Commit | Line | Data |
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5bd4f169 | 1 | /* PowerPC64-specific support for 64-bit ELF. |
b2a8e766 AM |
2 | Copyright 1999, 2000, 2001, 2002, 2003, 2004 |
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., | |
22 | 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ | |
5bd4f169 | 23 | |
4ce794b7 AM |
24 | /* The 64-bit PowerPC ELF ABI may be found at |
25 | http://www.linuxbase.org/spec/ELF/ppc64/PPC-elf64abi.txt, and | |
26 | http://www.linuxbase.org/spec/ELF/ppc64/spec/book1.html */ | |
5bd4f169 AM |
27 | |
28 | #include "bfd.h" | |
29 | #include "sysdep.h" | |
30 | #include "bfdlink.h" | |
31 | #include "libbfd.h" | |
32 | #include "elf-bfd.h" | |
04c9666a | 33 | #include "elf/ppc64.h" |
5d1634d7 | 34 | #include "elf64-ppc.h" |
5bd4f169 | 35 | |
805fc799 | 36 | static bfd_reloc_status_type ppc64_elf_ha_reloc |
4ce794b7 | 37 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
2441e016 AM |
38 | static bfd_reloc_status_type ppc64_elf_branch_reloc |
39 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); | |
805fc799 | 40 | static bfd_reloc_status_type ppc64_elf_brtaken_reloc |
4ce794b7 | 41 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
805fc799 | 42 | static bfd_reloc_status_type ppc64_elf_sectoff_reloc |
4ce794b7 | 43 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
805fc799 | 44 | static bfd_reloc_status_type ppc64_elf_sectoff_ha_reloc |
4ce794b7 | 45 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
805fc799 | 46 | static bfd_reloc_status_type ppc64_elf_toc_reloc |
4ce794b7 | 47 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
805fc799 | 48 | static bfd_reloc_status_type ppc64_elf_toc_ha_reloc |
4ce794b7 | 49 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
805fc799 | 50 | static bfd_reloc_status_type ppc64_elf_toc64_reloc |
4ce794b7 | 51 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
805fc799 | 52 | static bfd_reloc_status_type ppc64_elf_unhandled_reloc |
4ce794b7 | 53 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
2441e016 AM |
54 | static bfd_vma opd_entry_value |
55 | (asection *, bfd_vma, asection **, bfd_vma *); | |
5bd4f169 | 56 | |
ad8e1ba5 AM |
57 | #define TARGET_LITTLE_SYM bfd_elf64_powerpcle_vec |
58 | #define TARGET_LITTLE_NAME "elf64-powerpcle" | |
59 | #define TARGET_BIG_SYM bfd_elf64_powerpc_vec | |
60 | #define TARGET_BIG_NAME "elf64-powerpc" | |
61 | #define ELF_ARCH bfd_arch_powerpc | |
62 | #define ELF_MACHINE_CODE EM_PPC64 | |
63 | #define ELF_MAXPAGESIZE 0x10000 | |
64 | #define elf_info_to_howto ppc64_elf_info_to_howto | |
65 | ||
66 | #define elf_backend_want_got_sym 0 | |
67 | #define elf_backend_want_plt_sym 0 | |
68 | #define elf_backend_plt_alignment 3 | |
69 | #define elf_backend_plt_not_loaded 1 | |
70 | #define elf_backend_got_symbol_offset 0 | |
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 AM |
92 | #define elf_backend_check_relocs ppc64_elf_check_relocs |
93 | #define elf_backend_gc_mark_hook ppc64_elf_gc_mark_hook | |
94 | #define elf_backend_gc_sweep_hook ppc64_elf_gc_sweep_hook | |
95 | #define elf_backend_adjust_dynamic_symbol ppc64_elf_adjust_dynamic_symbol | |
96 | #define elf_backend_hide_symbol ppc64_elf_hide_symbol | |
97 | #define elf_backend_always_size_sections ppc64_elf_func_desc_adjust | |
98 | #define elf_backend_size_dynamic_sections ppc64_elf_size_dynamic_sections | |
99 | #define elf_backend_relocate_section ppc64_elf_relocate_section | |
100 | #define elf_backend_finish_dynamic_symbol ppc64_elf_finish_dynamic_symbol | |
101 | #define elf_backend_reloc_type_class ppc64_elf_reloc_type_class | |
102 | #define elf_backend_finish_dynamic_sections ppc64_elf_finish_dynamic_sections | |
754021d0 | 103 | #define elf_backend_link_output_symbol_hook ppc64_elf_output_symbol_hook |
2f89ff8d | 104 | #define elf_backend_special_sections ppc64_elf_special_sections |
ad8e1ba5 | 105 | |
5bd4f169 AM |
106 | /* The name of the dynamic interpreter. This is put in the .interp |
107 | section. */ | |
108 | #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1" | |
109 | ||
110 | /* The size in bytes of an entry in the procedure linkage table. */ | |
111 | #define PLT_ENTRY_SIZE 24 | |
112 | ||
113 | /* The initial size of the plt reserved for the dynamic linker. */ | |
5d1634d7 | 114 | #define PLT_INITIAL_ENTRY_SIZE PLT_ENTRY_SIZE |
5bd4f169 AM |
115 | |
116 | /* TOC base pointers offset from start of TOC. */ | |
411e1bfb AM |
117 | #define TOC_BASE_OFF 0x8000 |
118 | ||
119 | /* Offset of tp and dtp pointers from start of TLS block. */ | |
120 | #define TP_OFFSET 0x7000 | |
121 | #define DTP_OFFSET 0x8000 | |
5bd4f169 | 122 | |
ad8e1ba5 AM |
123 | /* .plt call stub instructions. The normal stub is like this, but |
124 | sometimes the .plt entry crosses a 64k boundary and we need to | |
125 | insert an addis to adjust r12. */ | |
126 | #define PLT_CALL_STUB_SIZE (7*4) | |
5d1634d7 AM |
127 | #define ADDIS_R12_R2 0x3d820000 /* addis %r12,%r2,xxx@ha */ |
128 | #define STD_R2_40R1 0xf8410028 /* std %r2,40(%r1) */ | |
129 | #define LD_R11_0R12 0xe96c0000 /* ld %r11,xxx+0@l(%r12) */ | |
130 | #define LD_R2_0R12 0xe84c0000 /* ld %r2,xxx+8@l(%r12) */ | |
131 | #define MTCTR_R11 0x7d6903a6 /* mtctr %r11 */ | |
132 | /* ld %r11,xxx+16@l(%r12) */ | |
133 | #define BCTR 0x4e800420 /* bctr */ | |
134 | ||
5d1634d7 | 135 | |
ad8e1ba5 AM |
136 | #define ADDIS_R2_R2 0x3c420000 /* addis %r2,%r2,off@ha */ |
137 | #define ADDI_R2_R2 0x38420000 /* addi %r2,%r2,off@l */ | |
138 | ||
139 | #define LD_R2_40R1 0xe8410028 /* ld %r2,40(%r1) */ | |
140 | ||
141 | /* glink call stub instructions. We enter with the index in R0, and the | |
142 | address of glink entry in CTR. From that, we can calculate PLT0. */ | |
143 | #define GLINK_CALL_STUB_SIZE (16*4) | |
144 | #define MFCTR_R12 0x7d8902a6 /* mfctr %r12 */ | |
145 | #define SLDI_R11_R0_3 0x780b1f24 /* sldi %r11,%r0,3 */ | |
146 | #define ADDIC_R2_R0_32K 0x34408000 /* addic. %r2,%r0,-32768 */ | |
147 | #define SUB_R12_R12_R11 0x7d8b6050 /* sub %r12,%r12,%r11 */ | |
148 | #define SRADI_R2_R2_63 0x7c42fe76 /* sradi %r2,%r2,63 */ | |
149 | #define SLDI_R11_R0_2 0x780b1764 /* sldi %r11,%r0,2 */ | |
150 | #define AND_R2_R2_R11 0x7c425838 /* and %r2,%r2,%r11 */ | |
151 | /* sub %r12,%r12,%r11 */ | |
152 | #define ADD_R12_R12_R2 0x7d8c1214 /* add %r12,%r12,%r2 */ | |
153 | #define ADDIS_R12_R12 0x3d8c0000 /* addis %r12,%r12,xxx@ha */ | |
154 | /* ld %r11,xxx@l(%r12) */ | |
155 | #define ADDI_R12_R12 0x398c0000 /* addi %r12,%r12,xxx@l */ | |
156 | /* ld %r2,8(%r12) */ | |
157 | /* mtctr %r11 */ | |
158 | /* ld %r11,16(%r12) */ | |
159 | /* bctr */ | |
5d1634d7 AM |
160 | |
161 | /* Pad with this. */ | |
162 | #define NOP 0x60000000 | |
163 | ||
721956f4 AM |
164 | /* Some other nops. */ |
165 | #define CROR_151515 0x4def7b82 | |
166 | #define CROR_313131 0x4ffffb82 | |
167 | ||
cedb70c5 | 168 | /* .glink entries for the first 32k functions are two instructions. */ |
5d1634d7 AM |
169 | #define LI_R0_0 0x38000000 /* li %r0,0 */ |
170 | #define B_DOT 0x48000000 /* b . */ | |
171 | ||
172 | /* After that, we need two instructions to load the index, followed by | |
173 | a branch. */ | |
174 | #define LIS_R0_0 0x3c000000 /* lis %r0,0 */ | |
10ed1bba | 175 | #define ORI_R0_R0_0 0x60000000 /* ori %r0,%r0,0 */ |
41bd81ab | 176 | |
deb0e272 AM |
177 | /* Instructions used by the save and restore reg functions. */ |
178 | #define STD_R0_0R1 0xf8010000 /* std %r0,0(%r1) */ | |
179 | #define STD_R0_0R12 0xf80c0000 /* std %r0,0(%r12) */ | |
180 | #define LD_R0_0R1 0xe8010000 /* ld %r0,0(%r1) */ | |
181 | #define LD_R0_0R12 0xe80c0000 /* ld %r0,0(%r12) */ | |
82bd7b59 AM |
182 | #define STFD_FR0_0R1 0xd8010000 /* stfd %fr0,0(%r1) */ |
183 | #define LFD_FR0_0R1 0xc8010000 /* lfd %fr0,0(%r1) */ | |
deb0e272 AM |
184 | #define LI_R12_0 0x39800000 /* li %r12,0 */ |
185 | #define STVX_VR0_R12_R0 0x7c0c01ce /* stvx %v0,%r12,%r0 */ | |
186 | #define LVX_VR0_R12_R0 0x7c0c00ce /* lvx %v0,%r12,%r0 */ | |
187 | #define MTLR_R0 0x7c0803a6 /* mtlr %r0 */ | |
82bd7b59 AM |
188 | #define BLR 0x4e800020 /* blr */ |
189 | ||
41bd81ab AM |
190 | /* Since .opd is an array of descriptors and each entry will end up |
191 | with identical R_PPC64_RELATIVE relocs, there is really no need to | |
192 | propagate .opd relocs; The dynamic linker should be taught to | |
1e2f5b6e | 193 | relocate .opd without reloc entries. */ |
41bd81ab AM |
194 | #ifndef NO_OPD_RELOCS |
195 | #define NO_OPD_RELOCS 0 | |
196 | #endif | |
5bd4f169 | 197 | \f |
f5e87a1d | 198 | #define ONES(n) (((bfd_vma) 1 << ((n) - 1) << 1) - 1) |
b34976b6 | 199 | |
5bd4f169 | 200 | /* Relocation HOWTO's. */ |
04c9666a | 201 | static reloc_howto_type *ppc64_elf_howto_table[(int) R_PPC64_max]; |
5bd4f169 AM |
202 | |
203 | static reloc_howto_type ppc64_elf_howto_raw[] = { | |
204 | /* This reloc does nothing. */ | |
205 | HOWTO (R_PPC64_NONE, /* type */ | |
206 | 0, /* rightshift */ | |
411e1bfb AM |
207 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
208 | 32, /* bitsize */ | |
b34976b6 | 209 | FALSE, /* pc_relative */ |
5bd4f169 | 210 | 0, /* bitpos */ |
f5e87a1d | 211 | complain_overflow_dont, /* complain_on_overflow */ |
5bd4f169 AM |
212 | bfd_elf_generic_reloc, /* special_function */ |
213 | "R_PPC64_NONE", /* name */ | |
b34976b6 | 214 | FALSE, /* partial_inplace */ |
d006db6c | 215 | 0, /* src_mask */ |
5bd4f169 | 216 | 0, /* dst_mask */ |
b34976b6 | 217 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
218 | |
219 | /* A standard 32 bit relocation. */ | |
220 | HOWTO (R_PPC64_ADDR32, /* type */ | |
221 | 0, /* rightshift */ | |
222 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
223 | 32, /* bitsize */ | |
b34976b6 | 224 | FALSE, /* pc_relative */ |
5bd4f169 AM |
225 | 0, /* bitpos */ |
226 | complain_overflow_bitfield, /* complain_on_overflow */ | |
227 | bfd_elf_generic_reloc, /* special_function */ | |
228 | "R_PPC64_ADDR32", /* name */ | |
b34976b6 | 229 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
230 | 0, /* src_mask */ |
231 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 232 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
233 | |
234 | /* An absolute 26 bit branch; the lower two bits must be zero. | |
235 | FIXME: we don't check that, we just clear them. */ | |
236 | HOWTO (R_PPC64_ADDR24, /* type */ | |
237 | 0, /* rightshift */ | |
238 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
239 | 26, /* bitsize */ | |
b34976b6 | 240 | FALSE, /* pc_relative */ |
5bd4f169 AM |
241 | 0, /* bitpos */ |
242 | complain_overflow_bitfield, /* complain_on_overflow */ | |
243 | bfd_elf_generic_reloc, /* special_function */ | |
244 | "R_PPC64_ADDR24", /* name */ | |
b34976b6 | 245 | FALSE, /* partial_inplace */ |
d006db6c | 246 | 0, /* src_mask */ |
f5e87a1d | 247 | 0x03fffffc, /* dst_mask */ |
b34976b6 | 248 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
249 | |
250 | /* A standard 16 bit relocation. */ | |
251 | HOWTO (R_PPC64_ADDR16, /* type */ | |
252 | 0, /* rightshift */ | |
253 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
254 | 16, /* bitsize */ | |
b34976b6 | 255 | FALSE, /* pc_relative */ |
5bd4f169 AM |
256 | 0, /* bitpos */ |
257 | complain_overflow_bitfield, /* complain_on_overflow */ | |
258 | bfd_elf_generic_reloc, /* special_function */ | |
259 | "R_PPC64_ADDR16", /* name */ | |
b34976b6 | 260 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
261 | 0, /* src_mask */ |
262 | 0xffff, /* dst_mask */ | |
b34976b6 | 263 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
264 | |
265 | /* A 16 bit relocation without overflow. */ | |
266 | HOWTO (R_PPC64_ADDR16_LO, /* type */ | |
267 | 0, /* rightshift */ | |
268 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
269 | 16, /* bitsize */ | |
b34976b6 | 270 | FALSE, /* pc_relative */ |
5bd4f169 AM |
271 | 0, /* bitpos */ |
272 | complain_overflow_dont,/* complain_on_overflow */ | |
273 | bfd_elf_generic_reloc, /* special_function */ | |
274 | "R_PPC64_ADDR16_LO", /* name */ | |
b34976b6 | 275 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
276 | 0, /* src_mask */ |
277 | 0xffff, /* dst_mask */ | |
b34976b6 | 278 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
279 | |
280 | /* Bits 16-31 of an address. */ | |
281 | HOWTO (R_PPC64_ADDR16_HI, /* type */ | |
282 | 16, /* rightshift */ | |
283 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
284 | 16, /* bitsize */ | |
b34976b6 | 285 | FALSE, /* pc_relative */ |
5bd4f169 AM |
286 | 0, /* bitpos */ |
287 | complain_overflow_dont, /* complain_on_overflow */ | |
288 | bfd_elf_generic_reloc, /* special_function */ | |
289 | "R_PPC64_ADDR16_HI", /* name */ | |
b34976b6 | 290 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
291 | 0, /* src_mask */ |
292 | 0xffff, /* dst_mask */ | |
b34976b6 | 293 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
294 | |
295 | /* Bits 16-31 of an address, plus 1 if the contents of the low 16 | |
296 | bits, treated as a signed number, is negative. */ | |
297 | HOWTO (R_PPC64_ADDR16_HA, /* type */ | |
298 | 16, /* rightshift */ | |
299 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
300 | 16, /* bitsize */ | |
b34976b6 | 301 | FALSE, /* pc_relative */ |
5bd4f169 AM |
302 | 0, /* bitpos */ |
303 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 304 | ppc64_elf_ha_reloc, /* special_function */ |
5bd4f169 | 305 | "R_PPC64_ADDR16_HA", /* name */ |
b34976b6 | 306 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
307 | 0, /* src_mask */ |
308 | 0xffff, /* dst_mask */ | |
b34976b6 | 309 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
310 | |
311 | /* An absolute 16 bit branch; the lower two bits must be zero. | |
312 | FIXME: we don't check that, we just clear them. */ | |
313 | HOWTO (R_PPC64_ADDR14, /* type */ | |
314 | 0, /* rightshift */ | |
315 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
316 | 16, /* bitsize */ | |
b34976b6 | 317 | FALSE, /* pc_relative */ |
5bd4f169 AM |
318 | 0, /* bitpos */ |
319 | complain_overflow_bitfield, /* complain_on_overflow */ | |
2441e016 | 320 | ppc64_elf_branch_reloc, /* special_function */ |
5bd4f169 | 321 | "R_PPC64_ADDR14", /* name */ |
b34976b6 | 322 | FALSE, /* partial_inplace */ |
d006db6c | 323 | 0, /* src_mask */ |
f5e87a1d | 324 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 325 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
326 | |
327 | /* An absolute 16 bit branch, for which bit 10 should be set to | |
328 | indicate that the branch is expected to be taken. The lower two | |
329 | bits must be zero. */ | |
330 | HOWTO (R_PPC64_ADDR14_BRTAKEN, /* type */ | |
331 | 0, /* rightshift */ | |
332 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
333 | 16, /* bitsize */ | |
b34976b6 | 334 | FALSE, /* pc_relative */ |
5bd4f169 AM |
335 | 0, /* bitpos */ |
336 | complain_overflow_bitfield, /* complain_on_overflow */ | |
805fc799 | 337 | ppc64_elf_brtaken_reloc, /* special_function */ |
5bd4f169 | 338 | "R_PPC64_ADDR14_BRTAKEN",/* name */ |
b34976b6 | 339 | FALSE, /* partial_inplace */ |
d006db6c | 340 | 0, /* src_mask */ |
f5e87a1d | 341 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 342 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
343 | |
344 | /* An absolute 16 bit branch, for which bit 10 should be set to | |
345 | indicate that the branch is not expected to be taken. The lower | |
346 | two bits must be zero. */ | |
347 | HOWTO (R_PPC64_ADDR14_BRNTAKEN, /* type */ | |
348 | 0, /* rightshift */ | |
349 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
350 | 16, /* bitsize */ | |
b34976b6 | 351 | FALSE, /* pc_relative */ |
5bd4f169 AM |
352 | 0, /* bitpos */ |
353 | complain_overflow_bitfield, /* complain_on_overflow */ | |
805fc799 | 354 | ppc64_elf_brtaken_reloc, /* special_function */ |
5bd4f169 | 355 | "R_PPC64_ADDR14_BRNTAKEN",/* name */ |
b34976b6 | 356 | FALSE, /* partial_inplace */ |
d006db6c | 357 | 0, /* src_mask */ |
f5e87a1d | 358 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 359 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
360 | |
361 | /* A relative 26 bit branch; the lower two bits must be zero. */ | |
362 | HOWTO (R_PPC64_REL24, /* type */ | |
363 | 0, /* rightshift */ | |
364 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
365 | 26, /* bitsize */ | |
b34976b6 | 366 | TRUE, /* pc_relative */ |
5bd4f169 AM |
367 | 0, /* bitpos */ |
368 | complain_overflow_signed, /* complain_on_overflow */ | |
2441e016 | 369 | ppc64_elf_branch_reloc, /* special_function */ |
5bd4f169 | 370 | "R_PPC64_REL24", /* name */ |
b34976b6 | 371 | FALSE, /* partial_inplace */ |
d006db6c | 372 | 0, /* src_mask */ |
f5e87a1d | 373 | 0x03fffffc, /* dst_mask */ |
b34976b6 | 374 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
375 | |
376 | /* A relative 16 bit branch; the lower two bits must be zero. */ | |
377 | HOWTO (R_PPC64_REL14, /* type */ | |
378 | 0, /* rightshift */ | |
379 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
380 | 16, /* bitsize */ | |
b34976b6 | 381 | TRUE, /* pc_relative */ |
5bd4f169 AM |
382 | 0, /* bitpos */ |
383 | complain_overflow_signed, /* complain_on_overflow */ | |
2441e016 | 384 | ppc64_elf_branch_reloc, /* special_function */ |
5bd4f169 | 385 | "R_PPC64_REL14", /* name */ |
b34976b6 | 386 | FALSE, /* partial_inplace */ |
d006db6c | 387 | 0, /* src_mask */ |
f5e87a1d | 388 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 389 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
390 | |
391 | /* A relative 16 bit branch. Bit 10 should be set to indicate that | |
392 | the branch is expected to be taken. The lower two bits must be | |
393 | zero. */ | |
394 | HOWTO (R_PPC64_REL14_BRTAKEN, /* type */ | |
395 | 0, /* rightshift */ | |
396 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
397 | 16, /* bitsize */ | |
b34976b6 | 398 | TRUE, /* pc_relative */ |
5bd4f169 AM |
399 | 0, /* bitpos */ |
400 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 401 | ppc64_elf_brtaken_reloc, /* special_function */ |
5bd4f169 | 402 | "R_PPC64_REL14_BRTAKEN", /* name */ |
b34976b6 | 403 | FALSE, /* partial_inplace */ |
d006db6c | 404 | 0, /* src_mask */ |
f5e87a1d | 405 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 406 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
407 | |
408 | /* A relative 16 bit branch. Bit 10 should be set to indicate that | |
409 | the branch is not expected to be taken. The lower two bits must | |
410 | be zero. */ | |
411 | HOWTO (R_PPC64_REL14_BRNTAKEN, /* type */ | |
412 | 0, /* rightshift */ | |
413 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
414 | 16, /* bitsize */ | |
b34976b6 | 415 | TRUE, /* pc_relative */ |
5bd4f169 AM |
416 | 0, /* bitpos */ |
417 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 418 | ppc64_elf_brtaken_reloc, /* special_function */ |
5bd4f169 | 419 | "R_PPC64_REL14_BRNTAKEN",/* name */ |
b34976b6 | 420 | FALSE, /* partial_inplace */ |
d006db6c | 421 | 0, /* src_mask */ |
f5e87a1d | 422 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 423 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
424 | |
425 | /* Like R_PPC64_ADDR16, but referring to the GOT table entry for the | |
426 | symbol. */ | |
427 | HOWTO (R_PPC64_GOT16, /* type */ | |
428 | 0, /* rightshift */ | |
429 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
430 | 16, /* bitsize */ | |
b34976b6 | 431 | FALSE, /* pc_relative */ |
5bd4f169 AM |
432 | 0, /* bitpos */ |
433 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 434 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 435 | "R_PPC64_GOT16", /* name */ |
b34976b6 | 436 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
437 | 0, /* src_mask */ |
438 | 0xffff, /* dst_mask */ | |
b34976b6 | 439 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
440 | |
441 | /* Like R_PPC64_ADDR16_LO, but referring to the GOT table entry for | |
442 | the symbol. */ | |
443 | HOWTO (R_PPC64_GOT16_LO, /* type */ | |
444 | 0, /* rightshift */ | |
445 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
446 | 16, /* bitsize */ | |
b34976b6 | 447 | FALSE, /* pc_relative */ |
5bd4f169 AM |
448 | 0, /* bitpos */ |
449 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 450 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 451 | "R_PPC64_GOT16_LO", /* name */ |
b34976b6 | 452 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
453 | 0, /* src_mask */ |
454 | 0xffff, /* dst_mask */ | |
b34976b6 | 455 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
456 | |
457 | /* Like R_PPC64_ADDR16_HI, but referring to the GOT table entry for | |
458 | the symbol. */ | |
459 | HOWTO (R_PPC64_GOT16_HI, /* type */ | |
460 | 16, /* rightshift */ | |
461 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
462 | 16, /* bitsize */ | |
b34976b6 | 463 | FALSE, /* pc_relative */ |
5bd4f169 AM |
464 | 0, /* bitpos */ |
465 | complain_overflow_dont,/* complain_on_overflow */ | |
805fc799 | 466 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 467 | "R_PPC64_GOT16_HI", /* name */ |
b34976b6 | 468 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
469 | 0, /* src_mask */ |
470 | 0xffff, /* dst_mask */ | |
b34976b6 | 471 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
472 | |
473 | /* Like R_PPC64_ADDR16_HA, but referring to the GOT table entry for | |
474 | the symbol. */ | |
475 | HOWTO (R_PPC64_GOT16_HA, /* type */ | |
476 | 16, /* rightshift */ | |
477 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
478 | 16, /* bitsize */ | |
b34976b6 | 479 | FALSE, /* pc_relative */ |
5bd4f169 AM |
480 | 0, /* bitpos */ |
481 | complain_overflow_dont,/* complain_on_overflow */ | |
805fc799 | 482 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 483 | "R_PPC64_GOT16_HA", /* name */ |
b34976b6 | 484 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
485 | 0, /* src_mask */ |
486 | 0xffff, /* dst_mask */ | |
b34976b6 | 487 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
488 | |
489 | /* This is used only by the dynamic linker. The symbol should exist | |
490 | both in the object being run and in some shared library. The | |
491 | dynamic linker copies the data addressed by the symbol from the | |
492 | shared library into the object, because the object being | |
493 | run has to have the data at some particular address. */ | |
494 | HOWTO (R_PPC64_COPY, /* type */ | |
495 | 0, /* rightshift */ | |
f5e87a1d AM |
496 | 0, /* this one is variable size */ |
497 | 0, /* bitsize */ | |
b34976b6 | 498 | FALSE, /* pc_relative */ |
5bd4f169 | 499 | 0, /* bitpos */ |
f5e87a1d AM |
500 | complain_overflow_dont, /* complain_on_overflow */ |
501 | ppc64_elf_unhandled_reloc, /* special_function */ | |
5bd4f169 | 502 | "R_PPC64_COPY", /* name */ |
b34976b6 | 503 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
504 | 0, /* src_mask */ |
505 | 0, /* dst_mask */ | |
b34976b6 | 506 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
507 | |
508 | /* Like R_PPC64_ADDR64, but used when setting global offset table | |
509 | entries. */ | |
510 | HOWTO (R_PPC64_GLOB_DAT, /* type */ | |
511 | 0, /* rightshift */ | |
512 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
513 | 64, /* bitsize */ | |
b34976b6 | 514 | FALSE, /* pc_relative */ |
5bd4f169 AM |
515 | 0, /* bitpos */ |
516 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 517 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 518 | "R_PPC64_GLOB_DAT", /* name */ |
b34976b6 | 519 | FALSE, /* partial_inplace */ |
5bd4f169 | 520 | 0, /* src_mask */ |
f5e87a1d | 521 | ONES (64), /* dst_mask */ |
b34976b6 | 522 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
523 | |
524 | /* Created by the link editor. Marks a procedure linkage table | |
525 | entry for a symbol. */ | |
526 | HOWTO (R_PPC64_JMP_SLOT, /* type */ | |
527 | 0, /* rightshift */ | |
528 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
529 | 0, /* bitsize */ | |
b34976b6 | 530 | FALSE, /* pc_relative */ |
5bd4f169 AM |
531 | 0, /* bitpos */ |
532 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 533 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 534 | "R_PPC64_JMP_SLOT", /* name */ |
b34976b6 | 535 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
536 | 0, /* src_mask */ |
537 | 0, /* dst_mask */ | |
b34976b6 | 538 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
539 | |
540 | /* Used only by the dynamic linker. When the object is run, this | |
541 | doubleword64 is set to the load address of the object, plus the | |
542 | addend. */ | |
543 | HOWTO (R_PPC64_RELATIVE, /* type */ | |
544 | 0, /* rightshift */ | |
545 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
546 | 64, /* bitsize */ | |
b34976b6 | 547 | FALSE, /* pc_relative */ |
5bd4f169 AM |
548 | 0, /* bitpos */ |
549 | complain_overflow_dont, /* complain_on_overflow */ | |
550 | bfd_elf_generic_reloc, /* special_function */ | |
551 | "R_PPC64_RELATIVE", /* name */ | |
b34976b6 | 552 | FALSE, /* partial_inplace */ |
5bd4f169 | 553 | 0, /* src_mask */ |
f5e87a1d | 554 | ONES (64), /* dst_mask */ |
b34976b6 | 555 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
556 | |
557 | /* Like R_PPC64_ADDR32, but may be unaligned. */ | |
558 | HOWTO (R_PPC64_UADDR32, /* type */ | |
559 | 0, /* rightshift */ | |
560 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
561 | 32, /* bitsize */ | |
b34976b6 | 562 | FALSE, /* pc_relative */ |
5bd4f169 AM |
563 | 0, /* bitpos */ |
564 | complain_overflow_bitfield, /* complain_on_overflow */ | |
565 | bfd_elf_generic_reloc, /* special_function */ | |
566 | "R_PPC64_UADDR32", /* name */ | |
b34976b6 | 567 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
568 | 0, /* src_mask */ |
569 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 570 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
571 | |
572 | /* Like R_PPC64_ADDR16, but may be unaligned. */ | |
573 | HOWTO (R_PPC64_UADDR16, /* type */ | |
574 | 0, /* rightshift */ | |
575 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
576 | 16, /* bitsize */ | |
b34976b6 | 577 | FALSE, /* pc_relative */ |
5bd4f169 AM |
578 | 0, /* bitpos */ |
579 | complain_overflow_bitfield, /* complain_on_overflow */ | |
580 | bfd_elf_generic_reloc, /* special_function */ | |
581 | "R_PPC64_UADDR16", /* name */ | |
b34976b6 | 582 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
583 | 0, /* src_mask */ |
584 | 0xffff, /* dst_mask */ | |
b34976b6 | 585 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
586 | |
587 | /* 32-bit PC relative. */ | |
588 | HOWTO (R_PPC64_REL32, /* type */ | |
589 | 0, /* rightshift */ | |
590 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
591 | 32, /* bitsize */ | |
b34976b6 | 592 | TRUE, /* pc_relative */ |
5bd4f169 | 593 | 0, /* bitpos */ |
cedb70c5 | 594 | /* FIXME: Verify. Was complain_overflow_bitfield. */ |
5bd4f169 AM |
595 | complain_overflow_signed, /* complain_on_overflow */ |
596 | bfd_elf_generic_reloc, /* special_function */ | |
597 | "R_PPC64_REL32", /* name */ | |
b34976b6 | 598 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
599 | 0, /* src_mask */ |
600 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 601 | TRUE), /* pcrel_offset */ |
5bd4f169 | 602 | |
10ed1bba | 603 | /* 32-bit relocation to the symbol's procedure linkage table. */ |
5bd4f169 AM |
604 | HOWTO (R_PPC64_PLT32, /* type */ |
605 | 0, /* rightshift */ | |
606 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
607 | 32, /* bitsize */ | |
b34976b6 | 608 | FALSE, /* pc_relative */ |
5bd4f169 AM |
609 | 0, /* bitpos */ |
610 | complain_overflow_bitfield, /* complain_on_overflow */ | |
805fc799 | 611 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 612 | "R_PPC64_PLT32", /* name */ |
b34976b6 | 613 | FALSE, /* partial_inplace */ |
5bd4f169 | 614 | 0, /* src_mask */ |
f5e87a1d | 615 | 0xffffffff, /* dst_mask */ |
b34976b6 | 616 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
617 | |
618 | /* 32-bit PC relative relocation to the symbol's procedure linkage table. | |
619 | FIXME: R_PPC64_PLTREL32 not supported. */ | |
620 | HOWTO (R_PPC64_PLTREL32, /* type */ | |
621 | 0, /* rightshift */ | |
622 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
623 | 32, /* bitsize */ | |
b34976b6 | 624 | TRUE, /* pc_relative */ |
5bd4f169 AM |
625 | 0, /* bitpos */ |
626 | complain_overflow_signed, /* complain_on_overflow */ | |
627 | bfd_elf_generic_reloc, /* special_function */ | |
628 | "R_PPC64_PLTREL32", /* name */ | |
b34976b6 | 629 | FALSE, /* partial_inplace */ |
5bd4f169 | 630 | 0, /* src_mask */ |
f5e87a1d | 631 | 0xffffffff, /* dst_mask */ |
b34976b6 | 632 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
633 | |
634 | /* Like R_PPC64_ADDR16_LO, but referring to the PLT table entry for | |
635 | the symbol. */ | |
636 | HOWTO (R_PPC64_PLT16_LO, /* type */ | |
637 | 0, /* rightshift */ | |
638 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
639 | 16, /* bitsize */ | |
b34976b6 | 640 | FALSE, /* pc_relative */ |
5bd4f169 AM |
641 | 0, /* bitpos */ |
642 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 643 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 644 | "R_PPC64_PLT16_LO", /* name */ |
b34976b6 | 645 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
646 | 0, /* src_mask */ |
647 | 0xffff, /* dst_mask */ | |
b34976b6 | 648 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
649 | |
650 | /* Like R_PPC64_ADDR16_HI, but referring to the PLT table entry for | |
651 | the symbol. */ | |
652 | HOWTO (R_PPC64_PLT16_HI, /* type */ | |
653 | 16, /* rightshift */ | |
654 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
655 | 16, /* bitsize */ | |
b34976b6 | 656 | FALSE, /* pc_relative */ |
5bd4f169 AM |
657 | 0, /* bitpos */ |
658 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 659 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 660 | "R_PPC64_PLT16_HI", /* name */ |
b34976b6 | 661 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
662 | 0, /* src_mask */ |
663 | 0xffff, /* dst_mask */ | |
b34976b6 | 664 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
665 | |
666 | /* Like R_PPC64_ADDR16_HA, but referring to the PLT table entry for | |
667 | the symbol. */ | |
668 | HOWTO (R_PPC64_PLT16_HA, /* type */ | |
669 | 16, /* rightshift */ | |
670 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
671 | 16, /* bitsize */ | |
b34976b6 | 672 | FALSE, /* pc_relative */ |
5bd4f169 AM |
673 | 0, /* bitpos */ |
674 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 675 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 676 | "R_PPC64_PLT16_HA", /* name */ |
b34976b6 | 677 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
678 | 0, /* src_mask */ |
679 | 0xffff, /* dst_mask */ | |
b34976b6 | 680 | FALSE), /* pcrel_offset */ |
5bd4f169 | 681 | |
c061c2d8 | 682 | /* 16-bit section relative relocation. */ |
5bd4f169 AM |
683 | HOWTO (R_PPC64_SECTOFF, /* type */ |
684 | 0, /* rightshift */ | |
c061c2d8 AM |
685 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
686 | 16, /* bitsize */ | |
b34976b6 | 687 | FALSE, /* pc_relative */ |
5bd4f169 AM |
688 | 0, /* bitpos */ |
689 | complain_overflow_bitfield, /* complain_on_overflow */ | |
805fc799 | 690 | ppc64_elf_sectoff_reloc, /* special_function */ |
5bd4f169 | 691 | "R_PPC64_SECTOFF", /* name */ |
b34976b6 | 692 | FALSE, /* partial_inplace */ |
5bd4f169 | 693 | 0, /* src_mask */ |
c061c2d8 | 694 | 0xffff, /* dst_mask */ |
b34976b6 | 695 | FALSE), /* pcrel_offset */ |
5bd4f169 | 696 | |
c061c2d8 | 697 | /* Like R_PPC64_SECTOFF, but no overflow warning. */ |
5bd4f169 AM |
698 | HOWTO (R_PPC64_SECTOFF_LO, /* type */ |
699 | 0, /* rightshift */ | |
700 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
701 | 16, /* bitsize */ | |
b34976b6 | 702 | FALSE, /* pc_relative */ |
5bd4f169 AM |
703 | 0, /* bitpos */ |
704 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 705 | ppc64_elf_sectoff_reloc, /* special_function */ |
5bd4f169 | 706 | "R_PPC64_SECTOFF_LO", /* name */ |
b34976b6 | 707 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
708 | 0, /* src_mask */ |
709 | 0xffff, /* dst_mask */ | |
b34976b6 | 710 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
711 | |
712 | /* 16-bit upper half section relative relocation. */ | |
713 | HOWTO (R_PPC64_SECTOFF_HI, /* type */ | |
714 | 16, /* rightshift */ | |
715 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
716 | 16, /* bitsize */ | |
b34976b6 | 717 | FALSE, /* pc_relative */ |
5bd4f169 AM |
718 | 0, /* bitpos */ |
719 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 720 | ppc64_elf_sectoff_reloc, /* special_function */ |
5bd4f169 | 721 | "R_PPC64_SECTOFF_HI", /* name */ |
b34976b6 | 722 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
723 | 0, /* src_mask */ |
724 | 0xffff, /* dst_mask */ | |
b34976b6 | 725 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
726 | |
727 | /* 16-bit upper half adjusted section relative relocation. */ | |
728 | HOWTO (R_PPC64_SECTOFF_HA, /* type */ | |
729 | 16, /* rightshift */ | |
730 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
731 | 16, /* bitsize */ | |
b34976b6 | 732 | FALSE, /* pc_relative */ |
5bd4f169 AM |
733 | 0, /* bitpos */ |
734 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 735 | ppc64_elf_sectoff_ha_reloc, /* special_function */ |
5bd4f169 | 736 | "R_PPC64_SECTOFF_HA", /* name */ |
b34976b6 | 737 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
738 | 0, /* src_mask */ |
739 | 0xffff, /* dst_mask */ | |
b34976b6 | 740 | FALSE), /* pcrel_offset */ |
5bd4f169 | 741 | |
04c9666a AM |
742 | /* Like R_PPC64_REL24 without touching the two least significant bits. */ |
743 | HOWTO (R_PPC64_REL30, /* type */ | |
5bd4f169 AM |
744 | 2, /* rightshift */ |
745 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
746 | 30, /* bitsize */ | |
b34976b6 | 747 | TRUE, /* pc_relative */ |
5bd4f169 AM |
748 | 0, /* bitpos */ |
749 | complain_overflow_dont, /* complain_on_overflow */ | |
750 | bfd_elf_generic_reloc, /* special_function */ | |
04c9666a | 751 | "R_PPC64_REL30", /* name */ |
b34976b6 | 752 | FALSE, /* partial_inplace */ |
d006db6c | 753 | 0, /* src_mask */ |
5bd4f169 | 754 | 0xfffffffc, /* dst_mask */ |
b34976b6 | 755 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
756 | |
757 | /* Relocs in the 64-bit PowerPC ELF ABI, not in the 32-bit ABI. */ | |
758 | ||
759 | /* A standard 64-bit relocation. */ | |
760 | HOWTO (R_PPC64_ADDR64, /* type */ | |
761 | 0, /* rightshift */ | |
762 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
763 | 64, /* bitsize */ | |
b34976b6 | 764 | FALSE, /* pc_relative */ |
5bd4f169 AM |
765 | 0, /* bitpos */ |
766 | complain_overflow_dont, /* complain_on_overflow */ | |
767 | bfd_elf_generic_reloc, /* special_function */ | |
768 | "R_PPC64_ADDR64", /* name */ | |
b34976b6 | 769 | FALSE, /* partial_inplace */ |
5bd4f169 | 770 | 0, /* src_mask */ |
f5e87a1d | 771 | ONES (64), /* dst_mask */ |
b34976b6 | 772 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
773 | |
774 | /* The bits 32-47 of an address. */ | |
775 | HOWTO (R_PPC64_ADDR16_HIGHER, /* type */ | |
776 | 32, /* rightshift */ | |
777 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
778 | 16, /* bitsize */ | |
b34976b6 | 779 | FALSE, /* pc_relative */ |
5bd4f169 AM |
780 | 0, /* bitpos */ |
781 | complain_overflow_dont, /* complain_on_overflow */ | |
782 | bfd_elf_generic_reloc, /* special_function */ | |
783 | "R_PPC64_ADDR16_HIGHER", /* name */ | |
b34976b6 | 784 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
785 | 0, /* src_mask */ |
786 | 0xffff, /* dst_mask */ | |
b34976b6 | 787 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
788 | |
789 | /* The bits 32-47 of an address, plus 1 if the contents of the low | |
790 | 16 bits, treated as a signed number, is negative. */ | |
791 | HOWTO (R_PPC64_ADDR16_HIGHERA, /* type */ | |
792 | 32, /* rightshift */ | |
793 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
794 | 16, /* bitsize */ | |
b34976b6 | 795 | FALSE, /* pc_relative */ |
5bd4f169 AM |
796 | 0, /* bitpos */ |
797 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 798 | ppc64_elf_ha_reloc, /* special_function */ |
5bd4f169 | 799 | "R_PPC64_ADDR16_HIGHERA", /* name */ |
b34976b6 | 800 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
801 | 0, /* src_mask */ |
802 | 0xffff, /* dst_mask */ | |
b34976b6 | 803 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
804 | |
805 | /* The bits 48-63 of an address. */ | |
806 | HOWTO (R_PPC64_ADDR16_HIGHEST,/* type */ | |
807 | 48, /* rightshift */ | |
808 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
809 | 16, /* bitsize */ | |
b34976b6 | 810 | FALSE, /* pc_relative */ |
5bd4f169 AM |
811 | 0, /* bitpos */ |
812 | complain_overflow_dont, /* complain_on_overflow */ | |
813 | bfd_elf_generic_reloc, /* special_function */ | |
814 | "R_PPC64_ADDR16_HIGHEST", /* name */ | |
b34976b6 | 815 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
816 | 0, /* src_mask */ |
817 | 0xffff, /* dst_mask */ | |
b34976b6 | 818 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
819 | |
820 | /* The bits 48-63 of an address, plus 1 if the contents of the low | |
821 | 16 bits, treated as a signed number, is negative. */ | |
822 | HOWTO (R_PPC64_ADDR16_HIGHESTA,/* type */ | |
823 | 48, /* rightshift */ | |
824 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
825 | 16, /* bitsize */ | |
b34976b6 | 826 | FALSE, /* pc_relative */ |
5bd4f169 AM |
827 | 0, /* bitpos */ |
828 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 829 | ppc64_elf_ha_reloc, /* special_function */ |
5bd4f169 | 830 | "R_PPC64_ADDR16_HIGHESTA", /* name */ |
b34976b6 | 831 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
832 | 0, /* src_mask */ |
833 | 0xffff, /* dst_mask */ | |
b34976b6 | 834 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
835 | |
836 | /* Like ADDR64, but may be unaligned. */ | |
837 | HOWTO (R_PPC64_UADDR64, /* type */ | |
838 | 0, /* rightshift */ | |
839 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
840 | 64, /* bitsize */ | |
b34976b6 | 841 | FALSE, /* pc_relative */ |
5bd4f169 AM |
842 | 0, /* bitpos */ |
843 | complain_overflow_dont, /* complain_on_overflow */ | |
844 | bfd_elf_generic_reloc, /* special_function */ | |
845 | "R_PPC64_UADDR64", /* name */ | |
b34976b6 | 846 | FALSE, /* partial_inplace */ |
5bd4f169 | 847 | 0, /* src_mask */ |
f5e87a1d | 848 | ONES (64), /* dst_mask */ |
b34976b6 | 849 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
850 | |
851 | /* 64-bit relative relocation. */ | |
852 | HOWTO (R_PPC64_REL64, /* type */ | |
853 | 0, /* rightshift */ | |
854 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
855 | 64, /* bitsize */ | |
b34976b6 | 856 | TRUE, /* pc_relative */ |
5bd4f169 AM |
857 | 0, /* bitpos */ |
858 | complain_overflow_dont, /* complain_on_overflow */ | |
859 | bfd_elf_generic_reloc, /* special_function */ | |
860 | "R_PPC64_REL64", /* name */ | |
b34976b6 | 861 | FALSE, /* partial_inplace */ |
5bd4f169 | 862 | 0, /* src_mask */ |
f5e87a1d | 863 | ONES (64), /* dst_mask */ |
b34976b6 | 864 | TRUE), /* pcrel_offset */ |
5bd4f169 | 865 | |
cedb70c5 | 866 | /* 64-bit relocation to the symbol's procedure linkage table. */ |
5bd4f169 AM |
867 | HOWTO (R_PPC64_PLT64, /* type */ |
868 | 0, /* rightshift */ | |
869 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
870 | 64, /* bitsize */ | |
b34976b6 | 871 | FALSE, /* pc_relative */ |
5bd4f169 AM |
872 | 0, /* bitpos */ |
873 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 874 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 875 | "R_PPC64_PLT64", /* name */ |
b34976b6 | 876 | FALSE, /* partial_inplace */ |
5bd4f169 | 877 | 0, /* src_mask */ |
f5e87a1d | 878 | ONES (64), /* dst_mask */ |
b34976b6 | 879 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
880 | |
881 | /* 64-bit PC relative relocation to the symbol's procedure linkage | |
882 | table. */ | |
883 | /* FIXME: R_PPC64_PLTREL64 not supported. */ | |
884 | HOWTO (R_PPC64_PLTREL64, /* type */ | |
885 | 0, /* rightshift */ | |
886 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
887 | 64, /* bitsize */ | |
b34976b6 | 888 | TRUE, /* pc_relative */ |
5bd4f169 AM |
889 | 0, /* bitpos */ |
890 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 891 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 892 | "R_PPC64_PLTREL64", /* name */ |
b34976b6 | 893 | FALSE, /* partial_inplace */ |
5bd4f169 | 894 | 0, /* src_mask */ |
f5e87a1d | 895 | ONES (64), /* dst_mask */ |
b34976b6 | 896 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
897 | |
898 | /* 16 bit TOC-relative relocation. */ | |
899 | ||
900 | /* R_PPC64_TOC16 47 half16* S + A - .TOC. */ | |
901 | HOWTO (R_PPC64_TOC16, /* type */ | |
902 | 0, /* rightshift */ | |
903 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
904 | 16, /* bitsize */ | |
b34976b6 | 905 | FALSE, /* pc_relative */ |
5bd4f169 AM |
906 | 0, /* bitpos */ |
907 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 908 | ppc64_elf_toc_reloc, /* special_function */ |
5bd4f169 | 909 | "R_PPC64_TOC16", /* name */ |
b34976b6 | 910 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
911 | 0, /* src_mask */ |
912 | 0xffff, /* dst_mask */ | |
b34976b6 | 913 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
914 | |
915 | /* 16 bit TOC-relative relocation without overflow. */ | |
916 | ||
917 | /* R_PPC64_TOC16_LO 48 half16 #lo (S + A - .TOC.) */ | |
918 | HOWTO (R_PPC64_TOC16_LO, /* type */ | |
919 | 0, /* rightshift */ | |
920 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
921 | 16, /* bitsize */ | |
b34976b6 | 922 | FALSE, /* pc_relative */ |
5bd4f169 AM |
923 | 0, /* bitpos */ |
924 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 925 | ppc64_elf_toc_reloc, /* special_function */ |
5bd4f169 | 926 | "R_PPC64_TOC16_LO", /* name */ |
b34976b6 | 927 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
928 | 0, /* src_mask */ |
929 | 0xffff, /* dst_mask */ | |
b34976b6 | 930 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
931 | |
932 | /* 16 bit TOC-relative relocation, high 16 bits. */ | |
933 | ||
934 | /* R_PPC64_TOC16_HI 49 half16 #hi (S + A - .TOC.) */ | |
935 | HOWTO (R_PPC64_TOC16_HI, /* type */ | |
936 | 16, /* rightshift */ | |
937 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
938 | 16, /* bitsize */ | |
b34976b6 | 939 | FALSE, /* pc_relative */ |
5bd4f169 AM |
940 | 0, /* bitpos */ |
941 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 942 | ppc64_elf_toc_reloc, /* special_function */ |
5bd4f169 | 943 | "R_PPC64_TOC16_HI", /* name */ |
b34976b6 | 944 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
945 | 0, /* src_mask */ |
946 | 0xffff, /* dst_mask */ | |
b34976b6 | 947 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
948 | |
949 | /* 16 bit TOC-relative relocation, high 16 bits, plus 1 if the | |
950 | contents of the low 16 bits, treated as a signed number, is | |
951 | negative. */ | |
952 | ||
953 | /* R_PPC64_TOC16_HA 50 half16 #ha (S + A - .TOC.) */ | |
954 | HOWTO (R_PPC64_TOC16_HA, /* type */ | |
955 | 16, /* rightshift */ | |
956 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
957 | 16, /* bitsize */ | |
b34976b6 | 958 | FALSE, /* pc_relative */ |
5bd4f169 AM |
959 | 0, /* bitpos */ |
960 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 961 | ppc64_elf_toc_ha_reloc, /* special_function */ |
5bd4f169 | 962 | "R_PPC64_TOC16_HA", /* name */ |
b34976b6 | 963 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
964 | 0, /* src_mask */ |
965 | 0xffff, /* dst_mask */ | |
b34976b6 | 966 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
967 | |
968 | /* 64-bit relocation; insert value of TOC base (.TOC.). */ | |
969 | ||
970 | /* R_PPC64_TOC 51 doubleword64 .TOC. */ | |
971 | HOWTO (R_PPC64_TOC, /* type */ | |
972 | 0, /* rightshift */ | |
973 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
974 | 64, /* bitsize */ | |
b34976b6 | 975 | FALSE, /* pc_relative */ |
5bd4f169 AM |
976 | 0, /* bitpos */ |
977 | complain_overflow_bitfield, /* complain_on_overflow */ | |
805fc799 | 978 | ppc64_elf_toc64_reloc, /* special_function */ |
5bd4f169 | 979 | "R_PPC64_TOC", /* name */ |
b34976b6 | 980 | FALSE, /* partial_inplace */ |
5bd4f169 | 981 | 0, /* src_mask */ |
f5e87a1d | 982 | ONES (64), /* dst_mask */ |
b34976b6 | 983 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
984 | |
985 | /* Like R_PPC64_GOT16, but also informs the link editor that the | |
986 | value to relocate may (!) refer to a PLT entry which the link | |
987 | editor (a) may replace with the symbol value. If the link editor | |
988 | is unable to fully resolve the symbol, it may (b) create a PLT | |
989 | entry and store the address to the new PLT entry in the GOT. | |
990 | This permits lazy resolution of function symbols at run time. | |
991 | The link editor may also skip all of this and just (c) emit a | |
992 | R_PPC64_GLOB_DAT to tie the symbol to the GOT entry. */ | |
993 | /* FIXME: R_PPC64_PLTGOT16 not implemented. */ | |
994 | HOWTO (R_PPC64_PLTGOT16, /* type */ | |
995 | 0, /* rightshift */ | |
996 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
997 | 16, /* bitsize */ | |
b34976b6 | 998 | FALSE, /* pc_relative */ |
5bd4f169 AM |
999 | 0, /* bitpos */ |
1000 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 1001 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb AM |
1002 | "R_PPC64_PLTGOT16", /* name */ |
1003 | FALSE, /* partial_inplace */ | |
1004 | 0, /* src_mask */ | |
1005 | 0xffff, /* dst_mask */ | |
1006 | FALSE), /* pcrel_offset */ | |
1007 | ||
1008 | /* Like R_PPC64_PLTGOT16, but without overflow. */ | |
1009 | /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */ | |
1010 | HOWTO (R_PPC64_PLTGOT16_LO, /* type */ | |
1011 | 0, /* rightshift */ | |
1012 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1013 | 16, /* bitsize */ | |
1014 | FALSE, /* pc_relative */ | |
1015 | 0, /* bitpos */ | |
1016 | complain_overflow_dont, /* complain_on_overflow */ | |
1017 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1018 | "R_PPC64_PLTGOT16_LO", /* name */ | |
1019 | FALSE, /* partial_inplace */ | |
1020 | 0, /* src_mask */ | |
1021 | 0xffff, /* dst_mask */ | |
1022 | FALSE), /* pcrel_offset */ | |
1023 | ||
1024 | /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address. */ | |
1025 | /* FIXME: R_PPC64_PLTGOT16_HI not implemented. */ | |
1026 | HOWTO (R_PPC64_PLTGOT16_HI, /* type */ | |
1027 | 16, /* rightshift */ | |
1028 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1029 | 16, /* bitsize */ | |
1030 | FALSE, /* pc_relative */ | |
1031 | 0, /* bitpos */ | |
1032 | complain_overflow_dont, /* complain_on_overflow */ | |
1033 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1034 | "R_PPC64_PLTGOT16_HI", /* name */ | |
1035 | FALSE, /* partial_inplace */ | |
1036 | 0, /* src_mask */ | |
1037 | 0xffff, /* dst_mask */ | |
1038 | FALSE), /* pcrel_offset */ | |
1039 | ||
1040 | /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address, plus | |
1041 | 1 if the contents of the low 16 bits, treated as a signed number, | |
1042 | is negative. */ | |
1043 | /* FIXME: R_PPC64_PLTGOT16_HA not implemented. */ | |
1044 | HOWTO (R_PPC64_PLTGOT16_HA, /* type */ | |
1045 | 16, /* rightshift */ | |
1046 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1047 | 16, /* bitsize */ | |
1048 | FALSE, /* pc_relative */ | |
1049 | 0, /* bitpos */ | |
1050 | complain_overflow_dont,/* complain_on_overflow */ | |
1051 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1052 | "R_PPC64_PLTGOT16_HA", /* name */ | |
1053 | FALSE, /* partial_inplace */ | |
1054 | 0, /* src_mask */ | |
1055 | 0xffff, /* dst_mask */ | |
1056 | FALSE), /* pcrel_offset */ | |
1057 | ||
1058 | /* Like R_PPC64_ADDR16, but for instructions with a DS field. */ | |
1059 | HOWTO (R_PPC64_ADDR16_DS, /* type */ | |
1060 | 0, /* rightshift */ | |
1061 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1062 | 16, /* bitsize */ | |
1063 | FALSE, /* pc_relative */ | |
1064 | 0, /* bitpos */ | |
1065 | complain_overflow_bitfield, /* complain_on_overflow */ | |
1066 | bfd_elf_generic_reloc, /* special_function */ | |
1067 | "R_PPC64_ADDR16_DS", /* name */ | |
1068 | FALSE, /* partial_inplace */ | |
1069 | 0, /* src_mask */ | |
1070 | 0xfffc, /* dst_mask */ | |
1071 | FALSE), /* pcrel_offset */ | |
1072 | ||
1073 | /* Like R_PPC64_ADDR16_LO, but for instructions with a DS field. */ | |
1074 | HOWTO (R_PPC64_ADDR16_LO_DS, /* type */ | |
1075 | 0, /* rightshift */ | |
1076 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1077 | 16, /* bitsize */ | |
1078 | FALSE, /* pc_relative */ | |
1079 | 0, /* bitpos */ | |
1080 | complain_overflow_dont,/* complain_on_overflow */ | |
1081 | bfd_elf_generic_reloc, /* special_function */ | |
1082 | "R_PPC64_ADDR16_LO_DS",/* name */ | |
1083 | FALSE, /* partial_inplace */ | |
1084 | 0, /* src_mask */ | |
1085 | 0xfffc, /* dst_mask */ | |
1086 | FALSE), /* pcrel_offset */ | |
1087 | ||
1088 | /* Like R_PPC64_GOT16, but for instructions with a DS field. */ | |
1089 | HOWTO (R_PPC64_GOT16_DS, /* type */ | |
1090 | 0, /* rightshift */ | |
1091 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1092 | 16, /* bitsize */ | |
1093 | FALSE, /* pc_relative */ | |
1094 | 0, /* bitpos */ | |
1095 | complain_overflow_signed, /* complain_on_overflow */ | |
1096 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1097 | "R_PPC64_GOT16_DS", /* name */ | |
1098 | FALSE, /* partial_inplace */ | |
1099 | 0, /* src_mask */ | |
1100 | 0xfffc, /* dst_mask */ | |
1101 | FALSE), /* pcrel_offset */ | |
1102 | ||
1103 | /* Like R_PPC64_GOT16_LO, but for instructions with a DS field. */ | |
1104 | HOWTO (R_PPC64_GOT16_LO_DS, /* type */ | |
1105 | 0, /* rightshift */ | |
1106 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1107 | 16, /* bitsize */ | |
1108 | FALSE, /* pc_relative */ | |
1109 | 0, /* bitpos */ | |
1110 | complain_overflow_dont, /* complain_on_overflow */ | |
1111 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1112 | "R_PPC64_GOT16_LO_DS", /* name */ | |
1113 | FALSE, /* partial_inplace */ | |
1114 | 0, /* src_mask */ | |
1115 | 0xfffc, /* dst_mask */ | |
1116 | FALSE), /* pcrel_offset */ | |
1117 | ||
1118 | /* Like R_PPC64_PLT16_LO, but for instructions with a DS field. */ | |
1119 | HOWTO (R_PPC64_PLT16_LO_DS, /* type */ | |
1120 | 0, /* rightshift */ | |
1121 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1122 | 16, /* bitsize */ | |
1123 | FALSE, /* pc_relative */ | |
1124 | 0, /* bitpos */ | |
1125 | complain_overflow_dont, /* complain_on_overflow */ | |
1126 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1127 | "R_PPC64_PLT16_LO_DS", /* name */ | |
1128 | FALSE, /* partial_inplace */ | |
1129 | 0, /* src_mask */ | |
1130 | 0xfffc, /* dst_mask */ | |
1131 | FALSE), /* pcrel_offset */ | |
1132 | ||
1133 | /* Like R_PPC64_SECTOFF, but for instructions with a DS field. */ | |
1134 | HOWTO (R_PPC64_SECTOFF_DS, /* type */ | |
1135 | 0, /* rightshift */ | |
1136 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1137 | 16, /* bitsize */ | |
1138 | FALSE, /* pc_relative */ | |
1139 | 0, /* bitpos */ | |
1140 | complain_overflow_bitfield, /* complain_on_overflow */ | |
1141 | ppc64_elf_sectoff_reloc, /* special_function */ | |
1142 | "R_PPC64_SECTOFF_DS", /* name */ | |
1143 | FALSE, /* partial_inplace */ | |
1144 | 0, /* src_mask */ | |
1145 | 0xfffc, /* dst_mask */ | |
1146 | FALSE), /* pcrel_offset */ | |
1147 | ||
1148 | /* Like R_PPC64_SECTOFF_LO, but for instructions with a DS field. */ | |
1149 | HOWTO (R_PPC64_SECTOFF_LO_DS, /* type */ | |
1150 | 0, /* rightshift */ | |
1151 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1152 | 16, /* bitsize */ | |
1153 | FALSE, /* pc_relative */ | |
1154 | 0, /* bitpos */ | |
1155 | complain_overflow_dont, /* complain_on_overflow */ | |
1156 | ppc64_elf_sectoff_reloc, /* special_function */ | |
1157 | "R_PPC64_SECTOFF_LO_DS",/* name */ | |
1158 | FALSE, /* partial_inplace */ | |
1159 | 0, /* src_mask */ | |
1160 | 0xfffc, /* dst_mask */ | |
1161 | FALSE), /* pcrel_offset */ | |
1162 | ||
1163 | /* Like R_PPC64_TOC16, but for instructions with a DS field. */ | |
1164 | HOWTO (R_PPC64_TOC16_DS, /* type */ | |
1165 | 0, /* rightshift */ | |
1166 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1167 | 16, /* bitsize */ | |
1168 | FALSE, /* pc_relative */ | |
1169 | 0, /* bitpos */ | |
1170 | complain_overflow_signed, /* complain_on_overflow */ | |
1171 | ppc64_elf_toc_reloc, /* special_function */ | |
1172 | "R_PPC64_TOC16_DS", /* name */ | |
1173 | FALSE, /* partial_inplace */ | |
1174 | 0, /* src_mask */ | |
1175 | 0xfffc, /* dst_mask */ | |
1176 | FALSE), /* pcrel_offset */ | |
1177 | ||
1178 | /* Like R_PPC64_TOC16_LO, but for instructions with a DS field. */ | |
1179 | HOWTO (R_PPC64_TOC16_LO_DS, /* type */ | |
1180 | 0, /* rightshift */ | |
1181 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1182 | 16, /* bitsize */ | |
1183 | FALSE, /* pc_relative */ | |
1184 | 0, /* bitpos */ | |
1185 | complain_overflow_dont, /* complain_on_overflow */ | |
1186 | ppc64_elf_toc_reloc, /* special_function */ | |
1187 | "R_PPC64_TOC16_LO_DS", /* name */ | |
1188 | FALSE, /* partial_inplace */ | |
1189 | 0, /* src_mask */ | |
1190 | 0xfffc, /* dst_mask */ | |
1191 | FALSE), /* pcrel_offset */ | |
1192 | ||
1193 | /* Like R_PPC64_PLTGOT16, but for instructions with a DS field. */ | |
1194 | /* FIXME: R_PPC64_PLTGOT16_DS not implemented. */ | |
1195 | HOWTO (R_PPC64_PLTGOT16_DS, /* type */ | |
1196 | 0, /* rightshift */ | |
1197 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1198 | 16, /* bitsize */ | |
1199 | FALSE, /* pc_relative */ | |
1200 | 0, /* bitpos */ | |
1201 | complain_overflow_signed, /* complain_on_overflow */ | |
1202 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1203 | "R_PPC64_PLTGOT16_DS", /* name */ | |
1204 | FALSE, /* partial_inplace */ | |
1205 | 0, /* src_mask */ | |
1206 | 0xfffc, /* dst_mask */ | |
1207 | FALSE), /* pcrel_offset */ | |
1208 | ||
1209 | /* Like R_PPC64_PLTGOT16_LO, but for instructions with a DS field. */ | |
1210 | /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */ | |
1211 | HOWTO (R_PPC64_PLTGOT16_LO_DS,/* type */ | |
1212 | 0, /* rightshift */ | |
1213 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1214 | 16, /* bitsize */ | |
1215 | FALSE, /* pc_relative */ | |
1216 | 0, /* bitpos */ | |
1217 | complain_overflow_dont, /* complain_on_overflow */ | |
1218 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1219 | "R_PPC64_PLTGOT16_LO_DS",/* name */ | |
1220 | FALSE, /* partial_inplace */ | |
1221 | 0, /* src_mask */ | |
1222 | 0xfffc, /* dst_mask */ | |
1223 | FALSE), /* pcrel_offset */ | |
1224 | ||
1225 | /* Marker reloc for TLS. */ | |
1226 | HOWTO (R_PPC64_TLS, | |
1227 | 0, /* rightshift */ | |
1228 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1229 | 32, /* bitsize */ | |
1230 | FALSE, /* pc_relative */ | |
1231 | 0, /* bitpos */ | |
1232 | complain_overflow_dont, /* complain_on_overflow */ | |
1233 | bfd_elf_generic_reloc, /* special_function */ | |
1234 | "R_PPC64_TLS", /* name */ | |
1235 | FALSE, /* partial_inplace */ | |
1236 | 0, /* src_mask */ | |
1237 | 0, /* dst_mask */ | |
1238 | FALSE), /* pcrel_offset */ | |
1239 | ||
1240 | /* Computes the load module index of the load module that contains the | |
1241 | definition of its TLS sym. */ | |
1242 | HOWTO (R_PPC64_DTPMOD64, | |
1243 | 0, /* rightshift */ | |
1244 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
1245 | 64, /* bitsize */ | |
1246 | FALSE, /* pc_relative */ | |
1247 | 0, /* bitpos */ | |
1248 | complain_overflow_dont, /* complain_on_overflow */ | |
1249 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1250 | "R_PPC64_DTPMOD64", /* name */ | |
1251 | FALSE, /* partial_inplace */ | |
1252 | 0, /* src_mask */ | |
1253 | ONES (64), /* dst_mask */ | |
1254 | FALSE), /* pcrel_offset */ | |
1255 | ||
1256 | /* Computes a dtv-relative displacement, the difference between the value | |
1257 | of sym+add and the base address of the thread-local storage block that | |
1258 | contains the definition of sym, minus 0x8000. */ | |
1259 | HOWTO (R_PPC64_DTPREL64, | |
1260 | 0, /* rightshift */ | |
1261 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
1262 | 64, /* bitsize */ | |
1263 | FALSE, /* pc_relative */ | |
1264 | 0, /* bitpos */ | |
1265 | complain_overflow_dont, /* complain_on_overflow */ | |
1266 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1267 | "R_PPC64_DTPREL64", /* name */ | |
1268 | FALSE, /* partial_inplace */ | |
1269 | 0, /* src_mask */ | |
1270 | ONES (64), /* dst_mask */ | |
1271 | FALSE), /* pcrel_offset */ | |
1272 | ||
1273 | /* A 16 bit dtprel reloc. */ | |
1274 | HOWTO (R_PPC64_DTPREL16, | |
1275 | 0, /* rightshift */ | |
1276 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1277 | 16, /* bitsize */ | |
1278 | FALSE, /* pc_relative */ | |
1279 | 0, /* bitpos */ | |
1280 | complain_overflow_signed, /* complain_on_overflow */ | |
1281 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1282 | "R_PPC64_DTPREL16", /* name */ | |
1283 | FALSE, /* partial_inplace */ | |
1284 | 0, /* src_mask */ | |
1285 | 0xffff, /* dst_mask */ | |
1286 | FALSE), /* pcrel_offset */ | |
1287 | ||
1288 | /* Like DTPREL16, but no overflow. */ | |
1289 | HOWTO (R_PPC64_DTPREL16_LO, | |
1290 | 0, /* rightshift */ | |
1291 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1292 | 16, /* bitsize */ | |
1293 | FALSE, /* pc_relative */ | |
1294 | 0, /* bitpos */ | |
1295 | complain_overflow_dont, /* complain_on_overflow */ | |
1296 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1297 | "R_PPC64_DTPREL16_LO", /* name */ | |
1298 | FALSE, /* partial_inplace */ | |
1299 | 0, /* src_mask */ | |
1300 | 0xffff, /* dst_mask */ | |
1301 | FALSE), /* pcrel_offset */ | |
1302 | ||
1303 | /* Like DTPREL16_LO, but next higher group of 16 bits. */ | |
1304 | HOWTO (R_PPC64_DTPREL16_HI, | |
1305 | 16, /* rightshift */ | |
1306 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1307 | 16, /* bitsize */ | |
1308 | FALSE, /* pc_relative */ | |
1309 | 0, /* bitpos */ | |
1310 | complain_overflow_dont, /* complain_on_overflow */ | |
1311 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1312 | "R_PPC64_DTPREL16_HI", /* name */ | |
1313 | FALSE, /* partial_inplace */ | |
1314 | 0, /* src_mask */ | |
1315 | 0xffff, /* dst_mask */ | |
1316 | FALSE), /* pcrel_offset */ | |
1317 | ||
1318 | /* Like DTPREL16_HI, but adjust for low 16 bits. */ | |
1319 | HOWTO (R_PPC64_DTPREL16_HA, | |
1320 | 16, /* rightshift */ | |
1321 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1322 | 16, /* bitsize */ | |
1323 | FALSE, /* pc_relative */ | |
1324 | 0, /* bitpos */ | |
1325 | complain_overflow_dont, /* complain_on_overflow */ | |
1326 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1327 | "R_PPC64_DTPREL16_HA", /* name */ | |
1328 | FALSE, /* partial_inplace */ | |
1329 | 0, /* src_mask */ | |
1330 | 0xffff, /* dst_mask */ | |
1331 | FALSE), /* pcrel_offset */ | |
1332 | ||
1333 | /* Like DTPREL16_HI, but next higher group of 16 bits. */ | |
1334 | HOWTO (R_PPC64_DTPREL16_HIGHER, | |
1335 | 32, /* rightshift */ | |
1336 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1337 | 16, /* bitsize */ | |
1338 | FALSE, /* pc_relative */ | |
1339 | 0, /* bitpos */ | |
1340 | complain_overflow_dont, /* complain_on_overflow */ | |
1341 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1342 | "R_PPC64_DTPREL16_HIGHER", /* name */ | |
1343 | FALSE, /* partial_inplace */ | |
1344 | 0, /* src_mask */ | |
1345 | 0xffff, /* dst_mask */ | |
1346 | FALSE), /* pcrel_offset */ | |
1347 | ||
1348 | /* Like DTPREL16_HIGHER, but adjust for low 16 bits. */ | |
1349 | HOWTO (R_PPC64_DTPREL16_HIGHERA, | |
1350 | 32, /* rightshift */ | |
1351 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1352 | 16, /* bitsize */ | |
1353 | FALSE, /* pc_relative */ | |
1354 | 0, /* bitpos */ | |
1355 | complain_overflow_dont, /* complain_on_overflow */ | |
1356 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1357 | "R_PPC64_DTPREL16_HIGHERA", /* name */ | |
1358 | FALSE, /* partial_inplace */ | |
1359 | 0, /* src_mask */ | |
1360 | 0xffff, /* dst_mask */ | |
1361 | FALSE), /* pcrel_offset */ | |
1362 | ||
1363 | /* Like DTPREL16_HIGHER, but next higher group of 16 bits. */ | |
1364 | HOWTO (R_PPC64_DTPREL16_HIGHEST, | |
1365 | 48, /* rightshift */ | |
1366 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1367 | 16, /* bitsize */ | |
1368 | FALSE, /* pc_relative */ | |
1369 | 0, /* bitpos */ | |
1370 | complain_overflow_dont, /* complain_on_overflow */ | |
1371 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1372 | "R_PPC64_DTPREL16_HIGHEST", /* name */ | |
1373 | FALSE, /* partial_inplace */ | |
1374 | 0, /* src_mask */ | |
1375 | 0xffff, /* dst_mask */ | |
1376 | FALSE), /* pcrel_offset */ | |
1377 | ||
1378 | /* Like DTPREL16_HIGHEST, but adjust for low 16 bits. */ | |
1379 | HOWTO (R_PPC64_DTPREL16_HIGHESTA, | |
1380 | 48, /* rightshift */ | |
1381 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1382 | 16, /* bitsize */ | |
1383 | FALSE, /* pc_relative */ | |
1384 | 0, /* bitpos */ | |
1385 | complain_overflow_dont, /* complain_on_overflow */ | |
1386 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1387 | "R_PPC64_DTPREL16_HIGHESTA", /* name */ | |
1388 | FALSE, /* partial_inplace */ | |
1389 | 0, /* src_mask */ | |
1390 | 0xffff, /* dst_mask */ | |
1391 | FALSE), /* pcrel_offset */ | |
1392 | ||
1393 | /* Like DTPREL16, but for insns with a DS field. */ | |
1394 | HOWTO (R_PPC64_DTPREL16_DS, | |
1395 | 0, /* rightshift */ | |
1396 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1397 | 16, /* bitsize */ | |
1398 | FALSE, /* pc_relative */ | |
1399 | 0, /* bitpos */ | |
1400 | complain_overflow_signed, /* complain_on_overflow */ | |
1401 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1402 | "R_PPC64_DTPREL16_DS", /* name */ | |
1403 | FALSE, /* partial_inplace */ | |
1404 | 0, /* src_mask */ | |
1405 | 0xfffc, /* dst_mask */ | |
1406 | FALSE), /* pcrel_offset */ | |
1407 | ||
1408 | /* Like DTPREL16_DS, but no overflow. */ | |
1409 | HOWTO (R_PPC64_DTPREL16_LO_DS, | |
1410 | 0, /* rightshift */ | |
1411 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1412 | 16, /* bitsize */ | |
1413 | FALSE, /* pc_relative */ | |
1414 | 0, /* bitpos */ | |
1415 | complain_overflow_dont, /* complain_on_overflow */ | |
1416 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1417 | "R_PPC64_DTPREL16_LO_DS", /* name */ | |
1418 | FALSE, /* partial_inplace */ | |
1419 | 0, /* src_mask */ | |
1420 | 0xfffc, /* dst_mask */ | |
1421 | FALSE), /* pcrel_offset */ | |
1422 | ||
1423 | /* Computes a tp-relative displacement, the difference between the value of | |
1424 | sym+add and the value of the thread pointer (r13). */ | |
1425 | HOWTO (R_PPC64_TPREL64, | |
1426 | 0, /* rightshift */ | |
1427 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
1428 | 64, /* bitsize */ | |
1429 | FALSE, /* pc_relative */ | |
1430 | 0, /* bitpos */ | |
1431 | complain_overflow_dont, /* complain_on_overflow */ | |
1432 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1433 | "R_PPC64_TPREL64", /* name */ | |
1434 | FALSE, /* partial_inplace */ | |
1435 | 0, /* src_mask */ | |
1436 | ONES (64), /* dst_mask */ | |
1437 | FALSE), /* pcrel_offset */ | |
1438 | ||
1439 | /* A 16 bit tprel reloc. */ | |
1440 | HOWTO (R_PPC64_TPREL16, | |
1441 | 0, /* rightshift */ | |
1442 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1443 | 16, /* bitsize */ | |
1444 | FALSE, /* pc_relative */ | |
1445 | 0, /* bitpos */ | |
1446 | complain_overflow_signed, /* complain_on_overflow */ | |
1447 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1448 | "R_PPC64_TPREL16", /* name */ | |
1449 | FALSE, /* partial_inplace */ | |
1450 | 0, /* src_mask */ | |
1451 | 0xffff, /* dst_mask */ | |
1452 | FALSE), /* pcrel_offset */ | |
1453 | ||
1454 | /* Like TPREL16, but no overflow. */ | |
1455 | HOWTO (R_PPC64_TPREL16_LO, | |
1456 | 0, /* rightshift */ | |
1457 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1458 | 16, /* bitsize */ | |
1459 | FALSE, /* pc_relative */ | |
1460 | 0, /* bitpos */ | |
1461 | complain_overflow_dont, /* complain_on_overflow */ | |
1462 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1463 | "R_PPC64_TPREL16_LO", /* name */ | |
1464 | FALSE, /* partial_inplace */ | |
1465 | 0, /* src_mask */ | |
1466 | 0xffff, /* dst_mask */ | |
1467 | FALSE), /* pcrel_offset */ | |
1468 | ||
1469 | /* Like TPREL16_LO, but next higher group of 16 bits. */ | |
1470 | HOWTO (R_PPC64_TPREL16_HI, | |
1471 | 16, /* rightshift */ | |
1472 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1473 | 16, /* bitsize */ | |
1474 | FALSE, /* pc_relative */ | |
1475 | 0, /* bitpos */ | |
1476 | complain_overflow_dont, /* complain_on_overflow */ | |
1477 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1478 | "R_PPC64_TPREL16_HI", /* name */ | |
1479 | FALSE, /* partial_inplace */ | |
1480 | 0, /* src_mask */ | |
1481 | 0xffff, /* dst_mask */ | |
1482 | FALSE), /* pcrel_offset */ | |
1483 | ||
1484 | /* Like TPREL16_HI, but adjust for low 16 bits. */ | |
1485 | HOWTO (R_PPC64_TPREL16_HA, | |
1486 | 16, /* rightshift */ | |
1487 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1488 | 16, /* bitsize */ | |
1489 | FALSE, /* pc_relative */ | |
1490 | 0, /* bitpos */ | |
1491 | complain_overflow_dont, /* complain_on_overflow */ | |
1492 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1493 | "R_PPC64_TPREL16_HA", /* name */ | |
1494 | FALSE, /* partial_inplace */ | |
1495 | 0, /* src_mask */ | |
1496 | 0xffff, /* dst_mask */ | |
1497 | FALSE), /* pcrel_offset */ | |
1498 | ||
1499 | /* Like TPREL16_HI, but next higher group of 16 bits. */ | |
1500 | HOWTO (R_PPC64_TPREL16_HIGHER, | |
1501 | 32, /* rightshift */ | |
1502 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1503 | 16, /* bitsize */ | |
1504 | FALSE, /* pc_relative */ | |
1505 | 0, /* bitpos */ | |
1506 | complain_overflow_dont, /* complain_on_overflow */ | |
1507 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1508 | "R_PPC64_TPREL16_HIGHER", /* name */ | |
1509 | FALSE, /* partial_inplace */ | |
1510 | 0, /* src_mask */ | |
1511 | 0xffff, /* dst_mask */ | |
1512 | FALSE), /* pcrel_offset */ | |
1513 | ||
1514 | /* Like TPREL16_HIGHER, but adjust for low 16 bits. */ | |
1515 | HOWTO (R_PPC64_TPREL16_HIGHERA, | |
1516 | 32, /* rightshift */ | |
1517 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1518 | 16, /* bitsize */ | |
1519 | FALSE, /* pc_relative */ | |
1520 | 0, /* bitpos */ | |
1521 | complain_overflow_dont, /* complain_on_overflow */ | |
1522 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1523 | "R_PPC64_TPREL16_HIGHERA", /* name */ | |
1524 | FALSE, /* partial_inplace */ | |
1525 | 0, /* src_mask */ | |
1526 | 0xffff, /* dst_mask */ | |
1527 | FALSE), /* pcrel_offset */ | |
1528 | ||
1529 | /* Like TPREL16_HIGHER, but next higher group of 16 bits. */ | |
1530 | HOWTO (R_PPC64_TPREL16_HIGHEST, | |
1531 | 48, /* rightshift */ | |
1532 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1533 | 16, /* bitsize */ | |
1534 | FALSE, /* pc_relative */ | |
1535 | 0, /* bitpos */ | |
1536 | complain_overflow_dont, /* complain_on_overflow */ | |
1537 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1538 | "R_PPC64_TPREL16_HIGHEST", /* name */ | |
1539 | FALSE, /* partial_inplace */ | |
1540 | 0, /* src_mask */ | |
1541 | 0xffff, /* dst_mask */ | |
1542 | FALSE), /* pcrel_offset */ | |
1543 | ||
1544 | /* Like TPREL16_HIGHEST, but adjust for low 16 bits. */ | |
1545 | HOWTO (R_PPC64_TPREL16_HIGHESTA, | |
1546 | 48, /* rightshift */ | |
1547 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1548 | 16, /* bitsize */ | |
1549 | FALSE, /* pc_relative */ | |
1550 | 0, /* bitpos */ | |
1551 | complain_overflow_dont, /* complain_on_overflow */ | |
1552 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1553 | "R_PPC64_TPREL16_HIGHESTA", /* name */ | |
1554 | FALSE, /* partial_inplace */ | |
1555 | 0, /* src_mask */ | |
1556 | 0xffff, /* dst_mask */ | |
1557 | FALSE), /* pcrel_offset */ | |
1558 | ||
1559 | /* Like TPREL16, but for insns with a DS field. */ | |
1560 | HOWTO (R_PPC64_TPREL16_DS, | |
1561 | 0, /* rightshift */ | |
1562 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1563 | 16, /* bitsize */ | |
1564 | FALSE, /* pc_relative */ | |
1565 | 0, /* bitpos */ | |
1566 | complain_overflow_signed, /* complain_on_overflow */ | |
1567 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1568 | "R_PPC64_TPREL16_DS", /* name */ | |
1569 | FALSE, /* partial_inplace */ | |
1570 | 0, /* src_mask */ | |
1571 | 0xfffc, /* dst_mask */ | |
1572 | FALSE), /* pcrel_offset */ | |
1573 | ||
1574 | /* Like TPREL16_DS, but no overflow. */ | |
1575 | HOWTO (R_PPC64_TPREL16_LO_DS, | |
1576 | 0, /* rightshift */ | |
1577 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1578 | 16, /* bitsize */ | |
1579 | FALSE, /* pc_relative */ | |
1580 | 0, /* bitpos */ | |
1581 | complain_overflow_dont, /* complain_on_overflow */ | |
1582 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1583 | "R_PPC64_TPREL16_LO_DS", /* name */ | |
1584 | FALSE, /* partial_inplace */ | |
1585 | 0, /* src_mask */ | |
1586 | 0xfffc, /* dst_mask */ | |
1587 | FALSE), /* pcrel_offset */ | |
1588 | ||
1589 | /* Allocates two contiguous entries in the GOT to hold a tls_index structure, | |
1590 | with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset | |
1591 | to the first entry relative to the TOC base (r2). */ | |
1592 | HOWTO (R_PPC64_GOT_TLSGD16, | |
1593 | 0, /* rightshift */ | |
1594 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1595 | 16, /* bitsize */ | |
1596 | FALSE, /* pc_relative */ | |
1597 | 0, /* bitpos */ | |
1598 | complain_overflow_signed, /* complain_on_overflow */ | |
1599 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1600 | "R_PPC64_GOT_TLSGD16", /* name */ | |
b34976b6 | 1601 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1602 | 0, /* src_mask */ |
1603 | 0xffff, /* dst_mask */ | |
b34976b6 | 1604 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1605 | |
411e1bfb AM |
1606 | /* Like GOT_TLSGD16, but no overflow. */ |
1607 | HOWTO (R_PPC64_GOT_TLSGD16_LO, | |
5bd4f169 AM |
1608 | 0, /* rightshift */ |
1609 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1610 | 16, /* bitsize */ | |
b34976b6 | 1611 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1612 | 0, /* bitpos */ |
1613 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 1614 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1615 | "R_PPC64_GOT_TLSGD16_LO", /* name */ |
b34976b6 | 1616 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1617 | 0, /* src_mask */ |
1618 | 0xffff, /* dst_mask */ | |
b34976b6 | 1619 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1620 | |
411e1bfb AM |
1621 | /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */ |
1622 | HOWTO (R_PPC64_GOT_TLSGD16_HI, | |
5bd4f169 AM |
1623 | 16, /* rightshift */ |
1624 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1625 | 16, /* bitsize */ | |
b34976b6 | 1626 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1627 | 0, /* bitpos */ |
1628 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 1629 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1630 | "R_PPC64_GOT_TLSGD16_HI", /* name */ |
b34976b6 | 1631 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1632 | 0, /* src_mask */ |
1633 | 0xffff, /* dst_mask */ | |
b34976b6 | 1634 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1635 | |
411e1bfb AM |
1636 | /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */ |
1637 | HOWTO (R_PPC64_GOT_TLSGD16_HA, | |
5bd4f169 AM |
1638 | 16, /* rightshift */ |
1639 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1640 | 16, /* bitsize */ | |
b34976b6 | 1641 | FALSE, /* pc_relative */ |
5bd4f169 | 1642 | 0, /* bitpos */ |
411e1bfb | 1643 | complain_overflow_dont, /* complain_on_overflow */ |
805fc799 | 1644 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1645 | "R_PPC64_GOT_TLSGD16_HA", /* name */ |
b34976b6 | 1646 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1647 | 0, /* src_mask */ |
1648 | 0xffff, /* dst_mask */ | |
b34976b6 | 1649 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1650 | |
411e1bfb AM |
1651 | /* Allocates two contiguous entries in the GOT to hold a tls_index structure, |
1652 | with values (sym+add)@dtpmod and zero, and computes the offset to the | |
1653 | first entry relative to the TOC base (r2). */ | |
1654 | HOWTO (R_PPC64_GOT_TLSLD16, | |
5bd4f169 AM |
1655 | 0, /* rightshift */ |
1656 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1657 | 16, /* bitsize */ | |
b34976b6 | 1658 | FALSE, /* pc_relative */ |
5bd4f169 | 1659 | 0, /* bitpos */ |
411e1bfb AM |
1660 | complain_overflow_signed, /* complain_on_overflow */ |
1661 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1662 | "R_PPC64_GOT_TLSLD16", /* name */ | |
b34976b6 | 1663 | FALSE, /* partial_inplace */ |
d006db6c | 1664 | 0, /* src_mask */ |
411e1bfb | 1665 | 0xffff, /* dst_mask */ |
b34976b6 | 1666 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1667 | |
411e1bfb AM |
1668 | /* Like GOT_TLSLD16, but no overflow. */ |
1669 | HOWTO (R_PPC64_GOT_TLSLD16_LO, | |
5bd4f169 AM |
1670 | 0, /* rightshift */ |
1671 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1672 | 16, /* bitsize */ | |
b34976b6 | 1673 | FALSE, /* pc_relative */ |
5bd4f169 | 1674 | 0, /* bitpos */ |
411e1bfb AM |
1675 | complain_overflow_dont, /* complain_on_overflow */ |
1676 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1677 | "R_PPC64_GOT_TLSLD16_LO", /* name */ | |
b34976b6 | 1678 | FALSE, /* partial_inplace */ |
d006db6c | 1679 | 0, /* src_mask */ |
411e1bfb | 1680 | 0xffff, /* dst_mask */ |
b34976b6 | 1681 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1682 | |
411e1bfb AM |
1683 | /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */ |
1684 | HOWTO (R_PPC64_GOT_TLSLD16_HI, | |
1685 | 16, /* rightshift */ | |
5bd4f169 AM |
1686 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1687 | 16, /* bitsize */ | |
b34976b6 | 1688 | FALSE, /* pc_relative */ |
5bd4f169 | 1689 | 0, /* bitpos */ |
411e1bfb | 1690 | complain_overflow_dont, /* complain_on_overflow */ |
805fc799 | 1691 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1692 | "R_PPC64_GOT_TLSLD16_HI", /* name */ |
b34976b6 | 1693 | FALSE, /* partial_inplace */ |
d006db6c | 1694 | 0, /* src_mask */ |
411e1bfb | 1695 | 0xffff, /* dst_mask */ |
b34976b6 | 1696 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1697 | |
411e1bfb AM |
1698 | /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */ |
1699 | HOWTO (R_PPC64_GOT_TLSLD16_HA, | |
1700 | 16, /* rightshift */ | |
5bd4f169 AM |
1701 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1702 | 16, /* bitsize */ | |
b34976b6 | 1703 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1704 | 0, /* bitpos */ |
1705 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 1706 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1707 | "R_PPC64_GOT_TLSLD16_HA", /* name */ |
b34976b6 | 1708 | FALSE, /* partial_inplace */ |
d006db6c | 1709 | 0, /* src_mask */ |
411e1bfb | 1710 | 0xffff, /* dst_mask */ |
b34976b6 | 1711 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1712 | |
411e1bfb AM |
1713 | /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes |
1714 | the offset to the entry relative to the TOC base (r2). */ | |
1715 | HOWTO (R_PPC64_GOT_DTPREL16_DS, | |
5bd4f169 AM |
1716 | 0, /* rightshift */ |
1717 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1718 | 16, /* bitsize */ | |
b34976b6 | 1719 | FALSE, /* pc_relative */ |
5bd4f169 | 1720 | 0, /* bitpos */ |
411e1bfb | 1721 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 1722 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1723 | "R_PPC64_GOT_DTPREL16_DS", /* name */ |
b34976b6 | 1724 | FALSE, /* partial_inplace */ |
d006db6c | 1725 | 0, /* src_mask */ |
5bd4f169 | 1726 | 0xfffc, /* dst_mask */ |
b34976b6 | 1727 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1728 | |
411e1bfb AM |
1729 | /* Like GOT_DTPREL16_DS, but no overflow. */ |
1730 | HOWTO (R_PPC64_GOT_DTPREL16_LO_DS, | |
5bd4f169 | 1731 | 0, /* rightshift */ |
c061c2d8 AM |
1732 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1733 | 16, /* bitsize */ | |
b34976b6 | 1734 | FALSE, /* pc_relative */ |
5bd4f169 | 1735 | 0, /* bitpos */ |
411e1bfb AM |
1736 | complain_overflow_dont, /* complain_on_overflow */ |
1737 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1738 | "R_PPC64_GOT_DTPREL16_LO_DS", /* name */ | |
b34976b6 | 1739 | FALSE, /* partial_inplace */ |
d006db6c | 1740 | 0, /* src_mask */ |
c061c2d8 | 1741 | 0xfffc, /* dst_mask */ |
b34976b6 | 1742 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1743 | |
411e1bfb AM |
1744 | /* Like GOT_DTPREL16_LO_DS, but next higher group of 16 bits. */ |
1745 | HOWTO (R_PPC64_GOT_DTPREL16_HI, | |
1746 | 16, /* rightshift */ | |
5bd4f169 AM |
1747 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1748 | 16, /* bitsize */ | |
b34976b6 | 1749 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1750 | 0, /* bitpos */ |
1751 | complain_overflow_dont, /* complain_on_overflow */ | |
411e1bfb AM |
1752 | ppc64_elf_unhandled_reloc, /* special_function */ |
1753 | "R_PPC64_GOT_DTPREL16_HI", /* name */ | |
b34976b6 | 1754 | FALSE, /* partial_inplace */ |
d006db6c | 1755 | 0, /* src_mask */ |
411e1bfb | 1756 | 0xffff, /* dst_mask */ |
b34976b6 | 1757 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1758 | |
411e1bfb AM |
1759 | /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */ |
1760 | HOWTO (R_PPC64_GOT_DTPREL16_HA, | |
1761 | 16, /* rightshift */ | |
1762 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1763 | 16, /* bitsize */ | |
1764 | FALSE, /* pc_relative */ | |
1765 | 0, /* bitpos */ | |
1766 | complain_overflow_dont, /* complain_on_overflow */ | |
1767 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1768 | "R_PPC64_GOT_DTPREL16_HA", /* name */ | |
1769 | FALSE, /* partial_inplace */ | |
1770 | 0, /* src_mask */ | |
1771 | 0xffff, /* dst_mask */ | |
1772 | FALSE), /* pcrel_offset */ | |
1773 | ||
1774 | /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the | |
1775 | offset to the entry relative to the TOC base (r2). */ | |
1776 | HOWTO (R_PPC64_GOT_TPREL16_DS, | |
5bd4f169 AM |
1777 | 0, /* rightshift */ |
1778 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1779 | 16, /* bitsize */ | |
b34976b6 | 1780 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1781 | 0, /* bitpos */ |
1782 | complain_overflow_signed, /* complain_on_overflow */ | |
411e1bfb AM |
1783 | ppc64_elf_unhandled_reloc, /* special_function */ |
1784 | "R_PPC64_GOT_TPREL16_DS", /* name */ | |
b34976b6 | 1785 | FALSE, /* partial_inplace */ |
d006db6c | 1786 | 0, /* src_mask */ |
ad8e1ba5 | 1787 | 0xfffc, /* dst_mask */ |
b34976b6 | 1788 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1789 | |
411e1bfb AM |
1790 | /* Like GOT_TPREL16_DS, but no overflow. */ |
1791 | HOWTO (R_PPC64_GOT_TPREL16_LO_DS, | |
5bd4f169 AM |
1792 | 0, /* rightshift */ |
1793 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1794 | 16, /* bitsize */ | |
b34976b6 | 1795 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1796 | 0, /* bitpos */ |
1797 | complain_overflow_dont, /* complain_on_overflow */ | |
411e1bfb AM |
1798 | ppc64_elf_unhandled_reloc, /* special_function */ |
1799 | "R_PPC64_GOT_TPREL16_LO_DS", /* name */ | |
b34976b6 | 1800 | FALSE, /* partial_inplace */ |
d006db6c | 1801 | 0, /* src_mask */ |
ad8e1ba5 | 1802 | 0xfffc, /* dst_mask */ |
b34976b6 | 1803 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1804 | |
411e1bfb AM |
1805 | /* Like GOT_TPREL16_LO_DS, but next higher group of 16 bits. */ |
1806 | HOWTO (R_PPC64_GOT_TPREL16_HI, | |
1807 | 16, /* rightshift */ | |
5bd4f169 AM |
1808 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1809 | 16, /* bitsize */ | |
b34976b6 | 1810 | FALSE, /* pc_relative */ |
5bd4f169 | 1811 | 0, /* bitpos */ |
411e1bfb | 1812 | complain_overflow_dont, /* complain_on_overflow */ |
805fc799 | 1813 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1814 | "R_PPC64_GOT_TPREL16_HI", /* name */ |
b34976b6 | 1815 | FALSE, /* partial_inplace */ |
d006db6c | 1816 | 0, /* src_mask */ |
411e1bfb | 1817 | 0xffff, /* dst_mask */ |
b34976b6 | 1818 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1819 | |
411e1bfb AM |
1820 | /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */ |
1821 | HOWTO (R_PPC64_GOT_TPREL16_HA, | |
1822 | 16, /* rightshift */ | |
5bd4f169 AM |
1823 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1824 | 16, /* bitsize */ | |
b34976b6 | 1825 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1826 | 0, /* bitpos */ |
1827 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 1828 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1829 | "R_PPC64_GOT_TPREL16_HA", /* name */ |
b34976b6 | 1830 | FALSE, /* partial_inplace */ |
d006db6c | 1831 | 0, /* src_mask */ |
411e1bfb | 1832 | 0xffff, /* dst_mask */ |
b34976b6 | 1833 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
1834 | |
1835 | /* GNU extension to record C++ vtable hierarchy. */ | |
1836 | HOWTO (R_PPC64_GNU_VTINHERIT, /* type */ | |
1837 | 0, /* rightshift */ | |
1838 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
1839 | 0, /* bitsize */ | |
b34976b6 | 1840 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1841 | 0, /* bitpos */ |
1842 | complain_overflow_dont, /* complain_on_overflow */ | |
1843 | NULL, /* special_function */ | |
1844 | "R_PPC64_GNU_VTINHERIT", /* name */ | |
b34976b6 | 1845 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1846 | 0, /* src_mask */ |
1847 | 0, /* dst_mask */ | |
b34976b6 | 1848 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
1849 | |
1850 | /* GNU extension to record C++ vtable member usage. */ | |
1851 | HOWTO (R_PPC64_GNU_VTENTRY, /* type */ | |
1852 | 0, /* rightshift */ | |
1853 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
1854 | 0, /* bitsize */ | |
b34976b6 | 1855 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1856 | 0, /* bitpos */ |
1857 | complain_overflow_dont, /* complain_on_overflow */ | |
1858 | NULL, /* special_function */ | |
1859 | "R_PPC64_GNU_VTENTRY", /* name */ | |
b34976b6 | 1860 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1861 | 0, /* src_mask */ |
1862 | 0, /* dst_mask */ | |
b34976b6 | 1863 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
1864 | }; |
1865 | ||
1866 | \f | |
1867 | /* Initialize the ppc64_elf_howto_table, so that linear accesses can | |
1868 | be done. */ | |
1869 | ||
1870 | static void | |
4ce794b7 | 1871 | ppc_howto_init (void) |
5bd4f169 AM |
1872 | { |
1873 | unsigned int i, type; | |
1874 | ||
1875 | for (i = 0; | |
1876 | i < sizeof (ppc64_elf_howto_raw) / sizeof (ppc64_elf_howto_raw[0]); | |
1877 | i++) | |
1878 | { | |
1879 | type = ppc64_elf_howto_raw[i].type; | |
1880 | BFD_ASSERT (type < (sizeof (ppc64_elf_howto_table) | |
1881 | / sizeof (ppc64_elf_howto_table[0]))); | |
1882 | ppc64_elf_howto_table[type] = &ppc64_elf_howto_raw[i]; | |
1883 | } | |
1884 | } | |
1885 | ||
1886 | static reloc_howto_type * | |
4ce794b7 AM |
1887 | ppc64_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, |
1888 | bfd_reloc_code_real_type code) | |
5bd4f169 | 1889 | { |
411e1bfb | 1890 | enum elf_ppc64_reloc_type r = R_PPC64_NONE; |
5bd4f169 AM |
1891 | |
1892 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) | |
1893 | /* Initialize howto table if needed. */ | |
1894 | ppc_howto_init (); | |
1895 | ||
4ce794b7 | 1896 | switch (code) |
5bd4f169 AM |
1897 | { |
1898 | default: | |
4ce794b7 | 1899 | return NULL; |
5bd4f169 | 1900 | |
411e1bfb AM |
1901 | case BFD_RELOC_NONE: r = R_PPC64_NONE; |
1902 | break; | |
1903 | case BFD_RELOC_32: r = R_PPC64_ADDR32; | |
1904 | break; | |
1905 | case BFD_RELOC_PPC_BA26: r = R_PPC64_ADDR24; | |
1906 | break; | |
1907 | case BFD_RELOC_16: r = R_PPC64_ADDR16; | |
1908 | break; | |
1909 | case BFD_RELOC_LO16: r = R_PPC64_ADDR16_LO; | |
1910 | break; | |
1911 | case BFD_RELOC_HI16: r = R_PPC64_ADDR16_HI; | |
1912 | break; | |
1913 | case BFD_RELOC_HI16_S: r = R_PPC64_ADDR16_HA; | |
5bd4f169 | 1914 | break; |
411e1bfb | 1915 | case BFD_RELOC_PPC_BA16: r = R_PPC64_ADDR14; |
5bd4f169 | 1916 | break; |
411e1bfb | 1917 | case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC64_ADDR14_BRTAKEN; |
5bd4f169 | 1918 | break; |
411e1bfb | 1919 | case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC64_ADDR14_BRNTAKEN; |
5bd4f169 | 1920 | break; |
411e1bfb | 1921 | case BFD_RELOC_PPC_B26: r = R_PPC64_REL24; |
5bd4f169 | 1922 | break; |
411e1bfb | 1923 | case BFD_RELOC_PPC_B16: r = R_PPC64_REL14; |
5bd4f169 | 1924 | break; |
411e1bfb | 1925 | case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC64_REL14_BRTAKEN; |
5bd4f169 | 1926 | break; |
411e1bfb | 1927 | case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC64_REL14_BRNTAKEN; |
5bd4f169 | 1928 | break; |
411e1bfb | 1929 | case BFD_RELOC_16_GOTOFF: r = R_PPC64_GOT16; |
5bd4f169 | 1930 | break; |
411e1bfb | 1931 | case BFD_RELOC_LO16_GOTOFF: r = R_PPC64_GOT16_LO; |
5bd4f169 | 1932 | break; |
411e1bfb | 1933 | case BFD_RELOC_HI16_GOTOFF: r = R_PPC64_GOT16_HI; |
5bd4f169 | 1934 | break; |
411e1bfb | 1935 | case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC64_GOT16_HA; |
5bd4f169 | 1936 | break; |
411e1bfb | 1937 | case BFD_RELOC_PPC_COPY: r = R_PPC64_COPY; |
5bd4f169 | 1938 | break; |
411e1bfb | 1939 | case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC64_GLOB_DAT; |
5bd4f169 | 1940 | break; |
411e1bfb | 1941 | case BFD_RELOC_32_PCREL: r = R_PPC64_REL32; |
5bd4f169 | 1942 | break; |
411e1bfb | 1943 | case BFD_RELOC_32_PLTOFF: r = R_PPC64_PLT32; |
5bd4f169 | 1944 | break; |
411e1bfb | 1945 | case BFD_RELOC_32_PLT_PCREL: r = R_PPC64_PLTREL32; |
5bd4f169 | 1946 | break; |
411e1bfb | 1947 | case BFD_RELOC_LO16_PLTOFF: r = R_PPC64_PLT16_LO; |
5bd4f169 | 1948 | break; |
411e1bfb | 1949 | case BFD_RELOC_HI16_PLTOFF: r = R_PPC64_PLT16_HI; |
5bd4f169 | 1950 | break; |
411e1bfb | 1951 | case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC64_PLT16_HA; |
5bd4f169 | 1952 | break; |
411e1bfb | 1953 | case BFD_RELOC_16_BASEREL: r = R_PPC64_SECTOFF; |
5bd4f169 | 1954 | break; |
411e1bfb | 1955 | case BFD_RELOC_LO16_BASEREL: r = R_PPC64_SECTOFF_LO; |
5bd4f169 | 1956 | break; |
411e1bfb | 1957 | case BFD_RELOC_HI16_BASEREL: r = R_PPC64_SECTOFF_HI; |
5bd4f169 | 1958 | break; |
411e1bfb | 1959 | case BFD_RELOC_HI16_S_BASEREL: r = R_PPC64_SECTOFF_HA; |
5bd4f169 | 1960 | break; |
411e1bfb | 1961 | case BFD_RELOC_CTOR: r = R_PPC64_ADDR64; |
5bd4f169 | 1962 | break; |
411e1bfb | 1963 | case BFD_RELOC_64: r = R_PPC64_ADDR64; |
5bd4f169 | 1964 | break; |
411e1bfb | 1965 | case BFD_RELOC_PPC64_HIGHER: r = R_PPC64_ADDR16_HIGHER; |
5bd4f169 | 1966 | break; |
411e1bfb | 1967 | case BFD_RELOC_PPC64_HIGHER_S: r = R_PPC64_ADDR16_HIGHERA; |
5bd4f169 | 1968 | break; |
411e1bfb | 1969 | case BFD_RELOC_PPC64_HIGHEST: r = R_PPC64_ADDR16_HIGHEST; |
5bd4f169 | 1970 | break; |
411e1bfb | 1971 | case BFD_RELOC_PPC64_HIGHEST_S: r = R_PPC64_ADDR16_HIGHESTA; |
5bd4f169 | 1972 | break; |
411e1bfb | 1973 | case BFD_RELOC_64_PCREL: r = R_PPC64_REL64; |
5bd4f169 | 1974 | break; |
411e1bfb | 1975 | case BFD_RELOC_64_PLTOFF: r = R_PPC64_PLT64; |
5bd4f169 | 1976 | break; |
411e1bfb | 1977 | case BFD_RELOC_64_PLT_PCREL: r = R_PPC64_PLTREL64; |
5bd4f169 | 1978 | break; |
411e1bfb | 1979 | case BFD_RELOC_PPC_TOC16: r = R_PPC64_TOC16; |
5bd4f169 | 1980 | break; |
411e1bfb | 1981 | case BFD_RELOC_PPC64_TOC16_LO: r = R_PPC64_TOC16_LO; |
5bd4f169 | 1982 | break; |
411e1bfb | 1983 | case BFD_RELOC_PPC64_TOC16_HI: r = R_PPC64_TOC16_HI; |
5bd4f169 | 1984 | break; |
411e1bfb | 1985 | case BFD_RELOC_PPC64_TOC16_HA: r = R_PPC64_TOC16_HA; |
5bd4f169 | 1986 | break; |
411e1bfb | 1987 | case BFD_RELOC_PPC64_TOC: r = R_PPC64_TOC; |
5bd4f169 | 1988 | break; |
411e1bfb | 1989 | case BFD_RELOC_PPC64_PLTGOT16: r = R_PPC64_PLTGOT16; |
5bd4f169 | 1990 | break; |
411e1bfb | 1991 | case BFD_RELOC_PPC64_PLTGOT16_LO: r = R_PPC64_PLTGOT16_LO; |
5bd4f169 | 1992 | break; |
411e1bfb | 1993 | case BFD_RELOC_PPC64_PLTGOT16_HI: r = R_PPC64_PLTGOT16_HI; |
5bd4f169 | 1994 | break; |
411e1bfb | 1995 | case BFD_RELOC_PPC64_PLTGOT16_HA: r = R_PPC64_PLTGOT16_HA; |
5bd4f169 | 1996 | break; |
411e1bfb | 1997 | case BFD_RELOC_PPC64_ADDR16_DS: r = R_PPC64_ADDR16_DS; |
5bd4f169 | 1998 | break; |
411e1bfb | 1999 | case BFD_RELOC_PPC64_ADDR16_LO_DS: r = R_PPC64_ADDR16_LO_DS; |
5bd4f169 | 2000 | break; |
411e1bfb | 2001 | case BFD_RELOC_PPC64_GOT16_DS: r = R_PPC64_GOT16_DS; |
5bd4f169 | 2002 | break; |
411e1bfb | 2003 | case BFD_RELOC_PPC64_GOT16_LO_DS: r = R_PPC64_GOT16_LO_DS; |
5bd4f169 | 2004 | break; |
411e1bfb | 2005 | case BFD_RELOC_PPC64_PLT16_LO_DS: r = R_PPC64_PLT16_LO_DS; |
5bd4f169 | 2006 | break; |
411e1bfb | 2007 | case BFD_RELOC_PPC64_SECTOFF_DS: r = R_PPC64_SECTOFF_DS; |
5bd4f169 | 2008 | break; |
411e1bfb | 2009 | case BFD_RELOC_PPC64_SECTOFF_LO_DS: r = R_PPC64_SECTOFF_LO_DS; |
5bd4f169 | 2010 | break; |
411e1bfb | 2011 | case BFD_RELOC_PPC64_TOC16_DS: r = R_PPC64_TOC16_DS; |
5bd4f169 | 2012 | break; |
411e1bfb | 2013 | case BFD_RELOC_PPC64_TOC16_LO_DS: r = R_PPC64_TOC16_LO_DS; |
5bd4f169 | 2014 | break; |
411e1bfb | 2015 | case BFD_RELOC_PPC64_PLTGOT16_DS: r = R_PPC64_PLTGOT16_DS; |
5bd4f169 | 2016 | break; |
411e1bfb | 2017 | case BFD_RELOC_PPC64_PLTGOT16_LO_DS: r = R_PPC64_PLTGOT16_LO_DS; |
5bd4f169 | 2018 | break; |
411e1bfb | 2019 | case BFD_RELOC_PPC_TLS: r = R_PPC64_TLS; |
5bd4f169 | 2020 | break; |
411e1bfb | 2021 | case BFD_RELOC_PPC_DTPMOD: r = R_PPC64_DTPMOD64; |
5bd4f169 | 2022 | break; |
411e1bfb | 2023 | case BFD_RELOC_PPC_TPREL16: r = R_PPC64_TPREL16; |
5bd4f169 | 2024 | break; |
411e1bfb | 2025 | case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC64_TPREL16_LO; |
5bd4f169 | 2026 | break; |
411e1bfb | 2027 | case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC64_TPREL16_HI; |
5bd4f169 | 2028 | break; |
411e1bfb | 2029 | case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC64_TPREL16_HA; |
5bd4f169 | 2030 | break; |
411e1bfb | 2031 | case BFD_RELOC_PPC_TPREL: r = R_PPC64_TPREL64; |
5bd4f169 | 2032 | break; |
411e1bfb AM |
2033 | case BFD_RELOC_PPC_DTPREL16: r = R_PPC64_DTPREL16; |
2034 | break; | |
2035 | case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC64_DTPREL16_LO; | |
2036 | break; | |
2037 | case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC64_DTPREL16_HI; | |
2038 | break; | |
2039 | case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC64_DTPREL16_HA; | |
2040 | break; | |
2041 | case BFD_RELOC_PPC_DTPREL: r = R_PPC64_DTPREL64; | |
2042 | break; | |
2043 | case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC64_GOT_TLSGD16; | |
2044 | break; | |
2045 | case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC64_GOT_TLSGD16_LO; | |
2046 | break; | |
2047 | case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC64_GOT_TLSGD16_HI; | |
2048 | break; | |
2049 | case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC64_GOT_TLSGD16_HA; | |
2050 | break; | |
2051 | case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC64_GOT_TLSLD16; | |
2052 | break; | |
2053 | case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC64_GOT_TLSLD16_LO; | |
2054 | break; | |
2055 | case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC64_GOT_TLSLD16_HI; | |
2056 | break; | |
2057 | case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC64_GOT_TLSLD16_HA; | |
2058 | break; | |
2059 | case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC64_GOT_TPREL16_DS; | |
2060 | break; | |
2061 | case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC64_GOT_TPREL16_LO_DS; | |
2062 | break; | |
2063 | case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC64_GOT_TPREL16_HI; | |
2064 | break; | |
2065 | case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC64_GOT_TPREL16_HA; | |
2066 | break; | |
2067 | case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC64_GOT_DTPREL16_DS; | |
2068 | break; | |
2069 | case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC64_GOT_DTPREL16_LO_DS; | |
2070 | break; | |
2071 | case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC64_GOT_DTPREL16_HI; | |
2072 | break; | |
2073 | case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC64_GOT_DTPREL16_HA; | |
2074 | break; | |
2075 | case BFD_RELOC_PPC64_TPREL16_DS: r = R_PPC64_TPREL16_DS; | |
2076 | break; | |
2077 | case BFD_RELOC_PPC64_TPREL16_LO_DS: r = R_PPC64_TPREL16_LO_DS; | |
2078 | break; | |
2079 | case BFD_RELOC_PPC64_TPREL16_HIGHER: r = R_PPC64_TPREL16_HIGHER; | |
2080 | break; | |
2081 | case BFD_RELOC_PPC64_TPREL16_HIGHERA: r = R_PPC64_TPREL16_HIGHERA; | |
2082 | break; | |
2083 | case BFD_RELOC_PPC64_TPREL16_HIGHEST: r = R_PPC64_TPREL16_HIGHEST; | |
2084 | break; | |
2085 | case BFD_RELOC_PPC64_TPREL16_HIGHESTA: r = R_PPC64_TPREL16_HIGHESTA; | |
2086 | break; | |
2087 | case BFD_RELOC_PPC64_DTPREL16_DS: r = R_PPC64_DTPREL16_DS; | |
2088 | break; | |
2089 | case BFD_RELOC_PPC64_DTPREL16_LO_DS: r = R_PPC64_DTPREL16_LO_DS; | |
2090 | break; | |
2091 | case BFD_RELOC_PPC64_DTPREL16_HIGHER: r = R_PPC64_DTPREL16_HIGHER; | |
2092 | break; | |
2093 | case BFD_RELOC_PPC64_DTPREL16_HIGHERA: r = R_PPC64_DTPREL16_HIGHERA; | |
2094 | break; | |
2095 | case BFD_RELOC_PPC64_DTPREL16_HIGHEST: r = R_PPC64_DTPREL16_HIGHEST; | |
2096 | break; | |
2097 | case BFD_RELOC_PPC64_DTPREL16_HIGHESTA: r = R_PPC64_DTPREL16_HIGHESTA; | |
2098 | break; | |
2099 | case BFD_RELOC_VTABLE_INHERIT: r = R_PPC64_GNU_VTINHERIT; | |
2100 | break; | |
2101 | case BFD_RELOC_VTABLE_ENTRY: r = R_PPC64_GNU_VTENTRY; | |
5bd4f169 AM |
2102 | break; |
2103 | } | |
2104 | ||
4ce794b7 | 2105 | return ppc64_elf_howto_table[r]; |
5bd4f169 AM |
2106 | }; |
2107 | ||
2108 | /* Set the howto pointer for a PowerPC ELF reloc. */ | |
2109 | ||
2110 | static void | |
4ce794b7 AM |
2111 | ppc64_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr, |
2112 | Elf_Internal_Rela *dst) | |
5bd4f169 | 2113 | { |
65f38f15 AM |
2114 | unsigned int type; |
2115 | ||
ef60b7ff | 2116 | /* Initialize howto table if needed. */ |
5bd4f169 | 2117 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) |
5bd4f169 AM |
2118 | ppc_howto_init (); |
2119 | ||
65f38f15 AM |
2120 | type = ELF64_R_TYPE (dst->r_info); |
2121 | BFD_ASSERT (type < (sizeof (ppc64_elf_howto_table) | |
2122 | / sizeof (ppc64_elf_howto_table[0]))); | |
2123 | cache_ptr->howto = ppc64_elf_howto_table[type]; | |
5bd4f169 AM |
2124 | } |
2125 | ||
04c9666a | 2126 | /* Handle the R_PPC64_ADDR16_HA and similar relocs. */ |
5bd4f169 AM |
2127 | |
2128 | static bfd_reloc_status_type | |
4ce794b7 AM |
2129 | ppc64_elf_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2130 | void *data, asection *input_section, | |
2131 | bfd *output_bfd, char **error_message) | |
5bd4f169 | 2132 | { |
805fc799 AM |
2133 | /* If this is a relocatable link (output_bfd test tells us), just |
2134 | call the generic function. Any adjustment will be done at final | |
2135 | link time. */ | |
2136 | if (output_bfd != NULL) | |
cedb70c5 | 2137 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2138 | input_section, output_bfd, error_message); |
2139 | ||
2140 | /* Adjust the addend for sign extension of the low 16 bits. | |
2141 | We won't actually be using the low 16 bits, so trashing them | |
2142 | doesn't matter. */ | |
2143 | reloc_entry->addend += 0x8000; | |
2144 | return bfd_reloc_continue; | |
2145 | } | |
5bd4f169 | 2146 | |
2441e016 AM |
2147 | static bfd_reloc_status_type |
2148 | ppc64_elf_branch_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, | |
2149 | void *data, asection *input_section, | |
2150 | bfd *output_bfd, char **error_message) | |
2151 | { | |
2152 | if (output_bfd != NULL) | |
2153 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, | |
2154 | input_section, output_bfd, error_message); | |
2155 | ||
699733f6 AM |
2156 | if (strcmp (symbol->section->name, ".opd") == 0 |
2157 | && (symbol->section->owner->flags & DYNAMIC) == 0) | |
2441e016 AM |
2158 | { |
2159 | bfd_vma dest = opd_entry_value (symbol->section, | |
2160 | symbol->value + reloc_entry->addend, | |
2161 | NULL, NULL); | |
2162 | if (dest != (bfd_vma) -1) | |
2163 | reloc_entry->addend = dest - (symbol->value | |
2164 | + symbol->section->output_section->vma | |
2165 | + symbol->section->output_offset); | |
2166 | } | |
2167 | return bfd_reloc_continue; | |
2168 | } | |
2169 | ||
805fc799 | 2170 | static bfd_reloc_status_type |
4ce794b7 AM |
2171 | ppc64_elf_brtaken_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2172 | void *data, asection *input_section, | |
2173 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2174 | { |
2175 | long insn; | |
04c9666a | 2176 | enum elf_ppc64_reloc_type r_type; |
805fc799 AM |
2177 | bfd_size_type octets; |
2178 | /* Disabled until we sort out how ld should choose 'y' vs 'at'. */ | |
b34976b6 | 2179 | bfd_boolean is_power4 = FALSE; |
805fc799 AM |
2180 | |
2181 | /* If this is a relocatable link (output_bfd test tells us), just | |
2182 | call the generic function. Any adjustment will be done at final | |
2183 | link time. */ | |
5bd4f169 | 2184 | if (output_bfd != NULL) |
cedb70c5 | 2185 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2186 | input_section, output_bfd, error_message); |
2187 | ||
2188 | octets = reloc_entry->address * bfd_octets_per_byte (abfd); | |
2189 | insn = bfd_get_32 (abfd, (bfd_byte *) data + octets); | |
2190 | insn &= ~(0x01 << 21); | |
4ce794b7 | 2191 | r_type = reloc_entry->howto->type; |
805fc799 AM |
2192 | if (r_type == R_PPC64_ADDR14_BRTAKEN |
2193 | || r_type == R_PPC64_REL14_BRTAKEN) | |
cedb70c5 | 2194 | insn |= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */ |
805fc799 AM |
2195 | |
2196 | if (is_power4) | |
5bd4f169 | 2197 | { |
805fc799 AM |
2198 | /* Set 'a' bit. This is 0b00010 in BO field for branch |
2199 | on CR(BI) insns (BO == 001at or 011at), and 0b01000 | |
2200 | for branch on CTR insns (BO == 1a00t or 1a01t). */ | |
2201 | if ((insn & (0x14 << 21)) == (0x04 << 21)) | |
2202 | insn |= 0x02 << 21; | |
2203 | else if ((insn & (0x14 << 21)) == (0x10 << 21)) | |
2204 | insn |= 0x08 << 21; | |
2205 | else | |
2441e016 | 2206 | goto out; |
5bd4f169 | 2207 | } |
805fc799 AM |
2208 | else |
2209 | { | |
2210 | bfd_vma target = 0; | |
2211 | bfd_vma from; | |
5bd4f169 | 2212 | |
805fc799 AM |
2213 | if (!bfd_is_com_section (symbol->section)) |
2214 | target = symbol->value; | |
2215 | target += symbol->section->output_section->vma; | |
2216 | target += symbol->section->output_offset; | |
2217 | target += reloc_entry->addend; | |
5bd4f169 | 2218 | |
805fc799 AM |
2219 | from = (reloc_entry->address |
2220 | + input_section->output_offset | |
2221 | + input_section->output_section->vma); | |
5bd4f169 | 2222 | |
805fc799 AM |
2223 | /* Invert 'y' bit if not the default. */ |
2224 | if ((bfd_signed_vma) (target - from) < 0) | |
2225 | insn ^= 0x01 << 21; | |
2226 | } | |
4ce794b7 | 2227 | bfd_put_32 (abfd, insn, (bfd_byte *) data + octets); |
2441e016 AM |
2228 | out: |
2229 | return ppc64_elf_branch_reloc (abfd, reloc_entry, symbol, data, | |
2230 | input_section, output_bfd, error_message); | |
805fc799 | 2231 | } |
5bd4f169 | 2232 | |
805fc799 | 2233 | static bfd_reloc_status_type |
4ce794b7 AM |
2234 | ppc64_elf_sectoff_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2235 | void *data, asection *input_section, | |
2236 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2237 | { |
2238 | /* If this is a relocatable link (output_bfd test tells us), just | |
2239 | call the generic function. Any adjustment will be done at final | |
2240 | link time. */ | |
2241 | if (output_bfd != NULL) | |
cedb70c5 | 2242 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 | 2243 | input_section, output_bfd, error_message); |
5bd4f169 | 2244 | |
805fc799 AM |
2245 | /* Subtract the symbol section base address. */ |
2246 | reloc_entry->addend -= symbol->section->output_section->vma; | |
5bd4f169 AM |
2247 | return bfd_reloc_continue; |
2248 | } | |
2249 | ||
805fc799 | 2250 | static bfd_reloc_status_type |
4ce794b7 AM |
2251 | ppc64_elf_sectoff_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2252 | void *data, asection *input_section, | |
2253 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2254 | { |
2255 | /* If this is a relocatable link (output_bfd test tells us), just | |
2256 | call the generic function. Any adjustment will be done at final | |
2257 | link time. */ | |
2258 | if (output_bfd != NULL) | |
cedb70c5 | 2259 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2260 | input_section, output_bfd, error_message); |
2261 | ||
2262 | /* Subtract the symbol section base address. */ | |
2263 | reloc_entry->addend -= symbol->section->output_section->vma; | |
2264 | ||
2265 | /* Adjust the addend for sign extension of the low 16 bits. */ | |
2266 | reloc_entry->addend += 0x8000; | |
2267 | return bfd_reloc_continue; | |
2268 | } | |
2269 | ||
2270 | static bfd_reloc_status_type | |
4ce794b7 AM |
2271 | ppc64_elf_toc_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2272 | void *data, asection *input_section, | |
2273 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2274 | { |
2275 | bfd_vma TOCstart; | |
2276 | ||
2277 | /* If this is a relocatable link (output_bfd test tells us), just | |
2278 | call the generic function. Any adjustment will be done at final | |
2279 | link time. */ | |
2280 | if (output_bfd != NULL) | |
cedb70c5 | 2281 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2282 | input_section, output_bfd, error_message); |
2283 | ||
2284 | TOCstart = _bfd_get_gp_value (input_section->output_section->owner); | |
2285 | if (TOCstart == 0) | |
2286 | TOCstart = ppc64_elf_toc (input_section->output_section->owner); | |
2287 | ||
2288 | /* Subtract the TOC base address. */ | |
2289 | reloc_entry->addend -= TOCstart + TOC_BASE_OFF; | |
2290 | return bfd_reloc_continue; | |
2291 | } | |
2292 | ||
2293 | static bfd_reloc_status_type | |
4ce794b7 AM |
2294 | ppc64_elf_toc_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2295 | void *data, asection *input_section, | |
2296 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2297 | { |
2298 | bfd_vma TOCstart; | |
2299 | ||
2300 | /* If this is a relocatable link (output_bfd test tells us), just | |
2301 | call the generic function. Any adjustment will be done at final | |
2302 | link time. */ | |
2303 | if (output_bfd != NULL) | |
cedb70c5 | 2304 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2305 | input_section, output_bfd, error_message); |
2306 | ||
2307 | TOCstart = _bfd_get_gp_value (input_section->output_section->owner); | |
2308 | if (TOCstart == 0) | |
2309 | TOCstart = ppc64_elf_toc (input_section->output_section->owner); | |
2310 | ||
2311 | /* Subtract the TOC base address. */ | |
2312 | reloc_entry->addend -= TOCstart + TOC_BASE_OFF; | |
2313 | ||
2314 | /* Adjust the addend for sign extension of the low 16 bits. */ | |
2315 | reloc_entry->addend += 0x8000; | |
2316 | return bfd_reloc_continue; | |
2317 | } | |
2318 | ||
2319 | static bfd_reloc_status_type | |
4ce794b7 AM |
2320 | ppc64_elf_toc64_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2321 | void *data, asection *input_section, | |
2322 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2323 | { |
2324 | bfd_vma TOCstart; | |
2325 | bfd_size_type octets; | |
2326 | ||
2327 | /* If this is a relocatable link (output_bfd test tells us), just | |
2328 | call the generic function. Any adjustment will be done at final | |
2329 | link time. */ | |
2330 | if (output_bfd != NULL) | |
cedb70c5 | 2331 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2332 | input_section, output_bfd, error_message); |
2333 | ||
2334 | TOCstart = _bfd_get_gp_value (input_section->output_section->owner); | |
2335 | if (TOCstart == 0) | |
2336 | TOCstart = ppc64_elf_toc (input_section->output_section->owner); | |
2337 | ||
2338 | octets = reloc_entry->address * bfd_octets_per_byte (abfd); | |
2339 | bfd_put_64 (abfd, TOCstart + TOC_BASE_OFF, (bfd_byte *) data + octets); | |
2340 | return bfd_reloc_ok; | |
2341 | } | |
2342 | ||
2343 | static bfd_reloc_status_type | |
4ce794b7 AM |
2344 | ppc64_elf_unhandled_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2345 | void *data, asection *input_section, | |
2346 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2347 | { |
2348 | /* If this is a relocatable link (output_bfd test tells us), just | |
2349 | call the generic function. Any adjustment will be done at final | |
2350 | link time. */ | |
2351 | if (output_bfd != NULL) | |
cedb70c5 | 2352 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2353 | input_section, output_bfd, error_message); |
2354 | ||
2355 | if (error_message != NULL) | |
2356 | { | |
2357 | static char buf[60]; | |
2358 | sprintf (buf, "generic linker can't handle %s", | |
2359 | reloc_entry->howto->name); | |
2360 | *error_message = buf; | |
2361 | } | |
2362 | return bfd_reloc_dangerous; | |
2363 | } | |
2364 | ||
e717da7e AM |
2365 | struct ppc64_elf_obj_tdata |
2366 | { | |
2367 | struct elf_obj_tdata elf; | |
2368 | ||
2369 | /* Shortcuts to dynamic linker sections. */ | |
2370 | asection *got; | |
2371 | asection *relgot; | |
2372 | ||
81688140 AM |
2373 | /* Used during garbage collection. We attach global symbols defined |
2374 | on removed .opd entries to this section so that the sym is removed. */ | |
2375 | asection *deleted_section; | |
2376 | ||
e717da7e AM |
2377 | /* TLS local dynamic got entry handling. Suppose for multiple GOT |
2378 | sections means we potentially need one of these for each input bfd. */ | |
2379 | union { | |
2380 | bfd_signed_vma refcount; | |
2381 | bfd_vma offset; | |
2382 | } tlsld_got; | |
2383 | }; | |
2384 | ||
2385 | #define ppc64_elf_tdata(bfd) \ | |
2386 | ((struct ppc64_elf_obj_tdata *) (bfd)->tdata.any) | |
2387 | ||
2388 | #define ppc64_tlsld_got(bfd) \ | |
2389 | (&ppc64_elf_tdata (bfd)->tlsld_got) | |
2390 | ||
2391 | /* Override the generic function because we store some extras. */ | |
2392 | ||
2393 | static bfd_boolean | |
2394 | ppc64_elf_mkobject (bfd *abfd) | |
2395 | { | |
2396 | bfd_size_type amt = sizeof (struct ppc64_elf_obj_tdata); | |
2397 | abfd->tdata.any = bfd_zalloc (abfd, amt); | |
2398 | if (abfd->tdata.any == NULL) | |
2399 | return FALSE; | |
2400 | return TRUE; | |
2401 | } | |
2402 | ||
feee612b AM |
2403 | /* Fix bad default arch selected for a 64 bit input bfd when the |
2404 | default is 32 bit. */ | |
2405 | ||
b34976b6 | 2406 | static bfd_boolean |
4ce794b7 | 2407 | ppc64_elf_object_p (bfd *abfd) |
feee612b AM |
2408 | { |
2409 | if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 32) | |
2410 | { | |
2411 | Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd); | |
2412 | ||
2413 | if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS64) | |
2414 | { | |
2415 | /* Relies on arch after 32 bit default being 64 bit default. */ | |
2416 | abfd->arch_info = abfd->arch_info->next; | |
2417 | BFD_ASSERT (abfd->arch_info->bits_per_word == 64); | |
2418 | } | |
2419 | } | |
b34976b6 | 2420 | return TRUE; |
feee612b AM |
2421 | } |
2422 | ||
d37c89e5 AM |
2423 | /* Support for core dump NOTE sections. */ |
2424 | ||
2425 | static bfd_boolean | |
2426 | ppc64_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) | |
2427 | { | |
eea6121a | 2428 | size_t offset, size; |
d37c89e5 AM |
2429 | |
2430 | if (note->descsz != 504) | |
2431 | return FALSE; | |
2432 | ||
2433 | /* pr_cursig */ | |
2434 | elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12); | |
2435 | ||
2436 | /* pr_pid */ | |
2437 | elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 32); | |
2438 | ||
2439 | /* pr_reg */ | |
2440 | offset = 112; | |
eea6121a | 2441 | size = 384; |
d37c89e5 AM |
2442 | |
2443 | /* Make a ".reg/999" section. */ | |
2444 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", | |
eea6121a | 2445 | size, note->descpos + offset); |
d37c89e5 AM |
2446 | } |
2447 | ||
2448 | static bfd_boolean | |
2449 | ppc64_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) | |
2450 | { | |
2451 | if (note->descsz != 136) | |
2452 | return FALSE; | |
2453 | ||
2454 | elf_tdata (abfd)->core_program | |
2455 | = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16); | |
2456 | elf_tdata (abfd)->core_command | |
2457 | = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80); | |
2458 | ||
2459 | return TRUE; | |
2460 | } | |
2461 | ||
5bd4f169 AM |
2462 | /* Merge backend specific data from an object file to the output |
2463 | object file when linking. */ | |
2f6d9989 | 2464 | |
b34976b6 | 2465 | static bfd_boolean |
4ce794b7 | 2466 | ppc64_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd) |
5bd4f169 | 2467 | { |
5bd4f169 AM |
2468 | /* Check if we have the same endianess. */ |
2469 | if (ibfd->xvec->byteorder != obfd->xvec->byteorder | |
87e226ce | 2470 | && ibfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN |
5bd4f169 AM |
2471 | && obfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN) |
2472 | { | |
2473 | const char *msg; | |
2474 | ||
2475 | if (bfd_big_endian (ibfd)) | |
d003868e | 2476 | msg = _("%B: compiled for a big endian system " |
4ce794b7 | 2477 | "and target is little endian"); |
5bd4f169 | 2478 | else |
d003868e | 2479 | msg = _("%B: compiled for a little endian system " |
4ce794b7 | 2480 | "and target is big endian"); |
5bd4f169 | 2481 | |
d003868e | 2482 | (*_bfd_error_handler) (msg, ibfd); |
5bd4f169 AM |
2483 | |
2484 | bfd_set_error (bfd_error_wrong_format); | |
b34976b6 | 2485 | return FALSE; |
5bd4f169 AM |
2486 | } |
2487 | ||
b34976b6 | 2488 | return TRUE; |
5bd4f169 | 2489 | } |
f0abc2a1 | 2490 | |
5d35169e AM |
2491 | /* Add extra PPC sections. */ |
2492 | ||
2493 | static struct bfd_elf_special_section const ppc64_elf_special_sections[]= | |
2494 | { | |
7dcb9820 AM |
2495 | { ".sdata", 6, -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, |
2496 | { ".sbss", 5, -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, | |
2497 | { ".plt", 4, 0, SHT_NOBITS, 0 }, | |
2498 | { ".toc", 4, 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
2499 | { ".toc1", 5, 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
2500 | { ".tocbss", 7, 0, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, | |
2501 | { NULL, 0, 0, 0, 0 } | |
5d35169e AM |
2502 | }; |
2503 | ||
f0abc2a1 AM |
2504 | struct _ppc64_elf_section_data |
2505 | { | |
2506 | struct bfd_elf_section_data elf; | |
411e1bfb AM |
2507 | |
2508 | /* An array with one entry for each opd function descriptor. */ | |
f0abc2a1 AM |
2509 | union |
2510 | { | |
411e1bfb | 2511 | /* Points to the function code section for local opd entries. */ |
f0abc2a1 | 2512 | asection **func_sec; |
411e1bfb | 2513 | /* After editing .opd, adjust references to opd local syms. */ |
f0abc2a1 AM |
2514 | long *adjust; |
2515 | } opd; | |
411e1bfb AM |
2516 | |
2517 | /* An array for toc sections, indexed by offset/8. | |
2518 | Specifies the relocation symbol index used at a given toc offset. */ | |
2519 | unsigned *t_symndx; | |
f0abc2a1 AM |
2520 | }; |
2521 | ||
2522 | #define ppc64_elf_section_data(sec) \ | |
411e1bfb | 2523 | ((struct _ppc64_elf_section_data *) elf_section_data (sec)) |
f0abc2a1 AM |
2524 | |
2525 | static bfd_boolean | |
4ce794b7 | 2526 | ppc64_elf_new_section_hook (bfd *abfd, asection *sec) |
f0abc2a1 AM |
2527 | { |
2528 | struct _ppc64_elf_section_data *sdata; | |
2529 | bfd_size_type amt = sizeof (*sdata); | |
2530 | ||
4ce794b7 | 2531 | sdata = bfd_zalloc (abfd, amt); |
f0abc2a1 AM |
2532 | if (sdata == NULL) |
2533 | return FALSE; | |
4ce794b7 | 2534 | sec->used_by_bfd = sdata; |
f0abc2a1 AM |
2535 | |
2536 | return _bfd_elf_new_section_hook (abfd, sec); | |
2537 | } | |
4025353c AM |
2538 | |
2539 | static void * | |
2540 | get_opd_info (asection * sec) | |
2541 | { | |
2542 | if (sec != NULL | |
2543 | && ppc64_elf_section_data (sec) != NULL | |
2544 | && ppc64_elf_section_data (sec)->opd.adjust != NULL) | |
2545 | return ppc64_elf_section_data (sec)->opd.adjust; | |
2546 | return NULL; | |
2547 | } | |
90e3cdf2 JJ |
2548 | \f |
2549 | /* Parameters for the qsort hook. */ | |
2550 | static asection *synthetic_opd; | |
2551 | static bfd_boolean synthetic_relocatable; | |
2552 | ||
699733f6 | 2553 | /* qsort comparison function for ppc64_elf_get_synthetic_symtab. */ |
90e3cdf2 JJ |
2554 | |
2555 | static int | |
2556 | compare_symbols (const void *ap, const void *bp) | |
2557 | { | |
2558 | const asymbol *a = * (const asymbol **) ap; | |
2559 | const asymbol *b = * (const asymbol **) bp; | |
2560 | ||
699733f6 AM |
2561 | /* Section symbols first. */ |
2562 | if ((a->flags & BSF_SECTION_SYM) && !(b->flags & BSF_SECTION_SYM)) | |
90e3cdf2 | 2563 | return -1; |
699733f6 | 2564 | if (!(a->flags & BSF_SECTION_SYM) && (b->flags & BSF_SECTION_SYM)) |
90e3cdf2 JJ |
2565 | return 1; |
2566 | ||
699733f6 | 2567 | /* then .opd symbols. */ |
90e3cdf2 JJ |
2568 | if (a->section == synthetic_opd && b->section != synthetic_opd) |
2569 | return -1; | |
2570 | if (a->section != synthetic_opd && b->section == synthetic_opd) | |
2571 | return 1; | |
2572 | ||
699733f6 | 2573 | /* then other code symbols. */ |
90e3cdf2 JJ |
2574 | if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) |
2575 | == (SEC_CODE | SEC_ALLOC) | |
2576 | && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
2577 | != (SEC_CODE | SEC_ALLOC)) | |
2578 | return -1; | |
2579 | ||
2580 | if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
2581 | != (SEC_CODE | SEC_ALLOC) | |
2582 | && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
2583 | == (SEC_CODE | SEC_ALLOC)) | |
2584 | return 1; | |
2585 | ||
2586 | if (synthetic_relocatable) | |
2587 | { | |
2588 | if (a->section->id < b->section->id) | |
2589 | return -1; | |
2590 | ||
2591 | if (a->section->id > b->section->id) | |
2592 | return 1; | |
2593 | } | |
2594 | ||
2595 | if (a->value + a->section->vma < b->value + b->section->vma) | |
2596 | return -1; | |
2597 | ||
2598 | if (a->value + a->section->vma > b->value + b->section->vma) | |
2599 | return 1; | |
2600 | ||
2601 | return 0; | |
2602 | } | |
2603 | ||
699733f6 | 2604 | /* Search SYMS for a symbol of the given VALUE. */ |
90e3cdf2 | 2605 | |
699733f6 AM |
2606 | static asymbol * |
2607 | sym_exists_at (asymbol **syms, long lo, long hi, int id, bfd_vma value) | |
90e3cdf2 | 2608 | { |
699733f6 | 2609 | long mid; |
90e3cdf2 | 2610 | |
699733f6 AM |
2611 | if (id == -1) |
2612 | { | |
2613 | while (lo < hi) | |
2614 | { | |
2615 | mid = (lo + hi) >> 1; | |
2616 | if (syms[mid]->value + syms[mid]->section->vma < value) | |
2617 | lo = mid + 1; | |
2618 | else if (syms[mid]->value + syms[mid]->section->vma > value) | |
2619 | hi = mid; | |
2620 | else | |
2621 | return syms[mid]; | |
2622 | } | |
2623 | } | |
2624 | else | |
2625 | { | |
2626 | while (lo < hi) | |
2627 | { | |
2628 | mid = (lo + hi) >> 1; | |
2629 | if (syms[mid]->section->id < id) | |
2630 | lo = mid + 1; | |
2631 | else if (syms[mid]->section->id > id) | |
2632 | hi = mid; | |
2633 | else if (syms[mid]->value < value) | |
2634 | lo = mid + 1; | |
2635 | else if (syms[mid]->value > value) | |
2636 | hi = mid; | |
2637 | else | |
2638 | return syms[mid]; | |
2639 | } | |
2640 | } | |
2641 | return NULL; | |
90e3cdf2 JJ |
2642 | } |
2643 | ||
699733f6 AM |
2644 | /* Create synthetic symbols, effectively restoring "dot-symbol" function |
2645 | entry syms. */ | |
90e3cdf2 JJ |
2646 | |
2647 | static long | |
a7535cf3 AM |
2648 | ppc64_elf_get_synthetic_symtab (bfd *abfd, |
2649 | long static_count, asymbol **static_syms, | |
2650 | long dyn_count, asymbol **dyn_syms, | |
c9727e01 | 2651 | asymbol **ret) |
90e3cdf2 JJ |
2652 | { |
2653 | asymbol *s; | |
699733f6 AM |
2654 | long i; |
2655 | long count; | |
90e3cdf2 | 2656 | char *names; |
a7535cf3 | 2657 | long symcount, codesecsym, codesecsymend, secsymend, opdsymend; |
699733f6 | 2658 | asection *opd; |
90e3cdf2 | 2659 | bfd_boolean relocatable = (abfd->flags & (EXEC_P | DYNAMIC)) == 0; |
a7535cf3 | 2660 | asymbol **syms; |
90e3cdf2 JJ |
2661 | |
2662 | *ret = NULL; | |
2663 | ||
2664 | opd = bfd_get_section_by_name (abfd, ".opd"); | |
2665 | if (opd == NULL) | |
2666 | return 0; | |
2667 | ||
a7535cf3 | 2668 | symcount = static_count; |
c9727e01 | 2669 | if (!relocatable) |
a7535cf3 | 2670 | symcount += dyn_count; |
90e3cdf2 | 2671 | if (symcount == 0) |
c9727e01 | 2672 | return 0; |
90e3cdf2 | 2673 | |
a7535cf3 AM |
2674 | syms = bfd_malloc ((symcount + 1) * sizeof (*syms)); |
2675 | if (syms == NULL) | |
2676 | return 0; | |
2677 | ||
2678 | if (!relocatable && static_count != 0 && dyn_count != 0) | |
2679 | { | |
2680 | /* Use both symbol tables. */ | |
2681 | memcpy (syms, static_syms, static_count * sizeof (*syms)); | |
2682 | memcpy (syms + static_count, dyn_syms, (dyn_count + 1) * sizeof (*syms)); | |
2683 | } | |
2684 | else if (!relocatable && static_count == 0) | |
2685 | memcpy (syms, dyn_syms, (symcount + 1) * sizeof (*syms)); | |
2686 | else | |
2687 | memcpy (syms, static_syms, (symcount + 1) * sizeof (*syms)); | |
2688 | ||
90e3cdf2 JJ |
2689 | synthetic_opd = opd; |
2690 | synthetic_relocatable = relocatable; | |
595da8c5 | 2691 | qsort (syms, symcount, sizeof (*syms), compare_symbols); |
90e3cdf2 | 2692 | |
c9727e01 AM |
2693 | if (!relocatable && symcount > 1) |
2694 | { | |
2695 | long j; | |
2696 | /* Trim duplicate syms, since we may have merged the normal and | |
2697 | dynamic symbols. Actually, we only care about syms that have | |
2698 | different values, so trim any with the same value. */ | |
2699 | for (i = 1, j = 1; i < symcount; ++i) | |
2700 | if (syms[i - 1]->value + syms[i - 1]->section->vma | |
2701 | != syms[i]->value + syms[i]->section->vma) | |
2702 | syms[j++] = syms[i]; | |
2703 | symcount = j; | |
2704 | } | |
2705 | ||
699733f6 AM |
2706 | i = 0; |
2707 | if (syms[i]->section == opd) | |
2708 | ++i; | |
2709 | codesecsym = i; | |
90e3cdf2 | 2710 | |
699733f6 AM |
2711 | for (; i < symcount; ++i) |
2712 | if (((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
2713 | != (SEC_CODE | SEC_ALLOC)) | |
2714 | || (syms[i]->flags & BSF_SECTION_SYM) == 0) | |
2715 | break; | |
2716 | codesecsymend = i; | |
90e3cdf2 | 2717 | |
699733f6 AM |
2718 | for (; i < symcount; ++i) |
2719 | if ((syms[i]->flags & BSF_SECTION_SYM) == 0) | |
2720 | break; | |
2721 | secsymend = i; | |
90e3cdf2 | 2722 | |
699733f6 AM |
2723 | for (; i < symcount; ++i) |
2724 | if (syms[i]->section != opd) | |
2725 | break; | |
2726 | opdsymend = i; | |
90e3cdf2 | 2727 | |
699733f6 AM |
2728 | for (; i < symcount; ++i) |
2729 | if ((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
2730 | != (SEC_CODE | SEC_ALLOC)) | |
2731 | break; | |
2732 | symcount = i; | |
2733 | ||
c9727e01 | 2734 | count = 0; |
699733f6 | 2735 | if (opdsymend == secsymend) |
c9727e01 | 2736 | goto done; |
90e3cdf2 | 2737 | |
699733f6 | 2738 | if (relocatable) |
90e3cdf2 | 2739 | { |
699733f6 AM |
2740 | bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean); |
2741 | arelent *r; | |
2742 | size_t size; | |
2743 | long relcount; | |
90e3cdf2 | 2744 | |
699733f6 | 2745 | slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table; |
90e3cdf2 JJ |
2746 | relcount = (opd->flags & SEC_RELOC) ? opd->reloc_count : 0; |
2747 | ||
2748 | if (! relcount | |
595da8c5 | 2749 | || ! (*slurp_relocs) (abfd, opd, static_syms, FALSE)) |
c9727e01 | 2750 | goto done; |
90e3cdf2 | 2751 | |
699733f6 | 2752 | size = 0; |
595da8c5 | 2753 | for (i = secsymend, r = opd->relocation; i < opdsymend; ++i) |
699733f6 AM |
2754 | { |
2755 | asymbol *sym; | |
90e3cdf2 | 2756 | |
595da8c5 | 2757 | while (r < opd->relocation + relcount |
699733f6 AM |
2758 | && r->address < syms[i]->value + opd->vma) |
2759 | ++r; | |
90e3cdf2 | 2760 | |
595da8c5 | 2761 | if (r == opd->relocation + relcount) |
699733f6 | 2762 | break; |
90e3cdf2 | 2763 | |
699733f6 AM |
2764 | if (r->address != syms[i]->value + opd->vma) |
2765 | continue; | |
90e3cdf2 | 2766 | |
699733f6 AM |
2767 | if (r->howto->type != R_PPC64_ADDR64) |
2768 | continue; | |
90e3cdf2 | 2769 | |
699733f6 AM |
2770 | sym = *r->sym_ptr_ptr; |
2771 | if (!sym_exists_at (syms, opdsymend, symcount, | |
2772 | sym->section->id, sym->value + r->addend)) | |
2773 | { | |
2774 | ++count; | |
2775 | size += sizeof (asymbol); | |
2776 | size += strlen (syms[i]->name) + 2; | |
2777 | } | |
2778 | } | |
90e3cdf2 | 2779 | |
699733f6 AM |
2780 | s = *ret = bfd_malloc (size); |
2781 | if (s == NULL) | |
2782 | { | |
c9727e01 AM |
2783 | count = 0; |
2784 | goto done; | |
699733f6 | 2785 | } |
90e3cdf2 | 2786 | |
699733f6 | 2787 | names = (char *) (s + count); |
90e3cdf2 | 2788 | |
595da8c5 | 2789 | for (i = secsymend, r = opd->relocation; i < opdsymend; ++i) |
90e3cdf2 | 2790 | { |
699733f6 | 2791 | asymbol *sym; |
90e3cdf2 | 2792 | |
595da8c5 | 2793 | while (r < opd->relocation + relcount |
699733f6 AM |
2794 | && r->address < syms[i]->value + opd->vma) |
2795 | ++r; | |
90e3cdf2 | 2796 | |
595da8c5 | 2797 | if (r == opd->relocation + relcount) |
699733f6 AM |
2798 | break; |
2799 | ||
2800 | if (r->address != syms[i]->value + opd->vma) | |
2801 | continue; | |
2802 | ||
2803 | if (r->howto->type != R_PPC64_ADDR64) | |
2804 | continue; | |
90e3cdf2 | 2805 | |
699733f6 AM |
2806 | sym = *r->sym_ptr_ptr; |
2807 | if (!sym_exists_at (syms, opdsymend, symcount, | |
2808 | sym->section->id, sym->value + r->addend)) | |
2809 | { | |
2810 | size_t len; | |
2811 | ||
2812 | *s = *syms[i]; | |
2813 | s->section = sym->section; | |
2814 | s->value = sym->value + r->addend; | |
2815 | s->name = names; | |
2816 | *names++ = '.'; | |
2817 | len = strlen (syms[i]->name); | |
2818 | memcpy (names, syms[i]->name, len + 1); | |
2819 | names += len + 1; | |
2820 | s++; | |
2821 | } | |
2822 | } | |
2823 | } | |
2824 | else | |
90e3cdf2 | 2825 | { |
699733f6 AM |
2826 | bfd_byte *contents; |
2827 | size_t size; | |
90e3cdf2 | 2828 | |
699733f6 AM |
2829 | if (!bfd_malloc_and_get_section (abfd, opd, &contents)) |
2830 | { | |
2831 | if (contents) | |
c9727e01 AM |
2832 | { |
2833 | free_contents_and_exit: | |
2834 | free (contents); | |
2835 | } | |
2836 | goto done; | |
699733f6 | 2837 | } |
90e3cdf2 | 2838 | |
699733f6 AM |
2839 | size = 0; |
2840 | for (i = secsymend; i < opdsymend; ++i) | |
2841 | { | |
2842 | bfd_vma ent; | |
90e3cdf2 | 2843 | |
699733f6 AM |
2844 | ent = bfd_get_64 (abfd, contents + syms[i]->value); |
2845 | if (!sym_exists_at (syms, opdsymend, symcount, -1, ent)) | |
2846 | { | |
2847 | ++count; | |
2848 | size += sizeof (asymbol); | |
2849 | size += strlen (syms[i]->name) + 2; | |
2850 | } | |
2851 | } | |
90e3cdf2 | 2852 | |
699733f6 AM |
2853 | s = *ret = bfd_malloc (size); |
2854 | if (s == NULL) | |
2855 | { | |
c9727e01 AM |
2856 | count = 0; |
2857 | goto free_contents_and_exit; | |
699733f6 | 2858 | } |
90e3cdf2 | 2859 | |
699733f6 | 2860 | names = (char *) (s + count); |
90e3cdf2 | 2861 | |
699733f6 | 2862 | for (i = secsymend; i < opdsymend; ++i) |
90e3cdf2 | 2863 | { |
699733f6 | 2864 | bfd_vma ent; |
90e3cdf2 | 2865 | |
699733f6 AM |
2866 | ent = bfd_get_64 (abfd, contents + syms[i]->value); |
2867 | if (!sym_exists_at (syms, opdsymend, symcount, -1, ent)) | |
90e3cdf2 | 2868 | { |
c9727e01 | 2869 | long lo, hi; |
699733f6 | 2870 | size_t len; |
c9727e01 | 2871 | asection *sec = abfd->sections; |
90e3cdf2 | 2872 | |
699733f6 AM |
2873 | *s = *syms[i]; |
2874 | lo = codesecsym; | |
2875 | hi = codesecsymend; | |
2876 | while (lo < hi) | |
2877 | { | |
c9727e01 | 2878 | long mid = (lo + hi) >> 1; |
699733f6 AM |
2879 | if (syms[mid]->section->vma < ent) |
2880 | lo = mid + 1; | |
2881 | else if (syms[mid]->section->vma > ent) | |
2882 | hi = mid; | |
2883 | else | |
c9727e01 AM |
2884 | { |
2885 | sec = syms[mid]->section; | |
2886 | break; | |
2887 | } | |
699733f6 AM |
2888 | } |
2889 | ||
c9727e01 | 2890 | if (lo >= hi && lo > codesecsym) |
699733f6 | 2891 | sec = syms[lo - 1]->section; |
699733f6 AM |
2892 | |
2893 | for (; sec != NULL; sec = sec->next) | |
2894 | { | |
2895 | if (sec->vma > ent) | |
2896 | break; | |
2897 | if ((sec->flags & SEC_ALLOC) == 0 | |
2898 | || (sec->flags & SEC_LOAD) == 0) | |
2899 | break; | |
2900 | if ((sec->flags & SEC_CODE) != 0) | |
2901 | s->section = sec; | |
2902 | } | |
2903 | s->value = ent - s->section->vma; | |
2904 | s->name = names; | |
2905 | *names++ = '.'; | |
2906 | len = strlen (syms[i]->name); | |
2907 | memcpy (names, syms[i]->name, len + 1); | |
2908 | names += len + 1; | |
2909 | s++; | |
90e3cdf2 | 2910 | } |
90e3cdf2 | 2911 | } |
699733f6 | 2912 | free (contents); |
90e3cdf2 JJ |
2913 | } |
2914 | ||
c9727e01 | 2915 | done: |
a7535cf3 | 2916 | free (syms); |
90e3cdf2 JJ |
2917 | return count; |
2918 | } | |
5bd4f169 | 2919 | \f |
65f38f15 AM |
2920 | /* The following functions are specific to the ELF linker, while |
2921 | functions above are used generally. Those named ppc64_elf_* are | |
2922 | called by the main ELF linker code. They appear in this file more | |
2923 | or less in the order in which they are called. eg. | |
2924 | ppc64_elf_check_relocs is called early in the link process, | |
2925 | ppc64_elf_finish_dynamic_sections is one of the last functions | |
e86ce104 AM |
2926 | called. |
2927 | ||
2928 | PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that | |
2929 | functions have both a function code symbol and a function descriptor | |
2930 | symbol. A call to foo in a relocatable object file looks like: | |
2931 | ||
2932 | . .text | |
2933 | . x: | |
2934 | . bl .foo | |
2935 | . nop | |
2936 | ||
2937 | The function definition in another object file might be: | |
2938 | ||
2939 | . .section .opd | |
2940 | . foo: .quad .foo | |
2941 | . .quad .TOC.@tocbase | |
2942 | . .quad 0 | |
2943 | . | |
2944 | . .text | |
2945 | . .foo: blr | |
2946 | ||
2947 | When the linker resolves the call during a static link, the branch | |
2948 | unsurprisingly just goes to .foo and the .opd information is unused. | |
2949 | If the function definition is in a shared library, things are a little | |
2950 | different: The call goes via a plt call stub, the opd information gets | |
2951 | copied to the plt, and the linker patches the nop. | |
2952 | ||
2953 | . x: | |
2954 | . bl .foo_stub | |
2955 | . ld 2,40(1) | |
2956 | . | |
2957 | . | |
2958 | . .foo_stub: | |
2959 | . addis 12,2,Lfoo@toc@ha # in practice, the call stub | |
411e1bfb | 2960 | . addi 12,12,Lfoo@toc@l # is slightly optimized, but |
e86ce104 AM |
2961 | . std 2,40(1) # this is the general idea |
2962 | . ld 11,0(12) | |
2963 | . ld 2,8(12) | |
2964 | . mtctr 11 | |
2965 | . ld 11,16(12) | |
2966 | . bctr | |
2967 | . | |
2968 | . .section .plt | |
2969 | . Lfoo: reloc (R_PPC64_JMP_SLOT, foo) | |
2970 | ||
2971 | The "reloc ()" notation is supposed to indicate that the linker emits | |
2972 | an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd | |
2973 | copying. | |
2974 | ||
2975 | What are the difficulties here? Well, firstly, the relocations | |
2976 | examined by the linker in check_relocs are against the function code | |
2977 | sym .foo, while the dynamic relocation in the plt is emitted against | |
2978 | the function descriptor symbol, foo. Somewhere along the line, we need | |
2979 | to carefully copy dynamic link information from one symbol to the other. | |
2980 | Secondly, the generic part of the elf linker will make .foo a dynamic | |
2981 | symbol as is normal for most other backends. We need foo dynamic | |
2982 | instead, at least for an application final link. However, when | |
2983 | creating a shared library containing foo, we need to have both symbols | |
2984 | dynamic so that references to .foo are satisfied during the early | |
2985 | stages of linking. Otherwise the linker might decide to pull in a | |
8387904d AM |
2986 | definition from some other object, eg. a static library. |
2987 | ||
2988 | Update: As of August 2004, we support a new convention. Function | |
2989 | calls may use the function descriptor symbol, ie. "bl foo". This | |
2990 | behaves exactly as "bl .foo". */ | |
65f38f15 AM |
2991 | |
2992 | /* The linker needs to keep track of the number of relocs that it | |
2993 | decides to copy as dynamic relocs in check_relocs for each symbol. | |
2994 | This is so that it can later discard them if they are found to be | |
2995 | unnecessary. We store the information in a field extending the | |
2996 | regular ELF linker hash table. */ | |
2997 | ||
2998 | struct ppc_dyn_relocs | |
2999 | { | |
3000 | struct ppc_dyn_relocs *next; | |
3001 | ||
3002 | /* The input section of the reloc. */ | |
3003 | asection *sec; | |
3004 | ||
3005 | /* Total number of relocs copied for the input section. */ | |
3006 | bfd_size_type count; | |
3007 | ||
3008 | /* Number of pc-relative relocs copied for the input section. */ | |
3009 | bfd_size_type pc_count; | |
3010 | }; | |
3011 | ||
411e1bfb AM |
3012 | /* Track GOT entries needed for a given symbol. We might need more |
3013 | than one got entry per symbol. */ | |
3014 | struct got_entry | |
3015 | { | |
3016 | struct got_entry *next; | |
3017 | ||
e7b938ca | 3018 | /* The symbol addend that we'll be placing in the GOT. */ |
411e1bfb AM |
3019 | bfd_vma addend; |
3020 | ||
e717da7e AM |
3021 | /* Unlike other ELF targets, we use separate GOT entries for the same |
3022 | symbol referenced from different input files. This is to support | |
3023 | automatic multiple TOC/GOT sections, where the TOC base can vary | |
3024 | from one input file to another. | |
3025 | ||
3026 | Point to the BFD owning this GOT entry. */ | |
3027 | bfd *owner; | |
3028 | ||
3029 | /* Zero for non-tls entries, or TLS_TLS and one of TLS_GD, TLS_LD, | |
3030 | TLS_TPREL or TLS_DTPREL for tls entries. */ | |
3031 | char tls_type; | |
3032 | ||
e7b938ca | 3033 | /* Reference count until size_dynamic_sections, GOT offset thereafter. */ |
411e1bfb AM |
3034 | union |
3035 | { | |
3036 | bfd_signed_vma refcount; | |
3037 | bfd_vma offset; | |
3038 | } got; | |
411e1bfb AM |
3039 | }; |
3040 | ||
3041 | /* The same for PLT. */ | |
3042 | struct plt_entry | |
3043 | { | |
3044 | struct plt_entry *next; | |
3045 | ||
3046 | bfd_vma addend; | |
3047 | ||
3048 | union | |
3049 | { | |
3050 | bfd_signed_vma refcount; | |
3051 | bfd_vma offset; | |
3052 | } plt; | |
3053 | }; | |
3054 | ||
65f38f15 | 3055 | /* Of those relocs that might be copied as dynamic relocs, this macro |
58ac9f71 AM |
3056 | selects those that must be copied when linking a shared library, |
3057 | even when the symbol is local. */ | |
65f38f15 | 3058 | |
411e1bfb | 3059 | #define MUST_BE_DYN_RELOC(RTYPE) \ |
805fc799 AM |
3060 | ((RTYPE) != R_PPC64_REL32 \ |
3061 | && (RTYPE) != R_PPC64_REL64 \ | |
04c9666a | 3062 | && (RTYPE) != R_PPC64_REL30) |
65f38f15 | 3063 | |
f4656909 AM |
3064 | /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid |
3065 | copying dynamic variables from a shared lib into an app's dynbss | |
3066 | section, and instead use a dynamic relocation to point into the | |
5d35169e AM |
3067 | shared lib. With code that gcc generates, it's vital that this be |
3068 | enabled; In the PowerPC64 ABI, the address of a function is actually | |
3069 | the address of a function descriptor, which resides in the .opd | |
3070 | section. gcc uses the descriptor directly rather than going via the | |
3071 | GOT as some other ABI's do, which means that initialized function | |
3072 | pointers must reference the descriptor. Thus, a function pointer | |
3073 | initialized to the address of a function in a shared library will | |
3074 | either require a copy reloc, or a dynamic reloc. Using a copy reloc | |
4cc11e76 | 3075 | redefines the function descriptor symbol to point to the copy. This |
5d35169e AM |
3076 | presents a problem as a plt entry for that function is also |
3077 | initialized from the function descriptor symbol and the copy reloc | |
3078 | may not be initialized first. */ | |
a23b6845 | 3079 | #define ELIMINATE_COPY_RELOCS 1 |
f4656909 | 3080 | |
721956f4 AM |
3081 | /* Section name for stubs is the associated section name plus this |
3082 | string. */ | |
3083 | #define STUB_SUFFIX ".stub" | |
3084 | ||
3085 | /* Linker stubs. | |
3086 | ppc_stub_long_branch: | |
3087 | Used when a 14 bit branch (or even a 24 bit branch) can't reach its | |
3088 | destination, but a 24 bit branch in a stub section will reach. | |
3089 | . b dest | |
3090 | ||
3091 | ppc_stub_plt_branch: | |
3092 | Similar to the above, but a 24 bit branch in the stub section won't | |
3093 | reach its destination. | |
87e226ce AM |
3094 | . addis %r12,%r2,xxx@toc@ha |
3095 | . ld %r11,xxx@toc@l(%r12) | |
721956f4 AM |
3096 | . mtctr %r11 |
3097 | . bctr | |
3098 | ||
3099 | ppc_stub_plt_call: | |
2c66dc6c AM |
3100 | Used to call a function in a shared library. If it so happens that |
3101 | the plt entry referenced crosses a 64k boundary, then an extra | |
3102 | "addis %r12,%r12,1" will be inserted before the load at xxx+8 or | |
3103 | xxx+16 as appropriate. | |
87e226ce | 3104 | . addis %r12,%r2,xxx@toc@ha |
721956f4 | 3105 | . std %r2,40(%r1) |
87e226ce AM |
3106 | . ld %r11,xxx+0@toc@l(%r12) |
3107 | . ld %r2,xxx+8@toc@l(%r12) | |
721956f4 | 3108 | . mtctr %r11 |
87e226ce | 3109 | . ld %r11,xxx+16@toc@l(%r12) |
721956f4 | 3110 | . bctr |
ad8e1ba5 AM |
3111 | |
3112 | ppc_stub_long_branch and ppc_stub_plt_branch may also have additional | |
3113 | code to adjust the value and save r2 to support multiple toc sections. | |
3114 | A ppc_stub_long_branch with an r2 offset looks like: | |
3115 | . std %r2,40(%r1) | |
3116 | . addis %r2,%r2,off@ha | |
3117 | . addi %r2,%r2,off@l | |
3118 | . b dest | |
3119 | ||
3120 | A ppc_stub_plt_branch with an r2 offset looks like: | |
3121 | . std %r2,40(%r1) | |
3122 | . addis %r12,%r2,xxx@toc@ha | |
3123 | . ld %r11,xxx@toc@l(%r12) | |
3124 | . addis %r2,%r2,off@ha | |
3125 | . addi %r2,%r2,off@l | |
3126 | . mtctr %r11 | |
3127 | . bctr | |
721956f4 AM |
3128 | */ |
3129 | ||
3130 | enum ppc_stub_type { | |
3131 | ppc_stub_none, | |
3132 | ppc_stub_long_branch, | |
ad8e1ba5 | 3133 | ppc_stub_long_branch_r2off, |
721956f4 | 3134 | ppc_stub_plt_branch, |
ad8e1ba5 | 3135 | ppc_stub_plt_branch_r2off, |
721956f4 AM |
3136 | ppc_stub_plt_call |
3137 | }; | |
3138 | ||
3139 | struct ppc_stub_hash_entry { | |
3140 | ||
3141 | /* Base hash table entry structure. */ | |
3142 | struct bfd_hash_entry root; | |
3143 | ||
ad8e1ba5 AM |
3144 | enum ppc_stub_type stub_type; |
3145 | ||
721956f4 AM |
3146 | /* The stub section. */ |
3147 | asection *stub_sec; | |
3148 | ||
3149 | /* Offset within stub_sec of the beginning of this stub. */ | |
3150 | bfd_vma stub_offset; | |
3151 | ||
3152 | /* Given the symbol's value and its section we can determine its final | |
3153 | value when building the stubs (so the stub knows where to jump. */ | |
3154 | bfd_vma target_value; | |
3155 | asection *target_section; | |
3156 | ||
721956f4 AM |
3157 | /* The symbol table entry, if any, that this was derived from. */ |
3158 | struct ppc_link_hash_entry *h; | |
3159 | ||
411e1bfb AM |
3160 | /* And the reloc addend that this was derived from. */ |
3161 | bfd_vma addend; | |
3162 | ||
721956f4 AM |
3163 | /* Where this stub is being called from, or, in the case of combined |
3164 | stub sections, the first input section in the group. */ | |
3165 | asection *id_sec; | |
3166 | }; | |
3167 | ||
3168 | struct ppc_branch_hash_entry { | |
3169 | ||
3170 | /* Base hash table entry structure. */ | |
3171 | struct bfd_hash_entry root; | |
3172 | ||
3173 | /* Offset within .branch_lt. */ | |
3174 | unsigned int offset; | |
3175 | ||
3176 | /* Generation marker. */ | |
3177 | unsigned int iter; | |
3178 | }; | |
65f38f15 AM |
3179 | |
3180 | struct ppc_link_hash_entry | |
3181 | { | |
3182 | struct elf_link_hash_entry elf; | |
3183 | ||
721956f4 AM |
3184 | /* A pointer to the most recently used stub hash entry against this |
3185 | symbol. */ | |
3186 | struct ppc_stub_hash_entry *stub_cache; | |
3187 | ||
65f38f15 AM |
3188 | /* Track dynamic relocs copied for this symbol. */ |
3189 | struct ppc_dyn_relocs *dyn_relocs; | |
e86ce104 | 3190 | |
721956f4 | 3191 | /* Link between function code and descriptor symbols. */ |
34814b9f | 3192 | struct ppc_link_hash_entry *oh; |
721956f4 | 3193 | |
e86ce104 AM |
3194 | /* Flag function code and descriptor symbols. */ |
3195 | unsigned int is_func:1; | |
3196 | unsigned int is_func_descriptor:1; | |
411e1bfb | 3197 | |
8843416a AM |
3198 | /* Whether global opd sym has been adjusted or not. |
3199 | After ppc64_elf_edit_opd has run, this flag should be set for all | |
3200 | globals defined in any opd section. */ | |
754021d0 AM |
3201 | unsigned int adjust_done:1; |
3202 | ||
99877b66 AM |
3203 | /* Set if we twiddled this symbol to weak at some stage. */ |
3204 | unsigned int was_undefined:1; | |
3205 | ||
411e1bfb | 3206 | /* Contexts in which symbol is used in the GOT (or TOC). |
e7b938ca AM |
3207 | TLS_GD .. TLS_EXPLICIT bits are or'd into the mask as the |
3208 | corresponding relocs are encountered during check_relocs. | |
3209 | tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to | |
3210 | indicate the corresponding GOT entry type is not needed. | |
3211 | tls_optimize may also set TLS_TPRELGD when a GD reloc turns into | |
3212 | a TPREL one. We use a separate flag rather than setting TPREL | |
3213 | just for convenience in distinguishing the two cases. */ | |
3214 | #define TLS_GD 1 /* GD reloc. */ | |
3215 | #define TLS_LD 2 /* LD reloc. */ | |
3216 | #define TLS_TPREL 4 /* TPREL reloc, => IE. */ | |
3217 | #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */ | |
3218 | #define TLS_TLS 16 /* Any TLS reloc. */ | |
3219 | #define TLS_EXPLICIT 32 /* Marks TOC section TLS relocs. */ | |
3220 | #define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */ | |
3221 | char tls_mask; | |
65f38f15 AM |
3222 | }; |
3223 | ||
3224 | /* ppc64 ELF linker hash table. */ | |
3225 | ||
3226 | struct ppc_link_hash_table | |
3227 | { | |
3228 | struct elf_link_hash_table elf; | |
3229 | ||
721956f4 AM |
3230 | /* The stub hash table. */ |
3231 | struct bfd_hash_table stub_hash_table; | |
3232 | ||
3233 | /* Another hash table for plt_branch stubs. */ | |
3234 | struct bfd_hash_table branch_hash_table; | |
3235 | ||
3236 | /* Linker stub bfd. */ | |
3237 | bfd *stub_bfd; | |
3238 | ||
3239 | /* Linker call-backs. */ | |
4ce794b7 AM |
3240 | asection * (*add_stub_section) (const char *, asection *); |
3241 | void (*layout_sections_again) (void); | |
721956f4 AM |
3242 | |
3243 | /* Array to keep track of which stub sections have been created, and | |
3244 | information on stub grouping. */ | |
3245 | struct map_stub { | |
3246 | /* This is the section to which stubs in the group will be attached. */ | |
3247 | asection *link_sec; | |
3248 | /* The stub section. */ | |
3249 | asection *stub_sec; | |
ad8e1ba5 AM |
3250 | /* Along with elf_gp, specifies the TOC pointer used in this group. */ |
3251 | bfd_vma toc_off; | |
721956f4 AM |
3252 | } *stub_group; |
3253 | ||
ad8e1ba5 AM |
3254 | /* Temp used when calculating TOC pointers. */ |
3255 | bfd_vma toc_curr; | |
3256 | ||
8f3bab57 AM |
3257 | /* Highest input section id. */ |
3258 | int top_id; | |
3259 | ||
734b6cf9 AM |
3260 | /* Highest output section index. */ |
3261 | int top_index; | |
3262 | ||
3263 | /* List of input sections for each output section. */ | |
3264 | asection **input_list; | |
721956f4 | 3265 | |
65f38f15 | 3266 | /* Short-cuts to get to dynamic linker sections. */ |
4ce794b7 | 3267 | asection *got; |
4ce794b7 AM |
3268 | asection *plt; |
3269 | asection *relplt; | |
3270 | asection *dynbss; | |
3271 | asection *relbss; | |
3272 | asection *glink; | |
82bd7b59 | 3273 | asection *sfpr; |
4ce794b7 AM |
3274 | asection *brlt; |
3275 | asection *relbrlt; | |
ec338859 | 3276 | |
8387904d AM |
3277 | /* Shortcut to .__tls_get_addr and __tls_get_addr. */ |
3278 | struct ppc_link_hash_entry *tls_get_addr; | |
3279 | struct ppc_link_hash_entry *tls_get_addr_fd; | |
411e1bfb | 3280 | |
9b5ecbd0 AM |
3281 | /* Statistics. */ |
3282 | unsigned long stub_count[ppc_stub_plt_call]; | |
3283 | ||
ad8e1ba5 | 3284 | /* Set if we should emit symbols for stubs. */ |
99877b66 | 3285 | unsigned int emit_stub_syms:1; |
ad8e1ba5 | 3286 | |
5d1634d7 | 3287 | /* Set on error. */ |
99877b66 | 3288 | unsigned int stub_error:1; |
721956f4 AM |
3289 | |
3290 | /* Flag set when small branches are detected. Used to | |
3291 | select suitable defaults for the stub group size. */ | |
99877b66 AM |
3292 | unsigned int has_14bit_branch:1; |
3293 | ||
3294 | /* Temp used by ppc64_elf_check_directives. */ | |
3295 | unsigned int twiddled_syms:1; | |
721956f4 AM |
3296 | |
3297 | /* Incremented every time we size stubs. */ | |
3298 | unsigned int stub_iteration; | |
5d1634d7 | 3299 | |
ec338859 AM |
3300 | /* Small local sym to section mapping cache. */ |
3301 | struct sym_sec_cache sym_sec; | |
65f38f15 AM |
3302 | }; |
3303 | ||
3304 | /* Get the ppc64 ELF linker hash table from a link_info structure. */ | |
3305 | ||
3306 | #define ppc_hash_table(p) \ | |
3307 | ((struct ppc_link_hash_table *) ((p)->hash)) | |
3308 | ||
721956f4 AM |
3309 | #define ppc_stub_hash_lookup(table, string, create, copy) \ |
3310 | ((struct ppc_stub_hash_entry *) \ | |
3311 | bfd_hash_lookup ((table), (string), (create), (copy))) | |
3312 | ||
3313 | #define ppc_branch_hash_lookup(table, string, create, copy) \ | |
3314 | ((struct ppc_branch_hash_entry *) \ | |
3315 | bfd_hash_lookup ((table), (string), (create), (copy))) | |
3316 | ||
3317 | /* Create an entry in the stub hash table. */ | |
3318 | ||
3319 | static struct bfd_hash_entry * | |
4ce794b7 AM |
3320 | stub_hash_newfunc (struct bfd_hash_entry *entry, |
3321 | struct bfd_hash_table *table, | |
3322 | const char *string) | |
721956f4 AM |
3323 | { |
3324 | /* Allocate the structure if it has not already been allocated by a | |
3325 | subclass. */ | |
3326 | if (entry == NULL) | |
3327 | { | |
3328 | entry = bfd_hash_allocate (table, sizeof (struct ppc_stub_hash_entry)); | |
3329 | if (entry == NULL) | |
3330 | return entry; | |
3331 | } | |
3332 | ||
3333 | /* Call the allocation method of the superclass. */ | |
3334 | entry = bfd_hash_newfunc (entry, table, string); | |
3335 | if (entry != NULL) | |
3336 | { | |
3337 | struct ppc_stub_hash_entry *eh; | |
3338 | ||
3339 | /* Initialize the local fields. */ | |
3340 | eh = (struct ppc_stub_hash_entry *) entry; | |
ad8e1ba5 | 3341 | eh->stub_type = ppc_stub_none; |
721956f4 AM |
3342 | eh->stub_sec = NULL; |
3343 | eh->stub_offset = 0; | |
3344 | eh->target_value = 0; | |
3345 | eh->target_section = NULL; | |
721956f4 AM |
3346 | eh->h = NULL; |
3347 | eh->id_sec = NULL; | |
3348 | } | |
3349 | ||
3350 | return entry; | |
3351 | } | |
3352 | ||
3353 | /* Create an entry in the branch hash table. */ | |
3354 | ||
3355 | static struct bfd_hash_entry * | |
4ce794b7 AM |
3356 | branch_hash_newfunc (struct bfd_hash_entry *entry, |
3357 | struct bfd_hash_table *table, | |
3358 | const char *string) | |
721956f4 AM |
3359 | { |
3360 | /* Allocate the structure if it has not already been allocated by a | |
3361 | subclass. */ | |
3362 | if (entry == NULL) | |
3363 | { | |
3364 | entry = bfd_hash_allocate (table, sizeof (struct ppc_branch_hash_entry)); | |
3365 | if (entry == NULL) | |
3366 | return entry; | |
3367 | } | |
3368 | ||
3369 | /* Call the allocation method of the superclass. */ | |
3370 | entry = bfd_hash_newfunc (entry, table, string); | |
3371 | if (entry != NULL) | |
3372 | { | |
3373 | struct ppc_branch_hash_entry *eh; | |
3374 | ||
3375 | /* Initialize the local fields. */ | |
3376 | eh = (struct ppc_branch_hash_entry *) entry; | |
3377 | eh->offset = 0; | |
3378 | eh->iter = 0; | |
3379 | } | |
3380 | ||
3381 | return entry; | |
3382 | } | |
3383 | ||
65f38f15 AM |
3384 | /* Create an entry in a ppc64 ELF linker hash table. */ |
3385 | ||
3386 | static struct bfd_hash_entry * | |
4ce794b7 AM |
3387 | link_hash_newfunc (struct bfd_hash_entry *entry, |
3388 | struct bfd_hash_table *table, | |
3389 | const char *string) | |
65f38f15 AM |
3390 | { |
3391 | /* Allocate the structure if it has not already been allocated by a | |
3392 | subclass. */ | |
3393 | if (entry == NULL) | |
3394 | { | |
3395 | entry = bfd_hash_allocate (table, sizeof (struct ppc_link_hash_entry)); | |
3396 | if (entry == NULL) | |
3397 | return entry; | |
3398 | } | |
3399 | ||
3400 | /* Call the allocation method of the superclass. */ | |
3401 | entry = _bfd_elf_link_hash_newfunc (entry, table, string); | |
3402 | if (entry != NULL) | |
3403 | { | |
3404 | struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) entry; | |
3405 | ||
721956f4 | 3406 | eh->stub_cache = NULL; |
65f38f15 | 3407 | eh->dyn_relocs = NULL; |
721956f4 | 3408 | eh->oh = NULL; |
e86ce104 AM |
3409 | eh->is_func = 0; |
3410 | eh->is_func_descriptor = 0; | |
754021d0 | 3411 | eh->adjust_done = 0; |
99877b66 | 3412 | eh->was_undefined = 0; |
e7b938ca | 3413 | eh->tls_mask = 0; |
65f38f15 AM |
3414 | } |
3415 | ||
3416 | return entry; | |
3417 | } | |
3418 | ||
3419 | /* Create a ppc64 ELF linker hash table. */ | |
3420 | ||
3421 | static struct bfd_link_hash_table * | |
4ce794b7 | 3422 | ppc64_elf_link_hash_table_create (bfd *abfd) |
65f38f15 AM |
3423 | { |
3424 | struct ppc_link_hash_table *htab; | |
3425 | bfd_size_type amt = sizeof (struct ppc_link_hash_table); | |
3426 | ||
4ce794b7 | 3427 | htab = bfd_zmalloc (amt); |
65f38f15 AM |
3428 | if (htab == NULL) |
3429 | return NULL; | |
3430 | ||
3431 | if (! _bfd_elf_link_hash_table_init (&htab->elf, abfd, link_hash_newfunc)) | |
3432 | { | |
e2d34d7d | 3433 | free (htab); |
65f38f15 AM |
3434 | return NULL; |
3435 | } | |
3436 | ||
721956f4 AM |
3437 | /* Init the stub hash table too. */ |
3438 | if (!bfd_hash_table_init (&htab->stub_hash_table, stub_hash_newfunc)) | |
3439 | return NULL; | |
3440 | ||
3441 | /* And the branch hash table. */ | |
3442 | if (!bfd_hash_table_init (&htab->branch_hash_table, branch_hash_newfunc)) | |
3443 | return NULL; | |
3444 | ||
3254fd24 AM |
3445 | /* Initializing two fields of the union is just cosmetic. We really |
3446 | only care about glist, but when compiled on a 32-bit host the | |
3447 | bfd_vma fields are larger. Setting the bfd_vma to zero makes | |
3448 | debugger inspection of these fields look nicer. */ | |
3449 | htab->elf.init_refcount.refcount = 0; | |
3450 | htab->elf.init_refcount.glist = NULL; | |
3451 | htab->elf.init_offset.offset = 0; | |
3452 | htab->elf.init_offset.glist = NULL; | |
3453 | ||
65f38f15 AM |
3454 | return &htab->elf.root; |
3455 | } | |
3456 | ||
721956f4 AM |
3457 | /* Free the derived linker hash table. */ |
3458 | ||
3459 | static void | |
4ce794b7 | 3460 | ppc64_elf_link_hash_table_free (struct bfd_link_hash_table *hash) |
721956f4 AM |
3461 | { |
3462 | struct ppc_link_hash_table *ret = (struct ppc_link_hash_table *) hash; | |
3463 | ||
3464 | bfd_hash_table_free (&ret->stub_hash_table); | |
3465 | bfd_hash_table_free (&ret->branch_hash_table); | |
3466 | _bfd_generic_link_hash_table_free (hash); | |
3467 | } | |
3468 | ||
e717da7e AM |
3469 | /* Satisfy the ELF linker by filling in some fields in our fake bfd. */ |
3470 | ||
3471 | void | |
3472 | ppc64_elf_init_stub_bfd (bfd *abfd, struct bfd_link_info *info) | |
3473 | { | |
3474 | struct ppc_link_hash_table *htab; | |
3475 | ||
3476 | elf_elfheader (abfd)->e_ident[EI_CLASS] = ELFCLASS64; | |
3477 | ||
3478 | /* Always hook our dynamic sections into the first bfd, which is the | |
3479 | linker created stub bfd. This ensures that the GOT header is at | |
3480 | the start of the output TOC section. */ | |
3481 | htab = ppc_hash_table (info); | |
3482 | htab->stub_bfd = abfd; | |
3483 | htab->elf.dynobj = abfd; | |
3484 | } | |
3485 | ||
721956f4 AM |
3486 | /* Build a name for an entry in the stub hash table. */ |
3487 | ||
3488 | static char * | |
4ce794b7 AM |
3489 | ppc_stub_name (const asection *input_section, |
3490 | const asection *sym_sec, | |
3491 | const struct ppc_link_hash_entry *h, | |
3492 | const Elf_Internal_Rela *rel) | |
721956f4 AM |
3493 | { |
3494 | char *stub_name; | |
3495 | bfd_size_type len; | |
3496 | ||
3497 | /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31 | |
3498 | offsets from a sym as a branch target? In fact, we could | |
3499 | probably assume the addend is always zero. */ | |
3500 | BFD_ASSERT (((int) rel->r_addend & 0xffffffff) == rel->r_addend); | |
3501 | ||
3502 | if (h) | |
3503 | { | |
3504 | len = 8 + 1 + strlen (h->elf.root.root.string) + 1 + 8 + 1; | |
3505 | stub_name = bfd_malloc (len); | |
3506 | if (stub_name != NULL) | |
3507 | { | |
97b639ba | 3508 | sprintf (stub_name, "%08x.%s+%x", |
721956f4 AM |
3509 | input_section->id & 0xffffffff, |
3510 | h->elf.root.root.string, | |
3511 | (int) rel->r_addend & 0xffffffff); | |
3512 | } | |
3513 | } | |
3514 | else | |
3515 | { | |
ad8e1ba5 | 3516 | len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1; |
721956f4 AM |
3517 | stub_name = bfd_malloc (len); |
3518 | if (stub_name != NULL) | |
3519 | { | |
97b639ba | 3520 | sprintf (stub_name, "%08x.%x:%x+%x", |
721956f4 AM |
3521 | input_section->id & 0xffffffff, |
3522 | sym_sec->id & 0xffffffff, | |
3523 | (int) ELF64_R_SYM (rel->r_info) & 0xffffffff, | |
3524 | (int) rel->r_addend & 0xffffffff); | |
3525 | } | |
3526 | } | |
3527 | return stub_name; | |
3528 | } | |
3529 | ||
3530 | /* Look up an entry in the stub hash. Stub entries are cached because | |
3531 | creating the stub name takes a bit of time. */ | |
3532 | ||
3533 | static struct ppc_stub_hash_entry * | |
4ce794b7 AM |
3534 | ppc_get_stub_entry (const asection *input_section, |
3535 | const asection *sym_sec, | |
039b3fef | 3536 | struct ppc_link_hash_entry *h, |
4ce794b7 AM |
3537 | const Elf_Internal_Rela *rel, |
3538 | struct ppc_link_hash_table *htab) | |
721956f4 AM |
3539 | { |
3540 | struct ppc_stub_hash_entry *stub_entry; | |
721956f4 AM |
3541 | const asection *id_sec; |
3542 | ||
3543 | /* If this input section is part of a group of sections sharing one | |
3544 | stub section, then use the id of the first section in the group. | |
3545 | Stub names need to include a section id, as there may well be | |
3546 | more than one stub used to reach say, printf, and we need to | |
3547 | distinguish between them. */ | |
3548 | id_sec = htab->stub_group[input_section->id].link_sec; | |
3549 | ||
3550 | if (h != NULL && h->stub_cache != NULL | |
3551 | && h->stub_cache->h == h | |
3552 | && h->stub_cache->id_sec == id_sec) | |
3553 | { | |
3554 | stub_entry = h->stub_cache; | |
3555 | } | |
3556 | else | |
3557 | { | |
3558 | char *stub_name; | |
3559 | ||
3560 | stub_name = ppc_stub_name (id_sec, sym_sec, h, rel); | |
3561 | if (stub_name == NULL) | |
3562 | return NULL; | |
3563 | ||
3564 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, | |
b34976b6 | 3565 | stub_name, FALSE, FALSE); |
721956f4 AM |
3566 | if (h != NULL) |
3567 | h->stub_cache = stub_entry; | |
3568 | ||
3569 | free (stub_name); | |
3570 | } | |
3571 | ||
3572 | return stub_entry; | |
3573 | } | |
3574 | ||
3575 | /* Add a new stub entry to the stub hash. Not all fields of the new | |
3576 | stub entry are initialised. */ | |
3577 | ||
3578 | static struct ppc_stub_hash_entry * | |
4ce794b7 AM |
3579 | ppc_add_stub (const char *stub_name, |
3580 | asection *section, | |
3581 | struct ppc_link_hash_table *htab) | |
721956f4 AM |
3582 | { |
3583 | asection *link_sec; | |
3584 | asection *stub_sec; | |
3585 | struct ppc_stub_hash_entry *stub_entry; | |
3586 | ||
3587 | link_sec = htab->stub_group[section->id].link_sec; | |
3588 | stub_sec = htab->stub_group[section->id].stub_sec; | |
3589 | if (stub_sec == NULL) | |
3590 | { | |
3591 | stub_sec = htab->stub_group[link_sec->id].stub_sec; | |
3592 | if (stub_sec == NULL) | |
3593 | { | |
d4c88bbb | 3594 | size_t namelen; |
721956f4 AM |
3595 | bfd_size_type len; |
3596 | char *s_name; | |
3597 | ||
d4c88bbb AM |
3598 | namelen = strlen (link_sec->name); |
3599 | len = namelen + sizeof (STUB_SUFFIX); | |
721956f4 AM |
3600 | s_name = bfd_alloc (htab->stub_bfd, len); |
3601 | if (s_name == NULL) | |
3602 | return NULL; | |
3603 | ||
d4c88bbb AM |
3604 | memcpy (s_name, link_sec->name, namelen); |
3605 | memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX)); | |
721956f4 AM |
3606 | stub_sec = (*htab->add_stub_section) (s_name, link_sec); |
3607 | if (stub_sec == NULL) | |
3608 | return NULL; | |
3609 | htab->stub_group[link_sec->id].stub_sec = stub_sec; | |
3610 | } | |
3611 | htab->stub_group[section->id].stub_sec = stub_sec; | |
3612 | } | |
3613 | ||
3614 | /* Enter this entry into the linker stub hash table. */ | |
3615 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, stub_name, | |
b34976b6 | 3616 | TRUE, FALSE); |
721956f4 AM |
3617 | if (stub_entry == NULL) |
3618 | { | |
d003868e AM |
3619 | (*_bfd_error_handler) (_("%B: cannot create stub entry %s"), |
3620 | section->owner, stub_name); | |
721956f4 AM |
3621 | return NULL; |
3622 | } | |
3623 | ||
3624 | stub_entry->stub_sec = stub_sec; | |
3625 | stub_entry->stub_offset = 0; | |
3626 | stub_entry->id_sec = link_sec; | |
3627 | return stub_entry; | |
3628 | } | |
3629 | ||
82bd7b59 AM |
3630 | /* Create sections for linker generated code. */ |
3631 | ||
b34976b6 | 3632 | static bfd_boolean |
4ce794b7 | 3633 | create_linkage_sections (bfd *dynobj, struct bfd_link_info *info) |
82bd7b59 AM |
3634 | { |
3635 | struct ppc_link_hash_table *htab; | |
3636 | flagword flags; | |
3637 | ||
3638 | htab = ppc_hash_table (info); | |
3639 | ||
3640 | /* Create .sfpr for code to save and restore fp regs. */ | |
3641 | flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY | |
3642 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
721956f4 | 3643 | htab->sfpr = bfd_make_section_anyway (dynobj, ".sfpr"); |
82bd7b59 AM |
3644 | if (htab->sfpr == NULL |
3645 | || ! bfd_set_section_flags (dynobj, htab->sfpr, flags) | |
3646 | || ! bfd_set_section_alignment (dynobj, htab->sfpr, 2)) | |
b34976b6 | 3647 | return FALSE; |
82bd7b59 | 3648 | |
721956f4 | 3649 | /* Create .glink for lazy dynamic linking support. */ |
4ce794b7 AM |
3650 | htab->glink = bfd_make_section_anyway (dynobj, ".glink"); |
3651 | if (htab->glink == NULL | |
3652 | || ! bfd_set_section_flags (dynobj, htab->glink, flags) | |
3653 | || ! bfd_set_section_alignment (dynobj, htab->glink, 2)) | |
b34976b6 | 3654 | return FALSE; |
82bd7b59 | 3655 | |
721956f4 AM |
3656 | /* Create .branch_lt for plt_branch stubs. */ |
3657 | flags = (SEC_ALLOC | SEC_LOAD | |
3658 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
4ce794b7 AM |
3659 | htab->brlt = bfd_make_section_anyway (dynobj, ".branch_lt"); |
3660 | if (htab->brlt == NULL | |
3661 | || ! bfd_set_section_flags (dynobj, htab->brlt, flags) | |
3662 | || ! bfd_set_section_alignment (dynobj, htab->brlt, 3)) | |
b34976b6 | 3663 | return FALSE; |
721956f4 AM |
3664 | |
3665 | if (info->shared) | |
3666 | { | |
3667 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | |
3668 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
4ce794b7 AM |
3669 | htab->relbrlt = bfd_make_section_anyway (dynobj, ".rela.branch_lt"); |
3670 | if (!htab->relbrlt | |
3671 | || ! bfd_set_section_flags (dynobj, htab->relbrlt, flags) | |
3672 | || ! bfd_set_section_alignment (dynobj, htab->relbrlt, 3)) | |
b34976b6 | 3673 | return FALSE; |
721956f4 | 3674 | } |
b34976b6 | 3675 | return TRUE; |
82bd7b59 AM |
3676 | } |
3677 | ||
e717da7e AM |
3678 | /* Create .got and .rela.got sections in ABFD, and .got in dynobj if |
3679 | not already done. */ | |
65f38f15 | 3680 | |
b34976b6 | 3681 | static bfd_boolean |
e717da7e | 3682 | create_got_section (bfd *abfd, struct bfd_link_info *info) |
65f38f15 | 3683 | { |
e717da7e AM |
3684 | asection *got, *relgot; |
3685 | flagword flags; | |
3686 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
65f38f15 | 3687 | |
4ce794b7 | 3688 | if (!htab->got) |
e717da7e AM |
3689 | { |
3690 | if (! _bfd_elf_create_got_section (htab->elf.dynobj, info)) | |
3691 | return FALSE; | |
3692 | ||
3693 | htab->got = bfd_get_section_by_name (htab->elf.dynobj, ".got"); | |
3694 | if (!htab->got) | |
3695 | abort (); | |
3696 | } | |
3697 | ||
3698 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY | |
3699 | | SEC_LINKER_CREATED); | |
3700 | ||
3701 | got = bfd_make_section (abfd, ".got"); | |
3702 | if (!got | |
3703 | || !bfd_set_section_flags (abfd, got, flags) | |
3704 | || !bfd_set_section_alignment (abfd, got, 3)) | |
3705 | return FALSE; | |
65f38f15 | 3706 | |
e717da7e AM |
3707 | relgot = bfd_make_section (abfd, ".rela.got"); |
3708 | if (!relgot | |
3709 | || ! bfd_set_section_flags (abfd, relgot, flags | SEC_READONLY) | |
3710 | || ! bfd_set_section_alignment (abfd, relgot, 3)) | |
b34976b6 | 3711 | return FALSE; |
e717da7e AM |
3712 | |
3713 | ppc64_elf_tdata (abfd)->got = got; | |
3714 | ppc64_elf_tdata (abfd)->relgot = relgot; | |
b34976b6 | 3715 | return TRUE; |
65f38f15 | 3716 | } |
5bd4f169 | 3717 | |
82bd7b59 | 3718 | /* Create the dynamic sections, and set up shortcuts. */ |
5bd4f169 | 3719 | |
b34976b6 | 3720 | static bfd_boolean |
4ce794b7 | 3721 | ppc64_elf_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info) |
5bd4f169 | 3722 | { |
65f38f15 | 3723 | struct ppc_link_hash_table *htab; |
5bd4f169 | 3724 | |
65f38f15 | 3725 | if (!_bfd_elf_create_dynamic_sections (dynobj, info)) |
b34976b6 | 3726 | return FALSE; |
65f38f15 | 3727 | |
e717da7e AM |
3728 | htab = ppc_hash_table (info); |
3729 | if (!htab->got) | |
3730 | htab->got = bfd_get_section_by_name (dynobj, ".got"); | |
4ce794b7 AM |
3731 | htab->plt = bfd_get_section_by_name (dynobj, ".plt"); |
3732 | htab->relplt = bfd_get_section_by_name (dynobj, ".rela.plt"); | |
3733 | htab->dynbss = bfd_get_section_by_name (dynobj, ".dynbss"); | |
65f38f15 | 3734 | if (!info->shared) |
4ce794b7 | 3735 | htab->relbss = bfd_get_section_by_name (dynobj, ".rela.bss"); |
65f38f15 | 3736 | |
e717da7e | 3737 | if (!htab->got || !htab->plt || !htab->relplt || !htab->dynbss |
4ce794b7 | 3738 | || (!info->shared && !htab->relbss)) |
65f38f15 AM |
3739 | abort (); |
3740 | ||
b34976b6 | 3741 | return TRUE; |
5bd4f169 AM |
3742 | } |
3743 | ||
65f38f15 AM |
3744 | /* Copy the extra info we tack onto an elf_link_hash_entry. */ |
3745 | ||
3746 | static void | |
9c5bfbb7 AM |
3747 | ppc64_elf_copy_indirect_symbol |
3748 | (const struct elf_backend_data *bed ATTRIBUTE_UNUSED, | |
3749 | struct elf_link_hash_entry *dir, | |
3750 | struct elf_link_hash_entry *ind) | |
65f38f15 AM |
3751 | { |
3752 | struct ppc_link_hash_entry *edir, *eind; | |
81848ca0 | 3753 | flagword mask; |
65f38f15 AM |
3754 | |
3755 | edir = (struct ppc_link_hash_entry *) dir; | |
3756 | eind = (struct ppc_link_hash_entry *) ind; | |
3757 | ||
411e1bfb | 3758 | /* Copy over any dynamic relocs we may have on the indirect sym. */ |
bbd7ec4a | 3759 | if (eind->dyn_relocs != NULL) |
65f38f15 | 3760 | { |
bbd7ec4a AM |
3761 | if (edir->dyn_relocs != NULL) |
3762 | { | |
3763 | struct ppc_dyn_relocs **pp; | |
3764 | struct ppc_dyn_relocs *p; | |
3765 | ||
411e1bfb | 3766 | if (eind->elf.root.type == bfd_link_hash_indirect) |
bbd7ec4a AM |
3767 | abort (); |
3768 | ||
3769 | /* Add reloc counts against the weak sym to the strong sym | |
3770 | list. Merge any entries against the same section. */ | |
3771 | for (pp = &eind->dyn_relocs; (p = *pp) != NULL; ) | |
3772 | { | |
3773 | struct ppc_dyn_relocs *q; | |
3774 | ||
3775 | for (q = edir->dyn_relocs; q != NULL; q = q->next) | |
3776 | if (q->sec == p->sec) | |
3777 | { | |
3778 | q->pc_count += p->pc_count; | |
3779 | q->count += p->count; | |
3780 | *pp = p->next; | |
3781 | break; | |
3782 | } | |
3783 | if (q == NULL) | |
3784 | pp = &p->next; | |
3785 | } | |
3786 | *pp = edir->dyn_relocs; | |
3787 | } | |
3788 | ||
65f38f15 AM |
3789 | edir->dyn_relocs = eind->dyn_relocs; |
3790 | eind->dyn_relocs = NULL; | |
3791 | } | |
65f38f15 | 3792 | |
6349e628 AM |
3793 | edir->is_func |= eind->is_func; |
3794 | edir->is_func_descriptor |= eind->is_func_descriptor; | |
58ac9f71 | 3795 | edir->tls_mask |= eind->tls_mask; |
6349e628 | 3796 | |
81848ca0 | 3797 | mask = (ELF_LINK_HASH_REF_DYNAMIC | ELF_LINK_HASH_REF_REGULAR |
3addb0a9 DJ |
3798 | | ELF_LINK_HASH_REF_REGULAR_NONWEAK | ELF_LINK_NON_GOT_REF |
3799 | | ELF_LINK_HASH_NEEDS_PLT); | |
81848ca0 AM |
3800 | /* If called to transfer flags for a weakdef during processing |
3801 | of elf_adjust_dynamic_symbol, don't copy ELF_LINK_NON_GOT_REF. | |
3802 | We clear it ourselves for ELIMINATE_COPY_RELOCS. */ | |
3803 | if (ELIMINATE_COPY_RELOCS | |
3804 | && eind->elf.root.type != bfd_link_hash_indirect | |
3805 | && (edir->elf.elf_link_hash_flags & ELF_LINK_HASH_DYNAMIC_ADJUSTED) != 0) | |
3806 | mask &= ~ELF_LINK_NON_GOT_REF; | |
3807 | ||
3808 | edir->elf.elf_link_hash_flags |= eind->elf.elf_link_hash_flags & mask; | |
6349e628 AM |
3809 | |
3810 | /* If we were called to copy over info for a weak sym, that's all. */ | |
3811 | if (eind->elf.root.type != bfd_link_hash_indirect) | |
3812 | return; | |
3813 | ||
81848ca0 AM |
3814 | /* Copy over got entries that we may have already seen to the |
3815 | symbol which just became indirect. */ | |
411e1bfb AM |
3816 | if (eind->elf.got.glist != NULL) |
3817 | { | |
3818 | if (edir->elf.got.glist != NULL) | |
3819 | { | |
3820 | struct got_entry **entp; | |
3821 | struct got_entry *ent; | |
3822 | ||
3823 | for (entp = &eind->elf.got.glist; (ent = *entp) != NULL; ) | |
3824 | { | |
3825 | struct got_entry *dent; | |
3826 | ||
3827 | for (dent = edir->elf.got.glist; dent != NULL; dent = dent->next) | |
3828 | if (dent->addend == ent->addend | |
e717da7e | 3829 | && dent->owner == ent->owner |
411e1bfb AM |
3830 | && dent->tls_type == ent->tls_type) |
3831 | { | |
3832 | dent->got.refcount += ent->got.refcount; | |
3833 | *entp = ent->next; | |
3834 | break; | |
3835 | } | |
3836 | if (dent == NULL) | |
3837 | entp = &ent->next; | |
3838 | } | |
3839 | *entp = edir->elf.got.glist; | |
3840 | } | |
3841 | ||
3842 | edir->elf.got.glist = eind->elf.got.glist; | |
3843 | eind->elf.got.glist = NULL; | |
3844 | } | |
3845 | ||
3846 | /* And plt entries. */ | |
3847 | if (eind->elf.plt.plist != NULL) | |
3848 | { | |
3849 | if (edir->elf.plt.plist != NULL) | |
3850 | { | |
3851 | struct plt_entry **entp; | |
3852 | struct plt_entry *ent; | |
3853 | ||
3854 | for (entp = &eind->elf.plt.plist; (ent = *entp) != NULL; ) | |
3855 | { | |
3856 | struct plt_entry *dent; | |
3857 | ||
3858 | for (dent = edir->elf.plt.plist; dent != NULL; dent = dent->next) | |
3859 | if (dent->addend == ent->addend) | |
3860 | { | |
3861 | dent->plt.refcount += ent->plt.refcount; | |
3862 | *entp = ent->next; | |
3863 | break; | |
3864 | } | |
3865 | if (dent == NULL) | |
3866 | entp = &ent->next; | |
3867 | } | |
3868 | *entp = edir->elf.plt.plist; | |
3869 | } | |
3870 | ||
3871 | edir->elf.plt.plist = eind->elf.plt.plist; | |
3872 | eind->elf.plt.plist = NULL; | |
3873 | } | |
3874 | ||
411e1bfb AM |
3875 | if (edir->elf.dynindx == -1) |
3876 | { | |
3877 | edir->elf.dynindx = eind->elf.dynindx; | |
3878 | edir->elf.dynstr_index = eind->elf.dynstr_index; | |
3879 | eind->elf.dynindx = -1; | |
3880 | eind->elf.dynstr_index = 0; | |
3881 | } | |
3882 | else | |
3883 | BFD_ASSERT (eind->elf.dynindx == -1); | |
3884 | } | |
3885 | ||
8387904d AM |
3886 | /* Find the function descriptor hash entry from the given function code |
3887 | hash entry FH. Link the entries via their OH fields. */ | |
3888 | ||
3889 | static struct ppc_link_hash_entry * | |
3890 | get_fdh (struct ppc_link_hash_entry *fh, struct ppc_link_hash_table *htab) | |
3891 | { | |
3892 | struct ppc_link_hash_entry *fdh = fh->oh; | |
3893 | ||
3894 | if (fdh == NULL) | |
3895 | { | |
3896 | const char *fd_name = fh->elf.root.root.string + 1; | |
3897 | ||
3898 | fdh = (struct ppc_link_hash_entry *) | |
3899 | elf_link_hash_lookup (&htab->elf, fd_name, FALSE, FALSE, FALSE); | |
3900 | if (fdh != NULL) | |
3901 | { | |
3902 | fdh->is_func_descriptor = 1; | |
3903 | fdh->oh = fh; | |
3904 | fh->is_func = 1; | |
3905 | fh->oh = fdh; | |
3906 | } | |
3907 | } | |
3908 | ||
3909 | return fdh; | |
3910 | } | |
3911 | ||
3912 | /* Hacks to support old ABI code. | |
3913 | When making function calls, old ABI code references function entry | |
3914 | points (dot symbols), while new ABI code references the function | |
3915 | descriptor symbol. We need to make any combination of reference and | |
3916 | definition work together, without breaking archive linking. | |
3917 | ||
3918 | For a defined function "foo" and an undefined call to "bar": | |
3919 | An old object defines "foo" and ".foo", references ".bar" (possibly | |
3920 | "bar" too). | |
3921 | A new object defines "foo" and references "bar". | |
3922 | ||
3923 | A new object thus has no problem with its undefined symbols being | |
3924 | satisfied by definitions in an old object. On the other hand, the | |
3925 | old object won't have ".bar" satisfied by a new object. */ | |
3926 | ||
3927 | /* Fix function descriptor symbols defined in .opd sections to be | |
3928 | function type. */ | |
555cd476 AM |
3929 | |
3930 | static bfd_boolean | |
3931 | ppc64_elf_add_symbol_hook (bfd *ibfd ATTRIBUTE_UNUSED, | |
3932 | struct bfd_link_info *info ATTRIBUTE_UNUSED, | |
3933 | Elf_Internal_Sym *isym, | |
3934 | const char **name ATTRIBUTE_UNUSED, | |
3935 | flagword *flags ATTRIBUTE_UNUSED, | |
3936 | asection **sec, | |
3937 | bfd_vma *value ATTRIBUTE_UNUSED) | |
3938 | { | |
8843416a AM |
3939 | if (*sec != NULL |
3940 | && strcmp (bfd_get_section_name (ibfd, *sec), ".opd") == 0) | |
555cd476 AM |
3941 | isym->st_info = ELF_ST_INFO (ELF_ST_BIND (isym->st_info), STT_FUNC); |
3942 | return TRUE; | |
3943 | } | |
3944 | ||
8387904d AM |
3945 | /* This function makes an old ABI object reference to ".bar" cause the |
3946 | inclusion of a new ABI object archive that defines "bar". */ | |
3947 | ||
3948 | static struct elf_link_hash_entry * | |
3949 | ppc64_elf_archive_symbol_lookup (bfd *abfd, | |
3950 | struct bfd_link_info *info, | |
3951 | const char *name) | |
3952 | { | |
3953 | struct elf_link_hash_entry *h; | |
3954 | char *dot_name; | |
3955 | size_t len; | |
3956 | ||
3957 | h = _bfd_elf_archive_symbol_lookup (abfd, info, name); | |
3958 | if (h != NULL) | |
3959 | return h; | |
3960 | ||
3961 | if (name[0] == '.') | |
3962 | return h; | |
3963 | ||
3964 | len = strlen (name); | |
3965 | dot_name = bfd_alloc (abfd, len + 2); | |
3966 | if (dot_name == NULL) | |
3967 | return (struct elf_link_hash_entry *) 0 - 1; | |
3968 | dot_name[0] = '.'; | |
3969 | memcpy (dot_name + 1, name, len + 1); | |
3970 | h = _bfd_elf_archive_symbol_lookup (abfd, info, dot_name); | |
3971 | bfd_release (abfd, dot_name); | |
3972 | return h; | |
3973 | } | |
3974 | ||
3975 | /* This function satisfies all old ABI object references to ".bar" if a | |
99877b66 AM |
3976 | new ABI object defines "bar". Well, at least, undefined dot symbols |
3977 | are made weak. This stops later archive searches from including an | |
3978 | object if we already have a function descriptor definition. It also | |
35b0ce59 AM |
3979 | prevents the linker complaining about undefined symbols. |
3980 | We also check and correct mismatched symbol visibility here. The | |
3981 | most restrictive visibility of the function descriptor and the | |
3982 | function entry symbol is used. */ | |
8387904d AM |
3983 | |
3984 | static bfd_boolean | |
3985 | add_symbol_adjust (struct elf_link_hash_entry *h, void *inf) | |
3986 | { | |
3987 | struct bfd_link_info *info; | |
3988 | struct ppc_link_hash_table *htab; | |
99877b66 | 3989 | struct ppc_link_hash_entry *eh; |
8387904d AM |
3990 | struct ppc_link_hash_entry *fdh; |
3991 | ||
3992 | if (h->root.type == bfd_link_hash_indirect) | |
3993 | return TRUE; | |
3994 | ||
3995 | if (h->root.type == bfd_link_hash_warning) | |
3996 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
3997 | ||
35b0ce59 | 3998 | if (h->root.root.string[0] != '.') |
8387904d AM |
3999 | return TRUE; |
4000 | ||
4001 | info = inf; | |
4002 | htab = ppc_hash_table (info); | |
99877b66 AM |
4003 | eh = (struct ppc_link_hash_entry *) h; |
4004 | fdh = get_fdh (eh, htab); | |
8387904d AM |
4005 | if (fdh != NULL) |
4006 | { | |
35b0ce59 AM |
4007 | unsigned entry_vis = ELF_ST_VISIBILITY (eh->elf.other) - 1; |
4008 | unsigned descr_vis = ELF_ST_VISIBILITY (fdh->elf.other) - 1; | |
4009 | if (entry_vis < descr_vis) | |
4010 | fdh->elf.other += entry_vis - descr_vis; | |
4011 | else if (entry_vis > descr_vis) | |
4012 | eh->elf.other += descr_vis - entry_vis; | |
4013 | ||
4014 | if (eh->elf.root.type == bfd_link_hash_undefined) | |
4015 | { | |
4016 | eh->elf.root.type = bfd_link_hash_undefweak; | |
4017 | eh->was_undefined = 1; | |
4018 | htab->twiddled_syms = 1; | |
4019 | } | |
8387904d | 4020 | } |
99877b66 | 4021 | |
8387904d AM |
4022 | return TRUE; |
4023 | } | |
4024 | ||
4025 | static bfd_boolean | |
4026 | ppc64_elf_check_directives (bfd *abfd ATTRIBUTE_UNUSED, | |
4027 | struct bfd_link_info *info) | |
4028 | { | |
99877b66 | 4029 | struct ppc_link_hash_table *htab; |
35b0ce59 AM |
4030 | extern const bfd_target bfd_elf64_powerpc_vec; |
4031 | extern const bfd_target bfd_elf64_powerpcle_vec; | |
99877b66 AM |
4032 | |
4033 | htab = ppc_hash_table (info); | |
35b0ce59 AM |
4034 | if (htab->elf.root.creator != &bfd_elf64_powerpc_vec |
4035 | && htab->elf.root.creator != &bfd_elf64_powerpcle_vec) | |
4036 | return TRUE; | |
4037 | ||
8387904d | 4038 | elf_link_hash_traverse (&htab->elf, add_symbol_adjust, info); |
99877b66 AM |
4039 | |
4040 | /* We need to fix the undefs list for any syms we have twiddled to | |
4041 | undef_weak. */ | |
4042 | if (htab->twiddled_syms) | |
4043 | { | |
4044 | struct bfd_link_hash_entry **pun; | |
4045 | ||
4046 | pun = &htab->elf.root.undefs; | |
4047 | while (*pun != NULL) | |
4048 | { | |
4049 | struct bfd_link_hash_entry *h = *pun; | |
4050 | ||
4051 | if (h->type != bfd_link_hash_undefined | |
4052 | && h->type != bfd_link_hash_common) | |
4053 | { | |
4054 | *pun = h->und_next; | |
4055 | h->und_next = NULL; | |
4056 | if (h == htab->elf.root.undefs_tail) | |
4057 | { | |
4058 | if (pun == &htab->elf.root.undefs) | |
4059 | htab->elf.root.undefs_tail = NULL; | |
4060 | else | |
4061 | /* pun points at an und_next field. Go back to | |
4062 | the start of the link_hash_entry. */ | |
4063 | htab->elf.root.undefs_tail = (struct bfd_link_hash_entry *) | |
4064 | ((char *) pun - ((char *) &h->und_next - (char *) h)); | |
4065 | break; | |
4066 | } | |
4067 | } | |
4068 | else | |
4069 | pun = &h->und_next; | |
4070 | } | |
4071 | ||
4072 | htab->twiddled_syms = 0; | |
4073 | } | |
8387904d AM |
4074 | return TRUE; |
4075 | } | |
4076 | ||
411e1bfb | 4077 | static bfd_boolean |
4ce794b7 AM |
4078 | update_local_sym_info (bfd *abfd, Elf_Internal_Shdr *symtab_hdr, |
4079 | unsigned long r_symndx, bfd_vma r_addend, int tls_type) | |
411e1bfb AM |
4080 | { |
4081 | struct got_entry **local_got_ents = elf_local_got_ents (abfd); | |
e7b938ca | 4082 | char *local_got_tls_masks; |
411e1bfb AM |
4083 | |
4084 | if (local_got_ents == NULL) | |
4085 | { | |
4086 | bfd_size_type size = symtab_hdr->sh_info; | |
4087 | ||
e7b938ca | 4088 | size *= sizeof (*local_got_ents) + sizeof (*local_got_tls_masks); |
4ce794b7 | 4089 | local_got_ents = bfd_zalloc (abfd, size); |
411e1bfb AM |
4090 | if (local_got_ents == NULL) |
4091 | return FALSE; | |
4092 | elf_local_got_ents (abfd) = local_got_ents; | |
4093 | } | |
4094 | ||
4095 | if ((tls_type & TLS_EXPLICIT) == 0) | |
4096 | { | |
4097 | struct got_entry *ent; | |
4098 | ||
4099 | for (ent = local_got_ents[r_symndx]; ent != NULL; ent = ent->next) | |
e717da7e AM |
4100 | if (ent->addend == r_addend |
4101 | && ent->owner == abfd | |
4102 | && ent->tls_type == tls_type) | |
411e1bfb AM |
4103 | break; |
4104 | if (ent == NULL) | |
4105 | { | |
4106 | bfd_size_type amt = sizeof (*ent); | |
4ce794b7 | 4107 | ent = bfd_alloc (abfd, amt); |
411e1bfb AM |
4108 | if (ent == NULL) |
4109 | return FALSE; | |
4110 | ent->next = local_got_ents[r_symndx]; | |
4111 | ent->addend = r_addend; | |
e717da7e | 4112 | ent->owner = abfd; |
411e1bfb AM |
4113 | ent->tls_type = tls_type; |
4114 | ent->got.refcount = 0; | |
4115 | local_got_ents[r_symndx] = ent; | |
4116 | } | |
4117 | ent->got.refcount += 1; | |
4118 | } | |
4119 | ||
e7b938ca AM |
4120 | local_got_tls_masks = (char *) (local_got_ents + symtab_hdr->sh_info); |
4121 | local_got_tls_masks[r_symndx] |= tls_type; | |
411e1bfb | 4122 | return TRUE; |
65f38f15 AM |
4123 | } |
4124 | ||
411e1bfb | 4125 | static bfd_boolean |
4ce794b7 | 4126 | update_plt_info (bfd *abfd, struct ppc_link_hash_entry *eh, bfd_vma addend) |
1e2f5b6e | 4127 | { |
411e1bfb | 4128 | struct plt_entry *ent; |
1e2f5b6e | 4129 | |
411e1bfb AM |
4130 | for (ent = eh->elf.plt.plist; ent != NULL; ent = ent->next) |
4131 | if (ent->addend == addend) | |
4132 | break; | |
4133 | if (ent == NULL) | |
1e2f5b6e | 4134 | { |
411e1bfb | 4135 | bfd_size_type amt = sizeof (*ent); |
4ce794b7 | 4136 | ent = bfd_alloc (abfd, amt); |
411e1bfb AM |
4137 | if (ent == NULL) |
4138 | return FALSE; | |
4139 | ent->next = eh->elf.plt.plist; | |
4140 | ent->addend = addend; | |
4141 | ent->plt.refcount = 0; | |
4142 | eh->elf.plt.plist = ent; | |
1e2f5b6e | 4143 | } |
411e1bfb AM |
4144 | ent->plt.refcount += 1; |
4145 | eh->elf.elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT; | |
4146 | eh->is_func = 1; | |
b34976b6 | 4147 | return TRUE; |
1e2f5b6e AM |
4148 | } |
4149 | ||
5bd4f169 | 4150 | /* Look through the relocs for a section during the first phase, and |
65f38f15 | 4151 | calculate needed space in the global offset table, procedure |
5d1634d7 | 4152 | linkage table, and dynamic reloc sections. */ |
5bd4f169 | 4153 | |
b34976b6 | 4154 | static bfd_boolean |
4ce794b7 AM |
4155 | ppc64_elf_check_relocs (bfd *abfd, struct bfd_link_info *info, |
4156 | asection *sec, const Elf_Internal_Rela *relocs) | |
5bd4f169 | 4157 | { |
65f38f15 | 4158 | struct ppc_link_hash_table *htab; |
5bd4f169 AM |
4159 | Elf_Internal_Shdr *symtab_hdr; |
4160 | struct elf_link_hash_entry **sym_hashes, **sym_hashes_end; | |
4161 | const Elf_Internal_Rela *rel; | |
4162 | const Elf_Internal_Rela *rel_end; | |
5bd4f169 | 4163 | asection *sreloc; |
1e2f5b6e | 4164 | asection **opd_sym_map; |
5bd4f169 | 4165 | |
1049f94e | 4166 | if (info->relocatable) |
b34976b6 | 4167 | return TRUE; |
5bd4f169 | 4168 | |
680a3378 AM |
4169 | /* Don't do anything special with non-loaded, non-alloced sections. |
4170 | In particular, any relocs in such sections should not affect GOT | |
4171 | and PLT reference counting (ie. we don't allow them to create GOT | |
4172 | or PLT entries), there's no possibility or desire to optimize TLS | |
4173 | relocs, and there's not much point in propagating relocs to shared | |
4174 | libs that the dynamic linker won't relocate. */ | |
4175 | if ((sec->flags & SEC_ALLOC) == 0) | |
4176 | return TRUE; | |
4177 | ||
65f38f15 | 4178 | htab = ppc_hash_table (info); |
5bd4f169 | 4179 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
5bd4f169 AM |
4180 | |
4181 | sym_hashes = elf_sym_hashes (abfd); | |
4182 | sym_hashes_end = (sym_hashes | |
1e2f5b6e AM |
4183 | + symtab_hdr->sh_size / sizeof (Elf64_External_Sym) |
4184 | - symtab_hdr->sh_info); | |
5bd4f169 AM |
4185 | |
4186 | sreloc = NULL; | |
1e2f5b6e AM |
4187 | opd_sym_map = NULL; |
4188 | if (strcmp (bfd_get_section_name (abfd, sec), ".opd") == 0) | |
4189 | { | |
4190 | /* Garbage collection needs some extra help with .opd sections. | |
4191 | We don't want to necessarily keep everything referenced by | |
4192 | relocs in .opd, as that would keep all functions. Instead, | |
4193 | if we reference an .opd symbol (a function descriptor), we | |
4194 | want to keep the function code symbol's section. This is | |
4195 | easy for global symbols, but for local syms we need to keep | |
4196 | information about the associated function section. Later, if | |
4197 | edit_opd deletes entries, we'll use this array to adjust | |
4198 | local syms in .opd. */ | |
4199 | union opd_info { | |
4200 | asection *func_section; | |
4201 | long entry_adjust; | |
4202 | }; | |
4203 | bfd_size_type amt; | |
4204 | ||
3f764659 | 4205 | amt = sec->size * sizeof (union opd_info) / 8; |
4ce794b7 | 4206 | opd_sym_map = bfd_zalloc (abfd, amt); |
1e2f5b6e | 4207 | if (opd_sym_map == NULL) |
b34976b6 | 4208 | return FALSE; |
f0abc2a1 | 4209 | ppc64_elf_section_data (sec)->opd.func_sec = opd_sym_map; |
1e2f5b6e | 4210 | } |
5bd4f169 | 4211 | |
82bd7b59 AM |
4212 | if (htab->sfpr == NULL |
4213 | && !create_linkage_sections (htab->elf.dynobj, info)) | |
b34976b6 | 4214 | return FALSE; |
82bd7b59 | 4215 | |
5bd4f169 AM |
4216 | rel_end = relocs + sec->reloc_count; |
4217 | for (rel = relocs; rel < rel_end; rel++) | |
4218 | { | |
4219 | unsigned long r_symndx; | |
4220 | struct elf_link_hash_entry *h; | |
04c9666a | 4221 | enum elf_ppc64_reloc_type r_type; |
411e1bfb | 4222 | int tls_type = 0; |
5bd4f169 AM |
4223 | |
4224 | r_symndx = ELF64_R_SYM (rel->r_info); | |
4225 | if (r_symndx < symtab_hdr->sh_info) | |
4226 | h = NULL; | |
4227 | else | |
4228 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
4229 | ||
4ce794b7 | 4230 | r_type = ELF64_R_TYPE (rel->r_info); |
a33d1f77 | 4231 | switch (r_type) |
5bd4f169 | 4232 | { |
411e1bfb AM |
4233 | case R_PPC64_GOT_TLSLD16: |
4234 | case R_PPC64_GOT_TLSLD16_LO: | |
4235 | case R_PPC64_GOT_TLSLD16_HI: | |
4236 | case R_PPC64_GOT_TLSLD16_HA: | |
e717da7e | 4237 | ppc64_tlsld_got (abfd)->refcount += 1; |
951fd09b | 4238 | tls_type = TLS_TLS | TLS_LD; |
411e1bfb AM |
4239 | goto dogottls; |
4240 | ||
4241 | case R_PPC64_GOT_TLSGD16: | |
4242 | case R_PPC64_GOT_TLSGD16_LO: | |
4243 | case R_PPC64_GOT_TLSGD16_HI: | |
4244 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b | 4245 | tls_type = TLS_TLS | TLS_GD; |
411e1bfb AM |
4246 | goto dogottls; |
4247 | ||
4248 | case R_PPC64_GOT_TPREL16_DS: | |
4249 | case R_PPC64_GOT_TPREL16_LO_DS: | |
4250 | case R_PPC64_GOT_TPREL16_HI: | |
4251 | case R_PPC64_GOT_TPREL16_HA: | |
4252 | if (info->shared) | |
4253 | info->flags |= DF_STATIC_TLS; | |
4254 | tls_type = TLS_TLS | TLS_TPREL; | |
4255 | goto dogottls; | |
4256 | ||
4257 | case R_PPC64_GOT_DTPREL16_DS: | |
4258 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
4259 | case R_PPC64_GOT_DTPREL16_HI: | |
4260 | case R_PPC64_GOT_DTPREL16_HA: | |
4261 | tls_type = TLS_TLS | TLS_DTPREL; | |
4262 | dogottls: | |
4263 | sec->has_tls_reloc = 1; | |
4264 | /* Fall thru */ | |
4265 | ||
5bd4f169 | 4266 | case R_PPC64_GOT16: |
5bd4f169 | 4267 | case R_PPC64_GOT16_DS: |
65f38f15 AM |
4268 | case R_PPC64_GOT16_HA: |
4269 | case R_PPC64_GOT16_HI: | |
4270 | case R_PPC64_GOT16_LO: | |
5bd4f169 | 4271 | case R_PPC64_GOT16_LO_DS: |
65f38f15 | 4272 | /* This symbol requires a global offset table entry. */ |
ad8e1ba5 | 4273 | sec->has_gp_reloc = 1; |
e717da7e AM |
4274 | if (ppc64_elf_tdata (abfd)->got == NULL |
4275 | && !create_got_section (abfd, info)) | |
b34976b6 | 4276 | return FALSE; |
5bd4f169 AM |
4277 | |
4278 | if (h != NULL) | |
4279 | { | |
411e1bfb AM |
4280 | struct ppc_link_hash_entry *eh; |
4281 | struct got_entry *ent; | |
65f38f15 | 4282 | |
411e1bfb AM |
4283 | eh = (struct ppc_link_hash_entry *) h; |
4284 | for (ent = eh->elf.got.glist; ent != NULL; ent = ent->next) | |
4285 | if (ent->addend == rel->r_addend | |
e717da7e | 4286 | && ent->owner == abfd |
411e1bfb AM |
4287 | && ent->tls_type == tls_type) |
4288 | break; | |
4289 | if (ent == NULL) | |
5bd4f169 | 4290 | { |
411e1bfb | 4291 | bfd_size_type amt = sizeof (*ent); |
4ce794b7 | 4292 | ent = bfd_alloc (abfd, amt); |
411e1bfb | 4293 | if (ent == NULL) |
b34976b6 | 4294 | return FALSE; |
411e1bfb AM |
4295 | ent->next = eh->elf.got.glist; |
4296 | ent->addend = rel->r_addend; | |
e717da7e | 4297 | ent->owner = abfd; |
411e1bfb AM |
4298 | ent->tls_type = tls_type; |
4299 | ent->got.refcount = 0; | |
4300 | eh->elf.got.glist = ent; | |
5bd4f169 | 4301 | } |
411e1bfb | 4302 | ent->got.refcount += 1; |
e7b938ca | 4303 | eh->tls_mask |= tls_type; |
5bd4f169 | 4304 | } |
411e1bfb AM |
4305 | else |
4306 | /* This is a global offset table entry for a local symbol. */ | |
4307 | if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
4308 | rel->r_addend, tls_type)) | |
4309 | return FALSE; | |
5bd4f169 AM |
4310 | break; |
4311 | ||
5bd4f169 | 4312 | case R_PPC64_PLT16_HA: |
65f38f15 AM |
4313 | case R_PPC64_PLT16_HI: |
4314 | case R_PPC64_PLT16_LO: | |
4315 | case R_PPC64_PLT32: | |
4316 | case R_PPC64_PLT64: | |
5bd4f169 | 4317 | /* This symbol requires a procedure linkage table entry. We |
3fad3c7c AM |
4318 | actually build the entry in adjust_dynamic_symbol, |
4319 | because this might be a case of linking PIC code without | |
4320 | linking in any dynamic objects, in which case we don't | |
4321 | need to generate a procedure linkage table after all. */ | |
5bd4f169 AM |
4322 | if (h == NULL) |
4323 | { | |
4324 | /* It does not make sense to have a procedure linkage | |
3fad3c7c | 4325 | table entry for a local symbol. */ |
5bd4f169 | 4326 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 4327 | return FALSE; |
5bd4f169 | 4328 | } |
411e1bfb AM |
4329 | else |
4330 | if (!update_plt_info (abfd, (struct ppc_link_hash_entry *) h, | |
4331 | rel->r_addend)) | |
4332 | return FALSE; | |
5bd4f169 AM |
4333 | break; |
4334 | ||
4335 | /* The following relocations don't need to propagate the | |
4336 | relocation if linking a shared object since they are | |
4337 | section relative. */ | |
4338 | case R_PPC64_SECTOFF: | |
4339 | case R_PPC64_SECTOFF_LO: | |
4340 | case R_PPC64_SECTOFF_HI: | |
4341 | case R_PPC64_SECTOFF_HA: | |
4342 | case R_PPC64_SECTOFF_DS: | |
4343 | case R_PPC64_SECTOFF_LO_DS: | |
411e1bfb AM |
4344 | case R_PPC64_DTPREL16: |
4345 | case R_PPC64_DTPREL16_LO: | |
4346 | case R_PPC64_DTPREL16_HI: | |
4347 | case R_PPC64_DTPREL16_HA: | |
4348 | case R_PPC64_DTPREL16_DS: | |
4349 | case R_PPC64_DTPREL16_LO_DS: | |
4350 | case R_PPC64_DTPREL16_HIGHER: | |
4351 | case R_PPC64_DTPREL16_HIGHERA: | |
4352 | case R_PPC64_DTPREL16_HIGHEST: | |
4353 | case R_PPC64_DTPREL16_HIGHESTA: | |
5bd4f169 AM |
4354 | break; |
4355 | ||
ad8e1ba5 AM |
4356 | /* Nor do these. */ |
4357 | case R_PPC64_TOC16: | |
4358 | case R_PPC64_TOC16_LO: | |
4359 | case R_PPC64_TOC16_HI: | |
4360 | case R_PPC64_TOC16_HA: | |
4361 | case R_PPC64_TOC16_DS: | |
4362 | case R_PPC64_TOC16_LO_DS: | |
4363 | sec->has_gp_reloc = 1; | |
4364 | break; | |
4365 | ||
5bd4f169 AM |
4366 | /* This relocation describes the C++ object vtable hierarchy. |
4367 | Reconstruct it for later use during GC. */ | |
4368 | case R_PPC64_GNU_VTINHERIT: | |
c152c796 | 4369 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) |
b34976b6 | 4370 | return FALSE; |
5bd4f169 AM |
4371 | break; |
4372 | ||
4373 | /* This relocation describes which C++ vtable entries are actually | |
4374 | used. Record for later use during GC. */ | |
4375 | case R_PPC64_GNU_VTENTRY: | |
c152c796 | 4376 | if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) |
b34976b6 | 4377 | return FALSE; |
5bd4f169 AM |
4378 | break; |
4379 | ||
721956f4 AM |
4380 | case R_PPC64_REL14: |
4381 | case R_PPC64_REL14_BRTAKEN: | |
4382 | case R_PPC64_REL14_BRNTAKEN: | |
4383 | htab->has_14bit_branch = 1; | |
4384 | /* Fall through. */ | |
4385 | ||
5d1634d7 | 4386 | case R_PPC64_REL24: |
8387904d | 4387 | if (h != NULL) |
5d1634d7 AM |
4388 | { |
4389 | /* We may need a .plt entry if the function this reloc | |
4390 | refers to is in a shared lib. */ | |
411e1bfb AM |
4391 | if (!update_plt_info (abfd, (struct ppc_link_hash_entry *) h, |
4392 | rel->r_addend)) | |
4393 | return FALSE; | |
8387904d AM |
4394 | if (h == &htab->tls_get_addr->elf |
4395 | || h == &htab->tls_get_addr_fd->elf) | |
411e1bfb | 4396 | sec->has_tls_reloc = 1; |
8387904d AM |
4397 | else if (htab->tls_get_addr == NULL |
4398 | && !strncmp (h->root.root.string, ".__tls_get_addr", 15) | |
a48ebf4d AM |
4399 | && (h->root.root.string[15] == 0 |
4400 | || h->root.root.string[15] == '@')) | |
411e1bfb | 4401 | { |
8387904d AM |
4402 | htab->tls_get_addr = (struct ppc_link_hash_entry *) h; |
4403 | sec->has_tls_reloc = 1; | |
4404 | } | |
4405 | else if (htab->tls_get_addr_fd == NULL | |
4406 | && !strncmp (h->root.root.string, "__tls_get_addr", 14) | |
4407 | && (h->root.root.string[14] == 0 | |
4408 | || h->root.root.string[14] == '@')) | |
4409 | { | |
4410 | htab->tls_get_addr_fd = (struct ppc_link_hash_entry *) h; | |
411e1bfb AM |
4411 | sec->has_tls_reloc = 1; |
4412 | } | |
4413 | } | |
4414 | break; | |
4415 | ||
4416 | case R_PPC64_TPREL64: | |
4417 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_TPREL; | |
4418 | if (info->shared) | |
4419 | info->flags |= DF_STATIC_TLS; | |
4420 | goto dotlstoc; | |
4421 | ||
4422 | case R_PPC64_DTPMOD64: | |
4423 | if (rel + 1 < rel_end | |
4424 | && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64) | |
4425 | && rel[1].r_offset == rel->r_offset + 8) | |
951fd09b | 4426 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_GD; |
411e1bfb | 4427 | else |
951fd09b | 4428 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_LD; |
411e1bfb AM |
4429 | goto dotlstoc; |
4430 | ||
4431 | case R_PPC64_DTPREL64: | |
4432 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_DTPREL; | |
4433 | if (rel != relocs | |
4434 | && rel[-1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPMOD64) | |
4435 | && rel[-1].r_offset == rel->r_offset - 8) | |
4436 | /* This is the second reloc of a dtpmod, dtprel pair. | |
4437 | Don't mark with TLS_DTPREL. */ | |
4438 | goto dodyn; | |
4439 | ||
4440 | dotlstoc: | |
4441 | sec->has_tls_reloc = 1; | |
4442 | if (h != NULL) | |
4443 | { | |
4444 | struct ppc_link_hash_entry *eh; | |
4445 | eh = (struct ppc_link_hash_entry *) h; | |
e7b938ca | 4446 | eh->tls_mask |= tls_type; |
411e1bfb AM |
4447 | } |
4448 | else | |
4449 | if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
4450 | rel->r_addend, tls_type)) | |
4451 | return FALSE; | |
4452 | ||
4453 | if (ppc64_elf_section_data (sec)->t_symndx == NULL) | |
4454 | { | |
e7b938ca | 4455 | /* One extra to simplify get_tls_mask. */ |
eea6121a | 4456 | bfd_size_type amt = sec->size * sizeof (unsigned) / 8 + 1; |
4ce794b7 | 4457 | ppc64_elf_section_data (sec)->t_symndx = bfd_zalloc (abfd, amt); |
411e1bfb AM |
4458 | if (ppc64_elf_section_data (sec)->t_symndx == NULL) |
4459 | return FALSE; | |
4460 | } | |
4461 | BFD_ASSERT (rel->r_offset % 8 == 0); | |
4462 | ppc64_elf_section_data (sec)->t_symndx[rel->r_offset / 8] = r_symndx; | |
951fd09b AM |
4463 | |
4464 | /* Mark the second slot of a GD or LD entry. | |
4465 | -1 to indicate GD and -2 to indicate LD. */ | |
4466 | if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_GD)) | |
4467 | ppc64_elf_section_data (sec)->t_symndx[rel->r_offset / 8 + 1] = -1; | |
4468 | else if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_LD)) | |
4469 | ppc64_elf_section_data (sec)->t_symndx[rel->r_offset / 8 + 1] = -2; | |
411e1bfb AM |
4470 | goto dodyn; |
4471 | ||
4472 | case R_PPC64_TPREL16: | |
4473 | case R_PPC64_TPREL16_LO: | |
4474 | case R_PPC64_TPREL16_HI: | |
4475 | case R_PPC64_TPREL16_HA: | |
4476 | case R_PPC64_TPREL16_DS: | |
4477 | case R_PPC64_TPREL16_LO_DS: | |
4478 | case R_PPC64_TPREL16_HIGHER: | |
4479 | case R_PPC64_TPREL16_HIGHERA: | |
4480 | case R_PPC64_TPREL16_HIGHEST: | |
4481 | case R_PPC64_TPREL16_HIGHESTA: | |
4482 | if (info->shared) | |
4483 | { | |
4484 | info->flags |= DF_STATIC_TLS; | |
4485 | goto dodyn; | |
5d1634d7 AM |
4486 | } |
4487 | break; | |
4488 | ||
e86ce104 | 4489 | case R_PPC64_ADDR64: |
1e2f5b6e | 4490 | if (opd_sym_map != NULL |
1e2f5b6e | 4491 | && rel + 1 < rel_end |
4ce794b7 | 4492 | && ELF64_R_TYPE ((rel + 1)->r_info) == R_PPC64_TOC) |
1e2f5b6e | 4493 | { |
8387904d AM |
4494 | if (h != NULL) |
4495 | { | |
4496 | if (h->root.root.string[0] == '.' | |
4497 | && h->root.root.string[1] != 0 | |
4498 | && get_fdh ((struct ppc_link_hash_entry *) h, htab)) | |
4499 | ; | |
4500 | else | |
4501 | ((struct ppc_link_hash_entry *) h)->is_func = 1; | |
4502 | } | |
4503 | else | |
4504 | { | |
4505 | asection *s; | |
1e2f5b6e | 4506 | |
8387904d AM |
4507 | s = bfd_section_from_r_symndx (abfd, &htab->sym_sec, sec, |
4508 | r_symndx); | |
4509 | if (s == NULL) | |
4510 | return FALSE; | |
4511 | else if (s != sec) | |
3f764659 | 4512 | opd_sym_map[rel->r_offset / 8] = s; |
8387904d | 4513 | } |
1e2f5b6e | 4514 | } |
e86ce104 AM |
4515 | /* Fall through. */ |
4516 | ||
04c9666a | 4517 | case R_PPC64_REL30: |
5bd4f169 | 4518 | case R_PPC64_REL32: |
04c9666a | 4519 | case R_PPC64_REL64: |
65f38f15 AM |
4520 | case R_PPC64_ADDR14: |
4521 | case R_PPC64_ADDR14_BRNTAKEN: | |
4522 | case R_PPC64_ADDR14_BRTAKEN: | |
4523 | case R_PPC64_ADDR16: | |
4524 | case R_PPC64_ADDR16_DS: | |
4525 | case R_PPC64_ADDR16_HA: | |
4526 | case R_PPC64_ADDR16_HI: | |
4527 | case R_PPC64_ADDR16_HIGHER: | |
4528 | case R_PPC64_ADDR16_HIGHERA: | |
4529 | case R_PPC64_ADDR16_HIGHEST: | |
4530 | case R_PPC64_ADDR16_HIGHESTA: | |
4531 | case R_PPC64_ADDR16_LO: | |
4532 | case R_PPC64_ADDR16_LO_DS: | |
4533 | case R_PPC64_ADDR24: | |
65f38f15 | 4534 | case R_PPC64_ADDR32: |
65f38f15 AM |
4535 | case R_PPC64_UADDR16: |
4536 | case R_PPC64_UADDR32: | |
4537 | case R_PPC64_UADDR64: | |
5bd4f169 | 4538 | case R_PPC64_TOC: |
81848ca0 AM |
4539 | if (h != NULL && !info->shared) |
4540 | /* We may need a copy reloc. */ | |
4541 | h->elf_link_hash_flags |= ELF_LINK_NON_GOT_REF; | |
4542 | ||
41bd81ab | 4543 | /* Don't propagate .opd relocs. */ |
1e2f5b6e | 4544 | if (NO_OPD_RELOCS && opd_sym_map != NULL) |
e86ce104 | 4545 | break; |
e86ce104 | 4546 | |
65f38f15 AM |
4547 | /* If we are creating a shared library, and this is a reloc |
4548 | against a global symbol, or a non PC relative reloc | |
4549 | against a local symbol, then we need to copy the reloc | |
4550 | into the shared library. However, if we are linking with | |
4551 | -Bsymbolic, we do not need to copy a reloc against a | |
4552 | global symbol which is defined in an object we are | |
4553 | including in the link (i.e., DEF_REGULAR is set). At | |
4554 | this point we have not seen all the input files, so it is | |
4555 | possible that DEF_REGULAR is not set now but will be set | |
4556 | later (it is never cleared). In case of a weak definition, | |
4557 | DEF_REGULAR may be cleared later by a strong definition in | |
4558 | a shared library. We account for that possibility below by | |
f4656909 | 4559 | storing information in the dyn_relocs field of the hash |
65f38f15 AM |
4560 | table entry. A similar situation occurs when creating |
4561 | shared libraries and symbol visibility changes render the | |
4562 | symbol local. | |
4563 | ||
4564 | If on the other hand, we are creating an executable, we | |
4565 | may need to keep relocations for symbols satisfied by a | |
4566 | dynamic library if we manage to avoid copy relocs for the | |
4567 | symbol. */ | |
411e1bfb | 4568 | dodyn: |
65f38f15 | 4569 | if ((info->shared |
411e1bfb | 4570 | && (MUST_BE_DYN_RELOC (r_type) |
65f38f15 AM |
4571 | || (h != NULL |
4572 | && (! info->symbolic | |
4573 | || h->root.type == bfd_link_hash_defweak | |
4574 | || (h->elf_link_hash_flags | |
4575 | & ELF_LINK_HASH_DEF_REGULAR) == 0)))) | |
f4656909 AM |
4576 | || (ELIMINATE_COPY_RELOCS |
4577 | && !info->shared | |
65f38f15 AM |
4578 | && h != NULL |
4579 | && (h->root.type == bfd_link_hash_defweak | |
4580 | || (h->elf_link_hash_flags | |
4581 | & ELF_LINK_HASH_DEF_REGULAR) == 0))) | |
5bd4f169 | 4582 | { |
ec338859 AM |
4583 | struct ppc_dyn_relocs *p; |
4584 | struct ppc_dyn_relocs **head; | |
4585 | ||
65f38f15 AM |
4586 | /* We must copy these reloc types into the output file. |
4587 | Create a reloc section in dynobj and make room for | |
4588 | this reloc. */ | |
5bd4f169 AM |
4589 | if (sreloc == NULL) |
4590 | { | |
4591 | const char *name; | |
65f38f15 | 4592 | bfd *dynobj; |
5bd4f169 AM |
4593 | |
4594 | name = (bfd_elf_string_from_elf_section | |
4595 | (abfd, | |
4596 | elf_elfheader (abfd)->e_shstrndx, | |
4597 | elf_section_data (sec)->rel_hdr.sh_name)); | |
4598 | if (name == NULL) | |
b34976b6 | 4599 | return FALSE; |
5bd4f169 | 4600 | |
65f38f15 AM |
4601 | if (strncmp (name, ".rela", 5) != 0 |
4602 | || strcmp (bfd_get_section_name (abfd, sec), | |
4603 | name + 5) != 0) | |
4604 | { | |
4605 | (*_bfd_error_handler) | |
d003868e AM |
4606 | (_("%B: bad relocation section name `%s\'"), |
4607 | abfd, name); | |
5d1634d7 | 4608 | bfd_set_error (bfd_error_bad_value); |
65f38f15 AM |
4609 | } |
4610 | ||
65f38f15 | 4611 | dynobj = htab->elf.dynobj; |
5bd4f169 AM |
4612 | sreloc = bfd_get_section_by_name (dynobj, name); |
4613 | if (sreloc == NULL) | |
4614 | { | |
4615 | flagword flags; | |
4616 | ||
4617 | sreloc = bfd_make_section (dynobj, name); | |
4618 | flags = (SEC_HAS_CONTENTS | SEC_READONLY | |
4619 | | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
4620 | if ((sec->flags & SEC_ALLOC) != 0) | |
4621 | flags |= SEC_ALLOC | SEC_LOAD; | |
4622 | if (sreloc == NULL | |
4623 | || ! bfd_set_section_flags (dynobj, sreloc, flags) | |
65f38f15 | 4624 | || ! bfd_set_section_alignment (dynobj, sreloc, 3)) |
b34976b6 | 4625 | return FALSE; |
5bd4f169 | 4626 | } |
65f38f15 | 4627 | elf_section_data (sec)->sreloc = sreloc; |
5bd4f169 AM |
4628 | } |
4629 | ||
65f38f15 AM |
4630 | /* If this is a global symbol, we count the number of |
4631 | relocations we need for this symbol. */ | |
4632 | if (h != NULL) | |
4633 | { | |
ec338859 | 4634 | head = &((struct ppc_link_hash_entry *) h)->dyn_relocs; |
65f38f15 AM |
4635 | } |
4636 | else | |
4637 | { | |
ec338859 AM |
4638 | /* Track dynamic relocs needed for local syms too. |
4639 | We really need local syms available to do this | |
4640 | easily. Oh well. */ | |
4641 | ||
4642 | asection *s; | |
4643 | s = bfd_section_from_r_symndx (abfd, &htab->sym_sec, | |
4644 | sec, r_symndx); | |
4645 | if (s == NULL) | |
b34976b6 | 4646 | return FALSE; |
ec338859 AM |
4647 | |
4648 | head = ((struct ppc_dyn_relocs **) | |
4649 | &elf_section_data (s)->local_dynrel); | |
65f38f15 | 4650 | } |
ec338859 AM |
4651 | |
4652 | p = *head; | |
4653 | if (p == NULL || p->sec != sec) | |
4654 | { | |
4ce794b7 | 4655 | p = bfd_alloc (htab->elf.dynobj, sizeof *p); |
ec338859 | 4656 | if (p == NULL) |
b34976b6 | 4657 | return FALSE; |
ec338859 AM |
4658 | p->next = *head; |
4659 | *head = p; | |
4660 | p->sec = sec; | |
4661 | p->count = 0; | |
4662 | p->pc_count = 0; | |
4663 | } | |
4664 | ||
4665 | p->count += 1; | |
411e1bfb | 4666 | if (!MUST_BE_DYN_RELOC (r_type)) |
ec338859 | 4667 | p->pc_count += 1; |
65f38f15 | 4668 | } |
5bd4f169 | 4669 | break; |
65f38f15 AM |
4670 | |
4671 | default: | |
96e0dda4 | 4672 | break; |
5bd4f169 AM |
4673 | } |
4674 | } | |
4675 | ||
b34976b6 | 4676 | return TRUE; |
5bd4f169 AM |
4677 | } |
4678 | ||
8387904d AM |
4679 | /* OFFSET in OPD_SEC specifies a function descriptor. Return the address |
4680 | of the code entry point, and its section. */ | |
4681 | ||
4682 | static bfd_vma | |
4683 | opd_entry_value (asection *opd_sec, | |
4684 | bfd_vma offset, | |
4685 | asection **code_sec, | |
4686 | bfd_vma *code_off) | |
4687 | { | |
4688 | bfd *opd_bfd = opd_sec->owner; | |
4689 | Elf_Internal_Rela *lo, *hi, *look; | |
4690 | ||
4691 | /* Go find the opd reloc at the sym address. */ | |
4692 | lo = _bfd_elf_link_read_relocs (opd_bfd, opd_sec, NULL, NULL, TRUE); | |
4693 | BFD_ASSERT (lo != NULL); | |
4694 | hi = lo + opd_sec->reloc_count - 1; /* ignore last reloc */ | |
4695 | ||
4696 | while (lo < hi) | |
4697 | { | |
4698 | look = lo + (hi - lo) / 2; | |
4699 | if (look->r_offset < offset) | |
4700 | lo = look + 1; | |
4701 | else if (look->r_offset > offset) | |
4702 | hi = look; | |
4703 | else | |
4704 | { | |
4705 | Elf_Internal_Shdr *symtab_hdr = &elf_tdata (opd_bfd)->symtab_hdr; | |
4706 | if (ELF64_R_TYPE (look->r_info) == R_PPC64_ADDR64 | |
4707 | && ELF64_R_TYPE ((look + 1)->r_info) == R_PPC64_TOC) | |
4708 | { | |
4709 | unsigned long symndx = ELF64_R_SYM (look->r_info); | |
4710 | bfd_vma val; | |
4711 | asection *sec; | |
4712 | ||
4713 | if (symndx < symtab_hdr->sh_info) | |
4714 | { | |
4715 | Elf_Internal_Sym *sym; | |
4716 | ||
4717 | sym = (Elf_Internal_Sym *) symtab_hdr->contents; | |
4718 | if (sym == NULL) | |
4719 | { | |
4720 | sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr, | |
4721 | symtab_hdr->sh_info, | |
4722 | 0, NULL, NULL, NULL); | |
4723 | if (sym == NULL) | |
4724 | return (bfd_vma) -1; | |
4725 | symtab_hdr->contents = (bfd_byte *) sym; | |
4726 | } | |
4727 | ||
4728 | sym += symndx; | |
4729 | val = sym->st_value; | |
4730 | sec = NULL; | |
4731 | if ((sym->st_shndx != SHN_UNDEF | |
4732 | && sym->st_shndx < SHN_LORESERVE) | |
4733 | || sym->st_shndx > SHN_HIRESERVE) | |
4734 | sec = bfd_section_from_elf_index (opd_bfd, sym->st_shndx); | |
4735 | BFD_ASSERT ((sec->flags & SEC_MERGE) == 0); | |
4736 | } | |
4737 | else | |
4738 | { | |
4739 | struct elf_link_hash_entry **sym_hashes; | |
4740 | struct elf_link_hash_entry *rh; | |
4741 | ||
4742 | sym_hashes = elf_sym_hashes (opd_bfd); | |
4743 | rh = sym_hashes[symndx - symtab_hdr->sh_info]; | |
4744 | while (rh->root.type == bfd_link_hash_indirect | |
4745 | || rh->root.type == bfd_link_hash_warning) | |
4746 | rh = ((struct elf_link_hash_entry *) rh->root.u.i.link); | |
4747 | BFD_ASSERT (rh->root.type == bfd_link_hash_defined | |
4748 | || rh->root.type == bfd_link_hash_defweak); | |
4749 | val = rh->root.u.def.value; | |
4750 | sec = rh->root.u.def.section; | |
4751 | } | |
4752 | val += look->r_addend; | |
4753 | if (code_off != NULL) | |
4754 | *code_off = val; | |
4755 | if (code_sec != NULL) | |
4756 | *code_sec = sec; | |
4757 | if (sec != NULL && sec->output_section != NULL) | |
4758 | val += sec->output_section->vma + sec->output_offset; | |
4759 | return val; | |
4760 | } | |
4761 | break; | |
4762 | } | |
4763 | } | |
4764 | return (bfd_vma) -1; | |
4765 | } | |
4766 | ||
5bd4f169 AM |
4767 | /* Return the section that should be marked against GC for a given |
4768 | relocation. */ | |
4769 | ||
4770 | static asection * | |
4ce794b7 | 4771 | ppc64_elf_gc_mark_hook (asection *sec, |
ccfa59ea | 4772 | struct bfd_link_info *info, |
4ce794b7 AM |
4773 | Elf_Internal_Rela *rel, |
4774 | struct elf_link_hash_entry *h, | |
4775 | Elf_Internal_Sym *sym) | |
5bd4f169 | 4776 | { |
ccfa59ea AM |
4777 | asection *rsec; |
4778 | ||
4779 | /* First mark all our entry sym sections. */ | |
4780 | if (info->gc_sym_list != NULL) | |
4781 | { | |
4782 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
4783 | struct bfd_sym_chain *sym = info->gc_sym_list; | |
4784 | ||
4785 | info->gc_sym_list = NULL; | |
4786 | do | |
4787 | { | |
4788 | struct ppc_link_hash_entry *eh; | |
4789 | ||
4790 | eh = (struct ppc_link_hash_entry *) | |
4791 | elf_link_hash_lookup (&htab->elf, sym->name, FALSE, FALSE, FALSE); | |
4792 | if (eh == NULL) | |
4793 | continue; | |
4794 | if (eh->elf.root.type != bfd_link_hash_defined | |
4795 | && eh->elf.root.type != bfd_link_hash_defweak) | |
4796 | continue; | |
4797 | ||
4798 | if (eh->is_func_descriptor) | |
4799 | rsec = eh->oh->elf.root.u.def.section; | |
8387904d AM |
4800 | else if (get_opd_info (eh->elf.root.u.def.section) != NULL |
4801 | && opd_entry_value (eh->elf.root.u.def.section, | |
4802 | eh->elf.root.u.def.value, | |
4803 | &rsec, NULL) != (bfd_vma) -1) | |
4804 | ; | |
ccfa59ea AM |
4805 | else |
4806 | continue; | |
4807 | ||
4808 | if (!rsec->gc_mark) | |
4809 | _bfd_elf_gc_mark (info, rsec, ppc64_elf_gc_mark_hook); | |
4810 | ||
4811 | rsec = eh->elf.root.u.def.section; | |
4812 | if (!rsec->gc_mark) | |
4813 | _bfd_elf_gc_mark (info, rsec, ppc64_elf_gc_mark_hook); | |
4814 | ||
4815 | sym = sym->next; | |
4816 | } | |
4817 | while (sym != NULL); | |
4818 | } | |
4819 | ||
4820 | /* Syms return NULL if we're marking .opd, so we avoid marking all | |
4821 | function sections, as all functions are referenced in .opd. */ | |
4822 | rsec = NULL; | |
4823 | if (get_opd_info (sec) != NULL) | |
4824 | return rsec; | |
1e2f5b6e | 4825 | |
5bd4f169 AM |
4826 | if (h != NULL) |
4827 | { | |
04c9666a | 4828 | enum elf_ppc64_reloc_type r_type; |
ccfa59ea | 4829 | struct ppc_link_hash_entry *eh; |
a33d1f77 | 4830 | |
4ce794b7 | 4831 | r_type = ELF64_R_TYPE (rel->r_info); |
a33d1f77 | 4832 | switch (r_type) |
5bd4f169 AM |
4833 | { |
4834 | case R_PPC64_GNU_VTINHERIT: | |
4835 | case R_PPC64_GNU_VTENTRY: | |
4836 | break; | |
4837 | ||
4838 | default: | |
4839 | switch (h->root.type) | |
4840 | { | |
4841 | case bfd_link_hash_defined: | |
4842 | case bfd_link_hash_defweak: | |
ccfa59ea AM |
4843 | eh = (struct ppc_link_hash_entry *) h; |
4844 | if (eh->oh != NULL && eh->oh->is_func_descriptor) | |
4845 | eh = eh->oh; | |
1e2f5b6e AM |
4846 | |
4847 | /* Function descriptor syms cause the associated | |
4848 | function code sym section to be marked. */ | |
ccfa59ea AM |
4849 | if (eh->is_func_descriptor) |
4850 | { | |
4851 | /* They also mark their opd section. */ | |
4852 | if (!eh->elf.root.u.def.section->gc_mark) | |
4853 | _bfd_elf_gc_mark (info, eh->elf.root.u.def.section, | |
4854 | ppc64_elf_gc_mark_hook); | |
4855 | ||
4856 | rsec = eh->oh->elf.root.u.def.section; | |
4857 | } | |
8387904d AM |
4858 | else if (get_opd_info (eh->elf.root.u.def.section) != NULL |
4859 | && opd_entry_value (eh->elf.root.u.def.section, | |
4860 | eh->elf.root.u.def.value, | |
4861 | &rsec, NULL) != (bfd_vma) -1) | |
4862 | { | |
4863 | if (!eh->elf.root.u.def.section->gc_mark) | |
4864 | _bfd_elf_gc_mark (info, eh->elf.root.u.def.section, | |
4865 | ppc64_elf_gc_mark_hook); | |
4866 | } | |
ccfa59ea | 4867 | else |
1e2f5b6e AM |
4868 | rsec = h->root.u.def.section; |
4869 | break; | |
5bd4f169 AM |
4870 | |
4871 | case bfd_link_hash_common: | |
1e2f5b6e AM |
4872 | rsec = h->root.u.c.p->section; |
4873 | break; | |
5bd4f169 AM |
4874 | |
4875 | default: | |
4876 | break; | |
4877 | } | |
4878 | } | |
4879 | } | |
4880 | else | |
4881 | { | |
1e2f5b6e AM |
4882 | asection **opd_sym_section; |
4883 | ||
4884 | rsec = bfd_section_from_elf_index (sec->owner, sym->st_shndx); | |
ccfa59ea | 4885 | opd_sym_section = get_opd_info (rsec); |
1e2f5b6e | 4886 | if (opd_sym_section != NULL) |
ccfa59ea AM |
4887 | { |
4888 | if (!rsec->gc_mark) | |
4889 | _bfd_elf_gc_mark (info, rsec, ppc64_elf_gc_mark_hook); | |
4890 | ||
3f764659 | 4891 | rsec = opd_sym_section[sym->st_value / 8]; |
ccfa59ea | 4892 | } |
5bd4f169 AM |
4893 | } |
4894 | ||
1e2f5b6e | 4895 | return rsec; |
5bd4f169 AM |
4896 | } |
4897 | ||
65f38f15 AM |
4898 | /* Update the .got, .plt. and dynamic reloc reference counts for the |
4899 | section being removed. */ | |
5bd4f169 | 4900 | |
b34976b6 | 4901 | static bfd_boolean |
4ce794b7 AM |
4902 | ppc64_elf_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info, |
4903 | asection *sec, const Elf_Internal_Rela *relocs) | |
5bd4f169 | 4904 | { |
411e1bfb | 4905 | struct ppc_link_hash_table *htab; |
5bd4f169 AM |
4906 | Elf_Internal_Shdr *symtab_hdr; |
4907 | struct elf_link_hash_entry **sym_hashes; | |
411e1bfb | 4908 | struct got_entry **local_got_ents; |
5bd4f169 | 4909 | const Elf_Internal_Rela *rel, *relend; |
5bd4f169 | 4910 | |
680a3378 AM |
4911 | if ((sec->flags & SEC_ALLOC) == 0) |
4912 | return TRUE; | |
4913 | ||
ec338859 AM |
4914 | elf_section_data (sec)->local_dynrel = NULL; |
4915 | ||
411e1bfb | 4916 | htab = ppc_hash_table (info); |
5bd4f169 AM |
4917 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
4918 | sym_hashes = elf_sym_hashes (abfd); | |
411e1bfb | 4919 | local_got_ents = elf_local_got_ents (abfd); |
5bd4f169 AM |
4920 | |
4921 | relend = relocs + sec->reloc_count; | |
4922 | for (rel = relocs; rel < relend; rel++) | |
a33d1f77 AM |
4923 | { |
4924 | unsigned long r_symndx; | |
04c9666a | 4925 | enum elf_ppc64_reloc_type r_type; |
58ac9f71 | 4926 | struct elf_link_hash_entry *h = NULL; |
411e1bfb | 4927 | char tls_type = 0; |
5bd4f169 | 4928 | |
a33d1f77 | 4929 | r_symndx = ELF64_R_SYM (rel->r_info); |
4ce794b7 | 4930 | r_type = ELF64_R_TYPE (rel->r_info); |
58ac9f71 AM |
4931 | if (r_symndx >= symtab_hdr->sh_info) |
4932 | { | |
4933 | struct ppc_link_hash_entry *eh; | |
4934 | struct ppc_dyn_relocs **pp; | |
4935 | struct ppc_dyn_relocs *p; | |
4936 | ||
4937 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
4938 | eh = (struct ppc_link_hash_entry *) h; | |
4939 | ||
4940 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next) | |
4941 | if (p->sec == sec) | |
4942 | { | |
4943 | /* Everything must go for SEC. */ | |
4944 | *pp = p->next; | |
4945 | break; | |
4946 | } | |
4947 | } | |
4948 | ||
a33d1f77 AM |
4949 | switch (r_type) |
4950 | { | |
411e1bfb AM |
4951 | case R_PPC64_GOT_TLSLD16: |
4952 | case R_PPC64_GOT_TLSLD16_LO: | |
4953 | case R_PPC64_GOT_TLSLD16_HI: | |
4954 | case R_PPC64_GOT_TLSLD16_HA: | |
e717da7e | 4955 | ppc64_tlsld_got (abfd)->refcount -= 1; |
951fd09b | 4956 | tls_type = TLS_TLS | TLS_LD; |
411e1bfb AM |
4957 | goto dogot; |
4958 | ||
4959 | case R_PPC64_GOT_TLSGD16: | |
4960 | case R_PPC64_GOT_TLSGD16_LO: | |
4961 | case R_PPC64_GOT_TLSGD16_HI: | |
4962 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b | 4963 | tls_type = TLS_TLS | TLS_GD; |
411e1bfb AM |
4964 | goto dogot; |
4965 | ||
4966 | case R_PPC64_GOT_TPREL16_DS: | |
4967 | case R_PPC64_GOT_TPREL16_LO_DS: | |
4968 | case R_PPC64_GOT_TPREL16_HI: | |
4969 | case R_PPC64_GOT_TPREL16_HA: | |
4970 | tls_type = TLS_TLS | TLS_TPREL; | |
4971 | goto dogot; | |
4972 | ||
4973 | case R_PPC64_GOT_DTPREL16_DS: | |
4974 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
4975 | case R_PPC64_GOT_DTPREL16_HI: | |
4976 | case R_PPC64_GOT_DTPREL16_HA: | |
4977 | tls_type = TLS_TLS | TLS_DTPREL; | |
4978 | goto dogot; | |
4979 | ||
a33d1f77 AM |
4980 | case R_PPC64_GOT16: |
4981 | case R_PPC64_GOT16_DS: | |
4982 | case R_PPC64_GOT16_HA: | |
4983 | case R_PPC64_GOT16_HI: | |
4984 | case R_PPC64_GOT16_LO: | |
4985 | case R_PPC64_GOT16_LO_DS: | |
411e1bfb AM |
4986 | dogot: |
4987 | { | |
4988 | struct got_entry *ent; | |
4989 | ||
58ac9f71 AM |
4990 | if (h != NULL) |
4991 | ent = h->got.glist; | |
411e1bfb AM |
4992 | else |
4993 | ent = local_got_ents[r_symndx]; | |
4994 | ||
4995 | for (; ent != NULL; ent = ent->next) | |
4996 | if (ent->addend == rel->r_addend | |
e717da7e | 4997 | && ent->owner == abfd |
411e1bfb AM |
4998 | && ent->tls_type == tls_type) |
4999 | break; | |
5000 | if (ent == NULL) | |
5001 | abort (); | |
5002 | if (ent->got.refcount > 0) | |
5003 | ent->got.refcount -= 1; | |
5004 | } | |
a33d1f77 | 5005 | break; |
65f38f15 | 5006 | |
a33d1f77 AM |
5007 | case R_PPC64_PLT16_HA: |
5008 | case R_PPC64_PLT16_HI: | |
5009 | case R_PPC64_PLT16_LO: | |
5010 | case R_PPC64_PLT32: | |
5011 | case R_PPC64_PLT64: | |
721956f4 AM |
5012 | case R_PPC64_REL14: |
5013 | case R_PPC64_REL14_BRNTAKEN: | |
5014 | case R_PPC64_REL14_BRTAKEN: | |
5d1634d7 | 5015 | case R_PPC64_REL24: |
58ac9f71 | 5016 | if (h != NULL) |
5d1634d7 | 5017 | { |
411e1bfb AM |
5018 | struct plt_entry *ent; |
5019 | ||
411e1bfb AM |
5020 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) |
5021 | if (ent->addend == rel->r_addend) | |
5022 | break; | |
5023 | if (ent == NULL) | |
5024 | abort (); | |
5025 | if (ent->plt.refcount > 0) | |
5026 | ent->plt.refcount -= 1; | |
5d1634d7 | 5027 | } |
e86ce104 | 5028 | break; |
5d1634d7 | 5029 | |
a33d1f77 AM |
5030 | default: |
5031 | break; | |
5032 | } | |
5033 | } | |
b34976b6 | 5034 | return TRUE; |
5bd4f169 AM |
5035 | } |
5036 | ||
deb0e272 AM |
5037 | /* The maximum size of .sfpr. */ |
5038 | #define SFPR_MAX (218*4) | |
5039 | ||
5040 | struct sfpr_def_parms | |
5041 | { | |
699733f6 AM |
5042 | const char name[12]; |
5043 | unsigned char lo, hi; | |
deb0e272 AM |
5044 | bfd_byte * (*write_ent) (bfd *, bfd_byte *, int); |
5045 | bfd_byte * (*write_tail) (bfd *, bfd_byte *, int); | |
5046 | }; | |
5047 | ||
5048 | /* Auto-generate _save*, _rest* functions in .sfpr. */ | |
5049 | ||
5050 | static unsigned int | |
5051 | sfpr_define (struct bfd_link_info *info, const struct sfpr_def_parms *parm) | |
5052 | { | |
5053 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
5054 | unsigned int i; | |
5055 | size_t len = strlen (parm->name); | |
5056 | bfd_boolean writing = FALSE; | |
699733f6 | 5057 | char sym[16]; |
deb0e272 AM |
5058 | |
5059 | memcpy (sym, parm->name, len); | |
5060 | sym[len + 2] = 0; | |
5061 | ||
5062 | for (i = parm->lo; i <= parm->hi; i++) | |
5063 | { | |
5064 | struct elf_link_hash_entry *h; | |
5065 | ||
5066 | sym[len + 0] = i / 10 + '0'; | |
5067 | sym[len + 1] = i % 10 + '0'; | |
5068 | h = elf_link_hash_lookup (&htab->elf, sym, FALSE, FALSE, TRUE); | |
5069 | if (h != NULL | |
5070 | && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0) | |
5071 | { | |
5072 | h->root.type = bfd_link_hash_defined; | |
5073 | h->root.u.def.section = htab->sfpr; | |
5074 | h->root.u.def.value = htab->sfpr->size; | |
5075 | h->type = STT_FUNC; | |
5076 | h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR; | |
5077 | _bfd_elf_link_hash_hide_symbol (info, h, TRUE); | |
5078 | writing = TRUE; | |
5079 | if (htab->sfpr->contents == NULL) | |
5080 | { | |
5081 | htab->sfpr->contents = bfd_alloc (htab->elf.dynobj, SFPR_MAX); | |
5082 | if (htab->sfpr->contents == NULL) | |
5083 | return FALSE; | |
5084 | } | |
5085 | } | |
5086 | if (writing) | |
5087 | { | |
5088 | bfd_byte *p = htab->sfpr->contents + htab->sfpr->size; | |
5089 | if (i != parm->hi) | |
5090 | p = (*parm->write_ent) (htab->elf.dynobj, p, i); | |
5091 | else | |
5092 | p = (*parm->write_tail) (htab->elf.dynobj, p, i); | |
5093 | htab->sfpr->size = p - htab->sfpr->contents; | |
5094 | } | |
5095 | } | |
5096 | ||
5097 | return TRUE; | |
5098 | } | |
5099 | ||
5100 | static bfd_byte * | |
5101 | savegpr0 (bfd *abfd, bfd_byte *p, int r) | |
5102 | { | |
5103 | bfd_put_32 (abfd, STD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
5104 | return p + 4; | |
5105 | } | |
5106 | ||
5107 | static bfd_byte * | |
5108 | savegpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
5109 | { | |
5110 | p = savegpr0 (abfd, p, r); | |
5111 | bfd_put_32 (abfd, STD_R0_0R1 + 16, p); | |
5112 | p = p + 4; | |
5113 | bfd_put_32 (abfd, BLR, p); | |
5114 | return p + 4; | |
5115 | } | |
5116 | ||
5117 | static bfd_byte * | |
5118 | restgpr0 (bfd *abfd, bfd_byte *p, int r) | |
5119 | { | |
5120 | bfd_put_32 (abfd, LD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
5121 | return p + 4; | |
5122 | } | |
5123 | ||
5124 | static bfd_byte * | |
5125 | restgpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
5126 | { | |
5127 | bfd_put_32 (abfd, LD_R0_0R1 + 16, p); | |
5128 | p = p + 4; | |
5129 | p = restgpr0 (abfd, p, r); | |
5130 | bfd_put_32 (abfd, MTLR_R0, p); | |
5131 | p = p + 4; | |
5132 | if (r == 29) | |
5133 | { | |
5134 | p = restgpr0 (abfd, p, 30); | |
5135 | p = restgpr0 (abfd, p, 31); | |
5136 | } | |
5137 | bfd_put_32 (abfd, BLR, p); | |
5138 | return p + 4; | |
5139 | } | |
5140 | ||
5141 | static bfd_byte * | |
5142 | savegpr1 (bfd *abfd, bfd_byte *p, int r) | |
5143 | { | |
5144 | bfd_put_32 (abfd, STD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
5145 | return p + 4; | |
5146 | } | |
5147 | ||
5148 | static bfd_byte * | |
5149 | savegpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
5150 | { | |
5151 | p = savegpr1 (abfd, p, r); | |
5152 | bfd_put_32 (abfd, BLR, p); | |
5153 | return p + 4; | |
5154 | } | |
5155 | ||
5156 | static bfd_byte * | |
5157 | restgpr1 (bfd *abfd, bfd_byte *p, int r) | |
5158 | { | |
5159 | bfd_put_32 (abfd, LD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
5160 | return p + 4; | |
5161 | } | |
5162 | ||
5163 | static bfd_byte * | |
5164 | restgpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
5165 | { | |
5166 | p = restgpr1 (abfd, p, r); | |
5167 | bfd_put_32 (abfd, BLR, p); | |
5168 | return p + 4; | |
5169 | } | |
5170 | ||
5171 | static bfd_byte * | |
5172 | savefpr (bfd *abfd, bfd_byte *p, int r) | |
5173 | { | |
5174 | bfd_put_32 (abfd, STFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
5175 | return p + 4; | |
5176 | } | |
5177 | ||
5178 | static bfd_byte * | |
5179 | savefpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
5180 | { | |
5181 | p = savefpr (abfd, p, r); | |
5182 | bfd_put_32 (abfd, STD_R0_0R1 + 16, p); | |
5183 | p = p + 4; | |
5184 | bfd_put_32 (abfd, BLR, p); | |
5185 | return p + 4; | |
5186 | } | |
5187 | ||
5188 | static bfd_byte * | |
5189 | restfpr (bfd *abfd, bfd_byte *p, int r) | |
5190 | { | |
5191 | bfd_put_32 (abfd, LFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
5192 | return p + 4; | |
5193 | } | |
5194 | ||
5195 | static bfd_byte * | |
5196 | restfpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
5197 | { | |
5198 | bfd_put_32 (abfd, LD_R0_0R1 + 16, p); | |
5199 | p = p + 4; | |
5200 | p = restfpr (abfd, p, r); | |
5201 | bfd_put_32 (abfd, MTLR_R0, p); | |
5202 | p = p + 4; | |
5203 | if (r == 29) | |
5204 | { | |
5205 | p = restfpr (abfd, p, 30); | |
5206 | p = restfpr (abfd, p, 31); | |
5207 | } | |
5208 | bfd_put_32 (abfd, BLR, p); | |
5209 | return p + 4; | |
5210 | } | |
5211 | ||
5212 | static bfd_byte * | |
5213 | savefpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
5214 | { | |
5215 | p = savefpr (abfd, p, r); | |
5216 | bfd_put_32 (abfd, BLR, p); | |
5217 | return p + 4; | |
5218 | } | |
5219 | ||
5220 | static bfd_byte * | |
5221 | restfpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
5222 | { | |
5223 | p = restfpr (abfd, p, r); | |
5224 | bfd_put_32 (abfd, BLR, p); | |
5225 | return p + 4; | |
5226 | } | |
5227 | ||
5228 | static bfd_byte * | |
5229 | savevr (bfd *abfd, bfd_byte *p, int r) | |
5230 | { | |
5231 | bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p); | |
5232 | p = p + 4; | |
5233 | bfd_put_32 (abfd, STVX_VR0_R12_R0 + (r << 21), p); | |
5234 | return p + 4; | |
5235 | } | |
5236 | ||
5237 | static bfd_byte * | |
5238 | savevr_tail (bfd *abfd, bfd_byte *p, int r) | |
5239 | { | |
5240 | p = savevr (abfd, p, r); | |
5241 | bfd_put_32 (abfd, BLR, p); | |
5242 | return p + 4; | |
5243 | } | |
5244 | ||
5245 | static bfd_byte * | |
5246 | restvr (bfd *abfd, bfd_byte *p, int r) | |
5247 | { | |
5248 | bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p); | |
5249 | p = p + 4; | |
5250 | bfd_put_32 (abfd, LVX_VR0_R12_R0 + (r << 21), p); | |
5251 | return p + 4; | |
5252 | } | |
5253 | ||
5254 | static bfd_byte * | |
5255 | restvr_tail (bfd *abfd, bfd_byte *p, int r) | |
5256 | { | |
5257 | p = restvr (abfd, p, r); | |
5258 | bfd_put_32 (abfd, BLR, p); | |
5259 | return p + 4; | |
5260 | } | |
5261 | ||
e86ce104 AM |
5262 | /* Called via elf_link_hash_traverse to transfer dynamic linking |
5263 | information on function code symbol entries to their corresponding | |
5264 | function descriptor symbol entries. */ | |
deb0e272 | 5265 | |
b34976b6 | 5266 | static bfd_boolean |
4ce794b7 | 5267 | func_desc_adjust (struct elf_link_hash_entry *h, void *inf) |
5bd4f169 | 5268 | { |
e86ce104 | 5269 | struct bfd_link_info *info; |
65f38f15 | 5270 | struct ppc_link_hash_table *htab; |
411e1bfb | 5271 | struct plt_entry *ent; |
50bc7936 AM |
5272 | struct ppc_link_hash_entry *fh; |
5273 | struct ppc_link_hash_entry *fdh; | |
5274 | bfd_boolean force_local; | |
5bd4f169 | 5275 | |
50bc7936 AM |
5276 | fh = (struct ppc_link_hash_entry *) h; |
5277 | if (fh->elf.root.type == bfd_link_hash_indirect) | |
b34976b6 | 5278 | return TRUE; |
e86ce104 | 5279 | |
50bc7936 AM |
5280 | if (fh->elf.root.type == bfd_link_hash_warning) |
5281 | fh = (struct ppc_link_hash_entry *) fh->elf.root.u.i.link; | |
e92d460e | 5282 | |
4ce794b7 | 5283 | info = inf; |
65f38f15 | 5284 | htab = ppc_hash_table (info); |
5bd4f169 | 5285 | |
c09bdfe5 AM |
5286 | /* Resolve undefined references to dot-symbols as the value |
5287 | in the function descriptor, if we have one in a regular object. | |
5288 | This is to satisfy cases like ".quad .foo". Calls to functions | |
5289 | in dynamic objects are handled elsewhere. */ | |
5290 | if (fh->elf.root.type == bfd_link_hash_undefweak | |
5291 | && fh->was_undefined | |
5292 | && (fh->oh->elf.root.type == bfd_link_hash_defined | |
5293 | || fh->oh->elf.root.type == bfd_link_hash_defweak) | |
5294 | && get_opd_info (fh->oh->elf.root.u.def.section) != NULL | |
5295 | && opd_entry_value (fh->oh->elf.root.u.def.section, | |
5296 | fh->oh->elf.root.u.def.value, | |
5297 | &fh->elf.root.u.def.section, | |
5298 | &fh->elf.root.u.def.value) != (bfd_vma) -1) | |
5299 | { | |
5300 | fh->elf.root.type = fh->oh->elf.root.type; | |
5301 | fh->elf.elf_link_hash_flags |= ELF_LINK_FORCED_LOCAL; | |
5302 | } | |
5303 | ||
e86ce104 AM |
5304 | /* If this is a function code symbol, transfer dynamic linking |
5305 | information to the function descriptor symbol. */ | |
50bc7936 | 5306 | if (!fh->is_func) |
b34976b6 | 5307 | return TRUE; |
e86ce104 | 5308 | |
50bc7936 | 5309 | for (ent = fh->elf.plt.plist; ent != NULL; ent = ent->next) |
411e1bfb AM |
5310 | if (ent->plt.refcount > 0) |
5311 | break; | |
50bc7936 AM |
5312 | if (ent == NULL |
5313 | || fh->elf.root.root.string[0] != '.' | |
5314 | || fh->elf.root.root.string[1] == '\0') | |
5315 | return TRUE; | |
5bd4f169 | 5316 | |
50bc7936 AM |
5317 | /* Find the corresponding function descriptor symbol. Create it |
5318 | as undefined if necessary. */ | |
5bd4f169 | 5319 | |
50bc7936 AM |
5320 | fdh = get_fdh (fh, htab); |
5321 | if (fdh != NULL) | |
5322 | while (fdh->elf.root.type == bfd_link_hash_indirect | |
5323 | || fdh->elf.root.type == bfd_link_hash_warning) | |
5324 | fdh = (struct ppc_link_hash_entry *) fdh->elf.root.u.i.link; | |
5bd4f169 | 5325 | |
50bc7936 AM |
5326 | if (fdh == NULL |
5327 | && info->shared | |
5328 | && (fh->elf.root.type == bfd_link_hash_undefined | |
5329 | || fh->elf.root.type == bfd_link_hash_undefweak)) | |
5330 | { | |
5331 | bfd *abfd; | |
5332 | asymbol *newsym; | |
5333 | struct bfd_link_hash_entry *bh; | |
5334 | ||
5335 | abfd = fh->elf.root.u.undef.abfd; | |
5336 | newsym = bfd_make_empty_symbol (abfd); | |
5337 | newsym->name = fh->elf.root.root.string + 1; | |
5338 | newsym->section = bfd_und_section_ptr; | |
5339 | newsym->value = 0; | |
5340 | newsym->flags = BSF_OBJECT; | |
5341 | if (fh->elf.root.type == bfd_link_hash_undefweak) | |
5342 | newsym->flags |= BSF_WEAK; | |
5343 | ||
5344 | bh = &fdh->elf.root; | |
5345 | if ( !(_bfd_generic_link_add_one_symbol | |
5346 | (info, abfd, newsym->name, newsym->flags, | |
5347 | newsym->section, newsym->value, NULL, FALSE, FALSE, &bh))) | |
648cca2c | 5348 | { |
50bc7936 | 5349 | return FALSE; |
648cca2c | 5350 | } |
50bc7936 AM |
5351 | fdh = (struct ppc_link_hash_entry *) bh; |
5352 | fdh->elf.elf_link_hash_flags &= ~ELF_LINK_NON_ELF; | |
5353 | fdh->elf.size = 24; | |
5354 | fdh->elf.type = STT_OBJECT; | |
5355 | } | |
648cca2c | 5356 | |
50bc7936 AM |
5357 | if (fdh != NULL |
5358 | && (fdh->elf.elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0 | |
5359 | && (info->shared | |
5360 | || (fdh->elf.elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0 | |
5361 | || (fdh->elf.elf_link_hash_flags & ELF_LINK_HASH_REF_DYNAMIC) != 0 | |
5362 | || (fdh->elf.root.type == bfd_link_hash_undefweak | |
5363 | && ELF_ST_VISIBILITY (fdh->elf.other) == STV_DEFAULT))) | |
5364 | { | |
5365 | if (fdh->elf.dynindx == -1) | |
c152c796 | 5366 | if (! bfd_elf_link_record_dynamic_symbol (info, &fdh->elf)) |
50bc7936 AM |
5367 | return FALSE; |
5368 | fdh->elf.elf_link_hash_flags | |
5369 | |= (fh->elf.elf_link_hash_flags & (ELF_LINK_HASH_REF_REGULAR | |
5370 | | ELF_LINK_HASH_REF_DYNAMIC | |
5371 | | ELF_LINK_HASH_REF_REGULAR_NONWEAK | |
5372 | | ELF_LINK_NON_GOT_REF)); | |
5373 | if (ELF_ST_VISIBILITY (fh->elf.other) == STV_DEFAULT) | |
e86ce104 | 5374 | { |
8387904d AM |
5375 | struct plt_entry **ep = &fdh->elf.plt.plist; |
5376 | while (*ep != NULL) | |
5377 | ep = &(*ep)->next; | |
5378 | *ep = fh->elf.plt.plist; | |
5379 | fh->elf.plt.plist = NULL; | |
50bc7936 | 5380 | fdh->elf.elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT; |
e86ce104 | 5381 | } |
50bc7936 | 5382 | fdh->is_func_descriptor = 1; |
34814b9f AM |
5383 | fdh->oh = fh; |
5384 | fh->oh = fdh; | |
e86ce104 AM |
5385 | } |
5386 | ||
50bc7936 AM |
5387 | /* Now that the info is on the function descriptor, clear the |
5388 | function code sym info. Any function code syms for which we | |
5389 | don't have a definition in a regular file, we force local. | |
5390 | This prevents a shared library from exporting syms that have | |
5391 | been imported from another library. Function code syms that | |
5392 | are really in the library we must leave global to prevent the | |
5393 | linker dragging in a definition from a static library. */ | |
5394 | force_local | |
5395 | = (info->shared | |
5396 | && ((fh->elf.elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0 | |
5397 | || fdh == NULL | |
5398 | || (fdh->elf.elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0 | |
5399 | || (fdh->elf.elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0)); | |
5400 | _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local); | |
5401 | ||
b34976b6 | 5402 | return TRUE; |
e86ce104 | 5403 | } |
40b8271b | 5404 | |
e86ce104 | 5405 | /* Called near the start of bfd_elf_size_dynamic_sections. We use |
82bd7b59 AM |
5406 | this hook to a) provide some gcc support functions, and b) transfer |
5407 | dynamic linking information gathered so far on function code symbol | |
5408 | entries, to their corresponding function descriptor symbol entries. */ | |
deb0e272 | 5409 | |
b34976b6 | 5410 | static bfd_boolean |
4ce794b7 AM |
5411 | ppc64_elf_func_desc_adjust (bfd *obfd ATTRIBUTE_UNUSED, |
5412 | struct bfd_link_info *info) | |
e86ce104 AM |
5413 | { |
5414 | struct ppc_link_hash_table *htab; | |
82bd7b59 | 5415 | unsigned int i; |
deb0e272 AM |
5416 | const struct sfpr_def_parms funcs[] = |
5417 | { | |
5418 | { "_savegpr0_", 14, 31, savegpr0, savegpr0_tail }, | |
5419 | { "_restgpr0_", 14, 29, restgpr0, restgpr0_tail }, | |
5420 | { "_restgpr0_", 30, 31, restgpr0, restgpr0_tail }, | |
5421 | { "_savegpr1_", 14, 31, savegpr1, savegpr1_tail }, | |
5422 | { "_restgpr1_", 14, 31, restgpr1, restgpr1_tail }, | |
5423 | { "_savefpr_", 14, 31, savefpr, savefpr0_tail }, | |
5424 | { "_restfpr_", 14, 29, restfpr, restfpr0_tail }, | |
5425 | { "_restfpr_", 30, 31, restfpr, restfpr0_tail }, | |
5426 | { "._savef", 14, 31, savefpr, savefpr1_tail }, | |
5427 | { "._restf", 14, 31, restfpr, restfpr1_tail }, | |
5428 | { "_savevr_", 20, 31, savevr, savevr_tail }, | |
5429 | { "_restvr_", 20, 31, restvr, restvr_tail } | |
5430 | }; | |
e86ce104 AM |
5431 | |
5432 | htab = ppc_hash_table (info); | |
82bd7b59 AM |
5433 | if (htab->sfpr == NULL) |
5434 | /* We don't have any relocs. */ | |
b34976b6 | 5435 | return TRUE; |
82bd7b59 | 5436 | |
deb0e272 AM |
5437 | /* Provide any missing _save* and _rest* functions. */ |
5438 | htab->sfpr->size = 0; | |
5439 | for (i = 0; i < sizeof (funcs) / sizeof (funcs[0]); i++) | |
5440 | if (!sfpr_define (info, &funcs[i])) | |
5441 | return FALSE; | |
82bd7b59 | 5442 | |
4ce794b7 | 5443 | elf_link_hash_traverse (&htab->elf, func_desc_adjust, info); |
805fc799 | 5444 | |
eea6121a | 5445 | if (htab->sfpr->size == 0) |
deb0e272 | 5446 | _bfd_strip_section_from_output (info, htab->sfpr); |
82bd7b59 | 5447 | |
b34976b6 | 5448 | return TRUE; |
e86ce104 AM |
5449 | } |
5450 | ||
5451 | /* Adjust a symbol defined by a dynamic object and referenced by a | |
5452 | regular object. The current definition is in some section of the | |
5453 | dynamic object, but we're not including those sections. We have to | |
5454 | change the definition to something the rest of the link can | |
5455 | understand. */ | |
5456 | ||
b34976b6 | 5457 | static bfd_boolean |
4ce794b7 AM |
5458 | ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info *info, |
5459 | struct elf_link_hash_entry *h) | |
e86ce104 AM |
5460 | { |
5461 | struct ppc_link_hash_table *htab; | |
e86ce104 AM |
5462 | asection *s; |
5463 | unsigned int power_of_two; | |
5464 | ||
5465 | htab = ppc_hash_table (info); | |
5466 | ||
5467 | /* Deal with function syms. */ | |
5468 | if (h->type == STT_FUNC | |
5469 | || (h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0) | |
5470 | { | |
5471 | /* Clear procedure linkage table information for any symbol that | |
5472 | won't need a .plt entry. */ | |
411e1bfb AM |
5473 | struct plt_entry *ent; |
5474 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) | |
5475 | if (ent->plt.refcount > 0) | |
5476 | break; | |
8387904d | 5477 | if (ent == NULL |
9c7a29a3 AM |
5478 | || SYMBOL_CALLS_LOCAL (info, h) |
5479 | || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT | |
5480 | && h->root.type == bfd_link_hash_undefweak)) | |
40b8271b | 5481 | { |
411e1bfb | 5482 | h->plt.plist = NULL; |
40b8271b | 5483 | h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT; |
40b8271b | 5484 | } |
5bd4f169 | 5485 | } |
bbd7ec4a | 5486 | else |
411e1bfb | 5487 | h->plt.plist = NULL; |
5bd4f169 AM |
5488 | |
5489 | /* If this is a weak symbol, and there is a real definition, the | |
5490 | processor independent code will have arranged for us to see the | |
5491 | real definition first, and we can just use the same value. */ | |
5492 | if (h->weakdef != NULL) | |
5493 | { | |
5494 | BFD_ASSERT (h->weakdef->root.type == bfd_link_hash_defined | |
5495 | || h->weakdef->root.type == bfd_link_hash_defweak); | |
5496 | h->root.u.def.section = h->weakdef->root.u.def.section; | |
5497 | h->root.u.def.value = h->weakdef->root.u.def.value; | |
a23b6845 AM |
5498 | if (ELIMINATE_COPY_RELOCS) |
5499 | h->elf_link_hash_flags | |
5500 | = ((h->elf_link_hash_flags & ~ELF_LINK_NON_GOT_REF) | |
5501 | | (h->weakdef->elf_link_hash_flags & ELF_LINK_NON_GOT_REF)); | |
b34976b6 | 5502 | return TRUE; |
5bd4f169 AM |
5503 | } |
5504 | ||
5bd4f169 AM |
5505 | /* If we are creating a shared library, we must presume that the |
5506 | only references to the symbol are via the global offset table. | |
5507 | For such cases we need not do anything here; the relocations will | |
5508 | be handled correctly by relocate_section. */ | |
5509 | if (info->shared) | |
b34976b6 | 5510 | return TRUE; |
5bd4f169 | 5511 | |
65f38f15 AM |
5512 | /* If there are no references to this symbol that do not use the |
5513 | GOT, we don't need to generate a copy reloc. */ | |
5514 | if ((h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0) | |
b34976b6 | 5515 | return TRUE; |
65f38f15 | 5516 | |
f4656909 | 5517 | if (ELIMINATE_COPY_RELOCS) |
65f38f15 | 5518 | { |
f4656909 AM |
5519 | struct ppc_link_hash_entry * eh; |
5520 | struct ppc_dyn_relocs *p; | |
65f38f15 | 5521 | |
f4656909 AM |
5522 | eh = (struct ppc_link_hash_entry *) h; |
5523 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
5524 | { | |
5525 | s = p->sec->output_section; | |
5526 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
5527 | break; | |
5528 | } | |
5529 | ||
5530 | /* If we didn't find any dynamic relocs in read-only sections, then | |
5531 | we'll be keeping the dynamic relocs and avoiding the copy reloc. */ | |
5532 | if (p == NULL) | |
5533 | { | |
5534 | h->elf_link_hash_flags &= ~ELF_LINK_NON_GOT_REF; | |
5535 | return TRUE; | |
5536 | } | |
65f38f15 AM |
5537 | } |
5538 | ||
5d35169e | 5539 | if (h->plt.plist != NULL) |
97b639ba AM |
5540 | { |
5541 | /* We should never get here, but unfortunately there are versions | |
5542 | of gcc out there that improperly (for this ABI) put initialized | |
5543 | function pointers, vtable refs and suchlike in read-only | |
5544 | sections. Allow them to proceed, but warn that this might | |
5545 | break at runtime. */ | |
5546 | (*_bfd_error_handler) | |
5547 | (_("copy reloc against `%s' requires lazy plt linking; " | |
5548 | "avoid setting LD_BIND_NOW=1 or upgrade gcc"), | |
5549 | h->root.root.string); | |
5550 | } | |
5d35169e AM |
5551 | |
5552 | /* This is a reference to a symbol defined by a dynamic object which | |
5553 | is not a function. */ | |
5554 | ||
5bd4f169 AM |
5555 | /* We must allocate the symbol in our .dynbss section, which will |
5556 | become part of the .bss section of the executable. There will be | |
5557 | an entry for this symbol in the .dynsym section. The dynamic | |
5558 | object will contain position independent code, so all references | |
5559 | from the dynamic object to this symbol will go through the global | |
5560 | offset table. The dynamic linker will use the .dynsym entry to | |
5561 | determine the address it must put in the global offset table, so | |
5562 | both the dynamic object and the regular object will refer to the | |
5563 | same memory location for the variable. */ | |
5bd4f169 | 5564 | |
04c9666a AM |
5565 | /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker |
5566 | to copy the initial value out of the dynamic object and into the | |
5bd4f169 AM |
5567 | runtime process image. We need to remember the offset into the |
5568 | .rela.bss section we are going to use. */ | |
5569 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0) | |
5570 | { | |
eea6121a | 5571 | htab->relbss->size += sizeof (Elf64_External_Rela); |
5bd4f169 AM |
5572 | h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_COPY; |
5573 | } | |
5574 | ||
5575 | /* We need to figure out the alignment required for this symbol. I | |
5576 | have no idea how ELF linkers handle this. */ | |
5577 | power_of_two = bfd_log2 (h->size); | |
5578 | if (power_of_two > 4) | |
5579 | power_of_two = 4; | |
5580 | ||
5581 | /* Apply the required alignment. */ | |
4ce794b7 | 5582 | s = htab->dynbss; |
eea6121a | 5583 | s->size = BFD_ALIGN (s->size, (bfd_size_type) (1 << power_of_two)); |
65f38f15 | 5584 | if (power_of_two > bfd_get_section_alignment (htab->elf.dynobj, s)) |
5bd4f169 | 5585 | { |
65f38f15 | 5586 | if (! bfd_set_section_alignment (htab->elf.dynobj, s, power_of_two)) |
b34976b6 | 5587 | return FALSE; |
5bd4f169 AM |
5588 | } |
5589 | ||
5590 | /* Define the symbol as being at this point in the section. */ | |
5591 | h->root.u.def.section = s; | |
eea6121a | 5592 | h->root.u.def.value = s->size; |
5bd4f169 AM |
5593 | |
5594 | /* Increment the section size to make room for the symbol. */ | |
eea6121a | 5595 | s->size += h->size; |
5bd4f169 | 5596 | |
b34976b6 | 5597 | return TRUE; |
5bd4f169 AM |
5598 | } |
5599 | ||
e86ce104 AM |
5600 | /* If given a function descriptor symbol, hide both the function code |
5601 | sym and the descriptor. */ | |
5602 | static void | |
4ce794b7 AM |
5603 | ppc64_elf_hide_symbol (struct bfd_link_info *info, |
5604 | struct elf_link_hash_entry *h, | |
5605 | bfd_boolean force_local) | |
e86ce104 | 5606 | { |
34814b9f | 5607 | struct ppc_link_hash_entry *eh; |
e86ce104 AM |
5608 | _bfd_elf_link_hash_hide_symbol (info, h, force_local); |
5609 | ||
34814b9f AM |
5610 | eh = (struct ppc_link_hash_entry *) h; |
5611 | if (eh->is_func_descriptor) | |
e86ce104 | 5612 | { |
34814b9f | 5613 | struct ppc_link_hash_entry *fh = eh->oh; |
e86ce104 | 5614 | |
721956f4 | 5615 | if (fh == NULL) |
d1329ca3 AM |
5616 | { |
5617 | const char *p, *q; | |
5618 | struct ppc_link_hash_table *htab; | |
5619 | char save; | |
5620 | ||
5621 | /* We aren't supposed to use alloca in BFD because on | |
5622 | systems which do not have alloca the version in libiberty | |
5623 | calls xmalloc, which might cause the program to crash | |
5624 | when it runs out of memory. This function doesn't have a | |
5625 | return status, so there's no way to gracefully return an | |
5626 | error. So cheat. We know that string[-1] can be safely | |
34814b9f AM |
5627 | accessed; It's either a string in an ELF string table, |
5628 | or allocated in an objalloc structure. */ | |
d1329ca3 | 5629 | |
34814b9f | 5630 | p = eh->elf.root.root.string - 1; |
d1329ca3 AM |
5631 | save = *p; |
5632 | *(char *) p = '.'; | |
5633 | htab = ppc_hash_table (info); | |
34814b9f AM |
5634 | fh = (struct ppc_link_hash_entry *) |
5635 | elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE); | |
d1329ca3 AM |
5636 | *(char *) p = save; |
5637 | ||
5638 | /* Unfortunately, if it so happens that the string we were | |
5639 | looking for was allocated immediately before this string, | |
5640 | then we overwrote the string terminator. That's the only | |
5641 | reason the lookup should fail. */ | |
5642 | if (fh == NULL) | |
5643 | { | |
34814b9f AM |
5644 | q = eh->elf.root.root.string + strlen (eh->elf.root.root.string); |
5645 | while (q >= eh->elf.root.root.string && *q == *p) | |
d1329ca3 | 5646 | --q, --p; |
34814b9f AM |
5647 | if (q < eh->elf.root.root.string && *p == '.') |
5648 | fh = (struct ppc_link_hash_entry *) | |
5649 | elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE); | |
d1329ca3 AM |
5650 | } |
5651 | if (fh != NULL) | |
5652 | { | |
34814b9f AM |
5653 | eh->oh = fh; |
5654 | fh->oh = eh; | |
d1329ca3 AM |
5655 | } |
5656 | } | |
e86ce104 | 5657 | if (fh != NULL) |
34814b9f | 5658 | _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local); |
e86ce104 AM |
5659 | } |
5660 | } | |
5661 | ||
411e1bfb | 5662 | static bfd_boolean |
8843416a AM |
5663 | get_sym_h (struct elf_link_hash_entry **hp, |
5664 | Elf_Internal_Sym **symp, | |
5665 | asection **symsecp, | |
5666 | char **tls_maskp, | |
5667 | Elf_Internal_Sym **locsymsp, | |
5668 | unsigned long r_symndx, | |
5669 | bfd *ibfd) | |
411e1bfb AM |
5670 | { |
5671 | Elf_Internal_Shdr *symtab_hdr = &elf_tdata (ibfd)->symtab_hdr; | |
5672 | ||
5673 | if (r_symndx >= symtab_hdr->sh_info) | |
5674 | { | |
5675 | struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd); | |
5676 | struct elf_link_hash_entry *h; | |
5677 | ||
5678 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
5679 | while (h->root.type == bfd_link_hash_indirect | |
5680 | || h->root.type == bfd_link_hash_warning) | |
5681 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
5682 | ||
5683 | if (hp != NULL) | |
5684 | *hp = h; | |
5685 | ||
5686 | if (symp != NULL) | |
5687 | *symp = NULL; | |
5688 | ||
5689 | if (symsecp != NULL) | |
5690 | { | |
5691 | asection *symsec = NULL; | |
5692 | if (h->root.type == bfd_link_hash_defined | |
5693 | || h->root.type == bfd_link_hash_defweak) | |
5694 | symsec = h->root.u.def.section; | |
5695 | *symsecp = symsec; | |
5696 | } | |
5697 | ||
e7b938ca | 5698 | if (tls_maskp != NULL) |
411e1bfb AM |
5699 | { |
5700 | struct ppc_link_hash_entry *eh; | |
5701 | ||
5702 | eh = (struct ppc_link_hash_entry *) h; | |
e7b938ca | 5703 | *tls_maskp = &eh->tls_mask; |
411e1bfb AM |
5704 | } |
5705 | } | |
5706 | else | |
5707 | { | |
5708 | Elf_Internal_Sym *sym; | |
5709 | Elf_Internal_Sym *locsyms = *locsymsp; | |
5710 | ||
5711 | if (locsyms == NULL) | |
5712 | { | |
5713 | locsyms = (Elf_Internal_Sym *) symtab_hdr->contents; | |
5714 | if (locsyms == NULL) | |
5715 | locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr, | |
5716 | symtab_hdr->sh_info, | |
5717 | 0, NULL, NULL, NULL); | |
5718 | if (locsyms == NULL) | |
5719 | return FALSE; | |
5720 | *locsymsp = locsyms; | |
5721 | } | |
5722 | sym = locsyms + r_symndx; | |
5723 | ||
5724 | if (hp != NULL) | |
5725 | *hp = NULL; | |
5726 | ||
5727 | if (symp != NULL) | |
5728 | *symp = sym; | |
5729 | ||
5730 | if (symsecp != NULL) | |
5731 | { | |
5732 | asection *symsec = NULL; | |
5733 | if ((sym->st_shndx != SHN_UNDEF | |
5734 | && sym->st_shndx < SHN_LORESERVE) | |
5735 | || sym->st_shndx > SHN_HIRESERVE) | |
5736 | symsec = bfd_section_from_elf_index (ibfd, sym->st_shndx); | |
5737 | *symsecp = symsec; | |
5738 | } | |
5739 | ||
e7b938ca | 5740 | if (tls_maskp != NULL) |
411e1bfb AM |
5741 | { |
5742 | struct got_entry **lgot_ents; | |
e7b938ca | 5743 | char *tls_mask; |
411e1bfb | 5744 | |
e7b938ca | 5745 | tls_mask = NULL; |
411e1bfb AM |
5746 | lgot_ents = elf_local_got_ents (ibfd); |
5747 | if (lgot_ents != NULL) | |
5748 | { | |
e7b938ca AM |
5749 | char *lgot_masks = (char *) (lgot_ents + symtab_hdr->sh_info); |
5750 | tls_mask = &lgot_masks[r_symndx]; | |
411e1bfb | 5751 | } |
e7b938ca | 5752 | *tls_maskp = tls_mask; |
411e1bfb AM |
5753 | } |
5754 | } | |
5755 | return TRUE; | |
5756 | } | |
5757 | ||
e7b938ca | 5758 | /* Returns TLS_MASKP for the given REL symbol. Function return is 0 on |
951fd09b | 5759 | error, 2 on a toc GD type suitable for optimization, 3 on a toc LD |
ad8e1ba5 | 5760 | type suitable for optimization, and 1 otherwise. */ |
951fd09b AM |
5761 | |
5762 | static int | |
0d4792f7 AM |
5763 | get_tls_mask (char **tls_maskp, unsigned long *toc_symndx, |
5764 | Elf_Internal_Sym **locsymsp, | |
4ce794b7 | 5765 | const Elf_Internal_Rela *rel, bfd *ibfd) |
411e1bfb AM |
5766 | { |
5767 | unsigned long r_symndx; | |
0d4792f7 | 5768 | int next_r; |
411e1bfb AM |
5769 | struct elf_link_hash_entry *h; |
5770 | Elf_Internal_Sym *sym; | |
5771 | asection *sec; | |
5772 | bfd_vma off; | |
5773 | ||
5774 | r_symndx = ELF64_R_SYM (rel->r_info); | |
e7b938ca | 5775 | if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd)) |
951fd09b | 5776 | return 0; |
411e1bfb | 5777 | |
e7b938ca | 5778 | if ((*tls_maskp != NULL && **tls_maskp != 0) |
411e1bfb AM |
5779 | || sec == NULL |
5780 | || ppc64_elf_section_data (sec)->t_symndx == NULL) | |
951fd09b | 5781 | return 1; |
411e1bfb AM |
5782 | |
5783 | /* Look inside a TOC section too. */ | |
5784 | if (h != NULL) | |
5785 | { | |
5786 | BFD_ASSERT (h->root.type == bfd_link_hash_defined); | |
5787 | off = h->root.u.def.value; | |
5788 | } | |
5789 | else | |
5790 | off = sym->st_value; | |
5791 | off += rel->r_addend; | |
5792 | BFD_ASSERT (off % 8 == 0); | |
5793 | r_symndx = ppc64_elf_section_data (sec)->t_symndx[off / 8]; | |
951fd09b | 5794 | next_r = ppc64_elf_section_data (sec)->t_symndx[off / 8 + 1]; |
e7b938ca | 5795 | if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd)) |
951fd09b | 5796 | return 0; |
0d4792f7 AM |
5797 | if (toc_symndx != NULL) |
5798 | *toc_symndx = r_symndx; | |
5799 | if ((h == NULL | |
5800 | || ((h->root.type == bfd_link_hash_defined | |
5801 | || h->root.type == bfd_link_hash_defweak) | |
5802 | && !(h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC))) | |
5803 | && (next_r == -1 || next_r == -2)) | |
5804 | return 1 - next_r; | |
951fd09b | 5805 | return 1; |
411e1bfb AM |
5806 | } |
5807 | ||
754021d0 | 5808 | /* Adjust all global syms defined in opd sections. In gcc generated |
8387904d | 5809 | code for the old ABI, these will already have been done. */ |
754021d0 AM |
5810 | |
5811 | static bfd_boolean | |
5812 | adjust_opd_syms (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED) | |
5813 | { | |
5814 | struct ppc_link_hash_entry *eh; | |
5815 | asection *sym_sec; | |
5816 | long *opd_adjust; | |
5817 | ||
5818 | if (h->root.type == bfd_link_hash_indirect) | |
5819 | return TRUE; | |
5820 | ||
5821 | if (h->root.type == bfd_link_hash_warning) | |
5822 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
5823 | ||
5824 | if (h->root.type != bfd_link_hash_defined | |
5825 | && h->root.type != bfd_link_hash_defweak) | |
5826 | return TRUE; | |
5827 | ||
5828 | eh = (struct ppc_link_hash_entry *) h; | |
5829 | if (eh->adjust_done) | |
5830 | return TRUE; | |
5831 | ||
5832 | sym_sec = eh->elf.root.u.def.section; | |
4025353c AM |
5833 | opd_adjust = get_opd_info (sym_sec); |
5834 | if (opd_adjust != NULL) | |
754021d0 | 5835 | { |
3f764659 | 5836 | long adjust = opd_adjust[eh->elf.root.u.def.value / 8]; |
4025353c AM |
5837 | if (adjust == -1) |
5838 | { | |
5839 | /* This entry has been deleted. */ | |
81688140 AM |
5840 | asection *dsec = ppc64_elf_tdata (sym_sec->owner)->deleted_section; |
5841 | if (dsec == NULL) | |
5842 | { | |
5843 | for (dsec = sym_sec->owner->sections; dsec; dsec = dsec->next) | |
5844 | if (elf_discarded_section (dsec)) | |
5845 | { | |
5846 | ppc64_elf_tdata (sym_sec->owner)->deleted_section = dsec; | |
5847 | break; | |
5848 | } | |
5849 | } | |
4025353c | 5850 | eh->elf.root.u.def.value = 0; |
81688140 | 5851 | eh->elf.root.u.def.section = dsec; |
4025353c AM |
5852 | } |
5853 | else | |
5854 | eh->elf.root.u.def.value += adjust; | |
754021d0 AM |
5855 | eh->adjust_done = 1; |
5856 | } | |
5857 | return TRUE; | |
5858 | } | |
5859 | ||
5860 | /* Remove unused Official Procedure Descriptor entries. Currently we | |
5861 | only remove those associated with functions in discarded link-once | |
5862 | sections, or weakly defined functions that have been overridden. It | |
5863 | would be possible to remove many more entries for statically linked | |
5864 | applications. */ | |
5865 | ||
b34976b6 | 5866 | bfd_boolean |
3f764659 JJ |
5867 | ppc64_elf_edit_opd (bfd *obfd, struct bfd_link_info *info, |
5868 | bfd_boolean non_overlapping) | |
1e2f5b6e AM |
5869 | { |
5870 | bfd *ibfd; | |
754021d0 | 5871 | bfd_boolean some_edited = FALSE; |
3f764659 | 5872 | asection *need_pad = NULL; |
1e2f5b6e | 5873 | |
411e1bfb | 5874 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) |
1e2f5b6e AM |
5875 | { |
5876 | asection *sec; | |
5877 | Elf_Internal_Rela *relstart, *rel, *relend; | |
5878 | Elf_Internal_Shdr *symtab_hdr; | |
6cdc0ccc | 5879 | Elf_Internal_Sym *local_syms; |
1e2f5b6e AM |
5880 | struct elf_link_hash_entry **sym_hashes; |
5881 | bfd_vma offset; | |
d6fe2dc1 | 5882 | bfd_size_type amt; |
4025353c | 5883 | long *opd_adjust; |
3f764659 JJ |
5884 | bfd_boolean need_edit, add_aux_fields; |
5885 | bfd_size_type cnt_16b = 0; | |
1e2f5b6e AM |
5886 | |
5887 | sec = bfd_get_section_by_name (ibfd, ".opd"); | |
5888 | if (sec == NULL) | |
5889 | continue; | |
5890 | ||
3f764659 | 5891 | amt = sec->size * sizeof (long) / 8; |
4025353c AM |
5892 | opd_adjust = get_opd_info (sec); |
5893 | if (opd_adjust == NULL) | |
d6fe2dc1 AM |
5894 | { |
5895 | /* Must be a ld -r link. ie. check_relocs hasn't been | |
5896 | called. */ | |
4025353c AM |
5897 | opd_adjust = bfd_zalloc (obfd, amt); |
5898 | ppc64_elf_section_data (sec)->opd.adjust = opd_adjust; | |
d6fe2dc1 | 5899 | } |
4025353c | 5900 | memset (opd_adjust, 0, amt); |
1e2f5b6e AM |
5901 | |
5902 | if (sec->output_section == bfd_abs_section_ptr) | |
5903 | continue; | |
5904 | ||
5905 | /* Look through the section relocs. */ | |
5906 | if ((sec->flags & SEC_RELOC) == 0 || sec->reloc_count == 0) | |
5907 | continue; | |
5908 | ||
6cdc0ccc | 5909 | local_syms = NULL; |
1e2f5b6e AM |
5910 | symtab_hdr = &elf_tdata (ibfd)->symtab_hdr; |
5911 | sym_hashes = elf_sym_hashes (ibfd); | |
5912 | ||
5913 | /* Read the relocations. */ | |
4ce794b7 | 5914 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, |
45d6a902 | 5915 | info->keep_memory); |
1e2f5b6e | 5916 | if (relstart == NULL) |
b34976b6 | 5917 | return FALSE; |
1e2f5b6e AM |
5918 | |
5919 | /* First run through the relocs to check they are sane, and to | |
5920 | determine whether we need to edit this opd section. */ | |
b34976b6 | 5921 | need_edit = FALSE; |
3f764659 | 5922 | need_pad = sec; |
1e2f5b6e AM |
5923 | offset = 0; |
5924 | relend = relstart + sec->reloc_count; | |
50bc7936 | 5925 | for (rel = relstart; rel < relend; ) |
1e2f5b6e | 5926 | { |
04c9666a | 5927 | enum elf_ppc64_reloc_type r_type; |
1e2f5b6e AM |
5928 | unsigned long r_symndx; |
5929 | asection *sym_sec; | |
5930 | struct elf_link_hash_entry *h; | |
5931 | Elf_Internal_Sym *sym; | |
5932 | ||
3f764659 | 5933 | /* .opd contains a regular array of 16 or 24 byte entries. We're |
1e2f5b6e AM |
5934 | only interested in the reloc pointing to a function entry |
5935 | point. */ | |
50bc7936 AM |
5936 | if (rel->r_offset != offset |
5937 | || rel + 1 >= relend | |
5938 | || (rel + 1)->r_offset != offset + 8) | |
1e2f5b6e AM |
5939 | { |
5940 | /* If someone messes with .opd alignment then after a | |
5941 | "ld -r" we might have padding in the middle of .opd. | |
5942 | Also, there's nothing to prevent someone putting | |
5943 | something silly in .opd with the assembler. No .opd | |
b34976b6 | 5944 | optimization for them! */ |
3f764659 | 5945 | broken_opd: |
1e2f5b6e | 5946 | (*_bfd_error_handler) |
d003868e | 5947 | (_("%B: .opd is not a regular array of opd entries"), ibfd); |
b34976b6 | 5948 | need_edit = FALSE; |
1e2f5b6e AM |
5949 | break; |
5950 | } | |
5951 | ||
50bc7936 AM |
5952 | if ((r_type = ELF64_R_TYPE (rel->r_info)) != R_PPC64_ADDR64 |
5953 | || (r_type = ELF64_R_TYPE ((rel + 1)->r_info)) != R_PPC64_TOC) | |
5954 | { | |
5955 | (*_bfd_error_handler) | |
d003868e AM |
5956 | (_("%B: unexpected reloc type %u in .opd section"), |
5957 | ibfd, r_type); | |
50bc7936 AM |
5958 | need_edit = FALSE; |
5959 | break; | |
5960 | } | |
5961 | ||
1e2f5b6e | 5962 | r_symndx = ELF64_R_SYM (rel->r_info); |
411e1bfb AM |
5963 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, |
5964 | r_symndx, ibfd)) | |
50bc7936 | 5965 | goto error_ret; |
1e2f5b6e AM |
5966 | |
5967 | if (sym_sec == NULL || sym_sec->owner == NULL) | |
5968 | { | |
411e1bfb AM |
5969 | const char *sym_name; |
5970 | if (h != NULL) | |
5971 | sym_name = h->root.root.string; | |
5972 | else | |
5973 | sym_name = bfd_elf_local_sym_name (ibfd, sym); | |
5974 | ||
1e2f5b6e | 5975 | (*_bfd_error_handler) |
d003868e AM |
5976 | (_("%B: undefined sym `%s' in .opd section"), |
5977 | ibfd, sym_name); | |
b34976b6 | 5978 | need_edit = FALSE; |
1e2f5b6e AM |
5979 | break; |
5980 | } | |
5981 | ||
51020317 AM |
5982 | /* opd entries are always for functions defined in the |
5983 | current input bfd. If the symbol isn't defined in the | |
5984 | input bfd, then we won't be using the function in this | |
5985 | bfd; It must be defined in a linkonce section in another | |
5986 | bfd, or is weak. It's also possible that we are | |
5987 | discarding the function due to a linker script /DISCARD/, | |
5988 | which we test for via the output_section. */ | |
5989 | if (sym_sec->owner != ibfd | |
5990 | || sym_sec->output_section == bfd_abs_section_ptr) | |
b34976b6 | 5991 | need_edit = TRUE; |
1e2f5b6e | 5992 | |
50bc7936 | 5993 | rel += 2; |
3f764659 JJ |
5994 | if (rel == relend |
5995 | || (rel + 1 == relend && rel->r_offset == offset + 16)) | |
5996 | { | |
5997 | if (sec->size == offset + 24) | |
5998 | { | |
5999 | need_pad = NULL; | |
6000 | break; | |
6001 | } | |
6002 | if (rel == relend && sec->size == offset + 16) | |
6003 | { | |
6004 | cnt_16b++; | |
6005 | break; | |
6006 | } | |
6007 | goto broken_opd; | |
6008 | } | |
6009 | ||
6010 | if (rel->r_offset == offset + 24) | |
6011 | offset += 24; | |
6012 | else if (rel->r_offset != offset + 16) | |
6013 | goto broken_opd; | |
6014 | else if (rel + 1 < relend | |
6015 | && ELF64_R_TYPE (rel[0].r_info) == R_PPC64_ADDR64 | |
6016 | && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOC) | |
6017 | { | |
6018 | offset += 16; | |
6019 | cnt_16b++; | |
6020 | } | |
6021 | else if (rel + 2 < relend | |
6022 | && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_ADDR64 | |
6023 | && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_TOC) | |
6024 | { | |
6025 | offset += 24; | |
6026 | rel += 1; | |
6027 | } | |
6028 | else | |
6029 | goto broken_opd; | |
1e2f5b6e AM |
6030 | } |
6031 | ||
3f764659 JJ |
6032 | add_aux_fields = non_overlapping && cnt_16b > 0; |
6033 | ||
6034 | if (need_edit || add_aux_fields) | |
1e2f5b6e AM |
6035 | { |
6036 | Elf_Internal_Rela *write_rel; | |
6037 | bfd_byte *rptr, *wptr; | |
3f764659 | 6038 | bfd_byte *new_contents = NULL; |
b34976b6 | 6039 | bfd_boolean skip; |
3f764659 | 6040 | long opd_ent_size; |
1e2f5b6e AM |
6041 | |
6042 | /* This seems a waste of time as input .opd sections are all | |
6043 | zeros as generated by gcc, but I suppose there's no reason | |
6044 | this will always be so. We might start putting something in | |
6045 | the third word of .opd entries. */ | |
6046 | if ((sec->flags & SEC_IN_MEMORY) == 0) | |
6047 | { | |
eea6121a AM |
6048 | bfd_byte *loc; |
6049 | if (!bfd_malloc_and_get_section (ibfd, sec, &loc)) | |
6cdc0ccc | 6050 | { |
eea6121a AM |
6051 | if (loc != NULL) |
6052 | free (loc); | |
50bc7936 | 6053 | error_ret: |
6cdc0ccc AM |
6054 | if (local_syms != NULL |
6055 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
6056 | free (local_syms); | |
6cdc0ccc AM |
6057 | if (elf_section_data (sec)->relocs != relstart) |
6058 | free (relstart); | |
b34976b6 | 6059 | return FALSE; |
6cdc0ccc | 6060 | } |
1e2f5b6e AM |
6061 | sec->contents = loc; |
6062 | sec->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS); | |
6063 | } | |
6064 | ||
6065 | elf_section_data (sec)->relocs = relstart; | |
6066 | ||
6067 | wptr = sec->contents; | |
6068 | rptr = sec->contents; | |
3f764659 JJ |
6069 | new_contents = sec->contents; |
6070 | ||
6071 | if (add_aux_fields) | |
6072 | { | |
6073 | new_contents = bfd_malloc (sec->size + cnt_16b * 8); | |
6074 | if (new_contents == NULL) | |
6075 | return FALSE; | |
6076 | need_pad = FALSE; | |
6077 | wptr = new_contents; | |
6078 | } | |
6079 | ||
1e2f5b6e | 6080 | write_rel = relstart; |
b34976b6 | 6081 | skip = FALSE; |
1e2f5b6e | 6082 | offset = 0; |
3f764659 | 6083 | opd_ent_size = 0; |
1e2f5b6e AM |
6084 | for (rel = relstart; rel < relend; rel++) |
6085 | { | |
50bc7936 AM |
6086 | unsigned long r_symndx; |
6087 | asection *sym_sec; | |
6088 | struct elf_link_hash_entry *h; | |
6089 | Elf_Internal_Sym *sym; | |
6090 | ||
6091 | r_symndx = ELF64_R_SYM (rel->r_info); | |
6092 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
d37c89e5 | 6093 | r_symndx, ibfd)) |
50bc7936 AM |
6094 | goto error_ret; |
6095 | ||
1e2f5b6e AM |
6096 | if (rel->r_offset == offset) |
6097 | { | |
50bc7936 | 6098 | struct ppc_link_hash_entry *fdh = NULL; |
3f764659 JJ |
6099 | |
6100 | /* See if the .opd entry is full 24 byte or | |
6101 | 16 byte (with fd_aux entry overlapped with next | |
6102 | fd_func). */ | |
6103 | opd_ent_size = 24; | |
6104 | if ((rel + 2 == relend && sec->size == offset + 16) | |
6105 | || (rel + 3 < relend | |
6106 | && rel[2].r_offset == offset + 16 | |
6107 | && rel[3].r_offset == offset + 24 | |
6108 | && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_ADDR64 | |
6109 | && ELF64_R_TYPE (rel[3].r_info) == R_PPC64_TOC)) | |
6110 | opd_ent_size = 16; | |
6111 | ||
4025353c AM |
6112 | if (h != NULL |
6113 | && h->root.root.string[0] == '.') | |
50bc7936 AM |
6114 | fdh = get_fdh ((struct ppc_link_hash_entry *) h, |
6115 | ppc_hash_table (info)); | |
1e2f5b6e | 6116 | |
51020317 AM |
6117 | skip = (sym_sec->owner != ibfd |
6118 | || sym_sec->output_section == bfd_abs_section_ptr); | |
a4aa0fb7 AM |
6119 | if (skip) |
6120 | { | |
4025353c | 6121 | if (fdh != NULL && sym_sec->owner == ibfd) |
a4aa0fb7 AM |
6122 | { |
6123 | /* Arrange for the function descriptor sym | |
6124 | to be dropped. */ | |
d6fe2dc1 AM |
6125 | fdh->elf.root.u.def.value = 0; |
6126 | fdh->elf.root.u.def.section = sym_sec; | |
a4aa0fb7 | 6127 | } |
3f764659 | 6128 | opd_adjust[rel->r_offset / 8] = -1; |
a4aa0fb7 AM |
6129 | } |
6130 | else | |
1e2f5b6e AM |
6131 | { |
6132 | /* We'll be keeping this opd entry. */ | |
6133 | ||
4025353c | 6134 | if (fdh != NULL) |
1e2f5b6e | 6135 | { |
754021d0 AM |
6136 | /* Redefine the function descriptor symbol to |
6137 | this location in the opd section. It is | |
6138 | necessary to update the value here rather | |
6139 | than using an array of adjustments as we do | |
6140 | for local symbols, because various places | |
6141 | in the generic ELF code use the value | |
6142 | stored in u.def.value. */ | |
3f764659 | 6143 | fdh->elf.root.u.def.value = wptr - new_contents; |
754021d0 | 6144 | fdh->adjust_done = 1; |
1e2f5b6e | 6145 | } |
754021d0 AM |
6146 | |
6147 | /* Local syms are a bit tricky. We could | |
6148 | tweak them as they can be cached, but | |
6149 | we'd need to look through the local syms | |
6150 | for the function descriptor sym which we | |
6151 | don't have at the moment. So keep an | |
6152 | array of adjustments. */ | |
3f764659 JJ |
6153 | opd_adjust[rel->r_offset / 8] |
6154 | = (wptr - new_contents) - (rptr - sec->contents); | |
1e2f5b6e AM |
6155 | |
6156 | if (wptr != rptr) | |
3f764659 JJ |
6157 | memcpy (wptr, rptr, opd_ent_size); |
6158 | wptr += opd_ent_size; | |
6159 | if (add_aux_fields && opd_ent_size == 16) | |
6160 | { | |
6161 | memset (wptr, '\0', 8); | |
6162 | wptr += 8; | |
6163 | } | |
1e2f5b6e | 6164 | } |
3f764659 JJ |
6165 | rptr += opd_ent_size; |
6166 | offset += opd_ent_size; | |
1e2f5b6e AM |
6167 | } |
6168 | ||
50bc7936 AM |
6169 | if (skip) |
6170 | { | |
6171 | BFD_ASSERT (MUST_BE_DYN_RELOC (ELF64_R_TYPE (rel->r_info))); | |
6172 | if (info->shared) | |
6173 | { | |
6174 | /* We won't be needing dynamic relocs here. */ | |
6175 | struct ppc_dyn_relocs **pp; | |
6176 | struct ppc_dyn_relocs *p; | |
6177 | ||
6178 | if (h != NULL) | |
6179 | pp = &((struct ppc_link_hash_entry *) h)->dyn_relocs; | |
6180 | else if (sym_sec != NULL) | |
6181 | pp = ((struct ppc_dyn_relocs **) | |
6182 | &elf_section_data (sym_sec)->local_dynrel); | |
6183 | else | |
6184 | pp = ((struct ppc_dyn_relocs **) | |
6185 | &elf_section_data (sec)->local_dynrel); | |
6186 | while ((p = *pp) != NULL) | |
6187 | { | |
6188 | if (p->sec == sec) | |
6189 | { | |
6190 | p->count -= 1; | |
6191 | if (p->count == 0) | |
d37c89e5 | 6192 | *pp = p->next; |
50bc7936 AM |
6193 | break; |
6194 | } | |
6195 | pp = &p->next; | |
6196 | } | |
6197 | } | |
6198 | } | |
6199 | else | |
1e2f5b6e | 6200 | { |
50bc7936 AM |
6201 | /* We need to adjust any reloc offsets to point to the |
6202 | new opd entries. While we're at it, we may as well | |
6203 | remove redundant relocs. */ | |
3f764659 | 6204 | rel->r_offset += opd_adjust[(offset - opd_ent_size) / 8]; |
1e2f5b6e AM |
6205 | if (write_rel != rel) |
6206 | memcpy (write_rel, rel, sizeof (*rel)); | |
6207 | ++write_rel; | |
6208 | } | |
6209 | } | |
6210 | ||
3f764659 | 6211 | sec->size = wptr - new_contents; |
1e2f5b6e | 6212 | sec->reloc_count = write_rel - relstart; |
3f764659 JJ |
6213 | if (add_aux_fields) |
6214 | { | |
6215 | free (sec->contents); | |
6216 | sec->contents = new_contents; | |
6217 | } | |
6218 | ||
cdcf6e38 AM |
6219 | /* Fudge the size too, as this is used later in |
6220 | elf_bfd_final_link if we are emitting relocs. */ | |
6221 | elf_section_data (sec)->rel_hdr.sh_size | |
6222 | = sec->reloc_count * elf_section_data (sec)->rel_hdr.sh_entsize; | |
6223 | BFD_ASSERT (elf_section_data (sec)->rel_hdr2 == NULL); | |
754021d0 | 6224 | some_edited = TRUE; |
1e2f5b6e | 6225 | } |
6cdc0ccc | 6226 | else if (elf_section_data (sec)->relocs != relstart) |
1e2f5b6e | 6227 | free (relstart); |
6cdc0ccc | 6228 | |
411e1bfb AM |
6229 | if (local_syms != NULL |
6230 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
6231 | { | |
6232 | if (!info->keep_memory) | |
6233 | free (local_syms); | |
6234 | else | |
6235 | symtab_hdr->contents = (unsigned char *) local_syms; | |
6236 | } | |
6237 | } | |
6238 | ||
754021d0 AM |
6239 | if (some_edited) |
6240 | elf_link_hash_traverse (elf_hash_table (info), adjust_opd_syms, NULL); | |
6241 | ||
3f764659 JJ |
6242 | /* If we are doing a final link and the last .opd entry is just 16 byte |
6243 | long, add a 8 byte padding after it. */ | |
6244 | if (need_pad != NULL && !info->relocatable) | |
6245 | { | |
6246 | bfd_byte *p; | |
6247 | ||
6248 | if ((need_pad->flags & SEC_IN_MEMORY) == 0) | |
6249 | { | |
6250 | BFD_ASSERT (need_pad->size > 0); | |
6251 | ||
6252 | p = bfd_malloc (need_pad->size + 8); | |
6253 | if (p == NULL) | |
6254 | return FALSE; | |
699733f6 | 6255 | |
3f764659 JJ |
6256 | if (! bfd_get_section_contents (need_pad->owner, need_pad, |
6257 | p, 0, need_pad->size)) | |
6258 | return FALSE; | |
6259 | ||
6260 | need_pad->contents = p; | |
6261 | need_pad->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS); | |
6262 | } | |
6263 | else | |
6264 | { | |
6265 | p = bfd_realloc (need_pad->contents, need_pad->size + 8); | |
6266 | if (p == NULL) | |
6267 | return FALSE; | |
6268 | ||
6269 | need_pad->contents = p; | |
6270 | } | |
6271 | ||
6272 | memset (need_pad->contents + need_pad->size, 0, 8); | |
6273 | need_pad->size += 8; | |
6274 | } | |
6275 | ||
411e1bfb AM |
6276 | return TRUE; |
6277 | } | |
6278 | ||
e1918d23 | 6279 | /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */ |
411e1bfb | 6280 | |
e1918d23 | 6281 | asection * |
4ce794b7 | 6282 | ppc64_elf_tls_setup (bfd *obfd, struct bfd_link_info *info) |
411e1bfb | 6283 | { |
411e1bfb AM |
6284 | struct ppc_link_hash_table *htab; |
6285 | ||
411e1bfb | 6286 | htab = ppc_hash_table (info); |
a48ebf4d AM |
6287 | if (htab->tls_get_addr != NULL) |
6288 | { | |
8387904d | 6289 | struct ppc_link_hash_entry *h = htab->tls_get_addr; |
a48ebf4d | 6290 | |
8387904d AM |
6291 | while (h->elf.root.type == bfd_link_hash_indirect |
6292 | || h->elf.root.type == bfd_link_hash_warning) | |
6293 | h = (struct ppc_link_hash_entry *) h->elf.root.u.i.link; | |
a48ebf4d AM |
6294 | |
6295 | htab->tls_get_addr = h; | |
8387904d AM |
6296 | |
6297 | if (htab->tls_get_addr_fd == NULL | |
6298 | && h->oh != NULL | |
6299 | && h->oh->is_func_descriptor) | |
6300 | htab->tls_get_addr_fd = h->oh; | |
6301 | } | |
6302 | ||
6303 | if (htab->tls_get_addr_fd != NULL) | |
6304 | { | |
6305 | struct ppc_link_hash_entry *h = htab->tls_get_addr_fd; | |
6306 | ||
6307 | while (h->elf.root.type == bfd_link_hash_indirect | |
6308 | || h->elf.root.type == bfd_link_hash_warning) | |
6309 | h = (struct ppc_link_hash_entry *) h->elf.root.u.i.link; | |
6310 | ||
6311 | htab->tls_get_addr_fd = h; | |
a48ebf4d AM |
6312 | } |
6313 | ||
e1918d23 | 6314 | return _bfd_elf_tls_setup (obfd, info); |
951fd09b | 6315 | } |
411e1bfb | 6316 | |
951fd09b AM |
6317 | /* Run through all the TLS relocs looking for optimization |
6318 | opportunities. The linker has been hacked (see ppc64elf.em) to do | |
6319 | a preliminary section layout so that we know the TLS segment | |
6320 | offsets. We can't optimize earlier because some optimizations need | |
6321 | to know the tp offset, and we need to optimize before allocating | |
6322 | dynamic relocations. */ | |
6323 | ||
6324 | bfd_boolean | |
4ce794b7 | 6325 | ppc64_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED, struct bfd_link_info *info) |
951fd09b AM |
6326 | { |
6327 | bfd *ibfd; | |
6328 | asection *sec; | |
6329 | struct ppc_link_hash_table *htab; | |
6330 | ||
1049f94e | 6331 | if (info->relocatable || info->shared) |
411e1bfb AM |
6332 | return TRUE; |
6333 | ||
951fd09b | 6334 | htab = ppc_hash_table (info); |
411e1bfb AM |
6335 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) |
6336 | { | |
6337 | Elf_Internal_Sym *locsyms = NULL; | |
6338 | ||
6339 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
6340 | if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section)) | |
6341 | { | |
6342 | Elf_Internal_Rela *relstart, *rel, *relend; | |
6343 | int expecting_tls_get_addr; | |
6344 | ||
6345 | /* Read the relocations. */ | |
4ce794b7 | 6346 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, |
45d6a902 | 6347 | info->keep_memory); |
411e1bfb AM |
6348 | if (relstart == NULL) |
6349 | return FALSE; | |
6350 | ||
6351 | expecting_tls_get_addr = 0; | |
6352 | relend = relstart + sec->reloc_count; | |
6353 | for (rel = relstart; rel < relend; rel++) | |
6354 | { | |
6355 | enum elf_ppc64_reloc_type r_type; | |
6356 | unsigned long r_symndx; | |
6357 | struct elf_link_hash_entry *h; | |
6358 | Elf_Internal_Sym *sym; | |
6359 | asection *sym_sec; | |
e7b938ca AM |
6360 | char *tls_mask; |
6361 | char tls_set, tls_clear, tls_type = 0; | |
411e1bfb | 6362 | bfd_vma value; |
951fd09b | 6363 | bfd_boolean ok_tprel, is_local; |
411e1bfb AM |
6364 | |
6365 | r_symndx = ELF64_R_SYM (rel->r_info); | |
e7b938ca | 6366 | if (!get_sym_h (&h, &sym, &sym_sec, &tls_mask, &locsyms, |
411e1bfb AM |
6367 | r_symndx, ibfd)) |
6368 | { | |
6369 | err_free_rel: | |
6370 | if (elf_section_data (sec)->relocs != relstart) | |
6371 | free (relstart); | |
6372 | if (locsyms != NULL | |
6373 | && (elf_tdata (ibfd)->symtab_hdr.contents | |
6374 | != (unsigned char *) locsyms)) | |
6375 | free (locsyms); | |
6376 | return FALSE; | |
6377 | } | |
6378 | ||
6379 | if (h != NULL) | |
6380 | { | |
6381 | if (h->root.type != bfd_link_hash_defined | |
6382 | && h->root.type != bfd_link_hash_defweak) | |
6383 | continue; | |
6384 | value = h->root.u.def.value; | |
6385 | } | |
6386 | else | |
4025353c AM |
6387 | /* Symbols referenced by TLS relocs must be of type |
6388 | STT_TLS. So no need for .opd local sym adjust. */ | |
6389 | value = sym->st_value; | |
951fd09b | 6390 | |
411e1bfb | 6391 | ok_tprel = FALSE; |
951fd09b AM |
6392 | is_local = FALSE; |
6393 | if (h == NULL | |
6394 | || !(h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC)) | |
411e1bfb | 6395 | { |
951fd09b | 6396 | is_local = TRUE; |
411e1bfb AM |
6397 | value += sym_sec->output_offset; |
6398 | value += sym_sec->output_section->vma; | |
e1918d23 | 6399 | value -= htab->elf.tls_sec->vma; |
411e1bfb AM |
6400 | ok_tprel = (value + TP_OFFSET + ((bfd_vma) 1 << 31) |
6401 | < (bfd_vma) 1 << 32); | |
6402 | } | |
6403 | ||
4ce794b7 | 6404 | r_type = ELF64_R_TYPE (rel->r_info); |
411e1bfb AM |
6405 | switch (r_type) |
6406 | { | |
6407 | case R_PPC64_GOT_TLSLD16: | |
6408 | case R_PPC64_GOT_TLSLD16_LO: | |
6409 | case R_PPC64_GOT_TLSLD16_HI: | |
6410 | case R_PPC64_GOT_TLSLD16_HA: | |
951fd09b AM |
6411 | /* These relocs should never be against a symbol |
6412 | defined in a shared lib. Leave them alone if | |
6413 | that turns out to be the case. */ | |
e717da7e | 6414 | ppc64_tlsld_got (ibfd)->refcount -= 1; |
951fd09b AM |
6415 | if (!is_local) |
6416 | continue; | |
6417 | ||
951fd09b AM |
6418 | /* LD -> LE */ |
6419 | tls_set = 0; | |
6420 | tls_clear = TLS_LD; | |
e7b938ca | 6421 | tls_type = TLS_TLS | TLS_LD; |
411e1bfb AM |
6422 | expecting_tls_get_addr = 1; |
6423 | break; | |
6424 | ||
6425 | case R_PPC64_GOT_TLSGD16: | |
6426 | case R_PPC64_GOT_TLSGD16_LO: | |
6427 | case R_PPC64_GOT_TLSGD16_HI: | |
6428 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b | 6429 | if (ok_tprel) |
411e1bfb AM |
6430 | /* GD -> LE */ |
6431 | tls_set = 0; | |
6432 | else | |
6433 | /* GD -> IE */ | |
951fd09b AM |
6434 | tls_set = TLS_TLS | TLS_TPRELGD; |
6435 | tls_clear = TLS_GD; | |
e7b938ca | 6436 | tls_type = TLS_TLS | TLS_GD; |
411e1bfb AM |
6437 | expecting_tls_get_addr = 1; |
6438 | break; | |
6439 | ||
6440 | case R_PPC64_GOT_TPREL16_DS: | |
6441 | case R_PPC64_GOT_TPREL16_LO_DS: | |
6442 | case R_PPC64_GOT_TPREL16_HI: | |
6443 | case R_PPC64_GOT_TPREL16_HA: | |
6444 | expecting_tls_get_addr = 0; | |
6445 | if (ok_tprel) | |
6446 | { | |
6447 | /* IE -> LE */ | |
6448 | tls_set = 0; | |
6449 | tls_clear = TLS_TPREL; | |
e7b938ca | 6450 | tls_type = TLS_TLS | TLS_TPREL; |
411e1bfb AM |
6451 | break; |
6452 | } | |
6453 | else | |
6454 | continue; | |
6455 | ||
6456 | case R_PPC64_REL14: | |
6457 | case R_PPC64_REL14_BRTAKEN: | |
6458 | case R_PPC64_REL14_BRNTAKEN: | |
6459 | case R_PPC64_REL24: | |
6460 | if (h != NULL | |
8387904d AM |
6461 | && (h == &htab->tls_get_addr->elf |
6462 | || h == &htab->tls_get_addr_fd->elf)) | |
411e1bfb AM |
6463 | { |
6464 | if (!expecting_tls_get_addr | |
6465 | && rel != relstart | |
6466 | && ((ELF64_R_TYPE (rel[-1].r_info) | |
6467 | == R_PPC64_TOC16) | |
6468 | || (ELF64_R_TYPE (rel[-1].r_info) | |
6469 | == R_PPC64_TOC16_LO))) | |
6470 | { | |
6471 | /* Check for toc tls entries. */ | |
6472 | char *toc_tls; | |
951fd09b | 6473 | int retval; |
411e1bfb | 6474 | |
0d4792f7 | 6475 | retval = get_tls_mask (&toc_tls, NULL, &locsyms, |
951fd09b AM |
6476 | rel - 1, ibfd); |
6477 | if (retval == 0) | |
411e1bfb AM |
6478 | goto err_free_rel; |
6479 | if (toc_tls != NULL) | |
951fd09b | 6480 | expecting_tls_get_addr = retval > 1; |
411e1bfb AM |
6481 | } |
6482 | ||
6483 | if (expecting_tls_get_addr) | |
6484 | { | |
6485 | struct plt_entry *ent; | |
6486 | for (ent = h->plt.plist; ent; ent = ent->next) | |
6487 | if (ent->addend == 0) | |
6488 | { | |
6489 | if (ent->plt.refcount > 0) | |
6490 | ent->plt.refcount -= 1; | |
6491 | break; | |
6492 | } | |
6493 | } | |
6494 | } | |
6495 | expecting_tls_get_addr = 0; | |
6496 | continue; | |
6497 | ||
6498 | case R_PPC64_TPREL64: | |
6499 | expecting_tls_get_addr = 0; | |
6500 | if (ok_tprel) | |
6501 | { | |
6502 | /* IE -> LE */ | |
6503 | tls_set = TLS_EXPLICIT; | |
6504 | tls_clear = TLS_TPREL; | |
6505 | break; | |
6506 | } | |
6507 | else | |
6508 | continue; | |
6509 | ||
6510 | case R_PPC64_DTPMOD64: | |
6511 | expecting_tls_get_addr = 0; | |
951fd09b AM |
6512 | if (rel + 1 < relend |
6513 | && (rel[1].r_info | |
6514 | == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)) | |
6515 | && rel[1].r_offset == rel->r_offset + 8) | |
411e1bfb | 6516 | { |
951fd09b | 6517 | if (ok_tprel) |
411e1bfb | 6518 | /* GD -> LE */ |
951fd09b | 6519 | tls_set = TLS_EXPLICIT | TLS_GD; |
411e1bfb AM |
6520 | else |
6521 | /* GD -> IE */ | |
951fd09b AM |
6522 | tls_set = TLS_EXPLICIT | TLS_GD | TLS_TPRELGD; |
6523 | tls_clear = TLS_GD; | |
411e1bfb AM |
6524 | } |
6525 | else | |
6526 | { | |
951fd09b AM |
6527 | if (!is_local) |
6528 | continue; | |
6529 | ||
6530 | /* LD -> LE */ | |
6531 | tls_set = TLS_EXPLICIT; | |
6532 | tls_clear = TLS_LD; | |
411e1bfb AM |
6533 | } |
6534 | break; | |
6535 | ||
6536 | default: | |
6537 | expecting_tls_get_addr = 0; | |
6538 | continue; | |
6539 | } | |
6540 | ||
6541 | if ((tls_set & TLS_EXPLICIT) == 0) | |
6542 | { | |
6543 | struct got_entry *ent; | |
6544 | ||
6545 | /* Adjust got entry for this reloc. */ | |
6546 | if (h != NULL) | |
6547 | ent = h->got.glist; | |
6548 | else | |
6549 | ent = elf_local_got_ents (ibfd)[r_symndx]; | |
6550 | ||
6551 | for (; ent != NULL; ent = ent->next) | |
6552 | if (ent->addend == rel->r_addend | |
e717da7e | 6553 | && ent->owner == ibfd |
e7b938ca | 6554 | && ent->tls_type == tls_type) |
411e1bfb AM |
6555 | break; |
6556 | if (ent == NULL) | |
6557 | abort (); | |
6558 | ||
6559 | if (tls_set == 0) | |
6560 | { | |
6561 | /* We managed to get rid of a got entry. */ | |
6562 | if (ent->got.refcount > 0) | |
6563 | ent->got.refcount -= 1; | |
6564 | } | |
411e1bfb AM |
6565 | } |
6566 | else if (h != NULL) | |
6567 | { | |
6568 | struct ppc_link_hash_entry * eh; | |
6569 | struct ppc_dyn_relocs **pp; | |
6570 | struct ppc_dyn_relocs *p; | |
6571 | ||
6572 | /* Adjust dynamic relocs. */ | |
6573 | eh = (struct ppc_link_hash_entry *) h; | |
6574 | for (pp = &eh->dyn_relocs; | |
6575 | (p = *pp) != NULL; | |
6576 | pp = &p->next) | |
6577 | if (p->sec == sec) | |
6578 | { | |
6579 | /* If we got rid of a DTPMOD/DTPREL reloc | |
6580 | pair then we'll lose one or two dyn | |
6581 | relocs. */ | |
951fd09b | 6582 | if (tls_set == (TLS_EXPLICIT | TLS_GD)) |
411e1bfb | 6583 | p->count -= 1; |
951fd09b | 6584 | p->count -= 1; |
411e1bfb AM |
6585 | if (p->count == 0) |
6586 | *pp = p->next; | |
6587 | break; | |
6588 | } | |
6589 | } | |
6590 | ||
e7b938ca AM |
6591 | *tls_mask |= tls_set; |
6592 | *tls_mask &= ~tls_clear; | |
411e1bfb AM |
6593 | } |
6594 | ||
6595 | if (elf_section_data (sec)->relocs != relstart) | |
6596 | free (relstart); | |
6597 | } | |
6598 | ||
6599 | if (locsyms != NULL | |
6600 | && (elf_tdata (ibfd)->symtab_hdr.contents | |
6601 | != (unsigned char *) locsyms)) | |
6cdc0ccc AM |
6602 | { |
6603 | if (!info->keep_memory) | |
411e1bfb | 6604 | free (locsyms); |
6cdc0ccc | 6605 | else |
411e1bfb | 6606 | elf_tdata (ibfd)->symtab_hdr.contents = (unsigned char *) locsyms; |
6cdc0ccc | 6607 | } |
1e2f5b6e | 6608 | } |
b34976b6 | 6609 | return TRUE; |
1e2f5b6e | 6610 | } |
b34976b6 | 6611 | |
65f38f15 AM |
6612 | /* Allocate space in .plt, .got and associated reloc sections for |
6613 | dynamic relocs. */ | |
5bd4f169 | 6614 | |
b34976b6 | 6615 | static bfd_boolean |
4ce794b7 | 6616 | allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf) |
5bd4f169 | 6617 | { |
65f38f15 AM |
6618 | struct bfd_link_info *info; |
6619 | struct ppc_link_hash_table *htab; | |
5bd4f169 | 6620 | asection *s; |
65f38f15 AM |
6621 | struct ppc_link_hash_entry *eh; |
6622 | struct ppc_dyn_relocs *p; | |
411e1bfb | 6623 | struct got_entry *gent; |
5bd4f169 | 6624 | |
e92d460e | 6625 | if (h->root.type == bfd_link_hash_indirect) |
b34976b6 | 6626 | return TRUE; |
5bd4f169 | 6627 | |
e92d460e AM |
6628 | if (h->root.type == bfd_link_hash_warning) |
6629 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
6630 | ||
65f38f15 AM |
6631 | info = (struct bfd_link_info *) inf; |
6632 | htab = ppc_hash_table (info); | |
5bd4f169 | 6633 | |
65f38f15 | 6634 | if (htab->elf.dynamic_sections_created |
411e1bfb | 6635 | && h->dynindx != -1 |
9c7a29a3 | 6636 | && WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, h)) |
5bd4f169 | 6637 | { |
411e1bfb AM |
6638 | struct plt_entry *pent; |
6639 | bfd_boolean doneone = FALSE; | |
6640 | for (pent = h->plt.plist; pent != NULL; pent = pent->next) | |
6641 | if (pent->plt.refcount > 0) | |
6642 | { | |
411e1bfb AM |
6643 | /* If this is the first .plt entry, make room for the special |
6644 | first entry. */ | |
4ce794b7 | 6645 | s = htab->plt; |
eea6121a AM |
6646 | if (s->size == 0) |
6647 | s->size += PLT_INITIAL_ENTRY_SIZE; | |
411e1bfb | 6648 | |
eea6121a | 6649 | pent->plt.offset = s->size; |
411e1bfb AM |
6650 | |
6651 | /* Make room for this entry. */ | |
eea6121a | 6652 | s->size += PLT_ENTRY_SIZE; |
411e1bfb AM |
6653 | |
6654 | /* Make room for the .glink code. */ | |
4ce794b7 | 6655 | s = htab->glink; |
eea6121a AM |
6656 | if (s->size == 0) |
6657 | s->size += GLINK_CALL_STUB_SIZE; | |
411e1bfb | 6658 | /* We need bigger stubs past index 32767. */ |
eea6121a AM |
6659 | if (s->size >= GLINK_CALL_STUB_SIZE + 32768*2*4) |
6660 | s->size += 4; | |
6661 | s->size += 2*4; | |
411e1bfb AM |
6662 | |
6663 | /* We also need to make an entry in the .rela.plt section. */ | |
4ce794b7 | 6664 | s = htab->relplt; |
eea6121a | 6665 | s->size += sizeof (Elf64_External_Rela); |
411e1bfb AM |
6666 | doneone = TRUE; |
6667 | } | |
6668 | else | |
6669 | pent->plt.offset = (bfd_vma) -1; | |
6670 | if (!doneone) | |
65f38f15 | 6671 | { |
411e1bfb | 6672 | h->plt.plist = NULL; |
65f38f15 AM |
6673 | h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT; |
6674 | } | |
6675 | } | |
6676 | else | |
6677 | { | |
411e1bfb | 6678 | h->plt.plist = NULL; |
65f38f15 AM |
6679 | h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT; |
6680 | } | |
6681 | ||
951fd09b AM |
6682 | eh = (struct ppc_link_hash_entry *) h; |
6683 | /* Run through the TLS GD got entries first if we're changing them | |
6684 | to TPREL. */ | |
e7b938ca | 6685 | if ((eh->tls_mask & TLS_TPRELGD) != 0) |
951fd09b AM |
6686 | for (gent = h->got.glist; gent != NULL; gent = gent->next) |
6687 | if (gent->got.refcount > 0 | |
6688 | && (gent->tls_type & TLS_GD) != 0) | |
6689 | { | |
6690 | /* This was a GD entry that has been converted to TPREL. If | |
6691 | there happens to be a TPREL entry we can use that one. */ | |
6692 | struct got_entry *ent; | |
6693 | for (ent = h->got.glist; ent != NULL; ent = ent->next) | |
6694 | if (ent->got.refcount > 0 | |
6695 | && (ent->tls_type & TLS_TPREL) != 0 | |
e717da7e AM |
6696 | && ent->addend == gent->addend |
6697 | && ent->owner == gent->owner) | |
951fd09b AM |
6698 | { |
6699 | gent->got.refcount = 0; | |
6700 | break; | |
6701 | } | |
6702 | ||
6703 | /* If not, then we'll be using our own TPREL entry. */ | |
6704 | if (gent->got.refcount != 0) | |
6705 | gent->tls_type = TLS_TLS | TLS_TPREL; | |
6706 | } | |
6707 | ||
411e1bfb AM |
6708 | for (gent = h->got.glist; gent != NULL; gent = gent->next) |
6709 | if (gent->got.refcount > 0) | |
6710 | { | |
951fd09b AM |
6711 | bfd_boolean dyn; |
6712 | ||
411e1bfb | 6713 | /* Make sure this symbol is output as a dynamic symbol. |
951fd09b AM |
6714 | Undefined weak syms won't yet be marked as dynamic, |
6715 | nor will all TLS symbols. */ | |
411e1bfb AM |
6716 | if (h->dynindx == -1 |
6717 | && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0) | |
6718 | { | |
c152c796 | 6719 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
411e1bfb AM |
6720 | return FALSE; |
6721 | } | |
65f38f15 | 6722 | |
d881513a AM |
6723 | if ((gent->tls_type & TLS_LD) != 0 |
6724 | && !(h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC)) | |
411e1bfb | 6725 | { |
e717da7e | 6726 | gent->got.offset = ppc64_tlsld_got (gent->owner)->offset; |
951fd09b | 6727 | continue; |
411e1bfb | 6728 | } |
951fd09b | 6729 | |
e717da7e | 6730 | s = ppc64_elf_tdata (gent->owner)->got; |
eea6121a AM |
6731 | gent->got.offset = s->size; |
6732 | s->size | |
d881513a | 6733 | += (gent->tls_type & eh->tls_mask & (TLS_GD | TLS_LD)) ? 16 : 8; |
951fd09b | 6734 | dyn = htab->elf.dynamic_sections_created; |
4e795f50 AM |
6735 | if ((info->shared |
6736 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)) | |
6737 | && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
6738 | || h->root.type != bfd_link_hash_undefweak)) | |
eea6121a | 6739 | ppc64_elf_tdata (gent->owner)->relgot->size |
e7b938ca | 6740 | += (gent->tls_type & eh->tls_mask & TLS_GD |
951fd09b AM |
6741 | ? 2 * sizeof (Elf64_External_Rela) |
6742 | : sizeof (Elf64_External_Rela)); | |
411e1bfb AM |
6743 | } |
6744 | else | |
6745 | gent->got.offset = (bfd_vma) -1; | |
65f38f15 | 6746 | |
65f38f15 | 6747 | if (eh->dyn_relocs == NULL) |
b34976b6 | 6748 | return TRUE; |
65f38f15 AM |
6749 | |
6750 | /* In the shared -Bsymbolic case, discard space allocated for | |
6751 | dynamic pc-relative relocs against symbols which turn out to be | |
6752 | defined in regular objects. For the normal shared case, discard | |
6753 | space for relocs that have become local due to symbol visibility | |
6754 | changes. */ | |
6755 | ||
6756 | if (info->shared) | |
6757 | { | |
9c7a29a3 AM |
6758 | /* Relocs that use pc_count are those that appear on a call insn, |
6759 | or certain REL relocs (see MUST_BE_DYN_RELOC) that can be | |
6760 | generated via assembly. We want calls to protected symbols to | |
6761 | resolve directly to the function rather than going via the plt. | |
6762 | If people want function pointer comparisons to work as expected | |
6763 | then they should avoid writing weird assembly. */ | |
09695f56 | 6764 | if (SYMBOL_CALLS_LOCAL (info, h)) |
65f38f15 AM |
6765 | { |
6766 | struct ppc_dyn_relocs **pp; | |
6767 | ||
6768 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; ) | |
5bd4f169 | 6769 | { |
65f38f15 AM |
6770 | p->count -= p->pc_count; |
6771 | p->pc_count = 0; | |
6772 | if (p->count == 0) | |
6773 | *pp = p->next; | |
6774 | else | |
6775 | pp = &p->next; | |
5bd4f169 | 6776 | } |
65f38f15 | 6777 | } |
4e795f50 AM |
6778 | |
6779 | /* Also discard relocs on undefined weak syms with non-default | |
6780 | visibility. */ | |
6781 | if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT | |
6782 | && h->root.type == bfd_link_hash_undefweak) | |
6783 | eh->dyn_relocs = NULL; | |
65f38f15 | 6784 | } |
f4656909 | 6785 | else if (ELIMINATE_COPY_RELOCS) |
65f38f15 AM |
6786 | { |
6787 | /* For the non-shared case, discard space for relocs against | |
6788 | symbols which turn out to need copy relocs or are not | |
6789 | dynamic. */ | |
6790 | ||
6791 | if ((h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0 | |
58ac9f71 AM |
6792 | && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0 |
6793 | && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0) | |
65f38f15 AM |
6794 | { |
6795 | /* Make sure this symbol is output as a dynamic symbol. | |
6796 | Undefined weak syms won't yet be marked as dynamic. */ | |
6797 | if (h->dynindx == -1 | |
6798 | && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0) | |
6799 | { | |
c152c796 | 6800 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 6801 | return FALSE; |
65f38f15 AM |
6802 | } |
6803 | ||
6804 | /* If that succeeded, we know we'll be keeping all the | |
6805 | relocs. */ | |
6806 | if (h->dynindx != -1) | |
6807 | goto keep; | |
6808 | } | |
6809 | ||
6810 | eh->dyn_relocs = NULL; | |
6811 | ||
ec338859 | 6812 | keep: ; |
65f38f15 AM |
6813 | } |
6814 | ||
6815 | /* Finally, allocate space. */ | |
6816 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
6817 | { | |
6818 | asection *sreloc = elf_section_data (p->sec)->sreloc; | |
eea6121a | 6819 | sreloc->size += p->count * sizeof (Elf64_External_Rela); |
65f38f15 AM |
6820 | } |
6821 | ||
b34976b6 | 6822 | return TRUE; |
65f38f15 AM |
6823 | } |
6824 | ||
6825 | /* Find any dynamic relocs that apply to read-only sections. */ | |
6826 | ||
b34976b6 | 6827 | static bfd_boolean |
4ce794b7 | 6828 | readonly_dynrelocs (struct elf_link_hash_entry *h, void *inf) |
65f38f15 AM |
6829 | { |
6830 | struct ppc_link_hash_entry *eh; | |
6831 | struct ppc_dyn_relocs *p; | |
6832 | ||
e92d460e AM |
6833 | if (h->root.type == bfd_link_hash_warning) |
6834 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
6835 | ||
65f38f15 AM |
6836 | eh = (struct ppc_link_hash_entry *) h; |
6837 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
6838 | { | |
6839 | asection *s = p->sec->output_section; | |
6840 | ||
6841 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
6842 | { | |
4ce794b7 | 6843 | struct bfd_link_info *info = inf; |
65f38f15 AM |
6844 | |
6845 | info->flags |= DF_TEXTREL; | |
6846 | ||
6847 | /* Not an error, just cut short the traversal. */ | |
b34976b6 | 6848 | return FALSE; |
65f38f15 AM |
6849 | } |
6850 | } | |
b34976b6 | 6851 | return TRUE; |
65f38f15 AM |
6852 | } |
6853 | ||
6854 | /* Set the sizes of the dynamic sections. */ | |
6855 | ||
b34976b6 | 6856 | static bfd_boolean |
4ce794b7 AM |
6857 | ppc64_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED, |
6858 | struct bfd_link_info *info) | |
65f38f15 AM |
6859 | { |
6860 | struct ppc_link_hash_table *htab; | |
6861 | bfd *dynobj; | |
6862 | asection *s; | |
b34976b6 | 6863 | bfd_boolean relocs; |
65f38f15 AM |
6864 | bfd *ibfd; |
6865 | ||
6866 | htab = ppc_hash_table (info); | |
6867 | dynobj = htab->elf.dynobj; | |
6868 | if (dynobj == NULL) | |
6869 | abort (); | |
6870 | ||
6871 | if (htab->elf.dynamic_sections_created) | |
6872 | { | |
6873 | /* Set the contents of the .interp section to the interpreter. */ | |
36af4a4e | 6874 | if (info->executable) |
65f38f15 AM |
6875 | { |
6876 | s = bfd_get_section_by_name (dynobj, ".interp"); | |
6877 | if (s == NULL) | |
6878 | abort (); | |
eea6121a | 6879 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; |
65f38f15 AM |
6880 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; |
6881 | } | |
6882 | } | |
6883 | ||
6884 | /* Set up .got offsets for local syms, and space for local dynamic | |
6885 | relocs. */ | |
6886 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
6887 | { | |
411e1bfb AM |
6888 | struct got_entry **lgot_ents; |
6889 | struct got_entry **end_lgot_ents; | |
e7b938ca | 6890 | char *lgot_masks; |
65f38f15 AM |
6891 | bfd_size_type locsymcount; |
6892 | Elf_Internal_Shdr *symtab_hdr; | |
6893 | asection *srel; | |
6894 | ||
6895 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour) | |
6896 | continue; | |
6897 | ||
e717da7e AM |
6898 | if (ppc64_tlsld_got (ibfd)->refcount > 0) |
6899 | { | |
6900 | s = ppc64_elf_tdata (ibfd)->got; | |
eea6121a AM |
6901 | ppc64_tlsld_got (ibfd)->offset = s->size; |
6902 | s->size += 16; | |
e717da7e AM |
6903 | if (info->shared) |
6904 | { | |
6905 | srel = ppc64_elf_tdata (ibfd)->relgot; | |
eea6121a | 6906 | srel->size += sizeof (Elf64_External_Rela); |
e717da7e AM |
6907 | } |
6908 | } | |
6909 | else | |
6910 | ppc64_tlsld_got (ibfd)->offset = (bfd_vma) -1; | |
6911 | ||
65f38f15 AM |
6912 | for (s = ibfd->sections; s != NULL; s = s->next) |
6913 | { | |
ec338859 | 6914 | struct ppc_dyn_relocs *p; |
65f38f15 | 6915 | |
ec338859 AM |
6916 | for (p = *((struct ppc_dyn_relocs **) |
6917 | &elf_section_data (s)->local_dynrel); | |
6918 | p != NULL; | |
6919 | p = p->next) | |
65f38f15 | 6920 | { |
ec338859 AM |
6921 | if (!bfd_is_abs_section (p->sec) |
6922 | && bfd_is_abs_section (p->sec->output_section)) | |
6923 | { | |
6924 | /* Input section has been discarded, either because | |
6925 | it is a copy of a linkonce section or due to | |
6926 | linker script /DISCARD/, so we'll be discarding | |
6927 | the relocs too. */ | |
6928 | } | |
248866a8 | 6929 | else if (p->count != 0) |
ec338859 AM |
6930 | { |
6931 | srel = elf_section_data (p->sec)->sreloc; | |
eea6121a | 6932 | srel->size += p->count * sizeof (Elf64_External_Rela); |
248866a8 AM |
6933 | if ((p->sec->output_section->flags & SEC_READONLY) != 0) |
6934 | info->flags |= DF_TEXTREL; | |
ec338859 | 6935 | } |
65f38f15 AM |
6936 | } |
6937 | } | |
6938 | ||
411e1bfb AM |
6939 | lgot_ents = elf_local_got_ents (ibfd); |
6940 | if (!lgot_ents) | |
65f38f15 AM |
6941 | continue; |
6942 | ||
6943 | symtab_hdr = &elf_tdata (ibfd)->symtab_hdr; | |
6944 | locsymcount = symtab_hdr->sh_info; | |
411e1bfb | 6945 | end_lgot_ents = lgot_ents + locsymcount; |
e7b938ca | 6946 | lgot_masks = (char *) end_lgot_ents; |
e717da7e AM |
6947 | s = ppc64_elf_tdata (ibfd)->got; |
6948 | srel = ppc64_elf_tdata (ibfd)->relgot; | |
e7b938ca | 6949 | for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks) |
65f38f15 | 6950 | { |
411e1bfb AM |
6951 | struct got_entry *ent; |
6952 | ||
6953 | for (ent = *lgot_ents; ent != NULL; ent = ent->next) | |
6954 | if (ent->got.refcount > 0) | |
6955 | { | |
e7b938ca | 6956 | if ((ent->tls_type & *lgot_masks & TLS_LD) != 0) |
411e1bfb | 6957 | { |
e717da7e | 6958 | if (ppc64_tlsld_got (ibfd)->offset == (bfd_vma) -1) |
411e1bfb | 6959 | { |
eea6121a AM |
6960 | ppc64_tlsld_got (ibfd)->offset = s->size; |
6961 | s->size += 16; | |
411e1bfb | 6962 | if (info->shared) |
eea6121a | 6963 | srel->size += sizeof (Elf64_External_Rela); |
411e1bfb | 6964 | } |
e717da7e | 6965 | ent->got.offset = ppc64_tlsld_got (ibfd)->offset; |
411e1bfb AM |
6966 | } |
6967 | else | |
6968 | { | |
eea6121a | 6969 | ent->got.offset = s->size; |
e7b938ca | 6970 | if ((ent->tls_type & *lgot_masks & TLS_GD) != 0) |
411e1bfb | 6971 | { |
eea6121a | 6972 | s->size += 16; |
411e1bfb | 6973 | if (info->shared) |
eea6121a | 6974 | srel->size += 2 * sizeof (Elf64_External_Rela); |
411e1bfb AM |
6975 | } |
6976 | else | |
6977 | { | |
eea6121a | 6978 | s->size += 8; |
411e1bfb | 6979 | if (info->shared) |
eea6121a | 6980 | srel->size += sizeof (Elf64_External_Rela); |
411e1bfb AM |
6981 | } |
6982 | } | |
6983 | } | |
6984 | else | |
6985 | ent->got.offset = (bfd_vma) -1; | |
65f38f15 AM |
6986 | } |
6987 | } | |
6988 | ||
6989 | /* Allocate global sym .plt and .got entries, and space for global | |
6990 | sym dynamic relocs. */ | |
4ce794b7 | 6991 | elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info); |
65f38f15 AM |
6992 | |
6993 | /* We now have determined the sizes of the various dynamic sections. | |
6994 | Allocate memory for them. */ | |
b34976b6 | 6995 | relocs = FALSE; |
65f38f15 AM |
6996 | for (s = dynobj->sections; s != NULL; s = s->next) |
6997 | { | |
6998 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
6999 | continue; | |
7000 | ||
4ce794b7 | 7001 | if (s == htab->brlt || s == htab->relbrlt) |
721956f4 AM |
7002 | /* These haven't been allocated yet; don't strip. */ |
7003 | continue; | |
e717da7e AM |
7004 | else if (s == htab->got |
7005 | || s == htab->plt | |
4ce794b7 | 7006 | || s == htab->glink) |
65f38f15 AM |
7007 | { |
7008 | /* Strip this section if we don't need it; see the | |
7009 | comment below. */ | |
5bd4f169 | 7010 | } |
65f38f15 | 7011 | else if (strncmp (bfd_get_section_name (dynobj, s), ".rela", 5) == 0) |
5bd4f169 | 7012 | { |
eea6121a | 7013 | if (s->size == 0) |
5bd4f169 AM |
7014 | { |
7015 | /* If we don't need this section, strip it from the | |
7016 | output file. This is mostly to handle .rela.bss and | |
7017 | .rela.plt. We must create both sections in | |
7018 | create_dynamic_sections, because they must be created | |
7019 | before the linker maps input sections to output | |
7020 | sections. The linker does that before | |
7021 | adjust_dynamic_symbol is called, and it is that | |
7022 | function which decides whether anything needs to go | |
7023 | into these sections. */ | |
5bd4f169 AM |
7024 | } |
7025 | else | |
7026 | { | |
4ce794b7 | 7027 | if (s != htab->relplt) |
b34976b6 | 7028 | relocs = TRUE; |
5bd4f169 AM |
7029 | |
7030 | /* We use the reloc_count field as a counter if we need | |
7031 | to copy relocs into the output file. */ | |
7032 | s->reloc_count = 0; | |
7033 | } | |
7034 | } | |
65f38f15 | 7035 | else |
5bd4f169 AM |
7036 | { |
7037 | /* It's not one of our sections, so don't allocate space. */ | |
7038 | continue; | |
7039 | } | |
7040 | ||
eea6121a | 7041 | if (s->size == 0) |
5bd4f169 AM |
7042 | { |
7043 | _bfd_strip_section_from_output (info, s); | |
7044 | continue; | |
7045 | } | |
7046 | ||
5f333394 | 7047 | /* .plt is in the bss section. We don't initialise it. */ |
680a3378 | 7048 | if (s == htab->plt) |
5f333394 AM |
7049 | continue; |
7050 | ||
65f38f15 AM |
7051 | /* Allocate memory for the section contents. We use bfd_zalloc |
7052 | here in case unused entries are not reclaimed before the | |
7053 | section's contents are written out. This should not happen, | |
411e1bfb AM |
7054 | but this way if it does we get a R_PPC64_NONE reloc in .rela |
7055 | sections instead of garbage. | |
7056 | We also rely on the section contents being zero when writing | |
7057 | the GOT. */ | |
eea6121a | 7058 | s->contents = bfd_zalloc (dynobj, s->size); |
65f38f15 | 7059 | if (s->contents == NULL) |
b34976b6 | 7060 | return FALSE; |
5bd4f169 AM |
7061 | } |
7062 | ||
e717da7e AM |
7063 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) |
7064 | { | |
7065 | s = ppc64_elf_tdata (ibfd)->got; | |
7066 | if (s != NULL && s != htab->got) | |
7067 | { | |
eea6121a | 7068 | if (s->size == 0) |
e717da7e AM |
7069 | _bfd_strip_section_from_output (info, s); |
7070 | else | |
7071 | { | |
eea6121a | 7072 | s->contents = bfd_zalloc (ibfd, s->size); |
e717da7e AM |
7073 | if (s->contents == NULL) |
7074 | return FALSE; | |
7075 | } | |
7076 | } | |
7077 | s = ppc64_elf_tdata (ibfd)->relgot; | |
7078 | if (s != NULL) | |
7079 | { | |
eea6121a | 7080 | if (s->size == 0) |
e717da7e AM |
7081 | _bfd_strip_section_from_output (info, s); |
7082 | else | |
7083 | { | |
eea6121a | 7084 | s->contents = bfd_zalloc (ibfd, s->size); |
e717da7e AM |
7085 | if (s->contents == NULL) |
7086 | return FALSE; | |
7087 | relocs = TRUE; | |
7088 | s->reloc_count = 0; | |
7089 | } | |
7090 | } | |
7091 | } | |
7092 | ||
e86ce104 | 7093 | if (htab->elf.dynamic_sections_created) |
5bd4f169 AM |
7094 | { |
7095 | /* Add some entries to the .dynamic section. We fill in the | |
7096 | values later, in ppc64_elf_finish_dynamic_sections, but we | |
7097 | must add the entries now so that we get the correct size for | |
7098 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
7099 | dynamic linker and used by the debugger. */ | |
dc810e39 | 7100 | #define add_dynamic_entry(TAG, VAL) \ |
5a580b3a | 7101 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) |
dc810e39 | 7102 | |
36af4a4e | 7103 | if (info->executable) |
5bd4f169 | 7104 | { |
dc810e39 | 7105 | if (!add_dynamic_entry (DT_DEBUG, 0)) |
b34976b6 | 7106 | return FALSE; |
5bd4f169 AM |
7107 | } |
7108 | ||
eea6121a | 7109 | if (htab->plt != NULL && htab->plt->size != 0) |
5bd4f169 | 7110 | { |
dc810e39 AM |
7111 | if (!add_dynamic_entry (DT_PLTGOT, 0) |
7112 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
7113 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) | |
5d1634d7 AM |
7114 | || !add_dynamic_entry (DT_JMPREL, 0) |
7115 | || !add_dynamic_entry (DT_PPC64_GLINK, 0)) | |
b34976b6 | 7116 | return FALSE; |
5bd4f169 AM |
7117 | } |
7118 | ||
19397422 AM |
7119 | if (NO_OPD_RELOCS) |
7120 | { | |
7121 | if (!add_dynamic_entry (DT_PPC64_OPD, 0) | |
7122 | || !add_dynamic_entry (DT_PPC64_OPDSZ, 0)) | |
b34976b6 | 7123 | return FALSE; |
19397422 AM |
7124 | } |
7125 | ||
5bd4f169 AM |
7126 | if (relocs) |
7127 | { | |
dc810e39 AM |
7128 | if (!add_dynamic_entry (DT_RELA, 0) |
7129 | || !add_dynamic_entry (DT_RELASZ, 0) | |
7130 | || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela))) | |
b34976b6 | 7131 | return FALSE; |
5bd4f169 | 7132 | |
65f38f15 AM |
7133 | /* If any dynamic relocs apply to a read-only section, |
7134 | then we need a DT_TEXTREL entry. */ | |
248866a8 | 7135 | if ((info->flags & DF_TEXTREL) == 0) |
4ce794b7 | 7136 | elf_link_hash_traverse (&htab->elf, readonly_dynrelocs, info); |
5bd4f169 | 7137 | |
65f38f15 | 7138 | if ((info->flags & DF_TEXTREL) != 0) |
5bd4f169 | 7139 | { |
65f38f15 | 7140 | if (!add_dynamic_entry (DT_TEXTREL, 0)) |
b34976b6 | 7141 | return FALSE; |
5bd4f169 | 7142 | } |
5bd4f169 | 7143 | } |
5bd4f169 | 7144 | } |
65f38f15 | 7145 | #undef add_dynamic_entry |
5bd4f169 | 7146 | |
b34976b6 | 7147 | return TRUE; |
5bd4f169 AM |
7148 | } |
7149 | ||
721956f4 | 7150 | /* Determine the type of stub needed, if any, for a call. */ |
5bd4f169 | 7151 | |
4ce794b7 AM |
7152 | static inline enum ppc_stub_type |
7153 | ppc_type_of_stub (asection *input_sec, | |
7154 | const Elf_Internal_Rela *rel, | |
7155 | struct ppc_link_hash_entry **hash, | |
7156 | bfd_vma destination) | |
5bd4f169 | 7157 | { |
721956f4 AM |
7158 | struct ppc_link_hash_entry *h = *hash; |
7159 | bfd_vma location; | |
7160 | bfd_vma branch_offset; | |
7161 | bfd_vma max_branch_offset; | |
4ce794b7 | 7162 | enum elf_ppc64_reloc_type r_type; |
5bd4f169 | 7163 | |
721956f4 AM |
7164 | if (h != NULL) |
7165 | { | |
7166 | if (h->oh != NULL | |
8387904d AM |
7167 | && h->oh->is_func_descriptor) |
7168 | h = h->oh; | |
7169 | ||
7170 | if (h->elf.dynindx != -1) | |
5bd4f169 | 7171 | { |
411e1bfb | 7172 | struct plt_entry *ent; |
8387904d AM |
7173 | |
7174 | for (ent = h->elf.plt.plist; ent != NULL; ent = ent->next) | |
411e1bfb AM |
7175 | if (ent->addend == rel->r_addend |
7176 | && ent->plt.offset != (bfd_vma) -1) | |
7177 | { | |
8387904d | 7178 | *hash = h; |
411e1bfb AM |
7179 | return ppc_stub_plt_call; |
7180 | } | |
5bd4f169 AM |
7181 | } |
7182 | ||
ee7de3e6 AM |
7183 | if (!(h->elf.root.type == bfd_link_hash_defined |
7184 | || h->elf.root.type == bfd_link_hash_defweak) | |
7185 | || h->elf.root.u.def.section->output_section == NULL) | |
721956f4 | 7186 | return ppc_stub_none; |
5d1634d7 | 7187 | } |
5d1634d7 | 7188 | |
721956f4 AM |
7189 | /* Determine where the call point is. */ |
7190 | location = (input_sec->output_offset | |
7191 | + input_sec->output_section->vma | |
7192 | + rel->r_offset); | |
5d1634d7 | 7193 | |
721956f4 AM |
7194 | branch_offset = destination - location; |
7195 | r_type = ELF64_R_TYPE (rel->r_info); | |
5d1634d7 | 7196 | |
721956f4 AM |
7197 | /* Determine if a long branch stub is needed. */ |
7198 | max_branch_offset = 1 << 25; | |
4ce794b7 | 7199 | if (r_type != R_PPC64_REL24) |
721956f4 | 7200 | max_branch_offset = 1 << 15; |
5d1634d7 | 7201 | |
721956f4 AM |
7202 | if (branch_offset + max_branch_offset >= 2 * max_branch_offset) |
7203 | /* We need a stub. Figure out whether a long_branch or plt_branch | |
7204 | is needed later. */ | |
7205 | return ppc_stub_long_branch; | |
5d1634d7 | 7206 | |
721956f4 | 7207 | return ppc_stub_none; |
5d1634d7 AM |
7208 | } |
7209 | ||
7210 | /* Build a .plt call stub. */ | |
7211 | ||
4ce794b7 AM |
7212 | static inline bfd_byte * |
7213 | build_plt_stub (bfd *obfd, bfd_byte *p, int offset) | |
5d1634d7 AM |
7214 | { |
7215 | #define PPC_LO(v) ((v) & 0xffff) | |
7216 | #define PPC_HI(v) (((v) >> 16) & 0xffff) | |
7217 | #define PPC_HA(v) PPC_HI ((v) + 0x8000) | |
7218 | ||
5d1634d7 | 7219 | bfd_put_32 (obfd, ADDIS_R12_R2 | PPC_HA (offset), p), p += 4; |
ad8e1ba5 | 7220 | bfd_put_32 (obfd, STD_R2_40R1, p), p += 4; |
5d1634d7 AM |
7221 | bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset), p), p += 4; |
7222 | if (PPC_HA (offset + 8) != PPC_HA (offset)) | |
ad8e1ba5 | 7223 | bfd_put_32 (obfd, ADDIS_R12_R12 | 1, p), p += 4; |
5d1634d7 AM |
7224 | offset += 8; |
7225 | bfd_put_32 (obfd, LD_R2_0R12 | PPC_LO (offset), p), p += 4; | |
7226 | if (PPC_HA (offset + 8) != PPC_HA (offset)) | |
ad8e1ba5 | 7227 | bfd_put_32 (obfd, ADDIS_R12_R12 | 1, p), p += 4; |
5d1634d7 AM |
7228 | offset += 8; |
7229 | bfd_put_32 (obfd, MTCTR_R11, p), p += 4; | |
7230 | bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset), p), p += 4; | |
7231 | bfd_put_32 (obfd, BCTR, p), p += 4; | |
7232 | return p; | |
7233 | } | |
7234 | ||
b34976b6 | 7235 | static bfd_boolean |
4ce794b7 | 7236 | ppc_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg) |
5d1634d7 | 7237 | { |
721956f4 AM |
7238 | struct ppc_stub_hash_entry *stub_entry; |
7239 | struct ppc_branch_hash_entry *br_entry; | |
5d1634d7 AM |
7240 | struct bfd_link_info *info; |
7241 | struct ppc_link_hash_table *htab; | |
721956f4 AM |
7242 | bfd_byte *loc; |
7243 | bfd_byte *p; | |
7244 | unsigned int indx; | |
411e1bfb | 7245 | struct plt_entry *ent; |
721956f4 AM |
7246 | bfd_vma off; |
7247 | int size; | |
5d1634d7 | 7248 | |
721956f4 AM |
7249 | /* Massage our args to the form they really have. */ |
7250 | stub_entry = (struct ppc_stub_hash_entry *) gen_entry; | |
4ce794b7 | 7251 | info = in_arg; |
5d1634d7 | 7252 | |
5d1634d7 AM |
7253 | htab = ppc_hash_table (info); |
7254 | ||
721956f4 | 7255 | /* Make a note of the offset within the stubs for this entry. */ |
eea6121a | 7256 | stub_entry->stub_offset = stub_entry->stub_sec->size; |
97b639ba | 7257 | loc = stub_entry->stub_sec->contents + stub_entry->stub_offset; |
721956f4 | 7258 | |
4ce794b7 | 7259 | htab->stub_count[stub_entry->stub_type - 1] += 1; |
721956f4 | 7260 | switch (stub_entry->stub_type) |
5d1634d7 | 7261 | { |
721956f4 | 7262 | case ppc_stub_long_branch: |
ad8e1ba5 | 7263 | case ppc_stub_long_branch_r2off: |
721956f4 AM |
7264 | /* Branches are relative. This is where we are going to. */ |
7265 | off = (stub_entry->target_value | |
7266 | + stub_entry->target_section->output_offset | |
7267 | + stub_entry->target_section->output_section->vma); | |
5d1634d7 | 7268 | |
721956f4 AM |
7269 | /* And this is where we are coming from. */ |
7270 | off -= (stub_entry->stub_offset | |
97b639ba AM |
7271 | + stub_entry->stub_sec->output_offset |
7272 | + stub_entry->stub_sec->output_section->vma); | |
e86ce104 | 7273 | |
ad8e1ba5 AM |
7274 | if (stub_entry->stub_type != ppc_stub_long_branch_r2off) |
7275 | size = 4; | |
7276 | else | |
7277 | { | |
7278 | bfd_vma r2off; | |
7279 | ||
7280 | r2off = (htab->stub_group[stub_entry->target_section->id].toc_off | |
7281 | - htab->stub_group[stub_entry->id_sec->id].toc_off); | |
97b639ba | 7282 | bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc); |
ad8e1ba5 | 7283 | loc += 4; |
97b639ba | 7284 | bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc); |
ad8e1ba5 | 7285 | loc += 4; |
97b639ba | 7286 | bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc); |
ad8e1ba5 AM |
7287 | loc += 4; |
7288 | off -= 12; | |
7289 | size = 16; | |
7290 | } | |
97b639ba | 7291 | bfd_put_32 (htab->stub_bfd, B_DOT | (off & 0x3fffffc), loc); |
ad8e1ba5 AM |
7292 | |
7293 | BFD_ASSERT (off + (1 << 25) < (bfd_vma) (1 << 26)); | |
721956f4 | 7294 | break; |
e86ce104 | 7295 | |
721956f4 | 7296 | case ppc_stub_plt_branch: |
ad8e1ba5 | 7297 | case ppc_stub_plt_branch_r2off: |
721956f4 AM |
7298 | br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table, |
7299 | stub_entry->root.string + 9, | |
b34976b6 | 7300 | FALSE, FALSE); |
721956f4 AM |
7301 | if (br_entry == NULL) |
7302 | { | |
7303 | (*_bfd_error_handler) (_("can't find branch stub `%s'"), | |
7304 | stub_entry->root.string + 9); | |
b34976b6 AM |
7305 | htab->stub_error = TRUE; |
7306 | return FALSE; | |
721956f4 AM |
7307 | } |
7308 | ||
7309 | off = (stub_entry->target_value | |
7310 | + stub_entry->target_section->output_offset | |
7311 | + stub_entry->target_section->output_section->vma); | |
7312 | ||
4ce794b7 AM |
7313 | bfd_put_64 (htab->brlt->owner, off, |
7314 | htab->brlt->contents + br_entry->offset); | |
721956f4 AM |
7315 | |
7316 | if (info->shared) | |
7317 | { | |
7318 | /* Create a reloc for the branch lookup table entry. */ | |
7319 | Elf_Internal_Rela rela; | |
ad8e1ba5 | 7320 | bfd_byte *rl; |
5d1634d7 | 7321 | |
721956f4 | 7322 | rela.r_offset = (br_entry->offset |
4ce794b7 AM |
7323 | + htab->brlt->output_offset |
7324 | + htab->brlt->output_section->vma); | |
721956f4 AM |
7325 | rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); |
7326 | rela.r_addend = off; | |
7327 | ||
4ce794b7 AM |
7328 | rl = htab->relbrlt->contents; |
7329 | rl += htab->relbrlt->reloc_count++ * sizeof (Elf64_External_Rela); | |
7330 | bfd_elf64_swap_reloca_out (htab->relbrlt->owner, &rela, rl); | |
721956f4 AM |
7331 | } |
7332 | ||
7333 | off = (br_entry->offset | |
4ce794b7 AM |
7334 | + htab->brlt->output_offset |
7335 | + htab->brlt->output_section->vma | |
7336 | - elf_gp (htab->brlt->output_section->owner) | |
ad8e1ba5 | 7337 | - htab->stub_group[stub_entry->id_sec->id].toc_off); |
721956f4 | 7338 | |
ad8e1ba5 | 7339 | if (off + 0x80008000 > 0xffffffff || (off & 7) != 0) |
5d1634d7 AM |
7340 | { |
7341 | (*_bfd_error_handler) | |
e86ce104 | 7342 | (_("linkage table error against `%s'"), |
721956f4 | 7343 | stub_entry->root.string); |
5d1634d7 | 7344 | bfd_set_error (bfd_error_bad_value); |
b34976b6 AM |
7345 | htab->stub_error = TRUE; |
7346 | return FALSE; | |
5d1634d7 | 7347 | } |
41bd81ab | 7348 | |
721956f4 | 7349 | indx = off; |
ad8e1ba5 AM |
7350 | if (stub_entry->stub_type != ppc_stub_plt_branch_r2off) |
7351 | { | |
97b639ba | 7352 | bfd_put_32 (htab->stub_bfd, ADDIS_R12_R2 | PPC_HA (indx), loc); |
ad8e1ba5 | 7353 | loc += 4; |
97b639ba | 7354 | bfd_put_32 (htab->stub_bfd, LD_R11_0R12 | PPC_LO (indx), loc); |
ad8e1ba5 AM |
7355 | size = 16; |
7356 | } | |
7357 | else | |
7358 | { | |
7359 | bfd_vma r2off; | |
7360 | ||
7361 | r2off = (htab->stub_group[stub_entry->target_section->id].toc_off | |
7362 | - htab->stub_group[stub_entry->id_sec->id].toc_off); | |
97b639ba | 7363 | bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc); |
ad8e1ba5 | 7364 | loc += 4; |
97b639ba | 7365 | bfd_put_32 (htab->stub_bfd, ADDIS_R12_R2 | PPC_HA (indx), loc); |
ad8e1ba5 | 7366 | loc += 4; |
97b639ba | 7367 | bfd_put_32 (htab->stub_bfd, LD_R11_0R12 | PPC_LO (indx), loc); |
ad8e1ba5 | 7368 | loc += 4; |
97b639ba | 7369 | bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc); |
ad8e1ba5 | 7370 | loc += 4; |
97b639ba | 7371 | bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc); |
ad8e1ba5 AM |
7372 | size = 28; |
7373 | } | |
7374 | loc += 4; | |
97b639ba | 7375 | bfd_put_32 (htab->stub_bfd, MTCTR_R11, loc); |
ad8e1ba5 | 7376 | loc += 4; |
97b639ba | 7377 | bfd_put_32 (htab->stub_bfd, BCTR, loc); |
721956f4 | 7378 | break; |
5d1634d7 | 7379 | |
721956f4 | 7380 | case ppc_stub_plt_call: |
c862ae31 AM |
7381 | /* Do the best we can for shared libraries built without |
7382 | exporting ".foo" for each "foo". This can happen when symbol | |
7383 | versioning scripts strip all bar a subset of symbols. */ | |
8387904d AM |
7384 | if (stub_entry->h->oh != NULL |
7385 | && stub_entry->h->oh->elf.root.type != bfd_link_hash_defined | |
34814b9f | 7386 | && stub_entry->h->oh->elf.root.type != bfd_link_hash_defweak) |
c862ae31 AM |
7387 | { |
7388 | /* Point the symbol at the stub. There may be multiple stubs, | |
7389 | we don't really care; The main thing is to make this sym | |
8f3bab57 AM |
7390 | defined somewhere. Maybe defining the symbol in the stub |
7391 | section is a silly idea. If we didn't do this, htab->top_id | |
7392 | could disappear. */ | |
34814b9f AM |
7393 | stub_entry->h->oh->elf.root.type = bfd_link_hash_defined; |
7394 | stub_entry->h->oh->elf.root.u.def.section = stub_entry->stub_sec; | |
7395 | stub_entry->h->oh->elf.root.u.def.value = stub_entry->stub_offset; | |
c862ae31 AM |
7396 | } |
7397 | ||
721956f4 | 7398 | /* Now build the stub. */ |
411e1bfb AM |
7399 | off = (bfd_vma) -1; |
7400 | for (ent = stub_entry->h->elf.plt.plist; ent != NULL; ent = ent->next) | |
7401 | if (ent->addend == stub_entry->addend) | |
7402 | { | |
7403 | off = ent->plt.offset; | |
7404 | break; | |
7405 | } | |
721956f4 AM |
7406 | if (off >= (bfd_vma) -2) |
7407 | abort (); | |
7408 | ||
7409 | off &= ~ (bfd_vma) 1; | |
4ce794b7 AM |
7410 | off += (htab->plt->output_offset |
7411 | + htab->plt->output_section->vma | |
7412 | - elf_gp (htab->plt->output_section->owner) | |
ad8e1ba5 | 7413 | - htab->stub_group[stub_entry->id_sec->id].toc_off); |
721956f4 | 7414 | |
ad8e1ba5 | 7415 | if (off + 0x80008000 > 0xffffffff || (off & 7) != 0) |
721956f4 AM |
7416 | { |
7417 | (*_bfd_error_handler) | |
7418 | (_("linkage table error against `%s'"), | |
7419 | stub_entry->h->elf.root.root.string); | |
7420 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 AM |
7421 | htab->stub_error = TRUE; |
7422 | return FALSE; | |
721956f4 AM |
7423 | } |
7424 | ||
97b639ba | 7425 | p = build_plt_stub (htab->stub_bfd, loc, off); |
721956f4 AM |
7426 | size = p - loc; |
7427 | break; | |
7428 | ||
7429 | default: | |
7430 | BFD_FAIL (); | |
b34976b6 | 7431 | return FALSE; |
721956f4 AM |
7432 | } |
7433 | ||
eea6121a | 7434 | stub_entry->stub_sec->size += size; |
97b639ba AM |
7435 | |
7436 | if (htab->emit_stub_syms | |
7437 | && !(stub_entry->stub_type == ppc_stub_plt_call | |
8387904d | 7438 | && stub_entry->h->oh != NULL |
34814b9f AM |
7439 | && stub_entry->h->oh->elf.root.type == bfd_link_hash_defined |
7440 | && stub_entry->h->oh->elf.root.u.def.section == stub_entry->stub_sec | |
7441 | && stub_entry->h->oh->elf.root.u.def.value == stub_entry->stub_offset)) | |
97b639ba AM |
7442 | { |
7443 | struct elf_link_hash_entry *h; | |
7444 | h = elf_link_hash_lookup (&htab->elf, stub_entry->root.string, | |
7445 | TRUE, FALSE, FALSE); | |
7446 | if (h == NULL) | |
7447 | return FALSE; | |
7448 | if (h->root.type == bfd_link_hash_new) | |
7449 | { | |
7450 | h->root.type = bfd_link_hash_defined; | |
7451 | h->root.u.def.section = stub_entry->stub_sec; | |
7452 | h->root.u.def.value = stub_entry->stub_offset; | |
7453 | h->elf_link_hash_flags = (ELF_LINK_HASH_REF_REGULAR | |
7454 | | ELF_LINK_HASH_DEF_REGULAR | |
7455 | | ELF_LINK_HASH_REF_REGULAR_NONWEAK | |
7456 | | ELF_LINK_FORCED_LOCAL); | |
7457 | } | |
7458 | } | |
7459 | ||
b34976b6 | 7460 | return TRUE; |
721956f4 AM |
7461 | } |
7462 | ||
7463 | /* As above, but don't actually build the stub. Just bump offset so | |
7464 | we know stub section sizes, and select plt_branch stubs where | |
7465 | long_branch stubs won't do. */ | |
7466 | ||
b34976b6 | 7467 | static bfd_boolean |
4ce794b7 | 7468 | ppc_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg) |
721956f4 AM |
7469 | { |
7470 | struct ppc_stub_hash_entry *stub_entry; | |
63bc6f6c | 7471 | struct bfd_link_info *info; |
721956f4 AM |
7472 | struct ppc_link_hash_table *htab; |
7473 | bfd_vma off; | |
7474 | int size; | |
7475 | ||
7476 | /* Massage our args to the form they really have. */ | |
7477 | stub_entry = (struct ppc_stub_hash_entry *) gen_entry; | |
63bc6f6c AM |
7478 | info = in_arg; |
7479 | ||
7480 | htab = ppc_hash_table (info); | |
721956f4 AM |
7481 | |
7482 | if (stub_entry->stub_type == ppc_stub_plt_call) | |
7483 | { | |
411e1bfb | 7484 | struct plt_entry *ent; |
58ac9f71 | 7485 | off = (bfd_vma) -1; |
411e1bfb AM |
7486 | for (ent = stub_entry->h->elf.plt.plist; ent != NULL; ent = ent->next) |
7487 | if (ent->addend == stub_entry->addend) | |
7488 | { | |
7489 | off = ent->plt.offset & ~(bfd_vma) 1; | |
7490 | break; | |
7491 | } | |
58ac9f71 | 7492 | if (off >= (bfd_vma) -2) |
411e1bfb | 7493 | abort (); |
4ce794b7 AM |
7494 | off += (htab->plt->output_offset |
7495 | + htab->plt->output_section->vma | |
7496 | - elf_gp (htab->plt->output_section->owner) | |
ad8e1ba5 | 7497 | - htab->stub_group[stub_entry->id_sec->id].toc_off); |
721956f4 | 7498 | |
ad8e1ba5 | 7499 | size = PLT_CALL_STUB_SIZE; |
4ce794b7 | 7500 | if (PPC_HA (off + 16) != PPC_HA (off)) |
721956f4 AM |
7501 | size += 4; |
7502 | } | |
7503 | else | |
7504 | { | |
ad8e1ba5 AM |
7505 | /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off |
7506 | variants. */ | |
721956f4 AM |
7507 | off = (stub_entry->target_value |
7508 | + stub_entry->target_section->output_offset | |
7509 | + stub_entry->target_section->output_section->vma); | |
eea6121a | 7510 | off -= (stub_entry->stub_sec->size |
721956f4 AM |
7511 | + stub_entry->stub_sec->output_offset |
7512 | + stub_entry->stub_sec->output_section->vma); | |
7513 | ||
ad8e1ba5 AM |
7514 | /* Reset the stub type from the plt variant in case we now |
7515 | can reach with a shorter stub. */ | |
7516 | if (stub_entry->stub_type >= ppc_stub_plt_branch) | |
7517 | stub_entry->stub_type += ppc_stub_long_branch - ppc_stub_plt_branch; | |
7518 | ||
7519 | size = 4; | |
7520 | if (stub_entry->stub_type == ppc_stub_long_branch_r2off) | |
7521 | { | |
7522 | off -= 12; | |
7523 | size = 16; | |
7524 | } | |
7525 | ||
7526 | /* If the branch offset if too big, use a ppc_stub_plt_branch. */ | |
721956f4 AM |
7527 | if (off + (1 << 25) >= (bfd_vma) (1 << 26)) |
7528 | { | |
7529 | struct ppc_branch_hash_entry *br_entry; | |
7530 | ||
7531 | br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table, | |
7532 | stub_entry->root.string + 9, | |
b34976b6 | 7533 | TRUE, FALSE); |
721956f4 AM |
7534 | if (br_entry == NULL) |
7535 | { | |
7536 | (*_bfd_error_handler) (_("can't build branch stub `%s'"), | |
7537 | stub_entry->root.string + 9); | |
b34976b6 AM |
7538 | htab->stub_error = TRUE; |
7539 | return FALSE; | |
721956f4 AM |
7540 | } |
7541 | ||
7542 | if (br_entry->iter != htab->stub_iteration) | |
7543 | { | |
7544 | br_entry->iter = htab->stub_iteration; | |
eea6121a AM |
7545 | br_entry->offset = htab->brlt->size; |
7546 | htab->brlt->size += 8; | |
63bc6f6c AM |
7547 | |
7548 | if (info->shared) | |
eea6121a | 7549 | htab->relbrlt->size += sizeof (Elf64_External_Rela); |
721956f4 | 7550 | } |
ad8e1ba5 AM |
7551 | |
7552 | stub_entry->stub_type += ppc_stub_plt_branch - ppc_stub_long_branch; | |
721956f4 | 7553 | size = 16; |
ad8e1ba5 AM |
7554 | if (stub_entry->stub_type != ppc_stub_plt_branch) |
7555 | size = 28; | |
721956f4 AM |
7556 | } |
7557 | } | |
7558 | ||
eea6121a | 7559 | stub_entry->stub_sec->size += size; |
b34976b6 | 7560 | return TRUE; |
721956f4 AM |
7561 | } |
7562 | ||
7563 | /* Set up various things so that we can make a list of input sections | |
7564 | for each output section included in the link. Returns -1 on error, | |
cedb70c5 | 7565 | 0 when no stubs will be needed, and 1 on success. */ |
721956f4 AM |
7566 | |
7567 | int | |
4ce794b7 | 7568 | ppc64_elf_setup_section_lists (bfd *output_bfd, struct bfd_link_info *info) |
721956f4 AM |
7569 | { |
7570 | bfd *input_bfd; | |
734b6cf9 | 7571 | int top_id, top_index, id; |
721956f4 | 7572 | asection *section; |
734b6cf9 | 7573 | asection **input_list; |
721956f4 AM |
7574 | bfd_size_type amt; |
7575 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
7576 | ||
4ce794b7 | 7577 | if (htab->brlt == NULL) |
721956f4 AM |
7578 | return 0; |
7579 | ||
1e2f5b6e | 7580 | /* Find the top input section id. */ |
3d6f9012 | 7581 | for (input_bfd = info->input_bfds, top_id = 3; |
721956f4 AM |
7582 | input_bfd != NULL; |
7583 | input_bfd = input_bfd->link_next) | |
7584 | { | |
721956f4 AM |
7585 | for (section = input_bfd->sections; |
7586 | section != NULL; | |
7587 | section = section->next) | |
7588 | { | |
7589 | if (top_id < section->id) | |
7590 | top_id = section->id; | |
7591 | } | |
7592 | } | |
721956f4 | 7593 | |
8f3bab57 | 7594 | htab->top_id = top_id; |
721956f4 | 7595 | amt = sizeof (struct map_stub) * (top_id + 1); |
4ce794b7 | 7596 | htab->stub_group = bfd_zmalloc (amt); |
721956f4 AM |
7597 | if (htab->stub_group == NULL) |
7598 | return -1; | |
7599 | ||
3d6f9012 AM |
7600 | /* Set toc_off for com, und, abs and ind sections. */ |
7601 | for (id = 0; id < 3; id++) | |
7602 | htab->stub_group[id].toc_off = TOC_BASE_OFF; | |
721956f4 | 7603 | |
3d6f9012 | 7604 | elf_gp (output_bfd) = htab->toc_curr = ppc64_elf_toc (output_bfd); |
734b6cf9 AM |
7605 | |
7606 | /* We can't use output_bfd->section_count here to find the top output | |
7607 | section index as some sections may have been removed, and | |
7608 | _bfd_strip_section_from_output doesn't renumber the indices. */ | |
7609 | for (section = output_bfd->sections, top_index = 0; | |
7610 | section != NULL; | |
7611 | section = section->next) | |
7612 | { | |
7613 | if (top_index < section->index) | |
7614 | top_index = section->index; | |
7615 | } | |
7616 | ||
7617 | htab->top_index = top_index; | |
7618 | amt = sizeof (asection *) * (top_index + 1); | |
4ce794b7 | 7619 | input_list = bfd_zmalloc (amt); |
734b6cf9 AM |
7620 | htab->input_list = input_list; |
7621 | if (input_list == NULL) | |
7622 | return -1; | |
7623 | ||
721956f4 AM |
7624 | return 1; |
7625 | } | |
7626 | ||
e717da7e AM |
7627 | /* The linker repeatedly calls this function for each TOC input section |
7628 | and linker generated GOT section. Group input bfds such that the toc | |
7629 | within a group is less than 64k in size. Will break with cute linker | |
7630 | scripts that play games with dot in the output toc section. */ | |
ad8e1ba5 AM |
7631 | |
7632 | void | |
4ce794b7 | 7633 | ppc64_elf_next_toc_section (struct bfd_link_info *info, asection *isec) |
ad8e1ba5 AM |
7634 | { |
7635 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
99877b66 AM |
7636 | bfd_vma addr = isec->output_offset + isec->output_section->vma; |
7637 | bfd_vma off = addr - htab->toc_curr; | |
ad8e1ba5 | 7638 | |
99877b66 AM |
7639 | if (off + isec->size > 0x10000) |
7640 | htab->toc_curr = addr; | |
7641 | ||
7642 | elf_gp (isec->owner) = (htab->toc_curr | |
7643 | - elf_gp (isec->output_section->owner) | |
7644 | + TOC_BASE_OFF); | |
ad8e1ba5 AM |
7645 | } |
7646 | ||
7647 | /* Called after the last call to the above function. */ | |
7648 | ||
7649 | void | |
4ce794b7 AM |
7650 | ppc64_elf_reinit_toc (bfd *output_bfd ATTRIBUTE_UNUSED, |
7651 | struct bfd_link_info *info) | |
ad8e1ba5 AM |
7652 | { |
7653 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
ad8e1ba5 AM |
7654 | |
7655 | /* toc_curr tracks the TOC offset used for code sections below in | |
7656 | ppc64_elf_next_input_section. Start off at 0x8000. */ | |
3d6f9012 | 7657 | htab->toc_curr = TOC_BASE_OFF; |
ad8e1ba5 AM |
7658 | } |
7659 | ||
9b5ecbd0 AM |
7660 | /* No toc references were found in ISEC. If the code in ISEC makes no |
7661 | calls, then there's no need to use toc adjusting stubs when branching | |
7662 | into ISEC. Actually, indirect calls from ISEC are OK as they will | |
7663 | load r2. */ | |
7664 | ||
7665 | static int | |
4ce794b7 | 7666 | toc_adjusting_stub_needed (struct bfd_link_info *info, asection *isec) |
9b5ecbd0 AM |
7667 | { |
7668 | bfd_byte *contents; | |
7669 | bfd_size_type i; | |
7670 | int ret; | |
7671 | int branch_ok; | |
7672 | ||
772119ce AM |
7673 | /* We know none of our code bearing sections will need toc stubs. */ |
7674 | if ((isec->flags & SEC_LINKER_CREATED) != 0) | |
7675 | return 0; | |
7676 | ||
eea6121a | 7677 | if (isec->size == 0) |
082c50f8 AM |
7678 | return 0; |
7679 | ||
9b5ecbd0 AM |
7680 | /* Hack for linux kernel. .fixup contains branches, but only back to |
7681 | the function that hit an exception. */ | |
7682 | branch_ok = strcmp (isec->name, ".fixup") == 0; | |
7683 | ||
7684 | contents = elf_section_data (isec)->this_hdr.contents; | |
7685 | if (contents == NULL) | |
7686 | { | |
eea6121a | 7687 | if (!bfd_malloc_and_get_section (isec->owner, isec, &contents)) |
9b5ecbd0 | 7688 | { |
eea6121a AM |
7689 | if (contents != NULL) |
7690 | free (contents); | |
9b5ecbd0 AM |
7691 | return -1; |
7692 | } | |
7693 | if (info->keep_memory) | |
7694 | elf_section_data (isec)->this_hdr.contents = contents; | |
7695 | } | |
7696 | ||
7697 | /* Code scan, because we don't necessarily have relocs on calls to | |
7698 | static functions. */ | |
7699 | ret = 0; | |
eea6121a | 7700 | for (i = 0; i < isec->size; i += 4) |
9b5ecbd0 AM |
7701 | { |
7702 | unsigned long insn = bfd_get_32 (isec->owner, contents + i); | |
7703 | /* Is this a branch? */ | |
772119ce | 7704 | if ((insn & (0x3f << 26)) == (18 << 26) |
9b5ecbd0 AM |
7705 | /* If branch and link, it's a function call. */ |
7706 | && ((insn & 1) != 0 | |
7707 | /* Sibling calls use a plain branch. I don't know a way | |
7708 | of deciding whether a branch is really a sibling call. */ | |
7709 | || !branch_ok)) | |
7710 | { | |
7711 | ret = 1; | |
7712 | break; | |
7713 | } | |
7714 | } | |
7715 | ||
7716 | if (elf_section_data (isec)->this_hdr.contents != contents) | |
7717 | free (contents); | |
7718 | return ret; | |
7719 | } | |
7720 | ||
721956f4 AM |
7721 | /* The linker repeatedly calls this function for each input section, |
7722 | in the order that input sections are linked into output sections. | |
7723 | Build lists of input sections to determine groupings between which | |
7724 | we may insert linker stubs. */ | |
7725 | ||
9b5ecbd0 | 7726 | bfd_boolean |
4ce794b7 | 7727 | ppc64_elf_next_input_section (struct bfd_link_info *info, asection *isec) |
721956f4 AM |
7728 | { |
7729 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
9b5ecbd0 | 7730 | int ret; |
721956f4 | 7731 | |
734b6cf9 AM |
7732 | if ((isec->output_section->flags & SEC_CODE) != 0 |
7733 | && isec->output_section->index <= htab->top_index) | |
721956f4 | 7734 | { |
734b6cf9 | 7735 | asection **list = htab->input_list + isec->output_section->index; |
3d6f9012 | 7736 | /* Steal the link_sec pointer for our list. */ |
721956f4 | 7737 | #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec) |
3d6f9012 AM |
7738 | /* This happens to make the list in reverse order, |
7739 | which is what we want. */ | |
734b6cf9 AM |
7740 | PREV_SEC (isec) = *list; |
7741 | *list = isec; | |
721956f4 | 7742 | } |
ad8e1ba5 AM |
7743 | |
7744 | /* If a code section has a function that uses the TOC then we need | |
7745 | to use the right TOC (obviously). Also, make sure that .opd gets | |
ee87f2da AM |
7746 | the correct TOC value for R_PPC64_TOC relocs that don't have or |
7747 | can't find their function symbol (shouldn't ever happen now). */ | |
ad8e1ba5 | 7748 | if (isec->has_gp_reloc || (isec->flags & SEC_CODE) == 0) |
9b5ecbd0 AM |
7749 | { |
7750 | if (elf_gp (isec->owner) != 0) | |
7751 | htab->toc_curr = elf_gp (isec->owner); | |
7752 | } | |
7753 | else if ((ret = toc_adjusting_stub_needed (info, isec)) < 0) | |
7754 | return FALSE; | |
7755 | else | |
7756 | isec->has_gp_reloc = ret; | |
ad8e1ba5 AM |
7757 | |
7758 | /* Functions that don't use the TOC can belong in any TOC group. | |
7759 | Use the last TOC base. This happens to make _init and _fini | |
7760 | pasting work. */ | |
7761 | htab->stub_group[isec->id].toc_off = htab->toc_curr; | |
9b5ecbd0 | 7762 | return TRUE; |
721956f4 AM |
7763 | } |
7764 | ||
7765 | /* See whether we can group stub sections together. Grouping stub | |
7766 | sections may result in fewer stubs. More importantly, we need to | |
7767 | put all .init* and .fini* stubs at the beginning of the .init or | |
7768 | .fini output sections respectively, because glibc splits the | |
7769 | _init and _fini functions into multiple parts. Putting a stub in | |
7770 | the middle of a function is not a good idea. */ | |
7771 | ||
7772 | static void | |
4ce794b7 AM |
7773 | group_sections (struct ppc_link_hash_table *htab, |
7774 | bfd_size_type stub_group_size, | |
7775 | bfd_boolean stubs_always_before_branch) | |
721956f4 | 7776 | { |
734b6cf9 AM |
7777 | asection **list = htab->input_list + htab->top_index; |
7778 | do | |
721956f4 | 7779 | { |
734b6cf9 AM |
7780 | asection *tail = *list; |
7781 | while (tail != NULL) | |
721956f4 | 7782 | { |
734b6cf9 AM |
7783 | asection *curr; |
7784 | asection *prev; | |
7785 | bfd_size_type total; | |
7786 | bfd_boolean big_sec; | |
7787 | bfd_vma curr_toc; | |
7788 | ||
7789 | curr = tail; | |
eea6121a | 7790 | total = tail->size; |
734b6cf9 AM |
7791 | big_sec = total >= stub_group_size; |
7792 | curr_toc = htab->stub_group[tail->id].toc_off; | |
7793 | ||
7794 | while ((prev = PREV_SEC (curr)) != NULL | |
7795 | && ((total += curr->output_offset - prev->output_offset) | |
ad8e1ba5 AM |
7796 | < stub_group_size) |
7797 | && htab->stub_group[prev->id].toc_off == curr_toc) | |
734b6cf9 AM |
7798 | curr = prev; |
7799 | ||
7800 | /* OK, the size from the start of CURR to the end is less | |
7801 | than stub_group_size and thus can be handled by one stub | |
7802 | section. (or the tail section is itself larger than | |
7803 | stub_group_size, in which case we may be toast.) We | |
7804 | should really be keeping track of the total size of stubs | |
7805 | added here, as stubs contribute to the final output | |
7806 | section size. That's a little tricky, and this way will | |
7807 | only break if stubs added make the total size more than | |
7808 | 2^25, ie. for the default stub_group_size, if stubs total | |
7809 | more than 2097152 bytes, or nearly 75000 plt call stubs. */ | |
7810 | do | |
721956f4 AM |
7811 | { |
7812 | prev = PREV_SEC (tail); | |
734b6cf9 | 7813 | /* Set up this stub group. */ |
721956f4 AM |
7814 | htab->stub_group[tail->id].link_sec = curr; |
7815 | } | |
734b6cf9 AM |
7816 | while (tail != curr && (tail = prev) != NULL); |
7817 | ||
7818 | /* But wait, there's more! Input sections up to stub_group_size | |
7819 | bytes before the stub section can be handled by it too. | |
7820 | Don't do this if we have a really large section after the | |
7821 | stubs, as adding more stubs increases the chance that | |
7822 | branches may not reach into the stub section. */ | |
7823 | if (!stubs_always_before_branch && !big_sec) | |
7824 | { | |
7825 | total = 0; | |
7826 | while (prev != NULL | |
7827 | && ((total += tail->output_offset - prev->output_offset) | |
7828 | < stub_group_size) | |
7829 | && htab->stub_group[prev->id].toc_off == curr_toc) | |
7830 | { | |
7831 | tail = prev; | |
7832 | prev = PREV_SEC (tail); | |
7833 | htab->stub_group[tail->id].link_sec = curr; | |
7834 | } | |
7835 | } | |
7836 | tail = prev; | |
721956f4 AM |
7837 | } |
7838 | } | |
734b6cf9 AM |
7839 | while (list-- != htab->input_list); |
7840 | free (htab->input_list); | |
721956f4 AM |
7841 | #undef PREV_SEC |
7842 | } | |
7843 | ||
721956f4 AM |
7844 | /* Determine and set the size of the stub section for a final link. |
7845 | ||
7846 | The basic idea here is to examine all the relocations looking for | |
7847 | PC-relative calls to a target that is unreachable with a "bl" | |
7848 | instruction. */ | |
7849 | ||
b34976b6 | 7850 | bfd_boolean |
4ce794b7 | 7851 | ppc64_elf_size_stubs (bfd *output_bfd, |
4ce794b7 AM |
7852 | struct bfd_link_info *info, |
7853 | bfd_signed_vma group_size, | |
7854 | asection *(*add_stub_section) (const char *, asection *), | |
7855 | void (*layout_sections_again) (void)) | |
721956f4 AM |
7856 | { |
7857 | bfd_size_type stub_group_size; | |
b34976b6 | 7858 | bfd_boolean stubs_always_before_branch; |
721956f4 AM |
7859 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
7860 | ||
7861 | /* Stash our params away. */ | |
721956f4 AM |
7862 | htab->add_stub_section = add_stub_section; |
7863 | htab->layout_sections_again = layout_sections_again; | |
7864 | stubs_always_before_branch = group_size < 0; | |
7865 | if (group_size < 0) | |
7866 | stub_group_size = -group_size; | |
7867 | else | |
7868 | stub_group_size = group_size; | |
7869 | if (stub_group_size == 1) | |
7870 | { | |
7871 | /* Default values. */ | |
58ac9f71 AM |
7872 | if (stubs_always_before_branch) |
7873 | { | |
7874 | stub_group_size = 0x1e00000; | |
7875 | if (htab->has_14bit_branch) | |
7876 | stub_group_size = 0x7800; | |
7877 | } | |
7878 | else | |
7879 | { | |
7880 | stub_group_size = 0x1c00000; | |
7881 | if (htab->has_14bit_branch) | |
7882 | stub_group_size = 0x7000; | |
7883 | } | |
721956f4 AM |
7884 | } |
7885 | ||
7886 | group_sections (htab, stub_group_size, stubs_always_before_branch); | |
7887 | ||
721956f4 AM |
7888 | while (1) |
7889 | { | |
7890 | bfd *input_bfd; | |
7891 | unsigned int bfd_indx; | |
7892 | asection *stub_sec; | |
b34976b6 | 7893 | bfd_boolean stub_changed; |
721956f4 AM |
7894 | |
7895 | htab->stub_iteration += 1; | |
b34976b6 | 7896 | stub_changed = FALSE; |
721956f4 AM |
7897 | |
7898 | for (input_bfd = info->input_bfds, bfd_indx = 0; | |
7899 | input_bfd != NULL; | |
7900 | input_bfd = input_bfd->link_next, bfd_indx++) | |
7901 | { | |
7902 | Elf_Internal_Shdr *symtab_hdr; | |
7903 | asection *section; | |
6cdc0ccc | 7904 | Elf_Internal_Sym *local_syms = NULL; |
721956f4 AM |
7905 | |
7906 | /* We'll need the symbol table in a second. */ | |
7907 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
7908 | if (symtab_hdr->sh_info == 0) | |
7909 | continue; | |
7910 | ||
721956f4 AM |
7911 | /* Walk over each section attached to the input bfd. */ |
7912 | for (section = input_bfd->sections; | |
7913 | section != NULL; | |
7914 | section = section->next) | |
7915 | { | |
721956f4 | 7916 | Elf_Internal_Rela *internal_relocs, *irelaend, *irela; |
721956f4 AM |
7917 | |
7918 | /* If there aren't any relocs, then there's nothing more | |
7919 | to do. */ | |
7920 | if ((section->flags & SEC_RELOC) == 0 | |
7921 | || section->reloc_count == 0) | |
7922 | continue; | |
7923 | ||
7924 | /* If this section is a link-once section that will be | |
7925 | discarded, then don't create any stubs. */ | |
7926 | if (section->output_section == NULL | |
7927 | || section->output_section->owner != output_bfd) | |
7928 | continue; | |
7929 | ||
1e2f5b6e AM |
7930 | /* Get the relocs. */ |
7931 | internal_relocs | |
4ce794b7 | 7932 | = _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL, |
45d6a902 | 7933 | info->keep_memory); |
721956f4 | 7934 | if (internal_relocs == NULL) |
1e2f5b6e | 7935 | goto error_ret_free_local; |
721956f4 AM |
7936 | |
7937 | /* Now examine each relocation. */ | |
7938 | irela = internal_relocs; | |
7939 | irelaend = irela + section->reloc_count; | |
7940 | for (; irela < irelaend; irela++) | |
7941 | { | |
4ce794b7 AM |
7942 | enum elf_ppc64_reloc_type r_type; |
7943 | unsigned int r_indx; | |
721956f4 AM |
7944 | enum ppc_stub_type stub_type; |
7945 | struct ppc_stub_hash_entry *stub_entry; | |
8387904d | 7946 | asection *sym_sec, *code_sec; |
721956f4 AM |
7947 | bfd_vma sym_value; |
7948 | bfd_vma destination; | |
8843416a | 7949 | bfd_boolean ok_dest; |
721956f4 | 7950 | struct ppc_link_hash_entry *hash; |
8387904d | 7951 | struct ppc_link_hash_entry *fdh; |
411e1bfb AM |
7952 | struct elf_link_hash_entry *h; |
7953 | Elf_Internal_Sym *sym; | |
721956f4 AM |
7954 | char *stub_name; |
7955 | const asection *id_sec; | |
8387904d | 7956 | long *opd_adjust; |
721956f4 AM |
7957 | |
7958 | r_type = ELF64_R_TYPE (irela->r_info); | |
7959 | r_indx = ELF64_R_SYM (irela->r_info); | |
7960 | ||
4ce794b7 | 7961 | if (r_type >= R_PPC64_max) |
721956f4 AM |
7962 | { |
7963 | bfd_set_error (bfd_error_bad_value); | |
6cdc0ccc | 7964 | goto error_ret_free_internal; |
721956f4 AM |
7965 | } |
7966 | ||
7967 | /* Only look for stubs on branch instructions. */ | |
4ce794b7 AM |
7968 | if (r_type != R_PPC64_REL24 |
7969 | && r_type != R_PPC64_REL14 | |
7970 | && r_type != R_PPC64_REL14_BRTAKEN | |
7971 | && r_type != R_PPC64_REL14_BRNTAKEN) | |
721956f4 AM |
7972 | continue; |
7973 | ||
7974 | /* Now determine the call target, its name, value, | |
7975 | section. */ | |
411e1bfb AM |
7976 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, |
7977 | r_indx, input_bfd)) | |
7978 | goto error_ret_free_internal; | |
7979 | hash = (struct ppc_link_hash_entry *) h; | |
7980 | ||
8843416a | 7981 | ok_dest = FALSE; |
8387904d | 7982 | fdh = NULL; |
411e1bfb | 7983 | if (hash == NULL) |
721956f4 | 7984 | { |
411e1bfb | 7985 | sym_value = sym->st_value; |
8843416a | 7986 | ok_dest = TRUE; |
721956f4 AM |
7987 | } |
7988 | else | |
7989 | { | |
411e1bfb | 7990 | sym_value = 0; |
99877b66 AM |
7991 | /* Recognise an old ABI func code entry sym, and |
7992 | use the func descriptor sym instead. */ | |
7993 | if (hash->elf.root.type == bfd_link_hash_undefweak | |
8387904d AM |
7994 | && hash->elf.root.root.string[0] == '.' |
7995 | && (fdh = get_fdh (hash, htab)) != NULL) | |
7996 | { | |
8387904d AM |
7997 | if (fdh->elf.root.type == bfd_link_hash_defined |
7998 | || fdh->elf.root.type == bfd_link_hash_defweak) | |
7999 | { | |
8000 | sym_sec = fdh->elf.root.u.def.section; | |
8001 | sym_value = fdh->elf.root.u.def.value; | |
8002 | if (sym_sec->output_section != NULL) | |
8003 | ok_dest = TRUE; | |
8004 | } | |
99877b66 AM |
8005 | else |
8006 | fdh = NULL; | |
8387904d AM |
8007 | } |
8008 | else if (hash->elf.root.type == bfd_link_hash_defined | |
8009 | || hash->elf.root.type == bfd_link_hash_defweak) | |
721956f4 | 8010 | { |
721956f4 AM |
8011 | sym_value = hash->elf.root.u.def.value; |
8012 | if (sym_sec->output_section != NULL) | |
8843416a | 8013 | ok_dest = TRUE; |
721956f4 AM |
8014 | } |
8015 | else if (hash->elf.root.type == bfd_link_hash_undefweak) | |
8016 | ; | |
8017 | else if (hash->elf.root.type == bfd_link_hash_undefined) | |
8018 | ; | |
8019 | else | |
8020 | { | |
8021 | bfd_set_error (bfd_error_bad_value); | |
8022 | goto error_ret_free_internal; | |
8023 | } | |
8024 | } | |
8025 | ||
8843416a AM |
8026 | destination = 0; |
8027 | if (ok_dest) | |
8028 | { | |
8029 | sym_value += irela->r_addend; | |
8030 | destination = (sym_value | |
8031 | + sym_sec->output_offset | |
8032 | + sym_sec->output_section->vma); | |
8033 | } | |
8034 | ||
8387904d AM |
8035 | code_sec = sym_sec; |
8036 | opd_adjust = get_opd_info (sym_sec); | |
8037 | if (opd_adjust != NULL) | |
8038 | { | |
8039 | bfd_vma dest; | |
8040 | ||
8041 | if (hash == NULL) | |
8042 | { | |
3f764659 | 8043 | long adjust = opd_adjust[sym_value / 8]; |
8387904d AM |
8044 | if (adjust == -1) |
8045 | continue; | |
8046 | sym_value += adjust; | |
8047 | } | |
8048 | dest = opd_entry_value (sym_sec, sym_value, | |
8049 | &code_sec, &sym_value); | |
8050 | if (dest != (bfd_vma) -1) | |
8051 | { | |
8052 | destination = dest; | |
8053 | if (fdh != NULL) | |
8054 | { | |
8055 | /* Fixup old ABI sym to point at code | |
8056 | entry. */ | |
99877b66 | 8057 | hash->elf.root.type = bfd_link_hash_defweak; |
8387904d AM |
8058 | hash->elf.root.u.def.section = code_sec; |
8059 | hash->elf.root.u.def.value = sym_value; | |
8060 | } | |
8061 | } | |
8062 | } | |
8063 | ||
721956f4 AM |
8064 | /* Determine what (if any) linker stub is needed. */ |
8065 | stub_type = ppc_type_of_stub (section, irela, &hash, | |
8066 | destination); | |
ad8e1ba5 AM |
8067 | |
8068 | if (stub_type != ppc_stub_plt_call) | |
8069 | { | |
8070 | /* Check whether we need a TOC adjusting stub. | |
8071 | Since the linker pastes together pieces from | |
8072 | different object files when creating the | |
8073 | _init and _fini functions, it may be that a | |
8074 | call to what looks like a local sym is in | |
8075 | fact a call needing a TOC adjustment. */ | |
8387904d AM |
8076 | if (code_sec != NULL |
8077 | && code_sec->output_section != NULL | |
8078 | && (htab->stub_group[code_sec->id].toc_off | |
9b5ecbd0 | 8079 | != htab->stub_group[section->id].toc_off) |
8387904d | 8080 | && code_sec->has_gp_reloc |
9b5ecbd0 | 8081 | && section->has_gp_reloc) |
ad8e1ba5 AM |
8082 | stub_type = ppc_stub_long_branch_r2off; |
8083 | } | |
8084 | ||
721956f4 AM |
8085 | if (stub_type == ppc_stub_none) |
8086 | continue; | |
8087 | ||
411e1bfb AM |
8088 | /* __tls_get_addr calls might be eliminated. */ |
8089 | if (stub_type != ppc_stub_plt_call | |
8090 | && hash != NULL | |
8387904d AM |
8091 | && (hash == htab->tls_get_addr |
8092 | || hash == htab->tls_get_addr_fd) | |
411e1bfb AM |
8093 | && section->has_tls_reloc |
8094 | && irela != internal_relocs) | |
8095 | { | |
8096 | /* Get tls info. */ | |
e7b938ca | 8097 | char *tls_mask; |
411e1bfb | 8098 | |
0d4792f7 | 8099 | if (!get_tls_mask (&tls_mask, NULL, &local_syms, |
411e1bfb AM |
8100 | irela - 1, input_bfd)) |
8101 | goto error_ret_free_internal; | |
e7b938ca | 8102 | if (*tls_mask != 0) |
411e1bfb AM |
8103 | continue; |
8104 | } | |
8105 | ||
721956f4 AM |
8106 | /* Support for grouping stub sections. */ |
8107 | id_sec = htab->stub_group[section->id].link_sec; | |
8108 | ||
8109 | /* Get the name of this stub. */ | |
8110 | stub_name = ppc_stub_name (id_sec, sym_sec, hash, irela); | |
8111 | if (!stub_name) | |
8112 | goto error_ret_free_internal; | |
8113 | ||
8114 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, | |
b34976b6 | 8115 | stub_name, FALSE, FALSE); |
721956f4 AM |
8116 | if (stub_entry != NULL) |
8117 | { | |
8118 | /* The proper stub has already been created. */ | |
8119 | free (stub_name); | |
8120 | continue; | |
8121 | } | |
8122 | ||
8123 | stub_entry = ppc_add_stub (stub_name, section, htab); | |
8124 | if (stub_entry == NULL) | |
8125 | { | |
8126 | free (stub_name); | |
6cdc0ccc AM |
8127 | error_ret_free_internal: |
8128 | if (elf_section_data (section)->relocs == NULL) | |
8129 | free (internal_relocs); | |
8130 | error_ret_free_local: | |
8131 | if (local_syms != NULL | |
8132 | && (symtab_hdr->contents | |
8133 | != (unsigned char *) local_syms)) | |
8134 | free (local_syms); | |
b34976b6 | 8135 | return FALSE; |
721956f4 AM |
8136 | } |
8137 | ||
ad8e1ba5 | 8138 | stub_entry->stub_type = stub_type; |
721956f4 | 8139 | stub_entry->target_value = sym_value; |
8387904d | 8140 | stub_entry->target_section = code_sec; |
721956f4 | 8141 | stub_entry->h = hash; |
411e1bfb | 8142 | stub_entry->addend = irela->r_addend; |
b34976b6 | 8143 | stub_changed = TRUE; |
721956f4 AM |
8144 | } |
8145 | ||
8146 | /* We're done with the internal relocs, free them. */ | |
6cdc0ccc | 8147 | if (elf_section_data (section)->relocs != internal_relocs) |
1e2f5b6e | 8148 | free (internal_relocs); |
721956f4 | 8149 | } |
6cdc0ccc AM |
8150 | |
8151 | if (local_syms != NULL | |
8152 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
8153 | { | |
8154 | if (!info->keep_memory) | |
8155 | free (local_syms); | |
8156 | else | |
8157 | symtab_hdr->contents = (unsigned char *) local_syms; | |
8158 | } | |
721956f4 AM |
8159 | } |
8160 | ||
8161 | if (!stub_changed) | |
8162 | break; | |
8163 | ||
8164 | /* OK, we've added some stubs. Find out the new size of the | |
8165 | stub sections. */ | |
8166 | for (stub_sec = htab->stub_bfd->sections; | |
8167 | stub_sec != NULL; | |
8168 | stub_sec = stub_sec->next) | |
e717da7e | 8169 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0) |
eea6121a AM |
8170 | stub_sec->size = 0; |
8171 | ||
8172 | htab->brlt->size = 0; | |
63bc6f6c | 8173 | if (info->shared) |
eea6121a | 8174 | htab->relbrlt->size = 0; |
721956f4 | 8175 | |
63bc6f6c | 8176 | bfd_hash_traverse (&htab->stub_hash_table, ppc_size_one_stub, info); |
721956f4 AM |
8177 | |
8178 | /* Ask the linker to do its stuff. */ | |
8179 | (*htab->layout_sections_again) (); | |
8180 | } | |
8181 | ||
afbe61cf AM |
8182 | /* It would be nice to strip .branch_lt from the output if the |
8183 | section is empty, but it's too late. If we strip sections here, | |
8184 | the dynamic symbol table is corrupted since the section symbol | |
8185 | for the stripped section isn't written. */ | |
721956f4 | 8186 | |
b34976b6 | 8187 | return TRUE; |
721956f4 AM |
8188 | } |
8189 | ||
8190 | /* Called after we have determined section placement. If sections | |
805fc799 | 8191 | move, we'll be called again. Provide a value for TOCstart. */ |
721956f4 | 8192 | |
805fc799 | 8193 | bfd_vma |
4ce794b7 | 8194 | ppc64_elf_toc (bfd *obfd) |
721956f4 | 8195 | { |
805fc799 AM |
8196 | asection *s; |
8197 | bfd_vma TOCstart; | |
721956f4 | 8198 | |
805fc799 AM |
8199 | /* The TOC consists of sections .got, .toc, .tocbss, .plt in that |
8200 | order. The TOC starts where the first of these sections starts. */ | |
8201 | s = bfd_get_section_by_name (obfd, ".got"); | |
8202 | if (s == NULL) | |
8203 | s = bfd_get_section_by_name (obfd, ".toc"); | |
8204 | if (s == NULL) | |
8205 | s = bfd_get_section_by_name (obfd, ".tocbss"); | |
8206 | if (s == NULL) | |
8207 | s = bfd_get_section_by_name (obfd, ".plt"); | |
8208 | if (s == NULL) | |
8209 | { | |
8210 | /* This may happen for | |
8211 | o references to TOC base (SYM@toc / TOC[tc0]) without a | |
8212 | .toc directive | |
8213 | o bad linker script | |
8214 | o --gc-sections and empty TOC sections | |
8215 | ||
8216 | FIXME: Warn user? */ | |
8217 | ||
8218 | /* Look for a likely section. We probably won't even be | |
8219 | using TOCstart. */ | |
8220 | for (s = obfd->sections; s != NULL; s = s->next) | |
8221 | if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY)) | |
8222 | == (SEC_ALLOC | SEC_SMALL_DATA)) | |
8223 | break; | |
721956f4 | 8224 | if (s == NULL) |
805fc799 AM |
8225 | for (s = obfd->sections; s != NULL; s = s->next) |
8226 | if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA)) | |
8227 | == (SEC_ALLOC | SEC_SMALL_DATA)) | |
8228 | break; | |
721956f4 | 8229 | if (s == NULL) |
805fc799 AM |
8230 | for (s = obfd->sections; s != NULL; s = s->next) |
8231 | if ((s->flags & (SEC_ALLOC | SEC_READONLY)) == SEC_ALLOC) | |
8232 | break; | |
721956f4 | 8233 | if (s == NULL) |
805fc799 AM |
8234 | for (s = obfd->sections; s != NULL; s = s->next) |
8235 | if ((s->flags & SEC_ALLOC) == SEC_ALLOC) | |
8236 | break; | |
8237 | } | |
721956f4 | 8238 | |
805fc799 AM |
8239 | TOCstart = 0; |
8240 | if (s != NULL) | |
8241 | TOCstart = s->output_section->vma + s->output_offset; | |
721956f4 | 8242 | |
805fc799 | 8243 | return TOCstart; |
721956f4 AM |
8244 | } |
8245 | ||
8246 | /* Build all the stubs associated with the current output file. | |
8247 | The stubs are kept in a hash table attached to the main linker | |
8248 | hash table. This function is called via gldelf64ppc_finish. */ | |
8249 | ||
b34976b6 | 8250 | bfd_boolean |
4ce794b7 AM |
8251 | ppc64_elf_build_stubs (bfd_boolean emit_stub_syms, |
8252 | struct bfd_link_info *info, | |
8253 | char **stats) | |
5d1634d7 AM |
8254 | { |
8255 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
721956f4 | 8256 | asection *stub_sec; |
5d1634d7 | 8257 | bfd_byte *p; |
e717da7e | 8258 | int stub_sec_count = 0; |
5d1634d7 | 8259 | |
ad8e1ba5 | 8260 | htab->emit_stub_syms = emit_stub_syms; |
eea6121a AM |
8261 | |
8262 | /* Allocate memory to hold the linker stubs. */ | |
721956f4 AM |
8263 | for (stub_sec = htab->stub_bfd->sections; |
8264 | stub_sec != NULL; | |
8265 | stub_sec = stub_sec->next) | |
eea6121a AM |
8266 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0 |
8267 | && stub_sec->size != 0) | |
e717da7e | 8268 | { |
eea6121a AM |
8269 | stub_sec->contents = bfd_zalloc (htab->stub_bfd, stub_sec->size); |
8270 | if (stub_sec->contents == NULL) | |
8271 | return FALSE; | |
8272 | /* We want to check that built size is the same as calculated | |
8273 | size. rawsize is a convenient location to use. */ | |
8274 | stub_sec->rawsize = stub_sec->size; | |
8275 | stub_sec->size = 0; | |
e717da7e | 8276 | } |
5d1634d7 | 8277 | |
4ce794b7 | 8278 | if (htab->plt != NULL) |
5d1634d7 | 8279 | { |
9f951329 | 8280 | unsigned int indx; |
ad8e1ba5 | 8281 | bfd_vma plt0; |
9f951329 | 8282 | |
721956f4 | 8283 | /* Build the .glink plt call stub. */ |
4ce794b7 AM |
8284 | plt0 = (htab->plt->output_section->vma |
8285 | + htab->plt->output_offset | |
8286 | - (htab->glink->output_section->vma | |
8287 | + htab->glink->output_offset | |
ad8e1ba5 AM |
8288 | + GLINK_CALL_STUB_SIZE)); |
8289 | if (plt0 + 0x80008000 > 0xffffffff) | |
721956f4 | 8290 | { |
ad8e1ba5 AM |
8291 | (*_bfd_error_handler) (_(".glink and .plt too far apart")); |
8292 | bfd_set_error (bfd_error_bad_value); | |
8293 | return FALSE; | |
721956f4 | 8294 | } |
721956f4 | 8295 | |
97b639ba AM |
8296 | if (htab->emit_stub_syms) |
8297 | { | |
8298 | struct elf_link_hash_entry *h; | |
8299 | h = elf_link_hash_lookup (&htab->elf, "__glink", TRUE, FALSE, FALSE); | |
8300 | if (h == NULL) | |
8301 | return FALSE; | |
8302 | if (h->root.type == bfd_link_hash_new) | |
8303 | { | |
8304 | h->root.type = bfd_link_hash_defined; | |
8305 | h->root.u.def.section = htab->glink; | |
8306 | h->root.u.def.value = 0; | |
8307 | h->elf_link_hash_flags = (ELF_LINK_HASH_REF_REGULAR | |
8308 | | ELF_LINK_HASH_DEF_REGULAR | |
8309 | | ELF_LINK_HASH_REF_REGULAR_NONWEAK | |
8310 | | ELF_LINK_FORCED_LOCAL); | |
8311 | } | |
8312 | } | |
4ce794b7 AM |
8313 | p = htab->glink->contents; |
8314 | bfd_put_32 (htab->glink->owner, MFCTR_R12, p); | |
ad8e1ba5 | 8315 | p += 4; |
4ce794b7 | 8316 | bfd_put_32 (htab->glink->owner, SLDI_R11_R0_3, p); |
ad8e1ba5 | 8317 | p += 4; |
4ce794b7 | 8318 | bfd_put_32 (htab->glink->owner, ADDIC_R2_R0_32K, p); |
ad8e1ba5 | 8319 | p += 4; |
4ce794b7 | 8320 | bfd_put_32 (htab->glink->owner, SUB_R12_R12_R11, p); |
ad8e1ba5 | 8321 | p += 4; |
4ce794b7 | 8322 | bfd_put_32 (htab->glink->owner, SRADI_R2_R2_63, p); |
ad8e1ba5 | 8323 | p += 4; |
4ce794b7 | 8324 | bfd_put_32 (htab->glink->owner, SLDI_R11_R0_2, p); |
ad8e1ba5 | 8325 | p += 4; |
4ce794b7 | 8326 | bfd_put_32 (htab->glink->owner, AND_R2_R2_R11, p); |
ad8e1ba5 | 8327 | p += 4; |
4ce794b7 | 8328 | bfd_put_32 (htab->glink->owner, SUB_R12_R12_R11, p); |
ad8e1ba5 | 8329 | p += 4; |
4ce794b7 | 8330 | bfd_put_32 (htab->glink->owner, ADD_R12_R12_R2, p); |
ad8e1ba5 | 8331 | p += 4; |
4ce794b7 | 8332 | bfd_put_32 (htab->glink->owner, ADDIS_R12_R12 | PPC_HA (plt0), p); |
ad8e1ba5 | 8333 | p += 4; |
4ce794b7 | 8334 | bfd_put_32 (htab->glink->owner, LD_R11_0R12 | PPC_LO (plt0), p); |
ad8e1ba5 | 8335 | p += 4; |
4ce794b7 | 8336 | bfd_put_32 (htab->glink->owner, ADDI_R12_R12 | PPC_LO (plt0), p); |
ad8e1ba5 | 8337 | p += 4; |
4ce794b7 | 8338 | bfd_put_32 (htab->glink->owner, LD_R2_0R12 | 8, p); |
ad8e1ba5 | 8339 | p += 4; |
4ce794b7 | 8340 | bfd_put_32 (htab->glink->owner, MTCTR_R11, p); |
ad8e1ba5 | 8341 | p += 4; |
4ce794b7 | 8342 | bfd_put_32 (htab->glink->owner, LD_R11_0R12 | 16, p); |
ad8e1ba5 | 8343 | p += 4; |
4ce794b7 | 8344 | bfd_put_32 (htab->glink->owner, BCTR, p); |
ad8e1ba5 AM |
8345 | p += 4; |
8346 | ||
9f951329 AM |
8347 | /* Build the .glink lazy link call stubs. */ |
8348 | indx = 0; | |
eea6121a | 8349 | while (p < htab->glink->contents + htab->glink->size) |
9f951329 AM |
8350 | { |
8351 | if (indx < 0x8000) | |
8352 | { | |
4ce794b7 | 8353 | bfd_put_32 (htab->glink->owner, LI_R0_0 | indx, p); |
9f951329 AM |
8354 | p += 4; |
8355 | } | |
8356 | else | |
8357 | { | |
4ce794b7 | 8358 | bfd_put_32 (htab->glink->owner, LIS_R0_0 | PPC_HI (indx), p); |
9f951329 | 8359 | p += 4; |
4ce794b7 | 8360 | bfd_put_32 (htab->glink->owner, ORI_R0_R0_0 | PPC_LO (indx), p); |
9f951329 AM |
8361 | p += 4; |
8362 | } | |
4ce794b7 AM |
8363 | bfd_put_32 (htab->glink->owner, |
8364 | B_DOT | ((htab->glink->contents - p) & 0x3fffffc), p); | |
a16d5acb | 8365 | indx++; |
9f951329 AM |
8366 | p += 4; |
8367 | } | |
eea6121a | 8368 | htab->glink->rawsize = p - htab->glink->contents; |
5d1634d7 | 8369 | } |
5d1634d7 | 8370 | |
eea6121a | 8371 | if (htab->brlt->size != 0) |
721956f4 | 8372 | { |
4ce794b7 | 8373 | htab->brlt->contents = bfd_zalloc (htab->brlt->owner, |
eea6121a | 8374 | htab->brlt->size); |
4ce794b7 | 8375 | if (htab->brlt->contents == NULL) |
b34976b6 | 8376 | return FALSE; |
721956f4 | 8377 | } |
eea6121a | 8378 | if (info->shared && htab->relbrlt->size != 0) |
63bc6f6c AM |
8379 | { |
8380 | htab->relbrlt->contents = bfd_zalloc (htab->relbrlt->owner, | |
eea6121a | 8381 | htab->relbrlt->size); |
63bc6f6c AM |
8382 | if (htab->relbrlt->contents == NULL) |
8383 | return FALSE; | |
8384 | } | |
5d1634d7 | 8385 | |
721956f4 AM |
8386 | /* Build the stubs as directed by the stub hash table. */ |
8387 | bfd_hash_traverse (&htab->stub_hash_table, ppc_build_one_stub, info); | |
5d1634d7 | 8388 | |
721956f4 AM |
8389 | for (stub_sec = htab->stub_bfd->sections; |
8390 | stub_sec != NULL; | |
8391 | stub_sec = stub_sec->next) | |
e717da7e AM |
8392 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0) |
8393 | { | |
8394 | stub_sec_count += 1; | |
eea6121a | 8395 | if (stub_sec->rawsize != stub_sec->size) |
e717da7e AM |
8396 | break; |
8397 | } | |
5d1634d7 | 8398 | |
721956f4 | 8399 | if (stub_sec != NULL |
eea6121a | 8400 | || htab->glink->rawsize != htab->glink->size) |
5d1634d7 | 8401 | { |
b34976b6 | 8402 | htab->stub_error = TRUE; |
721956f4 | 8403 | (*_bfd_error_handler) (_("stubs don't match calculated size")); |
5d1634d7 | 8404 | } |
721956f4 | 8405 | |
d2a300cf AM |
8406 | if (htab->stub_error) |
8407 | return FALSE; | |
8408 | ||
8409 | if (stats != NULL) | |
8410 | { | |
8411 | *stats = bfd_malloc (500); | |
8412 | if (*stats == NULL) | |
8413 | return FALSE; | |
8414 | ||
8415 | sprintf (*stats, _("linker stubs in %u groups\n" | |
8416 | " branch %lu\n" | |
8417 | " toc adjust %lu\n" | |
8418 | " long branch %lu\n" | |
8419 | " long toc adj %lu\n" | |
8420 | " plt call %lu"), | |
e717da7e | 8421 | stub_sec_count, |
4ce794b7 AM |
8422 | htab->stub_count[ppc_stub_long_branch - 1], |
8423 | htab->stub_count[ppc_stub_long_branch_r2off - 1], | |
8424 | htab->stub_count[ppc_stub_plt_branch - 1], | |
8425 | htab->stub_count[ppc_stub_plt_branch_r2off - 1], | |
8426 | htab->stub_count[ppc_stub_plt_call - 1]); | |
d2a300cf AM |
8427 | } |
8428 | return TRUE; | |
5bd4f169 AM |
8429 | } |
8430 | ||
99877b66 AM |
8431 | /* This function undoes the changes made by add_symbol_adjust. */ |
8432 | ||
8433 | static bfd_boolean | |
8434 | undo_symbol_twiddle (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED) | |
8435 | { | |
8436 | struct ppc_link_hash_entry *eh; | |
8437 | ||
8438 | if (h->root.type == bfd_link_hash_indirect) | |
8439 | return TRUE; | |
8440 | ||
8441 | if (h->root.type == bfd_link_hash_warning) | |
8442 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
8443 | ||
8444 | eh = (struct ppc_link_hash_entry *) h; | |
8445 | if (eh->elf.root.type != bfd_link_hash_undefweak || !eh->was_undefined) | |
8446 | return TRUE; | |
8447 | ||
8448 | eh->elf.root.type = bfd_link_hash_undefined; | |
8449 | return TRUE; | |
8450 | } | |
8451 | ||
8452 | void | |
8453 | ppc64_elf_restore_symbols (struct bfd_link_info *info) | |
8454 | { | |
8455 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
8456 | elf_link_hash_traverse (&htab->elf, undo_symbol_twiddle, info); | |
8457 | } | |
8458 | ||
5bd4f169 AM |
8459 | /* The RELOCATE_SECTION function is called by the ELF backend linker |
8460 | to handle the relocations for a section. | |
8461 | ||
8462 | The relocs are always passed as Rela structures; if the section | |
8463 | actually uses Rel structures, the r_addend field will always be | |
8464 | zero. | |
8465 | ||
8466 | This function is responsible for adjust the section contents as | |
8467 | necessary, and (if using Rela relocs and generating a | |
1049f94e | 8468 | relocatable output file) adjusting the reloc addend as |
5bd4f169 AM |
8469 | necessary. |
8470 | ||
8471 | This function does not have to worry about setting the reloc | |
8472 | address or the reloc symbol index. | |
8473 | ||
8474 | LOCAL_SYMS is a pointer to the swapped in local symbols. | |
8475 | ||
8476 | LOCAL_SECTIONS is an array giving the section in the input file | |
8477 | corresponding to the st_shndx field of each local symbol. | |
8478 | ||
8479 | The global hash table entry for the global symbols can be found | |
8480 | via elf_sym_hashes (input_bfd). | |
8481 | ||
1049f94e | 8482 | When generating relocatable output, this function must handle |
5bd4f169 AM |
8483 | STB_LOCAL/STT_SECTION symbols specially. The output symbol is |
8484 | going to be the section symbol corresponding to the output | |
8485 | section, which means that the addend must be adjusted | |
8486 | accordingly. */ | |
8487 | ||
b34976b6 | 8488 | static bfd_boolean |
4ce794b7 AM |
8489 | ppc64_elf_relocate_section (bfd *output_bfd, |
8490 | struct bfd_link_info *info, | |
8491 | bfd *input_bfd, | |
8492 | asection *input_section, | |
8493 | bfd_byte *contents, | |
8494 | Elf_Internal_Rela *relocs, | |
8495 | Elf_Internal_Sym *local_syms, | |
8496 | asection **local_sections) | |
5bd4f169 | 8497 | { |
65f38f15 | 8498 | struct ppc_link_hash_table *htab; |
5bd4f169 AM |
8499 | Elf_Internal_Shdr *symtab_hdr; |
8500 | struct elf_link_hash_entry **sym_hashes; | |
5bd4f169 AM |
8501 | Elf_Internal_Rela *rel; |
8502 | Elf_Internal_Rela *relend; | |
411e1bfb AM |
8503 | Elf_Internal_Rela outrel; |
8504 | bfd_byte *loc; | |
411e1bfb | 8505 | struct got_entry **local_got_ents; |
5bd4f169 | 8506 | bfd_vma TOCstart; |
b34976b6 AM |
8507 | bfd_boolean ret = TRUE; |
8508 | bfd_boolean is_opd; | |
96e0dda4 | 8509 | /* Disabled until we sort out how ld should choose 'y' vs 'at'. */ |
b34976b6 | 8510 | bfd_boolean is_power4 = FALSE; |
5bd4f169 | 8511 | |
1049f94e | 8512 | if (info->relocatable) |
b34976b6 | 8513 | return TRUE; |
b491616a | 8514 | |
65f38f15 | 8515 | /* Initialize howto table if needed. */ |
5bd4f169 | 8516 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) |
5bd4f169 AM |
8517 | ppc_howto_init (); |
8518 | ||
65f38f15 | 8519 | htab = ppc_hash_table (info); |
411e1bfb | 8520 | local_got_ents = elf_local_got_ents (input_bfd); |
5bd4f169 | 8521 | TOCstart = elf_gp (output_bfd); |
5bd4f169 AM |
8522 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; |
8523 | sym_hashes = elf_sym_hashes (input_bfd); | |
f0abc2a1 | 8524 | is_opd = ppc64_elf_section_data (input_section)->opd.adjust != NULL; |
65f38f15 | 8525 | |
5bd4f169 AM |
8526 | rel = relocs; |
8527 | relend = relocs + input_section->reloc_count; | |
8528 | for (; rel < relend; rel++) | |
8529 | { | |
04c9666a | 8530 | enum elf_ppc64_reloc_type r_type; |
5bd4f169 AM |
8531 | bfd_vma addend; |
8532 | bfd_reloc_status_type r; | |
8533 | Elf_Internal_Sym *sym; | |
8534 | asection *sec; | |
039b3fef AM |
8535 | struct elf_link_hash_entry *h_elf; |
8536 | struct ppc_link_hash_entry *h; | |
8537 | struct ppc_link_hash_entry *fdh; | |
5bd4f169 | 8538 | const char *sym_name; |
0d4792f7 | 8539 | unsigned long r_symndx, toc_symndx; |
951fd09b | 8540 | char tls_mask, tls_gd, tls_type; |
0d4792f7 | 8541 | char sym_type; |
5bd4f169 | 8542 | bfd_vma relocation; |
b34976b6 AM |
8543 | bfd_boolean unresolved_reloc; |
8544 | bfd_boolean warned; | |
50bc7936 | 8545 | unsigned long insn, mask; |
721956f4 AM |
8546 | struct ppc_stub_hash_entry *stub_entry; |
8547 | bfd_vma max_br_offset; | |
8548 | bfd_vma from; | |
5bd4f169 | 8549 | |
4ce794b7 | 8550 | r_type = ELF64_R_TYPE (rel->r_info); |
5bd4f169 | 8551 | r_symndx = ELF64_R_SYM (rel->r_info); |
ee87f2da AM |
8552 | |
8553 | /* For old style R_PPC64_TOC relocs with a zero symbol, use the | |
8554 | symbol of the previous ADDR64 reloc. The symbol gives us the | |
8555 | proper TOC base to use. */ | |
8556 | if (rel->r_info == ELF64_R_INFO (0, R_PPC64_TOC) | |
8557 | && rel != relocs | |
8558 | && ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_ADDR64 | |
8559 | && is_opd) | |
8560 | r_symndx = ELF64_R_SYM (rel[-1].r_info); | |
8561 | ||
4ce794b7 AM |
8562 | sym = NULL; |
8563 | sec = NULL; | |
039b3fef | 8564 | h_elf = NULL; |
4ce794b7 | 8565 | sym_name = NULL; |
b34976b6 AM |
8566 | unresolved_reloc = FALSE; |
8567 | warned = FALSE; | |
65f38f15 | 8568 | |
0b13192e | 8569 | if (r_symndx < symtab_hdr->sh_info) |
5bd4f169 AM |
8570 | { |
8571 | /* It's a local symbol. */ | |
4025353c AM |
8572 | long *opd_adjust; |
8573 | ||
5bd4f169 AM |
8574 | sym = local_syms + r_symndx; |
8575 | sec = local_sections[r_symndx]; | |
411e1bfb | 8576 | sym_name = bfd_elf_local_sym_name (input_bfd, sym); |
0d4792f7 | 8577 | sym_type = ELF64_ST_TYPE (sym->st_info); |
8517fae7 | 8578 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); |
4025353c AM |
8579 | opd_adjust = get_opd_info (sec); |
8580 | if (opd_adjust != NULL) | |
1e2f5b6e | 8581 | { |
3f764659 | 8582 | long adjust = opd_adjust[(sym->st_value + rel->r_addend) / 8]; |
4025353c AM |
8583 | if (adjust == -1) |
8584 | relocation = 0; | |
8585 | else | |
8586 | relocation += adjust; | |
1e2f5b6e | 8587 | } |
5bd4f169 AM |
8588 | } |
8589 | else | |
8590 | { | |
b2a8e766 AM |
8591 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
8592 | r_symndx, symtab_hdr, sym_hashes, | |
039b3fef | 8593 | h_elf, sec, relocation, |
b2a8e766 | 8594 | unresolved_reloc, warned); |
039b3fef AM |
8595 | sym_name = h_elf->root.root.string; |
8596 | sym_type = h_elf->type; | |
5bd4f169 | 8597 | } |
039b3fef | 8598 | h = (struct ppc_link_hash_entry *) h_elf; |
5bd4f169 | 8599 | |
951fd09b AM |
8600 | /* TLS optimizations. Replace instruction sequences and relocs |
8601 | based on information we collected in tls_optimize. We edit | |
8602 | RELOCS so that --emit-relocs will output something sensible | |
8603 | for the final instruction stream. */ | |
8604 | tls_mask = 0; | |
8605 | tls_gd = 0; | |
0d4792f7 | 8606 | toc_symndx = 0; |
d881513a | 8607 | if (IS_PPC64_TLS_RELOC (r_type)) |
411e1bfb AM |
8608 | { |
8609 | if (h != NULL) | |
039b3fef | 8610 | tls_mask = h->tls_mask; |
411e1bfb AM |
8611 | else if (local_got_ents != NULL) |
8612 | { | |
e7b938ca AM |
8613 | char *lgot_masks; |
8614 | lgot_masks = (char *) (local_got_ents + symtab_hdr->sh_info); | |
8615 | tls_mask = lgot_masks[r_symndx]; | |
411e1bfb | 8616 | } |
0d4792f7 AM |
8617 | if (tls_mask == 0 && r_type == R_PPC64_TLS) |
8618 | { | |
8619 | /* Check for toc tls entries. */ | |
8620 | char *toc_tls; | |
8621 | ||
8622 | if (!get_tls_mask (&toc_tls, &toc_symndx, &local_syms, | |
8623 | rel, input_bfd)) | |
8624 | return FALSE; | |
8625 | ||
8626 | if (toc_tls) | |
8627 | tls_mask = *toc_tls; | |
8628 | } | |
8629 | } | |
8630 | ||
8631 | /* Check that tls relocs are used with tls syms, and non-tls | |
8632 | relocs are used with non-tls syms. */ | |
8633 | if (r_symndx != 0 | |
8634 | && r_type != R_PPC64_NONE | |
8635 | && (h == NULL | |
039b3fef AM |
8636 | || h->elf.root.type == bfd_link_hash_defined |
8637 | || h->elf.root.type == bfd_link_hash_defweak) | |
0d4792f7 AM |
8638 | && IS_PPC64_TLS_RELOC (r_type) != (sym_type == STT_TLS)) |
8639 | { | |
8640 | if (r_type == R_PPC64_TLS && tls_mask != 0) | |
8641 | /* R_PPC64_TLS is OK against a symbol in the TOC. */ | |
8642 | ; | |
8643 | else | |
8644 | (*_bfd_error_handler) | |
8645 | (sym_type == STT_TLS | |
d003868e AM |
8646 | ? _("%B(%A+0x%lx): %s used with TLS symbol %s") |
8647 | : _("%B(%A+0x%lx): %s used with non-TLS symbol %s"), | |
8648 | input_bfd, | |
8649 | input_section, | |
0d4792f7 AM |
8650 | (long) rel->r_offset, |
8651 | ppc64_elf_howto_table[r_type]->name, | |
8652 | sym_name); | |
411e1bfb AM |
8653 | } |
8654 | ||
8655 | /* Ensure reloc mapping code below stays sane. */ | |
8656 | if (R_PPC64_TOC16_LO_DS != R_PPC64_TOC16_DS + 1 | |
8657 | || R_PPC64_TOC16_LO != R_PPC64_TOC16 + 1 | |
8658 | || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TLSGD16 & 3) | |
8659 | || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TLSGD16_LO & 3) | |
8660 | || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TLSGD16_HI & 3) | |
8661 | || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TLSGD16_HA & 3) | |
8662 | || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TPREL16_DS & 3) | |
8663 | || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TPREL16_LO_DS & 3) | |
8664 | || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TPREL16_HI & 3) | |
8665 | || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TPREL16_HA & 3)) | |
8666 | abort (); | |
0d4792f7 | 8667 | |
411e1bfb AM |
8668 | switch (r_type) |
8669 | { | |
8670 | default: | |
411e1bfb AM |
8671 | break; |
8672 | ||
8673 | case R_PPC64_TOC16: | |
8674 | case R_PPC64_TOC16_LO: | |
8675 | case R_PPC64_TOC16_DS: | |
8676 | case R_PPC64_TOC16_LO_DS: | |
411e1bfb AM |
8677 | { |
8678 | /* Check for toc tls entries. */ | |
8679 | char *toc_tls; | |
951fd09b | 8680 | int retval; |
411e1bfb | 8681 | |
0d4792f7 AM |
8682 | retval = get_tls_mask (&toc_tls, &toc_symndx, &local_syms, |
8683 | rel, input_bfd); | |
951fd09b | 8684 | if (retval == 0) |
411e1bfb AM |
8685 | return FALSE; |
8686 | ||
8687 | if (toc_tls) | |
8688 | { | |
951fd09b | 8689 | tls_mask = *toc_tls; |
411e1bfb AM |
8690 | if (r_type == R_PPC64_TOC16_DS |
8691 | || r_type == R_PPC64_TOC16_LO_DS) | |
81407a69 AM |
8692 | { |
8693 | if (tls_mask != 0 | |
8694 | && (tls_mask & (TLS_DTPREL | TLS_TPREL)) == 0) | |
8695 | goto toctprel; | |
8696 | } | |
411e1bfb | 8697 | else |
951fd09b AM |
8698 | { |
8699 | /* If we found a GD reloc pair, then we might be | |
8700 | doing a GD->IE transition. */ | |
8701 | if (retval == 2) | |
8702 | { | |
8703 | tls_gd = TLS_TPRELGD; | |
8704 | if (tls_mask != 0 && (tls_mask & TLS_GD) == 0) | |
8705 | goto tls_get_addr_check; | |
8706 | } | |
8707 | else if (retval == 3) | |
8708 | { | |
8709 | if (tls_mask != 0 && (tls_mask & TLS_LD) == 0) | |
8710 | goto tls_get_addr_check; | |
8711 | } | |
8712 | } | |
411e1bfb AM |
8713 | } |
8714 | } | |
8715 | break; | |
8716 | ||
8717 | case R_PPC64_GOT_TPREL16_DS: | |
8718 | case R_PPC64_GOT_TPREL16_LO_DS: | |
951fd09b AM |
8719 | if (tls_mask != 0 |
8720 | && (tls_mask & TLS_TPREL) == 0) | |
411e1bfb | 8721 | { |
81407a69 | 8722 | toctprel: |
411e1bfb AM |
8723 | insn = bfd_get_32 (output_bfd, contents + rel->r_offset - 2); |
8724 | insn &= 31 << 21; | |
8725 | insn |= 0x3c0d0000; /* addis 0,13,0 */ | |
8726 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset - 2); | |
8727 | r_type = R_PPC64_TPREL16_HA; | |
0d4792f7 AM |
8728 | if (toc_symndx != 0) |
8729 | { | |
8730 | rel->r_info = ELF64_R_INFO (toc_symndx, r_type); | |
8731 | /* We changed the symbol. Start over in order to | |
8732 | get h, sym, sec etc. right. */ | |
8733 | rel--; | |
8734 | continue; | |
8735 | } | |
8736 | else | |
8737 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
411e1bfb AM |
8738 | } |
8739 | break; | |
8740 | ||
8741 | case R_PPC64_TLS: | |
951fd09b AM |
8742 | if (tls_mask != 0 |
8743 | && (tls_mask & TLS_TPREL) == 0) | |
411e1bfb | 8744 | { |
50bc7936 | 8745 | bfd_vma rtra; |
411e1bfb | 8746 | insn = bfd_get_32 (output_bfd, contents + rel->r_offset); |
772119ce | 8747 | if ((insn & ((0x3f << 26) | (31 << 11))) |
411e1bfb AM |
8748 | == ((31 << 26) | (13 << 11))) |
8749 | rtra = insn & ((1 << 26) - (1 << 16)); | |
772119ce | 8750 | else if ((insn & ((0x3f << 26) | (31 << 16))) |
411e1bfb AM |
8751 | == ((31 << 26) | (13 << 16))) |
8752 | rtra = (insn & (31 << 21)) | ((insn & (31 << 11)) << 5); | |
8753 | else | |
8754 | abort (); | |
8755 | if ((insn & ((1 << 11) - (1 << 1))) == 266 << 1) | |
8756 | /* add -> addi. */ | |
8757 | insn = 14 << 26; | |
8758 | else if ((insn & (31 << 1)) == 23 << 1 | |
8759 | && ((insn & (31 << 6)) < 14 << 6 | |
8760 | || ((insn & (31 << 6)) >= 16 << 6 | |
8761 | && (insn & (31 << 6)) < 24 << 6))) | |
8762 | /* load and store indexed -> dform. */ | |
8763 | insn = (32 | ((insn >> 6) & 31)) << 26; | |
8764 | else if ((insn & (31 << 1)) == 21 << 1 | |
8765 | && (insn & (0x1a << 6)) == 0) | |
8766 | /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */ | |
8767 | insn = (((58 | ((insn >> 6) & 4)) << 26) | |
8768 | | ((insn >> 6) & 1)); | |
8769 | else if ((insn & (31 << 1)) == 21 << 1 | |
8770 | && (insn & ((1 << 11) - (1 << 1))) == 341 << 1) | |
8771 | /* lwax -> lwa. */ | |
8772 | insn = (58 << 26) | 2; | |
8773 | else | |
8774 | abort (); | |
8775 | insn |= rtra; | |
8776 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset); | |
411e1bfb AM |
8777 | /* Was PPC64_TLS which sits on insn boundary, now |
8778 | PPC64_TPREL16_LO which is at insn+2. */ | |
8779 | rel->r_offset += 2; | |
0d4792f7 AM |
8780 | r_type = R_PPC64_TPREL16_LO; |
8781 | if (toc_symndx != 0) | |
8782 | { | |
8783 | rel->r_info = ELF64_R_INFO (toc_symndx, r_type); | |
8784 | /* We changed the symbol. Start over in order to | |
8785 | get h, sym, sec etc. right. */ | |
8786 | rel--; | |
8787 | continue; | |
8788 | } | |
8789 | else | |
8790 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
411e1bfb AM |
8791 | } |
8792 | break; | |
8793 | ||
411e1bfb AM |
8794 | case R_PPC64_GOT_TLSGD16_HI: |
8795 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b AM |
8796 | tls_gd = TLS_TPRELGD; |
8797 | if (tls_mask != 0 && (tls_mask & TLS_GD) == 0) | |
8798 | goto tls_gdld_hi; | |
8799 | break; | |
8800 | ||
411e1bfb AM |
8801 | case R_PPC64_GOT_TLSLD16_HI: |
8802 | case R_PPC64_GOT_TLSLD16_HA: | |
951fd09b | 8803 | if (tls_mask != 0 && (tls_mask & TLS_LD) == 0) |
411e1bfb | 8804 | { |
951fd09b AM |
8805 | tls_gdld_hi: |
8806 | if ((tls_mask & tls_gd) != 0) | |
8807 | r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3) | |
8808 | + R_PPC64_GOT_TPREL16_DS); | |
8809 | else | |
411e1bfb | 8810 | { |
951fd09b AM |
8811 | bfd_put_32 (output_bfd, NOP, contents + rel->r_offset); |
8812 | rel->r_offset -= 2; | |
8813 | r_type = R_PPC64_NONE; | |
411e1bfb | 8814 | } |
951fd09b | 8815 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); |
411e1bfb AM |
8816 | } |
8817 | break; | |
8818 | ||
951fd09b AM |
8819 | case R_PPC64_GOT_TLSGD16: |
8820 | case R_PPC64_GOT_TLSGD16_LO: | |
8821 | tls_gd = TLS_TPRELGD; | |
8822 | if (tls_mask != 0 && (tls_mask & TLS_GD) == 0) | |
8823 | goto tls_get_addr_check; | |
8824 | break; | |
411e1bfb | 8825 | |
951fd09b AM |
8826 | case R_PPC64_GOT_TLSLD16: |
8827 | case R_PPC64_GOT_TLSLD16_LO: | |
8828 | if (tls_mask != 0 && (tls_mask & TLS_LD) == 0) | |
8829 | { | |
8830 | tls_get_addr_check: | |
8831 | if (rel + 1 < relend) | |
411e1bfb | 8832 | { |
951fd09b AM |
8833 | enum elf_ppc64_reloc_type r_type2; |
8834 | unsigned long r_symndx2; | |
8835 | struct elf_link_hash_entry *h2; | |
8836 | bfd_vma insn1, insn2, insn3; | |
8837 | bfd_vma offset; | |
8838 | ||
8839 | /* The next instruction should be a call to | |
8840 | __tls_get_addr. Peek at the reloc to be sure. */ | |
4ce794b7 | 8841 | r_type2 = ELF64_R_TYPE (rel[1].r_info); |
951fd09b AM |
8842 | r_symndx2 = ELF64_R_SYM (rel[1].r_info); |
8843 | if (r_symndx2 < symtab_hdr->sh_info | |
8844 | || (r_type2 != R_PPC64_REL14 | |
8845 | && r_type2 != R_PPC64_REL14_BRTAKEN | |
8846 | && r_type2 != R_PPC64_REL14_BRNTAKEN | |
8847 | && r_type2 != R_PPC64_REL24)) | |
8848 | break; | |
8849 | ||
8850 | h2 = sym_hashes[r_symndx2 - symtab_hdr->sh_info]; | |
8851 | while (h2->root.type == bfd_link_hash_indirect | |
8852 | || h2->root.type == bfd_link_hash_warning) | |
8853 | h2 = (struct elf_link_hash_entry *) h2->root.u.i.link; | |
8387904d AM |
8854 | if (h2 == NULL || (h2 != &htab->tls_get_addr->elf |
8855 | && h2 != &htab->tls_get_addr_fd->elf)) | |
951fd09b AM |
8856 | break; |
8857 | ||
8858 | /* OK, it checks out. Replace the call. */ | |
8859 | offset = rel[1].r_offset; | |
8860 | insn1 = bfd_get_32 (output_bfd, | |
8861 | contents + rel->r_offset - 2); | |
8862 | insn3 = bfd_get_32 (output_bfd, | |
8863 | contents + offset + 4); | |
8864 | if ((tls_mask & tls_gd) != 0) | |
411e1bfb | 8865 | { |
951fd09b AM |
8866 | /* IE */ |
8867 | insn1 &= (1 << 26) - (1 << 2); | |
8868 | insn1 |= 58 << 26; /* ld */ | |
8869 | insn2 = 0x7c636a14; /* add 3,3,13 */ | |
8870 | rel[1].r_info = ELF64_R_INFO (r_symndx2, R_PPC64_NONE); | |
8871 | if ((tls_mask & TLS_EXPLICIT) == 0) | |
8872 | r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3) | |
8873 | + R_PPC64_GOT_TPREL16_DS); | |
8874 | else | |
8875 | r_type += R_PPC64_TOC16_DS - R_PPC64_TOC16; | |
8876 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
411e1bfb AM |
8877 | } |
8878 | else | |
951fd09b AM |
8879 | { |
8880 | /* LE */ | |
8881 | insn1 = 0x3c6d0000; /* addis 3,13,0 */ | |
8882 | insn2 = 0x38630000; /* addi 3,3,0 */ | |
8883 | if (tls_gd == 0) | |
8884 | { | |
8885 | /* Was an LD reloc. */ | |
8886 | r_symndx = 0; | |
e1918d23 AM |
8887 | rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET; |
8888 | rel[1].r_addend = htab->elf.tls_sec->vma + DTP_OFFSET; | |
951fd09b | 8889 | } |
0d4792f7 AM |
8890 | else if (toc_symndx != 0) |
8891 | r_symndx = toc_symndx; | |
951fd09b AM |
8892 | r_type = R_PPC64_TPREL16_HA; |
8893 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
8894 | rel[1].r_info = ELF64_R_INFO (r_symndx, | |
8895 | R_PPC64_TPREL16_LO); | |
8896 | rel[1].r_offset += 2; | |
8897 | } | |
8898 | if (insn3 == NOP | |
8899 | || insn3 == CROR_151515 || insn3 == CROR_313131) | |
8900 | { | |
8901 | insn3 = insn2; | |
8902 | insn2 = NOP; | |
8903 | rel[1].r_offset += 4; | |
8904 | } | |
8905 | bfd_put_32 (output_bfd, insn1, contents + rel->r_offset - 2); | |
8906 | bfd_put_32 (output_bfd, insn2, contents + offset); | |
8907 | bfd_put_32 (output_bfd, insn3, contents + offset + 4); | |
0d4792f7 | 8908 | if (tls_gd == 0 || toc_symndx != 0) |
951fd09b | 8909 | { |
0d4792f7 AM |
8910 | /* We changed the symbol. Start over in order |
8911 | to get h, sym, sec etc. right. */ | |
951fd09b AM |
8912 | rel--; |
8913 | continue; | |
8914 | } | |
411e1bfb | 8915 | } |
411e1bfb | 8916 | } |
411e1bfb AM |
8917 | break; |
8918 | ||
8919 | case R_PPC64_DTPMOD64: | |
951fd09b AM |
8920 | if (rel + 1 < relend |
8921 | && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64) | |
8922 | && rel[1].r_offset == rel->r_offset + 8) | |
411e1bfb | 8923 | { |
951fd09b AM |
8924 | if ((tls_mask & TLS_GD) == 0) |
8925 | { | |
8926 | rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_NONE); | |
8927 | if ((tls_mask & TLS_TPRELGD) != 0) | |
8928 | r_type = R_PPC64_TPREL64; | |
8929 | else | |
8930 | { | |
4ce794b7 | 8931 | bfd_put_64 (output_bfd, 1, contents + rel->r_offset); |
951fd09b AM |
8932 | r_type = R_PPC64_NONE; |
8933 | } | |
8934 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
8935 | } | |
8936 | } | |
8937 | else | |
8938 | { | |
8939 | if ((tls_mask & TLS_LD) == 0) | |
411e1bfb | 8940 | { |
4ce794b7 | 8941 | bfd_put_64 (output_bfd, 1, contents + rel->r_offset); |
411e1bfb | 8942 | r_type = R_PPC64_NONE; |
951fd09b | 8943 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); |
411e1bfb | 8944 | } |
411e1bfb AM |
8945 | } |
8946 | break; | |
8947 | ||
8948 | case R_PPC64_TPREL64: | |
951fd09b | 8949 | if ((tls_mask & TLS_TPREL) == 0) |
411e1bfb AM |
8950 | { |
8951 | r_type = R_PPC64_NONE; | |
8952 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
8953 | } | |
8954 | break; | |
8955 | } | |
8956 | ||
8957 | /* Handle other relocations that tweak non-addend part of insn. */ | |
86c76c7b | 8958 | insn = 0; |
b25116a9 AM |
8959 | max_br_offset = 1 << 25; |
8960 | addend = rel->r_addend; | |
65f38f15 | 8961 | switch (r_type) |
5bd4f169 AM |
8962 | { |
8963 | default: | |
65f38f15 | 8964 | break; |
5bd4f169 | 8965 | |
65f38f15 AM |
8966 | /* Branch taken prediction relocations. */ |
8967 | case R_PPC64_ADDR14_BRTAKEN: | |
8968 | case R_PPC64_REL14_BRTAKEN: | |
cedb70c5 KH |
8969 | insn = 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */ |
8970 | /* Fall thru. */ | |
65f38f15 | 8971 | |
86c76c7b | 8972 | /* Branch not taken prediction relocations. */ |
65f38f15 AM |
8973 | case R_PPC64_ADDR14_BRNTAKEN: |
8974 | case R_PPC64_REL14_BRNTAKEN: | |
411e1bfb AM |
8975 | insn |= bfd_get_32 (output_bfd, |
8976 | contents + rel->r_offset) & ~(0x01 << 21); | |
b25116a9 | 8977 | /* Fall thru. */ |
86c76c7b | 8978 | |
b25116a9 AM |
8979 | case R_PPC64_REL14: |
8980 | max_br_offset = 1 << 15; | |
8981 | /* Fall thru. */ | |
5bd4f169 | 8982 | |
65f38f15 | 8983 | case R_PPC64_REL24: |
ad8e1ba5 AM |
8984 | /* Calls to functions with a different TOC, such as calls to |
8985 | shared objects, need to alter the TOC pointer. This is | |
8986 | done using a linkage stub. A REL24 branching to these | |
8987 | linkage stubs needs to be followed by a nop, as the nop | |
8988 | will be replaced with an instruction to restore the TOC | |
8989 | base pointer. */ | |
b25116a9 | 8990 | stub_entry = NULL; |
8387904d | 8991 | fdh = h; |
ad8e1ba5 | 8992 | if (((h != NULL |
039b3fef AM |
8993 | && (((fdh = h->oh) != NULL |
8994 | && fdh->elf.plt.plist != NULL) | |
8995 | || (fdh = h)->elf.plt.plist != NULL)) | |
8387904d | 8996 | || (sec != NULL |
ad8e1ba5 | 8997 | && sec->output_section != NULL |
b25116a9 | 8998 | && sec->id <= htab->top_id |
ad8e1ba5 AM |
8999 | && (htab->stub_group[sec->id].toc_off |
9000 | != htab->stub_group[input_section->id].toc_off))) | |
721956f4 | 9001 | && (stub_entry = ppc_get_stub_entry (input_section, sec, fdh, |
ad8e1ba5 AM |
9002 | rel, htab)) != NULL |
9003 | && (stub_entry->stub_type == ppc_stub_plt_call | |
9004 | || stub_entry->stub_type == ppc_stub_plt_branch_r2off | |
9005 | || stub_entry->stub_type == ppc_stub_long_branch_r2off)) | |
41bd81ab | 9006 | { |
b25116a9 | 9007 | bfd_boolean can_plt_call = FALSE; |
721956f4 | 9008 | |
eea6121a | 9009 | if (rel->r_offset + 8 <= input_section->size) |
41bd81ab | 9010 | { |
b25116a9 AM |
9011 | unsigned long nop; |
9012 | nop = bfd_get_32 (input_bfd, contents + rel->r_offset + 4); | |
9013 | if (nop == NOP | |
9014 | || nop == CROR_151515 || nop == CROR_313131) | |
41bd81ab | 9015 | { |
4ce794b7 | 9016 | bfd_put_32 (input_bfd, LD_R2_40R1, |
411e1bfb | 9017 | contents + rel->r_offset + 4); |
b25116a9 | 9018 | can_plt_call = TRUE; |
41bd81ab | 9019 | } |
5bd4f169 | 9020 | } |
721956f4 AM |
9021 | |
9022 | if (!can_plt_call) | |
9023 | { | |
ad8e1ba5 AM |
9024 | if (stub_entry->stub_type == ppc_stub_plt_call) |
9025 | { | |
9026 | /* If this is a plain branch rather than a branch | |
9027 | and link, don't require a nop. */ | |
b25116a9 AM |
9028 | unsigned long br; |
9029 | br = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
9030 | if ((br & 1) == 0) | |
9031 | can_plt_call = TRUE; | |
ad8e1ba5 | 9032 | } |
6ab189d5 | 9033 | else if (h != NULL |
039b3fef | 9034 | && strcmp (h->elf.root.root.string, |
6ab189d5 AM |
9035 | ".__libc_start_main") == 0) |
9036 | { | |
9037 | /* Allow crt1 branch to go via a toc adjusting stub. */ | |
b25116a9 | 9038 | can_plt_call = TRUE; |
6ab189d5 | 9039 | } |
ad8e1ba5 AM |
9040 | else |
9041 | { | |
9042 | if (strcmp (input_section->output_section->name, | |
9043 | ".init") == 0 | |
9044 | || strcmp (input_section->output_section->name, | |
9045 | ".fini") == 0) | |
9046 | (*_bfd_error_handler) | |
d003868e | 9047 | (_("%B(%A+0x%lx): automatic multiple TOCs " |
ad8e1ba5 AM |
9048 | "not supported using your crt files; " |
9049 | "recompile with -mminimal-toc or upgrade gcc"), | |
d003868e AM |
9050 | input_bfd, |
9051 | input_section, | |
ad8e1ba5 AM |
9052 | (long) rel->r_offset); |
9053 | else | |
9054 | (*_bfd_error_handler) | |
d003868e | 9055 | (_("%B(%A+0x%lx): sibling call optimization to `%s' " |
ad8e1ba5 AM |
9056 | "does not allow automatic multiple TOCs; " |
9057 | "recompile with -mminimal-toc or " | |
9058 | "-fno-optimize-sibling-calls, " | |
9059 | "or make `%s' extern"), | |
d003868e AM |
9060 | input_bfd, |
9061 | input_section, | |
ad8e1ba5 AM |
9062 | (long) rel->r_offset, |
9063 | sym_name, | |
9064 | sym_name); | |
9065 | bfd_set_error (bfd_error_bad_value); | |
9066 | ret = FALSE; | |
9067 | } | |
721956f4 AM |
9068 | } |
9069 | ||
b25116a9 AM |
9070 | if (can_plt_call |
9071 | && stub_entry->stub_type == ppc_stub_plt_call) | |
9072 | unresolved_reloc = FALSE; | |
9073 | } | |
9074 | ||
8387904d AM |
9075 | if (stub_entry == NULL |
9076 | && get_opd_info (sec) != NULL) | |
9077 | { | |
9078 | /* The branch destination is the value of the opd entry. */ | |
9079 | bfd_vma off = (relocation - sec->output_section->vma | |
9080 | - sec->output_offset + rel->r_addend); | |
9081 | bfd_vma dest = opd_entry_value (sec, off, NULL, NULL); | |
9082 | if (dest != (bfd_vma) -1) | |
9083 | { | |
9084 | relocation = dest; | |
9085 | addend = 0; | |
9086 | } | |
9087 | } | |
9088 | ||
b25116a9 AM |
9089 | /* If the branch is out of reach we ought to have a long |
9090 | branch stub. */ | |
9091 | from = (rel->r_offset | |
9092 | + input_section->output_offset | |
9093 | + input_section->output_section->vma); | |
9094 | ||
9095 | if (stub_entry == NULL | |
9096 | && (relocation + rel->r_addend - from + max_br_offset | |
9097 | >= 2 * max_br_offset) | |
9098 | && r_type != R_PPC64_ADDR14_BRTAKEN | |
9099 | && r_type != R_PPC64_ADDR14_BRNTAKEN) | |
039b3fef AM |
9100 | stub_entry = ppc_get_stub_entry (input_section, sec, h, rel, |
9101 | htab); | |
b25116a9 AM |
9102 | |
9103 | if (stub_entry != NULL) | |
9104 | { | |
9105 | /* Munge up the value and addend so that we call the stub | |
9106 | rather than the procedure directly. */ | |
9107 | relocation = (stub_entry->stub_offset | |
9108 | + stub_entry->stub_sec->output_offset | |
9109 | + stub_entry->stub_sec->output_section->vma); | |
9110 | addend = 0; | |
9111 | } | |
9112 | ||
9113 | if (insn != 0) | |
9114 | { | |
9115 | if (is_power4) | |
721956f4 | 9116 | { |
b25116a9 AM |
9117 | /* Set 'a' bit. This is 0b00010 in BO field for branch |
9118 | on CR(BI) insns (BO == 001at or 011at), and 0b01000 | |
9119 | for branch on CTR insns (BO == 1a00t or 1a01t). */ | |
9120 | if ((insn & (0x14 << 21)) == (0x04 << 21)) | |
9121 | insn |= 0x02 << 21; | |
9122 | else if ((insn & (0x14 << 21)) == (0x10 << 21)) | |
9123 | insn |= 0x08 << 21; | |
9124 | else | |
9125 | break; | |
9126 | } | |
9127 | else | |
9128 | { | |
9129 | /* Invert 'y' bit if not the default. */ | |
9130 | if ((bfd_signed_vma) (relocation + rel->r_addend - from) < 0) | |
9131 | insn ^= 0x01 << 21; | |
721956f4 | 9132 | } |
b25116a9 AM |
9133 | |
9134 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset); | |
5bd4f169 | 9135 | } |
e86ce104 | 9136 | |
06da1e8e AM |
9137 | /* NOP out calls to undefined weak functions. |
9138 | We can thus call a weak function without first | |
9139 | checking whether the function is defined. */ | |
b25116a9 | 9140 | else if (h != NULL |
039b3fef | 9141 | && h->elf.root.type == bfd_link_hash_undefweak |
b25116a9 AM |
9142 | && r_type == R_PPC64_REL24 |
9143 | && relocation == 0 | |
9144 | && rel->r_addend == 0) | |
e86ce104 | 9145 | { |
06da1e8e AM |
9146 | bfd_put_32 (output_bfd, NOP, contents + rel->r_offset); |
9147 | continue; | |
e86ce104 | 9148 | } |
65f38f15 AM |
9149 | break; |
9150 | } | |
5bd4f169 | 9151 | |
65f38f15 | 9152 | /* Set `addend'. */ |
411e1bfb | 9153 | tls_type = 0; |
65f38f15 AM |
9154 | switch (r_type) |
9155 | { | |
9156 | default: | |
9157 | (*_bfd_error_handler) | |
d003868e AM |
9158 | (_("%B: unknown relocation type %d for symbol %s"), |
9159 | input_bfd, (int) r_type, sym_name); | |
5bd4f169 | 9160 | |
65f38f15 | 9161 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 9162 | ret = FALSE; |
65f38f15 | 9163 | continue; |
5bd4f169 | 9164 | |
65f38f15 | 9165 | case R_PPC64_NONE: |
411e1bfb | 9166 | case R_PPC64_TLS: |
04c9666a AM |
9167 | case R_PPC64_GNU_VTINHERIT: |
9168 | case R_PPC64_GNU_VTENTRY: | |
65f38f15 | 9169 | continue; |
5bd4f169 AM |
9170 | |
9171 | /* GOT16 relocations. Like an ADDR16 using the symbol's | |
9172 | address in the GOT as relocation value instead of the | |
411e1bfb | 9173 | symbol's value itself. Also, create a GOT entry for the |
5bd4f169 | 9174 | symbol and put the symbol value there. */ |
411e1bfb AM |
9175 | case R_PPC64_GOT_TLSGD16: |
9176 | case R_PPC64_GOT_TLSGD16_LO: | |
9177 | case R_PPC64_GOT_TLSGD16_HI: | |
9178 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b | 9179 | tls_type = TLS_TLS | TLS_GD; |
411e1bfb AM |
9180 | goto dogot; |
9181 | ||
9182 | case R_PPC64_GOT_TLSLD16: | |
9183 | case R_PPC64_GOT_TLSLD16_LO: | |
9184 | case R_PPC64_GOT_TLSLD16_HI: | |
9185 | case R_PPC64_GOT_TLSLD16_HA: | |
951fd09b | 9186 | tls_type = TLS_TLS | TLS_LD; |
411e1bfb AM |
9187 | goto dogot; |
9188 | ||
9189 | case R_PPC64_GOT_TPREL16_DS: | |
9190 | case R_PPC64_GOT_TPREL16_LO_DS: | |
9191 | case R_PPC64_GOT_TPREL16_HI: | |
9192 | case R_PPC64_GOT_TPREL16_HA: | |
9193 | tls_type = TLS_TLS | TLS_TPREL; | |
9194 | goto dogot; | |
9195 | ||
9196 | case R_PPC64_GOT_DTPREL16_DS: | |
9197 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
9198 | case R_PPC64_GOT_DTPREL16_HI: | |
9199 | case R_PPC64_GOT_DTPREL16_HA: | |
9200 | tls_type = TLS_TLS | TLS_DTPREL; | |
9201 | goto dogot; | |
9202 | ||
65f38f15 AM |
9203 | case R_PPC64_GOT16: |
9204 | case R_PPC64_GOT16_LO: | |
9205 | case R_PPC64_GOT16_HI: | |
9206 | case R_PPC64_GOT16_HA: | |
9207 | case R_PPC64_GOT16_DS: | |
9208 | case R_PPC64_GOT16_LO_DS: | |
411e1bfb | 9209 | dogot: |
5bd4f169 AM |
9210 | { |
9211 | /* Relocation is to the entry for this symbol in the global | |
9212 | offset table. */ | |
e717da7e | 9213 | asection *got; |
d881513a | 9214 | bfd_vma *offp; |
5bd4f169 | 9215 | bfd_vma off; |
d881513a | 9216 | unsigned long indx = 0; |
65f38f15 | 9217 | |
d881513a AM |
9218 | if (tls_type == (TLS_TLS | TLS_LD) |
9219 | && (h == NULL | |
039b3fef AM |
9220 | || (h->elf.elf_link_hash_flags |
9221 | & ELF_LINK_HASH_DEF_DYNAMIC) == 0)) | |
e717da7e | 9222 | offp = &ppc64_tlsld_got (input_bfd)->offset; |
411e1bfb | 9223 | else |
5bd4f169 | 9224 | { |
d881513a | 9225 | struct got_entry *ent; |
5bd4f169 | 9226 | |
d881513a AM |
9227 | if (h != NULL) |
9228 | { | |
9229 | bfd_boolean dyn = htab->elf.dynamic_sections_created; | |
039b3fef AM |
9230 | if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, |
9231 | &h->elf) | |
d881513a | 9232 | || (info->shared |
039b3fef | 9233 | && SYMBOL_REFERENCES_LOCAL (info, &h->elf))) |
d881513a AM |
9234 | /* This is actually a static link, or it is a |
9235 | -Bsymbolic link and the symbol is defined | |
9236 | locally, or the symbol was forced to be local | |
9237 | because of a version file. */ | |
9238 | ; | |
9239 | else | |
9240 | { | |
039b3fef | 9241 | indx = h->elf.dynindx; |
d881513a AM |
9242 | unresolved_reloc = FALSE; |
9243 | } | |
039b3fef | 9244 | ent = h->elf.got.glist; |
d881513a | 9245 | } |
411e1bfb | 9246 | else |
5bd4f169 | 9247 | { |
d881513a AM |
9248 | if (local_got_ents == NULL) |
9249 | abort (); | |
9250 | ent = local_got_ents[r_symndx]; | |
5bd4f169 | 9251 | } |
d881513a AM |
9252 | |
9253 | for (; ent != NULL; ent = ent->next) | |
9254 | if (ent->addend == rel->r_addend | |
e717da7e | 9255 | && ent->owner == input_bfd |
d881513a AM |
9256 | && ent->tls_type == tls_type) |
9257 | break; | |
9258 | if (ent == NULL) | |
9259 | abort (); | |
9260 | offp = &ent->got.offset; | |
5bd4f169 | 9261 | } |
411e1bfb | 9262 | |
e717da7e AM |
9263 | got = ppc64_elf_tdata (input_bfd)->got; |
9264 | if (got == NULL) | |
9265 | abort (); | |
9266 | ||
411e1bfb AM |
9267 | /* The offset must always be a multiple of 8. We use the |
9268 | least significant bit to record whether we have already | |
9269 | processed this entry. */ | |
d881513a | 9270 | off = *offp; |
411e1bfb AM |
9271 | if ((off & 1) != 0) |
9272 | off &= ~1; | |
5bd4f169 AM |
9273 | else |
9274 | { | |
411e1bfb AM |
9275 | /* Generate relocs for the dynamic linker, except in |
9276 | the case of TLSLD where we'll use one entry per | |
9277 | module. */ | |
e717da7e AM |
9278 | asection *relgot = ppc64_elf_tdata (input_bfd)->relgot; |
9279 | ||
d881513a | 9280 | *offp = off | 1; |
4e795f50 AM |
9281 | if ((info->shared || indx != 0) |
9282 | && (h == NULL | |
039b3fef AM |
9283 | || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT |
9284 | || h->elf.root.type != bfd_link_hash_undefweak)) | |
5bd4f169 | 9285 | { |
e717da7e AM |
9286 | outrel.r_offset = (got->output_section->vma |
9287 | + got->output_offset | |
411e1bfb | 9288 | + off); |
81407a69 | 9289 | outrel.r_addend = rel->r_addend; |
d881513a | 9290 | if (tls_type & (TLS_LD | TLS_GD)) |
5bd4f169 | 9291 | { |
411e1bfb | 9292 | outrel.r_addend = 0; |
e515b051 | 9293 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPMOD64); |
d881513a AM |
9294 | if (tls_type == (TLS_TLS | TLS_GD)) |
9295 | { | |
e717da7e AM |
9296 | loc = relgot->contents; |
9297 | loc += (relgot->reloc_count++ | |
d881513a AM |
9298 | * sizeof (Elf64_External_Rela)); |
9299 | bfd_elf64_swap_reloca_out (output_bfd, | |
9300 | &outrel, loc); | |
e515b051 | 9301 | outrel.r_offset += 8; |
81407a69 | 9302 | outrel.r_addend = rel->r_addend; |
d881513a AM |
9303 | outrel.r_info |
9304 | = ELF64_R_INFO (indx, R_PPC64_DTPREL64); | |
d881513a | 9305 | } |
411e1bfb | 9306 | } |
951fd09b | 9307 | else if (tls_type == (TLS_TLS | TLS_DTPREL)) |
411e1bfb | 9308 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPREL64); |
951fd09b | 9309 | else if (tls_type == (TLS_TLS | TLS_TPREL)) |
411e1bfb AM |
9310 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_TPREL64); |
9311 | else if (indx == 0) | |
81407a69 AM |
9312 | { |
9313 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_RELATIVE); | |
9314 | ||
9315 | /* Write the .got section contents for the sake | |
9316 | of prelink. */ | |
e717da7e | 9317 | loc = got->contents + off; |
23fbd6fa JJ |
9318 | bfd_put_64 (output_bfd, outrel.r_addend + relocation, |
9319 | loc); | |
81407a69 | 9320 | } |
411e1bfb AM |
9321 | else |
9322 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_GLOB_DAT); | |
81407a69 AM |
9323 | |
9324 | if (indx == 0 && tls_type != (TLS_TLS | TLS_LD)) | |
e515b051 AM |
9325 | { |
9326 | outrel.r_addend += relocation; | |
9327 | if (tls_type & (TLS_GD | TLS_DTPREL | TLS_TPREL)) | |
e1918d23 | 9328 | outrel.r_addend -= htab->elf.tls_sec->vma; |
e515b051 | 9329 | } |
e717da7e AM |
9330 | loc = relgot->contents; |
9331 | loc += (relgot->reloc_count++ | |
411e1bfb AM |
9332 | * sizeof (Elf64_External_Rela)); |
9333 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); | |
9334 | } | |
9335 | ||
ad8e1ba5 | 9336 | /* Init the .got section contents here if we're not |
81407a69 | 9337 | emitting a reloc. */ |
d881513a | 9338 | else |
411e1bfb | 9339 | { |
d881513a | 9340 | relocation += rel->r_addend; |
7b609f53 AM |
9341 | if (tls_type == (TLS_TLS | TLS_LD)) |
9342 | relocation = 1; | |
9343 | else if (tls_type != 0) | |
411e1bfb | 9344 | { |
e1918d23 | 9345 | relocation -= htab->elf.tls_sec->vma + DTP_OFFSET; |
7b609f53 | 9346 | if (tls_type == (TLS_TLS | TLS_TPREL)) |
411e1bfb | 9347 | relocation += DTP_OFFSET - TP_OFFSET; |
5bd4f169 | 9348 | |
7b609f53 AM |
9349 | if (tls_type == (TLS_TLS | TLS_GD)) |
9350 | { | |
9351 | bfd_put_64 (output_bfd, relocation, | |
e717da7e | 9352 | got->contents + off + 8); |
7b609f53 AM |
9353 | relocation = 1; |
9354 | } | |
411e1bfb | 9355 | } |
7b609f53 | 9356 | |
411e1bfb | 9357 | bfd_put_64 (output_bfd, relocation, |
e717da7e | 9358 | got->contents + off); |
5bd4f169 AM |
9359 | } |
9360 | } | |
9361 | ||
65f38f15 AM |
9362 | if (off >= (bfd_vma) -2) |
9363 | abort (); | |
9364 | ||
e717da7e | 9365 | relocation = got->output_offset + off; |
65f38f15 | 9366 | |
5bd4f169 | 9367 | /* TOC base (r2) is TOC start plus 0x8000. */ |
e717da7e | 9368 | addend = -TOC_BASE_OFF; |
5bd4f169 | 9369 | } |
65f38f15 AM |
9370 | break; |
9371 | ||
9372 | case R_PPC64_PLT16_HA: | |
9373 | case R_PPC64_PLT16_HI: | |
9374 | case R_PPC64_PLT16_LO: | |
9375 | case R_PPC64_PLT32: | |
9376 | case R_PPC64_PLT64: | |
9377 | /* Relocation is to the entry for this symbol in the | |
9378 | procedure linkage table. */ | |
9379 | ||
9380 | /* Resolve a PLT reloc against a local symbol directly, | |
9381 | without using the procedure linkage table. */ | |
9382 | if (h == NULL) | |
9383 | break; | |
9384 | ||
411e1bfb AM |
9385 | /* It's possible that we didn't make a PLT entry for this |
9386 | symbol. This happens when statically linking PIC code, | |
9387 | or when using -Bsymbolic. Go find a match if there is a | |
9388 | PLT entry. */ | |
4ce794b7 | 9389 | if (htab->plt != NULL) |
65f38f15 | 9390 | { |
411e1bfb | 9391 | struct plt_entry *ent; |
039b3fef | 9392 | for (ent = h->elf.plt.plist; ent != NULL; ent = ent->next) |
411e1bfb AM |
9393 | if (ent->addend == rel->r_addend |
9394 | && ent->plt.offset != (bfd_vma) -1) | |
9395 | { | |
4ce794b7 AM |
9396 | relocation = (htab->plt->output_section->vma |
9397 | + htab->plt->output_offset | |
411e1bfb AM |
9398 | + ent->plt.offset); |
9399 | unresolved_reloc = FALSE; | |
9400 | } | |
65f38f15 | 9401 | } |
65f38f15 | 9402 | break; |
5bd4f169 | 9403 | |
0b13192e AM |
9404 | case R_PPC64_TOC: |
9405 | /* Relocation value is TOC base. */ | |
9406 | relocation = TOCstart; | |
9407 | if (r_symndx == 0) | |
9408 | relocation += htab->stub_group[input_section->id].toc_off; | |
8517fae7 AM |
9409 | else if (unresolved_reloc) |
9410 | ; | |
9411 | else if (sec != NULL && sec->id <= htab->top_id) | |
0b13192e AM |
9412 | relocation += htab->stub_group[sec->id].toc_off; |
9413 | else | |
9414 | unresolved_reloc = TRUE; | |
9415 | goto dodyn2; | |
9416 | ||
5bd4f169 AM |
9417 | /* TOC16 relocs. We want the offset relative to the TOC base, |
9418 | which is the address of the start of the TOC plus 0x8000. | |
9419 | The TOC consists of sections .got, .toc, .tocbss, and .plt, | |
9420 | in this order. */ | |
65f38f15 AM |
9421 | case R_PPC64_TOC16: |
9422 | case R_PPC64_TOC16_LO: | |
9423 | case R_PPC64_TOC16_HI: | |
9424 | case R_PPC64_TOC16_DS: | |
9425 | case R_PPC64_TOC16_LO_DS: | |
9426 | case R_PPC64_TOC16_HA: | |
ad8e1ba5 | 9427 | addend -= TOCstart + htab->stub_group[input_section->id].toc_off; |
5bd4f169 AM |
9428 | break; |
9429 | ||
9430 | /* Relocate against the beginning of the section. */ | |
65f38f15 AM |
9431 | case R_PPC64_SECTOFF: |
9432 | case R_PPC64_SECTOFF_LO: | |
9433 | case R_PPC64_SECTOFF_HI: | |
9434 | case R_PPC64_SECTOFF_DS: | |
9435 | case R_PPC64_SECTOFF_LO_DS: | |
9436 | case R_PPC64_SECTOFF_HA: | |
4ce794b7 | 9437 | if (sec != NULL) |
65f38f15 | 9438 | addend -= sec->output_section->vma; |
5bd4f169 AM |
9439 | break; |
9440 | ||
721956f4 AM |
9441 | case R_PPC64_REL14: |
9442 | case R_PPC64_REL14_BRNTAKEN: | |
9443 | case R_PPC64_REL14_BRTAKEN: | |
5d1634d7 AM |
9444 | case R_PPC64_REL24: |
9445 | break; | |
9446 | ||
411e1bfb AM |
9447 | case R_PPC64_TPREL16: |
9448 | case R_PPC64_TPREL16_LO: | |
9449 | case R_PPC64_TPREL16_HI: | |
9450 | case R_PPC64_TPREL16_HA: | |
9451 | case R_PPC64_TPREL16_DS: | |
9452 | case R_PPC64_TPREL16_LO_DS: | |
9453 | case R_PPC64_TPREL16_HIGHER: | |
9454 | case R_PPC64_TPREL16_HIGHERA: | |
9455 | case R_PPC64_TPREL16_HIGHEST: | |
9456 | case R_PPC64_TPREL16_HIGHESTA: | |
e1918d23 | 9457 | addend -= htab->elf.tls_sec->vma + TP_OFFSET; |
411e1bfb AM |
9458 | if (info->shared) |
9459 | /* The TPREL16 relocs shouldn't really be used in shared | |
9460 | libs as they will result in DT_TEXTREL being set, but | |
9461 | support them anyway. */ | |
9462 | goto dodyn; | |
9463 | break; | |
9464 | ||
9465 | case R_PPC64_DTPREL16: | |
9466 | case R_PPC64_DTPREL16_LO: | |
9467 | case R_PPC64_DTPREL16_HI: | |
9468 | case R_PPC64_DTPREL16_HA: | |
9469 | case R_PPC64_DTPREL16_DS: | |
9470 | case R_PPC64_DTPREL16_LO_DS: | |
9471 | case R_PPC64_DTPREL16_HIGHER: | |
9472 | case R_PPC64_DTPREL16_HIGHERA: | |
9473 | case R_PPC64_DTPREL16_HIGHEST: | |
9474 | case R_PPC64_DTPREL16_HIGHESTA: | |
e1918d23 | 9475 | addend -= htab->elf.tls_sec->vma + DTP_OFFSET; |
411e1bfb AM |
9476 | break; |
9477 | ||
e515b051 AM |
9478 | case R_PPC64_DTPMOD64: |
9479 | relocation = 1; | |
9480 | addend = 0; | |
9481 | goto dodyn; | |
9482 | ||
411e1bfb | 9483 | case R_PPC64_TPREL64: |
e1918d23 | 9484 | addend -= htab->elf.tls_sec->vma + TP_OFFSET; |
411e1bfb AM |
9485 | goto dodyn; |
9486 | ||
9487 | case R_PPC64_DTPREL64: | |
e1918d23 | 9488 | addend -= htab->elf.tls_sec->vma + DTP_OFFSET; |
411e1bfb AM |
9489 | /* Fall thru */ |
9490 | ||
65f38f15 AM |
9491 | /* Relocations that may need to be propagated if this is a |
9492 | dynamic object. */ | |
04c9666a | 9493 | case R_PPC64_REL30: |
65f38f15 AM |
9494 | case R_PPC64_REL32: |
9495 | case R_PPC64_REL64: | |
9496 | case R_PPC64_ADDR14: | |
9497 | case R_PPC64_ADDR14_BRNTAKEN: | |
9498 | case R_PPC64_ADDR14_BRTAKEN: | |
9499 | case R_PPC64_ADDR16: | |
9500 | case R_PPC64_ADDR16_DS: | |
9501 | case R_PPC64_ADDR16_HA: | |
9502 | case R_PPC64_ADDR16_HI: | |
9503 | case R_PPC64_ADDR16_HIGHER: | |
9504 | case R_PPC64_ADDR16_HIGHERA: | |
9505 | case R_PPC64_ADDR16_HIGHEST: | |
9506 | case R_PPC64_ADDR16_HIGHESTA: | |
9507 | case R_PPC64_ADDR16_LO: | |
9508 | case R_PPC64_ADDR16_LO_DS: | |
9509 | case R_PPC64_ADDR24: | |
65f38f15 AM |
9510 | case R_PPC64_ADDR32: |
9511 | case R_PPC64_ADDR64: | |
9512 | case R_PPC64_UADDR16: | |
9513 | case R_PPC64_UADDR32: | |
9514 | case R_PPC64_UADDR64: | |
ec338859 AM |
9515 | /* r_symndx will be zero only for relocs against symbols |
9516 | from removed linkonce sections, or sections discarded by | |
9517 | a linker script. */ | |
411e1bfb | 9518 | dodyn: |
5d1634d7 AM |
9519 | if (r_symndx == 0) |
9520 | break; | |
9521 | /* Fall thru. */ | |
9522 | ||
0b13192e | 9523 | dodyn2: |
5d1634d7 | 9524 | if ((input_section->flags & SEC_ALLOC) == 0) |
ec338859 AM |
9525 | break; |
9526 | ||
41bd81ab AM |
9527 | if (NO_OPD_RELOCS && is_opd) |
9528 | break; | |
9529 | ||
65f38f15 | 9530 | if ((info->shared |
4e795f50 | 9531 | && (h == NULL |
039b3fef AM |
9532 | || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT |
9533 | || h->elf.root.type != bfd_link_hash_undefweak) | |
411e1bfb | 9534 | && (MUST_BE_DYN_RELOC (r_type) |
039b3fef | 9535 | || !SYMBOL_CALLS_LOCAL (info, &h->elf))) |
f4656909 AM |
9536 | || (ELIMINATE_COPY_RELOCS |
9537 | && !info->shared | |
65f38f15 | 9538 | && h != NULL |
039b3fef AM |
9539 | && h->elf.dynindx != -1 |
9540 | && !(h->elf.elf_link_hash_flags & ELF_LINK_NON_GOT_REF) | |
9541 | && (h->elf.elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) | |
9542 | && !(h->elf.elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR))) | |
65f38f15 AM |
9543 | { |
9544 | Elf_Internal_Rela outrel; | |
b34976b6 | 9545 | bfd_boolean skip, relocate; |
65f38f15 | 9546 | asection *sreloc; |
947216bf | 9547 | bfd_byte *loc; |
1cf1f670 | 9548 | bfd_vma out_off; |
65f38f15 AM |
9549 | |
9550 | /* When generating a dynamic object, these relocations | |
9551 | are copied into the output file to be resolved at run | |
9552 | time. */ | |
9553 | ||
b34976b6 AM |
9554 | skip = FALSE; |
9555 | relocate = FALSE; | |
65f38f15 | 9556 | |
1cf1f670 AM |
9557 | out_off = _bfd_elf_section_offset (output_bfd, info, |
9558 | input_section, rel->r_offset); | |
9559 | if (out_off == (bfd_vma) -1) | |
b34976b6 | 9560 | skip = TRUE; |
1cf1f670 | 9561 | else if (out_off == (bfd_vma) -2) |
b34976b6 | 9562 | skip = TRUE, relocate = TRUE; |
1cf1f670 AM |
9563 | out_off += (input_section->output_section->vma |
9564 | + input_section->output_offset); | |
9565 | outrel.r_offset = out_off; | |
411e1bfb | 9566 | outrel.r_addend = rel->r_addend; |
65f38f15 | 9567 | |
1cf1f670 AM |
9568 | /* Optimize unaligned reloc use. */ |
9569 | if ((r_type == R_PPC64_ADDR64 && (out_off & 7) != 0) | |
9570 | || (r_type == R_PPC64_UADDR64 && (out_off & 7) == 0)) | |
9571 | r_type ^= R_PPC64_ADDR64 ^ R_PPC64_UADDR64; | |
9572 | else if ((r_type == R_PPC64_ADDR32 && (out_off & 3) != 0) | |
9573 | || (r_type == R_PPC64_UADDR32 && (out_off & 3) == 0)) | |
9574 | r_type ^= R_PPC64_ADDR32 ^ R_PPC64_UADDR32; | |
9575 | else if ((r_type == R_PPC64_ADDR16 && (out_off & 1) != 0) | |
9576 | || (r_type == R_PPC64_UADDR16 && (out_off & 1) == 0)) | |
9577 | r_type ^= R_PPC64_ADDR16 ^ R_PPC64_UADDR16; | |
9578 | ||
65f38f15 | 9579 | if (skip) |
0bb2d96a | 9580 | memset (&outrel, 0, sizeof outrel); |
039b3fef | 9581 | else if (!SYMBOL_REFERENCES_LOCAL (info, &h->elf) |
0b13192e AM |
9582 | && !is_opd |
9583 | && r_type != R_PPC64_TOC) | |
039b3fef | 9584 | outrel.r_info = ELF64_R_INFO (h->elf.dynindx, r_type); |
65f38f15 AM |
9585 | else |
9586 | { | |
41bd81ab AM |
9587 | /* This symbol is local, or marked to become local, |
9588 | or this is an opd section reloc which must point | |
9589 | at a local function. */ | |
65f38f15 | 9590 | outrel.r_addend += relocation; |
e86ce104 | 9591 | if (r_type == R_PPC64_ADDR64 || r_type == R_PPC64_TOC) |
65f38f15 | 9592 | { |
3fad3c7c | 9593 | if (is_opd && h != NULL) |
afbe61cf AM |
9594 | { |
9595 | /* Lie about opd entries. This case occurs | |
9596 | when building shared libraries and we | |
9597 | reference a function in another shared | |
3fad3c7c AM |
9598 | lib. The same thing happens for a weak |
9599 | definition in an application that's | |
9600 | overridden by a strong definition in a | |
9601 | shared lib. (I believe this is a generic | |
9602 | bug in binutils handling of weak syms.) | |
9603 | In these cases we won't use the opd | |
1e2f5b6e | 9604 | entry in this lib. */ |
b34976b6 | 9605 | unresolved_reloc = FALSE; |
afbe61cf | 9606 | } |
65f38f15 | 9607 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); |
81407a69 AM |
9608 | |
9609 | /* We need to relocate .opd contents for ld.so. | |
9610 | Prelink also wants simple and consistent rules | |
9611 | for relocs. This make all RELATIVE relocs have | |
9612 | *r_offset equal to r_addend. */ | |
9613 | relocate = TRUE; | |
65f38f15 AM |
9614 | } |
9615 | else | |
9616 | { | |
9617 | long indx = 0; | |
9618 | ||
41bd81ab | 9619 | if (bfd_is_abs_section (sec)) |
65f38f15 AM |
9620 | ; |
9621 | else if (sec == NULL || sec->owner == NULL) | |
9622 | { | |
9623 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 9624 | return FALSE; |
65f38f15 AM |
9625 | } |
9626 | else | |
9627 | { | |
9628 | asection *osec; | |
9629 | ||
9630 | osec = sec->output_section; | |
9631 | indx = elf_section_data (osec)->dynindx; | |
9632 | ||
9633 | /* We are turning this relocation into one | |
9634 | against a section symbol, so subtract out | |
9635 | the output section's address but not the | |
9636 | offset of the input section in the output | |
9637 | section. */ | |
9638 | outrel.r_addend -= osec->vma; | |
9639 | } | |
9640 | ||
9641 | outrel.r_info = ELF64_R_INFO (indx, r_type); | |
9642 | } | |
9643 | } | |
9644 | ||
9645 | sreloc = elf_section_data (input_section)->sreloc; | |
9646 | if (sreloc == NULL) | |
9647 | abort (); | |
9648 | ||
947216bf AM |
9649 | loc = sreloc->contents; |
9650 | loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela); | |
65f38f15 AM |
9651 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); |
9652 | ||
9653 | /* If this reloc is against an external symbol, it will | |
9654 | be computed at runtime, so there's no need to do | |
81407a69 AM |
9655 | anything now. However, for the sake of prelink ensure |
9656 | that the section contents are a known value. */ | |
65f38f15 | 9657 | if (! relocate) |
81407a69 AM |
9658 | { |
9659 | unresolved_reloc = FALSE; | |
9660 | /* The value chosen here is quite arbitrary as ld.so | |
9661 | ignores section contents except for the special | |
9662 | case of .opd where the contents might be accessed | |
9663 | before relocation. Choose zero, as that won't | |
9664 | cause reloc overflow. */ | |
9665 | relocation = 0; | |
9666 | addend = 0; | |
9667 | /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs | |
9668 | to improve backward compatibility with older | |
9669 | versions of ld. */ | |
9670 | if (r_type == R_PPC64_ADDR64) | |
9671 | addend = outrel.r_addend; | |
9672 | /* Adjust pc_relative relocs to have zero in *r_offset. */ | |
4ce794b7 | 9673 | else if (ppc64_elf_howto_table[r_type]->pc_relative) |
000732f7 AM |
9674 | addend = (input_section->output_section->vma |
9675 | + input_section->output_offset | |
9676 | + rel->r_offset); | |
81407a69 | 9677 | } |
65f38f15 | 9678 | } |
5bd4f169 AM |
9679 | break; |
9680 | ||
65f38f15 AM |
9681 | case R_PPC64_COPY: |
9682 | case R_PPC64_GLOB_DAT: | |
9683 | case R_PPC64_JMP_SLOT: | |
9684 | case R_PPC64_RELATIVE: | |
9685 | /* We shouldn't ever see these dynamic relocs in relocatable | |
9686 | files. */ | |
ae9a127f | 9687 | /* Fall through. */ |
65f38f15 AM |
9688 | |
9689 | case R_PPC64_PLTGOT16: | |
9690 | case R_PPC64_PLTGOT16_DS: | |
9691 | case R_PPC64_PLTGOT16_HA: | |
9692 | case R_PPC64_PLTGOT16_HI: | |
9693 | case R_PPC64_PLTGOT16_LO: | |
9694 | case R_PPC64_PLTGOT16_LO_DS: | |
9695 | case R_PPC64_PLTREL32: | |
9696 | case R_PPC64_PLTREL64: | |
9697 | /* These ones haven't been implemented yet. */ | |
9698 | ||
9699 | (*_bfd_error_handler) | |
d003868e AM |
9700 | (_("%B: relocation %s is not supported for symbol %s."), |
9701 | input_bfd, | |
4ce794b7 | 9702 | ppc64_elf_howto_table[r_type]->name, sym_name); |
5bd4f169 AM |
9703 | |
9704 | bfd_set_error (bfd_error_invalid_operation); | |
b34976b6 | 9705 | ret = FALSE; |
5bd4f169 | 9706 | continue; |
65f38f15 | 9707 | } |
5bd4f169 | 9708 | |
65f38f15 AM |
9709 | /* Do any further special processing. */ |
9710 | switch (r_type) | |
9711 | { | |
9712 | default: | |
9713 | break; | |
9714 | ||
9715 | case R_PPC64_ADDR16_HA: | |
9716 | case R_PPC64_ADDR16_HIGHERA: | |
9717 | case R_PPC64_ADDR16_HIGHESTA: | |
86bbe32f AM |
9718 | case R_PPC64_GOT16_HA: |
9719 | case R_PPC64_PLTGOT16_HA: | |
65f38f15 AM |
9720 | case R_PPC64_PLT16_HA: |
9721 | case R_PPC64_TOC16_HA: | |
9722 | case R_PPC64_SECTOFF_HA: | |
411e1bfb AM |
9723 | case R_PPC64_TPREL16_HA: |
9724 | case R_PPC64_DTPREL16_HA: | |
9725 | case R_PPC64_GOT_TLSGD16_HA: | |
9726 | case R_PPC64_GOT_TLSLD16_HA: | |
9727 | case R_PPC64_GOT_TPREL16_HA: | |
9728 | case R_PPC64_GOT_DTPREL16_HA: | |
9729 | case R_PPC64_TPREL16_HIGHER: | |
9730 | case R_PPC64_TPREL16_HIGHERA: | |
9731 | case R_PPC64_TPREL16_HIGHEST: | |
9732 | case R_PPC64_TPREL16_HIGHESTA: | |
9733 | case R_PPC64_DTPREL16_HIGHER: | |
9734 | case R_PPC64_DTPREL16_HIGHERA: | |
9735 | case R_PPC64_DTPREL16_HIGHEST: | |
9736 | case R_PPC64_DTPREL16_HIGHESTA: | |
65f38f15 AM |
9737 | /* It's just possible that this symbol is a weak symbol |
9738 | that's not actually defined anywhere. In that case, | |
9739 | 'sec' would be NULL, and we should leave the symbol | |
9740 | alone (it will be set to zero elsewhere in the link). */ | |
9741 | if (sec != NULL) | |
e515b051 AM |
9742 | /* Add 0x10000 if sign bit in 0:15 is set. |
9743 | Bits 0:15 are not used. */ | |
9744 | addend += 0x8000; | |
65f38f15 AM |
9745 | break; |
9746 | ||
9747 | case R_PPC64_ADDR16_DS: | |
9748 | case R_PPC64_ADDR16_LO_DS: | |
9749 | case R_PPC64_GOT16_DS: | |
9750 | case R_PPC64_GOT16_LO_DS: | |
9751 | case R_PPC64_PLT16_LO_DS: | |
9752 | case R_PPC64_SECTOFF_DS: | |
9753 | case R_PPC64_SECTOFF_LO_DS: | |
9754 | case R_PPC64_TOC16_DS: | |
9755 | case R_PPC64_TOC16_LO_DS: | |
9756 | case R_PPC64_PLTGOT16_DS: | |
9757 | case R_PPC64_PLTGOT16_LO_DS: | |
411e1bfb AM |
9758 | case R_PPC64_GOT_TPREL16_DS: |
9759 | case R_PPC64_GOT_TPREL16_LO_DS: | |
9760 | case R_PPC64_GOT_DTPREL16_DS: | |
9761 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
9762 | case R_PPC64_TPREL16_DS: | |
9763 | case R_PPC64_TPREL16_LO_DS: | |
9764 | case R_PPC64_DTPREL16_DS: | |
9765 | case R_PPC64_DTPREL16_LO_DS: | |
adadcc0c AM |
9766 | insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3)); |
9767 | mask = 3; | |
9768 | /* If this reloc is against an lq insn, then the value must be | |
9769 | a multiple of 16. This is somewhat of a hack, but the | |
9770 | "correct" way to do this by defining _DQ forms of all the | |
9771 | _DS relocs bloats all reloc switches in this file. It | |
9772 | doesn't seem to make much sense to use any of these relocs | |
9773 | in data, so testing the insn should be safe. */ | |
494dac0c | 9774 | if ((insn & (0x3f << 26)) == (56u << 26)) |
adadcc0c AM |
9775 | mask = 15; |
9776 | if (((relocation + addend) & mask) != 0) | |
65f38f15 AM |
9777 | { |
9778 | (*_bfd_error_handler) | |
d003868e AM |
9779 | (_("%B: error: relocation %s not a multiple of %d"), |
9780 | input_bfd, | |
4ce794b7 | 9781 | ppc64_elf_howto_table[r_type]->name, |
adadcc0c | 9782 | mask + 1); |
65f38f15 | 9783 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 9784 | ret = FALSE; |
65f38f15 AM |
9785 | continue; |
9786 | } | |
9787 | break; | |
5bd4f169 AM |
9788 | } |
9789 | ||
239e1f3a AM |
9790 | /* Dynamic relocs are not propagated for SEC_DEBUGGING sections |
9791 | because such sections are not SEC_ALLOC and thus ld.so will | |
9792 | not process them. */ | |
65f38f15 | 9793 | if (unresolved_reloc |
239e1f3a | 9794 | && !((input_section->flags & SEC_DEBUGGING) != 0 |
039b3fef | 9795 | && (h->elf.elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC))) |
9c07fe7c AM |
9796 | { |
9797 | (*_bfd_error_handler) | |
d003868e AM |
9798 | (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"), |
9799 | input_bfd, | |
9800 | input_section, | |
9c07fe7c | 9801 | (long) rel->r_offset, |
7b609f53 | 9802 | ppc64_elf_howto_table[(int) r_type]->name, |
039b3fef | 9803 | h->elf.root.root.string); |
b34976b6 | 9804 | ret = FALSE; |
9c07fe7c | 9805 | } |
5bd4f169 | 9806 | |
65f38f15 | 9807 | r = _bfd_final_link_relocate (ppc64_elf_howto_table[(int) r_type], |
5bd4f169 AM |
9808 | input_bfd, |
9809 | input_section, | |
9810 | contents, | |
411e1bfb | 9811 | rel->r_offset, |
5bd4f169 AM |
9812 | relocation, |
9813 | addend); | |
9814 | ||
ef60b7ff | 9815 | if (r != bfd_reloc_ok) |
5bd4f169 | 9816 | { |
cd27b276 AM |
9817 | if (sym_name == NULL) |
9818 | sym_name = "(null)"; | |
9819 | if (r == bfd_reloc_overflow) | |
5bd4f169 | 9820 | { |
cd27b276 AM |
9821 | if (warned) |
9822 | continue; | |
9823 | if (h != NULL | |
039b3fef | 9824 | && h->elf.root.type == bfd_link_hash_undefweak |
4ce794b7 | 9825 | && ppc64_elf_howto_table[r_type]->pc_relative) |
5bd4f169 AM |
9826 | { |
9827 | /* Assume this is a call protected by other code that | |
9828 | detects the symbol is undefined. If this is the case, | |
9829 | we can safely ignore the overflow. If not, the | |
9830 | program is hosed anyway, and a little warning isn't | |
9831 | going to help. */ | |
9832 | ||
9833 | continue; | |
9834 | } | |
9835 | ||
ef60b7ff | 9836 | if (!((*info->callbacks->reloc_overflow) |
4ce794b7 | 9837 | (info, sym_name, ppc64_elf_howto_table[r_type]->name, |
411e1bfb | 9838 | rel->r_addend, input_bfd, input_section, rel->r_offset))) |
b34976b6 | 9839 | return FALSE; |
ef60b7ff AM |
9840 | } |
9841 | else | |
9842 | { | |
9843 | (*_bfd_error_handler) | |
d003868e AM |
9844 | (_("%B(%A+0x%lx): %s reloc against `%s': error %d"), |
9845 | input_bfd, | |
9846 | input_section, | |
7b609f53 | 9847 | (long) rel->r_offset, |
4ce794b7 | 9848 | ppc64_elf_howto_table[r_type]->name, |
7b609f53 AM |
9849 | sym_name, |
9850 | (int) r); | |
b34976b6 | 9851 | ret = FALSE; |
ef60b7ff | 9852 | } |
5bd4f169 | 9853 | } |
5bd4f169 AM |
9854 | } |
9855 | ||
5bd4f169 AM |
9856 | return ret; |
9857 | } | |
9858 | ||
754021d0 AM |
9859 | /* Adjust the value of any local symbols in opd sections. */ |
9860 | ||
9861 | static bfd_boolean | |
9862 | ppc64_elf_output_symbol_hook (struct bfd_link_info *info, | |
9863 | const char *name ATTRIBUTE_UNUSED, | |
9864 | Elf_Internal_Sym *elfsym, | |
9865 | asection *input_sec, | |
9866 | struct elf_link_hash_entry *h) | |
9867 | { | |
4025353c | 9868 | long *opd_adjust, adjust; |
754021d0 AM |
9869 | bfd_vma value; |
9870 | ||
4025353c AM |
9871 | if (h != NULL) |
9872 | return TRUE; | |
9873 | ||
9874 | opd_adjust = get_opd_info (input_sec); | |
9875 | if (opd_adjust == NULL) | |
754021d0 AM |
9876 | return TRUE; |
9877 | ||
9878 | value = elfsym->st_value - input_sec->output_offset; | |
9879 | if (!info->relocatable) | |
9880 | value -= input_sec->output_section->vma; | |
9881 | ||
3f764659 | 9882 | adjust = opd_adjust[value / 8]; |
4025353c AM |
9883 | if (adjust == -1) |
9884 | elfsym->st_value = 0; | |
9885 | else | |
9886 | elfsym->st_value += adjust; | |
754021d0 AM |
9887 | return TRUE; |
9888 | } | |
9889 | ||
5bd4f169 AM |
9890 | /* Finish up dynamic symbol handling. We set the contents of various |
9891 | dynamic sections here. */ | |
9892 | ||
b34976b6 | 9893 | static bfd_boolean |
4ce794b7 AM |
9894 | ppc64_elf_finish_dynamic_symbol (bfd *output_bfd, |
9895 | struct bfd_link_info *info, | |
9896 | struct elf_link_hash_entry *h, | |
9897 | Elf_Internal_Sym *sym) | |
5bd4f169 | 9898 | { |
65f38f15 | 9899 | struct ppc_link_hash_table *htab; |
5bd4f169 | 9900 | bfd *dynobj; |
8387904d AM |
9901 | struct plt_entry *ent; |
9902 | Elf_Internal_Rela rela; | |
9903 | bfd_byte *loc; | |
5bd4f169 | 9904 | |
65f38f15 AM |
9905 | htab = ppc_hash_table (info); |
9906 | dynobj = htab->elf.dynobj; | |
5bd4f169 | 9907 | |
8387904d AM |
9908 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) |
9909 | if (ent->plt.offset != (bfd_vma) -1) | |
9910 | { | |
9911 | /* This symbol has an entry in the procedure linkage | |
9912 | table. Set it up. */ | |
9913 | ||
9914 | if (htab->plt == NULL | |
9915 | || htab->relplt == NULL | |
9916 | || htab->glink == NULL) | |
9917 | abort (); | |
9918 | ||
9919 | /* Create a JMP_SLOT reloc to inform the dynamic linker to | |
9920 | fill in the PLT entry. */ | |
9921 | rela.r_offset = (htab->plt->output_section->vma | |
9922 | + htab->plt->output_offset | |
9923 | + ent->plt.offset); | |
9924 | rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_JMP_SLOT); | |
9925 | rela.r_addend = ent->addend; | |
9926 | ||
9927 | loc = htab->relplt->contents; | |
9928 | loc += ((ent->plt.offset - PLT_INITIAL_ENTRY_SIZE) / PLT_ENTRY_SIZE | |
9929 | * sizeof (Elf64_External_Rela)); | |
9930 | bfd_elf64_swap_reloca_out (output_bfd, &rela, loc); | |
9931 | } | |
5bd4f169 AM |
9932 | |
9933 | if ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_COPY) != 0) | |
9934 | { | |
5bd4f169 | 9935 | Elf_Internal_Rela rela; |
947216bf | 9936 | bfd_byte *loc; |
5bd4f169 | 9937 | |
65f38f15 | 9938 | /* This symbol needs a copy reloc. Set it up. */ |
5bd4f169 | 9939 | |
65f38f15 AM |
9940 | if (h->dynindx == -1 |
9941 | || (h->root.type != bfd_link_hash_defined | |
9942 | && h->root.type != bfd_link_hash_defweak) | |
4ce794b7 | 9943 | || htab->relbss == NULL) |
65f38f15 | 9944 | abort (); |
5bd4f169 AM |
9945 | |
9946 | rela.r_offset = (h->root.u.def.value | |
9947 | + h->root.u.def.section->output_section->vma | |
9948 | + h->root.u.def.section->output_offset); | |
9949 | rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_COPY); | |
9950 | rela.r_addend = 0; | |
4ce794b7 AM |
9951 | loc = htab->relbss->contents; |
9952 | loc += htab->relbss->reloc_count++ * sizeof (Elf64_External_Rela); | |
65f38f15 | 9953 | bfd_elf64_swap_reloca_out (output_bfd, &rela, loc); |
5bd4f169 AM |
9954 | } |
9955 | ||
5bd4f169 AM |
9956 | /* Mark some specially defined symbols as absolute. */ |
9957 | if (strcmp (h->root.root.string, "_DYNAMIC") == 0) | |
9958 | sym->st_shndx = SHN_ABS; | |
9959 | ||
b34976b6 | 9960 | return TRUE; |
5bd4f169 AM |
9961 | } |
9962 | ||
65f38f15 AM |
9963 | /* Used to decide how to sort relocs in an optimal manner for the |
9964 | dynamic linker, before writing them out. */ | |
9965 | ||
9966 | static enum elf_reloc_type_class | |
4ce794b7 | 9967 | ppc64_elf_reloc_type_class (const Elf_Internal_Rela *rela) |
65f38f15 | 9968 | { |
04c9666a | 9969 | enum elf_ppc64_reloc_type r_type; |
a33d1f77 | 9970 | |
4ce794b7 | 9971 | r_type = ELF64_R_TYPE (rela->r_info); |
a33d1f77 | 9972 | switch (r_type) |
65f38f15 AM |
9973 | { |
9974 | case R_PPC64_RELATIVE: | |
9975 | return reloc_class_relative; | |
9976 | case R_PPC64_JMP_SLOT: | |
9977 | return reloc_class_plt; | |
9978 | case R_PPC64_COPY: | |
9979 | return reloc_class_copy; | |
9980 | default: | |
9981 | return reloc_class_normal; | |
9982 | } | |
9983 | } | |
9984 | ||
5bd4f169 AM |
9985 | /* Finish up the dynamic sections. */ |
9986 | ||
b34976b6 | 9987 | static bfd_boolean |
4ce794b7 AM |
9988 | ppc64_elf_finish_dynamic_sections (bfd *output_bfd, |
9989 | struct bfd_link_info *info) | |
5bd4f169 | 9990 | { |
65f38f15 AM |
9991 | struct ppc_link_hash_table *htab; |
9992 | bfd *dynobj; | |
5bd4f169 | 9993 | asection *sdyn; |
5bd4f169 | 9994 | |
65f38f15 AM |
9995 | htab = ppc_hash_table (info); |
9996 | dynobj = htab->elf.dynobj; | |
5bd4f169 AM |
9997 | sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); |
9998 | ||
65f38f15 | 9999 | if (htab->elf.dynamic_sections_created) |
5bd4f169 | 10000 | { |
5bd4f169 AM |
10001 | Elf64_External_Dyn *dyncon, *dynconend; |
10002 | ||
4ce794b7 | 10003 | if (sdyn == NULL || htab->got == NULL) |
65f38f15 | 10004 | abort (); |
5bd4f169 AM |
10005 | |
10006 | dyncon = (Elf64_External_Dyn *) sdyn->contents; | |
eea6121a | 10007 | dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size); |
5bd4f169 AM |
10008 | for (; dyncon < dynconend; dyncon++) |
10009 | { | |
10010 | Elf_Internal_Dyn dyn; | |
19397422 | 10011 | asection *s; |
5bd4f169 AM |
10012 | |
10013 | bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn); | |
10014 | ||
10015 | switch (dyn.d_tag) | |
10016 | { | |
65f38f15 AM |
10017 | default: |
10018 | continue; | |
5bd4f169 | 10019 | |
5d1634d7 | 10020 | case DT_PPC64_GLINK: |
4ce794b7 | 10021 | s = htab->glink; |
6348e046 | 10022 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
ad8e1ba5 AM |
10023 | /* We stupidly defined DT_PPC64_GLINK to be the start |
10024 | of glink rather than the first entry point, which is | |
10025 | what ld.so needs, and now have a bigger stub to | |
10026 | support automatic multiple TOCs. */ | |
10027 | dyn.d_un.d_ptr += GLINK_CALL_STUB_SIZE - 32; | |
5d1634d7 AM |
10028 | break; |
10029 | ||
19397422 AM |
10030 | case DT_PPC64_OPD: |
10031 | s = bfd_get_section_by_name (output_bfd, ".opd"); | |
6348e046 AM |
10032 | if (s == NULL) |
10033 | continue; | |
10034 | dyn.d_un.d_ptr = s->vma; | |
19397422 AM |
10035 | break; |
10036 | ||
10037 | case DT_PPC64_OPDSZ: | |
10038 | s = bfd_get_section_by_name (output_bfd, ".opd"); | |
6348e046 AM |
10039 | if (s == NULL) |
10040 | continue; | |
eea6121a | 10041 | dyn.d_un.d_val = s->size; |
19397422 AM |
10042 | break; |
10043 | ||
65f38f15 | 10044 | case DT_PLTGOT: |
4ce794b7 | 10045 | s = htab->plt; |
6348e046 | 10046 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
65f38f15 AM |
10047 | break; |
10048 | ||
10049 | case DT_JMPREL: | |
4ce794b7 | 10050 | s = htab->relplt; |
6348e046 | 10051 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
65f38f15 | 10052 | break; |
5bd4f169 | 10053 | |
65f38f15 | 10054 | case DT_PLTRELSZ: |
eea6121a | 10055 | dyn.d_un.d_val = htab->relplt->size; |
5d1634d7 AM |
10056 | break; |
10057 | ||
10058 | case DT_RELASZ: | |
10059 | /* Don't count procedure linkage table relocs in the | |
10060 | overall reloc count. */ | |
4ce794b7 | 10061 | s = htab->relplt; |
6348e046 AM |
10062 | if (s == NULL) |
10063 | continue; | |
eea6121a | 10064 | dyn.d_un.d_val -= s->size; |
6348e046 AM |
10065 | break; |
10066 | ||
10067 | case DT_RELA: | |
10068 | /* We may not be using the standard ELF linker script. | |
10069 | If .rela.plt is the first .rela section, we adjust | |
10070 | DT_RELA to not include it. */ | |
4ce794b7 | 10071 | s = htab->relplt; |
6348e046 AM |
10072 | if (s == NULL) |
10073 | continue; | |
10074 | if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset) | |
10075 | continue; | |
eea6121a | 10076 | dyn.d_un.d_ptr += s->size; |
65f38f15 | 10077 | break; |
5bd4f169 | 10078 | } |
5bd4f169 | 10079 | |
65f38f15 | 10080 | bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon); |
5bd4f169 | 10081 | } |
5bd4f169 AM |
10082 | } |
10083 | ||
eea6121a | 10084 | if (htab->got != NULL && htab->got->size != 0) |
5d1634d7 AM |
10085 | { |
10086 | /* Fill in the first entry in the global offset table. | |
10087 | We use it to hold the link-time TOCbase. */ | |
10088 | bfd_put_64 (output_bfd, | |
60ee0d4a | 10089 | elf_gp (output_bfd) + TOC_BASE_OFF, |
4ce794b7 | 10090 | htab->got->contents); |
5d1634d7 AM |
10091 | |
10092 | /* Set .got entry size. */ | |
4ce794b7 | 10093 | elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 8; |
5d1634d7 AM |
10094 | } |
10095 | ||
eea6121a | 10096 | if (htab->plt != NULL && htab->plt->size != 0) |
5d1634d7 AM |
10097 | { |
10098 | /* Set .plt entry size. */ | |
4ce794b7 | 10099 | elf_section_data (htab->plt->output_section)->this_hdr.sh_entsize |
5d1634d7 AM |
10100 | = PLT_ENTRY_SIZE; |
10101 | } | |
10102 | ||
e717da7e AM |
10103 | /* We need to handle writing out multiple GOT sections ourselves, |
10104 | since we didn't add them to DYNOBJ. */ | |
10105 | while ((dynobj = dynobj->link_next) != NULL) | |
10106 | { | |
10107 | asection *s; | |
10108 | s = ppc64_elf_tdata (dynobj)->got; | |
10109 | if (s != NULL | |
eea6121a | 10110 | && s->size != 0 |
e717da7e AM |
10111 | && s->output_section != bfd_abs_section_ptr |
10112 | && !bfd_set_section_contents (output_bfd, s->output_section, | |
10113 | s->contents, s->output_offset, | |
eea6121a | 10114 | s->size)) |
e717da7e AM |
10115 | return FALSE; |
10116 | s = ppc64_elf_tdata (dynobj)->relgot; | |
10117 | if (s != NULL | |
eea6121a | 10118 | && s->size != 0 |
e717da7e AM |
10119 | && s->output_section != bfd_abs_section_ptr |
10120 | && !bfd_set_section_contents (output_bfd, s->output_section, | |
10121 | s->contents, s->output_offset, | |
eea6121a | 10122 | s->size)) |
e717da7e AM |
10123 | return FALSE; |
10124 | } | |
f6c52c13 | 10125 | |
b34976b6 | 10126 | return TRUE; |
5bd4f169 AM |
10127 | } |
10128 | ||
5bd4f169 | 10129 | #include "elf64-target.h" |