Commit | Line | Data |
---|---|---|
5bd4f169 | 1 | /* PowerPC64-specific support for 64-bit ELF. |
3eb128b2 | 2 | Copyright 1999, 2000, 2001, 2002, 2003, 2004, 2005 |
b2a8e766 | 3 | Free Software Foundation, Inc. |
5bd4f169 AM |
4 | Written by Linus Nordberg, Swox AB <info@swox.com>, |
5 | based on elf32-ppc.c by Ian Lance Taylor. | |
d37c89e5 | 6 | Largely rewritten by Alan Modra <amodra@bigpond.net.au> |
5bd4f169 | 7 | |
ae9a127f | 8 | This file is part of BFD, the Binary File Descriptor library. |
5bd4f169 | 9 | |
ae9a127f NC |
10 | This program is free software; you can redistribute it and/or modify |
11 | it under the terms of the GNU General Public License as published by | |
12 | the Free Software Foundation; either version 2 of the License, or | |
13 | (at your option) any later version. | |
5bd4f169 | 14 | |
ae9a127f NC |
15 | This program is distributed in the hope that it will be useful, |
16 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
18 | GNU General Public License for more details. | |
5bd4f169 | 19 | |
4ce794b7 AM |
20 | You should have received a copy of the GNU General Public License along |
21 | with this program; if not, write to the Free Software Foundation, Inc., | |
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; | |
8860955f AM |
2383 | |
2384 | /* A copy of relocs before they are modified for --emit-relocs. */ | |
2385 | Elf_Internal_Rela *opd_relocs; | |
e717da7e AM |
2386 | }; |
2387 | ||
2388 | #define ppc64_elf_tdata(bfd) \ | |
2389 | ((struct ppc64_elf_obj_tdata *) (bfd)->tdata.any) | |
2390 | ||
2391 | #define ppc64_tlsld_got(bfd) \ | |
2392 | (&ppc64_elf_tdata (bfd)->tlsld_got) | |
2393 | ||
2394 | /* Override the generic function because we store some extras. */ | |
2395 | ||
2396 | static bfd_boolean | |
2397 | ppc64_elf_mkobject (bfd *abfd) | |
2398 | { | |
2399 | bfd_size_type amt = sizeof (struct ppc64_elf_obj_tdata); | |
2400 | abfd->tdata.any = bfd_zalloc (abfd, amt); | |
2401 | if (abfd->tdata.any == NULL) | |
2402 | return FALSE; | |
2403 | return TRUE; | |
2404 | } | |
2405 | ||
ee75fd95 AM |
2406 | /* Return 1 if target is one of ours. */ |
2407 | ||
7b53ace3 | 2408 | static bfd_boolean |
ee75fd95 | 2409 | is_ppc64_elf_target (const struct bfd_target *targ) |
7b53ace3 AM |
2410 | { |
2411 | extern const bfd_target bfd_elf64_powerpc_vec; | |
2412 | extern const bfd_target bfd_elf64_powerpcle_vec; | |
2413 | ||
2414 | return targ == &bfd_elf64_powerpc_vec || targ == &bfd_elf64_powerpcle_vec; | |
2415 | } | |
2416 | ||
feee612b AM |
2417 | /* Fix bad default arch selected for a 64 bit input bfd when the |
2418 | default is 32 bit. */ | |
2419 | ||
b34976b6 | 2420 | static bfd_boolean |
4ce794b7 | 2421 | ppc64_elf_object_p (bfd *abfd) |
feee612b AM |
2422 | { |
2423 | if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 32) | |
2424 | { | |
2425 | Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd); | |
2426 | ||
2427 | if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS64) | |
2428 | { | |
2429 | /* Relies on arch after 32 bit default being 64 bit default. */ | |
2430 | abfd->arch_info = abfd->arch_info->next; | |
2431 | BFD_ASSERT (abfd->arch_info->bits_per_word == 64); | |
2432 | } | |
2433 | } | |
b34976b6 | 2434 | return TRUE; |
feee612b AM |
2435 | } |
2436 | ||
d37c89e5 AM |
2437 | /* Support for core dump NOTE sections. */ |
2438 | ||
2439 | static bfd_boolean | |
2440 | ppc64_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) | |
2441 | { | |
eea6121a | 2442 | size_t offset, size; |
d37c89e5 AM |
2443 | |
2444 | if (note->descsz != 504) | |
2445 | return FALSE; | |
2446 | ||
2447 | /* pr_cursig */ | |
2448 | elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12); | |
2449 | ||
2450 | /* pr_pid */ | |
2451 | elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 32); | |
2452 | ||
2453 | /* pr_reg */ | |
2454 | offset = 112; | |
eea6121a | 2455 | size = 384; |
d37c89e5 AM |
2456 | |
2457 | /* Make a ".reg/999" section. */ | |
2458 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", | |
eea6121a | 2459 | size, note->descpos + offset); |
d37c89e5 AM |
2460 | } |
2461 | ||
2462 | static bfd_boolean | |
2463 | ppc64_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) | |
2464 | { | |
2465 | if (note->descsz != 136) | |
2466 | return FALSE; | |
2467 | ||
2468 | elf_tdata (abfd)->core_program | |
2469 | = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16); | |
2470 | elf_tdata (abfd)->core_command | |
2471 | = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80); | |
2472 | ||
2473 | return TRUE; | |
2474 | } | |
2475 | ||
5bd4f169 AM |
2476 | /* Merge backend specific data from an object file to the output |
2477 | object file when linking. */ | |
2f6d9989 | 2478 | |
b34976b6 | 2479 | static bfd_boolean |
4ce794b7 | 2480 | ppc64_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd) |
5bd4f169 | 2481 | { |
5bd4f169 AM |
2482 | /* Check if we have the same endianess. */ |
2483 | if (ibfd->xvec->byteorder != obfd->xvec->byteorder | |
87e226ce | 2484 | && ibfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN |
5bd4f169 AM |
2485 | && obfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN) |
2486 | { | |
2487 | const char *msg; | |
2488 | ||
2489 | if (bfd_big_endian (ibfd)) | |
d003868e | 2490 | msg = _("%B: compiled for a big endian system " |
4ce794b7 | 2491 | "and target is little endian"); |
5bd4f169 | 2492 | else |
d003868e | 2493 | msg = _("%B: compiled for a little endian system " |
4ce794b7 | 2494 | "and target is big endian"); |
5bd4f169 | 2495 | |
d003868e | 2496 | (*_bfd_error_handler) (msg, ibfd); |
5bd4f169 AM |
2497 | |
2498 | bfd_set_error (bfd_error_wrong_format); | |
b34976b6 | 2499 | return FALSE; |
5bd4f169 AM |
2500 | } |
2501 | ||
b34976b6 | 2502 | return TRUE; |
5bd4f169 | 2503 | } |
f0abc2a1 | 2504 | |
5d35169e AM |
2505 | /* Add extra PPC sections. */ |
2506 | ||
2507 | static struct bfd_elf_special_section const ppc64_elf_special_sections[]= | |
2508 | { | |
7dcb9820 AM |
2509 | { ".sdata", 6, -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, |
2510 | { ".sbss", 5, -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, | |
2511 | { ".plt", 4, 0, SHT_NOBITS, 0 }, | |
2512 | { ".toc", 4, 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
2513 | { ".toc1", 5, 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
2514 | { ".tocbss", 7, 0, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, | |
2515 | { NULL, 0, 0, 0, 0 } | |
5d35169e AM |
2516 | }; |
2517 | ||
f0abc2a1 AM |
2518 | struct _ppc64_elf_section_data |
2519 | { | |
2520 | struct bfd_elf_section_data elf; | |
411e1bfb AM |
2521 | |
2522 | /* An array with one entry for each opd function descriptor. */ | |
f0abc2a1 AM |
2523 | union |
2524 | { | |
411e1bfb | 2525 | /* Points to the function code section for local opd entries. */ |
f0abc2a1 | 2526 | asection **func_sec; |
411e1bfb | 2527 | /* After editing .opd, adjust references to opd local syms. */ |
f0abc2a1 AM |
2528 | long *adjust; |
2529 | } opd; | |
411e1bfb AM |
2530 | |
2531 | /* An array for toc sections, indexed by offset/8. | |
2532 | Specifies the relocation symbol index used at a given toc offset. */ | |
2533 | unsigned *t_symndx; | |
f0abc2a1 AM |
2534 | }; |
2535 | ||
2536 | #define ppc64_elf_section_data(sec) \ | |
411e1bfb | 2537 | ((struct _ppc64_elf_section_data *) elf_section_data (sec)) |
f0abc2a1 AM |
2538 | |
2539 | static bfd_boolean | |
4ce794b7 | 2540 | ppc64_elf_new_section_hook (bfd *abfd, asection *sec) |
f0abc2a1 AM |
2541 | { |
2542 | struct _ppc64_elf_section_data *sdata; | |
2543 | bfd_size_type amt = sizeof (*sdata); | |
2544 | ||
4ce794b7 | 2545 | sdata = bfd_zalloc (abfd, amt); |
f0abc2a1 AM |
2546 | if (sdata == NULL) |
2547 | return FALSE; | |
4ce794b7 | 2548 | sec->used_by_bfd = sdata; |
f0abc2a1 AM |
2549 | |
2550 | return _bfd_elf_new_section_hook (abfd, sec); | |
2551 | } | |
4025353c AM |
2552 | |
2553 | static void * | |
2554 | get_opd_info (asection * sec) | |
2555 | { | |
2556 | if (sec != NULL | |
2557 | && ppc64_elf_section_data (sec) != NULL | |
2558 | && ppc64_elf_section_data (sec)->opd.adjust != NULL) | |
2559 | return ppc64_elf_section_data (sec)->opd.adjust; | |
2560 | return NULL; | |
2561 | } | |
90e3cdf2 JJ |
2562 | \f |
2563 | /* Parameters for the qsort hook. */ | |
2564 | static asection *synthetic_opd; | |
2565 | static bfd_boolean synthetic_relocatable; | |
2566 | ||
699733f6 | 2567 | /* qsort comparison function for ppc64_elf_get_synthetic_symtab. */ |
90e3cdf2 JJ |
2568 | |
2569 | static int | |
2570 | compare_symbols (const void *ap, const void *bp) | |
2571 | { | |
2572 | const asymbol *a = * (const asymbol **) ap; | |
2573 | const asymbol *b = * (const asymbol **) bp; | |
2574 | ||
699733f6 AM |
2575 | /* Section symbols first. */ |
2576 | if ((a->flags & BSF_SECTION_SYM) && !(b->flags & BSF_SECTION_SYM)) | |
90e3cdf2 | 2577 | return -1; |
699733f6 | 2578 | if (!(a->flags & BSF_SECTION_SYM) && (b->flags & BSF_SECTION_SYM)) |
90e3cdf2 JJ |
2579 | return 1; |
2580 | ||
699733f6 | 2581 | /* then .opd symbols. */ |
90e3cdf2 JJ |
2582 | if (a->section == synthetic_opd && b->section != synthetic_opd) |
2583 | return -1; | |
2584 | if (a->section != synthetic_opd && b->section == synthetic_opd) | |
2585 | return 1; | |
2586 | ||
699733f6 | 2587 | /* then other code symbols. */ |
90e3cdf2 JJ |
2588 | if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) |
2589 | == (SEC_CODE | SEC_ALLOC) | |
2590 | && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
2591 | != (SEC_CODE | SEC_ALLOC)) | |
2592 | return -1; | |
2593 | ||
2594 | if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
2595 | != (SEC_CODE | SEC_ALLOC) | |
2596 | && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
2597 | == (SEC_CODE | SEC_ALLOC)) | |
2598 | return 1; | |
2599 | ||
2600 | if (synthetic_relocatable) | |
2601 | { | |
2602 | if (a->section->id < b->section->id) | |
2603 | return -1; | |
2604 | ||
2605 | if (a->section->id > b->section->id) | |
2606 | return 1; | |
2607 | } | |
2608 | ||
2609 | if (a->value + a->section->vma < b->value + b->section->vma) | |
2610 | return -1; | |
2611 | ||
2612 | if (a->value + a->section->vma > b->value + b->section->vma) | |
2613 | return 1; | |
2614 | ||
2615 | return 0; | |
2616 | } | |
2617 | ||
699733f6 | 2618 | /* Search SYMS for a symbol of the given VALUE. */ |
90e3cdf2 | 2619 | |
699733f6 AM |
2620 | static asymbol * |
2621 | sym_exists_at (asymbol **syms, long lo, long hi, int id, bfd_vma value) | |
90e3cdf2 | 2622 | { |
699733f6 | 2623 | long mid; |
90e3cdf2 | 2624 | |
699733f6 AM |
2625 | if (id == -1) |
2626 | { | |
2627 | while (lo < hi) | |
2628 | { | |
2629 | mid = (lo + hi) >> 1; | |
2630 | if (syms[mid]->value + syms[mid]->section->vma < value) | |
2631 | lo = mid + 1; | |
2632 | else if (syms[mid]->value + syms[mid]->section->vma > value) | |
2633 | hi = mid; | |
2634 | else | |
2635 | return syms[mid]; | |
2636 | } | |
2637 | } | |
2638 | else | |
2639 | { | |
2640 | while (lo < hi) | |
2641 | { | |
2642 | mid = (lo + hi) >> 1; | |
2643 | if (syms[mid]->section->id < id) | |
2644 | lo = mid + 1; | |
2645 | else if (syms[mid]->section->id > id) | |
2646 | hi = mid; | |
2647 | else if (syms[mid]->value < value) | |
2648 | lo = mid + 1; | |
2649 | else if (syms[mid]->value > value) | |
2650 | hi = mid; | |
2651 | else | |
2652 | return syms[mid]; | |
2653 | } | |
2654 | } | |
2655 | return NULL; | |
90e3cdf2 JJ |
2656 | } |
2657 | ||
699733f6 AM |
2658 | /* Create synthetic symbols, effectively restoring "dot-symbol" function |
2659 | entry syms. */ | |
90e3cdf2 JJ |
2660 | |
2661 | static long | |
a7535cf3 AM |
2662 | ppc64_elf_get_synthetic_symtab (bfd *abfd, |
2663 | long static_count, asymbol **static_syms, | |
2664 | long dyn_count, asymbol **dyn_syms, | |
c9727e01 | 2665 | asymbol **ret) |
90e3cdf2 JJ |
2666 | { |
2667 | asymbol *s; | |
699733f6 AM |
2668 | long i; |
2669 | long count; | |
90e3cdf2 | 2670 | char *names; |
a7535cf3 | 2671 | long symcount, codesecsym, codesecsymend, secsymend, opdsymend; |
699733f6 | 2672 | asection *opd; |
90e3cdf2 | 2673 | bfd_boolean relocatable = (abfd->flags & (EXEC_P | DYNAMIC)) == 0; |
a7535cf3 | 2674 | asymbol **syms; |
90e3cdf2 JJ |
2675 | |
2676 | *ret = NULL; | |
2677 | ||
2678 | opd = bfd_get_section_by_name (abfd, ".opd"); | |
2679 | if (opd == NULL) | |
2680 | return 0; | |
2681 | ||
a7535cf3 | 2682 | symcount = static_count; |
c9727e01 | 2683 | if (!relocatable) |
a7535cf3 | 2684 | symcount += dyn_count; |
90e3cdf2 | 2685 | if (symcount == 0) |
c9727e01 | 2686 | return 0; |
90e3cdf2 | 2687 | |
a7535cf3 AM |
2688 | syms = bfd_malloc ((symcount + 1) * sizeof (*syms)); |
2689 | if (syms == NULL) | |
2690 | return 0; | |
2691 | ||
2692 | if (!relocatable && static_count != 0 && dyn_count != 0) | |
2693 | { | |
2694 | /* Use both symbol tables. */ | |
2695 | memcpy (syms, static_syms, static_count * sizeof (*syms)); | |
2696 | memcpy (syms + static_count, dyn_syms, (dyn_count + 1) * sizeof (*syms)); | |
2697 | } | |
2698 | else if (!relocatable && static_count == 0) | |
2699 | memcpy (syms, dyn_syms, (symcount + 1) * sizeof (*syms)); | |
2700 | else | |
2701 | memcpy (syms, static_syms, (symcount + 1) * sizeof (*syms)); | |
2702 | ||
90e3cdf2 JJ |
2703 | synthetic_opd = opd; |
2704 | synthetic_relocatable = relocatable; | |
595da8c5 | 2705 | qsort (syms, symcount, sizeof (*syms), compare_symbols); |
90e3cdf2 | 2706 | |
c9727e01 AM |
2707 | if (!relocatable && symcount > 1) |
2708 | { | |
2709 | long j; | |
2710 | /* Trim duplicate syms, since we may have merged the normal and | |
2711 | dynamic symbols. Actually, we only care about syms that have | |
2712 | different values, so trim any with the same value. */ | |
2713 | for (i = 1, j = 1; i < symcount; ++i) | |
2714 | if (syms[i - 1]->value + syms[i - 1]->section->vma | |
2715 | != syms[i]->value + syms[i]->section->vma) | |
2716 | syms[j++] = syms[i]; | |
2717 | symcount = j; | |
2718 | } | |
2719 | ||
699733f6 AM |
2720 | i = 0; |
2721 | if (syms[i]->section == opd) | |
2722 | ++i; | |
2723 | codesecsym = i; | |
90e3cdf2 | 2724 | |
699733f6 AM |
2725 | for (; i < symcount; ++i) |
2726 | if (((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
2727 | != (SEC_CODE | SEC_ALLOC)) | |
2728 | || (syms[i]->flags & BSF_SECTION_SYM) == 0) | |
2729 | break; | |
2730 | codesecsymend = i; | |
90e3cdf2 | 2731 | |
699733f6 AM |
2732 | for (; i < symcount; ++i) |
2733 | if ((syms[i]->flags & BSF_SECTION_SYM) == 0) | |
2734 | break; | |
2735 | secsymend = i; | |
90e3cdf2 | 2736 | |
699733f6 AM |
2737 | for (; i < symcount; ++i) |
2738 | if (syms[i]->section != opd) | |
2739 | break; | |
2740 | opdsymend = i; | |
90e3cdf2 | 2741 | |
699733f6 AM |
2742 | for (; i < symcount; ++i) |
2743 | if ((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
2744 | != (SEC_CODE | SEC_ALLOC)) | |
2745 | break; | |
2746 | symcount = i; | |
2747 | ||
c9727e01 | 2748 | count = 0; |
699733f6 | 2749 | if (opdsymend == secsymend) |
c9727e01 | 2750 | goto done; |
90e3cdf2 | 2751 | |
699733f6 | 2752 | if (relocatable) |
90e3cdf2 | 2753 | { |
699733f6 AM |
2754 | bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean); |
2755 | arelent *r; | |
2756 | size_t size; | |
2757 | long relcount; | |
90e3cdf2 | 2758 | |
699733f6 | 2759 | slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table; |
90e3cdf2 JJ |
2760 | relcount = (opd->flags & SEC_RELOC) ? opd->reloc_count : 0; |
2761 | ||
2762 | if (! relcount | |
595da8c5 | 2763 | || ! (*slurp_relocs) (abfd, opd, static_syms, FALSE)) |
c9727e01 | 2764 | goto done; |
90e3cdf2 | 2765 | |
699733f6 | 2766 | size = 0; |
595da8c5 | 2767 | for (i = secsymend, r = opd->relocation; i < opdsymend; ++i) |
699733f6 AM |
2768 | { |
2769 | asymbol *sym; | |
90e3cdf2 | 2770 | |
595da8c5 | 2771 | while (r < opd->relocation + relcount |
699733f6 AM |
2772 | && r->address < syms[i]->value + opd->vma) |
2773 | ++r; | |
90e3cdf2 | 2774 | |
595da8c5 | 2775 | if (r == opd->relocation + relcount) |
699733f6 | 2776 | break; |
90e3cdf2 | 2777 | |
699733f6 AM |
2778 | if (r->address != syms[i]->value + opd->vma) |
2779 | continue; | |
90e3cdf2 | 2780 | |
699733f6 AM |
2781 | if (r->howto->type != R_PPC64_ADDR64) |
2782 | continue; | |
90e3cdf2 | 2783 | |
699733f6 AM |
2784 | sym = *r->sym_ptr_ptr; |
2785 | if (!sym_exists_at (syms, opdsymend, symcount, | |
2786 | sym->section->id, sym->value + r->addend)) | |
2787 | { | |
2788 | ++count; | |
2789 | size += sizeof (asymbol); | |
2790 | size += strlen (syms[i]->name) + 2; | |
2791 | } | |
2792 | } | |
90e3cdf2 | 2793 | |
699733f6 AM |
2794 | s = *ret = bfd_malloc (size); |
2795 | if (s == NULL) | |
2796 | { | |
c9727e01 AM |
2797 | count = 0; |
2798 | goto done; | |
699733f6 | 2799 | } |
90e3cdf2 | 2800 | |
699733f6 | 2801 | names = (char *) (s + count); |
90e3cdf2 | 2802 | |
595da8c5 | 2803 | for (i = secsymend, r = opd->relocation; i < opdsymend; ++i) |
90e3cdf2 | 2804 | { |
699733f6 | 2805 | asymbol *sym; |
90e3cdf2 | 2806 | |
595da8c5 | 2807 | while (r < opd->relocation + relcount |
699733f6 AM |
2808 | && r->address < syms[i]->value + opd->vma) |
2809 | ++r; | |
90e3cdf2 | 2810 | |
595da8c5 | 2811 | if (r == opd->relocation + relcount) |
699733f6 AM |
2812 | break; |
2813 | ||
2814 | if (r->address != syms[i]->value + opd->vma) | |
2815 | continue; | |
2816 | ||
2817 | if (r->howto->type != R_PPC64_ADDR64) | |
2818 | continue; | |
90e3cdf2 | 2819 | |
699733f6 AM |
2820 | sym = *r->sym_ptr_ptr; |
2821 | if (!sym_exists_at (syms, opdsymend, symcount, | |
2822 | sym->section->id, sym->value + r->addend)) | |
2823 | { | |
2824 | size_t len; | |
2825 | ||
2826 | *s = *syms[i]; | |
2827 | s->section = sym->section; | |
2828 | s->value = sym->value + r->addend; | |
2829 | s->name = names; | |
2830 | *names++ = '.'; | |
2831 | len = strlen (syms[i]->name); | |
2832 | memcpy (names, syms[i]->name, len + 1); | |
2833 | names += len + 1; | |
2834 | s++; | |
2835 | } | |
2836 | } | |
2837 | } | |
2838 | else | |
90e3cdf2 | 2839 | { |
699733f6 AM |
2840 | bfd_byte *contents; |
2841 | size_t size; | |
90e3cdf2 | 2842 | |
699733f6 AM |
2843 | if (!bfd_malloc_and_get_section (abfd, opd, &contents)) |
2844 | { | |
2845 | if (contents) | |
c9727e01 AM |
2846 | { |
2847 | free_contents_and_exit: | |
2848 | free (contents); | |
2849 | } | |
2850 | goto done; | |
699733f6 | 2851 | } |
90e3cdf2 | 2852 | |
699733f6 AM |
2853 | size = 0; |
2854 | for (i = secsymend; i < opdsymend; ++i) | |
2855 | { | |
2856 | bfd_vma ent; | |
90e3cdf2 | 2857 | |
699733f6 AM |
2858 | ent = bfd_get_64 (abfd, contents + syms[i]->value); |
2859 | if (!sym_exists_at (syms, opdsymend, symcount, -1, ent)) | |
2860 | { | |
2861 | ++count; | |
2862 | size += sizeof (asymbol); | |
2863 | size += strlen (syms[i]->name) + 2; | |
2864 | } | |
2865 | } | |
90e3cdf2 | 2866 | |
699733f6 AM |
2867 | s = *ret = bfd_malloc (size); |
2868 | if (s == NULL) | |
2869 | { | |
c9727e01 AM |
2870 | count = 0; |
2871 | goto free_contents_and_exit; | |
699733f6 | 2872 | } |
90e3cdf2 | 2873 | |
699733f6 | 2874 | names = (char *) (s + count); |
90e3cdf2 | 2875 | |
699733f6 | 2876 | for (i = secsymend; i < opdsymend; ++i) |
90e3cdf2 | 2877 | { |
699733f6 | 2878 | bfd_vma ent; |
90e3cdf2 | 2879 | |
699733f6 AM |
2880 | ent = bfd_get_64 (abfd, contents + syms[i]->value); |
2881 | if (!sym_exists_at (syms, opdsymend, symcount, -1, ent)) | |
90e3cdf2 | 2882 | { |
c9727e01 | 2883 | long lo, hi; |
699733f6 | 2884 | size_t len; |
c9727e01 | 2885 | asection *sec = abfd->sections; |
90e3cdf2 | 2886 | |
699733f6 AM |
2887 | *s = *syms[i]; |
2888 | lo = codesecsym; | |
2889 | hi = codesecsymend; | |
2890 | while (lo < hi) | |
2891 | { | |
c9727e01 | 2892 | long mid = (lo + hi) >> 1; |
699733f6 AM |
2893 | if (syms[mid]->section->vma < ent) |
2894 | lo = mid + 1; | |
2895 | else if (syms[mid]->section->vma > ent) | |
2896 | hi = mid; | |
2897 | else | |
c9727e01 AM |
2898 | { |
2899 | sec = syms[mid]->section; | |
2900 | break; | |
2901 | } | |
699733f6 AM |
2902 | } |
2903 | ||
c9727e01 | 2904 | if (lo >= hi && lo > codesecsym) |
699733f6 | 2905 | sec = syms[lo - 1]->section; |
699733f6 AM |
2906 | |
2907 | for (; sec != NULL; sec = sec->next) | |
2908 | { | |
2909 | if (sec->vma > ent) | |
2910 | break; | |
2911 | if ((sec->flags & SEC_ALLOC) == 0 | |
2912 | || (sec->flags & SEC_LOAD) == 0) | |
2913 | break; | |
2914 | if ((sec->flags & SEC_CODE) != 0) | |
2915 | s->section = sec; | |
2916 | } | |
2917 | s->value = ent - s->section->vma; | |
2918 | s->name = names; | |
2919 | *names++ = '.'; | |
2920 | len = strlen (syms[i]->name); | |
2921 | memcpy (names, syms[i]->name, len + 1); | |
2922 | names += len + 1; | |
2923 | s++; | |
90e3cdf2 | 2924 | } |
90e3cdf2 | 2925 | } |
699733f6 | 2926 | free (contents); |
90e3cdf2 JJ |
2927 | } |
2928 | ||
c9727e01 | 2929 | done: |
a7535cf3 | 2930 | free (syms); |
90e3cdf2 JJ |
2931 | return count; |
2932 | } | |
5bd4f169 | 2933 | \f |
65f38f15 AM |
2934 | /* The following functions are specific to the ELF linker, while |
2935 | functions above are used generally. Those named ppc64_elf_* are | |
2936 | called by the main ELF linker code. They appear in this file more | |
2937 | or less in the order in which they are called. eg. | |
2938 | ppc64_elf_check_relocs is called early in the link process, | |
2939 | ppc64_elf_finish_dynamic_sections is one of the last functions | |
e86ce104 AM |
2940 | called. |
2941 | ||
2942 | PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that | |
2943 | functions have both a function code symbol and a function descriptor | |
2944 | symbol. A call to foo in a relocatable object file looks like: | |
2945 | ||
2946 | . .text | |
2947 | . x: | |
2948 | . bl .foo | |
2949 | . nop | |
2950 | ||
2951 | The function definition in another object file might be: | |
2952 | ||
2953 | . .section .opd | |
2954 | . foo: .quad .foo | |
2955 | . .quad .TOC.@tocbase | |
2956 | . .quad 0 | |
2957 | . | |
2958 | . .text | |
2959 | . .foo: blr | |
2960 | ||
2961 | When the linker resolves the call during a static link, the branch | |
2962 | unsurprisingly just goes to .foo and the .opd information is unused. | |
2963 | If the function definition is in a shared library, things are a little | |
2964 | different: The call goes via a plt call stub, the opd information gets | |
2965 | copied to the plt, and the linker patches the nop. | |
2966 | ||
2967 | . x: | |
2968 | . bl .foo_stub | |
2969 | . ld 2,40(1) | |
2970 | . | |
2971 | . | |
2972 | . .foo_stub: | |
2973 | . addis 12,2,Lfoo@toc@ha # in practice, the call stub | |
411e1bfb | 2974 | . addi 12,12,Lfoo@toc@l # is slightly optimized, but |
e86ce104 AM |
2975 | . std 2,40(1) # this is the general idea |
2976 | . ld 11,0(12) | |
2977 | . ld 2,8(12) | |
2978 | . mtctr 11 | |
2979 | . ld 11,16(12) | |
2980 | . bctr | |
2981 | . | |
2982 | . .section .plt | |
2983 | . Lfoo: reloc (R_PPC64_JMP_SLOT, foo) | |
2984 | ||
2985 | The "reloc ()" notation is supposed to indicate that the linker emits | |
2986 | an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd | |
2987 | copying. | |
2988 | ||
2989 | What are the difficulties here? Well, firstly, the relocations | |
2990 | examined by the linker in check_relocs are against the function code | |
2991 | sym .foo, while the dynamic relocation in the plt is emitted against | |
2992 | the function descriptor symbol, foo. Somewhere along the line, we need | |
2993 | to carefully copy dynamic link information from one symbol to the other. | |
2994 | Secondly, the generic part of the elf linker will make .foo a dynamic | |
2995 | symbol as is normal for most other backends. We need foo dynamic | |
2996 | instead, at least for an application final link. However, when | |
2997 | creating a shared library containing foo, we need to have both symbols | |
2998 | dynamic so that references to .foo are satisfied during the early | |
2999 | stages of linking. Otherwise the linker might decide to pull in a | |
8387904d AM |
3000 | definition from some other object, eg. a static library. |
3001 | ||
3002 | Update: As of August 2004, we support a new convention. Function | |
3003 | calls may use the function descriptor symbol, ie. "bl foo". This | |
3004 | behaves exactly as "bl .foo". */ | |
65f38f15 AM |
3005 | |
3006 | /* The linker needs to keep track of the number of relocs that it | |
3007 | decides to copy as dynamic relocs in check_relocs for each symbol. | |
3008 | This is so that it can later discard them if they are found to be | |
3009 | unnecessary. We store the information in a field extending the | |
3010 | regular ELF linker hash table. */ | |
3011 | ||
3012 | struct ppc_dyn_relocs | |
3013 | { | |
3014 | struct ppc_dyn_relocs *next; | |
3015 | ||
3016 | /* The input section of the reloc. */ | |
3017 | asection *sec; | |
3018 | ||
3019 | /* Total number of relocs copied for the input section. */ | |
3020 | bfd_size_type count; | |
3021 | ||
3022 | /* Number of pc-relative relocs copied for the input section. */ | |
3023 | bfd_size_type pc_count; | |
3024 | }; | |
3025 | ||
411e1bfb AM |
3026 | /* Track GOT entries needed for a given symbol. We might need more |
3027 | than one got entry per symbol. */ | |
3028 | struct got_entry | |
3029 | { | |
3030 | struct got_entry *next; | |
3031 | ||
e7b938ca | 3032 | /* The symbol addend that we'll be placing in the GOT. */ |
411e1bfb AM |
3033 | bfd_vma addend; |
3034 | ||
e717da7e AM |
3035 | /* Unlike other ELF targets, we use separate GOT entries for the same |
3036 | symbol referenced from different input files. This is to support | |
3037 | automatic multiple TOC/GOT sections, where the TOC base can vary | |
3038 | from one input file to another. | |
3039 | ||
3040 | Point to the BFD owning this GOT entry. */ | |
3041 | bfd *owner; | |
3042 | ||
3043 | /* Zero for non-tls entries, or TLS_TLS and one of TLS_GD, TLS_LD, | |
3044 | TLS_TPREL or TLS_DTPREL for tls entries. */ | |
3045 | char tls_type; | |
3046 | ||
e7b938ca | 3047 | /* Reference count until size_dynamic_sections, GOT offset thereafter. */ |
411e1bfb AM |
3048 | union |
3049 | { | |
3050 | bfd_signed_vma refcount; | |
3051 | bfd_vma offset; | |
3052 | } got; | |
411e1bfb AM |
3053 | }; |
3054 | ||
3055 | /* The same for PLT. */ | |
3056 | struct plt_entry | |
3057 | { | |
3058 | struct plt_entry *next; | |
3059 | ||
3060 | bfd_vma addend; | |
3061 | ||
3062 | union | |
3063 | { | |
3064 | bfd_signed_vma refcount; | |
3065 | bfd_vma offset; | |
3066 | } plt; | |
3067 | }; | |
3068 | ||
65f38f15 | 3069 | /* Of those relocs that might be copied as dynamic relocs, this macro |
58ac9f71 AM |
3070 | selects those that must be copied when linking a shared library, |
3071 | even when the symbol is local. */ | |
65f38f15 | 3072 | |
411e1bfb | 3073 | #define MUST_BE_DYN_RELOC(RTYPE) \ |
805fc799 AM |
3074 | ((RTYPE) != R_PPC64_REL32 \ |
3075 | && (RTYPE) != R_PPC64_REL64 \ | |
04c9666a | 3076 | && (RTYPE) != R_PPC64_REL30) |
65f38f15 | 3077 | |
f4656909 AM |
3078 | /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid |
3079 | copying dynamic variables from a shared lib into an app's dynbss | |
3080 | section, and instead use a dynamic relocation to point into the | |
5d35169e AM |
3081 | shared lib. With code that gcc generates, it's vital that this be |
3082 | enabled; In the PowerPC64 ABI, the address of a function is actually | |
3083 | the address of a function descriptor, which resides in the .opd | |
3084 | section. gcc uses the descriptor directly rather than going via the | |
3085 | GOT as some other ABI's do, which means that initialized function | |
3086 | pointers must reference the descriptor. Thus, a function pointer | |
3087 | initialized to the address of a function in a shared library will | |
3088 | either require a copy reloc, or a dynamic reloc. Using a copy reloc | |
4cc11e76 | 3089 | redefines the function descriptor symbol to point to the copy. This |
5d35169e AM |
3090 | presents a problem as a plt entry for that function is also |
3091 | initialized from the function descriptor symbol and the copy reloc | |
3092 | may not be initialized first. */ | |
a23b6845 | 3093 | #define ELIMINATE_COPY_RELOCS 1 |
f4656909 | 3094 | |
721956f4 AM |
3095 | /* Section name for stubs is the associated section name plus this |
3096 | string. */ | |
3097 | #define STUB_SUFFIX ".stub" | |
3098 | ||
3099 | /* Linker stubs. | |
3100 | ppc_stub_long_branch: | |
3101 | Used when a 14 bit branch (or even a 24 bit branch) can't reach its | |
3102 | destination, but a 24 bit branch in a stub section will reach. | |
3103 | . b dest | |
3104 | ||
3105 | ppc_stub_plt_branch: | |
3106 | Similar to the above, but a 24 bit branch in the stub section won't | |
3107 | reach its destination. | |
87e226ce AM |
3108 | . addis %r12,%r2,xxx@toc@ha |
3109 | . ld %r11,xxx@toc@l(%r12) | |
721956f4 AM |
3110 | . mtctr %r11 |
3111 | . bctr | |
3112 | ||
3113 | ppc_stub_plt_call: | |
2c66dc6c AM |
3114 | Used to call a function in a shared library. If it so happens that |
3115 | the plt entry referenced crosses a 64k boundary, then an extra | |
3116 | "addis %r12,%r12,1" will be inserted before the load at xxx+8 or | |
3117 | xxx+16 as appropriate. | |
87e226ce | 3118 | . addis %r12,%r2,xxx@toc@ha |
721956f4 | 3119 | . std %r2,40(%r1) |
87e226ce AM |
3120 | . ld %r11,xxx+0@toc@l(%r12) |
3121 | . ld %r2,xxx+8@toc@l(%r12) | |
721956f4 | 3122 | . mtctr %r11 |
87e226ce | 3123 | . ld %r11,xxx+16@toc@l(%r12) |
721956f4 | 3124 | . bctr |
ad8e1ba5 AM |
3125 | |
3126 | ppc_stub_long_branch and ppc_stub_plt_branch may also have additional | |
3127 | code to adjust the value and save r2 to support multiple toc sections. | |
3128 | A ppc_stub_long_branch with an r2 offset looks like: | |
3129 | . std %r2,40(%r1) | |
3130 | . addis %r2,%r2,off@ha | |
3131 | . addi %r2,%r2,off@l | |
3132 | . b dest | |
3133 | ||
3134 | A ppc_stub_plt_branch with an r2 offset looks like: | |
3135 | . std %r2,40(%r1) | |
3136 | . addis %r12,%r2,xxx@toc@ha | |
3137 | . ld %r11,xxx@toc@l(%r12) | |
3138 | . addis %r2,%r2,off@ha | |
3139 | . addi %r2,%r2,off@l | |
3140 | . mtctr %r11 | |
3141 | . bctr | |
721956f4 AM |
3142 | */ |
3143 | ||
3144 | enum ppc_stub_type { | |
3145 | ppc_stub_none, | |
3146 | ppc_stub_long_branch, | |
ad8e1ba5 | 3147 | ppc_stub_long_branch_r2off, |
721956f4 | 3148 | ppc_stub_plt_branch, |
ad8e1ba5 | 3149 | ppc_stub_plt_branch_r2off, |
721956f4 AM |
3150 | ppc_stub_plt_call |
3151 | }; | |
3152 | ||
3153 | struct ppc_stub_hash_entry { | |
3154 | ||
3155 | /* Base hash table entry structure. */ | |
3156 | struct bfd_hash_entry root; | |
3157 | ||
ad8e1ba5 AM |
3158 | enum ppc_stub_type stub_type; |
3159 | ||
721956f4 AM |
3160 | /* The stub section. */ |
3161 | asection *stub_sec; | |
3162 | ||
3163 | /* Offset within stub_sec of the beginning of this stub. */ | |
3164 | bfd_vma stub_offset; | |
3165 | ||
3166 | /* Given the symbol's value and its section we can determine its final | |
3167 | value when building the stubs (so the stub knows where to jump. */ | |
3168 | bfd_vma target_value; | |
3169 | asection *target_section; | |
3170 | ||
721956f4 AM |
3171 | /* The symbol table entry, if any, that this was derived from. */ |
3172 | struct ppc_link_hash_entry *h; | |
3173 | ||
411e1bfb AM |
3174 | /* And the reloc addend that this was derived from. */ |
3175 | bfd_vma addend; | |
3176 | ||
721956f4 AM |
3177 | /* Where this stub is being called from, or, in the case of combined |
3178 | stub sections, the first input section in the group. */ | |
3179 | asection *id_sec; | |
3180 | }; | |
3181 | ||
3182 | struct ppc_branch_hash_entry { | |
3183 | ||
3184 | /* Base hash table entry structure. */ | |
3185 | struct bfd_hash_entry root; | |
3186 | ||
3187 | /* Offset within .branch_lt. */ | |
3188 | unsigned int offset; | |
3189 | ||
3190 | /* Generation marker. */ | |
3191 | unsigned int iter; | |
3192 | }; | |
65f38f15 AM |
3193 | |
3194 | struct ppc_link_hash_entry | |
3195 | { | |
3196 | struct elf_link_hash_entry elf; | |
3197 | ||
721956f4 AM |
3198 | /* A pointer to the most recently used stub hash entry against this |
3199 | symbol. */ | |
3200 | struct ppc_stub_hash_entry *stub_cache; | |
3201 | ||
65f38f15 AM |
3202 | /* Track dynamic relocs copied for this symbol. */ |
3203 | struct ppc_dyn_relocs *dyn_relocs; | |
e86ce104 | 3204 | |
721956f4 | 3205 | /* Link between function code and descriptor symbols. */ |
34814b9f | 3206 | struct ppc_link_hash_entry *oh; |
721956f4 | 3207 | |
e86ce104 AM |
3208 | /* Flag function code and descriptor symbols. */ |
3209 | unsigned int is_func:1; | |
3210 | unsigned int is_func_descriptor:1; | |
411e1bfb | 3211 | |
c5614fa4 AM |
3212 | /* Whether global opd/toc sym has been adjusted or not. |
3213 | After ppc64_elf_edit_opd/ppc64_elf_edit_toc has run, this flag | |
3214 | should be set for all globals defined in any opd/toc section. */ | |
754021d0 AM |
3215 | unsigned int adjust_done:1; |
3216 | ||
99877b66 AM |
3217 | /* Set if we twiddled this symbol to weak at some stage. */ |
3218 | unsigned int was_undefined:1; | |
3219 | ||
411e1bfb | 3220 | /* Contexts in which symbol is used in the GOT (or TOC). |
e7b938ca AM |
3221 | TLS_GD .. TLS_EXPLICIT bits are or'd into the mask as the |
3222 | corresponding relocs are encountered during check_relocs. | |
3223 | tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to | |
3224 | indicate the corresponding GOT entry type is not needed. | |
3225 | tls_optimize may also set TLS_TPRELGD when a GD reloc turns into | |
3226 | a TPREL one. We use a separate flag rather than setting TPREL | |
3227 | just for convenience in distinguishing the two cases. */ | |
3228 | #define TLS_GD 1 /* GD reloc. */ | |
3229 | #define TLS_LD 2 /* LD reloc. */ | |
3230 | #define TLS_TPREL 4 /* TPREL reloc, => IE. */ | |
3231 | #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */ | |
3232 | #define TLS_TLS 16 /* Any TLS reloc. */ | |
3233 | #define TLS_EXPLICIT 32 /* Marks TOC section TLS relocs. */ | |
3234 | #define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */ | |
3235 | char tls_mask; | |
65f38f15 AM |
3236 | }; |
3237 | ||
3238 | /* ppc64 ELF linker hash table. */ | |
3239 | ||
3240 | struct ppc_link_hash_table | |
3241 | { | |
3242 | struct elf_link_hash_table elf; | |
3243 | ||
721956f4 AM |
3244 | /* The stub hash table. */ |
3245 | struct bfd_hash_table stub_hash_table; | |
3246 | ||
3247 | /* Another hash table for plt_branch stubs. */ | |
3248 | struct bfd_hash_table branch_hash_table; | |
3249 | ||
3250 | /* Linker stub bfd. */ | |
3251 | bfd *stub_bfd; | |
3252 | ||
3253 | /* Linker call-backs. */ | |
4ce794b7 AM |
3254 | asection * (*add_stub_section) (const char *, asection *); |
3255 | void (*layout_sections_again) (void); | |
721956f4 AM |
3256 | |
3257 | /* Array to keep track of which stub sections have been created, and | |
3258 | information on stub grouping. */ | |
3259 | struct map_stub { | |
3260 | /* This is the section to which stubs in the group will be attached. */ | |
3261 | asection *link_sec; | |
3262 | /* The stub section. */ | |
3263 | asection *stub_sec; | |
ad8e1ba5 AM |
3264 | /* Along with elf_gp, specifies the TOC pointer used in this group. */ |
3265 | bfd_vma toc_off; | |
721956f4 AM |
3266 | } *stub_group; |
3267 | ||
ad8e1ba5 AM |
3268 | /* Temp used when calculating TOC pointers. */ |
3269 | bfd_vma toc_curr; | |
3270 | ||
8f3bab57 AM |
3271 | /* Highest input section id. */ |
3272 | int top_id; | |
3273 | ||
734b6cf9 AM |
3274 | /* Highest output section index. */ |
3275 | int top_index; | |
3276 | ||
3277 | /* List of input sections for each output section. */ | |
3278 | asection **input_list; | |
721956f4 | 3279 | |
65f38f15 | 3280 | /* Short-cuts to get to dynamic linker sections. */ |
4ce794b7 | 3281 | asection *got; |
4ce794b7 AM |
3282 | asection *plt; |
3283 | asection *relplt; | |
3284 | asection *dynbss; | |
3285 | asection *relbss; | |
3286 | asection *glink; | |
82bd7b59 | 3287 | asection *sfpr; |
4ce794b7 AM |
3288 | asection *brlt; |
3289 | asection *relbrlt; | |
ec338859 | 3290 | |
8387904d AM |
3291 | /* Shortcut to .__tls_get_addr and __tls_get_addr. */ |
3292 | struct ppc_link_hash_entry *tls_get_addr; | |
3293 | struct ppc_link_hash_entry *tls_get_addr_fd; | |
411e1bfb | 3294 | |
9b5ecbd0 AM |
3295 | /* Statistics. */ |
3296 | unsigned long stub_count[ppc_stub_plt_call]; | |
3297 | ||
ee75fd95 AM |
3298 | /* Number of stubs against global syms. */ |
3299 | unsigned long stub_globals; | |
3300 | ||
ad8e1ba5 | 3301 | /* Set if we should emit symbols for stubs. */ |
99877b66 | 3302 | unsigned int emit_stub_syms:1; |
ad8e1ba5 | 3303 | |
4c52953f AM |
3304 | /* Support for multiple toc sections. */ |
3305 | unsigned int no_multi_toc:1; | |
3306 | unsigned int multi_toc_needed:1; | |
3307 | ||
5d1634d7 | 3308 | /* Set on error. */ |
99877b66 | 3309 | unsigned int stub_error:1; |
721956f4 AM |
3310 | |
3311 | /* Flag set when small branches are detected. Used to | |
3312 | select suitable defaults for the stub group size. */ | |
99877b66 AM |
3313 | unsigned int has_14bit_branch:1; |
3314 | ||
3315 | /* Temp used by ppc64_elf_check_directives. */ | |
3316 | unsigned int twiddled_syms:1; | |
721956f4 AM |
3317 | |
3318 | /* Incremented every time we size stubs. */ | |
3319 | unsigned int stub_iteration; | |
5d1634d7 | 3320 | |
ec338859 AM |
3321 | /* Small local sym to section mapping cache. */ |
3322 | struct sym_sec_cache sym_sec; | |
65f38f15 AM |
3323 | }; |
3324 | ||
4c52953f AM |
3325 | /* Rename some of the generic section flags to better document how they |
3326 | are used here. */ | |
3327 | #define has_toc_reloc has_gp_reloc | |
3328 | #define makes_toc_func_call need_finalize_relax | |
3329 | #define call_check_in_progress reloc_done | |
3330 | ||
65f38f15 AM |
3331 | /* Get the ppc64 ELF linker hash table from a link_info structure. */ |
3332 | ||
3333 | #define ppc_hash_table(p) \ | |
3334 | ((struct ppc_link_hash_table *) ((p)->hash)) | |
3335 | ||
721956f4 AM |
3336 | #define ppc_stub_hash_lookup(table, string, create, copy) \ |
3337 | ((struct ppc_stub_hash_entry *) \ | |
3338 | bfd_hash_lookup ((table), (string), (create), (copy))) | |
3339 | ||
3340 | #define ppc_branch_hash_lookup(table, string, create, copy) \ | |
3341 | ((struct ppc_branch_hash_entry *) \ | |
3342 | bfd_hash_lookup ((table), (string), (create), (copy))) | |
3343 | ||
3344 | /* Create an entry in the stub hash table. */ | |
3345 | ||
3346 | static struct bfd_hash_entry * | |
4ce794b7 AM |
3347 | stub_hash_newfunc (struct bfd_hash_entry *entry, |
3348 | struct bfd_hash_table *table, | |
3349 | const char *string) | |
721956f4 AM |
3350 | { |
3351 | /* Allocate the structure if it has not already been allocated by a | |
3352 | subclass. */ | |
3353 | if (entry == NULL) | |
3354 | { | |
3355 | entry = bfd_hash_allocate (table, sizeof (struct ppc_stub_hash_entry)); | |
3356 | if (entry == NULL) | |
3357 | return entry; | |
3358 | } | |
3359 | ||
3360 | /* Call the allocation method of the superclass. */ | |
3361 | entry = bfd_hash_newfunc (entry, table, string); | |
3362 | if (entry != NULL) | |
3363 | { | |
3364 | struct ppc_stub_hash_entry *eh; | |
3365 | ||
3366 | /* Initialize the local fields. */ | |
3367 | eh = (struct ppc_stub_hash_entry *) entry; | |
ad8e1ba5 | 3368 | eh->stub_type = ppc_stub_none; |
721956f4 AM |
3369 | eh->stub_sec = NULL; |
3370 | eh->stub_offset = 0; | |
3371 | eh->target_value = 0; | |
3372 | eh->target_section = NULL; | |
721956f4 AM |
3373 | eh->h = NULL; |
3374 | eh->id_sec = NULL; | |
3375 | } | |
3376 | ||
3377 | return entry; | |
3378 | } | |
3379 | ||
3380 | /* Create an entry in the branch hash table. */ | |
3381 | ||
3382 | static struct bfd_hash_entry * | |
4ce794b7 AM |
3383 | branch_hash_newfunc (struct bfd_hash_entry *entry, |
3384 | struct bfd_hash_table *table, | |
3385 | const char *string) | |
721956f4 AM |
3386 | { |
3387 | /* Allocate the structure if it has not already been allocated by a | |
3388 | subclass. */ | |
3389 | if (entry == NULL) | |
3390 | { | |
3391 | entry = bfd_hash_allocate (table, sizeof (struct ppc_branch_hash_entry)); | |
3392 | if (entry == NULL) | |
3393 | return entry; | |
3394 | } | |
3395 | ||
3396 | /* Call the allocation method of the superclass. */ | |
3397 | entry = bfd_hash_newfunc (entry, table, string); | |
3398 | if (entry != NULL) | |
3399 | { | |
3400 | struct ppc_branch_hash_entry *eh; | |
3401 | ||
3402 | /* Initialize the local fields. */ | |
3403 | eh = (struct ppc_branch_hash_entry *) entry; | |
3404 | eh->offset = 0; | |
3405 | eh->iter = 0; | |
3406 | } | |
3407 | ||
3408 | return entry; | |
3409 | } | |
3410 | ||
65f38f15 AM |
3411 | /* Create an entry in a ppc64 ELF linker hash table. */ |
3412 | ||
3413 | static struct bfd_hash_entry * | |
4ce794b7 AM |
3414 | link_hash_newfunc (struct bfd_hash_entry *entry, |
3415 | struct bfd_hash_table *table, | |
3416 | const char *string) | |
65f38f15 AM |
3417 | { |
3418 | /* Allocate the structure if it has not already been allocated by a | |
3419 | subclass. */ | |
3420 | if (entry == NULL) | |
3421 | { | |
3422 | entry = bfd_hash_allocate (table, sizeof (struct ppc_link_hash_entry)); | |
3423 | if (entry == NULL) | |
3424 | return entry; | |
3425 | } | |
3426 | ||
3427 | /* Call the allocation method of the superclass. */ | |
3428 | entry = _bfd_elf_link_hash_newfunc (entry, table, string); | |
3429 | if (entry != NULL) | |
3430 | { | |
3431 | struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) entry; | |
3432 | ||
721956f4 | 3433 | eh->stub_cache = NULL; |
65f38f15 | 3434 | eh->dyn_relocs = NULL; |
721956f4 | 3435 | eh->oh = NULL; |
e86ce104 AM |
3436 | eh->is_func = 0; |
3437 | eh->is_func_descriptor = 0; | |
754021d0 | 3438 | eh->adjust_done = 0; |
99877b66 | 3439 | eh->was_undefined = 0; |
e7b938ca | 3440 | eh->tls_mask = 0; |
65f38f15 AM |
3441 | } |
3442 | ||
3443 | return entry; | |
3444 | } | |
3445 | ||
3446 | /* Create a ppc64 ELF linker hash table. */ | |
3447 | ||
3448 | static struct bfd_link_hash_table * | |
4ce794b7 | 3449 | ppc64_elf_link_hash_table_create (bfd *abfd) |
65f38f15 AM |
3450 | { |
3451 | struct ppc_link_hash_table *htab; | |
3452 | bfd_size_type amt = sizeof (struct ppc_link_hash_table); | |
3453 | ||
4ce794b7 | 3454 | htab = bfd_zmalloc (amt); |
65f38f15 AM |
3455 | if (htab == NULL) |
3456 | return NULL; | |
3457 | ||
3458 | if (! _bfd_elf_link_hash_table_init (&htab->elf, abfd, link_hash_newfunc)) | |
3459 | { | |
e2d34d7d | 3460 | free (htab); |
65f38f15 AM |
3461 | return NULL; |
3462 | } | |
3463 | ||
721956f4 AM |
3464 | /* Init the stub hash table too. */ |
3465 | if (!bfd_hash_table_init (&htab->stub_hash_table, stub_hash_newfunc)) | |
3466 | return NULL; | |
3467 | ||
3468 | /* And the branch hash table. */ | |
3469 | if (!bfd_hash_table_init (&htab->branch_hash_table, branch_hash_newfunc)) | |
3470 | return NULL; | |
3471 | ||
3254fd24 AM |
3472 | /* Initializing two fields of the union is just cosmetic. We really |
3473 | only care about glist, but when compiled on a 32-bit host the | |
3474 | bfd_vma fields are larger. Setting the bfd_vma to zero makes | |
3475 | debugger inspection of these fields look nicer. */ | |
3476 | htab->elf.init_refcount.refcount = 0; | |
3477 | htab->elf.init_refcount.glist = NULL; | |
3478 | htab->elf.init_offset.offset = 0; | |
3479 | htab->elf.init_offset.glist = NULL; | |
3480 | ||
65f38f15 AM |
3481 | return &htab->elf.root; |
3482 | } | |
3483 | ||
721956f4 AM |
3484 | /* Free the derived linker hash table. */ |
3485 | ||
3486 | static void | |
4ce794b7 | 3487 | ppc64_elf_link_hash_table_free (struct bfd_link_hash_table *hash) |
721956f4 AM |
3488 | { |
3489 | struct ppc_link_hash_table *ret = (struct ppc_link_hash_table *) hash; | |
3490 | ||
3491 | bfd_hash_table_free (&ret->stub_hash_table); | |
3492 | bfd_hash_table_free (&ret->branch_hash_table); | |
3493 | _bfd_generic_link_hash_table_free (hash); | |
3494 | } | |
3495 | ||
e717da7e AM |
3496 | /* Satisfy the ELF linker by filling in some fields in our fake bfd. */ |
3497 | ||
3498 | void | |
3499 | ppc64_elf_init_stub_bfd (bfd *abfd, struct bfd_link_info *info) | |
3500 | { | |
3501 | struct ppc_link_hash_table *htab; | |
3502 | ||
3503 | elf_elfheader (abfd)->e_ident[EI_CLASS] = ELFCLASS64; | |
3504 | ||
3505 | /* Always hook our dynamic sections into the first bfd, which is the | |
3506 | linker created stub bfd. This ensures that the GOT header is at | |
3507 | the start of the output TOC section. */ | |
3508 | htab = ppc_hash_table (info); | |
3509 | htab->stub_bfd = abfd; | |
3510 | htab->elf.dynobj = abfd; | |
3511 | } | |
3512 | ||
721956f4 AM |
3513 | /* Build a name for an entry in the stub hash table. */ |
3514 | ||
3515 | static char * | |
4ce794b7 AM |
3516 | ppc_stub_name (const asection *input_section, |
3517 | const asection *sym_sec, | |
3518 | const struct ppc_link_hash_entry *h, | |
3519 | const Elf_Internal_Rela *rel) | |
721956f4 AM |
3520 | { |
3521 | char *stub_name; | |
3522 | bfd_size_type len; | |
3523 | ||
3524 | /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31 | |
3525 | offsets from a sym as a branch target? In fact, we could | |
3526 | probably assume the addend is always zero. */ | |
3527 | BFD_ASSERT (((int) rel->r_addend & 0xffffffff) == rel->r_addend); | |
3528 | ||
3529 | if (h) | |
3530 | { | |
3531 | len = 8 + 1 + strlen (h->elf.root.root.string) + 1 + 8 + 1; | |
3532 | stub_name = bfd_malloc (len); | |
3533 | if (stub_name != NULL) | |
3534 | { | |
97b639ba | 3535 | sprintf (stub_name, "%08x.%s+%x", |
721956f4 AM |
3536 | input_section->id & 0xffffffff, |
3537 | h->elf.root.root.string, | |
3538 | (int) rel->r_addend & 0xffffffff); | |
3539 | } | |
3540 | } | |
3541 | else | |
3542 | { | |
ad8e1ba5 | 3543 | len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1; |
721956f4 AM |
3544 | stub_name = bfd_malloc (len); |
3545 | if (stub_name != NULL) | |
3546 | { | |
97b639ba | 3547 | sprintf (stub_name, "%08x.%x:%x+%x", |
721956f4 AM |
3548 | input_section->id & 0xffffffff, |
3549 | sym_sec->id & 0xffffffff, | |
3550 | (int) ELF64_R_SYM (rel->r_info) & 0xffffffff, | |
3551 | (int) rel->r_addend & 0xffffffff); | |
3552 | } | |
3553 | } | |
ee75fd95 AM |
3554 | if (stub_name[len - 2] == '+' && stub_name[len - 1] == '0') |
3555 | stub_name[len - 2] = 0; | |
721956f4 AM |
3556 | return stub_name; |
3557 | } | |
3558 | ||
3559 | /* Look up an entry in the stub hash. Stub entries are cached because | |
3560 | creating the stub name takes a bit of time. */ | |
3561 | ||
3562 | static struct ppc_stub_hash_entry * | |
4ce794b7 AM |
3563 | ppc_get_stub_entry (const asection *input_section, |
3564 | const asection *sym_sec, | |
039b3fef | 3565 | struct ppc_link_hash_entry *h, |
4ce794b7 AM |
3566 | const Elf_Internal_Rela *rel, |
3567 | struct ppc_link_hash_table *htab) | |
721956f4 AM |
3568 | { |
3569 | struct ppc_stub_hash_entry *stub_entry; | |
721956f4 AM |
3570 | const asection *id_sec; |
3571 | ||
3572 | /* If this input section is part of a group of sections sharing one | |
3573 | stub section, then use the id of the first section in the group. | |
3574 | Stub names need to include a section id, as there may well be | |
3575 | more than one stub used to reach say, printf, and we need to | |
3576 | distinguish between them. */ | |
3577 | id_sec = htab->stub_group[input_section->id].link_sec; | |
3578 | ||
3579 | if (h != NULL && h->stub_cache != NULL | |
3580 | && h->stub_cache->h == h | |
3581 | && h->stub_cache->id_sec == id_sec) | |
3582 | { | |
3583 | stub_entry = h->stub_cache; | |
3584 | } | |
3585 | else | |
3586 | { | |
3587 | char *stub_name; | |
3588 | ||
3589 | stub_name = ppc_stub_name (id_sec, sym_sec, h, rel); | |
3590 | if (stub_name == NULL) | |
3591 | return NULL; | |
3592 | ||
3593 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, | |
b34976b6 | 3594 | stub_name, FALSE, FALSE); |
721956f4 AM |
3595 | if (h != NULL) |
3596 | h->stub_cache = stub_entry; | |
3597 | ||
3598 | free (stub_name); | |
3599 | } | |
3600 | ||
3601 | return stub_entry; | |
3602 | } | |
3603 | ||
3604 | /* Add a new stub entry to the stub hash. Not all fields of the new | |
3605 | stub entry are initialised. */ | |
3606 | ||
3607 | static struct ppc_stub_hash_entry * | |
4ce794b7 AM |
3608 | ppc_add_stub (const char *stub_name, |
3609 | asection *section, | |
3610 | struct ppc_link_hash_table *htab) | |
721956f4 AM |
3611 | { |
3612 | asection *link_sec; | |
3613 | asection *stub_sec; | |
3614 | struct ppc_stub_hash_entry *stub_entry; | |
3615 | ||
3616 | link_sec = htab->stub_group[section->id].link_sec; | |
3617 | stub_sec = htab->stub_group[section->id].stub_sec; | |
3618 | if (stub_sec == NULL) | |
3619 | { | |
3620 | stub_sec = htab->stub_group[link_sec->id].stub_sec; | |
3621 | if (stub_sec == NULL) | |
3622 | { | |
d4c88bbb | 3623 | size_t namelen; |
721956f4 AM |
3624 | bfd_size_type len; |
3625 | char *s_name; | |
3626 | ||
d4c88bbb AM |
3627 | namelen = strlen (link_sec->name); |
3628 | len = namelen + sizeof (STUB_SUFFIX); | |
721956f4 AM |
3629 | s_name = bfd_alloc (htab->stub_bfd, len); |
3630 | if (s_name == NULL) | |
3631 | return NULL; | |
3632 | ||
d4c88bbb AM |
3633 | memcpy (s_name, link_sec->name, namelen); |
3634 | memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX)); | |
721956f4 AM |
3635 | stub_sec = (*htab->add_stub_section) (s_name, link_sec); |
3636 | if (stub_sec == NULL) | |
3637 | return NULL; | |
3638 | htab->stub_group[link_sec->id].stub_sec = stub_sec; | |
3639 | } | |
3640 | htab->stub_group[section->id].stub_sec = stub_sec; | |
3641 | } | |
3642 | ||
3643 | /* Enter this entry into the linker stub hash table. */ | |
3644 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, stub_name, | |
b34976b6 | 3645 | TRUE, FALSE); |
721956f4 AM |
3646 | if (stub_entry == NULL) |
3647 | { | |
d003868e AM |
3648 | (*_bfd_error_handler) (_("%B: cannot create stub entry %s"), |
3649 | section->owner, stub_name); | |
721956f4 AM |
3650 | return NULL; |
3651 | } | |
3652 | ||
3653 | stub_entry->stub_sec = stub_sec; | |
3654 | stub_entry->stub_offset = 0; | |
3655 | stub_entry->id_sec = link_sec; | |
3656 | return stub_entry; | |
3657 | } | |
3658 | ||
82bd7b59 AM |
3659 | /* Create sections for linker generated code. */ |
3660 | ||
b34976b6 | 3661 | static bfd_boolean |
4ce794b7 | 3662 | create_linkage_sections (bfd *dynobj, struct bfd_link_info *info) |
82bd7b59 AM |
3663 | { |
3664 | struct ppc_link_hash_table *htab; | |
3665 | flagword flags; | |
3666 | ||
3667 | htab = ppc_hash_table (info); | |
3668 | ||
3669 | /* Create .sfpr for code to save and restore fp regs. */ | |
3670 | flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY | |
3671 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
721956f4 | 3672 | htab->sfpr = bfd_make_section_anyway (dynobj, ".sfpr"); |
82bd7b59 AM |
3673 | if (htab->sfpr == NULL |
3674 | || ! bfd_set_section_flags (dynobj, htab->sfpr, flags) | |
3675 | || ! bfd_set_section_alignment (dynobj, htab->sfpr, 2)) | |
b34976b6 | 3676 | return FALSE; |
82bd7b59 | 3677 | |
721956f4 | 3678 | /* Create .glink for lazy dynamic linking support. */ |
4ce794b7 AM |
3679 | htab->glink = bfd_make_section_anyway (dynobj, ".glink"); |
3680 | if (htab->glink == NULL | |
3681 | || ! bfd_set_section_flags (dynobj, htab->glink, flags) | |
3682 | || ! bfd_set_section_alignment (dynobj, htab->glink, 2)) | |
b34976b6 | 3683 | return FALSE; |
82bd7b59 | 3684 | |
721956f4 AM |
3685 | /* Create .branch_lt for plt_branch stubs. */ |
3686 | flags = (SEC_ALLOC | SEC_LOAD | |
3687 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
4ce794b7 AM |
3688 | htab->brlt = bfd_make_section_anyway (dynobj, ".branch_lt"); |
3689 | if (htab->brlt == NULL | |
3690 | || ! bfd_set_section_flags (dynobj, htab->brlt, flags) | |
3691 | || ! bfd_set_section_alignment (dynobj, htab->brlt, 3)) | |
b34976b6 | 3692 | return FALSE; |
721956f4 | 3693 | |
ee75fd95 | 3694 | if (info->shared || info->emitrelocations) |
721956f4 AM |
3695 | { |
3696 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | |
3697 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
4ce794b7 AM |
3698 | htab->relbrlt = bfd_make_section_anyway (dynobj, ".rela.branch_lt"); |
3699 | if (!htab->relbrlt | |
3700 | || ! bfd_set_section_flags (dynobj, htab->relbrlt, flags) | |
3701 | || ! bfd_set_section_alignment (dynobj, htab->relbrlt, 3)) | |
b34976b6 | 3702 | return FALSE; |
721956f4 | 3703 | } |
b34976b6 | 3704 | return TRUE; |
82bd7b59 AM |
3705 | } |
3706 | ||
e717da7e AM |
3707 | /* Create .got and .rela.got sections in ABFD, and .got in dynobj if |
3708 | not already done. */ | |
65f38f15 | 3709 | |
b34976b6 | 3710 | static bfd_boolean |
e717da7e | 3711 | create_got_section (bfd *abfd, struct bfd_link_info *info) |
65f38f15 | 3712 | { |
e717da7e AM |
3713 | asection *got, *relgot; |
3714 | flagword flags; | |
3715 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
65f38f15 | 3716 | |
4ce794b7 | 3717 | if (!htab->got) |
e717da7e AM |
3718 | { |
3719 | if (! _bfd_elf_create_got_section (htab->elf.dynobj, info)) | |
3720 | return FALSE; | |
3721 | ||
3722 | htab->got = bfd_get_section_by_name (htab->elf.dynobj, ".got"); | |
3723 | if (!htab->got) | |
3724 | abort (); | |
3725 | } | |
3726 | ||
3727 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY | |
3728 | | SEC_LINKER_CREATED); | |
3729 | ||
3730 | got = bfd_make_section (abfd, ".got"); | |
3731 | if (!got | |
3732 | || !bfd_set_section_flags (abfd, got, flags) | |
3733 | || !bfd_set_section_alignment (abfd, got, 3)) | |
3734 | return FALSE; | |
65f38f15 | 3735 | |
e717da7e AM |
3736 | relgot = bfd_make_section (abfd, ".rela.got"); |
3737 | if (!relgot | |
3738 | || ! bfd_set_section_flags (abfd, relgot, flags | SEC_READONLY) | |
3739 | || ! bfd_set_section_alignment (abfd, relgot, 3)) | |
b34976b6 | 3740 | return FALSE; |
e717da7e AM |
3741 | |
3742 | ppc64_elf_tdata (abfd)->got = got; | |
3743 | ppc64_elf_tdata (abfd)->relgot = relgot; | |
b34976b6 | 3744 | return TRUE; |
65f38f15 | 3745 | } |
5bd4f169 | 3746 | |
82bd7b59 | 3747 | /* Create the dynamic sections, and set up shortcuts. */ |
5bd4f169 | 3748 | |
b34976b6 | 3749 | static bfd_boolean |
4ce794b7 | 3750 | ppc64_elf_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info) |
5bd4f169 | 3751 | { |
65f38f15 | 3752 | struct ppc_link_hash_table *htab; |
5bd4f169 | 3753 | |
65f38f15 | 3754 | if (!_bfd_elf_create_dynamic_sections (dynobj, info)) |
b34976b6 | 3755 | return FALSE; |
65f38f15 | 3756 | |
e717da7e AM |
3757 | htab = ppc_hash_table (info); |
3758 | if (!htab->got) | |
3759 | htab->got = bfd_get_section_by_name (dynobj, ".got"); | |
4ce794b7 AM |
3760 | htab->plt = bfd_get_section_by_name (dynobj, ".plt"); |
3761 | htab->relplt = bfd_get_section_by_name (dynobj, ".rela.plt"); | |
3762 | htab->dynbss = bfd_get_section_by_name (dynobj, ".dynbss"); | |
65f38f15 | 3763 | if (!info->shared) |
4ce794b7 | 3764 | htab->relbss = bfd_get_section_by_name (dynobj, ".rela.bss"); |
65f38f15 | 3765 | |
e717da7e | 3766 | if (!htab->got || !htab->plt || !htab->relplt || !htab->dynbss |
4ce794b7 | 3767 | || (!info->shared && !htab->relbss)) |
65f38f15 AM |
3768 | abort (); |
3769 | ||
b34976b6 | 3770 | return TRUE; |
5bd4f169 AM |
3771 | } |
3772 | ||
65f38f15 AM |
3773 | /* Copy the extra info we tack onto an elf_link_hash_entry. */ |
3774 | ||
3775 | static void | |
9c5bfbb7 AM |
3776 | ppc64_elf_copy_indirect_symbol |
3777 | (const struct elf_backend_data *bed ATTRIBUTE_UNUSED, | |
3778 | struct elf_link_hash_entry *dir, | |
3779 | struct elf_link_hash_entry *ind) | |
65f38f15 AM |
3780 | { |
3781 | struct ppc_link_hash_entry *edir, *eind; | |
3782 | ||
3783 | edir = (struct ppc_link_hash_entry *) dir; | |
3784 | eind = (struct ppc_link_hash_entry *) ind; | |
3785 | ||
411e1bfb | 3786 | /* Copy over any dynamic relocs we may have on the indirect sym. */ |
bbd7ec4a | 3787 | if (eind->dyn_relocs != NULL) |
65f38f15 | 3788 | { |
bbd7ec4a AM |
3789 | if (edir->dyn_relocs != NULL) |
3790 | { | |
3791 | struct ppc_dyn_relocs **pp; | |
3792 | struct ppc_dyn_relocs *p; | |
3793 | ||
411e1bfb | 3794 | if (eind->elf.root.type == bfd_link_hash_indirect) |
bbd7ec4a AM |
3795 | abort (); |
3796 | ||
3797 | /* Add reloc counts against the weak sym to the strong sym | |
3798 | list. Merge any entries against the same section. */ | |
3799 | for (pp = &eind->dyn_relocs; (p = *pp) != NULL; ) | |
3800 | { | |
3801 | struct ppc_dyn_relocs *q; | |
3802 | ||
3803 | for (q = edir->dyn_relocs; q != NULL; q = q->next) | |
3804 | if (q->sec == p->sec) | |
3805 | { | |
3806 | q->pc_count += p->pc_count; | |
3807 | q->count += p->count; | |
3808 | *pp = p->next; | |
3809 | break; | |
3810 | } | |
3811 | if (q == NULL) | |
3812 | pp = &p->next; | |
3813 | } | |
3814 | *pp = edir->dyn_relocs; | |
3815 | } | |
3816 | ||
65f38f15 AM |
3817 | edir->dyn_relocs = eind->dyn_relocs; |
3818 | eind->dyn_relocs = NULL; | |
3819 | } | |
65f38f15 | 3820 | |
6349e628 AM |
3821 | edir->is_func |= eind->is_func; |
3822 | edir->is_func_descriptor |= eind->is_func_descriptor; | |
58ac9f71 | 3823 | edir->tls_mask |= eind->tls_mask; |
6349e628 | 3824 | |
81848ca0 | 3825 | /* If called to transfer flags for a weakdef during processing |
f5385ebf | 3826 | of elf_adjust_dynamic_symbol, don't copy NON_GOT_REF. |
81848ca0 | 3827 | We clear it ourselves for ELIMINATE_COPY_RELOCS. */ |
f5385ebf AM |
3828 | if (!(ELIMINATE_COPY_RELOCS |
3829 | && eind->elf.root.type != bfd_link_hash_indirect | |
3830 | && edir->elf.dynamic_adjusted)) | |
3831 | edir->elf.non_got_ref |= eind->elf.non_got_ref; | |
81848ca0 | 3832 | |
f5385ebf AM |
3833 | edir->elf.ref_dynamic |= eind->elf.ref_dynamic; |
3834 | edir->elf.ref_regular |= eind->elf.ref_regular; | |
3835 | edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak; | |
3836 | edir->elf.needs_plt |= eind->elf.needs_plt; | |
6349e628 AM |
3837 | |
3838 | /* If we were called to copy over info for a weak sym, that's all. */ | |
3839 | if (eind->elf.root.type != bfd_link_hash_indirect) | |
3840 | return; | |
3841 | ||
81848ca0 AM |
3842 | /* Copy over got entries that we may have already seen to the |
3843 | symbol which just became indirect. */ | |
411e1bfb AM |
3844 | if (eind->elf.got.glist != NULL) |
3845 | { | |
3846 | if (edir->elf.got.glist != NULL) | |
3847 | { | |
3848 | struct got_entry **entp; | |
3849 | struct got_entry *ent; | |
3850 | ||
3851 | for (entp = &eind->elf.got.glist; (ent = *entp) != NULL; ) | |
3852 | { | |
3853 | struct got_entry *dent; | |
3854 | ||
3855 | for (dent = edir->elf.got.glist; dent != NULL; dent = dent->next) | |
3856 | if (dent->addend == ent->addend | |
e717da7e | 3857 | && dent->owner == ent->owner |
411e1bfb AM |
3858 | && dent->tls_type == ent->tls_type) |
3859 | { | |
3860 | dent->got.refcount += ent->got.refcount; | |
3861 | *entp = ent->next; | |
3862 | break; | |
3863 | } | |
3864 | if (dent == NULL) | |
3865 | entp = &ent->next; | |
3866 | } | |
3867 | *entp = edir->elf.got.glist; | |
3868 | } | |
3869 | ||
3870 | edir->elf.got.glist = eind->elf.got.glist; | |
3871 | eind->elf.got.glist = NULL; | |
3872 | } | |
3873 | ||
3874 | /* And plt entries. */ | |
3875 | if (eind->elf.plt.plist != NULL) | |
3876 | { | |
3877 | if (edir->elf.plt.plist != NULL) | |
3878 | { | |
3879 | struct plt_entry **entp; | |
3880 | struct plt_entry *ent; | |
3881 | ||
3882 | for (entp = &eind->elf.plt.plist; (ent = *entp) != NULL; ) | |
3883 | { | |
3884 | struct plt_entry *dent; | |
3885 | ||
3886 | for (dent = edir->elf.plt.plist; dent != NULL; dent = dent->next) | |
3887 | if (dent->addend == ent->addend) | |
3888 | { | |
3889 | dent->plt.refcount += ent->plt.refcount; | |
3890 | *entp = ent->next; | |
3891 | break; | |
3892 | } | |
3893 | if (dent == NULL) | |
3894 | entp = &ent->next; | |
3895 | } | |
3896 | *entp = edir->elf.plt.plist; | |
3897 | } | |
3898 | ||
3899 | edir->elf.plt.plist = eind->elf.plt.plist; | |
3900 | eind->elf.plt.plist = NULL; | |
3901 | } | |
3902 | ||
411e1bfb AM |
3903 | if (edir->elf.dynindx == -1) |
3904 | { | |
3905 | edir->elf.dynindx = eind->elf.dynindx; | |
3906 | edir->elf.dynstr_index = eind->elf.dynstr_index; | |
3907 | eind->elf.dynindx = -1; | |
3908 | eind->elf.dynstr_index = 0; | |
3909 | } | |
3910 | else | |
3911 | BFD_ASSERT (eind->elf.dynindx == -1); | |
3912 | } | |
3913 | ||
8387904d AM |
3914 | /* Find the function descriptor hash entry from the given function code |
3915 | hash entry FH. Link the entries via their OH fields. */ | |
3916 | ||
3917 | static struct ppc_link_hash_entry * | |
3918 | get_fdh (struct ppc_link_hash_entry *fh, struct ppc_link_hash_table *htab) | |
3919 | { | |
3920 | struct ppc_link_hash_entry *fdh = fh->oh; | |
3921 | ||
3922 | if (fdh == NULL) | |
3923 | { | |
3924 | const char *fd_name = fh->elf.root.root.string + 1; | |
3925 | ||
3926 | fdh = (struct ppc_link_hash_entry *) | |
3927 | elf_link_hash_lookup (&htab->elf, fd_name, FALSE, FALSE, FALSE); | |
3928 | if (fdh != NULL) | |
3929 | { | |
3930 | fdh->is_func_descriptor = 1; | |
3931 | fdh->oh = fh; | |
3932 | fh->is_func = 1; | |
3933 | fh->oh = fdh; | |
3934 | } | |
3935 | } | |
3936 | ||
3937 | return fdh; | |
3938 | } | |
3939 | ||
bb700d78 AM |
3940 | /* Make a fake function descriptor sym for the code sym FH. */ |
3941 | ||
3942 | static struct ppc_link_hash_entry * | |
3943 | make_fdh (struct bfd_link_info *info, | |
3944 | struct ppc_link_hash_entry *fh, | |
3945 | flagword flags) | |
3946 | { | |
3947 | bfd *abfd; | |
3948 | asymbol *newsym; | |
3949 | struct bfd_link_hash_entry *bh; | |
3950 | struct ppc_link_hash_entry *fdh; | |
3951 | ||
3952 | abfd = fh->elf.root.u.undef.abfd; | |
3953 | newsym = bfd_make_empty_symbol (abfd); | |
3954 | newsym->name = fh->elf.root.root.string + 1; | |
3955 | newsym->section = bfd_und_section_ptr; | |
3956 | newsym->value = 0; | |
3957 | newsym->flags = flags; | |
3958 | ||
3959 | bh = NULL; | |
3960 | if (!_bfd_generic_link_add_one_symbol (info, abfd, newsym->name, | |
3961 | newsym->flags, newsym->section, | |
3962 | newsym->value, NULL, FALSE, FALSE, | |
3963 | &bh)) | |
3964 | return NULL; | |
3965 | ||
3966 | fdh = (struct ppc_link_hash_entry *) bh; | |
3967 | fdh->elf.non_elf = 0; | |
3968 | return fdh; | |
3969 | } | |
3970 | ||
8387904d AM |
3971 | /* Hacks to support old ABI code. |
3972 | When making function calls, old ABI code references function entry | |
3973 | points (dot symbols), while new ABI code references the function | |
3974 | descriptor symbol. We need to make any combination of reference and | |
3975 | definition work together, without breaking archive linking. | |
3976 | ||
3977 | For a defined function "foo" and an undefined call to "bar": | |
3978 | An old object defines "foo" and ".foo", references ".bar" (possibly | |
3979 | "bar" too). | |
3980 | A new object defines "foo" and references "bar". | |
3981 | ||
3982 | A new object thus has no problem with its undefined symbols being | |
3983 | satisfied by definitions in an old object. On the other hand, the | |
3984 | old object won't have ".bar" satisfied by a new object. */ | |
3985 | ||
3986 | /* Fix function descriptor symbols defined in .opd sections to be | |
3987 | function type. */ | |
555cd476 AM |
3988 | |
3989 | static bfd_boolean | |
3990 | ppc64_elf_add_symbol_hook (bfd *ibfd ATTRIBUTE_UNUSED, | |
3991 | struct bfd_link_info *info ATTRIBUTE_UNUSED, | |
3992 | Elf_Internal_Sym *isym, | |
3993 | const char **name ATTRIBUTE_UNUSED, | |
3994 | flagword *flags ATTRIBUTE_UNUSED, | |
3995 | asection **sec, | |
3996 | bfd_vma *value ATTRIBUTE_UNUSED) | |
3997 | { | |
8843416a AM |
3998 | if (*sec != NULL |
3999 | && strcmp (bfd_get_section_name (ibfd, *sec), ".opd") == 0) | |
555cd476 AM |
4000 | isym->st_info = ELF_ST_INFO (ELF_ST_BIND (isym->st_info), STT_FUNC); |
4001 | return TRUE; | |
4002 | } | |
4003 | ||
8387904d AM |
4004 | /* This function makes an old ABI object reference to ".bar" cause the |
4005 | inclusion of a new ABI object archive that defines "bar". */ | |
4006 | ||
4007 | static struct elf_link_hash_entry * | |
4008 | ppc64_elf_archive_symbol_lookup (bfd *abfd, | |
4009 | struct bfd_link_info *info, | |
4010 | const char *name) | |
4011 | { | |
4012 | struct elf_link_hash_entry *h; | |
4013 | char *dot_name; | |
4014 | size_t len; | |
4015 | ||
4016 | h = _bfd_elf_archive_symbol_lookup (abfd, info, name); | |
4017 | if (h != NULL) | |
4018 | return h; | |
4019 | ||
4020 | if (name[0] == '.') | |
4021 | return h; | |
4022 | ||
4023 | len = strlen (name); | |
4024 | dot_name = bfd_alloc (abfd, len + 2); | |
4025 | if (dot_name == NULL) | |
4026 | return (struct elf_link_hash_entry *) 0 - 1; | |
4027 | dot_name[0] = '.'; | |
4028 | memcpy (dot_name + 1, name, len + 1); | |
4029 | h = _bfd_elf_archive_symbol_lookup (abfd, info, dot_name); | |
4030 | bfd_release (abfd, dot_name); | |
4031 | return h; | |
4032 | } | |
4033 | ||
4034 | /* This function satisfies all old ABI object references to ".bar" if a | |
99877b66 AM |
4035 | new ABI object defines "bar". Well, at least, undefined dot symbols |
4036 | are made weak. This stops later archive searches from including an | |
4037 | object if we already have a function descriptor definition. It also | |
35b0ce59 AM |
4038 | prevents the linker complaining about undefined symbols. |
4039 | We also check and correct mismatched symbol visibility here. The | |
4040 | most restrictive visibility of the function descriptor and the | |
4041 | function entry symbol is used. */ | |
8387904d | 4042 | |
bb700d78 AM |
4043 | struct add_symbol_adjust_data |
4044 | { | |
4045 | struct bfd_link_info *info; | |
4046 | bfd_boolean ok; | |
4047 | }; | |
4048 | ||
8387904d AM |
4049 | static bfd_boolean |
4050 | add_symbol_adjust (struct elf_link_hash_entry *h, void *inf) | |
4051 | { | |
bb700d78 | 4052 | struct add_symbol_adjust_data *data; |
8387904d | 4053 | struct ppc_link_hash_table *htab; |
99877b66 | 4054 | struct ppc_link_hash_entry *eh; |
8387904d AM |
4055 | struct ppc_link_hash_entry *fdh; |
4056 | ||
4057 | if (h->root.type == bfd_link_hash_indirect) | |
4058 | return TRUE; | |
4059 | ||
4060 | if (h->root.type == bfd_link_hash_warning) | |
4061 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
4062 | ||
35b0ce59 | 4063 | if (h->root.root.string[0] != '.') |
8387904d AM |
4064 | return TRUE; |
4065 | ||
bb700d78 AM |
4066 | data = inf; |
4067 | htab = ppc_hash_table (data->info); | |
99877b66 AM |
4068 | eh = (struct ppc_link_hash_entry *) h; |
4069 | fdh = get_fdh (eh, htab); | |
bb700d78 AM |
4070 | if (fdh == NULL |
4071 | && (eh->elf.root.type == bfd_link_hash_undefined | |
4072 | || eh->elf.root.type == bfd_link_hash_undefweak) | |
4073 | && eh->elf.ref_regular) | |
4074 | { | |
4075 | /* Make an undefweak function descriptor sym, which is enough to | |
4076 | pull in an --as-needed shared lib, but won't cause link | |
4077 | errors. Archives are handled elsewhere. */ | |
4078 | fdh = make_fdh (data->info, eh, BSF_WEAK); | |
4079 | if (fdh == NULL) | |
4080 | data->ok = FALSE; | |
4081 | else | |
4082 | fdh->elf.ref_regular = 1; | |
4083 | } | |
4084 | else if (fdh != NULL) | |
8387904d | 4085 | { |
35b0ce59 AM |
4086 | unsigned entry_vis = ELF_ST_VISIBILITY (eh->elf.other) - 1; |
4087 | unsigned descr_vis = ELF_ST_VISIBILITY (fdh->elf.other) - 1; | |
4088 | if (entry_vis < descr_vis) | |
4089 | fdh->elf.other += entry_vis - descr_vis; | |
4090 | else if (entry_vis > descr_vis) | |
4091 | eh->elf.other += descr_vis - entry_vis; | |
4092 | ||
bb700d78 AM |
4093 | if (eh->elf.root.type == bfd_link_hash_undefined |
4094 | && (fdh->elf.root.type == bfd_link_hash_defined | |
4095 | || fdh->elf.root.type == bfd_link_hash_defweak)) | |
35b0ce59 AM |
4096 | { |
4097 | eh->elf.root.type = bfd_link_hash_undefweak; | |
4098 | eh->was_undefined = 1; | |
4099 | htab->twiddled_syms = 1; | |
4100 | } | |
8387904d | 4101 | } |
99877b66 | 4102 | |
8387904d AM |
4103 | return TRUE; |
4104 | } | |
4105 | ||
4106 | static bfd_boolean | |
4107 | ppc64_elf_check_directives (bfd *abfd ATTRIBUTE_UNUSED, | |
4108 | struct bfd_link_info *info) | |
4109 | { | |
99877b66 | 4110 | struct ppc_link_hash_table *htab; |
bb700d78 | 4111 | struct add_symbol_adjust_data data; |
99877b66 AM |
4112 | |
4113 | htab = ppc_hash_table (info); | |
ee75fd95 | 4114 | if (!is_ppc64_elf_target (htab->elf.root.creator)) |
35b0ce59 AM |
4115 | return TRUE; |
4116 | ||
bb700d78 AM |
4117 | data.info = info; |
4118 | data.ok = TRUE; | |
4119 | elf_link_hash_traverse (&htab->elf, add_symbol_adjust, &data); | |
99877b66 AM |
4120 | |
4121 | /* We need to fix the undefs list for any syms we have twiddled to | |
4122 | undef_weak. */ | |
4123 | if (htab->twiddled_syms) | |
4124 | { | |
77cfaee6 | 4125 | bfd_link_repair_undef_list (&htab->elf.root); |
99877b66 AM |
4126 | htab->twiddled_syms = 0; |
4127 | } | |
bb700d78 | 4128 | return data.ok; |
8387904d AM |
4129 | } |
4130 | ||
411e1bfb | 4131 | static bfd_boolean |
4ce794b7 AM |
4132 | update_local_sym_info (bfd *abfd, Elf_Internal_Shdr *symtab_hdr, |
4133 | unsigned long r_symndx, bfd_vma r_addend, int tls_type) | |
411e1bfb AM |
4134 | { |
4135 | struct got_entry **local_got_ents = elf_local_got_ents (abfd); | |
e7b938ca | 4136 | char *local_got_tls_masks; |
411e1bfb AM |
4137 | |
4138 | if (local_got_ents == NULL) | |
4139 | { | |
4140 | bfd_size_type size = symtab_hdr->sh_info; | |
4141 | ||
e7b938ca | 4142 | size *= sizeof (*local_got_ents) + sizeof (*local_got_tls_masks); |
4ce794b7 | 4143 | local_got_ents = bfd_zalloc (abfd, size); |
411e1bfb AM |
4144 | if (local_got_ents == NULL) |
4145 | return FALSE; | |
4146 | elf_local_got_ents (abfd) = local_got_ents; | |
4147 | } | |
4148 | ||
4149 | if ((tls_type & TLS_EXPLICIT) == 0) | |
4150 | { | |
4151 | struct got_entry *ent; | |
4152 | ||
4153 | for (ent = local_got_ents[r_symndx]; ent != NULL; ent = ent->next) | |
e717da7e AM |
4154 | if (ent->addend == r_addend |
4155 | && ent->owner == abfd | |
4156 | && ent->tls_type == tls_type) | |
411e1bfb AM |
4157 | break; |
4158 | if (ent == NULL) | |
4159 | { | |
4160 | bfd_size_type amt = sizeof (*ent); | |
4ce794b7 | 4161 | ent = bfd_alloc (abfd, amt); |
411e1bfb AM |
4162 | if (ent == NULL) |
4163 | return FALSE; | |
4164 | ent->next = local_got_ents[r_symndx]; | |
4165 | ent->addend = r_addend; | |
e717da7e | 4166 | ent->owner = abfd; |
411e1bfb AM |
4167 | ent->tls_type = tls_type; |
4168 | ent->got.refcount = 0; | |
4169 | local_got_ents[r_symndx] = ent; | |
4170 | } | |
4171 | ent->got.refcount += 1; | |
4172 | } | |
4173 | ||
e7b938ca AM |
4174 | local_got_tls_masks = (char *) (local_got_ents + symtab_hdr->sh_info); |
4175 | local_got_tls_masks[r_symndx] |= tls_type; | |
411e1bfb | 4176 | return TRUE; |
65f38f15 AM |
4177 | } |
4178 | ||
411e1bfb | 4179 | static bfd_boolean |
4ce794b7 | 4180 | update_plt_info (bfd *abfd, struct ppc_link_hash_entry *eh, bfd_vma addend) |
1e2f5b6e | 4181 | { |
411e1bfb | 4182 | struct plt_entry *ent; |
1e2f5b6e | 4183 | |
411e1bfb AM |
4184 | for (ent = eh->elf.plt.plist; ent != NULL; ent = ent->next) |
4185 | if (ent->addend == addend) | |
4186 | break; | |
4187 | if (ent == NULL) | |
1e2f5b6e | 4188 | { |
411e1bfb | 4189 | bfd_size_type amt = sizeof (*ent); |
4ce794b7 | 4190 | ent = bfd_alloc (abfd, amt); |
411e1bfb AM |
4191 | if (ent == NULL) |
4192 | return FALSE; | |
4193 | ent->next = eh->elf.plt.plist; | |
4194 | ent->addend = addend; | |
4195 | ent->plt.refcount = 0; | |
4196 | eh->elf.plt.plist = ent; | |
1e2f5b6e | 4197 | } |
411e1bfb | 4198 | ent->plt.refcount += 1; |
f5385ebf | 4199 | eh->elf.needs_plt = 1; |
411e1bfb | 4200 | eh->is_func = 1; |
b34976b6 | 4201 | return TRUE; |
1e2f5b6e AM |
4202 | } |
4203 | ||
5bd4f169 | 4204 | /* Look through the relocs for a section during the first phase, and |
65f38f15 | 4205 | calculate needed space in the global offset table, procedure |
5d1634d7 | 4206 | linkage table, and dynamic reloc sections. */ |
5bd4f169 | 4207 | |
b34976b6 | 4208 | static bfd_boolean |
4ce794b7 AM |
4209 | ppc64_elf_check_relocs (bfd *abfd, struct bfd_link_info *info, |
4210 | asection *sec, const Elf_Internal_Rela *relocs) | |
5bd4f169 | 4211 | { |
65f38f15 | 4212 | struct ppc_link_hash_table *htab; |
5bd4f169 AM |
4213 | Elf_Internal_Shdr *symtab_hdr; |
4214 | struct elf_link_hash_entry **sym_hashes, **sym_hashes_end; | |
4215 | const Elf_Internal_Rela *rel; | |
4216 | const Elf_Internal_Rela *rel_end; | |
5bd4f169 | 4217 | asection *sreloc; |
1e2f5b6e | 4218 | asection **opd_sym_map; |
5bd4f169 | 4219 | |
1049f94e | 4220 | if (info->relocatable) |
b34976b6 | 4221 | return TRUE; |
5bd4f169 | 4222 | |
680a3378 AM |
4223 | /* Don't do anything special with non-loaded, non-alloced sections. |
4224 | In particular, any relocs in such sections should not affect GOT | |
4225 | and PLT reference counting (ie. we don't allow them to create GOT | |
4226 | or PLT entries), there's no possibility or desire to optimize TLS | |
4227 | relocs, and there's not much point in propagating relocs to shared | |
4228 | libs that the dynamic linker won't relocate. */ | |
4229 | if ((sec->flags & SEC_ALLOC) == 0) | |
4230 | return TRUE; | |
4231 | ||
65f38f15 | 4232 | htab = ppc_hash_table (info); |
5bd4f169 | 4233 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
5bd4f169 AM |
4234 | |
4235 | sym_hashes = elf_sym_hashes (abfd); | |
4236 | sym_hashes_end = (sym_hashes | |
1e2f5b6e AM |
4237 | + symtab_hdr->sh_size / sizeof (Elf64_External_Sym) |
4238 | - symtab_hdr->sh_info); | |
5bd4f169 AM |
4239 | |
4240 | sreloc = NULL; | |
1e2f5b6e AM |
4241 | opd_sym_map = NULL; |
4242 | if (strcmp (bfd_get_section_name (abfd, sec), ".opd") == 0) | |
4243 | { | |
4244 | /* Garbage collection needs some extra help with .opd sections. | |
4245 | We don't want to necessarily keep everything referenced by | |
4246 | relocs in .opd, as that would keep all functions. Instead, | |
4247 | if we reference an .opd symbol (a function descriptor), we | |
4248 | want to keep the function code symbol's section. This is | |
4249 | easy for global symbols, but for local syms we need to keep | |
4250 | information about the associated function section. Later, if | |
4251 | edit_opd deletes entries, we'll use this array to adjust | |
4252 | local syms in .opd. */ | |
4253 | union opd_info { | |
4254 | asection *func_section; | |
4255 | long entry_adjust; | |
4256 | }; | |
4257 | bfd_size_type amt; | |
4258 | ||
3f764659 | 4259 | amt = sec->size * sizeof (union opd_info) / 8; |
4ce794b7 | 4260 | opd_sym_map = bfd_zalloc (abfd, amt); |
1e2f5b6e | 4261 | if (opd_sym_map == NULL) |
b34976b6 | 4262 | return FALSE; |
f0abc2a1 | 4263 | ppc64_elf_section_data (sec)->opd.func_sec = opd_sym_map; |
1e2f5b6e | 4264 | } |
5bd4f169 | 4265 | |
82bd7b59 AM |
4266 | if (htab->sfpr == NULL |
4267 | && !create_linkage_sections (htab->elf.dynobj, info)) | |
b34976b6 | 4268 | return FALSE; |
82bd7b59 | 4269 | |
5bd4f169 AM |
4270 | rel_end = relocs + sec->reloc_count; |
4271 | for (rel = relocs; rel < rel_end; rel++) | |
4272 | { | |
4273 | unsigned long r_symndx; | |
4274 | struct elf_link_hash_entry *h; | |
04c9666a | 4275 | enum elf_ppc64_reloc_type r_type; |
411e1bfb | 4276 | int tls_type = 0; |
5bd4f169 AM |
4277 | |
4278 | r_symndx = ELF64_R_SYM (rel->r_info); | |
4279 | if (r_symndx < symtab_hdr->sh_info) | |
4280 | h = NULL; | |
4281 | else | |
4282 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
4283 | ||
4ce794b7 | 4284 | r_type = ELF64_R_TYPE (rel->r_info); |
a33d1f77 | 4285 | switch (r_type) |
5bd4f169 | 4286 | { |
411e1bfb AM |
4287 | case R_PPC64_GOT_TLSLD16: |
4288 | case R_PPC64_GOT_TLSLD16_LO: | |
4289 | case R_PPC64_GOT_TLSLD16_HI: | |
4290 | case R_PPC64_GOT_TLSLD16_HA: | |
e717da7e | 4291 | ppc64_tlsld_got (abfd)->refcount += 1; |
951fd09b | 4292 | tls_type = TLS_TLS | TLS_LD; |
411e1bfb AM |
4293 | goto dogottls; |
4294 | ||
4295 | case R_PPC64_GOT_TLSGD16: | |
4296 | case R_PPC64_GOT_TLSGD16_LO: | |
4297 | case R_PPC64_GOT_TLSGD16_HI: | |
4298 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b | 4299 | tls_type = TLS_TLS | TLS_GD; |
411e1bfb AM |
4300 | goto dogottls; |
4301 | ||
4302 | case R_PPC64_GOT_TPREL16_DS: | |
4303 | case R_PPC64_GOT_TPREL16_LO_DS: | |
4304 | case R_PPC64_GOT_TPREL16_HI: | |
4305 | case R_PPC64_GOT_TPREL16_HA: | |
4306 | if (info->shared) | |
4307 | info->flags |= DF_STATIC_TLS; | |
4308 | tls_type = TLS_TLS | TLS_TPREL; | |
4309 | goto dogottls; | |
4310 | ||
4311 | case R_PPC64_GOT_DTPREL16_DS: | |
4312 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
4313 | case R_PPC64_GOT_DTPREL16_HI: | |
4314 | case R_PPC64_GOT_DTPREL16_HA: | |
4315 | tls_type = TLS_TLS | TLS_DTPREL; | |
4316 | dogottls: | |
4317 | sec->has_tls_reloc = 1; | |
4318 | /* Fall thru */ | |
4319 | ||
5bd4f169 | 4320 | case R_PPC64_GOT16: |
5bd4f169 | 4321 | case R_PPC64_GOT16_DS: |
65f38f15 AM |
4322 | case R_PPC64_GOT16_HA: |
4323 | case R_PPC64_GOT16_HI: | |
4324 | case R_PPC64_GOT16_LO: | |
5bd4f169 | 4325 | case R_PPC64_GOT16_LO_DS: |
65f38f15 | 4326 | /* This symbol requires a global offset table entry. */ |
4c52953f | 4327 | sec->has_toc_reloc = 1; |
e717da7e AM |
4328 | if (ppc64_elf_tdata (abfd)->got == NULL |
4329 | && !create_got_section (abfd, info)) | |
b34976b6 | 4330 | return FALSE; |
5bd4f169 AM |
4331 | |
4332 | if (h != NULL) | |
4333 | { | |
411e1bfb AM |
4334 | struct ppc_link_hash_entry *eh; |
4335 | struct got_entry *ent; | |
65f38f15 | 4336 | |
411e1bfb AM |
4337 | eh = (struct ppc_link_hash_entry *) h; |
4338 | for (ent = eh->elf.got.glist; ent != NULL; ent = ent->next) | |
4339 | if (ent->addend == rel->r_addend | |
e717da7e | 4340 | && ent->owner == abfd |
411e1bfb AM |
4341 | && ent->tls_type == tls_type) |
4342 | break; | |
4343 | if (ent == NULL) | |
5bd4f169 | 4344 | { |
411e1bfb | 4345 | bfd_size_type amt = sizeof (*ent); |
4ce794b7 | 4346 | ent = bfd_alloc (abfd, amt); |
411e1bfb | 4347 | if (ent == NULL) |
b34976b6 | 4348 | return FALSE; |
411e1bfb AM |
4349 | ent->next = eh->elf.got.glist; |
4350 | ent->addend = rel->r_addend; | |
e717da7e | 4351 | ent->owner = abfd; |
411e1bfb AM |
4352 | ent->tls_type = tls_type; |
4353 | ent->got.refcount = 0; | |
4354 | eh->elf.got.glist = ent; | |
5bd4f169 | 4355 | } |
411e1bfb | 4356 | ent->got.refcount += 1; |
e7b938ca | 4357 | eh->tls_mask |= tls_type; |
5bd4f169 | 4358 | } |
411e1bfb AM |
4359 | else |
4360 | /* This is a global offset table entry for a local symbol. */ | |
4361 | if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
4362 | rel->r_addend, tls_type)) | |
4363 | return FALSE; | |
5bd4f169 AM |
4364 | break; |
4365 | ||
5bd4f169 | 4366 | case R_PPC64_PLT16_HA: |
65f38f15 AM |
4367 | case R_PPC64_PLT16_HI: |
4368 | case R_PPC64_PLT16_LO: | |
4369 | case R_PPC64_PLT32: | |
4370 | case R_PPC64_PLT64: | |
5bd4f169 | 4371 | /* This symbol requires a procedure linkage table entry. We |
3fad3c7c AM |
4372 | actually build the entry in adjust_dynamic_symbol, |
4373 | because this might be a case of linking PIC code without | |
4374 | linking in any dynamic objects, in which case we don't | |
4375 | need to generate a procedure linkage table after all. */ | |
5bd4f169 AM |
4376 | if (h == NULL) |
4377 | { | |
4378 | /* It does not make sense to have a procedure linkage | |
3fad3c7c | 4379 | table entry for a local symbol. */ |
5bd4f169 | 4380 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 4381 | return FALSE; |
5bd4f169 | 4382 | } |
411e1bfb AM |
4383 | else |
4384 | if (!update_plt_info (abfd, (struct ppc_link_hash_entry *) h, | |
4385 | rel->r_addend)) | |
4386 | return FALSE; | |
5bd4f169 AM |
4387 | break; |
4388 | ||
4389 | /* The following relocations don't need to propagate the | |
4390 | relocation if linking a shared object since they are | |
4391 | section relative. */ | |
4392 | case R_PPC64_SECTOFF: | |
4393 | case R_PPC64_SECTOFF_LO: | |
4394 | case R_PPC64_SECTOFF_HI: | |
4395 | case R_PPC64_SECTOFF_HA: | |
4396 | case R_PPC64_SECTOFF_DS: | |
4397 | case R_PPC64_SECTOFF_LO_DS: | |
411e1bfb AM |
4398 | case R_PPC64_DTPREL16: |
4399 | case R_PPC64_DTPREL16_LO: | |
4400 | case R_PPC64_DTPREL16_HI: | |
4401 | case R_PPC64_DTPREL16_HA: | |
4402 | case R_PPC64_DTPREL16_DS: | |
4403 | case R_PPC64_DTPREL16_LO_DS: | |
4404 | case R_PPC64_DTPREL16_HIGHER: | |
4405 | case R_PPC64_DTPREL16_HIGHERA: | |
4406 | case R_PPC64_DTPREL16_HIGHEST: | |
4407 | case R_PPC64_DTPREL16_HIGHESTA: | |
5bd4f169 AM |
4408 | break; |
4409 | ||
ad8e1ba5 AM |
4410 | /* Nor do these. */ |
4411 | case R_PPC64_TOC16: | |
4412 | case R_PPC64_TOC16_LO: | |
4413 | case R_PPC64_TOC16_HI: | |
4414 | case R_PPC64_TOC16_HA: | |
4415 | case R_PPC64_TOC16_DS: | |
4416 | case R_PPC64_TOC16_LO_DS: | |
4c52953f | 4417 | sec->has_toc_reloc = 1; |
ad8e1ba5 AM |
4418 | break; |
4419 | ||
5bd4f169 AM |
4420 | /* This relocation describes the C++ object vtable hierarchy. |
4421 | Reconstruct it for later use during GC. */ | |
4422 | case R_PPC64_GNU_VTINHERIT: | |
c152c796 | 4423 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) |
b34976b6 | 4424 | return FALSE; |
5bd4f169 AM |
4425 | break; |
4426 | ||
4427 | /* This relocation describes which C++ vtable entries are actually | |
4428 | used. Record for later use during GC. */ | |
4429 | case R_PPC64_GNU_VTENTRY: | |
c152c796 | 4430 | if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) |
b34976b6 | 4431 | return FALSE; |
5bd4f169 AM |
4432 | break; |
4433 | ||
721956f4 AM |
4434 | case R_PPC64_REL14: |
4435 | case R_PPC64_REL14_BRTAKEN: | |
4436 | case R_PPC64_REL14_BRNTAKEN: | |
4437 | htab->has_14bit_branch = 1; | |
4438 | /* Fall through. */ | |
4439 | ||
5d1634d7 | 4440 | case R_PPC64_REL24: |
8387904d | 4441 | if (h != NULL) |
5d1634d7 AM |
4442 | { |
4443 | /* We may need a .plt entry if the function this reloc | |
4444 | refers to is in a shared lib. */ | |
411e1bfb AM |
4445 | if (!update_plt_info (abfd, (struct ppc_link_hash_entry *) h, |
4446 | rel->r_addend)) | |
4447 | return FALSE; | |
8387904d AM |
4448 | if (h == &htab->tls_get_addr->elf |
4449 | || h == &htab->tls_get_addr_fd->elf) | |
411e1bfb | 4450 | sec->has_tls_reloc = 1; |
8387904d AM |
4451 | else if (htab->tls_get_addr == NULL |
4452 | && !strncmp (h->root.root.string, ".__tls_get_addr", 15) | |
a48ebf4d AM |
4453 | && (h->root.root.string[15] == 0 |
4454 | || h->root.root.string[15] == '@')) | |
411e1bfb | 4455 | { |
8387904d AM |
4456 | htab->tls_get_addr = (struct ppc_link_hash_entry *) h; |
4457 | sec->has_tls_reloc = 1; | |
4458 | } | |
4459 | else if (htab->tls_get_addr_fd == NULL | |
4460 | && !strncmp (h->root.root.string, "__tls_get_addr", 14) | |
4461 | && (h->root.root.string[14] == 0 | |
4462 | || h->root.root.string[14] == '@')) | |
4463 | { | |
4464 | htab->tls_get_addr_fd = (struct ppc_link_hash_entry *) h; | |
411e1bfb AM |
4465 | sec->has_tls_reloc = 1; |
4466 | } | |
4467 | } | |
4468 | break; | |
4469 | ||
4470 | case R_PPC64_TPREL64: | |
4471 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_TPREL; | |
4472 | if (info->shared) | |
4473 | info->flags |= DF_STATIC_TLS; | |
4474 | goto dotlstoc; | |
4475 | ||
4476 | case R_PPC64_DTPMOD64: | |
4477 | if (rel + 1 < rel_end | |
4478 | && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64) | |
4479 | && rel[1].r_offset == rel->r_offset + 8) | |
951fd09b | 4480 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_GD; |
411e1bfb | 4481 | else |
951fd09b | 4482 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_LD; |
411e1bfb AM |
4483 | goto dotlstoc; |
4484 | ||
4485 | case R_PPC64_DTPREL64: | |
4486 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_DTPREL; | |
4487 | if (rel != relocs | |
4488 | && rel[-1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPMOD64) | |
4489 | && rel[-1].r_offset == rel->r_offset - 8) | |
4490 | /* This is the second reloc of a dtpmod, dtprel pair. | |
4491 | Don't mark with TLS_DTPREL. */ | |
4492 | goto dodyn; | |
4493 | ||
4494 | dotlstoc: | |
4495 | sec->has_tls_reloc = 1; | |
4496 | if (h != NULL) | |
4497 | { | |
4498 | struct ppc_link_hash_entry *eh; | |
4499 | eh = (struct ppc_link_hash_entry *) h; | |
e7b938ca | 4500 | eh->tls_mask |= tls_type; |
411e1bfb AM |
4501 | } |
4502 | else | |
4503 | if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
4504 | rel->r_addend, tls_type)) | |
4505 | return FALSE; | |
4506 | ||
4507 | if (ppc64_elf_section_data (sec)->t_symndx == NULL) | |
4508 | { | |
e7b938ca | 4509 | /* One extra to simplify get_tls_mask. */ |
eea6121a | 4510 | bfd_size_type amt = sec->size * sizeof (unsigned) / 8 + 1; |
4ce794b7 | 4511 | ppc64_elf_section_data (sec)->t_symndx = bfd_zalloc (abfd, amt); |
411e1bfb AM |
4512 | if (ppc64_elf_section_data (sec)->t_symndx == NULL) |
4513 | return FALSE; | |
4514 | } | |
4515 | BFD_ASSERT (rel->r_offset % 8 == 0); | |
4516 | ppc64_elf_section_data (sec)->t_symndx[rel->r_offset / 8] = r_symndx; | |
951fd09b AM |
4517 | |
4518 | /* Mark the second slot of a GD or LD entry. | |
4519 | -1 to indicate GD and -2 to indicate LD. */ | |
4520 | if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_GD)) | |
4521 | ppc64_elf_section_data (sec)->t_symndx[rel->r_offset / 8 + 1] = -1; | |
4522 | else if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_LD)) | |
4523 | ppc64_elf_section_data (sec)->t_symndx[rel->r_offset / 8 + 1] = -2; | |
411e1bfb AM |
4524 | goto dodyn; |
4525 | ||
4526 | case R_PPC64_TPREL16: | |
4527 | case R_PPC64_TPREL16_LO: | |
4528 | case R_PPC64_TPREL16_HI: | |
4529 | case R_PPC64_TPREL16_HA: | |
4530 | case R_PPC64_TPREL16_DS: | |
4531 | case R_PPC64_TPREL16_LO_DS: | |
4532 | case R_PPC64_TPREL16_HIGHER: | |
4533 | case R_PPC64_TPREL16_HIGHERA: | |
4534 | case R_PPC64_TPREL16_HIGHEST: | |
4535 | case R_PPC64_TPREL16_HIGHESTA: | |
4536 | if (info->shared) | |
4537 | { | |
4538 | info->flags |= DF_STATIC_TLS; | |
4539 | goto dodyn; | |
5d1634d7 AM |
4540 | } |
4541 | break; | |
4542 | ||
e86ce104 | 4543 | case R_PPC64_ADDR64: |
1e2f5b6e | 4544 | if (opd_sym_map != NULL |
1e2f5b6e | 4545 | && rel + 1 < rel_end |
4ce794b7 | 4546 | && ELF64_R_TYPE ((rel + 1)->r_info) == R_PPC64_TOC) |
1e2f5b6e | 4547 | { |
8387904d AM |
4548 | if (h != NULL) |
4549 | { | |
4550 | if (h->root.root.string[0] == '.' | |
4551 | && h->root.root.string[1] != 0 | |
4552 | && get_fdh ((struct ppc_link_hash_entry *) h, htab)) | |
4553 | ; | |
4554 | else | |
4555 | ((struct ppc_link_hash_entry *) h)->is_func = 1; | |
4556 | } | |
4557 | else | |
4558 | { | |
4559 | asection *s; | |
1e2f5b6e | 4560 | |
8387904d AM |
4561 | s = bfd_section_from_r_symndx (abfd, &htab->sym_sec, sec, |
4562 | r_symndx); | |
4563 | if (s == NULL) | |
4564 | return FALSE; | |
4565 | else if (s != sec) | |
3f764659 | 4566 | opd_sym_map[rel->r_offset / 8] = s; |
8387904d | 4567 | } |
1e2f5b6e | 4568 | } |
e86ce104 AM |
4569 | /* Fall through. */ |
4570 | ||
04c9666a | 4571 | case R_PPC64_REL30: |
5bd4f169 | 4572 | case R_PPC64_REL32: |
04c9666a | 4573 | case R_PPC64_REL64: |
65f38f15 AM |
4574 | case R_PPC64_ADDR14: |
4575 | case R_PPC64_ADDR14_BRNTAKEN: | |
4576 | case R_PPC64_ADDR14_BRTAKEN: | |
4577 | case R_PPC64_ADDR16: | |
4578 | case R_PPC64_ADDR16_DS: | |
4579 | case R_PPC64_ADDR16_HA: | |
4580 | case R_PPC64_ADDR16_HI: | |
4581 | case R_PPC64_ADDR16_HIGHER: | |
4582 | case R_PPC64_ADDR16_HIGHERA: | |
4583 | case R_PPC64_ADDR16_HIGHEST: | |
4584 | case R_PPC64_ADDR16_HIGHESTA: | |
4585 | case R_PPC64_ADDR16_LO: | |
4586 | case R_PPC64_ADDR16_LO_DS: | |
4587 | case R_PPC64_ADDR24: | |
65f38f15 | 4588 | case R_PPC64_ADDR32: |
65f38f15 AM |
4589 | case R_PPC64_UADDR16: |
4590 | case R_PPC64_UADDR32: | |
4591 | case R_PPC64_UADDR64: | |
5bd4f169 | 4592 | case R_PPC64_TOC: |
81848ca0 AM |
4593 | if (h != NULL && !info->shared) |
4594 | /* We may need a copy reloc. */ | |
f5385ebf | 4595 | h->non_got_ref = 1; |
81848ca0 | 4596 | |
41bd81ab | 4597 | /* Don't propagate .opd relocs. */ |
1e2f5b6e | 4598 | if (NO_OPD_RELOCS && opd_sym_map != NULL) |
e86ce104 | 4599 | break; |
e86ce104 | 4600 | |
65f38f15 AM |
4601 | /* If we are creating a shared library, and this is a reloc |
4602 | against a global symbol, or a non PC relative reloc | |
4603 | against a local symbol, then we need to copy the reloc | |
4604 | into the shared library. However, if we are linking with | |
4605 | -Bsymbolic, we do not need to copy a reloc against a | |
4606 | global symbol which is defined in an object we are | |
4607 | including in the link (i.e., DEF_REGULAR is set). At | |
4608 | this point we have not seen all the input files, so it is | |
4609 | possible that DEF_REGULAR is not set now but will be set | |
4610 | later (it is never cleared). In case of a weak definition, | |
4611 | DEF_REGULAR may be cleared later by a strong definition in | |
4612 | a shared library. We account for that possibility below by | |
f4656909 | 4613 | storing information in the dyn_relocs field of the hash |
65f38f15 AM |
4614 | table entry. A similar situation occurs when creating |
4615 | shared libraries and symbol visibility changes render the | |
4616 | symbol local. | |
4617 | ||
4618 | If on the other hand, we are creating an executable, we | |
4619 | may need to keep relocations for symbols satisfied by a | |
4620 | dynamic library if we manage to avoid copy relocs for the | |
4621 | symbol. */ | |
411e1bfb | 4622 | dodyn: |
65f38f15 | 4623 | if ((info->shared |
411e1bfb | 4624 | && (MUST_BE_DYN_RELOC (r_type) |
65f38f15 AM |
4625 | || (h != NULL |
4626 | && (! info->symbolic | |
4627 | || h->root.type == bfd_link_hash_defweak | |
f5385ebf | 4628 | || !h->def_regular)))) |
f4656909 AM |
4629 | || (ELIMINATE_COPY_RELOCS |
4630 | && !info->shared | |
65f38f15 AM |
4631 | && h != NULL |
4632 | && (h->root.type == bfd_link_hash_defweak | |
f5385ebf | 4633 | || !h->def_regular))) |
5bd4f169 | 4634 | { |
ec338859 AM |
4635 | struct ppc_dyn_relocs *p; |
4636 | struct ppc_dyn_relocs **head; | |
4637 | ||
65f38f15 AM |
4638 | /* We must copy these reloc types into the output file. |
4639 | Create a reloc section in dynobj and make room for | |
4640 | this reloc. */ | |
5bd4f169 AM |
4641 | if (sreloc == NULL) |
4642 | { | |
4643 | const char *name; | |
65f38f15 | 4644 | bfd *dynobj; |
5bd4f169 AM |
4645 | |
4646 | name = (bfd_elf_string_from_elf_section | |
4647 | (abfd, | |
4648 | elf_elfheader (abfd)->e_shstrndx, | |
4649 | elf_section_data (sec)->rel_hdr.sh_name)); | |
4650 | if (name == NULL) | |
b34976b6 | 4651 | return FALSE; |
5bd4f169 | 4652 | |
65f38f15 AM |
4653 | if (strncmp (name, ".rela", 5) != 0 |
4654 | || strcmp (bfd_get_section_name (abfd, sec), | |
4655 | name + 5) != 0) | |
4656 | { | |
4657 | (*_bfd_error_handler) | |
d003868e AM |
4658 | (_("%B: bad relocation section name `%s\'"), |
4659 | abfd, name); | |
5d1634d7 | 4660 | bfd_set_error (bfd_error_bad_value); |
65f38f15 AM |
4661 | } |
4662 | ||
65f38f15 | 4663 | dynobj = htab->elf.dynobj; |
5bd4f169 AM |
4664 | sreloc = bfd_get_section_by_name (dynobj, name); |
4665 | if (sreloc == NULL) | |
4666 | { | |
4667 | flagword flags; | |
4668 | ||
4669 | sreloc = bfd_make_section (dynobj, name); | |
4670 | flags = (SEC_HAS_CONTENTS | SEC_READONLY | |
4671 | | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
4672 | if ((sec->flags & SEC_ALLOC) != 0) | |
4673 | flags |= SEC_ALLOC | SEC_LOAD; | |
4674 | if (sreloc == NULL | |
4675 | || ! bfd_set_section_flags (dynobj, sreloc, flags) | |
65f38f15 | 4676 | || ! bfd_set_section_alignment (dynobj, sreloc, 3)) |
b34976b6 | 4677 | return FALSE; |
5bd4f169 | 4678 | } |
65f38f15 | 4679 | elf_section_data (sec)->sreloc = sreloc; |
5bd4f169 AM |
4680 | } |
4681 | ||
65f38f15 AM |
4682 | /* If this is a global symbol, we count the number of |
4683 | relocations we need for this symbol. */ | |
4684 | if (h != NULL) | |
4685 | { | |
ec338859 | 4686 | head = &((struct ppc_link_hash_entry *) h)->dyn_relocs; |
65f38f15 AM |
4687 | } |
4688 | else | |
4689 | { | |
ec338859 AM |
4690 | /* Track dynamic relocs needed for local syms too. |
4691 | We really need local syms available to do this | |
4692 | easily. Oh well. */ | |
4693 | ||
4694 | asection *s; | |
4695 | s = bfd_section_from_r_symndx (abfd, &htab->sym_sec, | |
4696 | sec, r_symndx); | |
4697 | if (s == NULL) | |
b34976b6 | 4698 | return FALSE; |
ec338859 AM |
4699 | |
4700 | head = ((struct ppc_dyn_relocs **) | |
4701 | &elf_section_data (s)->local_dynrel); | |
65f38f15 | 4702 | } |
ec338859 AM |
4703 | |
4704 | p = *head; | |
4705 | if (p == NULL || p->sec != sec) | |
4706 | { | |
4ce794b7 | 4707 | p = bfd_alloc (htab->elf.dynobj, sizeof *p); |
ec338859 | 4708 | if (p == NULL) |
b34976b6 | 4709 | return FALSE; |
ec338859 AM |
4710 | p->next = *head; |
4711 | *head = p; | |
4712 | p->sec = sec; | |
4713 | p->count = 0; | |
4714 | p->pc_count = 0; | |
4715 | } | |
4716 | ||
4717 | p->count += 1; | |
411e1bfb | 4718 | if (!MUST_BE_DYN_RELOC (r_type)) |
ec338859 | 4719 | p->pc_count += 1; |
65f38f15 | 4720 | } |
5bd4f169 | 4721 | break; |
65f38f15 AM |
4722 | |
4723 | default: | |
96e0dda4 | 4724 | break; |
5bd4f169 AM |
4725 | } |
4726 | } | |
4727 | ||
b34976b6 | 4728 | return TRUE; |
5bd4f169 AM |
4729 | } |
4730 | ||
8387904d AM |
4731 | /* OFFSET in OPD_SEC specifies a function descriptor. Return the address |
4732 | of the code entry point, and its section. */ | |
4733 | ||
4734 | static bfd_vma | |
4735 | opd_entry_value (asection *opd_sec, | |
4736 | bfd_vma offset, | |
4737 | asection **code_sec, | |
4738 | bfd_vma *code_off) | |
4739 | { | |
4740 | bfd *opd_bfd = opd_sec->owner; | |
8860955f | 4741 | Elf_Internal_Rela *relocs; |
8387904d | 4742 | Elf_Internal_Rela *lo, *hi, *look; |
645ea6a9 | 4743 | bfd_vma val; |
8387904d | 4744 | |
4b85d634 AM |
4745 | /* No relocs implies we are linking a --just-symbols object. */ |
4746 | if (opd_sec->reloc_count == 0) | |
4747 | { | |
4748 | bfd_vma val; | |
4749 | ||
4750 | if (!bfd_get_section_contents (opd_bfd, opd_sec, &val, offset, 8)) | |
4751 | return (bfd_vma) -1; | |
4752 | ||
4753 | if (code_sec != NULL) | |
4754 | { | |
4755 | asection *sec, *likely = NULL; | |
4756 | for (sec = opd_bfd->sections; sec != NULL; sec = sec->next) | |
4757 | if (sec->vma <= val | |
4758 | && (sec->flags & SEC_LOAD) != 0 | |
4759 | && (sec->flags & SEC_ALLOC) != 0) | |
4760 | likely = sec; | |
4761 | if (likely != NULL) | |
4762 | { | |
4763 | *code_sec = likely; | |
4764 | if (code_off != NULL) | |
4765 | *code_off = val - likely->vma; | |
4766 | } | |
4767 | } | |
4768 | return val; | |
4769 | } | |
4770 | ||
8860955f AM |
4771 | relocs = ppc64_elf_tdata (opd_bfd)->opd_relocs; |
4772 | if (relocs == NULL) | |
4773 | relocs = _bfd_elf_link_read_relocs (opd_bfd, opd_sec, NULL, NULL, TRUE); | |
645ea6a9 | 4774 | |
8387904d | 4775 | /* Go find the opd reloc at the sym address. */ |
8860955f | 4776 | lo = relocs; |
8387904d AM |
4777 | BFD_ASSERT (lo != NULL); |
4778 | hi = lo + opd_sec->reloc_count - 1; /* ignore last reloc */ | |
645ea6a9 | 4779 | val = (bfd_vma) -1; |
8387904d AM |
4780 | while (lo < hi) |
4781 | { | |
4782 | look = lo + (hi - lo) / 2; | |
4783 | if (look->r_offset < offset) | |
4784 | lo = look + 1; | |
4785 | else if (look->r_offset > offset) | |
4786 | hi = look; | |
4787 | else | |
4788 | { | |
4789 | Elf_Internal_Shdr *symtab_hdr = &elf_tdata (opd_bfd)->symtab_hdr; | |
4790 | if (ELF64_R_TYPE (look->r_info) == R_PPC64_ADDR64 | |
4791 | && ELF64_R_TYPE ((look + 1)->r_info) == R_PPC64_TOC) | |
4792 | { | |
4793 | unsigned long symndx = ELF64_R_SYM (look->r_info); | |
8387904d AM |
4794 | asection *sec; |
4795 | ||
4796 | if (symndx < symtab_hdr->sh_info) | |
4797 | { | |
4798 | Elf_Internal_Sym *sym; | |
4799 | ||
4800 | sym = (Elf_Internal_Sym *) symtab_hdr->contents; | |
4801 | if (sym == NULL) | |
4802 | { | |
4803 | sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr, | |
4804 | symtab_hdr->sh_info, | |
4805 | 0, NULL, NULL, NULL); | |
4806 | if (sym == NULL) | |
645ea6a9 | 4807 | break; |
8387904d AM |
4808 | symtab_hdr->contents = (bfd_byte *) sym; |
4809 | } | |
4810 | ||
4811 | sym += symndx; | |
4812 | val = sym->st_value; | |
4813 | sec = NULL; | |
4814 | if ((sym->st_shndx != SHN_UNDEF | |
4815 | && sym->st_shndx < SHN_LORESERVE) | |
4816 | || sym->st_shndx > SHN_HIRESERVE) | |
4817 | sec = bfd_section_from_elf_index (opd_bfd, sym->st_shndx); | |
4818 | BFD_ASSERT ((sec->flags & SEC_MERGE) == 0); | |
4819 | } | |
4820 | else | |
4821 | { | |
4822 | struct elf_link_hash_entry **sym_hashes; | |
4823 | struct elf_link_hash_entry *rh; | |
4824 | ||
4825 | sym_hashes = elf_sym_hashes (opd_bfd); | |
4826 | rh = sym_hashes[symndx - symtab_hdr->sh_info]; | |
4827 | while (rh->root.type == bfd_link_hash_indirect | |
4828 | || rh->root.type == bfd_link_hash_warning) | |
4829 | rh = ((struct elf_link_hash_entry *) rh->root.u.i.link); | |
4830 | BFD_ASSERT (rh->root.type == bfd_link_hash_defined | |
4831 | || rh->root.type == bfd_link_hash_defweak); | |
4832 | val = rh->root.u.def.value; | |
4833 | sec = rh->root.u.def.section; | |
4834 | } | |
4835 | val += look->r_addend; | |
4836 | if (code_off != NULL) | |
4837 | *code_off = val; | |
4838 | if (code_sec != NULL) | |
4839 | *code_sec = sec; | |
4840 | if (sec != NULL && sec->output_section != NULL) | |
4841 | val += sec->output_section->vma + sec->output_offset; | |
8387904d AM |
4842 | } |
4843 | break; | |
4844 | } | |
4845 | } | |
645ea6a9 | 4846 | |
645ea6a9 | 4847 | return val; |
8387904d AM |
4848 | } |
4849 | ||
5bd4f169 AM |
4850 | /* Return the section that should be marked against GC for a given |
4851 | relocation. */ | |
4852 | ||
4853 | static asection * | |
4ce794b7 | 4854 | ppc64_elf_gc_mark_hook (asection *sec, |
ccfa59ea | 4855 | struct bfd_link_info *info, |
4ce794b7 AM |
4856 | Elf_Internal_Rela *rel, |
4857 | struct elf_link_hash_entry *h, | |
4858 | Elf_Internal_Sym *sym) | |
5bd4f169 | 4859 | { |
ccfa59ea AM |
4860 | asection *rsec; |
4861 | ||
4862 | /* First mark all our entry sym sections. */ | |
4863 | if (info->gc_sym_list != NULL) | |
4864 | { | |
4865 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
4866 | struct bfd_sym_chain *sym = info->gc_sym_list; | |
4867 | ||
4868 | info->gc_sym_list = NULL; | |
4869 | do | |
4870 | { | |
4871 | struct ppc_link_hash_entry *eh; | |
4872 | ||
4873 | eh = (struct ppc_link_hash_entry *) | |
4874 | elf_link_hash_lookup (&htab->elf, sym->name, FALSE, FALSE, FALSE); | |
4875 | if (eh == NULL) | |
4876 | continue; | |
4877 | if (eh->elf.root.type != bfd_link_hash_defined | |
4878 | && eh->elf.root.type != bfd_link_hash_defweak) | |
4879 | continue; | |
4880 | ||
4881 | if (eh->is_func_descriptor) | |
4882 | rsec = eh->oh->elf.root.u.def.section; | |
8387904d AM |
4883 | else if (get_opd_info (eh->elf.root.u.def.section) != NULL |
4884 | && opd_entry_value (eh->elf.root.u.def.section, | |
4885 | eh->elf.root.u.def.value, | |
4886 | &rsec, NULL) != (bfd_vma) -1) | |
4887 | ; | |
ccfa59ea AM |
4888 | else |
4889 | continue; | |
4890 | ||
4891 | if (!rsec->gc_mark) | |
4892 | _bfd_elf_gc_mark (info, rsec, ppc64_elf_gc_mark_hook); | |
4893 | ||
4894 | rsec = eh->elf.root.u.def.section; | |
4895 | if (!rsec->gc_mark) | |
4896 | _bfd_elf_gc_mark (info, rsec, ppc64_elf_gc_mark_hook); | |
4897 | ||
4898 | sym = sym->next; | |
4899 | } | |
4900 | while (sym != NULL); | |
4901 | } | |
4902 | ||
4903 | /* Syms return NULL if we're marking .opd, so we avoid marking all | |
4904 | function sections, as all functions are referenced in .opd. */ | |
4905 | rsec = NULL; | |
4906 | if (get_opd_info (sec) != NULL) | |
4907 | return rsec; | |
1e2f5b6e | 4908 | |
5bd4f169 AM |
4909 | if (h != NULL) |
4910 | { | |
04c9666a | 4911 | enum elf_ppc64_reloc_type r_type; |
ccfa59ea | 4912 | struct ppc_link_hash_entry *eh; |
a33d1f77 | 4913 | |
4ce794b7 | 4914 | r_type = ELF64_R_TYPE (rel->r_info); |
a33d1f77 | 4915 | switch (r_type) |
5bd4f169 AM |
4916 | { |
4917 | case R_PPC64_GNU_VTINHERIT: | |
4918 | case R_PPC64_GNU_VTENTRY: | |
4919 | break; | |
4920 | ||
4921 | default: | |
4922 | switch (h->root.type) | |
4923 | { | |
4924 | case bfd_link_hash_defined: | |
4925 | case bfd_link_hash_defweak: | |
ccfa59ea AM |
4926 | eh = (struct ppc_link_hash_entry *) h; |
4927 | if (eh->oh != NULL && eh->oh->is_func_descriptor) | |
4928 | eh = eh->oh; | |
1e2f5b6e AM |
4929 | |
4930 | /* Function descriptor syms cause the associated | |
4931 | function code sym section to be marked. */ | |
ccfa59ea AM |
4932 | if (eh->is_func_descriptor) |
4933 | { | |
4934 | /* They also mark their opd section. */ | |
4935 | if (!eh->elf.root.u.def.section->gc_mark) | |
4936 | _bfd_elf_gc_mark (info, eh->elf.root.u.def.section, | |
4937 | ppc64_elf_gc_mark_hook); | |
4938 | ||
4939 | rsec = eh->oh->elf.root.u.def.section; | |
4940 | } | |
8387904d AM |
4941 | else if (get_opd_info (eh->elf.root.u.def.section) != NULL |
4942 | && opd_entry_value (eh->elf.root.u.def.section, | |
4943 | eh->elf.root.u.def.value, | |
4944 | &rsec, NULL) != (bfd_vma) -1) | |
4945 | { | |
4946 | if (!eh->elf.root.u.def.section->gc_mark) | |
4947 | _bfd_elf_gc_mark (info, eh->elf.root.u.def.section, | |
4948 | ppc64_elf_gc_mark_hook); | |
4949 | } | |
ccfa59ea | 4950 | else |
1e2f5b6e AM |
4951 | rsec = h->root.u.def.section; |
4952 | break; | |
5bd4f169 AM |
4953 | |
4954 | case bfd_link_hash_common: | |
1e2f5b6e AM |
4955 | rsec = h->root.u.c.p->section; |
4956 | break; | |
5bd4f169 AM |
4957 | |
4958 | default: | |
4959 | break; | |
4960 | } | |
4961 | } | |
4962 | } | |
4963 | else | |
4964 | { | |
1e2f5b6e AM |
4965 | asection **opd_sym_section; |
4966 | ||
4967 | rsec = bfd_section_from_elf_index (sec->owner, sym->st_shndx); | |
ccfa59ea | 4968 | opd_sym_section = get_opd_info (rsec); |
1e2f5b6e | 4969 | if (opd_sym_section != NULL) |
ccfa59ea AM |
4970 | { |
4971 | if (!rsec->gc_mark) | |
4972 | _bfd_elf_gc_mark (info, rsec, ppc64_elf_gc_mark_hook); | |
4973 | ||
3f764659 | 4974 | rsec = opd_sym_section[sym->st_value / 8]; |
ccfa59ea | 4975 | } |
5bd4f169 AM |
4976 | } |
4977 | ||
1e2f5b6e | 4978 | return rsec; |
5bd4f169 AM |
4979 | } |
4980 | ||
65f38f15 AM |
4981 | /* Update the .got, .plt. and dynamic reloc reference counts for the |
4982 | section being removed. */ | |
5bd4f169 | 4983 | |
b34976b6 | 4984 | static bfd_boolean |
4ce794b7 AM |
4985 | ppc64_elf_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info, |
4986 | asection *sec, const Elf_Internal_Rela *relocs) | |
5bd4f169 | 4987 | { |
411e1bfb | 4988 | struct ppc_link_hash_table *htab; |
5bd4f169 AM |
4989 | Elf_Internal_Shdr *symtab_hdr; |
4990 | struct elf_link_hash_entry **sym_hashes; | |
411e1bfb | 4991 | struct got_entry **local_got_ents; |
5bd4f169 | 4992 | const Elf_Internal_Rela *rel, *relend; |
5bd4f169 | 4993 | |
680a3378 AM |
4994 | if ((sec->flags & SEC_ALLOC) == 0) |
4995 | return TRUE; | |
4996 | ||
ec338859 AM |
4997 | elf_section_data (sec)->local_dynrel = NULL; |
4998 | ||
411e1bfb | 4999 | htab = ppc_hash_table (info); |
5bd4f169 AM |
5000 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
5001 | sym_hashes = elf_sym_hashes (abfd); | |
411e1bfb | 5002 | local_got_ents = elf_local_got_ents (abfd); |
5bd4f169 AM |
5003 | |
5004 | relend = relocs + sec->reloc_count; | |
5005 | for (rel = relocs; rel < relend; rel++) | |
a33d1f77 AM |
5006 | { |
5007 | unsigned long r_symndx; | |
04c9666a | 5008 | enum elf_ppc64_reloc_type r_type; |
58ac9f71 | 5009 | struct elf_link_hash_entry *h = NULL; |
411e1bfb | 5010 | char tls_type = 0; |
5bd4f169 | 5011 | |
a33d1f77 | 5012 | r_symndx = ELF64_R_SYM (rel->r_info); |
4ce794b7 | 5013 | r_type = ELF64_R_TYPE (rel->r_info); |
58ac9f71 AM |
5014 | if (r_symndx >= symtab_hdr->sh_info) |
5015 | { | |
5016 | struct ppc_link_hash_entry *eh; | |
5017 | struct ppc_dyn_relocs **pp; | |
5018 | struct ppc_dyn_relocs *p; | |
5019 | ||
5020 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
3eb128b2 AM |
5021 | while (h->root.type == bfd_link_hash_indirect |
5022 | || h->root.type == bfd_link_hash_warning) | |
5023 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
58ac9f71 AM |
5024 | eh = (struct ppc_link_hash_entry *) h; |
5025 | ||
5026 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next) | |
5027 | if (p->sec == sec) | |
5028 | { | |
5029 | /* Everything must go for SEC. */ | |
5030 | *pp = p->next; | |
5031 | break; | |
5032 | } | |
5033 | } | |
5034 | ||
a33d1f77 AM |
5035 | switch (r_type) |
5036 | { | |
411e1bfb AM |
5037 | case R_PPC64_GOT_TLSLD16: |
5038 | case R_PPC64_GOT_TLSLD16_LO: | |
5039 | case R_PPC64_GOT_TLSLD16_HI: | |
5040 | case R_PPC64_GOT_TLSLD16_HA: | |
e717da7e | 5041 | ppc64_tlsld_got (abfd)->refcount -= 1; |
951fd09b | 5042 | tls_type = TLS_TLS | TLS_LD; |
411e1bfb AM |
5043 | goto dogot; |
5044 | ||
5045 | case R_PPC64_GOT_TLSGD16: | |
5046 | case R_PPC64_GOT_TLSGD16_LO: | |
5047 | case R_PPC64_GOT_TLSGD16_HI: | |
5048 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b | 5049 | tls_type = TLS_TLS | TLS_GD; |
411e1bfb AM |
5050 | goto dogot; |
5051 | ||
5052 | case R_PPC64_GOT_TPREL16_DS: | |
5053 | case R_PPC64_GOT_TPREL16_LO_DS: | |
5054 | case R_PPC64_GOT_TPREL16_HI: | |
5055 | case R_PPC64_GOT_TPREL16_HA: | |
5056 | tls_type = TLS_TLS | TLS_TPREL; | |
5057 | goto dogot; | |
5058 | ||
5059 | case R_PPC64_GOT_DTPREL16_DS: | |
5060 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
5061 | case R_PPC64_GOT_DTPREL16_HI: | |
5062 | case R_PPC64_GOT_DTPREL16_HA: | |
5063 | tls_type = TLS_TLS | TLS_DTPREL; | |
5064 | goto dogot; | |
5065 | ||
a33d1f77 AM |
5066 | case R_PPC64_GOT16: |
5067 | case R_PPC64_GOT16_DS: | |
5068 | case R_PPC64_GOT16_HA: | |
5069 | case R_PPC64_GOT16_HI: | |
5070 | case R_PPC64_GOT16_LO: | |
5071 | case R_PPC64_GOT16_LO_DS: | |
411e1bfb AM |
5072 | dogot: |
5073 | { | |
5074 | struct got_entry *ent; | |
5075 | ||
58ac9f71 AM |
5076 | if (h != NULL) |
5077 | ent = h->got.glist; | |
411e1bfb AM |
5078 | else |
5079 | ent = local_got_ents[r_symndx]; | |
5080 | ||
5081 | for (; ent != NULL; ent = ent->next) | |
5082 | if (ent->addend == rel->r_addend | |
e717da7e | 5083 | && ent->owner == abfd |
411e1bfb AM |
5084 | && ent->tls_type == tls_type) |
5085 | break; | |
5086 | if (ent == NULL) | |
5087 | abort (); | |
5088 | if (ent->got.refcount > 0) | |
5089 | ent->got.refcount -= 1; | |
5090 | } | |
a33d1f77 | 5091 | break; |
65f38f15 | 5092 | |
a33d1f77 AM |
5093 | case R_PPC64_PLT16_HA: |
5094 | case R_PPC64_PLT16_HI: | |
5095 | case R_PPC64_PLT16_LO: | |
5096 | case R_PPC64_PLT32: | |
5097 | case R_PPC64_PLT64: | |
721956f4 AM |
5098 | case R_PPC64_REL14: |
5099 | case R_PPC64_REL14_BRNTAKEN: | |
5100 | case R_PPC64_REL14_BRTAKEN: | |
5d1634d7 | 5101 | case R_PPC64_REL24: |
58ac9f71 | 5102 | if (h != NULL) |
5d1634d7 | 5103 | { |
411e1bfb AM |
5104 | struct plt_entry *ent; |
5105 | ||
411e1bfb AM |
5106 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) |
5107 | if (ent->addend == rel->r_addend) | |
5108 | break; | |
5109 | if (ent == NULL) | |
5110 | abort (); | |
5111 | if (ent->plt.refcount > 0) | |
5112 | ent->plt.refcount -= 1; | |
5d1634d7 | 5113 | } |
e86ce104 | 5114 | break; |
5d1634d7 | 5115 | |
a33d1f77 AM |
5116 | default: |
5117 | break; | |
5118 | } | |
5119 | } | |
b34976b6 | 5120 | return TRUE; |
5bd4f169 AM |
5121 | } |
5122 | ||
deb0e272 AM |
5123 | /* The maximum size of .sfpr. */ |
5124 | #define SFPR_MAX (218*4) | |
5125 | ||
5126 | struct sfpr_def_parms | |
5127 | { | |
699733f6 AM |
5128 | const char name[12]; |
5129 | unsigned char lo, hi; | |
deb0e272 AM |
5130 | bfd_byte * (*write_ent) (bfd *, bfd_byte *, int); |
5131 | bfd_byte * (*write_tail) (bfd *, bfd_byte *, int); | |
5132 | }; | |
5133 | ||
5134 | /* Auto-generate _save*, _rest* functions in .sfpr. */ | |
5135 | ||
5136 | static unsigned int | |
5137 | sfpr_define (struct bfd_link_info *info, const struct sfpr_def_parms *parm) | |
5138 | { | |
5139 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
5140 | unsigned int i; | |
5141 | size_t len = strlen (parm->name); | |
5142 | bfd_boolean writing = FALSE; | |
699733f6 | 5143 | char sym[16]; |
deb0e272 AM |
5144 | |
5145 | memcpy (sym, parm->name, len); | |
5146 | sym[len + 2] = 0; | |
5147 | ||
5148 | for (i = parm->lo; i <= parm->hi; i++) | |
5149 | { | |
5150 | struct elf_link_hash_entry *h; | |
5151 | ||
5152 | sym[len + 0] = i / 10 + '0'; | |
5153 | sym[len + 1] = i % 10 + '0'; | |
5154 | h = elf_link_hash_lookup (&htab->elf, sym, FALSE, FALSE, TRUE); | |
5155 | if (h != NULL | |
f5385ebf | 5156 | && !h->def_regular) |
deb0e272 AM |
5157 | { |
5158 | h->root.type = bfd_link_hash_defined; | |
5159 | h->root.u.def.section = htab->sfpr; | |
5160 | h->root.u.def.value = htab->sfpr->size; | |
5161 | h->type = STT_FUNC; | |
f5385ebf | 5162 | h->def_regular = 1; |
deb0e272 AM |
5163 | _bfd_elf_link_hash_hide_symbol (info, h, TRUE); |
5164 | writing = TRUE; | |
5165 | if (htab->sfpr->contents == NULL) | |
5166 | { | |
5167 | htab->sfpr->contents = bfd_alloc (htab->elf.dynobj, SFPR_MAX); | |
5168 | if (htab->sfpr->contents == NULL) | |
5169 | return FALSE; | |
5170 | } | |
5171 | } | |
5172 | if (writing) | |
5173 | { | |
5174 | bfd_byte *p = htab->sfpr->contents + htab->sfpr->size; | |
5175 | if (i != parm->hi) | |
5176 | p = (*parm->write_ent) (htab->elf.dynobj, p, i); | |
5177 | else | |
5178 | p = (*parm->write_tail) (htab->elf.dynobj, p, i); | |
5179 | htab->sfpr->size = p - htab->sfpr->contents; | |
5180 | } | |
5181 | } | |
5182 | ||
5183 | return TRUE; | |
5184 | } | |
5185 | ||
5186 | static bfd_byte * | |
5187 | savegpr0 (bfd *abfd, bfd_byte *p, int r) | |
5188 | { | |
5189 | bfd_put_32 (abfd, STD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
5190 | return p + 4; | |
5191 | } | |
5192 | ||
5193 | static bfd_byte * | |
5194 | savegpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
5195 | { | |
5196 | p = savegpr0 (abfd, p, r); | |
5197 | bfd_put_32 (abfd, STD_R0_0R1 + 16, p); | |
5198 | p = p + 4; | |
5199 | bfd_put_32 (abfd, BLR, p); | |
5200 | return p + 4; | |
5201 | } | |
5202 | ||
5203 | static bfd_byte * | |
5204 | restgpr0 (bfd *abfd, bfd_byte *p, int r) | |
5205 | { | |
5206 | bfd_put_32 (abfd, LD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
5207 | return p + 4; | |
5208 | } | |
5209 | ||
5210 | static bfd_byte * | |
5211 | restgpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
5212 | { | |
5213 | bfd_put_32 (abfd, LD_R0_0R1 + 16, p); | |
5214 | p = p + 4; | |
5215 | p = restgpr0 (abfd, p, r); | |
5216 | bfd_put_32 (abfd, MTLR_R0, p); | |
5217 | p = p + 4; | |
5218 | if (r == 29) | |
5219 | { | |
5220 | p = restgpr0 (abfd, p, 30); | |
5221 | p = restgpr0 (abfd, p, 31); | |
5222 | } | |
5223 | bfd_put_32 (abfd, BLR, p); | |
5224 | return p + 4; | |
5225 | } | |
5226 | ||
5227 | static bfd_byte * | |
5228 | savegpr1 (bfd *abfd, bfd_byte *p, int r) | |
5229 | { | |
5230 | bfd_put_32 (abfd, STD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
5231 | return p + 4; | |
5232 | } | |
5233 | ||
5234 | static bfd_byte * | |
5235 | savegpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
5236 | { | |
5237 | p = savegpr1 (abfd, p, r); | |
5238 | bfd_put_32 (abfd, BLR, p); | |
5239 | return p + 4; | |
5240 | } | |
5241 | ||
5242 | static bfd_byte * | |
5243 | restgpr1 (bfd *abfd, bfd_byte *p, int r) | |
5244 | { | |
5245 | bfd_put_32 (abfd, LD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
5246 | return p + 4; | |
5247 | } | |
5248 | ||
5249 | static bfd_byte * | |
5250 | restgpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
5251 | { | |
5252 | p = restgpr1 (abfd, p, r); | |
5253 | bfd_put_32 (abfd, BLR, p); | |
5254 | return p + 4; | |
5255 | } | |
5256 | ||
5257 | static bfd_byte * | |
5258 | savefpr (bfd *abfd, bfd_byte *p, int r) | |
5259 | { | |
5260 | bfd_put_32 (abfd, STFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
5261 | return p + 4; | |
5262 | } | |
5263 | ||
5264 | static bfd_byte * | |
5265 | savefpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
5266 | { | |
5267 | p = savefpr (abfd, p, r); | |
5268 | bfd_put_32 (abfd, STD_R0_0R1 + 16, p); | |
5269 | p = p + 4; | |
5270 | bfd_put_32 (abfd, BLR, p); | |
5271 | return p + 4; | |
5272 | } | |
5273 | ||
5274 | static bfd_byte * | |
5275 | restfpr (bfd *abfd, bfd_byte *p, int r) | |
5276 | { | |
5277 | bfd_put_32 (abfd, LFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
5278 | return p + 4; | |
5279 | } | |
5280 | ||
5281 | static bfd_byte * | |
5282 | restfpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
5283 | { | |
5284 | bfd_put_32 (abfd, LD_R0_0R1 + 16, p); | |
5285 | p = p + 4; | |
5286 | p = restfpr (abfd, p, r); | |
5287 | bfd_put_32 (abfd, MTLR_R0, p); | |
5288 | p = p + 4; | |
5289 | if (r == 29) | |
5290 | { | |
5291 | p = restfpr (abfd, p, 30); | |
5292 | p = restfpr (abfd, p, 31); | |
5293 | } | |
5294 | bfd_put_32 (abfd, BLR, p); | |
5295 | return p + 4; | |
5296 | } | |
5297 | ||
5298 | static bfd_byte * | |
5299 | savefpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
5300 | { | |
5301 | p = savefpr (abfd, p, r); | |
5302 | bfd_put_32 (abfd, BLR, p); | |
5303 | return p + 4; | |
5304 | } | |
5305 | ||
5306 | static bfd_byte * | |
5307 | restfpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
5308 | { | |
5309 | p = restfpr (abfd, p, r); | |
5310 | bfd_put_32 (abfd, BLR, p); | |
5311 | return p + 4; | |
5312 | } | |
5313 | ||
5314 | static bfd_byte * | |
5315 | savevr (bfd *abfd, bfd_byte *p, int r) | |
5316 | { | |
5317 | bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p); | |
5318 | p = p + 4; | |
5319 | bfd_put_32 (abfd, STVX_VR0_R12_R0 + (r << 21), p); | |
5320 | return p + 4; | |
5321 | } | |
5322 | ||
5323 | static bfd_byte * | |
5324 | savevr_tail (bfd *abfd, bfd_byte *p, int r) | |
5325 | { | |
5326 | p = savevr (abfd, p, r); | |
5327 | bfd_put_32 (abfd, BLR, p); | |
5328 | return p + 4; | |
5329 | } | |
5330 | ||
5331 | static bfd_byte * | |
5332 | restvr (bfd *abfd, bfd_byte *p, int r) | |
5333 | { | |
5334 | bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p); | |
5335 | p = p + 4; | |
5336 | bfd_put_32 (abfd, LVX_VR0_R12_R0 + (r << 21), p); | |
5337 | return p + 4; | |
5338 | } | |
5339 | ||
5340 | static bfd_byte * | |
5341 | restvr_tail (bfd *abfd, bfd_byte *p, int r) | |
5342 | { | |
5343 | p = restvr (abfd, p, r); | |
5344 | bfd_put_32 (abfd, BLR, p); | |
5345 | return p + 4; | |
5346 | } | |
5347 | ||
e86ce104 AM |
5348 | /* Called via elf_link_hash_traverse to transfer dynamic linking |
5349 | information on function code symbol entries to their corresponding | |
5350 | function descriptor symbol entries. */ | |
deb0e272 | 5351 | |
b34976b6 | 5352 | static bfd_boolean |
4ce794b7 | 5353 | func_desc_adjust (struct elf_link_hash_entry *h, void *inf) |
5bd4f169 | 5354 | { |
e86ce104 | 5355 | struct bfd_link_info *info; |
65f38f15 | 5356 | struct ppc_link_hash_table *htab; |
411e1bfb | 5357 | struct plt_entry *ent; |
50bc7936 AM |
5358 | struct ppc_link_hash_entry *fh; |
5359 | struct ppc_link_hash_entry *fdh; | |
5360 | bfd_boolean force_local; | |
5bd4f169 | 5361 | |
50bc7936 AM |
5362 | fh = (struct ppc_link_hash_entry *) h; |
5363 | if (fh->elf.root.type == bfd_link_hash_indirect) | |
b34976b6 | 5364 | return TRUE; |
e86ce104 | 5365 | |
50bc7936 AM |
5366 | if (fh->elf.root.type == bfd_link_hash_warning) |
5367 | fh = (struct ppc_link_hash_entry *) fh->elf.root.u.i.link; | |
e92d460e | 5368 | |
4ce794b7 | 5369 | info = inf; |
65f38f15 | 5370 | htab = ppc_hash_table (info); |
5bd4f169 | 5371 | |
c09bdfe5 AM |
5372 | /* Resolve undefined references to dot-symbols as the value |
5373 | in the function descriptor, if we have one in a regular object. | |
5374 | This is to satisfy cases like ".quad .foo". Calls to functions | |
5375 | in dynamic objects are handled elsewhere. */ | |
5376 | if (fh->elf.root.type == bfd_link_hash_undefweak | |
5377 | && fh->was_undefined | |
5378 | && (fh->oh->elf.root.type == bfd_link_hash_defined | |
5379 | || fh->oh->elf.root.type == bfd_link_hash_defweak) | |
5380 | && get_opd_info (fh->oh->elf.root.u.def.section) != NULL | |
5381 | && opd_entry_value (fh->oh->elf.root.u.def.section, | |
5382 | fh->oh->elf.root.u.def.value, | |
5383 | &fh->elf.root.u.def.section, | |
5384 | &fh->elf.root.u.def.value) != (bfd_vma) -1) | |
5385 | { | |
5386 | fh->elf.root.type = fh->oh->elf.root.type; | |
f5385ebf | 5387 | fh->elf.forced_local = 1; |
c09bdfe5 AM |
5388 | } |
5389 | ||
e86ce104 AM |
5390 | /* If this is a function code symbol, transfer dynamic linking |
5391 | information to the function descriptor symbol. */ | |
50bc7936 | 5392 | if (!fh->is_func) |
b34976b6 | 5393 | return TRUE; |
e86ce104 | 5394 | |
50bc7936 | 5395 | for (ent = fh->elf.plt.plist; ent != NULL; ent = ent->next) |
411e1bfb AM |
5396 | if (ent->plt.refcount > 0) |
5397 | break; | |
50bc7936 AM |
5398 | if (ent == NULL |
5399 | || fh->elf.root.root.string[0] != '.' | |
5400 | || fh->elf.root.root.string[1] == '\0') | |
5401 | return TRUE; | |
5bd4f169 | 5402 | |
50bc7936 AM |
5403 | /* Find the corresponding function descriptor symbol. Create it |
5404 | as undefined if necessary. */ | |
5bd4f169 | 5405 | |
50bc7936 AM |
5406 | fdh = get_fdh (fh, htab); |
5407 | if (fdh != NULL) | |
5408 | while (fdh->elf.root.type == bfd_link_hash_indirect | |
5409 | || fdh->elf.root.type == bfd_link_hash_warning) | |
5410 | fdh = (struct ppc_link_hash_entry *) fdh->elf.root.u.i.link; | |
5bd4f169 | 5411 | |
50bc7936 AM |
5412 | if (fdh == NULL |
5413 | && info->shared | |
5414 | && (fh->elf.root.type == bfd_link_hash_undefined | |
5415 | || fh->elf.root.type == bfd_link_hash_undefweak)) | |
5416 | { | |
bb700d78 | 5417 | flagword flags = 0; |
50bc7936 | 5418 | if (fh->elf.root.type == bfd_link_hash_undefweak) |
bb700d78 AM |
5419 | flags = BSF_WEAK; |
5420 | fdh = make_fdh (info, fh, flags); | |
5421 | if (fdh == NULL) | |
5422 | return FALSE; | |
50bc7936 | 5423 | } |
648cca2c | 5424 | |
50bc7936 | 5425 | if (fdh != NULL |
f5385ebf | 5426 | && !fdh->elf.forced_local |
50bc7936 | 5427 | && (info->shared |
f5385ebf AM |
5428 | || fdh->elf.def_dynamic |
5429 | || fdh->elf.ref_dynamic | |
50bc7936 AM |
5430 | || (fdh->elf.root.type == bfd_link_hash_undefweak |
5431 | && ELF_ST_VISIBILITY (fdh->elf.other) == STV_DEFAULT))) | |
5432 | { | |
5433 | if (fdh->elf.dynindx == -1) | |
c152c796 | 5434 | if (! bfd_elf_link_record_dynamic_symbol (info, &fdh->elf)) |
50bc7936 | 5435 | return FALSE; |
f5385ebf AM |
5436 | fdh->elf.ref_regular |= fh->elf.ref_regular; |
5437 | fdh->elf.ref_dynamic |= fh->elf.ref_dynamic; | |
5438 | fdh->elf.ref_regular_nonweak |= fh->elf.ref_regular_nonweak; | |
5439 | fdh->elf.non_got_ref |= fh->elf.non_got_ref; | |
50bc7936 | 5440 | if (ELF_ST_VISIBILITY (fh->elf.other) == STV_DEFAULT) |
e86ce104 | 5441 | { |
8387904d AM |
5442 | struct plt_entry **ep = &fdh->elf.plt.plist; |
5443 | while (*ep != NULL) | |
5444 | ep = &(*ep)->next; | |
5445 | *ep = fh->elf.plt.plist; | |
5446 | fh->elf.plt.plist = NULL; | |
f5385ebf | 5447 | fdh->elf.needs_plt = 1; |
e86ce104 | 5448 | } |
50bc7936 | 5449 | fdh->is_func_descriptor = 1; |
34814b9f AM |
5450 | fdh->oh = fh; |
5451 | fh->oh = fdh; | |
e86ce104 AM |
5452 | } |
5453 | ||
50bc7936 AM |
5454 | /* Now that the info is on the function descriptor, clear the |
5455 | function code sym info. Any function code syms for which we | |
5456 | don't have a definition in a regular file, we force local. | |
5457 | This prevents a shared library from exporting syms that have | |
5458 | been imported from another library. Function code syms that | |
5459 | are really in the library we must leave global to prevent the | |
5460 | linker dragging in a definition from a static library. */ | |
5461 | force_local | |
5462 | = (info->shared | |
f5385ebf | 5463 | && (!fh->elf.def_regular |
50bc7936 | 5464 | || fdh == NULL |
f5385ebf AM |
5465 | || !fdh->elf.def_regular |
5466 | || fdh->elf.forced_local)); | |
50bc7936 AM |
5467 | _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local); |
5468 | ||
b34976b6 | 5469 | return TRUE; |
e86ce104 | 5470 | } |
40b8271b | 5471 | |
e86ce104 | 5472 | /* Called near the start of bfd_elf_size_dynamic_sections. We use |
82bd7b59 AM |
5473 | this hook to a) provide some gcc support functions, and b) transfer |
5474 | dynamic linking information gathered so far on function code symbol | |
5475 | entries, to their corresponding function descriptor symbol entries. */ | |
deb0e272 | 5476 | |
b34976b6 | 5477 | static bfd_boolean |
4ce794b7 AM |
5478 | ppc64_elf_func_desc_adjust (bfd *obfd ATTRIBUTE_UNUSED, |
5479 | struct bfd_link_info *info) | |
e86ce104 AM |
5480 | { |
5481 | struct ppc_link_hash_table *htab; | |
82bd7b59 | 5482 | unsigned int i; |
deb0e272 AM |
5483 | const struct sfpr_def_parms funcs[] = |
5484 | { | |
5485 | { "_savegpr0_", 14, 31, savegpr0, savegpr0_tail }, | |
5486 | { "_restgpr0_", 14, 29, restgpr0, restgpr0_tail }, | |
5487 | { "_restgpr0_", 30, 31, restgpr0, restgpr0_tail }, | |
5488 | { "_savegpr1_", 14, 31, savegpr1, savegpr1_tail }, | |
5489 | { "_restgpr1_", 14, 31, restgpr1, restgpr1_tail }, | |
5490 | { "_savefpr_", 14, 31, savefpr, savefpr0_tail }, | |
5491 | { "_restfpr_", 14, 29, restfpr, restfpr0_tail }, | |
5492 | { "_restfpr_", 30, 31, restfpr, restfpr0_tail }, | |
5493 | { "._savef", 14, 31, savefpr, savefpr1_tail }, | |
5494 | { "._restf", 14, 31, restfpr, restfpr1_tail }, | |
5495 | { "_savevr_", 20, 31, savevr, savevr_tail }, | |
5496 | { "_restvr_", 20, 31, restvr, restvr_tail } | |
5497 | }; | |
e86ce104 AM |
5498 | |
5499 | htab = ppc_hash_table (info); | |
82bd7b59 AM |
5500 | if (htab->sfpr == NULL) |
5501 | /* We don't have any relocs. */ | |
b34976b6 | 5502 | return TRUE; |
82bd7b59 | 5503 | |
deb0e272 AM |
5504 | /* Provide any missing _save* and _rest* functions. */ |
5505 | htab->sfpr->size = 0; | |
5506 | for (i = 0; i < sizeof (funcs) / sizeof (funcs[0]); i++) | |
5507 | if (!sfpr_define (info, &funcs[i])) | |
5508 | return FALSE; | |
82bd7b59 | 5509 | |
4ce794b7 | 5510 | elf_link_hash_traverse (&htab->elf, func_desc_adjust, info); |
805fc799 | 5511 | |
eea6121a | 5512 | if (htab->sfpr->size == 0) |
deb0e272 | 5513 | _bfd_strip_section_from_output (info, htab->sfpr); |
82bd7b59 | 5514 | |
b34976b6 | 5515 | return TRUE; |
e86ce104 AM |
5516 | } |
5517 | ||
5518 | /* Adjust a symbol defined by a dynamic object and referenced by a | |
5519 | regular object. The current definition is in some section of the | |
5520 | dynamic object, but we're not including those sections. We have to | |
5521 | change the definition to something the rest of the link can | |
5522 | understand. */ | |
5523 | ||
b34976b6 | 5524 | static bfd_boolean |
4ce794b7 AM |
5525 | ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info *info, |
5526 | struct elf_link_hash_entry *h) | |
e86ce104 AM |
5527 | { |
5528 | struct ppc_link_hash_table *htab; | |
e86ce104 AM |
5529 | asection *s; |
5530 | unsigned int power_of_two; | |
5531 | ||
5532 | htab = ppc_hash_table (info); | |
5533 | ||
5534 | /* Deal with function syms. */ | |
5535 | if (h->type == STT_FUNC | |
f5385ebf | 5536 | || h->needs_plt) |
e86ce104 AM |
5537 | { |
5538 | /* Clear procedure linkage table information for any symbol that | |
5539 | won't need a .plt entry. */ | |
411e1bfb AM |
5540 | struct plt_entry *ent; |
5541 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) | |
5542 | if (ent->plt.refcount > 0) | |
5543 | break; | |
8387904d | 5544 | if (ent == NULL |
9c7a29a3 AM |
5545 | || SYMBOL_CALLS_LOCAL (info, h) |
5546 | || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT | |
5547 | && h->root.type == bfd_link_hash_undefweak)) | |
40b8271b | 5548 | { |
411e1bfb | 5549 | h->plt.plist = NULL; |
f5385ebf | 5550 | h->needs_plt = 0; |
40b8271b | 5551 | } |
5bd4f169 | 5552 | } |
bbd7ec4a | 5553 | else |
411e1bfb | 5554 | h->plt.plist = NULL; |
5bd4f169 AM |
5555 | |
5556 | /* If this is a weak symbol, and there is a real definition, the | |
5557 | processor independent code will have arranged for us to see the | |
5558 | real definition first, and we can just use the same value. */ | |
f6e332e6 | 5559 | if (h->u.weakdef != NULL) |
5bd4f169 | 5560 | { |
f6e332e6 AM |
5561 | BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined |
5562 | || h->u.weakdef->root.type == bfd_link_hash_defweak); | |
5563 | h->root.u.def.section = h->u.weakdef->root.u.def.section; | |
5564 | h->root.u.def.value = h->u.weakdef->root.u.def.value; | |
a23b6845 | 5565 | if (ELIMINATE_COPY_RELOCS) |
f6e332e6 | 5566 | h->non_got_ref = h->u.weakdef->non_got_ref; |
b34976b6 | 5567 | return TRUE; |
5bd4f169 AM |
5568 | } |
5569 | ||
5bd4f169 AM |
5570 | /* If we are creating a shared library, we must presume that the |
5571 | only references to the symbol are via the global offset table. | |
5572 | For such cases we need not do anything here; the relocations will | |
5573 | be handled correctly by relocate_section. */ | |
5574 | if (info->shared) | |
b34976b6 | 5575 | return TRUE; |
5bd4f169 | 5576 | |
65f38f15 AM |
5577 | /* If there are no references to this symbol that do not use the |
5578 | GOT, we don't need to generate a copy reloc. */ | |
f5385ebf | 5579 | if (!h->non_got_ref) |
b34976b6 | 5580 | return TRUE; |
65f38f15 | 5581 | |
f4656909 | 5582 | if (ELIMINATE_COPY_RELOCS) |
65f38f15 | 5583 | { |
f4656909 AM |
5584 | struct ppc_link_hash_entry * eh; |
5585 | struct ppc_dyn_relocs *p; | |
65f38f15 | 5586 | |
f4656909 AM |
5587 | eh = (struct ppc_link_hash_entry *) h; |
5588 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
5589 | { | |
5590 | s = p->sec->output_section; | |
5591 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
5592 | break; | |
5593 | } | |
5594 | ||
5595 | /* If we didn't find any dynamic relocs in read-only sections, then | |
5596 | we'll be keeping the dynamic relocs and avoiding the copy reloc. */ | |
5597 | if (p == NULL) | |
5598 | { | |
f5385ebf | 5599 | h->non_got_ref = 0; |
f4656909 AM |
5600 | return TRUE; |
5601 | } | |
65f38f15 AM |
5602 | } |
5603 | ||
5d35169e | 5604 | if (h->plt.plist != NULL) |
97b639ba AM |
5605 | { |
5606 | /* We should never get here, but unfortunately there are versions | |
5607 | of gcc out there that improperly (for this ABI) put initialized | |
5608 | function pointers, vtable refs and suchlike in read-only | |
5609 | sections. Allow them to proceed, but warn that this might | |
5610 | break at runtime. */ | |
5611 | (*_bfd_error_handler) | |
5612 | (_("copy reloc against `%s' requires lazy plt linking; " | |
5613 | "avoid setting LD_BIND_NOW=1 or upgrade gcc"), | |
5614 | h->root.root.string); | |
5615 | } | |
5d35169e AM |
5616 | |
5617 | /* This is a reference to a symbol defined by a dynamic object which | |
5618 | is not a function. */ | |
5619 | ||
5bd4f169 AM |
5620 | /* We must allocate the symbol in our .dynbss section, which will |
5621 | become part of the .bss section of the executable. There will be | |
5622 | an entry for this symbol in the .dynsym section. The dynamic | |
5623 | object will contain position independent code, so all references | |
5624 | from the dynamic object to this symbol will go through the global | |
5625 | offset table. The dynamic linker will use the .dynsym entry to | |
5626 | determine the address it must put in the global offset table, so | |
5627 | both the dynamic object and the regular object will refer to the | |
5628 | same memory location for the variable. */ | |
5bd4f169 | 5629 | |
04c9666a AM |
5630 | /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker |
5631 | to copy the initial value out of the dynamic object and into the | |
5bd4f169 AM |
5632 | runtime process image. We need to remember the offset into the |
5633 | .rela.bss section we are going to use. */ | |
5634 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0) | |
5635 | { | |
eea6121a | 5636 | htab->relbss->size += sizeof (Elf64_External_Rela); |
f5385ebf | 5637 | h->needs_copy = 1; |
5bd4f169 AM |
5638 | } |
5639 | ||
5640 | /* We need to figure out the alignment required for this symbol. I | |
5641 | have no idea how ELF linkers handle this. */ | |
5642 | power_of_two = bfd_log2 (h->size); | |
5643 | if (power_of_two > 4) | |
5644 | power_of_two = 4; | |
5645 | ||
5646 | /* Apply the required alignment. */ | |
4ce794b7 | 5647 | s = htab->dynbss; |
eea6121a | 5648 | s->size = BFD_ALIGN (s->size, (bfd_size_type) (1 << power_of_two)); |
65f38f15 | 5649 | if (power_of_two > bfd_get_section_alignment (htab->elf.dynobj, s)) |
5bd4f169 | 5650 | { |
65f38f15 | 5651 | if (! bfd_set_section_alignment (htab->elf.dynobj, s, power_of_two)) |
b34976b6 | 5652 | return FALSE; |
5bd4f169 AM |
5653 | } |
5654 | ||
5655 | /* Define the symbol as being at this point in the section. */ | |
5656 | h->root.u.def.section = s; | |
eea6121a | 5657 | h->root.u.def.value = s->size; |
5bd4f169 AM |
5658 | |
5659 | /* Increment the section size to make room for the symbol. */ | |
eea6121a | 5660 | s->size += h->size; |
5bd4f169 | 5661 | |
b34976b6 | 5662 | return TRUE; |
5bd4f169 AM |
5663 | } |
5664 | ||
e86ce104 AM |
5665 | /* If given a function descriptor symbol, hide both the function code |
5666 | sym and the descriptor. */ | |
5667 | static void | |
4ce794b7 AM |
5668 | ppc64_elf_hide_symbol (struct bfd_link_info *info, |
5669 | struct elf_link_hash_entry *h, | |
5670 | bfd_boolean force_local) | |
e86ce104 | 5671 | { |
34814b9f | 5672 | struct ppc_link_hash_entry *eh; |
e86ce104 AM |
5673 | _bfd_elf_link_hash_hide_symbol (info, h, force_local); |
5674 | ||
34814b9f AM |
5675 | eh = (struct ppc_link_hash_entry *) h; |
5676 | if (eh->is_func_descriptor) | |
e86ce104 | 5677 | { |
34814b9f | 5678 | struct ppc_link_hash_entry *fh = eh->oh; |
e86ce104 | 5679 | |
721956f4 | 5680 | if (fh == NULL) |
d1329ca3 AM |
5681 | { |
5682 | const char *p, *q; | |
5683 | struct ppc_link_hash_table *htab; | |
5684 | char save; | |
5685 | ||
5686 | /* We aren't supposed to use alloca in BFD because on | |
5687 | systems which do not have alloca the version in libiberty | |
5688 | calls xmalloc, which might cause the program to crash | |
5689 | when it runs out of memory. This function doesn't have a | |
5690 | return status, so there's no way to gracefully return an | |
5691 | error. So cheat. We know that string[-1] can be safely | |
34814b9f AM |
5692 | accessed; It's either a string in an ELF string table, |
5693 | or allocated in an objalloc structure. */ | |
d1329ca3 | 5694 | |
34814b9f | 5695 | p = eh->elf.root.root.string - 1; |
d1329ca3 AM |
5696 | save = *p; |
5697 | *(char *) p = '.'; | |
5698 | htab = ppc_hash_table (info); | |
34814b9f AM |
5699 | fh = (struct ppc_link_hash_entry *) |
5700 | elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE); | |
d1329ca3 AM |
5701 | *(char *) p = save; |
5702 | ||
5703 | /* Unfortunately, if it so happens that the string we were | |
5704 | looking for was allocated immediately before this string, | |
5705 | then we overwrote the string terminator. That's the only | |
5706 | reason the lookup should fail. */ | |
5707 | if (fh == NULL) | |
5708 | { | |
34814b9f AM |
5709 | q = eh->elf.root.root.string + strlen (eh->elf.root.root.string); |
5710 | while (q >= eh->elf.root.root.string && *q == *p) | |
d1329ca3 | 5711 | --q, --p; |
34814b9f AM |
5712 | if (q < eh->elf.root.root.string && *p == '.') |
5713 | fh = (struct ppc_link_hash_entry *) | |
5714 | elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE); | |
d1329ca3 AM |
5715 | } |
5716 | if (fh != NULL) | |
5717 | { | |
34814b9f AM |
5718 | eh->oh = fh; |
5719 | fh->oh = eh; | |
d1329ca3 AM |
5720 | } |
5721 | } | |
e86ce104 | 5722 | if (fh != NULL) |
34814b9f | 5723 | _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local); |
e86ce104 AM |
5724 | } |
5725 | } | |
5726 | ||
411e1bfb | 5727 | static bfd_boolean |
8843416a AM |
5728 | get_sym_h (struct elf_link_hash_entry **hp, |
5729 | Elf_Internal_Sym **symp, | |
5730 | asection **symsecp, | |
5731 | char **tls_maskp, | |
5732 | Elf_Internal_Sym **locsymsp, | |
5733 | unsigned long r_symndx, | |
5734 | bfd *ibfd) | |
411e1bfb AM |
5735 | { |
5736 | Elf_Internal_Shdr *symtab_hdr = &elf_tdata (ibfd)->symtab_hdr; | |
5737 | ||
5738 | if (r_symndx >= symtab_hdr->sh_info) | |
5739 | { | |
5740 | struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd); | |
5741 | struct elf_link_hash_entry *h; | |
5742 | ||
5743 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
5744 | while (h->root.type == bfd_link_hash_indirect | |
5745 | || h->root.type == bfd_link_hash_warning) | |
5746 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
5747 | ||
5748 | if (hp != NULL) | |
5749 | *hp = h; | |
5750 | ||
5751 | if (symp != NULL) | |
5752 | *symp = NULL; | |
5753 | ||
5754 | if (symsecp != NULL) | |
5755 | { | |
5756 | asection *symsec = NULL; | |
5757 | if (h->root.type == bfd_link_hash_defined | |
5758 | || h->root.type == bfd_link_hash_defweak) | |
5759 | symsec = h->root.u.def.section; | |
5760 | *symsecp = symsec; | |
5761 | } | |
5762 | ||
e7b938ca | 5763 | if (tls_maskp != NULL) |
411e1bfb AM |
5764 | { |
5765 | struct ppc_link_hash_entry *eh; | |
5766 | ||
5767 | eh = (struct ppc_link_hash_entry *) h; | |
e7b938ca | 5768 | *tls_maskp = &eh->tls_mask; |
411e1bfb AM |
5769 | } |
5770 | } | |
5771 | else | |
5772 | { | |
5773 | Elf_Internal_Sym *sym; | |
5774 | Elf_Internal_Sym *locsyms = *locsymsp; | |
5775 | ||
5776 | if (locsyms == NULL) | |
5777 | { | |
5778 | locsyms = (Elf_Internal_Sym *) symtab_hdr->contents; | |
5779 | if (locsyms == NULL) | |
5780 | locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr, | |
5781 | symtab_hdr->sh_info, | |
5782 | 0, NULL, NULL, NULL); | |
5783 | if (locsyms == NULL) | |
5784 | return FALSE; | |
5785 | *locsymsp = locsyms; | |
5786 | } | |
5787 | sym = locsyms + r_symndx; | |
5788 | ||
5789 | if (hp != NULL) | |
5790 | *hp = NULL; | |
5791 | ||
5792 | if (symp != NULL) | |
5793 | *symp = sym; | |
5794 | ||
5795 | if (symsecp != NULL) | |
5796 | { | |
5797 | asection *symsec = NULL; | |
5798 | if ((sym->st_shndx != SHN_UNDEF | |
5799 | && sym->st_shndx < SHN_LORESERVE) | |
5800 | || sym->st_shndx > SHN_HIRESERVE) | |
5801 | symsec = bfd_section_from_elf_index (ibfd, sym->st_shndx); | |
5802 | *symsecp = symsec; | |
5803 | } | |
5804 | ||
e7b938ca | 5805 | if (tls_maskp != NULL) |
411e1bfb AM |
5806 | { |
5807 | struct got_entry **lgot_ents; | |
e7b938ca | 5808 | char *tls_mask; |
411e1bfb | 5809 | |
e7b938ca | 5810 | tls_mask = NULL; |
411e1bfb AM |
5811 | lgot_ents = elf_local_got_ents (ibfd); |
5812 | if (lgot_ents != NULL) | |
5813 | { | |
e7b938ca AM |
5814 | char *lgot_masks = (char *) (lgot_ents + symtab_hdr->sh_info); |
5815 | tls_mask = &lgot_masks[r_symndx]; | |
411e1bfb | 5816 | } |
e7b938ca | 5817 | *tls_maskp = tls_mask; |
411e1bfb AM |
5818 | } |
5819 | } | |
5820 | return TRUE; | |
5821 | } | |
5822 | ||
e7b938ca | 5823 | /* Returns TLS_MASKP for the given REL symbol. Function return is 0 on |
951fd09b | 5824 | error, 2 on a toc GD type suitable for optimization, 3 on a toc LD |
ad8e1ba5 | 5825 | type suitable for optimization, and 1 otherwise. */ |
951fd09b AM |
5826 | |
5827 | static int | |
0d4792f7 AM |
5828 | get_tls_mask (char **tls_maskp, unsigned long *toc_symndx, |
5829 | Elf_Internal_Sym **locsymsp, | |
4ce794b7 | 5830 | const Elf_Internal_Rela *rel, bfd *ibfd) |
411e1bfb AM |
5831 | { |
5832 | unsigned long r_symndx; | |
0d4792f7 | 5833 | int next_r; |
411e1bfb AM |
5834 | struct elf_link_hash_entry *h; |
5835 | Elf_Internal_Sym *sym; | |
5836 | asection *sec; | |
5837 | bfd_vma off; | |
5838 | ||
5839 | r_symndx = ELF64_R_SYM (rel->r_info); | |
e7b938ca | 5840 | if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd)) |
951fd09b | 5841 | return 0; |
411e1bfb | 5842 | |
e7b938ca | 5843 | if ((*tls_maskp != NULL && **tls_maskp != 0) |
411e1bfb AM |
5844 | || sec == NULL |
5845 | || ppc64_elf_section_data (sec)->t_symndx == NULL) | |
951fd09b | 5846 | return 1; |
411e1bfb AM |
5847 | |
5848 | /* Look inside a TOC section too. */ | |
5849 | if (h != NULL) | |
5850 | { | |
5851 | BFD_ASSERT (h->root.type == bfd_link_hash_defined); | |
5852 | off = h->root.u.def.value; | |
5853 | } | |
5854 | else | |
5855 | off = sym->st_value; | |
5856 | off += rel->r_addend; | |
5857 | BFD_ASSERT (off % 8 == 0); | |
5858 | r_symndx = ppc64_elf_section_data (sec)->t_symndx[off / 8]; | |
951fd09b | 5859 | next_r = ppc64_elf_section_data (sec)->t_symndx[off / 8 + 1]; |
e7b938ca | 5860 | if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd)) |
951fd09b | 5861 | return 0; |
0d4792f7 AM |
5862 | if (toc_symndx != NULL) |
5863 | *toc_symndx = r_symndx; | |
5864 | if ((h == NULL | |
5865 | || ((h->root.type == bfd_link_hash_defined | |
5866 | || h->root.type == bfd_link_hash_defweak) | |
f5385ebf | 5867 | && !h->def_dynamic)) |
0d4792f7 AM |
5868 | && (next_r == -1 || next_r == -2)) |
5869 | return 1 - next_r; | |
951fd09b | 5870 | return 1; |
411e1bfb AM |
5871 | } |
5872 | ||
754021d0 | 5873 | /* Adjust all global syms defined in opd sections. In gcc generated |
8387904d | 5874 | code for the old ABI, these will already have been done. */ |
754021d0 AM |
5875 | |
5876 | static bfd_boolean | |
5877 | adjust_opd_syms (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED) | |
5878 | { | |
5879 | struct ppc_link_hash_entry *eh; | |
5880 | asection *sym_sec; | |
5881 | long *opd_adjust; | |
5882 | ||
5883 | if (h->root.type == bfd_link_hash_indirect) | |
5884 | return TRUE; | |
5885 | ||
5886 | if (h->root.type == bfd_link_hash_warning) | |
5887 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
5888 | ||
5889 | if (h->root.type != bfd_link_hash_defined | |
5890 | && h->root.type != bfd_link_hash_defweak) | |
5891 | return TRUE; | |
5892 | ||
5893 | eh = (struct ppc_link_hash_entry *) h; | |
5894 | if (eh->adjust_done) | |
5895 | return TRUE; | |
5896 | ||
5897 | sym_sec = eh->elf.root.u.def.section; | |
4025353c AM |
5898 | opd_adjust = get_opd_info (sym_sec); |
5899 | if (opd_adjust != NULL) | |
754021d0 | 5900 | { |
3f764659 | 5901 | long adjust = opd_adjust[eh->elf.root.u.def.value / 8]; |
4025353c AM |
5902 | if (adjust == -1) |
5903 | { | |
5904 | /* This entry has been deleted. */ | |
81688140 AM |
5905 | asection *dsec = ppc64_elf_tdata (sym_sec->owner)->deleted_section; |
5906 | if (dsec == NULL) | |
5907 | { | |
5908 | for (dsec = sym_sec->owner->sections; dsec; dsec = dsec->next) | |
5909 | if (elf_discarded_section (dsec)) | |
5910 | { | |
5911 | ppc64_elf_tdata (sym_sec->owner)->deleted_section = dsec; | |
5912 | break; | |
5913 | } | |
5914 | } | |
4025353c | 5915 | eh->elf.root.u.def.value = 0; |
81688140 | 5916 | eh->elf.root.u.def.section = dsec; |
4025353c AM |
5917 | } |
5918 | else | |
5919 | eh->elf.root.u.def.value += adjust; | |
754021d0 AM |
5920 | eh->adjust_done = 1; |
5921 | } | |
5922 | return TRUE; | |
5923 | } | |
5924 | ||
5925 | /* Remove unused Official Procedure Descriptor entries. Currently we | |
5926 | only remove those associated with functions in discarded link-once | |
5927 | sections, or weakly defined functions that have been overridden. It | |
5928 | would be possible to remove many more entries for statically linked | |
5929 | applications. */ | |
5930 | ||
b34976b6 | 5931 | bfd_boolean |
3f764659 JJ |
5932 | ppc64_elf_edit_opd (bfd *obfd, struct bfd_link_info *info, |
5933 | bfd_boolean non_overlapping) | |
1e2f5b6e AM |
5934 | { |
5935 | bfd *ibfd; | |
754021d0 | 5936 | bfd_boolean some_edited = FALSE; |
3f764659 | 5937 | asection *need_pad = NULL; |
1e2f5b6e | 5938 | |
411e1bfb | 5939 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) |
1e2f5b6e AM |
5940 | { |
5941 | asection *sec; | |
5942 | Elf_Internal_Rela *relstart, *rel, *relend; | |
5943 | Elf_Internal_Shdr *symtab_hdr; | |
6cdc0ccc | 5944 | Elf_Internal_Sym *local_syms; |
1e2f5b6e AM |
5945 | struct elf_link_hash_entry **sym_hashes; |
5946 | bfd_vma offset; | |
d6fe2dc1 | 5947 | bfd_size_type amt; |
4025353c | 5948 | long *opd_adjust; |
3f764659 JJ |
5949 | bfd_boolean need_edit, add_aux_fields; |
5950 | bfd_size_type cnt_16b = 0; | |
1e2f5b6e AM |
5951 | |
5952 | sec = bfd_get_section_by_name (ibfd, ".opd"); | |
5953 | if (sec == NULL) | |
5954 | continue; | |
5955 | ||
3f764659 | 5956 | amt = sec->size * sizeof (long) / 8; |
4025353c AM |
5957 | opd_adjust = get_opd_info (sec); |
5958 | if (opd_adjust == NULL) | |
d6fe2dc1 | 5959 | { |
4b85d634 AM |
5960 | /* check_relocs hasn't been called. Must be a ld -r link |
5961 | or --just-symbols object. */ | |
4025353c AM |
5962 | opd_adjust = bfd_zalloc (obfd, amt); |
5963 | ppc64_elf_section_data (sec)->opd.adjust = opd_adjust; | |
d6fe2dc1 | 5964 | } |
4025353c | 5965 | memset (opd_adjust, 0, amt); |
1e2f5b6e | 5966 | |
4b85d634 AM |
5967 | if (sec->sec_info_type == ELF_INFO_TYPE_JUST_SYMS) |
5968 | continue; | |
5969 | ||
1e2f5b6e AM |
5970 | if (sec->output_section == bfd_abs_section_ptr) |
5971 | continue; | |
5972 | ||
5973 | /* Look through the section relocs. */ | |
5974 | if ((sec->flags & SEC_RELOC) == 0 || sec->reloc_count == 0) | |
5975 | continue; | |
5976 | ||
6cdc0ccc | 5977 | local_syms = NULL; |
1e2f5b6e AM |
5978 | symtab_hdr = &elf_tdata (ibfd)->symtab_hdr; |
5979 | sym_hashes = elf_sym_hashes (ibfd); | |
5980 | ||
5981 | /* Read the relocations. */ | |
4ce794b7 | 5982 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, |
45d6a902 | 5983 | info->keep_memory); |
1e2f5b6e | 5984 | if (relstart == NULL) |
b34976b6 | 5985 | return FALSE; |
1e2f5b6e AM |
5986 | |
5987 | /* First run through the relocs to check they are sane, and to | |
5988 | determine whether we need to edit this opd section. */ | |
b34976b6 | 5989 | need_edit = FALSE; |
3f764659 | 5990 | need_pad = sec; |
1e2f5b6e AM |
5991 | offset = 0; |
5992 | relend = relstart + sec->reloc_count; | |
50bc7936 | 5993 | for (rel = relstart; rel < relend; ) |
1e2f5b6e | 5994 | { |
04c9666a | 5995 | enum elf_ppc64_reloc_type r_type; |
1e2f5b6e AM |
5996 | unsigned long r_symndx; |
5997 | asection *sym_sec; | |
5998 | struct elf_link_hash_entry *h; | |
5999 | Elf_Internal_Sym *sym; | |
6000 | ||
3f764659 | 6001 | /* .opd contains a regular array of 16 or 24 byte entries. We're |
1e2f5b6e AM |
6002 | only interested in the reloc pointing to a function entry |
6003 | point. */ | |
50bc7936 AM |
6004 | if (rel->r_offset != offset |
6005 | || rel + 1 >= relend | |
6006 | || (rel + 1)->r_offset != offset + 8) | |
1e2f5b6e AM |
6007 | { |
6008 | /* If someone messes with .opd alignment then after a | |
6009 | "ld -r" we might have padding in the middle of .opd. | |
6010 | Also, there's nothing to prevent someone putting | |
6011 | something silly in .opd with the assembler. No .opd | |
b34976b6 | 6012 | optimization for them! */ |
3f764659 | 6013 | broken_opd: |
1e2f5b6e | 6014 | (*_bfd_error_handler) |
d003868e | 6015 | (_("%B: .opd is not a regular array of opd entries"), ibfd); |
b34976b6 | 6016 | need_edit = FALSE; |
1e2f5b6e AM |
6017 | break; |
6018 | } | |
6019 | ||
50bc7936 AM |
6020 | if ((r_type = ELF64_R_TYPE (rel->r_info)) != R_PPC64_ADDR64 |
6021 | || (r_type = ELF64_R_TYPE ((rel + 1)->r_info)) != R_PPC64_TOC) | |
6022 | { | |
6023 | (*_bfd_error_handler) | |
d003868e AM |
6024 | (_("%B: unexpected reloc type %u in .opd section"), |
6025 | ibfd, r_type); | |
50bc7936 AM |
6026 | need_edit = FALSE; |
6027 | break; | |
6028 | } | |
6029 | ||
1e2f5b6e | 6030 | r_symndx = ELF64_R_SYM (rel->r_info); |
411e1bfb AM |
6031 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, |
6032 | r_symndx, ibfd)) | |
50bc7936 | 6033 | goto error_ret; |
1e2f5b6e AM |
6034 | |
6035 | if (sym_sec == NULL || sym_sec->owner == NULL) | |
6036 | { | |
411e1bfb AM |
6037 | const char *sym_name; |
6038 | if (h != NULL) | |
6039 | sym_name = h->root.root.string; | |
6040 | else | |
be8dd2ca | 6041 | sym_name = bfd_elf_sym_name (ibfd, symtab_hdr, sym); |
411e1bfb | 6042 | |
1e2f5b6e | 6043 | (*_bfd_error_handler) |
d003868e AM |
6044 | (_("%B: undefined sym `%s' in .opd section"), |
6045 | ibfd, sym_name); | |
b34976b6 | 6046 | need_edit = FALSE; |
1e2f5b6e AM |
6047 | break; |
6048 | } | |
6049 | ||
51020317 AM |
6050 | /* opd entries are always for functions defined in the |
6051 | current input bfd. If the symbol isn't defined in the | |
6052 | input bfd, then we won't be using the function in this | |
6053 | bfd; It must be defined in a linkonce section in another | |
6054 | bfd, or is weak. It's also possible that we are | |
6055 | discarding the function due to a linker script /DISCARD/, | |
6056 | which we test for via the output_section. */ | |
6057 | if (sym_sec->owner != ibfd | |
6058 | || sym_sec->output_section == bfd_abs_section_ptr) | |
b34976b6 | 6059 | need_edit = TRUE; |
1e2f5b6e | 6060 | |
50bc7936 | 6061 | rel += 2; |
3f764659 JJ |
6062 | if (rel == relend |
6063 | || (rel + 1 == relend && rel->r_offset == offset + 16)) | |
6064 | { | |
6065 | if (sec->size == offset + 24) | |
6066 | { | |
6067 | need_pad = NULL; | |
6068 | break; | |
6069 | } | |
6070 | if (rel == relend && sec->size == offset + 16) | |
6071 | { | |
6072 | cnt_16b++; | |
6073 | break; | |
6074 | } | |
6075 | goto broken_opd; | |
6076 | } | |
6077 | ||
6078 | if (rel->r_offset == offset + 24) | |
6079 | offset += 24; | |
6080 | else if (rel->r_offset != offset + 16) | |
6081 | goto broken_opd; | |
6082 | else if (rel + 1 < relend | |
6083 | && ELF64_R_TYPE (rel[0].r_info) == R_PPC64_ADDR64 | |
6084 | && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOC) | |
6085 | { | |
6086 | offset += 16; | |
6087 | cnt_16b++; | |
6088 | } | |
6089 | else if (rel + 2 < relend | |
6090 | && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_ADDR64 | |
6091 | && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_TOC) | |
6092 | { | |
6093 | offset += 24; | |
6094 | rel += 1; | |
6095 | } | |
6096 | else | |
6097 | goto broken_opd; | |
1e2f5b6e AM |
6098 | } |
6099 | ||
3f764659 JJ |
6100 | add_aux_fields = non_overlapping && cnt_16b > 0; |
6101 | ||
6102 | if (need_edit || add_aux_fields) | |
1e2f5b6e AM |
6103 | { |
6104 | Elf_Internal_Rela *write_rel; | |
6105 | bfd_byte *rptr, *wptr; | |
3f764659 | 6106 | bfd_byte *new_contents = NULL; |
b34976b6 | 6107 | bfd_boolean skip; |
3f764659 | 6108 | long opd_ent_size; |
1e2f5b6e AM |
6109 | |
6110 | /* This seems a waste of time as input .opd sections are all | |
6111 | zeros as generated by gcc, but I suppose there's no reason | |
6112 | this will always be so. We might start putting something in | |
6113 | the third word of .opd entries. */ | |
6114 | if ((sec->flags & SEC_IN_MEMORY) == 0) | |
6115 | { | |
eea6121a AM |
6116 | bfd_byte *loc; |
6117 | if (!bfd_malloc_and_get_section (ibfd, sec, &loc)) | |
6cdc0ccc | 6118 | { |
eea6121a AM |
6119 | if (loc != NULL) |
6120 | free (loc); | |
50bc7936 | 6121 | error_ret: |
6cdc0ccc AM |
6122 | if (local_syms != NULL |
6123 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
6124 | free (local_syms); | |
6cdc0ccc AM |
6125 | if (elf_section_data (sec)->relocs != relstart) |
6126 | free (relstart); | |
b34976b6 | 6127 | return FALSE; |
6cdc0ccc | 6128 | } |
1e2f5b6e AM |
6129 | sec->contents = loc; |
6130 | sec->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS); | |
6131 | } | |
6132 | ||
6133 | elf_section_data (sec)->relocs = relstart; | |
6134 | ||
6135 | wptr = sec->contents; | |
6136 | rptr = sec->contents; | |
3f764659 JJ |
6137 | new_contents = sec->contents; |
6138 | ||
6139 | if (add_aux_fields) | |
6140 | { | |
6141 | new_contents = bfd_malloc (sec->size + cnt_16b * 8); | |
6142 | if (new_contents == NULL) | |
6143 | return FALSE; | |
6144 | need_pad = FALSE; | |
6145 | wptr = new_contents; | |
6146 | } | |
6147 | ||
1e2f5b6e | 6148 | write_rel = relstart; |
b34976b6 | 6149 | skip = FALSE; |
1e2f5b6e | 6150 | offset = 0; |
3f764659 | 6151 | opd_ent_size = 0; |
1e2f5b6e AM |
6152 | for (rel = relstart; rel < relend; rel++) |
6153 | { | |
50bc7936 AM |
6154 | unsigned long r_symndx; |
6155 | asection *sym_sec; | |
6156 | struct elf_link_hash_entry *h; | |
6157 | Elf_Internal_Sym *sym; | |
6158 | ||
6159 | r_symndx = ELF64_R_SYM (rel->r_info); | |
6160 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
d37c89e5 | 6161 | r_symndx, ibfd)) |
50bc7936 AM |
6162 | goto error_ret; |
6163 | ||
1e2f5b6e AM |
6164 | if (rel->r_offset == offset) |
6165 | { | |
50bc7936 | 6166 | struct ppc_link_hash_entry *fdh = NULL; |
3f764659 JJ |
6167 | |
6168 | /* See if the .opd entry is full 24 byte or | |
6169 | 16 byte (with fd_aux entry overlapped with next | |
6170 | fd_func). */ | |
6171 | opd_ent_size = 24; | |
6172 | if ((rel + 2 == relend && sec->size == offset + 16) | |
6173 | || (rel + 3 < relend | |
6174 | && rel[2].r_offset == offset + 16 | |
6175 | && rel[3].r_offset == offset + 24 | |
6176 | && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_ADDR64 | |
6177 | && ELF64_R_TYPE (rel[3].r_info) == R_PPC64_TOC)) | |
6178 | opd_ent_size = 16; | |
6179 | ||
4025353c AM |
6180 | if (h != NULL |
6181 | && h->root.root.string[0] == '.') | |
50bc7936 AM |
6182 | fdh = get_fdh ((struct ppc_link_hash_entry *) h, |
6183 | ppc_hash_table (info)); | |
1e2f5b6e | 6184 | |
51020317 AM |
6185 | skip = (sym_sec->owner != ibfd |
6186 | || sym_sec->output_section == bfd_abs_section_ptr); | |
a4aa0fb7 AM |
6187 | if (skip) |
6188 | { | |
4025353c | 6189 | if (fdh != NULL && sym_sec->owner == ibfd) |
a4aa0fb7 AM |
6190 | { |
6191 | /* Arrange for the function descriptor sym | |
6192 | to be dropped. */ | |
d6fe2dc1 AM |
6193 | fdh->elf.root.u.def.value = 0; |
6194 | fdh->elf.root.u.def.section = sym_sec; | |
a4aa0fb7 | 6195 | } |
3f764659 | 6196 | opd_adjust[rel->r_offset / 8] = -1; |
a4aa0fb7 AM |
6197 | } |
6198 | else | |
1e2f5b6e AM |
6199 | { |
6200 | /* We'll be keeping this opd entry. */ | |
6201 | ||
4025353c | 6202 | if (fdh != NULL) |
1e2f5b6e | 6203 | { |
754021d0 AM |
6204 | /* Redefine the function descriptor symbol to |
6205 | this location in the opd section. It is | |
6206 | necessary to update the value here rather | |
6207 | than using an array of adjustments as we do | |
6208 | for local symbols, because various places | |
6209 | in the generic ELF code use the value | |
6210 | stored in u.def.value. */ | |
3f764659 | 6211 | fdh->elf.root.u.def.value = wptr - new_contents; |
754021d0 | 6212 | fdh->adjust_done = 1; |
1e2f5b6e | 6213 | } |
754021d0 AM |
6214 | |
6215 | /* Local syms are a bit tricky. We could | |
6216 | tweak them as they can be cached, but | |
6217 | we'd need to look through the local syms | |
6218 | for the function descriptor sym which we | |
6219 | don't have at the moment. So keep an | |
6220 | array of adjustments. */ | |
3f764659 JJ |
6221 | opd_adjust[rel->r_offset / 8] |
6222 | = (wptr - new_contents) - (rptr - sec->contents); | |
1e2f5b6e AM |
6223 | |
6224 | if (wptr != rptr) | |
3f764659 JJ |
6225 | memcpy (wptr, rptr, opd_ent_size); |
6226 | wptr += opd_ent_size; | |
6227 | if (add_aux_fields && opd_ent_size == 16) | |
6228 | { | |
6229 | memset (wptr, '\0', 8); | |
6230 | wptr += 8; | |
6231 | } | |
1e2f5b6e | 6232 | } |
3f764659 JJ |
6233 | rptr += opd_ent_size; |
6234 | offset += opd_ent_size; | |
1e2f5b6e AM |
6235 | } |
6236 | ||
50bc7936 AM |
6237 | if (skip) |
6238 | { | |
6239 | BFD_ASSERT (MUST_BE_DYN_RELOC (ELF64_R_TYPE (rel->r_info))); | |
6240 | if (info->shared) | |
6241 | { | |
6242 | /* We won't be needing dynamic relocs here. */ | |
6243 | struct ppc_dyn_relocs **pp; | |
6244 | struct ppc_dyn_relocs *p; | |
6245 | ||
6246 | if (h != NULL) | |
6247 | pp = &((struct ppc_link_hash_entry *) h)->dyn_relocs; | |
6248 | else if (sym_sec != NULL) | |
6249 | pp = ((struct ppc_dyn_relocs **) | |
6250 | &elf_section_data (sym_sec)->local_dynrel); | |
6251 | else | |
6252 | pp = ((struct ppc_dyn_relocs **) | |
6253 | &elf_section_data (sec)->local_dynrel); | |
6254 | while ((p = *pp) != NULL) | |
6255 | { | |
6256 | if (p->sec == sec) | |
6257 | { | |
6258 | p->count -= 1; | |
6259 | if (p->count == 0) | |
d37c89e5 | 6260 | *pp = p->next; |
50bc7936 AM |
6261 | break; |
6262 | } | |
6263 | pp = &p->next; | |
6264 | } | |
6265 | } | |
6266 | } | |
6267 | else | |
1e2f5b6e | 6268 | { |
50bc7936 AM |
6269 | /* We need to adjust any reloc offsets to point to the |
6270 | new opd entries. While we're at it, we may as well | |
6271 | remove redundant relocs. */ | |
3f764659 | 6272 | rel->r_offset += opd_adjust[(offset - opd_ent_size) / 8]; |
1e2f5b6e AM |
6273 | if (write_rel != rel) |
6274 | memcpy (write_rel, rel, sizeof (*rel)); | |
6275 | ++write_rel; | |
6276 | } | |
6277 | } | |
6278 | ||
3f764659 | 6279 | sec->size = wptr - new_contents; |
1e2f5b6e | 6280 | sec->reloc_count = write_rel - relstart; |
3f764659 JJ |
6281 | if (add_aux_fields) |
6282 | { | |
6283 | free (sec->contents); | |
6284 | sec->contents = new_contents; | |
6285 | } | |
6286 | ||
cdcf6e38 AM |
6287 | /* Fudge the size too, as this is used later in |
6288 | elf_bfd_final_link if we are emitting relocs. */ | |
6289 | elf_section_data (sec)->rel_hdr.sh_size | |
6290 | = sec->reloc_count * elf_section_data (sec)->rel_hdr.sh_entsize; | |
6291 | BFD_ASSERT (elf_section_data (sec)->rel_hdr2 == NULL); | |
754021d0 | 6292 | some_edited = TRUE; |
1e2f5b6e | 6293 | } |
6cdc0ccc | 6294 | else if (elf_section_data (sec)->relocs != relstart) |
1e2f5b6e | 6295 | free (relstart); |
6cdc0ccc | 6296 | |
411e1bfb AM |
6297 | if (local_syms != NULL |
6298 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
6299 | { | |
6300 | if (!info->keep_memory) | |
6301 | free (local_syms); | |
6302 | else | |
6303 | symtab_hdr->contents = (unsigned char *) local_syms; | |
6304 | } | |
6305 | } | |
6306 | ||
754021d0 AM |
6307 | if (some_edited) |
6308 | elf_link_hash_traverse (elf_hash_table (info), adjust_opd_syms, NULL); | |
6309 | ||
3f764659 JJ |
6310 | /* If we are doing a final link and the last .opd entry is just 16 byte |
6311 | long, add a 8 byte padding after it. */ | |
6312 | if (need_pad != NULL && !info->relocatable) | |
6313 | { | |
6314 | bfd_byte *p; | |
6315 | ||
6316 | if ((need_pad->flags & SEC_IN_MEMORY) == 0) | |
6317 | { | |
6318 | BFD_ASSERT (need_pad->size > 0); | |
6319 | ||
6320 | p = bfd_malloc (need_pad->size + 8); | |
6321 | if (p == NULL) | |
6322 | return FALSE; | |
699733f6 | 6323 | |
3f764659 JJ |
6324 | if (! bfd_get_section_contents (need_pad->owner, need_pad, |
6325 | p, 0, need_pad->size)) | |
6326 | return FALSE; | |
6327 | ||
6328 | need_pad->contents = p; | |
6329 | need_pad->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS); | |
6330 | } | |
6331 | else | |
6332 | { | |
6333 | p = bfd_realloc (need_pad->contents, need_pad->size + 8); | |
6334 | if (p == NULL) | |
6335 | return FALSE; | |
6336 | ||
6337 | need_pad->contents = p; | |
6338 | } | |
6339 | ||
6340 | memset (need_pad->contents + need_pad->size, 0, 8); | |
6341 | need_pad->size += 8; | |
6342 | } | |
6343 | ||
411e1bfb AM |
6344 | return TRUE; |
6345 | } | |
6346 | ||
e1918d23 | 6347 | /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */ |
411e1bfb | 6348 | |
e1918d23 | 6349 | asection * |
4ce794b7 | 6350 | ppc64_elf_tls_setup (bfd *obfd, struct bfd_link_info *info) |
411e1bfb | 6351 | { |
411e1bfb AM |
6352 | struct ppc_link_hash_table *htab; |
6353 | ||
411e1bfb | 6354 | htab = ppc_hash_table (info); |
a48ebf4d AM |
6355 | if (htab->tls_get_addr != NULL) |
6356 | { | |
8387904d | 6357 | struct ppc_link_hash_entry *h = htab->tls_get_addr; |
a48ebf4d | 6358 | |
8387904d AM |
6359 | while (h->elf.root.type == bfd_link_hash_indirect |
6360 | || h->elf.root.type == bfd_link_hash_warning) | |
6361 | h = (struct ppc_link_hash_entry *) h->elf.root.u.i.link; | |
a48ebf4d AM |
6362 | |
6363 | htab->tls_get_addr = h; | |
8387904d AM |
6364 | |
6365 | if (htab->tls_get_addr_fd == NULL | |
6366 | && h->oh != NULL | |
6367 | && h->oh->is_func_descriptor) | |
6368 | htab->tls_get_addr_fd = h->oh; | |
6369 | } | |
6370 | ||
6371 | if (htab->tls_get_addr_fd != NULL) | |
6372 | { | |
6373 | struct ppc_link_hash_entry *h = htab->tls_get_addr_fd; | |
6374 | ||
6375 | while (h->elf.root.type == bfd_link_hash_indirect | |
6376 | || h->elf.root.type == bfd_link_hash_warning) | |
6377 | h = (struct ppc_link_hash_entry *) h->elf.root.u.i.link; | |
6378 | ||
6379 | htab->tls_get_addr_fd = h; | |
a48ebf4d AM |
6380 | } |
6381 | ||
e1918d23 | 6382 | return _bfd_elf_tls_setup (obfd, info); |
951fd09b | 6383 | } |
411e1bfb | 6384 | |
951fd09b AM |
6385 | /* Run through all the TLS relocs looking for optimization |
6386 | opportunities. The linker has been hacked (see ppc64elf.em) to do | |
6387 | a preliminary section layout so that we know the TLS segment | |
6388 | offsets. We can't optimize earlier because some optimizations need | |
6389 | to know the tp offset, and we need to optimize before allocating | |
6390 | dynamic relocations. */ | |
6391 | ||
6392 | bfd_boolean | |
4ce794b7 | 6393 | ppc64_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED, struct bfd_link_info *info) |
951fd09b AM |
6394 | { |
6395 | bfd *ibfd; | |
6396 | asection *sec; | |
6397 | struct ppc_link_hash_table *htab; | |
6398 | ||
1049f94e | 6399 | if (info->relocatable || info->shared) |
411e1bfb AM |
6400 | return TRUE; |
6401 | ||
951fd09b | 6402 | htab = ppc_hash_table (info); |
411e1bfb AM |
6403 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) |
6404 | { | |
6405 | Elf_Internal_Sym *locsyms = NULL; | |
6406 | ||
6407 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
6408 | if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section)) | |
6409 | { | |
6410 | Elf_Internal_Rela *relstart, *rel, *relend; | |
6411 | int expecting_tls_get_addr; | |
6412 | ||
6413 | /* Read the relocations. */ | |
4ce794b7 | 6414 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, |
45d6a902 | 6415 | info->keep_memory); |
411e1bfb AM |
6416 | if (relstart == NULL) |
6417 | return FALSE; | |
6418 | ||
6419 | expecting_tls_get_addr = 0; | |
6420 | relend = relstart + sec->reloc_count; | |
6421 | for (rel = relstart; rel < relend; rel++) | |
6422 | { | |
6423 | enum elf_ppc64_reloc_type r_type; | |
6424 | unsigned long r_symndx; | |
6425 | struct elf_link_hash_entry *h; | |
6426 | Elf_Internal_Sym *sym; | |
6427 | asection *sym_sec; | |
e7b938ca AM |
6428 | char *tls_mask; |
6429 | char tls_set, tls_clear, tls_type = 0; | |
411e1bfb | 6430 | bfd_vma value; |
951fd09b | 6431 | bfd_boolean ok_tprel, is_local; |
411e1bfb AM |
6432 | |
6433 | r_symndx = ELF64_R_SYM (rel->r_info); | |
e7b938ca | 6434 | if (!get_sym_h (&h, &sym, &sym_sec, &tls_mask, &locsyms, |
411e1bfb AM |
6435 | r_symndx, ibfd)) |
6436 | { | |
6437 | err_free_rel: | |
6438 | if (elf_section_data (sec)->relocs != relstart) | |
6439 | free (relstart); | |
6440 | if (locsyms != NULL | |
6441 | && (elf_tdata (ibfd)->symtab_hdr.contents | |
6442 | != (unsigned char *) locsyms)) | |
6443 | free (locsyms); | |
6444 | return FALSE; | |
6445 | } | |
6446 | ||
6447 | if (h != NULL) | |
6448 | { | |
6449 | if (h->root.type != bfd_link_hash_defined | |
6450 | && h->root.type != bfd_link_hash_defweak) | |
6451 | continue; | |
6452 | value = h->root.u.def.value; | |
6453 | } | |
6454 | else | |
4025353c AM |
6455 | /* Symbols referenced by TLS relocs must be of type |
6456 | STT_TLS. So no need for .opd local sym adjust. */ | |
6457 | value = sym->st_value; | |
951fd09b | 6458 | |
411e1bfb | 6459 | ok_tprel = FALSE; |
951fd09b AM |
6460 | is_local = FALSE; |
6461 | if (h == NULL | |
f5385ebf | 6462 | || !h->def_dynamic) |
411e1bfb | 6463 | { |
951fd09b | 6464 | is_local = TRUE; |
411e1bfb AM |
6465 | value += sym_sec->output_offset; |
6466 | value += sym_sec->output_section->vma; | |
e1918d23 | 6467 | value -= htab->elf.tls_sec->vma; |
411e1bfb AM |
6468 | ok_tprel = (value + TP_OFFSET + ((bfd_vma) 1 << 31) |
6469 | < (bfd_vma) 1 << 32); | |
6470 | } | |
6471 | ||
4ce794b7 | 6472 | r_type = ELF64_R_TYPE (rel->r_info); |
411e1bfb AM |
6473 | switch (r_type) |
6474 | { | |
6475 | case R_PPC64_GOT_TLSLD16: | |
6476 | case R_PPC64_GOT_TLSLD16_LO: | |
6477 | case R_PPC64_GOT_TLSLD16_HI: | |
6478 | case R_PPC64_GOT_TLSLD16_HA: | |
951fd09b AM |
6479 | /* These relocs should never be against a symbol |
6480 | defined in a shared lib. Leave them alone if | |
6481 | that turns out to be the case. */ | |
e717da7e | 6482 | ppc64_tlsld_got (ibfd)->refcount -= 1; |
951fd09b AM |
6483 | if (!is_local) |
6484 | continue; | |
6485 | ||
951fd09b AM |
6486 | /* LD -> LE */ |
6487 | tls_set = 0; | |
6488 | tls_clear = TLS_LD; | |
e7b938ca | 6489 | tls_type = TLS_TLS | TLS_LD; |
411e1bfb AM |
6490 | expecting_tls_get_addr = 1; |
6491 | break; | |
6492 | ||
6493 | case R_PPC64_GOT_TLSGD16: | |
6494 | case R_PPC64_GOT_TLSGD16_LO: | |
6495 | case R_PPC64_GOT_TLSGD16_HI: | |
6496 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b | 6497 | if (ok_tprel) |
411e1bfb AM |
6498 | /* GD -> LE */ |
6499 | tls_set = 0; | |
6500 | else | |
6501 | /* GD -> IE */ | |
951fd09b AM |
6502 | tls_set = TLS_TLS | TLS_TPRELGD; |
6503 | tls_clear = TLS_GD; | |
e7b938ca | 6504 | tls_type = TLS_TLS | TLS_GD; |
411e1bfb AM |
6505 | expecting_tls_get_addr = 1; |
6506 | break; | |
6507 | ||
6508 | case R_PPC64_GOT_TPREL16_DS: | |
6509 | case R_PPC64_GOT_TPREL16_LO_DS: | |
6510 | case R_PPC64_GOT_TPREL16_HI: | |
6511 | case R_PPC64_GOT_TPREL16_HA: | |
6512 | expecting_tls_get_addr = 0; | |
6513 | if (ok_tprel) | |
6514 | { | |
6515 | /* IE -> LE */ | |
6516 | tls_set = 0; | |
6517 | tls_clear = TLS_TPREL; | |
e7b938ca | 6518 | tls_type = TLS_TLS | TLS_TPREL; |
411e1bfb AM |
6519 | break; |
6520 | } | |
6521 | else | |
6522 | continue; | |
6523 | ||
6524 | case R_PPC64_REL14: | |
6525 | case R_PPC64_REL14_BRTAKEN: | |
6526 | case R_PPC64_REL14_BRNTAKEN: | |
6527 | case R_PPC64_REL24: | |
6528 | if (h != NULL | |
8387904d AM |
6529 | && (h == &htab->tls_get_addr->elf |
6530 | || h == &htab->tls_get_addr_fd->elf)) | |
411e1bfb AM |
6531 | { |
6532 | if (!expecting_tls_get_addr | |
6533 | && rel != relstart | |
6534 | && ((ELF64_R_TYPE (rel[-1].r_info) | |
6535 | == R_PPC64_TOC16) | |
6536 | || (ELF64_R_TYPE (rel[-1].r_info) | |
6537 | == R_PPC64_TOC16_LO))) | |
6538 | { | |
6539 | /* Check for toc tls entries. */ | |
6540 | char *toc_tls; | |
951fd09b | 6541 | int retval; |
411e1bfb | 6542 | |
0d4792f7 | 6543 | retval = get_tls_mask (&toc_tls, NULL, &locsyms, |
951fd09b AM |
6544 | rel - 1, ibfd); |
6545 | if (retval == 0) | |
411e1bfb AM |
6546 | goto err_free_rel; |
6547 | if (toc_tls != NULL) | |
951fd09b | 6548 | expecting_tls_get_addr = retval > 1; |
411e1bfb AM |
6549 | } |
6550 | ||
6551 | if (expecting_tls_get_addr) | |
6552 | { | |
6553 | struct plt_entry *ent; | |
6554 | for (ent = h->plt.plist; ent; ent = ent->next) | |
6555 | if (ent->addend == 0) | |
6556 | { | |
6557 | if (ent->plt.refcount > 0) | |
6558 | ent->plt.refcount -= 1; | |
6559 | break; | |
6560 | } | |
6561 | } | |
6562 | } | |
6563 | expecting_tls_get_addr = 0; | |
6564 | continue; | |
6565 | ||
6566 | case R_PPC64_TPREL64: | |
6567 | expecting_tls_get_addr = 0; | |
6568 | if (ok_tprel) | |
6569 | { | |
6570 | /* IE -> LE */ | |
6571 | tls_set = TLS_EXPLICIT; | |
6572 | tls_clear = TLS_TPREL; | |
6573 | break; | |
6574 | } | |
6575 | else | |
6576 | continue; | |
6577 | ||
6578 | case R_PPC64_DTPMOD64: | |
6579 | expecting_tls_get_addr = 0; | |
951fd09b AM |
6580 | if (rel + 1 < relend |
6581 | && (rel[1].r_info | |
6582 | == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)) | |
6583 | && rel[1].r_offset == rel->r_offset + 8) | |
411e1bfb | 6584 | { |
951fd09b | 6585 | if (ok_tprel) |
411e1bfb | 6586 | /* GD -> LE */ |
951fd09b | 6587 | tls_set = TLS_EXPLICIT | TLS_GD; |
411e1bfb AM |
6588 | else |
6589 | /* GD -> IE */ | |
951fd09b AM |
6590 | tls_set = TLS_EXPLICIT | TLS_GD | TLS_TPRELGD; |
6591 | tls_clear = TLS_GD; | |
411e1bfb AM |
6592 | } |
6593 | else | |
6594 | { | |
951fd09b AM |
6595 | if (!is_local) |
6596 | continue; | |
6597 | ||
6598 | /* LD -> LE */ | |
6599 | tls_set = TLS_EXPLICIT; | |
6600 | tls_clear = TLS_LD; | |
411e1bfb AM |
6601 | } |
6602 | break; | |
6603 | ||
6604 | default: | |
6605 | expecting_tls_get_addr = 0; | |
6606 | continue; | |
6607 | } | |
6608 | ||
6609 | if ((tls_set & TLS_EXPLICIT) == 0) | |
6610 | { | |
6611 | struct got_entry *ent; | |
6612 | ||
6613 | /* Adjust got entry for this reloc. */ | |
6614 | if (h != NULL) | |
6615 | ent = h->got.glist; | |
6616 | else | |
6617 | ent = elf_local_got_ents (ibfd)[r_symndx]; | |
6618 | ||
6619 | for (; ent != NULL; ent = ent->next) | |
6620 | if (ent->addend == rel->r_addend | |
e717da7e | 6621 | && ent->owner == ibfd |
e7b938ca | 6622 | && ent->tls_type == tls_type) |
411e1bfb AM |
6623 | break; |
6624 | if (ent == NULL) | |
6625 | abort (); | |
6626 | ||
6627 | if (tls_set == 0) | |
6628 | { | |
6629 | /* We managed to get rid of a got entry. */ | |
6630 | if (ent->got.refcount > 0) | |
6631 | ent->got.refcount -= 1; | |
6632 | } | |
411e1bfb AM |
6633 | } |
6634 | else if (h != NULL) | |
6635 | { | |
6636 | struct ppc_link_hash_entry * eh; | |
6637 | struct ppc_dyn_relocs **pp; | |
6638 | struct ppc_dyn_relocs *p; | |
6639 | ||
6640 | /* Adjust dynamic relocs. */ | |
6641 | eh = (struct ppc_link_hash_entry *) h; | |
6642 | for (pp = &eh->dyn_relocs; | |
6643 | (p = *pp) != NULL; | |
6644 | pp = &p->next) | |
6645 | if (p->sec == sec) | |
6646 | { | |
6647 | /* If we got rid of a DTPMOD/DTPREL reloc | |
6648 | pair then we'll lose one or two dyn | |
6649 | relocs. */ | |
951fd09b | 6650 | if (tls_set == (TLS_EXPLICIT | TLS_GD)) |
411e1bfb | 6651 | p->count -= 1; |
951fd09b | 6652 | p->count -= 1; |
411e1bfb AM |
6653 | if (p->count == 0) |
6654 | *pp = p->next; | |
6655 | break; | |
6656 | } | |
6657 | } | |
6658 | ||
e7b938ca AM |
6659 | *tls_mask |= tls_set; |
6660 | *tls_mask &= ~tls_clear; | |
411e1bfb AM |
6661 | } |
6662 | ||
6663 | if (elf_section_data (sec)->relocs != relstart) | |
6664 | free (relstart); | |
6665 | } | |
6666 | ||
6667 | if (locsyms != NULL | |
6668 | && (elf_tdata (ibfd)->symtab_hdr.contents | |
6669 | != (unsigned char *) locsyms)) | |
6cdc0ccc AM |
6670 | { |
6671 | if (!info->keep_memory) | |
411e1bfb | 6672 | free (locsyms); |
6cdc0ccc | 6673 | else |
411e1bfb | 6674 | elf_tdata (ibfd)->symtab_hdr.contents = (unsigned char *) locsyms; |
6cdc0ccc | 6675 | } |
1e2f5b6e | 6676 | } |
b34976b6 | 6677 | return TRUE; |
1e2f5b6e | 6678 | } |
b34976b6 | 6679 | |
c5614fa4 AM |
6680 | /* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust |
6681 | the values of any global symbols in a toc section that has been | |
6682 | edited. Globals in toc sections should be a rarity, so this function | |
6683 | sets a flag if any are found in toc sections other than the one just | |
6684 | edited, so that futher hash table traversals can be avoided. */ | |
6685 | ||
6686 | struct adjust_toc_info | |
6687 | { | |
6688 | asection *toc; | |
6689 | unsigned long *skip; | |
6690 | bfd_boolean global_toc_syms; | |
6691 | }; | |
6692 | ||
6693 | static bfd_boolean | |
6694 | adjust_toc_syms (struct elf_link_hash_entry *h, void *inf) | |
6695 | { | |
6696 | struct ppc_link_hash_entry *eh; | |
6697 | struct adjust_toc_info *toc_inf = (struct adjust_toc_info *) inf; | |
6698 | ||
6699 | if (h->root.type == bfd_link_hash_indirect) | |
6700 | return TRUE; | |
6701 | ||
6702 | if (h->root.type == bfd_link_hash_warning) | |
6703 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
6704 | ||
6705 | if (h->root.type != bfd_link_hash_defined | |
6706 | && h->root.type != bfd_link_hash_defweak) | |
6707 | return TRUE; | |
6708 | ||
6709 | eh = (struct ppc_link_hash_entry *) h; | |
6710 | if (eh->adjust_done) | |
6711 | return TRUE; | |
6712 | ||
6713 | if (eh->elf.root.u.def.section == toc_inf->toc) | |
6714 | { | |
6715 | unsigned long skip = toc_inf->skip[eh->elf.root.u.def.value >> 3]; | |
6716 | if (skip != (unsigned long) -1) | |
6717 | eh->elf.root.u.def.value -= skip; | |
6718 | else | |
6719 | { | |
6720 | (*_bfd_error_handler) | |
6721 | (_("%s defined in removed toc entry"), eh->elf.root.root.string); | |
6722 | eh->elf.root.u.def.section = &bfd_abs_section; | |
6723 | eh->elf.root.u.def.value = 0; | |
6724 | } | |
6725 | eh->adjust_done = 1; | |
6726 | } | |
6727 | else if (strcmp (eh->elf.root.u.def.section->name, ".toc") == 0) | |
6728 | toc_inf->global_toc_syms = TRUE; | |
6729 | ||
6730 | return TRUE; | |
6731 | } | |
6732 | ||
6733 | /* Examine all relocs referencing .toc sections in order to remove | |
6734 | unused .toc entries. */ | |
6735 | ||
6736 | bfd_boolean | |
6737 | ppc64_elf_edit_toc (bfd *obfd ATTRIBUTE_UNUSED, struct bfd_link_info *info) | |
6738 | { | |
6739 | bfd *ibfd; | |
6740 | struct adjust_toc_info toc_inf; | |
6741 | ||
6742 | toc_inf.global_toc_syms = TRUE; | |
6743 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
6744 | { | |
6745 | asection *toc, *sec; | |
6746 | Elf_Internal_Shdr *symtab_hdr; | |
6747 | Elf_Internal_Sym *local_syms; | |
6748 | struct elf_link_hash_entry **sym_hashes; | |
6749 | Elf_Internal_Rela *relstart, *rel, *wrel; | |
6750 | unsigned long *skip, *drop; | |
6751 | unsigned char *used; | |
6752 | unsigned char *keep, last, some_unused; | |
6753 | ||
6754 | toc = bfd_get_section_by_name (ibfd, ".toc"); | |
6755 | if (toc == NULL | |
6756 | || toc->sec_info_type == ELF_INFO_TYPE_JUST_SYMS | |
6757 | || elf_discarded_section (toc)) | |
6758 | continue; | |
6759 | ||
6760 | local_syms = NULL; | |
6761 | symtab_hdr = &elf_tdata (ibfd)->symtab_hdr; | |
6762 | sym_hashes = elf_sym_hashes (ibfd); | |
6763 | ||
6764 | /* Look at sections dropped from the final link. */ | |
6765 | skip = NULL; | |
6766 | relstart = NULL; | |
6767 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
6768 | { | |
6769 | if (sec->reloc_count == 0 | |
6770 | || !elf_discarded_section (sec) | |
6771 | || get_opd_info (sec) | |
6772 | || (sec->flags & SEC_ALLOC) == 0 | |
6773 | || (sec->flags & SEC_DEBUGGING) != 0) | |
6774 | continue; | |
6775 | ||
6776 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, FALSE); | |
6777 | if (relstart == NULL) | |
6778 | goto error_ret; | |
6779 | ||
6780 | /* Run through the relocs to see which toc entries might be | |
6781 | unused. */ | |
6782 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
6783 | { | |
6784 | enum elf_ppc64_reloc_type r_type; | |
6785 | unsigned long r_symndx; | |
6786 | asection *sym_sec; | |
6787 | struct elf_link_hash_entry *h; | |
6788 | Elf_Internal_Sym *sym; | |
6789 | bfd_vma val; | |
6790 | ||
6791 | r_type = ELF64_R_TYPE (rel->r_info); | |
6792 | switch (r_type) | |
6793 | { | |
6794 | default: | |
6795 | continue; | |
6796 | ||
6797 | case R_PPC64_TOC16: | |
6798 | case R_PPC64_TOC16_LO: | |
6799 | case R_PPC64_TOC16_HI: | |
6800 | case R_PPC64_TOC16_HA: | |
6801 | case R_PPC64_TOC16_DS: | |
6802 | case R_PPC64_TOC16_LO_DS: | |
6803 | break; | |
6804 | } | |
6805 | ||
6806 | r_symndx = ELF64_R_SYM (rel->r_info); | |
6807 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
6808 | r_symndx, ibfd)) | |
6809 | goto error_ret; | |
6810 | ||
6811 | if (sym_sec != toc) | |
6812 | continue; | |
6813 | ||
6814 | if (h != NULL) | |
6815 | val = h->root.u.def.value; | |
6816 | else | |
6817 | val = sym->st_value; | |
6818 | val += rel->r_addend; | |
6819 | ||
6820 | if (val >= toc->size) | |
6821 | continue; | |
6822 | ||
6823 | /* Anything in the toc ought to be aligned to 8 bytes. | |
6824 | If not, don't mark as unused. */ | |
6825 | if (val & 7) | |
6826 | continue; | |
6827 | ||
6828 | if (skip == NULL) | |
6829 | { | |
6830 | skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 7) / 8); | |
6831 | if (skip == NULL) | |
6832 | goto error_ret; | |
6833 | } | |
6834 | ||
6835 | skip[val >> 3] = 1; | |
6836 | } | |
6837 | ||
6838 | if (elf_section_data (sec)->relocs != relstart) | |
6839 | free (relstart); | |
6840 | } | |
6841 | ||
6842 | if (skip == NULL) | |
6843 | continue; | |
6844 | ||
6845 | used = bfd_zmalloc (sizeof (*used) * (toc->size + 7) / 8); | |
6846 | if (used == NULL) | |
6847 | { | |
6848 | error_ret: | |
6849 | if (local_syms != NULL | |
6850 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
6851 | free (local_syms); | |
6852 | if (sec != NULL | |
6853 | && relstart != NULL | |
6854 | && elf_section_data (sec)->relocs != relstart) | |
6855 | free (relstart); | |
6856 | if (skip != NULL) | |
6857 | free (skip); | |
6858 | return FALSE; | |
6859 | } | |
6860 | ||
6861 | /* Now check all kept sections that might reference the toc. */ | |
6862 | for (sec = ibfd->sections; | |
6863 | sec != NULL; | |
6864 | /* Check the toc itself last. */ | |
6865 | sec = (sec == toc ? NULL | |
6866 | : sec->next == toc && sec->next->next ? sec->next->next | |
6867 | : sec->next == NULL ? toc | |
6868 | : sec->next)) | |
6869 | { | |
6870 | int repeat; | |
6871 | ||
6872 | if (sec->reloc_count == 0 | |
6873 | || elf_discarded_section (sec) | |
6874 | || get_opd_info (sec) | |
6875 | || (sec->flags & SEC_ALLOC) == 0 | |
6876 | || (sec->flags & SEC_DEBUGGING) != 0) | |
6877 | continue; | |
6878 | ||
6879 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, TRUE); | |
6880 | if (relstart == NULL) | |
6881 | goto error_ret; | |
6882 | ||
6883 | /* Mark toc entries referenced as used. */ | |
6884 | repeat = 0; | |
6885 | do | |
6886 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
6887 | { | |
6888 | enum elf_ppc64_reloc_type r_type; | |
6889 | unsigned long r_symndx; | |
6890 | asection *sym_sec; | |
6891 | struct elf_link_hash_entry *h; | |
6892 | Elf_Internal_Sym *sym; | |
6893 | bfd_vma val; | |
6894 | ||
6895 | r_type = ELF64_R_TYPE (rel->r_info); | |
6896 | switch (r_type) | |
6897 | { | |
6898 | case R_PPC64_TOC16: | |
6899 | case R_PPC64_TOC16_LO: | |
6900 | case R_PPC64_TOC16_HI: | |
6901 | case R_PPC64_TOC16_HA: | |
6902 | case R_PPC64_TOC16_DS: | |
6903 | case R_PPC64_TOC16_LO_DS: | |
6904 | /* In case we're taking addresses of toc entries. */ | |
6905 | case R_PPC64_ADDR64: | |
6906 | break; | |
6907 | ||
6908 | default: | |
6909 | continue; | |
6910 | } | |
6911 | ||
6912 | r_symndx = ELF64_R_SYM (rel->r_info); | |
6913 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
6914 | r_symndx, ibfd)) | |
6915 | { | |
6916 | free (used); | |
6917 | goto error_ret; | |
6918 | } | |
6919 | ||
6920 | if (sym_sec != toc) | |
6921 | continue; | |
6922 | ||
6923 | if (h != NULL) | |
6924 | val = h->root.u.def.value; | |
6925 | else | |
6926 | val = sym->st_value; | |
6927 | val += rel->r_addend; | |
6928 | ||
6929 | if (val >= toc->size) | |
6930 | continue; | |
6931 | ||
6932 | /* For the toc section, we only mark as used if | |
6933 | this entry itself isn't unused. */ | |
6934 | if (sec == toc | |
6935 | && !used[val >> 3] | |
6936 | && (used[rel->r_offset >> 3] | |
6937 | || !skip[rel->r_offset >> 3])) | |
6938 | /* Do all the relocs again, to catch reference | |
6939 | chains. */ | |
6940 | repeat = 1; | |
6941 | ||
6942 | used[val >> 3] = 1; | |
6943 | } | |
6944 | while (repeat); | |
6945 | } | |
6946 | ||
6947 | /* Merge the used and skip arrays. Assume that TOC | |
6948 | doublewords not appearing as either used or unused belong | |
6949 | to to an entry more than one doubleword in size. */ | |
6950 | for (drop = skip, keep = used, last = 0, some_unused = 0; | |
6951 | drop < skip + (toc->size + 7) / 8; | |
6952 | ++drop, ++keep) | |
6953 | { | |
6954 | if (*keep) | |
6955 | { | |
6956 | *drop = 0; | |
6957 | last = 0; | |
6958 | } | |
6959 | else if (*drop) | |
6960 | { | |
6961 | some_unused = 1; | |
6962 | last = 1; | |
6963 | } | |
6964 | else | |
6965 | *drop = last; | |
6966 | } | |
6967 | ||
6968 | free (used); | |
6969 | ||
6970 | if (some_unused) | |
6971 | { | |
6972 | bfd_byte *contents, *src; | |
6973 | unsigned long off; | |
6974 | ||
6975 | /* Shuffle the toc contents, and at the same time convert the | |
6976 | skip array from booleans into offsets. */ | |
6977 | if (!bfd_malloc_and_get_section (ibfd, toc, &contents)) | |
6978 | goto error_ret; | |
6979 | ||
6980 | elf_section_data (toc)->this_hdr.contents = contents; | |
6981 | ||
6982 | for (src = contents, off = 0, drop = skip; | |
6983 | src < contents + toc->size; | |
6984 | src += 8, ++drop) | |
6985 | { | |
6986 | if (*drop) | |
6987 | { | |
6988 | *drop = (unsigned long) -1; | |
6989 | off += 8; | |
6990 | } | |
6991 | else if (off != 0) | |
6992 | { | |
6993 | *drop = off; | |
6994 | memcpy (src - off, src, 8); | |
6995 | } | |
6996 | } | |
6997 | toc->rawsize = toc->size; | |
6998 | toc->size = src - contents - off; | |
6999 | ||
7000 | /* Read toc relocs. */ | |
7001 | relstart = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL, TRUE); | |
7002 | if (relstart == NULL) | |
7003 | goto error_ret; | |
7004 | ||
7005 | /* Remove unused toc relocs, and adjust those we keep. */ | |
7006 | wrel = relstart; | |
7007 | for (rel = relstart; rel < relstart + toc->reloc_count; ++rel) | |
7008 | if (skip[rel->r_offset >> 3] != (unsigned long) -1) | |
7009 | { | |
7010 | wrel->r_offset = rel->r_offset - skip[rel->r_offset >> 3]; | |
7011 | wrel->r_info = rel->r_info; | |
7012 | wrel->r_addend = rel->r_addend; | |
7013 | ++wrel; | |
7014 | } | |
7015 | toc->reloc_count = wrel - relstart; | |
8860955f AM |
7016 | elf_section_data (toc)->rel_hdr.sh_size |
7017 | = toc->reloc_count * elf_section_data (toc)->rel_hdr.sh_entsize; | |
7018 | BFD_ASSERT (elf_section_data (toc)->rel_hdr2 == NULL); | |
c5614fa4 AM |
7019 | |
7020 | /* Adjust addends for relocs against the toc section sym. */ | |
7021 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
7022 | { | |
7023 | if (sec->reloc_count == 0 | |
7024 | || elf_discarded_section (sec)) | |
7025 | continue; | |
7026 | ||
7027 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, | |
7028 | TRUE); | |
7029 | if (relstart == NULL) | |
7030 | goto error_ret; | |
7031 | ||
7032 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
7033 | { | |
7034 | enum elf_ppc64_reloc_type r_type; | |
7035 | unsigned long r_symndx; | |
7036 | asection *sym_sec; | |
7037 | struct elf_link_hash_entry *h; | |
7038 | Elf_Internal_Sym *sym; | |
7039 | ||
7040 | r_type = ELF64_R_TYPE (rel->r_info); | |
7041 | switch (r_type) | |
7042 | { | |
7043 | default: | |
7044 | continue; | |
7045 | ||
7046 | case R_PPC64_TOC16: | |
7047 | case R_PPC64_TOC16_LO: | |
7048 | case R_PPC64_TOC16_HI: | |
7049 | case R_PPC64_TOC16_HA: | |
7050 | case R_PPC64_TOC16_DS: | |
7051 | case R_PPC64_TOC16_LO_DS: | |
7052 | case R_PPC64_ADDR64: | |
7053 | break; | |
7054 | } | |
7055 | ||
7056 | r_symndx = ELF64_R_SYM (rel->r_info); | |
7057 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
7058 | r_symndx, ibfd)) | |
7059 | goto error_ret; | |
7060 | ||
7061 | if (sym_sec != toc || h != NULL || sym->st_value != 0) | |
7062 | continue; | |
7063 | ||
7064 | rel->r_addend -= skip[rel->r_addend >> 3]; | |
7065 | } | |
7066 | } | |
7067 | ||
7068 | /* We shouldn't have local or global symbols defined in the TOC, | |
7069 | but handle them anyway. */ | |
7070 | if (local_syms != NULL) | |
7071 | { | |
7072 | Elf_Internal_Sym *sym; | |
7073 | ||
7074 | for (sym = local_syms; | |
7075 | sym < local_syms + symtab_hdr->sh_info; | |
7076 | ++sym) | |
7077 | if (sym->st_shndx != SHN_UNDEF | |
7078 | && (sym->st_shndx < SHN_LORESERVE | |
7079 | || sym->st_shndx > SHN_HIRESERVE) | |
7080 | && sym->st_value != 0 | |
7081 | && bfd_section_from_elf_index (ibfd, sym->st_shndx) == toc) | |
7082 | { | |
7083 | if (skip[sym->st_value >> 3] != (unsigned long) -1) | |
7084 | sym->st_value -= skip[sym->st_value >> 3]; | |
7085 | else | |
7086 | { | |
7087 | (*_bfd_error_handler) | |
7088 | (_("%s defined in removed toc entry"), | |
be8dd2ca | 7089 | bfd_elf_sym_name (ibfd, symtab_hdr, sym)); |
c5614fa4 AM |
7090 | sym->st_value = 0; |
7091 | sym->st_shndx = SHN_ABS; | |
7092 | } | |
7093 | symtab_hdr->contents = (unsigned char *) local_syms; | |
7094 | } | |
7095 | } | |
7096 | ||
7097 | /* Finally, adjust any global syms defined in the toc. */ | |
7098 | if (toc_inf.global_toc_syms) | |
7099 | { | |
7100 | toc_inf.toc = toc; | |
7101 | toc_inf.skip = skip; | |
7102 | toc_inf.global_toc_syms = FALSE; | |
7103 | elf_link_hash_traverse (elf_hash_table (info), adjust_toc_syms, | |
7104 | &toc_inf); | |
7105 | } | |
7106 | } | |
7107 | ||
7108 | if (local_syms != NULL | |
7109 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
7110 | { | |
7111 | if (!info->keep_memory) | |
7112 | free (local_syms); | |
7113 | else | |
7114 | symtab_hdr->contents = (unsigned char *) local_syms; | |
7115 | } | |
7116 | free (skip); | |
7117 | } | |
7118 | ||
7119 | return TRUE; | |
7120 | } | |
7121 | ||
65f38f15 AM |
7122 | /* Allocate space in .plt, .got and associated reloc sections for |
7123 | dynamic relocs. */ | |
5bd4f169 | 7124 | |
b34976b6 | 7125 | static bfd_boolean |
4ce794b7 | 7126 | allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf) |
5bd4f169 | 7127 | { |
65f38f15 AM |
7128 | struct bfd_link_info *info; |
7129 | struct ppc_link_hash_table *htab; | |
5bd4f169 | 7130 | asection *s; |
65f38f15 AM |
7131 | struct ppc_link_hash_entry *eh; |
7132 | struct ppc_dyn_relocs *p; | |
411e1bfb | 7133 | struct got_entry *gent; |
5bd4f169 | 7134 | |
e92d460e | 7135 | if (h->root.type == bfd_link_hash_indirect) |
b34976b6 | 7136 | return TRUE; |
5bd4f169 | 7137 | |
e92d460e AM |
7138 | if (h->root.type == bfd_link_hash_warning) |
7139 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
7140 | ||
65f38f15 AM |
7141 | info = (struct bfd_link_info *) inf; |
7142 | htab = ppc_hash_table (info); | |
5bd4f169 | 7143 | |
65f38f15 | 7144 | if (htab->elf.dynamic_sections_created |
411e1bfb | 7145 | && h->dynindx != -1 |
9c7a29a3 | 7146 | && WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, h)) |
5bd4f169 | 7147 | { |
411e1bfb AM |
7148 | struct plt_entry *pent; |
7149 | bfd_boolean doneone = FALSE; | |
7150 | for (pent = h->plt.plist; pent != NULL; pent = pent->next) | |
7151 | if (pent->plt.refcount > 0) | |
7152 | { | |
411e1bfb AM |
7153 | /* If this is the first .plt entry, make room for the special |
7154 | first entry. */ | |
4ce794b7 | 7155 | s = htab->plt; |
eea6121a AM |
7156 | if (s->size == 0) |
7157 | s->size += PLT_INITIAL_ENTRY_SIZE; | |
411e1bfb | 7158 | |
eea6121a | 7159 | pent->plt.offset = s->size; |
411e1bfb AM |
7160 | |
7161 | /* Make room for this entry. */ | |
eea6121a | 7162 | s->size += PLT_ENTRY_SIZE; |
411e1bfb AM |
7163 | |
7164 | /* Make room for the .glink code. */ | |
4ce794b7 | 7165 | s = htab->glink; |
eea6121a AM |
7166 | if (s->size == 0) |
7167 | s->size += GLINK_CALL_STUB_SIZE; | |
411e1bfb | 7168 | /* We need bigger stubs past index 32767. */ |
eea6121a AM |
7169 | if (s->size >= GLINK_CALL_STUB_SIZE + 32768*2*4) |
7170 | s->size += 4; | |
7171 | s->size += 2*4; | |
411e1bfb AM |
7172 | |
7173 | /* We also need to make an entry in the .rela.plt section. */ | |
4ce794b7 | 7174 | s = htab->relplt; |
eea6121a | 7175 | s->size += sizeof (Elf64_External_Rela); |
411e1bfb AM |
7176 | doneone = TRUE; |
7177 | } | |
7178 | else | |
7179 | pent->plt.offset = (bfd_vma) -1; | |
7180 | if (!doneone) | |
65f38f15 | 7181 | { |
411e1bfb | 7182 | h->plt.plist = NULL; |
f5385ebf | 7183 | h->needs_plt = 0; |
65f38f15 AM |
7184 | } |
7185 | } | |
7186 | else | |
7187 | { | |
411e1bfb | 7188 | h->plt.plist = NULL; |
f5385ebf | 7189 | h->needs_plt = 0; |
65f38f15 AM |
7190 | } |
7191 | ||
951fd09b AM |
7192 | eh = (struct ppc_link_hash_entry *) h; |
7193 | /* Run through the TLS GD got entries first if we're changing them | |
7194 | to TPREL. */ | |
e7b938ca | 7195 | if ((eh->tls_mask & TLS_TPRELGD) != 0) |
951fd09b AM |
7196 | for (gent = h->got.glist; gent != NULL; gent = gent->next) |
7197 | if (gent->got.refcount > 0 | |
7198 | && (gent->tls_type & TLS_GD) != 0) | |
7199 | { | |
7200 | /* This was a GD entry that has been converted to TPREL. If | |
7201 | there happens to be a TPREL entry we can use that one. */ | |
7202 | struct got_entry *ent; | |
7203 | for (ent = h->got.glist; ent != NULL; ent = ent->next) | |
7204 | if (ent->got.refcount > 0 | |
7205 | && (ent->tls_type & TLS_TPREL) != 0 | |
e717da7e AM |
7206 | && ent->addend == gent->addend |
7207 | && ent->owner == gent->owner) | |
951fd09b AM |
7208 | { |
7209 | gent->got.refcount = 0; | |
7210 | break; | |
7211 | } | |
7212 | ||
7213 | /* If not, then we'll be using our own TPREL entry. */ | |
7214 | if (gent->got.refcount != 0) | |
7215 | gent->tls_type = TLS_TLS | TLS_TPREL; | |
7216 | } | |
7217 | ||
411e1bfb AM |
7218 | for (gent = h->got.glist; gent != NULL; gent = gent->next) |
7219 | if (gent->got.refcount > 0) | |
7220 | { | |
951fd09b AM |
7221 | bfd_boolean dyn; |
7222 | ||
411e1bfb | 7223 | /* Make sure this symbol is output as a dynamic symbol. |
951fd09b AM |
7224 | Undefined weak syms won't yet be marked as dynamic, |
7225 | nor will all TLS symbols. */ | |
411e1bfb | 7226 | if (h->dynindx == -1 |
f5385ebf | 7227 | && !h->forced_local) |
411e1bfb | 7228 | { |
c152c796 | 7229 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
411e1bfb AM |
7230 | return FALSE; |
7231 | } | |
65f38f15 | 7232 | |
d881513a | 7233 | if ((gent->tls_type & TLS_LD) != 0 |
f5385ebf | 7234 | && !h->def_dynamic) |
411e1bfb | 7235 | { |
e717da7e | 7236 | gent->got.offset = ppc64_tlsld_got (gent->owner)->offset; |
951fd09b | 7237 | continue; |
411e1bfb | 7238 | } |
951fd09b | 7239 | |
e717da7e | 7240 | s = ppc64_elf_tdata (gent->owner)->got; |
eea6121a AM |
7241 | gent->got.offset = s->size; |
7242 | s->size | |
d881513a | 7243 | += (gent->tls_type & eh->tls_mask & (TLS_GD | TLS_LD)) ? 16 : 8; |
951fd09b | 7244 | dyn = htab->elf.dynamic_sections_created; |
4e795f50 AM |
7245 | if ((info->shared |
7246 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)) | |
7247 | && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
7248 | || h->root.type != bfd_link_hash_undefweak)) | |
eea6121a | 7249 | ppc64_elf_tdata (gent->owner)->relgot->size |
e7b938ca | 7250 | += (gent->tls_type & eh->tls_mask & TLS_GD |
951fd09b AM |
7251 | ? 2 * sizeof (Elf64_External_Rela) |
7252 | : sizeof (Elf64_External_Rela)); | |
411e1bfb AM |
7253 | } |
7254 | else | |
7255 | gent->got.offset = (bfd_vma) -1; | |
65f38f15 | 7256 | |
65f38f15 | 7257 | if (eh->dyn_relocs == NULL) |
b34976b6 | 7258 | return TRUE; |
65f38f15 AM |
7259 | |
7260 | /* In the shared -Bsymbolic case, discard space allocated for | |
7261 | dynamic pc-relative relocs against symbols which turn out to be | |
7262 | defined in regular objects. For the normal shared case, discard | |
7263 | space for relocs that have become local due to symbol visibility | |
7264 | changes. */ | |
7265 | ||
7266 | if (info->shared) | |
7267 | { | |
9c7a29a3 AM |
7268 | /* Relocs that use pc_count are those that appear on a call insn, |
7269 | or certain REL relocs (see MUST_BE_DYN_RELOC) that can be | |
7270 | generated via assembly. We want calls to protected symbols to | |
7271 | resolve directly to the function rather than going via the plt. | |
7272 | If people want function pointer comparisons to work as expected | |
7273 | then they should avoid writing weird assembly. */ | |
09695f56 | 7274 | if (SYMBOL_CALLS_LOCAL (info, h)) |
65f38f15 AM |
7275 | { |
7276 | struct ppc_dyn_relocs **pp; | |
7277 | ||
7278 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; ) | |
5bd4f169 | 7279 | { |
65f38f15 AM |
7280 | p->count -= p->pc_count; |
7281 | p->pc_count = 0; | |
7282 | if (p->count == 0) | |
7283 | *pp = p->next; | |
7284 | else | |
7285 | pp = &p->next; | |
5bd4f169 | 7286 | } |
65f38f15 | 7287 | } |
4e795f50 AM |
7288 | |
7289 | /* Also discard relocs on undefined weak syms with non-default | |
7290 | visibility. */ | |
7291 | if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT | |
7292 | && h->root.type == bfd_link_hash_undefweak) | |
7293 | eh->dyn_relocs = NULL; | |
65f38f15 | 7294 | } |
f4656909 | 7295 | else if (ELIMINATE_COPY_RELOCS) |
65f38f15 AM |
7296 | { |
7297 | /* For the non-shared case, discard space for relocs against | |
7298 | symbols which turn out to need copy relocs or are not | |
7299 | dynamic. */ | |
7300 | ||
f5385ebf AM |
7301 | if (!h->non_got_ref |
7302 | && h->def_dynamic | |
7303 | && !h->def_regular) | |
65f38f15 AM |
7304 | { |
7305 | /* Make sure this symbol is output as a dynamic symbol. | |
7306 | Undefined weak syms won't yet be marked as dynamic. */ | |
7307 | if (h->dynindx == -1 | |
f5385ebf | 7308 | && !h->forced_local) |
65f38f15 | 7309 | { |
c152c796 | 7310 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 7311 | return FALSE; |
65f38f15 AM |
7312 | } |
7313 | ||
7314 | /* If that succeeded, we know we'll be keeping all the | |
7315 | relocs. */ | |
7316 | if (h->dynindx != -1) | |
7317 | goto keep; | |
7318 | } | |
7319 | ||
7320 | eh->dyn_relocs = NULL; | |
7321 | ||
ec338859 | 7322 | keep: ; |
65f38f15 AM |
7323 | } |
7324 | ||
7325 | /* Finally, allocate space. */ | |
7326 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
7327 | { | |
7328 | asection *sreloc = elf_section_data (p->sec)->sreloc; | |
eea6121a | 7329 | sreloc->size += p->count * sizeof (Elf64_External_Rela); |
65f38f15 AM |
7330 | } |
7331 | ||
b34976b6 | 7332 | return TRUE; |
65f38f15 AM |
7333 | } |
7334 | ||
7335 | /* Find any dynamic relocs that apply to read-only sections. */ | |
7336 | ||
b34976b6 | 7337 | static bfd_boolean |
4ce794b7 | 7338 | readonly_dynrelocs (struct elf_link_hash_entry *h, void *inf) |
65f38f15 AM |
7339 | { |
7340 | struct ppc_link_hash_entry *eh; | |
7341 | struct ppc_dyn_relocs *p; | |
7342 | ||
e92d460e AM |
7343 | if (h->root.type == bfd_link_hash_warning) |
7344 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
7345 | ||
65f38f15 AM |
7346 | eh = (struct ppc_link_hash_entry *) h; |
7347 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
7348 | { | |
7349 | asection *s = p->sec->output_section; | |
7350 | ||
7351 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
7352 | { | |
4ce794b7 | 7353 | struct bfd_link_info *info = inf; |
65f38f15 AM |
7354 | |
7355 | info->flags |= DF_TEXTREL; | |
7356 | ||
7357 | /* Not an error, just cut short the traversal. */ | |
b34976b6 | 7358 | return FALSE; |
65f38f15 AM |
7359 | } |
7360 | } | |
b34976b6 | 7361 | return TRUE; |
65f38f15 AM |
7362 | } |
7363 | ||
7364 | /* Set the sizes of the dynamic sections. */ | |
7365 | ||
b34976b6 | 7366 | static bfd_boolean |
4ce794b7 AM |
7367 | ppc64_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED, |
7368 | struct bfd_link_info *info) | |
65f38f15 AM |
7369 | { |
7370 | struct ppc_link_hash_table *htab; | |
7371 | bfd *dynobj; | |
7372 | asection *s; | |
b34976b6 | 7373 | bfd_boolean relocs; |
65f38f15 AM |
7374 | bfd *ibfd; |
7375 | ||
7376 | htab = ppc_hash_table (info); | |
7377 | dynobj = htab->elf.dynobj; | |
7378 | if (dynobj == NULL) | |
7379 | abort (); | |
7380 | ||
7381 | if (htab->elf.dynamic_sections_created) | |
7382 | { | |
7383 | /* Set the contents of the .interp section to the interpreter. */ | |
36af4a4e | 7384 | if (info->executable) |
65f38f15 AM |
7385 | { |
7386 | s = bfd_get_section_by_name (dynobj, ".interp"); | |
7387 | if (s == NULL) | |
7388 | abort (); | |
eea6121a | 7389 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; |
65f38f15 AM |
7390 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; |
7391 | } | |
7392 | } | |
7393 | ||
7394 | /* Set up .got offsets for local syms, and space for local dynamic | |
7395 | relocs. */ | |
7396 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
7397 | { | |
411e1bfb AM |
7398 | struct got_entry **lgot_ents; |
7399 | struct got_entry **end_lgot_ents; | |
e7b938ca | 7400 | char *lgot_masks; |
65f38f15 AM |
7401 | bfd_size_type locsymcount; |
7402 | Elf_Internal_Shdr *symtab_hdr; | |
7403 | asection *srel; | |
7404 | ||
ee75fd95 | 7405 | if (!is_ppc64_elf_target (ibfd->xvec)) |
65f38f15 AM |
7406 | continue; |
7407 | ||
e717da7e AM |
7408 | if (ppc64_tlsld_got (ibfd)->refcount > 0) |
7409 | { | |
7410 | s = ppc64_elf_tdata (ibfd)->got; | |
eea6121a AM |
7411 | ppc64_tlsld_got (ibfd)->offset = s->size; |
7412 | s->size += 16; | |
e717da7e AM |
7413 | if (info->shared) |
7414 | { | |
7415 | srel = ppc64_elf_tdata (ibfd)->relgot; | |
eea6121a | 7416 | srel->size += sizeof (Elf64_External_Rela); |
e717da7e AM |
7417 | } |
7418 | } | |
7419 | else | |
7420 | ppc64_tlsld_got (ibfd)->offset = (bfd_vma) -1; | |
7421 | ||
65f38f15 AM |
7422 | for (s = ibfd->sections; s != NULL; s = s->next) |
7423 | { | |
ec338859 | 7424 | struct ppc_dyn_relocs *p; |
65f38f15 | 7425 | |
ec338859 AM |
7426 | for (p = *((struct ppc_dyn_relocs **) |
7427 | &elf_section_data (s)->local_dynrel); | |
7428 | p != NULL; | |
7429 | p = p->next) | |
65f38f15 | 7430 | { |
ec338859 AM |
7431 | if (!bfd_is_abs_section (p->sec) |
7432 | && bfd_is_abs_section (p->sec->output_section)) | |
7433 | { | |
7434 | /* Input section has been discarded, either because | |
7435 | it is a copy of a linkonce section or due to | |
7436 | linker script /DISCARD/, so we'll be discarding | |
7437 | the relocs too. */ | |
7438 | } | |
248866a8 | 7439 | else if (p->count != 0) |
ec338859 AM |
7440 | { |
7441 | srel = elf_section_data (p->sec)->sreloc; | |
eea6121a | 7442 | srel->size += p->count * sizeof (Elf64_External_Rela); |
248866a8 AM |
7443 | if ((p->sec->output_section->flags & SEC_READONLY) != 0) |
7444 | info->flags |= DF_TEXTREL; | |
ec338859 | 7445 | } |
65f38f15 AM |
7446 | } |
7447 | } | |
7448 | ||
411e1bfb AM |
7449 | lgot_ents = elf_local_got_ents (ibfd); |
7450 | if (!lgot_ents) | |
65f38f15 AM |
7451 | continue; |
7452 | ||
7453 | symtab_hdr = &elf_tdata (ibfd)->symtab_hdr; | |
7454 | locsymcount = symtab_hdr->sh_info; | |
411e1bfb | 7455 | end_lgot_ents = lgot_ents + locsymcount; |
e7b938ca | 7456 | lgot_masks = (char *) end_lgot_ents; |
e717da7e AM |
7457 | s = ppc64_elf_tdata (ibfd)->got; |
7458 | srel = ppc64_elf_tdata (ibfd)->relgot; | |
e7b938ca | 7459 | for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks) |
65f38f15 | 7460 | { |
411e1bfb AM |
7461 | struct got_entry *ent; |
7462 | ||
7463 | for (ent = *lgot_ents; ent != NULL; ent = ent->next) | |
7464 | if (ent->got.refcount > 0) | |
7465 | { | |
e7b938ca | 7466 | if ((ent->tls_type & *lgot_masks & TLS_LD) != 0) |
411e1bfb | 7467 | { |
e717da7e | 7468 | if (ppc64_tlsld_got (ibfd)->offset == (bfd_vma) -1) |
411e1bfb | 7469 | { |
eea6121a AM |
7470 | ppc64_tlsld_got (ibfd)->offset = s->size; |
7471 | s->size += 16; | |
411e1bfb | 7472 | if (info->shared) |
eea6121a | 7473 | srel->size += sizeof (Elf64_External_Rela); |
411e1bfb | 7474 | } |
e717da7e | 7475 | ent->got.offset = ppc64_tlsld_got (ibfd)->offset; |
411e1bfb AM |
7476 | } |
7477 | else | |
7478 | { | |
eea6121a | 7479 | ent->got.offset = s->size; |
e7b938ca | 7480 | if ((ent->tls_type & *lgot_masks & TLS_GD) != 0) |
411e1bfb | 7481 | { |
eea6121a | 7482 | s->size += 16; |
411e1bfb | 7483 | if (info->shared) |
eea6121a | 7484 | srel->size += 2 * sizeof (Elf64_External_Rela); |
411e1bfb AM |
7485 | } |
7486 | else | |
7487 | { | |
eea6121a | 7488 | s->size += 8; |
411e1bfb | 7489 | if (info->shared) |
eea6121a | 7490 | srel->size += sizeof (Elf64_External_Rela); |
411e1bfb AM |
7491 | } |
7492 | } | |
7493 | } | |
7494 | else | |
7495 | ent->got.offset = (bfd_vma) -1; | |
65f38f15 AM |
7496 | } |
7497 | } | |
7498 | ||
7499 | /* Allocate global sym .plt and .got entries, and space for global | |
7500 | sym dynamic relocs. */ | |
4ce794b7 | 7501 | elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info); |
65f38f15 AM |
7502 | |
7503 | /* We now have determined the sizes of the various dynamic sections. | |
7504 | Allocate memory for them. */ | |
b34976b6 | 7505 | relocs = FALSE; |
65f38f15 AM |
7506 | for (s = dynobj->sections; s != NULL; s = s->next) |
7507 | { | |
7508 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
7509 | continue; | |
7510 | ||
4ce794b7 | 7511 | if (s == htab->brlt || s == htab->relbrlt) |
721956f4 AM |
7512 | /* These haven't been allocated yet; don't strip. */ |
7513 | continue; | |
e717da7e AM |
7514 | else if (s == htab->got |
7515 | || s == htab->plt | |
4ce794b7 | 7516 | || s == htab->glink) |
65f38f15 AM |
7517 | { |
7518 | /* Strip this section if we don't need it; see the | |
7519 | comment below. */ | |
5bd4f169 | 7520 | } |
65f38f15 | 7521 | else if (strncmp (bfd_get_section_name (dynobj, s), ".rela", 5) == 0) |
5bd4f169 | 7522 | { |
eea6121a | 7523 | if (s->size == 0) |
5bd4f169 AM |
7524 | { |
7525 | /* If we don't need this section, strip it from the | |
7526 | output file. This is mostly to handle .rela.bss and | |
7527 | .rela.plt. We must create both sections in | |
7528 | create_dynamic_sections, because they must be created | |
7529 | before the linker maps input sections to output | |
7530 | sections. The linker does that before | |
7531 | adjust_dynamic_symbol is called, and it is that | |
7532 | function which decides whether anything needs to go | |
7533 | into these sections. */ | |
5bd4f169 AM |
7534 | } |
7535 | else | |
7536 | { | |
4ce794b7 | 7537 | if (s != htab->relplt) |
b34976b6 | 7538 | relocs = TRUE; |
5bd4f169 AM |
7539 | |
7540 | /* We use the reloc_count field as a counter if we need | |
7541 | to copy relocs into the output file. */ | |
7542 | s->reloc_count = 0; | |
7543 | } | |
7544 | } | |
65f38f15 | 7545 | else |
5bd4f169 AM |
7546 | { |
7547 | /* It's not one of our sections, so don't allocate space. */ | |
7548 | continue; | |
7549 | } | |
7550 | ||
eea6121a | 7551 | if (s->size == 0) |
5bd4f169 AM |
7552 | { |
7553 | _bfd_strip_section_from_output (info, s); | |
7554 | continue; | |
7555 | } | |
7556 | ||
5f333394 | 7557 | /* .plt is in the bss section. We don't initialise it. */ |
680a3378 | 7558 | if (s == htab->plt) |
5f333394 AM |
7559 | continue; |
7560 | ||
65f38f15 AM |
7561 | /* Allocate memory for the section contents. We use bfd_zalloc |
7562 | here in case unused entries are not reclaimed before the | |
7563 | section's contents are written out. This should not happen, | |
411e1bfb AM |
7564 | but this way if it does we get a R_PPC64_NONE reloc in .rela |
7565 | sections instead of garbage. | |
7566 | We also rely on the section contents being zero when writing | |
7567 | the GOT. */ | |
eea6121a | 7568 | s->contents = bfd_zalloc (dynobj, s->size); |
65f38f15 | 7569 | if (s->contents == NULL) |
b34976b6 | 7570 | return FALSE; |
5bd4f169 AM |
7571 | } |
7572 | ||
e717da7e AM |
7573 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) |
7574 | { | |
ee75fd95 | 7575 | if (!is_ppc64_elf_target (ibfd->xvec)) |
7b53ace3 AM |
7576 | continue; |
7577 | ||
e717da7e AM |
7578 | s = ppc64_elf_tdata (ibfd)->got; |
7579 | if (s != NULL && s != htab->got) | |
7580 | { | |
eea6121a | 7581 | if (s->size == 0) |
e717da7e AM |
7582 | _bfd_strip_section_from_output (info, s); |
7583 | else | |
7584 | { | |
eea6121a | 7585 | s->contents = bfd_zalloc (ibfd, s->size); |
e717da7e AM |
7586 | if (s->contents == NULL) |
7587 | return FALSE; | |
7588 | } | |
7589 | } | |
7590 | s = ppc64_elf_tdata (ibfd)->relgot; | |
7591 | if (s != NULL) | |
7592 | { | |
eea6121a | 7593 | if (s->size == 0) |
e717da7e AM |
7594 | _bfd_strip_section_from_output (info, s); |
7595 | else | |
7596 | { | |
eea6121a | 7597 | s->contents = bfd_zalloc (ibfd, s->size); |
e717da7e AM |
7598 | if (s->contents == NULL) |
7599 | return FALSE; | |
7600 | relocs = TRUE; | |
7601 | s->reloc_count = 0; | |
7602 | } | |
7603 | } | |
7604 | } | |
7605 | ||
e86ce104 | 7606 | if (htab->elf.dynamic_sections_created) |
5bd4f169 AM |
7607 | { |
7608 | /* Add some entries to the .dynamic section. We fill in the | |
7609 | values later, in ppc64_elf_finish_dynamic_sections, but we | |
7610 | must add the entries now so that we get the correct size for | |
7611 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
7612 | dynamic linker and used by the debugger. */ | |
dc810e39 | 7613 | #define add_dynamic_entry(TAG, VAL) \ |
5a580b3a | 7614 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) |
dc810e39 | 7615 | |
36af4a4e | 7616 | if (info->executable) |
5bd4f169 | 7617 | { |
dc810e39 | 7618 | if (!add_dynamic_entry (DT_DEBUG, 0)) |
b34976b6 | 7619 | return FALSE; |
5bd4f169 AM |
7620 | } |
7621 | ||
eea6121a | 7622 | if (htab->plt != NULL && htab->plt->size != 0) |
5bd4f169 | 7623 | { |
dc810e39 AM |
7624 | if (!add_dynamic_entry (DT_PLTGOT, 0) |
7625 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
7626 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) | |
5d1634d7 AM |
7627 | || !add_dynamic_entry (DT_JMPREL, 0) |
7628 | || !add_dynamic_entry (DT_PPC64_GLINK, 0)) | |
b34976b6 | 7629 | return FALSE; |
5bd4f169 AM |
7630 | } |
7631 | ||
19397422 AM |
7632 | if (NO_OPD_RELOCS) |
7633 | { | |
7634 | if (!add_dynamic_entry (DT_PPC64_OPD, 0) | |
7635 | || !add_dynamic_entry (DT_PPC64_OPDSZ, 0)) | |
b34976b6 | 7636 | return FALSE; |
19397422 AM |
7637 | } |
7638 | ||
5bd4f169 AM |
7639 | if (relocs) |
7640 | { | |
dc810e39 AM |
7641 | if (!add_dynamic_entry (DT_RELA, 0) |
7642 | || !add_dynamic_entry (DT_RELASZ, 0) | |
7643 | || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela))) | |
b34976b6 | 7644 | return FALSE; |
5bd4f169 | 7645 | |
65f38f15 AM |
7646 | /* If any dynamic relocs apply to a read-only section, |
7647 | then we need a DT_TEXTREL entry. */ | |
248866a8 | 7648 | if ((info->flags & DF_TEXTREL) == 0) |
4ce794b7 | 7649 | elf_link_hash_traverse (&htab->elf, readonly_dynrelocs, info); |
5bd4f169 | 7650 | |
65f38f15 | 7651 | if ((info->flags & DF_TEXTREL) != 0) |
5bd4f169 | 7652 | { |
65f38f15 | 7653 | if (!add_dynamic_entry (DT_TEXTREL, 0)) |
b34976b6 | 7654 | return FALSE; |
5bd4f169 | 7655 | } |
5bd4f169 | 7656 | } |
5bd4f169 | 7657 | } |
65f38f15 | 7658 | #undef add_dynamic_entry |
5bd4f169 | 7659 | |
b34976b6 | 7660 | return TRUE; |
5bd4f169 AM |
7661 | } |
7662 | ||
721956f4 | 7663 | /* Determine the type of stub needed, if any, for a call. */ |
5bd4f169 | 7664 | |
4ce794b7 AM |
7665 | static inline enum ppc_stub_type |
7666 | ppc_type_of_stub (asection *input_sec, | |
7667 | const Elf_Internal_Rela *rel, | |
7668 | struct ppc_link_hash_entry **hash, | |
7669 | bfd_vma destination) | |
5bd4f169 | 7670 | { |
721956f4 AM |
7671 | struct ppc_link_hash_entry *h = *hash; |
7672 | bfd_vma location; | |
7673 | bfd_vma branch_offset; | |
7674 | bfd_vma max_branch_offset; | |
4ce794b7 | 7675 | enum elf_ppc64_reloc_type r_type; |
5bd4f169 | 7676 | |
721956f4 AM |
7677 | if (h != NULL) |
7678 | { | |
7679 | if (h->oh != NULL | |
8387904d AM |
7680 | && h->oh->is_func_descriptor) |
7681 | h = h->oh; | |
7682 | ||
7683 | if (h->elf.dynindx != -1) | |
5bd4f169 | 7684 | { |
411e1bfb | 7685 | struct plt_entry *ent; |
8387904d AM |
7686 | |
7687 | for (ent = h->elf.plt.plist; ent != NULL; ent = ent->next) | |
411e1bfb AM |
7688 | if (ent->addend == rel->r_addend |
7689 | && ent->plt.offset != (bfd_vma) -1) | |
7690 | { | |
8387904d | 7691 | *hash = h; |
411e1bfb AM |
7692 | return ppc_stub_plt_call; |
7693 | } | |
5bd4f169 AM |
7694 | } |
7695 | ||
ee7de3e6 AM |
7696 | if (!(h->elf.root.type == bfd_link_hash_defined |
7697 | || h->elf.root.type == bfd_link_hash_defweak) | |
7698 | || h->elf.root.u.def.section->output_section == NULL) | |
721956f4 | 7699 | return ppc_stub_none; |
5d1634d7 | 7700 | } |
5d1634d7 | 7701 | |
721956f4 AM |
7702 | /* Determine where the call point is. */ |
7703 | location = (input_sec->output_offset | |
7704 | + input_sec->output_section->vma | |
7705 | + rel->r_offset); | |
5d1634d7 | 7706 | |
721956f4 AM |
7707 | branch_offset = destination - location; |
7708 | r_type = ELF64_R_TYPE (rel->r_info); | |
5d1634d7 | 7709 | |
721956f4 AM |
7710 | /* Determine if a long branch stub is needed. */ |
7711 | max_branch_offset = 1 << 25; | |
4ce794b7 | 7712 | if (r_type != R_PPC64_REL24) |
721956f4 | 7713 | max_branch_offset = 1 << 15; |
5d1634d7 | 7714 | |
721956f4 AM |
7715 | if (branch_offset + max_branch_offset >= 2 * max_branch_offset) |
7716 | /* We need a stub. Figure out whether a long_branch or plt_branch | |
7717 | is needed later. */ | |
7718 | return ppc_stub_long_branch; | |
5d1634d7 | 7719 | |
721956f4 | 7720 | return ppc_stub_none; |
5d1634d7 AM |
7721 | } |
7722 | ||
7723 | /* Build a .plt call stub. */ | |
7724 | ||
4ce794b7 AM |
7725 | static inline bfd_byte * |
7726 | build_plt_stub (bfd *obfd, bfd_byte *p, int offset) | |
5d1634d7 AM |
7727 | { |
7728 | #define PPC_LO(v) ((v) & 0xffff) | |
7729 | #define PPC_HI(v) (((v) >> 16) & 0xffff) | |
7730 | #define PPC_HA(v) PPC_HI ((v) + 0x8000) | |
7731 | ||
5d1634d7 | 7732 | bfd_put_32 (obfd, ADDIS_R12_R2 | PPC_HA (offset), p), p += 4; |
ad8e1ba5 | 7733 | bfd_put_32 (obfd, STD_R2_40R1, p), p += 4; |
5d1634d7 AM |
7734 | bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset), p), p += 4; |
7735 | if (PPC_HA (offset + 8) != PPC_HA (offset)) | |
ad8e1ba5 | 7736 | bfd_put_32 (obfd, ADDIS_R12_R12 | 1, p), p += 4; |
5d1634d7 AM |
7737 | offset += 8; |
7738 | bfd_put_32 (obfd, LD_R2_0R12 | PPC_LO (offset), p), p += 4; | |
7739 | if (PPC_HA (offset + 8) != PPC_HA (offset)) | |
ad8e1ba5 | 7740 | bfd_put_32 (obfd, ADDIS_R12_R12 | 1, p), p += 4; |
5d1634d7 AM |
7741 | offset += 8; |
7742 | bfd_put_32 (obfd, MTCTR_R11, p), p += 4; | |
7743 | bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset), p), p += 4; | |
7744 | bfd_put_32 (obfd, BCTR, p), p += 4; | |
7745 | return p; | |
7746 | } | |
7747 | ||
b34976b6 | 7748 | static bfd_boolean |
4ce794b7 | 7749 | ppc_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg) |
5d1634d7 | 7750 | { |
721956f4 AM |
7751 | struct ppc_stub_hash_entry *stub_entry; |
7752 | struct ppc_branch_hash_entry *br_entry; | |
5d1634d7 AM |
7753 | struct bfd_link_info *info; |
7754 | struct ppc_link_hash_table *htab; | |
721956f4 AM |
7755 | bfd_byte *loc; |
7756 | bfd_byte *p; | |
7757 | unsigned int indx; | |
411e1bfb | 7758 | struct plt_entry *ent; |
ee75fd95 | 7759 | bfd_vma dest, off; |
721956f4 | 7760 | int size; |
5d1634d7 | 7761 | |
721956f4 AM |
7762 | /* Massage our args to the form they really have. */ |
7763 | stub_entry = (struct ppc_stub_hash_entry *) gen_entry; | |
4ce794b7 | 7764 | info = in_arg; |
5d1634d7 | 7765 | |
5d1634d7 AM |
7766 | htab = ppc_hash_table (info); |
7767 | ||
721956f4 | 7768 | /* Make a note of the offset within the stubs for this entry. */ |
eea6121a | 7769 | stub_entry->stub_offset = stub_entry->stub_sec->size; |
97b639ba | 7770 | loc = stub_entry->stub_sec->contents + stub_entry->stub_offset; |
721956f4 | 7771 | |
4ce794b7 | 7772 | htab->stub_count[stub_entry->stub_type - 1] += 1; |
721956f4 | 7773 | switch (stub_entry->stub_type) |
5d1634d7 | 7774 | { |
721956f4 | 7775 | case ppc_stub_long_branch: |
ad8e1ba5 | 7776 | case ppc_stub_long_branch_r2off: |
721956f4 | 7777 | /* Branches are relative. This is where we are going to. */ |
ee75fd95 AM |
7778 | off = dest = (stub_entry->target_value |
7779 | + stub_entry->target_section->output_offset | |
7780 | + stub_entry->target_section->output_section->vma); | |
5d1634d7 | 7781 | |
721956f4 AM |
7782 | /* And this is where we are coming from. */ |
7783 | off -= (stub_entry->stub_offset | |
97b639ba AM |
7784 | + stub_entry->stub_sec->output_offset |
7785 | + stub_entry->stub_sec->output_section->vma); | |
e86ce104 | 7786 | |
ad8e1ba5 AM |
7787 | if (stub_entry->stub_type != ppc_stub_long_branch_r2off) |
7788 | size = 4; | |
7789 | else | |
7790 | { | |
7791 | bfd_vma r2off; | |
7792 | ||
7793 | r2off = (htab->stub_group[stub_entry->target_section->id].toc_off | |
7794 | - htab->stub_group[stub_entry->id_sec->id].toc_off); | |
97b639ba | 7795 | bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc); |
ad8e1ba5 | 7796 | loc += 4; |
97b639ba | 7797 | bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc); |
ad8e1ba5 | 7798 | loc += 4; |
97b639ba | 7799 | bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc); |
ad8e1ba5 AM |
7800 | loc += 4; |
7801 | off -= 12; | |
7802 | size = 16; | |
7803 | } | |
97b639ba | 7804 | bfd_put_32 (htab->stub_bfd, B_DOT | (off & 0x3fffffc), loc); |
ad8e1ba5 AM |
7805 | |
7806 | BFD_ASSERT (off + (1 << 25) < (bfd_vma) (1 << 26)); | |
ee75fd95 AM |
7807 | |
7808 | if (info->emitrelocations) | |
7809 | { | |
7810 | Elf_Internal_Rela *relocs, *r; | |
7811 | struct bfd_elf_section_data *elfsec_data; | |
7812 | ||
7813 | elfsec_data = elf_section_data (stub_entry->stub_sec); | |
7814 | relocs = elfsec_data->relocs; | |
7815 | if (relocs == NULL) | |
7816 | { | |
7817 | bfd_size_type relsize; | |
7818 | relsize = stub_entry->stub_sec->reloc_count * sizeof (*relocs); | |
7819 | relocs = bfd_alloc (htab->stub_bfd, relsize); | |
7820 | if (relocs == NULL) | |
7821 | return FALSE; | |
7822 | elfsec_data->relocs = relocs; | |
7823 | elfsec_data->rel_hdr.sh_size = relsize; | |
7824 | elfsec_data->rel_hdr.sh_entsize = 24; | |
7825 | stub_entry->stub_sec->reloc_count = 0; | |
7826 | } | |
7827 | r = relocs + stub_entry->stub_sec->reloc_count; | |
7828 | stub_entry->stub_sec->reloc_count += 1; | |
7829 | r->r_offset = loc - stub_entry->stub_sec->contents; | |
7830 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL24); | |
7831 | r->r_addend = dest; | |
7832 | if (stub_entry->h != NULL) | |
7833 | { | |
7834 | struct elf_link_hash_entry **hashes; | |
7835 | unsigned long symndx; | |
7836 | struct ppc_link_hash_entry *h; | |
7837 | ||
7838 | hashes = elf_sym_hashes (htab->stub_bfd); | |
7839 | if (hashes == NULL) | |
7840 | { | |
7841 | bfd_size_type hsize; | |
7842 | ||
7843 | hsize = (htab->stub_globals + 1) * sizeof (*hashes); | |
7844 | hashes = bfd_zalloc (htab->stub_bfd, hsize); | |
7845 | if (hashes == NULL) | |
7846 | return FALSE; | |
7847 | elf_sym_hashes (htab->stub_bfd) = hashes; | |
7848 | htab->stub_globals = 1; | |
7849 | } | |
7850 | symndx = htab->stub_globals++; | |
7851 | h = stub_entry->h; | |
7852 | hashes[symndx] = &h->elf; | |
7853 | r->r_info = ELF64_R_INFO (symndx, R_PPC64_REL24); | |
7854 | if (h->oh != NULL && h->oh->is_func) | |
7855 | h = h->oh; | |
7856 | if (h->elf.root.u.def.section != stub_entry->target_section) | |
7857 | /* H is an opd symbol. The addend must be zero. */ | |
7858 | r->r_addend = 0; | |
7859 | else | |
7860 | { | |
7861 | off = (h->elf.root.u.def.value | |
7862 | + h->elf.root.u.def.section->output_offset | |
7863 | + h->elf.root.u.def.section->output_section->vma); | |
7864 | r->r_addend -= off; | |
7865 | } | |
7866 | } | |
7867 | } | |
721956f4 | 7868 | break; |
e86ce104 | 7869 | |
721956f4 | 7870 | case ppc_stub_plt_branch: |
ad8e1ba5 | 7871 | case ppc_stub_plt_branch_r2off: |
721956f4 AM |
7872 | br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table, |
7873 | stub_entry->root.string + 9, | |
b34976b6 | 7874 | FALSE, FALSE); |
721956f4 AM |
7875 | if (br_entry == NULL) |
7876 | { | |
7877 | (*_bfd_error_handler) (_("can't find branch stub `%s'"), | |
7878 | stub_entry->root.string + 9); | |
b34976b6 AM |
7879 | htab->stub_error = TRUE; |
7880 | return FALSE; | |
721956f4 AM |
7881 | } |
7882 | ||
7883 | off = (stub_entry->target_value | |
7884 | + stub_entry->target_section->output_offset | |
7885 | + stub_entry->target_section->output_section->vma); | |
7886 | ||
4ce794b7 AM |
7887 | bfd_put_64 (htab->brlt->owner, off, |
7888 | htab->brlt->contents + br_entry->offset); | |
721956f4 | 7889 | |
ee75fd95 | 7890 | if (htab->relbrlt != NULL) |
721956f4 AM |
7891 | { |
7892 | /* Create a reloc for the branch lookup table entry. */ | |
7893 | Elf_Internal_Rela rela; | |
ad8e1ba5 | 7894 | bfd_byte *rl; |
5d1634d7 | 7895 | |
721956f4 | 7896 | rela.r_offset = (br_entry->offset |
4ce794b7 AM |
7897 | + htab->brlt->output_offset |
7898 | + htab->brlt->output_section->vma); | |
721956f4 AM |
7899 | rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); |
7900 | rela.r_addend = off; | |
7901 | ||
4ce794b7 AM |
7902 | rl = htab->relbrlt->contents; |
7903 | rl += htab->relbrlt->reloc_count++ * sizeof (Elf64_External_Rela); | |
7904 | bfd_elf64_swap_reloca_out (htab->relbrlt->owner, &rela, rl); | |
721956f4 AM |
7905 | } |
7906 | ||
7907 | off = (br_entry->offset | |
4ce794b7 AM |
7908 | + htab->brlt->output_offset |
7909 | + htab->brlt->output_section->vma | |
7910 | - elf_gp (htab->brlt->output_section->owner) | |
ad8e1ba5 | 7911 | - htab->stub_group[stub_entry->id_sec->id].toc_off); |
721956f4 | 7912 | |
ad8e1ba5 | 7913 | if (off + 0x80008000 > 0xffffffff || (off & 7) != 0) |
5d1634d7 AM |
7914 | { |
7915 | (*_bfd_error_handler) | |
e86ce104 | 7916 | (_("linkage table error against `%s'"), |
721956f4 | 7917 | stub_entry->root.string); |
5d1634d7 | 7918 | bfd_set_error (bfd_error_bad_value); |
b34976b6 AM |
7919 | htab->stub_error = TRUE; |
7920 | return FALSE; | |
5d1634d7 | 7921 | } |
41bd81ab | 7922 | |
721956f4 | 7923 | indx = off; |
ad8e1ba5 AM |
7924 | if (stub_entry->stub_type != ppc_stub_plt_branch_r2off) |
7925 | { | |
97b639ba | 7926 | bfd_put_32 (htab->stub_bfd, ADDIS_R12_R2 | PPC_HA (indx), loc); |
ad8e1ba5 | 7927 | loc += 4; |
97b639ba | 7928 | bfd_put_32 (htab->stub_bfd, LD_R11_0R12 | PPC_LO (indx), loc); |
ad8e1ba5 AM |
7929 | size = 16; |
7930 | } | |
7931 | else | |
7932 | { | |
7933 | bfd_vma r2off; | |
7934 | ||
7935 | r2off = (htab->stub_group[stub_entry->target_section->id].toc_off | |
7936 | - htab->stub_group[stub_entry->id_sec->id].toc_off); | |
97b639ba | 7937 | bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc); |
ad8e1ba5 | 7938 | loc += 4; |
97b639ba | 7939 | bfd_put_32 (htab->stub_bfd, ADDIS_R12_R2 | PPC_HA (indx), loc); |
ad8e1ba5 | 7940 | loc += 4; |
97b639ba | 7941 | bfd_put_32 (htab->stub_bfd, LD_R11_0R12 | PPC_LO (indx), loc); |
ad8e1ba5 | 7942 | loc += 4; |
97b639ba | 7943 | bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc); |
ad8e1ba5 | 7944 | loc += 4; |
97b639ba | 7945 | bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc); |
ad8e1ba5 AM |
7946 | size = 28; |
7947 | } | |
7948 | loc += 4; | |
97b639ba | 7949 | bfd_put_32 (htab->stub_bfd, MTCTR_R11, loc); |
ad8e1ba5 | 7950 | loc += 4; |
97b639ba | 7951 | bfd_put_32 (htab->stub_bfd, BCTR, loc); |
721956f4 | 7952 | break; |
5d1634d7 | 7953 | |
721956f4 | 7954 | case ppc_stub_plt_call: |
c862ae31 AM |
7955 | /* Do the best we can for shared libraries built without |
7956 | exporting ".foo" for each "foo". This can happen when symbol | |
7957 | versioning scripts strip all bar a subset of symbols. */ | |
8387904d AM |
7958 | if (stub_entry->h->oh != NULL |
7959 | && stub_entry->h->oh->elf.root.type != bfd_link_hash_defined | |
34814b9f | 7960 | && stub_entry->h->oh->elf.root.type != bfd_link_hash_defweak) |
c862ae31 AM |
7961 | { |
7962 | /* Point the symbol at the stub. There may be multiple stubs, | |
7963 | we don't really care; The main thing is to make this sym | |
8f3bab57 AM |
7964 | defined somewhere. Maybe defining the symbol in the stub |
7965 | section is a silly idea. If we didn't do this, htab->top_id | |
7966 | could disappear. */ | |
34814b9f AM |
7967 | stub_entry->h->oh->elf.root.type = bfd_link_hash_defined; |
7968 | stub_entry->h->oh->elf.root.u.def.section = stub_entry->stub_sec; | |
7969 | stub_entry->h->oh->elf.root.u.def.value = stub_entry->stub_offset; | |
c862ae31 AM |
7970 | } |
7971 | ||
721956f4 | 7972 | /* Now build the stub. */ |
411e1bfb AM |
7973 | off = (bfd_vma) -1; |
7974 | for (ent = stub_entry->h->elf.plt.plist; ent != NULL; ent = ent->next) | |
7975 | if (ent->addend == stub_entry->addend) | |
7976 | { | |
7977 | off = ent->plt.offset; | |
7978 | break; | |
7979 | } | |
721956f4 AM |
7980 | if (off >= (bfd_vma) -2) |
7981 | abort (); | |
7982 | ||
7983 | off &= ~ (bfd_vma) 1; | |
4ce794b7 AM |
7984 | off += (htab->plt->output_offset |
7985 | + htab->plt->output_section->vma | |
7986 | - elf_gp (htab->plt->output_section->owner) | |
ad8e1ba5 | 7987 | - htab->stub_group[stub_entry->id_sec->id].toc_off); |
721956f4 | 7988 | |
ad8e1ba5 | 7989 | if (off + 0x80008000 > 0xffffffff || (off & 7) != 0) |
721956f4 AM |
7990 | { |
7991 | (*_bfd_error_handler) | |
7992 | (_("linkage table error against `%s'"), | |
7993 | stub_entry->h->elf.root.root.string); | |
7994 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 AM |
7995 | htab->stub_error = TRUE; |
7996 | return FALSE; | |
721956f4 AM |
7997 | } |
7998 | ||
97b639ba | 7999 | p = build_plt_stub (htab->stub_bfd, loc, off); |
721956f4 AM |
8000 | size = p - loc; |
8001 | break; | |
8002 | ||
8003 | default: | |
8004 | BFD_FAIL (); | |
b34976b6 | 8005 | return FALSE; |
721956f4 AM |
8006 | } |
8007 | ||
eea6121a | 8008 | stub_entry->stub_sec->size += size; |
97b639ba | 8009 | |
ee75fd95 | 8010 | if (htab->emit_stub_syms) |
97b639ba AM |
8011 | { |
8012 | struct elf_link_hash_entry *h; | |
ee75fd95 AM |
8013 | size_t len1, len2; |
8014 | char *name; | |
8015 | const char *const stub_str[] = { "long_branch", | |
8016 | "long_branch_r2off", | |
8017 | "plt_branch", | |
8018 | "plt_branch_r2off", | |
8019 | "plt_call" }; | |
8020 | ||
8021 | len1 = strlen (stub_str[stub_entry->stub_type - 1]); | |
8022 | len2 = strlen (stub_entry->root.string); | |
8023 | name = bfd_malloc (len1 + len2 + 2); | |
8024 | if (name == NULL) | |
8025 | return FALSE; | |
8026 | memcpy (name, stub_entry->root.string, 9); | |
8027 | memcpy (name + 9, stub_str[stub_entry->stub_type - 1], len1); | |
8028 | memcpy (name + len1 + 9, stub_entry->root.string + 8, len2 - 8 + 1); | |
8029 | h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE); | |
97b639ba AM |
8030 | if (h == NULL) |
8031 | return FALSE; | |
8032 | if (h->root.type == bfd_link_hash_new) | |
8033 | { | |
8034 | h->root.type = bfd_link_hash_defined; | |
8035 | h->root.u.def.section = stub_entry->stub_sec; | |
8036 | h->root.u.def.value = stub_entry->stub_offset; | |
f5385ebf AM |
8037 | h->ref_regular = 1; |
8038 | h->def_regular = 1; | |
8039 | h->ref_regular_nonweak = 1; | |
8040 | h->forced_local = 1; | |
8041 | h->non_elf = 0; | |
97b639ba AM |
8042 | } |
8043 | } | |
8044 | ||
b34976b6 | 8045 | return TRUE; |
721956f4 AM |
8046 | } |
8047 | ||
8048 | /* As above, but don't actually build the stub. Just bump offset so | |
8049 | we know stub section sizes, and select plt_branch stubs where | |
8050 | long_branch stubs won't do. */ | |
8051 | ||
b34976b6 | 8052 | static bfd_boolean |
4ce794b7 | 8053 | ppc_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg) |
721956f4 AM |
8054 | { |
8055 | struct ppc_stub_hash_entry *stub_entry; | |
63bc6f6c | 8056 | struct bfd_link_info *info; |
721956f4 AM |
8057 | struct ppc_link_hash_table *htab; |
8058 | bfd_vma off; | |
8059 | int size; | |
8060 | ||
8061 | /* Massage our args to the form they really have. */ | |
8062 | stub_entry = (struct ppc_stub_hash_entry *) gen_entry; | |
63bc6f6c AM |
8063 | info = in_arg; |
8064 | ||
8065 | htab = ppc_hash_table (info); | |
721956f4 AM |
8066 | |
8067 | if (stub_entry->stub_type == ppc_stub_plt_call) | |
8068 | { | |
411e1bfb | 8069 | struct plt_entry *ent; |
58ac9f71 | 8070 | off = (bfd_vma) -1; |
411e1bfb AM |
8071 | for (ent = stub_entry->h->elf.plt.plist; ent != NULL; ent = ent->next) |
8072 | if (ent->addend == stub_entry->addend) | |
8073 | { | |
8074 | off = ent->plt.offset & ~(bfd_vma) 1; | |
8075 | break; | |
8076 | } | |
58ac9f71 | 8077 | if (off >= (bfd_vma) -2) |
411e1bfb | 8078 | abort (); |
4ce794b7 AM |
8079 | off += (htab->plt->output_offset |
8080 | + htab->plt->output_section->vma | |
8081 | - elf_gp (htab->plt->output_section->owner) | |
ad8e1ba5 | 8082 | - htab->stub_group[stub_entry->id_sec->id].toc_off); |
721956f4 | 8083 | |
ad8e1ba5 | 8084 | size = PLT_CALL_STUB_SIZE; |
4ce794b7 | 8085 | if (PPC_HA (off + 16) != PPC_HA (off)) |
721956f4 AM |
8086 | size += 4; |
8087 | } | |
8088 | else | |
8089 | { | |
ad8e1ba5 AM |
8090 | /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off |
8091 | variants. */ | |
721956f4 AM |
8092 | off = (stub_entry->target_value |
8093 | + stub_entry->target_section->output_offset | |
8094 | + stub_entry->target_section->output_section->vma); | |
eea6121a | 8095 | off -= (stub_entry->stub_sec->size |
721956f4 AM |
8096 | + stub_entry->stub_sec->output_offset |
8097 | + stub_entry->stub_sec->output_section->vma); | |
8098 | ||
ad8e1ba5 AM |
8099 | /* Reset the stub type from the plt variant in case we now |
8100 | can reach with a shorter stub. */ | |
8101 | if (stub_entry->stub_type >= ppc_stub_plt_branch) | |
8102 | stub_entry->stub_type += ppc_stub_long_branch - ppc_stub_plt_branch; | |
8103 | ||
8104 | size = 4; | |
8105 | if (stub_entry->stub_type == ppc_stub_long_branch_r2off) | |
8106 | { | |
8107 | off -= 12; | |
8108 | size = 16; | |
8109 | } | |
8110 | ||
8111 | /* If the branch offset if too big, use a ppc_stub_plt_branch. */ | |
721956f4 AM |
8112 | if (off + (1 << 25) >= (bfd_vma) (1 << 26)) |
8113 | { | |
8114 | struct ppc_branch_hash_entry *br_entry; | |
8115 | ||
8116 | br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table, | |
8117 | stub_entry->root.string + 9, | |
b34976b6 | 8118 | TRUE, FALSE); |
721956f4 AM |
8119 | if (br_entry == NULL) |
8120 | { | |
8121 | (*_bfd_error_handler) (_("can't build branch stub `%s'"), | |
8122 | stub_entry->root.string + 9); | |
b34976b6 AM |
8123 | htab->stub_error = TRUE; |
8124 | return FALSE; | |
721956f4 AM |
8125 | } |
8126 | ||
8127 | if (br_entry->iter != htab->stub_iteration) | |
8128 | { | |
8129 | br_entry->iter = htab->stub_iteration; | |
eea6121a AM |
8130 | br_entry->offset = htab->brlt->size; |
8131 | htab->brlt->size += 8; | |
63bc6f6c | 8132 | |
ee75fd95 | 8133 | if (htab->relbrlt != NULL) |
eea6121a | 8134 | htab->relbrlt->size += sizeof (Elf64_External_Rela); |
721956f4 | 8135 | } |
ad8e1ba5 AM |
8136 | |
8137 | stub_entry->stub_type += ppc_stub_plt_branch - ppc_stub_long_branch; | |
721956f4 | 8138 | size = 16; |
ad8e1ba5 AM |
8139 | if (stub_entry->stub_type != ppc_stub_plt_branch) |
8140 | size = 28; | |
721956f4 | 8141 | } |
ee75fd95 AM |
8142 | |
8143 | if (info->emitrelocations | |
8144 | && (stub_entry->stub_type == ppc_stub_long_branch | |
8145 | || stub_entry->stub_type == ppc_stub_long_branch_r2off)) | |
8146 | stub_entry->stub_sec->reloc_count += 1; | |
721956f4 AM |
8147 | } |
8148 | ||
eea6121a | 8149 | stub_entry->stub_sec->size += size; |
b34976b6 | 8150 | return TRUE; |
721956f4 AM |
8151 | } |
8152 | ||
8153 | /* Set up various things so that we can make a list of input sections | |
8154 | for each output section included in the link. Returns -1 on error, | |
cedb70c5 | 8155 | 0 when no stubs will be needed, and 1 on success. */ |
721956f4 AM |
8156 | |
8157 | int | |
4c52953f AM |
8158 | ppc64_elf_setup_section_lists (bfd *output_bfd, |
8159 | struct bfd_link_info *info, | |
8160 | int no_multi_toc) | |
721956f4 AM |
8161 | { |
8162 | bfd *input_bfd; | |
734b6cf9 | 8163 | int top_id, top_index, id; |
721956f4 | 8164 | asection *section; |
734b6cf9 | 8165 | asection **input_list; |
721956f4 AM |
8166 | bfd_size_type amt; |
8167 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
8168 | ||
4c52953f AM |
8169 | htab->no_multi_toc = no_multi_toc; |
8170 | ||
4ce794b7 | 8171 | if (htab->brlt == NULL) |
721956f4 AM |
8172 | return 0; |
8173 | ||
1e2f5b6e | 8174 | /* Find the top input section id. */ |
3d6f9012 | 8175 | for (input_bfd = info->input_bfds, top_id = 3; |
721956f4 AM |
8176 | input_bfd != NULL; |
8177 | input_bfd = input_bfd->link_next) | |
8178 | { | |
721956f4 AM |
8179 | for (section = input_bfd->sections; |
8180 | section != NULL; | |
8181 | section = section->next) | |
8182 | { | |
8183 | if (top_id < section->id) | |
8184 | top_id = section->id; | |
8185 | } | |
8186 | } | |
721956f4 | 8187 | |
8f3bab57 | 8188 | htab->top_id = top_id; |
721956f4 | 8189 | amt = sizeof (struct map_stub) * (top_id + 1); |
4ce794b7 | 8190 | htab->stub_group = bfd_zmalloc (amt); |
721956f4 AM |
8191 | if (htab->stub_group == NULL) |
8192 | return -1; | |
8193 | ||
3d6f9012 AM |
8194 | /* Set toc_off for com, und, abs and ind sections. */ |
8195 | for (id = 0; id < 3; id++) | |
8196 | htab->stub_group[id].toc_off = TOC_BASE_OFF; | |
721956f4 | 8197 | |
3d6f9012 | 8198 | elf_gp (output_bfd) = htab->toc_curr = ppc64_elf_toc (output_bfd); |
734b6cf9 AM |
8199 | |
8200 | /* We can't use output_bfd->section_count here to find the top output | |
8201 | section index as some sections may have been removed, and | |
8202 | _bfd_strip_section_from_output doesn't renumber the indices. */ | |
8203 | for (section = output_bfd->sections, top_index = 0; | |
8204 | section != NULL; | |
8205 | section = section->next) | |
8206 | { | |
8207 | if (top_index < section->index) | |
8208 | top_index = section->index; | |
8209 | } | |
8210 | ||
8211 | htab->top_index = top_index; | |
8212 | amt = sizeof (asection *) * (top_index + 1); | |
4ce794b7 | 8213 | input_list = bfd_zmalloc (amt); |
734b6cf9 AM |
8214 | htab->input_list = input_list; |
8215 | if (input_list == NULL) | |
8216 | return -1; | |
8217 | ||
721956f4 AM |
8218 | return 1; |
8219 | } | |
8220 | ||
e717da7e AM |
8221 | /* The linker repeatedly calls this function for each TOC input section |
8222 | and linker generated GOT section. Group input bfds such that the toc | |
8223 | within a group is less than 64k in size. Will break with cute linker | |
8224 | scripts that play games with dot in the output toc section. */ | |
ad8e1ba5 AM |
8225 | |
8226 | void | |
4ce794b7 | 8227 | ppc64_elf_next_toc_section (struct bfd_link_info *info, asection *isec) |
ad8e1ba5 AM |
8228 | { |
8229 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
8230 | ||
4c52953f AM |
8231 | if (!htab->no_multi_toc) |
8232 | { | |
8233 | bfd_vma addr = isec->output_offset + isec->output_section->vma; | |
8234 | bfd_vma off = addr - htab->toc_curr; | |
8235 | ||
8236 | if (off + isec->size > 0x10000) | |
8237 | htab->toc_curr = addr; | |
99877b66 | 8238 | |
4c52953f AM |
8239 | elf_gp (isec->owner) = (htab->toc_curr |
8240 | - elf_gp (isec->output_section->owner) | |
8241 | + TOC_BASE_OFF); | |
8242 | } | |
ad8e1ba5 AM |
8243 | } |
8244 | ||
8245 | /* Called after the last call to the above function. */ | |
8246 | ||
8247 | void | |
4c52953f | 8248 | ppc64_elf_reinit_toc (bfd *output_bfd, struct bfd_link_info *info) |
ad8e1ba5 AM |
8249 | { |
8250 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
ad8e1ba5 | 8251 | |
4c52953f AM |
8252 | htab->multi_toc_needed = htab->toc_curr != elf_gp (output_bfd); |
8253 | ||
ad8e1ba5 AM |
8254 | /* toc_curr tracks the TOC offset used for code sections below in |
8255 | ppc64_elf_next_input_section. Start off at 0x8000. */ | |
3d6f9012 | 8256 | htab->toc_curr = TOC_BASE_OFF; |
ad8e1ba5 AM |
8257 | } |
8258 | ||
9b5ecbd0 AM |
8259 | /* No toc references were found in ISEC. If the code in ISEC makes no |
8260 | calls, then there's no need to use toc adjusting stubs when branching | |
8261 | into ISEC. Actually, indirect calls from ISEC are OK as they will | |
4c52953f AM |
8262 | load r2. Returns -1 on error, 0 for no stub needed, 1 for stub |
8263 | needed, and 2 if a cyclical call-graph was found but no other reason | |
8264 | for a stub was detected. If called from the top level, a return of | |
8265 | 2 means the same as a return of 0. */ | |
9b5ecbd0 AM |
8266 | |
8267 | static int | |
4ce794b7 | 8268 | toc_adjusting_stub_needed (struct bfd_link_info *info, asection *isec) |
9b5ecbd0 | 8269 | { |
4c52953f AM |
8270 | Elf_Internal_Rela *relstart, *rel; |
8271 | Elf_Internal_Sym *local_syms; | |
9b5ecbd0 | 8272 | int ret; |
4c52953f | 8273 | struct ppc_link_hash_table *htab; |
9b5ecbd0 | 8274 | |
772119ce AM |
8275 | /* We know none of our code bearing sections will need toc stubs. */ |
8276 | if ((isec->flags & SEC_LINKER_CREATED) != 0) | |
8277 | return 0; | |
8278 | ||
eea6121a | 8279 | if (isec->size == 0) |
082c50f8 AM |
8280 | return 0; |
8281 | ||
4c52953f AM |
8282 | if (isec->output_section == NULL) |
8283 | return 0; | |
8284 | ||
9b5ecbd0 AM |
8285 | /* Hack for linux kernel. .fixup contains branches, but only back to |
8286 | the function that hit an exception. */ | |
4c52953f AM |
8287 | if (strcmp (isec->name, ".fixup") == 0) |
8288 | return 0; | |
9b5ecbd0 | 8289 | |
4c52953f AM |
8290 | if (isec->reloc_count == 0) |
8291 | return 0; | |
8292 | ||
8293 | relstart = _bfd_elf_link_read_relocs (isec->owner, isec, NULL, NULL, | |
8294 | info->keep_memory); | |
8295 | if (relstart == NULL) | |
8296 | return -1; | |
8297 | ||
8298 | /* Look for branches to outside of this section. */ | |
8299 | local_syms = NULL; | |
8300 | ret = 0; | |
8301 | htab = ppc_hash_table (info); | |
8302 | for (rel = relstart; rel < relstart + isec->reloc_count; ++rel) | |
9b5ecbd0 | 8303 | { |
4c52953f AM |
8304 | enum elf_ppc64_reloc_type r_type; |
8305 | unsigned long r_symndx; | |
8306 | struct elf_link_hash_entry *h; | |
8307 | Elf_Internal_Sym *sym; | |
8308 | asection *sym_sec; | |
8309 | long *opd_adjust; | |
8310 | bfd_vma sym_value; | |
8311 | bfd_vma dest; | |
8312 | ||
8313 | r_type = ELF64_R_TYPE (rel->r_info); | |
8314 | if (r_type != R_PPC64_REL24 | |
8315 | && r_type != R_PPC64_REL14 | |
8316 | && r_type != R_PPC64_REL14_BRTAKEN | |
8317 | && r_type != R_PPC64_REL14_BRNTAKEN) | |
8318 | continue; | |
8319 | ||
8320 | r_symndx = ELF64_R_SYM (rel->r_info); | |
8321 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, r_symndx, | |
8322 | isec->owner)) | |
9b5ecbd0 | 8323 | { |
4c52953f AM |
8324 | ret = -1; |
8325 | break; | |
9b5ecbd0 | 8326 | } |
9b5ecbd0 | 8327 | |
4c52953f AM |
8328 | /* Ignore branches to undefined syms. */ |
8329 | if (sym_sec == NULL) | |
8330 | continue; | |
8331 | ||
8332 | /* Calls to dynamic lib functions go through a plt call stub | |
8333 | that uses r2. Assume branches to other sections not included | |
8334 | in the link need stubs too, to cover -R and absolute syms. */ | |
8335 | if (sym_sec->output_section == NULL) | |
8336 | { | |
8337 | ret = 1; | |
8338 | break; | |
8339 | } | |
8340 | ||
8341 | if (h == NULL) | |
8342 | sym_value = sym->st_value; | |
8343 | else | |
8344 | { | |
8345 | if (h->root.type != bfd_link_hash_defined | |
8346 | && h->root.type != bfd_link_hash_defweak) | |
8347 | abort (); | |
8348 | sym_value = h->root.u.def.value; | |
8349 | } | |
8350 | sym_value += rel->r_addend; | |
8351 | ||
8352 | /* If this branch reloc uses an opd sym, find the code section. */ | |
8353 | opd_adjust = get_opd_info (sym_sec); | |
8354 | if (opd_adjust != NULL) | |
8355 | { | |
8356 | ||
8357 | if (h == NULL) | |
8358 | { | |
8359 | long adjust; | |
8360 | ||
8361 | adjust = opd_adjust[sym->st_value / 8]; | |
8362 | if (adjust == -1) | |
8363 | /* Assume deleted functions won't ever be called. */ | |
8364 | continue; | |
8365 | sym_value += adjust; | |
8366 | } | |
8367 | ||
8368 | dest = opd_entry_value (sym_sec, sym_value, &sym_sec, NULL); | |
8369 | if (dest == (bfd_vma) -1) | |
8370 | continue; | |
8371 | } | |
8372 | else | |
8373 | dest = (sym_value | |
8374 | + sym_sec->output_offset | |
8375 | + sym_sec->output_section->vma); | |
8376 | ||
8377 | /* Ignore branch to self. */ | |
8378 | if (sym_sec == isec) | |
8379 | continue; | |
8380 | ||
8381 | /* If the called function uses the toc, we need a stub. */ | |
8382 | if (sym_sec->has_toc_reloc | |
8383 | || sym_sec->makes_toc_func_call) | |
8384 | { | |
8385 | ret = 1; | |
8386 | break; | |
8387 | } | |
8388 | ||
8389 | /* Assume any branch that needs a long branch stub might in fact | |
8390 | need a plt_branch stub. A plt_branch stub uses r2. */ | |
8391 | else if (dest - (isec->output_offset | |
8392 | + isec->output_section->vma | |
8393 | + rel->r_offset) + (1 << 25) >= (2 << 25)) | |
9b5ecbd0 AM |
8394 | { |
8395 | ret = 1; | |
8396 | break; | |
8397 | } | |
4c52953f AM |
8398 | |
8399 | /* If calling back to a section in the process of being tested, we | |
8400 | can't say for sure that no toc adjusting stubs are needed, so | |
8401 | don't return zero. */ | |
8402 | else if (sym_sec->call_check_in_progress) | |
8403 | ret = 2; | |
8404 | ||
8405 | /* Branches to another section that itself doesn't have any TOC | |
8406 | references are OK. Recursively call ourselves to check. */ | |
8407 | else if (sym_sec->id <= htab->top_id | |
8408 | && htab->stub_group[sym_sec->id].toc_off == 0) | |
8409 | { | |
8410 | int recur; | |
8411 | ||
8412 | /* Mark current section as indeterminate, so that other | |
8413 | sections that call back to current won't be marked as | |
8414 | known. */ | |
8415 | isec->call_check_in_progress = 1; | |
8416 | recur = toc_adjusting_stub_needed (info, sym_sec); | |
8417 | isec->call_check_in_progress = 0; | |
8418 | ||
8419 | if (recur < 0) | |
8420 | { | |
8421 | /* An error. Exit. */ | |
8422 | ret = -1; | |
8423 | break; | |
8424 | } | |
8425 | else if (recur <= 1) | |
8426 | { | |
8427 | /* Known result. Mark as checked and set section flag. */ | |
8428 | htab->stub_group[sym_sec->id].toc_off = 1; | |
8429 | if (recur != 0) | |
8430 | { | |
8431 | sym_sec->makes_toc_func_call = 1; | |
8432 | ret = 1; | |
8433 | break; | |
8434 | } | |
8435 | } | |
8436 | else | |
8437 | { | |
8438 | /* Unknown result. Continue checking. */ | |
8439 | ret = 2; | |
8440 | } | |
8441 | } | |
9b5ecbd0 AM |
8442 | } |
8443 | ||
4c52953f AM |
8444 | if (local_syms != NULL |
8445 | && (elf_tdata (isec->owner)->symtab_hdr.contents | |
8446 | != (unsigned char *) local_syms)) | |
8447 | free (local_syms); | |
8448 | if (elf_section_data (isec)->relocs != relstart) | |
8449 | free (relstart); | |
8450 | ||
9b5ecbd0 AM |
8451 | return ret; |
8452 | } | |
8453 | ||
721956f4 AM |
8454 | /* The linker repeatedly calls this function for each input section, |
8455 | in the order that input sections are linked into output sections. | |
8456 | Build lists of input sections to determine groupings between which | |
8457 | we may insert linker stubs. */ | |
8458 | ||
9b5ecbd0 | 8459 | bfd_boolean |
4ce794b7 | 8460 | ppc64_elf_next_input_section (struct bfd_link_info *info, asection *isec) |
721956f4 AM |
8461 | { |
8462 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
8463 | ||
734b6cf9 AM |
8464 | if ((isec->output_section->flags & SEC_CODE) != 0 |
8465 | && isec->output_section->index <= htab->top_index) | |
721956f4 | 8466 | { |
734b6cf9 | 8467 | asection **list = htab->input_list + isec->output_section->index; |
3d6f9012 | 8468 | /* Steal the link_sec pointer for our list. */ |
721956f4 | 8469 | #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec) |
3d6f9012 AM |
8470 | /* This happens to make the list in reverse order, |
8471 | which is what we want. */ | |
734b6cf9 AM |
8472 | PREV_SEC (isec) = *list; |
8473 | *list = isec; | |
721956f4 | 8474 | } |
ad8e1ba5 | 8475 | |
4c52953f | 8476 | if (htab->multi_toc_needed) |
9b5ecbd0 | 8477 | { |
4c52953f AM |
8478 | /* If a code section has a function that uses the TOC then we need |
8479 | to use the right TOC (obviously). Also, make sure that .opd gets | |
8480 | the correct TOC value for R_PPC64_TOC relocs that don't have or | |
8481 | can't find their function symbol (shouldn't ever happen now). */ | |
8482 | if (isec->has_toc_reloc || (isec->flags & SEC_CODE) == 0) | |
8483 | { | |
8484 | if (elf_gp (isec->owner) != 0) | |
8485 | htab->toc_curr = elf_gp (isec->owner); | |
8486 | } | |
8487 | else if (htab->stub_group[isec->id].toc_off == 0) | |
8488 | { | |
8489 | int ret = toc_adjusting_stub_needed (info, isec); | |
8490 | if (ret < 0) | |
8491 | return FALSE; | |
8492 | else | |
8493 | isec->makes_toc_func_call = ret & 1; | |
8494 | } | |
9b5ecbd0 | 8495 | } |
ad8e1ba5 AM |
8496 | |
8497 | /* Functions that don't use the TOC can belong in any TOC group. | |
8498 | Use the last TOC base. This happens to make _init and _fini | |
8499 | pasting work. */ | |
8500 | htab->stub_group[isec->id].toc_off = htab->toc_curr; | |
9b5ecbd0 | 8501 | return TRUE; |
721956f4 AM |
8502 | } |
8503 | ||
8504 | /* See whether we can group stub sections together. Grouping stub | |
8505 | sections may result in fewer stubs. More importantly, we need to | |
8506 | put all .init* and .fini* stubs at the beginning of the .init or | |
8507 | .fini output sections respectively, because glibc splits the | |
8508 | _init and _fini functions into multiple parts. Putting a stub in | |
8509 | the middle of a function is not a good idea. */ | |
8510 | ||
8511 | static void | |
4ce794b7 AM |
8512 | group_sections (struct ppc_link_hash_table *htab, |
8513 | bfd_size_type stub_group_size, | |
8514 | bfd_boolean stubs_always_before_branch) | |
721956f4 | 8515 | { |
734b6cf9 AM |
8516 | asection **list = htab->input_list + htab->top_index; |
8517 | do | |
721956f4 | 8518 | { |
734b6cf9 AM |
8519 | asection *tail = *list; |
8520 | while (tail != NULL) | |
721956f4 | 8521 | { |
734b6cf9 AM |
8522 | asection *curr; |
8523 | asection *prev; | |
8524 | bfd_size_type total; | |
8525 | bfd_boolean big_sec; | |
8526 | bfd_vma curr_toc; | |
8527 | ||
8528 | curr = tail; | |
eea6121a | 8529 | total = tail->size; |
734b6cf9 AM |
8530 | big_sec = total >= stub_group_size; |
8531 | curr_toc = htab->stub_group[tail->id].toc_off; | |
8532 | ||
8533 | while ((prev = PREV_SEC (curr)) != NULL | |
8534 | && ((total += curr->output_offset - prev->output_offset) | |
ad8e1ba5 AM |
8535 | < stub_group_size) |
8536 | && htab->stub_group[prev->id].toc_off == curr_toc) | |
734b6cf9 AM |
8537 | curr = prev; |
8538 | ||
8539 | /* OK, the size from the start of CURR to the end is less | |
8540 | than stub_group_size and thus can be handled by one stub | |
8541 | section. (or the tail section is itself larger than | |
8542 | stub_group_size, in which case we may be toast.) We | |
8543 | should really be keeping track of the total size of stubs | |
8544 | added here, as stubs contribute to the final output | |
8545 | section size. That's a little tricky, and this way will | |
8546 | only break if stubs added make the total size more than | |
8547 | 2^25, ie. for the default stub_group_size, if stubs total | |
8548 | more than 2097152 bytes, or nearly 75000 plt call stubs. */ | |
8549 | do | |
721956f4 AM |
8550 | { |
8551 | prev = PREV_SEC (tail); | |
734b6cf9 | 8552 | /* Set up this stub group. */ |
721956f4 AM |
8553 | htab->stub_group[tail->id].link_sec = curr; |
8554 | } | |
734b6cf9 AM |
8555 | while (tail != curr && (tail = prev) != NULL); |
8556 | ||
8557 | /* But wait, there's more! Input sections up to stub_group_size | |
8558 | bytes before the stub section can be handled by it too. | |
8559 | Don't do this if we have a really large section after the | |
8560 | stubs, as adding more stubs increases the chance that | |
8561 | branches may not reach into the stub section. */ | |
8562 | if (!stubs_always_before_branch && !big_sec) | |
8563 | { | |
8564 | total = 0; | |
8565 | while (prev != NULL | |
8566 | && ((total += tail->output_offset - prev->output_offset) | |
8567 | < stub_group_size) | |
8568 | && htab->stub_group[prev->id].toc_off == curr_toc) | |
8569 | { | |
8570 | tail = prev; | |
8571 | prev = PREV_SEC (tail); | |
8572 | htab->stub_group[tail->id].link_sec = curr; | |
8573 | } | |
8574 | } | |
8575 | tail = prev; | |
721956f4 AM |
8576 | } |
8577 | } | |
734b6cf9 AM |
8578 | while (list-- != htab->input_list); |
8579 | free (htab->input_list); | |
721956f4 AM |
8580 | #undef PREV_SEC |
8581 | } | |
8582 | ||
721956f4 AM |
8583 | /* Determine and set the size of the stub section for a final link. |
8584 | ||
8585 | The basic idea here is to examine all the relocations looking for | |
8586 | PC-relative calls to a target that is unreachable with a "bl" | |
8587 | instruction. */ | |
8588 | ||
b34976b6 | 8589 | bfd_boolean |
4ce794b7 | 8590 | ppc64_elf_size_stubs (bfd *output_bfd, |
4ce794b7 AM |
8591 | struct bfd_link_info *info, |
8592 | bfd_signed_vma group_size, | |
8593 | asection *(*add_stub_section) (const char *, asection *), | |
8594 | void (*layout_sections_again) (void)) | |
721956f4 AM |
8595 | { |
8596 | bfd_size_type stub_group_size; | |
b34976b6 | 8597 | bfd_boolean stubs_always_before_branch; |
721956f4 AM |
8598 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
8599 | ||
8600 | /* Stash our params away. */ | |
721956f4 AM |
8601 | htab->add_stub_section = add_stub_section; |
8602 | htab->layout_sections_again = layout_sections_again; | |
8603 | stubs_always_before_branch = group_size < 0; | |
8604 | if (group_size < 0) | |
8605 | stub_group_size = -group_size; | |
8606 | else | |
8607 | stub_group_size = group_size; | |
8608 | if (stub_group_size == 1) | |
8609 | { | |
8610 | /* Default values. */ | |
58ac9f71 AM |
8611 | if (stubs_always_before_branch) |
8612 | { | |
8613 | stub_group_size = 0x1e00000; | |
8614 | if (htab->has_14bit_branch) | |
8615 | stub_group_size = 0x7800; | |
8616 | } | |
8617 | else | |
8618 | { | |
8619 | stub_group_size = 0x1c00000; | |
8620 | if (htab->has_14bit_branch) | |
8621 | stub_group_size = 0x7000; | |
8622 | } | |
721956f4 AM |
8623 | } |
8624 | ||
8625 | group_sections (htab, stub_group_size, stubs_always_before_branch); | |
8626 | ||
721956f4 AM |
8627 | while (1) |
8628 | { | |
8629 | bfd *input_bfd; | |
8630 | unsigned int bfd_indx; | |
8631 | asection *stub_sec; | |
b34976b6 | 8632 | bfd_boolean stub_changed; |
721956f4 AM |
8633 | |
8634 | htab->stub_iteration += 1; | |
b34976b6 | 8635 | stub_changed = FALSE; |
721956f4 AM |
8636 | |
8637 | for (input_bfd = info->input_bfds, bfd_indx = 0; | |
8638 | input_bfd != NULL; | |
8639 | input_bfd = input_bfd->link_next, bfd_indx++) | |
8640 | { | |
8641 | Elf_Internal_Shdr *symtab_hdr; | |
8642 | asection *section; | |
6cdc0ccc | 8643 | Elf_Internal_Sym *local_syms = NULL; |
721956f4 AM |
8644 | |
8645 | /* We'll need the symbol table in a second. */ | |
8646 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
8647 | if (symtab_hdr->sh_info == 0) | |
8648 | continue; | |
8649 | ||
721956f4 AM |
8650 | /* Walk over each section attached to the input bfd. */ |
8651 | for (section = input_bfd->sections; | |
8652 | section != NULL; | |
8653 | section = section->next) | |
8654 | { | |
721956f4 | 8655 | Elf_Internal_Rela *internal_relocs, *irelaend, *irela; |
721956f4 AM |
8656 | |
8657 | /* If there aren't any relocs, then there's nothing more | |
8658 | to do. */ | |
8659 | if ((section->flags & SEC_RELOC) == 0 | |
8660 | || section->reloc_count == 0) | |
8661 | continue; | |
8662 | ||
8663 | /* If this section is a link-once section that will be | |
8664 | discarded, then don't create any stubs. */ | |
8665 | if (section->output_section == NULL | |
8666 | || section->output_section->owner != output_bfd) | |
8667 | continue; | |
8668 | ||
1e2f5b6e AM |
8669 | /* Get the relocs. */ |
8670 | internal_relocs | |
4ce794b7 | 8671 | = _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL, |
45d6a902 | 8672 | info->keep_memory); |
721956f4 | 8673 | if (internal_relocs == NULL) |
1e2f5b6e | 8674 | goto error_ret_free_local; |
721956f4 AM |
8675 | |
8676 | /* Now examine each relocation. */ | |
8677 | irela = internal_relocs; | |
8678 | irelaend = irela + section->reloc_count; | |
8679 | for (; irela < irelaend; irela++) | |
8680 | { | |
4ce794b7 AM |
8681 | enum elf_ppc64_reloc_type r_type; |
8682 | unsigned int r_indx; | |
721956f4 AM |
8683 | enum ppc_stub_type stub_type; |
8684 | struct ppc_stub_hash_entry *stub_entry; | |
8387904d | 8685 | asection *sym_sec, *code_sec; |
721956f4 AM |
8686 | bfd_vma sym_value; |
8687 | bfd_vma destination; | |
8843416a | 8688 | bfd_boolean ok_dest; |
721956f4 | 8689 | struct ppc_link_hash_entry *hash; |
8387904d | 8690 | struct ppc_link_hash_entry *fdh; |
411e1bfb AM |
8691 | struct elf_link_hash_entry *h; |
8692 | Elf_Internal_Sym *sym; | |
721956f4 AM |
8693 | char *stub_name; |
8694 | const asection *id_sec; | |
8387904d | 8695 | long *opd_adjust; |
721956f4 AM |
8696 | |
8697 | r_type = ELF64_R_TYPE (irela->r_info); | |
8698 | r_indx = ELF64_R_SYM (irela->r_info); | |
8699 | ||
4ce794b7 | 8700 | if (r_type >= R_PPC64_max) |
721956f4 AM |
8701 | { |
8702 | bfd_set_error (bfd_error_bad_value); | |
6cdc0ccc | 8703 | goto error_ret_free_internal; |
721956f4 AM |
8704 | } |
8705 | ||
8706 | /* Only look for stubs on branch instructions. */ | |
4ce794b7 AM |
8707 | if (r_type != R_PPC64_REL24 |
8708 | && r_type != R_PPC64_REL14 | |
8709 | && r_type != R_PPC64_REL14_BRTAKEN | |
8710 | && r_type != R_PPC64_REL14_BRNTAKEN) | |
721956f4 AM |
8711 | continue; |
8712 | ||
8713 | /* Now determine the call target, its name, value, | |
8714 | section. */ | |
411e1bfb AM |
8715 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, |
8716 | r_indx, input_bfd)) | |
8717 | goto error_ret_free_internal; | |
8718 | hash = (struct ppc_link_hash_entry *) h; | |
8719 | ||
8843416a | 8720 | ok_dest = FALSE; |
8387904d | 8721 | fdh = NULL; |
411e1bfb | 8722 | if (hash == NULL) |
721956f4 | 8723 | { |
411e1bfb | 8724 | sym_value = sym->st_value; |
8843416a | 8725 | ok_dest = TRUE; |
721956f4 AM |
8726 | } |
8727 | else | |
8728 | { | |
411e1bfb | 8729 | sym_value = 0; |
99877b66 AM |
8730 | /* Recognise an old ABI func code entry sym, and |
8731 | use the func descriptor sym instead. */ | |
8732 | if (hash->elf.root.type == bfd_link_hash_undefweak | |
8387904d AM |
8733 | && hash->elf.root.root.string[0] == '.' |
8734 | && (fdh = get_fdh (hash, htab)) != NULL) | |
8735 | { | |
8387904d AM |
8736 | if (fdh->elf.root.type == bfd_link_hash_defined |
8737 | || fdh->elf.root.type == bfd_link_hash_defweak) | |
8738 | { | |
8739 | sym_sec = fdh->elf.root.u.def.section; | |
8740 | sym_value = fdh->elf.root.u.def.value; | |
8741 | if (sym_sec->output_section != NULL) | |
8742 | ok_dest = TRUE; | |
8743 | } | |
99877b66 AM |
8744 | else |
8745 | fdh = NULL; | |
8387904d AM |
8746 | } |
8747 | else if (hash->elf.root.type == bfd_link_hash_defined | |
8748 | || hash->elf.root.type == bfd_link_hash_defweak) | |
721956f4 | 8749 | { |
721956f4 AM |
8750 | sym_value = hash->elf.root.u.def.value; |
8751 | if (sym_sec->output_section != NULL) | |
8843416a | 8752 | ok_dest = TRUE; |
721956f4 AM |
8753 | } |
8754 | else if (hash->elf.root.type == bfd_link_hash_undefweak) | |
8755 | ; | |
8756 | else if (hash->elf.root.type == bfd_link_hash_undefined) | |
8757 | ; | |
8758 | else | |
8759 | { | |
8760 | bfd_set_error (bfd_error_bad_value); | |
8761 | goto error_ret_free_internal; | |
8762 | } | |
8763 | } | |
8764 | ||
8843416a AM |
8765 | destination = 0; |
8766 | if (ok_dest) | |
8767 | { | |
8768 | sym_value += irela->r_addend; | |
8769 | destination = (sym_value | |
8770 | + sym_sec->output_offset | |
8771 | + sym_sec->output_section->vma); | |
8772 | } | |
8773 | ||
8387904d AM |
8774 | code_sec = sym_sec; |
8775 | opd_adjust = get_opd_info (sym_sec); | |
8776 | if (opd_adjust != NULL) | |
8777 | { | |
8778 | bfd_vma dest; | |
8779 | ||
8780 | if (hash == NULL) | |
8781 | { | |
3f764659 | 8782 | long adjust = opd_adjust[sym_value / 8]; |
8387904d AM |
8783 | if (adjust == -1) |
8784 | continue; | |
8785 | sym_value += adjust; | |
8786 | } | |
8787 | dest = opd_entry_value (sym_sec, sym_value, | |
8788 | &code_sec, &sym_value); | |
8789 | if (dest != (bfd_vma) -1) | |
8790 | { | |
8791 | destination = dest; | |
8792 | if (fdh != NULL) | |
8793 | { | |
8794 | /* Fixup old ABI sym to point at code | |
8795 | entry. */ | |
99877b66 | 8796 | hash->elf.root.type = bfd_link_hash_defweak; |
8387904d AM |
8797 | hash->elf.root.u.def.section = code_sec; |
8798 | hash->elf.root.u.def.value = sym_value; | |
8799 | } | |
8800 | } | |
8801 | } | |
8802 | ||
721956f4 AM |
8803 | /* Determine what (if any) linker stub is needed. */ |
8804 | stub_type = ppc_type_of_stub (section, irela, &hash, | |
8805 | destination); | |
ad8e1ba5 AM |
8806 | |
8807 | if (stub_type != ppc_stub_plt_call) | |
8808 | { | |
8809 | /* Check whether we need a TOC adjusting stub. | |
8810 | Since the linker pastes together pieces from | |
8811 | different object files when creating the | |
8812 | _init and _fini functions, it may be that a | |
8813 | call to what looks like a local sym is in | |
8814 | fact a call needing a TOC adjustment. */ | |
8387904d AM |
8815 | if (code_sec != NULL |
8816 | && code_sec->output_section != NULL | |
8817 | && (htab->stub_group[code_sec->id].toc_off | |
9b5ecbd0 | 8818 | != htab->stub_group[section->id].toc_off) |
4c52953f AM |
8819 | && (code_sec->has_toc_reloc |
8820 | || code_sec->makes_toc_func_call)) | |
ad8e1ba5 AM |
8821 | stub_type = ppc_stub_long_branch_r2off; |
8822 | } | |
8823 | ||
721956f4 AM |
8824 | if (stub_type == ppc_stub_none) |
8825 | continue; | |
8826 | ||
411e1bfb AM |
8827 | /* __tls_get_addr calls might be eliminated. */ |
8828 | if (stub_type != ppc_stub_plt_call | |
8829 | && hash != NULL | |
8387904d AM |
8830 | && (hash == htab->tls_get_addr |
8831 | || hash == htab->tls_get_addr_fd) | |
411e1bfb AM |
8832 | && section->has_tls_reloc |
8833 | && irela != internal_relocs) | |
8834 | { | |
8835 | /* Get tls info. */ | |
e7b938ca | 8836 | char *tls_mask; |
411e1bfb | 8837 | |
0d4792f7 | 8838 | if (!get_tls_mask (&tls_mask, NULL, &local_syms, |
411e1bfb AM |
8839 | irela - 1, input_bfd)) |
8840 | goto error_ret_free_internal; | |
e7b938ca | 8841 | if (*tls_mask != 0) |
411e1bfb AM |
8842 | continue; |
8843 | } | |
8844 | ||
721956f4 AM |
8845 | /* Support for grouping stub sections. */ |
8846 | id_sec = htab->stub_group[section->id].link_sec; | |
8847 | ||
8848 | /* Get the name of this stub. */ | |
8849 | stub_name = ppc_stub_name (id_sec, sym_sec, hash, irela); | |
8850 | if (!stub_name) | |
8851 | goto error_ret_free_internal; | |
8852 | ||
8853 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, | |
b34976b6 | 8854 | stub_name, FALSE, FALSE); |
721956f4 AM |
8855 | if (stub_entry != NULL) |
8856 | { | |
8857 | /* The proper stub has already been created. */ | |
8858 | free (stub_name); | |
8859 | continue; | |
8860 | } | |
8861 | ||
8862 | stub_entry = ppc_add_stub (stub_name, section, htab); | |
8863 | if (stub_entry == NULL) | |
8864 | { | |
8865 | free (stub_name); | |
6cdc0ccc AM |
8866 | error_ret_free_internal: |
8867 | if (elf_section_data (section)->relocs == NULL) | |
8868 | free (internal_relocs); | |
8869 | error_ret_free_local: | |
8870 | if (local_syms != NULL | |
8871 | && (symtab_hdr->contents | |
8872 | != (unsigned char *) local_syms)) | |
8873 | free (local_syms); | |
b34976b6 | 8874 | return FALSE; |
721956f4 AM |
8875 | } |
8876 | ||
ad8e1ba5 | 8877 | stub_entry->stub_type = stub_type; |
721956f4 | 8878 | stub_entry->target_value = sym_value; |
8387904d | 8879 | stub_entry->target_section = code_sec; |
721956f4 | 8880 | stub_entry->h = hash; |
411e1bfb | 8881 | stub_entry->addend = irela->r_addend; |
ee75fd95 AM |
8882 | |
8883 | if (stub_entry->h != NULL) | |
8884 | htab->stub_globals += 1; | |
8885 | ||
b34976b6 | 8886 | stub_changed = TRUE; |
721956f4 AM |
8887 | } |
8888 | ||
8889 | /* We're done with the internal relocs, free them. */ | |
6cdc0ccc | 8890 | if (elf_section_data (section)->relocs != internal_relocs) |
1e2f5b6e | 8891 | free (internal_relocs); |
721956f4 | 8892 | } |
6cdc0ccc AM |
8893 | |
8894 | if (local_syms != NULL | |
8895 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
8896 | { | |
8897 | if (!info->keep_memory) | |
8898 | free (local_syms); | |
8899 | else | |
8900 | symtab_hdr->contents = (unsigned char *) local_syms; | |
8901 | } | |
721956f4 AM |
8902 | } |
8903 | ||
8904 | if (!stub_changed) | |
8905 | break; | |
8906 | ||
8907 | /* OK, we've added some stubs. Find out the new size of the | |
8908 | stub sections. */ | |
8909 | for (stub_sec = htab->stub_bfd->sections; | |
8910 | stub_sec != NULL; | |
8911 | stub_sec = stub_sec->next) | |
e717da7e | 8912 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0) |
ee75fd95 AM |
8913 | { |
8914 | stub_sec->size = 0; | |
8915 | stub_sec->reloc_count = 0; | |
8916 | } | |
eea6121a AM |
8917 | |
8918 | htab->brlt->size = 0; | |
ee75fd95 | 8919 | if (htab->relbrlt != NULL) |
eea6121a | 8920 | htab->relbrlt->size = 0; |
721956f4 | 8921 | |
63bc6f6c | 8922 | bfd_hash_traverse (&htab->stub_hash_table, ppc_size_one_stub, info); |
721956f4 AM |
8923 | |
8924 | /* Ask the linker to do its stuff. */ | |
8925 | (*htab->layout_sections_again) (); | |
8926 | } | |
8927 | ||
afbe61cf AM |
8928 | /* It would be nice to strip .branch_lt from the output if the |
8929 | section is empty, but it's too late. If we strip sections here, | |
8930 | the dynamic symbol table is corrupted since the section symbol | |
8931 | for the stripped section isn't written. */ | |
721956f4 | 8932 | |
b34976b6 | 8933 | return TRUE; |
721956f4 AM |
8934 | } |
8935 | ||
8936 | /* Called after we have determined section placement. If sections | |
805fc799 | 8937 | move, we'll be called again. Provide a value for TOCstart. */ |
721956f4 | 8938 | |
805fc799 | 8939 | bfd_vma |
4ce794b7 | 8940 | ppc64_elf_toc (bfd *obfd) |
721956f4 | 8941 | { |
805fc799 AM |
8942 | asection *s; |
8943 | bfd_vma TOCstart; | |
721956f4 | 8944 | |
805fc799 AM |
8945 | /* The TOC consists of sections .got, .toc, .tocbss, .plt in that |
8946 | order. The TOC starts where the first of these sections starts. */ | |
8947 | s = bfd_get_section_by_name (obfd, ".got"); | |
8948 | if (s == NULL) | |
8949 | s = bfd_get_section_by_name (obfd, ".toc"); | |
8950 | if (s == NULL) | |
8951 | s = bfd_get_section_by_name (obfd, ".tocbss"); | |
8952 | if (s == NULL) | |
8953 | s = bfd_get_section_by_name (obfd, ".plt"); | |
8954 | if (s == NULL) | |
8955 | { | |
8956 | /* This may happen for | |
8957 | o references to TOC base (SYM@toc / TOC[tc0]) without a | |
8958 | .toc directive | |
8959 | o bad linker script | |
8960 | o --gc-sections and empty TOC sections | |
8961 | ||
8962 | FIXME: Warn user? */ | |
8963 | ||
8964 | /* Look for a likely section. We probably won't even be | |
8965 | using TOCstart. */ | |
8966 | for (s = obfd->sections; s != NULL; s = s->next) | |
8967 | if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY)) | |
8968 | == (SEC_ALLOC | SEC_SMALL_DATA)) | |
8969 | break; | |
721956f4 | 8970 | if (s == NULL) |
805fc799 AM |
8971 | for (s = obfd->sections; s != NULL; s = s->next) |
8972 | if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA)) | |
8973 | == (SEC_ALLOC | SEC_SMALL_DATA)) | |
8974 | break; | |
721956f4 | 8975 | if (s == NULL) |
805fc799 AM |
8976 | for (s = obfd->sections; s != NULL; s = s->next) |
8977 | if ((s->flags & (SEC_ALLOC | SEC_READONLY)) == SEC_ALLOC) | |
8978 | break; | |
721956f4 | 8979 | if (s == NULL) |
805fc799 AM |
8980 | for (s = obfd->sections; s != NULL; s = s->next) |
8981 | if ((s->flags & SEC_ALLOC) == SEC_ALLOC) | |
8982 | break; | |
8983 | } | |
721956f4 | 8984 | |
805fc799 AM |
8985 | TOCstart = 0; |
8986 | if (s != NULL) | |
8987 | TOCstart = s->output_section->vma + s->output_offset; | |
721956f4 | 8988 | |
805fc799 | 8989 | return TOCstart; |
721956f4 AM |
8990 | } |
8991 | ||
8992 | /* Build all the stubs associated with the current output file. | |
8993 | The stubs are kept in a hash table attached to the main linker | |
8994 | hash table. This function is called via gldelf64ppc_finish. */ | |
8995 | ||
b34976b6 | 8996 | bfd_boolean |
4ce794b7 AM |
8997 | ppc64_elf_build_stubs (bfd_boolean emit_stub_syms, |
8998 | struct bfd_link_info *info, | |
8999 | char **stats) | |
5d1634d7 AM |
9000 | { |
9001 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
721956f4 | 9002 | asection *stub_sec; |
5d1634d7 | 9003 | bfd_byte *p; |
e717da7e | 9004 | int stub_sec_count = 0; |
5d1634d7 | 9005 | |
ad8e1ba5 | 9006 | htab->emit_stub_syms = emit_stub_syms; |
eea6121a AM |
9007 | |
9008 | /* Allocate memory to hold the linker stubs. */ | |
721956f4 AM |
9009 | for (stub_sec = htab->stub_bfd->sections; |
9010 | stub_sec != NULL; | |
9011 | stub_sec = stub_sec->next) | |
eea6121a AM |
9012 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0 |
9013 | && stub_sec->size != 0) | |
e717da7e | 9014 | { |
eea6121a AM |
9015 | stub_sec->contents = bfd_zalloc (htab->stub_bfd, stub_sec->size); |
9016 | if (stub_sec->contents == NULL) | |
9017 | return FALSE; | |
9018 | /* We want to check that built size is the same as calculated | |
9019 | size. rawsize is a convenient location to use. */ | |
9020 | stub_sec->rawsize = stub_sec->size; | |
9021 | stub_sec->size = 0; | |
e717da7e | 9022 | } |
5d1634d7 | 9023 | |
4ce794b7 | 9024 | if (htab->plt != NULL) |
5d1634d7 | 9025 | { |
9f951329 | 9026 | unsigned int indx; |
ad8e1ba5 | 9027 | bfd_vma plt0; |
9f951329 | 9028 | |
721956f4 | 9029 | /* Build the .glink plt call stub. */ |
4ce794b7 AM |
9030 | plt0 = (htab->plt->output_section->vma |
9031 | + htab->plt->output_offset | |
9032 | - (htab->glink->output_section->vma | |
9033 | + htab->glink->output_offset | |
ad8e1ba5 AM |
9034 | + GLINK_CALL_STUB_SIZE)); |
9035 | if (plt0 + 0x80008000 > 0xffffffff) | |
721956f4 | 9036 | { |
ad8e1ba5 AM |
9037 | (*_bfd_error_handler) (_(".glink and .plt too far apart")); |
9038 | bfd_set_error (bfd_error_bad_value); | |
9039 | return FALSE; | |
721956f4 | 9040 | } |
721956f4 | 9041 | |
97b639ba AM |
9042 | if (htab->emit_stub_syms) |
9043 | { | |
9044 | struct elf_link_hash_entry *h; | |
9045 | h = elf_link_hash_lookup (&htab->elf, "__glink", TRUE, FALSE, FALSE); | |
9046 | if (h == NULL) | |
9047 | return FALSE; | |
9048 | if (h->root.type == bfd_link_hash_new) | |
9049 | { | |
9050 | h->root.type = bfd_link_hash_defined; | |
9051 | h->root.u.def.section = htab->glink; | |
9052 | h->root.u.def.value = 0; | |
f5385ebf AM |
9053 | h->ref_regular = 1; |
9054 | h->def_regular = 1; | |
9055 | h->ref_regular_nonweak = 1; | |
9056 | h->forced_local = 1; | |
9057 | h->non_elf = 0; | |
97b639ba AM |
9058 | } |
9059 | } | |
4ce794b7 AM |
9060 | p = htab->glink->contents; |
9061 | bfd_put_32 (htab->glink->owner, MFCTR_R12, p); | |
ad8e1ba5 | 9062 | p += 4; |
4ce794b7 | 9063 | bfd_put_32 (htab->glink->owner, SLDI_R11_R0_3, p); |
ad8e1ba5 | 9064 | p += 4; |
4ce794b7 | 9065 | bfd_put_32 (htab->glink->owner, ADDIC_R2_R0_32K, p); |
ad8e1ba5 | 9066 | p += 4; |
4ce794b7 | 9067 | bfd_put_32 (htab->glink->owner, SUB_R12_R12_R11, p); |
ad8e1ba5 | 9068 | p += 4; |
4ce794b7 | 9069 | bfd_put_32 (htab->glink->owner, SRADI_R2_R2_63, p); |
ad8e1ba5 | 9070 | p += 4; |
4ce794b7 | 9071 | bfd_put_32 (htab->glink->owner, SLDI_R11_R0_2, p); |
ad8e1ba5 | 9072 | p += 4; |
4ce794b7 | 9073 | bfd_put_32 (htab->glink->owner, AND_R2_R2_R11, p); |
ad8e1ba5 | 9074 | p += 4; |
4ce794b7 | 9075 | bfd_put_32 (htab->glink->owner, SUB_R12_R12_R11, p); |
ad8e1ba5 | 9076 | p += 4; |
4ce794b7 | 9077 | bfd_put_32 (htab->glink->owner, ADD_R12_R12_R2, p); |
ad8e1ba5 | 9078 | p += 4; |
4ce794b7 | 9079 | bfd_put_32 (htab->glink->owner, ADDIS_R12_R12 | PPC_HA (plt0), p); |
ad8e1ba5 | 9080 | p += 4; |
4ce794b7 | 9081 | bfd_put_32 (htab->glink->owner, LD_R11_0R12 | PPC_LO (plt0), p); |
ad8e1ba5 | 9082 | p += 4; |
4ce794b7 | 9083 | bfd_put_32 (htab->glink->owner, ADDI_R12_R12 | PPC_LO (plt0), p); |
ad8e1ba5 | 9084 | p += 4; |
4ce794b7 | 9085 | bfd_put_32 (htab->glink->owner, LD_R2_0R12 | 8, p); |
ad8e1ba5 | 9086 | p += 4; |
4ce794b7 | 9087 | bfd_put_32 (htab->glink->owner, MTCTR_R11, p); |
ad8e1ba5 | 9088 | p += 4; |
4ce794b7 | 9089 | bfd_put_32 (htab->glink->owner, LD_R11_0R12 | 16, p); |
ad8e1ba5 | 9090 | p += 4; |
4ce794b7 | 9091 | bfd_put_32 (htab->glink->owner, BCTR, p); |
ad8e1ba5 AM |
9092 | p += 4; |
9093 | ||
9f951329 AM |
9094 | /* Build the .glink lazy link call stubs. */ |
9095 | indx = 0; | |
eea6121a | 9096 | while (p < htab->glink->contents + htab->glink->size) |
9f951329 AM |
9097 | { |
9098 | if (indx < 0x8000) | |
9099 | { | |
4ce794b7 | 9100 | bfd_put_32 (htab->glink->owner, LI_R0_0 | indx, p); |
9f951329 AM |
9101 | p += 4; |
9102 | } | |
9103 | else | |
9104 | { | |
4ce794b7 | 9105 | bfd_put_32 (htab->glink->owner, LIS_R0_0 | PPC_HI (indx), p); |
9f951329 | 9106 | p += 4; |
4ce794b7 | 9107 | bfd_put_32 (htab->glink->owner, ORI_R0_R0_0 | PPC_LO (indx), p); |
9f951329 AM |
9108 | p += 4; |
9109 | } | |
4ce794b7 AM |
9110 | bfd_put_32 (htab->glink->owner, |
9111 | B_DOT | ((htab->glink->contents - p) & 0x3fffffc), p); | |
a16d5acb | 9112 | indx++; |
9f951329 AM |
9113 | p += 4; |
9114 | } | |
eea6121a | 9115 | htab->glink->rawsize = p - htab->glink->contents; |
5d1634d7 | 9116 | } |
5d1634d7 | 9117 | |
eea6121a | 9118 | if (htab->brlt->size != 0) |
721956f4 | 9119 | { |
4ce794b7 | 9120 | htab->brlt->contents = bfd_zalloc (htab->brlt->owner, |
eea6121a | 9121 | htab->brlt->size); |
4ce794b7 | 9122 | if (htab->brlt->contents == NULL) |
b34976b6 | 9123 | return FALSE; |
721956f4 | 9124 | } |
ee75fd95 | 9125 | if (htab->relbrlt != NULL && htab->relbrlt->size != 0) |
63bc6f6c AM |
9126 | { |
9127 | htab->relbrlt->contents = bfd_zalloc (htab->relbrlt->owner, | |
eea6121a | 9128 | htab->relbrlt->size); |
63bc6f6c AM |
9129 | if (htab->relbrlt->contents == NULL) |
9130 | return FALSE; | |
9131 | } | |
5d1634d7 | 9132 | |
721956f4 AM |
9133 | /* Build the stubs as directed by the stub hash table. */ |
9134 | bfd_hash_traverse (&htab->stub_hash_table, ppc_build_one_stub, info); | |
5d1634d7 | 9135 | |
721956f4 AM |
9136 | for (stub_sec = htab->stub_bfd->sections; |
9137 | stub_sec != NULL; | |
9138 | stub_sec = stub_sec->next) | |
e717da7e AM |
9139 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0) |
9140 | { | |
9141 | stub_sec_count += 1; | |
eea6121a | 9142 | if (stub_sec->rawsize != stub_sec->size) |
e717da7e AM |
9143 | break; |
9144 | } | |
5d1634d7 | 9145 | |
721956f4 | 9146 | if (stub_sec != NULL |
eea6121a | 9147 | || htab->glink->rawsize != htab->glink->size) |
5d1634d7 | 9148 | { |
b34976b6 | 9149 | htab->stub_error = TRUE; |
721956f4 | 9150 | (*_bfd_error_handler) (_("stubs don't match calculated size")); |
5d1634d7 | 9151 | } |
721956f4 | 9152 | |
d2a300cf AM |
9153 | if (htab->stub_error) |
9154 | return FALSE; | |
9155 | ||
9156 | if (stats != NULL) | |
9157 | { | |
9158 | *stats = bfd_malloc (500); | |
9159 | if (*stats == NULL) | |
9160 | return FALSE; | |
9161 | ||
ee75fd95 | 9162 | sprintf (*stats, _("linker stubs in %u group%s\n" |
d2a300cf AM |
9163 | " branch %lu\n" |
9164 | " toc adjust %lu\n" | |
9165 | " long branch %lu\n" | |
9166 | " long toc adj %lu\n" | |
9167 | " plt call %lu"), | |
e717da7e | 9168 | stub_sec_count, |
ee75fd95 | 9169 | stub_sec_count == 1 ? "" : "s", |
4ce794b7 AM |
9170 | htab->stub_count[ppc_stub_long_branch - 1], |
9171 | htab->stub_count[ppc_stub_long_branch_r2off - 1], | |
9172 | htab->stub_count[ppc_stub_plt_branch - 1], | |
9173 | htab->stub_count[ppc_stub_plt_branch_r2off - 1], | |
9174 | htab->stub_count[ppc_stub_plt_call - 1]); | |
d2a300cf AM |
9175 | } |
9176 | return TRUE; | |
5bd4f169 AM |
9177 | } |
9178 | ||
99877b66 AM |
9179 | /* This function undoes the changes made by add_symbol_adjust. */ |
9180 | ||
9181 | static bfd_boolean | |
9182 | undo_symbol_twiddle (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED) | |
9183 | { | |
9184 | struct ppc_link_hash_entry *eh; | |
9185 | ||
9186 | if (h->root.type == bfd_link_hash_indirect) | |
9187 | return TRUE; | |
9188 | ||
9189 | if (h->root.type == bfd_link_hash_warning) | |
9190 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
9191 | ||
9192 | eh = (struct ppc_link_hash_entry *) h; | |
9193 | if (eh->elf.root.type != bfd_link_hash_undefweak || !eh->was_undefined) | |
9194 | return TRUE; | |
9195 | ||
9196 | eh->elf.root.type = bfd_link_hash_undefined; | |
9197 | return TRUE; | |
9198 | } | |
9199 | ||
9200 | void | |
9201 | ppc64_elf_restore_symbols (struct bfd_link_info *info) | |
9202 | { | |
9203 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
9204 | elf_link_hash_traverse (&htab->elf, undo_symbol_twiddle, info); | |
9205 | } | |
9206 | ||
5bd4f169 AM |
9207 | /* The RELOCATE_SECTION function is called by the ELF backend linker |
9208 | to handle the relocations for a section. | |
9209 | ||
9210 | The relocs are always passed as Rela structures; if the section | |
9211 | actually uses Rel structures, the r_addend field will always be | |
9212 | zero. | |
9213 | ||
9214 | This function is responsible for adjust the section contents as | |
9215 | necessary, and (if using Rela relocs and generating a | |
1049f94e | 9216 | relocatable output file) adjusting the reloc addend as |
5bd4f169 AM |
9217 | necessary. |
9218 | ||
9219 | This function does not have to worry about setting the reloc | |
9220 | address or the reloc symbol index. | |
9221 | ||
9222 | LOCAL_SYMS is a pointer to the swapped in local symbols. | |
9223 | ||
9224 | LOCAL_SECTIONS is an array giving the section in the input file | |
9225 | corresponding to the st_shndx field of each local symbol. | |
9226 | ||
9227 | The global hash table entry for the global symbols can be found | |
9228 | via elf_sym_hashes (input_bfd). | |
9229 | ||
1049f94e | 9230 | When generating relocatable output, this function must handle |
5bd4f169 AM |
9231 | STB_LOCAL/STT_SECTION symbols specially. The output symbol is |
9232 | going to be the section symbol corresponding to the output | |
9233 | section, which means that the addend must be adjusted | |
9234 | accordingly. */ | |
9235 | ||
b34976b6 | 9236 | static bfd_boolean |
4ce794b7 AM |
9237 | ppc64_elf_relocate_section (bfd *output_bfd, |
9238 | struct bfd_link_info *info, | |
9239 | bfd *input_bfd, | |
9240 | asection *input_section, | |
9241 | bfd_byte *contents, | |
9242 | Elf_Internal_Rela *relocs, | |
9243 | Elf_Internal_Sym *local_syms, | |
9244 | asection **local_sections) | |
5bd4f169 | 9245 | { |
65f38f15 | 9246 | struct ppc_link_hash_table *htab; |
5bd4f169 AM |
9247 | Elf_Internal_Shdr *symtab_hdr; |
9248 | struct elf_link_hash_entry **sym_hashes; | |
5bd4f169 AM |
9249 | Elf_Internal_Rela *rel; |
9250 | Elf_Internal_Rela *relend; | |
411e1bfb AM |
9251 | Elf_Internal_Rela outrel; |
9252 | bfd_byte *loc; | |
411e1bfb | 9253 | struct got_entry **local_got_ents; |
5bd4f169 | 9254 | bfd_vma TOCstart; |
b34976b6 AM |
9255 | bfd_boolean ret = TRUE; |
9256 | bfd_boolean is_opd; | |
96e0dda4 | 9257 | /* Disabled until we sort out how ld should choose 'y' vs 'at'. */ |
b34976b6 | 9258 | bfd_boolean is_power4 = FALSE; |
5bd4f169 | 9259 | |
1049f94e | 9260 | if (info->relocatable) |
b34976b6 | 9261 | return TRUE; |
b491616a | 9262 | |
65f38f15 | 9263 | /* Initialize howto table if needed. */ |
5bd4f169 | 9264 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) |
5bd4f169 AM |
9265 | ppc_howto_init (); |
9266 | ||
65f38f15 | 9267 | htab = ppc_hash_table (info); |
ee75fd95 AM |
9268 | |
9269 | /* Don't relocate stub sections. */ | |
9270 | if (input_section->owner == htab->stub_bfd) | |
9271 | return TRUE; | |
9272 | ||
411e1bfb | 9273 | local_got_ents = elf_local_got_ents (input_bfd); |
5bd4f169 | 9274 | TOCstart = elf_gp (output_bfd); |
5bd4f169 AM |
9275 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; |
9276 | sym_hashes = elf_sym_hashes (input_bfd); | |
f0abc2a1 | 9277 | is_opd = ppc64_elf_section_data (input_section)->opd.adjust != NULL; |
65f38f15 | 9278 | |
5bd4f169 AM |
9279 | rel = relocs; |
9280 | relend = relocs + input_section->reloc_count; | |
9281 | for (; rel < relend; rel++) | |
9282 | { | |
04c9666a | 9283 | enum elf_ppc64_reloc_type r_type; |
5bd4f169 AM |
9284 | bfd_vma addend; |
9285 | bfd_reloc_status_type r; | |
9286 | Elf_Internal_Sym *sym; | |
9287 | asection *sec; | |
039b3fef AM |
9288 | struct elf_link_hash_entry *h_elf; |
9289 | struct ppc_link_hash_entry *h; | |
9290 | struct ppc_link_hash_entry *fdh; | |
5bd4f169 | 9291 | const char *sym_name; |
0d4792f7 | 9292 | unsigned long r_symndx, toc_symndx; |
951fd09b | 9293 | char tls_mask, tls_gd, tls_type; |
0d4792f7 | 9294 | char sym_type; |
5bd4f169 | 9295 | bfd_vma relocation; |
b34976b6 AM |
9296 | bfd_boolean unresolved_reloc; |
9297 | bfd_boolean warned; | |
50bc7936 | 9298 | unsigned long insn, mask; |
721956f4 AM |
9299 | struct ppc_stub_hash_entry *stub_entry; |
9300 | bfd_vma max_br_offset; | |
9301 | bfd_vma from; | |
5bd4f169 | 9302 | |
4ce794b7 | 9303 | r_type = ELF64_R_TYPE (rel->r_info); |
5bd4f169 | 9304 | r_symndx = ELF64_R_SYM (rel->r_info); |
ee87f2da AM |
9305 | |
9306 | /* For old style R_PPC64_TOC relocs with a zero symbol, use the | |
9307 | symbol of the previous ADDR64 reloc. The symbol gives us the | |
9308 | proper TOC base to use. */ | |
9309 | if (rel->r_info == ELF64_R_INFO (0, R_PPC64_TOC) | |
9310 | && rel != relocs | |
9311 | && ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_ADDR64 | |
9312 | && is_opd) | |
9313 | r_symndx = ELF64_R_SYM (rel[-1].r_info); | |
9314 | ||
4ce794b7 AM |
9315 | sym = NULL; |
9316 | sec = NULL; | |
039b3fef | 9317 | h_elf = NULL; |
4ce794b7 | 9318 | sym_name = NULL; |
b34976b6 AM |
9319 | unresolved_reloc = FALSE; |
9320 | warned = FALSE; | |
65f38f15 | 9321 | |
0b13192e | 9322 | if (r_symndx < symtab_hdr->sh_info) |
5bd4f169 AM |
9323 | { |
9324 | /* It's a local symbol. */ | |
4025353c AM |
9325 | long *opd_adjust; |
9326 | ||
5bd4f169 AM |
9327 | sym = local_syms + r_symndx; |
9328 | sec = local_sections[r_symndx]; | |
be8dd2ca | 9329 | sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym); |
0d4792f7 | 9330 | sym_type = ELF64_ST_TYPE (sym->st_info); |
8517fae7 | 9331 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); |
4025353c AM |
9332 | opd_adjust = get_opd_info (sec); |
9333 | if (opd_adjust != NULL) | |
1e2f5b6e | 9334 | { |
3f764659 | 9335 | long adjust = opd_adjust[(sym->st_value + rel->r_addend) / 8]; |
4025353c AM |
9336 | if (adjust == -1) |
9337 | relocation = 0; | |
9338 | else | |
9339 | relocation += adjust; | |
1e2f5b6e | 9340 | } |
5bd4f169 AM |
9341 | } |
9342 | else | |
9343 | { | |
b2a8e766 AM |
9344 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
9345 | r_symndx, symtab_hdr, sym_hashes, | |
039b3fef | 9346 | h_elf, sec, relocation, |
b2a8e766 | 9347 | unresolved_reloc, warned); |
039b3fef AM |
9348 | sym_name = h_elf->root.root.string; |
9349 | sym_type = h_elf->type; | |
5bd4f169 | 9350 | } |
039b3fef | 9351 | h = (struct ppc_link_hash_entry *) h_elf; |
5bd4f169 | 9352 | |
951fd09b AM |
9353 | /* TLS optimizations. Replace instruction sequences and relocs |
9354 | based on information we collected in tls_optimize. We edit | |
9355 | RELOCS so that --emit-relocs will output something sensible | |
9356 | for the final instruction stream. */ | |
9357 | tls_mask = 0; | |
9358 | tls_gd = 0; | |
0d4792f7 | 9359 | toc_symndx = 0; |
d881513a | 9360 | if (IS_PPC64_TLS_RELOC (r_type)) |
411e1bfb AM |
9361 | { |
9362 | if (h != NULL) | |
039b3fef | 9363 | tls_mask = h->tls_mask; |
411e1bfb AM |
9364 | else if (local_got_ents != NULL) |
9365 | { | |
e7b938ca AM |
9366 | char *lgot_masks; |
9367 | lgot_masks = (char *) (local_got_ents + symtab_hdr->sh_info); | |
9368 | tls_mask = lgot_masks[r_symndx]; | |
411e1bfb | 9369 | } |
0d4792f7 AM |
9370 | if (tls_mask == 0 && r_type == R_PPC64_TLS) |
9371 | { | |
9372 | /* Check for toc tls entries. */ | |
9373 | char *toc_tls; | |
9374 | ||
9375 | if (!get_tls_mask (&toc_tls, &toc_symndx, &local_syms, | |
9376 | rel, input_bfd)) | |
9377 | return FALSE; | |
9378 | ||
9379 | if (toc_tls) | |
9380 | tls_mask = *toc_tls; | |
9381 | } | |
9382 | } | |
9383 | ||
9384 | /* Check that tls relocs are used with tls syms, and non-tls | |
9385 | relocs are used with non-tls syms. */ | |
9386 | if (r_symndx != 0 | |
9387 | && r_type != R_PPC64_NONE | |
9388 | && (h == NULL | |
039b3fef AM |
9389 | || h->elf.root.type == bfd_link_hash_defined |
9390 | || h->elf.root.type == bfd_link_hash_defweak) | |
0d4792f7 AM |
9391 | && IS_PPC64_TLS_RELOC (r_type) != (sym_type == STT_TLS)) |
9392 | { | |
9393 | if (r_type == R_PPC64_TLS && tls_mask != 0) | |
9394 | /* R_PPC64_TLS is OK against a symbol in the TOC. */ | |
9395 | ; | |
9396 | else | |
9397 | (*_bfd_error_handler) | |
9398 | (sym_type == STT_TLS | |
d003868e AM |
9399 | ? _("%B(%A+0x%lx): %s used with TLS symbol %s") |
9400 | : _("%B(%A+0x%lx): %s used with non-TLS symbol %s"), | |
9401 | input_bfd, | |
9402 | input_section, | |
0d4792f7 AM |
9403 | (long) rel->r_offset, |
9404 | ppc64_elf_howto_table[r_type]->name, | |
9405 | sym_name); | |
411e1bfb AM |
9406 | } |
9407 | ||
9408 | /* Ensure reloc mapping code below stays sane. */ | |
9409 | if (R_PPC64_TOC16_LO_DS != R_PPC64_TOC16_DS + 1 | |
9410 | || R_PPC64_TOC16_LO != R_PPC64_TOC16 + 1 | |
9411 | || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TLSGD16 & 3) | |
9412 | || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TLSGD16_LO & 3) | |
9413 | || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TLSGD16_HI & 3) | |
9414 | || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TLSGD16_HA & 3) | |
9415 | || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TPREL16_DS & 3) | |
9416 | || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TPREL16_LO_DS & 3) | |
9417 | || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TPREL16_HI & 3) | |
9418 | || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TPREL16_HA & 3)) | |
9419 | abort (); | |
0d4792f7 | 9420 | |
411e1bfb AM |
9421 | switch (r_type) |
9422 | { | |
9423 | default: | |
411e1bfb AM |
9424 | break; |
9425 | ||
9426 | case R_PPC64_TOC16: | |
9427 | case R_PPC64_TOC16_LO: | |
9428 | case R_PPC64_TOC16_DS: | |
9429 | case R_PPC64_TOC16_LO_DS: | |
411e1bfb AM |
9430 | { |
9431 | /* Check for toc tls entries. */ | |
9432 | char *toc_tls; | |
951fd09b | 9433 | int retval; |
411e1bfb | 9434 | |
0d4792f7 AM |
9435 | retval = get_tls_mask (&toc_tls, &toc_symndx, &local_syms, |
9436 | rel, input_bfd); | |
951fd09b | 9437 | if (retval == 0) |
411e1bfb AM |
9438 | return FALSE; |
9439 | ||
9440 | if (toc_tls) | |
9441 | { | |
951fd09b | 9442 | tls_mask = *toc_tls; |
411e1bfb AM |
9443 | if (r_type == R_PPC64_TOC16_DS |
9444 | || r_type == R_PPC64_TOC16_LO_DS) | |
81407a69 AM |
9445 | { |
9446 | if (tls_mask != 0 | |
9447 | && (tls_mask & (TLS_DTPREL | TLS_TPREL)) == 0) | |
9448 | goto toctprel; | |
9449 | } | |
411e1bfb | 9450 | else |
951fd09b AM |
9451 | { |
9452 | /* If we found a GD reloc pair, then we might be | |
9453 | doing a GD->IE transition. */ | |
9454 | if (retval == 2) | |
9455 | { | |
9456 | tls_gd = TLS_TPRELGD; | |
9457 | if (tls_mask != 0 && (tls_mask & TLS_GD) == 0) | |
9458 | goto tls_get_addr_check; | |
9459 | } | |
9460 | else if (retval == 3) | |
9461 | { | |
9462 | if (tls_mask != 0 && (tls_mask & TLS_LD) == 0) | |
9463 | goto tls_get_addr_check; | |
9464 | } | |
9465 | } | |
411e1bfb AM |
9466 | } |
9467 | } | |
9468 | break; | |
9469 | ||
9470 | case R_PPC64_GOT_TPREL16_DS: | |
9471 | case R_PPC64_GOT_TPREL16_LO_DS: | |
951fd09b AM |
9472 | if (tls_mask != 0 |
9473 | && (tls_mask & TLS_TPREL) == 0) | |
411e1bfb | 9474 | { |
81407a69 | 9475 | toctprel: |
411e1bfb AM |
9476 | insn = bfd_get_32 (output_bfd, contents + rel->r_offset - 2); |
9477 | insn &= 31 << 21; | |
9478 | insn |= 0x3c0d0000; /* addis 0,13,0 */ | |
9479 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset - 2); | |
9480 | r_type = R_PPC64_TPREL16_HA; | |
0d4792f7 AM |
9481 | if (toc_symndx != 0) |
9482 | { | |
9483 | rel->r_info = ELF64_R_INFO (toc_symndx, r_type); | |
9484 | /* We changed the symbol. Start over in order to | |
9485 | get h, sym, sec etc. right. */ | |
9486 | rel--; | |
9487 | continue; | |
9488 | } | |
9489 | else | |
9490 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
411e1bfb AM |
9491 | } |
9492 | break; | |
9493 | ||
9494 | case R_PPC64_TLS: | |
951fd09b AM |
9495 | if (tls_mask != 0 |
9496 | && (tls_mask & TLS_TPREL) == 0) | |
411e1bfb | 9497 | { |
50bc7936 | 9498 | bfd_vma rtra; |
411e1bfb | 9499 | insn = bfd_get_32 (output_bfd, contents + rel->r_offset); |
772119ce | 9500 | if ((insn & ((0x3f << 26) | (31 << 11))) |
411e1bfb AM |
9501 | == ((31 << 26) | (13 << 11))) |
9502 | rtra = insn & ((1 << 26) - (1 << 16)); | |
772119ce | 9503 | else if ((insn & ((0x3f << 26) | (31 << 16))) |
411e1bfb AM |
9504 | == ((31 << 26) | (13 << 16))) |
9505 | rtra = (insn & (31 << 21)) | ((insn & (31 << 11)) << 5); | |
9506 | else | |
9507 | abort (); | |
9508 | if ((insn & ((1 << 11) - (1 << 1))) == 266 << 1) | |
9509 | /* add -> addi. */ | |
9510 | insn = 14 << 26; | |
9511 | else if ((insn & (31 << 1)) == 23 << 1 | |
9512 | && ((insn & (31 << 6)) < 14 << 6 | |
9513 | || ((insn & (31 << 6)) >= 16 << 6 | |
9514 | && (insn & (31 << 6)) < 24 << 6))) | |
9515 | /* load and store indexed -> dform. */ | |
9516 | insn = (32 | ((insn >> 6) & 31)) << 26; | |
9517 | else if ((insn & (31 << 1)) == 21 << 1 | |
9518 | && (insn & (0x1a << 6)) == 0) | |
9519 | /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */ | |
9520 | insn = (((58 | ((insn >> 6) & 4)) << 26) | |
9521 | | ((insn >> 6) & 1)); | |
9522 | else if ((insn & (31 << 1)) == 21 << 1 | |
9523 | && (insn & ((1 << 11) - (1 << 1))) == 341 << 1) | |
9524 | /* lwax -> lwa. */ | |
9525 | insn = (58 << 26) | 2; | |
9526 | else | |
9527 | abort (); | |
9528 | insn |= rtra; | |
9529 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset); | |
411e1bfb AM |
9530 | /* Was PPC64_TLS which sits on insn boundary, now |
9531 | PPC64_TPREL16_LO which is at insn+2. */ | |
9532 | rel->r_offset += 2; | |
0d4792f7 AM |
9533 | r_type = R_PPC64_TPREL16_LO; |
9534 | if (toc_symndx != 0) | |
9535 | { | |
9536 | rel->r_info = ELF64_R_INFO (toc_symndx, r_type); | |
9537 | /* We changed the symbol. Start over in order to | |
9538 | get h, sym, sec etc. right. */ | |
9539 | rel--; | |
9540 | continue; | |
9541 | } | |
9542 | else | |
9543 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
411e1bfb AM |
9544 | } |
9545 | break; | |
9546 | ||
411e1bfb AM |
9547 | case R_PPC64_GOT_TLSGD16_HI: |
9548 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b AM |
9549 | tls_gd = TLS_TPRELGD; |
9550 | if (tls_mask != 0 && (tls_mask & TLS_GD) == 0) | |
9551 | goto tls_gdld_hi; | |
9552 | break; | |
9553 | ||
411e1bfb AM |
9554 | case R_PPC64_GOT_TLSLD16_HI: |
9555 | case R_PPC64_GOT_TLSLD16_HA: | |
951fd09b | 9556 | if (tls_mask != 0 && (tls_mask & TLS_LD) == 0) |
411e1bfb | 9557 | { |
951fd09b AM |
9558 | tls_gdld_hi: |
9559 | if ((tls_mask & tls_gd) != 0) | |
9560 | r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3) | |
9561 | + R_PPC64_GOT_TPREL16_DS); | |
9562 | else | |
411e1bfb | 9563 | { |
951fd09b AM |
9564 | bfd_put_32 (output_bfd, NOP, contents + rel->r_offset); |
9565 | rel->r_offset -= 2; | |
9566 | r_type = R_PPC64_NONE; | |
411e1bfb | 9567 | } |
951fd09b | 9568 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); |
411e1bfb AM |
9569 | } |
9570 | break; | |
9571 | ||
951fd09b AM |
9572 | case R_PPC64_GOT_TLSGD16: |
9573 | case R_PPC64_GOT_TLSGD16_LO: | |
9574 | tls_gd = TLS_TPRELGD; | |
9575 | if (tls_mask != 0 && (tls_mask & TLS_GD) == 0) | |
9576 | goto tls_get_addr_check; | |
9577 | break; | |
411e1bfb | 9578 | |
951fd09b AM |
9579 | case R_PPC64_GOT_TLSLD16: |
9580 | case R_PPC64_GOT_TLSLD16_LO: | |
9581 | if (tls_mask != 0 && (tls_mask & TLS_LD) == 0) | |
9582 | { | |
9583 | tls_get_addr_check: | |
9584 | if (rel + 1 < relend) | |
411e1bfb | 9585 | { |
951fd09b AM |
9586 | enum elf_ppc64_reloc_type r_type2; |
9587 | unsigned long r_symndx2; | |
9588 | struct elf_link_hash_entry *h2; | |
9589 | bfd_vma insn1, insn2, insn3; | |
9590 | bfd_vma offset; | |
9591 | ||
9592 | /* The next instruction should be a call to | |
9593 | __tls_get_addr. Peek at the reloc to be sure. */ | |
4ce794b7 | 9594 | r_type2 = ELF64_R_TYPE (rel[1].r_info); |
951fd09b AM |
9595 | r_symndx2 = ELF64_R_SYM (rel[1].r_info); |
9596 | if (r_symndx2 < symtab_hdr->sh_info | |
9597 | || (r_type2 != R_PPC64_REL14 | |
9598 | && r_type2 != R_PPC64_REL14_BRTAKEN | |
9599 | && r_type2 != R_PPC64_REL14_BRNTAKEN | |
9600 | && r_type2 != R_PPC64_REL24)) | |
9601 | break; | |
9602 | ||
9603 | h2 = sym_hashes[r_symndx2 - symtab_hdr->sh_info]; | |
9604 | while (h2->root.type == bfd_link_hash_indirect | |
9605 | || h2->root.type == bfd_link_hash_warning) | |
9606 | h2 = (struct elf_link_hash_entry *) h2->root.u.i.link; | |
8387904d AM |
9607 | if (h2 == NULL || (h2 != &htab->tls_get_addr->elf |
9608 | && h2 != &htab->tls_get_addr_fd->elf)) | |
951fd09b AM |
9609 | break; |
9610 | ||
9611 | /* OK, it checks out. Replace the call. */ | |
9612 | offset = rel[1].r_offset; | |
9613 | insn1 = bfd_get_32 (output_bfd, | |
9614 | contents + rel->r_offset - 2); | |
9615 | insn3 = bfd_get_32 (output_bfd, | |
9616 | contents + offset + 4); | |
9617 | if ((tls_mask & tls_gd) != 0) | |
411e1bfb | 9618 | { |
951fd09b AM |
9619 | /* IE */ |
9620 | insn1 &= (1 << 26) - (1 << 2); | |
9621 | insn1 |= 58 << 26; /* ld */ | |
9622 | insn2 = 0x7c636a14; /* add 3,3,13 */ | |
9623 | rel[1].r_info = ELF64_R_INFO (r_symndx2, R_PPC64_NONE); | |
9624 | if ((tls_mask & TLS_EXPLICIT) == 0) | |
9625 | r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3) | |
9626 | + R_PPC64_GOT_TPREL16_DS); | |
9627 | else | |
9628 | r_type += R_PPC64_TOC16_DS - R_PPC64_TOC16; | |
9629 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
411e1bfb AM |
9630 | } |
9631 | else | |
951fd09b AM |
9632 | { |
9633 | /* LE */ | |
9634 | insn1 = 0x3c6d0000; /* addis 3,13,0 */ | |
9635 | insn2 = 0x38630000; /* addi 3,3,0 */ | |
9636 | if (tls_gd == 0) | |
9637 | { | |
9638 | /* Was an LD reloc. */ | |
9639 | r_symndx = 0; | |
e1918d23 AM |
9640 | rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET; |
9641 | rel[1].r_addend = htab->elf.tls_sec->vma + DTP_OFFSET; | |
951fd09b | 9642 | } |
0d4792f7 AM |
9643 | else if (toc_symndx != 0) |
9644 | r_symndx = toc_symndx; | |
951fd09b AM |
9645 | r_type = R_PPC64_TPREL16_HA; |
9646 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
9647 | rel[1].r_info = ELF64_R_INFO (r_symndx, | |
9648 | R_PPC64_TPREL16_LO); | |
9649 | rel[1].r_offset += 2; | |
9650 | } | |
9651 | if (insn3 == NOP | |
9652 | || insn3 == CROR_151515 || insn3 == CROR_313131) | |
9653 | { | |
9654 | insn3 = insn2; | |
9655 | insn2 = NOP; | |
9656 | rel[1].r_offset += 4; | |
9657 | } | |
9658 | bfd_put_32 (output_bfd, insn1, contents + rel->r_offset - 2); | |
9659 | bfd_put_32 (output_bfd, insn2, contents + offset); | |
9660 | bfd_put_32 (output_bfd, insn3, contents + offset + 4); | |
0d4792f7 | 9661 | if (tls_gd == 0 || toc_symndx != 0) |
951fd09b | 9662 | { |
0d4792f7 AM |
9663 | /* We changed the symbol. Start over in order |
9664 | to get h, sym, sec etc. right. */ | |
951fd09b AM |
9665 | rel--; |
9666 | continue; | |
9667 | } | |
411e1bfb | 9668 | } |
411e1bfb | 9669 | } |
411e1bfb AM |
9670 | break; |
9671 | ||
9672 | case R_PPC64_DTPMOD64: | |
951fd09b AM |
9673 | if (rel + 1 < relend |
9674 | && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64) | |
9675 | && rel[1].r_offset == rel->r_offset + 8) | |
411e1bfb | 9676 | { |
951fd09b AM |
9677 | if ((tls_mask & TLS_GD) == 0) |
9678 | { | |
9679 | rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_NONE); | |
9680 | if ((tls_mask & TLS_TPRELGD) != 0) | |
9681 | r_type = R_PPC64_TPREL64; | |
9682 | else | |
9683 | { | |
4ce794b7 | 9684 | bfd_put_64 (output_bfd, 1, contents + rel->r_offset); |
951fd09b AM |
9685 | r_type = R_PPC64_NONE; |
9686 | } | |
9687 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
9688 | } | |
9689 | } | |
9690 | else | |
9691 | { | |
9692 | if ((tls_mask & TLS_LD) == 0) | |
411e1bfb | 9693 | { |
4ce794b7 | 9694 | bfd_put_64 (output_bfd, 1, contents + rel->r_offset); |
411e1bfb | 9695 | r_type = R_PPC64_NONE; |
951fd09b | 9696 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); |
411e1bfb | 9697 | } |
411e1bfb AM |
9698 | } |
9699 | break; | |
9700 | ||
9701 | case R_PPC64_TPREL64: | |
951fd09b | 9702 | if ((tls_mask & TLS_TPREL) == 0) |
411e1bfb AM |
9703 | { |
9704 | r_type = R_PPC64_NONE; | |
9705 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
9706 | } | |
9707 | break; | |
9708 | } | |
9709 | ||
9710 | /* Handle other relocations that tweak non-addend part of insn. */ | |
86c76c7b | 9711 | insn = 0; |
b25116a9 AM |
9712 | max_br_offset = 1 << 25; |
9713 | addend = rel->r_addend; | |
65f38f15 | 9714 | switch (r_type) |
5bd4f169 AM |
9715 | { |
9716 | default: | |
65f38f15 | 9717 | break; |
5bd4f169 | 9718 | |
65f38f15 AM |
9719 | /* Branch taken prediction relocations. */ |
9720 | case R_PPC64_ADDR14_BRTAKEN: | |
9721 | case R_PPC64_REL14_BRTAKEN: | |
cedb70c5 KH |
9722 | insn = 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */ |
9723 | /* Fall thru. */ | |
65f38f15 | 9724 | |
86c76c7b | 9725 | /* Branch not taken prediction relocations. */ |
65f38f15 AM |
9726 | case R_PPC64_ADDR14_BRNTAKEN: |
9727 | case R_PPC64_REL14_BRNTAKEN: | |
411e1bfb AM |
9728 | insn |= bfd_get_32 (output_bfd, |
9729 | contents + rel->r_offset) & ~(0x01 << 21); | |
b25116a9 | 9730 | /* Fall thru. */ |
86c76c7b | 9731 | |
b25116a9 AM |
9732 | case R_PPC64_REL14: |
9733 | max_br_offset = 1 << 15; | |
9734 | /* Fall thru. */ | |
5bd4f169 | 9735 | |
65f38f15 | 9736 | case R_PPC64_REL24: |
ad8e1ba5 AM |
9737 | /* Calls to functions with a different TOC, such as calls to |
9738 | shared objects, need to alter the TOC pointer. This is | |
9739 | done using a linkage stub. A REL24 branching to these | |
9740 | linkage stubs needs to be followed by a nop, as the nop | |
9741 | will be replaced with an instruction to restore the TOC | |
9742 | base pointer. */ | |
b25116a9 | 9743 | stub_entry = NULL; |
8387904d | 9744 | fdh = h; |
ad8e1ba5 | 9745 | if (((h != NULL |
039b3fef AM |
9746 | && (((fdh = h->oh) != NULL |
9747 | && fdh->elf.plt.plist != NULL) | |
9748 | || (fdh = h)->elf.plt.plist != NULL)) | |
8387904d | 9749 | || (sec != NULL |
ad8e1ba5 | 9750 | && sec->output_section != NULL |
b25116a9 | 9751 | && sec->id <= htab->top_id |
ad8e1ba5 AM |
9752 | && (htab->stub_group[sec->id].toc_off |
9753 | != htab->stub_group[input_section->id].toc_off))) | |
721956f4 | 9754 | && (stub_entry = ppc_get_stub_entry (input_section, sec, fdh, |
ad8e1ba5 AM |
9755 | rel, htab)) != NULL |
9756 | && (stub_entry->stub_type == ppc_stub_plt_call | |
9757 | || stub_entry->stub_type == ppc_stub_plt_branch_r2off | |
9758 | || stub_entry->stub_type == ppc_stub_long_branch_r2off)) | |
41bd81ab | 9759 | { |
b25116a9 | 9760 | bfd_boolean can_plt_call = FALSE; |
721956f4 | 9761 | |
eea6121a | 9762 | if (rel->r_offset + 8 <= input_section->size) |
41bd81ab | 9763 | { |
b25116a9 AM |
9764 | unsigned long nop; |
9765 | nop = bfd_get_32 (input_bfd, contents + rel->r_offset + 4); | |
9766 | if (nop == NOP | |
9767 | || nop == CROR_151515 || nop == CROR_313131) | |
41bd81ab | 9768 | { |
4ce794b7 | 9769 | bfd_put_32 (input_bfd, LD_R2_40R1, |
411e1bfb | 9770 | contents + rel->r_offset + 4); |
b25116a9 | 9771 | can_plt_call = TRUE; |
41bd81ab | 9772 | } |
5bd4f169 | 9773 | } |
721956f4 AM |
9774 | |
9775 | if (!can_plt_call) | |
9776 | { | |
ad8e1ba5 AM |
9777 | if (stub_entry->stub_type == ppc_stub_plt_call) |
9778 | { | |
9779 | /* If this is a plain branch rather than a branch | |
9780 | and link, don't require a nop. */ | |
b25116a9 AM |
9781 | unsigned long br; |
9782 | br = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
9783 | if ((br & 1) == 0) | |
9784 | can_plt_call = TRUE; | |
ad8e1ba5 | 9785 | } |
6ab189d5 | 9786 | else if (h != NULL |
039b3fef | 9787 | && strcmp (h->elf.root.root.string, |
6ab189d5 AM |
9788 | ".__libc_start_main") == 0) |
9789 | { | |
9790 | /* Allow crt1 branch to go via a toc adjusting stub. */ | |
b25116a9 | 9791 | can_plt_call = TRUE; |
6ab189d5 | 9792 | } |
ad8e1ba5 AM |
9793 | else |
9794 | { | |
9795 | if (strcmp (input_section->output_section->name, | |
9796 | ".init") == 0 | |
9797 | || strcmp (input_section->output_section->name, | |
9798 | ".fini") == 0) | |
9799 | (*_bfd_error_handler) | |
d003868e | 9800 | (_("%B(%A+0x%lx): automatic multiple TOCs " |
ad8e1ba5 AM |
9801 | "not supported using your crt files; " |
9802 | "recompile with -mminimal-toc or upgrade gcc"), | |
d003868e AM |
9803 | input_bfd, |
9804 | input_section, | |
ad8e1ba5 AM |
9805 | (long) rel->r_offset); |
9806 | else | |
9807 | (*_bfd_error_handler) | |
d003868e | 9808 | (_("%B(%A+0x%lx): sibling call optimization to `%s' " |
ad8e1ba5 AM |
9809 | "does not allow automatic multiple TOCs; " |
9810 | "recompile with -mminimal-toc or " | |
9811 | "-fno-optimize-sibling-calls, " | |
9812 | "or make `%s' extern"), | |
d003868e AM |
9813 | input_bfd, |
9814 | input_section, | |
ad8e1ba5 AM |
9815 | (long) rel->r_offset, |
9816 | sym_name, | |
9817 | sym_name); | |
9818 | bfd_set_error (bfd_error_bad_value); | |
9819 | ret = FALSE; | |
9820 | } | |
721956f4 AM |
9821 | } |
9822 | ||
b25116a9 AM |
9823 | if (can_plt_call |
9824 | && stub_entry->stub_type == ppc_stub_plt_call) | |
9825 | unresolved_reloc = FALSE; | |
9826 | } | |
9827 | ||
8387904d AM |
9828 | if (stub_entry == NULL |
9829 | && get_opd_info (sec) != NULL) | |
9830 | { | |
9831 | /* The branch destination is the value of the opd entry. */ | |
9832 | bfd_vma off = (relocation - sec->output_section->vma | |
9833 | - sec->output_offset + rel->r_addend); | |
9834 | bfd_vma dest = opd_entry_value (sec, off, NULL, NULL); | |
9835 | if (dest != (bfd_vma) -1) | |
9836 | { | |
9837 | relocation = dest; | |
9838 | addend = 0; | |
9839 | } | |
9840 | } | |
9841 | ||
b25116a9 AM |
9842 | /* If the branch is out of reach we ought to have a long |
9843 | branch stub. */ | |
9844 | from = (rel->r_offset | |
9845 | + input_section->output_offset | |
9846 | + input_section->output_section->vma); | |
9847 | ||
9848 | if (stub_entry == NULL | |
9849 | && (relocation + rel->r_addend - from + max_br_offset | |
9850 | >= 2 * max_br_offset) | |
9851 | && r_type != R_PPC64_ADDR14_BRTAKEN | |
9852 | && r_type != R_PPC64_ADDR14_BRNTAKEN) | |
039b3fef AM |
9853 | stub_entry = ppc_get_stub_entry (input_section, sec, h, rel, |
9854 | htab); | |
b25116a9 AM |
9855 | |
9856 | if (stub_entry != NULL) | |
9857 | { | |
9858 | /* Munge up the value and addend so that we call the stub | |
9859 | rather than the procedure directly. */ | |
9860 | relocation = (stub_entry->stub_offset | |
9861 | + stub_entry->stub_sec->output_offset | |
9862 | + stub_entry->stub_sec->output_section->vma); | |
9863 | addend = 0; | |
9864 | } | |
9865 | ||
9866 | if (insn != 0) | |
9867 | { | |
9868 | if (is_power4) | |
721956f4 | 9869 | { |
b25116a9 AM |
9870 | /* Set 'a' bit. This is 0b00010 in BO field for branch |
9871 | on CR(BI) insns (BO == 001at or 011at), and 0b01000 | |
9872 | for branch on CTR insns (BO == 1a00t or 1a01t). */ | |
9873 | if ((insn & (0x14 << 21)) == (0x04 << 21)) | |
9874 | insn |= 0x02 << 21; | |
9875 | else if ((insn & (0x14 << 21)) == (0x10 << 21)) | |
9876 | insn |= 0x08 << 21; | |
9877 | else | |
9878 | break; | |
9879 | } | |
9880 | else | |
9881 | { | |
9882 | /* Invert 'y' bit if not the default. */ | |
9883 | if ((bfd_signed_vma) (relocation + rel->r_addend - from) < 0) | |
9884 | insn ^= 0x01 << 21; | |
721956f4 | 9885 | } |
b25116a9 AM |
9886 | |
9887 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset); | |
5bd4f169 | 9888 | } |
e86ce104 | 9889 | |
06da1e8e AM |
9890 | /* NOP out calls to undefined weak functions. |
9891 | We can thus call a weak function without first | |
9892 | checking whether the function is defined. */ | |
b25116a9 | 9893 | else if (h != NULL |
039b3fef | 9894 | && h->elf.root.type == bfd_link_hash_undefweak |
b25116a9 AM |
9895 | && r_type == R_PPC64_REL24 |
9896 | && relocation == 0 | |
9897 | && rel->r_addend == 0) | |
e86ce104 | 9898 | { |
06da1e8e AM |
9899 | bfd_put_32 (output_bfd, NOP, contents + rel->r_offset); |
9900 | continue; | |
e86ce104 | 9901 | } |
65f38f15 AM |
9902 | break; |
9903 | } | |
5bd4f169 | 9904 | |
65f38f15 | 9905 | /* Set `addend'. */ |
411e1bfb | 9906 | tls_type = 0; |
65f38f15 AM |
9907 | switch (r_type) |
9908 | { | |
9909 | default: | |
9910 | (*_bfd_error_handler) | |
d003868e AM |
9911 | (_("%B: unknown relocation type %d for symbol %s"), |
9912 | input_bfd, (int) r_type, sym_name); | |
5bd4f169 | 9913 | |
65f38f15 | 9914 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 9915 | ret = FALSE; |
65f38f15 | 9916 | continue; |
5bd4f169 | 9917 | |
65f38f15 | 9918 | case R_PPC64_NONE: |
411e1bfb | 9919 | case R_PPC64_TLS: |
04c9666a AM |
9920 | case R_PPC64_GNU_VTINHERIT: |
9921 | case R_PPC64_GNU_VTENTRY: | |
65f38f15 | 9922 | continue; |
5bd4f169 AM |
9923 | |
9924 | /* GOT16 relocations. Like an ADDR16 using the symbol's | |
9925 | address in the GOT as relocation value instead of the | |
411e1bfb | 9926 | symbol's value itself. Also, create a GOT entry for the |
5bd4f169 | 9927 | symbol and put the symbol value there. */ |
411e1bfb AM |
9928 | case R_PPC64_GOT_TLSGD16: |
9929 | case R_PPC64_GOT_TLSGD16_LO: | |
9930 | case R_PPC64_GOT_TLSGD16_HI: | |
9931 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b | 9932 | tls_type = TLS_TLS | TLS_GD; |
411e1bfb AM |
9933 | goto dogot; |
9934 | ||
9935 | case R_PPC64_GOT_TLSLD16: | |
9936 | case R_PPC64_GOT_TLSLD16_LO: | |
9937 | case R_PPC64_GOT_TLSLD16_HI: | |
9938 | case R_PPC64_GOT_TLSLD16_HA: | |
951fd09b | 9939 | tls_type = TLS_TLS | TLS_LD; |
411e1bfb AM |
9940 | goto dogot; |
9941 | ||
9942 | case R_PPC64_GOT_TPREL16_DS: | |
9943 | case R_PPC64_GOT_TPREL16_LO_DS: | |
9944 | case R_PPC64_GOT_TPREL16_HI: | |
9945 | case R_PPC64_GOT_TPREL16_HA: | |
9946 | tls_type = TLS_TLS | TLS_TPREL; | |
9947 | goto dogot; | |
9948 | ||
9949 | case R_PPC64_GOT_DTPREL16_DS: | |
9950 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
9951 | case R_PPC64_GOT_DTPREL16_HI: | |
9952 | case R_PPC64_GOT_DTPREL16_HA: | |
9953 | tls_type = TLS_TLS | TLS_DTPREL; | |
9954 | goto dogot; | |
9955 | ||
65f38f15 AM |
9956 | case R_PPC64_GOT16: |
9957 | case R_PPC64_GOT16_LO: | |
9958 | case R_PPC64_GOT16_HI: | |
9959 | case R_PPC64_GOT16_HA: | |
9960 | case R_PPC64_GOT16_DS: | |
9961 | case R_PPC64_GOT16_LO_DS: | |
411e1bfb | 9962 | dogot: |
5bd4f169 AM |
9963 | { |
9964 | /* Relocation is to the entry for this symbol in the global | |
9965 | offset table. */ | |
e717da7e | 9966 | asection *got; |
d881513a | 9967 | bfd_vma *offp; |
5bd4f169 | 9968 | bfd_vma off; |
d881513a | 9969 | unsigned long indx = 0; |
65f38f15 | 9970 | |
d881513a AM |
9971 | if (tls_type == (TLS_TLS | TLS_LD) |
9972 | && (h == NULL | |
f5385ebf | 9973 | || !h->elf.def_dynamic)) |
e717da7e | 9974 | offp = &ppc64_tlsld_got (input_bfd)->offset; |
411e1bfb | 9975 | else |
5bd4f169 | 9976 | { |
d881513a | 9977 | struct got_entry *ent; |
5bd4f169 | 9978 | |
d881513a AM |
9979 | if (h != NULL) |
9980 | { | |
9981 | bfd_boolean dyn = htab->elf.dynamic_sections_created; | |
039b3fef AM |
9982 | if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, |
9983 | &h->elf) | |
d881513a | 9984 | || (info->shared |
039b3fef | 9985 | && SYMBOL_REFERENCES_LOCAL (info, &h->elf))) |
d881513a AM |
9986 | /* This is actually a static link, or it is a |
9987 | -Bsymbolic link and the symbol is defined | |
9988 | locally, or the symbol was forced to be local | |
9989 | because of a version file. */ | |
9990 | ; | |
9991 | else | |
9992 | { | |
039b3fef | 9993 | indx = h->elf.dynindx; |
d881513a AM |
9994 | unresolved_reloc = FALSE; |
9995 | } | |
039b3fef | 9996 | ent = h->elf.got.glist; |
d881513a | 9997 | } |
411e1bfb | 9998 | else |
5bd4f169 | 9999 | { |
d881513a AM |
10000 | if (local_got_ents == NULL) |
10001 | abort (); | |
10002 | ent = local_got_ents[r_symndx]; | |
5bd4f169 | 10003 | } |
d881513a AM |
10004 | |
10005 | for (; ent != NULL; ent = ent->next) | |
10006 | if (ent->addend == rel->r_addend | |
e717da7e | 10007 | && ent->owner == input_bfd |
d881513a AM |
10008 | && ent->tls_type == tls_type) |
10009 | break; | |
10010 | if (ent == NULL) | |
10011 | abort (); | |
10012 | offp = &ent->got.offset; | |
5bd4f169 | 10013 | } |
411e1bfb | 10014 | |
e717da7e AM |
10015 | got = ppc64_elf_tdata (input_bfd)->got; |
10016 | if (got == NULL) | |
10017 | abort (); | |
10018 | ||
411e1bfb AM |
10019 | /* The offset must always be a multiple of 8. We use the |
10020 | least significant bit to record whether we have already | |
10021 | processed this entry. */ | |
d881513a | 10022 | off = *offp; |
411e1bfb AM |
10023 | if ((off & 1) != 0) |
10024 | off &= ~1; | |
5bd4f169 AM |
10025 | else |
10026 | { | |
411e1bfb AM |
10027 | /* Generate relocs for the dynamic linker, except in |
10028 | the case of TLSLD where we'll use one entry per | |
10029 | module. */ | |
e717da7e AM |
10030 | asection *relgot = ppc64_elf_tdata (input_bfd)->relgot; |
10031 | ||
d881513a | 10032 | *offp = off | 1; |
4e795f50 AM |
10033 | if ((info->shared || indx != 0) |
10034 | && (h == NULL | |
039b3fef AM |
10035 | || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT |
10036 | || h->elf.root.type != bfd_link_hash_undefweak)) | |
5bd4f169 | 10037 | { |
e717da7e AM |
10038 | outrel.r_offset = (got->output_section->vma |
10039 | + got->output_offset | |
411e1bfb | 10040 | + off); |
81407a69 | 10041 | outrel.r_addend = rel->r_addend; |
d881513a | 10042 | if (tls_type & (TLS_LD | TLS_GD)) |
5bd4f169 | 10043 | { |
411e1bfb | 10044 | outrel.r_addend = 0; |
e515b051 | 10045 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPMOD64); |
d881513a AM |
10046 | if (tls_type == (TLS_TLS | TLS_GD)) |
10047 | { | |
e717da7e AM |
10048 | loc = relgot->contents; |
10049 | loc += (relgot->reloc_count++ | |
d881513a AM |
10050 | * sizeof (Elf64_External_Rela)); |
10051 | bfd_elf64_swap_reloca_out (output_bfd, | |
10052 | &outrel, loc); | |
e515b051 | 10053 | outrel.r_offset += 8; |
81407a69 | 10054 | outrel.r_addend = rel->r_addend; |
d881513a AM |
10055 | outrel.r_info |
10056 | = ELF64_R_INFO (indx, R_PPC64_DTPREL64); | |
d881513a | 10057 | } |
411e1bfb | 10058 | } |
951fd09b | 10059 | else if (tls_type == (TLS_TLS | TLS_DTPREL)) |
411e1bfb | 10060 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPREL64); |
951fd09b | 10061 | else if (tls_type == (TLS_TLS | TLS_TPREL)) |
411e1bfb AM |
10062 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_TPREL64); |
10063 | else if (indx == 0) | |
81407a69 AM |
10064 | { |
10065 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_RELATIVE); | |
10066 | ||
10067 | /* Write the .got section contents for the sake | |
10068 | of prelink. */ | |
e717da7e | 10069 | loc = got->contents + off; |
23fbd6fa JJ |
10070 | bfd_put_64 (output_bfd, outrel.r_addend + relocation, |
10071 | loc); | |
81407a69 | 10072 | } |
411e1bfb AM |
10073 | else |
10074 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_GLOB_DAT); | |
81407a69 AM |
10075 | |
10076 | if (indx == 0 && tls_type != (TLS_TLS | TLS_LD)) | |
e515b051 AM |
10077 | { |
10078 | outrel.r_addend += relocation; | |
10079 | if (tls_type & (TLS_GD | TLS_DTPREL | TLS_TPREL)) | |
e1918d23 | 10080 | outrel.r_addend -= htab->elf.tls_sec->vma; |
e515b051 | 10081 | } |
e717da7e AM |
10082 | loc = relgot->contents; |
10083 | loc += (relgot->reloc_count++ | |
411e1bfb AM |
10084 | * sizeof (Elf64_External_Rela)); |
10085 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); | |
10086 | } | |
10087 | ||
ad8e1ba5 | 10088 | /* Init the .got section contents here if we're not |
81407a69 | 10089 | emitting a reloc. */ |
d881513a | 10090 | else |
411e1bfb | 10091 | { |
d881513a | 10092 | relocation += rel->r_addend; |
7b609f53 AM |
10093 | if (tls_type == (TLS_TLS | TLS_LD)) |
10094 | relocation = 1; | |
10095 | else if (tls_type != 0) | |
411e1bfb | 10096 | { |
e1918d23 | 10097 | relocation -= htab->elf.tls_sec->vma + DTP_OFFSET; |
7b609f53 | 10098 | if (tls_type == (TLS_TLS | TLS_TPREL)) |
411e1bfb | 10099 | relocation += DTP_OFFSET - TP_OFFSET; |
5bd4f169 | 10100 | |
7b609f53 AM |
10101 | if (tls_type == (TLS_TLS | TLS_GD)) |
10102 | { | |
10103 | bfd_put_64 (output_bfd, relocation, | |
e717da7e | 10104 | got->contents + off + 8); |
7b609f53 AM |
10105 | relocation = 1; |
10106 | } | |
411e1bfb | 10107 | } |
7b609f53 | 10108 | |
411e1bfb | 10109 | bfd_put_64 (output_bfd, relocation, |
e717da7e | 10110 | got->contents + off); |
5bd4f169 AM |
10111 | } |
10112 | } | |
10113 | ||
65f38f15 AM |
10114 | if (off >= (bfd_vma) -2) |
10115 | abort (); | |
10116 | ||
e717da7e | 10117 | relocation = got->output_offset + off; |
65f38f15 | 10118 | |
5bd4f169 | 10119 | /* TOC base (r2) is TOC start plus 0x8000. */ |
e717da7e | 10120 | addend = -TOC_BASE_OFF; |
5bd4f169 | 10121 | } |
65f38f15 AM |
10122 | break; |
10123 | ||
10124 | case R_PPC64_PLT16_HA: | |
10125 | case R_PPC64_PLT16_HI: | |
10126 | case R_PPC64_PLT16_LO: | |
10127 | case R_PPC64_PLT32: | |
10128 | case R_PPC64_PLT64: | |
10129 | /* Relocation is to the entry for this symbol in the | |
10130 | procedure linkage table. */ | |
10131 | ||
10132 | /* Resolve a PLT reloc against a local symbol directly, | |
10133 | without using the procedure linkage table. */ | |
10134 | if (h == NULL) | |
10135 | break; | |
10136 | ||
411e1bfb AM |
10137 | /* It's possible that we didn't make a PLT entry for this |
10138 | symbol. This happens when statically linking PIC code, | |
10139 | or when using -Bsymbolic. Go find a match if there is a | |
10140 | PLT entry. */ | |
4ce794b7 | 10141 | if (htab->plt != NULL) |
65f38f15 | 10142 | { |
411e1bfb | 10143 | struct plt_entry *ent; |
039b3fef | 10144 | for (ent = h->elf.plt.plist; ent != NULL; ent = ent->next) |
411e1bfb AM |
10145 | if (ent->addend == rel->r_addend |
10146 | && ent->plt.offset != (bfd_vma) -1) | |
10147 | { | |
4ce794b7 AM |
10148 | relocation = (htab->plt->output_section->vma |
10149 | + htab->plt->output_offset | |
411e1bfb AM |
10150 | + ent->plt.offset); |
10151 | unresolved_reloc = FALSE; | |
10152 | } | |
65f38f15 | 10153 | } |
65f38f15 | 10154 | break; |
5bd4f169 | 10155 | |
0b13192e AM |
10156 | case R_PPC64_TOC: |
10157 | /* Relocation value is TOC base. */ | |
10158 | relocation = TOCstart; | |
10159 | if (r_symndx == 0) | |
10160 | relocation += htab->stub_group[input_section->id].toc_off; | |
8517fae7 AM |
10161 | else if (unresolved_reloc) |
10162 | ; | |
10163 | else if (sec != NULL && sec->id <= htab->top_id) | |
0b13192e AM |
10164 | relocation += htab->stub_group[sec->id].toc_off; |
10165 | else | |
10166 | unresolved_reloc = TRUE; | |
10167 | goto dodyn2; | |
10168 | ||
5bd4f169 AM |
10169 | /* TOC16 relocs. We want the offset relative to the TOC base, |
10170 | which is the address of the start of the TOC plus 0x8000. | |
10171 | The TOC consists of sections .got, .toc, .tocbss, and .plt, | |
10172 | in this order. */ | |
65f38f15 AM |
10173 | case R_PPC64_TOC16: |
10174 | case R_PPC64_TOC16_LO: | |
10175 | case R_PPC64_TOC16_HI: | |
10176 | case R_PPC64_TOC16_DS: | |
10177 | case R_PPC64_TOC16_LO_DS: | |
10178 | case R_PPC64_TOC16_HA: | |
ad8e1ba5 | 10179 | addend -= TOCstart + htab->stub_group[input_section->id].toc_off; |
5bd4f169 AM |
10180 | break; |
10181 | ||
10182 | /* Relocate against the beginning of the section. */ | |
65f38f15 AM |
10183 | case R_PPC64_SECTOFF: |
10184 | case R_PPC64_SECTOFF_LO: | |
10185 | case R_PPC64_SECTOFF_HI: | |
10186 | case R_PPC64_SECTOFF_DS: | |
10187 | case R_PPC64_SECTOFF_LO_DS: | |
10188 | case R_PPC64_SECTOFF_HA: | |
4ce794b7 | 10189 | if (sec != NULL) |
65f38f15 | 10190 | addend -= sec->output_section->vma; |
5bd4f169 AM |
10191 | break; |
10192 | ||
721956f4 AM |
10193 | case R_PPC64_REL14: |
10194 | case R_PPC64_REL14_BRNTAKEN: | |
10195 | case R_PPC64_REL14_BRTAKEN: | |
5d1634d7 AM |
10196 | case R_PPC64_REL24: |
10197 | break; | |
10198 | ||
411e1bfb AM |
10199 | case R_PPC64_TPREL16: |
10200 | case R_PPC64_TPREL16_LO: | |
10201 | case R_PPC64_TPREL16_HI: | |
10202 | case R_PPC64_TPREL16_HA: | |
10203 | case R_PPC64_TPREL16_DS: | |
10204 | case R_PPC64_TPREL16_LO_DS: | |
10205 | case R_PPC64_TPREL16_HIGHER: | |
10206 | case R_PPC64_TPREL16_HIGHERA: | |
10207 | case R_PPC64_TPREL16_HIGHEST: | |
10208 | case R_PPC64_TPREL16_HIGHESTA: | |
e1918d23 | 10209 | addend -= htab->elf.tls_sec->vma + TP_OFFSET; |
411e1bfb AM |
10210 | if (info->shared) |
10211 | /* The TPREL16 relocs shouldn't really be used in shared | |
10212 | libs as they will result in DT_TEXTREL being set, but | |
10213 | support them anyway. */ | |
10214 | goto dodyn; | |
10215 | break; | |
10216 | ||
10217 | case R_PPC64_DTPREL16: | |
10218 | case R_PPC64_DTPREL16_LO: | |
10219 | case R_PPC64_DTPREL16_HI: | |
10220 | case R_PPC64_DTPREL16_HA: | |
10221 | case R_PPC64_DTPREL16_DS: | |
10222 | case R_PPC64_DTPREL16_LO_DS: | |
10223 | case R_PPC64_DTPREL16_HIGHER: | |
10224 | case R_PPC64_DTPREL16_HIGHERA: | |
10225 | case R_PPC64_DTPREL16_HIGHEST: | |
10226 | case R_PPC64_DTPREL16_HIGHESTA: | |
e1918d23 | 10227 | addend -= htab->elf.tls_sec->vma + DTP_OFFSET; |
411e1bfb AM |
10228 | break; |
10229 | ||
e515b051 AM |
10230 | case R_PPC64_DTPMOD64: |
10231 | relocation = 1; | |
10232 | addend = 0; | |
10233 | goto dodyn; | |
10234 | ||
411e1bfb | 10235 | case R_PPC64_TPREL64: |
e1918d23 | 10236 | addend -= htab->elf.tls_sec->vma + TP_OFFSET; |
411e1bfb AM |
10237 | goto dodyn; |
10238 | ||
10239 | case R_PPC64_DTPREL64: | |
e1918d23 | 10240 | addend -= htab->elf.tls_sec->vma + DTP_OFFSET; |
411e1bfb AM |
10241 | /* Fall thru */ |
10242 | ||
65f38f15 AM |
10243 | /* Relocations that may need to be propagated if this is a |
10244 | dynamic object. */ | |
04c9666a | 10245 | case R_PPC64_REL30: |
65f38f15 AM |
10246 | case R_PPC64_REL32: |
10247 | case R_PPC64_REL64: | |
10248 | case R_PPC64_ADDR14: | |
10249 | case R_PPC64_ADDR14_BRNTAKEN: | |
10250 | case R_PPC64_ADDR14_BRTAKEN: | |
10251 | case R_PPC64_ADDR16: | |
10252 | case R_PPC64_ADDR16_DS: | |
10253 | case R_PPC64_ADDR16_HA: | |
10254 | case R_PPC64_ADDR16_HI: | |
10255 | case R_PPC64_ADDR16_HIGHER: | |
10256 | case R_PPC64_ADDR16_HIGHERA: | |
10257 | case R_PPC64_ADDR16_HIGHEST: | |
10258 | case R_PPC64_ADDR16_HIGHESTA: | |
10259 | case R_PPC64_ADDR16_LO: | |
10260 | case R_PPC64_ADDR16_LO_DS: | |
10261 | case R_PPC64_ADDR24: | |
65f38f15 AM |
10262 | case R_PPC64_ADDR32: |
10263 | case R_PPC64_ADDR64: | |
10264 | case R_PPC64_UADDR16: | |
10265 | case R_PPC64_UADDR32: | |
10266 | case R_PPC64_UADDR64: | |
ec338859 AM |
10267 | /* r_symndx will be zero only for relocs against symbols |
10268 | from removed linkonce sections, or sections discarded by | |
10269 | a linker script. */ | |
411e1bfb | 10270 | dodyn: |
5d1634d7 AM |
10271 | if (r_symndx == 0) |
10272 | break; | |
10273 | /* Fall thru. */ | |
10274 | ||
0b13192e | 10275 | dodyn2: |
5d1634d7 | 10276 | if ((input_section->flags & SEC_ALLOC) == 0) |
ec338859 AM |
10277 | break; |
10278 | ||
41bd81ab AM |
10279 | if (NO_OPD_RELOCS && is_opd) |
10280 | break; | |
10281 | ||
65f38f15 | 10282 | if ((info->shared |
4e795f50 | 10283 | && (h == NULL |
039b3fef AM |
10284 | || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT |
10285 | || h->elf.root.type != bfd_link_hash_undefweak) | |
411e1bfb | 10286 | && (MUST_BE_DYN_RELOC (r_type) |
039b3fef | 10287 | || !SYMBOL_CALLS_LOCAL (info, &h->elf))) |
f4656909 AM |
10288 | || (ELIMINATE_COPY_RELOCS |
10289 | && !info->shared | |
65f38f15 | 10290 | && h != NULL |
039b3fef | 10291 | && h->elf.dynindx != -1 |
f5385ebf AM |
10292 | && !h->elf.non_got_ref |
10293 | && h->elf.def_dynamic | |
10294 | && !h->elf.def_regular)) | |
65f38f15 AM |
10295 | { |
10296 | Elf_Internal_Rela outrel; | |
b34976b6 | 10297 | bfd_boolean skip, relocate; |
65f38f15 | 10298 | asection *sreloc; |
947216bf | 10299 | bfd_byte *loc; |
1cf1f670 | 10300 | bfd_vma out_off; |
65f38f15 AM |
10301 | |
10302 | /* When generating a dynamic object, these relocations | |
10303 | are copied into the output file to be resolved at run | |
10304 | time. */ | |
10305 | ||
b34976b6 AM |
10306 | skip = FALSE; |
10307 | relocate = FALSE; | |
65f38f15 | 10308 | |
1cf1f670 AM |
10309 | out_off = _bfd_elf_section_offset (output_bfd, info, |
10310 | input_section, rel->r_offset); | |
10311 | if (out_off == (bfd_vma) -1) | |
b34976b6 | 10312 | skip = TRUE; |
1cf1f670 | 10313 | else if (out_off == (bfd_vma) -2) |
b34976b6 | 10314 | skip = TRUE, relocate = TRUE; |
1cf1f670 AM |
10315 | out_off += (input_section->output_section->vma |
10316 | + input_section->output_offset); | |
10317 | outrel.r_offset = out_off; | |
411e1bfb | 10318 | outrel.r_addend = rel->r_addend; |
65f38f15 | 10319 | |
1cf1f670 AM |
10320 | /* Optimize unaligned reloc use. */ |
10321 | if ((r_type == R_PPC64_ADDR64 && (out_off & 7) != 0) | |
10322 | || (r_type == R_PPC64_UADDR64 && (out_off & 7) == 0)) | |
10323 | r_type ^= R_PPC64_ADDR64 ^ R_PPC64_UADDR64; | |
10324 | else if ((r_type == R_PPC64_ADDR32 && (out_off & 3) != 0) | |
10325 | || (r_type == R_PPC64_UADDR32 && (out_off & 3) == 0)) | |
10326 | r_type ^= R_PPC64_ADDR32 ^ R_PPC64_UADDR32; | |
10327 | else if ((r_type == R_PPC64_ADDR16 && (out_off & 1) != 0) | |
10328 | || (r_type == R_PPC64_UADDR16 && (out_off & 1) == 0)) | |
10329 | r_type ^= R_PPC64_ADDR16 ^ R_PPC64_UADDR16; | |
10330 | ||
65f38f15 | 10331 | if (skip) |
0bb2d96a | 10332 | memset (&outrel, 0, sizeof outrel); |
039b3fef | 10333 | else if (!SYMBOL_REFERENCES_LOCAL (info, &h->elf) |
0b13192e AM |
10334 | && !is_opd |
10335 | && r_type != R_PPC64_TOC) | |
039b3fef | 10336 | outrel.r_info = ELF64_R_INFO (h->elf.dynindx, r_type); |
65f38f15 AM |
10337 | else |
10338 | { | |
41bd81ab AM |
10339 | /* This symbol is local, or marked to become local, |
10340 | or this is an opd section reloc which must point | |
10341 | at a local function. */ | |
65f38f15 | 10342 | outrel.r_addend += relocation; |
e86ce104 | 10343 | if (r_type == R_PPC64_ADDR64 || r_type == R_PPC64_TOC) |
65f38f15 | 10344 | { |
3fad3c7c | 10345 | if (is_opd && h != NULL) |
afbe61cf AM |
10346 | { |
10347 | /* Lie about opd entries. This case occurs | |
10348 | when building shared libraries and we | |
10349 | reference a function in another shared | |
3fad3c7c AM |
10350 | lib. The same thing happens for a weak |
10351 | definition in an application that's | |
10352 | overridden by a strong definition in a | |
10353 | shared lib. (I believe this is a generic | |
10354 | bug in binutils handling of weak syms.) | |
10355 | In these cases we won't use the opd | |
1e2f5b6e | 10356 | entry in this lib. */ |
b34976b6 | 10357 | unresolved_reloc = FALSE; |
afbe61cf | 10358 | } |
65f38f15 | 10359 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); |
81407a69 AM |
10360 | |
10361 | /* We need to relocate .opd contents for ld.so. | |
10362 | Prelink also wants simple and consistent rules | |
10363 | for relocs. This make all RELATIVE relocs have | |
10364 | *r_offset equal to r_addend. */ | |
10365 | relocate = TRUE; | |
65f38f15 AM |
10366 | } |
10367 | else | |
10368 | { | |
10369 | long indx = 0; | |
10370 | ||
41bd81ab | 10371 | if (bfd_is_abs_section (sec)) |
65f38f15 AM |
10372 | ; |
10373 | else if (sec == NULL || sec->owner == NULL) | |
10374 | { | |
10375 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 10376 | return FALSE; |
65f38f15 AM |
10377 | } |
10378 | else | |
10379 | { | |
10380 | asection *osec; | |
10381 | ||
10382 | osec = sec->output_section; | |
10383 | indx = elf_section_data (osec)->dynindx; | |
10384 | ||
10385 | /* We are turning this relocation into one | |
10386 | against a section symbol, so subtract out | |
10387 | the output section's address but not the | |
10388 | offset of the input section in the output | |
10389 | section. */ | |
10390 | outrel.r_addend -= osec->vma; | |
10391 | } | |
10392 | ||
10393 | outrel.r_info = ELF64_R_INFO (indx, r_type); | |
10394 | } | |
10395 | } | |
10396 | ||
10397 | sreloc = elf_section_data (input_section)->sreloc; | |
10398 | if (sreloc == NULL) | |
10399 | abort (); | |
10400 | ||
947216bf AM |
10401 | loc = sreloc->contents; |
10402 | loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela); | |
65f38f15 AM |
10403 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); |
10404 | ||
10405 | /* If this reloc is against an external symbol, it will | |
10406 | be computed at runtime, so there's no need to do | |
81407a69 AM |
10407 | anything now. However, for the sake of prelink ensure |
10408 | that the section contents are a known value. */ | |
65f38f15 | 10409 | if (! relocate) |
81407a69 AM |
10410 | { |
10411 | unresolved_reloc = FALSE; | |
10412 | /* The value chosen here is quite arbitrary as ld.so | |
10413 | ignores section contents except for the special | |
10414 | case of .opd where the contents might be accessed | |
10415 | before relocation. Choose zero, as that won't | |
10416 | cause reloc overflow. */ | |
10417 | relocation = 0; | |
10418 | addend = 0; | |
10419 | /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs | |
10420 | to improve backward compatibility with older | |
10421 | versions of ld. */ | |
10422 | if (r_type == R_PPC64_ADDR64) | |
10423 | addend = outrel.r_addend; | |
10424 | /* Adjust pc_relative relocs to have zero in *r_offset. */ | |
4ce794b7 | 10425 | else if (ppc64_elf_howto_table[r_type]->pc_relative) |
000732f7 AM |
10426 | addend = (input_section->output_section->vma |
10427 | + input_section->output_offset | |
10428 | + rel->r_offset); | |
81407a69 | 10429 | } |
65f38f15 | 10430 | } |
5bd4f169 AM |
10431 | break; |
10432 | ||
65f38f15 AM |
10433 | case R_PPC64_COPY: |
10434 | case R_PPC64_GLOB_DAT: | |
10435 | case R_PPC64_JMP_SLOT: | |
10436 | case R_PPC64_RELATIVE: | |
10437 | /* We shouldn't ever see these dynamic relocs in relocatable | |
10438 | files. */ | |
ae9a127f | 10439 | /* Fall through. */ |
65f38f15 AM |
10440 | |
10441 | case R_PPC64_PLTGOT16: | |
10442 | case R_PPC64_PLTGOT16_DS: | |
10443 | case R_PPC64_PLTGOT16_HA: | |
10444 | case R_PPC64_PLTGOT16_HI: | |
10445 | case R_PPC64_PLTGOT16_LO: | |
10446 | case R_PPC64_PLTGOT16_LO_DS: | |
10447 | case R_PPC64_PLTREL32: | |
10448 | case R_PPC64_PLTREL64: | |
10449 | /* These ones haven't been implemented yet. */ | |
10450 | ||
10451 | (*_bfd_error_handler) | |
d003868e AM |
10452 | (_("%B: relocation %s is not supported for symbol %s."), |
10453 | input_bfd, | |
4ce794b7 | 10454 | ppc64_elf_howto_table[r_type]->name, sym_name); |
5bd4f169 AM |
10455 | |
10456 | bfd_set_error (bfd_error_invalid_operation); | |
b34976b6 | 10457 | ret = FALSE; |
5bd4f169 | 10458 | continue; |
65f38f15 | 10459 | } |
5bd4f169 | 10460 | |
65f38f15 AM |
10461 | /* Do any further special processing. */ |
10462 | switch (r_type) | |
10463 | { | |
10464 | default: | |
10465 | break; | |
10466 | ||
10467 | case R_PPC64_ADDR16_HA: | |
10468 | case R_PPC64_ADDR16_HIGHERA: | |
10469 | case R_PPC64_ADDR16_HIGHESTA: | |
86bbe32f AM |
10470 | case R_PPC64_GOT16_HA: |
10471 | case R_PPC64_PLTGOT16_HA: | |
65f38f15 AM |
10472 | case R_PPC64_PLT16_HA: |
10473 | case R_PPC64_TOC16_HA: | |
10474 | case R_PPC64_SECTOFF_HA: | |
411e1bfb AM |
10475 | case R_PPC64_TPREL16_HA: |
10476 | case R_PPC64_DTPREL16_HA: | |
10477 | case R_PPC64_GOT_TLSGD16_HA: | |
10478 | case R_PPC64_GOT_TLSLD16_HA: | |
10479 | case R_PPC64_GOT_TPREL16_HA: | |
10480 | case R_PPC64_GOT_DTPREL16_HA: | |
10481 | case R_PPC64_TPREL16_HIGHER: | |
10482 | case R_PPC64_TPREL16_HIGHERA: | |
10483 | case R_PPC64_TPREL16_HIGHEST: | |
10484 | case R_PPC64_TPREL16_HIGHESTA: | |
10485 | case R_PPC64_DTPREL16_HIGHER: | |
10486 | case R_PPC64_DTPREL16_HIGHERA: | |
10487 | case R_PPC64_DTPREL16_HIGHEST: | |
10488 | case R_PPC64_DTPREL16_HIGHESTA: | |
65f38f15 AM |
10489 | /* It's just possible that this symbol is a weak symbol |
10490 | that's not actually defined anywhere. In that case, | |
10491 | 'sec' would be NULL, and we should leave the symbol | |
10492 | alone (it will be set to zero elsewhere in the link). */ | |
10493 | if (sec != NULL) | |
e515b051 AM |
10494 | /* Add 0x10000 if sign bit in 0:15 is set. |
10495 | Bits 0:15 are not used. */ | |
10496 | addend += 0x8000; | |
65f38f15 AM |
10497 | break; |
10498 | ||
10499 | case R_PPC64_ADDR16_DS: | |
10500 | case R_PPC64_ADDR16_LO_DS: | |
10501 | case R_PPC64_GOT16_DS: | |
10502 | case R_PPC64_GOT16_LO_DS: | |
10503 | case R_PPC64_PLT16_LO_DS: | |
10504 | case R_PPC64_SECTOFF_DS: | |
10505 | case R_PPC64_SECTOFF_LO_DS: | |
10506 | case R_PPC64_TOC16_DS: | |
10507 | case R_PPC64_TOC16_LO_DS: | |
10508 | case R_PPC64_PLTGOT16_DS: | |
10509 | case R_PPC64_PLTGOT16_LO_DS: | |
411e1bfb AM |
10510 | case R_PPC64_GOT_TPREL16_DS: |
10511 | case R_PPC64_GOT_TPREL16_LO_DS: | |
10512 | case R_PPC64_GOT_DTPREL16_DS: | |
10513 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
10514 | case R_PPC64_TPREL16_DS: | |
10515 | case R_PPC64_TPREL16_LO_DS: | |
10516 | case R_PPC64_DTPREL16_DS: | |
10517 | case R_PPC64_DTPREL16_LO_DS: | |
adadcc0c AM |
10518 | insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3)); |
10519 | mask = 3; | |
10520 | /* If this reloc is against an lq insn, then the value must be | |
10521 | a multiple of 16. This is somewhat of a hack, but the | |
10522 | "correct" way to do this by defining _DQ forms of all the | |
10523 | _DS relocs bloats all reloc switches in this file. It | |
10524 | doesn't seem to make much sense to use any of these relocs | |
10525 | in data, so testing the insn should be safe. */ | |
494dac0c | 10526 | if ((insn & (0x3f << 26)) == (56u << 26)) |
adadcc0c AM |
10527 | mask = 15; |
10528 | if (((relocation + addend) & mask) != 0) | |
65f38f15 AM |
10529 | { |
10530 | (*_bfd_error_handler) | |
d003868e AM |
10531 | (_("%B: error: relocation %s not a multiple of %d"), |
10532 | input_bfd, | |
4ce794b7 | 10533 | ppc64_elf_howto_table[r_type]->name, |
adadcc0c | 10534 | mask + 1); |
65f38f15 | 10535 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 10536 | ret = FALSE; |
65f38f15 AM |
10537 | continue; |
10538 | } | |
10539 | break; | |
5bd4f169 AM |
10540 | } |
10541 | ||
239e1f3a AM |
10542 | /* Dynamic relocs are not propagated for SEC_DEBUGGING sections |
10543 | because such sections are not SEC_ALLOC and thus ld.so will | |
10544 | not process them. */ | |
65f38f15 | 10545 | if (unresolved_reloc |
239e1f3a | 10546 | && !((input_section->flags & SEC_DEBUGGING) != 0 |
f5385ebf | 10547 | && h->elf.def_dynamic)) |
9c07fe7c AM |
10548 | { |
10549 | (*_bfd_error_handler) | |
d003868e AM |
10550 | (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"), |
10551 | input_bfd, | |
10552 | input_section, | |
9c07fe7c | 10553 | (long) rel->r_offset, |
7b609f53 | 10554 | ppc64_elf_howto_table[(int) r_type]->name, |
039b3fef | 10555 | h->elf.root.root.string); |
b34976b6 | 10556 | ret = FALSE; |
9c07fe7c | 10557 | } |
5bd4f169 | 10558 | |
65f38f15 | 10559 | r = _bfd_final_link_relocate (ppc64_elf_howto_table[(int) r_type], |
5bd4f169 AM |
10560 | input_bfd, |
10561 | input_section, | |
10562 | contents, | |
411e1bfb | 10563 | rel->r_offset, |
5bd4f169 AM |
10564 | relocation, |
10565 | addend); | |
10566 | ||
ef60b7ff | 10567 | if (r != bfd_reloc_ok) |
5bd4f169 | 10568 | { |
cd27b276 AM |
10569 | if (sym_name == NULL) |
10570 | sym_name = "(null)"; | |
10571 | if (r == bfd_reloc_overflow) | |
5bd4f169 | 10572 | { |
cd27b276 AM |
10573 | if (warned) |
10574 | continue; | |
10575 | if (h != NULL | |
039b3fef | 10576 | && h->elf.root.type == bfd_link_hash_undefweak |
4ce794b7 | 10577 | && ppc64_elf_howto_table[r_type]->pc_relative) |
5bd4f169 AM |
10578 | { |
10579 | /* Assume this is a call protected by other code that | |
10580 | detects the symbol is undefined. If this is the case, | |
10581 | we can safely ignore the overflow. If not, the | |
10582 | program is hosed anyway, and a little warning isn't | |
10583 | going to help. */ | |
10584 | ||
10585 | continue; | |
10586 | } | |
10587 | ||
ef60b7ff | 10588 | if (!((*info->callbacks->reloc_overflow) |
dfeffb9f L |
10589 | (info, (h ? &h->elf.root : NULL), sym_name, |
10590 | ppc64_elf_howto_table[r_type]->name, | |
411e1bfb | 10591 | rel->r_addend, input_bfd, input_section, rel->r_offset))) |
b34976b6 | 10592 | return FALSE; |
ef60b7ff AM |
10593 | } |
10594 | else | |
10595 | { | |
10596 | (*_bfd_error_handler) | |
d003868e AM |
10597 | (_("%B(%A+0x%lx): %s reloc against `%s': error %d"), |
10598 | input_bfd, | |
10599 | input_section, | |
7b609f53 | 10600 | (long) rel->r_offset, |
4ce794b7 | 10601 | ppc64_elf_howto_table[r_type]->name, |
7b609f53 AM |
10602 | sym_name, |
10603 | (int) r); | |
b34976b6 | 10604 | ret = FALSE; |
ef60b7ff | 10605 | } |
5bd4f169 | 10606 | } |
5bd4f169 AM |
10607 | } |
10608 | ||
645ea6a9 AM |
10609 | /* If we're emitting relocations, then shortly after this function |
10610 | returns, reloc offsets and addends for this section will be | |
10611 | adjusted. Worse, reloc symbol indices will be for the output | |
8860955f AM |
10612 | file rather than the input. Save a copy of the relocs for |
10613 | opd_entry_value. */ | |
10614 | if (is_opd && info->emitrelocations) | |
10615 | { | |
10616 | bfd_size_type amt; | |
10617 | amt = input_section->reloc_count * sizeof (Elf_Internal_Rela); | |
10618 | rel = bfd_alloc (input_bfd, amt); | |
10619 | BFD_ASSERT (ppc64_elf_tdata (input_bfd)->opd_relocs == NULL); | |
10620 | ppc64_elf_tdata (input_bfd)->opd_relocs = rel; | |
10621 | if (rel == NULL) | |
10622 | return FALSE; | |
10623 | memcpy (rel, relocs, amt); | |
10624 | } | |
5bd4f169 AM |
10625 | return ret; |
10626 | } | |
10627 | ||
754021d0 AM |
10628 | /* Adjust the value of any local symbols in opd sections. */ |
10629 | ||
10630 | static bfd_boolean | |
10631 | ppc64_elf_output_symbol_hook (struct bfd_link_info *info, | |
10632 | const char *name ATTRIBUTE_UNUSED, | |
10633 | Elf_Internal_Sym *elfsym, | |
10634 | asection *input_sec, | |
10635 | struct elf_link_hash_entry *h) | |
10636 | { | |
4025353c | 10637 | long *opd_adjust, adjust; |
754021d0 AM |
10638 | bfd_vma value; |
10639 | ||
4025353c AM |
10640 | if (h != NULL) |
10641 | return TRUE; | |
10642 | ||
10643 | opd_adjust = get_opd_info (input_sec); | |
10644 | if (opd_adjust == NULL) | |
754021d0 AM |
10645 | return TRUE; |
10646 | ||
10647 | value = elfsym->st_value - input_sec->output_offset; | |
10648 | if (!info->relocatable) | |
10649 | value -= input_sec->output_section->vma; | |
10650 | ||
3f764659 | 10651 | adjust = opd_adjust[value / 8]; |
4025353c AM |
10652 | if (adjust == -1) |
10653 | elfsym->st_value = 0; | |
10654 | else | |
10655 | elfsym->st_value += adjust; | |
754021d0 AM |
10656 | return TRUE; |
10657 | } | |
10658 | ||
5bd4f169 AM |
10659 | /* Finish up dynamic symbol handling. We set the contents of various |
10660 | dynamic sections here. */ | |
10661 | ||
b34976b6 | 10662 | static bfd_boolean |
4ce794b7 AM |
10663 | ppc64_elf_finish_dynamic_symbol (bfd *output_bfd, |
10664 | struct bfd_link_info *info, | |
10665 | struct elf_link_hash_entry *h, | |
10666 | Elf_Internal_Sym *sym) | |
5bd4f169 | 10667 | { |
65f38f15 | 10668 | struct ppc_link_hash_table *htab; |
5bd4f169 | 10669 | bfd *dynobj; |
8387904d AM |
10670 | struct plt_entry *ent; |
10671 | Elf_Internal_Rela rela; | |
10672 | bfd_byte *loc; | |
5bd4f169 | 10673 | |
65f38f15 AM |
10674 | htab = ppc_hash_table (info); |
10675 | dynobj = htab->elf.dynobj; | |
5bd4f169 | 10676 | |
8387904d AM |
10677 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) |
10678 | if (ent->plt.offset != (bfd_vma) -1) | |
10679 | { | |
10680 | /* This symbol has an entry in the procedure linkage | |
10681 | table. Set it up. */ | |
10682 | ||
10683 | if (htab->plt == NULL | |
10684 | || htab->relplt == NULL | |
10685 | || htab->glink == NULL) | |
10686 | abort (); | |
10687 | ||
10688 | /* Create a JMP_SLOT reloc to inform the dynamic linker to | |
10689 | fill in the PLT entry. */ | |
10690 | rela.r_offset = (htab->plt->output_section->vma | |
10691 | + htab->plt->output_offset | |
10692 | + ent->plt.offset); | |
10693 | rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_JMP_SLOT); | |
10694 | rela.r_addend = ent->addend; | |
10695 | ||
10696 | loc = htab->relplt->contents; | |
10697 | loc += ((ent->plt.offset - PLT_INITIAL_ENTRY_SIZE) / PLT_ENTRY_SIZE | |
10698 | * sizeof (Elf64_External_Rela)); | |
10699 | bfd_elf64_swap_reloca_out (output_bfd, &rela, loc); | |
10700 | } | |
5bd4f169 | 10701 | |
f5385ebf | 10702 | if (h->needs_copy) |
5bd4f169 | 10703 | { |
5bd4f169 | 10704 | Elf_Internal_Rela rela; |
947216bf | 10705 | bfd_byte *loc; |
5bd4f169 | 10706 | |
65f38f15 | 10707 | /* This symbol needs a copy reloc. Set it up. */ |
5bd4f169 | 10708 | |
65f38f15 AM |
10709 | if (h->dynindx == -1 |
10710 | || (h->root.type != bfd_link_hash_defined | |
10711 | && h->root.type != bfd_link_hash_defweak) | |
4ce794b7 | 10712 | || htab->relbss == NULL) |
65f38f15 | 10713 | abort (); |
5bd4f169 AM |
10714 | |
10715 | rela.r_offset = (h->root.u.def.value | |
10716 | + h->root.u.def.section->output_section->vma | |
10717 | + h->root.u.def.section->output_offset); | |
10718 | rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_COPY); | |
10719 | rela.r_addend = 0; | |
4ce794b7 AM |
10720 | loc = htab->relbss->contents; |
10721 | loc += htab->relbss->reloc_count++ * sizeof (Elf64_External_Rela); | |
65f38f15 | 10722 | bfd_elf64_swap_reloca_out (output_bfd, &rela, loc); |
5bd4f169 AM |
10723 | } |
10724 | ||
5bd4f169 AM |
10725 | /* Mark some specially defined symbols as absolute. */ |
10726 | if (strcmp (h->root.root.string, "_DYNAMIC") == 0) | |
10727 | sym->st_shndx = SHN_ABS; | |
10728 | ||
b34976b6 | 10729 | return TRUE; |
5bd4f169 AM |
10730 | } |
10731 | ||
65f38f15 AM |
10732 | /* Used to decide how to sort relocs in an optimal manner for the |
10733 | dynamic linker, before writing them out. */ | |
10734 | ||
10735 | static enum elf_reloc_type_class | |
4ce794b7 | 10736 | ppc64_elf_reloc_type_class (const Elf_Internal_Rela *rela) |
65f38f15 | 10737 | { |
04c9666a | 10738 | enum elf_ppc64_reloc_type r_type; |
a33d1f77 | 10739 | |
4ce794b7 | 10740 | r_type = ELF64_R_TYPE (rela->r_info); |
a33d1f77 | 10741 | switch (r_type) |
65f38f15 AM |
10742 | { |
10743 | case R_PPC64_RELATIVE: | |
10744 | return reloc_class_relative; | |
10745 | case R_PPC64_JMP_SLOT: | |
10746 | return reloc_class_plt; | |
10747 | case R_PPC64_COPY: | |
10748 | return reloc_class_copy; | |
10749 | default: | |
10750 | return reloc_class_normal; | |
10751 | } | |
10752 | } | |
10753 | ||
5bd4f169 AM |
10754 | /* Finish up the dynamic sections. */ |
10755 | ||
b34976b6 | 10756 | static bfd_boolean |
4ce794b7 AM |
10757 | ppc64_elf_finish_dynamic_sections (bfd *output_bfd, |
10758 | struct bfd_link_info *info) | |
5bd4f169 | 10759 | { |
65f38f15 AM |
10760 | struct ppc_link_hash_table *htab; |
10761 | bfd *dynobj; | |
5bd4f169 | 10762 | asection *sdyn; |
5bd4f169 | 10763 | |
65f38f15 AM |
10764 | htab = ppc_hash_table (info); |
10765 | dynobj = htab->elf.dynobj; | |
5bd4f169 AM |
10766 | sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); |
10767 | ||
65f38f15 | 10768 | if (htab->elf.dynamic_sections_created) |
5bd4f169 | 10769 | { |
5bd4f169 AM |
10770 | Elf64_External_Dyn *dyncon, *dynconend; |
10771 | ||
4ce794b7 | 10772 | if (sdyn == NULL || htab->got == NULL) |
65f38f15 | 10773 | abort (); |
5bd4f169 AM |
10774 | |
10775 | dyncon = (Elf64_External_Dyn *) sdyn->contents; | |
eea6121a | 10776 | dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size); |
5bd4f169 AM |
10777 | for (; dyncon < dynconend; dyncon++) |
10778 | { | |
10779 | Elf_Internal_Dyn dyn; | |
19397422 | 10780 | asection *s; |
5bd4f169 AM |
10781 | |
10782 | bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn); | |
10783 | ||
10784 | switch (dyn.d_tag) | |
10785 | { | |
65f38f15 AM |
10786 | default: |
10787 | continue; | |
5bd4f169 | 10788 | |
5d1634d7 | 10789 | case DT_PPC64_GLINK: |
4ce794b7 | 10790 | s = htab->glink; |
6348e046 | 10791 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
ad8e1ba5 AM |
10792 | /* We stupidly defined DT_PPC64_GLINK to be the start |
10793 | of glink rather than the first entry point, which is | |
10794 | what ld.so needs, and now have a bigger stub to | |
10795 | support automatic multiple TOCs. */ | |
10796 | dyn.d_un.d_ptr += GLINK_CALL_STUB_SIZE - 32; | |
5d1634d7 AM |
10797 | break; |
10798 | ||
19397422 AM |
10799 | case DT_PPC64_OPD: |
10800 | s = bfd_get_section_by_name (output_bfd, ".opd"); | |
6348e046 AM |
10801 | if (s == NULL) |
10802 | continue; | |
10803 | dyn.d_un.d_ptr = s->vma; | |
19397422 AM |
10804 | break; |
10805 | ||
10806 | case DT_PPC64_OPDSZ: | |
10807 | s = bfd_get_section_by_name (output_bfd, ".opd"); | |
6348e046 AM |
10808 | if (s == NULL) |
10809 | continue; | |
eea6121a | 10810 | dyn.d_un.d_val = s->size; |
19397422 AM |
10811 | break; |
10812 | ||
65f38f15 | 10813 | case DT_PLTGOT: |
4ce794b7 | 10814 | s = htab->plt; |
6348e046 | 10815 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
65f38f15 AM |
10816 | break; |
10817 | ||
10818 | case DT_JMPREL: | |
4ce794b7 | 10819 | s = htab->relplt; |
6348e046 | 10820 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
65f38f15 | 10821 | break; |
5bd4f169 | 10822 | |
65f38f15 | 10823 | case DT_PLTRELSZ: |
eea6121a | 10824 | dyn.d_un.d_val = htab->relplt->size; |
5d1634d7 AM |
10825 | break; |
10826 | ||
10827 | case DT_RELASZ: | |
10828 | /* Don't count procedure linkage table relocs in the | |
10829 | overall reloc count. */ | |
4ce794b7 | 10830 | s = htab->relplt; |
6348e046 AM |
10831 | if (s == NULL) |
10832 | continue; | |
eea6121a | 10833 | dyn.d_un.d_val -= s->size; |
6348e046 AM |
10834 | break; |
10835 | ||
10836 | case DT_RELA: | |
10837 | /* We may not be using the standard ELF linker script. | |
10838 | If .rela.plt is the first .rela section, we adjust | |
10839 | DT_RELA to not include it. */ | |
4ce794b7 | 10840 | s = htab->relplt; |
6348e046 AM |
10841 | if (s == NULL) |
10842 | continue; | |
10843 | if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset) | |
10844 | continue; | |
eea6121a | 10845 | dyn.d_un.d_ptr += s->size; |
65f38f15 | 10846 | break; |
5bd4f169 | 10847 | } |
5bd4f169 | 10848 | |
65f38f15 | 10849 | bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon); |
5bd4f169 | 10850 | } |
5bd4f169 AM |
10851 | } |
10852 | ||
eea6121a | 10853 | if (htab->got != NULL && htab->got->size != 0) |
5d1634d7 AM |
10854 | { |
10855 | /* Fill in the first entry in the global offset table. | |
10856 | We use it to hold the link-time TOCbase. */ | |
10857 | bfd_put_64 (output_bfd, | |
60ee0d4a | 10858 | elf_gp (output_bfd) + TOC_BASE_OFF, |
4ce794b7 | 10859 | htab->got->contents); |
5d1634d7 AM |
10860 | |
10861 | /* Set .got entry size. */ | |
4ce794b7 | 10862 | elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 8; |
5d1634d7 AM |
10863 | } |
10864 | ||
eea6121a | 10865 | if (htab->plt != NULL && htab->plt->size != 0) |
5d1634d7 AM |
10866 | { |
10867 | /* Set .plt entry size. */ | |
4ce794b7 | 10868 | elf_section_data (htab->plt->output_section)->this_hdr.sh_entsize |
5d1634d7 AM |
10869 | = PLT_ENTRY_SIZE; |
10870 | } | |
10871 | ||
e717da7e | 10872 | /* We need to handle writing out multiple GOT sections ourselves, |
7b53ace3 AM |
10873 | since we didn't add them to DYNOBJ. We know dynobj is the first |
10874 | bfd. */ | |
e717da7e AM |
10875 | while ((dynobj = dynobj->link_next) != NULL) |
10876 | { | |
10877 | asection *s; | |
7b53ace3 | 10878 | |
ee75fd95 | 10879 | if (!is_ppc64_elf_target (dynobj->xvec)) |
7b53ace3 AM |
10880 | continue; |
10881 | ||
e717da7e AM |
10882 | s = ppc64_elf_tdata (dynobj)->got; |
10883 | if (s != NULL | |
eea6121a | 10884 | && s->size != 0 |
e717da7e AM |
10885 | && s->output_section != bfd_abs_section_ptr |
10886 | && !bfd_set_section_contents (output_bfd, s->output_section, | |
10887 | s->contents, s->output_offset, | |
eea6121a | 10888 | s->size)) |
e717da7e AM |
10889 | return FALSE; |
10890 | s = ppc64_elf_tdata (dynobj)->relgot; | |
10891 | if (s != NULL | |
eea6121a | 10892 | && s->size != 0 |
e717da7e AM |
10893 | && s->output_section != bfd_abs_section_ptr |
10894 | && !bfd_set_section_contents (output_bfd, s->output_section, | |
10895 | s->contents, s->output_offset, | |
eea6121a | 10896 | s->size)) |
e717da7e AM |
10897 | return FALSE; |
10898 | } | |
f6c52c13 | 10899 | |
b34976b6 | 10900 | return TRUE; |
5bd4f169 AM |
10901 | } |
10902 | ||
5bd4f169 | 10903 | #include "elf64-target.h" |