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 *)); | |
5bd4f169 AM |
60 | static boolean ppc64_elf_set_private_flags |
61 | PARAMS ((bfd *, flagword)); | |
5bd4f169 AM |
62 | static boolean ppc64_elf_merge_private_bfd_data |
63 | PARAMS ((bfd *, bfd *)); | |
64 | static boolean ppc64_elf_section_from_shdr | |
90937f86 | 65 | PARAMS ((bfd *, Elf64_Internal_Shdr *, const char *)); |
5bd4f169 AM |
66 | |
67 | ||
5bd4f169 AM |
68 | /* The name of the dynamic interpreter. This is put in the .interp |
69 | section. */ | |
70 | #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1" | |
71 | ||
72 | /* The size in bytes of an entry in the procedure linkage table. */ | |
73 | #define PLT_ENTRY_SIZE 24 | |
74 | ||
75 | /* The initial size of the plt reserved for the dynamic linker. */ | |
5d1634d7 | 76 | #define PLT_INITIAL_ENTRY_SIZE PLT_ENTRY_SIZE |
5bd4f169 AM |
77 | |
78 | /* TOC base pointers offset from start of TOC. */ | |
79 | #define TOC_BASE_OFF (0x8000) | |
80 | ||
5d1634d7 AM |
81 | /* .plt call stub instructions. */ |
82 | #define ADDIS_R12_R2 0x3d820000 /* addis %r12,%r2,xxx@ha */ | |
83 | #define STD_R2_40R1 0xf8410028 /* std %r2,40(%r1) */ | |
84 | #define LD_R11_0R12 0xe96c0000 /* ld %r11,xxx+0@l(%r12) */ | |
85 | #define LD_R2_0R12 0xe84c0000 /* ld %r2,xxx+8@l(%r12) */ | |
86 | #define MTCTR_R11 0x7d6903a6 /* mtctr %r11 */ | |
87 | /* ld %r11,xxx+16@l(%r12) */ | |
88 | #define BCTR 0x4e800420 /* bctr */ | |
89 | ||
90 | /* The normal stub is this size. */ | |
91 | #define PLT_CALL_STUB_SIZE (7*4) | |
92 | ||
93 | /* But sometimes the .plt entry crosses a 64k boundary, and we need | |
94 | to adjust the high word with this insn. */ | |
95 | #define ADDIS_R12_R12_1 0x3d8c0001 /* addis %r12,%r12,1 */ | |
5bd4f169 | 96 | |
5d1634d7 AM |
97 | /* The .glink fixup call stub is the same as the .plt call stub, but |
98 | the first instruction restores r2, and the std is omitted. */ | |
99 | #define LD_R2_40R1 0xe8410028 /* ld %r2,40(%r1) */ | |
100 | ||
101 | /* Always allow this much space. */ | |
102 | #define GLINK_CALL_STUB_SIZE (8*4) | |
103 | ||
104 | /* Pad with this. */ | |
105 | #define NOP 0x60000000 | |
106 | ||
721956f4 AM |
107 | /* Some other nops. */ |
108 | #define CROR_151515 0x4def7b82 | |
109 | #define CROR_313131 0x4ffffb82 | |
110 | ||
cedb70c5 | 111 | /* .glink entries for the first 32k functions are two instructions. */ |
5d1634d7 AM |
112 | #define LI_R0_0 0x38000000 /* li %r0,0 */ |
113 | #define B_DOT 0x48000000 /* b . */ | |
114 | ||
115 | /* After that, we need two instructions to load the index, followed by | |
116 | a branch. */ | |
117 | #define LIS_R0_0 0x3c000000 /* lis %r0,0 */ | |
10ed1bba | 118 | #define ORI_R0_R0_0 0x60000000 /* ori %r0,%r0,0 */ |
41bd81ab | 119 | |
82bd7b59 AM |
120 | /* Instructions to save and restore floating point regs. */ |
121 | #define STFD_FR0_0R1 0xd8010000 /* stfd %fr0,0(%r1) */ | |
122 | #define LFD_FR0_0R1 0xc8010000 /* lfd %fr0,0(%r1) */ | |
123 | #define BLR 0x4e800020 /* blr */ | |
124 | ||
41bd81ab AM |
125 | /* Since .opd is an array of descriptors and each entry will end up |
126 | with identical R_PPC64_RELATIVE relocs, there is really no need to | |
127 | propagate .opd relocs; The dynamic linker should be taught to | |
19397422 AM |
128 | relocate .opd without reloc entries. FIXME: .opd should be trimmed |
129 | of unused values. */ | |
41bd81ab AM |
130 | #ifndef NO_OPD_RELOCS |
131 | #define NO_OPD_RELOCS 0 | |
132 | #endif | |
5bd4f169 AM |
133 | \f |
134 | /* Relocation HOWTO's. */ | |
135 | static reloc_howto_type *ppc64_elf_howto_table[(int) R_PPC_max]; | |
136 | ||
137 | static reloc_howto_type ppc64_elf_howto_raw[] = { | |
138 | /* This reloc does nothing. */ | |
139 | HOWTO (R_PPC64_NONE, /* type */ | |
140 | 0, /* rightshift */ | |
141 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
142 | 32, /* bitsize */ | |
143 | false, /* pc_relative */ | |
144 | 0, /* bitpos */ | |
145 | complain_overflow_bitfield, /* complain_on_overflow */ | |
146 | bfd_elf_generic_reloc, /* special_function */ | |
147 | "R_PPC64_NONE", /* name */ | |
148 | false, /* partial_inplace */ | |
149 | 0, /* src_mask */ | |
150 | 0, /* dst_mask */ | |
151 | false), /* pcrel_offset */ | |
152 | ||
153 | /* A standard 32 bit relocation. */ | |
154 | HOWTO (R_PPC64_ADDR32, /* type */ | |
155 | 0, /* rightshift */ | |
156 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
157 | 32, /* bitsize */ | |
158 | false, /* pc_relative */ | |
159 | 0, /* bitpos */ | |
160 | complain_overflow_bitfield, /* complain_on_overflow */ | |
161 | bfd_elf_generic_reloc, /* special_function */ | |
162 | "R_PPC64_ADDR32", /* name */ | |
163 | false, /* partial_inplace */ | |
164 | 0, /* src_mask */ | |
165 | 0xffffffff, /* dst_mask */ | |
166 | false), /* pcrel_offset */ | |
167 | ||
168 | /* An absolute 26 bit branch; the lower two bits must be zero. | |
169 | FIXME: we don't check that, we just clear them. */ | |
170 | HOWTO (R_PPC64_ADDR24, /* type */ | |
171 | 0, /* rightshift */ | |
172 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
173 | 26, /* bitsize */ | |
174 | false, /* pc_relative */ | |
175 | 0, /* bitpos */ | |
176 | complain_overflow_bitfield, /* complain_on_overflow */ | |
177 | bfd_elf_generic_reloc, /* special_function */ | |
178 | "R_PPC64_ADDR24", /* name */ | |
179 | false, /* partial_inplace */ | |
180 | 0, /* src_mask */ | |
181 | 0x3fffffc, /* dst_mask */ | |
182 | false), /* pcrel_offset */ | |
183 | ||
184 | /* A standard 16 bit relocation. */ | |
185 | HOWTO (R_PPC64_ADDR16, /* type */ | |
186 | 0, /* rightshift */ | |
187 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
188 | 16, /* bitsize */ | |
189 | false, /* pc_relative */ | |
190 | 0, /* bitpos */ | |
191 | complain_overflow_bitfield, /* complain_on_overflow */ | |
192 | bfd_elf_generic_reloc, /* special_function */ | |
193 | "R_PPC64_ADDR16", /* name */ | |
194 | false, /* partial_inplace */ | |
195 | 0, /* src_mask */ | |
196 | 0xffff, /* dst_mask */ | |
197 | false), /* pcrel_offset */ | |
198 | ||
199 | /* A 16 bit relocation without overflow. */ | |
200 | HOWTO (R_PPC64_ADDR16_LO, /* type */ | |
201 | 0, /* rightshift */ | |
202 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
203 | 16, /* bitsize */ | |
204 | false, /* pc_relative */ | |
205 | 0, /* bitpos */ | |
206 | complain_overflow_dont,/* complain_on_overflow */ | |
207 | bfd_elf_generic_reloc, /* special_function */ | |
208 | "R_PPC64_ADDR16_LO", /* name */ | |
209 | false, /* partial_inplace */ | |
210 | 0, /* src_mask */ | |
211 | 0xffff, /* dst_mask */ | |
212 | false), /* pcrel_offset */ | |
213 | ||
214 | /* Bits 16-31 of an address. */ | |
215 | HOWTO (R_PPC64_ADDR16_HI, /* type */ | |
216 | 16, /* rightshift */ | |
217 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
218 | 16, /* bitsize */ | |
219 | false, /* pc_relative */ | |
220 | 0, /* bitpos */ | |
221 | complain_overflow_dont, /* complain_on_overflow */ | |
222 | bfd_elf_generic_reloc, /* special_function */ | |
223 | "R_PPC64_ADDR16_HI", /* name */ | |
224 | false, /* partial_inplace */ | |
225 | 0, /* src_mask */ | |
226 | 0xffff, /* dst_mask */ | |
227 | false), /* pcrel_offset */ | |
228 | ||
229 | /* Bits 16-31 of an address, plus 1 if the contents of the low 16 | |
230 | bits, treated as a signed number, is negative. */ | |
231 | HOWTO (R_PPC64_ADDR16_HA, /* type */ | |
232 | 16, /* rightshift */ | |
233 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
234 | 16, /* bitsize */ | |
235 | false, /* pc_relative */ | |
236 | 0, /* bitpos */ | |
237 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 238 | ppc64_elf_ha_reloc, /* special_function */ |
5bd4f169 AM |
239 | "R_PPC64_ADDR16_HA", /* name */ |
240 | false, /* partial_inplace */ | |
241 | 0, /* src_mask */ | |
242 | 0xffff, /* dst_mask */ | |
243 | false), /* pcrel_offset */ | |
244 | ||
245 | /* An absolute 16 bit branch; the lower two bits must be zero. | |
246 | FIXME: we don't check that, we just clear them. */ | |
247 | HOWTO (R_PPC64_ADDR14, /* type */ | |
248 | 0, /* rightshift */ | |
249 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
250 | 16, /* bitsize */ | |
251 | false, /* pc_relative */ | |
252 | 0, /* bitpos */ | |
253 | complain_overflow_bitfield, /* complain_on_overflow */ | |
254 | bfd_elf_generic_reloc, /* special_function */ | |
255 | "R_PPC64_ADDR14", /* name */ | |
256 | false, /* partial_inplace */ | |
257 | 0, /* src_mask */ | |
258 | 0xfffc, /* dst_mask */ | |
259 | false), /* pcrel_offset */ | |
260 | ||
261 | /* An absolute 16 bit branch, for which bit 10 should be set to | |
262 | indicate that the branch is expected to be taken. The lower two | |
263 | bits must be zero. */ | |
264 | HOWTO (R_PPC64_ADDR14_BRTAKEN, /* type */ | |
265 | 0, /* rightshift */ | |
266 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
267 | 16, /* bitsize */ | |
268 | false, /* pc_relative */ | |
269 | 0, /* bitpos */ | |
270 | complain_overflow_bitfield, /* complain_on_overflow */ | |
805fc799 | 271 | ppc64_elf_brtaken_reloc, /* special_function */ |
5bd4f169 AM |
272 | "R_PPC64_ADDR14_BRTAKEN",/* name */ |
273 | false, /* partial_inplace */ | |
274 | 0, /* src_mask */ | |
275 | 0xfffc, /* dst_mask */ | |
276 | false), /* pcrel_offset */ | |
277 | ||
278 | /* An absolute 16 bit branch, for which bit 10 should be set to | |
279 | indicate that the branch is not expected to be taken. The lower | |
280 | two bits must be zero. */ | |
281 | HOWTO (R_PPC64_ADDR14_BRNTAKEN, /* type */ | |
282 | 0, /* rightshift */ | |
283 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
284 | 16, /* bitsize */ | |
285 | false, /* pc_relative */ | |
286 | 0, /* bitpos */ | |
287 | complain_overflow_bitfield, /* complain_on_overflow */ | |
805fc799 | 288 | ppc64_elf_brtaken_reloc, /* special_function */ |
5bd4f169 AM |
289 | "R_PPC64_ADDR14_BRNTAKEN",/* name */ |
290 | false, /* partial_inplace */ | |
291 | 0, /* src_mask */ | |
292 | 0xfffc, /* dst_mask */ | |
293 | false), /* pcrel_offset */ | |
294 | ||
295 | /* A relative 26 bit branch; the lower two bits must be zero. */ | |
296 | HOWTO (R_PPC64_REL24, /* type */ | |
297 | 0, /* rightshift */ | |
298 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
299 | 26, /* bitsize */ | |
300 | true, /* pc_relative */ | |
301 | 0, /* bitpos */ | |
302 | complain_overflow_signed, /* complain_on_overflow */ | |
303 | bfd_elf_generic_reloc, /* special_function */ | |
304 | "R_PPC64_REL24", /* name */ | |
305 | false, /* partial_inplace */ | |
306 | 0, /* src_mask */ | |
307 | 0x3fffffc, /* dst_mask */ | |
308 | true), /* pcrel_offset */ | |
309 | ||
310 | /* A relative 16 bit branch; the lower two bits must be zero. */ | |
311 | HOWTO (R_PPC64_REL14, /* type */ | |
312 | 0, /* rightshift */ | |
313 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
314 | 16, /* bitsize */ | |
315 | true, /* pc_relative */ | |
316 | 0, /* bitpos */ | |
317 | complain_overflow_signed, /* complain_on_overflow */ | |
318 | bfd_elf_generic_reloc, /* special_function */ | |
319 | "R_PPC64_REL14", /* name */ | |
320 | false, /* partial_inplace */ | |
321 | 0, /* src_mask */ | |
322 | 0xfffc, /* dst_mask */ | |
323 | true), /* pcrel_offset */ | |
324 | ||
325 | /* A relative 16 bit branch. Bit 10 should be set to indicate that | |
326 | the branch is expected to be taken. The lower two bits must be | |
327 | zero. */ | |
328 | HOWTO (R_PPC64_REL14_BRTAKEN, /* type */ | |
329 | 0, /* rightshift */ | |
330 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
331 | 16, /* bitsize */ | |
332 | true, /* pc_relative */ | |
333 | 0, /* bitpos */ | |
334 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 335 | ppc64_elf_brtaken_reloc, /* special_function */ |
5bd4f169 AM |
336 | "R_PPC64_REL14_BRTAKEN", /* name */ |
337 | false, /* partial_inplace */ | |
338 | 0, /* src_mask */ | |
339 | 0xfffc, /* dst_mask */ | |
340 | true), /* pcrel_offset */ | |
341 | ||
342 | /* A relative 16 bit branch. Bit 10 should be set to indicate that | |
343 | the branch is not expected to be taken. The lower two bits must | |
344 | be zero. */ | |
345 | HOWTO (R_PPC64_REL14_BRNTAKEN, /* type */ | |
346 | 0, /* rightshift */ | |
347 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
348 | 16, /* bitsize */ | |
349 | true, /* pc_relative */ | |
350 | 0, /* bitpos */ | |
351 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 352 | ppc64_elf_brtaken_reloc, /* special_function */ |
5bd4f169 AM |
353 | "R_PPC64_REL14_BRNTAKEN",/* name */ |
354 | false, /* partial_inplace */ | |
355 | 0, /* src_mask */ | |
356 | 0xfffc, /* dst_mask */ | |
357 | true), /* pcrel_offset */ | |
358 | ||
359 | /* Like R_PPC64_ADDR16, but referring to the GOT table entry for the | |
360 | symbol. */ | |
361 | HOWTO (R_PPC64_GOT16, /* type */ | |
362 | 0, /* rightshift */ | |
363 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
364 | 16, /* bitsize */ | |
365 | false, /* pc_relative */ | |
366 | 0, /* bitpos */ | |
367 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 368 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 AM |
369 | "R_PPC64_GOT16", /* name */ |
370 | false, /* partial_inplace */ | |
371 | 0, /* src_mask */ | |
372 | 0xffff, /* dst_mask */ | |
373 | false), /* pcrel_offset */ | |
374 | ||
375 | /* Like R_PPC64_ADDR16_LO, but referring to the GOT table entry for | |
376 | the symbol. */ | |
377 | HOWTO (R_PPC64_GOT16_LO, /* type */ | |
378 | 0, /* rightshift */ | |
379 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
380 | 16, /* bitsize */ | |
381 | false, /* pc_relative */ | |
382 | 0, /* bitpos */ | |
383 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 384 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 AM |
385 | "R_PPC64_GOT16_LO", /* name */ |
386 | false, /* partial_inplace */ | |
387 | 0, /* src_mask */ | |
388 | 0xffff, /* dst_mask */ | |
389 | false), /* pcrel_offset */ | |
390 | ||
391 | /* Like R_PPC64_ADDR16_HI, but referring to the GOT table entry for | |
392 | the symbol. */ | |
393 | HOWTO (R_PPC64_GOT16_HI, /* type */ | |
394 | 16, /* rightshift */ | |
395 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
396 | 16, /* bitsize */ | |
397 | false, /* pc_relative */ | |
398 | 0, /* bitpos */ | |
399 | complain_overflow_dont,/* complain_on_overflow */ | |
805fc799 | 400 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 AM |
401 | "R_PPC64_GOT16_HI", /* name */ |
402 | false, /* partial_inplace */ | |
403 | 0, /* src_mask */ | |
404 | 0xffff, /* dst_mask */ | |
405 | false), /* pcrel_offset */ | |
406 | ||
407 | /* Like R_PPC64_ADDR16_HA, but referring to the GOT table entry for | |
408 | the symbol. */ | |
409 | HOWTO (R_PPC64_GOT16_HA, /* type */ | |
410 | 16, /* rightshift */ | |
411 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
412 | 16, /* bitsize */ | |
413 | false, /* pc_relative */ | |
414 | 0, /* bitpos */ | |
415 | complain_overflow_dont,/* complain_on_overflow */ | |
805fc799 | 416 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 AM |
417 | "R_PPC64_GOT16_HA", /* name */ |
418 | false, /* partial_inplace */ | |
419 | 0, /* src_mask */ | |
420 | 0xffff, /* dst_mask */ | |
421 | false), /* pcrel_offset */ | |
422 | ||
423 | /* This is used only by the dynamic linker. The symbol should exist | |
424 | both in the object being run and in some shared library. The | |
425 | dynamic linker copies the data addressed by the symbol from the | |
426 | shared library into the object, because the object being | |
427 | run has to have the data at some particular address. */ | |
428 | HOWTO (R_PPC64_COPY, /* type */ | |
429 | 0, /* rightshift */ | |
430 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
431 | 32, /* bitsize */ | |
432 | false, /* pc_relative */ | |
433 | 0, /* bitpos */ | |
434 | complain_overflow_bitfield, /* complain_on_overflow */ | |
805fc799 | 435 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 AM |
436 | "R_PPC64_COPY", /* name */ |
437 | false, /* partial_inplace */ | |
438 | 0, /* src_mask */ | |
439 | 0, /* dst_mask */ | |
440 | false), /* pcrel_offset */ | |
441 | ||
442 | /* Like R_PPC64_ADDR64, but used when setting global offset table | |
443 | entries. */ | |
444 | HOWTO (R_PPC64_GLOB_DAT, /* type */ | |
445 | 0, /* rightshift */ | |
446 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
447 | 64, /* bitsize */ | |
448 | false, /* pc_relative */ | |
449 | 0, /* bitpos */ | |
450 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 451 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 AM |
452 | "R_PPC64_GLOB_DAT", /* name */ |
453 | false, /* partial_inplace */ | |
454 | 0, /* src_mask */ | |
455 | 0xffffffffffffffff, /* dst_mask */ | |
456 | false), /* pcrel_offset */ | |
457 | ||
458 | /* Created by the link editor. Marks a procedure linkage table | |
459 | entry for a symbol. */ | |
460 | HOWTO (R_PPC64_JMP_SLOT, /* type */ | |
461 | 0, /* rightshift */ | |
462 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
463 | 0, /* bitsize */ | |
464 | false, /* pc_relative */ | |
465 | 0, /* bitpos */ | |
466 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 467 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 AM |
468 | "R_PPC64_JMP_SLOT", /* name */ |
469 | false, /* partial_inplace */ | |
470 | 0, /* src_mask */ | |
471 | 0, /* dst_mask */ | |
472 | false), /* pcrel_offset */ | |
473 | ||
474 | /* Used only by the dynamic linker. When the object is run, this | |
475 | doubleword64 is set to the load address of the object, plus the | |
476 | addend. */ | |
477 | HOWTO (R_PPC64_RELATIVE, /* type */ | |
478 | 0, /* rightshift */ | |
479 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
480 | 64, /* bitsize */ | |
8fc39d5d | 481 | false, /* pc_relative */ |
5bd4f169 AM |
482 | 0, /* bitpos */ |
483 | complain_overflow_dont, /* complain_on_overflow */ | |
484 | bfd_elf_generic_reloc, /* special_function */ | |
485 | "R_PPC64_RELATIVE", /* name */ | |
486 | false, /* partial_inplace */ | |
487 | 0, /* src_mask */ | |
488 | 0xffffffffffffffff, /* dst_mask */ | |
8fc39d5d | 489 | false), /* pcrel_offset */ |
5bd4f169 AM |
490 | |
491 | /* Like R_PPC64_ADDR32, but may be unaligned. */ | |
492 | HOWTO (R_PPC64_UADDR32, /* type */ | |
493 | 0, /* rightshift */ | |
494 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
495 | 32, /* bitsize */ | |
496 | false, /* pc_relative */ | |
497 | 0, /* bitpos */ | |
498 | complain_overflow_bitfield, /* complain_on_overflow */ | |
499 | bfd_elf_generic_reloc, /* special_function */ | |
500 | "R_PPC64_UADDR32", /* name */ | |
501 | false, /* partial_inplace */ | |
502 | 0, /* src_mask */ | |
503 | 0xffffffff, /* dst_mask */ | |
504 | false), /* pcrel_offset */ | |
505 | ||
506 | /* Like R_PPC64_ADDR16, but may be unaligned. */ | |
507 | HOWTO (R_PPC64_UADDR16, /* type */ | |
508 | 0, /* rightshift */ | |
509 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
510 | 16, /* bitsize */ | |
511 | false, /* pc_relative */ | |
512 | 0, /* bitpos */ | |
513 | complain_overflow_bitfield, /* complain_on_overflow */ | |
514 | bfd_elf_generic_reloc, /* special_function */ | |
515 | "R_PPC64_UADDR16", /* name */ | |
516 | false, /* partial_inplace */ | |
517 | 0, /* src_mask */ | |
518 | 0xffff, /* dst_mask */ | |
519 | false), /* pcrel_offset */ | |
520 | ||
521 | /* 32-bit PC relative. */ | |
522 | HOWTO (R_PPC64_REL32, /* type */ | |
523 | 0, /* rightshift */ | |
524 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
525 | 32, /* bitsize */ | |
526 | true, /* pc_relative */ | |
527 | 0, /* bitpos */ | |
cedb70c5 | 528 | /* FIXME: Verify. Was complain_overflow_bitfield. */ |
5bd4f169 AM |
529 | complain_overflow_signed, /* complain_on_overflow */ |
530 | bfd_elf_generic_reloc, /* special_function */ | |
531 | "R_PPC64_REL32", /* name */ | |
532 | false, /* partial_inplace */ | |
533 | 0, /* src_mask */ | |
534 | 0xffffffff, /* dst_mask */ | |
535 | true), /* pcrel_offset */ | |
536 | ||
10ed1bba | 537 | /* 32-bit relocation to the symbol's procedure linkage table. */ |
5bd4f169 AM |
538 | HOWTO (R_PPC64_PLT32, /* type */ |
539 | 0, /* rightshift */ | |
540 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
541 | 32, /* bitsize */ | |
542 | false, /* pc_relative */ | |
543 | 0, /* bitpos */ | |
544 | complain_overflow_bitfield, /* complain_on_overflow */ | |
805fc799 | 545 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 AM |
546 | "R_PPC64_PLT32", /* name */ |
547 | false, /* partial_inplace */ | |
548 | 0, /* src_mask */ | |
549 | 0, /* dst_mask */ | |
550 | false), /* pcrel_offset */ | |
551 | ||
552 | /* 32-bit PC relative relocation to the symbol's procedure linkage table. | |
553 | FIXME: R_PPC64_PLTREL32 not supported. */ | |
554 | HOWTO (R_PPC64_PLTREL32, /* type */ | |
555 | 0, /* rightshift */ | |
556 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
557 | 32, /* bitsize */ | |
558 | true, /* pc_relative */ | |
559 | 0, /* bitpos */ | |
560 | complain_overflow_signed, /* complain_on_overflow */ | |
561 | bfd_elf_generic_reloc, /* special_function */ | |
562 | "R_PPC64_PLTREL32", /* name */ | |
563 | false, /* partial_inplace */ | |
564 | 0, /* src_mask */ | |
565 | 0, /* dst_mask */ | |
566 | true), /* pcrel_offset */ | |
567 | ||
568 | /* Like R_PPC64_ADDR16_LO, but referring to the PLT table entry for | |
569 | the symbol. */ | |
570 | HOWTO (R_PPC64_PLT16_LO, /* type */ | |
571 | 0, /* rightshift */ | |
572 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
573 | 16, /* bitsize */ | |
574 | false, /* pc_relative */ | |
575 | 0, /* bitpos */ | |
576 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 577 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 AM |
578 | "R_PPC64_PLT16_LO", /* name */ |
579 | false, /* partial_inplace */ | |
580 | 0, /* src_mask */ | |
581 | 0xffff, /* dst_mask */ | |
582 | false), /* pcrel_offset */ | |
583 | ||
584 | /* Like R_PPC64_ADDR16_HI, but referring to the PLT table entry for | |
585 | the symbol. */ | |
586 | HOWTO (R_PPC64_PLT16_HI, /* type */ | |
587 | 16, /* rightshift */ | |
588 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
589 | 16, /* bitsize */ | |
590 | false, /* pc_relative */ | |
591 | 0, /* bitpos */ | |
592 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 593 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 AM |
594 | "R_PPC64_PLT16_HI", /* name */ |
595 | false, /* partial_inplace */ | |
596 | 0, /* src_mask */ | |
597 | 0xffff, /* dst_mask */ | |
598 | false), /* pcrel_offset */ | |
599 | ||
600 | /* Like R_PPC64_ADDR16_HA, but referring to the PLT table entry for | |
601 | the symbol. */ | |
602 | HOWTO (R_PPC64_PLT16_HA, /* type */ | |
603 | 16, /* rightshift */ | |
604 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
605 | 16, /* bitsize */ | |
606 | false, /* pc_relative */ | |
607 | 0, /* bitpos */ | |
608 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 609 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 AM |
610 | "R_PPC64_PLT16_HA", /* name */ |
611 | false, /* partial_inplace */ | |
612 | 0, /* src_mask */ | |
613 | 0xffff, /* dst_mask */ | |
614 | false), /* pcrel_offset */ | |
615 | ||
c061c2d8 | 616 | /* 16-bit section relative relocation. */ |
5bd4f169 AM |
617 | HOWTO (R_PPC64_SECTOFF, /* type */ |
618 | 0, /* rightshift */ | |
c061c2d8 AM |
619 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
620 | 16, /* bitsize */ | |
805fc799 | 621 | false, /* pc_relative */ |
5bd4f169 AM |
622 | 0, /* bitpos */ |
623 | complain_overflow_bitfield, /* complain_on_overflow */ | |
805fc799 | 624 | ppc64_elf_sectoff_reloc, /* special_function */ |
5bd4f169 AM |
625 | "R_PPC64_SECTOFF", /* name */ |
626 | false, /* partial_inplace */ | |
627 | 0, /* src_mask */ | |
c061c2d8 | 628 | 0xffff, /* dst_mask */ |
805fc799 | 629 | false), /* pcrel_offset */ |
5bd4f169 | 630 | |
c061c2d8 | 631 | /* Like R_PPC64_SECTOFF, but no overflow warning. */ |
5bd4f169 AM |
632 | HOWTO (R_PPC64_SECTOFF_LO, /* type */ |
633 | 0, /* rightshift */ | |
634 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
635 | 16, /* bitsize */ | |
636 | false, /* pc_relative */ | |
637 | 0, /* bitpos */ | |
638 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 639 | ppc64_elf_sectoff_reloc, /* special_function */ |
5bd4f169 AM |
640 | "R_PPC64_SECTOFF_LO", /* name */ |
641 | false, /* partial_inplace */ | |
642 | 0, /* src_mask */ | |
643 | 0xffff, /* dst_mask */ | |
644 | false), /* pcrel_offset */ | |
645 | ||
646 | /* 16-bit upper half section relative relocation. */ | |
647 | HOWTO (R_PPC64_SECTOFF_HI, /* type */ | |
648 | 16, /* rightshift */ | |
649 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
650 | 16, /* bitsize */ | |
651 | false, /* pc_relative */ | |
652 | 0, /* bitpos */ | |
653 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 654 | ppc64_elf_sectoff_reloc, /* special_function */ |
5bd4f169 AM |
655 | "R_PPC64_SECTOFF_HI", /* name */ |
656 | false, /* partial_inplace */ | |
657 | 0, /* src_mask */ | |
658 | 0xffff, /* dst_mask */ | |
659 | false), /* pcrel_offset */ | |
660 | ||
661 | /* 16-bit upper half adjusted section relative relocation. */ | |
662 | HOWTO (R_PPC64_SECTOFF_HA, /* type */ | |
663 | 16, /* rightshift */ | |
664 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
665 | 16, /* bitsize */ | |
666 | false, /* pc_relative */ | |
667 | 0, /* bitpos */ | |
668 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 669 | ppc64_elf_sectoff_ha_reloc, /* special_function */ |
5bd4f169 AM |
670 | "R_PPC64_SECTOFF_HA", /* name */ |
671 | false, /* partial_inplace */ | |
672 | 0, /* src_mask */ | |
673 | 0xffff, /* dst_mask */ | |
674 | false), /* pcrel_offset */ | |
675 | ||
676 | /* Like R_PPC64_REL24 without touching the two least significant | |
805fc799 | 677 | bits. Should have been named R_PPC64_REL30! */ |
5bd4f169 AM |
678 | HOWTO (R_PPC64_ADDR30, /* type */ |
679 | 2, /* rightshift */ | |
680 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
681 | 30, /* bitsize */ | |
682 | true, /* pc_relative */ | |
683 | 0, /* bitpos */ | |
684 | complain_overflow_dont, /* complain_on_overflow */ | |
685 | bfd_elf_generic_reloc, /* special_function */ | |
686 | "R_PPC64_ADDR30", /* name */ | |
687 | false, /* partial_inplace */ | |
688 | 0, /* src_mask */ | |
689 | 0xfffffffc, /* dst_mask */ | |
690 | true), /* pcrel_offset */ | |
691 | ||
692 | /* Relocs in the 64-bit PowerPC ELF ABI, not in the 32-bit ABI. */ | |
693 | ||
694 | /* A standard 64-bit relocation. */ | |
695 | HOWTO (R_PPC64_ADDR64, /* type */ | |
696 | 0, /* rightshift */ | |
697 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
698 | 64, /* bitsize */ | |
699 | false, /* pc_relative */ | |
700 | 0, /* bitpos */ | |
701 | complain_overflow_dont, /* complain_on_overflow */ | |
702 | bfd_elf_generic_reloc, /* special_function */ | |
703 | "R_PPC64_ADDR64", /* name */ | |
704 | false, /* partial_inplace */ | |
705 | 0, /* src_mask */ | |
706 | 0xffffffffffffffff, /* dst_mask */ | |
707 | false), /* pcrel_offset */ | |
708 | ||
709 | /* The bits 32-47 of an address. */ | |
710 | HOWTO (R_PPC64_ADDR16_HIGHER, /* type */ | |
711 | 32, /* rightshift */ | |
712 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
713 | 16, /* bitsize */ | |
714 | false, /* pc_relative */ | |
715 | 0, /* bitpos */ | |
716 | complain_overflow_dont, /* complain_on_overflow */ | |
717 | bfd_elf_generic_reloc, /* special_function */ | |
718 | "R_PPC64_ADDR16_HIGHER", /* name */ | |
719 | false, /* partial_inplace */ | |
720 | 0, /* src_mask */ | |
721 | 0xffff, /* dst_mask */ | |
722 | false), /* pcrel_offset */ | |
723 | ||
724 | /* The bits 32-47 of an address, plus 1 if the contents of the low | |
725 | 16 bits, treated as a signed number, is negative. */ | |
726 | HOWTO (R_PPC64_ADDR16_HIGHERA, /* type */ | |
727 | 32, /* rightshift */ | |
728 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
729 | 16, /* bitsize */ | |
730 | false, /* pc_relative */ | |
731 | 0, /* bitpos */ | |
732 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 733 | ppc64_elf_ha_reloc, /* special_function */ |
5bd4f169 AM |
734 | "R_PPC64_ADDR16_HIGHERA", /* name */ |
735 | false, /* partial_inplace */ | |
736 | 0, /* src_mask */ | |
737 | 0xffff, /* dst_mask */ | |
738 | false), /* pcrel_offset */ | |
739 | ||
740 | /* The bits 48-63 of an address. */ | |
741 | HOWTO (R_PPC64_ADDR16_HIGHEST,/* type */ | |
742 | 48, /* rightshift */ | |
743 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
744 | 16, /* bitsize */ | |
745 | false, /* pc_relative */ | |
746 | 0, /* bitpos */ | |
747 | complain_overflow_dont, /* complain_on_overflow */ | |
748 | bfd_elf_generic_reloc, /* special_function */ | |
749 | "R_PPC64_ADDR16_HIGHEST", /* name */ | |
750 | false, /* partial_inplace */ | |
751 | 0, /* src_mask */ | |
752 | 0xffff, /* dst_mask */ | |
753 | false), /* pcrel_offset */ | |
754 | ||
755 | /* The bits 48-63 of an address, plus 1 if the contents of the low | |
756 | 16 bits, treated as a signed number, is negative. */ | |
757 | HOWTO (R_PPC64_ADDR16_HIGHESTA,/* type */ | |
758 | 48, /* rightshift */ | |
759 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
760 | 16, /* bitsize */ | |
761 | false, /* pc_relative */ | |
762 | 0, /* bitpos */ | |
763 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 764 | ppc64_elf_ha_reloc, /* special_function */ |
5bd4f169 AM |
765 | "R_PPC64_ADDR16_HIGHESTA", /* name */ |
766 | false, /* partial_inplace */ | |
767 | 0, /* src_mask */ | |
768 | 0xffff, /* dst_mask */ | |
769 | false), /* pcrel_offset */ | |
770 | ||
771 | /* Like ADDR64, but may be unaligned. */ | |
772 | HOWTO (R_PPC64_UADDR64, /* type */ | |
773 | 0, /* rightshift */ | |
774 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
775 | 64, /* bitsize */ | |
776 | false, /* pc_relative */ | |
777 | 0, /* bitpos */ | |
778 | complain_overflow_dont, /* complain_on_overflow */ | |
779 | bfd_elf_generic_reloc, /* special_function */ | |
780 | "R_PPC64_UADDR64", /* name */ | |
781 | false, /* partial_inplace */ | |
782 | 0, /* src_mask */ | |
783 | 0xffffffffffffffff, /* dst_mask */ | |
784 | false), /* pcrel_offset */ | |
785 | ||
786 | /* 64-bit relative relocation. */ | |
787 | HOWTO (R_PPC64_REL64, /* type */ | |
788 | 0, /* rightshift */ | |
789 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
790 | 64, /* bitsize */ | |
791 | true, /* pc_relative */ | |
792 | 0, /* bitpos */ | |
793 | complain_overflow_dont, /* complain_on_overflow */ | |
794 | bfd_elf_generic_reloc, /* special_function */ | |
795 | "R_PPC64_REL64", /* name */ | |
796 | false, /* partial_inplace */ | |
797 | 0, /* src_mask */ | |
798 | 0xffffffffffffffff, /* dst_mask */ | |
799 | true), /* pcrel_offset */ | |
800 | ||
cedb70c5 | 801 | /* 64-bit relocation to the symbol's procedure linkage table. */ |
5bd4f169 AM |
802 | HOWTO (R_PPC64_PLT64, /* type */ |
803 | 0, /* rightshift */ | |
804 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
805 | 64, /* bitsize */ | |
806 | false, /* pc_relative */ | |
807 | 0, /* bitpos */ | |
808 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 809 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 AM |
810 | "R_PPC64_PLT64", /* name */ |
811 | false, /* partial_inplace */ | |
812 | 0, /* src_mask */ | |
813 | 0, /* dst_mask */ | |
814 | false), /* pcrel_offset */ | |
815 | ||
816 | /* 64-bit PC relative relocation to the symbol's procedure linkage | |
817 | table. */ | |
818 | /* FIXME: R_PPC64_PLTREL64 not supported. */ | |
819 | HOWTO (R_PPC64_PLTREL64, /* type */ | |
820 | 0, /* rightshift */ | |
821 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
822 | 64, /* bitsize */ | |
823 | true, /* pc_relative */ | |
824 | 0, /* bitpos */ | |
825 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 826 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 AM |
827 | "R_PPC64_PLTREL64", /* name */ |
828 | false, /* partial_inplace */ | |
829 | 0, /* src_mask */ | |
830 | 0, /* dst_mask */ | |
831 | true), /* pcrel_offset */ | |
832 | ||
833 | /* 16 bit TOC-relative relocation. */ | |
834 | ||
835 | /* R_PPC64_TOC16 47 half16* S + A - .TOC. */ | |
836 | HOWTO (R_PPC64_TOC16, /* type */ | |
837 | 0, /* rightshift */ | |
838 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
839 | 16, /* bitsize */ | |
840 | false, /* pc_relative */ | |
841 | 0, /* bitpos */ | |
842 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 843 | ppc64_elf_toc_reloc, /* special_function */ |
5bd4f169 AM |
844 | "R_PPC64_TOC16", /* name */ |
845 | false, /* partial_inplace */ | |
846 | 0, /* src_mask */ | |
847 | 0xffff, /* dst_mask */ | |
848 | false), /* pcrel_offset */ | |
849 | ||
850 | /* 16 bit TOC-relative relocation without overflow. */ | |
851 | ||
852 | /* R_PPC64_TOC16_LO 48 half16 #lo (S + A - .TOC.) */ | |
853 | HOWTO (R_PPC64_TOC16_LO, /* type */ | |
854 | 0, /* rightshift */ | |
855 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
856 | 16, /* bitsize */ | |
857 | false, /* pc_relative */ | |
858 | 0, /* bitpos */ | |
859 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 860 | ppc64_elf_toc_reloc, /* special_function */ |
5bd4f169 AM |
861 | "R_PPC64_TOC16_LO", /* name */ |
862 | false, /* partial_inplace */ | |
863 | 0, /* src_mask */ | |
864 | 0xffff, /* dst_mask */ | |
865 | false), /* pcrel_offset */ | |
866 | ||
867 | /* 16 bit TOC-relative relocation, high 16 bits. */ | |
868 | ||
869 | /* R_PPC64_TOC16_HI 49 half16 #hi (S + A - .TOC.) */ | |
870 | HOWTO (R_PPC64_TOC16_HI, /* type */ | |
871 | 16, /* rightshift */ | |
872 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
873 | 16, /* bitsize */ | |
874 | false, /* pc_relative */ | |
875 | 0, /* bitpos */ | |
876 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 877 | ppc64_elf_toc_reloc, /* special_function */ |
5bd4f169 AM |
878 | "R_PPC64_TOC16_HI", /* name */ |
879 | false, /* partial_inplace */ | |
880 | 0, /* src_mask */ | |
881 | 0xffff, /* dst_mask */ | |
882 | false), /* pcrel_offset */ | |
883 | ||
884 | /* 16 bit TOC-relative relocation, high 16 bits, plus 1 if the | |
885 | contents of the low 16 bits, treated as a signed number, is | |
886 | negative. */ | |
887 | ||
888 | /* R_PPC64_TOC16_HA 50 half16 #ha (S + A - .TOC.) */ | |
889 | HOWTO (R_PPC64_TOC16_HA, /* type */ | |
890 | 16, /* rightshift */ | |
891 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
892 | 16, /* bitsize */ | |
893 | false, /* pc_relative */ | |
894 | 0, /* bitpos */ | |
895 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 896 | ppc64_elf_toc_ha_reloc, /* special_function */ |
5bd4f169 AM |
897 | "R_PPC64_TOC16_HA", /* name */ |
898 | false, /* partial_inplace */ | |
899 | 0, /* src_mask */ | |
900 | 0xffff, /* dst_mask */ | |
901 | false), /* pcrel_offset */ | |
902 | ||
903 | /* 64-bit relocation; insert value of TOC base (.TOC.). */ | |
904 | ||
905 | /* R_PPC64_TOC 51 doubleword64 .TOC. */ | |
906 | HOWTO (R_PPC64_TOC, /* type */ | |
907 | 0, /* rightshift */ | |
908 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
909 | 64, /* bitsize */ | |
910 | false, /* pc_relative */ | |
911 | 0, /* bitpos */ | |
912 | complain_overflow_bitfield, /* complain_on_overflow */ | |
805fc799 | 913 | ppc64_elf_toc64_reloc, /* special_function */ |
5bd4f169 AM |
914 | "R_PPC64_TOC", /* name */ |
915 | false, /* partial_inplace */ | |
916 | 0, /* src_mask */ | |
917 | 0xffffffffffffffff, /* dst_mask */ | |
918 | false), /* pcrel_offset */ | |
919 | ||
920 | /* Like R_PPC64_GOT16, but also informs the link editor that the | |
921 | value to relocate may (!) refer to a PLT entry which the link | |
922 | editor (a) may replace with the symbol value. If the link editor | |
923 | is unable to fully resolve the symbol, it may (b) create a PLT | |
924 | entry and store the address to the new PLT entry in the GOT. | |
925 | This permits lazy resolution of function symbols at run time. | |
926 | The link editor may also skip all of this and just (c) emit a | |
927 | R_PPC64_GLOB_DAT to tie the symbol to the GOT entry. */ | |
928 | /* FIXME: R_PPC64_PLTGOT16 not implemented. */ | |
929 | HOWTO (R_PPC64_PLTGOT16, /* type */ | |
930 | 0, /* rightshift */ | |
931 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
932 | 16, /* bitsize */ | |
933 | false, /* pc_relative */ | |
934 | 0, /* bitpos */ | |
935 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 936 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 AM |
937 | "R_PPC64_PLTGOT16", /* name */ |
938 | false, /* partial_inplace */ | |
939 | 0, /* src_mask */ | |
940 | 0xffff, /* dst_mask */ | |
941 | false), /* pcrel_offset */ | |
942 | ||
943 | /* Like R_PPC64_PLTGOT16, but without overflow. */ | |
944 | /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */ | |
945 | HOWTO (R_PPC64_PLTGOT16_LO, /* type */ | |
946 | 0, /* rightshift */ | |
947 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
948 | 16, /* bitsize */ | |
949 | false, /* pc_relative */ | |
950 | 0, /* bitpos */ | |
951 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 952 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 AM |
953 | "R_PPC64_PLTGOT16_LO", /* name */ |
954 | false, /* partial_inplace */ | |
955 | 0, /* src_mask */ | |
956 | 0xffff, /* dst_mask */ | |
957 | false), /* pcrel_offset */ | |
958 | ||
959 | /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address. */ | |
960 | /* FIXME: R_PPC64_PLTGOT16_HI not implemented. */ | |
961 | HOWTO (R_PPC64_PLTGOT16_HI, /* type */ | |
962 | 16, /* rightshift */ | |
963 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
964 | 16, /* bitsize */ | |
965 | false, /* pc_relative */ | |
966 | 0, /* bitpos */ | |
967 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 968 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 AM |
969 | "R_PPC64_PLTGOT16_HI", /* name */ |
970 | false, /* partial_inplace */ | |
971 | 0, /* src_mask */ | |
972 | 0xffff, /* dst_mask */ | |
973 | false), /* pcrel_offset */ | |
974 | ||
975 | /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address, plus | |
976 | 1 if the contents of the low 16 bits, treated as a signed number, | |
977 | is negative. */ | |
978 | /* FIXME: R_PPC64_PLTGOT16_HA not implemented. */ | |
979 | HOWTO (R_PPC64_PLTGOT16_HA, /* type */ | |
980 | 16, /* rightshift */ | |
981 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
982 | 16, /* bitsize */ | |
983 | false, /* pc_relative */ | |
984 | 0, /* bitpos */ | |
985 | complain_overflow_dont,/* complain_on_overflow */ | |
805fc799 | 986 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 AM |
987 | "R_PPC64_PLTGOT16_HA", /* name */ |
988 | false, /* partial_inplace */ | |
989 | 0, /* src_mask */ | |
990 | 0xffff, /* dst_mask */ | |
991 | false), /* pcrel_offset */ | |
992 | ||
993 | /* Like R_PPC64_ADDR16, but for instructions with a DS field. */ | |
994 | HOWTO (R_PPC64_ADDR16_DS, /* type */ | |
995 | 0, /* rightshift */ | |
996 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
997 | 16, /* bitsize */ | |
998 | false, /* pc_relative */ | |
999 | 0, /* bitpos */ | |
1000 | complain_overflow_bitfield, /* complain_on_overflow */ | |
1001 | bfd_elf_generic_reloc, /* special_function */ | |
1002 | "R_PPC64_ADDR16_DS", /* name */ | |
1003 | false, /* partial_inplace */ | |
1004 | 0, /* src_mask */ | |
1005 | 0xfffc, /* dst_mask */ | |
1006 | false), /* pcrel_offset */ | |
1007 | ||
1008 | /* Like R_PPC64_ADDR16_LO, but for instructions with a DS field. */ | |
1009 | HOWTO (R_PPC64_ADDR16_LO_DS, /* type */ | |
1010 | 0, /* rightshift */ | |
1011 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1012 | 16, /* bitsize */ | |
1013 | false, /* pc_relative */ | |
1014 | 0, /* bitpos */ | |
1015 | complain_overflow_dont,/* complain_on_overflow */ | |
1016 | bfd_elf_generic_reloc, /* special_function */ | |
1017 | "R_PPC64_ADDR16_LO_DS",/* name */ | |
1018 | false, /* partial_inplace */ | |
1019 | 0, /* src_mask */ | |
1020 | 0xfffc, /* dst_mask */ | |
1021 | false), /* pcrel_offset */ | |
1022 | ||
1023 | /* Like R_PPC64_GOT16, but for instructions with a DS field. */ | |
1024 | HOWTO (R_PPC64_GOT16_DS, /* type */ | |
1025 | 0, /* rightshift */ | |
1026 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1027 | 16, /* bitsize */ | |
1028 | false, /* pc_relative */ | |
1029 | 0, /* bitpos */ | |
1030 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 1031 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 AM |
1032 | "R_PPC64_GOT16_DS", /* name */ |
1033 | false, /* partial_inplace */ | |
1034 | 0, /* src_mask */ | |
1035 | 0xfffc, /* dst_mask */ | |
1036 | false), /* pcrel_offset */ | |
1037 | ||
1038 | /* Like R_PPC64_GOT16_LO, but for instructions with a DS field. */ | |
1039 | HOWTO (R_PPC64_GOT16_LO_DS, /* type */ | |
1040 | 0, /* rightshift */ | |
1041 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1042 | 16, /* bitsize */ | |
1043 | false, /* pc_relative */ | |
1044 | 0, /* bitpos */ | |
1045 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 1046 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 AM |
1047 | "R_PPC64_GOT16_LO_DS", /* name */ |
1048 | false, /* partial_inplace */ | |
1049 | 0, /* src_mask */ | |
1050 | 0xfffc, /* dst_mask */ | |
1051 | false), /* pcrel_offset */ | |
1052 | ||
1053 | /* Like R_PPC64_PLT16_LO, but for instructions with a DS field. */ | |
1054 | HOWTO (R_PPC64_PLT16_LO_DS, /* type */ | |
1055 | 0, /* rightshift */ | |
1056 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1057 | 16, /* bitsize */ | |
1058 | false, /* pc_relative */ | |
1059 | 0, /* bitpos */ | |
1060 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 1061 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 AM |
1062 | "R_PPC64_PLT16_LO_DS", /* name */ |
1063 | false, /* partial_inplace */ | |
1064 | 0, /* src_mask */ | |
1065 | 0xfffc, /* dst_mask */ | |
1066 | false), /* pcrel_offset */ | |
1067 | ||
1068 | /* Like R_PPC64_SECTOFF, but for instructions with a DS field. */ | |
5bd4f169 AM |
1069 | HOWTO (R_PPC64_SECTOFF_DS, /* type */ |
1070 | 0, /* rightshift */ | |
c061c2d8 AM |
1071 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1072 | 16, /* bitsize */ | |
805fc799 | 1073 | false, /* pc_relative */ |
5bd4f169 AM |
1074 | 0, /* bitpos */ |
1075 | complain_overflow_bitfield, /* complain_on_overflow */ | |
805fc799 | 1076 | ppc64_elf_sectoff_reloc, /* special_function */ |
5bd4f169 AM |
1077 | "R_PPC64_SECTOFF_DS", /* name */ |
1078 | false, /* partial_inplace */ | |
1079 | 0, /* src_mask */ | |
c061c2d8 | 1080 | 0xfffc, /* dst_mask */ |
805fc799 | 1081 | false), /* pcrel_offset */ |
5bd4f169 AM |
1082 | |
1083 | /* Like R_PPC64_SECTOFF_LO, but for instructions with a DS field. */ | |
1084 | HOWTO (R_PPC64_SECTOFF_LO_DS, /* type */ | |
1085 | 0, /* rightshift */ | |
1086 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1087 | 16, /* bitsize */ | |
1088 | false, /* pc_relative */ | |
1089 | 0, /* bitpos */ | |
1090 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 1091 | ppc64_elf_sectoff_reloc, /* special_function */ |
5bd4f169 AM |
1092 | "R_PPC64_SECTOFF_LO_DS",/* name */ |
1093 | false, /* partial_inplace */ | |
1094 | 0, /* src_mask */ | |
1095 | 0xfffc, /* dst_mask */ | |
1096 | false), /* pcrel_offset */ | |
1097 | ||
1098 | /* Like R_PPC64_TOC16, but for instructions with a DS field. */ | |
1099 | HOWTO (R_PPC64_TOC16_DS, /* type */ | |
1100 | 0, /* rightshift */ | |
1101 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1102 | 16, /* bitsize */ | |
1103 | false, /* pc_relative */ | |
1104 | 0, /* bitpos */ | |
1105 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 1106 | ppc64_elf_toc_reloc, /* special_function */ |
5bd4f169 AM |
1107 | "R_PPC64_TOC16_DS", /* name */ |
1108 | false, /* partial_inplace */ | |
1109 | 0, /* src_mask */ | |
1110 | 0xfffc, /* dst_mask */ | |
1111 | false), /* pcrel_offset */ | |
1112 | ||
1113 | /* Like R_PPC64_TOC16_LO, but for instructions with a DS field. */ | |
1114 | HOWTO (R_PPC64_TOC16_LO_DS, /* type */ | |
1115 | 0, /* rightshift */ | |
1116 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1117 | 16, /* bitsize */ | |
1118 | false, /* pc_relative */ | |
1119 | 0, /* bitpos */ | |
1120 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 1121 | ppc64_elf_toc_reloc, /* special_function */ |
5bd4f169 AM |
1122 | "R_PPC64_TOC16_LO_DS", /* name */ |
1123 | false, /* partial_inplace */ | |
1124 | 0, /* src_mask */ | |
1125 | 0xfffc, /* dst_mask */ | |
1126 | false), /* pcrel_offset */ | |
1127 | ||
1128 | /* Like R_PPC64_PLTGOT16, but for instructions with a DS field. */ | |
1129 | /* FIXME: R_PPC64_PLTGOT16_DS not implemented. */ | |
1130 | HOWTO (R_PPC64_PLTGOT16_DS, /* type */ | |
1131 | 0, /* rightshift */ | |
1132 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1133 | 16, /* bitsize */ | |
1134 | false, /* pc_relative */ | |
1135 | 0, /* bitpos */ | |
1136 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 1137 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 AM |
1138 | "R_PPC64_PLTGOT16_DS", /* name */ |
1139 | false, /* partial_inplace */ | |
1140 | 0, /* src_mask */ | |
1141 | 0xfffc, /* dst_mask */ | |
1142 | false), /* pcrel_offset */ | |
1143 | ||
1144 | /* Like R_PPC64_PLTGOT16_LO, but for instructions with a DS field. */ | |
1145 | /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */ | |
1146 | HOWTO (R_PPC64_PLTGOT16_LO_DS,/* type */ | |
1147 | 0, /* rightshift */ | |
1148 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1149 | 16, /* bitsize */ | |
1150 | false, /* pc_relative */ | |
1151 | 0, /* bitpos */ | |
1152 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 1153 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 AM |
1154 | "R_PPC64_PLTGOT16_LO_DS",/* name */ |
1155 | false, /* partial_inplace */ | |
1156 | 0, /* src_mask */ | |
1157 | 0xfffc, /* dst_mask */ | |
1158 | false), /* pcrel_offset */ | |
1159 | ||
1160 | /* GNU extension to record C++ vtable hierarchy. */ | |
1161 | HOWTO (R_PPC64_GNU_VTINHERIT, /* type */ | |
1162 | 0, /* rightshift */ | |
1163 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
1164 | 0, /* bitsize */ | |
1165 | false, /* pc_relative */ | |
1166 | 0, /* bitpos */ | |
1167 | complain_overflow_dont, /* complain_on_overflow */ | |
1168 | NULL, /* special_function */ | |
1169 | "R_PPC64_GNU_VTINHERIT", /* name */ | |
1170 | false, /* partial_inplace */ | |
1171 | 0, /* src_mask */ | |
1172 | 0, /* dst_mask */ | |
1173 | false), /* pcrel_offset */ | |
1174 | ||
1175 | /* GNU extension to record C++ vtable member usage. */ | |
1176 | HOWTO (R_PPC64_GNU_VTENTRY, /* type */ | |
1177 | 0, /* rightshift */ | |
1178 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
1179 | 0, /* bitsize */ | |
1180 | false, /* pc_relative */ | |
1181 | 0, /* bitpos */ | |
1182 | complain_overflow_dont, /* complain_on_overflow */ | |
1183 | NULL, /* special_function */ | |
1184 | "R_PPC64_GNU_VTENTRY", /* name */ | |
1185 | false, /* partial_inplace */ | |
1186 | 0, /* src_mask */ | |
1187 | 0, /* dst_mask */ | |
1188 | false), /* pcrel_offset */ | |
1189 | }; | |
1190 | ||
1191 | \f | |
1192 | /* Initialize the ppc64_elf_howto_table, so that linear accesses can | |
1193 | be done. */ | |
1194 | ||
1195 | static void | |
1196 | ppc_howto_init () | |
1197 | { | |
1198 | unsigned int i, type; | |
1199 | ||
1200 | for (i = 0; | |
1201 | i < sizeof (ppc64_elf_howto_raw) / sizeof (ppc64_elf_howto_raw[0]); | |
1202 | i++) | |
1203 | { | |
1204 | type = ppc64_elf_howto_raw[i].type; | |
1205 | BFD_ASSERT (type < (sizeof (ppc64_elf_howto_table) | |
1206 | / sizeof (ppc64_elf_howto_table[0]))); | |
1207 | ppc64_elf_howto_table[type] = &ppc64_elf_howto_raw[i]; | |
1208 | } | |
1209 | } | |
1210 | ||
1211 | static reloc_howto_type * | |
1212 | ppc64_elf_reloc_type_lookup (abfd, code) | |
1213 | bfd *abfd ATTRIBUTE_UNUSED; | |
1214 | bfd_reloc_code_real_type code; | |
1215 | { | |
1216 | enum elf_ppc_reloc_type ppc_reloc = R_PPC_NONE; | |
1217 | ||
1218 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) | |
1219 | /* Initialize howto table if needed. */ | |
1220 | ppc_howto_init (); | |
1221 | ||
1222 | switch ((int) code) | |
1223 | { | |
1224 | default: | |
1225 | return (reloc_howto_type *) NULL; | |
1226 | ||
1227 | case BFD_RELOC_NONE: ppc_reloc = R_PPC64_NONE; | |
1228 | break; | |
1229 | case BFD_RELOC_32: ppc_reloc = R_PPC64_ADDR32; | |
1230 | break; | |
1231 | case BFD_RELOC_PPC_BA26: ppc_reloc = R_PPC64_ADDR24; | |
1232 | break; | |
1233 | case BFD_RELOC_16: ppc_reloc = R_PPC64_ADDR16; | |
1234 | break; | |
1235 | case BFD_RELOC_LO16: ppc_reloc = R_PPC64_ADDR16_LO; | |
1236 | break; | |
1237 | case BFD_RELOC_HI16: ppc_reloc = R_PPC64_ADDR16_HI; | |
1238 | break; | |
1239 | case BFD_RELOC_HI16_S: ppc_reloc = R_PPC64_ADDR16_HA; | |
1240 | break; | |
1241 | case BFD_RELOC_PPC_BA16: ppc_reloc = R_PPC64_ADDR14; | |
1242 | break; | |
1243 | case BFD_RELOC_PPC_BA16_BRTAKEN: ppc_reloc = R_PPC64_ADDR14_BRTAKEN; | |
1244 | break; | |
1245 | case BFD_RELOC_PPC_BA16_BRNTAKEN: ppc_reloc = R_PPC64_ADDR14_BRNTAKEN; | |
1246 | break; | |
1247 | case BFD_RELOC_PPC_B26: ppc_reloc = R_PPC64_REL24; | |
1248 | break; | |
1249 | case BFD_RELOC_PPC_B16: ppc_reloc = R_PPC64_REL14; | |
1250 | break; | |
1251 | case BFD_RELOC_PPC_B16_BRTAKEN: ppc_reloc = R_PPC64_REL14_BRTAKEN; | |
1252 | break; | |
1253 | case BFD_RELOC_PPC_B16_BRNTAKEN: ppc_reloc = R_PPC64_REL14_BRNTAKEN; | |
1254 | break; | |
1255 | case BFD_RELOC_16_GOTOFF: ppc_reloc = R_PPC64_GOT16; | |
1256 | break; | |
1257 | case BFD_RELOC_LO16_GOTOFF: ppc_reloc = R_PPC64_GOT16_LO; | |
1258 | break; | |
1259 | case BFD_RELOC_HI16_GOTOFF: ppc_reloc = R_PPC64_GOT16_HI; | |
1260 | break; | |
1261 | case BFD_RELOC_HI16_S_GOTOFF: ppc_reloc = R_PPC64_GOT16_HA; | |
1262 | break; | |
1263 | case BFD_RELOC_PPC_COPY: ppc_reloc = R_PPC64_COPY; | |
1264 | break; | |
1265 | case BFD_RELOC_PPC_GLOB_DAT: ppc_reloc = R_PPC64_GLOB_DAT; | |
1266 | break; | |
1267 | case BFD_RELOC_32_PCREL: ppc_reloc = R_PPC64_REL32; | |
1268 | break; | |
1269 | case BFD_RELOC_32_PLTOFF: ppc_reloc = R_PPC64_PLT32; | |
1270 | break; | |
1271 | case BFD_RELOC_32_PLT_PCREL: ppc_reloc = R_PPC64_PLTREL32; | |
1272 | break; | |
1273 | case BFD_RELOC_LO16_PLTOFF: ppc_reloc = R_PPC64_PLT16_LO; | |
1274 | break; | |
1275 | case BFD_RELOC_HI16_PLTOFF: ppc_reloc = R_PPC64_PLT16_HI; | |
1276 | break; | |
1277 | case BFD_RELOC_HI16_S_PLTOFF: ppc_reloc = R_PPC64_PLT16_HA; | |
1278 | break; | |
c061c2d8 | 1279 | case BFD_RELOC_16_BASEREL: ppc_reloc = R_PPC64_SECTOFF; |
5bd4f169 AM |
1280 | break; |
1281 | case BFD_RELOC_LO16_BASEREL: ppc_reloc = R_PPC64_SECTOFF_LO; | |
1282 | break; | |
1283 | case BFD_RELOC_HI16_BASEREL: ppc_reloc = R_PPC64_SECTOFF_HI; | |
1284 | break; | |
1285 | case BFD_RELOC_HI16_S_BASEREL: ppc_reloc = R_PPC64_SECTOFF_HA; | |
1286 | break; | |
10ed1bba | 1287 | case BFD_RELOC_CTOR: ppc_reloc = R_PPC64_ADDR64; |
5bd4f169 AM |
1288 | break; |
1289 | case BFD_RELOC_64: ppc_reloc = R_PPC64_ADDR64; | |
1290 | break; | |
1291 | case BFD_RELOC_PPC64_HIGHER: ppc_reloc = R_PPC64_ADDR16_HIGHER; | |
1292 | break; | |
1293 | case BFD_RELOC_PPC64_HIGHER_S: ppc_reloc = R_PPC64_ADDR16_HIGHERA; | |
1294 | break; | |
1295 | case BFD_RELOC_PPC64_HIGHEST: ppc_reloc = R_PPC64_ADDR16_HIGHEST; | |
1296 | break; | |
1297 | case BFD_RELOC_PPC64_HIGHEST_S: ppc_reloc = R_PPC64_ADDR16_HIGHESTA; | |
1298 | break; | |
1299 | case BFD_RELOC_64_PCREL: ppc_reloc = R_PPC64_REL64; | |
1300 | break; | |
1301 | case BFD_RELOC_64_PLTOFF: ppc_reloc = R_PPC64_PLT64; | |
1302 | break; | |
1303 | case BFD_RELOC_64_PLT_PCREL: ppc_reloc = R_PPC64_PLTREL64; | |
1304 | break; | |
1305 | case BFD_RELOC_PPC_TOC16: ppc_reloc = R_PPC64_TOC16; | |
1306 | break; | |
1307 | case BFD_RELOC_PPC64_TOC16_LO: ppc_reloc = R_PPC64_TOC16_LO; | |
1308 | break; | |
1309 | case BFD_RELOC_PPC64_TOC16_HI: ppc_reloc = R_PPC64_TOC16_HI; | |
1310 | break; | |
1311 | case BFD_RELOC_PPC64_TOC16_HA: ppc_reloc = R_PPC64_TOC16_HA; | |
1312 | break; | |
1313 | case BFD_RELOC_PPC64_TOC: ppc_reloc = R_PPC64_TOC; | |
1314 | break; | |
1315 | case BFD_RELOC_PPC64_PLTGOT16: ppc_reloc = R_PPC64_PLTGOT16; | |
1316 | break; | |
1317 | case BFD_RELOC_PPC64_PLTGOT16_LO: ppc_reloc = R_PPC64_PLTGOT16_LO; | |
1318 | break; | |
1319 | case BFD_RELOC_PPC64_PLTGOT16_HI: ppc_reloc = R_PPC64_PLTGOT16_HI; | |
1320 | break; | |
1321 | case BFD_RELOC_PPC64_PLTGOT16_HA: ppc_reloc = R_PPC64_PLTGOT16_HA; | |
1322 | break; | |
1323 | case BFD_RELOC_PPC64_ADDR16_DS: ppc_reloc = R_PPC64_ADDR16_DS; | |
1324 | break; | |
1325 | case BFD_RELOC_PPC64_ADDR16_LO_DS: ppc_reloc = R_PPC64_ADDR16_LO_DS; | |
1326 | break; | |
1327 | case BFD_RELOC_PPC64_GOT16_DS: ppc_reloc = R_PPC64_GOT16_DS; | |
1328 | break; | |
1329 | case BFD_RELOC_PPC64_GOT16_LO_DS: ppc_reloc = R_PPC64_GOT16_LO_DS; | |
1330 | break; | |
1331 | case BFD_RELOC_PPC64_PLT16_LO_DS: ppc_reloc = R_PPC64_PLT16_LO_DS; | |
1332 | break; | |
1333 | case BFD_RELOC_PPC64_SECTOFF_DS: ppc_reloc = R_PPC64_SECTOFF_DS; | |
1334 | break; | |
1335 | case BFD_RELOC_PPC64_SECTOFF_LO_DS: ppc_reloc = R_PPC64_SECTOFF_LO_DS; | |
1336 | break; | |
1337 | case BFD_RELOC_PPC64_TOC16_DS: ppc_reloc = R_PPC64_TOC16_DS; | |
1338 | break; | |
1339 | case BFD_RELOC_PPC64_TOC16_LO_DS: ppc_reloc = R_PPC64_TOC16_LO_DS; | |
1340 | break; | |
1341 | case BFD_RELOC_PPC64_PLTGOT16_DS: ppc_reloc = R_PPC64_PLTGOT16_DS; | |
1342 | break; | |
1343 | case BFD_RELOC_PPC64_PLTGOT16_LO_DS: ppc_reloc = R_PPC64_PLTGOT16_LO_DS; | |
1344 | break; | |
1345 | case BFD_RELOC_VTABLE_INHERIT: ppc_reloc = R_PPC64_GNU_VTINHERIT; | |
1346 | break; | |
1347 | case BFD_RELOC_VTABLE_ENTRY: ppc_reloc = R_PPC64_GNU_VTENTRY; | |
1348 | break; | |
1349 | } | |
1350 | ||
1351 | return ppc64_elf_howto_table[(int) ppc_reloc]; | |
1352 | }; | |
1353 | ||
1354 | /* Set the howto pointer for a PowerPC ELF reloc. */ | |
1355 | ||
1356 | static void | |
1357 | ppc64_elf_info_to_howto (abfd, cache_ptr, dst) | |
1358 | bfd *abfd ATTRIBUTE_UNUSED; | |
1359 | arelent *cache_ptr; | |
1360 | Elf64_Internal_Rela *dst; | |
1361 | { | |
65f38f15 AM |
1362 | unsigned int type; |
1363 | ||
ef60b7ff | 1364 | /* Initialize howto table if needed. */ |
5bd4f169 | 1365 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) |
5bd4f169 AM |
1366 | ppc_howto_init (); |
1367 | ||
65f38f15 AM |
1368 | type = ELF64_R_TYPE (dst->r_info); |
1369 | BFD_ASSERT (type < (sizeof (ppc64_elf_howto_table) | |
1370 | / sizeof (ppc64_elf_howto_table[0]))); | |
1371 | cache_ptr->howto = ppc64_elf_howto_table[type]; | |
5bd4f169 AM |
1372 | } |
1373 | ||
65f38f15 | 1374 | /* Handle the R_PPC_ADDR16_HA and similar relocs. */ |
5bd4f169 AM |
1375 | |
1376 | static bfd_reloc_status_type | |
805fc799 AM |
1377 | ppc64_elf_ha_reloc (abfd, reloc_entry, symbol, data, |
1378 | input_section, output_bfd, error_message) | |
1379 | bfd *abfd; | |
5bd4f169 AM |
1380 | arelent *reloc_entry; |
1381 | asymbol *symbol; | |
805fc799 | 1382 | PTR data; |
5bd4f169 AM |
1383 | asection *input_section; |
1384 | bfd *output_bfd; | |
805fc799 | 1385 | char **error_message; |
5bd4f169 | 1386 | { |
805fc799 AM |
1387 | /* If this is a relocatable link (output_bfd test tells us), just |
1388 | call the generic function. Any adjustment will be done at final | |
1389 | link time. */ | |
1390 | if (output_bfd != NULL) | |
cedb70c5 | 1391 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
1392 | input_section, output_bfd, error_message); |
1393 | ||
1394 | /* Adjust the addend for sign extension of the low 16 bits. | |
1395 | We won't actually be using the low 16 bits, so trashing them | |
1396 | doesn't matter. */ | |
1397 | reloc_entry->addend += 0x8000; | |
1398 | return bfd_reloc_continue; | |
1399 | } | |
5bd4f169 | 1400 | |
805fc799 AM |
1401 | static bfd_reloc_status_type |
1402 | ppc64_elf_brtaken_reloc (abfd, reloc_entry, symbol, data, | |
1403 | input_section, output_bfd, error_message) | |
1404 | bfd *abfd; | |
1405 | arelent *reloc_entry; | |
1406 | asymbol *symbol; | |
1407 | PTR data; | |
1408 | asection *input_section; | |
1409 | bfd *output_bfd; | |
1410 | char **error_message; | |
1411 | { | |
1412 | long insn; | |
1413 | enum elf_ppc_reloc_type r_type; | |
1414 | bfd_size_type octets; | |
1415 | /* Disabled until we sort out how ld should choose 'y' vs 'at'. */ | |
1416 | boolean is_power4 = false; | |
1417 | ||
1418 | /* If this is a relocatable link (output_bfd test tells us), just | |
1419 | call the generic function. Any adjustment will be done at final | |
1420 | link time. */ | |
5bd4f169 | 1421 | if (output_bfd != NULL) |
cedb70c5 | 1422 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
1423 | input_section, output_bfd, error_message); |
1424 | ||
1425 | octets = reloc_entry->address * bfd_octets_per_byte (abfd); | |
1426 | insn = bfd_get_32 (abfd, (bfd_byte *) data + octets); | |
1427 | insn &= ~(0x01 << 21); | |
1428 | r_type = (enum elf_ppc_reloc_type) reloc_entry->howto->type; | |
1429 | if (r_type == R_PPC64_ADDR14_BRTAKEN | |
1430 | || r_type == R_PPC64_REL14_BRTAKEN) | |
cedb70c5 | 1431 | insn |= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */ |
805fc799 AM |
1432 | |
1433 | if (is_power4) | |
5bd4f169 | 1434 | { |
805fc799 AM |
1435 | /* Set 'a' bit. This is 0b00010 in BO field for branch |
1436 | on CR(BI) insns (BO == 001at or 011at), and 0b01000 | |
1437 | for branch on CTR insns (BO == 1a00t or 1a01t). */ | |
1438 | if ((insn & (0x14 << 21)) == (0x04 << 21)) | |
1439 | insn |= 0x02 << 21; | |
1440 | else if ((insn & (0x14 << 21)) == (0x10 << 21)) | |
1441 | insn |= 0x08 << 21; | |
1442 | else | |
1443 | return bfd_reloc_continue; | |
5bd4f169 | 1444 | } |
805fc799 AM |
1445 | else |
1446 | { | |
1447 | bfd_vma target = 0; | |
1448 | bfd_vma from; | |
5bd4f169 | 1449 | |
805fc799 AM |
1450 | if (!bfd_is_com_section (symbol->section)) |
1451 | target = symbol->value; | |
1452 | target += symbol->section->output_section->vma; | |
1453 | target += symbol->section->output_offset; | |
1454 | target += reloc_entry->addend; | |
5bd4f169 | 1455 | |
805fc799 AM |
1456 | from = (reloc_entry->address |
1457 | + input_section->output_offset | |
1458 | + input_section->output_section->vma); | |
5bd4f169 | 1459 | |
805fc799 AM |
1460 | /* Invert 'y' bit if not the default. */ |
1461 | if ((bfd_signed_vma) (target - from) < 0) | |
1462 | insn ^= 0x01 << 21; | |
1463 | } | |
1464 | bfd_put_32 (abfd, (bfd_vma) insn, (bfd_byte *) data + octets); | |
1465 | return bfd_reloc_continue; | |
1466 | } | |
5bd4f169 | 1467 | |
805fc799 AM |
1468 | static bfd_reloc_status_type |
1469 | ppc64_elf_sectoff_reloc (abfd, reloc_entry, symbol, data, | |
1470 | input_section, output_bfd, error_message) | |
1471 | bfd *abfd; | |
1472 | arelent *reloc_entry; | |
1473 | asymbol *symbol; | |
1474 | PTR data; | |
1475 | asection *input_section; | |
1476 | bfd *output_bfd; | |
1477 | char **error_message; | |
1478 | { | |
1479 | /* If this is a relocatable link (output_bfd test tells us), just | |
1480 | call the generic function. Any adjustment will be done at final | |
1481 | link time. */ | |
1482 | if (output_bfd != NULL) | |
cedb70c5 | 1483 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 | 1484 | input_section, output_bfd, error_message); |
5bd4f169 | 1485 | |
805fc799 AM |
1486 | /* Subtract the symbol section base address. */ |
1487 | reloc_entry->addend -= symbol->section->output_section->vma; | |
5bd4f169 AM |
1488 | return bfd_reloc_continue; |
1489 | } | |
1490 | ||
805fc799 AM |
1491 | static bfd_reloc_status_type |
1492 | ppc64_elf_sectoff_ha_reloc (abfd, reloc_entry, symbol, data, | |
1493 | input_section, output_bfd, error_message) | |
1494 | bfd *abfd; | |
1495 | arelent *reloc_entry; | |
1496 | asymbol *symbol; | |
1497 | PTR data; | |
1498 | asection *input_section; | |
1499 | bfd *output_bfd; | |
1500 | char **error_message; | |
1501 | { | |
1502 | /* If this is a relocatable link (output_bfd test tells us), just | |
1503 | call the generic function. Any adjustment will be done at final | |
1504 | link time. */ | |
1505 | if (output_bfd != NULL) | |
cedb70c5 | 1506 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
1507 | input_section, output_bfd, error_message); |
1508 | ||
1509 | /* Subtract the symbol section base address. */ | |
1510 | reloc_entry->addend -= symbol->section->output_section->vma; | |
1511 | ||
1512 | /* Adjust the addend for sign extension of the low 16 bits. */ | |
1513 | reloc_entry->addend += 0x8000; | |
1514 | return bfd_reloc_continue; | |
1515 | } | |
1516 | ||
1517 | static bfd_reloc_status_type | |
1518 | ppc64_elf_toc_reloc (abfd, reloc_entry, symbol, data, | |
1519 | input_section, output_bfd, error_message) | |
1520 | bfd *abfd; | |
1521 | arelent *reloc_entry; | |
1522 | asymbol *symbol; | |
1523 | PTR data; | |
1524 | asection *input_section; | |
1525 | bfd *output_bfd; | |
1526 | char **error_message; | |
1527 | { | |
1528 | bfd_vma TOCstart; | |
1529 | ||
1530 | /* If this is a relocatable link (output_bfd test tells us), just | |
1531 | call the generic function. Any adjustment will be done at final | |
1532 | link time. */ | |
1533 | if (output_bfd != NULL) | |
cedb70c5 | 1534 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
1535 | input_section, output_bfd, error_message); |
1536 | ||
1537 | TOCstart = _bfd_get_gp_value (input_section->output_section->owner); | |
1538 | if (TOCstart == 0) | |
1539 | TOCstart = ppc64_elf_toc (input_section->output_section->owner); | |
1540 | ||
1541 | /* Subtract the TOC base address. */ | |
1542 | reloc_entry->addend -= TOCstart + TOC_BASE_OFF; | |
1543 | return bfd_reloc_continue; | |
1544 | } | |
1545 | ||
1546 | static bfd_reloc_status_type | |
1547 | ppc64_elf_toc_ha_reloc (abfd, reloc_entry, symbol, data, | |
1548 | input_section, output_bfd, error_message) | |
1549 | bfd *abfd; | |
1550 | arelent *reloc_entry; | |
1551 | asymbol *symbol; | |
1552 | PTR data; | |
1553 | asection *input_section; | |
1554 | bfd *output_bfd; | |
1555 | char **error_message; | |
1556 | { | |
1557 | bfd_vma TOCstart; | |
1558 | ||
1559 | /* If this is a relocatable link (output_bfd test tells us), just | |
1560 | call the generic function. Any adjustment will be done at final | |
1561 | link time. */ | |
1562 | if (output_bfd != NULL) | |
cedb70c5 | 1563 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
1564 | input_section, output_bfd, error_message); |
1565 | ||
1566 | TOCstart = _bfd_get_gp_value (input_section->output_section->owner); | |
1567 | if (TOCstart == 0) | |
1568 | TOCstart = ppc64_elf_toc (input_section->output_section->owner); | |
1569 | ||
1570 | /* Subtract the TOC base address. */ | |
1571 | reloc_entry->addend -= TOCstart + TOC_BASE_OFF; | |
1572 | ||
1573 | /* Adjust the addend for sign extension of the low 16 bits. */ | |
1574 | reloc_entry->addend += 0x8000; | |
1575 | return bfd_reloc_continue; | |
1576 | } | |
1577 | ||
1578 | static bfd_reloc_status_type | |
1579 | ppc64_elf_toc64_reloc (abfd, reloc_entry, symbol, data, | |
1580 | input_section, output_bfd, error_message) | |
1581 | bfd *abfd; | |
1582 | arelent *reloc_entry; | |
1583 | asymbol *symbol; | |
1584 | PTR data; | |
1585 | asection *input_section; | |
1586 | bfd *output_bfd; | |
1587 | char **error_message; | |
1588 | { | |
1589 | bfd_vma TOCstart; | |
1590 | bfd_size_type octets; | |
1591 | ||
1592 | /* If this is a relocatable link (output_bfd test tells us), just | |
1593 | call the generic function. Any adjustment will be done at final | |
1594 | link time. */ | |
1595 | if (output_bfd != NULL) | |
cedb70c5 | 1596 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
1597 | input_section, output_bfd, error_message); |
1598 | ||
1599 | TOCstart = _bfd_get_gp_value (input_section->output_section->owner); | |
1600 | if (TOCstart == 0) | |
1601 | TOCstart = ppc64_elf_toc (input_section->output_section->owner); | |
1602 | ||
1603 | octets = reloc_entry->address * bfd_octets_per_byte (abfd); | |
1604 | bfd_put_64 (abfd, TOCstart + TOC_BASE_OFF, (bfd_byte *) data + octets); | |
1605 | return bfd_reloc_ok; | |
1606 | } | |
1607 | ||
1608 | static bfd_reloc_status_type | |
1609 | ppc64_elf_unhandled_reloc (abfd, reloc_entry, symbol, data, | |
1610 | input_section, output_bfd, error_message) | |
1611 | bfd *abfd; | |
1612 | arelent *reloc_entry; | |
1613 | asymbol *symbol; | |
1614 | PTR data; | |
1615 | asection *input_section; | |
1616 | bfd *output_bfd; | |
1617 | char **error_message; | |
1618 | { | |
1619 | /* If this is a relocatable link (output_bfd test tells us), just | |
1620 | call the generic function. Any adjustment will be done at final | |
1621 | link time. */ | |
1622 | if (output_bfd != NULL) | |
cedb70c5 | 1623 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
1624 | input_section, output_bfd, error_message); |
1625 | ||
1626 | if (error_message != NULL) | |
1627 | { | |
1628 | static char buf[60]; | |
1629 | sprintf (buf, "generic linker can't handle %s", | |
1630 | reloc_entry->howto->name); | |
1631 | *error_message = buf; | |
1632 | } | |
1633 | return bfd_reloc_dangerous; | |
1634 | } | |
1635 | ||
7cdc5bba AM |
1636 | /* Return symbol info as per usual for ELF targets, except that |
1637 | symbols in .opd are given 'd' or 'D' for type. */ | |
1638 | ||
1639 | static void | |
1640 | ppc64_elf_get_symbol_info (abfd, symbol, ret) | |
1641 | bfd *abfd; | |
1642 | asymbol *symbol; | |
1643 | symbol_info *ret; | |
1644 | { | |
1645 | _bfd_elf_get_symbol_info (abfd, symbol, ret); | |
1646 | if (ret->type == '?' | |
1647 | && (symbol->flags & (BSF_GLOBAL | BSF_LOCAL)) != 0 | |
1648 | && strcmp (symbol->section->name, ".opd") == 0) | |
1649 | ret->type = (symbol->flags & BSF_GLOBAL) != 0 ? 'D' : 'd'; | |
1650 | } | |
1651 | ||
5bd4f169 AM |
1652 | /* Function to set whether a module needs the -mrelocatable bit set. */ |
1653 | ||
1654 | static boolean | |
1655 | ppc64_elf_set_private_flags (abfd, flags) | |
1656 | bfd *abfd; | |
1657 | flagword flags; | |
1658 | { | |
1659 | BFD_ASSERT (!elf_flags_init (abfd) | |
1660 | || elf_elfheader (abfd)->e_flags == flags); | |
1661 | ||
1662 | elf_elfheader (abfd)->e_flags = flags; | |
1663 | elf_flags_init (abfd) = true; | |
1664 | return true; | |
1665 | } | |
1666 | ||
5bd4f169 AM |
1667 | /* Merge backend specific data from an object file to the output |
1668 | object file when linking. */ | |
1669 | static boolean | |
1670 | ppc64_elf_merge_private_bfd_data (ibfd, obfd) | |
1671 | bfd *ibfd; | |
1672 | bfd *obfd; | |
1673 | { | |
1674 | flagword old_flags; | |
1675 | flagword new_flags; | |
1676 | boolean error; | |
1677 | ||
1678 | /* Check if we have the same endianess. */ | |
1679 | if (ibfd->xvec->byteorder != obfd->xvec->byteorder | |
1680 | && obfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN) | |
1681 | { | |
1682 | const char *msg; | |
1683 | ||
1684 | if (bfd_big_endian (ibfd)) | |
1685 | msg = _("%s: compiled for a big endian system and target is little endian"); | |
1686 | else | |
1687 | msg = _("%s: compiled for a little endian system and target is big endian"); | |
1688 | ||
8f615d07 | 1689 | (*_bfd_error_handler) (msg, bfd_archive_filename (ibfd)); |
5bd4f169 AM |
1690 | |
1691 | bfd_set_error (bfd_error_wrong_format); | |
1692 | return false; | |
1693 | } | |
1694 | ||
1695 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour | |
1696 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
1697 | return true; | |
1698 | ||
1699 | new_flags = elf_elfheader (ibfd)->e_flags; | |
1700 | old_flags = elf_elfheader (obfd)->e_flags; | |
1701 | if (!elf_flags_init (obfd)) | |
1702 | { | |
1703 | /* First call, no flags set. */ | |
1704 | elf_flags_init (obfd) = true; | |
1705 | elf_elfheader (obfd)->e_flags = new_flags; | |
1706 | } | |
1707 | ||
1708 | else if (new_flags == old_flags) | |
1709 | /* Compatible flags are ok. */ | |
1710 | ; | |
1711 | ||
1712 | else | |
1713 | { | |
1714 | /* Incompatible flags. Warn about -mrelocatable mismatch. | |
1715 | Allow -mrelocatable-lib to be linked with either. */ | |
1716 | error = false; | |
1717 | if ((new_flags & EF_PPC_RELOCATABLE) != 0 | |
1718 | && (old_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0) | |
1719 | { | |
1720 | error = true; | |
1721 | (*_bfd_error_handler) | |
1722 | (_("%s: compiled with -mrelocatable and linked with modules compiled normally"), | |
8f615d07 | 1723 | bfd_archive_filename (ibfd)); |
5bd4f169 AM |
1724 | } |
1725 | else if ((new_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0 | |
1726 | && (old_flags & EF_PPC_RELOCATABLE) != 0) | |
1727 | { | |
1728 | error = true; | |
1729 | (*_bfd_error_handler) | |
1730 | (_("%s: compiled normally and linked with modules compiled with -mrelocatable"), | |
8f615d07 | 1731 | bfd_archive_filename (ibfd)); |
5bd4f169 AM |
1732 | } |
1733 | ||
1734 | /* The output is -mrelocatable-lib iff both the input files are. */ | |
1735 | if (! (new_flags & EF_PPC_RELOCATABLE_LIB)) | |
1736 | elf_elfheader (obfd)->e_flags &= ~EF_PPC_RELOCATABLE_LIB; | |
1737 | ||
1738 | /* The output is -mrelocatable iff it can't be -mrelocatable-lib, | |
1739 | but each input file is either -mrelocatable or -mrelocatable-lib. */ | |
1740 | if (! (elf_elfheader (obfd)->e_flags & EF_PPC_RELOCATABLE_LIB) | |
1741 | && (new_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE)) | |
1742 | && (old_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE))) | |
1743 | elf_elfheader (obfd)->e_flags |= EF_PPC_RELOCATABLE; | |
1744 | ||
1745 | /* Do not warn about eabi vs. V.4 mismatch, just or in the bit | |
1746 | if any module uses it. */ | |
1747 | elf_elfheader (obfd)->e_flags |= (new_flags & EF_PPC_EMB); | |
1748 | ||
1749 | new_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB); | |
1750 | old_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB); | |
1751 | ||
1752 | /* Warn about any other mismatches. */ | |
1753 | if (new_flags != old_flags) | |
1754 | { | |
1755 | error = true; | |
1756 | (*_bfd_error_handler) | |
1757 | (_("%s: uses different e_flags (0x%lx) fields than previous modules (0x%lx)"), | |
8f615d07 | 1758 | bfd_archive_filename (ibfd), (long) new_flags, (long) old_flags); |
5bd4f169 AM |
1759 | } |
1760 | ||
1761 | if (error) | |
1762 | { | |
1763 | bfd_set_error (bfd_error_bad_value); | |
1764 | return false; | |
1765 | } | |
1766 | } | |
1767 | ||
1768 | return true; | |
1769 | } | |
1770 | ||
1771 | /* Handle a PowerPC specific section when reading an object file. This | |
1772 | is called when elfcode.h finds a section with an unknown type. */ | |
1773 | ||
1774 | static boolean | |
1775 | ppc64_elf_section_from_shdr (abfd, hdr, name) | |
1776 | bfd *abfd; | |
1777 | Elf64_Internal_Shdr *hdr; | |
90937f86 | 1778 | const char *name; |
5bd4f169 AM |
1779 | { |
1780 | asection *newsect; | |
1781 | flagword flags; | |
1782 | ||
1783 | if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name)) | |
1784 | return false; | |
1785 | ||
1786 | newsect = hdr->bfd_section; | |
1787 | flags = bfd_get_section_flags (abfd, newsect); | |
1788 | if (hdr->sh_flags & SHF_EXCLUDE) | |
1789 | flags |= SEC_EXCLUDE; | |
1790 | ||
1791 | if (hdr->sh_type == SHT_ORDERED) | |
1792 | flags |= SEC_SORT_ENTRIES; | |
1793 | ||
1794 | bfd_set_section_flags (abfd, newsect, flags); | |
1795 | return true; | |
1796 | } | |
1797 | \f | |
65f38f15 AM |
1798 | /* The following functions are specific to the ELF linker, while |
1799 | functions above are used generally. Those named ppc64_elf_* are | |
1800 | called by the main ELF linker code. They appear in this file more | |
1801 | or less in the order in which they are called. eg. | |
1802 | ppc64_elf_check_relocs is called early in the link process, | |
1803 | ppc64_elf_finish_dynamic_sections is one of the last functions | |
e86ce104 AM |
1804 | called. |
1805 | ||
1806 | PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that | |
1807 | functions have both a function code symbol and a function descriptor | |
1808 | symbol. A call to foo in a relocatable object file looks like: | |
1809 | ||
1810 | . .text | |
1811 | . x: | |
1812 | . bl .foo | |
1813 | . nop | |
1814 | ||
1815 | The function definition in another object file might be: | |
1816 | ||
1817 | . .section .opd | |
1818 | . foo: .quad .foo | |
1819 | . .quad .TOC.@tocbase | |
1820 | . .quad 0 | |
1821 | . | |
1822 | . .text | |
1823 | . .foo: blr | |
1824 | ||
1825 | When the linker resolves the call during a static link, the branch | |
1826 | unsurprisingly just goes to .foo and the .opd information is unused. | |
1827 | If the function definition is in a shared library, things are a little | |
1828 | different: The call goes via a plt call stub, the opd information gets | |
1829 | copied to the plt, and the linker patches the nop. | |
1830 | ||
1831 | . x: | |
1832 | . bl .foo_stub | |
1833 | . ld 2,40(1) | |
1834 | . | |
1835 | . | |
1836 | . .foo_stub: | |
1837 | . addis 12,2,Lfoo@toc@ha # in practice, the call stub | |
1838 | . addi 12,12,Lfoo@toc@l # is slightly optimised, but | |
1839 | . std 2,40(1) # this is the general idea | |
1840 | . ld 11,0(12) | |
1841 | . ld 2,8(12) | |
1842 | . mtctr 11 | |
1843 | . ld 11,16(12) | |
1844 | . bctr | |
1845 | . | |
1846 | . .section .plt | |
1847 | . Lfoo: reloc (R_PPC64_JMP_SLOT, foo) | |
1848 | ||
1849 | The "reloc ()" notation is supposed to indicate that the linker emits | |
1850 | an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd | |
1851 | copying. | |
1852 | ||
1853 | What are the difficulties here? Well, firstly, the relocations | |
1854 | examined by the linker in check_relocs are against the function code | |
1855 | sym .foo, while the dynamic relocation in the plt is emitted against | |
1856 | the function descriptor symbol, foo. Somewhere along the line, we need | |
1857 | to carefully copy dynamic link information from one symbol to the other. | |
1858 | Secondly, the generic part of the elf linker will make .foo a dynamic | |
1859 | symbol as is normal for most other backends. We need foo dynamic | |
1860 | instead, at least for an application final link. However, when | |
1861 | creating a shared library containing foo, we need to have both symbols | |
1862 | dynamic so that references to .foo are satisfied during the early | |
1863 | stages of linking. Otherwise the linker might decide to pull in a | |
41bd81ab | 1864 | definition from some other object, eg. a static library. */ |
65f38f15 AM |
1865 | |
1866 | /* The linker needs to keep track of the number of relocs that it | |
1867 | decides to copy as dynamic relocs in check_relocs for each symbol. | |
1868 | This is so that it can later discard them if they are found to be | |
1869 | unnecessary. We store the information in a field extending the | |
1870 | regular ELF linker hash table. */ | |
1871 | ||
1872 | struct ppc_dyn_relocs | |
1873 | { | |
1874 | struct ppc_dyn_relocs *next; | |
1875 | ||
1876 | /* The input section of the reloc. */ | |
1877 | asection *sec; | |
1878 | ||
1879 | /* Total number of relocs copied for the input section. */ | |
1880 | bfd_size_type count; | |
1881 | ||
1882 | /* Number of pc-relative relocs copied for the input section. */ | |
1883 | bfd_size_type pc_count; | |
1884 | }; | |
1885 | ||
1886 | /* Of those relocs that might be copied as dynamic relocs, this macro | |
1887 | selects between relative and absolute types. */ | |
1888 | ||
1889 | #define IS_ABSOLUTE_RELOC(RTYPE) \ | |
805fc799 AM |
1890 | ((RTYPE) != R_PPC64_REL32 \ |
1891 | && (RTYPE) != R_PPC64_REL64 \ | |
1892 | && (RTYPE) != R_PPC64_ADDR30) | |
65f38f15 | 1893 | |
721956f4 AM |
1894 | /* Section name for stubs is the associated section name plus this |
1895 | string. */ | |
1896 | #define STUB_SUFFIX ".stub" | |
1897 | ||
1898 | /* Linker stubs. | |
1899 | ppc_stub_long_branch: | |
1900 | Used when a 14 bit branch (or even a 24 bit branch) can't reach its | |
1901 | destination, but a 24 bit branch in a stub section will reach. | |
1902 | . b dest | |
1903 | ||
1904 | ppc_stub_plt_branch: | |
1905 | Similar to the above, but a 24 bit branch in the stub section won't | |
1906 | reach its destination. | |
1907 | . addis %r12,%r2,xxx@ha | |
1908 | . ld %r11,xxx@l(%r12) | |
1909 | . mtctr %r11 | |
1910 | . bctr | |
1911 | ||
1912 | ppc_stub_plt_call: | |
1913 | Used to call a function in a shared library. | |
1914 | . addis %r12,%r2,xxx@ha | |
1915 | . std %r2,40(%r1) | |
1916 | . ld %r11,xxx+0@l(%r12) | |
1917 | . ld %r2,xxx+8@l(%r12) | |
1918 | . mtctr %r11 | |
1919 | . ld %r11,xxx+16@l(%r12) | |
1920 | . bctr | |
1921 | */ | |
1922 | ||
1923 | enum ppc_stub_type { | |
1924 | ppc_stub_none, | |
1925 | ppc_stub_long_branch, | |
1926 | ppc_stub_plt_branch, | |
1927 | ppc_stub_plt_call | |
1928 | }; | |
1929 | ||
1930 | struct ppc_stub_hash_entry { | |
1931 | ||
1932 | /* Base hash table entry structure. */ | |
1933 | struct bfd_hash_entry root; | |
1934 | ||
1935 | /* The stub section. */ | |
1936 | asection *stub_sec; | |
1937 | ||
1938 | /* Offset within stub_sec of the beginning of this stub. */ | |
1939 | bfd_vma stub_offset; | |
1940 | ||
1941 | /* Given the symbol's value and its section we can determine its final | |
1942 | value when building the stubs (so the stub knows where to jump. */ | |
1943 | bfd_vma target_value; | |
1944 | asection *target_section; | |
1945 | ||
1946 | enum ppc_stub_type stub_type; | |
1947 | ||
1948 | /* The symbol table entry, if any, that this was derived from. */ | |
1949 | struct ppc_link_hash_entry *h; | |
1950 | ||
1951 | /* Where this stub is being called from, or, in the case of combined | |
1952 | stub sections, the first input section in the group. */ | |
1953 | asection *id_sec; | |
1954 | }; | |
1955 | ||
1956 | struct ppc_branch_hash_entry { | |
1957 | ||
1958 | /* Base hash table entry structure. */ | |
1959 | struct bfd_hash_entry root; | |
1960 | ||
1961 | /* Offset within .branch_lt. */ | |
1962 | unsigned int offset; | |
1963 | ||
1964 | /* Generation marker. */ | |
1965 | unsigned int iter; | |
1966 | }; | |
65f38f15 AM |
1967 | |
1968 | struct ppc_link_hash_entry | |
1969 | { | |
1970 | struct elf_link_hash_entry elf; | |
1971 | ||
721956f4 AM |
1972 | /* A pointer to the most recently used stub hash entry against this |
1973 | symbol. */ | |
1974 | struct ppc_stub_hash_entry *stub_cache; | |
1975 | ||
65f38f15 AM |
1976 | /* Track dynamic relocs copied for this symbol. */ |
1977 | struct ppc_dyn_relocs *dyn_relocs; | |
e86ce104 | 1978 | |
721956f4 AM |
1979 | /* Link between function code and descriptor symbols. */ |
1980 | struct elf_link_hash_entry *oh; | |
1981 | ||
e86ce104 AM |
1982 | /* Flag function code and descriptor symbols. */ |
1983 | unsigned int is_func:1; | |
1984 | unsigned int is_func_descriptor:1; | |
65f38f15 AM |
1985 | }; |
1986 | ||
1987 | /* ppc64 ELF linker hash table. */ | |
1988 | ||
1989 | struct ppc_link_hash_table | |
1990 | { | |
1991 | struct elf_link_hash_table elf; | |
1992 | ||
721956f4 AM |
1993 | /* The stub hash table. */ |
1994 | struct bfd_hash_table stub_hash_table; | |
1995 | ||
1996 | /* Another hash table for plt_branch stubs. */ | |
1997 | struct bfd_hash_table branch_hash_table; | |
1998 | ||
1999 | /* Linker stub bfd. */ | |
2000 | bfd *stub_bfd; | |
2001 | ||
2002 | /* Linker call-backs. */ | |
2003 | asection * (*add_stub_section) PARAMS ((const char *, asection *)); | |
2004 | void (*layout_sections_again) PARAMS ((void)); | |
2005 | ||
2006 | /* Array to keep track of which stub sections have been created, and | |
2007 | information on stub grouping. */ | |
2008 | struct map_stub { | |
2009 | /* This is the section to which stubs in the group will be attached. */ | |
2010 | asection *link_sec; | |
2011 | /* The stub section. */ | |
2012 | asection *stub_sec; | |
2013 | } *stub_group; | |
2014 | ||
2015 | /* Assorted information used by ppc64_elf_size_stubs. */ | |
2016 | unsigned int bfd_count; | |
2017 | int top_index; | |
2018 | asection **input_list; | |
2019 | Elf_Internal_Sym **all_local_syms; | |
2020 | ||
65f38f15 AM |
2021 | /* Short-cuts to get to dynamic linker sections. */ |
2022 | asection *sgot; | |
2023 | asection *srelgot; | |
2024 | asection *splt; | |
2025 | asection *srelplt; | |
2026 | asection *sdynbss; | |
2027 | asection *srelbss; | |
2028 | asection *sglink; | |
82bd7b59 | 2029 | asection *sfpr; |
721956f4 AM |
2030 | asection *sbrlt; |
2031 | asection *srelbrlt; | |
ec338859 | 2032 | |
5d1634d7 | 2033 | /* Set on error. */ |
721956f4 AM |
2034 | unsigned int stub_error; |
2035 | ||
2036 | /* Flag set when small branches are detected. Used to | |
2037 | select suitable defaults for the stub group size. */ | |
2038 | unsigned int has_14bit_branch; | |
2039 | ||
805fc799 AM |
2040 | /* Set if we detect a reference undefined weak symbol. */ |
2041 | unsigned int have_undefweak; | |
2042 | ||
721956f4 AM |
2043 | /* Incremented every time we size stubs. */ |
2044 | unsigned int stub_iteration; | |
5d1634d7 | 2045 | |
ec338859 AM |
2046 | /* Small local sym to section mapping cache. */ |
2047 | struct sym_sec_cache sym_sec; | |
65f38f15 AM |
2048 | }; |
2049 | ||
721956f4 AM |
2050 | static struct bfd_hash_entry *stub_hash_newfunc |
2051 | PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *)); | |
2052 | static struct bfd_hash_entry *branch_hash_newfunc | |
2053 | PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *)); | |
2054 | static struct bfd_hash_entry *link_hash_newfunc | |
2055 | PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *)); | |
2056 | static struct bfd_link_hash_table *ppc64_elf_link_hash_table_create | |
2057 | PARAMS ((bfd *)); | |
2058 | static void ppc64_elf_link_hash_table_free | |
2059 | PARAMS ((struct bfd_link_hash_table *)); | |
2060 | static char *ppc_stub_name | |
2061 | PARAMS ((const asection *, const asection *, | |
2062 | const struct ppc_link_hash_entry *, const Elf_Internal_Rela *)); | |
2063 | static struct ppc_stub_hash_entry *ppc_get_stub_entry | |
2064 | PARAMS ((const asection *, const asection *, struct elf_link_hash_entry *, | |
2065 | const Elf_Internal_Rela *, struct ppc_link_hash_table *)); | |
2066 | static struct ppc_stub_hash_entry *ppc_add_stub | |
2067 | PARAMS ((const char *, asection *, struct ppc_link_hash_table *)); | |
2068 | static boolean create_linkage_sections | |
2069 | PARAMS ((bfd *, struct bfd_link_info *)); | |
2070 | static boolean create_got_section | |
2071 | PARAMS ((bfd *, struct bfd_link_info *)); | |
2072 | static boolean ppc64_elf_create_dynamic_sections | |
2073 | PARAMS ((bfd *, struct bfd_link_info *)); | |
2074 | static void ppc64_elf_copy_indirect_symbol | |
2075 | PARAMS ((struct elf_link_hash_entry *, struct elf_link_hash_entry *)); | |
2076 | static boolean ppc64_elf_check_relocs | |
2077 | PARAMS ((bfd *, struct bfd_link_info *, asection *, | |
2078 | const Elf_Internal_Rela *)); | |
2079 | static asection * ppc64_elf_gc_mark_hook | |
2080 | PARAMS ((bfd *abfd, struct bfd_link_info *info, Elf_Internal_Rela *rel, | |
2081 | struct elf_link_hash_entry *h, Elf_Internal_Sym *sym)); | |
2082 | static boolean ppc64_elf_gc_sweep_hook | |
2083 | PARAMS ((bfd *abfd, struct bfd_link_info *info, asection *sec, | |
2084 | const Elf_Internal_Rela *relocs)); | |
2085 | static boolean func_desc_adjust | |
2086 | PARAMS ((struct elf_link_hash_entry *, PTR)); | |
2087 | static boolean ppc64_elf_func_desc_adjust | |
2088 | PARAMS ((bfd *, struct bfd_link_info *)); | |
2089 | static boolean ppc64_elf_adjust_dynamic_symbol | |
2090 | PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *)); | |
2091 | static void ppc64_elf_hide_symbol | |
2092 | PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *, boolean)); | |
2093 | static boolean allocate_dynrelocs | |
2094 | PARAMS ((struct elf_link_hash_entry *, PTR)); | |
2095 | static boolean readonly_dynrelocs | |
2096 | PARAMS ((struct elf_link_hash_entry *, PTR)); | |
2097 | static enum elf_reloc_type_class ppc64_elf_reloc_type_class | |
2098 | PARAMS ((const Elf_Internal_Rela *)); | |
2099 | static boolean ppc64_elf_size_dynamic_sections | |
2100 | PARAMS ((bfd *, struct bfd_link_info *)); | |
2101 | static INLINE enum ppc_stub_type ppc_type_of_stub | |
2102 | PARAMS ((asection *, const Elf_Internal_Rela *, | |
2103 | struct ppc_link_hash_entry **, bfd_vma)); | |
2104 | static bfd_byte *build_plt_stub | |
2105 | PARAMS ((bfd *, bfd_byte *, int, int)); | |
2106 | static boolean ppc_build_one_stub | |
2107 | PARAMS ((struct bfd_hash_entry *, PTR)); | |
2108 | static boolean ppc_size_one_stub | |
2109 | PARAMS ((struct bfd_hash_entry *, PTR)); | |
2110 | static void group_sections | |
2111 | PARAMS ((struct ppc_link_hash_table *, bfd_size_type, boolean)); | |
2112 | static boolean get_local_syms | |
2113 | PARAMS ((bfd *, struct ppc_link_hash_table *)); | |
2114 | static boolean ppc64_elf_fake_sections | |
2115 | PARAMS ((bfd *, Elf64_Internal_Shdr *, asection *)); | |
2116 | static boolean ppc64_elf_relocate_section | |
2117 | PARAMS ((bfd *, struct bfd_link_info *info, bfd *, asection *, bfd_byte *, | |
2118 | Elf_Internal_Rela *relocs, Elf_Internal_Sym *local_syms, | |
2119 | asection **)); | |
2120 | static boolean ppc64_elf_finish_dynamic_symbol | |
2121 | PARAMS ((bfd *, struct bfd_link_info *, struct elf_link_hash_entry *, | |
2122 | Elf_Internal_Sym *)); | |
2123 | static boolean ppc64_elf_finish_dynamic_sections | |
2124 | PARAMS ((bfd *, struct bfd_link_info *)); | |
2125 | ||
65f38f15 AM |
2126 | /* Get the ppc64 ELF linker hash table from a link_info structure. */ |
2127 | ||
2128 | #define ppc_hash_table(p) \ | |
2129 | ((struct ppc_link_hash_table *) ((p)->hash)) | |
2130 | ||
721956f4 AM |
2131 | #define ppc_stub_hash_lookup(table, string, create, copy) \ |
2132 | ((struct ppc_stub_hash_entry *) \ | |
2133 | bfd_hash_lookup ((table), (string), (create), (copy))) | |
2134 | ||
2135 | #define ppc_branch_hash_lookup(table, string, create, copy) \ | |
2136 | ((struct ppc_branch_hash_entry *) \ | |
2137 | bfd_hash_lookup ((table), (string), (create), (copy))) | |
2138 | ||
2139 | /* Create an entry in the stub hash table. */ | |
2140 | ||
2141 | static struct bfd_hash_entry * | |
2142 | stub_hash_newfunc (entry, table, string) | |
2143 | struct bfd_hash_entry *entry; | |
2144 | struct bfd_hash_table *table; | |
2145 | const char *string; | |
2146 | { | |
2147 | /* Allocate the structure if it has not already been allocated by a | |
2148 | subclass. */ | |
2149 | if (entry == NULL) | |
2150 | { | |
2151 | entry = bfd_hash_allocate (table, sizeof (struct ppc_stub_hash_entry)); | |
2152 | if (entry == NULL) | |
2153 | return entry; | |
2154 | } | |
2155 | ||
2156 | /* Call the allocation method of the superclass. */ | |
2157 | entry = bfd_hash_newfunc (entry, table, string); | |
2158 | if (entry != NULL) | |
2159 | { | |
2160 | struct ppc_stub_hash_entry *eh; | |
2161 | ||
2162 | /* Initialize the local fields. */ | |
2163 | eh = (struct ppc_stub_hash_entry *) entry; | |
2164 | eh->stub_sec = NULL; | |
2165 | eh->stub_offset = 0; | |
2166 | eh->target_value = 0; | |
2167 | eh->target_section = NULL; | |
2168 | eh->stub_type = ppc_stub_none; | |
2169 | eh->h = NULL; | |
2170 | eh->id_sec = NULL; | |
2171 | } | |
2172 | ||
2173 | return entry; | |
2174 | } | |
2175 | ||
2176 | /* Create an entry in the branch hash table. */ | |
2177 | ||
2178 | static struct bfd_hash_entry * | |
2179 | branch_hash_newfunc (entry, table, string) | |
2180 | struct bfd_hash_entry *entry; | |
2181 | struct bfd_hash_table *table; | |
2182 | const char *string; | |
2183 | { | |
2184 | /* Allocate the structure if it has not already been allocated by a | |
2185 | subclass. */ | |
2186 | if (entry == NULL) | |
2187 | { | |
2188 | entry = bfd_hash_allocate (table, sizeof (struct ppc_branch_hash_entry)); | |
2189 | if (entry == NULL) | |
2190 | return entry; | |
2191 | } | |
2192 | ||
2193 | /* Call the allocation method of the superclass. */ | |
2194 | entry = bfd_hash_newfunc (entry, table, string); | |
2195 | if (entry != NULL) | |
2196 | { | |
2197 | struct ppc_branch_hash_entry *eh; | |
2198 | ||
2199 | /* Initialize the local fields. */ | |
2200 | eh = (struct ppc_branch_hash_entry *) entry; | |
2201 | eh->offset = 0; | |
2202 | eh->iter = 0; | |
2203 | } | |
2204 | ||
2205 | return entry; | |
2206 | } | |
2207 | ||
65f38f15 AM |
2208 | /* Create an entry in a ppc64 ELF linker hash table. */ |
2209 | ||
2210 | static struct bfd_hash_entry * | |
2211 | link_hash_newfunc (entry, table, string) | |
2212 | struct bfd_hash_entry *entry; | |
2213 | struct bfd_hash_table *table; | |
2214 | const char *string; | |
2215 | { | |
2216 | /* Allocate the structure if it has not already been allocated by a | |
2217 | subclass. */ | |
2218 | if (entry == NULL) | |
2219 | { | |
2220 | entry = bfd_hash_allocate (table, sizeof (struct ppc_link_hash_entry)); | |
2221 | if (entry == NULL) | |
2222 | return entry; | |
2223 | } | |
2224 | ||
2225 | /* Call the allocation method of the superclass. */ | |
2226 | entry = _bfd_elf_link_hash_newfunc (entry, table, string); | |
2227 | if (entry != NULL) | |
2228 | { | |
2229 | struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) entry; | |
2230 | ||
721956f4 | 2231 | eh->stub_cache = NULL; |
65f38f15 | 2232 | eh->dyn_relocs = NULL; |
721956f4 | 2233 | eh->oh = NULL; |
e86ce104 AM |
2234 | eh->is_func = 0; |
2235 | eh->is_func_descriptor = 0; | |
65f38f15 AM |
2236 | } |
2237 | ||
2238 | return entry; | |
2239 | } | |
2240 | ||
2241 | /* Create a ppc64 ELF linker hash table. */ | |
2242 | ||
2243 | static struct bfd_link_hash_table * | |
2244 | ppc64_elf_link_hash_table_create (abfd) | |
2245 | bfd *abfd; | |
2246 | { | |
2247 | struct ppc_link_hash_table *htab; | |
2248 | bfd_size_type amt = sizeof (struct ppc_link_hash_table); | |
2249 | ||
e2d34d7d | 2250 | htab = (struct ppc_link_hash_table *) bfd_malloc (amt); |
65f38f15 AM |
2251 | if (htab == NULL) |
2252 | return NULL; | |
2253 | ||
2254 | if (! _bfd_elf_link_hash_table_init (&htab->elf, abfd, link_hash_newfunc)) | |
2255 | { | |
e2d34d7d | 2256 | free (htab); |
65f38f15 AM |
2257 | return NULL; |
2258 | } | |
2259 | ||
721956f4 AM |
2260 | /* Init the stub hash table too. */ |
2261 | if (!bfd_hash_table_init (&htab->stub_hash_table, stub_hash_newfunc)) | |
2262 | return NULL; | |
2263 | ||
2264 | /* And the branch hash table. */ | |
2265 | if (!bfd_hash_table_init (&htab->branch_hash_table, branch_hash_newfunc)) | |
2266 | return NULL; | |
2267 | ||
2268 | htab->stub_bfd = NULL; | |
2269 | htab->add_stub_section = NULL; | |
2270 | htab->layout_sections_again = NULL; | |
2271 | htab->stub_group = NULL; | |
65f38f15 AM |
2272 | htab->sgot = NULL; |
2273 | htab->srelgot = NULL; | |
2274 | htab->splt = NULL; | |
2275 | htab->srelplt = NULL; | |
2276 | htab->sdynbss = NULL; | |
2277 | htab->srelbss = NULL; | |
2278 | htab->sglink = NULL; | |
82bd7b59 | 2279 | htab->sfpr = NULL; |
721956f4 AM |
2280 | htab->sbrlt = NULL; |
2281 | htab->srelbrlt = NULL; | |
2282 | htab->stub_error = 0; | |
2283 | htab->has_14bit_branch = 0; | |
805fc799 | 2284 | htab->have_undefweak = 0; |
721956f4 | 2285 | htab->stub_iteration = 0; |
ec338859 | 2286 | htab->sym_sec.abfd = NULL; |
65f38f15 AM |
2287 | |
2288 | return &htab->elf.root; | |
2289 | } | |
2290 | ||
721956f4 AM |
2291 | /* Free the derived linker hash table. */ |
2292 | ||
2293 | static void | |
2294 | ppc64_elf_link_hash_table_free (hash) | |
2295 | struct bfd_link_hash_table *hash; | |
2296 | { | |
2297 | struct ppc_link_hash_table *ret = (struct ppc_link_hash_table *) hash; | |
2298 | ||
2299 | bfd_hash_table_free (&ret->stub_hash_table); | |
2300 | bfd_hash_table_free (&ret->branch_hash_table); | |
2301 | _bfd_generic_link_hash_table_free (hash); | |
2302 | } | |
2303 | ||
2304 | /* Build a name for an entry in the stub hash table. */ | |
2305 | ||
2306 | static char * | |
2307 | ppc_stub_name (input_section, sym_sec, h, rel) | |
2308 | const asection *input_section; | |
2309 | const asection *sym_sec; | |
2310 | const struct ppc_link_hash_entry *h; | |
2311 | const Elf_Internal_Rela *rel; | |
2312 | { | |
2313 | char *stub_name; | |
2314 | bfd_size_type len; | |
2315 | ||
2316 | /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31 | |
2317 | offsets from a sym as a branch target? In fact, we could | |
2318 | probably assume the addend is always zero. */ | |
2319 | BFD_ASSERT (((int) rel->r_addend & 0xffffffff) == rel->r_addend); | |
2320 | ||
2321 | if (h) | |
2322 | { | |
2323 | len = 8 + 1 + strlen (h->elf.root.root.string) + 1 + 8 + 1; | |
2324 | stub_name = bfd_malloc (len); | |
2325 | if (stub_name != NULL) | |
2326 | { | |
2327 | sprintf (stub_name, "%08x_%s+%x", | |
2328 | input_section->id & 0xffffffff, | |
2329 | h->elf.root.root.string, | |
2330 | (int) rel->r_addend & 0xffffffff); | |
2331 | } | |
2332 | } | |
2333 | else | |
2334 | { | |
2335 | len = 8 + 1 + 8 + 1 + 8 + 1 + 16 + 1; | |
2336 | stub_name = bfd_malloc (len); | |
2337 | if (stub_name != NULL) | |
2338 | { | |
2339 | sprintf (stub_name, "%08x_%x:%x+%x", | |
2340 | input_section->id & 0xffffffff, | |
2341 | sym_sec->id & 0xffffffff, | |
2342 | (int) ELF64_R_SYM (rel->r_info) & 0xffffffff, | |
2343 | (int) rel->r_addend & 0xffffffff); | |
2344 | } | |
2345 | } | |
2346 | return stub_name; | |
2347 | } | |
2348 | ||
2349 | /* Look up an entry in the stub hash. Stub entries are cached because | |
2350 | creating the stub name takes a bit of time. */ | |
2351 | ||
2352 | static struct ppc_stub_hash_entry * | |
2353 | ppc_get_stub_entry (input_section, sym_sec, hash, rel, htab) | |
2354 | const asection *input_section; | |
2355 | const asection *sym_sec; | |
2356 | struct elf_link_hash_entry *hash; | |
2357 | const Elf_Internal_Rela *rel; | |
2358 | struct ppc_link_hash_table *htab; | |
2359 | { | |
2360 | struct ppc_stub_hash_entry *stub_entry; | |
2361 | struct ppc_link_hash_entry *h = (struct ppc_link_hash_entry *) hash; | |
2362 | const asection *id_sec; | |
2363 | ||
2364 | /* If this input section is part of a group of sections sharing one | |
2365 | stub section, then use the id of the first section in the group. | |
2366 | Stub names need to include a section id, as there may well be | |
2367 | more than one stub used to reach say, printf, and we need to | |
2368 | distinguish between them. */ | |
2369 | id_sec = htab->stub_group[input_section->id].link_sec; | |
2370 | ||
2371 | if (h != NULL && h->stub_cache != NULL | |
2372 | && h->stub_cache->h == h | |
2373 | && h->stub_cache->id_sec == id_sec) | |
2374 | { | |
2375 | stub_entry = h->stub_cache; | |
2376 | } | |
2377 | else | |
2378 | { | |
2379 | char *stub_name; | |
2380 | ||
2381 | stub_name = ppc_stub_name (id_sec, sym_sec, h, rel); | |
2382 | if (stub_name == NULL) | |
2383 | return NULL; | |
2384 | ||
2385 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, | |
2386 | stub_name, false, false); | |
2387 | if (h != NULL) | |
2388 | h->stub_cache = stub_entry; | |
2389 | ||
2390 | free (stub_name); | |
2391 | } | |
2392 | ||
2393 | return stub_entry; | |
2394 | } | |
2395 | ||
2396 | /* Add a new stub entry to the stub hash. Not all fields of the new | |
2397 | stub entry are initialised. */ | |
2398 | ||
2399 | static struct ppc_stub_hash_entry * | |
2400 | ppc_add_stub (stub_name, section, htab) | |
2401 | const char *stub_name; | |
2402 | asection *section; | |
2403 | struct ppc_link_hash_table *htab; | |
2404 | { | |
2405 | asection *link_sec; | |
2406 | asection *stub_sec; | |
2407 | struct ppc_stub_hash_entry *stub_entry; | |
2408 | ||
2409 | link_sec = htab->stub_group[section->id].link_sec; | |
2410 | stub_sec = htab->stub_group[section->id].stub_sec; | |
2411 | if (stub_sec == NULL) | |
2412 | { | |
2413 | stub_sec = htab->stub_group[link_sec->id].stub_sec; | |
2414 | if (stub_sec == NULL) | |
2415 | { | |
2416 | bfd_size_type len; | |
2417 | char *s_name; | |
2418 | ||
2419 | len = strlen (link_sec->name) + sizeof (STUB_SUFFIX); | |
2420 | s_name = bfd_alloc (htab->stub_bfd, len); | |
2421 | if (s_name == NULL) | |
2422 | return NULL; | |
2423 | ||
2424 | strcpy (s_name, link_sec->name); | |
2425 | strcpy (s_name + len - sizeof (STUB_SUFFIX), STUB_SUFFIX); | |
2426 | stub_sec = (*htab->add_stub_section) (s_name, link_sec); | |
2427 | if (stub_sec == NULL) | |
2428 | return NULL; | |
2429 | htab->stub_group[link_sec->id].stub_sec = stub_sec; | |
2430 | } | |
2431 | htab->stub_group[section->id].stub_sec = stub_sec; | |
2432 | } | |
2433 | ||
2434 | /* Enter this entry into the linker stub hash table. */ | |
2435 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, stub_name, | |
2436 | true, false); | |
2437 | if (stub_entry == NULL) | |
2438 | { | |
2439 | (*_bfd_error_handler) (_("%s: cannot create stub entry %s"), | |
2440 | bfd_archive_filename (section->owner), | |
2441 | stub_name); | |
2442 | return NULL; | |
2443 | } | |
2444 | ||
2445 | stub_entry->stub_sec = stub_sec; | |
2446 | stub_entry->stub_offset = 0; | |
2447 | stub_entry->id_sec = link_sec; | |
2448 | return stub_entry; | |
2449 | } | |
2450 | ||
82bd7b59 AM |
2451 | /* Create sections for linker generated code. */ |
2452 | ||
2453 | static boolean | |
2454 | create_linkage_sections (dynobj, info) | |
2455 | bfd *dynobj; | |
2456 | struct bfd_link_info *info; | |
2457 | { | |
2458 | struct ppc_link_hash_table *htab; | |
2459 | flagword flags; | |
2460 | ||
2461 | htab = ppc_hash_table (info); | |
2462 | ||
2463 | /* Create .sfpr for code to save and restore fp regs. */ | |
2464 | flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY | |
2465 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
721956f4 | 2466 | htab->sfpr = bfd_make_section_anyway (dynobj, ".sfpr"); |
82bd7b59 AM |
2467 | if (htab->sfpr == NULL |
2468 | || ! bfd_set_section_flags (dynobj, htab->sfpr, flags) | |
2469 | || ! bfd_set_section_alignment (dynobj, htab->sfpr, 2)) | |
2470 | return false; | |
2471 | ||
721956f4 AM |
2472 | /* Create .glink for lazy dynamic linking support. */ |
2473 | htab->sglink = bfd_make_section_anyway (dynobj, ".glink"); | |
82bd7b59 AM |
2474 | if (htab->sglink == NULL |
2475 | || ! bfd_set_section_flags (dynobj, htab->sglink, flags) | |
2476 | || ! bfd_set_section_alignment (dynobj, htab->sglink, 2)) | |
2477 | return false; | |
2478 | ||
721956f4 AM |
2479 | /* Create .branch_lt for plt_branch stubs. */ |
2480 | flags = (SEC_ALLOC | SEC_LOAD | |
2481 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
2482 | htab->sbrlt = bfd_make_section_anyway (dynobj, ".branch_lt"); | |
2483 | if (htab->sbrlt == NULL | |
2484 | || ! bfd_set_section_flags (dynobj, htab->sbrlt, flags) | |
2485 | || ! bfd_set_section_alignment (dynobj, htab->sbrlt, 3)) | |
2486 | return false; | |
2487 | ||
2488 | if (info->shared) | |
2489 | { | |
2490 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | |
2491 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
2492 | htab->srelbrlt = bfd_make_section (dynobj, ".rela.branch_lt"); | |
2493 | if (!htab->srelbrlt | |
2494 | || ! bfd_set_section_flags (dynobj, htab->srelbrlt, flags) | |
2495 | || ! bfd_set_section_alignment (dynobj, htab->srelbrlt, 3)) | |
2496 | return false; | |
2497 | } | |
82bd7b59 AM |
2498 | return true; |
2499 | } | |
2500 | ||
65f38f15 AM |
2501 | /* Create .got and .rela.got sections in DYNOBJ, and set up |
2502 | shortcuts to them in our hash table. */ | |
2503 | ||
2504 | static boolean | |
2505 | create_got_section (dynobj, info) | |
2506 | bfd *dynobj; | |
2507 | struct bfd_link_info *info; | |
2508 | { | |
2509 | struct ppc_link_hash_table *htab; | |
2510 | ||
2511 | if (! _bfd_elf_create_got_section (dynobj, info)) | |
2512 | return false; | |
2513 | ||
2514 | htab = ppc_hash_table (info); | |
2515 | htab->sgot = bfd_get_section_by_name (dynobj, ".got"); | |
2516 | if (!htab->sgot) | |
2517 | abort (); | |
2518 | ||
2519 | htab->srelgot = bfd_make_section (dynobj, ".rela.got"); | |
2520 | if (!htab->srelgot | |
2521 | || ! bfd_set_section_flags (dynobj, htab->srelgot, | |
2522 | (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | |
2523 | | SEC_IN_MEMORY | SEC_LINKER_CREATED | |
2524 | | SEC_READONLY)) | |
2525 | || ! bfd_set_section_alignment (dynobj, htab->srelgot, 3)) | |
2526 | return false; | |
2527 | return true; | |
2528 | } | |
5bd4f169 | 2529 | |
82bd7b59 | 2530 | /* Create the dynamic sections, and set up shortcuts. */ |
5bd4f169 AM |
2531 | |
2532 | static boolean | |
65f38f15 AM |
2533 | ppc64_elf_create_dynamic_sections (dynobj, info) |
2534 | bfd *dynobj; | |
5bd4f169 AM |
2535 | struct bfd_link_info *info; |
2536 | { | |
65f38f15 | 2537 | struct ppc_link_hash_table *htab; |
5bd4f169 | 2538 | |
65f38f15 AM |
2539 | htab = ppc_hash_table (info); |
2540 | if (!htab->sgot && !create_got_section (dynobj, info)) | |
5bd4f169 AM |
2541 | return false; |
2542 | ||
65f38f15 | 2543 | if (!_bfd_elf_create_dynamic_sections (dynobj, info)) |
5bd4f169 | 2544 | return false; |
65f38f15 AM |
2545 | |
2546 | htab->splt = bfd_get_section_by_name (dynobj, ".plt"); | |
2547 | htab->srelplt = bfd_get_section_by_name (dynobj, ".rela.plt"); | |
2548 | htab->sdynbss = bfd_get_section_by_name (dynobj, ".dynbss"); | |
2549 | if (!info->shared) | |
2550 | htab->srelbss = bfd_get_section_by_name (dynobj, ".rela.bss"); | |
2551 | ||
2552 | if (!htab->splt || !htab->srelplt || !htab->sdynbss | |
2553 | || (!info->shared && !htab->srelbss)) | |
2554 | abort (); | |
2555 | ||
5bd4f169 AM |
2556 | return true; |
2557 | } | |
2558 | ||
65f38f15 AM |
2559 | /* Copy the extra info we tack onto an elf_link_hash_entry. */ |
2560 | ||
2561 | static void | |
2562 | ppc64_elf_copy_indirect_symbol (dir, ind) | |
2563 | struct elf_link_hash_entry *dir, *ind; | |
2564 | { | |
2565 | struct ppc_link_hash_entry *edir, *eind; | |
2566 | ||
2567 | edir = (struct ppc_link_hash_entry *) dir; | |
2568 | eind = (struct ppc_link_hash_entry *) ind; | |
2569 | ||
bbd7ec4a | 2570 | if (eind->dyn_relocs != NULL) |
65f38f15 | 2571 | { |
bbd7ec4a AM |
2572 | if (edir->dyn_relocs != NULL) |
2573 | { | |
2574 | struct ppc_dyn_relocs **pp; | |
2575 | struct ppc_dyn_relocs *p; | |
2576 | ||
1e370bd2 | 2577 | if (ind->root.type == bfd_link_hash_indirect) |
bbd7ec4a AM |
2578 | abort (); |
2579 | ||
2580 | /* Add reloc counts against the weak sym to the strong sym | |
2581 | list. Merge any entries against the same section. */ | |
2582 | for (pp = &eind->dyn_relocs; (p = *pp) != NULL; ) | |
2583 | { | |
2584 | struct ppc_dyn_relocs *q; | |
2585 | ||
2586 | for (q = edir->dyn_relocs; q != NULL; q = q->next) | |
2587 | if (q->sec == p->sec) | |
2588 | { | |
2589 | q->pc_count += p->pc_count; | |
2590 | q->count += p->count; | |
2591 | *pp = p->next; | |
2592 | break; | |
2593 | } | |
2594 | if (q == NULL) | |
2595 | pp = &p->next; | |
2596 | } | |
2597 | *pp = edir->dyn_relocs; | |
2598 | } | |
2599 | ||
65f38f15 AM |
2600 | edir->dyn_relocs = eind->dyn_relocs; |
2601 | eind->dyn_relocs = NULL; | |
2602 | } | |
65f38f15 | 2603 | |
d1329ca3 AM |
2604 | edir->is_func |= eind->is_func; |
2605 | edir->is_func_descriptor |= eind->is_func_descriptor; | |
e86ce104 | 2606 | |
65f38f15 AM |
2607 | _bfd_elf_link_hash_copy_indirect (dir, ind); |
2608 | } | |
2609 | ||
5bd4f169 | 2610 | /* Look through the relocs for a section during the first phase, and |
65f38f15 | 2611 | calculate needed space in the global offset table, procedure |
5d1634d7 | 2612 | linkage table, and dynamic reloc sections. */ |
5bd4f169 AM |
2613 | |
2614 | static boolean | |
2615 | ppc64_elf_check_relocs (abfd, info, sec, relocs) | |
2616 | bfd *abfd; | |
2617 | struct bfd_link_info *info; | |
2618 | asection *sec; | |
2619 | const Elf_Internal_Rela *relocs; | |
2620 | { | |
65f38f15 | 2621 | struct ppc_link_hash_table *htab; |
5bd4f169 AM |
2622 | Elf_Internal_Shdr *symtab_hdr; |
2623 | struct elf_link_hash_entry **sym_hashes, **sym_hashes_end; | |
2624 | const Elf_Internal_Rela *rel; | |
2625 | const Elf_Internal_Rela *rel_end; | |
5bd4f169 | 2626 | asection *sreloc; |
e86ce104 | 2627 | boolean is_opd; |
5bd4f169 AM |
2628 | |
2629 | if (info->relocateable) | |
2630 | return true; | |
2631 | ||
65f38f15 | 2632 | htab = ppc_hash_table (info); |
5bd4f169 | 2633 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
5bd4f169 AM |
2634 | |
2635 | sym_hashes = elf_sym_hashes (abfd); | |
2636 | sym_hashes_end = (sym_hashes | |
2637 | + symtab_hdr->sh_size / sizeof (Elf64_External_Sym)); | |
2638 | if (!elf_bad_symtab (abfd)) | |
2639 | sym_hashes_end -= symtab_hdr->sh_info; | |
2640 | ||
2641 | sreloc = NULL; | |
e86ce104 | 2642 | is_opd = strcmp (bfd_get_section_name (abfd, sec), ".opd") == 0; |
5bd4f169 | 2643 | |
82bd7b59 AM |
2644 | if (htab->elf.dynobj == NULL) |
2645 | htab->elf.dynobj = abfd; | |
2646 | if (htab->sfpr == NULL | |
2647 | && !create_linkage_sections (htab->elf.dynobj, info)) | |
2648 | return false; | |
2649 | ||
5bd4f169 AM |
2650 | rel_end = relocs + sec->reloc_count; |
2651 | for (rel = relocs; rel < rel_end; rel++) | |
2652 | { | |
2653 | unsigned long r_symndx; | |
2654 | struct elf_link_hash_entry *h; | |
a33d1f77 | 2655 | enum elf_ppc_reloc_type r_type; |
5bd4f169 AM |
2656 | |
2657 | r_symndx = ELF64_R_SYM (rel->r_info); | |
2658 | if (r_symndx < symtab_hdr->sh_info) | |
2659 | h = NULL; | |
2660 | else | |
2661 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
2662 | ||
a33d1f77 AM |
2663 | r_type = (enum elf_ppc_reloc_type) ELF64_R_TYPE (rel->r_info); |
2664 | switch (r_type) | |
5bd4f169 AM |
2665 | { |
2666 | /* GOT16 relocations */ | |
2667 | case R_PPC64_GOT16: | |
5bd4f169 | 2668 | case R_PPC64_GOT16_DS: |
65f38f15 AM |
2669 | case R_PPC64_GOT16_HA: |
2670 | case R_PPC64_GOT16_HI: | |
2671 | case R_PPC64_GOT16_LO: | |
5bd4f169 | 2672 | case R_PPC64_GOT16_LO_DS: |
5bd4f169 | 2673 | |
65f38f15 | 2674 | /* This symbol requires a global offset table entry. */ |
82bd7b59 AM |
2675 | if (htab->sgot == NULL |
2676 | && !create_got_section (htab->elf.dynobj, info)) | |
2677 | return false; | |
5bd4f169 AM |
2678 | |
2679 | if (h != NULL) | |
2680 | { | |
65f38f15 | 2681 | h->got.refcount += 1; |
5bd4f169 AM |
2682 | } |
2683 | else | |
2684 | { | |
65f38f15 AM |
2685 | bfd_signed_vma *local_got_refcounts; |
2686 | ||
5bd4f169 | 2687 | /* This is a global offset table entry for a local symbol. */ |
65f38f15 | 2688 | local_got_refcounts = elf_local_got_refcounts (abfd); |
5bd4f169 AM |
2689 | if (local_got_refcounts == NULL) |
2690 | { | |
dc810e39 | 2691 | bfd_size_type size; |
5bd4f169 | 2692 | |
dc810e39 AM |
2693 | size = symtab_hdr->sh_info; |
2694 | size *= sizeof (bfd_signed_vma); | |
2695 | local_got_refcounts = ((bfd_signed_vma *) | |
65f38f15 | 2696 | bfd_zalloc (abfd, size)); |
5bd4f169 AM |
2697 | if (local_got_refcounts == NULL) |
2698 | return false; | |
2699 | elf_local_got_refcounts (abfd) = local_got_refcounts; | |
5bd4f169 | 2700 | } |
65f38f15 | 2701 | local_got_refcounts[r_symndx] += 1; |
5bd4f169 AM |
2702 | } |
2703 | break; | |
2704 | ||
5bd4f169 | 2705 | case R_PPC64_PLT16_HA: |
65f38f15 AM |
2706 | case R_PPC64_PLT16_HI: |
2707 | case R_PPC64_PLT16_LO: | |
2708 | case R_PPC64_PLT32: | |
2709 | case R_PPC64_PLT64: | |
5bd4f169 AM |
2710 | /* This symbol requires a procedure linkage table entry. We |
2711 | actually build the entry in adjust_dynamic_symbol, | |
2712 | because this might be a case of linking PIC code without | |
2713 | linking in any dynamic objects, in which case we don't | |
2714 | need to generate a procedure linkage table after all. */ | |
5bd4f169 AM |
2715 | if (h == NULL) |
2716 | { | |
2717 | /* It does not make sense to have a procedure linkage | |
2718 | table entry for a local symbol. */ | |
2719 | bfd_set_error (bfd_error_bad_value); | |
2720 | return false; | |
2721 | } | |
2722 | ||
65f38f15 AM |
2723 | h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT; |
2724 | h->plt.refcount += 1; | |
e86ce104 | 2725 | ((struct ppc_link_hash_entry *) h)->is_func = 1; |
5bd4f169 AM |
2726 | break; |
2727 | ||
2728 | /* The following relocations don't need to propagate the | |
2729 | relocation if linking a shared object since they are | |
2730 | section relative. */ | |
2731 | case R_PPC64_SECTOFF: | |
2732 | case R_PPC64_SECTOFF_LO: | |
2733 | case R_PPC64_SECTOFF_HI: | |
2734 | case R_PPC64_SECTOFF_HA: | |
2735 | case R_PPC64_SECTOFF_DS: | |
2736 | case R_PPC64_SECTOFF_LO_DS: | |
2737 | case R_PPC64_TOC16: | |
2738 | case R_PPC64_TOC16_LO: | |
2739 | case R_PPC64_TOC16_HI: | |
2740 | case R_PPC64_TOC16_HA: | |
2741 | case R_PPC64_TOC16_DS: | |
2742 | case R_PPC64_TOC16_LO_DS: | |
2743 | break; | |
2744 | ||
2745 | /* This relocation describes the C++ object vtable hierarchy. | |
2746 | Reconstruct it for later use during GC. */ | |
2747 | case R_PPC64_GNU_VTINHERIT: | |
2748 | if (!_bfd_elf64_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) | |
2749 | return false; | |
2750 | break; | |
2751 | ||
2752 | /* This relocation describes which C++ vtable entries are actually | |
2753 | used. Record for later use during GC. */ | |
2754 | case R_PPC64_GNU_VTENTRY: | |
2755 | if (!_bfd_elf64_gc_record_vtentry (abfd, sec, h, rel->r_addend)) | |
2756 | return false; | |
2757 | break; | |
2758 | ||
721956f4 AM |
2759 | case R_PPC64_REL14: |
2760 | case R_PPC64_REL14_BRTAKEN: | |
2761 | case R_PPC64_REL14_BRNTAKEN: | |
2762 | htab->has_14bit_branch = 1; | |
2763 | /* Fall through. */ | |
2764 | ||
5d1634d7 | 2765 | case R_PPC64_REL24: |
e86ce104 AM |
2766 | if (h != NULL |
2767 | && h->root.root.string[0] == '.' | |
2768 | && h->root.root.string[1] != 0) | |
5d1634d7 AM |
2769 | { |
2770 | /* We may need a .plt entry if the function this reloc | |
2771 | refers to is in a shared lib. */ | |
2772 | h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT; | |
2773 | h->plt.refcount += 1; | |
e86ce104 | 2774 | ((struct ppc_link_hash_entry *) h)->is_func = 1; |
5d1634d7 AM |
2775 | } |
2776 | break; | |
2777 | ||
e86ce104 AM |
2778 | case R_PPC64_ADDR64: |
2779 | if (is_opd | |
2780 | && h != NULL | |
2781 | && h->root.root.string[0] == '.' | |
2782 | && h->root.root.string[1] != 0) | |
2783 | { | |
2784 | struct elf_link_hash_entry *fdh; | |
2785 | ||
2786 | fdh = elf_link_hash_lookup (&htab->elf, h->root.root.string + 1, | |
2787 | false, false, false); | |
2788 | if (fdh != NULL) | |
2789 | { | |
e86ce104 | 2790 | ((struct ppc_link_hash_entry *) fdh)->is_func_descriptor = 1; |
721956f4 | 2791 | ((struct ppc_link_hash_entry *) fdh)->oh = h; |
e86ce104 | 2792 | ((struct ppc_link_hash_entry *) h)->is_func = 1; |
721956f4 | 2793 | ((struct ppc_link_hash_entry *) h)->oh = fdh; |
e86ce104 AM |
2794 | } |
2795 | } | |
2796 | /* Fall through. */ | |
2797 | ||
5bd4f169 AM |
2798 | case R_PPC64_REL64: |
2799 | case R_PPC64_REL32: | |
65f38f15 AM |
2800 | case R_PPC64_ADDR14: |
2801 | case R_PPC64_ADDR14_BRNTAKEN: | |
2802 | case R_PPC64_ADDR14_BRTAKEN: | |
2803 | case R_PPC64_ADDR16: | |
2804 | case R_PPC64_ADDR16_DS: | |
2805 | case R_PPC64_ADDR16_HA: | |
2806 | case R_PPC64_ADDR16_HI: | |
2807 | case R_PPC64_ADDR16_HIGHER: | |
2808 | case R_PPC64_ADDR16_HIGHERA: | |
2809 | case R_PPC64_ADDR16_HIGHEST: | |
2810 | case R_PPC64_ADDR16_HIGHESTA: | |
2811 | case R_PPC64_ADDR16_LO: | |
2812 | case R_PPC64_ADDR16_LO_DS: | |
2813 | case R_PPC64_ADDR24: | |
2814 | case R_PPC64_ADDR30: | |
2815 | case R_PPC64_ADDR32: | |
65f38f15 AM |
2816 | case R_PPC64_UADDR16: |
2817 | case R_PPC64_UADDR32: | |
2818 | case R_PPC64_UADDR64: | |
5bd4f169 | 2819 | case R_PPC64_TOC: |
41bd81ab AM |
2820 | /* Don't propagate .opd relocs. */ |
2821 | if (NO_OPD_RELOCS && is_opd) | |
e86ce104 | 2822 | break; |
e86ce104 | 2823 | |
65f38f15 AM |
2824 | /* If we are creating a shared library, and this is a reloc |
2825 | against a global symbol, or a non PC relative reloc | |
2826 | against a local symbol, then we need to copy the reloc | |
2827 | into the shared library. However, if we are linking with | |
2828 | -Bsymbolic, we do not need to copy a reloc against a | |
2829 | global symbol which is defined in an object we are | |
2830 | including in the link (i.e., DEF_REGULAR is set). At | |
2831 | this point we have not seen all the input files, so it is | |
2832 | possible that DEF_REGULAR is not set now but will be set | |
2833 | later (it is never cleared). In case of a weak definition, | |
2834 | DEF_REGULAR may be cleared later by a strong definition in | |
2835 | a shared library. We account for that possibility below by | |
2836 | storing information in the relocs_copied field of the hash | |
2837 | table entry. A similar situation occurs when creating | |
2838 | shared libraries and symbol visibility changes render the | |
2839 | symbol local. | |
2840 | ||
2841 | If on the other hand, we are creating an executable, we | |
2842 | may need to keep relocations for symbols satisfied by a | |
2843 | dynamic library if we manage to avoid copy relocs for the | |
2844 | symbol. */ | |
2845 | if ((info->shared | |
2846 | && (sec->flags & SEC_ALLOC) != 0 | |
a33d1f77 | 2847 | && (IS_ABSOLUTE_RELOC (r_type) |
65f38f15 AM |
2848 | || (h != NULL |
2849 | && (! info->symbolic | |
2850 | || h->root.type == bfd_link_hash_defweak | |
2851 | || (h->elf_link_hash_flags | |
2852 | & ELF_LINK_HASH_DEF_REGULAR) == 0)))) | |
2853 | || (!info->shared | |
2854 | && (sec->flags & SEC_ALLOC) != 0 | |
2855 | && h != NULL | |
2856 | && (h->root.type == bfd_link_hash_defweak | |
2857 | || (h->elf_link_hash_flags | |
2858 | & ELF_LINK_HASH_DEF_REGULAR) == 0))) | |
5bd4f169 | 2859 | { |
ec338859 AM |
2860 | struct ppc_dyn_relocs *p; |
2861 | struct ppc_dyn_relocs **head; | |
2862 | ||
65f38f15 AM |
2863 | /* We must copy these reloc types into the output file. |
2864 | Create a reloc section in dynobj and make room for | |
2865 | this reloc. */ | |
5bd4f169 AM |
2866 | if (sreloc == NULL) |
2867 | { | |
2868 | const char *name; | |
65f38f15 | 2869 | bfd *dynobj; |
5bd4f169 AM |
2870 | |
2871 | name = (bfd_elf_string_from_elf_section | |
2872 | (abfd, | |
2873 | elf_elfheader (abfd)->e_shstrndx, | |
2874 | elf_section_data (sec)->rel_hdr.sh_name)); | |
2875 | if (name == NULL) | |
2876 | return false; | |
2877 | ||
65f38f15 AM |
2878 | if (strncmp (name, ".rela", 5) != 0 |
2879 | || strcmp (bfd_get_section_name (abfd, sec), | |
2880 | name + 5) != 0) | |
2881 | { | |
2882 | (*_bfd_error_handler) | |
2883 | (_("%s: bad relocation section name `%s\'"), | |
2884 | bfd_archive_filename (abfd), name); | |
5d1634d7 | 2885 | bfd_set_error (bfd_error_bad_value); |
65f38f15 AM |
2886 | } |
2887 | ||
65f38f15 | 2888 | dynobj = htab->elf.dynobj; |
5bd4f169 AM |
2889 | sreloc = bfd_get_section_by_name (dynobj, name); |
2890 | if (sreloc == NULL) | |
2891 | { | |
2892 | flagword flags; | |
2893 | ||
2894 | sreloc = bfd_make_section (dynobj, name); | |
2895 | flags = (SEC_HAS_CONTENTS | SEC_READONLY | |
2896 | | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
2897 | if ((sec->flags & SEC_ALLOC) != 0) | |
2898 | flags |= SEC_ALLOC | SEC_LOAD; | |
2899 | if (sreloc == NULL | |
2900 | || ! bfd_set_section_flags (dynobj, sreloc, flags) | |
65f38f15 | 2901 | || ! bfd_set_section_alignment (dynobj, sreloc, 3)) |
5bd4f169 AM |
2902 | return false; |
2903 | } | |
65f38f15 | 2904 | elf_section_data (sec)->sreloc = sreloc; |
5bd4f169 AM |
2905 | } |
2906 | ||
65f38f15 AM |
2907 | /* If this is a global symbol, we count the number of |
2908 | relocations we need for this symbol. */ | |
2909 | if (h != NULL) | |
2910 | { | |
ec338859 | 2911 | head = &((struct ppc_link_hash_entry *) h)->dyn_relocs; |
65f38f15 AM |
2912 | } |
2913 | else | |
2914 | { | |
ec338859 AM |
2915 | /* Track dynamic relocs needed for local syms too. |
2916 | We really need local syms available to do this | |
2917 | easily. Oh well. */ | |
2918 | ||
2919 | asection *s; | |
2920 | s = bfd_section_from_r_symndx (abfd, &htab->sym_sec, | |
2921 | sec, r_symndx); | |
2922 | if (s == NULL) | |
2923 | return false; | |
2924 | ||
2925 | head = ((struct ppc_dyn_relocs **) | |
2926 | &elf_section_data (s)->local_dynrel); | |
65f38f15 | 2927 | } |
ec338859 AM |
2928 | |
2929 | p = *head; | |
2930 | if (p == NULL || p->sec != sec) | |
2931 | { | |
2932 | p = ((struct ppc_dyn_relocs *) | |
2933 | bfd_alloc (htab->elf.dynobj, | |
2934 | (bfd_size_type) sizeof *p)); | |
2935 | if (p == NULL) | |
2936 | return false; | |
2937 | p->next = *head; | |
2938 | *head = p; | |
2939 | p->sec = sec; | |
2940 | p->count = 0; | |
2941 | p->pc_count = 0; | |
2942 | } | |
2943 | ||
2944 | p->count += 1; | |
2945 | if (!IS_ABSOLUTE_RELOC (r_type)) | |
2946 | p->pc_count += 1; | |
65f38f15 | 2947 | } |
5bd4f169 | 2948 | break; |
65f38f15 AM |
2949 | |
2950 | default: | |
96e0dda4 | 2951 | break; |
5bd4f169 AM |
2952 | } |
2953 | } | |
2954 | ||
2955 | return true; | |
2956 | } | |
2957 | ||
2958 | /* Return the section that should be marked against GC for a given | |
2959 | relocation. */ | |
2960 | ||
2961 | static asection * | |
2962 | ppc64_elf_gc_mark_hook (abfd, info, rel, h, sym) | |
2963 | bfd *abfd; | |
2964 | struct bfd_link_info *info ATTRIBUTE_UNUSED; | |
2965 | Elf_Internal_Rela *rel; | |
2966 | struct elf_link_hash_entry *h; | |
2967 | Elf_Internal_Sym *sym; | |
2968 | { | |
2969 | if (h != NULL) | |
2970 | { | |
a33d1f77 AM |
2971 | enum elf_ppc_reloc_type r_type; |
2972 | ||
2973 | r_type = (enum elf_ppc_reloc_type) ELF64_R_TYPE (rel->r_info); | |
2974 | switch (r_type) | |
5bd4f169 AM |
2975 | { |
2976 | case R_PPC64_GNU_VTINHERIT: | |
2977 | case R_PPC64_GNU_VTENTRY: | |
2978 | break; | |
2979 | ||
2980 | default: | |
2981 | switch (h->root.type) | |
2982 | { | |
2983 | case bfd_link_hash_defined: | |
2984 | case bfd_link_hash_defweak: | |
2985 | return h->root.u.def.section; | |
2986 | ||
2987 | case bfd_link_hash_common: | |
2988 | return h->root.u.c.p->section; | |
2989 | ||
2990 | default: | |
2991 | break; | |
2992 | } | |
2993 | } | |
2994 | } | |
2995 | else | |
2996 | { | |
9ad5cbcf | 2997 | return bfd_section_from_elf_index (abfd, sym->st_shndx); |
5bd4f169 AM |
2998 | } |
2999 | ||
3000 | return NULL; | |
3001 | } | |
3002 | ||
65f38f15 AM |
3003 | /* Update the .got, .plt. and dynamic reloc reference counts for the |
3004 | section being removed. */ | |
5bd4f169 AM |
3005 | |
3006 | static boolean | |
3007 | ppc64_elf_gc_sweep_hook (abfd, info, sec, relocs) | |
3008 | bfd *abfd; | |
3009 | struct bfd_link_info *info ATTRIBUTE_UNUSED; | |
3010 | asection *sec; | |
3011 | const Elf_Internal_Rela *relocs; | |
3012 | { | |
3013 | Elf_Internal_Shdr *symtab_hdr; | |
3014 | struct elf_link_hash_entry **sym_hashes; | |
3015 | bfd_signed_vma *local_got_refcounts; | |
3016 | const Elf_Internal_Rela *rel, *relend; | |
5bd4f169 | 3017 | |
ec338859 AM |
3018 | elf_section_data (sec)->local_dynrel = NULL; |
3019 | ||
5bd4f169 AM |
3020 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
3021 | sym_hashes = elf_sym_hashes (abfd); | |
3022 | local_got_refcounts = elf_local_got_refcounts (abfd); | |
3023 | ||
3024 | relend = relocs + sec->reloc_count; | |
3025 | for (rel = relocs; rel < relend; rel++) | |
a33d1f77 AM |
3026 | { |
3027 | unsigned long r_symndx; | |
3028 | enum elf_ppc_reloc_type r_type; | |
3029 | struct elf_link_hash_entry *h; | |
5bd4f169 | 3030 | |
a33d1f77 AM |
3031 | r_symndx = ELF64_R_SYM (rel->r_info); |
3032 | r_type = (enum elf_ppc_reloc_type) ELF64_R_TYPE (rel->r_info); | |
3033 | switch (r_type) | |
3034 | { | |
3035 | case R_PPC64_GOT16: | |
3036 | case R_PPC64_GOT16_DS: | |
3037 | case R_PPC64_GOT16_HA: | |
3038 | case R_PPC64_GOT16_HI: | |
3039 | case R_PPC64_GOT16_LO: | |
3040 | case R_PPC64_GOT16_LO_DS: | |
3041 | if (r_symndx >= symtab_hdr->sh_info) | |
3042 | { | |
3043 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
3044 | if (h->got.refcount > 0) | |
3045 | h->got.refcount--; | |
3046 | } | |
3047 | else | |
3048 | { | |
3049 | if (local_got_refcounts[r_symndx] > 0) | |
3050 | local_got_refcounts[r_symndx]--; | |
3051 | } | |
3052 | break; | |
65f38f15 | 3053 | |
a33d1f77 AM |
3054 | case R_PPC64_PLT16_HA: |
3055 | case R_PPC64_PLT16_HI: | |
3056 | case R_PPC64_PLT16_LO: | |
3057 | case R_PPC64_PLT32: | |
3058 | case R_PPC64_PLT64: | |
3059 | if (r_symndx >= symtab_hdr->sh_info) | |
3060 | { | |
3061 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
3062 | if (h->plt.refcount > 0) | |
3063 | h->plt.refcount--; | |
3064 | } | |
3065 | break; | |
65f38f15 | 3066 | |
721956f4 AM |
3067 | case R_PPC64_REL14: |
3068 | case R_PPC64_REL14_BRNTAKEN: | |
3069 | case R_PPC64_REL14_BRTAKEN: | |
5d1634d7 AM |
3070 | case R_PPC64_REL24: |
3071 | if (r_symndx >= symtab_hdr->sh_info) | |
3072 | { | |
3073 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
3074 | if (h->plt.refcount > 0) | |
3075 | h->plt.refcount--; | |
3076 | } | |
e86ce104 | 3077 | break; |
5d1634d7 | 3078 | |
a33d1f77 AM |
3079 | case R_PPC64_REL32: |
3080 | case R_PPC64_REL64: | |
3081 | if (r_symndx >= symtab_hdr->sh_info) | |
3082 | { | |
3083 | struct ppc_link_hash_entry *eh; | |
3084 | struct ppc_dyn_relocs **pp; | |
3085 | struct ppc_dyn_relocs *p; | |
65f38f15 | 3086 | |
a33d1f77 AM |
3087 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; |
3088 | eh = (struct ppc_link_hash_entry *) h; | |
65f38f15 | 3089 | |
a33d1f77 AM |
3090 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next) |
3091 | if (p->sec == sec) | |
3092 | { | |
3093 | p->pc_count -= 1; | |
3094 | p->count -= 1; | |
3095 | if (p->count == 0) | |
3096 | *pp = p->next; | |
3097 | break; | |
3098 | } | |
3099 | } | |
3100 | break; | |
65f38f15 | 3101 | |
a33d1f77 AM |
3102 | case R_PPC64_ADDR14: |
3103 | case R_PPC64_ADDR14_BRNTAKEN: | |
3104 | case R_PPC64_ADDR14_BRTAKEN: | |
3105 | case R_PPC64_ADDR16: | |
3106 | case R_PPC64_ADDR16_DS: | |
3107 | case R_PPC64_ADDR16_HA: | |
3108 | case R_PPC64_ADDR16_HI: | |
3109 | case R_PPC64_ADDR16_HIGHER: | |
3110 | case R_PPC64_ADDR16_HIGHERA: | |
3111 | case R_PPC64_ADDR16_HIGHEST: | |
3112 | case R_PPC64_ADDR16_HIGHESTA: | |
3113 | case R_PPC64_ADDR16_LO: | |
3114 | case R_PPC64_ADDR16_LO_DS: | |
3115 | case R_PPC64_ADDR24: | |
3116 | case R_PPC64_ADDR30: | |
3117 | case R_PPC64_ADDR32: | |
3118 | case R_PPC64_ADDR64: | |
3119 | case R_PPC64_UADDR16: | |
3120 | case R_PPC64_UADDR32: | |
3121 | case R_PPC64_UADDR64: | |
3122 | case R_PPC64_TOC: | |
3123 | if (r_symndx >= symtab_hdr->sh_info) | |
3124 | { | |
3125 | struct ppc_link_hash_entry *eh; | |
3126 | struct ppc_dyn_relocs **pp; | |
3127 | struct ppc_dyn_relocs *p; | |
65f38f15 | 3128 | |
a33d1f77 AM |
3129 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; |
3130 | eh = (struct ppc_link_hash_entry *) h; | |
3131 | ||
3132 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next) | |
3133 | if (p->sec == sec) | |
3134 | { | |
3135 | p->count -= 1; | |
3136 | if (p->count == 0) | |
3137 | *pp = p->next; | |
3138 | break; | |
3139 | } | |
3140 | } | |
3141 | break; | |
5bd4f169 | 3142 | |
a33d1f77 AM |
3143 | default: |
3144 | break; | |
3145 | } | |
3146 | } | |
5bd4f169 AM |
3147 | return true; |
3148 | } | |
3149 | ||
e86ce104 AM |
3150 | /* Called via elf_link_hash_traverse to transfer dynamic linking |
3151 | information on function code symbol entries to their corresponding | |
3152 | function descriptor symbol entries. */ | |
5bd4f169 | 3153 | static boolean |
e86ce104 | 3154 | func_desc_adjust (h, inf) |
5bd4f169 | 3155 | struct elf_link_hash_entry *h; |
e86ce104 | 3156 | PTR inf; |
5bd4f169 | 3157 | { |
e86ce104 | 3158 | struct bfd_link_info *info; |
65f38f15 | 3159 | struct ppc_link_hash_table *htab; |
5bd4f169 | 3160 | |
e92d460e | 3161 | if (h->root.type == bfd_link_hash_indirect) |
e86ce104 AM |
3162 | return true; |
3163 | ||
e92d460e AM |
3164 | if (h->root.type == bfd_link_hash_warning) |
3165 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
3166 | ||
e86ce104 | 3167 | info = (struct bfd_link_info *) inf; |
65f38f15 | 3168 | htab = ppc_hash_table (info); |
5bd4f169 | 3169 | |
e86ce104 AM |
3170 | /* If this is a function code symbol, transfer dynamic linking |
3171 | information to the function descriptor symbol. */ | |
3172 | if (!((struct ppc_link_hash_entry *) h)->is_func) | |
3173 | return true; | |
3174 | ||
805fc799 AM |
3175 | if (h->root.type == bfd_link_hash_undefweak |
3176 | && (h->elf_link_hash_flags & ELF_LINK_HASH_REF_REGULAR)) | |
3177 | htab->have_undefweak = true; | |
3178 | ||
e86ce104 AM |
3179 | if (h->plt.refcount > 0 |
3180 | && h->root.root.string[0] == '.' | |
3181 | && h->root.root.string[1] != '\0') | |
5bd4f169 | 3182 | { |
721956f4 | 3183 | struct elf_link_hash_entry *fdh = ((struct ppc_link_hash_entry *) h)->oh; |
e86ce104 | 3184 | boolean force_local; |
5bd4f169 | 3185 | |
648cca2c AM |
3186 | /* Find the corresponding function descriptor symbol. Create it |
3187 | as undefined if necessary. */ | |
5bd4f169 | 3188 | |
721956f4 AM |
3189 | if (fdh == NULL) |
3190 | fdh = elf_link_hash_lookup (&htab->elf, h->root.root.string + 1, | |
3191 | false, false, true); | |
5bd4f169 | 3192 | |
d926e03d AM |
3193 | if (fdh == NULL |
3194 | && info->shared | |
3195 | && (h->root.type == bfd_link_hash_undefined | |
3196 | || h->root.type == bfd_link_hash_undefweak)) | |
648cca2c AM |
3197 | { |
3198 | bfd *abfd; | |
3199 | asymbol *newsym; | |
3200 | ||
d926e03d | 3201 | abfd = h->root.u.undef.abfd; |
648cca2c AM |
3202 | newsym = bfd_make_empty_symbol (abfd); |
3203 | newsym->name = h->root.root.string + 1; | |
3204 | newsym->section = bfd_und_section_ptr; | |
3205 | newsym->value = 0; | |
3206 | newsym->flags = BSF_OBJECT; | |
3207 | if (h->root.type == bfd_link_hash_undefweak) | |
3208 | newsym->flags |= BSF_WEAK; | |
3209 | ||
3210 | if ( !(_bfd_generic_link_add_one_symbol | |
3211 | (info, abfd, newsym->name, newsym->flags, | |
3212 | newsym->section, newsym->value, NULL, false, false, | |
3213 | (struct bfd_link_hash_entry **) &fdh))) | |
3214 | { | |
3215 | return false; | |
3216 | } | |
d926e03d | 3217 | fdh->elf_link_hash_flags &= ~ELF_LINK_NON_ELF; |
648cca2c AM |
3218 | } |
3219 | ||
e86ce104 AM |
3220 | if (fdh != NULL |
3221 | && (fdh->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0 | |
3222 | && (info->shared | |
3223 | || (fdh->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0 | |
3224 | || (fdh->elf_link_hash_flags & ELF_LINK_HASH_REF_DYNAMIC) != 0)) | |
3225 | { | |
3226 | if (fdh->dynindx == -1) | |
3227 | if (! bfd_elf64_link_record_dynamic_symbol (info, fdh)) | |
3228 | return false; | |
e86ce104 AM |
3229 | fdh->elf_link_hash_flags |= (h->elf_link_hash_flags |
3230 | & (ELF_LINK_HASH_REF_REGULAR | |
3231 | | ELF_LINK_HASH_REF_DYNAMIC | |
3232 | | ELF_LINK_HASH_REF_REGULAR_NONWEAK | |
3233 | | ELF_LINK_NON_GOT_REF)); | |
e1fa50e7 AM |
3234 | if (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT) |
3235 | { | |
3236 | fdh->plt.refcount = h->plt.refcount; | |
3237 | fdh->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT; | |
3238 | } | |
e86ce104 | 3239 | ((struct ppc_link_hash_entry *) fdh)->is_func_descriptor = 1; |
721956f4 | 3240 | ((struct ppc_link_hash_entry *) fdh)->oh = h; |
721956f4 | 3241 | ((struct ppc_link_hash_entry *) h)->oh = fdh; |
e86ce104 AM |
3242 | } |
3243 | ||
3244 | /* Now that the info is on the function descriptor, clear the | |
3245 | function code sym info. Any function code syms for which we | |
3246 | don't have a definition in a regular file, we force local. | |
3247 | This prevents a shared library from exporting syms that have | |
3248 | been imported from another library. Function code syms that | |
3249 | are really in the library we must leave global to prevent the | |
e1fa50e7 | 3250 | linker dragging in a definition from a static library. */ |
ea1e4b0d AM |
3251 | force_local = (info->shared |
3252 | && ((h->elf_link_hash_flags | |
3253 | & ELF_LINK_HASH_DEF_REGULAR) == 0 | |
3254 | || fdh == NULL | |
3255 | || (fdh->elf_link_hash_flags | |
3256 | & ELF_LINK_HASH_DEF_REGULAR) == 0 | |
3257 | || (fdh->elf_link_hash_flags | |
3258 | & ELF_LINK_FORCED_LOCAL) != 0)); | |
e86ce104 AM |
3259 | _bfd_elf_link_hash_hide_symbol (info, h, force_local); |
3260 | } | |
3261 | ||
3262 | return true; | |
3263 | } | |
40b8271b | 3264 | |
82bd7b59 AM |
3265 | #define MIN_SAVE_FPR 14 |
3266 | #define MAX_SAVE_FPR 31 | |
3267 | ||
e86ce104 | 3268 | /* Called near the start of bfd_elf_size_dynamic_sections. We use |
82bd7b59 AM |
3269 | this hook to a) provide some gcc support functions, and b) transfer |
3270 | dynamic linking information gathered so far on function code symbol | |
3271 | entries, to their corresponding function descriptor symbol entries. */ | |
e86ce104 AM |
3272 | static boolean |
3273 | ppc64_elf_func_desc_adjust (obfd, info) | |
3274 | bfd *obfd ATTRIBUTE_UNUSED; | |
3275 | struct bfd_link_info *info; | |
3276 | { | |
3277 | struct ppc_link_hash_table *htab; | |
82bd7b59 AM |
3278 | unsigned int lowest_savef = MAX_SAVE_FPR + 2; |
3279 | unsigned int lowest_restf = MAX_SAVE_FPR + 2; | |
3280 | unsigned int i; | |
3281 | struct elf_link_hash_entry *h; | |
721956f4 | 3282 | bfd_byte *p; |
82bd7b59 | 3283 | char sym[10]; |
e86ce104 AM |
3284 | |
3285 | htab = ppc_hash_table (info); | |
82bd7b59 AM |
3286 | |
3287 | if (htab->sfpr == NULL) | |
3288 | /* We don't have any relocs. */ | |
3289 | return true; | |
3290 | ||
3291 | /* First provide any missing ._savef* and ._restf* functions. */ | |
3292 | memcpy (sym, "._savef14", 10); | |
3293 | for (i = MIN_SAVE_FPR; i <= MAX_SAVE_FPR; i++) | |
3294 | { | |
3295 | sym[7] = i / 10 + '0'; | |
3296 | sym[8] = i % 10 + '0'; | |
3297 | h = elf_link_hash_lookup (&htab->elf, sym, false, false, true); | |
3298 | if (h != NULL | |
3299 | && h->root.type == bfd_link_hash_undefined) | |
3300 | { | |
3301 | if (lowest_savef > i) | |
3302 | lowest_savef = i; | |
3303 | h->root.type = bfd_link_hash_defined; | |
3304 | h->root.u.def.section = htab->sfpr; | |
3305 | h->root.u.def.value = (i - lowest_savef) * 4; | |
3306 | h->type = STT_FUNC; | |
3307 | h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR; | |
3308 | _bfd_elf_link_hash_hide_symbol (info, h, info->shared); | |
3309 | } | |
3310 | } | |
3311 | ||
3312 | memcpy (sym, "._restf14", 10); | |
3313 | for (i = MIN_SAVE_FPR; i <= MAX_SAVE_FPR; i++) | |
3314 | { | |
3315 | sym[7] = i / 10 + '0'; | |
3316 | sym[8] = i % 10 + '0'; | |
3317 | h = elf_link_hash_lookup (&htab->elf, sym, false, false, true); | |
3318 | if (h != NULL | |
3319 | && h->root.type == bfd_link_hash_undefined) | |
3320 | { | |
3321 | if (lowest_restf > i) | |
3322 | lowest_restf = i; | |
3323 | h->root.type = bfd_link_hash_defined; | |
3324 | h->root.u.def.section = htab->sfpr; | |
3325 | h->root.u.def.value = ((MAX_SAVE_FPR + 2 - lowest_savef) * 4 | |
3326 | + (i - lowest_restf) * 4); | |
3327 | h->type = STT_FUNC; | |
3328 | h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR; | |
3329 | _bfd_elf_link_hash_hide_symbol (info, h, info->shared); | |
3330 | } | |
3331 | } | |
3332 | ||
805fc799 AM |
3333 | elf_link_hash_traverse (&htab->elf, func_desc_adjust, (PTR) info); |
3334 | ||
82bd7b59 AM |
3335 | htab->sfpr->_raw_size = ((MAX_SAVE_FPR + 2 - lowest_savef) * 4 |
3336 | + (MAX_SAVE_FPR + 2 - lowest_restf) * 4); | |
3337 | ||
3338 | if (htab->sfpr->_raw_size == 0) | |
805fc799 AM |
3339 | { |
3340 | if (!htab->have_undefweak) | |
3341 | { | |
3342 | _bfd_strip_section_from_output (info, htab->sfpr); | |
3343 | return true; | |
3344 | } | |
3345 | ||
3346 | htab->sfpr->_raw_size = 4; | |
3347 | } | |
82bd7b59 | 3348 | |
721956f4 AM |
3349 | p = (bfd_byte *) bfd_alloc (htab->elf.dynobj, htab->sfpr->_raw_size); |
3350 | if (p == NULL) | |
3351 | return false; | |
3352 | htab->sfpr->contents = p; | |
3353 | ||
3354 | for (i = lowest_savef; i <= MAX_SAVE_FPR; i++) | |
3355 | { | |
3356 | unsigned int fpr = i << 21; | |
3357 | unsigned int stackoff = (1 << 16) - (MAX_SAVE_FPR + 1 - i) * 8; | |
3358 | bfd_put_32 (htab->elf.dynobj, STFD_FR0_0R1 + fpr + stackoff, p); | |
3359 | p += 4; | |
3360 | } | |
3361 | if (lowest_savef <= MAX_SAVE_FPR) | |
3362 | { | |
82bd7b59 AM |
3363 | bfd_put_32 (htab->elf.dynobj, BLR, p); |
3364 | p += 4; | |
721956f4 | 3365 | } |
82bd7b59 | 3366 | |
721956f4 AM |
3367 | for (i = lowest_restf; i <= MAX_SAVE_FPR; i++) |
3368 | { | |
3369 | unsigned int fpr = i << 21; | |
3370 | unsigned int stackoff = (1 << 16) - (MAX_SAVE_FPR + 1 - i) * 8; | |
3371 | bfd_put_32 (htab->elf.dynobj, LFD_FR0_0R1 + fpr + stackoff, p); | |
82bd7b59 AM |
3372 | p += 4; |
3373 | } | |
721956f4 AM |
3374 | if (lowest_restf <= MAX_SAVE_FPR |
3375 | || htab->sfpr->_raw_size == 4) | |
3376 | { | |
3377 | bfd_put_32 (htab->elf.dynobj, BLR, p); | |
3378 | } | |
82bd7b59 | 3379 | |
e86ce104 AM |
3380 | return true; |
3381 | } | |
3382 | ||
3383 | /* Adjust a symbol defined by a dynamic object and referenced by a | |
3384 | regular object. The current definition is in some section of the | |
3385 | dynamic object, but we're not including those sections. We have to | |
3386 | change the definition to something the rest of the link can | |
3387 | understand. */ | |
3388 | ||
3389 | static boolean | |
3390 | ppc64_elf_adjust_dynamic_symbol (info, h) | |
3391 | struct bfd_link_info *info; | |
3392 | struct elf_link_hash_entry *h; | |
3393 | { | |
3394 | struct ppc_link_hash_table *htab; | |
3395 | struct ppc_link_hash_entry * eh; | |
3396 | struct ppc_dyn_relocs *p; | |
3397 | asection *s; | |
3398 | unsigned int power_of_two; | |
3399 | ||
3400 | htab = ppc_hash_table (info); | |
3401 | ||
3402 | /* Deal with function syms. */ | |
3403 | if (h->type == STT_FUNC | |
3404 | || (h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0) | |
3405 | { | |
3406 | /* Clear procedure linkage table information for any symbol that | |
3407 | won't need a .plt entry. */ | |
3408 | if (!((struct ppc_link_hash_entry *) h)->is_func_descriptor | |
3409 | || h->plt.refcount <= 0 | |
3410 | || (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0 | |
3411 | || (! info->shared | |
3412 | && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) == 0 | |
3413 | && (h->elf_link_hash_flags & ELF_LINK_HASH_REF_DYNAMIC) == 0)) | |
40b8271b | 3414 | { |
40b8271b AM |
3415 | h->plt.offset = (bfd_vma) -1; |
3416 | h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT; | |
40b8271b | 3417 | } |
5bd4f169 AM |
3418 | return true; |
3419 | } | |
bbd7ec4a AM |
3420 | else |
3421 | h->plt.offset = (bfd_vma) -1; | |
5bd4f169 AM |
3422 | |
3423 | /* If this is a weak symbol, and there is a real definition, the | |
3424 | processor independent code will have arranged for us to see the | |
3425 | real definition first, and we can just use the same value. */ | |
3426 | if (h->weakdef != NULL) | |
3427 | { | |
3428 | BFD_ASSERT (h->weakdef->root.type == bfd_link_hash_defined | |
3429 | || h->weakdef->root.type == bfd_link_hash_defweak); | |
3430 | h->root.u.def.section = h->weakdef->root.u.def.section; | |
3431 | h->root.u.def.value = h->weakdef->root.u.def.value; | |
0a991dfe | 3432 | return true; |
5bd4f169 AM |
3433 | } |
3434 | ||
3435 | /* This is a reference to a symbol defined by a dynamic object which | |
3436 | is not a function. */ | |
3437 | ||
3438 | /* If we are creating a shared library, we must presume that the | |
3439 | only references to the symbol are via the global offset table. | |
3440 | For such cases we need not do anything here; the relocations will | |
3441 | be handled correctly by relocate_section. */ | |
3442 | if (info->shared) | |
3443 | return true; | |
3444 | ||
65f38f15 AM |
3445 | /* If there are no references to this symbol that do not use the |
3446 | GOT, we don't need to generate a copy reloc. */ | |
3447 | if ((h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0) | |
3448 | return true; | |
3449 | ||
3450 | eh = (struct ppc_link_hash_entry *) h; | |
3451 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
3452 | { | |
3453 | s = p->sec->output_section; | |
3454 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
3455 | break; | |
3456 | } | |
3457 | ||
3458 | /* If we didn't find any dynamic relocs in read-only sections, then | |
5d1634d7 | 3459 | we'll be keeping the dynamic relocs and avoiding the copy reloc. */ |
65f38f15 AM |
3460 | if (p == NULL) |
3461 | { | |
3462 | h->elf_link_hash_flags &= ~ELF_LINK_NON_GOT_REF; | |
3463 | return true; | |
3464 | } | |
3465 | ||
5bd4f169 AM |
3466 | /* We must allocate the symbol in our .dynbss section, which will |
3467 | become part of the .bss section of the executable. There will be | |
3468 | an entry for this symbol in the .dynsym section. The dynamic | |
3469 | object will contain position independent code, so all references | |
3470 | from the dynamic object to this symbol will go through the global | |
3471 | offset table. The dynamic linker will use the .dynsym entry to | |
3472 | determine the address it must put in the global offset table, so | |
3473 | both the dynamic object and the regular object will refer to the | |
3474 | same memory location for the variable. */ | |
5bd4f169 AM |
3475 | |
3476 | /* We must generate a R_PPC_COPY reloc to tell the dynamic linker to | |
3477 | copy the initial value out of the dynamic object and into the | |
3478 | runtime process image. We need to remember the offset into the | |
3479 | .rela.bss section we are going to use. */ | |
3480 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0) | |
3481 | { | |
65f38f15 | 3482 | htab->srelbss->_raw_size += sizeof (Elf64_External_Rela); |
5bd4f169 AM |
3483 | h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_COPY; |
3484 | } | |
3485 | ||
3486 | /* We need to figure out the alignment required for this symbol. I | |
3487 | have no idea how ELF linkers handle this. */ | |
3488 | power_of_two = bfd_log2 (h->size); | |
3489 | if (power_of_two > 4) | |
3490 | power_of_two = 4; | |
3491 | ||
3492 | /* Apply the required alignment. */ | |
65f38f15 AM |
3493 | s = htab->sdynbss; |
3494 | s->_raw_size = BFD_ALIGN (s->_raw_size, (bfd_size_type) (1 << power_of_two)); | |
3495 | if (power_of_two > bfd_get_section_alignment (htab->elf.dynobj, s)) | |
5bd4f169 | 3496 | { |
65f38f15 | 3497 | if (! bfd_set_section_alignment (htab->elf.dynobj, s, power_of_two)) |
5bd4f169 AM |
3498 | return false; |
3499 | } | |
3500 | ||
3501 | /* Define the symbol as being at this point in the section. */ | |
3502 | h->root.u.def.section = s; | |
3503 | h->root.u.def.value = s->_raw_size; | |
3504 | ||
3505 | /* Increment the section size to make room for the symbol. */ | |
3506 | s->_raw_size += h->size; | |
3507 | ||
3508 | return true; | |
3509 | } | |
3510 | ||
e86ce104 AM |
3511 | /* If given a function descriptor symbol, hide both the function code |
3512 | sym and the descriptor. */ | |
3513 | static void | |
3514 | ppc64_elf_hide_symbol (info, h, force_local) | |
3515 | struct bfd_link_info *info; | |
3516 | struct elf_link_hash_entry *h; | |
3517 | boolean force_local; | |
3518 | { | |
3519 | _bfd_elf_link_hash_hide_symbol (info, h, force_local); | |
3520 | ||
3521 | if (((struct ppc_link_hash_entry *) h)->is_func_descriptor) | |
3522 | { | |
721956f4 | 3523 | struct elf_link_hash_entry *fh = ((struct ppc_link_hash_entry *) h)->oh; |
e86ce104 | 3524 | |
721956f4 | 3525 | if (fh == NULL) |
d1329ca3 AM |
3526 | { |
3527 | const char *p, *q; | |
3528 | struct ppc_link_hash_table *htab; | |
3529 | char save; | |
3530 | ||
3531 | /* We aren't supposed to use alloca in BFD because on | |
3532 | systems which do not have alloca the version in libiberty | |
3533 | calls xmalloc, which might cause the program to crash | |
3534 | when it runs out of memory. This function doesn't have a | |
3535 | return status, so there's no way to gracefully return an | |
3536 | error. So cheat. We know that string[-1] can be safely | |
3537 | dereferenced; It's either a string in an ELF string | |
3538 | table, or allocated in an objalloc structure. */ | |
3539 | ||
3540 | p = h->root.root.string - 1; | |
3541 | save = *p; | |
3542 | *(char *) p = '.'; | |
3543 | htab = ppc_hash_table (info); | |
3544 | fh = elf_link_hash_lookup (&htab->elf, p, false, false, false); | |
3545 | *(char *) p = save; | |
3546 | ||
3547 | /* Unfortunately, if it so happens that the string we were | |
3548 | looking for was allocated immediately before this string, | |
3549 | then we overwrote the string terminator. That's the only | |
3550 | reason the lookup should fail. */ | |
3551 | if (fh == NULL) | |
3552 | { | |
3553 | q = h->root.root.string + strlen (h->root.root.string); | |
3554 | while (q >= h->root.root.string && *q == *p) | |
3555 | --q, --p; | |
3556 | if (q < h->root.root.string && *p == '.') | |
3557 | fh = elf_link_hash_lookup (&htab->elf, p, false, false, false); | |
3558 | } | |
3559 | if (fh != NULL) | |
3560 | { | |
3561 | ((struct ppc_link_hash_entry *) h)->oh = fh; | |
3562 | ((struct ppc_link_hash_entry *) fh)->oh = h; | |
3563 | } | |
3564 | } | |
e86ce104 AM |
3565 | if (fh != NULL) |
3566 | _bfd_elf_link_hash_hide_symbol (info, fh, force_local); | |
3567 | } | |
3568 | } | |
3569 | ||
65f38f15 AM |
3570 | /* This is the condition under which ppc64_elf_finish_dynamic_symbol |
3571 | will be called from elflink.h. If elflink.h doesn't call our | |
3572 | finish_dynamic_symbol routine, we'll need to do something about | |
3573 | initializing any .plt and .got entries in ppc64_elf_relocate_section. */ | |
3574 | #define WILL_CALL_FINISH_DYNAMIC_SYMBOL(DYN, INFO, H) \ | |
3575 | ((DYN) \ | |
3576 | && ((INFO)->shared \ | |
3577 | || ((H)->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0) \ | |
3578 | && ((H)->dynindx != -1 \ | |
3579 | || ((H)->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0)) | |
5bd4f169 | 3580 | |
65f38f15 AM |
3581 | /* Allocate space in .plt, .got and associated reloc sections for |
3582 | dynamic relocs. */ | |
5bd4f169 AM |
3583 | |
3584 | static boolean | |
65f38f15 AM |
3585 | allocate_dynrelocs (h, inf) |
3586 | struct elf_link_hash_entry *h; | |
3587 | PTR inf; | |
5bd4f169 | 3588 | { |
65f38f15 AM |
3589 | struct bfd_link_info *info; |
3590 | struct ppc_link_hash_table *htab; | |
5bd4f169 | 3591 | asection *s; |
65f38f15 AM |
3592 | struct ppc_link_hash_entry *eh; |
3593 | struct ppc_dyn_relocs *p; | |
5bd4f169 | 3594 | |
e92d460e | 3595 | if (h->root.type == bfd_link_hash_indirect) |
65f38f15 | 3596 | return true; |
5bd4f169 | 3597 | |
e92d460e AM |
3598 | if (h->root.type == bfd_link_hash_warning) |
3599 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
3600 | ||
65f38f15 AM |
3601 | info = (struct bfd_link_info *) inf; |
3602 | htab = ppc_hash_table (info); | |
5bd4f169 | 3603 | |
65f38f15 | 3604 | if (htab->elf.dynamic_sections_created |
e86ce104 AM |
3605 | && h->plt.refcount > 0 |
3606 | && h->dynindx != -1) | |
5bd4f169 | 3607 | { |
e86ce104 | 3608 | BFD_ASSERT (((struct ppc_link_hash_entry *) h)->is_func_descriptor); |
5bd4f169 | 3609 | |
65f38f15 AM |
3610 | if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info, h)) |
3611 | { | |
65f38f15 AM |
3612 | /* If this is the first .plt entry, make room for the special |
3613 | first entry. */ | |
3614 | s = htab->splt; | |
5bd4f169 | 3615 | if (s->_raw_size == 0) |
65f38f15 AM |
3616 | s->_raw_size += PLT_INITIAL_ENTRY_SIZE; |
3617 | ||
3618 | h->plt.offset = s->_raw_size; | |
3619 | ||
3620 | /* Make room for this entry. */ | |
3621 | s->_raw_size += PLT_ENTRY_SIZE; | |
3622 | ||
721956f4 | 3623 | /* Make room for the .glink code. */ |
5d1634d7 AM |
3624 | s = htab->sglink; |
3625 | if (s->_raw_size == 0) | |
3626 | s->_raw_size += GLINK_CALL_STUB_SIZE; | |
3627 | /* We need bigger stubs past index 32767. */ | |
3628 | if (s->_raw_size >= GLINK_CALL_STUB_SIZE + 32768*2*4) | |
3629 | s->_raw_size += 4; | |
3630 | s->_raw_size += 2*4; | |
65f38f15 AM |
3631 | |
3632 | /* We also need to make an entry in the .rela.plt section. */ | |
3633 | s = htab->srelplt; | |
3634 | s->_raw_size += sizeof (Elf64_External_Rela); | |
3635 | } | |
3636 | else | |
3637 | { | |
3638 | h->plt.offset = (bfd_vma) -1; | |
3639 | h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT; | |
3640 | } | |
3641 | } | |
3642 | else | |
3643 | { | |
3644 | h->plt.offset = (bfd_vma) -1; | |
3645 | h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT; | |
3646 | } | |
3647 | ||
3648 | if (h->got.refcount > 0) | |
3649 | { | |
3650 | boolean dyn; | |
3651 | ||
3652 | /* Make sure this symbol is output as a dynamic symbol. | |
3653 | Undefined weak syms won't yet be marked as dynamic. */ | |
3654 | if (h->dynindx == -1 | |
3655 | && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0) | |
3656 | { | |
3657 | if (! bfd_elf64_link_record_dynamic_symbol (info, h)) | |
3658 | return false; | |
3659 | } | |
3660 | ||
3661 | s = htab->sgot; | |
3662 | h->got.offset = s->_raw_size; | |
3663 | s->_raw_size += 8; | |
3664 | dyn = htab->elf.dynamic_sections_created; | |
3665 | if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info, h)) | |
3666 | htab->srelgot->_raw_size += sizeof (Elf64_External_Rela); | |
3667 | } | |
3668 | else | |
3669 | h->got.offset = (bfd_vma) -1; | |
3670 | ||
3671 | eh = (struct ppc_link_hash_entry *) h; | |
3672 | if (eh->dyn_relocs == NULL) | |
3673 | return true; | |
3674 | ||
3675 | /* In the shared -Bsymbolic case, discard space allocated for | |
3676 | dynamic pc-relative relocs against symbols which turn out to be | |
3677 | defined in regular objects. For the normal shared case, discard | |
3678 | space for relocs that have become local due to symbol visibility | |
3679 | changes. */ | |
3680 | ||
3681 | if (info->shared) | |
3682 | { | |
3683 | if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) != 0 | |
3684 | && ((h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0 | |
3685 | || info->symbolic)) | |
3686 | { | |
3687 | struct ppc_dyn_relocs **pp; | |
3688 | ||
3689 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; ) | |
5bd4f169 | 3690 | { |
65f38f15 AM |
3691 | p->count -= p->pc_count; |
3692 | p->pc_count = 0; | |
3693 | if (p->count == 0) | |
3694 | *pp = p->next; | |
3695 | else | |
3696 | pp = &p->next; | |
5bd4f169 | 3697 | } |
65f38f15 AM |
3698 | } |
3699 | } | |
3700 | else | |
3701 | { | |
3702 | /* For the non-shared case, discard space for relocs against | |
3703 | symbols which turn out to need copy relocs or are not | |
3704 | dynamic. */ | |
3705 | ||
3706 | if ((h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0 | |
3707 | && (((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0 | |
3708 | && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0) | |
3709 | || (htab->elf.dynamic_sections_created | |
3710 | && (h->root.type == bfd_link_hash_undefweak | |
3711 | || h->root.type == bfd_link_hash_undefined)))) | |
3712 | { | |
3713 | /* Make sure this symbol is output as a dynamic symbol. | |
3714 | Undefined weak syms won't yet be marked as dynamic. */ | |
3715 | if (h->dynindx == -1 | |
3716 | && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0) | |
3717 | { | |
ec338859 | 3718 | if (! bfd_elf64_link_record_dynamic_symbol (info, h)) |
65f38f15 AM |
3719 | return false; |
3720 | } | |
3721 | ||
3722 | /* If that succeeded, we know we'll be keeping all the | |
3723 | relocs. */ | |
3724 | if (h->dynindx != -1) | |
3725 | goto keep; | |
3726 | } | |
3727 | ||
3728 | eh->dyn_relocs = NULL; | |
3729 | ||
ec338859 | 3730 | keep: ; |
65f38f15 AM |
3731 | } |
3732 | ||
3733 | /* Finally, allocate space. */ | |
3734 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
3735 | { | |
3736 | asection *sreloc = elf_section_data (p->sec)->sreloc; | |
3737 | sreloc->_raw_size += p->count * sizeof (Elf64_External_Rela); | |
3738 | } | |
3739 | ||
3740 | return true; | |
3741 | } | |
3742 | ||
3743 | /* Find any dynamic relocs that apply to read-only sections. */ | |
3744 | ||
3745 | static boolean | |
3746 | readonly_dynrelocs (h, inf) | |
3747 | struct elf_link_hash_entry *h; | |
3748 | PTR inf; | |
3749 | { | |
3750 | struct ppc_link_hash_entry *eh; | |
3751 | struct ppc_dyn_relocs *p; | |
3752 | ||
e92d460e AM |
3753 | if (h->root.type == bfd_link_hash_warning) |
3754 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
3755 | ||
65f38f15 AM |
3756 | eh = (struct ppc_link_hash_entry *) h; |
3757 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
3758 | { | |
3759 | asection *s = p->sec->output_section; | |
3760 | ||
3761 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
3762 | { | |
3763 | struct bfd_link_info *info = (struct bfd_link_info *) inf; | |
3764 | ||
3765 | info->flags |= DF_TEXTREL; | |
3766 | ||
3767 | /* Not an error, just cut short the traversal. */ | |
3768 | return false; | |
3769 | } | |
3770 | } | |
3771 | return true; | |
3772 | } | |
3773 | ||
3774 | /* Set the sizes of the dynamic sections. */ | |
3775 | ||
3776 | static boolean | |
3777 | ppc64_elf_size_dynamic_sections (output_bfd, info) | |
3778 | bfd *output_bfd ATTRIBUTE_UNUSED; | |
3779 | struct bfd_link_info *info; | |
3780 | { | |
3781 | struct ppc_link_hash_table *htab; | |
3782 | bfd *dynobj; | |
3783 | asection *s; | |
3784 | boolean relocs; | |
3785 | bfd *ibfd; | |
3786 | ||
3787 | htab = ppc_hash_table (info); | |
3788 | dynobj = htab->elf.dynobj; | |
3789 | if (dynobj == NULL) | |
3790 | abort (); | |
3791 | ||
3792 | if (htab->elf.dynamic_sections_created) | |
3793 | { | |
3794 | /* Set the contents of the .interp section to the interpreter. */ | |
3795 | if (! info->shared) | |
3796 | { | |
3797 | s = bfd_get_section_by_name (dynobj, ".interp"); | |
3798 | if (s == NULL) | |
3799 | abort (); | |
3800 | s->_raw_size = sizeof ELF_DYNAMIC_INTERPRETER; | |
3801 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; | |
3802 | } | |
3803 | } | |
3804 | ||
3805 | /* Set up .got offsets for local syms, and space for local dynamic | |
3806 | relocs. */ | |
3807 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
3808 | { | |
3809 | bfd_signed_vma *local_got; | |
3810 | bfd_signed_vma *end_local_got; | |
3811 | bfd_size_type locsymcount; | |
3812 | Elf_Internal_Shdr *symtab_hdr; | |
3813 | asection *srel; | |
3814 | ||
3815 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour) | |
3816 | continue; | |
3817 | ||
3818 | for (s = ibfd->sections; s != NULL; s = s->next) | |
3819 | { | |
ec338859 | 3820 | struct ppc_dyn_relocs *p; |
65f38f15 | 3821 | |
ec338859 AM |
3822 | for (p = *((struct ppc_dyn_relocs **) |
3823 | &elf_section_data (s)->local_dynrel); | |
3824 | p != NULL; | |
3825 | p = p->next) | |
65f38f15 | 3826 | { |
ec338859 AM |
3827 | if (!bfd_is_abs_section (p->sec) |
3828 | && bfd_is_abs_section (p->sec->output_section)) | |
3829 | { | |
3830 | /* Input section has been discarded, either because | |
3831 | it is a copy of a linkonce section or due to | |
3832 | linker script /DISCARD/, so we'll be discarding | |
3833 | the relocs too. */ | |
3834 | } | |
248866a8 | 3835 | else if (p->count != 0) |
ec338859 AM |
3836 | { |
3837 | srel = elf_section_data (p->sec)->sreloc; | |
3838 | srel->_raw_size += p->count * sizeof (Elf64_External_Rela); | |
248866a8 AM |
3839 | if ((p->sec->output_section->flags & SEC_READONLY) != 0) |
3840 | info->flags |= DF_TEXTREL; | |
ec338859 | 3841 | } |
65f38f15 AM |
3842 | } |
3843 | } | |
3844 | ||
3845 | local_got = elf_local_got_refcounts (ibfd); | |
3846 | if (!local_got) | |
3847 | continue; | |
3848 | ||
3849 | symtab_hdr = &elf_tdata (ibfd)->symtab_hdr; | |
3850 | locsymcount = symtab_hdr->sh_info; | |
3851 | end_local_got = local_got + locsymcount; | |
3852 | s = htab->sgot; | |
3853 | srel = htab->srelgot; | |
3854 | for (; local_got < end_local_got; ++local_got) | |
3855 | { | |
3856 | if (*local_got > 0) | |
5bd4f169 | 3857 | { |
65f38f15 AM |
3858 | *local_got = s->_raw_size; |
3859 | s->_raw_size += 8; | |
3860 | if (info->shared) | |
3861 | srel->_raw_size += sizeof (Elf64_External_Rela); | |
5bd4f169 | 3862 | } |
65f38f15 AM |
3863 | else |
3864 | *local_got = (bfd_vma) -1; | |
3865 | } | |
3866 | } | |
3867 | ||
3868 | /* Allocate global sym .plt and .got entries, and space for global | |
3869 | sym dynamic relocs. */ | |
3870 | elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, (PTR) info); | |
3871 | ||
3872 | /* We now have determined the sizes of the various dynamic sections. | |
3873 | Allocate memory for them. */ | |
3874 | relocs = false; | |
3875 | for (s = dynobj->sections; s != NULL; s = s->next) | |
3876 | { | |
3877 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
3878 | continue; | |
3879 | ||
721956f4 AM |
3880 | if (s == htab->sbrlt || s == htab->srelbrlt) |
3881 | /* These haven't been allocated yet; don't strip. */ | |
3882 | continue; | |
3883 | else if (s == htab->splt | |
3884 | || s == htab->sgot | |
3885 | || s == htab->sglink) | |
65f38f15 AM |
3886 | { |
3887 | /* Strip this section if we don't need it; see the | |
3888 | comment below. */ | |
5bd4f169 | 3889 | } |
65f38f15 | 3890 | else if (strncmp (bfd_get_section_name (dynobj, s), ".rela", 5) == 0) |
5bd4f169 AM |
3891 | { |
3892 | if (s->_raw_size == 0) | |
3893 | { | |
3894 | /* If we don't need this section, strip it from the | |
3895 | output file. This is mostly to handle .rela.bss and | |
3896 | .rela.plt. We must create both sections in | |
3897 | create_dynamic_sections, because they must be created | |
3898 | before the linker maps input sections to output | |
3899 | sections. The linker does that before | |
3900 | adjust_dynamic_symbol is called, and it is that | |
3901 | function which decides whether anything needs to go | |
3902 | into these sections. */ | |
5bd4f169 AM |
3903 | } |
3904 | else | |
3905 | { | |
65f38f15 AM |
3906 | if (s != htab->srelplt) |
3907 | relocs = true; | |
5bd4f169 AM |
3908 | |
3909 | /* We use the reloc_count field as a counter if we need | |
3910 | to copy relocs into the output file. */ | |
3911 | s->reloc_count = 0; | |
3912 | } | |
3913 | } | |
65f38f15 | 3914 | else |
5bd4f169 AM |
3915 | { |
3916 | /* It's not one of our sections, so don't allocate space. */ | |
3917 | continue; | |
3918 | } | |
3919 | ||
65f38f15 | 3920 | if (s->_raw_size == 0) |
5bd4f169 AM |
3921 | { |
3922 | _bfd_strip_section_from_output (info, s); | |
3923 | continue; | |
3924 | } | |
3925 | ||
5f333394 AM |
3926 | /* .plt is in the bss section. We don't initialise it. */ |
3927 | if ((s->flags & SEC_LOAD) == 0) | |
3928 | continue; | |
3929 | ||
65f38f15 AM |
3930 | /* Allocate memory for the section contents. We use bfd_zalloc |
3931 | here in case unused entries are not reclaimed before the | |
3932 | section's contents are written out. This should not happen, | |
3933 | but this way if it does, we get a R_PPC64_NONE reloc instead | |
3934 | of garbage. */ | |
721956f4 | 3935 | s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->_raw_size); |
65f38f15 | 3936 | if (s->contents == NULL) |
5bd4f169 AM |
3937 | return false; |
3938 | } | |
3939 | ||
e86ce104 | 3940 | if (htab->elf.dynamic_sections_created) |
5bd4f169 AM |
3941 | { |
3942 | /* Add some entries to the .dynamic section. We fill in the | |
3943 | values later, in ppc64_elf_finish_dynamic_sections, but we | |
3944 | must add the entries now so that we get the correct size for | |
3945 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
3946 | dynamic linker and used by the debugger. */ | |
dc810e39 AM |
3947 | #define add_dynamic_entry(TAG, VAL) \ |
3948 | bfd_elf64_add_dynamic_entry (info, (bfd_vma) (TAG), (bfd_vma) (VAL)) | |
3949 | ||
3950 | if (!info->shared) | |
5bd4f169 | 3951 | { |
dc810e39 | 3952 | if (!add_dynamic_entry (DT_DEBUG, 0)) |
5bd4f169 AM |
3953 | return false; |
3954 | } | |
3955 | ||
9c07fe7c | 3956 | if (htab->splt != NULL && htab->splt->_raw_size != 0) |
5bd4f169 | 3957 | { |
dc810e39 AM |
3958 | if (!add_dynamic_entry (DT_PLTGOT, 0) |
3959 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
3960 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) | |
5d1634d7 AM |
3961 | || !add_dynamic_entry (DT_JMPREL, 0) |
3962 | || !add_dynamic_entry (DT_PPC64_GLINK, 0)) | |
5bd4f169 AM |
3963 | return false; |
3964 | } | |
3965 | ||
19397422 AM |
3966 | if (NO_OPD_RELOCS) |
3967 | { | |
3968 | if (!add_dynamic_entry (DT_PPC64_OPD, 0) | |
3969 | || !add_dynamic_entry (DT_PPC64_OPDSZ, 0)) | |
3970 | return false; | |
3971 | } | |
3972 | ||
5bd4f169 AM |
3973 | if (relocs) |
3974 | { | |
dc810e39 AM |
3975 | if (!add_dynamic_entry (DT_RELA, 0) |
3976 | || !add_dynamic_entry (DT_RELASZ, 0) | |
3977 | || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela))) | |
5bd4f169 | 3978 | return false; |
5bd4f169 | 3979 | |
65f38f15 AM |
3980 | /* If any dynamic relocs apply to a read-only section, |
3981 | then we need a DT_TEXTREL entry. */ | |
248866a8 AM |
3982 | if ((info->flags & DF_TEXTREL) == 0) |
3983 | elf_link_hash_traverse (&htab->elf, readonly_dynrelocs, | |
3984 | (PTR) info); | |
5bd4f169 | 3985 | |
65f38f15 | 3986 | if ((info->flags & DF_TEXTREL) != 0) |
5bd4f169 | 3987 | { |
65f38f15 AM |
3988 | if (!add_dynamic_entry (DT_TEXTREL, 0)) |
3989 | return false; | |
5bd4f169 | 3990 | } |
5bd4f169 | 3991 | } |
5bd4f169 | 3992 | } |
65f38f15 | 3993 | #undef add_dynamic_entry |
5bd4f169 AM |
3994 | |
3995 | return true; | |
3996 | } | |
3997 | ||
721956f4 | 3998 | /* Determine the type of stub needed, if any, for a call. */ |
5bd4f169 | 3999 | |
721956f4 AM |
4000 | static INLINE enum ppc_stub_type |
4001 | ppc_type_of_stub (input_sec, rel, hash, destination) | |
4002 | asection *input_sec; | |
4003 | const Elf_Internal_Rela *rel; | |
4004 | struct ppc_link_hash_entry **hash; | |
4005 | bfd_vma destination; | |
5bd4f169 | 4006 | { |
721956f4 AM |
4007 | struct ppc_link_hash_entry *h = *hash; |
4008 | bfd_vma location; | |
4009 | bfd_vma branch_offset; | |
4010 | bfd_vma max_branch_offset; | |
4011 | unsigned int r_type; | |
5bd4f169 | 4012 | |
721956f4 AM |
4013 | if (h != NULL) |
4014 | { | |
4015 | if (h->oh != NULL | |
4016 | && h->oh->plt.offset != (bfd_vma) -1 | |
4017 | && h->oh->dynindx != -1) | |
5bd4f169 | 4018 | { |
721956f4 AM |
4019 | *hash = (struct ppc_link_hash_entry *) h->oh; |
4020 | return ppc_stub_plt_call; | |
5bd4f169 AM |
4021 | } |
4022 | ||
721956f4 AM |
4023 | if (h->elf.root.type == bfd_link_hash_undefweak |
4024 | || h->elf.root.type == bfd_link_hash_undefined) | |
4025 | return ppc_stub_none; | |
5d1634d7 | 4026 | } |
5d1634d7 | 4027 | |
721956f4 AM |
4028 | /* Determine where the call point is. */ |
4029 | location = (input_sec->output_offset | |
4030 | + input_sec->output_section->vma | |
4031 | + rel->r_offset); | |
5d1634d7 | 4032 | |
721956f4 AM |
4033 | branch_offset = destination - location; |
4034 | r_type = ELF64_R_TYPE (rel->r_info); | |
5d1634d7 | 4035 | |
721956f4 AM |
4036 | /* Determine if a long branch stub is needed. */ |
4037 | max_branch_offset = 1 << 25; | |
4038 | if (r_type != (unsigned int) R_PPC64_REL24) | |
4039 | max_branch_offset = 1 << 15; | |
5d1634d7 | 4040 | |
721956f4 AM |
4041 | if (branch_offset + max_branch_offset >= 2 * max_branch_offset) |
4042 | /* We need a stub. Figure out whether a long_branch or plt_branch | |
4043 | is needed later. */ | |
4044 | return ppc_stub_long_branch; | |
5d1634d7 | 4045 | |
721956f4 | 4046 | return ppc_stub_none; |
5d1634d7 AM |
4047 | } |
4048 | ||
4049 | /* Build a .plt call stub. */ | |
4050 | ||
4051 | static bfd_byte * | |
4052 | build_plt_stub (obfd, p, offset, glink) | |
4053 | bfd *obfd; | |
4054 | bfd_byte *p; | |
4055 | int offset; | |
4056 | int glink; | |
4057 | { | |
4058 | #define PPC_LO(v) ((v) & 0xffff) | |
4059 | #define PPC_HI(v) (((v) >> 16) & 0xffff) | |
4060 | #define PPC_HA(v) PPC_HI ((v) + 0x8000) | |
4061 | ||
4062 | if (glink) | |
4063 | bfd_put_32 (obfd, LD_R2_40R1, p), p += 4; | |
4064 | bfd_put_32 (obfd, ADDIS_R12_R2 | PPC_HA (offset), p), p += 4; | |
4065 | if (!glink) | |
4066 | bfd_put_32 (obfd, STD_R2_40R1, p), p += 4; | |
4067 | bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset), p), p += 4; | |
4068 | if (PPC_HA (offset + 8) != PPC_HA (offset)) | |
4069 | bfd_put_32 (obfd, ADDIS_R12_R12_1, p), p += 4; | |
4070 | offset += 8; | |
4071 | bfd_put_32 (obfd, LD_R2_0R12 | PPC_LO (offset), p), p += 4; | |
4072 | if (PPC_HA (offset + 8) != PPC_HA (offset)) | |
4073 | bfd_put_32 (obfd, ADDIS_R12_R12_1, p), p += 4; | |
4074 | offset += 8; | |
4075 | bfd_put_32 (obfd, MTCTR_R11, p), p += 4; | |
4076 | bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset), p), p += 4; | |
4077 | bfd_put_32 (obfd, BCTR, p), p += 4; | |
4078 | return p; | |
4079 | } | |
4080 | ||
5d1634d7 | 4081 | static boolean |
721956f4 AM |
4082 | ppc_build_one_stub (gen_entry, in_arg) |
4083 | struct bfd_hash_entry *gen_entry; | |
4084 | PTR in_arg; | |
5d1634d7 | 4085 | { |
721956f4 AM |
4086 | struct ppc_stub_hash_entry *stub_entry; |
4087 | struct ppc_branch_hash_entry *br_entry; | |
5d1634d7 AM |
4088 | struct bfd_link_info *info; |
4089 | struct ppc_link_hash_table *htab; | |
721956f4 AM |
4090 | asection *stub_sec; |
4091 | bfd *stub_bfd; | |
4092 | bfd_byte *loc; | |
4093 | bfd_byte *p; | |
4094 | unsigned int indx; | |
4095 | bfd_vma off; | |
4096 | int size; | |
5d1634d7 | 4097 | |
721956f4 AM |
4098 | /* Massage our args to the form they really have. */ |
4099 | stub_entry = (struct ppc_stub_hash_entry *) gen_entry; | |
4100 | info = (struct bfd_link_info *) in_arg; | |
5d1634d7 | 4101 | |
5d1634d7 | 4102 | htab = ppc_hash_table (info); |
721956f4 | 4103 | stub_sec = stub_entry->stub_sec; |
5d1634d7 | 4104 | |
721956f4 AM |
4105 | /* Make a note of the offset within the stubs for this entry. */ |
4106 | stub_entry->stub_offset = stub_sec->_cooked_size; | |
4107 | loc = stub_sec->contents + stub_entry->stub_offset; | |
4108 | ||
4109 | stub_bfd = stub_sec->owner; | |
4110 | ||
4111 | switch (stub_entry->stub_type) | |
5d1634d7 | 4112 | { |
721956f4 AM |
4113 | case ppc_stub_long_branch: |
4114 | /* Branches are relative. This is where we are going to. */ | |
4115 | off = (stub_entry->target_value | |
4116 | + stub_entry->target_section->output_offset | |
4117 | + stub_entry->target_section->output_section->vma); | |
5d1634d7 | 4118 | |
721956f4 AM |
4119 | /* And this is where we are coming from. */ |
4120 | off -= (stub_entry->stub_offset | |
4121 | + stub_sec->output_offset | |
4122 | + stub_sec->output_section->vma); | |
e86ce104 | 4123 | |
721956f4 | 4124 | BFD_ASSERT (off + (1 << 25) < (bfd_vma) (1 << 26)); |
e86ce104 | 4125 | |
721956f4 AM |
4126 | bfd_put_32 (stub_bfd, (bfd_vma) B_DOT | (off & 0x3fffffc), loc); |
4127 | size = 4; | |
4128 | break; | |
e86ce104 | 4129 | |
721956f4 AM |
4130 | case ppc_stub_plt_branch: |
4131 | br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table, | |
4132 | stub_entry->root.string + 9, | |
4133 | false, false); | |
4134 | if (br_entry == NULL) | |
4135 | { | |
4136 | (*_bfd_error_handler) (_("can't find branch stub `%s'"), | |
4137 | stub_entry->root.string + 9); | |
4138 | htab->stub_error = true; | |
4139 | return false; | |
4140 | } | |
4141 | ||
4142 | off = (stub_entry->target_value | |
4143 | + stub_entry->target_section->output_offset | |
4144 | + stub_entry->target_section->output_section->vma); | |
4145 | ||
4146 | bfd_put_64 (htab->sbrlt->owner, off, | |
4147 | htab->sbrlt->contents + br_entry->offset); | |
4148 | ||
4149 | if (info->shared) | |
4150 | { | |
4151 | /* Create a reloc for the branch lookup table entry. */ | |
4152 | Elf_Internal_Rela rela; | |
4153 | Elf64_External_Rela *r; | |
5d1634d7 | 4154 | |
721956f4 AM |
4155 | rela.r_offset = (br_entry->offset |
4156 | + htab->sbrlt->output_offset | |
4157 | + htab->sbrlt->output_section->vma); | |
4158 | rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
4159 | rela.r_addend = off; | |
4160 | ||
4161 | r = (Elf64_External_Rela *) htab->srelbrlt->contents; | |
4162 | r += htab->srelbrlt->reloc_count++; | |
4163 | bfd_elf64_swap_reloca_out (htab->srelbrlt->owner, &rela, r); | |
4164 | } | |
4165 | ||
4166 | off = (br_entry->offset | |
4167 | + htab->sbrlt->output_offset | |
4168 | + htab->sbrlt->output_section->vma | |
4169 | - elf_gp (htab->sbrlt->output_section->owner) | |
4170 | - TOC_BASE_OFF); | |
4171 | ||
4172 | if (off + 0x80000000 > 0xffffffff || (off & 7) != 0) | |
5d1634d7 AM |
4173 | { |
4174 | (*_bfd_error_handler) | |
e86ce104 | 4175 | (_("linkage table error against `%s'"), |
721956f4 | 4176 | stub_entry->root.string); |
5d1634d7 | 4177 | bfd_set_error (bfd_error_bad_value); |
721956f4 | 4178 | htab->stub_error = true; |
5d1634d7 AM |
4179 | return false; |
4180 | } | |
41bd81ab | 4181 | |
721956f4 AM |
4182 | indx = off; |
4183 | bfd_put_32 (stub_bfd, (bfd_vma) ADDIS_R12_R2 | PPC_HA (indx), loc); | |
4184 | bfd_put_32 (stub_bfd, (bfd_vma) LD_R11_0R12 | PPC_LO (indx), loc + 4); | |
4185 | bfd_put_32 (stub_bfd, (bfd_vma) MTCTR_R11, loc + 8); | |
4186 | bfd_put_32 (stub_bfd, (bfd_vma) BCTR, loc + 12); | |
4187 | size = 16; | |
4188 | break; | |
5d1634d7 | 4189 | |
721956f4 | 4190 | case ppc_stub_plt_call: |
5d1634d7 | 4191 | /* Build the .glink lazy link call stub. */ |
721956f4 AM |
4192 | p = htab->sglink->contents + htab->sglink->_cooked_size; |
4193 | indx = htab->sglink->reloc_count; | |
5d1634d7 AM |
4194 | if (indx < 0x8000) |
4195 | { | |
721956f4 | 4196 | bfd_put_32 (htab->sglink->owner, LI_R0_0 | indx, p); |
5d1634d7 AM |
4197 | p += 4; |
4198 | } | |
4199 | else | |
4200 | { | |
721956f4 | 4201 | bfd_put_32 (htab->sglink->owner, LIS_R0_0 | PPC_HI (indx), p); |
5d1634d7 | 4202 | p += 4; |
721956f4 | 4203 | bfd_put_32 (htab->sglink->owner, ORI_R0_R0_0 | PPC_LO (indx), p); |
5d1634d7 AM |
4204 | p += 4; |
4205 | } | |
721956f4 AM |
4206 | bfd_put_32 (htab->sglink->owner, |
4207 | B_DOT | ((htab->sglink->contents - p) & 0x3fffffc), p); | |
5d1634d7 | 4208 | p += 4; |
721956f4 AM |
4209 | htab->sglink->_cooked_size = p - htab->sglink->contents; |
4210 | htab->sglink->reloc_count += 1; | |
4211 | ||
c862ae31 AM |
4212 | /* Do the best we can for shared libraries built without |
4213 | exporting ".foo" for each "foo". This can happen when symbol | |
4214 | versioning scripts strip all bar a subset of symbols. */ | |
4215 | if (stub_entry->h->oh->root.type != bfd_link_hash_defined | |
4216 | && stub_entry->h->oh->root.type != bfd_link_hash_defweak) | |
4217 | { | |
4218 | /* Point the symbol at the stub. There may be multiple stubs, | |
4219 | we don't really care; The main thing is to make this sym | |
4220 | defined somewhere. */ | |
4221 | stub_entry->h->oh->root.type = bfd_link_hash_defined; | |
4222 | stub_entry->h->oh->root.u.def.section = stub_entry->stub_sec; | |
4223 | stub_entry->h->oh->root.u.def.value = stub_entry->stub_offset; | |
4224 | } | |
4225 | ||
721956f4 AM |
4226 | /* Now build the stub. */ |
4227 | off = stub_entry->h->elf.plt.offset; | |
4228 | if (off >= (bfd_vma) -2) | |
4229 | abort (); | |
4230 | ||
4231 | off &= ~ (bfd_vma) 1; | |
4232 | off += (htab->splt->output_offset | |
4233 | + htab->splt->output_section->vma | |
4234 | - elf_gp (htab->splt->output_section->owner) | |
4235 | - TOC_BASE_OFF); | |
4236 | ||
4237 | if (off + 0x80000000 > 0xffffffff || (off & 7) != 0) | |
4238 | { | |
4239 | (*_bfd_error_handler) | |
4240 | (_("linkage table error against `%s'"), | |
4241 | stub_entry->h->elf.root.root.string); | |
4242 | bfd_set_error (bfd_error_bad_value); | |
4243 | htab->stub_error = true; | |
4244 | return false; | |
4245 | } | |
4246 | ||
4247 | p = build_plt_stub (stub_bfd, loc, (int) off, 0); | |
4248 | size = p - loc; | |
4249 | break; | |
4250 | ||
4251 | default: | |
4252 | BFD_FAIL (); | |
4253 | return false; | |
4254 | } | |
4255 | ||
4256 | stub_sec->_cooked_size += size; | |
4257 | return true; | |
4258 | } | |
4259 | ||
4260 | /* As above, but don't actually build the stub. Just bump offset so | |
4261 | we know stub section sizes, and select plt_branch stubs where | |
4262 | long_branch stubs won't do. */ | |
4263 | ||
4264 | static boolean | |
4265 | ppc_size_one_stub (gen_entry, in_arg) | |
4266 | struct bfd_hash_entry *gen_entry; | |
4267 | PTR in_arg; | |
4268 | { | |
4269 | struct ppc_stub_hash_entry *stub_entry; | |
4270 | struct ppc_link_hash_table *htab; | |
4271 | bfd_vma off; | |
4272 | int size; | |
4273 | ||
4274 | /* Massage our args to the form they really have. */ | |
4275 | stub_entry = (struct ppc_stub_hash_entry *) gen_entry; | |
4276 | htab = (struct ppc_link_hash_table *) in_arg; | |
4277 | ||
4278 | if (stub_entry->stub_type == ppc_stub_plt_call) | |
4279 | { | |
4280 | off = stub_entry->h->elf.plt.offset & ~(bfd_vma) 1; | |
4281 | off += (htab->splt->output_offset | |
4282 | + htab->splt->output_section->vma | |
4283 | - elf_gp (htab->splt->output_section->owner) | |
4284 | - TOC_BASE_OFF); | |
4285 | ||
4286 | size = 28; | |
4287 | if (PPC_HA ((int) off + 16) != PPC_HA ((int) off)) | |
4288 | size += 4; | |
4289 | } | |
4290 | else | |
4291 | { | |
4292 | /* ppc_stub_long_branch or ppc_stub_plt_branch. */ | |
4293 | stub_entry->stub_type = ppc_stub_long_branch; | |
4294 | size = 4; | |
4295 | ||
4296 | off = (stub_entry->target_value | |
4297 | + stub_entry->target_section->output_offset | |
4298 | + stub_entry->target_section->output_section->vma); | |
4299 | off -= (stub_entry->stub_sec->_raw_size | |
4300 | + stub_entry->stub_sec->output_offset | |
4301 | + stub_entry->stub_sec->output_section->vma); | |
4302 | ||
4303 | if (off + (1 << 25) >= (bfd_vma) (1 << 26)) | |
4304 | { | |
4305 | struct ppc_branch_hash_entry *br_entry; | |
4306 | ||
4307 | br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table, | |
4308 | stub_entry->root.string + 9, | |
4309 | true, false); | |
4310 | if (br_entry == NULL) | |
4311 | { | |
4312 | (*_bfd_error_handler) (_("can't build branch stub `%s'"), | |
4313 | stub_entry->root.string + 9); | |
4314 | htab->stub_error = true; | |
4315 | return false; | |
4316 | } | |
4317 | ||
4318 | if (br_entry->iter != htab->stub_iteration) | |
4319 | { | |
4320 | br_entry->iter = htab->stub_iteration; | |
4321 | br_entry->offset = htab->sbrlt->_raw_size; | |
4322 | htab->sbrlt->_raw_size += 8; | |
4323 | } | |
4324 | stub_entry->stub_type = ppc_stub_plt_branch; | |
4325 | size = 16; | |
4326 | } | |
4327 | } | |
4328 | ||
4329 | stub_entry->stub_sec->_raw_size += size; | |
4330 | return true; | |
4331 | } | |
4332 | ||
4333 | /* Set up various things so that we can make a list of input sections | |
4334 | for each output section included in the link. Returns -1 on error, | |
cedb70c5 | 4335 | 0 when no stubs will be needed, and 1 on success. */ |
721956f4 AM |
4336 | |
4337 | int | |
4338 | ppc64_elf_setup_section_lists (output_bfd, info) | |
4339 | bfd *output_bfd; | |
4340 | struct bfd_link_info *info; | |
4341 | { | |
4342 | bfd *input_bfd; | |
4343 | unsigned int bfd_count; | |
4344 | int top_id, top_index; | |
4345 | asection *section; | |
4346 | asection **input_list, **list; | |
4347 | bfd_size_type amt; | |
4348 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
4349 | ||
805fc799 AM |
4350 | if (htab->elf.root.creator->flavour != bfd_target_elf_flavour |
4351 | || htab->sbrlt == NULL) | |
721956f4 AM |
4352 | return 0; |
4353 | ||
4354 | /* Count the number of input BFDs and find the top input section id. */ | |
4355 | for (input_bfd = info->input_bfds, bfd_count = 0, top_id = 0; | |
4356 | input_bfd != NULL; | |
4357 | input_bfd = input_bfd->link_next) | |
4358 | { | |
4359 | bfd_count += 1; | |
4360 | for (section = input_bfd->sections; | |
4361 | section != NULL; | |
4362 | section = section->next) | |
4363 | { | |
4364 | if (top_id < section->id) | |
4365 | top_id = section->id; | |
4366 | } | |
4367 | } | |
4368 | htab->bfd_count = bfd_count; | |
4369 | ||
4370 | amt = sizeof (struct map_stub) * (top_id + 1); | |
4371 | htab->stub_group = (struct map_stub *) bfd_zmalloc (amt); | |
4372 | if (htab->stub_group == NULL) | |
4373 | return -1; | |
4374 | ||
4375 | /* We can't use output_bfd->section_count here to find the top output | |
4376 | section index as some sections may have been removed, and | |
4377 | _bfd_strip_section_from_output doesn't renumber the indices. */ | |
4378 | for (section = output_bfd->sections, top_index = 0; | |
4379 | section != NULL; | |
4380 | section = section->next) | |
4381 | { | |
4382 | if (top_index < section->index) | |
4383 | top_index = section->index; | |
4384 | } | |
4385 | ||
4386 | htab->top_index = top_index; | |
4387 | amt = sizeof (asection *) * (top_index + 1); | |
4388 | input_list = (asection **) bfd_malloc (amt); | |
4389 | htab->input_list = input_list; | |
4390 | if (input_list == NULL) | |
4391 | return -1; | |
4392 | ||
4393 | /* For sections we aren't interested in, mark their entries with a | |
4394 | value we can check later. */ | |
4395 | list = input_list + top_index; | |
4396 | do | |
4397 | *list = bfd_abs_section_ptr; | |
4398 | while (list-- != input_list); | |
4399 | ||
4400 | for (section = output_bfd->sections; | |
4401 | section != NULL; | |
4402 | section = section->next) | |
4403 | { | |
4404 | if ((section->flags & SEC_CODE) != 0) | |
4405 | input_list[section->index] = NULL; | |
4406 | } | |
4407 | ||
4408 | return 1; | |
4409 | } | |
4410 | ||
4411 | /* The linker repeatedly calls this function for each input section, | |
4412 | in the order that input sections are linked into output sections. | |
4413 | Build lists of input sections to determine groupings between which | |
4414 | we may insert linker stubs. */ | |
4415 | ||
4416 | void | |
805fc799 | 4417 | ppc64_elf_next_input_section (info, isec) |
721956f4 AM |
4418 | struct bfd_link_info *info; |
4419 | asection *isec; | |
4420 | { | |
4421 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
4422 | ||
805fc799 | 4423 | if (isec->output_section->index <= htab->top_index) |
721956f4 AM |
4424 | { |
4425 | asection **list = htab->input_list + isec->output_section->index; | |
4426 | if (*list != bfd_abs_section_ptr) | |
4427 | { | |
4428 | /* Steal the link_sec pointer for our list. */ | |
4429 | #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec) | |
4430 | /* This happens to make the list in reverse order, | |
4431 | which is what we want. */ | |
4432 | PREV_SEC (isec) = *list; | |
4433 | *list = isec; | |
4434 | } | |
4435 | } | |
4436 | } | |
4437 | ||
4438 | /* See whether we can group stub sections together. Grouping stub | |
4439 | sections may result in fewer stubs. More importantly, we need to | |
4440 | put all .init* and .fini* stubs at the beginning of the .init or | |
4441 | .fini output sections respectively, because glibc splits the | |
4442 | _init and _fini functions into multiple parts. Putting a stub in | |
4443 | the middle of a function is not a good idea. */ | |
4444 | ||
4445 | static void | |
4446 | group_sections (htab, stub_group_size, stubs_always_before_branch) | |
4447 | struct ppc_link_hash_table *htab; | |
4448 | bfd_size_type stub_group_size; | |
4449 | boolean stubs_always_before_branch; | |
4450 | { | |
4451 | asection **list = htab->input_list + htab->top_index; | |
4452 | do | |
4453 | { | |
4454 | asection *tail = *list; | |
4455 | if (tail == bfd_abs_section_ptr) | |
4456 | continue; | |
4457 | while (tail != NULL) | |
4458 | { | |
4459 | asection *curr; | |
4460 | asection *prev; | |
4461 | bfd_size_type total; | |
4462 | ||
4463 | curr = tail; | |
4464 | if (tail->_cooked_size) | |
4465 | total = tail->_cooked_size; | |
4466 | else | |
4467 | total = tail->_raw_size; | |
4468 | while ((prev = PREV_SEC (curr)) != NULL | |
4469 | && ((total += curr->output_offset - prev->output_offset) | |
4470 | < stub_group_size)) | |
4471 | curr = prev; | |
4472 | ||
4473 | /* OK, the size from the start of CURR to the end is less | |
4474 | than stub_group_size and thus can be handled by one stub | |
4475 | section. (or the tail section is itself larger than | |
4476 | stub_group_size, in which case we may be toast.) We | |
4477 | should really be keeping track of the total size of stubs | |
4478 | added here, as stubs contribute to the final output | |
4479 | section size. That's a little tricky, and this way will | |
4480 | only break if stubs added make the total size more than | |
4481 | 2^25, ie. for the default stub_group_size, if stubs total | |
4482 | more than 2834432 bytes, or over 100000 plt call stubs. */ | |
4483 | do | |
4484 | { | |
4485 | prev = PREV_SEC (tail); | |
4486 | /* Set up this stub group. */ | |
4487 | htab->stub_group[tail->id].link_sec = curr; | |
4488 | } | |
4489 | while (tail != curr && (tail = prev) != NULL); | |
4490 | ||
4491 | /* But wait, there's more! Input sections up to stub_group_size | |
4492 | bytes before the stub section can be handled by it too. */ | |
4493 | if (!stubs_always_before_branch) | |
4494 | { | |
4495 | total = 0; | |
4496 | while (prev != NULL | |
4497 | && ((total += tail->output_offset - prev->output_offset) | |
4498 | < stub_group_size)) | |
4499 | { | |
4500 | tail = prev; | |
4501 | prev = PREV_SEC (tail); | |
4502 | htab->stub_group[tail->id].link_sec = curr; | |
4503 | } | |
4504 | } | |
4505 | tail = prev; | |
4506 | } | |
4507 | } | |
4508 | while (list-- != htab->input_list); | |
4509 | free (htab->input_list); | |
4510 | #undef PREV_SEC | |
4511 | } | |
4512 | ||
4513 | /* Read in all local syms for all input bfds. */ | |
4514 | ||
4515 | static boolean | |
4516 | get_local_syms (input_bfd, htab) | |
4517 | bfd *input_bfd; | |
4518 | struct ppc_link_hash_table *htab; | |
4519 | { | |
4520 | unsigned int bfd_indx; | |
4521 | Elf_Internal_Sym *local_syms, **all_local_syms; | |
4522 | ||
4523 | /* We want to read in symbol extension records only once. To do this | |
4524 | we need to read in the local symbols in parallel and save them for | |
4525 | later use; so hold pointers to the local symbols in an array. */ | |
4526 | bfd_size_type amt = sizeof (Elf_Internal_Sym *) * htab->bfd_count; | |
4527 | all_local_syms = (Elf_Internal_Sym **) bfd_zmalloc (amt); | |
4528 | htab->all_local_syms = all_local_syms; | |
4529 | if (all_local_syms == NULL) | |
4530 | return false; | |
4531 | ||
4532 | /* Walk over all the input BFDs, swapping in local symbols. | |
4533 | If we are creating a shared library, create hash entries for the | |
4534 | export stubs. */ | |
4535 | for (bfd_indx = 0; | |
4536 | input_bfd != NULL; | |
4537 | input_bfd = input_bfd->link_next, bfd_indx++) | |
4538 | { | |
4539 | Elf_Internal_Shdr *symtab_hdr; | |
4540 | Elf_Internal_Shdr *shndx_hdr; | |
4541 | Elf_Internal_Sym *isym; | |
4542 | Elf64_External_Sym *ext_syms, *esym, *end_sy; | |
4543 | Elf_External_Sym_Shndx *shndx_buf, *shndx; | |
4544 | bfd_size_type sec_size; | |
4545 | ||
4546 | /* We'll need the symbol table in a second. */ | |
4547 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
4548 | if (symtab_hdr->sh_info == 0) | |
4549 | continue; | |
4550 | ||
4551 | /* We need an array of the local symbols attached to the input bfd. | |
4552 | Unfortunately, we're going to have to read & swap them in. */ | |
4553 | sec_size = symtab_hdr->sh_info; | |
4554 | sec_size *= sizeof (Elf_Internal_Sym); | |
4555 | local_syms = (Elf_Internal_Sym *) bfd_malloc (sec_size); | |
4556 | if (local_syms == NULL) | |
4557 | return false; | |
4558 | ||
4559 | all_local_syms[bfd_indx] = local_syms; | |
4560 | sec_size = symtab_hdr->sh_info; | |
4561 | sec_size *= sizeof (Elf64_External_Sym); | |
4562 | ext_syms = (Elf64_External_Sym *) bfd_malloc (sec_size); | |
4563 | if (ext_syms == NULL) | |
4564 | return false; | |
4565 | ||
4566 | if (bfd_seek (input_bfd, symtab_hdr->sh_offset, SEEK_SET) != 0 | |
4567 | || bfd_bread ((PTR) ext_syms, sec_size, input_bfd) != sec_size) | |
4568 | { | |
4569 | error_ret_free_ext_syms: | |
4570 | free (ext_syms); | |
4571 | return false; | |
4572 | } | |
4573 | ||
4574 | shndx_buf = NULL; | |
4575 | shndx_hdr = &elf_tdata (input_bfd)->symtab_shndx_hdr; | |
4576 | if (shndx_hdr->sh_size != 0) | |
4577 | { | |
4578 | sec_size = symtab_hdr->sh_info; | |
4579 | sec_size *= sizeof (Elf_External_Sym_Shndx); | |
4580 | shndx_buf = (Elf_External_Sym_Shndx *) bfd_malloc (sec_size); | |
4581 | if (shndx_buf == NULL) | |
4582 | goto error_ret_free_ext_syms; | |
4583 | ||
4584 | if (bfd_seek (input_bfd, shndx_hdr->sh_offset, SEEK_SET) != 0 | |
4585 | || bfd_bread ((PTR) shndx_buf, sec_size, input_bfd) != sec_size) | |
4586 | { | |
4587 | free (shndx_buf); | |
4588 | goto error_ret_free_ext_syms; | |
4589 | } | |
4590 | } | |
4591 | ||
4592 | /* Swap the local symbols in. */ | |
4593 | for (esym = ext_syms, end_sy = esym + symtab_hdr->sh_info, | |
4594 | isym = local_syms, shndx = shndx_buf; | |
4595 | esym < end_sy; | |
4596 | esym++, isym++, shndx = (shndx ? shndx + 1 : NULL)) | |
f8ecb12b AM |
4597 | bfd_elf64_swap_symbol_in (input_bfd, (const PTR) esym, |
4598 | (const PTR) shndx, isym); | |
721956f4 AM |
4599 | |
4600 | /* Now we can free the external symbols. */ | |
4601 | free (shndx_buf); | |
4602 | free (ext_syms); | |
5bd4f169 | 4603 | } |
721956f4 | 4604 | |
5d1634d7 AM |
4605 | return true; |
4606 | } | |
5bd4f169 | 4607 | |
721956f4 AM |
4608 | /* Determine and set the size of the stub section for a final link. |
4609 | ||
4610 | The basic idea here is to examine all the relocations looking for | |
4611 | PC-relative calls to a target that is unreachable with a "bl" | |
4612 | instruction. */ | |
4613 | ||
4614 | boolean | |
4615 | ppc64_elf_size_stubs (output_bfd, stub_bfd, info, group_size, | |
4616 | add_stub_section, layout_sections_again) | |
4617 | bfd *output_bfd; | |
4618 | bfd *stub_bfd; | |
4619 | struct bfd_link_info *info; | |
4620 | bfd_signed_vma group_size; | |
4621 | asection * (*add_stub_section) PARAMS ((const char *, asection *)); | |
4622 | void (*layout_sections_again) PARAMS ((void)); | |
4623 | { | |
4624 | bfd_size_type stub_group_size; | |
4625 | boolean stubs_always_before_branch; | |
4626 | boolean ret = false; | |
4627 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
4628 | ||
4629 | /* Stash our params away. */ | |
4630 | htab->stub_bfd = stub_bfd; | |
4631 | htab->add_stub_section = add_stub_section; | |
4632 | htab->layout_sections_again = layout_sections_again; | |
4633 | stubs_always_before_branch = group_size < 0; | |
4634 | if (group_size < 0) | |
4635 | stub_group_size = -group_size; | |
4636 | else | |
4637 | stub_group_size = group_size; | |
4638 | if (stub_group_size == 1) | |
4639 | { | |
4640 | /* Default values. */ | |
4641 | stub_group_size = 30720000; | |
4642 | if (htab->has_14bit_branch) | |
4643 | stub_group_size = 30000; | |
4644 | } | |
4645 | ||
4646 | group_sections (htab, stub_group_size, stubs_always_before_branch); | |
4647 | ||
4648 | if (! get_local_syms (info->input_bfds, htab)) | |
4649 | { | |
4650 | if (htab->all_local_syms) | |
4651 | goto error_ret_free_local; | |
4652 | return false; | |
4653 | } | |
4654 | ||
4655 | while (1) | |
4656 | { | |
4657 | bfd *input_bfd; | |
4658 | unsigned int bfd_indx; | |
4659 | asection *stub_sec; | |
4660 | boolean stub_changed; | |
4661 | ||
4662 | htab->stub_iteration += 1; | |
4663 | stub_changed = false; | |
4664 | ||
4665 | for (input_bfd = info->input_bfds, bfd_indx = 0; | |
4666 | input_bfd != NULL; | |
4667 | input_bfd = input_bfd->link_next, bfd_indx++) | |
4668 | { | |
4669 | Elf_Internal_Shdr *symtab_hdr; | |
4670 | asection *section; | |
4671 | Elf_Internal_Sym *local_syms; | |
4672 | ||
4673 | /* We'll need the symbol table in a second. */ | |
4674 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
4675 | if (symtab_hdr->sh_info == 0) | |
4676 | continue; | |
4677 | ||
4678 | local_syms = htab->all_local_syms[bfd_indx]; | |
4679 | ||
4680 | /* Walk over each section attached to the input bfd. */ | |
4681 | for (section = input_bfd->sections; | |
4682 | section != NULL; | |
4683 | section = section->next) | |
4684 | { | |
4685 | Elf_Internal_Shdr *input_rel_hdr; | |
4686 | Elf64_External_Rela *external_relocs, *erelaend, *erela; | |
4687 | Elf_Internal_Rela *internal_relocs, *irelaend, *irela; | |
4688 | bfd_size_type amt; | |
4689 | ||
4690 | /* If there aren't any relocs, then there's nothing more | |
4691 | to do. */ | |
4692 | if ((section->flags & SEC_RELOC) == 0 | |
4693 | || section->reloc_count == 0) | |
4694 | continue; | |
4695 | ||
4696 | /* If this section is a link-once section that will be | |
4697 | discarded, then don't create any stubs. */ | |
4698 | if (section->output_section == NULL | |
4699 | || section->output_section->owner != output_bfd) | |
4700 | continue; | |
4701 | ||
4702 | /* Allocate space for the external relocations. */ | |
4703 | amt = section->reloc_count; | |
4704 | amt *= sizeof (Elf64_External_Rela); | |
4705 | external_relocs = (Elf64_External_Rela *) bfd_malloc (amt); | |
4706 | if (external_relocs == NULL) | |
4707 | { | |
4708 | goto error_ret_free_local; | |
4709 | } | |
4710 | ||
4711 | /* Likewise for the internal relocations. */ | |
4712 | amt = section->reloc_count; | |
4713 | amt *= sizeof (Elf_Internal_Rela); | |
4714 | internal_relocs = (Elf_Internal_Rela *) bfd_malloc (amt); | |
4715 | if (internal_relocs == NULL) | |
4716 | { | |
4717 | free (external_relocs); | |
4718 | goto error_ret_free_local; | |
4719 | } | |
4720 | ||
4721 | /* Read in the external relocs. */ | |
4722 | input_rel_hdr = &elf_section_data (section)->rel_hdr; | |
4723 | if (bfd_seek (input_bfd, input_rel_hdr->sh_offset, SEEK_SET) != 0 | |
4724 | || bfd_bread ((PTR) external_relocs, | |
4725 | input_rel_hdr->sh_size, | |
4726 | input_bfd) != input_rel_hdr->sh_size) | |
4727 | { | |
4728 | free (external_relocs); | |
4729 | error_ret_free_internal: | |
4730 | free (internal_relocs); | |
4731 | goto error_ret_free_local; | |
4732 | } | |
4733 | ||
4734 | /* Swap in the relocs. */ | |
4735 | erela = external_relocs; | |
4736 | erelaend = erela + section->reloc_count; | |
4737 | irela = internal_relocs; | |
4738 | for (; erela < erelaend; erela++, irela++) | |
4739 | bfd_elf64_swap_reloca_in (input_bfd, erela, irela); | |
4740 | ||
4741 | /* We're done with the external relocs, free them. */ | |
4742 | free (external_relocs); | |
4743 | ||
4744 | /* Now examine each relocation. */ | |
4745 | irela = internal_relocs; | |
4746 | irelaend = irela + section->reloc_count; | |
4747 | for (; irela < irelaend; irela++) | |
4748 | { | |
4749 | unsigned int r_type, r_indx; | |
4750 | enum ppc_stub_type stub_type; | |
4751 | struct ppc_stub_hash_entry *stub_entry; | |
4752 | asection *sym_sec; | |
4753 | bfd_vma sym_value; | |
4754 | bfd_vma destination; | |
4755 | struct ppc_link_hash_entry *hash; | |
4756 | char *stub_name; | |
4757 | const asection *id_sec; | |
4758 | ||
4759 | r_type = ELF64_R_TYPE (irela->r_info); | |
4760 | r_indx = ELF64_R_SYM (irela->r_info); | |
4761 | ||
4762 | if (r_type >= (unsigned int) R_PPC_max) | |
4763 | { | |
4764 | bfd_set_error (bfd_error_bad_value); | |
4765 | goto error_ret_free_internal; | |
4766 | } | |
4767 | ||
4768 | /* Only look for stubs on branch instructions. */ | |
4769 | if (r_type != (unsigned int) R_PPC64_REL24 | |
4770 | && r_type != (unsigned int) R_PPC64_REL14 | |
4771 | && r_type != (unsigned int) R_PPC64_REL14_BRTAKEN | |
4772 | && r_type != (unsigned int) R_PPC64_REL14_BRNTAKEN) | |
4773 | continue; | |
4774 | ||
4775 | /* Now determine the call target, its name, value, | |
4776 | section. */ | |
4777 | sym_sec = NULL; | |
4778 | sym_value = 0; | |
4779 | destination = 0; | |
4780 | hash = NULL; | |
4781 | if (r_indx < symtab_hdr->sh_info) | |
4782 | { | |
4783 | /* It's a local symbol. */ | |
4784 | Elf_Internal_Sym *sym; | |
4785 | Elf_Internal_Shdr *hdr; | |
4786 | ||
4787 | sym = local_syms + r_indx; | |
4788 | hdr = elf_elfsections (input_bfd)[sym->st_shndx]; | |
4789 | sym_sec = hdr->bfd_section; | |
4790 | if (ELF_ST_TYPE (sym->st_info) != STT_SECTION) | |
4791 | sym_value = sym->st_value; | |
4792 | destination = (sym_value + irela->r_addend | |
4793 | + sym_sec->output_offset | |
4794 | + sym_sec->output_section->vma); | |
4795 | } | |
4796 | else | |
4797 | { | |
4798 | /* It's an external symbol. */ | |
4799 | int e_indx; | |
4800 | ||
4801 | e_indx = r_indx - symtab_hdr->sh_info; | |
4802 | hash = ((struct ppc_link_hash_entry *) | |
4803 | elf_sym_hashes (input_bfd)[e_indx]); | |
4804 | ||
4805 | while (hash->elf.root.type == bfd_link_hash_indirect | |
4806 | || hash->elf.root.type == bfd_link_hash_warning) | |
4807 | hash = ((struct ppc_link_hash_entry *) | |
4808 | hash->elf.root.u.i.link); | |
4809 | ||
4810 | if (hash->elf.root.type == bfd_link_hash_defined | |
4811 | || hash->elf.root.type == bfd_link_hash_defweak) | |
4812 | { | |
4813 | sym_sec = hash->elf.root.u.def.section; | |
4814 | sym_value = hash->elf.root.u.def.value; | |
4815 | if (sym_sec->output_section != NULL) | |
4816 | destination = (sym_value + irela->r_addend | |
4817 | + sym_sec->output_offset | |
4818 | + sym_sec->output_section->vma); | |
4819 | } | |
4820 | else if (hash->elf.root.type == bfd_link_hash_undefweak) | |
4821 | ; | |
4822 | else if (hash->elf.root.type == bfd_link_hash_undefined) | |
4823 | ; | |
4824 | else | |
4825 | { | |
4826 | bfd_set_error (bfd_error_bad_value); | |
4827 | goto error_ret_free_internal; | |
4828 | } | |
4829 | } | |
4830 | ||
4831 | /* Determine what (if any) linker stub is needed. */ | |
4832 | stub_type = ppc_type_of_stub (section, irela, &hash, | |
4833 | destination); | |
4834 | if (stub_type == ppc_stub_none) | |
4835 | continue; | |
4836 | ||
4837 | /* Support for grouping stub sections. */ | |
4838 | id_sec = htab->stub_group[section->id].link_sec; | |
4839 | ||
4840 | /* Get the name of this stub. */ | |
4841 | stub_name = ppc_stub_name (id_sec, sym_sec, hash, irela); | |
4842 | if (!stub_name) | |
4843 | goto error_ret_free_internal; | |
4844 | ||
4845 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, | |
4846 | stub_name, false, false); | |
4847 | if (stub_entry != NULL) | |
4848 | { | |
4849 | /* The proper stub has already been created. */ | |
4850 | free (stub_name); | |
4851 | continue; | |
4852 | } | |
4853 | ||
4854 | stub_entry = ppc_add_stub (stub_name, section, htab); | |
4855 | if (stub_entry == NULL) | |
4856 | { | |
4857 | free (stub_name); | |
4858 | goto error_ret_free_local; | |
4859 | } | |
4860 | ||
4861 | stub_entry->target_value = sym_value; | |
4862 | stub_entry->target_section = sym_sec; | |
4863 | stub_entry->stub_type = stub_type; | |
4864 | stub_entry->h = hash; | |
4865 | stub_changed = true; | |
4866 | } | |
4867 | ||
4868 | /* We're done with the internal relocs, free them. */ | |
4869 | free (internal_relocs); | |
4870 | } | |
4871 | } | |
4872 | ||
4873 | if (!stub_changed) | |
4874 | break; | |
4875 | ||
4876 | /* OK, we've added some stubs. Find out the new size of the | |
4877 | stub sections. */ | |
4878 | for (stub_sec = htab->stub_bfd->sections; | |
4879 | stub_sec != NULL; | |
4880 | stub_sec = stub_sec->next) | |
4881 | { | |
4882 | stub_sec->_raw_size = 0; | |
4883 | stub_sec->_cooked_size = 0; | |
4884 | } | |
4885 | htab->sbrlt->_raw_size = 0; | |
4886 | htab->sbrlt->_cooked_size = 0; | |
4887 | ||
4888 | bfd_hash_traverse (&htab->stub_hash_table, ppc_size_one_stub, htab); | |
4889 | ||
4890 | /* Ask the linker to do its stuff. */ | |
4891 | (*htab->layout_sections_again) (); | |
4892 | } | |
4893 | ||
afbe61cf AM |
4894 | /* It would be nice to strip .branch_lt from the output if the |
4895 | section is empty, but it's too late. If we strip sections here, | |
4896 | the dynamic symbol table is corrupted since the section symbol | |
4897 | for the stripped section isn't written. */ | |
721956f4 AM |
4898 | |
4899 | ret = true; | |
4900 | ||
4901 | error_ret_free_local: | |
4902 | while (htab->bfd_count-- > 0) | |
4903 | if (htab->all_local_syms[htab->bfd_count]) | |
4904 | free (htab->all_local_syms[htab->bfd_count]); | |
4905 | free (htab->all_local_syms); | |
4906 | ||
4907 | return ret; | |
4908 | } | |
4909 | ||
4910 | /* Called after we have determined section placement. If sections | |
805fc799 | 4911 | move, we'll be called again. Provide a value for TOCstart. */ |
721956f4 | 4912 | |
805fc799 AM |
4913 | bfd_vma |
4914 | ppc64_elf_toc (obfd) | |
5d1634d7 | 4915 | bfd *obfd; |
721956f4 | 4916 | { |
805fc799 AM |
4917 | asection *s; |
4918 | bfd_vma TOCstart; | |
721956f4 | 4919 | |
805fc799 AM |
4920 | /* The TOC consists of sections .got, .toc, .tocbss, .plt in that |
4921 | order. The TOC starts where the first of these sections starts. */ | |
4922 | s = bfd_get_section_by_name (obfd, ".got"); | |
4923 | if (s == NULL) | |
4924 | s = bfd_get_section_by_name (obfd, ".toc"); | |
4925 | if (s == NULL) | |
4926 | s = bfd_get_section_by_name (obfd, ".tocbss"); | |
4927 | if (s == NULL) | |
4928 | s = bfd_get_section_by_name (obfd, ".plt"); | |
4929 | if (s == NULL) | |
4930 | { | |
4931 | /* This may happen for | |
4932 | o references to TOC base (SYM@toc / TOC[tc0]) without a | |
4933 | .toc directive | |
4934 | o bad linker script | |
4935 | o --gc-sections and empty TOC sections | |
4936 | ||
4937 | FIXME: Warn user? */ | |
4938 | ||
4939 | /* Look for a likely section. We probably won't even be | |
4940 | using TOCstart. */ | |
4941 | for (s = obfd->sections; s != NULL; s = s->next) | |
4942 | if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY)) | |
4943 | == (SEC_ALLOC | SEC_SMALL_DATA)) | |
4944 | break; | |
721956f4 | 4945 | if (s == NULL) |
805fc799 AM |
4946 | for (s = obfd->sections; s != NULL; s = s->next) |
4947 | if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA)) | |
4948 | == (SEC_ALLOC | SEC_SMALL_DATA)) | |
4949 | break; | |
721956f4 | 4950 | if (s == NULL) |
805fc799 AM |
4951 | for (s = obfd->sections; s != NULL; s = s->next) |
4952 | if ((s->flags & (SEC_ALLOC | SEC_READONLY)) == SEC_ALLOC) | |
4953 | break; | |
721956f4 | 4954 | if (s == NULL) |
805fc799 AM |
4955 | for (s = obfd->sections; s != NULL; s = s->next) |
4956 | if ((s->flags & SEC_ALLOC) == SEC_ALLOC) | |
4957 | break; | |
4958 | } | |
721956f4 | 4959 | |
805fc799 AM |
4960 | TOCstart = 0; |
4961 | if (s != NULL) | |
4962 | TOCstart = s->output_section->vma + s->output_offset; | |
721956f4 | 4963 | |
805fc799 | 4964 | return TOCstart; |
721956f4 AM |
4965 | } |
4966 | ||
4967 | /* Build all the stubs associated with the current output file. | |
4968 | The stubs are kept in a hash table attached to the main linker | |
4969 | hash table. This function is called via gldelf64ppc_finish. */ | |
4970 | ||
4971 | boolean | |
4972 | ppc64_elf_build_stubs (info) | |
4973 | struct bfd_link_info *info; | |
5d1634d7 AM |
4974 | { |
4975 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
721956f4 | 4976 | asection *stub_sec; |
5d1634d7 AM |
4977 | bfd_vma plt_r2; |
4978 | bfd_byte *p; | |
4979 | ||
721956f4 AM |
4980 | for (stub_sec = htab->stub_bfd->sections; |
4981 | stub_sec != NULL; | |
4982 | stub_sec = stub_sec->next) | |
4983 | { | |
4984 | bfd_size_type size; | |
4985 | ||
4986 | /* Allocate memory to hold the linker stubs. */ | |
4987 | size = stub_sec->_raw_size; | |
4988 | if (size != 0) | |
4989 | { | |
4990 | stub_sec->contents = (bfd_byte *) bfd_zalloc (htab->stub_bfd, size); | |
4991 | if (stub_sec->contents == NULL) | |
4992 | return false; | |
4993 | } | |
4994 | stub_sec->_cooked_size = 0; | |
4995 | } | |
5d1634d7 | 4996 | |
721956f4 | 4997 | if (htab->splt != NULL) |
5d1634d7 | 4998 | { |
721956f4 AM |
4999 | /* Build the .glink plt call stub. */ |
5000 | plt_r2 = (htab->splt->output_offset | |
5001 | + htab->splt->output_section->vma | |
5002 | - elf_gp (htab->splt->output_section->owner) | |
5003 | - TOC_BASE_OFF); | |
5004 | p = htab->sglink->contents; | |
5005 | p = build_plt_stub (htab->sglink->owner, p, (int) plt_r2, 1); | |
5006 | while (p - htab->sglink->contents < GLINK_CALL_STUB_SIZE) | |
5007 | { | |
5008 | bfd_put_32 (htab->sglink->owner, NOP, p); | |
5009 | p += 4; | |
5010 | } | |
5011 | htab->sglink->_cooked_size = p - htab->sglink->contents; | |
5012 | ||
5013 | /* Use reloc_count to count entries. */ | |
5014 | htab->sglink->reloc_count = 0; | |
5d1634d7 | 5015 | } |
5d1634d7 | 5016 | |
721956f4 AM |
5017 | if (htab->sbrlt->_raw_size != 0) |
5018 | { | |
5019 | htab->sbrlt->contents = (bfd_byte *) bfd_zalloc (htab->sbrlt->owner, | |
5020 | htab->sbrlt->_raw_size); | |
5021 | if (htab->sbrlt->contents == NULL) | |
5022 | return false; | |
5023 | } | |
5d1634d7 | 5024 | |
721956f4 AM |
5025 | /* Build the stubs as directed by the stub hash table. */ |
5026 | bfd_hash_traverse (&htab->stub_hash_table, ppc_build_one_stub, info); | |
5d1634d7 AM |
5027 | htab->sglink->reloc_count = 0; |
5028 | ||
721956f4 AM |
5029 | for (stub_sec = htab->stub_bfd->sections; |
5030 | stub_sec != NULL; | |
5031 | stub_sec = stub_sec->next) | |
5032 | { | |
5033 | if (stub_sec->_raw_size != stub_sec->_cooked_size) | |
5034 | break; | |
5035 | } | |
5d1634d7 | 5036 | |
721956f4 | 5037 | if (stub_sec != NULL |
5d1634d7 AM |
5038 | || htab->sglink->_raw_size != htab->sglink->_cooked_size) |
5039 | { | |
721956f4 AM |
5040 | htab->stub_error = true; |
5041 | (*_bfd_error_handler) (_("stubs don't match calculated size")); | |
5d1634d7 | 5042 | } |
721956f4 AM |
5043 | |
5044 | return !htab->stub_error; | |
5bd4f169 AM |
5045 | } |
5046 | ||
5047 | /* Set up any other section flags and such that may be necessary. */ | |
5048 | ||
5049 | static boolean | |
5050 | ppc64_elf_fake_sections (abfd, shdr, asect) | |
5051 | bfd *abfd ATTRIBUTE_UNUSED; | |
5052 | Elf64_Internal_Shdr *shdr; | |
5053 | asection *asect; | |
5054 | { | |
5055 | if ((asect->flags & SEC_EXCLUDE) != 0) | |
5056 | shdr->sh_flags |= SHF_EXCLUDE; | |
5057 | ||
5058 | if ((asect->flags & SEC_SORT_ENTRIES) != 0) | |
5059 | shdr->sh_type = SHT_ORDERED; | |
5060 | ||
5061 | return true; | |
5062 | } | |
5063 | ||
5064 | /* The RELOCATE_SECTION function is called by the ELF backend linker | |
5065 | to handle the relocations for a section. | |
5066 | ||
5067 | The relocs are always passed as Rela structures; if the section | |
5068 | actually uses Rel structures, the r_addend field will always be | |
5069 | zero. | |
5070 | ||
5071 | This function is responsible for adjust the section contents as | |
5072 | necessary, and (if using Rela relocs and generating a | |
5073 | relocateable output file) adjusting the reloc addend as | |
5074 | necessary. | |
5075 | ||
5076 | This function does not have to worry about setting the reloc | |
5077 | address or the reloc symbol index. | |
5078 | ||
5079 | LOCAL_SYMS is a pointer to the swapped in local symbols. | |
5080 | ||
5081 | LOCAL_SECTIONS is an array giving the section in the input file | |
5082 | corresponding to the st_shndx field of each local symbol. | |
5083 | ||
5084 | The global hash table entry for the global symbols can be found | |
5085 | via elf_sym_hashes (input_bfd). | |
5086 | ||
5087 | When generating relocateable output, this function must handle | |
5088 | STB_LOCAL/STT_SECTION symbols specially. The output symbol is | |
5089 | going to be the section symbol corresponding to the output | |
5090 | section, which means that the addend must be adjusted | |
5091 | accordingly. */ | |
5092 | ||
5093 | static boolean | |
5094 | ppc64_elf_relocate_section (output_bfd, info, input_bfd, input_section, | |
5095 | contents, relocs, local_syms, local_sections) | |
5096 | bfd *output_bfd; | |
5097 | struct bfd_link_info *info; | |
5098 | bfd *input_bfd; | |
5099 | asection *input_section; | |
5100 | bfd_byte *contents; | |
5101 | Elf_Internal_Rela *relocs; | |
5102 | Elf_Internal_Sym *local_syms; | |
5103 | asection **local_sections; | |
5104 | { | |
65f38f15 | 5105 | struct ppc_link_hash_table *htab; |
5bd4f169 AM |
5106 | Elf_Internal_Shdr *symtab_hdr; |
5107 | struct elf_link_hash_entry **sym_hashes; | |
5bd4f169 AM |
5108 | Elf_Internal_Rela *rel; |
5109 | Elf_Internal_Rela *relend; | |
5bd4f169 AM |
5110 | bfd_vma *local_got_offsets; |
5111 | bfd_vma TOCstart; | |
5112 | boolean ret = true; | |
41bd81ab | 5113 | boolean is_opd; |
96e0dda4 AM |
5114 | /* Disabled until we sort out how ld should choose 'y' vs 'at'. */ |
5115 | boolean is_power4 = false; | |
5bd4f169 | 5116 | |
b491616a AM |
5117 | if (info->relocateable) |
5118 | return true; | |
5119 | ||
65f38f15 | 5120 | /* Initialize howto table if needed. */ |
5bd4f169 | 5121 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) |
5bd4f169 AM |
5122 | ppc_howto_init (); |
5123 | ||
65f38f15 | 5124 | htab = ppc_hash_table (info); |
5bd4f169 | 5125 | local_got_offsets = elf_local_got_offsets (input_bfd); |
5bd4f169 | 5126 | TOCstart = elf_gp (output_bfd); |
5bd4f169 AM |
5127 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; |
5128 | sym_hashes = elf_sym_hashes (input_bfd); | |
41bd81ab | 5129 | is_opd = strcmp (bfd_get_section_name (abfd, input_section), ".opd") == 0; |
65f38f15 | 5130 | |
5bd4f169 AM |
5131 | rel = relocs; |
5132 | relend = relocs + input_section->reloc_count; | |
5133 | for (; rel < relend; rel++) | |
5134 | { | |
5135 | enum elf_ppc_reloc_type r_type; | |
5136 | bfd_vma offset; | |
5137 | bfd_vma addend; | |
5138 | bfd_reloc_status_type r; | |
5139 | Elf_Internal_Sym *sym; | |
5140 | asection *sec; | |
5141 | struct elf_link_hash_entry *h; | |
721956f4 | 5142 | struct elf_link_hash_entry *fdh; |
5bd4f169 | 5143 | const char *sym_name; |
5bd4f169 AM |
5144 | unsigned long r_symndx; |
5145 | bfd_vma relocation; | |
65f38f15 | 5146 | boolean unresolved_reloc; |
ef60b7ff | 5147 | boolean warned; |
dc810e39 | 5148 | long insn; |
721956f4 AM |
5149 | struct ppc_stub_hash_entry *stub_entry; |
5150 | bfd_vma max_br_offset; | |
5151 | bfd_vma from; | |
5bd4f169 AM |
5152 | |
5153 | r_type = (enum elf_ppc_reloc_type) ELF64_R_TYPE (rel->r_info); | |
5bd4f169 | 5154 | r_symndx = ELF64_R_SYM (rel->r_info); |
65f38f15 AM |
5155 | offset = rel->r_offset; |
5156 | addend = rel->r_addend; | |
5157 | r = bfd_reloc_other; | |
5158 | sym = (Elf_Internal_Sym *) 0; | |
5159 | sec = (asection *) 0; | |
5160 | h = (struct elf_link_hash_entry *) 0; | |
5161 | sym_name = (const char *) 0; | |
5162 | unresolved_reloc = false; | |
ef60b7ff | 5163 | warned = false; |
65f38f15 | 5164 | |
5bd4f169 AM |
5165 | if (r_type == R_PPC64_TOC) |
5166 | { | |
5167 | /* Relocation value is TOC base. Symbol is ignored. */ | |
5168 | relocation = TOCstart + TOC_BASE_OFF; | |
5169 | } | |
5170 | else if (r_symndx < symtab_hdr->sh_info) | |
5171 | { | |
5172 | /* It's a local symbol. */ | |
5173 | sym = local_syms + r_symndx; | |
5174 | sec = local_sections[r_symndx]; | |
5175 | sym_name = "<local symbol>"; | |
5176 | ||
f8df10f4 | 5177 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, sec, rel); |
f46c2da6 AM |
5178 | /* rel may have changed, update our copy of addend. */ |
5179 | addend = rel->r_addend; | |
5bd4f169 AM |
5180 | } |
5181 | else | |
5182 | { | |
5183 | /* It's a global symbol. */ | |
5184 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
5185 | while (h->root.type == bfd_link_hash_indirect | |
5186 | || h->root.type == bfd_link_hash_warning) | |
5187 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
5188 | sym_name = h->root.root.string; | |
65f38f15 | 5189 | relocation = 0; |
5bd4f169 AM |
5190 | if (h->root.type == bfd_link_hash_defined |
5191 | || h->root.type == bfd_link_hash_defweak) | |
5192 | { | |
5193 | sec = h->root.u.def.section; | |
65f38f15 AM |
5194 | if (sec->output_section == NULL) |
5195 | /* Set a flag that will be cleared later if we find a | |
5196 | relocation value for this symbol. output_section | |
5197 | is typically NULL for symbols satisfied by a shared | |
5198 | library. */ | |
5199 | unresolved_reloc = true; | |
5bd4f169 AM |
5200 | else |
5201 | relocation = (h->root.u.def.value | |
5202 | + sec->output_section->vma | |
5203 | + sec->output_offset); | |
5204 | } | |
5205 | else if (h->root.type == bfd_link_hash_undefweak) | |
65f38f15 | 5206 | ; |
671bae9c | 5207 | else if (info->shared |
65f38f15 AM |
5208 | && (!info->symbolic || info->allow_shlib_undefined) |
5209 | && !info->no_undefined | |
5210 | && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT) | |
5211 | ; | |
5bd4f169 AM |
5212 | else |
5213 | { | |
5214 | if (! ((*info->callbacks->undefined_symbol) | |
5215 | (info, h->root.root.string, input_bfd, input_section, | |
65f38f15 AM |
5216 | offset, (!info->shared |
5217 | || info->no_undefined | |
5218 | || ELF_ST_VISIBILITY (h->other))))) | |
5bd4f169 | 5219 | return false; |
ef60b7ff | 5220 | warned = true; |
5bd4f169 AM |
5221 | } |
5222 | } | |
5223 | ||
65f38f15 | 5224 | /* First handle relocations that tweak non-addend part of insn. */ |
86c76c7b | 5225 | insn = 0; |
65f38f15 | 5226 | switch (r_type) |
5bd4f169 AM |
5227 | { |
5228 | default: | |
65f38f15 | 5229 | break; |
5bd4f169 | 5230 | |
65f38f15 AM |
5231 | /* Branch taken prediction relocations. */ |
5232 | case R_PPC64_ADDR14_BRTAKEN: | |
5233 | case R_PPC64_REL14_BRTAKEN: | |
cedb70c5 KH |
5234 | insn = 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */ |
5235 | /* Fall thru. */ | |
65f38f15 | 5236 | |
86c76c7b | 5237 | /* Branch not taken prediction relocations. */ |
65f38f15 AM |
5238 | case R_PPC64_ADDR14_BRNTAKEN: |
5239 | case R_PPC64_REL14_BRNTAKEN: | |
86c76c7b | 5240 | insn |= bfd_get_32 (output_bfd, contents + offset) & ~(0x01 << 21); |
96e0dda4 AM |
5241 | if (is_power4) |
5242 | { | |
5243 | /* Set 'a' bit. This is 0b00010 in BO field for branch | |
5244 | on CR(BI) insns (BO == 001at or 011at), and 0b01000 | |
5245 | for branch on CTR insns (BO == 1a00t or 1a01t). */ | |
5246 | if ((insn & (0x14 << 21)) == (0x04 << 21)) | |
5247 | insn |= 0x02 << 21; | |
5248 | else if ((insn & (0x14 << 21)) == (0x10 << 21)) | |
5249 | insn |= 0x08 << 21; | |
5250 | else | |
5251 | break; | |
5252 | } | |
65f38f15 | 5253 | else |
96e0dda4 | 5254 | { |
805fc799 AM |
5255 | from = (offset |
5256 | + input_section->output_offset | |
5257 | + input_section->output_section->vma); | |
5258 | ||
96e0dda4 | 5259 | /* Invert 'y' bit if not the default. */ |
805fc799 | 5260 | if ((bfd_signed_vma) (relocation + addend - from) < 0) |
96e0dda4 AM |
5261 | insn ^= 0x01 << 21; |
5262 | } | |
86c76c7b | 5263 | |
65f38f15 AM |
5264 | bfd_put_32 (output_bfd, (bfd_vma) insn, contents + offset); |
5265 | break; | |
5bd4f169 | 5266 | |
65f38f15 | 5267 | case R_PPC64_REL24: |
721956f4 AM |
5268 | /* A REL24 branching to a linkage function is followed by a |
5269 | nop. We replace the nop with a ld in order to restore | |
5270 | the TOC base pointer. Only calls to shared objects need | |
5271 | to alter the TOC base. These are recognized by their | |
5272 | need for a PLT entry. */ | |
5bd4f169 | 5273 | if (h != NULL |
721956f4 AM |
5274 | && (fdh = ((struct ppc_link_hash_entry *) h)->oh) != NULL |
5275 | && fdh->plt.offset != (bfd_vma) -1 | |
5276 | && (stub_entry = ppc_get_stub_entry (input_section, sec, fdh, | |
5277 | rel, htab)) != NULL) | |
41bd81ab | 5278 | { |
721956f4 AM |
5279 | boolean can_plt_call = 0; |
5280 | ||
41bd81ab AM |
5281 | if (offset + 8 <= input_section->_cooked_size) |
5282 | { | |
721956f4 AM |
5283 | insn = bfd_get_32 (input_bfd, contents + offset + 4); |
5284 | if (insn == NOP | |
5285 | || insn == CROR_151515 || insn == CROR_313131) | |
41bd81ab | 5286 | { |
721956f4 AM |
5287 | bfd_put_32 (input_bfd, (bfd_vma) LD_R2_40R1, |
5288 | contents + offset + 4); | |
5289 | can_plt_call = 1; | |
41bd81ab | 5290 | } |
5bd4f169 | 5291 | } |
721956f4 AM |
5292 | |
5293 | if (!can_plt_call) | |
5294 | { | |
5295 | /* If this is a plain branch rather than a branch | |
5296 | and link, don't require a nop. */ | |
5297 | insn = bfd_get_32 (input_bfd, contents + offset); | |
5298 | if ((insn & 1) == 0) | |
5299 | can_plt_call = 1; | |
5300 | } | |
5301 | ||
5302 | if (can_plt_call) | |
5303 | { | |
5304 | relocation = (stub_entry->stub_offset | |
5305 | + stub_entry->stub_sec->output_offset | |
5306 | + stub_entry->stub_sec->output_section->vma); | |
5307 | addend = 0; | |
5308 | unresolved_reloc = false; | |
5309 | } | |
5bd4f169 | 5310 | } |
e86ce104 AM |
5311 | |
5312 | if (h != NULL | |
5313 | && h->root.type == bfd_link_hash_undefweak | |
721956f4 AM |
5314 | && relocation == 0 |
5315 | && addend == 0) | |
e86ce104 | 5316 | { |
721956f4 AM |
5317 | /* Tweak calls to undefined weak functions to point at a |
5318 | blr. We can thus call a weak function without first | |
5319 | checking whether the function is defined. We have a | |
5320 | blr at the end of .sfpr. */ | |
805fc799 | 5321 | BFD_ASSERT (htab->sfpr->_raw_size != 0); |
721956f4 AM |
5322 | relocation = (htab->sfpr->_raw_size - 4 |
5323 | + htab->sfpr->output_offset | |
5324 | + htab->sfpr->output_section->vma); | |
5325 | from = (offset | |
5326 | + input_section->output_offset | |
5327 | + input_section->output_section->vma); | |
805fc799 | 5328 | |
721956f4 AM |
5329 | /* But let's not be silly about it. If the blr isn't in |
5330 | reach, just go to the next instruction. */ | |
805fc799 AM |
5331 | if (relocation - from + (1 << 25) >= (1 << 26) |
5332 | || htab->sfpr->_raw_size == 0) | |
721956f4 | 5333 | relocation = from + 4; |
e86ce104 | 5334 | } |
65f38f15 AM |
5335 | break; |
5336 | } | |
5bd4f169 | 5337 | |
65f38f15 AM |
5338 | /* Set `addend'. */ |
5339 | switch (r_type) | |
5340 | { | |
5341 | default: | |
5342 | (*_bfd_error_handler) | |
5343 | (_("%s: unknown relocation type %d for symbol %s"), | |
5344 | bfd_archive_filename (input_bfd), (int) r_type, sym_name); | |
5bd4f169 | 5345 | |
65f38f15 AM |
5346 | bfd_set_error (bfd_error_bad_value); |
5347 | ret = false; | |
5348 | continue; | |
5bd4f169 | 5349 | |
65f38f15 AM |
5350 | case R_PPC64_NONE: |
5351 | case R_PPC_GNU_VTINHERIT: | |
5352 | case R_PPC_GNU_VTENTRY: | |
5353 | continue; | |
5bd4f169 AM |
5354 | |
5355 | /* GOT16 relocations. Like an ADDR16 using the symbol's | |
5356 | address in the GOT as relocation value instead of the | |
5357 | symbols value itself. Also, create a GOT entry for the | |
5358 | symbol and put the symbol value there. */ | |
65f38f15 AM |
5359 | case R_PPC64_GOT16: |
5360 | case R_PPC64_GOT16_LO: | |
5361 | case R_PPC64_GOT16_HI: | |
5362 | case R_PPC64_GOT16_HA: | |
5363 | case R_PPC64_GOT16_DS: | |
5364 | case R_PPC64_GOT16_LO_DS: | |
5bd4f169 AM |
5365 | { |
5366 | /* Relocation is to the entry for this symbol in the global | |
5367 | offset table. */ | |
5368 | bfd_vma off; | |
65f38f15 AM |
5369 | |
5370 | if (htab->sgot == NULL) | |
5371 | abort (); | |
5bd4f169 AM |
5372 | |
5373 | if (h != NULL) | |
5374 | { | |
65f38f15 | 5375 | boolean dyn; |
5bd4f169 | 5376 | |
65f38f15 AM |
5377 | off = h->got.offset; |
5378 | dyn = htab->elf.dynamic_sections_created; | |
5379 | if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info, h) | |
5bd4f169 | 5380 | || (info->shared |
65f38f15 AM |
5381 | && (info->symbolic |
5382 | || h->dynindx == -1 | |
5383 | || (h->elf_link_hash_flags | |
5384 | & ELF_LINK_FORCED_LOCAL)) | |
5bd4f169 AM |
5385 | && (h->elf_link_hash_flags |
5386 | & ELF_LINK_HASH_DEF_REGULAR))) | |
5387 | { | |
5388 | /* This is actually a static link, or it is a | |
5389 | -Bsymbolic link and the symbol is defined | |
65f38f15 AM |
5390 | locally, or the symbol was forced to be local |
5391 | because of a version file. We must initialize | |
5392 | this entry in the global offset table. Since the | |
5393 | offset must always be a multiple of 8, we use the | |
5394 | least significant bit to record whether we have | |
5bd4f169 AM |
5395 | initialized it already. |
5396 | ||
65f38f15 | 5397 | When doing a dynamic link, we create a .rel.got |
5bd4f169 AM |
5398 | relocation entry to initialize the value. This |
5399 | is done in the finish_dynamic_symbol routine. */ | |
5400 | if ((off & 1) != 0) | |
5401 | off &= ~1; | |
5402 | else | |
5403 | { | |
5404 | bfd_put_64 (output_bfd, relocation, | |
65f38f15 | 5405 | htab->sgot->contents + off); |
5bd4f169 AM |
5406 | h->got.offset |= 1; |
5407 | } | |
5408 | } | |
65f38f15 AM |
5409 | else |
5410 | unresolved_reloc = false; | |
5bd4f169 AM |
5411 | } |
5412 | else | |
5413 | { | |
65f38f15 AM |
5414 | if (local_got_offsets == NULL) |
5415 | abort (); | |
5bd4f169 AM |
5416 | |
5417 | off = local_got_offsets[r_symndx]; | |
5418 | ||
65f38f15 | 5419 | /* The offset must always be a multiple of 8. We use |
5bd4f169 AM |
5420 | the least significant bit to record whether we have |
5421 | already processed this entry. */ | |
5422 | if ((off & 1) != 0) | |
5423 | off &= ~1; | |
5424 | else | |
5425 | { | |
65f38f15 AM |
5426 | bfd_put_64 (output_bfd, relocation, |
5427 | htab->sgot->contents + off); | |
5bd4f169 AM |
5428 | |
5429 | if (info->shared) | |
5430 | { | |
5bd4f169 | 5431 | Elf_Internal_Rela outrel; |
65f38f15 | 5432 | Elf64_External_Rela *loc; |
5bd4f169 AM |
5433 | |
5434 | /* We need to generate a R_PPC64_RELATIVE reloc | |
5435 | for the dynamic linker. */ | |
65f38f15 AM |
5436 | outrel.r_offset = (htab->sgot->output_section->vma |
5437 | + htab->sgot->output_offset | |
5bd4f169 AM |
5438 | + off); |
5439 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
5440 | outrel.r_addend = relocation; | |
65f38f15 AM |
5441 | loc = (Elf64_External_Rela *) htab->srelgot->contents; |
5442 | loc += htab->srelgot->reloc_count++; | |
5443 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); | |
5bd4f169 AM |
5444 | } |
5445 | ||
5446 | local_got_offsets[r_symndx] |= 1; | |
5447 | } | |
5448 | } | |
5449 | ||
65f38f15 AM |
5450 | if (off >= (bfd_vma) -2) |
5451 | abort (); | |
5452 | ||
5453 | relocation = htab->sgot->output_offset + off; | |
5454 | ||
5bd4f169 AM |
5455 | /* TOC base (r2) is TOC start plus 0x8000. */ |
5456 | addend -= TOC_BASE_OFF; | |
5bd4f169 | 5457 | } |
65f38f15 AM |
5458 | break; |
5459 | ||
5460 | case R_PPC64_PLT16_HA: | |
5461 | case R_PPC64_PLT16_HI: | |
5462 | case R_PPC64_PLT16_LO: | |
5463 | case R_PPC64_PLT32: | |
5464 | case R_PPC64_PLT64: | |
5465 | /* Relocation is to the entry for this symbol in the | |
5466 | procedure linkage table. */ | |
5467 | ||
5468 | /* Resolve a PLT reloc against a local symbol directly, | |
5469 | without using the procedure linkage table. */ | |
5470 | if (h == NULL) | |
5471 | break; | |
5472 | ||
5473 | if (h->plt.offset == (bfd_vma) -1 | |
5474 | || htab->splt == NULL) | |
5475 | { | |
5476 | /* We didn't make a PLT entry for this symbol. This | |
5477 | happens when statically linking PIC code, or when | |
5478 | using -Bsymbolic. */ | |
5479 | break; | |
5480 | } | |
5481 | ||
5482 | relocation = (htab->splt->output_section->vma | |
5483 | + htab->splt->output_offset | |
5484 | + h->plt.offset); | |
5485 | unresolved_reloc = false; | |
5486 | break; | |
5bd4f169 AM |
5487 | |
5488 | /* TOC16 relocs. We want the offset relative to the TOC base, | |
5489 | which is the address of the start of the TOC plus 0x8000. | |
5490 | The TOC consists of sections .got, .toc, .tocbss, and .plt, | |
5491 | in this order. */ | |
65f38f15 AM |
5492 | case R_PPC64_TOC16: |
5493 | case R_PPC64_TOC16_LO: | |
5494 | case R_PPC64_TOC16_HI: | |
5495 | case R_PPC64_TOC16_DS: | |
5496 | case R_PPC64_TOC16_LO_DS: | |
5497 | case R_PPC64_TOC16_HA: | |
5bd4f169 | 5498 | addend -= TOCstart + TOC_BASE_OFF; |
5bd4f169 AM |
5499 | break; |
5500 | ||
5501 | /* Relocate against the beginning of the section. */ | |
65f38f15 AM |
5502 | case R_PPC64_SECTOFF: |
5503 | case R_PPC64_SECTOFF_LO: | |
5504 | case R_PPC64_SECTOFF_HI: | |
5505 | case R_PPC64_SECTOFF_DS: | |
5506 | case R_PPC64_SECTOFF_LO_DS: | |
5507 | case R_PPC64_SECTOFF_HA: | |
5508 | if (sec != (asection *) 0) | |
5509 | addend -= sec->output_section->vma; | |
5bd4f169 AM |
5510 | break; |
5511 | ||
721956f4 AM |
5512 | case R_PPC64_REL14: |
5513 | case R_PPC64_REL14_BRNTAKEN: | |
5514 | case R_PPC64_REL14_BRTAKEN: | |
5d1634d7 AM |
5515 | case R_PPC64_REL24: |
5516 | break; | |
5517 | ||
65f38f15 AM |
5518 | /* Relocations that may need to be propagated if this is a |
5519 | dynamic object. */ | |
65f38f15 AM |
5520 | case R_PPC64_REL32: |
5521 | case R_PPC64_REL64: | |
5522 | case R_PPC64_ADDR14: | |
5523 | case R_PPC64_ADDR14_BRNTAKEN: | |
5524 | case R_PPC64_ADDR14_BRTAKEN: | |
5525 | case R_PPC64_ADDR16: | |
5526 | case R_PPC64_ADDR16_DS: | |
5527 | case R_PPC64_ADDR16_HA: | |
5528 | case R_PPC64_ADDR16_HI: | |
5529 | case R_PPC64_ADDR16_HIGHER: | |
5530 | case R_PPC64_ADDR16_HIGHERA: | |
5531 | case R_PPC64_ADDR16_HIGHEST: | |
5532 | case R_PPC64_ADDR16_HIGHESTA: | |
5533 | case R_PPC64_ADDR16_LO: | |
5534 | case R_PPC64_ADDR16_LO_DS: | |
5535 | case R_PPC64_ADDR24: | |
5536 | case R_PPC64_ADDR30: | |
5537 | case R_PPC64_ADDR32: | |
5538 | case R_PPC64_ADDR64: | |
5539 | case R_PPC64_UADDR16: | |
5540 | case R_PPC64_UADDR32: | |
5541 | case R_PPC64_UADDR64: | |
ec338859 AM |
5542 | /* r_symndx will be zero only for relocs against symbols |
5543 | from removed linkonce sections, or sections discarded by | |
5544 | a linker script. */ | |
5d1634d7 AM |
5545 | if (r_symndx == 0) |
5546 | break; | |
5547 | /* Fall thru. */ | |
5548 | ||
5549 | case R_PPC64_TOC: | |
5550 | if ((input_section->flags & SEC_ALLOC) == 0) | |
ec338859 AM |
5551 | break; |
5552 | ||
41bd81ab AM |
5553 | if (NO_OPD_RELOCS && is_opd) |
5554 | break; | |
5555 | ||
65f38f15 | 5556 | if ((info->shared |
65f38f15 AM |
5557 | && (IS_ABSOLUTE_RELOC (r_type) |
5558 | || (h != NULL | |
5559 | && h->dynindx != -1 | |
5560 | && (! info->symbolic | |
5561 | || (h->elf_link_hash_flags | |
5562 | & ELF_LINK_HASH_DEF_REGULAR) == 0)))) | |
5563 | || (!info->shared | |
65f38f15 AM |
5564 | && h != NULL |
5565 | && h->dynindx != -1 | |
5566 | && (h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0 | |
5567 | && (((h->elf_link_hash_flags | |
5568 | & ELF_LINK_HASH_DEF_DYNAMIC) != 0 | |
5569 | && (h->elf_link_hash_flags | |
5570 | & ELF_LINK_HASH_DEF_REGULAR) == 0) | |
5571 | || h->root.type == bfd_link_hash_undefweak | |
5572 | || h->root.type == bfd_link_hash_undefined))) | |
5573 | { | |
5574 | Elf_Internal_Rela outrel; | |
5575 | boolean skip, relocate; | |
5576 | asection *sreloc; | |
5577 | Elf64_External_Rela *loc; | |
5578 | ||
5579 | /* When generating a dynamic object, these relocations | |
5580 | are copied into the output file to be resolved at run | |
5581 | time. */ | |
5582 | ||
5583 | skip = false; | |
0bb2d96a | 5584 | relocate = false; |
65f38f15 | 5585 | |
c629eae0 JJ |
5586 | outrel.r_offset = |
5587 | _bfd_elf_section_offset (output_bfd, info, input_section, | |
5588 | rel->r_offset); | |
5589 | if (outrel.r_offset == (bfd_vma) -1) | |
5590 | skip = true; | |
0bb2d96a JJ |
5591 | else if (outrel.r_offset == (bfd_vma) -2) |
5592 | skip = true, relocate = true; | |
65f38f15 AM |
5593 | outrel.r_offset += (input_section->output_section->vma |
5594 | + input_section->output_offset); | |
5595 | outrel.r_addend = addend; | |
5596 | ||
5597 | if (skip) | |
0bb2d96a | 5598 | memset (&outrel, 0, sizeof outrel); |
65f38f15 AM |
5599 | else if (h != NULL |
5600 | && h->dynindx != -1 | |
41bd81ab | 5601 | && !is_opd |
65f38f15 AM |
5602 | && (!IS_ABSOLUTE_RELOC (r_type) |
5603 | || !info->shared | |
5604 | || !info->symbolic | |
5605 | || (h->elf_link_hash_flags | |
5606 | & ELF_LINK_HASH_DEF_REGULAR) == 0)) | |
0bb2d96a | 5607 | outrel.r_info = ELF64_R_INFO (h->dynindx, r_type); |
65f38f15 AM |
5608 | else |
5609 | { | |
41bd81ab AM |
5610 | /* This symbol is local, or marked to become local, |
5611 | or this is an opd section reloc which must point | |
5612 | at a local function. */ | |
65f38f15 AM |
5613 | outrel.r_addend += relocation; |
5614 | relocate = true; | |
e86ce104 | 5615 | if (r_type == R_PPC64_ADDR64 || r_type == R_PPC64_TOC) |
65f38f15 | 5616 | { |
afbe61cf AM |
5617 | if (is_opd && h != NULL && info->shared) |
5618 | { | |
5619 | /* Lie about opd entries. This case occurs | |
5620 | when building shared libraries and we | |
5621 | reference a function in another shared | |
5622 | lib. In that case we won't use the opd | |
5623 | entry in this lib; We ought to edit the | |
5624 | opd section to remove unused entries. */ | |
5625 | unresolved_reloc = false; | |
5626 | } | |
65f38f15 AM |
5627 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); |
5628 | } | |
5629 | else | |
5630 | { | |
5631 | long indx = 0; | |
5632 | ||
41bd81ab | 5633 | if (bfd_is_abs_section (sec)) |
65f38f15 AM |
5634 | ; |
5635 | else if (sec == NULL || sec->owner == NULL) | |
5636 | { | |
5637 | bfd_set_error (bfd_error_bad_value); | |
5638 | return false; | |
5639 | } | |
5640 | else | |
5641 | { | |
5642 | asection *osec; | |
5643 | ||
5644 | osec = sec->output_section; | |
5645 | indx = elf_section_data (osec)->dynindx; | |
5646 | ||
5647 | /* We are turning this relocation into one | |
5648 | against a section symbol, so subtract out | |
5649 | the output section's address but not the | |
5650 | offset of the input section in the output | |
5651 | section. */ | |
5652 | outrel.r_addend -= osec->vma; | |
5653 | } | |
5654 | ||
5655 | outrel.r_info = ELF64_R_INFO (indx, r_type); | |
5656 | } | |
5657 | } | |
5658 | ||
5659 | sreloc = elf_section_data (input_section)->sreloc; | |
5660 | if (sreloc == NULL) | |
5661 | abort (); | |
5662 | ||
5663 | loc = (Elf64_External_Rela *) sreloc->contents; | |
5664 | loc += sreloc->reloc_count++; | |
5665 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); | |
5666 | ||
5667 | /* If this reloc is against an external symbol, it will | |
5668 | be computed at runtime, so there's no need to do | |
5669 | anything now. */ | |
5670 | if (! relocate) | |
5671 | continue; | |
5672 | } | |
5bd4f169 AM |
5673 | break; |
5674 | ||
65f38f15 AM |
5675 | case R_PPC64_COPY: |
5676 | case R_PPC64_GLOB_DAT: | |
5677 | case R_PPC64_JMP_SLOT: | |
5678 | case R_PPC64_RELATIVE: | |
5679 | /* We shouldn't ever see these dynamic relocs in relocatable | |
5680 | files. */ | |
5681 | /* Fall thru */ | |
5682 | ||
5683 | case R_PPC64_PLTGOT16: | |
5684 | case R_PPC64_PLTGOT16_DS: | |
5685 | case R_PPC64_PLTGOT16_HA: | |
5686 | case R_PPC64_PLTGOT16_HI: | |
5687 | case R_PPC64_PLTGOT16_LO: | |
5688 | case R_PPC64_PLTGOT16_LO_DS: | |
5689 | case R_PPC64_PLTREL32: | |
5690 | case R_PPC64_PLTREL64: | |
5691 | /* These ones haven't been implemented yet. */ | |
5692 | ||
5693 | (*_bfd_error_handler) | |
5694 | (_("%s: Relocation %s is not supported for symbol %s."), | |
5695 | bfd_archive_filename (input_bfd), | |
5696 | ppc64_elf_howto_table[(int) r_type]->name, sym_name); | |
5bd4f169 AM |
5697 | |
5698 | bfd_set_error (bfd_error_invalid_operation); | |
5699 | ret = false; | |
5700 | continue; | |
65f38f15 | 5701 | } |
5bd4f169 | 5702 | |
65f38f15 AM |
5703 | /* Do any further special processing. */ |
5704 | switch (r_type) | |
5705 | { | |
5706 | default: | |
5707 | break; | |
5708 | ||
5709 | case R_PPC64_ADDR16_HA: | |
5710 | case R_PPC64_ADDR16_HIGHERA: | |
5711 | case R_PPC64_ADDR16_HIGHESTA: | |
5712 | case R_PPC64_PLT16_HA: | |
5713 | case R_PPC64_TOC16_HA: | |
5714 | case R_PPC64_SECTOFF_HA: | |
5715 | /* It's just possible that this symbol is a weak symbol | |
5716 | that's not actually defined anywhere. In that case, | |
5717 | 'sec' would be NULL, and we should leave the symbol | |
5718 | alone (it will be set to zero elsewhere in the link). */ | |
5719 | if (sec != NULL) | |
5720 | /* Add 0x10000 if sign bit in 0:15 is set. */ | |
5721 | addend += ((relocation + addend) & 0x8000) << 1; | |
5722 | break; | |
5723 | ||
5724 | case R_PPC64_ADDR16_DS: | |
5725 | case R_PPC64_ADDR16_LO_DS: | |
5726 | case R_PPC64_GOT16_DS: | |
5727 | case R_PPC64_GOT16_LO_DS: | |
5728 | case R_PPC64_PLT16_LO_DS: | |
5729 | case R_PPC64_SECTOFF_DS: | |
5730 | case R_PPC64_SECTOFF_LO_DS: | |
5731 | case R_PPC64_TOC16_DS: | |
5732 | case R_PPC64_TOC16_LO_DS: | |
5733 | case R_PPC64_PLTGOT16_DS: | |
5734 | case R_PPC64_PLTGOT16_LO_DS: | |
5735 | if (((relocation + addend) & 3) != 0) | |
5736 | { | |
5737 | (*_bfd_error_handler) | |
5738 | (_("%s: error: relocation %s not a multiple of 4"), | |
5739 | bfd_archive_filename (input_bfd), | |
5740 | ppc64_elf_howto_table[(int) r_type]->name); | |
5741 | bfd_set_error (bfd_error_bad_value); | |
5742 | ret = false; | |
5743 | continue; | |
5744 | } | |
5745 | break; | |
721956f4 AM |
5746 | |
5747 | case R_PPC64_REL14: | |
5748 | case R_PPC64_REL14_BRNTAKEN: | |
5749 | case R_PPC64_REL14_BRTAKEN: | |
5750 | max_br_offset = 1 << 15; | |
5751 | goto branch_check; | |
5752 | ||
5753 | case R_PPC64_REL24: | |
5754 | max_br_offset = 1 << 25; | |
5755 | ||
5756 | branch_check: | |
5757 | /* If the branch is out of reach, then redirect the | |
5758 | call to the local stub for this function. */ | |
5759 | from = (offset | |
5760 | + input_section->output_offset | |
5761 | + input_section->output_section->vma); | |
5762 | if (relocation + addend - from + max_br_offset >= 2 * max_br_offset | |
5763 | && (stub_entry = ppc_get_stub_entry (input_section, sec, h, | |
5764 | rel, htab)) != NULL) | |
5765 | { | |
5766 | /* Munge up the value and addend so that we call the stub | |
5767 | rather than the procedure directly. */ | |
5768 | relocation = (stub_entry->stub_offset | |
5769 | + stub_entry->stub_sec->output_offset | |
5770 | + stub_entry->stub_sec->output_section->vma); | |
5771 | addend = 0; | |
5772 | } | |
5773 | break; | |
5bd4f169 AM |
5774 | } |
5775 | ||
65f38f15 AM |
5776 | /* FIXME: Why do we allow debugging sections to escape this error? |
5777 | More importantly, why do we not emit dynamic relocs above in | |
5778 | debugging sections (which are ! SEC_ALLOC)? If we had | |
5779 | emitted the dynamic reloc, we could remove the fudge here. */ | |
5780 | if (unresolved_reloc | |
5781 | && !(info->shared | |
5782 | && (input_section->flags & SEC_DEBUGGING) != 0 | |
5783 | && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0)) | |
9c07fe7c AM |
5784 | { |
5785 | (*_bfd_error_handler) | |
5786 | (_("%s(%s+0x%lx): unresolvable relocation against symbol `%s'"), | |
5787 | bfd_archive_filename (input_bfd), | |
5788 | bfd_get_section_name (input_bfd, input_section), | |
5789 | (long) rel->r_offset, | |
5790 | h->root.root.string); | |
5791 | ret = false; | |
5792 | } | |
5bd4f169 | 5793 | |
65f38f15 | 5794 | r = _bfd_final_link_relocate (ppc64_elf_howto_table[(int) r_type], |
5bd4f169 AM |
5795 | input_bfd, |
5796 | input_section, | |
5797 | contents, | |
5798 | offset, | |
5799 | relocation, | |
5800 | addend); | |
5801 | ||
ef60b7ff | 5802 | if (r != bfd_reloc_ok) |
5bd4f169 AM |
5803 | { |
5804 | const char *name; | |
5805 | ||
5806 | if (h != NULL) | |
5807 | { | |
5808 | if (h->root.type == bfd_link_hash_undefweak | |
65f38f15 | 5809 | && ppc64_elf_howto_table[(int) r_type]->pc_relative) |
5bd4f169 AM |
5810 | { |
5811 | /* Assume this is a call protected by other code that | |
5812 | detects the symbol is undefined. If this is the case, | |
5813 | we can safely ignore the overflow. If not, the | |
5814 | program is hosed anyway, and a little warning isn't | |
5815 | going to help. */ | |
5816 | ||
5817 | continue; | |
5818 | } | |
5819 | ||
5820 | name = h->root.root.string; | |
5821 | } | |
5822 | else | |
5823 | { | |
5824 | name = bfd_elf_string_from_elf_section (input_bfd, | |
5825 | symtab_hdr->sh_link, | |
5826 | sym->st_name); | |
5827 | if (name == NULL) | |
5828 | continue; | |
5829 | if (*name == '\0') | |
5830 | name = bfd_section_name (input_bfd, sec); | |
5831 | } | |
5832 | ||
ef60b7ff AM |
5833 | if (r == bfd_reloc_overflow) |
5834 | { | |
5835 | if (warned) | |
5836 | continue; | |
5837 | if (!((*info->callbacks->reloc_overflow) | |
5838 | (info, name, ppc64_elf_howto_table[(int) r_type]->name, | |
5839 | rel->r_addend, input_bfd, input_section, offset))) | |
5840 | return false; | |
5841 | } | |
5842 | else | |
5843 | { | |
5844 | (*_bfd_error_handler) | |
5845 | (_("%s(%s+0x%lx): reloc against `%s': error %d"), | |
5846 | bfd_archive_filename (input_bfd), | |
5847 | bfd_get_section_name (input_bfd, input_section), | |
5848 | (long) rel->r_offset, name, (int) r); | |
5849 | ret = false; | |
5850 | } | |
5bd4f169 | 5851 | } |
5bd4f169 AM |
5852 | } |
5853 | ||
5bd4f169 AM |
5854 | return ret; |
5855 | } | |
5856 | ||
5857 | /* Finish up dynamic symbol handling. We set the contents of various | |
5858 | dynamic sections here. */ | |
5859 | ||
5860 | static boolean | |
5861 | ppc64_elf_finish_dynamic_symbol (output_bfd, info, h, sym) | |
5862 | bfd *output_bfd; | |
5863 | struct bfd_link_info *info; | |
5864 | struct elf_link_hash_entry *h; | |
5865 | Elf_Internal_Sym *sym; | |
5866 | { | |
65f38f15 | 5867 | struct ppc_link_hash_table *htab; |
5bd4f169 AM |
5868 | bfd *dynobj; |
5869 | ||
65f38f15 AM |
5870 | htab = ppc_hash_table (info); |
5871 | dynobj = htab->elf.dynobj; | |
5bd4f169 | 5872 | |
41bd81ab AM |
5873 | if (h->plt.offset != (bfd_vma) -1 |
5874 | && ((struct ppc_link_hash_entry *) h)->is_func_descriptor) | |
5bd4f169 | 5875 | { |
65f38f15 AM |
5876 | Elf_Internal_Rela rela; |
5877 | Elf64_External_Rela *loc; | |
5bd4f169 AM |
5878 | |
5879 | /* This symbol has an entry in the procedure linkage table. Set | |
5880 | it up. */ | |
5881 | ||
5d1634d7 | 5882 | if (htab->splt == NULL |
65f38f15 | 5883 | || htab->srelplt == NULL |
e86ce104 | 5884 | || htab->sglink == NULL) |
65f38f15 AM |
5885 | abort (); |
5886 | ||
65f38f15 AM |
5887 | /* Create a JMP_SLOT reloc to inform the dynamic linker to |
5888 | fill in the PLT entry. */ | |
5bd4f169 | 5889 | |
65f38f15 AM |
5890 | rela.r_offset = (htab->splt->output_section->vma |
5891 | + htab->splt->output_offset | |
5892 | + h->plt.offset); | |
e86ce104 | 5893 | rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_JMP_SLOT); |
65f38f15 AM |
5894 | rela.r_addend = 0; |
5895 | ||
5896 | loc = (Elf64_External_Rela *) htab->srelplt->contents; | |
5897 | loc += (h->plt.offset - PLT_INITIAL_ENTRY_SIZE) / PLT_ENTRY_SIZE; | |
5898 | bfd_elf64_swap_reloca_out (output_bfd, &rela, loc); | |
5bd4f169 AM |
5899 | } |
5900 | ||
5901 | if (h->got.offset != (bfd_vma) -1) | |
5902 | { | |
5bd4f169 | 5903 | Elf_Internal_Rela rela; |
65f38f15 | 5904 | Elf64_External_Rela *loc; |
5bd4f169 AM |
5905 | |
5906 | /* This symbol has an entry in the global offset table. Set it | |
5907 | up. */ | |
5908 | ||
65f38f15 AM |
5909 | if (htab->sgot == NULL || htab->srelgot == NULL) |
5910 | abort (); | |
5bd4f169 | 5911 | |
65f38f15 AM |
5912 | rela.r_offset = (htab->sgot->output_section->vma |
5913 | + htab->sgot->output_offset | |
dc810e39 | 5914 | + (h->got.offset &~ (bfd_vma) 1)); |
5bd4f169 | 5915 | |
65f38f15 AM |
5916 | /* If this is a static link, or it is a -Bsymbolic link and the |
5917 | symbol is defined locally or was forced to be local because | |
5918 | of a version file, we just want to emit a RELATIVE reloc. | |
5919 | The entry in the global offset table will already have been | |
5920 | initialized in the relocate_section function. */ | |
5bd4f169 | 5921 | if (info->shared |
65f38f15 AM |
5922 | && (info->symbolic |
5923 | || h->dynindx == -1 | |
5924 | || (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL)) | |
5bd4f169 AM |
5925 | && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR)) |
5926 | { | |
65f38f15 | 5927 | BFD_ASSERT((h->got.offset & 1) != 0); |
5bd4f169 AM |
5928 | rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); |
5929 | rela.r_addend = (h->root.u.def.value | |
5930 | + h->root.u.def.section->output_section->vma | |
5931 | + h->root.u.def.section->output_offset); | |
5932 | } | |
5933 | else | |
5934 | { | |
5935 | BFD_ASSERT ((h->got.offset & 1) == 0); | |
65f38f15 AM |
5936 | bfd_put_64 (output_bfd, (bfd_vma) 0, |
5937 | htab->sgot->contents + h->got.offset); | |
5bd4f169 AM |
5938 | rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_GLOB_DAT); |
5939 | rela.r_addend = 0; | |
5940 | } | |
5941 | ||
65f38f15 AM |
5942 | loc = (Elf64_External_Rela *) htab->srelgot->contents; |
5943 | loc += htab->srelgot->reloc_count++; | |
5944 | bfd_elf64_swap_reloca_out (output_bfd, &rela, loc); | |
5bd4f169 AM |
5945 | } |
5946 | ||
5947 | if ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_COPY) != 0) | |
5948 | { | |
5bd4f169 | 5949 | Elf_Internal_Rela rela; |
65f38f15 | 5950 | Elf64_External_Rela *loc; |
5bd4f169 | 5951 | |
65f38f15 | 5952 | /* This symbol needs a copy reloc. Set it up. */ |
5bd4f169 | 5953 | |
65f38f15 AM |
5954 | if (h->dynindx == -1 |
5955 | || (h->root.type != bfd_link_hash_defined | |
5956 | && h->root.type != bfd_link_hash_defweak) | |
5957 | || htab->srelbss == NULL) | |
5958 | abort (); | |
5bd4f169 AM |
5959 | |
5960 | rela.r_offset = (h->root.u.def.value | |
5961 | + h->root.u.def.section->output_section->vma | |
5962 | + h->root.u.def.section->output_offset); | |
5963 | rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_COPY); | |
5964 | rela.r_addend = 0; | |
65f38f15 AM |
5965 | loc = (Elf64_External_Rela *) htab->srelbss->contents; |
5966 | loc += htab->srelbss->reloc_count++; | |
5967 | bfd_elf64_swap_reloca_out (output_bfd, &rela, loc); | |
5bd4f169 AM |
5968 | } |
5969 | ||
5bd4f169 AM |
5970 | /* Mark some specially defined symbols as absolute. */ |
5971 | if (strcmp (h->root.root.string, "_DYNAMIC") == 0) | |
5972 | sym->st_shndx = SHN_ABS; | |
5973 | ||
5974 | return true; | |
5975 | } | |
5976 | ||
65f38f15 AM |
5977 | /* Used to decide how to sort relocs in an optimal manner for the |
5978 | dynamic linker, before writing them out. */ | |
5979 | ||
5980 | static enum elf_reloc_type_class | |
5981 | ppc64_elf_reloc_type_class (rela) | |
5982 | const Elf_Internal_Rela *rela; | |
5983 | { | |
a33d1f77 AM |
5984 | enum elf_ppc_reloc_type r_type; |
5985 | ||
5986 | r_type = (enum elf_ppc_reloc_type) ELF64_R_TYPE (rela->r_info); | |
5987 | switch (r_type) | |
65f38f15 AM |
5988 | { |
5989 | case R_PPC64_RELATIVE: | |
5990 | return reloc_class_relative; | |
5991 | case R_PPC64_JMP_SLOT: | |
5992 | return reloc_class_plt; | |
5993 | case R_PPC64_COPY: | |
5994 | return reloc_class_copy; | |
5995 | default: | |
5996 | return reloc_class_normal; | |
5997 | } | |
5998 | } | |
5999 | ||
5bd4f169 AM |
6000 | /* Finish up the dynamic sections. */ |
6001 | ||
6002 | static boolean | |
6003 | ppc64_elf_finish_dynamic_sections (output_bfd, info) | |
6004 | bfd *output_bfd; | |
6005 | struct bfd_link_info *info; | |
6006 | { | |
65f38f15 AM |
6007 | struct ppc_link_hash_table *htab; |
6008 | bfd *dynobj; | |
5bd4f169 | 6009 | asection *sdyn; |
5bd4f169 | 6010 | |
65f38f15 AM |
6011 | htab = ppc_hash_table (info); |
6012 | dynobj = htab->elf.dynobj; | |
5bd4f169 AM |
6013 | sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); |
6014 | ||
65f38f15 | 6015 | if (htab->elf.dynamic_sections_created) |
5bd4f169 | 6016 | { |
5bd4f169 AM |
6017 | Elf64_External_Dyn *dyncon, *dynconend; |
6018 | ||
65f38f15 AM |
6019 | if (sdyn == NULL || htab->sgot == NULL) |
6020 | abort (); | |
5bd4f169 AM |
6021 | |
6022 | dyncon = (Elf64_External_Dyn *) sdyn->contents; | |
6023 | dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->_raw_size); | |
6024 | for (; dyncon < dynconend; dyncon++) | |
6025 | { | |
6026 | Elf_Internal_Dyn dyn; | |
19397422 | 6027 | asection *s; |
5bd4f169 AM |
6028 | |
6029 | bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn); | |
6030 | ||
6031 | switch (dyn.d_tag) | |
6032 | { | |
65f38f15 AM |
6033 | default: |
6034 | continue; | |
5bd4f169 | 6035 | |
5d1634d7 AM |
6036 | case DT_PPC64_GLINK: |
6037 | dyn.d_un.d_ptr = (htab->sglink->output_section->vma | |
6038 | + htab->sglink->output_offset); | |
6039 | break; | |
6040 | ||
19397422 AM |
6041 | case DT_PPC64_OPD: |
6042 | s = bfd_get_section_by_name (output_bfd, ".opd"); | |
6043 | if (s != NULL) | |
6044 | dyn.d_un.d_ptr = s->vma; | |
6045 | break; | |
6046 | ||
6047 | case DT_PPC64_OPDSZ: | |
6048 | s = bfd_get_section_by_name (output_bfd, ".opd"); | |
6049 | if (s != NULL) | |
6050 | dyn.d_un.d_val = s->_raw_size; | |
6051 | break; | |
6052 | ||
65f38f15 | 6053 | case DT_PLTGOT: |
5d1634d7 AM |
6054 | dyn.d_un.d_ptr = (htab->splt->output_section->vma |
6055 | + htab->splt->output_offset); | |
65f38f15 AM |
6056 | break; |
6057 | ||
6058 | case DT_JMPREL: | |
5d1634d7 AM |
6059 | dyn.d_un.d_ptr = (htab->srelplt->output_section->vma |
6060 | + htab->srelplt->output_offset); | |
65f38f15 | 6061 | break; |
5bd4f169 | 6062 | |
65f38f15 | 6063 | case DT_PLTRELSZ: |
5d1634d7 AM |
6064 | dyn.d_un.d_val = htab->srelplt->_raw_size; |
6065 | break; | |
6066 | ||
6067 | case DT_RELASZ: | |
6068 | /* Don't count procedure linkage table relocs in the | |
6069 | overall reloc count. */ | |
6070 | if (htab->srelplt != NULL) | |
6071 | dyn.d_un.d_val -= htab->srelplt->_raw_size; | |
65f38f15 | 6072 | break; |
5bd4f169 | 6073 | } |
5bd4f169 | 6074 | |
65f38f15 | 6075 | bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon); |
5bd4f169 | 6076 | } |
5bd4f169 AM |
6077 | } |
6078 | ||
5d1634d7 AM |
6079 | if (htab->sgot != NULL && htab->sgot->_raw_size != 0) |
6080 | { | |
6081 | /* Fill in the first entry in the global offset table. | |
6082 | We use it to hold the link-time TOCbase. */ | |
6083 | bfd_put_64 (output_bfd, | |
60ee0d4a | 6084 | elf_gp (output_bfd) + TOC_BASE_OFF, |
5d1634d7 AM |
6085 | htab->sgot->contents); |
6086 | ||
6087 | /* Set .got entry size. */ | |
6088 | elf_section_data (htab->sgot->output_section)->this_hdr.sh_entsize = 8; | |
6089 | } | |
6090 | ||
6091 | if (htab->splt != NULL && htab->splt->_raw_size != 0) | |
6092 | { | |
6093 | /* Set .plt entry size. */ | |
6094 | elf_section_data (htab->splt->output_section)->this_hdr.sh_entsize | |
6095 | = PLT_ENTRY_SIZE; | |
6096 | } | |
6097 | ||
5bd4f169 AM |
6098 | return true; |
6099 | } | |
6100 | ||
6101 | #define TARGET_LITTLE_SYM bfd_elf64_powerpcle_vec | |
6102 | #define TARGET_LITTLE_NAME "elf64-powerpcle" | |
6103 | #define TARGET_BIG_SYM bfd_elf64_powerpc_vec | |
6104 | #define TARGET_BIG_NAME "elf64-powerpc" | |
6105 | #define ELF_ARCH bfd_arch_powerpc | |
6106 | #define ELF_MACHINE_CODE EM_PPC64 | |
6107 | #define ELF_MAXPAGESIZE 0x10000 | |
6108 | #define elf_info_to_howto ppc64_elf_info_to_howto | |
6109 | ||
6110 | #ifdef EM_CYGNUS_POWERPC | |
6111 | #define ELF_MACHINE_ALT1 EM_CYGNUS_POWERPC | |
6112 | #endif | |
6113 | ||
6114 | #ifdef EM_PPC_OLD | |
6115 | #define ELF_MACHINE_ALT2 EM_PPC_OLD | |
6116 | #endif | |
6117 | ||
6118 | #define elf_backend_want_got_sym 0 | |
6119 | #define elf_backend_want_plt_sym 0 | |
6120 | #define elf_backend_plt_alignment 3 | |
6121 | #define elf_backend_plt_not_loaded 1 | |
6122 | #define elf_backend_got_symbol_offset 0 | |
5d1634d7 AM |
6123 | #define elf_backend_got_header_size 8 |
6124 | #define elf_backend_plt_header_size PLT_INITIAL_ENTRY_SIZE | |
5bd4f169 | 6125 | #define elf_backend_can_gc_sections 1 |
65f38f15 | 6126 | #define elf_backend_can_refcount 1 |
b491616a | 6127 | #define elf_backend_rela_normal 1 |
5bd4f169 | 6128 | |
65f38f15 AM |
6129 | #define bfd_elf64_bfd_reloc_type_lookup ppc64_elf_reloc_type_lookup |
6130 | #define bfd_elf64_bfd_set_private_flags ppc64_elf_set_private_flags | |
65f38f15 AM |
6131 | #define bfd_elf64_bfd_merge_private_bfd_data ppc64_elf_merge_private_bfd_data |
6132 | #define bfd_elf64_bfd_link_hash_table_create ppc64_elf_link_hash_table_create | |
721956f4 | 6133 | #define bfd_elf64_bfd_link_hash_table_free ppc64_elf_link_hash_table_free |
7cdc5bba | 6134 | #define bfd_elf64_get_symbol_info ppc64_elf_get_symbol_info |
65f38f15 AM |
6135 | |
6136 | #define elf_backend_section_from_shdr ppc64_elf_section_from_shdr | |
6137 | #define elf_backend_create_dynamic_sections ppc64_elf_create_dynamic_sections | |
6138 | #define elf_backend_copy_indirect_symbol ppc64_elf_copy_indirect_symbol | |
6139 | #define elf_backend_check_relocs ppc64_elf_check_relocs | |
6140 | #define elf_backend_gc_mark_hook ppc64_elf_gc_mark_hook | |
6141 | #define elf_backend_gc_sweep_hook ppc64_elf_gc_sweep_hook | |
6142 | #define elf_backend_adjust_dynamic_symbol ppc64_elf_adjust_dynamic_symbol | |
e86ce104 AM |
6143 | #define elf_backend_hide_symbol ppc64_elf_hide_symbol |
6144 | #define elf_backend_always_size_sections ppc64_elf_func_desc_adjust | |
65f38f15 AM |
6145 | #define elf_backend_size_dynamic_sections ppc64_elf_size_dynamic_sections |
6146 | #define elf_backend_fake_sections ppc64_elf_fake_sections | |
6147 | #define elf_backend_relocate_section ppc64_elf_relocate_section | |
6148 | #define elf_backend_finish_dynamic_symbol ppc64_elf_finish_dynamic_symbol | |
6149 | #define elf_backend_reloc_type_class ppc64_elf_reloc_type_class | |
6150 | #define elf_backend_finish_dynamic_sections ppc64_elf_finish_dynamic_sections | |
5bd4f169 AM |
6151 | |
6152 | #include "elf64-target.h" |