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Fix some PowerPC VLE BFD issues and add some PowerPC VLE instructions.
[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 ppc_elf_unhandled_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 ppc_elf_unhandled_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 ppc_elf_unhandled_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_unhandled_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 ppc_elf_unhandled_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 ppc_elf_unhandled_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 ppc_elf_unhandled_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 ppc_elf_unhandled_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 ppc_elf_unhandled_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 ppc_elf_unhandled_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 ppc_elf_unhandled_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 ppc_elf_unhandled_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_unhandled_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 ppc_elf_unhandled_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 ppc_elf_unhandled_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 ppc_elf_unhandled_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 ppc_elf_unhandled_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_unhandled_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 ppc_elf_unhandled_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 ppc_elf_unhandled_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 ppc_elf_unhandled_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 ppc_elf_unhandled_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_unhandled_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 ppc_elf_unhandled_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 ppc_elf_unhandled_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 ppc_elf_unhandled_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 ppc_elf_unhandled_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 ppc_elf_unhandled_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 0xfffe, /* 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 ppc_elf_unhandled_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 ppc_elf_unhandled_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 ppc_elf_unhandled_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 ppc_elf_unhandled_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 ppc_elf_unhandled_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 ppc_elf_unhandled_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 ppc_elf_unhandled_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 ppc_elf_unhandled_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 ppc_elf_unhandled_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 ppc_elf_unhandled_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 ppc_elf_unhandled_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 ppc_elf_unhandled_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 ppc_elf_unhandled_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 ppc_elf_unhandled_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 ppc_elf_unhandled_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 ppc_elf_unhandled_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 || r_type == R_PPC_VLE_REL24);
3953 }
3954
3955 static void
3956 bad_shared_reloc (bfd *abfd, enum elf_ppc_reloc_type r_type)
3957 {
3958 (*_bfd_error_handler)
3959 (_("%B: relocation %s cannot be used when making a shared object"),
3960 abfd,
3961 ppc_elf_howto_table[r_type]->name);
3962 bfd_set_error (bfd_error_bad_value);
3963 }
3964
3965 /* Look through the relocs for a section during the first phase, and
3966 allocate space in the global offset table or procedure linkage
3967 table. */
3968
3969 static bfd_boolean
3970 ppc_elf_check_relocs (bfd *abfd,
3971 struct bfd_link_info *info,
3972 asection *sec,
3973 const Elf_Internal_Rela *relocs)
3974 {
3975 struct ppc_elf_link_hash_table *htab;
3976 Elf_Internal_Shdr *symtab_hdr;
3977 struct elf_link_hash_entry **sym_hashes;
3978 const Elf_Internal_Rela *rel;
3979 const Elf_Internal_Rela *rel_end;
3980 asection *got2, *sreloc;
3981 struct elf_link_hash_entry *tga;
3982
3983 if (bfd_link_relocatable (info))
3984 return TRUE;
3985
3986 /* Don't do anything special with non-loaded, non-alloced sections.
3987 In particular, any relocs in such sections should not affect GOT
3988 and PLT reference counting (ie. we don't allow them to create GOT
3989 or PLT entries), there's no possibility or desire to optimize TLS
3990 relocs, and there's not much point in propagating relocs to shared
3991 libs that the dynamic linker won't relocate. */
3992 if ((sec->flags & SEC_ALLOC) == 0)
3993 return TRUE;
3994
3995 #ifdef DEBUG
3996 _bfd_error_handler ("ppc_elf_check_relocs called for section %A in %B",
3997 sec, abfd);
3998 #endif
3999
4000 BFD_ASSERT (is_ppc_elf (abfd));
4001
4002 /* Initialize howto table if not already done. */
4003 if (!ppc_elf_howto_table[R_PPC_ADDR32])
4004 ppc_elf_howto_init ();
4005
4006 htab = ppc_elf_hash_table (info);
4007 if (htab->glink == NULL)
4008 {
4009 if (htab->elf.dynobj == NULL)
4010 htab->elf.dynobj = abfd;
4011 if (!ppc_elf_create_glink (htab->elf.dynobj, info))
4012 return FALSE;
4013 }
4014 tga = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
4015 FALSE, FALSE, TRUE);
4016 symtab_hdr = &elf_symtab_hdr (abfd);
4017 sym_hashes = elf_sym_hashes (abfd);
4018 got2 = bfd_get_section_by_name (abfd, ".got2");
4019 sreloc = NULL;
4020
4021 rel_end = relocs + sec->reloc_count;
4022 for (rel = relocs; rel < rel_end; rel++)
4023 {
4024 unsigned long r_symndx;
4025 enum elf_ppc_reloc_type r_type;
4026 struct elf_link_hash_entry *h;
4027 int tls_type;
4028 struct plt_entry **ifunc;
4029
4030 r_symndx = ELF32_R_SYM (rel->r_info);
4031 if (r_symndx < symtab_hdr->sh_info)
4032 h = NULL;
4033 else
4034 {
4035 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4036 while (h->root.type == bfd_link_hash_indirect
4037 || h->root.type == bfd_link_hash_warning)
4038 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4039
4040 /* PR15323, ref flags aren't set for references in the same
4041 object. */
4042 h->root.non_ir_ref = 1;
4043 }
4044
4045 /* If a relocation refers to _GLOBAL_OFFSET_TABLE_, create the .got.
4046 This shows up in particular in an R_PPC_ADDR32 in the eabi
4047 startup code. */
4048 if (h != NULL
4049 && htab->got == NULL
4050 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
4051 {
4052 if (htab->elf.dynobj == NULL)
4053 htab->elf.dynobj = abfd;
4054 if (!ppc_elf_create_got (htab->elf.dynobj, info))
4055 return FALSE;
4056 BFD_ASSERT (h == htab->elf.hgot);
4057 }
4058
4059 tls_type = 0;
4060 r_type = ELF32_R_TYPE (rel->r_info);
4061 ifunc = NULL;
4062 if (h == NULL && !htab->is_vxworks)
4063 {
4064 Elf_Internal_Sym *isym = bfd_sym_from_r_symndx (&htab->sym_cache,
4065 abfd, r_symndx);
4066 if (isym == NULL)
4067 return FALSE;
4068
4069 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
4070 {
4071 /* Set PLT_IFUNC flag for this sym, no GOT entry yet. */
4072 ifunc = update_local_sym_info (abfd, symtab_hdr, r_symndx,
4073 PLT_IFUNC);
4074 if (ifunc == NULL)
4075 return FALSE;
4076
4077 /* STT_GNU_IFUNC symbols must have a PLT entry;
4078 In a non-pie executable even when there are
4079 no plt calls. */
4080 if (!bfd_link_pic (info)
4081 || is_branch_reloc (r_type))
4082 {
4083 bfd_vma addend = 0;
4084 if (r_type == R_PPC_PLTREL24)
4085 {
4086 ppc_elf_tdata (abfd)->makes_plt_call = 1;
4087 if (bfd_link_pic (info))
4088 addend = rel->r_addend;
4089 }
4090 if (!update_plt_info (abfd, ifunc, got2, addend))
4091 return FALSE;
4092 }
4093 }
4094 }
4095
4096 if (!htab->is_vxworks
4097 && is_branch_reloc (r_type)
4098 && h != NULL
4099 && h == tga)
4100 {
4101 if (rel != relocs
4102 && (ELF32_R_TYPE (rel[-1].r_info) == R_PPC_TLSGD
4103 || ELF32_R_TYPE (rel[-1].r_info) == R_PPC_TLSLD))
4104 /* We have a new-style __tls_get_addr call with a marker
4105 reloc. */
4106 ;
4107 else
4108 /* Mark this section as having an old-style call. */
4109 sec->has_tls_get_addr_call = 1;
4110 }
4111
4112 switch (r_type)
4113 {
4114 case R_PPC_TLSGD:
4115 case R_PPC_TLSLD:
4116 /* These special tls relocs tie a call to __tls_get_addr with
4117 its parameter symbol. */
4118 break;
4119
4120 case R_PPC_GOT_TLSLD16:
4121 case R_PPC_GOT_TLSLD16_LO:
4122 case R_PPC_GOT_TLSLD16_HI:
4123 case R_PPC_GOT_TLSLD16_HA:
4124 tls_type = TLS_TLS | TLS_LD;
4125 goto dogottls;
4126
4127 case R_PPC_GOT_TLSGD16:
4128 case R_PPC_GOT_TLSGD16_LO:
4129 case R_PPC_GOT_TLSGD16_HI:
4130 case R_PPC_GOT_TLSGD16_HA:
4131 tls_type = TLS_TLS | TLS_GD;
4132 goto dogottls;
4133
4134 case R_PPC_GOT_TPREL16:
4135 case R_PPC_GOT_TPREL16_LO:
4136 case R_PPC_GOT_TPREL16_HI:
4137 case R_PPC_GOT_TPREL16_HA:
4138 if (bfd_link_pic (info))
4139 info->flags |= DF_STATIC_TLS;
4140 tls_type = TLS_TLS | TLS_TPREL;
4141 goto dogottls;
4142
4143 case R_PPC_GOT_DTPREL16:
4144 case R_PPC_GOT_DTPREL16_LO:
4145 case R_PPC_GOT_DTPREL16_HI:
4146 case R_PPC_GOT_DTPREL16_HA:
4147 tls_type = TLS_TLS | TLS_DTPREL;
4148 dogottls:
4149 sec->has_tls_reloc = 1;
4150 /* Fall thru */
4151
4152 /* GOT16 relocations */
4153 case R_PPC_GOT16:
4154 case R_PPC_GOT16_LO:
4155 case R_PPC_GOT16_HI:
4156 case R_PPC_GOT16_HA:
4157 /* This symbol requires a global offset table entry. */
4158 if (htab->got == NULL)
4159 {
4160 if (htab->elf.dynobj == NULL)
4161 htab->elf.dynobj = abfd;
4162 if (!ppc_elf_create_got (htab->elf.dynobj, info))
4163 return FALSE;
4164 }
4165 if (h != NULL)
4166 {
4167 h->got.refcount += 1;
4168 ppc_elf_hash_entry (h)->tls_mask |= tls_type;
4169 }
4170 else
4171 /* This is a global offset table entry for a local symbol. */
4172 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, tls_type))
4173 return FALSE;
4174
4175 /* We may also need a plt entry if the symbol turns out to be
4176 an ifunc. */
4177 if (h != NULL && !bfd_link_pic (info))
4178 {
4179 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
4180 return FALSE;
4181 }
4182 break;
4183
4184 /* Indirect .sdata relocation. */
4185 case R_PPC_EMB_SDAI16:
4186 if (bfd_link_pic (info))
4187 {
4188 bad_shared_reloc (abfd, r_type);
4189 return FALSE;
4190 }
4191 htab->sdata[0].sym->ref_regular = 1;
4192 if (!elf_allocate_pointer_linker_section (abfd, &htab->sdata[0],
4193 h, rel))
4194 return FALSE;
4195 if (h != NULL)
4196 {
4197 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4198 h->non_got_ref = TRUE;
4199 }
4200 break;
4201
4202 /* Indirect .sdata2 relocation. */
4203 case R_PPC_EMB_SDA2I16:
4204 if (bfd_link_pic (info))
4205 {
4206 bad_shared_reloc (abfd, r_type);
4207 return FALSE;
4208 }
4209 htab->sdata[1].sym->ref_regular = 1;
4210 if (!elf_allocate_pointer_linker_section (abfd, &htab->sdata[1],
4211 h, rel))
4212 return FALSE;
4213 if (h != NULL)
4214 {
4215 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4216 h->non_got_ref = TRUE;
4217 }
4218 break;
4219
4220 case R_PPC_SDAREL16:
4221 htab->sdata[0].sym->ref_regular = 1;
4222 /* Fall thru */
4223
4224 case R_PPC_VLE_SDAREL_LO16A:
4225 case R_PPC_VLE_SDAREL_LO16D:
4226 case R_PPC_VLE_SDAREL_HI16A:
4227 case R_PPC_VLE_SDAREL_HI16D:
4228 case R_PPC_VLE_SDAREL_HA16A:
4229 case R_PPC_VLE_SDAREL_HA16D:
4230 if (h != NULL)
4231 {
4232 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4233 h->non_got_ref = TRUE;
4234 }
4235 break;
4236
4237 case R_PPC_VLE_REL8:
4238 case R_PPC_VLE_REL15:
4239 case R_PPC_VLE_REL24:
4240 case R_PPC_VLE_LO16A:
4241 case R_PPC_VLE_LO16D:
4242 case R_PPC_VLE_HI16A:
4243 case R_PPC_VLE_HI16D:
4244 case R_PPC_VLE_HA16A:
4245 case R_PPC_VLE_HA16D:
4246 break;
4247
4248 case R_PPC_EMB_SDA2REL:
4249 if (bfd_link_pic (info))
4250 {
4251 bad_shared_reloc (abfd, r_type);
4252 return FALSE;
4253 }
4254 htab->sdata[1].sym->ref_regular = 1;
4255 if (h != NULL)
4256 {
4257 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4258 h->non_got_ref = TRUE;
4259 }
4260 break;
4261
4262 case R_PPC_VLE_SDA21_LO:
4263 case R_PPC_VLE_SDA21:
4264 case R_PPC_EMB_SDA21:
4265 case R_PPC_EMB_RELSDA:
4266 if (bfd_link_pic (info))
4267 {
4268 bad_shared_reloc (abfd, r_type);
4269 return FALSE;
4270 }
4271 if (h != NULL)
4272 {
4273 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4274 h->non_got_ref = TRUE;
4275 }
4276 break;
4277
4278 case R_PPC_EMB_NADDR32:
4279 case R_PPC_EMB_NADDR16:
4280 case R_PPC_EMB_NADDR16_LO:
4281 case R_PPC_EMB_NADDR16_HI:
4282 case R_PPC_EMB_NADDR16_HA:
4283 if (bfd_link_pic (info))
4284 {
4285 bad_shared_reloc (abfd, r_type);
4286 return FALSE;
4287 }
4288 if (h != NULL)
4289 h->non_got_ref = TRUE;
4290 break;
4291
4292 case R_PPC_PLTREL24:
4293 if (h == NULL)
4294 break;
4295 /* Fall through */
4296 case R_PPC_PLT32:
4297 case R_PPC_PLTREL32:
4298 case R_PPC_PLT16_LO:
4299 case R_PPC_PLT16_HI:
4300 case R_PPC_PLT16_HA:
4301 #ifdef DEBUG
4302 fprintf (stderr, "Reloc requires a PLT entry\n");
4303 #endif
4304 /* This symbol requires a procedure linkage table entry. */
4305 if (h == NULL)
4306 {
4307 if (ifunc == NULL)
4308 {
4309 /* It does not make sense to have a procedure linkage
4310 table entry for a non-ifunc local symbol. */
4311 info->callbacks->einfo
4312 (_("%P: %H: %s reloc against local symbol\n"),
4313 abfd, sec, rel->r_offset,
4314 ppc_elf_howto_table[r_type]->name);
4315 bfd_set_error (bfd_error_bad_value);
4316 return FALSE;
4317 }
4318 }
4319 else
4320 {
4321 bfd_vma addend = 0;
4322
4323 if (r_type == R_PPC_PLTREL24)
4324 {
4325 ppc_elf_tdata (abfd)->makes_plt_call = 1;
4326 if (bfd_link_pic (info))
4327 addend = rel->r_addend;
4328 }
4329 h->needs_plt = 1;
4330 if (!update_plt_info (abfd, &h->plt.plist, got2, addend))
4331 return FALSE;
4332 }
4333 break;
4334
4335 /* The following relocations don't need to propagate the
4336 relocation if linking a shared object since they are
4337 section relative. */
4338 case R_PPC_SECTOFF:
4339 case R_PPC_SECTOFF_LO:
4340 case R_PPC_SECTOFF_HI:
4341 case R_PPC_SECTOFF_HA:
4342 case R_PPC_DTPREL16:
4343 case R_PPC_DTPREL16_LO:
4344 case R_PPC_DTPREL16_HI:
4345 case R_PPC_DTPREL16_HA:
4346 case R_PPC_TOC16:
4347 break;
4348
4349 case R_PPC_REL16:
4350 case R_PPC_REL16_LO:
4351 case R_PPC_REL16_HI:
4352 case R_PPC_REL16_HA:
4353 case R_PPC_REL16DX_HA:
4354 ppc_elf_tdata (abfd)->has_rel16 = 1;
4355 break;
4356
4357 /* These are just markers. */
4358 case R_PPC_TLS:
4359 case R_PPC_EMB_MRKREF:
4360 case R_PPC_NONE:
4361 case R_PPC_max:
4362 case R_PPC_RELAX:
4363 case R_PPC_RELAX_PLT:
4364 case R_PPC_RELAX_PLTREL24:
4365 break;
4366
4367 /* These should only appear in dynamic objects. */
4368 case R_PPC_COPY:
4369 case R_PPC_GLOB_DAT:
4370 case R_PPC_JMP_SLOT:
4371 case R_PPC_RELATIVE:
4372 case R_PPC_IRELATIVE:
4373 break;
4374
4375 /* These aren't handled yet. We'll report an error later. */
4376 case R_PPC_ADDR30:
4377 case R_PPC_EMB_RELSEC16:
4378 case R_PPC_EMB_RELST_LO:
4379 case R_PPC_EMB_RELST_HI:
4380 case R_PPC_EMB_RELST_HA:
4381 case R_PPC_EMB_BIT_FLD:
4382 break;
4383
4384 /* This refers only to functions defined in the shared library. */
4385 case R_PPC_LOCAL24PC:
4386 if (h != NULL && h == htab->elf.hgot && htab->plt_type == PLT_UNSET)
4387 {
4388 htab->plt_type = PLT_OLD;
4389 htab->old_bfd = abfd;
4390 }
4391 if (h != NULL && h->type == STT_GNU_IFUNC)
4392 {
4393 if (bfd_link_pic (info))
4394 {
4395 info->callbacks->einfo
4396 (_("%P: %H: @local call to ifunc %s\n"),
4397 abfd, sec, rel->r_offset,
4398 h->root.root.string);
4399 bfd_set_error (bfd_error_bad_value);
4400 return FALSE;
4401 }
4402 h->needs_plt = 1;
4403 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
4404 return FALSE;
4405 }
4406 break;
4407
4408 /* This relocation describes the C++ object vtable hierarchy.
4409 Reconstruct it for later use during GC. */
4410 case R_PPC_GNU_VTINHERIT:
4411 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
4412 return FALSE;
4413 break;
4414
4415 /* This relocation describes which C++ vtable entries are actually
4416 used. Record for later use during GC. */
4417 case R_PPC_GNU_VTENTRY:
4418 BFD_ASSERT (h != NULL);
4419 if (h != NULL
4420 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
4421 return FALSE;
4422 break;
4423
4424 /* We shouldn't really be seeing these. */
4425 case R_PPC_TPREL32:
4426 case R_PPC_TPREL16:
4427 case R_PPC_TPREL16_LO:
4428 case R_PPC_TPREL16_HI:
4429 case R_PPC_TPREL16_HA:
4430 if (bfd_link_pic (info))
4431 info->flags |= DF_STATIC_TLS;
4432 goto dodyn;
4433
4434 /* Nor these. */
4435 case R_PPC_DTPMOD32:
4436 case R_PPC_DTPREL32:
4437 goto dodyn;
4438
4439 case R_PPC_REL32:
4440 if (h == NULL
4441 && got2 != NULL
4442 && (sec->flags & SEC_CODE) != 0
4443 && bfd_link_pic (info)
4444 && htab->plt_type == PLT_UNSET)
4445 {
4446 /* Old -fPIC gcc code has .long LCTOC1-LCFx just before
4447 the start of a function, which assembles to a REL32
4448 reference to .got2. If we detect one of these, then
4449 force the old PLT layout because the linker cannot
4450 reliably deduce the GOT pointer value needed for
4451 PLT call stubs. */
4452 asection *s;
4453 Elf_Internal_Sym *isym;
4454
4455 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
4456 abfd, r_symndx);
4457 if (isym == NULL)
4458 return FALSE;
4459
4460 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
4461 if (s == got2)
4462 {
4463 htab->plt_type = PLT_OLD;
4464 htab->old_bfd = abfd;
4465 }
4466 }
4467 if (h == NULL || h == htab->elf.hgot)
4468 break;
4469 /* fall through */
4470
4471 case R_PPC_ADDR32:
4472 case R_PPC_ADDR16:
4473 case R_PPC_ADDR16_LO:
4474 case R_PPC_ADDR16_HI:
4475 case R_PPC_ADDR16_HA:
4476 case R_PPC_UADDR32:
4477 case R_PPC_UADDR16:
4478 if (h != NULL && !bfd_link_pic (info))
4479 {
4480 /* We may need a plt entry if the symbol turns out to be
4481 a function defined in a dynamic object. */
4482 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
4483 return FALSE;
4484
4485 /* We may need a copy reloc too. */
4486 h->non_got_ref = 1;
4487 h->pointer_equality_needed = 1;
4488 if (r_type == R_PPC_ADDR16_HA)
4489 ppc_elf_hash_entry (h)->has_addr16_ha = 1;
4490 if (r_type == R_PPC_ADDR16_LO)
4491 ppc_elf_hash_entry (h)->has_addr16_lo = 1;
4492 }
4493 goto dodyn;
4494
4495 case R_PPC_REL24:
4496 case R_PPC_REL14:
4497 case R_PPC_REL14_BRTAKEN:
4498 case R_PPC_REL14_BRNTAKEN:
4499 if (h == NULL)
4500 break;
4501 if (h == htab->elf.hgot)
4502 {
4503 if (htab->plt_type == PLT_UNSET)
4504 {
4505 htab->plt_type = PLT_OLD;
4506 htab->old_bfd = abfd;
4507 }
4508 break;
4509 }
4510 /* fall through */
4511
4512 case R_PPC_ADDR24:
4513 case R_PPC_ADDR14:
4514 case R_PPC_ADDR14_BRTAKEN:
4515 case R_PPC_ADDR14_BRNTAKEN:
4516 if (h != NULL && !bfd_link_pic (info))
4517 {
4518 /* We may need a plt entry if the symbol turns out to be
4519 a function defined in a dynamic object. */
4520 h->needs_plt = 1;
4521 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
4522 return FALSE;
4523 break;
4524 }
4525
4526 dodyn:
4527 /* If we are creating a shared library, and this is a reloc
4528 against a global symbol, or a non PC relative reloc
4529 against a local symbol, then we need to copy the reloc
4530 into the shared library. However, if we are linking with
4531 -Bsymbolic, we do not need to copy a reloc against a
4532 global symbol which is defined in an object we are
4533 including in the link (i.e., DEF_REGULAR is set). At
4534 this point we have not seen all the input files, so it is
4535 possible that DEF_REGULAR is not set now but will be set
4536 later (it is never cleared). In case of a weak definition,
4537 DEF_REGULAR may be cleared later by a strong definition in
4538 a shared library. We account for that possibility below by
4539 storing information in the dyn_relocs field of the hash
4540 table entry. A similar situation occurs when creating
4541 shared libraries and symbol visibility changes render the
4542 symbol local.
4543
4544 If on the other hand, we are creating an executable, we
4545 may need to keep relocations for symbols satisfied by a
4546 dynamic library if we manage to avoid copy relocs for the
4547 symbol. */
4548 if ((bfd_link_pic (info)
4549 && (must_be_dyn_reloc (info, r_type)
4550 || (h != NULL
4551 && (!SYMBOLIC_BIND (info, h)
4552 || h->root.type == bfd_link_hash_defweak
4553 || !h->def_regular))))
4554 || (ELIMINATE_COPY_RELOCS
4555 && !bfd_link_pic (info)
4556 && h != NULL
4557 && (h->root.type == bfd_link_hash_defweak
4558 || !h->def_regular)))
4559 {
4560 #ifdef DEBUG
4561 fprintf (stderr,
4562 "ppc_elf_check_relocs needs to "
4563 "create relocation for %s\n",
4564 (h && h->root.root.string
4565 ? h->root.root.string : "<unknown>"));
4566 #endif
4567 if (sreloc == NULL)
4568 {
4569 if (htab->elf.dynobj == NULL)
4570 htab->elf.dynobj = abfd;
4571
4572 sreloc = _bfd_elf_make_dynamic_reloc_section
4573 (sec, htab->elf.dynobj, 2, abfd, /*rela?*/ TRUE);
4574
4575 if (sreloc == NULL)
4576 return FALSE;
4577 }
4578
4579 /* If this is a global symbol, we count the number of
4580 relocations we need for this symbol. */
4581 if (h != NULL)
4582 {
4583 struct elf_dyn_relocs *p;
4584 struct elf_dyn_relocs **rel_head;
4585
4586 rel_head = &ppc_elf_hash_entry (h)->dyn_relocs;
4587 p = *rel_head;
4588 if (p == NULL || p->sec != sec)
4589 {
4590 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
4591 if (p == NULL)
4592 return FALSE;
4593 p->next = *rel_head;
4594 *rel_head = p;
4595 p->sec = sec;
4596 p->count = 0;
4597 p->pc_count = 0;
4598 }
4599 p->count += 1;
4600 if (!must_be_dyn_reloc (info, r_type))
4601 p->pc_count += 1;
4602 }
4603 else
4604 {
4605 /* Track dynamic relocs needed for local syms too.
4606 We really need local syms available to do this
4607 easily. Oh well. */
4608 struct ppc_dyn_relocs *p;
4609 struct ppc_dyn_relocs **rel_head;
4610 bfd_boolean is_ifunc;
4611 asection *s;
4612 void *vpp;
4613 Elf_Internal_Sym *isym;
4614
4615 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
4616 abfd, r_symndx);
4617 if (isym == NULL)
4618 return FALSE;
4619
4620 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
4621 if (s == NULL)
4622 s = sec;
4623
4624 vpp = &elf_section_data (s)->local_dynrel;
4625 rel_head = (struct ppc_dyn_relocs **) vpp;
4626 is_ifunc = ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC;
4627 p = *rel_head;
4628 if (p != NULL && p->sec == sec && p->ifunc != is_ifunc)
4629 p = p->next;
4630 if (p == NULL || p->sec != sec || p->ifunc != is_ifunc)
4631 {
4632 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
4633 if (p == NULL)
4634 return FALSE;
4635 p->next = *rel_head;
4636 *rel_head = p;
4637 p->sec = sec;
4638 p->ifunc = is_ifunc;
4639 p->count = 0;
4640 }
4641 p->count += 1;
4642 }
4643 }
4644
4645 break;
4646 }
4647 }
4648
4649 return TRUE;
4650 }
4651 \f
4652
4653 /* Merge object attributes from IBFD into OBFD. Raise an error if
4654 there are conflicting attributes. */
4655 static bfd_boolean
4656 ppc_elf_merge_obj_attributes (bfd *ibfd, bfd *obfd)
4657 {
4658 obj_attribute *in_attr, *in_attrs;
4659 obj_attribute *out_attr, *out_attrs;
4660
4661 if (!elf_known_obj_attributes_proc (obfd)[0].i)
4662 {
4663 /* This is the first object. Copy the attributes. */
4664 _bfd_elf_copy_obj_attributes (ibfd, obfd);
4665
4666 /* Use the Tag_null value to indicate the attributes have been
4667 initialized. */
4668 elf_known_obj_attributes_proc (obfd)[0].i = 1;
4669
4670 return TRUE;
4671 }
4672
4673 in_attrs = elf_known_obj_attributes (ibfd)[OBJ_ATTR_GNU];
4674 out_attrs = elf_known_obj_attributes (obfd)[OBJ_ATTR_GNU];
4675
4676 /* Check for conflicting Tag_GNU_Power_ABI_FP attributes and merge
4677 non-conflicting ones. */
4678 in_attr = &in_attrs[Tag_GNU_Power_ABI_FP];
4679 out_attr = &out_attrs[Tag_GNU_Power_ABI_FP];
4680 if (in_attr->i != out_attr->i)
4681 {
4682 out_attr->type = 1;
4683 if (out_attr->i == 0)
4684 out_attr->i = in_attr->i;
4685 else if (in_attr->i == 0)
4686 ;
4687 else if (out_attr->i == 1 && in_attr->i == 2)
4688 _bfd_error_handler
4689 (_("Warning: %B uses hard float, %B uses soft float"), obfd, ibfd);
4690 else if (out_attr->i == 1 && in_attr->i == 3)
4691 _bfd_error_handler
4692 (_("Warning: %B uses double-precision hard float, %B uses single-precision hard float"),
4693 obfd, ibfd);
4694 else if (out_attr->i == 3 && in_attr->i == 1)
4695 _bfd_error_handler
4696 (_("Warning: %B uses double-precision hard float, %B uses single-precision hard float"),
4697 ibfd, obfd);
4698 else if (out_attr->i == 3 && in_attr->i == 2)
4699 _bfd_error_handler
4700 (_("Warning: %B uses soft float, %B uses single-precision hard float"),
4701 ibfd, obfd);
4702 else if (out_attr->i == 2 && (in_attr->i == 1 || in_attr->i == 3))
4703 _bfd_error_handler
4704 (_("Warning: %B uses hard float, %B uses soft float"), ibfd, obfd);
4705 else if (in_attr->i > 3)
4706 _bfd_error_handler
4707 (_("Warning: %B uses unknown floating point ABI %d"), ibfd,
4708 in_attr->i);
4709 else
4710 _bfd_error_handler
4711 (_("Warning: %B uses unknown floating point ABI %d"), obfd,
4712 out_attr->i);
4713 }
4714
4715 /* Check for conflicting Tag_GNU_Power_ABI_Vector attributes and
4716 merge non-conflicting ones. */
4717 in_attr = &in_attrs[Tag_GNU_Power_ABI_Vector];
4718 out_attr = &out_attrs[Tag_GNU_Power_ABI_Vector];
4719 if (in_attr->i != out_attr->i)
4720 {
4721 const char *in_abi = NULL, *out_abi = NULL;
4722
4723 switch (in_attr->i)
4724 {
4725 case 1: in_abi = "generic"; break;
4726 case 2: in_abi = "AltiVec"; break;
4727 case 3: in_abi = "SPE"; break;
4728 }
4729
4730 switch (out_attr->i)
4731 {
4732 case 1: out_abi = "generic"; break;
4733 case 2: out_abi = "AltiVec"; break;
4734 case 3: out_abi = "SPE"; break;
4735 }
4736
4737 out_attr->type = 1;
4738 if (out_attr->i == 0)
4739 out_attr->i = in_attr->i;
4740 else if (in_attr->i == 0)
4741 ;
4742 /* For now, allow generic to transition to AltiVec or SPE
4743 without a warning. If GCC marked files with their stack
4744 alignment and used don't-care markings for files which are
4745 not affected by the vector ABI, we could warn about this
4746 case too. */
4747 else if (out_attr->i == 1)
4748 out_attr->i = in_attr->i;
4749 else if (in_attr->i == 1)
4750 ;
4751 else if (in_abi == NULL)
4752 _bfd_error_handler
4753 (_("Warning: %B uses unknown vector ABI %d"), ibfd,
4754 in_attr->i);
4755 else if (out_abi == NULL)
4756 _bfd_error_handler
4757 (_("Warning: %B uses unknown vector ABI %d"), obfd,
4758 in_attr->i);
4759 else
4760 _bfd_error_handler
4761 (_("Warning: %B uses vector ABI \"%s\", %B uses \"%s\""),
4762 ibfd, obfd, in_abi, out_abi);
4763 }
4764
4765 /* Check for conflicting Tag_GNU_Power_ABI_Struct_Return attributes
4766 and merge non-conflicting ones. */
4767 in_attr = &in_attrs[Tag_GNU_Power_ABI_Struct_Return];
4768 out_attr = &out_attrs[Tag_GNU_Power_ABI_Struct_Return];
4769 if (in_attr->i != out_attr->i)
4770 {
4771 out_attr->type = 1;
4772 if (out_attr->i == 0)
4773 out_attr->i = in_attr->i;
4774 else if (in_attr->i == 0)
4775 ;
4776 else if (out_attr->i == 1 && in_attr->i == 2)
4777 _bfd_error_handler
4778 (_("Warning: %B uses r3/r4 for small structure returns, %B uses memory"), obfd, ibfd);
4779 else if (out_attr->i == 2 && in_attr->i == 1)
4780 _bfd_error_handler
4781 (_("Warning: %B uses r3/r4 for small structure returns, %B uses memory"), ibfd, obfd);
4782 else if (in_attr->i > 2)
4783 _bfd_error_handler
4784 (_("Warning: %B uses unknown small structure return convention %d"), ibfd,
4785 in_attr->i);
4786 else
4787 _bfd_error_handler
4788 (_("Warning: %B uses unknown small structure return convention %d"), obfd,
4789 out_attr->i);
4790 }
4791
4792 /* Merge Tag_compatibility attributes and any common GNU ones. */
4793 _bfd_elf_merge_object_attributes (ibfd, obfd);
4794
4795 return TRUE;
4796 }
4797
4798 /* Merge backend specific data from an object file to the output
4799 object file when linking. */
4800
4801 static bfd_boolean
4802 ppc_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
4803 {
4804 flagword old_flags;
4805 flagword new_flags;
4806 bfd_boolean error;
4807
4808 if (!is_ppc_elf (ibfd) || !is_ppc_elf (obfd))
4809 return TRUE;
4810
4811 /* Check if we have the same endianness. */
4812 if (! _bfd_generic_verify_endian_match (ibfd, obfd))
4813 return FALSE;
4814
4815 if (!ppc_elf_merge_obj_attributes (ibfd, obfd))
4816 return FALSE;
4817
4818 new_flags = elf_elfheader (ibfd)->e_flags;
4819 old_flags = elf_elfheader (obfd)->e_flags;
4820 if (!elf_flags_init (obfd))
4821 {
4822 /* First call, no flags set. */
4823 elf_flags_init (obfd) = TRUE;
4824 elf_elfheader (obfd)->e_flags = new_flags;
4825 }
4826
4827 /* Compatible flags are ok. */
4828 else if (new_flags == old_flags)
4829 ;
4830
4831 /* Incompatible flags. */
4832 else
4833 {
4834 /* Warn about -mrelocatable mismatch. Allow -mrelocatable-lib
4835 to be linked with either. */
4836 error = FALSE;
4837 if ((new_flags & EF_PPC_RELOCATABLE) != 0
4838 && (old_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0)
4839 {
4840 error = TRUE;
4841 (*_bfd_error_handler)
4842 (_("%B: compiled with -mrelocatable and linked with "
4843 "modules compiled normally"), ibfd);
4844 }
4845 else if ((new_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0
4846 && (old_flags & EF_PPC_RELOCATABLE) != 0)
4847 {
4848 error = TRUE;
4849 (*_bfd_error_handler)
4850 (_("%B: compiled normally and linked with "
4851 "modules compiled with -mrelocatable"), ibfd);
4852 }
4853
4854 /* The output is -mrelocatable-lib iff both the input files are. */
4855 if (! (new_flags & EF_PPC_RELOCATABLE_LIB))
4856 elf_elfheader (obfd)->e_flags &= ~EF_PPC_RELOCATABLE_LIB;
4857
4858 /* The output is -mrelocatable iff it can't be -mrelocatable-lib,
4859 but each input file is either -mrelocatable or -mrelocatable-lib. */
4860 if (! (elf_elfheader (obfd)->e_flags & EF_PPC_RELOCATABLE_LIB)
4861 && (new_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE))
4862 && (old_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE)))
4863 elf_elfheader (obfd)->e_flags |= EF_PPC_RELOCATABLE;
4864
4865 /* Do not warn about eabi vs. V.4 mismatch, just or in the bit if
4866 any module uses it. */
4867 elf_elfheader (obfd)->e_flags |= (new_flags & EF_PPC_EMB);
4868
4869 new_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
4870 old_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
4871
4872 /* Warn about any other mismatches. */
4873 if (new_flags != old_flags)
4874 {
4875 error = TRUE;
4876 (*_bfd_error_handler)
4877 (_("%B: uses different e_flags (0x%lx) fields "
4878 "than previous modules (0x%lx)"),
4879 ibfd, (long) new_flags, (long) old_flags);
4880 }
4881
4882 if (error)
4883 {
4884 bfd_set_error (bfd_error_bad_value);
4885 return FALSE;
4886 }
4887 }
4888
4889 return TRUE;
4890 }
4891
4892 static void
4893 ppc_elf_vle_split16 (bfd *output_bfd, bfd_byte *loc,
4894 bfd_vma value,
4895 split16_format_type split16_format)
4896
4897 {
4898 unsigned int insn, top5;
4899
4900 insn = bfd_get_32 (output_bfd, loc);
4901 top5 = value & 0xf800;
4902 top5 = top5 << (split16_format == split16a_type ? 9 : 5);
4903 insn &= (split16_format == split16a_type ? ~0x1f007ff : ~0x1f07ff);
4904 insn |= top5;
4905 insn |= value & 0x7ff;
4906 bfd_put_32 (output_bfd, insn, loc);
4907 }
4908
4909 \f
4910 /* Choose which PLT scheme to use, and set .plt flags appropriately.
4911 Returns -1 on error, 0 for old PLT, 1 for new PLT. */
4912 int
4913 ppc_elf_select_plt_layout (bfd *output_bfd ATTRIBUTE_UNUSED,
4914 struct bfd_link_info *info)
4915 {
4916 struct ppc_elf_link_hash_table *htab;
4917 flagword flags;
4918
4919 htab = ppc_elf_hash_table (info);
4920
4921 if (htab->plt_type == PLT_UNSET)
4922 {
4923 struct elf_link_hash_entry *h;
4924
4925 if (htab->params->plt_style == PLT_OLD)
4926 htab->plt_type = PLT_OLD;
4927 else if (bfd_link_pic (info)
4928 && htab->elf.dynamic_sections_created
4929 && (h = elf_link_hash_lookup (&htab->elf, "_mcount",
4930 FALSE, FALSE, TRUE)) != NULL
4931 && (h->type == STT_FUNC
4932 || h->needs_plt)
4933 && h->ref_regular
4934 && !(SYMBOL_CALLS_LOCAL (info, h)
4935 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
4936 && h->root.type == bfd_link_hash_undefweak)))
4937 {
4938 /* Profiling of shared libs (and pies) is not supported with
4939 secure plt, because ppc32 does profiling before a
4940 function prologue and a secure plt pic call stubs needs
4941 r30 to be set up. */
4942 htab->plt_type = PLT_OLD;
4943 }
4944 else
4945 {
4946 bfd *ibfd;
4947 enum ppc_elf_plt_type plt_type = htab->params->plt_style;
4948
4949 /* Look through the reloc flags left by ppc_elf_check_relocs.
4950 Use the old style bss plt if a file makes plt calls
4951 without using the new relocs, and if ld isn't given
4952 --secure-plt and we never see REL16 relocs. */
4953 if (plt_type == PLT_UNSET)
4954 plt_type = PLT_OLD;
4955 for (ibfd = info->input_bfds; ibfd; ibfd = ibfd->link.next)
4956 if (is_ppc_elf (ibfd))
4957 {
4958 if (ppc_elf_tdata (ibfd)->has_rel16)
4959 plt_type = PLT_NEW;
4960 else if (ppc_elf_tdata (ibfd)->makes_plt_call)
4961 {
4962 plt_type = PLT_OLD;
4963 htab->old_bfd = ibfd;
4964 break;
4965 }
4966 }
4967 htab->plt_type = plt_type;
4968 }
4969 }
4970 if (htab->plt_type == PLT_OLD && htab->params->plt_style == PLT_NEW)
4971 {
4972 if (htab->old_bfd != NULL)
4973 info->callbacks->einfo (_("%P: bss-plt forced due to %B\n"),
4974 htab->old_bfd);
4975 else
4976 info->callbacks->einfo (_("%P: bss-plt forced by profiling\n"));
4977 }
4978
4979 BFD_ASSERT (htab->plt_type != PLT_VXWORKS);
4980
4981 if (htab->plt_type == PLT_NEW)
4982 {
4983 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
4984 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4985
4986 /* The new PLT is a loaded section. */
4987 if (htab->plt != NULL
4988 && !bfd_set_section_flags (htab->elf.dynobj, htab->plt, flags))
4989 return -1;
4990
4991 /* The new GOT is not executable. */
4992 if (htab->got != NULL
4993 && !bfd_set_section_flags (htab->elf.dynobj, htab->got, flags))
4994 return -1;
4995 }
4996 else
4997 {
4998 /* Stop an unused .glink section from affecting .text alignment. */
4999 if (htab->glink != NULL
5000 && !bfd_set_section_alignment (htab->elf.dynobj, htab->glink, 0))
5001 return -1;
5002 }
5003 return htab->plt_type == PLT_NEW;
5004 }
5005 \f
5006 /* Return the section that should be marked against GC for a given
5007 relocation. */
5008
5009 static asection *
5010 ppc_elf_gc_mark_hook (asection *sec,
5011 struct bfd_link_info *info,
5012 Elf_Internal_Rela *rel,
5013 struct elf_link_hash_entry *h,
5014 Elf_Internal_Sym *sym)
5015 {
5016 if (h != NULL)
5017 switch (ELF32_R_TYPE (rel->r_info))
5018 {
5019 case R_PPC_GNU_VTINHERIT:
5020 case R_PPC_GNU_VTENTRY:
5021 return NULL;
5022 }
5023
5024 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
5025 }
5026
5027 /* Update the got, plt and dynamic reloc reference counts for the
5028 section being removed. */
5029
5030 static bfd_boolean
5031 ppc_elf_gc_sweep_hook (bfd *abfd,
5032 struct bfd_link_info *info,
5033 asection *sec,
5034 const Elf_Internal_Rela *relocs)
5035 {
5036 struct ppc_elf_link_hash_table *htab;
5037 Elf_Internal_Shdr *symtab_hdr;
5038 struct elf_link_hash_entry **sym_hashes;
5039 bfd_signed_vma *local_got_refcounts;
5040 const Elf_Internal_Rela *rel, *relend;
5041 asection *got2;
5042
5043 if (bfd_link_relocatable (info))
5044 return TRUE;
5045
5046 if ((sec->flags & SEC_ALLOC) == 0)
5047 return TRUE;
5048
5049 elf_section_data (sec)->local_dynrel = NULL;
5050
5051 htab = ppc_elf_hash_table (info);
5052 symtab_hdr = &elf_symtab_hdr (abfd);
5053 sym_hashes = elf_sym_hashes (abfd);
5054 local_got_refcounts = elf_local_got_refcounts (abfd);
5055 got2 = bfd_get_section_by_name (abfd, ".got2");
5056
5057 relend = relocs + sec->reloc_count;
5058 for (rel = relocs; rel < relend; rel++)
5059 {
5060 unsigned long r_symndx;
5061 enum elf_ppc_reloc_type r_type;
5062 struct elf_link_hash_entry *h = NULL;
5063
5064 r_symndx = ELF32_R_SYM (rel->r_info);
5065 if (r_symndx >= symtab_hdr->sh_info)
5066 {
5067 struct elf_dyn_relocs **pp, *p;
5068 struct ppc_elf_link_hash_entry *eh;
5069
5070 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5071 while (h->root.type == bfd_link_hash_indirect
5072 || h->root.type == bfd_link_hash_warning)
5073 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5074 eh = (struct ppc_elf_link_hash_entry *) h;
5075
5076 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
5077 if (p->sec == sec)
5078 {
5079 /* Everything must go for SEC. */
5080 *pp = p->next;
5081 break;
5082 }
5083 }
5084
5085 r_type = ELF32_R_TYPE (rel->r_info);
5086 if (!htab->is_vxworks
5087 && h == NULL
5088 && local_got_refcounts != NULL
5089 && (!bfd_link_pic (info)
5090 || is_branch_reloc (r_type)))
5091 {
5092 struct plt_entry **local_plt = (struct plt_entry **)
5093 (local_got_refcounts + symtab_hdr->sh_info);
5094 char *local_got_tls_masks = (char *)
5095 (local_plt + symtab_hdr->sh_info);
5096 if ((local_got_tls_masks[r_symndx] & PLT_IFUNC) != 0)
5097 {
5098 struct plt_entry **ifunc = local_plt + r_symndx;
5099 bfd_vma addend = 0;
5100 struct plt_entry *ent;
5101
5102 if (r_type == R_PPC_PLTREL24 && bfd_link_pic (info))
5103 addend = rel->r_addend;
5104 ent = find_plt_ent (ifunc, got2, addend);
5105 if (ent->plt.refcount > 0)
5106 ent->plt.refcount -= 1;
5107 continue;
5108 }
5109 }
5110
5111 switch (r_type)
5112 {
5113 case R_PPC_GOT_TLSLD16:
5114 case R_PPC_GOT_TLSLD16_LO:
5115 case R_PPC_GOT_TLSLD16_HI:
5116 case R_PPC_GOT_TLSLD16_HA:
5117 case R_PPC_GOT_TLSGD16:
5118 case R_PPC_GOT_TLSGD16_LO:
5119 case R_PPC_GOT_TLSGD16_HI:
5120 case R_PPC_GOT_TLSGD16_HA:
5121 case R_PPC_GOT_TPREL16:
5122 case R_PPC_GOT_TPREL16_LO:
5123 case R_PPC_GOT_TPREL16_HI:
5124 case R_PPC_GOT_TPREL16_HA:
5125 case R_PPC_GOT_DTPREL16:
5126 case R_PPC_GOT_DTPREL16_LO:
5127 case R_PPC_GOT_DTPREL16_HI:
5128 case R_PPC_GOT_DTPREL16_HA:
5129 case R_PPC_GOT16:
5130 case R_PPC_GOT16_LO:
5131 case R_PPC_GOT16_HI:
5132 case R_PPC_GOT16_HA:
5133 if (h != NULL)
5134 {
5135 if (h->got.refcount > 0)
5136 h->got.refcount--;
5137 if (!bfd_link_pic (info))
5138 {
5139 struct plt_entry *ent;
5140
5141 ent = find_plt_ent (&h->plt.plist, NULL, 0);
5142 if (ent != NULL && ent->plt.refcount > 0)
5143 ent->plt.refcount -= 1;
5144 }
5145 }
5146 else if (local_got_refcounts != NULL)
5147 {
5148 if (local_got_refcounts[r_symndx] > 0)
5149 local_got_refcounts[r_symndx]--;
5150 }
5151 break;
5152
5153 case R_PPC_REL24:
5154 case R_PPC_REL14:
5155 case R_PPC_REL14_BRTAKEN:
5156 case R_PPC_REL14_BRNTAKEN:
5157 case R_PPC_REL32:
5158 if (h == NULL || h == htab->elf.hgot)
5159 break;
5160 /* Fall thru */
5161
5162 case R_PPC_ADDR32:
5163 case R_PPC_ADDR24:
5164 case R_PPC_ADDR16:
5165 case R_PPC_ADDR16_LO:
5166 case R_PPC_ADDR16_HI:
5167 case R_PPC_ADDR16_HA:
5168 case R_PPC_ADDR14:
5169 case R_PPC_ADDR14_BRTAKEN:
5170 case R_PPC_ADDR14_BRNTAKEN:
5171 case R_PPC_UADDR32:
5172 case R_PPC_UADDR16:
5173 if (bfd_link_pic (info))
5174 break;
5175
5176 case R_PPC_PLT32:
5177 case R_PPC_PLTREL24:
5178 case R_PPC_PLTREL32:
5179 case R_PPC_PLT16_LO:
5180 case R_PPC_PLT16_HI:
5181 case R_PPC_PLT16_HA:
5182 if (h != NULL)
5183 {
5184 bfd_vma addend = 0;
5185 struct plt_entry *ent;
5186
5187 if (r_type == R_PPC_PLTREL24 && bfd_link_pic (info))
5188 addend = rel->r_addend;
5189 ent = find_plt_ent (&h->plt.plist, got2, addend);
5190 if (ent != NULL && ent->plt.refcount > 0)
5191 ent->plt.refcount -= 1;
5192 }
5193 break;
5194
5195 default:
5196 break;
5197 }
5198 }
5199 return TRUE;
5200 }
5201 \f
5202 /* Set plt output section type, htab->tls_get_addr, and call the
5203 generic ELF tls_setup function. */
5204
5205 asection *
5206 ppc_elf_tls_setup (bfd *obfd, struct bfd_link_info *info)
5207 {
5208 struct ppc_elf_link_hash_table *htab;
5209
5210 htab = ppc_elf_hash_table (info);
5211 htab->tls_get_addr = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
5212 FALSE, FALSE, TRUE);
5213 if (htab->plt_type != PLT_NEW)
5214 htab->params->no_tls_get_addr_opt = TRUE;
5215
5216 if (!htab->params->no_tls_get_addr_opt)
5217 {
5218 struct elf_link_hash_entry *opt, *tga;
5219 opt = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_opt",
5220 FALSE, FALSE, TRUE);
5221 if (opt != NULL
5222 && (opt->root.type == bfd_link_hash_defined
5223 || opt->root.type == bfd_link_hash_defweak))
5224 {
5225 /* If glibc supports an optimized __tls_get_addr call stub,
5226 signalled by the presence of __tls_get_addr_opt, and we'll
5227 be calling __tls_get_addr via a plt call stub, then
5228 make __tls_get_addr point to __tls_get_addr_opt. */
5229 tga = htab->tls_get_addr;
5230 if (htab->elf.dynamic_sections_created
5231 && tga != NULL
5232 && (tga->type == STT_FUNC
5233 || tga->needs_plt)
5234 && !(SYMBOL_CALLS_LOCAL (info, tga)
5235 || (ELF_ST_VISIBILITY (tga->other) != STV_DEFAULT
5236 && tga->root.type == bfd_link_hash_undefweak)))
5237 {
5238 struct plt_entry *ent;
5239 for (ent = tga->plt.plist; ent != NULL; ent = ent->next)
5240 if (ent->plt.refcount > 0)
5241 break;
5242 if (ent != NULL)
5243 {
5244 tga->root.type = bfd_link_hash_indirect;
5245 tga->root.u.i.link = &opt->root;
5246 ppc_elf_copy_indirect_symbol (info, opt, tga);
5247 opt->forced_local = 0;
5248 if (opt->dynindx != -1)
5249 {
5250 /* Use __tls_get_addr_opt in dynamic relocations. */
5251 opt->dynindx = -1;
5252 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
5253 opt->dynstr_index);
5254 if (!bfd_elf_link_record_dynamic_symbol (info, opt))
5255 return FALSE;
5256 }
5257 htab->tls_get_addr = opt;
5258 }
5259 }
5260 }
5261 else
5262 htab->params->no_tls_get_addr_opt = TRUE;
5263 }
5264 if (htab->plt_type == PLT_NEW
5265 && htab->plt != NULL
5266 && htab->plt->output_section != NULL)
5267 {
5268 elf_section_type (htab->plt->output_section) = SHT_PROGBITS;
5269 elf_section_flags (htab->plt->output_section) = SHF_ALLOC + SHF_WRITE;
5270 }
5271
5272 return _bfd_elf_tls_setup (obfd, info);
5273 }
5274
5275 /* Return TRUE iff REL is a branch reloc with a global symbol matching
5276 HASH. */
5277
5278 static bfd_boolean
5279 branch_reloc_hash_match (const bfd *ibfd,
5280 const Elf_Internal_Rela *rel,
5281 const struct elf_link_hash_entry *hash)
5282 {
5283 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
5284 enum elf_ppc_reloc_type r_type = ELF32_R_TYPE (rel->r_info);
5285 unsigned int r_symndx = ELF32_R_SYM (rel->r_info);
5286
5287 if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type))
5288 {
5289 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
5290 struct elf_link_hash_entry *h;
5291
5292 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5293 while (h->root.type == bfd_link_hash_indirect
5294 || h->root.type == bfd_link_hash_warning)
5295 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5296 if (h == hash)
5297 return TRUE;
5298 }
5299 return FALSE;
5300 }
5301
5302 /* Run through all the TLS relocs looking for optimization
5303 opportunities. */
5304
5305 bfd_boolean
5306 ppc_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED,
5307 struct bfd_link_info *info)
5308 {
5309 bfd *ibfd;
5310 asection *sec;
5311 struct ppc_elf_link_hash_table *htab;
5312 int pass;
5313
5314 if (!bfd_link_executable (info))
5315 return TRUE;
5316
5317 htab = ppc_elf_hash_table (info);
5318 if (htab == NULL)
5319 return FALSE;
5320
5321 /* Make two passes through the relocs. First time check that tls
5322 relocs involved in setting up a tls_get_addr call are indeed
5323 followed by such a call. If they are not, don't do any tls
5324 optimization. On the second pass twiddle tls_mask flags to
5325 notify relocate_section that optimization can be done, and
5326 adjust got and plt refcounts. */
5327 for (pass = 0; pass < 2; ++pass)
5328 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
5329 {
5330 Elf_Internal_Sym *locsyms = NULL;
5331 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
5332 asection *got2 = bfd_get_section_by_name (ibfd, ".got2");
5333
5334 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
5335 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
5336 {
5337 Elf_Internal_Rela *relstart, *rel, *relend;
5338 int expecting_tls_get_addr = 0;
5339
5340 /* Read the relocations. */
5341 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
5342 info->keep_memory);
5343 if (relstart == NULL)
5344 return FALSE;
5345
5346 relend = relstart + sec->reloc_count;
5347 for (rel = relstart; rel < relend; rel++)
5348 {
5349 enum elf_ppc_reloc_type r_type;
5350 unsigned long r_symndx;
5351 struct elf_link_hash_entry *h = NULL;
5352 char *tls_mask;
5353 char tls_set, tls_clear;
5354 bfd_boolean is_local;
5355 bfd_signed_vma *got_count;
5356
5357 r_symndx = ELF32_R_SYM (rel->r_info);
5358 if (r_symndx >= symtab_hdr->sh_info)
5359 {
5360 struct elf_link_hash_entry **sym_hashes;
5361
5362 sym_hashes = elf_sym_hashes (ibfd);
5363 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5364 while (h->root.type == bfd_link_hash_indirect
5365 || h->root.type == bfd_link_hash_warning)
5366 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5367 }
5368
5369 is_local = FALSE;
5370 if (h == NULL
5371 || !h->def_dynamic)
5372 is_local = TRUE;
5373
5374 r_type = ELF32_R_TYPE (rel->r_info);
5375 /* If this section has old-style __tls_get_addr calls
5376 without marker relocs, then check that each
5377 __tls_get_addr call reloc is preceded by a reloc
5378 that conceivably belongs to the __tls_get_addr arg
5379 setup insn. If we don't find matching arg setup
5380 relocs, don't do any tls optimization. */
5381 if (pass == 0
5382 && sec->has_tls_get_addr_call
5383 && h != NULL
5384 && h == htab->tls_get_addr
5385 && !expecting_tls_get_addr
5386 && is_branch_reloc (r_type))
5387 {
5388 info->callbacks->minfo ("%H __tls_get_addr lost arg, "
5389 "TLS optimization disabled\n",
5390 ibfd, sec, rel->r_offset);
5391 if (elf_section_data (sec)->relocs != relstart)
5392 free (relstart);
5393 return TRUE;
5394 }
5395
5396 expecting_tls_get_addr = 0;
5397 switch (r_type)
5398 {
5399 case R_PPC_GOT_TLSLD16:
5400 case R_PPC_GOT_TLSLD16_LO:
5401 expecting_tls_get_addr = 1;
5402 /* Fall thru */
5403
5404 case R_PPC_GOT_TLSLD16_HI:
5405 case R_PPC_GOT_TLSLD16_HA:
5406 /* These relocs should never be against a symbol
5407 defined in a shared lib. Leave them alone if
5408 that turns out to be the case. */
5409 if (!is_local)
5410 continue;
5411
5412 /* LD -> LE */
5413 tls_set = 0;
5414 tls_clear = TLS_LD;
5415 break;
5416
5417 case R_PPC_GOT_TLSGD16:
5418 case R_PPC_GOT_TLSGD16_LO:
5419 expecting_tls_get_addr = 1;
5420 /* Fall thru */
5421
5422 case R_PPC_GOT_TLSGD16_HI:
5423 case R_PPC_GOT_TLSGD16_HA:
5424 if (is_local)
5425 /* GD -> LE */
5426 tls_set = 0;
5427 else
5428 /* GD -> IE */
5429 tls_set = TLS_TLS | TLS_TPRELGD;
5430 tls_clear = TLS_GD;
5431 break;
5432
5433 case R_PPC_GOT_TPREL16:
5434 case R_PPC_GOT_TPREL16_LO:
5435 case R_PPC_GOT_TPREL16_HI:
5436 case R_PPC_GOT_TPREL16_HA:
5437 if (is_local)
5438 {
5439 /* IE -> LE */
5440 tls_set = 0;
5441 tls_clear = TLS_TPREL;
5442 break;
5443 }
5444 else
5445 continue;
5446
5447 case R_PPC_TLSGD:
5448 case R_PPC_TLSLD:
5449 expecting_tls_get_addr = 2;
5450 tls_set = 0;
5451 tls_clear = 0;
5452 break;
5453
5454 default:
5455 continue;
5456 }
5457
5458 if (pass == 0)
5459 {
5460 if (!expecting_tls_get_addr
5461 || (expecting_tls_get_addr == 1
5462 && !sec->has_tls_get_addr_call))
5463 continue;
5464
5465 if (rel + 1 < relend
5466 && branch_reloc_hash_match (ibfd, rel + 1,
5467 htab->tls_get_addr))
5468 continue;
5469
5470 /* Uh oh, we didn't find the expected call. We
5471 could just mark this symbol to exclude it
5472 from tls optimization but it's safer to skip
5473 the entire optimization. */
5474 info->callbacks->minfo (_("%H arg lost __tls_get_addr, "
5475 "TLS optimization disabled\n"),
5476 ibfd, sec, rel->r_offset);
5477 if (elf_section_data (sec)->relocs != relstart)
5478 free (relstart);
5479 return TRUE;
5480 }
5481
5482 if (expecting_tls_get_addr)
5483 {
5484 struct plt_entry *ent;
5485 bfd_vma addend = 0;
5486
5487 if (bfd_link_pic (info)
5488 && ELF32_R_TYPE (rel[1].r_info) == R_PPC_PLTREL24)
5489 addend = rel[1].r_addend;
5490 ent = find_plt_ent (&htab->tls_get_addr->plt.plist,
5491 got2, addend);
5492 if (ent != NULL && ent->plt.refcount > 0)
5493 ent->plt.refcount -= 1;
5494
5495 if (expecting_tls_get_addr == 2)
5496 continue;
5497 }
5498
5499 if (h != NULL)
5500 {
5501 tls_mask = &ppc_elf_hash_entry (h)->tls_mask;
5502 got_count = &h->got.refcount;
5503 }
5504 else
5505 {
5506 bfd_signed_vma *lgot_refs;
5507 struct plt_entry **local_plt;
5508 char *lgot_masks;
5509
5510 if (locsyms == NULL)
5511 {
5512 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
5513 if (locsyms == NULL)
5514 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
5515 symtab_hdr->sh_info,
5516 0, NULL, NULL, NULL);
5517 if (locsyms == NULL)
5518 {
5519 if (elf_section_data (sec)->relocs != relstart)
5520 free (relstart);
5521 return FALSE;
5522 }
5523 }
5524 lgot_refs = elf_local_got_refcounts (ibfd);
5525 if (lgot_refs == NULL)
5526 abort ();
5527 local_plt = (struct plt_entry **)
5528 (lgot_refs + symtab_hdr->sh_info);
5529 lgot_masks = (char *) (local_plt + symtab_hdr->sh_info);
5530 tls_mask = &lgot_masks[r_symndx];
5531 got_count = &lgot_refs[r_symndx];
5532 }
5533
5534 if (tls_set == 0)
5535 {
5536 /* We managed to get rid of a got entry. */
5537 if (*got_count > 0)
5538 *got_count -= 1;
5539 }
5540
5541 *tls_mask |= tls_set;
5542 *tls_mask &= ~tls_clear;
5543 }
5544
5545 if (elf_section_data (sec)->relocs != relstart)
5546 free (relstart);
5547 }
5548
5549 if (locsyms != NULL
5550 && (symtab_hdr->contents != (unsigned char *) locsyms))
5551 {
5552 if (!info->keep_memory)
5553 free (locsyms);
5554 else
5555 symtab_hdr->contents = (unsigned char *) locsyms;
5556 }
5557 }
5558 return TRUE;
5559 }
5560 \f
5561 /* Return true if we have dynamic relocs that apply to read-only sections. */
5562
5563 static bfd_boolean
5564 readonly_dynrelocs (struct elf_link_hash_entry *h)
5565 {
5566 struct elf_dyn_relocs *p;
5567
5568 for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next)
5569 {
5570 asection *s = p->sec->output_section;
5571
5572 if (s != NULL
5573 && ((s->flags & (SEC_READONLY | SEC_ALLOC))
5574 == (SEC_READONLY | SEC_ALLOC)))
5575 return TRUE;
5576 }
5577 return FALSE;
5578 }
5579
5580 /* Adjust a symbol defined by a dynamic object and referenced by a
5581 regular object. The current definition is in some section of the
5582 dynamic object, but we're not including those sections. We have to
5583 change the definition to something the rest of the link can
5584 understand. */
5585
5586 static bfd_boolean
5587 ppc_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
5588 struct elf_link_hash_entry *h)
5589 {
5590 struct ppc_elf_link_hash_table *htab;
5591 asection *s;
5592
5593 #ifdef DEBUG
5594 fprintf (stderr, "ppc_elf_adjust_dynamic_symbol called for %s\n",
5595 h->root.root.string);
5596 #endif
5597
5598 /* Make sure we know what is going on here. */
5599 htab = ppc_elf_hash_table (info);
5600 BFD_ASSERT (htab->elf.dynobj != NULL
5601 && (h->needs_plt
5602 || h->type == STT_GNU_IFUNC
5603 || h->u.weakdef != NULL
5604 || (h->def_dynamic
5605 && h->ref_regular
5606 && !h->def_regular)));
5607
5608 /* Deal with function syms. */
5609 if (h->type == STT_FUNC
5610 || h->type == STT_GNU_IFUNC
5611 || h->needs_plt)
5612 {
5613 /* Clear procedure linkage table information for any symbol that
5614 won't need a .plt entry. */
5615 struct plt_entry *ent;
5616 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
5617 if (ent->plt.refcount > 0)
5618 break;
5619 if (ent == NULL
5620 || (h->type != STT_GNU_IFUNC
5621 && (SYMBOL_CALLS_LOCAL (info, h)
5622 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
5623 && h->root.type == bfd_link_hash_undefweak))))
5624 {
5625 /* A PLT entry is not required/allowed when:
5626
5627 1. We are not using ld.so; because then the PLT entry
5628 can't be set up, so we can't use one. In this case,
5629 ppc_elf_adjust_dynamic_symbol won't even be called.
5630
5631 2. GC has rendered the entry unused.
5632
5633 3. We know for certain that a call to this symbol
5634 will go to this object, or will remain undefined. */
5635 h->plt.plist = NULL;
5636 h->needs_plt = 0;
5637 h->pointer_equality_needed = 0;
5638 }
5639 else
5640 {
5641 /* Taking a function's address in a read/write section
5642 doesn't require us to define the function symbol in the
5643 executable on a plt call stub. A dynamic reloc can
5644 be used instead. */
5645 if (h->pointer_equality_needed
5646 && h->type != STT_GNU_IFUNC
5647 && !htab->is_vxworks
5648 && !ppc_elf_hash_entry (h)->has_sda_refs
5649 && !readonly_dynrelocs (h))
5650 {
5651 h->pointer_equality_needed = 0;
5652 h->non_got_ref = 0;
5653 }
5654
5655 /* After adjust_dynamic_symbol, non_got_ref set in the
5656 non-shared case means that we have allocated space in
5657 .dynbss for the symbol and thus dyn_relocs for this
5658 symbol should be discarded.
5659 If we get here we know we are making a PLT entry for this
5660 symbol, and in an executable we'd normally resolve
5661 relocations against this symbol to the PLT entry. Allow
5662 dynamic relocs if the reference is weak, and the dynamic
5663 relocs will not cause text relocation. */
5664 else if (!h->ref_regular_nonweak
5665 && h->non_got_ref
5666 && h->type != STT_GNU_IFUNC
5667 && !htab->is_vxworks
5668 && !ppc_elf_hash_entry (h)->has_sda_refs
5669 && !readonly_dynrelocs (h))
5670 h->non_got_ref = 0;
5671 }
5672 h->protected_def = 0;
5673 return TRUE;
5674 }
5675 else
5676 h->plt.plist = NULL;
5677
5678 /* If this is a weak symbol, and there is a real definition, the
5679 processor independent code will have arranged for us to see the
5680 real definition first, and we can just use the same value. */
5681 if (h->u.weakdef != NULL)
5682 {
5683 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
5684 || h->u.weakdef->root.type == bfd_link_hash_defweak);
5685 h->root.u.def.section = h->u.weakdef->root.u.def.section;
5686 h->root.u.def.value = h->u.weakdef->root.u.def.value;
5687 if (ELIMINATE_COPY_RELOCS)
5688 h->non_got_ref = h->u.weakdef->non_got_ref;
5689 return TRUE;
5690 }
5691
5692 /* This is a reference to a symbol defined by a dynamic object which
5693 is not a function. */
5694
5695 /* If we are creating a shared library, we must presume that the
5696 only references to the symbol are via the global offset table.
5697 For such cases we need not do anything here; the relocations will
5698 be handled correctly by relocate_section. */
5699 if (bfd_link_pic (info))
5700 {
5701 h->protected_def = 0;
5702 return TRUE;
5703 }
5704
5705 /* If there are no references to this symbol that do not use the
5706 GOT, we don't need to generate a copy reloc. */
5707 if (!h->non_got_ref)
5708 {
5709 h->protected_def = 0;
5710 return TRUE;
5711 }
5712
5713 /* Protected variables do not work with .dynbss. The copy in
5714 .dynbss won't be used by the shared library with the protected
5715 definition for the variable. Editing to PIC, or text relocations
5716 are preferable to an incorrect program. */
5717 if (h->protected_def)
5718 {
5719 if (ELIMINATE_COPY_RELOCS
5720 && ppc_elf_hash_entry (h)->has_addr16_ha
5721 && ppc_elf_hash_entry (h)->has_addr16_lo
5722 && htab->params->pic_fixup == 0
5723 && info->disable_target_specific_optimizations <= 1)
5724 htab->params->pic_fixup = 1;
5725 h->non_got_ref = 0;
5726 return TRUE;
5727 }
5728
5729 /* If -z nocopyreloc was given, we won't generate them either. */
5730 if (info->nocopyreloc)
5731 {
5732 h->non_got_ref = 0;
5733 return TRUE;
5734 }
5735
5736 /* If we didn't find any dynamic relocs in read-only sections, then
5737 we'll be keeping the dynamic relocs and avoiding the copy reloc.
5738 We can't do this if there are any small data relocations. This
5739 doesn't work on VxWorks, where we can not have dynamic
5740 relocations (other than copy and jump slot relocations) in an
5741 executable. */
5742 if (ELIMINATE_COPY_RELOCS
5743 && !ppc_elf_hash_entry (h)->has_sda_refs
5744 && !htab->is_vxworks
5745 && !h->def_regular
5746 && !readonly_dynrelocs (h))
5747 {
5748 h->non_got_ref = 0;
5749 return TRUE;
5750 }
5751
5752 /* We must allocate the symbol in our .dynbss section, which will
5753 become part of the .bss section of the executable. There will be
5754 an entry for this symbol in the .dynsym section. The dynamic
5755 object will contain position independent code, so all references
5756 from the dynamic object to this symbol will go through the global
5757 offset table. The dynamic linker will use the .dynsym entry to
5758 determine the address it must put in the global offset table, so
5759 both the dynamic object and the regular object will refer to the
5760 same memory location for the variable.
5761
5762 Of course, if the symbol is referenced using SDAREL relocs, we
5763 must instead allocate it in .sbss. */
5764
5765 if (ppc_elf_hash_entry (h)->has_sda_refs)
5766 s = htab->dynsbss;
5767 else
5768 s = htab->dynbss;
5769 BFD_ASSERT (s != NULL);
5770
5771 /* We must generate a R_PPC_COPY reloc to tell the dynamic linker to
5772 copy the initial value out of the dynamic object and into the
5773 runtime process image. We need to remember the offset into the
5774 .rela.bss section we are going to use. */
5775 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
5776 {
5777 asection *srel;
5778
5779 if (ppc_elf_hash_entry (h)->has_sda_refs)
5780 srel = htab->relsbss;
5781 else
5782 srel = htab->relbss;
5783 BFD_ASSERT (srel != NULL);
5784 srel->size += sizeof (Elf32_External_Rela);
5785 h->needs_copy = 1;
5786 }
5787
5788 return _bfd_elf_adjust_dynamic_copy (info, h, s);
5789 }
5790 \f
5791 /* Generate a symbol to mark plt call stubs. For non-PIC code the sym is
5792 xxxxxxxx.plt_call32.<callee> where xxxxxxxx is a hex number, usually 0,
5793 specifying the addend on the plt relocation. For -fpic code, the sym
5794 is xxxxxxxx.plt_pic32.<callee>, and for -fPIC
5795 xxxxxxxx.got2.plt_pic32.<callee>. */
5796
5797 static bfd_boolean
5798 add_stub_sym (struct plt_entry *ent,
5799 struct elf_link_hash_entry *h,
5800 struct bfd_link_info *info)
5801 {
5802 struct elf_link_hash_entry *sh;
5803 size_t len1, len2, len3;
5804 char *name;
5805 const char *stub;
5806 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
5807
5808 if (bfd_link_pic (info))
5809 stub = ".plt_pic32.";
5810 else
5811 stub = ".plt_call32.";
5812
5813 len1 = strlen (h->root.root.string);
5814 len2 = strlen (stub);
5815 len3 = 0;
5816 if (ent->sec)
5817 len3 = strlen (ent->sec->name);
5818 name = bfd_malloc (len1 + len2 + len3 + 9);
5819 if (name == NULL)
5820 return FALSE;
5821 sprintf (name, "%08x", (unsigned) ent->addend & 0xffffffff);
5822 if (ent->sec)
5823 memcpy (name + 8, ent->sec->name, len3);
5824 memcpy (name + 8 + len3, stub, len2);
5825 memcpy (name + 8 + len3 + len2, h->root.root.string, len1 + 1);
5826 sh = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
5827 if (sh == NULL)
5828 return FALSE;
5829 if (sh->root.type == bfd_link_hash_new)
5830 {
5831 sh->root.type = bfd_link_hash_defined;
5832 sh->root.u.def.section = htab->glink;
5833 sh->root.u.def.value = ent->glink_offset;
5834 sh->ref_regular = 1;
5835 sh->def_regular = 1;
5836 sh->ref_regular_nonweak = 1;
5837 sh->forced_local = 1;
5838 sh->non_elf = 0;
5839 sh->root.linker_def = 1;
5840 }
5841 return TRUE;
5842 }
5843
5844 /* Allocate NEED contiguous space in .got, and return the offset.
5845 Handles allocation of the got header when crossing 32k. */
5846
5847 static bfd_vma
5848 allocate_got (struct ppc_elf_link_hash_table *htab, unsigned int need)
5849 {
5850 bfd_vma where;
5851 unsigned int max_before_header;
5852
5853 if (htab->plt_type == PLT_VXWORKS)
5854 {
5855 where = htab->got->size;
5856 htab->got->size += need;
5857 }
5858 else
5859 {
5860 max_before_header = htab->plt_type == PLT_NEW ? 32768 : 32764;
5861 if (need <= htab->got_gap)
5862 {
5863 where = max_before_header - htab->got_gap;
5864 htab->got_gap -= need;
5865 }
5866 else
5867 {
5868 if (htab->got->size + need > max_before_header
5869 && htab->got->size <= max_before_header)
5870 {
5871 htab->got_gap = max_before_header - htab->got->size;
5872 htab->got->size = max_before_header + htab->got_header_size;
5873 }
5874 where = htab->got->size;
5875 htab->got->size += need;
5876 }
5877 }
5878 return where;
5879 }
5880
5881 /* Allocate space in associated reloc sections for dynamic relocs. */
5882
5883 static bfd_boolean
5884 allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
5885 {
5886 struct bfd_link_info *info = inf;
5887 struct ppc_elf_link_hash_entry *eh;
5888 struct ppc_elf_link_hash_table *htab;
5889 struct elf_dyn_relocs *p;
5890
5891 if (h->root.type == bfd_link_hash_indirect)
5892 return TRUE;
5893
5894 htab = ppc_elf_hash_table (info);
5895 if (htab->elf.dynamic_sections_created
5896 || h->type == STT_GNU_IFUNC)
5897 {
5898 struct plt_entry *ent;
5899 bfd_boolean doneone = FALSE;
5900 bfd_vma plt_offset = 0, glink_offset = 0;
5901 bfd_boolean dyn;
5902
5903 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
5904 if (ent->plt.refcount > 0)
5905 {
5906 /* Make sure this symbol is output as a dynamic symbol. */
5907 if (h->dynindx == -1
5908 && !h->forced_local
5909 && !h->def_regular
5910 && htab->elf.dynamic_sections_created)
5911 {
5912 if (! bfd_elf_link_record_dynamic_symbol (info, h))
5913 return FALSE;
5914 }
5915
5916 dyn = htab->elf.dynamic_sections_created;
5917 if (bfd_link_pic (info)
5918 || h->type == STT_GNU_IFUNC
5919 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))
5920 {
5921 asection *s = htab->plt;
5922 if (!dyn || h->dynindx == -1)
5923 s = htab->iplt;
5924
5925 if (htab->plt_type == PLT_NEW || !dyn || h->dynindx == -1)
5926 {
5927 if (!doneone)
5928 {
5929 plt_offset = s->size;
5930 s->size += 4;
5931 }
5932 ent->plt.offset = plt_offset;
5933
5934 s = htab->glink;
5935 if (!doneone || bfd_link_pic (info))
5936 {
5937 glink_offset = s->size;
5938 s->size += GLINK_ENTRY_SIZE;
5939 if (h == htab->tls_get_addr
5940 && !htab->params->no_tls_get_addr_opt)
5941 s->size += TLS_GET_ADDR_GLINK_SIZE - GLINK_ENTRY_SIZE;
5942 }
5943 if (!doneone
5944 && !bfd_link_pic (info)
5945 && h->def_dynamic
5946 && !h->def_regular)
5947 {
5948 h->root.u.def.section = s;
5949 h->root.u.def.value = glink_offset;
5950 }
5951 ent->glink_offset = glink_offset;
5952
5953 if (htab->params->emit_stub_syms
5954 && !add_stub_sym (ent, h, info))
5955 return FALSE;
5956 }
5957 else
5958 {
5959 if (!doneone)
5960 {
5961 /* If this is the first .plt entry, make room
5962 for the special first entry. */
5963 if (s->size == 0)
5964 s->size += htab->plt_initial_entry_size;
5965
5966 /* The PowerPC PLT is actually composed of two
5967 parts, the first part is 2 words (for a load
5968 and a jump), and then there is a remaining
5969 word available at the end. */
5970 plt_offset = (htab->plt_initial_entry_size
5971 + (htab->plt_slot_size
5972 * ((s->size
5973 - htab->plt_initial_entry_size)
5974 / htab->plt_entry_size)));
5975
5976 /* If this symbol is not defined in a regular
5977 file, and we are not generating a shared
5978 library, then set the symbol to this location
5979 in the .plt. This is to avoid text
5980 relocations, and is required to make
5981 function pointers compare as equal between
5982 the normal executable and the shared library. */
5983 if (! bfd_link_pic (info)
5984 && h->def_dynamic
5985 && !h->def_regular)
5986 {
5987 h->root.u.def.section = s;
5988 h->root.u.def.value = plt_offset;
5989 }
5990
5991 /* Make room for this entry. */
5992 s->size += htab->plt_entry_size;
5993 /* After the 8192nd entry, room for two entries
5994 is allocated. */
5995 if (htab->plt_type == PLT_OLD
5996 && (s->size - htab->plt_initial_entry_size)
5997 / htab->plt_entry_size
5998 > PLT_NUM_SINGLE_ENTRIES)
5999 s->size += htab->plt_entry_size;
6000 }
6001 ent->plt.offset = plt_offset;
6002 }
6003
6004 /* We also need to make an entry in the .rela.plt section. */
6005 if (!doneone)
6006 {
6007 if (!htab->elf.dynamic_sections_created
6008 || h->dynindx == -1)
6009 htab->reliplt->size += sizeof (Elf32_External_Rela);
6010 else
6011 {
6012 htab->relplt->size += sizeof (Elf32_External_Rela);
6013
6014 if (htab->plt_type == PLT_VXWORKS)
6015 {
6016 /* Allocate space for the unloaded relocations. */
6017 if (!bfd_link_pic (info)
6018 && htab->elf.dynamic_sections_created)
6019 {
6020 if (ent->plt.offset
6021 == (bfd_vma) htab->plt_initial_entry_size)
6022 {
6023 htab->srelplt2->size
6024 += (sizeof (Elf32_External_Rela)
6025 * VXWORKS_PLTRESOLVE_RELOCS);
6026 }
6027
6028 htab->srelplt2->size
6029 += (sizeof (Elf32_External_Rela)
6030 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS);
6031 }
6032
6033 /* Every PLT entry has an associated GOT entry in
6034 .got.plt. */
6035 htab->sgotplt->size += 4;
6036 }
6037 }
6038 doneone = TRUE;
6039 }
6040 }
6041 else
6042 ent->plt.offset = (bfd_vma) -1;
6043 }
6044 else
6045 ent->plt.offset = (bfd_vma) -1;
6046
6047 if (!doneone)
6048 {
6049 h->plt.plist = NULL;
6050 h->needs_plt = 0;
6051 }
6052 }
6053 else
6054 {
6055 h->plt.plist = NULL;
6056 h->needs_plt = 0;
6057 }
6058
6059 eh = (struct ppc_elf_link_hash_entry *) h;
6060 if (eh->elf.got.refcount > 0
6061 || (ELIMINATE_COPY_RELOCS
6062 && !eh->elf.def_regular
6063 && eh->elf.protected_def
6064 && eh->has_addr16_ha
6065 && eh->has_addr16_lo
6066 && htab->params->pic_fixup > 0))
6067 {
6068 bfd_boolean dyn;
6069 unsigned int need;
6070
6071 /* Make sure this symbol is output as a dynamic symbol. */
6072 if (eh->elf.dynindx == -1
6073 && !eh->elf.forced_local
6074 && eh->elf.type != STT_GNU_IFUNC
6075 && htab->elf.dynamic_sections_created)
6076 {
6077 if (!bfd_elf_link_record_dynamic_symbol (info, &eh->elf))
6078 return FALSE;
6079 }
6080
6081 need = 0;
6082 if ((eh->tls_mask & TLS_TLS) != 0)
6083 {
6084 if ((eh->tls_mask & TLS_LD) != 0)
6085 {
6086 if (!eh->elf.def_dynamic)
6087 /* We'll just use htab->tlsld_got.offset. This should
6088 always be the case. It's a little odd if we have
6089 a local dynamic reloc against a non-local symbol. */
6090 htab->tlsld_got.refcount += 1;
6091 else
6092 need += 8;
6093 }
6094 if ((eh->tls_mask & TLS_GD) != 0)
6095 need += 8;
6096 if ((eh->tls_mask & (TLS_TPREL | TLS_TPRELGD)) != 0)
6097 need += 4;
6098 if ((eh->tls_mask & TLS_DTPREL) != 0)
6099 need += 4;
6100 }
6101 else
6102 need += 4;
6103 if (need == 0)
6104 eh->elf.got.offset = (bfd_vma) -1;
6105 else
6106 {
6107 eh->elf.got.offset = allocate_got (htab, need);
6108 dyn = htab->elf.dynamic_sections_created;
6109 if ((bfd_link_pic (info)
6110 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, &eh->elf))
6111 && (ELF_ST_VISIBILITY (eh->elf.other) == STV_DEFAULT
6112 || eh->elf.root.type != bfd_link_hash_undefweak))
6113 {
6114 asection *rsec = htab->relgot;
6115
6116 if (eh->elf.type == STT_GNU_IFUNC)
6117 rsec = htab->reliplt;
6118 /* All the entries we allocated need relocs.
6119 Except LD only needs one. */
6120 if ((eh->tls_mask & TLS_LD) != 0
6121 && eh->elf.def_dynamic)
6122 need -= 4;
6123 rsec->size += need * (sizeof (Elf32_External_Rela) / 4);
6124 }
6125 }
6126 }
6127 else
6128 eh->elf.got.offset = (bfd_vma) -1;
6129
6130 if (eh->dyn_relocs == NULL
6131 || !htab->elf.dynamic_sections_created)
6132 return TRUE;
6133
6134 /* In the shared -Bsymbolic case, discard space allocated for
6135 dynamic pc-relative relocs against symbols which turn out to be
6136 defined in regular objects. For the normal shared case, discard
6137 space for relocs that have become local due to symbol visibility
6138 changes. */
6139
6140 if (bfd_link_pic (info))
6141 {
6142 /* Relocs that use pc_count are those that appear on a call insn,
6143 or certain REL relocs (see must_be_dyn_reloc) that can be
6144 generated via assembly. We want calls to protected symbols to
6145 resolve directly to the function rather than going via the plt.
6146 If people want function pointer comparisons to work as expected
6147 then they should avoid writing weird assembly. */
6148 if (SYMBOL_CALLS_LOCAL (info, h))
6149 {
6150 struct elf_dyn_relocs **pp;
6151
6152 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
6153 {
6154 p->count -= p->pc_count;
6155 p->pc_count = 0;
6156 if (p->count == 0)
6157 *pp = p->next;
6158 else
6159 pp = &p->next;
6160 }
6161 }
6162
6163 if (htab->is_vxworks)
6164 {
6165 struct elf_dyn_relocs **pp;
6166
6167 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
6168 {
6169 if (strcmp (p->sec->output_section->name, ".tls_vars") == 0)
6170 *pp = p->next;
6171 else
6172 pp = &p->next;
6173 }
6174 }
6175
6176 /* Discard relocs on undefined symbols that must be local. */
6177 if (eh->dyn_relocs != NULL
6178 && h->root.type == bfd_link_hash_undefined
6179 && (ELF_ST_VISIBILITY (h->other) == STV_HIDDEN
6180 || ELF_ST_VISIBILITY (h->other) == STV_INTERNAL))
6181 eh->dyn_relocs = NULL;
6182
6183 /* Also discard relocs on undefined weak syms with non-default
6184 visibility. */
6185 if (eh->dyn_relocs != NULL
6186 && h->root.type == bfd_link_hash_undefweak)
6187 {
6188 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
6189 eh->dyn_relocs = NULL;
6190
6191 /* Make sure undefined weak symbols are output as a dynamic
6192 symbol in PIEs. */
6193 else if (h->dynindx == -1
6194 && !h->forced_local
6195 && !h->def_regular)
6196 {
6197 if (! bfd_elf_link_record_dynamic_symbol (info, h))
6198 return FALSE;
6199 }
6200 }
6201 }
6202 else if (ELIMINATE_COPY_RELOCS)
6203 {
6204 /* For the non-shared case, discard space for relocs against
6205 symbols which turn out to need copy relocs or are not
6206 dynamic. */
6207
6208 if (!h->non_got_ref
6209 && !h->def_regular
6210 && !(h->protected_def
6211 && eh->has_addr16_ha
6212 && eh->has_addr16_lo
6213 && htab->params->pic_fixup > 0))
6214 {
6215 /* Make sure this symbol is output as a dynamic symbol.
6216 Undefined weak syms won't yet be marked as dynamic. */
6217 if (h->dynindx == -1
6218 && !h->forced_local)
6219 {
6220 if (! bfd_elf_link_record_dynamic_symbol (info, h))
6221 return FALSE;
6222 }
6223
6224 /* If that succeeded, we know we'll be keeping all the
6225 relocs. */
6226 if (h->dynindx != -1)
6227 goto keep;
6228 }
6229
6230 eh->dyn_relocs = NULL;
6231
6232 keep: ;
6233 }
6234
6235 /* Finally, allocate space. */
6236 for (p = eh->dyn_relocs; p != NULL; p = p->next)
6237 {
6238 asection *sreloc = elf_section_data (p->sec)->sreloc;
6239 if (eh->elf.type == STT_GNU_IFUNC)
6240 sreloc = htab->reliplt;
6241 sreloc->size += p->count * sizeof (Elf32_External_Rela);
6242 }
6243
6244 return TRUE;
6245 }
6246
6247 /* Set DF_TEXTREL if we find any dynamic relocs that apply to
6248 read-only sections. */
6249
6250 static bfd_boolean
6251 maybe_set_textrel (struct elf_link_hash_entry *h, void *info)
6252 {
6253 if (h->root.type == bfd_link_hash_indirect)
6254 return TRUE;
6255
6256 if (readonly_dynrelocs (h))
6257 {
6258 ((struct bfd_link_info *) info)->flags |= DF_TEXTREL;
6259
6260 /* Not an error, just cut short the traversal. */
6261 return FALSE;
6262 }
6263 return TRUE;
6264 }
6265
6266 static const unsigned char glink_eh_frame_cie[] =
6267 {
6268 0, 0, 0, 16, /* length. */
6269 0, 0, 0, 0, /* id. */
6270 1, /* CIE version. */
6271 'z', 'R', 0, /* Augmentation string. */
6272 4, /* Code alignment. */
6273 0x7c, /* Data alignment. */
6274 65, /* RA reg. */
6275 1, /* Augmentation size. */
6276 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding. */
6277 DW_CFA_def_cfa, 1, 0 /* def_cfa: r1 offset 0. */
6278 };
6279
6280 /* Set the sizes of the dynamic sections. */
6281
6282 static bfd_boolean
6283 ppc_elf_size_dynamic_sections (bfd *output_bfd,
6284 struct bfd_link_info *info)
6285 {
6286 struct ppc_elf_link_hash_table *htab;
6287 asection *s;
6288 bfd_boolean relocs;
6289 bfd *ibfd;
6290
6291 #ifdef DEBUG
6292 fprintf (stderr, "ppc_elf_size_dynamic_sections called\n");
6293 #endif
6294
6295 htab = ppc_elf_hash_table (info);
6296 BFD_ASSERT (htab->elf.dynobj != NULL);
6297
6298 if (elf_hash_table (info)->dynamic_sections_created)
6299 {
6300 /* Set the contents of the .interp section to the interpreter. */
6301 if (bfd_link_executable (info) && !info->nointerp)
6302 {
6303 s = bfd_get_linker_section (htab->elf.dynobj, ".interp");
6304 BFD_ASSERT (s != NULL);
6305 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
6306 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
6307 }
6308 }
6309
6310 if (htab->plt_type == PLT_OLD)
6311 htab->got_header_size = 16;
6312 else if (htab->plt_type == PLT_NEW)
6313 htab->got_header_size = 12;
6314
6315 /* Set up .got offsets for local syms, and space for local dynamic
6316 relocs. */
6317 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
6318 {
6319 bfd_signed_vma *local_got;
6320 bfd_signed_vma *end_local_got;
6321 struct plt_entry **local_plt;
6322 struct plt_entry **end_local_plt;
6323 char *lgot_masks;
6324 bfd_size_type locsymcount;
6325 Elf_Internal_Shdr *symtab_hdr;
6326
6327 if (!is_ppc_elf (ibfd))
6328 continue;
6329
6330 for (s = ibfd->sections; s != NULL; s = s->next)
6331 {
6332 struct ppc_dyn_relocs *p;
6333
6334 for (p = ((struct ppc_dyn_relocs *)
6335 elf_section_data (s)->local_dynrel);
6336 p != NULL;
6337 p = p->next)
6338 {
6339 if (!bfd_is_abs_section (p->sec)
6340 && bfd_is_abs_section (p->sec->output_section))
6341 {
6342 /* Input section has been discarded, either because
6343 it is a copy of a linkonce section or due to
6344 linker script /DISCARD/, so we'll be discarding
6345 the relocs too. */
6346 }
6347 else if (htab->is_vxworks
6348 && strcmp (p->sec->output_section->name,
6349 ".tls_vars") == 0)
6350 {
6351 /* Relocations in vxworks .tls_vars sections are
6352 handled specially by the loader. */
6353 }
6354 else if (p->count != 0)
6355 {
6356 asection *sreloc = elf_section_data (p->sec)->sreloc;
6357 if (p->ifunc)
6358 sreloc = htab->reliplt;
6359 sreloc->size += p->count * sizeof (Elf32_External_Rela);
6360 if ((p->sec->output_section->flags
6361 & (SEC_READONLY | SEC_ALLOC))
6362 == (SEC_READONLY | SEC_ALLOC))
6363 info->flags |= DF_TEXTREL;
6364 }
6365 }
6366 }
6367
6368 local_got = elf_local_got_refcounts (ibfd);
6369 if (!local_got)
6370 continue;
6371
6372 symtab_hdr = &elf_symtab_hdr (ibfd);
6373 locsymcount = symtab_hdr->sh_info;
6374 end_local_got = local_got + locsymcount;
6375 local_plt = (struct plt_entry **) end_local_got;
6376 end_local_plt = local_plt + locsymcount;
6377 lgot_masks = (char *) end_local_plt;
6378
6379 for (; local_got < end_local_got; ++local_got, ++lgot_masks)
6380 if (*local_got > 0)
6381 {
6382 unsigned int need = 0;
6383 if ((*lgot_masks & TLS_TLS) != 0)
6384 {
6385 if ((*lgot_masks & TLS_GD) != 0)
6386 need += 8;
6387 if ((*lgot_masks & TLS_LD) != 0)
6388 htab->tlsld_got.refcount += 1;
6389 if ((*lgot_masks & (TLS_TPREL | TLS_TPRELGD)) != 0)
6390 need += 4;
6391 if ((*lgot_masks & TLS_DTPREL) != 0)
6392 need += 4;
6393 }
6394 else
6395 need += 4;
6396 if (need == 0)
6397 *local_got = (bfd_vma) -1;
6398 else
6399 {
6400 *local_got = allocate_got (htab, need);
6401 if (bfd_link_pic (info))
6402 {
6403 asection *srel = htab->relgot;
6404 if ((*lgot_masks & PLT_IFUNC) != 0)
6405 srel = htab->reliplt;
6406 srel->size += need * (sizeof (Elf32_External_Rela) / 4);
6407 }
6408 }
6409 }
6410 else
6411 *local_got = (bfd_vma) -1;
6412
6413 if (htab->is_vxworks)
6414 continue;
6415
6416 /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */
6417 for (; local_plt < end_local_plt; ++local_plt)
6418 {
6419 struct plt_entry *ent;
6420 bfd_boolean doneone = FALSE;
6421 bfd_vma plt_offset = 0, glink_offset = 0;
6422
6423 for (ent = *local_plt; ent != NULL; ent = ent->next)
6424 if (ent->plt.refcount > 0)
6425 {
6426 s = htab->iplt;
6427
6428 if (!doneone)
6429 {
6430 plt_offset = s->size;
6431 s->size += 4;
6432 }
6433 ent->plt.offset = plt_offset;
6434
6435 s = htab->glink;
6436 if (!doneone || bfd_link_pic (info))
6437 {
6438 glink_offset = s->size;
6439 s->size += GLINK_ENTRY_SIZE;
6440 }
6441 ent->glink_offset = glink_offset;
6442
6443 if (!doneone)
6444 {
6445 htab->reliplt->size += sizeof (Elf32_External_Rela);
6446 doneone = TRUE;
6447 }
6448 }
6449 else
6450 ent->plt.offset = (bfd_vma) -1;
6451 }
6452 }
6453
6454 /* Allocate space for global sym dynamic relocs. */
6455 elf_link_hash_traverse (elf_hash_table (info), allocate_dynrelocs, info);
6456
6457 if (htab->tlsld_got.refcount > 0)
6458 {
6459 htab->tlsld_got.offset = allocate_got (htab, 8);
6460 if (bfd_link_pic (info))
6461 htab->relgot->size += sizeof (Elf32_External_Rela);
6462 }
6463 else
6464 htab->tlsld_got.offset = (bfd_vma) -1;
6465
6466 if (htab->got != NULL && htab->plt_type != PLT_VXWORKS)
6467 {
6468 unsigned int g_o_t = 32768;
6469
6470 /* If we haven't allocated the header, do so now. When we get here,
6471 for old plt/got the got size will be 0 to 32764 (not allocated),
6472 or 32780 to 65536 (header allocated). For new plt/got, the
6473 corresponding ranges are 0 to 32768 and 32780 to 65536. */
6474 if (htab->got->size <= 32768)
6475 {
6476 g_o_t = htab->got->size;
6477 if (htab->plt_type == PLT_OLD)
6478 g_o_t += 4;
6479 htab->got->size += htab->got_header_size;
6480 }
6481
6482 htab->elf.hgot->root.u.def.value = g_o_t;
6483 }
6484 if (bfd_link_pic (info))
6485 {
6486 struct elf_link_hash_entry *sda = htab->sdata[0].sym;
6487
6488 sda->root.u.def.section = htab->elf.hgot->root.u.def.section;
6489 sda->root.u.def.value = htab->elf.hgot->root.u.def.value;
6490 }
6491 if (info->emitrelocations)
6492 {
6493 struct elf_link_hash_entry *sda = htab->sdata[0].sym;
6494
6495 if (sda != NULL && sda->ref_regular)
6496 sda->root.u.def.section->flags |= SEC_KEEP;
6497 sda = htab->sdata[1].sym;
6498 if (sda != NULL && sda->ref_regular)
6499 sda->root.u.def.section->flags |= SEC_KEEP;
6500 }
6501
6502 if (htab->glink != NULL
6503 && htab->glink->size != 0
6504 && htab->elf.dynamic_sections_created)
6505 {
6506 htab->glink_pltresolve = htab->glink->size;
6507 /* Space for the branch table. */
6508 htab->glink->size += htab->glink->size / (GLINK_ENTRY_SIZE / 4) - 4;
6509 /* Pad out to align the start of PLTresolve. */
6510 htab->glink->size += -htab->glink->size & (htab->params->ppc476_workaround
6511 ? 63 : 15);
6512 htab->glink->size += GLINK_PLTRESOLVE;
6513
6514 if (htab->params->emit_stub_syms)
6515 {
6516 struct elf_link_hash_entry *sh;
6517 sh = elf_link_hash_lookup (&htab->elf, "__glink",
6518 TRUE, FALSE, FALSE);
6519 if (sh == NULL)
6520 return FALSE;
6521 if (sh->root.type == bfd_link_hash_new)
6522 {
6523 sh->root.type = bfd_link_hash_defined;
6524 sh->root.u.def.section = htab->glink;
6525 sh->root.u.def.value = htab->glink_pltresolve;
6526 sh->ref_regular = 1;
6527 sh->def_regular = 1;
6528 sh->ref_regular_nonweak = 1;
6529 sh->forced_local = 1;
6530 sh->non_elf = 0;
6531 sh->root.linker_def = 1;
6532 }
6533 sh = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve",
6534 TRUE, FALSE, FALSE);
6535 if (sh == NULL)
6536 return FALSE;
6537 if (sh->root.type == bfd_link_hash_new)
6538 {
6539 sh->root.type = bfd_link_hash_defined;
6540 sh->root.u.def.section = htab->glink;
6541 sh->root.u.def.value = htab->glink->size - GLINK_PLTRESOLVE;
6542 sh->ref_regular = 1;
6543 sh->def_regular = 1;
6544 sh->ref_regular_nonweak = 1;
6545 sh->forced_local = 1;
6546 sh->non_elf = 0;
6547 sh->root.linker_def = 1;
6548 }
6549 }
6550 }
6551
6552 if (htab->glink != NULL
6553 && htab->glink->size != 0
6554 && htab->glink_eh_frame != NULL
6555 && !bfd_is_abs_section (htab->glink_eh_frame->output_section)
6556 && _bfd_elf_eh_frame_present (info))
6557 {
6558 s = htab->glink_eh_frame;
6559 s->size = sizeof (glink_eh_frame_cie) + 20;
6560 if (bfd_link_pic (info))
6561 {
6562 s->size += 4;
6563 if (htab->glink->size - GLINK_PLTRESOLVE + 8 >= 256)
6564 s->size += 4;
6565 }
6566 }
6567
6568 /* We've now determined the sizes of the various dynamic sections.
6569 Allocate memory for them. */
6570 relocs = FALSE;
6571 for (s = htab->elf.dynobj->sections; s != NULL; s = s->next)
6572 {
6573 bfd_boolean strip_section = TRUE;
6574
6575 if ((s->flags & SEC_LINKER_CREATED) == 0)
6576 continue;
6577
6578 if (s == htab->plt
6579 || s == htab->got)
6580 {
6581 /* We'd like to strip these sections if they aren't needed, but if
6582 we've exported dynamic symbols from them we must leave them.
6583 It's too late to tell BFD to get rid of the symbols. */
6584 if (htab->elf.hplt != NULL)
6585 strip_section = FALSE;
6586 /* Strip this section if we don't need it; see the
6587 comment below. */
6588 }
6589 else if (s == htab->iplt
6590 || s == htab->glink
6591 || s == htab->glink_eh_frame
6592 || s == htab->sgotplt
6593 || s == htab->sbss
6594 || s == htab->dynbss
6595 || s == htab->dynsbss)
6596 {
6597 /* Strip these too. */
6598 }
6599 else if (s == htab->sdata[0].section
6600 || s == htab->sdata[1].section)
6601 {
6602 strip_section = (s->flags & SEC_KEEP) == 0;
6603 }
6604 else if (CONST_STRNEQ (bfd_get_section_name (htab->elf.dynobj, s),
6605 ".rela"))
6606 {
6607 if (s->size != 0)
6608 {
6609 /* Remember whether there are any relocation sections. */
6610 relocs = TRUE;
6611
6612 /* We use the reloc_count field as a counter if we need
6613 to copy relocs into the output file. */
6614 s->reloc_count = 0;
6615 }
6616 }
6617 else
6618 {
6619 /* It's not one of our sections, so don't allocate space. */
6620 continue;
6621 }
6622
6623 if (s->size == 0 && strip_section)
6624 {
6625 /* If we don't need this section, strip it from the
6626 output file. This is mostly to handle .rela.bss and
6627 .rela.plt. We must create both sections in
6628 create_dynamic_sections, because they must be created
6629 before the linker maps input sections to output
6630 sections. The linker does that before
6631 adjust_dynamic_symbol is called, and it is that
6632 function which decides whether anything needs to go
6633 into these sections. */
6634 s->flags |= SEC_EXCLUDE;
6635 continue;
6636 }
6637
6638 if ((s->flags & SEC_HAS_CONTENTS) == 0)
6639 continue;
6640
6641 /* Allocate memory for the section contents. */
6642 s->contents = bfd_zalloc (htab->elf.dynobj, s->size);
6643 if (s->contents == NULL)
6644 return FALSE;
6645 }
6646
6647 if (htab->elf.dynamic_sections_created)
6648 {
6649 /* Add some entries to the .dynamic section. We fill in the
6650 values later, in ppc_elf_finish_dynamic_sections, but we
6651 must add the entries now so that we get the correct size for
6652 the .dynamic section. The DT_DEBUG entry is filled in by the
6653 dynamic linker and used by the debugger. */
6654 #define add_dynamic_entry(TAG, VAL) \
6655 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
6656
6657 if (bfd_link_executable (info))
6658 {
6659 if (!add_dynamic_entry (DT_DEBUG, 0))
6660 return FALSE;
6661 }
6662
6663 if (htab->plt != NULL && htab->plt->size != 0)
6664 {
6665 if (!add_dynamic_entry (DT_PLTGOT, 0)
6666 || !add_dynamic_entry (DT_PLTRELSZ, 0)
6667 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
6668 || !add_dynamic_entry (DT_JMPREL, 0))
6669 return FALSE;
6670 }
6671
6672 if (htab->plt_type == PLT_NEW
6673 && htab->glink != NULL
6674 && htab->glink->size != 0)
6675 {
6676 if (!add_dynamic_entry (DT_PPC_GOT, 0))
6677 return FALSE;
6678 if (!htab->params->no_tls_get_addr_opt
6679 && htab->tls_get_addr != NULL
6680 && htab->tls_get_addr->plt.plist != NULL
6681 && !add_dynamic_entry (DT_PPC_OPT, PPC_OPT_TLS))
6682 return FALSE;
6683 }
6684
6685 if (relocs)
6686 {
6687 if (!add_dynamic_entry (DT_RELA, 0)
6688 || !add_dynamic_entry (DT_RELASZ, 0)
6689 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
6690 return FALSE;
6691 }
6692
6693 /* If any dynamic relocs apply to a read-only section, then we
6694 need a DT_TEXTREL entry. */
6695 if ((info->flags & DF_TEXTREL) == 0)
6696 elf_link_hash_traverse (elf_hash_table (info), maybe_set_textrel,
6697 info);
6698
6699 if ((info->flags & DF_TEXTREL) != 0)
6700 {
6701 if (!add_dynamic_entry (DT_TEXTREL, 0))
6702 return FALSE;
6703 }
6704 if (htab->is_vxworks
6705 && !elf_vxworks_add_dynamic_entries (output_bfd, info))
6706 return FALSE;
6707 }
6708 #undef add_dynamic_entry
6709
6710 if (htab->glink_eh_frame != NULL
6711 && htab->glink_eh_frame->contents != NULL)
6712 {
6713 unsigned char *p = htab->glink_eh_frame->contents;
6714 bfd_vma val;
6715
6716 memcpy (p, glink_eh_frame_cie, sizeof (glink_eh_frame_cie));
6717 /* CIE length (rewrite in case little-endian). */
6718 bfd_put_32 (htab->elf.dynobj, sizeof (glink_eh_frame_cie) - 4, p);
6719 p += sizeof (glink_eh_frame_cie);
6720 /* FDE length. */
6721 val = htab->glink_eh_frame->size - 4 - sizeof (glink_eh_frame_cie);
6722 bfd_put_32 (htab->elf.dynobj, val, p);
6723 p += 4;
6724 /* CIE pointer. */
6725 val = p - htab->glink_eh_frame->contents;
6726 bfd_put_32 (htab->elf.dynobj, val, p);
6727 p += 4;
6728 /* Offset to .glink. Set later. */
6729 p += 4;
6730 /* .glink size. */
6731 bfd_put_32 (htab->elf.dynobj, htab->glink->size, p);
6732 p += 4;
6733 /* Augmentation. */
6734 p += 1;
6735
6736 if (bfd_link_pic (info)
6737 && htab->elf.dynamic_sections_created)
6738 {
6739 bfd_vma adv = (htab->glink->size - GLINK_PLTRESOLVE + 8) >> 2;
6740 if (adv < 64)
6741 *p++ = DW_CFA_advance_loc + adv;
6742 else if (adv < 256)
6743 {
6744 *p++ = DW_CFA_advance_loc1;
6745 *p++ = adv;
6746 }
6747 else if (adv < 65536)
6748 {
6749 *p++ = DW_CFA_advance_loc2;
6750 bfd_put_16 (htab->elf.dynobj, adv, p);
6751 p += 2;
6752 }
6753 else
6754 {
6755 *p++ = DW_CFA_advance_loc4;
6756 bfd_put_32 (htab->elf.dynobj, adv, p);
6757 p += 4;
6758 }
6759 *p++ = DW_CFA_register;
6760 *p++ = 65;
6761 p++;
6762 *p++ = DW_CFA_advance_loc + 4;
6763 *p++ = DW_CFA_restore_extended;
6764 *p++ = 65;
6765 }
6766 BFD_ASSERT ((bfd_vma) ((p + 3 - htab->glink_eh_frame->contents) & -4)
6767 == htab->glink_eh_frame->size);
6768 }
6769
6770 return TRUE;
6771 }
6772
6773 /* Arrange to have _SDA_BASE_ or _SDA2_BASE_ stripped from the output
6774 if it looks like nothing is using them. */
6775
6776 static void
6777 maybe_strip_sdasym (bfd *output_bfd, elf_linker_section_t *lsect)
6778 {
6779 struct elf_link_hash_entry *sda = lsect->sym;
6780
6781 if (sda != NULL && !sda->ref_regular && sda->dynindx == -1)
6782 {
6783 asection *s;
6784
6785 s = bfd_get_section_by_name (output_bfd, lsect->name);
6786 if (s == NULL || bfd_section_removed_from_list (output_bfd, s))
6787 {
6788 s = bfd_get_section_by_name (output_bfd, lsect->bss_name);
6789 if (s == NULL || bfd_section_removed_from_list (output_bfd, s))
6790 {
6791 sda->def_regular = 0;
6792 /* This is somewhat magic. See elf_link_output_extsym. */
6793 sda->ref_dynamic = 1;
6794 sda->forced_local = 0;
6795 }
6796 }
6797 }
6798 }
6799
6800 void
6801 ppc_elf_maybe_strip_sdata_syms (struct bfd_link_info *info)
6802 {
6803 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
6804
6805 if (htab != NULL)
6806 {
6807 maybe_strip_sdasym (info->output_bfd, &htab->sdata[0]);
6808 maybe_strip_sdasym (info->output_bfd, &htab->sdata[1]);
6809 }
6810 }
6811
6812
6813 /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
6814
6815 static bfd_boolean
6816 ppc_elf_hash_symbol (struct elf_link_hash_entry *h)
6817 {
6818 if (h->plt.plist != NULL
6819 && !h->def_regular
6820 && (!h->pointer_equality_needed
6821 || !h->ref_regular_nonweak))
6822 return FALSE;
6823
6824 return _bfd_elf_hash_symbol (h);
6825 }
6826 \f
6827 #define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0]))
6828
6829 /* Relaxation trampolines. r12 is available for clobbering (r11, is
6830 used for some functions that are allowed to break the ABI). */
6831 static const int shared_stub_entry[] =
6832 {
6833 0x7c0802a6, /* mflr 0 */
6834 0x429f0005, /* bcl 20, 31, .Lxxx */
6835 0x7d8802a6, /* mflr 12 */
6836 0x3d8c0000, /* addis 12, 12, (xxx-.Lxxx)@ha */
6837 0x398c0000, /* addi 12, 12, (xxx-.Lxxx)@l */
6838 0x7c0803a6, /* mtlr 0 */
6839 0x7d8903a6, /* mtctr 12 */
6840 0x4e800420, /* bctr */
6841 };
6842
6843 static const int stub_entry[] =
6844 {
6845 0x3d800000, /* lis 12,xxx@ha */
6846 0x398c0000, /* addi 12,12,xxx@l */
6847 0x7d8903a6, /* mtctr 12 */
6848 0x4e800420, /* bctr */
6849 };
6850
6851 struct ppc_elf_relax_info
6852 {
6853 unsigned int workaround_size;
6854 unsigned int picfixup_size;
6855 };
6856
6857 /* This function implements long branch trampolines, and the ppc476
6858 icache bug workaround. Any section needing trampolines or patch
6859 space for the workaround has its size extended so that we can
6860 add trampolines at the end of the section. */
6861
6862 static bfd_boolean
6863 ppc_elf_relax_section (bfd *abfd,
6864 asection *isec,
6865 struct bfd_link_info *link_info,
6866 bfd_boolean *again)
6867 {
6868 struct one_branch_fixup
6869 {
6870 struct one_branch_fixup *next;
6871 asection *tsec;
6872 /* Final link, can use the symbol offset. For a
6873 relocatable link we use the symbol's index. */
6874 bfd_vma toff;
6875 bfd_vma trampoff;
6876 };
6877
6878 Elf_Internal_Shdr *symtab_hdr;
6879 bfd_byte *contents = NULL;
6880 Elf_Internal_Sym *isymbuf = NULL;
6881 Elf_Internal_Rela *internal_relocs = NULL;
6882 Elf_Internal_Rela *irel, *irelend = NULL;
6883 struct one_branch_fixup *branch_fixups = NULL;
6884 struct ppc_elf_relax_info *relax_info = NULL;
6885 unsigned changes = 0;
6886 bfd_boolean workaround_change;
6887 struct ppc_elf_link_hash_table *htab;
6888 bfd_size_type trampbase, trampoff, newsize, picfixup_size;
6889 asection *got2;
6890 bfd_boolean maybe_pasted;
6891
6892 *again = FALSE;
6893
6894 /* No need to do anything with non-alloc or non-code sections. */
6895 if ((isec->flags & SEC_ALLOC) == 0
6896 || (isec->flags & SEC_CODE) == 0
6897 || (isec->flags & SEC_LINKER_CREATED) != 0
6898 || isec->size < 4)
6899 return TRUE;
6900
6901 /* We cannot represent the required PIC relocs in the output, so don't
6902 do anything. The linker doesn't support mixing -shared and -r
6903 anyway. */
6904 if (bfd_link_relocatable (link_info) && bfd_link_pic (link_info))
6905 return TRUE;
6906
6907 htab = ppc_elf_hash_table (link_info);
6908 if (htab == NULL)
6909 return TRUE;
6910
6911 isec->size = (isec->size + 3) & -4;
6912 if (isec->rawsize == 0)
6913 isec->rawsize = isec->size;
6914 trampbase = isec->size;
6915
6916 BFD_ASSERT (isec->sec_info_type == SEC_INFO_TYPE_NONE
6917 || isec->sec_info_type == SEC_INFO_TYPE_TARGET);
6918 isec->sec_info_type = SEC_INFO_TYPE_TARGET;
6919
6920 if (htab->params->ppc476_workaround
6921 || htab->params->pic_fixup > 0)
6922 {
6923 if (elf_section_data (isec)->sec_info == NULL)
6924 {
6925 elf_section_data (isec)->sec_info
6926 = bfd_zalloc (abfd, sizeof (struct ppc_elf_relax_info));
6927 if (elf_section_data (isec)->sec_info == NULL)
6928 return FALSE;
6929 }
6930 relax_info = elf_section_data (isec)->sec_info;
6931 trampbase -= relax_info->workaround_size;
6932 }
6933
6934 maybe_pasted = (strcmp (isec->output_section->name, ".init") == 0
6935 || strcmp (isec->output_section->name, ".fini") == 0);
6936 /* Space for a branch around any trampolines. */
6937 trampoff = trampbase;
6938 if (maybe_pasted && trampbase == isec->rawsize)
6939 trampoff += 4;
6940
6941 symtab_hdr = &elf_symtab_hdr (abfd);
6942 picfixup_size = 0;
6943 if (htab->params->branch_trampolines
6944 || htab->params->pic_fixup > 0)
6945 {
6946 /* Get a copy of the native relocations. */
6947 if (isec->reloc_count != 0)
6948 {
6949 internal_relocs = _bfd_elf_link_read_relocs (abfd, isec, NULL, NULL,
6950 link_info->keep_memory);
6951 if (internal_relocs == NULL)
6952 goto error_return;
6953 }
6954
6955 got2 = bfd_get_section_by_name (abfd, ".got2");
6956
6957 irelend = internal_relocs + isec->reloc_count;
6958 for (irel = internal_relocs; irel < irelend; irel++)
6959 {
6960 unsigned long r_type = ELF32_R_TYPE (irel->r_info);
6961 bfd_vma toff, roff;
6962 asection *tsec;
6963 struct one_branch_fixup *f;
6964 size_t insn_offset = 0;
6965 bfd_vma max_branch_offset = 0, val;
6966 bfd_byte *hit_addr;
6967 unsigned long t0;
6968 struct elf_link_hash_entry *h;
6969 struct plt_entry **plist;
6970 unsigned char sym_type;
6971
6972 switch (r_type)
6973 {
6974 case R_PPC_REL24:
6975 case R_PPC_LOCAL24PC:
6976 case R_PPC_PLTREL24:
6977 max_branch_offset = 1 << 25;
6978 break;
6979
6980 case R_PPC_REL14:
6981 case R_PPC_REL14_BRTAKEN:
6982 case R_PPC_REL14_BRNTAKEN:
6983 max_branch_offset = 1 << 15;
6984 break;
6985
6986 case R_PPC_ADDR16_HA:
6987 if (htab->params->pic_fixup > 0)
6988 break;
6989 continue;
6990
6991 default:
6992 continue;
6993 }
6994
6995 /* Get the value of the symbol referred to by the reloc. */
6996 h = NULL;
6997 if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
6998 {
6999 /* A local symbol. */
7000 Elf_Internal_Sym *isym;
7001
7002 /* Read this BFD's local symbols. */
7003 if (isymbuf == NULL)
7004 {
7005 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
7006 if (isymbuf == NULL)
7007 isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
7008 symtab_hdr->sh_info, 0,
7009 NULL, NULL, NULL);
7010 if (isymbuf == 0)
7011 goto error_return;
7012 }
7013 isym = isymbuf + ELF32_R_SYM (irel->r_info);
7014 if (isym->st_shndx == SHN_UNDEF)
7015 tsec = bfd_und_section_ptr;
7016 else if (isym->st_shndx == SHN_ABS)
7017 tsec = bfd_abs_section_ptr;
7018 else if (isym->st_shndx == SHN_COMMON)
7019 tsec = bfd_com_section_ptr;
7020 else
7021 tsec = bfd_section_from_elf_index (abfd, isym->st_shndx);
7022
7023 toff = isym->st_value;
7024 sym_type = ELF_ST_TYPE (isym->st_info);
7025 }
7026 else
7027 {
7028 /* Global symbol handling. */
7029 unsigned long indx;
7030
7031 indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
7032 h = elf_sym_hashes (abfd)[indx];
7033
7034 while (h->root.type == bfd_link_hash_indirect
7035 || h->root.type == bfd_link_hash_warning)
7036 h = (struct elf_link_hash_entry *) h->root.u.i.link;
7037
7038 if (h->root.type == bfd_link_hash_defined
7039 || h->root.type == bfd_link_hash_defweak)
7040 {
7041 tsec = h->root.u.def.section;
7042 toff = h->root.u.def.value;
7043 }
7044 else if (h->root.type == bfd_link_hash_undefined
7045 || h->root.type == bfd_link_hash_undefweak)
7046 {
7047 tsec = bfd_und_section_ptr;
7048 toff = bfd_link_relocatable (link_info) ? indx : 0;
7049 }
7050 else
7051 continue;
7052
7053 /* If this branch is to __tls_get_addr then we may later
7054 optimise away the call. We won't be needing a long-
7055 branch stub in that case. */
7056 if (bfd_link_executable (link_info)
7057 && h == htab->tls_get_addr
7058 && irel != internal_relocs)
7059 {
7060 unsigned long t_symndx = ELF32_R_SYM (irel[-1].r_info);
7061 unsigned long t_rtype = ELF32_R_TYPE (irel[-1].r_info);
7062 unsigned int tls_mask = 0;
7063
7064 /* The previous reloc should be one of R_PPC_TLSGD or
7065 R_PPC_TLSLD, or for older object files, a reloc
7066 on the __tls_get_addr arg setup insn. Get tls
7067 mask bits from the symbol on that reloc. */
7068 if (t_symndx < symtab_hdr->sh_info)
7069 {
7070 bfd_vma *local_got_offsets = elf_local_got_offsets (abfd);
7071
7072 if (local_got_offsets != NULL)
7073 {
7074 struct plt_entry **local_plt = (struct plt_entry **)
7075 (local_got_offsets + symtab_hdr->sh_info);
7076 char *lgot_masks = (char *)
7077 (local_plt + symtab_hdr->sh_info);
7078 tls_mask = lgot_masks[t_symndx];
7079 }
7080 }
7081 else
7082 {
7083 struct elf_link_hash_entry *th
7084 = elf_sym_hashes (abfd)[t_symndx - symtab_hdr->sh_info];
7085
7086 while (th->root.type == bfd_link_hash_indirect
7087 || th->root.type == bfd_link_hash_warning)
7088 th = (struct elf_link_hash_entry *) th->root.u.i.link;
7089
7090 tls_mask
7091 = ((struct ppc_elf_link_hash_entry *) th)->tls_mask;
7092 }
7093
7094 /* The mask bits tell us if the call will be
7095 optimised away. */
7096 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0
7097 && (t_rtype == R_PPC_TLSGD
7098 || t_rtype == R_PPC_GOT_TLSGD16
7099 || t_rtype == R_PPC_GOT_TLSGD16_LO))
7100 continue;
7101 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0
7102 && (t_rtype == R_PPC_TLSLD
7103 || t_rtype == R_PPC_GOT_TLSLD16
7104 || t_rtype == R_PPC_GOT_TLSLD16_LO))
7105 continue;
7106 }
7107
7108 sym_type = h->type;
7109 }
7110
7111 if (r_type == R_PPC_ADDR16_HA)
7112 {
7113 if (h != NULL
7114 && !h->def_regular
7115 && h->protected_def
7116 && ppc_elf_hash_entry (h)->has_addr16_ha
7117 && ppc_elf_hash_entry (h)->has_addr16_lo)
7118 picfixup_size += 12;
7119 continue;
7120 }
7121
7122 /* The condition here under which we call find_plt_ent must
7123 match that in relocate_section. If we call find_plt_ent here
7124 but not in relocate_section, or vice versa, then the branch
7125 destination used here may be incorrect. */
7126 plist = NULL;
7127 if (h != NULL)
7128 {
7129 /* We know is_branch_reloc (r_type) is true. */
7130 if (h->type == STT_GNU_IFUNC
7131 || r_type == R_PPC_PLTREL24)
7132 plist = &h->plt.plist;
7133 }
7134 else if (sym_type == STT_GNU_IFUNC
7135 && elf_local_got_offsets (abfd) != NULL)
7136 {
7137 bfd_vma *local_got_offsets = elf_local_got_offsets (abfd);
7138 struct plt_entry **local_plt = (struct plt_entry **)
7139 (local_got_offsets + symtab_hdr->sh_info);
7140 plist = local_plt + ELF32_R_SYM (irel->r_info);
7141 }
7142 if (plist != NULL)
7143 {
7144 bfd_vma addend = 0;
7145 struct plt_entry *ent;
7146
7147 if (r_type == R_PPC_PLTREL24 && bfd_link_pic (link_info))
7148 addend = irel->r_addend;
7149 ent = find_plt_ent (plist, got2, addend);
7150 if (ent != NULL)
7151 {
7152 if (htab->plt_type == PLT_NEW
7153 || h == NULL
7154 || !htab->elf.dynamic_sections_created
7155 || h->dynindx == -1)
7156 {
7157 tsec = htab->glink;
7158 toff = ent->glink_offset;
7159 }
7160 else
7161 {
7162 tsec = htab->plt;
7163 toff = ent->plt.offset;
7164 }
7165 }
7166 }
7167
7168 /* If the branch and target are in the same section, you have
7169 no hope of adding stubs. We'll error out later should the
7170 branch overflow. */
7171 if (tsec == isec)
7172 continue;
7173
7174 /* There probably isn't any reason to handle symbols in
7175 SEC_MERGE sections; SEC_MERGE doesn't seem a likely
7176 attribute for a code section, and we are only looking at
7177 branches. However, implement it correctly here as a
7178 reference for other target relax_section functions. */
7179 if (0 && tsec->sec_info_type == SEC_INFO_TYPE_MERGE)
7180 {
7181 /* At this stage in linking, no SEC_MERGE symbol has been
7182 adjusted, so all references to such symbols need to be
7183 passed through _bfd_merged_section_offset. (Later, in
7184 relocate_section, all SEC_MERGE symbols *except* for
7185 section symbols have been adjusted.)
7186
7187 gas may reduce relocations against symbols in SEC_MERGE
7188 sections to a relocation against the section symbol when
7189 the original addend was zero. When the reloc is against
7190 a section symbol we should include the addend in the
7191 offset passed to _bfd_merged_section_offset, since the
7192 location of interest is the original symbol. On the
7193 other hand, an access to "sym+addend" where "sym" is not
7194 a section symbol should not include the addend; Such an
7195 access is presumed to be an offset from "sym"; The
7196 location of interest is just "sym". */
7197 if (sym_type == STT_SECTION)
7198 toff += irel->r_addend;
7199
7200 toff
7201 = _bfd_merged_section_offset (abfd, &tsec,
7202 elf_section_data (tsec)->sec_info,
7203 toff);
7204
7205 if (sym_type != STT_SECTION)
7206 toff += irel->r_addend;
7207 }
7208 /* PLTREL24 addends are special. */
7209 else if (r_type != R_PPC_PLTREL24)
7210 toff += irel->r_addend;
7211
7212 /* Attempted -shared link of non-pic code loses. */
7213 if ((!bfd_link_relocatable (link_info)
7214 && tsec == bfd_und_section_ptr)
7215 || tsec->output_section == NULL
7216 || (tsec->owner != NULL
7217 && (tsec->owner->flags & BFD_PLUGIN) != 0))
7218 continue;
7219
7220 roff = irel->r_offset;
7221
7222 /* If the branch is in range, no need to do anything. */
7223 if (tsec != bfd_und_section_ptr
7224 && (!bfd_link_relocatable (link_info)
7225 /* A relocatable link may have sections moved during
7226 final link, so do not presume they remain in range. */
7227 || tsec->output_section == isec->output_section))
7228 {
7229 bfd_vma symaddr, reladdr;
7230
7231 symaddr = tsec->output_section->vma + tsec->output_offset + toff;
7232 reladdr = isec->output_section->vma + isec->output_offset + roff;
7233 if (symaddr - reladdr + max_branch_offset
7234 < 2 * max_branch_offset)
7235 continue;
7236 }
7237
7238 /* Look for an existing fixup to this address. */
7239 for (f = branch_fixups; f ; f = f->next)
7240 if (f->tsec == tsec && f->toff == toff)
7241 break;
7242
7243 if (f == NULL)
7244 {
7245 size_t size;
7246 unsigned long stub_rtype;
7247
7248 val = trampoff - roff;
7249 if (val >= max_branch_offset)
7250 /* Oh dear, we can't reach a trampoline. Don't try to add
7251 one. We'll report an error later. */
7252 continue;
7253
7254 if (bfd_link_pic (link_info))
7255 {
7256 size = 4 * ARRAY_SIZE (shared_stub_entry);
7257 insn_offset = 12;
7258 }
7259 else
7260 {
7261 size = 4 * ARRAY_SIZE (stub_entry);
7262 insn_offset = 0;
7263 }
7264 stub_rtype = R_PPC_RELAX;
7265 if (tsec == htab->plt
7266 || tsec == htab->glink)
7267 {
7268 stub_rtype = R_PPC_RELAX_PLT;
7269 if (r_type == R_PPC_PLTREL24)
7270 stub_rtype = R_PPC_RELAX_PLTREL24;
7271 }
7272
7273 /* Hijack the old relocation. Since we need two
7274 relocations for this use a "composite" reloc. */
7275 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
7276 stub_rtype);
7277 irel->r_offset = trampoff + insn_offset;
7278 if (r_type == R_PPC_PLTREL24
7279 && stub_rtype != R_PPC_RELAX_PLTREL24)
7280 irel->r_addend = 0;
7281
7282 /* Record the fixup so we don't do it again this section. */
7283 f = bfd_malloc (sizeof (*f));
7284 f->next = branch_fixups;
7285 f->tsec = tsec;
7286 f->toff = toff;
7287 f->trampoff = trampoff;
7288 branch_fixups = f;
7289
7290 trampoff += size;
7291 changes++;
7292 }
7293 else
7294 {
7295 val = f->trampoff - roff;
7296 if (val >= max_branch_offset)
7297 continue;
7298
7299 /* Nop out the reloc, since we're finalizing things here. */
7300 irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
7301 }
7302
7303 /* Get the section contents. */
7304 if (contents == NULL)
7305 {
7306 /* Get cached copy if it exists. */
7307 if (elf_section_data (isec)->this_hdr.contents != NULL)
7308 contents = elf_section_data (isec)->this_hdr.contents;
7309 /* Go get them off disk. */
7310 else if (!bfd_malloc_and_get_section (abfd, isec, &contents))
7311 goto error_return;
7312 }
7313
7314 /* Fix up the existing branch to hit the trampoline. */
7315 hit_addr = contents + roff;
7316 switch (r_type)
7317 {
7318 case R_PPC_REL24:
7319 case R_PPC_LOCAL24PC:
7320 case R_PPC_PLTREL24:
7321 t0 = bfd_get_32 (abfd, hit_addr);
7322 t0 &= ~0x3fffffc;
7323 t0 |= val & 0x3fffffc;
7324 bfd_put_32 (abfd, t0, hit_addr);
7325 break;
7326
7327 case R_PPC_REL14:
7328 case R_PPC_REL14_BRTAKEN:
7329 case R_PPC_REL14_BRNTAKEN:
7330 t0 = bfd_get_32 (abfd, hit_addr);
7331 t0 &= ~0xfffc;
7332 t0 |= val & 0xfffc;
7333 bfd_put_32 (abfd, t0, hit_addr);
7334 break;
7335 }
7336 }
7337
7338 while (branch_fixups != NULL)
7339 {
7340 struct one_branch_fixup *f = branch_fixups;
7341 branch_fixups = branch_fixups->next;
7342 free (f);
7343 }
7344 }
7345
7346 workaround_change = FALSE;
7347 newsize = trampoff;
7348 if (htab->params->ppc476_workaround
7349 && (!bfd_link_relocatable (link_info)
7350 || isec->output_section->alignment_power >= htab->params->pagesize_p2))
7351 {
7352 bfd_vma addr, end_addr;
7353 unsigned int crossings;
7354 bfd_vma pagesize = (bfd_vma) 1 << htab->params->pagesize_p2;
7355
7356 addr = isec->output_section->vma + isec->output_offset;
7357 end_addr = addr + trampoff;
7358 addr &= -pagesize;
7359 crossings = ((end_addr & -pagesize) - addr) >> htab->params->pagesize_p2;
7360 if (crossings != 0)
7361 {
7362 /* Keep space aligned, to ensure the patch code itself does
7363 not cross a page. Don't decrease size calculated on a
7364 previous pass as otherwise we might never settle on a layout. */
7365 newsize = 15 - ((end_addr - 1) & 15);
7366 newsize += crossings * 16;
7367 if (relax_info->workaround_size < newsize)
7368 {
7369 relax_info->workaround_size = newsize;
7370 workaround_change = TRUE;
7371 }
7372 /* Ensure relocate_section is called. */
7373 isec->flags |= SEC_RELOC;
7374 }
7375 newsize = trampoff + relax_info->workaround_size;
7376 }
7377
7378 if (htab->params->pic_fixup > 0)
7379 {
7380 picfixup_size -= relax_info->picfixup_size;
7381 if (picfixup_size != 0)
7382 relax_info->picfixup_size += picfixup_size;
7383 newsize += relax_info->picfixup_size;
7384 }
7385
7386 if (changes != 0 || picfixup_size != 0 || workaround_change)
7387 isec->size = newsize;
7388
7389 if (isymbuf != NULL
7390 && symtab_hdr->contents != (unsigned char *) isymbuf)
7391 {
7392 if (! link_info->keep_memory)
7393 free (isymbuf);
7394 else
7395 {
7396 /* Cache the symbols for elf_link_input_bfd. */
7397 symtab_hdr->contents = (unsigned char *) isymbuf;
7398 }
7399 }
7400
7401 if (contents != NULL
7402 && elf_section_data (isec)->this_hdr.contents != contents)
7403 {
7404 if (!changes && !link_info->keep_memory)
7405 free (contents);
7406 else
7407 {
7408 /* Cache the section contents for elf_link_input_bfd. */
7409 elf_section_data (isec)->this_hdr.contents = contents;
7410 }
7411 }
7412
7413 changes += picfixup_size;
7414 if (changes != 0)
7415 {
7416 /* Append sufficient NOP relocs so we can write out relocation
7417 information for the trampolines. */
7418 Elf_Internal_Shdr *rel_hdr;
7419 Elf_Internal_Rela *new_relocs = bfd_malloc ((changes + isec->reloc_count)
7420 * sizeof (*new_relocs));
7421 unsigned ix;
7422
7423 if (!new_relocs)
7424 goto error_return;
7425 memcpy (new_relocs, internal_relocs,
7426 isec->reloc_count * sizeof (*new_relocs));
7427 for (ix = changes; ix--;)
7428 {
7429 irel = new_relocs + ix + isec->reloc_count;
7430
7431 irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
7432 }
7433 if (internal_relocs != elf_section_data (isec)->relocs)
7434 free (internal_relocs);
7435 elf_section_data (isec)->relocs = new_relocs;
7436 isec->reloc_count += changes;
7437 rel_hdr = _bfd_elf_single_rel_hdr (isec);
7438 rel_hdr->sh_size += changes * rel_hdr->sh_entsize;
7439 }
7440 else if (internal_relocs != NULL
7441 && elf_section_data (isec)->relocs != internal_relocs)
7442 free (internal_relocs);
7443
7444 *again = changes != 0 || workaround_change;
7445 return TRUE;
7446
7447 error_return:
7448 while (branch_fixups != NULL)
7449 {
7450 struct one_branch_fixup *f = branch_fixups;
7451 branch_fixups = branch_fixups->next;
7452 free (f);
7453 }
7454 if (isymbuf != NULL && (unsigned char *) isymbuf != symtab_hdr->contents)
7455 free (isymbuf);
7456 if (contents != NULL
7457 && elf_section_data (isec)->this_hdr.contents != contents)
7458 free (contents);
7459 if (internal_relocs != NULL
7460 && elf_section_data (isec)->relocs != internal_relocs)
7461 free (internal_relocs);
7462 return FALSE;
7463 }
7464 \f
7465 /* What to do when ld finds relocations against symbols defined in
7466 discarded sections. */
7467
7468 static unsigned int
7469 ppc_elf_action_discarded (asection *sec)
7470 {
7471 if (strcmp (".fixup", sec->name) == 0)
7472 return 0;
7473
7474 if (strcmp (".got2", sec->name) == 0)
7475 return 0;
7476
7477 return _bfd_elf_default_action_discarded (sec);
7478 }
7479 \f
7480 /* Fill in the address for a pointer generated in a linker section. */
7481
7482 static bfd_vma
7483 elf_finish_pointer_linker_section (bfd *input_bfd,
7484 elf_linker_section_t *lsect,
7485 struct elf_link_hash_entry *h,
7486 bfd_vma relocation,
7487 const Elf_Internal_Rela *rel)
7488 {
7489 elf_linker_section_pointers_t *linker_section_ptr;
7490
7491 BFD_ASSERT (lsect != NULL);
7492
7493 if (h != NULL)
7494 {
7495 /* Handle global symbol. */
7496 struct ppc_elf_link_hash_entry *eh;
7497
7498 eh = (struct ppc_elf_link_hash_entry *) h;
7499 BFD_ASSERT (eh->elf.def_regular);
7500 linker_section_ptr = eh->linker_section_pointer;
7501 }
7502 else
7503 {
7504 /* Handle local symbol. */
7505 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
7506
7507 BFD_ASSERT (is_ppc_elf (input_bfd));
7508 BFD_ASSERT (elf_local_ptr_offsets (input_bfd) != NULL);
7509 linker_section_ptr = elf_local_ptr_offsets (input_bfd)[r_symndx];
7510 }
7511
7512 linker_section_ptr = elf_find_pointer_linker_section (linker_section_ptr,
7513 rel->r_addend,
7514 lsect);
7515 BFD_ASSERT (linker_section_ptr != NULL);
7516
7517 /* Offset will always be a multiple of four, so use the bottom bit
7518 as a "written" flag. */
7519 if ((linker_section_ptr->offset & 1) == 0)
7520 {
7521 bfd_put_32 (lsect->section->owner,
7522 relocation + linker_section_ptr->addend,
7523 lsect->section->contents + linker_section_ptr->offset);
7524 linker_section_ptr->offset += 1;
7525 }
7526
7527 relocation = (lsect->section->output_section->vma
7528 + lsect->section->output_offset
7529 + linker_section_ptr->offset - 1
7530 - SYM_VAL (lsect->sym));
7531
7532 #ifdef DEBUG
7533 fprintf (stderr,
7534 "Finish pointer in linker section %s, offset = %ld (0x%lx)\n",
7535 lsect->name, (long) relocation, (long) relocation);
7536 #endif
7537
7538 return relocation;
7539 }
7540
7541 #define PPC_LO(v) ((v) & 0xffff)
7542 #define PPC_HI(v) (((v) >> 16) & 0xffff)
7543 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
7544
7545 static void
7546 write_glink_stub (struct plt_entry *ent, asection *plt_sec, unsigned char *p,
7547 struct bfd_link_info *info)
7548 {
7549 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
7550 bfd *output_bfd = info->output_bfd;
7551 bfd_vma plt;
7552
7553 plt = ((ent->plt.offset & ~1)
7554 + plt_sec->output_section->vma
7555 + plt_sec->output_offset);
7556
7557 if (bfd_link_pic (info))
7558 {
7559 bfd_vma got = 0;
7560
7561 if (ent->addend >= 32768)
7562 got = (ent->addend
7563 + ent->sec->output_section->vma
7564 + ent->sec->output_offset);
7565 else if (htab->elf.hgot != NULL)
7566 got = SYM_VAL (htab->elf.hgot);
7567
7568 plt -= got;
7569
7570 if (plt + 0x8000 < 0x10000)
7571 {
7572 bfd_put_32 (output_bfd, LWZ_11_30 + PPC_LO (plt), p);
7573 p += 4;
7574 bfd_put_32 (output_bfd, MTCTR_11, p);
7575 p += 4;
7576 bfd_put_32 (output_bfd, BCTR, p);
7577 p += 4;
7578 bfd_put_32 (output_bfd, htab->params->ppc476_workaround ? BA : NOP, p);
7579 p += 4;
7580 }
7581 else
7582 {
7583 bfd_put_32 (output_bfd, ADDIS_11_30 + PPC_HA (plt), p);
7584 p += 4;
7585 bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
7586 p += 4;
7587 bfd_put_32 (output_bfd, MTCTR_11, p);
7588 p += 4;
7589 bfd_put_32 (output_bfd, BCTR, p);
7590 p += 4;
7591 }
7592 }
7593 else
7594 {
7595 bfd_put_32 (output_bfd, LIS_11 + PPC_HA (plt), p);
7596 p += 4;
7597 bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
7598 p += 4;
7599 bfd_put_32 (output_bfd, MTCTR_11, p);
7600 p += 4;
7601 bfd_put_32 (output_bfd, BCTR, p);
7602 p += 4;
7603 }
7604 }
7605
7606 /* Return true if symbol is defined statically. */
7607
7608 static bfd_boolean
7609 is_static_defined (struct elf_link_hash_entry *h)
7610 {
7611 return ((h->root.type == bfd_link_hash_defined
7612 || h->root.type == bfd_link_hash_defweak)
7613 && h->root.u.def.section != NULL
7614 && h->root.u.def.section->output_section != NULL);
7615 }
7616
7617 /* If INSN is an opcode that may be used with an @tls operand, return
7618 the transformed insn for TLS optimisation, otherwise return 0. If
7619 REG is non-zero only match an insn with RB or RA equal to REG. */
7620
7621 unsigned int
7622 _bfd_elf_ppc_at_tls_transform (unsigned int insn, unsigned int reg)
7623 {
7624 unsigned int rtra;
7625
7626 if ((insn & (0x3f << 26)) != 31 << 26)
7627 return 0;
7628
7629 if (reg == 0 || ((insn >> 11) & 0x1f) == reg)
7630 rtra = insn & ((1 << 26) - (1 << 16));
7631 else if (((insn >> 16) & 0x1f) == reg)
7632 rtra = (insn & (0x1f << 21)) | ((insn & (0x1f << 11)) << 5);
7633 else
7634 return 0;
7635
7636 if ((insn & (0x3ff << 1)) == 266 << 1)
7637 /* add -> addi. */
7638 insn = 14 << 26;
7639 else if ((insn & (0x1f << 1)) == 23 << 1
7640 && ((insn & (0x1f << 6)) < 14 << 6
7641 || ((insn & (0x1f << 6)) >= 16 << 6
7642 && (insn & (0x1f << 6)) < 24 << 6)))
7643 /* load and store indexed -> dform. */
7644 insn = (32 | ((insn >> 6) & 0x1f)) << 26;
7645 else if ((insn & (((0x1a << 5) | 0x1f) << 1)) == 21 << 1)
7646 /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
7647 insn = ((58 | ((insn >> 6) & 4)) << 26) | ((insn >> 6) & 1);
7648 else if ((insn & (((0x1f << 5) | 0x1f) << 1)) == 341 << 1)
7649 /* lwax -> lwa. */
7650 insn = (58 << 26) | 2;
7651 else
7652 return 0;
7653 insn |= rtra;
7654 return insn;
7655 }
7656
7657 /* If INSN is an opcode that may be used with an @tprel operand, return
7658 the transformed insn for an undefined weak symbol, ie. with the
7659 thread pointer REG operand removed. Otherwise return 0. */
7660
7661 unsigned int
7662 _bfd_elf_ppc_at_tprel_transform (unsigned int insn, unsigned int reg)
7663 {
7664 if ((insn & (0x1f << 16)) == reg << 16
7665 && ((insn & (0x3f << 26)) == 14u << 26 /* addi */
7666 || (insn & (0x3f << 26)) == 15u << 26 /* addis */
7667 || (insn & (0x3f << 26)) == 32u << 26 /* lwz */
7668 || (insn & (0x3f << 26)) == 34u << 26 /* lbz */
7669 || (insn & (0x3f << 26)) == 36u << 26 /* stw */
7670 || (insn & (0x3f << 26)) == 38u << 26 /* stb */
7671 || (insn & (0x3f << 26)) == 40u << 26 /* lhz */
7672 || (insn & (0x3f << 26)) == 42u << 26 /* lha */
7673 || (insn & (0x3f << 26)) == 44u << 26 /* sth */
7674 || (insn & (0x3f << 26)) == 46u << 26 /* lmw */
7675 || (insn & (0x3f << 26)) == 47u << 26 /* stmw */
7676 || (insn & (0x3f << 26)) == 48u << 26 /* lfs */
7677 || (insn & (0x3f << 26)) == 50u << 26 /* lfd */
7678 || (insn & (0x3f << 26)) == 52u << 26 /* stfs */
7679 || (insn & (0x3f << 26)) == 54u << 26 /* stfd */
7680 || ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
7681 && (insn & 3) != 1)
7682 || ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */
7683 && ((insn & 3) == 0 || (insn & 3) == 3))))
7684 {
7685 insn &= ~(0x1f << 16);
7686 }
7687 else if ((insn & (0x1f << 21)) == reg << 21
7688 && ((insn & (0x3e << 26)) == 24u << 26 /* ori, oris */
7689 || (insn & (0x3e << 26)) == 26u << 26 /* xori,xoris */
7690 || (insn & (0x3e << 26)) == 28u << 26 /* andi,andis */))
7691 {
7692 insn &= ~(0x1f << 21);
7693 insn |= (insn & (0x1f << 16)) << 5;
7694 if ((insn & (0x3e << 26)) == 26 << 26 /* xori,xoris */)
7695 insn -= 2 >> 26; /* convert to ori,oris */
7696 }
7697 else
7698 insn = 0;
7699 return insn;
7700 }
7701
7702 static bfd_boolean
7703 is_insn_ds_form (unsigned int insn)
7704 {
7705 return ((insn & (0x3f << 26)) == 58u << 26 /* ld,ldu,lwa */
7706 || (insn & (0x3f << 26)) == 62u << 26 /* std,stdu,stq */
7707 || (insn & (0x3f << 26)) == 57u << 26 /* lfdp */
7708 || (insn & (0x3f << 26)) == 61u << 26 /* stfdp */);
7709 }
7710
7711 static bfd_boolean
7712 is_insn_dq_form (unsigned int insn)
7713 {
7714 return ((insn & (0x3f << 26)) == 56u << 26 /* lq */
7715 || ((insn & (0x3f << 26)) == (61u << 26) /* lxv, stxv */
7716 && (insn & 3) == 1));
7717 }
7718
7719 /* The RELOCATE_SECTION function is called by the ELF backend linker
7720 to handle the relocations for a section.
7721
7722 The relocs are always passed as Rela structures; if the section
7723 actually uses Rel structures, the r_addend field will always be
7724 zero.
7725
7726 This function is responsible for adjust the section contents as
7727 necessary, and (if using Rela relocs and generating a
7728 relocatable output file) adjusting the reloc addend as
7729 necessary.
7730
7731 This function does not have to worry about setting the reloc
7732 address or the reloc symbol index.
7733
7734 LOCAL_SYMS is a pointer to the swapped in local symbols.
7735
7736 LOCAL_SECTIONS is an array giving the section in the input file
7737 corresponding to the st_shndx field of each local symbol.
7738
7739 The global hash table entry for the global symbols can be found
7740 via elf_sym_hashes (input_bfd).
7741
7742 When generating relocatable output, this function must handle
7743 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
7744 going to be the section symbol corresponding to the output
7745 section, which means that the addend must be adjusted
7746 accordingly. */
7747
7748 static bfd_boolean
7749 ppc_elf_relocate_section (bfd *output_bfd,
7750 struct bfd_link_info *info,
7751 bfd *input_bfd,
7752 asection *input_section,
7753 bfd_byte *contents,
7754 Elf_Internal_Rela *relocs,
7755 Elf_Internal_Sym *local_syms,
7756 asection **local_sections)
7757 {
7758 Elf_Internal_Shdr *symtab_hdr;
7759 struct elf_link_hash_entry **sym_hashes;
7760 struct ppc_elf_link_hash_table *htab;
7761 Elf_Internal_Rela *rel;
7762 Elf_Internal_Rela *wrel;
7763 Elf_Internal_Rela *relend;
7764 Elf_Internal_Rela outrel;
7765 asection *got2;
7766 bfd_vma *local_got_offsets;
7767 bfd_boolean ret = TRUE;
7768 bfd_vma d_offset = (bfd_big_endian (output_bfd) ? 2 : 0);
7769 bfd_boolean is_vxworks_tls;
7770 unsigned int picfixup_size = 0;
7771 struct ppc_elf_relax_info *relax_info = NULL;
7772
7773 #ifdef DEBUG
7774 _bfd_error_handler ("ppc_elf_relocate_section called for %B section %A, "
7775 "%ld relocations%s",
7776 input_bfd, input_section,
7777 (long) input_section->reloc_count,
7778 (bfd_link_relocatable (info)) ? " (relocatable)" : "");
7779 #endif
7780
7781 got2 = bfd_get_section_by_name (input_bfd, ".got2");
7782
7783 /* Initialize howto table if not already done. */
7784 if (!ppc_elf_howto_table[R_PPC_ADDR32])
7785 ppc_elf_howto_init ();
7786
7787 htab = ppc_elf_hash_table (info);
7788 local_got_offsets = elf_local_got_offsets (input_bfd);
7789 symtab_hdr = &elf_symtab_hdr (input_bfd);
7790 sym_hashes = elf_sym_hashes (input_bfd);
7791 /* We have to handle relocations in vxworks .tls_vars sections
7792 specially, because the dynamic loader is 'weird'. */
7793 is_vxworks_tls = (htab->is_vxworks && bfd_link_pic (info)
7794 && !strcmp (input_section->output_section->name,
7795 ".tls_vars"));
7796 if (input_section->sec_info_type == SEC_INFO_TYPE_TARGET)
7797 relax_info = elf_section_data (input_section)->sec_info;
7798 rel = wrel = relocs;
7799 relend = relocs + input_section->reloc_count;
7800 for (; rel < relend; wrel++, rel++)
7801 {
7802 enum elf_ppc_reloc_type r_type;
7803 bfd_vma addend;
7804 bfd_reloc_status_type r;
7805 Elf_Internal_Sym *sym;
7806 asection *sec;
7807 struct elf_link_hash_entry *h;
7808 const char *sym_name;
7809 reloc_howto_type *howto;
7810 unsigned long r_symndx;
7811 bfd_vma relocation;
7812 bfd_vma branch_bit, from;
7813 bfd_boolean unresolved_reloc;
7814 bfd_boolean warned;
7815 unsigned int tls_type, tls_mask, tls_gd;
7816 struct plt_entry **ifunc;
7817 struct reloc_howto_struct alt_howto;
7818
7819 again:
7820 r_type = ELF32_R_TYPE (rel->r_info);
7821 sym = NULL;
7822 sec = NULL;
7823 h = NULL;
7824 unresolved_reloc = FALSE;
7825 warned = FALSE;
7826 r_symndx = ELF32_R_SYM (rel->r_info);
7827
7828 if (r_symndx < symtab_hdr->sh_info)
7829 {
7830 sym = local_syms + r_symndx;
7831 sec = local_sections[r_symndx];
7832 sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
7833
7834 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
7835 }
7836 else
7837 {
7838 bfd_boolean ignored;
7839
7840 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
7841 r_symndx, symtab_hdr, sym_hashes,
7842 h, sec, relocation,
7843 unresolved_reloc, warned, ignored);
7844
7845 sym_name = h->root.root.string;
7846 }
7847
7848 if (sec != NULL && discarded_section (sec))
7849 {
7850 /* For relocs against symbols from removed linkonce sections,
7851 or sections discarded by a linker script, we just want the
7852 section contents zeroed. Avoid any special processing. */
7853 howto = NULL;
7854 if (r_type < R_PPC_max)
7855 howto = ppc_elf_howto_table[r_type];
7856
7857 _bfd_clear_contents (howto, input_bfd, input_section,
7858 contents + rel->r_offset);
7859 wrel->r_offset = rel->r_offset;
7860 wrel->r_info = 0;
7861 wrel->r_addend = 0;
7862
7863 /* For ld -r, remove relocations in debug sections against
7864 sections defined in discarded sections. Not done for
7865 non-debug to preserve relocs in .eh_frame which the
7866 eh_frame editing code expects to be present. */
7867 if (bfd_link_relocatable (info)
7868 && (input_section->flags & SEC_DEBUGGING))
7869 wrel--;
7870
7871 continue;
7872 }
7873
7874 if (bfd_link_relocatable (info))
7875 {
7876 if (got2 != NULL
7877 && r_type == R_PPC_PLTREL24
7878 && rel->r_addend != 0)
7879 {
7880 /* R_PPC_PLTREL24 is rather special. If non-zero, the
7881 addend specifies the GOT pointer offset within .got2. */
7882 rel->r_addend += got2->output_offset;
7883 }
7884 if (r_type != R_PPC_RELAX_PLT
7885 && r_type != R_PPC_RELAX_PLTREL24
7886 && r_type != R_PPC_RELAX)
7887 goto copy_reloc;
7888 }
7889
7890 /* TLS optimizations. Replace instruction sequences and relocs
7891 based on information we collected in tls_optimize. We edit
7892 RELOCS so that --emit-relocs will output something sensible
7893 for the final instruction stream. */
7894 tls_mask = 0;
7895 tls_gd = 0;
7896 if (h != NULL)
7897 tls_mask = ((struct ppc_elf_link_hash_entry *) h)->tls_mask;
7898 else if (local_got_offsets != NULL)
7899 {
7900 struct plt_entry **local_plt;
7901 char *lgot_masks;
7902 local_plt
7903 = (struct plt_entry **) (local_got_offsets + symtab_hdr->sh_info);
7904 lgot_masks = (char *) (local_plt + symtab_hdr->sh_info);
7905 tls_mask = lgot_masks[r_symndx];
7906 }
7907
7908 /* Ensure reloc mapping code below stays sane. */
7909 if ((R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TLSGD16 & 3)
7910 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TLSGD16_LO & 3)
7911 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TLSGD16_HI & 3)
7912 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TLSGD16_HA & 3)
7913 || (R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TPREL16 & 3)
7914 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TPREL16_LO & 3)
7915 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TPREL16_HI & 3)
7916 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TPREL16_HA & 3))
7917 abort ();
7918 switch (r_type)
7919 {
7920 default:
7921 break;
7922
7923 case R_PPC_GOT_TPREL16:
7924 case R_PPC_GOT_TPREL16_LO:
7925 if ((tls_mask & TLS_TLS) != 0
7926 && (tls_mask & TLS_TPREL) == 0)
7927 {
7928 bfd_vma insn;
7929
7930 insn = bfd_get_32 (output_bfd,
7931 contents + rel->r_offset - d_offset);
7932 insn &= 31 << 21;
7933 insn |= 0x3c020000; /* addis 0,2,0 */
7934 bfd_put_32 (output_bfd, insn,
7935 contents + rel->r_offset - d_offset);
7936 r_type = R_PPC_TPREL16_HA;
7937 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7938 }
7939 break;
7940
7941 case R_PPC_TLS:
7942 if ((tls_mask & TLS_TLS) != 0
7943 && (tls_mask & TLS_TPREL) == 0)
7944 {
7945 bfd_vma insn;
7946
7947 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
7948 insn = _bfd_elf_ppc_at_tls_transform (insn, 2);
7949 if (insn == 0)
7950 abort ();
7951 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
7952 r_type = R_PPC_TPREL16_LO;
7953 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7954
7955 /* Was PPC_TLS which sits on insn boundary, now
7956 PPC_TPREL16_LO which is at low-order half-word. */
7957 rel->r_offset += d_offset;
7958 }
7959 break;
7960
7961 case R_PPC_GOT_TLSGD16_HI:
7962 case R_PPC_GOT_TLSGD16_HA:
7963 tls_gd = TLS_TPRELGD;
7964 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
7965 goto tls_gdld_hi;
7966 break;
7967
7968 case R_PPC_GOT_TLSLD16_HI:
7969 case R_PPC_GOT_TLSLD16_HA:
7970 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
7971 {
7972 tls_gdld_hi:
7973 if ((tls_mask & tls_gd) != 0)
7974 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
7975 + R_PPC_GOT_TPREL16);
7976 else
7977 {
7978 rel->r_offset -= d_offset;
7979 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
7980 r_type = R_PPC_NONE;
7981 }
7982 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7983 }
7984 break;
7985
7986 case R_PPC_GOT_TLSGD16:
7987 case R_PPC_GOT_TLSGD16_LO:
7988 tls_gd = TLS_TPRELGD;
7989 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
7990 goto tls_ldgd_opt;
7991 break;
7992
7993 case R_PPC_GOT_TLSLD16:
7994 case R_PPC_GOT_TLSLD16_LO:
7995 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
7996 {
7997 unsigned int insn1, insn2;
7998 bfd_vma offset;
7999
8000 tls_ldgd_opt:
8001 offset = (bfd_vma) -1;
8002 /* If not using the newer R_PPC_TLSGD/LD to mark
8003 __tls_get_addr calls, we must trust that the call
8004 stays with its arg setup insns, ie. that the next
8005 reloc is the __tls_get_addr call associated with
8006 the current reloc. Edit both insns. */
8007 if (input_section->has_tls_get_addr_call
8008 && rel + 1 < relend
8009 && branch_reloc_hash_match (input_bfd, rel + 1,
8010 htab->tls_get_addr))
8011 offset = rel[1].r_offset;
8012 /* We read the low GOT_TLS insn because we need to keep
8013 the destination reg. It may be something other than
8014 the usual r3, and moved to r3 before the call by
8015 intervening code. */
8016 insn1 = bfd_get_32 (output_bfd,
8017 contents + rel->r_offset - d_offset);
8018 if ((tls_mask & tls_gd) != 0)
8019 {
8020 /* IE */
8021 insn1 &= (0x1f << 21) | (0x1f << 16);
8022 insn1 |= 32 << 26; /* lwz */
8023 if (offset != (bfd_vma) -1)
8024 {
8025 rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
8026 insn2 = 0x7c631214; /* add 3,3,2 */
8027 bfd_put_32 (output_bfd, insn2, contents + offset);
8028 }
8029 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
8030 + R_PPC_GOT_TPREL16);
8031 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
8032 }
8033 else
8034 {
8035 /* LE */
8036 insn1 &= 0x1f << 21;
8037 insn1 |= 0x3c020000; /* addis r,2,0 */
8038 if (tls_gd == 0)
8039 {
8040 /* Was an LD reloc. */
8041 for (r_symndx = 0;
8042 r_symndx < symtab_hdr->sh_info;
8043 r_symndx++)
8044 if (local_sections[r_symndx] == sec)
8045 break;
8046 if (r_symndx >= symtab_hdr->sh_info)
8047 r_symndx = STN_UNDEF;
8048 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
8049 if (r_symndx != STN_UNDEF)
8050 rel->r_addend -= (local_syms[r_symndx].st_value
8051 + sec->output_offset
8052 + sec->output_section->vma);
8053 }
8054 r_type = R_PPC_TPREL16_HA;
8055 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
8056 if (offset != (bfd_vma) -1)
8057 {
8058 rel[1].r_info = ELF32_R_INFO (r_symndx, R_PPC_TPREL16_LO);
8059 rel[1].r_offset = offset + d_offset;
8060 rel[1].r_addend = rel->r_addend;
8061 insn2 = 0x38630000; /* addi 3,3,0 */
8062 bfd_put_32 (output_bfd, insn2, contents + offset);
8063 }
8064 }
8065 bfd_put_32 (output_bfd, insn1,
8066 contents + rel->r_offset - d_offset);
8067 if (tls_gd == 0)
8068 {
8069 /* We changed the symbol on an LD reloc. Start over
8070 in order to get h, sym, sec etc. right. */
8071 goto again;
8072 }
8073 }
8074 break;
8075
8076 case R_PPC_TLSGD:
8077 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
8078 {
8079 unsigned int insn2;
8080 bfd_vma offset = rel->r_offset;
8081
8082 if ((tls_mask & TLS_TPRELGD) != 0)
8083 {
8084 /* IE */
8085 r_type = R_PPC_NONE;
8086 insn2 = 0x7c631214; /* add 3,3,2 */
8087 }
8088 else
8089 {
8090 /* LE */
8091 r_type = R_PPC_TPREL16_LO;
8092 rel->r_offset += d_offset;
8093 insn2 = 0x38630000; /* addi 3,3,0 */
8094 }
8095 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
8096 bfd_put_32 (output_bfd, insn2, contents + offset);
8097 /* Zap the reloc on the _tls_get_addr call too. */
8098 BFD_ASSERT (offset == rel[1].r_offset);
8099 rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
8100 }
8101 break;
8102
8103 case R_PPC_TLSLD:
8104 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
8105 {
8106 unsigned int insn2;
8107
8108 for (r_symndx = 0;
8109 r_symndx < symtab_hdr->sh_info;
8110 r_symndx++)
8111 if (local_sections[r_symndx] == sec)
8112 break;
8113 if (r_symndx >= symtab_hdr->sh_info)
8114 r_symndx = STN_UNDEF;
8115 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
8116 if (r_symndx != STN_UNDEF)
8117 rel->r_addend -= (local_syms[r_symndx].st_value
8118 + sec->output_offset
8119 + sec->output_section->vma);
8120
8121 rel->r_info = ELF32_R_INFO (r_symndx, R_PPC_TPREL16_LO);
8122 rel->r_offset += d_offset;
8123 insn2 = 0x38630000; /* addi 3,3,0 */
8124 bfd_put_32 (output_bfd, insn2,
8125 contents + rel->r_offset - d_offset);
8126 /* Zap the reloc on the _tls_get_addr call too. */
8127 BFD_ASSERT (rel->r_offset - d_offset == rel[1].r_offset);
8128 rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
8129 goto again;
8130 }
8131 break;
8132 }
8133
8134 /* Handle other relocations that tweak non-addend part of insn. */
8135 branch_bit = 0;
8136 switch (r_type)
8137 {
8138 default:
8139 break;
8140
8141 /* Branch taken prediction relocations. */
8142 case R_PPC_ADDR14_BRTAKEN:
8143 case R_PPC_REL14_BRTAKEN:
8144 branch_bit = BRANCH_PREDICT_BIT;
8145 /* Fall thru */
8146
8147 /* Branch not taken prediction relocations. */
8148 case R_PPC_ADDR14_BRNTAKEN:
8149 case R_PPC_REL14_BRNTAKEN:
8150 {
8151 bfd_vma insn;
8152
8153 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
8154 insn &= ~BRANCH_PREDICT_BIT;
8155 insn |= branch_bit;
8156
8157 from = (rel->r_offset
8158 + input_section->output_offset
8159 + input_section->output_section->vma);
8160
8161 /* Invert 'y' bit if not the default. */
8162 if ((bfd_signed_vma) (relocation + rel->r_addend - from) < 0)
8163 insn ^= BRANCH_PREDICT_BIT;
8164
8165 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
8166 break;
8167 }
8168 }
8169
8170 if (ELIMINATE_COPY_RELOCS
8171 && h != NULL
8172 && !h->def_regular
8173 && h->protected_def
8174 && ppc_elf_hash_entry (h)->has_addr16_ha
8175 && ppc_elf_hash_entry (h)->has_addr16_lo
8176 && htab->params->pic_fixup > 0)
8177 {
8178 /* Convert lis;addi or lis;load/store accessing a protected
8179 variable defined in a shared library to PIC. */
8180 unsigned int insn;
8181
8182 if (r_type == R_PPC_ADDR16_HA)
8183 {
8184 insn = bfd_get_32 (output_bfd,
8185 contents + rel->r_offset - d_offset);
8186 if ((insn & (0x3f << 26)) == (15u << 26)
8187 && (insn & (0x1f << 16)) == 0 /* lis */)
8188 {
8189 bfd_byte *p;
8190 bfd_vma off;
8191 bfd_vma got_addr;
8192
8193 p = (contents + input_section->size
8194 - relax_info->workaround_size
8195 - relax_info->picfixup_size
8196 + picfixup_size);
8197 off = (p - contents) - (rel->r_offset - d_offset);
8198 if (off > 0x1fffffc || (off & 3) != 0)
8199 info->callbacks->einfo
8200 (_("%P: %H: fixup branch overflow\n"),
8201 input_bfd, input_section, rel->r_offset);
8202
8203 bfd_put_32 (output_bfd, B | off,
8204 contents + rel->r_offset - d_offset);
8205 got_addr = (htab->got->output_section->vma
8206 + htab->got->output_offset
8207 + (h->got.offset & ~1));
8208 wrel->r_offset = (p - contents) + d_offset;
8209 wrel->r_info = ELF32_R_INFO (0, R_PPC_ADDR16_HA);
8210 wrel->r_addend = got_addr;
8211 insn &= ~0xffff;
8212 insn |= ((unsigned int )(got_addr + 0x8000) >> 16) & 0xffff;
8213 bfd_put_32 (output_bfd, insn, p);
8214
8215 /* Convert lis to lwz, loading address from GOT. */
8216 insn &= ~0xffff;
8217 insn ^= (32u ^ 15u) << 26;
8218 insn |= (insn & (0x1f << 21)) >> 5;
8219 insn |= got_addr & 0xffff;
8220 bfd_put_32 (output_bfd, insn, p + 4);
8221
8222 bfd_put_32 (output_bfd, B | ((-4 - off) & 0x3ffffff), p + 8);
8223 picfixup_size += 12;
8224
8225 /* Use one of the spare relocs, so --emit-relocs
8226 output is reasonable. */
8227 memmove (rel + 1, rel, (relend - rel - 1) * sizeof (*rel));
8228 wrel++, rel++;
8229 rel->r_offset = wrel[-1].r_offset + 4;
8230 rel->r_info = ELF32_R_INFO (0, R_PPC_ADDR16_LO);
8231 rel->r_addend = wrel[-1].r_addend;
8232
8233 /* Continue on as if we had a got reloc, to output
8234 dynamic reloc. */
8235 r_type = R_PPC_GOT16_LO;
8236 }
8237 else
8238 info->callbacks->einfo
8239 (_("%P: %H: error: %s with unexpected instruction %x\n"),
8240 input_bfd, input_section, rel->r_offset,
8241 "R_PPC_ADDR16_HA", insn);
8242 }
8243 else if (r_type == R_PPC_ADDR16_LO)
8244 {
8245 insn = bfd_get_32 (output_bfd,
8246 contents + rel->r_offset - d_offset);
8247 if ((insn & (0x3f << 26)) == 14u << 26 /* addi */
8248 || (insn & (0x3f << 26)) == 32u << 26 /* lwz */
8249 || (insn & (0x3f << 26)) == 34u << 26 /* lbz */
8250 || (insn & (0x3f << 26)) == 36u << 26 /* stw */
8251 || (insn & (0x3f << 26)) == 38u << 26 /* stb */
8252 || (insn & (0x3f << 26)) == 40u << 26 /* lhz */
8253 || (insn & (0x3f << 26)) == 42u << 26 /* lha */
8254 || (insn & (0x3f << 26)) == 44u << 26 /* sth */
8255 || (insn & (0x3f << 26)) == 46u << 26 /* lmw */
8256 || (insn & (0x3f << 26)) == 47u << 26 /* stmw */
8257 || (insn & (0x3f << 26)) == 48u << 26 /* lfs */
8258 || (insn & (0x3f << 26)) == 50u << 26 /* lfd */
8259 || (insn & (0x3f << 26)) == 52u << 26 /* stfs */
8260 || (insn & (0x3f << 26)) == 54u << 26 /* stfd */
8261 || ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
8262 && (insn & 3) != 1)
8263 || ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */
8264 && ((insn & 3) == 0 || (insn & 3) == 3)))
8265 {
8266 /* Arrange to apply the reloc addend, if any. */
8267 relocation = 0;
8268 unresolved_reloc = FALSE;
8269 rel->r_info = ELF32_R_INFO (0, r_type);
8270 }
8271 else
8272 info->callbacks->einfo
8273 (_("%P: %H: error: %s with unexpected instruction %x\n"),
8274 input_bfd, input_section, rel->r_offset,
8275 "R_PPC_ADDR16_LO", insn);
8276 }
8277 }
8278
8279 ifunc = NULL;
8280 if (!htab->is_vxworks)
8281 {
8282 struct plt_entry *ent;
8283
8284 if (h != NULL)
8285 {
8286 if (h->type == STT_GNU_IFUNC)
8287 ifunc = &h->plt.plist;
8288 }
8289 else if (local_got_offsets != NULL
8290 && ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
8291 {
8292 struct plt_entry **local_plt;
8293
8294 local_plt = (struct plt_entry **) (local_got_offsets
8295 + symtab_hdr->sh_info);
8296 ifunc = local_plt + r_symndx;
8297 }
8298
8299 ent = NULL;
8300 if (ifunc != NULL
8301 && (!bfd_link_pic (info)
8302 || is_branch_reloc (r_type)))
8303 {
8304 addend = 0;
8305 if (r_type == R_PPC_PLTREL24 && bfd_link_pic (info))
8306 addend = rel->r_addend;
8307 ent = find_plt_ent (ifunc, got2, addend);
8308 }
8309 if (ent != NULL)
8310 {
8311 if (h == NULL && (ent->plt.offset & 1) == 0)
8312 {
8313 Elf_Internal_Rela rela;
8314 bfd_byte *loc;
8315
8316 rela.r_offset = (htab->iplt->output_section->vma
8317 + htab->iplt->output_offset
8318 + ent->plt.offset);
8319 rela.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
8320 rela.r_addend = relocation;
8321 loc = htab->reliplt->contents;
8322 loc += (htab->reliplt->reloc_count++
8323 * sizeof (Elf32_External_Rela));
8324 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
8325
8326 ent->plt.offset |= 1;
8327 }
8328 if (h == NULL && (ent->glink_offset & 1) == 0)
8329 {
8330 unsigned char *p = ((unsigned char *) htab->glink->contents
8331 + ent->glink_offset);
8332 write_glink_stub (ent, htab->iplt, p, info);
8333 ent->glink_offset |= 1;
8334 }
8335
8336 unresolved_reloc = FALSE;
8337 if (htab->plt_type == PLT_NEW
8338 || !htab->elf.dynamic_sections_created
8339 || h == NULL
8340 || h->dynindx == -1)
8341 relocation = (htab->glink->output_section->vma
8342 + htab->glink->output_offset
8343 + (ent->glink_offset & ~1));
8344 else
8345 relocation = (htab->plt->output_section->vma
8346 + htab->plt->output_offset
8347 + ent->plt.offset);
8348 }
8349 }
8350
8351 addend = rel->r_addend;
8352 tls_type = 0;
8353 howto = NULL;
8354 if (r_type < R_PPC_max)
8355 howto = ppc_elf_howto_table[r_type];
8356 switch (r_type)
8357 {
8358 default:
8359 info->callbacks->einfo
8360 (_("%P: %B: unknown relocation type %d for symbol %s\n"),
8361 input_bfd, (int) r_type, sym_name);
8362
8363 bfd_set_error (bfd_error_bad_value);
8364 ret = FALSE;
8365 goto copy_reloc;
8366
8367 case R_PPC_NONE:
8368 case R_PPC_TLS:
8369 case R_PPC_TLSGD:
8370 case R_PPC_TLSLD:
8371 case R_PPC_EMB_MRKREF:
8372 case R_PPC_GNU_VTINHERIT:
8373 case R_PPC_GNU_VTENTRY:
8374 goto copy_reloc;
8375
8376 /* GOT16 relocations. Like an ADDR16 using the symbol's
8377 address in the GOT as relocation value instead of the
8378 symbol's value itself. Also, create a GOT entry for the
8379 symbol and put the symbol value there. */
8380 case R_PPC_GOT_TLSGD16:
8381 case R_PPC_GOT_TLSGD16_LO:
8382 case R_PPC_GOT_TLSGD16_HI:
8383 case R_PPC_GOT_TLSGD16_HA:
8384 tls_type = TLS_TLS | TLS_GD;
8385 goto dogot;
8386
8387 case R_PPC_GOT_TLSLD16:
8388 case R_PPC_GOT_TLSLD16_LO:
8389 case R_PPC_GOT_TLSLD16_HI:
8390 case R_PPC_GOT_TLSLD16_HA:
8391 tls_type = TLS_TLS | TLS_LD;
8392 goto dogot;
8393
8394 case R_PPC_GOT_TPREL16:
8395 case R_PPC_GOT_TPREL16_LO:
8396 case R_PPC_GOT_TPREL16_HI:
8397 case R_PPC_GOT_TPREL16_HA:
8398 tls_type = TLS_TLS | TLS_TPREL;
8399 goto dogot;
8400
8401 case R_PPC_GOT_DTPREL16:
8402 case R_PPC_GOT_DTPREL16_LO:
8403 case R_PPC_GOT_DTPREL16_HI:
8404 case R_PPC_GOT_DTPREL16_HA:
8405 tls_type = TLS_TLS | TLS_DTPREL;
8406 goto dogot;
8407
8408 case R_PPC_GOT16:
8409 case R_PPC_GOT16_LO:
8410 case R_PPC_GOT16_HI:
8411 case R_PPC_GOT16_HA:
8412 tls_mask = 0;
8413 dogot:
8414 {
8415 /* Relocation is to the entry for this symbol in the global
8416 offset table. */
8417 bfd_vma off;
8418 bfd_vma *offp;
8419 unsigned long indx;
8420
8421 if (htab->got == NULL)
8422 abort ();
8423
8424 indx = 0;
8425 if (tls_type == (TLS_TLS | TLS_LD)
8426 && (h == NULL
8427 || !h->def_dynamic))
8428 offp = &htab->tlsld_got.offset;
8429 else if (h != NULL)
8430 {
8431 bfd_boolean dyn;
8432 dyn = htab->elf.dynamic_sections_created;
8433 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, bfd_link_pic (info), h)
8434 || (bfd_link_pic (info)
8435 && SYMBOL_REFERENCES_LOCAL (info, h)))
8436 /* This is actually a static link, or it is a
8437 -Bsymbolic link and the symbol is defined
8438 locally, or the symbol was forced to be local
8439 because of a version file. */
8440 ;
8441 else
8442 {
8443 BFD_ASSERT (h->dynindx != -1);
8444 indx = h->dynindx;
8445 unresolved_reloc = FALSE;
8446 }
8447 offp = &h->got.offset;
8448 }
8449 else
8450 {
8451 if (local_got_offsets == NULL)
8452 abort ();
8453 offp = &local_got_offsets[r_symndx];
8454 }
8455
8456 /* The offset must always be a multiple of 4. We use the
8457 least significant bit to record whether we have already
8458 processed this entry. */
8459 off = *offp;
8460 if ((off & 1) != 0)
8461 off &= ~1;
8462 else
8463 {
8464 unsigned int tls_m = (tls_mask
8465 & (TLS_LD | TLS_GD | TLS_DTPREL
8466 | TLS_TPREL | TLS_TPRELGD));
8467
8468 if (offp == &htab->tlsld_got.offset)
8469 tls_m = TLS_LD;
8470 else if (h == NULL
8471 || !h->def_dynamic)
8472 tls_m &= ~TLS_LD;
8473
8474 /* We might have multiple got entries for this sym.
8475 Initialize them all. */
8476 do
8477 {
8478 int tls_ty = 0;
8479
8480 if ((tls_m & TLS_LD) != 0)
8481 {
8482 tls_ty = TLS_TLS | TLS_LD;
8483 tls_m &= ~TLS_LD;
8484 }
8485 else if ((tls_m & TLS_GD) != 0)
8486 {
8487 tls_ty = TLS_TLS | TLS_GD;
8488 tls_m &= ~TLS_GD;
8489 }
8490 else if ((tls_m & TLS_DTPREL) != 0)
8491 {
8492 tls_ty = TLS_TLS | TLS_DTPREL;
8493 tls_m &= ~TLS_DTPREL;
8494 }
8495 else if ((tls_m & (TLS_TPREL | TLS_TPRELGD)) != 0)
8496 {
8497 tls_ty = TLS_TLS | TLS_TPREL;
8498 tls_m = 0;
8499 }
8500
8501 /* Generate relocs for the dynamic linker. */
8502 if ((bfd_link_pic (info) || indx != 0)
8503 && (offp == &htab->tlsld_got.offset
8504 || h == NULL
8505 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
8506 || h->root.type != bfd_link_hash_undefweak))
8507 {
8508 asection *rsec = htab->relgot;
8509 bfd_byte * loc;
8510
8511 if (ifunc != NULL)
8512 rsec = htab->reliplt;
8513 outrel.r_offset = (htab->got->output_section->vma
8514 + htab->got->output_offset
8515 + off);
8516 outrel.r_addend = 0;
8517 if (tls_ty & (TLS_LD | TLS_GD))
8518 {
8519 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPMOD32);
8520 if (tls_ty == (TLS_TLS | TLS_GD))
8521 {
8522 loc = rsec->contents;
8523 loc += (rsec->reloc_count++
8524 * sizeof (Elf32_External_Rela));
8525 bfd_elf32_swap_reloca_out (output_bfd,
8526 &outrel, loc);
8527 outrel.r_offset += 4;
8528 outrel.r_info
8529 = ELF32_R_INFO (indx, R_PPC_DTPREL32);
8530 }
8531 }
8532 else if (tls_ty == (TLS_TLS | TLS_DTPREL))
8533 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPREL32);
8534 else if (tls_ty == (TLS_TLS | TLS_TPREL))
8535 outrel.r_info = ELF32_R_INFO (indx, R_PPC_TPREL32);
8536 else if (indx != 0)
8537 outrel.r_info = ELF32_R_INFO (indx, R_PPC_GLOB_DAT);
8538 else if (ifunc != NULL)
8539 outrel.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
8540 else
8541 outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
8542 if (indx == 0 && tls_ty != (TLS_TLS | TLS_LD))
8543 {
8544 outrel.r_addend += relocation;
8545 if (tls_ty & (TLS_GD | TLS_DTPREL | TLS_TPREL))
8546 {
8547 if (htab->elf.tls_sec == NULL)
8548 outrel.r_addend = 0;
8549 else
8550 outrel.r_addend -= htab->elf.tls_sec->vma;
8551 }
8552 }
8553 loc = rsec->contents;
8554 loc += (rsec->reloc_count++
8555 * sizeof (Elf32_External_Rela));
8556 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
8557 }
8558
8559 /* Init the .got section contents if we're not
8560 emitting a reloc. */
8561 else
8562 {
8563 bfd_vma value = relocation;
8564
8565 if (tls_ty == (TLS_TLS | TLS_LD))
8566 value = 1;
8567 else if (tls_ty != 0)
8568 {
8569 if (htab->elf.tls_sec == NULL)
8570 value = 0;
8571 else
8572 {
8573 value -= htab->elf.tls_sec->vma + DTP_OFFSET;
8574 if (tls_ty == (TLS_TLS | TLS_TPREL))
8575 value += DTP_OFFSET - TP_OFFSET;
8576 }
8577
8578 if (tls_ty == (TLS_TLS | TLS_GD))
8579 {
8580 bfd_put_32 (output_bfd, value,
8581 htab->got->contents + off + 4);
8582 value = 1;
8583 }
8584 }
8585 bfd_put_32 (output_bfd, value,
8586 htab->got->contents + off);
8587 }
8588
8589 off += 4;
8590 if (tls_ty & (TLS_LD | TLS_GD))
8591 off += 4;
8592 }
8593 while (tls_m != 0);
8594
8595 off = *offp;
8596 *offp = off | 1;
8597 }
8598
8599 if (off >= (bfd_vma) -2)
8600 abort ();
8601
8602 if ((tls_type & TLS_TLS) != 0)
8603 {
8604 if (tls_type != (TLS_TLS | TLS_LD))
8605 {
8606 if ((tls_mask & TLS_LD) != 0
8607 && !(h == NULL
8608 || !h->def_dynamic))
8609 off += 8;
8610 if (tls_type != (TLS_TLS | TLS_GD))
8611 {
8612 if ((tls_mask & TLS_GD) != 0)
8613 off += 8;
8614 if (tls_type != (TLS_TLS | TLS_DTPREL))
8615 {
8616 if ((tls_mask & TLS_DTPREL) != 0)
8617 off += 4;
8618 }
8619 }
8620 }
8621 }
8622
8623 /* If here for a picfixup, we're done. */
8624 if (r_type != ELF32_R_TYPE (rel->r_info))
8625 goto copy_reloc;
8626
8627 relocation = (htab->got->output_section->vma
8628 + htab->got->output_offset
8629 + off
8630 - SYM_VAL (htab->elf.hgot));
8631
8632 /* Addends on got relocations don't make much sense.
8633 x+off@got is actually x@got+off, and since the got is
8634 generated by a hash table traversal, the value in the
8635 got at entry m+n bears little relation to the entry m. */
8636 if (addend != 0)
8637 info->callbacks->einfo
8638 (_("%P: %H: non-zero addend on %s reloc against `%s'\n"),
8639 input_bfd, input_section, rel->r_offset,
8640 howto->name,
8641 sym_name);
8642 }
8643 break;
8644
8645 /* Relocations that need no special processing. */
8646 case R_PPC_LOCAL24PC:
8647 /* It makes no sense to point a local relocation
8648 at a symbol not in this object. */
8649 if (unresolved_reloc)
8650 {
8651 (*info->callbacks->undefined_symbol) (info,
8652 h->root.root.string,
8653 input_bfd,
8654 input_section,
8655 rel->r_offset,
8656 TRUE);
8657 goto copy_reloc;
8658 }
8659 break;
8660
8661 case R_PPC_DTPREL16:
8662 case R_PPC_DTPREL16_LO:
8663 case R_PPC_DTPREL16_HI:
8664 case R_PPC_DTPREL16_HA:
8665 if (htab->elf.tls_sec != NULL)
8666 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
8667 break;
8668
8669 /* Relocations that may need to be propagated if this is a shared
8670 object. */
8671 case R_PPC_TPREL16:
8672 case R_PPC_TPREL16_LO:
8673 case R_PPC_TPREL16_HI:
8674 case R_PPC_TPREL16_HA:
8675 if (h != NULL
8676 && h->root.type == bfd_link_hash_undefweak
8677 && h->dynindx == -1)
8678 {
8679 /* Make this relocation against an undefined weak symbol
8680 resolve to zero. This is really just a tweak, since
8681 code using weak externs ought to check that they are
8682 defined before using them. */
8683 bfd_byte *p = contents + rel->r_offset - d_offset;
8684 unsigned int insn = bfd_get_32 (output_bfd, p);
8685 insn = _bfd_elf_ppc_at_tprel_transform (insn, 2);
8686 if (insn != 0)
8687 bfd_put_32 (output_bfd, insn, p);
8688 break;
8689 }
8690 if (htab->elf.tls_sec != NULL)
8691 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
8692 /* The TPREL16 relocs shouldn't really be used in shared
8693 libs as they will result in DT_TEXTREL being set, but
8694 support them anyway. */
8695 goto dodyn;
8696
8697 case R_PPC_TPREL32:
8698 if (htab->elf.tls_sec != NULL)
8699 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
8700 goto dodyn;
8701
8702 case R_PPC_DTPREL32:
8703 if (htab->elf.tls_sec != NULL)
8704 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
8705 goto dodyn;
8706
8707 case R_PPC_DTPMOD32:
8708 relocation = 1;
8709 addend = 0;
8710 goto dodyn;
8711
8712 case R_PPC_REL16:
8713 case R_PPC_REL16_LO:
8714 case R_PPC_REL16_HI:
8715 case R_PPC_REL16_HA:
8716 case R_PPC_REL16DX_HA:
8717 break;
8718
8719 case R_PPC_REL32:
8720 if (h == NULL || h == htab->elf.hgot)
8721 break;
8722 /* fall through */
8723
8724 case R_PPC_ADDR32:
8725 case R_PPC_ADDR16:
8726 case R_PPC_ADDR16_LO:
8727 case R_PPC_ADDR16_HI:
8728 case R_PPC_ADDR16_HA:
8729 case R_PPC_UADDR32:
8730 case R_PPC_UADDR16:
8731 goto dodyn;
8732
8733 case R_PPC_VLE_REL8:
8734 case R_PPC_VLE_REL15:
8735 case R_PPC_VLE_REL24:
8736 case R_PPC_REL24:
8737 case R_PPC_REL14:
8738 case R_PPC_REL14_BRTAKEN:
8739 case R_PPC_REL14_BRNTAKEN:
8740 /* If these relocations are not to a named symbol, they can be
8741 handled right here, no need to bother the dynamic linker. */
8742 if (SYMBOL_CALLS_LOCAL (info, h)
8743 || h == htab->elf.hgot)
8744 break;
8745 /* fall through */
8746
8747 case R_PPC_ADDR24:
8748 case R_PPC_ADDR14:
8749 case R_PPC_ADDR14_BRTAKEN:
8750 case R_PPC_ADDR14_BRNTAKEN:
8751 if (h != NULL && !bfd_link_pic (info))
8752 break;
8753 /* fall through */
8754
8755 dodyn:
8756 if ((input_section->flags & SEC_ALLOC) == 0
8757 || is_vxworks_tls)
8758 break;
8759
8760 if ((bfd_link_pic (info)
8761 && !(h != NULL
8762 && ((h->root.type == bfd_link_hash_undefined
8763 && (ELF_ST_VISIBILITY (h->other) == STV_HIDDEN
8764 || ELF_ST_VISIBILITY (h->other) == STV_INTERNAL))
8765 || (h->root.type == bfd_link_hash_undefweak
8766 && ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)))
8767 && (must_be_dyn_reloc (info, r_type)
8768 || !SYMBOL_CALLS_LOCAL (info, h)))
8769 || (ELIMINATE_COPY_RELOCS
8770 && !bfd_link_pic (info)
8771 && h != NULL
8772 && h->dynindx != -1
8773 && !h->non_got_ref
8774 && !h->def_regular
8775 && !(h->protected_def
8776 && ppc_elf_hash_entry (h)->has_addr16_ha
8777 && ppc_elf_hash_entry (h)->has_addr16_lo
8778 && htab->params->pic_fixup > 0)))
8779 {
8780 int skip;
8781 bfd_byte *loc;
8782 asection *sreloc;
8783 #ifdef DEBUG
8784 fprintf (stderr, "ppc_elf_relocate_section needs to "
8785 "create relocation for %s\n",
8786 (h && h->root.root.string
8787 ? h->root.root.string : "<unknown>"));
8788 #endif
8789
8790 /* When generating a shared object, these relocations
8791 are copied into the output file to be resolved at run
8792 time. */
8793 sreloc = elf_section_data (input_section)->sreloc;
8794 if (ifunc)
8795 sreloc = htab->reliplt;
8796 if (sreloc == NULL)
8797 return FALSE;
8798
8799 skip = 0;
8800 outrel.r_offset = _bfd_elf_section_offset (output_bfd, info,
8801 input_section,
8802 rel->r_offset);
8803 if (outrel.r_offset == (bfd_vma) -1
8804 || outrel.r_offset == (bfd_vma) -2)
8805 skip = (int) outrel.r_offset;
8806 outrel.r_offset += (input_section->output_section->vma
8807 + input_section->output_offset);
8808
8809 if (skip)
8810 memset (&outrel, 0, sizeof outrel);
8811 else if ((h != NULL
8812 && (h->root.type == bfd_link_hash_undefined
8813 || h->root.type == bfd_link_hash_undefweak))
8814 || !SYMBOL_REFERENCES_LOCAL (info, h))
8815 {
8816 BFD_ASSERT (h->dynindx != -1);
8817 unresolved_reloc = FALSE;
8818 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
8819 outrel.r_addend = rel->r_addend;
8820 }
8821 else
8822 {
8823 outrel.r_addend = relocation + rel->r_addend;
8824
8825 if (r_type != R_PPC_ADDR32)
8826 {
8827 long indx = 0;
8828
8829 if (ifunc != NULL)
8830 {
8831 /* If we get here when building a static
8832 executable, then the libc startup function
8833 responsible for applying indirect function
8834 relocations is going to complain about
8835 the reloc type.
8836 If we get here when building a dynamic
8837 executable, it will be because we have
8838 a text relocation. The dynamic loader
8839 will set the text segment writable and
8840 non-executable to apply text relocations.
8841 So we'll segfault when trying to run the
8842 indirection function to resolve the reloc. */
8843 info->callbacks->einfo
8844 (_("%P: %H: relocation %s for indirect "
8845 "function %s unsupported\n"),
8846 input_bfd, input_section, rel->r_offset,
8847 howto->name,
8848 sym_name);
8849 ret = FALSE;
8850 }
8851 else if (r_symndx == STN_UNDEF || bfd_is_abs_section (sec))
8852 ;
8853 else if (sec == NULL || sec->owner == NULL)
8854 {
8855 bfd_set_error (bfd_error_bad_value);
8856 ret = FALSE;
8857 }
8858 else
8859 {
8860 asection *osec;
8861
8862 /* We are turning this relocation into one
8863 against a section symbol. It would be
8864 proper to subtract the symbol's value,
8865 osec->vma, from the emitted reloc addend,
8866 but ld.so expects buggy relocs.
8867 FIXME: Why not always use a zero index? */
8868 osec = sec->output_section;
8869 indx = elf_section_data (osec)->dynindx;
8870 if (indx == 0)
8871 {
8872 osec = htab->elf.text_index_section;
8873 indx = elf_section_data (osec)->dynindx;
8874 }
8875 BFD_ASSERT (indx != 0);
8876 #ifdef DEBUG
8877 if (indx == 0)
8878 printf ("indx=%ld section=%s flags=%08x name=%s\n",
8879 indx, osec->name, osec->flags,
8880 h->root.root.string);
8881 #endif
8882 }
8883
8884 outrel.r_info = ELF32_R_INFO (indx, r_type);
8885 }
8886 else if (ifunc != NULL)
8887 outrel.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
8888 else
8889 outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
8890 }
8891
8892 loc = sreloc->contents;
8893 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
8894 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
8895
8896 if (skip == -1)
8897 goto copy_reloc;
8898
8899 /* This reloc will be computed at runtime. We clear the memory
8900 so that it contains predictable value. */
8901 if (! skip
8902 && ((input_section->flags & SEC_ALLOC) != 0
8903 || ELF32_R_TYPE (outrel.r_info) != R_PPC_RELATIVE))
8904 {
8905 relocation = howto->pc_relative ? outrel.r_offset : 0;
8906 addend = 0;
8907 break;
8908 }
8909 }
8910 break;
8911
8912 case R_PPC_RELAX_PLT:
8913 case R_PPC_RELAX_PLTREL24:
8914 if (h != NULL)
8915 {
8916 struct plt_entry *ent;
8917 bfd_vma got2_addend = 0;
8918
8919 if (r_type == R_PPC_RELAX_PLTREL24)
8920 {
8921 if (bfd_link_pic (info))
8922 got2_addend = addend;
8923 addend = 0;
8924 }
8925 ent = find_plt_ent (&h->plt.plist, got2, got2_addend);
8926 if (htab->plt_type == PLT_NEW)
8927 relocation = (htab->glink->output_section->vma
8928 + htab->glink->output_offset
8929 + ent->glink_offset);
8930 else
8931 relocation = (htab->plt->output_section->vma
8932 + htab->plt->output_offset
8933 + ent->plt.offset);
8934 }
8935 /* Fall thru */
8936
8937 case R_PPC_RELAX:
8938 {
8939 const int *stub;
8940 size_t size;
8941 size_t insn_offset = rel->r_offset;
8942 unsigned int insn;
8943
8944 if (bfd_link_pic (info))
8945 {
8946 relocation -= (input_section->output_section->vma
8947 + input_section->output_offset
8948 + rel->r_offset - 4);
8949 stub = shared_stub_entry;
8950 bfd_put_32 (output_bfd, stub[0], contents + insn_offset - 12);
8951 bfd_put_32 (output_bfd, stub[1], contents + insn_offset - 8);
8952 bfd_put_32 (output_bfd, stub[2], contents + insn_offset - 4);
8953 stub += 3;
8954 size = ARRAY_SIZE (shared_stub_entry) - 3;
8955 }
8956 else
8957 {
8958 stub = stub_entry;
8959 size = ARRAY_SIZE (stub_entry);
8960 }
8961
8962 relocation += addend;
8963 if (bfd_link_relocatable (info))
8964 relocation = 0;
8965
8966 /* First insn is HA, second is LO. */
8967 insn = *stub++;
8968 insn |= ((relocation + 0x8000) >> 16) & 0xffff;
8969 bfd_put_32 (output_bfd, insn, contents + insn_offset);
8970 insn_offset += 4;
8971
8972 insn = *stub++;
8973 insn |= relocation & 0xffff;
8974 bfd_put_32 (output_bfd, insn, contents + insn_offset);
8975 insn_offset += 4;
8976 size -= 2;
8977
8978 while (size != 0)
8979 {
8980 insn = *stub++;
8981 --size;
8982 bfd_put_32 (output_bfd, insn, contents + insn_offset);
8983 insn_offset += 4;
8984 }
8985
8986 /* Rewrite the reloc and convert one of the trailing nop
8987 relocs to describe this relocation. */
8988 BFD_ASSERT (ELF32_R_TYPE (relend[-1].r_info) == R_PPC_NONE);
8989 /* The relocs are at the bottom 2 bytes */
8990 wrel->r_offset = rel->r_offset + d_offset;
8991 wrel->r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_HA);
8992 wrel->r_addend = rel->r_addend;
8993 memmove (wrel + 1, wrel, (relend - wrel - 1) * sizeof (*wrel));
8994 wrel++, rel++;
8995 wrel->r_offset += 4;
8996 wrel->r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_LO);
8997 }
8998 continue;
8999
9000 /* Indirect .sdata relocation. */
9001 case R_PPC_EMB_SDAI16:
9002 BFD_ASSERT (htab->sdata[0].section != NULL);
9003 if (!is_static_defined (htab->sdata[0].sym))
9004 {
9005 unresolved_reloc = TRUE;
9006 break;
9007 }
9008 relocation
9009 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[0],
9010 h, relocation, rel);
9011 addend = 0;
9012 break;
9013
9014 /* Indirect .sdata2 relocation. */
9015 case R_PPC_EMB_SDA2I16:
9016 BFD_ASSERT (htab->sdata[1].section != NULL);
9017 if (!is_static_defined (htab->sdata[1].sym))
9018 {
9019 unresolved_reloc = TRUE;
9020 break;
9021 }
9022 relocation
9023 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[1],
9024 h, relocation, rel);
9025 addend = 0;
9026 break;
9027
9028 /* Handle the TOC16 reloc. We want to use the offset within the .got
9029 section, not the actual VMA. This is appropriate when generating
9030 an embedded ELF object, for which the .got section acts like the
9031 AIX .toc section. */
9032 case R_PPC_TOC16: /* phony GOT16 relocations */
9033 if (sec == NULL || sec->output_section == NULL)
9034 {
9035 unresolved_reloc = TRUE;
9036 break;
9037 }
9038 BFD_ASSERT (strcmp (bfd_get_section_name (sec->owner, sec),
9039 ".got") == 0
9040 || strcmp (bfd_get_section_name (sec->owner, sec),
9041 ".cgot") == 0);
9042
9043 addend -= sec->output_section->vma + sec->output_offset + 0x8000;
9044 break;
9045
9046 case R_PPC_PLTREL24:
9047 if (h != NULL && ifunc == NULL)
9048 {
9049 struct plt_entry *ent;
9050
9051 ent = find_plt_ent (&h->plt.plist, got2,
9052 bfd_link_pic (info) ? addend : 0);
9053 if (ent == NULL
9054 || htab->plt == NULL)
9055 {
9056 /* We didn't make a PLT entry for this symbol. This
9057 happens when statically linking PIC code, or when
9058 using -Bsymbolic. */
9059 }
9060 else
9061 {
9062 /* Relocation is to the entry for this symbol in the
9063 procedure linkage table. */
9064 unresolved_reloc = FALSE;
9065 if (htab->plt_type == PLT_NEW)
9066 relocation = (htab->glink->output_section->vma
9067 + htab->glink->output_offset
9068 + ent->glink_offset);
9069 else
9070 relocation = (htab->plt->output_section->vma
9071 + htab->plt->output_offset
9072 + ent->plt.offset);
9073 }
9074 }
9075
9076 /* R_PPC_PLTREL24 is rather special. If non-zero, the
9077 addend specifies the GOT pointer offset within .got2.
9078 Don't apply it to the relocation field. */
9079 addend = 0;
9080 break;
9081
9082 /* Relocate against _SDA_BASE_. */
9083 case R_PPC_SDAREL16:
9084 {
9085 const char *name;
9086 struct elf_link_hash_entry *sda = htab->sdata[0].sym;
9087
9088 if (sec == NULL
9089 || sec->output_section == NULL
9090 || !is_static_defined (sda))
9091 {
9092 unresolved_reloc = TRUE;
9093 break;
9094 }
9095 addend -= SYM_VAL (sda);
9096
9097 name = bfd_get_section_name (output_bfd, sec->output_section);
9098 if (!(strcmp (name, ".sdata") == 0
9099 || strcmp (name, ".sbss") == 0))
9100 {
9101 info->callbacks->einfo
9102 (_("%P: %B: the target (%s) of a %s relocation is "
9103 "in the wrong output section (%s)\n"),
9104 input_bfd,
9105 sym_name,
9106 howto->name,
9107 name);
9108 }
9109 }
9110 break;
9111
9112 /* Relocate against _SDA2_BASE_. */
9113 case R_PPC_EMB_SDA2REL:
9114 {
9115 const char *name;
9116 struct elf_link_hash_entry *sda = htab->sdata[1].sym;
9117
9118 if (sec == NULL
9119 || sec->output_section == NULL
9120 || !is_static_defined (sda))
9121 {
9122 unresolved_reloc = TRUE;
9123 break;
9124 }
9125 addend -= SYM_VAL (sda);
9126
9127 name = bfd_get_section_name (output_bfd, sec->output_section);
9128 if (!(strcmp (name, ".sdata2") == 0
9129 || strcmp (name, ".sbss2") == 0))
9130 {
9131 info->callbacks->einfo
9132 (_("%P: %B: the target (%s) of a %s relocation is "
9133 "in the wrong output section (%s)\n"),
9134 input_bfd,
9135 sym_name,
9136 howto->name,
9137 name);
9138 }
9139 }
9140 break;
9141
9142 case R_PPC_VLE_LO16A:
9143 relocation = relocation + addend;
9144 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9145 relocation, split16a_type);
9146 goto copy_reloc;
9147
9148 case R_PPC_VLE_LO16D:
9149 relocation = relocation + addend;
9150 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9151 relocation, split16d_type);
9152 goto copy_reloc;
9153
9154 case R_PPC_VLE_HI16A:
9155 relocation = (relocation + addend) >> 16;
9156 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9157 relocation, split16a_type);
9158 goto copy_reloc;
9159
9160 case R_PPC_VLE_HI16D:
9161 relocation = (relocation + addend) >> 16;
9162 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9163 relocation, split16d_type);
9164 goto copy_reloc;
9165
9166 case R_PPC_VLE_HA16A:
9167 relocation = (relocation + addend + 0x8000) >> 16;
9168 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9169 relocation, split16a_type);
9170 goto copy_reloc;
9171
9172 case R_PPC_VLE_HA16D:
9173 relocation = (relocation + addend + 0x8000) >> 16;
9174 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9175 relocation, split16d_type);
9176 goto copy_reloc;
9177
9178 /* Relocate against either _SDA_BASE_, _SDA2_BASE_, or 0. */
9179 case R_PPC_EMB_SDA21:
9180 case R_PPC_VLE_SDA21:
9181 case R_PPC_EMB_RELSDA:
9182 case R_PPC_VLE_SDA21_LO:
9183 {
9184 const char *name;
9185 int reg;
9186 unsigned int insn;
9187 struct elf_link_hash_entry *sda = NULL;
9188
9189 if (sec == NULL || sec->output_section == NULL)
9190 {
9191 unresolved_reloc = TRUE;
9192 break;
9193 }
9194
9195 name = bfd_get_section_name (output_bfd, sec->output_section);
9196 if (strcmp (name, ".sdata") == 0
9197 || strcmp (name, ".sbss") == 0)
9198 {
9199 reg = 13;
9200 sda = htab->sdata[0].sym;
9201 }
9202 else if (strcmp (name, ".sdata2") == 0
9203 || strcmp (name, ".sbss2") == 0)
9204 {
9205 reg = 2;
9206 sda = htab->sdata[1].sym;
9207 }
9208 else if (strcmp (name, ".PPC.EMB.sdata0") == 0
9209 || strcmp (name, ".PPC.EMB.sbss0") == 0)
9210 {
9211 reg = 0;
9212 }
9213 else
9214 {
9215 info->callbacks->einfo
9216 (_("%P: %B: the target (%s) of a %s relocation is "
9217 "in the wrong output section (%s)\n"),
9218 input_bfd,
9219 sym_name,
9220 howto->name,
9221 name);
9222
9223 bfd_set_error (bfd_error_bad_value);
9224 ret = FALSE;
9225 goto copy_reloc;
9226 }
9227
9228 if (sda != NULL)
9229 {
9230 if (!is_static_defined (sda))
9231 {
9232 unresolved_reloc = TRUE;
9233 break;
9234 }
9235 addend -= SYM_VAL (sda);
9236 }
9237
9238 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
9239 if (reg == 0
9240 && (r_type == R_PPC_VLE_SDA21
9241 || r_type == R_PPC_VLE_SDA21_LO))
9242 {
9243 relocation = relocation + addend;
9244 addend = 0;
9245
9246 /* Force e_li insn, keeping RT from original insn. */
9247 insn &= 0x1f << 21;
9248 insn |= 28u << 26;
9249
9250 /* We have an li20 field, bits 17..20, 11..15, 21..31. */
9251 /* Top 4 bits of value to 17..20. */
9252 insn |= (relocation & 0xf0000) >> 5;
9253 /* Next 5 bits of the value to 11..15. */
9254 insn |= (relocation & 0xf800) << 5;
9255 /* And the final 11 bits of the value to bits 21 to 31. */
9256 insn |= relocation & 0x7ff;
9257
9258 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
9259
9260 if (r_type == R_PPC_VLE_SDA21
9261 && ((relocation + 0x80000) & 0xffffffff) > 0x100000)
9262 goto overflow;
9263 goto copy_reloc;
9264 }
9265 else if (r_type == R_PPC_EMB_SDA21
9266 || r_type == R_PPC_VLE_SDA21
9267 || r_type == R_PPC_VLE_SDA21_LO)
9268 {
9269 /* Fill in register field. */
9270 insn = (insn & ~RA_REGISTER_MASK) | (reg << RA_REGISTER_SHIFT);
9271 }
9272 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
9273 }
9274 break;
9275
9276 case R_PPC_VLE_SDAREL_LO16A:
9277 case R_PPC_VLE_SDAREL_LO16D:
9278 case R_PPC_VLE_SDAREL_HI16A:
9279 case R_PPC_VLE_SDAREL_HI16D:
9280 case R_PPC_VLE_SDAREL_HA16A:
9281 case R_PPC_VLE_SDAREL_HA16D:
9282 {
9283 bfd_vma value;
9284 const char *name;
9285 //int reg;
9286 struct elf_link_hash_entry *sda = NULL;
9287
9288 if (sec == NULL || sec->output_section == NULL)
9289 {
9290 unresolved_reloc = TRUE;
9291 break;
9292 }
9293
9294 name = bfd_get_section_name (output_bfd, sec->output_section);
9295 if (strcmp (name, ".sdata") == 0
9296 || strcmp (name, ".sbss") == 0)
9297 {
9298 //reg = 13;
9299 sda = htab->sdata[0].sym;
9300 }
9301 else if (strcmp (name, ".sdata2") == 0
9302 || strcmp (name, ".sbss2") == 0)
9303 {
9304 //reg = 2;
9305 sda = htab->sdata[1].sym;
9306 }
9307 else
9308 {
9309 (*_bfd_error_handler)
9310 (_("%B: the target (%s) of a %s relocation is "
9311 "in the wrong output section (%s)"),
9312 input_bfd,
9313 sym_name,
9314 howto->name,
9315 name);
9316
9317 bfd_set_error (bfd_error_bad_value);
9318 ret = FALSE;
9319 goto copy_reloc;
9320 }
9321
9322 if (sda != NULL)
9323 {
9324 if (!is_static_defined (sda))
9325 {
9326 unresolved_reloc = TRUE;
9327 break;
9328 }
9329 }
9330
9331 value = (sda->root.u.def.section->output_section->vma
9332 + sda->root.u.def.section->output_offset
9333 + addend);
9334
9335 if (r_type == R_PPC_VLE_SDAREL_LO16A)
9336 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9337 value, split16a_type);
9338 else if (r_type == R_PPC_VLE_SDAREL_LO16D)
9339 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9340 value, split16d_type);
9341 else if (r_type == R_PPC_VLE_SDAREL_HI16A)
9342 {
9343 value = value >> 16;
9344 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9345 value, split16a_type);
9346 }
9347 else if (r_type == R_PPC_VLE_SDAREL_HI16D)
9348 {
9349 value = value >> 16;
9350 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9351 value, split16d_type);
9352 }
9353 else if (r_type == R_PPC_VLE_SDAREL_HA16A)
9354 {
9355 value = (value + 0x8000) >> 16;
9356 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9357 value, split16a_type);
9358 }
9359 else if (r_type == R_PPC_VLE_SDAREL_HA16D)
9360 {
9361 value = (value + 0x8000) >> 16;
9362 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9363 value, split16d_type);
9364 }
9365 }
9366 goto copy_reloc;
9367
9368 /* Relocate against the beginning of the section. */
9369 case R_PPC_SECTOFF:
9370 case R_PPC_SECTOFF_LO:
9371 case R_PPC_SECTOFF_HI:
9372 case R_PPC_SECTOFF_HA:
9373 if (sec == NULL || sec->output_section == NULL)
9374 {
9375 unresolved_reloc = TRUE;
9376 break;
9377 }
9378 addend -= sec->output_section->vma;
9379 break;
9380
9381 /* Negative relocations. */
9382 case R_PPC_EMB_NADDR32:
9383 case R_PPC_EMB_NADDR16:
9384 case R_PPC_EMB_NADDR16_LO:
9385 case R_PPC_EMB_NADDR16_HI:
9386 case R_PPC_EMB_NADDR16_HA:
9387 addend -= 2 * relocation;
9388 break;
9389
9390 case R_PPC_COPY:
9391 case R_PPC_GLOB_DAT:
9392 case R_PPC_JMP_SLOT:
9393 case R_PPC_RELATIVE:
9394 case R_PPC_IRELATIVE:
9395 case R_PPC_PLT32:
9396 case R_PPC_PLTREL32:
9397 case R_PPC_PLT16_LO:
9398 case R_PPC_PLT16_HI:
9399 case R_PPC_PLT16_HA:
9400 case R_PPC_ADDR30:
9401 case R_PPC_EMB_RELSEC16:
9402 case R_PPC_EMB_RELST_LO:
9403 case R_PPC_EMB_RELST_HI:
9404 case R_PPC_EMB_RELST_HA:
9405 case R_PPC_EMB_BIT_FLD:
9406 info->callbacks->einfo
9407 (_("%P: %B: relocation %s is not yet supported for symbol %s\n"),
9408 input_bfd,
9409 howto->name,
9410 sym_name);
9411
9412 bfd_set_error (bfd_error_invalid_operation);
9413 ret = FALSE;
9414 goto copy_reloc;
9415 }
9416
9417 /* Do any further special processing. */
9418 switch (r_type)
9419 {
9420 default:
9421 break;
9422
9423 case R_PPC_ADDR16_HA:
9424 case R_PPC_REL16_HA:
9425 case R_PPC_REL16DX_HA:
9426 case R_PPC_SECTOFF_HA:
9427 case R_PPC_TPREL16_HA:
9428 case R_PPC_DTPREL16_HA:
9429 case R_PPC_EMB_NADDR16_HA:
9430 case R_PPC_EMB_RELST_HA:
9431 /* It's just possible that this symbol is a weak symbol
9432 that's not actually defined anywhere. In that case,
9433 'sec' would be NULL, and we should leave the symbol
9434 alone (it will be set to zero elsewhere in the link). */
9435 if (sec == NULL)
9436 break;
9437 /* Fall thru */
9438
9439 case R_PPC_PLT16_HA:
9440 case R_PPC_GOT16_HA:
9441 case R_PPC_GOT_TLSGD16_HA:
9442 case R_PPC_GOT_TLSLD16_HA:
9443 case R_PPC_GOT_TPREL16_HA:
9444 case R_PPC_GOT_DTPREL16_HA:
9445 /* Add 0x10000 if sign bit in 0:15 is set.
9446 Bits 0:15 are not used. */
9447 addend += 0x8000;
9448 break;
9449
9450 case R_PPC_ADDR16:
9451 case R_PPC_ADDR16_LO:
9452 case R_PPC_GOT16:
9453 case R_PPC_GOT16_LO:
9454 case R_PPC_SDAREL16:
9455 case R_PPC_SECTOFF:
9456 case R_PPC_SECTOFF_LO:
9457 case R_PPC_DTPREL16:
9458 case R_PPC_DTPREL16_LO:
9459 case R_PPC_TPREL16:
9460 case R_PPC_TPREL16_LO:
9461 case R_PPC_GOT_TLSGD16:
9462 case R_PPC_GOT_TLSGD16_LO:
9463 case R_PPC_GOT_TLSLD16:
9464 case R_PPC_GOT_TLSLD16_LO:
9465 case R_PPC_GOT_DTPREL16:
9466 case R_PPC_GOT_DTPREL16_LO:
9467 case R_PPC_GOT_TPREL16:
9468 case R_PPC_GOT_TPREL16_LO:
9469 {
9470 /* The 32-bit ABI lacks proper relocations to deal with
9471 certain 64-bit instructions. Prevent damage to bits
9472 that make up part of the insn opcode. */
9473 unsigned int insn, mask, lobit;
9474
9475 insn = bfd_get_32 (output_bfd,
9476 contents + rel->r_offset - d_offset);
9477 mask = 0;
9478 if (is_insn_ds_form (insn))
9479 mask = 3;
9480 else if (is_insn_dq_form (insn))
9481 mask = 15;
9482 else
9483 break;
9484 relocation += addend;
9485 addend = insn & mask;
9486 lobit = mask & relocation;
9487 if (lobit != 0)
9488 {
9489 relocation ^= lobit;
9490 info->callbacks->einfo
9491 (_("%P: %H: error: %s against `%s' not a multiple of %u\n"),
9492 input_bfd, input_section, rel->r_offset,
9493 howto->name, sym_name, mask + 1);
9494 bfd_set_error (bfd_error_bad_value);
9495 ret = FALSE;
9496 }
9497 }
9498 break;
9499 }
9500
9501 #ifdef DEBUG
9502 fprintf (stderr, "\ttype = %s (%d), name = %s, symbol index = %ld, "
9503 "offset = %ld, addend = %ld\n",
9504 howto->name,
9505 (int) r_type,
9506 sym_name,
9507 r_symndx,
9508 (long) rel->r_offset,
9509 (long) addend);
9510 #endif
9511
9512 if (unresolved_reloc
9513 && !((input_section->flags & SEC_DEBUGGING) != 0
9514 && h->def_dynamic)
9515 && _bfd_elf_section_offset (output_bfd, info, input_section,
9516 rel->r_offset) != (bfd_vma) -1)
9517 {
9518 info->callbacks->einfo
9519 (_("%P: %H: unresolvable %s relocation against symbol `%s'\n"),
9520 input_bfd, input_section, rel->r_offset,
9521 howto->name,
9522 sym_name);
9523 ret = FALSE;
9524 }
9525
9526 /* 16-bit fields in insns mostly have signed values, but a
9527 few insns have 16-bit unsigned values. Really, we should
9528 have different reloc types. */
9529 if (howto->complain_on_overflow != complain_overflow_dont
9530 && howto->dst_mask == 0xffff
9531 && (input_section->flags & SEC_CODE) != 0)
9532 {
9533 enum complain_overflow complain = complain_overflow_signed;
9534
9535 if ((elf_section_flags (input_section) & SHF_PPC_VLE) == 0)
9536 {
9537 unsigned int insn;
9538
9539 insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
9540 if ((insn & (0x3f << 26)) == 10u << 26 /* cmpli */)
9541 complain = complain_overflow_bitfield;
9542 else if ((insn & (0x3f << 26)) == 28u << 26 /* andi */
9543 || (insn & (0x3f << 26)) == 24u << 26 /* ori */
9544 || (insn & (0x3f << 26)) == 26u << 26 /* xori */)
9545 complain = complain_overflow_unsigned;
9546 }
9547 if (howto->complain_on_overflow != complain)
9548 {
9549 alt_howto = *howto;
9550 alt_howto.complain_on_overflow = complain;
9551 howto = &alt_howto;
9552 }
9553 }
9554
9555 if (r_type == R_PPC_REL16DX_HA)
9556 {
9557 /* Split field reloc isn't handled by _bfd_final_link_relocate. */
9558 if (rel->r_offset + 4 > input_section->size)
9559 r = bfd_reloc_outofrange;
9560 else
9561 {
9562 unsigned int insn;
9563
9564 relocation += addend;
9565 relocation -= (rel->r_offset
9566 + input_section->output_offset
9567 + input_section->output_section->vma);
9568 relocation >>= 16;
9569 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
9570 insn &= ~0x1fffc1;
9571 insn |= (relocation & 0xffc1) | ((relocation & 0x3e) << 15);
9572 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
9573 r = bfd_reloc_ok;
9574 }
9575 }
9576 else
9577 r = _bfd_final_link_relocate (howto, input_bfd, input_section, contents,
9578 rel->r_offset, relocation, addend);
9579
9580 if (r != bfd_reloc_ok)
9581 {
9582 if (r == bfd_reloc_overflow)
9583 {
9584 overflow:
9585 /* On code like "if (foo) foo();" don't report overflow
9586 on a branch to zero when foo is undefined. */
9587 if (!warned
9588 && !(h != NULL
9589 && (h->root.type == bfd_link_hash_undefweak
9590 || h->root.type == bfd_link_hash_undefined)
9591 && is_branch_reloc (r_type)))
9592 info->callbacks->reloc_overflow
9593 (info, (h ? &h->root : NULL), sym_name, howto->name,
9594 rel->r_addend, input_bfd, input_section, rel->r_offset);
9595 }
9596 else
9597 {
9598 info->callbacks->einfo
9599 (_("%P: %H: %s reloc against `%s': error %d\n"),
9600 input_bfd, input_section, rel->r_offset,
9601 howto->name, sym_name, (int) r);
9602 ret = FALSE;
9603 }
9604 }
9605 copy_reloc:
9606 if (wrel != rel)
9607 *wrel = *rel;
9608 }
9609
9610 if (wrel != rel)
9611 {
9612 Elf_Internal_Shdr *rel_hdr;
9613 size_t deleted = rel - wrel;
9614
9615 rel_hdr = _bfd_elf_single_rel_hdr (input_section->output_section);
9616 rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted;
9617 if (rel_hdr->sh_size == 0)
9618 {
9619 /* It is too late to remove an empty reloc section. Leave
9620 one NONE reloc.
9621 ??? What is wrong with an empty section??? */
9622 rel_hdr->sh_size = rel_hdr->sh_entsize;
9623 deleted -= 1;
9624 wrel++;
9625 }
9626 relend = wrel;
9627 rel_hdr = _bfd_elf_single_rel_hdr (input_section);
9628 rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted;
9629 input_section->reloc_count -= deleted;
9630 }
9631
9632 #ifdef DEBUG
9633 fprintf (stderr, "\n");
9634 #endif
9635
9636 if (input_section->sec_info_type == SEC_INFO_TYPE_TARGET
9637 && input_section->size != input_section->rawsize
9638 && (strcmp (input_section->output_section->name, ".init") == 0
9639 || strcmp (input_section->output_section->name, ".fini") == 0))
9640 {
9641 /* Branch around the trampolines. */
9642 unsigned int insn = B + input_section->size - input_section->rawsize;
9643 bfd_put_32 (input_bfd, insn, contents + input_section->rawsize);
9644 }
9645
9646 if (htab->params->ppc476_workaround
9647 && input_section->sec_info_type == SEC_INFO_TYPE_TARGET
9648 && (!bfd_link_relocatable (info)
9649 || (input_section->output_section->alignment_power
9650 >= htab->params->pagesize_p2)))
9651 {
9652 bfd_vma start_addr, end_addr, addr;
9653 bfd_vma pagesize = (bfd_vma) 1 << htab->params->pagesize_p2;
9654
9655 if (relax_info->workaround_size != 0)
9656 {
9657 bfd_byte *p;
9658 unsigned int n;
9659 bfd_byte fill[4];
9660
9661 bfd_put_32 (input_bfd, BA, fill);
9662 p = contents + input_section->size - relax_info->workaround_size;
9663 n = relax_info->workaround_size >> 2;
9664 while (n--)
9665 {
9666 memcpy (p, fill, 4);
9667 p += 4;
9668 }
9669 }
9670
9671 /* The idea is: Replace the last instruction on a page with a
9672 branch to a patch area. Put the insn there followed by a
9673 branch back to the next page. Complicated a little by
9674 needing to handle moved conditional branches, and by not
9675 wanting to touch data-in-text. */
9676
9677 start_addr = (input_section->output_section->vma
9678 + input_section->output_offset);
9679 end_addr = (start_addr + input_section->size
9680 - relax_info->workaround_size);
9681 for (addr = ((start_addr & -pagesize) + pagesize - 4);
9682 addr < end_addr;
9683 addr += pagesize)
9684 {
9685 bfd_vma offset = addr - start_addr;
9686 Elf_Internal_Rela *lo, *hi;
9687 bfd_boolean is_data;
9688 bfd_vma patch_off, patch_addr;
9689 unsigned int insn;
9690
9691 /* Do we have a data reloc at this offset? If so, leave
9692 the word alone. */
9693 is_data = FALSE;
9694 lo = relocs;
9695 hi = relend;
9696 rel = NULL;
9697 while (lo < hi)
9698 {
9699 rel = lo + (hi - lo) / 2;
9700 if (rel->r_offset < offset)
9701 lo = rel + 1;
9702 else if (rel->r_offset > offset + 3)
9703 hi = rel;
9704 else
9705 {
9706 switch (ELF32_R_TYPE (rel->r_info))
9707 {
9708 case R_PPC_ADDR32:
9709 case R_PPC_UADDR32:
9710 case R_PPC_REL32:
9711 case R_PPC_ADDR30:
9712 is_data = TRUE;
9713 break;
9714 default:
9715 break;
9716 }
9717 break;
9718 }
9719 }
9720 if (is_data)
9721 continue;
9722
9723 /* Some instructions can be left alone too. Unconditional
9724 branches, except for bcctr with BO=0x14 (bctr, bctrl),
9725 avoid the icache failure.
9726
9727 The problem occurs due to prefetch across a page boundary
9728 where stale instructions can be fetched from the next
9729 page, and the mechanism for flushing these bad
9730 instructions fails under certain circumstances. The
9731 unconditional branches:
9732 1) Branch: b, bl, ba, bla,
9733 2) Branch Conditional: bc, bca, bcl, bcla,
9734 3) Branch Conditional to Link Register: bclr, bclrl,
9735 where (2) and (3) have BO=0x14 making them unconditional,
9736 prevent the bad prefetch because the prefetch itself is
9737 affected by these instructions. This happens even if the
9738 instruction is not executed.
9739
9740 A bctr example:
9741 .
9742 . lis 9,new_page@ha
9743 . addi 9,9,new_page@l
9744 . mtctr 9
9745 . bctr
9746 . nop
9747 . nop
9748 . new_page:
9749 .
9750 The bctr is not predicted taken due to ctr not being
9751 ready, so prefetch continues on past the bctr into the
9752 new page which might have stale instructions. If they
9753 fail to be flushed, then they will be executed after the
9754 bctr executes. Either of the following modifications
9755 prevent the bad prefetch from happening in the first
9756 place:
9757 .
9758 . lis 9,new_page@ha lis 9,new_page@ha
9759 . addi 9,9,new_page@l addi 9,9,new_page@l
9760 . mtctr 9 mtctr 9
9761 . bctr bctr
9762 . nop b somewhere_else
9763 . b somewhere_else nop
9764 . new_page: new_page:
9765 . */
9766 insn = bfd_get_32 (input_bfd, contents + offset);
9767 if ((insn & (0x3f << 26)) == (18u << 26) /* b,bl,ba,bla */
9768 || ((insn & (0x3f << 26)) == (16u << 26) /* bc,bcl,bca,bcla*/
9769 && (insn & (0x14 << 21)) == (0x14 << 21)) /* with BO=0x14 */
9770 || ((insn & (0x3f << 26)) == (19u << 26)
9771 && (insn & (0x3ff << 1)) == (16u << 1) /* bclr,bclrl */
9772 && (insn & (0x14 << 21)) == (0x14 << 21)))/* with BO=0x14 */
9773 continue;
9774
9775 patch_addr = (start_addr + input_section->size
9776 - relax_info->workaround_size);
9777 patch_addr = (patch_addr + 15) & -16;
9778 patch_off = patch_addr - start_addr;
9779 bfd_put_32 (input_bfd, B + patch_off - offset, contents + offset);
9780
9781 if (rel != NULL
9782 && rel->r_offset >= offset
9783 && rel->r_offset < offset + 4)
9784 {
9785 asection *sreloc;
9786
9787 /* If the insn we are patching had a reloc, adjust the
9788 reloc r_offset so that the reloc applies to the moved
9789 location. This matters for -r and --emit-relocs. */
9790 if (rel + 1 != relend)
9791 {
9792 Elf_Internal_Rela tmp = *rel;
9793
9794 /* Keep the relocs sorted by r_offset. */
9795 memmove (rel, rel + 1, (relend - (rel + 1)) * sizeof (*rel));
9796 relend[-1] = tmp;
9797 }
9798 relend[-1].r_offset += patch_off - offset;
9799
9800 /* Adjust REL16 addends too. */
9801 switch (ELF32_R_TYPE (relend[-1].r_info))
9802 {
9803 case R_PPC_REL16:
9804 case R_PPC_REL16_LO:
9805 case R_PPC_REL16_HI:
9806 case R_PPC_REL16_HA:
9807 relend[-1].r_addend += patch_off - offset;
9808 break;
9809 default:
9810 break;
9811 }
9812
9813 /* If we are building a PIE or shared library with
9814 non-PIC objects, perhaps we had a dynamic reloc too?
9815 If so, the dynamic reloc must move with the insn. */
9816 sreloc = elf_section_data (input_section)->sreloc;
9817 if (sreloc != NULL)
9818 {
9819 Elf32_External_Rela *slo, *shi, *srelend;
9820 bfd_vma soffset;
9821
9822 slo = (Elf32_External_Rela *) sreloc->contents;
9823 shi = srelend = slo + sreloc->reloc_count;
9824 soffset = (offset + input_section->output_section->vma
9825 + input_section->output_offset);
9826 while (slo < shi)
9827 {
9828 Elf32_External_Rela *srel = slo + (shi - slo) / 2;
9829 bfd_elf32_swap_reloca_in (output_bfd, (bfd_byte *) srel,
9830 &outrel);
9831 if (outrel.r_offset < soffset)
9832 slo = srel + 1;
9833 else if (outrel.r_offset > soffset + 3)
9834 shi = srel;
9835 else
9836 {
9837 if (srel + 1 != srelend)
9838 {
9839 memmove (srel, srel + 1,
9840 (srelend - (srel + 1)) * sizeof (*srel));
9841 srel = srelend - 1;
9842 }
9843 outrel.r_offset += patch_off - offset;
9844 bfd_elf32_swap_reloca_out (output_bfd, &outrel,
9845 (bfd_byte *) srel);
9846 break;
9847 }
9848 }
9849 }
9850 }
9851 else
9852 rel = NULL;
9853
9854 if ((insn & (0x3f << 26)) == (16u << 26) /* bc */
9855 && (insn & 2) == 0 /* relative */)
9856 {
9857 bfd_vma delta = ((insn & 0xfffc) ^ 0x8000) - 0x8000;
9858
9859 delta += offset - patch_off;
9860 if (bfd_link_relocatable (info) && rel != NULL)
9861 delta = 0;
9862 if (!bfd_link_relocatable (info) && rel != NULL)
9863 {
9864 enum elf_ppc_reloc_type r_type;
9865
9866 r_type = ELF32_R_TYPE (relend[-1].r_info);
9867 if (r_type == R_PPC_REL14_BRTAKEN)
9868 insn |= BRANCH_PREDICT_BIT;
9869 else if (r_type == R_PPC_REL14_BRNTAKEN)
9870 insn &= ~BRANCH_PREDICT_BIT;
9871 else
9872 BFD_ASSERT (r_type == R_PPC_REL14);
9873
9874 if ((r_type == R_PPC_REL14_BRTAKEN
9875 || r_type == R_PPC_REL14_BRNTAKEN)
9876 && delta + 0x8000 < 0x10000
9877 && (bfd_signed_vma) delta < 0)
9878 insn ^= BRANCH_PREDICT_BIT;
9879 }
9880 if (delta + 0x8000 < 0x10000)
9881 {
9882 bfd_put_32 (input_bfd,
9883 (insn & ~0xfffc) | (delta & 0xfffc),
9884 contents + patch_off);
9885 patch_off += 4;
9886 bfd_put_32 (input_bfd,
9887 B | ((offset + 4 - patch_off) & 0x3fffffc),
9888 contents + patch_off);
9889 patch_off += 4;
9890 }
9891 else
9892 {
9893 if (rel != NULL)
9894 {
9895 unsigned int r_sym = ELF32_R_SYM (relend[-1].r_info);
9896
9897 relend[-1].r_offset += 8;
9898 relend[-1].r_info = ELF32_R_INFO (r_sym, R_PPC_REL24);
9899 }
9900 bfd_put_32 (input_bfd,
9901 (insn & ~0xfffc) | 8,
9902 contents + patch_off);
9903 patch_off += 4;
9904 bfd_put_32 (input_bfd,
9905 B | ((offset + 4 - patch_off) & 0x3fffffc),
9906 contents + patch_off);
9907 patch_off += 4;
9908 bfd_put_32 (input_bfd,
9909 B | ((delta - 8) & 0x3fffffc),
9910 contents + patch_off);
9911 patch_off += 4;
9912 }
9913 }
9914 else
9915 {
9916 bfd_put_32 (input_bfd, insn, contents + patch_off);
9917 patch_off += 4;
9918 bfd_put_32 (input_bfd,
9919 B | ((offset + 4 - patch_off) & 0x3fffffc),
9920 contents + patch_off);
9921 patch_off += 4;
9922 }
9923 BFD_ASSERT (patch_off <= input_section->size);
9924 relax_info->workaround_size = input_section->size - patch_off;
9925 }
9926 }
9927
9928 return ret;
9929 }
9930 \f
9931 /* Finish up dynamic symbol handling. We set the contents of various
9932 dynamic sections here. */
9933
9934 static bfd_boolean
9935 ppc_elf_finish_dynamic_symbol (bfd *output_bfd,
9936 struct bfd_link_info *info,
9937 struct elf_link_hash_entry *h,
9938 Elf_Internal_Sym *sym)
9939 {
9940 struct ppc_elf_link_hash_table *htab;
9941 struct plt_entry *ent;
9942 bfd_boolean doneone;
9943
9944 #ifdef DEBUG
9945 fprintf (stderr, "ppc_elf_finish_dynamic_symbol called for %s",
9946 h->root.root.string);
9947 #endif
9948
9949 htab = ppc_elf_hash_table (info);
9950 BFD_ASSERT (htab->elf.dynobj != NULL);
9951
9952 doneone = FALSE;
9953 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
9954 if (ent->plt.offset != (bfd_vma) -1)
9955 {
9956 if (!doneone)
9957 {
9958 Elf_Internal_Rela rela;
9959 bfd_byte *loc;
9960 bfd_vma reloc_index;
9961
9962 if (htab->plt_type == PLT_NEW
9963 || !htab->elf.dynamic_sections_created
9964 || h->dynindx == -1)
9965 reloc_index = ent->plt.offset / 4;
9966 else
9967 {
9968 reloc_index = ((ent->plt.offset - htab->plt_initial_entry_size)
9969 / htab->plt_slot_size);
9970 if (reloc_index > PLT_NUM_SINGLE_ENTRIES
9971 && htab->plt_type == PLT_OLD)
9972 reloc_index -= (reloc_index - PLT_NUM_SINGLE_ENTRIES) / 2;
9973 }
9974
9975 /* This symbol has an entry in the procedure linkage table.
9976 Set it up. */
9977 if (htab->plt_type == PLT_VXWORKS
9978 && htab->elf.dynamic_sections_created
9979 && h->dynindx != -1)
9980 {
9981 bfd_vma got_offset;
9982 const bfd_vma *plt_entry;
9983
9984 /* The first three entries in .got.plt are reserved. */
9985 got_offset = (reloc_index + 3) * 4;
9986
9987 /* Use the right PLT. */
9988 plt_entry = bfd_link_pic (info) ? ppc_elf_vxworks_pic_plt_entry
9989 : ppc_elf_vxworks_plt_entry;
9990
9991 /* Fill in the .plt on VxWorks. */
9992 if (bfd_link_pic (info))
9993 {
9994 bfd_put_32 (output_bfd,
9995 plt_entry[0] | PPC_HA (got_offset),
9996 htab->plt->contents + ent->plt.offset + 0);
9997 bfd_put_32 (output_bfd,
9998 plt_entry[1] | PPC_LO (got_offset),
9999 htab->plt->contents + ent->plt.offset + 4);
10000 }
10001 else
10002 {
10003 bfd_vma got_loc = got_offset + SYM_VAL (htab->elf.hgot);
10004
10005 bfd_put_32 (output_bfd,
10006 plt_entry[0] | PPC_HA (got_loc),
10007 htab->plt->contents + ent->plt.offset + 0);
10008 bfd_put_32 (output_bfd,
10009 plt_entry[1] | PPC_LO (got_loc),
10010 htab->plt->contents + ent->plt.offset + 4);
10011 }
10012
10013 bfd_put_32 (output_bfd, plt_entry[2],
10014 htab->plt->contents + ent->plt.offset + 8);
10015 bfd_put_32 (output_bfd, plt_entry[3],
10016 htab->plt->contents + ent->plt.offset + 12);
10017
10018 /* This instruction is an immediate load. The value loaded is
10019 the byte offset of the R_PPC_JMP_SLOT relocation from the
10020 start of the .rela.plt section. The value is stored in the
10021 low-order 16 bits of the load instruction. */
10022 /* NOTE: It appears that this is now an index rather than a
10023 prescaled offset. */
10024 bfd_put_32 (output_bfd,
10025 plt_entry[4] | reloc_index,
10026 htab->plt->contents + ent->plt.offset + 16);
10027 /* This instruction is a PC-relative branch whose target is
10028 the start of the PLT section. The address of this branch
10029 instruction is 20 bytes beyond the start of this PLT entry.
10030 The address is encoded in bits 6-29, inclusive. The value
10031 stored is right-shifted by two bits, permitting a 26-bit
10032 offset. */
10033 bfd_put_32 (output_bfd,
10034 (plt_entry[5]
10035 | (-(ent->plt.offset + 20) & 0x03fffffc)),
10036 htab->plt->contents + ent->plt.offset + 20);
10037 bfd_put_32 (output_bfd, plt_entry[6],
10038 htab->plt->contents + ent->plt.offset + 24);
10039 bfd_put_32 (output_bfd, plt_entry[7],
10040 htab->plt->contents + ent->plt.offset + 28);
10041
10042 /* Fill in the GOT entry corresponding to this PLT slot with
10043 the address immediately after the "bctr" instruction
10044 in this PLT entry. */
10045 bfd_put_32 (output_bfd, (htab->plt->output_section->vma
10046 + htab->plt->output_offset
10047 + ent->plt.offset + 16),
10048 htab->sgotplt->contents + got_offset);
10049
10050 if (!bfd_link_pic (info))
10051 {
10052 /* Fill in a couple of entries in .rela.plt.unloaded. */
10053 loc = htab->srelplt2->contents
10054 + ((VXWORKS_PLTRESOLVE_RELOCS + reloc_index
10055 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS)
10056 * sizeof (Elf32_External_Rela));
10057
10058 /* Provide the @ha relocation for the first instruction. */
10059 rela.r_offset = (htab->plt->output_section->vma
10060 + htab->plt->output_offset
10061 + ent->plt.offset + 2);
10062 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
10063 R_PPC_ADDR16_HA);
10064 rela.r_addend = got_offset;
10065 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10066 loc += sizeof (Elf32_External_Rela);
10067
10068 /* Provide the @l relocation for the second instruction. */
10069 rela.r_offset = (htab->plt->output_section->vma
10070 + htab->plt->output_offset
10071 + ent->plt.offset + 6);
10072 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
10073 R_PPC_ADDR16_LO);
10074 rela.r_addend = got_offset;
10075 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10076 loc += sizeof (Elf32_External_Rela);
10077
10078 /* Provide a relocation for the GOT entry corresponding to this
10079 PLT slot. Point it at the middle of the .plt entry. */
10080 rela.r_offset = (htab->sgotplt->output_section->vma
10081 + htab->sgotplt->output_offset
10082 + got_offset);
10083 rela.r_info = ELF32_R_INFO (htab->elf.hplt->indx,
10084 R_PPC_ADDR32);
10085 rela.r_addend = ent->plt.offset + 16;
10086 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10087 }
10088
10089 /* VxWorks uses non-standard semantics for R_PPC_JMP_SLOT.
10090 In particular, the offset for the relocation is not the
10091 address of the PLT entry for this function, as specified
10092 by the ABI. Instead, the offset is set to the address of
10093 the GOT slot for this function. See EABI 4.4.4.1. */
10094 rela.r_offset = (htab->sgotplt->output_section->vma
10095 + htab->sgotplt->output_offset
10096 + got_offset);
10097
10098 }
10099 else
10100 {
10101 asection *splt = htab->plt;
10102 if (!htab->elf.dynamic_sections_created
10103 || h->dynindx == -1)
10104 splt = htab->iplt;
10105
10106 rela.r_offset = (splt->output_section->vma
10107 + splt->output_offset
10108 + ent->plt.offset);
10109 if (htab->plt_type == PLT_OLD
10110 || !htab->elf.dynamic_sections_created
10111 || h->dynindx == -1)
10112 {
10113 /* We don't need to fill in the .plt. The ppc dynamic
10114 linker will fill it in. */
10115 }
10116 else
10117 {
10118 bfd_vma val = (htab->glink_pltresolve + ent->plt.offset
10119 + htab->glink->output_section->vma
10120 + htab->glink->output_offset);
10121 bfd_put_32 (output_bfd, val,
10122 splt->contents + ent->plt.offset);
10123 }
10124 }
10125
10126 /* Fill in the entry in the .rela.plt section. */
10127 rela.r_addend = 0;
10128 if (!htab->elf.dynamic_sections_created
10129 || h->dynindx == -1)
10130 {
10131 BFD_ASSERT (h->type == STT_GNU_IFUNC
10132 && h->def_regular
10133 && (h->root.type == bfd_link_hash_defined
10134 || h->root.type == bfd_link_hash_defweak));
10135 rela.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
10136 rela.r_addend = SYM_VAL (h);
10137 }
10138 else
10139 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_JMP_SLOT);
10140
10141 if (!htab->elf.dynamic_sections_created
10142 || h->dynindx == -1)
10143 loc = (htab->reliplt->contents
10144 + (htab->reliplt->reloc_count++
10145 * sizeof (Elf32_External_Rela)));
10146 else
10147 loc = (htab->relplt->contents
10148 + reloc_index * sizeof (Elf32_External_Rela));
10149 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10150
10151 if (!h->def_regular)
10152 {
10153 /* Mark the symbol as undefined, rather than as
10154 defined in the .plt section. Leave the value if
10155 there were any relocations where pointer equality
10156 matters (this is a clue for the dynamic linker, to
10157 make function pointer comparisons work between an
10158 application and shared library), otherwise set it
10159 to zero. */
10160 sym->st_shndx = SHN_UNDEF;
10161 if (!h->pointer_equality_needed)
10162 sym->st_value = 0;
10163 else if (!h->ref_regular_nonweak)
10164 {
10165 /* This breaks function pointer comparisons, but
10166 that is better than breaking tests for a NULL
10167 function pointer. */
10168 sym->st_value = 0;
10169 }
10170 }
10171 else if (h->type == STT_GNU_IFUNC
10172 && !bfd_link_pic (info))
10173 {
10174 /* Set the value of ifunc symbols in a non-pie
10175 executable to the glink entry. This is to avoid
10176 text relocations. We can't do this for ifunc in
10177 allocate_dynrelocs, as we do for normal dynamic
10178 function symbols with plt entries, because we need
10179 to keep the original value around for the ifunc
10180 relocation. */
10181 sym->st_shndx = (_bfd_elf_section_from_bfd_section
10182 (output_bfd, htab->glink->output_section));
10183 sym->st_value = (ent->glink_offset
10184 + htab->glink->output_offset
10185 + htab->glink->output_section->vma);
10186 }
10187 doneone = TRUE;
10188 }
10189
10190 if (htab->plt_type == PLT_NEW
10191 || !htab->elf.dynamic_sections_created
10192 || h->dynindx == -1)
10193 {
10194 unsigned char *p;
10195 asection *splt = htab->plt;
10196 if (!htab->elf.dynamic_sections_created
10197 || h->dynindx == -1)
10198 splt = htab->iplt;
10199
10200 p = (unsigned char *) htab->glink->contents + ent->glink_offset;
10201
10202 if (h == htab->tls_get_addr && !htab->params->no_tls_get_addr_opt)
10203 {
10204 bfd_put_32 (output_bfd, LWZ_11_3, p);
10205 p += 4;
10206 bfd_put_32 (output_bfd, LWZ_12_3 + 4, p);
10207 p += 4;
10208 bfd_put_32 (output_bfd, MR_0_3, p);
10209 p += 4;
10210 bfd_put_32 (output_bfd, CMPWI_11_0, p);
10211 p += 4;
10212 bfd_put_32 (output_bfd, ADD_3_12_2, p);
10213 p += 4;
10214 bfd_put_32 (output_bfd, BEQLR, p);
10215 p += 4;
10216 bfd_put_32 (output_bfd, MR_3_0, p);
10217 p += 4;
10218 bfd_put_32 (output_bfd, NOP, p);
10219 p += 4;
10220 }
10221
10222 write_glink_stub (ent, splt, p, info);
10223
10224 if (!bfd_link_pic (info))
10225 /* We only need one non-PIC glink stub. */
10226 break;
10227 }
10228 else
10229 break;
10230 }
10231
10232 if (h->needs_copy)
10233 {
10234 asection *s;
10235 Elf_Internal_Rela rela;
10236 bfd_byte *loc;
10237
10238 /* This symbols needs a copy reloc. Set it up. */
10239
10240 #ifdef DEBUG
10241 fprintf (stderr, ", copy");
10242 #endif
10243
10244 BFD_ASSERT (h->dynindx != -1);
10245
10246 if (ppc_elf_hash_entry (h)->has_sda_refs)
10247 s = htab->relsbss;
10248 else
10249 s = htab->relbss;
10250 BFD_ASSERT (s != NULL);
10251
10252 rela.r_offset = SYM_VAL (h);
10253 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_COPY);
10254 rela.r_addend = 0;
10255 loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
10256 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10257 }
10258
10259 #ifdef DEBUG
10260 fprintf (stderr, "\n");
10261 #endif
10262
10263 return TRUE;
10264 }
10265 \f
10266 static enum elf_reloc_type_class
10267 ppc_elf_reloc_type_class (const struct bfd_link_info *info,
10268 const asection *rel_sec,
10269 const Elf_Internal_Rela *rela)
10270 {
10271 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
10272
10273 if (rel_sec == htab->reliplt)
10274 return reloc_class_ifunc;
10275
10276 switch (ELF32_R_TYPE (rela->r_info))
10277 {
10278 case R_PPC_RELATIVE:
10279 return reloc_class_relative;
10280 case R_PPC_JMP_SLOT:
10281 return reloc_class_plt;
10282 case R_PPC_COPY:
10283 return reloc_class_copy;
10284 default:
10285 return reloc_class_normal;
10286 }
10287 }
10288 \f
10289 /* Finish up the dynamic sections. */
10290
10291 static bfd_boolean
10292 ppc_elf_finish_dynamic_sections (bfd *output_bfd,
10293 struct bfd_link_info *info)
10294 {
10295 asection *sdyn;
10296 asection *splt;
10297 struct ppc_elf_link_hash_table *htab;
10298 bfd_vma got;
10299 bfd *dynobj;
10300 bfd_boolean ret = TRUE;
10301
10302 #ifdef DEBUG
10303 fprintf (stderr, "ppc_elf_finish_dynamic_sections called\n");
10304 #endif
10305
10306 htab = ppc_elf_hash_table (info);
10307 dynobj = elf_hash_table (info)->dynobj;
10308 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
10309 if (htab->is_vxworks)
10310 splt = bfd_get_linker_section (dynobj, ".plt");
10311 else
10312 splt = NULL;
10313
10314 got = 0;
10315 if (htab->elf.hgot != NULL)
10316 got = SYM_VAL (htab->elf.hgot);
10317
10318 if (htab->elf.dynamic_sections_created)
10319 {
10320 Elf32_External_Dyn *dyncon, *dynconend;
10321
10322 BFD_ASSERT (htab->plt != NULL && sdyn != NULL);
10323
10324 dyncon = (Elf32_External_Dyn *) sdyn->contents;
10325 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
10326 for (; dyncon < dynconend; dyncon++)
10327 {
10328 Elf_Internal_Dyn dyn;
10329 asection *s;
10330
10331 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
10332
10333 switch (dyn.d_tag)
10334 {
10335 case DT_PLTGOT:
10336 if (htab->is_vxworks)
10337 s = htab->sgotplt;
10338 else
10339 s = htab->plt;
10340 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
10341 break;
10342
10343 case DT_PLTRELSZ:
10344 dyn.d_un.d_val = htab->relplt->size;
10345 break;
10346
10347 case DT_JMPREL:
10348 s = htab->relplt;
10349 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
10350 break;
10351
10352 case DT_PPC_GOT:
10353 dyn.d_un.d_ptr = got;
10354 break;
10355
10356 case DT_RELASZ:
10357 if (htab->is_vxworks)
10358 {
10359 if (htab->relplt)
10360 dyn.d_un.d_ptr -= htab->relplt->size;
10361 break;
10362 }
10363 continue;
10364
10365 default:
10366 if (htab->is_vxworks
10367 && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn))
10368 break;
10369 continue;
10370 }
10371
10372 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
10373 }
10374 }
10375
10376 if (htab->got != NULL)
10377 {
10378 if (htab->elf.hgot->root.u.def.section == htab->got
10379 || htab->elf.hgot->root.u.def.section == htab->sgotplt)
10380 {
10381 unsigned char *p = htab->elf.hgot->root.u.def.section->contents;
10382
10383 p += htab->elf.hgot->root.u.def.value;
10384 if (htab->plt_type == PLT_OLD)
10385 {
10386 /* Add a blrl instruction at _GLOBAL_OFFSET_TABLE_-4
10387 so that a function can easily find the address of
10388 _GLOBAL_OFFSET_TABLE_. */
10389 BFD_ASSERT (htab->elf.hgot->root.u.def.value - 4
10390 < htab->elf.hgot->root.u.def.section->size);
10391 bfd_put_32 (output_bfd, 0x4e800021, p - 4);
10392 }
10393
10394 if (sdyn != NULL)
10395 {
10396 bfd_vma val = sdyn->output_section->vma + sdyn->output_offset;
10397 BFD_ASSERT (htab->elf.hgot->root.u.def.value
10398 < htab->elf.hgot->root.u.def.section->size);
10399 bfd_put_32 (output_bfd, val, p);
10400 }
10401 }
10402 else
10403 {
10404 info->callbacks->einfo (_("%P: %s not defined in linker created %s\n"),
10405 htab->elf.hgot->root.root.string,
10406 (htab->sgotplt != NULL
10407 ? htab->sgotplt->name : htab->got->name));
10408 bfd_set_error (bfd_error_bad_value);
10409 ret = FALSE;
10410 }
10411
10412 elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 4;
10413 }
10414
10415 /* Fill in the first entry in the VxWorks procedure linkage table. */
10416 if (splt && splt->size > 0)
10417 {
10418 /* Use the right PLT. */
10419 const bfd_vma *plt_entry = (bfd_link_pic (info)
10420 ? ppc_elf_vxworks_pic_plt0_entry
10421 : ppc_elf_vxworks_plt0_entry);
10422
10423 if (!bfd_link_pic (info))
10424 {
10425 bfd_vma got_value = SYM_VAL (htab->elf.hgot);
10426
10427 bfd_put_32 (output_bfd, plt_entry[0] | PPC_HA (got_value),
10428 splt->contents + 0);
10429 bfd_put_32 (output_bfd, plt_entry[1] | PPC_LO (got_value),
10430 splt->contents + 4);
10431 }
10432 else
10433 {
10434 bfd_put_32 (output_bfd, plt_entry[0], splt->contents + 0);
10435 bfd_put_32 (output_bfd, plt_entry[1], splt->contents + 4);
10436 }
10437 bfd_put_32 (output_bfd, plt_entry[2], splt->contents + 8);
10438 bfd_put_32 (output_bfd, plt_entry[3], splt->contents + 12);
10439 bfd_put_32 (output_bfd, plt_entry[4], splt->contents + 16);
10440 bfd_put_32 (output_bfd, plt_entry[5], splt->contents + 20);
10441 bfd_put_32 (output_bfd, plt_entry[6], splt->contents + 24);
10442 bfd_put_32 (output_bfd, plt_entry[7], splt->contents + 28);
10443
10444 if (! bfd_link_pic (info))
10445 {
10446 Elf_Internal_Rela rela;
10447 bfd_byte *loc;
10448
10449 loc = htab->srelplt2->contents;
10450
10451 /* Output the @ha relocation for the first instruction. */
10452 rela.r_offset = (htab->plt->output_section->vma
10453 + htab->plt->output_offset
10454 + 2);
10455 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
10456 rela.r_addend = 0;
10457 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10458 loc += sizeof (Elf32_External_Rela);
10459
10460 /* Output the @l relocation for the second instruction. */
10461 rela.r_offset = (htab->plt->output_section->vma
10462 + htab->plt->output_offset
10463 + 6);
10464 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
10465 rela.r_addend = 0;
10466 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10467 loc += sizeof (Elf32_External_Rela);
10468
10469 /* Fix up the remaining relocations. They may have the wrong
10470 symbol index for _G_O_T_ or _P_L_T_ depending on the order
10471 in which symbols were output. */
10472 while (loc < htab->srelplt2->contents + htab->srelplt2->size)
10473 {
10474 Elf_Internal_Rela rel;
10475
10476 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
10477 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
10478 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
10479 loc += sizeof (Elf32_External_Rela);
10480
10481 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
10482 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
10483 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
10484 loc += sizeof (Elf32_External_Rela);
10485
10486 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
10487 rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_PPC_ADDR32);
10488 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
10489 loc += sizeof (Elf32_External_Rela);
10490 }
10491 }
10492 }
10493
10494 if (htab->glink != NULL
10495 && htab->glink->contents != NULL
10496 && htab->elf.dynamic_sections_created)
10497 {
10498 unsigned char *p;
10499 unsigned char *endp;
10500 bfd_vma res0;
10501 unsigned int i;
10502
10503 /*
10504 * PIC glink code is the following:
10505 *
10506 * # ith PLT code stub.
10507 * addis 11,30,(plt+(i-1)*4-got)@ha
10508 * lwz 11,(plt+(i-1)*4-got)@l(11)
10509 * mtctr 11
10510 * bctr
10511 *
10512 * # A table of branches, one for each plt entry.
10513 * # The idea is that the plt call stub loads ctr and r11 with these
10514 * # addresses, so (r11 - res_0) gives the plt index * 4.
10515 * res_0: b PLTresolve
10516 * res_1: b PLTresolve
10517 * .
10518 * # Some number of entries towards the end can be nops
10519 * res_n_m3: nop
10520 * res_n_m2: nop
10521 * res_n_m1:
10522 *
10523 * PLTresolve:
10524 * addis 11,11,(1f-res_0)@ha
10525 * mflr 0
10526 * bcl 20,31,1f
10527 * 1: addi 11,11,(1b-res_0)@l
10528 * mflr 12
10529 * mtlr 0
10530 * sub 11,11,12 # r11 = index * 4
10531 * addis 12,12,(got+4-1b)@ha
10532 * lwz 0,(got+4-1b)@l(12) # got[1] address of dl_runtime_resolve
10533 * lwz 12,(got+8-1b)@l(12) # got[2] contains the map address
10534 * mtctr 0
10535 * add 0,11,11
10536 * add 11,0,11 # r11 = index * 12 = reloc offset.
10537 * bctr
10538 */
10539 static const unsigned int pic_plt_resolve[] =
10540 {
10541 ADDIS_11_11,
10542 MFLR_0,
10543 BCL_20_31,
10544 ADDI_11_11,
10545 MFLR_12,
10546 MTLR_0,
10547 SUB_11_11_12,
10548 ADDIS_12_12,
10549 LWZ_0_12,
10550 LWZ_12_12,
10551 MTCTR_0,
10552 ADD_0_11_11,
10553 ADD_11_0_11,
10554 BCTR,
10555 NOP,
10556 NOP
10557 };
10558
10559 /*
10560 * Non-PIC glink code is a little simpler.
10561 *
10562 * # ith PLT code stub.
10563 * lis 11,(plt+(i-1)*4)@ha
10564 * lwz 11,(plt+(i-1)*4)@l(11)
10565 * mtctr 11
10566 * bctr
10567 *
10568 * The branch table is the same, then comes
10569 *
10570 * PLTresolve:
10571 * lis 12,(got+4)@ha
10572 * addis 11,11,(-res_0)@ha
10573 * lwz 0,(got+4)@l(12) # got[1] address of dl_runtime_resolve
10574 * addi 11,11,(-res_0)@l # r11 = index * 4
10575 * mtctr 0
10576 * add 0,11,11
10577 * lwz 12,(got+8)@l(12) # got[2] contains the map address
10578 * add 11,0,11 # r11 = index * 12 = reloc offset.
10579 * bctr
10580 */
10581 static const unsigned int plt_resolve[] =
10582 {
10583 LIS_12,
10584 ADDIS_11_11,
10585 LWZ_0_12,
10586 ADDI_11_11,
10587 MTCTR_0,
10588 ADD_0_11_11,
10589 LWZ_12_12,
10590 ADD_11_0_11,
10591 BCTR,
10592 NOP,
10593 NOP,
10594 NOP,
10595 NOP,
10596 NOP,
10597 NOP,
10598 NOP
10599 };
10600
10601 if (ARRAY_SIZE (pic_plt_resolve) != GLINK_PLTRESOLVE / 4)
10602 abort ();
10603 if (ARRAY_SIZE (plt_resolve) != GLINK_PLTRESOLVE / 4)
10604 abort ();
10605
10606 /* Build the branch table, one for each plt entry (less one),
10607 and perhaps some padding. */
10608 p = htab->glink->contents;
10609 p += htab->glink_pltresolve;
10610 endp = htab->glink->contents;
10611 endp += htab->glink->size - GLINK_PLTRESOLVE;
10612 while (p < endp - (htab->params->ppc476_workaround ? 0 : 8 * 4))
10613 {
10614 bfd_put_32 (output_bfd, B + endp - p, p);
10615 p += 4;
10616 }
10617 while (p < endp)
10618 {
10619 bfd_put_32 (output_bfd, NOP, p);
10620 p += 4;
10621 }
10622
10623 res0 = (htab->glink_pltresolve
10624 + htab->glink->output_section->vma
10625 + htab->glink->output_offset);
10626
10627 if (htab->params->ppc476_workaround)
10628 {
10629 /* Ensure that a call stub at the end of a page doesn't
10630 result in prefetch over the end of the page into the
10631 glink branch table. */
10632 bfd_vma pagesize = (bfd_vma) 1 << htab->params->pagesize_p2;
10633 bfd_vma page_addr;
10634 bfd_vma glink_start = (htab->glink->output_section->vma
10635 + htab->glink->output_offset);
10636
10637 for (page_addr = res0 & -pagesize;
10638 page_addr > glink_start;
10639 page_addr -= pagesize)
10640 {
10641 /* We have a plt call stub that may need fixing. */
10642 bfd_byte *loc;
10643 unsigned int insn;
10644
10645 loc = htab->glink->contents + page_addr - 4 - glink_start;
10646 insn = bfd_get_32 (output_bfd, loc);
10647 if (insn == BCTR)
10648 {
10649 /* By alignment, we know that there must be at least
10650 one other call stub before this one. */
10651 insn = bfd_get_32 (output_bfd, loc - 16);
10652 if (insn == BCTR)
10653 bfd_put_32 (output_bfd, B | (-16 & 0x3fffffc), loc);
10654 else
10655 bfd_put_32 (output_bfd, B | (-20 & 0x3fffffc), loc);
10656 }
10657 }
10658 }
10659
10660 /* Last comes the PLTresolve stub. */
10661 if (bfd_link_pic (info))
10662 {
10663 bfd_vma bcl;
10664
10665 for (i = 0; i < ARRAY_SIZE (pic_plt_resolve); i++)
10666 {
10667 unsigned int insn = pic_plt_resolve[i];
10668
10669 if (htab->params->ppc476_workaround && insn == NOP)
10670 insn = BA + 0;
10671 bfd_put_32 (output_bfd, insn, p);
10672 p += 4;
10673 }
10674 p -= 4 * ARRAY_SIZE (pic_plt_resolve);
10675
10676 bcl = (htab->glink->size - GLINK_PLTRESOLVE + 3*4
10677 + htab->glink->output_section->vma
10678 + htab->glink->output_offset);
10679
10680 bfd_put_32 (output_bfd,
10681 ADDIS_11_11 + PPC_HA (bcl - res0), p + 0*4);
10682 bfd_put_32 (output_bfd,
10683 ADDI_11_11 + PPC_LO (bcl - res0), p + 3*4);
10684 bfd_put_32 (output_bfd,
10685 ADDIS_12_12 + PPC_HA (got + 4 - bcl), p + 7*4);
10686 if (PPC_HA (got + 4 - bcl) == PPC_HA (got + 8 - bcl))
10687 {
10688 bfd_put_32 (output_bfd,
10689 LWZ_0_12 + PPC_LO (got + 4 - bcl), p + 8*4);
10690 bfd_put_32 (output_bfd,
10691 LWZ_12_12 + PPC_LO (got + 8 - bcl), p + 9*4);
10692 }
10693 else
10694 {
10695 bfd_put_32 (output_bfd,
10696 LWZU_0_12 + PPC_LO (got + 4 - bcl), p + 8*4);
10697 bfd_put_32 (output_bfd,
10698 LWZ_12_12 + 4, p + 9*4);
10699 }
10700 }
10701 else
10702 {
10703 for (i = 0; i < ARRAY_SIZE (plt_resolve); i++)
10704 {
10705 unsigned int insn = plt_resolve[i];
10706
10707 if (htab->params->ppc476_workaround && insn == NOP)
10708 insn = BA + 0;
10709 bfd_put_32 (output_bfd, insn, p);
10710 p += 4;
10711 }
10712 p -= 4 * ARRAY_SIZE (plt_resolve);
10713
10714 bfd_put_32 (output_bfd,
10715 LIS_12 + PPC_HA (got + 4), p + 0*4);
10716 bfd_put_32 (output_bfd,
10717 ADDIS_11_11 + PPC_HA (-res0), p + 1*4);
10718 bfd_put_32 (output_bfd,
10719 ADDI_11_11 + PPC_LO (-res0), p + 3*4);
10720 if (PPC_HA (got + 4) == PPC_HA (got + 8))
10721 {
10722 bfd_put_32 (output_bfd,
10723 LWZ_0_12 + PPC_LO (got + 4), p + 2*4);
10724 bfd_put_32 (output_bfd,
10725 LWZ_12_12 + PPC_LO (got + 8), p + 6*4);
10726 }
10727 else
10728 {
10729 bfd_put_32 (output_bfd,
10730 LWZU_0_12 + PPC_LO (got + 4), p + 2*4);
10731 bfd_put_32 (output_bfd,
10732 LWZ_12_12 + 4, p + 6*4);
10733 }
10734 }
10735 }
10736
10737 if (htab->glink_eh_frame != NULL
10738 && htab->glink_eh_frame->contents != NULL)
10739 {
10740 unsigned char *p = htab->glink_eh_frame->contents;
10741 bfd_vma val;
10742
10743 p += sizeof (glink_eh_frame_cie);
10744 /* FDE length. */
10745 p += 4;
10746 /* CIE pointer. */
10747 p += 4;
10748 /* Offset to .glink. */
10749 val = (htab->glink->output_section->vma
10750 + htab->glink->output_offset);
10751 val -= (htab->glink_eh_frame->output_section->vma
10752 + htab->glink_eh_frame->output_offset);
10753 val -= p - htab->glink_eh_frame->contents;
10754 bfd_put_32 (htab->elf.dynobj, val, p);
10755
10756 if (htab->glink_eh_frame->sec_info_type == SEC_INFO_TYPE_EH_FRAME
10757 && !_bfd_elf_write_section_eh_frame (output_bfd, info,
10758 htab->glink_eh_frame,
10759 htab->glink_eh_frame->contents))
10760 return FALSE;
10761 }
10762
10763 return ret;
10764 }
10765 \f
10766 #define TARGET_LITTLE_SYM powerpc_elf32_le_vec
10767 #define TARGET_LITTLE_NAME "elf32-powerpcle"
10768 #define TARGET_BIG_SYM powerpc_elf32_vec
10769 #define TARGET_BIG_NAME "elf32-powerpc"
10770 #define ELF_ARCH bfd_arch_powerpc
10771 #define ELF_TARGET_ID PPC32_ELF_DATA
10772 #define ELF_MACHINE_CODE EM_PPC
10773 #ifdef __QNXTARGET__
10774 #define ELF_MAXPAGESIZE 0x1000
10775 #define ELF_COMMONPAGESIZE 0x1000
10776 #else
10777 #define ELF_MAXPAGESIZE 0x10000
10778 #define ELF_COMMONPAGESIZE 0x10000
10779 #endif
10780 #define ELF_MINPAGESIZE 0x1000
10781 #define elf_info_to_howto ppc_elf_info_to_howto
10782
10783 #ifdef EM_CYGNUS_POWERPC
10784 #define ELF_MACHINE_ALT1 EM_CYGNUS_POWERPC
10785 #endif
10786
10787 #ifdef EM_PPC_OLD
10788 #define ELF_MACHINE_ALT2 EM_PPC_OLD
10789 #endif
10790
10791 #define elf_backend_plt_not_loaded 1
10792 #define elf_backend_can_gc_sections 1
10793 #define elf_backend_can_refcount 1
10794 #define elf_backend_rela_normal 1
10795 #define elf_backend_caches_rawsize 1
10796
10797 #define bfd_elf32_mkobject ppc_elf_mkobject
10798 #define bfd_elf32_bfd_merge_private_bfd_data ppc_elf_merge_private_bfd_data
10799 #define bfd_elf32_bfd_relax_section ppc_elf_relax_section
10800 #define bfd_elf32_bfd_reloc_type_lookup ppc_elf_reloc_type_lookup
10801 #define bfd_elf32_bfd_reloc_name_lookup ppc_elf_reloc_name_lookup
10802 #define bfd_elf32_bfd_set_private_flags ppc_elf_set_private_flags
10803 #define bfd_elf32_bfd_link_hash_table_create ppc_elf_link_hash_table_create
10804 #define bfd_elf32_get_synthetic_symtab ppc_elf_get_synthetic_symtab
10805
10806 #define elf_backend_object_p ppc_elf_object_p
10807 #define elf_backend_gc_mark_hook ppc_elf_gc_mark_hook
10808 #define elf_backend_gc_sweep_hook ppc_elf_gc_sweep_hook
10809 #define elf_backend_section_from_shdr ppc_elf_section_from_shdr
10810 #define elf_backend_relocate_section ppc_elf_relocate_section
10811 #define elf_backend_create_dynamic_sections ppc_elf_create_dynamic_sections
10812 #define elf_backend_check_relocs ppc_elf_check_relocs
10813 #define elf_backend_copy_indirect_symbol ppc_elf_copy_indirect_symbol
10814 #define elf_backend_adjust_dynamic_symbol ppc_elf_adjust_dynamic_symbol
10815 #define elf_backend_add_symbol_hook ppc_elf_add_symbol_hook
10816 #define elf_backend_size_dynamic_sections ppc_elf_size_dynamic_sections
10817 #define elf_backend_hash_symbol ppc_elf_hash_symbol
10818 #define elf_backend_finish_dynamic_symbol ppc_elf_finish_dynamic_symbol
10819 #define elf_backend_finish_dynamic_sections ppc_elf_finish_dynamic_sections
10820 #define elf_backend_fake_sections ppc_elf_fake_sections
10821 #define elf_backend_additional_program_headers ppc_elf_additional_program_headers
10822 #define elf_backend_modify_segment_map ppc_elf_modify_segment_map
10823 #define elf_backend_grok_prstatus ppc_elf_grok_prstatus
10824 #define elf_backend_grok_psinfo ppc_elf_grok_psinfo
10825 #define elf_backend_write_core_note ppc_elf_write_core_note
10826 #define elf_backend_reloc_type_class ppc_elf_reloc_type_class
10827 #define elf_backend_begin_write_processing ppc_elf_begin_write_processing
10828 #define elf_backend_final_write_processing ppc_elf_final_write_processing
10829 #define elf_backend_write_section ppc_elf_write_section
10830 #define elf_backend_get_sec_type_attr ppc_elf_get_sec_type_attr
10831 #define elf_backend_plt_sym_val ppc_elf_plt_sym_val
10832 #define elf_backend_action_discarded ppc_elf_action_discarded
10833 #define elf_backend_init_index_section _bfd_elf_init_1_index_section
10834 #define elf_backend_lookup_section_flags_hook ppc_elf_lookup_section_flags
10835 #define elf_backend_section_processing ppc_elf_section_processing
10836
10837 #include "elf32-target.h"
10838
10839 /* FreeBSD Target */
10840
10841 #undef TARGET_LITTLE_SYM
10842 #undef TARGET_LITTLE_NAME
10843
10844 #undef TARGET_BIG_SYM
10845 #define TARGET_BIG_SYM powerpc_elf32_fbsd_vec
10846 #undef TARGET_BIG_NAME
10847 #define TARGET_BIG_NAME "elf32-powerpc-freebsd"
10848
10849 #undef ELF_OSABI
10850 #define ELF_OSABI ELFOSABI_FREEBSD
10851
10852 #undef elf32_bed
10853 #define elf32_bed elf32_powerpc_fbsd_bed
10854
10855 #include "elf32-target.h"
10856
10857 /* VxWorks Target */
10858
10859 #undef TARGET_LITTLE_SYM
10860 #undef TARGET_LITTLE_NAME
10861
10862 #undef TARGET_BIG_SYM
10863 #define TARGET_BIG_SYM powerpc_elf32_vxworks_vec
10864 #undef TARGET_BIG_NAME
10865 #define TARGET_BIG_NAME "elf32-powerpc-vxworks"
10866
10867 #undef ELF_OSABI
10868
10869 /* VxWorks uses the elf default section flags for .plt. */
10870 static const struct bfd_elf_special_section *
10871 ppc_elf_vxworks_get_sec_type_attr (bfd *abfd ATTRIBUTE_UNUSED, asection *sec)
10872 {
10873 if (sec->name == NULL)
10874 return NULL;
10875
10876 if (strcmp (sec->name, ".plt") == 0)
10877 return _bfd_elf_get_sec_type_attr (abfd, sec);
10878
10879 return ppc_elf_get_sec_type_attr (abfd, sec);
10880 }
10881
10882 /* Like ppc_elf_link_hash_table_create, but overrides
10883 appropriately for VxWorks. */
10884 static struct bfd_link_hash_table *
10885 ppc_elf_vxworks_link_hash_table_create (bfd *abfd)
10886 {
10887 struct bfd_link_hash_table *ret;
10888
10889 ret = ppc_elf_link_hash_table_create (abfd);
10890 if (ret)
10891 {
10892 struct ppc_elf_link_hash_table *htab
10893 = (struct ppc_elf_link_hash_table *)ret;
10894 htab->is_vxworks = 1;
10895 htab->plt_type = PLT_VXWORKS;
10896 htab->plt_entry_size = VXWORKS_PLT_ENTRY_SIZE;
10897 htab->plt_slot_size = VXWORKS_PLT_ENTRY_SIZE;
10898 htab->plt_initial_entry_size = VXWORKS_PLT_INITIAL_ENTRY_SIZE;
10899 }
10900 return ret;
10901 }
10902
10903 /* Tweak magic VxWorks symbols as they are loaded. */
10904 static bfd_boolean
10905 ppc_elf_vxworks_add_symbol_hook (bfd *abfd,
10906 struct bfd_link_info *info,
10907 Elf_Internal_Sym *sym,
10908 const char **namep ATTRIBUTE_UNUSED,
10909 flagword *flagsp ATTRIBUTE_UNUSED,
10910 asection **secp,
10911 bfd_vma *valp)
10912 {
10913 if (!elf_vxworks_add_symbol_hook(abfd, info, sym,namep, flagsp, secp,
10914 valp))
10915 return FALSE;
10916
10917 return ppc_elf_add_symbol_hook(abfd, info, sym,namep, flagsp, secp, valp);
10918 }
10919
10920 static void
10921 ppc_elf_vxworks_final_write_processing (bfd *abfd, bfd_boolean linker)
10922 {
10923 ppc_elf_final_write_processing(abfd, linker);
10924 elf_vxworks_final_write_processing(abfd, linker);
10925 }
10926
10927 /* On VxWorks, we emit relocations against _PROCEDURE_LINKAGE_TABLE_, so
10928 define it. */
10929 #undef elf_backend_want_plt_sym
10930 #define elf_backend_want_plt_sym 1
10931 #undef elf_backend_want_got_plt
10932 #define elf_backend_want_got_plt 1
10933 #undef elf_backend_got_symbol_offset
10934 #define elf_backend_got_symbol_offset 0
10935 #undef elf_backend_plt_not_loaded
10936 #define elf_backend_plt_not_loaded 0
10937 #undef elf_backend_plt_readonly
10938 #define elf_backend_plt_readonly 1
10939 #undef elf_backend_got_header_size
10940 #define elf_backend_got_header_size 12
10941
10942 #undef bfd_elf32_get_synthetic_symtab
10943
10944 #undef bfd_elf32_bfd_link_hash_table_create
10945 #define bfd_elf32_bfd_link_hash_table_create \
10946 ppc_elf_vxworks_link_hash_table_create
10947 #undef elf_backend_add_symbol_hook
10948 #define elf_backend_add_symbol_hook \
10949 ppc_elf_vxworks_add_symbol_hook
10950 #undef elf_backend_link_output_symbol_hook
10951 #define elf_backend_link_output_symbol_hook \
10952 elf_vxworks_link_output_symbol_hook
10953 #undef elf_backend_final_write_processing
10954 #define elf_backend_final_write_processing \
10955 ppc_elf_vxworks_final_write_processing
10956 #undef elf_backend_get_sec_type_attr
10957 #define elf_backend_get_sec_type_attr \
10958 ppc_elf_vxworks_get_sec_type_attr
10959 #undef elf_backend_emit_relocs
10960 #define elf_backend_emit_relocs \
10961 elf_vxworks_emit_relocs
10962
10963 #undef elf32_bed
10964 #define elf32_bed ppc_elf_vxworks_bed
10965 #undef elf_backend_post_process_headers
10966
10967 #include "elf32-target.h"
GDB Binutils - Deliverables
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