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Don't include libbfd.h outside of bfd, part 1
[deliverable/binutils-gdb.git] / bfd / elf32-ppc.c
1 /* PowerPC-specific support for 32-bit ELF
2 Copyright (C) 1994-2016 Free Software Foundation, Inc.
3 Written by Ian Lance Taylor, Cygnus Support.
4
5 This file is part of BFD, the Binary File Descriptor library.
6
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
11
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
16
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the
19 Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor,
20 Boston, MA 02110-1301, USA. */
21
22
23 /* This file is based on a preliminary PowerPC ELF ABI. The
24 information may not match the final PowerPC ELF ABI. It includes
25 suggestions from the in-progress Embedded PowerPC ABI, and that
26 information may also not match. */
27
28 #include "sysdep.h"
29 #include <stdarg.h>
30 #include "bfd.h"
31 #include "bfdlink.h"
32 #include "libbfd.h"
33 #include "elf-bfd.h"
34 #include "elf/ppc.h"
35 #include "elf32-ppc.h"
36 #include "elf-vxworks.h"
37 #include "dwarf2.h"
38
39 typedef enum split16_format_type
40 {
41 split16a_type = 0,
42 split16d_type
43 }
44 split16_format_type;
45
46 /* RELA relocations are used here. */
47
48 static bfd_reloc_status_type ppc_elf_addr16_ha_reloc
49 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
50 static bfd_reloc_status_type ppc_elf_unhandled_reloc
51 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
52
53 /* Branch prediction bit for branch taken relocs. */
54 #define BRANCH_PREDICT_BIT 0x200000
55 /* Mask to set RA in memory instructions. */
56 #define RA_REGISTER_MASK 0x001f0000
57 /* Value to shift register by to insert RA. */
58 #define RA_REGISTER_SHIFT 16
59
60 /* The name of the dynamic interpreter. This is put in the .interp
61 section. */
62 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
63
64 /* For old-style PLT. */
65 /* The number of single-slot PLT entries (the rest use two slots). */
66 #define PLT_NUM_SINGLE_ENTRIES 8192
67
68 /* For new-style .glink and .plt. */
69 #define GLINK_PLTRESOLVE 16*4
70 #define GLINK_ENTRY_SIZE 4*4
71 #define TLS_GET_ADDR_GLINK_SIZE 12*4
72
73 /* VxWorks uses its own plt layout, filled in by the static linker. */
74
75 /* The standard VxWorks PLT entry. */
76 #define VXWORKS_PLT_ENTRY_SIZE 32
77 static const bfd_vma ppc_elf_vxworks_plt_entry
78 [VXWORKS_PLT_ENTRY_SIZE / 4] =
79 {
80 0x3d800000, /* lis r12,0 */
81 0x818c0000, /* lwz r12,0(r12) */
82 0x7d8903a6, /* mtctr r12 */
83 0x4e800420, /* bctr */
84 0x39600000, /* li r11,0 */
85 0x48000000, /* b 14 <.PLT0resolve+0x4> */
86 0x60000000, /* nop */
87 0x60000000, /* nop */
88 };
89 static const bfd_vma ppc_elf_vxworks_pic_plt_entry
90 [VXWORKS_PLT_ENTRY_SIZE / 4] =
91 {
92 0x3d9e0000, /* addis r12,r30,0 */
93 0x818c0000, /* lwz r12,0(r12) */
94 0x7d8903a6, /* mtctr r12 */
95 0x4e800420, /* bctr */
96 0x39600000, /* li r11,0 */
97 0x48000000, /* b 14 <.PLT0resolve+0x4> 14: R_PPC_REL24 .PLTresolve */
98 0x60000000, /* nop */
99 0x60000000, /* nop */
100 };
101
102 /* The initial VxWorks PLT entry. */
103 #define VXWORKS_PLT_INITIAL_ENTRY_SIZE 32
104 static const bfd_vma ppc_elf_vxworks_plt0_entry
105 [VXWORKS_PLT_INITIAL_ENTRY_SIZE / 4] =
106 {
107 0x3d800000, /* lis r12,0 */
108 0x398c0000, /* addi r12,r12,0 */
109 0x800c0008, /* lwz r0,8(r12) */
110 0x7c0903a6, /* mtctr r0 */
111 0x818c0004, /* lwz r12,4(r12) */
112 0x4e800420, /* bctr */
113 0x60000000, /* nop */
114 0x60000000, /* nop */
115 };
116 static const bfd_vma ppc_elf_vxworks_pic_plt0_entry
117 [VXWORKS_PLT_INITIAL_ENTRY_SIZE / 4] =
118 {
119 0x819e0008, /* lwz r12,8(r30) */
120 0x7d8903a6, /* mtctr r12 */
121 0x819e0004, /* lwz r12,4(r30) */
122 0x4e800420, /* bctr */
123 0x60000000, /* nop */
124 0x60000000, /* nop */
125 0x60000000, /* nop */
126 0x60000000, /* nop */
127 };
128
129 /* For executables, we have some additional relocations in
130 .rela.plt.unloaded, for the kernel loader. */
131
132 /* The number of non-JMP_SLOT relocations per PLT0 slot. */
133 #define VXWORKS_PLT_NON_JMP_SLOT_RELOCS 3
134 /* The number of relocations in the PLTResolve slot. */
135 #define VXWORKS_PLTRESOLVE_RELOCS 2
136 /* The number of relocations in the PLTResolve slot when when creating
137 a shared library. */
138 #define VXWORKS_PLTRESOLVE_RELOCS_SHLIB 0
139
140 /* Some instructions. */
141 #define ADDIS_11_11 0x3d6b0000
142 #define ADDIS_11_30 0x3d7e0000
143 #define ADDIS_12_12 0x3d8c0000
144 #define ADDI_11_11 0x396b0000
145 #define ADD_0_11_11 0x7c0b5a14
146 #define ADD_3_12_2 0x7c6c1214
147 #define ADD_11_0_11 0x7d605a14
148 #define B 0x48000000
149 #define BA 0x48000002
150 #define BCL_20_31 0x429f0005
151 #define BCTR 0x4e800420
152 #define BEQLR 0x4d820020
153 #define CMPWI_11_0 0x2c0b0000
154 #define LIS_11 0x3d600000
155 #define LIS_12 0x3d800000
156 #define LWZU_0_12 0x840c0000
157 #define LWZ_0_12 0x800c0000
158 #define LWZ_11_3 0x81630000
159 #define LWZ_11_11 0x816b0000
160 #define LWZ_11_30 0x817e0000
161 #define LWZ_12_3 0x81830000
162 #define LWZ_12_12 0x818c0000
163 #define MR_0_3 0x7c601b78
164 #define MR_3_0 0x7c030378
165 #define MFLR_0 0x7c0802a6
166 #define MFLR_12 0x7d8802a6
167 #define MTCTR_0 0x7c0903a6
168 #define MTCTR_11 0x7d6903a6
169 #define MTLR_0 0x7c0803a6
170 #define NOP 0x60000000
171 #define SUB_11_11_12 0x7d6c5850
172
173 /* Offset of tp and dtp pointers from start of TLS block. */
174 #define TP_OFFSET 0x7000
175 #define DTP_OFFSET 0x8000
176
177 /* The value of a defined global symbol. */
178 #define SYM_VAL(SYM) \
179 ((SYM)->root.u.def.section->output_section->vma \
180 + (SYM)->root.u.def.section->output_offset \
181 + (SYM)->root.u.def.value)
182 \f
183 static reloc_howto_type *ppc_elf_howto_table[R_PPC_max];
184
185 static reloc_howto_type ppc_elf_howto_raw[] = {
186 /* This reloc does nothing. */
187 HOWTO (R_PPC_NONE, /* type */
188 0, /* rightshift */
189 3, /* size (0 = byte, 1 = short, 2 = long) */
190 0, /* bitsize */
191 FALSE, /* pc_relative */
192 0, /* bitpos */
193 complain_overflow_dont, /* complain_on_overflow */
194 bfd_elf_generic_reloc, /* special_function */
195 "R_PPC_NONE", /* name */
196 FALSE, /* partial_inplace */
197 0, /* src_mask */
198 0, /* dst_mask */
199 FALSE), /* pcrel_offset */
200
201 /* A standard 32 bit relocation. */
202 HOWTO (R_PPC_ADDR32, /* type */
203 0, /* rightshift */
204 2, /* size (0 = byte, 1 = short, 2 = long) */
205 32, /* bitsize */
206 FALSE, /* pc_relative */
207 0, /* bitpos */
208 complain_overflow_dont, /* complain_on_overflow */
209 bfd_elf_generic_reloc, /* special_function */
210 "R_PPC_ADDR32", /* name */
211 FALSE, /* partial_inplace */
212 0, /* src_mask */
213 0xffffffff, /* dst_mask */
214 FALSE), /* pcrel_offset */
215
216 /* An absolute 26 bit branch; the lower two bits must be zero.
217 FIXME: we don't check that, we just clear them. */
218 HOWTO (R_PPC_ADDR24, /* type */
219 0, /* rightshift */
220 2, /* size (0 = byte, 1 = short, 2 = long) */
221 26, /* bitsize */
222 FALSE, /* pc_relative */
223 0, /* bitpos */
224 complain_overflow_signed, /* complain_on_overflow */
225 bfd_elf_generic_reloc, /* special_function */
226 "R_PPC_ADDR24", /* name */
227 FALSE, /* partial_inplace */
228 0, /* src_mask */
229 0x3fffffc, /* dst_mask */
230 FALSE), /* pcrel_offset */
231
232 /* A standard 16 bit relocation. */
233 HOWTO (R_PPC_ADDR16, /* type */
234 0, /* rightshift */
235 1, /* size (0 = byte, 1 = short, 2 = long) */
236 16, /* bitsize */
237 FALSE, /* pc_relative */
238 0, /* bitpos */
239 complain_overflow_bitfield, /* complain_on_overflow */
240 bfd_elf_generic_reloc, /* special_function */
241 "R_PPC_ADDR16", /* name */
242 FALSE, /* partial_inplace */
243 0, /* src_mask */
244 0xffff, /* dst_mask */
245 FALSE), /* pcrel_offset */
246
247 /* A 16 bit relocation without overflow. */
248 HOWTO (R_PPC_ADDR16_LO, /* type */
249 0, /* rightshift */
250 1, /* size (0 = byte, 1 = short, 2 = long) */
251 16, /* bitsize */
252 FALSE, /* pc_relative */
253 0, /* bitpos */
254 complain_overflow_dont,/* complain_on_overflow */
255 bfd_elf_generic_reloc, /* special_function */
256 "R_PPC_ADDR16_LO", /* name */
257 FALSE, /* partial_inplace */
258 0, /* src_mask */
259 0xffff, /* dst_mask */
260 FALSE), /* pcrel_offset */
261
262 /* The high order 16 bits of an address. */
263 HOWTO (R_PPC_ADDR16_HI, /* type */
264 16, /* rightshift */
265 1, /* size (0 = byte, 1 = short, 2 = long) */
266 16, /* bitsize */
267 FALSE, /* pc_relative */
268 0, /* bitpos */
269 complain_overflow_dont, /* complain_on_overflow */
270 bfd_elf_generic_reloc, /* special_function */
271 "R_PPC_ADDR16_HI", /* name */
272 FALSE, /* partial_inplace */
273 0, /* src_mask */
274 0xffff, /* dst_mask */
275 FALSE), /* pcrel_offset */
276
277 /* The high order 16 bits of an address, plus 1 if the contents of
278 the low 16 bits, treated as a signed number, is negative. */
279 HOWTO (R_PPC_ADDR16_HA, /* type */
280 16, /* rightshift */
281 1, /* size (0 = byte, 1 = short, 2 = long) */
282 16, /* bitsize */
283 FALSE, /* pc_relative */
284 0, /* bitpos */
285 complain_overflow_dont, /* complain_on_overflow */
286 ppc_elf_addr16_ha_reloc, /* special_function */
287 "R_PPC_ADDR16_HA", /* name */
288 FALSE, /* partial_inplace */
289 0, /* src_mask */
290 0xffff, /* dst_mask */
291 FALSE), /* pcrel_offset */
292
293 /* An absolute 16 bit branch; the lower two bits must be zero.
294 FIXME: we don't check that, we just clear them. */
295 HOWTO (R_PPC_ADDR14, /* type */
296 0, /* rightshift */
297 2, /* size (0 = byte, 1 = short, 2 = long) */
298 16, /* bitsize */
299 FALSE, /* pc_relative */
300 0, /* bitpos */
301 complain_overflow_signed, /* complain_on_overflow */
302 bfd_elf_generic_reloc, /* special_function */
303 "R_PPC_ADDR14", /* name */
304 FALSE, /* partial_inplace */
305 0, /* src_mask */
306 0xfffc, /* dst_mask */
307 FALSE), /* pcrel_offset */
308
309 /* An absolute 16 bit branch, for which bit 10 should be set to
310 indicate that the branch is expected to be taken. The lower two
311 bits must be zero. */
312 HOWTO (R_PPC_ADDR14_BRTAKEN, /* type */
313 0, /* rightshift */
314 2, /* size (0 = byte, 1 = short, 2 = long) */
315 16, /* bitsize */
316 FALSE, /* pc_relative */
317 0, /* bitpos */
318 complain_overflow_signed, /* complain_on_overflow */
319 bfd_elf_generic_reloc, /* special_function */
320 "R_PPC_ADDR14_BRTAKEN",/* name */
321 FALSE, /* partial_inplace */
322 0, /* src_mask */
323 0xfffc, /* dst_mask */
324 FALSE), /* pcrel_offset */
325
326 /* An absolute 16 bit branch, for which bit 10 should be set to
327 indicate that the branch is not expected to be taken. The lower
328 two bits must be zero. */
329 HOWTO (R_PPC_ADDR14_BRNTAKEN, /* type */
330 0, /* rightshift */
331 2, /* size (0 = byte, 1 = short, 2 = long) */
332 16, /* bitsize */
333 FALSE, /* pc_relative */
334 0, /* bitpos */
335 complain_overflow_signed, /* complain_on_overflow */
336 bfd_elf_generic_reloc, /* special_function */
337 "R_PPC_ADDR14_BRNTAKEN",/* name */
338 FALSE, /* partial_inplace */
339 0, /* src_mask */
340 0xfffc, /* dst_mask */
341 FALSE), /* pcrel_offset */
342
343 /* A relative 26 bit branch; the lower two bits must be zero. */
344 HOWTO (R_PPC_REL24, /* type */
345 0, /* rightshift */
346 2, /* size (0 = byte, 1 = short, 2 = long) */
347 26, /* bitsize */
348 TRUE, /* pc_relative */
349 0, /* bitpos */
350 complain_overflow_signed, /* complain_on_overflow */
351 bfd_elf_generic_reloc, /* special_function */
352 "R_PPC_REL24", /* name */
353 FALSE, /* partial_inplace */
354 0, /* src_mask */
355 0x3fffffc, /* dst_mask */
356 TRUE), /* pcrel_offset */
357
358 /* A relative 16 bit branch; the lower two bits must be zero. */
359 HOWTO (R_PPC_REL14, /* type */
360 0, /* rightshift */
361 2, /* size (0 = byte, 1 = short, 2 = long) */
362 16, /* bitsize */
363 TRUE, /* pc_relative */
364 0, /* bitpos */
365 complain_overflow_signed, /* complain_on_overflow */
366 bfd_elf_generic_reloc, /* special_function */
367 "R_PPC_REL14", /* name */
368 FALSE, /* partial_inplace */
369 0, /* src_mask */
370 0xfffc, /* dst_mask */
371 TRUE), /* pcrel_offset */
372
373 /* A relative 16 bit branch. Bit 10 should be set to indicate that
374 the branch is expected to be taken. The lower two bits must be
375 zero. */
376 HOWTO (R_PPC_REL14_BRTAKEN, /* type */
377 0, /* rightshift */
378 2, /* size (0 = byte, 1 = short, 2 = long) */
379 16, /* bitsize */
380 TRUE, /* pc_relative */
381 0, /* bitpos */
382 complain_overflow_signed, /* complain_on_overflow */
383 bfd_elf_generic_reloc, /* special_function */
384 "R_PPC_REL14_BRTAKEN", /* name */
385 FALSE, /* partial_inplace */
386 0, /* src_mask */
387 0xfffc, /* dst_mask */
388 TRUE), /* pcrel_offset */
389
390 /* A relative 16 bit branch. Bit 10 should be set to indicate that
391 the branch is not expected to be taken. The lower two bits must
392 be zero. */
393 HOWTO (R_PPC_REL14_BRNTAKEN, /* type */
394 0, /* rightshift */
395 2, /* size (0 = byte, 1 = short, 2 = long) */
396 16, /* bitsize */
397 TRUE, /* pc_relative */
398 0, /* bitpos */
399 complain_overflow_signed, /* complain_on_overflow */
400 bfd_elf_generic_reloc, /* special_function */
401 "R_PPC_REL14_BRNTAKEN",/* name */
402 FALSE, /* partial_inplace */
403 0, /* src_mask */
404 0xfffc, /* dst_mask */
405 TRUE), /* pcrel_offset */
406
407 /* Like R_PPC_ADDR16, but referring to the GOT table entry for the
408 symbol. */
409 HOWTO (R_PPC_GOT16, /* type */
410 0, /* rightshift */
411 1, /* size (0 = byte, 1 = short, 2 = long) */
412 16, /* bitsize */
413 FALSE, /* pc_relative */
414 0, /* bitpos */
415 complain_overflow_signed, /* complain_on_overflow */
416 bfd_elf_generic_reloc, /* special_function */
417 "R_PPC_GOT16", /* name */
418 FALSE, /* partial_inplace */
419 0, /* src_mask */
420 0xffff, /* dst_mask */
421 FALSE), /* pcrel_offset */
422
423 /* Like R_PPC_ADDR16_LO, but referring to the GOT table entry for
424 the symbol. */
425 HOWTO (R_PPC_GOT16_LO, /* type */
426 0, /* rightshift */
427 1, /* size (0 = byte, 1 = short, 2 = long) */
428 16, /* bitsize */
429 FALSE, /* pc_relative */
430 0, /* bitpos */
431 complain_overflow_dont, /* complain_on_overflow */
432 bfd_elf_generic_reloc, /* special_function */
433 "R_PPC_GOT16_LO", /* name */
434 FALSE, /* partial_inplace */
435 0, /* src_mask */
436 0xffff, /* dst_mask */
437 FALSE), /* pcrel_offset */
438
439 /* Like R_PPC_ADDR16_HI, but referring to the GOT table entry for
440 the symbol. */
441 HOWTO (R_PPC_GOT16_HI, /* type */
442 16, /* rightshift */
443 1, /* size (0 = byte, 1 = short, 2 = long) */
444 16, /* bitsize */
445 FALSE, /* pc_relative */
446 0, /* bitpos */
447 complain_overflow_dont, /* complain_on_overflow */
448 bfd_elf_generic_reloc, /* special_function */
449 "R_PPC_GOT16_HI", /* name */
450 FALSE, /* partial_inplace */
451 0, /* src_mask */
452 0xffff, /* dst_mask */
453 FALSE), /* pcrel_offset */
454
455 /* Like R_PPC_ADDR16_HA, but referring to the GOT table entry for
456 the symbol. */
457 HOWTO (R_PPC_GOT16_HA, /* type */
458 16, /* rightshift */
459 1, /* size (0 = byte, 1 = short, 2 = long) */
460 16, /* bitsize */
461 FALSE, /* pc_relative */
462 0, /* bitpos */
463 complain_overflow_dont, /* complain_on_overflow */
464 ppc_elf_addr16_ha_reloc, /* special_function */
465 "R_PPC_GOT16_HA", /* name */
466 FALSE, /* partial_inplace */
467 0, /* src_mask */
468 0xffff, /* dst_mask */
469 FALSE), /* pcrel_offset */
470
471 /* Like R_PPC_REL24, but referring to the procedure linkage table
472 entry for the symbol. */
473 HOWTO (R_PPC_PLTREL24, /* type */
474 0, /* rightshift */
475 2, /* size (0 = byte, 1 = short, 2 = long) */
476 26, /* bitsize */
477 TRUE, /* pc_relative */
478 0, /* bitpos */
479 complain_overflow_signed, /* complain_on_overflow */
480 bfd_elf_generic_reloc, /* special_function */
481 "R_PPC_PLTREL24", /* name */
482 FALSE, /* partial_inplace */
483 0, /* src_mask */
484 0x3fffffc, /* dst_mask */
485 TRUE), /* pcrel_offset */
486
487 /* This is used only by the dynamic linker. The symbol should exist
488 both in the object being run and in some shared library. The
489 dynamic linker copies the data addressed by the symbol from the
490 shared library into the object, because the object being
491 run has to have the data at some particular address. */
492 HOWTO (R_PPC_COPY, /* 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_dont, /* complain_on_overflow */
499 bfd_elf_generic_reloc, /* special_function */
500 "R_PPC_COPY", /* name */
501 FALSE, /* partial_inplace */
502 0, /* src_mask */
503 0, /* dst_mask */
504 FALSE), /* pcrel_offset */
505
506 /* Like R_PPC_ADDR32, but used when setting global offset table
507 entries. */
508 HOWTO (R_PPC_GLOB_DAT, /* type */
509 0, /* rightshift */
510 2, /* size (0 = byte, 1 = short, 2 = long) */
511 32, /* bitsize */
512 FALSE, /* pc_relative */
513 0, /* bitpos */
514 complain_overflow_dont, /* complain_on_overflow */
515 bfd_elf_generic_reloc, /* special_function */
516 "R_PPC_GLOB_DAT", /* name */
517 FALSE, /* partial_inplace */
518 0, /* src_mask */
519 0xffffffff, /* dst_mask */
520 FALSE), /* pcrel_offset */
521
522 /* Marks a procedure linkage table entry for a symbol. */
523 HOWTO (R_PPC_JMP_SLOT, /* type */
524 0, /* rightshift */
525 2, /* size (0 = byte, 1 = short, 2 = long) */
526 32, /* bitsize */
527 FALSE, /* pc_relative */
528 0, /* bitpos */
529 complain_overflow_dont, /* complain_on_overflow */
530 bfd_elf_generic_reloc, /* special_function */
531 "R_PPC_JMP_SLOT", /* name */
532 FALSE, /* partial_inplace */
533 0, /* src_mask */
534 0, /* dst_mask */
535 FALSE), /* pcrel_offset */
536
537 /* Used only by the dynamic linker. When the object is run, this
538 longword is set to the load address of the object, plus the
539 addend. */
540 HOWTO (R_PPC_RELATIVE, /* type */
541 0, /* rightshift */
542 2, /* size (0 = byte, 1 = short, 2 = long) */
543 32, /* bitsize */
544 FALSE, /* pc_relative */
545 0, /* bitpos */
546 complain_overflow_dont, /* complain_on_overflow */
547 bfd_elf_generic_reloc, /* special_function */
548 "R_PPC_RELATIVE", /* name */
549 FALSE, /* partial_inplace */
550 0, /* src_mask */
551 0xffffffff, /* dst_mask */
552 FALSE), /* pcrel_offset */
553
554 /* Like R_PPC_REL24, but uses the value of the symbol within the
555 object rather than the final value. Normally used for
556 _GLOBAL_OFFSET_TABLE_. */
557 HOWTO (R_PPC_LOCAL24PC, /* type */
558 0, /* rightshift */
559 2, /* size (0 = byte, 1 = short, 2 = long) */
560 26, /* bitsize */
561 TRUE, /* pc_relative */
562 0, /* bitpos */
563 complain_overflow_signed, /* complain_on_overflow */
564 bfd_elf_generic_reloc, /* special_function */
565 "R_PPC_LOCAL24PC", /* name */
566 FALSE, /* partial_inplace */
567 0, /* src_mask */
568 0x3fffffc, /* dst_mask */
569 TRUE), /* pcrel_offset */
570
571 /* Like R_PPC_ADDR32, but may be unaligned. */
572 HOWTO (R_PPC_UADDR32, /* type */
573 0, /* rightshift */
574 2, /* size (0 = byte, 1 = short, 2 = long) */
575 32, /* bitsize */
576 FALSE, /* pc_relative */
577 0, /* bitpos */
578 complain_overflow_dont, /* complain_on_overflow */
579 bfd_elf_generic_reloc, /* special_function */
580 "R_PPC_UADDR32", /* name */
581 FALSE, /* partial_inplace */
582 0, /* src_mask */
583 0xffffffff, /* dst_mask */
584 FALSE), /* pcrel_offset */
585
586 /* Like R_PPC_ADDR16, but may be unaligned. */
587 HOWTO (R_PPC_UADDR16, /* type */
588 0, /* rightshift */
589 1, /* size (0 = byte, 1 = short, 2 = long) */
590 16, /* bitsize */
591 FALSE, /* pc_relative */
592 0, /* bitpos */
593 complain_overflow_bitfield, /* complain_on_overflow */
594 bfd_elf_generic_reloc, /* special_function */
595 "R_PPC_UADDR16", /* name */
596 FALSE, /* partial_inplace */
597 0, /* src_mask */
598 0xffff, /* dst_mask */
599 FALSE), /* pcrel_offset */
600
601 /* 32-bit PC relative */
602 HOWTO (R_PPC_REL32, /* type */
603 0, /* rightshift */
604 2, /* size (0 = byte, 1 = short, 2 = long) */
605 32, /* bitsize */
606 TRUE, /* pc_relative */
607 0, /* bitpos */
608 complain_overflow_dont, /* complain_on_overflow */
609 bfd_elf_generic_reloc, /* special_function */
610 "R_PPC_REL32", /* name */
611 FALSE, /* partial_inplace */
612 0, /* src_mask */
613 0xffffffff, /* dst_mask */
614 TRUE), /* pcrel_offset */
615
616 /* 32-bit relocation to the symbol's procedure linkage table.
617 FIXME: not supported. */
618 HOWTO (R_PPC_PLT32, /* type */
619 0, /* rightshift */
620 2, /* size (0 = byte, 1 = short, 2 = long) */
621 32, /* bitsize */
622 FALSE, /* pc_relative */
623 0, /* bitpos */
624 complain_overflow_dont, /* complain_on_overflow */
625 bfd_elf_generic_reloc, /* special_function */
626 "R_PPC_PLT32", /* name */
627 FALSE, /* partial_inplace */
628 0, /* src_mask */
629 0, /* dst_mask */
630 FALSE), /* pcrel_offset */
631
632 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
633 FIXME: not supported. */
634 HOWTO (R_PPC_PLTREL32, /* type */
635 0, /* rightshift */
636 2, /* size (0 = byte, 1 = short, 2 = long) */
637 32, /* bitsize */
638 TRUE, /* pc_relative */
639 0, /* bitpos */
640 complain_overflow_dont, /* complain_on_overflow */
641 bfd_elf_generic_reloc, /* special_function */
642 "R_PPC_PLTREL32", /* name */
643 FALSE, /* partial_inplace */
644 0, /* src_mask */
645 0, /* dst_mask */
646 TRUE), /* pcrel_offset */
647
648 /* Like R_PPC_ADDR16_LO, but referring to the PLT table entry for
649 the symbol. */
650 HOWTO (R_PPC_PLT16_LO, /* type */
651 0, /* rightshift */
652 1, /* size (0 = byte, 1 = short, 2 = long) */
653 16, /* bitsize */
654 FALSE, /* pc_relative */
655 0, /* bitpos */
656 complain_overflow_dont, /* complain_on_overflow */
657 bfd_elf_generic_reloc, /* special_function */
658 "R_PPC_PLT16_LO", /* name */
659 FALSE, /* partial_inplace */
660 0, /* src_mask */
661 0xffff, /* dst_mask */
662 FALSE), /* pcrel_offset */
663
664 /* Like R_PPC_ADDR16_HI, but referring to the PLT table entry for
665 the symbol. */
666 HOWTO (R_PPC_PLT16_HI, /* type */
667 16, /* rightshift */
668 1, /* size (0 = byte, 1 = short, 2 = long) */
669 16, /* bitsize */
670 FALSE, /* pc_relative */
671 0, /* bitpos */
672 complain_overflow_dont, /* complain_on_overflow */
673 bfd_elf_generic_reloc, /* special_function */
674 "R_PPC_PLT16_HI", /* name */
675 FALSE, /* partial_inplace */
676 0, /* src_mask */
677 0xffff, /* dst_mask */
678 FALSE), /* pcrel_offset */
679
680 /* Like R_PPC_ADDR16_HA, but referring to the PLT table entry for
681 the symbol. */
682 HOWTO (R_PPC_PLT16_HA, /* type */
683 16, /* rightshift */
684 1, /* size (0 = byte, 1 = short, 2 = long) */
685 16, /* bitsize */
686 FALSE, /* pc_relative */
687 0, /* bitpos */
688 complain_overflow_dont, /* complain_on_overflow */
689 ppc_elf_addr16_ha_reloc, /* special_function */
690 "R_PPC_PLT16_HA", /* name */
691 FALSE, /* partial_inplace */
692 0, /* src_mask */
693 0xffff, /* dst_mask */
694 FALSE), /* pcrel_offset */
695
696 /* A sign-extended 16 bit value relative to _SDA_BASE_, for use with
697 small data items. */
698 HOWTO (R_PPC_SDAREL16, /* type */
699 0, /* rightshift */
700 1, /* size (0 = byte, 1 = short, 2 = long) */
701 16, /* bitsize */
702 FALSE, /* pc_relative */
703 0, /* bitpos */
704 complain_overflow_signed, /* complain_on_overflow */
705 bfd_elf_generic_reloc, /* special_function */
706 "R_PPC_SDAREL16", /* name */
707 FALSE, /* partial_inplace */
708 0, /* src_mask */
709 0xffff, /* dst_mask */
710 FALSE), /* pcrel_offset */
711
712 /* 16-bit section relative relocation. */
713 HOWTO (R_PPC_SECTOFF, /* type */
714 0, /* rightshift */
715 1, /* size (0 = byte, 1 = short, 2 = long) */
716 16, /* bitsize */
717 FALSE, /* pc_relative */
718 0, /* bitpos */
719 complain_overflow_signed, /* complain_on_overflow */
720 bfd_elf_generic_reloc, /* special_function */
721 "R_PPC_SECTOFF", /* name */
722 FALSE, /* partial_inplace */
723 0, /* src_mask */
724 0xffff, /* dst_mask */
725 FALSE), /* pcrel_offset */
726
727 /* 16-bit lower half section relative relocation. */
728 HOWTO (R_PPC_SECTOFF_LO, /* type */
729 0, /* rightshift */
730 1, /* size (0 = byte, 1 = short, 2 = long) */
731 16, /* bitsize */
732 FALSE, /* pc_relative */
733 0, /* bitpos */
734 complain_overflow_dont, /* complain_on_overflow */
735 bfd_elf_generic_reloc, /* special_function */
736 "R_PPC_SECTOFF_LO", /* name */
737 FALSE, /* partial_inplace */
738 0, /* src_mask */
739 0xffff, /* dst_mask */
740 FALSE), /* pcrel_offset */
741
742 /* 16-bit upper half section relative relocation. */
743 HOWTO (R_PPC_SECTOFF_HI, /* type */
744 16, /* rightshift */
745 1, /* size (0 = byte, 1 = short, 2 = long) */
746 16, /* bitsize */
747 FALSE, /* pc_relative */
748 0, /* bitpos */
749 complain_overflow_dont, /* complain_on_overflow */
750 bfd_elf_generic_reloc, /* special_function */
751 "R_PPC_SECTOFF_HI", /* name */
752 FALSE, /* partial_inplace */
753 0, /* src_mask */
754 0xffff, /* dst_mask */
755 FALSE), /* pcrel_offset */
756
757 /* 16-bit upper half adjusted section relative relocation. */
758 HOWTO (R_PPC_SECTOFF_HA, /* type */
759 16, /* rightshift */
760 1, /* size (0 = byte, 1 = short, 2 = long) */
761 16, /* bitsize */
762 FALSE, /* pc_relative */
763 0, /* bitpos */
764 complain_overflow_dont, /* complain_on_overflow */
765 ppc_elf_addr16_ha_reloc, /* special_function */
766 "R_PPC_SECTOFF_HA", /* name */
767 FALSE, /* partial_inplace */
768 0, /* src_mask */
769 0xffff, /* dst_mask */
770 FALSE), /* pcrel_offset */
771
772 /* Marker relocs for TLS. */
773 HOWTO (R_PPC_TLS,
774 0, /* rightshift */
775 2, /* size (0 = byte, 1 = short, 2 = long) */
776 32, /* bitsize */
777 FALSE, /* pc_relative */
778 0, /* bitpos */
779 complain_overflow_dont, /* complain_on_overflow */
780 bfd_elf_generic_reloc, /* special_function */
781 "R_PPC_TLS", /* name */
782 FALSE, /* partial_inplace */
783 0, /* src_mask */
784 0, /* dst_mask */
785 FALSE), /* pcrel_offset */
786
787 HOWTO (R_PPC_TLSGD,
788 0, /* rightshift */
789 2, /* size (0 = byte, 1 = short, 2 = long) */
790 32, /* bitsize */
791 FALSE, /* pc_relative */
792 0, /* bitpos */
793 complain_overflow_dont, /* complain_on_overflow */
794 bfd_elf_generic_reloc, /* special_function */
795 "R_PPC_TLSGD", /* name */
796 FALSE, /* partial_inplace */
797 0, /* src_mask */
798 0, /* dst_mask */
799 FALSE), /* pcrel_offset */
800
801 HOWTO (R_PPC_TLSLD,
802 0, /* rightshift */
803 2, /* size (0 = byte, 1 = short, 2 = long) */
804 32, /* bitsize */
805 FALSE, /* pc_relative */
806 0, /* bitpos */
807 complain_overflow_dont, /* complain_on_overflow */
808 bfd_elf_generic_reloc, /* special_function */
809 "R_PPC_TLSLD", /* name */
810 FALSE, /* partial_inplace */
811 0, /* src_mask */
812 0, /* dst_mask */
813 FALSE), /* pcrel_offset */
814
815 /* Computes the load module index of the load module that contains the
816 definition of its TLS sym. */
817 HOWTO (R_PPC_DTPMOD32,
818 0, /* rightshift */
819 2, /* size (0 = byte, 1 = short, 2 = long) */
820 32, /* bitsize */
821 FALSE, /* pc_relative */
822 0, /* bitpos */
823 complain_overflow_dont, /* complain_on_overflow */
824 ppc_elf_unhandled_reloc, /* special_function */
825 "R_PPC_DTPMOD32", /* name */
826 FALSE, /* partial_inplace */
827 0, /* src_mask */
828 0xffffffff, /* dst_mask */
829 FALSE), /* pcrel_offset */
830
831 /* Computes a dtv-relative displacement, the difference between the value
832 of sym+add and the base address of the thread-local storage block that
833 contains the definition of sym, minus 0x8000. */
834 HOWTO (R_PPC_DTPREL32,
835 0, /* rightshift */
836 2, /* size (0 = byte, 1 = short, 2 = long) */
837 32, /* bitsize */
838 FALSE, /* pc_relative */
839 0, /* bitpos */
840 complain_overflow_dont, /* complain_on_overflow */
841 ppc_elf_unhandled_reloc, /* special_function */
842 "R_PPC_DTPREL32", /* name */
843 FALSE, /* partial_inplace */
844 0, /* src_mask */
845 0xffffffff, /* dst_mask */
846 FALSE), /* pcrel_offset */
847
848 /* A 16 bit dtprel reloc. */
849 HOWTO (R_PPC_DTPREL16,
850 0, /* rightshift */
851 1, /* size (0 = byte, 1 = short, 2 = long) */
852 16, /* bitsize */
853 FALSE, /* pc_relative */
854 0, /* bitpos */
855 complain_overflow_signed, /* complain_on_overflow */
856 ppc_elf_unhandled_reloc, /* special_function */
857 "R_PPC_DTPREL16", /* name */
858 FALSE, /* partial_inplace */
859 0, /* src_mask */
860 0xffff, /* dst_mask */
861 FALSE), /* pcrel_offset */
862
863 /* Like DTPREL16, but no overflow. */
864 HOWTO (R_PPC_DTPREL16_LO,
865 0, /* rightshift */
866 1, /* size (0 = byte, 1 = short, 2 = long) */
867 16, /* bitsize */
868 FALSE, /* pc_relative */
869 0, /* bitpos */
870 complain_overflow_dont, /* complain_on_overflow */
871 ppc_elf_unhandled_reloc, /* special_function */
872 "R_PPC_DTPREL16_LO", /* name */
873 FALSE, /* partial_inplace */
874 0, /* src_mask */
875 0xffff, /* dst_mask */
876 FALSE), /* pcrel_offset */
877
878 /* Like DTPREL16_LO, but next higher group of 16 bits. */
879 HOWTO (R_PPC_DTPREL16_HI,
880 16, /* rightshift */
881 1, /* size (0 = byte, 1 = short, 2 = long) */
882 16, /* bitsize */
883 FALSE, /* pc_relative */
884 0, /* bitpos */
885 complain_overflow_dont, /* complain_on_overflow */
886 ppc_elf_unhandled_reloc, /* special_function */
887 "R_PPC_DTPREL16_HI", /* name */
888 FALSE, /* partial_inplace */
889 0, /* src_mask */
890 0xffff, /* dst_mask */
891 FALSE), /* pcrel_offset */
892
893 /* Like DTPREL16_HI, but adjust for low 16 bits. */
894 HOWTO (R_PPC_DTPREL16_HA,
895 16, /* rightshift */
896 1, /* size (0 = byte, 1 = short, 2 = long) */
897 16, /* bitsize */
898 FALSE, /* pc_relative */
899 0, /* bitpos */
900 complain_overflow_dont, /* complain_on_overflow */
901 ppc_elf_unhandled_reloc, /* special_function */
902 "R_PPC_DTPREL16_HA", /* name */
903 FALSE, /* partial_inplace */
904 0, /* src_mask */
905 0xffff, /* dst_mask */
906 FALSE), /* pcrel_offset */
907
908 /* Computes a tp-relative displacement, the difference between the value of
909 sym+add and the value of the thread pointer (r13). */
910 HOWTO (R_PPC_TPREL32,
911 0, /* rightshift */
912 2, /* size (0 = byte, 1 = short, 2 = long) */
913 32, /* bitsize */
914 FALSE, /* pc_relative */
915 0, /* bitpos */
916 complain_overflow_dont, /* complain_on_overflow */
917 ppc_elf_unhandled_reloc, /* special_function */
918 "R_PPC_TPREL32", /* name */
919 FALSE, /* partial_inplace */
920 0, /* src_mask */
921 0xffffffff, /* dst_mask */
922 FALSE), /* pcrel_offset */
923
924 /* A 16 bit tprel reloc. */
925 HOWTO (R_PPC_TPREL16,
926 0, /* rightshift */
927 1, /* size (0 = byte, 1 = short, 2 = long) */
928 16, /* bitsize */
929 FALSE, /* pc_relative */
930 0, /* bitpos */
931 complain_overflow_signed, /* complain_on_overflow */
932 ppc_elf_unhandled_reloc, /* special_function */
933 "R_PPC_TPREL16", /* name */
934 FALSE, /* partial_inplace */
935 0, /* src_mask */
936 0xffff, /* dst_mask */
937 FALSE), /* pcrel_offset */
938
939 /* Like TPREL16, but no overflow. */
940 HOWTO (R_PPC_TPREL16_LO,
941 0, /* rightshift */
942 1, /* size (0 = byte, 1 = short, 2 = long) */
943 16, /* bitsize */
944 FALSE, /* pc_relative */
945 0, /* bitpos */
946 complain_overflow_dont, /* complain_on_overflow */
947 ppc_elf_unhandled_reloc, /* special_function */
948 "R_PPC_TPREL16_LO", /* name */
949 FALSE, /* partial_inplace */
950 0, /* src_mask */
951 0xffff, /* dst_mask */
952 FALSE), /* pcrel_offset */
953
954 /* Like TPREL16_LO, but next higher group of 16 bits. */
955 HOWTO (R_PPC_TPREL16_HI,
956 16, /* rightshift */
957 1, /* size (0 = byte, 1 = short, 2 = long) */
958 16, /* bitsize */
959 FALSE, /* pc_relative */
960 0, /* bitpos */
961 complain_overflow_dont, /* complain_on_overflow */
962 ppc_elf_unhandled_reloc, /* special_function */
963 "R_PPC_TPREL16_HI", /* name */
964 FALSE, /* partial_inplace */
965 0, /* src_mask */
966 0xffff, /* dst_mask */
967 FALSE), /* pcrel_offset */
968
969 /* Like TPREL16_HI, but adjust for low 16 bits. */
970 HOWTO (R_PPC_TPREL16_HA,
971 16, /* rightshift */
972 1, /* size (0 = byte, 1 = short, 2 = long) */
973 16, /* bitsize */
974 FALSE, /* pc_relative */
975 0, /* bitpos */
976 complain_overflow_dont, /* complain_on_overflow */
977 ppc_elf_unhandled_reloc, /* special_function */
978 "R_PPC_TPREL16_HA", /* name */
979 FALSE, /* partial_inplace */
980 0, /* src_mask */
981 0xffff, /* dst_mask */
982 FALSE), /* pcrel_offset */
983
984 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
985 with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
986 to the first entry. */
987 HOWTO (R_PPC_GOT_TLSGD16,
988 0, /* rightshift */
989 1, /* size (0 = byte, 1 = short, 2 = long) */
990 16, /* bitsize */
991 FALSE, /* pc_relative */
992 0, /* bitpos */
993 complain_overflow_signed, /* complain_on_overflow */
994 ppc_elf_unhandled_reloc, /* special_function */
995 "R_PPC_GOT_TLSGD16", /* name */
996 FALSE, /* partial_inplace */
997 0, /* src_mask */
998 0xffff, /* dst_mask */
999 FALSE), /* pcrel_offset */
1000
1001 /* Like GOT_TLSGD16, but no overflow. */
1002 HOWTO (R_PPC_GOT_TLSGD16_LO,
1003 0, /* rightshift */
1004 1, /* size (0 = byte, 1 = short, 2 = long) */
1005 16, /* bitsize */
1006 FALSE, /* pc_relative */
1007 0, /* bitpos */
1008 complain_overflow_dont, /* complain_on_overflow */
1009 ppc_elf_unhandled_reloc, /* special_function */
1010 "R_PPC_GOT_TLSGD16_LO", /* name */
1011 FALSE, /* partial_inplace */
1012 0, /* src_mask */
1013 0xffff, /* dst_mask */
1014 FALSE), /* pcrel_offset */
1015
1016 /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
1017 HOWTO (R_PPC_GOT_TLSGD16_HI,
1018 16, /* rightshift */
1019 1, /* size (0 = byte, 1 = short, 2 = long) */
1020 16, /* bitsize */
1021 FALSE, /* pc_relative */
1022 0, /* bitpos */
1023 complain_overflow_dont, /* complain_on_overflow */
1024 ppc_elf_unhandled_reloc, /* special_function */
1025 "R_PPC_GOT_TLSGD16_HI", /* name */
1026 FALSE, /* partial_inplace */
1027 0, /* src_mask */
1028 0xffff, /* dst_mask */
1029 FALSE), /* pcrel_offset */
1030
1031 /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
1032 HOWTO (R_PPC_GOT_TLSGD16_HA,
1033 16, /* rightshift */
1034 1, /* size (0 = byte, 1 = short, 2 = long) */
1035 16, /* bitsize */
1036 FALSE, /* pc_relative */
1037 0, /* bitpos */
1038 complain_overflow_dont, /* complain_on_overflow */
1039 ppc_elf_unhandled_reloc, /* special_function */
1040 "R_PPC_GOT_TLSGD16_HA", /* name */
1041 FALSE, /* partial_inplace */
1042 0, /* src_mask */
1043 0xffff, /* dst_mask */
1044 FALSE), /* pcrel_offset */
1045
1046 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1047 with values (sym+add)@dtpmod and zero, and computes the offset to the
1048 first entry. */
1049 HOWTO (R_PPC_GOT_TLSLD16,
1050 0, /* rightshift */
1051 1, /* size (0 = byte, 1 = short, 2 = long) */
1052 16, /* bitsize */
1053 FALSE, /* pc_relative */
1054 0, /* bitpos */
1055 complain_overflow_signed, /* complain_on_overflow */
1056 ppc_elf_unhandled_reloc, /* special_function */
1057 "R_PPC_GOT_TLSLD16", /* name */
1058 FALSE, /* partial_inplace */
1059 0, /* src_mask */
1060 0xffff, /* dst_mask */
1061 FALSE), /* pcrel_offset */
1062
1063 /* Like GOT_TLSLD16, but no overflow. */
1064 HOWTO (R_PPC_GOT_TLSLD16_LO,
1065 0, /* rightshift */
1066 1, /* size (0 = byte, 1 = short, 2 = long) */
1067 16, /* bitsize */
1068 FALSE, /* pc_relative */
1069 0, /* bitpos */
1070 complain_overflow_dont, /* complain_on_overflow */
1071 ppc_elf_unhandled_reloc, /* special_function */
1072 "R_PPC_GOT_TLSLD16_LO", /* name */
1073 FALSE, /* partial_inplace */
1074 0, /* src_mask */
1075 0xffff, /* dst_mask */
1076 FALSE), /* pcrel_offset */
1077
1078 /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
1079 HOWTO (R_PPC_GOT_TLSLD16_HI,
1080 16, /* rightshift */
1081 1, /* size (0 = byte, 1 = short, 2 = long) */
1082 16, /* bitsize */
1083 FALSE, /* pc_relative */
1084 0, /* bitpos */
1085 complain_overflow_dont, /* complain_on_overflow */
1086 ppc_elf_unhandled_reloc, /* special_function */
1087 "R_PPC_GOT_TLSLD16_HI", /* name */
1088 FALSE, /* partial_inplace */
1089 0, /* src_mask */
1090 0xffff, /* dst_mask */
1091 FALSE), /* pcrel_offset */
1092
1093 /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
1094 HOWTO (R_PPC_GOT_TLSLD16_HA,
1095 16, /* rightshift */
1096 1, /* size (0 = byte, 1 = short, 2 = long) */
1097 16, /* bitsize */
1098 FALSE, /* pc_relative */
1099 0, /* bitpos */
1100 complain_overflow_dont, /* complain_on_overflow */
1101 ppc_elf_unhandled_reloc, /* special_function */
1102 "R_PPC_GOT_TLSLD16_HA", /* name */
1103 FALSE, /* partial_inplace */
1104 0, /* src_mask */
1105 0xffff, /* dst_mask */
1106 FALSE), /* pcrel_offset */
1107
1108 /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
1109 the offset to the entry. */
1110 HOWTO (R_PPC_GOT_DTPREL16,
1111 0, /* rightshift */
1112 1, /* size (0 = byte, 1 = short, 2 = long) */
1113 16, /* bitsize */
1114 FALSE, /* pc_relative */
1115 0, /* bitpos */
1116 complain_overflow_signed, /* complain_on_overflow */
1117 ppc_elf_unhandled_reloc, /* special_function */
1118 "R_PPC_GOT_DTPREL16", /* name */
1119 FALSE, /* partial_inplace */
1120 0, /* src_mask */
1121 0xffff, /* dst_mask */
1122 FALSE), /* pcrel_offset */
1123
1124 /* Like GOT_DTPREL16, but no overflow. */
1125 HOWTO (R_PPC_GOT_DTPREL16_LO,
1126 0, /* rightshift */
1127 1, /* size (0 = byte, 1 = short, 2 = long) */
1128 16, /* bitsize */
1129 FALSE, /* pc_relative */
1130 0, /* bitpos */
1131 complain_overflow_dont, /* complain_on_overflow */
1132 ppc_elf_unhandled_reloc, /* special_function */
1133 "R_PPC_GOT_DTPREL16_LO", /* name */
1134 FALSE, /* partial_inplace */
1135 0, /* src_mask */
1136 0xffff, /* dst_mask */
1137 FALSE), /* pcrel_offset */
1138
1139 /* Like GOT_DTPREL16_LO, but next higher group of 16 bits. */
1140 HOWTO (R_PPC_GOT_DTPREL16_HI,
1141 16, /* rightshift */
1142 1, /* size (0 = byte, 1 = short, 2 = long) */
1143 16, /* bitsize */
1144 FALSE, /* pc_relative */
1145 0, /* bitpos */
1146 complain_overflow_dont, /* complain_on_overflow */
1147 ppc_elf_unhandled_reloc, /* special_function */
1148 "R_PPC_GOT_DTPREL16_HI", /* name */
1149 FALSE, /* partial_inplace */
1150 0, /* src_mask */
1151 0xffff, /* dst_mask */
1152 FALSE), /* pcrel_offset */
1153
1154 /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
1155 HOWTO (R_PPC_GOT_DTPREL16_HA,
1156 16, /* rightshift */
1157 1, /* size (0 = byte, 1 = short, 2 = long) */
1158 16, /* bitsize */
1159 FALSE, /* pc_relative */
1160 0, /* bitpos */
1161 complain_overflow_dont, /* complain_on_overflow */
1162 ppc_elf_unhandled_reloc, /* special_function */
1163 "R_PPC_GOT_DTPREL16_HA", /* name */
1164 FALSE, /* partial_inplace */
1165 0, /* src_mask */
1166 0xffff, /* dst_mask */
1167 FALSE), /* pcrel_offset */
1168
1169 /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
1170 offset to the entry. */
1171 HOWTO (R_PPC_GOT_TPREL16,
1172 0, /* rightshift */
1173 1, /* size (0 = byte, 1 = short, 2 = long) */
1174 16, /* bitsize */
1175 FALSE, /* pc_relative */
1176 0, /* bitpos */
1177 complain_overflow_signed, /* complain_on_overflow */
1178 ppc_elf_unhandled_reloc, /* special_function */
1179 "R_PPC_GOT_TPREL16", /* name */
1180 FALSE, /* partial_inplace */
1181 0, /* src_mask */
1182 0xffff, /* dst_mask */
1183 FALSE), /* pcrel_offset */
1184
1185 /* Like GOT_TPREL16, but no overflow. */
1186 HOWTO (R_PPC_GOT_TPREL16_LO,
1187 0, /* rightshift */
1188 1, /* size (0 = byte, 1 = short, 2 = long) */
1189 16, /* bitsize */
1190 FALSE, /* pc_relative */
1191 0, /* bitpos */
1192 complain_overflow_dont, /* complain_on_overflow */
1193 ppc_elf_unhandled_reloc, /* special_function */
1194 "R_PPC_GOT_TPREL16_LO", /* name */
1195 FALSE, /* partial_inplace */
1196 0, /* src_mask */
1197 0xffff, /* dst_mask */
1198 FALSE), /* pcrel_offset */
1199
1200 /* Like GOT_TPREL16_LO, but next higher group of 16 bits. */
1201 HOWTO (R_PPC_GOT_TPREL16_HI,
1202 16, /* rightshift */
1203 1, /* size (0 = byte, 1 = short, 2 = long) */
1204 16, /* bitsize */
1205 FALSE, /* pc_relative */
1206 0, /* bitpos */
1207 complain_overflow_dont, /* complain_on_overflow */
1208 ppc_elf_unhandled_reloc, /* special_function */
1209 "R_PPC_GOT_TPREL16_HI", /* name */
1210 FALSE, /* partial_inplace */
1211 0, /* src_mask */
1212 0xffff, /* dst_mask */
1213 FALSE), /* pcrel_offset */
1214
1215 /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
1216 HOWTO (R_PPC_GOT_TPREL16_HA,
1217 16, /* rightshift */
1218 1, /* size (0 = byte, 1 = short, 2 = long) */
1219 16, /* bitsize */
1220 FALSE, /* pc_relative */
1221 0, /* bitpos */
1222 complain_overflow_dont, /* complain_on_overflow */
1223 ppc_elf_unhandled_reloc, /* special_function */
1224 "R_PPC_GOT_TPREL16_HA", /* name */
1225 FALSE, /* partial_inplace */
1226 0, /* src_mask */
1227 0xffff, /* dst_mask */
1228 FALSE), /* pcrel_offset */
1229
1230 /* The remaining relocs are from the Embedded ELF ABI, and are not
1231 in the SVR4 ELF ABI. */
1232
1233 /* 32 bit value resulting from the addend minus the symbol. */
1234 HOWTO (R_PPC_EMB_NADDR32, /* type */
1235 0, /* rightshift */
1236 2, /* size (0 = byte, 1 = short, 2 = long) */
1237 32, /* bitsize */
1238 FALSE, /* pc_relative */
1239 0, /* bitpos */
1240 complain_overflow_dont, /* complain_on_overflow */
1241 bfd_elf_generic_reloc, /* special_function */
1242 "R_PPC_EMB_NADDR32", /* name */
1243 FALSE, /* partial_inplace */
1244 0, /* src_mask */
1245 0xffffffff, /* dst_mask */
1246 FALSE), /* pcrel_offset */
1247
1248 /* 16 bit value resulting from the addend minus the symbol. */
1249 HOWTO (R_PPC_EMB_NADDR16, /* type */
1250 0, /* rightshift */
1251 1, /* size (0 = byte, 1 = short, 2 = long) */
1252 16, /* bitsize */
1253 FALSE, /* pc_relative */
1254 0, /* bitpos */
1255 complain_overflow_signed, /* complain_on_overflow */
1256 bfd_elf_generic_reloc, /* special_function */
1257 "R_PPC_EMB_NADDR16", /* name */
1258 FALSE, /* partial_inplace */
1259 0, /* src_mask */
1260 0xffff, /* dst_mask */
1261 FALSE), /* pcrel_offset */
1262
1263 /* 16 bit value resulting from the addend minus the symbol. */
1264 HOWTO (R_PPC_EMB_NADDR16_LO, /* type */
1265 0, /* rightshift */
1266 1, /* size (0 = byte, 1 = short, 2 = long) */
1267 16, /* bitsize */
1268 FALSE, /* pc_relative */
1269 0, /* bitpos */
1270 complain_overflow_dont,/* complain_on_overflow */
1271 bfd_elf_generic_reloc, /* special_function */
1272 "R_PPC_EMB_ADDR16_LO", /* name */
1273 FALSE, /* partial_inplace */
1274 0, /* src_mask */
1275 0xffff, /* dst_mask */
1276 FALSE), /* pcrel_offset */
1277
1278 /* The high order 16 bits of the addend minus the symbol. */
1279 HOWTO (R_PPC_EMB_NADDR16_HI, /* type */
1280 16, /* rightshift */
1281 1, /* size (0 = byte, 1 = short, 2 = long) */
1282 16, /* bitsize */
1283 FALSE, /* pc_relative */
1284 0, /* bitpos */
1285 complain_overflow_dont, /* complain_on_overflow */
1286 bfd_elf_generic_reloc, /* special_function */
1287 "R_PPC_EMB_NADDR16_HI", /* name */
1288 FALSE, /* partial_inplace */
1289 0, /* src_mask */
1290 0xffff, /* dst_mask */
1291 FALSE), /* pcrel_offset */
1292
1293 /* The high order 16 bits of the result of the addend minus the address,
1294 plus 1 if the contents of the low 16 bits, treated as a signed number,
1295 is negative. */
1296 HOWTO (R_PPC_EMB_NADDR16_HA, /* type */
1297 16, /* rightshift */
1298 1, /* size (0 = byte, 1 = short, 2 = long) */
1299 16, /* bitsize */
1300 FALSE, /* pc_relative */
1301 0, /* bitpos */
1302 complain_overflow_dont, /* complain_on_overflow */
1303 ppc_elf_addr16_ha_reloc, /* special_function */
1304 "R_PPC_EMB_NADDR16_HA", /* name */
1305 FALSE, /* partial_inplace */
1306 0, /* src_mask */
1307 0xffff, /* dst_mask */
1308 FALSE), /* pcrel_offset */
1309
1310 /* 16 bit value resulting from allocating a 4 byte word to hold an
1311 address in the .sdata section, and returning the offset from
1312 _SDA_BASE_ for that relocation. */
1313 HOWTO (R_PPC_EMB_SDAI16, /* type */
1314 0, /* rightshift */
1315 1, /* size (0 = byte, 1 = short, 2 = long) */
1316 16, /* bitsize */
1317 FALSE, /* pc_relative */
1318 0, /* bitpos */
1319 complain_overflow_signed, /* complain_on_overflow */
1320 bfd_elf_generic_reloc, /* special_function */
1321 "R_PPC_EMB_SDAI16", /* name */
1322 FALSE, /* partial_inplace */
1323 0, /* src_mask */
1324 0xffff, /* dst_mask */
1325 FALSE), /* pcrel_offset */
1326
1327 /* 16 bit value resulting from allocating a 4 byte word to hold an
1328 address in the .sdata2 section, and returning the offset from
1329 _SDA2_BASE_ for that relocation. */
1330 HOWTO (R_PPC_EMB_SDA2I16, /* type */
1331 0, /* rightshift */
1332 1, /* size (0 = byte, 1 = short, 2 = long) */
1333 16, /* bitsize */
1334 FALSE, /* pc_relative */
1335 0, /* bitpos */
1336 complain_overflow_signed, /* complain_on_overflow */
1337 bfd_elf_generic_reloc, /* special_function */
1338 "R_PPC_EMB_SDA2I16", /* name */
1339 FALSE, /* partial_inplace */
1340 0, /* src_mask */
1341 0xffff, /* dst_mask */
1342 FALSE), /* pcrel_offset */
1343
1344 /* A sign-extended 16 bit value relative to _SDA2_BASE_, for use with
1345 small data items. */
1346 HOWTO (R_PPC_EMB_SDA2REL, /* type */
1347 0, /* rightshift */
1348 1, /* size (0 = byte, 1 = short, 2 = long) */
1349 16, /* bitsize */
1350 FALSE, /* pc_relative */
1351 0, /* bitpos */
1352 complain_overflow_signed, /* complain_on_overflow */
1353 bfd_elf_generic_reloc, /* special_function */
1354 "R_PPC_EMB_SDA2REL", /* name */
1355 FALSE, /* partial_inplace */
1356 0, /* src_mask */
1357 0xffff, /* dst_mask */
1358 FALSE), /* pcrel_offset */
1359
1360 /* Relocate against either _SDA_BASE_ or _SDA2_BASE_, filling in the 16 bit
1361 signed offset from the appropriate base, and filling in the register
1362 field with the appropriate register (0, 2, or 13). */
1363 HOWTO (R_PPC_EMB_SDA21, /* type */
1364 0, /* rightshift */
1365 2, /* size (0 = byte, 1 = short, 2 = long) */
1366 16, /* bitsize */
1367 FALSE, /* pc_relative */
1368 0, /* bitpos */
1369 complain_overflow_signed, /* complain_on_overflow */
1370 bfd_elf_generic_reloc, /* special_function */
1371 "R_PPC_EMB_SDA21", /* name */
1372 FALSE, /* partial_inplace */
1373 0, /* src_mask */
1374 0xffff, /* dst_mask */
1375 FALSE), /* pcrel_offset */
1376
1377 /* Relocation not handled: R_PPC_EMB_MRKREF */
1378 /* Relocation not handled: R_PPC_EMB_RELSEC16 */
1379 /* Relocation not handled: R_PPC_EMB_RELST_LO */
1380 /* Relocation not handled: R_PPC_EMB_RELST_HI */
1381 /* Relocation not handled: R_PPC_EMB_RELST_HA */
1382 /* Relocation not handled: R_PPC_EMB_BIT_FLD */
1383
1384 /* PC relative relocation against either _SDA_BASE_ or _SDA2_BASE_, filling
1385 in the 16 bit signed offset from the appropriate base, and filling in the
1386 register field with the appropriate register (0, 2, or 13). */
1387 HOWTO (R_PPC_EMB_RELSDA, /* type */
1388 0, /* rightshift */
1389 1, /* size (0 = byte, 1 = short, 2 = long) */
1390 16, /* bitsize */
1391 FALSE, /* pc_relative */
1392 0, /* bitpos */
1393 complain_overflow_signed, /* complain_on_overflow */
1394 bfd_elf_generic_reloc, /* special_function */
1395 "R_PPC_EMB_RELSDA", /* name */
1396 FALSE, /* partial_inplace */
1397 0, /* src_mask */
1398 0xffff, /* dst_mask */
1399 FALSE), /* pcrel_offset */
1400
1401 /* A relative 8 bit branch. */
1402 HOWTO (R_PPC_VLE_REL8, /* type */
1403 1, /* rightshift */
1404 1, /* size (0 = byte, 1 = short, 2 = long) */
1405 8, /* bitsize */
1406 TRUE, /* pc_relative */
1407 0, /* bitpos */
1408 complain_overflow_signed, /* complain_on_overflow */
1409 bfd_elf_generic_reloc, /* special_function */
1410 "R_PPC_VLE_REL8", /* name */
1411 FALSE, /* partial_inplace */
1412 0, /* src_mask */
1413 0xff, /* dst_mask */
1414 TRUE), /* pcrel_offset */
1415
1416 /* A relative 15 bit branch. */
1417 HOWTO (R_PPC_VLE_REL15, /* type */
1418 1, /* rightshift */
1419 2, /* size (0 = byte, 1 = short, 2 = long) */
1420 15, /* bitsize */
1421 TRUE, /* pc_relative */
1422 1, /* bitpos */
1423 complain_overflow_signed, /* complain_on_overflow */
1424 bfd_elf_generic_reloc, /* special_function */
1425 "R_PPC_VLE_REL15", /* name */
1426 FALSE, /* partial_inplace */
1427 0, /* src_mask */
1428 0xfe, /* dst_mask */
1429 TRUE), /* pcrel_offset */
1430
1431 /* A relative 24 bit branch. */
1432 HOWTO (R_PPC_VLE_REL24, /* type */
1433 1, /* rightshift */
1434 2, /* size (0 = byte, 1 = short, 2 = long) */
1435 24, /* bitsize */
1436 TRUE, /* pc_relative */
1437 1, /* bitpos */
1438 complain_overflow_signed, /* complain_on_overflow */
1439 bfd_elf_generic_reloc, /* special_function */
1440 "R_PPC_VLE_REL24", /* name */
1441 FALSE, /* partial_inplace */
1442 0, /* src_mask */
1443 0x1fffffe, /* dst_mask */
1444 TRUE), /* pcrel_offset */
1445
1446 /* The 16 LSBS in split16a format. */
1447 HOWTO (R_PPC_VLE_LO16A, /* type */
1448 0, /* rightshift */
1449 2, /* size (0 = byte, 1 = short, 2 = long) */
1450 16, /* bitsize */
1451 FALSE, /* pc_relative */
1452 0, /* bitpos */
1453 complain_overflow_dont, /* complain_on_overflow */
1454 bfd_elf_generic_reloc, /* special_function */
1455 "R_PPC_VLE_LO16A", /* name */
1456 FALSE, /* partial_inplace */
1457 0, /* src_mask */
1458 0x1f007ff, /* dst_mask */
1459 FALSE), /* pcrel_offset */
1460
1461 /* The 16 LSBS in split16d format. */
1462 HOWTO (R_PPC_VLE_LO16D, /* type */
1463 0, /* rightshift */
1464 2, /* size (0 = byte, 1 = short, 2 = long) */
1465 16, /* bitsize */
1466 FALSE, /* pc_relative */
1467 0, /* bitpos */
1468 complain_overflow_dont, /* complain_on_overflow */
1469 bfd_elf_generic_reloc, /* special_function */
1470 "R_PPC_VLE_LO16D", /* name */
1471 FALSE, /* partial_inplace */
1472 0, /* src_mask */
1473 0x1f07ff, /* dst_mask */
1474 FALSE), /* pcrel_offset */
1475
1476 /* Bits 16-31 split16a format. */
1477 HOWTO (R_PPC_VLE_HI16A, /* type */
1478 16, /* rightshift */
1479 2, /* size (0 = byte, 1 = short, 2 = long) */
1480 16, /* bitsize */
1481 FALSE, /* pc_relative */
1482 0, /* bitpos */
1483 complain_overflow_dont, /* complain_on_overflow */
1484 bfd_elf_generic_reloc, /* special_function */
1485 "R_PPC_VLE_HI16A", /* name */
1486 FALSE, /* partial_inplace */
1487 0, /* src_mask */
1488 0x1f007ff, /* dst_mask */
1489 FALSE), /* pcrel_offset */
1490
1491 /* Bits 16-31 split16d format. */
1492 HOWTO (R_PPC_VLE_HI16D, /* type */
1493 16, /* rightshift */
1494 2, /* size (0 = byte, 1 = short, 2 = long) */
1495 16, /* bitsize */
1496 FALSE, /* pc_relative */
1497 0, /* bitpos */
1498 complain_overflow_dont, /* complain_on_overflow */
1499 bfd_elf_generic_reloc, /* special_function */
1500 "R_PPC_VLE_HI16D", /* name */
1501 FALSE, /* partial_inplace */
1502 0, /* src_mask */
1503 0x1f07ff, /* dst_mask */
1504 FALSE), /* pcrel_offset */
1505
1506 /* Bits 16-31 (High Adjusted) in split16a format. */
1507 HOWTO (R_PPC_VLE_HA16A, /* type */
1508 16, /* rightshift */
1509 2, /* size (0 = byte, 1 = short, 2 = long) */
1510 16, /* bitsize */
1511 FALSE, /* pc_relative */
1512 0, /* bitpos */
1513 complain_overflow_dont, /* complain_on_overflow */
1514 bfd_elf_generic_reloc, /* special_function */
1515 "R_PPC_VLE_HA16A", /* name */
1516 FALSE, /* partial_inplace */
1517 0, /* src_mask */
1518 0x1f007ff, /* dst_mask */
1519 FALSE), /* pcrel_offset */
1520
1521 /* Bits 16-31 (High Adjusted) in split16d format. */
1522 HOWTO (R_PPC_VLE_HA16D, /* type */
1523 16, /* rightshift */
1524 2, /* size (0 = byte, 1 = short, 2 = long) */
1525 16, /* bitsize */
1526 FALSE, /* pc_relative */
1527 0, /* bitpos */
1528 complain_overflow_dont, /* complain_on_overflow */
1529 bfd_elf_generic_reloc, /* special_function */
1530 "R_PPC_VLE_HA16D", /* name */
1531 FALSE, /* partial_inplace */
1532 0, /* src_mask */
1533 0x1f07ff, /* dst_mask */
1534 FALSE), /* pcrel_offset */
1535
1536 /* This reloc is like R_PPC_EMB_SDA21 but only applies to e_add16i
1537 instructions. If the register base is 0 then the linker changes
1538 the e_add16i to an e_li instruction. */
1539 HOWTO (R_PPC_VLE_SDA21, /* type */
1540 0, /* rightshift */
1541 2, /* size (0 = byte, 1 = short, 2 = long) */
1542 16, /* bitsize */
1543 FALSE, /* pc_relative */
1544 0, /* bitpos */
1545 complain_overflow_signed, /* complain_on_overflow */
1546 bfd_elf_generic_reloc, /* special_function */
1547 "R_PPC_VLE_SDA21", /* name */
1548 FALSE, /* partial_inplace */
1549 0, /* src_mask */
1550 0xffff, /* dst_mask */
1551 FALSE), /* pcrel_offset */
1552
1553 /* Like R_PPC_VLE_SDA21 but ignore overflow. */
1554 HOWTO (R_PPC_VLE_SDA21_LO, /* type */
1555 0, /* rightshift */
1556 2, /* size (0 = byte, 1 = short, 2 = long) */
1557 16, /* bitsize */
1558 FALSE, /* pc_relative */
1559 0, /* bitpos */
1560 complain_overflow_dont, /* complain_on_overflow */
1561 bfd_elf_generic_reloc, /* special_function */
1562 "R_PPC_VLE_SDA21_LO", /* name */
1563 FALSE, /* partial_inplace */
1564 0, /* src_mask */
1565 0xffff, /* dst_mask */
1566 FALSE), /* pcrel_offset */
1567
1568 /* The 16 LSBS relative to _SDA_BASE_ in split16a format. */
1569 HOWTO (R_PPC_VLE_SDAREL_LO16A,/* type */
1570 0, /* rightshift */
1571 2, /* size (0 = byte, 1 = short, 2 = long) */
1572 16, /* bitsize */
1573 FALSE, /* pc_relative */
1574 0, /* bitpos */
1575 complain_overflow_dont, /* complain_on_overflow */
1576 bfd_elf_generic_reloc, /* special_function */
1577 "R_PPC_VLE_SDAREL_LO16A", /* name */
1578 FALSE, /* partial_inplace */
1579 0, /* src_mask */
1580 0x1f007ff, /* dst_mask */
1581 FALSE), /* pcrel_offset */
1582
1583 /* The 16 LSBS relative to _SDA_BASE_ in split16d format. */
1584 HOWTO (R_PPC_VLE_SDAREL_LO16D, /* type */
1585 0, /* rightshift */
1586 2, /* size (0 = byte, 1 = short, 2 = long) */
1587 16, /* bitsize */
1588 FALSE, /* pc_relative */
1589 0, /* bitpos */
1590 complain_overflow_dont, /* complain_on_overflow */
1591 bfd_elf_generic_reloc, /* special_function */
1592 "R_PPC_VLE_SDAREL_LO16D", /* name */
1593 FALSE, /* partial_inplace */
1594 0, /* src_mask */
1595 0x1f07ff, /* dst_mask */
1596 FALSE), /* pcrel_offset */
1597
1598 /* Bits 16-31 relative to _SDA_BASE_ in split16a format. */
1599 HOWTO (R_PPC_VLE_SDAREL_HI16A, /* type */
1600 16, /* rightshift */
1601 2, /* size (0 = byte, 1 = short, 2 = long) */
1602 16, /* bitsize */
1603 FALSE, /* pc_relative */
1604 0, /* bitpos */
1605 complain_overflow_dont, /* complain_on_overflow */
1606 bfd_elf_generic_reloc, /* special_function */
1607 "R_PPC_VLE_SDAREL_HI16A", /* name */
1608 FALSE, /* partial_inplace */
1609 0, /* src_mask */
1610 0x1f007ff, /* dst_mask */
1611 FALSE), /* pcrel_offset */
1612
1613 /* Bits 16-31 relative to _SDA_BASE_ in split16d format. */
1614 HOWTO (R_PPC_VLE_SDAREL_HI16D, /* type */
1615 16, /* rightshift */
1616 2, /* size (0 = byte, 1 = short, 2 = long) */
1617 16, /* bitsize */
1618 FALSE, /* pc_relative */
1619 0, /* bitpos */
1620 complain_overflow_dont, /* complain_on_overflow */
1621 bfd_elf_generic_reloc, /* special_function */
1622 "R_PPC_VLE_SDAREL_HI16D", /* name */
1623 FALSE, /* partial_inplace */
1624 0, /* src_mask */
1625 0x1f07ff, /* dst_mask */
1626 FALSE), /* pcrel_offset */
1627
1628 /* Bits 16-31 (HA) relative to _SDA_BASE split16a format. */
1629 HOWTO (R_PPC_VLE_SDAREL_HA16A, /* type */
1630 16, /* rightshift */
1631 2, /* size (0 = byte, 1 = short, 2 = long) */
1632 16, /* bitsize */
1633 FALSE, /* pc_relative */
1634 0, /* bitpos */
1635 complain_overflow_dont, /* complain_on_overflow */
1636 bfd_elf_generic_reloc, /* special_function */
1637 "R_PPC_VLE_SDAREL_HA16A", /* name */
1638 FALSE, /* partial_inplace */
1639 0, /* src_mask */
1640 0x1f007ff, /* dst_mask */
1641 FALSE), /* pcrel_offset */
1642
1643 /* Bits 16-31 (HA) relative to _SDA_BASE split16d format. */
1644 HOWTO (R_PPC_VLE_SDAREL_HA16D, /* type */
1645 16, /* rightshift */
1646 2, /* size (0 = byte, 1 = short, 2 = long) */
1647 16, /* bitsize */
1648 FALSE, /* pc_relative */
1649 0, /* bitpos */
1650 complain_overflow_dont, /* complain_on_overflow */
1651 bfd_elf_generic_reloc, /* special_function */
1652 "R_PPC_VLE_SDAREL_HA16D", /* name */
1653 FALSE, /* partial_inplace */
1654 0, /* src_mask */
1655 0x1f07ff, /* dst_mask */
1656 FALSE), /* pcrel_offset */
1657
1658 HOWTO (R_PPC_IRELATIVE, /* type */
1659 0, /* rightshift */
1660 2, /* size (0 = byte, 1 = short, 2 = long) */
1661 32, /* bitsize */
1662 FALSE, /* pc_relative */
1663 0, /* bitpos */
1664 complain_overflow_dont, /* complain_on_overflow */
1665 bfd_elf_generic_reloc, /* special_function */
1666 "R_PPC_IRELATIVE", /* name */
1667 FALSE, /* partial_inplace */
1668 0, /* src_mask */
1669 0xffffffff, /* dst_mask */
1670 FALSE), /* pcrel_offset */
1671
1672 /* A 16 bit relative relocation. */
1673 HOWTO (R_PPC_REL16, /* type */
1674 0, /* rightshift */
1675 1, /* size (0 = byte, 1 = short, 2 = long) */
1676 16, /* bitsize */
1677 TRUE, /* pc_relative */
1678 0, /* bitpos */
1679 complain_overflow_signed, /* complain_on_overflow */
1680 bfd_elf_generic_reloc, /* special_function */
1681 "R_PPC_REL16", /* name */
1682 FALSE, /* partial_inplace */
1683 0, /* src_mask */
1684 0xffff, /* dst_mask */
1685 TRUE), /* pcrel_offset */
1686
1687 /* A 16 bit relative relocation without overflow. */
1688 HOWTO (R_PPC_REL16_LO, /* type */
1689 0, /* rightshift */
1690 1, /* size (0 = byte, 1 = short, 2 = long) */
1691 16, /* bitsize */
1692 TRUE, /* pc_relative */
1693 0, /* bitpos */
1694 complain_overflow_dont,/* complain_on_overflow */
1695 bfd_elf_generic_reloc, /* special_function */
1696 "R_PPC_REL16_LO", /* name */
1697 FALSE, /* partial_inplace */
1698 0, /* src_mask */
1699 0xffff, /* dst_mask */
1700 TRUE), /* pcrel_offset */
1701
1702 /* The high order 16 bits of a relative address. */
1703 HOWTO (R_PPC_REL16_HI, /* type */
1704 16, /* rightshift */
1705 1, /* size (0 = byte, 1 = short, 2 = long) */
1706 16, /* bitsize */
1707 TRUE, /* pc_relative */
1708 0, /* bitpos */
1709 complain_overflow_dont, /* complain_on_overflow */
1710 bfd_elf_generic_reloc, /* special_function */
1711 "R_PPC_REL16_HI", /* name */
1712 FALSE, /* partial_inplace */
1713 0, /* src_mask */
1714 0xffff, /* dst_mask */
1715 TRUE), /* pcrel_offset */
1716
1717 /* The high order 16 bits of a relative address, plus 1 if the contents of
1718 the low 16 bits, treated as a signed number, is negative. */
1719 HOWTO (R_PPC_REL16_HA, /* type */
1720 16, /* rightshift */
1721 1, /* size (0 = byte, 1 = short, 2 = long) */
1722 16, /* bitsize */
1723 TRUE, /* pc_relative */
1724 0, /* bitpos */
1725 complain_overflow_dont, /* complain_on_overflow */
1726 ppc_elf_addr16_ha_reloc, /* special_function */
1727 "R_PPC_REL16_HA", /* name */
1728 FALSE, /* partial_inplace */
1729 0, /* src_mask */
1730 0xffff, /* dst_mask */
1731 TRUE), /* pcrel_offset */
1732
1733 /* Like R_PPC_REL16_HA but for split field in addpcis. */
1734 HOWTO (R_PPC_REL16DX_HA, /* type */
1735 16, /* rightshift */
1736 2, /* size (0 = byte, 1 = short, 2 = long) */
1737 16, /* bitsize */
1738 TRUE, /* pc_relative */
1739 0, /* bitpos */
1740 complain_overflow_signed, /* complain_on_overflow */
1741 ppc_elf_addr16_ha_reloc, /* special_function */
1742 "R_PPC_REL16DX_HA", /* name */
1743 FALSE, /* partial_inplace */
1744 0, /* src_mask */
1745 0x1fffc1, /* dst_mask */
1746 TRUE), /* pcrel_offset */
1747
1748 /* GNU extension to record C++ vtable hierarchy. */
1749 HOWTO (R_PPC_GNU_VTINHERIT, /* type */
1750 0, /* rightshift */
1751 0, /* size (0 = byte, 1 = short, 2 = long) */
1752 0, /* bitsize */
1753 FALSE, /* pc_relative */
1754 0, /* bitpos */
1755 complain_overflow_dont, /* complain_on_overflow */
1756 NULL, /* special_function */
1757 "R_PPC_GNU_VTINHERIT", /* name */
1758 FALSE, /* partial_inplace */
1759 0, /* src_mask */
1760 0, /* dst_mask */
1761 FALSE), /* pcrel_offset */
1762
1763 /* GNU extension to record C++ vtable member usage. */
1764 HOWTO (R_PPC_GNU_VTENTRY, /* type */
1765 0, /* rightshift */
1766 0, /* size (0 = byte, 1 = short, 2 = long) */
1767 0, /* bitsize */
1768 FALSE, /* pc_relative */
1769 0, /* bitpos */
1770 complain_overflow_dont, /* complain_on_overflow */
1771 NULL, /* special_function */
1772 "R_PPC_GNU_VTENTRY", /* name */
1773 FALSE, /* partial_inplace */
1774 0, /* src_mask */
1775 0, /* dst_mask */
1776 FALSE), /* pcrel_offset */
1777
1778 /* Phony reloc to handle AIX style TOC entries. */
1779 HOWTO (R_PPC_TOC16, /* type */
1780 0, /* rightshift */
1781 1, /* size (0 = byte, 1 = short, 2 = long) */
1782 16, /* bitsize */
1783 FALSE, /* pc_relative */
1784 0, /* bitpos */
1785 complain_overflow_signed, /* complain_on_overflow */
1786 bfd_elf_generic_reloc, /* special_function */
1787 "R_PPC_TOC16", /* name */
1788 FALSE, /* partial_inplace */
1789 0, /* src_mask */
1790 0xffff, /* dst_mask */
1791 FALSE), /* pcrel_offset */
1792 };
1793
1794 /* External 32-bit PPC structure for PRPSINFO. This structure is
1795 ABI-defined, thus we choose to use char arrays here in order to
1796 avoid dealing with different types in different architectures.
1797
1798 The PPC 32-bit structure uses int for `pr_uid' and `pr_gid' while
1799 most non-PPC architectures use `short int'.
1800
1801 This structure will ultimately be written in the corefile's note
1802 section, as the PRPSINFO. */
1803
1804 struct elf_external_ppc_linux_prpsinfo32
1805 {
1806 char pr_state; /* Numeric process state. */
1807 char pr_sname; /* Char for pr_state. */
1808 char pr_zomb; /* Zombie. */
1809 char pr_nice; /* Nice val. */
1810 char pr_flag[4]; /* Flags. */
1811 char pr_uid[4];
1812 char pr_gid[4];
1813 char pr_pid[4];
1814 char pr_ppid[4];
1815 char pr_pgrp[4];
1816 char pr_sid[4];
1817 char pr_fname[16]; /* Filename of executable. */
1818 char pr_psargs[80]; /* Initial part of arg list. */
1819 };
1820
1821 /* Helper function to copy an elf_internal_linux_prpsinfo in host
1822 endian to an elf_external_ppc_linux_prpsinfo32 in target endian. */
1823
1824 static inline void
1825 swap_ppc_linux_prpsinfo32_out (bfd *obfd,
1826 const struct elf_internal_linux_prpsinfo *from,
1827 struct elf_external_ppc_linux_prpsinfo32 *to)
1828 {
1829 bfd_put_8 (obfd, from->pr_state, &to->pr_state);
1830 bfd_put_8 (obfd, from->pr_sname, &to->pr_sname);
1831 bfd_put_8 (obfd, from->pr_zomb, &to->pr_zomb);
1832 bfd_put_8 (obfd, from->pr_nice, &to->pr_nice);
1833 bfd_put_32 (obfd, from->pr_flag, to->pr_flag);
1834 bfd_put_32 (obfd, from->pr_uid, to->pr_uid);
1835 bfd_put_32 (obfd, from->pr_gid, to->pr_gid);
1836 bfd_put_32 (obfd, from->pr_pid, to->pr_pid);
1837 bfd_put_32 (obfd, from->pr_ppid, to->pr_ppid);
1838 bfd_put_32 (obfd, from->pr_pgrp, to->pr_pgrp);
1839 bfd_put_32 (obfd, from->pr_sid, to->pr_sid);
1840 strncpy (to->pr_fname, from->pr_fname, sizeof (to->pr_fname));
1841 strncpy (to->pr_psargs, from->pr_psargs, sizeof (to->pr_psargs));
1842 }
1843 \f
1844 /* Initialize the ppc_elf_howto_table, so that linear accesses can be done. */
1845
1846 static void
1847 ppc_elf_howto_init (void)
1848 {
1849 unsigned int i, type;
1850
1851 for (i = 0;
1852 i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]);
1853 i++)
1854 {
1855 type = ppc_elf_howto_raw[i].type;
1856 if (type >= (sizeof (ppc_elf_howto_table)
1857 / sizeof (ppc_elf_howto_table[0])))
1858 abort ();
1859 ppc_elf_howto_table[type] = &ppc_elf_howto_raw[i];
1860 }
1861 }
1862
1863 static reloc_howto_type *
1864 ppc_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1865 bfd_reloc_code_real_type code)
1866 {
1867 enum elf_ppc_reloc_type r;
1868
1869 /* Initialize howto table if not already done. */
1870 if (!ppc_elf_howto_table[R_PPC_ADDR32])
1871 ppc_elf_howto_init ();
1872
1873 switch (code)
1874 {
1875 default:
1876 return NULL;
1877
1878 case BFD_RELOC_NONE: r = R_PPC_NONE; break;
1879 case BFD_RELOC_32: r = R_PPC_ADDR32; break;
1880 case BFD_RELOC_PPC_BA26: r = R_PPC_ADDR24; break;
1881 case BFD_RELOC_PPC64_ADDR16_DS:
1882 case BFD_RELOC_16: r = R_PPC_ADDR16; break;
1883 case BFD_RELOC_PPC64_ADDR16_LO_DS:
1884 case BFD_RELOC_LO16: r = R_PPC_ADDR16_LO; break;
1885 case BFD_RELOC_HI16: r = R_PPC_ADDR16_HI; break;
1886 case BFD_RELOC_HI16_S: r = R_PPC_ADDR16_HA; break;
1887 case BFD_RELOC_PPC_BA16: r = R_PPC_ADDR14; break;
1888 case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC_ADDR14_BRTAKEN; break;
1889 case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC_ADDR14_BRNTAKEN; break;
1890 case BFD_RELOC_PPC_B26: r = R_PPC_REL24; break;
1891 case BFD_RELOC_PPC_B16: r = R_PPC_REL14; break;
1892 case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC_REL14_BRTAKEN; break;
1893 case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC_REL14_BRNTAKEN; break;
1894 case BFD_RELOC_PPC64_GOT16_DS:
1895 case BFD_RELOC_16_GOTOFF: r = R_PPC_GOT16; break;
1896 case BFD_RELOC_PPC64_GOT16_LO_DS:
1897 case BFD_RELOC_LO16_GOTOFF: r = R_PPC_GOT16_LO; break;
1898 case BFD_RELOC_HI16_GOTOFF: r = R_PPC_GOT16_HI; break;
1899 case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC_GOT16_HA; break;
1900 case BFD_RELOC_24_PLT_PCREL: r = R_PPC_PLTREL24; break;
1901 case BFD_RELOC_PPC_COPY: r = R_PPC_COPY; break;
1902 case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC_GLOB_DAT; break;
1903 case BFD_RELOC_PPC_LOCAL24PC: r = R_PPC_LOCAL24PC; break;
1904 case BFD_RELOC_32_PCREL: r = R_PPC_REL32; break;
1905 case BFD_RELOC_32_PLTOFF: r = R_PPC_PLT32; break;
1906 case BFD_RELOC_32_PLT_PCREL: r = R_PPC_PLTREL32; break;
1907 case BFD_RELOC_PPC64_PLT16_LO_DS:
1908 case BFD_RELOC_LO16_PLTOFF: r = R_PPC_PLT16_LO; break;
1909 case BFD_RELOC_HI16_PLTOFF: r = R_PPC_PLT16_HI; break;
1910 case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC_PLT16_HA; break;
1911 case BFD_RELOC_GPREL16: r = R_PPC_SDAREL16; break;
1912 case BFD_RELOC_PPC64_SECTOFF_DS:
1913 case BFD_RELOC_16_BASEREL: r = R_PPC_SECTOFF; break;
1914 case BFD_RELOC_PPC64_SECTOFF_LO_DS:
1915 case BFD_RELOC_LO16_BASEREL: r = R_PPC_SECTOFF_LO; break;
1916 case BFD_RELOC_HI16_BASEREL: r = R_PPC_SECTOFF_HI; break;
1917 case BFD_RELOC_HI16_S_BASEREL: r = R_PPC_SECTOFF_HA; break;
1918 case BFD_RELOC_CTOR: r = R_PPC_ADDR32; break;
1919 case BFD_RELOC_PPC64_TOC16_DS:
1920 case BFD_RELOC_PPC_TOC16: r = R_PPC_TOC16; break;
1921 case BFD_RELOC_PPC_TLS: r = R_PPC_TLS; break;
1922 case BFD_RELOC_PPC_TLSGD: r = R_PPC_TLSGD; break;
1923 case BFD_RELOC_PPC_TLSLD: r = R_PPC_TLSLD; break;
1924 case BFD_RELOC_PPC_DTPMOD: r = R_PPC_DTPMOD32; break;
1925 case BFD_RELOC_PPC64_TPREL16_DS:
1926 case BFD_RELOC_PPC_TPREL16: r = R_PPC_TPREL16; break;
1927 case BFD_RELOC_PPC64_TPREL16_LO_DS:
1928 case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC_TPREL16_LO; break;
1929 case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC_TPREL16_HI; break;
1930 case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC_TPREL16_HA; break;
1931 case BFD_RELOC_PPC_TPREL: r = R_PPC_TPREL32; break;
1932 case BFD_RELOC_PPC64_DTPREL16_DS:
1933 case BFD_RELOC_PPC_DTPREL16: r = R_PPC_DTPREL16; break;
1934 case BFD_RELOC_PPC64_DTPREL16_LO_DS:
1935 case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC_DTPREL16_LO; break;
1936 case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC_DTPREL16_HI; break;
1937 case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC_DTPREL16_HA; break;
1938 case BFD_RELOC_PPC_DTPREL: r = R_PPC_DTPREL32; break;
1939 case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC_GOT_TLSGD16; break;
1940 case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC_GOT_TLSGD16_LO; break;
1941 case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC_GOT_TLSGD16_HI; break;
1942 case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC_GOT_TLSGD16_HA; break;
1943 case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC_GOT_TLSLD16; break;
1944 case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC_GOT_TLSLD16_LO; break;
1945 case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC_GOT_TLSLD16_HI; break;
1946 case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC_GOT_TLSLD16_HA; break;
1947 case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC_GOT_TPREL16; break;
1948 case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC_GOT_TPREL16_LO; break;
1949 case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC_GOT_TPREL16_HI; break;
1950 case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC_GOT_TPREL16_HA; break;
1951 case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC_GOT_DTPREL16; break;
1952 case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC_GOT_DTPREL16_LO; break;
1953 case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC_GOT_DTPREL16_HI; break;
1954 case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC_GOT_DTPREL16_HA; break;
1955 case BFD_RELOC_PPC_EMB_NADDR32: r = R_PPC_EMB_NADDR32; break;
1956 case BFD_RELOC_PPC_EMB_NADDR16: r = R_PPC_EMB_NADDR16; break;
1957 case BFD_RELOC_PPC_EMB_NADDR16_LO: r = R_PPC_EMB_NADDR16_LO; break;
1958 case BFD_RELOC_PPC_EMB_NADDR16_HI: r = R_PPC_EMB_NADDR16_HI; break;
1959 case BFD_RELOC_PPC_EMB_NADDR16_HA: r = R_PPC_EMB_NADDR16_HA; break;
1960 case BFD_RELOC_PPC_EMB_SDAI16: r = R_PPC_EMB_SDAI16; break;
1961 case BFD_RELOC_PPC_EMB_SDA2I16: r = R_PPC_EMB_SDA2I16; break;
1962 case BFD_RELOC_PPC_EMB_SDA2REL: r = R_PPC_EMB_SDA2REL; break;
1963 case BFD_RELOC_PPC_EMB_SDA21: r = R_PPC_EMB_SDA21; break;
1964 case BFD_RELOC_PPC_EMB_MRKREF: r = R_PPC_EMB_MRKREF; break;
1965 case BFD_RELOC_PPC_EMB_RELSEC16: r = R_PPC_EMB_RELSEC16; break;
1966 case BFD_RELOC_PPC_EMB_RELST_LO: r = R_PPC_EMB_RELST_LO; break;
1967 case BFD_RELOC_PPC_EMB_RELST_HI: r = R_PPC_EMB_RELST_HI; break;
1968 case BFD_RELOC_PPC_EMB_RELST_HA: r = R_PPC_EMB_RELST_HA; break;
1969 case BFD_RELOC_PPC_EMB_BIT_FLD: r = R_PPC_EMB_BIT_FLD; break;
1970 case BFD_RELOC_PPC_EMB_RELSDA: r = R_PPC_EMB_RELSDA; break;
1971 case BFD_RELOC_PPC_VLE_REL8: r = R_PPC_VLE_REL8; break;
1972 case BFD_RELOC_PPC_VLE_REL15: r = R_PPC_VLE_REL15; break;
1973 case BFD_RELOC_PPC_VLE_REL24: r = R_PPC_VLE_REL24; break;
1974 case BFD_RELOC_PPC_VLE_LO16A: r = R_PPC_VLE_LO16A; break;
1975 case BFD_RELOC_PPC_VLE_LO16D: r = R_PPC_VLE_LO16D; break;
1976 case BFD_RELOC_PPC_VLE_HI16A: r = R_PPC_VLE_HI16A; break;
1977 case BFD_RELOC_PPC_VLE_HI16D: r = R_PPC_VLE_HI16D; break;
1978 case BFD_RELOC_PPC_VLE_HA16A: r = R_PPC_VLE_HA16A; break;
1979 case BFD_RELOC_PPC_VLE_HA16D: r = R_PPC_VLE_HA16D; break;
1980 case BFD_RELOC_PPC_VLE_SDA21: r = R_PPC_VLE_SDA21; break;
1981 case BFD_RELOC_PPC_VLE_SDA21_LO: r = R_PPC_VLE_SDA21_LO; break;
1982 case BFD_RELOC_PPC_VLE_SDAREL_LO16A:
1983 r = R_PPC_VLE_SDAREL_LO16A;
1984 break;
1985 case BFD_RELOC_PPC_VLE_SDAREL_LO16D:
1986 r = R_PPC_VLE_SDAREL_LO16D;
1987 break;
1988 case BFD_RELOC_PPC_VLE_SDAREL_HI16A:
1989 r = R_PPC_VLE_SDAREL_HI16A;
1990 break;
1991 case BFD_RELOC_PPC_VLE_SDAREL_HI16D:
1992 r = R_PPC_VLE_SDAREL_HI16D;
1993 break;
1994 case BFD_RELOC_PPC_VLE_SDAREL_HA16A:
1995 r = R_PPC_VLE_SDAREL_HA16A;
1996 break;
1997 case BFD_RELOC_PPC_VLE_SDAREL_HA16D:
1998 r = R_PPC_VLE_SDAREL_HA16D;
1999 break;
2000 case BFD_RELOC_16_PCREL: r = R_PPC_REL16; break;
2001 case BFD_RELOC_LO16_PCREL: r = R_PPC_REL16_LO; break;
2002 case BFD_RELOC_HI16_PCREL: r = R_PPC_REL16_HI; break;
2003 case BFD_RELOC_HI16_S_PCREL: r = R_PPC_REL16_HA; break;
2004 case BFD_RELOC_PPC_REL16DX_HA: r = R_PPC_REL16DX_HA; break;
2005 case BFD_RELOC_VTABLE_INHERIT: r = R_PPC_GNU_VTINHERIT; break;
2006 case BFD_RELOC_VTABLE_ENTRY: r = R_PPC_GNU_VTENTRY; break;
2007 }
2008
2009 return ppc_elf_howto_table[r];
2010 };
2011
2012 static reloc_howto_type *
2013 ppc_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
2014 const char *r_name)
2015 {
2016 unsigned int i;
2017
2018 for (i = 0;
2019 i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]);
2020 i++)
2021 if (ppc_elf_howto_raw[i].name != NULL
2022 && strcasecmp (ppc_elf_howto_raw[i].name, r_name) == 0)
2023 return &ppc_elf_howto_raw[i];
2024
2025 return NULL;
2026 }
2027
2028 /* Set the howto pointer for a PowerPC ELF reloc. */
2029
2030 static void
2031 ppc_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED,
2032 arelent *cache_ptr,
2033 Elf_Internal_Rela *dst)
2034 {
2035 unsigned int r_type;
2036
2037 /* Initialize howto table if not already done. */
2038 if (!ppc_elf_howto_table[R_PPC_ADDR32])
2039 ppc_elf_howto_init ();
2040
2041 r_type = ELF32_R_TYPE (dst->r_info);
2042 if (r_type >= R_PPC_max)
2043 {
2044 (*_bfd_error_handler) (_("%B: unrecognised PPC reloc number: %d"),
2045 abfd, r_type);
2046 bfd_set_error (bfd_error_bad_value);
2047 r_type = R_PPC_NONE;
2048 }
2049 cache_ptr->howto = ppc_elf_howto_table[r_type];
2050
2051 /* Just because the above assert didn't trigger doesn't mean that
2052 ELF32_R_TYPE (dst->r_info) is necessarily a valid relocation. */
2053 if (!cache_ptr->howto)
2054 {
2055 (*_bfd_error_handler) (_("%B: invalid relocation type %d"),
2056 abfd, r_type);
2057 bfd_set_error (bfd_error_bad_value);
2058
2059 cache_ptr->howto = ppc_elf_howto_table[R_PPC_NONE];
2060 }
2061 }
2062
2063 /* Handle the R_PPC_ADDR16_HA and R_PPC_REL16_HA relocs. */
2064
2065 static bfd_reloc_status_type
2066 ppc_elf_addr16_ha_reloc (bfd *abfd ATTRIBUTE_UNUSED,
2067 arelent *reloc_entry,
2068 asymbol *symbol,
2069 void *data ATTRIBUTE_UNUSED,
2070 asection *input_section,
2071 bfd *output_bfd,
2072 char **error_message ATTRIBUTE_UNUSED)
2073 {
2074 enum elf_ppc_reloc_type r_type;
2075 long insn;
2076 bfd_size_type octets;
2077 bfd_vma value;
2078
2079 if (output_bfd != NULL)
2080 {
2081 reloc_entry->address += input_section->output_offset;
2082 return bfd_reloc_ok;
2083 }
2084
2085 reloc_entry->addend += 0x8000;
2086 r_type = reloc_entry->howto->type;
2087 if (r_type != R_PPC_REL16DX_HA)
2088 return bfd_reloc_continue;
2089
2090 value = 0;
2091 if (!bfd_is_com_section (symbol->section))
2092 value = symbol->value;
2093 value += (reloc_entry->addend
2094 + symbol->section->output_offset
2095 + symbol->section->output_section->vma);
2096 value -= (reloc_entry->address
2097 + input_section->output_offset
2098 + input_section->output_section->vma);
2099 value >>= 16;
2100
2101 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
2102 insn = bfd_get_32 (abfd, (bfd_byte *) data + octets);
2103 insn &= ~0x1fffc1;
2104 insn |= (value & 0xffc1) | ((value & 0x3e) << 15);
2105 bfd_put_32 (abfd, insn, (bfd_byte *) data + octets);
2106 return bfd_reloc_ok;
2107 }
2108
2109 static bfd_reloc_status_type
2110 ppc_elf_unhandled_reloc (bfd *abfd,
2111 arelent *reloc_entry,
2112 asymbol *symbol,
2113 void *data,
2114 asection *input_section,
2115 bfd *output_bfd,
2116 char **error_message)
2117 {
2118 /* If this is a relocatable link (output_bfd test tells us), just
2119 call the generic function. Any adjustment will be done at final
2120 link time. */
2121 if (output_bfd != NULL)
2122 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2123 input_section, output_bfd, error_message);
2124
2125 if (error_message != NULL)
2126 {
2127 static char buf[60];
2128 sprintf (buf, _("generic linker can't handle %s"),
2129 reloc_entry->howto->name);
2130 *error_message = buf;
2131 }
2132 return bfd_reloc_dangerous;
2133 }
2134 \f
2135 /* Sections created by the linker. */
2136
2137 typedef struct elf_linker_section
2138 {
2139 /* Pointer to the bfd section. */
2140 asection *section;
2141 /* Section name. */
2142 const char *name;
2143 /* Associated bss section name. */
2144 const char *bss_name;
2145 /* Associated symbol name. */
2146 const char *sym_name;
2147 /* Associated symbol. */
2148 struct elf_link_hash_entry *sym;
2149 } elf_linker_section_t;
2150
2151 /* Linked list of allocated pointer entries. This hangs off of the
2152 symbol lists, and provides allows us to return different pointers,
2153 based on different addend's. */
2154
2155 typedef struct elf_linker_section_pointers
2156 {
2157 /* next allocated pointer for this symbol */
2158 struct elf_linker_section_pointers *next;
2159 /* offset of pointer from beginning of section */
2160 bfd_vma offset;
2161 /* addend used */
2162 bfd_vma addend;
2163 /* which linker section this is */
2164 elf_linker_section_t *lsect;
2165 } elf_linker_section_pointers_t;
2166
2167 struct ppc_elf_obj_tdata
2168 {
2169 struct elf_obj_tdata elf;
2170
2171 /* A mapping from local symbols to offsets into the various linker
2172 sections added. This is index by the symbol index. */
2173 elf_linker_section_pointers_t **linker_section_pointers;
2174
2175 /* Flags used to auto-detect plt type. */
2176 unsigned int makes_plt_call : 1;
2177 unsigned int has_rel16 : 1;
2178 };
2179
2180 #define ppc_elf_tdata(bfd) \
2181 ((struct ppc_elf_obj_tdata *) (bfd)->tdata.any)
2182
2183 #define elf_local_ptr_offsets(bfd) \
2184 (ppc_elf_tdata (bfd)->linker_section_pointers)
2185
2186 #define is_ppc_elf(bfd) \
2187 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
2188 && elf_object_id (bfd) == PPC32_ELF_DATA)
2189
2190 /* Override the generic function because we store some extras. */
2191
2192 static bfd_boolean
2193 ppc_elf_mkobject (bfd *abfd)
2194 {
2195 return bfd_elf_allocate_object (abfd, sizeof (struct ppc_elf_obj_tdata),
2196 PPC32_ELF_DATA);
2197 }
2198
2199 /* When defaulting arch/mach, decode apuinfo to find a better match. */
2200
2201 bfd_boolean
2202 _bfd_elf_ppc_set_arch (bfd *abfd)
2203 {
2204 unsigned long mach = 0;
2205 asection *s;
2206 unsigned char *contents;
2207
2208 if (abfd->arch_info->bits_per_word == 32
2209 && bfd_big_endian (abfd))
2210 {
2211
2212 for (s = abfd->sections; s != NULL; s = s->next)
2213 if ((elf_section_data (s)->this_hdr.sh_flags & SHF_PPC_VLE) != 0)
2214 break;
2215 if (s != NULL)
2216 mach = bfd_mach_ppc_vle;
2217 }
2218
2219 if (mach == 0)
2220 {
2221 s = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2222 if (s != NULL && bfd_malloc_and_get_section (abfd, s, &contents))
2223 {
2224 unsigned int apuinfo_size = bfd_get_32 (abfd, contents + 4);
2225 unsigned int i;
2226
2227 for (i = 20; i < apuinfo_size + 20 && i + 4 <= s->size; i += 4)
2228 {
2229 unsigned int val = bfd_get_32 (abfd, contents + i);
2230 switch (val >> 16)
2231 {
2232 case PPC_APUINFO_PMR:
2233 case PPC_APUINFO_RFMCI:
2234 if (mach == 0)
2235 mach = bfd_mach_ppc_titan;
2236 break;
2237
2238 case PPC_APUINFO_ISEL:
2239 case PPC_APUINFO_CACHELCK:
2240 if (mach == bfd_mach_ppc_titan)
2241 mach = bfd_mach_ppc_e500mc;
2242 break;
2243
2244 case PPC_APUINFO_SPE:
2245 case PPC_APUINFO_EFS:
2246 case PPC_APUINFO_BRLOCK:
2247 if (mach != bfd_mach_ppc_vle)
2248 mach = bfd_mach_ppc_e500;
2249
2250 case PPC_APUINFO_VLE:
2251 mach = bfd_mach_ppc_vle;
2252 break;
2253
2254 default:
2255 mach = -1ul;
2256 }
2257 }
2258 free (contents);
2259 }
2260 }
2261
2262 if (mach != 0 && mach != -1ul)
2263 {
2264 const bfd_arch_info_type *arch;
2265
2266 for (arch = abfd->arch_info->next; arch; arch = arch->next)
2267 if (arch->mach == mach)
2268 {
2269 abfd->arch_info = arch;
2270 break;
2271 }
2272 }
2273 return TRUE;
2274 }
2275
2276 /* Fix bad default arch selected for a 32 bit input bfd when the
2277 default is 64 bit. Also select arch based on apuinfo. */
2278
2279 static bfd_boolean
2280 ppc_elf_object_p (bfd *abfd)
2281 {
2282 if (!abfd->arch_info->the_default)
2283 return TRUE;
2284
2285 if (abfd->arch_info->bits_per_word == 64)
2286 {
2287 Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd);
2288
2289 if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS32)
2290 {
2291 /* Relies on arch after 64 bit default being 32 bit default. */
2292 abfd->arch_info = abfd->arch_info->next;
2293 BFD_ASSERT (abfd->arch_info->bits_per_word == 32);
2294 }
2295 }
2296 return _bfd_elf_ppc_set_arch (abfd);
2297 }
2298
2299 /* Function to set whether a module needs the -mrelocatable bit set. */
2300
2301 static bfd_boolean
2302 ppc_elf_set_private_flags (bfd *abfd, flagword flags)
2303 {
2304 BFD_ASSERT (!elf_flags_init (abfd)
2305 || elf_elfheader (abfd)->e_flags == flags);
2306
2307 elf_elfheader (abfd)->e_flags = flags;
2308 elf_flags_init (abfd) = TRUE;
2309 return TRUE;
2310 }
2311
2312 /* Support for core dump NOTE sections. */
2313
2314 static bfd_boolean
2315 ppc_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
2316 {
2317 int offset;
2318 unsigned int size;
2319
2320 switch (note->descsz)
2321 {
2322 default:
2323 return FALSE;
2324
2325 case 268: /* Linux/PPC. */
2326 /* pr_cursig */
2327 elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12);
2328
2329 /* pr_pid */
2330 elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 24);
2331
2332 /* pr_reg */
2333 offset = 72;
2334 size = 192;
2335
2336 break;
2337 }
2338
2339 /* Make a ".reg/999" section. */
2340 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
2341 size, note->descpos + offset);
2342 }
2343
2344 static bfd_boolean
2345 ppc_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
2346 {
2347 switch (note->descsz)
2348 {
2349 default:
2350 return FALSE;
2351
2352 case 128: /* Linux/PPC elf_prpsinfo. */
2353 elf_tdata (abfd)->core->pid
2354 = bfd_get_32 (abfd, note->descdata + 16);
2355 elf_tdata (abfd)->core->program
2356 = _bfd_elfcore_strndup (abfd, note->descdata + 32, 16);
2357 elf_tdata (abfd)->core->command
2358 = _bfd_elfcore_strndup (abfd, note->descdata + 48, 80);
2359 }
2360
2361 /* Note that for some reason, a spurious space is tacked
2362 onto the end of the args in some (at least one anyway)
2363 implementations, so strip it off if it exists. */
2364
2365 {
2366 char *command = elf_tdata (abfd)->core->command;
2367 int n = strlen (command);
2368
2369 if (0 < n && command[n - 1] == ' ')
2370 command[n - 1] = '\0';
2371 }
2372
2373 return TRUE;
2374 }
2375
2376 char *
2377 elfcore_write_ppc_linux_prpsinfo32
2378 (bfd *abfd,
2379 char *buf,
2380 int *bufsiz,
2381 const struct elf_internal_linux_prpsinfo *prpsinfo)
2382 {
2383 struct elf_external_ppc_linux_prpsinfo32 data;
2384
2385 swap_ppc_linux_prpsinfo32_out (abfd, prpsinfo, &data);
2386 return elfcore_write_note (abfd, buf, bufsiz,
2387 "CORE", NT_PRPSINFO, &data, sizeof (data));
2388 }
2389
2390 static char *
2391 ppc_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type, ...)
2392 {
2393 switch (note_type)
2394 {
2395 default:
2396 return NULL;
2397
2398 case NT_PRPSINFO:
2399 {
2400 char data[128];
2401 va_list ap;
2402
2403 va_start (ap, note_type);
2404 memset (data, 0, sizeof (data));
2405 strncpy (data + 32, va_arg (ap, const char *), 16);
2406 strncpy (data + 48, va_arg (ap, const char *), 80);
2407 va_end (ap);
2408 return elfcore_write_note (abfd, buf, bufsiz,
2409 "CORE", note_type, data, sizeof (data));
2410 }
2411
2412 case NT_PRSTATUS:
2413 {
2414 char data[268];
2415 va_list ap;
2416 long pid;
2417 int cursig;
2418 const void *greg;
2419
2420 va_start (ap, note_type);
2421 memset (data, 0, 72);
2422 pid = va_arg (ap, long);
2423 bfd_put_32 (abfd, pid, data + 24);
2424 cursig = va_arg (ap, int);
2425 bfd_put_16 (abfd, cursig, data + 12);
2426 greg = va_arg (ap, const void *);
2427 memcpy (data + 72, greg, 192);
2428 memset (data + 264, 0, 4);
2429 va_end (ap);
2430 return elfcore_write_note (abfd, buf, bufsiz,
2431 "CORE", note_type, data, sizeof (data));
2432 }
2433 }
2434 }
2435
2436 static flagword
2437 ppc_elf_lookup_section_flags (char *flag_name)
2438 {
2439
2440 if (!strcmp (flag_name, "SHF_PPC_VLE"))
2441 return SHF_PPC_VLE;
2442
2443 return 0;
2444 }
2445
2446 /* Add the VLE flag if required. */
2447
2448 bfd_boolean
2449 ppc_elf_section_processing (bfd *abfd, Elf_Internal_Shdr *shdr)
2450 {
2451 if (bfd_get_mach (abfd) == bfd_mach_ppc_vle
2452 && (shdr->sh_flags & SHF_EXECINSTR) != 0)
2453 shdr->sh_flags |= SHF_PPC_VLE;
2454
2455 return TRUE;
2456 }
2457
2458 /* Return address for Ith PLT stub in section PLT, for relocation REL
2459 or (bfd_vma) -1 if it should not be included. */
2460
2461 static bfd_vma
2462 ppc_elf_plt_sym_val (bfd_vma i ATTRIBUTE_UNUSED,
2463 const asection *plt ATTRIBUTE_UNUSED,
2464 const arelent *rel)
2465 {
2466 return rel->address;
2467 }
2468
2469 /* Handle a PowerPC specific section when reading an object file. This
2470 is called when bfd_section_from_shdr finds a section with an unknown
2471 type. */
2472
2473 static bfd_boolean
2474 ppc_elf_section_from_shdr (bfd *abfd,
2475 Elf_Internal_Shdr *hdr,
2476 const char *name,
2477 int shindex)
2478 {
2479 asection *newsect;
2480 flagword flags;
2481
2482 if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
2483 return FALSE;
2484
2485 newsect = hdr->bfd_section;
2486 flags = bfd_get_section_flags (abfd, newsect);
2487 if (hdr->sh_flags & SHF_EXCLUDE)
2488 flags |= SEC_EXCLUDE;
2489
2490 if (hdr->sh_type == SHT_ORDERED)
2491 flags |= SEC_SORT_ENTRIES;
2492
2493 bfd_set_section_flags (abfd, newsect, flags);
2494 return TRUE;
2495 }
2496
2497 /* Set up any other section flags and such that may be necessary. */
2498
2499 static bfd_boolean
2500 ppc_elf_fake_sections (bfd *abfd ATTRIBUTE_UNUSED,
2501 Elf_Internal_Shdr *shdr,
2502 asection *asect)
2503 {
2504 if ((asect->flags & SEC_SORT_ENTRIES) != 0)
2505 shdr->sh_type = SHT_ORDERED;
2506
2507 return TRUE;
2508 }
2509
2510 /* If we have .sbss2 or .PPC.EMB.sbss0 output sections, we
2511 need to bump up the number of section headers. */
2512
2513 static int
2514 ppc_elf_additional_program_headers (bfd *abfd,
2515 struct bfd_link_info *info ATTRIBUTE_UNUSED)
2516 {
2517 asection *s;
2518 int ret = 0;
2519
2520 s = bfd_get_section_by_name (abfd, ".sbss2");
2521 if (s != NULL && (s->flags & SEC_ALLOC) != 0)
2522 ++ret;
2523
2524 s = bfd_get_section_by_name (abfd, ".PPC.EMB.sbss0");
2525 if (s != NULL && (s->flags & SEC_ALLOC) != 0)
2526 ++ret;
2527
2528 return ret;
2529 }
2530
2531 /* Modify the segment map for VLE executables. */
2532
2533 bfd_boolean
2534 ppc_elf_modify_segment_map (bfd *abfd,
2535 struct bfd_link_info *info ATTRIBUTE_UNUSED)
2536 {
2537 struct elf_segment_map *m, *n;
2538 bfd_size_type amt;
2539 unsigned int j, k;
2540 bfd_boolean sect0_vle, sectj_vle;
2541
2542 /* At this point in the link, output sections have already been sorted by
2543 LMA and assigned to segments. All that is left to do is to ensure
2544 there is no mixing of VLE & non-VLE sections in a text segment.
2545 If we find that case, we split the segment.
2546 We maintain the original output section order. */
2547
2548 for (m = elf_seg_map (abfd); m != NULL; m = m->next)
2549 {
2550 if (m->count == 0)
2551 continue;
2552
2553 sect0_vle = (elf_section_flags (m->sections[0]) & SHF_PPC_VLE) != 0;
2554 for (j = 1; j < m->count; ++j)
2555 {
2556 sectj_vle = (elf_section_flags (m->sections[j]) & SHF_PPC_VLE) != 0;
2557
2558 if (sectj_vle != sect0_vle)
2559 break;
2560 }
2561 if (j >= m->count)
2562 continue;
2563
2564 /* sections 0..j-1 stay in this (current) segment,
2565 the remainder are put in a new segment.
2566 The scan resumes with the new segment. */
2567
2568 /* Fix the new segment. */
2569 amt = sizeof (struct elf_segment_map);
2570 amt += (m->count - j - 1) * sizeof (asection *);
2571 n = (struct elf_segment_map *) bfd_zalloc (abfd, amt);
2572 if (n == NULL)
2573 return FALSE;
2574
2575 n->p_type = PT_LOAD;
2576 n->p_flags = PF_X | PF_R;
2577 if (sectj_vle)
2578 n->p_flags |= PF_PPC_VLE;
2579 n->count = m->count - j;
2580 for (k = 0; k < n->count; ++k)
2581 {
2582 n->sections[k] = m->sections[j+k];
2583 m->sections[j+k] = NULL;
2584 }
2585 n->next = m->next;
2586 m->next = n;
2587
2588 /* Fix the current segment */
2589 m->count = j;
2590 }
2591
2592 return TRUE;
2593 }
2594
2595 /* Add extra PPC sections -- Note, for now, make .sbss2 and
2596 .PPC.EMB.sbss0 a normal section, and not a bss section so
2597 that the linker doesn't crater when trying to make more than
2598 2 sections. */
2599
2600 static const struct bfd_elf_special_section ppc_elf_special_sections[] =
2601 {
2602 { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, SHF_ALLOC + SHF_EXECINSTR },
2603 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2604 { STRING_COMMA_LEN (".sbss2"), -2, SHT_PROGBITS, SHF_ALLOC },
2605 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2606 { STRING_COMMA_LEN (".sdata2"), -2, SHT_PROGBITS, SHF_ALLOC },
2607 { STRING_COMMA_LEN (".tags"), 0, SHT_ORDERED, SHF_ALLOC },
2608 { STRING_COMMA_LEN (APUINFO_SECTION_NAME), 0, SHT_NOTE, 0 },
2609 { STRING_COMMA_LEN (".PPC.EMB.sbss0"), 0, SHT_PROGBITS, SHF_ALLOC },
2610 { STRING_COMMA_LEN (".PPC.EMB.sdata0"), 0, SHT_PROGBITS, SHF_ALLOC },
2611 { NULL, 0, 0, 0, 0 }
2612 };
2613
2614 /* This is what we want for new plt/got. */
2615 static struct bfd_elf_special_section ppc_alt_plt =
2616 { STRING_COMMA_LEN (".plt"), 0, SHT_PROGBITS, SHF_ALLOC };
2617
2618 static const struct bfd_elf_special_section *
2619 ppc_elf_get_sec_type_attr (bfd *abfd ATTRIBUTE_UNUSED, asection *sec)
2620 {
2621 const struct bfd_elf_special_section *ssect;
2622
2623 /* See if this is one of the special sections. */
2624 if (sec->name == NULL)
2625 return NULL;
2626
2627 ssect = _bfd_elf_get_special_section (sec->name, ppc_elf_special_sections,
2628 sec->use_rela_p);
2629 if (ssect != NULL)
2630 {
2631 if (ssect == ppc_elf_special_sections && (sec->flags & SEC_LOAD) != 0)
2632 ssect = &ppc_alt_plt;
2633 return ssect;
2634 }
2635
2636 return _bfd_elf_get_sec_type_attr (abfd, sec);
2637 }
2638 \f
2639 /* Very simple linked list structure for recording apuinfo values. */
2640 typedef struct apuinfo_list
2641 {
2642 struct apuinfo_list *next;
2643 unsigned long value;
2644 }
2645 apuinfo_list;
2646
2647 static apuinfo_list *head;
2648 static bfd_boolean apuinfo_set;
2649
2650 static void
2651 apuinfo_list_init (void)
2652 {
2653 head = NULL;
2654 apuinfo_set = FALSE;
2655 }
2656
2657 static void
2658 apuinfo_list_add (unsigned long value)
2659 {
2660 apuinfo_list *entry = head;
2661
2662 while (entry != NULL)
2663 {
2664 if (entry->value == value)
2665 return;
2666 entry = entry->next;
2667 }
2668
2669 entry = bfd_malloc (sizeof (* entry));
2670 if (entry == NULL)
2671 return;
2672
2673 entry->value = value;
2674 entry->next = head;
2675 head = entry;
2676 }
2677
2678 static unsigned
2679 apuinfo_list_length (void)
2680 {
2681 apuinfo_list *entry;
2682 unsigned long count;
2683
2684 for (entry = head, count = 0;
2685 entry;
2686 entry = entry->next)
2687 ++ count;
2688
2689 return count;
2690 }
2691
2692 static inline unsigned long
2693 apuinfo_list_element (unsigned long number)
2694 {
2695 apuinfo_list * entry;
2696
2697 for (entry = head;
2698 entry && number --;
2699 entry = entry->next)
2700 ;
2701
2702 return entry ? entry->value : 0;
2703 }
2704
2705 static void
2706 apuinfo_list_finish (void)
2707 {
2708 apuinfo_list *entry;
2709
2710 for (entry = head; entry;)
2711 {
2712 apuinfo_list *next = entry->next;
2713 free (entry);
2714 entry = next;
2715 }
2716
2717 head = NULL;
2718 }
2719
2720 /* Scan the input BFDs and create a linked list of
2721 the APUinfo values that will need to be emitted. */
2722
2723 static void
2724 ppc_elf_begin_write_processing (bfd *abfd, struct bfd_link_info *link_info)
2725 {
2726 bfd *ibfd;
2727 asection *asec;
2728 char *buffer = NULL;
2729 bfd_size_type largest_input_size = 0;
2730 unsigned i;
2731 unsigned long length;
2732 const char *error_message = NULL;
2733
2734 if (link_info == NULL)
2735 return;
2736
2737 apuinfo_list_init ();
2738
2739 /* Read in the input sections contents. */
2740 for (ibfd = link_info->input_bfds; ibfd; ibfd = ibfd->link.next)
2741 {
2742 unsigned long datum;
2743
2744 asec = bfd_get_section_by_name (ibfd, APUINFO_SECTION_NAME);
2745 if (asec == NULL)
2746 continue;
2747
2748 error_message = _("corrupt %s section in %B");
2749 length = asec->size;
2750 if (length < 20)
2751 goto fail;
2752
2753 apuinfo_set = TRUE;
2754 if (largest_input_size < asec->size)
2755 {
2756 if (buffer)
2757 free (buffer);
2758 largest_input_size = asec->size;
2759 buffer = bfd_malloc (largest_input_size);
2760 if (!buffer)
2761 return;
2762 }
2763
2764 if (bfd_seek (ibfd, asec->filepos, SEEK_SET) != 0
2765 || (bfd_bread (buffer, length, ibfd) != length))
2766 {
2767 error_message = _("unable to read in %s section from %B");
2768 goto fail;
2769 }
2770
2771 /* Verify the contents of the header. Note - we have to
2772 extract the values this way in order to allow for a
2773 host whose endian-ness is different from the target. */
2774 datum = bfd_get_32 (ibfd, buffer);
2775 if (datum != sizeof APUINFO_LABEL)
2776 goto fail;
2777
2778 datum = bfd_get_32 (ibfd, buffer + 8);
2779 if (datum != 0x2)
2780 goto fail;
2781
2782 if (strcmp (buffer + 12, APUINFO_LABEL) != 0)
2783 goto fail;
2784
2785 /* Get the number of bytes used for apuinfo entries. */
2786 datum = bfd_get_32 (ibfd, buffer + 4);
2787 if (datum + 20 != length)
2788 goto fail;
2789
2790 /* Scan the apuinfo section, building a list of apuinfo numbers. */
2791 for (i = 0; i < datum; i += 4)
2792 apuinfo_list_add (bfd_get_32 (ibfd, buffer + 20 + i));
2793 }
2794
2795 error_message = NULL;
2796
2797 if (apuinfo_set)
2798 {
2799 /* Compute the size of the output section. */
2800 unsigned num_entries = apuinfo_list_length ();
2801
2802 /* Set the output section size, if it exists. */
2803 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2804
2805 if (asec && ! bfd_set_section_size (abfd, asec, 20 + num_entries * 4))
2806 {
2807 ibfd = abfd;
2808 error_message = _("warning: unable to set size of %s section in %B");
2809 }
2810 }
2811
2812 fail:
2813 if (buffer)
2814 free (buffer);
2815
2816 if (error_message)
2817 (*_bfd_error_handler) (error_message, ibfd, APUINFO_SECTION_NAME);
2818 }
2819
2820 /* Prevent the output section from accumulating the input sections'
2821 contents. We have already stored this in our linked list structure. */
2822
2823 static bfd_boolean
2824 ppc_elf_write_section (bfd *abfd ATTRIBUTE_UNUSED,
2825 struct bfd_link_info *link_info ATTRIBUTE_UNUSED,
2826 asection *asec,
2827 bfd_byte *contents ATTRIBUTE_UNUSED)
2828 {
2829 return apuinfo_set && strcmp (asec->name, APUINFO_SECTION_NAME) == 0;
2830 }
2831
2832 /* Finally we can generate the output section. */
2833
2834 static void
2835 ppc_elf_final_write_processing (bfd *abfd, bfd_boolean linker ATTRIBUTE_UNUSED)
2836 {
2837 bfd_byte *buffer;
2838 asection *asec;
2839 unsigned i;
2840 unsigned num_entries;
2841 bfd_size_type length;
2842
2843 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2844 if (asec == NULL)
2845 return;
2846
2847 if (!apuinfo_set)
2848 return;
2849
2850 length = asec->size;
2851 if (length < 20)
2852 return;
2853
2854 buffer = bfd_malloc (length);
2855 if (buffer == NULL)
2856 {
2857 (*_bfd_error_handler)
2858 (_("failed to allocate space for new APUinfo section."));
2859 return;
2860 }
2861
2862 /* Create the apuinfo header. */
2863 num_entries = apuinfo_list_length ();
2864 bfd_put_32 (abfd, sizeof APUINFO_LABEL, buffer);
2865 bfd_put_32 (abfd, num_entries * 4, buffer + 4);
2866 bfd_put_32 (abfd, 0x2, buffer + 8);
2867 strcpy ((char *) buffer + 12, APUINFO_LABEL);
2868
2869 length = 20;
2870 for (i = 0; i < num_entries; i++)
2871 {
2872 bfd_put_32 (abfd, apuinfo_list_element (i), buffer + length);
2873 length += 4;
2874 }
2875
2876 if (length != asec->size)
2877 (*_bfd_error_handler) (_("failed to compute new APUinfo section."));
2878
2879 if (! bfd_set_section_contents (abfd, asec, buffer, (file_ptr) 0, length))
2880 (*_bfd_error_handler) (_("failed to install new APUinfo section."));
2881
2882 free (buffer);
2883
2884 apuinfo_list_finish ();
2885 }
2886 \f
2887 static bfd_boolean
2888 is_nonpic_glink_stub (bfd *abfd, asection *glink, bfd_vma off)
2889 {
2890 bfd_byte buf[GLINK_ENTRY_SIZE];
2891
2892 if (!bfd_get_section_contents (abfd, glink, buf, off, GLINK_ENTRY_SIZE))
2893 return FALSE;
2894
2895 return ((bfd_get_32 (abfd, buf + 0) & 0xffff0000) == LIS_11
2896 && (bfd_get_32 (abfd, buf + 4) & 0xffff0000) == LWZ_11_11
2897 && bfd_get_32 (abfd, buf + 8) == MTCTR_11
2898 && bfd_get_32 (abfd, buf + 12) == BCTR);
2899 }
2900
2901 static bfd_boolean
2902 section_covers_vma (bfd *abfd ATTRIBUTE_UNUSED, asection *section, void *ptr)
2903 {
2904 bfd_vma vma = *(bfd_vma *) ptr;
2905 return ((section->flags & SEC_ALLOC) != 0
2906 && section->vma <= vma
2907 && vma < section->vma + section->size);
2908 }
2909
2910 static long
2911 ppc_elf_get_synthetic_symtab (bfd *abfd, long symcount, asymbol **syms,
2912 long dynsymcount, asymbol **dynsyms,
2913 asymbol **ret)
2914 {
2915 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
2916 asection *plt, *relplt, *dynamic, *glink;
2917 bfd_vma glink_vma = 0;
2918 bfd_vma resolv_vma = 0;
2919 bfd_vma stub_vma;
2920 asymbol *s;
2921 arelent *p;
2922 long count, i;
2923 size_t size;
2924 char *names;
2925 bfd_byte buf[4];
2926
2927 *ret = NULL;
2928
2929 if ((abfd->flags & (DYNAMIC | EXEC_P)) == 0)
2930 return 0;
2931
2932 if (dynsymcount <= 0)
2933 return 0;
2934
2935 relplt = bfd_get_section_by_name (abfd, ".rela.plt");
2936 if (relplt == NULL)
2937 return 0;
2938
2939 plt = bfd_get_section_by_name (abfd, ".plt");
2940 if (plt == NULL)
2941 return 0;
2942
2943 /* Call common code to handle old-style executable PLTs. */
2944 if (elf_section_flags (plt) & SHF_EXECINSTR)
2945 return _bfd_elf_get_synthetic_symtab (abfd, symcount, syms,
2946 dynsymcount, dynsyms, ret);
2947
2948 /* If this object was prelinked, the prelinker stored the address
2949 of .glink at got[1]. If it wasn't prelinked, got[1] will be zero. */
2950 dynamic = bfd_get_section_by_name (abfd, ".dynamic");
2951 if (dynamic != NULL)
2952 {
2953 bfd_byte *dynbuf, *extdyn, *extdynend;
2954 size_t extdynsize;
2955 void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *);
2956
2957 if (!bfd_malloc_and_get_section (abfd, dynamic, &dynbuf))
2958 return -1;
2959
2960 extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn;
2961 swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in;
2962
2963 extdyn = dynbuf;
2964 extdynend = extdyn + dynamic->size;
2965 for (; extdyn < extdynend; extdyn += extdynsize)
2966 {
2967 Elf_Internal_Dyn dyn;
2968 (*swap_dyn_in) (abfd, extdyn, &dyn);
2969
2970 if (dyn.d_tag == DT_NULL)
2971 break;
2972
2973 if (dyn.d_tag == DT_PPC_GOT)
2974 {
2975 unsigned int g_o_t = dyn.d_un.d_val;
2976 asection *got = bfd_get_section_by_name (abfd, ".got");
2977 if (got != NULL
2978 && bfd_get_section_contents (abfd, got, buf,
2979 g_o_t - got->vma + 4, 4))
2980 glink_vma = bfd_get_32 (abfd, buf);
2981 break;
2982 }
2983 }
2984 free (dynbuf);
2985 }
2986
2987 /* Otherwise we read the first plt entry. */
2988 if (glink_vma == 0)
2989 {
2990 if (bfd_get_section_contents (abfd, plt, buf, 0, 4))
2991 glink_vma = bfd_get_32 (abfd, buf);
2992 }
2993
2994 if (glink_vma == 0)
2995 return 0;
2996
2997 /* The .glink section usually does not survive the final
2998 link; search for the section (usually .text) where the
2999 glink stubs now reside. */
3000 glink = bfd_sections_find_if (abfd, section_covers_vma, &glink_vma);
3001 if (glink == NULL)
3002 return 0;
3003
3004 /* Determine glink PLT resolver by reading the relative branch
3005 from the first glink stub. */
3006 if (bfd_get_section_contents (abfd, glink, buf,
3007 glink_vma - glink->vma, 4))
3008 {
3009 unsigned int insn = bfd_get_32 (abfd, buf);
3010
3011 /* The first glink stub may either branch to the resolver ... */
3012 insn ^= B;
3013 if ((insn & ~0x3fffffc) == 0)
3014 resolv_vma = glink_vma + (insn ^ 0x2000000) - 0x2000000;
3015
3016 /* ... or fall through a bunch of NOPs. */
3017 else if ((insn ^ B ^ NOP) == 0)
3018 for (i = 4;
3019 bfd_get_section_contents (abfd, glink, buf,
3020 glink_vma - glink->vma + i, 4);
3021 i += 4)
3022 if (bfd_get_32 (abfd, buf) != NOP)
3023 {
3024 resolv_vma = glink_vma + i;
3025 break;
3026 }
3027 }
3028
3029 count = relplt->size / sizeof (Elf32_External_Rela);
3030 /* If the stubs are those for -shared/-pie then we might have
3031 multiple stubs for each plt entry. If that is the case then
3032 there is no way to associate stubs with their plt entries short
3033 of figuring out the GOT pointer value used in the stub. */
3034 if (!is_nonpic_glink_stub (abfd, glink,
3035 glink_vma - GLINK_ENTRY_SIZE - glink->vma))
3036 return 0;
3037
3038 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
3039 if (! (*slurp_relocs) (abfd, relplt, dynsyms, TRUE))
3040 return -1;
3041
3042 size = count * sizeof (asymbol);
3043 p = relplt->relocation;
3044 for (i = 0; i < count; i++, p++)
3045 {
3046 size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt");
3047 if (p->addend != 0)
3048 size += sizeof ("+0x") - 1 + 8;
3049 }
3050
3051 size += sizeof (asymbol) + sizeof ("__glink");
3052
3053 if (resolv_vma)
3054 size += sizeof (asymbol) + sizeof ("__glink_PLTresolve");
3055
3056 s = *ret = bfd_malloc (size);
3057 if (s == NULL)
3058 return -1;
3059
3060 stub_vma = glink_vma;
3061 names = (char *) (s + count + 1 + (resolv_vma != 0));
3062 p = relplt->relocation + count - 1;
3063 for (i = 0; i < count; i++)
3064 {
3065 size_t len;
3066
3067 *s = **p->sym_ptr_ptr;
3068 /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since
3069 we are defining a symbol, ensure one of them is set. */
3070 if ((s->flags & BSF_LOCAL) == 0)
3071 s->flags |= BSF_GLOBAL;
3072 s->flags |= BSF_SYNTHETIC;
3073 s->section = glink;
3074 stub_vma -= 16;
3075 if (strcmp ((*p->sym_ptr_ptr)->name, "__tls_get_addr_opt") == 0)
3076 stub_vma -= 32;
3077 s->value = stub_vma - glink->vma;
3078 s->name = names;
3079 s->udata.p = NULL;
3080 len = strlen ((*p->sym_ptr_ptr)->name);
3081 memcpy (names, (*p->sym_ptr_ptr)->name, len);
3082 names += len;
3083 if (p->addend != 0)
3084 {
3085 memcpy (names, "+0x", sizeof ("+0x") - 1);
3086 names += sizeof ("+0x") - 1;
3087 bfd_sprintf_vma (abfd, names, p->addend);
3088 names += strlen (names);
3089 }
3090 memcpy (names, "@plt", sizeof ("@plt"));
3091 names += sizeof ("@plt");
3092 ++s;
3093 --p;
3094 }
3095
3096 /* Add a symbol at the start of the glink branch table. */
3097 memset (s, 0, sizeof *s);
3098 s->the_bfd = abfd;
3099 s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
3100 s->section = glink;
3101 s->value = glink_vma - glink->vma;
3102 s->name = names;
3103 memcpy (names, "__glink", sizeof ("__glink"));
3104 names += sizeof ("__glink");
3105 s++;
3106 count++;
3107
3108 if (resolv_vma)
3109 {
3110 /* Add a symbol for the glink PLT resolver. */
3111 memset (s, 0, sizeof *s);
3112 s->the_bfd = abfd;
3113 s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
3114 s->section = glink;
3115 s->value = resolv_vma - glink->vma;
3116 s->name = names;
3117 memcpy (names, "__glink_PLTresolve", sizeof ("__glink_PLTresolve"));
3118 names += sizeof ("__glink_PLTresolve");
3119 s++;
3120 count++;
3121 }
3122
3123 return count;
3124 }
3125 \f
3126 /* The following functions are specific to the ELF linker, while
3127 functions above are used generally. They appear in this file more
3128 or less in the order in which they are called. eg.
3129 ppc_elf_check_relocs is called early in the link process,
3130 ppc_elf_finish_dynamic_sections is one of the last functions
3131 called. */
3132
3133 /* Track PLT entries needed for a given symbol. We might need more
3134 than one glink entry per symbol when generating a pic binary. */
3135 struct plt_entry
3136 {
3137 struct plt_entry *next;
3138
3139 /* -fPIC uses multiple GOT sections, one per file, called ".got2".
3140 This field stores the offset into .got2 used to initialise the
3141 GOT pointer reg. It will always be at least 32768. (Current
3142 gcc always uses an offset of 32768, but ld -r will pack .got2
3143 sections together resulting in larger offsets). */
3144 bfd_vma addend;
3145
3146 /* The .got2 section. */
3147 asection *sec;
3148
3149 /* PLT refcount or offset. */
3150 union
3151 {
3152 bfd_signed_vma refcount;
3153 bfd_vma offset;
3154 } plt;
3155
3156 /* .glink stub offset. */
3157 bfd_vma glink_offset;
3158 };
3159
3160 /* Of those relocs that might be copied as dynamic relocs, this function
3161 selects those that must be copied when linking a shared library,
3162 even when the symbol is local. */
3163
3164 static int
3165 must_be_dyn_reloc (struct bfd_link_info *info,
3166 enum elf_ppc_reloc_type r_type)
3167 {
3168 switch (r_type)
3169 {
3170 default:
3171 return 1;
3172
3173 case R_PPC_REL24:
3174 case R_PPC_REL14:
3175 case R_PPC_REL14_BRTAKEN:
3176 case R_PPC_REL14_BRNTAKEN:
3177 case R_PPC_REL32:
3178 return 0;
3179
3180 case R_PPC_TPREL32:
3181 case R_PPC_TPREL16:
3182 case R_PPC_TPREL16_LO:
3183 case R_PPC_TPREL16_HI:
3184 case R_PPC_TPREL16_HA:
3185 return !bfd_link_executable (info);
3186 }
3187 }
3188
3189 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
3190 copying dynamic variables from a shared lib into an app's dynbss
3191 section, and instead use a dynamic relocation to point into the
3192 shared lib. */
3193 #define ELIMINATE_COPY_RELOCS 1
3194
3195 /* Used to track dynamic relocations for local symbols. */
3196 struct ppc_dyn_relocs
3197 {
3198 struct ppc_dyn_relocs *next;
3199
3200 /* The input section of the reloc. */
3201 asection *sec;
3202
3203 /* Total number of relocs copied for the input section. */
3204 unsigned int count : 31;
3205
3206 /* Whether this entry is for STT_GNU_IFUNC symbols. */
3207 unsigned int ifunc : 1;
3208 };
3209
3210 /* PPC ELF linker hash entry. */
3211
3212 struct ppc_elf_link_hash_entry
3213 {
3214 struct elf_link_hash_entry elf;
3215
3216 /* If this symbol is used in the linker created sections, the processor
3217 specific backend uses this field to map the field into the offset
3218 from the beginning of the section. */
3219 elf_linker_section_pointers_t *linker_section_pointer;
3220
3221 /* Track dynamic relocs copied for this symbol. */
3222 struct elf_dyn_relocs *dyn_relocs;
3223
3224 /* Contexts in which symbol is used in the GOT (or TOC).
3225 TLS_GD .. TLS_TLS bits are or'd into the mask as the
3226 corresponding relocs are encountered during check_relocs.
3227 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
3228 indicate the corresponding GOT entry type is not needed. */
3229 #define TLS_GD 1 /* GD reloc. */
3230 #define TLS_LD 2 /* LD reloc. */
3231 #define TLS_TPREL 4 /* TPREL reloc, => IE. */
3232 #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
3233 #define TLS_TLS 16 /* Any TLS reloc. */
3234 #define TLS_TPRELGD 32 /* TPREL reloc resulting from GD->IE. */
3235 #define PLT_IFUNC 64 /* STT_GNU_IFUNC. */
3236 char tls_mask;
3237
3238 /* Nonzero if we have seen a small data relocation referring to this
3239 symbol. */
3240 unsigned char has_sda_refs : 1;
3241
3242 /* Flag use of given relocations. */
3243 unsigned char has_addr16_ha : 1;
3244 unsigned char has_addr16_lo : 1;
3245 };
3246
3247 #define ppc_elf_hash_entry(ent) ((struct ppc_elf_link_hash_entry *) (ent))
3248
3249 /* PPC ELF linker hash table. */
3250
3251 struct ppc_elf_link_hash_table
3252 {
3253 struct elf_link_hash_table elf;
3254
3255 /* Various options passed from the linker. */
3256 struct ppc_elf_params *params;
3257
3258 /* Short-cuts to get to dynamic linker sections. */
3259 asection *got;
3260 asection *relgot;
3261 asection *glink;
3262 asection *plt;
3263 asection *relplt;
3264 asection *iplt;
3265 asection *reliplt;
3266 asection *dynbss;
3267 asection *relbss;
3268 asection *dynsbss;
3269 asection *relsbss;
3270 elf_linker_section_t sdata[2];
3271 asection *sbss;
3272 asection *glink_eh_frame;
3273
3274 /* The (unloaded but important) .rela.plt.unloaded on VxWorks. */
3275 asection *srelplt2;
3276
3277 /* The .got.plt section (VxWorks only)*/
3278 asection *sgotplt;
3279
3280 /* Shortcut to __tls_get_addr. */
3281 struct elf_link_hash_entry *tls_get_addr;
3282
3283 /* The bfd that forced an old-style PLT. */
3284 bfd *old_bfd;
3285
3286 /* TLS local dynamic got entry handling. */
3287 union {
3288 bfd_signed_vma refcount;
3289 bfd_vma offset;
3290 } tlsld_got;
3291
3292 /* Offset of branch table to PltResolve function in glink. */
3293 bfd_vma glink_pltresolve;
3294
3295 /* Size of reserved GOT entries. */
3296 unsigned int got_header_size;
3297 /* Non-zero if allocating the header left a gap. */
3298 unsigned int got_gap;
3299
3300 /* The type of PLT we have chosen to use. */
3301 enum ppc_elf_plt_type plt_type;
3302
3303 /* True if the target system is VxWorks. */
3304 unsigned int is_vxworks:1;
3305
3306 /* The size of PLT entries. */
3307 int plt_entry_size;
3308 /* The distance between adjacent PLT slots. */
3309 int plt_slot_size;
3310 /* The size of the first PLT entry. */
3311 int plt_initial_entry_size;
3312
3313 /* Small local sym cache. */
3314 struct sym_cache sym_cache;
3315 };
3316
3317 /* Rename some of the generic section flags to better document how they
3318 are used for ppc32. The flags are only valid for ppc32 elf objects. */
3319
3320 /* Nonzero if this section has TLS related relocations. */
3321 #define has_tls_reloc sec_flg0
3322
3323 /* Nonzero if this section has a call to __tls_get_addr. */
3324 #define has_tls_get_addr_call sec_flg1
3325
3326 /* Get the PPC ELF linker hash table from a link_info structure. */
3327
3328 #define ppc_elf_hash_table(p) \
3329 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
3330 == PPC32_ELF_DATA ? ((struct ppc_elf_link_hash_table *) ((p)->hash)) : NULL)
3331
3332 /* Create an entry in a PPC ELF linker hash table. */
3333
3334 static struct bfd_hash_entry *
3335 ppc_elf_link_hash_newfunc (struct bfd_hash_entry *entry,
3336 struct bfd_hash_table *table,
3337 const char *string)
3338 {
3339 /* Allocate the structure if it has not already been allocated by a
3340 subclass. */
3341 if (entry == NULL)
3342 {
3343 entry = bfd_hash_allocate (table,
3344 sizeof (struct ppc_elf_link_hash_entry));
3345 if (entry == NULL)
3346 return entry;
3347 }
3348
3349 /* Call the allocation method of the superclass. */
3350 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
3351 if (entry != NULL)
3352 {
3353 ppc_elf_hash_entry (entry)->linker_section_pointer = NULL;
3354 ppc_elf_hash_entry (entry)->dyn_relocs = NULL;
3355 ppc_elf_hash_entry (entry)->tls_mask = 0;
3356 ppc_elf_hash_entry (entry)->has_sda_refs = 0;
3357 }
3358
3359 return entry;
3360 }
3361
3362 /* Create a PPC ELF linker hash table. */
3363
3364 static struct bfd_link_hash_table *
3365 ppc_elf_link_hash_table_create (bfd *abfd)
3366 {
3367 struct ppc_elf_link_hash_table *ret;
3368 static struct ppc_elf_params default_params
3369 = { PLT_OLD, 0, 1, 0, 0, 12, 0, 0 };
3370
3371 ret = bfd_zmalloc (sizeof (struct ppc_elf_link_hash_table));
3372 if (ret == NULL)
3373 return NULL;
3374
3375 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd,
3376 ppc_elf_link_hash_newfunc,
3377 sizeof (struct ppc_elf_link_hash_entry),
3378 PPC32_ELF_DATA))
3379 {
3380 free (ret);
3381 return NULL;
3382 }
3383
3384 ret->elf.init_plt_refcount.refcount = 0;
3385 ret->elf.init_plt_refcount.glist = NULL;
3386 ret->elf.init_plt_offset.offset = 0;
3387 ret->elf.init_plt_offset.glist = NULL;
3388
3389 ret->params = &default_params;
3390
3391 ret->sdata[0].name = ".sdata";
3392 ret->sdata[0].sym_name = "_SDA_BASE_";
3393 ret->sdata[0].bss_name = ".sbss";
3394
3395 ret->sdata[1].name = ".sdata2";
3396 ret->sdata[1].sym_name = "_SDA2_BASE_";
3397 ret->sdata[1].bss_name = ".sbss2";
3398
3399 ret->plt_entry_size = 12;
3400 ret->plt_slot_size = 8;
3401 ret->plt_initial_entry_size = 72;
3402
3403 return &ret->elf.root;
3404 }
3405
3406 /* Hook linker params into hash table. */
3407
3408 void
3409 ppc_elf_link_params (struct bfd_link_info *info, struct ppc_elf_params *params)
3410 {
3411 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
3412
3413 if (htab)
3414 htab->params = params;
3415 params->pagesize_p2 = bfd_log2 (params->pagesize);
3416 }
3417
3418 /* Create .got and the related sections. */
3419
3420 static bfd_boolean
3421 ppc_elf_create_got (bfd *abfd, struct bfd_link_info *info)
3422 {
3423 struct ppc_elf_link_hash_table *htab;
3424 asection *s;
3425 flagword flags;
3426
3427 if (!_bfd_elf_create_got_section (abfd, info))
3428 return FALSE;
3429
3430 htab = ppc_elf_hash_table (info);
3431 htab->got = s = bfd_get_linker_section (abfd, ".got");
3432 if (s == NULL)
3433 abort ();
3434
3435 if (htab->is_vxworks)
3436 {
3437 htab->sgotplt = bfd_get_linker_section (abfd, ".got.plt");
3438 if (!htab->sgotplt)
3439 abort ();
3440 }
3441 else
3442 {
3443 /* The powerpc .got has a blrl instruction in it. Mark it
3444 executable. */
3445 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS
3446 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3447 if (!bfd_set_section_flags (abfd, s, flags))
3448 return FALSE;
3449 }
3450
3451 htab->relgot = bfd_get_linker_section (abfd, ".rela.got");
3452 if (!htab->relgot)
3453 abort ();
3454
3455 return TRUE;
3456 }
3457
3458 /* Create a special linker section, used for R_PPC_EMB_SDAI16 and
3459 R_PPC_EMB_SDA2I16 pointers. These sections become part of .sdata
3460 and .sdata2. Create _SDA_BASE_ and _SDA2_BASE too. */
3461
3462 static bfd_boolean
3463 ppc_elf_create_linker_section (bfd *abfd,
3464 struct bfd_link_info *info,
3465 flagword flags,
3466 elf_linker_section_t *lsect)
3467 {
3468 asection *s;
3469
3470 flags |= (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
3471 | SEC_LINKER_CREATED);
3472
3473 s = bfd_make_section_anyway_with_flags (abfd, lsect->name, flags);
3474 if (s == NULL)
3475 return FALSE;
3476 lsect->section = s;
3477
3478 /* Define the sym on the first section of this name. */
3479 s = bfd_get_section_by_name (abfd, lsect->name);
3480
3481 lsect->sym = _bfd_elf_define_linkage_sym (abfd, info, s, lsect->sym_name);
3482 if (lsect->sym == NULL)
3483 return FALSE;
3484 lsect->sym->root.u.def.value = 0x8000;
3485 return TRUE;
3486 }
3487
3488 static bfd_boolean
3489 ppc_elf_create_glink (bfd *abfd, struct bfd_link_info *info)
3490 {
3491 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
3492 asection *s;
3493 flagword flags;
3494
3495 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY | SEC_HAS_CONTENTS
3496 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3497 s = bfd_make_section_anyway_with_flags (abfd, ".glink", flags);
3498 htab->glink = s;
3499 if (s == NULL
3500 || !bfd_set_section_alignment (abfd, s,
3501 htab->params->ppc476_workaround ? 6 : 4))
3502 return FALSE;
3503
3504 if (!info->no_ld_generated_unwind_info)
3505 {
3506 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
3507 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3508 s = bfd_make_section_anyway_with_flags (abfd, ".eh_frame", flags);
3509 htab->glink_eh_frame = s;
3510 if (s == NULL
3511 || !bfd_set_section_alignment (abfd, s, 2))
3512 return FALSE;
3513 }
3514
3515 flags = SEC_ALLOC | SEC_LINKER_CREATED;
3516 s = bfd_make_section_anyway_with_flags (abfd, ".iplt", flags);
3517 htab->iplt = s;
3518 if (s == NULL
3519 || !bfd_set_section_alignment (abfd, s, 4))
3520 return FALSE;
3521
3522 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
3523 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3524 s = bfd_make_section_anyway_with_flags (abfd, ".rela.iplt", flags);
3525 htab->reliplt = s;
3526 if (s == NULL
3527 || ! bfd_set_section_alignment (abfd, s, 2))
3528 return FALSE;
3529
3530 if (!ppc_elf_create_linker_section (abfd, info, 0,
3531 &htab->sdata[0]))
3532 return FALSE;
3533
3534 if (!ppc_elf_create_linker_section (abfd, info, SEC_READONLY,
3535 &htab->sdata[1]))
3536 return FALSE;
3537
3538 return TRUE;
3539 }
3540
3541 /* We have to create .dynsbss and .rela.sbss here so that they get mapped
3542 to output sections (just like _bfd_elf_create_dynamic_sections has
3543 to create .dynbss and .rela.bss). */
3544
3545 static bfd_boolean
3546 ppc_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
3547 {
3548 struct ppc_elf_link_hash_table *htab;
3549 asection *s;
3550 flagword flags;
3551
3552 htab = ppc_elf_hash_table (info);
3553
3554 if (htab->got == NULL
3555 && !ppc_elf_create_got (abfd, info))
3556 return FALSE;
3557
3558 if (!_bfd_elf_create_dynamic_sections (abfd, info))
3559 return FALSE;
3560
3561 if (htab->glink == NULL
3562 && !ppc_elf_create_glink (abfd, info))
3563 return FALSE;
3564
3565 htab->dynbss = bfd_get_linker_section (abfd, ".dynbss");
3566 s = bfd_make_section_anyway_with_flags (abfd, ".dynsbss",
3567 SEC_ALLOC | SEC_LINKER_CREATED);
3568 htab->dynsbss = s;
3569 if (s == NULL)
3570 return FALSE;
3571
3572 if (! bfd_link_pic (info))
3573 {
3574 htab->relbss = bfd_get_linker_section (abfd, ".rela.bss");
3575 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
3576 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3577 s = bfd_make_section_anyway_with_flags (abfd, ".rela.sbss", flags);
3578 htab->relsbss = s;
3579 if (s == NULL
3580 || ! bfd_set_section_alignment (abfd, s, 2))
3581 return FALSE;
3582 }
3583
3584 if (htab->is_vxworks
3585 && !elf_vxworks_create_dynamic_sections (abfd, info, &htab->srelplt2))
3586 return FALSE;
3587
3588 htab->relplt = bfd_get_linker_section (abfd, ".rela.plt");
3589 htab->plt = s = bfd_get_linker_section (abfd, ".plt");
3590 if (s == NULL)
3591 abort ();
3592
3593 flags = SEC_ALLOC | SEC_CODE | SEC_LINKER_CREATED;
3594 if (htab->plt_type == PLT_VXWORKS)
3595 /* The VxWorks PLT is a loaded section with contents. */
3596 flags |= SEC_HAS_CONTENTS | SEC_LOAD | SEC_READONLY;
3597 return bfd_set_section_flags (abfd, s, flags);
3598 }
3599
3600 /* Copy the extra info we tack onto an elf_link_hash_entry. */
3601
3602 static void
3603 ppc_elf_copy_indirect_symbol (struct bfd_link_info *info,
3604 struct elf_link_hash_entry *dir,
3605 struct elf_link_hash_entry *ind)
3606 {
3607 struct ppc_elf_link_hash_entry *edir, *eind;
3608
3609 edir = (struct ppc_elf_link_hash_entry *) dir;
3610 eind = (struct ppc_elf_link_hash_entry *) ind;
3611
3612 edir->tls_mask |= eind->tls_mask;
3613 edir->has_sda_refs |= eind->has_sda_refs;
3614
3615 /* If called to transfer flags for a weakdef during processing
3616 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
3617 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
3618 if (!(ELIMINATE_COPY_RELOCS
3619 && eind->elf.root.type != bfd_link_hash_indirect
3620 && edir->elf.dynamic_adjusted))
3621 edir->elf.non_got_ref |= eind->elf.non_got_ref;
3622
3623 edir->elf.ref_dynamic |= eind->elf.ref_dynamic;
3624 edir->elf.ref_regular |= eind->elf.ref_regular;
3625 edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak;
3626 edir->elf.needs_plt |= eind->elf.needs_plt;
3627 edir->elf.pointer_equality_needed |= eind->elf.pointer_equality_needed;
3628
3629 if (eind->dyn_relocs != NULL)
3630 {
3631 if (edir->dyn_relocs != NULL)
3632 {
3633 struct elf_dyn_relocs **pp;
3634 struct elf_dyn_relocs *p;
3635
3636 /* Add reloc counts against the indirect sym to the direct sym
3637 list. Merge any entries against the same section. */
3638 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
3639 {
3640 struct elf_dyn_relocs *q;
3641
3642 for (q = edir->dyn_relocs; q != NULL; q = q->next)
3643 if (q->sec == p->sec)
3644 {
3645 q->pc_count += p->pc_count;
3646 q->count += p->count;
3647 *pp = p->next;
3648 break;
3649 }
3650 if (q == NULL)
3651 pp = &p->next;
3652 }
3653 *pp = edir->dyn_relocs;
3654 }
3655
3656 edir->dyn_relocs = eind->dyn_relocs;
3657 eind->dyn_relocs = NULL;
3658 }
3659
3660 /* If we were called to copy over info for a weak sym, that's all.
3661 You might think dyn_relocs need not be copied over; After all,
3662 both syms will be dynamic or both non-dynamic so we're just
3663 moving reloc accounting around. However, ELIMINATE_COPY_RELOCS
3664 code in ppc_elf_adjust_dynamic_symbol needs to check for
3665 dyn_relocs in read-only sections, and it does so on what is the
3666 DIR sym here. */
3667 if (eind->elf.root.type != bfd_link_hash_indirect)
3668 return;
3669
3670 /* Copy over the GOT refcount entries that we may have already seen to
3671 the symbol which just became indirect. */
3672 edir->elf.got.refcount += eind->elf.got.refcount;
3673 eind->elf.got.refcount = 0;
3674
3675 /* And plt entries. */
3676 if (eind->elf.plt.plist != NULL)
3677 {
3678 if (edir->elf.plt.plist != NULL)
3679 {
3680 struct plt_entry **entp;
3681 struct plt_entry *ent;
3682
3683 for (entp = &eind->elf.plt.plist; (ent = *entp) != NULL; )
3684 {
3685 struct plt_entry *dent;
3686
3687 for (dent = edir->elf.plt.plist; dent != NULL; dent = dent->next)
3688 if (dent->sec == ent->sec && dent->addend == ent->addend)
3689 {
3690 dent->plt.refcount += ent->plt.refcount;
3691 *entp = ent->next;
3692 break;
3693 }
3694 if (dent == NULL)
3695 entp = &ent->next;
3696 }
3697 *entp = edir->elf.plt.plist;
3698 }
3699
3700 edir->elf.plt.plist = eind->elf.plt.plist;
3701 eind->elf.plt.plist = NULL;
3702 }
3703
3704 if (eind->elf.dynindx != -1)
3705 {
3706 if (edir->elf.dynindx != -1)
3707 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
3708 edir->elf.dynstr_index);
3709 edir->elf.dynindx = eind->elf.dynindx;
3710 edir->elf.dynstr_index = eind->elf.dynstr_index;
3711 eind->elf.dynindx = -1;
3712 eind->elf.dynstr_index = 0;
3713 }
3714 }
3715
3716 /* Hook called by the linker routine which adds symbols from an object
3717 file. We use it to put .comm items in .sbss, and not .bss. */
3718
3719 static bfd_boolean
3720 ppc_elf_add_symbol_hook (bfd *abfd,
3721 struct bfd_link_info *info,
3722 Elf_Internal_Sym *sym,
3723 const char **namep ATTRIBUTE_UNUSED,
3724 flagword *flagsp ATTRIBUTE_UNUSED,
3725 asection **secp,
3726 bfd_vma *valp)
3727 {
3728 if (sym->st_shndx == SHN_COMMON
3729 && !bfd_link_relocatable (info)
3730 && is_ppc_elf (info->output_bfd)
3731 && sym->st_size <= elf_gp_size (abfd))
3732 {
3733 /* Common symbols less than or equal to -G nn bytes are automatically
3734 put into .sbss. */
3735 struct ppc_elf_link_hash_table *htab;
3736
3737 htab = ppc_elf_hash_table (info);
3738 if (htab->sbss == NULL)
3739 {
3740 flagword flags = SEC_IS_COMMON | SEC_LINKER_CREATED;
3741
3742 if (!htab->elf.dynobj)
3743 htab->elf.dynobj = abfd;
3744
3745 htab->sbss = bfd_make_section_anyway_with_flags (htab->elf.dynobj,
3746 ".sbss",
3747 flags);
3748 if (htab->sbss == NULL)
3749 return FALSE;
3750 }
3751
3752 *secp = htab->sbss;
3753 *valp = sym->st_size;
3754 }
3755
3756 if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC
3757 && (abfd->flags & DYNAMIC) == 0
3758 && bfd_get_flavour (info->output_bfd) == bfd_target_elf_flavour)
3759 elf_tdata (info->output_bfd)->has_gnu_symbols |= elf_gnu_symbol_ifunc;
3760
3761 return TRUE;
3762 }
3763 \f
3764 /* Find a linker generated pointer with a given addend and type. */
3765
3766 static elf_linker_section_pointers_t *
3767 elf_find_pointer_linker_section
3768 (elf_linker_section_pointers_t *linker_pointers,
3769 bfd_vma addend,
3770 elf_linker_section_t *lsect)
3771 {
3772 for ( ; linker_pointers != NULL; linker_pointers = linker_pointers->next)
3773 if (lsect == linker_pointers->lsect && addend == linker_pointers->addend)
3774 return linker_pointers;
3775
3776 return NULL;
3777 }
3778
3779 /* Allocate a pointer to live in a linker created section. */
3780
3781 static bfd_boolean
3782 elf_allocate_pointer_linker_section (bfd *abfd,
3783 elf_linker_section_t *lsect,
3784 struct elf_link_hash_entry *h,
3785 const Elf_Internal_Rela *rel)
3786 {
3787 elf_linker_section_pointers_t **ptr_linker_section_ptr = NULL;
3788 elf_linker_section_pointers_t *linker_section_ptr;
3789 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
3790 bfd_size_type amt;
3791
3792 BFD_ASSERT (lsect != NULL);
3793
3794 /* Is this a global symbol? */
3795 if (h != NULL)
3796 {
3797 struct ppc_elf_link_hash_entry *eh;
3798
3799 /* Has this symbol already been allocated? If so, our work is done. */
3800 eh = (struct ppc_elf_link_hash_entry *) h;
3801 if (elf_find_pointer_linker_section (eh->linker_section_pointer,
3802 rel->r_addend,
3803 lsect))
3804 return TRUE;
3805
3806 ptr_linker_section_ptr = &eh->linker_section_pointer;
3807 }
3808 else
3809 {
3810 BFD_ASSERT (is_ppc_elf (abfd));
3811
3812 /* Allocation of a pointer to a local symbol. */
3813 elf_linker_section_pointers_t **ptr = elf_local_ptr_offsets (abfd);
3814
3815 /* Allocate a table to hold the local symbols if first time. */
3816 if (!ptr)
3817 {
3818 unsigned int num_symbols = elf_symtab_hdr (abfd).sh_info;
3819
3820 amt = num_symbols;
3821 amt *= sizeof (elf_linker_section_pointers_t *);
3822 ptr = bfd_zalloc (abfd, amt);
3823
3824 if (!ptr)
3825 return FALSE;
3826
3827 elf_local_ptr_offsets (abfd) = ptr;
3828 }
3829
3830 /* Has this symbol already been allocated? If so, our work is done. */
3831 if (elf_find_pointer_linker_section (ptr[r_symndx],
3832 rel->r_addend,
3833 lsect))
3834 return TRUE;
3835
3836 ptr_linker_section_ptr = &ptr[r_symndx];
3837 }
3838
3839 /* Allocate space for a pointer in the linker section, and allocate
3840 a new pointer record from internal memory. */
3841 BFD_ASSERT (ptr_linker_section_ptr != NULL);
3842 amt = sizeof (elf_linker_section_pointers_t);
3843 linker_section_ptr = bfd_alloc (abfd, amt);
3844
3845 if (!linker_section_ptr)
3846 return FALSE;
3847
3848 linker_section_ptr->next = *ptr_linker_section_ptr;
3849 linker_section_ptr->addend = rel->r_addend;
3850 linker_section_ptr->lsect = lsect;
3851 *ptr_linker_section_ptr = linker_section_ptr;
3852
3853 if (!bfd_set_section_alignment (lsect->section->owner, lsect->section, 2))
3854 return FALSE;
3855 linker_section_ptr->offset = lsect->section->size;
3856 lsect->section->size += 4;
3857
3858 #ifdef DEBUG
3859 fprintf (stderr,
3860 "Create pointer in linker section %s, offset = %ld, section size = %ld\n",
3861 lsect->name, (long) linker_section_ptr->offset,
3862 (long) lsect->section->size);
3863 #endif
3864
3865 return TRUE;
3866 }
3867
3868 static struct plt_entry **
3869 update_local_sym_info (bfd *abfd,
3870 Elf_Internal_Shdr *symtab_hdr,
3871 unsigned long r_symndx,
3872 int tls_type)
3873 {
3874 bfd_signed_vma *local_got_refcounts = elf_local_got_refcounts (abfd);
3875 struct plt_entry **local_plt;
3876 char *local_got_tls_masks;
3877
3878 if (local_got_refcounts == NULL)
3879 {
3880 bfd_size_type size = symtab_hdr->sh_info;
3881
3882 size *= (sizeof (*local_got_refcounts)
3883 + sizeof (*local_plt)
3884 + sizeof (*local_got_tls_masks));
3885 local_got_refcounts = bfd_zalloc (abfd, size);
3886 if (local_got_refcounts == NULL)
3887 return NULL;
3888 elf_local_got_refcounts (abfd) = local_got_refcounts;
3889 }
3890
3891 local_plt = (struct plt_entry **) (local_got_refcounts + symtab_hdr->sh_info);
3892 local_got_tls_masks = (char *) (local_plt + symtab_hdr->sh_info);
3893 local_got_tls_masks[r_symndx] |= tls_type;
3894 if (tls_type != PLT_IFUNC)
3895 local_got_refcounts[r_symndx] += 1;
3896 return local_plt + r_symndx;
3897 }
3898
3899 static bfd_boolean
3900 update_plt_info (bfd *abfd, struct plt_entry **plist,
3901 asection *sec, bfd_vma addend)
3902 {
3903 struct plt_entry *ent;
3904
3905 if (addend < 32768)
3906 sec = NULL;
3907 for (ent = *plist; ent != NULL; ent = ent->next)
3908 if (ent->sec == sec && ent->addend == addend)
3909 break;
3910 if (ent == NULL)
3911 {
3912 bfd_size_type amt = sizeof (*ent);
3913 ent = bfd_alloc (abfd, amt);
3914 if (ent == NULL)
3915 return FALSE;
3916 ent->next = *plist;
3917 ent->sec = sec;
3918 ent->addend = addend;
3919 ent->plt.refcount = 0;
3920 *plist = ent;
3921 }
3922 ent->plt.refcount += 1;
3923 return TRUE;
3924 }
3925
3926 static struct plt_entry *
3927 find_plt_ent (struct plt_entry **plist, asection *sec, bfd_vma addend)
3928 {
3929 struct plt_entry *ent;
3930
3931 if (addend < 32768)
3932 sec = NULL;
3933 for (ent = *plist; ent != NULL; ent = ent->next)
3934 if (ent->sec == sec && ent->addend == addend)
3935 break;
3936 return ent;
3937 }
3938
3939 static bfd_boolean
3940 is_branch_reloc (enum elf_ppc_reloc_type r_type)
3941 {
3942 return (r_type == R_PPC_PLTREL24
3943 || r_type == R_PPC_LOCAL24PC
3944 || r_type == R_PPC_REL24
3945 || r_type == R_PPC_REL14
3946 || r_type == R_PPC_REL14_BRTAKEN
3947 || r_type == R_PPC_REL14_BRNTAKEN
3948 || r_type == R_PPC_ADDR24
3949 || r_type == R_PPC_ADDR14
3950 || r_type == R_PPC_ADDR14_BRTAKEN
3951 || r_type == R_PPC_ADDR14_BRNTAKEN);
3952 }
3953
3954 static void
3955 bad_shared_reloc (bfd *abfd, enum elf_ppc_reloc_type r_type)
3956 {
3957 (*_bfd_error_handler)
3958 (_("%B: relocation %s cannot be used when making a shared object"),
3959 abfd,
3960 ppc_elf_howto_table[r_type]->name);
3961 bfd_set_error (bfd_error_bad_value);
3962 }
3963
3964 /* Look through the relocs for a section during the first phase, and
3965 allocate space in the global offset table or procedure linkage
3966 table. */
3967
3968 static bfd_boolean
3969 ppc_elf_check_relocs (bfd *abfd,
3970 struct bfd_link_info *info,
3971 asection *sec,
3972 const Elf_Internal_Rela *relocs)
3973 {
3974 struct ppc_elf_link_hash_table *htab;
3975 Elf_Internal_Shdr *symtab_hdr;
3976 struct elf_link_hash_entry **sym_hashes;
3977 const Elf_Internal_Rela *rel;
3978 const Elf_Internal_Rela *rel_end;
3979 asection *got2, *sreloc;
3980 struct elf_link_hash_entry *tga;
3981
3982 if (bfd_link_relocatable (info))
3983 return TRUE;
3984
3985 /* Don't do anything special with non-loaded, non-alloced sections.
3986 In particular, any relocs in such sections should not affect GOT
3987 and PLT reference counting (ie. we don't allow them to create GOT
3988 or PLT entries), there's no possibility or desire to optimize TLS
3989 relocs, and there's not much point in propagating relocs to shared
3990 libs that the dynamic linker won't relocate. */
3991 if ((sec->flags & SEC_ALLOC) == 0)
3992 return TRUE;
3993
3994 #ifdef DEBUG
3995 _bfd_error_handler ("ppc_elf_check_relocs called for section %A in %B",
3996 sec, abfd);
3997 #endif
3998
3999 BFD_ASSERT (is_ppc_elf (abfd));
4000
4001 /* Initialize howto table if not already done. */
4002 if (!ppc_elf_howto_table[R_PPC_ADDR32])
4003 ppc_elf_howto_init ();
4004
4005 htab = ppc_elf_hash_table (info);
4006 if (htab->glink == NULL)
4007 {
4008 if (htab->elf.dynobj == NULL)
4009 htab->elf.dynobj = abfd;
4010 if (!ppc_elf_create_glink (htab->elf.dynobj, info))
4011 return FALSE;
4012 }
4013 tga = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
4014 FALSE, FALSE, TRUE);
4015 symtab_hdr = &elf_symtab_hdr (abfd);
4016 sym_hashes = elf_sym_hashes (abfd);
4017 got2 = bfd_get_section_by_name (abfd, ".got2");
4018 sreloc = NULL;
4019
4020 rel_end = relocs + sec->reloc_count;
4021 for (rel = relocs; rel < rel_end; rel++)
4022 {
4023 unsigned long r_symndx;
4024 enum elf_ppc_reloc_type r_type;
4025 struct elf_link_hash_entry *h;
4026 int tls_type;
4027 struct plt_entry **ifunc;
4028
4029 r_symndx = ELF32_R_SYM (rel->r_info);
4030 if (r_symndx < symtab_hdr->sh_info)
4031 h = NULL;
4032 else
4033 {
4034 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4035 while (h->root.type == bfd_link_hash_indirect
4036 || h->root.type == bfd_link_hash_warning)
4037 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4038
4039 /* PR15323, ref flags aren't set for references in the same
4040 object. */
4041 h->root.non_ir_ref = 1;
4042 }
4043
4044 /* If a relocation refers to _GLOBAL_OFFSET_TABLE_, create the .got.
4045 This shows up in particular in an R_PPC_ADDR32 in the eabi
4046 startup code. */
4047 if (h != NULL
4048 && htab->got == NULL
4049 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
4050 {
4051 if (htab->elf.dynobj == NULL)
4052 htab->elf.dynobj = abfd;
4053 if (!ppc_elf_create_got (htab->elf.dynobj, info))
4054 return FALSE;
4055 BFD_ASSERT (h == htab->elf.hgot);
4056 }
4057
4058 tls_type = 0;
4059 r_type = ELF32_R_TYPE (rel->r_info);
4060 ifunc = NULL;
4061 if (h == NULL && !htab->is_vxworks)
4062 {
4063 Elf_Internal_Sym *isym = bfd_sym_from_r_symndx (&htab->sym_cache,
4064 abfd, r_symndx);
4065 if (isym == NULL)
4066 return FALSE;
4067
4068 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
4069 {
4070 /* Set PLT_IFUNC flag for this sym, no GOT entry yet. */
4071 ifunc = update_local_sym_info (abfd, symtab_hdr, r_symndx,
4072 PLT_IFUNC);
4073 if (ifunc == NULL)
4074 return FALSE;
4075
4076 /* STT_GNU_IFUNC symbols must have a PLT entry;
4077 In a non-pie executable even when there are
4078 no plt calls. */
4079 if (!bfd_link_pic (info)
4080 || is_branch_reloc (r_type))
4081 {
4082 bfd_vma addend = 0;
4083 if (r_type == R_PPC_PLTREL24)
4084 {
4085 ppc_elf_tdata (abfd)->makes_plt_call = 1;
4086 if (bfd_link_pic (info))
4087 addend = rel->r_addend;
4088 }
4089 if (!update_plt_info (abfd, ifunc, got2, addend))
4090 return FALSE;
4091 }
4092 }
4093 }
4094
4095 if (!htab->is_vxworks
4096 && is_branch_reloc (r_type)
4097 && h != NULL
4098 && h == tga)
4099 {
4100 if (rel != relocs
4101 && (ELF32_R_TYPE (rel[-1].r_info) == R_PPC_TLSGD
4102 || ELF32_R_TYPE (rel[-1].r_info) == R_PPC_TLSLD))
4103 /* We have a new-style __tls_get_addr call with a marker
4104 reloc. */
4105 ;
4106 else
4107 /* Mark this section as having an old-style call. */
4108 sec->has_tls_get_addr_call = 1;
4109 }
4110
4111 switch (r_type)
4112 {
4113 case R_PPC_TLSGD:
4114 case R_PPC_TLSLD:
4115 /* These special tls relocs tie a call to __tls_get_addr with
4116 its parameter symbol. */
4117 break;
4118
4119 case R_PPC_GOT_TLSLD16:
4120 case R_PPC_GOT_TLSLD16_LO:
4121 case R_PPC_GOT_TLSLD16_HI:
4122 case R_PPC_GOT_TLSLD16_HA:
4123 tls_type = TLS_TLS | TLS_LD;
4124 goto dogottls;
4125
4126 case R_PPC_GOT_TLSGD16:
4127 case R_PPC_GOT_TLSGD16_LO:
4128 case R_PPC_GOT_TLSGD16_HI:
4129 case R_PPC_GOT_TLSGD16_HA:
4130 tls_type = TLS_TLS | TLS_GD;
4131 goto dogottls;
4132
4133 case R_PPC_GOT_TPREL16:
4134 case R_PPC_GOT_TPREL16_LO:
4135 case R_PPC_GOT_TPREL16_HI:
4136 case R_PPC_GOT_TPREL16_HA:
4137 if (bfd_link_pic (info))
4138 info->flags |= DF_STATIC_TLS;
4139 tls_type = TLS_TLS | TLS_TPREL;
4140 goto dogottls;
4141
4142 case R_PPC_GOT_DTPREL16:
4143 case R_PPC_GOT_DTPREL16_LO:
4144 case R_PPC_GOT_DTPREL16_HI:
4145 case R_PPC_GOT_DTPREL16_HA:
4146 tls_type = TLS_TLS | TLS_DTPREL;
4147 dogottls:
4148 sec->has_tls_reloc = 1;
4149 /* Fall thru */
4150
4151 /* GOT16 relocations */
4152 case R_PPC_GOT16:
4153 case R_PPC_GOT16_LO:
4154 case R_PPC_GOT16_HI:
4155 case R_PPC_GOT16_HA:
4156 /* This symbol requires a global offset table entry. */
4157 if (htab->got == NULL)
4158 {
4159 if (htab->elf.dynobj == NULL)
4160 htab->elf.dynobj = abfd;
4161 if (!ppc_elf_create_got (htab->elf.dynobj, info))
4162 return FALSE;
4163 }
4164 if (h != NULL)
4165 {
4166 h->got.refcount += 1;
4167 ppc_elf_hash_entry (h)->tls_mask |= tls_type;
4168 }
4169 else
4170 /* This is a global offset table entry for a local symbol. */
4171 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, tls_type))
4172 return FALSE;
4173
4174 /* We may also need a plt entry if the symbol turns out to be
4175 an ifunc. */
4176 if (h != NULL && !bfd_link_pic (info))
4177 {
4178 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
4179 return FALSE;
4180 }
4181 break;
4182
4183 /* Indirect .sdata relocation. */
4184 case R_PPC_EMB_SDAI16:
4185 if (bfd_link_pic (info))
4186 {
4187 bad_shared_reloc (abfd, r_type);
4188 return FALSE;
4189 }
4190 htab->sdata[0].sym->ref_regular = 1;
4191 if (!elf_allocate_pointer_linker_section (abfd, &htab->sdata[0],
4192 h, rel))
4193 return FALSE;
4194 if (h != NULL)
4195 {
4196 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4197 h->non_got_ref = TRUE;
4198 }
4199 break;
4200
4201 /* Indirect .sdata2 relocation. */
4202 case R_PPC_EMB_SDA2I16:
4203 if (bfd_link_pic (info))
4204 {
4205 bad_shared_reloc (abfd, r_type);
4206 return FALSE;
4207 }
4208 htab->sdata[1].sym->ref_regular = 1;
4209 if (!elf_allocate_pointer_linker_section (abfd, &htab->sdata[1],
4210 h, rel))
4211 return FALSE;
4212 if (h != NULL)
4213 {
4214 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4215 h->non_got_ref = TRUE;
4216 }
4217 break;
4218
4219 case R_PPC_SDAREL16:
4220 htab->sdata[0].sym->ref_regular = 1;
4221 /* Fall thru */
4222
4223 case R_PPC_VLE_SDAREL_LO16A:
4224 case R_PPC_VLE_SDAREL_LO16D:
4225 case R_PPC_VLE_SDAREL_HI16A:
4226 case R_PPC_VLE_SDAREL_HI16D:
4227 case R_PPC_VLE_SDAREL_HA16A:
4228 case R_PPC_VLE_SDAREL_HA16D:
4229 if (h != NULL)
4230 {
4231 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4232 h->non_got_ref = TRUE;
4233 }
4234 break;
4235
4236 case R_PPC_VLE_REL8:
4237 case R_PPC_VLE_REL15:
4238 case R_PPC_VLE_REL24:
4239 case R_PPC_VLE_LO16A:
4240 case R_PPC_VLE_LO16D:
4241 case R_PPC_VLE_HI16A:
4242 case R_PPC_VLE_HI16D:
4243 case R_PPC_VLE_HA16A:
4244 case R_PPC_VLE_HA16D:
4245 break;
4246
4247 case R_PPC_EMB_SDA2REL:
4248 if (bfd_link_pic (info))
4249 {
4250 bad_shared_reloc (abfd, r_type);
4251 return FALSE;
4252 }
4253 htab->sdata[1].sym->ref_regular = 1;
4254 if (h != NULL)
4255 {
4256 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4257 h->non_got_ref = TRUE;
4258 }
4259 break;
4260
4261 case R_PPC_VLE_SDA21_LO:
4262 case R_PPC_VLE_SDA21:
4263 case R_PPC_EMB_SDA21:
4264 case R_PPC_EMB_RELSDA:
4265 if (bfd_link_pic (info))
4266 {
4267 bad_shared_reloc (abfd, r_type);
4268 return FALSE;
4269 }
4270 if (h != NULL)
4271 {
4272 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4273 h->non_got_ref = TRUE;
4274 }
4275 break;
4276
4277 case R_PPC_EMB_NADDR32:
4278 case R_PPC_EMB_NADDR16:
4279 case R_PPC_EMB_NADDR16_LO:
4280 case R_PPC_EMB_NADDR16_HI:
4281 case R_PPC_EMB_NADDR16_HA:
4282 if (bfd_link_pic (info))
4283 {
4284 bad_shared_reloc (abfd, r_type);
4285 return FALSE;
4286 }
4287 if (h != NULL)
4288 h->non_got_ref = TRUE;
4289 break;
4290
4291 case R_PPC_PLTREL24:
4292 if (h == NULL)
4293 break;
4294 /* Fall through */
4295 case R_PPC_PLT32:
4296 case R_PPC_PLTREL32:
4297 case R_PPC_PLT16_LO:
4298 case R_PPC_PLT16_HI:
4299 case R_PPC_PLT16_HA:
4300 #ifdef DEBUG
4301 fprintf (stderr, "Reloc requires a PLT entry\n");
4302 #endif
4303 /* This symbol requires a procedure linkage table entry. */
4304 if (h == NULL)
4305 {
4306 if (ifunc == NULL)
4307 {
4308 /* It does not make sense to have a procedure linkage
4309 table entry for a non-ifunc local symbol. */
4310 info->callbacks->einfo
4311 (_("%P: %H: %s reloc against local symbol\n"),
4312 abfd, sec, rel->r_offset,
4313 ppc_elf_howto_table[r_type]->name);
4314 bfd_set_error (bfd_error_bad_value);
4315 return FALSE;
4316 }
4317 }
4318 else
4319 {
4320 bfd_vma addend = 0;
4321
4322 if (r_type == R_PPC_PLTREL24)
4323 {
4324 ppc_elf_tdata (abfd)->makes_plt_call = 1;
4325 if (bfd_link_pic (info))
4326 addend = rel->r_addend;
4327 }
4328 h->needs_plt = 1;
4329 if (!update_plt_info (abfd, &h->plt.plist, got2, addend))
4330 return FALSE;
4331 }
4332 break;
4333
4334 /* The following relocations don't need to propagate the
4335 relocation if linking a shared object since they are
4336 section relative. */
4337 case R_PPC_SECTOFF:
4338 case R_PPC_SECTOFF_LO:
4339 case R_PPC_SECTOFF_HI:
4340 case R_PPC_SECTOFF_HA:
4341 case R_PPC_DTPREL16:
4342 case R_PPC_DTPREL16_LO:
4343 case R_PPC_DTPREL16_HI:
4344 case R_PPC_DTPREL16_HA:
4345 case R_PPC_TOC16:
4346 break;
4347
4348 case R_PPC_REL16:
4349 case R_PPC_REL16_LO:
4350 case R_PPC_REL16_HI:
4351 case R_PPC_REL16_HA:
4352 case R_PPC_REL16DX_HA:
4353 ppc_elf_tdata (abfd)->has_rel16 = 1;
4354 break;
4355
4356 /* These are just markers. */
4357 case R_PPC_TLS:
4358 case R_PPC_EMB_MRKREF:
4359 case R_PPC_NONE:
4360 case R_PPC_max:
4361 case R_PPC_RELAX:
4362 case R_PPC_RELAX_PLT:
4363 case R_PPC_RELAX_PLTREL24:
4364 break;
4365
4366 /* These should only appear in dynamic objects. */
4367 case R_PPC_COPY:
4368 case R_PPC_GLOB_DAT:
4369 case R_PPC_JMP_SLOT:
4370 case R_PPC_RELATIVE:
4371 case R_PPC_IRELATIVE:
4372 break;
4373
4374 /* These aren't handled yet. We'll report an error later. */
4375 case R_PPC_ADDR30:
4376 case R_PPC_EMB_RELSEC16:
4377 case R_PPC_EMB_RELST_LO:
4378 case R_PPC_EMB_RELST_HI:
4379 case R_PPC_EMB_RELST_HA:
4380 case R_PPC_EMB_BIT_FLD:
4381 break;
4382
4383 /* This refers only to functions defined in the shared library. */
4384 case R_PPC_LOCAL24PC:
4385 if (h != NULL && h == htab->elf.hgot && htab->plt_type == PLT_UNSET)
4386 {
4387 htab->plt_type = PLT_OLD;
4388 htab->old_bfd = abfd;
4389 }
4390 if (h != NULL && h->type == STT_GNU_IFUNC)
4391 {
4392 if (bfd_link_pic (info))
4393 {
4394 info->callbacks->einfo
4395 (_("%P: %H: @local call to ifunc %s\n"),
4396 abfd, sec, rel->r_offset,
4397 h->root.root.string);
4398 bfd_set_error (bfd_error_bad_value);
4399 return FALSE;
4400 }
4401 h->needs_plt = 1;
4402 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
4403 return FALSE;
4404 }
4405 break;
4406
4407 /* This relocation describes the C++ object vtable hierarchy.
4408 Reconstruct it for later use during GC. */
4409 case R_PPC_GNU_VTINHERIT:
4410 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
4411 return FALSE;
4412 break;
4413
4414 /* This relocation describes which C++ vtable entries are actually
4415 used. Record for later use during GC. */
4416 case R_PPC_GNU_VTENTRY:
4417 BFD_ASSERT (h != NULL);
4418 if (h != NULL
4419 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
4420 return FALSE;
4421 break;
4422
4423 /* We shouldn't really be seeing these. */
4424 case R_PPC_TPREL32:
4425 case R_PPC_TPREL16:
4426 case R_PPC_TPREL16_LO:
4427 case R_PPC_TPREL16_HI:
4428 case R_PPC_TPREL16_HA:
4429 if (bfd_link_pic (info))
4430 info->flags |= DF_STATIC_TLS;
4431 goto dodyn;
4432
4433 /* Nor these. */
4434 case R_PPC_DTPMOD32:
4435 case R_PPC_DTPREL32:
4436 goto dodyn;
4437
4438 case R_PPC_REL32:
4439 if (h == NULL
4440 && got2 != NULL
4441 && (sec->flags & SEC_CODE) != 0
4442 && bfd_link_pic (info)
4443 && htab->plt_type == PLT_UNSET)
4444 {
4445 /* Old -fPIC gcc code has .long LCTOC1-LCFx just before
4446 the start of a function, which assembles to a REL32
4447 reference to .got2. If we detect one of these, then
4448 force the old PLT layout because the linker cannot
4449 reliably deduce the GOT pointer value needed for
4450 PLT call stubs. */
4451 asection *s;
4452 Elf_Internal_Sym *isym;
4453
4454 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
4455 abfd, r_symndx);
4456 if (isym == NULL)
4457 return FALSE;
4458
4459 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
4460 if (s == got2)
4461 {
4462 htab->plt_type = PLT_OLD;
4463 htab->old_bfd = abfd;
4464 }
4465 }
4466 if (h == NULL || h == htab->elf.hgot)
4467 break;
4468 /* fall through */
4469
4470 case R_PPC_ADDR32:
4471 case R_PPC_ADDR16:
4472 case R_PPC_ADDR16_LO:
4473 case R_PPC_ADDR16_HI:
4474 case R_PPC_ADDR16_HA:
4475 case R_PPC_UADDR32:
4476 case R_PPC_UADDR16:
4477 if (h != NULL && !bfd_link_pic (info))
4478 {
4479 /* We may need a plt entry if the symbol turns out to be
4480 a function defined in a dynamic object. */
4481 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
4482 return FALSE;
4483
4484 /* We may need a copy reloc too. */
4485 h->non_got_ref = 1;
4486 h->pointer_equality_needed = 1;
4487 if (r_type == R_PPC_ADDR16_HA)
4488 ppc_elf_hash_entry (h)->has_addr16_ha = 1;
4489 if (r_type == R_PPC_ADDR16_LO)
4490 ppc_elf_hash_entry (h)->has_addr16_lo = 1;
4491 }
4492 goto dodyn;
4493
4494 case R_PPC_REL24:
4495 case R_PPC_REL14:
4496 case R_PPC_REL14_BRTAKEN:
4497 case R_PPC_REL14_BRNTAKEN:
4498 if (h == NULL)
4499 break;
4500 if (h == htab->elf.hgot)
4501 {
4502 if (htab->plt_type == PLT_UNSET)
4503 {
4504 htab->plt_type = PLT_OLD;
4505 htab->old_bfd = abfd;
4506 }
4507 break;
4508 }
4509 /* fall through */
4510
4511 case R_PPC_ADDR24:
4512 case R_PPC_ADDR14:
4513 case R_PPC_ADDR14_BRTAKEN:
4514 case R_PPC_ADDR14_BRNTAKEN:
4515 if (h != NULL && !bfd_link_pic (info))
4516 {
4517 /* We may need a plt entry if the symbol turns out to be
4518 a function defined in a dynamic object. */
4519 h->needs_plt = 1;
4520 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
4521 return FALSE;
4522 break;
4523 }
4524
4525 dodyn:
4526 /* If we are creating a shared library, and this is a reloc
4527 against a global symbol, or a non PC relative reloc
4528 against a local symbol, then we need to copy the reloc
4529 into the shared library. However, if we are linking with
4530 -Bsymbolic, we do not need to copy a reloc against a
4531 global symbol which is defined in an object we are
4532 including in the link (i.e., DEF_REGULAR is set). At
4533 this point we have not seen all the input files, so it is
4534 possible that DEF_REGULAR is not set now but will be set
4535 later (it is never cleared). In case of a weak definition,
4536 DEF_REGULAR may be cleared later by a strong definition in
4537 a shared library. We account for that possibility below by
4538 storing information in the dyn_relocs field of the hash
4539 table entry. A similar situation occurs when creating
4540 shared libraries and symbol visibility changes render the
4541 symbol local.
4542
4543 If on the other hand, we are creating an executable, we
4544 may need to keep relocations for symbols satisfied by a
4545 dynamic library if we manage to avoid copy relocs for the
4546 symbol. */
4547 if ((bfd_link_pic (info)
4548 && (must_be_dyn_reloc (info, r_type)
4549 || (h != NULL
4550 && (!SYMBOLIC_BIND (info, h)
4551 || h->root.type == bfd_link_hash_defweak
4552 || !h->def_regular))))
4553 || (ELIMINATE_COPY_RELOCS
4554 && !bfd_link_pic (info)
4555 && h != NULL
4556 && (h->root.type == bfd_link_hash_defweak
4557 || !h->def_regular)))
4558 {
4559 #ifdef DEBUG
4560 fprintf (stderr,
4561 "ppc_elf_check_relocs needs to "
4562 "create relocation for %s\n",
4563 (h && h->root.root.string
4564 ? h->root.root.string : "<unknown>"));
4565 #endif
4566 if (sreloc == NULL)
4567 {
4568 if (htab->elf.dynobj == NULL)
4569 htab->elf.dynobj = abfd;
4570
4571 sreloc = _bfd_elf_make_dynamic_reloc_section
4572 (sec, htab->elf.dynobj, 2, abfd, /*rela?*/ TRUE);
4573
4574 if (sreloc == NULL)
4575 return FALSE;
4576 }
4577
4578 /* If this is a global symbol, we count the number of
4579 relocations we need for this symbol. */
4580 if (h != NULL)
4581 {
4582 struct elf_dyn_relocs *p;
4583 struct elf_dyn_relocs **rel_head;
4584
4585 rel_head = &ppc_elf_hash_entry (h)->dyn_relocs;
4586 p = *rel_head;
4587 if (p == NULL || p->sec != sec)
4588 {
4589 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
4590 if (p == NULL)
4591 return FALSE;
4592 p->next = *rel_head;
4593 *rel_head = p;
4594 p->sec = sec;
4595 p->count = 0;
4596 p->pc_count = 0;
4597 }
4598 p->count += 1;
4599 if (!must_be_dyn_reloc (info, r_type))
4600 p->pc_count += 1;
4601 }
4602 else
4603 {
4604 /* Track dynamic relocs needed for local syms too.
4605 We really need local syms available to do this
4606 easily. Oh well. */
4607 struct ppc_dyn_relocs *p;
4608 struct ppc_dyn_relocs **rel_head;
4609 bfd_boolean is_ifunc;
4610 asection *s;
4611 void *vpp;
4612 Elf_Internal_Sym *isym;
4613
4614 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
4615 abfd, r_symndx);
4616 if (isym == NULL)
4617 return FALSE;
4618
4619 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
4620 if (s == NULL)
4621 s = sec;
4622
4623 vpp = &elf_section_data (s)->local_dynrel;
4624 rel_head = (struct ppc_dyn_relocs **) vpp;
4625 is_ifunc = ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC;
4626 p = *rel_head;
4627 if (p != NULL && p->sec == sec && p->ifunc != is_ifunc)
4628 p = p->next;
4629 if (p == NULL || p->sec != sec || p->ifunc != is_ifunc)
4630 {
4631 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
4632 if (p == NULL)
4633 return FALSE;
4634 p->next = *rel_head;
4635 *rel_head = p;
4636 p->sec = sec;
4637 p->ifunc = is_ifunc;
4638 p->count = 0;
4639 }
4640 p->count += 1;
4641 }
4642 }
4643
4644 break;
4645 }
4646 }
4647
4648 return TRUE;
4649 }
4650 \f
4651
4652 /* Merge object attributes from IBFD into OBFD. Raise an error if
4653 there are conflicting attributes. */
4654 static bfd_boolean
4655 ppc_elf_merge_obj_attributes (bfd *ibfd, bfd *obfd)
4656 {
4657 obj_attribute *in_attr, *in_attrs;
4658 obj_attribute *out_attr, *out_attrs;
4659
4660 if (!elf_known_obj_attributes_proc (obfd)[0].i)
4661 {
4662 /* This is the first object. Copy the attributes. */
4663 _bfd_elf_copy_obj_attributes (ibfd, obfd);
4664
4665 /* Use the Tag_null value to indicate the attributes have been
4666 initialized. */
4667 elf_known_obj_attributes_proc (obfd)[0].i = 1;
4668
4669 return TRUE;
4670 }
4671
4672 in_attrs = elf_known_obj_attributes (ibfd)[OBJ_ATTR_GNU];
4673 out_attrs = elf_known_obj_attributes (obfd)[OBJ_ATTR_GNU];
4674
4675 /* Check for conflicting Tag_GNU_Power_ABI_FP attributes and merge
4676 non-conflicting ones. */
4677 in_attr = &in_attrs[Tag_GNU_Power_ABI_FP];
4678 out_attr = &out_attrs[Tag_GNU_Power_ABI_FP];
4679 if (in_attr->i != out_attr->i)
4680 {
4681 out_attr->type = 1;
4682 if (out_attr->i == 0)
4683 out_attr->i = in_attr->i;
4684 else if (in_attr->i == 0)
4685 ;
4686 else if (out_attr->i == 1 && in_attr->i == 2)
4687 _bfd_error_handler
4688 (_("Warning: %B uses hard float, %B uses soft float"), obfd, ibfd);
4689 else if (out_attr->i == 1 && in_attr->i == 3)
4690 _bfd_error_handler
4691 (_("Warning: %B uses double-precision hard float, %B uses single-precision hard float"),
4692 obfd, ibfd);
4693 else if (out_attr->i == 3 && in_attr->i == 1)
4694 _bfd_error_handler
4695 (_("Warning: %B uses double-precision hard float, %B uses single-precision hard float"),
4696 ibfd, obfd);
4697 else if (out_attr->i == 3 && in_attr->i == 2)
4698 _bfd_error_handler
4699 (_("Warning: %B uses soft float, %B uses single-precision hard float"),
4700 ibfd, obfd);
4701 else if (out_attr->i == 2 && (in_attr->i == 1 || in_attr->i == 3))
4702 _bfd_error_handler
4703 (_("Warning: %B uses hard float, %B uses soft float"), ibfd, obfd);
4704 else if (in_attr->i > 3)
4705 _bfd_error_handler
4706 (_("Warning: %B uses unknown floating point ABI %d"), ibfd,
4707 in_attr->i);
4708 else
4709 _bfd_error_handler
4710 (_("Warning: %B uses unknown floating point ABI %d"), obfd,
4711 out_attr->i);
4712 }
4713
4714 /* Check for conflicting Tag_GNU_Power_ABI_Vector attributes and
4715 merge non-conflicting ones. */
4716 in_attr = &in_attrs[Tag_GNU_Power_ABI_Vector];
4717 out_attr = &out_attrs[Tag_GNU_Power_ABI_Vector];
4718 if (in_attr->i != out_attr->i)
4719 {
4720 const char *in_abi = NULL, *out_abi = NULL;
4721
4722 switch (in_attr->i)
4723 {
4724 case 1: in_abi = "generic"; break;
4725 case 2: in_abi = "AltiVec"; break;
4726 case 3: in_abi = "SPE"; break;
4727 }
4728
4729 switch (out_attr->i)
4730 {
4731 case 1: out_abi = "generic"; break;
4732 case 2: out_abi = "AltiVec"; break;
4733 case 3: out_abi = "SPE"; break;
4734 }
4735
4736 out_attr->type = 1;
4737 if (out_attr->i == 0)
4738 out_attr->i = in_attr->i;
4739 else if (in_attr->i == 0)
4740 ;
4741 /* For now, allow generic to transition to AltiVec or SPE
4742 without a warning. If GCC marked files with their stack
4743 alignment and used don't-care markings for files which are
4744 not affected by the vector ABI, we could warn about this
4745 case too. */
4746 else if (out_attr->i == 1)
4747 out_attr->i = in_attr->i;
4748 else if (in_attr->i == 1)
4749 ;
4750 else if (in_abi == NULL)
4751 _bfd_error_handler
4752 (_("Warning: %B uses unknown vector ABI %d"), ibfd,
4753 in_attr->i);
4754 else if (out_abi == NULL)
4755 _bfd_error_handler
4756 (_("Warning: %B uses unknown vector ABI %d"), obfd,
4757 in_attr->i);
4758 else
4759 _bfd_error_handler
4760 (_("Warning: %B uses vector ABI \"%s\", %B uses \"%s\""),
4761 ibfd, obfd, in_abi, out_abi);
4762 }
4763
4764 /* Check for conflicting Tag_GNU_Power_ABI_Struct_Return attributes
4765 and merge non-conflicting ones. */
4766 in_attr = &in_attrs[Tag_GNU_Power_ABI_Struct_Return];
4767 out_attr = &out_attrs[Tag_GNU_Power_ABI_Struct_Return];
4768 if (in_attr->i != out_attr->i)
4769 {
4770 out_attr->type = 1;
4771 if (out_attr->i == 0)
4772 out_attr->i = in_attr->i;
4773 else if (in_attr->i == 0)
4774 ;
4775 else if (out_attr->i == 1 && in_attr->i == 2)
4776 _bfd_error_handler
4777 (_("Warning: %B uses r3/r4 for small structure returns, %B uses memory"), obfd, ibfd);
4778 else if (out_attr->i == 2 && in_attr->i == 1)
4779 _bfd_error_handler
4780 (_("Warning: %B uses r3/r4 for small structure returns, %B uses memory"), ibfd, obfd);
4781 else if (in_attr->i > 2)
4782 _bfd_error_handler
4783 (_("Warning: %B uses unknown small structure return convention %d"), ibfd,
4784 in_attr->i);
4785 else
4786 _bfd_error_handler
4787 (_("Warning: %B uses unknown small structure return convention %d"), obfd,
4788 out_attr->i);
4789 }
4790
4791 /* Merge Tag_compatibility attributes and any common GNU ones. */
4792 _bfd_elf_merge_object_attributes (ibfd, obfd);
4793
4794 return TRUE;
4795 }
4796
4797 /* Merge backend specific data from an object file to the output
4798 object file when linking. */
4799
4800 static bfd_boolean
4801 ppc_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
4802 {
4803 flagword old_flags;
4804 flagword new_flags;
4805 bfd_boolean error;
4806
4807 if (!is_ppc_elf (ibfd) || !is_ppc_elf (obfd))
4808 return TRUE;
4809
4810 /* Check if we have the same endianness. */
4811 if (! _bfd_generic_verify_endian_match (ibfd, obfd))
4812 return FALSE;
4813
4814 if (!ppc_elf_merge_obj_attributes (ibfd, obfd))
4815 return FALSE;
4816
4817 new_flags = elf_elfheader (ibfd)->e_flags;
4818 old_flags = elf_elfheader (obfd)->e_flags;
4819 if (!elf_flags_init (obfd))
4820 {
4821 /* First call, no flags set. */
4822 elf_flags_init (obfd) = TRUE;
4823 elf_elfheader (obfd)->e_flags = new_flags;
4824 }
4825
4826 /* Compatible flags are ok. */
4827 else if (new_flags == old_flags)
4828 ;
4829
4830 /* Incompatible flags. */
4831 else
4832 {
4833 /* Warn about -mrelocatable mismatch. Allow -mrelocatable-lib
4834 to be linked with either. */
4835 error = FALSE;
4836 if ((new_flags & EF_PPC_RELOCATABLE) != 0
4837 && (old_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0)
4838 {
4839 error = TRUE;
4840 (*_bfd_error_handler)
4841 (_("%B: compiled with -mrelocatable and linked with "
4842 "modules compiled normally"), ibfd);
4843 }
4844 else if ((new_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0
4845 && (old_flags & EF_PPC_RELOCATABLE) != 0)
4846 {
4847 error = TRUE;
4848 (*_bfd_error_handler)
4849 (_("%B: compiled normally and linked with "
4850 "modules compiled with -mrelocatable"), ibfd);
4851 }
4852
4853 /* The output is -mrelocatable-lib iff both the input files are. */
4854 if (! (new_flags & EF_PPC_RELOCATABLE_LIB))
4855 elf_elfheader (obfd)->e_flags &= ~EF_PPC_RELOCATABLE_LIB;
4856
4857 /* The output is -mrelocatable iff it can't be -mrelocatable-lib,
4858 but each input file is either -mrelocatable or -mrelocatable-lib. */
4859 if (! (elf_elfheader (obfd)->e_flags & EF_PPC_RELOCATABLE_LIB)
4860 && (new_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE))
4861 && (old_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE)))
4862 elf_elfheader (obfd)->e_flags |= EF_PPC_RELOCATABLE;
4863
4864 /* Do not warn about eabi vs. V.4 mismatch, just or in the bit if
4865 any module uses it. */
4866 elf_elfheader (obfd)->e_flags |= (new_flags & EF_PPC_EMB);
4867
4868 new_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
4869 old_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
4870
4871 /* Warn about any other mismatches. */
4872 if (new_flags != old_flags)
4873 {
4874 error = TRUE;
4875 (*_bfd_error_handler)
4876 (_("%B: uses different e_flags (0x%lx) fields "
4877 "than previous modules (0x%lx)"),
4878 ibfd, (long) new_flags, (long) old_flags);
4879 }
4880
4881 if (error)
4882 {
4883 bfd_set_error (bfd_error_bad_value);
4884 return FALSE;
4885 }
4886 }
4887
4888 return TRUE;
4889 }
4890
4891 static void
4892 ppc_elf_vle_split16 (bfd *output_bfd, bfd_byte *loc,
4893 bfd_vma value,
4894 split16_format_type split16_format)
4895
4896 {
4897 unsigned int insn, top5;
4898
4899 insn = bfd_get_32 (output_bfd, loc);
4900 top5 = value & 0xf800;
4901 top5 = top5 << (split16_format == split16a_type ? 9 : 5);
4902 insn |= top5;
4903 insn |= value & 0x7ff;
4904 bfd_put_32 (output_bfd, insn, loc);
4905 }
4906
4907 \f
4908 /* Choose which PLT scheme to use, and set .plt flags appropriately.
4909 Returns -1 on error, 0 for old PLT, 1 for new PLT. */
4910 int
4911 ppc_elf_select_plt_layout (bfd *output_bfd ATTRIBUTE_UNUSED,
4912 struct bfd_link_info *info)
4913 {
4914 struct ppc_elf_link_hash_table *htab;
4915 flagword flags;
4916
4917 htab = ppc_elf_hash_table (info);
4918
4919 if (htab->plt_type == PLT_UNSET)
4920 {
4921 struct elf_link_hash_entry *h;
4922
4923 if (htab->params->plt_style == PLT_OLD)
4924 htab->plt_type = PLT_OLD;
4925 else if (bfd_link_pic (info)
4926 && htab->elf.dynamic_sections_created
4927 && (h = elf_link_hash_lookup (&htab->elf, "_mcount",
4928 FALSE, FALSE, TRUE)) != NULL
4929 && (h->type == STT_FUNC
4930 || h->needs_plt)
4931 && h->ref_regular
4932 && !(SYMBOL_CALLS_LOCAL (info, h)
4933 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
4934 && h->root.type == bfd_link_hash_undefweak)))
4935 {
4936 /* Profiling of shared libs (and pies) is not supported with
4937 secure plt, because ppc32 does profiling before a
4938 function prologue and a secure plt pic call stubs needs
4939 r30 to be set up. */
4940 htab->plt_type = PLT_OLD;
4941 }
4942 else
4943 {
4944 bfd *ibfd;
4945 enum ppc_elf_plt_type plt_type = htab->params->plt_style;
4946
4947 /* Look through the reloc flags left by ppc_elf_check_relocs.
4948 Use the old style bss plt if a file makes plt calls
4949 without using the new relocs, and if ld isn't given
4950 --secure-plt and we never see REL16 relocs. */
4951 if (plt_type == PLT_UNSET)
4952 plt_type = PLT_OLD;
4953 for (ibfd = info->input_bfds; ibfd; ibfd = ibfd->link.next)
4954 if (is_ppc_elf (ibfd))
4955 {
4956 if (ppc_elf_tdata (ibfd)->has_rel16)
4957 plt_type = PLT_NEW;
4958 else if (ppc_elf_tdata (ibfd)->makes_plt_call)
4959 {
4960 plt_type = PLT_OLD;
4961 htab->old_bfd = ibfd;
4962 break;
4963 }
4964 }
4965 htab->plt_type = plt_type;
4966 }
4967 }
4968 if (htab->plt_type == PLT_OLD && htab->params->plt_style == PLT_NEW)
4969 {
4970 if (htab->old_bfd != NULL)
4971 info->callbacks->einfo (_("%P: bss-plt forced due to %B\n"),
4972 htab->old_bfd);
4973 else
4974 info->callbacks->einfo (_("%P: bss-plt forced by profiling\n"));
4975 }
4976
4977 BFD_ASSERT (htab->plt_type != PLT_VXWORKS);
4978
4979 if (htab->plt_type == PLT_NEW)
4980 {
4981 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
4982 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4983
4984 /* The new PLT is a loaded section. */
4985 if (htab->plt != NULL
4986 && !bfd_set_section_flags (htab->elf.dynobj, htab->plt, flags))
4987 return -1;
4988
4989 /* The new GOT is not executable. */
4990 if (htab->got != NULL
4991 && !bfd_set_section_flags (htab->elf.dynobj, htab->got, flags))
4992 return -1;
4993 }
4994 else
4995 {
4996 /* Stop an unused .glink section from affecting .text alignment. */
4997 if (htab->glink != NULL
4998 && !bfd_set_section_alignment (htab->elf.dynobj, htab->glink, 0))
4999 return -1;
5000 }
5001 return htab->plt_type == PLT_NEW;
5002 }
5003 \f
5004 /* Return the section that should be marked against GC for a given
5005 relocation. */
5006
5007 static asection *
5008 ppc_elf_gc_mark_hook (asection *sec,
5009 struct bfd_link_info *info,
5010 Elf_Internal_Rela *rel,
5011 struct elf_link_hash_entry *h,
5012 Elf_Internal_Sym *sym)
5013 {
5014 if (h != NULL)
5015 switch (ELF32_R_TYPE (rel->r_info))
5016 {
5017 case R_PPC_GNU_VTINHERIT:
5018 case R_PPC_GNU_VTENTRY:
5019 return NULL;
5020 }
5021
5022 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
5023 }
5024
5025 /* Update the got, plt and dynamic reloc reference counts for the
5026 section being removed. */
5027
5028 static bfd_boolean
5029 ppc_elf_gc_sweep_hook (bfd *abfd,
5030 struct bfd_link_info *info,
5031 asection *sec,
5032 const Elf_Internal_Rela *relocs)
5033 {
5034 struct ppc_elf_link_hash_table *htab;
5035 Elf_Internal_Shdr *symtab_hdr;
5036 struct elf_link_hash_entry **sym_hashes;
5037 bfd_signed_vma *local_got_refcounts;
5038 const Elf_Internal_Rela *rel, *relend;
5039 asection *got2;
5040
5041 if (bfd_link_relocatable (info))
5042 return TRUE;
5043
5044 if ((sec->flags & SEC_ALLOC) == 0)
5045 return TRUE;
5046
5047 elf_section_data (sec)->local_dynrel = NULL;
5048
5049 htab = ppc_elf_hash_table (info);
5050 symtab_hdr = &elf_symtab_hdr (abfd);
5051 sym_hashes = elf_sym_hashes (abfd);
5052 local_got_refcounts = elf_local_got_refcounts (abfd);
5053 got2 = bfd_get_section_by_name (abfd, ".got2");
5054
5055 relend = relocs + sec->reloc_count;
5056 for (rel = relocs; rel < relend; rel++)
5057 {
5058 unsigned long r_symndx;
5059 enum elf_ppc_reloc_type r_type;
5060 struct elf_link_hash_entry *h = NULL;
5061
5062 r_symndx = ELF32_R_SYM (rel->r_info);
5063 if (r_symndx >= symtab_hdr->sh_info)
5064 {
5065 struct elf_dyn_relocs **pp, *p;
5066 struct ppc_elf_link_hash_entry *eh;
5067
5068 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5069 while (h->root.type == bfd_link_hash_indirect
5070 || h->root.type == bfd_link_hash_warning)
5071 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5072 eh = (struct ppc_elf_link_hash_entry *) h;
5073
5074 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
5075 if (p->sec == sec)
5076 {
5077 /* Everything must go for SEC. */
5078 *pp = p->next;
5079 break;
5080 }
5081 }
5082
5083 r_type = ELF32_R_TYPE (rel->r_info);
5084 if (!htab->is_vxworks
5085 && h == NULL
5086 && local_got_refcounts != NULL
5087 && (!bfd_link_pic (info)
5088 || is_branch_reloc (r_type)))
5089 {
5090 struct plt_entry **local_plt = (struct plt_entry **)
5091 (local_got_refcounts + symtab_hdr->sh_info);
5092 char *local_got_tls_masks = (char *)
5093 (local_plt + symtab_hdr->sh_info);
5094 if ((local_got_tls_masks[r_symndx] & PLT_IFUNC) != 0)
5095 {
5096 struct plt_entry **ifunc = local_plt + r_symndx;
5097 bfd_vma addend = 0;
5098 struct plt_entry *ent;
5099
5100 if (r_type == R_PPC_PLTREL24 && bfd_link_pic (info))
5101 addend = rel->r_addend;
5102 ent = find_plt_ent (ifunc, got2, addend);
5103 if (ent->plt.refcount > 0)
5104 ent->plt.refcount -= 1;
5105 continue;
5106 }
5107 }
5108
5109 switch (r_type)
5110 {
5111 case R_PPC_GOT_TLSLD16:
5112 case R_PPC_GOT_TLSLD16_LO:
5113 case R_PPC_GOT_TLSLD16_HI:
5114 case R_PPC_GOT_TLSLD16_HA:
5115 case R_PPC_GOT_TLSGD16:
5116 case R_PPC_GOT_TLSGD16_LO:
5117 case R_PPC_GOT_TLSGD16_HI:
5118 case R_PPC_GOT_TLSGD16_HA:
5119 case R_PPC_GOT_TPREL16:
5120 case R_PPC_GOT_TPREL16_LO:
5121 case R_PPC_GOT_TPREL16_HI:
5122 case R_PPC_GOT_TPREL16_HA:
5123 case R_PPC_GOT_DTPREL16:
5124 case R_PPC_GOT_DTPREL16_LO:
5125 case R_PPC_GOT_DTPREL16_HI:
5126 case R_PPC_GOT_DTPREL16_HA:
5127 case R_PPC_GOT16:
5128 case R_PPC_GOT16_LO:
5129 case R_PPC_GOT16_HI:
5130 case R_PPC_GOT16_HA:
5131 if (h != NULL)
5132 {
5133 if (h->got.refcount > 0)
5134 h->got.refcount--;
5135 if (!bfd_link_pic (info))
5136 {
5137 struct plt_entry *ent;
5138
5139 ent = find_plt_ent (&h->plt.plist, NULL, 0);
5140 if (ent != NULL && ent->plt.refcount > 0)
5141 ent->plt.refcount -= 1;
5142 }
5143 }
5144 else if (local_got_refcounts != NULL)
5145 {
5146 if (local_got_refcounts[r_symndx] > 0)
5147 local_got_refcounts[r_symndx]--;
5148 }
5149 break;
5150
5151 case R_PPC_REL24:
5152 case R_PPC_REL14:
5153 case R_PPC_REL14_BRTAKEN:
5154 case R_PPC_REL14_BRNTAKEN:
5155 case R_PPC_REL32:
5156 if (h == NULL || h == htab->elf.hgot)
5157 break;
5158 /* Fall thru */
5159
5160 case R_PPC_ADDR32:
5161 case R_PPC_ADDR24:
5162 case R_PPC_ADDR16:
5163 case R_PPC_ADDR16_LO:
5164 case R_PPC_ADDR16_HI:
5165 case R_PPC_ADDR16_HA:
5166 case R_PPC_ADDR14:
5167 case R_PPC_ADDR14_BRTAKEN:
5168 case R_PPC_ADDR14_BRNTAKEN:
5169 case R_PPC_UADDR32:
5170 case R_PPC_UADDR16:
5171 if (bfd_link_pic (info))
5172 break;
5173
5174 case R_PPC_PLT32:
5175 case R_PPC_PLTREL24:
5176 case R_PPC_PLTREL32:
5177 case R_PPC_PLT16_LO:
5178 case R_PPC_PLT16_HI:
5179 case R_PPC_PLT16_HA:
5180 if (h != NULL)
5181 {
5182 bfd_vma addend = 0;
5183 struct plt_entry *ent;
5184
5185 if (r_type == R_PPC_PLTREL24 && bfd_link_pic (info))
5186 addend = rel->r_addend;
5187 ent = find_plt_ent (&h->plt.plist, got2, addend);
5188 if (ent != NULL && ent->plt.refcount > 0)
5189 ent->plt.refcount -= 1;
5190 }
5191 break;
5192
5193 default:
5194 break;
5195 }
5196 }
5197 return TRUE;
5198 }
5199 \f
5200 /* Set plt output section type, htab->tls_get_addr, and call the
5201 generic ELF tls_setup function. */
5202
5203 asection *
5204 ppc_elf_tls_setup (bfd *obfd, struct bfd_link_info *info)
5205 {
5206 struct ppc_elf_link_hash_table *htab;
5207
5208 htab = ppc_elf_hash_table (info);
5209 htab->tls_get_addr = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
5210 FALSE, FALSE, TRUE);
5211 if (htab->plt_type != PLT_NEW)
5212 htab->params->no_tls_get_addr_opt = TRUE;
5213
5214 if (!htab->params->no_tls_get_addr_opt)
5215 {
5216 struct elf_link_hash_entry *opt, *tga;
5217 opt = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_opt",
5218 FALSE, FALSE, TRUE);
5219 if (opt != NULL
5220 && (opt->root.type == bfd_link_hash_defined
5221 || opt->root.type == bfd_link_hash_defweak))
5222 {
5223 /* If glibc supports an optimized __tls_get_addr call stub,
5224 signalled by the presence of __tls_get_addr_opt, and we'll
5225 be calling __tls_get_addr via a plt call stub, then
5226 make __tls_get_addr point to __tls_get_addr_opt. */
5227 tga = htab->tls_get_addr;
5228 if (htab->elf.dynamic_sections_created
5229 && tga != NULL
5230 && (tga->type == STT_FUNC
5231 || tga->needs_plt)
5232 && !(SYMBOL_CALLS_LOCAL (info, tga)
5233 || (ELF_ST_VISIBILITY (tga->other) != STV_DEFAULT
5234 && tga->root.type == bfd_link_hash_undefweak)))
5235 {
5236 struct plt_entry *ent;
5237 for (ent = tga->plt.plist; ent != NULL; ent = ent->next)
5238 if (ent->plt.refcount > 0)
5239 break;
5240 if (ent != NULL)
5241 {
5242 tga->root.type = bfd_link_hash_indirect;
5243 tga->root.u.i.link = &opt->root;
5244 ppc_elf_copy_indirect_symbol (info, opt, tga);
5245 opt->forced_local = 0;
5246 if (opt->dynindx != -1)
5247 {
5248 /* Use __tls_get_addr_opt in dynamic relocations. */
5249 opt->dynindx = -1;
5250 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
5251 opt->dynstr_index);
5252 if (!bfd_elf_link_record_dynamic_symbol (info, opt))
5253 return FALSE;
5254 }
5255 htab->tls_get_addr = opt;
5256 }
5257 }
5258 }
5259 else
5260 htab->params->no_tls_get_addr_opt = TRUE;
5261 }
5262 if (htab->plt_type == PLT_NEW
5263 && htab->plt != NULL
5264 && htab->plt->output_section != NULL)
5265 {
5266 elf_section_type (htab->plt->output_section) = SHT_PROGBITS;
5267 elf_section_flags (htab->plt->output_section) = SHF_ALLOC + SHF_WRITE;
5268 }
5269
5270 return _bfd_elf_tls_setup (obfd, info);
5271 }
5272
5273 /* Return TRUE iff REL is a branch reloc with a global symbol matching
5274 HASH. */
5275
5276 static bfd_boolean
5277 branch_reloc_hash_match (const bfd *ibfd,
5278 const Elf_Internal_Rela *rel,
5279 const struct elf_link_hash_entry *hash)
5280 {
5281 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
5282 enum elf_ppc_reloc_type r_type = ELF32_R_TYPE (rel->r_info);
5283 unsigned int r_symndx = ELF32_R_SYM (rel->r_info);
5284
5285 if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type))
5286 {
5287 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
5288 struct elf_link_hash_entry *h;
5289
5290 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5291 while (h->root.type == bfd_link_hash_indirect
5292 || h->root.type == bfd_link_hash_warning)
5293 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5294 if (h == hash)
5295 return TRUE;
5296 }
5297 return FALSE;
5298 }
5299
5300 /* Run through all the TLS relocs looking for optimization
5301 opportunities. */
5302
5303 bfd_boolean
5304 ppc_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED,
5305 struct bfd_link_info *info)
5306 {
5307 bfd *ibfd;
5308 asection *sec;
5309 struct ppc_elf_link_hash_table *htab;
5310 int pass;
5311
5312 if (!bfd_link_executable (info))
5313 return TRUE;
5314
5315 htab = ppc_elf_hash_table (info);
5316 if (htab == NULL)
5317 return FALSE;
5318
5319 /* Make two passes through the relocs. First time check that tls
5320 relocs involved in setting up a tls_get_addr call are indeed
5321 followed by such a call. If they are not, don't do any tls
5322 optimization. On the second pass twiddle tls_mask flags to
5323 notify relocate_section that optimization can be done, and
5324 adjust got and plt refcounts. */
5325 for (pass = 0; pass < 2; ++pass)
5326 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
5327 {
5328 Elf_Internal_Sym *locsyms = NULL;
5329 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
5330 asection *got2 = bfd_get_section_by_name (ibfd, ".got2");
5331
5332 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
5333 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
5334 {
5335 Elf_Internal_Rela *relstart, *rel, *relend;
5336 int expecting_tls_get_addr = 0;
5337
5338 /* Read the relocations. */
5339 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
5340 info->keep_memory);
5341 if (relstart == NULL)
5342 return FALSE;
5343
5344 relend = relstart + sec->reloc_count;
5345 for (rel = relstart; rel < relend; rel++)
5346 {
5347 enum elf_ppc_reloc_type r_type;
5348 unsigned long r_symndx;
5349 struct elf_link_hash_entry *h = NULL;
5350 char *tls_mask;
5351 char tls_set, tls_clear;
5352 bfd_boolean is_local;
5353 bfd_signed_vma *got_count;
5354
5355 r_symndx = ELF32_R_SYM (rel->r_info);
5356 if (r_symndx >= symtab_hdr->sh_info)
5357 {
5358 struct elf_link_hash_entry **sym_hashes;
5359
5360 sym_hashes = elf_sym_hashes (ibfd);
5361 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5362 while (h->root.type == bfd_link_hash_indirect
5363 || h->root.type == bfd_link_hash_warning)
5364 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5365 }
5366
5367 is_local = FALSE;
5368 if (h == NULL
5369 || !h->def_dynamic)
5370 is_local = TRUE;
5371
5372 r_type = ELF32_R_TYPE (rel->r_info);
5373 /* If this section has old-style __tls_get_addr calls
5374 without marker relocs, then check that each
5375 __tls_get_addr call reloc is preceded by a reloc
5376 that conceivably belongs to the __tls_get_addr arg
5377 setup insn. If we don't find matching arg setup
5378 relocs, don't do any tls optimization. */
5379 if (pass == 0
5380 && sec->has_tls_get_addr_call
5381 && h != NULL
5382 && h == htab->tls_get_addr
5383 && !expecting_tls_get_addr
5384 && is_branch_reloc (r_type))
5385 {
5386 info->callbacks->minfo ("%H __tls_get_addr lost arg, "
5387 "TLS optimization disabled\n",
5388 ibfd, sec, rel->r_offset);
5389 if (elf_section_data (sec)->relocs != relstart)
5390 free (relstart);
5391 return TRUE;
5392 }
5393
5394 expecting_tls_get_addr = 0;
5395 switch (r_type)
5396 {
5397 case R_PPC_GOT_TLSLD16:
5398 case R_PPC_GOT_TLSLD16_LO:
5399 expecting_tls_get_addr = 1;
5400 /* Fall thru */
5401
5402 case R_PPC_GOT_TLSLD16_HI:
5403 case R_PPC_GOT_TLSLD16_HA:
5404 /* These relocs should never be against a symbol
5405 defined in a shared lib. Leave them alone if
5406 that turns out to be the case. */
5407 if (!is_local)
5408 continue;
5409
5410 /* LD -> LE */
5411 tls_set = 0;
5412 tls_clear = TLS_LD;
5413 break;
5414
5415 case R_PPC_GOT_TLSGD16:
5416 case R_PPC_GOT_TLSGD16_LO:
5417 expecting_tls_get_addr = 1;
5418 /* Fall thru */
5419
5420 case R_PPC_GOT_TLSGD16_HI:
5421 case R_PPC_GOT_TLSGD16_HA:
5422 if (is_local)
5423 /* GD -> LE */
5424 tls_set = 0;
5425 else
5426 /* GD -> IE */
5427 tls_set = TLS_TLS | TLS_TPRELGD;
5428 tls_clear = TLS_GD;
5429 break;
5430
5431 case R_PPC_GOT_TPREL16:
5432 case R_PPC_GOT_TPREL16_LO:
5433 case R_PPC_GOT_TPREL16_HI:
5434 case R_PPC_GOT_TPREL16_HA:
5435 if (is_local)
5436 {
5437 /* IE -> LE */
5438 tls_set = 0;
5439 tls_clear = TLS_TPREL;
5440 break;
5441 }
5442 else
5443 continue;
5444
5445 case R_PPC_TLSGD:
5446 case R_PPC_TLSLD:
5447 expecting_tls_get_addr = 2;
5448 tls_set = 0;
5449 tls_clear = 0;
5450 break;
5451
5452 default:
5453 continue;
5454 }
5455
5456 if (pass == 0)
5457 {
5458 if (!expecting_tls_get_addr
5459 || (expecting_tls_get_addr == 1
5460 && !sec->has_tls_get_addr_call))
5461 continue;
5462
5463 if (rel + 1 < relend
5464 && branch_reloc_hash_match (ibfd, rel + 1,
5465 htab->tls_get_addr))
5466 continue;
5467
5468 /* Uh oh, we didn't find the expected call. We
5469 could just mark this symbol to exclude it
5470 from tls optimization but it's safer to skip
5471 the entire optimization. */
5472 info->callbacks->minfo (_("%H arg lost __tls_get_addr, "
5473 "TLS optimization disabled\n"),
5474 ibfd, sec, rel->r_offset);
5475 if (elf_section_data (sec)->relocs != relstart)
5476 free (relstart);
5477 return TRUE;
5478 }
5479
5480 if (expecting_tls_get_addr)
5481 {
5482 struct plt_entry *ent;
5483 bfd_vma addend = 0;
5484
5485 if (bfd_link_pic (info)
5486 && ELF32_R_TYPE (rel[1].r_info) == R_PPC_PLTREL24)
5487 addend = rel[1].r_addend;
5488 ent = find_plt_ent (&htab->tls_get_addr->plt.plist,
5489 got2, addend);
5490 if (ent != NULL && ent->plt.refcount > 0)
5491 ent->plt.refcount -= 1;
5492
5493 if (expecting_tls_get_addr == 2)
5494 continue;
5495 }
5496
5497 if (h != NULL)
5498 {
5499 tls_mask = &ppc_elf_hash_entry (h)->tls_mask;
5500 got_count = &h->got.refcount;
5501 }
5502 else
5503 {
5504 bfd_signed_vma *lgot_refs;
5505 struct plt_entry **local_plt;
5506 char *lgot_masks;
5507
5508 if (locsyms == NULL)
5509 {
5510 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
5511 if (locsyms == NULL)
5512 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
5513 symtab_hdr->sh_info,
5514 0, NULL, NULL, NULL);
5515 if (locsyms == NULL)
5516 {
5517 if (elf_section_data (sec)->relocs != relstart)
5518 free (relstart);
5519 return FALSE;
5520 }
5521 }
5522 lgot_refs = elf_local_got_refcounts (ibfd);
5523 if (lgot_refs == NULL)
5524 abort ();
5525 local_plt = (struct plt_entry **)
5526 (lgot_refs + symtab_hdr->sh_info);
5527 lgot_masks = (char *) (local_plt + symtab_hdr->sh_info);
5528 tls_mask = &lgot_masks[r_symndx];
5529 got_count = &lgot_refs[r_symndx];
5530 }
5531
5532 if (tls_set == 0)
5533 {
5534 /* We managed to get rid of a got entry. */
5535 if (*got_count > 0)
5536 *got_count -= 1;
5537 }
5538
5539 *tls_mask |= tls_set;
5540 *tls_mask &= ~tls_clear;
5541 }
5542
5543 if (elf_section_data (sec)->relocs != relstart)
5544 free (relstart);
5545 }
5546
5547 if (locsyms != NULL
5548 && (symtab_hdr->contents != (unsigned char *) locsyms))
5549 {
5550 if (!info->keep_memory)
5551 free (locsyms);
5552 else
5553 symtab_hdr->contents = (unsigned char *) locsyms;
5554 }
5555 }
5556 return TRUE;
5557 }
5558 \f
5559 /* Return true if we have dynamic relocs that apply to read-only sections. */
5560
5561 static bfd_boolean
5562 readonly_dynrelocs (struct elf_link_hash_entry *h)
5563 {
5564 struct elf_dyn_relocs *p;
5565
5566 for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next)
5567 {
5568 asection *s = p->sec->output_section;
5569
5570 if (s != NULL
5571 && ((s->flags & (SEC_READONLY | SEC_ALLOC))
5572 == (SEC_READONLY | SEC_ALLOC)))
5573 return TRUE;
5574 }
5575 return FALSE;
5576 }
5577
5578 /* Adjust a symbol defined by a dynamic object and referenced by a
5579 regular object. The current definition is in some section of the
5580 dynamic object, but we're not including those sections. We have to
5581 change the definition to something the rest of the link can
5582 understand. */
5583
5584 static bfd_boolean
5585 ppc_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
5586 struct elf_link_hash_entry *h)
5587 {
5588 struct ppc_elf_link_hash_table *htab;
5589 asection *s;
5590
5591 #ifdef DEBUG
5592 fprintf (stderr, "ppc_elf_adjust_dynamic_symbol called for %s\n",
5593 h->root.root.string);
5594 #endif
5595
5596 /* Make sure we know what is going on here. */
5597 htab = ppc_elf_hash_table (info);
5598 BFD_ASSERT (htab->elf.dynobj != NULL
5599 && (h->needs_plt
5600 || h->type == STT_GNU_IFUNC
5601 || h->u.weakdef != NULL
5602 || (h->def_dynamic
5603 && h->ref_regular
5604 && !h->def_regular)));
5605
5606 /* Deal with function syms. */
5607 if (h->type == STT_FUNC
5608 || h->type == STT_GNU_IFUNC
5609 || h->needs_plt)
5610 {
5611 /* Clear procedure linkage table information for any symbol that
5612 won't need a .plt entry. */
5613 struct plt_entry *ent;
5614 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
5615 if (ent->plt.refcount > 0)
5616 break;
5617 if (ent == NULL
5618 || (h->type != STT_GNU_IFUNC
5619 && (SYMBOL_CALLS_LOCAL (info, h)
5620 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
5621 && h->root.type == bfd_link_hash_undefweak))))
5622 {
5623 /* A PLT entry is not required/allowed when:
5624
5625 1. We are not using ld.so; because then the PLT entry
5626 can't be set up, so we can't use one. In this case,
5627 ppc_elf_adjust_dynamic_symbol won't even be called.
5628
5629 2. GC has rendered the entry unused.
5630
5631 3. We know for certain that a call to this symbol
5632 will go to this object, or will remain undefined. */
5633 h->plt.plist = NULL;
5634 h->needs_plt = 0;
5635 h->pointer_equality_needed = 0;
5636 }
5637 else
5638 {
5639 /* Taking a function's address in a read/write section
5640 doesn't require us to define the function symbol in the
5641 executable on a plt call stub. A dynamic reloc can
5642 be used instead. */
5643 if (h->pointer_equality_needed
5644 && h->type != STT_GNU_IFUNC
5645 && !htab->is_vxworks
5646 && !ppc_elf_hash_entry (h)->has_sda_refs
5647 && !readonly_dynrelocs (h))
5648 {
5649 h->pointer_equality_needed = 0;
5650 h->non_got_ref = 0;
5651 }
5652
5653 /* After adjust_dynamic_symbol, non_got_ref set in the
5654 non-shared case means that we have allocated space in
5655 .dynbss for the symbol and thus dyn_relocs for this
5656 symbol should be discarded.
5657 If we get here we know we are making a PLT entry for this
5658 symbol, and in an executable we'd normally resolve
5659 relocations against this symbol to the PLT entry. Allow
5660 dynamic relocs if the reference is weak, and the dynamic
5661 relocs will not cause text relocation. */
5662 else if (!h->ref_regular_nonweak
5663 && h->non_got_ref
5664 && h->type != STT_GNU_IFUNC
5665 && !htab->is_vxworks
5666 && !ppc_elf_hash_entry (h)->has_sda_refs
5667 && !readonly_dynrelocs (h))
5668 h->non_got_ref = 0;
5669 }
5670 h->protected_def = 0;
5671 return TRUE;
5672 }
5673 else
5674 h->plt.plist = NULL;
5675
5676 /* If this is a weak symbol, and there is a real definition, the
5677 processor independent code will have arranged for us to see the
5678 real definition first, and we can just use the same value. */
5679 if (h->u.weakdef != NULL)
5680 {
5681 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
5682 || h->u.weakdef->root.type == bfd_link_hash_defweak);
5683 h->root.u.def.section = h->u.weakdef->root.u.def.section;
5684 h->root.u.def.value = h->u.weakdef->root.u.def.value;
5685 if (ELIMINATE_COPY_RELOCS)
5686 h->non_got_ref = h->u.weakdef->non_got_ref;
5687 return TRUE;
5688 }
5689
5690 /* This is a reference to a symbol defined by a dynamic object which
5691 is not a function. */
5692
5693 /* If we are creating a shared library, we must presume that the
5694 only references to the symbol are via the global offset table.
5695 For such cases we need not do anything here; the relocations will
5696 be handled correctly by relocate_section. */
5697 if (bfd_link_pic (info))
5698 {
5699 h->protected_def = 0;
5700 return TRUE;
5701 }
5702
5703 /* If there are no references to this symbol that do not use the
5704 GOT, we don't need to generate a copy reloc. */
5705 if (!h->non_got_ref)
5706 {
5707 h->protected_def = 0;
5708 return TRUE;
5709 }
5710
5711 /* Protected variables do not work with .dynbss. The copy in
5712 .dynbss won't be used by the shared library with the protected
5713 definition for the variable. Editing to PIC, or text relocations
5714 are preferable to an incorrect program. */
5715 if (h->protected_def)
5716 {
5717 if (ELIMINATE_COPY_RELOCS
5718 && ppc_elf_hash_entry (h)->has_addr16_ha
5719 && ppc_elf_hash_entry (h)->has_addr16_lo
5720 && htab->params->pic_fixup == 0
5721 && info->disable_target_specific_optimizations <= 1)
5722 htab->params->pic_fixup = 1;
5723 h->non_got_ref = 0;
5724 return TRUE;
5725 }
5726
5727 /* If -z nocopyreloc was given, we won't generate them either. */
5728 if (info->nocopyreloc)
5729 {
5730 h->non_got_ref = 0;
5731 return TRUE;
5732 }
5733
5734 /* If we didn't find any dynamic relocs in read-only sections, then
5735 we'll be keeping the dynamic relocs and avoiding the copy reloc.
5736 We can't do this if there are any small data relocations. This
5737 doesn't work on VxWorks, where we can not have dynamic
5738 relocations (other than copy and jump slot relocations) in an
5739 executable. */
5740 if (ELIMINATE_COPY_RELOCS
5741 && !ppc_elf_hash_entry (h)->has_sda_refs
5742 && !htab->is_vxworks
5743 && !h->def_regular
5744 && !readonly_dynrelocs (h))
5745 {
5746 h->non_got_ref = 0;
5747 return TRUE;
5748 }
5749
5750 /* We must allocate the symbol in our .dynbss section, which will
5751 become part of the .bss section of the executable. There will be
5752 an entry for this symbol in the .dynsym section. The dynamic
5753 object will contain position independent code, so all references
5754 from the dynamic object to this symbol will go through the global
5755 offset table. The dynamic linker will use the .dynsym entry to
5756 determine the address it must put in the global offset table, so
5757 both the dynamic object and the regular object will refer to the
5758 same memory location for the variable.
5759
5760 Of course, if the symbol is referenced using SDAREL relocs, we
5761 must instead allocate it in .sbss. */
5762
5763 if (ppc_elf_hash_entry (h)->has_sda_refs)
5764 s = htab->dynsbss;
5765 else
5766 s = htab->dynbss;
5767 BFD_ASSERT (s != NULL);
5768
5769 /* We must generate a R_PPC_COPY reloc to tell the dynamic linker to
5770 copy the initial value out of the dynamic object and into the
5771 runtime process image. We need to remember the offset into the
5772 .rela.bss section we are going to use. */
5773 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
5774 {
5775 asection *srel;
5776
5777 if (ppc_elf_hash_entry (h)->has_sda_refs)
5778 srel = htab->relsbss;
5779 else
5780 srel = htab->relbss;
5781 BFD_ASSERT (srel != NULL);
5782 srel->size += sizeof (Elf32_External_Rela);
5783 h->needs_copy = 1;
5784 }
5785
5786 return _bfd_elf_adjust_dynamic_copy (info, h, s);
5787 }
5788 \f
5789 /* Generate a symbol to mark plt call stubs. For non-PIC code the sym is
5790 xxxxxxxx.plt_call32.<callee> where xxxxxxxx is a hex number, usually 0,
5791 specifying the addend on the plt relocation. For -fpic code, the sym
5792 is xxxxxxxx.plt_pic32.<callee>, and for -fPIC
5793 xxxxxxxx.got2.plt_pic32.<callee>. */
5794
5795 static bfd_boolean
5796 add_stub_sym (struct plt_entry *ent,
5797 struct elf_link_hash_entry *h,
5798 struct bfd_link_info *info)
5799 {
5800 struct elf_link_hash_entry *sh;
5801 size_t len1, len2, len3;
5802 char *name;
5803 const char *stub;
5804 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
5805
5806 if (bfd_link_pic (info))
5807 stub = ".plt_pic32.";
5808 else
5809 stub = ".plt_call32.";
5810
5811 len1 = strlen (h->root.root.string);
5812 len2 = strlen (stub);
5813 len3 = 0;
5814 if (ent->sec)
5815 len3 = strlen (ent->sec->name);
5816 name = bfd_malloc (len1 + len2 + len3 + 9);
5817 if (name == NULL)
5818 return FALSE;
5819 sprintf (name, "%08x", (unsigned) ent->addend & 0xffffffff);
5820 if (ent->sec)
5821 memcpy (name + 8, ent->sec->name, len3);
5822 memcpy (name + 8 + len3, stub, len2);
5823 memcpy (name + 8 + len3 + len2, h->root.root.string, len1 + 1);
5824 sh = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
5825 if (sh == NULL)
5826 return FALSE;
5827 if (sh->root.type == bfd_link_hash_new)
5828 {
5829 sh->root.type = bfd_link_hash_defined;
5830 sh->root.u.def.section = htab->glink;
5831 sh->root.u.def.value = ent->glink_offset;
5832 sh->ref_regular = 1;
5833 sh->def_regular = 1;
5834 sh->ref_regular_nonweak = 1;
5835 sh->forced_local = 1;
5836 sh->non_elf = 0;
5837 sh->root.linker_def = 1;
5838 }
5839 return TRUE;
5840 }
5841
5842 /* Allocate NEED contiguous space in .got, and return the offset.
5843 Handles allocation of the got header when crossing 32k. */
5844
5845 static bfd_vma
5846 allocate_got (struct ppc_elf_link_hash_table *htab, unsigned int need)
5847 {
5848 bfd_vma where;
5849 unsigned int max_before_header;
5850
5851 if (htab->plt_type == PLT_VXWORKS)
5852 {
5853 where = htab->got->size;
5854 htab->got->size += need;
5855 }
5856 else
5857 {
5858 max_before_header = htab->plt_type == PLT_NEW ? 32768 : 32764;
5859 if (need <= htab->got_gap)
5860 {
5861 where = max_before_header - htab->got_gap;
5862 htab->got_gap -= need;
5863 }
5864 else
5865 {
5866 if (htab->got->size + need > max_before_header
5867 && htab->got->size <= max_before_header)
5868 {
5869 htab->got_gap = max_before_header - htab->got->size;
5870 htab->got->size = max_before_header + htab->got_header_size;
5871 }
5872 where = htab->got->size;
5873 htab->got->size += need;
5874 }
5875 }
5876 return where;
5877 }
5878
5879 /* Allocate space in associated reloc sections for dynamic relocs. */
5880
5881 static bfd_boolean
5882 allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
5883 {
5884 struct bfd_link_info *info = inf;
5885 struct ppc_elf_link_hash_entry *eh;
5886 struct ppc_elf_link_hash_table *htab;
5887 struct elf_dyn_relocs *p;
5888
5889 if (h->root.type == bfd_link_hash_indirect)
5890 return TRUE;
5891
5892 htab = ppc_elf_hash_table (info);
5893 if (htab->elf.dynamic_sections_created
5894 || h->type == STT_GNU_IFUNC)
5895 {
5896 struct plt_entry *ent;
5897 bfd_boolean doneone = FALSE;
5898 bfd_vma plt_offset = 0, glink_offset = 0;
5899 bfd_boolean dyn;
5900
5901 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
5902 if (ent->plt.refcount > 0)
5903 {
5904 /* Make sure this symbol is output as a dynamic symbol. */
5905 if (h->dynindx == -1
5906 && !h->forced_local
5907 && !h->def_regular
5908 && htab->elf.dynamic_sections_created)
5909 {
5910 if (! bfd_elf_link_record_dynamic_symbol (info, h))
5911 return FALSE;
5912 }
5913
5914 dyn = htab->elf.dynamic_sections_created;
5915 if (bfd_link_pic (info)
5916 || h->type == STT_GNU_IFUNC
5917 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))
5918 {
5919 asection *s = htab->plt;
5920 if (!dyn || h->dynindx == -1)
5921 s = htab->iplt;
5922
5923 if (htab->plt_type == PLT_NEW || !dyn || h->dynindx == -1)
5924 {
5925 if (!doneone)
5926 {
5927 plt_offset = s->size;
5928 s->size += 4;
5929 }
5930 ent->plt.offset = plt_offset;
5931
5932 s = htab->glink;
5933 if (!doneone || bfd_link_pic (info))
5934 {
5935 glink_offset = s->size;
5936 s->size += GLINK_ENTRY_SIZE;
5937 if (h == htab->tls_get_addr
5938 && !htab->params->no_tls_get_addr_opt)
5939 s->size += TLS_GET_ADDR_GLINK_SIZE - GLINK_ENTRY_SIZE;
5940 }
5941 if (!doneone
5942 && !bfd_link_pic (info)
5943 && h->def_dynamic
5944 && !h->def_regular)
5945 {
5946 h->root.u.def.section = s;
5947 h->root.u.def.value = glink_offset;
5948 }
5949 ent->glink_offset = glink_offset;
5950
5951 if (htab->params->emit_stub_syms
5952 && !add_stub_sym (ent, h, info))
5953 return FALSE;
5954 }
5955 else
5956 {
5957 if (!doneone)
5958 {
5959 /* If this is the first .plt entry, make room
5960 for the special first entry. */
5961 if (s->size == 0)
5962 s->size += htab->plt_initial_entry_size;
5963
5964 /* The PowerPC PLT is actually composed of two
5965 parts, the first part is 2 words (for a load
5966 and a jump), and then there is a remaining
5967 word available at the end. */
5968 plt_offset = (htab->plt_initial_entry_size
5969 + (htab->plt_slot_size
5970 * ((s->size
5971 - htab->plt_initial_entry_size)
5972 / htab->plt_entry_size)));
5973
5974 /* If this symbol is not defined in a regular
5975 file, and we are not generating a shared
5976 library, then set the symbol to this location
5977 in the .plt. This is to avoid text
5978 relocations, and is required to make
5979 function pointers compare as equal between
5980 the normal executable and the shared library. */
5981 if (! bfd_link_pic (info)
5982 && h->def_dynamic
5983 && !h->def_regular)
5984 {
5985 h->root.u.def.section = s;
5986 h->root.u.def.value = plt_offset;
5987 }
5988
5989 /* Make room for this entry. */
5990 s->size += htab->plt_entry_size;
5991 /* After the 8192nd entry, room for two entries
5992 is allocated. */
5993 if (htab->plt_type == PLT_OLD
5994 && (s->size - htab->plt_initial_entry_size)
5995 / htab->plt_entry_size
5996 > PLT_NUM_SINGLE_ENTRIES)
5997 s->size += htab->plt_entry_size;
5998 }
5999 ent->plt.offset = plt_offset;
6000 }
6001
6002 /* We also need to make an entry in the .rela.plt section. */
6003 if (!doneone)
6004 {
6005 if (!htab->elf.dynamic_sections_created
6006 || h->dynindx == -1)
6007 htab->reliplt->size += sizeof (Elf32_External_Rela);
6008 else
6009 {
6010 htab->relplt->size += sizeof (Elf32_External_Rela);
6011
6012 if (htab->plt_type == PLT_VXWORKS)
6013 {
6014 /* Allocate space for the unloaded relocations. */
6015 if (!bfd_link_pic (info)
6016 && htab->elf.dynamic_sections_created)
6017 {
6018 if (ent->plt.offset
6019 == (bfd_vma) htab->plt_initial_entry_size)
6020 {
6021 htab->srelplt2->size
6022 += (sizeof (Elf32_External_Rela)
6023 * VXWORKS_PLTRESOLVE_RELOCS);
6024 }
6025
6026 htab->srelplt2->size
6027 += (sizeof (Elf32_External_Rela)
6028 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS);
6029 }
6030
6031 /* Every PLT entry has an associated GOT entry in
6032 .got.plt. */
6033 htab->sgotplt->size += 4;
6034 }
6035 }
6036 doneone = TRUE;
6037 }
6038 }
6039 else
6040 ent->plt.offset = (bfd_vma) -1;
6041 }
6042 else
6043 ent->plt.offset = (bfd_vma) -1;
6044
6045 if (!doneone)
6046 {
6047 h->plt.plist = NULL;
6048 h->needs_plt = 0;
6049 }
6050 }
6051 else
6052 {
6053 h->plt.plist = NULL;
6054 h->needs_plt = 0;
6055 }
6056
6057 eh = (struct ppc_elf_link_hash_entry *) h;
6058 if (eh->elf.got.refcount > 0
6059 || (ELIMINATE_COPY_RELOCS
6060 && !eh->elf.def_regular
6061 && eh->elf.protected_def
6062 && eh->has_addr16_ha
6063 && eh->has_addr16_lo
6064 && htab->params->pic_fixup > 0))
6065 {
6066 bfd_boolean dyn;
6067 unsigned int need;
6068
6069 /* Make sure this symbol is output as a dynamic symbol. */
6070 if (eh->elf.dynindx == -1
6071 && !eh->elf.forced_local
6072 && eh->elf.type != STT_GNU_IFUNC
6073 && htab->elf.dynamic_sections_created)
6074 {
6075 if (!bfd_elf_link_record_dynamic_symbol (info, &eh->elf))
6076 return FALSE;
6077 }
6078
6079 need = 0;
6080 if ((eh->tls_mask & TLS_TLS) != 0)
6081 {
6082 if ((eh->tls_mask & TLS_LD) != 0)
6083 {
6084 if (!eh->elf.def_dynamic)
6085 /* We'll just use htab->tlsld_got.offset. This should
6086 always be the case. It's a little odd if we have
6087 a local dynamic reloc against a non-local symbol. */
6088 htab->tlsld_got.refcount += 1;
6089 else
6090 need += 8;
6091 }
6092 if ((eh->tls_mask & TLS_GD) != 0)
6093 need += 8;
6094 if ((eh->tls_mask & (TLS_TPREL | TLS_TPRELGD)) != 0)
6095 need += 4;
6096 if ((eh->tls_mask & TLS_DTPREL) != 0)
6097 need += 4;
6098 }
6099 else
6100 need += 4;
6101 if (need == 0)
6102 eh->elf.got.offset = (bfd_vma) -1;
6103 else
6104 {
6105 eh->elf.got.offset = allocate_got (htab, need);
6106 dyn = htab->elf.dynamic_sections_created;
6107 if ((bfd_link_pic (info)
6108 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, &eh->elf))
6109 && (ELF_ST_VISIBILITY (eh->elf.other) == STV_DEFAULT
6110 || eh->elf.root.type != bfd_link_hash_undefweak))
6111 {
6112 asection *rsec = htab->relgot;
6113
6114 if (eh->elf.type == STT_GNU_IFUNC)
6115 rsec = htab->reliplt;
6116 /* All the entries we allocated need relocs.
6117 Except LD only needs one. */
6118 if ((eh->tls_mask & TLS_LD) != 0
6119 && eh->elf.def_dynamic)
6120 need -= 4;
6121 rsec->size += need * (sizeof (Elf32_External_Rela) / 4);
6122 }
6123 }
6124 }
6125 else
6126 eh->elf.got.offset = (bfd_vma) -1;
6127
6128 if (eh->dyn_relocs == NULL
6129 || !htab->elf.dynamic_sections_created)
6130 return TRUE;
6131
6132 /* In the shared -Bsymbolic case, discard space allocated for
6133 dynamic pc-relative relocs against symbols which turn out to be
6134 defined in regular objects. For the normal shared case, discard
6135 space for relocs that have become local due to symbol visibility
6136 changes. */
6137
6138 if (bfd_link_pic (info))
6139 {
6140 /* Relocs that use pc_count are those that appear on a call insn,
6141 or certain REL relocs (see must_be_dyn_reloc) that can be
6142 generated via assembly. We want calls to protected symbols to
6143 resolve directly to the function rather than going via the plt.
6144 If people want function pointer comparisons to work as expected
6145 then they should avoid writing weird assembly. */
6146 if (SYMBOL_CALLS_LOCAL (info, h))
6147 {
6148 struct elf_dyn_relocs **pp;
6149
6150 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
6151 {
6152 p->count -= p->pc_count;
6153 p->pc_count = 0;
6154 if (p->count == 0)
6155 *pp = p->next;
6156 else
6157 pp = &p->next;
6158 }
6159 }
6160
6161 if (htab->is_vxworks)
6162 {
6163 struct elf_dyn_relocs **pp;
6164
6165 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
6166 {
6167 if (strcmp (p->sec->output_section->name, ".tls_vars") == 0)
6168 *pp = p->next;
6169 else
6170 pp = &p->next;
6171 }
6172 }
6173
6174 /* Discard relocs on undefined symbols that must be local. */
6175 if (eh->dyn_relocs != NULL
6176 && h->root.type == bfd_link_hash_undefined
6177 && (ELF_ST_VISIBILITY (h->other) == STV_HIDDEN
6178 || ELF_ST_VISIBILITY (h->other) == STV_INTERNAL))
6179 eh->dyn_relocs = NULL;
6180
6181 /* Also discard relocs on undefined weak syms with non-default
6182 visibility. */
6183 if (eh->dyn_relocs != NULL
6184 && h->root.type == bfd_link_hash_undefweak)
6185 {
6186 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
6187 eh->dyn_relocs = NULL;
6188
6189 /* Make sure undefined weak symbols are output as a dynamic
6190 symbol in PIEs. */
6191 else if (h->dynindx == -1
6192 && !h->forced_local
6193 && !h->def_regular)
6194 {
6195 if (! bfd_elf_link_record_dynamic_symbol (info, h))
6196 return FALSE;
6197 }
6198 }
6199 }
6200 else if (ELIMINATE_COPY_RELOCS)
6201 {
6202 /* For the non-shared case, discard space for relocs against
6203 symbols which turn out to need copy relocs or are not
6204 dynamic. */
6205
6206 if (!h->non_got_ref
6207 && !h->def_regular
6208 && !(h->protected_def
6209 && eh->has_addr16_ha
6210 && eh->has_addr16_lo
6211 && htab->params->pic_fixup > 0))
6212 {
6213 /* Make sure this symbol is output as a dynamic symbol.
6214 Undefined weak syms won't yet be marked as dynamic. */
6215 if (h->dynindx == -1
6216 && !h->forced_local)
6217 {
6218 if (! bfd_elf_link_record_dynamic_symbol (info, h))
6219 return FALSE;
6220 }
6221
6222 /* If that succeeded, we know we'll be keeping all the
6223 relocs. */
6224 if (h->dynindx != -1)
6225 goto keep;
6226 }
6227
6228 eh->dyn_relocs = NULL;
6229
6230 keep: ;
6231 }
6232
6233 /* Finally, allocate space. */
6234 for (p = eh->dyn_relocs; p != NULL; p = p->next)
6235 {
6236 asection *sreloc = elf_section_data (p->sec)->sreloc;
6237 if (eh->elf.type == STT_GNU_IFUNC)
6238 sreloc = htab->reliplt;
6239 sreloc->size += p->count * sizeof (Elf32_External_Rela);
6240 }
6241
6242 return TRUE;
6243 }
6244
6245 /* Set DF_TEXTREL if we find any dynamic relocs that apply to
6246 read-only sections. */
6247
6248 static bfd_boolean
6249 maybe_set_textrel (struct elf_link_hash_entry *h, void *info)
6250 {
6251 if (h->root.type == bfd_link_hash_indirect)
6252 return TRUE;
6253
6254 if (readonly_dynrelocs (h))
6255 {
6256 ((struct bfd_link_info *) info)->flags |= DF_TEXTREL;
6257
6258 /* Not an error, just cut short the traversal. */
6259 return FALSE;
6260 }
6261 return TRUE;
6262 }
6263
6264 static const unsigned char glink_eh_frame_cie[] =
6265 {
6266 0, 0, 0, 16, /* length. */
6267 0, 0, 0, 0, /* id. */
6268 1, /* CIE version. */
6269 'z', 'R', 0, /* Augmentation string. */
6270 4, /* Code alignment. */
6271 0x7c, /* Data alignment. */
6272 65, /* RA reg. */
6273 1, /* Augmentation size. */
6274 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding. */
6275 DW_CFA_def_cfa, 1, 0 /* def_cfa: r1 offset 0. */
6276 };
6277
6278 /* Set the sizes of the dynamic sections. */
6279
6280 static bfd_boolean
6281 ppc_elf_size_dynamic_sections (bfd *output_bfd,
6282 struct bfd_link_info *info)
6283 {
6284 struct ppc_elf_link_hash_table *htab;
6285 asection *s;
6286 bfd_boolean relocs;
6287 bfd *ibfd;
6288
6289 #ifdef DEBUG
6290 fprintf (stderr, "ppc_elf_size_dynamic_sections called\n");
6291 #endif
6292
6293 htab = ppc_elf_hash_table (info);
6294 BFD_ASSERT (htab->elf.dynobj != NULL);
6295
6296 if (elf_hash_table (info)->dynamic_sections_created)
6297 {
6298 /* Set the contents of the .interp section to the interpreter. */
6299 if (bfd_link_executable (info) && !info->nointerp)
6300 {
6301 s = bfd_get_linker_section (htab->elf.dynobj, ".interp");
6302 BFD_ASSERT (s != NULL);
6303 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
6304 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
6305 }
6306 }
6307
6308 if (htab->plt_type == PLT_OLD)
6309 htab->got_header_size = 16;
6310 else if (htab->plt_type == PLT_NEW)
6311 htab->got_header_size = 12;
6312
6313 /* Set up .got offsets for local syms, and space for local dynamic
6314 relocs. */
6315 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
6316 {
6317 bfd_signed_vma *local_got;
6318 bfd_signed_vma *end_local_got;
6319 struct plt_entry **local_plt;
6320 struct plt_entry **end_local_plt;
6321 char *lgot_masks;
6322 bfd_size_type locsymcount;
6323 Elf_Internal_Shdr *symtab_hdr;
6324
6325 if (!is_ppc_elf (ibfd))
6326 continue;
6327
6328 for (s = ibfd->sections; s != NULL; s = s->next)
6329 {
6330 struct ppc_dyn_relocs *p;
6331
6332 for (p = ((struct ppc_dyn_relocs *)
6333 elf_section_data (s)->local_dynrel);
6334 p != NULL;
6335 p = p->next)
6336 {
6337 if (!bfd_is_abs_section (p->sec)
6338 && bfd_is_abs_section (p->sec->output_section))
6339 {
6340 /* Input section has been discarded, either because
6341 it is a copy of a linkonce section or due to
6342 linker script /DISCARD/, so we'll be discarding
6343 the relocs too. */
6344 }
6345 else if (htab->is_vxworks
6346 && strcmp (p->sec->output_section->name,
6347 ".tls_vars") == 0)
6348 {
6349 /* Relocations in vxworks .tls_vars sections are
6350 handled specially by the loader. */
6351 }
6352 else if (p->count != 0)
6353 {
6354 asection *sreloc = elf_section_data (p->sec)->sreloc;
6355 if (p->ifunc)
6356 sreloc = htab->reliplt;
6357 sreloc->size += p->count * sizeof (Elf32_External_Rela);
6358 if ((p->sec->output_section->flags
6359 & (SEC_READONLY | SEC_ALLOC))
6360 == (SEC_READONLY | SEC_ALLOC))
6361 info->flags |= DF_TEXTREL;
6362 }
6363 }
6364 }
6365
6366 local_got = elf_local_got_refcounts (ibfd);
6367 if (!local_got)
6368 continue;
6369
6370 symtab_hdr = &elf_symtab_hdr (ibfd);
6371 locsymcount = symtab_hdr->sh_info;
6372 end_local_got = local_got + locsymcount;
6373 local_plt = (struct plt_entry **) end_local_got;
6374 end_local_plt = local_plt + locsymcount;
6375 lgot_masks = (char *) end_local_plt;
6376
6377 for (; local_got < end_local_got; ++local_got, ++lgot_masks)
6378 if (*local_got > 0)
6379 {
6380 unsigned int need = 0;
6381 if ((*lgot_masks & TLS_TLS) != 0)
6382 {
6383 if ((*lgot_masks & TLS_GD) != 0)
6384 need += 8;
6385 if ((*lgot_masks & TLS_LD) != 0)
6386 htab->tlsld_got.refcount += 1;
6387 if ((*lgot_masks & (TLS_TPREL | TLS_TPRELGD)) != 0)
6388 need += 4;
6389 if ((*lgot_masks & TLS_DTPREL) != 0)
6390 need += 4;
6391 }
6392 else
6393 need += 4;
6394 if (need == 0)
6395 *local_got = (bfd_vma) -1;
6396 else
6397 {
6398 *local_got = allocate_got (htab, need);
6399 if (bfd_link_pic (info))
6400 {
6401 asection *srel = htab->relgot;
6402 if ((*lgot_masks & PLT_IFUNC) != 0)
6403 srel = htab->reliplt;
6404 srel->size += need * (sizeof (Elf32_External_Rela) / 4);
6405 }
6406 }
6407 }
6408 else
6409 *local_got = (bfd_vma) -1;
6410
6411 if (htab->is_vxworks)
6412 continue;
6413
6414 /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */
6415 for (; local_plt < end_local_plt; ++local_plt)
6416 {
6417 struct plt_entry *ent;
6418 bfd_boolean doneone = FALSE;
6419 bfd_vma plt_offset = 0, glink_offset = 0;
6420
6421 for (ent = *local_plt; ent != NULL; ent = ent->next)
6422 if (ent->plt.refcount > 0)
6423 {
6424 s = htab->iplt;
6425
6426 if (!doneone)
6427 {
6428 plt_offset = s->size;
6429 s->size += 4;
6430 }
6431 ent->plt.offset = plt_offset;
6432
6433 s = htab->glink;
6434 if (!doneone || bfd_link_pic (info))
6435 {
6436 glink_offset = s->size;
6437 s->size += GLINK_ENTRY_SIZE;
6438 }
6439 ent->glink_offset = glink_offset;
6440
6441 if (!doneone)
6442 {
6443 htab->reliplt->size += sizeof (Elf32_External_Rela);
6444 doneone = TRUE;
6445 }
6446 }
6447 else
6448 ent->plt.offset = (bfd_vma) -1;
6449 }
6450 }
6451
6452 /* Allocate space for global sym dynamic relocs. */
6453 elf_link_hash_traverse (elf_hash_table (info), allocate_dynrelocs, info);
6454
6455 if (htab->tlsld_got.refcount > 0)
6456 {
6457 htab->tlsld_got.offset = allocate_got (htab, 8);
6458 if (bfd_link_pic (info))
6459 htab->relgot->size += sizeof (Elf32_External_Rela);
6460 }
6461 else
6462 htab->tlsld_got.offset = (bfd_vma) -1;
6463
6464 if (htab->got != NULL && htab->plt_type != PLT_VXWORKS)
6465 {
6466 unsigned int g_o_t = 32768;
6467
6468 /* If we haven't allocated the header, do so now. When we get here,
6469 for old plt/got the got size will be 0 to 32764 (not allocated),
6470 or 32780 to 65536 (header allocated). For new plt/got, the
6471 corresponding ranges are 0 to 32768 and 32780 to 65536. */
6472 if (htab->got->size <= 32768)
6473 {
6474 g_o_t = htab->got->size;
6475 if (htab->plt_type == PLT_OLD)
6476 g_o_t += 4;
6477 htab->got->size += htab->got_header_size;
6478 }
6479
6480 htab->elf.hgot->root.u.def.value = g_o_t;
6481 }
6482 if (bfd_link_pic (info))
6483 {
6484 struct elf_link_hash_entry *sda = htab->sdata[0].sym;
6485
6486 sda->root.u.def.section = htab->elf.hgot->root.u.def.section;
6487 sda->root.u.def.value = htab->elf.hgot->root.u.def.value;
6488 }
6489 if (info->emitrelocations)
6490 {
6491 struct elf_link_hash_entry *sda = htab->sdata[0].sym;
6492
6493 if (sda != NULL && sda->ref_regular)
6494 sda->root.u.def.section->flags |= SEC_KEEP;
6495 sda = htab->sdata[1].sym;
6496 if (sda != NULL && sda->ref_regular)
6497 sda->root.u.def.section->flags |= SEC_KEEP;
6498 }
6499
6500 if (htab->glink != NULL
6501 && htab->glink->size != 0
6502 && htab->elf.dynamic_sections_created)
6503 {
6504 htab->glink_pltresolve = htab->glink->size;
6505 /* Space for the branch table. */
6506 htab->glink->size += htab->glink->size / (GLINK_ENTRY_SIZE / 4) - 4;
6507 /* Pad out to align the start of PLTresolve. */
6508 htab->glink->size += -htab->glink->size & (htab->params->ppc476_workaround
6509 ? 63 : 15);
6510 htab->glink->size += GLINK_PLTRESOLVE;
6511
6512 if (htab->params->emit_stub_syms)
6513 {
6514 struct elf_link_hash_entry *sh;
6515 sh = elf_link_hash_lookup (&htab->elf, "__glink",
6516 TRUE, FALSE, FALSE);
6517 if (sh == NULL)
6518 return FALSE;
6519 if (sh->root.type == bfd_link_hash_new)
6520 {
6521 sh->root.type = bfd_link_hash_defined;
6522 sh->root.u.def.section = htab->glink;
6523 sh->root.u.def.value = htab->glink_pltresolve;
6524 sh->ref_regular = 1;
6525 sh->def_regular = 1;
6526 sh->ref_regular_nonweak = 1;
6527 sh->forced_local = 1;
6528 sh->non_elf = 0;
6529 sh->root.linker_def = 1;
6530 }
6531 sh = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve",
6532 TRUE, FALSE, FALSE);
6533 if (sh == NULL)
6534 return FALSE;
6535 if (sh->root.type == bfd_link_hash_new)
6536 {
6537 sh->root.type = bfd_link_hash_defined;
6538 sh->root.u.def.section = htab->glink;
6539 sh->root.u.def.value = htab->glink->size - GLINK_PLTRESOLVE;
6540 sh->ref_regular = 1;
6541 sh->def_regular = 1;
6542 sh->ref_regular_nonweak = 1;
6543 sh->forced_local = 1;
6544 sh->non_elf = 0;
6545 sh->root.linker_def = 1;
6546 }
6547 }
6548 }
6549
6550 if (htab->glink != NULL
6551 && htab->glink->size != 0
6552 && htab->glink_eh_frame != NULL
6553 && !bfd_is_abs_section (htab->glink_eh_frame->output_section)
6554 && _bfd_elf_eh_frame_present (info))
6555 {
6556 s = htab->glink_eh_frame;
6557 s->size = sizeof (glink_eh_frame_cie) + 20;
6558 if (bfd_link_pic (info))
6559 {
6560 s->size += 4;
6561 if (htab->glink->size - GLINK_PLTRESOLVE + 8 >= 256)
6562 s->size += 4;
6563 }
6564 }
6565
6566 /* We've now determined the sizes of the various dynamic sections.
6567 Allocate memory for them. */
6568 relocs = FALSE;
6569 for (s = htab->elf.dynobj->sections; s != NULL; s = s->next)
6570 {
6571 bfd_boolean strip_section = TRUE;
6572
6573 if ((s->flags & SEC_LINKER_CREATED) == 0)
6574 continue;
6575
6576 if (s == htab->plt
6577 || s == htab->got)
6578 {
6579 /* We'd like to strip these sections if they aren't needed, but if
6580 we've exported dynamic symbols from them we must leave them.
6581 It's too late to tell BFD to get rid of the symbols. */
6582 if (htab->elf.hplt != NULL)
6583 strip_section = FALSE;
6584 /* Strip this section if we don't need it; see the
6585 comment below. */
6586 }
6587 else if (s == htab->iplt
6588 || s == htab->glink
6589 || s == htab->glink_eh_frame
6590 || s == htab->sgotplt
6591 || s == htab->sbss
6592 || s == htab->dynbss
6593 || s == htab->dynsbss)
6594 {
6595 /* Strip these too. */
6596 }
6597 else if (s == htab->sdata[0].section
6598 || s == htab->sdata[1].section)
6599 {
6600 strip_section = (s->flags & SEC_KEEP) == 0;
6601 }
6602 else if (CONST_STRNEQ (bfd_get_section_name (htab->elf.dynobj, s),
6603 ".rela"))
6604 {
6605 if (s->size != 0)
6606 {
6607 /* Remember whether there are any relocation sections. */
6608 relocs = TRUE;
6609
6610 /* We use the reloc_count field as a counter if we need
6611 to copy relocs into the output file. */
6612 s->reloc_count = 0;
6613 }
6614 }
6615 else
6616 {
6617 /* It's not one of our sections, so don't allocate space. */
6618 continue;
6619 }
6620
6621 if (s->size == 0 && strip_section)
6622 {
6623 /* If we don't need this section, strip it from the
6624 output file. This is mostly to handle .rela.bss and
6625 .rela.plt. We must create both sections in
6626 create_dynamic_sections, because they must be created
6627 before the linker maps input sections to output
6628 sections. The linker does that before
6629 adjust_dynamic_symbol is called, and it is that
6630 function which decides whether anything needs to go
6631 into these sections. */
6632 s->flags |= SEC_EXCLUDE;
6633 continue;
6634 }
6635
6636 if ((s->flags & SEC_HAS_CONTENTS) == 0)
6637 continue;
6638
6639 /* Allocate memory for the section contents. */
6640 s->contents = bfd_zalloc (htab->elf.dynobj, s->size);
6641 if (s->contents == NULL)
6642 return FALSE;
6643 }
6644
6645 if (htab->elf.dynamic_sections_created)
6646 {
6647 /* Add some entries to the .dynamic section. We fill in the
6648 values later, in ppc_elf_finish_dynamic_sections, but we
6649 must add the entries now so that we get the correct size for
6650 the .dynamic section. The DT_DEBUG entry is filled in by the
6651 dynamic linker and used by the debugger. */
6652 #define add_dynamic_entry(TAG, VAL) \
6653 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
6654
6655 if (bfd_link_executable (info))
6656 {
6657 if (!add_dynamic_entry (DT_DEBUG, 0))
6658 return FALSE;
6659 }
6660
6661 if (htab->plt != NULL && htab->plt->size != 0)
6662 {
6663 if (!add_dynamic_entry (DT_PLTGOT, 0)
6664 || !add_dynamic_entry (DT_PLTRELSZ, 0)
6665 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
6666 || !add_dynamic_entry (DT_JMPREL, 0))
6667 return FALSE;
6668 }
6669
6670 if (htab->plt_type == PLT_NEW
6671 && htab->glink != NULL
6672 && htab->glink->size != 0)
6673 {
6674 if (!add_dynamic_entry (DT_PPC_GOT, 0))
6675 return FALSE;
6676 if (!htab->params->no_tls_get_addr_opt
6677 && htab->tls_get_addr != NULL
6678 && htab->tls_get_addr->plt.plist != NULL
6679 && !add_dynamic_entry (DT_PPC_OPT, PPC_OPT_TLS))
6680 return FALSE;
6681 }
6682
6683 if (relocs)
6684 {
6685 if (!add_dynamic_entry (DT_RELA, 0)
6686 || !add_dynamic_entry (DT_RELASZ, 0)
6687 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
6688 return FALSE;
6689 }
6690
6691 /* If any dynamic relocs apply to a read-only section, then we
6692 need a DT_TEXTREL entry. */
6693 if ((info->flags & DF_TEXTREL) == 0)
6694 elf_link_hash_traverse (elf_hash_table (info), maybe_set_textrel,
6695 info);
6696
6697 if ((info->flags & DF_TEXTREL) != 0)
6698 {
6699 if (!add_dynamic_entry (DT_TEXTREL, 0))
6700 return FALSE;
6701 }
6702 if (htab->is_vxworks
6703 && !elf_vxworks_add_dynamic_entries (output_bfd, info))
6704 return FALSE;
6705 }
6706 #undef add_dynamic_entry
6707
6708 if (htab->glink_eh_frame != NULL
6709 && htab->glink_eh_frame->contents != NULL)
6710 {
6711 unsigned char *p = htab->glink_eh_frame->contents;
6712 bfd_vma val;
6713
6714 memcpy (p, glink_eh_frame_cie, sizeof (glink_eh_frame_cie));
6715 /* CIE length (rewrite in case little-endian). */
6716 bfd_put_32 (htab->elf.dynobj, sizeof (glink_eh_frame_cie) - 4, p);
6717 p += sizeof (glink_eh_frame_cie);
6718 /* FDE length. */
6719 val = htab->glink_eh_frame->size - 4 - sizeof (glink_eh_frame_cie);
6720 bfd_put_32 (htab->elf.dynobj, val, p);
6721 p += 4;
6722 /* CIE pointer. */
6723 val = p - htab->glink_eh_frame->contents;
6724 bfd_put_32 (htab->elf.dynobj, val, p);
6725 p += 4;
6726 /* Offset to .glink. Set later. */
6727 p += 4;
6728 /* .glink size. */
6729 bfd_put_32 (htab->elf.dynobj, htab->glink->size, p);
6730 p += 4;
6731 /* Augmentation. */
6732 p += 1;
6733
6734 if (bfd_link_pic (info)
6735 && htab->elf.dynamic_sections_created)
6736 {
6737 bfd_vma adv = (htab->glink->size - GLINK_PLTRESOLVE + 8) >> 2;
6738 if (adv < 64)
6739 *p++ = DW_CFA_advance_loc + adv;
6740 else if (adv < 256)
6741 {
6742 *p++ = DW_CFA_advance_loc1;
6743 *p++ = adv;
6744 }
6745 else if (adv < 65536)
6746 {
6747 *p++ = DW_CFA_advance_loc2;
6748 bfd_put_16 (htab->elf.dynobj, adv, p);
6749 p += 2;
6750 }
6751 else
6752 {
6753 *p++ = DW_CFA_advance_loc4;
6754 bfd_put_32 (htab->elf.dynobj, adv, p);
6755 p += 4;
6756 }
6757 *p++ = DW_CFA_register;
6758 *p++ = 65;
6759 p++;
6760 *p++ = DW_CFA_advance_loc + 4;
6761 *p++ = DW_CFA_restore_extended;
6762 *p++ = 65;
6763 }
6764 BFD_ASSERT ((bfd_vma) ((p + 3 - htab->glink_eh_frame->contents) & -4)
6765 == htab->glink_eh_frame->size);
6766 }
6767
6768 return TRUE;
6769 }
6770
6771 /* Arrange to have _SDA_BASE_ or _SDA2_BASE_ stripped from the output
6772 if it looks like nothing is using them. */
6773
6774 static void
6775 maybe_strip_sdasym (bfd *output_bfd, elf_linker_section_t *lsect)
6776 {
6777 struct elf_link_hash_entry *sda = lsect->sym;
6778
6779 if (sda != NULL && !sda->ref_regular && sda->dynindx == -1)
6780 {
6781 asection *s;
6782
6783 s = bfd_get_section_by_name (output_bfd, lsect->name);
6784 if (s == NULL || bfd_section_removed_from_list (output_bfd, s))
6785 {
6786 s = bfd_get_section_by_name (output_bfd, lsect->bss_name);
6787 if (s == NULL || bfd_section_removed_from_list (output_bfd, s))
6788 {
6789 sda->def_regular = 0;
6790 /* This is somewhat magic. See elf_link_output_extsym. */
6791 sda->ref_dynamic = 1;
6792 sda->forced_local = 0;
6793 }
6794 }
6795 }
6796 }
6797
6798 void
6799 ppc_elf_maybe_strip_sdata_syms (struct bfd_link_info *info)
6800 {
6801 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
6802
6803 if (htab != NULL)
6804 {
6805 maybe_strip_sdasym (info->output_bfd, &htab->sdata[0]);
6806 maybe_strip_sdasym (info->output_bfd, &htab->sdata[1]);
6807 }
6808 }
6809
6810
6811 /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
6812
6813 static bfd_boolean
6814 ppc_elf_hash_symbol (struct elf_link_hash_entry *h)
6815 {
6816 if (h->plt.plist != NULL
6817 && !h->def_regular
6818 && (!h->pointer_equality_needed
6819 || !h->ref_regular_nonweak))
6820 return FALSE;
6821
6822 return _bfd_elf_hash_symbol (h);
6823 }
6824 \f
6825 #define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0]))
6826
6827 /* Relaxation trampolines. r12 is available for clobbering (r11, is
6828 used for some functions that are allowed to break the ABI). */
6829 static const int shared_stub_entry[] =
6830 {
6831 0x7c0802a6, /* mflr 0 */
6832 0x429f0005, /* bcl 20, 31, .Lxxx */
6833 0x7d8802a6, /* mflr 12 */
6834 0x3d8c0000, /* addis 12, 12, (xxx-.Lxxx)@ha */
6835 0x398c0000, /* addi 12, 12, (xxx-.Lxxx)@l */
6836 0x7c0803a6, /* mtlr 0 */
6837 0x7d8903a6, /* mtctr 12 */
6838 0x4e800420, /* bctr */
6839 };
6840
6841 static const int stub_entry[] =
6842 {
6843 0x3d800000, /* lis 12,xxx@ha */
6844 0x398c0000, /* addi 12,12,xxx@l */
6845 0x7d8903a6, /* mtctr 12 */
6846 0x4e800420, /* bctr */
6847 };
6848
6849 struct ppc_elf_relax_info
6850 {
6851 unsigned int workaround_size;
6852 unsigned int picfixup_size;
6853 };
6854
6855 /* This function implements long branch trampolines, and the ppc476
6856 icache bug workaround. Any section needing trampolines or patch
6857 space for the workaround has its size extended so that we can
6858 add trampolines at the end of the section. */
6859
6860 static bfd_boolean
6861 ppc_elf_relax_section (bfd *abfd,
6862 asection *isec,
6863 struct bfd_link_info *link_info,
6864 bfd_boolean *again)
6865 {
6866 struct one_branch_fixup
6867 {
6868 struct one_branch_fixup *next;
6869 asection *tsec;
6870 /* Final link, can use the symbol offset. For a
6871 relocatable link we use the symbol's index. */
6872 bfd_vma toff;
6873 bfd_vma trampoff;
6874 };
6875
6876 Elf_Internal_Shdr *symtab_hdr;
6877 bfd_byte *contents = NULL;
6878 Elf_Internal_Sym *isymbuf = NULL;
6879 Elf_Internal_Rela *internal_relocs = NULL;
6880 Elf_Internal_Rela *irel, *irelend = NULL;
6881 struct one_branch_fixup *branch_fixups = NULL;
6882 struct ppc_elf_relax_info *relax_info = NULL;
6883 unsigned changes = 0;
6884 bfd_boolean workaround_change;
6885 struct ppc_elf_link_hash_table *htab;
6886 bfd_size_type trampbase, trampoff, newsize, picfixup_size;
6887 asection *got2;
6888 bfd_boolean maybe_pasted;
6889
6890 *again = FALSE;
6891
6892 /* No need to do anything with non-alloc or non-code sections. */
6893 if ((isec->flags & SEC_ALLOC) == 0
6894 || (isec->flags & SEC_CODE) == 0
6895 || (isec->flags & SEC_LINKER_CREATED) != 0
6896 || isec->size < 4)
6897 return TRUE;
6898
6899 /* We cannot represent the required PIC relocs in the output, so don't
6900 do anything. The linker doesn't support mixing -shared and -r
6901 anyway. */
6902 if (bfd_link_relocatable (link_info) && bfd_link_pic (link_info))
6903 return TRUE;
6904
6905 htab = ppc_elf_hash_table (link_info);
6906 if (htab == NULL)
6907 return TRUE;
6908
6909 isec->size = (isec->size + 3) & -4;
6910 if (isec->rawsize == 0)
6911 isec->rawsize = isec->size;
6912 trampbase = isec->size;
6913
6914 BFD_ASSERT (isec->sec_info_type == SEC_INFO_TYPE_NONE
6915 || isec->sec_info_type == SEC_INFO_TYPE_TARGET);
6916 isec->sec_info_type = SEC_INFO_TYPE_TARGET;
6917
6918 if (htab->params->ppc476_workaround
6919 || htab->params->pic_fixup > 0)
6920 {
6921 if (elf_section_data (isec)->sec_info == NULL)
6922 {
6923 elf_section_data (isec)->sec_info
6924 = bfd_zalloc (abfd, sizeof (struct ppc_elf_relax_info));
6925 if (elf_section_data (isec)->sec_info == NULL)
6926 return FALSE;
6927 }
6928 relax_info = elf_section_data (isec)->sec_info;
6929 trampbase -= relax_info->workaround_size;
6930 }
6931
6932 maybe_pasted = (strcmp (isec->output_section->name, ".init") == 0
6933 || strcmp (isec->output_section->name, ".fini") == 0);
6934 /* Space for a branch around any trampolines. */
6935 trampoff = trampbase;
6936 if (maybe_pasted && trampbase == isec->rawsize)
6937 trampoff += 4;
6938
6939 symtab_hdr = &elf_symtab_hdr (abfd);
6940 picfixup_size = 0;
6941 if (htab->params->branch_trampolines
6942 || htab->params->pic_fixup > 0)
6943 {
6944 /* Get a copy of the native relocations. */
6945 if (isec->reloc_count != 0)
6946 {
6947 internal_relocs = _bfd_elf_link_read_relocs (abfd, isec, NULL, NULL,
6948 link_info->keep_memory);
6949 if (internal_relocs == NULL)
6950 goto error_return;
6951 }
6952
6953 got2 = bfd_get_section_by_name (abfd, ".got2");
6954
6955 irelend = internal_relocs + isec->reloc_count;
6956 for (irel = internal_relocs; irel < irelend; irel++)
6957 {
6958 unsigned long r_type = ELF32_R_TYPE (irel->r_info);
6959 bfd_vma toff, roff;
6960 asection *tsec;
6961 struct one_branch_fixup *f;
6962 size_t insn_offset = 0;
6963 bfd_vma max_branch_offset = 0, val;
6964 bfd_byte *hit_addr;
6965 unsigned long t0;
6966 struct elf_link_hash_entry *h;
6967 struct plt_entry **plist;
6968 unsigned char sym_type;
6969
6970 switch (r_type)
6971 {
6972 case R_PPC_REL24:
6973 case R_PPC_LOCAL24PC:
6974 case R_PPC_PLTREL24:
6975 max_branch_offset = 1 << 25;
6976 break;
6977
6978 case R_PPC_REL14:
6979 case R_PPC_REL14_BRTAKEN:
6980 case R_PPC_REL14_BRNTAKEN:
6981 max_branch_offset = 1 << 15;
6982 break;
6983
6984 case R_PPC_ADDR16_HA:
6985 if (htab->params->pic_fixup > 0)
6986 break;
6987 continue;
6988
6989 default:
6990 continue;
6991 }
6992
6993 /* Get the value of the symbol referred to by the reloc. */
6994 h = NULL;
6995 if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
6996 {
6997 /* A local symbol. */
6998 Elf_Internal_Sym *isym;
6999
7000 /* Read this BFD's local symbols. */
7001 if (isymbuf == NULL)
7002 {
7003 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
7004 if (isymbuf == NULL)
7005 isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
7006 symtab_hdr->sh_info, 0,
7007 NULL, NULL, NULL);
7008 if (isymbuf == 0)
7009 goto error_return;
7010 }
7011 isym = isymbuf + ELF32_R_SYM (irel->r_info);
7012 if (isym->st_shndx == SHN_UNDEF)
7013 tsec = bfd_und_section_ptr;
7014 else if (isym->st_shndx == SHN_ABS)
7015 tsec = bfd_abs_section_ptr;
7016 else if (isym->st_shndx == SHN_COMMON)
7017 tsec = bfd_com_section_ptr;
7018 else
7019 tsec = bfd_section_from_elf_index (abfd, isym->st_shndx);
7020
7021 toff = isym->st_value;
7022 sym_type = ELF_ST_TYPE (isym->st_info);
7023 }
7024 else
7025 {
7026 /* Global symbol handling. */
7027 unsigned long indx;
7028
7029 indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
7030 h = elf_sym_hashes (abfd)[indx];
7031
7032 while (h->root.type == bfd_link_hash_indirect
7033 || h->root.type == bfd_link_hash_warning)
7034 h = (struct elf_link_hash_entry *) h->root.u.i.link;
7035
7036 if (h->root.type == bfd_link_hash_defined
7037 || h->root.type == bfd_link_hash_defweak)
7038 {
7039 tsec = h->root.u.def.section;
7040 toff = h->root.u.def.value;
7041 }
7042 else if (h->root.type == bfd_link_hash_undefined
7043 || h->root.type == bfd_link_hash_undefweak)
7044 {
7045 tsec = bfd_und_section_ptr;
7046 toff = bfd_link_relocatable (link_info) ? indx : 0;
7047 }
7048 else
7049 continue;
7050
7051 /* If this branch is to __tls_get_addr then we may later
7052 optimise away the call. We won't be needing a long-
7053 branch stub in that case. */
7054 if (bfd_link_executable (link_info)
7055 && h == htab->tls_get_addr
7056 && irel != internal_relocs)
7057 {
7058 unsigned long t_symndx = ELF32_R_SYM (irel[-1].r_info);
7059 unsigned long t_rtype = ELF32_R_TYPE (irel[-1].r_info);
7060 unsigned int tls_mask = 0;
7061
7062 /* The previous reloc should be one of R_PPC_TLSGD or
7063 R_PPC_TLSLD, or for older object files, a reloc
7064 on the __tls_get_addr arg setup insn. Get tls
7065 mask bits from the symbol on that reloc. */
7066 if (t_symndx < symtab_hdr->sh_info)
7067 {
7068 bfd_vma *local_got_offsets = elf_local_got_offsets (abfd);
7069
7070 if (local_got_offsets != NULL)
7071 {
7072 struct plt_entry **local_plt = (struct plt_entry **)
7073 (local_got_offsets + symtab_hdr->sh_info);
7074 char *lgot_masks = (char *)
7075 (local_plt + symtab_hdr->sh_info);
7076 tls_mask = lgot_masks[t_symndx];
7077 }
7078 }
7079 else
7080 {
7081 struct elf_link_hash_entry *th
7082 = elf_sym_hashes (abfd)[t_symndx - symtab_hdr->sh_info];
7083
7084 while (th->root.type == bfd_link_hash_indirect
7085 || th->root.type == bfd_link_hash_warning)
7086 th = (struct elf_link_hash_entry *) th->root.u.i.link;
7087
7088 tls_mask
7089 = ((struct ppc_elf_link_hash_entry *) th)->tls_mask;
7090 }
7091
7092 /* The mask bits tell us if the call will be
7093 optimised away. */
7094 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0
7095 && (t_rtype == R_PPC_TLSGD
7096 || t_rtype == R_PPC_GOT_TLSGD16
7097 || t_rtype == R_PPC_GOT_TLSGD16_LO))
7098 continue;
7099 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0
7100 && (t_rtype == R_PPC_TLSLD
7101 || t_rtype == R_PPC_GOT_TLSLD16
7102 || t_rtype == R_PPC_GOT_TLSLD16_LO))
7103 continue;
7104 }
7105
7106 sym_type = h->type;
7107 }
7108
7109 if (r_type == R_PPC_ADDR16_HA)
7110 {
7111 if (h != NULL
7112 && !h->def_regular
7113 && h->protected_def
7114 && ppc_elf_hash_entry (h)->has_addr16_ha
7115 && ppc_elf_hash_entry (h)->has_addr16_lo)
7116 picfixup_size += 12;
7117 continue;
7118 }
7119
7120 /* The condition here under which we call find_plt_ent must
7121 match that in relocate_section. If we call find_plt_ent here
7122 but not in relocate_section, or vice versa, then the branch
7123 destination used here may be incorrect. */
7124 plist = NULL;
7125 if (h != NULL)
7126 {
7127 /* We know is_branch_reloc (r_type) is true. */
7128 if (h->type == STT_GNU_IFUNC
7129 || r_type == R_PPC_PLTREL24)
7130 plist = &h->plt.plist;
7131 }
7132 else if (sym_type == STT_GNU_IFUNC
7133 && elf_local_got_offsets (abfd) != NULL)
7134 {
7135 bfd_vma *local_got_offsets = elf_local_got_offsets (abfd);
7136 struct plt_entry **local_plt = (struct plt_entry **)
7137 (local_got_offsets + symtab_hdr->sh_info);
7138 plist = local_plt + ELF32_R_SYM (irel->r_info);
7139 }
7140 if (plist != NULL)
7141 {
7142 bfd_vma addend = 0;
7143 struct plt_entry *ent;
7144
7145 if (r_type == R_PPC_PLTREL24 && bfd_link_pic (link_info))
7146 addend = irel->r_addend;
7147 ent = find_plt_ent (plist, got2, addend);
7148 if (ent != NULL)
7149 {
7150 if (htab->plt_type == PLT_NEW
7151 || h == NULL
7152 || !htab->elf.dynamic_sections_created
7153 || h->dynindx == -1)
7154 {
7155 tsec = htab->glink;
7156 toff = ent->glink_offset;
7157 }
7158 else
7159 {
7160 tsec = htab->plt;
7161 toff = ent->plt.offset;
7162 }
7163 }
7164 }
7165
7166 /* If the branch and target are in the same section, you have
7167 no hope of adding stubs. We'll error out later should the
7168 branch overflow. */
7169 if (tsec == isec)
7170 continue;
7171
7172 /* There probably isn't any reason to handle symbols in
7173 SEC_MERGE sections; SEC_MERGE doesn't seem a likely
7174 attribute for a code section, and we are only looking at
7175 branches. However, implement it correctly here as a
7176 reference for other target relax_section functions. */
7177 if (0 && tsec->sec_info_type == SEC_INFO_TYPE_MERGE)
7178 {
7179 /* At this stage in linking, no SEC_MERGE symbol has been
7180 adjusted, so all references to such symbols need to be
7181 passed through _bfd_merged_section_offset. (Later, in
7182 relocate_section, all SEC_MERGE symbols *except* for
7183 section symbols have been adjusted.)
7184
7185 gas may reduce relocations against symbols in SEC_MERGE
7186 sections to a relocation against the section symbol when
7187 the original addend was zero. When the reloc is against
7188 a section symbol we should include the addend in the
7189 offset passed to _bfd_merged_section_offset, since the
7190 location of interest is the original symbol. On the
7191 other hand, an access to "sym+addend" where "sym" is not
7192 a section symbol should not include the addend; Such an
7193 access is presumed to be an offset from "sym"; The
7194 location of interest is just "sym". */
7195 if (sym_type == STT_SECTION)
7196 toff += irel->r_addend;
7197
7198 toff
7199 = _bfd_merged_section_offset (abfd, &tsec,
7200 elf_section_data (tsec)->sec_info,
7201 toff);
7202
7203 if (sym_type != STT_SECTION)
7204 toff += irel->r_addend;
7205 }
7206 /* PLTREL24 addends are special. */
7207 else if (r_type != R_PPC_PLTREL24)
7208 toff += irel->r_addend;
7209
7210 /* Attempted -shared link of non-pic code loses. */
7211 if ((!bfd_link_relocatable (link_info)
7212 && tsec == bfd_und_section_ptr)
7213 || tsec->output_section == NULL
7214 || (tsec->owner != NULL
7215 && (tsec->owner->flags & BFD_PLUGIN) != 0))
7216 continue;
7217
7218 roff = irel->r_offset;
7219
7220 /* If the branch is in range, no need to do anything. */
7221 if (tsec != bfd_und_section_ptr
7222 && (!bfd_link_relocatable (link_info)
7223 /* A relocatable link may have sections moved during
7224 final link, so do not presume they remain in range. */
7225 || tsec->output_section == isec->output_section))
7226 {
7227 bfd_vma symaddr, reladdr;
7228
7229 symaddr = tsec->output_section->vma + tsec->output_offset + toff;
7230 reladdr = isec->output_section->vma + isec->output_offset + roff;
7231 if (symaddr - reladdr + max_branch_offset
7232 < 2 * max_branch_offset)
7233 continue;
7234 }
7235
7236 /* Look for an existing fixup to this address. */
7237 for (f = branch_fixups; f ; f = f->next)
7238 if (f->tsec == tsec && f->toff == toff)
7239 break;
7240
7241 if (f == NULL)
7242 {
7243 size_t size;
7244 unsigned long stub_rtype;
7245
7246 val = trampoff - roff;
7247 if (val >= max_branch_offset)
7248 /* Oh dear, we can't reach a trampoline. Don't try to add
7249 one. We'll report an error later. */
7250 continue;
7251
7252 if (bfd_link_pic (link_info))
7253 {
7254 size = 4 * ARRAY_SIZE (shared_stub_entry);
7255 insn_offset = 12;
7256 }
7257 else
7258 {
7259 size = 4 * ARRAY_SIZE (stub_entry);
7260 insn_offset = 0;
7261 }
7262 stub_rtype = R_PPC_RELAX;
7263 if (tsec == htab->plt
7264 || tsec == htab->glink)
7265 {
7266 stub_rtype = R_PPC_RELAX_PLT;
7267 if (r_type == R_PPC_PLTREL24)
7268 stub_rtype = R_PPC_RELAX_PLTREL24;
7269 }
7270
7271 /* Hijack the old relocation. Since we need two
7272 relocations for this use a "composite" reloc. */
7273 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
7274 stub_rtype);
7275 irel->r_offset = trampoff + insn_offset;
7276 if (r_type == R_PPC_PLTREL24
7277 && stub_rtype != R_PPC_RELAX_PLTREL24)
7278 irel->r_addend = 0;
7279
7280 /* Record the fixup so we don't do it again this section. */
7281 f = bfd_malloc (sizeof (*f));
7282 f->next = branch_fixups;
7283 f->tsec = tsec;
7284 f->toff = toff;
7285 f->trampoff = trampoff;
7286 branch_fixups = f;
7287
7288 trampoff += size;
7289 changes++;
7290 }
7291 else
7292 {
7293 val = f->trampoff - roff;
7294 if (val >= max_branch_offset)
7295 continue;
7296
7297 /* Nop out the reloc, since we're finalizing things here. */
7298 irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
7299 }
7300
7301 /* Get the section contents. */
7302 if (contents == NULL)
7303 {
7304 /* Get cached copy if it exists. */
7305 if (elf_section_data (isec)->this_hdr.contents != NULL)
7306 contents = elf_section_data (isec)->this_hdr.contents;
7307 /* Go get them off disk. */
7308 else if (!bfd_malloc_and_get_section (abfd, isec, &contents))
7309 goto error_return;
7310 }
7311
7312 /* Fix up the existing branch to hit the trampoline. */
7313 hit_addr = contents + roff;
7314 switch (r_type)
7315 {
7316 case R_PPC_REL24:
7317 case R_PPC_LOCAL24PC:
7318 case R_PPC_PLTREL24:
7319 t0 = bfd_get_32 (abfd, hit_addr);
7320 t0 &= ~0x3fffffc;
7321 t0 |= val & 0x3fffffc;
7322 bfd_put_32 (abfd, t0, hit_addr);
7323 break;
7324
7325 case R_PPC_REL14:
7326 case R_PPC_REL14_BRTAKEN:
7327 case R_PPC_REL14_BRNTAKEN:
7328 t0 = bfd_get_32 (abfd, hit_addr);
7329 t0 &= ~0xfffc;
7330 t0 |= val & 0xfffc;
7331 bfd_put_32 (abfd, t0, hit_addr);
7332 break;
7333 }
7334 }
7335
7336 while (branch_fixups != NULL)
7337 {
7338 struct one_branch_fixup *f = branch_fixups;
7339 branch_fixups = branch_fixups->next;
7340 free (f);
7341 }
7342 }
7343
7344 workaround_change = FALSE;
7345 newsize = trampoff;
7346 if (htab->params->ppc476_workaround
7347 && (!bfd_link_relocatable (link_info)
7348 || isec->output_section->alignment_power >= htab->params->pagesize_p2))
7349 {
7350 bfd_vma addr, end_addr;
7351 unsigned int crossings;
7352 bfd_vma pagesize = (bfd_vma) 1 << htab->params->pagesize_p2;
7353
7354 addr = isec->output_section->vma + isec->output_offset;
7355 end_addr = addr + trampoff;
7356 addr &= -pagesize;
7357 crossings = ((end_addr & -pagesize) - addr) >> htab->params->pagesize_p2;
7358 if (crossings != 0)
7359 {
7360 /* Keep space aligned, to ensure the patch code itself does
7361 not cross a page. Don't decrease size calculated on a
7362 previous pass as otherwise we might never settle on a layout. */
7363 newsize = 15 - ((end_addr - 1) & 15);
7364 newsize += crossings * 16;
7365 if (relax_info->workaround_size < newsize)
7366 {
7367 relax_info->workaround_size = newsize;
7368 workaround_change = TRUE;
7369 }
7370 /* Ensure relocate_section is called. */
7371 isec->flags |= SEC_RELOC;
7372 }
7373 newsize = trampoff + relax_info->workaround_size;
7374 }
7375
7376 if (htab->params->pic_fixup > 0)
7377 {
7378 picfixup_size -= relax_info->picfixup_size;
7379 if (picfixup_size != 0)
7380 relax_info->picfixup_size += picfixup_size;
7381 newsize += relax_info->picfixup_size;
7382 }
7383
7384 if (changes != 0 || picfixup_size != 0 || workaround_change)
7385 isec->size = newsize;
7386
7387 if (isymbuf != NULL
7388 && symtab_hdr->contents != (unsigned char *) isymbuf)
7389 {
7390 if (! link_info->keep_memory)
7391 free (isymbuf);
7392 else
7393 {
7394 /* Cache the symbols for elf_link_input_bfd. */
7395 symtab_hdr->contents = (unsigned char *) isymbuf;
7396 }
7397 }
7398
7399 if (contents != NULL
7400 && elf_section_data (isec)->this_hdr.contents != contents)
7401 {
7402 if (!changes && !link_info->keep_memory)
7403 free (contents);
7404 else
7405 {
7406 /* Cache the section contents for elf_link_input_bfd. */
7407 elf_section_data (isec)->this_hdr.contents = contents;
7408 }
7409 }
7410
7411 changes += picfixup_size;
7412 if (changes != 0)
7413 {
7414 /* Append sufficient NOP relocs so we can write out relocation
7415 information for the trampolines. */
7416 Elf_Internal_Shdr *rel_hdr;
7417 Elf_Internal_Rela *new_relocs = bfd_malloc ((changes + isec->reloc_count)
7418 * sizeof (*new_relocs));
7419 unsigned ix;
7420
7421 if (!new_relocs)
7422 goto error_return;
7423 memcpy (new_relocs, internal_relocs,
7424 isec->reloc_count * sizeof (*new_relocs));
7425 for (ix = changes; ix--;)
7426 {
7427 irel = new_relocs + ix + isec->reloc_count;
7428
7429 irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
7430 }
7431 if (internal_relocs != elf_section_data (isec)->relocs)
7432 free (internal_relocs);
7433 elf_section_data (isec)->relocs = new_relocs;
7434 isec->reloc_count += changes;
7435 rel_hdr = _bfd_elf_single_rel_hdr (isec);
7436 rel_hdr->sh_size += changes * rel_hdr->sh_entsize;
7437 }
7438 else if (internal_relocs != NULL
7439 && elf_section_data (isec)->relocs != internal_relocs)
7440 free (internal_relocs);
7441
7442 *again = changes != 0 || workaround_change;
7443 return TRUE;
7444
7445 error_return:
7446 while (branch_fixups != NULL)
7447 {
7448 struct one_branch_fixup *f = branch_fixups;
7449 branch_fixups = branch_fixups->next;
7450 free (f);
7451 }
7452 if (isymbuf != NULL && (unsigned char *) isymbuf != symtab_hdr->contents)
7453 free (isymbuf);
7454 if (contents != NULL
7455 && elf_section_data (isec)->this_hdr.contents != contents)
7456 free (contents);
7457 if (internal_relocs != NULL
7458 && elf_section_data (isec)->relocs != internal_relocs)
7459 free (internal_relocs);
7460 return FALSE;
7461 }
7462 \f
7463 /* What to do when ld finds relocations against symbols defined in
7464 discarded sections. */
7465
7466 static unsigned int
7467 ppc_elf_action_discarded (asection *sec)
7468 {
7469 if (strcmp (".fixup", sec->name) == 0)
7470 return 0;
7471
7472 if (strcmp (".got2", sec->name) == 0)
7473 return 0;
7474
7475 return _bfd_elf_default_action_discarded (sec);
7476 }
7477 \f
7478 /* Fill in the address for a pointer generated in a linker section. */
7479
7480 static bfd_vma
7481 elf_finish_pointer_linker_section (bfd *input_bfd,
7482 elf_linker_section_t *lsect,
7483 struct elf_link_hash_entry *h,
7484 bfd_vma relocation,
7485 const Elf_Internal_Rela *rel)
7486 {
7487 elf_linker_section_pointers_t *linker_section_ptr;
7488
7489 BFD_ASSERT (lsect != NULL);
7490
7491 if (h != NULL)
7492 {
7493 /* Handle global symbol. */
7494 struct ppc_elf_link_hash_entry *eh;
7495
7496 eh = (struct ppc_elf_link_hash_entry *) h;
7497 BFD_ASSERT (eh->elf.def_regular);
7498 linker_section_ptr = eh->linker_section_pointer;
7499 }
7500 else
7501 {
7502 /* Handle local symbol. */
7503 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
7504
7505 BFD_ASSERT (is_ppc_elf (input_bfd));
7506 BFD_ASSERT (elf_local_ptr_offsets (input_bfd) != NULL);
7507 linker_section_ptr = elf_local_ptr_offsets (input_bfd)[r_symndx];
7508 }
7509
7510 linker_section_ptr = elf_find_pointer_linker_section (linker_section_ptr,
7511 rel->r_addend,
7512 lsect);
7513 BFD_ASSERT (linker_section_ptr != NULL);
7514
7515 /* Offset will always be a multiple of four, so use the bottom bit
7516 as a "written" flag. */
7517 if ((linker_section_ptr->offset & 1) == 0)
7518 {
7519 bfd_put_32 (lsect->section->owner,
7520 relocation + linker_section_ptr->addend,
7521 lsect->section->contents + linker_section_ptr->offset);
7522 linker_section_ptr->offset += 1;
7523 }
7524
7525 relocation = (lsect->section->output_section->vma
7526 + lsect->section->output_offset
7527 + linker_section_ptr->offset - 1
7528 - SYM_VAL (lsect->sym));
7529
7530 #ifdef DEBUG
7531 fprintf (stderr,
7532 "Finish pointer in linker section %s, offset = %ld (0x%lx)\n",
7533 lsect->name, (long) relocation, (long) relocation);
7534 #endif
7535
7536 return relocation;
7537 }
7538
7539 #define PPC_LO(v) ((v) & 0xffff)
7540 #define PPC_HI(v) (((v) >> 16) & 0xffff)
7541 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
7542
7543 static void
7544 write_glink_stub (struct plt_entry *ent, asection *plt_sec, unsigned char *p,
7545 struct bfd_link_info *info)
7546 {
7547 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
7548 bfd *output_bfd = info->output_bfd;
7549 bfd_vma plt;
7550
7551 plt = ((ent->plt.offset & ~1)
7552 + plt_sec->output_section->vma
7553 + plt_sec->output_offset);
7554
7555 if (bfd_link_pic (info))
7556 {
7557 bfd_vma got = 0;
7558
7559 if (ent->addend >= 32768)
7560 got = (ent->addend
7561 + ent->sec->output_section->vma
7562 + ent->sec->output_offset);
7563 else if (htab->elf.hgot != NULL)
7564 got = SYM_VAL (htab->elf.hgot);
7565
7566 plt -= got;
7567
7568 if (plt + 0x8000 < 0x10000)
7569 {
7570 bfd_put_32 (output_bfd, LWZ_11_30 + PPC_LO (plt), p);
7571 p += 4;
7572 bfd_put_32 (output_bfd, MTCTR_11, p);
7573 p += 4;
7574 bfd_put_32 (output_bfd, BCTR, p);
7575 p += 4;
7576 bfd_put_32 (output_bfd, htab->params->ppc476_workaround ? BA : NOP, p);
7577 p += 4;
7578 }
7579 else
7580 {
7581 bfd_put_32 (output_bfd, ADDIS_11_30 + PPC_HA (plt), p);
7582 p += 4;
7583 bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
7584 p += 4;
7585 bfd_put_32 (output_bfd, MTCTR_11, p);
7586 p += 4;
7587 bfd_put_32 (output_bfd, BCTR, p);
7588 p += 4;
7589 }
7590 }
7591 else
7592 {
7593 bfd_put_32 (output_bfd, LIS_11 + PPC_HA (plt), p);
7594 p += 4;
7595 bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
7596 p += 4;
7597 bfd_put_32 (output_bfd, MTCTR_11, p);
7598 p += 4;
7599 bfd_put_32 (output_bfd, BCTR, p);
7600 p += 4;
7601 }
7602 }
7603
7604 /* Return true if symbol is defined statically. */
7605
7606 static bfd_boolean
7607 is_static_defined (struct elf_link_hash_entry *h)
7608 {
7609 return ((h->root.type == bfd_link_hash_defined
7610 || h->root.type == bfd_link_hash_defweak)
7611 && h->root.u.def.section != NULL
7612 && h->root.u.def.section->output_section != NULL);
7613 }
7614
7615 /* If INSN is an opcode that may be used with an @tls operand, return
7616 the transformed insn for TLS optimisation, otherwise return 0. If
7617 REG is non-zero only match an insn with RB or RA equal to REG. */
7618
7619 unsigned int
7620 _bfd_elf_ppc_at_tls_transform (unsigned int insn, unsigned int reg)
7621 {
7622 unsigned int rtra;
7623
7624 if ((insn & (0x3f << 26)) != 31 << 26)
7625 return 0;
7626
7627 if (reg == 0 || ((insn >> 11) & 0x1f) == reg)
7628 rtra = insn & ((1 << 26) - (1 << 16));
7629 else if (((insn >> 16) & 0x1f) == reg)
7630 rtra = (insn & (0x1f << 21)) | ((insn & (0x1f << 11)) << 5);
7631 else
7632 return 0;
7633
7634 if ((insn & (0x3ff << 1)) == 266 << 1)
7635 /* add -> addi. */
7636 insn = 14 << 26;
7637 else if ((insn & (0x1f << 1)) == 23 << 1
7638 && ((insn & (0x1f << 6)) < 14 << 6
7639 || ((insn & (0x1f << 6)) >= 16 << 6
7640 && (insn & (0x1f << 6)) < 24 << 6)))
7641 /* load and store indexed -> dform. */
7642 insn = (32 | ((insn >> 6) & 0x1f)) << 26;
7643 else if ((insn & (((0x1a << 5) | 0x1f) << 1)) == 21 << 1)
7644 /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
7645 insn = ((58 | ((insn >> 6) & 4)) << 26) | ((insn >> 6) & 1);
7646 else if ((insn & (((0x1f << 5) | 0x1f) << 1)) == 341 << 1)
7647 /* lwax -> lwa. */
7648 insn = (58 << 26) | 2;
7649 else
7650 return 0;
7651 insn |= rtra;
7652 return insn;
7653 }
7654
7655 /* If INSN is an opcode that may be used with an @tprel operand, return
7656 the transformed insn for an undefined weak symbol, ie. with the
7657 thread pointer REG operand removed. Otherwise return 0. */
7658
7659 unsigned int
7660 _bfd_elf_ppc_at_tprel_transform (unsigned int insn, unsigned int reg)
7661 {
7662 if ((insn & (0x1f << 16)) == reg << 16
7663 && ((insn & (0x3f << 26)) == 14u << 26 /* addi */
7664 || (insn & (0x3f << 26)) == 15u << 26 /* addis */
7665 || (insn & (0x3f << 26)) == 32u << 26 /* lwz */
7666 || (insn & (0x3f << 26)) == 34u << 26 /* lbz */
7667 || (insn & (0x3f << 26)) == 36u << 26 /* stw */
7668 || (insn & (0x3f << 26)) == 38u << 26 /* stb */
7669 || (insn & (0x3f << 26)) == 40u << 26 /* lhz */
7670 || (insn & (0x3f << 26)) == 42u << 26 /* lha */
7671 || (insn & (0x3f << 26)) == 44u << 26 /* sth */
7672 || (insn & (0x3f << 26)) == 46u << 26 /* lmw */
7673 || (insn & (0x3f << 26)) == 47u << 26 /* stmw */
7674 || (insn & (0x3f << 26)) == 48u << 26 /* lfs */
7675 || (insn & (0x3f << 26)) == 50u << 26 /* lfd */
7676 || (insn & (0x3f << 26)) == 52u << 26 /* stfs */
7677 || (insn & (0x3f << 26)) == 54u << 26 /* stfd */
7678 || ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
7679 && (insn & 3) != 1)
7680 || ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */
7681 && ((insn & 3) == 0 || (insn & 3) == 3))))
7682 {
7683 insn &= ~(0x1f << 16);
7684 }
7685 else if ((insn & (0x1f << 21)) == reg << 21
7686 && ((insn & (0x3e << 26)) == 24u << 26 /* ori, oris */
7687 || (insn & (0x3e << 26)) == 26u << 26 /* xori,xoris */
7688 || (insn & (0x3e << 26)) == 28u << 26 /* andi,andis */))
7689 {
7690 insn &= ~(0x1f << 21);
7691 insn |= (insn & (0x1f << 16)) << 5;
7692 if ((insn & (0x3e << 26)) == 26 << 26 /* xori,xoris */)
7693 insn -= 2 >> 26; /* convert to ori,oris */
7694 }
7695 else
7696 insn = 0;
7697 return insn;
7698 }
7699
7700 static bfd_boolean
7701 is_insn_ds_form (unsigned int insn)
7702 {
7703 return ((insn & (0x3f << 26)) == 58u << 26 /* ld,ldu,lwa */
7704 || (insn & (0x3f << 26)) == 62u << 26 /* std,stdu,stq */
7705 || (insn & (0x3f << 26)) == 57u << 26 /* lfdp */
7706 || (insn & (0x3f << 26)) == 61u << 26 /* stfdp */);
7707 }
7708
7709 static bfd_boolean
7710 is_insn_dq_form (unsigned int insn)
7711 {
7712 return ((insn & (0x3f << 26)) == 56u << 26 /* lq */
7713 || ((insn & (0x3f << 26)) == (61u << 26) /* lxv, stxv */
7714 && (insn & 3) == 1));
7715 }
7716
7717 /* The RELOCATE_SECTION function is called by the ELF backend linker
7718 to handle the relocations for a section.
7719
7720 The relocs are always passed as Rela structures; if the section
7721 actually uses Rel structures, the r_addend field will always be
7722 zero.
7723
7724 This function is responsible for adjust the section contents as
7725 necessary, and (if using Rela relocs and generating a
7726 relocatable output file) adjusting the reloc addend as
7727 necessary.
7728
7729 This function does not have to worry about setting the reloc
7730 address or the reloc symbol index.
7731
7732 LOCAL_SYMS is a pointer to the swapped in local symbols.
7733
7734 LOCAL_SECTIONS is an array giving the section in the input file
7735 corresponding to the st_shndx field of each local symbol.
7736
7737 The global hash table entry for the global symbols can be found
7738 via elf_sym_hashes (input_bfd).
7739
7740 When generating relocatable output, this function must handle
7741 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
7742 going to be the section symbol corresponding to the output
7743 section, which means that the addend must be adjusted
7744 accordingly. */
7745
7746 static bfd_boolean
7747 ppc_elf_relocate_section (bfd *output_bfd,
7748 struct bfd_link_info *info,
7749 bfd *input_bfd,
7750 asection *input_section,
7751 bfd_byte *contents,
7752 Elf_Internal_Rela *relocs,
7753 Elf_Internal_Sym *local_syms,
7754 asection **local_sections)
7755 {
7756 Elf_Internal_Shdr *symtab_hdr;
7757 struct elf_link_hash_entry **sym_hashes;
7758 struct ppc_elf_link_hash_table *htab;
7759 Elf_Internal_Rela *rel;
7760 Elf_Internal_Rela *wrel;
7761 Elf_Internal_Rela *relend;
7762 Elf_Internal_Rela outrel;
7763 asection *got2;
7764 bfd_vma *local_got_offsets;
7765 bfd_boolean ret = TRUE;
7766 bfd_vma d_offset = (bfd_big_endian (output_bfd) ? 2 : 0);
7767 bfd_boolean is_vxworks_tls;
7768 unsigned int picfixup_size = 0;
7769 struct ppc_elf_relax_info *relax_info = NULL;
7770
7771 #ifdef DEBUG
7772 _bfd_error_handler ("ppc_elf_relocate_section called for %B section %A, "
7773 "%ld relocations%s",
7774 input_bfd, input_section,
7775 (long) input_section->reloc_count,
7776 (bfd_link_relocatable (info)) ? " (relocatable)" : "");
7777 #endif
7778
7779 got2 = bfd_get_section_by_name (input_bfd, ".got2");
7780
7781 /* Initialize howto table if not already done. */
7782 if (!ppc_elf_howto_table[R_PPC_ADDR32])
7783 ppc_elf_howto_init ();
7784
7785 htab = ppc_elf_hash_table (info);
7786 local_got_offsets = elf_local_got_offsets (input_bfd);
7787 symtab_hdr = &elf_symtab_hdr (input_bfd);
7788 sym_hashes = elf_sym_hashes (input_bfd);
7789 /* We have to handle relocations in vxworks .tls_vars sections
7790 specially, because the dynamic loader is 'weird'. */
7791 is_vxworks_tls = (htab->is_vxworks && bfd_link_pic (info)
7792 && !strcmp (input_section->output_section->name,
7793 ".tls_vars"));
7794 if (input_section->sec_info_type == SEC_INFO_TYPE_TARGET)
7795 relax_info = elf_section_data (input_section)->sec_info;
7796 rel = wrel = relocs;
7797 relend = relocs + input_section->reloc_count;
7798 for (; rel < relend; wrel++, rel++)
7799 {
7800 enum elf_ppc_reloc_type r_type;
7801 bfd_vma addend;
7802 bfd_reloc_status_type r;
7803 Elf_Internal_Sym *sym;
7804 asection *sec;
7805 struct elf_link_hash_entry *h;
7806 const char *sym_name;
7807 reloc_howto_type *howto;
7808 unsigned long r_symndx;
7809 bfd_vma relocation;
7810 bfd_vma branch_bit, from;
7811 bfd_boolean unresolved_reloc;
7812 bfd_boolean warned;
7813 unsigned int tls_type, tls_mask, tls_gd;
7814 struct plt_entry **ifunc;
7815 struct reloc_howto_struct alt_howto;
7816
7817 again:
7818 r_type = ELF32_R_TYPE (rel->r_info);
7819 sym = NULL;
7820 sec = NULL;
7821 h = NULL;
7822 unresolved_reloc = FALSE;
7823 warned = FALSE;
7824 r_symndx = ELF32_R_SYM (rel->r_info);
7825
7826 if (r_symndx < symtab_hdr->sh_info)
7827 {
7828 sym = local_syms + r_symndx;
7829 sec = local_sections[r_symndx];
7830 sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
7831
7832 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
7833 }
7834 else
7835 {
7836 bfd_boolean ignored;
7837
7838 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
7839 r_symndx, symtab_hdr, sym_hashes,
7840 h, sec, relocation,
7841 unresolved_reloc, warned, ignored);
7842
7843 sym_name = h->root.root.string;
7844 }
7845
7846 if (sec != NULL && discarded_section (sec))
7847 {
7848 /* For relocs against symbols from removed linkonce sections,
7849 or sections discarded by a linker script, we just want the
7850 section contents zeroed. Avoid any special processing. */
7851 howto = NULL;
7852 if (r_type < R_PPC_max)
7853 howto = ppc_elf_howto_table[r_type];
7854
7855 _bfd_clear_contents (howto, input_bfd, input_section,
7856 contents + rel->r_offset);
7857 wrel->r_offset = rel->r_offset;
7858 wrel->r_info = 0;
7859 wrel->r_addend = 0;
7860
7861 /* For ld -r, remove relocations in debug sections against
7862 sections defined in discarded sections. Not done for
7863 non-debug to preserve relocs in .eh_frame which the
7864 eh_frame editing code expects to be present. */
7865 if (bfd_link_relocatable (info)
7866 && (input_section->flags & SEC_DEBUGGING))
7867 wrel--;
7868
7869 continue;
7870 }
7871
7872 if (bfd_link_relocatable (info))
7873 {
7874 if (got2 != NULL
7875 && r_type == R_PPC_PLTREL24
7876 && rel->r_addend != 0)
7877 {
7878 /* R_PPC_PLTREL24 is rather special. If non-zero, the
7879 addend specifies the GOT pointer offset within .got2. */
7880 rel->r_addend += got2->output_offset;
7881 }
7882 if (r_type != R_PPC_RELAX_PLT
7883 && r_type != R_PPC_RELAX_PLTREL24
7884 && r_type != R_PPC_RELAX)
7885 goto copy_reloc;
7886 }
7887
7888 /* TLS optimizations. Replace instruction sequences and relocs
7889 based on information we collected in tls_optimize. We edit
7890 RELOCS so that --emit-relocs will output something sensible
7891 for the final instruction stream. */
7892 tls_mask = 0;
7893 tls_gd = 0;
7894 if (h != NULL)
7895 tls_mask = ((struct ppc_elf_link_hash_entry *) h)->tls_mask;
7896 else if (local_got_offsets != NULL)
7897 {
7898 struct plt_entry **local_plt;
7899 char *lgot_masks;
7900 local_plt
7901 = (struct plt_entry **) (local_got_offsets + symtab_hdr->sh_info);
7902 lgot_masks = (char *) (local_plt + symtab_hdr->sh_info);
7903 tls_mask = lgot_masks[r_symndx];
7904 }
7905
7906 /* Ensure reloc mapping code below stays sane. */
7907 if ((R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TLSGD16 & 3)
7908 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TLSGD16_LO & 3)
7909 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TLSGD16_HI & 3)
7910 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TLSGD16_HA & 3)
7911 || (R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TPREL16 & 3)
7912 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TPREL16_LO & 3)
7913 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TPREL16_HI & 3)
7914 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TPREL16_HA & 3))
7915 abort ();
7916 switch (r_type)
7917 {
7918 default:
7919 break;
7920
7921 case R_PPC_GOT_TPREL16:
7922 case R_PPC_GOT_TPREL16_LO:
7923 if ((tls_mask & TLS_TLS) != 0
7924 && (tls_mask & TLS_TPREL) == 0)
7925 {
7926 bfd_vma insn;
7927
7928 insn = bfd_get_32 (output_bfd,
7929 contents + rel->r_offset - d_offset);
7930 insn &= 31 << 21;
7931 insn |= 0x3c020000; /* addis 0,2,0 */
7932 bfd_put_32 (output_bfd, insn,
7933 contents + rel->r_offset - d_offset);
7934 r_type = R_PPC_TPREL16_HA;
7935 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7936 }
7937 break;
7938
7939 case R_PPC_TLS:
7940 if ((tls_mask & TLS_TLS) != 0
7941 && (tls_mask & TLS_TPREL) == 0)
7942 {
7943 bfd_vma insn;
7944
7945 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
7946 insn = _bfd_elf_ppc_at_tls_transform (insn, 2);
7947 if (insn == 0)
7948 abort ();
7949 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
7950 r_type = R_PPC_TPREL16_LO;
7951 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7952
7953 /* Was PPC_TLS which sits on insn boundary, now
7954 PPC_TPREL16_LO which is at low-order half-word. */
7955 rel->r_offset += d_offset;
7956 }
7957 break;
7958
7959 case R_PPC_GOT_TLSGD16_HI:
7960 case R_PPC_GOT_TLSGD16_HA:
7961 tls_gd = TLS_TPRELGD;
7962 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
7963 goto tls_gdld_hi;
7964 break;
7965
7966 case R_PPC_GOT_TLSLD16_HI:
7967 case R_PPC_GOT_TLSLD16_HA:
7968 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
7969 {
7970 tls_gdld_hi:
7971 if ((tls_mask & tls_gd) != 0)
7972 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
7973 + R_PPC_GOT_TPREL16);
7974 else
7975 {
7976 rel->r_offset -= d_offset;
7977 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
7978 r_type = R_PPC_NONE;
7979 }
7980 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7981 }
7982 break;
7983
7984 case R_PPC_GOT_TLSGD16:
7985 case R_PPC_GOT_TLSGD16_LO:
7986 tls_gd = TLS_TPRELGD;
7987 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
7988 goto tls_ldgd_opt;
7989 break;
7990
7991 case R_PPC_GOT_TLSLD16:
7992 case R_PPC_GOT_TLSLD16_LO:
7993 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
7994 {
7995 unsigned int insn1, insn2;
7996 bfd_vma offset;
7997
7998 tls_ldgd_opt:
7999 offset = (bfd_vma) -1;
8000 /* If not using the newer R_PPC_TLSGD/LD to mark
8001 __tls_get_addr calls, we must trust that the call
8002 stays with its arg setup insns, ie. that the next
8003 reloc is the __tls_get_addr call associated with
8004 the current reloc. Edit both insns. */
8005 if (input_section->has_tls_get_addr_call
8006 && rel + 1 < relend
8007 && branch_reloc_hash_match (input_bfd, rel + 1,
8008 htab->tls_get_addr))
8009 offset = rel[1].r_offset;
8010 /* We read the low GOT_TLS insn because we need to keep
8011 the destination reg. It may be something other than
8012 the usual r3, and moved to r3 before the call by
8013 intervening code. */
8014 insn1 = bfd_get_32 (output_bfd,
8015 contents + rel->r_offset - d_offset);
8016 if ((tls_mask & tls_gd) != 0)
8017 {
8018 /* IE */
8019 insn1 &= (0x1f << 21) | (0x1f << 16);
8020 insn1 |= 32 << 26; /* lwz */
8021 if (offset != (bfd_vma) -1)
8022 {
8023 rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
8024 insn2 = 0x7c631214; /* add 3,3,2 */
8025 bfd_put_32 (output_bfd, insn2, contents + offset);
8026 }
8027 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
8028 + R_PPC_GOT_TPREL16);
8029 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
8030 }
8031 else
8032 {
8033 /* LE */
8034 insn1 &= 0x1f << 21;
8035 insn1 |= 0x3c020000; /* addis r,2,0 */
8036 if (tls_gd == 0)
8037 {
8038 /* Was an LD reloc. */
8039 for (r_symndx = 0;
8040 r_symndx < symtab_hdr->sh_info;
8041 r_symndx++)
8042 if (local_sections[r_symndx] == sec)
8043 break;
8044 if (r_symndx >= symtab_hdr->sh_info)
8045 r_symndx = STN_UNDEF;
8046 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
8047 if (r_symndx != STN_UNDEF)
8048 rel->r_addend -= (local_syms[r_symndx].st_value
8049 + sec->output_offset
8050 + sec->output_section->vma);
8051 }
8052 r_type = R_PPC_TPREL16_HA;
8053 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
8054 if (offset != (bfd_vma) -1)
8055 {
8056 rel[1].r_info = ELF32_R_INFO (r_symndx, R_PPC_TPREL16_LO);
8057 rel[1].r_offset = offset + d_offset;
8058 rel[1].r_addend = rel->r_addend;
8059 insn2 = 0x38630000; /* addi 3,3,0 */
8060 bfd_put_32 (output_bfd, insn2, contents + offset);
8061 }
8062 }
8063 bfd_put_32 (output_bfd, insn1,
8064 contents + rel->r_offset - d_offset);
8065 if (tls_gd == 0)
8066 {
8067 /* We changed the symbol on an LD reloc. Start over
8068 in order to get h, sym, sec etc. right. */
8069 goto again;
8070 }
8071 }
8072 break;
8073
8074 case R_PPC_TLSGD:
8075 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
8076 {
8077 unsigned int insn2;
8078 bfd_vma offset = rel->r_offset;
8079
8080 if ((tls_mask & TLS_TPRELGD) != 0)
8081 {
8082 /* IE */
8083 r_type = R_PPC_NONE;
8084 insn2 = 0x7c631214; /* add 3,3,2 */
8085 }
8086 else
8087 {
8088 /* LE */
8089 r_type = R_PPC_TPREL16_LO;
8090 rel->r_offset += d_offset;
8091 insn2 = 0x38630000; /* addi 3,3,0 */
8092 }
8093 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
8094 bfd_put_32 (output_bfd, insn2, contents + offset);
8095 /* Zap the reloc on the _tls_get_addr call too. */
8096 BFD_ASSERT (offset == rel[1].r_offset);
8097 rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
8098 }
8099 break;
8100
8101 case R_PPC_TLSLD:
8102 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
8103 {
8104 unsigned int insn2;
8105
8106 for (r_symndx = 0;
8107 r_symndx < symtab_hdr->sh_info;
8108 r_symndx++)
8109 if (local_sections[r_symndx] == sec)
8110 break;
8111 if (r_symndx >= symtab_hdr->sh_info)
8112 r_symndx = STN_UNDEF;
8113 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
8114 if (r_symndx != STN_UNDEF)
8115 rel->r_addend -= (local_syms[r_symndx].st_value
8116 + sec->output_offset
8117 + sec->output_section->vma);
8118
8119 rel->r_info = ELF32_R_INFO (r_symndx, R_PPC_TPREL16_LO);
8120 rel->r_offset += d_offset;
8121 insn2 = 0x38630000; /* addi 3,3,0 */
8122 bfd_put_32 (output_bfd, insn2,
8123 contents + rel->r_offset - d_offset);
8124 /* Zap the reloc on the _tls_get_addr call too. */
8125 BFD_ASSERT (rel->r_offset - d_offset == rel[1].r_offset);
8126 rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
8127 goto again;
8128 }
8129 break;
8130 }
8131
8132 /* Handle other relocations that tweak non-addend part of insn. */
8133 branch_bit = 0;
8134 switch (r_type)
8135 {
8136 default:
8137 break;
8138
8139 /* Branch taken prediction relocations. */
8140 case R_PPC_ADDR14_BRTAKEN:
8141 case R_PPC_REL14_BRTAKEN:
8142 branch_bit = BRANCH_PREDICT_BIT;
8143 /* Fall thru */
8144
8145 /* Branch not taken prediction relocations. */
8146 case R_PPC_ADDR14_BRNTAKEN:
8147 case R_PPC_REL14_BRNTAKEN:
8148 {
8149 bfd_vma insn;
8150
8151 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
8152 insn &= ~BRANCH_PREDICT_BIT;
8153 insn |= branch_bit;
8154
8155 from = (rel->r_offset
8156 + input_section->output_offset
8157 + input_section->output_section->vma);
8158
8159 /* Invert 'y' bit if not the default. */
8160 if ((bfd_signed_vma) (relocation + rel->r_addend - from) < 0)
8161 insn ^= BRANCH_PREDICT_BIT;
8162
8163 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
8164 break;
8165 }
8166 }
8167
8168 if (ELIMINATE_COPY_RELOCS
8169 && h != NULL
8170 && !h->def_regular
8171 && h->protected_def
8172 && ppc_elf_hash_entry (h)->has_addr16_ha
8173 && ppc_elf_hash_entry (h)->has_addr16_lo
8174 && htab->params->pic_fixup > 0)
8175 {
8176 /* Convert lis;addi or lis;load/store accessing a protected
8177 variable defined in a shared library to PIC. */
8178 unsigned int insn;
8179
8180 if (r_type == R_PPC_ADDR16_HA)
8181 {
8182 insn = bfd_get_32 (output_bfd,
8183 contents + rel->r_offset - d_offset);
8184 if ((insn & (0x3f << 26)) == (15u << 26)
8185 && (insn & (0x1f << 16)) == 0 /* lis */)
8186 {
8187 bfd_byte *p;
8188 bfd_vma off;
8189 bfd_vma got_addr;
8190
8191 p = (contents + input_section->size
8192 - relax_info->workaround_size
8193 - relax_info->picfixup_size
8194 + picfixup_size);
8195 off = (p - contents) - (rel->r_offset - d_offset);
8196 if (off > 0x1fffffc || (off & 3) != 0)
8197 info->callbacks->einfo
8198 (_("%P: %H: fixup branch overflow\n"),
8199 input_bfd, input_section, rel->r_offset);
8200
8201 bfd_put_32 (output_bfd, B | off,
8202 contents + rel->r_offset - d_offset);
8203 got_addr = (htab->got->output_section->vma
8204 + htab->got->output_offset
8205 + (h->got.offset & ~1));
8206 wrel->r_offset = (p - contents) + d_offset;
8207 wrel->r_info = ELF32_R_INFO (0, R_PPC_ADDR16_HA);
8208 wrel->r_addend = got_addr;
8209 insn &= ~0xffff;
8210 insn |= ((unsigned int )(got_addr + 0x8000) >> 16) & 0xffff;
8211 bfd_put_32 (output_bfd, insn, p);
8212
8213 /* Convert lis to lwz, loading address from GOT. */
8214 insn &= ~0xffff;
8215 insn ^= (32u ^ 15u) << 26;
8216 insn |= (insn & (0x1f << 21)) >> 5;
8217 insn |= got_addr & 0xffff;
8218 bfd_put_32 (output_bfd, insn, p + 4);
8219
8220 bfd_put_32 (output_bfd, B | ((-4 - off) & 0x3ffffff), p + 8);
8221 picfixup_size += 12;
8222
8223 /* Use one of the spare relocs, so --emit-relocs
8224 output is reasonable. */
8225 memmove (rel + 1, rel, (relend - rel - 1) * sizeof (*rel));
8226 wrel++, rel++;
8227 rel->r_offset = wrel[-1].r_offset + 4;
8228 rel->r_info = ELF32_R_INFO (0, R_PPC_ADDR16_LO);
8229 rel->r_addend = wrel[-1].r_addend;
8230
8231 /* Continue on as if we had a got reloc, to output
8232 dynamic reloc. */
8233 r_type = R_PPC_GOT16_LO;
8234 }
8235 else
8236 info->callbacks->einfo
8237 (_("%P: %H: error: %s with unexpected instruction %x\n"),
8238 input_bfd, input_section, rel->r_offset,
8239 "R_PPC_ADDR16_HA", insn);
8240 }
8241 else if (r_type == R_PPC_ADDR16_LO)
8242 {
8243 insn = bfd_get_32 (output_bfd,
8244 contents + rel->r_offset - d_offset);
8245 if ((insn & (0x3f << 26)) == 14u << 26 /* addi */
8246 || (insn & (0x3f << 26)) == 32u << 26 /* lwz */
8247 || (insn & (0x3f << 26)) == 34u << 26 /* lbz */
8248 || (insn & (0x3f << 26)) == 36u << 26 /* stw */
8249 || (insn & (0x3f << 26)) == 38u << 26 /* stb */
8250 || (insn & (0x3f << 26)) == 40u << 26 /* lhz */
8251 || (insn & (0x3f << 26)) == 42u << 26 /* lha */
8252 || (insn & (0x3f << 26)) == 44u << 26 /* sth */
8253 || (insn & (0x3f << 26)) == 46u << 26 /* lmw */
8254 || (insn & (0x3f << 26)) == 47u << 26 /* stmw */
8255 || (insn & (0x3f << 26)) == 48u << 26 /* lfs */
8256 || (insn & (0x3f << 26)) == 50u << 26 /* lfd */
8257 || (insn & (0x3f << 26)) == 52u << 26 /* stfs */
8258 || (insn & (0x3f << 26)) == 54u << 26 /* stfd */
8259 || ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
8260 && (insn & 3) != 1)
8261 || ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */
8262 && ((insn & 3) == 0 || (insn & 3) == 3)))
8263 {
8264 /* Arrange to apply the reloc addend, if any. */
8265 relocation = 0;
8266 unresolved_reloc = FALSE;
8267 rel->r_info = ELF32_R_INFO (0, r_type);
8268 }
8269 else
8270 info->callbacks->einfo
8271 (_("%P: %H: error: %s with unexpected instruction %x\n"),
8272 input_bfd, input_section, rel->r_offset,
8273 "R_PPC_ADDR16_LO", insn);
8274 }
8275 }
8276
8277 ifunc = NULL;
8278 if (!htab->is_vxworks)
8279 {
8280 struct plt_entry *ent;
8281
8282 if (h != NULL)
8283 {
8284 if (h->type == STT_GNU_IFUNC)
8285 ifunc = &h->plt.plist;
8286 }
8287 else if (local_got_offsets != NULL
8288 && ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
8289 {
8290 struct plt_entry **local_plt;
8291
8292 local_plt = (struct plt_entry **) (local_got_offsets
8293 + symtab_hdr->sh_info);
8294 ifunc = local_plt + r_symndx;
8295 }
8296
8297 ent = NULL;
8298 if (ifunc != NULL
8299 && (!bfd_link_pic (info)
8300 || is_branch_reloc (r_type)))
8301 {
8302 addend = 0;
8303 if (r_type == R_PPC_PLTREL24 && bfd_link_pic (info))
8304 addend = rel->r_addend;
8305 ent = find_plt_ent (ifunc, got2, addend);
8306 }
8307 if (ent != NULL)
8308 {
8309 if (h == NULL && (ent->plt.offset & 1) == 0)
8310 {
8311 Elf_Internal_Rela rela;
8312 bfd_byte *loc;
8313
8314 rela.r_offset = (htab->iplt->output_section->vma
8315 + htab->iplt->output_offset
8316 + ent->plt.offset);
8317 rela.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
8318 rela.r_addend = relocation;
8319 loc = htab->reliplt->contents;
8320 loc += (htab->reliplt->reloc_count++
8321 * sizeof (Elf32_External_Rela));
8322 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
8323
8324 ent->plt.offset |= 1;
8325 }
8326 if (h == NULL && (ent->glink_offset & 1) == 0)
8327 {
8328 unsigned char *p = ((unsigned char *) htab->glink->contents
8329 + ent->glink_offset);
8330 write_glink_stub (ent, htab->iplt, p, info);
8331 ent->glink_offset |= 1;
8332 }
8333
8334 unresolved_reloc = FALSE;
8335 if (htab->plt_type == PLT_NEW
8336 || !htab->elf.dynamic_sections_created
8337 || h == NULL
8338 || h->dynindx == -1)
8339 relocation = (htab->glink->output_section->vma
8340 + htab->glink->output_offset
8341 + (ent->glink_offset & ~1));
8342 else
8343 relocation = (htab->plt->output_section->vma
8344 + htab->plt->output_offset
8345 + ent->plt.offset);
8346 }
8347 }
8348
8349 addend = rel->r_addend;
8350 tls_type = 0;
8351 howto = NULL;
8352 if (r_type < R_PPC_max)
8353 howto = ppc_elf_howto_table[r_type];
8354 switch (r_type)
8355 {
8356 default:
8357 info->callbacks->einfo
8358 (_("%P: %B: unknown relocation type %d for symbol %s\n"),
8359 input_bfd, (int) r_type, sym_name);
8360
8361 bfd_set_error (bfd_error_bad_value);
8362 ret = FALSE;
8363 goto copy_reloc;
8364
8365 case R_PPC_NONE:
8366 case R_PPC_TLS:
8367 case R_PPC_TLSGD:
8368 case R_PPC_TLSLD:
8369 case R_PPC_EMB_MRKREF:
8370 case R_PPC_GNU_VTINHERIT:
8371 case R_PPC_GNU_VTENTRY:
8372 goto copy_reloc;
8373
8374 /* GOT16 relocations. Like an ADDR16 using the symbol's
8375 address in the GOT as relocation value instead of the
8376 symbol's value itself. Also, create a GOT entry for the
8377 symbol and put the symbol value there. */
8378 case R_PPC_GOT_TLSGD16:
8379 case R_PPC_GOT_TLSGD16_LO:
8380 case R_PPC_GOT_TLSGD16_HI:
8381 case R_PPC_GOT_TLSGD16_HA:
8382 tls_type = TLS_TLS | TLS_GD;
8383 goto dogot;
8384
8385 case R_PPC_GOT_TLSLD16:
8386 case R_PPC_GOT_TLSLD16_LO:
8387 case R_PPC_GOT_TLSLD16_HI:
8388 case R_PPC_GOT_TLSLD16_HA:
8389 tls_type = TLS_TLS | TLS_LD;
8390 goto dogot;
8391
8392 case R_PPC_GOT_TPREL16:
8393 case R_PPC_GOT_TPREL16_LO:
8394 case R_PPC_GOT_TPREL16_HI:
8395 case R_PPC_GOT_TPREL16_HA:
8396 tls_type = TLS_TLS | TLS_TPREL;
8397 goto dogot;
8398
8399 case R_PPC_GOT_DTPREL16:
8400 case R_PPC_GOT_DTPREL16_LO:
8401 case R_PPC_GOT_DTPREL16_HI:
8402 case R_PPC_GOT_DTPREL16_HA:
8403 tls_type = TLS_TLS | TLS_DTPREL;
8404 goto dogot;
8405
8406 case R_PPC_GOT16:
8407 case R_PPC_GOT16_LO:
8408 case R_PPC_GOT16_HI:
8409 case R_PPC_GOT16_HA:
8410 tls_mask = 0;
8411 dogot:
8412 {
8413 /* Relocation is to the entry for this symbol in the global
8414 offset table. */
8415 bfd_vma off;
8416 bfd_vma *offp;
8417 unsigned long indx;
8418
8419 if (htab->got == NULL)
8420 abort ();
8421
8422 indx = 0;
8423 if (tls_type == (TLS_TLS | TLS_LD)
8424 && (h == NULL
8425 || !h->def_dynamic))
8426 offp = &htab->tlsld_got.offset;
8427 else if (h != NULL)
8428 {
8429 bfd_boolean dyn;
8430 dyn = htab->elf.dynamic_sections_created;
8431 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, bfd_link_pic (info), h)
8432 || (bfd_link_pic (info)
8433 && SYMBOL_REFERENCES_LOCAL (info, h)))
8434 /* This is actually a static link, or it is a
8435 -Bsymbolic link and the symbol is defined
8436 locally, or the symbol was forced to be local
8437 because of a version file. */
8438 ;
8439 else
8440 {
8441 BFD_ASSERT (h->dynindx != -1);
8442 indx = h->dynindx;
8443 unresolved_reloc = FALSE;
8444 }
8445 offp = &h->got.offset;
8446 }
8447 else
8448 {
8449 if (local_got_offsets == NULL)
8450 abort ();
8451 offp = &local_got_offsets[r_symndx];
8452 }
8453
8454 /* The offset must always be a multiple of 4. We use the
8455 least significant bit to record whether we have already
8456 processed this entry. */
8457 off = *offp;
8458 if ((off & 1) != 0)
8459 off &= ~1;
8460 else
8461 {
8462 unsigned int tls_m = (tls_mask
8463 & (TLS_LD | TLS_GD | TLS_DTPREL
8464 | TLS_TPREL | TLS_TPRELGD));
8465
8466 if (offp == &htab->tlsld_got.offset)
8467 tls_m = TLS_LD;
8468 else if (h == NULL
8469 || !h->def_dynamic)
8470 tls_m &= ~TLS_LD;
8471
8472 /* We might have multiple got entries for this sym.
8473 Initialize them all. */
8474 do
8475 {
8476 int tls_ty = 0;
8477
8478 if ((tls_m & TLS_LD) != 0)
8479 {
8480 tls_ty = TLS_TLS | TLS_LD;
8481 tls_m &= ~TLS_LD;
8482 }
8483 else if ((tls_m & TLS_GD) != 0)
8484 {
8485 tls_ty = TLS_TLS | TLS_GD;
8486 tls_m &= ~TLS_GD;
8487 }
8488 else if ((tls_m & TLS_DTPREL) != 0)
8489 {
8490 tls_ty = TLS_TLS | TLS_DTPREL;
8491 tls_m &= ~TLS_DTPREL;
8492 }
8493 else if ((tls_m & (TLS_TPREL | TLS_TPRELGD)) != 0)
8494 {
8495 tls_ty = TLS_TLS | TLS_TPREL;
8496 tls_m = 0;
8497 }
8498
8499 /* Generate relocs for the dynamic linker. */
8500 if ((bfd_link_pic (info) || indx != 0)
8501 && (offp == &htab->tlsld_got.offset
8502 || h == NULL
8503 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
8504 || h->root.type != bfd_link_hash_undefweak))
8505 {
8506 asection *rsec = htab->relgot;
8507 bfd_byte * loc;
8508
8509 if (ifunc != NULL)
8510 rsec = htab->reliplt;
8511 outrel.r_offset = (htab->got->output_section->vma
8512 + htab->got->output_offset
8513 + off);
8514 outrel.r_addend = 0;
8515 if (tls_ty & (TLS_LD | TLS_GD))
8516 {
8517 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPMOD32);
8518 if (tls_ty == (TLS_TLS | TLS_GD))
8519 {
8520 loc = rsec->contents;
8521 loc += (rsec->reloc_count++
8522 * sizeof (Elf32_External_Rela));
8523 bfd_elf32_swap_reloca_out (output_bfd,
8524 &outrel, loc);
8525 outrel.r_offset += 4;
8526 outrel.r_info
8527 = ELF32_R_INFO (indx, R_PPC_DTPREL32);
8528 }
8529 }
8530 else if (tls_ty == (TLS_TLS | TLS_DTPREL))
8531 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPREL32);
8532 else if (tls_ty == (TLS_TLS | TLS_TPREL))
8533 outrel.r_info = ELF32_R_INFO (indx, R_PPC_TPREL32);
8534 else if (indx != 0)
8535 outrel.r_info = ELF32_R_INFO (indx, R_PPC_GLOB_DAT);
8536 else if (ifunc != NULL)
8537 outrel.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
8538 else
8539 outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
8540 if (indx == 0 && tls_ty != (TLS_TLS | TLS_LD))
8541 {
8542 outrel.r_addend += relocation;
8543 if (tls_ty & (TLS_GD | TLS_DTPREL | TLS_TPREL))
8544 {
8545 if (htab->elf.tls_sec == NULL)
8546 outrel.r_addend = 0;
8547 else
8548 outrel.r_addend -= htab->elf.tls_sec->vma;
8549 }
8550 }
8551 loc = rsec->contents;
8552 loc += (rsec->reloc_count++
8553 * sizeof (Elf32_External_Rela));
8554 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
8555 }
8556
8557 /* Init the .got section contents if we're not
8558 emitting a reloc. */
8559 else
8560 {
8561 bfd_vma value = relocation;
8562
8563 if (tls_ty == (TLS_TLS | TLS_LD))
8564 value = 1;
8565 else if (tls_ty != 0)
8566 {
8567 if (htab->elf.tls_sec == NULL)
8568 value = 0;
8569 else
8570 {
8571 value -= htab->elf.tls_sec->vma + DTP_OFFSET;
8572 if (tls_ty == (TLS_TLS | TLS_TPREL))
8573 value += DTP_OFFSET - TP_OFFSET;
8574 }
8575
8576 if (tls_ty == (TLS_TLS | TLS_GD))
8577 {
8578 bfd_put_32 (output_bfd, value,
8579 htab->got->contents + off + 4);
8580 value = 1;
8581 }
8582 }
8583 bfd_put_32 (output_bfd, value,
8584 htab->got->contents + off);
8585 }
8586
8587 off += 4;
8588 if (tls_ty & (TLS_LD | TLS_GD))
8589 off += 4;
8590 }
8591 while (tls_m != 0);
8592
8593 off = *offp;
8594 *offp = off | 1;
8595 }
8596
8597 if (off >= (bfd_vma) -2)
8598 abort ();
8599
8600 if ((tls_type & TLS_TLS) != 0)
8601 {
8602 if (tls_type != (TLS_TLS | TLS_LD))
8603 {
8604 if ((tls_mask & TLS_LD) != 0
8605 && !(h == NULL
8606 || !h->def_dynamic))
8607 off += 8;
8608 if (tls_type != (TLS_TLS | TLS_GD))
8609 {
8610 if ((tls_mask & TLS_GD) != 0)
8611 off += 8;
8612 if (tls_type != (TLS_TLS | TLS_DTPREL))
8613 {
8614 if ((tls_mask & TLS_DTPREL) != 0)
8615 off += 4;
8616 }
8617 }
8618 }
8619 }
8620
8621 /* If here for a picfixup, we're done. */
8622 if (r_type != ELF32_R_TYPE (rel->r_info))
8623 goto copy_reloc;
8624
8625 relocation = (htab->got->output_section->vma
8626 + htab->got->output_offset
8627 + off
8628 - SYM_VAL (htab->elf.hgot));
8629
8630 /* Addends on got relocations don't make much sense.
8631 x+off@got is actually x@got+off, and since the got is
8632 generated by a hash table traversal, the value in the
8633 got at entry m+n bears little relation to the entry m. */
8634 if (addend != 0)
8635 info->callbacks->einfo
8636 (_("%P: %H: non-zero addend on %s reloc against `%s'\n"),
8637 input_bfd, input_section, rel->r_offset,
8638 howto->name,
8639 sym_name);
8640 }
8641 break;
8642
8643 /* Relocations that need no special processing. */
8644 case R_PPC_LOCAL24PC:
8645 /* It makes no sense to point a local relocation
8646 at a symbol not in this object. */
8647 if (unresolved_reloc)
8648 {
8649 (*info->callbacks->undefined_symbol) (info,
8650 h->root.root.string,
8651 input_bfd,
8652 input_section,
8653 rel->r_offset,
8654 TRUE);
8655 goto copy_reloc;
8656 }
8657 break;
8658
8659 case R_PPC_DTPREL16:
8660 case R_PPC_DTPREL16_LO:
8661 case R_PPC_DTPREL16_HI:
8662 case R_PPC_DTPREL16_HA:
8663 if (htab->elf.tls_sec != NULL)
8664 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
8665 break;
8666
8667 /* Relocations that may need to be propagated if this is a shared
8668 object. */
8669 case R_PPC_TPREL16:
8670 case R_PPC_TPREL16_LO:
8671 case R_PPC_TPREL16_HI:
8672 case R_PPC_TPREL16_HA:
8673 if (h != NULL
8674 && h->root.type == bfd_link_hash_undefweak
8675 && h->dynindx == -1)
8676 {
8677 /* Make this relocation against an undefined weak symbol
8678 resolve to zero. This is really just a tweak, since
8679 code using weak externs ought to check that they are
8680 defined before using them. */
8681 bfd_byte *p = contents + rel->r_offset - d_offset;
8682 unsigned int insn = bfd_get_32 (output_bfd, p);
8683 insn = _bfd_elf_ppc_at_tprel_transform (insn, 2);
8684 if (insn != 0)
8685 bfd_put_32 (output_bfd, insn, p);
8686 break;
8687 }
8688 if (htab->elf.tls_sec != NULL)
8689 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
8690 /* The TPREL16 relocs shouldn't really be used in shared
8691 libs as they will result in DT_TEXTREL being set, but
8692 support them anyway. */
8693 goto dodyn;
8694
8695 case R_PPC_TPREL32:
8696 if (htab->elf.tls_sec != NULL)
8697 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
8698 goto dodyn;
8699
8700 case R_PPC_DTPREL32:
8701 if (htab->elf.tls_sec != NULL)
8702 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
8703 goto dodyn;
8704
8705 case R_PPC_DTPMOD32:
8706 relocation = 1;
8707 addend = 0;
8708 goto dodyn;
8709
8710 case R_PPC_REL16:
8711 case R_PPC_REL16_LO:
8712 case R_PPC_REL16_HI:
8713 case R_PPC_REL16_HA:
8714 case R_PPC_REL16DX_HA:
8715 break;
8716
8717 case R_PPC_REL32:
8718 if (h == NULL || h == htab->elf.hgot)
8719 break;
8720 /* fall through */
8721
8722 case R_PPC_ADDR32:
8723 case R_PPC_ADDR16:
8724 case R_PPC_ADDR16_LO:
8725 case R_PPC_ADDR16_HI:
8726 case R_PPC_ADDR16_HA:
8727 case R_PPC_UADDR32:
8728 case R_PPC_UADDR16:
8729 goto dodyn;
8730
8731 case R_PPC_VLE_REL8:
8732 case R_PPC_VLE_REL15:
8733 case R_PPC_VLE_REL24:
8734 case R_PPC_REL24:
8735 case R_PPC_REL14:
8736 case R_PPC_REL14_BRTAKEN:
8737 case R_PPC_REL14_BRNTAKEN:
8738 /* If these relocations are not to a named symbol, they can be
8739 handled right here, no need to bother the dynamic linker. */
8740 if (SYMBOL_CALLS_LOCAL (info, h)
8741 || h == htab->elf.hgot)
8742 break;
8743 /* fall through */
8744
8745 case R_PPC_ADDR24:
8746 case R_PPC_ADDR14:
8747 case R_PPC_ADDR14_BRTAKEN:
8748 case R_PPC_ADDR14_BRNTAKEN:
8749 if (h != NULL && !bfd_link_pic (info))
8750 break;
8751 /* fall through */
8752
8753 dodyn:
8754 if ((input_section->flags & SEC_ALLOC) == 0
8755 || is_vxworks_tls)
8756 break;
8757
8758 if ((bfd_link_pic (info)
8759 && !(h != NULL
8760 && ((h->root.type == bfd_link_hash_undefined
8761 && (ELF_ST_VISIBILITY (h->other) == STV_HIDDEN
8762 || ELF_ST_VISIBILITY (h->other) == STV_INTERNAL))
8763 || (h->root.type == bfd_link_hash_undefweak
8764 && ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)))
8765 && (must_be_dyn_reloc (info, r_type)
8766 || !SYMBOL_CALLS_LOCAL (info, h)))
8767 || (ELIMINATE_COPY_RELOCS
8768 && !bfd_link_pic (info)
8769 && h != NULL
8770 && h->dynindx != -1
8771 && !h->non_got_ref
8772 && !h->def_regular
8773 && !(h->protected_def
8774 && ppc_elf_hash_entry (h)->has_addr16_ha
8775 && ppc_elf_hash_entry (h)->has_addr16_lo
8776 && htab->params->pic_fixup > 0)))
8777 {
8778 int skip;
8779 bfd_byte *loc;
8780 asection *sreloc;
8781 #ifdef DEBUG
8782 fprintf (stderr, "ppc_elf_relocate_section needs to "
8783 "create relocation for %s\n",
8784 (h && h->root.root.string
8785 ? h->root.root.string : "<unknown>"));
8786 #endif
8787
8788 /* When generating a shared object, these relocations
8789 are copied into the output file to be resolved at run
8790 time. */
8791 sreloc = elf_section_data (input_section)->sreloc;
8792 if (ifunc)
8793 sreloc = htab->reliplt;
8794 if (sreloc == NULL)
8795 return FALSE;
8796
8797 skip = 0;
8798 outrel.r_offset = _bfd_elf_section_offset (output_bfd, info,
8799 input_section,
8800 rel->r_offset);
8801 if (outrel.r_offset == (bfd_vma) -1
8802 || outrel.r_offset == (bfd_vma) -2)
8803 skip = (int) outrel.r_offset;
8804 outrel.r_offset += (input_section->output_section->vma
8805 + input_section->output_offset);
8806
8807 if (skip)
8808 memset (&outrel, 0, sizeof outrel);
8809 else if ((h != NULL
8810 && (h->root.type == bfd_link_hash_undefined
8811 || h->root.type == bfd_link_hash_undefweak))
8812 || !SYMBOL_REFERENCES_LOCAL (info, h))
8813 {
8814 BFD_ASSERT (h->dynindx != -1);
8815 unresolved_reloc = FALSE;
8816 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
8817 outrel.r_addend = rel->r_addend;
8818 }
8819 else
8820 {
8821 outrel.r_addend = relocation + rel->r_addend;
8822
8823 if (r_type != R_PPC_ADDR32)
8824 {
8825 long indx = 0;
8826
8827 if (ifunc != NULL)
8828 {
8829 /* If we get here when building a static
8830 executable, then the libc startup function
8831 responsible for applying indirect function
8832 relocations is going to complain about
8833 the reloc type.
8834 If we get here when building a dynamic
8835 executable, it will be because we have
8836 a text relocation. The dynamic loader
8837 will set the text segment writable and
8838 non-executable to apply text relocations.
8839 So we'll segfault when trying to run the
8840 indirection function to resolve the reloc. */
8841 info->callbacks->einfo
8842 (_("%P: %H: relocation %s for indirect "
8843 "function %s unsupported\n"),
8844 input_bfd, input_section, rel->r_offset,
8845 howto->name,
8846 sym_name);
8847 ret = FALSE;
8848 }
8849 else if (r_symndx == STN_UNDEF || bfd_is_abs_section (sec))
8850 ;
8851 else if (sec == NULL || sec->owner == NULL)
8852 {
8853 bfd_set_error (bfd_error_bad_value);
8854 ret = FALSE;
8855 }
8856 else
8857 {
8858 asection *osec;
8859
8860 /* We are turning this relocation into one
8861 against a section symbol. It would be
8862 proper to subtract the symbol's value,
8863 osec->vma, from the emitted reloc addend,
8864 but ld.so expects buggy relocs.
8865 FIXME: Why not always use a zero index? */
8866 osec = sec->output_section;
8867 indx = elf_section_data (osec)->dynindx;
8868 if (indx == 0)
8869 {
8870 osec = htab->elf.text_index_section;
8871 indx = elf_section_data (osec)->dynindx;
8872 }
8873 BFD_ASSERT (indx != 0);
8874 #ifdef DEBUG
8875 if (indx == 0)
8876 printf ("indx=%ld section=%s flags=%08x name=%s\n",
8877 indx, osec->name, osec->flags,
8878 h->root.root.string);
8879 #endif
8880 }
8881
8882 outrel.r_info = ELF32_R_INFO (indx, r_type);
8883 }
8884 else if (ifunc != NULL)
8885 outrel.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
8886 else
8887 outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
8888 }
8889
8890 loc = sreloc->contents;
8891 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
8892 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
8893
8894 if (skip == -1)
8895 goto copy_reloc;
8896
8897 /* This reloc will be computed at runtime. We clear the memory
8898 so that it contains predictable value. */
8899 if (! skip
8900 && ((input_section->flags & SEC_ALLOC) != 0
8901 || ELF32_R_TYPE (outrel.r_info) != R_PPC_RELATIVE))
8902 {
8903 relocation = howto->pc_relative ? outrel.r_offset : 0;
8904 addend = 0;
8905 break;
8906 }
8907 }
8908 break;
8909
8910 case R_PPC_RELAX_PLT:
8911 case R_PPC_RELAX_PLTREL24:
8912 if (h != NULL)
8913 {
8914 struct plt_entry *ent;
8915 bfd_vma got2_addend = 0;
8916
8917 if (r_type == R_PPC_RELAX_PLTREL24)
8918 {
8919 if (bfd_link_pic (info))
8920 got2_addend = addend;
8921 addend = 0;
8922 }
8923 ent = find_plt_ent (&h->plt.plist, got2, got2_addend);
8924 if (htab->plt_type == PLT_NEW)
8925 relocation = (htab->glink->output_section->vma
8926 + htab->glink->output_offset
8927 + ent->glink_offset);
8928 else
8929 relocation = (htab->plt->output_section->vma
8930 + htab->plt->output_offset
8931 + ent->plt.offset);
8932 }
8933 /* Fall thru */
8934
8935 case R_PPC_RELAX:
8936 {
8937 const int *stub;
8938 size_t size;
8939 size_t insn_offset = rel->r_offset;
8940 unsigned int insn;
8941
8942 if (bfd_link_pic (info))
8943 {
8944 relocation -= (input_section->output_section->vma
8945 + input_section->output_offset
8946 + rel->r_offset - 4);
8947 stub = shared_stub_entry;
8948 bfd_put_32 (output_bfd, stub[0], contents + insn_offset - 12);
8949 bfd_put_32 (output_bfd, stub[1], contents + insn_offset - 8);
8950 bfd_put_32 (output_bfd, stub[2], contents + insn_offset - 4);
8951 stub += 3;
8952 size = ARRAY_SIZE (shared_stub_entry) - 3;
8953 }
8954 else
8955 {
8956 stub = stub_entry;
8957 size = ARRAY_SIZE (stub_entry);
8958 }
8959
8960 relocation += addend;
8961 if (bfd_link_relocatable (info))
8962 relocation = 0;
8963
8964 /* First insn is HA, second is LO. */
8965 insn = *stub++;
8966 insn |= ((relocation + 0x8000) >> 16) & 0xffff;
8967 bfd_put_32 (output_bfd, insn, contents + insn_offset);
8968 insn_offset += 4;
8969
8970 insn = *stub++;
8971 insn |= relocation & 0xffff;
8972 bfd_put_32 (output_bfd, insn, contents + insn_offset);
8973 insn_offset += 4;
8974 size -= 2;
8975
8976 while (size != 0)
8977 {
8978 insn = *stub++;
8979 --size;
8980 bfd_put_32 (output_bfd, insn, contents + insn_offset);
8981 insn_offset += 4;
8982 }
8983
8984 /* Rewrite the reloc and convert one of the trailing nop
8985 relocs to describe this relocation. */
8986 BFD_ASSERT (ELF32_R_TYPE (relend[-1].r_info) == R_PPC_NONE);
8987 /* The relocs are at the bottom 2 bytes */
8988 wrel->r_offset = rel->r_offset + d_offset;
8989 wrel->r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_HA);
8990 wrel->r_addend = rel->r_addend;
8991 memmove (wrel + 1, wrel, (relend - wrel - 1) * sizeof (*wrel));
8992 wrel++, rel++;
8993 wrel->r_offset += 4;
8994 wrel->r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_LO);
8995 }
8996 continue;
8997
8998 /* Indirect .sdata relocation. */
8999 case R_PPC_EMB_SDAI16:
9000 BFD_ASSERT (htab->sdata[0].section != NULL);
9001 if (!is_static_defined (htab->sdata[0].sym))
9002 {
9003 unresolved_reloc = TRUE;
9004 break;
9005 }
9006 relocation
9007 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[0],
9008 h, relocation, rel);
9009 addend = 0;
9010 break;
9011
9012 /* Indirect .sdata2 relocation. */
9013 case R_PPC_EMB_SDA2I16:
9014 BFD_ASSERT (htab->sdata[1].section != NULL);
9015 if (!is_static_defined (htab->sdata[1].sym))
9016 {
9017 unresolved_reloc = TRUE;
9018 break;
9019 }
9020 relocation
9021 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[1],
9022 h, relocation, rel);
9023 addend = 0;
9024 break;
9025
9026 /* Handle the TOC16 reloc. We want to use the offset within the .got
9027 section, not the actual VMA. This is appropriate when generating
9028 an embedded ELF object, for which the .got section acts like the
9029 AIX .toc section. */
9030 case R_PPC_TOC16: /* phony GOT16 relocations */
9031 if (sec == NULL || sec->output_section == NULL)
9032 {
9033 unresolved_reloc = TRUE;
9034 break;
9035 }
9036 BFD_ASSERT (strcmp (bfd_get_section_name (sec->owner, sec),
9037 ".got") == 0
9038 || strcmp (bfd_get_section_name (sec->owner, sec),
9039 ".cgot") == 0);
9040
9041 addend -= sec->output_section->vma + sec->output_offset + 0x8000;
9042 break;
9043
9044 case R_PPC_PLTREL24:
9045 if (h != NULL && ifunc == NULL)
9046 {
9047 struct plt_entry *ent;
9048
9049 ent = find_plt_ent (&h->plt.plist, got2,
9050 bfd_link_pic (info) ? addend : 0);
9051 if (ent == NULL
9052 || htab->plt == NULL)
9053 {
9054 /* We didn't make a PLT entry for this symbol. This
9055 happens when statically linking PIC code, or when
9056 using -Bsymbolic. */
9057 }
9058 else
9059 {
9060 /* Relocation is to the entry for this symbol in the
9061 procedure linkage table. */
9062 unresolved_reloc = FALSE;
9063 if (htab->plt_type == PLT_NEW)
9064 relocation = (htab->glink->output_section->vma
9065 + htab->glink->output_offset
9066 + ent->glink_offset);
9067 else
9068 relocation = (htab->plt->output_section->vma
9069 + htab->plt->output_offset
9070 + ent->plt.offset);
9071 }
9072 }
9073
9074 /* R_PPC_PLTREL24 is rather special. If non-zero, the
9075 addend specifies the GOT pointer offset within .got2.
9076 Don't apply it to the relocation field. */
9077 addend = 0;
9078 break;
9079
9080 /* Relocate against _SDA_BASE_. */
9081 case R_PPC_SDAREL16:
9082 {
9083 const char *name;
9084 struct elf_link_hash_entry *sda = htab->sdata[0].sym;
9085
9086 if (sec == NULL
9087 || sec->output_section == NULL
9088 || !is_static_defined (sda))
9089 {
9090 unresolved_reloc = TRUE;
9091 break;
9092 }
9093 addend -= SYM_VAL (sda);
9094
9095 name = bfd_get_section_name (output_bfd, sec->output_section);
9096 if (!(strcmp (name, ".sdata") == 0
9097 || strcmp (name, ".sbss") == 0))
9098 {
9099 info->callbacks->einfo
9100 (_("%P: %B: the target (%s) of a %s relocation is "
9101 "in the wrong output section (%s)\n"),
9102 input_bfd,
9103 sym_name,
9104 howto->name,
9105 name);
9106 }
9107 }
9108 break;
9109
9110 /* Relocate against _SDA2_BASE_. */
9111 case R_PPC_EMB_SDA2REL:
9112 {
9113 const char *name;
9114 struct elf_link_hash_entry *sda = htab->sdata[1].sym;
9115
9116 if (sec == NULL
9117 || sec->output_section == NULL
9118 || !is_static_defined (sda))
9119 {
9120 unresolved_reloc = TRUE;
9121 break;
9122 }
9123 addend -= SYM_VAL (sda);
9124
9125 name = bfd_get_section_name (output_bfd, sec->output_section);
9126 if (!(strcmp (name, ".sdata2") == 0
9127 || strcmp (name, ".sbss2") == 0))
9128 {
9129 info->callbacks->einfo
9130 (_("%P: %B: the target (%s) of a %s relocation is "
9131 "in the wrong output section (%s)\n"),
9132 input_bfd,
9133 sym_name,
9134 howto->name,
9135 name);
9136 }
9137 }
9138 break;
9139
9140 case R_PPC_VLE_LO16A:
9141 relocation = relocation + addend;
9142 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9143 relocation, split16a_type);
9144 goto copy_reloc;
9145
9146 case R_PPC_VLE_LO16D:
9147 relocation = relocation + addend;
9148 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9149 relocation, split16d_type);
9150 goto copy_reloc;
9151
9152 case R_PPC_VLE_HI16A:
9153 relocation = (relocation + addend) >> 16;
9154 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9155 relocation, split16a_type);
9156 goto copy_reloc;
9157
9158 case R_PPC_VLE_HI16D:
9159 relocation = (relocation + addend) >> 16;
9160 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9161 relocation, split16d_type);
9162 goto copy_reloc;
9163
9164 case R_PPC_VLE_HA16A:
9165 relocation = (relocation + addend + 0x8000) >> 16;
9166 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9167 relocation, split16a_type);
9168 goto copy_reloc;
9169
9170 case R_PPC_VLE_HA16D:
9171 relocation = (relocation + addend + 0x8000) >> 16;
9172 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9173 relocation, split16d_type);
9174 goto copy_reloc;
9175
9176 /* Relocate against either _SDA_BASE_, _SDA2_BASE_, or 0. */
9177 case R_PPC_EMB_SDA21:
9178 case R_PPC_VLE_SDA21:
9179 case R_PPC_EMB_RELSDA:
9180 case R_PPC_VLE_SDA21_LO:
9181 {
9182 const char *name;
9183 int reg;
9184 unsigned int insn;
9185 struct elf_link_hash_entry *sda = NULL;
9186
9187 if (sec == NULL || sec->output_section == NULL)
9188 {
9189 unresolved_reloc = TRUE;
9190 break;
9191 }
9192
9193 name = bfd_get_section_name (output_bfd, sec->output_section);
9194 if (strcmp (name, ".sdata") == 0
9195 || strcmp (name, ".sbss") == 0)
9196 {
9197 reg = 13;
9198 sda = htab->sdata[0].sym;
9199 }
9200 else if (strcmp (name, ".sdata2") == 0
9201 || strcmp (name, ".sbss2") == 0)
9202 {
9203 reg = 2;
9204 sda = htab->sdata[1].sym;
9205 }
9206 else if (strcmp (name, ".PPC.EMB.sdata0") == 0
9207 || strcmp (name, ".PPC.EMB.sbss0") == 0)
9208 {
9209 reg = 0;
9210 }
9211 else
9212 {
9213 info->callbacks->einfo
9214 (_("%P: %B: the target (%s) of a %s relocation is "
9215 "in the wrong output section (%s)\n"),
9216 input_bfd,
9217 sym_name,
9218 howto->name,
9219 name);
9220
9221 bfd_set_error (bfd_error_bad_value);
9222 ret = FALSE;
9223 goto copy_reloc;
9224 }
9225
9226 if (sda != NULL)
9227 {
9228 if (!is_static_defined (sda))
9229 {
9230 unresolved_reloc = TRUE;
9231 break;
9232 }
9233 addend -= SYM_VAL (sda);
9234 }
9235
9236 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
9237 if (reg == 0
9238 && (r_type == R_PPC_VLE_SDA21
9239 || r_type == R_PPC_VLE_SDA21_LO))
9240 {
9241 relocation = relocation + addend;
9242 addend = 0;
9243
9244 /* Force e_li insn, keeping RT from original insn. */
9245 insn &= 0x1f << 21;
9246 insn |= 28u << 26;
9247
9248 /* We have an li20 field, bits 17..20, 11..15, 21..31. */
9249 /* Top 4 bits of value to 17..20. */
9250 insn |= (relocation & 0xf0000) >> 5;
9251 /* Next 5 bits of the value to 11..15. */
9252 insn |= (relocation & 0xf800) << 5;
9253 /* And the final 11 bits of the value to bits 21 to 31. */
9254 insn |= relocation & 0x7ff;
9255
9256 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
9257
9258 if (r_type == R_PPC_VLE_SDA21
9259 && ((relocation + 0x80000) & 0xffffffff) > 0x100000)
9260 goto overflow;
9261 goto copy_reloc;
9262 }
9263 else if (r_type == R_PPC_EMB_SDA21
9264 || r_type == R_PPC_VLE_SDA21
9265 || r_type == R_PPC_VLE_SDA21_LO)
9266 {
9267 /* Fill in register field. */
9268 insn = (insn & ~RA_REGISTER_MASK) | (reg << RA_REGISTER_SHIFT);
9269 }
9270 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
9271 }
9272 break;
9273
9274 case R_PPC_VLE_SDAREL_LO16A:
9275 case R_PPC_VLE_SDAREL_LO16D:
9276 case R_PPC_VLE_SDAREL_HI16A:
9277 case R_PPC_VLE_SDAREL_HI16D:
9278 case R_PPC_VLE_SDAREL_HA16A:
9279 case R_PPC_VLE_SDAREL_HA16D:
9280 {
9281 bfd_vma value;
9282 const char *name;
9283 //int reg;
9284 struct elf_link_hash_entry *sda = NULL;
9285
9286 if (sec == NULL || sec->output_section == NULL)
9287 {
9288 unresolved_reloc = TRUE;
9289 break;
9290 }
9291
9292 name = bfd_get_section_name (output_bfd, sec->output_section);
9293 if (strcmp (name, ".sdata") == 0
9294 || strcmp (name, ".sbss") == 0)
9295 {
9296 //reg = 13;
9297 sda = htab->sdata[0].sym;
9298 }
9299 else if (strcmp (name, ".sdata2") == 0
9300 || strcmp (name, ".sbss2") == 0)
9301 {
9302 //reg = 2;
9303 sda = htab->sdata[1].sym;
9304 }
9305 else
9306 {
9307 (*_bfd_error_handler)
9308 (_("%B: the target (%s) of a %s relocation is "
9309 "in the wrong output section (%s)"),
9310 input_bfd,
9311 sym_name,
9312 howto->name,
9313 name);
9314
9315 bfd_set_error (bfd_error_bad_value);
9316 ret = FALSE;
9317 goto copy_reloc;
9318 }
9319
9320 if (sda != NULL)
9321 {
9322 if (!is_static_defined (sda))
9323 {
9324 unresolved_reloc = TRUE;
9325 break;
9326 }
9327 }
9328
9329 value = (sda->root.u.def.section->output_section->vma
9330 + sda->root.u.def.section->output_offset
9331 + addend);
9332
9333 if (r_type == R_PPC_VLE_SDAREL_LO16A)
9334 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9335 value, split16a_type);
9336 else if (r_type == R_PPC_VLE_SDAREL_LO16D)
9337 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9338 value, split16d_type);
9339 else if (r_type == R_PPC_VLE_SDAREL_HI16A)
9340 {
9341 value = value >> 16;
9342 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9343 value, split16a_type);
9344 }
9345 else if (r_type == R_PPC_VLE_SDAREL_HI16D)
9346 {
9347 value = value >> 16;
9348 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9349 value, split16d_type);
9350 }
9351 else if (r_type == R_PPC_VLE_SDAREL_HA16A)
9352 {
9353 value = (value + 0x8000) >> 16;
9354 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9355 value, split16a_type);
9356 }
9357 else if (r_type == R_PPC_VLE_SDAREL_HA16D)
9358 {
9359 value = (value + 0x8000) >> 16;
9360 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9361 value, split16d_type);
9362 }
9363 }
9364 goto copy_reloc;
9365
9366 /* Relocate against the beginning of the section. */
9367 case R_PPC_SECTOFF:
9368 case R_PPC_SECTOFF_LO:
9369 case R_PPC_SECTOFF_HI:
9370 case R_PPC_SECTOFF_HA:
9371 if (sec == NULL || sec->output_section == NULL)
9372 {
9373 unresolved_reloc = TRUE;
9374 break;
9375 }
9376 addend -= sec->output_section->vma;
9377 break;
9378
9379 /* Negative relocations. */
9380 case R_PPC_EMB_NADDR32:
9381 case R_PPC_EMB_NADDR16:
9382 case R_PPC_EMB_NADDR16_LO:
9383 case R_PPC_EMB_NADDR16_HI:
9384 case R_PPC_EMB_NADDR16_HA:
9385 addend -= 2 * relocation;
9386 break;
9387
9388 case R_PPC_COPY:
9389 case R_PPC_GLOB_DAT:
9390 case R_PPC_JMP_SLOT:
9391 case R_PPC_RELATIVE:
9392 case R_PPC_IRELATIVE:
9393 case R_PPC_PLT32:
9394 case R_PPC_PLTREL32:
9395 case R_PPC_PLT16_LO:
9396 case R_PPC_PLT16_HI:
9397 case R_PPC_PLT16_HA:
9398 case R_PPC_ADDR30:
9399 case R_PPC_EMB_RELSEC16:
9400 case R_PPC_EMB_RELST_LO:
9401 case R_PPC_EMB_RELST_HI:
9402 case R_PPC_EMB_RELST_HA:
9403 case R_PPC_EMB_BIT_FLD:
9404 info->callbacks->einfo
9405 (_("%P: %B: relocation %s is not yet supported for symbol %s\n"),
9406 input_bfd,
9407 howto->name,
9408 sym_name);
9409
9410 bfd_set_error (bfd_error_invalid_operation);
9411 ret = FALSE;
9412 goto copy_reloc;
9413 }
9414
9415 /* Do any further special processing. */
9416 switch (r_type)
9417 {
9418 default:
9419 break;
9420
9421 case R_PPC_ADDR16_HA:
9422 case R_PPC_REL16_HA:
9423 case R_PPC_REL16DX_HA:
9424 case R_PPC_SECTOFF_HA:
9425 case R_PPC_TPREL16_HA:
9426 case R_PPC_DTPREL16_HA:
9427 case R_PPC_EMB_NADDR16_HA:
9428 case R_PPC_EMB_RELST_HA:
9429 /* It's just possible that this symbol is a weak symbol
9430 that's not actually defined anywhere. In that case,
9431 'sec' would be NULL, and we should leave the symbol
9432 alone (it will be set to zero elsewhere in the link). */
9433 if (sec == NULL)
9434 break;
9435 /* Fall thru */
9436
9437 case R_PPC_PLT16_HA:
9438 case R_PPC_GOT16_HA:
9439 case R_PPC_GOT_TLSGD16_HA:
9440 case R_PPC_GOT_TLSLD16_HA:
9441 case R_PPC_GOT_TPREL16_HA:
9442 case R_PPC_GOT_DTPREL16_HA:
9443 /* Add 0x10000 if sign bit in 0:15 is set.
9444 Bits 0:15 are not used. */
9445 addend += 0x8000;
9446 break;
9447
9448 case R_PPC_ADDR16:
9449 case R_PPC_ADDR16_LO:
9450 case R_PPC_GOT16:
9451 case R_PPC_GOT16_LO:
9452 case R_PPC_SDAREL16:
9453 case R_PPC_SECTOFF:
9454 case R_PPC_SECTOFF_LO:
9455 case R_PPC_DTPREL16:
9456 case R_PPC_DTPREL16_LO:
9457 case R_PPC_TPREL16:
9458 case R_PPC_TPREL16_LO:
9459 case R_PPC_GOT_TLSGD16:
9460 case R_PPC_GOT_TLSGD16_LO:
9461 case R_PPC_GOT_TLSLD16:
9462 case R_PPC_GOT_TLSLD16_LO:
9463 case R_PPC_GOT_DTPREL16:
9464 case R_PPC_GOT_DTPREL16_LO:
9465 case R_PPC_GOT_TPREL16:
9466 case R_PPC_GOT_TPREL16_LO:
9467 {
9468 /* The 32-bit ABI lacks proper relocations to deal with
9469 certain 64-bit instructions. Prevent damage to bits
9470 that make up part of the insn opcode. */
9471 unsigned int insn, mask, lobit;
9472
9473 insn = bfd_get_32 (output_bfd,
9474 contents + rel->r_offset - d_offset);
9475 mask = 0;
9476 if (is_insn_ds_form (insn))
9477 mask = 3;
9478 else if (is_insn_dq_form (insn))
9479 mask = 15;
9480 else
9481 break;
9482 relocation += addend;
9483 addend = insn & mask;
9484 lobit = mask & relocation;
9485 if (lobit != 0)
9486 {
9487 relocation ^= lobit;
9488 info->callbacks->einfo
9489 (_("%P: %H: error: %s against `%s' not a multiple of %u\n"),
9490 input_bfd, input_section, rel->r_offset,
9491 howto->name, sym_name, mask + 1);
9492 bfd_set_error (bfd_error_bad_value);
9493 ret = FALSE;
9494 }
9495 }
9496 break;
9497 }
9498
9499 #ifdef DEBUG
9500 fprintf (stderr, "\ttype = %s (%d), name = %s, symbol index = %ld, "
9501 "offset = %ld, addend = %ld\n",
9502 howto->name,
9503 (int) r_type,
9504 sym_name,
9505 r_symndx,
9506 (long) rel->r_offset,
9507 (long) addend);
9508 #endif
9509
9510 if (unresolved_reloc
9511 && !((input_section->flags & SEC_DEBUGGING) != 0
9512 && h->def_dynamic)
9513 && _bfd_elf_section_offset (output_bfd, info, input_section,
9514 rel->r_offset) != (bfd_vma) -1)
9515 {
9516 info->callbacks->einfo
9517 (_("%P: %H: unresolvable %s relocation against symbol `%s'\n"),
9518 input_bfd, input_section, rel->r_offset,
9519 howto->name,
9520 sym_name);
9521 ret = FALSE;
9522 }
9523
9524 /* 16-bit fields in insns mostly have signed values, but a
9525 few insns have 16-bit unsigned values. Really, we should
9526 have different reloc types. */
9527 if (howto->complain_on_overflow != complain_overflow_dont
9528 && howto->dst_mask == 0xffff
9529 && (input_section->flags & SEC_CODE) != 0)
9530 {
9531 enum complain_overflow complain = complain_overflow_signed;
9532
9533 if ((elf_section_flags (input_section) & SHF_PPC_VLE) == 0)
9534 {
9535 unsigned int insn;
9536
9537 insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
9538 if ((insn & (0x3f << 26)) == 10u << 26 /* cmpli */)
9539 complain = complain_overflow_bitfield;
9540 else if ((insn & (0x3f << 26)) == 28u << 26 /* andi */
9541 || (insn & (0x3f << 26)) == 24u << 26 /* ori */
9542 || (insn & (0x3f << 26)) == 26u << 26 /* xori */)
9543 complain = complain_overflow_unsigned;
9544 }
9545 if (howto->complain_on_overflow != complain)
9546 {
9547 alt_howto = *howto;
9548 alt_howto.complain_on_overflow = complain;
9549 howto = &alt_howto;
9550 }
9551 }
9552
9553 if (r_type == R_PPC_REL16DX_HA)
9554 {
9555 /* Split field reloc isn't handled by _bfd_final_link_relocate. */
9556 if (rel->r_offset + 4 > input_section->size)
9557 r = bfd_reloc_outofrange;
9558 else
9559 {
9560 unsigned int insn;
9561
9562 relocation += addend;
9563 relocation -= (rel->r_offset
9564 + input_section->output_offset
9565 + input_section->output_section->vma);
9566 relocation >>= 16;
9567 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
9568 insn &= ~0x1fffc1;
9569 insn |= (relocation & 0xffc1) | ((relocation & 0x3e) << 15);
9570 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
9571 r = bfd_reloc_ok;
9572 }
9573 }
9574 else
9575 r = _bfd_final_link_relocate (howto, input_bfd, input_section, contents,
9576 rel->r_offset, relocation, addend);
9577
9578 if (r != bfd_reloc_ok)
9579 {
9580 if (r == bfd_reloc_overflow)
9581 {
9582 overflow:
9583 /* On code like "if (foo) foo();" don't report overflow
9584 on a branch to zero when foo is undefined. */
9585 if (!warned
9586 && !(h != NULL
9587 && (h->root.type == bfd_link_hash_undefweak
9588 || h->root.type == bfd_link_hash_undefined)
9589 && is_branch_reloc (r_type)))
9590 info->callbacks->reloc_overflow
9591 (info, (h ? &h->root : NULL), sym_name, howto->name,
9592 rel->r_addend, input_bfd, input_section, rel->r_offset);
9593 }
9594 else
9595 {
9596 info->callbacks->einfo
9597 (_("%P: %H: %s reloc against `%s': error %d\n"),
9598 input_bfd, input_section, rel->r_offset,
9599 howto->name, sym_name, (int) r);
9600 ret = FALSE;
9601 }
9602 }
9603 copy_reloc:
9604 if (wrel != rel)
9605 *wrel = *rel;
9606 }
9607
9608 if (wrel != rel)
9609 {
9610 Elf_Internal_Shdr *rel_hdr;
9611 size_t deleted = rel - wrel;
9612
9613 rel_hdr = _bfd_elf_single_rel_hdr (input_section->output_section);
9614 rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted;
9615 if (rel_hdr->sh_size == 0)
9616 {
9617 /* It is too late to remove an empty reloc section. Leave
9618 one NONE reloc.
9619 ??? What is wrong with an empty section??? */
9620 rel_hdr->sh_size = rel_hdr->sh_entsize;
9621 deleted -= 1;
9622 wrel++;
9623 }
9624 relend = wrel;
9625 rel_hdr = _bfd_elf_single_rel_hdr (input_section);
9626 rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted;
9627 input_section->reloc_count -= deleted;
9628 }
9629
9630 #ifdef DEBUG
9631 fprintf (stderr, "\n");
9632 #endif
9633
9634 if (input_section->sec_info_type == SEC_INFO_TYPE_TARGET
9635 && input_section->size != input_section->rawsize
9636 && (strcmp (input_section->output_section->name, ".init") == 0
9637 || strcmp (input_section->output_section->name, ".fini") == 0))
9638 {
9639 /* Branch around the trampolines. */
9640 unsigned int insn = B + input_section->size - input_section->rawsize;
9641 bfd_put_32 (input_bfd, insn, contents + input_section->rawsize);
9642 }
9643
9644 if (htab->params->ppc476_workaround
9645 && input_section->sec_info_type == SEC_INFO_TYPE_TARGET
9646 && (!bfd_link_relocatable (info)
9647 || (input_section->output_section->alignment_power
9648 >= htab->params->pagesize_p2)))
9649 {
9650 bfd_vma start_addr, end_addr, addr;
9651 bfd_vma pagesize = (bfd_vma) 1 << htab->params->pagesize_p2;
9652
9653 if (relax_info->workaround_size != 0)
9654 {
9655 bfd_byte *p;
9656 unsigned int n;
9657 bfd_byte fill[4];
9658
9659 bfd_put_32 (input_bfd, BA, fill);
9660 p = contents + input_section->size - relax_info->workaround_size;
9661 n = relax_info->workaround_size >> 2;
9662 while (n--)
9663 {
9664 memcpy (p, fill, 4);
9665 p += 4;
9666 }
9667 }
9668
9669 /* The idea is: Replace the last instruction on a page with a
9670 branch to a patch area. Put the insn there followed by a
9671 branch back to the next page. Complicated a little by
9672 needing to handle moved conditional branches, and by not
9673 wanting to touch data-in-text. */
9674
9675 start_addr = (input_section->output_section->vma
9676 + input_section->output_offset);
9677 end_addr = (start_addr + input_section->size
9678 - relax_info->workaround_size);
9679 for (addr = ((start_addr & -pagesize) + pagesize - 4);
9680 addr < end_addr;
9681 addr += pagesize)
9682 {
9683 bfd_vma offset = addr - start_addr;
9684 Elf_Internal_Rela *lo, *hi;
9685 bfd_boolean is_data;
9686 bfd_vma patch_off, patch_addr;
9687 unsigned int insn;
9688
9689 /* Do we have a data reloc at this offset? If so, leave
9690 the word alone. */
9691 is_data = FALSE;
9692 lo = relocs;
9693 hi = relend;
9694 rel = NULL;
9695 while (lo < hi)
9696 {
9697 rel = lo + (hi - lo) / 2;
9698 if (rel->r_offset < offset)
9699 lo = rel + 1;
9700 else if (rel->r_offset > offset + 3)
9701 hi = rel;
9702 else
9703 {
9704 switch (ELF32_R_TYPE (rel->r_info))
9705 {
9706 case R_PPC_ADDR32:
9707 case R_PPC_UADDR32:
9708 case R_PPC_REL32:
9709 case R_PPC_ADDR30:
9710 is_data = TRUE;
9711 break;
9712 default:
9713 break;
9714 }
9715 break;
9716 }
9717 }
9718 if (is_data)
9719 continue;
9720
9721 /* Some instructions can be left alone too. Unconditional
9722 branches, except for bcctr with BO=0x14 (bctr, bctrl),
9723 avoid the icache failure.
9724
9725 The problem occurs due to prefetch across a page boundary
9726 where stale instructions can be fetched from the next
9727 page, and the mechanism for flushing these bad
9728 instructions fails under certain circumstances. The
9729 unconditional branches:
9730 1) Branch: b, bl, ba, bla,
9731 2) Branch Conditional: bc, bca, bcl, bcla,
9732 3) Branch Conditional to Link Register: bclr, bclrl,
9733 where (2) and (3) have BO=0x14 making them unconditional,
9734 prevent the bad prefetch because the prefetch itself is
9735 affected by these instructions. This happens even if the
9736 instruction is not executed.
9737
9738 A bctr example:
9739 .
9740 . lis 9,new_page@ha
9741 . addi 9,9,new_page@l
9742 . mtctr 9
9743 . bctr
9744 . nop
9745 . nop
9746 . new_page:
9747 .
9748 The bctr is not predicted taken due to ctr not being
9749 ready, so prefetch continues on past the bctr into the
9750 new page which might have stale instructions. If they
9751 fail to be flushed, then they will be executed after the
9752 bctr executes. Either of the following modifications
9753 prevent the bad prefetch from happening in the first
9754 place:
9755 .
9756 . lis 9,new_page@ha lis 9,new_page@ha
9757 . addi 9,9,new_page@l addi 9,9,new_page@l
9758 . mtctr 9 mtctr 9
9759 . bctr bctr
9760 . nop b somewhere_else
9761 . b somewhere_else nop
9762 . new_page: new_page:
9763 . */
9764 insn = bfd_get_32 (input_bfd, contents + offset);
9765 if ((insn & (0x3f << 26)) == (18u << 26) /* b,bl,ba,bla */
9766 || ((insn & (0x3f << 26)) == (16u << 26) /* bc,bcl,bca,bcla*/
9767 && (insn & (0x14 << 21)) == (0x14 << 21)) /* with BO=0x14 */
9768 || ((insn & (0x3f << 26)) == (19u << 26)
9769 && (insn & (0x3ff << 1)) == (16u << 1) /* bclr,bclrl */
9770 && (insn & (0x14 << 21)) == (0x14 << 21)))/* with BO=0x14 */
9771 continue;
9772
9773 patch_addr = (start_addr + input_section->size
9774 - relax_info->workaround_size);
9775 patch_addr = (patch_addr + 15) & -16;
9776 patch_off = patch_addr - start_addr;
9777 bfd_put_32 (input_bfd, B + patch_off - offset, contents + offset);
9778
9779 if (rel != NULL
9780 && rel->r_offset >= offset
9781 && rel->r_offset < offset + 4)
9782 {
9783 asection *sreloc;
9784
9785 /* If the insn we are patching had a reloc, adjust the
9786 reloc r_offset so that the reloc applies to the moved
9787 location. This matters for -r and --emit-relocs. */
9788 if (rel + 1 != relend)
9789 {
9790 Elf_Internal_Rela tmp = *rel;
9791
9792 /* Keep the relocs sorted by r_offset. */
9793 memmove (rel, rel + 1, (relend - (rel + 1)) * sizeof (*rel));
9794 relend[-1] = tmp;
9795 }
9796 relend[-1].r_offset += patch_off - offset;
9797
9798 /* Adjust REL16 addends too. */
9799 switch (ELF32_R_TYPE (relend[-1].r_info))
9800 {
9801 case R_PPC_REL16:
9802 case R_PPC_REL16_LO:
9803 case R_PPC_REL16_HI:
9804 case R_PPC_REL16_HA:
9805 relend[-1].r_addend += patch_off - offset;
9806 break;
9807 default:
9808 break;
9809 }
9810
9811 /* If we are building a PIE or shared library with
9812 non-PIC objects, perhaps we had a dynamic reloc too?
9813 If so, the dynamic reloc must move with the insn. */
9814 sreloc = elf_section_data (input_section)->sreloc;
9815 if (sreloc != NULL)
9816 {
9817 Elf32_External_Rela *slo, *shi, *srelend;
9818 bfd_vma soffset;
9819
9820 slo = (Elf32_External_Rela *) sreloc->contents;
9821 shi = srelend = slo + sreloc->reloc_count;
9822 soffset = (offset + input_section->output_section->vma
9823 + input_section->output_offset);
9824 while (slo < shi)
9825 {
9826 Elf32_External_Rela *srel = slo + (shi - slo) / 2;
9827 bfd_elf32_swap_reloca_in (output_bfd, (bfd_byte *) srel,
9828 &outrel);
9829 if (outrel.r_offset < soffset)
9830 slo = srel + 1;
9831 else if (outrel.r_offset > soffset + 3)
9832 shi = srel;
9833 else
9834 {
9835 if (srel + 1 != srelend)
9836 {
9837 memmove (srel, srel + 1,
9838 (srelend - (srel + 1)) * sizeof (*srel));
9839 srel = srelend - 1;
9840 }
9841 outrel.r_offset += patch_off - offset;
9842 bfd_elf32_swap_reloca_out (output_bfd, &outrel,
9843 (bfd_byte *) srel);
9844 break;
9845 }
9846 }
9847 }
9848 }
9849 else
9850 rel = NULL;
9851
9852 if ((insn & (0x3f << 26)) == (16u << 26) /* bc */
9853 && (insn & 2) == 0 /* relative */)
9854 {
9855 bfd_vma delta = ((insn & 0xfffc) ^ 0x8000) - 0x8000;
9856
9857 delta += offset - patch_off;
9858 if (bfd_link_relocatable (info) && rel != NULL)
9859 delta = 0;
9860 if (!bfd_link_relocatable (info) && rel != NULL)
9861 {
9862 enum elf_ppc_reloc_type r_type;
9863
9864 r_type = ELF32_R_TYPE (relend[-1].r_info);
9865 if (r_type == R_PPC_REL14_BRTAKEN)
9866 insn |= BRANCH_PREDICT_BIT;
9867 else if (r_type == R_PPC_REL14_BRNTAKEN)
9868 insn &= ~BRANCH_PREDICT_BIT;
9869 else
9870 BFD_ASSERT (r_type == R_PPC_REL14);
9871
9872 if ((r_type == R_PPC_REL14_BRTAKEN
9873 || r_type == R_PPC_REL14_BRNTAKEN)
9874 && delta + 0x8000 < 0x10000
9875 && (bfd_signed_vma) delta < 0)
9876 insn ^= BRANCH_PREDICT_BIT;
9877 }
9878 if (delta + 0x8000 < 0x10000)
9879 {
9880 bfd_put_32 (input_bfd,
9881 (insn & ~0xfffc) | (delta & 0xfffc),
9882 contents + patch_off);
9883 patch_off += 4;
9884 bfd_put_32 (input_bfd,
9885 B | ((offset + 4 - patch_off) & 0x3fffffc),
9886 contents + patch_off);
9887 patch_off += 4;
9888 }
9889 else
9890 {
9891 if (rel != NULL)
9892 {
9893 unsigned int r_sym = ELF32_R_SYM (relend[-1].r_info);
9894
9895 relend[-1].r_offset += 8;
9896 relend[-1].r_info = ELF32_R_INFO (r_sym, R_PPC_REL24);
9897 }
9898 bfd_put_32 (input_bfd,
9899 (insn & ~0xfffc) | 8,
9900 contents + patch_off);
9901 patch_off += 4;
9902 bfd_put_32 (input_bfd,
9903 B | ((offset + 4 - patch_off) & 0x3fffffc),
9904 contents + patch_off);
9905 patch_off += 4;
9906 bfd_put_32 (input_bfd,
9907 B | ((delta - 8) & 0x3fffffc),
9908 contents + patch_off);
9909 patch_off += 4;
9910 }
9911 }
9912 else
9913 {
9914 bfd_put_32 (input_bfd, insn, contents + patch_off);
9915 patch_off += 4;
9916 bfd_put_32 (input_bfd,
9917 B | ((offset + 4 - patch_off) & 0x3fffffc),
9918 contents + patch_off);
9919 patch_off += 4;
9920 }
9921 BFD_ASSERT (patch_off <= input_section->size);
9922 relax_info->workaround_size = input_section->size - patch_off;
9923 }
9924 }
9925
9926 return ret;
9927 }
9928 \f
9929 /* Finish up dynamic symbol handling. We set the contents of various
9930 dynamic sections here. */
9931
9932 static bfd_boolean
9933 ppc_elf_finish_dynamic_symbol (bfd *output_bfd,
9934 struct bfd_link_info *info,
9935 struct elf_link_hash_entry *h,
9936 Elf_Internal_Sym *sym)
9937 {
9938 struct ppc_elf_link_hash_table *htab;
9939 struct plt_entry *ent;
9940 bfd_boolean doneone;
9941
9942 #ifdef DEBUG
9943 fprintf (stderr, "ppc_elf_finish_dynamic_symbol called for %s",
9944 h->root.root.string);
9945 #endif
9946
9947 htab = ppc_elf_hash_table (info);
9948 BFD_ASSERT (htab->elf.dynobj != NULL);
9949
9950 doneone = FALSE;
9951 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
9952 if (ent->plt.offset != (bfd_vma) -1)
9953 {
9954 if (!doneone)
9955 {
9956 Elf_Internal_Rela rela;
9957 bfd_byte *loc;
9958 bfd_vma reloc_index;
9959
9960 if (htab->plt_type == PLT_NEW
9961 || !htab->elf.dynamic_sections_created
9962 || h->dynindx == -1)
9963 reloc_index = ent->plt.offset / 4;
9964 else
9965 {
9966 reloc_index = ((ent->plt.offset - htab->plt_initial_entry_size)
9967 / htab->plt_slot_size);
9968 if (reloc_index > PLT_NUM_SINGLE_ENTRIES
9969 && htab->plt_type == PLT_OLD)
9970 reloc_index -= (reloc_index - PLT_NUM_SINGLE_ENTRIES) / 2;
9971 }
9972
9973 /* This symbol has an entry in the procedure linkage table.
9974 Set it up. */
9975 if (htab->plt_type == PLT_VXWORKS
9976 && htab->elf.dynamic_sections_created
9977 && h->dynindx != -1)
9978 {
9979 bfd_vma got_offset;
9980 const bfd_vma *plt_entry;
9981
9982 /* The first three entries in .got.plt are reserved. */
9983 got_offset = (reloc_index + 3) * 4;
9984
9985 /* Use the right PLT. */
9986 plt_entry = bfd_link_pic (info) ? ppc_elf_vxworks_pic_plt_entry
9987 : ppc_elf_vxworks_plt_entry;
9988
9989 /* Fill in the .plt on VxWorks. */
9990 if (bfd_link_pic (info))
9991 {
9992 bfd_put_32 (output_bfd,
9993 plt_entry[0] | PPC_HA (got_offset),
9994 htab->plt->contents + ent->plt.offset + 0);
9995 bfd_put_32 (output_bfd,
9996 plt_entry[1] | PPC_LO (got_offset),
9997 htab->plt->contents + ent->plt.offset + 4);
9998 }
9999 else
10000 {
10001 bfd_vma got_loc = got_offset + SYM_VAL (htab->elf.hgot);
10002
10003 bfd_put_32 (output_bfd,
10004 plt_entry[0] | PPC_HA (got_loc),
10005 htab->plt->contents + ent->plt.offset + 0);
10006 bfd_put_32 (output_bfd,
10007 plt_entry[1] | PPC_LO (got_loc),
10008 htab->plt->contents + ent->plt.offset + 4);
10009 }
10010
10011 bfd_put_32 (output_bfd, plt_entry[2],
10012 htab->plt->contents + ent->plt.offset + 8);
10013 bfd_put_32 (output_bfd, plt_entry[3],
10014 htab->plt->contents + ent->plt.offset + 12);
10015
10016 /* This instruction is an immediate load. The value loaded is
10017 the byte offset of the R_PPC_JMP_SLOT relocation from the
10018 start of the .rela.plt section. The value is stored in the
10019 low-order 16 bits of the load instruction. */
10020 /* NOTE: It appears that this is now an index rather than a
10021 prescaled offset. */
10022 bfd_put_32 (output_bfd,
10023 plt_entry[4] | reloc_index,
10024 htab->plt->contents + ent->plt.offset + 16);
10025 /* This instruction is a PC-relative branch whose target is
10026 the start of the PLT section. The address of this branch
10027 instruction is 20 bytes beyond the start of this PLT entry.
10028 The address is encoded in bits 6-29, inclusive. The value
10029 stored is right-shifted by two bits, permitting a 26-bit
10030 offset. */
10031 bfd_put_32 (output_bfd,
10032 (plt_entry[5]
10033 | (-(ent->plt.offset + 20) & 0x03fffffc)),
10034 htab->plt->contents + ent->plt.offset + 20);
10035 bfd_put_32 (output_bfd, plt_entry[6],
10036 htab->plt->contents + ent->plt.offset + 24);
10037 bfd_put_32 (output_bfd, plt_entry[7],
10038 htab->plt->contents + ent->plt.offset + 28);
10039
10040 /* Fill in the GOT entry corresponding to this PLT slot with
10041 the address immediately after the "bctr" instruction
10042 in this PLT entry. */
10043 bfd_put_32 (output_bfd, (htab->plt->output_section->vma
10044 + htab->plt->output_offset
10045 + ent->plt.offset + 16),
10046 htab->sgotplt->contents + got_offset);
10047
10048 if (!bfd_link_pic (info))
10049 {
10050 /* Fill in a couple of entries in .rela.plt.unloaded. */
10051 loc = htab->srelplt2->contents
10052 + ((VXWORKS_PLTRESOLVE_RELOCS + reloc_index
10053 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS)
10054 * sizeof (Elf32_External_Rela));
10055
10056 /* Provide the @ha relocation for the first instruction. */
10057 rela.r_offset = (htab->plt->output_section->vma
10058 + htab->plt->output_offset
10059 + ent->plt.offset + 2);
10060 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
10061 R_PPC_ADDR16_HA);
10062 rela.r_addend = got_offset;
10063 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10064 loc += sizeof (Elf32_External_Rela);
10065
10066 /* Provide the @l relocation for the second instruction. */
10067 rela.r_offset = (htab->plt->output_section->vma
10068 + htab->plt->output_offset
10069 + ent->plt.offset + 6);
10070 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
10071 R_PPC_ADDR16_LO);
10072 rela.r_addend = got_offset;
10073 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10074 loc += sizeof (Elf32_External_Rela);
10075
10076 /* Provide a relocation for the GOT entry corresponding to this
10077 PLT slot. Point it at the middle of the .plt entry. */
10078 rela.r_offset = (htab->sgotplt->output_section->vma
10079 + htab->sgotplt->output_offset
10080 + got_offset);
10081 rela.r_info = ELF32_R_INFO (htab->elf.hplt->indx,
10082 R_PPC_ADDR32);
10083 rela.r_addend = ent->plt.offset + 16;
10084 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10085 }
10086
10087 /* VxWorks uses non-standard semantics for R_PPC_JMP_SLOT.
10088 In particular, the offset for the relocation is not the
10089 address of the PLT entry for this function, as specified
10090 by the ABI. Instead, the offset is set to the address of
10091 the GOT slot for this function. See EABI 4.4.4.1. */
10092 rela.r_offset = (htab->sgotplt->output_section->vma
10093 + htab->sgotplt->output_offset
10094 + got_offset);
10095
10096 }
10097 else
10098 {
10099 asection *splt = htab->plt;
10100 if (!htab->elf.dynamic_sections_created
10101 || h->dynindx == -1)
10102 splt = htab->iplt;
10103
10104 rela.r_offset = (splt->output_section->vma
10105 + splt->output_offset
10106 + ent->plt.offset);
10107 if (htab->plt_type == PLT_OLD
10108 || !htab->elf.dynamic_sections_created
10109 || h->dynindx == -1)
10110 {
10111 /* We don't need to fill in the .plt. The ppc dynamic
10112 linker will fill it in. */
10113 }
10114 else
10115 {
10116 bfd_vma val = (htab->glink_pltresolve + ent->plt.offset
10117 + htab->glink->output_section->vma
10118 + htab->glink->output_offset);
10119 bfd_put_32 (output_bfd, val,
10120 splt->contents + ent->plt.offset);
10121 }
10122 }
10123
10124 /* Fill in the entry in the .rela.plt section. */
10125 rela.r_addend = 0;
10126 if (!htab->elf.dynamic_sections_created
10127 || h->dynindx == -1)
10128 {
10129 BFD_ASSERT (h->type == STT_GNU_IFUNC
10130 && h->def_regular
10131 && (h->root.type == bfd_link_hash_defined
10132 || h->root.type == bfd_link_hash_defweak));
10133 rela.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
10134 rela.r_addend = SYM_VAL (h);
10135 }
10136 else
10137 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_JMP_SLOT);
10138
10139 if (!htab->elf.dynamic_sections_created
10140 || h->dynindx == -1)
10141 loc = (htab->reliplt->contents
10142 + (htab->reliplt->reloc_count++
10143 * sizeof (Elf32_External_Rela)));
10144 else
10145 loc = (htab->relplt->contents
10146 + reloc_index * sizeof (Elf32_External_Rela));
10147 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10148
10149 if (!h->def_regular)
10150 {
10151 /* Mark the symbol as undefined, rather than as
10152 defined in the .plt section. Leave the value if
10153 there were any relocations where pointer equality
10154 matters (this is a clue for the dynamic linker, to
10155 make function pointer comparisons work between an
10156 application and shared library), otherwise set it
10157 to zero. */
10158 sym->st_shndx = SHN_UNDEF;
10159 if (!h->pointer_equality_needed)
10160 sym->st_value = 0;
10161 else if (!h->ref_regular_nonweak)
10162 {
10163 /* This breaks function pointer comparisons, but
10164 that is better than breaking tests for a NULL
10165 function pointer. */
10166 sym->st_value = 0;
10167 }
10168 }
10169 else if (h->type == STT_GNU_IFUNC
10170 && !bfd_link_pic (info))
10171 {
10172 /* Set the value of ifunc symbols in a non-pie
10173 executable to the glink entry. This is to avoid
10174 text relocations. We can't do this for ifunc in
10175 allocate_dynrelocs, as we do for normal dynamic
10176 function symbols with plt entries, because we need
10177 to keep the original value around for the ifunc
10178 relocation. */
10179 sym->st_shndx = (_bfd_elf_section_from_bfd_section
10180 (output_bfd, htab->glink->output_section));
10181 sym->st_value = (ent->glink_offset
10182 + htab->glink->output_offset
10183 + htab->glink->output_section->vma);
10184 }
10185 doneone = TRUE;
10186 }
10187
10188 if (htab->plt_type == PLT_NEW
10189 || !htab->elf.dynamic_sections_created
10190 || h->dynindx == -1)
10191 {
10192 unsigned char *p;
10193 asection *splt = htab->plt;
10194 if (!htab->elf.dynamic_sections_created
10195 || h->dynindx == -1)
10196 splt = htab->iplt;
10197
10198 p = (unsigned char *) htab->glink->contents + ent->glink_offset;
10199
10200 if (h == htab->tls_get_addr && !htab->params->no_tls_get_addr_opt)
10201 {
10202 bfd_put_32 (output_bfd, LWZ_11_3, p);
10203 p += 4;
10204 bfd_put_32 (output_bfd, LWZ_12_3 + 4, p);
10205 p += 4;
10206 bfd_put_32 (output_bfd, MR_0_3, p);
10207 p += 4;
10208 bfd_put_32 (output_bfd, CMPWI_11_0, p);
10209 p += 4;
10210 bfd_put_32 (output_bfd, ADD_3_12_2, p);
10211 p += 4;
10212 bfd_put_32 (output_bfd, BEQLR, p);
10213 p += 4;
10214 bfd_put_32 (output_bfd, MR_3_0, p);
10215 p += 4;
10216 bfd_put_32 (output_bfd, NOP, p);
10217 p += 4;
10218 }
10219
10220 write_glink_stub (ent, splt, p, info);
10221
10222 if (!bfd_link_pic (info))
10223 /* We only need one non-PIC glink stub. */
10224 break;
10225 }
10226 else
10227 break;
10228 }
10229
10230 if (h->needs_copy)
10231 {
10232 asection *s;
10233 Elf_Internal_Rela rela;
10234 bfd_byte *loc;
10235
10236 /* This symbols needs a copy reloc. Set it up. */
10237
10238 #ifdef DEBUG
10239 fprintf (stderr, ", copy");
10240 #endif
10241
10242 BFD_ASSERT (h->dynindx != -1);
10243
10244 if (ppc_elf_hash_entry (h)->has_sda_refs)
10245 s = htab->relsbss;
10246 else
10247 s = htab->relbss;
10248 BFD_ASSERT (s != NULL);
10249
10250 rela.r_offset = SYM_VAL (h);
10251 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_COPY);
10252 rela.r_addend = 0;
10253 loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
10254 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10255 }
10256
10257 #ifdef DEBUG
10258 fprintf (stderr, "\n");
10259 #endif
10260
10261 return TRUE;
10262 }
10263 \f
10264 static enum elf_reloc_type_class
10265 ppc_elf_reloc_type_class (const struct bfd_link_info *info,
10266 const asection *rel_sec,
10267 const Elf_Internal_Rela *rela)
10268 {
10269 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
10270
10271 if (rel_sec == htab->reliplt)
10272 return reloc_class_ifunc;
10273
10274 switch (ELF32_R_TYPE (rela->r_info))
10275 {
10276 case R_PPC_RELATIVE:
10277 return reloc_class_relative;
10278 case R_PPC_JMP_SLOT:
10279 return reloc_class_plt;
10280 case R_PPC_COPY:
10281 return reloc_class_copy;
10282 default:
10283 return reloc_class_normal;
10284 }
10285 }
10286 \f
10287 /* Finish up the dynamic sections. */
10288
10289 static bfd_boolean
10290 ppc_elf_finish_dynamic_sections (bfd *output_bfd,
10291 struct bfd_link_info *info)
10292 {
10293 asection *sdyn;
10294 asection *splt;
10295 struct ppc_elf_link_hash_table *htab;
10296 bfd_vma got;
10297 bfd *dynobj;
10298 bfd_boolean ret = TRUE;
10299
10300 #ifdef DEBUG
10301 fprintf (stderr, "ppc_elf_finish_dynamic_sections called\n");
10302 #endif
10303
10304 htab = ppc_elf_hash_table (info);
10305 dynobj = elf_hash_table (info)->dynobj;
10306 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
10307 if (htab->is_vxworks)
10308 splt = bfd_get_linker_section (dynobj, ".plt");
10309 else
10310 splt = NULL;
10311
10312 got = 0;
10313 if (htab->elf.hgot != NULL)
10314 got = SYM_VAL (htab->elf.hgot);
10315
10316 if (htab->elf.dynamic_sections_created)
10317 {
10318 Elf32_External_Dyn *dyncon, *dynconend;
10319
10320 BFD_ASSERT (htab->plt != NULL && sdyn != NULL);
10321
10322 dyncon = (Elf32_External_Dyn *) sdyn->contents;
10323 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
10324 for (; dyncon < dynconend; dyncon++)
10325 {
10326 Elf_Internal_Dyn dyn;
10327 asection *s;
10328
10329 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
10330
10331 switch (dyn.d_tag)
10332 {
10333 case DT_PLTGOT:
10334 if (htab->is_vxworks)
10335 s = htab->sgotplt;
10336 else
10337 s = htab->plt;
10338 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
10339 break;
10340
10341 case DT_PLTRELSZ:
10342 dyn.d_un.d_val = htab->relplt->size;
10343 break;
10344
10345 case DT_JMPREL:
10346 s = htab->relplt;
10347 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
10348 break;
10349
10350 case DT_PPC_GOT:
10351 dyn.d_un.d_ptr = got;
10352 break;
10353
10354 case DT_RELASZ:
10355 if (htab->is_vxworks)
10356 {
10357 if (htab->relplt)
10358 dyn.d_un.d_ptr -= htab->relplt->size;
10359 break;
10360 }
10361 continue;
10362
10363 default:
10364 if (htab->is_vxworks
10365 && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn))
10366 break;
10367 continue;
10368 }
10369
10370 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
10371 }
10372 }
10373
10374 if (htab->got != NULL)
10375 {
10376 if (htab->elf.hgot->root.u.def.section == htab->got
10377 || htab->elf.hgot->root.u.def.section == htab->sgotplt)
10378 {
10379 unsigned char *p = htab->elf.hgot->root.u.def.section->contents;
10380
10381 p += htab->elf.hgot->root.u.def.value;
10382 if (htab->plt_type == PLT_OLD)
10383 {
10384 /* Add a blrl instruction at _GLOBAL_OFFSET_TABLE_-4
10385 so that a function can easily find the address of
10386 _GLOBAL_OFFSET_TABLE_. */
10387 BFD_ASSERT (htab->elf.hgot->root.u.def.value - 4
10388 < htab->elf.hgot->root.u.def.section->size);
10389 bfd_put_32 (output_bfd, 0x4e800021, p - 4);
10390 }
10391
10392 if (sdyn != NULL)
10393 {
10394 bfd_vma val = sdyn->output_section->vma + sdyn->output_offset;
10395 BFD_ASSERT (htab->elf.hgot->root.u.def.value
10396 < htab->elf.hgot->root.u.def.section->size);
10397 bfd_put_32 (output_bfd, val, p);
10398 }
10399 }
10400 else
10401 {
10402 info->callbacks->einfo (_("%P: %s not defined in linker created %s\n"),
10403 htab->elf.hgot->root.root.string,
10404 (htab->sgotplt != NULL
10405 ? htab->sgotplt->name : htab->got->name));
10406 bfd_set_error (bfd_error_bad_value);
10407 ret = FALSE;
10408 }
10409
10410 elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 4;
10411 }
10412
10413 /* Fill in the first entry in the VxWorks procedure linkage table. */
10414 if (splt && splt->size > 0)
10415 {
10416 /* Use the right PLT. */
10417 const bfd_vma *plt_entry = (bfd_link_pic (info)
10418 ? ppc_elf_vxworks_pic_plt0_entry
10419 : ppc_elf_vxworks_plt0_entry);
10420
10421 if (!bfd_link_pic (info))
10422 {
10423 bfd_vma got_value = SYM_VAL (htab->elf.hgot);
10424
10425 bfd_put_32 (output_bfd, plt_entry[0] | PPC_HA (got_value),
10426 splt->contents + 0);
10427 bfd_put_32 (output_bfd, plt_entry[1] | PPC_LO (got_value),
10428 splt->contents + 4);
10429 }
10430 else
10431 {
10432 bfd_put_32 (output_bfd, plt_entry[0], splt->contents + 0);
10433 bfd_put_32 (output_bfd, plt_entry[1], splt->contents + 4);
10434 }
10435 bfd_put_32 (output_bfd, plt_entry[2], splt->contents + 8);
10436 bfd_put_32 (output_bfd, plt_entry[3], splt->contents + 12);
10437 bfd_put_32 (output_bfd, plt_entry[4], splt->contents + 16);
10438 bfd_put_32 (output_bfd, plt_entry[5], splt->contents + 20);
10439 bfd_put_32 (output_bfd, plt_entry[6], splt->contents + 24);
10440 bfd_put_32 (output_bfd, plt_entry[7], splt->contents + 28);
10441
10442 if (! bfd_link_pic (info))
10443 {
10444 Elf_Internal_Rela rela;
10445 bfd_byte *loc;
10446
10447 loc = htab->srelplt2->contents;
10448
10449 /* Output the @ha relocation for the first instruction. */
10450 rela.r_offset = (htab->plt->output_section->vma
10451 + htab->plt->output_offset
10452 + 2);
10453 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
10454 rela.r_addend = 0;
10455 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10456 loc += sizeof (Elf32_External_Rela);
10457
10458 /* Output the @l relocation for the second instruction. */
10459 rela.r_offset = (htab->plt->output_section->vma
10460 + htab->plt->output_offset
10461 + 6);
10462 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
10463 rela.r_addend = 0;
10464 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10465 loc += sizeof (Elf32_External_Rela);
10466
10467 /* Fix up the remaining relocations. They may have the wrong
10468 symbol index for _G_O_T_ or _P_L_T_ depending on the order
10469 in which symbols were output. */
10470 while (loc < htab->srelplt2->contents + htab->srelplt2->size)
10471 {
10472 Elf_Internal_Rela rel;
10473
10474 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
10475 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
10476 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
10477 loc += sizeof (Elf32_External_Rela);
10478
10479 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
10480 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
10481 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
10482 loc += sizeof (Elf32_External_Rela);
10483
10484 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
10485 rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_PPC_ADDR32);
10486 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
10487 loc += sizeof (Elf32_External_Rela);
10488 }
10489 }
10490 }
10491
10492 if (htab->glink != NULL
10493 && htab->glink->contents != NULL
10494 && htab->elf.dynamic_sections_created)
10495 {
10496 unsigned char *p;
10497 unsigned char *endp;
10498 bfd_vma res0;
10499 unsigned int i;
10500
10501 /*
10502 * PIC glink code is the following:
10503 *
10504 * # ith PLT code stub.
10505 * addis 11,30,(plt+(i-1)*4-got)@ha
10506 * lwz 11,(plt+(i-1)*4-got)@l(11)
10507 * mtctr 11
10508 * bctr
10509 *
10510 * # A table of branches, one for each plt entry.
10511 * # The idea is that the plt call stub loads ctr and r11 with these
10512 * # addresses, so (r11 - res_0) gives the plt index * 4.
10513 * res_0: b PLTresolve
10514 * res_1: b PLTresolve
10515 * .
10516 * # Some number of entries towards the end can be nops
10517 * res_n_m3: nop
10518 * res_n_m2: nop
10519 * res_n_m1:
10520 *
10521 * PLTresolve:
10522 * addis 11,11,(1f-res_0)@ha
10523 * mflr 0
10524 * bcl 20,31,1f
10525 * 1: addi 11,11,(1b-res_0)@l
10526 * mflr 12
10527 * mtlr 0
10528 * sub 11,11,12 # r11 = index * 4
10529 * addis 12,12,(got+4-1b)@ha
10530 * lwz 0,(got+4-1b)@l(12) # got[1] address of dl_runtime_resolve
10531 * lwz 12,(got+8-1b)@l(12) # got[2] contains the map address
10532 * mtctr 0
10533 * add 0,11,11
10534 * add 11,0,11 # r11 = index * 12 = reloc offset.
10535 * bctr
10536 */
10537 static const unsigned int pic_plt_resolve[] =
10538 {
10539 ADDIS_11_11,
10540 MFLR_0,
10541 BCL_20_31,
10542 ADDI_11_11,
10543 MFLR_12,
10544 MTLR_0,
10545 SUB_11_11_12,
10546 ADDIS_12_12,
10547 LWZ_0_12,
10548 LWZ_12_12,
10549 MTCTR_0,
10550 ADD_0_11_11,
10551 ADD_11_0_11,
10552 BCTR,
10553 NOP,
10554 NOP
10555 };
10556
10557 /*
10558 * Non-PIC glink code is a little simpler.
10559 *
10560 * # ith PLT code stub.
10561 * lis 11,(plt+(i-1)*4)@ha
10562 * lwz 11,(plt+(i-1)*4)@l(11)
10563 * mtctr 11
10564 * bctr
10565 *
10566 * The branch table is the same, then comes
10567 *
10568 * PLTresolve:
10569 * lis 12,(got+4)@ha
10570 * addis 11,11,(-res_0)@ha
10571 * lwz 0,(got+4)@l(12) # got[1] address of dl_runtime_resolve
10572 * addi 11,11,(-res_0)@l # r11 = index * 4
10573 * mtctr 0
10574 * add 0,11,11
10575 * lwz 12,(got+8)@l(12) # got[2] contains the map address
10576 * add 11,0,11 # r11 = index * 12 = reloc offset.
10577 * bctr
10578 */
10579 static const unsigned int plt_resolve[] =
10580 {
10581 LIS_12,
10582 ADDIS_11_11,
10583 LWZ_0_12,
10584 ADDI_11_11,
10585 MTCTR_0,
10586 ADD_0_11_11,
10587 LWZ_12_12,
10588 ADD_11_0_11,
10589 BCTR,
10590 NOP,
10591 NOP,
10592 NOP,
10593 NOP,
10594 NOP,
10595 NOP,
10596 NOP
10597 };
10598
10599 if (ARRAY_SIZE (pic_plt_resolve) != GLINK_PLTRESOLVE / 4)
10600 abort ();
10601 if (ARRAY_SIZE (plt_resolve) != GLINK_PLTRESOLVE / 4)
10602 abort ();
10603
10604 /* Build the branch table, one for each plt entry (less one),
10605 and perhaps some padding. */
10606 p = htab->glink->contents;
10607 p += htab->glink_pltresolve;
10608 endp = htab->glink->contents;
10609 endp += htab->glink->size - GLINK_PLTRESOLVE;
10610 while (p < endp - (htab->params->ppc476_workaround ? 0 : 8 * 4))
10611 {
10612 bfd_put_32 (output_bfd, B + endp - p, p);
10613 p += 4;
10614 }
10615 while (p < endp)
10616 {
10617 bfd_put_32 (output_bfd, NOP, p);
10618 p += 4;
10619 }
10620
10621 res0 = (htab->glink_pltresolve
10622 + htab->glink->output_section->vma
10623 + htab->glink->output_offset);
10624
10625 if (htab->params->ppc476_workaround)
10626 {
10627 /* Ensure that a call stub at the end of a page doesn't
10628 result in prefetch over the end of the page into the
10629 glink branch table. */
10630 bfd_vma pagesize = (bfd_vma) 1 << htab->params->pagesize_p2;
10631 bfd_vma page_addr;
10632 bfd_vma glink_start = (htab->glink->output_section->vma
10633 + htab->glink->output_offset);
10634
10635 for (page_addr = res0 & -pagesize;
10636 page_addr > glink_start;
10637 page_addr -= pagesize)
10638 {
10639 /* We have a plt call stub that may need fixing. */
10640 bfd_byte *loc;
10641 unsigned int insn;
10642
10643 loc = htab->glink->contents + page_addr - 4 - glink_start;
10644 insn = bfd_get_32 (output_bfd, loc);
10645 if (insn == BCTR)
10646 {
10647 /* By alignment, we know that there must be at least
10648 one other call stub before this one. */
10649 insn = bfd_get_32 (output_bfd, loc - 16);
10650 if (insn == BCTR)
10651 bfd_put_32 (output_bfd, B | (-16 & 0x3fffffc), loc);
10652 else
10653 bfd_put_32 (output_bfd, B | (-20 & 0x3fffffc), loc);
10654 }
10655 }
10656 }
10657
10658 /* Last comes the PLTresolve stub. */
10659 if (bfd_link_pic (info))
10660 {
10661 bfd_vma bcl;
10662
10663 for (i = 0; i < ARRAY_SIZE (pic_plt_resolve); i++)
10664 {
10665 unsigned int insn = pic_plt_resolve[i];
10666
10667 if (htab->params->ppc476_workaround && insn == NOP)
10668 insn = BA + 0;
10669 bfd_put_32 (output_bfd, insn, p);
10670 p += 4;
10671 }
10672 p -= 4 * ARRAY_SIZE (pic_plt_resolve);
10673
10674 bcl = (htab->glink->size - GLINK_PLTRESOLVE + 3*4
10675 + htab->glink->output_section->vma
10676 + htab->glink->output_offset);
10677
10678 bfd_put_32 (output_bfd,
10679 ADDIS_11_11 + PPC_HA (bcl - res0), p + 0*4);
10680 bfd_put_32 (output_bfd,
10681 ADDI_11_11 + PPC_LO (bcl - res0), p + 3*4);
10682 bfd_put_32 (output_bfd,
10683 ADDIS_12_12 + PPC_HA (got + 4 - bcl), p + 7*4);
10684 if (PPC_HA (got + 4 - bcl) == PPC_HA (got + 8 - bcl))
10685 {
10686 bfd_put_32 (output_bfd,
10687 LWZ_0_12 + PPC_LO (got + 4 - bcl), p + 8*4);
10688 bfd_put_32 (output_bfd,
10689 LWZ_12_12 + PPC_LO (got + 8 - bcl), p + 9*4);
10690 }
10691 else
10692 {
10693 bfd_put_32 (output_bfd,
10694 LWZU_0_12 + PPC_LO (got + 4 - bcl), p + 8*4);
10695 bfd_put_32 (output_bfd,
10696 LWZ_12_12 + 4, p + 9*4);
10697 }
10698 }
10699 else
10700 {
10701 for (i = 0; i < ARRAY_SIZE (plt_resolve); i++)
10702 {
10703 unsigned int insn = plt_resolve[i];
10704
10705 if (htab->params->ppc476_workaround && insn == NOP)
10706 insn = BA + 0;
10707 bfd_put_32 (output_bfd, insn, p);
10708 p += 4;
10709 }
10710 p -= 4 * ARRAY_SIZE (plt_resolve);
10711
10712 bfd_put_32 (output_bfd,
10713 LIS_12 + PPC_HA (got + 4), p + 0*4);
10714 bfd_put_32 (output_bfd,
10715 ADDIS_11_11 + PPC_HA (-res0), p + 1*4);
10716 bfd_put_32 (output_bfd,
10717 ADDI_11_11 + PPC_LO (-res0), p + 3*4);
10718 if (PPC_HA (got + 4) == PPC_HA (got + 8))
10719 {
10720 bfd_put_32 (output_bfd,
10721 LWZ_0_12 + PPC_LO (got + 4), p + 2*4);
10722 bfd_put_32 (output_bfd,
10723 LWZ_12_12 + PPC_LO (got + 8), p + 6*4);
10724 }
10725 else
10726 {
10727 bfd_put_32 (output_bfd,
10728 LWZU_0_12 + PPC_LO (got + 4), p + 2*4);
10729 bfd_put_32 (output_bfd,
10730 LWZ_12_12 + 4, p + 6*4);
10731 }
10732 }
10733 }
10734
10735 if (htab->glink_eh_frame != NULL
10736 && htab->glink_eh_frame->contents != NULL)
10737 {
10738 unsigned char *p = htab->glink_eh_frame->contents;
10739 bfd_vma val;
10740
10741 p += sizeof (glink_eh_frame_cie);
10742 /* FDE length. */
10743 p += 4;
10744 /* CIE pointer. */
10745 p += 4;
10746 /* Offset to .glink. */
10747 val = (htab->glink->output_section->vma
10748 + htab->glink->output_offset);
10749 val -= (htab->glink_eh_frame->output_section->vma
10750 + htab->glink_eh_frame->output_offset);
10751 val -= p - htab->glink_eh_frame->contents;
10752 bfd_put_32 (htab->elf.dynobj, val, p);
10753
10754 if (htab->glink_eh_frame->sec_info_type == SEC_INFO_TYPE_EH_FRAME
10755 && !_bfd_elf_write_section_eh_frame (output_bfd, info,
10756 htab->glink_eh_frame,
10757 htab->glink_eh_frame->contents))
10758 return FALSE;
10759 }
10760
10761 return ret;
10762 }
10763 \f
10764 #define TARGET_LITTLE_SYM powerpc_elf32_le_vec
10765 #define TARGET_LITTLE_NAME "elf32-powerpcle"
10766 #define TARGET_BIG_SYM powerpc_elf32_vec
10767 #define TARGET_BIG_NAME "elf32-powerpc"
10768 #define ELF_ARCH bfd_arch_powerpc
10769 #define ELF_TARGET_ID PPC32_ELF_DATA
10770 #define ELF_MACHINE_CODE EM_PPC
10771 #ifdef __QNXTARGET__
10772 #define ELF_MAXPAGESIZE 0x1000
10773 #define ELF_COMMONPAGESIZE 0x1000
10774 #else
10775 #define ELF_MAXPAGESIZE 0x10000
10776 #define ELF_COMMONPAGESIZE 0x10000
10777 #endif
10778 #define ELF_MINPAGESIZE 0x1000
10779 #define elf_info_to_howto ppc_elf_info_to_howto
10780
10781 #ifdef EM_CYGNUS_POWERPC
10782 #define ELF_MACHINE_ALT1 EM_CYGNUS_POWERPC
10783 #endif
10784
10785 #ifdef EM_PPC_OLD
10786 #define ELF_MACHINE_ALT2 EM_PPC_OLD
10787 #endif
10788
10789 #define elf_backend_plt_not_loaded 1
10790 #define elf_backend_can_gc_sections 1
10791 #define elf_backend_can_refcount 1
10792 #define elf_backend_rela_normal 1
10793 #define elf_backend_caches_rawsize 1
10794
10795 #define bfd_elf32_mkobject ppc_elf_mkobject
10796 #define bfd_elf32_bfd_merge_private_bfd_data ppc_elf_merge_private_bfd_data
10797 #define bfd_elf32_bfd_relax_section ppc_elf_relax_section
10798 #define bfd_elf32_bfd_reloc_type_lookup ppc_elf_reloc_type_lookup
10799 #define bfd_elf32_bfd_reloc_name_lookup ppc_elf_reloc_name_lookup
10800 #define bfd_elf32_bfd_set_private_flags ppc_elf_set_private_flags
10801 #define bfd_elf32_bfd_link_hash_table_create ppc_elf_link_hash_table_create
10802 #define bfd_elf32_get_synthetic_symtab ppc_elf_get_synthetic_symtab
10803
10804 #define elf_backend_object_p ppc_elf_object_p
10805 #define elf_backend_gc_mark_hook ppc_elf_gc_mark_hook
10806 #define elf_backend_gc_sweep_hook ppc_elf_gc_sweep_hook
10807 #define elf_backend_section_from_shdr ppc_elf_section_from_shdr
10808 #define elf_backend_relocate_section ppc_elf_relocate_section
10809 #define elf_backend_create_dynamic_sections ppc_elf_create_dynamic_sections
10810 #define elf_backend_check_relocs ppc_elf_check_relocs
10811 #define elf_backend_copy_indirect_symbol ppc_elf_copy_indirect_symbol
10812 #define elf_backend_adjust_dynamic_symbol ppc_elf_adjust_dynamic_symbol
10813 #define elf_backend_add_symbol_hook ppc_elf_add_symbol_hook
10814 #define elf_backend_size_dynamic_sections ppc_elf_size_dynamic_sections
10815 #define elf_backend_hash_symbol ppc_elf_hash_symbol
10816 #define elf_backend_finish_dynamic_symbol ppc_elf_finish_dynamic_symbol
10817 #define elf_backend_finish_dynamic_sections ppc_elf_finish_dynamic_sections
10818 #define elf_backend_fake_sections ppc_elf_fake_sections
10819 #define elf_backend_additional_program_headers ppc_elf_additional_program_headers
10820 #define elf_backend_modify_segment_map ppc_elf_modify_segment_map
10821 #define elf_backend_grok_prstatus ppc_elf_grok_prstatus
10822 #define elf_backend_grok_psinfo ppc_elf_grok_psinfo
10823 #define elf_backend_write_core_note ppc_elf_write_core_note
10824 #define elf_backend_reloc_type_class ppc_elf_reloc_type_class
10825 #define elf_backend_begin_write_processing ppc_elf_begin_write_processing
10826 #define elf_backend_final_write_processing ppc_elf_final_write_processing
10827 #define elf_backend_write_section ppc_elf_write_section
10828 #define elf_backend_get_sec_type_attr ppc_elf_get_sec_type_attr
10829 #define elf_backend_plt_sym_val ppc_elf_plt_sym_val
10830 #define elf_backend_action_discarded ppc_elf_action_discarded
10831 #define elf_backend_init_index_section _bfd_elf_init_1_index_section
10832 #define elf_backend_lookup_section_flags_hook ppc_elf_lookup_section_flags
10833 #define elf_backend_section_processing ppc_elf_section_processing
10834
10835 #include "elf32-target.h"
10836
10837 /* FreeBSD Target */
10838
10839 #undef TARGET_LITTLE_SYM
10840 #undef TARGET_LITTLE_NAME
10841
10842 #undef TARGET_BIG_SYM
10843 #define TARGET_BIG_SYM powerpc_elf32_fbsd_vec
10844 #undef TARGET_BIG_NAME
10845 #define TARGET_BIG_NAME "elf32-powerpc-freebsd"
10846
10847 #undef ELF_OSABI
10848 #define ELF_OSABI ELFOSABI_FREEBSD
10849
10850 #undef elf32_bed
10851 #define elf32_bed elf32_powerpc_fbsd_bed
10852
10853 #include "elf32-target.h"
10854
10855 /* VxWorks Target */
10856
10857 #undef TARGET_LITTLE_SYM
10858 #undef TARGET_LITTLE_NAME
10859
10860 #undef TARGET_BIG_SYM
10861 #define TARGET_BIG_SYM powerpc_elf32_vxworks_vec
10862 #undef TARGET_BIG_NAME
10863 #define TARGET_BIG_NAME "elf32-powerpc-vxworks"
10864
10865 #undef ELF_OSABI
10866
10867 /* VxWorks uses the elf default section flags for .plt. */
10868 static const struct bfd_elf_special_section *
10869 ppc_elf_vxworks_get_sec_type_attr (bfd *abfd ATTRIBUTE_UNUSED, asection *sec)
10870 {
10871 if (sec->name == NULL)
10872 return NULL;
10873
10874 if (strcmp (sec->name, ".plt") == 0)
10875 return _bfd_elf_get_sec_type_attr (abfd, sec);
10876
10877 return ppc_elf_get_sec_type_attr (abfd, sec);
10878 }
10879
10880 /* Like ppc_elf_link_hash_table_create, but overrides
10881 appropriately for VxWorks. */
10882 static struct bfd_link_hash_table *
10883 ppc_elf_vxworks_link_hash_table_create (bfd *abfd)
10884 {
10885 struct bfd_link_hash_table *ret;
10886
10887 ret = ppc_elf_link_hash_table_create (abfd);
10888 if (ret)
10889 {
10890 struct ppc_elf_link_hash_table *htab
10891 = (struct ppc_elf_link_hash_table *)ret;
10892 htab->is_vxworks = 1;
10893 htab->plt_type = PLT_VXWORKS;
10894 htab->plt_entry_size = VXWORKS_PLT_ENTRY_SIZE;
10895 htab->plt_slot_size = VXWORKS_PLT_ENTRY_SIZE;
10896 htab->plt_initial_entry_size = VXWORKS_PLT_INITIAL_ENTRY_SIZE;
10897 }
10898 return ret;
10899 }
10900
10901 /* Tweak magic VxWorks symbols as they are loaded. */
10902 static bfd_boolean
10903 ppc_elf_vxworks_add_symbol_hook (bfd *abfd,
10904 struct bfd_link_info *info,
10905 Elf_Internal_Sym *sym,
10906 const char **namep ATTRIBUTE_UNUSED,
10907 flagword *flagsp ATTRIBUTE_UNUSED,
10908 asection **secp,
10909 bfd_vma *valp)
10910 {
10911 if (!elf_vxworks_add_symbol_hook(abfd, info, sym,namep, flagsp, secp,
10912 valp))
10913 return FALSE;
10914
10915 return ppc_elf_add_symbol_hook(abfd, info, sym,namep, flagsp, secp, valp);
10916 }
10917
10918 static void
10919 ppc_elf_vxworks_final_write_processing (bfd *abfd, bfd_boolean linker)
10920 {
10921 ppc_elf_final_write_processing(abfd, linker);
10922 elf_vxworks_final_write_processing(abfd, linker);
10923 }
10924
10925 /* On VxWorks, we emit relocations against _PROCEDURE_LINKAGE_TABLE_, so
10926 define it. */
10927 #undef elf_backend_want_plt_sym
10928 #define elf_backend_want_plt_sym 1
10929 #undef elf_backend_want_got_plt
10930 #define elf_backend_want_got_plt 1
10931 #undef elf_backend_got_symbol_offset
10932 #define elf_backend_got_symbol_offset 0
10933 #undef elf_backend_plt_not_loaded
10934 #define elf_backend_plt_not_loaded 0
10935 #undef elf_backend_plt_readonly
10936 #define elf_backend_plt_readonly 1
10937 #undef elf_backend_got_header_size
10938 #define elf_backend_got_header_size 12
10939
10940 #undef bfd_elf32_get_synthetic_symtab
10941
10942 #undef bfd_elf32_bfd_link_hash_table_create
10943 #define bfd_elf32_bfd_link_hash_table_create \
10944 ppc_elf_vxworks_link_hash_table_create
10945 #undef elf_backend_add_symbol_hook
10946 #define elf_backend_add_symbol_hook \
10947 ppc_elf_vxworks_add_symbol_hook
10948 #undef elf_backend_link_output_symbol_hook
10949 #define elf_backend_link_output_symbol_hook \
10950 elf_vxworks_link_output_symbol_hook
10951 #undef elf_backend_final_write_processing
10952 #define elf_backend_final_write_processing \
10953 ppc_elf_vxworks_final_write_processing
10954 #undef elf_backend_get_sec_type_attr
10955 #define elf_backend_get_sec_type_attr \
10956 ppc_elf_vxworks_get_sec_type_attr
10957 #undef elf_backend_emit_relocs
10958 #define elf_backend_emit_relocs \
10959 elf_vxworks_emit_relocs
10960
10961 #undef elf32_bed
10962 #define elf32_bed ppc_elf_vxworks_bed
10963 #undef elf_backend_post_process_headers
10964
10965 #include "elf32-target.h"
GDB Binutils - Deliverables
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