Commit | Line | Data |
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5bd4f169 | 1 | /* PowerPC64-specific support for 64-bit ELF. |
5d1634d7 | 2 | Copyright 1999, 2000, 2001, 2002 Free Software Foundation, Inc. |
5bd4f169 AM |
3 | Written by Linus Nordberg, Swox AB <info@swox.com>, |
4 | based on elf32-ppc.c by Ian Lance Taylor. | |
5 | ||
6 | This file is part of BFD, the Binary File Descriptor library. | |
7 | ||
8 | This program is free software; you can redistribute it and/or modify | |
9 | it under the terms of the GNU General Public License as published by | |
10 | the Free Software Foundation; either version 2 of the License, or | |
11 | (at your option) any later version. | |
12 | ||
13 | This program is distributed in the hope that it will be useful, | |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
19 | along with this program; if not, write to the Free Software | |
20 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ | |
21 | ||
22 | /* This file is based on the 64-bit PowerPC ELF ABI. It is also based | |
23 | on the file elf32-ppc.c. */ | |
24 | ||
25 | #include "bfd.h" | |
26 | #include "sysdep.h" | |
27 | #include "bfdlink.h" | |
28 | #include "libbfd.h" | |
29 | #include "elf-bfd.h" | |
30 | #include "elf/ppc.h" | |
5d1634d7 | 31 | #include "elf64-ppc.h" |
5bd4f169 AM |
32 | |
33 | #define USE_RELA /* we want RELA relocations, not REL. */ | |
34 | ||
35 | ||
36 | static void ppc_howto_init | |
37 | PARAMS ((void)); | |
38 | static reloc_howto_type *ppc64_elf_reloc_type_lookup | |
39 | PARAMS ((bfd *abfd, bfd_reloc_code_real_type code)); | |
40 | static void ppc64_elf_info_to_howto | |
41 | PARAMS ((bfd *abfd, arelent *cache_ptr, Elf64_Internal_Rela *dst)); | |
805fc799 AM |
42 | static bfd_reloc_status_type ppc64_elf_ha_reloc |
43 | PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); | |
44 | static bfd_reloc_status_type ppc64_elf_brtaken_reloc | |
45 | PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); | |
46 | static bfd_reloc_status_type ppc64_elf_sectoff_reloc | |
47 | PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); | |
48 | static bfd_reloc_status_type ppc64_elf_sectoff_ha_reloc | |
49 | PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); | |
50 | static bfd_reloc_status_type ppc64_elf_toc_reloc | |
51 | PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); | |
52 | static bfd_reloc_status_type ppc64_elf_toc_ha_reloc | |
53 | PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); | |
54 | static bfd_reloc_status_type ppc64_elf_toc64_reloc | |
55 | PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); | |
56 | static bfd_reloc_status_type ppc64_elf_unhandled_reloc | |
5bd4f169 | 57 | PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); |
7cdc5bba AM |
58 | static void ppc64_elf_get_symbol_info |
59 | PARAMS ((bfd *, asymbol *, symbol_info *)); | |
feee612b AM |
60 | static boolean ppc64_elf_object_p |
61 | PARAMS ((bfd *)); | |
5bd4f169 AM |
62 | static boolean ppc64_elf_set_private_flags |
63 | PARAMS ((bfd *, flagword)); | |
5bd4f169 AM |
64 | static boolean ppc64_elf_merge_private_bfd_data |
65 | PARAMS ((bfd *, bfd *)); | |
66 | static boolean ppc64_elf_section_from_shdr | |
90937f86 | 67 | PARAMS ((bfd *, Elf64_Internal_Shdr *, const char *)); |
5bd4f169 AM |
68 | |
69 | ||
5bd4f169 AM |
70 | /* The name of the dynamic interpreter. This is put in the .interp |
71 | section. */ | |
72 | #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1" | |
73 | ||
74 | /* The size in bytes of an entry in the procedure linkage table. */ | |
75 | #define PLT_ENTRY_SIZE 24 | |
76 | ||
77 | /* The initial size of the plt reserved for the dynamic linker. */ | |
5d1634d7 | 78 | #define PLT_INITIAL_ENTRY_SIZE PLT_ENTRY_SIZE |
5bd4f169 AM |
79 | |
80 | /* TOC base pointers offset from start of TOC. */ | |
81 | #define TOC_BASE_OFF (0x8000) | |
82 | ||
5d1634d7 AM |
83 | /* .plt call stub instructions. */ |
84 | #define ADDIS_R12_R2 0x3d820000 /* addis %r12,%r2,xxx@ha */ | |
85 | #define STD_R2_40R1 0xf8410028 /* std %r2,40(%r1) */ | |
86 | #define LD_R11_0R12 0xe96c0000 /* ld %r11,xxx+0@l(%r12) */ | |
87 | #define LD_R2_0R12 0xe84c0000 /* ld %r2,xxx+8@l(%r12) */ | |
88 | #define MTCTR_R11 0x7d6903a6 /* mtctr %r11 */ | |
89 | /* ld %r11,xxx+16@l(%r12) */ | |
90 | #define BCTR 0x4e800420 /* bctr */ | |
91 | ||
92 | /* The normal stub is this size. */ | |
93 | #define PLT_CALL_STUB_SIZE (7*4) | |
94 | ||
95 | /* But sometimes the .plt entry crosses a 64k boundary, and we need | |
96 | to adjust the high word with this insn. */ | |
97 | #define ADDIS_R12_R12_1 0x3d8c0001 /* addis %r12,%r12,1 */ | |
5bd4f169 | 98 | |
5d1634d7 AM |
99 | /* The .glink fixup call stub is the same as the .plt call stub, but |
100 | the first instruction restores r2, and the std is omitted. */ | |
101 | #define LD_R2_40R1 0xe8410028 /* ld %r2,40(%r1) */ | |
102 | ||
103 | /* Always allow this much space. */ | |
104 | #define GLINK_CALL_STUB_SIZE (8*4) | |
105 | ||
106 | /* Pad with this. */ | |
107 | #define NOP 0x60000000 | |
108 | ||
721956f4 AM |
109 | /* Some other nops. */ |
110 | #define CROR_151515 0x4def7b82 | |
111 | #define CROR_313131 0x4ffffb82 | |
112 | ||
cedb70c5 | 113 | /* .glink entries for the first 32k functions are two instructions. */ |
5d1634d7 AM |
114 | #define LI_R0_0 0x38000000 /* li %r0,0 */ |
115 | #define B_DOT 0x48000000 /* b . */ | |
116 | ||
117 | /* After that, we need two instructions to load the index, followed by | |
118 | a branch. */ | |
119 | #define LIS_R0_0 0x3c000000 /* lis %r0,0 */ | |
10ed1bba | 120 | #define ORI_R0_R0_0 0x60000000 /* ori %r0,%r0,0 */ |
41bd81ab | 121 | |
82bd7b59 AM |
122 | /* Instructions to save and restore floating point regs. */ |
123 | #define STFD_FR0_0R1 0xd8010000 /* stfd %fr0,0(%r1) */ | |
124 | #define LFD_FR0_0R1 0xc8010000 /* lfd %fr0,0(%r1) */ | |
125 | #define BLR 0x4e800020 /* blr */ | |
126 | ||
41bd81ab AM |
127 | /* Since .opd is an array of descriptors and each entry will end up |
128 | with identical R_PPC64_RELATIVE relocs, there is really no need to | |
129 | propagate .opd relocs; The dynamic linker should be taught to | |
1e2f5b6e | 130 | relocate .opd without reloc entries. */ |
41bd81ab AM |
131 | #ifndef NO_OPD_RELOCS |
132 | #define NO_OPD_RELOCS 0 | |
133 | #endif | |
5bd4f169 AM |
134 | \f |
135 | /* Relocation HOWTO's. */ | |
136 | static reloc_howto_type *ppc64_elf_howto_table[(int) R_PPC_max]; | |
137 | ||
138 | static reloc_howto_type ppc64_elf_howto_raw[] = { | |
139 | /* This reloc does nothing. */ | |
140 | HOWTO (R_PPC64_NONE, /* type */ | |
141 | 0, /* rightshift */ | |
142 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
143 | 32, /* bitsize */ | |
144 | false, /* pc_relative */ | |
145 | 0, /* bitpos */ | |
146 | complain_overflow_bitfield, /* complain_on_overflow */ | |
147 | bfd_elf_generic_reloc, /* special_function */ | |
148 | "R_PPC64_NONE", /* name */ | |
149 | false, /* partial_inplace */ | |
150 | 0, /* src_mask */ | |
151 | 0, /* dst_mask */ | |
152 | false), /* pcrel_offset */ | |
153 | ||
154 | /* A standard 32 bit relocation. */ | |
155 | HOWTO (R_PPC64_ADDR32, /* type */ | |
156 | 0, /* rightshift */ | |
157 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
158 | 32, /* bitsize */ | |
159 | false, /* pc_relative */ | |
160 | 0, /* bitpos */ | |
161 | complain_overflow_bitfield, /* complain_on_overflow */ | |
162 | bfd_elf_generic_reloc, /* special_function */ | |
163 | "R_PPC64_ADDR32", /* name */ | |
164 | false, /* partial_inplace */ | |
165 | 0, /* src_mask */ | |
166 | 0xffffffff, /* dst_mask */ | |
167 | false), /* pcrel_offset */ | |
168 | ||
169 | /* An absolute 26 bit branch; the lower two bits must be zero. | |
170 | FIXME: we don't check that, we just clear them. */ | |
171 | HOWTO (R_PPC64_ADDR24, /* type */ | |
172 | 0, /* rightshift */ | |
173 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
174 | 26, /* bitsize */ | |
175 | false, /* pc_relative */ | |
176 | 0, /* bitpos */ | |
177 | complain_overflow_bitfield, /* complain_on_overflow */ | |
178 | bfd_elf_generic_reloc, /* special_function */ | |
179 | "R_PPC64_ADDR24", /* name */ | |
180 | false, /* partial_inplace */ | |
181 | 0, /* src_mask */ | |
182 | 0x3fffffc, /* dst_mask */ | |
183 | false), /* pcrel_offset */ | |
184 | ||
185 | /* A standard 16 bit relocation. */ | |
186 | HOWTO (R_PPC64_ADDR16, /* type */ | |
187 | 0, /* rightshift */ | |
188 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
189 | 16, /* bitsize */ | |
190 | false, /* pc_relative */ | |
191 | 0, /* bitpos */ | |
192 | complain_overflow_bitfield, /* complain_on_overflow */ | |
193 | bfd_elf_generic_reloc, /* special_function */ | |
194 | "R_PPC64_ADDR16", /* name */ | |
195 | false, /* partial_inplace */ | |
196 | 0, /* src_mask */ | |
197 | 0xffff, /* dst_mask */ | |
198 | false), /* pcrel_offset */ | |
199 | ||
200 | /* A 16 bit relocation without overflow. */ | |
201 | HOWTO (R_PPC64_ADDR16_LO, /* type */ | |
202 | 0, /* rightshift */ | |
203 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
204 | 16, /* bitsize */ | |
205 | false, /* pc_relative */ | |
206 | 0, /* bitpos */ | |
207 | complain_overflow_dont,/* complain_on_overflow */ | |
208 | bfd_elf_generic_reloc, /* special_function */ | |
209 | "R_PPC64_ADDR16_LO", /* name */ | |
210 | false, /* partial_inplace */ | |
211 | 0, /* src_mask */ | |
212 | 0xffff, /* dst_mask */ | |
213 | false), /* pcrel_offset */ | |
214 | ||
215 | /* Bits 16-31 of an address. */ | |
216 | HOWTO (R_PPC64_ADDR16_HI, /* type */ | |
217 | 16, /* rightshift */ | |
218 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
219 | 16, /* bitsize */ | |
220 | false, /* pc_relative */ | |
221 | 0, /* bitpos */ | |
222 | complain_overflow_dont, /* complain_on_overflow */ | |
223 | bfd_elf_generic_reloc, /* special_function */ | |
224 | "R_PPC64_ADDR16_HI", /* name */ | |
225 | false, /* partial_inplace */ | |
226 | 0, /* src_mask */ | |
227 | 0xffff, /* dst_mask */ | |
228 | false), /* pcrel_offset */ | |
229 | ||
230 | /* Bits 16-31 of an address, plus 1 if the contents of the low 16 | |
231 | bits, treated as a signed number, is negative. */ | |
232 | HOWTO (R_PPC64_ADDR16_HA, /* type */ | |
233 | 16, /* rightshift */ | |
234 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
235 | 16, /* bitsize */ | |
236 | false, /* pc_relative */ | |
237 | 0, /* bitpos */ | |
238 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 239 | ppc64_elf_ha_reloc, /* special_function */ |
5bd4f169 AM |
240 | "R_PPC64_ADDR16_HA", /* name */ |
241 | false, /* partial_inplace */ | |
242 | 0, /* src_mask */ | |
243 | 0xffff, /* dst_mask */ | |
244 | false), /* pcrel_offset */ | |
245 | ||
246 | /* An absolute 16 bit branch; the lower two bits must be zero. | |
247 | FIXME: we don't check that, we just clear them. */ | |
248 | HOWTO (R_PPC64_ADDR14, /* type */ | |
249 | 0, /* rightshift */ | |
250 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
251 | 16, /* bitsize */ | |
252 | false, /* pc_relative */ | |
253 | 0, /* bitpos */ | |
254 | complain_overflow_bitfield, /* complain_on_overflow */ | |
255 | bfd_elf_generic_reloc, /* special_function */ | |
256 | "R_PPC64_ADDR14", /* name */ | |
257 | false, /* partial_inplace */ | |
258 | 0, /* src_mask */ | |
259 | 0xfffc, /* dst_mask */ | |
260 | false), /* pcrel_offset */ | |
261 | ||
262 | /* An absolute 16 bit branch, for which bit 10 should be set to | |
263 | indicate that the branch is expected to be taken. The lower two | |
264 | bits must be zero. */ | |
265 | HOWTO (R_PPC64_ADDR14_BRTAKEN, /* type */ | |
266 | 0, /* rightshift */ | |
267 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
268 | 16, /* bitsize */ | |
269 | false, /* pc_relative */ | |
270 | 0, /* bitpos */ | |
271 | complain_overflow_bitfield, /* complain_on_overflow */ | |
805fc799 | 272 | ppc64_elf_brtaken_reloc, /* special_function */ |
5bd4f169 AM |
273 | "R_PPC64_ADDR14_BRTAKEN",/* name */ |
274 | false, /* partial_inplace */ | |
275 | 0, /* src_mask */ | |
276 | 0xfffc, /* dst_mask */ | |
277 | false), /* pcrel_offset */ | |
278 | ||
279 | /* An absolute 16 bit branch, for which bit 10 should be set to | |
280 | indicate that the branch is not expected to be taken. The lower | |
281 | two bits must be zero. */ | |
282 | HOWTO (R_PPC64_ADDR14_BRNTAKEN, /* type */ | |
283 | 0, /* rightshift */ | |
284 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
285 | 16, /* bitsize */ | |
286 | false, /* pc_relative */ | |
287 | 0, /* bitpos */ | |
288 | complain_overflow_bitfield, /* complain_on_overflow */ | |
805fc799 | 289 | ppc64_elf_brtaken_reloc, /* special_function */ |
5bd4f169 AM |
290 | "R_PPC64_ADDR14_BRNTAKEN",/* name */ |
291 | false, /* partial_inplace */ | |
292 | 0, /* src_mask */ | |
293 | 0xfffc, /* dst_mask */ | |
294 | false), /* pcrel_offset */ | |
295 | ||
296 | /* A relative 26 bit branch; the lower two bits must be zero. */ | |
297 | HOWTO (R_PPC64_REL24, /* type */ | |
298 | 0, /* rightshift */ | |
299 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
300 | 26, /* bitsize */ | |
301 | true, /* pc_relative */ | |
302 | 0, /* bitpos */ | |
303 | complain_overflow_signed, /* complain_on_overflow */ | |
304 | bfd_elf_generic_reloc, /* special_function */ | |
305 | "R_PPC64_REL24", /* name */ | |
306 | false, /* partial_inplace */ | |
307 | 0, /* src_mask */ | |
308 | 0x3fffffc, /* dst_mask */ | |
309 | true), /* pcrel_offset */ | |
310 | ||
311 | /* A relative 16 bit branch; the lower two bits must be zero. */ | |
312 | HOWTO (R_PPC64_REL14, /* type */ | |
313 | 0, /* rightshift */ | |
314 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
315 | 16, /* bitsize */ | |
316 | true, /* pc_relative */ | |
317 | 0, /* bitpos */ | |
318 | complain_overflow_signed, /* complain_on_overflow */ | |
319 | bfd_elf_generic_reloc, /* special_function */ | |
320 | "R_PPC64_REL14", /* name */ | |
321 | false, /* partial_inplace */ | |
322 | 0, /* src_mask */ | |
323 | 0xfffc, /* dst_mask */ | |
324 | true), /* pcrel_offset */ | |
325 | ||
326 | /* A relative 16 bit branch. Bit 10 should be set to indicate that | |
327 | the branch is expected to be taken. The lower two bits must be | |
328 | zero. */ | |
329 | HOWTO (R_PPC64_REL14_BRTAKEN, /* type */ | |
330 | 0, /* rightshift */ | |
331 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
332 | 16, /* bitsize */ | |
333 | true, /* pc_relative */ | |
334 | 0, /* bitpos */ | |
335 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 336 | ppc64_elf_brtaken_reloc, /* special_function */ |
5bd4f169 AM |
337 | "R_PPC64_REL14_BRTAKEN", /* name */ |
338 | false, /* partial_inplace */ | |
339 | 0, /* src_mask */ | |
340 | 0xfffc, /* dst_mask */ | |
341 | true), /* pcrel_offset */ | |
342 | ||
343 | /* A relative 16 bit branch. Bit 10 should be set to indicate that | |
344 | the branch is not expected to be taken. The lower two bits must | |
345 | be zero. */ | |
346 | HOWTO (R_PPC64_REL14_BRNTAKEN, /* type */ | |
347 | 0, /* rightshift */ | |
348 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
349 | 16, /* bitsize */ | |
350 | true, /* pc_relative */ | |
351 | 0, /* bitpos */ | |
352 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 353 | ppc64_elf_brtaken_reloc, /* special_function */ |
5bd4f169 AM |
354 | "R_PPC64_REL14_BRNTAKEN",/* name */ |
355 | false, /* partial_inplace */ | |
356 | 0, /* src_mask */ | |
357 | 0xfffc, /* dst_mask */ | |
358 | true), /* pcrel_offset */ | |
359 | ||
360 | /* Like R_PPC64_ADDR16, but referring to the GOT table entry for the | |
361 | symbol. */ | |
362 | HOWTO (R_PPC64_GOT16, /* type */ | |
363 | 0, /* rightshift */ | |
364 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
365 | 16, /* bitsize */ | |
366 | false, /* pc_relative */ | |
367 | 0, /* bitpos */ | |
368 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 369 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 AM |
370 | "R_PPC64_GOT16", /* name */ |
371 | false, /* partial_inplace */ | |
372 | 0, /* src_mask */ | |
373 | 0xffff, /* dst_mask */ | |
374 | false), /* pcrel_offset */ | |
375 | ||
376 | /* Like R_PPC64_ADDR16_LO, but referring to the GOT table entry for | |
377 | the symbol. */ | |
378 | HOWTO (R_PPC64_GOT16_LO, /* type */ | |
379 | 0, /* rightshift */ | |
380 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
381 | 16, /* bitsize */ | |
382 | false, /* pc_relative */ | |
383 | 0, /* bitpos */ | |
384 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 385 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 AM |
386 | "R_PPC64_GOT16_LO", /* name */ |
387 | false, /* partial_inplace */ | |
388 | 0, /* src_mask */ | |
389 | 0xffff, /* dst_mask */ | |
390 | false), /* pcrel_offset */ | |
391 | ||
392 | /* Like R_PPC64_ADDR16_HI, but referring to the GOT table entry for | |
393 | the symbol. */ | |
394 | HOWTO (R_PPC64_GOT16_HI, /* type */ | |
395 | 16, /* rightshift */ | |
396 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
397 | 16, /* bitsize */ | |
398 | false, /* pc_relative */ | |
399 | 0, /* bitpos */ | |
400 | complain_overflow_dont,/* complain_on_overflow */ | |
805fc799 | 401 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 AM |
402 | "R_PPC64_GOT16_HI", /* name */ |
403 | false, /* partial_inplace */ | |
404 | 0, /* src_mask */ | |
405 | 0xffff, /* dst_mask */ | |
406 | false), /* pcrel_offset */ | |
407 | ||
408 | /* Like R_PPC64_ADDR16_HA, but referring to the GOT table entry for | |
409 | the symbol. */ | |
410 | HOWTO (R_PPC64_GOT16_HA, /* type */ | |
411 | 16, /* rightshift */ | |
412 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
413 | 16, /* bitsize */ | |
414 | false, /* pc_relative */ | |
415 | 0, /* bitpos */ | |
416 | complain_overflow_dont,/* complain_on_overflow */ | |
805fc799 | 417 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 AM |
418 | "R_PPC64_GOT16_HA", /* name */ |
419 | false, /* partial_inplace */ | |
420 | 0, /* src_mask */ | |
421 | 0xffff, /* dst_mask */ | |
422 | false), /* pcrel_offset */ | |
423 | ||
424 | /* This is used only by the dynamic linker. The symbol should exist | |
425 | both in the object being run and in some shared library. The | |
426 | dynamic linker copies the data addressed by the symbol from the | |
427 | shared library into the object, because the object being | |
428 | run has to have the data at some particular address. */ | |
429 | HOWTO (R_PPC64_COPY, /* type */ | |
430 | 0, /* rightshift */ | |
431 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
432 | 32, /* bitsize */ | |
433 | false, /* pc_relative */ | |
434 | 0, /* bitpos */ | |
435 | complain_overflow_bitfield, /* complain_on_overflow */ | |
805fc799 | 436 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 AM |
437 | "R_PPC64_COPY", /* name */ |
438 | false, /* partial_inplace */ | |
439 | 0, /* src_mask */ | |
440 | 0, /* dst_mask */ | |
441 | false), /* pcrel_offset */ | |
442 | ||
443 | /* Like R_PPC64_ADDR64, but used when setting global offset table | |
444 | entries. */ | |
445 | HOWTO (R_PPC64_GLOB_DAT, /* type */ | |
446 | 0, /* rightshift */ | |
447 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
448 | 64, /* bitsize */ | |
449 | false, /* pc_relative */ | |
450 | 0, /* bitpos */ | |
451 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 452 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 AM |
453 | "R_PPC64_GLOB_DAT", /* name */ |
454 | false, /* partial_inplace */ | |
455 | 0, /* src_mask */ | |
456 | 0xffffffffffffffff, /* dst_mask */ | |
457 | false), /* pcrel_offset */ | |
458 | ||
459 | /* Created by the link editor. Marks a procedure linkage table | |
460 | entry for a symbol. */ | |
461 | HOWTO (R_PPC64_JMP_SLOT, /* type */ | |
462 | 0, /* rightshift */ | |
463 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
464 | 0, /* bitsize */ | |
465 | false, /* pc_relative */ | |
466 | 0, /* bitpos */ | |
467 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 468 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 AM |
469 | "R_PPC64_JMP_SLOT", /* name */ |
470 | false, /* partial_inplace */ | |
471 | 0, /* src_mask */ | |
472 | 0, /* dst_mask */ | |
473 | false), /* pcrel_offset */ | |
474 | ||
475 | /* Used only by the dynamic linker. When the object is run, this | |
476 | doubleword64 is set to the load address of the object, plus the | |
477 | addend. */ | |
478 | HOWTO (R_PPC64_RELATIVE, /* type */ | |
479 | 0, /* rightshift */ | |
480 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
481 | 64, /* bitsize */ | |
8fc39d5d | 482 | false, /* pc_relative */ |
5bd4f169 AM |
483 | 0, /* bitpos */ |
484 | complain_overflow_dont, /* complain_on_overflow */ | |
485 | bfd_elf_generic_reloc, /* special_function */ | |
486 | "R_PPC64_RELATIVE", /* name */ | |
487 | false, /* partial_inplace */ | |
488 | 0, /* src_mask */ | |
489 | 0xffffffffffffffff, /* dst_mask */ | |
8fc39d5d | 490 | false), /* pcrel_offset */ |
5bd4f169 AM |
491 | |
492 | /* Like R_PPC64_ADDR32, but may be unaligned. */ | |
493 | HOWTO (R_PPC64_UADDR32, /* type */ | |
494 | 0, /* rightshift */ | |
495 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
496 | 32, /* bitsize */ | |
497 | false, /* pc_relative */ | |
498 | 0, /* bitpos */ | |
499 | complain_overflow_bitfield, /* complain_on_overflow */ | |
500 | bfd_elf_generic_reloc, /* special_function */ | |
501 | "R_PPC64_UADDR32", /* name */ | |
502 | false, /* partial_inplace */ | |
503 | 0, /* src_mask */ | |
504 | 0xffffffff, /* dst_mask */ | |
505 | false), /* pcrel_offset */ | |
506 | ||
507 | /* Like R_PPC64_ADDR16, but may be unaligned. */ | |
508 | HOWTO (R_PPC64_UADDR16, /* type */ | |
509 | 0, /* rightshift */ | |
510 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
511 | 16, /* bitsize */ | |
512 | false, /* pc_relative */ | |
513 | 0, /* bitpos */ | |
514 | complain_overflow_bitfield, /* complain_on_overflow */ | |
515 | bfd_elf_generic_reloc, /* special_function */ | |
516 | "R_PPC64_UADDR16", /* name */ | |
517 | false, /* partial_inplace */ | |
518 | 0, /* src_mask */ | |
519 | 0xffff, /* dst_mask */ | |
520 | false), /* pcrel_offset */ | |
521 | ||
522 | /* 32-bit PC relative. */ | |
523 | HOWTO (R_PPC64_REL32, /* type */ | |
524 | 0, /* rightshift */ | |
525 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
526 | 32, /* bitsize */ | |
527 | true, /* pc_relative */ | |
528 | 0, /* bitpos */ | |
cedb70c5 | 529 | /* FIXME: Verify. Was complain_overflow_bitfield. */ |
5bd4f169 AM |
530 | complain_overflow_signed, /* complain_on_overflow */ |
531 | bfd_elf_generic_reloc, /* special_function */ | |
532 | "R_PPC64_REL32", /* name */ | |
533 | false, /* partial_inplace */ | |
534 | 0, /* src_mask */ | |
535 | 0xffffffff, /* dst_mask */ | |
536 | true), /* pcrel_offset */ | |
537 | ||
10ed1bba | 538 | /* 32-bit relocation to the symbol's procedure linkage table. */ |
5bd4f169 AM |
539 | HOWTO (R_PPC64_PLT32, /* type */ |
540 | 0, /* rightshift */ | |
541 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
542 | 32, /* bitsize */ | |
543 | false, /* pc_relative */ | |
544 | 0, /* bitpos */ | |
545 | complain_overflow_bitfield, /* complain_on_overflow */ | |
805fc799 | 546 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 AM |
547 | "R_PPC64_PLT32", /* name */ |
548 | false, /* partial_inplace */ | |
549 | 0, /* src_mask */ | |
550 | 0, /* dst_mask */ | |
551 | false), /* pcrel_offset */ | |
552 | ||
553 | /* 32-bit PC relative relocation to the symbol's procedure linkage table. | |
554 | FIXME: R_PPC64_PLTREL32 not supported. */ | |
555 | HOWTO (R_PPC64_PLTREL32, /* type */ | |
556 | 0, /* rightshift */ | |
557 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
558 | 32, /* bitsize */ | |
559 | true, /* pc_relative */ | |
560 | 0, /* bitpos */ | |
561 | complain_overflow_signed, /* complain_on_overflow */ | |
562 | bfd_elf_generic_reloc, /* special_function */ | |
563 | "R_PPC64_PLTREL32", /* name */ | |
564 | false, /* partial_inplace */ | |
565 | 0, /* src_mask */ | |
566 | 0, /* dst_mask */ | |
567 | true), /* pcrel_offset */ | |
568 | ||
569 | /* Like R_PPC64_ADDR16_LO, but referring to the PLT table entry for | |
570 | the symbol. */ | |
571 | HOWTO (R_PPC64_PLT16_LO, /* type */ | |
572 | 0, /* rightshift */ | |
573 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
574 | 16, /* bitsize */ | |
575 | false, /* pc_relative */ | |
576 | 0, /* bitpos */ | |
577 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 578 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 AM |
579 | "R_PPC64_PLT16_LO", /* name */ |
580 | false, /* partial_inplace */ | |
581 | 0, /* src_mask */ | |
582 | 0xffff, /* dst_mask */ | |
583 | false), /* pcrel_offset */ | |
584 | ||
585 | /* Like R_PPC64_ADDR16_HI, but referring to the PLT table entry for | |
586 | the symbol. */ | |
587 | HOWTO (R_PPC64_PLT16_HI, /* type */ | |
588 | 16, /* rightshift */ | |
589 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
590 | 16, /* bitsize */ | |
591 | false, /* pc_relative */ | |
592 | 0, /* bitpos */ | |
593 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 594 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 AM |
595 | "R_PPC64_PLT16_HI", /* name */ |
596 | false, /* partial_inplace */ | |
597 | 0, /* src_mask */ | |
598 | 0xffff, /* dst_mask */ | |
599 | false), /* pcrel_offset */ | |
600 | ||
601 | /* Like R_PPC64_ADDR16_HA, but referring to the PLT table entry for | |
602 | the symbol. */ | |
603 | HOWTO (R_PPC64_PLT16_HA, /* type */ | |
604 | 16, /* rightshift */ | |
605 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
606 | 16, /* bitsize */ | |
607 | false, /* pc_relative */ | |
608 | 0, /* bitpos */ | |
609 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 610 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 AM |
611 | "R_PPC64_PLT16_HA", /* name */ |
612 | false, /* partial_inplace */ | |
613 | 0, /* src_mask */ | |
614 | 0xffff, /* dst_mask */ | |
615 | false), /* pcrel_offset */ | |
616 | ||
c061c2d8 | 617 | /* 16-bit section relative relocation. */ |
5bd4f169 AM |
618 | HOWTO (R_PPC64_SECTOFF, /* type */ |
619 | 0, /* rightshift */ | |
c061c2d8 AM |
620 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
621 | 16, /* bitsize */ | |
805fc799 | 622 | false, /* pc_relative */ |
5bd4f169 AM |
623 | 0, /* bitpos */ |
624 | complain_overflow_bitfield, /* complain_on_overflow */ | |
805fc799 | 625 | ppc64_elf_sectoff_reloc, /* special_function */ |
5bd4f169 AM |
626 | "R_PPC64_SECTOFF", /* name */ |
627 | false, /* partial_inplace */ | |
628 | 0, /* src_mask */ | |
c061c2d8 | 629 | 0xffff, /* dst_mask */ |
805fc799 | 630 | false), /* pcrel_offset */ |
5bd4f169 | 631 | |
c061c2d8 | 632 | /* Like R_PPC64_SECTOFF, but no overflow warning. */ |
5bd4f169 AM |
633 | HOWTO (R_PPC64_SECTOFF_LO, /* type */ |
634 | 0, /* rightshift */ | |
635 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
636 | 16, /* bitsize */ | |
637 | false, /* pc_relative */ | |
638 | 0, /* bitpos */ | |
639 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 640 | ppc64_elf_sectoff_reloc, /* special_function */ |
5bd4f169 AM |
641 | "R_PPC64_SECTOFF_LO", /* name */ |
642 | false, /* partial_inplace */ | |
643 | 0, /* src_mask */ | |
644 | 0xffff, /* dst_mask */ | |
645 | false), /* pcrel_offset */ | |
646 | ||
647 | /* 16-bit upper half section relative relocation. */ | |
648 | HOWTO (R_PPC64_SECTOFF_HI, /* type */ | |
649 | 16, /* rightshift */ | |
650 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
651 | 16, /* bitsize */ | |
652 | false, /* pc_relative */ | |
653 | 0, /* bitpos */ | |
654 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 655 | ppc64_elf_sectoff_reloc, /* special_function */ |
5bd4f169 AM |
656 | "R_PPC64_SECTOFF_HI", /* name */ |
657 | false, /* partial_inplace */ | |
658 | 0, /* src_mask */ | |
659 | 0xffff, /* dst_mask */ | |
660 | false), /* pcrel_offset */ | |
661 | ||
662 | /* 16-bit upper half adjusted section relative relocation. */ | |
663 | HOWTO (R_PPC64_SECTOFF_HA, /* type */ | |
664 | 16, /* rightshift */ | |
665 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
666 | 16, /* bitsize */ | |
667 | false, /* pc_relative */ | |
668 | 0, /* bitpos */ | |
669 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 670 | ppc64_elf_sectoff_ha_reloc, /* special_function */ |
5bd4f169 AM |
671 | "R_PPC64_SECTOFF_HA", /* name */ |
672 | false, /* partial_inplace */ | |
673 | 0, /* src_mask */ | |
674 | 0xffff, /* dst_mask */ | |
675 | false), /* pcrel_offset */ | |
676 | ||
677 | /* Like R_PPC64_REL24 without touching the two least significant | |
805fc799 | 678 | bits. Should have been named R_PPC64_REL30! */ |
5bd4f169 AM |
679 | HOWTO (R_PPC64_ADDR30, /* type */ |
680 | 2, /* rightshift */ | |
681 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
682 | 30, /* bitsize */ | |
683 | true, /* pc_relative */ | |
684 | 0, /* bitpos */ | |
685 | complain_overflow_dont, /* complain_on_overflow */ | |
686 | bfd_elf_generic_reloc, /* special_function */ | |
687 | "R_PPC64_ADDR30", /* name */ | |
688 | false, /* partial_inplace */ | |
689 | 0, /* src_mask */ | |
690 | 0xfffffffc, /* dst_mask */ | |
691 | true), /* pcrel_offset */ | |
692 | ||
693 | /* Relocs in the 64-bit PowerPC ELF ABI, not in the 32-bit ABI. */ | |
694 | ||
695 | /* A standard 64-bit relocation. */ | |
696 | HOWTO (R_PPC64_ADDR64, /* type */ | |
697 | 0, /* rightshift */ | |
698 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
699 | 64, /* bitsize */ | |
700 | false, /* pc_relative */ | |
701 | 0, /* bitpos */ | |
702 | complain_overflow_dont, /* complain_on_overflow */ | |
703 | bfd_elf_generic_reloc, /* special_function */ | |
704 | "R_PPC64_ADDR64", /* name */ | |
705 | false, /* partial_inplace */ | |
706 | 0, /* src_mask */ | |
707 | 0xffffffffffffffff, /* dst_mask */ | |
708 | false), /* pcrel_offset */ | |
709 | ||
710 | /* The bits 32-47 of an address. */ | |
711 | HOWTO (R_PPC64_ADDR16_HIGHER, /* type */ | |
712 | 32, /* rightshift */ | |
713 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
714 | 16, /* bitsize */ | |
715 | false, /* pc_relative */ | |
716 | 0, /* bitpos */ | |
717 | complain_overflow_dont, /* complain_on_overflow */ | |
718 | bfd_elf_generic_reloc, /* special_function */ | |
719 | "R_PPC64_ADDR16_HIGHER", /* name */ | |
720 | false, /* partial_inplace */ | |
721 | 0, /* src_mask */ | |
722 | 0xffff, /* dst_mask */ | |
723 | false), /* pcrel_offset */ | |
724 | ||
725 | /* The bits 32-47 of an address, plus 1 if the contents of the low | |
726 | 16 bits, treated as a signed number, is negative. */ | |
727 | HOWTO (R_PPC64_ADDR16_HIGHERA, /* type */ | |
728 | 32, /* rightshift */ | |
729 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
730 | 16, /* bitsize */ | |
731 | false, /* pc_relative */ | |
732 | 0, /* bitpos */ | |
733 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 734 | ppc64_elf_ha_reloc, /* special_function */ |
5bd4f169 AM |
735 | "R_PPC64_ADDR16_HIGHERA", /* name */ |
736 | false, /* partial_inplace */ | |
737 | 0, /* src_mask */ | |
738 | 0xffff, /* dst_mask */ | |
739 | false), /* pcrel_offset */ | |
740 | ||
741 | /* The bits 48-63 of an address. */ | |
742 | HOWTO (R_PPC64_ADDR16_HIGHEST,/* type */ | |
743 | 48, /* rightshift */ | |
744 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
745 | 16, /* bitsize */ | |
746 | false, /* pc_relative */ | |
747 | 0, /* bitpos */ | |
748 | complain_overflow_dont, /* complain_on_overflow */ | |
749 | bfd_elf_generic_reloc, /* special_function */ | |
750 | "R_PPC64_ADDR16_HIGHEST", /* name */ | |
751 | false, /* partial_inplace */ | |
752 | 0, /* src_mask */ | |
753 | 0xffff, /* dst_mask */ | |
754 | false), /* pcrel_offset */ | |
755 | ||
756 | /* The bits 48-63 of an address, plus 1 if the contents of the low | |
757 | 16 bits, treated as a signed number, is negative. */ | |
758 | HOWTO (R_PPC64_ADDR16_HIGHESTA,/* type */ | |
759 | 48, /* rightshift */ | |
760 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
761 | 16, /* bitsize */ | |
762 | false, /* pc_relative */ | |
763 | 0, /* bitpos */ | |
764 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 765 | ppc64_elf_ha_reloc, /* special_function */ |
5bd4f169 AM |
766 | "R_PPC64_ADDR16_HIGHESTA", /* name */ |
767 | false, /* partial_inplace */ | |
768 | 0, /* src_mask */ | |
769 | 0xffff, /* dst_mask */ | |
770 | false), /* pcrel_offset */ | |
771 | ||
772 | /* Like ADDR64, but may be unaligned. */ | |
773 | HOWTO (R_PPC64_UADDR64, /* type */ | |
774 | 0, /* rightshift */ | |
775 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
776 | 64, /* bitsize */ | |
777 | false, /* pc_relative */ | |
778 | 0, /* bitpos */ | |
779 | complain_overflow_dont, /* complain_on_overflow */ | |
780 | bfd_elf_generic_reloc, /* special_function */ | |
781 | "R_PPC64_UADDR64", /* name */ | |
782 | false, /* partial_inplace */ | |
783 | 0, /* src_mask */ | |
784 | 0xffffffffffffffff, /* dst_mask */ | |
785 | false), /* pcrel_offset */ | |
786 | ||
787 | /* 64-bit relative relocation. */ | |
788 | HOWTO (R_PPC64_REL64, /* type */ | |
789 | 0, /* rightshift */ | |
790 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
791 | 64, /* bitsize */ | |
792 | true, /* pc_relative */ | |
793 | 0, /* bitpos */ | |
794 | complain_overflow_dont, /* complain_on_overflow */ | |
795 | bfd_elf_generic_reloc, /* special_function */ | |
796 | "R_PPC64_REL64", /* name */ | |
797 | false, /* partial_inplace */ | |
798 | 0, /* src_mask */ | |
799 | 0xffffffffffffffff, /* dst_mask */ | |
800 | true), /* pcrel_offset */ | |
801 | ||
cedb70c5 | 802 | /* 64-bit relocation to the symbol's procedure linkage table. */ |
5bd4f169 AM |
803 | HOWTO (R_PPC64_PLT64, /* type */ |
804 | 0, /* rightshift */ | |
805 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
806 | 64, /* bitsize */ | |
807 | false, /* pc_relative */ | |
808 | 0, /* bitpos */ | |
809 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 810 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 AM |
811 | "R_PPC64_PLT64", /* name */ |
812 | false, /* partial_inplace */ | |
813 | 0, /* src_mask */ | |
814 | 0, /* dst_mask */ | |
815 | false), /* pcrel_offset */ | |
816 | ||
817 | /* 64-bit PC relative relocation to the symbol's procedure linkage | |
818 | table. */ | |
819 | /* FIXME: R_PPC64_PLTREL64 not supported. */ | |
820 | HOWTO (R_PPC64_PLTREL64, /* type */ | |
821 | 0, /* rightshift */ | |
822 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
823 | 64, /* bitsize */ | |
824 | true, /* pc_relative */ | |
825 | 0, /* bitpos */ | |
826 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 827 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 AM |
828 | "R_PPC64_PLTREL64", /* name */ |
829 | false, /* partial_inplace */ | |
830 | 0, /* src_mask */ | |
831 | 0, /* dst_mask */ | |
832 | true), /* pcrel_offset */ | |
833 | ||
834 | /* 16 bit TOC-relative relocation. */ | |
835 | ||
836 | /* R_PPC64_TOC16 47 half16* S + A - .TOC. */ | |
837 | HOWTO (R_PPC64_TOC16, /* type */ | |
838 | 0, /* rightshift */ | |
839 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
840 | 16, /* bitsize */ | |
841 | false, /* pc_relative */ | |
842 | 0, /* bitpos */ | |
843 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 844 | ppc64_elf_toc_reloc, /* special_function */ |
5bd4f169 AM |
845 | "R_PPC64_TOC16", /* name */ |
846 | false, /* partial_inplace */ | |
847 | 0, /* src_mask */ | |
848 | 0xffff, /* dst_mask */ | |
849 | false), /* pcrel_offset */ | |
850 | ||
851 | /* 16 bit TOC-relative relocation without overflow. */ | |
852 | ||
853 | /* R_PPC64_TOC16_LO 48 half16 #lo (S + A - .TOC.) */ | |
854 | HOWTO (R_PPC64_TOC16_LO, /* type */ | |
855 | 0, /* rightshift */ | |
856 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
857 | 16, /* bitsize */ | |
858 | false, /* pc_relative */ | |
859 | 0, /* bitpos */ | |
860 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 861 | ppc64_elf_toc_reloc, /* special_function */ |
5bd4f169 AM |
862 | "R_PPC64_TOC16_LO", /* name */ |
863 | false, /* partial_inplace */ | |
864 | 0, /* src_mask */ | |
865 | 0xffff, /* dst_mask */ | |
866 | false), /* pcrel_offset */ | |
867 | ||
868 | /* 16 bit TOC-relative relocation, high 16 bits. */ | |
869 | ||
870 | /* R_PPC64_TOC16_HI 49 half16 #hi (S + A - .TOC.) */ | |
871 | HOWTO (R_PPC64_TOC16_HI, /* type */ | |
872 | 16, /* rightshift */ | |
873 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
874 | 16, /* bitsize */ | |
875 | false, /* pc_relative */ | |
876 | 0, /* bitpos */ | |
877 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 878 | ppc64_elf_toc_reloc, /* special_function */ |
5bd4f169 AM |
879 | "R_PPC64_TOC16_HI", /* name */ |
880 | false, /* partial_inplace */ | |
881 | 0, /* src_mask */ | |
882 | 0xffff, /* dst_mask */ | |
883 | false), /* pcrel_offset */ | |
884 | ||
885 | /* 16 bit TOC-relative relocation, high 16 bits, plus 1 if the | |
886 | contents of the low 16 bits, treated as a signed number, is | |
887 | negative. */ | |
888 | ||
889 | /* R_PPC64_TOC16_HA 50 half16 #ha (S + A - .TOC.) */ | |
890 | HOWTO (R_PPC64_TOC16_HA, /* type */ | |
891 | 16, /* rightshift */ | |
892 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
893 | 16, /* bitsize */ | |
894 | false, /* pc_relative */ | |
895 | 0, /* bitpos */ | |
896 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 897 | ppc64_elf_toc_ha_reloc, /* special_function */ |
5bd4f169 AM |
898 | "R_PPC64_TOC16_HA", /* name */ |
899 | false, /* partial_inplace */ | |
900 | 0, /* src_mask */ | |
901 | 0xffff, /* dst_mask */ | |
902 | false), /* pcrel_offset */ | |
903 | ||
904 | /* 64-bit relocation; insert value of TOC base (.TOC.). */ | |
905 | ||
906 | /* R_PPC64_TOC 51 doubleword64 .TOC. */ | |
907 | HOWTO (R_PPC64_TOC, /* type */ | |
908 | 0, /* rightshift */ | |
909 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
910 | 64, /* bitsize */ | |
911 | false, /* pc_relative */ | |
912 | 0, /* bitpos */ | |
913 | complain_overflow_bitfield, /* complain_on_overflow */ | |
805fc799 | 914 | ppc64_elf_toc64_reloc, /* special_function */ |
5bd4f169 AM |
915 | "R_PPC64_TOC", /* name */ |
916 | false, /* partial_inplace */ | |
917 | 0, /* src_mask */ | |
918 | 0xffffffffffffffff, /* dst_mask */ | |
919 | false), /* pcrel_offset */ | |
920 | ||
921 | /* Like R_PPC64_GOT16, but also informs the link editor that the | |
922 | value to relocate may (!) refer to a PLT entry which the link | |
923 | editor (a) may replace with the symbol value. If the link editor | |
924 | is unable to fully resolve the symbol, it may (b) create a PLT | |
925 | entry and store the address to the new PLT entry in the GOT. | |
926 | This permits lazy resolution of function symbols at run time. | |
927 | The link editor may also skip all of this and just (c) emit a | |
928 | R_PPC64_GLOB_DAT to tie the symbol to the GOT entry. */ | |
929 | /* FIXME: R_PPC64_PLTGOT16 not implemented. */ | |
930 | HOWTO (R_PPC64_PLTGOT16, /* type */ | |
931 | 0, /* rightshift */ | |
932 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
933 | 16, /* bitsize */ | |
934 | false, /* pc_relative */ | |
935 | 0, /* bitpos */ | |
936 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 937 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 AM |
938 | "R_PPC64_PLTGOT16", /* name */ |
939 | false, /* partial_inplace */ | |
940 | 0, /* src_mask */ | |
941 | 0xffff, /* dst_mask */ | |
942 | false), /* pcrel_offset */ | |
943 | ||
944 | /* Like R_PPC64_PLTGOT16, but without overflow. */ | |
945 | /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */ | |
946 | HOWTO (R_PPC64_PLTGOT16_LO, /* type */ | |
947 | 0, /* rightshift */ | |
948 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
949 | 16, /* bitsize */ | |
950 | false, /* pc_relative */ | |
951 | 0, /* bitpos */ | |
952 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 953 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 AM |
954 | "R_PPC64_PLTGOT16_LO", /* name */ |
955 | false, /* partial_inplace */ | |
956 | 0, /* src_mask */ | |
957 | 0xffff, /* dst_mask */ | |
958 | false), /* pcrel_offset */ | |
959 | ||
960 | /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address. */ | |
961 | /* FIXME: R_PPC64_PLTGOT16_HI not implemented. */ | |
962 | HOWTO (R_PPC64_PLTGOT16_HI, /* type */ | |
963 | 16, /* rightshift */ | |
964 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
965 | 16, /* bitsize */ | |
966 | false, /* pc_relative */ | |
967 | 0, /* bitpos */ | |
968 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 969 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 AM |
970 | "R_PPC64_PLTGOT16_HI", /* name */ |
971 | false, /* partial_inplace */ | |
972 | 0, /* src_mask */ | |
973 | 0xffff, /* dst_mask */ | |
974 | false), /* pcrel_offset */ | |
975 | ||
976 | /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address, plus | |
977 | 1 if the contents of the low 16 bits, treated as a signed number, | |
978 | is negative. */ | |
979 | /* FIXME: R_PPC64_PLTGOT16_HA not implemented. */ | |
980 | HOWTO (R_PPC64_PLTGOT16_HA, /* type */ | |
981 | 16, /* rightshift */ | |
982 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
983 | 16, /* bitsize */ | |
984 | false, /* pc_relative */ | |
985 | 0, /* bitpos */ | |
986 | complain_overflow_dont,/* complain_on_overflow */ | |
805fc799 | 987 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 AM |
988 | "R_PPC64_PLTGOT16_HA", /* name */ |
989 | false, /* partial_inplace */ | |
990 | 0, /* src_mask */ | |
991 | 0xffff, /* dst_mask */ | |
992 | false), /* pcrel_offset */ | |
993 | ||
994 | /* Like R_PPC64_ADDR16, but for instructions with a DS field. */ | |
995 | HOWTO (R_PPC64_ADDR16_DS, /* type */ | |
996 | 0, /* rightshift */ | |
997 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
998 | 16, /* bitsize */ | |
999 | false, /* pc_relative */ | |
1000 | 0, /* bitpos */ | |
1001 | complain_overflow_bitfield, /* complain_on_overflow */ | |
1002 | bfd_elf_generic_reloc, /* special_function */ | |
1003 | "R_PPC64_ADDR16_DS", /* name */ | |
1004 | false, /* partial_inplace */ | |
1005 | 0, /* src_mask */ | |
1006 | 0xfffc, /* dst_mask */ | |
1007 | false), /* pcrel_offset */ | |
1008 | ||
1009 | /* Like R_PPC64_ADDR16_LO, but for instructions with a DS field. */ | |
1010 | HOWTO (R_PPC64_ADDR16_LO_DS, /* 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 | bfd_elf_generic_reloc, /* special_function */ | |
1018 | "R_PPC64_ADDR16_LO_DS",/* name */ | |
1019 | false, /* partial_inplace */ | |
1020 | 0, /* src_mask */ | |
1021 | 0xfffc, /* dst_mask */ | |
1022 | false), /* pcrel_offset */ | |
1023 | ||
1024 | /* Like R_PPC64_GOT16, but for instructions with a DS field. */ | |
1025 | HOWTO (R_PPC64_GOT16_DS, /* type */ | |
1026 | 0, /* rightshift */ | |
1027 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1028 | 16, /* bitsize */ | |
1029 | false, /* pc_relative */ | |
1030 | 0, /* bitpos */ | |
1031 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 1032 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 AM |
1033 | "R_PPC64_GOT16_DS", /* name */ |
1034 | false, /* partial_inplace */ | |
1035 | 0, /* src_mask */ | |
1036 | 0xfffc, /* dst_mask */ | |
1037 | false), /* pcrel_offset */ | |
1038 | ||
1039 | /* Like R_PPC64_GOT16_LO, but for instructions with a DS field. */ | |
1040 | HOWTO (R_PPC64_GOT16_LO_DS, /* type */ | |
1041 | 0, /* rightshift */ | |
1042 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1043 | 16, /* bitsize */ | |
1044 | false, /* pc_relative */ | |
1045 | 0, /* bitpos */ | |
1046 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 1047 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 AM |
1048 | "R_PPC64_GOT16_LO_DS", /* name */ |
1049 | false, /* partial_inplace */ | |
1050 | 0, /* src_mask */ | |
1051 | 0xfffc, /* dst_mask */ | |
1052 | false), /* pcrel_offset */ | |
1053 | ||
1054 | /* Like R_PPC64_PLT16_LO, but for instructions with a DS field. */ | |
1055 | HOWTO (R_PPC64_PLT16_LO_DS, /* type */ | |
1056 | 0, /* rightshift */ | |
1057 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1058 | 16, /* bitsize */ | |
1059 | false, /* pc_relative */ | |
1060 | 0, /* bitpos */ | |
1061 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 1062 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 AM |
1063 | "R_PPC64_PLT16_LO_DS", /* name */ |
1064 | false, /* partial_inplace */ | |
1065 | 0, /* src_mask */ | |
1066 | 0xfffc, /* dst_mask */ | |
1067 | false), /* pcrel_offset */ | |
1068 | ||
1069 | /* Like R_PPC64_SECTOFF, but for instructions with a DS field. */ | |
5bd4f169 AM |
1070 | HOWTO (R_PPC64_SECTOFF_DS, /* type */ |
1071 | 0, /* rightshift */ | |
c061c2d8 AM |
1072 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1073 | 16, /* bitsize */ | |
805fc799 | 1074 | false, /* pc_relative */ |
5bd4f169 AM |
1075 | 0, /* bitpos */ |
1076 | complain_overflow_bitfield, /* complain_on_overflow */ | |
805fc799 | 1077 | ppc64_elf_sectoff_reloc, /* special_function */ |
5bd4f169 AM |
1078 | "R_PPC64_SECTOFF_DS", /* name */ |
1079 | false, /* partial_inplace */ | |
1080 | 0, /* src_mask */ | |
c061c2d8 | 1081 | 0xfffc, /* dst_mask */ |
805fc799 | 1082 | false), /* pcrel_offset */ |
5bd4f169 AM |
1083 | |
1084 | /* Like R_PPC64_SECTOFF_LO, but for instructions with a DS field. */ | |
1085 | HOWTO (R_PPC64_SECTOFF_LO_DS, /* type */ | |
1086 | 0, /* rightshift */ | |
1087 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1088 | 16, /* bitsize */ | |
1089 | false, /* pc_relative */ | |
1090 | 0, /* bitpos */ | |
1091 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 1092 | ppc64_elf_sectoff_reloc, /* special_function */ |
5bd4f169 AM |
1093 | "R_PPC64_SECTOFF_LO_DS",/* name */ |
1094 | false, /* partial_inplace */ | |
1095 | 0, /* src_mask */ | |
1096 | 0xfffc, /* dst_mask */ | |
1097 | false), /* pcrel_offset */ | |
1098 | ||
1099 | /* Like R_PPC64_TOC16, but for instructions with a DS field. */ | |
1100 | HOWTO (R_PPC64_TOC16_DS, /* type */ | |
1101 | 0, /* rightshift */ | |
1102 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1103 | 16, /* bitsize */ | |
1104 | false, /* pc_relative */ | |
1105 | 0, /* bitpos */ | |
1106 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 1107 | ppc64_elf_toc_reloc, /* special_function */ |
5bd4f169 AM |
1108 | "R_PPC64_TOC16_DS", /* name */ |
1109 | false, /* partial_inplace */ | |
1110 | 0, /* src_mask */ | |
1111 | 0xfffc, /* dst_mask */ | |
1112 | false), /* pcrel_offset */ | |
1113 | ||
1114 | /* Like R_PPC64_TOC16_LO, but for instructions with a DS field. */ | |
1115 | HOWTO (R_PPC64_TOC16_LO_DS, /* type */ | |
1116 | 0, /* rightshift */ | |
1117 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1118 | 16, /* bitsize */ | |
1119 | false, /* pc_relative */ | |
1120 | 0, /* bitpos */ | |
1121 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 1122 | ppc64_elf_toc_reloc, /* special_function */ |
5bd4f169 AM |
1123 | "R_PPC64_TOC16_LO_DS", /* name */ |
1124 | false, /* partial_inplace */ | |
1125 | 0, /* src_mask */ | |
1126 | 0xfffc, /* dst_mask */ | |
1127 | false), /* pcrel_offset */ | |
1128 | ||
1129 | /* Like R_PPC64_PLTGOT16, but for instructions with a DS field. */ | |
1130 | /* FIXME: R_PPC64_PLTGOT16_DS not implemented. */ | |
1131 | HOWTO (R_PPC64_PLTGOT16_DS, /* type */ | |
1132 | 0, /* rightshift */ | |
1133 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1134 | 16, /* bitsize */ | |
1135 | false, /* pc_relative */ | |
1136 | 0, /* bitpos */ | |
1137 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 1138 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 AM |
1139 | "R_PPC64_PLTGOT16_DS", /* name */ |
1140 | false, /* partial_inplace */ | |
1141 | 0, /* src_mask */ | |
1142 | 0xfffc, /* dst_mask */ | |
1143 | false), /* pcrel_offset */ | |
1144 | ||
1145 | /* Like R_PPC64_PLTGOT16_LO, but for instructions with a DS field. */ | |
1146 | /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */ | |
1147 | HOWTO (R_PPC64_PLTGOT16_LO_DS,/* type */ | |
1148 | 0, /* rightshift */ | |
1149 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1150 | 16, /* bitsize */ | |
1151 | false, /* pc_relative */ | |
1152 | 0, /* bitpos */ | |
1153 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 1154 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 AM |
1155 | "R_PPC64_PLTGOT16_LO_DS",/* name */ |
1156 | false, /* partial_inplace */ | |
1157 | 0, /* src_mask */ | |
1158 | 0xfffc, /* dst_mask */ | |
1159 | false), /* pcrel_offset */ | |
1160 | ||
1161 | /* GNU extension to record C++ vtable hierarchy. */ | |
1162 | HOWTO (R_PPC64_GNU_VTINHERIT, /* type */ | |
1163 | 0, /* rightshift */ | |
1164 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
1165 | 0, /* bitsize */ | |
1166 | false, /* pc_relative */ | |
1167 | 0, /* bitpos */ | |
1168 | complain_overflow_dont, /* complain_on_overflow */ | |
1169 | NULL, /* special_function */ | |
1170 | "R_PPC64_GNU_VTINHERIT", /* name */ | |
1171 | false, /* partial_inplace */ | |
1172 | 0, /* src_mask */ | |
1173 | 0, /* dst_mask */ | |
1174 | false), /* pcrel_offset */ | |
1175 | ||
1176 | /* GNU extension to record C++ vtable member usage. */ | |
1177 | HOWTO (R_PPC64_GNU_VTENTRY, /* type */ | |
1178 | 0, /* rightshift */ | |
1179 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
1180 | 0, /* bitsize */ | |
1181 | false, /* pc_relative */ | |
1182 | 0, /* bitpos */ | |
1183 | complain_overflow_dont, /* complain_on_overflow */ | |
1184 | NULL, /* special_function */ | |
1185 | "R_PPC64_GNU_VTENTRY", /* name */ | |
1186 | false, /* partial_inplace */ | |
1187 | 0, /* src_mask */ | |
1188 | 0, /* dst_mask */ | |
1189 | false), /* pcrel_offset */ | |
1190 | }; | |
1191 | ||
1192 | \f | |
1193 | /* Initialize the ppc64_elf_howto_table, so that linear accesses can | |
1194 | be done. */ | |
1195 | ||
1196 | static void | |
1197 | ppc_howto_init () | |
1198 | { | |
1199 | unsigned int i, type; | |
1200 | ||
1201 | for (i = 0; | |
1202 | i < sizeof (ppc64_elf_howto_raw) / sizeof (ppc64_elf_howto_raw[0]); | |
1203 | i++) | |
1204 | { | |
1205 | type = ppc64_elf_howto_raw[i].type; | |
1206 | BFD_ASSERT (type < (sizeof (ppc64_elf_howto_table) | |
1207 | / sizeof (ppc64_elf_howto_table[0]))); | |
1208 | ppc64_elf_howto_table[type] = &ppc64_elf_howto_raw[i]; | |
1209 | } | |
1210 | } | |
1211 | ||
1212 | static reloc_howto_type * | |
1213 | ppc64_elf_reloc_type_lookup (abfd, code) | |
1214 | bfd *abfd ATTRIBUTE_UNUSED; | |
1215 | bfd_reloc_code_real_type code; | |
1216 | { | |
1217 | enum elf_ppc_reloc_type ppc_reloc = R_PPC_NONE; | |
1218 | ||
1219 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) | |
1220 | /* Initialize howto table if needed. */ | |
1221 | ppc_howto_init (); | |
1222 | ||
1223 | switch ((int) code) | |
1224 | { | |
1225 | default: | |
1226 | return (reloc_howto_type *) NULL; | |
1227 | ||
1228 | case BFD_RELOC_NONE: ppc_reloc = R_PPC64_NONE; | |
1229 | break; | |
1230 | case BFD_RELOC_32: ppc_reloc = R_PPC64_ADDR32; | |
1231 | break; | |
1232 | case BFD_RELOC_PPC_BA26: ppc_reloc = R_PPC64_ADDR24; | |
1233 | break; | |
1234 | case BFD_RELOC_16: ppc_reloc = R_PPC64_ADDR16; | |
1235 | break; | |
1236 | case BFD_RELOC_LO16: ppc_reloc = R_PPC64_ADDR16_LO; | |
1237 | break; | |
1238 | case BFD_RELOC_HI16: ppc_reloc = R_PPC64_ADDR16_HI; | |
1239 | break; | |
1240 | case BFD_RELOC_HI16_S: ppc_reloc = R_PPC64_ADDR16_HA; | |
1241 | break; | |
1242 | case BFD_RELOC_PPC_BA16: ppc_reloc = R_PPC64_ADDR14; | |
1243 | break; | |
1244 | case BFD_RELOC_PPC_BA16_BRTAKEN: ppc_reloc = R_PPC64_ADDR14_BRTAKEN; | |
1245 | break; | |
1246 | case BFD_RELOC_PPC_BA16_BRNTAKEN: ppc_reloc = R_PPC64_ADDR14_BRNTAKEN; | |
1247 | break; | |
1248 | case BFD_RELOC_PPC_B26: ppc_reloc = R_PPC64_REL24; | |
1249 | break; | |
1250 | case BFD_RELOC_PPC_B16: ppc_reloc = R_PPC64_REL14; | |
1251 | break; | |
1252 | case BFD_RELOC_PPC_B16_BRTAKEN: ppc_reloc = R_PPC64_REL14_BRTAKEN; | |
1253 | break; | |
1254 | case BFD_RELOC_PPC_B16_BRNTAKEN: ppc_reloc = R_PPC64_REL14_BRNTAKEN; | |
1255 | break; | |
1256 | case BFD_RELOC_16_GOTOFF: ppc_reloc = R_PPC64_GOT16; | |
1257 | break; | |
1258 | case BFD_RELOC_LO16_GOTOFF: ppc_reloc = R_PPC64_GOT16_LO; | |
1259 | break; | |
1260 | case BFD_RELOC_HI16_GOTOFF: ppc_reloc = R_PPC64_GOT16_HI; | |
1261 | break; | |
1262 | case BFD_RELOC_HI16_S_GOTOFF: ppc_reloc = R_PPC64_GOT16_HA; | |
1263 | break; | |
1264 | case BFD_RELOC_PPC_COPY: ppc_reloc = R_PPC64_COPY; | |
1265 | break; | |
1266 | case BFD_RELOC_PPC_GLOB_DAT: ppc_reloc = R_PPC64_GLOB_DAT; | |
1267 | break; | |
1268 | case BFD_RELOC_32_PCREL: ppc_reloc = R_PPC64_REL32; | |
1269 | break; | |
1270 | case BFD_RELOC_32_PLTOFF: ppc_reloc = R_PPC64_PLT32; | |
1271 | break; | |
1272 | case BFD_RELOC_32_PLT_PCREL: ppc_reloc = R_PPC64_PLTREL32; | |
1273 | break; | |
1274 | case BFD_RELOC_LO16_PLTOFF: ppc_reloc = R_PPC64_PLT16_LO; | |
1275 | break; | |
1276 | case BFD_RELOC_HI16_PLTOFF: ppc_reloc = R_PPC64_PLT16_HI; | |
1277 | break; | |
1278 | case BFD_RELOC_HI16_S_PLTOFF: ppc_reloc = R_PPC64_PLT16_HA; | |
1279 | break; | |
c061c2d8 | 1280 | case BFD_RELOC_16_BASEREL: ppc_reloc = R_PPC64_SECTOFF; |
5bd4f169 AM |
1281 | break; |
1282 | case BFD_RELOC_LO16_BASEREL: ppc_reloc = R_PPC64_SECTOFF_LO; | |
1283 | break; | |
1284 | case BFD_RELOC_HI16_BASEREL: ppc_reloc = R_PPC64_SECTOFF_HI; | |
1285 | break; | |
1286 | case BFD_RELOC_HI16_S_BASEREL: ppc_reloc = R_PPC64_SECTOFF_HA; | |
1287 | break; | |
10ed1bba | 1288 | case BFD_RELOC_CTOR: ppc_reloc = R_PPC64_ADDR64; |
5bd4f169 AM |
1289 | break; |
1290 | case BFD_RELOC_64: ppc_reloc = R_PPC64_ADDR64; | |
1291 | break; | |
1292 | case BFD_RELOC_PPC64_HIGHER: ppc_reloc = R_PPC64_ADDR16_HIGHER; | |
1293 | break; | |
1294 | case BFD_RELOC_PPC64_HIGHER_S: ppc_reloc = R_PPC64_ADDR16_HIGHERA; | |
1295 | break; | |
1296 | case BFD_RELOC_PPC64_HIGHEST: ppc_reloc = R_PPC64_ADDR16_HIGHEST; | |
1297 | break; | |
1298 | case BFD_RELOC_PPC64_HIGHEST_S: ppc_reloc = R_PPC64_ADDR16_HIGHESTA; | |
1299 | break; | |
1300 | case BFD_RELOC_64_PCREL: ppc_reloc = R_PPC64_REL64; | |
1301 | break; | |
1302 | case BFD_RELOC_64_PLTOFF: ppc_reloc = R_PPC64_PLT64; | |
1303 | break; | |
1304 | case BFD_RELOC_64_PLT_PCREL: ppc_reloc = R_PPC64_PLTREL64; | |
1305 | break; | |
1306 | case BFD_RELOC_PPC_TOC16: ppc_reloc = R_PPC64_TOC16; | |
1307 | break; | |
1308 | case BFD_RELOC_PPC64_TOC16_LO: ppc_reloc = R_PPC64_TOC16_LO; | |
1309 | break; | |
1310 | case BFD_RELOC_PPC64_TOC16_HI: ppc_reloc = R_PPC64_TOC16_HI; | |
1311 | break; | |
1312 | case BFD_RELOC_PPC64_TOC16_HA: ppc_reloc = R_PPC64_TOC16_HA; | |
1313 | break; | |
1314 | case BFD_RELOC_PPC64_TOC: ppc_reloc = R_PPC64_TOC; | |
1315 | break; | |
1316 | case BFD_RELOC_PPC64_PLTGOT16: ppc_reloc = R_PPC64_PLTGOT16; | |
1317 | break; | |
1318 | case BFD_RELOC_PPC64_PLTGOT16_LO: ppc_reloc = R_PPC64_PLTGOT16_LO; | |
1319 | break; | |
1320 | case BFD_RELOC_PPC64_PLTGOT16_HI: ppc_reloc = R_PPC64_PLTGOT16_HI; | |
1321 | break; | |
1322 | case BFD_RELOC_PPC64_PLTGOT16_HA: ppc_reloc = R_PPC64_PLTGOT16_HA; | |
1323 | break; | |
1324 | case BFD_RELOC_PPC64_ADDR16_DS: ppc_reloc = R_PPC64_ADDR16_DS; | |
1325 | break; | |
1326 | case BFD_RELOC_PPC64_ADDR16_LO_DS: ppc_reloc = R_PPC64_ADDR16_LO_DS; | |
1327 | break; | |
1328 | case BFD_RELOC_PPC64_GOT16_DS: ppc_reloc = R_PPC64_GOT16_DS; | |
1329 | break; | |
1330 | case BFD_RELOC_PPC64_GOT16_LO_DS: ppc_reloc = R_PPC64_GOT16_LO_DS; | |
1331 | break; | |
1332 | case BFD_RELOC_PPC64_PLT16_LO_DS: ppc_reloc = R_PPC64_PLT16_LO_DS; | |
1333 | break; | |
1334 | case BFD_RELOC_PPC64_SECTOFF_DS: ppc_reloc = R_PPC64_SECTOFF_DS; | |
1335 | break; | |
1336 | case BFD_RELOC_PPC64_SECTOFF_LO_DS: ppc_reloc = R_PPC64_SECTOFF_LO_DS; | |
1337 | break; | |
1338 | case BFD_RELOC_PPC64_TOC16_DS: ppc_reloc = R_PPC64_TOC16_DS; | |
1339 | break; | |
1340 | case BFD_RELOC_PPC64_TOC16_LO_DS: ppc_reloc = R_PPC64_TOC16_LO_DS; | |
1341 | break; | |
1342 | case BFD_RELOC_PPC64_PLTGOT16_DS: ppc_reloc = R_PPC64_PLTGOT16_DS; | |
1343 | break; | |
1344 | case BFD_RELOC_PPC64_PLTGOT16_LO_DS: ppc_reloc = R_PPC64_PLTGOT16_LO_DS; | |
1345 | break; | |
1346 | case BFD_RELOC_VTABLE_INHERIT: ppc_reloc = R_PPC64_GNU_VTINHERIT; | |
1347 | break; | |
1348 | case BFD_RELOC_VTABLE_ENTRY: ppc_reloc = R_PPC64_GNU_VTENTRY; | |
1349 | break; | |
1350 | } | |
1351 | ||
1352 | return ppc64_elf_howto_table[(int) ppc_reloc]; | |
1353 | }; | |
1354 | ||
1355 | /* Set the howto pointer for a PowerPC ELF reloc. */ | |
1356 | ||
1357 | static void | |
1358 | ppc64_elf_info_to_howto (abfd, cache_ptr, dst) | |
1359 | bfd *abfd ATTRIBUTE_UNUSED; | |
1360 | arelent *cache_ptr; | |
1361 | Elf64_Internal_Rela *dst; | |
1362 | { | |
65f38f15 AM |
1363 | unsigned int type; |
1364 | ||
ef60b7ff | 1365 | /* Initialize howto table if needed. */ |
5bd4f169 | 1366 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) |
5bd4f169 AM |
1367 | ppc_howto_init (); |
1368 | ||
65f38f15 AM |
1369 | type = ELF64_R_TYPE (dst->r_info); |
1370 | BFD_ASSERT (type < (sizeof (ppc64_elf_howto_table) | |
1371 | / sizeof (ppc64_elf_howto_table[0]))); | |
1372 | cache_ptr->howto = ppc64_elf_howto_table[type]; | |
5bd4f169 AM |
1373 | } |
1374 | ||
65f38f15 | 1375 | /* Handle the R_PPC_ADDR16_HA and similar relocs. */ |
5bd4f169 AM |
1376 | |
1377 | static bfd_reloc_status_type | |
805fc799 AM |
1378 | ppc64_elf_ha_reloc (abfd, reloc_entry, symbol, data, |
1379 | input_section, output_bfd, error_message) | |
1380 | bfd *abfd; | |
5bd4f169 AM |
1381 | arelent *reloc_entry; |
1382 | asymbol *symbol; | |
805fc799 | 1383 | PTR data; |
5bd4f169 AM |
1384 | asection *input_section; |
1385 | bfd *output_bfd; | |
805fc799 | 1386 | char **error_message; |
5bd4f169 | 1387 | { |
805fc799 AM |
1388 | /* If this is a relocatable link (output_bfd test tells us), just |
1389 | call the generic function. Any adjustment will be done at final | |
1390 | link time. */ | |
1391 | if (output_bfd != NULL) | |
cedb70c5 | 1392 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
1393 | input_section, output_bfd, error_message); |
1394 | ||
1395 | /* Adjust the addend for sign extension of the low 16 bits. | |
1396 | We won't actually be using the low 16 bits, so trashing them | |
1397 | doesn't matter. */ | |
1398 | reloc_entry->addend += 0x8000; | |
1399 | return bfd_reloc_continue; | |
1400 | } | |
5bd4f169 | 1401 | |
805fc799 AM |
1402 | static bfd_reloc_status_type |
1403 | ppc64_elf_brtaken_reloc (abfd, reloc_entry, symbol, data, | |
1404 | input_section, output_bfd, error_message) | |
1405 | bfd *abfd; | |
1406 | arelent *reloc_entry; | |
1407 | asymbol *symbol; | |
1408 | PTR data; | |
1409 | asection *input_section; | |
1410 | bfd *output_bfd; | |
1411 | char **error_message; | |
1412 | { | |
1413 | long insn; | |
1414 | enum elf_ppc_reloc_type r_type; | |
1415 | bfd_size_type octets; | |
1416 | /* Disabled until we sort out how ld should choose 'y' vs 'at'. */ | |
1417 | boolean is_power4 = false; | |
1418 | ||
1419 | /* If this is a relocatable link (output_bfd test tells us), just | |
1420 | call the generic function. Any adjustment will be done at final | |
1421 | link time. */ | |
5bd4f169 | 1422 | if (output_bfd != NULL) |
cedb70c5 | 1423 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
1424 | input_section, output_bfd, error_message); |
1425 | ||
1426 | octets = reloc_entry->address * bfd_octets_per_byte (abfd); | |
1427 | insn = bfd_get_32 (abfd, (bfd_byte *) data + octets); | |
1428 | insn &= ~(0x01 << 21); | |
1429 | r_type = (enum elf_ppc_reloc_type) reloc_entry->howto->type; | |
1430 | if (r_type == R_PPC64_ADDR14_BRTAKEN | |
1431 | || r_type == R_PPC64_REL14_BRTAKEN) | |
cedb70c5 | 1432 | insn |= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */ |
805fc799 AM |
1433 | |
1434 | if (is_power4) | |
5bd4f169 | 1435 | { |
805fc799 AM |
1436 | /* Set 'a' bit. This is 0b00010 in BO field for branch |
1437 | on CR(BI) insns (BO == 001at or 011at), and 0b01000 | |
1438 | for branch on CTR insns (BO == 1a00t or 1a01t). */ | |
1439 | if ((insn & (0x14 << 21)) == (0x04 << 21)) | |
1440 | insn |= 0x02 << 21; | |
1441 | else if ((insn & (0x14 << 21)) == (0x10 << 21)) | |
1442 | insn |= 0x08 << 21; | |
1443 | else | |
1444 | return bfd_reloc_continue; | |
5bd4f169 | 1445 | } |
805fc799 AM |
1446 | else |
1447 | { | |
1448 | bfd_vma target = 0; | |
1449 | bfd_vma from; | |
5bd4f169 | 1450 | |
805fc799 AM |
1451 | if (!bfd_is_com_section (symbol->section)) |
1452 | target = symbol->value; | |
1453 | target += symbol->section->output_section->vma; | |
1454 | target += symbol->section->output_offset; | |
1455 | target += reloc_entry->addend; | |
5bd4f169 | 1456 | |
805fc799 AM |
1457 | from = (reloc_entry->address |
1458 | + input_section->output_offset | |
1459 | + input_section->output_section->vma); | |
5bd4f169 | 1460 | |
805fc799 AM |
1461 | /* Invert 'y' bit if not the default. */ |
1462 | if ((bfd_signed_vma) (target - from) < 0) | |
1463 | insn ^= 0x01 << 21; | |
1464 | } | |
1465 | bfd_put_32 (abfd, (bfd_vma) insn, (bfd_byte *) data + octets); | |
1466 | return bfd_reloc_continue; | |
1467 | } | |
5bd4f169 | 1468 | |
805fc799 AM |
1469 | static bfd_reloc_status_type |
1470 | ppc64_elf_sectoff_reloc (abfd, reloc_entry, symbol, data, | |
1471 | input_section, output_bfd, error_message) | |
1472 | bfd *abfd; | |
1473 | arelent *reloc_entry; | |
1474 | asymbol *symbol; | |
1475 | PTR data; | |
1476 | asection *input_section; | |
1477 | bfd *output_bfd; | |
1478 | char **error_message; | |
1479 | { | |
1480 | /* If this is a relocatable link (output_bfd test tells us), just | |
1481 | call the generic function. Any adjustment will be done at final | |
1482 | link time. */ | |
1483 | if (output_bfd != NULL) | |
cedb70c5 | 1484 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 | 1485 | input_section, output_bfd, error_message); |
5bd4f169 | 1486 | |
805fc799 AM |
1487 | /* Subtract the symbol section base address. */ |
1488 | reloc_entry->addend -= symbol->section->output_section->vma; | |
5bd4f169 AM |
1489 | return bfd_reloc_continue; |
1490 | } | |
1491 | ||
805fc799 AM |
1492 | static bfd_reloc_status_type |
1493 | ppc64_elf_sectoff_ha_reloc (abfd, reloc_entry, symbol, data, | |
1494 | input_section, output_bfd, error_message) | |
1495 | bfd *abfd; | |
1496 | arelent *reloc_entry; | |
1497 | asymbol *symbol; | |
1498 | PTR data; | |
1499 | asection *input_section; | |
1500 | bfd *output_bfd; | |
1501 | char **error_message; | |
1502 | { | |
1503 | /* If this is a relocatable link (output_bfd test tells us), just | |
1504 | call the generic function. Any adjustment will be done at final | |
1505 | link time. */ | |
1506 | if (output_bfd != NULL) | |
cedb70c5 | 1507 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
1508 | input_section, output_bfd, error_message); |
1509 | ||
1510 | /* Subtract the symbol section base address. */ | |
1511 | reloc_entry->addend -= symbol->section->output_section->vma; | |
1512 | ||
1513 | /* Adjust the addend for sign extension of the low 16 bits. */ | |
1514 | reloc_entry->addend += 0x8000; | |
1515 | return bfd_reloc_continue; | |
1516 | } | |
1517 | ||
1518 | static bfd_reloc_status_type | |
1519 | ppc64_elf_toc_reloc (abfd, reloc_entry, symbol, data, | |
1520 | input_section, output_bfd, error_message) | |
1521 | bfd *abfd; | |
1522 | arelent *reloc_entry; | |
1523 | asymbol *symbol; | |
1524 | PTR data; | |
1525 | asection *input_section; | |
1526 | bfd *output_bfd; | |
1527 | char **error_message; | |
1528 | { | |
1529 | bfd_vma TOCstart; | |
1530 | ||
1531 | /* If this is a relocatable link (output_bfd test tells us), just | |
1532 | call the generic function. Any adjustment will be done at final | |
1533 | link time. */ | |
1534 | if (output_bfd != NULL) | |
cedb70c5 | 1535 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
1536 | input_section, output_bfd, error_message); |
1537 | ||
1538 | TOCstart = _bfd_get_gp_value (input_section->output_section->owner); | |
1539 | if (TOCstart == 0) | |
1540 | TOCstart = ppc64_elf_toc (input_section->output_section->owner); | |
1541 | ||
1542 | /* Subtract the TOC base address. */ | |
1543 | reloc_entry->addend -= TOCstart + TOC_BASE_OFF; | |
1544 | return bfd_reloc_continue; | |
1545 | } | |
1546 | ||
1547 | static bfd_reloc_status_type | |
1548 | ppc64_elf_toc_ha_reloc (abfd, reloc_entry, symbol, data, | |
1549 | input_section, output_bfd, error_message) | |
1550 | bfd *abfd; | |
1551 | arelent *reloc_entry; | |
1552 | asymbol *symbol; | |
1553 | PTR data; | |
1554 | asection *input_section; | |
1555 | bfd *output_bfd; | |
1556 | char **error_message; | |
1557 | { | |
1558 | bfd_vma TOCstart; | |
1559 | ||
1560 | /* If this is a relocatable link (output_bfd test tells us), just | |
1561 | call the generic function. Any adjustment will be done at final | |
1562 | link time. */ | |
1563 | if (output_bfd != NULL) | |
cedb70c5 | 1564 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
1565 | input_section, output_bfd, error_message); |
1566 | ||
1567 | TOCstart = _bfd_get_gp_value (input_section->output_section->owner); | |
1568 | if (TOCstart == 0) | |
1569 | TOCstart = ppc64_elf_toc (input_section->output_section->owner); | |
1570 | ||
1571 | /* Subtract the TOC base address. */ | |
1572 | reloc_entry->addend -= TOCstart + TOC_BASE_OFF; | |
1573 | ||
1574 | /* Adjust the addend for sign extension of the low 16 bits. */ | |
1575 | reloc_entry->addend += 0x8000; | |
1576 | return bfd_reloc_continue; | |
1577 | } | |
1578 | ||
1579 | static bfd_reloc_status_type | |
1580 | ppc64_elf_toc64_reloc (abfd, reloc_entry, symbol, data, | |
1581 | input_section, output_bfd, error_message) | |
1582 | bfd *abfd; | |
1583 | arelent *reloc_entry; | |
1584 | asymbol *symbol; | |
1585 | PTR data; | |
1586 | asection *input_section; | |
1587 | bfd *output_bfd; | |
1588 | char **error_message; | |
1589 | { | |
1590 | bfd_vma TOCstart; | |
1591 | bfd_size_type octets; | |
1592 | ||
1593 | /* If this is a relocatable link (output_bfd test tells us), just | |
1594 | call the generic function. Any adjustment will be done at final | |
1595 | link time. */ | |
1596 | if (output_bfd != NULL) | |
cedb70c5 | 1597 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
1598 | input_section, output_bfd, error_message); |
1599 | ||
1600 | TOCstart = _bfd_get_gp_value (input_section->output_section->owner); | |
1601 | if (TOCstart == 0) | |
1602 | TOCstart = ppc64_elf_toc (input_section->output_section->owner); | |
1603 | ||
1604 | octets = reloc_entry->address * bfd_octets_per_byte (abfd); | |
1605 | bfd_put_64 (abfd, TOCstart + TOC_BASE_OFF, (bfd_byte *) data + octets); | |
1606 | return bfd_reloc_ok; | |
1607 | } | |
1608 | ||
1609 | static bfd_reloc_status_type | |
1610 | ppc64_elf_unhandled_reloc (abfd, reloc_entry, symbol, data, | |
1611 | input_section, output_bfd, error_message) | |
1612 | bfd *abfd; | |
1613 | arelent *reloc_entry; | |
1614 | asymbol *symbol; | |
1615 | PTR data; | |
1616 | asection *input_section; | |
1617 | bfd *output_bfd; | |
1618 | char **error_message; | |
1619 | { | |
1620 | /* If this is a relocatable link (output_bfd test tells us), just | |
1621 | call the generic function. Any adjustment will be done at final | |
1622 | link time. */ | |
1623 | if (output_bfd != NULL) | |
cedb70c5 | 1624 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
1625 | input_section, output_bfd, error_message); |
1626 | ||
1627 | if (error_message != NULL) | |
1628 | { | |
1629 | static char buf[60]; | |
1630 | sprintf (buf, "generic linker can't handle %s", | |
1631 | reloc_entry->howto->name); | |
1632 | *error_message = buf; | |
1633 | } | |
1634 | return bfd_reloc_dangerous; | |
1635 | } | |
1636 | ||
7cdc5bba AM |
1637 | /* Return symbol info as per usual for ELF targets, except that |
1638 | symbols in .opd are given 'd' or 'D' for type. */ | |
1639 | ||
1640 | static void | |
1641 | ppc64_elf_get_symbol_info (abfd, symbol, ret) | |
1642 | bfd *abfd; | |
1643 | asymbol *symbol; | |
1644 | symbol_info *ret; | |
1645 | { | |
1646 | _bfd_elf_get_symbol_info (abfd, symbol, ret); | |
1647 | if (ret->type == '?' | |
1648 | && (symbol->flags & (BSF_GLOBAL | BSF_LOCAL)) != 0 | |
1649 | && strcmp (symbol->section->name, ".opd") == 0) | |
1650 | ret->type = (symbol->flags & BSF_GLOBAL) != 0 ? 'D' : 'd'; | |
1651 | } | |
1652 | ||
feee612b AM |
1653 | /* Fix bad default arch selected for a 64 bit input bfd when the |
1654 | default is 32 bit. */ | |
1655 | ||
1656 | static boolean | |
1657 | ppc64_elf_object_p (abfd) | |
1658 | bfd *abfd; | |
1659 | { | |
1660 | if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 32) | |
1661 | { | |
1662 | Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd); | |
1663 | ||
1664 | if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS64) | |
1665 | { | |
1666 | /* Relies on arch after 32 bit default being 64 bit default. */ | |
1667 | abfd->arch_info = abfd->arch_info->next; | |
1668 | BFD_ASSERT (abfd->arch_info->bits_per_word == 64); | |
1669 | } | |
1670 | } | |
1671 | return true; | |
1672 | } | |
1673 | ||
5bd4f169 AM |
1674 | /* Function to set whether a module needs the -mrelocatable bit set. */ |
1675 | ||
1676 | static boolean | |
1677 | ppc64_elf_set_private_flags (abfd, flags) | |
1678 | bfd *abfd; | |
1679 | flagword flags; | |
1680 | { | |
1681 | BFD_ASSERT (!elf_flags_init (abfd) | |
1682 | || elf_elfheader (abfd)->e_flags == flags); | |
1683 | ||
1684 | elf_elfheader (abfd)->e_flags = flags; | |
1685 | elf_flags_init (abfd) = true; | |
1686 | return true; | |
1687 | } | |
1688 | ||
5bd4f169 AM |
1689 | /* Merge backend specific data from an object file to the output |
1690 | object file when linking. */ | |
1691 | static boolean | |
1692 | ppc64_elf_merge_private_bfd_data (ibfd, obfd) | |
1693 | bfd *ibfd; | |
1694 | bfd *obfd; | |
1695 | { | |
1696 | flagword old_flags; | |
1697 | flagword new_flags; | |
1698 | boolean error; | |
1699 | ||
1700 | /* Check if we have the same endianess. */ | |
1701 | if (ibfd->xvec->byteorder != obfd->xvec->byteorder | |
1702 | && obfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN) | |
1703 | { | |
1704 | const char *msg; | |
1705 | ||
1706 | if (bfd_big_endian (ibfd)) | |
1707 | msg = _("%s: compiled for a big endian system and target is little endian"); | |
1708 | else | |
1709 | msg = _("%s: compiled for a little endian system and target is big endian"); | |
1710 | ||
8f615d07 | 1711 | (*_bfd_error_handler) (msg, bfd_archive_filename (ibfd)); |
5bd4f169 AM |
1712 | |
1713 | bfd_set_error (bfd_error_wrong_format); | |
1714 | return false; | |
1715 | } | |
1716 | ||
1717 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour | |
1718 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
1719 | return true; | |
1720 | ||
1721 | new_flags = elf_elfheader (ibfd)->e_flags; | |
1722 | old_flags = elf_elfheader (obfd)->e_flags; | |
1723 | if (!elf_flags_init (obfd)) | |
1724 | { | |
1725 | /* First call, no flags set. */ | |
1726 | elf_flags_init (obfd) = true; | |
1727 | elf_elfheader (obfd)->e_flags = new_flags; | |
1728 | } | |
1729 | ||
1730 | else if (new_flags == old_flags) | |
1731 | /* Compatible flags are ok. */ | |
1732 | ; | |
1733 | ||
1734 | else | |
1735 | { | |
1736 | /* Incompatible flags. Warn about -mrelocatable mismatch. | |
1737 | Allow -mrelocatable-lib to be linked with either. */ | |
1738 | error = false; | |
1739 | if ((new_flags & EF_PPC_RELOCATABLE) != 0 | |
1740 | && (old_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0) | |
1741 | { | |
1742 | error = true; | |
1743 | (*_bfd_error_handler) | |
1744 | (_("%s: compiled with -mrelocatable and linked with modules compiled normally"), | |
8f615d07 | 1745 | bfd_archive_filename (ibfd)); |
5bd4f169 AM |
1746 | } |
1747 | else if ((new_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0 | |
1748 | && (old_flags & EF_PPC_RELOCATABLE) != 0) | |
1749 | { | |
1750 | error = true; | |
1751 | (*_bfd_error_handler) | |
1752 | (_("%s: compiled normally and linked with modules compiled with -mrelocatable"), | |
8f615d07 | 1753 | bfd_archive_filename (ibfd)); |
5bd4f169 AM |
1754 | } |
1755 | ||
1756 | /* The output is -mrelocatable-lib iff both the input files are. */ | |
1757 | if (! (new_flags & EF_PPC_RELOCATABLE_LIB)) | |
1758 | elf_elfheader (obfd)->e_flags &= ~EF_PPC_RELOCATABLE_LIB; | |
1759 | ||
1760 | /* The output is -mrelocatable iff it can't be -mrelocatable-lib, | |
3fad3c7c | 1761 | but each input file is either -mrelocatable or -mrelocatable-lib. */ |
5bd4f169 AM |
1762 | if (! (elf_elfheader (obfd)->e_flags & EF_PPC_RELOCATABLE_LIB) |
1763 | && (new_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE)) | |
1764 | && (old_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE))) | |
1765 | elf_elfheader (obfd)->e_flags |= EF_PPC_RELOCATABLE; | |
1766 | ||
1767 | /* Do not warn about eabi vs. V.4 mismatch, just or in the bit | |
1768 | if any module uses it. */ | |
1769 | elf_elfheader (obfd)->e_flags |= (new_flags & EF_PPC_EMB); | |
1770 | ||
1771 | new_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB); | |
1772 | old_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB); | |
1773 | ||
1774 | /* Warn about any other mismatches. */ | |
1775 | if (new_flags != old_flags) | |
1776 | { | |
1777 | error = true; | |
1778 | (*_bfd_error_handler) | |
1779 | (_("%s: uses different e_flags (0x%lx) fields than previous modules (0x%lx)"), | |
8f615d07 | 1780 | bfd_archive_filename (ibfd), (long) new_flags, (long) old_flags); |
5bd4f169 AM |
1781 | } |
1782 | ||
1783 | if (error) | |
1784 | { | |
1785 | bfd_set_error (bfd_error_bad_value); | |
1786 | return false; | |
1787 | } | |
1788 | } | |
1789 | ||
1790 | return true; | |
1791 | } | |
1792 | ||
1793 | /* Handle a PowerPC specific section when reading an object file. This | |
1794 | is called when elfcode.h finds a section with an unknown type. */ | |
1795 | ||
1796 | static boolean | |
1797 | ppc64_elf_section_from_shdr (abfd, hdr, name) | |
1798 | bfd *abfd; | |
1799 | Elf64_Internal_Shdr *hdr; | |
90937f86 | 1800 | const char *name; |
5bd4f169 AM |
1801 | { |
1802 | asection *newsect; | |
1803 | flagword flags; | |
1804 | ||
1805 | if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name)) | |
1806 | return false; | |
1807 | ||
1808 | newsect = hdr->bfd_section; | |
1809 | flags = bfd_get_section_flags (abfd, newsect); | |
1810 | if (hdr->sh_flags & SHF_EXCLUDE) | |
1811 | flags |= SEC_EXCLUDE; | |
1812 | ||
1813 | if (hdr->sh_type == SHT_ORDERED) | |
1814 | flags |= SEC_SORT_ENTRIES; | |
1815 | ||
1816 | bfd_set_section_flags (abfd, newsect, flags); | |
1817 | return true; | |
1818 | } | |
1819 | \f | |
65f38f15 AM |
1820 | /* The following functions are specific to the ELF linker, while |
1821 | functions above are used generally. Those named ppc64_elf_* are | |
1822 | called by the main ELF linker code. They appear in this file more | |
1823 | or less in the order in which they are called. eg. | |
1824 | ppc64_elf_check_relocs is called early in the link process, | |
1825 | ppc64_elf_finish_dynamic_sections is one of the last functions | |
e86ce104 AM |
1826 | called. |
1827 | ||
1828 | PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that | |
1829 | functions have both a function code symbol and a function descriptor | |
1830 | symbol. A call to foo in a relocatable object file looks like: | |
1831 | ||
1832 | . .text | |
1833 | . x: | |
1834 | . bl .foo | |
1835 | . nop | |
1836 | ||
1837 | The function definition in another object file might be: | |
1838 | ||
1839 | . .section .opd | |
1840 | . foo: .quad .foo | |
1841 | . .quad .TOC.@tocbase | |
1842 | . .quad 0 | |
1843 | . | |
1844 | . .text | |
1845 | . .foo: blr | |
1846 | ||
1847 | When the linker resolves the call during a static link, the branch | |
1848 | unsurprisingly just goes to .foo and the .opd information is unused. | |
1849 | If the function definition is in a shared library, things are a little | |
1850 | different: The call goes via a plt call stub, the opd information gets | |
1851 | copied to the plt, and the linker patches the nop. | |
1852 | ||
1853 | . x: | |
1854 | . bl .foo_stub | |
1855 | . ld 2,40(1) | |
1856 | . | |
1857 | . | |
1858 | . .foo_stub: | |
1859 | . addis 12,2,Lfoo@toc@ha # in practice, the call stub | |
1860 | . addi 12,12,Lfoo@toc@l # is slightly optimised, but | |
1861 | . std 2,40(1) # this is the general idea | |
1862 | . ld 11,0(12) | |
1863 | . ld 2,8(12) | |
1864 | . mtctr 11 | |
1865 | . ld 11,16(12) | |
1866 | . bctr | |
1867 | . | |
1868 | . .section .plt | |
1869 | . Lfoo: reloc (R_PPC64_JMP_SLOT, foo) | |
1870 | ||
1871 | The "reloc ()" notation is supposed to indicate that the linker emits | |
1872 | an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd | |
1873 | copying. | |
1874 | ||
1875 | What are the difficulties here? Well, firstly, the relocations | |
1876 | examined by the linker in check_relocs are against the function code | |
1877 | sym .foo, while the dynamic relocation in the plt is emitted against | |
1878 | the function descriptor symbol, foo. Somewhere along the line, we need | |
1879 | to carefully copy dynamic link information from one symbol to the other. | |
1880 | Secondly, the generic part of the elf linker will make .foo a dynamic | |
1881 | symbol as is normal for most other backends. We need foo dynamic | |
1882 | instead, at least for an application final link. However, when | |
1883 | creating a shared library containing foo, we need to have both symbols | |
1884 | dynamic so that references to .foo are satisfied during the early | |
1885 | stages of linking. Otherwise the linker might decide to pull in a | |
41bd81ab | 1886 | definition from some other object, eg. a static library. */ |
65f38f15 AM |
1887 | |
1888 | /* The linker needs to keep track of the number of relocs that it | |
1889 | decides to copy as dynamic relocs in check_relocs for each symbol. | |
1890 | This is so that it can later discard them if they are found to be | |
1891 | unnecessary. We store the information in a field extending the | |
1892 | regular ELF linker hash table. */ | |
1893 | ||
1894 | struct ppc_dyn_relocs | |
1895 | { | |
1896 | struct ppc_dyn_relocs *next; | |
1897 | ||
1898 | /* The input section of the reloc. */ | |
1899 | asection *sec; | |
1900 | ||
1901 | /* Total number of relocs copied for the input section. */ | |
1902 | bfd_size_type count; | |
1903 | ||
1904 | /* Number of pc-relative relocs copied for the input section. */ | |
1905 | bfd_size_type pc_count; | |
1906 | }; | |
1907 | ||
1908 | /* Of those relocs that might be copied as dynamic relocs, this macro | |
1909 | selects between relative and absolute types. */ | |
1910 | ||
1911 | #define IS_ABSOLUTE_RELOC(RTYPE) \ | |
805fc799 AM |
1912 | ((RTYPE) != R_PPC64_REL32 \ |
1913 | && (RTYPE) != R_PPC64_REL64 \ | |
1914 | && (RTYPE) != R_PPC64_ADDR30) | |
65f38f15 | 1915 | |
721956f4 AM |
1916 | /* Section name for stubs is the associated section name plus this |
1917 | string. */ | |
1918 | #define STUB_SUFFIX ".stub" | |
1919 | ||
1920 | /* Linker stubs. | |
1921 | ppc_stub_long_branch: | |
1922 | Used when a 14 bit branch (or even a 24 bit branch) can't reach its | |
1923 | destination, but a 24 bit branch in a stub section will reach. | |
1924 | . b dest | |
1925 | ||
1926 | ppc_stub_plt_branch: | |
1927 | Similar to the above, but a 24 bit branch in the stub section won't | |
1928 | reach its destination. | |
1929 | . addis %r12,%r2,xxx@ha | |
1930 | . ld %r11,xxx@l(%r12) | |
1931 | . mtctr %r11 | |
1932 | . bctr | |
1933 | ||
1934 | ppc_stub_plt_call: | |
1935 | Used to call a function in a shared library. | |
1936 | . addis %r12,%r2,xxx@ha | |
1937 | . std %r2,40(%r1) | |
1938 | . ld %r11,xxx+0@l(%r12) | |
1939 | . ld %r2,xxx+8@l(%r12) | |
1940 | . mtctr %r11 | |
1941 | . ld %r11,xxx+16@l(%r12) | |
1942 | . bctr | |
1943 | */ | |
1944 | ||
1945 | enum ppc_stub_type { | |
1946 | ppc_stub_none, | |
1947 | ppc_stub_long_branch, | |
1948 | ppc_stub_plt_branch, | |
1949 | ppc_stub_plt_call | |
1950 | }; | |
1951 | ||
1952 | struct ppc_stub_hash_entry { | |
1953 | ||
1954 | /* Base hash table entry structure. */ | |
1955 | struct bfd_hash_entry root; | |
1956 | ||
1957 | /* The stub section. */ | |
1958 | asection *stub_sec; | |
1959 | ||
1960 | /* Offset within stub_sec of the beginning of this stub. */ | |
1961 | bfd_vma stub_offset; | |
1962 | ||
1963 | /* Given the symbol's value and its section we can determine its final | |
1964 | value when building the stubs (so the stub knows where to jump. */ | |
1965 | bfd_vma target_value; | |
1966 | asection *target_section; | |
1967 | ||
1968 | enum ppc_stub_type stub_type; | |
1969 | ||
1970 | /* The symbol table entry, if any, that this was derived from. */ | |
1971 | struct ppc_link_hash_entry *h; | |
1972 | ||
1973 | /* Where this stub is being called from, or, in the case of combined | |
1974 | stub sections, the first input section in the group. */ | |
1975 | asection *id_sec; | |
1976 | }; | |
1977 | ||
1978 | struct ppc_branch_hash_entry { | |
1979 | ||
1980 | /* Base hash table entry structure. */ | |
1981 | struct bfd_hash_entry root; | |
1982 | ||
1983 | /* Offset within .branch_lt. */ | |
1984 | unsigned int offset; | |
1985 | ||
1986 | /* Generation marker. */ | |
1987 | unsigned int iter; | |
1988 | }; | |
65f38f15 AM |
1989 | |
1990 | struct ppc_link_hash_entry | |
1991 | { | |
1992 | struct elf_link_hash_entry elf; | |
1993 | ||
721956f4 AM |
1994 | /* A pointer to the most recently used stub hash entry against this |
1995 | symbol. */ | |
1996 | struct ppc_stub_hash_entry *stub_cache; | |
1997 | ||
65f38f15 AM |
1998 | /* Track dynamic relocs copied for this symbol. */ |
1999 | struct ppc_dyn_relocs *dyn_relocs; | |
e86ce104 | 2000 | |
721956f4 AM |
2001 | /* Link between function code and descriptor symbols. */ |
2002 | struct elf_link_hash_entry *oh; | |
2003 | ||
e86ce104 AM |
2004 | /* Flag function code and descriptor symbols. */ |
2005 | unsigned int is_func:1; | |
2006 | unsigned int is_func_descriptor:1; | |
1e2f5b6e | 2007 | unsigned int is_entry:1; |
65f38f15 AM |
2008 | }; |
2009 | ||
2010 | /* ppc64 ELF linker hash table. */ | |
2011 | ||
2012 | struct ppc_link_hash_table | |
2013 | { | |
2014 | struct elf_link_hash_table elf; | |
2015 | ||
721956f4 AM |
2016 | /* The stub hash table. */ |
2017 | struct bfd_hash_table stub_hash_table; | |
2018 | ||
2019 | /* Another hash table for plt_branch stubs. */ | |
2020 | struct bfd_hash_table branch_hash_table; | |
2021 | ||
2022 | /* Linker stub bfd. */ | |
2023 | bfd *stub_bfd; | |
2024 | ||
2025 | /* Linker call-backs. */ | |
2026 | asection * (*add_stub_section) PARAMS ((const char *, asection *)); | |
2027 | void (*layout_sections_again) PARAMS ((void)); | |
2028 | ||
2029 | /* Array to keep track of which stub sections have been created, and | |
2030 | information on stub grouping. */ | |
2031 | struct map_stub { | |
2032 | /* This is the section to which stubs in the group will be attached. */ | |
2033 | asection *link_sec; | |
2034 | /* The stub section. */ | |
2035 | asection *stub_sec; | |
2036 | } *stub_group; | |
2037 | ||
2038 | /* Assorted information used by ppc64_elf_size_stubs. */ | |
721956f4 AM |
2039 | int top_index; |
2040 | asection **input_list; | |
721956f4 | 2041 | |
65f38f15 AM |
2042 | /* Short-cuts to get to dynamic linker sections. */ |
2043 | asection *sgot; | |
2044 | asection *srelgot; | |
2045 | asection *splt; | |
2046 | asection *srelplt; | |
2047 | asection *sdynbss; | |
2048 | asection *srelbss; | |
2049 | asection *sglink; | |
82bd7b59 | 2050 | asection *sfpr; |
721956f4 AM |
2051 | asection *sbrlt; |
2052 | asection *srelbrlt; | |
ec338859 | 2053 | |
5d1634d7 | 2054 | /* Set on error. */ |
721956f4 AM |
2055 | unsigned int stub_error; |
2056 | ||
2057 | /* Flag set when small branches are detected. Used to | |
2058 | select suitable defaults for the stub group size. */ | |
2059 | unsigned int has_14bit_branch; | |
2060 | ||
805fc799 AM |
2061 | /* Set if we detect a reference undefined weak symbol. */ |
2062 | unsigned int have_undefweak; | |
2063 | ||
721956f4 AM |
2064 | /* Incremented every time we size stubs. */ |
2065 | unsigned int stub_iteration; | |
5d1634d7 | 2066 | |
ec338859 AM |
2067 | /* Small local sym to section mapping cache. */ |
2068 | struct sym_sec_cache sym_sec; | |
65f38f15 AM |
2069 | }; |
2070 | ||
721956f4 AM |
2071 | static struct bfd_hash_entry *stub_hash_newfunc |
2072 | PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *)); | |
2073 | static struct bfd_hash_entry *branch_hash_newfunc | |
2074 | PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *)); | |
2075 | static struct bfd_hash_entry *link_hash_newfunc | |
2076 | PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *)); | |
2077 | static struct bfd_link_hash_table *ppc64_elf_link_hash_table_create | |
2078 | PARAMS ((bfd *)); | |
2079 | static void ppc64_elf_link_hash_table_free | |
2080 | PARAMS ((struct bfd_link_hash_table *)); | |
2081 | static char *ppc_stub_name | |
2082 | PARAMS ((const asection *, const asection *, | |
2083 | const struct ppc_link_hash_entry *, const Elf_Internal_Rela *)); | |
2084 | static struct ppc_stub_hash_entry *ppc_get_stub_entry | |
2085 | PARAMS ((const asection *, const asection *, struct elf_link_hash_entry *, | |
2086 | const Elf_Internal_Rela *, struct ppc_link_hash_table *)); | |
2087 | static struct ppc_stub_hash_entry *ppc_add_stub | |
2088 | PARAMS ((const char *, asection *, struct ppc_link_hash_table *)); | |
2089 | static boolean create_linkage_sections | |
2090 | PARAMS ((bfd *, struct bfd_link_info *)); | |
2091 | static boolean create_got_section | |
2092 | PARAMS ((bfd *, struct bfd_link_info *)); | |
2093 | static boolean ppc64_elf_create_dynamic_sections | |
2094 | PARAMS ((bfd *, struct bfd_link_info *)); | |
2095 | static void ppc64_elf_copy_indirect_symbol | |
2096 | PARAMS ((struct elf_link_hash_entry *, struct elf_link_hash_entry *)); | |
2097 | static boolean ppc64_elf_check_relocs | |
2098 | PARAMS ((bfd *, struct bfd_link_info *, asection *, | |
2099 | const Elf_Internal_Rela *)); | |
2100 | static asection * ppc64_elf_gc_mark_hook | |
1e2f5b6e AM |
2101 | PARAMS ((asection *, struct bfd_link_info *, Elf_Internal_Rela *, |
2102 | struct elf_link_hash_entry *, Elf_Internal_Sym *)); | |
721956f4 | 2103 | static boolean ppc64_elf_gc_sweep_hook |
1e2f5b6e AM |
2104 | PARAMS ((bfd *, struct bfd_link_info *, asection *, |
2105 | const Elf_Internal_Rela *)); | |
721956f4 AM |
2106 | static boolean func_desc_adjust |
2107 | PARAMS ((struct elf_link_hash_entry *, PTR)); | |
2108 | static boolean ppc64_elf_func_desc_adjust | |
2109 | PARAMS ((bfd *, struct bfd_link_info *)); | |
2110 | static boolean ppc64_elf_adjust_dynamic_symbol | |
2111 | PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *)); | |
2112 | static void ppc64_elf_hide_symbol | |
2113 | PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *, boolean)); | |
1e2f5b6e AM |
2114 | static boolean edit_opd |
2115 | PARAMS ((bfd *, struct bfd_link_info *)); | |
721956f4 AM |
2116 | static boolean allocate_dynrelocs |
2117 | PARAMS ((struct elf_link_hash_entry *, PTR)); | |
2118 | static boolean readonly_dynrelocs | |
2119 | PARAMS ((struct elf_link_hash_entry *, PTR)); | |
2120 | static enum elf_reloc_type_class ppc64_elf_reloc_type_class | |
2121 | PARAMS ((const Elf_Internal_Rela *)); | |
2122 | static boolean ppc64_elf_size_dynamic_sections | |
2123 | PARAMS ((bfd *, struct bfd_link_info *)); | |
2124 | static INLINE enum ppc_stub_type ppc_type_of_stub | |
2125 | PARAMS ((asection *, const Elf_Internal_Rela *, | |
2126 | struct ppc_link_hash_entry **, bfd_vma)); | |
2127 | static bfd_byte *build_plt_stub | |
2128 | PARAMS ((bfd *, bfd_byte *, int, int)); | |
2129 | static boolean ppc_build_one_stub | |
2130 | PARAMS ((struct bfd_hash_entry *, PTR)); | |
2131 | static boolean ppc_size_one_stub | |
2132 | PARAMS ((struct bfd_hash_entry *, PTR)); | |
2133 | static void group_sections | |
2134 | PARAMS ((struct ppc_link_hash_table *, bfd_size_type, boolean)); | |
721956f4 AM |
2135 | static boolean ppc64_elf_fake_sections |
2136 | PARAMS ((bfd *, Elf64_Internal_Shdr *, asection *)); | |
2137 | static boolean ppc64_elf_relocate_section | |
2138 | PARAMS ((bfd *, struct bfd_link_info *info, bfd *, asection *, bfd_byte *, | |
2139 | Elf_Internal_Rela *relocs, Elf_Internal_Sym *local_syms, | |
2140 | asection **)); | |
2141 | static boolean ppc64_elf_finish_dynamic_symbol | |
2142 | PARAMS ((bfd *, struct bfd_link_info *, struct elf_link_hash_entry *, | |
2143 | Elf_Internal_Sym *)); | |
2144 | static boolean ppc64_elf_finish_dynamic_sections | |
2145 | PARAMS ((bfd *, struct bfd_link_info *)); | |
2146 | ||
65f38f15 AM |
2147 | /* Get the ppc64 ELF linker hash table from a link_info structure. */ |
2148 | ||
2149 | #define ppc_hash_table(p) \ | |
2150 | ((struct ppc_link_hash_table *) ((p)->hash)) | |
2151 | ||
721956f4 AM |
2152 | #define ppc_stub_hash_lookup(table, string, create, copy) \ |
2153 | ((struct ppc_stub_hash_entry *) \ | |
2154 | bfd_hash_lookup ((table), (string), (create), (copy))) | |
2155 | ||
2156 | #define ppc_branch_hash_lookup(table, string, create, copy) \ | |
2157 | ((struct ppc_branch_hash_entry *) \ | |
2158 | bfd_hash_lookup ((table), (string), (create), (copy))) | |
2159 | ||
2160 | /* Create an entry in the stub hash table. */ | |
2161 | ||
2162 | static struct bfd_hash_entry * | |
2163 | stub_hash_newfunc (entry, table, string) | |
2164 | struct bfd_hash_entry *entry; | |
2165 | struct bfd_hash_table *table; | |
2166 | const char *string; | |
2167 | { | |
2168 | /* Allocate the structure if it has not already been allocated by a | |
2169 | subclass. */ | |
2170 | if (entry == NULL) | |
2171 | { | |
2172 | entry = bfd_hash_allocate (table, sizeof (struct ppc_stub_hash_entry)); | |
2173 | if (entry == NULL) | |
2174 | return entry; | |
2175 | } | |
2176 | ||
2177 | /* Call the allocation method of the superclass. */ | |
2178 | entry = bfd_hash_newfunc (entry, table, string); | |
2179 | if (entry != NULL) | |
2180 | { | |
2181 | struct ppc_stub_hash_entry *eh; | |
2182 | ||
2183 | /* Initialize the local fields. */ | |
2184 | eh = (struct ppc_stub_hash_entry *) entry; | |
2185 | eh->stub_sec = NULL; | |
2186 | eh->stub_offset = 0; | |
2187 | eh->target_value = 0; | |
2188 | eh->target_section = NULL; | |
2189 | eh->stub_type = ppc_stub_none; | |
2190 | eh->h = NULL; | |
2191 | eh->id_sec = NULL; | |
2192 | } | |
2193 | ||
2194 | return entry; | |
2195 | } | |
2196 | ||
2197 | /* Create an entry in the branch hash table. */ | |
2198 | ||
2199 | static struct bfd_hash_entry * | |
2200 | branch_hash_newfunc (entry, table, string) | |
2201 | struct bfd_hash_entry *entry; | |
2202 | struct bfd_hash_table *table; | |
2203 | const char *string; | |
2204 | { | |
2205 | /* Allocate the structure if it has not already been allocated by a | |
2206 | subclass. */ | |
2207 | if (entry == NULL) | |
2208 | { | |
2209 | entry = bfd_hash_allocate (table, sizeof (struct ppc_branch_hash_entry)); | |
2210 | if (entry == NULL) | |
2211 | return entry; | |
2212 | } | |
2213 | ||
2214 | /* Call the allocation method of the superclass. */ | |
2215 | entry = bfd_hash_newfunc (entry, table, string); | |
2216 | if (entry != NULL) | |
2217 | { | |
2218 | struct ppc_branch_hash_entry *eh; | |
2219 | ||
2220 | /* Initialize the local fields. */ | |
2221 | eh = (struct ppc_branch_hash_entry *) entry; | |
2222 | eh->offset = 0; | |
2223 | eh->iter = 0; | |
2224 | } | |
2225 | ||
2226 | return entry; | |
2227 | } | |
2228 | ||
65f38f15 AM |
2229 | /* Create an entry in a ppc64 ELF linker hash table. */ |
2230 | ||
2231 | static struct bfd_hash_entry * | |
2232 | link_hash_newfunc (entry, table, string) | |
2233 | struct bfd_hash_entry *entry; | |
2234 | struct bfd_hash_table *table; | |
2235 | const char *string; | |
2236 | { | |
2237 | /* Allocate the structure if it has not already been allocated by a | |
2238 | subclass. */ | |
2239 | if (entry == NULL) | |
2240 | { | |
2241 | entry = bfd_hash_allocate (table, sizeof (struct ppc_link_hash_entry)); | |
2242 | if (entry == NULL) | |
2243 | return entry; | |
2244 | } | |
2245 | ||
2246 | /* Call the allocation method of the superclass. */ | |
2247 | entry = _bfd_elf_link_hash_newfunc (entry, table, string); | |
2248 | if (entry != NULL) | |
2249 | { | |
2250 | struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) entry; | |
2251 | ||
721956f4 | 2252 | eh->stub_cache = NULL; |
65f38f15 | 2253 | eh->dyn_relocs = NULL; |
721956f4 | 2254 | eh->oh = NULL; |
e86ce104 AM |
2255 | eh->is_func = 0; |
2256 | eh->is_func_descriptor = 0; | |
1e2f5b6e | 2257 | eh->is_entry = 0; |
65f38f15 AM |
2258 | } |
2259 | ||
2260 | return entry; | |
2261 | } | |
2262 | ||
2263 | /* Create a ppc64 ELF linker hash table. */ | |
2264 | ||
2265 | static struct bfd_link_hash_table * | |
2266 | ppc64_elf_link_hash_table_create (abfd) | |
2267 | bfd *abfd; | |
2268 | { | |
2269 | struct ppc_link_hash_table *htab; | |
2270 | bfd_size_type amt = sizeof (struct ppc_link_hash_table); | |
2271 | ||
e2d34d7d | 2272 | htab = (struct ppc_link_hash_table *) bfd_malloc (amt); |
65f38f15 AM |
2273 | if (htab == NULL) |
2274 | return NULL; | |
2275 | ||
2276 | if (! _bfd_elf_link_hash_table_init (&htab->elf, abfd, link_hash_newfunc)) | |
2277 | { | |
e2d34d7d | 2278 | free (htab); |
65f38f15 AM |
2279 | return NULL; |
2280 | } | |
2281 | ||
721956f4 AM |
2282 | /* Init the stub hash table too. */ |
2283 | if (!bfd_hash_table_init (&htab->stub_hash_table, stub_hash_newfunc)) | |
2284 | return NULL; | |
2285 | ||
2286 | /* And the branch hash table. */ | |
2287 | if (!bfd_hash_table_init (&htab->branch_hash_table, branch_hash_newfunc)) | |
2288 | return NULL; | |
2289 | ||
2290 | htab->stub_bfd = NULL; | |
2291 | htab->add_stub_section = NULL; | |
2292 | htab->layout_sections_again = NULL; | |
2293 | htab->stub_group = NULL; | |
65f38f15 AM |
2294 | htab->sgot = NULL; |
2295 | htab->srelgot = NULL; | |
2296 | htab->splt = NULL; | |
2297 | htab->srelplt = NULL; | |
2298 | htab->sdynbss = NULL; | |
2299 | htab->srelbss = NULL; | |
2300 | htab->sglink = NULL; | |
82bd7b59 | 2301 | htab->sfpr = NULL; |
721956f4 AM |
2302 | htab->sbrlt = NULL; |
2303 | htab->srelbrlt = NULL; | |
2304 | htab->stub_error = 0; | |
2305 | htab->has_14bit_branch = 0; | |
805fc799 | 2306 | htab->have_undefweak = 0; |
721956f4 | 2307 | htab->stub_iteration = 0; |
ec338859 | 2308 | htab->sym_sec.abfd = NULL; |
65f38f15 AM |
2309 | |
2310 | return &htab->elf.root; | |
2311 | } | |
2312 | ||
721956f4 AM |
2313 | /* Free the derived linker hash table. */ |
2314 | ||
2315 | static void | |
2316 | ppc64_elf_link_hash_table_free (hash) | |
2317 | struct bfd_link_hash_table *hash; | |
2318 | { | |
2319 | struct ppc_link_hash_table *ret = (struct ppc_link_hash_table *) hash; | |
2320 | ||
2321 | bfd_hash_table_free (&ret->stub_hash_table); | |
2322 | bfd_hash_table_free (&ret->branch_hash_table); | |
2323 | _bfd_generic_link_hash_table_free (hash); | |
2324 | } | |
2325 | ||
2326 | /* Build a name for an entry in the stub hash table. */ | |
2327 | ||
2328 | static char * | |
2329 | ppc_stub_name (input_section, sym_sec, h, rel) | |
2330 | const asection *input_section; | |
2331 | const asection *sym_sec; | |
2332 | const struct ppc_link_hash_entry *h; | |
2333 | const Elf_Internal_Rela *rel; | |
2334 | { | |
2335 | char *stub_name; | |
2336 | bfd_size_type len; | |
2337 | ||
2338 | /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31 | |
2339 | offsets from a sym as a branch target? In fact, we could | |
2340 | probably assume the addend is always zero. */ | |
2341 | BFD_ASSERT (((int) rel->r_addend & 0xffffffff) == rel->r_addend); | |
2342 | ||
2343 | if (h) | |
2344 | { | |
2345 | len = 8 + 1 + strlen (h->elf.root.root.string) + 1 + 8 + 1; | |
2346 | stub_name = bfd_malloc (len); | |
2347 | if (stub_name != NULL) | |
2348 | { | |
2349 | sprintf (stub_name, "%08x_%s+%x", | |
2350 | input_section->id & 0xffffffff, | |
2351 | h->elf.root.root.string, | |
2352 | (int) rel->r_addend & 0xffffffff); | |
2353 | } | |
2354 | } | |
2355 | else | |
2356 | { | |
2357 | len = 8 + 1 + 8 + 1 + 8 + 1 + 16 + 1; | |
2358 | stub_name = bfd_malloc (len); | |
2359 | if (stub_name != NULL) | |
2360 | { | |
2361 | sprintf (stub_name, "%08x_%x:%x+%x", | |
2362 | input_section->id & 0xffffffff, | |
2363 | sym_sec->id & 0xffffffff, | |
2364 | (int) ELF64_R_SYM (rel->r_info) & 0xffffffff, | |
2365 | (int) rel->r_addend & 0xffffffff); | |
2366 | } | |
2367 | } | |
2368 | return stub_name; | |
2369 | } | |
2370 | ||
2371 | /* Look up an entry in the stub hash. Stub entries are cached because | |
2372 | creating the stub name takes a bit of time. */ | |
2373 | ||
2374 | static struct ppc_stub_hash_entry * | |
2375 | ppc_get_stub_entry (input_section, sym_sec, hash, rel, htab) | |
2376 | const asection *input_section; | |
2377 | const asection *sym_sec; | |
2378 | struct elf_link_hash_entry *hash; | |
2379 | const Elf_Internal_Rela *rel; | |
2380 | struct ppc_link_hash_table *htab; | |
2381 | { | |
2382 | struct ppc_stub_hash_entry *stub_entry; | |
2383 | struct ppc_link_hash_entry *h = (struct ppc_link_hash_entry *) hash; | |
2384 | const asection *id_sec; | |
2385 | ||
2386 | /* If this input section is part of a group of sections sharing one | |
2387 | stub section, then use the id of the first section in the group. | |
2388 | Stub names need to include a section id, as there may well be | |
2389 | more than one stub used to reach say, printf, and we need to | |
2390 | distinguish between them. */ | |
2391 | id_sec = htab->stub_group[input_section->id].link_sec; | |
2392 | ||
2393 | if (h != NULL && h->stub_cache != NULL | |
2394 | && h->stub_cache->h == h | |
2395 | && h->stub_cache->id_sec == id_sec) | |
2396 | { | |
2397 | stub_entry = h->stub_cache; | |
2398 | } | |
2399 | else | |
2400 | { | |
2401 | char *stub_name; | |
2402 | ||
2403 | stub_name = ppc_stub_name (id_sec, sym_sec, h, rel); | |
2404 | if (stub_name == NULL) | |
2405 | return NULL; | |
2406 | ||
2407 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, | |
2408 | stub_name, false, false); | |
2409 | if (h != NULL) | |
2410 | h->stub_cache = stub_entry; | |
2411 | ||
2412 | free (stub_name); | |
2413 | } | |
2414 | ||
2415 | return stub_entry; | |
2416 | } | |
2417 | ||
2418 | /* Add a new stub entry to the stub hash. Not all fields of the new | |
2419 | stub entry are initialised. */ | |
2420 | ||
2421 | static struct ppc_stub_hash_entry * | |
2422 | ppc_add_stub (stub_name, section, htab) | |
2423 | const char *stub_name; | |
2424 | asection *section; | |
2425 | struct ppc_link_hash_table *htab; | |
2426 | { | |
2427 | asection *link_sec; | |
2428 | asection *stub_sec; | |
2429 | struct ppc_stub_hash_entry *stub_entry; | |
2430 | ||
2431 | link_sec = htab->stub_group[section->id].link_sec; | |
2432 | stub_sec = htab->stub_group[section->id].stub_sec; | |
2433 | if (stub_sec == NULL) | |
2434 | { | |
2435 | stub_sec = htab->stub_group[link_sec->id].stub_sec; | |
2436 | if (stub_sec == NULL) | |
2437 | { | |
d4c88bbb | 2438 | size_t namelen; |
721956f4 AM |
2439 | bfd_size_type len; |
2440 | char *s_name; | |
2441 | ||
d4c88bbb AM |
2442 | namelen = strlen (link_sec->name); |
2443 | len = namelen + sizeof (STUB_SUFFIX); | |
721956f4 AM |
2444 | s_name = bfd_alloc (htab->stub_bfd, len); |
2445 | if (s_name == NULL) | |
2446 | return NULL; | |
2447 | ||
d4c88bbb AM |
2448 | memcpy (s_name, link_sec->name, namelen); |
2449 | memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX)); | |
721956f4 AM |
2450 | stub_sec = (*htab->add_stub_section) (s_name, link_sec); |
2451 | if (stub_sec == NULL) | |
2452 | return NULL; | |
2453 | htab->stub_group[link_sec->id].stub_sec = stub_sec; | |
2454 | } | |
2455 | htab->stub_group[section->id].stub_sec = stub_sec; | |
2456 | } | |
2457 | ||
2458 | /* Enter this entry into the linker stub hash table. */ | |
2459 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, stub_name, | |
2460 | true, false); | |
2461 | if (stub_entry == NULL) | |
2462 | { | |
2463 | (*_bfd_error_handler) (_("%s: cannot create stub entry %s"), | |
2464 | bfd_archive_filename (section->owner), | |
2465 | stub_name); | |
2466 | return NULL; | |
2467 | } | |
2468 | ||
2469 | stub_entry->stub_sec = stub_sec; | |
2470 | stub_entry->stub_offset = 0; | |
2471 | stub_entry->id_sec = link_sec; | |
2472 | return stub_entry; | |
2473 | } | |
2474 | ||
82bd7b59 AM |
2475 | /* Create sections for linker generated code. */ |
2476 | ||
2477 | static boolean | |
2478 | create_linkage_sections (dynobj, info) | |
2479 | bfd *dynobj; | |
2480 | struct bfd_link_info *info; | |
2481 | { | |
2482 | struct ppc_link_hash_table *htab; | |
2483 | flagword flags; | |
2484 | ||
2485 | htab = ppc_hash_table (info); | |
2486 | ||
2487 | /* Create .sfpr for code to save and restore fp regs. */ | |
2488 | flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY | |
2489 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
721956f4 | 2490 | htab->sfpr = bfd_make_section_anyway (dynobj, ".sfpr"); |
82bd7b59 AM |
2491 | if (htab->sfpr == NULL |
2492 | || ! bfd_set_section_flags (dynobj, htab->sfpr, flags) | |
2493 | || ! bfd_set_section_alignment (dynobj, htab->sfpr, 2)) | |
2494 | return false; | |
2495 | ||
721956f4 AM |
2496 | /* Create .glink for lazy dynamic linking support. */ |
2497 | htab->sglink = bfd_make_section_anyway (dynobj, ".glink"); | |
82bd7b59 AM |
2498 | if (htab->sglink == NULL |
2499 | || ! bfd_set_section_flags (dynobj, htab->sglink, flags) | |
2500 | || ! bfd_set_section_alignment (dynobj, htab->sglink, 2)) | |
2501 | return false; | |
2502 | ||
721956f4 AM |
2503 | /* Create .branch_lt for plt_branch stubs. */ |
2504 | flags = (SEC_ALLOC | SEC_LOAD | |
2505 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
2506 | htab->sbrlt = bfd_make_section_anyway (dynobj, ".branch_lt"); | |
2507 | if (htab->sbrlt == NULL | |
2508 | || ! bfd_set_section_flags (dynobj, htab->sbrlt, flags) | |
2509 | || ! bfd_set_section_alignment (dynobj, htab->sbrlt, 3)) | |
2510 | return false; | |
2511 | ||
2512 | if (info->shared) | |
2513 | { | |
2514 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | |
2515 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
1e2f5b6e | 2516 | htab->srelbrlt = bfd_make_section_anyway (dynobj, ".rela.branch_lt"); |
721956f4 AM |
2517 | if (!htab->srelbrlt |
2518 | || ! bfd_set_section_flags (dynobj, htab->srelbrlt, flags) | |
2519 | || ! bfd_set_section_alignment (dynobj, htab->srelbrlt, 3)) | |
2520 | return false; | |
2521 | } | |
82bd7b59 AM |
2522 | return true; |
2523 | } | |
2524 | ||
65f38f15 AM |
2525 | /* Create .got and .rela.got sections in DYNOBJ, and set up |
2526 | shortcuts to them in our hash table. */ | |
2527 | ||
2528 | static boolean | |
2529 | create_got_section (dynobj, info) | |
2530 | bfd *dynobj; | |
2531 | struct bfd_link_info *info; | |
2532 | { | |
2533 | struct ppc_link_hash_table *htab; | |
2534 | ||
2535 | if (! _bfd_elf_create_got_section (dynobj, info)) | |
2536 | return false; | |
2537 | ||
2538 | htab = ppc_hash_table (info); | |
2539 | htab->sgot = bfd_get_section_by_name (dynobj, ".got"); | |
2540 | if (!htab->sgot) | |
2541 | abort (); | |
2542 | ||
2543 | htab->srelgot = bfd_make_section (dynobj, ".rela.got"); | |
2544 | if (!htab->srelgot | |
2545 | || ! bfd_set_section_flags (dynobj, htab->srelgot, | |
2546 | (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | |
2547 | | SEC_IN_MEMORY | SEC_LINKER_CREATED | |
2548 | | SEC_READONLY)) | |
2549 | || ! bfd_set_section_alignment (dynobj, htab->srelgot, 3)) | |
2550 | return false; | |
2551 | return true; | |
2552 | } | |
5bd4f169 | 2553 | |
82bd7b59 | 2554 | /* Create the dynamic sections, and set up shortcuts. */ |
5bd4f169 AM |
2555 | |
2556 | static boolean | |
65f38f15 AM |
2557 | ppc64_elf_create_dynamic_sections (dynobj, info) |
2558 | bfd *dynobj; | |
5bd4f169 AM |
2559 | struct bfd_link_info *info; |
2560 | { | |
65f38f15 | 2561 | struct ppc_link_hash_table *htab; |
5bd4f169 | 2562 | |
65f38f15 AM |
2563 | htab = ppc_hash_table (info); |
2564 | if (!htab->sgot && !create_got_section (dynobj, info)) | |
5bd4f169 AM |
2565 | return false; |
2566 | ||
65f38f15 | 2567 | if (!_bfd_elf_create_dynamic_sections (dynobj, info)) |
5bd4f169 | 2568 | return false; |
65f38f15 AM |
2569 | |
2570 | htab->splt = bfd_get_section_by_name (dynobj, ".plt"); | |
2571 | htab->srelplt = bfd_get_section_by_name (dynobj, ".rela.plt"); | |
2572 | htab->sdynbss = bfd_get_section_by_name (dynobj, ".dynbss"); | |
2573 | if (!info->shared) | |
2574 | htab->srelbss = bfd_get_section_by_name (dynobj, ".rela.bss"); | |
2575 | ||
2576 | if (!htab->splt || !htab->srelplt || !htab->sdynbss | |
2577 | || (!info->shared && !htab->srelbss)) | |
2578 | abort (); | |
2579 | ||
5bd4f169 AM |
2580 | return true; |
2581 | } | |
2582 | ||
65f38f15 AM |
2583 | /* Copy the extra info we tack onto an elf_link_hash_entry. */ |
2584 | ||
2585 | static void | |
2586 | ppc64_elf_copy_indirect_symbol (dir, ind) | |
2587 | struct elf_link_hash_entry *dir, *ind; | |
2588 | { | |
2589 | struct ppc_link_hash_entry *edir, *eind; | |
2590 | ||
2591 | edir = (struct ppc_link_hash_entry *) dir; | |
2592 | eind = (struct ppc_link_hash_entry *) ind; | |
2593 | ||
bbd7ec4a | 2594 | if (eind->dyn_relocs != NULL) |
65f38f15 | 2595 | { |
bbd7ec4a AM |
2596 | if (edir->dyn_relocs != NULL) |
2597 | { | |
2598 | struct ppc_dyn_relocs **pp; | |
2599 | struct ppc_dyn_relocs *p; | |
2600 | ||
1e370bd2 | 2601 | if (ind->root.type == bfd_link_hash_indirect) |
bbd7ec4a AM |
2602 | abort (); |
2603 | ||
2604 | /* Add reloc counts against the weak sym to the strong sym | |
2605 | list. Merge any entries against the same section. */ | |
2606 | for (pp = &eind->dyn_relocs; (p = *pp) != NULL; ) | |
2607 | { | |
2608 | struct ppc_dyn_relocs *q; | |
2609 | ||
2610 | for (q = edir->dyn_relocs; q != NULL; q = q->next) | |
2611 | if (q->sec == p->sec) | |
2612 | { | |
2613 | q->pc_count += p->pc_count; | |
2614 | q->count += p->count; | |
2615 | *pp = p->next; | |
2616 | break; | |
2617 | } | |
2618 | if (q == NULL) | |
2619 | pp = &p->next; | |
2620 | } | |
2621 | *pp = edir->dyn_relocs; | |
2622 | } | |
2623 | ||
65f38f15 AM |
2624 | edir->dyn_relocs = eind->dyn_relocs; |
2625 | eind->dyn_relocs = NULL; | |
2626 | } | |
65f38f15 | 2627 | |
d1329ca3 AM |
2628 | edir->is_func |= eind->is_func; |
2629 | edir->is_func_descriptor |= eind->is_func_descriptor; | |
1e2f5b6e | 2630 | edir->is_entry |= eind->is_entry; |
e86ce104 | 2631 | |
65f38f15 AM |
2632 | _bfd_elf_link_hash_copy_indirect (dir, ind); |
2633 | } | |
2634 | ||
1e2f5b6e AM |
2635 | /* Set a flag, used by ppc64_elf_gc_mark_hook, on the entry symbol and |
2636 | symbols undefined on the command-line. */ | |
2637 | ||
2638 | boolean | |
2639 | ppc64_elf_mark_entry_syms (info) | |
2640 | struct bfd_link_info *info; | |
2641 | { | |
2642 | struct ppc_link_hash_table *htab; | |
2643 | struct bfd_sym_chain *sym; | |
2644 | ||
2645 | htab = ppc_hash_table (info); | |
2646 | for (sym = info->gc_sym_list; sym; sym = sym->next) | |
2647 | { | |
2648 | struct elf_link_hash_entry *h; | |
2649 | ||
2650 | h = elf_link_hash_lookup (&htab->elf, sym->name, false, false, false); | |
2651 | if (h != NULL) | |
2652 | ((struct ppc_link_hash_entry *) h)->is_entry = 1; | |
2653 | } | |
2654 | return true; | |
2655 | } | |
2656 | ||
5bd4f169 | 2657 | /* Look through the relocs for a section during the first phase, and |
65f38f15 | 2658 | calculate needed space in the global offset table, procedure |
5d1634d7 | 2659 | linkage table, and dynamic reloc sections. */ |
5bd4f169 AM |
2660 | |
2661 | static boolean | |
2662 | ppc64_elf_check_relocs (abfd, info, sec, relocs) | |
2663 | bfd *abfd; | |
2664 | struct bfd_link_info *info; | |
2665 | asection *sec; | |
2666 | const Elf_Internal_Rela *relocs; | |
2667 | { | |
65f38f15 | 2668 | struct ppc_link_hash_table *htab; |
5bd4f169 AM |
2669 | Elf_Internal_Shdr *symtab_hdr; |
2670 | struct elf_link_hash_entry **sym_hashes, **sym_hashes_end; | |
2671 | const Elf_Internal_Rela *rel; | |
2672 | const Elf_Internal_Rela *rel_end; | |
5bd4f169 | 2673 | asection *sreloc; |
1e2f5b6e | 2674 | asection **opd_sym_map; |
5bd4f169 AM |
2675 | |
2676 | if (info->relocateable) | |
2677 | return true; | |
2678 | ||
65f38f15 | 2679 | htab = ppc_hash_table (info); |
5bd4f169 | 2680 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
5bd4f169 AM |
2681 | |
2682 | sym_hashes = elf_sym_hashes (abfd); | |
2683 | sym_hashes_end = (sym_hashes | |
1e2f5b6e AM |
2684 | + symtab_hdr->sh_size / sizeof (Elf64_External_Sym) |
2685 | - symtab_hdr->sh_info); | |
5bd4f169 AM |
2686 | |
2687 | sreloc = NULL; | |
1e2f5b6e AM |
2688 | opd_sym_map = NULL; |
2689 | if (strcmp (bfd_get_section_name (abfd, sec), ".opd") == 0) | |
2690 | { | |
2691 | /* Garbage collection needs some extra help with .opd sections. | |
2692 | We don't want to necessarily keep everything referenced by | |
2693 | relocs in .opd, as that would keep all functions. Instead, | |
2694 | if we reference an .opd symbol (a function descriptor), we | |
2695 | want to keep the function code symbol's section. This is | |
2696 | easy for global symbols, but for local syms we need to keep | |
2697 | information about the associated function section. Later, if | |
2698 | edit_opd deletes entries, we'll use this array to adjust | |
2699 | local syms in .opd. */ | |
2700 | union opd_info { | |
2701 | asection *func_section; | |
2702 | long entry_adjust; | |
2703 | }; | |
2704 | bfd_size_type amt; | |
2705 | ||
2706 | amt = sec->_raw_size * sizeof (union opd_info) / 24; | |
2707 | opd_sym_map = (asection **) bfd_zalloc (abfd, amt); | |
2708 | if (opd_sym_map == NULL) | |
2709 | return false; | |
2710 | elf_section_data (sec)->tdata = opd_sym_map; | |
2711 | } | |
5bd4f169 | 2712 | |
82bd7b59 AM |
2713 | if (htab->elf.dynobj == NULL) |
2714 | htab->elf.dynobj = abfd; | |
2715 | if (htab->sfpr == NULL | |
2716 | && !create_linkage_sections (htab->elf.dynobj, info)) | |
2717 | return false; | |
2718 | ||
5bd4f169 AM |
2719 | rel_end = relocs + sec->reloc_count; |
2720 | for (rel = relocs; rel < rel_end; rel++) | |
2721 | { | |
2722 | unsigned long r_symndx; | |
2723 | struct elf_link_hash_entry *h; | |
a33d1f77 | 2724 | enum elf_ppc_reloc_type r_type; |
5bd4f169 AM |
2725 | |
2726 | r_symndx = ELF64_R_SYM (rel->r_info); | |
2727 | if (r_symndx < symtab_hdr->sh_info) | |
2728 | h = NULL; | |
2729 | else | |
2730 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
2731 | ||
a33d1f77 AM |
2732 | r_type = (enum elf_ppc_reloc_type) ELF64_R_TYPE (rel->r_info); |
2733 | switch (r_type) | |
5bd4f169 AM |
2734 | { |
2735 | /* GOT16 relocations */ | |
2736 | case R_PPC64_GOT16: | |
5bd4f169 | 2737 | case R_PPC64_GOT16_DS: |
65f38f15 AM |
2738 | case R_PPC64_GOT16_HA: |
2739 | case R_PPC64_GOT16_HI: | |
2740 | case R_PPC64_GOT16_LO: | |
5bd4f169 | 2741 | case R_PPC64_GOT16_LO_DS: |
5bd4f169 | 2742 | |
65f38f15 | 2743 | /* This symbol requires a global offset table entry. */ |
82bd7b59 AM |
2744 | if (htab->sgot == NULL |
2745 | && !create_got_section (htab->elf.dynobj, info)) | |
2746 | return false; | |
5bd4f169 AM |
2747 | |
2748 | if (h != NULL) | |
2749 | { | |
65f38f15 | 2750 | h->got.refcount += 1; |
5bd4f169 AM |
2751 | } |
2752 | else | |
2753 | { | |
65f38f15 AM |
2754 | bfd_signed_vma *local_got_refcounts; |
2755 | ||
5bd4f169 | 2756 | /* This is a global offset table entry for a local symbol. */ |
65f38f15 | 2757 | local_got_refcounts = elf_local_got_refcounts (abfd); |
5bd4f169 AM |
2758 | if (local_got_refcounts == NULL) |
2759 | { | |
dc810e39 | 2760 | bfd_size_type size; |
5bd4f169 | 2761 | |
dc810e39 AM |
2762 | size = symtab_hdr->sh_info; |
2763 | size *= sizeof (bfd_signed_vma); | |
2764 | local_got_refcounts = ((bfd_signed_vma *) | |
65f38f15 | 2765 | bfd_zalloc (abfd, size)); |
5bd4f169 AM |
2766 | if (local_got_refcounts == NULL) |
2767 | return false; | |
2768 | elf_local_got_refcounts (abfd) = local_got_refcounts; | |
5bd4f169 | 2769 | } |
65f38f15 | 2770 | local_got_refcounts[r_symndx] += 1; |
5bd4f169 AM |
2771 | } |
2772 | break; | |
2773 | ||
5bd4f169 | 2774 | case R_PPC64_PLT16_HA: |
65f38f15 AM |
2775 | case R_PPC64_PLT16_HI: |
2776 | case R_PPC64_PLT16_LO: | |
2777 | case R_PPC64_PLT32: | |
2778 | case R_PPC64_PLT64: | |
5bd4f169 | 2779 | /* This symbol requires a procedure linkage table entry. We |
3fad3c7c AM |
2780 | actually build the entry in adjust_dynamic_symbol, |
2781 | because this might be a case of linking PIC code without | |
2782 | linking in any dynamic objects, in which case we don't | |
2783 | need to generate a procedure linkage table after all. */ | |
5bd4f169 AM |
2784 | if (h == NULL) |
2785 | { | |
2786 | /* It does not make sense to have a procedure linkage | |
3fad3c7c | 2787 | table entry for a local symbol. */ |
5bd4f169 AM |
2788 | bfd_set_error (bfd_error_bad_value); |
2789 | return false; | |
2790 | } | |
2791 | ||
65f38f15 AM |
2792 | h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT; |
2793 | h->plt.refcount += 1; | |
e86ce104 | 2794 | ((struct ppc_link_hash_entry *) h)->is_func = 1; |
5bd4f169 AM |
2795 | break; |
2796 | ||
2797 | /* The following relocations don't need to propagate the | |
2798 | relocation if linking a shared object since they are | |
2799 | section relative. */ | |
2800 | case R_PPC64_SECTOFF: | |
2801 | case R_PPC64_SECTOFF_LO: | |
2802 | case R_PPC64_SECTOFF_HI: | |
2803 | case R_PPC64_SECTOFF_HA: | |
2804 | case R_PPC64_SECTOFF_DS: | |
2805 | case R_PPC64_SECTOFF_LO_DS: | |
2806 | case R_PPC64_TOC16: | |
2807 | case R_PPC64_TOC16_LO: | |
2808 | case R_PPC64_TOC16_HI: | |
2809 | case R_PPC64_TOC16_HA: | |
2810 | case R_PPC64_TOC16_DS: | |
2811 | case R_PPC64_TOC16_LO_DS: | |
2812 | break; | |
2813 | ||
2814 | /* This relocation describes the C++ object vtable hierarchy. | |
2815 | Reconstruct it for later use during GC. */ | |
2816 | case R_PPC64_GNU_VTINHERIT: | |
2817 | if (!_bfd_elf64_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) | |
2818 | return false; | |
2819 | break; | |
2820 | ||
2821 | /* This relocation describes which C++ vtable entries are actually | |
2822 | used. Record for later use during GC. */ | |
2823 | case R_PPC64_GNU_VTENTRY: | |
2824 | if (!_bfd_elf64_gc_record_vtentry (abfd, sec, h, rel->r_addend)) | |
2825 | return false; | |
2826 | break; | |
2827 | ||
721956f4 AM |
2828 | case R_PPC64_REL14: |
2829 | case R_PPC64_REL14_BRTAKEN: | |
2830 | case R_PPC64_REL14_BRNTAKEN: | |
2831 | htab->has_14bit_branch = 1; | |
2832 | /* Fall through. */ | |
2833 | ||
5d1634d7 | 2834 | case R_PPC64_REL24: |
e86ce104 AM |
2835 | if (h != NULL |
2836 | && h->root.root.string[0] == '.' | |
2837 | && h->root.root.string[1] != 0) | |
5d1634d7 AM |
2838 | { |
2839 | /* We may need a .plt entry if the function this reloc | |
2840 | refers to is in a shared lib. */ | |
2841 | h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT; | |
2842 | h->plt.refcount += 1; | |
e86ce104 | 2843 | ((struct ppc_link_hash_entry *) h)->is_func = 1; |
5d1634d7 AM |
2844 | } |
2845 | break; | |
2846 | ||
e86ce104 | 2847 | case R_PPC64_ADDR64: |
1e2f5b6e | 2848 | if (opd_sym_map != NULL |
e86ce104 AM |
2849 | && h != NULL |
2850 | && h->root.root.string[0] == '.' | |
2851 | && h->root.root.string[1] != 0) | |
2852 | { | |
2853 | struct elf_link_hash_entry *fdh; | |
2854 | ||
2855 | fdh = elf_link_hash_lookup (&htab->elf, h->root.root.string + 1, | |
2856 | false, false, false); | |
2857 | if (fdh != NULL) | |
2858 | { | |
e86ce104 | 2859 | ((struct ppc_link_hash_entry *) fdh)->is_func_descriptor = 1; |
721956f4 | 2860 | ((struct ppc_link_hash_entry *) fdh)->oh = h; |
e86ce104 | 2861 | ((struct ppc_link_hash_entry *) h)->is_func = 1; |
721956f4 | 2862 | ((struct ppc_link_hash_entry *) h)->oh = fdh; |
e86ce104 AM |
2863 | } |
2864 | } | |
1e2f5b6e AM |
2865 | if (opd_sym_map != NULL |
2866 | && h == NULL | |
2867 | && rel + 1 < rel_end | |
2868 | && ((enum elf_ppc_reloc_type) ELF64_R_TYPE ((rel + 1)->r_info) | |
2869 | == R_PPC64_TOC)) | |
2870 | { | |
2871 | asection *s; | |
2872 | ||
2873 | s = bfd_section_from_r_symndx (abfd, &htab->sym_sec, sec, | |
2874 | r_symndx); | |
2875 | if (s == NULL) | |
2876 | return false; | |
2877 | else if (s != sec) | |
2878 | opd_sym_map[rel->r_offset / 24] = s; | |
2879 | } | |
e86ce104 AM |
2880 | /* Fall through. */ |
2881 | ||
5bd4f169 AM |
2882 | case R_PPC64_REL64: |
2883 | case R_PPC64_REL32: | |
65f38f15 AM |
2884 | case R_PPC64_ADDR14: |
2885 | case R_PPC64_ADDR14_BRNTAKEN: | |
2886 | case R_PPC64_ADDR14_BRTAKEN: | |
2887 | case R_PPC64_ADDR16: | |
2888 | case R_PPC64_ADDR16_DS: | |
2889 | case R_PPC64_ADDR16_HA: | |
2890 | case R_PPC64_ADDR16_HI: | |
2891 | case R_PPC64_ADDR16_HIGHER: | |
2892 | case R_PPC64_ADDR16_HIGHERA: | |
2893 | case R_PPC64_ADDR16_HIGHEST: | |
2894 | case R_PPC64_ADDR16_HIGHESTA: | |
2895 | case R_PPC64_ADDR16_LO: | |
2896 | case R_PPC64_ADDR16_LO_DS: | |
2897 | case R_PPC64_ADDR24: | |
2898 | case R_PPC64_ADDR30: | |
2899 | case R_PPC64_ADDR32: | |
65f38f15 AM |
2900 | case R_PPC64_UADDR16: |
2901 | case R_PPC64_UADDR32: | |
2902 | case R_PPC64_UADDR64: | |
5bd4f169 | 2903 | case R_PPC64_TOC: |
41bd81ab | 2904 | /* Don't propagate .opd relocs. */ |
1e2f5b6e | 2905 | if (NO_OPD_RELOCS && opd_sym_map != NULL) |
e86ce104 | 2906 | break; |
e86ce104 | 2907 | |
65f38f15 AM |
2908 | /* If we are creating a shared library, and this is a reloc |
2909 | against a global symbol, or a non PC relative reloc | |
2910 | against a local symbol, then we need to copy the reloc | |
2911 | into the shared library. However, if we are linking with | |
2912 | -Bsymbolic, we do not need to copy a reloc against a | |
2913 | global symbol which is defined in an object we are | |
2914 | including in the link (i.e., DEF_REGULAR is set). At | |
2915 | this point we have not seen all the input files, so it is | |
2916 | possible that DEF_REGULAR is not set now but will be set | |
2917 | later (it is never cleared). In case of a weak definition, | |
2918 | DEF_REGULAR may be cleared later by a strong definition in | |
2919 | a shared library. We account for that possibility below by | |
2920 | storing information in the relocs_copied field of the hash | |
2921 | table entry. A similar situation occurs when creating | |
2922 | shared libraries and symbol visibility changes render the | |
2923 | symbol local. | |
2924 | ||
2925 | If on the other hand, we are creating an executable, we | |
2926 | may need to keep relocations for symbols satisfied by a | |
2927 | dynamic library if we manage to avoid copy relocs for the | |
2928 | symbol. */ | |
2929 | if ((info->shared | |
2930 | && (sec->flags & SEC_ALLOC) != 0 | |
a33d1f77 | 2931 | && (IS_ABSOLUTE_RELOC (r_type) |
65f38f15 AM |
2932 | || (h != NULL |
2933 | && (! info->symbolic | |
2934 | || h->root.type == bfd_link_hash_defweak | |
2935 | || (h->elf_link_hash_flags | |
2936 | & ELF_LINK_HASH_DEF_REGULAR) == 0)))) | |
2937 | || (!info->shared | |
2938 | && (sec->flags & SEC_ALLOC) != 0 | |
2939 | && h != NULL | |
2940 | && (h->root.type == bfd_link_hash_defweak | |
2941 | || (h->elf_link_hash_flags | |
2942 | & ELF_LINK_HASH_DEF_REGULAR) == 0))) | |
5bd4f169 | 2943 | { |
ec338859 AM |
2944 | struct ppc_dyn_relocs *p; |
2945 | struct ppc_dyn_relocs **head; | |
2946 | ||
65f38f15 AM |
2947 | /* We must copy these reloc types into the output file. |
2948 | Create a reloc section in dynobj and make room for | |
2949 | this reloc. */ | |
5bd4f169 AM |
2950 | if (sreloc == NULL) |
2951 | { | |
2952 | const char *name; | |
65f38f15 | 2953 | bfd *dynobj; |
5bd4f169 AM |
2954 | |
2955 | name = (bfd_elf_string_from_elf_section | |
2956 | (abfd, | |
2957 | elf_elfheader (abfd)->e_shstrndx, | |
2958 | elf_section_data (sec)->rel_hdr.sh_name)); | |
2959 | if (name == NULL) | |
2960 | return false; | |
2961 | ||
65f38f15 AM |
2962 | if (strncmp (name, ".rela", 5) != 0 |
2963 | || strcmp (bfd_get_section_name (abfd, sec), | |
2964 | name + 5) != 0) | |
2965 | { | |
2966 | (*_bfd_error_handler) | |
2967 | (_("%s: bad relocation section name `%s\'"), | |
2968 | bfd_archive_filename (abfd), name); | |
5d1634d7 | 2969 | bfd_set_error (bfd_error_bad_value); |
65f38f15 AM |
2970 | } |
2971 | ||
65f38f15 | 2972 | dynobj = htab->elf.dynobj; |
5bd4f169 AM |
2973 | sreloc = bfd_get_section_by_name (dynobj, name); |
2974 | if (sreloc == NULL) | |
2975 | { | |
2976 | flagword flags; | |
2977 | ||
2978 | sreloc = bfd_make_section (dynobj, name); | |
2979 | flags = (SEC_HAS_CONTENTS | SEC_READONLY | |
2980 | | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
2981 | if ((sec->flags & SEC_ALLOC) != 0) | |
2982 | flags |= SEC_ALLOC | SEC_LOAD; | |
2983 | if (sreloc == NULL | |
2984 | || ! bfd_set_section_flags (dynobj, sreloc, flags) | |
65f38f15 | 2985 | || ! bfd_set_section_alignment (dynobj, sreloc, 3)) |
5bd4f169 AM |
2986 | return false; |
2987 | } | |
65f38f15 | 2988 | elf_section_data (sec)->sreloc = sreloc; |
5bd4f169 AM |
2989 | } |
2990 | ||
65f38f15 AM |
2991 | /* If this is a global symbol, we count the number of |
2992 | relocations we need for this symbol. */ | |
2993 | if (h != NULL) | |
2994 | { | |
ec338859 | 2995 | head = &((struct ppc_link_hash_entry *) h)->dyn_relocs; |
65f38f15 AM |
2996 | } |
2997 | else | |
2998 | { | |
ec338859 AM |
2999 | /* Track dynamic relocs needed for local syms too. |
3000 | We really need local syms available to do this | |
3001 | easily. Oh well. */ | |
3002 | ||
3003 | asection *s; | |
3004 | s = bfd_section_from_r_symndx (abfd, &htab->sym_sec, | |
3005 | sec, r_symndx); | |
3006 | if (s == NULL) | |
3007 | return false; | |
3008 | ||
3009 | head = ((struct ppc_dyn_relocs **) | |
3010 | &elf_section_data (s)->local_dynrel); | |
65f38f15 | 3011 | } |
ec338859 AM |
3012 | |
3013 | p = *head; | |
3014 | if (p == NULL || p->sec != sec) | |
3015 | { | |
3016 | p = ((struct ppc_dyn_relocs *) | |
3017 | bfd_alloc (htab->elf.dynobj, | |
3018 | (bfd_size_type) sizeof *p)); | |
3019 | if (p == NULL) | |
3020 | return false; | |
3021 | p->next = *head; | |
3022 | *head = p; | |
3023 | p->sec = sec; | |
3024 | p->count = 0; | |
3025 | p->pc_count = 0; | |
3026 | } | |
3027 | ||
3028 | p->count += 1; | |
3029 | if (!IS_ABSOLUTE_RELOC (r_type)) | |
3030 | p->pc_count += 1; | |
65f38f15 | 3031 | } |
5bd4f169 | 3032 | break; |
65f38f15 AM |
3033 | |
3034 | default: | |
96e0dda4 | 3035 | break; |
5bd4f169 AM |
3036 | } |
3037 | } | |
3038 | ||
3039 | return true; | |
3040 | } | |
3041 | ||
3042 | /* Return the section that should be marked against GC for a given | |
3043 | relocation. */ | |
3044 | ||
3045 | static asection * | |
1e2f5b6e AM |
3046 | ppc64_elf_gc_mark_hook (sec, info, rel, h, sym) |
3047 | asection *sec; | |
5bd4f169 AM |
3048 | struct bfd_link_info *info ATTRIBUTE_UNUSED; |
3049 | Elf_Internal_Rela *rel; | |
3050 | struct elf_link_hash_entry *h; | |
3051 | Elf_Internal_Sym *sym; | |
3052 | { | |
1e2f5b6e AM |
3053 | asection *rsec = NULL; |
3054 | ||
5bd4f169 AM |
3055 | if (h != NULL) |
3056 | { | |
a33d1f77 | 3057 | enum elf_ppc_reloc_type r_type; |
1e2f5b6e | 3058 | struct ppc_link_hash_entry *fdh; |
a33d1f77 AM |
3059 | |
3060 | r_type = (enum elf_ppc_reloc_type) ELF64_R_TYPE (rel->r_info); | |
3061 | switch (r_type) | |
5bd4f169 AM |
3062 | { |
3063 | case R_PPC64_GNU_VTINHERIT: | |
3064 | case R_PPC64_GNU_VTENTRY: | |
3065 | break; | |
3066 | ||
3067 | default: | |
3068 | switch (h->root.type) | |
3069 | { | |
3070 | case bfd_link_hash_defined: | |
3071 | case bfd_link_hash_defweak: | |
1e2f5b6e AM |
3072 | fdh = (struct ppc_link_hash_entry *) h; |
3073 | ||
3074 | /* Function descriptor syms cause the associated | |
3075 | function code sym section to be marked. */ | |
3076 | if (fdh->is_func_descriptor) | |
3077 | rsec = fdh->oh->root.u.def.section; | |
3078 | ||
3079 | /* Function entry syms return NULL if they are in .opd | |
3080 | and are not ._start (or others undefined on the ld | |
3081 | command line). Thus we avoid marking all function | |
3082 | sections, as all functions are referenced in .opd. */ | |
3083 | else if ((fdh->oh != NULL | |
3084 | && ((struct ppc_link_hash_entry *) fdh->oh)->is_entry) | |
3085 | || elf_section_data (sec)->tdata == NULL) | |
3086 | rsec = h->root.u.def.section; | |
3087 | break; | |
5bd4f169 AM |
3088 | |
3089 | case bfd_link_hash_common: | |
1e2f5b6e AM |
3090 | rsec = h->root.u.c.p->section; |
3091 | break; | |
5bd4f169 AM |
3092 | |
3093 | default: | |
3094 | break; | |
3095 | } | |
3096 | } | |
3097 | } | |
3098 | else | |
3099 | { | |
1e2f5b6e AM |
3100 | asection **opd_sym_section; |
3101 | ||
3102 | rsec = bfd_section_from_elf_index (sec->owner, sym->st_shndx); | |
3103 | opd_sym_section = (asection **) elf_section_data (rsec)->tdata; | |
3104 | if (opd_sym_section != NULL) | |
3105 | rsec = opd_sym_section[sym->st_value / 24]; | |
3106 | else if (elf_section_data (sec)->tdata != NULL) | |
3107 | rsec = NULL; | |
5bd4f169 AM |
3108 | } |
3109 | ||
1e2f5b6e | 3110 | return rsec; |
5bd4f169 AM |
3111 | } |
3112 | ||
65f38f15 AM |
3113 | /* Update the .got, .plt. and dynamic reloc reference counts for the |
3114 | section being removed. */ | |
5bd4f169 AM |
3115 | |
3116 | static boolean | |
3117 | ppc64_elf_gc_sweep_hook (abfd, info, sec, relocs) | |
3118 | bfd *abfd; | |
3119 | struct bfd_link_info *info ATTRIBUTE_UNUSED; | |
3120 | asection *sec; | |
3121 | const Elf_Internal_Rela *relocs; | |
3122 | { | |
3123 | Elf_Internal_Shdr *symtab_hdr; | |
3124 | struct elf_link_hash_entry **sym_hashes; | |
3125 | bfd_signed_vma *local_got_refcounts; | |
3126 | const Elf_Internal_Rela *rel, *relend; | |
5bd4f169 | 3127 | |
ec338859 AM |
3128 | elf_section_data (sec)->local_dynrel = NULL; |
3129 | ||
5bd4f169 AM |
3130 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
3131 | sym_hashes = elf_sym_hashes (abfd); | |
3132 | local_got_refcounts = elf_local_got_refcounts (abfd); | |
3133 | ||
3134 | relend = relocs + sec->reloc_count; | |
3135 | for (rel = relocs; rel < relend; rel++) | |
a33d1f77 AM |
3136 | { |
3137 | unsigned long r_symndx; | |
3138 | enum elf_ppc_reloc_type r_type; | |
3139 | struct elf_link_hash_entry *h; | |
5bd4f169 | 3140 | |
a33d1f77 AM |
3141 | r_symndx = ELF64_R_SYM (rel->r_info); |
3142 | r_type = (enum elf_ppc_reloc_type) ELF64_R_TYPE (rel->r_info); | |
3143 | switch (r_type) | |
3144 | { | |
3145 | case R_PPC64_GOT16: | |
3146 | case R_PPC64_GOT16_DS: | |
3147 | case R_PPC64_GOT16_HA: | |
3148 | case R_PPC64_GOT16_HI: | |
3149 | case R_PPC64_GOT16_LO: | |
3150 | case R_PPC64_GOT16_LO_DS: | |
3151 | if (r_symndx >= symtab_hdr->sh_info) | |
3152 | { | |
3153 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
3154 | if (h->got.refcount > 0) | |
3155 | h->got.refcount--; | |
3156 | } | |
3157 | else | |
3158 | { | |
3159 | if (local_got_refcounts[r_symndx] > 0) | |
3160 | local_got_refcounts[r_symndx]--; | |
3161 | } | |
3162 | break; | |
65f38f15 | 3163 | |
a33d1f77 AM |
3164 | case R_PPC64_PLT16_HA: |
3165 | case R_PPC64_PLT16_HI: | |
3166 | case R_PPC64_PLT16_LO: | |
3167 | case R_PPC64_PLT32: | |
3168 | case R_PPC64_PLT64: | |
3169 | if (r_symndx >= symtab_hdr->sh_info) | |
3170 | { | |
3171 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
3172 | if (h->plt.refcount > 0) | |
3173 | h->plt.refcount--; | |
3174 | } | |
3175 | break; | |
65f38f15 | 3176 | |
721956f4 AM |
3177 | case R_PPC64_REL14: |
3178 | case R_PPC64_REL14_BRNTAKEN: | |
3179 | case R_PPC64_REL14_BRTAKEN: | |
5d1634d7 AM |
3180 | case R_PPC64_REL24: |
3181 | if (r_symndx >= symtab_hdr->sh_info) | |
3182 | { | |
3183 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
3184 | if (h->plt.refcount > 0) | |
3185 | h->plt.refcount--; | |
3186 | } | |
e86ce104 | 3187 | break; |
5d1634d7 | 3188 | |
a33d1f77 AM |
3189 | case R_PPC64_REL32: |
3190 | case R_PPC64_REL64: | |
3191 | if (r_symndx >= symtab_hdr->sh_info) | |
3192 | { | |
3193 | struct ppc_link_hash_entry *eh; | |
3194 | struct ppc_dyn_relocs **pp; | |
3195 | struct ppc_dyn_relocs *p; | |
65f38f15 | 3196 | |
a33d1f77 AM |
3197 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; |
3198 | eh = (struct ppc_link_hash_entry *) h; | |
65f38f15 | 3199 | |
a33d1f77 AM |
3200 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next) |
3201 | if (p->sec == sec) | |
3202 | { | |
3203 | p->pc_count -= 1; | |
3204 | p->count -= 1; | |
3205 | if (p->count == 0) | |
3206 | *pp = p->next; | |
3207 | break; | |
3208 | } | |
3209 | } | |
3210 | break; | |
65f38f15 | 3211 | |
a33d1f77 AM |
3212 | case R_PPC64_ADDR14: |
3213 | case R_PPC64_ADDR14_BRNTAKEN: | |
3214 | case R_PPC64_ADDR14_BRTAKEN: | |
3215 | case R_PPC64_ADDR16: | |
3216 | case R_PPC64_ADDR16_DS: | |
3217 | case R_PPC64_ADDR16_HA: | |
3218 | case R_PPC64_ADDR16_HI: | |
3219 | case R_PPC64_ADDR16_HIGHER: | |
3220 | case R_PPC64_ADDR16_HIGHERA: | |
3221 | case R_PPC64_ADDR16_HIGHEST: | |
3222 | case R_PPC64_ADDR16_HIGHESTA: | |
3223 | case R_PPC64_ADDR16_LO: | |
3224 | case R_PPC64_ADDR16_LO_DS: | |
3225 | case R_PPC64_ADDR24: | |
3226 | case R_PPC64_ADDR30: | |
3227 | case R_PPC64_ADDR32: | |
3228 | case R_PPC64_ADDR64: | |
3229 | case R_PPC64_UADDR16: | |
3230 | case R_PPC64_UADDR32: | |
3231 | case R_PPC64_UADDR64: | |
3232 | case R_PPC64_TOC: | |
3233 | if (r_symndx >= symtab_hdr->sh_info) | |
3234 | { | |
3235 | struct ppc_link_hash_entry *eh; | |
3236 | struct ppc_dyn_relocs **pp; | |
3237 | struct ppc_dyn_relocs *p; | |
65f38f15 | 3238 | |
a33d1f77 AM |
3239 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; |
3240 | eh = (struct ppc_link_hash_entry *) h; | |
3241 | ||
3242 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next) | |
3243 | if (p->sec == sec) | |
3244 | { | |
3245 | p->count -= 1; | |
3246 | if (p->count == 0) | |
3247 | *pp = p->next; | |
3248 | break; | |
3249 | } | |
3250 | } | |
3251 | break; | |
5bd4f169 | 3252 | |
a33d1f77 AM |
3253 | default: |
3254 | break; | |
3255 | } | |
3256 | } | |
5bd4f169 AM |
3257 | return true; |
3258 | } | |
3259 | ||
e86ce104 AM |
3260 | /* Called via elf_link_hash_traverse to transfer dynamic linking |
3261 | information on function code symbol entries to their corresponding | |
3262 | function descriptor symbol entries. */ | |
5bd4f169 | 3263 | static boolean |
e86ce104 | 3264 | func_desc_adjust (h, inf) |
5bd4f169 | 3265 | struct elf_link_hash_entry *h; |
e86ce104 | 3266 | PTR inf; |
5bd4f169 | 3267 | { |
e86ce104 | 3268 | struct bfd_link_info *info; |
65f38f15 | 3269 | struct ppc_link_hash_table *htab; |
5bd4f169 | 3270 | |
e92d460e | 3271 | if (h->root.type == bfd_link_hash_indirect) |
e86ce104 AM |
3272 | return true; |
3273 | ||
e92d460e AM |
3274 | if (h->root.type == bfd_link_hash_warning) |
3275 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
3276 | ||
e86ce104 | 3277 | info = (struct bfd_link_info *) inf; |
65f38f15 | 3278 | htab = ppc_hash_table (info); |
5bd4f169 | 3279 | |
e86ce104 AM |
3280 | /* If this is a function code symbol, transfer dynamic linking |
3281 | information to the function descriptor symbol. */ | |
3282 | if (!((struct ppc_link_hash_entry *) h)->is_func) | |
3283 | return true; | |
3284 | ||
805fc799 AM |
3285 | if (h->root.type == bfd_link_hash_undefweak |
3286 | && (h->elf_link_hash_flags & ELF_LINK_HASH_REF_REGULAR)) | |
3287 | htab->have_undefweak = true; | |
3288 | ||
e86ce104 AM |
3289 | if (h->plt.refcount > 0 |
3290 | && h->root.root.string[0] == '.' | |
3291 | && h->root.root.string[1] != '\0') | |
5bd4f169 | 3292 | { |
721956f4 | 3293 | struct elf_link_hash_entry *fdh = ((struct ppc_link_hash_entry *) h)->oh; |
e86ce104 | 3294 | boolean force_local; |
5bd4f169 | 3295 | |
648cca2c AM |
3296 | /* Find the corresponding function descriptor symbol. Create it |
3297 | as undefined if necessary. */ | |
5bd4f169 | 3298 | |
721956f4 AM |
3299 | if (fdh == NULL) |
3300 | fdh = elf_link_hash_lookup (&htab->elf, h->root.root.string + 1, | |
3301 | false, false, true); | |
5bd4f169 | 3302 | |
d926e03d AM |
3303 | if (fdh == NULL |
3304 | && info->shared | |
3305 | && (h->root.type == bfd_link_hash_undefined | |
3306 | || h->root.type == bfd_link_hash_undefweak)) | |
648cca2c AM |
3307 | { |
3308 | bfd *abfd; | |
3309 | asymbol *newsym; | |
3310 | ||
d926e03d | 3311 | abfd = h->root.u.undef.abfd; |
648cca2c AM |
3312 | newsym = bfd_make_empty_symbol (abfd); |
3313 | newsym->name = h->root.root.string + 1; | |
3314 | newsym->section = bfd_und_section_ptr; | |
3315 | newsym->value = 0; | |
3316 | newsym->flags = BSF_OBJECT; | |
3317 | if (h->root.type == bfd_link_hash_undefweak) | |
3318 | newsym->flags |= BSF_WEAK; | |
3319 | ||
3320 | if ( !(_bfd_generic_link_add_one_symbol | |
3321 | (info, abfd, newsym->name, newsym->flags, | |
3322 | newsym->section, newsym->value, NULL, false, false, | |
3323 | (struct bfd_link_hash_entry **) &fdh))) | |
3324 | { | |
3325 | return false; | |
3326 | } | |
d926e03d | 3327 | fdh->elf_link_hash_flags &= ~ELF_LINK_NON_ELF; |
648cca2c AM |
3328 | } |
3329 | ||
e86ce104 AM |
3330 | if (fdh != NULL |
3331 | && (fdh->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0 | |
3332 | && (info->shared | |
3333 | || (fdh->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0 | |
3334 | || (fdh->elf_link_hash_flags & ELF_LINK_HASH_REF_DYNAMIC) != 0)) | |
3335 | { | |
3336 | if (fdh->dynindx == -1) | |
3337 | if (! bfd_elf64_link_record_dynamic_symbol (info, fdh)) | |
3338 | return false; | |
e86ce104 AM |
3339 | fdh->elf_link_hash_flags |= (h->elf_link_hash_flags |
3340 | & (ELF_LINK_HASH_REF_REGULAR | |
3341 | | ELF_LINK_HASH_REF_DYNAMIC | |
3342 | | ELF_LINK_HASH_REF_REGULAR_NONWEAK | |
3343 | | ELF_LINK_NON_GOT_REF)); | |
e1fa50e7 AM |
3344 | if (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT) |
3345 | { | |
3346 | fdh->plt.refcount = h->plt.refcount; | |
3347 | fdh->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT; | |
3348 | } | |
e86ce104 | 3349 | ((struct ppc_link_hash_entry *) fdh)->is_func_descriptor = 1; |
721956f4 | 3350 | ((struct ppc_link_hash_entry *) fdh)->oh = h; |
721956f4 | 3351 | ((struct ppc_link_hash_entry *) h)->oh = fdh; |
e86ce104 AM |
3352 | } |
3353 | ||
3354 | /* Now that the info is on the function descriptor, clear the | |
3355 | function code sym info. Any function code syms for which we | |
3356 | don't have a definition in a regular file, we force local. | |
3357 | This prevents a shared library from exporting syms that have | |
3358 | been imported from another library. Function code syms that | |
3359 | are really in the library we must leave global to prevent the | |
e1fa50e7 | 3360 | linker dragging in a definition from a static library. */ |
ea1e4b0d AM |
3361 | force_local = (info->shared |
3362 | && ((h->elf_link_hash_flags | |
3363 | & ELF_LINK_HASH_DEF_REGULAR) == 0 | |
3364 | || fdh == NULL | |
3365 | || (fdh->elf_link_hash_flags | |
3366 | & ELF_LINK_HASH_DEF_REGULAR) == 0 | |
3367 | || (fdh->elf_link_hash_flags | |
3368 | & ELF_LINK_FORCED_LOCAL) != 0)); | |
e86ce104 AM |
3369 | _bfd_elf_link_hash_hide_symbol (info, h, force_local); |
3370 | } | |
3371 | ||
3372 | return true; | |
3373 | } | |
40b8271b | 3374 | |
82bd7b59 AM |
3375 | #define MIN_SAVE_FPR 14 |
3376 | #define MAX_SAVE_FPR 31 | |
3377 | ||
e86ce104 | 3378 | /* Called near the start of bfd_elf_size_dynamic_sections. We use |
82bd7b59 AM |
3379 | this hook to a) provide some gcc support functions, and b) transfer |
3380 | dynamic linking information gathered so far on function code symbol | |
3381 | entries, to their corresponding function descriptor symbol entries. */ | |
e86ce104 AM |
3382 | static boolean |
3383 | ppc64_elf_func_desc_adjust (obfd, info) | |
3384 | bfd *obfd ATTRIBUTE_UNUSED; | |
3385 | struct bfd_link_info *info; | |
3386 | { | |
3387 | struct ppc_link_hash_table *htab; | |
82bd7b59 AM |
3388 | unsigned int lowest_savef = MAX_SAVE_FPR + 2; |
3389 | unsigned int lowest_restf = MAX_SAVE_FPR + 2; | |
3390 | unsigned int i; | |
3391 | struct elf_link_hash_entry *h; | |
721956f4 | 3392 | bfd_byte *p; |
82bd7b59 | 3393 | char sym[10]; |
e86ce104 AM |
3394 | |
3395 | htab = ppc_hash_table (info); | |
82bd7b59 AM |
3396 | |
3397 | if (htab->sfpr == NULL) | |
3398 | /* We don't have any relocs. */ | |
3399 | return true; | |
3400 | ||
3401 | /* First provide any missing ._savef* and ._restf* functions. */ | |
3402 | memcpy (sym, "._savef14", 10); | |
3403 | for (i = MIN_SAVE_FPR; i <= MAX_SAVE_FPR; i++) | |
3404 | { | |
3405 | sym[7] = i / 10 + '0'; | |
3406 | sym[8] = i % 10 + '0'; | |
3407 | h = elf_link_hash_lookup (&htab->elf, sym, false, false, true); | |
3408 | if (h != NULL | |
3409 | && h->root.type == bfd_link_hash_undefined) | |
3410 | { | |
3411 | if (lowest_savef > i) | |
3412 | lowest_savef = i; | |
3413 | h->root.type = bfd_link_hash_defined; | |
3414 | h->root.u.def.section = htab->sfpr; | |
3415 | h->root.u.def.value = (i - lowest_savef) * 4; | |
3416 | h->type = STT_FUNC; | |
3417 | h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR; | |
3418 | _bfd_elf_link_hash_hide_symbol (info, h, info->shared); | |
3419 | } | |
3420 | } | |
3421 | ||
3422 | memcpy (sym, "._restf14", 10); | |
3423 | for (i = MIN_SAVE_FPR; i <= MAX_SAVE_FPR; i++) | |
3424 | { | |
3425 | sym[7] = i / 10 + '0'; | |
3426 | sym[8] = i % 10 + '0'; | |
3427 | h = elf_link_hash_lookup (&htab->elf, sym, false, false, true); | |
3428 | if (h != NULL | |
3429 | && h->root.type == bfd_link_hash_undefined) | |
3430 | { | |
3431 | if (lowest_restf > i) | |
3432 | lowest_restf = i; | |
3433 | h->root.type = bfd_link_hash_defined; | |
3434 | h->root.u.def.section = htab->sfpr; | |
3435 | h->root.u.def.value = ((MAX_SAVE_FPR + 2 - lowest_savef) * 4 | |
3436 | + (i - lowest_restf) * 4); | |
3437 | h->type = STT_FUNC; | |
3438 | h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR; | |
3439 | _bfd_elf_link_hash_hide_symbol (info, h, info->shared); | |
3440 | } | |
3441 | } | |
3442 | ||
805fc799 AM |
3443 | elf_link_hash_traverse (&htab->elf, func_desc_adjust, (PTR) info); |
3444 | ||
82bd7b59 AM |
3445 | htab->sfpr->_raw_size = ((MAX_SAVE_FPR + 2 - lowest_savef) * 4 |
3446 | + (MAX_SAVE_FPR + 2 - lowest_restf) * 4); | |
3447 | ||
3448 | if (htab->sfpr->_raw_size == 0) | |
805fc799 AM |
3449 | { |
3450 | if (!htab->have_undefweak) | |
3451 | { | |
3452 | _bfd_strip_section_from_output (info, htab->sfpr); | |
3453 | return true; | |
3454 | } | |
3455 | ||
3456 | htab->sfpr->_raw_size = 4; | |
3457 | } | |
82bd7b59 | 3458 | |
721956f4 AM |
3459 | p = (bfd_byte *) bfd_alloc (htab->elf.dynobj, htab->sfpr->_raw_size); |
3460 | if (p == NULL) | |
3461 | return false; | |
3462 | htab->sfpr->contents = p; | |
3463 | ||
3464 | for (i = lowest_savef; i <= MAX_SAVE_FPR; i++) | |
3465 | { | |
3466 | unsigned int fpr = i << 21; | |
3467 | unsigned int stackoff = (1 << 16) - (MAX_SAVE_FPR + 1 - i) * 8; | |
3468 | bfd_put_32 (htab->elf.dynobj, STFD_FR0_0R1 + fpr + stackoff, p); | |
3469 | p += 4; | |
3470 | } | |
3471 | if (lowest_savef <= MAX_SAVE_FPR) | |
3472 | { | |
82bd7b59 AM |
3473 | bfd_put_32 (htab->elf.dynobj, BLR, p); |
3474 | p += 4; | |
721956f4 | 3475 | } |
82bd7b59 | 3476 | |
721956f4 AM |
3477 | for (i = lowest_restf; i <= MAX_SAVE_FPR; i++) |
3478 | { | |
3479 | unsigned int fpr = i << 21; | |
3480 | unsigned int stackoff = (1 << 16) - (MAX_SAVE_FPR + 1 - i) * 8; | |
3481 | bfd_put_32 (htab->elf.dynobj, LFD_FR0_0R1 + fpr + stackoff, p); | |
82bd7b59 AM |
3482 | p += 4; |
3483 | } | |
721956f4 AM |
3484 | if (lowest_restf <= MAX_SAVE_FPR |
3485 | || htab->sfpr->_raw_size == 4) | |
3486 | { | |
3487 | bfd_put_32 (htab->elf.dynobj, BLR, p); | |
3488 | } | |
82bd7b59 | 3489 | |
e86ce104 AM |
3490 | return true; |
3491 | } | |
3492 | ||
3493 | /* Adjust a symbol defined by a dynamic object and referenced by a | |
3494 | regular object. The current definition is in some section of the | |
3495 | dynamic object, but we're not including those sections. We have to | |
3496 | change the definition to something the rest of the link can | |
3497 | understand. */ | |
3498 | ||
3499 | static boolean | |
3500 | ppc64_elf_adjust_dynamic_symbol (info, h) | |
3501 | struct bfd_link_info *info; | |
3502 | struct elf_link_hash_entry *h; | |
3503 | { | |
3504 | struct ppc_link_hash_table *htab; | |
3505 | struct ppc_link_hash_entry * eh; | |
3506 | struct ppc_dyn_relocs *p; | |
3507 | asection *s; | |
3508 | unsigned int power_of_two; | |
3509 | ||
3510 | htab = ppc_hash_table (info); | |
3511 | ||
3512 | /* Deal with function syms. */ | |
3513 | if (h->type == STT_FUNC | |
3514 | || (h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0) | |
3515 | { | |
3516 | /* Clear procedure linkage table information for any symbol that | |
3517 | won't need a .plt entry. */ | |
3518 | if (!((struct ppc_link_hash_entry *) h)->is_func_descriptor | |
3519 | || h->plt.refcount <= 0 | |
3520 | || (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0 | |
3521 | || (! info->shared | |
3522 | && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) == 0 | |
3523 | && (h->elf_link_hash_flags & ELF_LINK_HASH_REF_DYNAMIC) == 0)) | |
40b8271b | 3524 | { |
40b8271b AM |
3525 | h->plt.offset = (bfd_vma) -1; |
3526 | h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT; | |
40b8271b | 3527 | } |
5bd4f169 AM |
3528 | return true; |
3529 | } | |
bbd7ec4a AM |
3530 | else |
3531 | h->plt.offset = (bfd_vma) -1; | |
5bd4f169 AM |
3532 | |
3533 | /* If this is a weak symbol, and there is a real definition, the | |
3534 | processor independent code will have arranged for us to see the | |
3535 | real definition first, and we can just use the same value. */ | |
3536 | if (h->weakdef != NULL) | |
3537 | { | |
3538 | BFD_ASSERT (h->weakdef->root.type == bfd_link_hash_defined | |
3539 | || h->weakdef->root.type == bfd_link_hash_defweak); | |
3540 | h->root.u.def.section = h->weakdef->root.u.def.section; | |
3541 | h->root.u.def.value = h->weakdef->root.u.def.value; | |
0a991dfe | 3542 | return true; |
5bd4f169 AM |
3543 | } |
3544 | ||
3545 | /* This is a reference to a symbol defined by a dynamic object which | |
3546 | is not a function. */ | |
3547 | ||
3548 | /* If we are creating a shared library, we must presume that the | |
3549 | only references to the symbol are via the global offset table. | |
3550 | For such cases we need not do anything here; the relocations will | |
3551 | be handled correctly by relocate_section. */ | |
3552 | if (info->shared) | |
3553 | return true; | |
3554 | ||
65f38f15 AM |
3555 | /* If there are no references to this symbol that do not use the |
3556 | GOT, we don't need to generate a copy reloc. */ | |
3557 | if ((h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0) | |
3558 | return true; | |
3559 | ||
3560 | eh = (struct ppc_link_hash_entry *) h; | |
3561 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
3562 | { | |
3563 | s = p->sec->output_section; | |
3564 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
3565 | break; | |
3566 | } | |
3567 | ||
3568 | /* If we didn't find any dynamic relocs in read-only sections, then | |
5d1634d7 | 3569 | we'll be keeping the dynamic relocs and avoiding the copy reloc. */ |
65f38f15 AM |
3570 | if (p == NULL) |
3571 | { | |
3572 | h->elf_link_hash_flags &= ~ELF_LINK_NON_GOT_REF; | |
3573 | return true; | |
3574 | } | |
3575 | ||
5bd4f169 AM |
3576 | /* We must allocate the symbol in our .dynbss section, which will |
3577 | become part of the .bss section of the executable. There will be | |
3578 | an entry for this symbol in the .dynsym section. The dynamic | |
3579 | object will contain position independent code, so all references | |
3580 | from the dynamic object to this symbol will go through the global | |
3581 | offset table. The dynamic linker will use the .dynsym entry to | |
3582 | determine the address it must put in the global offset table, so | |
3583 | both the dynamic object and the regular object will refer to the | |
3584 | same memory location for the variable. */ | |
5bd4f169 AM |
3585 | |
3586 | /* We must generate a R_PPC_COPY reloc to tell the dynamic linker to | |
3587 | copy the initial value out of the dynamic object and into the | |
3588 | runtime process image. We need to remember the offset into the | |
3589 | .rela.bss section we are going to use. */ | |
3590 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0) | |
3591 | { | |
65f38f15 | 3592 | htab->srelbss->_raw_size += sizeof (Elf64_External_Rela); |
5bd4f169 AM |
3593 | h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_COPY; |
3594 | } | |
3595 | ||
3596 | /* We need to figure out the alignment required for this symbol. I | |
3597 | have no idea how ELF linkers handle this. */ | |
3598 | power_of_two = bfd_log2 (h->size); | |
3599 | if (power_of_two > 4) | |
3600 | power_of_two = 4; | |
3601 | ||
3602 | /* Apply the required alignment. */ | |
65f38f15 AM |
3603 | s = htab->sdynbss; |
3604 | s->_raw_size = BFD_ALIGN (s->_raw_size, (bfd_size_type) (1 << power_of_two)); | |
3605 | if (power_of_two > bfd_get_section_alignment (htab->elf.dynobj, s)) | |
5bd4f169 | 3606 | { |
65f38f15 | 3607 | if (! bfd_set_section_alignment (htab->elf.dynobj, s, power_of_two)) |
5bd4f169 AM |
3608 | return false; |
3609 | } | |
3610 | ||
3611 | /* Define the symbol as being at this point in the section. */ | |
3612 | h->root.u.def.section = s; | |
3613 | h->root.u.def.value = s->_raw_size; | |
3614 | ||
3615 | /* Increment the section size to make room for the symbol. */ | |
3616 | s->_raw_size += h->size; | |
3617 | ||
3618 | return true; | |
3619 | } | |
3620 | ||
e86ce104 AM |
3621 | /* If given a function descriptor symbol, hide both the function code |
3622 | sym and the descriptor. */ | |
3623 | static void | |
3624 | ppc64_elf_hide_symbol (info, h, force_local) | |
3625 | struct bfd_link_info *info; | |
3626 | struct elf_link_hash_entry *h; | |
3627 | boolean force_local; | |
3628 | { | |
3629 | _bfd_elf_link_hash_hide_symbol (info, h, force_local); | |
3630 | ||
3631 | if (((struct ppc_link_hash_entry *) h)->is_func_descriptor) | |
3632 | { | |
721956f4 | 3633 | struct elf_link_hash_entry *fh = ((struct ppc_link_hash_entry *) h)->oh; |
e86ce104 | 3634 | |
721956f4 | 3635 | if (fh == NULL) |
d1329ca3 AM |
3636 | { |
3637 | const char *p, *q; | |
3638 | struct ppc_link_hash_table *htab; | |
3639 | char save; | |
3640 | ||
3641 | /* We aren't supposed to use alloca in BFD because on | |
3642 | systems which do not have alloca the version in libiberty | |
3643 | calls xmalloc, which might cause the program to crash | |
3644 | when it runs out of memory. This function doesn't have a | |
3645 | return status, so there's no way to gracefully return an | |
3646 | error. So cheat. We know that string[-1] can be safely | |
3647 | dereferenced; It's either a string in an ELF string | |
3648 | table, or allocated in an objalloc structure. */ | |
3649 | ||
3650 | p = h->root.root.string - 1; | |
3651 | save = *p; | |
3652 | *(char *) p = '.'; | |
3653 | htab = ppc_hash_table (info); | |
3654 | fh = elf_link_hash_lookup (&htab->elf, p, false, false, false); | |
3655 | *(char *) p = save; | |
3656 | ||
3657 | /* Unfortunately, if it so happens that the string we were | |
3658 | looking for was allocated immediately before this string, | |
3659 | then we overwrote the string terminator. That's the only | |
3660 | reason the lookup should fail. */ | |
3661 | if (fh == NULL) | |
3662 | { | |
3663 | q = h->root.root.string + strlen (h->root.root.string); | |
3664 | while (q >= h->root.root.string && *q == *p) | |
3665 | --q, --p; | |
3666 | if (q < h->root.root.string && *p == '.') | |
3667 | fh = elf_link_hash_lookup (&htab->elf, p, false, false, false); | |
3668 | } | |
3669 | if (fh != NULL) | |
3670 | { | |
3671 | ((struct ppc_link_hash_entry *) h)->oh = fh; | |
3672 | ((struct ppc_link_hash_entry *) fh)->oh = h; | |
3673 | } | |
3674 | } | |
e86ce104 AM |
3675 | if (fh != NULL) |
3676 | _bfd_elf_link_hash_hide_symbol (info, fh, force_local); | |
3677 | } | |
3678 | } | |
3679 | ||
1e2f5b6e AM |
3680 | static boolean |
3681 | edit_opd (obfd, info) | |
3682 | bfd *obfd; | |
3683 | struct bfd_link_info *info; | |
3684 | { | |
3685 | bfd *ibfd; | |
3686 | unsigned int bfd_indx; | |
1e2f5b6e AM |
3687 | |
3688 | for (bfd_indx = 0, ibfd = info->input_bfds; | |
3689 | ibfd != NULL; | |
3690 | ibfd = ibfd->link_next, bfd_indx++) | |
3691 | { | |
3692 | asection *sec; | |
3693 | Elf_Internal_Rela *relstart, *rel, *relend; | |
3694 | Elf_Internal_Shdr *symtab_hdr; | |
6cdc0ccc | 3695 | Elf_Internal_Sym *local_syms; |
1e2f5b6e AM |
3696 | struct elf_link_hash_entry **sym_hashes; |
3697 | bfd_vma offset; | |
3698 | long *adjust; | |
3699 | boolean need_edit; | |
3700 | ||
3701 | sec = bfd_get_section_by_name (ibfd, ".opd"); | |
3702 | if (sec == NULL) | |
3703 | continue; | |
3704 | ||
3705 | adjust = (long *) elf_section_data (sec)->tdata; | |
3706 | BFD_ASSERT (adjust != NULL); | |
3707 | memset (adjust, 0, (size_t) sec->_raw_size * sizeof (long) / 24); | |
3708 | ||
3709 | if (sec->output_section == bfd_abs_section_ptr) | |
3710 | continue; | |
3711 | ||
3712 | /* Look through the section relocs. */ | |
3713 | if ((sec->flags & SEC_RELOC) == 0 || sec->reloc_count == 0) | |
3714 | continue; | |
3715 | ||
6cdc0ccc | 3716 | local_syms = NULL; |
1e2f5b6e AM |
3717 | symtab_hdr = &elf_tdata (ibfd)->symtab_hdr; |
3718 | sym_hashes = elf_sym_hashes (ibfd); | |
3719 | ||
3720 | /* Read the relocations. */ | |
3721 | relstart = _bfd_elf64_link_read_relocs (obfd, sec, (PTR) NULL, | |
3722 | (Elf_Internal_Rela *) NULL, | |
3723 | info->keep_memory); | |
3724 | if (relstart == NULL) | |
3725 | return false; | |
3726 | ||
3727 | /* First run through the relocs to check they are sane, and to | |
3728 | determine whether we need to edit this opd section. */ | |
3729 | need_edit = false; | |
3730 | offset = 0; | |
3731 | relend = relstart + sec->reloc_count; | |
3732 | for (rel = relstart; rel < relend; rel++) | |
3733 | { | |
3734 | enum elf_ppc_reloc_type r_type; | |
3735 | unsigned long r_symndx; | |
3736 | asection *sym_sec; | |
3737 | struct elf_link_hash_entry *h; | |
3738 | Elf_Internal_Sym *sym; | |
3739 | ||
3740 | /* .opd contains a regular array of 24 byte entries. We're | |
3741 | only interested in the reloc pointing to a function entry | |
3742 | point. */ | |
3743 | r_type = (enum elf_ppc_reloc_type) ELF64_R_TYPE (rel->r_info); | |
3744 | if (r_type == R_PPC64_TOC) | |
3745 | continue; | |
3746 | ||
3747 | if (r_type != R_PPC64_ADDR64) | |
3748 | { | |
3749 | (*_bfd_error_handler) | |
3750 | (_("%s: unexpected reloc type %u in .opd section"), | |
3751 | bfd_archive_filename (ibfd), r_type); | |
3752 | need_edit = false; | |
3753 | break; | |
3754 | } | |
3755 | ||
3756 | if (rel + 1 >= relend) | |
3757 | continue; | |
3758 | r_type = (enum elf_ppc_reloc_type) ELF64_R_TYPE ((rel + 1)->r_info); | |
3759 | if (r_type != R_PPC64_TOC) | |
3760 | continue; | |
3761 | ||
3762 | if (rel->r_offset != offset) | |
3763 | { | |
3764 | /* If someone messes with .opd alignment then after a | |
3765 | "ld -r" we might have padding in the middle of .opd. | |
3766 | Also, there's nothing to prevent someone putting | |
3767 | something silly in .opd with the assembler. No .opd | |
3768 | optimization for them! */ | |
3769 | (*_bfd_error_handler) | |
3770 | (_("%s: .opd is not a regular array of opd entries"), | |
3771 | bfd_archive_filename (ibfd)); | |
3772 | need_edit = false; | |
3773 | break; | |
3774 | } | |
3775 | ||
3776 | r_symndx = ELF64_R_SYM (rel->r_info); | |
3777 | sym_sec = NULL; | |
3778 | h = NULL; | |
3779 | sym = NULL; | |
3780 | if (r_symndx >= symtab_hdr->sh_info) | |
3781 | { | |
3782 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
3783 | while (h->root.type == bfd_link_hash_indirect | |
3784 | || h->root.type == bfd_link_hash_warning) | |
3785 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
3786 | if (h->root.type == bfd_link_hash_defined | |
3787 | || h->root.type == bfd_link_hash_defweak) | |
3788 | sym_sec = h->root.u.def.section; | |
3789 | } | |
3790 | else | |
3791 | { | |
6cdc0ccc AM |
3792 | if (local_syms == NULL) |
3793 | { | |
3794 | local_syms = (Elf_Internal_Sym *) symtab_hdr->contents; | |
3795 | if (local_syms == NULL) | |
3796 | local_syms = bfd_elf_get_elf_syms (ibfd, symtab_hdr, | |
3797 | symtab_hdr->sh_info, 0, | |
3798 | NULL, NULL, NULL); | |
3799 | if (local_syms == NULL) | |
3800 | goto error_free_rel; | |
3801 | } | |
3802 | sym = local_syms + r_symndx; | |
1e2f5b6e AM |
3803 | if ((sym->st_shndx != SHN_UNDEF |
3804 | && sym->st_shndx < SHN_LORESERVE) | |
3805 | || sym->st_shndx > SHN_HIRESERVE) | |
3806 | sym_sec = bfd_section_from_elf_index (ibfd, sym->st_shndx); | |
3807 | } | |
3808 | ||
3809 | if (sym_sec == NULL || sym_sec->owner == NULL) | |
3810 | { | |
3811 | (*_bfd_error_handler) | |
3812 | (_("%s: undefined sym `%s' in .opd section"), | |
3813 | bfd_archive_filename (ibfd), | |
3814 | h != NULL ? h->root.root.string : "<local symbol>"); | |
3815 | need_edit = false; | |
3816 | break; | |
3817 | } | |
3818 | ||
3819 | if (sym_sec->output_section == bfd_abs_section_ptr) | |
3820 | { | |
3821 | /* OK, we've found a function that's excluded from the | |
3822 | link. */ | |
3823 | need_edit = true; | |
3824 | } | |
3825 | ||
3826 | offset += 24; | |
3827 | } | |
3828 | ||
3829 | if (need_edit) | |
3830 | { | |
3831 | Elf_Internal_Rela *write_rel; | |
3832 | bfd_byte *rptr, *wptr; | |
3833 | boolean skip; | |
3834 | ||
3835 | /* This seems a waste of time as input .opd sections are all | |
3836 | zeros as generated by gcc, but I suppose there's no reason | |
3837 | this will always be so. We might start putting something in | |
3838 | the third word of .opd entries. */ | |
3839 | if ((sec->flags & SEC_IN_MEMORY) == 0) | |
3840 | { | |
3841 | bfd_byte *loc = bfd_alloc (ibfd, sec->_raw_size); | |
6cdc0ccc AM |
3842 | if (loc == NULL |
3843 | || !bfd_get_section_contents (ibfd, sec, loc, (bfd_vma) 0, | |
3844 | sec->_raw_size)) | |
3845 | { | |
3846 | if (local_syms != NULL | |
3847 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
3848 | free (local_syms); | |
3849 | error_free_rel: | |
3850 | if (elf_section_data (sec)->relocs != relstart) | |
3851 | free (relstart); | |
3852 | return false; | |
3853 | } | |
1e2f5b6e AM |
3854 | sec->contents = loc; |
3855 | sec->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS); | |
3856 | } | |
3857 | ||
3858 | elf_section_data (sec)->relocs = relstart; | |
3859 | ||
3860 | wptr = sec->contents; | |
3861 | rptr = sec->contents; | |
3862 | write_rel = relstart; | |
3863 | skip = false; | |
3864 | offset = 0; | |
3865 | for (rel = relstart; rel < relend; rel++) | |
3866 | { | |
3867 | if (rel->r_offset == offset) | |
3868 | { | |
3869 | unsigned long r_symndx; | |
3870 | asection *sym_sec; | |
3871 | struct elf_link_hash_entry *h; | |
3872 | Elf_Internal_Sym *sym; | |
3873 | ||
3874 | r_symndx = ELF64_R_SYM (rel->r_info); | |
3875 | sym_sec = NULL; | |
3876 | h = NULL; | |
3877 | sym = NULL; | |
3878 | if (r_symndx >= symtab_hdr->sh_info) | |
3879 | { | |
3880 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
3881 | while (h->root.type == bfd_link_hash_indirect | |
3882 | || h->root.type == bfd_link_hash_warning) | |
3883 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
3884 | if (h->root.type == bfd_link_hash_defined | |
3885 | || h->root.type == bfd_link_hash_defweak) | |
3886 | sym_sec = h->root.u.def.section; | |
3887 | } | |
3888 | else | |
3889 | { | |
6cdc0ccc | 3890 | sym = local_syms + r_symndx; |
1e2f5b6e AM |
3891 | if ((sym->st_shndx != SHN_UNDEF |
3892 | && sym->st_shndx < SHN_LORESERVE) | |
3893 | || sym->st_shndx > SHN_HIRESERVE) | |
3894 | sym_sec = bfd_section_from_elf_index (ibfd, | |
3895 | sym->st_shndx); | |
3896 | } | |
3897 | ||
3898 | skip = sym_sec->output_section == bfd_abs_section_ptr; | |
3899 | if (!skip) | |
3900 | { | |
3901 | /* We'll be keeping this opd entry. */ | |
3902 | ||
3903 | if (h != NULL) | |
3904 | { | |
3905 | /* Redefine the function descriptor symbol | |
3906 | to this location in the opd section. | |
3907 | We've checked above that opd relocs are | |
3908 | ordered. */ | |
3909 | struct elf_link_hash_entry *fdh; | |
3910 | struct ppc_link_hash_entry *fh; | |
3911 | ||
3912 | fh = (struct ppc_link_hash_entry *) h; | |
3913 | BFD_ASSERT (fh->is_func); | |
3914 | fdh = fh->oh; | |
3915 | fdh->root.u.def.value = wptr - sec->contents; | |
3916 | } | |
3917 | else | |
3918 | { | |
6cdc0ccc AM |
3919 | /* Local syms are a bit tricky. We could |
3920 | tweak them as they can be cached, but | |
3921 | we'd need to look through the local syms | |
3922 | for the function descriptor sym which we | |
3923 | don't have at the moment. So keep an | |
3924 | array of adjustments. */ | |
1e2f5b6e AM |
3925 | adjust[(rel->r_offset + wptr - rptr) / 24] |
3926 | = wptr - rptr; | |
3927 | } | |
3928 | ||
3929 | if (wptr != rptr) | |
3930 | memcpy (wptr, rptr, 24); | |
3931 | wptr += 24; | |
3932 | } | |
3933 | rptr += 24; | |
3934 | offset += 24; | |
3935 | } | |
3936 | ||
3937 | /* We need to adjust any reloc offsets to point to the | |
3938 | new opd entries. While we're at it, we may as well | |
3939 | remove redundant relocs. */ | |
3940 | if (!skip) | |
3941 | { | |
3942 | rel->r_offset += wptr - rptr; | |
3943 | if (write_rel != rel) | |
3944 | memcpy (write_rel, rel, sizeof (*rel)); | |
3945 | ++write_rel; | |
3946 | } | |
3947 | } | |
3948 | ||
3949 | sec->_cooked_size = wptr - sec->contents; | |
3950 | sec->reloc_count = write_rel - relstart; | |
3951 | } | |
6cdc0ccc | 3952 | else if (elf_section_data (sec)->relocs != relstart) |
1e2f5b6e | 3953 | free (relstart); |
6cdc0ccc AM |
3954 | |
3955 | if (local_syms != NULL | |
3956 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
3957 | { | |
3958 | if (!info->keep_memory) | |
3959 | free (local_syms); | |
3960 | else | |
3961 | symtab_hdr->contents = (unsigned char *) local_syms; | |
3962 | } | |
1e2f5b6e AM |
3963 | } |
3964 | ||
3965 | return true; | |
3966 | } | |
3967 | ||
65f38f15 AM |
3968 | /* This is the condition under which ppc64_elf_finish_dynamic_symbol |
3969 | will be called from elflink.h. If elflink.h doesn't call our | |
3970 | finish_dynamic_symbol routine, we'll need to do something about | |
3971 | initializing any .plt and .got entries in ppc64_elf_relocate_section. */ | |
3972 | #define WILL_CALL_FINISH_DYNAMIC_SYMBOL(DYN, INFO, H) \ | |
3973 | ((DYN) \ | |
3974 | && ((INFO)->shared \ | |
3975 | || ((H)->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0) \ | |
3976 | && ((H)->dynindx != -1 \ | |
3977 | || ((H)->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0)) | |
5bd4f169 | 3978 | |
65f38f15 AM |
3979 | /* Allocate space in .plt, .got and associated reloc sections for |
3980 | dynamic relocs. */ | |
5bd4f169 AM |
3981 | |
3982 | static boolean | |
65f38f15 AM |
3983 | allocate_dynrelocs (h, inf) |
3984 | struct elf_link_hash_entry *h; | |
3985 | PTR inf; | |
5bd4f169 | 3986 | { |
65f38f15 AM |
3987 | struct bfd_link_info *info; |
3988 | struct ppc_link_hash_table *htab; | |
5bd4f169 | 3989 | asection *s; |
65f38f15 AM |
3990 | struct ppc_link_hash_entry *eh; |
3991 | struct ppc_dyn_relocs *p; | |
5bd4f169 | 3992 | |
e92d460e | 3993 | if (h->root.type == bfd_link_hash_indirect) |
65f38f15 | 3994 | return true; |
5bd4f169 | 3995 | |
e92d460e AM |
3996 | if (h->root.type == bfd_link_hash_warning) |
3997 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
3998 | ||
65f38f15 AM |
3999 | info = (struct bfd_link_info *) inf; |
4000 | htab = ppc_hash_table (info); | |
5bd4f169 | 4001 | |
65f38f15 | 4002 | if (htab->elf.dynamic_sections_created |
e86ce104 AM |
4003 | && h->plt.refcount > 0 |
4004 | && h->dynindx != -1) | |
5bd4f169 | 4005 | { |
e86ce104 | 4006 | BFD_ASSERT (((struct ppc_link_hash_entry *) h)->is_func_descriptor); |
5bd4f169 | 4007 | |
65f38f15 AM |
4008 | if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info, h)) |
4009 | { | |
65f38f15 AM |
4010 | /* If this is the first .plt entry, make room for the special |
4011 | first entry. */ | |
4012 | s = htab->splt; | |
5bd4f169 | 4013 | if (s->_raw_size == 0) |
65f38f15 AM |
4014 | s->_raw_size += PLT_INITIAL_ENTRY_SIZE; |
4015 | ||
4016 | h->plt.offset = s->_raw_size; | |
4017 | ||
4018 | /* Make room for this entry. */ | |
4019 | s->_raw_size += PLT_ENTRY_SIZE; | |
4020 | ||
721956f4 | 4021 | /* Make room for the .glink code. */ |
5d1634d7 AM |
4022 | s = htab->sglink; |
4023 | if (s->_raw_size == 0) | |
4024 | s->_raw_size += GLINK_CALL_STUB_SIZE; | |
4025 | /* We need bigger stubs past index 32767. */ | |
4026 | if (s->_raw_size >= GLINK_CALL_STUB_SIZE + 32768*2*4) | |
4027 | s->_raw_size += 4; | |
4028 | s->_raw_size += 2*4; | |
65f38f15 AM |
4029 | |
4030 | /* We also need to make an entry in the .rela.plt section. */ | |
4031 | s = htab->srelplt; | |
4032 | s->_raw_size += sizeof (Elf64_External_Rela); | |
4033 | } | |
4034 | else | |
4035 | { | |
4036 | h->plt.offset = (bfd_vma) -1; | |
4037 | h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT; | |
4038 | } | |
4039 | } | |
4040 | else | |
4041 | { | |
4042 | h->plt.offset = (bfd_vma) -1; | |
4043 | h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT; | |
4044 | } | |
4045 | ||
4046 | if (h->got.refcount > 0) | |
4047 | { | |
4048 | boolean dyn; | |
4049 | ||
4050 | /* Make sure this symbol is output as a dynamic symbol. | |
4051 | Undefined weak syms won't yet be marked as dynamic. */ | |
4052 | if (h->dynindx == -1 | |
4053 | && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0) | |
4054 | { | |
4055 | if (! bfd_elf64_link_record_dynamic_symbol (info, h)) | |
4056 | return false; | |
4057 | } | |
4058 | ||
4059 | s = htab->sgot; | |
4060 | h->got.offset = s->_raw_size; | |
4061 | s->_raw_size += 8; | |
4062 | dyn = htab->elf.dynamic_sections_created; | |
4063 | if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info, h)) | |
4064 | htab->srelgot->_raw_size += sizeof (Elf64_External_Rela); | |
4065 | } | |
4066 | else | |
4067 | h->got.offset = (bfd_vma) -1; | |
4068 | ||
4069 | eh = (struct ppc_link_hash_entry *) h; | |
4070 | if (eh->dyn_relocs == NULL) | |
4071 | return true; | |
4072 | ||
4073 | /* In the shared -Bsymbolic case, discard space allocated for | |
4074 | dynamic pc-relative relocs against symbols which turn out to be | |
4075 | defined in regular objects. For the normal shared case, discard | |
4076 | space for relocs that have become local due to symbol visibility | |
4077 | changes. */ | |
4078 | ||
4079 | if (info->shared) | |
4080 | { | |
4081 | if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) != 0 | |
4082 | && ((h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0 | |
4083 | || info->symbolic)) | |
4084 | { | |
4085 | struct ppc_dyn_relocs **pp; | |
4086 | ||
4087 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; ) | |
5bd4f169 | 4088 | { |
65f38f15 AM |
4089 | p->count -= p->pc_count; |
4090 | p->pc_count = 0; | |
4091 | if (p->count == 0) | |
4092 | *pp = p->next; | |
4093 | else | |
4094 | pp = &p->next; | |
5bd4f169 | 4095 | } |
65f38f15 AM |
4096 | } |
4097 | } | |
4098 | else | |
4099 | { | |
4100 | /* For the non-shared case, discard space for relocs against | |
4101 | symbols which turn out to need copy relocs or are not | |
4102 | dynamic. */ | |
4103 | ||
4104 | if ((h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0 | |
4105 | && (((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0 | |
4106 | && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0) | |
4107 | || (htab->elf.dynamic_sections_created | |
4108 | && (h->root.type == bfd_link_hash_undefweak | |
4109 | || h->root.type == bfd_link_hash_undefined)))) | |
4110 | { | |
4111 | /* Make sure this symbol is output as a dynamic symbol. | |
4112 | Undefined weak syms won't yet be marked as dynamic. */ | |
4113 | if (h->dynindx == -1 | |
4114 | && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0) | |
4115 | { | |
ec338859 | 4116 | if (! bfd_elf64_link_record_dynamic_symbol (info, h)) |
65f38f15 AM |
4117 | return false; |
4118 | } | |
4119 | ||
4120 | /* If that succeeded, we know we'll be keeping all the | |
4121 | relocs. */ | |
4122 | if (h->dynindx != -1) | |
4123 | goto keep; | |
4124 | } | |
4125 | ||
4126 | eh->dyn_relocs = NULL; | |
4127 | ||
ec338859 | 4128 | keep: ; |
65f38f15 AM |
4129 | } |
4130 | ||
4131 | /* Finally, allocate space. */ | |
4132 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
4133 | { | |
4134 | asection *sreloc = elf_section_data (p->sec)->sreloc; | |
4135 | sreloc->_raw_size += p->count * sizeof (Elf64_External_Rela); | |
4136 | } | |
4137 | ||
4138 | return true; | |
4139 | } | |
4140 | ||
4141 | /* Find any dynamic relocs that apply to read-only sections. */ | |
4142 | ||
4143 | static boolean | |
4144 | readonly_dynrelocs (h, inf) | |
4145 | struct elf_link_hash_entry *h; | |
4146 | PTR inf; | |
4147 | { | |
4148 | struct ppc_link_hash_entry *eh; | |
4149 | struct ppc_dyn_relocs *p; | |
4150 | ||
e92d460e AM |
4151 | if (h->root.type == bfd_link_hash_warning) |
4152 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
4153 | ||
65f38f15 AM |
4154 | eh = (struct ppc_link_hash_entry *) h; |
4155 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
4156 | { | |
4157 | asection *s = p->sec->output_section; | |
4158 | ||
4159 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
4160 | { | |
4161 | struct bfd_link_info *info = (struct bfd_link_info *) inf; | |
4162 | ||
4163 | info->flags |= DF_TEXTREL; | |
4164 | ||
4165 | /* Not an error, just cut short the traversal. */ | |
4166 | return false; | |
4167 | } | |
4168 | } | |
4169 | return true; | |
4170 | } | |
4171 | ||
4172 | /* Set the sizes of the dynamic sections. */ | |
4173 | ||
4174 | static boolean | |
4175 | ppc64_elf_size_dynamic_sections (output_bfd, info) | |
4176 | bfd *output_bfd ATTRIBUTE_UNUSED; | |
4177 | struct bfd_link_info *info; | |
4178 | { | |
4179 | struct ppc_link_hash_table *htab; | |
4180 | bfd *dynobj; | |
4181 | asection *s; | |
4182 | boolean relocs; | |
4183 | bfd *ibfd; | |
4184 | ||
4185 | htab = ppc_hash_table (info); | |
4186 | dynobj = htab->elf.dynobj; | |
4187 | if (dynobj == NULL) | |
4188 | abort (); | |
4189 | ||
4190 | if (htab->elf.dynamic_sections_created) | |
4191 | { | |
4192 | /* Set the contents of the .interp section to the interpreter. */ | |
4193 | if (! info->shared) | |
4194 | { | |
4195 | s = bfd_get_section_by_name (dynobj, ".interp"); | |
4196 | if (s == NULL) | |
4197 | abort (); | |
4198 | s->_raw_size = sizeof ELF_DYNAMIC_INTERPRETER; | |
4199 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; | |
4200 | } | |
4201 | } | |
4202 | ||
4203 | /* Set up .got offsets for local syms, and space for local dynamic | |
4204 | relocs. */ | |
4205 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
4206 | { | |
4207 | bfd_signed_vma *local_got; | |
4208 | bfd_signed_vma *end_local_got; | |
4209 | bfd_size_type locsymcount; | |
4210 | Elf_Internal_Shdr *symtab_hdr; | |
4211 | asection *srel; | |
4212 | ||
4213 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour) | |
4214 | continue; | |
4215 | ||
4216 | for (s = ibfd->sections; s != NULL; s = s->next) | |
4217 | { | |
ec338859 | 4218 | struct ppc_dyn_relocs *p; |
65f38f15 | 4219 | |
ec338859 AM |
4220 | for (p = *((struct ppc_dyn_relocs **) |
4221 | &elf_section_data (s)->local_dynrel); | |
4222 | p != NULL; | |
4223 | p = p->next) | |
65f38f15 | 4224 | { |
ec338859 AM |
4225 | if (!bfd_is_abs_section (p->sec) |
4226 | && bfd_is_abs_section (p->sec->output_section)) | |
4227 | { | |
4228 | /* Input section has been discarded, either because | |
4229 | it is a copy of a linkonce section or due to | |
4230 | linker script /DISCARD/, so we'll be discarding | |
4231 | the relocs too. */ | |
4232 | } | |
248866a8 | 4233 | else if (p->count != 0) |
ec338859 AM |
4234 | { |
4235 | srel = elf_section_data (p->sec)->sreloc; | |
4236 | srel->_raw_size += p->count * sizeof (Elf64_External_Rela); | |
248866a8 AM |
4237 | if ((p->sec->output_section->flags & SEC_READONLY) != 0) |
4238 | info->flags |= DF_TEXTREL; | |
ec338859 | 4239 | } |
65f38f15 AM |
4240 | } |
4241 | } | |
4242 | ||
4243 | local_got = elf_local_got_refcounts (ibfd); | |
4244 | if (!local_got) | |
4245 | continue; | |
4246 | ||
4247 | symtab_hdr = &elf_tdata (ibfd)->symtab_hdr; | |
4248 | locsymcount = symtab_hdr->sh_info; | |
4249 | end_local_got = local_got + locsymcount; | |
4250 | s = htab->sgot; | |
4251 | srel = htab->srelgot; | |
4252 | for (; local_got < end_local_got; ++local_got) | |
4253 | { | |
4254 | if (*local_got > 0) | |
5bd4f169 | 4255 | { |
65f38f15 AM |
4256 | *local_got = s->_raw_size; |
4257 | s->_raw_size += 8; | |
4258 | if (info->shared) | |
4259 | srel->_raw_size += sizeof (Elf64_External_Rela); | |
5bd4f169 | 4260 | } |
65f38f15 AM |
4261 | else |
4262 | *local_got = (bfd_vma) -1; | |
4263 | } | |
4264 | } | |
4265 | ||
1e2f5b6e AM |
4266 | if (!edit_opd (output_bfd, info)) |
4267 | return false; | |
4268 | ||
65f38f15 AM |
4269 | /* Allocate global sym .plt and .got entries, and space for global |
4270 | sym dynamic relocs. */ | |
4271 | elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, (PTR) info); | |
4272 | ||
4273 | /* We now have determined the sizes of the various dynamic sections. | |
4274 | Allocate memory for them. */ | |
4275 | relocs = false; | |
4276 | for (s = dynobj->sections; s != NULL; s = s->next) | |
4277 | { | |
4278 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
4279 | continue; | |
4280 | ||
721956f4 AM |
4281 | if (s == htab->sbrlt || s == htab->srelbrlt) |
4282 | /* These haven't been allocated yet; don't strip. */ | |
4283 | continue; | |
4284 | else if (s == htab->splt | |
4285 | || s == htab->sgot | |
4286 | || s == htab->sglink) | |
65f38f15 AM |
4287 | { |
4288 | /* Strip this section if we don't need it; see the | |
4289 | comment below. */ | |
5bd4f169 | 4290 | } |
65f38f15 | 4291 | else if (strncmp (bfd_get_section_name (dynobj, s), ".rela", 5) == 0) |
5bd4f169 AM |
4292 | { |
4293 | if (s->_raw_size == 0) | |
4294 | { | |
4295 | /* If we don't need this section, strip it from the | |
4296 | output file. This is mostly to handle .rela.bss and | |
4297 | .rela.plt. We must create both sections in | |
4298 | create_dynamic_sections, because they must be created | |
4299 | before the linker maps input sections to output | |
4300 | sections. The linker does that before | |
4301 | adjust_dynamic_symbol is called, and it is that | |
4302 | function which decides whether anything needs to go | |
4303 | into these sections. */ | |
5bd4f169 AM |
4304 | } |
4305 | else | |
4306 | { | |
65f38f15 AM |
4307 | if (s != htab->srelplt) |
4308 | relocs = true; | |
5bd4f169 AM |
4309 | |
4310 | /* We use the reloc_count field as a counter if we need | |
4311 | to copy relocs into the output file. */ | |
4312 | s->reloc_count = 0; | |
4313 | } | |
4314 | } | |
65f38f15 | 4315 | else |
5bd4f169 AM |
4316 | { |
4317 | /* It's not one of our sections, so don't allocate space. */ | |
4318 | continue; | |
4319 | } | |
4320 | ||
65f38f15 | 4321 | if (s->_raw_size == 0) |
5bd4f169 AM |
4322 | { |
4323 | _bfd_strip_section_from_output (info, s); | |
4324 | continue; | |
4325 | } | |
4326 | ||
5f333394 AM |
4327 | /* .plt is in the bss section. We don't initialise it. */ |
4328 | if ((s->flags & SEC_LOAD) == 0) | |
4329 | continue; | |
4330 | ||
65f38f15 AM |
4331 | /* Allocate memory for the section contents. We use bfd_zalloc |
4332 | here in case unused entries are not reclaimed before the | |
4333 | section's contents are written out. This should not happen, | |
4334 | but this way if it does, we get a R_PPC64_NONE reloc instead | |
4335 | of garbage. */ | |
721956f4 | 4336 | s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->_raw_size); |
65f38f15 | 4337 | if (s->contents == NULL) |
5bd4f169 AM |
4338 | return false; |
4339 | } | |
4340 | ||
e86ce104 | 4341 | if (htab->elf.dynamic_sections_created) |
5bd4f169 AM |
4342 | { |
4343 | /* Add some entries to the .dynamic section. We fill in the | |
4344 | values later, in ppc64_elf_finish_dynamic_sections, but we | |
4345 | must add the entries now so that we get the correct size for | |
4346 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
4347 | dynamic linker and used by the debugger. */ | |
dc810e39 AM |
4348 | #define add_dynamic_entry(TAG, VAL) \ |
4349 | bfd_elf64_add_dynamic_entry (info, (bfd_vma) (TAG), (bfd_vma) (VAL)) | |
4350 | ||
4351 | if (!info->shared) | |
5bd4f169 | 4352 | { |
dc810e39 | 4353 | if (!add_dynamic_entry (DT_DEBUG, 0)) |
5bd4f169 AM |
4354 | return false; |
4355 | } | |
4356 | ||
9c07fe7c | 4357 | if (htab->splt != NULL && htab->splt->_raw_size != 0) |
5bd4f169 | 4358 | { |
dc810e39 AM |
4359 | if (!add_dynamic_entry (DT_PLTGOT, 0) |
4360 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
4361 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) | |
5d1634d7 AM |
4362 | || !add_dynamic_entry (DT_JMPREL, 0) |
4363 | || !add_dynamic_entry (DT_PPC64_GLINK, 0)) | |
5bd4f169 AM |
4364 | return false; |
4365 | } | |
4366 | ||
19397422 AM |
4367 | if (NO_OPD_RELOCS) |
4368 | { | |
4369 | if (!add_dynamic_entry (DT_PPC64_OPD, 0) | |
4370 | || !add_dynamic_entry (DT_PPC64_OPDSZ, 0)) | |
4371 | return false; | |
4372 | } | |
4373 | ||
5bd4f169 AM |
4374 | if (relocs) |
4375 | { | |
dc810e39 AM |
4376 | if (!add_dynamic_entry (DT_RELA, 0) |
4377 | || !add_dynamic_entry (DT_RELASZ, 0) | |
4378 | || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela))) | |
5bd4f169 | 4379 | return false; |
5bd4f169 | 4380 | |
65f38f15 AM |
4381 | /* If any dynamic relocs apply to a read-only section, |
4382 | then we need a DT_TEXTREL entry. */ | |
248866a8 AM |
4383 | if ((info->flags & DF_TEXTREL) == 0) |
4384 | elf_link_hash_traverse (&htab->elf, readonly_dynrelocs, | |
4385 | (PTR) info); | |
5bd4f169 | 4386 | |
65f38f15 | 4387 | if ((info->flags & DF_TEXTREL) != 0) |
5bd4f169 | 4388 | { |
65f38f15 AM |
4389 | if (!add_dynamic_entry (DT_TEXTREL, 0)) |
4390 | return false; | |
5bd4f169 | 4391 | } |
5bd4f169 | 4392 | } |
5bd4f169 | 4393 | } |
65f38f15 | 4394 | #undef add_dynamic_entry |
5bd4f169 AM |
4395 | |
4396 | return true; | |
4397 | } | |
4398 | ||
721956f4 | 4399 | /* Determine the type of stub needed, if any, for a call. */ |
5bd4f169 | 4400 | |
721956f4 AM |
4401 | static INLINE enum ppc_stub_type |
4402 | ppc_type_of_stub (input_sec, rel, hash, destination) | |
4403 | asection *input_sec; | |
4404 | const Elf_Internal_Rela *rel; | |
4405 | struct ppc_link_hash_entry **hash; | |
4406 | bfd_vma destination; | |
5bd4f169 | 4407 | { |
721956f4 AM |
4408 | struct ppc_link_hash_entry *h = *hash; |
4409 | bfd_vma location; | |
4410 | bfd_vma branch_offset; | |
4411 | bfd_vma max_branch_offset; | |
4412 | unsigned int r_type; | |
5bd4f169 | 4413 | |
721956f4 AM |
4414 | if (h != NULL) |
4415 | { | |
4416 | if (h->oh != NULL | |
4417 | && h->oh->plt.offset != (bfd_vma) -1 | |
4418 | && h->oh->dynindx != -1) | |
5bd4f169 | 4419 | { |
721956f4 AM |
4420 | *hash = (struct ppc_link_hash_entry *) h->oh; |
4421 | return ppc_stub_plt_call; | |
5bd4f169 AM |
4422 | } |
4423 | ||
721956f4 AM |
4424 | if (h->elf.root.type == bfd_link_hash_undefweak |
4425 | || h->elf.root.type == bfd_link_hash_undefined) | |
4426 | return ppc_stub_none; | |
5d1634d7 | 4427 | } |
5d1634d7 | 4428 | |
721956f4 AM |
4429 | /* Determine where the call point is. */ |
4430 | location = (input_sec->output_offset | |
4431 | + input_sec->output_section->vma | |
4432 | + rel->r_offset); | |
5d1634d7 | 4433 | |
721956f4 AM |
4434 | branch_offset = destination - location; |
4435 | r_type = ELF64_R_TYPE (rel->r_info); | |
5d1634d7 | 4436 | |
721956f4 AM |
4437 | /* Determine if a long branch stub is needed. */ |
4438 | max_branch_offset = 1 << 25; | |
4439 | if (r_type != (unsigned int) R_PPC64_REL24) | |
4440 | max_branch_offset = 1 << 15; | |
5d1634d7 | 4441 | |
721956f4 AM |
4442 | if (branch_offset + max_branch_offset >= 2 * max_branch_offset) |
4443 | /* We need a stub. Figure out whether a long_branch or plt_branch | |
4444 | is needed later. */ | |
4445 | return ppc_stub_long_branch; | |
5d1634d7 | 4446 | |
721956f4 | 4447 | return ppc_stub_none; |
5d1634d7 AM |
4448 | } |
4449 | ||
4450 | /* Build a .plt call stub. */ | |
4451 | ||
4452 | static bfd_byte * | |
4453 | build_plt_stub (obfd, p, offset, glink) | |
4454 | bfd *obfd; | |
4455 | bfd_byte *p; | |
4456 | int offset; | |
4457 | int glink; | |
4458 | { | |
4459 | #define PPC_LO(v) ((v) & 0xffff) | |
4460 | #define PPC_HI(v) (((v) >> 16) & 0xffff) | |
4461 | #define PPC_HA(v) PPC_HI ((v) + 0x8000) | |
4462 | ||
4463 | if (glink) | |
4464 | bfd_put_32 (obfd, LD_R2_40R1, p), p += 4; | |
4465 | bfd_put_32 (obfd, ADDIS_R12_R2 | PPC_HA (offset), p), p += 4; | |
4466 | if (!glink) | |
4467 | bfd_put_32 (obfd, STD_R2_40R1, p), p += 4; | |
4468 | bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset), p), p += 4; | |
4469 | if (PPC_HA (offset + 8) != PPC_HA (offset)) | |
4470 | bfd_put_32 (obfd, ADDIS_R12_R12_1, p), p += 4; | |
4471 | offset += 8; | |
4472 | bfd_put_32 (obfd, LD_R2_0R12 | PPC_LO (offset), p), p += 4; | |
4473 | if (PPC_HA (offset + 8) != PPC_HA (offset)) | |
4474 | bfd_put_32 (obfd, ADDIS_R12_R12_1, p), p += 4; | |
4475 | offset += 8; | |
4476 | bfd_put_32 (obfd, MTCTR_R11, p), p += 4; | |
4477 | bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset), p), p += 4; | |
4478 | bfd_put_32 (obfd, BCTR, p), p += 4; | |
4479 | return p; | |
4480 | } | |
4481 | ||
5d1634d7 | 4482 | static boolean |
721956f4 AM |
4483 | ppc_build_one_stub (gen_entry, in_arg) |
4484 | struct bfd_hash_entry *gen_entry; | |
4485 | PTR in_arg; | |
5d1634d7 | 4486 | { |
721956f4 AM |
4487 | struct ppc_stub_hash_entry *stub_entry; |
4488 | struct ppc_branch_hash_entry *br_entry; | |
5d1634d7 AM |
4489 | struct bfd_link_info *info; |
4490 | struct ppc_link_hash_table *htab; | |
721956f4 AM |
4491 | asection *stub_sec; |
4492 | bfd *stub_bfd; | |
4493 | bfd_byte *loc; | |
4494 | bfd_byte *p; | |
4495 | unsigned int indx; | |
4496 | bfd_vma off; | |
4497 | int size; | |
5d1634d7 | 4498 | |
721956f4 AM |
4499 | /* Massage our args to the form they really have. */ |
4500 | stub_entry = (struct ppc_stub_hash_entry *) gen_entry; | |
4501 | info = (struct bfd_link_info *) in_arg; | |
5d1634d7 | 4502 | |
5d1634d7 | 4503 | htab = ppc_hash_table (info); |
721956f4 | 4504 | stub_sec = stub_entry->stub_sec; |
5d1634d7 | 4505 | |
721956f4 AM |
4506 | /* Make a note of the offset within the stubs for this entry. */ |
4507 | stub_entry->stub_offset = stub_sec->_cooked_size; | |
4508 | loc = stub_sec->contents + stub_entry->stub_offset; | |
4509 | ||
4510 | stub_bfd = stub_sec->owner; | |
4511 | ||
4512 | switch (stub_entry->stub_type) | |
5d1634d7 | 4513 | { |
721956f4 AM |
4514 | case ppc_stub_long_branch: |
4515 | /* Branches are relative. This is where we are going to. */ | |
4516 | off = (stub_entry->target_value | |
4517 | + stub_entry->target_section->output_offset | |
4518 | + stub_entry->target_section->output_section->vma); | |
5d1634d7 | 4519 | |
721956f4 AM |
4520 | /* And this is where we are coming from. */ |
4521 | off -= (stub_entry->stub_offset | |
4522 | + stub_sec->output_offset | |
4523 | + stub_sec->output_section->vma); | |
e86ce104 | 4524 | |
721956f4 | 4525 | BFD_ASSERT (off + (1 << 25) < (bfd_vma) (1 << 26)); |
e86ce104 | 4526 | |
721956f4 AM |
4527 | bfd_put_32 (stub_bfd, (bfd_vma) B_DOT | (off & 0x3fffffc), loc); |
4528 | size = 4; | |
4529 | break; | |
e86ce104 | 4530 | |
721956f4 AM |
4531 | case ppc_stub_plt_branch: |
4532 | br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table, | |
4533 | stub_entry->root.string + 9, | |
4534 | false, false); | |
4535 | if (br_entry == NULL) | |
4536 | { | |
4537 | (*_bfd_error_handler) (_("can't find branch stub `%s'"), | |
4538 | stub_entry->root.string + 9); | |
4539 | htab->stub_error = true; | |
4540 | return false; | |
4541 | } | |
4542 | ||
4543 | off = (stub_entry->target_value | |
4544 | + stub_entry->target_section->output_offset | |
4545 | + stub_entry->target_section->output_section->vma); | |
4546 | ||
4547 | bfd_put_64 (htab->sbrlt->owner, off, | |
4548 | htab->sbrlt->contents + br_entry->offset); | |
4549 | ||
4550 | if (info->shared) | |
4551 | { | |
4552 | /* Create a reloc for the branch lookup table entry. */ | |
4553 | Elf_Internal_Rela rela; | |
4554 | Elf64_External_Rela *r; | |
5d1634d7 | 4555 | |
721956f4 AM |
4556 | rela.r_offset = (br_entry->offset |
4557 | + htab->sbrlt->output_offset | |
4558 | + htab->sbrlt->output_section->vma); | |
4559 | rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
4560 | rela.r_addend = off; | |
4561 | ||
4562 | r = (Elf64_External_Rela *) htab->srelbrlt->contents; | |
4563 | r += htab->srelbrlt->reloc_count++; | |
4564 | bfd_elf64_swap_reloca_out (htab->srelbrlt->owner, &rela, r); | |
4565 | } | |
4566 | ||
4567 | off = (br_entry->offset | |
4568 | + htab->sbrlt->output_offset | |
4569 | + htab->sbrlt->output_section->vma | |
4570 | - elf_gp (htab->sbrlt->output_section->owner) | |
4571 | - TOC_BASE_OFF); | |
4572 | ||
4573 | if (off + 0x80000000 > 0xffffffff || (off & 7) != 0) | |
5d1634d7 AM |
4574 | { |
4575 | (*_bfd_error_handler) | |
e86ce104 | 4576 | (_("linkage table error against `%s'"), |
721956f4 | 4577 | stub_entry->root.string); |
5d1634d7 | 4578 | bfd_set_error (bfd_error_bad_value); |
721956f4 | 4579 | htab->stub_error = true; |
5d1634d7 AM |
4580 | return false; |
4581 | } | |
41bd81ab | 4582 | |
721956f4 AM |
4583 | indx = off; |
4584 | bfd_put_32 (stub_bfd, (bfd_vma) ADDIS_R12_R2 | PPC_HA (indx), loc); | |
4585 | bfd_put_32 (stub_bfd, (bfd_vma) LD_R11_0R12 | PPC_LO (indx), loc + 4); | |
4586 | bfd_put_32 (stub_bfd, (bfd_vma) MTCTR_R11, loc + 8); | |
4587 | bfd_put_32 (stub_bfd, (bfd_vma) BCTR, loc + 12); | |
4588 | size = 16; | |
4589 | break; | |
5d1634d7 | 4590 | |
721956f4 | 4591 | case ppc_stub_plt_call: |
5d1634d7 | 4592 | /* Build the .glink lazy link call stub. */ |
721956f4 AM |
4593 | p = htab->sglink->contents + htab->sglink->_cooked_size; |
4594 | indx = htab->sglink->reloc_count; | |
5d1634d7 AM |
4595 | if (indx < 0x8000) |
4596 | { | |
721956f4 | 4597 | bfd_put_32 (htab->sglink->owner, LI_R0_0 | indx, p); |
5d1634d7 AM |
4598 | p += 4; |
4599 | } | |
4600 | else | |
4601 | { | |
721956f4 | 4602 | bfd_put_32 (htab->sglink->owner, LIS_R0_0 | PPC_HI (indx), p); |
5d1634d7 | 4603 | p += 4; |
721956f4 | 4604 | bfd_put_32 (htab->sglink->owner, ORI_R0_R0_0 | PPC_LO (indx), p); |
5d1634d7 AM |
4605 | p += 4; |
4606 | } | |
721956f4 AM |
4607 | bfd_put_32 (htab->sglink->owner, |
4608 | B_DOT | ((htab->sglink->contents - p) & 0x3fffffc), p); | |
5d1634d7 | 4609 | p += 4; |
721956f4 AM |
4610 | htab->sglink->_cooked_size = p - htab->sglink->contents; |
4611 | htab->sglink->reloc_count += 1; | |
4612 | ||
c862ae31 AM |
4613 | /* Do the best we can for shared libraries built without |
4614 | exporting ".foo" for each "foo". This can happen when symbol | |
4615 | versioning scripts strip all bar a subset of symbols. */ | |
4616 | if (stub_entry->h->oh->root.type != bfd_link_hash_defined | |
4617 | && stub_entry->h->oh->root.type != bfd_link_hash_defweak) | |
4618 | { | |
4619 | /* Point the symbol at the stub. There may be multiple stubs, | |
4620 | we don't really care; The main thing is to make this sym | |
4621 | defined somewhere. */ | |
4622 | stub_entry->h->oh->root.type = bfd_link_hash_defined; | |
4623 | stub_entry->h->oh->root.u.def.section = stub_entry->stub_sec; | |
4624 | stub_entry->h->oh->root.u.def.value = stub_entry->stub_offset; | |
4625 | } | |
4626 | ||
721956f4 AM |
4627 | /* Now build the stub. */ |
4628 | off = stub_entry->h->elf.plt.offset; | |
4629 | if (off >= (bfd_vma) -2) | |
4630 | abort (); | |
4631 | ||
4632 | off &= ~ (bfd_vma) 1; | |
4633 | off += (htab->splt->output_offset | |
4634 | + htab->splt->output_section->vma | |
4635 | - elf_gp (htab->splt->output_section->owner) | |
4636 | - TOC_BASE_OFF); | |
4637 | ||
4638 | if (off + 0x80000000 > 0xffffffff || (off & 7) != 0) | |
4639 | { | |
4640 | (*_bfd_error_handler) | |
4641 | (_("linkage table error against `%s'"), | |
4642 | stub_entry->h->elf.root.root.string); | |
4643 | bfd_set_error (bfd_error_bad_value); | |
4644 | htab->stub_error = true; | |
4645 | return false; | |
4646 | } | |
4647 | ||
4648 | p = build_plt_stub (stub_bfd, loc, (int) off, 0); | |
4649 | size = p - loc; | |
4650 | break; | |
4651 | ||
4652 | default: | |
4653 | BFD_FAIL (); | |
4654 | return false; | |
4655 | } | |
4656 | ||
4657 | stub_sec->_cooked_size += size; | |
4658 | return true; | |
4659 | } | |
4660 | ||
4661 | /* As above, but don't actually build the stub. Just bump offset so | |
4662 | we know stub section sizes, and select plt_branch stubs where | |
4663 | long_branch stubs won't do. */ | |
4664 | ||
4665 | static boolean | |
4666 | ppc_size_one_stub (gen_entry, in_arg) | |
4667 | struct bfd_hash_entry *gen_entry; | |
4668 | PTR in_arg; | |
4669 | { | |
4670 | struct ppc_stub_hash_entry *stub_entry; | |
4671 | struct ppc_link_hash_table *htab; | |
4672 | bfd_vma off; | |
4673 | int size; | |
4674 | ||
4675 | /* Massage our args to the form they really have. */ | |
4676 | stub_entry = (struct ppc_stub_hash_entry *) gen_entry; | |
4677 | htab = (struct ppc_link_hash_table *) in_arg; | |
4678 | ||
4679 | if (stub_entry->stub_type == ppc_stub_plt_call) | |
4680 | { | |
4681 | off = stub_entry->h->elf.plt.offset & ~(bfd_vma) 1; | |
4682 | off += (htab->splt->output_offset | |
4683 | + htab->splt->output_section->vma | |
4684 | - elf_gp (htab->splt->output_section->owner) | |
4685 | - TOC_BASE_OFF); | |
4686 | ||
4687 | size = 28; | |
4688 | if (PPC_HA ((int) off + 16) != PPC_HA ((int) off)) | |
4689 | size += 4; | |
4690 | } | |
4691 | else | |
4692 | { | |
4693 | /* ppc_stub_long_branch or ppc_stub_plt_branch. */ | |
4694 | stub_entry->stub_type = ppc_stub_long_branch; | |
4695 | size = 4; | |
4696 | ||
4697 | off = (stub_entry->target_value | |
4698 | + stub_entry->target_section->output_offset | |
4699 | + stub_entry->target_section->output_section->vma); | |
4700 | off -= (stub_entry->stub_sec->_raw_size | |
4701 | + stub_entry->stub_sec->output_offset | |
4702 | + stub_entry->stub_sec->output_section->vma); | |
4703 | ||
4704 | if (off + (1 << 25) >= (bfd_vma) (1 << 26)) | |
4705 | { | |
4706 | struct ppc_branch_hash_entry *br_entry; | |
4707 | ||
4708 | br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table, | |
4709 | stub_entry->root.string + 9, | |
4710 | true, false); | |
4711 | if (br_entry == NULL) | |
4712 | { | |
4713 | (*_bfd_error_handler) (_("can't build branch stub `%s'"), | |
4714 | stub_entry->root.string + 9); | |
4715 | htab->stub_error = true; | |
4716 | return false; | |
4717 | } | |
4718 | ||
4719 | if (br_entry->iter != htab->stub_iteration) | |
4720 | { | |
4721 | br_entry->iter = htab->stub_iteration; | |
4722 | br_entry->offset = htab->sbrlt->_raw_size; | |
4723 | htab->sbrlt->_raw_size += 8; | |
4724 | } | |
4725 | stub_entry->stub_type = ppc_stub_plt_branch; | |
4726 | size = 16; | |
4727 | } | |
4728 | } | |
4729 | ||
4730 | stub_entry->stub_sec->_raw_size += size; | |
4731 | return true; | |
4732 | } | |
4733 | ||
4734 | /* Set up various things so that we can make a list of input sections | |
4735 | for each output section included in the link. Returns -1 on error, | |
cedb70c5 | 4736 | 0 when no stubs will be needed, and 1 on success. */ |
721956f4 AM |
4737 | |
4738 | int | |
4739 | ppc64_elf_setup_section_lists (output_bfd, info) | |
4740 | bfd *output_bfd; | |
4741 | struct bfd_link_info *info; | |
4742 | { | |
4743 | bfd *input_bfd; | |
721956f4 AM |
4744 | int top_id, top_index; |
4745 | asection *section; | |
4746 | asection **input_list, **list; | |
4747 | bfd_size_type amt; | |
4748 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
4749 | ||
805fc799 AM |
4750 | if (htab->elf.root.creator->flavour != bfd_target_elf_flavour |
4751 | || htab->sbrlt == NULL) | |
721956f4 AM |
4752 | return 0; |
4753 | ||
1e2f5b6e AM |
4754 | /* Find the top input section id. */ |
4755 | for (input_bfd = info->input_bfds, top_id = 0; | |
721956f4 AM |
4756 | input_bfd != NULL; |
4757 | input_bfd = input_bfd->link_next) | |
4758 | { | |
721956f4 AM |
4759 | for (section = input_bfd->sections; |
4760 | section != NULL; | |
4761 | section = section->next) | |
4762 | { | |
4763 | if (top_id < section->id) | |
4764 | top_id = section->id; | |
4765 | } | |
4766 | } | |
721956f4 AM |
4767 | |
4768 | amt = sizeof (struct map_stub) * (top_id + 1); | |
4769 | htab->stub_group = (struct map_stub *) bfd_zmalloc (amt); | |
4770 | if (htab->stub_group == NULL) | |
4771 | return -1; | |
4772 | ||
4773 | /* We can't use output_bfd->section_count here to find the top output | |
4774 | section index as some sections may have been removed, and | |
4775 | _bfd_strip_section_from_output doesn't renumber the indices. */ | |
4776 | for (section = output_bfd->sections, top_index = 0; | |
4777 | section != NULL; | |
4778 | section = section->next) | |
4779 | { | |
4780 | if (top_index < section->index) | |
4781 | top_index = section->index; | |
4782 | } | |
4783 | ||
4784 | htab->top_index = top_index; | |
4785 | amt = sizeof (asection *) * (top_index + 1); | |
4786 | input_list = (asection **) bfd_malloc (amt); | |
4787 | htab->input_list = input_list; | |
4788 | if (input_list == NULL) | |
4789 | return -1; | |
4790 | ||
4791 | /* For sections we aren't interested in, mark their entries with a | |
4792 | value we can check later. */ | |
4793 | list = input_list + top_index; | |
4794 | do | |
4795 | *list = bfd_abs_section_ptr; | |
4796 | while (list-- != input_list); | |
4797 | ||
4798 | for (section = output_bfd->sections; | |
4799 | section != NULL; | |
4800 | section = section->next) | |
4801 | { | |
4802 | if ((section->flags & SEC_CODE) != 0) | |
4803 | input_list[section->index] = NULL; | |
4804 | } | |
4805 | ||
4806 | return 1; | |
4807 | } | |
4808 | ||
4809 | /* The linker repeatedly calls this function for each input section, | |
4810 | in the order that input sections are linked into output sections. | |
4811 | Build lists of input sections to determine groupings between which | |
4812 | we may insert linker stubs. */ | |
4813 | ||
4814 | void | |
805fc799 | 4815 | ppc64_elf_next_input_section (info, isec) |
721956f4 AM |
4816 | struct bfd_link_info *info; |
4817 | asection *isec; | |
4818 | { | |
4819 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
4820 | ||
805fc799 | 4821 | if (isec->output_section->index <= htab->top_index) |
721956f4 AM |
4822 | { |
4823 | asection **list = htab->input_list + isec->output_section->index; | |
4824 | if (*list != bfd_abs_section_ptr) | |
4825 | { | |
4826 | /* Steal the link_sec pointer for our list. */ | |
4827 | #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec) | |
4828 | /* This happens to make the list in reverse order, | |
4829 | which is what we want. */ | |
4830 | PREV_SEC (isec) = *list; | |
4831 | *list = isec; | |
4832 | } | |
4833 | } | |
4834 | } | |
4835 | ||
4836 | /* See whether we can group stub sections together. Grouping stub | |
4837 | sections may result in fewer stubs. More importantly, we need to | |
4838 | put all .init* and .fini* stubs at the beginning of the .init or | |
4839 | .fini output sections respectively, because glibc splits the | |
4840 | _init and _fini functions into multiple parts. Putting a stub in | |
4841 | the middle of a function is not a good idea. */ | |
4842 | ||
4843 | static void | |
4844 | group_sections (htab, stub_group_size, stubs_always_before_branch) | |
4845 | struct ppc_link_hash_table *htab; | |
4846 | bfd_size_type stub_group_size; | |
4847 | boolean stubs_always_before_branch; | |
4848 | { | |
4849 | asection **list = htab->input_list + htab->top_index; | |
4850 | do | |
4851 | { | |
4852 | asection *tail = *list; | |
4853 | if (tail == bfd_abs_section_ptr) | |
4854 | continue; | |
4855 | while (tail != NULL) | |
4856 | { | |
4857 | asection *curr; | |
4858 | asection *prev; | |
4859 | bfd_size_type total; | |
4860 | ||
4861 | curr = tail; | |
4862 | if (tail->_cooked_size) | |
4863 | total = tail->_cooked_size; | |
4864 | else | |
4865 | total = tail->_raw_size; | |
4866 | while ((prev = PREV_SEC (curr)) != NULL | |
4867 | && ((total += curr->output_offset - prev->output_offset) | |
4868 | < stub_group_size)) | |
4869 | curr = prev; | |
4870 | ||
4871 | /* OK, the size from the start of CURR to the end is less | |
4872 | than stub_group_size and thus can be handled by one stub | |
4873 | section. (or the tail section is itself larger than | |
4874 | stub_group_size, in which case we may be toast.) We | |
4875 | should really be keeping track of the total size of stubs | |
4876 | added here, as stubs contribute to the final output | |
4877 | section size. That's a little tricky, and this way will | |
4878 | only break if stubs added make the total size more than | |
4879 | 2^25, ie. for the default stub_group_size, if stubs total | |
4880 | more than 2834432 bytes, or over 100000 plt call stubs. */ | |
4881 | do | |
4882 | { | |
4883 | prev = PREV_SEC (tail); | |
4884 | /* Set up this stub group. */ | |
4885 | htab->stub_group[tail->id].link_sec = curr; | |
4886 | } | |
4887 | while (tail != curr && (tail = prev) != NULL); | |
4888 | ||
4889 | /* But wait, there's more! Input sections up to stub_group_size | |
4890 | bytes before the stub section can be handled by it too. */ | |
4891 | if (!stubs_always_before_branch) | |
4892 | { | |
4893 | total = 0; | |
4894 | while (prev != NULL | |
4895 | && ((total += tail->output_offset - prev->output_offset) | |
4896 | < stub_group_size)) | |
4897 | { | |
4898 | tail = prev; | |
4899 | prev = PREV_SEC (tail); | |
4900 | htab->stub_group[tail->id].link_sec = curr; | |
4901 | } | |
4902 | } | |
4903 | tail = prev; | |
4904 | } | |
4905 | } | |
4906 | while (list-- != htab->input_list); | |
4907 | free (htab->input_list); | |
4908 | #undef PREV_SEC | |
4909 | } | |
4910 | ||
721956f4 AM |
4911 | /* Determine and set the size of the stub section for a final link. |
4912 | ||
4913 | The basic idea here is to examine all the relocations looking for | |
4914 | PC-relative calls to a target that is unreachable with a "bl" | |
4915 | instruction. */ | |
4916 | ||
4917 | boolean | |
4918 | ppc64_elf_size_stubs (output_bfd, stub_bfd, info, group_size, | |
4919 | add_stub_section, layout_sections_again) | |
4920 | bfd *output_bfd; | |
4921 | bfd *stub_bfd; | |
4922 | struct bfd_link_info *info; | |
4923 | bfd_signed_vma group_size; | |
4924 | asection * (*add_stub_section) PARAMS ((const char *, asection *)); | |
4925 | void (*layout_sections_again) PARAMS ((void)); | |
4926 | { | |
4927 | bfd_size_type stub_group_size; | |
4928 | boolean stubs_always_before_branch; | |
721956f4 AM |
4929 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
4930 | ||
4931 | /* Stash our params away. */ | |
4932 | htab->stub_bfd = stub_bfd; | |
4933 | htab->add_stub_section = add_stub_section; | |
4934 | htab->layout_sections_again = layout_sections_again; | |
4935 | stubs_always_before_branch = group_size < 0; | |
4936 | if (group_size < 0) | |
4937 | stub_group_size = -group_size; | |
4938 | else | |
4939 | stub_group_size = group_size; | |
4940 | if (stub_group_size == 1) | |
4941 | { | |
4942 | /* Default values. */ | |
4943 | stub_group_size = 30720000; | |
4944 | if (htab->has_14bit_branch) | |
4945 | stub_group_size = 30000; | |
4946 | } | |
4947 | ||
4948 | group_sections (htab, stub_group_size, stubs_always_before_branch); | |
4949 | ||
721956f4 AM |
4950 | while (1) |
4951 | { | |
4952 | bfd *input_bfd; | |
4953 | unsigned int bfd_indx; | |
4954 | asection *stub_sec; | |
4955 | boolean stub_changed; | |
4956 | ||
4957 | htab->stub_iteration += 1; | |
4958 | stub_changed = false; | |
4959 | ||
4960 | for (input_bfd = info->input_bfds, bfd_indx = 0; | |
4961 | input_bfd != NULL; | |
4962 | input_bfd = input_bfd->link_next, bfd_indx++) | |
4963 | { | |
4964 | Elf_Internal_Shdr *symtab_hdr; | |
4965 | asection *section; | |
6cdc0ccc | 4966 | Elf_Internal_Sym *local_syms = NULL; |
721956f4 AM |
4967 | |
4968 | /* We'll need the symbol table in a second. */ | |
4969 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
4970 | if (symtab_hdr->sh_info == 0) | |
4971 | continue; | |
4972 | ||
721956f4 AM |
4973 | /* Walk over each section attached to the input bfd. */ |
4974 | for (section = input_bfd->sections; | |
4975 | section != NULL; | |
4976 | section = section->next) | |
4977 | { | |
721956f4 | 4978 | Elf_Internal_Rela *internal_relocs, *irelaend, *irela; |
721956f4 AM |
4979 | |
4980 | /* If there aren't any relocs, then there's nothing more | |
4981 | to do. */ | |
4982 | if ((section->flags & SEC_RELOC) == 0 | |
4983 | || section->reloc_count == 0) | |
4984 | continue; | |
4985 | ||
4986 | /* If this section is a link-once section that will be | |
4987 | discarded, then don't create any stubs. */ | |
4988 | if (section->output_section == NULL | |
4989 | || section->output_section->owner != output_bfd) | |
4990 | continue; | |
4991 | ||
1e2f5b6e AM |
4992 | /* Get the relocs. */ |
4993 | internal_relocs | |
4994 | = _bfd_elf64_link_read_relocs (input_bfd, section, NULL, | |
4995 | (Elf_Internal_Rela *) NULL, | |
4996 | info->keep_memory); | |
721956f4 | 4997 | if (internal_relocs == NULL) |
1e2f5b6e | 4998 | goto error_ret_free_local; |
721956f4 AM |
4999 | |
5000 | /* Now examine each relocation. */ | |
5001 | irela = internal_relocs; | |
5002 | irelaend = irela + section->reloc_count; | |
5003 | for (; irela < irelaend; irela++) | |
5004 | { | |
5005 | unsigned int r_type, r_indx; | |
5006 | enum ppc_stub_type stub_type; | |
5007 | struct ppc_stub_hash_entry *stub_entry; | |
5008 | asection *sym_sec; | |
5009 | bfd_vma sym_value; | |
5010 | bfd_vma destination; | |
5011 | struct ppc_link_hash_entry *hash; | |
5012 | char *stub_name; | |
5013 | const asection *id_sec; | |
5014 | ||
5015 | r_type = ELF64_R_TYPE (irela->r_info); | |
5016 | r_indx = ELF64_R_SYM (irela->r_info); | |
5017 | ||
5018 | if (r_type >= (unsigned int) R_PPC_max) | |
5019 | { | |
5020 | bfd_set_error (bfd_error_bad_value); | |
6cdc0ccc | 5021 | goto error_ret_free_internal; |
721956f4 AM |
5022 | } |
5023 | ||
5024 | /* Only look for stubs on branch instructions. */ | |
5025 | if (r_type != (unsigned int) R_PPC64_REL24 | |
5026 | && r_type != (unsigned int) R_PPC64_REL14 | |
5027 | && r_type != (unsigned int) R_PPC64_REL14_BRTAKEN | |
5028 | && r_type != (unsigned int) R_PPC64_REL14_BRNTAKEN) | |
5029 | continue; | |
5030 | ||
5031 | /* Now determine the call target, its name, value, | |
5032 | section. */ | |
5033 | sym_sec = NULL; | |
5034 | sym_value = 0; | |
5035 | destination = 0; | |
5036 | hash = NULL; | |
5037 | if (r_indx < symtab_hdr->sh_info) | |
5038 | { | |
5039 | /* It's a local symbol. */ | |
5040 | Elf_Internal_Sym *sym; | |
5041 | Elf_Internal_Shdr *hdr; | |
5042 | ||
6cdc0ccc AM |
5043 | if (local_syms == NULL) |
5044 | { | |
5045 | local_syms | |
5046 | = (Elf_Internal_Sym *) symtab_hdr->contents; | |
5047 | if (local_syms == NULL) | |
5048 | local_syms | |
5049 | = bfd_elf_get_elf_syms (input_bfd, symtab_hdr, | |
5050 | symtab_hdr->sh_info, 0, | |
5051 | NULL, NULL, NULL); | |
5052 | if (local_syms == NULL) | |
5053 | goto error_ret_free_internal; | |
5054 | } | |
721956f4 AM |
5055 | sym = local_syms + r_indx; |
5056 | hdr = elf_elfsections (input_bfd)[sym->st_shndx]; | |
5057 | sym_sec = hdr->bfd_section; | |
5058 | if (ELF_ST_TYPE (sym->st_info) != STT_SECTION) | |
5059 | sym_value = sym->st_value; | |
5060 | destination = (sym_value + irela->r_addend | |
5061 | + sym_sec->output_offset | |
5062 | + sym_sec->output_section->vma); | |
5063 | } | |
5064 | else | |
5065 | { | |
5066 | /* It's an external symbol. */ | |
5067 | int e_indx; | |
5068 | ||
5069 | e_indx = r_indx - symtab_hdr->sh_info; | |
5070 | hash = ((struct ppc_link_hash_entry *) | |
5071 | elf_sym_hashes (input_bfd)[e_indx]); | |
5072 | ||
5073 | while (hash->elf.root.type == bfd_link_hash_indirect | |
5074 | || hash->elf.root.type == bfd_link_hash_warning) | |
5075 | hash = ((struct ppc_link_hash_entry *) | |
5076 | hash->elf.root.u.i.link); | |
5077 | ||
5078 | if (hash->elf.root.type == bfd_link_hash_defined | |
5079 | || hash->elf.root.type == bfd_link_hash_defweak) | |
5080 | { | |
5081 | sym_sec = hash->elf.root.u.def.section; | |
5082 | sym_value = hash->elf.root.u.def.value; | |
5083 | if (sym_sec->output_section != NULL) | |
5084 | destination = (sym_value + irela->r_addend | |
5085 | + sym_sec->output_offset | |
5086 | + sym_sec->output_section->vma); | |
5087 | } | |
5088 | else if (hash->elf.root.type == bfd_link_hash_undefweak) | |
5089 | ; | |
5090 | else if (hash->elf.root.type == bfd_link_hash_undefined) | |
5091 | ; | |
5092 | else | |
5093 | { | |
5094 | bfd_set_error (bfd_error_bad_value); | |
5095 | goto error_ret_free_internal; | |
5096 | } | |
5097 | } | |
5098 | ||
5099 | /* Determine what (if any) linker stub is needed. */ | |
5100 | stub_type = ppc_type_of_stub (section, irela, &hash, | |
5101 | destination); | |
5102 | if (stub_type == ppc_stub_none) | |
5103 | continue; | |
5104 | ||
5105 | /* Support for grouping stub sections. */ | |
5106 | id_sec = htab->stub_group[section->id].link_sec; | |
5107 | ||
5108 | /* Get the name of this stub. */ | |
5109 | stub_name = ppc_stub_name (id_sec, sym_sec, hash, irela); | |
5110 | if (!stub_name) | |
5111 | goto error_ret_free_internal; | |
5112 | ||
5113 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, | |
5114 | stub_name, false, false); | |
5115 | if (stub_entry != NULL) | |
5116 | { | |
5117 | /* The proper stub has already been created. */ | |
5118 | free (stub_name); | |
5119 | continue; | |
5120 | } | |
5121 | ||
5122 | stub_entry = ppc_add_stub (stub_name, section, htab); | |
5123 | if (stub_entry == NULL) | |
5124 | { | |
5125 | free (stub_name); | |
6cdc0ccc AM |
5126 | error_ret_free_internal: |
5127 | if (elf_section_data (section)->relocs == NULL) | |
5128 | free (internal_relocs); | |
5129 | error_ret_free_local: | |
5130 | if (local_syms != NULL | |
5131 | && (symtab_hdr->contents | |
5132 | != (unsigned char *) local_syms)) | |
5133 | free (local_syms); | |
5134 | return false; | |
721956f4 AM |
5135 | } |
5136 | ||
5137 | stub_entry->target_value = sym_value; | |
5138 | stub_entry->target_section = sym_sec; | |
5139 | stub_entry->stub_type = stub_type; | |
5140 | stub_entry->h = hash; | |
5141 | stub_changed = true; | |
5142 | } | |
5143 | ||
5144 | /* We're done with the internal relocs, free them. */ | |
6cdc0ccc | 5145 | if (elf_section_data (section)->relocs != internal_relocs) |
1e2f5b6e | 5146 | free (internal_relocs); |
721956f4 | 5147 | } |
6cdc0ccc AM |
5148 | |
5149 | if (local_syms != NULL | |
5150 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
5151 | { | |
5152 | if (!info->keep_memory) | |
5153 | free (local_syms); | |
5154 | else | |
5155 | symtab_hdr->contents = (unsigned char *) local_syms; | |
5156 | } | |
721956f4 AM |
5157 | } |
5158 | ||
5159 | if (!stub_changed) | |
5160 | break; | |
5161 | ||
5162 | /* OK, we've added some stubs. Find out the new size of the | |
5163 | stub sections. */ | |
5164 | for (stub_sec = htab->stub_bfd->sections; | |
5165 | stub_sec != NULL; | |
5166 | stub_sec = stub_sec->next) | |
5167 | { | |
5168 | stub_sec->_raw_size = 0; | |
5169 | stub_sec->_cooked_size = 0; | |
5170 | } | |
5171 | htab->sbrlt->_raw_size = 0; | |
5172 | htab->sbrlt->_cooked_size = 0; | |
5173 | ||
5174 | bfd_hash_traverse (&htab->stub_hash_table, ppc_size_one_stub, htab); | |
5175 | ||
5176 | /* Ask the linker to do its stuff. */ | |
5177 | (*htab->layout_sections_again) (); | |
5178 | } | |
5179 | ||
afbe61cf AM |
5180 | /* It would be nice to strip .branch_lt from the output if the |
5181 | section is empty, but it's too late. If we strip sections here, | |
5182 | the dynamic symbol table is corrupted since the section symbol | |
5183 | for the stripped section isn't written. */ | |
721956f4 | 5184 | |
6cdc0ccc | 5185 | return true; |
721956f4 AM |
5186 | } |
5187 | ||
5188 | /* Called after we have determined section placement. If sections | |
805fc799 | 5189 | move, we'll be called again. Provide a value for TOCstart. */ |
721956f4 | 5190 | |
805fc799 AM |
5191 | bfd_vma |
5192 | ppc64_elf_toc (obfd) | |
5d1634d7 | 5193 | bfd *obfd; |
721956f4 | 5194 | { |
805fc799 AM |
5195 | asection *s; |
5196 | bfd_vma TOCstart; | |
721956f4 | 5197 | |
805fc799 AM |
5198 | /* The TOC consists of sections .got, .toc, .tocbss, .plt in that |
5199 | order. The TOC starts where the first of these sections starts. */ | |
5200 | s = bfd_get_section_by_name (obfd, ".got"); | |
5201 | if (s == NULL) | |
5202 | s = bfd_get_section_by_name (obfd, ".toc"); | |
5203 | if (s == NULL) | |
5204 | s = bfd_get_section_by_name (obfd, ".tocbss"); | |
5205 | if (s == NULL) | |
5206 | s = bfd_get_section_by_name (obfd, ".plt"); | |
5207 | if (s == NULL) | |
5208 | { | |
5209 | /* This may happen for | |
5210 | o references to TOC base (SYM@toc / TOC[tc0]) without a | |
5211 | .toc directive | |
5212 | o bad linker script | |
5213 | o --gc-sections and empty TOC sections | |
5214 | ||
5215 | FIXME: Warn user? */ | |
5216 | ||
5217 | /* Look for a likely section. We probably won't even be | |
5218 | using TOCstart. */ | |
5219 | for (s = obfd->sections; s != NULL; s = s->next) | |
5220 | if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY)) | |
5221 | == (SEC_ALLOC | SEC_SMALL_DATA)) | |
5222 | break; | |
721956f4 | 5223 | if (s == NULL) |
805fc799 AM |
5224 | for (s = obfd->sections; s != NULL; s = s->next) |
5225 | if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA)) | |
5226 | == (SEC_ALLOC | SEC_SMALL_DATA)) | |
5227 | break; | |
721956f4 | 5228 | if (s == NULL) |
805fc799 AM |
5229 | for (s = obfd->sections; s != NULL; s = s->next) |
5230 | if ((s->flags & (SEC_ALLOC | SEC_READONLY)) == SEC_ALLOC) | |
5231 | break; | |
721956f4 | 5232 | if (s == NULL) |
805fc799 AM |
5233 | for (s = obfd->sections; s != NULL; s = s->next) |
5234 | if ((s->flags & SEC_ALLOC) == SEC_ALLOC) | |
5235 | break; | |
5236 | } | |
721956f4 | 5237 | |
805fc799 AM |
5238 | TOCstart = 0; |
5239 | if (s != NULL) | |
5240 | TOCstart = s->output_section->vma + s->output_offset; | |
721956f4 | 5241 | |
805fc799 | 5242 | return TOCstart; |
721956f4 AM |
5243 | } |
5244 | ||
5245 | /* Build all the stubs associated with the current output file. | |
5246 | The stubs are kept in a hash table attached to the main linker | |
5247 | hash table. This function is called via gldelf64ppc_finish. */ | |
5248 | ||
5249 | boolean | |
5250 | ppc64_elf_build_stubs (info) | |
5251 | struct bfd_link_info *info; | |
5d1634d7 AM |
5252 | { |
5253 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
721956f4 | 5254 | asection *stub_sec; |
5d1634d7 AM |
5255 | bfd_vma plt_r2; |
5256 | bfd_byte *p; | |
5257 | ||
721956f4 AM |
5258 | for (stub_sec = htab->stub_bfd->sections; |
5259 | stub_sec != NULL; | |
5260 | stub_sec = stub_sec->next) | |
5261 | { | |
5262 | bfd_size_type size; | |
5263 | ||
5264 | /* Allocate memory to hold the linker stubs. */ | |
5265 | size = stub_sec->_raw_size; | |
5266 | if (size != 0) | |
5267 | { | |
5268 | stub_sec->contents = (bfd_byte *) bfd_zalloc (htab->stub_bfd, size); | |
5269 | if (stub_sec->contents == NULL) | |
5270 | return false; | |
5271 | } | |
5272 | stub_sec->_cooked_size = 0; | |
5273 | } | |
5d1634d7 | 5274 | |
721956f4 | 5275 | if (htab->splt != NULL) |
5d1634d7 | 5276 | { |
721956f4 AM |
5277 | /* Build the .glink plt call stub. */ |
5278 | plt_r2 = (htab->splt->output_offset | |
5279 | + htab->splt->output_section->vma | |
5280 | - elf_gp (htab->splt->output_section->owner) | |
5281 | - TOC_BASE_OFF); | |
5282 | p = htab->sglink->contents; | |
5283 | p = build_plt_stub (htab->sglink->owner, p, (int) plt_r2, 1); | |
5284 | while (p - htab->sglink->contents < GLINK_CALL_STUB_SIZE) | |
5285 | { | |
5286 | bfd_put_32 (htab->sglink->owner, NOP, p); | |
5287 | p += 4; | |
5288 | } | |
5289 | htab->sglink->_cooked_size = p - htab->sglink->contents; | |
5290 | ||
5291 | /* Use reloc_count to count entries. */ | |
5292 | htab->sglink->reloc_count = 0; | |
5d1634d7 | 5293 | } |
5d1634d7 | 5294 | |
721956f4 AM |
5295 | if (htab->sbrlt->_raw_size != 0) |
5296 | { | |
5297 | htab->sbrlt->contents = (bfd_byte *) bfd_zalloc (htab->sbrlt->owner, | |
5298 | htab->sbrlt->_raw_size); | |
5299 | if (htab->sbrlt->contents == NULL) | |
5300 | return false; | |
5301 | } | |
5d1634d7 | 5302 | |
721956f4 AM |
5303 | /* Build the stubs as directed by the stub hash table. */ |
5304 | bfd_hash_traverse (&htab->stub_hash_table, ppc_build_one_stub, info); | |
5d1634d7 AM |
5305 | htab->sglink->reloc_count = 0; |
5306 | ||
721956f4 AM |
5307 | for (stub_sec = htab->stub_bfd->sections; |
5308 | stub_sec != NULL; | |
5309 | stub_sec = stub_sec->next) | |
5310 | { | |
5311 | if (stub_sec->_raw_size != stub_sec->_cooked_size) | |
5312 | break; | |
5313 | } | |
5d1634d7 | 5314 | |
721956f4 | 5315 | if (stub_sec != NULL |
5d1634d7 AM |
5316 | || htab->sglink->_raw_size != htab->sglink->_cooked_size) |
5317 | { | |
721956f4 AM |
5318 | htab->stub_error = true; |
5319 | (*_bfd_error_handler) (_("stubs don't match calculated size")); | |
5d1634d7 | 5320 | } |
721956f4 AM |
5321 | |
5322 | return !htab->stub_error; | |
5bd4f169 AM |
5323 | } |
5324 | ||
5325 | /* Set up any other section flags and such that may be necessary. */ | |
5326 | ||
5327 | static boolean | |
5328 | ppc64_elf_fake_sections (abfd, shdr, asect) | |
5329 | bfd *abfd ATTRIBUTE_UNUSED; | |
5330 | Elf64_Internal_Shdr *shdr; | |
5331 | asection *asect; | |
5332 | { | |
5333 | if ((asect->flags & SEC_EXCLUDE) != 0) | |
5334 | shdr->sh_flags |= SHF_EXCLUDE; | |
5335 | ||
5336 | if ((asect->flags & SEC_SORT_ENTRIES) != 0) | |
5337 | shdr->sh_type = SHT_ORDERED; | |
5338 | ||
5339 | return true; | |
5340 | } | |
5341 | ||
5342 | /* The RELOCATE_SECTION function is called by the ELF backend linker | |
5343 | to handle the relocations for a section. | |
5344 | ||
5345 | The relocs are always passed as Rela structures; if the section | |
5346 | actually uses Rel structures, the r_addend field will always be | |
5347 | zero. | |
5348 | ||
5349 | This function is responsible for adjust the section contents as | |
5350 | necessary, and (if using Rela relocs and generating a | |
5351 | relocateable output file) adjusting the reloc addend as | |
5352 | necessary. | |
5353 | ||
5354 | This function does not have to worry about setting the reloc | |
5355 | address or the reloc symbol index. | |
5356 | ||
5357 | LOCAL_SYMS is a pointer to the swapped in local symbols. | |
5358 | ||
5359 | LOCAL_SECTIONS is an array giving the section in the input file | |
5360 | corresponding to the st_shndx field of each local symbol. | |
5361 | ||
5362 | The global hash table entry for the global symbols can be found | |
5363 | via elf_sym_hashes (input_bfd). | |
5364 | ||
5365 | When generating relocateable output, this function must handle | |
5366 | STB_LOCAL/STT_SECTION symbols specially. The output symbol is | |
5367 | going to be the section symbol corresponding to the output | |
5368 | section, which means that the addend must be adjusted | |
5369 | accordingly. */ | |
5370 | ||
5371 | static boolean | |
5372 | ppc64_elf_relocate_section (output_bfd, info, input_bfd, input_section, | |
5373 | contents, relocs, local_syms, local_sections) | |
5374 | bfd *output_bfd; | |
5375 | struct bfd_link_info *info; | |
5376 | bfd *input_bfd; | |
5377 | asection *input_section; | |
5378 | bfd_byte *contents; | |
5379 | Elf_Internal_Rela *relocs; | |
5380 | Elf_Internal_Sym *local_syms; | |
5381 | asection **local_sections; | |
5382 | { | |
65f38f15 | 5383 | struct ppc_link_hash_table *htab; |
5bd4f169 AM |
5384 | Elf_Internal_Shdr *symtab_hdr; |
5385 | struct elf_link_hash_entry **sym_hashes; | |
5bd4f169 AM |
5386 | Elf_Internal_Rela *rel; |
5387 | Elf_Internal_Rela *relend; | |
5bd4f169 AM |
5388 | bfd_vma *local_got_offsets; |
5389 | bfd_vma TOCstart; | |
5390 | boolean ret = true; | |
41bd81ab | 5391 | boolean is_opd; |
96e0dda4 AM |
5392 | /* Disabled until we sort out how ld should choose 'y' vs 'at'. */ |
5393 | boolean is_power4 = false; | |
5bd4f169 | 5394 | |
b491616a AM |
5395 | if (info->relocateable) |
5396 | return true; | |
5397 | ||
65f38f15 | 5398 | /* Initialize howto table if needed. */ |
5bd4f169 | 5399 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) |
5bd4f169 AM |
5400 | ppc_howto_init (); |
5401 | ||
65f38f15 | 5402 | htab = ppc_hash_table (info); |
5bd4f169 | 5403 | local_got_offsets = elf_local_got_offsets (input_bfd); |
5bd4f169 | 5404 | TOCstart = elf_gp (output_bfd); |
5bd4f169 AM |
5405 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; |
5406 | sym_hashes = elf_sym_hashes (input_bfd); | |
1e2f5b6e | 5407 | is_opd = elf_section_data (input_section)->tdata != NULL; |
65f38f15 | 5408 | |
5bd4f169 AM |
5409 | rel = relocs; |
5410 | relend = relocs + input_section->reloc_count; | |
5411 | for (; rel < relend; rel++) | |
5412 | { | |
5413 | enum elf_ppc_reloc_type r_type; | |
5414 | bfd_vma offset; | |
5415 | bfd_vma addend; | |
5416 | bfd_reloc_status_type r; | |
5417 | Elf_Internal_Sym *sym; | |
5418 | asection *sec; | |
5419 | struct elf_link_hash_entry *h; | |
721956f4 | 5420 | struct elf_link_hash_entry *fdh; |
5bd4f169 | 5421 | const char *sym_name; |
5bd4f169 AM |
5422 | unsigned long r_symndx; |
5423 | bfd_vma relocation; | |
65f38f15 | 5424 | boolean unresolved_reloc; |
ef60b7ff | 5425 | boolean warned; |
dc810e39 | 5426 | long insn; |
721956f4 AM |
5427 | struct ppc_stub_hash_entry *stub_entry; |
5428 | bfd_vma max_br_offset; | |
5429 | bfd_vma from; | |
5bd4f169 AM |
5430 | |
5431 | r_type = (enum elf_ppc_reloc_type) ELF64_R_TYPE (rel->r_info); | |
5bd4f169 | 5432 | r_symndx = ELF64_R_SYM (rel->r_info); |
65f38f15 AM |
5433 | offset = rel->r_offset; |
5434 | addend = rel->r_addend; | |
5435 | r = bfd_reloc_other; | |
5436 | sym = (Elf_Internal_Sym *) 0; | |
5437 | sec = (asection *) 0; | |
5438 | h = (struct elf_link_hash_entry *) 0; | |
5439 | sym_name = (const char *) 0; | |
5440 | unresolved_reloc = false; | |
ef60b7ff | 5441 | warned = false; |
65f38f15 | 5442 | |
5bd4f169 AM |
5443 | if (r_type == R_PPC64_TOC) |
5444 | { | |
5445 | /* Relocation value is TOC base. Symbol is ignored. */ | |
5446 | relocation = TOCstart + TOC_BASE_OFF; | |
5447 | } | |
5448 | else if (r_symndx < symtab_hdr->sh_info) | |
5449 | { | |
5450 | /* It's a local symbol. */ | |
5451 | sym = local_syms + r_symndx; | |
5452 | sec = local_sections[r_symndx]; | |
5453 | sym_name = "<local symbol>"; | |
5454 | ||
f8df10f4 | 5455 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, sec, rel); |
f46c2da6 AM |
5456 | /* rel may have changed, update our copy of addend. */ |
5457 | addend = rel->r_addend; | |
1e2f5b6e AM |
5458 | |
5459 | if (elf_section_data (sec) != NULL) | |
5460 | { | |
5461 | long *opd_sym_adjust; | |
5462 | ||
5463 | opd_sym_adjust = (long *) elf_section_data (sec)->tdata; | |
5464 | if (opd_sym_adjust != NULL && sym->st_value % 24 == 0) | |
5465 | relocation += opd_sym_adjust[sym->st_value / 24]; | |
5466 | } | |
5bd4f169 AM |
5467 | } |
5468 | else | |
5469 | { | |
5470 | /* It's a global symbol. */ | |
5471 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
5472 | while (h->root.type == bfd_link_hash_indirect | |
5473 | || h->root.type == bfd_link_hash_warning) | |
5474 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
5475 | sym_name = h->root.root.string; | |
65f38f15 | 5476 | relocation = 0; |
5bd4f169 AM |
5477 | if (h->root.type == bfd_link_hash_defined |
5478 | || h->root.type == bfd_link_hash_defweak) | |
5479 | { | |
5480 | sec = h->root.u.def.section; | |
65f38f15 AM |
5481 | if (sec->output_section == NULL) |
5482 | /* Set a flag that will be cleared later if we find a | |
5483 | relocation value for this symbol. output_section | |
5484 | is typically NULL for symbols satisfied by a shared | |
5485 | library. */ | |
5486 | unresolved_reloc = true; | |
5bd4f169 AM |
5487 | else |
5488 | relocation = (h->root.u.def.value | |
5489 | + sec->output_section->vma | |
5490 | + sec->output_offset); | |
5491 | } | |
5492 | else if (h->root.type == bfd_link_hash_undefweak) | |
65f38f15 | 5493 | ; |
671bae9c | 5494 | else if (info->shared |
65f38f15 AM |
5495 | && (!info->symbolic || info->allow_shlib_undefined) |
5496 | && !info->no_undefined | |
5497 | && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT) | |
5498 | ; | |
5bd4f169 AM |
5499 | else |
5500 | { | |
5501 | if (! ((*info->callbacks->undefined_symbol) | |
5502 | (info, h->root.root.string, input_bfd, input_section, | |
65f38f15 AM |
5503 | offset, (!info->shared |
5504 | || info->no_undefined | |
5505 | || ELF_ST_VISIBILITY (h->other))))) | |
5bd4f169 | 5506 | return false; |
ef60b7ff | 5507 | warned = true; |
5bd4f169 AM |
5508 | } |
5509 | } | |
5510 | ||
65f38f15 | 5511 | /* First handle relocations that tweak non-addend part of insn. */ |
86c76c7b | 5512 | insn = 0; |
65f38f15 | 5513 | switch (r_type) |
5bd4f169 AM |
5514 | { |
5515 | default: | |
65f38f15 | 5516 | break; |
5bd4f169 | 5517 | |
65f38f15 AM |
5518 | /* Branch taken prediction relocations. */ |
5519 | case R_PPC64_ADDR14_BRTAKEN: | |
5520 | case R_PPC64_REL14_BRTAKEN: | |
cedb70c5 KH |
5521 | insn = 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */ |
5522 | /* Fall thru. */ | |
65f38f15 | 5523 | |
86c76c7b | 5524 | /* Branch not taken prediction relocations. */ |
65f38f15 AM |
5525 | case R_PPC64_ADDR14_BRNTAKEN: |
5526 | case R_PPC64_REL14_BRNTAKEN: | |
86c76c7b | 5527 | insn |= bfd_get_32 (output_bfd, contents + offset) & ~(0x01 << 21); |
96e0dda4 AM |
5528 | if (is_power4) |
5529 | { | |
5530 | /* Set 'a' bit. This is 0b00010 in BO field for branch | |
5531 | on CR(BI) insns (BO == 001at or 011at), and 0b01000 | |
5532 | for branch on CTR insns (BO == 1a00t or 1a01t). */ | |
5533 | if ((insn & (0x14 << 21)) == (0x04 << 21)) | |
5534 | insn |= 0x02 << 21; | |
5535 | else if ((insn & (0x14 << 21)) == (0x10 << 21)) | |
5536 | insn |= 0x08 << 21; | |
5537 | else | |
5538 | break; | |
5539 | } | |
65f38f15 | 5540 | else |
96e0dda4 | 5541 | { |
805fc799 AM |
5542 | from = (offset |
5543 | + input_section->output_offset | |
5544 | + input_section->output_section->vma); | |
5545 | ||
96e0dda4 | 5546 | /* Invert 'y' bit if not the default. */ |
805fc799 | 5547 | if ((bfd_signed_vma) (relocation + addend - from) < 0) |
96e0dda4 AM |
5548 | insn ^= 0x01 << 21; |
5549 | } | |
86c76c7b | 5550 | |
65f38f15 AM |
5551 | bfd_put_32 (output_bfd, (bfd_vma) insn, contents + offset); |
5552 | break; | |
5bd4f169 | 5553 | |
65f38f15 | 5554 | case R_PPC64_REL24: |
721956f4 AM |
5555 | /* A REL24 branching to a linkage function is followed by a |
5556 | nop. We replace the nop with a ld in order to restore | |
5557 | the TOC base pointer. Only calls to shared objects need | |
5558 | to alter the TOC base. These are recognized by their | |
5559 | need for a PLT entry. */ | |
5bd4f169 | 5560 | if (h != NULL |
721956f4 AM |
5561 | && (fdh = ((struct ppc_link_hash_entry *) h)->oh) != NULL |
5562 | && fdh->plt.offset != (bfd_vma) -1 | |
5563 | && (stub_entry = ppc_get_stub_entry (input_section, sec, fdh, | |
5564 | rel, htab)) != NULL) | |
41bd81ab | 5565 | { |
721956f4 AM |
5566 | boolean can_plt_call = 0; |
5567 | ||
41bd81ab AM |
5568 | if (offset + 8 <= input_section->_cooked_size) |
5569 | { | |
721956f4 AM |
5570 | insn = bfd_get_32 (input_bfd, contents + offset + 4); |
5571 | if (insn == NOP | |
5572 | || insn == CROR_151515 || insn == CROR_313131) | |
41bd81ab | 5573 | { |
721956f4 AM |
5574 | bfd_put_32 (input_bfd, (bfd_vma) LD_R2_40R1, |
5575 | contents + offset + 4); | |
5576 | can_plt_call = 1; | |
41bd81ab | 5577 | } |
5bd4f169 | 5578 | } |
721956f4 AM |
5579 | |
5580 | if (!can_plt_call) | |
5581 | { | |
5582 | /* If this is a plain branch rather than a branch | |
5583 | and link, don't require a nop. */ | |
5584 | insn = bfd_get_32 (input_bfd, contents + offset); | |
5585 | if ((insn & 1) == 0) | |
5586 | can_plt_call = 1; | |
5587 | } | |
5588 | ||
5589 | if (can_plt_call) | |
5590 | { | |
5591 | relocation = (stub_entry->stub_offset | |
5592 | + stub_entry->stub_sec->output_offset | |
5593 | + stub_entry->stub_sec->output_section->vma); | |
5594 | addend = 0; | |
5595 | unresolved_reloc = false; | |
5596 | } | |
5bd4f169 | 5597 | } |
e86ce104 AM |
5598 | |
5599 | if (h != NULL | |
5600 | && h->root.type == bfd_link_hash_undefweak | |
721956f4 AM |
5601 | && relocation == 0 |
5602 | && addend == 0) | |
e86ce104 | 5603 | { |
721956f4 AM |
5604 | /* Tweak calls to undefined weak functions to point at a |
5605 | blr. We can thus call a weak function without first | |
5606 | checking whether the function is defined. We have a | |
5607 | blr at the end of .sfpr. */ | |
805fc799 | 5608 | BFD_ASSERT (htab->sfpr->_raw_size != 0); |
721956f4 AM |
5609 | relocation = (htab->sfpr->_raw_size - 4 |
5610 | + htab->sfpr->output_offset | |
5611 | + htab->sfpr->output_section->vma); | |
5612 | from = (offset | |
5613 | + input_section->output_offset | |
5614 | + input_section->output_section->vma); | |
805fc799 | 5615 | |
721956f4 AM |
5616 | /* But let's not be silly about it. If the blr isn't in |
5617 | reach, just go to the next instruction. */ | |
805fc799 AM |
5618 | if (relocation - from + (1 << 25) >= (1 << 26) |
5619 | || htab->sfpr->_raw_size == 0) | |
721956f4 | 5620 | relocation = from + 4; |
e86ce104 | 5621 | } |
65f38f15 AM |
5622 | break; |
5623 | } | |
5bd4f169 | 5624 | |
65f38f15 AM |
5625 | /* Set `addend'. */ |
5626 | switch (r_type) | |
5627 | { | |
5628 | default: | |
5629 | (*_bfd_error_handler) | |
5630 | (_("%s: unknown relocation type %d for symbol %s"), | |
5631 | bfd_archive_filename (input_bfd), (int) r_type, sym_name); | |
5bd4f169 | 5632 | |
65f38f15 AM |
5633 | bfd_set_error (bfd_error_bad_value); |
5634 | ret = false; | |
5635 | continue; | |
5bd4f169 | 5636 | |
65f38f15 AM |
5637 | case R_PPC64_NONE: |
5638 | case R_PPC_GNU_VTINHERIT: | |
5639 | case R_PPC_GNU_VTENTRY: | |
5640 | continue; | |
5bd4f169 AM |
5641 | |
5642 | /* GOT16 relocations. Like an ADDR16 using the symbol's | |
5643 | address in the GOT as relocation value instead of the | |
5644 | symbols value itself. Also, create a GOT entry for the | |
5645 | symbol and put the symbol value there. */ | |
65f38f15 AM |
5646 | case R_PPC64_GOT16: |
5647 | case R_PPC64_GOT16_LO: | |
5648 | case R_PPC64_GOT16_HI: | |
5649 | case R_PPC64_GOT16_HA: | |
5650 | case R_PPC64_GOT16_DS: | |
5651 | case R_PPC64_GOT16_LO_DS: | |
5bd4f169 AM |
5652 | { |
5653 | /* Relocation is to the entry for this symbol in the global | |
5654 | offset table. */ | |
5655 | bfd_vma off; | |
65f38f15 AM |
5656 | |
5657 | if (htab->sgot == NULL) | |
5658 | abort (); | |
5bd4f169 AM |
5659 | |
5660 | if (h != NULL) | |
5661 | { | |
65f38f15 | 5662 | boolean dyn; |
5bd4f169 | 5663 | |
65f38f15 AM |
5664 | off = h->got.offset; |
5665 | dyn = htab->elf.dynamic_sections_created; | |
5666 | if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info, h) | |
5bd4f169 | 5667 | || (info->shared |
65f38f15 AM |
5668 | && (info->symbolic |
5669 | || h->dynindx == -1 | |
5670 | || (h->elf_link_hash_flags | |
5671 | & ELF_LINK_FORCED_LOCAL)) | |
5bd4f169 AM |
5672 | && (h->elf_link_hash_flags |
5673 | & ELF_LINK_HASH_DEF_REGULAR))) | |
5674 | { | |
5675 | /* This is actually a static link, or it is a | |
5676 | -Bsymbolic link and the symbol is defined | |
65f38f15 AM |
5677 | locally, or the symbol was forced to be local |
5678 | because of a version file. We must initialize | |
5679 | this entry in the global offset table. Since the | |
5680 | offset must always be a multiple of 8, we use the | |
5681 | least significant bit to record whether we have | |
5bd4f169 AM |
5682 | initialized it already. |
5683 | ||
65f38f15 | 5684 | When doing a dynamic link, we create a .rel.got |
5bd4f169 AM |
5685 | relocation entry to initialize the value. This |
5686 | is done in the finish_dynamic_symbol routine. */ | |
5687 | if ((off & 1) != 0) | |
5688 | off &= ~1; | |
5689 | else | |
5690 | { | |
5691 | bfd_put_64 (output_bfd, relocation, | |
65f38f15 | 5692 | htab->sgot->contents + off); |
5bd4f169 AM |
5693 | h->got.offset |= 1; |
5694 | } | |
5695 | } | |
65f38f15 AM |
5696 | else |
5697 | unresolved_reloc = false; | |
5bd4f169 AM |
5698 | } |
5699 | else | |
5700 | { | |
65f38f15 AM |
5701 | if (local_got_offsets == NULL) |
5702 | abort (); | |
5bd4f169 AM |
5703 | |
5704 | off = local_got_offsets[r_symndx]; | |
5705 | ||
65f38f15 | 5706 | /* The offset must always be a multiple of 8. We use |
5bd4f169 AM |
5707 | the least significant bit to record whether we have |
5708 | already processed this entry. */ | |
5709 | if ((off & 1) != 0) | |
5710 | off &= ~1; | |
5711 | else | |
5712 | { | |
65f38f15 AM |
5713 | bfd_put_64 (output_bfd, relocation, |
5714 | htab->sgot->contents + off); | |
5bd4f169 AM |
5715 | |
5716 | if (info->shared) | |
5717 | { | |
5bd4f169 | 5718 | Elf_Internal_Rela outrel; |
65f38f15 | 5719 | Elf64_External_Rela *loc; |
5bd4f169 AM |
5720 | |
5721 | /* We need to generate a R_PPC64_RELATIVE reloc | |
5722 | for the dynamic linker. */ | |
65f38f15 AM |
5723 | outrel.r_offset = (htab->sgot->output_section->vma |
5724 | + htab->sgot->output_offset | |
5bd4f169 AM |
5725 | + off); |
5726 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
5727 | outrel.r_addend = relocation; | |
65f38f15 AM |
5728 | loc = (Elf64_External_Rela *) htab->srelgot->contents; |
5729 | loc += htab->srelgot->reloc_count++; | |
5730 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); | |
5bd4f169 AM |
5731 | } |
5732 | ||
5733 | local_got_offsets[r_symndx] |= 1; | |
5734 | } | |
5735 | } | |
5736 | ||
65f38f15 AM |
5737 | if (off >= (bfd_vma) -2) |
5738 | abort (); | |
5739 | ||
5740 | relocation = htab->sgot->output_offset + off; | |
5741 | ||
5bd4f169 AM |
5742 | /* TOC base (r2) is TOC start plus 0x8000. */ |
5743 | addend -= TOC_BASE_OFF; | |
5bd4f169 | 5744 | } |
65f38f15 AM |
5745 | break; |
5746 | ||
5747 | case R_PPC64_PLT16_HA: | |
5748 | case R_PPC64_PLT16_HI: | |
5749 | case R_PPC64_PLT16_LO: | |
5750 | case R_PPC64_PLT32: | |
5751 | case R_PPC64_PLT64: | |
5752 | /* Relocation is to the entry for this symbol in the | |
5753 | procedure linkage table. */ | |
5754 | ||
5755 | /* Resolve a PLT reloc against a local symbol directly, | |
5756 | without using the procedure linkage table. */ | |
5757 | if (h == NULL) | |
5758 | break; | |
5759 | ||
5760 | if (h->plt.offset == (bfd_vma) -1 | |
5761 | || htab->splt == NULL) | |
5762 | { | |
5763 | /* We didn't make a PLT entry for this symbol. This | |
5764 | happens when statically linking PIC code, or when | |
5765 | using -Bsymbolic. */ | |
5766 | break; | |
5767 | } | |
5768 | ||
5769 | relocation = (htab->splt->output_section->vma | |
5770 | + htab->splt->output_offset | |
5771 | + h->plt.offset); | |
5772 | unresolved_reloc = false; | |
5773 | break; | |
5bd4f169 AM |
5774 | |
5775 | /* TOC16 relocs. We want the offset relative to the TOC base, | |
5776 | which is the address of the start of the TOC plus 0x8000. | |
5777 | The TOC consists of sections .got, .toc, .tocbss, and .plt, | |
5778 | in this order. */ | |
65f38f15 AM |
5779 | case R_PPC64_TOC16: |
5780 | case R_PPC64_TOC16_LO: | |
5781 | case R_PPC64_TOC16_HI: | |
5782 | case R_PPC64_TOC16_DS: | |
5783 | case R_PPC64_TOC16_LO_DS: | |
5784 | case R_PPC64_TOC16_HA: | |
5bd4f169 | 5785 | addend -= TOCstart + TOC_BASE_OFF; |
5bd4f169 AM |
5786 | break; |
5787 | ||
5788 | /* Relocate against the beginning of the section. */ | |
65f38f15 AM |
5789 | case R_PPC64_SECTOFF: |
5790 | case R_PPC64_SECTOFF_LO: | |
5791 | case R_PPC64_SECTOFF_HI: | |
5792 | case R_PPC64_SECTOFF_DS: | |
5793 | case R_PPC64_SECTOFF_LO_DS: | |
5794 | case R_PPC64_SECTOFF_HA: | |
5795 | if (sec != (asection *) 0) | |
5796 | addend -= sec->output_section->vma; | |
5bd4f169 AM |
5797 | break; |
5798 | ||
721956f4 AM |
5799 | case R_PPC64_REL14: |
5800 | case R_PPC64_REL14_BRNTAKEN: | |
5801 | case R_PPC64_REL14_BRTAKEN: | |
5d1634d7 AM |
5802 | case R_PPC64_REL24: |
5803 | break; | |
5804 | ||
65f38f15 AM |
5805 | /* Relocations that may need to be propagated if this is a |
5806 | dynamic object. */ | |
65f38f15 AM |
5807 | case R_PPC64_REL32: |
5808 | case R_PPC64_REL64: | |
5809 | case R_PPC64_ADDR14: | |
5810 | case R_PPC64_ADDR14_BRNTAKEN: | |
5811 | case R_PPC64_ADDR14_BRTAKEN: | |
5812 | case R_PPC64_ADDR16: | |
5813 | case R_PPC64_ADDR16_DS: | |
5814 | case R_PPC64_ADDR16_HA: | |
5815 | case R_PPC64_ADDR16_HI: | |
5816 | case R_PPC64_ADDR16_HIGHER: | |
5817 | case R_PPC64_ADDR16_HIGHERA: | |
5818 | case R_PPC64_ADDR16_HIGHEST: | |
5819 | case R_PPC64_ADDR16_HIGHESTA: | |
5820 | case R_PPC64_ADDR16_LO: | |
5821 | case R_PPC64_ADDR16_LO_DS: | |
5822 | case R_PPC64_ADDR24: | |
5823 | case R_PPC64_ADDR30: | |
5824 | case R_PPC64_ADDR32: | |
5825 | case R_PPC64_ADDR64: | |
5826 | case R_PPC64_UADDR16: | |
5827 | case R_PPC64_UADDR32: | |
5828 | case R_PPC64_UADDR64: | |
ec338859 AM |
5829 | /* r_symndx will be zero only for relocs against symbols |
5830 | from removed linkonce sections, or sections discarded by | |
5831 | a linker script. */ | |
5d1634d7 AM |
5832 | if (r_symndx == 0) |
5833 | break; | |
5834 | /* Fall thru. */ | |
5835 | ||
5836 | case R_PPC64_TOC: | |
5837 | if ((input_section->flags & SEC_ALLOC) == 0) | |
ec338859 AM |
5838 | break; |
5839 | ||
41bd81ab AM |
5840 | if (NO_OPD_RELOCS && is_opd) |
5841 | break; | |
5842 | ||
65f38f15 | 5843 | if ((info->shared |
65f38f15 AM |
5844 | && (IS_ABSOLUTE_RELOC (r_type) |
5845 | || (h != NULL | |
5846 | && h->dynindx != -1 | |
5847 | && (! info->symbolic | |
5848 | || (h->elf_link_hash_flags | |
5849 | & ELF_LINK_HASH_DEF_REGULAR) == 0)))) | |
5850 | || (!info->shared | |
65f38f15 AM |
5851 | && h != NULL |
5852 | && h->dynindx != -1 | |
5853 | && (h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0 | |
5854 | && (((h->elf_link_hash_flags | |
5855 | & ELF_LINK_HASH_DEF_DYNAMIC) != 0 | |
5856 | && (h->elf_link_hash_flags | |
5857 | & ELF_LINK_HASH_DEF_REGULAR) == 0) | |
5858 | || h->root.type == bfd_link_hash_undefweak | |
5859 | || h->root.type == bfd_link_hash_undefined))) | |
5860 | { | |
5861 | Elf_Internal_Rela outrel; | |
5862 | boolean skip, relocate; | |
5863 | asection *sreloc; | |
5864 | Elf64_External_Rela *loc; | |
5865 | ||
5866 | /* When generating a dynamic object, these relocations | |
5867 | are copied into the output file to be resolved at run | |
5868 | time. */ | |
5869 | ||
5870 | skip = false; | |
0bb2d96a | 5871 | relocate = false; |
65f38f15 | 5872 | |
c629eae0 JJ |
5873 | outrel.r_offset = |
5874 | _bfd_elf_section_offset (output_bfd, info, input_section, | |
5875 | rel->r_offset); | |
5876 | if (outrel.r_offset == (bfd_vma) -1) | |
5877 | skip = true; | |
0bb2d96a JJ |
5878 | else if (outrel.r_offset == (bfd_vma) -2) |
5879 | skip = true, relocate = true; | |
65f38f15 AM |
5880 | outrel.r_offset += (input_section->output_section->vma |
5881 | + input_section->output_offset); | |
5882 | outrel.r_addend = addend; | |
5883 | ||
5884 | if (skip) | |
0bb2d96a | 5885 | memset (&outrel, 0, sizeof outrel); |
65f38f15 AM |
5886 | else if (h != NULL |
5887 | && h->dynindx != -1 | |
41bd81ab | 5888 | && !is_opd |
65f38f15 AM |
5889 | && (!IS_ABSOLUTE_RELOC (r_type) |
5890 | || !info->shared | |
5891 | || !info->symbolic | |
5892 | || (h->elf_link_hash_flags | |
5893 | & ELF_LINK_HASH_DEF_REGULAR) == 0)) | |
0bb2d96a | 5894 | outrel.r_info = ELF64_R_INFO (h->dynindx, r_type); |
65f38f15 AM |
5895 | else |
5896 | { | |
41bd81ab AM |
5897 | /* This symbol is local, or marked to become local, |
5898 | or this is an opd section reloc which must point | |
5899 | at a local function. */ | |
65f38f15 AM |
5900 | outrel.r_addend += relocation; |
5901 | relocate = true; | |
e86ce104 | 5902 | if (r_type == R_PPC64_ADDR64 || r_type == R_PPC64_TOC) |
65f38f15 | 5903 | { |
3fad3c7c | 5904 | if (is_opd && h != NULL) |
afbe61cf AM |
5905 | { |
5906 | /* Lie about opd entries. This case occurs | |
5907 | when building shared libraries and we | |
5908 | reference a function in another shared | |
3fad3c7c AM |
5909 | lib. The same thing happens for a weak |
5910 | definition in an application that's | |
5911 | overridden by a strong definition in a | |
5912 | shared lib. (I believe this is a generic | |
5913 | bug in binutils handling of weak syms.) | |
5914 | In these cases we won't use the opd | |
1e2f5b6e | 5915 | entry in this lib. */ |
afbe61cf AM |
5916 | unresolved_reloc = false; |
5917 | } | |
65f38f15 AM |
5918 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); |
5919 | } | |
5920 | else | |
5921 | { | |
5922 | long indx = 0; | |
5923 | ||
41bd81ab | 5924 | if (bfd_is_abs_section (sec)) |
65f38f15 AM |
5925 | ; |
5926 | else if (sec == NULL || sec->owner == NULL) | |
5927 | { | |
5928 | bfd_set_error (bfd_error_bad_value); | |
5929 | return false; | |
5930 | } | |
5931 | else | |
5932 | { | |
5933 | asection *osec; | |
5934 | ||
5935 | osec = sec->output_section; | |
5936 | indx = elf_section_data (osec)->dynindx; | |
5937 | ||
5938 | /* We are turning this relocation into one | |
5939 | against a section symbol, so subtract out | |
5940 | the output section's address but not the | |
5941 | offset of the input section in the output | |
5942 | section. */ | |
5943 | outrel.r_addend -= osec->vma; | |
5944 | } | |
5945 | ||
5946 | outrel.r_info = ELF64_R_INFO (indx, r_type); | |
5947 | } | |
5948 | } | |
5949 | ||
5950 | sreloc = elf_section_data (input_section)->sreloc; | |
5951 | if (sreloc == NULL) | |
5952 | abort (); | |
5953 | ||
5954 | loc = (Elf64_External_Rela *) sreloc->contents; | |
5955 | loc += sreloc->reloc_count++; | |
5956 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); | |
5957 | ||
5958 | /* If this reloc is against an external symbol, it will | |
5959 | be computed at runtime, so there's no need to do | |
5960 | anything now. */ | |
5961 | if (! relocate) | |
5962 | continue; | |
5963 | } | |
5bd4f169 AM |
5964 | break; |
5965 | ||
65f38f15 AM |
5966 | case R_PPC64_COPY: |
5967 | case R_PPC64_GLOB_DAT: | |
5968 | case R_PPC64_JMP_SLOT: | |
5969 | case R_PPC64_RELATIVE: | |
5970 | /* We shouldn't ever see these dynamic relocs in relocatable | |
5971 | files. */ | |
5972 | /* Fall thru */ | |
5973 | ||
5974 | case R_PPC64_PLTGOT16: | |
5975 | case R_PPC64_PLTGOT16_DS: | |
5976 | case R_PPC64_PLTGOT16_HA: | |
5977 | case R_PPC64_PLTGOT16_HI: | |
5978 | case R_PPC64_PLTGOT16_LO: | |
5979 | case R_PPC64_PLTGOT16_LO_DS: | |
5980 | case R_PPC64_PLTREL32: | |
5981 | case R_PPC64_PLTREL64: | |
5982 | /* These ones haven't been implemented yet. */ | |
5983 | ||
5984 | (*_bfd_error_handler) | |
5985 | (_("%s: Relocation %s is not supported for symbol %s."), | |
5986 | bfd_archive_filename (input_bfd), | |
5987 | ppc64_elf_howto_table[(int) r_type]->name, sym_name); | |
5bd4f169 AM |
5988 | |
5989 | bfd_set_error (bfd_error_invalid_operation); | |
5990 | ret = false; | |
5991 | continue; | |
65f38f15 | 5992 | } |
5bd4f169 | 5993 | |
65f38f15 AM |
5994 | /* Do any further special processing. */ |
5995 | switch (r_type) | |
5996 | { | |
5997 | default: | |
5998 | break; | |
5999 | ||
6000 | case R_PPC64_ADDR16_HA: | |
6001 | case R_PPC64_ADDR16_HIGHERA: | |
6002 | case R_PPC64_ADDR16_HIGHESTA: | |
6003 | case R_PPC64_PLT16_HA: | |
6004 | case R_PPC64_TOC16_HA: | |
6005 | case R_PPC64_SECTOFF_HA: | |
6006 | /* It's just possible that this symbol is a weak symbol | |
6007 | that's not actually defined anywhere. In that case, | |
6008 | 'sec' would be NULL, and we should leave the symbol | |
6009 | alone (it will be set to zero elsewhere in the link). */ | |
6010 | if (sec != NULL) | |
6011 | /* Add 0x10000 if sign bit in 0:15 is set. */ | |
6012 | addend += ((relocation + addend) & 0x8000) << 1; | |
6013 | break; | |
6014 | ||
6015 | case R_PPC64_ADDR16_DS: | |
6016 | case R_PPC64_ADDR16_LO_DS: | |
6017 | case R_PPC64_GOT16_DS: | |
6018 | case R_PPC64_GOT16_LO_DS: | |
6019 | case R_PPC64_PLT16_LO_DS: | |
6020 | case R_PPC64_SECTOFF_DS: | |
6021 | case R_PPC64_SECTOFF_LO_DS: | |
6022 | case R_PPC64_TOC16_DS: | |
6023 | case R_PPC64_TOC16_LO_DS: | |
6024 | case R_PPC64_PLTGOT16_DS: | |
6025 | case R_PPC64_PLTGOT16_LO_DS: | |
6026 | if (((relocation + addend) & 3) != 0) | |
6027 | { | |
6028 | (*_bfd_error_handler) | |
6029 | (_("%s: error: relocation %s not a multiple of 4"), | |
6030 | bfd_archive_filename (input_bfd), | |
6031 | ppc64_elf_howto_table[(int) r_type]->name); | |
6032 | bfd_set_error (bfd_error_bad_value); | |
6033 | ret = false; | |
6034 | continue; | |
6035 | } | |
6036 | break; | |
721956f4 AM |
6037 | |
6038 | case R_PPC64_REL14: | |
6039 | case R_PPC64_REL14_BRNTAKEN: | |
6040 | case R_PPC64_REL14_BRTAKEN: | |
6041 | max_br_offset = 1 << 15; | |
6042 | goto branch_check; | |
6043 | ||
6044 | case R_PPC64_REL24: | |
6045 | max_br_offset = 1 << 25; | |
6046 | ||
6047 | branch_check: | |
6048 | /* If the branch is out of reach, then redirect the | |
6049 | call to the local stub for this function. */ | |
6050 | from = (offset | |
6051 | + input_section->output_offset | |
6052 | + input_section->output_section->vma); | |
6053 | if (relocation + addend - from + max_br_offset >= 2 * max_br_offset | |
6054 | && (stub_entry = ppc_get_stub_entry (input_section, sec, h, | |
6055 | rel, htab)) != NULL) | |
6056 | { | |
6057 | /* Munge up the value and addend so that we call the stub | |
6058 | rather than the procedure directly. */ | |
6059 | relocation = (stub_entry->stub_offset | |
6060 | + stub_entry->stub_sec->output_offset | |
6061 | + stub_entry->stub_sec->output_section->vma); | |
6062 | addend = 0; | |
6063 | } | |
6064 | break; | |
5bd4f169 AM |
6065 | } |
6066 | ||
65f38f15 AM |
6067 | /* FIXME: Why do we allow debugging sections to escape this error? |
6068 | More importantly, why do we not emit dynamic relocs above in | |
6069 | debugging sections (which are ! SEC_ALLOC)? If we had | |
6070 | emitted the dynamic reloc, we could remove the fudge here. */ | |
6071 | if (unresolved_reloc | |
6072 | && !(info->shared | |
6073 | && (input_section->flags & SEC_DEBUGGING) != 0 | |
6074 | && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0)) | |
9c07fe7c AM |
6075 | { |
6076 | (*_bfd_error_handler) | |
6077 | (_("%s(%s+0x%lx): unresolvable relocation against symbol `%s'"), | |
6078 | bfd_archive_filename (input_bfd), | |
6079 | bfd_get_section_name (input_bfd, input_section), | |
6080 | (long) rel->r_offset, | |
6081 | h->root.root.string); | |
6082 | ret = false; | |
6083 | } | |
5bd4f169 | 6084 | |
65f38f15 | 6085 | r = _bfd_final_link_relocate (ppc64_elf_howto_table[(int) r_type], |
5bd4f169 AM |
6086 | input_bfd, |
6087 | input_section, | |
6088 | contents, | |
6089 | offset, | |
6090 | relocation, | |
6091 | addend); | |
6092 | ||
ef60b7ff | 6093 | if (r != bfd_reloc_ok) |
5bd4f169 AM |
6094 | { |
6095 | const char *name; | |
6096 | ||
6097 | if (h != NULL) | |
6098 | { | |
6099 | if (h->root.type == bfd_link_hash_undefweak | |
65f38f15 | 6100 | && ppc64_elf_howto_table[(int) r_type]->pc_relative) |
5bd4f169 AM |
6101 | { |
6102 | /* Assume this is a call protected by other code that | |
6103 | detects the symbol is undefined. If this is the case, | |
6104 | we can safely ignore the overflow. If not, the | |
6105 | program is hosed anyway, and a little warning isn't | |
6106 | going to help. */ | |
6107 | ||
6108 | continue; | |
6109 | } | |
6110 | ||
6111 | name = h->root.root.string; | |
6112 | } | |
6113 | else | |
6114 | { | |
6115 | name = bfd_elf_string_from_elf_section (input_bfd, | |
6116 | symtab_hdr->sh_link, | |
6117 | sym->st_name); | |
6118 | if (name == NULL) | |
6119 | continue; | |
6120 | if (*name == '\0') | |
6121 | name = bfd_section_name (input_bfd, sec); | |
6122 | } | |
6123 | ||
ef60b7ff AM |
6124 | if (r == bfd_reloc_overflow) |
6125 | { | |
6126 | if (warned) | |
6127 | continue; | |
6128 | if (!((*info->callbacks->reloc_overflow) | |
6129 | (info, name, ppc64_elf_howto_table[(int) r_type]->name, | |
6130 | rel->r_addend, input_bfd, input_section, offset))) | |
6131 | return false; | |
6132 | } | |
6133 | else | |
6134 | { | |
6135 | (*_bfd_error_handler) | |
6136 | (_("%s(%s+0x%lx): reloc against `%s': error %d"), | |
6137 | bfd_archive_filename (input_bfd), | |
6138 | bfd_get_section_name (input_bfd, input_section), | |
6139 | (long) rel->r_offset, name, (int) r); | |
6140 | ret = false; | |
6141 | } | |
5bd4f169 | 6142 | } |
5bd4f169 AM |
6143 | } |
6144 | ||
5bd4f169 AM |
6145 | return ret; |
6146 | } | |
6147 | ||
6148 | /* Finish up dynamic symbol handling. We set the contents of various | |
6149 | dynamic sections here. */ | |
6150 | ||
6151 | static boolean | |
6152 | ppc64_elf_finish_dynamic_symbol (output_bfd, info, h, sym) | |
6153 | bfd *output_bfd; | |
6154 | struct bfd_link_info *info; | |
6155 | struct elf_link_hash_entry *h; | |
6156 | Elf_Internal_Sym *sym; | |
6157 | { | |
65f38f15 | 6158 | struct ppc_link_hash_table *htab; |
5bd4f169 AM |
6159 | bfd *dynobj; |
6160 | ||
65f38f15 AM |
6161 | htab = ppc_hash_table (info); |
6162 | dynobj = htab->elf.dynobj; | |
5bd4f169 | 6163 | |
41bd81ab AM |
6164 | if (h->plt.offset != (bfd_vma) -1 |
6165 | && ((struct ppc_link_hash_entry *) h)->is_func_descriptor) | |
5bd4f169 | 6166 | { |
65f38f15 AM |
6167 | Elf_Internal_Rela rela; |
6168 | Elf64_External_Rela *loc; | |
5bd4f169 AM |
6169 | |
6170 | /* This symbol has an entry in the procedure linkage table. Set | |
3fad3c7c | 6171 | it up. */ |
5bd4f169 | 6172 | |
5d1634d7 | 6173 | if (htab->splt == NULL |
65f38f15 | 6174 | || htab->srelplt == NULL |
e86ce104 | 6175 | || htab->sglink == NULL) |
65f38f15 AM |
6176 | abort (); |
6177 | ||
65f38f15 AM |
6178 | /* Create a JMP_SLOT reloc to inform the dynamic linker to |
6179 | fill in the PLT entry. */ | |
5bd4f169 | 6180 | |
65f38f15 AM |
6181 | rela.r_offset = (htab->splt->output_section->vma |
6182 | + htab->splt->output_offset | |
6183 | + h->plt.offset); | |
e86ce104 | 6184 | rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_JMP_SLOT); |
65f38f15 AM |
6185 | rela.r_addend = 0; |
6186 | ||
6187 | loc = (Elf64_External_Rela *) htab->srelplt->contents; | |
6188 | loc += (h->plt.offset - PLT_INITIAL_ENTRY_SIZE) / PLT_ENTRY_SIZE; | |
6189 | bfd_elf64_swap_reloca_out (output_bfd, &rela, loc); | |
5bd4f169 AM |
6190 | } |
6191 | ||
6192 | if (h->got.offset != (bfd_vma) -1) | |
6193 | { | |
5bd4f169 | 6194 | Elf_Internal_Rela rela; |
65f38f15 | 6195 | Elf64_External_Rela *loc; |
5bd4f169 AM |
6196 | |
6197 | /* This symbol has an entry in the global offset table. Set it | |
3fad3c7c | 6198 | up. */ |
5bd4f169 | 6199 | |
65f38f15 AM |
6200 | if (htab->sgot == NULL || htab->srelgot == NULL) |
6201 | abort (); | |
5bd4f169 | 6202 | |
65f38f15 AM |
6203 | rela.r_offset = (htab->sgot->output_section->vma |
6204 | + htab->sgot->output_offset | |
dc810e39 | 6205 | + (h->got.offset &~ (bfd_vma) 1)); |
5bd4f169 | 6206 | |
65f38f15 AM |
6207 | /* If this is a static link, or it is a -Bsymbolic link and the |
6208 | symbol is defined locally or was forced to be local because | |
6209 | of a version file, we just want to emit a RELATIVE reloc. | |
6210 | The entry in the global offset table will already have been | |
6211 | initialized in the relocate_section function. */ | |
5bd4f169 | 6212 | if (info->shared |
65f38f15 AM |
6213 | && (info->symbolic |
6214 | || h->dynindx == -1 | |
6215 | || (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL)) | |
5bd4f169 AM |
6216 | && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR)) |
6217 | { | |
65f38f15 | 6218 | BFD_ASSERT((h->got.offset & 1) != 0); |
5bd4f169 AM |
6219 | rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); |
6220 | rela.r_addend = (h->root.u.def.value | |
6221 | + h->root.u.def.section->output_section->vma | |
6222 | + h->root.u.def.section->output_offset); | |
6223 | } | |
6224 | else | |
6225 | { | |
6226 | BFD_ASSERT ((h->got.offset & 1) == 0); | |
65f38f15 AM |
6227 | bfd_put_64 (output_bfd, (bfd_vma) 0, |
6228 | htab->sgot->contents + h->got.offset); | |
5bd4f169 AM |
6229 | rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_GLOB_DAT); |
6230 | rela.r_addend = 0; | |
6231 | } | |
6232 | ||
65f38f15 AM |
6233 | loc = (Elf64_External_Rela *) htab->srelgot->contents; |
6234 | loc += htab->srelgot->reloc_count++; | |
6235 | bfd_elf64_swap_reloca_out (output_bfd, &rela, loc); | |
5bd4f169 AM |
6236 | } |
6237 | ||
6238 | if ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_COPY) != 0) | |
6239 | { | |
5bd4f169 | 6240 | Elf_Internal_Rela rela; |
65f38f15 | 6241 | Elf64_External_Rela *loc; |
5bd4f169 | 6242 | |
65f38f15 | 6243 | /* This symbol needs a copy reloc. Set it up. */ |
5bd4f169 | 6244 | |
65f38f15 AM |
6245 | if (h->dynindx == -1 |
6246 | || (h->root.type != bfd_link_hash_defined | |
6247 | && h->root.type != bfd_link_hash_defweak) | |
6248 | || htab->srelbss == NULL) | |
6249 | abort (); | |
5bd4f169 AM |
6250 | |
6251 | rela.r_offset = (h->root.u.def.value | |
6252 | + h->root.u.def.section->output_section->vma | |
6253 | + h->root.u.def.section->output_offset); | |
6254 | rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_COPY); | |
6255 | rela.r_addend = 0; | |
65f38f15 AM |
6256 | loc = (Elf64_External_Rela *) htab->srelbss->contents; |
6257 | loc += htab->srelbss->reloc_count++; | |
6258 | bfd_elf64_swap_reloca_out (output_bfd, &rela, loc); | |
5bd4f169 AM |
6259 | } |
6260 | ||
5bd4f169 AM |
6261 | /* Mark some specially defined symbols as absolute. */ |
6262 | if (strcmp (h->root.root.string, "_DYNAMIC") == 0) | |
6263 | sym->st_shndx = SHN_ABS; | |
6264 | ||
6265 | return true; | |
6266 | } | |
6267 | ||
65f38f15 AM |
6268 | /* Used to decide how to sort relocs in an optimal manner for the |
6269 | dynamic linker, before writing them out. */ | |
6270 | ||
6271 | static enum elf_reloc_type_class | |
6272 | ppc64_elf_reloc_type_class (rela) | |
6273 | const Elf_Internal_Rela *rela; | |
6274 | { | |
a33d1f77 AM |
6275 | enum elf_ppc_reloc_type r_type; |
6276 | ||
6277 | r_type = (enum elf_ppc_reloc_type) ELF64_R_TYPE (rela->r_info); | |
6278 | switch (r_type) | |
65f38f15 AM |
6279 | { |
6280 | case R_PPC64_RELATIVE: | |
6281 | return reloc_class_relative; | |
6282 | case R_PPC64_JMP_SLOT: | |
6283 | return reloc_class_plt; | |
6284 | case R_PPC64_COPY: | |
6285 | return reloc_class_copy; | |
6286 | default: | |
6287 | return reloc_class_normal; | |
6288 | } | |
6289 | } | |
6290 | ||
5bd4f169 AM |
6291 | /* Finish up the dynamic sections. */ |
6292 | ||
6293 | static boolean | |
6294 | ppc64_elf_finish_dynamic_sections (output_bfd, info) | |
6295 | bfd *output_bfd; | |
6296 | struct bfd_link_info *info; | |
6297 | { | |
65f38f15 AM |
6298 | struct ppc_link_hash_table *htab; |
6299 | bfd *dynobj; | |
5bd4f169 | 6300 | asection *sdyn; |
5bd4f169 | 6301 | |
65f38f15 AM |
6302 | htab = ppc_hash_table (info); |
6303 | dynobj = htab->elf.dynobj; | |
5bd4f169 AM |
6304 | sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); |
6305 | ||
65f38f15 | 6306 | if (htab->elf.dynamic_sections_created) |
5bd4f169 | 6307 | { |
5bd4f169 AM |
6308 | Elf64_External_Dyn *dyncon, *dynconend; |
6309 | ||
65f38f15 AM |
6310 | if (sdyn == NULL || htab->sgot == NULL) |
6311 | abort (); | |
5bd4f169 AM |
6312 | |
6313 | dyncon = (Elf64_External_Dyn *) sdyn->contents; | |
6314 | dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->_raw_size); | |
6315 | for (; dyncon < dynconend; dyncon++) | |
6316 | { | |
6317 | Elf_Internal_Dyn dyn; | |
19397422 | 6318 | asection *s; |
5bd4f169 AM |
6319 | |
6320 | bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn); | |
6321 | ||
6322 | switch (dyn.d_tag) | |
6323 | { | |
65f38f15 AM |
6324 | default: |
6325 | continue; | |
5bd4f169 | 6326 | |
5d1634d7 AM |
6327 | case DT_PPC64_GLINK: |
6328 | dyn.d_un.d_ptr = (htab->sglink->output_section->vma | |
6329 | + htab->sglink->output_offset); | |
6330 | break; | |
6331 | ||
19397422 AM |
6332 | case DT_PPC64_OPD: |
6333 | s = bfd_get_section_by_name (output_bfd, ".opd"); | |
6334 | if (s != NULL) | |
6335 | dyn.d_un.d_ptr = s->vma; | |
6336 | break; | |
6337 | ||
6338 | case DT_PPC64_OPDSZ: | |
6339 | s = bfd_get_section_by_name (output_bfd, ".opd"); | |
6340 | if (s != NULL) | |
6341 | dyn.d_un.d_val = s->_raw_size; | |
6342 | break; | |
6343 | ||
65f38f15 | 6344 | case DT_PLTGOT: |
5d1634d7 AM |
6345 | dyn.d_un.d_ptr = (htab->splt->output_section->vma |
6346 | + htab->splt->output_offset); | |
65f38f15 AM |
6347 | break; |
6348 | ||
6349 | case DT_JMPREL: | |
5d1634d7 AM |
6350 | dyn.d_un.d_ptr = (htab->srelplt->output_section->vma |
6351 | + htab->srelplt->output_offset); | |
65f38f15 | 6352 | break; |
5bd4f169 | 6353 | |
65f38f15 | 6354 | case DT_PLTRELSZ: |
5d1634d7 AM |
6355 | dyn.d_un.d_val = htab->srelplt->_raw_size; |
6356 | break; | |
6357 | ||
6358 | case DT_RELASZ: | |
6359 | /* Don't count procedure linkage table relocs in the | |
6360 | overall reloc count. */ | |
6361 | if (htab->srelplt != NULL) | |
6362 | dyn.d_un.d_val -= htab->srelplt->_raw_size; | |
65f38f15 | 6363 | break; |
5bd4f169 | 6364 | } |
5bd4f169 | 6365 | |
65f38f15 | 6366 | bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon); |
5bd4f169 | 6367 | } |
5bd4f169 AM |
6368 | } |
6369 | ||
5d1634d7 AM |
6370 | if (htab->sgot != NULL && htab->sgot->_raw_size != 0) |
6371 | { | |
6372 | /* Fill in the first entry in the global offset table. | |
6373 | We use it to hold the link-time TOCbase. */ | |
6374 | bfd_put_64 (output_bfd, | |
60ee0d4a | 6375 | elf_gp (output_bfd) + TOC_BASE_OFF, |
5d1634d7 AM |
6376 | htab->sgot->contents); |
6377 | ||
6378 | /* Set .got entry size. */ | |
6379 | elf_section_data (htab->sgot->output_section)->this_hdr.sh_entsize = 8; | |
6380 | } | |
6381 | ||
6382 | if (htab->splt != NULL && htab->splt->_raw_size != 0) | |
6383 | { | |
6384 | /* Set .plt entry size. */ | |
6385 | elf_section_data (htab->splt->output_section)->this_hdr.sh_entsize | |
6386 | = PLT_ENTRY_SIZE; | |
6387 | } | |
6388 | ||
5bd4f169 AM |
6389 | return true; |
6390 | } | |
6391 | ||
6392 | #define TARGET_LITTLE_SYM bfd_elf64_powerpcle_vec | |
6393 | #define TARGET_LITTLE_NAME "elf64-powerpcle" | |
6394 | #define TARGET_BIG_SYM bfd_elf64_powerpc_vec | |
6395 | #define TARGET_BIG_NAME "elf64-powerpc" | |
6396 | #define ELF_ARCH bfd_arch_powerpc | |
6397 | #define ELF_MACHINE_CODE EM_PPC64 | |
6398 | #define ELF_MAXPAGESIZE 0x10000 | |
6399 | #define elf_info_to_howto ppc64_elf_info_to_howto | |
6400 | ||
6401 | #ifdef EM_CYGNUS_POWERPC | |
6402 | #define ELF_MACHINE_ALT1 EM_CYGNUS_POWERPC | |
6403 | #endif | |
6404 | ||
6405 | #ifdef EM_PPC_OLD | |
6406 | #define ELF_MACHINE_ALT2 EM_PPC_OLD | |
6407 | #endif | |
6408 | ||
6409 | #define elf_backend_want_got_sym 0 | |
6410 | #define elf_backend_want_plt_sym 0 | |
6411 | #define elf_backend_plt_alignment 3 | |
6412 | #define elf_backend_plt_not_loaded 1 | |
6413 | #define elf_backend_got_symbol_offset 0 | |
5d1634d7 AM |
6414 | #define elf_backend_got_header_size 8 |
6415 | #define elf_backend_plt_header_size PLT_INITIAL_ENTRY_SIZE | |
5bd4f169 | 6416 | #define elf_backend_can_gc_sections 1 |
65f38f15 | 6417 | #define elf_backend_can_refcount 1 |
b491616a | 6418 | #define elf_backend_rela_normal 1 |
5bd4f169 | 6419 | |
65f38f15 AM |
6420 | #define bfd_elf64_bfd_reloc_type_lookup ppc64_elf_reloc_type_lookup |
6421 | #define bfd_elf64_bfd_set_private_flags ppc64_elf_set_private_flags | |
65f38f15 AM |
6422 | #define bfd_elf64_bfd_merge_private_bfd_data ppc64_elf_merge_private_bfd_data |
6423 | #define bfd_elf64_bfd_link_hash_table_create ppc64_elf_link_hash_table_create | |
721956f4 | 6424 | #define bfd_elf64_bfd_link_hash_table_free ppc64_elf_link_hash_table_free |
7cdc5bba | 6425 | #define bfd_elf64_get_symbol_info ppc64_elf_get_symbol_info |
65f38f15 | 6426 | |
feee612b | 6427 | #define elf_backend_object_p ppc64_elf_object_p |
65f38f15 AM |
6428 | #define elf_backend_section_from_shdr ppc64_elf_section_from_shdr |
6429 | #define elf_backend_create_dynamic_sections ppc64_elf_create_dynamic_sections | |
6430 | #define elf_backend_copy_indirect_symbol ppc64_elf_copy_indirect_symbol | |
6431 | #define elf_backend_check_relocs ppc64_elf_check_relocs | |
6432 | #define elf_backend_gc_mark_hook ppc64_elf_gc_mark_hook | |
6433 | #define elf_backend_gc_sweep_hook ppc64_elf_gc_sweep_hook | |
6434 | #define elf_backend_adjust_dynamic_symbol ppc64_elf_adjust_dynamic_symbol | |
e86ce104 AM |
6435 | #define elf_backend_hide_symbol ppc64_elf_hide_symbol |
6436 | #define elf_backend_always_size_sections ppc64_elf_func_desc_adjust | |
65f38f15 AM |
6437 | #define elf_backend_size_dynamic_sections ppc64_elf_size_dynamic_sections |
6438 | #define elf_backend_fake_sections ppc64_elf_fake_sections | |
6439 | #define elf_backend_relocate_section ppc64_elf_relocate_section | |
6440 | #define elf_backend_finish_dynamic_symbol ppc64_elf_finish_dynamic_symbol | |
6441 | #define elf_backend_reloc_type_class ppc64_elf_reloc_type_class | |
6442 | #define elf_backend_finish_dynamic_sections ppc64_elf_finish_dynamic_sections | |
5bd4f169 AM |
6443 | |
6444 | #include "elf64-target.h" |