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1/* PowerPC-specific support for 32-bit ELF
2 Copyright (C) 1994-2017 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#include "opcode/ppc.h"
39
40typedef enum split16_format_type
41{
42 split16a_type = 0,
43 split16d_type
44}
45split16_format_type;
46
47/* RELA relocations are used here. */
48
49static bfd_reloc_status_type ppc_elf_addr16_ha_reloc
50 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
51static bfd_reloc_status_type ppc_elf_unhandled_reloc
52 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
53
54/* Branch prediction bit for branch taken relocs. */
55#define BRANCH_PREDICT_BIT 0x200000
56/* Mask to set RA in memory instructions. */
57#define RA_REGISTER_MASK 0x001f0000
58/* Value to shift register by to insert RA. */
59#define RA_REGISTER_SHIFT 16
60
61/* The name of the dynamic interpreter. This is put in the .interp
62 section. */
63#define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
64
65/* For old-style PLT. */
66/* The number of single-slot PLT entries (the rest use two slots). */
67#define PLT_NUM_SINGLE_ENTRIES 8192
68
69/* For new-style .glink and .plt. */
70#define GLINK_PLTRESOLVE 16*4
71#define GLINK_ENTRY_SIZE 4*4
72#define TLS_GET_ADDR_GLINK_SIZE 12*4
73
74/* VxWorks uses its own plt layout, filled in by the static linker. */
75
76/* The standard VxWorks PLT entry. */
77#define VXWORKS_PLT_ENTRY_SIZE 32
78static const bfd_vma ppc_elf_vxworks_plt_entry
79 [VXWORKS_PLT_ENTRY_SIZE / 4] =
80 {
81 0x3d800000, /* lis r12,0 */
82 0x818c0000, /* lwz r12,0(r12) */
83 0x7d8903a6, /* mtctr r12 */
84 0x4e800420, /* bctr */
85 0x39600000, /* li r11,0 */
86 0x48000000, /* b 14 <.PLT0resolve+0x4> */
87 0x60000000, /* nop */
88 0x60000000, /* nop */
89 };
90static const bfd_vma ppc_elf_vxworks_pic_plt_entry
91 [VXWORKS_PLT_ENTRY_SIZE / 4] =
92 {
93 0x3d9e0000, /* addis r12,r30,0 */
94 0x818c0000, /* lwz r12,0(r12) */
95 0x7d8903a6, /* mtctr r12 */
96 0x4e800420, /* bctr */
97 0x39600000, /* li r11,0 */
98 0x48000000, /* b 14 <.PLT0resolve+0x4> 14: R_PPC_REL24 .PLTresolve */
99 0x60000000, /* nop */
100 0x60000000, /* nop */
101 };
102
103/* The initial VxWorks PLT entry. */
104#define VXWORKS_PLT_INITIAL_ENTRY_SIZE 32
105static const bfd_vma ppc_elf_vxworks_plt0_entry
106 [VXWORKS_PLT_INITIAL_ENTRY_SIZE / 4] =
107 {
108 0x3d800000, /* lis r12,0 */
109 0x398c0000, /* addi r12,r12,0 */
110 0x800c0008, /* lwz r0,8(r12) */
111 0x7c0903a6, /* mtctr r0 */
112 0x818c0004, /* lwz r12,4(r12) */
113 0x4e800420, /* bctr */
114 0x60000000, /* nop */
115 0x60000000, /* nop */
116 };
117static const bfd_vma ppc_elf_vxworks_pic_plt0_entry
118 [VXWORKS_PLT_INITIAL_ENTRY_SIZE / 4] =
119 {
120 0x819e0008, /* lwz r12,8(r30) */
121 0x7d8903a6, /* mtctr r12 */
122 0x819e0004, /* lwz r12,4(r30) */
123 0x4e800420, /* bctr */
124 0x60000000, /* nop */
125 0x60000000, /* nop */
126 0x60000000, /* nop */
127 0x60000000, /* nop */
128 };
129
130/* For executables, we have some additional relocations in
131 .rela.plt.unloaded, for the kernel loader. */
132
133/* The number of non-JMP_SLOT relocations per PLT0 slot. */
134#define VXWORKS_PLT_NON_JMP_SLOT_RELOCS 3
135/* The number of relocations in the PLTResolve slot. */
136#define VXWORKS_PLTRESOLVE_RELOCS 2
137/* The number of relocations in the PLTResolve slot when when creating
138 a shared library. */
139#define VXWORKS_PLTRESOLVE_RELOCS_SHLIB 0
140
141/* Some instructions. */
142#define ADDIS_11_11 0x3d6b0000
143#define ADDIS_11_30 0x3d7e0000
144#define ADDIS_12_12 0x3d8c0000
145#define ADDI_11_11 0x396b0000
146#define ADD_0_11_11 0x7c0b5a14
147#define ADD_3_12_2 0x7c6c1214
148#define ADD_11_0_11 0x7d605a14
149#define B 0x48000000
150#define BA 0x48000002
151#define BCL_20_31 0x429f0005
152#define BCTR 0x4e800420
153#define BEQLR 0x4d820020
154#define CMPWI_11_0 0x2c0b0000
155#define LIS_11 0x3d600000
156#define LIS_12 0x3d800000
157#define LWZU_0_12 0x840c0000
158#define LWZ_0_12 0x800c0000
159#define LWZ_11_3 0x81630000
160#define LWZ_11_11 0x816b0000
161#define LWZ_11_30 0x817e0000
162#define LWZ_12_3 0x81830000
163#define LWZ_12_12 0x818c0000
164#define MR_0_3 0x7c601b78
165#define MR_3_0 0x7c030378
166#define MFLR_0 0x7c0802a6
167#define MFLR_12 0x7d8802a6
168#define MTCTR_0 0x7c0903a6
169#define MTCTR_11 0x7d6903a6
170#define MTLR_0 0x7c0803a6
171#define NOP 0x60000000
172#define SUB_11_11_12 0x7d6c5850
173
174/* Offset of tp and dtp pointers from start of TLS block. */
175#define TP_OFFSET 0x7000
176#define DTP_OFFSET 0x8000
177
178/* The value of a defined global symbol. */
179#define SYM_VAL(SYM) \
180 ((SYM)->root.u.def.section->output_section->vma \
181 + (SYM)->root.u.def.section->output_offset \
182 + (SYM)->root.u.def.value)
183\f
184static reloc_howto_type *ppc_elf_howto_table[R_PPC_max];
185
186static reloc_howto_type ppc_elf_howto_raw[] = {
187 /* This reloc does nothing. */
188 HOWTO (R_PPC_NONE, /* type */
189 0, /* rightshift */
190 3, /* size (0 = byte, 1 = short, 2 = long) */
191 0, /* bitsize */
192 FALSE, /* pc_relative */
193 0, /* bitpos */
194 complain_overflow_dont, /* complain_on_overflow */
195 bfd_elf_generic_reloc, /* special_function */
196 "R_PPC_NONE", /* name */
197 FALSE, /* partial_inplace */
198 0, /* src_mask */
199 0, /* dst_mask */
200 FALSE), /* pcrel_offset */
201
202 /* A standard 32 bit relocation. */
203 HOWTO (R_PPC_ADDR32, /* type */
204 0, /* rightshift */
205 2, /* size (0 = byte, 1 = short, 2 = long) */
206 32, /* bitsize */
207 FALSE, /* pc_relative */
208 0, /* bitpos */
209 complain_overflow_dont, /* complain_on_overflow */
210 bfd_elf_generic_reloc, /* special_function */
211 "R_PPC_ADDR32", /* name */
212 FALSE, /* partial_inplace */
213 0, /* src_mask */
214 0xffffffff, /* dst_mask */
215 FALSE), /* pcrel_offset */
216
217 /* An absolute 26 bit branch; the lower two bits must be zero.
218 FIXME: we don't check that, we just clear them. */
219 HOWTO (R_PPC_ADDR24, /* type */
220 0, /* rightshift */
221 2, /* size (0 = byte, 1 = short, 2 = long) */
222 26, /* bitsize */
223 FALSE, /* pc_relative */
224 0, /* bitpos */
225 complain_overflow_signed, /* complain_on_overflow */
226 bfd_elf_generic_reloc, /* special_function */
227 "R_PPC_ADDR24", /* name */
228 FALSE, /* partial_inplace */
229 0, /* src_mask */
230 0x3fffffc, /* dst_mask */
231 FALSE), /* pcrel_offset */
232
233 /* A standard 16 bit relocation. */
234 HOWTO (R_PPC_ADDR16, /* type */
235 0, /* rightshift */
236 1, /* size (0 = byte, 1 = short, 2 = long) */
237 16, /* bitsize */
238 FALSE, /* pc_relative */
239 0, /* bitpos */
240 complain_overflow_bitfield, /* complain_on_overflow */
241 bfd_elf_generic_reloc, /* special_function */
242 "R_PPC_ADDR16", /* name */
243 FALSE, /* partial_inplace */
244 0, /* src_mask */
245 0xffff, /* dst_mask */
246 FALSE), /* pcrel_offset */
247
248 /* A 16 bit relocation without overflow. */
249 HOWTO (R_PPC_ADDR16_LO, /* type */
250 0, /* rightshift */
251 1, /* size (0 = byte, 1 = short, 2 = long) */
252 16, /* bitsize */
253 FALSE, /* pc_relative */
254 0, /* bitpos */
255 complain_overflow_dont,/* complain_on_overflow */
256 bfd_elf_generic_reloc, /* special_function */
257 "R_PPC_ADDR16_LO", /* name */
258 FALSE, /* partial_inplace */
259 0, /* src_mask */
260 0xffff, /* dst_mask */
261 FALSE), /* pcrel_offset */
262
263 /* The high order 16 bits of an address. */
264 HOWTO (R_PPC_ADDR16_HI, /* type */
265 16, /* rightshift */
266 1, /* size (0 = byte, 1 = short, 2 = long) */
267 16, /* bitsize */
268 FALSE, /* pc_relative */
269 0, /* bitpos */
270 complain_overflow_dont, /* complain_on_overflow */
271 bfd_elf_generic_reloc, /* special_function */
272 "R_PPC_ADDR16_HI", /* name */
273 FALSE, /* partial_inplace */
274 0, /* src_mask */
275 0xffff, /* dst_mask */
276 FALSE), /* pcrel_offset */
277
278 /* The high order 16 bits of an address, plus 1 if the contents of
279 the low 16 bits, treated as a signed number, is negative. */
280 HOWTO (R_PPC_ADDR16_HA, /* type */
281 16, /* rightshift */
282 1, /* size (0 = byte, 1 = short, 2 = long) */
283 16, /* bitsize */
284 FALSE, /* pc_relative */
285 0, /* bitpos */
286 complain_overflow_dont, /* complain_on_overflow */
287 ppc_elf_addr16_ha_reloc, /* special_function */
288 "R_PPC_ADDR16_HA", /* name */
289 FALSE, /* partial_inplace */
290 0, /* src_mask */
291 0xffff, /* dst_mask */
292 FALSE), /* pcrel_offset */
293
294 /* An absolute 16 bit branch; the lower two bits must be zero.
295 FIXME: we don't check that, we just clear them. */
296 HOWTO (R_PPC_ADDR14, /* type */
297 0, /* rightshift */
298 2, /* size (0 = byte, 1 = short, 2 = long) */
299 16, /* bitsize */
300 FALSE, /* pc_relative */
301 0, /* bitpos */
302 complain_overflow_signed, /* complain_on_overflow */
303 bfd_elf_generic_reloc, /* special_function */
304 "R_PPC_ADDR14", /* name */
305 FALSE, /* partial_inplace */
306 0, /* src_mask */
307 0xfffc, /* dst_mask */
308 FALSE), /* pcrel_offset */
309
310 /* An absolute 16 bit branch, for which bit 10 should be set to
311 indicate that the branch is expected to be taken. The lower two
312 bits must be zero. */
313 HOWTO (R_PPC_ADDR14_BRTAKEN, /* type */
314 0, /* rightshift */
315 2, /* size (0 = byte, 1 = short, 2 = long) */
316 16, /* bitsize */
317 FALSE, /* pc_relative */
318 0, /* bitpos */
319 complain_overflow_signed, /* complain_on_overflow */
320 bfd_elf_generic_reloc, /* special_function */
321 "R_PPC_ADDR14_BRTAKEN",/* name */
322 FALSE, /* partial_inplace */
323 0, /* src_mask */
324 0xfffc, /* dst_mask */
325 FALSE), /* pcrel_offset */
326
327 /* An absolute 16 bit branch, for which bit 10 should be set to
328 indicate that the branch is not expected to be taken. The lower
329 two bits must be zero. */
330 HOWTO (R_PPC_ADDR14_BRNTAKEN, /* type */
331 0, /* rightshift */
332 2, /* size (0 = byte, 1 = short, 2 = long) */
333 16, /* bitsize */
334 FALSE, /* pc_relative */
335 0, /* bitpos */
336 complain_overflow_signed, /* complain_on_overflow */
337 bfd_elf_generic_reloc, /* special_function */
338 "R_PPC_ADDR14_BRNTAKEN",/* name */
339 FALSE, /* partial_inplace */
340 0, /* src_mask */
341 0xfffc, /* dst_mask */
342 FALSE), /* pcrel_offset */
343
344 /* A relative 26 bit branch; the lower two bits must be zero. */
345 HOWTO (R_PPC_REL24, /* type */
346 0, /* rightshift */
347 2, /* size (0 = byte, 1 = short, 2 = long) */
348 26, /* bitsize */
349 TRUE, /* pc_relative */
350 0, /* bitpos */
351 complain_overflow_signed, /* complain_on_overflow */
352 bfd_elf_generic_reloc, /* special_function */
353 "R_PPC_REL24", /* name */
354 FALSE, /* partial_inplace */
355 0, /* src_mask */
356 0x3fffffc, /* dst_mask */
357 TRUE), /* pcrel_offset */
358
359 /* A relative 16 bit branch; the lower two bits must be zero. */
360 HOWTO (R_PPC_REL14, /* type */
361 0, /* rightshift */
362 2, /* size (0 = byte, 1 = short, 2 = long) */
363 16, /* bitsize */
364 TRUE, /* pc_relative */
365 0, /* bitpos */
366 complain_overflow_signed, /* complain_on_overflow */
367 bfd_elf_generic_reloc, /* special_function */
368 "R_PPC_REL14", /* name */
369 FALSE, /* partial_inplace */
370 0, /* src_mask */
371 0xfffc, /* dst_mask */
372 TRUE), /* pcrel_offset */
373
374 /* A relative 16 bit branch. Bit 10 should be set to indicate that
375 the branch is expected to be taken. The lower two bits must be
376 zero. */
377 HOWTO (R_PPC_REL14_BRTAKEN, /* type */
378 0, /* rightshift */
379 2, /* size (0 = byte, 1 = short, 2 = long) */
380 16, /* bitsize */
381 TRUE, /* pc_relative */
382 0, /* bitpos */
383 complain_overflow_signed, /* complain_on_overflow */
384 bfd_elf_generic_reloc, /* special_function */
385 "R_PPC_REL14_BRTAKEN", /* name */
386 FALSE, /* partial_inplace */
387 0, /* src_mask */
388 0xfffc, /* dst_mask */
389 TRUE), /* pcrel_offset */
390
391 /* A relative 16 bit branch. Bit 10 should be set to indicate that
392 the branch is not expected to be taken. The lower two bits must
393 be zero. */
394 HOWTO (R_PPC_REL14_BRNTAKEN, /* type */
395 0, /* rightshift */
396 2, /* size (0 = byte, 1 = short, 2 = long) */
397 16, /* bitsize */
398 TRUE, /* pc_relative */
399 0, /* bitpos */
400 complain_overflow_signed, /* complain_on_overflow */
401 bfd_elf_generic_reloc, /* special_function */
402 "R_PPC_REL14_BRNTAKEN",/* name */
403 FALSE, /* partial_inplace */
404 0, /* src_mask */
405 0xfffc, /* dst_mask */
406 TRUE), /* pcrel_offset */
407
408 /* Like R_PPC_ADDR16, but referring to the GOT table entry for the
409 symbol. */
410 HOWTO (R_PPC_GOT16, /* type */
411 0, /* rightshift */
412 1, /* size (0 = byte, 1 = short, 2 = long) */
413 16, /* bitsize */
414 FALSE, /* pc_relative */
415 0, /* bitpos */
416 complain_overflow_signed, /* complain_on_overflow */
417 ppc_elf_unhandled_reloc, /* special_function */
418 "R_PPC_GOT16", /* name */
419 FALSE, /* partial_inplace */
420 0, /* src_mask */
421 0xffff, /* dst_mask */
422 FALSE), /* pcrel_offset */
423
424 /* Like R_PPC_ADDR16_LO, but referring to the GOT table entry for
425 the symbol. */
426 HOWTO (R_PPC_GOT16_LO, /* type */
427 0, /* rightshift */
428 1, /* size (0 = byte, 1 = short, 2 = long) */
429 16, /* bitsize */
430 FALSE, /* pc_relative */
431 0, /* bitpos */
432 complain_overflow_dont, /* complain_on_overflow */
433 ppc_elf_unhandled_reloc, /* special_function */
434 "R_PPC_GOT16_LO", /* name */
435 FALSE, /* partial_inplace */
436 0, /* src_mask */
437 0xffff, /* dst_mask */
438 FALSE), /* pcrel_offset */
439
440 /* Like R_PPC_ADDR16_HI, but referring to the GOT table entry for
441 the symbol. */
442 HOWTO (R_PPC_GOT16_HI, /* type */
443 16, /* rightshift */
444 1, /* size (0 = byte, 1 = short, 2 = long) */
445 16, /* bitsize */
446 FALSE, /* pc_relative */
447 0, /* bitpos */
448 complain_overflow_dont, /* complain_on_overflow */
449 ppc_elf_unhandled_reloc, /* special_function */
450 "R_PPC_GOT16_HI", /* name */
451 FALSE, /* partial_inplace */
452 0, /* src_mask */
453 0xffff, /* dst_mask */
454 FALSE), /* pcrel_offset */
455
456 /* Like R_PPC_ADDR16_HA, but referring to the GOT table entry for
457 the symbol. */
458 HOWTO (R_PPC_GOT16_HA, /* type */
459 16, /* rightshift */
460 1, /* size (0 = byte, 1 = short, 2 = long) */
461 16, /* bitsize */
462 FALSE, /* pc_relative */
463 0, /* bitpos */
464 complain_overflow_dont, /* complain_on_overflow */
465 ppc_elf_unhandled_reloc, /* special_function */
466 "R_PPC_GOT16_HA", /* name */
467 FALSE, /* partial_inplace */
468 0, /* src_mask */
469 0xffff, /* dst_mask */
470 FALSE), /* pcrel_offset */
471
472 /* Like R_PPC_REL24, but referring to the procedure linkage table
473 entry for the symbol. */
474 HOWTO (R_PPC_PLTREL24, /* type */
475 0, /* rightshift */
476 2, /* size (0 = byte, 1 = short, 2 = long) */
477 26, /* bitsize */
478 TRUE, /* pc_relative */
479 0, /* bitpos */
480 complain_overflow_signed, /* complain_on_overflow */
481 ppc_elf_unhandled_reloc, /* special_function */
482 "R_PPC_PLTREL24", /* name */
483 FALSE, /* partial_inplace */
484 0, /* src_mask */
485 0x3fffffc, /* dst_mask */
486 TRUE), /* pcrel_offset */
487
488 /* This is used only by the dynamic linker. The symbol should exist
489 both in the object being run and in some shared library. The
490 dynamic linker copies the data addressed by the symbol from the
491 shared library into the object, because the object being
492 run has to have the data at some particular address. */
493 HOWTO (R_PPC_COPY, /* type */
494 0, /* rightshift */
495 2, /* size (0 = byte, 1 = short, 2 = long) */
496 32, /* bitsize */
497 FALSE, /* pc_relative */
498 0, /* bitpos */
499 complain_overflow_dont, /* complain_on_overflow */
500 ppc_elf_unhandled_reloc, /* special_function */
501 "R_PPC_COPY", /* name */
502 FALSE, /* partial_inplace */
503 0, /* src_mask */
504 0, /* dst_mask */
505 FALSE), /* pcrel_offset */
506
507 /* Like R_PPC_ADDR32, but used when setting global offset table
508 entries. */
509 HOWTO (R_PPC_GLOB_DAT, /* type */
510 0, /* rightshift */
511 2, /* size (0 = byte, 1 = short, 2 = long) */
512 32, /* bitsize */
513 FALSE, /* pc_relative */
514 0, /* bitpos */
515 complain_overflow_dont, /* complain_on_overflow */
516 ppc_elf_unhandled_reloc, /* special_function */
517 "R_PPC_GLOB_DAT", /* name */
518 FALSE, /* partial_inplace */
519 0, /* src_mask */
520 0xffffffff, /* dst_mask */
521 FALSE), /* pcrel_offset */
522
523 /* Marks a procedure linkage table entry for a symbol. */
524 HOWTO (R_PPC_JMP_SLOT, /* type */
525 0, /* rightshift */
526 2, /* size (0 = byte, 1 = short, 2 = long) */
527 32, /* bitsize */
528 FALSE, /* pc_relative */
529 0, /* bitpos */
530 complain_overflow_dont, /* complain_on_overflow */
531 ppc_elf_unhandled_reloc, /* special_function */
532 "R_PPC_JMP_SLOT", /* name */
533 FALSE, /* partial_inplace */
534 0, /* src_mask */
535 0, /* dst_mask */
536 FALSE), /* pcrel_offset */
537
538 /* Used only by the dynamic linker. When the object is run, this
539 longword is set to the load address of the object, plus the
540 addend. */
541 HOWTO (R_PPC_RELATIVE, /* type */
542 0, /* rightshift */
543 2, /* size (0 = byte, 1 = short, 2 = long) */
544 32, /* bitsize */
545 FALSE, /* pc_relative */
546 0, /* bitpos */
547 complain_overflow_dont, /* complain_on_overflow */
548 bfd_elf_generic_reloc, /* special_function */
549 "R_PPC_RELATIVE", /* name */
550 FALSE, /* partial_inplace */
551 0, /* src_mask */
552 0xffffffff, /* dst_mask */
553 FALSE), /* pcrel_offset */
554
555 /* Like R_PPC_REL24, but uses the value of the symbol within the
556 object rather than the final value. Normally used for
557 _GLOBAL_OFFSET_TABLE_. */
558 HOWTO (R_PPC_LOCAL24PC, /* type */
559 0, /* rightshift */
560 2, /* size (0 = byte, 1 = short, 2 = long) */
561 26, /* bitsize */
562 TRUE, /* pc_relative */
563 0, /* bitpos */
564 complain_overflow_signed, /* complain_on_overflow */
565 bfd_elf_generic_reloc, /* special_function */
566 "R_PPC_LOCAL24PC", /* name */
567 FALSE, /* partial_inplace */
568 0, /* src_mask */
569 0x3fffffc, /* dst_mask */
570 TRUE), /* pcrel_offset */
571
572 /* Like R_PPC_ADDR32, but may be unaligned. */
573 HOWTO (R_PPC_UADDR32, /* type */
574 0, /* rightshift */
575 2, /* size (0 = byte, 1 = short, 2 = long) */
576 32, /* bitsize */
577 FALSE, /* pc_relative */
578 0, /* bitpos */
579 complain_overflow_dont, /* complain_on_overflow */
580 bfd_elf_generic_reloc, /* special_function */
581 "R_PPC_UADDR32", /* name */
582 FALSE, /* partial_inplace */
583 0, /* src_mask */
584 0xffffffff, /* dst_mask */
585 FALSE), /* pcrel_offset */
586
587 /* Like R_PPC_ADDR16, but may be unaligned. */
588 HOWTO (R_PPC_UADDR16, /* type */
589 0, /* rightshift */
590 1, /* size (0 = byte, 1 = short, 2 = long) */
591 16, /* bitsize */
592 FALSE, /* pc_relative */
593 0, /* bitpos */
594 complain_overflow_bitfield, /* complain_on_overflow */
595 bfd_elf_generic_reloc, /* special_function */
596 "R_PPC_UADDR16", /* name */
597 FALSE, /* partial_inplace */
598 0, /* src_mask */
599 0xffff, /* dst_mask */
600 FALSE), /* pcrel_offset */
601
602 /* 32-bit PC relative */
603 HOWTO (R_PPC_REL32, /* type */
604 0, /* rightshift */
605 2, /* size (0 = byte, 1 = short, 2 = long) */
606 32, /* bitsize */
607 TRUE, /* pc_relative */
608 0, /* bitpos */
609 complain_overflow_dont, /* complain_on_overflow */
610 bfd_elf_generic_reloc, /* special_function */
611 "R_PPC_REL32", /* name */
612 FALSE, /* partial_inplace */
613 0, /* src_mask */
614 0xffffffff, /* dst_mask */
615 TRUE), /* pcrel_offset */
616
617 /* 32-bit relocation to the symbol's procedure linkage table.
618 FIXME: not supported. */
619 HOWTO (R_PPC_PLT32, /* type */
620 0, /* rightshift */
621 2, /* size (0 = byte, 1 = short, 2 = long) */
622 32, /* bitsize */
623 FALSE, /* pc_relative */
624 0, /* bitpos */
625 complain_overflow_dont, /* complain_on_overflow */
626 ppc_elf_unhandled_reloc, /* special_function */
627 "R_PPC_PLT32", /* name */
628 FALSE, /* partial_inplace */
629 0, /* src_mask */
630 0, /* dst_mask */
631 FALSE), /* pcrel_offset */
632
633 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
634 FIXME: not supported. */
635 HOWTO (R_PPC_PLTREL32, /* type */
636 0, /* rightshift */
637 2, /* size (0 = byte, 1 = short, 2 = long) */
638 32, /* bitsize */
639 TRUE, /* pc_relative */
640 0, /* bitpos */
641 complain_overflow_dont, /* complain_on_overflow */
642 ppc_elf_unhandled_reloc, /* special_function */
643 "R_PPC_PLTREL32", /* name */
644 FALSE, /* partial_inplace */
645 0, /* src_mask */
646 0, /* dst_mask */
647 TRUE), /* pcrel_offset */
648
649 /* Like R_PPC_ADDR16_LO, but referring to the PLT table entry for
650 the symbol. */
651 HOWTO (R_PPC_PLT16_LO, /* type */
652 0, /* rightshift */
653 1, /* size (0 = byte, 1 = short, 2 = long) */
654 16, /* bitsize */
655 FALSE, /* pc_relative */
656 0, /* bitpos */
657 complain_overflow_dont, /* complain_on_overflow */
658 ppc_elf_unhandled_reloc, /* special_function */
659 "R_PPC_PLT16_LO", /* name */
660 FALSE, /* partial_inplace */
661 0, /* src_mask */
662 0xffff, /* dst_mask */
663 FALSE), /* pcrel_offset */
664
665 /* Like R_PPC_ADDR16_HI, but referring to the PLT table entry for
666 the symbol. */
667 HOWTO (R_PPC_PLT16_HI, /* type */
668 16, /* rightshift */
669 1, /* size (0 = byte, 1 = short, 2 = long) */
670 16, /* bitsize */
671 FALSE, /* pc_relative */
672 0, /* bitpos */
673 complain_overflow_dont, /* complain_on_overflow */
674 ppc_elf_unhandled_reloc, /* special_function */
675 "R_PPC_PLT16_HI", /* name */
676 FALSE, /* partial_inplace */
677 0, /* src_mask */
678 0xffff, /* dst_mask */
679 FALSE), /* pcrel_offset */
680
681 /* Like R_PPC_ADDR16_HA, but referring to the PLT table entry for
682 the symbol. */
683 HOWTO (R_PPC_PLT16_HA, /* type */
684 16, /* rightshift */
685 1, /* size (0 = byte, 1 = short, 2 = long) */
686 16, /* bitsize */
687 FALSE, /* pc_relative */
688 0, /* bitpos */
689 complain_overflow_dont, /* complain_on_overflow */
690 ppc_elf_unhandled_reloc, /* special_function */
691 "R_PPC_PLT16_HA", /* name */
692 FALSE, /* partial_inplace */
693 0, /* src_mask */
694 0xffff, /* dst_mask */
695 FALSE), /* pcrel_offset */
696
697 /* A sign-extended 16 bit value relative to _SDA_BASE_, for use with
698 small data items. */
699 HOWTO (R_PPC_SDAREL16, /* type */
700 0, /* rightshift */
701 1, /* size (0 = byte, 1 = short, 2 = long) */
702 16, /* bitsize */
703 FALSE, /* pc_relative */
704 0, /* bitpos */
705 complain_overflow_signed, /* complain_on_overflow */
706 ppc_elf_unhandled_reloc, /* special_function */
707 "R_PPC_SDAREL16", /* name */
708 FALSE, /* partial_inplace */
709 0, /* src_mask */
710 0xffff, /* dst_mask */
711 FALSE), /* pcrel_offset */
712
713 /* 16-bit section relative relocation. */
714 HOWTO (R_PPC_SECTOFF, /* type */
715 0, /* rightshift */
716 1, /* size (0 = byte, 1 = short, 2 = long) */
717 16, /* bitsize */
718 FALSE, /* pc_relative */
719 0, /* bitpos */
720 complain_overflow_signed, /* complain_on_overflow */
721 ppc_elf_unhandled_reloc, /* special_function */
722 "R_PPC_SECTOFF", /* name */
723 FALSE, /* partial_inplace */
724 0, /* src_mask */
725 0xffff, /* dst_mask */
726 FALSE), /* pcrel_offset */
727
728 /* 16-bit lower half section relative relocation. */
729 HOWTO (R_PPC_SECTOFF_LO, /* type */
730 0, /* rightshift */
731 1, /* size (0 = byte, 1 = short, 2 = long) */
732 16, /* bitsize */
733 FALSE, /* pc_relative */
734 0, /* bitpos */
735 complain_overflow_dont, /* complain_on_overflow */
736 ppc_elf_unhandled_reloc, /* special_function */
737 "R_PPC_SECTOFF_LO", /* name */
738 FALSE, /* partial_inplace */
739 0, /* src_mask */
740 0xffff, /* dst_mask */
741 FALSE), /* pcrel_offset */
742
743 /* 16-bit upper half section relative relocation. */
744 HOWTO (R_PPC_SECTOFF_HI, /* type */
745 16, /* rightshift */
746 1, /* size (0 = byte, 1 = short, 2 = long) */
747 16, /* bitsize */
748 FALSE, /* pc_relative */
749 0, /* bitpos */
750 complain_overflow_dont, /* complain_on_overflow */
751 ppc_elf_unhandled_reloc, /* special_function */
752 "R_PPC_SECTOFF_HI", /* name */
753 FALSE, /* partial_inplace */
754 0, /* src_mask */
755 0xffff, /* dst_mask */
756 FALSE), /* pcrel_offset */
757
758 /* 16-bit upper half adjusted section relative relocation. */
759 HOWTO (R_PPC_SECTOFF_HA, /* type */
760 16, /* rightshift */
761 1, /* size (0 = byte, 1 = short, 2 = long) */
762 16, /* bitsize */
763 FALSE, /* pc_relative */
764 0, /* bitpos */
765 complain_overflow_dont, /* complain_on_overflow */
766 ppc_elf_unhandled_reloc, /* special_function */
767 "R_PPC_SECTOFF_HA", /* name */
768 FALSE, /* partial_inplace */
769 0, /* src_mask */
770 0xffff, /* dst_mask */
771 FALSE), /* pcrel_offset */
772
773 /* Marker relocs for TLS. */
774 HOWTO (R_PPC_TLS,
775 0, /* rightshift */
776 2, /* size (0 = byte, 1 = short, 2 = long) */
777 32, /* bitsize */
778 FALSE, /* pc_relative */
779 0, /* bitpos */
780 complain_overflow_dont, /* complain_on_overflow */
781 bfd_elf_generic_reloc, /* special_function */
782 "R_PPC_TLS", /* name */
783 FALSE, /* partial_inplace */
784 0, /* src_mask */
785 0, /* dst_mask */
786 FALSE), /* pcrel_offset */
787
788 HOWTO (R_PPC_TLSGD,
789 0, /* rightshift */
790 2, /* size (0 = byte, 1 = short, 2 = long) */
791 32, /* bitsize */
792 FALSE, /* pc_relative */
793 0, /* bitpos */
794 complain_overflow_dont, /* complain_on_overflow */
795 bfd_elf_generic_reloc, /* special_function */
796 "R_PPC_TLSGD", /* name */
797 FALSE, /* partial_inplace */
798 0, /* src_mask */
799 0, /* dst_mask */
800 FALSE), /* pcrel_offset */
801
802 HOWTO (R_PPC_TLSLD,
803 0, /* rightshift */
804 2, /* size (0 = byte, 1 = short, 2 = long) */
805 32, /* bitsize */
806 FALSE, /* pc_relative */
807 0, /* bitpos */
808 complain_overflow_dont, /* complain_on_overflow */
809 bfd_elf_generic_reloc, /* special_function */
810 "R_PPC_TLSLD", /* name */
811 FALSE, /* partial_inplace */
812 0, /* src_mask */
813 0, /* dst_mask */
814 FALSE), /* pcrel_offset */
815
816 /* Computes the load module index of the load module that contains the
817 definition of its TLS sym. */
818 HOWTO (R_PPC_DTPMOD32,
819 0, /* rightshift */
820 2, /* size (0 = byte, 1 = short, 2 = long) */
821 32, /* bitsize */
822 FALSE, /* pc_relative */
823 0, /* bitpos */
824 complain_overflow_dont, /* complain_on_overflow */
825 ppc_elf_unhandled_reloc, /* special_function */
826 "R_PPC_DTPMOD32", /* name */
827 FALSE, /* partial_inplace */
828 0, /* src_mask */
829 0xffffffff, /* dst_mask */
830 FALSE), /* pcrel_offset */
831
832 /* Computes a dtv-relative displacement, the difference between the value
833 of sym+add and the base address of the thread-local storage block that
834 contains the definition of sym, minus 0x8000. */
835 HOWTO (R_PPC_DTPREL32,
836 0, /* rightshift */
837 2, /* size (0 = byte, 1 = short, 2 = long) */
838 32, /* bitsize */
839 FALSE, /* pc_relative */
840 0, /* bitpos */
841 complain_overflow_dont, /* complain_on_overflow */
842 ppc_elf_unhandled_reloc, /* special_function */
843 "R_PPC_DTPREL32", /* name */
844 FALSE, /* partial_inplace */
845 0, /* src_mask */
846 0xffffffff, /* dst_mask */
847 FALSE), /* pcrel_offset */
848
849 /* A 16 bit dtprel reloc. */
850 HOWTO (R_PPC_DTPREL16,
851 0, /* rightshift */
852 1, /* size (0 = byte, 1 = short, 2 = long) */
853 16, /* bitsize */
854 FALSE, /* pc_relative */
855 0, /* bitpos */
856 complain_overflow_signed, /* complain_on_overflow */
857 ppc_elf_unhandled_reloc, /* special_function */
858 "R_PPC_DTPREL16", /* name */
859 FALSE, /* partial_inplace */
860 0, /* src_mask */
861 0xffff, /* dst_mask */
862 FALSE), /* pcrel_offset */
863
864 /* Like DTPREL16, but no overflow. */
865 HOWTO (R_PPC_DTPREL16_LO,
866 0, /* rightshift */
867 1, /* size (0 = byte, 1 = short, 2 = long) */
868 16, /* bitsize */
869 FALSE, /* pc_relative */
870 0, /* bitpos */
871 complain_overflow_dont, /* complain_on_overflow */
872 ppc_elf_unhandled_reloc, /* special_function */
873 "R_PPC_DTPREL16_LO", /* name */
874 FALSE, /* partial_inplace */
875 0, /* src_mask */
876 0xffff, /* dst_mask */
877 FALSE), /* pcrel_offset */
878
879 /* Like DTPREL16_LO, but next higher group of 16 bits. */
880 HOWTO (R_PPC_DTPREL16_HI,
881 16, /* rightshift */
882 1, /* size (0 = byte, 1 = short, 2 = long) */
883 16, /* bitsize */
884 FALSE, /* pc_relative */
885 0, /* bitpos */
886 complain_overflow_dont, /* complain_on_overflow */
887 ppc_elf_unhandled_reloc, /* special_function */
888 "R_PPC_DTPREL16_HI", /* name */
889 FALSE, /* partial_inplace */
890 0, /* src_mask */
891 0xffff, /* dst_mask */
892 FALSE), /* pcrel_offset */
893
894 /* Like DTPREL16_HI, but adjust for low 16 bits. */
895 HOWTO (R_PPC_DTPREL16_HA,
896 16, /* rightshift */
897 1, /* size (0 = byte, 1 = short, 2 = long) */
898 16, /* bitsize */
899 FALSE, /* pc_relative */
900 0, /* bitpos */
901 complain_overflow_dont, /* complain_on_overflow */
902 ppc_elf_unhandled_reloc, /* special_function */
903 "R_PPC_DTPREL16_HA", /* name */
904 FALSE, /* partial_inplace */
905 0, /* src_mask */
906 0xffff, /* dst_mask */
907 FALSE), /* pcrel_offset */
908
909 /* Computes a tp-relative displacement, the difference between the value of
910 sym+add and the value of the thread pointer (r13). */
911 HOWTO (R_PPC_TPREL32,
912 0, /* rightshift */
913 2, /* size (0 = byte, 1 = short, 2 = long) */
914 32, /* bitsize */
915 FALSE, /* pc_relative */
916 0, /* bitpos */
917 complain_overflow_dont, /* complain_on_overflow */
918 ppc_elf_unhandled_reloc, /* special_function */
919 "R_PPC_TPREL32", /* name */
920 FALSE, /* partial_inplace */
921 0, /* src_mask */
922 0xffffffff, /* dst_mask */
923 FALSE), /* pcrel_offset */
924
925 /* A 16 bit tprel reloc. */
926 HOWTO (R_PPC_TPREL16,
927 0, /* rightshift */
928 1, /* size (0 = byte, 1 = short, 2 = long) */
929 16, /* bitsize */
930 FALSE, /* pc_relative */
931 0, /* bitpos */
932 complain_overflow_signed, /* complain_on_overflow */
933 ppc_elf_unhandled_reloc, /* special_function */
934 "R_PPC_TPREL16", /* name */
935 FALSE, /* partial_inplace */
936 0, /* src_mask */
937 0xffff, /* dst_mask */
938 FALSE), /* pcrel_offset */
939
940 /* Like TPREL16, but no overflow. */
941 HOWTO (R_PPC_TPREL16_LO,
942 0, /* rightshift */
943 1, /* size (0 = byte, 1 = short, 2 = long) */
944 16, /* bitsize */
945 FALSE, /* pc_relative */
946 0, /* bitpos */
947 complain_overflow_dont, /* complain_on_overflow */
948 ppc_elf_unhandled_reloc, /* special_function */
949 "R_PPC_TPREL16_LO", /* name */
950 FALSE, /* partial_inplace */
951 0, /* src_mask */
952 0xffff, /* dst_mask */
953 FALSE), /* pcrel_offset */
954
955 /* Like TPREL16_LO, but next higher group of 16 bits. */
956 HOWTO (R_PPC_TPREL16_HI,
957 16, /* rightshift */
958 1, /* size (0 = byte, 1 = short, 2 = long) */
959 16, /* bitsize */
960 FALSE, /* pc_relative */
961 0, /* bitpos */
962 complain_overflow_dont, /* complain_on_overflow */
963 ppc_elf_unhandled_reloc, /* special_function */
964 "R_PPC_TPREL16_HI", /* name */
965 FALSE, /* partial_inplace */
966 0, /* src_mask */
967 0xffff, /* dst_mask */
968 FALSE), /* pcrel_offset */
969
970 /* Like TPREL16_HI, but adjust for low 16 bits. */
971 HOWTO (R_PPC_TPREL16_HA,
972 16, /* rightshift */
973 1, /* size (0 = byte, 1 = short, 2 = long) */
974 16, /* bitsize */
975 FALSE, /* pc_relative */
976 0, /* bitpos */
977 complain_overflow_dont, /* complain_on_overflow */
978 ppc_elf_unhandled_reloc, /* special_function */
979 "R_PPC_TPREL16_HA", /* name */
980 FALSE, /* partial_inplace */
981 0, /* src_mask */
982 0xffff, /* dst_mask */
983 FALSE), /* pcrel_offset */
984
985 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
986 with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
987 to the first entry. */
988 HOWTO (R_PPC_GOT_TLSGD16,
989 0, /* rightshift */
990 1, /* size (0 = byte, 1 = short, 2 = long) */
991 16, /* bitsize */
992 FALSE, /* pc_relative */
993 0, /* bitpos */
994 complain_overflow_signed, /* complain_on_overflow */
995 ppc_elf_unhandled_reloc, /* special_function */
996 "R_PPC_GOT_TLSGD16", /* name */
997 FALSE, /* partial_inplace */
998 0, /* src_mask */
999 0xffff, /* dst_mask */
1000 FALSE), /* pcrel_offset */
1001
1002 /* Like GOT_TLSGD16, but no overflow. */
1003 HOWTO (R_PPC_GOT_TLSGD16_LO,
1004 0, /* rightshift */
1005 1, /* size (0 = byte, 1 = short, 2 = long) */
1006 16, /* bitsize */
1007 FALSE, /* pc_relative */
1008 0, /* bitpos */
1009 complain_overflow_dont, /* complain_on_overflow */
1010 ppc_elf_unhandled_reloc, /* special_function */
1011 "R_PPC_GOT_TLSGD16_LO", /* name */
1012 FALSE, /* partial_inplace */
1013 0, /* src_mask */
1014 0xffff, /* dst_mask */
1015 FALSE), /* pcrel_offset */
1016
1017 /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
1018 HOWTO (R_PPC_GOT_TLSGD16_HI,
1019 16, /* rightshift */
1020 1, /* size (0 = byte, 1 = short, 2 = long) */
1021 16, /* bitsize */
1022 FALSE, /* pc_relative */
1023 0, /* bitpos */
1024 complain_overflow_dont, /* complain_on_overflow */
1025 ppc_elf_unhandled_reloc, /* special_function */
1026 "R_PPC_GOT_TLSGD16_HI", /* name */
1027 FALSE, /* partial_inplace */
1028 0, /* src_mask */
1029 0xffff, /* dst_mask */
1030 FALSE), /* pcrel_offset */
1031
1032 /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
1033 HOWTO (R_PPC_GOT_TLSGD16_HA,
1034 16, /* rightshift */
1035 1, /* size (0 = byte, 1 = short, 2 = long) */
1036 16, /* bitsize */
1037 FALSE, /* pc_relative */
1038 0, /* bitpos */
1039 complain_overflow_dont, /* complain_on_overflow */
1040 ppc_elf_unhandled_reloc, /* special_function */
1041 "R_PPC_GOT_TLSGD16_HA", /* name */
1042 FALSE, /* partial_inplace */
1043 0, /* src_mask */
1044 0xffff, /* dst_mask */
1045 FALSE), /* pcrel_offset */
1046
1047 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1048 with values (sym+add)@dtpmod and zero, and computes the offset to the
1049 first entry. */
1050 HOWTO (R_PPC_GOT_TLSLD16,
1051 0, /* rightshift */
1052 1, /* size (0 = byte, 1 = short, 2 = long) */
1053 16, /* bitsize */
1054 FALSE, /* pc_relative */
1055 0, /* bitpos */
1056 complain_overflow_signed, /* complain_on_overflow */
1057 ppc_elf_unhandled_reloc, /* special_function */
1058 "R_PPC_GOT_TLSLD16", /* name */
1059 FALSE, /* partial_inplace */
1060 0, /* src_mask */
1061 0xffff, /* dst_mask */
1062 FALSE), /* pcrel_offset */
1063
1064 /* Like GOT_TLSLD16, but no overflow. */
1065 HOWTO (R_PPC_GOT_TLSLD16_LO,
1066 0, /* rightshift */
1067 1, /* size (0 = byte, 1 = short, 2 = long) */
1068 16, /* bitsize */
1069 FALSE, /* pc_relative */
1070 0, /* bitpos */
1071 complain_overflow_dont, /* complain_on_overflow */
1072 ppc_elf_unhandled_reloc, /* special_function */
1073 "R_PPC_GOT_TLSLD16_LO", /* name */
1074 FALSE, /* partial_inplace */
1075 0, /* src_mask */
1076 0xffff, /* dst_mask */
1077 FALSE), /* pcrel_offset */
1078
1079 /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
1080 HOWTO (R_PPC_GOT_TLSLD16_HI,
1081 16, /* rightshift */
1082 1, /* size (0 = byte, 1 = short, 2 = long) */
1083 16, /* bitsize */
1084 FALSE, /* pc_relative */
1085 0, /* bitpos */
1086 complain_overflow_dont, /* complain_on_overflow */
1087 ppc_elf_unhandled_reloc, /* special_function */
1088 "R_PPC_GOT_TLSLD16_HI", /* name */
1089 FALSE, /* partial_inplace */
1090 0, /* src_mask */
1091 0xffff, /* dst_mask */
1092 FALSE), /* pcrel_offset */
1093
1094 /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
1095 HOWTO (R_PPC_GOT_TLSLD16_HA,
1096 16, /* rightshift */
1097 1, /* size (0 = byte, 1 = short, 2 = long) */
1098 16, /* bitsize */
1099 FALSE, /* pc_relative */
1100 0, /* bitpos */
1101 complain_overflow_dont, /* complain_on_overflow */
1102 ppc_elf_unhandled_reloc, /* special_function */
1103 "R_PPC_GOT_TLSLD16_HA", /* name */
1104 FALSE, /* partial_inplace */
1105 0, /* src_mask */
1106 0xffff, /* dst_mask */
1107 FALSE), /* pcrel_offset */
1108
1109 /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
1110 the offset to the entry. */
1111 HOWTO (R_PPC_GOT_DTPREL16,
1112 0, /* rightshift */
1113 1, /* size (0 = byte, 1 = short, 2 = long) */
1114 16, /* bitsize */
1115 FALSE, /* pc_relative */
1116 0, /* bitpos */
1117 complain_overflow_signed, /* complain_on_overflow */
1118 ppc_elf_unhandled_reloc, /* special_function */
1119 "R_PPC_GOT_DTPREL16", /* name */
1120 FALSE, /* partial_inplace */
1121 0, /* src_mask */
1122 0xffff, /* dst_mask */
1123 FALSE), /* pcrel_offset */
1124
1125 /* Like GOT_DTPREL16, but no overflow. */
1126 HOWTO (R_PPC_GOT_DTPREL16_LO,
1127 0, /* rightshift */
1128 1, /* size (0 = byte, 1 = short, 2 = long) */
1129 16, /* bitsize */
1130 FALSE, /* pc_relative */
1131 0, /* bitpos */
1132 complain_overflow_dont, /* complain_on_overflow */
1133 ppc_elf_unhandled_reloc, /* special_function */
1134 "R_PPC_GOT_DTPREL16_LO", /* name */
1135 FALSE, /* partial_inplace */
1136 0, /* src_mask */
1137 0xffff, /* dst_mask */
1138 FALSE), /* pcrel_offset */
1139
1140 /* Like GOT_DTPREL16_LO, but next higher group of 16 bits. */
1141 HOWTO (R_PPC_GOT_DTPREL16_HI,
1142 16, /* rightshift */
1143 1, /* size (0 = byte, 1 = short, 2 = long) */
1144 16, /* bitsize */
1145 FALSE, /* pc_relative */
1146 0, /* bitpos */
1147 complain_overflow_dont, /* complain_on_overflow */
1148 ppc_elf_unhandled_reloc, /* special_function */
1149 "R_PPC_GOT_DTPREL16_HI", /* name */
1150 FALSE, /* partial_inplace */
1151 0, /* src_mask */
1152 0xffff, /* dst_mask */
1153 FALSE), /* pcrel_offset */
1154
1155 /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
1156 HOWTO (R_PPC_GOT_DTPREL16_HA,
1157 16, /* rightshift */
1158 1, /* size (0 = byte, 1 = short, 2 = long) */
1159 16, /* bitsize */
1160 FALSE, /* pc_relative */
1161 0, /* bitpos */
1162 complain_overflow_dont, /* complain_on_overflow */
1163 ppc_elf_unhandled_reloc, /* special_function */
1164 "R_PPC_GOT_DTPREL16_HA", /* name */
1165 FALSE, /* partial_inplace */
1166 0, /* src_mask */
1167 0xffff, /* dst_mask */
1168 FALSE), /* pcrel_offset */
1169
1170 /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
1171 offset to the entry. */
1172 HOWTO (R_PPC_GOT_TPREL16,
1173 0, /* rightshift */
1174 1, /* size (0 = byte, 1 = short, 2 = long) */
1175 16, /* bitsize */
1176 FALSE, /* pc_relative */
1177 0, /* bitpos */
1178 complain_overflow_signed, /* complain_on_overflow */
1179 ppc_elf_unhandled_reloc, /* special_function */
1180 "R_PPC_GOT_TPREL16", /* name */
1181 FALSE, /* partial_inplace */
1182 0, /* src_mask */
1183 0xffff, /* dst_mask */
1184 FALSE), /* pcrel_offset */
1185
1186 /* Like GOT_TPREL16, but no overflow. */
1187 HOWTO (R_PPC_GOT_TPREL16_LO,
1188 0, /* rightshift */
1189 1, /* size (0 = byte, 1 = short, 2 = long) */
1190 16, /* bitsize */
1191 FALSE, /* pc_relative */
1192 0, /* bitpos */
1193 complain_overflow_dont, /* complain_on_overflow */
1194 ppc_elf_unhandled_reloc, /* special_function */
1195 "R_PPC_GOT_TPREL16_LO", /* name */
1196 FALSE, /* partial_inplace */
1197 0, /* src_mask */
1198 0xffff, /* dst_mask */
1199 FALSE), /* pcrel_offset */
1200
1201 /* Like GOT_TPREL16_LO, but next higher group of 16 bits. */
1202 HOWTO (R_PPC_GOT_TPREL16_HI,
1203 16, /* rightshift */
1204 1, /* size (0 = byte, 1 = short, 2 = long) */
1205 16, /* bitsize */
1206 FALSE, /* pc_relative */
1207 0, /* bitpos */
1208 complain_overflow_dont, /* complain_on_overflow */
1209 ppc_elf_unhandled_reloc, /* special_function */
1210 "R_PPC_GOT_TPREL16_HI", /* name */
1211 FALSE, /* partial_inplace */
1212 0, /* src_mask */
1213 0xffff, /* dst_mask */
1214 FALSE), /* pcrel_offset */
1215
1216 /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
1217 HOWTO (R_PPC_GOT_TPREL16_HA,
1218 16, /* rightshift */
1219 1, /* size (0 = byte, 1 = short, 2 = long) */
1220 16, /* bitsize */
1221 FALSE, /* pc_relative */
1222 0, /* bitpos */
1223 complain_overflow_dont, /* complain_on_overflow */
1224 ppc_elf_unhandled_reloc, /* special_function */
1225 "R_PPC_GOT_TPREL16_HA", /* name */
1226 FALSE, /* partial_inplace */
1227 0, /* src_mask */
1228 0xffff, /* dst_mask */
1229 FALSE), /* pcrel_offset */
1230
1231 /* The remaining relocs are from the Embedded ELF ABI, and are not
1232 in the SVR4 ELF ABI. */
1233
1234 /* 32 bit value resulting from the addend minus the symbol. */
1235 HOWTO (R_PPC_EMB_NADDR32, /* type */
1236 0, /* rightshift */
1237 2, /* size (0 = byte, 1 = short, 2 = long) */
1238 32, /* bitsize */
1239 FALSE, /* pc_relative */
1240 0, /* bitpos */
1241 complain_overflow_dont, /* complain_on_overflow */
1242 ppc_elf_unhandled_reloc, /* special_function */
1243 "R_PPC_EMB_NADDR32", /* name */
1244 FALSE, /* partial_inplace */
1245 0, /* src_mask */
1246 0xffffffff, /* dst_mask */
1247 FALSE), /* pcrel_offset */
1248
1249 /* 16 bit value resulting from the addend minus the symbol. */
1250 HOWTO (R_PPC_EMB_NADDR16, /* type */
1251 0, /* rightshift */
1252 1, /* size (0 = byte, 1 = short, 2 = long) */
1253 16, /* bitsize */
1254 FALSE, /* pc_relative */
1255 0, /* bitpos */
1256 complain_overflow_signed, /* complain_on_overflow */
1257 ppc_elf_unhandled_reloc, /* special_function */
1258 "R_PPC_EMB_NADDR16", /* name */
1259 FALSE, /* partial_inplace */
1260 0, /* src_mask */
1261 0xffff, /* dst_mask */
1262 FALSE), /* pcrel_offset */
1263
1264 /* 16 bit value resulting from the addend minus the symbol. */
1265 HOWTO (R_PPC_EMB_NADDR16_LO, /* type */
1266 0, /* rightshift */
1267 1, /* size (0 = byte, 1 = short, 2 = long) */
1268 16, /* bitsize */
1269 FALSE, /* pc_relative */
1270 0, /* bitpos */
1271 complain_overflow_dont,/* complain_on_overflow */
1272 ppc_elf_unhandled_reloc, /* special_function */
1273 "R_PPC_EMB_ADDR16_LO", /* name */
1274 FALSE, /* partial_inplace */
1275 0, /* src_mask */
1276 0xffff, /* dst_mask */
1277 FALSE), /* pcrel_offset */
1278
1279 /* The high order 16 bits of the addend minus the symbol. */
1280 HOWTO (R_PPC_EMB_NADDR16_HI, /* type */
1281 16, /* rightshift */
1282 1, /* size (0 = byte, 1 = short, 2 = long) */
1283 16, /* bitsize */
1284 FALSE, /* pc_relative */
1285 0, /* bitpos */
1286 complain_overflow_dont, /* complain_on_overflow */
1287 ppc_elf_unhandled_reloc, /* special_function */
1288 "R_PPC_EMB_NADDR16_HI", /* name */
1289 FALSE, /* partial_inplace */
1290 0, /* src_mask */
1291 0xffff, /* dst_mask */
1292 FALSE), /* pcrel_offset */
1293
1294 /* The high order 16 bits of the result of the addend minus the address,
1295 plus 1 if the contents of the low 16 bits, treated as a signed number,
1296 is negative. */
1297 HOWTO (R_PPC_EMB_NADDR16_HA, /* type */
1298 16, /* rightshift */
1299 1, /* size (0 = byte, 1 = short, 2 = long) */
1300 16, /* bitsize */
1301 FALSE, /* pc_relative */
1302 0, /* bitpos */
1303 complain_overflow_dont, /* complain_on_overflow */
1304 ppc_elf_unhandled_reloc, /* special_function */
1305 "R_PPC_EMB_NADDR16_HA", /* name */
1306 FALSE, /* partial_inplace */
1307 0, /* src_mask */
1308 0xffff, /* dst_mask */
1309 FALSE), /* pcrel_offset */
1310
1311 /* 16 bit value resulting from allocating a 4 byte word to hold an
1312 address in the .sdata section, and returning the offset from
1313 _SDA_BASE_ for that relocation. */
1314 HOWTO (R_PPC_EMB_SDAI16, /* type */
1315 0, /* rightshift */
1316 1, /* size (0 = byte, 1 = short, 2 = long) */
1317 16, /* bitsize */
1318 FALSE, /* pc_relative */
1319 0, /* bitpos */
1320 complain_overflow_signed, /* complain_on_overflow */
1321 ppc_elf_unhandled_reloc, /* special_function */
1322 "R_PPC_EMB_SDAI16", /* name */
1323 FALSE, /* partial_inplace */
1324 0, /* src_mask */
1325 0xffff, /* dst_mask */
1326 FALSE), /* pcrel_offset */
1327
1328 /* 16 bit value resulting from allocating a 4 byte word to hold an
1329 address in the .sdata2 section, and returning the offset from
1330 _SDA2_BASE_ for that relocation. */
1331 HOWTO (R_PPC_EMB_SDA2I16, /* type */
1332 0, /* rightshift */
1333 1, /* size (0 = byte, 1 = short, 2 = long) */
1334 16, /* bitsize */
1335 FALSE, /* pc_relative */
1336 0, /* bitpos */
1337 complain_overflow_signed, /* complain_on_overflow */
1338 ppc_elf_unhandled_reloc, /* special_function */
1339 "R_PPC_EMB_SDA2I16", /* name */
1340 FALSE, /* partial_inplace */
1341 0, /* src_mask */
1342 0xffff, /* dst_mask */
1343 FALSE), /* pcrel_offset */
1344
1345 /* A sign-extended 16 bit value relative to _SDA2_BASE_, for use with
1346 small data items. */
1347 HOWTO (R_PPC_EMB_SDA2REL, /* type */
1348 0, /* rightshift */
1349 1, /* size (0 = byte, 1 = short, 2 = long) */
1350 16, /* bitsize */
1351 FALSE, /* pc_relative */
1352 0, /* bitpos */
1353 complain_overflow_signed, /* complain_on_overflow */
1354 ppc_elf_unhandled_reloc, /* special_function */
1355 "R_PPC_EMB_SDA2REL", /* name */
1356 FALSE, /* partial_inplace */
1357 0, /* src_mask */
1358 0xffff, /* dst_mask */
1359 FALSE), /* pcrel_offset */
1360
1361 /* Relocate against either _SDA_BASE_ or _SDA2_BASE_, filling in the 16 bit
1362 signed offset from the appropriate base, and filling in the register
1363 field with the appropriate register (0, 2, or 13). */
1364 HOWTO (R_PPC_EMB_SDA21, /* type */
1365 0, /* rightshift */
1366 2, /* size (0 = byte, 1 = short, 2 = long) */
1367 16, /* bitsize */
1368 FALSE, /* pc_relative */
1369 0, /* bitpos */
1370 complain_overflow_signed, /* complain_on_overflow */
1371 ppc_elf_unhandled_reloc, /* special_function */
1372 "R_PPC_EMB_SDA21", /* name */
1373 FALSE, /* partial_inplace */
1374 0, /* src_mask */
1375 0xffff, /* dst_mask */
1376 FALSE), /* pcrel_offset */
1377
1378 /* Relocation not handled: R_PPC_EMB_MRKREF */
1379 /* Relocation not handled: R_PPC_EMB_RELSEC16 */
1380 /* Relocation not handled: R_PPC_EMB_RELST_LO */
1381 /* Relocation not handled: R_PPC_EMB_RELST_HI */
1382 /* Relocation not handled: R_PPC_EMB_RELST_HA */
1383 /* Relocation not handled: R_PPC_EMB_BIT_FLD */
1384
1385 /* PC relative relocation against either _SDA_BASE_ or _SDA2_BASE_, filling
1386 in the 16 bit signed offset from the appropriate base, and filling in the
1387 register field with the appropriate register (0, 2, or 13). */
1388 HOWTO (R_PPC_EMB_RELSDA, /* type */
1389 0, /* rightshift */
1390 1, /* size (0 = byte, 1 = short, 2 = long) */
1391 16, /* bitsize */
1392 FALSE, /* pc_relative */
1393 0, /* bitpos */
1394 complain_overflow_signed, /* complain_on_overflow */
1395 ppc_elf_unhandled_reloc, /* special_function */
1396 "R_PPC_EMB_RELSDA", /* name */
1397 FALSE, /* partial_inplace */
1398 0, /* src_mask */
1399 0xffff, /* dst_mask */
1400 FALSE), /* pcrel_offset */
1401
1402 /* A relative 8 bit branch. */
1403 HOWTO (R_PPC_VLE_REL8, /* type */
1404 1, /* rightshift */
1405 1, /* size (0 = byte, 1 = short, 2 = long) */
1406 8, /* bitsize */
1407 TRUE, /* pc_relative */
1408 0, /* bitpos */
1409 complain_overflow_signed, /* complain_on_overflow */
1410 bfd_elf_generic_reloc, /* special_function */
1411 "R_PPC_VLE_REL8", /* name */
1412 FALSE, /* partial_inplace */
1413 0, /* src_mask */
1414 0xff, /* dst_mask */
1415 TRUE), /* pcrel_offset */
1416
1417 /* A relative 15 bit branch. */
1418 HOWTO (R_PPC_VLE_REL15, /* type */
1419 1, /* rightshift */
1420 2, /* size (0 = byte, 1 = short, 2 = long) */
1421 15, /* bitsize */
1422 TRUE, /* pc_relative */
1423 1, /* bitpos */
1424 complain_overflow_signed, /* complain_on_overflow */
1425 bfd_elf_generic_reloc, /* special_function */
1426 "R_PPC_VLE_REL15", /* name */
1427 FALSE, /* partial_inplace */
1428 0, /* src_mask */
1429 0xfffe, /* dst_mask */
1430 TRUE), /* pcrel_offset */
1431
1432 /* A relative 24 bit branch. */
1433 HOWTO (R_PPC_VLE_REL24, /* type */
1434 1, /* rightshift */
1435 2, /* size (0 = byte, 1 = short, 2 = long) */
1436 24, /* bitsize */
1437 TRUE, /* pc_relative */
1438 1, /* bitpos */
1439 complain_overflow_signed, /* complain_on_overflow */
1440 bfd_elf_generic_reloc, /* special_function */
1441 "R_PPC_VLE_REL24", /* name */
1442 FALSE, /* partial_inplace */
1443 0, /* src_mask */
1444 0x1fffffe, /* dst_mask */
1445 TRUE), /* pcrel_offset */
1446
1447 /* The 16 LSBS in split16a format. */
1448 HOWTO (R_PPC_VLE_LO16A, /* type */
1449 0, /* rightshift */
1450 2, /* size (0 = byte, 1 = short, 2 = long) */
1451 16, /* bitsize */
1452 FALSE, /* pc_relative */
1453 0, /* bitpos */
1454 complain_overflow_dont, /* complain_on_overflow */
1455 ppc_elf_unhandled_reloc, /* special_function */
1456 "R_PPC_VLE_LO16A", /* name */
1457 FALSE, /* partial_inplace */
1458 0, /* src_mask */
1459 0x1f07ff, /* dst_mask */
1460 FALSE), /* pcrel_offset */
1461
1462 /* The 16 LSBS in split16d format. */
1463 HOWTO (R_PPC_VLE_LO16D, /* type */
1464 0, /* rightshift */
1465 2, /* size (0 = byte, 1 = short, 2 = long) */
1466 16, /* bitsize */
1467 FALSE, /* pc_relative */
1468 0, /* bitpos */
1469 complain_overflow_dont, /* complain_on_overflow */
1470 ppc_elf_unhandled_reloc, /* special_function */
1471 "R_PPC_VLE_LO16D", /* name */
1472 FALSE, /* partial_inplace */
1473 0, /* src_mask */
1474 0x3e007ff, /* dst_mask */
1475 FALSE), /* pcrel_offset */
1476
1477 /* Bits 16-31 split16a format. */
1478 HOWTO (R_PPC_VLE_HI16A, /* type */
1479 16, /* rightshift */
1480 2, /* size (0 = byte, 1 = short, 2 = long) */
1481 16, /* bitsize */
1482 FALSE, /* pc_relative */
1483 0, /* bitpos */
1484 complain_overflow_dont, /* complain_on_overflow */
1485 ppc_elf_unhandled_reloc, /* special_function */
1486 "R_PPC_VLE_HI16A", /* name */
1487 FALSE, /* partial_inplace */
1488 0, /* src_mask */
1489 0x1f07ff, /* dst_mask */
1490 FALSE), /* pcrel_offset */
1491
1492 /* Bits 16-31 split16d format. */
1493 HOWTO (R_PPC_VLE_HI16D, /* type */
1494 16, /* rightshift */
1495 2, /* size (0 = byte, 1 = short, 2 = long) */
1496 16, /* bitsize */
1497 FALSE, /* pc_relative */
1498 0, /* bitpos */
1499 complain_overflow_dont, /* complain_on_overflow */
1500 ppc_elf_unhandled_reloc, /* special_function */
1501 "R_PPC_VLE_HI16D", /* name */
1502 FALSE, /* partial_inplace */
1503 0, /* src_mask */
1504 0x3e007ff, /* dst_mask */
1505 FALSE), /* pcrel_offset */
1506
1507 /* Bits 16-31 (High Adjusted) in split16a format. */
1508 HOWTO (R_PPC_VLE_HA16A, /* type */
1509 16, /* rightshift */
1510 2, /* size (0 = byte, 1 = short, 2 = long) */
1511 16, /* bitsize */
1512 FALSE, /* pc_relative */
1513 0, /* bitpos */
1514 complain_overflow_dont, /* complain_on_overflow */
1515 ppc_elf_unhandled_reloc, /* special_function */
1516 "R_PPC_VLE_HA16A", /* name */
1517 FALSE, /* partial_inplace */
1518 0, /* src_mask */
1519 0x1f07ff, /* dst_mask */
1520 FALSE), /* pcrel_offset */
1521
1522 /* Bits 16-31 (High Adjusted) in split16d format. */
1523 HOWTO (R_PPC_VLE_HA16D, /* type */
1524 16, /* rightshift */
1525 2, /* size (0 = byte, 1 = short, 2 = long) */
1526 16, /* bitsize */
1527 FALSE, /* pc_relative */
1528 0, /* bitpos */
1529 complain_overflow_dont, /* complain_on_overflow */
1530 ppc_elf_unhandled_reloc, /* special_function */
1531 "R_PPC_VLE_HA16D", /* name */
1532 FALSE, /* partial_inplace */
1533 0, /* src_mask */
1534 0x3e007ff, /* dst_mask */
1535 FALSE), /* pcrel_offset */
1536
1537 /* This reloc is like R_PPC_EMB_SDA21 but only applies to e_add16i
1538 instructions. If the register base is 0 then the linker changes
1539 the e_add16i to an e_li instruction. */
1540 HOWTO (R_PPC_VLE_SDA21, /* type */
1541 0, /* rightshift */
1542 2, /* size (0 = byte, 1 = short, 2 = long) */
1543 16, /* bitsize */
1544 FALSE, /* pc_relative */
1545 0, /* bitpos */
1546 complain_overflow_signed, /* complain_on_overflow */
1547 ppc_elf_unhandled_reloc, /* special_function */
1548 "R_PPC_VLE_SDA21", /* name */
1549 FALSE, /* partial_inplace */
1550 0, /* src_mask */
1551 0xffff, /* dst_mask */
1552 FALSE), /* pcrel_offset */
1553
1554 /* Like R_PPC_VLE_SDA21 but ignore overflow. */
1555 HOWTO (R_PPC_VLE_SDA21_LO, /* type */
1556 0, /* rightshift */
1557 2, /* size (0 = byte, 1 = short, 2 = long) */
1558 16, /* bitsize */
1559 FALSE, /* pc_relative */
1560 0, /* bitpos */
1561 complain_overflow_dont, /* complain_on_overflow */
1562 ppc_elf_unhandled_reloc, /* special_function */
1563 "R_PPC_VLE_SDA21_LO", /* name */
1564 FALSE, /* partial_inplace */
1565 0, /* src_mask */
1566 0xffff, /* dst_mask */
1567 FALSE), /* pcrel_offset */
1568
1569 /* The 16 LSBS relative to _SDA_BASE_ in split16a format. */
1570 HOWTO (R_PPC_VLE_SDAREL_LO16A,/* type */
1571 0, /* rightshift */
1572 2, /* size (0 = byte, 1 = short, 2 = long) */
1573 16, /* bitsize */
1574 FALSE, /* pc_relative */
1575 0, /* bitpos */
1576 complain_overflow_dont, /* complain_on_overflow */
1577 ppc_elf_unhandled_reloc, /* special_function */
1578 "R_PPC_VLE_SDAREL_LO16A", /* name */
1579 FALSE, /* partial_inplace */
1580 0, /* src_mask */
1581 0x1f07ff, /* dst_mask */
1582 FALSE), /* pcrel_offset */
1583
1584 /* The 16 LSBS relative to _SDA_BASE_ in split16d format. */
1585 HOWTO (R_PPC_VLE_SDAREL_LO16D, /* type */
1586 0, /* rightshift */
1587 2, /* size (0 = byte, 1 = short, 2 = long) */
1588 16, /* bitsize */
1589 FALSE, /* pc_relative */
1590 0, /* bitpos */
1591 complain_overflow_dont, /* complain_on_overflow */
1592 ppc_elf_unhandled_reloc, /* special_function */
1593 "R_PPC_VLE_SDAREL_LO16D", /* name */
1594 FALSE, /* partial_inplace */
1595 0, /* src_mask */
1596 0x3e007ff, /* dst_mask */
1597 FALSE), /* pcrel_offset */
1598
1599 /* Bits 16-31 relative to _SDA_BASE_ in split16a format. */
1600 HOWTO (R_PPC_VLE_SDAREL_HI16A, /* type */
1601 16, /* rightshift */
1602 2, /* size (0 = byte, 1 = short, 2 = long) */
1603 16, /* bitsize */
1604 FALSE, /* pc_relative */
1605 0, /* bitpos */
1606 complain_overflow_dont, /* complain_on_overflow */
1607 ppc_elf_unhandled_reloc, /* special_function */
1608 "R_PPC_VLE_SDAREL_HI16A", /* name */
1609 FALSE, /* partial_inplace */
1610 0, /* src_mask */
1611 0x1f07ff, /* dst_mask */
1612 FALSE), /* pcrel_offset */
1613
1614 /* Bits 16-31 relative to _SDA_BASE_ in split16d format. */
1615 HOWTO (R_PPC_VLE_SDAREL_HI16D, /* type */
1616 16, /* rightshift */
1617 2, /* size (0 = byte, 1 = short, 2 = long) */
1618 16, /* bitsize */
1619 FALSE, /* pc_relative */
1620 0, /* bitpos */
1621 complain_overflow_dont, /* complain_on_overflow */
1622 ppc_elf_unhandled_reloc, /* special_function */
1623 "R_PPC_VLE_SDAREL_HI16D", /* name */
1624 FALSE, /* partial_inplace */
1625 0, /* src_mask */
1626 0x3e007ff, /* dst_mask */
1627 FALSE), /* pcrel_offset */
1628
1629 /* Bits 16-31 (HA) relative to _SDA_BASE split16a format. */
1630 HOWTO (R_PPC_VLE_SDAREL_HA16A, /* type */
1631 16, /* rightshift */
1632 2, /* size (0 = byte, 1 = short, 2 = long) */
1633 16, /* bitsize */
1634 FALSE, /* pc_relative */
1635 0, /* bitpos */
1636 complain_overflow_dont, /* complain_on_overflow */
1637 ppc_elf_unhandled_reloc, /* special_function */
1638 "R_PPC_VLE_SDAREL_HA16A", /* name */
1639 FALSE, /* partial_inplace */
1640 0, /* src_mask */
1641 0x1f07ff, /* dst_mask */
1642 FALSE), /* pcrel_offset */
1643
1644 /* Bits 16-31 (HA) relative to _SDA_BASE split16d format. */
1645 HOWTO (R_PPC_VLE_SDAREL_HA16D, /* type */
1646 16, /* rightshift */
1647 2, /* size (0 = byte, 1 = short, 2 = long) */
1648 16, /* bitsize */
1649 FALSE, /* pc_relative */
1650 0, /* bitpos */
1651 complain_overflow_dont, /* complain_on_overflow */
1652 ppc_elf_unhandled_reloc, /* special_function */
1653 "R_PPC_VLE_SDAREL_HA16D", /* name */
1654 FALSE, /* partial_inplace */
1655 0, /* src_mask */
1656 0x3e007ff, /* dst_mask */
1657 FALSE), /* pcrel_offset */
1658
1659 HOWTO (R_PPC_IRELATIVE, /* type */
1660 0, /* rightshift */
1661 2, /* size (0 = byte, 1 = short, 2 = long) */
1662 32, /* bitsize */
1663 FALSE, /* pc_relative */
1664 0, /* bitpos */
1665 complain_overflow_dont, /* complain_on_overflow */
1666 ppc_elf_unhandled_reloc, /* special_function */
1667 "R_PPC_IRELATIVE", /* name */
1668 FALSE, /* partial_inplace */
1669 0, /* src_mask */
1670 0xffffffff, /* dst_mask */
1671 FALSE), /* pcrel_offset */
1672
1673 /* A 16 bit relative relocation. */
1674 HOWTO (R_PPC_REL16, /* type */
1675 0, /* rightshift */
1676 1, /* size (0 = byte, 1 = short, 2 = long) */
1677 16, /* bitsize */
1678 TRUE, /* pc_relative */
1679 0, /* bitpos */
1680 complain_overflow_signed, /* complain_on_overflow */
1681 bfd_elf_generic_reloc, /* special_function */
1682 "R_PPC_REL16", /* name */
1683 FALSE, /* partial_inplace */
1684 0, /* src_mask */
1685 0xffff, /* dst_mask */
1686 TRUE), /* pcrel_offset */
1687
1688 /* A 16 bit relative relocation without overflow. */
1689 HOWTO (R_PPC_REL16_LO, /* type */
1690 0, /* rightshift */
1691 1, /* size (0 = byte, 1 = short, 2 = long) */
1692 16, /* bitsize */
1693 TRUE, /* pc_relative */
1694 0, /* bitpos */
1695 complain_overflow_dont,/* complain_on_overflow */
1696 bfd_elf_generic_reloc, /* special_function */
1697 "R_PPC_REL16_LO", /* name */
1698 FALSE, /* partial_inplace */
1699 0, /* src_mask */
1700 0xffff, /* dst_mask */
1701 TRUE), /* pcrel_offset */
1702
1703 /* The high order 16 bits of a relative address. */
1704 HOWTO (R_PPC_REL16_HI, /* type */
1705 16, /* rightshift */
1706 1, /* size (0 = byte, 1 = short, 2 = long) */
1707 16, /* bitsize */
1708 TRUE, /* pc_relative */
1709 0, /* bitpos */
1710 complain_overflow_dont, /* complain_on_overflow */
1711 bfd_elf_generic_reloc, /* special_function */
1712 "R_PPC_REL16_HI", /* name */
1713 FALSE, /* partial_inplace */
1714 0, /* src_mask */
1715 0xffff, /* dst_mask */
1716 TRUE), /* pcrel_offset */
1717
1718 /* The high order 16 bits of a relative address, plus 1 if the contents of
1719 the low 16 bits, treated as a signed number, is negative. */
1720 HOWTO (R_PPC_REL16_HA, /* type */
1721 16, /* rightshift */
1722 1, /* size (0 = byte, 1 = short, 2 = long) */
1723 16, /* bitsize */
1724 TRUE, /* pc_relative */
1725 0, /* bitpos */
1726 complain_overflow_dont, /* complain_on_overflow */
1727 ppc_elf_addr16_ha_reloc, /* special_function */
1728 "R_PPC_REL16_HA", /* name */
1729 FALSE, /* partial_inplace */
1730 0, /* src_mask */
1731 0xffff, /* dst_mask */
1732 TRUE), /* pcrel_offset */
1733
1734 /* Like R_PPC_REL16_HA but for split field in addpcis. */
1735 HOWTO (R_PPC_REL16DX_HA, /* type */
1736 16, /* rightshift */
1737 2, /* size (0 = byte, 1 = short, 2 = long) */
1738 16, /* bitsize */
1739 TRUE, /* pc_relative */
1740 0, /* bitpos */
1741 complain_overflow_signed, /* complain_on_overflow */
1742 ppc_elf_addr16_ha_reloc, /* special_function */
1743 "R_PPC_REL16DX_HA", /* name */
1744 FALSE, /* partial_inplace */
1745 0, /* src_mask */
1746 0x1fffc1, /* dst_mask */
1747 TRUE), /* pcrel_offset */
1748
1749 /* A split-field reloc for addpcis, non-relative (gas internal use only). */
1750 HOWTO (R_PPC_16DX_HA, /* type */
1751 16, /* rightshift */
1752 2, /* size (0 = byte, 1 = short, 2 = long) */
1753 16, /* bitsize */
1754 FALSE, /* pc_relative */
1755 0, /* bitpos */
1756 complain_overflow_signed, /* complain_on_overflow */
1757 ppc_elf_addr16_ha_reloc, /* special_function */
1758 "R_PPC_16DX_HA", /* name */
1759 FALSE, /* partial_inplace */
1760 0, /* src_mask */
1761 0x1fffc1, /* dst_mask */
1762 FALSE), /* pcrel_offset */
1763
1764 /* GNU extension to record C++ vtable hierarchy. */
1765 HOWTO (R_PPC_GNU_VTINHERIT, /* type */
1766 0, /* rightshift */
1767 0, /* size (0 = byte, 1 = short, 2 = long) */
1768 0, /* bitsize */
1769 FALSE, /* pc_relative */
1770 0, /* bitpos */
1771 complain_overflow_dont, /* complain_on_overflow */
1772 NULL, /* special_function */
1773 "R_PPC_GNU_VTINHERIT", /* name */
1774 FALSE, /* partial_inplace */
1775 0, /* src_mask */
1776 0, /* dst_mask */
1777 FALSE), /* pcrel_offset */
1778
1779 /* GNU extension to record C++ vtable member usage. */
1780 HOWTO (R_PPC_GNU_VTENTRY, /* type */
1781 0, /* rightshift */
1782 0, /* size (0 = byte, 1 = short, 2 = long) */
1783 0, /* bitsize */
1784 FALSE, /* pc_relative */
1785 0, /* bitpos */
1786 complain_overflow_dont, /* complain_on_overflow */
1787 NULL, /* special_function */
1788 "R_PPC_GNU_VTENTRY", /* name */
1789 FALSE, /* partial_inplace */
1790 0, /* src_mask */
1791 0, /* dst_mask */
1792 FALSE), /* pcrel_offset */
1793
1794 /* Phony reloc to handle AIX style TOC entries. */
1795 HOWTO (R_PPC_TOC16, /* type */
1796 0, /* rightshift */
1797 1, /* size (0 = byte, 1 = short, 2 = long) */
1798 16, /* bitsize */
1799 FALSE, /* pc_relative */
1800 0, /* bitpos */
1801 complain_overflow_signed, /* complain_on_overflow */
1802 ppc_elf_unhandled_reloc, /* special_function */
1803 "R_PPC_TOC16", /* name */
1804 FALSE, /* partial_inplace */
1805 0, /* src_mask */
1806 0xffff, /* dst_mask */
1807 FALSE), /* pcrel_offset */
1808};
1809
1810/* External 32-bit PPC structure for PRPSINFO. This structure is
1811 ABI-defined, thus we choose to use char arrays here in order to
1812 avoid dealing with different types in different architectures.
1813
1814 The PPC 32-bit structure uses int for `pr_uid' and `pr_gid' while
1815 most non-PPC architectures use `short int'.
1816
1817 This structure will ultimately be written in the corefile's note
1818 section, as the PRPSINFO. */
1819
1820struct elf_external_ppc_linux_prpsinfo32
1821 {
1822 char pr_state; /* Numeric process state. */
1823 char pr_sname; /* Char for pr_state. */
1824 char pr_zomb; /* Zombie. */
1825 char pr_nice; /* Nice val. */
1826 char pr_flag[4]; /* Flags. */
1827 char pr_uid[4];
1828 char pr_gid[4];
1829 char pr_pid[4];
1830 char pr_ppid[4];
1831 char pr_pgrp[4];
1832 char pr_sid[4];
1833 char pr_fname[16]; /* Filename of executable. */
1834 char pr_psargs[80]; /* Initial part of arg list. */
1835 };
1836
1837/* Helper function to copy an elf_internal_linux_prpsinfo in host
1838 endian to an elf_external_ppc_linux_prpsinfo32 in target endian. */
1839
1840static inline void
1841swap_ppc_linux_prpsinfo32_out (bfd *obfd,
1842 const struct elf_internal_linux_prpsinfo *from,
1843 struct elf_external_ppc_linux_prpsinfo32 *to)
1844{
1845 bfd_put_8 (obfd, from->pr_state, &to->pr_state);
1846 bfd_put_8 (obfd, from->pr_sname, &to->pr_sname);
1847 bfd_put_8 (obfd, from->pr_zomb, &to->pr_zomb);
1848 bfd_put_8 (obfd, from->pr_nice, &to->pr_nice);
1849 bfd_put_32 (obfd, from->pr_flag, to->pr_flag);
1850 bfd_put_32 (obfd, from->pr_uid, to->pr_uid);
1851 bfd_put_32 (obfd, from->pr_gid, to->pr_gid);
1852 bfd_put_32 (obfd, from->pr_pid, to->pr_pid);
1853 bfd_put_32 (obfd, from->pr_ppid, to->pr_ppid);
1854 bfd_put_32 (obfd, from->pr_pgrp, to->pr_pgrp);
1855 bfd_put_32 (obfd, from->pr_sid, to->pr_sid);
1856 strncpy (to->pr_fname, from->pr_fname, sizeof (to->pr_fname));
1857 strncpy (to->pr_psargs, from->pr_psargs, sizeof (to->pr_psargs));
1858}
1859\f
1860/* Initialize the ppc_elf_howto_table, so that linear accesses can be done. */
1861
1862static void
1863ppc_elf_howto_init (void)
1864{
1865 unsigned int i, type;
1866
1867 for (i = 0;
1868 i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]);
1869 i++)
1870 {
1871 type = ppc_elf_howto_raw[i].type;
1872 if (type >= (sizeof (ppc_elf_howto_table)
1873 / sizeof (ppc_elf_howto_table[0])))
1874 abort ();
1875 ppc_elf_howto_table[type] = &ppc_elf_howto_raw[i];
1876 }
1877}
1878
1879static reloc_howto_type *
1880ppc_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1881 bfd_reloc_code_real_type code)
1882{
1883 enum elf_ppc_reloc_type r;
1884
1885 /* Initialize howto table if not already done. */
1886 if (!ppc_elf_howto_table[R_PPC_ADDR32])
1887 ppc_elf_howto_init ();
1888
1889 switch (code)
1890 {
1891 default:
1892 return NULL;
1893
1894 case BFD_RELOC_NONE: r = R_PPC_NONE; break;
1895 case BFD_RELOC_32: r = R_PPC_ADDR32; break;
1896 case BFD_RELOC_PPC_BA26: r = R_PPC_ADDR24; break;
1897 case BFD_RELOC_PPC64_ADDR16_DS:
1898 case BFD_RELOC_16: r = R_PPC_ADDR16; break;
1899 case BFD_RELOC_PPC64_ADDR16_LO_DS:
1900 case BFD_RELOC_LO16: r = R_PPC_ADDR16_LO; break;
1901 case BFD_RELOC_HI16: r = R_PPC_ADDR16_HI; break;
1902 case BFD_RELOC_HI16_S: r = R_PPC_ADDR16_HA; break;
1903 case BFD_RELOC_PPC_BA16: r = R_PPC_ADDR14; break;
1904 case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC_ADDR14_BRTAKEN; break;
1905 case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC_ADDR14_BRNTAKEN; break;
1906 case BFD_RELOC_PPC_B26: r = R_PPC_REL24; break;
1907 case BFD_RELOC_PPC_B16: r = R_PPC_REL14; break;
1908 case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC_REL14_BRTAKEN; break;
1909 case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC_REL14_BRNTAKEN; break;
1910 case BFD_RELOC_PPC64_GOT16_DS:
1911 case BFD_RELOC_16_GOTOFF: r = R_PPC_GOT16; break;
1912 case BFD_RELOC_PPC64_GOT16_LO_DS:
1913 case BFD_RELOC_LO16_GOTOFF: r = R_PPC_GOT16_LO; break;
1914 case BFD_RELOC_HI16_GOTOFF: r = R_PPC_GOT16_HI; break;
1915 case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC_GOT16_HA; break;
1916 case BFD_RELOC_24_PLT_PCREL: r = R_PPC_PLTREL24; break;
1917 case BFD_RELOC_PPC_COPY: r = R_PPC_COPY; break;
1918 case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC_GLOB_DAT; break;
1919 case BFD_RELOC_PPC_LOCAL24PC: r = R_PPC_LOCAL24PC; break;
1920 case BFD_RELOC_32_PCREL: r = R_PPC_REL32; break;
1921 case BFD_RELOC_32_PLTOFF: r = R_PPC_PLT32; break;
1922 case BFD_RELOC_32_PLT_PCREL: r = R_PPC_PLTREL32; break;
1923 case BFD_RELOC_PPC64_PLT16_LO_DS:
1924 case BFD_RELOC_LO16_PLTOFF: r = R_PPC_PLT16_LO; break;
1925 case BFD_RELOC_HI16_PLTOFF: r = R_PPC_PLT16_HI; break;
1926 case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC_PLT16_HA; break;
1927 case BFD_RELOC_GPREL16: r = R_PPC_SDAREL16; break;
1928 case BFD_RELOC_PPC64_SECTOFF_DS:
1929 case BFD_RELOC_16_BASEREL: r = R_PPC_SECTOFF; break;
1930 case BFD_RELOC_PPC64_SECTOFF_LO_DS:
1931 case BFD_RELOC_LO16_BASEREL: r = R_PPC_SECTOFF_LO; break;
1932 case BFD_RELOC_HI16_BASEREL: r = R_PPC_SECTOFF_HI; break;
1933 case BFD_RELOC_HI16_S_BASEREL: r = R_PPC_SECTOFF_HA; break;
1934 case BFD_RELOC_CTOR: r = R_PPC_ADDR32; break;
1935 case BFD_RELOC_PPC64_TOC16_DS:
1936 case BFD_RELOC_PPC_TOC16: r = R_PPC_TOC16; break;
1937 case BFD_RELOC_PPC_TLS: r = R_PPC_TLS; break;
1938 case BFD_RELOC_PPC_TLSGD: r = R_PPC_TLSGD; break;
1939 case BFD_RELOC_PPC_TLSLD: r = R_PPC_TLSLD; break;
1940 case BFD_RELOC_PPC_DTPMOD: r = R_PPC_DTPMOD32; break;
1941 case BFD_RELOC_PPC64_TPREL16_DS:
1942 case BFD_RELOC_PPC_TPREL16: r = R_PPC_TPREL16; break;
1943 case BFD_RELOC_PPC64_TPREL16_LO_DS:
1944 case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC_TPREL16_LO; break;
1945 case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC_TPREL16_HI; break;
1946 case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC_TPREL16_HA; break;
1947 case BFD_RELOC_PPC_TPREL: r = R_PPC_TPREL32; break;
1948 case BFD_RELOC_PPC64_DTPREL16_DS:
1949 case BFD_RELOC_PPC_DTPREL16: r = R_PPC_DTPREL16; break;
1950 case BFD_RELOC_PPC64_DTPREL16_LO_DS:
1951 case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC_DTPREL16_LO; break;
1952 case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC_DTPREL16_HI; break;
1953 case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC_DTPREL16_HA; break;
1954 case BFD_RELOC_PPC_DTPREL: r = R_PPC_DTPREL32; break;
1955 case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC_GOT_TLSGD16; break;
1956 case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC_GOT_TLSGD16_LO; break;
1957 case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC_GOT_TLSGD16_HI; break;
1958 case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC_GOT_TLSGD16_HA; break;
1959 case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC_GOT_TLSLD16; break;
1960 case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC_GOT_TLSLD16_LO; break;
1961 case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC_GOT_TLSLD16_HI; break;
1962 case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC_GOT_TLSLD16_HA; break;
1963 case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC_GOT_TPREL16; break;
1964 case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC_GOT_TPREL16_LO; break;
1965 case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC_GOT_TPREL16_HI; break;
1966 case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC_GOT_TPREL16_HA; break;
1967 case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC_GOT_DTPREL16; break;
1968 case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC_GOT_DTPREL16_LO; break;
1969 case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC_GOT_DTPREL16_HI; break;
1970 case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC_GOT_DTPREL16_HA; break;
1971 case BFD_RELOC_PPC_EMB_NADDR32: r = R_PPC_EMB_NADDR32; break;
1972 case BFD_RELOC_PPC_EMB_NADDR16: r = R_PPC_EMB_NADDR16; break;
1973 case BFD_RELOC_PPC_EMB_NADDR16_LO: r = R_PPC_EMB_NADDR16_LO; break;
1974 case BFD_RELOC_PPC_EMB_NADDR16_HI: r = R_PPC_EMB_NADDR16_HI; break;
1975 case BFD_RELOC_PPC_EMB_NADDR16_HA: r = R_PPC_EMB_NADDR16_HA; break;
1976 case BFD_RELOC_PPC_EMB_SDAI16: r = R_PPC_EMB_SDAI16; break;
1977 case BFD_RELOC_PPC_EMB_SDA2I16: r = R_PPC_EMB_SDA2I16; break;
1978 case BFD_RELOC_PPC_EMB_SDA2REL: r = R_PPC_EMB_SDA2REL; break;
1979 case BFD_RELOC_PPC_EMB_SDA21: r = R_PPC_EMB_SDA21; break;
1980 case BFD_RELOC_PPC_EMB_MRKREF: r = R_PPC_EMB_MRKREF; break;
1981 case BFD_RELOC_PPC_EMB_RELSEC16: r = R_PPC_EMB_RELSEC16; break;
1982 case BFD_RELOC_PPC_EMB_RELST_LO: r = R_PPC_EMB_RELST_LO; break;
1983 case BFD_RELOC_PPC_EMB_RELST_HI: r = R_PPC_EMB_RELST_HI; break;
1984 case BFD_RELOC_PPC_EMB_RELST_HA: r = R_PPC_EMB_RELST_HA; break;
1985 case BFD_RELOC_PPC_EMB_BIT_FLD: r = R_PPC_EMB_BIT_FLD; break;
1986 case BFD_RELOC_PPC_EMB_RELSDA: r = R_PPC_EMB_RELSDA; break;
1987 case BFD_RELOC_PPC_VLE_REL8: r = R_PPC_VLE_REL8; break;
1988 case BFD_RELOC_PPC_VLE_REL15: r = R_PPC_VLE_REL15; break;
1989 case BFD_RELOC_PPC_VLE_REL24: r = R_PPC_VLE_REL24; break;
1990 case BFD_RELOC_PPC_VLE_LO16A: r = R_PPC_VLE_LO16A; break;
1991 case BFD_RELOC_PPC_VLE_LO16D: r = R_PPC_VLE_LO16D; break;
1992 case BFD_RELOC_PPC_VLE_HI16A: r = R_PPC_VLE_HI16A; break;
1993 case BFD_RELOC_PPC_VLE_HI16D: r = R_PPC_VLE_HI16D; break;
1994 case BFD_RELOC_PPC_VLE_HA16A: r = R_PPC_VLE_HA16A; break;
1995 case BFD_RELOC_PPC_VLE_HA16D: r = R_PPC_VLE_HA16D; break;
1996 case BFD_RELOC_PPC_VLE_SDA21: r = R_PPC_VLE_SDA21; break;
1997 case BFD_RELOC_PPC_VLE_SDA21_LO: r = R_PPC_VLE_SDA21_LO; break;
1998 case BFD_RELOC_PPC_VLE_SDAREL_LO16A:
1999 r = R_PPC_VLE_SDAREL_LO16A;
2000 break;
2001 case BFD_RELOC_PPC_VLE_SDAREL_LO16D:
2002 r = R_PPC_VLE_SDAREL_LO16D;
2003 break;
2004 case BFD_RELOC_PPC_VLE_SDAREL_HI16A:
2005 r = R_PPC_VLE_SDAREL_HI16A;
2006 break;
2007 case BFD_RELOC_PPC_VLE_SDAREL_HI16D:
2008 r = R_PPC_VLE_SDAREL_HI16D;
2009 break;
2010 case BFD_RELOC_PPC_VLE_SDAREL_HA16A:
2011 r = R_PPC_VLE_SDAREL_HA16A;
2012 break;
2013 case BFD_RELOC_PPC_VLE_SDAREL_HA16D:
2014 r = R_PPC_VLE_SDAREL_HA16D;
2015 break;
2016 case BFD_RELOC_16_PCREL: r = R_PPC_REL16; break;
2017 case BFD_RELOC_LO16_PCREL: r = R_PPC_REL16_LO; break;
2018 case BFD_RELOC_HI16_PCREL: r = R_PPC_REL16_HI; break;
2019 case BFD_RELOC_HI16_S_PCREL: r = R_PPC_REL16_HA; break;
2020 case BFD_RELOC_PPC_16DX_HA: r = R_PPC_16DX_HA; break;
2021 case BFD_RELOC_PPC_REL16DX_HA: r = R_PPC_REL16DX_HA; break;
2022 case BFD_RELOC_VTABLE_INHERIT: r = R_PPC_GNU_VTINHERIT; break;
2023 case BFD_RELOC_VTABLE_ENTRY: r = R_PPC_GNU_VTENTRY; break;
2024 }
2025
2026 return ppc_elf_howto_table[r];
2027};
2028
2029static reloc_howto_type *
2030ppc_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
2031 const char *r_name)
2032{
2033 unsigned int i;
2034
2035 for (i = 0;
2036 i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]);
2037 i++)
2038 if (ppc_elf_howto_raw[i].name != NULL
2039 && strcasecmp (ppc_elf_howto_raw[i].name, r_name) == 0)
2040 return &ppc_elf_howto_raw[i];
2041
2042 return NULL;
2043}
2044
2045/* Set the howto pointer for a PowerPC ELF reloc. */
2046
2047static void
2048ppc_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED,
2049 arelent *cache_ptr,
2050 Elf_Internal_Rela *dst)
2051{
2052 unsigned int r_type;
2053
2054 /* Initialize howto table if not already done. */
2055 if (!ppc_elf_howto_table[R_PPC_ADDR32])
2056 ppc_elf_howto_init ();
2057
2058 r_type = ELF32_R_TYPE (dst->r_info);
2059 if (r_type >= R_PPC_max)
2060 {
2061 /* xgettext:c-format */
2062 _bfd_error_handler (_("%B: unrecognised PPC reloc number: %d"),
2063 abfd, r_type);
2064 bfd_set_error (bfd_error_bad_value);
2065 r_type = R_PPC_NONE;
2066 }
2067 cache_ptr->howto = ppc_elf_howto_table[r_type];
2068
2069 /* Just because the above assert didn't trigger doesn't mean that
2070 ELF32_R_TYPE (dst->r_info) is necessarily a valid relocation. */
2071 if (!cache_ptr->howto)
2072 {
2073 /* xgettext:c-format */
2074 _bfd_error_handler (_("%B: invalid relocation type %d"),
2075 abfd, r_type);
2076 bfd_set_error (bfd_error_bad_value);
2077
2078 cache_ptr->howto = ppc_elf_howto_table[R_PPC_NONE];
2079 }
2080}
2081
2082/* Handle the R_PPC_ADDR16_HA and R_PPC_REL16_HA relocs. */
2083
2084static bfd_reloc_status_type
2085ppc_elf_addr16_ha_reloc (bfd *abfd ATTRIBUTE_UNUSED,
2086 arelent *reloc_entry,
2087 asymbol *symbol,
2088 void *data ATTRIBUTE_UNUSED,
2089 asection *input_section,
2090 bfd *output_bfd,
2091 char **error_message ATTRIBUTE_UNUSED)
2092{
2093 enum elf_ppc_reloc_type r_type;
2094 long insn;
2095 bfd_size_type octets;
2096 bfd_vma value;
2097
2098 if (output_bfd != NULL)
2099 {
2100 reloc_entry->address += input_section->output_offset;
2101 return bfd_reloc_ok;
2102 }
2103
2104 reloc_entry->addend += 0x8000;
2105 r_type = reloc_entry->howto->type;
2106 if (r_type != R_PPC_REL16DX_HA)
2107 return bfd_reloc_continue;
2108
2109 value = 0;
2110 if (!bfd_is_com_section (symbol->section))
2111 value = symbol->value;
2112 value += (reloc_entry->addend
2113 + symbol->section->output_offset
2114 + symbol->section->output_section->vma);
2115 value -= (reloc_entry->address
2116 + input_section->output_offset
2117 + input_section->output_section->vma);
2118 value >>= 16;
2119
2120 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
2121 insn = bfd_get_32 (abfd, (bfd_byte *) data + octets);
2122 insn &= ~0x1fffc1;
2123 insn |= (value & 0xffc1) | ((value & 0x3e) << 15);
2124 bfd_put_32 (abfd, insn, (bfd_byte *) data + octets);
2125 return bfd_reloc_ok;
2126}
2127
2128static bfd_reloc_status_type
2129ppc_elf_unhandled_reloc (bfd *abfd,
2130 arelent *reloc_entry,
2131 asymbol *symbol,
2132 void *data,
2133 asection *input_section,
2134 bfd *output_bfd,
2135 char **error_message)
2136{
2137 /* If this is a relocatable link (output_bfd test tells us), just
2138 call the generic function. Any adjustment will be done at final
2139 link time. */
2140 if (output_bfd != NULL)
2141 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2142 input_section, output_bfd, error_message);
2143
2144 if (error_message != NULL)
2145 {
2146 static char buf[60];
2147 sprintf (buf, _("generic linker can't handle %s"),
2148 reloc_entry->howto->name);
2149 *error_message = buf;
2150 }
2151 return bfd_reloc_dangerous;
2152}
2153\f
2154/* Sections created by the linker. */
2155
2156typedef struct elf_linker_section
2157{
2158 /* Pointer to the bfd section. */
2159 asection *section;
2160 /* Section name. */
2161 const char *name;
2162 /* Associated bss section name. */
2163 const char *bss_name;
2164 /* Associated symbol name. */
2165 const char *sym_name;
2166 /* Associated symbol. */
2167 struct elf_link_hash_entry *sym;
2168} elf_linker_section_t;
2169
2170/* Linked list of allocated pointer entries. This hangs off of the
2171 symbol lists, and provides allows us to return different pointers,
2172 based on different addend's. */
2173
2174typedef struct elf_linker_section_pointers
2175{
2176 /* next allocated pointer for this symbol */
2177 struct elf_linker_section_pointers *next;
2178 /* offset of pointer from beginning of section */
2179 bfd_vma offset;
2180 /* addend used */
2181 bfd_vma addend;
2182 /* which linker section this is */
2183 elf_linker_section_t *lsect;
2184} elf_linker_section_pointers_t;
2185
2186struct ppc_elf_obj_tdata
2187{
2188 struct elf_obj_tdata elf;
2189
2190 /* A mapping from local symbols to offsets into the various linker
2191 sections added. This is index by the symbol index. */
2192 elf_linker_section_pointers_t **linker_section_pointers;
2193
2194 /* Flags used to auto-detect plt type. */
2195 unsigned int makes_plt_call : 1;
2196 unsigned int has_rel16 : 1;
2197};
2198
2199#define ppc_elf_tdata(bfd) \
2200 ((struct ppc_elf_obj_tdata *) (bfd)->tdata.any)
2201
2202#define elf_local_ptr_offsets(bfd) \
2203 (ppc_elf_tdata (bfd)->linker_section_pointers)
2204
2205#define is_ppc_elf(bfd) \
2206 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
2207 && elf_object_id (bfd) == PPC32_ELF_DATA)
2208
2209/* Override the generic function because we store some extras. */
2210
2211static bfd_boolean
2212ppc_elf_mkobject (bfd *abfd)
2213{
2214 return bfd_elf_allocate_object (abfd, sizeof (struct ppc_elf_obj_tdata),
2215 PPC32_ELF_DATA);
2216}
2217
2218/* When defaulting arch/mach, decode apuinfo to find a better match. */
2219
2220bfd_boolean
2221_bfd_elf_ppc_set_arch (bfd *abfd)
2222{
2223 unsigned long mach = 0;
2224 asection *s;
2225 unsigned char *contents;
2226
2227 if (abfd->arch_info->bits_per_word == 32
2228 && bfd_big_endian (abfd))
2229 {
2230
2231 for (s = abfd->sections; s != NULL; s = s->next)
2232 if ((elf_section_data (s)->this_hdr.sh_flags & SHF_PPC_VLE) != 0)
2233 break;
2234 if (s != NULL)
2235 mach = bfd_mach_ppc_vle;
2236 }
2237
2238 if (mach == 0)
2239 {
2240 s = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2241 if (s != NULL && bfd_malloc_and_get_section (abfd, s, &contents))
2242 {
2243 unsigned int apuinfo_size = bfd_get_32 (abfd, contents + 4);
2244 unsigned int i;
2245
2246 for (i = 20; i < apuinfo_size + 20 && i + 4 <= s->size; i += 4)
2247 {
2248 unsigned int val = bfd_get_32 (abfd, contents + i);
2249 switch (val >> 16)
2250 {
2251 case PPC_APUINFO_PMR:
2252 case PPC_APUINFO_RFMCI:
2253 if (mach == 0)
2254 mach = bfd_mach_ppc_titan;
2255 break;
2256
2257 case PPC_APUINFO_ISEL:
2258 case PPC_APUINFO_CACHELCK:
2259 if (mach == bfd_mach_ppc_titan)
2260 mach = bfd_mach_ppc_e500mc;
2261 break;
2262
2263 case PPC_APUINFO_SPE:
2264 case PPC_APUINFO_EFS:
2265 case PPC_APUINFO_BRLOCK:
2266 if (mach != bfd_mach_ppc_vle)
2267 mach = bfd_mach_ppc_e500;
2268 break;
2269
2270 case PPC_APUINFO_VLE:
2271 mach = bfd_mach_ppc_vle;
2272 break;
2273
2274 default:
2275 mach = -1ul;
2276 }
2277 }
2278 free (contents);
2279 }
2280 }
2281
2282 if (mach != 0 && mach != -1ul)
2283 {
2284 const bfd_arch_info_type *arch;
2285
2286 for (arch = abfd->arch_info->next; arch; arch = arch->next)
2287 if (arch->mach == mach)
2288 {
2289 abfd->arch_info = arch;
2290 break;
2291 }
2292 }
2293 return TRUE;
2294}
2295
2296/* Fix bad default arch selected for a 32 bit input bfd when the
2297 default is 64 bit. Also select arch based on apuinfo. */
2298
2299static bfd_boolean
2300ppc_elf_object_p (bfd *abfd)
2301{
2302 if (!abfd->arch_info->the_default)
2303 return TRUE;
2304
2305 if (abfd->arch_info->bits_per_word == 64)
2306 {
2307 Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd);
2308
2309 if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS32)
2310 {
2311 /* Relies on arch after 64 bit default being 32 bit default. */
2312 abfd->arch_info = abfd->arch_info->next;
2313 BFD_ASSERT (abfd->arch_info->bits_per_word == 32);
2314 }
2315 }
2316 return _bfd_elf_ppc_set_arch (abfd);
2317}
2318
2319/* Function to set whether a module needs the -mrelocatable bit set. */
2320
2321static bfd_boolean
2322ppc_elf_set_private_flags (bfd *abfd, flagword flags)
2323{
2324 BFD_ASSERT (!elf_flags_init (abfd)
2325 || elf_elfheader (abfd)->e_flags == flags);
2326
2327 elf_elfheader (abfd)->e_flags = flags;
2328 elf_flags_init (abfd) = TRUE;
2329 return TRUE;
2330}
2331
2332/* Support for core dump NOTE sections. */
2333
2334static bfd_boolean
2335ppc_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
2336{
2337 int offset;
2338 unsigned int size;
2339
2340 switch (note->descsz)
2341 {
2342 default:
2343 return FALSE;
2344
2345 case 268: /* Linux/PPC. */
2346 /* pr_cursig */
2347 elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12);
2348
2349 /* pr_pid */
2350 elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 24);
2351
2352 /* pr_reg */
2353 offset = 72;
2354 size = 192;
2355
2356 break;
2357 }
2358
2359 /* Make a ".reg/999" section. */
2360 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
2361 size, note->descpos + offset);
2362}
2363
2364static bfd_boolean
2365ppc_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
2366{
2367 switch (note->descsz)
2368 {
2369 default:
2370 return FALSE;
2371
2372 case 128: /* Linux/PPC elf_prpsinfo. */
2373 elf_tdata (abfd)->core->pid
2374 = bfd_get_32 (abfd, note->descdata + 16);
2375 elf_tdata (abfd)->core->program
2376 = _bfd_elfcore_strndup (abfd, note->descdata + 32, 16);
2377 elf_tdata (abfd)->core->command
2378 = _bfd_elfcore_strndup (abfd, note->descdata + 48, 80);
2379 }
2380
2381 /* Note that for some reason, a spurious space is tacked
2382 onto the end of the args in some (at least one anyway)
2383 implementations, so strip it off if it exists. */
2384
2385 {
2386 char *command = elf_tdata (abfd)->core->command;
2387 int n = strlen (command);
2388
2389 if (0 < n && command[n - 1] == ' ')
2390 command[n - 1] = '\0';
2391 }
2392
2393 return TRUE;
2394}
2395
2396char *
2397elfcore_write_ppc_linux_prpsinfo32
2398 (bfd *abfd,
2399 char *buf,
2400 int *bufsiz,
2401 const struct elf_internal_linux_prpsinfo *prpsinfo)
2402{
2403 struct elf_external_ppc_linux_prpsinfo32 data;
2404
2405 swap_ppc_linux_prpsinfo32_out (abfd, prpsinfo, &data);
2406 return elfcore_write_note (abfd, buf, bufsiz,
2407 "CORE", NT_PRPSINFO, &data, sizeof (data));
2408}
2409
2410static char *
2411ppc_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type, ...)
2412{
2413 switch (note_type)
2414 {
2415 default:
2416 return NULL;
2417
2418 case NT_PRPSINFO:
2419 {
2420 char data[128];
2421 va_list ap;
2422
2423 va_start (ap, note_type);
2424 memset (data, 0, sizeof (data));
2425 strncpy (data + 32, va_arg (ap, const char *), 16);
2426 strncpy (data + 48, va_arg (ap, const char *), 80);
2427 va_end (ap);
2428 return elfcore_write_note (abfd, buf, bufsiz,
2429 "CORE", note_type, data, sizeof (data));
2430 }
2431
2432 case NT_PRSTATUS:
2433 {
2434 char data[268];
2435 va_list ap;
2436 long pid;
2437 int cursig;
2438 const void *greg;
2439
2440 va_start (ap, note_type);
2441 memset (data, 0, 72);
2442 pid = va_arg (ap, long);
2443 bfd_put_32 (abfd, pid, data + 24);
2444 cursig = va_arg (ap, int);
2445 bfd_put_16 (abfd, cursig, data + 12);
2446 greg = va_arg (ap, const void *);
2447 memcpy (data + 72, greg, 192);
2448 memset (data + 264, 0, 4);
2449 va_end (ap);
2450 return elfcore_write_note (abfd, buf, bufsiz,
2451 "CORE", note_type, data, sizeof (data));
2452 }
2453 }
2454}
2455
2456static flagword
2457ppc_elf_lookup_section_flags (char *flag_name)
2458{
2459
2460 if (!strcmp (flag_name, "SHF_PPC_VLE"))
2461 return SHF_PPC_VLE;
2462
2463 return 0;
2464}
2465
2466/* Return address for Ith PLT stub in section PLT, for relocation REL
2467 or (bfd_vma) -1 if it should not be included. */
2468
2469static bfd_vma
2470ppc_elf_plt_sym_val (bfd_vma i ATTRIBUTE_UNUSED,
2471 const asection *plt ATTRIBUTE_UNUSED,
2472 const arelent *rel)
2473{
2474 return rel->address;
2475}
2476
2477/* Handle a PowerPC specific section when reading an object file. This
2478 is called when bfd_section_from_shdr finds a section with an unknown
2479 type. */
2480
2481static bfd_boolean
2482ppc_elf_section_from_shdr (bfd *abfd,
2483 Elf_Internal_Shdr *hdr,
2484 const char *name,
2485 int shindex)
2486{
2487 asection *newsect;
2488 flagword flags;
2489
2490 if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
2491 return FALSE;
2492
2493 newsect = hdr->bfd_section;
2494 flags = bfd_get_section_flags (abfd, newsect);
2495 if (hdr->sh_flags & SHF_EXCLUDE)
2496 flags |= SEC_EXCLUDE;
2497
2498 if (hdr->sh_type == SHT_ORDERED)
2499 flags |= SEC_SORT_ENTRIES;
2500
2501 bfd_set_section_flags (abfd, newsect, flags);
2502 return TRUE;
2503}
2504
2505/* Set up any other section flags and such that may be necessary. */
2506
2507static bfd_boolean
2508ppc_elf_fake_sections (bfd *abfd ATTRIBUTE_UNUSED,
2509 Elf_Internal_Shdr *shdr,
2510 asection *asect)
2511{
2512 if ((asect->flags & SEC_SORT_ENTRIES) != 0)
2513 shdr->sh_type = SHT_ORDERED;
2514
2515 return TRUE;
2516}
2517
2518/* If we have .sbss2 or .PPC.EMB.sbss0 output sections, we
2519 need to bump up the number of section headers. */
2520
2521static int
2522ppc_elf_additional_program_headers (bfd *abfd,
2523 struct bfd_link_info *info ATTRIBUTE_UNUSED)
2524{
2525 asection *s;
2526 int ret = 0;
2527
2528 s = bfd_get_section_by_name (abfd, ".sbss2");
2529 if (s != NULL && (s->flags & SEC_ALLOC) != 0)
2530 ++ret;
2531
2532 s = bfd_get_section_by_name (abfd, ".PPC.EMB.sbss0");
2533 if (s != NULL && (s->flags & SEC_ALLOC) != 0)
2534 ++ret;
2535
2536 return ret;
2537}
2538
2539/* Modify the segment map for VLE executables. */
2540
2541bfd_boolean
2542ppc_elf_modify_segment_map (bfd *abfd,
2543 struct bfd_link_info *info ATTRIBUTE_UNUSED)
2544{
2545 struct elf_segment_map *m;
2546
2547 /* At this point in the link, output sections have already been sorted by
2548 LMA and assigned to segments. All that is left to do is to ensure
2549 there is no mixing of VLE & non-VLE sections in a text segment.
2550 If we find that case, we split the segment.
2551 We maintain the original output section order. */
2552
2553 for (m = elf_seg_map (abfd); m != NULL; m = m->next)
2554 {
2555 struct elf_segment_map *n;
2556 bfd_size_type amt;
2557 unsigned int j, k;
2558 unsigned int p_flags;
2559
2560 if (m->p_type != PT_LOAD || m->count == 0)
2561 continue;
2562
2563 for (p_flags = PF_R, j = 0; j != m->count; ++j)
2564 {
2565 if ((m->sections[j]->flags & SEC_READONLY) == 0)
2566 p_flags |= PF_W;
2567 if ((m->sections[j]->flags & SEC_CODE) != 0)
2568 {
2569 p_flags |= PF_X;
2570 if ((elf_section_flags (m->sections[j]) & SHF_PPC_VLE) != 0)
2571 p_flags |= PF_PPC_VLE;
2572 break;
2573 }
2574 }
2575 if (j != m->count)
2576 while (++j != m->count)
2577 {
2578 unsigned int p_flags1 = PF_R;
2579
2580 if ((m->sections[j]->flags & SEC_READONLY) == 0)
2581 p_flags1 |= PF_W;
2582 if ((m->sections[j]->flags & SEC_CODE) != 0)
2583 {
2584 p_flags1 |= PF_X;
2585 if ((elf_section_flags (m->sections[j]) & SHF_PPC_VLE) != 0)
2586 p_flags1 |= PF_PPC_VLE;
2587 if (((p_flags1 ^ p_flags) & PF_PPC_VLE) != 0)
2588 break;
2589 }
2590 p_flags |= p_flags1;
2591 }
2592 /* If we're splitting a segment which originally contained rw
2593 sections then those sections might now only be in one of the
2594 two parts. So always set p_flags if splitting, even if we
2595 are being called for objcopy with p_flags_valid set. */
2596 if (j != m->count || !m->p_flags_valid)
2597 {
2598 m->p_flags_valid = 1;
2599 m->p_flags = p_flags;
2600 }
2601 if (j == m->count)
2602 continue;
2603
2604 /* Sections 0..j-1 stay in this (current) segment,
2605 the remainder are put in a new segment.
2606 The scan resumes with the new segment. */
2607
2608 amt = sizeof (struct elf_segment_map);
2609 amt += (m->count - j - 1) * sizeof (asection *);
2610 n = (struct elf_segment_map *) bfd_zalloc (abfd, amt);
2611 if (n == NULL)
2612 return FALSE;
2613
2614 n->p_type = PT_LOAD;
2615 n->count = m->count - j;
2616 for (k = 0; k < n->count; ++k)
2617 n->sections[k] = m->sections[j + k];
2618 m->count = j;
2619 m->p_size_valid = 0;
2620 n->next = m->next;
2621 m->next = n;
2622 }
2623
2624 return TRUE;
2625}
2626
2627/* Add extra PPC sections -- Note, for now, make .sbss2 and
2628 .PPC.EMB.sbss0 a normal section, and not a bss section so
2629 that the linker doesn't crater when trying to make more than
2630 2 sections. */
2631
2632static const struct bfd_elf_special_section ppc_elf_special_sections[] =
2633{
2634 { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, SHF_ALLOC + SHF_EXECINSTR },
2635 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2636 { STRING_COMMA_LEN (".sbss2"), -2, SHT_PROGBITS, SHF_ALLOC },
2637 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2638 { STRING_COMMA_LEN (".sdata2"), -2, SHT_PROGBITS, SHF_ALLOC },
2639 { STRING_COMMA_LEN (".tags"), 0, SHT_ORDERED, SHF_ALLOC },
2640 { STRING_COMMA_LEN (APUINFO_SECTION_NAME), 0, SHT_NOTE, 0 },
2641 { STRING_COMMA_LEN (".PPC.EMB.sbss0"), 0, SHT_PROGBITS, SHF_ALLOC },
2642 { STRING_COMMA_LEN (".PPC.EMB.sdata0"), 0, SHT_PROGBITS, SHF_ALLOC },
2643 { NULL, 0, 0, 0, 0 }
2644};
2645
2646/* This is what we want for new plt/got. */
2647static struct bfd_elf_special_section ppc_alt_plt =
2648 { STRING_COMMA_LEN (".plt"), 0, SHT_PROGBITS, SHF_ALLOC };
2649
2650static const struct bfd_elf_special_section *
2651ppc_elf_get_sec_type_attr (bfd *abfd ATTRIBUTE_UNUSED, asection *sec)
2652{
2653 const struct bfd_elf_special_section *ssect;
2654
2655 /* See if this is one of the special sections. */
2656 if (sec->name == NULL)
2657 return NULL;
2658
2659 ssect = _bfd_elf_get_special_section (sec->name, ppc_elf_special_sections,
2660 sec->use_rela_p);
2661 if (ssect != NULL)
2662 {
2663 if (ssect == ppc_elf_special_sections && (sec->flags & SEC_LOAD) != 0)
2664 ssect = &ppc_alt_plt;
2665 return ssect;
2666 }
2667
2668 return _bfd_elf_get_sec_type_attr (abfd, sec);
2669}
2670\f
2671/* Very simple linked list structure for recording apuinfo values. */
2672typedef struct apuinfo_list
2673{
2674 struct apuinfo_list *next;
2675 unsigned long value;
2676}
2677apuinfo_list;
2678
2679static apuinfo_list *head;
2680static bfd_boolean apuinfo_set;
2681
2682static void
2683apuinfo_list_init (void)
2684{
2685 head = NULL;
2686 apuinfo_set = FALSE;
2687}
2688
2689static void
2690apuinfo_list_add (unsigned long value)
2691{
2692 apuinfo_list *entry = head;
2693
2694 while (entry != NULL)
2695 {
2696 if (entry->value == value)
2697 return;
2698 entry = entry->next;
2699 }
2700
2701 entry = bfd_malloc (sizeof (* entry));
2702 if (entry == NULL)
2703 return;
2704
2705 entry->value = value;
2706 entry->next = head;
2707 head = entry;
2708}
2709
2710static unsigned
2711apuinfo_list_length (void)
2712{
2713 apuinfo_list *entry;
2714 unsigned long count;
2715
2716 for (entry = head, count = 0;
2717 entry;
2718 entry = entry->next)
2719 ++ count;
2720
2721 return count;
2722}
2723
2724static inline unsigned long
2725apuinfo_list_element (unsigned long number)
2726{
2727 apuinfo_list * entry;
2728
2729 for (entry = head;
2730 entry && number --;
2731 entry = entry->next)
2732 ;
2733
2734 return entry ? entry->value : 0;
2735}
2736
2737static void
2738apuinfo_list_finish (void)
2739{
2740 apuinfo_list *entry;
2741
2742 for (entry = head; entry;)
2743 {
2744 apuinfo_list *next = entry->next;
2745 free (entry);
2746 entry = next;
2747 }
2748
2749 head = NULL;
2750}
2751
2752/* Scan the input BFDs and create a linked list of
2753 the APUinfo values that will need to be emitted. */
2754
2755static void
2756ppc_elf_begin_write_processing (bfd *abfd, struct bfd_link_info *link_info)
2757{
2758 bfd *ibfd;
2759 asection *asec;
2760 char *buffer = NULL;
2761 bfd_size_type largest_input_size = 0;
2762 unsigned i;
2763 unsigned long length;
2764 const char *error_message = NULL;
2765
2766 if (link_info == NULL)
2767 return;
2768
2769 apuinfo_list_init ();
2770
2771 /* Read in the input sections contents. */
2772 for (ibfd = link_info->input_bfds; ibfd; ibfd = ibfd->link.next)
2773 {
2774 unsigned long datum;
2775
2776 asec = bfd_get_section_by_name (ibfd, APUINFO_SECTION_NAME);
2777 if (asec == NULL)
2778 continue;
2779
2780 /* xgettext:c-format */
2781 error_message = _("corrupt %s section in %B");
2782 length = asec->size;
2783 if (length < 20)
2784 goto fail;
2785
2786 apuinfo_set = TRUE;
2787 if (largest_input_size < asec->size)
2788 {
2789 if (buffer)
2790 free (buffer);
2791 largest_input_size = asec->size;
2792 buffer = bfd_malloc (largest_input_size);
2793 if (!buffer)
2794 return;
2795 }
2796
2797 if (bfd_seek (ibfd, asec->filepos, SEEK_SET) != 0
2798 || (bfd_bread (buffer, length, ibfd) != length))
2799 {
2800 /* xgettext:c-format */
2801 error_message = _("unable to read in %s section from %B");
2802 goto fail;
2803 }
2804
2805 /* Verify the contents of the header. Note - we have to
2806 extract the values this way in order to allow for a
2807 host whose endian-ness is different from the target. */
2808 datum = bfd_get_32 (ibfd, buffer);
2809 if (datum != sizeof APUINFO_LABEL)
2810 goto fail;
2811
2812 datum = bfd_get_32 (ibfd, buffer + 8);
2813 if (datum != 0x2)
2814 goto fail;
2815
2816 if (strcmp (buffer + 12, APUINFO_LABEL) != 0)
2817 goto fail;
2818
2819 /* Get the number of bytes used for apuinfo entries. */
2820 datum = bfd_get_32 (ibfd, buffer + 4);
2821 if (datum + 20 != length)
2822 goto fail;
2823
2824 /* Scan the apuinfo section, building a list of apuinfo numbers. */
2825 for (i = 0; i < datum; i += 4)
2826 apuinfo_list_add (bfd_get_32 (ibfd, buffer + 20 + i));
2827 }
2828
2829 error_message = NULL;
2830
2831 if (apuinfo_set)
2832 {
2833 /* Compute the size of the output section. */
2834 unsigned num_entries = apuinfo_list_length ();
2835
2836 /* Set the output section size, if it exists. */
2837 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2838
2839 if (asec && ! bfd_set_section_size (abfd, asec, 20 + num_entries * 4))
2840 {
2841 ibfd = abfd;
2842 /* xgettext:c-format */
2843 error_message = _("warning: unable to set size of %s section in %B");
2844 }
2845 }
2846
2847 fail:
2848 if (buffer)
2849 free (buffer);
2850
2851 if (error_message)
2852 _bfd_error_handler (error_message, ibfd, APUINFO_SECTION_NAME);
2853}
2854
2855/* Prevent the output section from accumulating the input sections'
2856 contents. We have already stored this in our linked list structure. */
2857
2858static bfd_boolean
2859ppc_elf_write_section (bfd *abfd ATTRIBUTE_UNUSED,
2860 struct bfd_link_info *link_info ATTRIBUTE_UNUSED,
2861 asection *asec,
2862 bfd_byte *contents ATTRIBUTE_UNUSED)
2863{
2864 return apuinfo_set && strcmp (asec->name, APUINFO_SECTION_NAME) == 0;
2865}
2866
2867/* Finally we can generate the output section. */
2868
2869static void
2870ppc_elf_final_write_processing (bfd *abfd, bfd_boolean linker ATTRIBUTE_UNUSED)
2871{
2872 bfd_byte *buffer;
2873 asection *asec;
2874 unsigned i;
2875 unsigned num_entries;
2876 bfd_size_type length;
2877
2878 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2879 if (asec == NULL)
2880 return;
2881
2882 if (!apuinfo_set)
2883 return;
2884
2885 length = asec->size;
2886 if (length < 20)
2887 return;
2888
2889 buffer = bfd_malloc (length);
2890 if (buffer == NULL)
2891 {
2892 _bfd_error_handler
2893 (_("failed to allocate space for new APUinfo section."));
2894 return;
2895 }
2896
2897 /* Create the apuinfo header. */
2898 num_entries = apuinfo_list_length ();
2899 bfd_put_32 (abfd, sizeof APUINFO_LABEL, buffer);
2900 bfd_put_32 (abfd, num_entries * 4, buffer + 4);
2901 bfd_put_32 (abfd, 0x2, buffer + 8);
2902 strcpy ((char *) buffer + 12, APUINFO_LABEL);
2903
2904 length = 20;
2905 for (i = 0; i < num_entries; i++)
2906 {
2907 bfd_put_32 (abfd, apuinfo_list_element (i), buffer + length);
2908 length += 4;
2909 }
2910
2911 if (length != asec->size)
2912 _bfd_error_handler (_("failed to compute new APUinfo section."));
2913
2914 if (! bfd_set_section_contents (abfd, asec, buffer, (file_ptr) 0, length))
2915 _bfd_error_handler (_("failed to install new APUinfo section."));
2916
2917 free (buffer);
2918
2919 apuinfo_list_finish ();
2920}
2921\f
2922static bfd_boolean
2923is_nonpic_glink_stub (bfd *abfd, asection *glink, bfd_vma off)
2924{
2925 bfd_byte buf[GLINK_ENTRY_SIZE];
2926
2927 if (!bfd_get_section_contents (abfd, glink, buf, off, GLINK_ENTRY_SIZE))
2928 return FALSE;
2929
2930 return ((bfd_get_32 (abfd, buf + 0) & 0xffff0000) == LIS_11
2931 && (bfd_get_32 (abfd, buf + 4) & 0xffff0000) == LWZ_11_11
2932 && bfd_get_32 (abfd, buf + 8) == MTCTR_11
2933 && bfd_get_32 (abfd, buf + 12) == BCTR);
2934}
2935
2936static bfd_boolean
2937section_covers_vma (bfd *abfd ATTRIBUTE_UNUSED, asection *section, void *ptr)
2938{
2939 bfd_vma vma = *(bfd_vma *) ptr;
2940 return ((section->flags & SEC_ALLOC) != 0
2941 && section->vma <= vma
2942 && vma < section->vma + section->size);
2943}
2944
2945static long
2946ppc_elf_get_synthetic_symtab (bfd *abfd, long symcount, asymbol **syms,
2947 long dynsymcount, asymbol **dynsyms,
2948 asymbol **ret)
2949{
2950 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
2951 asection *plt, *relplt, *dynamic, *glink;
2952 bfd_vma glink_vma = 0;
2953 bfd_vma resolv_vma = 0;
2954 bfd_vma stub_vma;
2955 asymbol *s;
2956 arelent *p;
2957 long count, i;
2958 size_t size;
2959 char *names;
2960 bfd_byte buf[4];
2961
2962 *ret = NULL;
2963
2964 if ((abfd->flags & (DYNAMIC | EXEC_P)) == 0)
2965 return 0;
2966
2967 if (dynsymcount <= 0)
2968 return 0;
2969
2970 relplt = bfd_get_section_by_name (abfd, ".rela.plt");
2971 if (relplt == NULL)
2972 return 0;
2973
2974 plt = bfd_get_section_by_name (abfd, ".plt");
2975 if (plt == NULL)
2976 return 0;
2977
2978 /* Call common code to handle old-style executable PLTs. */
2979 if (elf_section_flags (plt) & SHF_EXECINSTR)
2980 return _bfd_elf_get_synthetic_symtab (abfd, symcount, syms,
2981 dynsymcount, dynsyms, ret);
2982
2983 /* If this object was prelinked, the prelinker stored the address
2984 of .glink at got[1]. If it wasn't prelinked, got[1] will be zero. */
2985 dynamic = bfd_get_section_by_name (abfd, ".dynamic");
2986 if (dynamic != NULL)
2987 {
2988 bfd_byte *dynbuf, *extdyn, *extdynend;
2989 size_t extdynsize;
2990 void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *);
2991
2992 if (!bfd_malloc_and_get_section (abfd, dynamic, &dynbuf))
2993 return -1;
2994
2995 extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn;
2996 swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in;
2997
2998 extdyn = dynbuf;
2999 extdynend = extdyn + dynamic->size;
3000 for (; extdyn < extdynend; extdyn += extdynsize)
3001 {
3002 Elf_Internal_Dyn dyn;
3003 (*swap_dyn_in) (abfd, extdyn, &dyn);
3004
3005 if (dyn.d_tag == DT_NULL)
3006 break;
3007
3008 if (dyn.d_tag == DT_PPC_GOT)
3009 {
3010 unsigned int g_o_t = dyn.d_un.d_val;
3011 asection *got = bfd_get_section_by_name (abfd, ".got");
3012 if (got != NULL
3013 && bfd_get_section_contents (abfd, got, buf,
3014 g_o_t - got->vma + 4, 4))
3015 glink_vma = bfd_get_32 (abfd, buf);
3016 break;
3017 }
3018 }
3019 free (dynbuf);
3020 }
3021
3022 /* Otherwise we read the first plt entry. */
3023 if (glink_vma == 0)
3024 {
3025 if (bfd_get_section_contents (abfd, plt, buf, 0, 4))
3026 glink_vma = bfd_get_32 (abfd, buf);
3027 }
3028
3029 if (glink_vma == 0)
3030 return 0;
3031
3032 /* The .glink section usually does not survive the final
3033 link; search for the section (usually .text) where the
3034 glink stubs now reside. */
3035 glink = bfd_sections_find_if (abfd, section_covers_vma, &glink_vma);
3036 if (glink == NULL)
3037 return 0;
3038
3039 /* Determine glink PLT resolver by reading the relative branch
3040 from the first glink stub. */
3041 if (bfd_get_section_contents (abfd, glink, buf,
3042 glink_vma - glink->vma, 4))
3043 {
3044 unsigned int insn = bfd_get_32 (abfd, buf);
3045
3046 /* The first glink stub may either branch to the resolver ... */
3047 insn ^= B;
3048 if ((insn & ~0x3fffffc) == 0)
3049 resolv_vma = glink_vma + (insn ^ 0x2000000) - 0x2000000;
3050
3051 /* ... or fall through a bunch of NOPs. */
3052 else if ((insn ^ B ^ NOP) == 0)
3053 for (i = 4;
3054 bfd_get_section_contents (abfd, glink, buf,
3055 glink_vma - glink->vma + i, 4);
3056 i += 4)
3057 if (bfd_get_32 (abfd, buf) != NOP)
3058 {
3059 resolv_vma = glink_vma + i;
3060 break;
3061 }
3062 }
3063
3064 count = relplt->size / sizeof (Elf32_External_Rela);
3065 /* If the stubs are those for -shared/-pie then we might have
3066 multiple stubs for each plt entry. If that is the case then
3067 there is no way to associate stubs with their plt entries short
3068 of figuring out the GOT pointer value used in the stub. */
3069 if (!is_nonpic_glink_stub (abfd, glink,
3070 glink_vma - GLINK_ENTRY_SIZE - glink->vma))
3071 return 0;
3072
3073 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
3074 if (! (*slurp_relocs) (abfd, relplt, dynsyms, TRUE))
3075 return -1;
3076
3077 size = count * sizeof (asymbol);
3078 p = relplt->relocation;
3079 for (i = 0; i < count; i++, p++)
3080 {
3081 size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt");
3082 if (p->addend != 0)
3083 size += sizeof ("+0x") - 1 + 8;
3084 }
3085
3086 size += sizeof (asymbol) + sizeof ("__glink");
3087
3088 if (resolv_vma)
3089 size += sizeof (asymbol) + sizeof ("__glink_PLTresolve");
3090
3091 s = *ret = bfd_malloc (size);
3092 if (s == NULL)
3093 return -1;
3094
3095 stub_vma = glink_vma;
3096 names = (char *) (s + count + 1 + (resolv_vma != 0));
3097 p = relplt->relocation + count - 1;
3098 for (i = 0; i < count; i++)
3099 {
3100 size_t len;
3101
3102 *s = **p->sym_ptr_ptr;
3103 /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since
3104 we are defining a symbol, ensure one of them is set. */
3105 if ((s->flags & BSF_LOCAL) == 0)
3106 s->flags |= BSF_GLOBAL;
3107 s->flags |= BSF_SYNTHETIC;
3108 s->section = glink;
3109 stub_vma -= 16;
3110 if (strcmp ((*p->sym_ptr_ptr)->name, "__tls_get_addr_opt") == 0)
3111 stub_vma -= 32;
3112 s->value = stub_vma - glink->vma;
3113 s->name = names;
3114 s->udata.p = NULL;
3115 len = strlen ((*p->sym_ptr_ptr)->name);
3116 memcpy (names, (*p->sym_ptr_ptr)->name, len);
3117 names += len;
3118 if (p->addend != 0)
3119 {
3120 memcpy (names, "+0x", sizeof ("+0x") - 1);
3121 names += sizeof ("+0x") - 1;
3122 bfd_sprintf_vma (abfd, names, p->addend);
3123 names += strlen (names);
3124 }
3125 memcpy (names, "@plt", sizeof ("@plt"));
3126 names += sizeof ("@plt");
3127 ++s;
3128 --p;
3129 }
3130
3131 /* Add a symbol at the start of the glink branch table. */
3132 memset (s, 0, sizeof *s);
3133 s->the_bfd = abfd;
3134 s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
3135 s->section = glink;
3136 s->value = glink_vma - glink->vma;
3137 s->name = names;
3138 memcpy (names, "__glink", sizeof ("__glink"));
3139 names += sizeof ("__glink");
3140 s++;
3141 count++;
3142
3143 if (resolv_vma)
3144 {
3145 /* Add a symbol for the glink PLT resolver. */
3146 memset (s, 0, sizeof *s);
3147 s->the_bfd = abfd;
3148 s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
3149 s->section = glink;
3150 s->value = resolv_vma - glink->vma;
3151 s->name = names;
3152 memcpy (names, "__glink_PLTresolve", sizeof ("__glink_PLTresolve"));
3153 names += sizeof ("__glink_PLTresolve");
3154 s++;
3155 count++;
3156 }
3157
3158 return count;
3159}
3160\f
3161/* The following functions are specific to the ELF linker, while
3162 functions above are used generally. They appear in this file more
3163 or less in the order in which they are called. eg.
3164 ppc_elf_check_relocs is called early in the link process,
3165 ppc_elf_finish_dynamic_sections is one of the last functions
3166 called. */
3167
3168/* Track PLT entries needed for a given symbol. We might need more
3169 than one glink entry per symbol when generating a pic binary. */
3170struct plt_entry
3171{
3172 struct plt_entry *next;
3173
3174 /* -fPIC uses multiple GOT sections, one per file, called ".got2".
3175 This field stores the offset into .got2 used to initialise the
3176 GOT pointer reg. It will always be at least 32768. (Current
3177 gcc always uses an offset of 32768, but ld -r will pack .got2
3178 sections together resulting in larger offsets). */
3179 bfd_vma addend;
3180
3181 /* The .got2 section. */
3182 asection *sec;
3183
3184 /* PLT refcount or offset. */
3185 union
3186 {
3187 bfd_signed_vma refcount;
3188 bfd_vma offset;
3189 } plt;
3190
3191 /* .glink stub offset. */
3192 bfd_vma glink_offset;
3193};
3194
3195/* Of those relocs that might be copied as dynamic relocs, this function
3196 selects those that must be copied when linking a shared library,
3197 even when the symbol is local. */
3198
3199static int
3200must_be_dyn_reloc (struct bfd_link_info *info,
3201 enum elf_ppc_reloc_type r_type)
3202{
3203 switch (r_type)
3204 {
3205 default:
3206 return 1;
3207
3208 case R_PPC_REL24:
3209 case R_PPC_REL14:
3210 case R_PPC_REL14_BRTAKEN:
3211 case R_PPC_REL14_BRNTAKEN:
3212 case R_PPC_REL32:
3213 return 0;
3214
3215 case R_PPC_TPREL32:
3216 case R_PPC_TPREL16:
3217 case R_PPC_TPREL16_LO:
3218 case R_PPC_TPREL16_HI:
3219 case R_PPC_TPREL16_HA:
3220 return !bfd_link_executable (info);
3221 }
3222}
3223
3224/* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
3225 copying dynamic variables from a shared lib into an app's dynbss
3226 section, and instead use a dynamic relocation to point into the
3227 shared lib. */
3228#define ELIMINATE_COPY_RELOCS 1
3229
3230/* Used to track dynamic relocations for local symbols. */
3231struct ppc_dyn_relocs
3232{
3233 struct ppc_dyn_relocs *next;
3234
3235 /* The input section of the reloc. */
3236 asection *sec;
3237
3238 /* Total number of relocs copied for the input section. */
3239 unsigned int count : 31;
3240
3241 /* Whether this entry is for STT_GNU_IFUNC symbols. */
3242 unsigned int ifunc : 1;
3243};
3244
3245/* PPC ELF linker hash entry. */
3246
3247struct ppc_elf_link_hash_entry
3248{
3249 struct elf_link_hash_entry elf;
3250
3251 /* If this symbol is used in the linker created sections, the processor
3252 specific backend uses this field to map the field into the offset
3253 from the beginning of the section. */
3254 elf_linker_section_pointers_t *linker_section_pointer;
3255
3256 /* Track dynamic relocs copied for this symbol. */
3257 struct elf_dyn_relocs *dyn_relocs;
3258
3259 /* Contexts in which symbol is used in the GOT (or TOC).
3260 TLS_GD .. TLS_TLS bits are or'd into the mask as the
3261 corresponding relocs are encountered during check_relocs.
3262 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
3263 indicate the corresponding GOT entry type is not needed. */
3264#define TLS_GD 1 /* GD reloc. */
3265#define TLS_LD 2 /* LD reloc. */
3266#define TLS_TPREL 4 /* TPREL reloc, => IE. */
3267#define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
3268#define TLS_TLS 16 /* Any TLS reloc. */
3269#define TLS_TPRELGD 32 /* TPREL reloc resulting from GD->IE. */
3270#define PLT_IFUNC 64 /* STT_GNU_IFUNC. */
3271 char tls_mask;
3272
3273 /* Nonzero if we have seen a small data relocation referring to this
3274 symbol. */
3275 unsigned char has_sda_refs : 1;
3276
3277 /* Flag use of given relocations. */
3278 unsigned char has_addr16_ha : 1;
3279 unsigned char has_addr16_lo : 1;
3280};
3281
3282#define ppc_elf_hash_entry(ent) ((struct ppc_elf_link_hash_entry *) (ent))
3283
3284/* PPC ELF linker hash table. */
3285
3286struct ppc_elf_link_hash_table
3287{
3288 struct elf_link_hash_table elf;
3289
3290 /* Various options passed from the linker. */
3291 struct ppc_elf_params *params;
3292
3293 /* Short-cuts to get to dynamic linker sections. */
3294 asection *glink;
3295 asection *dynsbss;
3296 asection *relsbss;
3297 elf_linker_section_t sdata[2];
3298 asection *sbss;
3299 asection *glink_eh_frame;
3300
3301 /* The (unloaded but important) .rela.plt.unloaded on VxWorks. */
3302 asection *srelplt2;
3303
3304 /* Shortcut to __tls_get_addr. */
3305 struct elf_link_hash_entry *tls_get_addr;
3306
3307 /* The bfd that forced an old-style PLT. */
3308 bfd *old_bfd;
3309
3310 /* TLS local dynamic got entry handling. */
3311 union {
3312 bfd_signed_vma refcount;
3313 bfd_vma offset;
3314 } tlsld_got;
3315
3316 /* Offset of branch table to PltResolve function in glink. */
3317 bfd_vma glink_pltresolve;
3318
3319 /* Size of reserved GOT entries. */
3320 unsigned int got_header_size;
3321 /* Non-zero if allocating the header left a gap. */
3322 unsigned int got_gap;
3323
3324 /* The type of PLT we have chosen to use. */
3325 enum ppc_elf_plt_type plt_type;
3326
3327 /* True if the target system is VxWorks. */
3328 unsigned int is_vxworks:1;
3329
3330 /* The size of PLT entries. */
3331 int plt_entry_size;
3332 /* The distance between adjacent PLT slots. */
3333 int plt_slot_size;
3334 /* The size of the first PLT entry. */
3335 int plt_initial_entry_size;
3336
3337 /* Small local sym cache. */
3338 struct sym_cache sym_cache;
3339};
3340
3341/* Rename some of the generic section flags to better document how they
3342 are used for ppc32. The flags are only valid for ppc32 elf objects. */
3343
3344/* Nonzero if this section has TLS related relocations. */
3345#define has_tls_reloc sec_flg0
3346
3347/* Nonzero if this section has a call to __tls_get_addr. */
3348#define has_tls_get_addr_call sec_flg1
3349
3350/* Get the PPC ELF linker hash table from a link_info structure. */
3351
3352#define ppc_elf_hash_table(p) \
3353 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
3354 == PPC32_ELF_DATA ? ((struct ppc_elf_link_hash_table *) ((p)->hash)) : NULL)
3355
3356/* Create an entry in a PPC ELF linker hash table. */
3357
3358static struct bfd_hash_entry *
3359ppc_elf_link_hash_newfunc (struct bfd_hash_entry *entry,
3360 struct bfd_hash_table *table,
3361 const char *string)
3362{
3363 /* Allocate the structure if it has not already been allocated by a
3364 subclass. */
3365 if (entry == NULL)
3366 {
3367 entry = bfd_hash_allocate (table,
3368 sizeof (struct ppc_elf_link_hash_entry));
3369 if (entry == NULL)
3370 return entry;
3371 }
3372
3373 /* Call the allocation method of the superclass. */
3374 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
3375 if (entry != NULL)
3376 {
3377 ppc_elf_hash_entry (entry)->linker_section_pointer = NULL;
3378 ppc_elf_hash_entry (entry)->dyn_relocs = NULL;
3379 ppc_elf_hash_entry (entry)->tls_mask = 0;
3380 ppc_elf_hash_entry (entry)->has_sda_refs = 0;
3381 }
3382
3383 return entry;
3384}
3385
3386/* Create a PPC ELF linker hash table. */
3387
3388static struct bfd_link_hash_table *
3389ppc_elf_link_hash_table_create (bfd *abfd)
3390{
3391 struct ppc_elf_link_hash_table *ret;
3392 static struct ppc_elf_params default_params
3393 = { PLT_OLD, 0, 1, 0, 0, 12, 0, 0, 0 };
3394
3395 ret = bfd_zmalloc (sizeof (struct ppc_elf_link_hash_table));
3396 if (ret == NULL)
3397 return NULL;
3398
3399 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd,
3400 ppc_elf_link_hash_newfunc,
3401 sizeof (struct ppc_elf_link_hash_entry),
3402 PPC32_ELF_DATA))
3403 {
3404 free (ret);
3405 return NULL;
3406 }
3407
3408 ret->elf.init_plt_refcount.refcount = 0;
3409 ret->elf.init_plt_refcount.glist = NULL;
3410 ret->elf.init_plt_offset.offset = 0;
3411 ret->elf.init_plt_offset.glist = NULL;
3412
3413 ret->params = &default_params;
3414
3415 ret->sdata[0].name = ".sdata";
3416 ret->sdata[0].sym_name = "_SDA_BASE_";
3417 ret->sdata[0].bss_name = ".sbss";
3418
3419 ret->sdata[1].name = ".sdata2";
3420 ret->sdata[1].sym_name = "_SDA2_BASE_";
3421 ret->sdata[1].bss_name = ".sbss2";
3422
3423 ret->plt_entry_size = 12;
3424 ret->plt_slot_size = 8;
3425 ret->plt_initial_entry_size = 72;
3426
3427 return &ret->elf.root;
3428}
3429
3430/* Hook linker params into hash table. */
3431
3432void
3433ppc_elf_link_params (struct bfd_link_info *info, struct ppc_elf_params *params)
3434{
3435 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
3436
3437 if (htab)
3438 htab->params = params;
3439 params->pagesize_p2 = bfd_log2 (params->pagesize);
3440}
3441
3442/* Create .got and the related sections. */
3443
3444static bfd_boolean
3445ppc_elf_create_got (bfd *abfd, struct bfd_link_info *info)
3446{
3447 struct ppc_elf_link_hash_table *htab;
3448
3449 if (!_bfd_elf_create_got_section (abfd, info))
3450 return FALSE;
3451
3452 htab = ppc_elf_hash_table (info);
3453 if (!htab->is_vxworks)
3454 {
3455 /* The powerpc .got has a blrl instruction in it. Mark it
3456 executable. */
3457 flagword flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS
3458 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3459 if (!bfd_set_section_flags (abfd, htab->elf.sgot, flags))
3460 return FALSE;
3461 }
3462
3463 return TRUE;
3464}
3465
3466/* Create a special linker section, used for R_PPC_EMB_SDAI16 and
3467 R_PPC_EMB_SDA2I16 pointers. These sections become part of .sdata
3468 and .sdata2. Create _SDA_BASE_ and _SDA2_BASE too. */
3469
3470static bfd_boolean
3471ppc_elf_create_linker_section (bfd *abfd,
3472 struct bfd_link_info *info,
3473 flagword flags,
3474 elf_linker_section_t *lsect)
3475{
3476 asection *s;
3477
3478 flags |= (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
3479 | SEC_LINKER_CREATED);
3480
3481 s = bfd_make_section_anyway_with_flags (abfd, lsect->name, flags);
3482 if (s == NULL)
3483 return FALSE;
3484 lsect->section = s;
3485
3486 /* Define the sym on the first section of this name. */
3487 s = bfd_get_section_by_name (abfd, lsect->name);
3488
3489 lsect->sym = _bfd_elf_define_linkage_sym (abfd, info, s, lsect->sym_name);
3490 if (lsect->sym == NULL)
3491 return FALSE;
3492 lsect->sym->root.u.def.value = 0x8000;
3493 return TRUE;
3494}
3495
3496static bfd_boolean
3497ppc_elf_create_glink (bfd *abfd, struct bfd_link_info *info)
3498{
3499 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
3500 asection *s;
3501 flagword flags;
3502
3503 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY | SEC_HAS_CONTENTS
3504 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3505 s = bfd_make_section_anyway_with_flags (abfd, ".glink", flags);
3506 htab->glink = s;
3507 if (s == NULL
3508 || !bfd_set_section_alignment (abfd, s,
3509 htab->params->ppc476_workaround ? 6 : 4))
3510 return FALSE;
3511
3512 if (!info->no_ld_generated_unwind_info)
3513 {
3514 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
3515 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3516 s = bfd_make_section_anyway_with_flags (abfd, ".eh_frame", flags);
3517 htab->glink_eh_frame = s;
3518 if (s == NULL
3519 || !bfd_set_section_alignment (abfd, s, 2))
3520 return FALSE;
3521 }
3522
3523 flags = SEC_ALLOC | SEC_LINKER_CREATED;
3524 s = bfd_make_section_anyway_with_flags (abfd, ".iplt", flags);
3525 htab->elf.iplt = s;
3526 if (s == NULL
3527 || !bfd_set_section_alignment (abfd, s, 4))
3528 return FALSE;
3529
3530 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
3531 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3532 s = bfd_make_section_anyway_with_flags (abfd, ".rela.iplt", flags);
3533 htab->elf.irelplt = s;
3534 if (s == NULL
3535 || ! bfd_set_section_alignment (abfd, s, 2))
3536 return FALSE;
3537
3538 if (!ppc_elf_create_linker_section (abfd, info, 0,
3539 &htab->sdata[0]))
3540 return FALSE;
3541
3542 if (!ppc_elf_create_linker_section (abfd, info, SEC_READONLY,
3543 &htab->sdata[1]))
3544 return FALSE;
3545
3546 return TRUE;
3547}
3548
3549/* We have to create .dynsbss and .rela.sbss here so that they get mapped
3550 to output sections (just like _bfd_elf_create_dynamic_sections has
3551 to create .dynbss and .rela.bss). */
3552
3553static bfd_boolean
3554ppc_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
3555{
3556 struct ppc_elf_link_hash_table *htab;
3557 asection *s;
3558 flagword flags;
3559
3560 htab = ppc_elf_hash_table (info);
3561
3562 if (htab->elf.sgot == NULL
3563 && !ppc_elf_create_got (abfd, info))
3564 return FALSE;
3565
3566 if (!_bfd_elf_create_dynamic_sections (abfd, info))
3567 return FALSE;
3568
3569 if (htab->glink == NULL
3570 && !ppc_elf_create_glink (abfd, info))
3571 return FALSE;
3572
3573 s = bfd_make_section_anyway_with_flags (abfd, ".dynsbss",
3574 SEC_ALLOC | SEC_LINKER_CREATED);
3575 htab->dynsbss = s;
3576 if (s == NULL)
3577 return FALSE;
3578
3579 if (! bfd_link_pic (info))
3580 {
3581 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
3582 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3583 s = bfd_make_section_anyway_with_flags (abfd, ".rela.sbss", flags);
3584 htab->relsbss = s;
3585 if (s == NULL
3586 || ! bfd_set_section_alignment (abfd, s, 2))
3587 return FALSE;
3588 }
3589
3590 if (htab->is_vxworks
3591 && !elf_vxworks_create_dynamic_sections (abfd, info, &htab->srelplt2))
3592 return FALSE;
3593
3594 s = htab->elf.splt;
3595 flags = SEC_ALLOC | SEC_CODE | SEC_LINKER_CREATED;
3596 if (htab->plt_type == PLT_VXWORKS)
3597 /* The VxWorks PLT is a loaded section with contents. */
3598 flags |= SEC_HAS_CONTENTS | SEC_LOAD | SEC_READONLY;
3599 return bfd_set_section_flags (abfd, s, flags);
3600}
3601
3602/* Copy the extra info we tack onto an elf_link_hash_entry. */
3603
3604static void
3605ppc_elf_copy_indirect_symbol (struct bfd_link_info *info,
3606 struct elf_link_hash_entry *dir,
3607 struct elf_link_hash_entry *ind)
3608{
3609 struct ppc_elf_link_hash_entry *edir, *eind;
3610
3611 edir = (struct ppc_elf_link_hash_entry *) dir;
3612 eind = (struct ppc_elf_link_hash_entry *) ind;
3613
3614 edir->tls_mask |= eind->tls_mask;
3615 edir->has_sda_refs |= eind->has_sda_refs;
3616
3617 /* If called to transfer flags for a weakdef during processing
3618 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
3619 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
3620 if (!(ELIMINATE_COPY_RELOCS
3621 && eind->elf.root.type != bfd_link_hash_indirect
3622 && edir->elf.dynamic_adjusted))
3623 edir->elf.non_got_ref |= eind->elf.non_got_ref;
3624
3625 if (edir->elf.versioned != versioned_hidden)
3626 edir->elf.ref_dynamic |= eind->elf.ref_dynamic;
3627 edir->elf.ref_regular |= eind->elf.ref_regular;
3628 edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak;
3629 edir->elf.needs_plt |= eind->elf.needs_plt;
3630 edir->elf.pointer_equality_needed |= eind->elf.pointer_equality_needed;
3631
3632 if (eind->dyn_relocs != NULL)
3633 {
3634 if (edir->dyn_relocs != NULL)
3635 {
3636 struct elf_dyn_relocs **pp;
3637 struct elf_dyn_relocs *p;
3638
3639 /* Add reloc counts against the indirect sym to the direct sym
3640 list. Merge any entries against the same section. */
3641 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
3642 {
3643 struct elf_dyn_relocs *q;
3644
3645 for (q = edir->dyn_relocs; q != NULL; q = q->next)
3646 if (q->sec == p->sec)
3647 {
3648 q->pc_count += p->pc_count;
3649 q->count += p->count;
3650 *pp = p->next;
3651 break;
3652 }
3653 if (q == NULL)
3654 pp = &p->next;
3655 }
3656 *pp = edir->dyn_relocs;
3657 }
3658
3659 edir->dyn_relocs = eind->dyn_relocs;
3660 eind->dyn_relocs = NULL;
3661 }
3662
3663 /* If we were called to copy over info for a weak sym, that's all.
3664 You might think dyn_relocs need not be copied over; After all,
3665 both syms will be dynamic or both non-dynamic so we're just
3666 moving reloc accounting around. However, ELIMINATE_COPY_RELOCS
3667 code in ppc_elf_adjust_dynamic_symbol needs to check for
3668 dyn_relocs in read-only sections, and it does so on what is the
3669 DIR sym here. */
3670 if (eind->elf.root.type != bfd_link_hash_indirect)
3671 return;
3672
3673 /* Copy over the GOT refcount entries that we may have already seen to
3674 the symbol which just became indirect. */
3675 edir->elf.got.refcount += eind->elf.got.refcount;
3676 eind->elf.got.refcount = 0;
3677
3678 /* And plt entries. */
3679 if (eind->elf.plt.plist != NULL)
3680 {
3681 if (edir->elf.plt.plist != NULL)
3682 {
3683 struct plt_entry **entp;
3684 struct plt_entry *ent;
3685
3686 for (entp = &eind->elf.plt.plist; (ent = *entp) != NULL; )
3687 {
3688 struct plt_entry *dent;
3689
3690 for (dent = edir->elf.plt.plist; dent != NULL; dent = dent->next)
3691 if (dent->sec == ent->sec && dent->addend == ent->addend)
3692 {
3693 dent->plt.refcount += ent->plt.refcount;
3694 *entp = ent->next;
3695 break;
3696 }
3697 if (dent == NULL)
3698 entp = &ent->next;
3699 }
3700 *entp = edir->elf.plt.plist;
3701 }
3702
3703 edir->elf.plt.plist = eind->elf.plt.plist;
3704 eind->elf.plt.plist = NULL;
3705 }
3706
3707 if (eind->elf.dynindx != -1)
3708 {
3709 if (edir->elf.dynindx != -1)
3710 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
3711 edir->elf.dynstr_index);
3712 edir->elf.dynindx = eind->elf.dynindx;
3713 edir->elf.dynstr_index = eind->elf.dynstr_index;
3714 eind->elf.dynindx = -1;
3715 eind->elf.dynstr_index = 0;
3716 }
3717}
3718
3719/* Hook called by the linker routine which adds symbols from an object
3720 file. We use it to put .comm items in .sbss, and not .bss. */
3721
3722static bfd_boolean
3723ppc_elf_add_symbol_hook (bfd *abfd,
3724 struct bfd_link_info *info,
3725 Elf_Internal_Sym *sym,
3726 const char **namep ATTRIBUTE_UNUSED,
3727 flagword *flagsp ATTRIBUTE_UNUSED,
3728 asection **secp,
3729 bfd_vma *valp)
3730{
3731 if (sym->st_shndx == SHN_COMMON
3732 && !bfd_link_relocatable (info)
3733 && is_ppc_elf (info->output_bfd)
3734 && sym->st_size <= elf_gp_size (abfd))
3735 {
3736 /* Common symbols less than or equal to -G nn bytes are automatically
3737 put into .sbss. */
3738 struct ppc_elf_link_hash_table *htab;
3739
3740 htab = ppc_elf_hash_table (info);
3741 if (htab->sbss == NULL)
3742 {
3743 flagword flags = SEC_IS_COMMON | SEC_LINKER_CREATED;
3744
3745 if (!htab->elf.dynobj)
3746 htab->elf.dynobj = abfd;
3747
3748 htab->sbss = bfd_make_section_anyway_with_flags (htab->elf.dynobj,
3749 ".sbss",
3750 flags);
3751 if (htab->sbss == NULL)
3752 return FALSE;
3753 }
3754
3755 *secp = htab->sbss;
3756 *valp = sym->st_size;
3757 }
3758
3759 if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC
3760 && (abfd->flags & DYNAMIC) == 0
3761 && bfd_get_flavour (info->output_bfd) == bfd_target_elf_flavour)
3762 elf_tdata (info->output_bfd)->has_gnu_symbols |= elf_gnu_symbol_ifunc;
3763
3764 return TRUE;
3765}
3766\f
3767/* Find a linker generated pointer with a given addend and type. */
3768
3769static elf_linker_section_pointers_t *
3770elf_find_pointer_linker_section
3771 (elf_linker_section_pointers_t *linker_pointers,
3772 bfd_vma addend,
3773 elf_linker_section_t *lsect)
3774{
3775 for ( ; linker_pointers != NULL; linker_pointers = linker_pointers->next)
3776 if (lsect == linker_pointers->lsect && addend == linker_pointers->addend)
3777 return linker_pointers;
3778
3779 return NULL;
3780}
3781
3782/* Allocate a pointer to live in a linker created section. */
3783
3784static bfd_boolean
3785elf_allocate_pointer_linker_section (bfd *abfd,
3786 elf_linker_section_t *lsect,
3787 struct elf_link_hash_entry *h,
3788 const Elf_Internal_Rela *rel)
3789{
3790 elf_linker_section_pointers_t **ptr_linker_section_ptr = NULL;
3791 elf_linker_section_pointers_t *linker_section_ptr;
3792 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
3793 bfd_size_type amt;
3794
3795 BFD_ASSERT (lsect != NULL);
3796
3797 /* Is this a global symbol? */
3798 if (h != NULL)
3799 {
3800 struct ppc_elf_link_hash_entry *eh;
3801
3802 /* Has this symbol already been allocated? If so, our work is done. */
3803 eh = (struct ppc_elf_link_hash_entry *) h;
3804 if (elf_find_pointer_linker_section (eh->linker_section_pointer,
3805 rel->r_addend,
3806 lsect))
3807 return TRUE;
3808
3809 ptr_linker_section_ptr = &eh->linker_section_pointer;
3810 }
3811 else
3812 {
3813 BFD_ASSERT (is_ppc_elf (abfd));
3814
3815 /* Allocation of a pointer to a local symbol. */
3816 elf_linker_section_pointers_t **ptr = elf_local_ptr_offsets (abfd);
3817
3818 /* Allocate a table to hold the local symbols if first time. */
3819 if (!ptr)
3820 {
3821 unsigned int num_symbols = elf_symtab_hdr (abfd).sh_info;
3822
3823 amt = num_symbols;
3824 amt *= sizeof (elf_linker_section_pointers_t *);
3825 ptr = bfd_zalloc (abfd, amt);
3826
3827 if (!ptr)
3828 return FALSE;
3829
3830 elf_local_ptr_offsets (abfd) = ptr;
3831 }
3832
3833 /* Has this symbol already been allocated? If so, our work is done. */
3834 if (elf_find_pointer_linker_section (ptr[r_symndx],
3835 rel->r_addend,
3836 lsect))
3837 return TRUE;
3838
3839 ptr_linker_section_ptr = &ptr[r_symndx];
3840 }
3841
3842 /* Allocate space for a pointer in the linker section, and allocate
3843 a new pointer record from internal memory. */
3844 BFD_ASSERT (ptr_linker_section_ptr != NULL);
3845 amt = sizeof (elf_linker_section_pointers_t);
3846 linker_section_ptr = bfd_alloc (abfd, amt);
3847
3848 if (!linker_section_ptr)
3849 return FALSE;
3850
3851 linker_section_ptr->next = *ptr_linker_section_ptr;
3852 linker_section_ptr->addend = rel->r_addend;
3853 linker_section_ptr->lsect = lsect;
3854 *ptr_linker_section_ptr = linker_section_ptr;
3855
3856 if (!bfd_set_section_alignment (lsect->section->owner, lsect->section, 2))
3857 return FALSE;
3858 linker_section_ptr->offset = lsect->section->size;
3859 lsect->section->size += 4;
3860
3861#ifdef DEBUG
3862 fprintf (stderr,
3863 "Create pointer in linker section %s, offset = %ld, section size = %ld\n",
3864 lsect->name, (long) linker_section_ptr->offset,
3865 (long) lsect->section->size);
3866#endif
3867
3868 return TRUE;
3869}
3870
3871static struct plt_entry **
3872update_local_sym_info (bfd *abfd,
3873 Elf_Internal_Shdr *symtab_hdr,
3874 unsigned long r_symndx,
3875 int tls_type)
3876{
3877 bfd_signed_vma *local_got_refcounts = elf_local_got_refcounts (abfd);
3878 struct plt_entry **local_plt;
3879 char *local_got_tls_masks;
3880
3881 if (local_got_refcounts == NULL)
3882 {
3883 bfd_size_type size = symtab_hdr->sh_info;
3884
3885 size *= (sizeof (*local_got_refcounts)
3886 + sizeof (*local_plt)
3887 + sizeof (*local_got_tls_masks));
3888 local_got_refcounts = bfd_zalloc (abfd, size);
3889 if (local_got_refcounts == NULL)
3890 return NULL;
3891 elf_local_got_refcounts (abfd) = local_got_refcounts;
3892 }
3893
3894 local_plt = (struct plt_entry **) (local_got_refcounts + symtab_hdr->sh_info);
3895 local_got_tls_masks = (char *) (local_plt + symtab_hdr->sh_info);
3896 local_got_tls_masks[r_symndx] |= tls_type;
3897 if (tls_type != PLT_IFUNC)
3898 local_got_refcounts[r_symndx] += 1;
3899 return local_plt + r_symndx;
3900}
3901
3902static bfd_boolean
3903update_plt_info (bfd *abfd, struct plt_entry **plist,
3904 asection *sec, bfd_vma addend)
3905{
3906 struct plt_entry *ent;
3907
3908 if (addend < 32768)
3909 sec = NULL;
3910 for (ent = *plist; ent != NULL; ent = ent->next)
3911 if (ent->sec == sec && ent->addend == addend)
3912 break;
3913 if (ent == NULL)
3914 {
3915 bfd_size_type amt = sizeof (*ent);
3916 ent = bfd_alloc (abfd, amt);
3917 if (ent == NULL)
3918 return FALSE;
3919 ent->next = *plist;
3920 ent->sec = sec;
3921 ent->addend = addend;
3922 ent->plt.refcount = 0;
3923 *plist = ent;
3924 }
3925 ent->plt.refcount += 1;
3926 return TRUE;
3927}
3928
3929static struct plt_entry *
3930find_plt_ent (struct plt_entry **plist, asection *sec, bfd_vma addend)
3931{
3932 struct plt_entry *ent;
3933
3934 if (addend < 32768)
3935 sec = NULL;
3936 for (ent = *plist; ent != NULL; ent = ent->next)
3937 if (ent->sec == sec && ent->addend == addend)
3938 break;
3939 return ent;
3940}
3941
3942static bfd_boolean
3943is_branch_reloc (enum elf_ppc_reloc_type r_type)
3944{
3945 return (r_type == R_PPC_PLTREL24
3946 || r_type == R_PPC_LOCAL24PC
3947 || r_type == R_PPC_REL24
3948 || r_type == R_PPC_REL14
3949 || r_type == R_PPC_REL14_BRTAKEN
3950 || r_type == R_PPC_REL14_BRNTAKEN
3951 || r_type == R_PPC_ADDR24
3952 || r_type == R_PPC_ADDR14
3953 || r_type == R_PPC_ADDR14_BRTAKEN
3954 || r_type == R_PPC_ADDR14_BRNTAKEN
3955 || r_type == R_PPC_VLE_REL24);
3956}
3957
3958static void
3959bad_shared_reloc (bfd *abfd, enum elf_ppc_reloc_type r_type)
3960{
3961 _bfd_error_handler
3962 /* xgettext:c-format */
3963 (_("%B: relocation %s cannot be used when making a shared object"),
3964 abfd,
3965 ppc_elf_howto_table[r_type]->name);
3966 bfd_set_error (bfd_error_bad_value);
3967}
3968
3969/* Look through the relocs for a section during the first phase, and
3970 allocate space in the global offset table or procedure linkage
3971 table. */
3972
3973static bfd_boolean
3974ppc_elf_check_relocs (bfd *abfd,
3975 struct bfd_link_info *info,
3976 asection *sec,
3977 const Elf_Internal_Rela *relocs)
3978{
3979 struct ppc_elf_link_hash_table *htab;
3980 Elf_Internal_Shdr *symtab_hdr;
3981 struct elf_link_hash_entry **sym_hashes;
3982 const Elf_Internal_Rela *rel;
3983 const Elf_Internal_Rela *rel_end;
3984 asection *got2, *sreloc;
3985 struct elf_link_hash_entry *tga;
3986
3987 if (bfd_link_relocatable (info))
3988 return TRUE;
3989
3990 /* Don't do anything special with non-loaded, non-alloced sections.
3991 In particular, any relocs in such sections should not affect GOT
3992 and PLT reference counting (ie. we don't allow them to create GOT
3993 or PLT entries), there's no possibility or desire to optimize TLS
3994 relocs, and there's not much point in propagating relocs to shared
3995 libs that the dynamic linker won't relocate. */
3996 if ((sec->flags & SEC_ALLOC) == 0)
3997 return TRUE;
3998
3999#ifdef DEBUG
4000 _bfd_error_handler ("ppc_elf_check_relocs called for section %A in %B",
4001 sec, abfd);
4002#endif
4003
4004 BFD_ASSERT (is_ppc_elf (abfd));
4005
4006 /* Initialize howto table if not already done. */
4007 if (!ppc_elf_howto_table[R_PPC_ADDR32])
4008 ppc_elf_howto_init ();
4009
4010 htab = ppc_elf_hash_table (info);
4011 if (htab->glink == NULL)
4012 {
4013 if (htab->elf.dynobj == NULL)
4014 htab->elf.dynobj = abfd;
4015 if (!ppc_elf_create_glink (htab->elf.dynobj, info))
4016 return FALSE;
4017 }
4018 tga = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
4019 FALSE, FALSE, TRUE);
4020 symtab_hdr = &elf_symtab_hdr (abfd);
4021 sym_hashes = elf_sym_hashes (abfd);
4022 got2 = bfd_get_section_by_name (abfd, ".got2");
4023 sreloc = NULL;
4024
4025 rel_end = relocs + sec->reloc_count;
4026 for (rel = relocs; rel < rel_end; rel++)
4027 {
4028 unsigned long r_symndx;
4029 enum elf_ppc_reloc_type r_type;
4030 struct elf_link_hash_entry *h;
4031 int tls_type;
4032 struct plt_entry **ifunc;
4033
4034 r_symndx = ELF32_R_SYM (rel->r_info);
4035 if (r_symndx < symtab_hdr->sh_info)
4036 h = NULL;
4037 else
4038 {
4039 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4040 while (h->root.type == bfd_link_hash_indirect
4041 || h->root.type == bfd_link_hash_warning)
4042 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4043
4044 /* PR15323, ref flags aren't set for references in the same
4045 object. */
4046 h->root.non_ir_ref = 1;
4047 }
4048
4049 /* If a relocation refers to _GLOBAL_OFFSET_TABLE_, create the .got.
4050 This shows up in particular in an R_PPC_ADDR32 in the eabi
4051 startup code. */
4052 if (h != NULL
4053 && htab->elf.sgot == NULL
4054 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
4055 {
4056 if (htab->elf.dynobj == NULL)
4057 htab->elf.dynobj = abfd;
4058 if (!ppc_elf_create_got (htab->elf.dynobj, info))
4059 return FALSE;
4060 BFD_ASSERT (h == htab->elf.hgot);
4061 }
4062
4063 tls_type = 0;
4064 r_type = ELF32_R_TYPE (rel->r_info);
4065 ifunc = NULL;
4066 if (h == NULL && !htab->is_vxworks)
4067 {
4068 Elf_Internal_Sym *isym = bfd_sym_from_r_symndx (&htab->sym_cache,
4069 abfd, r_symndx);
4070 if (isym == NULL)
4071 return FALSE;
4072
4073 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
4074 {
4075 /* Set PLT_IFUNC flag for this sym, no GOT entry yet. */
4076 ifunc = update_local_sym_info (abfd, symtab_hdr, r_symndx,
4077 PLT_IFUNC);
4078 if (ifunc == NULL)
4079 return FALSE;
4080
4081 /* STT_GNU_IFUNC symbols must have a PLT entry;
4082 In a non-pie executable even when there are
4083 no plt calls. */
4084 if (!bfd_link_pic (info)
4085 || is_branch_reloc (r_type))
4086 {
4087 bfd_vma addend = 0;
4088 if (r_type == R_PPC_PLTREL24)
4089 {
4090 ppc_elf_tdata (abfd)->makes_plt_call = 1;
4091 if (bfd_link_pic (info))
4092 addend = rel->r_addend;
4093 }
4094 if (!update_plt_info (abfd, ifunc, got2, addend))
4095 return FALSE;
4096 }
4097 }
4098 }
4099
4100 if (!htab->is_vxworks
4101 && is_branch_reloc (r_type)
4102 && h != NULL
4103 && h == tga)
4104 {
4105 if (rel != relocs
4106 && (ELF32_R_TYPE (rel[-1].r_info) == R_PPC_TLSGD
4107 || ELF32_R_TYPE (rel[-1].r_info) == R_PPC_TLSLD))
4108 /* We have a new-style __tls_get_addr call with a marker
4109 reloc. */
4110 ;
4111 else
4112 /* Mark this section as having an old-style call. */
4113 sec->has_tls_get_addr_call = 1;
4114 }
4115
4116 switch (r_type)
4117 {
4118 case R_PPC_TLSGD:
4119 case R_PPC_TLSLD:
4120 /* These special tls relocs tie a call to __tls_get_addr with
4121 its parameter symbol. */
4122 break;
4123
4124 case R_PPC_GOT_TLSLD16:
4125 case R_PPC_GOT_TLSLD16_LO:
4126 case R_PPC_GOT_TLSLD16_HI:
4127 case R_PPC_GOT_TLSLD16_HA:
4128 tls_type = TLS_TLS | TLS_LD;
4129 goto dogottls;
4130
4131 case R_PPC_GOT_TLSGD16:
4132 case R_PPC_GOT_TLSGD16_LO:
4133 case R_PPC_GOT_TLSGD16_HI:
4134 case R_PPC_GOT_TLSGD16_HA:
4135 tls_type = TLS_TLS | TLS_GD;
4136 goto dogottls;
4137
4138 case R_PPC_GOT_TPREL16:
4139 case R_PPC_GOT_TPREL16_LO:
4140 case R_PPC_GOT_TPREL16_HI:
4141 case R_PPC_GOT_TPREL16_HA:
4142 if (bfd_link_pic (info))
4143 info->flags |= DF_STATIC_TLS;
4144 tls_type = TLS_TLS | TLS_TPREL;
4145 goto dogottls;
4146
4147 case R_PPC_GOT_DTPREL16:
4148 case R_PPC_GOT_DTPREL16_LO:
4149 case R_PPC_GOT_DTPREL16_HI:
4150 case R_PPC_GOT_DTPREL16_HA:
4151 tls_type = TLS_TLS | TLS_DTPREL;
4152 dogottls:
4153 sec->has_tls_reloc = 1;
4154 /* Fall through. */
4155
4156 /* GOT16 relocations */
4157 case R_PPC_GOT16:
4158 case R_PPC_GOT16_LO:
4159 case R_PPC_GOT16_HI:
4160 case R_PPC_GOT16_HA:
4161 /* This symbol requires a global offset table entry. */
4162 if (htab->elf.sgot == NULL)
4163 {
4164 if (htab->elf.dynobj == NULL)
4165 htab->elf.dynobj = abfd;
4166 if (!ppc_elf_create_got (htab->elf.dynobj, info))
4167 return FALSE;
4168 }
4169 if (h != NULL)
4170 {
4171 h->got.refcount += 1;
4172 ppc_elf_hash_entry (h)->tls_mask |= tls_type;
4173 }
4174 else
4175 /* This is a global offset table entry for a local symbol. */
4176 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, tls_type))
4177 return FALSE;
4178
4179 /* We may also need a plt entry if the symbol turns out to be
4180 an ifunc. */
4181 if (h != NULL && !bfd_link_pic (info))
4182 {
4183 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
4184 return FALSE;
4185 }
4186 break;
4187
4188 /* Indirect .sdata relocation. */
4189 case R_PPC_EMB_SDAI16:
4190 if (bfd_link_pic (info))
4191 {
4192 bad_shared_reloc (abfd, r_type);
4193 return FALSE;
4194 }
4195 htab->sdata[0].sym->ref_regular = 1;
4196 if (!elf_allocate_pointer_linker_section (abfd, &htab->sdata[0],
4197 h, rel))
4198 return FALSE;
4199 if (h != NULL)
4200 {
4201 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4202 h->non_got_ref = TRUE;
4203 }
4204 break;
4205
4206 /* Indirect .sdata2 relocation. */
4207 case R_PPC_EMB_SDA2I16:
4208 if (bfd_link_pic (info))
4209 {
4210 bad_shared_reloc (abfd, r_type);
4211 return FALSE;
4212 }
4213 htab->sdata[1].sym->ref_regular = 1;
4214 if (!elf_allocate_pointer_linker_section (abfd, &htab->sdata[1],
4215 h, rel))
4216 return FALSE;
4217 if (h != NULL)
4218 {
4219 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4220 h->non_got_ref = TRUE;
4221 }
4222 break;
4223
4224 case R_PPC_SDAREL16:
4225 htab->sdata[0].sym->ref_regular = 1;
4226 /* Fall through. */
4227
4228 case R_PPC_VLE_SDAREL_LO16A:
4229 case R_PPC_VLE_SDAREL_LO16D:
4230 case R_PPC_VLE_SDAREL_HI16A:
4231 case R_PPC_VLE_SDAREL_HI16D:
4232 case R_PPC_VLE_SDAREL_HA16A:
4233 case R_PPC_VLE_SDAREL_HA16D:
4234 if (h != NULL)
4235 {
4236 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4237 h->non_got_ref = TRUE;
4238 }
4239 break;
4240
4241 case R_PPC_VLE_REL8:
4242 case R_PPC_VLE_REL15:
4243 case R_PPC_VLE_REL24:
4244 case R_PPC_VLE_LO16A:
4245 case R_PPC_VLE_LO16D:
4246 case R_PPC_VLE_HI16A:
4247 case R_PPC_VLE_HI16D:
4248 case R_PPC_VLE_HA16A:
4249 case R_PPC_VLE_HA16D:
4250 break;
4251
4252 case R_PPC_EMB_SDA2REL:
4253 if (bfd_link_pic (info))
4254 {
4255 bad_shared_reloc (abfd, r_type);
4256 return FALSE;
4257 }
4258 htab->sdata[1].sym->ref_regular = 1;
4259 if (h != NULL)
4260 {
4261 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4262 h->non_got_ref = TRUE;
4263 }
4264 break;
4265
4266 case R_PPC_VLE_SDA21_LO:
4267 case R_PPC_VLE_SDA21:
4268 case R_PPC_EMB_SDA21:
4269 case R_PPC_EMB_RELSDA:
4270 if (bfd_link_pic (info))
4271 {
4272 bad_shared_reloc (abfd, r_type);
4273 return FALSE;
4274 }
4275 if (h != NULL)
4276 {
4277 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4278 h->non_got_ref = TRUE;
4279 }
4280 break;
4281
4282 case R_PPC_EMB_NADDR32:
4283 case R_PPC_EMB_NADDR16:
4284 case R_PPC_EMB_NADDR16_LO:
4285 case R_PPC_EMB_NADDR16_HI:
4286 case R_PPC_EMB_NADDR16_HA:
4287 if (bfd_link_pic (info))
4288 {
4289 bad_shared_reloc (abfd, r_type);
4290 return FALSE;
4291 }
4292 if (h != NULL)
4293 h->non_got_ref = TRUE;
4294 break;
4295
4296 case R_PPC_PLTREL24:
4297 if (h == NULL)
4298 break;
4299 /* Fall through */
4300 case R_PPC_PLT32:
4301 case R_PPC_PLTREL32:
4302 case R_PPC_PLT16_LO:
4303 case R_PPC_PLT16_HI:
4304 case R_PPC_PLT16_HA:
4305#ifdef DEBUG
4306 fprintf (stderr, "Reloc requires a PLT entry\n");
4307#endif
4308 /* This symbol requires a procedure linkage table entry. */
4309 if (h == NULL)
4310 {
4311 if (ifunc == NULL)
4312 {
4313 /* It does not make sense to have a procedure linkage
4314 table entry for a non-ifunc local symbol. */
4315 info->callbacks->einfo
4316 /* xgettext:c-format */
4317 (_("%H: %s reloc against local symbol\n"),
4318 abfd, sec, rel->r_offset,
4319 ppc_elf_howto_table[r_type]->name);
4320 bfd_set_error (bfd_error_bad_value);
4321 return FALSE;
4322 }
4323 }
4324 else
4325 {
4326 bfd_vma addend = 0;
4327
4328 if (r_type == R_PPC_PLTREL24)
4329 {
4330 ppc_elf_tdata (abfd)->makes_plt_call = 1;
4331 if (bfd_link_pic (info))
4332 addend = rel->r_addend;
4333 }
4334 h->needs_plt = 1;
4335 if (!update_plt_info (abfd, &h->plt.plist, got2, addend))
4336 return FALSE;
4337 }
4338 break;
4339
4340 /* The following relocations don't need to propagate the
4341 relocation if linking a shared object since they are
4342 section relative. */
4343 case R_PPC_SECTOFF:
4344 case R_PPC_SECTOFF_LO:
4345 case R_PPC_SECTOFF_HI:
4346 case R_PPC_SECTOFF_HA:
4347 case R_PPC_DTPREL16:
4348 case R_PPC_DTPREL16_LO:
4349 case R_PPC_DTPREL16_HI:
4350 case R_PPC_DTPREL16_HA:
4351 case R_PPC_TOC16:
4352 break;
4353
4354 case R_PPC_REL16:
4355 case R_PPC_REL16_LO:
4356 case R_PPC_REL16_HI:
4357 case R_PPC_REL16_HA:
4358 case R_PPC_REL16DX_HA:
4359 ppc_elf_tdata (abfd)->has_rel16 = 1;
4360 break;
4361
4362 /* These are just markers. */
4363 case R_PPC_TLS:
4364 case R_PPC_EMB_MRKREF:
4365 case R_PPC_NONE:
4366 case R_PPC_max:
4367 case R_PPC_RELAX:
4368 case R_PPC_RELAX_PLT:
4369 case R_PPC_RELAX_PLTREL24:
4370 case R_PPC_16DX_HA:
4371 break;
4372
4373 /* These should only appear in dynamic objects. */
4374 case R_PPC_COPY:
4375 case R_PPC_GLOB_DAT:
4376 case R_PPC_JMP_SLOT:
4377 case R_PPC_RELATIVE:
4378 case R_PPC_IRELATIVE:
4379 break;
4380
4381 /* These aren't handled yet. We'll report an error later. */
4382 case R_PPC_ADDR30:
4383 case R_PPC_EMB_RELSEC16:
4384 case R_PPC_EMB_RELST_LO:
4385 case R_PPC_EMB_RELST_HI:
4386 case R_PPC_EMB_RELST_HA:
4387 case R_PPC_EMB_BIT_FLD:
4388 break;
4389
4390 /* This refers only to functions defined in the shared library. */
4391 case R_PPC_LOCAL24PC:
4392 if (h != NULL && h == htab->elf.hgot && htab->plt_type == PLT_UNSET)
4393 {
4394 htab->plt_type = PLT_OLD;
4395 htab->old_bfd = abfd;
4396 }
4397 if (h != NULL && h->type == STT_GNU_IFUNC)
4398 {
4399 h->needs_plt = 1;
4400 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
4401 return FALSE;
4402 }
4403 break;
4404
4405 /* This relocation describes the C++ object vtable hierarchy.
4406 Reconstruct it for later use during GC. */
4407 case R_PPC_GNU_VTINHERIT:
4408 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
4409 return FALSE;
4410 break;
4411
4412 /* This relocation describes which C++ vtable entries are actually
4413 used. Record for later use during GC. */
4414 case R_PPC_GNU_VTENTRY:
4415 BFD_ASSERT (h != NULL);
4416 if (h != NULL
4417 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
4418 return FALSE;
4419 break;
4420
4421 /* We shouldn't really be seeing these. */
4422 case R_PPC_TPREL32:
4423 case R_PPC_TPREL16:
4424 case R_PPC_TPREL16_LO:
4425 case R_PPC_TPREL16_HI:
4426 case R_PPC_TPREL16_HA:
4427 if (bfd_link_pic (info))
4428 info->flags |= DF_STATIC_TLS;
4429 goto dodyn;
4430
4431 /* Nor these. */
4432 case R_PPC_DTPMOD32:
4433 case R_PPC_DTPREL32:
4434 goto dodyn;
4435
4436 case R_PPC_REL32:
4437 if (h == NULL
4438 && got2 != NULL
4439 && (sec->flags & SEC_CODE) != 0
4440 && bfd_link_pic (info)
4441 && htab->plt_type == PLT_UNSET)
4442 {
4443 /* Old -fPIC gcc code has .long LCTOC1-LCFx just before
4444 the start of a function, which assembles to a REL32
4445 reference to .got2. If we detect one of these, then
4446 force the old PLT layout because the linker cannot
4447 reliably deduce the GOT pointer value needed for
4448 PLT call stubs. */
4449 asection *s;
4450 Elf_Internal_Sym *isym;
4451
4452 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
4453 abfd, r_symndx);
4454 if (isym == NULL)
4455 return FALSE;
4456
4457 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
4458 if (s == got2)
4459 {
4460 htab->plt_type = PLT_OLD;
4461 htab->old_bfd = abfd;
4462 }
4463 }
4464 if (h == NULL || h == htab->elf.hgot)
4465 break;
4466 /* fall through */
4467
4468 case R_PPC_ADDR32:
4469 case R_PPC_ADDR16:
4470 case R_PPC_ADDR16_LO:
4471 case R_PPC_ADDR16_HI:
4472 case R_PPC_ADDR16_HA:
4473 case R_PPC_UADDR32:
4474 case R_PPC_UADDR16:
4475 if (h != NULL && !bfd_link_pic (info))
4476 {
4477 /* We may need a plt entry if the symbol turns out to be
4478 a function defined in a dynamic object. */
4479 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
4480 return FALSE;
4481
4482 /* We may need a copy reloc too. */
4483 h->non_got_ref = 1;
4484 h->pointer_equality_needed = 1;
4485 if (r_type == R_PPC_ADDR16_HA)
4486 ppc_elf_hash_entry (h)->has_addr16_ha = 1;
4487 if (r_type == R_PPC_ADDR16_LO)
4488 ppc_elf_hash_entry (h)->has_addr16_lo = 1;
4489 }
4490 goto dodyn;
4491
4492 case R_PPC_REL24:
4493 case R_PPC_REL14:
4494 case R_PPC_REL14_BRTAKEN:
4495 case R_PPC_REL14_BRNTAKEN:
4496 if (h == NULL)
4497 break;
4498 if (h == htab->elf.hgot)
4499 {
4500 if (htab->plt_type == PLT_UNSET)
4501 {
4502 htab->plt_type = PLT_OLD;
4503 htab->old_bfd = abfd;
4504 }
4505 break;
4506 }
4507 /* fall through */
4508
4509 case R_PPC_ADDR24:
4510 case R_PPC_ADDR14:
4511 case R_PPC_ADDR14_BRTAKEN:
4512 case R_PPC_ADDR14_BRNTAKEN:
4513 if (h != NULL && !bfd_link_pic (info))
4514 {
4515 /* We may need a plt entry if the symbol turns out to be
4516 a function defined in a dynamic object. */
4517 h->needs_plt = 1;
4518 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
4519 return FALSE;
4520 break;
4521 }
4522
4523 dodyn:
4524 /* If we are creating a shared library, and this is a reloc
4525 against a global symbol, or a non PC relative reloc
4526 against a local symbol, then we need to copy the reloc
4527 into the shared library. However, if we are linking with
4528 -Bsymbolic, we do not need to copy a reloc against a
4529 global symbol which is defined in an object we are
4530 including in the link (i.e., DEF_REGULAR is set). At
4531 this point we have not seen all the input files, so it is
4532 possible that DEF_REGULAR is not set now but will be set
4533 later (it is never cleared). In case of a weak definition,
4534 DEF_REGULAR may be cleared later by a strong definition in
4535 a shared library. We account for that possibility below by
4536 storing information in the dyn_relocs field of the hash
4537 table entry. A similar situation occurs when creating
4538 shared libraries and symbol visibility changes render the
4539 symbol local.
4540
4541 If on the other hand, we are creating an executable, we
4542 may need to keep relocations for symbols satisfied by a
4543 dynamic library if we manage to avoid copy relocs for the
4544 symbol. */
4545 if ((bfd_link_pic (info)
4546 && (must_be_dyn_reloc (info, r_type)
4547 || (h != NULL
4548 && (!SYMBOLIC_BIND (info, h)
4549 || h->root.type == bfd_link_hash_defweak
4550 || !h->def_regular))))
4551 || (ELIMINATE_COPY_RELOCS
4552 && !bfd_link_pic (info)
4553 && h != NULL
4554 && (h->root.type == bfd_link_hash_defweak
4555 || !h->def_regular)))
4556 {
4557#ifdef DEBUG
4558 fprintf (stderr,
4559 "ppc_elf_check_relocs needs to "
4560 "create relocation for %s\n",
4561 (h && h->root.root.string
4562 ? h->root.root.string : "<unknown>"));
4563#endif
4564 if (sreloc == NULL)
4565 {
4566 if (htab->elf.dynobj == NULL)
4567 htab->elf.dynobj = abfd;
4568
4569 sreloc = _bfd_elf_make_dynamic_reloc_section
4570 (sec, htab->elf.dynobj, 2, abfd, /*rela?*/ TRUE);
4571
4572 if (sreloc == NULL)
4573 return FALSE;
4574 }
4575
4576 /* If this is a global symbol, we count the number of
4577 relocations we need for this symbol. */
4578 if (h != NULL)
4579 {
4580 struct elf_dyn_relocs *p;
4581 struct elf_dyn_relocs **rel_head;
4582
4583 rel_head = &ppc_elf_hash_entry (h)->dyn_relocs;
4584 p = *rel_head;
4585 if (p == NULL || p->sec != sec)
4586 {
4587 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
4588 if (p == NULL)
4589 return FALSE;
4590 p->next = *rel_head;
4591 *rel_head = p;
4592 p->sec = sec;
4593 p->count = 0;
4594 p->pc_count = 0;
4595 }
4596 p->count += 1;
4597 if (!must_be_dyn_reloc (info, r_type))
4598 p->pc_count += 1;
4599 }
4600 else
4601 {
4602 /* Track dynamic relocs needed for local syms too.
4603 We really need local syms available to do this
4604 easily. Oh well. */
4605 struct ppc_dyn_relocs *p;
4606 struct ppc_dyn_relocs **rel_head;
4607 bfd_boolean is_ifunc;
4608 asection *s;
4609 void *vpp;
4610 Elf_Internal_Sym *isym;
4611
4612 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
4613 abfd, r_symndx);
4614 if (isym == NULL)
4615 return FALSE;
4616
4617 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
4618 if (s == NULL)
4619 s = sec;
4620
4621 vpp = &elf_section_data (s)->local_dynrel;
4622 rel_head = (struct ppc_dyn_relocs **) vpp;
4623 is_ifunc = ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC;
4624 p = *rel_head;
4625 if (p != NULL && p->sec == sec && p->ifunc != is_ifunc)
4626 p = p->next;
4627 if (p == NULL || p->sec != sec || p->ifunc != is_ifunc)
4628 {
4629 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
4630 if (p == NULL)
4631 return FALSE;
4632 p->next = *rel_head;
4633 *rel_head = p;
4634 p->sec = sec;
4635 p->ifunc = is_ifunc;
4636 p->count = 0;
4637 }
4638 p->count += 1;
4639 }
4640 }
4641
4642 break;
4643 }
4644 }
4645
4646 return TRUE;
4647}
4648\f
4649/* Warn for conflicting Tag_GNU_Power_ABI_FP attributes between IBFD
4650 and OBFD, and merge non-conflicting ones. */
4651void
4652_bfd_elf_ppc_merge_fp_attributes (bfd *ibfd, struct bfd_link_info *info)
4653{
4654 bfd *obfd = info->output_bfd;
4655 obj_attribute *in_attr, *in_attrs;
4656 obj_attribute *out_attr, *out_attrs;
4657
4658 in_attrs = elf_known_obj_attributes (ibfd)[OBJ_ATTR_GNU];
4659 out_attrs = elf_known_obj_attributes (obfd)[OBJ_ATTR_GNU];
4660
4661 in_attr = &in_attrs[Tag_GNU_Power_ABI_FP];
4662 out_attr = &out_attrs[Tag_GNU_Power_ABI_FP];
4663
4664 if (in_attr->i != out_attr->i)
4665 {
4666 int in_fp = in_attr->i & 3;
4667 int out_fp = out_attr->i & 3;
4668
4669 if (in_fp == 0)
4670 ;
4671 else if (out_fp == 0)
4672 {
4673 out_attr->type = 1;
4674 out_attr->i ^= in_fp;
4675 }
4676 else if (out_fp != 2 && in_fp == 2)
4677 _bfd_error_handler
4678 /* xgettext:c-format */
4679 (_("Warning: %B uses hard float, %B uses soft float"), obfd, ibfd);
4680 else if (out_fp == 2 && in_fp != 2)
4681 _bfd_error_handler
4682 /* xgettext:c-format */
4683 (_("Warning: %B uses hard float, %B uses soft float"), ibfd, obfd);
4684 else if (out_fp == 1 && in_fp == 3)
4685 _bfd_error_handler
4686 /* xgettext:c-format */
4687 (_("Warning: %B uses double-precision hard float, "
4688 "%B uses single-precision hard float"), obfd, ibfd);
4689 else if (out_fp == 3 && in_fp == 1)
4690 _bfd_error_handler
4691 /* xgettext:c-format */
4692 (_("Warning: %B uses double-precision hard float, "
4693 "%B uses single-precision hard float"), ibfd, obfd);
4694
4695 in_fp = in_attr->i & 0xc;
4696 out_fp = out_attr->i & 0xc;
4697 if (in_fp == 0)
4698 ;
4699 else if (out_fp == 0)
4700 {
4701 out_attr->type = 1;
4702 out_attr->i ^= in_fp;
4703 }
4704 else if (out_fp != 2 * 4 && in_fp == 2 * 4)
4705 _bfd_error_handler
4706 /* xgettext:c-format */
4707 (_("Warning: %B uses 64-bit long double, "
4708 "%B uses 128-bit long double"), ibfd, obfd);
4709 else if (in_fp != 2 * 4 && out_fp == 2 * 4)
4710 _bfd_error_handler
4711 /* xgettext:c-format */
4712 (_("Warning: %B uses 64-bit long double, "
4713 "%B uses 128-bit long double"), obfd, ibfd);
4714 else if (out_fp == 1 * 4 && in_fp == 3 * 4)
4715 _bfd_error_handler
4716 /* xgettext:c-format */
4717 (_("Warning: %B uses IBM long double, "
4718 "%B uses IEEE long double"), ibfd, obfd);
4719 else if (out_fp == 3 * 4 && in_fp == 1 * 4)
4720 _bfd_error_handler
4721 /* xgettext:c-format */
4722 (_("Warning: %B uses IBM long double, "
4723 "%B uses IEEE long double"), obfd, ibfd);
4724 }
4725}
4726
4727/* Merge object attributes from IBFD into OBFD. Warn if
4728 there are conflicting attributes. */
4729static bfd_boolean
4730ppc_elf_merge_obj_attributes (bfd *ibfd, struct bfd_link_info *info)
4731{
4732 bfd *obfd;
4733 obj_attribute *in_attr, *in_attrs;
4734 obj_attribute *out_attr, *out_attrs;
4735
4736 _bfd_elf_ppc_merge_fp_attributes (ibfd, info);
4737
4738 obfd = info->output_bfd;
4739 in_attrs = elf_known_obj_attributes (ibfd)[OBJ_ATTR_GNU];
4740 out_attrs = elf_known_obj_attributes (obfd)[OBJ_ATTR_GNU];
4741
4742 /* Check for conflicting Tag_GNU_Power_ABI_Vector attributes and
4743 merge non-conflicting ones. */
4744 in_attr = &in_attrs[Tag_GNU_Power_ABI_Vector];
4745 out_attr = &out_attrs[Tag_GNU_Power_ABI_Vector];
4746 if (in_attr->i != out_attr->i)
4747 {
4748 int in_vec = in_attr->i & 3;
4749 int out_vec = out_attr->i & 3;
4750
4751 if (in_vec == 0)
4752 ;
4753 else if (out_vec == 0)
4754 {
4755 out_attr->type = 1;
4756 out_attr->i = in_vec;
4757 }
4758 /* For now, allow generic to transition to AltiVec or SPE
4759 without a warning. If GCC marked files with their stack
4760 alignment and used don't-care markings for files which are
4761 not affected by the vector ABI, we could warn about this
4762 case too. */
4763 else if (in_vec == 1)
4764 ;
4765 else if (out_vec == 1)
4766 {
4767 out_attr->type = 1;
4768 out_attr->i = in_vec;
4769 }
4770 else if (out_vec < in_vec)
4771 _bfd_error_handler
4772 /* xgettext:c-format */
4773 (_("Warning: %B uses AltiVec vector ABI, %B uses SPE vector ABI"),
4774 obfd, ibfd);
4775 else if (out_vec > in_vec)
4776 _bfd_error_handler
4777 /* xgettext:c-format */
4778 (_("Warning: %B uses AltiVec vector ABI, %B uses SPE vector ABI"),
4779 ibfd, obfd);
4780 }
4781
4782 /* Check for conflicting Tag_GNU_Power_ABI_Struct_Return attributes
4783 and merge non-conflicting ones. */
4784 in_attr = &in_attrs[Tag_GNU_Power_ABI_Struct_Return];
4785 out_attr = &out_attrs[Tag_GNU_Power_ABI_Struct_Return];
4786 if (in_attr->i != out_attr->i)
4787 {
4788 int in_struct = in_attr->i & 3;
4789 int out_struct = out_attr->i & 3;
4790
4791 if (in_struct == 0 || in_struct == 3)
4792 ;
4793 else if (out_struct == 0)
4794 {
4795 out_attr->type = 1;
4796 out_attr->i = in_struct;
4797 }
4798 else if (out_struct < in_struct)
4799 _bfd_error_handler
4800 /* xgettext:c-format */
4801 (_("Warning: %B uses r3/r4 for small structure returns, "
4802 "%B uses memory"), obfd, ibfd);
4803 else if (out_struct > in_struct)
4804 _bfd_error_handler
4805 /* xgettext:c-format */
4806 (_("Warning: %B uses r3/r4 for small structure returns, "
4807 "%B uses memory"), ibfd, obfd);
4808 }
4809
4810 /* Merge Tag_compatibility attributes and any common GNU ones. */
4811 _bfd_elf_merge_object_attributes (ibfd, info);
4812
4813 return TRUE;
4814}
4815
4816/* Merge backend specific data from an object file to the output
4817 object file when linking. */
4818
4819static bfd_boolean
4820ppc_elf_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info)
4821{
4822 bfd *obfd = info->output_bfd;
4823 flagword old_flags;
4824 flagword new_flags;
4825 bfd_boolean error;
4826
4827 if (!is_ppc_elf (ibfd) || !is_ppc_elf (obfd))
4828 return TRUE;
4829
4830 /* Check if we have the same endianness. */
4831 if (! _bfd_generic_verify_endian_match (ibfd, info))
4832 return FALSE;
4833
4834 if (!ppc_elf_merge_obj_attributes (ibfd, info))
4835 return FALSE;
4836
4837 new_flags = elf_elfheader (ibfd)->e_flags;
4838 old_flags = elf_elfheader (obfd)->e_flags;
4839 if (!elf_flags_init (obfd))
4840 {
4841 /* First call, no flags set. */
4842 elf_flags_init (obfd) = TRUE;
4843 elf_elfheader (obfd)->e_flags = new_flags;
4844 }
4845
4846 /* Compatible flags are ok. */
4847 else if (new_flags == old_flags)
4848 ;
4849
4850 /* Incompatible flags. */
4851 else
4852 {
4853 /* Warn about -mrelocatable mismatch. Allow -mrelocatable-lib
4854 to be linked with either. */
4855 error = FALSE;
4856 if ((new_flags & EF_PPC_RELOCATABLE) != 0
4857 && (old_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0)
4858 {
4859 error = TRUE;
4860 _bfd_error_handler
4861 (_("%B: compiled with -mrelocatable and linked with "
4862 "modules compiled normally"), ibfd);
4863 }
4864 else if ((new_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0
4865 && (old_flags & EF_PPC_RELOCATABLE) != 0)
4866 {
4867 error = TRUE;
4868 _bfd_error_handler
4869 (_("%B: compiled normally and linked with "
4870 "modules compiled with -mrelocatable"), ibfd);
4871 }
4872
4873 /* The output is -mrelocatable-lib iff both the input files are. */
4874 if (! (new_flags & EF_PPC_RELOCATABLE_LIB))
4875 elf_elfheader (obfd)->e_flags &= ~EF_PPC_RELOCATABLE_LIB;
4876
4877 /* The output is -mrelocatable iff it can't be -mrelocatable-lib,
4878 but each input file is either -mrelocatable or -mrelocatable-lib. */
4879 if (! (elf_elfheader (obfd)->e_flags & EF_PPC_RELOCATABLE_LIB)
4880 && (new_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE))
4881 && (old_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE)))
4882 elf_elfheader (obfd)->e_flags |= EF_PPC_RELOCATABLE;
4883
4884 /* Do not warn about eabi vs. V.4 mismatch, just or in the bit if
4885 any module uses it. */
4886 elf_elfheader (obfd)->e_flags |= (new_flags & EF_PPC_EMB);
4887
4888 new_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
4889 old_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
4890
4891 /* Warn about any other mismatches. */
4892 if (new_flags != old_flags)
4893 {
4894 error = TRUE;
4895 _bfd_error_handler
4896 /* xgettext:c-format */
4897 (_("%B: uses different e_flags (0x%lx) fields "
4898 "than previous modules (0x%lx)"),
4899 ibfd, (long) new_flags, (long) old_flags);
4900 }
4901
4902 if (error)
4903 {
4904 bfd_set_error (bfd_error_bad_value);
4905 return FALSE;
4906 }
4907 }
4908
4909 return TRUE;
4910}
4911
4912static void
4913ppc_elf_vle_split16 (bfd *input_bfd,
4914 asection *input_section,
4915 unsigned long offset,
4916 bfd_byte *loc,
4917 bfd_vma value,
4918 split16_format_type split16_format,
4919 bfd_boolean fixup)
4920{
4921 unsigned int insn, opcode, top5;
4922
4923 insn = bfd_get_32 (input_bfd, loc);
4924 opcode = insn & 0xfc00f800;
4925 if (opcode == E_OR2I_INSN
4926 || opcode == E_AND2I_DOT_INSN
4927 || opcode == E_OR2IS_INSN
4928 || opcode == E_LIS_INSN
4929 || opcode == E_AND2IS_DOT_INSN)
4930 {
4931 if (split16_format != split16a_type)
4932 {
4933 if (fixup)
4934 split16_format = split16a_type;
4935 else
4936 _bfd_error_handler
4937 /* xgettext:c-format */
4938 (_("%B(%A+0x%lx): expected 16A style relocation on 0x%08x insn"),
4939 input_bfd, input_section, offset, opcode);
4940 }
4941 }
4942 else if (opcode == E_ADD2I_DOT_INSN
4943 || opcode == E_ADD2IS_INSN
4944 || opcode == E_CMP16I_INSN
4945 || opcode == E_MULL2I_INSN
4946 || opcode == E_CMPL16I_INSN
4947 || opcode == E_CMPH16I_INSN
4948 || opcode == E_CMPHL16I_INSN)
4949 {
4950 if (split16_format != split16d_type)
4951 {
4952 if (fixup)
4953 split16_format = split16d_type;
4954 else
4955 _bfd_error_handler
4956 /* xgettext:c-format */
4957 (_("%B(%A+0x%lx): expected 16D style relocation on 0x%08x insn"),
4958 input_bfd, input_section, offset, opcode);
4959 }
4960 }
4961 top5 = value & 0xf800;
4962 top5 = top5 << (split16_format == split16a_type ? 5 : 10);
4963 insn &= (split16_format == split16a_type ? ~0x1f07ff : ~0x3e007ff);
4964 insn |= top5;
4965 insn |= value & 0x7ff;
4966 bfd_put_32 (input_bfd, insn, loc);
4967}
4968\f
4969/* Choose which PLT scheme to use, and set .plt flags appropriately.
4970 Returns -1 on error, 0 for old PLT, 1 for new PLT. */
4971int
4972ppc_elf_select_plt_layout (bfd *output_bfd ATTRIBUTE_UNUSED,
4973 struct bfd_link_info *info)
4974{
4975 struct ppc_elf_link_hash_table *htab;
4976 flagword flags;
4977
4978 htab = ppc_elf_hash_table (info);
4979
4980 if (htab->plt_type == PLT_UNSET)
4981 {
4982 struct elf_link_hash_entry *h;
4983
4984 if (htab->params->plt_style == PLT_OLD)
4985 htab->plt_type = PLT_OLD;
4986 else if (bfd_link_pic (info)
4987 && htab->elf.dynamic_sections_created
4988 && (h = elf_link_hash_lookup (&htab->elf, "_mcount",
4989 FALSE, FALSE, TRUE)) != NULL
4990 && (h->type == STT_FUNC
4991 || h->needs_plt)
4992 && h->ref_regular
4993 && !(SYMBOL_CALLS_LOCAL (info, h)
4994 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
4995 && h->root.type == bfd_link_hash_undefweak)))
4996 {
4997 /* Profiling of shared libs (and pies) is not supported with
4998 secure plt, because ppc32 does profiling before a
4999 function prologue and a secure plt pic call stubs needs
5000 r30 to be set up. */
5001 htab->plt_type = PLT_OLD;
5002 }
5003 else
5004 {
5005 bfd *ibfd;
5006 enum ppc_elf_plt_type plt_type = htab->params->plt_style;
5007
5008 /* Look through the reloc flags left by ppc_elf_check_relocs.
5009 Use the old style bss plt if a file makes plt calls
5010 without using the new relocs, and if ld isn't given
5011 --secure-plt and we never see REL16 relocs. */
5012 if (plt_type == PLT_UNSET)
5013 plt_type = PLT_OLD;
5014 for (ibfd = info->input_bfds; ibfd; ibfd = ibfd->link.next)
5015 if (is_ppc_elf (ibfd))
5016 {
5017 if (ppc_elf_tdata (ibfd)->has_rel16)
5018 plt_type = PLT_NEW;
5019 else if (ppc_elf_tdata (ibfd)->makes_plt_call)
5020 {
5021 plt_type = PLT_OLD;
5022 htab->old_bfd = ibfd;
5023 break;
5024 }
5025 }
5026 htab->plt_type = plt_type;
5027 }
5028 }
5029 if (htab->plt_type == PLT_OLD && htab->params->plt_style == PLT_NEW)
5030 {
5031 if (htab->old_bfd != NULL)
5032 info->callbacks->einfo (_("%P: bss-plt forced due to %B\n"),
5033 htab->old_bfd);
5034 else
5035 info->callbacks->einfo (_("%P: bss-plt forced by profiling\n"));
5036 }
5037
5038 BFD_ASSERT (htab->plt_type != PLT_VXWORKS);
5039
5040 if (htab->plt_type == PLT_NEW)
5041 {
5042 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
5043 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
5044
5045 /* The new PLT is a loaded section. */
5046 if (htab->elf.splt != NULL
5047 && !bfd_set_section_flags (htab->elf.dynobj, htab->elf.splt, flags))
5048 return -1;
5049
5050 /* The new GOT is not executable. */
5051 if (htab->elf.sgot != NULL
5052 && !bfd_set_section_flags (htab->elf.dynobj, htab->elf.sgot, flags))
5053 return -1;
5054 }
5055 else
5056 {
5057 /* Stop an unused .glink section from affecting .text alignment. */
5058 if (htab->glink != NULL
5059 && !bfd_set_section_alignment (htab->elf.dynobj, htab->glink, 0))
5060 return -1;
5061 }
5062 return htab->plt_type == PLT_NEW;
5063}
5064\f
5065/* Return the section that should be marked against GC for a given
5066 relocation. */
5067
5068static asection *
5069ppc_elf_gc_mark_hook (asection *sec,
5070 struct bfd_link_info *info,
5071 Elf_Internal_Rela *rel,
5072 struct elf_link_hash_entry *h,
5073 Elf_Internal_Sym *sym)
5074{
5075 if (h != NULL)
5076 switch (ELF32_R_TYPE (rel->r_info))
5077 {
5078 case R_PPC_GNU_VTINHERIT:
5079 case R_PPC_GNU_VTENTRY:
5080 return NULL;
5081 }
5082
5083 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
5084}
5085
5086/* Update the got, plt and dynamic reloc reference counts for the
5087 section being removed. */
5088
5089static bfd_boolean
5090ppc_elf_gc_sweep_hook (bfd *abfd,
5091 struct bfd_link_info *info,
5092 asection *sec,
5093 const Elf_Internal_Rela *relocs)
5094{
5095 struct ppc_elf_link_hash_table *htab;
5096 Elf_Internal_Shdr *symtab_hdr;
5097 struct elf_link_hash_entry **sym_hashes;
5098 bfd_signed_vma *local_got_refcounts;
5099 const Elf_Internal_Rela *rel, *relend;
5100 asection *got2;
5101
5102 if (bfd_link_relocatable (info))
5103 return TRUE;
5104
5105 if ((sec->flags & SEC_ALLOC) == 0)
5106 return TRUE;
5107
5108 elf_section_data (sec)->local_dynrel = NULL;
5109
5110 htab = ppc_elf_hash_table (info);
5111 symtab_hdr = &elf_symtab_hdr (abfd);
5112 sym_hashes = elf_sym_hashes (abfd);
5113 local_got_refcounts = elf_local_got_refcounts (abfd);
5114 got2 = bfd_get_section_by_name (abfd, ".got2");
5115
5116 relend = relocs + sec->reloc_count;
5117 for (rel = relocs; rel < relend; rel++)
5118 {
5119 unsigned long r_symndx;
5120 enum elf_ppc_reloc_type r_type;
5121 struct elf_link_hash_entry *h = NULL;
5122
5123 r_symndx = ELF32_R_SYM (rel->r_info);
5124 if (r_symndx >= symtab_hdr->sh_info)
5125 {
5126 struct elf_dyn_relocs **pp, *p;
5127 struct ppc_elf_link_hash_entry *eh;
5128
5129 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5130 while (h->root.type == bfd_link_hash_indirect
5131 || h->root.type == bfd_link_hash_warning)
5132 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5133 eh = (struct ppc_elf_link_hash_entry *) h;
5134
5135 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
5136 if (p->sec == sec)
5137 {
5138 /* Everything must go for SEC. */
5139 *pp = p->next;
5140 break;
5141 }
5142 }
5143
5144 r_type = ELF32_R_TYPE (rel->r_info);
5145 if (!htab->is_vxworks
5146 && h == NULL
5147 && local_got_refcounts != NULL
5148 && (!bfd_link_pic (info)
5149 || is_branch_reloc (r_type)))
5150 {
5151 struct plt_entry **local_plt = (struct plt_entry **)
5152 (local_got_refcounts + symtab_hdr->sh_info);
5153 char *local_got_tls_masks = (char *)
5154 (local_plt + symtab_hdr->sh_info);
5155 if ((local_got_tls_masks[r_symndx] & PLT_IFUNC) != 0)
5156 {
5157 struct plt_entry **ifunc = local_plt + r_symndx;
5158 bfd_vma addend = 0;
5159 struct plt_entry *ent;
5160
5161 if (r_type == R_PPC_PLTREL24 && bfd_link_pic (info))
5162 addend = rel->r_addend;
5163 ent = find_plt_ent (ifunc, got2, addend);
5164 if (ent->plt.refcount > 0)
5165 ent->plt.refcount -= 1;
5166 continue;
5167 }
5168 }
5169
5170 switch (r_type)
5171 {
5172 case R_PPC_GOT_TLSLD16:
5173 case R_PPC_GOT_TLSLD16_LO:
5174 case R_PPC_GOT_TLSLD16_HI:
5175 case R_PPC_GOT_TLSLD16_HA:
5176 case R_PPC_GOT_TLSGD16:
5177 case R_PPC_GOT_TLSGD16_LO:
5178 case R_PPC_GOT_TLSGD16_HI:
5179 case R_PPC_GOT_TLSGD16_HA:
5180 case R_PPC_GOT_TPREL16:
5181 case R_PPC_GOT_TPREL16_LO:
5182 case R_PPC_GOT_TPREL16_HI:
5183 case R_PPC_GOT_TPREL16_HA:
5184 case R_PPC_GOT_DTPREL16:
5185 case R_PPC_GOT_DTPREL16_LO:
5186 case R_PPC_GOT_DTPREL16_HI:
5187 case R_PPC_GOT_DTPREL16_HA:
5188 case R_PPC_GOT16:
5189 case R_PPC_GOT16_LO:
5190 case R_PPC_GOT16_HI:
5191 case R_PPC_GOT16_HA:
5192 if (h != NULL)
5193 {
5194 if (h->got.refcount > 0)
5195 h->got.refcount--;
5196 if (!bfd_link_pic (info))
5197 {
5198 struct plt_entry *ent;
5199
5200 ent = find_plt_ent (&h->plt.plist, NULL, 0);
5201 if (ent != NULL && ent->plt.refcount > 0)
5202 ent->plt.refcount -= 1;
5203 }
5204 }
5205 else if (local_got_refcounts != NULL)
5206 {
5207 if (local_got_refcounts[r_symndx] > 0)
5208 local_got_refcounts[r_symndx]--;
5209 }
5210 break;
5211
5212 case R_PPC_REL24:
5213 case R_PPC_REL14:
5214 case R_PPC_REL14_BRTAKEN:
5215 case R_PPC_REL14_BRNTAKEN:
5216 case R_PPC_REL32:
5217 if (h == NULL || h == htab->elf.hgot)
5218 break;
5219 /* Fall through. */
5220
5221 case R_PPC_ADDR32:
5222 case R_PPC_ADDR24:
5223 case R_PPC_ADDR16:
5224 case R_PPC_ADDR16_LO:
5225 case R_PPC_ADDR16_HI:
5226 case R_PPC_ADDR16_HA:
5227 case R_PPC_ADDR14:
5228 case R_PPC_ADDR14_BRTAKEN:
5229 case R_PPC_ADDR14_BRNTAKEN:
5230 case R_PPC_UADDR32:
5231 case R_PPC_UADDR16:
5232 if (bfd_link_pic (info))
5233 break;
5234 /* Fall through. */
5235
5236 case R_PPC_PLT32:
5237 case R_PPC_PLTREL24:
5238 case R_PPC_PLTREL32:
5239 case R_PPC_PLT16_LO:
5240 case R_PPC_PLT16_HI:
5241 case R_PPC_PLT16_HA:
5242 if (h != NULL)
5243 {
5244 bfd_vma addend = 0;
5245 struct plt_entry *ent;
5246
5247 if (r_type == R_PPC_PLTREL24 && bfd_link_pic (info))
5248 addend = rel->r_addend;
5249 ent = find_plt_ent (&h->plt.plist, got2, addend);
5250 if (ent != NULL && ent->plt.refcount > 0)
5251 ent->plt.refcount -= 1;
5252 }
5253 break;
5254
5255 default:
5256 break;
5257 }
5258 }
5259 return TRUE;
5260}
5261\f
5262/* Set plt output section type, htab->tls_get_addr, and call the
5263 generic ELF tls_setup function. */
5264
5265asection *
5266ppc_elf_tls_setup (bfd *obfd, struct bfd_link_info *info)
5267{
5268 struct ppc_elf_link_hash_table *htab;
5269
5270 htab = ppc_elf_hash_table (info);
5271 htab->tls_get_addr = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
5272 FALSE, FALSE, TRUE);
5273 if (htab->plt_type != PLT_NEW)
5274 htab->params->no_tls_get_addr_opt = TRUE;
5275
5276 if (!htab->params->no_tls_get_addr_opt)
5277 {
5278 struct elf_link_hash_entry *opt, *tga;
5279 opt = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_opt",
5280 FALSE, FALSE, TRUE);
5281 if (opt != NULL
5282 && (opt->root.type == bfd_link_hash_defined
5283 || opt->root.type == bfd_link_hash_defweak))
5284 {
5285 /* If glibc supports an optimized __tls_get_addr call stub,
5286 signalled by the presence of __tls_get_addr_opt, and we'll
5287 be calling __tls_get_addr via a plt call stub, then
5288 make __tls_get_addr point to __tls_get_addr_opt. */
5289 tga = htab->tls_get_addr;
5290 if (htab->elf.dynamic_sections_created
5291 && tga != NULL
5292 && (tga->type == STT_FUNC
5293 || tga->needs_plt)
5294 && !(SYMBOL_CALLS_LOCAL (info, tga)
5295 || (ELF_ST_VISIBILITY (tga->other) != STV_DEFAULT
5296 && tga->root.type == bfd_link_hash_undefweak)))
5297 {
5298 struct plt_entry *ent;
5299 for (ent = tga->plt.plist; ent != NULL; ent = ent->next)
5300 if (ent->plt.refcount > 0)
5301 break;
5302 if (ent != NULL)
5303 {
5304 tga->root.type = bfd_link_hash_indirect;
5305 tga->root.u.i.link = &opt->root;
5306 ppc_elf_copy_indirect_symbol (info, opt, tga);
5307 opt->mark = 1;
5308 if (opt->dynindx != -1)
5309 {
5310 /* Use __tls_get_addr_opt in dynamic relocations. */
5311 opt->dynindx = -1;
5312 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
5313 opt->dynstr_index);
5314 if (!bfd_elf_link_record_dynamic_symbol (info, opt))
5315 return FALSE;
5316 }
5317 htab->tls_get_addr = opt;
5318 }
5319 }
5320 }
5321 else
5322 htab->params->no_tls_get_addr_opt = TRUE;
5323 }
5324 if (htab->plt_type == PLT_NEW
5325 && htab->elf.splt != NULL
5326 && htab->elf.splt->output_section != NULL)
5327 {
5328 elf_section_type (htab->elf.splt->output_section) = SHT_PROGBITS;
5329 elf_section_flags (htab->elf.splt->output_section) = SHF_ALLOC + SHF_WRITE;
5330 }
5331
5332 return _bfd_elf_tls_setup (obfd, info);
5333}
5334
5335/* Return TRUE iff REL is a branch reloc with a global symbol matching
5336 HASH. */
5337
5338static bfd_boolean
5339branch_reloc_hash_match (const bfd *ibfd,
5340 const Elf_Internal_Rela *rel,
5341 const struct elf_link_hash_entry *hash)
5342{
5343 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
5344 enum elf_ppc_reloc_type r_type = ELF32_R_TYPE (rel->r_info);
5345 unsigned int r_symndx = ELF32_R_SYM (rel->r_info);
5346
5347 if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type))
5348 {
5349 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
5350 struct elf_link_hash_entry *h;
5351
5352 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5353 while (h->root.type == bfd_link_hash_indirect
5354 || h->root.type == bfd_link_hash_warning)
5355 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5356 if (h == hash)
5357 return TRUE;
5358 }
5359 return FALSE;
5360}
5361
5362/* Run through all the TLS relocs looking for optimization
5363 opportunities. */
5364
5365bfd_boolean
5366ppc_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED,
5367 struct bfd_link_info *info)
5368{
5369 bfd *ibfd;
5370 asection *sec;
5371 struct ppc_elf_link_hash_table *htab;
5372 int pass;
5373
5374 if (!bfd_link_executable (info))
5375 return TRUE;
5376
5377 htab = ppc_elf_hash_table (info);
5378 if (htab == NULL)
5379 return FALSE;
5380
5381 /* Make two passes through the relocs. First time check that tls
5382 relocs involved in setting up a tls_get_addr call are indeed
5383 followed by such a call. If they are not, don't do any tls
5384 optimization. On the second pass twiddle tls_mask flags to
5385 notify relocate_section that optimization can be done, and
5386 adjust got and plt refcounts. */
5387 for (pass = 0; pass < 2; ++pass)
5388 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
5389 {
5390 Elf_Internal_Sym *locsyms = NULL;
5391 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
5392 asection *got2 = bfd_get_section_by_name (ibfd, ".got2");
5393
5394 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
5395 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
5396 {
5397 Elf_Internal_Rela *relstart, *rel, *relend;
5398 int expecting_tls_get_addr = 0;
5399
5400 /* Read the relocations. */
5401 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
5402 info->keep_memory);
5403 if (relstart == NULL)
5404 return FALSE;
5405
5406 relend = relstart + sec->reloc_count;
5407 for (rel = relstart; rel < relend; rel++)
5408 {
5409 enum elf_ppc_reloc_type r_type;
5410 unsigned long r_symndx;
5411 struct elf_link_hash_entry *h = NULL;
5412 char *tls_mask;
5413 char tls_set, tls_clear;
5414 bfd_boolean is_local;
5415 bfd_signed_vma *got_count;
5416
5417 r_symndx = ELF32_R_SYM (rel->r_info);
5418 if (r_symndx >= symtab_hdr->sh_info)
5419 {
5420 struct elf_link_hash_entry **sym_hashes;
5421
5422 sym_hashes = elf_sym_hashes (ibfd);
5423 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5424 while (h->root.type == bfd_link_hash_indirect
5425 || h->root.type == bfd_link_hash_warning)
5426 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5427 }
5428
5429 is_local = FALSE;
5430 if (h == NULL
5431 || !h->def_dynamic)
5432 is_local = TRUE;
5433
5434 r_type = ELF32_R_TYPE (rel->r_info);
5435 /* If this section has old-style __tls_get_addr calls
5436 without marker relocs, then check that each
5437 __tls_get_addr call reloc is preceded by a reloc
5438 that conceivably belongs to the __tls_get_addr arg
5439 setup insn. If we don't find matching arg setup
5440 relocs, don't do any tls optimization. */
5441 if (pass == 0
5442 && sec->has_tls_get_addr_call
5443 && h != NULL
5444 && h == htab->tls_get_addr
5445 && !expecting_tls_get_addr
5446 && is_branch_reloc (r_type))
5447 {
5448 info->callbacks->minfo ("%H __tls_get_addr lost arg, "
5449 "TLS optimization disabled\n",
5450 ibfd, sec, rel->r_offset);
5451 if (elf_section_data (sec)->relocs != relstart)
5452 free (relstart);
5453 return TRUE;
5454 }
5455
5456 expecting_tls_get_addr = 0;
5457 switch (r_type)
5458 {
5459 case R_PPC_GOT_TLSLD16:
5460 case R_PPC_GOT_TLSLD16_LO:
5461 expecting_tls_get_addr = 1;
5462 /* Fall through. */
5463
5464 case R_PPC_GOT_TLSLD16_HI:
5465 case R_PPC_GOT_TLSLD16_HA:
5466 /* These relocs should never be against a symbol
5467 defined in a shared lib. Leave them alone if
5468 that turns out to be the case. */
5469 if (!is_local)
5470 continue;
5471
5472 /* LD -> LE */
5473 tls_set = 0;
5474 tls_clear = TLS_LD;
5475 break;
5476
5477 case R_PPC_GOT_TLSGD16:
5478 case R_PPC_GOT_TLSGD16_LO:
5479 expecting_tls_get_addr = 1;
5480 /* Fall through. */
5481
5482 case R_PPC_GOT_TLSGD16_HI:
5483 case R_PPC_GOT_TLSGD16_HA:
5484 if (is_local)
5485 /* GD -> LE */
5486 tls_set = 0;
5487 else
5488 /* GD -> IE */
5489 tls_set = TLS_TLS | TLS_TPRELGD;
5490 tls_clear = TLS_GD;
5491 break;
5492
5493 case R_PPC_GOT_TPREL16:
5494 case R_PPC_GOT_TPREL16_LO:
5495 case R_PPC_GOT_TPREL16_HI:
5496 case R_PPC_GOT_TPREL16_HA:
5497 if (is_local)
5498 {
5499 /* IE -> LE */
5500 tls_set = 0;
5501 tls_clear = TLS_TPREL;
5502 break;
5503 }
5504 else
5505 continue;
5506
5507 case R_PPC_TLSGD:
5508 case R_PPC_TLSLD:
5509 expecting_tls_get_addr = 2;
5510 tls_set = 0;
5511 tls_clear = 0;
5512 break;
5513
5514 default:
5515 continue;
5516 }
5517
5518 if (pass == 0)
5519 {
5520 if (!expecting_tls_get_addr
5521 || (expecting_tls_get_addr == 1
5522 && !sec->has_tls_get_addr_call))
5523 continue;
5524
5525 if (rel + 1 < relend
5526 && branch_reloc_hash_match (ibfd, rel + 1,
5527 htab->tls_get_addr))
5528 continue;
5529
5530 /* Uh oh, we didn't find the expected call. We
5531 could just mark this symbol to exclude it
5532 from tls optimization but it's safer to skip
5533 the entire optimization. */
5534 info->callbacks->minfo (_("%H arg lost __tls_get_addr, "
5535 "TLS optimization disabled\n"),
5536 ibfd, sec, rel->r_offset);
5537 if (elf_section_data (sec)->relocs != relstart)
5538 free (relstart);
5539 return TRUE;
5540 }
5541
5542 if (expecting_tls_get_addr)
5543 {
5544 struct plt_entry *ent;
5545 bfd_vma addend = 0;
5546
5547 if (bfd_link_pic (info)
5548 && ELF32_R_TYPE (rel[1].r_info) == R_PPC_PLTREL24)
5549 addend = rel[1].r_addend;
5550 ent = find_plt_ent (&htab->tls_get_addr->plt.plist,
5551 got2, addend);
5552 if (ent != NULL && ent->plt.refcount > 0)
5553 ent->plt.refcount -= 1;
5554
5555 if (expecting_tls_get_addr == 2)
5556 continue;
5557 }
5558
5559 if (h != NULL)
5560 {
5561 tls_mask = &ppc_elf_hash_entry (h)->tls_mask;
5562 got_count = &h->got.refcount;
5563 }
5564 else
5565 {
5566 bfd_signed_vma *lgot_refs;
5567 struct plt_entry **local_plt;
5568 char *lgot_masks;
5569
5570 if (locsyms == NULL)
5571 {
5572 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
5573 if (locsyms == NULL)
5574 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
5575 symtab_hdr->sh_info,
5576 0, NULL, NULL, NULL);
5577 if (locsyms == NULL)
5578 {
5579 if (elf_section_data (sec)->relocs != relstart)
5580 free (relstart);
5581 return FALSE;
5582 }
5583 }
5584 lgot_refs = elf_local_got_refcounts (ibfd);
5585 if (lgot_refs == NULL)
5586 abort ();
5587 local_plt = (struct plt_entry **)
5588 (lgot_refs + symtab_hdr->sh_info);
5589 lgot_masks = (char *) (local_plt + symtab_hdr->sh_info);
5590 tls_mask = &lgot_masks[r_symndx];
5591 got_count = &lgot_refs[r_symndx];
5592 }
5593
5594 if (tls_set == 0)
5595 {
5596 /* We managed to get rid of a got entry. */
5597 if (*got_count > 0)
5598 *got_count -= 1;
5599 }
5600
5601 *tls_mask |= tls_set;
5602 *tls_mask &= ~tls_clear;
5603 }
5604
5605 if (elf_section_data (sec)->relocs != relstart)
5606 free (relstart);
5607 }
5608
5609 if (locsyms != NULL
5610 && (symtab_hdr->contents != (unsigned char *) locsyms))
5611 {
5612 if (!info->keep_memory)
5613 free (locsyms);
5614 else
5615 symtab_hdr->contents = (unsigned char *) locsyms;
5616 }
5617 }
5618 return TRUE;
5619}
5620\f
5621/* Return true if we have dynamic relocs that apply to read-only sections. */
5622
5623static bfd_boolean
5624readonly_dynrelocs (struct elf_link_hash_entry *h)
5625{
5626 struct elf_dyn_relocs *p;
5627
5628 for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next)
5629 {
5630 asection *s = p->sec->output_section;
5631
5632 if (s != NULL
5633 && ((s->flags & (SEC_READONLY | SEC_ALLOC))
5634 == (SEC_READONLY | SEC_ALLOC)))
5635 return TRUE;
5636 }
5637 return FALSE;
5638}
5639
5640/* Adjust a symbol defined by a dynamic object and referenced by a
5641 regular object. The current definition is in some section of the
5642 dynamic object, but we're not including those sections. We have to
5643 change the definition to something the rest of the link can
5644 understand. */
5645
5646static bfd_boolean
5647ppc_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
5648 struct elf_link_hash_entry *h)
5649{
5650 struct ppc_elf_link_hash_table *htab;
5651 asection *s;
5652
5653#ifdef DEBUG
5654 fprintf (stderr, "ppc_elf_adjust_dynamic_symbol called for %s\n",
5655 h->root.root.string);
5656#endif
5657
5658 /* Make sure we know what is going on here. */
5659 htab = ppc_elf_hash_table (info);
5660 BFD_ASSERT (htab->elf.dynobj != NULL
5661 && (h->needs_plt
5662 || h->type == STT_GNU_IFUNC
5663 || h->u.weakdef != NULL
5664 || (h->def_dynamic
5665 && h->ref_regular
5666 && !h->def_regular)));
5667
5668 /* Deal with function syms. */
5669 if (h->type == STT_FUNC
5670 || h->type == STT_GNU_IFUNC
5671 || h->needs_plt)
5672 {
5673 /* Clear procedure linkage table information for any symbol that
5674 won't need a .plt entry. */
5675 struct plt_entry *ent;
5676 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
5677 if (ent->plt.refcount > 0)
5678 break;
5679 if (ent == NULL
5680 || (h->type != STT_GNU_IFUNC
5681 && (SYMBOL_CALLS_LOCAL (info, h)
5682 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
5683 && h->root.type == bfd_link_hash_undefweak))))
5684 {
5685 /* A PLT entry is not required/allowed when:
5686
5687 1. We are not using ld.so; because then the PLT entry
5688 can't be set up, so we can't use one. In this case,
5689 ppc_elf_adjust_dynamic_symbol won't even be called.
5690
5691 2. GC has rendered the entry unused.
5692
5693 3. We know for certain that a call to this symbol
5694 will go to this object, or will remain undefined. */
5695 h->plt.plist = NULL;
5696 h->needs_plt = 0;
5697 h->pointer_equality_needed = 0;
5698 }
5699 else
5700 {
5701 /* Taking a function's address in a read/write section
5702 doesn't require us to define the function symbol in the
5703 executable on a plt call stub. A dynamic reloc can
5704 be used instead, giving better runtime performance.
5705 (Calls via that function pointer don't need to bounce
5706 through the plt call stub.) Similarly, use a dynamic
5707 reloc for a weak reference when possible, allowing the
5708 resolution of the symbol to be set at load time rather
5709 than link time. */
5710 if ((h->pointer_equality_needed
5711 || (!h->ref_regular_nonweak && h->non_got_ref))
5712 && !htab->is_vxworks
5713 && !ppc_elf_hash_entry (h)->has_sda_refs
5714 && !readonly_dynrelocs (h))
5715 {
5716 h->pointer_equality_needed = 0;
5717 /* After adjust_dynamic_symbol, non_got_ref set in the
5718 non-pic case means that dyn_relocs for this symbol
5719 should be discarded. */
5720 h->non_got_ref = 0;
5721 }
5722 }
5723 h->protected_def = 0;
5724 return TRUE;
5725 }
5726 else
5727 h->plt.plist = NULL;
5728
5729 /* If this is a weak symbol, and there is a real definition, the
5730 processor independent code will have arranged for us to see the
5731 real definition first, and we can just use the same value. */
5732 if (h->u.weakdef != NULL)
5733 {
5734 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
5735 || h->u.weakdef->root.type == bfd_link_hash_defweak);
5736 h->root.u.def.section = h->u.weakdef->root.u.def.section;
5737 h->root.u.def.value = h->u.weakdef->root.u.def.value;
5738 if (ELIMINATE_COPY_RELOCS)
5739 h->non_got_ref = h->u.weakdef->non_got_ref;
5740 return TRUE;
5741 }
5742
5743 /* This is a reference to a symbol defined by a dynamic object which
5744 is not a function. */
5745
5746 /* If we are creating a shared library, we must presume that the
5747 only references to the symbol are via the global offset table.
5748 For such cases we need not do anything here; the relocations will
5749 be handled correctly by relocate_section. */
5750 if (bfd_link_pic (info))
5751 {
5752 h->protected_def = 0;
5753 return TRUE;
5754 }
5755
5756 /* If there are no references to this symbol that do not use the
5757 GOT, we don't need to generate a copy reloc. */
5758 if (!h->non_got_ref)
5759 {
5760 h->protected_def = 0;
5761 return TRUE;
5762 }
5763
5764 /* Protected variables do not work with .dynbss. The copy in
5765 .dynbss won't be used by the shared library with the protected
5766 definition for the variable. Editing to PIC, or text relocations
5767 are preferable to an incorrect program. */
5768 if (h->protected_def)
5769 {
5770 if (ELIMINATE_COPY_RELOCS
5771 && ppc_elf_hash_entry (h)->has_addr16_ha
5772 && ppc_elf_hash_entry (h)->has_addr16_lo
5773 && htab->params->pic_fixup == 0
5774 && info->disable_target_specific_optimizations <= 1)
5775 htab->params->pic_fixup = 1;
5776 h->non_got_ref = 0;
5777 return TRUE;
5778 }
5779
5780 /* If -z nocopyreloc was given, we won't generate them either. */
5781 if (info->nocopyreloc)
5782 {
5783 h->non_got_ref = 0;
5784 return TRUE;
5785 }
5786
5787 /* If we didn't find any dynamic relocs in read-only sections, then
5788 we'll be keeping the dynamic relocs and avoiding the copy reloc.
5789 We can't do this if there are any small data relocations. This
5790 doesn't work on VxWorks, where we can not have dynamic
5791 relocations (other than copy and jump slot relocations) in an
5792 executable. */
5793 if (ELIMINATE_COPY_RELOCS
5794 && !ppc_elf_hash_entry (h)->has_sda_refs
5795 && !htab->is_vxworks
5796 && !h->def_regular
5797 && !readonly_dynrelocs (h))
5798 {
5799 h->non_got_ref = 0;
5800 return TRUE;
5801 }
5802
5803 /* We must allocate the symbol in our .dynbss section, which will
5804 become part of the .bss section of the executable. There will be
5805 an entry for this symbol in the .dynsym section. The dynamic
5806 object will contain position independent code, so all references
5807 from the dynamic object to this symbol will go through the global
5808 offset table. The dynamic linker will use the .dynsym entry to
5809 determine the address it must put in the global offset table, so
5810 both the dynamic object and the regular object will refer to the
5811 same memory location for the variable.
5812
5813 Of course, if the symbol is referenced using SDAREL relocs, we
5814 must instead allocate it in .sbss. */
5815
5816 if (ppc_elf_hash_entry (h)->has_sda_refs)
5817 s = htab->dynsbss;
5818 else if ((h->root.u.def.section->flags & SEC_READONLY) != 0)
5819 s = htab->elf.sdynrelro;
5820 else
5821 s = htab->elf.sdynbss;
5822 BFD_ASSERT (s != NULL);
5823
5824 /* We must generate a R_PPC_COPY reloc to tell the dynamic linker to
5825 copy the initial value out of the dynamic object and into the
5826 runtime process image. We need to remember the offset into the
5827 .rela.bss section we are going to use. */
5828 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
5829 {
5830 asection *srel;
5831
5832 if (ppc_elf_hash_entry (h)->has_sda_refs)
5833 srel = htab->relsbss;
5834 else if ((h->root.u.def.section->flags & SEC_READONLY) != 0)
5835 srel = htab->elf.sreldynrelro;
5836 else
5837 srel = htab->elf.srelbss;
5838 BFD_ASSERT (srel != NULL);
5839 srel->size += sizeof (Elf32_External_Rela);
5840 h->needs_copy = 1;
5841 }
5842
5843 return _bfd_elf_adjust_dynamic_copy (info, h, s);
5844}
5845\f
5846/* Generate a symbol to mark plt call stubs. For non-PIC code the sym is
5847 xxxxxxxx.plt_call32.<callee> where xxxxxxxx is a hex number, usually 0,
5848 specifying the addend on the plt relocation. For -fpic code, the sym
5849 is xxxxxxxx.plt_pic32.<callee>, and for -fPIC
5850 xxxxxxxx.got2.plt_pic32.<callee>. */
5851
5852static bfd_boolean
5853add_stub_sym (struct plt_entry *ent,
5854 struct elf_link_hash_entry *h,
5855 struct bfd_link_info *info)
5856{
5857 struct elf_link_hash_entry *sh;
5858 size_t len1, len2, len3;
5859 char *name;
5860 const char *stub;
5861 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
5862
5863 if (bfd_link_pic (info))
5864 stub = ".plt_pic32.";
5865 else
5866 stub = ".plt_call32.";
5867
5868 len1 = strlen (h->root.root.string);
5869 len2 = strlen (stub);
5870 len3 = 0;
5871 if (ent->sec)
5872 len3 = strlen (ent->sec->name);
5873 name = bfd_malloc (len1 + len2 + len3 + 9);
5874 if (name == NULL)
5875 return FALSE;
5876 sprintf (name, "%08x", (unsigned) ent->addend & 0xffffffff);
5877 if (ent->sec)
5878 memcpy (name + 8, ent->sec->name, len3);
5879 memcpy (name + 8 + len3, stub, len2);
5880 memcpy (name + 8 + len3 + len2, h->root.root.string, len1 + 1);
5881 sh = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
5882 if (sh == NULL)
5883 return FALSE;
5884 if (sh->root.type == bfd_link_hash_new)
5885 {
5886 sh->root.type = bfd_link_hash_defined;
5887 sh->root.u.def.section = htab->glink;
5888 sh->root.u.def.value = ent->glink_offset;
5889 sh->ref_regular = 1;
5890 sh->def_regular = 1;
5891 sh->ref_regular_nonweak = 1;
5892 sh->forced_local = 1;
5893 sh->non_elf = 0;
5894 sh->root.linker_def = 1;
5895 }
5896 return TRUE;
5897}
5898
5899/* Allocate NEED contiguous space in .got, and return the offset.
5900 Handles allocation of the got header when crossing 32k. */
5901
5902static bfd_vma
5903allocate_got (struct ppc_elf_link_hash_table *htab, unsigned int need)
5904{
5905 bfd_vma where;
5906 unsigned int max_before_header;
5907
5908 if (htab->plt_type == PLT_VXWORKS)
5909 {
5910 where = htab->elf.sgot->size;
5911 htab->elf.sgot->size += need;
5912 }
5913 else
5914 {
5915 max_before_header = htab->plt_type == PLT_NEW ? 32768 : 32764;
5916 if (need <= htab->got_gap)
5917 {
5918 where = max_before_header - htab->got_gap;
5919 htab->got_gap -= need;
5920 }
5921 else
5922 {
5923 if (htab->elf.sgot->size + need > max_before_header
5924 && htab->elf.sgot->size <= max_before_header)
5925 {
5926 htab->got_gap = max_before_header - htab->elf.sgot->size;
5927 htab->elf.sgot->size = max_before_header + htab->got_header_size;
5928 }
5929 where = htab->elf.sgot->size;
5930 htab->elf.sgot->size += need;
5931 }
5932 }
5933 return where;
5934}
5935
5936/* If H is undefined weak, make it dynamic if that makes sense. */
5937
5938static bfd_boolean
5939ensure_undefweak_dynamic (struct bfd_link_info *info,
5940 struct elf_link_hash_entry *h)
5941{
5942 struct elf_link_hash_table *htab = elf_hash_table (info);
5943
5944 if (htab->dynamic_sections_created
5945 && h->root.type == bfd_link_hash_undefweak
5946 && h->dynindx == -1
5947 && !h->forced_local
5948 && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
5949 return bfd_elf_link_record_dynamic_symbol (info, h);
5950 return TRUE;
5951}
5952
5953/* Allocate space in associated reloc sections for dynamic relocs. */
5954
5955static bfd_boolean
5956allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
5957{
5958 struct bfd_link_info *info = inf;
5959 struct ppc_elf_link_hash_entry *eh;
5960 struct ppc_elf_link_hash_table *htab;
5961 struct elf_dyn_relocs *p;
5962 bfd_boolean dyn;
5963
5964 if (h->root.type == bfd_link_hash_indirect)
5965 return TRUE;
5966
5967 htab = ppc_elf_hash_table (info);
5968 eh = (struct ppc_elf_link_hash_entry *) h;
5969 if (eh->elf.got.refcount > 0
5970 || (ELIMINATE_COPY_RELOCS
5971 && !eh->elf.def_regular
5972 && eh->elf.protected_def
5973 && eh->has_addr16_ha
5974 && eh->has_addr16_lo
5975 && htab->params->pic_fixup > 0))
5976 {
5977 unsigned int need;
5978
5979 /* Make sure this symbol is output as a dynamic symbol.
5980 Undefined weak syms won't yet be marked as dynamic. */
5981 if (!ensure_undefweak_dynamic (info, &eh->elf))
5982 return FALSE;
5983
5984 need = 0;
5985 if ((eh->tls_mask & TLS_TLS) != 0)
5986 {
5987 if ((eh->tls_mask & TLS_LD) != 0)
5988 {
5989 if (!eh->elf.def_dynamic)
5990 /* We'll just use htab->tlsld_got.offset. This should
5991 always be the case. It's a little odd if we have
5992 a local dynamic reloc against a non-local symbol. */
5993 htab->tlsld_got.refcount += 1;
5994 else
5995 need += 8;
5996 }
5997 if ((eh->tls_mask & TLS_GD) != 0)
5998 need += 8;
5999 if ((eh->tls_mask & (TLS_TPREL | TLS_TPRELGD)) != 0)
6000 need += 4;
6001 if ((eh->tls_mask & TLS_DTPREL) != 0)
6002 need += 4;
6003 }
6004 else
6005 need += 4;
6006 if (need == 0)
6007 eh->elf.got.offset = (bfd_vma) -1;
6008 else
6009 {
6010 eh->elf.got.offset = allocate_got (htab, need);
6011 if ((bfd_link_pic (info)
6012 || (htab->elf.dynamic_sections_created
6013 && eh->elf.dynindx != -1
6014 && !SYMBOL_REFERENCES_LOCAL (info, &eh->elf)))
6015 && (ELF_ST_VISIBILITY (eh->elf.other) == STV_DEFAULT
6016 || eh->elf.root.type != bfd_link_hash_undefweak))
6017 {
6018 asection *rsec = htab->elf.srelgot;
6019
6020 if (eh->elf.type == STT_GNU_IFUNC)
6021 rsec = htab->elf.irelplt;
6022 /* All the entries we allocated need relocs.
6023 Except LD only needs one. */
6024 if ((eh->tls_mask & TLS_LD) != 0
6025 && eh->elf.def_dynamic)
6026 need -= 4;
6027 rsec->size += need * (sizeof (Elf32_External_Rela) / 4);
6028 }
6029 }
6030 }
6031 else
6032 eh->elf.got.offset = (bfd_vma) -1;
6033
6034 if (!htab->elf.dynamic_sections_created
6035 && h->type != STT_GNU_IFUNC)
6036 eh->dyn_relocs = NULL;
6037
6038 if (eh->dyn_relocs == NULL)
6039 ;
6040
6041 /* In the shared -Bsymbolic case, discard space allocated for
6042 dynamic pc-relative relocs against symbols which turn out to be
6043 defined in regular objects. For the normal shared case, discard
6044 space for relocs that have become local due to symbol visibility
6045 changes. */
6046 else if (bfd_link_pic (info))
6047 {
6048 /* Relocs that use pc_count are those that appear on a call insn,
6049 or certain REL relocs (see must_be_dyn_reloc) that can be
6050 generated via assembly. We want calls to protected symbols to
6051 resolve directly to the function rather than going via the plt.
6052 If people want function pointer comparisons to work as expected
6053 then they should avoid writing weird assembly. */
6054 if (SYMBOL_CALLS_LOCAL (info, h))
6055 {
6056 struct elf_dyn_relocs **pp;
6057
6058 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
6059 {
6060 p->count -= p->pc_count;
6061 p->pc_count = 0;
6062 if (p->count == 0)
6063 *pp = p->next;
6064 else
6065 pp = &p->next;
6066 }
6067 }
6068
6069 if (htab->is_vxworks)
6070 {
6071 struct elf_dyn_relocs **pp;
6072
6073 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
6074 {
6075 if (strcmp (p->sec->output_section->name, ".tls_vars") == 0)
6076 *pp = p->next;
6077 else
6078 pp = &p->next;
6079 }
6080 }
6081
6082 /* Discard relocs on undefined symbols that must be local. */
6083 if (eh->dyn_relocs != NULL
6084 && h->root.type == bfd_link_hash_undefined
6085 && (ELF_ST_VISIBILITY (h->other) == STV_HIDDEN
6086 || ELF_ST_VISIBILITY (h->other) == STV_INTERNAL))
6087 eh->dyn_relocs = NULL;
6088
6089 /* Also discard relocs on undefined weak syms with non-default
6090 visibility. */
6091 if (eh->dyn_relocs != NULL
6092 && h->root.type == bfd_link_hash_undefweak)
6093 {
6094 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
6095 eh->dyn_relocs = NULL;
6096
6097 /* Make sure undefined weak symbols are output as a dynamic
6098 symbol in PIEs. */
6099 else if (!ensure_undefweak_dynamic (info, h))
6100 return FALSE;
6101 }
6102 }
6103 else if (ELIMINATE_COPY_RELOCS)
6104 {
6105 /* For the non-pic case, discard space for relocs against
6106 symbols which turn out to need copy relocs or are not
6107 dynamic. */
6108 if (!h->non_got_ref
6109 && !h->def_regular
6110 && !(h->protected_def
6111 && eh->has_addr16_ha
6112 && eh->has_addr16_lo
6113 && htab->params->pic_fixup > 0))
6114 {
6115 /* Make sure this symbol is output as a dynamic symbol.
6116 Undefined weak syms won't yet be marked as dynamic. */
6117 if (!ensure_undefweak_dynamic (info, h))
6118 return FALSE;
6119
6120 if (h->dynindx == -1)
6121 eh->dyn_relocs = NULL;
6122 }
6123 else
6124 eh->dyn_relocs = NULL;
6125 }
6126
6127 /* Allocate space. */
6128 for (p = eh->dyn_relocs; p != NULL; p = p->next)
6129 {
6130 asection *sreloc = elf_section_data (p->sec)->sreloc;
6131 if (eh->elf.type == STT_GNU_IFUNC)
6132 sreloc = htab->elf.irelplt;
6133 sreloc->size += p->count * sizeof (Elf32_External_Rela);
6134 }
6135
6136 /* Handle PLT relocs. Done last, after dynindx has settled. */
6137 dyn = htab->elf.dynamic_sections_created && h->dynindx != -1;
6138 if (dyn || h->type == STT_GNU_IFUNC)
6139 {
6140 struct plt_entry *ent;
6141 bfd_boolean doneone = FALSE;
6142 bfd_vma plt_offset = 0, glink_offset = 0;
6143
6144 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
6145 if (ent->plt.refcount > 0)
6146 {
6147 asection *s = htab->elf.splt;
6148
6149 if (!dyn)
6150 s = htab->elf.iplt;
6151
6152 if (htab->plt_type == PLT_NEW || !dyn)
6153 {
6154 if (!doneone)
6155 {
6156 plt_offset = s->size;
6157 s->size += 4;
6158 }
6159 ent->plt.offset = plt_offset;
6160
6161 s = htab->glink;
6162 if (!doneone || bfd_link_pic (info))
6163 {
6164 glink_offset = s->size;
6165 s->size += GLINK_ENTRY_SIZE;
6166 if (h == htab->tls_get_addr
6167 && !htab->params->no_tls_get_addr_opt)
6168 s->size += TLS_GET_ADDR_GLINK_SIZE - GLINK_ENTRY_SIZE;
6169 }
6170 if (!doneone
6171 && !bfd_link_pic (info)
6172 && h->def_dynamic
6173 && !h->def_regular)
6174 {
6175 h->root.u.def.section = s;
6176 h->root.u.def.value = glink_offset;
6177 }
6178 ent->glink_offset = glink_offset;
6179
6180 if (htab->params->emit_stub_syms
6181 && !add_stub_sym (ent, h, info))
6182 return FALSE;
6183 }
6184 else
6185 {
6186 if (!doneone)
6187 {
6188 /* If this is the first .plt entry, make room
6189 for the special first entry. */
6190 if (s->size == 0)
6191 s->size += htab->plt_initial_entry_size;
6192
6193 /* The PowerPC PLT is actually composed of two
6194 parts, the first part is 2 words (for a load
6195 and a jump), and then there is a remaining
6196 word available at the end. */
6197 plt_offset = (htab->plt_initial_entry_size
6198 + (htab->plt_slot_size
6199 * ((s->size
6200 - htab->plt_initial_entry_size)
6201 / htab->plt_entry_size)));
6202
6203 /* If this symbol is not defined in a regular
6204 file, and we are not generating a shared
6205 library, then set the symbol to this location
6206 in the .plt. This is to avoid text
6207 relocations, and is required to make
6208 function pointers compare as equal between
6209 the normal executable and the shared library. */
6210 if (! bfd_link_pic (info)
6211 && h->def_dynamic
6212 && !h->def_regular)
6213 {
6214 h->root.u.def.section = s;
6215 h->root.u.def.value = plt_offset;
6216 }
6217
6218 /* Make room for this entry. */
6219 s->size += htab->plt_entry_size;
6220 /* After the 8192nd entry, room for two entries
6221 is allocated. */
6222 if (htab->plt_type == PLT_OLD
6223 && (s->size - htab->plt_initial_entry_size)
6224 / htab->plt_entry_size
6225 > PLT_NUM_SINGLE_ENTRIES)
6226 s->size += htab->plt_entry_size;
6227 }
6228 ent->plt.offset = plt_offset;
6229 }
6230
6231 /* We also need to make an entry in the .rela.plt section. */
6232 if (!doneone)
6233 {
6234 if (!dyn)
6235 htab->elf.irelplt->size += sizeof (Elf32_External_Rela);
6236 else
6237 {
6238 htab->elf.srelplt->size += sizeof (Elf32_External_Rela);
6239
6240 if (htab->plt_type == PLT_VXWORKS)
6241 {
6242 /* Allocate space for the unloaded relocations. */
6243 if (!bfd_link_pic (info)
6244 && htab->elf.dynamic_sections_created)
6245 {
6246 if (ent->plt.offset
6247 == (bfd_vma) htab->plt_initial_entry_size)
6248 {
6249 htab->srelplt2->size
6250 += (sizeof (Elf32_External_Rela)
6251 * VXWORKS_PLTRESOLVE_RELOCS);
6252 }
6253
6254 htab->srelplt2->size
6255 += (sizeof (Elf32_External_Rela)
6256 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS);
6257 }
6258
6259 /* Every PLT entry has an associated GOT entry in
6260 .got.plt. */
6261 htab->elf.sgotplt->size += 4;
6262 }
6263 }
6264 doneone = TRUE;
6265 }
6266 }
6267 else
6268 ent->plt.offset = (bfd_vma) -1;
6269
6270 if (!doneone)
6271 {
6272 h->plt.plist = NULL;
6273 h->needs_plt = 0;
6274 }
6275 }
6276 else
6277 {
6278 h->plt.plist = NULL;
6279 h->needs_plt = 0;
6280 }
6281
6282 return TRUE;
6283}
6284
6285/* Set DF_TEXTREL if we find any dynamic relocs that apply to
6286 read-only sections. */
6287
6288static bfd_boolean
6289maybe_set_textrel (struct elf_link_hash_entry *h, void *info)
6290{
6291 if (h->root.type == bfd_link_hash_indirect)
6292 return TRUE;
6293
6294 if (readonly_dynrelocs (h))
6295 {
6296 ((struct bfd_link_info *) info)->flags |= DF_TEXTREL;
6297
6298 /* Not an error, just cut short the traversal. */
6299 return FALSE;
6300 }
6301 return TRUE;
6302}
6303
6304static const unsigned char glink_eh_frame_cie[] =
6305{
6306 0, 0, 0, 16, /* length. */
6307 0, 0, 0, 0, /* id. */
6308 1, /* CIE version. */
6309 'z', 'R', 0, /* Augmentation string. */
6310 4, /* Code alignment. */
6311 0x7c, /* Data alignment. */
6312 65, /* RA reg. */
6313 1, /* Augmentation size. */
6314 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding. */
6315 DW_CFA_def_cfa, 1, 0 /* def_cfa: r1 offset 0. */
6316};
6317
6318/* Set the sizes of the dynamic sections. */
6319
6320static bfd_boolean
6321ppc_elf_size_dynamic_sections (bfd *output_bfd,
6322 struct bfd_link_info *info)
6323{
6324 struct ppc_elf_link_hash_table *htab;
6325 asection *s;
6326 bfd_boolean relocs;
6327 bfd *ibfd;
6328
6329#ifdef DEBUG
6330 fprintf (stderr, "ppc_elf_size_dynamic_sections called\n");
6331#endif
6332
6333 htab = ppc_elf_hash_table (info);
6334 BFD_ASSERT (htab->elf.dynobj != NULL);
6335
6336 if (elf_hash_table (info)->dynamic_sections_created)
6337 {
6338 /* Set the contents of the .interp section to the interpreter. */
6339 if (bfd_link_executable (info) && !info->nointerp)
6340 {
6341 s = bfd_get_linker_section (htab->elf.dynobj, ".interp");
6342 BFD_ASSERT (s != NULL);
6343 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
6344 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
6345 }
6346 }
6347
6348 if (htab->plt_type == PLT_OLD)
6349 htab->got_header_size = 16;
6350 else if (htab->plt_type == PLT_NEW)
6351 htab->got_header_size = 12;
6352
6353 /* Set up .got offsets for local syms, and space for local dynamic
6354 relocs. */
6355 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
6356 {
6357 bfd_signed_vma *local_got;
6358 bfd_signed_vma *end_local_got;
6359 struct plt_entry **local_plt;
6360 struct plt_entry **end_local_plt;
6361 char *lgot_masks;
6362 bfd_size_type locsymcount;
6363 Elf_Internal_Shdr *symtab_hdr;
6364
6365 if (!is_ppc_elf (ibfd))
6366 continue;
6367
6368 for (s = ibfd->sections; s != NULL; s = s->next)
6369 {
6370 struct ppc_dyn_relocs *p;
6371
6372 for (p = ((struct ppc_dyn_relocs *)
6373 elf_section_data (s)->local_dynrel);
6374 p != NULL;
6375 p = p->next)
6376 {
6377 if (!bfd_is_abs_section (p->sec)
6378 && bfd_is_abs_section (p->sec->output_section))
6379 {
6380 /* Input section has been discarded, either because
6381 it is a copy of a linkonce section or due to
6382 linker script /DISCARD/, so we'll be discarding
6383 the relocs too. */
6384 }
6385 else if (htab->is_vxworks
6386 && strcmp (p->sec->output_section->name,
6387 ".tls_vars") == 0)
6388 {
6389 /* Relocations in vxworks .tls_vars sections are
6390 handled specially by the loader. */
6391 }
6392 else if (p->count != 0)
6393 {
6394 asection *sreloc = elf_section_data (p->sec)->sreloc;
6395 if (p->ifunc)
6396 sreloc = htab->elf.irelplt;
6397 sreloc->size += p->count * sizeof (Elf32_External_Rela);
6398 if ((p->sec->output_section->flags
6399 & (SEC_READONLY | SEC_ALLOC))
6400 == (SEC_READONLY | SEC_ALLOC))
6401 info->flags |= DF_TEXTREL;
6402 }
6403 }
6404 }
6405
6406 local_got = elf_local_got_refcounts (ibfd);
6407 if (!local_got)
6408 continue;
6409
6410 symtab_hdr = &elf_symtab_hdr (ibfd);
6411 locsymcount = symtab_hdr->sh_info;
6412 end_local_got = local_got + locsymcount;
6413 local_plt = (struct plt_entry **) end_local_got;
6414 end_local_plt = local_plt + locsymcount;
6415 lgot_masks = (char *) end_local_plt;
6416
6417 for (; local_got < end_local_got; ++local_got, ++lgot_masks)
6418 if (*local_got > 0)
6419 {
6420 unsigned int need = 0;
6421 if ((*lgot_masks & TLS_TLS) != 0)
6422 {
6423 if ((*lgot_masks & TLS_GD) != 0)
6424 need += 8;
6425 if ((*lgot_masks & TLS_LD) != 0)
6426 htab->tlsld_got.refcount += 1;
6427 if ((*lgot_masks & (TLS_TPREL | TLS_TPRELGD)) != 0)
6428 need += 4;
6429 if ((*lgot_masks & TLS_DTPREL) != 0)
6430 need += 4;
6431 }
6432 else
6433 need += 4;
6434 if (need == 0)
6435 *local_got = (bfd_vma) -1;
6436 else
6437 {
6438 *local_got = allocate_got (htab, need);
6439 if (bfd_link_pic (info))
6440 {
6441 asection *srel = htab->elf.srelgot;
6442 if ((*lgot_masks & PLT_IFUNC) != 0)
6443 srel = htab->elf.irelplt;
6444 srel->size += need * (sizeof (Elf32_External_Rela) / 4);
6445 }
6446 }
6447 }
6448 else
6449 *local_got = (bfd_vma) -1;
6450
6451 if (htab->is_vxworks)
6452 continue;
6453
6454 /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */
6455 for (; local_plt < end_local_plt; ++local_plt)
6456 {
6457 struct plt_entry *ent;
6458 bfd_boolean doneone = FALSE;
6459 bfd_vma plt_offset = 0, glink_offset = 0;
6460
6461 for (ent = *local_plt; ent != NULL; ent = ent->next)
6462 if (ent->plt.refcount > 0)
6463 {
6464 s = htab->elf.iplt;
6465
6466 if (!doneone)
6467 {
6468 plt_offset = s->size;
6469 s->size += 4;
6470 }
6471 ent->plt.offset = plt_offset;
6472
6473 s = htab->glink;
6474 if (!doneone || bfd_link_pic (info))
6475 {
6476 glink_offset = s->size;
6477 s->size += GLINK_ENTRY_SIZE;
6478 }
6479 ent->glink_offset = glink_offset;
6480
6481 if (!doneone)
6482 {
6483 htab->elf.irelplt->size += sizeof (Elf32_External_Rela);
6484 doneone = TRUE;
6485 }
6486 }
6487 else
6488 ent->plt.offset = (bfd_vma) -1;
6489 }
6490 }
6491
6492 /* Allocate space for global sym dynamic relocs. */
6493 elf_link_hash_traverse (elf_hash_table (info), allocate_dynrelocs, info);
6494
6495 if (htab->tlsld_got.refcount > 0)
6496 {
6497 htab->tlsld_got.offset = allocate_got (htab, 8);
6498 if (bfd_link_pic (info))
6499 htab->elf.srelgot->size += sizeof (Elf32_External_Rela);
6500 }
6501 else
6502 htab->tlsld_got.offset = (bfd_vma) -1;
6503
6504 if (htab->elf.sgot != NULL && htab->plt_type != PLT_VXWORKS)
6505 {
6506 unsigned int g_o_t = 32768;
6507
6508 /* If we haven't allocated the header, do so now. When we get here,
6509 for old plt/got the got size will be 0 to 32764 (not allocated),
6510 or 32780 to 65536 (header allocated). For new plt/got, the
6511 corresponding ranges are 0 to 32768 and 32780 to 65536. */
6512 if (htab->elf.sgot->size <= 32768)
6513 {
6514 g_o_t = htab->elf.sgot->size;
6515 if (htab->plt_type == PLT_OLD)
6516 g_o_t += 4;
6517 htab->elf.sgot->size += htab->got_header_size;
6518 }
6519
6520 htab->elf.hgot->root.u.def.value = g_o_t;
6521 }
6522 if (bfd_link_pic (info))
6523 {
6524 struct elf_link_hash_entry *sda = htab->sdata[0].sym;
6525
6526 sda->root.u.def.section = htab->elf.hgot->root.u.def.section;
6527 sda->root.u.def.value = htab->elf.hgot->root.u.def.value;
6528 }
6529 if (info->emitrelocations)
6530 {
6531 struct elf_link_hash_entry *sda = htab->sdata[0].sym;
6532
6533 if (sda != NULL && sda->ref_regular)
6534 sda->root.u.def.section->flags |= SEC_KEEP;
6535 sda = htab->sdata[1].sym;
6536 if (sda != NULL && sda->ref_regular)
6537 sda->root.u.def.section->flags |= SEC_KEEP;
6538 }
6539
6540 if (htab->glink != NULL
6541 && htab->glink->size != 0
6542 && htab->elf.dynamic_sections_created)
6543 {
6544 htab->glink_pltresolve = htab->glink->size;
6545 /* Space for the branch table. ??? We don't need entries for
6546 non-dynamic symbols in this table. This case can arise with
6547 static ifuncs or forced local ifuncs. */
6548 htab->glink->size += htab->glink->size / (GLINK_ENTRY_SIZE / 4) - 4;
6549 /* Pad out to align the start of PLTresolve. */
6550 htab->glink->size += -htab->glink->size & (htab->params->ppc476_workaround
6551 ? 63 : 15);
6552 htab->glink->size += GLINK_PLTRESOLVE;
6553
6554 if (htab->params->emit_stub_syms)
6555 {
6556 struct elf_link_hash_entry *sh;
6557 sh = elf_link_hash_lookup (&htab->elf, "__glink",
6558 TRUE, FALSE, FALSE);
6559 if (sh == NULL)
6560 return FALSE;
6561 if (sh->root.type == bfd_link_hash_new)
6562 {
6563 sh->root.type = bfd_link_hash_defined;
6564 sh->root.u.def.section = htab->glink;
6565 sh->root.u.def.value = htab->glink_pltresolve;
6566 sh->ref_regular = 1;
6567 sh->def_regular = 1;
6568 sh->ref_regular_nonweak = 1;
6569 sh->forced_local = 1;
6570 sh->non_elf = 0;
6571 sh->root.linker_def = 1;
6572 }
6573 sh = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve",
6574 TRUE, FALSE, FALSE);
6575 if (sh == NULL)
6576 return FALSE;
6577 if (sh->root.type == bfd_link_hash_new)
6578 {
6579 sh->root.type = bfd_link_hash_defined;
6580 sh->root.u.def.section = htab->glink;
6581 sh->root.u.def.value = htab->glink->size - GLINK_PLTRESOLVE;
6582 sh->ref_regular = 1;
6583 sh->def_regular = 1;
6584 sh->ref_regular_nonweak = 1;
6585 sh->forced_local = 1;
6586 sh->non_elf = 0;
6587 sh->root.linker_def = 1;
6588 }
6589 }
6590 }
6591
6592 if (htab->glink != NULL
6593 && htab->glink->size != 0
6594 && htab->glink_eh_frame != NULL
6595 && !bfd_is_abs_section (htab->glink_eh_frame->output_section)
6596 && _bfd_elf_eh_frame_present (info))
6597 {
6598 s = htab->glink_eh_frame;
6599 s->size = sizeof (glink_eh_frame_cie) + 20;
6600 if (bfd_link_pic (info))
6601 {
6602 s->size += 4;
6603 if (htab->glink->size - GLINK_PLTRESOLVE + 8 >= 256)
6604 s->size += 4;
6605 }
6606 }
6607
6608 /* We've now determined the sizes of the various dynamic sections.
6609 Allocate memory for them. */
6610 relocs = FALSE;
6611 for (s = htab->elf.dynobj->sections; s != NULL; s = s->next)
6612 {
6613 bfd_boolean strip_section = TRUE;
6614
6615 if ((s->flags & SEC_LINKER_CREATED) == 0)
6616 continue;
6617
6618 if (s == htab->elf.splt
6619 || s == htab->elf.sgot)
6620 {
6621 /* We'd like to strip these sections if they aren't needed, but if
6622 we've exported dynamic symbols from them we must leave them.
6623 It's too late to tell BFD to get rid of the symbols. */
6624 if (htab->elf.hplt != NULL)
6625 strip_section = FALSE;
6626 /* Strip this section if we don't need it; see the
6627 comment below. */
6628 }
6629 else if (s == htab->elf.iplt
6630 || s == htab->glink
6631 || s == htab->glink_eh_frame
6632 || s == htab->elf.sgotplt
6633 || s == htab->sbss
6634 || s == htab->elf.sdynbss
6635 || s == htab->elf.sdynrelro
6636 || s == htab->dynsbss)
6637 {
6638 /* Strip these too. */
6639 }
6640 else if (s == htab->sdata[0].section
6641 || s == htab->sdata[1].section)
6642 {
6643 strip_section = (s->flags & SEC_KEEP) == 0;
6644 }
6645 else if (CONST_STRNEQ (bfd_get_section_name (htab->elf.dynobj, s),
6646 ".rela"))
6647 {
6648 if (s->size != 0)
6649 {
6650 /* Remember whether there are any relocation sections. */
6651 relocs = TRUE;
6652
6653 /* We use the reloc_count field as a counter if we need
6654 to copy relocs into the output file. */
6655 s->reloc_count = 0;
6656 }
6657 }
6658 else
6659 {
6660 /* It's not one of our sections, so don't allocate space. */
6661 continue;
6662 }
6663
6664 if (s->size == 0 && strip_section)
6665 {
6666 /* If we don't need this section, strip it from the
6667 output file. This is mostly to handle .rela.bss and
6668 .rela.plt. We must create both sections in
6669 create_dynamic_sections, because they must be created
6670 before the linker maps input sections to output
6671 sections. The linker does that before
6672 adjust_dynamic_symbol is called, and it is that
6673 function which decides whether anything needs to go
6674 into these sections. */
6675 s->flags |= SEC_EXCLUDE;
6676 continue;
6677 }
6678
6679 if ((s->flags & SEC_HAS_CONTENTS) == 0)
6680 continue;
6681
6682 /* Allocate memory for the section contents. */
6683 s->contents = bfd_zalloc (htab->elf.dynobj, s->size);
6684 if (s->contents == NULL)
6685 return FALSE;
6686 }
6687
6688 if (htab->elf.dynamic_sections_created)
6689 {
6690 /* Add some entries to the .dynamic section. We fill in the
6691 values later, in ppc_elf_finish_dynamic_sections, but we
6692 must add the entries now so that we get the correct size for
6693 the .dynamic section. The DT_DEBUG entry is filled in by the
6694 dynamic linker and used by the debugger. */
6695#define add_dynamic_entry(TAG, VAL) \
6696 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
6697
6698 if (bfd_link_executable (info))
6699 {
6700 if (!add_dynamic_entry (DT_DEBUG, 0))
6701 return FALSE;
6702 }
6703
6704 if (htab->elf.splt != NULL && htab->elf.splt->size != 0)
6705 {
6706 if (!add_dynamic_entry (DT_PLTGOT, 0)
6707 || !add_dynamic_entry (DT_PLTRELSZ, 0)
6708 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
6709 || !add_dynamic_entry (DT_JMPREL, 0))
6710 return FALSE;
6711 }
6712
6713 if (htab->plt_type == PLT_NEW
6714 && htab->glink != NULL
6715 && htab->glink->size != 0)
6716 {
6717 if (!add_dynamic_entry (DT_PPC_GOT, 0))
6718 return FALSE;
6719 if (!htab->params->no_tls_get_addr_opt
6720 && htab->tls_get_addr != NULL
6721 && htab->tls_get_addr->plt.plist != NULL
6722 && !add_dynamic_entry (DT_PPC_OPT, PPC_OPT_TLS))
6723 return FALSE;
6724 }
6725
6726 if (relocs)
6727 {
6728 if (!add_dynamic_entry (DT_RELA, 0)
6729 || !add_dynamic_entry (DT_RELASZ, 0)
6730 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
6731 return FALSE;
6732 }
6733
6734 /* If any dynamic relocs apply to a read-only section, then we
6735 need a DT_TEXTREL entry. */
6736 if ((info->flags & DF_TEXTREL) == 0)
6737 elf_link_hash_traverse (elf_hash_table (info), maybe_set_textrel,
6738 info);
6739
6740 if ((info->flags & DF_TEXTREL) != 0)
6741 {
6742 if (!add_dynamic_entry (DT_TEXTREL, 0))
6743 return FALSE;
6744 }
6745 if (htab->is_vxworks
6746 && !elf_vxworks_add_dynamic_entries (output_bfd, info))
6747 return FALSE;
6748 }
6749#undef add_dynamic_entry
6750
6751 if (htab->glink_eh_frame != NULL
6752 && htab->glink_eh_frame->contents != NULL)
6753 {
6754 unsigned char *p = htab->glink_eh_frame->contents;
6755 bfd_vma val;
6756
6757 memcpy (p, glink_eh_frame_cie, sizeof (glink_eh_frame_cie));
6758 /* CIE length (rewrite in case little-endian). */
6759 bfd_put_32 (htab->elf.dynobj, sizeof (glink_eh_frame_cie) - 4, p);
6760 p += sizeof (glink_eh_frame_cie);
6761 /* FDE length. */
6762 val = htab->glink_eh_frame->size - 4 - sizeof (glink_eh_frame_cie);
6763 bfd_put_32 (htab->elf.dynobj, val, p);
6764 p += 4;
6765 /* CIE pointer. */
6766 val = p - htab->glink_eh_frame->contents;
6767 bfd_put_32 (htab->elf.dynobj, val, p);
6768 p += 4;
6769 /* Offset to .glink. Set later. */
6770 p += 4;
6771 /* .glink size. */
6772 bfd_put_32 (htab->elf.dynobj, htab->glink->size, p);
6773 p += 4;
6774 /* Augmentation. */
6775 p += 1;
6776
6777 if (bfd_link_pic (info)
6778 && htab->elf.dynamic_sections_created)
6779 {
6780 bfd_vma adv = (htab->glink->size - GLINK_PLTRESOLVE + 8) >> 2;
6781 if (adv < 64)
6782 *p++ = DW_CFA_advance_loc + adv;
6783 else if (adv < 256)
6784 {
6785 *p++ = DW_CFA_advance_loc1;
6786 *p++ = adv;
6787 }
6788 else if (adv < 65536)
6789 {
6790 *p++ = DW_CFA_advance_loc2;
6791 bfd_put_16 (htab->elf.dynobj, adv, p);
6792 p += 2;
6793 }
6794 else
6795 {
6796 *p++ = DW_CFA_advance_loc4;
6797 bfd_put_32 (htab->elf.dynobj, adv, p);
6798 p += 4;
6799 }
6800 *p++ = DW_CFA_register;
6801 *p++ = 65;
6802 p++;
6803 *p++ = DW_CFA_advance_loc + 4;
6804 *p++ = DW_CFA_restore_extended;
6805 *p++ = 65;
6806 }
6807 BFD_ASSERT ((bfd_vma) ((p + 3 - htab->glink_eh_frame->contents) & -4)
6808 == htab->glink_eh_frame->size);
6809 }
6810
6811 return TRUE;
6812}
6813
6814/* Arrange to have _SDA_BASE_ or _SDA2_BASE_ stripped from the output
6815 if it looks like nothing is using them. */
6816
6817static void
6818maybe_strip_sdasym (bfd *output_bfd, elf_linker_section_t *lsect)
6819{
6820 struct elf_link_hash_entry *sda = lsect->sym;
6821
6822 if (sda != NULL && !sda->ref_regular && sda->dynindx == -1)
6823 {
6824 asection *s;
6825
6826 s = bfd_get_section_by_name (output_bfd, lsect->name);
6827 if (s == NULL || bfd_section_removed_from_list (output_bfd, s))
6828 {
6829 s = bfd_get_section_by_name (output_bfd, lsect->bss_name);
6830 if (s == NULL || bfd_section_removed_from_list (output_bfd, s))
6831 {
6832 sda->def_regular = 0;
6833 /* This is somewhat magic. See elf_link_output_extsym. */
6834 sda->ref_dynamic = 1;
6835 sda->forced_local = 0;
6836 }
6837 }
6838 }
6839}
6840
6841void
6842ppc_elf_maybe_strip_sdata_syms (struct bfd_link_info *info)
6843{
6844 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
6845
6846 if (htab != NULL)
6847 {
6848 maybe_strip_sdasym (info->output_bfd, &htab->sdata[0]);
6849 maybe_strip_sdasym (info->output_bfd, &htab->sdata[1]);
6850 }
6851}
6852
6853
6854/* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
6855
6856static bfd_boolean
6857ppc_elf_hash_symbol (struct elf_link_hash_entry *h)
6858{
6859 if (h->plt.plist != NULL
6860 && !h->def_regular
6861 && (!h->pointer_equality_needed
6862 || !h->ref_regular_nonweak))
6863 return FALSE;
6864
6865 return _bfd_elf_hash_symbol (h);
6866}
6867\f
6868#define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0]))
6869
6870/* Relaxation trampolines. r12 is available for clobbering (r11, is
6871 used for some functions that are allowed to break the ABI). */
6872static const int shared_stub_entry[] =
6873 {
6874 0x7c0802a6, /* mflr 0 */
6875 0x429f0005, /* bcl 20, 31, .Lxxx */
6876 0x7d8802a6, /* mflr 12 */
6877 0x3d8c0000, /* addis 12, 12, (xxx-.Lxxx)@ha */
6878 0x398c0000, /* addi 12, 12, (xxx-.Lxxx)@l */
6879 0x7c0803a6, /* mtlr 0 */
6880 0x7d8903a6, /* mtctr 12 */
6881 0x4e800420, /* bctr */
6882 };
6883
6884static const int stub_entry[] =
6885 {
6886 0x3d800000, /* lis 12,xxx@ha */
6887 0x398c0000, /* addi 12,12,xxx@l */
6888 0x7d8903a6, /* mtctr 12 */
6889 0x4e800420, /* bctr */
6890 };
6891
6892struct ppc_elf_relax_info
6893{
6894 unsigned int workaround_size;
6895 unsigned int picfixup_size;
6896};
6897
6898/* This function implements long branch trampolines, and the ppc476
6899 icache bug workaround. Any section needing trampolines or patch
6900 space for the workaround has its size extended so that we can
6901 add trampolines at the end of the section. */
6902
6903static bfd_boolean
6904ppc_elf_relax_section (bfd *abfd,
6905 asection *isec,
6906 struct bfd_link_info *link_info,
6907 bfd_boolean *again)
6908{
6909 struct one_branch_fixup
6910 {
6911 struct one_branch_fixup *next;
6912 asection *tsec;
6913 /* Final link, can use the symbol offset. For a
6914 relocatable link we use the symbol's index. */
6915 bfd_vma toff;
6916 bfd_vma trampoff;
6917 };
6918
6919 Elf_Internal_Shdr *symtab_hdr;
6920 bfd_byte *contents = NULL;
6921 Elf_Internal_Sym *isymbuf = NULL;
6922 Elf_Internal_Rela *internal_relocs = NULL;
6923 Elf_Internal_Rela *irel, *irelend = NULL;
6924 struct one_branch_fixup *branch_fixups = NULL;
6925 struct ppc_elf_relax_info *relax_info = NULL;
6926 unsigned changes = 0;
6927 bfd_boolean workaround_change;
6928 struct ppc_elf_link_hash_table *htab;
6929 bfd_size_type trampbase, trampoff, newsize, picfixup_size;
6930 asection *got2;
6931 bfd_boolean maybe_pasted;
6932
6933 *again = FALSE;
6934
6935 /* No need to do anything with non-alloc or non-code sections. */
6936 if ((isec->flags & SEC_ALLOC) == 0
6937 || (isec->flags & SEC_CODE) == 0
6938 || (isec->flags & SEC_LINKER_CREATED) != 0
6939 || isec->size < 4)
6940 return TRUE;
6941
6942 /* We cannot represent the required PIC relocs in the output, so don't
6943 do anything. The linker doesn't support mixing -shared and -r
6944 anyway. */
6945 if (bfd_link_relocatable (link_info) && bfd_link_pic (link_info))
6946 return TRUE;
6947
6948 htab = ppc_elf_hash_table (link_info);
6949 if (htab == NULL)
6950 return TRUE;
6951
6952 isec->size = (isec->size + 3) & -4;
6953 if (isec->rawsize == 0)
6954 isec->rawsize = isec->size;
6955 trampbase = isec->size;
6956
6957 BFD_ASSERT (isec->sec_info_type == SEC_INFO_TYPE_NONE
6958 || isec->sec_info_type == SEC_INFO_TYPE_TARGET);
6959 isec->sec_info_type = SEC_INFO_TYPE_TARGET;
6960
6961 if (htab->params->ppc476_workaround
6962 || htab->params->pic_fixup > 0)
6963 {
6964 if (elf_section_data (isec)->sec_info == NULL)
6965 {
6966 elf_section_data (isec)->sec_info
6967 = bfd_zalloc (abfd, sizeof (struct ppc_elf_relax_info));
6968 if (elf_section_data (isec)->sec_info == NULL)
6969 return FALSE;
6970 }
6971 relax_info = elf_section_data (isec)->sec_info;
6972 trampbase -= relax_info->workaround_size;
6973 }
6974
6975 maybe_pasted = (strcmp (isec->output_section->name, ".init") == 0
6976 || strcmp (isec->output_section->name, ".fini") == 0);
6977 /* Space for a branch around any trampolines. */
6978 trampoff = trampbase;
6979 if (maybe_pasted && trampbase == isec->rawsize)
6980 trampoff += 4;
6981
6982 symtab_hdr = &elf_symtab_hdr (abfd);
6983 picfixup_size = 0;
6984 if (htab->params->branch_trampolines
6985 || htab->params->pic_fixup > 0)
6986 {
6987 /* Get a copy of the native relocations. */
6988 if (isec->reloc_count != 0)
6989 {
6990 internal_relocs = _bfd_elf_link_read_relocs (abfd, isec, NULL, NULL,
6991 link_info->keep_memory);
6992 if (internal_relocs == NULL)
6993 goto error_return;
6994 }
6995
6996 got2 = bfd_get_section_by_name (abfd, ".got2");
6997
6998 irelend = internal_relocs + isec->reloc_count;
6999 for (irel = internal_relocs; irel < irelend; irel++)
7000 {
7001 unsigned long r_type = ELF32_R_TYPE (irel->r_info);
7002 bfd_vma toff, roff;
7003 asection *tsec;
7004 struct one_branch_fixup *f;
7005 size_t insn_offset = 0;
7006 bfd_vma max_branch_offset = 0, val;
7007 bfd_byte *hit_addr;
7008 unsigned long t0;
7009 struct elf_link_hash_entry *h;
7010 struct plt_entry **plist;
7011 unsigned char sym_type;
7012
7013 switch (r_type)
7014 {
7015 case R_PPC_REL24:
7016 case R_PPC_LOCAL24PC:
7017 case R_PPC_PLTREL24:
7018 max_branch_offset = 1 << 25;
7019 break;
7020
7021 case R_PPC_REL14:
7022 case R_PPC_REL14_BRTAKEN:
7023 case R_PPC_REL14_BRNTAKEN:
7024 max_branch_offset = 1 << 15;
7025 break;
7026
7027 case R_PPC_ADDR16_HA:
7028 if (htab->params->pic_fixup > 0)
7029 break;
7030 continue;
7031
7032 default:
7033 continue;
7034 }
7035
7036 /* Get the value of the symbol referred to by the reloc. */
7037 h = NULL;
7038 if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
7039 {
7040 /* A local symbol. */
7041 Elf_Internal_Sym *isym;
7042
7043 /* Read this BFD's local symbols. */
7044 if (isymbuf == NULL)
7045 {
7046 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
7047 if (isymbuf == NULL)
7048 isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
7049 symtab_hdr->sh_info, 0,
7050 NULL, NULL, NULL);
7051 if (isymbuf == 0)
7052 goto error_return;
7053 }
7054 isym = isymbuf + ELF32_R_SYM (irel->r_info);
7055 if (isym->st_shndx == SHN_UNDEF)
7056 tsec = bfd_und_section_ptr;
7057 else if (isym->st_shndx == SHN_ABS)
7058 tsec = bfd_abs_section_ptr;
7059 else if (isym->st_shndx == SHN_COMMON)
7060 tsec = bfd_com_section_ptr;
7061 else
7062 tsec = bfd_section_from_elf_index (abfd, isym->st_shndx);
7063
7064 toff = isym->st_value;
7065 sym_type = ELF_ST_TYPE (isym->st_info);
7066 }
7067 else
7068 {
7069 /* Global symbol handling. */
7070 unsigned long indx;
7071
7072 indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
7073 h = elf_sym_hashes (abfd)[indx];
7074
7075 while (h->root.type == bfd_link_hash_indirect
7076 || h->root.type == bfd_link_hash_warning)
7077 h = (struct elf_link_hash_entry *) h->root.u.i.link;
7078
7079 if (h->root.type == bfd_link_hash_defined
7080 || h->root.type == bfd_link_hash_defweak)
7081 {
7082 tsec = h->root.u.def.section;
7083 toff = h->root.u.def.value;
7084 }
7085 else if (h->root.type == bfd_link_hash_undefined
7086 || h->root.type == bfd_link_hash_undefweak)
7087 {
7088 tsec = bfd_und_section_ptr;
7089 toff = bfd_link_relocatable (link_info) ? indx : 0;
7090 }
7091 else
7092 continue;
7093
7094 /* If this branch is to __tls_get_addr then we may later
7095 optimise away the call. We won't be needing a long-
7096 branch stub in that case. */
7097 if (bfd_link_executable (link_info)
7098 && h == htab->tls_get_addr
7099 && irel != internal_relocs)
7100 {
7101 unsigned long t_symndx = ELF32_R_SYM (irel[-1].r_info);
7102 unsigned long t_rtype = ELF32_R_TYPE (irel[-1].r_info);
7103 unsigned int tls_mask = 0;
7104
7105 /* The previous reloc should be one of R_PPC_TLSGD or
7106 R_PPC_TLSLD, or for older object files, a reloc
7107 on the __tls_get_addr arg setup insn. Get tls
7108 mask bits from the symbol on that reloc. */
7109 if (t_symndx < symtab_hdr->sh_info)
7110 {
7111 bfd_vma *local_got_offsets = elf_local_got_offsets (abfd);
7112
7113 if (local_got_offsets != NULL)
7114 {
7115 struct plt_entry **local_plt = (struct plt_entry **)
7116 (local_got_offsets + symtab_hdr->sh_info);
7117 char *lgot_masks = (char *)
7118 (local_plt + symtab_hdr->sh_info);
7119 tls_mask = lgot_masks[t_symndx];
7120 }
7121 }
7122 else
7123 {
7124 struct elf_link_hash_entry *th
7125 = elf_sym_hashes (abfd)[t_symndx - symtab_hdr->sh_info];
7126
7127 while (th->root.type == bfd_link_hash_indirect
7128 || th->root.type == bfd_link_hash_warning)
7129 th = (struct elf_link_hash_entry *) th->root.u.i.link;
7130
7131 tls_mask
7132 = ((struct ppc_elf_link_hash_entry *) th)->tls_mask;
7133 }
7134
7135 /* The mask bits tell us if the call will be
7136 optimised away. */
7137 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0
7138 && (t_rtype == R_PPC_TLSGD
7139 || t_rtype == R_PPC_GOT_TLSGD16
7140 || t_rtype == R_PPC_GOT_TLSGD16_LO))
7141 continue;
7142 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0
7143 && (t_rtype == R_PPC_TLSLD
7144 || t_rtype == R_PPC_GOT_TLSLD16
7145 || t_rtype == R_PPC_GOT_TLSLD16_LO))
7146 continue;
7147 }
7148
7149 sym_type = h->type;
7150 }
7151
7152 if (r_type == R_PPC_ADDR16_HA)
7153 {
7154 if (h != NULL
7155 && !h->def_regular
7156 && h->protected_def
7157 && ppc_elf_hash_entry (h)->has_addr16_ha
7158 && ppc_elf_hash_entry (h)->has_addr16_lo)
7159 picfixup_size += 12;
7160 continue;
7161 }
7162
7163 /* The condition here under which we call find_plt_ent must
7164 match that in relocate_section. If we call find_plt_ent here
7165 but not in relocate_section, or vice versa, then the branch
7166 destination used here may be incorrect. */
7167 plist = NULL;
7168 if (h != NULL)
7169 {
7170 /* We know is_branch_reloc (r_type) is true. */
7171 if (h->type == STT_GNU_IFUNC
7172 || r_type == R_PPC_PLTREL24)
7173 plist = &h->plt.plist;
7174 }
7175 else if (sym_type == STT_GNU_IFUNC
7176 && elf_local_got_offsets (abfd) != NULL)
7177 {
7178 bfd_vma *local_got_offsets = elf_local_got_offsets (abfd);
7179 struct plt_entry **local_plt = (struct plt_entry **)
7180 (local_got_offsets + symtab_hdr->sh_info);
7181 plist = local_plt + ELF32_R_SYM (irel->r_info);
7182 }
7183 if (plist != NULL)
7184 {
7185 bfd_vma addend = 0;
7186 struct plt_entry *ent;
7187
7188 if (r_type == R_PPC_PLTREL24 && bfd_link_pic (link_info))
7189 addend = irel->r_addend;
7190 ent = find_plt_ent (plist, got2, addend);
7191 if (ent != NULL)
7192 {
7193 if (htab->plt_type == PLT_NEW
7194 || h == NULL
7195 || !htab->elf.dynamic_sections_created
7196 || h->dynindx == -1)
7197 {
7198 tsec = htab->glink;
7199 toff = ent->glink_offset;
7200 }
7201 else
7202 {
7203 tsec = htab->elf.splt;
7204 toff = ent->plt.offset;
7205 }
7206 }
7207 }
7208
7209 /* If the branch and target are in the same section, you have
7210 no hope of adding stubs. We'll error out later should the
7211 branch overflow. */
7212 if (tsec == isec)
7213 continue;
7214
7215 /* There probably isn't any reason to handle symbols in
7216 SEC_MERGE sections; SEC_MERGE doesn't seem a likely
7217 attribute for a code section, and we are only looking at
7218 branches. However, implement it correctly here as a
7219 reference for other target relax_section functions. */
7220 if (0 && tsec->sec_info_type == SEC_INFO_TYPE_MERGE)
7221 {
7222 /* At this stage in linking, no SEC_MERGE symbol has been
7223 adjusted, so all references to such symbols need to be
7224 passed through _bfd_merged_section_offset. (Later, in
7225 relocate_section, all SEC_MERGE symbols *except* for
7226 section symbols have been adjusted.)
7227
7228 gas may reduce relocations against symbols in SEC_MERGE
7229 sections to a relocation against the section symbol when
7230 the original addend was zero. When the reloc is against
7231 a section symbol we should include the addend in the
7232 offset passed to _bfd_merged_section_offset, since the
7233 location of interest is the original symbol. On the
7234 other hand, an access to "sym+addend" where "sym" is not
7235 a section symbol should not include the addend; Such an
7236 access is presumed to be an offset from "sym"; The
7237 location of interest is just "sym". */
7238 if (sym_type == STT_SECTION)
7239 toff += irel->r_addend;
7240
7241 toff
7242 = _bfd_merged_section_offset (abfd, &tsec,
7243 elf_section_data (tsec)->sec_info,
7244 toff);
7245
7246 if (sym_type != STT_SECTION)
7247 toff += irel->r_addend;
7248 }
7249 /* PLTREL24 addends are special. */
7250 else if (r_type != R_PPC_PLTREL24)
7251 toff += irel->r_addend;
7252
7253 /* Attempted -shared link of non-pic code loses. */
7254 if ((!bfd_link_relocatable (link_info)
7255 && tsec == bfd_und_section_ptr)
7256 || tsec->output_section == NULL
7257 || (tsec->owner != NULL
7258 && (tsec->owner->flags & BFD_PLUGIN) != 0))
7259 continue;
7260
7261 roff = irel->r_offset;
7262
7263 /* If the branch is in range, no need to do anything. */
7264 if (tsec != bfd_und_section_ptr
7265 && (!bfd_link_relocatable (link_info)
7266 /* A relocatable link may have sections moved during
7267 final link, so do not presume they remain in range. */
7268 || tsec->output_section == isec->output_section))
7269 {
7270 bfd_vma symaddr, reladdr;
7271
7272 symaddr = tsec->output_section->vma + tsec->output_offset + toff;
7273 reladdr = isec->output_section->vma + isec->output_offset + roff;
7274 if (symaddr - reladdr + max_branch_offset
7275 < 2 * max_branch_offset)
7276 continue;
7277 }
7278
7279 /* Look for an existing fixup to this address. */
7280 for (f = branch_fixups; f ; f = f->next)
7281 if (f->tsec == tsec && f->toff == toff)
7282 break;
7283
7284 if (f == NULL)
7285 {
7286 size_t size;
7287 unsigned long stub_rtype;
7288
7289 val = trampoff - roff;
7290 if (val >= max_branch_offset)
7291 /* Oh dear, we can't reach a trampoline. Don't try to add
7292 one. We'll report an error later. */
7293 continue;
7294
7295 if (bfd_link_pic (link_info))
7296 {
7297 size = 4 * ARRAY_SIZE (shared_stub_entry);
7298 insn_offset = 12;
7299 }
7300 else
7301 {
7302 size = 4 * ARRAY_SIZE (stub_entry);
7303 insn_offset = 0;
7304 }
7305 stub_rtype = R_PPC_RELAX;
7306 if (tsec == htab->elf.splt
7307 || tsec == htab->glink)
7308 {
7309 stub_rtype = R_PPC_RELAX_PLT;
7310 if (r_type == R_PPC_PLTREL24)
7311 stub_rtype = R_PPC_RELAX_PLTREL24;
7312 }
7313
7314 /* Hijack the old relocation. Since we need two
7315 relocations for this use a "composite" reloc. */
7316 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
7317 stub_rtype);
7318 irel->r_offset = trampoff + insn_offset;
7319 if (r_type == R_PPC_PLTREL24
7320 && stub_rtype != R_PPC_RELAX_PLTREL24)
7321 irel->r_addend = 0;
7322
7323 /* Record the fixup so we don't do it again this section. */
7324 f = bfd_malloc (sizeof (*f));
7325 f->next = branch_fixups;
7326 f->tsec = tsec;
7327 f->toff = toff;
7328 f->trampoff = trampoff;
7329 branch_fixups = f;
7330
7331 trampoff += size;
7332 changes++;
7333 }
7334 else
7335 {
7336 val = f->trampoff - roff;
7337 if (val >= max_branch_offset)
7338 continue;
7339
7340 /* Nop out the reloc, since we're finalizing things here. */
7341 irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
7342 }
7343
7344 /* Get the section contents. */
7345 if (contents == NULL)
7346 {
7347 /* Get cached copy if it exists. */
7348 if (elf_section_data (isec)->this_hdr.contents != NULL)
7349 contents = elf_section_data (isec)->this_hdr.contents;
7350 /* Go get them off disk. */
7351 else if (!bfd_malloc_and_get_section (abfd, isec, &contents))
7352 goto error_return;
7353 }
7354
7355 /* Fix up the existing branch to hit the trampoline. */
7356 hit_addr = contents + roff;
7357 switch (r_type)
7358 {
7359 case R_PPC_REL24:
7360 case R_PPC_LOCAL24PC:
7361 case R_PPC_PLTREL24:
7362 t0 = bfd_get_32 (abfd, hit_addr);
7363 t0 &= ~0x3fffffc;
7364 t0 |= val & 0x3fffffc;
7365 bfd_put_32 (abfd, t0, hit_addr);
7366 break;
7367
7368 case R_PPC_REL14:
7369 case R_PPC_REL14_BRTAKEN:
7370 case R_PPC_REL14_BRNTAKEN:
7371 t0 = bfd_get_32 (abfd, hit_addr);
7372 t0 &= ~0xfffc;
7373 t0 |= val & 0xfffc;
7374 bfd_put_32 (abfd, t0, hit_addr);
7375 break;
7376 }
7377 }
7378
7379 while (branch_fixups != NULL)
7380 {
7381 struct one_branch_fixup *f = branch_fixups;
7382 branch_fixups = branch_fixups->next;
7383 free (f);
7384 }
7385 }
7386
7387 workaround_change = FALSE;
7388 newsize = trampoff;
7389 if (htab->params->ppc476_workaround
7390 && (!bfd_link_relocatable (link_info)
7391 || isec->output_section->alignment_power >= htab->params->pagesize_p2))
7392 {
7393 bfd_vma addr, end_addr;
7394 unsigned int crossings;
7395 bfd_vma pagesize = (bfd_vma) 1 << htab->params->pagesize_p2;
7396
7397 addr = isec->output_section->vma + isec->output_offset;
7398 end_addr = addr + trampoff;
7399 addr &= -pagesize;
7400 crossings = ((end_addr & -pagesize) - addr) >> htab->params->pagesize_p2;
7401 if (crossings != 0)
7402 {
7403 /* Keep space aligned, to ensure the patch code itself does
7404 not cross a page. Don't decrease size calculated on a
7405 previous pass as otherwise we might never settle on a layout. */
7406 newsize = 15 - ((end_addr - 1) & 15);
7407 newsize += crossings * 16;
7408 if (relax_info->workaround_size < newsize)
7409 {
7410 relax_info->workaround_size = newsize;
7411 workaround_change = TRUE;
7412 }
7413 /* Ensure relocate_section is called. */
7414 isec->flags |= SEC_RELOC;
7415 }
7416 newsize = trampoff + relax_info->workaround_size;
7417 }
7418
7419 if (htab->params->pic_fixup > 0)
7420 {
7421 picfixup_size -= relax_info->picfixup_size;
7422 if (picfixup_size != 0)
7423 relax_info->picfixup_size += picfixup_size;
7424 newsize += relax_info->picfixup_size;
7425 }
7426
7427 if (changes != 0 || picfixup_size != 0 || workaround_change)
7428 isec->size = newsize;
7429
7430 if (isymbuf != NULL
7431 && symtab_hdr->contents != (unsigned char *) isymbuf)
7432 {
7433 if (! link_info->keep_memory)
7434 free (isymbuf);
7435 else
7436 {
7437 /* Cache the symbols for elf_link_input_bfd. */
7438 symtab_hdr->contents = (unsigned char *) isymbuf;
7439 }
7440 }
7441
7442 if (contents != NULL
7443 && elf_section_data (isec)->this_hdr.contents != contents)
7444 {
7445 if (!changes && !link_info->keep_memory)
7446 free (contents);
7447 else
7448 {
7449 /* Cache the section contents for elf_link_input_bfd. */
7450 elf_section_data (isec)->this_hdr.contents = contents;
7451 }
7452 }
7453
7454 changes += picfixup_size;
7455 if (changes != 0)
7456 {
7457 /* Append sufficient NOP relocs so we can write out relocation
7458 information for the trampolines. */
7459 Elf_Internal_Shdr *rel_hdr;
7460 Elf_Internal_Rela *new_relocs = bfd_malloc ((changes + isec->reloc_count)
7461 * sizeof (*new_relocs));
7462 unsigned ix;
7463
7464 if (!new_relocs)
7465 goto error_return;
7466 memcpy (new_relocs, internal_relocs,
7467 isec->reloc_count * sizeof (*new_relocs));
7468 for (ix = changes; ix--;)
7469 {
7470 irel = new_relocs + ix + isec->reloc_count;
7471
7472 irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
7473 }
7474 if (internal_relocs != elf_section_data (isec)->relocs)
7475 free (internal_relocs);
7476 elf_section_data (isec)->relocs = new_relocs;
7477 isec->reloc_count += changes;
7478 rel_hdr = _bfd_elf_single_rel_hdr (isec);
7479 rel_hdr->sh_size += changes * rel_hdr->sh_entsize;
7480 }
7481 else if (internal_relocs != NULL
7482 && elf_section_data (isec)->relocs != internal_relocs)
7483 free (internal_relocs);
7484
7485 *again = changes != 0 || workaround_change;
7486 return TRUE;
7487
7488 error_return:
7489 while (branch_fixups != NULL)
7490 {
7491 struct one_branch_fixup *f = branch_fixups;
7492 branch_fixups = branch_fixups->next;
7493 free (f);
7494 }
7495 if (isymbuf != NULL && (unsigned char *) isymbuf != symtab_hdr->contents)
7496 free (isymbuf);
7497 if (contents != NULL
7498 && elf_section_data (isec)->this_hdr.contents != contents)
7499 free (contents);
7500 if (internal_relocs != NULL
7501 && elf_section_data (isec)->relocs != internal_relocs)
7502 free (internal_relocs);
7503 return FALSE;
7504}
7505\f
7506/* What to do when ld finds relocations against symbols defined in
7507 discarded sections. */
7508
7509static unsigned int
7510ppc_elf_action_discarded (asection *sec)
7511{
7512 if (strcmp (".fixup", sec->name) == 0)
7513 return 0;
7514
7515 if (strcmp (".got2", sec->name) == 0)
7516 return 0;
7517
7518 return _bfd_elf_default_action_discarded (sec);
7519}
7520\f
7521/* Fill in the address for a pointer generated in a linker section. */
7522
7523static bfd_vma
7524elf_finish_pointer_linker_section (bfd *input_bfd,
7525 elf_linker_section_t *lsect,
7526 struct elf_link_hash_entry *h,
7527 bfd_vma relocation,
7528 const Elf_Internal_Rela *rel)
7529{
7530 elf_linker_section_pointers_t *linker_section_ptr;
7531
7532 BFD_ASSERT (lsect != NULL);
7533
7534 if (h != NULL)
7535 {
7536 /* Handle global symbol. */
7537 struct ppc_elf_link_hash_entry *eh;
7538
7539 eh = (struct ppc_elf_link_hash_entry *) h;
7540 BFD_ASSERT (eh->elf.def_regular);
7541 linker_section_ptr = eh->linker_section_pointer;
7542 }
7543 else
7544 {
7545 /* Handle local symbol. */
7546 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
7547
7548 BFD_ASSERT (is_ppc_elf (input_bfd));
7549 BFD_ASSERT (elf_local_ptr_offsets (input_bfd) != NULL);
7550 linker_section_ptr = elf_local_ptr_offsets (input_bfd)[r_symndx];
7551 }
7552
7553 linker_section_ptr = elf_find_pointer_linker_section (linker_section_ptr,
7554 rel->r_addend,
7555 lsect);
7556 BFD_ASSERT (linker_section_ptr != NULL);
7557
7558 /* Offset will always be a multiple of four, so use the bottom bit
7559 as a "written" flag. */
7560 if ((linker_section_ptr->offset & 1) == 0)
7561 {
7562 bfd_put_32 (lsect->section->owner,
7563 relocation + linker_section_ptr->addend,
7564 lsect->section->contents + linker_section_ptr->offset);
7565 linker_section_ptr->offset += 1;
7566 }
7567
7568 relocation = (lsect->section->output_section->vma
7569 + lsect->section->output_offset
7570 + linker_section_ptr->offset - 1
7571 - SYM_VAL (lsect->sym));
7572
7573#ifdef DEBUG
7574 fprintf (stderr,
7575 "Finish pointer in linker section %s, offset = %ld (0x%lx)\n",
7576 lsect->name, (long) relocation, (long) relocation);
7577#endif
7578
7579 return relocation;
7580}
7581
7582#define PPC_LO(v) ((v) & 0xffff)
7583#define PPC_HI(v) (((v) >> 16) & 0xffff)
7584#define PPC_HA(v) PPC_HI ((v) + 0x8000)
7585
7586static void
7587write_glink_stub (struct plt_entry *ent, asection *plt_sec, unsigned char *p,
7588 struct bfd_link_info *info)
7589{
7590 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
7591 bfd *output_bfd = info->output_bfd;
7592 bfd_vma plt;
7593
7594 plt = ((ent->plt.offset & ~1)
7595 + plt_sec->output_section->vma
7596 + plt_sec->output_offset);
7597
7598 if (bfd_link_pic (info))
7599 {
7600 bfd_vma got = 0;
7601
7602 if (ent->addend >= 32768)
7603 got = (ent->addend
7604 + ent->sec->output_section->vma
7605 + ent->sec->output_offset);
7606 else if (htab->elf.hgot != NULL)
7607 got = SYM_VAL (htab->elf.hgot);
7608
7609 plt -= got;
7610
7611 if (plt + 0x8000 < 0x10000)
7612 {
7613 bfd_put_32 (output_bfd, LWZ_11_30 + PPC_LO (plt), p);
7614 p += 4;
7615 bfd_put_32 (output_bfd, MTCTR_11, p);
7616 p += 4;
7617 bfd_put_32 (output_bfd, BCTR, p);
7618 p += 4;
7619 bfd_put_32 (output_bfd, htab->params->ppc476_workaround ? BA : NOP, p);
7620 p += 4;
7621 }
7622 else
7623 {
7624 bfd_put_32 (output_bfd, ADDIS_11_30 + PPC_HA (plt), p);
7625 p += 4;
7626 bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
7627 p += 4;
7628 bfd_put_32 (output_bfd, MTCTR_11, p);
7629 p += 4;
7630 bfd_put_32 (output_bfd, BCTR, p);
7631 p += 4;
7632 }
7633 }
7634 else
7635 {
7636 bfd_put_32 (output_bfd, LIS_11 + PPC_HA (plt), p);
7637 p += 4;
7638 bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
7639 p += 4;
7640 bfd_put_32 (output_bfd, MTCTR_11, p);
7641 p += 4;
7642 bfd_put_32 (output_bfd, BCTR, p);
7643 p += 4;
7644 }
7645}
7646
7647/* Return true if symbol is defined statically. */
7648
7649static bfd_boolean
7650is_static_defined (struct elf_link_hash_entry *h)
7651{
7652 return ((h->root.type == bfd_link_hash_defined
7653 || h->root.type == bfd_link_hash_defweak)
7654 && h->root.u.def.section != NULL
7655 && h->root.u.def.section->output_section != NULL);
7656}
7657
7658/* If INSN is an opcode that may be used with an @tls operand, return
7659 the transformed insn for TLS optimisation, otherwise return 0. If
7660 REG is non-zero only match an insn with RB or RA equal to REG. */
7661
7662unsigned int
7663_bfd_elf_ppc_at_tls_transform (unsigned int insn, unsigned int reg)
7664{
7665 unsigned int rtra;
7666
7667 if ((insn & (0x3f << 26)) != 31 << 26)
7668 return 0;
7669
7670 if (reg == 0 || ((insn >> 11) & 0x1f) == reg)
7671 rtra = insn & ((1 << 26) - (1 << 16));
7672 else if (((insn >> 16) & 0x1f) == reg)
7673 rtra = (insn & (0x1f << 21)) | ((insn & (0x1f << 11)) << 5);
7674 else
7675 return 0;
7676
7677 if ((insn & (0x3ff << 1)) == 266 << 1)
7678 /* add -> addi. */
7679 insn = 14 << 26;
7680 else if ((insn & (0x1f << 1)) == 23 << 1
7681 && ((insn & (0x1f << 6)) < 14 << 6
7682 || ((insn & (0x1f << 6)) >= 16 << 6
7683 && (insn & (0x1f << 6)) < 24 << 6)))
7684 /* load and store indexed -> dform. */
7685 insn = (32 | ((insn >> 6) & 0x1f)) << 26;
7686 else if ((insn & (((0x1a << 5) | 0x1f) << 1)) == 21 << 1)
7687 /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
7688 insn = ((58 | ((insn >> 6) & 4)) << 26) | ((insn >> 6) & 1);
7689 else if ((insn & (((0x1f << 5) | 0x1f) << 1)) == 341 << 1)
7690 /* lwax -> lwa. */
7691 insn = (58 << 26) | 2;
7692 else
7693 return 0;
7694 insn |= rtra;
7695 return insn;
7696}
7697
7698/* If INSN is an opcode that may be used with an @tprel operand, return
7699 the transformed insn for an undefined weak symbol, ie. with the
7700 thread pointer REG operand removed. Otherwise return 0. */
7701
7702unsigned int
7703_bfd_elf_ppc_at_tprel_transform (unsigned int insn, unsigned int reg)
7704{
7705 if ((insn & (0x1f << 16)) == reg << 16
7706 && ((insn & (0x3f << 26)) == 14u << 26 /* addi */
7707 || (insn & (0x3f << 26)) == 15u << 26 /* addis */
7708 || (insn & (0x3f << 26)) == 32u << 26 /* lwz */
7709 || (insn & (0x3f << 26)) == 34u << 26 /* lbz */
7710 || (insn & (0x3f << 26)) == 36u << 26 /* stw */
7711 || (insn & (0x3f << 26)) == 38u << 26 /* stb */
7712 || (insn & (0x3f << 26)) == 40u << 26 /* lhz */
7713 || (insn & (0x3f << 26)) == 42u << 26 /* lha */
7714 || (insn & (0x3f << 26)) == 44u << 26 /* sth */
7715 || (insn & (0x3f << 26)) == 46u << 26 /* lmw */
7716 || (insn & (0x3f << 26)) == 47u << 26 /* stmw */
7717 || (insn & (0x3f << 26)) == 48u << 26 /* lfs */
7718 || (insn & (0x3f << 26)) == 50u << 26 /* lfd */
7719 || (insn & (0x3f << 26)) == 52u << 26 /* stfs */
7720 || (insn & (0x3f << 26)) == 54u << 26 /* stfd */
7721 || ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
7722 && (insn & 3) != 1)
7723 || ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */
7724 && ((insn & 3) == 0 || (insn & 3) == 3))))
7725 {
7726 insn &= ~(0x1f << 16);
7727 }
7728 else if ((insn & (0x1f << 21)) == reg << 21
7729 && ((insn & (0x3e << 26)) == 24u << 26 /* ori, oris */
7730 || (insn & (0x3e << 26)) == 26u << 26 /* xori,xoris */
7731 || (insn & (0x3e << 26)) == 28u << 26 /* andi,andis */))
7732 {
7733 insn &= ~(0x1f << 21);
7734 insn |= (insn & (0x1f << 16)) << 5;
7735 if ((insn & (0x3e << 26)) == 26 << 26 /* xori,xoris */)
7736 insn -= 2 >> 26; /* convert to ori,oris */
7737 }
7738 else
7739 insn = 0;
7740 return insn;
7741}
7742
7743static bfd_boolean
7744is_insn_ds_form (unsigned int insn)
7745{
7746 return ((insn & (0x3f << 26)) == 58u << 26 /* ld,ldu,lwa */
7747 || (insn & (0x3f << 26)) == 62u << 26 /* std,stdu,stq */
7748 || (insn & (0x3f << 26)) == 57u << 26 /* lfdp */
7749 || (insn & (0x3f << 26)) == 61u << 26 /* stfdp */);
7750}
7751
7752static bfd_boolean
7753is_insn_dq_form (unsigned int insn)
7754{
7755 return ((insn & (0x3f << 26)) == 56u << 26 /* lq */
7756 || ((insn & (0x3f << 26)) == (61u << 26) /* lxv, stxv */
7757 && (insn & 3) == 1));
7758}
7759
7760/* The RELOCATE_SECTION function is called by the ELF backend linker
7761 to handle the relocations for a section.
7762
7763 The relocs are always passed as Rela structures; if the section
7764 actually uses Rel structures, the r_addend field will always be
7765 zero.
7766
7767 This function is responsible for adjust the section contents as
7768 necessary, and (if using Rela relocs and generating a
7769 relocatable output file) adjusting the reloc addend as
7770 necessary.
7771
7772 This function does not have to worry about setting the reloc
7773 address or the reloc symbol index.
7774
7775 LOCAL_SYMS is a pointer to the swapped in local symbols.
7776
7777 LOCAL_SECTIONS is an array giving the section in the input file
7778 corresponding to the st_shndx field of each local symbol.
7779
7780 The global hash table entry for the global symbols can be found
7781 via elf_sym_hashes (input_bfd).
7782
7783 When generating relocatable output, this function must handle
7784 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
7785 going to be the section symbol corresponding to the output
7786 section, which means that the addend must be adjusted
7787 accordingly. */
7788
7789static bfd_boolean
7790ppc_elf_relocate_section (bfd *output_bfd,
7791 struct bfd_link_info *info,
7792 bfd *input_bfd,
7793 asection *input_section,
7794 bfd_byte *contents,
7795 Elf_Internal_Rela *relocs,
7796 Elf_Internal_Sym *local_syms,
7797 asection **local_sections)
7798{
7799 Elf_Internal_Shdr *symtab_hdr;
7800 struct elf_link_hash_entry **sym_hashes;
7801 struct ppc_elf_link_hash_table *htab;
7802 Elf_Internal_Rela *rel;
7803 Elf_Internal_Rela *wrel;
7804 Elf_Internal_Rela *relend;
7805 Elf_Internal_Rela outrel;
7806 asection *got2;
7807 bfd_vma *local_got_offsets;
7808 bfd_boolean ret = TRUE;
7809 bfd_vma d_offset = (bfd_big_endian (input_bfd) ? 2 : 0);
7810 bfd_boolean is_vxworks_tls;
7811 unsigned int picfixup_size = 0;
7812 struct ppc_elf_relax_info *relax_info = NULL;
7813
7814#ifdef DEBUG
7815 _bfd_error_handler ("ppc_elf_relocate_section called for %B section %A, "
7816 "%ld relocations%s",
7817 input_bfd, input_section,
7818 (long) input_section->reloc_count,
7819 (bfd_link_relocatable (info)) ? " (relocatable)" : "");
7820#endif
7821
7822 got2 = bfd_get_section_by_name (input_bfd, ".got2");
7823
7824 /* Initialize howto table if not already done. */
7825 if (!ppc_elf_howto_table[R_PPC_ADDR32])
7826 ppc_elf_howto_init ();
7827
7828 htab = ppc_elf_hash_table (info);
7829 local_got_offsets = elf_local_got_offsets (input_bfd);
7830 symtab_hdr = &elf_symtab_hdr (input_bfd);
7831 sym_hashes = elf_sym_hashes (input_bfd);
7832 /* We have to handle relocations in vxworks .tls_vars sections
7833 specially, because the dynamic loader is 'weird'. */
7834 is_vxworks_tls = (htab->is_vxworks && bfd_link_pic (info)
7835 && !strcmp (input_section->output_section->name,
7836 ".tls_vars"));
7837 if (input_section->sec_info_type == SEC_INFO_TYPE_TARGET)
7838 relax_info = elf_section_data (input_section)->sec_info;
7839 rel = wrel = relocs;
7840 relend = relocs + input_section->reloc_count;
7841 for (; rel < relend; wrel++, rel++)
7842 {
7843 enum elf_ppc_reloc_type r_type;
7844 bfd_vma addend;
7845 bfd_reloc_status_type r;
7846 Elf_Internal_Sym *sym;
7847 asection *sec;
7848 struct elf_link_hash_entry *h;
7849 const char *sym_name;
7850 reloc_howto_type *howto;
7851 unsigned long r_symndx;
7852 bfd_vma relocation;
7853 bfd_vma branch_bit, from;
7854 bfd_boolean unresolved_reloc;
7855 bfd_boolean warned;
7856 unsigned int tls_type, tls_mask, tls_gd;
7857 struct plt_entry **ifunc;
7858 struct reloc_howto_struct alt_howto;
7859
7860 again:
7861 r_type = ELF32_R_TYPE (rel->r_info);
7862 sym = NULL;
7863 sec = NULL;
7864 h = NULL;
7865 unresolved_reloc = FALSE;
7866 warned = FALSE;
7867 r_symndx = ELF32_R_SYM (rel->r_info);
7868
7869 if (r_symndx < symtab_hdr->sh_info)
7870 {
7871 sym = local_syms + r_symndx;
7872 sec = local_sections[r_symndx];
7873 sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
7874
7875 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
7876 }
7877 else
7878 {
7879 bfd_boolean ignored;
7880
7881 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
7882 r_symndx, symtab_hdr, sym_hashes,
7883 h, sec, relocation,
7884 unresolved_reloc, warned, ignored);
7885
7886 sym_name = h->root.root.string;
7887 }
7888
7889 if (sec != NULL && discarded_section (sec))
7890 {
7891 /* For relocs against symbols from removed linkonce sections,
7892 or sections discarded by a linker script, we just want the
7893 section contents zeroed. Avoid any special processing. */
7894 howto = NULL;
7895 if (r_type < R_PPC_max)
7896 howto = ppc_elf_howto_table[r_type];
7897
7898 _bfd_clear_contents (howto, input_bfd, input_section,
7899 contents + rel->r_offset);
7900 wrel->r_offset = rel->r_offset;
7901 wrel->r_info = 0;
7902 wrel->r_addend = 0;
7903
7904 /* For ld -r, remove relocations in debug sections against
7905 sections defined in discarded sections. Not done for
7906 non-debug to preserve relocs in .eh_frame which the
7907 eh_frame editing code expects to be present. */
7908 if (bfd_link_relocatable (info)
7909 && (input_section->flags & SEC_DEBUGGING))
7910 wrel--;
7911
7912 continue;
7913 }
7914
7915 if (bfd_link_relocatable (info))
7916 {
7917 if (got2 != NULL
7918 && r_type == R_PPC_PLTREL24
7919 && rel->r_addend != 0)
7920 {
7921 /* R_PPC_PLTREL24 is rather special. If non-zero, the
7922 addend specifies the GOT pointer offset within .got2. */
7923 rel->r_addend += got2->output_offset;
7924 }
7925 if (r_type != R_PPC_RELAX_PLT
7926 && r_type != R_PPC_RELAX_PLTREL24
7927 && r_type != R_PPC_RELAX)
7928 goto copy_reloc;
7929 }
7930
7931 /* TLS optimizations. Replace instruction sequences and relocs
7932 based on information we collected in tls_optimize. We edit
7933 RELOCS so that --emit-relocs will output something sensible
7934 for the final instruction stream. */
7935 tls_mask = 0;
7936 tls_gd = 0;
7937 if (h != NULL)
7938 tls_mask = ((struct ppc_elf_link_hash_entry *) h)->tls_mask;
7939 else if (local_got_offsets != NULL)
7940 {
7941 struct plt_entry **local_plt;
7942 char *lgot_masks;
7943 local_plt
7944 = (struct plt_entry **) (local_got_offsets + symtab_hdr->sh_info);
7945 lgot_masks = (char *) (local_plt + symtab_hdr->sh_info);
7946 tls_mask = lgot_masks[r_symndx];
7947 }
7948
7949 /* Ensure reloc mapping code below stays sane. */
7950 if ((R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TLSGD16 & 3)
7951 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TLSGD16_LO & 3)
7952 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TLSGD16_HI & 3)
7953 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TLSGD16_HA & 3)
7954 || (R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TPREL16 & 3)
7955 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TPREL16_LO & 3)
7956 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TPREL16_HI & 3)
7957 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TPREL16_HA & 3))
7958 abort ();
7959 switch (r_type)
7960 {
7961 default:
7962 break;
7963
7964 case R_PPC_GOT_TPREL16:
7965 case R_PPC_GOT_TPREL16_LO:
7966 if ((tls_mask & TLS_TLS) != 0
7967 && (tls_mask & TLS_TPREL) == 0)
7968 {
7969 bfd_vma insn;
7970
7971 insn = bfd_get_32 (input_bfd,
7972 contents + rel->r_offset - d_offset);
7973 insn &= 31 << 21;
7974 insn |= 0x3c020000; /* addis 0,2,0 */
7975 bfd_put_32 (input_bfd, insn,
7976 contents + rel->r_offset - d_offset);
7977 r_type = R_PPC_TPREL16_HA;
7978 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7979 }
7980 break;
7981
7982 case R_PPC_TLS:
7983 if ((tls_mask & TLS_TLS) != 0
7984 && (tls_mask & TLS_TPREL) == 0)
7985 {
7986 bfd_vma insn;
7987
7988 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
7989 insn = _bfd_elf_ppc_at_tls_transform (insn, 2);
7990 if (insn == 0)
7991 abort ();
7992 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
7993 r_type = R_PPC_TPREL16_LO;
7994 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7995
7996 /* Was PPC_TLS which sits on insn boundary, now
7997 PPC_TPREL16_LO which is at low-order half-word. */
7998 rel->r_offset += d_offset;
7999 }
8000 break;
8001
8002 case R_PPC_GOT_TLSGD16_HI:
8003 case R_PPC_GOT_TLSGD16_HA:
8004 tls_gd = TLS_TPRELGD;
8005 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
8006 goto tls_gdld_hi;
8007 break;
8008
8009 case R_PPC_GOT_TLSLD16_HI:
8010 case R_PPC_GOT_TLSLD16_HA:
8011 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
8012 {
8013 tls_gdld_hi:
8014 if ((tls_mask & tls_gd) != 0)
8015 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
8016 + R_PPC_GOT_TPREL16);
8017 else
8018 {
8019 rel->r_offset -= d_offset;
8020 bfd_put_32 (input_bfd, NOP, contents + rel->r_offset);
8021 r_type = R_PPC_NONE;
8022 }
8023 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
8024 }
8025 break;
8026
8027 case R_PPC_GOT_TLSGD16:
8028 case R_PPC_GOT_TLSGD16_LO:
8029 tls_gd = TLS_TPRELGD;
8030 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
8031 goto tls_ldgd_opt;
8032 break;
8033
8034 case R_PPC_GOT_TLSLD16:
8035 case R_PPC_GOT_TLSLD16_LO:
8036 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
8037 {
8038 unsigned int insn1, insn2;
8039 bfd_vma offset;
8040
8041 tls_ldgd_opt:
8042 offset = (bfd_vma) -1;
8043 /* If not using the newer R_PPC_TLSGD/LD to mark
8044 __tls_get_addr calls, we must trust that the call
8045 stays with its arg setup insns, ie. that the next
8046 reloc is the __tls_get_addr call associated with
8047 the current reloc. Edit both insns. */
8048 if (input_section->has_tls_get_addr_call
8049 && rel + 1 < relend
8050 && branch_reloc_hash_match (input_bfd, rel + 1,
8051 htab->tls_get_addr))
8052 offset = rel[1].r_offset;
8053 /* We read the low GOT_TLS insn because we need to keep
8054 the destination reg. It may be something other than
8055 the usual r3, and moved to r3 before the call by
8056 intervening code. */
8057 insn1 = bfd_get_32 (input_bfd,
8058 contents + rel->r_offset - d_offset);
8059 if ((tls_mask & tls_gd) != 0)
8060 {
8061 /* IE */
8062 insn1 &= (0x1f << 21) | (0x1f << 16);
8063 insn1 |= 32 << 26; /* lwz */
8064 if (offset != (bfd_vma) -1)
8065 {
8066 rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
8067 insn2 = 0x7c631214; /* add 3,3,2 */
8068 bfd_put_32 (input_bfd, insn2, contents + offset);
8069 }
8070 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
8071 + R_PPC_GOT_TPREL16);
8072 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
8073 }
8074 else
8075 {
8076 /* LE */
8077 insn1 &= 0x1f << 21;
8078 insn1 |= 0x3c020000; /* addis r,2,0 */
8079 if (tls_gd == 0)
8080 {
8081 /* Was an LD reloc. */
8082 for (r_symndx = 0;
8083 r_symndx < symtab_hdr->sh_info;
8084 r_symndx++)
8085 if (local_sections[r_symndx] == sec)
8086 break;
8087 if (r_symndx >= symtab_hdr->sh_info)
8088 r_symndx = STN_UNDEF;
8089 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
8090 if (r_symndx != STN_UNDEF)
8091 rel->r_addend -= (local_syms[r_symndx].st_value
8092 + sec->output_offset
8093 + sec->output_section->vma);
8094 }
8095 r_type = R_PPC_TPREL16_HA;
8096 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
8097 if (offset != (bfd_vma) -1)
8098 {
8099 rel[1].r_info = ELF32_R_INFO (r_symndx, R_PPC_TPREL16_LO);
8100 rel[1].r_offset = offset + d_offset;
8101 rel[1].r_addend = rel->r_addend;
8102 insn2 = 0x38630000; /* addi 3,3,0 */
8103 bfd_put_32 (input_bfd, insn2, contents + offset);
8104 }
8105 }
8106 bfd_put_32 (input_bfd, insn1,
8107 contents + rel->r_offset - d_offset);
8108 if (tls_gd == 0)
8109 {
8110 /* We changed the symbol on an LD reloc. Start over
8111 in order to get h, sym, sec etc. right. */
8112 goto again;
8113 }
8114 }
8115 break;
8116
8117 case R_PPC_TLSGD:
8118 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
8119 {
8120 unsigned int insn2;
8121 bfd_vma offset = rel->r_offset;
8122
8123 if ((tls_mask & TLS_TPRELGD) != 0)
8124 {
8125 /* IE */
8126 r_type = R_PPC_NONE;
8127 insn2 = 0x7c631214; /* add 3,3,2 */
8128 }
8129 else
8130 {
8131 /* LE */
8132 r_type = R_PPC_TPREL16_LO;
8133 rel->r_offset += d_offset;
8134 insn2 = 0x38630000; /* addi 3,3,0 */
8135 }
8136 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
8137 bfd_put_32 (input_bfd, insn2, contents + offset);
8138 /* Zap the reloc on the _tls_get_addr call too. */
8139 BFD_ASSERT (offset == rel[1].r_offset);
8140 rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
8141 }
8142 break;
8143
8144 case R_PPC_TLSLD:
8145 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
8146 {
8147 unsigned int insn2;
8148
8149 for (r_symndx = 0;
8150 r_symndx < symtab_hdr->sh_info;
8151 r_symndx++)
8152 if (local_sections[r_symndx] == sec)
8153 break;
8154 if (r_symndx >= symtab_hdr->sh_info)
8155 r_symndx = STN_UNDEF;
8156 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
8157 if (r_symndx != STN_UNDEF)
8158 rel->r_addend -= (local_syms[r_symndx].st_value
8159 + sec->output_offset
8160 + sec->output_section->vma);
8161
8162 rel->r_info = ELF32_R_INFO (r_symndx, R_PPC_TPREL16_LO);
8163 rel->r_offset += d_offset;
8164 insn2 = 0x38630000; /* addi 3,3,0 */
8165 bfd_put_32 (input_bfd, insn2,
8166 contents + rel->r_offset - d_offset);
8167 /* Zap the reloc on the _tls_get_addr call too. */
8168 BFD_ASSERT (rel->r_offset - d_offset == rel[1].r_offset);
8169 rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
8170 goto again;
8171 }
8172 break;
8173 }
8174
8175 /* Handle other relocations that tweak non-addend part of insn. */
8176 branch_bit = 0;
8177 switch (r_type)
8178 {
8179 default:
8180 break;
8181
8182 /* Branch taken prediction relocations. */
8183 case R_PPC_ADDR14_BRTAKEN:
8184 case R_PPC_REL14_BRTAKEN:
8185 branch_bit = BRANCH_PREDICT_BIT;
8186 /* Fall through. */
8187
8188 /* Branch not taken prediction relocations. */
8189 case R_PPC_ADDR14_BRNTAKEN:
8190 case R_PPC_REL14_BRNTAKEN:
8191 {
8192 bfd_vma insn;
8193
8194 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
8195 insn &= ~BRANCH_PREDICT_BIT;
8196 insn |= branch_bit;
8197
8198 from = (rel->r_offset
8199 + input_section->output_offset
8200 + input_section->output_section->vma);
8201
8202 /* Invert 'y' bit if not the default. */
8203 if ((bfd_signed_vma) (relocation + rel->r_addend - from) < 0)
8204 insn ^= BRANCH_PREDICT_BIT;
8205
8206 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
8207 break;
8208 }
8209 }
8210
8211 if (ELIMINATE_COPY_RELOCS
8212 && h != NULL
8213 && !h->def_regular
8214 && h->protected_def
8215 && ppc_elf_hash_entry (h)->has_addr16_ha
8216 && ppc_elf_hash_entry (h)->has_addr16_lo
8217 && htab->params->pic_fixup > 0)
8218 {
8219 /* Convert lis;addi or lis;load/store accessing a protected
8220 variable defined in a shared library to PIC. */
8221 unsigned int insn;
8222
8223 if (r_type == R_PPC_ADDR16_HA)
8224 {
8225 insn = bfd_get_32 (input_bfd,
8226 contents + rel->r_offset - d_offset);
8227 if ((insn & (0x3f << 26)) == (15u << 26)
8228 && (insn & (0x1f << 16)) == 0 /* lis */)
8229 {
8230 bfd_byte *p;
8231 bfd_vma off;
8232 bfd_vma got_addr;
8233
8234 p = (contents + input_section->size
8235 - relax_info->workaround_size
8236 - relax_info->picfixup_size
8237 + picfixup_size);
8238 off = (p - contents) - (rel->r_offset - d_offset);
8239 if (off > 0x1fffffc || (off & 3) != 0)
8240 info->callbacks->einfo
8241 (_("%H: fixup branch overflow\n"),
8242 input_bfd, input_section, rel->r_offset);
8243
8244 bfd_put_32 (input_bfd, B | off,
8245 contents + rel->r_offset - d_offset);
8246 got_addr = (htab->elf.sgot->output_section->vma
8247 + htab->elf.sgot->output_offset
8248 + (h->got.offset & ~1));
8249 wrel->r_offset = (p - contents) + d_offset;
8250 wrel->r_info = ELF32_R_INFO (0, R_PPC_ADDR16_HA);
8251 wrel->r_addend = got_addr;
8252 insn &= ~0xffff;
8253 insn |= ((unsigned int )(got_addr + 0x8000) >> 16) & 0xffff;
8254 bfd_put_32 (input_bfd, insn, p);
8255
8256 /* Convert lis to lwz, loading address from GOT. */
8257 insn &= ~0xffff;
8258 insn ^= (32u ^ 15u) << 26;
8259 insn |= (insn & (0x1f << 21)) >> 5;
8260 insn |= got_addr & 0xffff;
8261 bfd_put_32 (input_bfd, insn, p + 4);
8262
8263 bfd_put_32 (input_bfd, B | ((-4 - off) & 0x3ffffff), p + 8);
8264 picfixup_size += 12;
8265
8266 /* Use one of the spare relocs, so --emit-relocs
8267 output is reasonable. */
8268 memmove (rel + 1, rel, (relend - rel - 1) * sizeof (*rel));
8269 wrel++, rel++;
8270 rel->r_offset = wrel[-1].r_offset + 4;
8271 rel->r_info = ELF32_R_INFO (0, R_PPC_ADDR16_LO);
8272 rel->r_addend = wrel[-1].r_addend;
8273
8274 /* Continue on as if we had a got reloc, to output
8275 dynamic reloc. */
8276 r_type = R_PPC_GOT16_LO;
8277 }
8278 else
8279 info->callbacks->einfo
8280 /* xgettext:c-format */
8281 (_("%H: error: %s with unexpected instruction %x\n"),
8282 input_bfd, input_section, rel->r_offset,
8283 "R_PPC_ADDR16_HA", insn);
8284 }
8285 else if (r_type == R_PPC_ADDR16_LO)
8286 {
8287 insn = bfd_get_32 (input_bfd,
8288 contents + rel->r_offset - d_offset);
8289 if ((insn & (0x3f << 26)) == 14u << 26 /* addi */
8290 || (insn & (0x3f << 26)) == 32u << 26 /* lwz */
8291 || (insn & (0x3f << 26)) == 34u << 26 /* lbz */
8292 || (insn & (0x3f << 26)) == 36u << 26 /* stw */
8293 || (insn & (0x3f << 26)) == 38u << 26 /* stb */
8294 || (insn & (0x3f << 26)) == 40u << 26 /* lhz */
8295 || (insn & (0x3f << 26)) == 42u << 26 /* lha */
8296 || (insn & (0x3f << 26)) == 44u << 26 /* sth */
8297 || (insn & (0x3f << 26)) == 46u << 26 /* lmw */
8298 || (insn & (0x3f << 26)) == 47u << 26 /* stmw */
8299 || (insn & (0x3f << 26)) == 48u << 26 /* lfs */
8300 || (insn & (0x3f << 26)) == 50u << 26 /* lfd */
8301 || (insn & (0x3f << 26)) == 52u << 26 /* stfs */
8302 || (insn & (0x3f << 26)) == 54u << 26 /* stfd */
8303 || ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
8304 && (insn & 3) != 1)
8305 || ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */
8306 && ((insn & 3) == 0 || (insn & 3) == 3)))
8307 {
8308 /* Arrange to apply the reloc addend, if any. */
8309 relocation = 0;
8310 unresolved_reloc = FALSE;
8311 rel->r_info = ELF32_R_INFO (0, r_type);
8312 }
8313 else
8314 info->callbacks->einfo
8315 /* xgettext:c-format */
8316 (_("%H: error: %s with unexpected instruction %x\n"),
8317 input_bfd, input_section, rel->r_offset,
8318 "R_PPC_ADDR16_LO", insn);
8319 }
8320 }
8321
8322 ifunc = NULL;
8323 if (!htab->is_vxworks)
8324 {
8325 struct plt_entry *ent;
8326
8327 if (h != NULL)
8328 {
8329 if (h->type == STT_GNU_IFUNC)
8330 ifunc = &h->plt.plist;
8331 }
8332 else if (local_got_offsets != NULL
8333 && ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
8334 {
8335 struct plt_entry **local_plt;
8336
8337 local_plt = (struct plt_entry **) (local_got_offsets
8338 + symtab_hdr->sh_info);
8339 ifunc = local_plt + r_symndx;
8340 }
8341
8342 ent = NULL;
8343 if (ifunc != NULL
8344 && (!bfd_link_pic (info)
8345 || is_branch_reloc (r_type)))
8346 {
8347 addend = 0;
8348 if (r_type == R_PPC_PLTREL24 && bfd_link_pic (info))
8349 addend = rel->r_addend;
8350 ent = find_plt_ent (ifunc, got2, addend);
8351 }
8352 if (ent != NULL)
8353 {
8354 if (bfd_link_pic (info)
8355 && ent->sec != got2
8356 && htab->plt_type != PLT_NEW
8357 && (!htab->elf.dynamic_sections_created
8358 || h == NULL
8359 || h->dynindx == -1))
8360 {
8361 /* Uh oh, we are going to create a pic glink stub
8362 for an ifunc (here for h == NULL and later in
8363 finish_dynamic_symbol for h != NULL), and
8364 apparently are using code compiled with
8365 -mbss-plt. The difficulty is that -mbss-plt code
8366 gives no indication via a magic PLTREL24 addend
8367 whether r30 is equal to _GLOBAL_OFFSET_TABLE_ or
8368 is pointing into a .got2 section (and how far
8369 into .got2). */
8370 info->callbacks->einfo
8371 /* xgettext:c-format */
8372 (_("%X%H: unsupported bss-plt -fPIC ifunc %s\n"),
8373 input_bfd, input_section, rel->r_offset, sym_name);
8374 }
8375 if (h == NULL && (ent->plt.offset & 1) == 0)
8376 {
8377 Elf_Internal_Rela rela;
8378 bfd_byte *loc;
8379
8380 rela.r_offset = (htab->elf.iplt->output_section->vma
8381 + htab->elf.iplt->output_offset
8382 + ent->plt.offset);
8383 rela.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
8384 rela.r_addend = relocation;
8385 loc = htab->elf.irelplt->contents;
8386 loc += (htab->elf.irelplt->reloc_count++
8387 * sizeof (Elf32_External_Rela));
8388 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
8389
8390 ent->plt.offset |= 1;
8391 }
8392 if (h == NULL && (ent->glink_offset & 1) == 0)
8393 {
8394 unsigned char *p = ((unsigned char *) htab->glink->contents
8395 + ent->glink_offset);
8396 write_glink_stub (ent, htab->elf.iplt, p, info);
8397 ent->glink_offset |= 1;
8398 }
8399
8400 unresolved_reloc = FALSE;
8401 if (htab->plt_type == PLT_NEW
8402 || !htab->elf.dynamic_sections_created
8403 || h == NULL
8404 || h->dynindx == -1)
8405 relocation = (htab->glink->output_section->vma
8406 + htab->glink->output_offset
8407 + (ent->glink_offset & ~1));
8408 else
8409 relocation = (htab->elf.splt->output_section->vma
8410 + htab->elf.splt->output_offset
8411 + ent->plt.offset);
8412 }
8413 }
8414
8415 addend = rel->r_addend;
8416 tls_type = 0;
8417 howto = NULL;
8418 if (r_type < R_PPC_max)
8419 howto = ppc_elf_howto_table[r_type];
8420 switch (r_type)
8421 {
8422 default:
8423 info->callbacks->einfo
8424 /* xgettext:c-format */
8425 (_("%P: %B: unknown relocation type %d for symbol %s\n"),
8426 input_bfd, (int) r_type, sym_name);
8427
8428 bfd_set_error (bfd_error_bad_value);
8429 ret = FALSE;
8430 goto copy_reloc;
8431
8432 case R_PPC_NONE:
8433 case R_PPC_TLS:
8434 case R_PPC_TLSGD:
8435 case R_PPC_TLSLD:
8436 case R_PPC_EMB_MRKREF:
8437 case R_PPC_GNU_VTINHERIT:
8438 case R_PPC_GNU_VTENTRY:
8439 goto copy_reloc;
8440
8441 /* GOT16 relocations. Like an ADDR16 using the symbol's
8442 address in the GOT as relocation value instead of the
8443 symbol's value itself. Also, create a GOT entry for the
8444 symbol and put the symbol value there. */
8445 case R_PPC_GOT_TLSGD16:
8446 case R_PPC_GOT_TLSGD16_LO:
8447 case R_PPC_GOT_TLSGD16_HI:
8448 case R_PPC_GOT_TLSGD16_HA:
8449 tls_type = TLS_TLS | TLS_GD;
8450 goto dogot;
8451
8452 case R_PPC_GOT_TLSLD16:
8453 case R_PPC_GOT_TLSLD16_LO:
8454 case R_PPC_GOT_TLSLD16_HI:
8455 case R_PPC_GOT_TLSLD16_HA:
8456 tls_type = TLS_TLS | TLS_LD;
8457 goto dogot;
8458
8459 case R_PPC_GOT_TPREL16:
8460 case R_PPC_GOT_TPREL16_LO:
8461 case R_PPC_GOT_TPREL16_HI:
8462 case R_PPC_GOT_TPREL16_HA:
8463 tls_type = TLS_TLS | TLS_TPREL;
8464 goto dogot;
8465
8466 case R_PPC_GOT_DTPREL16:
8467 case R_PPC_GOT_DTPREL16_LO:
8468 case R_PPC_GOT_DTPREL16_HI:
8469 case R_PPC_GOT_DTPREL16_HA:
8470 tls_type = TLS_TLS | TLS_DTPREL;
8471 goto dogot;
8472
8473 case R_PPC_GOT16:
8474 case R_PPC_GOT16_LO:
8475 case R_PPC_GOT16_HI:
8476 case R_PPC_GOT16_HA:
8477 tls_mask = 0;
8478 dogot:
8479 {
8480 /* Relocation is to the entry for this symbol in the global
8481 offset table. */
8482 bfd_vma off;
8483 bfd_vma *offp;
8484 unsigned long indx;
8485
8486 if (htab->elf.sgot == NULL)
8487 abort ();
8488
8489 indx = 0;
8490 if (tls_type == (TLS_TLS | TLS_LD)
8491 && (h == NULL
8492 || !h->def_dynamic))
8493 offp = &htab->tlsld_got.offset;
8494 else if (h != NULL)
8495 {
8496 if (!htab->elf.dynamic_sections_created
8497 || h->dynindx == -1
8498 || SYMBOL_REFERENCES_LOCAL (info, h)
8499 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
8500 && h->root.type == bfd_link_hash_undefweak))
8501 /* This is actually a static link, or it is a
8502 -Bsymbolic link and the symbol is defined
8503 locally, or the symbol was forced to be local
8504 because of a version file. */
8505 ;
8506 else
8507 {
8508 indx = h->dynindx;
8509 unresolved_reloc = FALSE;
8510 }
8511 offp = &h->got.offset;
8512 }
8513 else
8514 {
8515 if (local_got_offsets == NULL)
8516 abort ();
8517 offp = &local_got_offsets[r_symndx];
8518 }
8519
8520 /* The offset must always be a multiple of 4. We use the
8521 least significant bit to record whether we have already
8522 processed this entry. */
8523 off = *offp;
8524 if ((off & 1) != 0)
8525 off &= ~1;
8526 else
8527 {
8528 unsigned int tls_m = (tls_mask
8529 & (TLS_LD | TLS_GD | TLS_DTPREL
8530 | TLS_TPREL | TLS_TPRELGD));
8531
8532 if (offp == &htab->tlsld_got.offset)
8533 tls_m = TLS_LD;
8534 else if (h == NULL
8535 || !h->def_dynamic)
8536 tls_m &= ~TLS_LD;
8537
8538 /* We might have multiple got entries for this sym.
8539 Initialize them all. */
8540 do
8541 {
8542 int tls_ty = 0;
8543
8544 if ((tls_m & TLS_LD) != 0)
8545 {
8546 tls_ty = TLS_TLS | TLS_LD;
8547 tls_m &= ~TLS_LD;
8548 }
8549 else if ((tls_m & TLS_GD) != 0)
8550 {
8551 tls_ty = TLS_TLS | TLS_GD;
8552 tls_m &= ~TLS_GD;
8553 }
8554 else if ((tls_m & TLS_DTPREL) != 0)
8555 {
8556 tls_ty = TLS_TLS | TLS_DTPREL;
8557 tls_m &= ~TLS_DTPREL;
8558 }
8559 else if ((tls_m & (TLS_TPREL | TLS_TPRELGD)) != 0)
8560 {
8561 tls_ty = TLS_TLS | TLS_TPREL;
8562 tls_m = 0;
8563 }
8564
8565 /* Generate relocs for the dynamic linker. */
8566 if (indx != 0
8567 || (bfd_link_pic (info)
8568 && (h == NULL
8569 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
8570 || h->root.type != bfd_link_hash_undefweak
8571 || offp == &htab->tlsld_got.offset)))
8572 {
8573 asection *rsec = htab->elf.srelgot;
8574 bfd_byte * loc;
8575
8576 if (ifunc != NULL)
8577 rsec = htab->elf.irelplt;
8578 outrel.r_offset = (htab->elf.sgot->output_section->vma
8579 + htab->elf.sgot->output_offset
8580 + off);
8581 outrel.r_addend = 0;
8582 if (tls_ty & (TLS_LD | TLS_GD))
8583 {
8584 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPMOD32);
8585 if (tls_ty == (TLS_TLS | TLS_GD))
8586 {
8587 loc = rsec->contents;
8588 loc += (rsec->reloc_count++
8589 * sizeof (Elf32_External_Rela));
8590 bfd_elf32_swap_reloca_out (output_bfd,
8591 &outrel, loc);
8592 outrel.r_offset += 4;
8593 outrel.r_info
8594 = ELF32_R_INFO (indx, R_PPC_DTPREL32);
8595 }
8596 }
8597 else if (tls_ty == (TLS_TLS | TLS_DTPREL))
8598 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPREL32);
8599 else if (tls_ty == (TLS_TLS | TLS_TPREL))
8600 outrel.r_info = ELF32_R_INFO (indx, R_PPC_TPREL32);
8601 else if (indx != 0)
8602 outrel.r_info = ELF32_R_INFO (indx, R_PPC_GLOB_DAT);
8603 else if (ifunc != NULL)
8604 outrel.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
8605 else
8606 outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
8607 if (indx == 0 && tls_ty != (TLS_TLS | TLS_LD))
8608 {
8609 outrel.r_addend += relocation;
8610 if (tls_ty & (TLS_GD | TLS_DTPREL | TLS_TPREL))
8611 {
8612 if (htab->elf.tls_sec == NULL)
8613 outrel.r_addend = 0;
8614 else
8615 outrel.r_addend -= htab->elf.tls_sec->vma;
8616 }
8617 }
8618 loc = rsec->contents;
8619 loc += (rsec->reloc_count++
8620 * sizeof (Elf32_External_Rela));
8621 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
8622 }
8623
8624 /* Init the .got section contents if we're not
8625 emitting a reloc. */
8626 else
8627 {
8628 bfd_vma value = relocation;
8629 int tlsopt = (htab->plt_type == PLT_NEW
8630 && !htab->params->no_tls_get_addr_opt
8631 && htab->tls_get_addr != NULL
8632 && htab->tls_get_addr->plt.plist != NULL);
8633
8634 if (tls_ty != 0)
8635 {
8636 if (htab->elf.tls_sec == NULL)
8637 value = 0;
8638 else
8639 {
8640 if (tls_ty & TLS_LD)
8641 value = 0;
8642 else
8643 value -= htab->elf.tls_sec->vma + DTP_OFFSET;
8644 if ((tls_ty & TLS_TPREL)
8645 || (tlsopt && !(tls_ty & TLS_DTPREL)))
8646 value += DTP_OFFSET - TP_OFFSET;
8647 }
8648
8649 if (tls_ty & (TLS_LD | TLS_GD))
8650 {
8651 bfd_put_32 (input_bfd, value,
8652 htab->elf.sgot->contents + off + 4);
8653 value = !tlsopt;
8654 }
8655 }
8656 bfd_put_32 (input_bfd, value,
8657 htab->elf.sgot->contents + off);
8658 }
8659
8660 off += 4;
8661 if (tls_ty & (TLS_LD | TLS_GD))
8662 off += 4;
8663 }
8664 while (tls_m != 0);
8665
8666 off = *offp;
8667 *offp = off | 1;
8668 }
8669
8670 if (off >= (bfd_vma) -2)
8671 abort ();
8672
8673 if ((tls_type & TLS_TLS) != 0)
8674 {
8675 if (tls_type != (TLS_TLS | TLS_LD))
8676 {
8677 if ((tls_mask & TLS_LD) != 0
8678 && !(h == NULL
8679 || !h->def_dynamic))
8680 off += 8;
8681 if (tls_type != (TLS_TLS | TLS_GD))
8682 {
8683 if ((tls_mask & TLS_GD) != 0)
8684 off += 8;
8685 if (tls_type != (TLS_TLS | TLS_DTPREL))
8686 {
8687 if ((tls_mask & TLS_DTPREL) != 0)
8688 off += 4;
8689 }
8690 }
8691 }
8692 }
8693
8694 /* If here for a picfixup, we're done. */
8695 if (r_type != ELF32_R_TYPE (rel->r_info))
8696 goto copy_reloc;
8697
8698 relocation = (htab->elf.sgot->output_section->vma
8699 + htab->elf.sgot->output_offset
8700 + off
8701 - SYM_VAL (htab->elf.hgot));
8702
8703 /* Addends on got relocations don't make much sense.
8704 x+off@got is actually x@got+off, and since the got is
8705 generated by a hash table traversal, the value in the
8706 got at entry m+n bears little relation to the entry m. */
8707 if (addend != 0)
8708 info->callbacks->einfo
8709 /* xgettext:c-format */
8710 (_("%H: non-zero addend on %s reloc against `%s'\n"),
8711 input_bfd, input_section, rel->r_offset,
8712 howto->name,
8713 sym_name);
8714 }
8715 break;
8716
8717 /* Relocations that need no special processing. */
8718 case R_PPC_LOCAL24PC:
8719 /* It makes no sense to point a local relocation
8720 at a symbol not in this object. */
8721 if (unresolved_reloc)
8722 {
8723 (*info->callbacks->undefined_symbol) (info,
8724 h->root.root.string,
8725 input_bfd,
8726 input_section,
8727 rel->r_offset,
8728 TRUE);
8729 goto copy_reloc;
8730 }
8731 if (h != NULL && h->type == STT_GNU_IFUNC && bfd_link_pic (info))
8732 {
8733 /* @local on an ifunc does not really make sense since
8734 the ifunc resolver can take you anywhere. More
8735 seriously, calls to ifuncs must go through a plt call
8736 stub, and for pic the plt call stubs uses r30 to
8737 access the PLT. The problem is that a call that is
8738 local won't have the +32k reloc addend trick marking
8739 -fPIC code, so the linker won't know whether r30 is
8740 _GLOBAL_OFFSET_TABLE_ or pointing into a .got2 section. */
8741 /* xgettext:c-format */
8742 info->callbacks->einfo (_("%X%H: @local call to ifunc %s\n"),
8743 input_bfd, input_section, rel->r_offset,
8744 h->root.root.string);
8745 }
8746 break;
8747
8748 case R_PPC_DTPREL16:
8749 case R_PPC_DTPREL16_LO:
8750 case R_PPC_DTPREL16_HI:
8751 case R_PPC_DTPREL16_HA:
8752 if (htab->elf.tls_sec != NULL)
8753 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
8754 break;
8755
8756 /* Relocations that may need to be propagated if this is a shared
8757 object. */
8758 case R_PPC_TPREL16:
8759 case R_PPC_TPREL16_LO:
8760 case R_PPC_TPREL16_HI:
8761 case R_PPC_TPREL16_HA:
8762 if (h != NULL
8763 && h->root.type == bfd_link_hash_undefweak
8764 && h->dynindx == -1)
8765 {
8766 /* Make this relocation against an undefined weak symbol
8767 resolve to zero. This is really just a tweak, since
8768 code using weak externs ought to check that they are
8769 defined before using them. */
8770 bfd_byte *p = contents + rel->r_offset - d_offset;
8771 unsigned int insn = bfd_get_32 (input_bfd, p);
8772 insn = _bfd_elf_ppc_at_tprel_transform (insn, 2);
8773 if (insn != 0)
8774 bfd_put_32 (input_bfd, insn, p);
8775 break;
8776 }
8777 if (htab->elf.tls_sec != NULL)
8778 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
8779 /* The TPREL16 relocs shouldn't really be used in shared
8780 libs as they will result in DT_TEXTREL being set, but
8781 support them anyway. */
8782 goto dodyn;
8783
8784 case R_PPC_TPREL32:
8785 if (htab->elf.tls_sec != NULL)
8786 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
8787 goto dodyn;
8788
8789 case R_PPC_DTPREL32:
8790 if (htab->elf.tls_sec != NULL)
8791 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
8792 goto dodyn;
8793
8794 case R_PPC_DTPMOD32:
8795 relocation = 1;
8796 addend = 0;
8797 goto dodyn;
8798
8799 case R_PPC_REL16:
8800 case R_PPC_REL16_LO:
8801 case R_PPC_REL16_HI:
8802 case R_PPC_REL16_HA:
8803 case R_PPC_REL16DX_HA:
8804 break;
8805
8806 case R_PPC_REL32:
8807 if (h == NULL || h == htab->elf.hgot)
8808 break;
8809 /* fall through */
8810
8811 case R_PPC_ADDR32:
8812 case R_PPC_ADDR16:
8813 case R_PPC_ADDR16_LO:
8814 case R_PPC_ADDR16_HI:
8815 case R_PPC_ADDR16_HA:
8816 case R_PPC_UADDR32:
8817 case R_PPC_UADDR16:
8818 goto dodyn;
8819
8820 case R_PPC_VLE_REL8:
8821 case R_PPC_VLE_REL15:
8822 case R_PPC_VLE_REL24:
8823 case R_PPC_REL24:
8824 case R_PPC_REL14:
8825 case R_PPC_REL14_BRTAKEN:
8826 case R_PPC_REL14_BRNTAKEN:
8827 /* If these relocations are not to a named symbol, they can be
8828 handled right here, no need to bother the dynamic linker. */
8829 if (SYMBOL_CALLS_LOCAL (info, h)
8830 || h == htab->elf.hgot)
8831 break;
8832 /* fall through */
8833
8834 case R_PPC_ADDR24:
8835 case R_PPC_ADDR14:
8836 case R_PPC_ADDR14_BRTAKEN:
8837 case R_PPC_ADDR14_BRNTAKEN:
8838 if (h != NULL && !bfd_link_pic (info))
8839 break;
8840 /* fall through */
8841
8842 dodyn:
8843 if ((input_section->flags & SEC_ALLOC) == 0
8844 || is_vxworks_tls)
8845 break;
8846
8847 if ((bfd_link_pic (info)
8848 && !(h != NULL
8849 && ((h->root.type == bfd_link_hash_undefined
8850 && (ELF_ST_VISIBILITY (h->other) == STV_HIDDEN
8851 || ELF_ST_VISIBILITY (h->other) == STV_INTERNAL))
8852 || (h->root.type == bfd_link_hash_undefweak
8853 && ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)))
8854 && (must_be_dyn_reloc (info, r_type)
8855 || !SYMBOL_CALLS_LOCAL (info, h)))
8856 || (ELIMINATE_COPY_RELOCS
8857 && !bfd_link_pic (info)
8858 && h != NULL
8859 && h->dynindx != -1
8860 && !h->non_got_ref
8861 && !h->def_regular
8862 && !(h->protected_def
8863 && ppc_elf_hash_entry (h)->has_addr16_ha
8864 && ppc_elf_hash_entry (h)->has_addr16_lo
8865 && htab->params->pic_fixup > 0)))
8866 {
8867 int skip;
8868 bfd_byte *loc;
8869 asection *sreloc;
8870#ifdef DEBUG
8871 fprintf (stderr, "ppc_elf_relocate_section needs to "
8872 "create relocation for %s\n",
8873 (h && h->root.root.string
8874 ? h->root.root.string : "<unknown>"));
8875#endif
8876
8877 /* When generating a shared object, these relocations
8878 are copied into the output file to be resolved at run
8879 time. */
8880 sreloc = elf_section_data (input_section)->sreloc;
8881 if (ifunc)
8882 sreloc = htab->elf.irelplt;
8883 if (sreloc == NULL)
8884 return FALSE;
8885
8886 skip = 0;
8887 outrel.r_offset = _bfd_elf_section_offset (output_bfd, info,
8888 input_section,
8889 rel->r_offset);
8890 if (outrel.r_offset == (bfd_vma) -1
8891 || outrel.r_offset == (bfd_vma) -2)
8892 skip = (int) outrel.r_offset;
8893 outrel.r_offset += (input_section->output_section->vma
8894 + input_section->output_offset);
8895
8896 if (skip)
8897 memset (&outrel, 0, sizeof outrel);
8898 else if ((h != NULL
8899 && (h->root.type == bfd_link_hash_undefined
8900 || h->root.type == bfd_link_hash_undefweak))
8901 || !SYMBOL_REFERENCES_LOCAL (info, h))
8902 {
8903 BFD_ASSERT (h->dynindx != -1);
8904 unresolved_reloc = FALSE;
8905 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
8906 outrel.r_addend = rel->r_addend;
8907 }
8908 else
8909 {
8910 outrel.r_addend = relocation + rel->r_addend;
8911
8912 if (r_type != R_PPC_ADDR32)
8913 {
8914 long indx = 0;
8915
8916 if (ifunc != NULL)
8917 {
8918 /* If we get here when building a static
8919 executable, then the libc startup function
8920 responsible for applying indirect function
8921 relocations is going to complain about
8922 the reloc type.
8923 If we get here when building a dynamic
8924 executable, it will be because we have
8925 a text relocation. The dynamic loader
8926 will set the text segment writable and
8927 non-executable to apply text relocations.
8928 So we'll segfault when trying to run the
8929 indirection function to resolve the reloc. */
8930 info->callbacks->einfo
8931 /* xgettext:c-format */
8932 (_("%H: relocation %s for indirect "
8933 "function %s unsupported\n"),
8934 input_bfd, input_section, rel->r_offset,
8935 howto->name,
8936 sym_name);
8937 ret = FALSE;
8938 }
8939 else if (r_symndx == STN_UNDEF || bfd_is_abs_section (sec))
8940 ;
8941 else if (sec == NULL || sec->owner == NULL)
8942 {
8943 bfd_set_error (bfd_error_bad_value);
8944 ret = FALSE;
8945 }
8946 else
8947 {
8948 asection *osec;
8949
8950 /* We are turning this relocation into one
8951 against a section symbol. It would be
8952 proper to subtract the symbol's value,
8953 osec->vma, from the emitted reloc addend,
8954 but ld.so expects buggy relocs.
8955 FIXME: Why not always use a zero index? */
8956 osec = sec->output_section;
8957 indx = elf_section_data (osec)->dynindx;
8958 if (indx == 0)
8959 {
8960 osec = htab->elf.text_index_section;
8961 indx = elf_section_data (osec)->dynindx;
8962 }
8963 BFD_ASSERT (indx != 0);
8964#ifdef DEBUG
8965 if (indx == 0)
8966 printf ("indx=%ld section=%s flags=%08x name=%s\n",
8967 indx, osec->name, osec->flags,
8968 h->root.root.string);
8969#endif
8970 }
8971
8972 outrel.r_info = ELF32_R_INFO (indx, r_type);
8973 }
8974 else if (ifunc != NULL)
8975 outrel.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
8976 else
8977 outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
8978 }
8979
8980 loc = sreloc->contents;
8981 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
8982 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
8983
8984 if (skip == -1)
8985 goto copy_reloc;
8986
8987 /* This reloc will be computed at runtime. Clear the memory
8988 so that it contains a predictable value for prelink. */
8989 if (!skip)
8990 {
8991 relocation = howto->pc_relative ? outrel.r_offset : 0;
8992 addend = 0;
8993 break;
8994 }
8995 }
8996 else if (r_type == R_PPC_DTPMOD32
8997 && htab->plt_type == PLT_NEW
8998 && !htab->params->no_tls_get_addr_opt
8999 && htab->tls_get_addr != NULL
9000 && htab->tls_get_addr->plt.plist != NULL)
9001 {
9002 /* Set up for __tls_get_addr_opt stub when this entry
9003 does not have dynamic relocs. */
9004 relocation = 0;
9005 /* Set up the next word for local dynamic. If it turns
9006 out to be global dynamic, the reloc will overwrite
9007 this value. */
9008 if (rel->r_offset + 8 <= input_section->size)
9009 bfd_put_32 (input_bfd, DTP_OFFSET - TP_OFFSET,
9010 contents + rel->r_offset + 4);
9011 }
9012 else if (r_type == R_PPC_DTPREL32
9013 && htab->plt_type == PLT_NEW
9014 && !htab->params->no_tls_get_addr_opt
9015 && htab->tls_get_addr != NULL
9016 && htab->tls_get_addr->plt.plist != NULL
9017 && rel > relocs
9018 && rel[-1].r_info == ELF32_R_INFO (r_symndx, R_PPC_DTPMOD32)
9019 && rel[-1].r_offset + 4 == rel->r_offset)
9020 {
9021 /* __tls_get_addr_opt stub value. */
9022 addend += DTP_OFFSET - TP_OFFSET;
9023 }
9024 break;
9025
9026 case R_PPC_RELAX_PLT:
9027 case R_PPC_RELAX_PLTREL24:
9028 if (h != NULL)
9029 {
9030 struct plt_entry *ent;
9031 bfd_vma got2_addend = 0;
9032
9033 if (r_type == R_PPC_RELAX_PLTREL24)
9034 {
9035 if (bfd_link_pic (info))
9036 got2_addend = addend;
9037 addend = 0;
9038 }
9039 ent = find_plt_ent (&h->plt.plist, got2, got2_addend);
9040 if (htab->plt_type == PLT_NEW)
9041 relocation = (htab->glink->output_section->vma
9042 + htab->glink->output_offset
9043 + ent->glink_offset);
9044 else
9045 relocation = (htab->elf.splt->output_section->vma
9046 + htab->elf.splt->output_offset
9047 + ent->plt.offset);
9048 }
9049 /* Fall through. */
9050
9051 case R_PPC_RELAX:
9052 {
9053 const int *stub;
9054 size_t size;
9055 size_t insn_offset = rel->r_offset;
9056 unsigned int insn;
9057
9058 if (bfd_link_pic (info))
9059 {
9060 relocation -= (input_section->output_section->vma
9061 + input_section->output_offset
9062 + rel->r_offset - 4);
9063 stub = shared_stub_entry;
9064 bfd_put_32 (input_bfd, stub[0], contents + insn_offset - 12);
9065 bfd_put_32 (input_bfd, stub[1], contents + insn_offset - 8);
9066 bfd_put_32 (input_bfd, stub[2], contents + insn_offset - 4);
9067 stub += 3;
9068 size = ARRAY_SIZE (shared_stub_entry) - 3;
9069 }
9070 else
9071 {
9072 stub = stub_entry;
9073 size = ARRAY_SIZE (stub_entry);
9074 }
9075
9076 relocation += addend;
9077 if (bfd_link_relocatable (info))
9078 relocation = 0;
9079
9080 /* First insn is HA, second is LO. */
9081 insn = *stub++;
9082 insn |= ((relocation + 0x8000) >> 16) & 0xffff;
9083 bfd_put_32 (input_bfd, insn, contents + insn_offset);
9084 insn_offset += 4;
9085
9086 insn = *stub++;
9087 insn |= relocation & 0xffff;
9088 bfd_put_32 (input_bfd, insn, contents + insn_offset);
9089 insn_offset += 4;
9090 size -= 2;
9091
9092 while (size != 0)
9093 {
9094 insn = *stub++;
9095 --size;
9096 bfd_put_32 (input_bfd, insn, contents + insn_offset);
9097 insn_offset += 4;
9098 }
9099
9100 /* Rewrite the reloc and convert one of the trailing nop
9101 relocs to describe this relocation. */
9102 BFD_ASSERT (ELF32_R_TYPE (relend[-1].r_info) == R_PPC_NONE);
9103 /* The relocs are at the bottom 2 bytes */
9104 wrel->r_offset = rel->r_offset + d_offset;
9105 wrel->r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_HA);
9106 wrel->r_addend = rel->r_addend;
9107 memmove (wrel + 1, wrel, (relend - wrel - 1) * sizeof (*wrel));
9108 wrel++, rel++;
9109 wrel->r_offset += 4;
9110 wrel->r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_LO);
9111 }
9112 continue;
9113
9114 /* Indirect .sdata relocation. */
9115 case R_PPC_EMB_SDAI16:
9116 BFD_ASSERT (htab->sdata[0].section != NULL);
9117 if (!is_static_defined (htab->sdata[0].sym))
9118 {
9119 unresolved_reloc = TRUE;
9120 break;
9121 }
9122 relocation
9123 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[0],
9124 h, relocation, rel);
9125 addend = 0;
9126 break;
9127
9128 /* Indirect .sdata2 relocation. */
9129 case R_PPC_EMB_SDA2I16:
9130 BFD_ASSERT (htab->sdata[1].section != NULL);
9131 if (!is_static_defined (htab->sdata[1].sym))
9132 {
9133 unresolved_reloc = TRUE;
9134 break;
9135 }
9136 relocation
9137 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[1],
9138 h, relocation, rel);
9139 addend = 0;
9140 break;
9141
9142 /* Handle the TOC16 reloc. We want to use the offset within the .got
9143 section, not the actual VMA. This is appropriate when generating
9144 an embedded ELF object, for which the .got section acts like the
9145 AIX .toc section. */
9146 case R_PPC_TOC16: /* phony GOT16 relocations */
9147 if (sec == NULL || sec->output_section == NULL)
9148 {
9149 unresolved_reloc = TRUE;
9150 break;
9151 }
9152 BFD_ASSERT (strcmp (bfd_get_section_name (sec->owner, sec),
9153 ".got") == 0
9154 || strcmp (bfd_get_section_name (sec->owner, sec),
9155 ".cgot") == 0);
9156
9157 addend -= sec->output_section->vma + sec->output_offset + 0x8000;
9158 break;
9159
9160 case R_PPC_PLTREL24:
9161 if (h != NULL && ifunc == NULL)
9162 {
9163 struct plt_entry *ent;
9164
9165 ent = find_plt_ent (&h->plt.plist, got2,
9166 bfd_link_pic (info) ? addend : 0);
9167 if (ent == NULL
9168 || htab->elf.splt == NULL)
9169 {
9170 /* We didn't make a PLT entry for this symbol. This
9171 happens when statically linking PIC code, or when
9172 using -Bsymbolic. */
9173 }
9174 else
9175 {
9176 /* Relocation is to the entry for this symbol in the
9177 procedure linkage table. */
9178 unresolved_reloc = FALSE;
9179 if (htab->plt_type == PLT_NEW)
9180 relocation = (htab->glink->output_section->vma
9181 + htab->glink->output_offset
9182 + ent->glink_offset);
9183 else
9184 relocation = (htab->elf.splt->output_section->vma
9185 + htab->elf.splt->output_offset
9186 + ent->plt.offset);
9187 }
9188 }
9189
9190 /* R_PPC_PLTREL24 is rather special. If non-zero, the
9191 addend specifies the GOT pointer offset within .got2.
9192 Don't apply it to the relocation field. */
9193 addend = 0;
9194 break;
9195
9196 /* Relocate against _SDA_BASE_. */
9197 case R_PPC_SDAREL16:
9198 {
9199 const char *name;
9200 struct elf_link_hash_entry *sda = htab->sdata[0].sym;
9201
9202 if (sec == NULL
9203 || sec->output_section == NULL
9204 || !is_static_defined (sda))
9205 {
9206 unresolved_reloc = TRUE;
9207 break;
9208 }
9209 addend -= SYM_VAL (sda);
9210
9211 name = bfd_get_section_name (output_bfd, sec->output_section);
9212 if (!(strcmp (name, ".sdata") == 0
9213 || strcmp (name, ".sbss") == 0))
9214 {
9215 info->callbacks->einfo
9216 /* xgettext:c-format */
9217 (_("%P: %B: the target (%s) of a %s relocation is "
9218 "in the wrong output section (%s)\n"),
9219 input_bfd,
9220 sym_name,
9221 howto->name,
9222 name);
9223 }
9224 }
9225 break;
9226
9227 /* Relocate against _SDA2_BASE_. */
9228 case R_PPC_EMB_SDA2REL:
9229 {
9230 const char *name;
9231 struct elf_link_hash_entry *sda = htab->sdata[1].sym;
9232
9233 if (sec == NULL
9234 || sec->output_section == NULL
9235 || !is_static_defined (sda))
9236 {
9237 unresolved_reloc = TRUE;
9238 break;
9239 }
9240 addend -= SYM_VAL (sda);
9241
9242 name = bfd_get_section_name (output_bfd, sec->output_section);
9243 if (!(strcmp (name, ".sdata2") == 0
9244 || strcmp (name, ".sbss2") == 0))
9245 {
9246 info->callbacks->einfo
9247 /* xgettext:c-format */
9248 (_("%P: %B: the target (%s) of a %s relocation is "
9249 "in the wrong output section (%s)\n"),
9250 input_bfd,
9251 sym_name,
9252 howto->name,
9253 name);
9254 }
9255 }
9256 break;
9257
9258 case R_PPC_VLE_LO16A:
9259 relocation = relocation + addend;
9260 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9261 contents + rel->r_offset, relocation,
9262 split16a_type, htab->params->vle_reloc_fixup);
9263 goto copy_reloc;
9264
9265 case R_PPC_VLE_LO16D:
9266 relocation = relocation + addend;
9267 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9268 contents + rel->r_offset, relocation,
9269 split16d_type, htab->params->vle_reloc_fixup);
9270 goto copy_reloc;
9271
9272 case R_PPC_VLE_HI16A:
9273 relocation = (relocation + addend) >> 16;
9274 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9275 contents + rel->r_offset, relocation,
9276 split16a_type, htab->params->vle_reloc_fixup);
9277 goto copy_reloc;
9278
9279 case R_PPC_VLE_HI16D:
9280 relocation = (relocation + addend) >> 16;
9281 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9282 contents + rel->r_offset, relocation,
9283 split16d_type, htab->params->vle_reloc_fixup);
9284 goto copy_reloc;
9285
9286 case R_PPC_VLE_HA16A:
9287 relocation = (relocation + addend + 0x8000) >> 16;
9288 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9289 contents + rel->r_offset, relocation,
9290 split16a_type, htab->params->vle_reloc_fixup);
9291 goto copy_reloc;
9292
9293 case R_PPC_VLE_HA16D:
9294 relocation = (relocation + addend + 0x8000) >> 16;
9295 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9296 contents + rel->r_offset, relocation,
9297 split16d_type, htab->params->vle_reloc_fixup);
9298 goto copy_reloc;
9299
9300 /* Relocate against either _SDA_BASE_, _SDA2_BASE_, or 0. */
9301 case R_PPC_EMB_SDA21:
9302 case R_PPC_VLE_SDA21:
9303 case R_PPC_EMB_RELSDA:
9304 case R_PPC_VLE_SDA21_LO:
9305 {
9306 const char *name;
9307 int reg;
9308 unsigned int insn;
9309 struct elf_link_hash_entry *sda = NULL;
9310
9311 if (sec == NULL || sec->output_section == NULL)
9312 {
9313 unresolved_reloc = TRUE;
9314 break;
9315 }
9316
9317 name = bfd_get_section_name (output_bfd, sec->output_section);
9318 if (strcmp (name, ".sdata") == 0
9319 || strcmp (name, ".sbss") == 0)
9320 {
9321 reg = 13;
9322 sda = htab->sdata[0].sym;
9323 }
9324 else if (strcmp (name, ".sdata2") == 0
9325 || strcmp (name, ".sbss2") == 0)
9326 {
9327 reg = 2;
9328 sda = htab->sdata[1].sym;
9329 }
9330 else if (strcmp (name, ".PPC.EMB.sdata0") == 0
9331 || strcmp (name, ".PPC.EMB.sbss0") == 0)
9332 {
9333 reg = 0;
9334 }
9335 else
9336 {
9337 info->callbacks->einfo
9338 /* xgettext:c-format */
9339 (_("%P: %B: the target (%s) of a %s relocation is "
9340 "in the wrong output section (%s)\n"),
9341 input_bfd,
9342 sym_name,
9343 howto->name,
9344 name);
9345
9346 bfd_set_error (bfd_error_bad_value);
9347 ret = FALSE;
9348 goto copy_reloc;
9349 }
9350
9351 if (sda != NULL)
9352 {
9353 if (!is_static_defined (sda))
9354 {
9355 unresolved_reloc = TRUE;
9356 break;
9357 }
9358 addend -= SYM_VAL (sda);
9359 }
9360
9361 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
9362 if (reg == 0
9363 && (r_type == R_PPC_VLE_SDA21
9364 || r_type == R_PPC_VLE_SDA21_LO))
9365 {
9366 relocation = relocation + addend;
9367 addend = 0;
9368
9369 /* Force e_li insn, keeping RT from original insn. */
9370 insn &= 0x1f << 21;
9371 insn |= 28u << 26;
9372
9373 /* We have an li20 field, bits 17..20, 11..15, 21..31. */
9374 /* Top 4 bits of value to 17..20. */
9375 insn |= (relocation & 0xf0000) >> 5;
9376 /* Next 5 bits of the value to 11..15. */
9377 insn |= (relocation & 0xf800) << 5;
9378 /* And the final 11 bits of the value to bits 21 to 31. */
9379 insn |= relocation & 0x7ff;
9380
9381 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
9382
9383 if (r_type == R_PPC_VLE_SDA21
9384 && ((relocation + 0x80000) & 0xffffffff) > 0x100000)
9385 goto overflow;
9386 goto copy_reloc;
9387 }
9388 else if (r_type == R_PPC_EMB_SDA21
9389 || r_type == R_PPC_VLE_SDA21
9390 || r_type == R_PPC_VLE_SDA21_LO)
9391 {
9392 /* Fill in register field. */
9393 insn = (insn & ~RA_REGISTER_MASK) | (reg << RA_REGISTER_SHIFT);
9394 }
9395 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
9396 }
9397 break;
9398
9399 case R_PPC_VLE_SDAREL_LO16A:
9400 case R_PPC_VLE_SDAREL_LO16D:
9401 case R_PPC_VLE_SDAREL_HI16A:
9402 case R_PPC_VLE_SDAREL_HI16D:
9403 case R_PPC_VLE_SDAREL_HA16A:
9404 case R_PPC_VLE_SDAREL_HA16D:
9405 {
9406 bfd_vma value;
9407 const char *name;
9408 struct elf_link_hash_entry *sda = NULL;
9409
9410 if (sec == NULL || sec->output_section == NULL)
9411 {
9412 unresolved_reloc = TRUE;
9413 break;
9414 }
9415
9416 name = bfd_get_section_name (output_bfd, sec->output_section);
9417 if (strcmp (name, ".sdata") == 0
9418 || strcmp (name, ".sbss") == 0)
9419 sda = htab->sdata[0].sym;
9420 else if (strcmp (name, ".sdata2") == 0
9421 || strcmp (name, ".sbss2") == 0)
9422 sda = htab->sdata[1].sym;
9423 else
9424 {
9425 _bfd_error_handler
9426 /* xgettext:c-format */
9427 (_("%B: the target (%s) of a %s relocation is "
9428 "in the wrong output section (%s)"),
9429 input_bfd,
9430 sym_name,
9431 howto->name,
9432 name);
9433
9434 bfd_set_error (bfd_error_bad_value);
9435 ret = FALSE;
9436 goto copy_reloc;
9437 }
9438
9439 if (sda == NULL || !is_static_defined (sda))
9440 {
9441 unresolved_reloc = TRUE;
9442 break;
9443 }
9444 value = relocation + addend - SYM_VAL (sda);
9445
9446 if (r_type == R_PPC_VLE_SDAREL_LO16A)
9447 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9448 contents + rel->r_offset, value,
9449 split16a_type,
9450 htab->params->vle_reloc_fixup);
9451 else if (r_type == R_PPC_VLE_SDAREL_LO16D)
9452 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9453 contents + rel->r_offset, value,
9454 split16d_type,
9455 htab->params->vle_reloc_fixup);
9456 else if (r_type == R_PPC_VLE_SDAREL_HI16A)
9457 {
9458 value = value >> 16;
9459 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9460 contents + rel->r_offset, value,
9461 split16a_type,
9462 htab->params->vle_reloc_fixup);
9463 }
9464 else if (r_type == R_PPC_VLE_SDAREL_HI16D)
9465 {
9466 value = value >> 16;
9467 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9468 contents + rel->r_offset, value,
9469 split16d_type,
9470 htab->params->vle_reloc_fixup);
9471 }
9472 else if (r_type == R_PPC_VLE_SDAREL_HA16A)
9473 {
9474 value = (value + 0x8000) >> 16;
9475 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9476 contents + rel->r_offset, value,
9477 split16a_type,
9478 htab->params->vle_reloc_fixup);
9479 }
9480 else if (r_type == R_PPC_VLE_SDAREL_HA16D)
9481 {
9482 value = (value + 0x8000) >> 16;
9483 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9484 contents + rel->r_offset, value,
9485 split16d_type,
9486 htab->params->vle_reloc_fixup);
9487 }
9488 }
9489 goto copy_reloc;
9490
9491 /* Relocate against the beginning of the section. */
9492 case R_PPC_SECTOFF:
9493 case R_PPC_SECTOFF_LO:
9494 case R_PPC_SECTOFF_HI:
9495 case R_PPC_SECTOFF_HA:
9496 if (sec == NULL || sec->output_section == NULL)
9497 {
9498 unresolved_reloc = TRUE;
9499 break;
9500 }
9501 addend -= sec->output_section->vma;
9502 break;
9503
9504 /* Negative relocations. */
9505 case R_PPC_EMB_NADDR32:
9506 case R_PPC_EMB_NADDR16:
9507 case R_PPC_EMB_NADDR16_LO:
9508 case R_PPC_EMB_NADDR16_HI:
9509 case R_PPC_EMB_NADDR16_HA:
9510 addend -= 2 * relocation;
9511 break;
9512
9513 case R_PPC_COPY:
9514 case R_PPC_GLOB_DAT:
9515 case R_PPC_JMP_SLOT:
9516 case R_PPC_RELATIVE:
9517 case R_PPC_IRELATIVE:
9518 case R_PPC_PLT32:
9519 case R_PPC_PLTREL32:
9520 case R_PPC_PLT16_LO:
9521 case R_PPC_PLT16_HI:
9522 case R_PPC_PLT16_HA:
9523 case R_PPC_ADDR30:
9524 case R_PPC_EMB_RELSEC16:
9525 case R_PPC_EMB_RELST_LO:
9526 case R_PPC_EMB_RELST_HI:
9527 case R_PPC_EMB_RELST_HA:
9528 case R_PPC_EMB_BIT_FLD:
9529 info->callbacks->einfo
9530 /* xgettext:c-format */
9531 (_("%P: %B: relocation %s is not yet supported for symbol %s\n"),
9532 input_bfd,
9533 howto->name,
9534 sym_name);
9535
9536 bfd_set_error (bfd_error_invalid_operation);
9537 ret = FALSE;
9538 goto copy_reloc;
9539 }
9540
9541 /* Do any further special processing. */
9542 switch (r_type)
9543 {
9544 default:
9545 break;
9546
9547 case R_PPC_ADDR16_HA:
9548 case R_PPC_REL16_HA:
9549 case R_PPC_REL16DX_HA:
9550 case R_PPC_SECTOFF_HA:
9551 case R_PPC_TPREL16_HA:
9552 case R_PPC_DTPREL16_HA:
9553 case R_PPC_EMB_NADDR16_HA:
9554 case R_PPC_EMB_RELST_HA:
9555 /* It's just possible that this symbol is a weak symbol
9556 that's not actually defined anywhere. In that case,
9557 'sec' would be NULL, and we should leave the symbol
9558 alone (it will be set to zero elsewhere in the link). */
9559 if (sec == NULL)
9560 break;
9561 /* Fall through. */
9562
9563 case R_PPC_PLT16_HA:
9564 case R_PPC_GOT16_HA:
9565 case R_PPC_GOT_TLSGD16_HA:
9566 case R_PPC_GOT_TLSLD16_HA:
9567 case R_PPC_GOT_TPREL16_HA:
9568 case R_PPC_GOT_DTPREL16_HA:
9569 /* Add 0x10000 if sign bit in 0:15 is set.
9570 Bits 0:15 are not used. */
9571 addend += 0x8000;
9572 break;
9573
9574 case R_PPC_ADDR16:
9575 case R_PPC_ADDR16_LO:
9576 case R_PPC_GOT16:
9577 case R_PPC_GOT16_LO:
9578 case R_PPC_SDAREL16:
9579 case R_PPC_SECTOFF:
9580 case R_PPC_SECTOFF_LO:
9581 case R_PPC_DTPREL16:
9582 case R_PPC_DTPREL16_LO:
9583 case R_PPC_TPREL16:
9584 case R_PPC_TPREL16_LO:
9585 case R_PPC_GOT_TLSGD16:
9586 case R_PPC_GOT_TLSGD16_LO:
9587 case R_PPC_GOT_TLSLD16:
9588 case R_PPC_GOT_TLSLD16_LO:
9589 case R_PPC_GOT_DTPREL16:
9590 case R_PPC_GOT_DTPREL16_LO:
9591 case R_PPC_GOT_TPREL16:
9592 case R_PPC_GOT_TPREL16_LO:
9593 {
9594 /* The 32-bit ABI lacks proper relocations to deal with
9595 certain 64-bit instructions. Prevent damage to bits
9596 that make up part of the insn opcode. */
9597 unsigned int insn, mask, lobit;
9598
9599 insn = bfd_get_32 (input_bfd,
9600 contents + rel->r_offset - d_offset);
9601 mask = 0;
9602 if (is_insn_ds_form (insn))
9603 mask = 3;
9604 else if (is_insn_dq_form (insn))
9605 mask = 15;
9606 else
9607 break;
9608 relocation += addend;
9609 addend = insn & mask;
9610 lobit = mask & relocation;
9611 if (lobit != 0)
9612 {
9613 relocation ^= lobit;
9614 info->callbacks->einfo
9615 /* xgettext:c-format */
9616 (_("%H: error: %s against `%s' not a multiple of %u\n"),
9617 input_bfd, input_section, rel->r_offset,
9618 howto->name, sym_name, mask + 1);
9619 bfd_set_error (bfd_error_bad_value);
9620 ret = FALSE;
9621 }
9622 }
9623 break;
9624 }
9625
9626#ifdef DEBUG
9627 fprintf (stderr, "\ttype = %s (%d), name = %s, symbol index = %ld, "
9628 "offset = %ld, addend = %ld\n",
9629 howto->name,
9630 (int) r_type,
9631 sym_name,
9632 r_symndx,
9633 (long) rel->r_offset,
9634 (long) addend);
9635#endif
9636
9637 if (unresolved_reloc
9638 && !((input_section->flags & SEC_DEBUGGING) != 0
9639 && h->def_dynamic)
9640 && _bfd_elf_section_offset (output_bfd, info, input_section,
9641 rel->r_offset) != (bfd_vma) -1)
9642 {
9643 info->callbacks->einfo
9644 /* xgettext:c-format */
9645 (_("%H: unresolvable %s relocation against symbol `%s'\n"),
9646 input_bfd, input_section, rel->r_offset,
9647 howto->name,
9648 sym_name);
9649 ret = FALSE;
9650 }
9651
9652 /* 16-bit fields in insns mostly have signed values, but a
9653 few insns have 16-bit unsigned values. Really, we should
9654 have different reloc types. */
9655 if (howto->complain_on_overflow != complain_overflow_dont
9656 && howto->dst_mask == 0xffff
9657 && (input_section->flags & SEC_CODE) != 0)
9658 {
9659 enum complain_overflow complain = complain_overflow_signed;
9660
9661 if ((elf_section_flags (input_section) & SHF_PPC_VLE) == 0)
9662 {
9663 unsigned int insn;
9664
9665 insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
9666 if ((insn & (0x3f << 26)) == 10u << 26 /* cmpli */)
9667 complain = complain_overflow_bitfield;
9668 else if ((insn & (0x3f << 26)) == 28u << 26 /* andi */
9669 || (insn & (0x3f << 26)) == 24u << 26 /* ori */
9670 || (insn & (0x3f << 26)) == 26u << 26 /* xori */)
9671 complain = complain_overflow_unsigned;
9672 }
9673 if (howto->complain_on_overflow != complain)
9674 {
9675 alt_howto = *howto;
9676 alt_howto.complain_on_overflow = complain;
9677 howto = &alt_howto;
9678 }
9679 }
9680
9681 if (r_type == R_PPC_REL16DX_HA)
9682 {
9683 /* Split field reloc isn't handled by _bfd_final_link_relocate. */
9684 if (rel->r_offset + 4 > input_section->size)
9685 r = bfd_reloc_outofrange;
9686 else
9687 {
9688 unsigned int insn;
9689
9690 relocation += addend;
9691 relocation -= (rel->r_offset
9692 + input_section->output_offset
9693 + input_section->output_section->vma);
9694 relocation >>= 16;
9695 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
9696 insn &= ~0x1fffc1;
9697 insn |= (relocation & 0xffc1) | ((relocation & 0x3e) << 15);
9698 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
9699 r = bfd_reloc_ok;
9700 }
9701 }
9702 else
9703 r = _bfd_final_link_relocate (howto, input_bfd, input_section, contents,
9704 rel->r_offset, relocation, addend);
9705
9706 if (r != bfd_reloc_ok)
9707 {
9708 if (r == bfd_reloc_overflow)
9709 {
9710 overflow:
9711 /* On code like "if (foo) foo();" don't report overflow
9712 on a branch to zero when foo is undefined. */
9713 if (!warned
9714 && !(h != NULL
9715 && (h->root.type == bfd_link_hash_undefweak
9716 || h->root.type == bfd_link_hash_undefined)
9717 && is_branch_reloc (r_type)))
9718 info->callbacks->reloc_overflow
9719 (info, (h ? &h->root : NULL), sym_name, howto->name,
9720 rel->r_addend, input_bfd, input_section, rel->r_offset);
9721 }
9722 else
9723 {
9724 info->callbacks->einfo
9725 /* xgettext:c-format */
9726 (_("%H: %s reloc against `%s': error %d\n"),
9727 input_bfd, input_section, rel->r_offset,
9728 howto->name, sym_name, (int) r);
9729 ret = FALSE;
9730 }
9731 }
9732 copy_reloc:
9733 if (wrel != rel)
9734 *wrel = *rel;
9735 }
9736
9737 if (wrel != rel)
9738 {
9739 Elf_Internal_Shdr *rel_hdr;
9740 size_t deleted = rel - wrel;
9741
9742 rel_hdr = _bfd_elf_single_rel_hdr (input_section->output_section);
9743 rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted;
9744 if (rel_hdr->sh_size == 0)
9745 {
9746 /* It is too late to remove an empty reloc section. Leave
9747 one NONE reloc.
9748 ??? What is wrong with an empty section??? */
9749 rel_hdr->sh_size = rel_hdr->sh_entsize;
9750 deleted -= 1;
9751 wrel++;
9752 }
9753 relend = wrel;
9754 rel_hdr = _bfd_elf_single_rel_hdr (input_section);
9755 rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted;
9756 input_section->reloc_count -= deleted;
9757 }
9758
9759#ifdef DEBUG
9760 fprintf (stderr, "\n");
9761#endif
9762
9763 if (input_section->sec_info_type == SEC_INFO_TYPE_TARGET
9764 && input_section->size != input_section->rawsize
9765 && (strcmp (input_section->output_section->name, ".init") == 0
9766 || strcmp (input_section->output_section->name, ".fini") == 0))
9767 {
9768 /* Branch around the trampolines. */
9769 unsigned int insn = B + input_section->size - input_section->rawsize;
9770 bfd_put_32 (input_bfd, insn, contents + input_section->rawsize);
9771 }
9772
9773 if (htab->params->ppc476_workaround
9774 && input_section->sec_info_type == SEC_INFO_TYPE_TARGET
9775 && (!bfd_link_relocatable (info)
9776 || (input_section->output_section->alignment_power
9777 >= htab->params->pagesize_p2)))
9778 {
9779 bfd_vma start_addr, end_addr, addr;
9780 bfd_vma pagesize = (bfd_vma) 1 << htab->params->pagesize_p2;
9781
9782 if (relax_info->workaround_size != 0)
9783 {
9784 bfd_byte *p;
9785 unsigned int n;
9786 bfd_byte fill[4];
9787
9788 bfd_put_32 (input_bfd, BA, fill);
9789 p = contents + input_section->size - relax_info->workaround_size;
9790 n = relax_info->workaround_size >> 2;
9791 while (n--)
9792 {
9793 memcpy (p, fill, 4);
9794 p += 4;
9795 }
9796 }
9797
9798 /* The idea is: Replace the last instruction on a page with a
9799 branch to a patch area. Put the insn there followed by a
9800 branch back to the next page. Complicated a little by
9801 needing to handle moved conditional branches, and by not
9802 wanting to touch data-in-text. */
9803
9804 start_addr = (input_section->output_section->vma
9805 + input_section->output_offset);
9806 end_addr = (start_addr + input_section->size
9807 - relax_info->workaround_size);
9808 for (addr = ((start_addr & -pagesize) + pagesize - 4);
9809 addr < end_addr;
9810 addr += pagesize)
9811 {
9812 bfd_vma offset = addr - start_addr;
9813 Elf_Internal_Rela *lo, *hi;
9814 bfd_boolean is_data;
9815 bfd_vma patch_off, patch_addr;
9816 unsigned int insn;
9817
9818 /* Do we have a data reloc at this offset? If so, leave
9819 the word alone. */
9820 is_data = FALSE;
9821 lo = relocs;
9822 hi = relend;
9823 rel = NULL;
9824 while (lo < hi)
9825 {
9826 rel = lo + (hi - lo) / 2;
9827 if (rel->r_offset < offset)
9828 lo = rel + 1;
9829 else if (rel->r_offset > offset + 3)
9830 hi = rel;
9831 else
9832 {
9833 switch (ELF32_R_TYPE (rel->r_info))
9834 {
9835 case R_PPC_ADDR32:
9836 case R_PPC_UADDR32:
9837 case R_PPC_REL32:
9838 case R_PPC_ADDR30:
9839 is_data = TRUE;
9840 break;
9841 default:
9842 break;
9843 }
9844 break;
9845 }
9846 }
9847 if (is_data)
9848 continue;
9849
9850 /* Some instructions can be left alone too. Unconditional
9851 branches, except for bcctr with BO=0x14 (bctr, bctrl),
9852 avoid the icache failure.
9853
9854 The problem occurs due to prefetch across a page boundary
9855 where stale instructions can be fetched from the next
9856 page, and the mechanism for flushing these bad
9857 instructions fails under certain circumstances. The
9858 unconditional branches:
9859 1) Branch: b, bl, ba, bla,
9860 2) Branch Conditional: bc, bca, bcl, bcla,
9861 3) Branch Conditional to Link Register: bclr, bclrl,
9862 where (2) and (3) have BO=0x14 making them unconditional,
9863 prevent the bad prefetch because the prefetch itself is
9864 affected by these instructions. This happens even if the
9865 instruction is not executed.
9866
9867 A bctr example:
9868 .
9869 . lis 9,new_page@ha
9870 . addi 9,9,new_page@l
9871 . mtctr 9
9872 . bctr
9873 . nop
9874 . nop
9875 . new_page:
9876 .
9877 The bctr is not predicted taken due to ctr not being
9878 ready, so prefetch continues on past the bctr into the
9879 new page which might have stale instructions. If they
9880 fail to be flushed, then they will be executed after the
9881 bctr executes. Either of the following modifications
9882 prevent the bad prefetch from happening in the first
9883 place:
9884 .
9885 . lis 9,new_page@ha lis 9,new_page@ha
9886 . addi 9,9,new_page@l addi 9,9,new_page@l
9887 . mtctr 9 mtctr 9
9888 . bctr bctr
9889 . nop b somewhere_else
9890 . b somewhere_else nop
9891 . new_page: new_page:
9892 . */
9893 insn = bfd_get_32 (input_bfd, contents + offset);
9894 if ((insn & (0x3f << 26)) == (18u << 26) /* b,bl,ba,bla */
9895 || ((insn & (0x3f << 26)) == (16u << 26) /* bc,bcl,bca,bcla*/
9896 && (insn & (0x14 << 21)) == (0x14 << 21)) /* with BO=0x14 */
9897 || ((insn & (0x3f << 26)) == (19u << 26)
9898 && (insn & (0x3ff << 1)) == (16u << 1) /* bclr,bclrl */
9899 && (insn & (0x14 << 21)) == (0x14 << 21)))/* with BO=0x14 */
9900 continue;
9901
9902 patch_addr = (start_addr + input_section->size
9903 - relax_info->workaround_size);
9904 patch_addr = (patch_addr + 15) & -16;
9905 patch_off = patch_addr - start_addr;
9906 bfd_put_32 (input_bfd, B + patch_off - offset, contents + offset);
9907
9908 if (rel != NULL
9909 && rel->r_offset >= offset
9910 && rel->r_offset < offset + 4)
9911 {
9912 asection *sreloc;
9913
9914 /* If the insn we are patching had a reloc, adjust the
9915 reloc r_offset so that the reloc applies to the moved
9916 location. This matters for -r and --emit-relocs. */
9917 if (rel + 1 != relend)
9918 {
9919 Elf_Internal_Rela tmp = *rel;
9920
9921 /* Keep the relocs sorted by r_offset. */
9922 memmove (rel, rel + 1, (relend - (rel + 1)) * sizeof (*rel));
9923 relend[-1] = tmp;
9924 }
9925 relend[-1].r_offset += patch_off - offset;
9926
9927 /* Adjust REL16 addends too. */
9928 switch (ELF32_R_TYPE (relend[-1].r_info))
9929 {
9930 case R_PPC_REL16:
9931 case R_PPC_REL16_LO:
9932 case R_PPC_REL16_HI:
9933 case R_PPC_REL16_HA:
9934 relend[-1].r_addend += patch_off - offset;
9935 break;
9936 default:
9937 break;
9938 }
9939
9940 /* If we are building a PIE or shared library with
9941 non-PIC objects, perhaps we had a dynamic reloc too?
9942 If so, the dynamic reloc must move with the insn. */
9943 sreloc = elf_section_data (input_section)->sreloc;
9944 if (sreloc != NULL)
9945 {
9946 Elf32_External_Rela *slo, *shi, *srelend;
9947 bfd_vma soffset;
9948
9949 slo = (Elf32_External_Rela *) sreloc->contents;
9950 shi = srelend = slo + sreloc->reloc_count;
9951 soffset = (offset + input_section->output_section->vma
9952 + input_section->output_offset);
9953 while (slo < shi)
9954 {
9955 Elf32_External_Rela *srel = slo + (shi - slo) / 2;
9956 bfd_elf32_swap_reloca_in (output_bfd, (bfd_byte *) srel,
9957 &outrel);
9958 if (outrel.r_offset < soffset)
9959 slo = srel + 1;
9960 else if (outrel.r_offset > soffset + 3)
9961 shi = srel;
9962 else
9963 {
9964 if (srel + 1 != srelend)
9965 {
9966 memmove (srel, srel + 1,
9967 (srelend - (srel + 1)) * sizeof (*srel));
9968 srel = srelend - 1;
9969 }
9970 outrel.r_offset += patch_off - offset;
9971 bfd_elf32_swap_reloca_out (output_bfd, &outrel,
9972 (bfd_byte *) srel);
9973 break;
9974 }
9975 }
9976 }
9977 }
9978 else
9979 rel = NULL;
9980
9981 if ((insn & (0x3f << 26)) == (16u << 26) /* bc */
9982 && (insn & 2) == 0 /* relative */)
9983 {
9984 bfd_vma delta = ((insn & 0xfffc) ^ 0x8000) - 0x8000;
9985
9986 delta += offset - patch_off;
9987 if (bfd_link_relocatable (info) && rel != NULL)
9988 delta = 0;
9989 if (!bfd_link_relocatable (info) && rel != NULL)
9990 {
9991 enum elf_ppc_reloc_type r_type;
9992
9993 r_type = ELF32_R_TYPE (relend[-1].r_info);
9994 if (r_type == R_PPC_REL14_BRTAKEN)
9995 insn |= BRANCH_PREDICT_BIT;
9996 else if (r_type == R_PPC_REL14_BRNTAKEN)
9997 insn &= ~BRANCH_PREDICT_BIT;
9998 else
9999 BFD_ASSERT (r_type == R_PPC_REL14);
10000
10001 if ((r_type == R_PPC_REL14_BRTAKEN
10002 || r_type == R_PPC_REL14_BRNTAKEN)
10003 && delta + 0x8000 < 0x10000
10004 && (bfd_signed_vma) delta < 0)
10005 insn ^= BRANCH_PREDICT_BIT;
10006 }
10007 if (delta + 0x8000 < 0x10000)
10008 {
10009 bfd_put_32 (input_bfd,
10010 (insn & ~0xfffc) | (delta & 0xfffc),
10011 contents + patch_off);
10012 patch_off += 4;
10013 bfd_put_32 (input_bfd,
10014 B | ((offset + 4 - patch_off) & 0x3fffffc),
10015 contents + patch_off);
10016 patch_off += 4;
10017 }
10018 else
10019 {
10020 if (rel != NULL)
10021 {
10022 unsigned int r_sym = ELF32_R_SYM (relend[-1].r_info);
10023
10024 relend[-1].r_offset += 8;
10025 relend[-1].r_info = ELF32_R_INFO (r_sym, R_PPC_REL24);
10026 }
10027 bfd_put_32 (input_bfd,
10028 (insn & ~0xfffc) | 8,
10029 contents + patch_off);
10030 patch_off += 4;
10031 bfd_put_32 (input_bfd,
10032 B | ((offset + 4 - patch_off) & 0x3fffffc),
10033 contents + patch_off);
10034 patch_off += 4;
10035 bfd_put_32 (input_bfd,
10036 B | ((delta - 8) & 0x3fffffc),
10037 contents + patch_off);
10038 patch_off += 4;
10039 }
10040 }
10041 else
10042 {
10043 bfd_put_32 (input_bfd, insn, contents + patch_off);
10044 patch_off += 4;
10045 bfd_put_32 (input_bfd,
10046 B | ((offset + 4 - patch_off) & 0x3fffffc),
10047 contents + patch_off);
10048 patch_off += 4;
10049 }
10050 BFD_ASSERT (patch_off <= input_section->size);
10051 relax_info->workaround_size = input_section->size - patch_off;
10052 }
10053 }
10054
10055 return ret;
10056}
10057\f
10058/* Finish up dynamic symbol handling. We set the contents of various
10059 dynamic sections here. */
10060
10061static bfd_boolean
10062ppc_elf_finish_dynamic_symbol (bfd *output_bfd,
10063 struct bfd_link_info *info,
10064 struct elf_link_hash_entry *h,
10065 Elf_Internal_Sym *sym)
10066{
10067 struct ppc_elf_link_hash_table *htab;
10068 struct plt_entry *ent;
10069 bfd_boolean doneone;
10070
10071#ifdef DEBUG
10072 fprintf (stderr, "ppc_elf_finish_dynamic_symbol called for %s",
10073 h->root.root.string);
10074#endif
10075
10076 htab = ppc_elf_hash_table (info);
10077 BFD_ASSERT (htab->elf.dynobj != NULL);
10078
10079 doneone = FALSE;
10080 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
10081 if (ent->plt.offset != (bfd_vma) -1)
10082 {
10083 if (!doneone)
10084 {
10085 Elf_Internal_Rela rela;
10086 bfd_byte *loc;
10087 bfd_vma reloc_index;
10088
10089 if (htab->plt_type == PLT_NEW
10090 || !htab->elf.dynamic_sections_created
10091 || h->dynindx == -1)
10092 reloc_index = ent->plt.offset / 4;
10093 else
10094 {
10095 reloc_index = ((ent->plt.offset - htab->plt_initial_entry_size)
10096 / htab->plt_slot_size);
10097 if (reloc_index > PLT_NUM_SINGLE_ENTRIES
10098 && htab->plt_type == PLT_OLD)
10099 reloc_index -= (reloc_index - PLT_NUM_SINGLE_ENTRIES) / 2;
10100 }
10101
10102 /* This symbol has an entry in the procedure linkage table.
10103 Set it up. */
10104 if (htab->plt_type == PLT_VXWORKS
10105 && htab->elf.dynamic_sections_created
10106 && h->dynindx != -1)
10107 {
10108 bfd_vma got_offset;
10109 const bfd_vma *plt_entry;
10110
10111 /* The first three entries in .got.plt are reserved. */
10112 got_offset = (reloc_index + 3) * 4;
10113
10114 /* Use the right PLT. */
10115 plt_entry = bfd_link_pic (info) ? ppc_elf_vxworks_pic_plt_entry
10116 : ppc_elf_vxworks_plt_entry;
10117
10118 /* Fill in the .plt on VxWorks. */
10119 if (bfd_link_pic (info))
10120 {
10121 bfd_put_32 (output_bfd,
10122 plt_entry[0] | PPC_HA (got_offset),
10123 htab->elf.splt->contents + ent->plt.offset + 0);
10124 bfd_put_32 (output_bfd,
10125 plt_entry[1] | PPC_LO (got_offset),
10126 htab->elf.splt->contents + ent->plt.offset + 4);
10127 }
10128 else
10129 {
10130 bfd_vma got_loc = got_offset + SYM_VAL (htab->elf.hgot);
10131
10132 bfd_put_32 (output_bfd,
10133 plt_entry[0] | PPC_HA (got_loc),
10134 htab->elf.splt->contents + ent->plt.offset + 0);
10135 bfd_put_32 (output_bfd,
10136 plt_entry[1] | PPC_LO (got_loc),
10137 htab->elf.splt->contents + ent->plt.offset + 4);
10138 }
10139
10140 bfd_put_32 (output_bfd, plt_entry[2],
10141 htab->elf.splt->contents + ent->plt.offset + 8);
10142 bfd_put_32 (output_bfd, plt_entry[3],
10143 htab->elf.splt->contents + ent->plt.offset + 12);
10144
10145 /* This instruction is an immediate load. The value loaded is
10146 the byte offset of the R_PPC_JMP_SLOT relocation from the
10147 start of the .rela.plt section. The value is stored in the
10148 low-order 16 bits of the load instruction. */
10149 /* NOTE: It appears that this is now an index rather than a
10150 prescaled offset. */
10151 bfd_put_32 (output_bfd,
10152 plt_entry[4] | reloc_index,
10153 htab->elf.splt->contents + ent->plt.offset + 16);
10154 /* This instruction is a PC-relative branch whose target is
10155 the start of the PLT section. The address of this branch
10156 instruction is 20 bytes beyond the start of this PLT entry.
10157 The address is encoded in bits 6-29, inclusive. The value
10158 stored is right-shifted by two bits, permitting a 26-bit
10159 offset. */
10160 bfd_put_32 (output_bfd,
10161 (plt_entry[5]
10162 | (-(ent->plt.offset + 20) & 0x03fffffc)),
10163 htab->elf.splt->contents + ent->plt.offset + 20);
10164 bfd_put_32 (output_bfd, plt_entry[6],
10165 htab->elf.splt->contents + ent->plt.offset + 24);
10166 bfd_put_32 (output_bfd, plt_entry[7],
10167 htab->elf.splt->contents + ent->plt.offset + 28);
10168
10169 /* Fill in the GOT entry corresponding to this PLT slot with
10170 the address immediately after the "bctr" instruction
10171 in this PLT entry. */
10172 bfd_put_32 (output_bfd, (htab->elf.splt->output_section->vma
10173 + htab->elf.splt->output_offset
10174 + ent->plt.offset + 16),
10175 htab->elf.sgotplt->contents + got_offset);
10176
10177 if (!bfd_link_pic (info))
10178 {
10179 /* Fill in a couple of entries in .rela.plt.unloaded. */
10180 loc = htab->srelplt2->contents
10181 + ((VXWORKS_PLTRESOLVE_RELOCS + reloc_index
10182 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS)
10183 * sizeof (Elf32_External_Rela));
10184
10185 /* Provide the @ha relocation for the first instruction. */
10186 rela.r_offset = (htab->elf.splt->output_section->vma
10187 + htab->elf.splt->output_offset
10188 + ent->plt.offset + 2);
10189 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
10190 R_PPC_ADDR16_HA);
10191 rela.r_addend = got_offset;
10192 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10193 loc += sizeof (Elf32_External_Rela);
10194
10195 /* Provide the @l relocation for the second instruction. */
10196 rela.r_offset = (htab->elf.splt->output_section->vma
10197 + htab->elf.splt->output_offset
10198 + ent->plt.offset + 6);
10199 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
10200 R_PPC_ADDR16_LO);
10201 rela.r_addend = got_offset;
10202 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10203 loc += sizeof (Elf32_External_Rela);
10204
10205 /* Provide a relocation for the GOT entry corresponding to this
10206 PLT slot. Point it at the middle of the .plt entry. */
10207 rela.r_offset = (htab->elf.sgotplt->output_section->vma
10208 + htab->elf.sgotplt->output_offset
10209 + got_offset);
10210 rela.r_info = ELF32_R_INFO (htab->elf.hplt->indx,
10211 R_PPC_ADDR32);
10212 rela.r_addend = ent->plt.offset + 16;
10213 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10214 }
10215
10216 /* VxWorks uses non-standard semantics for R_PPC_JMP_SLOT.
10217 In particular, the offset for the relocation is not the
10218 address of the PLT entry for this function, as specified
10219 by the ABI. Instead, the offset is set to the address of
10220 the GOT slot for this function. See EABI 4.4.4.1. */
10221 rela.r_offset = (htab->elf.sgotplt->output_section->vma
10222 + htab->elf.sgotplt->output_offset
10223 + got_offset);
10224
10225 }
10226 else
10227 {
10228 asection *splt = htab->elf.splt;
10229 if (!htab->elf.dynamic_sections_created
10230 || h->dynindx == -1)
10231 splt = htab->elf.iplt;
10232
10233 rela.r_offset = (splt->output_section->vma
10234 + splt->output_offset
10235 + ent->plt.offset);
10236 if (htab->plt_type == PLT_OLD
10237 || !htab->elf.dynamic_sections_created
10238 || h->dynindx == -1)
10239 {
10240 /* We don't need to fill in the .plt. The ppc dynamic
10241 linker will fill it in. */
10242 }
10243 else
10244 {
10245 bfd_vma val = (htab->glink_pltresolve + ent->plt.offset
10246 + htab->glink->output_section->vma
10247 + htab->glink->output_offset);
10248 bfd_put_32 (output_bfd, val,
10249 splt->contents + ent->plt.offset);
10250 }
10251 }
10252
10253 /* Fill in the entry in the .rela.plt section. */
10254 rela.r_addend = 0;
10255 if (!htab->elf.dynamic_sections_created
10256 || h->dynindx == -1)
10257 {
10258 BFD_ASSERT (h->type == STT_GNU_IFUNC
10259 && h->def_regular
10260 && (h->root.type == bfd_link_hash_defined
10261 || h->root.type == bfd_link_hash_defweak));
10262 rela.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
10263 rela.r_addend = SYM_VAL (h);
10264 }
10265 else
10266 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_JMP_SLOT);
10267
10268 if (!htab->elf.dynamic_sections_created
10269 || h->dynindx == -1)
10270 loc = (htab->elf.irelplt->contents
10271 + (htab->elf.irelplt->reloc_count++
10272 * sizeof (Elf32_External_Rela)));
10273 else
10274 loc = (htab->elf.srelplt->contents
10275 + reloc_index * sizeof (Elf32_External_Rela));
10276 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10277
10278 if (!h->def_regular)
10279 {
10280 /* Mark the symbol as undefined, rather than as
10281 defined in the .plt section. Leave the value if
10282 there were any relocations where pointer equality
10283 matters (this is a clue for the dynamic linker, to
10284 make function pointer comparisons work between an
10285 application and shared library), otherwise set it
10286 to zero. */
10287 sym->st_shndx = SHN_UNDEF;
10288 if (!h->pointer_equality_needed)
10289 sym->st_value = 0;
10290 else if (!h->ref_regular_nonweak)
10291 {
10292 /* This breaks function pointer comparisons, but
10293 that is better than breaking tests for a NULL
10294 function pointer. */
10295 sym->st_value = 0;
10296 }
10297 }
10298 else if (h->type == STT_GNU_IFUNC
10299 && !bfd_link_pic (info))
10300 {
10301 /* Set the value of ifunc symbols in a non-pie
10302 executable to the glink entry. This is to avoid
10303 text relocations. We can't do this for ifunc in
10304 allocate_dynrelocs, as we do for normal dynamic
10305 function symbols with plt entries, because we need
10306 to keep the original value around for the ifunc
10307 relocation. */
10308 sym->st_shndx = (_bfd_elf_section_from_bfd_section
10309 (output_bfd, htab->glink->output_section));
10310 sym->st_value = (ent->glink_offset
10311 + htab->glink->output_offset
10312 + htab->glink->output_section->vma);
10313 }
10314 doneone = TRUE;
10315 }
10316
10317 if (htab->plt_type == PLT_NEW
10318 || !htab->elf.dynamic_sections_created
10319 || h->dynindx == -1)
10320 {
10321 unsigned char *p;
10322 asection *splt = htab->elf.splt;
10323 if (!htab->elf.dynamic_sections_created
10324 || h->dynindx == -1)
10325 splt = htab->elf.iplt;
10326
10327 p = (unsigned char *) htab->glink->contents + ent->glink_offset;
10328
10329 if (h == htab->tls_get_addr && !htab->params->no_tls_get_addr_opt)
10330 {
10331 bfd_put_32 (output_bfd, LWZ_11_3, p);
10332 p += 4;
10333 bfd_put_32 (output_bfd, LWZ_12_3 + 4, p);
10334 p += 4;
10335 bfd_put_32 (output_bfd, MR_0_3, p);
10336 p += 4;
10337 bfd_put_32 (output_bfd, CMPWI_11_0, p);
10338 p += 4;
10339 bfd_put_32 (output_bfd, ADD_3_12_2, p);
10340 p += 4;
10341 bfd_put_32 (output_bfd, BEQLR, p);
10342 p += 4;
10343 bfd_put_32 (output_bfd, MR_3_0, p);
10344 p += 4;
10345 bfd_put_32 (output_bfd, NOP, p);
10346 p += 4;
10347 }
10348
10349 write_glink_stub (ent, splt, p, info);
10350
10351 if (!bfd_link_pic (info))
10352 /* We only need one non-PIC glink stub. */
10353 break;
10354 }
10355 else
10356 break;
10357 }
10358
10359 if (h->needs_copy)
10360 {
10361 asection *s;
10362 Elf_Internal_Rela rela;
10363 bfd_byte *loc;
10364
10365 /* This symbols needs a copy reloc. Set it up. */
10366
10367#ifdef DEBUG
10368 fprintf (stderr, ", copy");
10369#endif
10370
10371 BFD_ASSERT (h->dynindx != -1);
10372
10373 if (ppc_elf_hash_entry (h)->has_sda_refs)
10374 s = htab->relsbss;
10375 else if (h->root.u.def.section == htab->elf.sdynrelro)
10376 s = htab->elf.sreldynrelro;
10377 else
10378 s = htab->elf.srelbss;
10379 BFD_ASSERT (s != NULL);
10380
10381 rela.r_offset = SYM_VAL (h);
10382 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_COPY);
10383 rela.r_addend = 0;
10384 loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
10385 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10386 }
10387
10388#ifdef DEBUG
10389 fprintf (stderr, "\n");
10390#endif
10391
10392 return TRUE;
10393}
10394\f
10395static enum elf_reloc_type_class
10396ppc_elf_reloc_type_class (const struct bfd_link_info *info,
10397 const asection *rel_sec,
10398 const Elf_Internal_Rela *rela)
10399{
10400 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
10401
10402 if (rel_sec == htab->elf.irelplt)
10403 return reloc_class_ifunc;
10404
10405 switch (ELF32_R_TYPE (rela->r_info))
10406 {
10407 case R_PPC_RELATIVE:
10408 return reloc_class_relative;
10409 case R_PPC_JMP_SLOT:
10410 return reloc_class_plt;
10411 case R_PPC_COPY:
10412 return reloc_class_copy;
10413 default:
10414 return reloc_class_normal;
10415 }
10416}
10417\f
10418/* Finish up the dynamic sections. */
10419
10420static bfd_boolean
10421ppc_elf_finish_dynamic_sections (bfd *output_bfd,
10422 struct bfd_link_info *info)
10423{
10424 asection *sdyn;
10425 struct ppc_elf_link_hash_table *htab;
10426 bfd_vma got;
10427 bfd *dynobj;
10428 bfd_boolean ret = TRUE;
10429
10430#ifdef DEBUG
10431 fprintf (stderr, "ppc_elf_finish_dynamic_sections called\n");
10432#endif
10433
10434 htab = ppc_elf_hash_table (info);
10435 dynobj = htab->elf.dynobj;
10436 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
10437
10438 got = 0;
10439 if (htab->elf.hgot != NULL)
10440 got = SYM_VAL (htab->elf.hgot);
10441
10442 if (htab->elf.dynamic_sections_created)
10443 {
10444 Elf32_External_Dyn *dyncon, *dynconend;
10445
10446 BFD_ASSERT (htab->elf.splt != NULL && sdyn != NULL);
10447
10448 dyncon = (Elf32_External_Dyn *) sdyn->contents;
10449 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
10450 for (; dyncon < dynconend; dyncon++)
10451 {
10452 Elf_Internal_Dyn dyn;
10453 asection *s;
10454
10455 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
10456
10457 switch (dyn.d_tag)
10458 {
10459 case DT_PLTGOT:
10460 if (htab->is_vxworks)
10461 s = htab->elf.sgotplt;
10462 else
10463 s = htab->elf.splt;
10464 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
10465 break;
10466
10467 case DT_PLTRELSZ:
10468 dyn.d_un.d_val = htab->elf.srelplt->size;
10469 break;
10470
10471 case DT_JMPREL:
10472 s = htab->elf.srelplt;
10473 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
10474 break;
10475
10476 case DT_PPC_GOT:
10477 dyn.d_un.d_ptr = got;
10478 break;
10479
10480 default:
10481 if (htab->is_vxworks
10482 && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn))
10483 break;
10484 continue;
10485 }
10486
10487 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
10488 }
10489 }
10490
10491 if (htab->elf.sgot != NULL
10492 && htab->elf.sgot->output_section != bfd_abs_section_ptr)
10493 {
10494 if (htab->elf.hgot->root.u.def.section == htab->elf.sgot
10495 || htab->elf.hgot->root.u.def.section == htab->elf.sgotplt)
10496 {
10497 unsigned char *p = htab->elf.hgot->root.u.def.section->contents;
10498
10499 p += htab->elf.hgot->root.u.def.value;
10500 if (htab->plt_type == PLT_OLD)
10501 {
10502 /* Add a blrl instruction at _GLOBAL_OFFSET_TABLE_-4
10503 so that a function can easily find the address of
10504 _GLOBAL_OFFSET_TABLE_. */
10505 BFD_ASSERT (htab->elf.hgot->root.u.def.value - 4
10506 < htab->elf.hgot->root.u.def.section->size);
10507 bfd_put_32 (output_bfd, 0x4e800021, p - 4);
10508 }
10509
10510 if (sdyn != NULL)
10511 {
10512 bfd_vma val = sdyn->output_section->vma + sdyn->output_offset;
10513 BFD_ASSERT (htab->elf.hgot->root.u.def.value
10514 < htab->elf.hgot->root.u.def.section->size);
10515 bfd_put_32 (output_bfd, val, p);
10516 }
10517 }
10518 else
10519 {
10520 /* xgettext:c-format */
10521 info->callbacks->einfo (_("%P: %s not defined in linker created %s\n"),
10522 htab->elf.hgot->root.root.string,
10523 (htab->elf.sgotplt != NULL
10524 ? htab->elf.sgotplt->name
10525 : htab->elf.sgot->name));
10526 bfd_set_error (bfd_error_bad_value);
10527 ret = FALSE;
10528 }
10529
10530 elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize = 4;
10531 }
10532
10533 /* Fill in the first entry in the VxWorks procedure linkage table. */
10534 if (htab->is_vxworks
10535 && htab->elf.splt != NULL
10536 && htab->elf.splt->size != 0
10537 && htab->elf.splt->output_section != bfd_abs_section_ptr)
10538 {
10539 asection *splt = htab->elf.splt;
10540 /* Use the right PLT. */
10541 const bfd_vma *plt_entry = (bfd_link_pic (info)
10542 ? ppc_elf_vxworks_pic_plt0_entry
10543 : ppc_elf_vxworks_plt0_entry);
10544
10545 if (!bfd_link_pic (info))
10546 {
10547 bfd_vma got_value = SYM_VAL (htab->elf.hgot);
10548
10549 bfd_put_32 (output_bfd, plt_entry[0] | PPC_HA (got_value),
10550 splt->contents + 0);
10551 bfd_put_32 (output_bfd, plt_entry[1] | PPC_LO (got_value),
10552 splt->contents + 4);
10553 }
10554 else
10555 {
10556 bfd_put_32 (output_bfd, plt_entry[0], splt->contents + 0);
10557 bfd_put_32 (output_bfd, plt_entry[1], splt->contents + 4);
10558 }
10559 bfd_put_32 (output_bfd, plt_entry[2], splt->contents + 8);
10560 bfd_put_32 (output_bfd, plt_entry[3], splt->contents + 12);
10561 bfd_put_32 (output_bfd, plt_entry[4], splt->contents + 16);
10562 bfd_put_32 (output_bfd, plt_entry[5], splt->contents + 20);
10563 bfd_put_32 (output_bfd, plt_entry[6], splt->contents + 24);
10564 bfd_put_32 (output_bfd, plt_entry[7], splt->contents + 28);
10565
10566 if (! bfd_link_pic (info))
10567 {
10568 Elf_Internal_Rela rela;
10569 bfd_byte *loc;
10570
10571 loc = htab->srelplt2->contents;
10572
10573 /* Output the @ha relocation for the first instruction. */
10574 rela.r_offset = (htab->elf.splt->output_section->vma
10575 + htab->elf.splt->output_offset
10576 + 2);
10577 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
10578 rela.r_addend = 0;
10579 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10580 loc += sizeof (Elf32_External_Rela);
10581
10582 /* Output the @l relocation for the second instruction. */
10583 rela.r_offset = (htab->elf.splt->output_section->vma
10584 + htab->elf.splt->output_offset
10585 + 6);
10586 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
10587 rela.r_addend = 0;
10588 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10589 loc += sizeof (Elf32_External_Rela);
10590
10591 /* Fix up the remaining relocations. They may have the wrong
10592 symbol index for _G_O_T_ or _P_L_T_ depending on the order
10593 in which symbols were output. */
10594 while (loc < htab->srelplt2->contents + htab->srelplt2->size)
10595 {
10596 Elf_Internal_Rela rel;
10597
10598 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
10599 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
10600 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
10601 loc += sizeof (Elf32_External_Rela);
10602
10603 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
10604 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
10605 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
10606 loc += sizeof (Elf32_External_Rela);
10607
10608 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
10609 rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_PPC_ADDR32);
10610 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
10611 loc += sizeof (Elf32_External_Rela);
10612 }
10613 }
10614 }
10615
10616 if (htab->glink != NULL
10617 && htab->glink->contents != NULL
10618 && htab->elf.dynamic_sections_created)
10619 {
10620 unsigned char *p;
10621 unsigned char *endp;
10622 bfd_vma res0;
10623 unsigned int i;
10624
10625 /*
10626 * PIC glink code is the following:
10627 *
10628 * # ith PLT code stub.
10629 * addis 11,30,(plt+(i-1)*4-got)@ha
10630 * lwz 11,(plt+(i-1)*4-got)@l(11)
10631 * mtctr 11
10632 * bctr
10633 *
10634 * # A table of branches, one for each plt entry.
10635 * # The idea is that the plt call stub loads ctr and r11 with these
10636 * # addresses, so (r11 - res_0) gives the plt index * 4.
10637 * res_0: b PLTresolve
10638 * res_1: b PLTresolve
10639 * .
10640 * # Some number of entries towards the end can be nops
10641 * res_n_m3: nop
10642 * res_n_m2: nop
10643 * res_n_m1:
10644 *
10645 * PLTresolve:
10646 * addis 11,11,(1f-res_0)@ha
10647 * mflr 0
10648 * bcl 20,31,1f
10649 * 1: addi 11,11,(1b-res_0)@l
10650 * mflr 12
10651 * mtlr 0
10652 * sub 11,11,12 # r11 = index * 4
10653 * addis 12,12,(got+4-1b)@ha
10654 * lwz 0,(got+4-1b)@l(12) # got[1] address of dl_runtime_resolve
10655 * lwz 12,(got+8-1b)@l(12) # got[2] contains the map address
10656 * mtctr 0
10657 * add 0,11,11
10658 * add 11,0,11 # r11 = index * 12 = reloc offset.
10659 * bctr
10660 */
10661 static const unsigned int pic_plt_resolve[] =
10662 {
10663 ADDIS_11_11,
10664 MFLR_0,
10665 BCL_20_31,
10666 ADDI_11_11,
10667 MFLR_12,
10668 MTLR_0,
10669 SUB_11_11_12,
10670 ADDIS_12_12,
10671 LWZ_0_12,
10672 LWZ_12_12,
10673 MTCTR_0,
10674 ADD_0_11_11,
10675 ADD_11_0_11,
10676 BCTR,
10677 NOP,
10678 NOP
10679 };
10680
10681 /*
10682 * Non-PIC glink code is a little simpler.
10683 *
10684 * # ith PLT code stub.
10685 * lis 11,(plt+(i-1)*4)@ha
10686 * lwz 11,(plt+(i-1)*4)@l(11)
10687 * mtctr 11
10688 * bctr
10689 *
10690 * The branch table is the same, then comes
10691 *
10692 * PLTresolve:
10693 * lis 12,(got+4)@ha
10694 * addis 11,11,(-res_0)@ha
10695 * lwz 0,(got+4)@l(12) # got[1] address of dl_runtime_resolve
10696 * addi 11,11,(-res_0)@l # r11 = index * 4
10697 * mtctr 0
10698 * add 0,11,11
10699 * lwz 12,(got+8)@l(12) # got[2] contains the map address
10700 * add 11,0,11 # r11 = index * 12 = reloc offset.
10701 * bctr
10702 */
10703 static const unsigned int plt_resolve[] =
10704 {
10705 LIS_12,
10706 ADDIS_11_11,
10707 LWZ_0_12,
10708 ADDI_11_11,
10709 MTCTR_0,
10710 ADD_0_11_11,
10711 LWZ_12_12,
10712 ADD_11_0_11,
10713 BCTR,
10714 NOP,
10715 NOP,
10716 NOP,
10717 NOP,
10718 NOP,
10719 NOP,
10720 NOP
10721 };
10722
10723 if (ARRAY_SIZE (pic_plt_resolve) != GLINK_PLTRESOLVE / 4)
10724 abort ();
10725 if (ARRAY_SIZE (plt_resolve) != GLINK_PLTRESOLVE / 4)
10726 abort ();
10727
10728 /* Build the branch table, one for each plt entry (less one),
10729 and perhaps some padding. */
10730 p = htab->glink->contents;
10731 p += htab->glink_pltresolve;
10732 endp = htab->glink->contents;
10733 endp += htab->glink->size - GLINK_PLTRESOLVE;
10734 while (p < endp - (htab->params->ppc476_workaround ? 0 : 8 * 4))
10735 {
10736 bfd_put_32 (output_bfd, B + endp - p, p);
10737 p += 4;
10738 }
10739 while (p < endp)
10740 {
10741 bfd_put_32 (output_bfd, NOP, p);
10742 p += 4;
10743 }
10744
10745 res0 = (htab->glink_pltresolve
10746 + htab->glink->output_section->vma
10747 + htab->glink->output_offset);
10748
10749 if (htab->params->ppc476_workaround)
10750 {
10751 /* Ensure that a call stub at the end of a page doesn't
10752 result in prefetch over the end of the page into the
10753 glink branch table. */
10754 bfd_vma pagesize = (bfd_vma) 1 << htab->params->pagesize_p2;
10755 bfd_vma page_addr;
10756 bfd_vma glink_start = (htab->glink->output_section->vma
10757 + htab->glink->output_offset);
10758
10759 for (page_addr = res0 & -pagesize;
10760 page_addr > glink_start;
10761 page_addr -= pagesize)
10762 {
10763 /* We have a plt call stub that may need fixing. */
10764 bfd_byte *loc;
10765 unsigned int insn;
10766
10767 loc = htab->glink->contents + page_addr - 4 - glink_start;
10768 insn = bfd_get_32 (output_bfd, loc);
10769 if (insn == BCTR)
10770 {
10771 /* By alignment, we know that there must be at least
10772 one other call stub before this one. */
10773 insn = bfd_get_32 (output_bfd, loc - 16);
10774 if (insn == BCTR)
10775 bfd_put_32 (output_bfd, B | (-16 & 0x3fffffc), loc);
10776 else
10777 bfd_put_32 (output_bfd, B | (-20 & 0x3fffffc), loc);
10778 }
10779 }
10780 }
10781
10782 /* Last comes the PLTresolve stub. */
10783 if (bfd_link_pic (info))
10784 {
10785 bfd_vma bcl;
10786
10787 for (i = 0; i < ARRAY_SIZE (pic_plt_resolve); i++)
10788 {
10789 unsigned int insn = pic_plt_resolve[i];
10790
10791 if (htab->params->ppc476_workaround && insn == NOP)
10792 insn = BA + 0;
10793 bfd_put_32 (output_bfd, insn, p);
10794 p += 4;
10795 }
10796 p -= 4 * ARRAY_SIZE (pic_plt_resolve);
10797
10798 bcl = (htab->glink->size - GLINK_PLTRESOLVE + 3*4
10799 + htab->glink->output_section->vma
10800 + htab->glink->output_offset);
10801
10802 bfd_put_32 (output_bfd,
10803 ADDIS_11_11 + PPC_HA (bcl - res0), p + 0*4);
10804 bfd_put_32 (output_bfd,
10805 ADDI_11_11 + PPC_LO (bcl - res0), p + 3*4);
10806 bfd_put_32 (output_bfd,
10807 ADDIS_12_12 + PPC_HA (got + 4 - bcl), p + 7*4);
10808 if (PPC_HA (got + 4 - bcl) == PPC_HA (got + 8 - bcl))
10809 {
10810 bfd_put_32 (output_bfd,
10811 LWZ_0_12 + PPC_LO (got + 4 - bcl), p + 8*4);
10812 bfd_put_32 (output_bfd,
10813 LWZ_12_12 + PPC_LO (got + 8 - bcl), p + 9*4);
10814 }
10815 else
10816 {
10817 bfd_put_32 (output_bfd,
10818 LWZU_0_12 + PPC_LO (got + 4 - bcl), p + 8*4);
10819 bfd_put_32 (output_bfd,
10820 LWZ_12_12 + 4, p + 9*4);
10821 }
10822 }
10823 else
10824 {
10825 for (i = 0; i < ARRAY_SIZE (plt_resolve); i++)
10826 {
10827 unsigned int insn = plt_resolve[i];
10828
10829 if (htab->params->ppc476_workaround && insn == NOP)
10830 insn = BA + 0;
10831 bfd_put_32 (output_bfd, insn, p);
10832 p += 4;
10833 }
10834 p -= 4 * ARRAY_SIZE (plt_resolve);
10835
10836 bfd_put_32 (output_bfd,
10837 LIS_12 + PPC_HA (got + 4), p + 0*4);
10838 bfd_put_32 (output_bfd,
10839 ADDIS_11_11 + PPC_HA (-res0), p + 1*4);
10840 bfd_put_32 (output_bfd,
10841 ADDI_11_11 + PPC_LO (-res0), p + 3*4);
10842 if (PPC_HA (got + 4) == PPC_HA (got + 8))
10843 {
10844 bfd_put_32 (output_bfd,
10845 LWZ_0_12 + PPC_LO (got + 4), p + 2*4);
10846 bfd_put_32 (output_bfd,
10847 LWZ_12_12 + PPC_LO (got + 8), p + 6*4);
10848 }
10849 else
10850 {
10851 bfd_put_32 (output_bfd,
10852 LWZU_0_12 + PPC_LO (got + 4), p + 2*4);
10853 bfd_put_32 (output_bfd,
10854 LWZ_12_12 + 4, p + 6*4);
10855 }
10856 }
10857 }
10858
10859 if (htab->glink_eh_frame != NULL
10860 && htab->glink_eh_frame->contents != NULL)
10861 {
10862 unsigned char *p = htab->glink_eh_frame->contents;
10863 bfd_vma val;
10864
10865 p += sizeof (glink_eh_frame_cie);
10866 /* FDE length. */
10867 p += 4;
10868 /* CIE pointer. */
10869 p += 4;
10870 /* Offset to .glink. */
10871 val = (htab->glink->output_section->vma
10872 + htab->glink->output_offset);
10873 val -= (htab->glink_eh_frame->output_section->vma
10874 + htab->glink_eh_frame->output_offset);
10875 val -= p - htab->glink_eh_frame->contents;
10876 bfd_put_32 (htab->elf.dynobj, val, p);
10877
10878 if (htab->glink_eh_frame->sec_info_type == SEC_INFO_TYPE_EH_FRAME
10879 && !_bfd_elf_write_section_eh_frame (output_bfd, info,
10880 htab->glink_eh_frame,
10881 htab->glink_eh_frame->contents))
10882 return FALSE;
10883 }
10884
10885 return ret;
10886}
10887\f
10888#define TARGET_LITTLE_SYM powerpc_elf32_le_vec
10889#define TARGET_LITTLE_NAME "elf32-powerpcle"
10890#define TARGET_BIG_SYM powerpc_elf32_vec
10891#define TARGET_BIG_NAME "elf32-powerpc"
10892#define ELF_ARCH bfd_arch_powerpc
10893#define ELF_TARGET_ID PPC32_ELF_DATA
10894#define ELF_MACHINE_CODE EM_PPC
10895#ifdef __QNXTARGET__
10896#define ELF_MAXPAGESIZE 0x1000
10897#define ELF_COMMONPAGESIZE 0x1000
10898#else
10899#define ELF_MAXPAGESIZE 0x10000
10900#define ELF_COMMONPAGESIZE 0x10000
10901#endif
10902#define ELF_MINPAGESIZE 0x1000
10903#define elf_info_to_howto ppc_elf_info_to_howto
10904
10905#ifdef EM_CYGNUS_POWERPC
10906#define ELF_MACHINE_ALT1 EM_CYGNUS_POWERPC
10907#endif
10908
10909#ifdef EM_PPC_OLD
10910#define ELF_MACHINE_ALT2 EM_PPC_OLD
10911#endif
10912
10913#define elf_backend_plt_not_loaded 1
10914#define elf_backend_want_dynrelro 1
10915#define elf_backend_can_gc_sections 1
10916#define elf_backend_can_refcount 1
10917#define elf_backend_rela_normal 1
10918#define elf_backend_caches_rawsize 1
10919
10920#define bfd_elf32_mkobject ppc_elf_mkobject
10921#define bfd_elf32_bfd_merge_private_bfd_data ppc_elf_merge_private_bfd_data
10922#define bfd_elf32_bfd_relax_section ppc_elf_relax_section
10923#define bfd_elf32_bfd_reloc_type_lookup ppc_elf_reloc_type_lookup
10924#define bfd_elf32_bfd_reloc_name_lookup ppc_elf_reloc_name_lookup
10925#define bfd_elf32_bfd_set_private_flags ppc_elf_set_private_flags
10926#define bfd_elf32_bfd_link_hash_table_create ppc_elf_link_hash_table_create
10927#define bfd_elf32_get_synthetic_symtab ppc_elf_get_synthetic_symtab
10928
10929#define elf_backend_object_p ppc_elf_object_p
10930#define elf_backend_gc_mark_hook ppc_elf_gc_mark_hook
10931#define elf_backend_gc_sweep_hook ppc_elf_gc_sweep_hook
10932#define elf_backend_section_from_shdr ppc_elf_section_from_shdr
10933#define elf_backend_relocate_section ppc_elf_relocate_section
10934#define elf_backend_create_dynamic_sections ppc_elf_create_dynamic_sections
10935#define elf_backend_check_relocs ppc_elf_check_relocs
10936#define elf_backend_copy_indirect_symbol ppc_elf_copy_indirect_symbol
10937#define elf_backend_adjust_dynamic_symbol ppc_elf_adjust_dynamic_symbol
10938#define elf_backend_add_symbol_hook ppc_elf_add_symbol_hook
10939#define elf_backend_size_dynamic_sections ppc_elf_size_dynamic_sections
10940#define elf_backend_hash_symbol ppc_elf_hash_symbol
10941#define elf_backend_finish_dynamic_symbol ppc_elf_finish_dynamic_symbol
10942#define elf_backend_finish_dynamic_sections ppc_elf_finish_dynamic_sections
10943#define elf_backend_fake_sections ppc_elf_fake_sections
10944#define elf_backend_additional_program_headers ppc_elf_additional_program_headers
10945#define elf_backend_modify_segment_map ppc_elf_modify_segment_map
10946#define elf_backend_grok_prstatus ppc_elf_grok_prstatus
10947#define elf_backend_grok_psinfo ppc_elf_grok_psinfo
10948#define elf_backend_write_core_note ppc_elf_write_core_note
10949#define elf_backend_reloc_type_class ppc_elf_reloc_type_class
10950#define elf_backend_begin_write_processing ppc_elf_begin_write_processing
10951#define elf_backend_final_write_processing ppc_elf_final_write_processing
10952#define elf_backend_write_section ppc_elf_write_section
10953#define elf_backend_get_sec_type_attr ppc_elf_get_sec_type_attr
10954#define elf_backend_plt_sym_val ppc_elf_plt_sym_val
10955#define elf_backend_action_discarded ppc_elf_action_discarded
10956#define elf_backend_init_index_section _bfd_elf_init_1_index_section
10957#define elf_backend_lookup_section_flags_hook ppc_elf_lookup_section_flags
10958
10959#include "elf32-target.h"
10960
10961/* FreeBSD Target */
10962
10963#undef TARGET_LITTLE_SYM
10964#undef TARGET_LITTLE_NAME
10965
10966#undef TARGET_BIG_SYM
10967#define TARGET_BIG_SYM powerpc_elf32_fbsd_vec
10968#undef TARGET_BIG_NAME
10969#define TARGET_BIG_NAME "elf32-powerpc-freebsd"
10970
10971#undef ELF_OSABI
10972#define ELF_OSABI ELFOSABI_FREEBSD
10973
10974#undef elf32_bed
10975#define elf32_bed elf32_powerpc_fbsd_bed
10976
10977#include "elf32-target.h"
10978
10979/* VxWorks Target */
10980
10981#undef TARGET_LITTLE_SYM
10982#undef TARGET_LITTLE_NAME
10983
10984#undef TARGET_BIG_SYM
10985#define TARGET_BIG_SYM powerpc_elf32_vxworks_vec
10986#undef TARGET_BIG_NAME
10987#define TARGET_BIG_NAME "elf32-powerpc-vxworks"
10988
10989#undef ELF_OSABI
10990
10991/* VxWorks uses the elf default section flags for .plt. */
10992static const struct bfd_elf_special_section *
10993ppc_elf_vxworks_get_sec_type_attr (bfd *abfd ATTRIBUTE_UNUSED, asection *sec)
10994{
10995 if (sec->name == NULL)
10996 return NULL;
10997
10998 if (strcmp (sec->name, ".plt") == 0)
10999 return _bfd_elf_get_sec_type_attr (abfd, sec);
11000
11001 return ppc_elf_get_sec_type_attr (abfd, sec);
11002}
11003
11004/* Like ppc_elf_link_hash_table_create, but overrides
11005 appropriately for VxWorks. */
11006static struct bfd_link_hash_table *
11007ppc_elf_vxworks_link_hash_table_create (bfd *abfd)
11008{
11009 struct bfd_link_hash_table *ret;
11010
11011 ret = ppc_elf_link_hash_table_create (abfd);
11012 if (ret)
11013 {
11014 struct ppc_elf_link_hash_table *htab
11015 = (struct ppc_elf_link_hash_table *)ret;
11016 htab->is_vxworks = 1;
11017 htab->plt_type = PLT_VXWORKS;
11018 htab->plt_entry_size = VXWORKS_PLT_ENTRY_SIZE;
11019 htab->plt_slot_size = VXWORKS_PLT_ENTRY_SIZE;
11020 htab->plt_initial_entry_size = VXWORKS_PLT_INITIAL_ENTRY_SIZE;
11021 }
11022 return ret;
11023}
11024
11025/* Tweak magic VxWorks symbols as they are loaded. */
11026static bfd_boolean
11027ppc_elf_vxworks_add_symbol_hook (bfd *abfd,
11028 struct bfd_link_info *info,
11029 Elf_Internal_Sym *sym,
11030 const char **namep ATTRIBUTE_UNUSED,
11031 flagword *flagsp ATTRIBUTE_UNUSED,
11032 asection **secp,
11033 bfd_vma *valp)
11034{
11035 if (!elf_vxworks_add_symbol_hook(abfd, info, sym,namep, flagsp, secp,
11036 valp))
11037 return FALSE;
11038
11039 return ppc_elf_add_symbol_hook(abfd, info, sym,namep, flagsp, secp, valp);
11040}
11041
11042static void
11043ppc_elf_vxworks_final_write_processing (bfd *abfd, bfd_boolean linker)
11044{
11045 ppc_elf_final_write_processing(abfd, linker);
11046 elf_vxworks_final_write_processing(abfd, linker);
11047}
11048
11049/* On VxWorks, we emit relocations against _PROCEDURE_LINKAGE_TABLE_, so
11050 define it. */
11051#undef elf_backend_want_plt_sym
11052#define elf_backend_want_plt_sym 1
11053#undef elf_backend_want_got_plt
11054#define elf_backend_want_got_plt 1
11055#undef elf_backend_got_symbol_offset
11056#define elf_backend_got_symbol_offset 0
11057#undef elf_backend_plt_not_loaded
11058#define elf_backend_plt_not_loaded 0
11059#undef elf_backend_plt_readonly
11060#define elf_backend_plt_readonly 1
11061#undef elf_backend_got_header_size
11062#define elf_backend_got_header_size 12
11063#undef elf_backend_dtrel_excludes_plt
11064#define elf_backend_dtrel_excludes_plt 1
11065
11066#undef bfd_elf32_get_synthetic_symtab
11067
11068#undef bfd_elf32_bfd_link_hash_table_create
11069#define bfd_elf32_bfd_link_hash_table_create \
11070 ppc_elf_vxworks_link_hash_table_create
11071#undef elf_backend_add_symbol_hook
11072#define elf_backend_add_symbol_hook \
11073 ppc_elf_vxworks_add_symbol_hook
11074#undef elf_backend_link_output_symbol_hook
11075#define elf_backend_link_output_symbol_hook \
11076 elf_vxworks_link_output_symbol_hook
11077#undef elf_backend_final_write_processing
11078#define elf_backend_final_write_processing \
11079 ppc_elf_vxworks_final_write_processing
11080#undef elf_backend_get_sec_type_attr
11081#define elf_backend_get_sec_type_attr \
11082 ppc_elf_vxworks_get_sec_type_attr
11083#undef elf_backend_emit_relocs
11084#define elf_backend_emit_relocs \
11085 elf_vxworks_emit_relocs
11086
11087#undef elf32_bed
11088#define elf32_bed ppc_elf_vxworks_bed
11089#undef elf_backend_post_process_headers
11090
11091#include "elf32-target.h"
GDB Binutils - Deliverables
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