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gdb: Enable gdbserver by default on sparc-*-linux*
[deliverable/binutils-gdb.git] / bfd / elf32-ppc.c
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1/* PowerPC-specific support for 32-bit ELF
2 Copyright 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
3 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012
4 Free Software Foundation, Inc.
5 Written by Ian Lance Taylor, Cygnus Support.
6
7 This file is part of BFD, the Binary File Descriptor library.
8
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 3 of the License, or
12 (at your option) any later version.
13
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
18
19 You should have received a copy of the GNU General Public License
20 along with this program; if not, write to the
21 Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor,
22 Boston, MA 02110-1301, USA. */
23
24
25/* This file is based on a preliminary PowerPC ELF ABI. The
26 information may not match the final PowerPC ELF ABI. It includes
27 suggestions from the in-progress Embedded PowerPC ABI, and that
28 information may also not match. */
29
30#include "sysdep.h"
31#include <stdarg.h>
32#include "bfd.h"
33#include "bfdlink.h"
34#include "libbfd.h"
35#include "elf-bfd.h"
36#include "elf/ppc.h"
37#include "elf32-ppc.h"
38#include "elf-vxworks.h"
39#include "dwarf2.h"
40
41/* RELA relocations are used here. */
42
43static bfd_reloc_status_type ppc_elf_addr16_ha_reloc
44 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
45static bfd_reloc_status_type ppc_elf_unhandled_reloc
46 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
47
48/* Branch prediction bit for branch taken relocs. */
49#define BRANCH_PREDICT_BIT 0x200000
50/* Mask to set RA in memory instructions. */
51#define RA_REGISTER_MASK 0x001f0000
52/* Value to shift register by to insert RA. */
53#define RA_REGISTER_SHIFT 16
54
55/* The name of the dynamic interpreter. This is put in the .interp
56 section. */
57#define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
58
59/* For old-style PLT. */
60/* The number of single-slot PLT entries (the rest use two slots). */
61#define PLT_NUM_SINGLE_ENTRIES 8192
62
63/* For new-style .glink and .plt. */
64#define GLINK_PLTRESOLVE 16*4
65#define GLINK_ENTRY_SIZE 4*4
66#define TLS_GET_ADDR_GLINK_SIZE 12*4
67
68/* VxWorks uses its own plt layout, filled in by the static linker. */
69
70/* The standard VxWorks PLT entry. */
71#define VXWORKS_PLT_ENTRY_SIZE 32
72static const bfd_vma ppc_elf_vxworks_plt_entry
73 [VXWORKS_PLT_ENTRY_SIZE / 4] =
74 {
75 0x3d800000, /* lis r12,0 */
76 0x818c0000, /* lwz r12,0(r12) */
77 0x7d8903a6, /* mtctr r12 */
78 0x4e800420, /* bctr */
79 0x39600000, /* li r11,0 */
80 0x48000000, /* b 14 <.PLT0resolve+0x4> */
81 0x60000000, /* nop */
82 0x60000000, /* nop */
83 };
84static const bfd_vma ppc_elf_vxworks_pic_plt_entry
85 [VXWORKS_PLT_ENTRY_SIZE / 4] =
86 {
87 0x3d9e0000, /* addis r12,r30,0 */
88 0x818c0000, /* lwz r12,0(r12) */
89 0x7d8903a6, /* mtctr r12 */
90 0x4e800420, /* bctr */
91 0x39600000, /* li r11,0 */
92 0x48000000, /* b 14 <.PLT0resolve+0x4> 14: R_PPC_REL24 .PLTresolve */
93 0x60000000, /* nop */
94 0x60000000, /* nop */
95 };
96
97/* The initial VxWorks PLT entry. */
98#define VXWORKS_PLT_INITIAL_ENTRY_SIZE 32
99static const bfd_vma ppc_elf_vxworks_plt0_entry
100 [VXWORKS_PLT_INITIAL_ENTRY_SIZE / 4] =
101 {
102 0x3d800000, /* lis r12,0 */
103 0x398c0000, /* addi r12,r12,0 */
104 0x800c0008, /* lwz r0,8(r12) */
105 0x7c0903a6, /* mtctr r0 */
106 0x818c0004, /* lwz r12,4(r12) */
107 0x4e800420, /* bctr */
108 0x60000000, /* nop */
109 0x60000000, /* nop */
110 };
111static const bfd_vma ppc_elf_vxworks_pic_plt0_entry
112 [VXWORKS_PLT_INITIAL_ENTRY_SIZE / 4] =
113 {
114 0x819e0008, /* lwz r12,8(r30) */
115 0x7d8903a6, /* mtctr r12 */
116 0x819e0004, /* lwz r12,4(r30) */
117 0x4e800420, /* bctr */
118 0x60000000, /* nop */
119 0x60000000, /* nop */
120 0x60000000, /* nop */
121 0x60000000, /* nop */
122 };
123
124/* For executables, we have some additional relocations in
125 .rela.plt.unloaded, for the kernel loader. */
126
127/* The number of non-JMP_SLOT relocations per PLT0 slot. */
128#define VXWORKS_PLT_NON_JMP_SLOT_RELOCS 3
129/* The number of relocations in the PLTResolve slot. */
130#define VXWORKS_PLTRESOLVE_RELOCS 2
131/* The number of relocations in the PLTResolve slot when when creating
132 a shared library. */
133#define VXWORKS_PLTRESOLVE_RELOCS_SHLIB 0
134
135/* Some instructions. */
136#define ADDIS_11_11 0x3d6b0000
137#define ADDIS_11_30 0x3d7e0000
138#define ADDIS_12_12 0x3d8c0000
139#define ADDI_11_11 0x396b0000
140#define ADD_0_11_11 0x7c0b5a14
141#define ADD_3_12_2 0x7c6c1214
142#define ADD_11_0_11 0x7d605a14
143#define B 0x48000000
144#define BCL_20_31 0x429f0005
145#define BCTR 0x4e800420
146#define BEQLR 0x4d820020
147#define CMPWI_11_0 0x2c0b0000
148#define LIS_11 0x3d600000
149#define LIS_12 0x3d800000
150#define LWZU_0_12 0x840c0000
151#define LWZ_0_12 0x800c0000
152#define LWZ_11_3 0x81630000
153#define LWZ_11_11 0x816b0000
154#define LWZ_11_30 0x817e0000
155#define LWZ_12_3 0x81830000
156#define LWZ_12_12 0x818c0000
157#define MR_0_3 0x7c601b78
158#define MR_3_0 0x7c030378
159#define MFLR_0 0x7c0802a6
160#define MFLR_12 0x7d8802a6
161#define MTCTR_0 0x7c0903a6
162#define MTCTR_11 0x7d6903a6
163#define MTLR_0 0x7c0803a6
164#define NOP 0x60000000
165#define SUB_11_11_12 0x7d6c5850
166
167/* Offset of tp and dtp pointers from start of TLS block. */
168#define TP_OFFSET 0x7000
169#define DTP_OFFSET 0x8000
170
171/* The value of a defined global symbol. */
172#define SYM_VAL(SYM) \
173 ((SYM)->root.u.def.section->output_section->vma \
174 + (SYM)->root.u.def.section->output_offset \
175 + (SYM)->root.u.def.value)
176\f
177static reloc_howto_type *ppc_elf_howto_table[R_PPC_max];
178
179static reloc_howto_type ppc_elf_howto_raw[] = {
180 /* This reloc does nothing. */
181 HOWTO (R_PPC_NONE, /* type */
182 0, /* rightshift */
183 2, /* size (0 = byte, 1 = short, 2 = long) */
184 32, /* bitsize */
185 FALSE, /* pc_relative */
186 0, /* bitpos */
187 complain_overflow_bitfield, /* complain_on_overflow */
188 bfd_elf_generic_reloc, /* special_function */
189 "R_PPC_NONE", /* name */
190 FALSE, /* partial_inplace */
191 0, /* src_mask */
192 0, /* dst_mask */
193 FALSE), /* pcrel_offset */
194
195 /* A standard 32 bit relocation. */
196 HOWTO (R_PPC_ADDR32, /* type */
197 0, /* rightshift */
198 2, /* size (0 = byte, 1 = short, 2 = long) */
199 32, /* bitsize */
200 FALSE, /* pc_relative */
201 0, /* bitpos */
202 complain_overflow_bitfield, /* complain_on_overflow */
203 bfd_elf_generic_reloc, /* special_function */
204 "R_PPC_ADDR32", /* name */
205 FALSE, /* partial_inplace */
206 0, /* src_mask */
207 0xffffffff, /* dst_mask */
208 FALSE), /* pcrel_offset */
209
210 /* An absolute 26 bit branch; the lower two bits must be zero.
211 FIXME: we don't check that, we just clear them. */
212 HOWTO (R_PPC_ADDR24, /* type */
213 0, /* rightshift */
214 2, /* size (0 = byte, 1 = short, 2 = long) */
215 26, /* bitsize */
216 FALSE, /* pc_relative */
217 0, /* bitpos */
218 complain_overflow_bitfield, /* complain_on_overflow */
219 bfd_elf_generic_reloc, /* special_function */
220 "R_PPC_ADDR24", /* name */
221 FALSE, /* partial_inplace */
222 0, /* src_mask */
223 0x3fffffc, /* dst_mask */
224 FALSE), /* pcrel_offset */
225
226 /* A standard 16 bit relocation. */
227 HOWTO (R_PPC_ADDR16, /* type */
228 0, /* rightshift */
229 1, /* size (0 = byte, 1 = short, 2 = long) */
230 16, /* bitsize */
231 FALSE, /* pc_relative */
232 0, /* bitpos */
233 complain_overflow_bitfield, /* complain_on_overflow */
234 bfd_elf_generic_reloc, /* special_function */
235 "R_PPC_ADDR16", /* name */
236 FALSE, /* partial_inplace */
237 0, /* src_mask */
238 0xffff, /* dst_mask */
239 FALSE), /* pcrel_offset */
240
241 /* A 16 bit relocation without overflow. */
242 HOWTO (R_PPC_ADDR16_LO, /* type */
243 0, /* rightshift */
244 1, /* size (0 = byte, 1 = short, 2 = long) */
245 16, /* bitsize */
246 FALSE, /* pc_relative */
247 0, /* bitpos */
248 complain_overflow_dont,/* complain_on_overflow */
249 bfd_elf_generic_reloc, /* special_function */
250 "R_PPC_ADDR16_LO", /* name */
251 FALSE, /* partial_inplace */
252 0, /* src_mask */
253 0xffff, /* dst_mask */
254 FALSE), /* pcrel_offset */
255
256 /* The high order 16 bits of an address. */
257 HOWTO (R_PPC_ADDR16_HI, /* type */
258 16, /* rightshift */
259 1, /* size (0 = byte, 1 = short, 2 = long) */
260 16, /* bitsize */
261 FALSE, /* pc_relative */
262 0, /* bitpos */
263 complain_overflow_dont, /* complain_on_overflow */
264 bfd_elf_generic_reloc, /* special_function */
265 "R_PPC_ADDR16_HI", /* name */
266 FALSE, /* partial_inplace */
267 0, /* src_mask */
268 0xffff, /* dst_mask */
269 FALSE), /* pcrel_offset */
270
271 /* The high order 16 bits of an address, plus 1 if the contents of
272 the low 16 bits, treated as a signed number, is negative. */
273 HOWTO (R_PPC_ADDR16_HA, /* type */
274 16, /* rightshift */
275 1, /* size (0 = byte, 1 = short, 2 = long) */
276 16, /* bitsize */
277 FALSE, /* pc_relative */
278 0, /* bitpos */
279 complain_overflow_dont, /* complain_on_overflow */
280 ppc_elf_addr16_ha_reloc, /* special_function */
281 "R_PPC_ADDR16_HA", /* name */
282 FALSE, /* partial_inplace */
283 0, /* src_mask */
284 0xffff, /* dst_mask */
285 FALSE), /* pcrel_offset */
286
287 /* An absolute 16 bit branch; the lower two bits must be zero.
288 FIXME: we don't check that, we just clear them. */
289 HOWTO (R_PPC_ADDR14, /* type */
290 0, /* rightshift */
291 2, /* size (0 = byte, 1 = short, 2 = long) */
292 16, /* bitsize */
293 FALSE, /* pc_relative */
294 0, /* bitpos */
295 complain_overflow_bitfield, /* complain_on_overflow */
296 bfd_elf_generic_reloc, /* special_function */
297 "R_PPC_ADDR14", /* name */
298 FALSE, /* partial_inplace */
299 0, /* src_mask */
300 0xfffc, /* dst_mask */
301 FALSE), /* pcrel_offset */
302
303 /* An absolute 16 bit branch, for which bit 10 should be set to
304 indicate that the branch is expected to be taken. The lower two
305 bits must be zero. */
306 HOWTO (R_PPC_ADDR14_BRTAKEN, /* type */
307 0, /* rightshift */
308 2, /* size (0 = byte, 1 = short, 2 = long) */
309 16, /* bitsize */
310 FALSE, /* pc_relative */
311 0, /* bitpos */
312 complain_overflow_bitfield, /* complain_on_overflow */
313 bfd_elf_generic_reloc, /* special_function */
314 "R_PPC_ADDR14_BRTAKEN",/* name */
315 FALSE, /* partial_inplace */
316 0, /* src_mask */
317 0xfffc, /* dst_mask */
318 FALSE), /* pcrel_offset */
319
320 /* An absolute 16 bit branch, for which bit 10 should be set to
321 indicate that the branch is not expected to be taken. The lower
322 two bits must be zero. */
323 HOWTO (R_PPC_ADDR14_BRNTAKEN, /* type */
324 0, /* rightshift */
325 2, /* size (0 = byte, 1 = short, 2 = long) */
326 16, /* bitsize */
327 FALSE, /* pc_relative */
328 0, /* bitpos */
329 complain_overflow_bitfield, /* complain_on_overflow */
330 bfd_elf_generic_reloc, /* special_function */
331 "R_PPC_ADDR14_BRNTAKEN",/* name */
332 FALSE, /* partial_inplace */
333 0, /* src_mask */
334 0xfffc, /* dst_mask */
335 FALSE), /* pcrel_offset */
336
337 /* A relative 26 bit branch; the lower two bits must be zero. */
338 HOWTO (R_PPC_REL24, /* type */
339 0, /* rightshift */
340 2, /* size (0 = byte, 1 = short, 2 = long) */
341 26, /* bitsize */
342 TRUE, /* pc_relative */
343 0, /* bitpos */
344 complain_overflow_signed, /* complain_on_overflow */
345 bfd_elf_generic_reloc, /* special_function */
346 "R_PPC_REL24", /* name */
347 FALSE, /* partial_inplace */
348 0, /* src_mask */
349 0x3fffffc, /* dst_mask */
350 TRUE), /* pcrel_offset */
351
352 /* A relative 16 bit branch; the lower two bits must be zero. */
353 HOWTO (R_PPC_REL14, /* type */
354 0, /* rightshift */
355 2, /* size (0 = byte, 1 = short, 2 = long) */
356 16, /* bitsize */
357 TRUE, /* pc_relative */
358 0, /* bitpos */
359 complain_overflow_signed, /* complain_on_overflow */
360 bfd_elf_generic_reloc, /* special_function */
361 "R_PPC_REL14", /* name */
362 FALSE, /* partial_inplace */
363 0, /* src_mask */
364 0xfffc, /* dst_mask */
365 TRUE), /* pcrel_offset */
366
367 /* A relative 16 bit branch. Bit 10 should be set to indicate that
368 the branch is expected to be taken. The lower two bits must be
369 zero. */
370 HOWTO (R_PPC_REL14_BRTAKEN, /* type */
371 0, /* rightshift */
372 2, /* size (0 = byte, 1 = short, 2 = long) */
373 16, /* bitsize */
374 TRUE, /* pc_relative */
375 0, /* bitpos */
376 complain_overflow_signed, /* complain_on_overflow */
377 bfd_elf_generic_reloc, /* special_function */
378 "R_PPC_REL14_BRTAKEN", /* name */
379 FALSE, /* partial_inplace */
380 0, /* src_mask */
381 0xfffc, /* dst_mask */
382 TRUE), /* pcrel_offset */
383
384 /* A relative 16 bit branch. Bit 10 should be set to indicate that
385 the branch is not expected to be taken. The lower two bits must
386 be zero. */
387 HOWTO (R_PPC_REL14_BRNTAKEN, /* type */
388 0, /* rightshift */
389 2, /* size (0 = byte, 1 = short, 2 = long) */
390 16, /* bitsize */
391 TRUE, /* pc_relative */
392 0, /* bitpos */
393 complain_overflow_signed, /* complain_on_overflow */
394 bfd_elf_generic_reloc, /* special_function */
395 "R_PPC_REL14_BRNTAKEN",/* name */
396 FALSE, /* partial_inplace */
397 0, /* src_mask */
398 0xfffc, /* dst_mask */
399 TRUE), /* pcrel_offset */
400
401 /* Like R_PPC_ADDR16, but referring to the GOT table entry for the
402 symbol. */
403 HOWTO (R_PPC_GOT16, /* type */
404 0, /* rightshift */
405 1, /* size (0 = byte, 1 = short, 2 = long) */
406 16, /* bitsize */
407 FALSE, /* pc_relative */
408 0, /* bitpos */
409 complain_overflow_signed, /* complain_on_overflow */
410 bfd_elf_generic_reloc, /* special_function */
411 "R_PPC_GOT16", /* name */
412 FALSE, /* partial_inplace */
413 0, /* src_mask */
414 0xffff, /* dst_mask */
415 FALSE), /* pcrel_offset */
416
417 /* Like R_PPC_ADDR16_LO, but referring to the GOT table entry for
418 the symbol. */
419 HOWTO (R_PPC_GOT16_LO, /* type */
420 0, /* rightshift */
421 1, /* size (0 = byte, 1 = short, 2 = long) */
422 16, /* bitsize */
423 FALSE, /* pc_relative */
424 0, /* bitpos */
425 complain_overflow_dont, /* complain_on_overflow */
426 bfd_elf_generic_reloc, /* special_function */
427 "R_PPC_GOT16_LO", /* name */
428 FALSE, /* partial_inplace */
429 0, /* src_mask */
430 0xffff, /* dst_mask */
431 FALSE), /* pcrel_offset */
432
433 /* Like R_PPC_ADDR16_HI, but referring to the GOT table entry for
434 the symbol. */
435 HOWTO (R_PPC_GOT16_HI, /* type */
436 16, /* rightshift */
437 1, /* size (0 = byte, 1 = short, 2 = long) */
438 16, /* bitsize */
439 FALSE, /* pc_relative */
440 0, /* bitpos */
441 complain_overflow_bitfield, /* complain_on_overflow */
442 bfd_elf_generic_reloc, /* special_function */
443 "R_PPC_GOT16_HI", /* name */
444 FALSE, /* partial_inplace */
445 0, /* src_mask */
446 0xffff, /* dst_mask */
447 FALSE), /* pcrel_offset */
448
449 /* Like R_PPC_ADDR16_HA, but referring to the GOT table entry for
450 the symbol. */
451 HOWTO (R_PPC_GOT16_HA, /* type */
452 16, /* rightshift */
453 1, /* size (0 = byte, 1 = short, 2 = long) */
454 16, /* bitsize */
455 FALSE, /* pc_relative */
456 0, /* bitpos */
457 complain_overflow_bitfield, /* complain_on_overflow */
458 ppc_elf_addr16_ha_reloc, /* special_function */
459 "R_PPC_GOT16_HA", /* name */
460 FALSE, /* partial_inplace */
461 0, /* src_mask */
462 0xffff, /* dst_mask */
463 FALSE), /* pcrel_offset */
464
465 /* Like R_PPC_REL24, but referring to the procedure linkage table
466 entry for the symbol. */
467 HOWTO (R_PPC_PLTREL24, /* type */
468 0, /* rightshift */
469 2, /* size (0 = byte, 1 = short, 2 = long) */
470 26, /* bitsize */
471 TRUE, /* pc_relative */
472 0, /* bitpos */
473 complain_overflow_signed, /* complain_on_overflow */
474 bfd_elf_generic_reloc, /* special_function */
475 "R_PPC_PLTREL24", /* name */
476 FALSE, /* partial_inplace */
477 0, /* src_mask */
478 0x3fffffc, /* dst_mask */
479 TRUE), /* pcrel_offset */
480
481 /* This is used only by the dynamic linker. The symbol should exist
482 both in the object being run and in some shared library. The
483 dynamic linker copies the data addressed by the symbol from the
484 shared library into the object, because the object being
485 run has to have the data at some particular address. */
486 HOWTO (R_PPC_COPY, /* type */
487 0, /* rightshift */
488 2, /* size (0 = byte, 1 = short, 2 = long) */
489 32, /* bitsize */
490 FALSE, /* pc_relative */
491 0, /* bitpos */
492 complain_overflow_bitfield, /* complain_on_overflow */
493 bfd_elf_generic_reloc, /* special_function */
494 "R_PPC_COPY", /* name */
495 FALSE, /* partial_inplace */
496 0, /* src_mask */
497 0, /* dst_mask */
498 FALSE), /* pcrel_offset */
499
500 /* Like R_PPC_ADDR32, but used when setting global offset table
501 entries. */
502 HOWTO (R_PPC_GLOB_DAT, /* type */
503 0, /* rightshift */
504 2, /* size (0 = byte, 1 = short, 2 = long) */
505 32, /* bitsize */
506 FALSE, /* pc_relative */
507 0, /* bitpos */
508 complain_overflow_bitfield, /* complain_on_overflow */
509 bfd_elf_generic_reloc, /* special_function */
510 "R_PPC_GLOB_DAT", /* name */
511 FALSE, /* partial_inplace */
512 0, /* src_mask */
513 0xffffffff, /* dst_mask */
514 FALSE), /* pcrel_offset */
515
516 /* Marks a procedure linkage table entry for a symbol. */
517 HOWTO (R_PPC_JMP_SLOT, /* type */
518 0, /* rightshift */
519 2, /* size (0 = byte, 1 = short, 2 = long) */
520 32, /* bitsize */
521 FALSE, /* pc_relative */
522 0, /* bitpos */
523 complain_overflow_bitfield, /* complain_on_overflow */
524 bfd_elf_generic_reloc, /* special_function */
525 "R_PPC_JMP_SLOT", /* name */
526 FALSE, /* partial_inplace */
527 0, /* src_mask */
528 0, /* dst_mask */
529 FALSE), /* pcrel_offset */
530
531 /* Used only by the dynamic linker. When the object is run, this
532 longword is set to the load address of the object, plus the
533 addend. */
534 HOWTO (R_PPC_RELATIVE, /* type */
535 0, /* rightshift */
536 2, /* size (0 = byte, 1 = short, 2 = long) */
537 32, /* bitsize */
538 FALSE, /* pc_relative */
539 0, /* bitpos */
540 complain_overflow_bitfield, /* complain_on_overflow */
541 bfd_elf_generic_reloc, /* special_function */
542 "R_PPC_RELATIVE", /* name */
543 FALSE, /* partial_inplace */
544 0, /* src_mask */
545 0xffffffff, /* dst_mask */
546 FALSE), /* pcrel_offset */
547
548 /* Like R_PPC_REL24, but uses the value of the symbol within the
549 object rather than the final value. Normally used for
550 _GLOBAL_OFFSET_TABLE_. */
551 HOWTO (R_PPC_LOCAL24PC, /* type */
552 0, /* rightshift */
553 2, /* size (0 = byte, 1 = short, 2 = long) */
554 26, /* bitsize */
555 TRUE, /* pc_relative */
556 0, /* bitpos */
557 complain_overflow_signed, /* complain_on_overflow */
558 bfd_elf_generic_reloc, /* special_function */
559 "R_PPC_LOCAL24PC", /* name */
560 FALSE, /* partial_inplace */
561 0, /* src_mask */
562 0x3fffffc, /* dst_mask */
563 TRUE), /* pcrel_offset */
564
565 /* Like R_PPC_ADDR32, but may be unaligned. */
566 HOWTO (R_PPC_UADDR32, /* type */
567 0, /* rightshift */
568 2, /* size (0 = byte, 1 = short, 2 = long) */
569 32, /* bitsize */
570 FALSE, /* pc_relative */
571 0, /* bitpos */
572 complain_overflow_bitfield, /* complain_on_overflow */
573 bfd_elf_generic_reloc, /* special_function */
574 "R_PPC_UADDR32", /* name */
575 FALSE, /* partial_inplace */
576 0, /* src_mask */
577 0xffffffff, /* dst_mask */
578 FALSE), /* pcrel_offset */
579
580 /* Like R_PPC_ADDR16, but may be unaligned. */
581 HOWTO (R_PPC_UADDR16, /* type */
582 0, /* rightshift */
583 1, /* size (0 = byte, 1 = short, 2 = long) */
584 16, /* bitsize */
585 FALSE, /* pc_relative */
586 0, /* bitpos */
587 complain_overflow_bitfield, /* complain_on_overflow */
588 bfd_elf_generic_reloc, /* special_function */
589 "R_PPC_UADDR16", /* name */
590 FALSE, /* partial_inplace */
591 0, /* src_mask */
592 0xffff, /* dst_mask */
593 FALSE), /* pcrel_offset */
594
595 /* 32-bit PC relative */
596 HOWTO (R_PPC_REL32, /* type */
597 0, /* rightshift */
598 2, /* size (0 = byte, 1 = short, 2 = long) */
599 32, /* bitsize */
600 TRUE, /* pc_relative */
601 0, /* bitpos */
602 complain_overflow_bitfield, /* complain_on_overflow */
603 bfd_elf_generic_reloc, /* special_function */
604 "R_PPC_REL32", /* name */
605 FALSE, /* partial_inplace */
606 0, /* src_mask */
607 0xffffffff, /* dst_mask */
608 TRUE), /* pcrel_offset */
609
610 /* 32-bit relocation to the symbol's procedure linkage table.
611 FIXME: not supported. */
612 HOWTO (R_PPC_PLT32, /* type */
613 0, /* rightshift */
614 2, /* size (0 = byte, 1 = short, 2 = long) */
615 32, /* bitsize */
616 FALSE, /* pc_relative */
617 0, /* bitpos */
618 complain_overflow_bitfield, /* complain_on_overflow */
619 bfd_elf_generic_reloc, /* special_function */
620 "R_PPC_PLT32", /* name */
621 FALSE, /* partial_inplace */
622 0, /* src_mask */
623 0, /* dst_mask */
624 FALSE), /* pcrel_offset */
625
626 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
627 FIXME: not supported. */
628 HOWTO (R_PPC_PLTREL32, /* type */
629 0, /* rightshift */
630 2, /* size (0 = byte, 1 = short, 2 = long) */
631 32, /* bitsize */
632 TRUE, /* pc_relative */
633 0, /* bitpos */
634 complain_overflow_bitfield, /* complain_on_overflow */
635 bfd_elf_generic_reloc, /* special_function */
636 "R_PPC_PLTREL32", /* name */
637 FALSE, /* partial_inplace */
638 0, /* src_mask */
639 0, /* dst_mask */
640 TRUE), /* pcrel_offset */
641
642 /* Like R_PPC_ADDR16_LO, but referring to the PLT table entry for
643 the symbol. */
644 HOWTO (R_PPC_PLT16_LO, /* type */
645 0, /* rightshift */
646 1, /* size (0 = byte, 1 = short, 2 = long) */
647 16, /* bitsize */
648 FALSE, /* pc_relative */
649 0, /* bitpos */
650 complain_overflow_dont, /* complain_on_overflow */
651 bfd_elf_generic_reloc, /* special_function */
652 "R_PPC_PLT16_LO", /* name */
653 FALSE, /* partial_inplace */
654 0, /* src_mask */
655 0xffff, /* dst_mask */
656 FALSE), /* pcrel_offset */
657
658 /* Like R_PPC_ADDR16_HI, but referring to the PLT table entry for
659 the symbol. */
660 HOWTO (R_PPC_PLT16_HI, /* type */
661 16, /* rightshift */
662 1, /* size (0 = byte, 1 = short, 2 = long) */
663 16, /* bitsize */
664 FALSE, /* pc_relative */
665 0, /* bitpos */
666 complain_overflow_bitfield, /* complain_on_overflow */
667 bfd_elf_generic_reloc, /* special_function */
668 "R_PPC_PLT16_HI", /* name */
669 FALSE, /* partial_inplace */
670 0, /* src_mask */
671 0xffff, /* dst_mask */
672 FALSE), /* pcrel_offset */
673
674 /* Like R_PPC_ADDR16_HA, but referring to the PLT table entry for
675 the symbol. */
676 HOWTO (R_PPC_PLT16_HA, /* type */
677 16, /* rightshift */
678 1, /* size (0 = byte, 1 = short, 2 = long) */
679 16, /* bitsize */
680 FALSE, /* pc_relative */
681 0, /* bitpos */
682 complain_overflow_bitfield, /* complain_on_overflow */
683 ppc_elf_addr16_ha_reloc, /* special_function */
684 "R_PPC_PLT16_HA", /* name */
685 FALSE, /* partial_inplace */
686 0, /* src_mask */
687 0xffff, /* dst_mask */
688 FALSE), /* pcrel_offset */
689
690 /* A sign-extended 16 bit value relative to _SDA_BASE_, for use with
691 small data items. */
692 HOWTO (R_PPC_SDAREL16, /* type */
693 0, /* rightshift */
694 1, /* size (0 = byte, 1 = short, 2 = long) */
695 16, /* bitsize */
696 FALSE, /* pc_relative */
697 0, /* bitpos */
698 complain_overflow_signed, /* complain_on_overflow */
699 bfd_elf_generic_reloc, /* special_function */
700 "R_PPC_SDAREL16", /* name */
701 FALSE, /* partial_inplace */
702 0, /* src_mask */
703 0xffff, /* dst_mask */
704 FALSE), /* pcrel_offset */
705
706 /* 16-bit section relative relocation. */
707 HOWTO (R_PPC_SECTOFF, /* type */
708 0, /* rightshift */
709 1, /* size (0 = byte, 1 = short, 2 = long) */
710 16, /* bitsize */
711 FALSE, /* pc_relative */
712 0, /* bitpos */
713 complain_overflow_bitfield, /* complain_on_overflow */
714 bfd_elf_generic_reloc, /* special_function */
715 "R_PPC_SECTOFF", /* name */
716 FALSE, /* partial_inplace */
717 0, /* src_mask */
718 0xffff, /* dst_mask */
719 FALSE), /* pcrel_offset */
720
721 /* 16-bit lower half section relative relocation. */
722 HOWTO (R_PPC_SECTOFF_LO, /* type */
723 0, /* rightshift */
724 1, /* size (0 = byte, 1 = short, 2 = long) */
725 16, /* bitsize */
726 FALSE, /* pc_relative */
727 0, /* bitpos */
728 complain_overflow_dont, /* complain_on_overflow */
729 bfd_elf_generic_reloc, /* special_function */
730 "R_PPC_SECTOFF_LO", /* name */
731 FALSE, /* partial_inplace */
732 0, /* src_mask */
733 0xffff, /* dst_mask */
734 FALSE), /* pcrel_offset */
735
736 /* 16-bit upper half section relative relocation. */
737 HOWTO (R_PPC_SECTOFF_HI, /* type */
738 16, /* rightshift */
739 1, /* size (0 = byte, 1 = short, 2 = long) */
740 16, /* bitsize */
741 FALSE, /* pc_relative */
742 0, /* bitpos */
743 complain_overflow_bitfield, /* complain_on_overflow */
744 bfd_elf_generic_reloc, /* special_function */
745 "R_PPC_SECTOFF_HI", /* name */
746 FALSE, /* partial_inplace */
747 0, /* src_mask */
748 0xffff, /* dst_mask */
749 FALSE), /* pcrel_offset */
750
751 /* 16-bit upper half adjusted section relative relocation. */
752 HOWTO (R_PPC_SECTOFF_HA, /* type */
753 16, /* rightshift */
754 1, /* size (0 = byte, 1 = short, 2 = long) */
755 16, /* bitsize */
756 FALSE, /* pc_relative */
757 0, /* bitpos */
758 complain_overflow_bitfield, /* complain_on_overflow */
759 ppc_elf_addr16_ha_reloc, /* special_function */
760 "R_PPC_SECTOFF_HA", /* name */
761 FALSE, /* partial_inplace */
762 0, /* src_mask */
763 0xffff, /* dst_mask */
764 FALSE), /* pcrel_offset */
765
766 /* Marker relocs for TLS. */
767 HOWTO (R_PPC_TLS,
768 0, /* rightshift */
769 2, /* size (0 = byte, 1 = short, 2 = long) */
770 32, /* bitsize */
771 FALSE, /* pc_relative */
772 0, /* bitpos */
773 complain_overflow_dont, /* complain_on_overflow */
774 bfd_elf_generic_reloc, /* special_function */
775 "R_PPC_TLS", /* name */
776 FALSE, /* partial_inplace */
777 0, /* src_mask */
778 0, /* dst_mask */
779 FALSE), /* pcrel_offset */
780
781 HOWTO (R_PPC_TLSGD,
782 0, /* rightshift */
783 2, /* size (0 = byte, 1 = short, 2 = long) */
784 32, /* bitsize */
785 FALSE, /* pc_relative */
786 0, /* bitpos */
787 complain_overflow_dont, /* complain_on_overflow */
788 bfd_elf_generic_reloc, /* special_function */
789 "R_PPC_TLSGD", /* name */
790 FALSE, /* partial_inplace */
791 0, /* src_mask */
792 0, /* dst_mask */
793 FALSE), /* pcrel_offset */
794
795 HOWTO (R_PPC_TLSLD,
796 0, /* rightshift */
797 2, /* size (0 = byte, 1 = short, 2 = long) */
798 32, /* bitsize */
799 FALSE, /* pc_relative */
800 0, /* bitpos */
801 complain_overflow_dont, /* complain_on_overflow */
802 bfd_elf_generic_reloc, /* special_function */
803 "R_PPC_TLSLD", /* name */
804 FALSE, /* partial_inplace */
805 0, /* src_mask */
806 0, /* dst_mask */
807 FALSE), /* pcrel_offset */
808
809 /* Computes the load module index of the load module that contains the
810 definition of its TLS sym. */
811 HOWTO (R_PPC_DTPMOD32,
812 0, /* rightshift */
813 2, /* size (0 = byte, 1 = short, 2 = long) */
814 32, /* bitsize */
815 FALSE, /* pc_relative */
816 0, /* bitpos */
817 complain_overflow_dont, /* complain_on_overflow */
818 ppc_elf_unhandled_reloc, /* special_function */
819 "R_PPC_DTPMOD32", /* name */
820 FALSE, /* partial_inplace */
821 0, /* src_mask */
822 0xffffffff, /* dst_mask */
823 FALSE), /* pcrel_offset */
824
825 /* Computes a dtv-relative displacement, the difference between the value
826 of sym+add and the base address of the thread-local storage block that
827 contains the definition of sym, minus 0x8000. */
828 HOWTO (R_PPC_DTPREL32,
829 0, /* rightshift */
830 2, /* size (0 = byte, 1 = short, 2 = long) */
831 32, /* bitsize */
832 FALSE, /* pc_relative */
833 0, /* bitpos */
834 complain_overflow_dont, /* complain_on_overflow */
835 ppc_elf_unhandled_reloc, /* special_function */
836 "R_PPC_DTPREL32", /* name */
837 FALSE, /* partial_inplace */
838 0, /* src_mask */
839 0xffffffff, /* dst_mask */
840 FALSE), /* pcrel_offset */
841
842 /* A 16 bit dtprel reloc. */
843 HOWTO (R_PPC_DTPREL16,
844 0, /* rightshift */
845 1, /* size (0 = byte, 1 = short, 2 = long) */
846 16, /* bitsize */
847 FALSE, /* pc_relative */
848 0, /* bitpos */
849 complain_overflow_signed, /* complain_on_overflow */
850 ppc_elf_unhandled_reloc, /* special_function */
851 "R_PPC_DTPREL16", /* name */
852 FALSE, /* partial_inplace */
853 0, /* src_mask */
854 0xffff, /* dst_mask */
855 FALSE), /* pcrel_offset */
856
857 /* Like DTPREL16, but no overflow. */
858 HOWTO (R_PPC_DTPREL16_LO,
859 0, /* rightshift */
860 1, /* size (0 = byte, 1 = short, 2 = long) */
861 16, /* bitsize */
862 FALSE, /* pc_relative */
863 0, /* bitpos */
864 complain_overflow_dont, /* complain_on_overflow */
865 ppc_elf_unhandled_reloc, /* special_function */
866 "R_PPC_DTPREL16_LO", /* name */
867 FALSE, /* partial_inplace */
868 0, /* src_mask */
869 0xffff, /* dst_mask */
870 FALSE), /* pcrel_offset */
871
872 /* Like DTPREL16_LO, but next higher group of 16 bits. */
873 HOWTO (R_PPC_DTPREL16_HI,
874 16, /* rightshift */
875 1, /* size (0 = byte, 1 = short, 2 = long) */
876 16, /* bitsize */
877 FALSE, /* pc_relative */
878 0, /* bitpos */
879 complain_overflow_dont, /* complain_on_overflow */
880 ppc_elf_unhandled_reloc, /* special_function */
881 "R_PPC_DTPREL16_HI", /* name */
882 FALSE, /* partial_inplace */
883 0, /* src_mask */
884 0xffff, /* dst_mask */
885 FALSE), /* pcrel_offset */
886
887 /* Like DTPREL16_HI, but adjust for low 16 bits. */
888 HOWTO (R_PPC_DTPREL16_HA,
889 16, /* rightshift */
890 1, /* size (0 = byte, 1 = short, 2 = long) */
891 16, /* bitsize */
892 FALSE, /* pc_relative */
893 0, /* bitpos */
894 complain_overflow_dont, /* complain_on_overflow */
895 ppc_elf_unhandled_reloc, /* special_function */
896 "R_PPC_DTPREL16_HA", /* name */
897 FALSE, /* partial_inplace */
898 0, /* src_mask */
899 0xffff, /* dst_mask */
900 FALSE), /* pcrel_offset */
901
902 /* Computes a tp-relative displacement, the difference between the value of
903 sym+add and the value of the thread pointer (r13). */
904 HOWTO (R_PPC_TPREL32,
905 0, /* rightshift */
906 2, /* size (0 = byte, 1 = short, 2 = long) */
907 32, /* bitsize */
908 FALSE, /* pc_relative */
909 0, /* bitpos */
910 complain_overflow_dont, /* complain_on_overflow */
911 ppc_elf_unhandled_reloc, /* special_function */
912 "R_PPC_TPREL32", /* name */
913 FALSE, /* partial_inplace */
914 0, /* src_mask */
915 0xffffffff, /* dst_mask */
916 FALSE), /* pcrel_offset */
917
918 /* A 16 bit tprel reloc. */
919 HOWTO (R_PPC_TPREL16,
920 0, /* rightshift */
921 1, /* size (0 = byte, 1 = short, 2 = long) */
922 16, /* bitsize */
923 FALSE, /* pc_relative */
924 0, /* bitpos */
925 complain_overflow_signed, /* complain_on_overflow */
926 ppc_elf_unhandled_reloc, /* special_function */
927 "R_PPC_TPREL16", /* name */
928 FALSE, /* partial_inplace */
929 0, /* src_mask */
930 0xffff, /* dst_mask */
931 FALSE), /* pcrel_offset */
932
933 /* Like TPREL16, but no overflow. */
934 HOWTO (R_PPC_TPREL16_LO,
935 0, /* rightshift */
936 1, /* size (0 = byte, 1 = short, 2 = long) */
937 16, /* bitsize */
938 FALSE, /* pc_relative */
939 0, /* bitpos */
940 complain_overflow_dont, /* complain_on_overflow */
941 ppc_elf_unhandled_reloc, /* special_function */
942 "R_PPC_TPREL16_LO", /* name */
943 FALSE, /* partial_inplace */
944 0, /* src_mask */
945 0xffff, /* dst_mask */
946 FALSE), /* pcrel_offset */
947
948 /* Like TPREL16_LO, but next higher group of 16 bits. */
949 HOWTO (R_PPC_TPREL16_HI,
950 16, /* rightshift */
951 1, /* size (0 = byte, 1 = short, 2 = long) */
952 16, /* bitsize */
953 FALSE, /* pc_relative */
954 0, /* bitpos */
955 complain_overflow_dont, /* complain_on_overflow */
956 ppc_elf_unhandled_reloc, /* special_function */
957 "R_PPC_TPREL16_HI", /* name */
958 FALSE, /* partial_inplace */
959 0, /* src_mask */
960 0xffff, /* dst_mask */
961 FALSE), /* pcrel_offset */
962
963 /* Like TPREL16_HI, but adjust for low 16 bits. */
964 HOWTO (R_PPC_TPREL16_HA,
965 16, /* rightshift */
966 1, /* size (0 = byte, 1 = short, 2 = long) */
967 16, /* bitsize */
968 FALSE, /* pc_relative */
969 0, /* bitpos */
970 complain_overflow_dont, /* complain_on_overflow */
971 ppc_elf_unhandled_reloc, /* special_function */
972 "R_PPC_TPREL16_HA", /* name */
973 FALSE, /* partial_inplace */
974 0, /* src_mask */
975 0xffff, /* dst_mask */
976 FALSE), /* pcrel_offset */
977
978 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
979 with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
980 to the first entry. */
981 HOWTO (R_PPC_GOT_TLSGD16,
982 0, /* rightshift */
983 1, /* size (0 = byte, 1 = short, 2 = long) */
984 16, /* bitsize */
985 FALSE, /* pc_relative */
986 0, /* bitpos */
987 complain_overflow_signed, /* complain_on_overflow */
988 ppc_elf_unhandled_reloc, /* special_function */
989 "R_PPC_GOT_TLSGD16", /* name */
990 FALSE, /* partial_inplace */
991 0, /* src_mask */
992 0xffff, /* dst_mask */
993 FALSE), /* pcrel_offset */
994
995 /* Like GOT_TLSGD16, but no overflow. */
996 HOWTO (R_PPC_GOT_TLSGD16_LO,
997 0, /* rightshift */
998 1, /* size (0 = byte, 1 = short, 2 = long) */
999 16, /* bitsize */
1000 FALSE, /* pc_relative */
1001 0, /* bitpos */
1002 complain_overflow_dont, /* complain_on_overflow */
1003 ppc_elf_unhandled_reloc, /* special_function */
1004 "R_PPC_GOT_TLSGD16_LO", /* name */
1005 FALSE, /* partial_inplace */
1006 0, /* src_mask */
1007 0xffff, /* dst_mask */
1008 FALSE), /* pcrel_offset */
1009
1010 /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
1011 HOWTO (R_PPC_GOT_TLSGD16_HI,
1012 16, /* rightshift */
1013 1, /* size (0 = byte, 1 = short, 2 = long) */
1014 16, /* bitsize */
1015 FALSE, /* pc_relative */
1016 0, /* bitpos */
1017 complain_overflow_dont, /* complain_on_overflow */
1018 ppc_elf_unhandled_reloc, /* special_function */
1019 "R_PPC_GOT_TLSGD16_HI", /* name */
1020 FALSE, /* partial_inplace */
1021 0, /* src_mask */
1022 0xffff, /* dst_mask */
1023 FALSE), /* pcrel_offset */
1024
1025 /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
1026 HOWTO (R_PPC_GOT_TLSGD16_HA,
1027 16, /* rightshift */
1028 1, /* size (0 = byte, 1 = short, 2 = long) */
1029 16, /* bitsize */
1030 FALSE, /* pc_relative */
1031 0, /* bitpos */
1032 complain_overflow_dont, /* complain_on_overflow */
1033 ppc_elf_unhandled_reloc, /* special_function */
1034 "R_PPC_GOT_TLSGD16_HA", /* name */
1035 FALSE, /* partial_inplace */
1036 0, /* src_mask */
1037 0xffff, /* dst_mask */
1038 FALSE), /* pcrel_offset */
1039
1040 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1041 with values (sym+add)@dtpmod and zero, and computes the offset to the
1042 first entry. */
1043 HOWTO (R_PPC_GOT_TLSLD16,
1044 0, /* rightshift */
1045 1, /* size (0 = byte, 1 = short, 2 = long) */
1046 16, /* bitsize */
1047 FALSE, /* pc_relative */
1048 0, /* bitpos */
1049 complain_overflow_signed, /* complain_on_overflow */
1050 ppc_elf_unhandled_reloc, /* special_function */
1051 "R_PPC_GOT_TLSLD16", /* name */
1052 FALSE, /* partial_inplace */
1053 0, /* src_mask */
1054 0xffff, /* dst_mask */
1055 FALSE), /* pcrel_offset */
1056
1057 /* Like GOT_TLSLD16, but no overflow. */
1058 HOWTO (R_PPC_GOT_TLSLD16_LO,
1059 0, /* rightshift */
1060 1, /* size (0 = byte, 1 = short, 2 = long) */
1061 16, /* bitsize */
1062 FALSE, /* pc_relative */
1063 0, /* bitpos */
1064 complain_overflow_dont, /* complain_on_overflow */
1065 ppc_elf_unhandled_reloc, /* special_function */
1066 "R_PPC_GOT_TLSLD16_LO", /* name */
1067 FALSE, /* partial_inplace */
1068 0, /* src_mask */
1069 0xffff, /* dst_mask */
1070 FALSE), /* pcrel_offset */
1071
1072 /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
1073 HOWTO (R_PPC_GOT_TLSLD16_HI,
1074 16, /* rightshift */
1075 1, /* size (0 = byte, 1 = short, 2 = long) */
1076 16, /* bitsize */
1077 FALSE, /* pc_relative */
1078 0, /* bitpos */
1079 complain_overflow_dont, /* complain_on_overflow */
1080 ppc_elf_unhandled_reloc, /* special_function */
1081 "R_PPC_GOT_TLSLD16_HI", /* name */
1082 FALSE, /* partial_inplace */
1083 0, /* src_mask */
1084 0xffff, /* dst_mask */
1085 FALSE), /* pcrel_offset */
1086
1087 /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
1088 HOWTO (R_PPC_GOT_TLSLD16_HA,
1089 16, /* rightshift */
1090 1, /* size (0 = byte, 1 = short, 2 = long) */
1091 16, /* bitsize */
1092 FALSE, /* pc_relative */
1093 0, /* bitpos */
1094 complain_overflow_dont, /* complain_on_overflow */
1095 ppc_elf_unhandled_reloc, /* special_function */
1096 "R_PPC_GOT_TLSLD16_HA", /* name */
1097 FALSE, /* partial_inplace */
1098 0, /* src_mask */
1099 0xffff, /* dst_mask */
1100 FALSE), /* pcrel_offset */
1101
1102 /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
1103 the offset to the entry. */
1104 HOWTO (R_PPC_GOT_DTPREL16,
1105 0, /* rightshift */
1106 1, /* size (0 = byte, 1 = short, 2 = long) */
1107 16, /* bitsize */
1108 FALSE, /* pc_relative */
1109 0, /* bitpos */
1110 complain_overflow_signed, /* complain_on_overflow */
1111 ppc_elf_unhandled_reloc, /* special_function */
1112 "R_PPC_GOT_DTPREL16", /* name */
1113 FALSE, /* partial_inplace */
1114 0, /* src_mask */
1115 0xffff, /* dst_mask */
1116 FALSE), /* pcrel_offset */
1117
1118 /* Like GOT_DTPREL16, but no overflow. */
1119 HOWTO (R_PPC_GOT_DTPREL16_LO,
1120 0, /* rightshift */
1121 1, /* size (0 = byte, 1 = short, 2 = long) */
1122 16, /* bitsize */
1123 FALSE, /* pc_relative */
1124 0, /* bitpos */
1125 complain_overflow_dont, /* complain_on_overflow */
1126 ppc_elf_unhandled_reloc, /* special_function */
1127 "R_PPC_GOT_DTPREL16_LO", /* name */
1128 FALSE, /* partial_inplace */
1129 0, /* src_mask */
1130 0xffff, /* dst_mask */
1131 FALSE), /* pcrel_offset */
1132
1133 /* Like GOT_DTPREL16_LO, but next higher group of 16 bits. */
1134 HOWTO (R_PPC_GOT_DTPREL16_HI,
1135 16, /* rightshift */
1136 1, /* size (0 = byte, 1 = short, 2 = long) */
1137 16, /* bitsize */
1138 FALSE, /* pc_relative */
1139 0, /* bitpos */
1140 complain_overflow_dont, /* complain_on_overflow */
1141 ppc_elf_unhandled_reloc, /* special_function */
1142 "R_PPC_GOT_DTPREL16_HI", /* name */
1143 FALSE, /* partial_inplace */
1144 0, /* src_mask */
1145 0xffff, /* dst_mask */
1146 FALSE), /* pcrel_offset */
1147
1148 /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
1149 HOWTO (R_PPC_GOT_DTPREL16_HA,
1150 16, /* rightshift */
1151 1, /* size (0 = byte, 1 = short, 2 = long) */
1152 16, /* bitsize */
1153 FALSE, /* pc_relative */
1154 0, /* bitpos */
1155 complain_overflow_dont, /* complain_on_overflow */
1156 ppc_elf_unhandled_reloc, /* special_function */
1157 "R_PPC_GOT_DTPREL16_HA", /* name */
1158 FALSE, /* partial_inplace */
1159 0, /* src_mask */
1160 0xffff, /* dst_mask */
1161 FALSE), /* pcrel_offset */
1162
1163 /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
1164 offset to the entry. */
1165 HOWTO (R_PPC_GOT_TPREL16,
1166 0, /* rightshift */
1167 1, /* size (0 = byte, 1 = short, 2 = long) */
1168 16, /* bitsize */
1169 FALSE, /* pc_relative */
1170 0, /* bitpos */
1171 complain_overflow_signed, /* complain_on_overflow */
1172 ppc_elf_unhandled_reloc, /* special_function */
1173 "R_PPC_GOT_TPREL16", /* name */
1174 FALSE, /* partial_inplace */
1175 0, /* src_mask */
1176 0xffff, /* dst_mask */
1177 FALSE), /* pcrel_offset */
1178
1179 /* Like GOT_TPREL16, but no overflow. */
1180 HOWTO (R_PPC_GOT_TPREL16_LO,
1181 0, /* rightshift */
1182 1, /* size (0 = byte, 1 = short, 2 = long) */
1183 16, /* bitsize */
1184 FALSE, /* pc_relative */
1185 0, /* bitpos */
1186 complain_overflow_dont, /* complain_on_overflow */
1187 ppc_elf_unhandled_reloc, /* special_function */
1188 "R_PPC_GOT_TPREL16_LO", /* name */
1189 FALSE, /* partial_inplace */
1190 0, /* src_mask */
1191 0xffff, /* dst_mask */
1192 FALSE), /* pcrel_offset */
1193
1194 /* Like GOT_TPREL16_LO, but next higher group of 16 bits. */
1195 HOWTO (R_PPC_GOT_TPREL16_HI,
1196 16, /* rightshift */
1197 1, /* size (0 = byte, 1 = short, 2 = long) */
1198 16, /* bitsize */
1199 FALSE, /* pc_relative */
1200 0, /* bitpos */
1201 complain_overflow_dont, /* complain_on_overflow */
1202 ppc_elf_unhandled_reloc, /* special_function */
1203 "R_PPC_GOT_TPREL16_HI", /* name */
1204 FALSE, /* partial_inplace */
1205 0, /* src_mask */
1206 0xffff, /* dst_mask */
1207 FALSE), /* pcrel_offset */
1208
1209 /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
1210 HOWTO (R_PPC_GOT_TPREL16_HA,
1211 16, /* rightshift */
1212 1, /* size (0 = byte, 1 = short, 2 = long) */
1213 16, /* bitsize */
1214 FALSE, /* pc_relative */
1215 0, /* bitpos */
1216 complain_overflow_dont, /* complain_on_overflow */
1217 ppc_elf_unhandled_reloc, /* special_function */
1218 "R_PPC_GOT_TPREL16_HA", /* name */
1219 FALSE, /* partial_inplace */
1220 0, /* src_mask */
1221 0xffff, /* dst_mask */
1222 FALSE), /* pcrel_offset */
1223
1224 /* The remaining relocs are from the Embedded ELF ABI, and are not
1225 in the SVR4 ELF ABI. */
1226
1227 /* 32 bit value resulting from the addend minus the symbol. */
1228 HOWTO (R_PPC_EMB_NADDR32, /* type */
1229 0, /* rightshift */
1230 2, /* size (0 = byte, 1 = short, 2 = long) */
1231 32, /* bitsize */
1232 FALSE, /* pc_relative */
1233 0, /* bitpos */
1234 complain_overflow_bitfield, /* complain_on_overflow */
1235 bfd_elf_generic_reloc, /* special_function */
1236 "R_PPC_EMB_NADDR32", /* name */
1237 FALSE, /* partial_inplace */
1238 0, /* src_mask */
1239 0xffffffff, /* dst_mask */
1240 FALSE), /* pcrel_offset */
1241
1242 /* 16 bit value resulting from the addend minus the symbol. */
1243 HOWTO (R_PPC_EMB_NADDR16, /* type */
1244 0, /* rightshift */
1245 1, /* size (0 = byte, 1 = short, 2 = long) */
1246 16, /* bitsize */
1247 FALSE, /* pc_relative */
1248 0, /* bitpos */
1249 complain_overflow_bitfield, /* complain_on_overflow */
1250 bfd_elf_generic_reloc, /* special_function */
1251 "R_PPC_EMB_NADDR16", /* name */
1252 FALSE, /* partial_inplace */
1253 0, /* src_mask */
1254 0xffff, /* dst_mask */
1255 FALSE), /* pcrel_offset */
1256
1257 /* 16 bit value resulting from the addend minus the symbol. */
1258 HOWTO (R_PPC_EMB_NADDR16_LO, /* type */
1259 0, /* rightshift */
1260 1, /* size (0 = byte, 1 = short, 2 = long) */
1261 16, /* bitsize */
1262 FALSE, /* pc_relative */
1263 0, /* bitpos */
1264 complain_overflow_dont,/* complain_on_overflow */
1265 bfd_elf_generic_reloc, /* special_function */
1266 "R_PPC_EMB_ADDR16_LO", /* name */
1267 FALSE, /* partial_inplace */
1268 0, /* src_mask */
1269 0xffff, /* dst_mask */
1270 FALSE), /* pcrel_offset */
1271
1272 /* The high order 16 bits of the addend minus the symbol. */
1273 HOWTO (R_PPC_EMB_NADDR16_HI, /* type */
1274 16, /* rightshift */
1275 1, /* size (0 = byte, 1 = short, 2 = long) */
1276 16, /* bitsize */
1277 FALSE, /* pc_relative */
1278 0, /* bitpos */
1279 complain_overflow_dont, /* complain_on_overflow */
1280 bfd_elf_generic_reloc, /* special_function */
1281 "R_PPC_EMB_NADDR16_HI", /* name */
1282 FALSE, /* partial_inplace */
1283 0, /* src_mask */
1284 0xffff, /* dst_mask */
1285 FALSE), /* pcrel_offset */
1286
1287 /* The high order 16 bits of the result of the addend minus the address,
1288 plus 1 if the contents of the low 16 bits, treated as a signed number,
1289 is negative. */
1290 HOWTO (R_PPC_EMB_NADDR16_HA, /* type */
1291 16, /* rightshift */
1292 1, /* size (0 = byte, 1 = short, 2 = long) */
1293 16, /* bitsize */
1294 FALSE, /* pc_relative */
1295 0, /* bitpos */
1296 complain_overflow_dont, /* complain_on_overflow */
1297 ppc_elf_addr16_ha_reloc, /* special_function */
1298 "R_PPC_EMB_NADDR16_HA", /* name */
1299 FALSE, /* partial_inplace */
1300 0, /* src_mask */
1301 0xffff, /* dst_mask */
1302 FALSE), /* pcrel_offset */
1303
1304 /* 16 bit value resulting from allocating a 4 byte word to hold an
1305 address in the .sdata section, and returning the offset from
1306 _SDA_BASE_ for that relocation. */
1307 HOWTO (R_PPC_EMB_SDAI16, /* type */
1308 0, /* rightshift */
1309 1, /* size (0 = byte, 1 = short, 2 = long) */
1310 16, /* bitsize */
1311 FALSE, /* pc_relative */
1312 0, /* bitpos */
1313 complain_overflow_signed, /* complain_on_overflow */
1314 bfd_elf_generic_reloc, /* special_function */
1315 "R_PPC_EMB_SDAI16", /* name */
1316 FALSE, /* partial_inplace */
1317 0, /* src_mask */
1318 0xffff, /* dst_mask */
1319 FALSE), /* pcrel_offset */
1320
1321 /* 16 bit value resulting from allocating a 4 byte word to hold an
1322 address in the .sdata2 section, and returning the offset from
1323 _SDA2_BASE_ for that relocation. */
1324 HOWTO (R_PPC_EMB_SDA2I16, /* type */
1325 0, /* rightshift */
1326 1, /* size (0 = byte, 1 = short, 2 = long) */
1327 16, /* bitsize */
1328 FALSE, /* pc_relative */
1329 0, /* bitpos */
1330 complain_overflow_signed, /* complain_on_overflow */
1331 bfd_elf_generic_reloc, /* special_function */
1332 "R_PPC_EMB_SDA2I16", /* name */
1333 FALSE, /* partial_inplace */
1334 0, /* src_mask */
1335 0xffff, /* dst_mask */
1336 FALSE), /* pcrel_offset */
1337
1338 /* A sign-extended 16 bit value relative to _SDA2_BASE_, for use with
1339 small data items. */
1340 HOWTO (R_PPC_EMB_SDA2REL, /* type */
1341 0, /* rightshift */
1342 1, /* size (0 = byte, 1 = short, 2 = long) */
1343 16, /* bitsize */
1344 FALSE, /* pc_relative */
1345 0, /* bitpos */
1346 complain_overflow_signed, /* complain_on_overflow */
1347 bfd_elf_generic_reloc, /* special_function */
1348 "R_PPC_EMB_SDA2REL", /* name */
1349 FALSE, /* partial_inplace */
1350 0, /* src_mask */
1351 0xffff, /* dst_mask */
1352 FALSE), /* pcrel_offset */
1353
1354 /* Relocate against either _SDA_BASE_ or _SDA2_BASE_, filling in the 16 bit
1355 signed offset from the appropriate base, and filling in the register
1356 field with the appropriate register (0, 2, or 13). */
1357 HOWTO (R_PPC_EMB_SDA21, /* type */
1358 0, /* rightshift */
1359 2, /* size (0 = byte, 1 = short, 2 = long) */
1360 16, /* bitsize */
1361 FALSE, /* pc_relative */
1362 0, /* bitpos */
1363 complain_overflow_signed, /* complain_on_overflow */
1364 bfd_elf_generic_reloc, /* special_function */
1365 "R_PPC_EMB_SDA21", /* name */
1366 FALSE, /* partial_inplace */
1367 0, /* src_mask */
1368 0xffff, /* dst_mask */
1369 FALSE), /* pcrel_offset */
1370
1371 /* Relocation not handled: R_PPC_EMB_MRKREF */
1372 /* Relocation not handled: R_PPC_EMB_RELSEC16 */
1373 /* Relocation not handled: R_PPC_EMB_RELST_LO */
1374 /* Relocation not handled: R_PPC_EMB_RELST_HI */
1375 /* Relocation not handled: R_PPC_EMB_RELST_HA */
1376 /* Relocation not handled: R_PPC_EMB_BIT_FLD */
1377
1378 /* PC relative relocation against either _SDA_BASE_ or _SDA2_BASE_, filling
1379 in the 16 bit signed offset from the appropriate base, and filling in the
1380 register field with the appropriate register (0, 2, or 13). */
1381 HOWTO (R_PPC_EMB_RELSDA, /* type */
1382 0, /* rightshift */
1383 1, /* size (0 = byte, 1 = short, 2 = long) */
1384 16, /* bitsize */
1385 FALSE, /* pc_relative */
1386 0, /* bitpos */
1387 complain_overflow_signed, /* complain_on_overflow */
1388 bfd_elf_generic_reloc, /* special_function */
1389 "R_PPC_EMB_RELSDA", /* name */
1390 FALSE, /* partial_inplace */
1391 0, /* src_mask */
1392 0xffff, /* dst_mask */
1393 FALSE), /* pcrel_offset */
1394
1395 HOWTO (R_PPC_IRELATIVE, /* type */
1396 0, /* rightshift */
1397 2, /* size (0 = byte, 1 = short, 2 = long) */
1398 32, /* bitsize */
1399 FALSE, /* pc_relative */
1400 0, /* bitpos */
1401 complain_overflow_bitfield, /* complain_on_overflow */
1402 bfd_elf_generic_reloc, /* special_function */
1403 "R_PPC_IRELATIVE", /* name */
1404 FALSE, /* partial_inplace */
1405 0, /* src_mask */
1406 0xffffffff, /* dst_mask */
1407 FALSE), /* pcrel_offset */
1408
1409 /* A 16 bit relative relocation. */
1410 HOWTO (R_PPC_REL16, /* type */
1411 0, /* rightshift */
1412 1, /* size (0 = byte, 1 = short, 2 = long) */
1413 16, /* bitsize */
1414 TRUE, /* pc_relative */
1415 0, /* bitpos */
1416 complain_overflow_bitfield, /* complain_on_overflow */
1417 bfd_elf_generic_reloc, /* special_function */
1418 "R_PPC_REL16", /* name */
1419 FALSE, /* partial_inplace */
1420 0, /* src_mask */
1421 0xffff, /* dst_mask */
1422 TRUE), /* pcrel_offset */
1423
1424 /* A 16 bit relative relocation without overflow. */
1425 HOWTO (R_PPC_REL16_LO, /* type */
1426 0, /* rightshift */
1427 1, /* size (0 = byte, 1 = short, 2 = long) */
1428 16, /* bitsize */
1429 TRUE, /* pc_relative */
1430 0, /* bitpos */
1431 complain_overflow_dont,/* complain_on_overflow */
1432 bfd_elf_generic_reloc, /* special_function */
1433 "R_PPC_REL16_LO", /* name */
1434 FALSE, /* partial_inplace */
1435 0, /* src_mask */
1436 0xffff, /* dst_mask */
1437 TRUE), /* pcrel_offset */
1438
1439 /* The high order 16 bits of a relative address. */
1440 HOWTO (R_PPC_REL16_HI, /* type */
1441 16, /* rightshift */
1442 1, /* size (0 = byte, 1 = short, 2 = long) */
1443 16, /* bitsize */
1444 TRUE, /* pc_relative */
1445 0, /* bitpos */
1446 complain_overflow_dont, /* complain_on_overflow */
1447 bfd_elf_generic_reloc, /* special_function */
1448 "R_PPC_REL16_HI", /* name */
1449 FALSE, /* partial_inplace */
1450 0, /* src_mask */
1451 0xffff, /* dst_mask */
1452 TRUE), /* pcrel_offset */
1453
1454 /* The high order 16 bits of a relative address, plus 1 if the contents of
1455 the low 16 bits, treated as a signed number, is negative. */
1456 HOWTO (R_PPC_REL16_HA, /* type */
1457 16, /* rightshift */
1458 1, /* size (0 = byte, 1 = short, 2 = long) */
1459 16, /* bitsize */
1460 TRUE, /* pc_relative */
1461 0, /* bitpos */
1462 complain_overflow_dont, /* complain_on_overflow */
1463 ppc_elf_addr16_ha_reloc, /* special_function */
1464 "R_PPC_REL16_HA", /* name */
1465 FALSE, /* partial_inplace */
1466 0, /* src_mask */
1467 0xffff, /* dst_mask */
1468 TRUE), /* pcrel_offset */
1469
1470 /* GNU extension to record C++ vtable hierarchy. */
1471 HOWTO (R_PPC_GNU_VTINHERIT, /* type */
1472 0, /* rightshift */
1473 0, /* size (0 = byte, 1 = short, 2 = long) */
1474 0, /* bitsize */
1475 FALSE, /* pc_relative */
1476 0, /* bitpos */
1477 complain_overflow_dont, /* complain_on_overflow */
1478 NULL, /* special_function */
1479 "R_PPC_GNU_VTINHERIT", /* name */
1480 FALSE, /* partial_inplace */
1481 0, /* src_mask */
1482 0, /* dst_mask */
1483 FALSE), /* pcrel_offset */
1484
1485 /* GNU extension to record C++ vtable member usage. */
1486 HOWTO (R_PPC_GNU_VTENTRY, /* type */
1487 0, /* rightshift */
1488 0, /* size (0 = byte, 1 = short, 2 = long) */
1489 0, /* bitsize */
1490 FALSE, /* pc_relative */
1491 0, /* bitpos */
1492 complain_overflow_dont, /* complain_on_overflow */
1493 NULL, /* special_function */
1494 "R_PPC_GNU_VTENTRY", /* name */
1495 FALSE, /* partial_inplace */
1496 0, /* src_mask */
1497 0, /* dst_mask */
1498 FALSE), /* pcrel_offset */
1499
1500 /* Phony reloc to handle AIX style TOC entries. */
1501 HOWTO (R_PPC_TOC16, /* type */
1502 0, /* rightshift */
1503 1, /* size (0 = byte, 1 = short, 2 = long) */
1504 16, /* bitsize */
1505 FALSE, /* pc_relative */
1506 0, /* bitpos */
1507 complain_overflow_signed, /* complain_on_overflow */
1508 bfd_elf_generic_reloc, /* special_function */
1509 "R_PPC_TOC16", /* name */
1510 FALSE, /* partial_inplace */
1511 0, /* src_mask */
1512 0xffff, /* dst_mask */
1513 FALSE), /* pcrel_offset */
1514};
1515\f
1516/* Initialize the ppc_elf_howto_table, so that linear accesses can be done. */
1517
1518static void
1519ppc_elf_howto_init (void)
1520{
1521 unsigned int i, type;
1522
1523 for (i = 0;
1524 i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]);
1525 i++)
1526 {
1527 type = ppc_elf_howto_raw[i].type;
1528 if (type >= (sizeof (ppc_elf_howto_table)
1529 / sizeof (ppc_elf_howto_table[0])))
1530 abort ();
1531 ppc_elf_howto_table[type] = &ppc_elf_howto_raw[i];
1532 }
1533}
1534
1535static reloc_howto_type *
1536ppc_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1537 bfd_reloc_code_real_type code)
1538{
1539 enum elf_ppc_reloc_type r;
1540
1541 /* Initialize howto table if not already done. */
1542 if (!ppc_elf_howto_table[R_PPC_ADDR32])
1543 ppc_elf_howto_init ();
1544
1545 switch (code)
1546 {
1547 default:
1548 return NULL;
1549
1550 case BFD_RELOC_NONE: r = R_PPC_NONE; break;
1551 case BFD_RELOC_32: r = R_PPC_ADDR32; break;
1552 case BFD_RELOC_PPC_BA26: r = R_PPC_ADDR24; break;
1553 case BFD_RELOC_16: r = R_PPC_ADDR16; break;
1554 case BFD_RELOC_LO16: r = R_PPC_ADDR16_LO; break;
1555 case BFD_RELOC_HI16: r = R_PPC_ADDR16_HI; break;
1556 case BFD_RELOC_HI16_S: r = R_PPC_ADDR16_HA; break;
1557 case BFD_RELOC_PPC_BA16: r = R_PPC_ADDR14; break;
1558 case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC_ADDR14_BRTAKEN; break;
1559 case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC_ADDR14_BRNTAKEN; break;
1560 case BFD_RELOC_PPC_B26: r = R_PPC_REL24; break;
1561 case BFD_RELOC_PPC_B16: r = R_PPC_REL14; break;
1562 case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC_REL14_BRTAKEN; break;
1563 case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC_REL14_BRNTAKEN; break;
1564 case BFD_RELOC_16_GOTOFF: r = R_PPC_GOT16; break;
1565 case BFD_RELOC_LO16_GOTOFF: r = R_PPC_GOT16_LO; break;
1566 case BFD_RELOC_HI16_GOTOFF: r = R_PPC_GOT16_HI; break;
1567 case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC_GOT16_HA; break;
1568 case BFD_RELOC_24_PLT_PCREL: r = R_PPC_PLTREL24; break;
1569 case BFD_RELOC_PPC_COPY: r = R_PPC_COPY; break;
1570 case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC_GLOB_DAT; break;
1571 case BFD_RELOC_PPC_LOCAL24PC: r = R_PPC_LOCAL24PC; break;
1572 case BFD_RELOC_32_PCREL: r = R_PPC_REL32; break;
1573 case BFD_RELOC_32_PLTOFF: r = R_PPC_PLT32; break;
1574 case BFD_RELOC_32_PLT_PCREL: r = R_PPC_PLTREL32; break;
1575 case BFD_RELOC_LO16_PLTOFF: r = R_PPC_PLT16_LO; break;
1576 case BFD_RELOC_HI16_PLTOFF: r = R_PPC_PLT16_HI; break;
1577 case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC_PLT16_HA; break;
1578 case BFD_RELOC_GPREL16: r = R_PPC_SDAREL16; break;
1579 case BFD_RELOC_16_BASEREL: r = R_PPC_SECTOFF; break;
1580 case BFD_RELOC_LO16_BASEREL: r = R_PPC_SECTOFF_LO; break;
1581 case BFD_RELOC_HI16_BASEREL: r = R_PPC_SECTOFF_HI; break;
1582 case BFD_RELOC_HI16_S_BASEREL: r = R_PPC_SECTOFF_HA; break;
1583 case BFD_RELOC_CTOR: r = R_PPC_ADDR32; break;
1584 case BFD_RELOC_PPC_TOC16: r = R_PPC_TOC16; break;
1585 case BFD_RELOC_PPC_TLS: r = R_PPC_TLS; break;
1586 case BFD_RELOC_PPC_TLSGD: r = R_PPC_TLSGD; break;
1587 case BFD_RELOC_PPC_TLSLD: r = R_PPC_TLSLD; break;
1588 case BFD_RELOC_PPC_DTPMOD: r = R_PPC_DTPMOD32; break;
1589 case BFD_RELOC_PPC_TPREL16: r = R_PPC_TPREL16; break;
1590 case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC_TPREL16_LO; break;
1591 case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC_TPREL16_HI; break;
1592 case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC_TPREL16_HA; break;
1593 case BFD_RELOC_PPC_TPREL: r = R_PPC_TPREL32; break;
1594 case BFD_RELOC_PPC_DTPREL16: r = R_PPC_DTPREL16; break;
1595 case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC_DTPREL16_LO; break;
1596 case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC_DTPREL16_HI; break;
1597 case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC_DTPREL16_HA; break;
1598 case BFD_RELOC_PPC_DTPREL: r = R_PPC_DTPREL32; break;
1599 case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC_GOT_TLSGD16; break;
1600 case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC_GOT_TLSGD16_LO; break;
1601 case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC_GOT_TLSGD16_HI; break;
1602 case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC_GOT_TLSGD16_HA; break;
1603 case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC_GOT_TLSLD16; break;
1604 case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC_GOT_TLSLD16_LO; break;
1605 case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC_GOT_TLSLD16_HI; break;
1606 case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC_GOT_TLSLD16_HA; break;
1607 case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC_GOT_TPREL16; break;
1608 case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC_GOT_TPREL16_LO; break;
1609 case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC_GOT_TPREL16_HI; break;
1610 case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC_GOT_TPREL16_HA; break;
1611 case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC_GOT_DTPREL16; break;
1612 case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC_GOT_DTPREL16_LO; break;
1613 case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC_GOT_DTPREL16_HI; break;
1614 case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC_GOT_DTPREL16_HA; break;
1615 case BFD_RELOC_PPC_EMB_NADDR32: r = R_PPC_EMB_NADDR32; break;
1616 case BFD_RELOC_PPC_EMB_NADDR16: r = R_PPC_EMB_NADDR16; break;
1617 case BFD_RELOC_PPC_EMB_NADDR16_LO: r = R_PPC_EMB_NADDR16_LO; break;
1618 case BFD_RELOC_PPC_EMB_NADDR16_HI: r = R_PPC_EMB_NADDR16_HI; break;
1619 case BFD_RELOC_PPC_EMB_NADDR16_HA: r = R_PPC_EMB_NADDR16_HA; break;
1620 case BFD_RELOC_PPC_EMB_SDAI16: r = R_PPC_EMB_SDAI16; break;
1621 case BFD_RELOC_PPC_EMB_SDA2I16: r = R_PPC_EMB_SDA2I16; break;
1622 case BFD_RELOC_PPC_EMB_SDA2REL: r = R_PPC_EMB_SDA2REL; break;
1623 case BFD_RELOC_PPC_EMB_SDA21: r = R_PPC_EMB_SDA21; break;
1624 case BFD_RELOC_PPC_EMB_MRKREF: r = R_PPC_EMB_MRKREF; break;
1625 case BFD_RELOC_PPC_EMB_RELSEC16: r = R_PPC_EMB_RELSEC16; break;
1626 case BFD_RELOC_PPC_EMB_RELST_LO: r = R_PPC_EMB_RELST_LO; break;
1627 case BFD_RELOC_PPC_EMB_RELST_HI: r = R_PPC_EMB_RELST_HI; break;
1628 case BFD_RELOC_PPC_EMB_RELST_HA: r = R_PPC_EMB_RELST_HA; break;
1629 case BFD_RELOC_PPC_EMB_BIT_FLD: r = R_PPC_EMB_BIT_FLD; break;
1630 case BFD_RELOC_PPC_EMB_RELSDA: r = R_PPC_EMB_RELSDA; break;
1631 case BFD_RELOC_16_PCREL: r = R_PPC_REL16; break;
1632 case BFD_RELOC_LO16_PCREL: r = R_PPC_REL16_LO; break;
1633 case BFD_RELOC_HI16_PCREL: r = R_PPC_REL16_HI; break;
1634 case BFD_RELOC_HI16_S_PCREL: r = R_PPC_REL16_HA; break;
1635 case BFD_RELOC_VTABLE_INHERIT: r = R_PPC_GNU_VTINHERIT; break;
1636 case BFD_RELOC_VTABLE_ENTRY: r = R_PPC_GNU_VTENTRY; break;
1637 }
1638
1639 return ppc_elf_howto_table[r];
1640};
1641
1642static reloc_howto_type *
1643ppc_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1644 const char *r_name)
1645{
1646 unsigned int i;
1647
1648 for (i = 0;
1649 i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]);
1650 i++)
1651 if (ppc_elf_howto_raw[i].name != NULL
1652 && strcasecmp (ppc_elf_howto_raw[i].name, r_name) == 0)
1653 return &ppc_elf_howto_raw[i];
1654
1655 return NULL;
1656}
1657
1658/* Set the howto pointer for a PowerPC ELF reloc. */
1659
1660static void
1661ppc_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED,
1662 arelent *cache_ptr,
1663 Elf_Internal_Rela *dst)
1664{
1665 /* Initialize howto table if not already done. */
1666 if (!ppc_elf_howto_table[R_PPC_ADDR32])
1667 ppc_elf_howto_init ();
1668
1669 BFD_ASSERT (ELF32_R_TYPE (dst->r_info) < (unsigned int) R_PPC_max);
1670 cache_ptr->howto = ppc_elf_howto_table[ELF32_R_TYPE (dst->r_info)];
1671
1672 /* Just because the above assert didn't trigger doesn't mean that
1673 ELF32_R_TYPE (dst->r_info) is necessarily a valid relocation. */
1674 if (!cache_ptr->howto)
1675 {
1676 (*_bfd_error_handler) (_("%B: invalid relocation type %d"),
1677 abfd, ELF32_R_TYPE (dst->r_info));
1678 bfd_set_error (bfd_error_bad_value);
1679
1680 cache_ptr->howto = ppc_elf_howto_table[R_PPC_NONE];
1681 }
1682}
1683
1684/* Handle the R_PPC_ADDR16_HA and R_PPC_REL16_HA relocs. */
1685
1686static bfd_reloc_status_type
1687ppc_elf_addr16_ha_reloc (bfd *abfd ATTRIBUTE_UNUSED,
1688 arelent *reloc_entry,
1689 asymbol *symbol,
1690 void *data ATTRIBUTE_UNUSED,
1691 asection *input_section,
1692 bfd *output_bfd,
1693 char **error_message ATTRIBUTE_UNUSED)
1694{
1695 bfd_vma relocation;
1696
1697 if (output_bfd != NULL)
1698 {
1699 reloc_entry->address += input_section->output_offset;
1700 return bfd_reloc_ok;
1701 }
1702
1703 if (reloc_entry->address > bfd_get_section_limit (abfd, input_section))
1704 return bfd_reloc_outofrange;
1705
1706 if (bfd_is_com_section (symbol->section))
1707 relocation = 0;
1708 else
1709 relocation = symbol->value;
1710
1711 relocation += symbol->section->output_section->vma;
1712 relocation += symbol->section->output_offset;
1713 relocation += reloc_entry->addend;
1714 if (reloc_entry->howto->pc_relative)
1715 relocation -= reloc_entry->address;
1716
1717 reloc_entry->addend += (relocation & 0x8000) << 1;
1718
1719 return bfd_reloc_continue;
1720}
1721
1722static bfd_reloc_status_type
1723ppc_elf_unhandled_reloc (bfd *abfd,
1724 arelent *reloc_entry,
1725 asymbol *symbol,
1726 void *data,
1727 asection *input_section,
1728 bfd *output_bfd,
1729 char **error_message)
1730{
1731 /* If this is a relocatable link (output_bfd test tells us), just
1732 call the generic function. Any adjustment will be done at final
1733 link time. */
1734 if (output_bfd != NULL)
1735 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
1736 input_section, output_bfd, error_message);
1737
1738 if (error_message != NULL)
1739 {
1740 static char buf[60];
1741 sprintf (buf, _("generic linker can't handle %s"),
1742 reloc_entry->howto->name);
1743 *error_message = buf;
1744 }
1745 return bfd_reloc_dangerous;
1746}
1747\f
1748/* Sections created by the linker. */
1749
1750typedef struct elf_linker_section
1751{
1752 /* Pointer to the bfd section. */
1753 asection *section;
1754 /* Section name. */
1755 const char *name;
1756 /* Associated bss section name. */
1757 const char *bss_name;
1758 /* Associated symbol name. */
1759 const char *sym_name;
1760 /* Associated symbol. */
1761 struct elf_link_hash_entry *sym;
1762} elf_linker_section_t;
1763
1764/* Linked list of allocated pointer entries. This hangs off of the
1765 symbol lists, and provides allows us to return different pointers,
1766 based on different addend's. */
1767
1768typedef struct elf_linker_section_pointers
1769{
1770 /* next allocated pointer for this symbol */
1771 struct elf_linker_section_pointers *next;
1772 /* offset of pointer from beginning of section */
1773 bfd_vma offset;
1774 /* addend used */
1775 bfd_vma addend;
1776 /* which linker section this is */
1777 elf_linker_section_t *lsect;
1778} elf_linker_section_pointers_t;
1779
1780struct ppc_elf_obj_tdata
1781{
1782 struct elf_obj_tdata elf;
1783
1784 /* A mapping from local symbols to offsets into the various linker
1785 sections added. This is index by the symbol index. */
1786 elf_linker_section_pointers_t **linker_section_pointers;
1787
1788 /* Flags used to auto-detect plt type. */
1789 unsigned int makes_plt_call : 1;
1790 unsigned int has_rel16 : 1;
1791};
1792
1793#define ppc_elf_tdata(bfd) \
1794 ((struct ppc_elf_obj_tdata *) (bfd)->tdata.any)
1795
1796#define elf_local_ptr_offsets(bfd) \
1797 (ppc_elf_tdata (bfd)->linker_section_pointers)
1798
1799#define is_ppc_elf(bfd) \
1800 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
1801 && elf_object_id (bfd) == PPC32_ELF_DATA)
1802
1803/* Override the generic function because we store some extras. */
1804
1805static bfd_boolean
1806ppc_elf_mkobject (bfd *abfd)
1807{
1808 return bfd_elf_allocate_object (abfd, sizeof (struct ppc_elf_obj_tdata),
1809 PPC32_ELF_DATA);
1810}
1811
1812/* Fix bad default arch selected for a 32 bit input bfd when the
1813 default is 64 bit. */
1814
1815static bfd_boolean
1816ppc_elf_object_p (bfd *abfd)
1817{
1818 if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 64)
1819 {
1820 Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd);
1821
1822 if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS32)
1823 {
1824 /* Relies on arch after 64 bit default being 32 bit default. */
1825 abfd->arch_info = abfd->arch_info->next;
1826 BFD_ASSERT (abfd->arch_info->bits_per_word == 32);
1827 }
1828 }
1829 return TRUE;
1830}
1831
1832/* Function to set whether a module needs the -mrelocatable bit set. */
1833
1834static bfd_boolean
1835ppc_elf_set_private_flags (bfd *abfd, flagword flags)
1836{
1837 BFD_ASSERT (!elf_flags_init (abfd)
1838 || elf_elfheader (abfd)->e_flags == flags);
1839
1840 elf_elfheader (abfd)->e_flags = flags;
1841 elf_flags_init (abfd) = TRUE;
1842 return TRUE;
1843}
1844
1845/* Support for core dump NOTE sections. */
1846
1847static bfd_boolean
1848ppc_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
1849{
1850 int offset;
1851 unsigned int size;
1852
1853 switch (note->descsz)
1854 {
1855 default:
1856 return FALSE;
1857
1858 case 268: /* Linux/PPC. */
1859 /* pr_cursig */
1860 elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
1861
1862 /* pr_pid */
1863 elf_tdata (abfd)->core_lwpid = bfd_get_32 (abfd, note->descdata + 24);
1864
1865 /* pr_reg */
1866 offset = 72;
1867 size = 192;
1868
1869 break;
1870 }
1871
1872 /* Make a ".reg/999" section. */
1873 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
1874 size, note->descpos + offset);
1875}
1876
1877static bfd_boolean
1878ppc_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
1879{
1880 switch (note->descsz)
1881 {
1882 default:
1883 return FALSE;
1884
1885 case 128: /* Linux/PPC elf_prpsinfo. */
1886 elf_tdata (abfd)->core_pid
1887 = bfd_get_32 (abfd, note->descdata + 16);
1888 elf_tdata (abfd)->core_program
1889 = _bfd_elfcore_strndup (abfd, note->descdata + 32, 16);
1890 elf_tdata (abfd)->core_command
1891 = _bfd_elfcore_strndup (abfd, note->descdata + 48, 80);
1892 }
1893
1894 /* Note that for some reason, a spurious space is tacked
1895 onto the end of the args in some (at least one anyway)
1896 implementations, so strip it off if it exists. */
1897
1898 {
1899 char *command = elf_tdata (abfd)->core_command;
1900 int n = strlen (command);
1901
1902 if (0 < n && command[n - 1] == ' ')
1903 command[n - 1] = '\0';
1904 }
1905
1906 return TRUE;
1907}
1908
1909static char *
1910ppc_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type, ...)
1911{
1912 switch (note_type)
1913 {
1914 default:
1915 return NULL;
1916
1917 case NT_PRPSINFO:
1918 {
1919 char data[128];
1920 va_list ap;
1921
1922 va_start (ap, note_type);
1923 memset (data, 0, sizeof (data));
1924 strncpy (data + 32, va_arg (ap, const char *), 16);
1925 strncpy (data + 48, va_arg (ap, const char *), 80);
1926 va_end (ap);
1927 return elfcore_write_note (abfd, buf, bufsiz,
1928 "CORE", note_type, data, sizeof (data));
1929 }
1930
1931 case NT_PRSTATUS:
1932 {
1933 char data[268];
1934 va_list ap;
1935 long pid;
1936 int cursig;
1937 const void *greg;
1938
1939 va_start (ap, note_type);
1940 memset (data, 0, 72);
1941 pid = va_arg (ap, long);
1942 bfd_put_32 (abfd, pid, data + 24);
1943 cursig = va_arg (ap, int);
1944 bfd_put_16 (abfd, cursig, data + 12);
1945 greg = va_arg (ap, const void *);
1946 memcpy (data + 72, greg, 192);
1947 memset (data + 264, 0, 4);
1948 va_end (ap);
1949 return elfcore_write_note (abfd, buf, bufsiz,
1950 "CORE", note_type, data, sizeof (data));
1951 }
1952 }
1953}
1954
1955/* Return address for Ith PLT stub in section PLT, for relocation REL
1956 or (bfd_vma) -1 if it should not be included. */
1957
1958static bfd_vma
1959ppc_elf_plt_sym_val (bfd_vma i ATTRIBUTE_UNUSED,
1960 const asection *plt ATTRIBUTE_UNUSED,
1961 const arelent *rel)
1962{
1963 return rel->address;
1964}
1965
1966/* Handle a PowerPC specific section when reading an object file. This
1967 is called when bfd_section_from_shdr finds a section with an unknown
1968 type. */
1969
1970static bfd_boolean
1971ppc_elf_section_from_shdr (bfd *abfd,
1972 Elf_Internal_Shdr *hdr,
1973 const char *name,
1974 int shindex)
1975{
1976 asection *newsect;
1977 flagword flags;
1978
1979 if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
1980 return FALSE;
1981
1982 newsect = hdr->bfd_section;
1983 flags = bfd_get_section_flags (abfd, newsect);
1984 if (hdr->sh_flags & SHF_EXCLUDE)
1985 flags |= SEC_EXCLUDE;
1986
1987 if (hdr->sh_type == SHT_ORDERED)
1988 flags |= SEC_SORT_ENTRIES;
1989
1990 bfd_set_section_flags (abfd, newsect, flags);
1991 return TRUE;
1992}
1993
1994/* Set up any other section flags and such that may be necessary. */
1995
1996static bfd_boolean
1997ppc_elf_fake_sections (bfd *abfd ATTRIBUTE_UNUSED,
1998 Elf_Internal_Shdr *shdr,
1999 asection *asect)
2000{
2001 if ((asect->flags & SEC_SORT_ENTRIES) != 0)
2002 shdr->sh_type = SHT_ORDERED;
2003
2004 return TRUE;
2005}
2006
2007/* If we have .sbss2 or .PPC.EMB.sbss0 output sections, we
2008 need to bump up the number of section headers. */
2009
2010static int
2011ppc_elf_additional_program_headers (bfd *abfd,
2012 struct bfd_link_info *info ATTRIBUTE_UNUSED)
2013{
2014 asection *s;
2015 int ret = 0;
2016
2017 s = bfd_get_section_by_name (abfd, ".sbss2");
2018 if (s != NULL && (s->flags & SEC_ALLOC) != 0)
2019 ++ret;
2020
2021 s = bfd_get_section_by_name (abfd, ".PPC.EMB.sbss0");
2022 if (s != NULL && (s->flags & SEC_ALLOC) != 0)
2023 ++ret;
2024
2025 return ret;
2026}
2027
2028/* Add extra PPC sections -- Note, for now, make .sbss2 and
2029 .PPC.EMB.sbss0 a normal section, and not a bss section so
2030 that the linker doesn't crater when trying to make more than
2031 2 sections. */
2032
2033static const struct bfd_elf_special_section ppc_elf_special_sections[] =
2034{
2035 { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, SHF_ALLOC + SHF_EXECINSTR },
2036 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2037 { STRING_COMMA_LEN (".sbss2"), -2, SHT_PROGBITS, SHF_ALLOC },
2038 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2039 { STRING_COMMA_LEN (".sdata2"), -2, SHT_PROGBITS, SHF_ALLOC },
2040 { STRING_COMMA_LEN (".tags"), 0, SHT_ORDERED, SHF_ALLOC },
2041 { STRING_COMMA_LEN (".PPC.EMB.apuinfo"), 0, SHT_NOTE, 0 },
2042 { STRING_COMMA_LEN (".PPC.EMB.sbss0"), 0, SHT_PROGBITS, SHF_ALLOC },
2043 { STRING_COMMA_LEN (".PPC.EMB.sdata0"), 0, SHT_PROGBITS, SHF_ALLOC },
2044 { NULL, 0, 0, 0, 0 }
2045};
2046
2047/* This is what we want for new plt/got. */
2048static struct bfd_elf_special_section ppc_alt_plt =
2049 { STRING_COMMA_LEN (".plt"), 0, SHT_PROGBITS, SHF_ALLOC };
2050
2051static const struct bfd_elf_special_section *
2052ppc_elf_get_sec_type_attr (bfd *abfd ATTRIBUTE_UNUSED, asection *sec)
2053{
2054 const struct bfd_elf_special_section *ssect;
2055
2056 /* See if this is one of the special sections. */
2057 if (sec->name == NULL)
2058 return NULL;
2059
2060 ssect = _bfd_elf_get_special_section (sec->name, ppc_elf_special_sections,
2061 sec->use_rela_p);
2062 if (ssect != NULL)
2063 {
2064 if (ssect == ppc_elf_special_sections && (sec->flags & SEC_LOAD) != 0)
2065 ssect = &ppc_alt_plt;
2066 return ssect;
2067 }
2068
2069 return _bfd_elf_get_sec_type_attr (abfd, sec);
2070}
2071\f
2072/* Very simple linked list structure for recording apuinfo values. */
2073typedef struct apuinfo_list
2074{
2075 struct apuinfo_list *next;
2076 unsigned long value;
2077}
2078apuinfo_list;
2079
2080static apuinfo_list *head;
2081static bfd_boolean apuinfo_set;
2082
2083static void
2084apuinfo_list_init (void)
2085{
2086 head = NULL;
2087 apuinfo_set = FALSE;
2088}
2089
2090static void
2091apuinfo_list_add (unsigned long value)
2092{
2093 apuinfo_list *entry = head;
2094
2095 while (entry != NULL)
2096 {
2097 if (entry->value == value)
2098 return;
2099 entry = entry->next;
2100 }
2101
2102 entry = bfd_malloc (sizeof (* entry));
2103 if (entry == NULL)
2104 return;
2105
2106 entry->value = value;
2107 entry->next = head;
2108 head = entry;
2109}
2110
2111static unsigned
2112apuinfo_list_length (void)
2113{
2114 apuinfo_list *entry;
2115 unsigned long count;
2116
2117 for (entry = head, count = 0;
2118 entry;
2119 entry = entry->next)
2120 ++ count;
2121
2122 return count;
2123}
2124
2125static inline unsigned long
2126apuinfo_list_element (unsigned long number)
2127{
2128 apuinfo_list * entry;
2129
2130 for (entry = head;
2131 entry && number --;
2132 entry = entry->next)
2133 ;
2134
2135 return entry ? entry->value : 0;
2136}
2137
2138static void
2139apuinfo_list_finish (void)
2140{
2141 apuinfo_list *entry;
2142
2143 for (entry = head; entry;)
2144 {
2145 apuinfo_list *next = entry->next;
2146 free (entry);
2147 entry = next;
2148 }
2149
2150 head = NULL;
2151}
2152
2153#define APUINFO_SECTION_NAME ".PPC.EMB.apuinfo"
2154#define APUINFO_LABEL "APUinfo"
2155
2156/* Scan the input BFDs and create a linked list of
2157 the APUinfo values that will need to be emitted. */
2158
2159static void
2160ppc_elf_begin_write_processing (bfd *abfd, struct bfd_link_info *link_info)
2161{
2162 bfd *ibfd;
2163 asection *asec;
2164 char *buffer = NULL;
2165 bfd_size_type largest_input_size = 0;
2166 unsigned i;
2167 unsigned long length;
2168 const char *error_message = NULL;
2169
2170 if (link_info == NULL)
2171 return;
2172
2173 apuinfo_list_init ();
2174
2175 /* Read in the input sections contents. */
2176 for (ibfd = link_info->input_bfds; ibfd; ibfd = ibfd->link_next)
2177 {
2178 unsigned long datum;
2179
2180 asec = bfd_get_section_by_name (ibfd, APUINFO_SECTION_NAME);
2181 if (asec == NULL)
2182 continue;
2183
2184 error_message = _("corrupt %s section in %B");
2185 length = asec->size;
2186 if (length < 20)
2187 goto fail;
2188
2189 apuinfo_set = TRUE;
2190 if (largest_input_size < asec->size)
2191 {
2192 if (buffer)
2193 free (buffer);
2194 largest_input_size = asec->size;
2195 buffer = bfd_malloc (largest_input_size);
2196 if (!buffer)
2197 return;
2198 }
2199
2200 if (bfd_seek (ibfd, asec->filepos, SEEK_SET) != 0
2201 || (bfd_bread (buffer, length, ibfd) != length))
2202 {
2203 error_message = _("unable to read in %s section from %B");
2204 goto fail;
2205 }
2206
2207 /* Verify the contents of the header. Note - we have to
2208 extract the values this way in order to allow for a
2209 host whose endian-ness is different from the target. */
2210 datum = bfd_get_32 (ibfd, buffer);
2211 if (datum != sizeof APUINFO_LABEL)
2212 goto fail;
2213
2214 datum = bfd_get_32 (ibfd, buffer + 8);
2215 if (datum != 0x2)
2216 goto fail;
2217
2218 if (strcmp (buffer + 12, APUINFO_LABEL) != 0)
2219 goto fail;
2220
2221 /* Get the number of bytes used for apuinfo entries. */
2222 datum = bfd_get_32 (ibfd, buffer + 4);
2223 if (datum + 20 != length)
2224 goto fail;
2225
2226 /* Scan the apuinfo section, building a list of apuinfo numbers. */
2227 for (i = 0; i < datum; i += 4)
2228 apuinfo_list_add (bfd_get_32 (ibfd, buffer + 20 + i));
2229 }
2230
2231 error_message = NULL;
2232
2233 if (apuinfo_set)
2234 {
2235 /* Compute the size of the output section. */
2236 unsigned num_entries = apuinfo_list_length ();
2237
2238 /* Set the output section size, if it exists. */
2239 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2240
2241 if (asec && ! bfd_set_section_size (abfd, asec, 20 + num_entries * 4))
2242 {
2243 ibfd = abfd;
2244 error_message = _("warning: unable to set size of %s section in %B");
2245 }
2246 }
2247
2248 fail:
2249 if (buffer)
2250 free (buffer);
2251
2252 if (error_message)
2253 (*_bfd_error_handler) (error_message, ibfd, APUINFO_SECTION_NAME);
2254}
2255
2256/* Prevent the output section from accumulating the input sections'
2257 contents. We have already stored this in our linked list structure. */
2258
2259static bfd_boolean
2260ppc_elf_write_section (bfd *abfd ATTRIBUTE_UNUSED,
2261 struct bfd_link_info *link_info ATTRIBUTE_UNUSED,
2262 asection *asec,
2263 bfd_byte *contents ATTRIBUTE_UNUSED)
2264{
2265 return apuinfo_set && strcmp (asec->name, APUINFO_SECTION_NAME) == 0;
2266}
2267
2268/* Finally we can generate the output section. */
2269
2270static void
2271ppc_elf_final_write_processing (bfd *abfd, bfd_boolean linker ATTRIBUTE_UNUSED)
2272{
2273 bfd_byte *buffer;
2274 asection *asec;
2275 unsigned i;
2276 unsigned num_entries;
2277 bfd_size_type length;
2278
2279 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2280 if (asec == NULL)
2281 return;
2282
2283 if (!apuinfo_set)
2284 return;
2285
2286 length = asec->size;
2287 if (length < 20)
2288 return;
2289
2290 buffer = bfd_malloc (length);
2291 if (buffer == NULL)
2292 {
2293 (*_bfd_error_handler)
2294 (_("failed to allocate space for new APUinfo section."));
2295 return;
2296 }
2297
2298 /* Create the apuinfo header. */
2299 num_entries = apuinfo_list_length ();
2300 bfd_put_32 (abfd, sizeof APUINFO_LABEL, buffer);
2301 bfd_put_32 (abfd, num_entries * 4, buffer + 4);
2302 bfd_put_32 (abfd, 0x2, buffer + 8);
2303 strcpy ((char *) buffer + 12, APUINFO_LABEL);
2304
2305 length = 20;
2306 for (i = 0; i < num_entries; i++)
2307 {
2308 bfd_put_32 (abfd, apuinfo_list_element (i), buffer + length);
2309 length += 4;
2310 }
2311
2312 if (length != asec->size)
2313 (*_bfd_error_handler) (_("failed to compute new APUinfo section."));
2314
2315 if (! bfd_set_section_contents (abfd, asec, buffer, (file_ptr) 0, length))
2316 (*_bfd_error_handler) (_("failed to install new APUinfo section."));
2317
2318 free (buffer);
2319
2320 apuinfo_list_finish ();
2321}
2322\f
2323static bfd_boolean
2324is_nonpic_glink_stub (bfd *abfd, asection *glink, bfd_vma off)
2325{
2326 bfd_byte buf[GLINK_ENTRY_SIZE];
2327
2328 if (!bfd_get_section_contents (abfd, glink, buf, off, GLINK_ENTRY_SIZE))
2329 return FALSE;
2330
2331 return ((bfd_get_32 (abfd, buf + 0) & 0xffff0000) == LIS_11
2332 && (bfd_get_32 (abfd, buf + 4) & 0xffff0000) == LWZ_11_11
2333 && bfd_get_32 (abfd, buf + 8) == MTCTR_11
2334 && bfd_get_32 (abfd, buf + 12) == BCTR);
2335}
2336
2337static bfd_boolean
2338section_covers_vma (bfd *abfd ATTRIBUTE_UNUSED, asection *section, void *ptr)
2339{
2340 bfd_vma vma = *(bfd_vma *) ptr;
2341 return ((section->flags & SEC_ALLOC) != 0
2342 && section->vma <= vma
2343 && vma < section->vma + section->size);
2344}
2345
2346static long
2347ppc_elf_get_synthetic_symtab (bfd *abfd, long symcount, asymbol **syms,
2348 long dynsymcount, asymbol **dynsyms,
2349 asymbol **ret)
2350{
2351 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
2352 asection *plt, *relplt, *dynamic, *glink;
2353 bfd_vma glink_vma = 0;
2354 bfd_vma resolv_vma = 0;
2355 bfd_vma stub_vma;
2356 asymbol *s;
2357 arelent *p;
2358 long count, i;
2359 size_t size;
2360 char *names;
2361 bfd_byte buf[4];
2362
2363 *ret = NULL;
2364
2365 if ((abfd->flags & (DYNAMIC | EXEC_P)) == 0)
2366 return 0;
2367
2368 if (dynsymcount <= 0)
2369 return 0;
2370
2371 relplt = bfd_get_section_by_name (abfd, ".rela.plt");
2372 if (relplt == NULL)
2373 return 0;
2374
2375 plt = bfd_get_section_by_name (abfd, ".plt");
2376 if (plt == NULL)
2377 return 0;
2378
2379 /* Call common code to handle old-style executable PLTs. */
2380 if (elf_section_flags (plt) & SHF_EXECINSTR)
2381 return _bfd_elf_get_synthetic_symtab (abfd, symcount, syms,
2382 dynsymcount, dynsyms, ret);
2383
2384 /* If this object was prelinked, the prelinker stored the address
2385 of .glink at got[1]. If it wasn't prelinked, got[1] will be zero. */
2386 dynamic = bfd_get_section_by_name (abfd, ".dynamic");
2387 if (dynamic != NULL)
2388 {
2389 bfd_byte *dynbuf, *extdyn, *extdynend;
2390 size_t extdynsize;
2391 void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *);
2392
2393 if (!bfd_malloc_and_get_section (abfd, dynamic, &dynbuf))
2394 return -1;
2395
2396 extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn;
2397 swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in;
2398
2399 extdyn = dynbuf;
2400 extdynend = extdyn + dynamic->size;
2401 for (; extdyn < extdynend; extdyn += extdynsize)
2402 {
2403 Elf_Internal_Dyn dyn;
2404 (*swap_dyn_in) (abfd, extdyn, &dyn);
2405
2406 if (dyn.d_tag == DT_NULL)
2407 break;
2408
2409 if (dyn.d_tag == DT_PPC_GOT)
2410 {
2411 unsigned int g_o_t = dyn.d_un.d_val;
2412 asection *got = bfd_get_section_by_name (abfd, ".got");
2413 if (got != NULL
2414 && bfd_get_section_contents (abfd, got, buf,
2415 g_o_t - got->vma + 4, 4))
2416 glink_vma = bfd_get_32 (abfd, buf);
2417 break;
2418 }
2419 }
2420 free (dynbuf);
2421 }
2422
2423 /* Otherwise we read the first plt entry. */
2424 if (glink_vma == 0)
2425 {
2426 if (bfd_get_section_contents (abfd, plt, buf, 0, 4))
2427 glink_vma = bfd_get_32 (abfd, buf);
2428 }
2429
2430 if (glink_vma == 0)
2431 return 0;
2432
2433 /* The .glink section usually does not survive the final
2434 link; search for the section (usually .text) where the
2435 glink stubs now reside. */
2436 glink = bfd_sections_find_if (abfd, section_covers_vma, &glink_vma);
2437 if (glink == NULL)
2438 return 0;
2439
2440 /* Determine glink PLT resolver by reading the relative branch
2441 from the first glink stub. */
2442 if (bfd_get_section_contents (abfd, glink, buf,
2443 glink_vma - glink->vma, 4))
2444 {
2445 unsigned int insn = bfd_get_32 (abfd, buf);
2446
2447 /* The first glink stub may either branch to the resolver ... */
2448 insn ^= B;
2449 if ((insn & ~0x3fffffc) == 0)
2450 resolv_vma = glink_vma + (insn ^ 0x2000000) - 0x2000000;
2451
2452 /* ... or fall through a bunch of NOPs. */
2453 else if ((insn ^ B ^ NOP) == 0)
2454 for (i = 4;
2455 bfd_get_section_contents (abfd, glink, buf,
2456 glink_vma - glink->vma + i, 4);
2457 i += 4)
2458 if (bfd_get_32 (abfd, buf) != NOP)
2459 {
2460 resolv_vma = glink_vma + i;
2461 break;
2462 }
2463 }
2464
2465 count = relplt->size / sizeof (Elf32_External_Rela);
2466 stub_vma = glink_vma - (bfd_vma) count * 16;
2467 /* If the stubs are those for -shared/-pie then we might have
2468 multiple stubs for each plt entry. If that is the case then
2469 there is no way to associate stubs with their plt entries short
2470 of figuring out the GOT pointer value used in the stub. */
2471 if (!is_nonpic_glink_stub (abfd, glink,
2472 glink_vma - GLINK_ENTRY_SIZE - glink->vma))
2473 return 0;
2474
2475 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
2476 if (! (*slurp_relocs) (abfd, relplt, dynsyms, TRUE))
2477 return -1;
2478
2479 size = count * sizeof (asymbol);
2480 p = relplt->relocation;
2481 for (i = 0; i < count; i++, p++)
2482 {
2483 size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt");
2484 if (p->addend != 0)
2485 size += sizeof ("+0x") - 1 + 8;
2486 }
2487
2488 size += sizeof (asymbol) + sizeof ("__glink");
2489
2490 if (resolv_vma)
2491 size += sizeof (asymbol) + sizeof ("__glink_PLTresolve");
2492
2493 s = *ret = bfd_malloc (size);
2494 if (s == NULL)
2495 return -1;
2496
2497 names = (char *) (s + count + 1 + (resolv_vma != 0));
2498 p = relplt->relocation;
2499 for (i = 0; i < count; i++, p++)
2500 {
2501 size_t len;
2502
2503 *s = **p->sym_ptr_ptr;
2504 /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since
2505 we are defining a symbol, ensure one of them is set. */
2506 if ((s->flags & BSF_LOCAL) == 0)
2507 s->flags |= BSF_GLOBAL;
2508 s->flags |= BSF_SYNTHETIC;
2509 s->section = glink;
2510 s->value = stub_vma - glink->vma;
2511 s->name = names;
2512 s->udata.p = NULL;
2513 len = strlen ((*p->sym_ptr_ptr)->name);
2514 memcpy (names, (*p->sym_ptr_ptr)->name, len);
2515 names += len;
2516 if (p->addend != 0)
2517 {
2518 memcpy (names, "+0x", sizeof ("+0x") - 1);
2519 names += sizeof ("+0x") - 1;
2520 bfd_sprintf_vma (abfd, names, p->addend);
2521 names += strlen (names);
2522 }
2523 memcpy (names, "@plt", sizeof ("@plt"));
2524 names += sizeof ("@plt");
2525 ++s;
2526 stub_vma += 16;
2527 }
2528
2529 /* Add a symbol at the start of the glink branch table. */
2530 memset (s, 0, sizeof *s);
2531 s->the_bfd = abfd;
2532 s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
2533 s->section = glink;
2534 s->value = glink_vma - glink->vma;
2535 s->name = names;
2536 memcpy (names, "__glink", sizeof ("__glink"));
2537 names += sizeof ("__glink");
2538 s++;
2539 count++;
2540
2541 if (resolv_vma)
2542 {
2543 /* Add a symbol for the glink PLT resolver. */
2544 memset (s, 0, sizeof *s);
2545 s->the_bfd = abfd;
2546 s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
2547 s->section = glink;
2548 s->value = resolv_vma - glink->vma;
2549 s->name = names;
2550 memcpy (names, "__glink_PLTresolve", sizeof ("__glink_PLTresolve"));
2551 names += sizeof ("__glink_PLTresolve");
2552 s++;
2553 count++;
2554 }
2555
2556 return count;
2557}
2558\f
2559/* The following functions are specific to the ELF linker, while
2560 functions above are used generally. They appear in this file more
2561 or less in the order in which they are called. eg.
2562 ppc_elf_check_relocs is called early in the link process,
2563 ppc_elf_finish_dynamic_sections is one of the last functions
2564 called. */
2565
2566/* Track PLT entries needed for a given symbol. We might need more
2567 than one glink entry per symbol when generating a pic binary. */
2568struct plt_entry
2569{
2570 struct plt_entry *next;
2571
2572 /* -fPIC uses multiple GOT sections, one per file, called ".got2".
2573 This field stores the offset into .got2 used to initialise the
2574 GOT pointer reg. It will always be at least 32768. (Current
2575 gcc always uses an offset of 32768, but ld -r will pack .got2
2576 sections together resulting in larger offsets). */
2577 bfd_vma addend;
2578
2579 /* The .got2 section. */
2580 asection *sec;
2581
2582 /* PLT refcount or offset. */
2583 union
2584 {
2585 bfd_signed_vma refcount;
2586 bfd_vma offset;
2587 } plt;
2588
2589 /* .glink stub offset. */
2590 bfd_vma glink_offset;
2591};
2592
2593/* Of those relocs that might be copied as dynamic relocs, this function
2594 selects those that must be copied when linking a shared library,
2595 even when the symbol is local. */
2596
2597static int
2598must_be_dyn_reloc (struct bfd_link_info *info,
2599 enum elf_ppc_reloc_type r_type)
2600{
2601 switch (r_type)
2602 {
2603 default:
2604 return 1;
2605
2606 case R_PPC_REL24:
2607 case R_PPC_REL14:
2608 case R_PPC_REL14_BRTAKEN:
2609 case R_PPC_REL14_BRNTAKEN:
2610 case R_PPC_REL32:
2611 return 0;
2612
2613 case R_PPC_TPREL32:
2614 case R_PPC_TPREL16:
2615 case R_PPC_TPREL16_LO:
2616 case R_PPC_TPREL16_HI:
2617 case R_PPC_TPREL16_HA:
2618 return !info->executable;
2619 }
2620}
2621
2622/* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
2623 copying dynamic variables from a shared lib into an app's dynbss
2624 section, and instead use a dynamic relocation to point into the
2625 shared lib. */
2626#define ELIMINATE_COPY_RELOCS 1
2627
2628/* PPC ELF linker hash entry. */
2629
2630struct ppc_elf_link_hash_entry
2631{
2632 struct elf_link_hash_entry elf;
2633
2634 /* If this symbol is used in the linker created sections, the processor
2635 specific backend uses this field to map the field into the offset
2636 from the beginning of the section. */
2637 elf_linker_section_pointers_t *linker_section_pointer;
2638
2639 /* Track dynamic relocs copied for this symbol. */
2640 struct elf_dyn_relocs *dyn_relocs;
2641
2642 /* Contexts in which symbol is used in the GOT (or TOC).
2643 TLS_GD .. TLS_TLS bits are or'd into the mask as the
2644 corresponding relocs are encountered during check_relocs.
2645 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
2646 indicate the corresponding GOT entry type is not needed. */
2647#define TLS_GD 1 /* GD reloc. */
2648#define TLS_LD 2 /* LD reloc. */
2649#define TLS_TPREL 4 /* TPREL reloc, => IE. */
2650#define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
2651#define TLS_TLS 16 /* Any TLS reloc. */
2652#define TLS_TPRELGD 32 /* TPREL reloc resulting from GD->IE. */
2653#define PLT_IFUNC 64 /* STT_GNU_IFUNC. */
2654 char tls_mask;
2655
2656 /* Nonzero if we have seen a small data relocation referring to this
2657 symbol. */
2658 unsigned char has_sda_refs;
2659};
2660
2661#define ppc_elf_hash_entry(ent) ((struct ppc_elf_link_hash_entry *) (ent))
2662
2663/* PPC ELF linker hash table. */
2664
2665struct ppc_elf_link_hash_table
2666{
2667 struct elf_link_hash_table elf;
2668
2669 /* Short-cuts to get to dynamic linker sections. */
2670 asection *got;
2671 asection *relgot;
2672 asection *glink;
2673 asection *plt;
2674 asection *relplt;
2675 asection *iplt;
2676 asection *reliplt;
2677 asection *dynbss;
2678 asection *relbss;
2679 asection *dynsbss;
2680 asection *relsbss;
2681 elf_linker_section_t sdata[2];
2682 asection *sbss;
2683 asection *glink_eh_frame;
2684
2685 /* The (unloaded but important) .rela.plt.unloaded on VxWorks. */
2686 asection *srelplt2;
2687
2688 /* The .got.plt section (VxWorks only)*/
2689 asection *sgotplt;
2690
2691 /* Shortcut to __tls_get_addr. */
2692 struct elf_link_hash_entry *tls_get_addr;
2693
2694 /* The bfd that forced an old-style PLT. */
2695 bfd *old_bfd;
2696
2697 /* TLS local dynamic got entry handling. */
2698 union {
2699 bfd_signed_vma refcount;
2700 bfd_vma offset;
2701 } tlsld_got;
2702
2703 /* Offset of branch table to PltResolve function in glink. */
2704 bfd_vma glink_pltresolve;
2705
2706 /* Size of reserved GOT entries. */
2707 unsigned int got_header_size;
2708 /* Non-zero if allocating the header left a gap. */
2709 unsigned int got_gap;
2710
2711 /* The type of PLT we have chosen to use. */
2712 enum ppc_elf_plt_type plt_type;
2713
2714 /* Set if we should emit symbols for stubs. */
2715 unsigned int emit_stub_syms:1;
2716
2717 /* Set if __tls_get_addr optimization should not be done. */
2718 unsigned int no_tls_get_addr_opt:1;
2719
2720 /* True if the target system is VxWorks. */
2721 unsigned int is_vxworks:1;
2722
2723 /* The size of PLT entries. */
2724 int plt_entry_size;
2725 /* The distance between adjacent PLT slots. */
2726 int plt_slot_size;
2727 /* The size of the first PLT entry. */
2728 int plt_initial_entry_size;
2729
2730 /* Small local sym cache. */
2731 struct sym_cache sym_cache;
2732};
2733
2734/* Rename some of the generic section flags to better document how they
2735 are used here. */
2736
2737/* Nonzero if this section has TLS related relocations. */
2738#define has_tls_reloc sec_flg0
2739
2740/* Nonzero if this section has a call to __tls_get_addr. */
2741#define has_tls_get_addr_call sec_flg1
2742
2743/* Get the PPC ELF linker hash table from a link_info structure. */
2744
2745#define ppc_elf_hash_table(p) \
2746 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
2747 == PPC32_ELF_DATA ? ((struct ppc_elf_link_hash_table *) ((p)->hash)) : NULL)
2748
2749/* Create an entry in a PPC ELF linker hash table. */
2750
2751static struct bfd_hash_entry *
2752ppc_elf_link_hash_newfunc (struct bfd_hash_entry *entry,
2753 struct bfd_hash_table *table,
2754 const char *string)
2755{
2756 /* Allocate the structure if it has not already been allocated by a
2757 subclass. */
2758 if (entry == NULL)
2759 {
2760 entry = bfd_hash_allocate (table,
2761 sizeof (struct ppc_elf_link_hash_entry));
2762 if (entry == NULL)
2763 return entry;
2764 }
2765
2766 /* Call the allocation method of the superclass. */
2767 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
2768 if (entry != NULL)
2769 {
2770 ppc_elf_hash_entry (entry)->linker_section_pointer = NULL;
2771 ppc_elf_hash_entry (entry)->dyn_relocs = NULL;
2772 ppc_elf_hash_entry (entry)->tls_mask = 0;
2773 ppc_elf_hash_entry (entry)->has_sda_refs = 0;
2774 }
2775
2776 return entry;
2777}
2778
2779/* Create a PPC ELF linker hash table. */
2780
2781static struct bfd_link_hash_table *
2782ppc_elf_link_hash_table_create (bfd *abfd)
2783{
2784 struct ppc_elf_link_hash_table *ret;
2785
2786 ret = bfd_zmalloc (sizeof (struct ppc_elf_link_hash_table));
2787 if (ret == NULL)
2788 return NULL;
2789
2790 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd,
2791 ppc_elf_link_hash_newfunc,
2792 sizeof (struct ppc_elf_link_hash_entry),
2793 PPC32_ELF_DATA))
2794 {
2795 free (ret);
2796 return NULL;
2797 }
2798
2799 ret->elf.init_plt_refcount.refcount = 0;
2800 ret->elf.init_plt_refcount.glist = NULL;
2801 ret->elf.init_plt_offset.offset = 0;
2802 ret->elf.init_plt_offset.glist = NULL;
2803
2804 ret->sdata[0].name = ".sdata";
2805 ret->sdata[0].sym_name = "_SDA_BASE_";
2806 ret->sdata[0].bss_name = ".sbss";
2807
2808 ret->sdata[1].name = ".sdata2";
2809 ret->sdata[1].sym_name = "_SDA2_BASE_";
2810 ret->sdata[1].bss_name = ".sbss2";
2811
2812 ret->plt_entry_size = 12;
2813 ret->plt_slot_size = 8;
2814 ret->plt_initial_entry_size = 72;
2815
2816 return &ret->elf.root;
2817}
2818
2819/* Create .got and the related sections. */
2820
2821static bfd_boolean
2822ppc_elf_create_got (bfd *abfd, struct bfd_link_info *info)
2823{
2824 struct ppc_elf_link_hash_table *htab;
2825 asection *s;
2826 flagword flags;
2827
2828 if (!_bfd_elf_create_got_section (abfd, info))
2829 return FALSE;
2830
2831 htab = ppc_elf_hash_table (info);
2832 htab->got = s = bfd_get_section_by_name (abfd, ".got");
2833 if (s == NULL)
2834 abort ();
2835
2836 if (htab->is_vxworks)
2837 {
2838 htab->sgotplt = bfd_get_section_by_name (abfd, ".got.plt");
2839 if (!htab->sgotplt)
2840 abort ();
2841 }
2842 else
2843 {
2844 /* The powerpc .got has a blrl instruction in it. Mark it
2845 executable. */
2846 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS
2847 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
2848 if (!bfd_set_section_flags (abfd, s, flags))
2849 return FALSE;
2850 }
2851
2852 htab->relgot = bfd_get_section_by_name (abfd, ".rela.got");
2853 if (!htab->relgot)
2854 abort ();
2855
2856 return TRUE;
2857}
2858
2859static bfd_boolean
2860ppc_elf_create_glink (bfd *abfd, struct bfd_link_info *info)
2861{
2862 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
2863 asection *s;
2864 flagword flags;
2865
2866 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY | SEC_HAS_CONTENTS
2867 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
2868 s = bfd_make_section_anyway_with_flags (abfd, ".glink", flags);
2869 htab->glink = s;
2870 if (s == NULL
2871 || !bfd_set_section_alignment (abfd, s, 4))
2872 return FALSE;
2873
2874 if (!info->no_ld_generated_unwind_info)
2875 {
2876 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
2877 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
2878 s = bfd_make_section_anyway_with_flags (abfd, ".eh_frame", flags);
2879 htab->glink_eh_frame = s;
2880 if (s == NULL
2881 || !bfd_set_section_alignment (abfd, s, 2))
2882 return FALSE;
2883 }
2884
2885 flags = SEC_ALLOC | SEC_LINKER_CREATED;
2886 s = bfd_make_section_anyway_with_flags (abfd, ".iplt", flags);
2887 htab->iplt = s;
2888 if (s == NULL
2889 || !bfd_set_section_alignment (abfd, s, 4))
2890 return FALSE;
2891
2892 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
2893 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
2894 s = bfd_make_section_anyway_with_flags (abfd, ".rela.iplt", flags);
2895 htab->reliplt = s;
2896 if (s == NULL
2897 || ! bfd_set_section_alignment (abfd, s, 2))
2898 return FALSE;
2899 return TRUE;
2900}
2901
2902/* We have to create .dynsbss and .rela.sbss here so that they get mapped
2903 to output sections (just like _bfd_elf_create_dynamic_sections has
2904 to create .dynbss and .rela.bss). */
2905
2906static bfd_boolean
2907ppc_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
2908{
2909 struct ppc_elf_link_hash_table *htab;
2910 asection *s;
2911 flagword flags;
2912
2913 htab = ppc_elf_hash_table (info);
2914
2915 if (htab->got == NULL
2916 && !ppc_elf_create_got (abfd, info))
2917 return FALSE;
2918
2919 if (!_bfd_elf_create_dynamic_sections (abfd, info))
2920 return FALSE;
2921
2922 if (htab->glink == NULL
2923 && !ppc_elf_create_glink (abfd, info))
2924 return FALSE;
2925
2926 htab->dynbss = bfd_get_section_by_name (abfd, ".dynbss");
2927 s = bfd_make_section_anyway_with_flags (abfd, ".dynsbss",
2928 SEC_ALLOC | SEC_LINKER_CREATED);
2929 htab->dynsbss = s;
2930 if (s == NULL)
2931 return FALSE;
2932
2933 if (! info->shared)
2934 {
2935 htab->relbss = bfd_get_section_by_name (abfd, ".rela.bss");
2936 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
2937 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
2938 s = bfd_make_section_anyway_with_flags (abfd, ".rela.sbss", flags);
2939 htab->relsbss = s;
2940 if (s == NULL
2941 || ! bfd_set_section_alignment (abfd, s, 2))
2942 return FALSE;
2943 }
2944
2945 if (htab->is_vxworks
2946 && !elf_vxworks_create_dynamic_sections (abfd, info, &htab->srelplt2))
2947 return FALSE;
2948
2949 htab->relplt = bfd_get_section_by_name (abfd, ".rela.plt");
2950 htab->plt = s = bfd_get_section_by_name (abfd, ".plt");
2951 if (s == NULL)
2952 abort ();
2953
2954 flags = SEC_ALLOC | SEC_CODE | SEC_LINKER_CREATED;
2955 if (htab->plt_type == PLT_VXWORKS)
2956 /* The VxWorks PLT is a loaded section with contents. */
2957 flags |= SEC_HAS_CONTENTS | SEC_LOAD | SEC_READONLY;
2958 return bfd_set_section_flags (abfd, s, flags);
2959}
2960
2961/* Copy the extra info we tack onto an elf_link_hash_entry. */
2962
2963static void
2964ppc_elf_copy_indirect_symbol (struct bfd_link_info *info,
2965 struct elf_link_hash_entry *dir,
2966 struct elf_link_hash_entry *ind)
2967{
2968 struct ppc_elf_link_hash_entry *edir, *eind;
2969
2970 edir = (struct ppc_elf_link_hash_entry *) dir;
2971 eind = (struct ppc_elf_link_hash_entry *) ind;
2972
2973 edir->tls_mask |= eind->tls_mask;
2974 edir->has_sda_refs |= eind->has_sda_refs;
2975
2976 /* If called to transfer flags for a weakdef during processing
2977 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
2978 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
2979 if (!(ELIMINATE_COPY_RELOCS
2980 && eind->elf.root.type != bfd_link_hash_indirect
2981 && edir->elf.dynamic_adjusted))
2982 edir->elf.non_got_ref |= eind->elf.non_got_ref;
2983
2984 edir->elf.ref_dynamic |= eind->elf.ref_dynamic;
2985 edir->elf.ref_regular |= eind->elf.ref_regular;
2986 edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak;
2987 edir->elf.needs_plt |= eind->elf.needs_plt;
2988 edir->elf.pointer_equality_needed |= eind->elf.pointer_equality_needed;
2989
2990 if (eind->dyn_relocs != NULL)
2991 {
2992 if (edir->dyn_relocs != NULL)
2993 {
2994 struct elf_dyn_relocs **pp;
2995 struct elf_dyn_relocs *p;
2996
2997 /* Add reloc counts against the indirect sym to the direct sym
2998 list. Merge any entries against the same section. */
2999 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
3000 {
3001 struct elf_dyn_relocs *q;
3002
3003 for (q = edir->dyn_relocs; q != NULL; q = q->next)
3004 if (q->sec == p->sec)
3005 {
3006 q->pc_count += p->pc_count;
3007 q->count += p->count;
3008 *pp = p->next;
3009 break;
3010 }
3011 if (q == NULL)
3012 pp = &p->next;
3013 }
3014 *pp = edir->dyn_relocs;
3015 }
3016
3017 edir->dyn_relocs = eind->dyn_relocs;
3018 eind->dyn_relocs = NULL;
3019 }
3020
3021 /* If we were called to copy over info for a weak sym, that's all.
3022 You might think dyn_relocs need not be copied over; After all,
3023 both syms will be dynamic or both non-dynamic so we're just
3024 moving reloc accounting around. However, ELIMINATE_COPY_RELOCS
3025 code in ppc_elf_adjust_dynamic_symbol needs to check for
3026 dyn_relocs in read-only sections, and it does so on what is the
3027 DIR sym here. */
3028 if (eind->elf.root.type != bfd_link_hash_indirect)
3029 return;
3030
3031 /* Copy over the GOT refcount entries that we may have already seen to
3032 the symbol which just became indirect. */
3033 edir->elf.got.refcount += eind->elf.got.refcount;
3034 eind->elf.got.refcount = 0;
3035
3036 /* And plt entries. */
3037 if (eind->elf.plt.plist != NULL)
3038 {
3039 if (edir->elf.plt.plist != NULL)
3040 {
3041 struct plt_entry **entp;
3042 struct plt_entry *ent;
3043
3044 for (entp = &eind->elf.plt.plist; (ent = *entp) != NULL; )
3045 {
3046 struct plt_entry *dent;
3047
3048 for (dent = edir->elf.plt.plist; dent != NULL; dent = dent->next)
3049 if (dent->sec == ent->sec && dent->addend == ent->addend)
3050 {
3051 dent->plt.refcount += ent->plt.refcount;
3052 *entp = ent->next;
3053 break;
3054 }
3055 if (dent == NULL)
3056 entp = &ent->next;
3057 }
3058 *entp = edir->elf.plt.plist;
3059 }
3060
3061 edir->elf.plt.plist = eind->elf.plt.plist;
3062 eind->elf.plt.plist = NULL;
3063 }
3064
3065 if (eind->elf.dynindx != -1)
3066 {
3067 if (edir->elf.dynindx != -1)
3068 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
3069 edir->elf.dynstr_index);
3070 edir->elf.dynindx = eind->elf.dynindx;
3071 edir->elf.dynstr_index = eind->elf.dynstr_index;
3072 eind->elf.dynindx = -1;
3073 eind->elf.dynstr_index = 0;
3074 }
3075}
3076
3077/* Hook called by the linker routine which adds symbols from an object
3078 file. We use it to put .comm items in .sbss, and not .bss. */
3079
3080static bfd_boolean
3081ppc_elf_add_symbol_hook (bfd *abfd,
3082 struct bfd_link_info *info,
3083 Elf_Internal_Sym *sym,
3084 const char **namep ATTRIBUTE_UNUSED,
3085 flagword *flagsp ATTRIBUTE_UNUSED,
3086 asection **secp,
3087 bfd_vma *valp)
3088{
3089 if (sym->st_shndx == SHN_COMMON
3090 && !info->relocatable
3091 && is_ppc_elf (info->output_bfd)
3092 && sym->st_size <= elf_gp_size (abfd))
3093 {
3094 /* Common symbols less than or equal to -G nn bytes are automatically
3095 put into .sbss. */
3096 struct ppc_elf_link_hash_table *htab;
3097
3098 htab = ppc_elf_hash_table (info);
3099 if (htab->sbss == NULL)
3100 {
3101 flagword flags = SEC_IS_COMMON | SEC_LINKER_CREATED;
3102
3103 if (!htab->elf.dynobj)
3104 htab->elf.dynobj = abfd;
3105
3106 htab->sbss = bfd_make_section_anyway_with_flags (htab->elf.dynobj,
3107 ".sbss",
3108 flags);
3109 if (htab->sbss == NULL)
3110 return FALSE;
3111 }
3112
3113 *secp = htab->sbss;
3114 *valp = sym->st_size;
3115 }
3116
3117 if ((abfd->flags & DYNAMIC) == 0
3118 && (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC
3119 || ELF_ST_BIND (sym->st_info) == STB_GNU_UNIQUE))
3120 elf_tdata (info->output_bfd)->has_gnu_symbols = TRUE;
3121
3122 return TRUE;
3123}
3124\f
3125static bfd_boolean
3126create_sdata_sym (struct bfd_link_info *info, elf_linker_section_t *lsect)
3127{
3128 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
3129
3130 lsect->sym = elf_link_hash_lookup (&htab->elf, lsect->sym_name,
3131 TRUE, FALSE, TRUE);
3132 if (lsect->sym == NULL)
3133 return FALSE;
3134 if (lsect->sym->root.type == bfd_link_hash_new)
3135 lsect->sym->non_elf = 0;
3136 lsect->sym->ref_regular = 1;
3137 _bfd_elf_link_hash_hide_symbol (info, lsect->sym, TRUE);
3138 return TRUE;
3139}
3140
3141/* Create a special linker section. */
3142
3143static bfd_boolean
3144ppc_elf_create_linker_section (bfd *abfd,
3145 struct bfd_link_info *info,
3146 flagword flags,
3147 elf_linker_section_t *lsect)
3148{
3149 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
3150 asection *s;
3151
3152 flags |= (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
3153 | SEC_LINKER_CREATED);
3154
3155 /* Record the first bfd that needs the special sections. */
3156 if (!htab->elf.dynobj)
3157 htab->elf.dynobj = abfd;
3158
3159 s = bfd_make_section_anyway_with_flags (htab->elf.dynobj,
3160 lsect->name,
3161 flags);
3162 if (s == NULL
3163 || !bfd_set_section_alignment (htab->elf.dynobj, s, 2))
3164 return FALSE;
3165 lsect->section = s;
3166
3167 return create_sdata_sym (info, lsect);
3168}
3169
3170/* Find a linker generated pointer with a given addend and type. */
3171
3172static elf_linker_section_pointers_t *
3173elf_find_pointer_linker_section
3174 (elf_linker_section_pointers_t *linker_pointers,
3175 bfd_vma addend,
3176 elf_linker_section_t *lsect)
3177{
3178 for ( ; linker_pointers != NULL; linker_pointers = linker_pointers->next)
3179 if (lsect == linker_pointers->lsect && addend == linker_pointers->addend)
3180 return linker_pointers;
3181
3182 return NULL;
3183}
3184
3185/* Allocate a pointer to live in a linker created section. */
3186
3187static bfd_boolean
3188elf_create_pointer_linker_section (bfd *abfd,
3189 elf_linker_section_t *lsect,
3190 struct elf_link_hash_entry *h,
3191 const Elf_Internal_Rela *rel)
3192{
3193 elf_linker_section_pointers_t **ptr_linker_section_ptr = NULL;
3194 elf_linker_section_pointers_t *linker_section_ptr;
3195 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
3196 bfd_size_type amt;
3197
3198 BFD_ASSERT (lsect != NULL);
3199
3200 /* Is this a global symbol? */
3201 if (h != NULL)
3202 {
3203 struct ppc_elf_link_hash_entry *eh;
3204
3205 /* Has this symbol already been allocated? If so, our work is done. */
3206 eh = (struct ppc_elf_link_hash_entry *) h;
3207 if (elf_find_pointer_linker_section (eh->linker_section_pointer,
3208 rel->r_addend,
3209 lsect))
3210 return TRUE;
3211
3212 ptr_linker_section_ptr = &eh->linker_section_pointer;
3213 }
3214 else
3215 {
3216 BFD_ASSERT (is_ppc_elf (abfd));
3217
3218 /* Allocation of a pointer to a local symbol. */
3219 elf_linker_section_pointers_t **ptr = elf_local_ptr_offsets (abfd);
3220
3221 /* Allocate a table to hold the local symbols if first time. */
3222 if (!ptr)
3223 {
3224 unsigned int num_symbols = elf_symtab_hdr (abfd).sh_info;
3225
3226 amt = num_symbols;
3227 amt *= sizeof (elf_linker_section_pointers_t *);
3228 ptr = bfd_zalloc (abfd, amt);
3229
3230 if (!ptr)
3231 return FALSE;
3232
3233 elf_local_ptr_offsets (abfd) = ptr;
3234 }
3235
3236 /* Has this symbol already been allocated? If so, our work is done. */
3237 if (elf_find_pointer_linker_section (ptr[r_symndx],
3238 rel->r_addend,
3239 lsect))
3240 return TRUE;
3241
3242 ptr_linker_section_ptr = &ptr[r_symndx];
3243 }
3244
3245 /* Allocate space for a pointer in the linker section, and allocate
3246 a new pointer record from internal memory. */
3247 BFD_ASSERT (ptr_linker_section_ptr != NULL);
3248 amt = sizeof (elf_linker_section_pointers_t);
3249 linker_section_ptr = bfd_alloc (abfd, amt);
3250
3251 if (!linker_section_ptr)
3252 return FALSE;
3253
3254 linker_section_ptr->next = *ptr_linker_section_ptr;
3255 linker_section_ptr->addend = rel->r_addend;
3256 linker_section_ptr->lsect = lsect;
3257 *ptr_linker_section_ptr = linker_section_ptr;
3258
3259 linker_section_ptr->offset = lsect->section->size;
3260 lsect->section->size += 4;
3261
3262#ifdef DEBUG
3263 fprintf (stderr,
3264 "Create pointer in linker section %s, offset = %ld, section size = %ld\n",
3265 lsect->name, (long) linker_section_ptr->offset,
3266 (long) lsect->section->size);
3267#endif
3268
3269 return TRUE;
3270}
3271
3272static struct plt_entry **
3273update_local_sym_info (bfd *abfd,
3274 Elf_Internal_Shdr *symtab_hdr,
3275 unsigned long r_symndx,
3276 int tls_type)
3277{
3278 bfd_signed_vma *local_got_refcounts = elf_local_got_refcounts (abfd);
3279 struct plt_entry **local_plt;
3280 char *local_got_tls_masks;
3281
3282 if (local_got_refcounts == NULL)
3283 {
3284 bfd_size_type size = symtab_hdr->sh_info;
3285
3286 size *= (sizeof (*local_got_refcounts)
3287 + sizeof (*local_plt)
3288 + sizeof (*local_got_tls_masks));
3289 local_got_refcounts = bfd_zalloc (abfd, size);
3290 if (local_got_refcounts == NULL)
3291 return NULL;
3292 elf_local_got_refcounts (abfd) = local_got_refcounts;
3293 }
3294
3295 local_plt = (struct plt_entry **) (local_got_refcounts + symtab_hdr->sh_info);
3296 local_got_tls_masks = (char *) (local_plt + symtab_hdr->sh_info);
3297 local_got_tls_masks[r_symndx] |= tls_type;
3298 if (tls_type != PLT_IFUNC)
3299 local_got_refcounts[r_symndx] += 1;
3300 return local_plt + r_symndx;
3301}
3302
3303static bfd_boolean
3304update_plt_info (bfd *abfd, struct plt_entry **plist,
3305 asection *sec, bfd_vma addend)
3306{
3307 struct plt_entry *ent;
3308
3309 if (addend < 32768)
3310 sec = NULL;
3311 for (ent = *plist; ent != NULL; ent = ent->next)
3312 if (ent->sec == sec && ent->addend == addend)
3313 break;
3314 if (ent == NULL)
3315 {
3316 bfd_size_type amt = sizeof (*ent);
3317 ent = bfd_alloc (abfd, amt);
3318 if (ent == NULL)
3319 return FALSE;
3320 ent->next = *plist;
3321 ent->sec = sec;
3322 ent->addend = addend;
3323 ent->plt.refcount = 0;
3324 *plist = ent;
3325 }
3326 ent->plt.refcount += 1;
3327 return TRUE;
3328}
3329
3330static struct plt_entry *
3331find_plt_ent (struct plt_entry **plist, asection *sec, bfd_vma addend)
3332{
3333 struct plt_entry *ent;
3334
3335 if (addend < 32768)
3336 sec = NULL;
3337 for (ent = *plist; ent != NULL; ent = ent->next)
3338 if (ent->sec == sec && ent->addend == addend)
3339 break;
3340 return ent;
3341}
3342
3343static bfd_boolean
3344is_branch_reloc (enum elf_ppc_reloc_type r_type)
3345{
3346 return (r_type == R_PPC_PLTREL24
3347 || r_type == R_PPC_LOCAL24PC
3348 || r_type == R_PPC_REL24
3349 || r_type == R_PPC_REL14
3350 || r_type == R_PPC_REL14_BRTAKEN
3351 || r_type == R_PPC_REL14_BRNTAKEN
3352 || r_type == R_PPC_ADDR24
3353 || r_type == R_PPC_ADDR14
3354 || r_type == R_PPC_ADDR14_BRTAKEN
3355 || r_type == R_PPC_ADDR14_BRNTAKEN);
3356}
3357
3358static void
3359bad_shared_reloc (bfd *abfd, enum elf_ppc_reloc_type r_type)
3360{
3361 (*_bfd_error_handler)
3362 (_("%B: relocation %s cannot be used when making a shared object"),
3363 abfd,
3364 ppc_elf_howto_table[r_type]->name);
3365 bfd_set_error (bfd_error_bad_value);
3366}
3367
3368/* Look through the relocs for a section during the first phase, and
3369 allocate space in the global offset table or procedure linkage
3370 table. */
3371
3372static bfd_boolean
3373ppc_elf_check_relocs (bfd *abfd,
3374 struct bfd_link_info *info,
3375 asection *sec,
3376 const Elf_Internal_Rela *relocs)
3377{
3378 struct ppc_elf_link_hash_table *htab;
3379 Elf_Internal_Shdr *symtab_hdr;
3380 struct elf_link_hash_entry **sym_hashes;
3381 const Elf_Internal_Rela *rel;
3382 const Elf_Internal_Rela *rel_end;
3383 asection *got2, *sreloc;
3384 struct elf_link_hash_entry *tga;
3385
3386 if (info->relocatable)
3387 return TRUE;
3388
3389 /* Don't do anything special with non-loaded, non-alloced sections.
3390 In particular, any relocs in such sections should not affect GOT
3391 and PLT reference counting (ie. we don't allow them to create GOT
3392 or PLT entries), there's no possibility or desire to optimize TLS
3393 relocs, and there's not much point in propagating relocs to shared
3394 libs that the dynamic linker won't relocate. */
3395 if ((sec->flags & SEC_ALLOC) == 0)
3396 return TRUE;
3397
3398#ifdef DEBUG
3399 _bfd_error_handler ("ppc_elf_check_relocs called for section %A in %B",
3400 sec, abfd);
3401#endif
3402
3403 BFD_ASSERT (is_ppc_elf (abfd));
3404
3405 /* Initialize howto table if not already done. */
3406 if (!ppc_elf_howto_table[R_PPC_ADDR32])
3407 ppc_elf_howto_init ();
3408
3409 htab = ppc_elf_hash_table (info);
3410 if (htab->glink == NULL)
3411 {
3412 if (htab->elf.dynobj == NULL)
3413 htab->elf.dynobj = abfd;
3414 if (!ppc_elf_create_glink (htab->elf.dynobj, info))
3415 return FALSE;
3416 }
3417 tga = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
3418 FALSE, FALSE, TRUE);
3419 symtab_hdr = &elf_symtab_hdr (abfd);
3420 sym_hashes = elf_sym_hashes (abfd);
3421 got2 = bfd_get_section_by_name (abfd, ".got2");
3422 sreloc = NULL;
3423
3424 rel_end = relocs + sec->reloc_count;
3425 for (rel = relocs; rel < rel_end; rel++)
3426 {
3427 unsigned long r_symndx;
3428 enum elf_ppc_reloc_type r_type;
3429 struct elf_link_hash_entry *h;
3430 int tls_type;
3431
3432 r_symndx = ELF32_R_SYM (rel->r_info);
3433 if (r_symndx < symtab_hdr->sh_info)
3434 h = NULL;
3435 else
3436 {
3437 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3438 while (h->root.type == bfd_link_hash_indirect
3439 || h->root.type == bfd_link_hash_warning)
3440 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3441 }
3442
3443 /* If a relocation refers to _GLOBAL_OFFSET_TABLE_, create the .got.
3444 This shows up in particular in an R_PPC_ADDR32 in the eabi
3445 startup code. */
3446 if (h != NULL
3447 && htab->got == NULL
3448 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
3449 {
3450 if (htab->elf.dynobj == NULL)
3451 htab->elf.dynobj = abfd;
3452 if (!ppc_elf_create_got (htab->elf.dynobj, info))
3453 return FALSE;
3454 BFD_ASSERT (h == htab->elf.hgot);
3455 }
3456
3457 tls_type = 0;
3458 r_type = ELF32_R_TYPE (rel->r_info);
3459 if (h == NULL && !htab->is_vxworks)
3460 {
3461 Elf_Internal_Sym *isym = bfd_sym_from_r_symndx (&htab->sym_cache,
3462 abfd, r_symndx);
3463 if (isym == NULL)
3464 return FALSE;
3465
3466 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC
3467 && (!info->shared
3468 || is_branch_reloc (r_type)))
3469 {
3470 struct plt_entry **ifunc;
3471 bfd_vma addend;
3472
3473 ifunc = update_local_sym_info (abfd, symtab_hdr, r_symndx,
3474 PLT_IFUNC);
3475 if (ifunc == NULL)
3476 return FALSE;
3477
3478 /* STT_GNU_IFUNC symbols must have a PLT entry;
3479 In a non-pie executable even when there are
3480 no plt calls. */
3481 addend = 0;
3482 if (r_type == R_PPC_PLTREL24)
3483 {
3484 ppc_elf_tdata (abfd)->makes_plt_call = 1;
3485 if (info->shared)
3486 addend = rel->r_addend;
3487 }
3488 if (!update_plt_info (abfd, ifunc, got2, addend))
3489 return FALSE;
3490 }
3491 }
3492
3493 if (!htab->is_vxworks
3494 && is_branch_reloc (r_type)
3495 && h != NULL
3496 && h == tga)
3497 {
3498 if (rel != relocs
3499 && (ELF32_R_TYPE (rel[-1].r_info) == R_PPC_TLSGD
3500 || ELF32_R_TYPE (rel[-1].r_info) == R_PPC_TLSLD))
3501 /* We have a new-style __tls_get_addr call with a marker
3502 reloc. */
3503 ;
3504 else
3505 /* Mark this section as having an old-style call. */
3506 sec->has_tls_get_addr_call = 1;
3507 }
3508
3509 switch (r_type)
3510 {
3511 case R_PPC_TLSGD:
3512 case R_PPC_TLSLD:
3513 /* These special tls relocs tie a call to __tls_get_addr with
3514 its parameter symbol. */
3515 break;
3516
3517 case R_PPC_GOT_TLSLD16:
3518 case R_PPC_GOT_TLSLD16_LO:
3519 case R_PPC_GOT_TLSLD16_HI:
3520 case R_PPC_GOT_TLSLD16_HA:
3521 tls_type = TLS_TLS | TLS_LD;
3522 goto dogottls;
3523
3524 case R_PPC_GOT_TLSGD16:
3525 case R_PPC_GOT_TLSGD16_LO:
3526 case R_PPC_GOT_TLSGD16_HI:
3527 case R_PPC_GOT_TLSGD16_HA:
3528 tls_type = TLS_TLS | TLS_GD;
3529 goto dogottls;
3530
3531 case R_PPC_GOT_TPREL16:
3532 case R_PPC_GOT_TPREL16_LO:
3533 case R_PPC_GOT_TPREL16_HI:
3534 case R_PPC_GOT_TPREL16_HA:
3535 if (!info->executable)
3536 info->flags |= DF_STATIC_TLS;
3537 tls_type = TLS_TLS | TLS_TPREL;
3538 goto dogottls;
3539
3540 case R_PPC_GOT_DTPREL16:
3541 case R_PPC_GOT_DTPREL16_LO:
3542 case R_PPC_GOT_DTPREL16_HI:
3543 case R_PPC_GOT_DTPREL16_HA:
3544 tls_type = TLS_TLS | TLS_DTPREL;
3545 dogottls:
3546 sec->has_tls_reloc = 1;
3547 /* Fall thru */
3548
3549 /* GOT16 relocations */
3550 case R_PPC_GOT16:
3551 case R_PPC_GOT16_LO:
3552 case R_PPC_GOT16_HI:
3553 case R_PPC_GOT16_HA:
3554 /* This symbol requires a global offset table entry. */
3555 if (htab->got == NULL)
3556 {
3557 if (htab->elf.dynobj == NULL)
3558 htab->elf.dynobj = abfd;
3559 if (!ppc_elf_create_got (htab->elf.dynobj, info))
3560 return FALSE;
3561 }
3562 if (h != NULL)
3563 {
3564 h->got.refcount += 1;
3565 ppc_elf_hash_entry (h)->tls_mask |= tls_type;
3566 }
3567 else
3568 /* This is a global offset table entry for a local symbol. */
3569 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, tls_type))
3570 return FALSE;
3571
3572 /* We may also need a plt entry if the symbol turns out to be
3573 an ifunc. */
3574 if (h != NULL && !info->shared)
3575 {
3576 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
3577 return FALSE;
3578 }
3579 break;
3580
3581 /* Indirect .sdata relocation. */
3582 case R_PPC_EMB_SDAI16:
3583 if (info->shared)
3584 {
3585 bad_shared_reloc (abfd, r_type);
3586 return FALSE;
3587 }
3588 if (htab->sdata[0].section == NULL
3589 && !ppc_elf_create_linker_section (abfd, info, 0,
3590 &htab->sdata[0]))
3591 return FALSE;
3592 if (!elf_create_pointer_linker_section (abfd, &htab->sdata[0],
3593 h, rel))
3594 return FALSE;
3595 if (h != NULL)
3596 {
3597 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3598 h->non_got_ref = TRUE;
3599 }
3600 break;
3601
3602 /* Indirect .sdata2 relocation. */
3603 case R_PPC_EMB_SDA2I16:
3604 if (info->shared)
3605 {
3606 bad_shared_reloc (abfd, r_type);
3607 return FALSE;
3608 }
3609 if (htab->sdata[1].section == NULL
3610 && !ppc_elf_create_linker_section (abfd, info, SEC_READONLY,
3611 &htab->sdata[1]))
3612 return FALSE;
3613 if (!elf_create_pointer_linker_section (abfd, &htab->sdata[1],
3614 h, rel))
3615 return FALSE;
3616 if (h != NULL)
3617 {
3618 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3619 h->non_got_ref = TRUE;
3620 }
3621 break;
3622
3623 case R_PPC_SDAREL16:
3624 if (htab->sdata[0].sym == NULL
3625 && !create_sdata_sym (info, &htab->sdata[0]))
3626 return FALSE;
3627 if (h != NULL)
3628 {
3629 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3630 h->non_got_ref = TRUE;
3631 }
3632 break;
3633
3634 case R_PPC_EMB_SDA2REL:
3635 if (info->shared)
3636 {
3637 bad_shared_reloc (abfd, r_type);
3638 return FALSE;
3639 }
3640 if (htab->sdata[1].sym == NULL
3641 && !create_sdata_sym (info, &htab->sdata[1]))
3642 return FALSE;
3643 if (h != NULL)
3644 {
3645 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3646 h->non_got_ref = TRUE;
3647 }
3648 break;
3649
3650 case R_PPC_EMB_SDA21:
3651 case R_PPC_EMB_RELSDA:
3652 if (info->shared)
3653 {
3654 bad_shared_reloc (abfd, r_type);
3655 return FALSE;
3656 }
3657 if (htab->sdata[0].sym == NULL
3658 && !create_sdata_sym (info, &htab->sdata[0]))
3659 return FALSE;
3660 if (htab->sdata[1].sym == NULL
3661 && !create_sdata_sym (info, &htab->sdata[1]))
3662 return FALSE;
3663 if (h != NULL)
3664 {
3665 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3666 h->non_got_ref = TRUE;
3667 }
3668 break;
3669
3670 case R_PPC_EMB_NADDR32:
3671 case R_PPC_EMB_NADDR16:
3672 case R_PPC_EMB_NADDR16_LO:
3673 case R_PPC_EMB_NADDR16_HI:
3674 case R_PPC_EMB_NADDR16_HA:
3675 if (info->shared)
3676 {
3677 bad_shared_reloc (abfd, r_type);
3678 return FALSE;
3679 }
3680 if (h != NULL)
3681 h->non_got_ref = TRUE;
3682 break;
3683
3684 case R_PPC_PLTREL24:
3685 if (h == NULL)
3686 break;
3687 /* Fall through */
3688 case R_PPC_PLT32:
3689 case R_PPC_PLTREL32:
3690 case R_PPC_PLT16_LO:
3691 case R_PPC_PLT16_HI:
3692 case R_PPC_PLT16_HA:
3693#ifdef DEBUG
3694 fprintf (stderr, "Reloc requires a PLT entry\n");
3695#endif
3696 /* This symbol requires a procedure linkage table entry. We
3697 actually build the entry in finish_dynamic_symbol,
3698 because this might be a case of linking PIC code without
3699 linking in any dynamic objects, in which case we don't
3700 need to generate a procedure linkage table after all. */
3701
3702 if (h == NULL)
3703 {
3704 /* It does not make sense to have a procedure linkage
3705 table entry for a local symbol. */
3706 info->callbacks->einfo (_("%P: %H: %s reloc against local symbol\n"),
3707 abfd, sec, rel->r_offset,
3708 ppc_elf_howto_table[r_type]->name);
3709 bfd_set_error (bfd_error_bad_value);
3710 return FALSE;
3711 }
3712 else
3713 {
3714 bfd_vma addend = 0;
3715
3716 if (r_type == R_PPC_PLTREL24)
3717 {
3718 ppc_elf_tdata (abfd)->makes_plt_call = 1;
3719 if (info->shared)
3720 addend = rel->r_addend;
3721 }
3722 h->needs_plt = 1;
3723 if (!update_plt_info (abfd, &h->plt.plist, got2, addend))
3724 return FALSE;
3725 }
3726 break;
3727
3728 /* The following relocations don't need to propagate the
3729 relocation if linking a shared object since they are
3730 section relative. */
3731 case R_PPC_SECTOFF:
3732 case R_PPC_SECTOFF_LO:
3733 case R_PPC_SECTOFF_HI:
3734 case R_PPC_SECTOFF_HA:
3735 case R_PPC_DTPREL16:
3736 case R_PPC_DTPREL16_LO:
3737 case R_PPC_DTPREL16_HI:
3738 case R_PPC_DTPREL16_HA:
3739 case R_PPC_TOC16:
3740 break;
3741
3742 case R_PPC_REL16:
3743 case R_PPC_REL16_LO:
3744 case R_PPC_REL16_HI:
3745 case R_PPC_REL16_HA:
3746 ppc_elf_tdata (abfd)->has_rel16 = 1;
3747 break;
3748
3749 /* These are just markers. */
3750 case R_PPC_TLS:
3751 case R_PPC_EMB_MRKREF:
3752 case R_PPC_NONE:
3753 case R_PPC_max:
3754 case R_PPC_RELAX:
3755 case R_PPC_RELAX_PLT:
3756 case R_PPC_RELAX_PLTREL24:
3757 break;
3758
3759 /* These should only appear in dynamic objects. */
3760 case R_PPC_COPY:
3761 case R_PPC_GLOB_DAT:
3762 case R_PPC_JMP_SLOT:
3763 case R_PPC_RELATIVE:
3764 case R_PPC_IRELATIVE:
3765 break;
3766
3767 /* These aren't handled yet. We'll report an error later. */
3768 case R_PPC_ADDR30:
3769 case R_PPC_EMB_RELSEC16:
3770 case R_PPC_EMB_RELST_LO:
3771 case R_PPC_EMB_RELST_HI:
3772 case R_PPC_EMB_RELST_HA:
3773 case R_PPC_EMB_BIT_FLD:
3774 break;
3775
3776 /* This refers only to functions defined in the shared library. */
3777 case R_PPC_LOCAL24PC:
3778 if (h != NULL && h == htab->elf.hgot && htab->plt_type == PLT_UNSET)
3779 {
3780 htab->plt_type = PLT_OLD;
3781 htab->old_bfd = abfd;
3782 }
3783 break;
3784
3785 /* This relocation describes the C++ object vtable hierarchy.
3786 Reconstruct it for later use during GC. */
3787 case R_PPC_GNU_VTINHERIT:
3788 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
3789 return FALSE;
3790 break;
3791
3792 /* This relocation describes which C++ vtable entries are actually
3793 used. Record for later use during GC. */
3794 case R_PPC_GNU_VTENTRY:
3795 BFD_ASSERT (h != NULL);
3796 if (h != NULL
3797 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
3798 return FALSE;
3799 break;
3800
3801 /* We shouldn't really be seeing these. */
3802 case R_PPC_TPREL32:
3803 case R_PPC_TPREL16:
3804 case R_PPC_TPREL16_LO:
3805 case R_PPC_TPREL16_HI:
3806 case R_PPC_TPREL16_HA:
3807 if (!info->executable)
3808 info->flags |= DF_STATIC_TLS;
3809 goto dodyn;
3810
3811 /* Nor these. */
3812 case R_PPC_DTPMOD32:
3813 case R_PPC_DTPREL32:
3814 goto dodyn;
3815
3816 case R_PPC_REL32:
3817 if (h == NULL
3818 && got2 != NULL
3819 && (sec->flags & SEC_CODE) != 0
3820 && info->shared
3821 && htab->plt_type == PLT_UNSET)
3822 {
3823 /* Old -fPIC gcc code has .long LCTOC1-LCFx just before
3824 the start of a function, which assembles to a REL32
3825 reference to .got2. If we detect one of these, then
3826 force the old PLT layout because the linker cannot
3827 reliably deduce the GOT pointer value needed for
3828 PLT call stubs. */
3829 asection *s;
3830 Elf_Internal_Sym *isym;
3831
3832 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
3833 abfd, r_symndx);
3834 if (isym == NULL)
3835 return FALSE;
3836
3837 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
3838 if (s == got2)
3839 {
3840 htab->plt_type = PLT_OLD;
3841 htab->old_bfd = abfd;
3842 }
3843 }
3844 if (h == NULL || h == htab->elf.hgot)
3845 break;
3846 /* fall through */
3847
3848 case R_PPC_ADDR32:
3849 case R_PPC_ADDR16:
3850 case R_PPC_ADDR16_LO:
3851 case R_PPC_ADDR16_HI:
3852 case R_PPC_ADDR16_HA:
3853 case R_PPC_UADDR32:
3854 case R_PPC_UADDR16:
3855 if (h != NULL && !info->shared)
3856 {
3857 /* We may need a plt entry if the symbol turns out to be
3858 a function defined in a dynamic object. */
3859 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
3860 return FALSE;
3861
3862 /* We may need a copy reloc too. */
3863 h->non_got_ref = 1;
3864 h->pointer_equality_needed = 1;
3865 }
3866 goto dodyn;
3867
3868 case R_PPC_REL24:
3869 case R_PPC_REL14:
3870 case R_PPC_REL14_BRTAKEN:
3871 case R_PPC_REL14_BRNTAKEN:
3872 if (h == NULL)
3873 break;
3874 if (h == htab->elf.hgot)
3875 {
3876 if (htab->plt_type == PLT_UNSET)
3877 {
3878 htab->plt_type = PLT_OLD;
3879 htab->old_bfd = abfd;
3880 }
3881 break;
3882 }
3883 /* fall through */
3884
3885 case R_PPC_ADDR24:
3886 case R_PPC_ADDR14:
3887 case R_PPC_ADDR14_BRTAKEN:
3888 case R_PPC_ADDR14_BRNTAKEN:
3889 if (h != NULL && !info->shared)
3890 {
3891 /* We may need a plt entry if the symbol turns out to be
3892 a function defined in a dynamic object. */
3893 h->needs_plt = 1;
3894 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
3895 return FALSE;
3896 break;
3897 }
3898
3899 dodyn:
3900 /* If we are creating a shared library, and this is a reloc
3901 against a global symbol, or a non PC relative reloc
3902 against a local symbol, then we need to copy the reloc
3903 into the shared library. However, if we are linking with
3904 -Bsymbolic, we do not need to copy a reloc against a
3905 global symbol which is defined in an object we are
3906 including in the link (i.e., DEF_REGULAR is set). At
3907 this point we have not seen all the input files, so it is
3908 possible that DEF_REGULAR is not set now but will be set
3909 later (it is never cleared). In case of a weak definition,
3910 DEF_REGULAR may be cleared later by a strong definition in
3911 a shared library. We account for that possibility below by
3912 storing information in the dyn_relocs field of the hash
3913 table entry. A similar situation occurs when creating
3914 shared libraries and symbol visibility changes render the
3915 symbol local.
3916
3917 If on the other hand, we are creating an executable, we
3918 may need to keep relocations for symbols satisfied by a
3919 dynamic library if we manage to avoid copy relocs for the
3920 symbol. */
3921 if ((info->shared
3922 && (must_be_dyn_reloc (info, r_type)
3923 || (h != NULL
3924 && (! info->symbolic
3925 || h->root.type == bfd_link_hash_defweak
3926 || !h->def_regular))))
3927 || (ELIMINATE_COPY_RELOCS
3928 && !info->shared
3929 && h != NULL
3930 && (h->root.type == bfd_link_hash_defweak
3931 || !h->def_regular)))
3932 {
3933 struct elf_dyn_relocs *p;
3934 struct elf_dyn_relocs **rel_head;
3935
3936#ifdef DEBUG
3937 fprintf (stderr,
3938 "ppc_elf_check_relocs needs to "
3939 "create relocation for %s\n",
3940 (h && h->root.root.string
3941 ? h->root.root.string : "<unknown>"));
3942#endif
3943 if (sreloc == NULL)
3944 {
3945 if (htab->elf.dynobj == NULL)
3946 htab->elf.dynobj = abfd;
3947
3948 sreloc = _bfd_elf_make_dynamic_reloc_section
3949 (sec, htab->elf.dynobj, 2, abfd, /*rela?*/ TRUE);
3950
3951 if (sreloc == NULL)
3952 return FALSE;
3953 }
3954
3955 /* If this is a global symbol, we count the number of
3956 relocations we need for this symbol. */
3957 if (h != NULL)
3958 {
3959 rel_head = &ppc_elf_hash_entry (h)->dyn_relocs;
3960 }
3961 else
3962 {
3963 /* Track dynamic relocs needed for local syms too.
3964 We really need local syms available to do this
3965 easily. Oh well. */
3966 asection *s;
3967 void *vpp;
3968 Elf_Internal_Sym *isym;
3969
3970 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
3971 abfd, r_symndx);
3972 if (isym == NULL)
3973 return FALSE;
3974
3975 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
3976 if (s == NULL)
3977 s = sec;
3978
3979 vpp = &elf_section_data (s)->local_dynrel;
3980 rel_head = (struct elf_dyn_relocs **) vpp;
3981 }
3982
3983 p = *rel_head;
3984 if (p == NULL || p->sec != sec)
3985 {
3986 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
3987 if (p == NULL)
3988 return FALSE;
3989 p->next = *rel_head;
3990 *rel_head = p;
3991 p->sec = sec;
3992 p->count = 0;
3993 p->pc_count = 0;
3994 }
3995
3996 p->count += 1;
3997 if (!must_be_dyn_reloc (info, r_type))
3998 p->pc_count += 1;
3999 }
4000
4001 break;
4002 }
4003 }
4004
4005 return TRUE;
4006}
4007\f
4008
4009/* Merge object attributes from IBFD into OBFD. Raise an error if
4010 there are conflicting attributes. */
4011static bfd_boolean
4012ppc_elf_merge_obj_attributes (bfd *ibfd, bfd *obfd)
4013{
4014 obj_attribute *in_attr, *in_attrs;
4015 obj_attribute *out_attr, *out_attrs;
4016
4017 if (!elf_known_obj_attributes_proc (obfd)[0].i)
4018 {
4019 /* This is the first object. Copy the attributes. */
4020 _bfd_elf_copy_obj_attributes (ibfd, obfd);
4021
4022 /* Use the Tag_null value to indicate the attributes have been
4023 initialized. */
4024 elf_known_obj_attributes_proc (obfd)[0].i = 1;
4025
4026 return TRUE;
4027 }
4028
4029 in_attrs = elf_known_obj_attributes (ibfd)[OBJ_ATTR_GNU];
4030 out_attrs = elf_known_obj_attributes (obfd)[OBJ_ATTR_GNU];
4031
4032 /* Check for conflicting Tag_GNU_Power_ABI_FP attributes and merge
4033 non-conflicting ones. */
4034 in_attr = &in_attrs[Tag_GNU_Power_ABI_FP];
4035 out_attr = &out_attrs[Tag_GNU_Power_ABI_FP];
4036 if (in_attr->i != out_attr->i)
4037 {
4038 out_attr->type = 1;
4039 if (out_attr->i == 0)
4040 out_attr->i = in_attr->i;
4041 else if (in_attr->i == 0)
4042 ;
4043 else if (out_attr->i == 1 && in_attr->i == 2)
4044 _bfd_error_handler
4045 (_("Warning: %B uses hard float, %B uses soft float"), obfd, ibfd);
4046 else if (out_attr->i == 1 && in_attr->i == 3)
4047 _bfd_error_handler
4048 (_("Warning: %B uses double-precision hard float, %B uses single-precision hard float"),
4049 obfd, ibfd);
4050 else if (out_attr->i == 3 && in_attr->i == 1)
4051 _bfd_error_handler
4052 (_("Warning: %B uses double-precision hard float, %B uses single-precision hard float"),
4053 ibfd, obfd);
4054 else if (out_attr->i == 3 && in_attr->i == 2)
4055 _bfd_error_handler
4056 (_("Warning: %B uses soft float, %B uses single-precision hard float"),
4057 ibfd, obfd);
4058 else if (out_attr->i == 2 && (in_attr->i == 1 || in_attr->i == 3))
4059 _bfd_error_handler
4060 (_("Warning: %B uses hard float, %B uses soft float"), ibfd, obfd);
4061 else if (in_attr->i > 3)
4062 _bfd_error_handler
4063 (_("Warning: %B uses unknown floating point ABI %d"), ibfd,
4064 in_attr->i);
4065 else
4066 _bfd_error_handler
4067 (_("Warning: %B uses unknown floating point ABI %d"), obfd,
4068 out_attr->i);
4069 }
4070
4071 /* Check for conflicting Tag_GNU_Power_ABI_Vector attributes and
4072 merge non-conflicting ones. */
4073 in_attr = &in_attrs[Tag_GNU_Power_ABI_Vector];
4074 out_attr = &out_attrs[Tag_GNU_Power_ABI_Vector];
4075 if (in_attr->i != out_attr->i)
4076 {
4077 const char *in_abi = NULL, *out_abi = NULL;
4078
4079 switch (in_attr->i)
4080 {
4081 case 1: in_abi = "generic"; break;
4082 case 2: in_abi = "AltiVec"; break;
4083 case 3: in_abi = "SPE"; break;
4084 }
4085
4086 switch (out_attr->i)
4087 {
4088 case 1: out_abi = "generic"; break;
4089 case 2: out_abi = "AltiVec"; break;
4090 case 3: out_abi = "SPE"; break;
4091 }
4092
4093 out_attr->type = 1;
4094 if (out_attr->i == 0)
4095 out_attr->i = in_attr->i;
4096 else if (in_attr->i == 0)
4097 ;
4098 /* For now, allow generic to transition to AltiVec or SPE
4099 without a warning. If GCC marked files with their stack
4100 alignment and used don't-care markings for files which are
4101 not affected by the vector ABI, we could warn about this
4102 case too. */
4103 else if (out_attr->i == 1)
4104 out_attr->i = in_attr->i;
4105 else if (in_attr->i == 1)
4106 ;
4107 else if (in_abi == NULL)
4108 _bfd_error_handler
4109 (_("Warning: %B uses unknown vector ABI %d"), ibfd,
4110 in_attr->i);
4111 else if (out_abi == NULL)
4112 _bfd_error_handler
4113 (_("Warning: %B uses unknown vector ABI %d"), obfd,
4114 in_attr->i);
4115 else
4116 _bfd_error_handler
4117 (_("Warning: %B uses vector ABI \"%s\", %B uses \"%s\""),
4118 ibfd, obfd, in_abi, out_abi);
4119 }
4120
4121 /* Check for conflicting Tag_GNU_Power_ABI_Struct_Return attributes
4122 and merge non-conflicting ones. */
4123 in_attr = &in_attrs[Tag_GNU_Power_ABI_Struct_Return];
4124 out_attr = &out_attrs[Tag_GNU_Power_ABI_Struct_Return];
4125 if (in_attr->i != out_attr->i)
4126 {
4127 out_attr->type = 1;
4128 if (out_attr->i == 0)
4129 out_attr->i = in_attr->i;
4130 else if (in_attr->i == 0)
4131 ;
4132 else if (out_attr->i == 1 && in_attr->i == 2)
4133 _bfd_error_handler
4134 (_("Warning: %B uses r3/r4 for small structure returns, %B uses memory"), obfd, ibfd);
4135 else if (out_attr->i == 2 && in_attr->i == 1)
4136 _bfd_error_handler
4137 (_("Warning: %B uses r3/r4 for small structure returns, %B uses memory"), ibfd, obfd);
4138 else if (in_attr->i > 2)
4139 _bfd_error_handler
4140 (_("Warning: %B uses unknown small structure return convention %d"), ibfd,
4141 in_attr->i);
4142 else
4143 _bfd_error_handler
4144 (_("Warning: %B uses unknown small structure return convention %d"), obfd,
4145 out_attr->i);
4146 }
4147
4148 /* Merge Tag_compatibility attributes and any common GNU ones. */
4149 _bfd_elf_merge_object_attributes (ibfd, obfd);
4150
4151 return TRUE;
4152}
4153
4154/* Merge backend specific data from an object file to the output
4155 object file when linking. */
4156
4157static bfd_boolean
4158ppc_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
4159{
4160 flagword old_flags;
4161 flagword new_flags;
4162 bfd_boolean error;
4163
4164 if (!is_ppc_elf (ibfd) || !is_ppc_elf (obfd))
4165 return TRUE;
4166
4167 /* Check if we have the same endianness. */
4168 if (! _bfd_generic_verify_endian_match (ibfd, obfd))
4169 return FALSE;
4170
4171 if (!ppc_elf_merge_obj_attributes (ibfd, obfd))
4172 return FALSE;
4173
4174 new_flags = elf_elfheader (ibfd)->e_flags;
4175 old_flags = elf_elfheader (obfd)->e_flags;
4176 if (!elf_flags_init (obfd))
4177 {
4178 /* First call, no flags set. */
4179 elf_flags_init (obfd) = TRUE;
4180 elf_elfheader (obfd)->e_flags = new_flags;
4181 }
4182
4183 /* Compatible flags are ok. */
4184 else if (new_flags == old_flags)
4185 ;
4186
4187 /* Incompatible flags. */
4188 else
4189 {
4190 /* Warn about -mrelocatable mismatch. Allow -mrelocatable-lib
4191 to be linked with either. */
4192 error = FALSE;
4193 if ((new_flags & EF_PPC_RELOCATABLE) != 0
4194 && (old_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0)
4195 {
4196 error = TRUE;
4197 (*_bfd_error_handler)
4198 (_("%B: compiled with -mrelocatable and linked with "
4199 "modules compiled normally"), ibfd);
4200 }
4201 else if ((new_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0
4202 && (old_flags & EF_PPC_RELOCATABLE) != 0)
4203 {
4204 error = TRUE;
4205 (*_bfd_error_handler)
4206 (_("%B: compiled normally and linked with "
4207 "modules compiled with -mrelocatable"), ibfd);
4208 }
4209
4210 /* The output is -mrelocatable-lib iff both the input files are. */
4211 if (! (new_flags & EF_PPC_RELOCATABLE_LIB))
4212 elf_elfheader (obfd)->e_flags &= ~EF_PPC_RELOCATABLE_LIB;
4213
4214 /* The output is -mrelocatable iff it can't be -mrelocatable-lib,
4215 but each input file is either -mrelocatable or -mrelocatable-lib. */
4216 if (! (elf_elfheader (obfd)->e_flags & EF_PPC_RELOCATABLE_LIB)
4217 && (new_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE))
4218 && (old_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE)))
4219 elf_elfheader (obfd)->e_flags |= EF_PPC_RELOCATABLE;
4220
4221 /* Do not warn about eabi vs. V.4 mismatch, just or in the bit if
4222 any module uses it. */
4223 elf_elfheader (obfd)->e_flags |= (new_flags & EF_PPC_EMB);
4224
4225 new_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
4226 old_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
4227
4228 /* Warn about any other mismatches. */
4229 if (new_flags != old_flags)
4230 {
4231 error = TRUE;
4232 (*_bfd_error_handler)
4233 (_("%B: uses different e_flags (0x%lx) fields "
4234 "than previous modules (0x%lx)"),
4235 ibfd, (long) new_flags, (long) old_flags);
4236 }
4237
4238 if (error)
4239 {
4240 bfd_set_error (bfd_error_bad_value);
4241 return FALSE;
4242 }
4243 }
4244
4245 return TRUE;
4246}
4247\f
4248/* Choose which PLT scheme to use, and set .plt flags appropriately.
4249 Returns -1 on error, 0 for old PLT, 1 for new PLT. */
4250int
4251ppc_elf_select_plt_layout (bfd *output_bfd ATTRIBUTE_UNUSED,
4252 struct bfd_link_info *info,
4253 enum ppc_elf_plt_type plt_style,
4254 int emit_stub_syms)
4255{
4256 struct ppc_elf_link_hash_table *htab;
4257 flagword flags;
4258
4259 htab = ppc_elf_hash_table (info);
4260
4261 htab->emit_stub_syms = emit_stub_syms;
4262
4263 if (htab->plt_type == PLT_UNSET)
4264 {
4265 struct elf_link_hash_entry *h;
4266
4267 if (plt_style == PLT_OLD)
4268 htab->plt_type = PLT_OLD;
4269 else if (info->shared
4270 && htab->elf.dynamic_sections_created
4271 && (h = elf_link_hash_lookup (&htab->elf, "_mcount",
4272 FALSE, FALSE, TRUE)) != NULL
4273 && (h->type == STT_FUNC
4274 || h->needs_plt)
4275 && h->ref_regular
4276 && !(SYMBOL_CALLS_LOCAL (info, h)
4277 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
4278 && h->root.type == bfd_link_hash_undefweak)))
4279 {
4280 /* Profiling of shared libs (and pies) is not supported with
4281 secure plt, because ppc32 does profiling before a
4282 function prologue and a secure plt pic call stubs needs
4283 r30 to be set up. */
4284 htab->plt_type = PLT_OLD;
4285 }
4286 else
4287 {
4288 bfd *ibfd;
4289 enum ppc_elf_plt_type plt_type = plt_style;
4290
4291 /* Look through the reloc flags left by ppc_elf_check_relocs.
4292 Use the old style bss plt if a file makes plt calls
4293 without using the new relocs, and if ld isn't given
4294 --secure-plt and we never see REL16 relocs. */
4295 if (plt_type == PLT_UNSET)
4296 plt_type = PLT_OLD;
4297 for (ibfd = info->input_bfds; ibfd; ibfd = ibfd->link_next)
4298 if (is_ppc_elf (ibfd))
4299 {
4300 if (ppc_elf_tdata (ibfd)->has_rel16)
4301 plt_type = PLT_NEW;
4302 else if (ppc_elf_tdata (ibfd)->makes_plt_call)
4303 {
4304 plt_type = PLT_OLD;
4305 htab->old_bfd = ibfd;
4306 break;
4307 }
4308 }
4309 htab->plt_type = plt_type;
4310 }
4311 }
4312 if (htab->plt_type == PLT_OLD && plt_style == PLT_NEW)
4313 {
4314 if (htab->old_bfd != NULL)
4315 info->callbacks->einfo (_("%P: bss-plt forced due to %B\n"),
4316 htab->old_bfd);
4317 else
4318 info->callbacks->einfo (_("%P: bss-plt forced by profiling\n"));
4319 }
4320
4321 BFD_ASSERT (htab->plt_type != PLT_VXWORKS);
4322
4323 if (htab->plt_type == PLT_NEW)
4324 {
4325 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
4326 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4327
4328 /* The new PLT is a loaded section. */
4329 if (htab->plt != NULL
4330 && !bfd_set_section_flags (htab->elf.dynobj, htab->plt, flags))
4331 return -1;
4332
4333 /* The new GOT is not executable. */
4334 if (htab->got != NULL
4335 && !bfd_set_section_flags (htab->elf.dynobj, htab->got, flags))
4336 return -1;
4337 }
4338 else
4339 {
4340 /* Stop an unused .glink section from affecting .text alignment. */
4341 if (htab->glink != NULL
4342 && !bfd_set_section_alignment (htab->elf.dynobj, htab->glink, 0))
4343 return -1;
4344 }
4345 return htab->plt_type == PLT_NEW;
4346}
4347\f
4348/* Return the section that should be marked against GC for a given
4349 relocation. */
4350
4351static asection *
4352ppc_elf_gc_mark_hook (asection *sec,
4353 struct bfd_link_info *info,
4354 Elf_Internal_Rela *rel,
4355 struct elf_link_hash_entry *h,
4356 Elf_Internal_Sym *sym)
4357{
4358 if (h != NULL)
4359 switch (ELF32_R_TYPE (rel->r_info))
4360 {
4361 case R_PPC_GNU_VTINHERIT:
4362 case R_PPC_GNU_VTENTRY:
4363 return NULL;
4364 }
4365
4366 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
4367}
4368
4369/* Update the got, plt and dynamic reloc reference counts for the
4370 section being removed. */
4371
4372static bfd_boolean
4373ppc_elf_gc_sweep_hook (bfd *abfd,
4374 struct bfd_link_info *info,
4375 asection *sec,
4376 const Elf_Internal_Rela *relocs)
4377{
4378 struct ppc_elf_link_hash_table *htab;
4379 Elf_Internal_Shdr *symtab_hdr;
4380 struct elf_link_hash_entry **sym_hashes;
4381 bfd_signed_vma *local_got_refcounts;
4382 const Elf_Internal_Rela *rel, *relend;
4383 asection *got2;
4384
4385 if (info->relocatable)
4386 return TRUE;
4387
4388 if ((sec->flags & SEC_ALLOC) == 0)
4389 return TRUE;
4390
4391 elf_section_data (sec)->local_dynrel = NULL;
4392
4393 htab = ppc_elf_hash_table (info);
4394 symtab_hdr = &elf_symtab_hdr (abfd);
4395 sym_hashes = elf_sym_hashes (abfd);
4396 local_got_refcounts = elf_local_got_refcounts (abfd);
4397 got2 = bfd_get_section_by_name (abfd, ".got2");
4398
4399 relend = relocs + sec->reloc_count;
4400 for (rel = relocs; rel < relend; rel++)
4401 {
4402 unsigned long r_symndx;
4403 enum elf_ppc_reloc_type r_type;
4404 struct elf_link_hash_entry *h = NULL;
4405
4406 r_symndx = ELF32_R_SYM (rel->r_info);
4407 if (r_symndx >= symtab_hdr->sh_info)
4408 {
4409 struct elf_dyn_relocs **pp, *p;
4410 struct ppc_elf_link_hash_entry *eh;
4411
4412 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4413 while (h->root.type == bfd_link_hash_indirect
4414 || h->root.type == bfd_link_hash_warning)
4415 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4416 eh = (struct ppc_elf_link_hash_entry *) h;
4417
4418 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
4419 if (p->sec == sec)
4420 {
4421 /* Everything must go for SEC. */
4422 *pp = p->next;
4423 break;
4424 }
4425 }
4426
4427 r_type = ELF32_R_TYPE (rel->r_info);
4428 if (!htab->is_vxworks
4429 && h == NULL
4430 && local_got_refcounts != NULL
4431 && (!info->shared
4432 || is_branch_reloc (r_type)))
4433 {
4434 struct plt_entry **local_plt = (struct plt_entry **)
4435 (local_got_refcounts + symtab_hdr->sh_info);
4436 char *local_got_tls_masks = (char *)
4437 (local_plt + symtab_hdr->sh_info);
4438 if ((local_got_tls_masks[r_symndx] & PLT_IFUNC) != 0)
4439 {
4440 struct plt_entry **ifunc = local_plt + r_symndx;
4441 bfd_vma addend = 0;
4442 struct plt_entry *ent;
4443
4444 if (r_type == R_PPC_PLTREL24 && info->shared)
4445 addend = rel->r_addend;
4446 ent = find_plt_ent (ifunc, got2, addend);
4447 if (ent->plt.refcount > 0)
4448 ent->plt.refcount -= 1;
4449 continue;
4450 }
4451 }
4452
4453 switch (r_type)
4454 {
4455 case R_PPC_GOT_TLSLD16:
4456 case R_PPC_GOT_TLSLD16_LO:
4457 case R_PPC_GOT_TLSLD16_HI:
4458 case R_PPC_GOT_TLSLD16_HA:
4459 case R_PPC_GOT_TLSGD16:
4460 case R_PPC_GOT_TLSGD16_LO:
4461 case R_PPC_GOT_TLSGD16_HI:
4462 case R_PPC_GOT_TLSGD16_HA:
4463 case R_PPC_GOT_TPREL16:
4464 case R_PPC_GOT_TPREL16_LO:
4465 case R_PPC_GOT_TPREL16_HI:
4466 case R_PPC_GOT_TPREL16_HA:
4467 case R_PPC_GOT_DTPREL16:
4468 case R_PPC_GOT_DTPREL16_LO:
4469 case R_PPC_GOT_DTPREL16_HI:
4470 case R_PPC_GOT_DTPREL16_HA:
4471 case R_PPC_GOT16:
4472 case R_PPC_GOT16_LO:
4473 case R_PPC_GOT16_HI:
4474 case R_PPC_GOT16_HA:
4475 if (h != NULL)
4476 {
4477 if (h->got.refcount > 0)
4478 h->got.refcount--;
4479 if (!info->shared)
4480 {
4481 struct plt_entry *ent;
4482
4483 ent = find_plt_ent (&h->plt.plist, NULL, 0);
4484 if (ent != NULL && ent->plt.refcount > 0)
4485 ent->plt.refcount -= 1;
4486 }
4487 }
4488 else if (local_got_refcounts != NULL)
4489 {
4490 if (local_got_refcounts[r_symndx] > 0)
4491 local_got_refcounts[r_symndx]--;
4492 }
4493 break;
4494
4495 case R_PPC_REL24:
4496 case R_PPC_REL14:
4497 case R_PPC_REL14_BRTAKEN:
4498 case R_PPC_REL14_BRNTAKEN:
4499 case R_PPC_REL32:
4500 if (h == NULL || h == htab->elf.hgot)
4501 break;
4502 /* Fall thru */
4503
4504 case R_PPC_ADDR32:
4505 case R_PPC_ADDR24:
4506 case R_PPC_ADDR16:
4507 case R_PPC_ADDR16_LO:
4508 case R_PPC_ADDR16_HI:
4509 case R_PPC_ADDR16_HA:
4510 case R_PPC_ADDR14:
4511 case R_PPC_ADDR14_BRTAKEN:
4512 case R_PPC_ADDR14_BRNTAKEN:
4513 case R_PPC_UADDR32:
4514 case R_PPC_UADDR16:
4515 if (info->shared)
4516 break;
4517
4518 case R_PPC_PLT32:
4519 case R_PPC_PLTREL24:
4520 case R_PPC_PLTREL32:
4521 case R_PPC_PLT16_LO:
4522 case R_PPC_PLT16_HI:
4523 case R_PPC_PLT16_HA:
4524 if (h != NULL)
4525 {
4526 bfd_vma addend = 0;
4527 struct plt_entry *ent;
4528
4529 if (r_type == R_PPC_PLTREL24 && info->shared)
4530 addend = rel->r_addend;
4531 ent = find_plt_ent (&h->plt.plist, got2, addend);
4532 if (ent != NULL && ent->plt.refcount > 0)
4533 ent->plt.refcount -= 1;
4534 }
4535 break;
4536
4537 default:
4538 break;
4539 }
4540 }
4541 return TRUE;
4542}
4543\f
4544/* Set plt output section type, htab->tls_get_addr, and call the
4545 generic ELF tls_setup function. */
4546
4547asection *
4548ppc_elf_tls_setup (bfd *obfd,
4549 struct bfd_link_info *info,
4550 int no_tls_get_addr_opt)
4551{
4552 struct ppc_elf_link_hash_table *htab;
4553
4554 htab = ppc_elf_hash_table (info);
4555 htab->tls_get_addr = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
4556 FALSE, FALSE, TRUE);
4557 if (!no_tls_get_addr_opt)
4558 {
4559 struct elf_link_hash_entry *opt, *tga;
4560 opt = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_opt",
4561 FALSE, FALSE, TRUE);
4562 if (opt != NULL
4563 && (opt->root.type == bfd_link_hash_defined
4564 || opt->root.type == bfd_link_hash_defweak))
4565 {
4566 /* If glibc supports an optimized __tls_get_addr call stub,
4567 signalled by the presence of __tls_get_addr_opt, and we'll
4568 be calling __tls_get_addr via a plt call stub, then
4569 make __tls_get_addr point to __tls_get_addr_opt. */
4570 tga = htab->tls_get_addr;
4571 if (htab->elf.dynamic_sections_created
4572 && tga != NULL
4573 && (tga->type == STT_FUNC
4574 || tga->needs_plt)
4575 && !(SYMBOL_CALLS_LOCAL (info, tga)
4576 || (ELF_ST_VISIBILITY (tga->other) != STV_DEFAULT
4577 && tga->root.type == bfd_link_hash_undefweak)))
4578 {
4579 struct plt_entry *ent;
4580 for (ent = tga->plt.plist; ent != NULL; ent = ent->next)
4581 if (ent->plt.refcount > 0)
4582 break;
4583 if (ent != NULL)
4584 {
4585 tga->root.type = bfd_link_hash_indirect;
4586 tga->root.u.i.link = &opt->root;
4587 ppc_elf_copy_indirect_symbol (info, opt, tga);
4588 if (opt->dynindx != -1)
4589 {
4590 /* Use __tls_get_addr_opt in dynamic relocations. */
4591 opt->dynindx = -1;
4592 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
4593 opt->dynstr_index);
4594 if (!bfd_elf_link_record_dynamic_symbol (info, opt))
4595 return FALSE;
4596 }
4597 htab->tls_get_addr = opt;
4598 }
4599 }
4600 }
4601 else
4602 no_tls_get_addr_opt = TRUE;
4603 }
4604 htab->no_tls_get_addr_opt = no_tls_get_addr_opt;
4605 if (htab->plt_type == PLT_NEW
4606 && htab->plt != NULL
4607 && htab->plt->output_section != NULL)
4608 {
4609 elf_section_type (htab->plt->output_section) = SHT_PROGBITS;
4610 elf_section_flags (htab->plt->output_section) = SHF_ALLOC + SHF_WRITE;
4611 }
4612
4613 return _bfd_elf_tls_setup (obfd, info);
4614}
4615
4616/* Return TRUE iff REL is a branch reloc with a global symbol matching
4617 HASH. */
4618
4619static bfd_boolean
4620branch_reloc_hash_match (const bfd *ibfd,
4621 const Elf_Internal_Rela *rel,
4622 const struct elf_link_hash_entry *hash)
4623{
4624 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
4625 enum elf_ppc_reloc_type r_type = ELF32_R_TYPE (rel->r_info);
4626 unsigned int r_symndx = ELF32_R_SYM (rel->r_info);
4627
4628 if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type))
4629 {
4630 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
4631 struct elf_link_hash_entry *h;
4632
4633 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4634 while (h->root.type == bfd_link_hash_indirect
4635 || h->root.type == bfd_link_hash_warning)
4636 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4637 if (h == hash)
4638 return TRUE;
4639 }
4640 return FALSE;
4641}
4642
4643/* Run through all the TLS relocs looking for optimization
4644 opportunities. */
4645
4646bfd_boolean
4647ppc_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED,
4648 struct bfd_link_info *info)
4649{
4650 bfd *ibfd;
4651 asection *sec;
4652 struct ppc_elf_link_hash_table *htab;
4653 int pass;
4654
4655 if (info->relocatable || !info->executable)
4656 return TRUE;
4657
4658 htab = ppc_elf_hash_table (info);
4659 if (htab == NULL)
4660 return FALSE;
4661
4662 /* Make two passes through the relocs. First time check that tls
4663 relocs involved in setting up a tls_get_addr call are indeed
4664 followed by such a call. If they are not, don't do any tls
4665 optimization. On the second pass twiddle tls_mask flags to
4666 notify relocate_section that optimization can be done, and
4667 adjust got and plt refcounts. */
4668 for (pass = 0; pass < 2; ++pass)
4669 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
4670 {
4671 Elf_Internal_Sym *locsyms = NULL;
4672 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
4673 asection *got2 = bfd_get_section_by_name (ibfd, ".got2");
4674
4675 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
4676 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
4677 {
4678 Elf_Internal_Rela *relstart, *rel, *relend;
4679 int expecting_tls_get_addr = 0;
4680
4681 /* Read the relocations. */
4682 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
4683 info->keep_memory);
4684 if (relstart == NULL)
4685 return FALSE;
4686
4687 relend = relstart + sec->reloc_count;
4688 for (rel = relstart; rel < relend; rel++)
4689 {
4690 enum elf_ppc_reloc_type r_type;
4691 unsigned long r_symndx;
4692 struct elf_link_hash_entry *h = NULL;
4693 char *tls_mask;
4694 char tls_set, tls_clear;
4695 bfd_boolean is_local;
4696 bfd_signed_vma *got_count;
4697
4698 r_symndx = ELF32_R_SYM (rel->r_info);
4699 if (r_symndx >= symtab_hdr->sh_info)
4700 {
4701 struct elf_link_hash_entry **sym_hashes;
4702
4703 sym_hashes = elf_sym_hashes (ibfd);
4704 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4705 while (h->root.type == bfd_link_hash_indirect
4706 || h->root.type == bfd_link_hash_warning)
4707 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4708 }
4709
4710 is_local = FALSE;
4711 if (h == NULL
4712 || !h->def_dynamic)
4713 is_local = TRUE;
4714
4715 r_type = ELF32_R_TYPE (rel->r_info);
4716 /* If this section has old-style __tls_get_addr calls
4717 without marker relocs, then check that each
4718 __tls_get_addr call reloc is preceded by a reloc
4719 that conceivably belongs to the __tls_get_addr arg
4720 setup insn. If we don't find matching arg setup
4721 relocs, don't do any tls optimization. */
4722 if (pass == 0
4723 && sec->has_tls_get_addr_call
4724 && h != NULL
4725 && h == htab->tls_get_addr
4726 && !expecting_tls_get_addr
4727 && is_branch_reloc (r_type))
4728 {
4729 info->callbacks->minfo ("%H __tls_get_addr lost arg, "
4730 "TLS optimization disabled\n",
4731 ibfd, sec, rel->r_offset);
4732 if (elf_section_data (sec)->relocs != relstart)
4733 free (relstart);
4734 return TRUE;
4735 }
4736
4737 expecting_tls_get_addr = 0;
4738 switch (r_type)
4739 {
4740 case R_PPC_GOT_TLSLD16:
4741 case R_PPC_GOT_TLSLD16_LO:
4742 expecting_tls_get_addr = 1;
4743 /* Fall thru */
4744
4745 case R_PPC_GOT_TLSLD16_HI:
4746 case R_PPC_GOT_TLSLD16_HA:
4747 /* These relocs should never be against a symbol
4748 defined in a shared lib. Leave them alone if
4749 that turns out to be the case. */
4750 if (!is_local)
4751 continue;
4752
4753 /* LD -> LE */
4754 tls_set = 0;
4755 tls_clear = TLS_LD;
4756 break;
4757
4758 case R_PPC_GOT_TLSGD16:
4759 case R_PPC_GOT_TLSGD16_LO:
4760 expecting_tls_get_addr = 1;
4761 /* Fall thru */
4762
4763 case R_PPC_GOT_TLSGD16_HI:
4764 case R_PPC_GOT_TLSGD16_HA:
4765 if (is_local)
4766 /* GD -> LE */
4767 tls_set = 0;
4768 else
4769 /* GD -> IE */
4770 tls_set = TLS_TLS | TLS_TPRELGD;
4771 tls_clear = TLS_GD;
4772 break;
4773
4774 case R_PPC_GOT_TPREL16:
4775 case R_PPC_GOT_TPREL16_LO:
4776 case R_PPC_GOT_TPREL16_HI:
4777 case R_PPC_GOT_TPREL16_HA:
4778 if (is_local)
4779 {
4780 /* IE -> LE */
4781 tls_set = 0;
4782 tls_clear = TLS_TPREL;
4783 break;
4784 }
4785 else
4786 continue;
4787
4788 case R_PPC_TLSGD:
4789 case R_PPC_TLSLD:
4790 expecting_tls_get_addr = 2;
4791 tls_set = 0;
4792 tls_clear = 0;
4793 break;
4794
4795 default:
4796 continue;
4797 }
4798
4799 if (pass == 0)
4800 {
4801 if (!expecting_tls_get_addr
4802 || (expecting_tls_get_addr == 1
4803 && !sec->has_tls_get_addr_call))
4804 continue;
4805
4806 if (rel + 1 < relend
4807 && branch_reloc_hash_match (ibfd, rel + 1,
4808 htab->tls_get_addr))
4809 continue;
4810
4811 /* Uh oh, we didn't find the expected call. We
4812 could just mark this symbol to exclude it
4813 from tls optimization but it's safer to skip
4814 the entire optimization. */
4815 info->callbacks->minfo (_("%H arg lost __tls_get_addr, "
4816 "TLS optimization disabled\n"),
4817 ibfd, sec, rel->r_offset);
4818 if (elf_section_data (sec)->relocs != relstart)
4819 free (relstart);
4820 return TRUE;
4821 }
4822
4823 if (expecting_tls_get_addr)
4824 {
4825 struct plt_entry *ent;
4826 bfd_vma addend = 0;
4827
4828 if (info->shared
4829 && ELF32_R_TYPE (rel[1].r_info) == R_PPC_PLTREL24)
4830 addend = rel[1].r_addend;
4831 ent = find_plt_ent (&htab->tls_get_addr->plt.plist,
4832 got2, addend);
4833 if (ent != NULL && ent->plt.refcount > 0)
4834 ent->plt.refcount -= 1;
4835
4836 if (expecting_tls_get_addr == 2)
4837 continue;
4838 }
4839
4840 if (h != NULL)
4841 {
4842 tls_mask = &ppc_elf_hash_entry (h)->tls_mask;
4843 got_count = &h->got.refcount;
4844 }
4845 else
4846 {
4847 bfd_signed_vma *lgot_refs;
4848 struct plt_entry **local_plt;
4849 char *lgot_masks;
4850
4851 if (locsyms == NULL)
4852 {
4853 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
4854 if (locsyms == NULL)
4855 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
4856 symtab_hdr->sh_info,
4857 0, NULL, NULL, NULL);
4858 if (locsyms == NULL)
4859 {
4860 if (elf_section_data (sec)->relocs != relstart)
4861 free (relstart);
4862 return FALSE;
4863 }
4864 }
4865 lgot_refs = elf_local_got_refcounts (ibfd);
4866 if (lgot_refs == NULL)
4867 abort ();
4868 local_plt = (struct plt_entry **)
4869 (lgot_refs + symtab_hdr->sh_info);
4870 lgot_masks = (char *) (local_plt + symtab_hdr->sh_info);
4871 tls_mask = &lgot_masks[r_symndx];
4872 got_count = &lgot_refs[r_symndx];
4873 }
4874
4875 if (tls_set == 0)
4876 {
4877 /* We managed to get rid of a got entry. */
4878 if (*got_count > 0)
4879 *got_count -= 1;
4880 }
4881
4882 *tls_mask |= tls_set;
4883 *tls_mask &= ~tls_clear;
4884 }
4885
4886 if (elf_section_data (sec)->relocs != relstart)
4887 free (relstart);
4888 }
4889
4890 if (locsyms != NULL
4891 && (symtab_hdr->contents != (unsigned char *) locsyms))
4892 {
4893 if (!info->keep_memory)
4894 free (locsyms);
4895 else
4896 symtab_hdr->contents = (unsigned char *) locsyms;
4897 }
4898 }
4899 return TRUE;
4900}
4901\f
4902/* Return true if we have dynamic relocs that apply to read-only sections. */
4903
4904static bfd_boolean
4905readonly_dynrelocs (struct elf_link_hash_entry *h)
4906{
4907 struct elf_dyn_relocs *p;
4908
4909 for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next)
4910 {
4911 asection *s = p->sec->output_section;
4912
4913 if (s != NULL
4914 && ((s->flags & (SEC_READONLY | SEC_ALLOC))
4915 == (SEC_READONLY | SEC_ALLOC)))
4916 return TRUE;
4917 }
4918 return FALSE;
4919}
4920
4921/* Adjust a symbol defined by a dynamic object and referenced by a
4922 regular object. The current definition is in some section of the
4923 dynamic object, but we're not including those sections. We have to
4924 change the definition to something the rest of the link can
4925 understand. */
4926
4927static bfd_boolean
4928ppc_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
4929 struct elf_link_hash_entry *h)
4930{
4931 struct ppc_elf_link_hash_table *htab;
4932 asection *s;
4933
4934#ifdef DEBUG
4935 fprintf (stderr, "ppc_elf_adjust_dynamic_symbol called for %s\n",
4936 h->root.root.string);
4937#endif
4938
4939 /* Make sure we know what is going on here. */
4940 htab = ppc_elf_hash_table (info);
4941 BFD_ASSERT (htab->elf.dynobj != NULL
4942 && (h->needs_plt
4943 || h->type == STT_GNU_IFUNC
4944 || h->u.weakdef != NULL
4945 || (h->def_dynamic
4946 && h->ref_regular
4947 && !h->def_regular)));
4948
4949 /* Deal with function syms. */
4950 if (h->type == STT_FUNC
4951 || h->type == STT_GNU_IFUNC
4952 || h->needs_plt)
4953 {
4954 /* Clear procedure linkage table information for any symbol that
4955 won't need a .plt entry. */
4956 struct plt_entry *ent;
4957 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
4958 if (ent->plt.refcount > 0)
4959 break;
4960 if (ent == NULL
4961 || (h->type != STT_GNU_IFUNC
4962 && (SYMBOL_CALLS_LOCAL (info, h)
4963 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
4964 && h->root.type == bfd_link_hash_undefweak))))
4965 {
4966 /* A PLT entry is not required/allowed when:
4967
4968 1. We are not using ld.so; because then the PLT entry
4969 can't be set up, so we can't use one. In this case,
4970 ppc_elf_adjust_dynamic_symbol won't even be called.
4971
4972 2. GC has rendered the entry unused.
4973
4974 3. We know for certain that a call to this symbol
4975 will go to this object, or will remain undefined. */
4976 h->plt.plist = NULL;
4977 h->needs_plt = 0;
4978 }
4979 else
4980 {
4981 /* After adjust_dynamic_symbol, non_got_ref set in the
4982 non-shared case means that we have allocated space in
4983 .dynbss for the symbol and thus dyn_relocs for this
4984 symbol should be discarded.
4985 If we get here we know we are making a PLT entry for this
4986 symbol, and in an executable we'd normally resolve
4987 relocations against this symbol to the PLT entry. Allow
4988 dynamic relocs if the reference is weak, and the dynamic
4989 relocs will not cause text relocation. */
4990 if (!h->ref_regular_nonweak
4991 && h->non_got_ref
4992 && h->type != STT_GNU_IFUNC
4993 && !htab->is_vxworks
4994 && !ppc_elf_hash_entry (h)->has_sda_refs
4995 && !readonly_dynrelocs (h))
4996 h->non_got_ref = 0;
4997 }
4998 return TRUE;
4999 }
5000 else
5001 h->plt.plist = NULL;
5002
5003 /* If this is a weak symbol, and there is a real definition, the
5004 processor independent code will have arranged for us to see the
5005 real definition first, and we can just use the same value. */
5006 if (h->u.weakdef != NULL)
5007 {
5008 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
5009 || h->u.weakdef->root.type == bfd_link_hash_defweak);
5010 h->root.u.def.section = h->u.weakdef->root.u.def.section;
5011 h->root.u.def.value = h->u.weakdef->root.u.def.value;
5012 if (ELIMINATE_COPY_RELOCS)
5013 h->non_got_ref = h->u.weakdef->non_got_ref;
5014 return TRUE;
5015 }
5016
5017 /* This is a reference to a symbol defined by a dynamic object which
5018 is not a function. */
5019
5020 /* If we are creating a shared library, we must presume that the
5021 only references to the symbol are via the global offset table.
5022 For such cases we need not do anything here; the relocations will
5023 be handled correctly by relocate_section. */
5024 if (info->shared)
5025 return TRUE;
5026
5027 /* If there are no references to this symbol that do not use the
5028 GOT, we don't need to generate a copy reloc. */
5029 if (!h->non_got_ref)
5030 return TRUE;
5031
5032 /* If we didn't find any dynamic relocs in read-only sections, then
5033 we'll be keeping the dynamic relocs and avoiding the copy reloc.
5034 We can't do this if there are any small data relocations. This
5035 doesn't work on VxWorks, where we can not have dynamic
5036 relocations (other than copy and jump slot relocations) in an
5037 executable. */
5038 if (ELIMINATE_COPY_RELOCS
5039 && !ppc_elf_hash_entry (h)->has_sda_refs
5040 && !htab->is_vxworks
5041 && !h->def_regular
5042 && !readonly_dynrelocs (h))
5043 {
5044 h->non_got_ref = 0;
5045 return TRUE;
5046 }
5047
5048 /* We must allocate the symbol in our .dynbss section, which will
5049 become part of the .bss section of the executable. There will be
5050 an entry for this symbol in the .dynsym section. The dynamic
5051 object will contain position independent code, so all references
5052 from the dynamic object to this symbol will go through the global
5053 offset table. The dynamic linker will use the .dynsym entry to
5054 determine the address it must put in the global offset table, so
5055 both the dynamic object and the regular object will refer to the
5056 same memory location for the variable.
5057
5058 Of course, if the symbol is referenced using SDAREL relocs, we
5059 must instead allocate it in .sbss. */
5060
5061 if (ppc_elf_hash_entry (h)->has_sda_refs)
5062 s = htab->dynsbss;
5063 else
5064 s = htab->dynbss;
5065 BFD_ASSERT (s != NULL);
5066
5067 /* We must generate a R_PPC_COPY reloc to tell the dynamic linker to
5068 copy the initial value out of the dynamic object and into the
5069 runtime process image. We need to remember the offset into the
5070 .rela.bss section we are going to use. */
5071 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
5072 {
5073 asection *srel;
5074
5075 if (ppc_elf_hash_entry (h)->has_sda_refs)
5076 srel = htab->relsbss;
5077 else
5078 srel = htab->relbss;
5079 BFD_ASSERT (srel != NULL);
5080 srel->size += sizeof (Elf32_External_Rela);
5081 h->needs_copy = 1;
5082 }
5083
5084 return _bfd_elf_adjust_dynamic_copy (h, s);
5085}
5086\f
5087/* Generate a symbol to mark plt call stubs. For non-PIC code the sym is
5088 xxxxxxxx.plt_call32.<callee> where xxxxxxxx is a hex number, usually 0,
5089 specifying the addend on the plt relocation. For -fpic code, the sym
5090 is xxxxxxxx.plt_pic32.<callee>, and for -fPIC
5091 xxxxxxxx.got2.plt_pic32.<callee>. */
5092
5093static bfd_boolean
5094add_stub_sym (struct plt_entry *ent,
5095 struct elf_link_hash_entry *h,
5096 struct bfd_link_info *info)
5097{
5098 struct elf_link_hash_entry *sh;
5099 size_t len1, len2, len3;
5100 char *name;
5101 const char *stub;
5102 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
5103
5104 if (info->shared)
5105 stub = ".plt_pic32.";
5106 else
5107 stub = ".plt_call32.";
5108
5109 len1 = strlen (h->root.root.string);
5110 len2 = strlen (stub);
5111 len3 = 0;
5112 if (ent->sec)
5113 len3 = strlen (ent->sec->name);
5114 name = bfd_malloc (len1 + len2 + len3 + 9);
5115 if (name == NULL)
5116 return FALSE;
5117 sprintf (name, "%08x", (unsigned) ent->addend & 0xffffffff);
5118 if (ent->sec)
5119 memcpy (name + 8, ent->sec->name, len3);
5120 memcpy (name + 8 + len3, stub, len2);
5121 memcpy (name + 8 + len3 + len2, h->root.root.string, len1 + 1);
5122 sh = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
5123 if (sh == NULL)
5124 return FALSE;
5125 if (sh->root.type == bfd_link_hash_new)
5126 {
5127 sh->root.type = bfd_link_hash_defined;
5128 sh->root.u.def.section = htab->glink;
5129 sh->root.u.def.value = ent->glink_offset;
5130 sh->ref_regular = 1;
5131 sh->def_regular = 1;
5132 sh->ref_regular_nonweak = 1;
5133 sh->forced_local = 1;
5134 sh->non_elf = 0;
5135 }
5136 return TRUE;
5137}
5138
5139/* Allocate NEED contiguous space in .got, and return the offset.
5140 Handles allocation of the got header when crossing 32k. */
5141
5142static bfd_vma
5143allocate_got (struct ppc_elf_link_hash_table *htab, unsigned int need)
5144{
5145 bfd_vma where;
5146 unsigned int max_before_header;
5147
5148 if (htab->plt_type == PLT_VXWORKS)
5149 {
5150 where = htab->got->size;
5151 htab->got->size += need;
5152 }
5153 else
5154 {
5155 max_before_header = htab->plt_type == PLT_NEW ? 32768 : 32764;
5156 if (need <= htab->got_gap)
5157 {
5158 where = max_before_header - htab->got_gap;
5159 htab->got_gap -= need;
5160 }
5161 else
5162 {
5163 if (htab->got->size + need > max_before_header
5164 && htab->got->size <= max_before_header)
5165 {
5166 htab->got_gap = max_before_header - htab->got->size;
5167 htab->got->size = max_before_header + htab->got_header_size;
5168 }
5169 where = htab->got->size;
5170 htab->got->size += need;
5171 }
5172 }
5173 return where;
5174}
5175
5176/* Allocate space in associated reloc sections for dynamic relocs. */
5177
5178static bfd_boolean
5179allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
5180{
5181 struct bfd_link_info *info = inf;
5182 struct ppc_elf_link_hash_entry *eh;
5183 struct ppc_elf_link_hash_table *htab;
5184 struct elf_dyn_relocs *p;
5185
5186 if (h->root.type == bfd_link_hash_indirect)
5187 return TRUE;
5188
5189 htab = ppc_elf_hash_table (info);
5190 if (htab->elf.dynamic_sections_created
5191 || h->type == STT_GNU_IFUNC)
5192 {
5193 struct plt_entry *ent;
5194 bfd_boolean doneone = FALSE;
5195 bfd_vma plt_offset = 0, glink_offset = 0;
5196 bfd_boolean dyn;
5197
5198 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
5199 if (ent->plt.refcount > 0)
5200 {
5201 /* Make sure this symbol is output as a dynamic symbol. */
5202 if (h->dynindx == -1
5203 && !h->forced_local
5204 && !h->def_regular
5205 && htab->elf.dynamic_sections_created)
5206 {
5207 if (! bfd_elf_link_record_dynamic_symbol (info, h))
5208 return FALSE;
5209 }
5210
5211 dyn = htab->elf.dynamic_sections_created;
5212 if (info->shared
5213 || h->type == STT_GNU_IFUNC
5214 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))
5215 {
5216 asection *s = htab->plt;
5217 if (!dyn || h->dynindx == -1)
5218 s = htab->iplt;
5219
5220 if (htab->plt_type == PLT_NEW || !dyn || h->dynindx == -1)
5221 {
5222 if (!doneone)
5223 {
5224 plt_offset = s->size;
5225 s->size += 4;
5226 }
5227 ent->plt.offset = plt_offset;
5228
5229 s = htab->glink;
5230 if (!doneone || info->shared)
5231 {
5232 glink_offset = s->size;
5233 s->size += GLINK_ENTRY_SIZE;
5234 if (h == htab->tls_get_addr
5235 && !htab->no_tls_get_addr_opt)
5236 s->size += TLS_GET_ADDR_GLINK_SIZE - GLINK_ENTRY_SIZE;
5237 }
5238 if (!doneone
5239 && !info->shared
5240 && h->def_dynamic
5241 && !h->def_regular)
5242 {
5243 h->root.u.def.section = s;
5244 h->root.u.def.value = glink_offset;
5245 }
5246 ent->glink_offset = glink_offset;
5247
5248 if (htab->emit_stub_syms
5249 && !add_stub_sym (ent, h, info))
5250 return FALSE;
5251 }
5252 else
5253 {
5254 if (!doneone)
5255 {
5256 /* If this is the first .plt entry, make room
5257 for the special first entry. */
5258 if (s->size == 0)
5259 s->size += htab->plt_initial_entry_size;
5260
5261 /* The PowerPC PLT is actually composed of two
5262 parts, the first part is 2 words (for a load
5263 and a jump), and then there is a remaining
5264 word available at the end. */
5265 plt_offset = (htab->plt_initial_entry_size
5266 + (htab->plt_slot_size
5267 * ((s->size
5268 - htab->plt_initial_entry_size)
5269 / htab->plt_entry_size)));
5270
5271 /* If this symbol is not defined in a regular
5272 file, and we are not generating a shared
5273 library, then set the symbol to this location
5274 in the .plt. This is to avoid text
5275 relocations, and is required to make
5276 function pointers compare as equal between
5277 the normal executable and the shared library. */
5278 if (! info->shared
5279 && h->def_dynamic
5280 && !h->def_regular)
5281 {
5282 h->root.u.def.section = s;
5283 h->root.u.def.value = plt_offset;
5284 }
5285
5286 /* Make room for this entry. */
5287 s->size += htab->plt_entry_size;
5288 /* After the 8192nd entry, room for two entries
5289 is allocated. */
5290 if (htab->plt_type == PLT_OLD
5291 && (s->size - htab->plt_initial_entry_size)
5292 / htab->plt_entry_size
5293 > PLT_NUM_SINGLE_ENTRIES)
5294 s->size += htab->plt_entry_size;
5295 }
5296 ent->plt.offset = plt_offset;
5297 }
5298
5299 /* We also need to make an entry in the .rela.plt section. */
5300 if (!doneone)
5301 {
5302 if (!htab->elf.dynamic_sections_created
5303 || h->dynindx == -1)
5304 htab->reliplt->size += sizeof (Elf32_External_Rela);
5305 else
5306 {
5307 htab->relplt->size += sizeof (Elf32_External_Rela);
5308
5309 if (htab->plt_type == PLT_VXWORKS)
5310 {
5311 /* Allocate space for the unloaded relocations. */
5312 if (!info->shared
5313 && htab->elf.dynamic_sections_created)
5314 {
5315 if (ent->plt.offset
5316 == (bfd_vma) htab->plt_initial_entry_size)
5317 {
5318 htab->srelplt2->size
5319 += (sizeof (Elf32_External_Rela)
5320 * VXWORKS_PLTRESOLVE_RELOCS);
5321 }
5322
5323 htab->srelplt2->size
5324 += (sizeof (Elf32_External_Rela)
5325 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS);
5326 }
5327
5328 /* Every PLT entry has an associated GOT entry in
5329 .got.plt. */
5330 htab->sgotplt->size += 4;
5331 }
5332 }
5333 doneone = TRUE;
5334 }
5335 }
5336 else
5337 ent->plt.offset = (bfd_vma) -1;
5338 }
5339 else
5340 ent->plt.offset = (bfd_vma) -1;
5341
5342 if (!doneone)
5343 {
5344 h->plt.plist = NULL;
5345 h->needs_plt = 0;
5346 }
5347 }
5348 else
5349 {
5350 h->plt.plist = NULL;
5351 h->needs_plt = 0;
5352 }
5353
5354 eh = (struct ppc_elf_link_hash_entry *) h;
5355 if (eh->elf.got.refcount > 0)
5356 {
5357 bfd_boolean dyn;
5358 unsigned int need;
5359
5360 /* Make sure this symbol is output as a dynamic symbol. */
5361 if (eh->elf.dynindx == -1
5362 && !eh->elf.forced_local
5363 && eh->elf.type != STT_GNU_IFUNC
5364 && htab->elf.dynamic_sections_created)
5365 {
5366 if (!bfd_elf_link_record_dynamic_symbol (info, &eh->elf))
5367 return FALSE;
5368 }
5369
5370 need = 0;
5371 if ((eh->tls_mask & TLS_TLS) != 0)
5372 {
5373 if ((eh->tls_mask & TLS_LD) != 0)
5374 {
5375 if (!eh->elf.def_dynamic)
5376 /* We'll just use htab->tlsld_got.offset. This should
5377 always be the case. It's a little odd if we have
5378 a local dynamic reloc against a non-local symbol. */
5379 htab->tlsld_got.refcount += 1;
5380 else
5381 need += 8;
5382 }
5383 if ((eh->tls_mask & TLS_GD) != 0)
5384 need += 8;
5385 if ((eh->tls_mask & (TLS_TPREL | TLS_TPRELGD)) != 0)
5386 need += 4;
5387 if ((eh->tls_mask & TLS_DTPREL) != 0)
5388 need += 4;
5389 }
5390 else
5391 need += 4;
5392 if (need == 0)
5393 eh->elf.got.offset = (bfd_vma) -1;
5394 else
5395 {
5396 eh->elf.got.offset = allocate_got (htab, need);
5397 dyn = htab->elf.dynamic_sections_created;
5398 if ((info->shared
5399 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, &eh->elf))
5400 && (ELF_ST_VISIBILITY (eh->elf.other) == STV_DEFAULT
5401 || eh->elf.root.type != bfd_link_hash_undefweak))
5402 {
5403 asection *rsec = htab->relgot;
5404 /* All the entries we allocated need relocs.
5405 Except LD only needs one. */
5406 if ((eh->tls_mask & TLS_LD) != 0
5407 && eh->elf.def_dynamic)
5408 need -= 4;
5409 rsec->size += need * (sizeof (Elf32_External_Rela) / 4);
5410 }
5411 }
5412 }
5413 else
5414 eh->elf.got.offset = (bfd_vma) -1;
5415
5416 if (eh->dyn_relocs == NULL
5417 || !htab->elf.dynamic_sections_created)
5418 return TRUE;
5419
5420 /* In the shared -Bsymbolic case, discard space allocated for
5421 dynamic pc-relative relocs against symbols which turn out to be
5422 defined in regular objects. For the normal shared case, discard
5423 space for relocs that have become local due to symbol visibility
5424 changes. */
5425
5426 if (info->shared)
5427 {
5428 /* Relocs that use pc_count are those that appear on a call insn,
5429 or certain REL relocs (see must_be_dyn_reloc) that can be
5430 generated via assembly. We want calls to protected symbols to
5431 resolve directly to the function rather than going via the plt.
5432 If people want function pointer comparisons to work as expected
5433 then they should avoid writing weird assembly. */
5434 if (SYMBOL_CALLS_LOCAL (info, h))
5435 {
5436 struct elf_dyn_relocs **pp;
5437
5438 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
5439 {
5440 p->count -= p->pc_count;
5441 p->pc_count = 0;
5442 if (p->count == 0)
5443 *pp = p->next;
5444 else
5445 pp = &p->next;
5446 }
5447 }
5448
5449 if (htab->is_vxworks)
5450 {
5451 struct elf_dyn_relocs **pp;
5452
5453 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
5454 {
5455 if (strcmp (p->sec->output_section->name, ".tls_vars") == 0)
5456 *pp = p->next;
5457 else
5458 pp = &p->next;
5459 }
5460 }
5461
5462 /* Discard relocs on undefined symbols that must be local. */
5463 if (eh->dyn_relocs != NULL
5464 && h->root.type == bfd_link_hash_undefined
5465 && (ELF_ST_VISIBILITY (h->other) == STV_HIDDEN
5466 || ELF_ST_VISIBILITY (h->other) == STV_INTERNAL))
5467 eh->dyn_relocs = NULL;
5468
5469 /* Also discard relocs on undefined weak syms with non-default
5470 visibility. */
5471 if (eh->dyn_relocs != NULL
5472 && h->root.type == bfd_link_hash_undefweak)
5473 {
5474 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
5475 eh->dyn_relocs = NULL;
5476
5477 /* Make sure undefined weak symbols are output as a dynamic
5478 symbol in PIEs. */
5479 else if (h->dynindx == -1
5480 && !h->forced_local
5481 && !h->def_regular)
5482 {
5483 if (! bfd_elf_link_record_dynamic_symbol (info, h))
5484 return FALSE;
5485 }
5486 }
5487 }
5488 else if (ELIMINATE_COPY_RELOCS)
5489 {
5490 /* For the non-shared case, discard space for relocs against
5491 symbols which turn out to need copy relocs or are not
5492 dynamic. */
5493
5494 if (!h->non_got_ref
5495 && !h->def_regular)
5496 {
5497 /* Make sure this symbol is output as a dynamic symbol.
5498 Undefined weak syms won't yet be marked as dynamic. */
5499 if (h->dynindx == -1
5500 && !h->forced_local)
5501 {
5502 if (! bfd_elf_link_record_dynamic_symbol (info, h))
5503 return FALSE;
5504 }
5505
5506 /* If that succeeded, we know we'll be keeping all the
5507 relocs. */
5508 if (h->dynindx != -1)
5509 goto keep;
5510 }
5511
5512 eh->dyn_relocs = NULL;
5513
5514 keep: ;
5515 }
5516
5517 /* Finally, allocate space. */
5518 for (p = eh->dyn_relocs; p != NULL; p = p->next)
5519 {
5520 asection *sreloc = elf_section_data (p->sec)->sreloc;
5521 if (!htab->elf.dynamic_sections_created)
5522 sreloc = htab->reliplt;
5523 sreloc->size += p->count * sizeof (Elf32_External_Rela);
5524 }
5525
5526 return TRUE;
5527}
5528
5529/* Set DF_TEXTREL if we find any dynamic relocs that apply to
5530 read-only sections. */
5531
5532static bfd_boolean
5533maybe_set_textrel (struct elf_link_hash_entry *h, void *info)
5534{
5535 if (h->root.type == bfd_link_hash_indirect)
5536 return TRUE;
5537
5538 if (readonly_dynrelocs (h))
5539 {
5540 ((struct bfd_link_info *) info)->flags |= DF_TEXTREL;
5541
5542 /* Not an error, just cut short the traversal. */
5543 return FALSE;
5544 }
5545 return TRUE;
5546}
5547
5548static const unsigned char glink_eh_frame_cie[] =
5549{
5550 0, 0, 0, 16, /* length. */
5551 0, 0, 0, 0, /* id. */
5552 1, /* CIE version. */
5553 'z', 'R', 0, /* Augmentation string. */
5554 4, /* Code alignment. */
5555 0x7c, /* Data alignment. */
5556 65, /* RA reg. */
5557 1, /* Augmentation size. */
5558 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding. */
5559 DW_CFA_def_cfa, 1, 0 /* def_cfa: r1 offset 0. */
5560};
5561
5562/* Set the sizes of the dynamic sections. */
5563
5564static bfd_boolean
5565ppc_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
5566 struct bfd_link_info *info)
5567{
5568 struct ppc_elf_link_hash_table *htab;
5569 asection *s;
5570 bfd_boolean relocs;
5571 bfd *ibfd;
5572
5573#ifdef DEBUG
5574 fprintf (stderr, "ppc_elf_size_dynamic_sections called\n");
5575#endif
5576
5577 htab = ppc_elf_hash_table (info);
5578 BFD_ASSERT (htab->elf.dynobj != NULL);
5579
5580 if (elf_hash_table (info)->dynamic_sections_created)
5581 {
5582 /* Set the contents of the .interp section to the interpreter. */
5583 if (info->executable)
5584 {
5585 s = bfd_get_section_by_name (htab->elf.dynobj, ".interp");
5586 BFD_ASSERT (s != NULL);
5587 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
5588 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
5589 }
5590 }
5591
5592 if (htab->plt_type == PLT_OLD)
5593 htab->got_header_size = 16;
5594 else if (htab->plt_type == PLT_NEW)
5595 htab->got_header_size = 12;
5596
5597 /* Set up .got offsets for local syms, and space for local dynamic
5598 relocs. */
5599 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
5600 {
5601 bfd_signed_vma *local_got;
5602 bfd_signed_vma *end_local_got;
5603 struct plt_entry **local_plt;
5604 struct plt_entry **end_local_plt;
5605 char *lgot_masks;
5606 bfd_size_type locsymcount;
5607 Elf_Internal_Shdr *symtab_hdr;
5608
5609 if (!is_ppc_elf (ibfd))
5610 continue;
5611
5612 for (s = ibfd->sections; s != NULL; s = s->next)
5613 {
5614 struct elf_dyn_relocs *p;
5615
5616 for (p = ((struct elf_dyn_relocs *)
5617 elf_section_data (s)->local_dynrel);
5618 p != NULL;
5619 p = p->next)
5620 {
5621 if (!bfd_is_abs_section (p->sec)
5622 && bfd_is_abs_section (p->sec->output_section))
5623 {
5624 /* Input section has been discarded, either because
5625 it is a copy of a linkonce section or due to
5626 linker script /DISCARD/, so we'll be discarding
5627 the relocs too. */
5628 }
5629 else if (htab->is_vxworks
5630 && strcmp (p->sec->output_section->name,
5631 ".tls_vars") == 0)
5632 {
5633 /* Relocations in vxworks .tls_vars sections are
5634 handled specially by the loader. */
5635 }
5636 else if (p->count != 0)
5637 {
5638 asection *sreloc = elf_section_data (p->sec)->sreloc;
5639 if (!htab->elf.dynamic_sections_created)
5640 sreloc = htab->reliplt;
5641 sreloc->size += p->count * sizeof (Elf32_External_Rela);
5642 if ((p->sec->output_section->flags
5643 & (SEC_READONLY | SEC_ALLOC))
5644 == (SEC_READONLY | SEC_ALLOC))
5645 info->flags |= DF_TEXTREL;
5646 }
5647 }
5648 }
5649
5650 local_got = elf_local_got_refcounts (ibfd);
5651 if (!local_got)
5652 continue;
5653
5654 symtab_hdr = &elf_symtab_hdr (ibfd);
5655 locsymcount = symtab_hdr->sh_info;
5656 end_local_got = local_got + locsymcount;
5657 local_plt = (struct plt_entry **) end_local_got;
5658 end_local_plt = local_plt + locsymcount;
5659 lgot_masks = (char *) end_local_plt;
5660
5661 for (; local_got < end_local_got; ++local_got, ++lgot_masks)
5662 if (*local_got > 0)
5663 {
5664 unsigned int need = 0;
5665 if ((*lgot_masks & TLS_TLS) != 0)
5666 {
5667 if ((*lgot_masks & TLS_GD) != 0)
5668 need += 8;
5669 if ((*lgot_masks & TLS_LD) != 0)
5670 htab->tlsld_got.refcount += 1;
5671 if ((*lgot_masks & (TLS_TPREL | TLS_TPRELGD)) != 0)
5672 need += 4;
5673 if ((*lgot_masks & TLS_DTPREL) != 0)
5674 need += 4;
5675 }
5676 else
5677 need += 4;
5678 if (need == 0)
5679 *local_got = (bfd_vma) -1;
5680 else
5681 {
5682 *local_got = allocate_got (htab, need);
5683 if (info->shared)
5684 htab->relgot->size += (need
5685 * (sizeof (Elf32_External_Rela) / 4));
5686 }
5687 }
5688 else
5689 *local_got = (bfd_vma) -1;
5690
5691 if (htab->is_vxworks)
5692 continue;
5693
5694 /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */
5695 for (; local_plt < end_local_plt; ++local_plt)
5696 {
5697 struct plt_entry *ent;
5698 bfd_boolean doneone = FALSE;
5699 bfd_vma plt_offset = 0, glink_offset = 0;
5700
5701 for (ent = *local_plt; ent != NULL; ent = ent->next)
5702 if (ent->plt.refcount > 0)
5703 {
5704 s = htab->iplt;
5705
5706 if (!doneone)
5707 {
5708 plt_offset = s->size;
5709 s->size += 4;
5710 }
5711 ent->plt.offset = plt_offset;
5712
5713 s = htab->glink;
5714 if (!doneone || info->shared)
5715 {
5716 glink_offset = s->size;
5717 s->size += GLINK_ENTRY_SIZE;
5718 }
5719 ent->glink_offset = glink_offset;
5720
5721 if (!doneone)
5722 {
5723 htab->reliplt->size += sizeof (Elf32_External_Rela);
5724 doneone = TRUE;
5725 }
5726 }
5727 else
5728 ent->plt.offset = (bfd_vma) -1;
5729 }
5730 }
5731
5732 /* Allocate space for global sym dynamic relocs. */
5733 elf_link_hash_traverse (elf_hash_table (info), allocate_dynrelocs, info);
5734
5735 if (htab->tlsld_got.refcount > 0)
5736 {
5737 htab->tlsld_got.offset = allocate_got (htab, 8);
5738 if (info->shared)
5739 htab->relgot->size += sizeof (Elf32_External_Rela);
5740 }
5741 else
5742 htab->tlsld_got.offset = (bfd_vma) -1;
5743
5744 if (htab->got != NULL && htab->plt_type != PLT_VXWORKS)
5745 {
5746 unsigned int g_o_t = 32768;
5747
5748 /* If we haven't allocated the header, do so now. When we get here,
5749 for old plt/got the got size will be 0 to 32764 (not allocated),
5750 or 32780 to 65536 (header allocated). For new plt/got, the
5751 corresponding ranges are 0 to 32768 and 32780 to 65536. */
5752 if (htab->got->size <= 32768)
5753 {
5754 g_o_t = htab->got->size;
5755 if (htab->plt_type == PLT_OLD)
5756 g_o_t += 4;
5757 htab->got->size += htab->got_header_size;
5758 }
5759
5760 htab->elf.hgot->root.u.def.value = g_o_t;
5761 }
5762 if (info->shared)
5763 {
5764 struct elf_link_hash_entry *sda = htab->sdata[0].sym;
5765 if (sda != NULL
5766 && !(sda->root.type == bfd_link_hash_defined
5767 || sda->root.type == bfd_link_hash_defweak))
5768 {
5769 sda->root.type = bfd_link_hash_defined;
5770 sda->root.u.def.section = htab->elf.hgot->root.u.def.section;
5771 sda->root.u.def.value = htab->elf.hgot->root.u.def.value;
5772 }
5773 }
5774
5775 if (htab->glink != NULL
5776 && htab->glink->size != 0
5777 && htab->elf.dynamic_sections_created)
5778 {
5779 htab->glink_pltresolve = htab->glink->size;
5780 /* Space for the branch table. */
5781 htab->glink->size += htab->glink->size / (GLINK_ENTRY_SIZE / 4) - 4;
5782 /* Pad out to align the start of PLTresolve. */
5783 htab->glink->size += -htab->glink->size & 15;
5784 htab->glink->size += GLINK_PLTRESOLVE;
5785
5786 if (htab->emit_stub_syms)
5787 {
5788 struct elf_link_hash_entry *sh;
5789 sh = elf_link_hash_lookup (&htab->elf, "__glink",
5790 TRUE, FALSE, FALSE);
5791 if (sh == NULL)
5792 return FALSE;
5793 if (sh->root.type == bfd_link_hash_new)
5794 {
5795 sh->root.type = bfd_link_hash_defined;
5796 sh->root.u.def.section = htab->glink;
5797 sh->root.u.def.value = htab->glink_pltresolve;
5798 sh->ref_regular = 1;
5799 sh->def_regular = 1;
5800 sh->ref_regular_nonweak = 1;
5801 sh->forced_local = 1;
5802 sh->non_elf = 0;
5803 }
5804 sh = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve",
5805 TRUE, FALSE, FALSE);
5806 if (sh == NULL)
5807 return FALSE;
5808 if (sh->root.type == bfd_link_hash_new)
5809 {
5810 sh->root.type = bfd_link_hash_defined;
5811 sh->root.u.def.section = htab->glink;
5812 sh->root.u.def.value = htab->glink->size - GLINK_PLTRESOLVE;
5813 sh->ref_regular = 1;
5814 sh->def_regular = 1;
5815 sh->ref_regular_nonweak = 1;
5816 sh->forced_local = 1;
5817 sh->non_elf = 0;
5818 }
5819 }
5820 }
5821
5822 if (htab->glink != NULL
5823 && htab->glink->size != 0
5824 && htab->glink_eh_frame != NULL
5825 && !bfd_is_abs_section (htab->glink_eh_frame->output_section))
5826 {
5827 s = htab->glink_eh_frame;
5828 s->size = sizeof (glink_eh_frame_cie) + 20;
5829 if (info->shared)
5830 {
5831 s->size += 4;
5832 if (htab->glink->size - GLINK_PLTRESOLVE + 8 >= 256)
5833 s->size += 4;
5834 }
5835 }
5836
5837 /* We've now determined the sizes of the various dynamic sections.
5838 Allocate memory for them. */
5839 relocs = FALSE;
5840 for (s = htab->elf.dynobj->sections; s != NULL; s = s->next)
5841 {
5842 bfd_boolean strip_section = TRUE;
5843
5844 if ((s->flags & SEC_LINKER_CREATED) == 0)
5845 continue;
5846
5847 if (s == htab->plt
5848 || s == htab->got)
5849 {
5850 /* We'd like to strip these sections if they aren't needed, but if
5851 we've exported dynamic symbols from them we must leave them.
5852 It's too late to tell BFD to get rid of the symbols. */
5853 if (htab->elf.hplt != NULL)
5854 strip_section = FALSE;
5855 /* Strip this section if we don't need it; see the
5856 comment below. */
5857 }
5858 else if (s == htab->iplt
5859 || s == htab->glink
5860 || s == htab->glink_eh_frame
5861 || s == htab->sgotplt
5862 || s == htab->sbss
5863 || s == htab->dynbss
5864 || s == htab->dynsbss
5865 || s == htab->sdata[0].section
5866 || s == htab->sdata[1].section)
5867 {
5868 /* Strip these too. */
5869 }
5870 else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela"))
5871 {
5872 if (s->size != 0)
5873 {
5874 /* Remember whether there are any relocation sections. */
5875 relocs = TRUE;
5876
5877 /* We use the reloc_count field as a counter if we need
5878 to copy relocs into the output file. */
5879 s->reloc_count = 0;
5880 }
5881 }
5882 else
5883 {
5884 /* It's not one of our sections, so don't allocate space. */
5885 continue;
5886 }
5887
5888 if (s->size == 0 && strip_section)
5889 {
5890 /* If we don't need this section, strip it from the
5891 output file. This is mostly to handle .rela.bss and
5892 .rela.plt. We must create both sections in
5893 create_dynamic_sections, because they must be created
5894 before the linker maps input sections to output
5895 sections. The linker does that before
5896 adjust_dynamic_symbol is called, and it is that
5897 function which decides whether anything needs to go
5898 into these sections. */
5899 s->flags |= SEC_EXCLUDE;
5900 continue;
5901 }
5902
5903 if ((s->flags & SEC_HAS_CONTENTS) == 0)
5904 continue;
5905
5906 /* Allocate memory for the section contents. */
5907 s->contents = bfd_zalloc (htab->elf.dynobj, s->size);
5908 if (s->contents == NULL)
5909 return FALSE;
5910 }
5911
5912 if (htab->elf.dynamic_sections_created)
5913 {
5914 /* Add some entries to the .dynamic section. We fill in the
5915 values later, in ppc_elf_finish_dynamic_sections, but we
5916 must add the entries now so that we get the correct size for
5917 the .dynamic section. The DT_DEBUG entry is filled in by the
5918 dynamic linker and used by the debugger. */
5919#define add_dynamic_entry(TAG, VAL) \
5920 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
5921
5922 if (info->executable)
5923 {
5924 if (!add_dynamic_entry (DT_DEBUG, 0))
5925 return FALSE;
5926 }
5927
5928 if (htab->plt != NULL && htab->plt->size != 0)
5929 {
5930 if (!add_dynamic_entry (DT_PLTGOT, 0)
5931 || !add_dynamic_entry (DT_PLTRELSZ, 0)
5932 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
5933 || !add_dynamic_entry (DT_JMPREL, 0))
5934 return FALSE;
5935 }
5936
5937 if (htab->glink != NULL && htab->glink->size != 0)
5938 {
5939 if (!add_dynamic_entry (DT_PPC_GOT, 0))
5940 return FALSE;
5941 if (!htab->no_tls_get_addr_opt
5942 && htab->tls_get_addr != NULL
5943 && htab->tls_get_addr->plt.plist != NULL
5944 && !add_dynamic_entry (DT_PPC_TLSOPT, 0))
5945 return FALSE;
5946 }
5947
5948 if (relocs)
5949 {
5950 if (!add_dynamic_entry (DT_RELA, 0)
5951 || !add_dynamic_entry (DT_RELASZ, 0)
5952 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
5953 return FALSE;
5954 }
5955
5956 /* If any dynamic relocs apply to a read-only section, then we
5957 need a DT_TEXTREL entry. */
5958 if ((info->flags & DF_TEXTREL) == 0)
5959 elf_link_hash_traverse (elf_hash_table (info), maybe_set_textrel,
5960 info);
5961
5962 if ((info->flags & DF_TEXTREL) != 0)
5963 {
5964 if (!add_dynamic_entry (DT_TEXTREL, 0))
5965 return FALSE;
5966 }
5967 if (htab->is_vxworks
5968 && !elf_vxworks_add_dynamic_entries (output_bfd, info))
5969 return FALSE;
5970 }
5971#undef add_dynamic_entry
5972
5973 return TRUE;
5974}
5975
5976/* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
5977
5978static bfd_boolean
5979ppc_elf_hash_symbol (struct elf_link_hash_entry *h)
5980{
5981 if (h->plt.plist != NULL
5982 && !h->def_regular
5983 && (!h->pointer_equality_needed
5984 || !h->ref_regular_nonweak))
5985 return FALSE;
5986
5987 return _bfd_elf_hash_symbol (h);
5988}
5989\f
5990#define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0]))
5991
5992/* Relaxation trampolines. r12 is available for clobbering (r11, is
5993 used for some functions that are allowed to break the ABI). */
5994static const int shared_stub_entry[] =
5995 {
5996 0x7c0802a6, /* mflr 0 */
5997 0x429f0005, /* bcl 20, 31, .Lxxx */
5998 0x7d8802a6, /* mflr 12 */
5999 0x3d8c0000, /* addis 12, 12, (xxx-.Lxxx)@ha */
6000 0x398c0008, /* addi 12, 12, (xxx-.Lxxx)@l */
6001 0x7c0803a6, /* mtlr 0 */
6002 0x7d8903a6, /* mtctr 12 */
6003 0x4e800420, /* bctr */
6004 };
6005
6006static const int stub_entry[] =
6007 {
6008 0x3d800000, /* lis 12,xxx@ha */
6009 0x398c0000, /* addi 12,12,xxx@l */
6010 0x7d8903a6, /* mtctr 12 */
6011 0x4e800420, /* bctr */
6012 };
6013
6014static bfd_boolean
6015ppc_elf_relax_section (bfd *abfd,
6016 asection *isec,
6017 struct bfd_link_info *link_info,
6018 bfd_boolean *again)
6019{
6020 struct one_fixup
6021 {
6022 struct one_fixup *next;
6023 asection *tsec;
6024 /* Final link, can use the symbol offset. For a
6025 relocatable link we use the symbol's index. */
6026 bfd_vma toff;
6027 bfd_vma trampoff;
6028 };
6029
6030 Elf_Internal_Shdr *symtab_hdr;
6031 bfd_byte *contents = NULL;
6032 Elf_Internal_Sym *isymbuf = NULL;
6033 Elf_Internal_Rela *internal_relocs = NULL;
6034 Elf_Internal_Rela *irel, *irelend;
6035 struct one_fixup *fixups = NULL;
6036 unsigned changes = 0;
6037 struct ppc_elf_link_hash_table *htab;
6038 bfd_size_type trampoff;
6039 asection *got2;
6040 bfd_boolean maybe_pasted;
6041
6042 *again = FALSE;
6043
6044 /* Nothing to do if there are no relocations, and no need to do
6045 anything with non-alloc or non-code sections. */
6046 if ((isec->flags & SEC_ALLOC) == 0
6047 || (isec->flags & SEC_CODE) == 0
6048 || (isec->flags & SEC_RELOC) == 0
6049 || isec->reloc_count == 0)
6050 return TRUE;
6051
6052 /* We cannot represent the required PIC relocs in the output, so don't
6053 do anything. The linker doesn't support mixing -shared and -r
6054 anyway. */
6055 if (link_info->relocatable && link_info->shared)
6056 return TRUE;
6057
6058 trampoff = (isec->size + 3) & (bfd_vma) -4;
6059 maybe_pasted = (strcmp (isec->output_section->name, ".init") == 0
6060 || strcmp (isec->output_section->name, ".fini") == 0);
6061 /* Space for a branch around any trampolines. */
6062 if (maybe_pasted)
6063 trampoff += 4;
6064
6065 symtab_hdr = &elf_symtab_hdr (abfd);
6066
6067 /* Get a copy of the native relocations. */
6068 internal_relocs = _bfd_elf_link_read_relocs (abfd, isec, NULL, NULL,
6069 link_info->keep_memory);
6070 if (internal_relocs == NULL)
6071 goto error_return;
6072
6073 htab = ppc_elf_hash_table (link_info);
6074 got2 = bfd_get_section_by_name (abfd, ".got2");
6075
6076 irelend = internal_relocs + isec->reloc_count;
6077 for (irel = internal_relocs; irel < irelend; irel++)
6078 {
6079 unsigned long r_type = ELF32_R_TYPE (irel->r_info);
6080 bfd_vma toff, roff;
6081 asection *tsec;
6082 struct one_fixup *f;
6083 size_t insn_offset = 0;
6084 bfd_vma max_branch_offset, val;
6085 bfd_byte *hit_addr;
6086 unsigned long t0;
6087 struct elf_link_hash_entry *h;
6088 struct plt_entry **plist;
6089 unsigned char sym_type;
6090
6091 switch (r_type)
6092 {
6093 case R_PPC_REL24:
6094 case R_PPC_LOCAL24PC:
6095 case R_PPC_PLTREL24:
6096 max_branch_offset = 1 << 25;
6097 break;
6098
6099 case R_PPC_REL14:
6100 case R_PPC_REL14_BRTAKEN:
6101 case R_PPC_REL14_BRNTAKEN:
6102 max_branch_offset = 1 << 15;
6103 break;
6104
6105 default:
6106 continue;
6107 }
6108
6109 /* Get the value of the symbol referred to by the reloc. */
6110 h = NULL;
6111 if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
6112 {
6113 /* A local symbol. */
6114 Elf_Internal_Sym *isym;
6115
6116 /* Read this BFD's local symbols. */
6117 if (isymbuf == NULL)
6118 {
6119 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
6120 if (isymbuf == NULL)
6121 isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
6122 symtab_hdr->sh_info, 0,
6123 NULL, NULL, NULL);
6124 if (isymbuf == 0)
6125 goto error_return;
6126 }
6127 isym = isymbuf + ELF32_R_SYM (irel->r_info);
6128 if (isym->st_shndx == SHN_UNDEF)
6129 tsec = bfd_und_section_ptr;
6130 else if (isym->st_shndx == SHN_ABS)
6131 tsec = bfd_abs_section_ptr;
6132 else if (isym->st_shndx == SHN_COMMON)
6133 tsec = bfd_com_section_ptr;
6134 else
6135 tsec = bfd_section_from_elf_index (abfd, isym->st_shndx);
6136
6137 toff = isym->st_value;
6138 sym_type = ELF_ST_TYPE (isym->st_info);
6139 }
6140 else
6141 {
6142 /* Global symbol handling. */
6143 unsigned long indx;
6144
6145 indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
6146 h = elf_sym_hashes (abfd)[indx];
6147
6148 while (h->root.type == bfd_link_hash_indirect
6149 || h->root.type == bfd_link_hash_warning)
6150 h = (struct elf_link_hash_entry *) h->root.u.i.link;
6151
6152 if (h->root.type == bfd_link_hash_defined
6153 || h->root.type == bfd_link_hash_defweak)
6154 {
6155 tsec = h->root.u.def.section;
6156 toff = h->root.u.def.value;
6157 }
6158 else if (h->root.type == bfd_link_hash_undefined
6159 || h->root.type == bfd_link_hash_undefweak)
6160 {
6161 tsec = bfd_und_section_ptr;
6162 toff = link_info->relocatable ? indx : 0;
6163 }
6164 else
6165 continue;
6166
6167 sym_type = h->type;
6168 }
6169
6170 /* The condition here under which we call find_plt_ent must
6171 match that in relocate_section. If we call find_plt_ent here
6172 but not in relocate_section, or vice versa, then the branch
6173 destination used here may be incorrect. */
6174 plist = NULL;
6175 if (h != NULL)
6176 {
6177 /* We know is_branch_reloc (r_type) is true. */
6178 if (h->type == STT_GNU_IFUNC
6179 || r_type == R_PPC_PLTREL24)
6180 plist = &h->plt.plist;
6181 }
6182 else if (sym_type == STT_GNU_IFUNC
6183 && elf_local_got_offsets (abfd) != NULL)
6184 {
6185 bfd_vma *local_got_offsets = elf_local_got_offsets (abfd);
6186 struct plt_entry **local_plt = (struct plt_entry **)
6187 (local_got_offsets + symtab_hdr->sh_info);
6188 plist = local_plt + ELF32_R_SYM (irel->r_info);
6189 }
6190 if (plist != NULL)
6191 {
6192 bfd_vma addend = 0;
6193 struct plt_entry *ent;
6194
6195 if (r_type == R_PPC_PLTREL24 && link_info->shared)
6196 addend = irel->r_addend;
6197 ent = find_plt_ent (plist, got2, addend);
6198 if (ent != NULL)
6199 {
6200 if (htab->plt_type == PLT_NEW
6201 || h == NULL
6202 || !htab->elf.dynamic_sections_created
6203 || h->dynindx == -1)
6204 {
6205 tsec = htab->glink;
6206 toff = ent->glink_offset;
6207 }
6208 else
6209 {
6210 tsec = htab->plt;
6211 toff = ent->plt.offset;
6212 }
6213 }
6214 }
6215
6216 /* If the branch and target are in the same section, you have
6217 no hope of adding stubs. We'll error out later should the
6218 branch overflow. */
6219 if (tsec == isec)
6220 continue;
6221
6222 /* There probably isn't any reason to handle symbols in
6223 SEC_MERGE sections; SEC_MERGE doesn't seem a likely
6224 attribute for a code section, and we are only looking at
6225 branches. However, implement it correctly here as a
6226 reference for other target relax_section functions. */
6227 if (0 && tsec->sec_info_type == ELF_INFO_TYPE_MERGE)
6228 {
6229 /* At this stage in linking, no SEC_MERGE symbol has been
6230 adjusted, so all references to such symbols need to be
6231 passed through _bfd_merged_section_offset. (Later, in
6232 relocate_section, all SEC_MERGE symbols *except* for
6233 section symbols have been adjusted.)
6234
6235 gas may reduce relocations against symbols in SEC_MERGE
6236 sections to a relocation against the section symbol when
6237 the original addend was zero. When the reloc is against
6238 a section symbol we should include the addend in the
6239 offset passed to _bfd_merged_section_offset, since the
6240 location of interest is the original symbol. On the
6241 other hand, an access to "sym+addend" where "sym" is not
6242 a section symbol should not include the addend; Such an
6243 access is presumed to be an offset from "sym"; The
6244 location of interest is just "sym". */
6245 if (sym_type == STT_SECTION)
6246 toff += irel->r_addend;
6247
6248 toff = _bfd_merged_section_offset (abfd, &tsec,
6249 elf_section_data (tsec)->sec_info,
6250 toff);
6251
6252 if (sym_type != STT_SECTION)
6253 toff += irel->r_addend;
6254 }
6255 /* PLTREL24 addends are special. */
6256 else if (r_type != R_PPC_PLTREL24)
6257 toff += irel->r_addend;
6258
6259 /* Attempted -shared link of non-pic code loses. */
6260 if (tsec->output_section == NULL)
6261 continue;
6262
6263 roff = irel->r_offset;
6264
6265 /* If the branch is in range, no need to do anything. */
6266 if (tsec != bfd_und_section_ptr
6267 && (!link_info->relocatable
6268 /* A relocatable link may have sections moved during
6269 final link, so do not presume they remain in range. */
6270 || tsec->output_section == isec->output_section))
6271 {
6272 bfd_vma symaddr, reladdr;
6273
6274 symaddr = tsec->output_section->vma + tsec->output_offset + toff;
6275 reladdr = isec->output_section->vma + isec->output_offset + roff;
6276 if (symaddr - reladdr + max_branch_offset < 2 * max_branch_offset)
6277 continue;
6278 }
6279
6280 /* Look for an existing fixup to this address. */
6281 for (f = fixups; f ; f = f->next)
6282 if (f->tsec == tsec && f->toff == toff)
6283 break;
6284
6285 if (f == NULL)
6286 {
6287 size_t size;
6288 unsigned long stub_rtype;
6289
6290 val = trampoff - roff;
6291 if (val >= max_branch_offset)
6292 /* Oh dear, we can't reach a trampoline. Don't try to add
6293 one. We'll report an error later. */
6294 continue;
6295
6296 if (link_info->shared)
6297 {
6298 size = 4 * ARRAY_SIZE (shared_stub_entry);
6299 insn_offset = 12;
6300 }
6301 else
6302 {
6303 size = 4 * ARRAY_SIZE (stub_entry);
6304 insn_offset = 0;
6305 }
6306 stub_rtype = R_PPC_RELAX;
6307 if (tsec == htab->plt
6308 || tsec == htab->glink)
6309 {
6310 stub_rtype = R_PPC_RELAX_PLT;
6311 if (r_type == R_PPC_PLTREL24)
6312 stub_rtype = R_PPC_RELAX_PLTREL24;
6313 }
6314
6315 /* Hijack the old relocation. Since we need two
6316 relocations for this use a "composite" reloc. */
6317 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
6318 stub_rtype);
6319 irel->r_offset = trampoff + insn_offset;
6320 if (r_type == R_PPC_PLTREL24
6321 && stub_rtype != R_PPC_RELAX_PLTREL24)
6322 irel->r_addend = 0;
6323
6324 /* Record the fixup so we don't do it again this section. */
6325 f = bfd_malloc (sizeof (*f));
6326 f->next = fixups;
6327 f->tsec = tsec;
6328 f->toff = toff;
6329 f->trampoff = trampoff;
6330 fixups = f;
6331
6332 trampoff += size;
6333 changes++;
6334 }
6335 else
6336 {
6337 val = f->trampoff - roff;
6338 if (val >= max_branch_offset)
6339 continue;
6340
6341 /* Nop out the reloc, since we're finalizing things here. */
6342 irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
6343 }
6344
6345 /* Get the section contents. */
6346 if (contents == NULL)
6347 {
6348 /* Get cached copy if it exists. */
6349 if (elf_section_data (isec)->this_hdr.contents != NULL)
6350 contents = elf_section_data (isec)->this_hdr.contents;
6351 else
6352 {
6353 /* Go get them off disk. */
6354 if (!bfd_malloc_and_get_section (abfd, isec, &contents))
6355 goto error_return;
6356 }
6357 }
6358
6359 /* Fix up the existing branch to hit the trampoline. */
6360 hit_addr = contents + roff;
6361 switch (r_type)
6362 {
6363 case R_PPC_REL24:
6364 case R_PPC_LOCAL24PC:
6365 case R_PPC_PLTREL24:
6366 t0 = bfd_get_32 (abfd, hit_addr);
6367 t0 &= ~0x3fffffc;
6368 t0 |= val & 0x3fffffc;
6369 bfd_put_32 (abfd, t0, hit_addr);
6370 break;
6371
6372 case R_PPC_REL14:
6373 case R_PPC_REL14_BRTAKEN:
6374 case R_PPC_REL14_BRNTAKEN:
6375 t0 = bfd_get_32 (abfd, hit_addr);
6376 t0 &= ~0xfffc;
6377 t0 |= val & 0xfffc;
6378 bfd_put_32 (abfd, t0, hit_addr);
6379 break;
6380 }
6381 }
6382
6383 /* Write out the trampolines. */
6384 if (fixups != NULL)
6385 {
6386 const int *stub;
6387 bfd_byte *dest;
6388 int i, size;
6389
6390 do
6391 {
6392 struct one_fixup *f = fixups;
6393 fixups = fixups->next;
6394 free (f);
6395 }
6396 while (fixups);
6397
6398 contents = bfd_realloc_or_free (contents, trampoff);
6399 if (contents == NULL)
6400 goto error_return;
6401
6402 isec->size = (isec->size + 3) & (bfd_vma) -4;
6403 dest = contents + isec->size;
6404 /* Branch around the trampolines. */
6405 if (maybe_pasted)
6406 {
6407 bfd_vma val = B + trampoff - isec->size;
6408 bfd_put_32 (abfd, val, dest);
6409 dest += 4;
6410 }
6411 isec->size = trampoff;
6412
6413 if (link_info->shared)
6414 {
6415 stub = shared_stub_entry;
6416 size = ARRAY_SIZE (shared_stub_entry);
6417 }
6418 else
6419 {
6420 stub = stub_entry;
6421 size = ARRAY_SIZE (stub_entry);
6422 }
6423
6424 i = 0;
6425 while (dest < contents + trampoff)
6426 {
6427 bfd_put_32 (abfd, stub[i], dest);
6428 i++;
6429 if (i == size)
6430 i = 0;
6431 dest += 4;
6432 }
6433 BFD_ASSERT (i == 0);
6434 }
6435
6436 if (isymbuf != NULL
6437 && symtab_hdr->contents != (unsigned char *) isymbuf)
6438 {
6439 if (! link_info->keep_memory)
6440 free (isymbuf);
6441 else
6442 {
6443 /* Cache the symbols for elf_link_input_bfd. */
6444 symtab_hdr->contents = (unsigned char *) isymbuf;
6445 }
6446 }
6447
6448 if (contents != NULL
6449 && elf_section_data (isec)->this_hdr.contents != contents)
6450 {
6451 if (!changes && !link_info->keep_memory)
6452 free (contents);
6453 else
6454 {
6455 /* Cache the section contents for elf_link_input_bfd. */
6456 elf_section_data (isec)->this_hdr.contents = contents;
6457 }
6458 }
6459
6460 if (changes != 0)
6461 {
6462 /* Append sufficient NOP relocs so we can write out relocation
6463 information for the trampolines. */
6464 Elf_Internal_Shdr *rel_hdr;
6465 Elf_Internal_Rela *new_relocs = bfd_malloc ((changes + isec->reloc_count)
6466 * sizeof (*new_relocs));
6467 unsigned ix;
6468
6469 if (!new_relocs)
6470 goto error_return;
6471 memcpy (new_relocs, internal_relocs,
6472 isec->reloc_count * sizeof (*new_relocs));
6473 for (ix = changes; ix--;)
6474 {
6475 irel = new_relocs + ix + isec->reloc_count;
6476
6477 irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
6478 }
6479 if (internal_relocs != elf_section_data (isec)->relocs)
6480 free (internal_relocs);
6481 elf_section_data (isec)->relocs = new_relocs;
6482 isec->reloc_count += changes;
6483 rel_hdr = _bfd_elf_single_rel_hdr (isec);
6484 rel_hdr->sh_size += changes * rel_hdr->sh_entsize;
6485 }
6486 else if (elf_section_data (isec)->relocs != internal_relocs)
6487 free (internal_relocs);
6488
6489 *again = changes != 0;
6490 if (!*again && link_info->relocatable)
6491 {
6492 /* Convert the internal relax relocs to external form. */
6493 for (irel = internal_relocs; irel < irelend; irel++)
6494 if (ELF32_R_TYPE (irel->r_info) == R_PPC_RELAX)
6495 {
6496 unsigned long r_symndx = ELF32_R_SYM (irel->r_info);
6497
6498 /* Rewrite the reloc and convert one of the trailing nop
6499 relocs to describe this relocation. */
6500 BFD_ASSERT (ELF32_R_TYPE (irelend[-1].r_info) == R_PPC_NONE);
6501 /* The relocs are at the bottom 2 bytes */
6502 irel[0].r_offset += 2;
6503 memmove (irel + 1, irel, (irelend - irel - 1) * sizeof (*irel));
6504 irel[0].r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_HA);
6505 irel[1].r_offset += 4;
6506 irel[1].r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_LO);
6507 irel++;
6508 }
6509 }
6510
6511 return TRUE;
6512
6513 error_return:
6514 if (isymbuf != NULL && (unsigned char *) isymbuf != symtab_hdr->contents)
6515 free (isymbuf);
6516 if (contents != NULL
6517 && elf_section_data (isec)->this_hdr.contents != contents)
6518 free (contents);
6519 if (internal_relocs != NULL
6520 && elf_section_data (isec)->relocs != internal_relocs)
6521 free (internal_relocs);
6522 return FALSE;
6523}
6524\f
6525/* What to do when ld finds relocations against symbols defined in
6526 discarded sections. */
6527
6528static unsigned int
6529ppc_elf_action_discarded (asection *sec)
6530{
6531 if (strcmp (".fixup", sec->name) == 0)
6532 return 0;
6533
6534 if (strcmp (".got2", sec->name) == 0)
6535 return 0;
6536
6537 return _bfd_elf_default_action_discarded (sec);
6538}
6539\f
6540/* Fill in the address for a pointer generated in a linker section. */
6541
6542static bfd_vma
6543elf_finish_pointer_linker_section (bfd *input_bfd,
6544 elf_linker_section_t *lsect,
6545 struct elf_link_hash_entry *h,
6546 bfd_vma relocation,
6547 const Elf_Internal_Rela *rel)
6548{
6549 elf_linker_section_pointers_t *linker_section_ptr;
6550
6551 BFD_ASSERT (lsect != NULL);
6552
6553 if (h != NULL)
6554 {
6555 /* Handle global symbol. */
6556 struct ppc_elf_link_hash_entry *eh;
6557
6558 eh = (struct ppc_elf_link_hash_entry *) h;
6559 BFD_ASSERT (eh->elf.def_regular);
6560 linker_section_ptr = eh->linker_section_pointer;
6561 }
6562 else
6563 {
6564 /* Handle local symbol. */
6565 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
6566
6567 BFD_ASSERT (is_ppc_elf (input_bfd));
6568 BFD_ASSERT (elf_local_ptr_offsets (input_bfd) != NULL);
6569 linker_section_ptr = elf_local_ptr_offsets (input_bfd)[r_symndx];
6570 }
6571
6572 linker_section_ptr = elf_find_pointer_linker_section (linker_section_ptr,
6573 rel->r_addend,
6574 lsect);
6575 BFD_ASSERT (linker_section_ptr != NULL);
6576
6577 /* Offset will always be a multiple of four, so use the bottom bit
6578 as a "written" flag. */
6579 if ((linker_section_ptr->offset & 1) == 0)
6580 {
6581 bfd_put_32 (lsect->section->owner,
6582 relocation + linker_section_ptr->addend,
6583 lsect->section->contents + linker_section_ptr->offset);
6584 linker_section_ptr->offset += 1;
6585 }
6586
6587 relocation = (lsect->section->output_section->vma
6588 + lsect->section->output_offset
6589 + linker_section_ptr->offset - 1
6590 - SYM_VAL (lsect->sym));
6591
6592#ifdef DEBUG
6593 fprintf (stderr,
6594 "Finish pointer in linker section %s, offset = %ld (0x%lx)\n",
6595 lsect->name, (long) relocation, (long) relocation);
6596#endif
6597
6598 return relocation;
6599}
6600
6601#define PPC_LO(v) ((v) & 0xffff)
6602#define PPC_HI(v) (((v) >> 16) & 0xffff)
6603#define PPC_HA(v) PPC_HI ((v) + 0x8000)
6604
6605static void
6606write_glink_stub (struct plt_entry *ent, asection *plt_sec, unsigned char *p,
6607 struct bfd_link_info *info)
6608{
6609 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
6610 bfd *output_bfd = info->output_bfd;
6611 bfd_vma plt;
6612
6613 plt = ((ent->plt.offset & ~1)
6614 + plt_sec->output_section->vma
6615 + plt_sec->output_offset);
6616
6617 if (info->shared)
6618 {
6619 bfd_vma got = 0;
6620
6621 if (ent->addend >= 32768)
6622 got = (ent->addend
6623 + ent->sec->output_section->vma
6624 + ent->sec->output_offset);
6625 else if (htab->elf.hgot != NULL)
6626 got = SYM_VAL (htab->elf.hgot);
6627
6628 plt -= got;
6629
6630 if (plt + 0x8000 < 0x10000)
6631 {
6632 bfd_put_32 (output_bfd, LWZ_11_30 + PPC_LO (plt), p);
6633 p += 4;
6634 bfd_put_32 (output_bfd, MTCTR_11, p);
6635 p += 4;
6636 bfd_put_32 (output_bfd, BCTR, p);
6637 p += 4;
6638 bfd_put_32 (output_bfd, NOP, p);
6639 p += 4;
6640 }
6641 else
6642 {
6643 bfd_put_32 (output_bfd, ADDIS_11_30 + PPC_HA (plt), p);
6644 p += 4;
6645 bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
6646 p += 4;
6647 bfd_put_32 (output_bfd, MTCTR_11, p);
6648 p += 4;
6649 bfd_put_32 (output_bfd, BCTR, p);
6650 p += 4;
6651 }
6652 }
6653 else
6654 {
6655 bfd_put_32 (output_bfd, LIS_11 + PPC_HA (plt), p);
6656 p += 4;
6657 bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
6658 p += 4;
6659 bfd_put_32 (output_bfd, MTCTR_11, p);
6660 p += 4;
6661 bfd_put_32 (output_bfd, BCTR, p);
6662 p += 4;
6663 }
6664}
6665
6666/* Return true if symbol is defined statically. */
6667
6668static bfd_boolean
6669is_static_defined (struct elf_link_hash_entry *h)
6670{
6671 return ((h->root.type == bfd_link_hash_defined
6672 || h->root.type == bfd_link_hash_defweak)
6673 && h->root.u.def.section != NULL
6674 && h->root.u.def.section->output_section != NULL);
6675}
6676
6677/* If INSN is an opcode that may be used with an @tls operand, return
6678 the transformed insn for TLS optimisation, otherwise return 0. If
6679 REG is non-zero only match an insn with RB or RA equal to REG. */
6680
6681unsigned int
6682_bfd_elf_ppc_at_tls_transform (unsigned int insn, unsigned int reg)
6683{
6684 unsigned int rtra;
6685
6686 if ((insn & (0x3f << 26)) != 31 << 26)
6687 return 0;
6688
6689 if (reg == 0 || ((insn >> 11) & 0x1f) == reg)
6690 rtra = insn & ((1 << 26) - (1 << 16));
6691 else if (((insn >> 16) & 0x1f) == reg)
6692 rtra = (insn & (0x1f << 21)) | ((insn & (0x1f << 11)) << 5);
6693 else
6694 return 0;
6695
6696 if ((insn & (0x3ff << 1)) == 266 << 1)
6697 /* add -> addi. */
6698 insn = 14 << 26;
6699 else if ((insn & (0x1f << 1)) == 23 << 1
6700 && ((insn & (0x1f << 6)) < 14 << 6
6701 || ((insn & (0x1f << 6)) >= 16 << 6
6702 && (insn & (0x1f << 6)) < 24 << 6)))
6703 /* load and store indexed -> dform. */
6704 insn = (32 | ((insn >> 6) & 0x1f)) << 26;
6705 else if ((insn & (((0x1a << 5) | 0x1f) << 1)) == 21 << 1)
6706 /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
6707 insn = ((58 | ((insn >> 6) & 4)) << 26) | ((insn >> 6) & 1);
6708 else if ((insn & (((0x1f << 5) | 0x1f) << 1)) == 341 << 1)
6709 /* lwax -> lwa. */
6710 insn = (58 << 26) | 2;
6711 else
6712 return 0;
6713 insn |= rtra;
6714 return insn;
6715}
6716
6717/* If INSN is an opcode that may be used with an @tprel operand, return
6718 the transformed insn for an undefined weak symbol, ie. with the
6719 thread pointer REG operand removed. Otherwise return 0. */
6720
6721unsigned int
6722_bfd_elf_ppc_at_tprel_transform (unsigned int insn, unsigned int reg)
6723{
6724 if ((insn & (0x1f << 16)) == reg << 16
6725 && ((insn & (0x3f << 26)) == 14u << 26 /* addi */
6726 || (insn & (0x3f << 26)) == 15u << 26 /* addis */
6727 || (insn & (0x3f << 26)) == 32u << 26 /* lwz */
6728 || (insn & (0x3f << 26)) == 34u << 26 /* lbz */
6729 || (insn & (0x3f << 26)) == 36u << 26 /* stw */
6730 || (insn & (0x3f << 26)) == 38u << 26 /* stb */
6731 || (insn & (0x3f << 26)) == 40u << 26 /* lhz */
6732 || (insn & (0x3f << 26)) == 42u << 26 /* lha */
6733 || (insn & (0x3f << 26)) == 44u << 26 /* sth */
6734 || (insn & (0x3f << 26)) == 46u << 26 /* lmw */
6735 || (insn & (0x3f << 26)) == 47u << 26 /* stmw */
6736 || (insn & (0x3f << 26)) == 48u << 26 /* lfs */
6737 || (insn & (0x3f << 26)) == 50u << 26 /* lfd */
6738 || (insn & (0x3f << 26)) == 52u << 26 /* stfs */
6739 || (insn & (0x3f << 26)) == 54u << 26 /* stfd */
6740 || ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
6741 && (insn & 3) != 1)
6742 || ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */
6743 && ((insn & 3) == 0 || (insn & 3) == 3))))
6744 {
6745 insn &= ~(0x1f << 16);
6746 }
6747 else if ((insn & (0x1f << 21)) == reg << 21
6748 && ((insn & (0x3e << 26)) == 24u << 26 /* ori, oris */
6749 || (insn & (0x3e << 26)) == 26u << 26 /* xori,xoris */
6750 || (insn & (0x3e << 26)) == 28u << 26 /* andi,andis */))
6751 {
6752 insn &= ~(0x1f << 21);
6753 insn |= (insn & (0x1f << 16)) << 5;
6754 if ((insn & (0x3e << 26)) == 26 << 26 /* xori,xoris */)
6755 insn -= 2 >> 26; /* convert to ori,oris */
6756 }
6757 else
6758 insn = 0;
6759 return insn;
6760}
6761
6762/* The RELOCATE_SECTION function is called by the ELF backend linker
6763 to handle the relocations for a section.
6764
6765 The relocs are always passed as Rela structures; if the section
6766 actually uses Rel structures, the r_addend field will always be
6767 zero.
6768
6769 This function is responsible for adjust the section contents as
6770 necessary, and (if using Rela relocs and generating a
6771 relocatable output file) adjusting the reloc addend as
6772 necessary.
6773
6774 This function does not have to worry about setting the reloc
6775 address or the reloc symbol index.
6776
6777 LOCAL_SYMS is a pointer to the swapped in local symbols.
6778
6779 LOCAL_SECTIONS is an array giving the section in the input file
6780 corresponding to the st_shndx field of each local symbol.
6781
6782 The global hash table entry for the global symbols can be found
6783 via elf_sym_hashes (input_bfd).
6784
6785 When generating relocatable output, this function must handle
6786 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
6787 going to be the section symbol corresponding to the output
6788 section, which means that the addend must be adjusted
6789 accordingly. */
6790
6791static bfd_boolean
6792ppc_elf_relocate_section (bfd *output_bfd,
6793 struct bfd_link_info *info,
6794 bfd *input_bfd,
6795 asection *input_section,
6796 bfd_byte *contents,
6797 Elf_Internal_Rela *relocs,
6798 Elf_Internal_Sym *local_syms,
6799 asection **local_sections)
6800{
6801 Elf_Internal_Shdr *symtab_hdr;
6802 struct elf_link_hash_entry **sym_hashes;
6803 struct ppc_elf_link_hash_table *htab;
6804 Elf_Internal_Rela *rel;
6805 Elf_Internal_Rela *relend;
6806 Elf_Internal_Rela outrel;
6807 asection *got2, *sreloc = NULL;
6808 bfd_vma *local_got_offsets;
6809 bfd_boolean ret = TRUE;
6810 bfd_vma d_offset = (bfd_big_endian (output_bfd) ? 2 : 0);
6811 bfd_boolean is_vxworks_tls;
6812
6813#ifdef DEBUG
6814 _bfd_error_handler ("ppc_elf_relocate_section called for %B section %A, "
6815 "%ld relocations%s",
6816 input_bfd, input_section,
6817 (long) input_section->reloc_count,
6818 (info->relocatable) ? " (relocatable)" : "");
6819#endif
6820
6821 got2 = bfd_get_section_by_name (input_bfd, ".got2");
6822
6823 /* Initialize howto table if not already done. */
6824 if (!ppc_elf_howto_table[R_PPC_ADDR32])
6825 ppc_elf_howto_init ();
6826
6827 htab = ppc_elf_hash_table (info);
6828 local_got_offsets = elf_local_got_offsets (input_bfd);
6829 symtab_hdr = &elf_symtab_hdr (input_bfd);
6830 sym_hashes = elf_sym_hashes (input_bfd);
6831 /* We have to handle relocations in vxworks .tls_vars sections
6832 specially, because the dynamic loader is 'weird'. */
6833 is_vxworks_tls = (htab->is_vxworks && info->shared
6834 && !strcmp (input_section->output_section->name,
6835 ".tls_vars"));
6836 rel = relocs;
6837 relend = relocs + input_section->reloc_count;
6838 for (; rel < relend; rel++)
6839 {
6840 enum elf_ppc_reloc_type r_type;
6841 bfd_vma addend;
6842 bfd_reloc_status_type r;
6843 Elf_Internal_Sym *sym;
6844 asection *sec;
6845 struct elf_link_hash_entry *h;
6846 const char *sym_name;
6847 reloc_howto_type *howto;
6848 unsigned long r_symndx;
6849 bfd_vma relocation;
6850 bfd_vma branch_bit, from;
6851 bfd_boolean unresolved_reloc;
6852 bfd_boolean warned;
6853 unsigned int tls_type, tls_mask, tls_gd;
6854 struct plt_entry **ifunc;
6855
6856 r_type = ELF32_R_TYPE (rel->r_info);
6857 sym = NULL;
6858 sec = NULL;
6859 h = NULL;
6860 unresolved_reloc = FALSE;
6861 warned = FALSE;
6862 r_symndx = ELF32_R_SYM (rel->r_info);
6863
6864 if (r_symndx < symtab_hdr->sh_info)
6865 {
6866 sym = local_syms + r_symndx;
6867 sec = local_sections[r_symndx];
6868 sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
6869
6870 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
6871 }
6872 else
6873 {
6874 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
6875 r_symndx, symtab_hdr, sym_hashes,
6876 h, sec, relocation,
6877 unresolved_reloc, warned);
6878
6879 sym_name = h->root.root.string;
6880 }
6881
6882 if (sec != NULL && elf_discarded_section (sec))
6883 {
6884 /* For relocs against symbols from removed linkonce sections,
6885 or sections discarded by a linker script, we just want the
6886 section contents zeroed. Avoid any special processing. */
6887 howto = NULL;
6888 if (r_type < R_PPC_max)
6889 howto = ppc_elf_howto_table[r_type];
6890 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
6891 rel, relend, howto, contents);
6892 }
6893
6894 if (info->relocatable)
6895 {
6896 if (got2 != NULL
6897 && r_type == R_PPC_PLTREL24
6898 && rel->r_addend >= 32768)
6899 {
6900 /* R_PPC_PLTREL24 is rather special. If non-zero, the
6901 addend specifies the GOT pointer offset within .got2. */
6902 rel->r_addend += got2->output_offset;
6903 }
6904 continue;
6905 }
6906
6907 /* TLS optimizations. Replace instruction sequences and relocs
6908 based on information we collected in tls_optimize. We edit
6909 RELOCS so that --emit-relocs will output something sensible
6910 for the final instruction stream. */
6911 tls_mask = 0;
6912 tls_gd = 0;
6913 if (h != NULL)
6914 tls_mask = ((struct ppc_elf_link_hash_entry *) h)->tls_mask;
6915 else if (local_got_offsets != NULL)
6916 {
6917 struct plt_entry **local_plt;
6918 char *lgot_masks;
6919 local_plt
6920 = (struct plt_entry **) (local_got_offsets + symtab_hdr->sh_info);
6921 lgot_masks = (char *) (local_plt + symtab_hdr->sh_info);
6922 tls_mask = lgot_masks[r_symndx];
6923 }
6924
6925 /* Ensure reloc mapping code below stays sane. */
6926 if ((R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TLSGD16 & 3)
6927 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TLSGD16_LO & 3)
6928 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TLSGD16_HI & 3)
6929 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TLSGD16_HA & 3)
6930 || (R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TPREL16 & 3)
6931 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TPREL16_LO & 3)
6932 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TPREL16_HI & 3)
6933 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TPREL16_HA & 3))
6934 abort ();
6935 switch (r_type)
6936 {
6937 default:
6938 break;
6939
6940 case R_PPC_GOT_TPREL16:
6941 case R_PPC_GOT_TPREL16_LO:
6942 if ((tls_mask & TLS_TLS) != 0
6943 && (tls_mask & TLS_TPREL) == 0)
6944 {
6945 bfd_vma insn;
6946
6947 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset);
6948 insn &= 31 << 21;
6949 insn |= 0x3c020000; /* addis 0,2,0 */
6950 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset);
6951 r_type = R_PPC_TPREL16_HA;
6952 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
6953 }
6954 break;
6955
6956 case R_PPC_TLS:
6957 if ((tls_mask & TLS_TLS) != 0
6958 && (tls_mask & TLS_TPREL) == 0)
6959 {
6960 bfd_vma insn;
6961
6962 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
6963 insn = _bfd_elf_ppc_at_tls_transform (insn, 2);
6964 if (insn == 0)
6965 abort ();
6966 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
6967 r_type = R_PPC_TPREL16_LO;
6968 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
6969
6970 /* Was PPC_TLS which sits on insn boundary, now
6971 PPC_TPREL16_LO which is at low-order half-word. */
6972 rel->r_offset += d_offset;
6973 }
6974 break;
6975
6976 case R_PPC_GOT_TLSGD16_HI:
6977 case R_PPC_GOT_TLSGD16_HA:
6978 tls_gd = TLS_TPRELGD;
6979 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
6980 goto tls_gdld_hi;
6981 break;
6982
6983 case R_PPC_GOT_TLSLD16_HI:
6984 case R_PPC_GOT_TLSLD16_HA:
6985 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
6986 {
6987 tls_gdld_hi:
6988 if ((tls_mask & tls_gd) != 0)
6989 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
6990 + R_PPC_GOT_TPREL16);
6991 else
6992 {
6993 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
6994 rel->r_offset -= d_offset;
6995 r_type = R_PPC_NONE;
6996 }
6997 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
6998 }
6999 break;
7000
7001 case R_PPC_GOT_TLSGD16:
7002 case R_PPC_GOT_TLSGD16_LO:
7003 tls_gd = TLS_TPRELGD;
7004 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
7005 goto tls_ldgd_opt;
7006 break;
7007
7008 case R_PPC_GOT_TLSLD16:
7009 case R_PPC_GOT_TLSLD16_LO:
7010 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
7011 {
7012 unsigned int insn1, insn2;
7013 bfd_vma offset;
7014
7015 tls_ldgd_opt:
7016 offset = (bfd_vma) -1;
7017 /* If not using the newer R_PPC_TLSGD/LD to mark
7018 __tls_get_addr calls, we must trust that the call
7019 stays with its arg setup insns, ie. that the next
7020 reloc is the __tls_get_addr call associated with
7021 the current reloc. Edit both insns. */
7022 if (input_section->has_tls_get_addr_call
7023 && rel + 1 < relend
7024 && branch_reloc_hash_match (input_bfd, rel + 1,
7025 htab->tls_get_addr))
7026 offset = rel[1].r_offset;
7027 if ((tls_mask & tls_gd) != 0)
7028 {
7029 /* IE */
7030 insn1 = bfd_get_32 (output_bfd,
7031 contents + rel->r_offset - d_offset);
7032 insn1 &= (1 << 26) - 1;
7033 insn1 |= 32 << 26; /* lwz */
7034 if (offset != (bfd_vma) -1)
7035 {
7036 rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
7037 insn2 = 0x7c631214; /* add 3,3,2 */
7038 bfd_put_32 (output_bfd, insn2, contents + offset);
7039 }
7040 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
7041 + R_PPC_GOT_TPREL16);
7042 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7043 }
7044 else
7045 {
7046 /* LE */
7047 insn1 = 0x3c620000; /* addis 3,2,0 */
7048 if (tls_gd == 0)
7049 {
7050 /* Was an LD reloc. */
7051 for (r_symndx = 0;
7052 r_symndx < symtab_hdr->sh_info;
7053 r_symndx++)
7054 if (local_sections[r_symndx] == sec)
7055 break;
7056 if (r_symndx >= symtab_hdr->sh_info)
7057 r_symndx = STN_UNDEF;
7058 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
7059 if (r_symndx != STN_UNDEF)
7060 rel->r_addend -= (local_syms[r_symndx].st_value
7061 + sec->output_offset
7062 + sec->output_section->vma);
7063 }
7064 r_type = R_PPC_TPREL16_HA;
7065 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7066 if (offset != (bfd_vma) -1)
7067 {
7068 rel[1].r_info = ELF32_R_INFO (r_symndx, R_PPC_TPREL16_LO);
7069 rel[1].r_offset = offset + d_offset;
7070 rel[1].r_addend = rel->r_addend;
7071 insn2 = 0x38630000; /* addi 3,3,0 */
7072 bfd_put_32 (output_bfd, insn2, contents + offset);
7073 }
7074 }
7075 bfd_put_32 (output_bfd, insn1,
7076 contents + rel->r_offset - d_offset);
7077 if (tls_gd == 0)
7078 {
7079 /* We changed the symbol on an LD reloc. Start over
7080 in order to get h, sym, sec etc. right. */
7081 rel--;
7082 continue;
7083 }
7084 }
7085 break;
7086
7087 case R_PPC_TLSGD:
7088 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
7089 {
7090 unsigned int insn2;
7091 bfd_vma offset = rel->r_offset;
7092
7093 if ((tls_mask & TLS_TPRELGD) != 0)
7094 {
7095 /* IE */
7096 r_type = R_PPC_NONE;
7097 insn2 = 0x7c631214; /* add 3,3,2 */
7098 }
7099 else
7100 {
7101 /* LE */
7102 r_type = R_PPC_TPREL16_LO;
7103 rel->r_offset += d_offset;
7104 insn2 = 0x38630000; /* addi 3,3,0 */
7105 }
7106 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7107 bfd_put_32 (output_bfd, insn2, contents + offset);
7108 /* Zap the reloc on the _tls_get_addr call too. */
7109 BFD_ASSERT (offset == rel[1].r_offset);
7110 rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
7111 }
7112 break;
7113
7114 case R_PPC_TLSLD:
7115 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
7116 {
7117 unsigned int insn2;
7118
7119 for (r_symndx = 0;
7120 r_symndx < symtab_hdr->sh_info;
7121 r_symndx++)
7122 if (local_sections[r_symndx] == sec)
7123 break;
7124 if (r_symndx >= symtab_hdr->sh_info)
7125 r_symndx = STN_UNDEF;
7126 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
7127 if (r_symndx != STN_UNDEF)
7128 rel->r_addend -= (local_syms[r_symndx].st_value
7129 + sec->output_offset
7130 + sec->output_section->vma);
7131
7132 rel->r_info = ELF32_R_INFO (r_symndx, R_PPC_TPREL16_LO);
7133 rel->r_offset += d_offset;
7134 insn2 = 0x38630000; /* addi 3,3,0 */
7135 bfd_put_32 (output_bfd, insn2,
7136 contents + rel->r_offset - d_offset);
7137 /* Zap the reloc on the _tls_get_addr call too. */
7138 BFD_ASSERT (rel->r_offset - d_offset == rel[1].r_offset);
7139 rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
7140 rel--;
7141 continue;
7142 }
7143 break;
7144 }
7145
7146 /* Handle other relocations that tweak non-addend part of insn. */
7147 branch_bit = 0;
7148 switch (r_type)
7149 {
7150 default:
7151 break;
7152
7153 /* Branch taken prediction relocations. */
7154 case R_PPC_ADDR14_BRTAKEN:
7155 case R_PPC_REL14_BRTAKEN:
7156 branch_bit = BRANCH_PREDICT_BIT;
7157 /* Fall thru */
7158
7159 /* Branch not taken prediction relocations. */
7160 case R_PPC_ADDR14_BRNTAKEN:
7161 case R_PPC_REL14_BRNTAKEN:
7162 {
7163 bfd_vma insn;
7164
7165 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
7166 insn &= ~BRANCH_PREDICT_BIT;
7167 insn |= branch_bit;
7168
7169 from = (rel->r_offset
7170 + input_section->output_offset
7171 + input_section->output_section->vma);
7172
7173 /* Invert 'y' bit if not the default. */
7174 if ((bfd_signed_vma) (relocation + rel->r_addend - from) < 0)
7175 insn ^= BRANCH_PREDICT_BIT;
7176
7177 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
7178 break;
7179 }
7180 }
7181
7182 ifunc = NULL;
7183 if (!htab->is_vxworks)
7184 {
7185 struct plt_entry *ent;
7186
7187 if (h != NULL)
7188 {
7189 if (h->type == STT_GNU_IFUNC)
7190 ifunc = &h->plt.plist;
7191 }
7192 else if (local_got_offsets != NULL
7193 && ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
7194 {
7195 struct plt_entry **local_plt;
7196
7197 local_plt = (struct plt_entry **) (local_got_offsets
7198 + symtab_hdr->sh_info);
7199 ifunc = local_plt + r_symndx;
7200 }
7201
7202 ent = NULL;
7203 if (ifunc != NULL
7204 && (!info->shared
7205 || is_branch_reloc (r_type)))
7206 {
7207 addend = 0;
7208 if (r_type == R_PPC_PLTREL24 && info->shared)
7209 addend = rel->r_addend;
7210 ent = find_plt_ent (ifunc, got2, addend);
7211 }
7212 if (ent != NULL)
7213 {
7214 if (h == NULL && (ent->plt.offset & 1) == 0)
7215 {
7216 Elf_Internal_Rela rela;
7217 bfd_byte *loc;
7218
7219 rela.r_offset = (htab->iplt->output_section->vma
7220 + htab->iplt->output_offset
7221 + ent->plt.offset);
7222 rela.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
7223 rela.r_addend = relocation;
7224 loc = htab->reliplt->contents;
7225 loc += (htab->reliplt->reloc_count++
7226 * sizeof (Elf32_External_Rela));
7227 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
7228
7229 ent->plt.offset |= 1;
7230 }
7231 if (h == NULL && (ent->glink_offset & 1) == 0)
7232 {
7233 unsigned char *p = ((unsigned char *) htab->glink->contents
7234 + ent->glink_offset);
7235 write_glink_stub (ent, htab->iplt, p, info);
7236 ent->glink_offset |= 1;
7237 }
7238
7239 unresolved_reloc = FALSE;
7240 if (htab->plt_type == PLT_NEW
7241 || !htab->elf.dynamic_sections_created
7242 || h == NULL)
7243 relocation = (htab->glink->output_section->vma
7244 + htab->glink->output_offset
7245 + (ent->glink_offset & ~1));
7246 else
7247 relocation = (htab->plt->output_section->vma
7248 + htab->plt->output_offset
7249 + ent->plt.offset);
7250 }
7251 }
7252
7253 addend = rel->r_addend;
7254 tls_type = 0;
7255 howto = NULL;
7256 if (r_type < R_PPC_max)
7257 howto = ppc_elf_howto_table[r_type];
7258 switch (r_type)
7259 {
7260 default:
7261 info->callbacks->einfo
7262 (_("%P: %B: unknown relocation type %d for symbol %s\n"),
7263 input_bfd, (int) r_type, sym_name);
7264
7265 bfd_set_error (bfd_error_bad_value);
7266 ret = FALSE;
7267 continue;
7268
7269 case R_PPC_NONE:
7270 case R_PPC_TLS:
7271 case R_PPC_TLSGD:
7272 case R_PPC_TLSLD:
7273 case R_PPC_EMB_MRKREF:
7274 case R_PPC_GNU_VTINHERIT:
7275 case R_PPC_GNU_VTENTRY:
7276 continue;
7277
7278 /* GOT16 relocations. Like an ADDR16 using the symbol's
7279 address in the GOT as relocation value instead of the
7280 symbol's value itself. Also, create a GOT entry for the
7281 symbol and put the symbol value there. */
7282 case R_PPC_GOT_TLSGD16:
7283 case R_PPC_GOT_TLSGD16_LO:
7284 case R_PPC_GOT_TLSGD16_HI:
7285 case R_PPC_GOT_TLSGD16_HA:
7286 tls_type = TLS_TLS | TLS_GD;
7287 goto dogot;
7288
7289 case R_PPC_GOT_TLSLD16:
7290 case R_PPC_GOT_TLSLD16_LO:
7291 case R_PPC_GOT_TLSLD16_HI:
7292 case R_PPC_GOT_TLSLD16_HA:
7293 tls_type = TLS_TLS | TLS_LD;
7294 goto dogot;
7295
7296 case R_PPC_GOT_TPREL16:
7297 case R_PPC_GOT_TPREL16_LO:
7298 case R_PPC_GOT_TPREL16_HI:
7299 case R_PPC_GOT_TPREL16_HA:
7300 tls_type = TLS_TLS | TLS_TPREL;
7301 goto dogot;
7302
7303 case R_PPC_GOT_DTPREL16:
7304 case R_PPC_GOT_DTPREL16_LO:
7305 case R_PPC_GOT_DTPREL16_HI:
7306 case R_PPC_GOT_DTPREL16_HA:
7307 tls_type = TLS_TLS | TLS_DTPREL;
7308 goto dogot;
7309
7310 case R_PPC_GOT16:
7311 case R_PPC_GOT16_LO:
7312 case R_PPC_GOT16_HI:
7313 case R_PPC_GOT16_HA:
7314 tls_mask = 0;
7315 dogot:
7316 {
7317 /* Relocation is to the entry for this symbol in the global
7318 offset table. */
7319 bfd_vma off;
7320 bfd_vma *offp;
7321 unsigned long indx;
7322
7323 if (htab->got == NULL)
7324 abort ();
7325
7326 indx = 0;
7327 if (tls_type == (TLS_TLS | TLS_LD)
7328 && (h == NULL
7329 || !h->def_dynamic))
7330 offp = &htab->tlsld_got.offset;
7331 else if (h != NULL)
7332 {
7333 bfd_boolean dyn;
7334 dyn = htab->elf.dynamic_sections_created;
7335 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
7336 || (info->shared
7337 && SYMBOL_REFERENCES_LOCAL (info, h)))
7338 /* This is actually a static link, or it is a
7339 -Bsymbolic link and the symbol is defined
7340 locally, or the symbol was forced to be local
7341 because of a version file. */
7342 ;
7343 else
7344 {
7345 indx = h->dynindx;
7346 unresolved_reloc = FALSE;
7347 }
7348 offp = &h->got.offset;
7349 }
7350 else
7351 {
7352 if (local_got_offsets == NULL)
7353 abort ();
7354 offp = &local_got_offsets[r_symndx];
7355 }
7356
7357 /* The offset must always be a multiple of 4. We use the
7358 least significant bit to record whether we have already
7359 processed this entry. */
7360 off = *offp;
7361 if ((off & 1) != 0)
7362 off &= ~1;
7363 else
7364 {
7365 unsigned int tls_m = (tls_mask
7366 & (TLS_LD | TLS_GD | TLS_DTPREL
7367 | TLS_TPREL | TLS_TPRELGD));
7368
7369 if (offp == &htab->tlsld_got.offset)
7370 tls_m = TLS_LD;
7371 else if (h == NULL
7372 || !h->def_dynamic)
7373 tls_m &= ~TLS_LD;
7374
7375 /* We might have multiple got entries for this sym.
7376 Initialize them all. */
7377 do
7378 {
7379 int tls_ty = 0;
7380
7381 if ((tls_m & TLS_LD) != 0)
7382 {
7383 tls_ty = TLS_TLS | TLS_LD;
7384 tls_m &= ~TLS_LD;
7385 }
7386 else if ((tls_m & TLS_GD) != 0)
7387 {
7388 tls_ty = TLS_TLS | TLS_GD;
7389 tls_m &= ~TLS_GD;
7390 }
7391 else if ((tls_m & TLS_DTPREL) != 0)
7392 {
7393 tls_ty = TLS_TLS | TLS_DTPREL;
7394 tls_m &= ~TLS_DTPREL;
7395 }
7396 else if ((tls_m & (TLS_TPREL | TLS_TPRELGD)) != 0)
7397 {
7398 tls_ty = TLS_TLS | TLS_TPREL;
7399 tls_m = 0;
7400 }
7401
7402 /* Generate relocs for the dynamic linker. */
7403 if ((info->shared || indx != 0)
7404 && (offp == &htab->tlsld_got.offset
7405 || h == NULL
7406 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
7407 || h->root.type != bfd_link_hash_undefweak))
7408 {
7409 asection *rsec = htab->relgot;
7410 bfd_byte * loc;
7411
7412 outrel.r_offset = (htab->got->output_section->vma
7413 + htab->got->output_offset
7414 + off);
7415 outrel.r_addend = 0;
7416 if (tls_ty & (TLS_LD | TLS_GD))
7417 {
7418 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPMOD32);
7419 if (tls_ty == (TLS_TLS | TLS_GD))
7420 {
7421 loc = rsec->contents;
7422 loc += (rsec->reloc_count++
7423 * sizeof (Elf32_External_Rela));
7424 bfd_elf32_swap_reloca_out (output_bfd,
7425 &outrel, loc);
7426 outrel.r_offset += 4;
7427 outrel.r_info
7428 = ELF32_R_INFO (indx, R_PPC_DTPREL32);
7429 }
7430 }
7431 else if (tls_ty == (TLS_TLS | TLS_DTPREL))
7432 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPREL32);
7433 else if (tls_ty == (TLS_TLS | TLS_TPREL))
7434 outrel.r_info = ELF32_R_INFO (indx, R_PPC_TPREL32);
7435 else if (indx != 0)
7436 outrel.r_info = ELF32_R_INFO (indx, R_PPC_GLOB_DAT);
7437 else if (ifunc != NULL)
7438 outrel.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
7439 else
7440 outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
7441 if (indx == 0 && tls_ty != (TLS_TLS | TLS_LD))
7442 {
7443 outrel.r_addend += relocation;
7444 if (tls_ty & (TLS_GD | TLS_DTPREL | TLS_TPREL))
7445 outrel.r_addend -= htab->elf.tls_sec->vma;
7446 }
7447 loc = rsec->contents;
7448 loc += (rsec->reloc_count++
7449 * sizeof (Elf32_External_Rela));
7450 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
7451 }
7452
7453 /* Init the .got section contents if we're not
7454 emitting a reloc. */
7455 else
7456 {
7457 bfd_vma value = relocation;
7458
7459 if (tls_ty == (TLS_TLS | TLS_LD))
7460 value = 1;
7461 else if (tls_ty != 0)
7462 {
7463 value -= htab->elf.tls_sec->vma + DTP_OFFSET;
7464 if (tls_ty == (TLS_TLS | TLS_TPREL))
7465 value += DTP_OFFSET - TP_OFFSET;
7466
7467 if (tls_ty == (TLS_TLS | TLS_GD))
7468 {
7469 bfd_put_32 (output_bfd, value,
7470 htab->got->contents + off + 4);
7471 value = 1;
7472 }
7473 }
7474 bfd_put_32 (output_bfd, value,
7475 htab->got->contents + off);
7476 }
7477
7478 off += 4;
7479 if (tls_ty & (TLS_LD | TLS_GD))
7480 off += 4;
7481 }
7482 while (tls_m != 0);
7483
7484 off = *offp;
7485 *offp = off | 1;
7486 }
7487
7488 if (off >= (bfd_vma) -2)
7489 abort ();
7490
7491 if ((tls_type & TLS_TLS) != 0)
7492 {
7493 if (tls_type != (TLS_TLS | TLS_LD))
7494 {
7495 if ((tls_mask & TLS_LD) != 0
7496 && !(h == NULL
7497 || !h->def_dynamic))
7498 off += 8;
7499 if (tls_type != (TLS_TLS | TLS_GD))
7500 {
7501 if ((tls_mask & TLS_GD) != 0)
7502 off += 8;
7503 if (tls_type != (TLS_TLS | TLS_DTPREL))
7504 {
7505 if ((tls_mask & TLS_DTPREL) != 0)
7506 off += 4;
7507 }
7508 }
7509 }
7510 }
7511
7512 relocation = (htab->got->output_section->vma
7513 + htab->got->output_offset
7514 + off
7515 - SYM_VAL (htab->elf.hgot));
7516
7517 /* Addends on got relocations don't make much sense.
7518 x+off@got is actually x@got+off, and since the got is
7519 generated by a hash table traversal, the value in the
7520 got at entry m+n bears little relation to the entry m. */
7521 if (addend != 0)
7522 info->callbacks->einfo
7523 (_("%P: %H: non-zero addend on %s reloc against `%s'\n"),
7524 input_bfd, input_section, rel->r_offset,
7525 howto->name,
7526 sym_name);
7527 }
7528 break;
7529
7530 /* Relocations that need no special processing. */
7531 case R_PPC_LOCAL24PC:
7532 /* It makes no sense to point a local relocation
7533 at a symbol not in this object. */
7534 if (unresolved_reloc)
7535 {
7536 if (! (*info->callbacks->undefined_symbol) (info,
7537 h->root.root.string,
7538 input_bfd,
7539 input_section,
7540 rel->r_offset,
7541 TRUE))
7542 return FALSE;
7543 continue;
7544 }
7545 break;
7546
7547 case R_PPC_DTPREL16:
7548 case R_PPC_DTPREL16_LO:
7549 case R_PPC_DTPREL16_HI:
7550 case R_PPC_DTPREL16_HA:
7551 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
7552 break;
7553
7554 /* Relocations that may need to be propagated if this is a shared
7555 object. */
7556 case R_PPC_TPREL16:
7557 case R_PPC_TPREL16_LO:
7558 case R_PPC_TPREL16_HI:
7559 case R_PPC_TPREL16_HA:
7560 if (h != NULL
7561 && h->root.type == bfd_link_hash_undefweak
7562 && h->dynindx == -1)
7563 {
7564 /* Make this relocation against an undefined weak symbol
7565 resolve to zero. This is really just a tweak, since
7566 code using weak externs ought to check that they are
7567 defined before using them. */
7568 bfd_byte *p = contents + rel->r_offset - d_offset;
7569 unsigned int insn = bfd_get_32 (output_bfd, p);
7570 insn = _bfd_elf_ppc_at_tprel_transform (insn, 2);
7571 if (insn != 0)
7572 bfd_put_32 (output_bfd, insn, p);
7573 break;
7574 }
7575 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
7576 /* The TPREL16 relocs shouldn't really be used in shared
7577 libs as they will result in DT_TEXTREL being set, but
7578 support them anyway. */
7579 goto dodyn;
7580
7581 case R_PPC_TPREL32:
7582 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
7583 goto dodyn;
7584
7585 case R_PPC_DTPREL32:
7586 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
7587 goto dodyn;
7588
7589 case R_PPC_DTPMOD32:
7590 relocation = 1;
7591 addend = 0;
7592 goto dodyn;
7593
7594 case R_PPC_REL16:
7595 case R_PPC_REL16_LO:
7596 case R_PPC_REL16_HI:
7597 case R_PPC_REL16_HA:
7598 break;
7599
7600 case R_PPC_REL32:
7601 if (h == NULL || h == htab->elf.hgot)
7602 break;
7603 /* fall through */
7604
7605 case R_PPC_ADDR32:
7606 case R_PPC_ADDR16:
7607 case R_PPC_ADDR16_LO:
7608 case R_PPC_ADDR16_HI:
7609 case R_PPC_ADDR16_HA:
7610 case R_PPC_UADDR32:
7611 case R_PPC_UADDR16:
7612 goto dodyn;
7613
7614 case R_PPC_REL24:
7615 case R_PPC_REL14:
7616 case R_PPC_REL14_BRTAKEN:
7617 case R_PPC_REL14_BRNTAKEN:
7618 /* If these relocations are not to a named symbol, they can be
7619 handled right here, no need to bother the dynamic linker. */
7620 if (SYMBOL_CALLS_LOCAL (info, h)
7621 || h == htab->elf.hgot)
7622 break;
7623 /* fall through */
7624
7625 case R_PPC_ADDR24:
7626 case R_PPC_ADDR14:
7627 case R_PPC_ADDR14_BRTAKEN:
7628 case R_PPC_ADDR14_BRNTAKEN:
7629 if (h != NULL && !info->shared)
7630 break;
7631 /* fall through */
7632
7633 dodyn:
7634 if ((input_section->flags & SEC_ALLOC) == 0
7635 || is_vxworks_tls)
7636 break;
7637
7638 if ((info->shared
7639 && !(h != NULL
7640 && ((h->root.type == bfd_link_hash_undefined
7641 && (ELF_ST_VISIBILITY (h->other) == STV_HIDDEN
7642 || ELF_ST_VISIBILITY (h->other) == STV_INTERNAL))
7643 || (h->root.type == bfd_link_hash_undefweak
7644 && ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)))
7645 && (must_be_dyn_reloc (info, r_type)
7646 || !SYMBOL_CALLS_LOCAL (info, h)))
7647 || (ELIMINATE_COPY_RELOCS
7648 && !info->shared
7649 && h != NULL
7650 && h->dynindx != -1
7651 && !h->non_got_ref
7652 && !h->def_regular))
7653 {
7654 int skip;
7655 bfd_byte * loc;
7656#ifdef DEBUG
7657 fprintf (stderr, "ppc_elf_relocate_section needs to "
7658 "create relocation for %s\n",
7659 (h && h->root.root.string
7660 ? h->root.root.string : "<unknown>"));
7661#endif
7662
7663 /* When generating a shared object, these relocations
7664 are copied into the output file to be resolved at run
7665 time. */
7666 if (sreloc == NULL)
7667 {
7668 sreloc = elf_section_data (input_section)->sreloc;
7669 if (!htab->elf.dynamic_sections_created)
7670 sreloc = htab->reliplt;
7671 if (sreloc == NULL)
7672 return FALSE;
7673 }
7674
7675 skip = 0;
7676 outrel.r_offset = _bfd_elf_section_offset (output_bfd, info,
7677 input_section,
7678 rel->r_offset);
7679 if (outrel.r_offset == (bfd_vma) -1
7680 || outrel.r_offset == (bfd_vma) -2)
7681 skip = (int) outrel.r_offset;
7682 outrel.r_offset += (input_section->output_section->vma
7683 + input_section->output_offset);
7684
7685 if (skip)
7686 memset (&outrel, 0, sizeof outrel);
7687 else if ((h != NULL
7688 && (h->root.type == bfd_link_hash_undefined
7689 || h->root.type == bfd_link_hash_undefweak))
7690 || !SYMBOL_REFERENCES_LOCAL (info, h))
7691 {
7692 unresolved_reloc = FALSE;
7693 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
7694 outrel.r_addend = rel->r_addend;
7695 }
7696 else
7697 {
7698 outrel.r_addend = relocation + rel->r_addend;
7699
7700 if (r_type != R_PPC_ADDR32)
7701 {
7702 long indx = 0;
7703
7704 if (ifunc != NULL)
7705 {
7706 /* If we get here when building a static
7707 executable, then the libc startup function
7708 responsible for applying indirect function
7709 relocations is going to complain about
7710 the reloc type.
7711 If we get here when building a dynamic
7712 executable, it will be because we have
7713 a text relocation. The dynamic loader
7714 will set the text segment writable and
7715 non-executable to apply text relocations.
7716 So we'll segfault when trying to run the
7717 indirection function to resolve the reloc. */
7718 info->callbacks->einfo
7719 (_("%P: %H: relocation %s for indirect "
7720 "function %s unsupported\n"),
7721 input_bfd, input_section, rel->r_offset,
7722 howto->name,
7723 sym_name);
7724 ret = FALSE;
7725 }
7726 else if (r_symndx == STN_UNDEF || bfd_is_abs_section (sec))
7727 ;
7728 else if (sec == NULL || sec->owner == NULL)
7729 {
7730 bfd_set_error (bfd_error_bad_value);
7731 ret = FALSE;
7732 }
7733 else
7734 {
7735 asection *osec;
7736
7737 /* We are turning this relocation into one
7738 against a section symbol. It would be
7739 proper to subtract the symbol's value,
7740 osec->vma, from the emitted reloc addend,
7741 but ld.so expects buggy relocs.
7742 FIXME: Why not always use a zero index? */
7743 osec = sec->output_section;
7744 indx = elf_section_data (osec)->dynindx;
7745 if (indx == 0)
7746 {
7747 osec = htab->elf.text_index_section;
7748 indx = elf_section_data (osec)->dynindx;
7749 }
7750 BFD_ASSERT (indx != 0);
7751#ifdef DEBUG
7752 if (indx == 0)
7753 printf ("indx=%ld section=%s flags=%08x name=%s\n",
7754 indx, osec->name, osec->flags,
7755 h->root.root.string);
7756#endif
7757 }
7758
7759 outrel.r_info = ELF32_R_INFO (indx, r_type);
7760 }
7761 else if (ifunc != NULL)
7762 outrel.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
7763 else
7764 outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
7765 }
7766
7767 loc = sreloc->contents;
7768 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
7769 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
7770
7771 if (skip == -1)
7772 continue;
7773
7774 /* This reloc will be computed at runtime. We clear the memory
7775 so that it contains predictable value. */
7776 if (! skip
7777 && ((input_section->flags & SEC_ALLOC) != 0
7778 || ELF32_R_TYPE (outrel.r_info) != R_PPC_RELATIVE))
7779 {
7780 relocation = howto->pc_relative ? outrel.r_offset : 0;
7781 addend = 0;
7782 break;
7783 }
7784 }
7785 break;
7786
7787 case R_PPC_RELAX_PLT:
7788 case R_PPC_RELAX_PLTREL24:
7789 if (h != NULL)
7790 {
7791 struct plt_entry *ent;
7792 bfd_vma got2_addend = 0;
7793
7794 if (r_type == R_PPC_RELAX_PLTREL24)
7795 {
7796 if (info->shared)
7797 got2_addend = addend;
7798 addend = 0;
7799 }
7800 ent = find_plt_ent (&h->plt.plist, got2, got2_addend);
7801 if (htab->plt_type == PLT_NEW)
7802 relocation = (htab->glink->output_section->vma
7803 + htab->glink->output_offset
7804 + ent->glink_offset);
7805 else
7806 relocation = (htab->plt->output_section->vma
7807 + htab->plt->output_offset
7808 + ent->plt.offset);
7809 }
7810 /* Fall thru */
7811
7812 case R_PPC_RELAX:
7813 if (info->shared)
7814 relocation -= (input_section->output_section->vma
7815 + input_section->output_offset
7816 + rel->r_offset - 4);
7817
7818 {
7819 unsigned long t0;
7820 unsigned long t1;
7821
7822 t0 = bfd_get_32 (output_bfd, contents + rel->r_offset);
7823 t1 = bfd_get_32 (output_bfd, contents + rel->r_offset + 4);
7824
7825 /* We're clearing the bits for R_PPC_ADDR16_HA
7826 and R_PPC_ADDR16_LO here. */
7827 t0 &= ~0xffff;
7828 t1 &= ~0xffff;
7829
7830 /* t0 is HA, t1 is LO */
7831 relocation += addend;
7832 t0 |= ((relocation + 0x8000) >> 16) & 0xffff;
7833 t1 |= relocation & 0xffff;
7834
7835 bfd_put_32 (output_bfd, t0, contents + rel->r_offset);
7836 bfd_put_32 (output_bfd, t1, contents + rel->r_offset + 4);
7837
7838 /* Rewrite the reloc and convert one of the trailing nop
7839 relocs to describe this relocation. */
7840 BFD_ASSERT (ELF32_R_TYPE (relend[-1].r_info) == R_PPC_NONE);
7841 /* The relocs are at the bottom 2 bytes */
7842 rel[0].r_offset += 2;
7843 memmove (rel + 1, rel, (relend - rel - 1) * sizeof (*rel));
7844 rel[0].r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_HA);
7845 rel[1].r_offset += 4;
7846 rel[1].r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_LO);
7847 rel++;
7848 }
7849 continue;
7850
7851 /* Indirect .sdata relocation. */
7852 case R_PPC_EMB_SDAI16:
7853 BFD_ASSERT (htab->sdata[0].section != NULL);
7854 if (!is_static_defined (htab->sdata[0].sym))
7855 {
7856 unresolved_reloc = TRUE;
7857 break;
7858 }
7859 relocation
7860 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[0],
7861 h, relocation, rel);
7862 addend = 0;
7863 break;
7864
7865 /* Indirect .sdata2 relocation. */
7866 case R_PPC_EMB_SDA2I16:
7867 BFD_ASSERT (htab->sdata[1].section != NULL);
7868 if (!is_static_defined (htab->sdata[1].sym))
7869 {
7870 unresolved_reloc = TRUE;
7871 break;
7872 }
7873 relocation
7874 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[1],
7875 h, relocation, rel);
7876 addend = 0;
7877 break;
7878
7879 /* Handle the TOC16 reloc. We want to use the offset within the .got
7880 section, not the actual VMA. This is appropriate when generating
7881 an embedded ELF object, for which the .got section acts like the
7882 AIX .toc section. */
7883 case R_PPC_TOC16: /* phony GOT16 relocations */
7884 if (sec == NULL || sec->output_section == NULL)
7885 {
7886 unresolved_reloc = TRUE;
7887 break;
7888 }
7889 BFD_ASSERT (strcmp (bfd_get_section_name (abfd, sec), ".got") == 0
7890 || strcmp (bfd_get_section_name (abfd, sec), ".cgot") == 0);
7891
7892 addend -= sec->output_section->vma + sec->output_offset + 0x8000;
7893 break;
7894
7895 case R_PPC_PLTREL24:
7896 if (h == NULL || ifunc != NULL)
7897 break;
7898 /* Relocation is to the entry for this symbol in the
7899 procedure linkage table. */
7900 {
7901 struct plt_entry *ent = find_plt_ent (&h->plt.plist, got2,
7902 info->shared ? addend : 0);
7903 addend = 0;
7904 if (ent == NULL
7905 || htab->plt == NULL)
7906 {
7907 /* We didn't make a PLT entry for this symbol. This
7908 happens when statically linking PIC code, or when
7909 using -Bsymbolic. */
7910 break;
7911 }
7912
7913 unresolved_reloc = FALSE;
7914 if (htab->plt_type == PLT_NEW)
7915 relocation = (htab->glink->output_section->vma
7916 + htab->glink->output_offset
7917 + ent->glink_offset);
7918 else
7919 relocation = (htab->plt->output_section->vma
7920 + htab->plt->output_offset
7921 + ent->plt.offset);
7922 }
7923 break;
7924
7925 /* Relocate against _SDA_BASE_. */
7926 case R_PPC_SDAREL16:
7927 {
7928 const char *name;
7929 struct elf_link_hash_entry *sda = htab->sdata[0].sym;
7930
7931 if (sec == NULL
7932 || sec->output_section == NULL
7933 || !is_static_defined (sda))
7934 {
7935 unresolved_reloc = TRUE;
7936 break;
7937 }
7938 addend -= SYM_VAL (sda);
7939
7940 name = bfd_get_section_name (abfd, sec->output_section);
7941 if (! ((CONST_STRNEQ (name, ".sdata")
7942 && (name[6] == 0 || name[6] == '.'))
7943 || (CONST_STRNEQ (name, ".sbss")
7944 && (name[5] == 0 || name[5] == '.'))))
7945 {
7946 info->callbacks->einfo
7947 (_("%P: %B: the target (%s) of a %s relocation is "
7948 "in the wrong output section (%s)\n"),
7949 input_bfd,
7950 sym_name,
7951 howto->name,
7952 name);
7953 }
7954 }
7955 break;
7956
7957 /* Relocate against _SDA2_BASE_. */
7958 case R_PPC_EMB_SDA2REL:
7959 {
7960 const char *name;
7961 struct elf_link_hash_entry *sda = htab->sdata[1].sym;
7962
7963 if (sec == NULL
7964 || sec->output_section == NULL
7965 || !is_static_defined (sda))
7966 {
7967 unresolved_reloc = TRUE;
7968 break;
7969 }
7970 addend -= SYM_VAL (sda);
7971
7972 name = bfd_get_section_name (abfd, sec->output_section);
7973 if (! (CONST_STRNEQ (name, ".sdata2")
7974 || CONST_STRNEQ (name, ".sbss2")))
7975 {
7976 info->callbacks->einfo
7977 (_("%P: %B: the target (%s) of a %s relocation is "
7978 "in the wrong output section (%s)\n"),
7979 input_bfd,
7980 sym_name,
7981 howto->name,
7982 name);
7983 }
7984 }
7985 break;
7986
7987 /* Relocate against either _SDA_BASE_, _SDA2_BASE_, or 0. */
7988 case R_PPC_EMB_SDA21:
7989 case R_PPC_EMB_RELSDA:
7990 {
7991 const char *name;
7992 int reg;
7993 struct elf_link_hash_entry *sda = NULL;
7994
7995 if (sec == NULL || sec->output_section == NULL)
7996 {
7997 unresolved_reloc = TRUE;
7998 break;
7999 }
8000
8001 name = bfd_get_section_name (abfd, sec->output_section);
8002 if (((CONST_STRNEQ (name, ".sdata")
8003 && (name[6] == 0 || name[6] == '.'))
8004 || (CONST_STRNEQ (name, ".sbss")
8005 && (name[5] == 0 || name[5] == '.'))))
8006 {
8007 reg = 13;
8008 sda = htab->sdata[0].sym;
8009 }
8010 else if (CONST_STRNEQ (name, ".sdata2")
8011 || CONST_STRNEQ (name, ".sbss2"))
8012 {
8013 reg = 2;
8014 sda = htab->sdata[1].sym;
8015 }
8016 else if (strcmp (name, ".PPC.EMB.sdata0") == 0
8017 || strcmp (name, ".PPC.EMB.sbss0") == 0)
8018 {
8019 reg = 0;
8020 }
8021 else
8022 {
8023 info->callbacks->einfo
8024 (_("%P: %B: the target (%s) of a %s relocation is "
8025 "in the wrong output section (%s)\n"),
8026 input_bfd,
8027 sym_name,
8028 howto->name,
8029 name);
8030
8031 bfd_set_error (bfd_error_bad_value);
8032 ret = FALSE;
8033 continue;
8034 }
8035
8036 if (sda != NULL)
8037 {
8038 if (!is_static_defined (sda))
8039 {
8040 unresolved_reloc = TRUE;
8041 break;
8042 }
8043 addend -= SYM_VAL (sda);
8044 }
8045
8046 if (r_type == R_PPC_EMB_SDA21)
8047 {
8048 bfd_vma insn; /* Fill in register field. */
8049
8050 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
8051 insn = (insn & ~RA_REGISTER_MASK) | (reg << RA_REGISTER_SHIFT);
8052 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
8053 }
8054 }
8055 break;
8056
8057 /* Relocate against the beginning of the section. */
8058 case R_PPC_SECTOFF:
8059 case R_PPC_SECTOFF_LO:
8060 case R_PPC_SECTOFF_HI:
8061 case R_PPC_SECTOFF_HA:
8062 if (sec == NULL || sec->output_section == NULL)
8063 {
8064 unresolved_reloc = TRUE;
8065 break;
8066 }
8067 addend -= sec->output_section->vma;
8068 break;
8069
8070 /* Negative relocations. */
8071 case R_PPC_EMB_NADDR32:
8072 case R_PPC_EMB_NADDR16:
8073 case R_PPC_EMB_NADDR16_LO:
8074 case R_PPC_EMB_NADDR16_HI:
8075 case R_PPC_EMB_NADDR16_HA:
8076 addend -= 2 * relocation;
8077 break;
8078
8079 case R_PPC_COPY:
8080 case R_PPC_GLOB_DAT:
8081 case R_PPC_JMP_SLOT:
8082 case R_PPC_RELATIVE:
8083 case R_PPC_IRELATIVE:
8084 case R_PPC_PLT32:
8085 case R_PPC_PLTREL32:
8086 case R_PPC_PLT16_LO:
8087 case R_PPC_PLT16_HI:
8088 case R_PPC_PLT16_HA:
8089 case R_PPC_ADDR30:
8090 case R_PPC_EMB_RELSEC16:
8091 case R_PPC_EMB_RELST_LO:
8092 case R_PPC_EMB_RELST_HI:
8093 case R_PPC_EMB_RELST_HA:
8094 case R_PPC_EMB_BIT_FLD:
8095 info->callbacks->einfo
8096 (_("%P: %B: relocation %s is not yet supported for symbol %s\n"),
8097 input_bfd,
8098 howto->name,
8099 sym_name);
8100
8101 bfd_set_error (bfd_error_invalid_operation);
8102 ret = FALSE;
8103 continue;
8104 }
8105
8106 /* Do any further special processing. */
8107 switch (r_type)
8108 {
8109 default:
8110 break;
8111
8112 case R_PPC_ADDR16_HA:
8113 case R_PPC_REL16_HA:
8114 case R_PPC_SECTOFF_HA:
8115 case R_PPC_TPREL16_HA:
8116 case R_PPC_DTPREL16_HA:
8117 case R_PPC_EMB_NADDR16_HA:
8118 case R_PPC_EMB_RELST_HA:
8119 /* It's just possible that this symbol is a weak symbol
8120 that's not actually defined anywhere. In that case,
8121 'sec' would be NULL, and we should leave the symbol
8122 alone (it will be set to zero elsewhere in the link). */
8123 if (sec == NULL)
8124 break;
8125 /* Fall thru */
8126
8127 case R_PPC_PLT16_HA:
8128 case R_PPC_GOT16_HA:
8129 case R_PPC_GOT_TLSGD16_HA:
8130 case R_PPC_GOT_TLSLD16_HA:
8131 case R_PPC_GOT_TPREL16_HA:
8132 case R_PPC_GOT_DTPREL16_HA:
8133 /* Add 0x10000 if sign bit in 0:15 is set.
8134 Bits 0:15 are not used. */
8135 addend += 0x8000;
8136 break;
8137 }
8138
8139#ifdef DEBUG
8140 fprintf (stderr, "\ttype = %s (%d), name = %s, symbol index = %ld, "
8141 "offset = %ld, addend = %ld\n",
8142 howto->name,
8143 (int) r_type,
8144 sym_name,
8145 r_symndx,
8146 (long) rel->r_offset,
8147 (long) addend);
8148#endif
8149
8150 if (unresolved_reloc
8151 && !((input_section->flags & SEC_DEBUGGING) != 0
8152 && h->def_dynamic)
8153 && _bfd_elf_section_offset (output_bfd, info, input_section,
8154 rel->r_offset) != (bfd_vma) -1)
8155 {
8156 info->callbacks->einfo
8157 (_("%P: %H: unresolvable %s relocation against symbol `%s'\n"),
8158 input_bfd, input_section, rel->r_offset,
8159 howto->name,
8160 sym_name);
8161 ret = FALSE;
8162 }
8163
8164 r = _bfd_final_link_relocate (howto,
8165 input_bfd,
8166 input_section,
8167 contents,
8168 rel->r_offset,
8169 relocation,
8170 addend);
8171
8172 if (r != bfd_reloc_ok)
8173 {
8174 if (r == bfd_reloc_overflow)
8175 {
8176 if (warned)
8177 continue;
8178 if (h != NULL
8179 && h->root.type == bfd_link_hash_undefweak
8180 && howto->pc_relative)
8181 {
8182 /* Assume this is a call protected by other code that
8183 detect the symbol is undefined. If this is the case,
8184 we can safely ignore the overflow. If not, the
8185 program is hosed anyway, and a little warning isn't
8186 going to help. */
8187
8188 continue;
8189 }
8190
8191 if (! (*info->callbacks->reloc_overflow) (info,
8192 (h ? &h->root : NULL),
8193 sym_name,
8194 howto->name,
8195 rel->r_addend,
8196 input_bfd,
8197 input_section,
8198 rel->r_offset))
8199 return FALSE;
8200 }
8201 else
8202 {
8203 info->callbacks->einfo
8204 (_("%P: %H: %s reloc against `%s': error %d\n"),
8205 input_bfd, input_section, rel->r_offset,
8206 howto->name, sym_name, (int) r);
8207 ret = FALSE;
8208 }
8209 }
8210 }
8211
8212#ifdef DEBUG
8213 fprintf (stderr, "\n");
8214#endif
8215
8216 return ret;
8217}
8218\f
8219/* Finish up dynamic symbol handling. We set the contents of various
8220 dynamic sections here. */
8221
8222static bfd_boolean
8223ppc_elf_finish_dynamic_symbol (bfd *output_bfd,
8224 struct bfd_link_info *info,
8225 struct elf_link_hash_entry *h,
8226 Elf_Internal_Sym *sym)
8227{
8228 struct ppc_elf_link_hash_table *htab;
8229 struct plt_entry *ent;
8230 bfd_boolean doneone;
8231
8232#ifdef DEBUG
8233 fprintf (stderr, "ppc_elf_finish_dynamic_symbol called for %s",
8234 h->root.root.string);
8235#endif
8236
8237 htab = ppc_elf_hash_table (info);
8238 BFD_ASSERT (htab->elf.dynobj != NULL);
8239
8240 doneone = FALSE;
8241 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
8242 if (ent->plt.offset != (bfd_vma) -1)
8243 {
8244 if (!doneone)
8245 {
8246 Elf_Internal_Rela rela;
8247 bfd_byte *loc;
8248 bfd_vma reloc_index;
8249
8250 if (htab->plt_type == PLT_NEW
8251 || !htab->elf.dynamic_sections_created
8252 || h->dynindx == -1)
8253 reloc_index = ent->plt.offset / 4;
8254 else
8255 {
8256 reloc_index = ((ent->plt.offset - htab->plt_initial_entry_size)
8257 / htab->plt_slot_size);
8258 if (reloc_index > PLT_NUM_SINGLE_ENTRIES
8259 && htab->plt_type == PLT_OLD)
8260 reloc_index -= (reloc_index - PLT_NUM_SINGLE_ENTRIES) / 2;
8261 }
8262
8263 /* This symbol has an entry in the procedure linkage table.
8264 Set it up. */
8265 if (htab->plt_type == PLT_VXWORKS
8266 && htab->elf.dynamic_sections_created
8267 && h->dynindx != -1)
8268 {
8269 bfd_vma got_offset;
8270 const bfd_vma *plt_entry;
8271
8272 /* The first three entries in .got.plt are reserved. */
8273 got_offset = (reloc_index + 3) * 4;
8274
8275 /* Use the right PLT. */
8276 plt_entry = info->shared ? ppc_elf_vxworks_pic_plt_entry
8277 : ppc_elf_vxworks_plt_entry;
8278
8279 /* Fill in the .plt on VxWorks. */
8280 if (info->shared)
8281 {
8282 bfd_put_32 (output_bfd,
8283 plt_entry[0] | PPC_HA (got_offset),
8284 htab->plt->contents + ent->plt.offset + 0);
8285 bfd_put_32 (output_bfd,
8286 plt_entry[1] | PPC_LO (got_offset),
8287 htab->plt->contents + ent->plt.offset + 4);
8288 }
8289 else
8290 {
8291 bfd_vma got_loc = got_offset + SYM_VAL (htab->elf.hgot);
8292
8293 bfd_put_32 (output_bfd,
8294 plt_entry[0] | PPC_HA (got_loc),
8295 htab->plt->contents + ent->plt.offset + 0);
8296 bfd_put_32 (output_bfd,
8297 plt_entry[1] | PPC_LO (got_loc),
8298 htab->plt->contents + ent->plt.offset + 4);
8299 }
8300
8301 bfd_put_32 (output_bfd, plt_entry[2],
8302 htab->plt->contents + ent->plt.offset + 8);
8303 bfd_put_32 (output_bfd, plt_entry[3],
8304 htab->plt->contents + ent->plt.offset + 12);
8305
8306 /* This instruction is an immediate load. The value loaded is
8307 the byte offset of the R_PPC_JMP_SLOT relocation from the
8308 start of the .rela.plt section. The value is stored in the
8309 low-order 16 bits of the load instruction. */
8310 /* NOTE: It appears that this is now an index rather than a
8311 prescaled offset. */
8312 bfd_put_32 (output_bfd,
8313 plt_entry[4] | reloc_index,
8314 htab->plt->contents + ent->plt.offset + 16);
8315 /* This instruction is a PC-relative branch whose target is
8316 the start of the PLT section. The address of this branch
8317 instruction is 20 bytes beyond the start of this PLT entry.
8318 The address is encoded in bits 6-29, inclusive. The value
8319 stored is right-shifted by two bits, permitting a 26-bit
8320 offset. */
8321 bfd_put_32 (output_bfd,
8322 (plt_entry[5]
8323 | (-(ent->plt.offset + 20) & 0x03fffffc)),
8324 htab->plt->contents + ent->plt.offset + 20);
8325 bfd_put_32 (output_bfd, plt_entry[6],
8326 htab->plt->contents + ent->plt.offset + 24);
8327 bfd_put_32 (output_bfd, plt_entry[7],
8328 htab->plt->contents + ent->plt.offset + 28);
8329
8330 /* Fill in the GOT entry corresponding to this PLT slot with
8331 the address immediately after the the "bctr" instruction
8332 in this PLT entry. */
8333 bfd_put_32 (output_bfd, (htab->plt->output_section->vma
8334 + htab->plt->output_offset
8335 + ent->plt.offset + 16),
8336 htab->sgotplt->contents + got_offset);
8337
8338 if (!info->shared)
8339 {
8340 /* Fill in a couple of entries in .rela.plt.unloaded. */
8341 loc = htab->srelplt2->contents
8342 + ((VXWORKS_PLTRESOLVE_RELOCS + reloc_index
8343 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS)
8344 * sizeof (Elf32_External_Rela));
8345
8346 /* Provide the @ha relocation for the first instruction. */
8347 rela.r_offset = (htab->plt->output_section->vma
8348 + htab->plt->output_offset
8349 + ent->plt.offset + 2);
8350 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
8351 R_PPC_ADDR16_HA);
8352 rela.r_addend = got_offset;
8353 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
8354 loc += sizeof (Elf32_External_Rela);
8355
8356 /* Provide the @l relocation for the second instruction. */
8357 rela.r_offset = (htab->plt->output_section->vma
8358 + htab->plt->output_offset
8359 + ent->plt.offset + 6);
8360 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
8361 R_PPC_ADDR16_LO);
8362 rela.r_addend = got_offset;
8363 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
8364 loc += sizeof (Elf32_External_Rela);
8365
8366 /* Provide a relocation for the GOT entry corresponding to this
8367 PLT slot. Point it at the middle of the .plt entry. */
8368 rela.r_offset = (htab->sgotplt->output_section->vma
8369 + htab->sgotplt->output_offset
8370 + got_offset);
8371 rela.r_info = ELF32_R_INFO (htab->elf.hplt->indx,
8372 R_PPC_ADDR32);
8373 rela.r_addend = ent->plt.offset + 16;
8374 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
8375 }
8376
8377 /* VxWorks uses non-standard semantics for R_PPC_JMP_SLOT.
8378 In particular, the offset for the relocation is not the
8379 address of the PLT entry for this function, as specified
8380 by the ABI. Instead, the offset is set to the address of
8381 the GOT slot for this function. See EABI 4.4.4.1. */
8382 rela.r_offset = (htab->sgotplt->output_section->vma
8383 + htab->sgotplt->output_offset
8384 + got_offset);
8385
8386 }
8387 else
8388 {
8389 asection *splt = htab->plt;
8390 if (!htab->elf.dynamic_sections_created
8391 || h->dynindx == -1)
8392 splt = htab->iplt;
8393
8394 rela.r_offset = (splt->output_section->vma
8395 + splt->output_offset
8396 + ent->plt.offset);
8397 if (htab->plt_type == PLT_OLD
8398 || !htab->elf.dynamic_sections_created
8399 || h->dynindx == -1)
8400 {
8401 /* We don't need to fill in the .plt. The ppc dynamic
8402 linker will fill it in. */
8403 }
8404 else
8405 {
8406 bfd_vma val = (htab->glink_pltresolve + ent->plt.offset
8407 + htab->glink->output_section->vma
8408 + htab->glink->output_offset);
8409 bfd_put_32 (output_bfd, val,
8410 splt->contents + ent->plt.offset);
8411 }
8412 }
8413
8414 /* Fill in the entry in the .rela.plt section. */
8415 rela.r_addend = 0;
8416 if (!htab->elf.dynamic_sections_created
8417 || h->dynindx == -1)
8418 {
8419 BFD_ASSERT (h->type == STT_GNU_IFUNC
8420 && h->def_regular
8421 && (h->root.type == bfd_link_hash_defined
8422 || h->root.type == bfd_link_hash_defweak));
8423 rela.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
8424 rela.r_addend = SYM_VAL (h);
8425 }
8426 else
8427 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_JMP_SLOT);
8428
8429 if (!htab->elf.dynamic_sections_created
8430 || h->dynindx == -1)
8431 loc = (htab->reliplt->contents
8432 + (htab->reliplt->reloc_count++
8433 * sizeof (Elf32_External_Rela)));
8434 else
8435 loc = (htab->relplt->contents
8436 + reloc_index * sizeof (Elf32_External_Rela));
8437 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
8438
8439 if (!h->def_regular)
8440 {
8441 /* Mark the symbol as undefined, rather than as
8442 defined in the .plt section. Leave the value if
8443 there were any relocations where pointer equality
8444 matters (this is a clue for the dynamic linker, to
8445 make function pointer comparisons work between an
8446 application and shared library), otherwise set it
8447 to zero. */
8448 sym->st_shndx = SHN_UNDEF;
8449 if (!h->pointer_equality_needed)
8450 sym->st_value = 0;
8451 else if (!h->ref_regular_nonweak)
8452 {
8453 /* This breaks function pointer comparisons, but
8454 that is better than breaking tests for a NULL
8455 function pointer. */
8456 sym->st_value = 0;
8457 }
8458 }
8459 else if (h->type == STT_GNU_IFUNC
8460 && !info->shared)
8461 {
8462 /* Set the value of ifunc symbols in a non-pie
8463 executable to the glink entry. This is to avoid
8464 text relocations. We can't do this for ifunc in
8465 allocate_dynrelocs, as we do for normal dynamic
8466 function symbols with plt entries, because we need
8467 to keep the original value around for the ifunc
8468 relocation. */
8469 sym->st_shndx = (_bfd_elf_section_from_bfd_section
8470 (output_bfd, htab->glink->output_section));
8471 sym->st_value = (ent->glink_offset
8472 + htab->glink->output_offset
8473 + htab->glink->output_section->vma);
8474 }
8475 doneone = TRUE;
8476 }
8477
8478 if (htab->plt_type == PLT_NEW
8479 || !htab->elf.dynamic_sections_created
8480 || h->dynindx == -1)
8481 {
8482 unsigned char *p;
8483 asection *splt = htab->plt;
8484 if (!htab->elf.dynamic_sections_created
8485 || h->dynindx == -1)
8486 splt = htab->iplt;
8487
8488 p = (unsigned char *) htab->glink->contents + ent->glink_offset;
8489
8490 if (h == htab->tls_get_addr && !htab->no_tls_get_addr_opt)
8491 {
8492 bfd_put_32 (output_bfd, LWZ_11_3, p);
8493 p += 4;
8494 bfd_put_32 (output_bfd, LWZ_12_3 + 4, p);
8495 p += 4;
8496 bfd_put_32 (output_bfd, MR_0_3, p);
8497 p += 4;
8498 bfd_put_32 (output_bfd, CMPWI_11_0, p);
8499 p += 4;
8500 bfd_put_32 (output_bfd, ADD_3_12_2, p);
8501 p += 4;
8502 bfd_put_32 (output_bfd, BEQLR, p);
8503 p += 4;
8504 bfd_put_32 (output_bfd, MR_3_0, p);
8505 p += 4;
8506 bfd_put_32 (output_bfd, NOP, p);
8507 p += 4;
8508 }
8509
8510 write_glink_stub (ent, splt, p, info);
8511
8512 if (!info->shared)
8513 /* We only need one non-PIC glink stub. */
8514 break;
8515 }
8516 else
8517 break;
8518 }
8519
8520 if (h->needs_copy)
8521 {
8522 asection *s;
8523 Elf_Internal_Rela rela;
8524 bfd_byte *loc;
8525
8526 /* This symbols needs a copy reloc. Set it up. */
8527
8528#ifdef DEBUG
8529 fprintf (stderr, ", copy");
8530#endif
8531
8532 BFD_ASSERT (h->dynindx != -1);
8533
8534 if (ppc_elf_hash_entry (h)->has_sda_refs)
8535 s = htab->relsbss;
8536 else
8537 s = htab->relbss;
8538 BFD_ASSERT (s != NULL);
8539
8540 rela.r_offset = SYM_VAL (h);
8541 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_COPY);
8542 rela.r_addend = 0;
8543 loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
8544 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
8545 }
8546
8547#ifdef DEBUG
8548 fprintf (stderr, "\n");
8549#endif
8550
8551 /* Mark some specially defined symbols as absolute. */
8552 if (strcmp (h->root.root.string, "_DYNAMIC") == 0
8553 || (!htab->is_vxworks
8554 && (h == htab->elf.hgot
8555 || strcmp (h->root.root.string,
8556 "_PROCEDURE_LINKAGE_TABLE_") == 0)))
8557 sym->st_shndx = SHN_ABS;
8558
8559 return TRUE;
8560}
8561\f
8562static enum elf_reloc_type_class
8563ppc_elf_reloc_type_class (const Elf_Internal_Rela *rela)
8564{
8565 switch (ELF32_R_TYPE (rela->r_info))
8566 {
8567 case R_PPC_RELATIVE:
8568 return reloc_class_relative;
8569 case R_PPC_REL24:
8570 case R_PPC_ADDR24:
8571 case R_PPC_JMP_SLOT:
8572 return reloc_class_plt;
8573 case R_PPC_COPY:
8574 return reloc_class_copy;
8575 default:
8576 return reloc_class_normal;
8577 }
8578}
8579\f
8580/* Finish up the dynamic sections. */
8581
8582static bfd_boolean
8583ppc_elf_finish_dynamic_sections (bfd *output_bfd,
8584 struct bfd_link_info *info)
8585{
8586 asection *sdyn;
8587 asection *splt;
8588 struct ppc_elf_link_hash_table *htab;
8589 bfd_vma got;
8590 bfd *dynobj;
8591 bfd_boolean ret = TRUE;
8592
8593#ifdef DEBUG
8594 fprintf (stderr, "ppc_elf_finish_dynamic_sections called\n");
8595#endif
8596
8597 htab = ppc_elf_hash_table (info);
8598 dynobj = elf_hash_table (info)->dynobj;
8599 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
8600 if (htab->is_vxworks)
8601 splt = bfd_get_section_by_name (dynobj, ".plt");
8602 else
8603 splt = NULL;
8604
8605 got = 0;
8606 if (htab->elf.hgot != NULL)
8607 got = SYM_VAL (htab->elf.hgot);
8608
8609 if (htab->elf.dynamic_sections_created)
8610 {
8611 Elf32_External_Dyn *dyncon, *dynconend;
8612
8613 BFD_ASSERT (htab->plt != NULL && sdyn != NULL);
8614
8615 dyncon = (Elf32_External_Dyn *) sdyn->contents;
8616 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
8617 for (; dyncon < dynconend; dyncon++)
8618 {
8619 Elf_Internal_Dyn dyn;
8620 asection *s;
8621
8622 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
8623
8624 switch (dyn.d_tag)
8625 {
8626 case DT_PLTGOT:
8627 if (htab->is_vxworks)
8628 s = htab->sgotplt;
8629 else
8630 s = htab->plt;
8631 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
8632 break;
8633
8634 case DT_PLTRELSZ:
8635 dyn.d_un.d_val = htab->relplt->size;
8636 break;
8637
8638 case DT_JMPREL:
8639 s = htab->relplt;
8640 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
8641 break;
8642
8643 case DT_PPC_GOT:
8644 dyn.d_un.d_ptr = got;
8645 break;
8646
8647 case DT_RELASZ:
8648 if (htab->is_vxworks)
8649 {
8650 if (htab->relplt)
8651 dyn.d_un.d_ptr -= htab->relplt->size;
8652 break;
8653 }
8654 continue;
8655
8656 default:
8657 if (htab->is_vxworks
8658 && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn))
8659 break;
8660 continue;
8661 }
8662
8663 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
8664 }
8665 }
8666
8667 if (htab->got != NULL)
8668 {
8669 if (htab->elf.hgot->root.u.def.section == htab->got
8670 || htab->elf.hgot->root.u.def.section == htab->sgotplt)
8671 {
8672 unsigned char *p = htab->elf.hgot->root.u.def.section->contents;
8673
8674 p += htab->elf.hgot->root.u.def.value;
8675 if (htab->plt_type == PLT_OLD)
8676 {
8677 /* Add a blrl instruction at _GLOBAL_OFFSET_TABLE_-4
8678 so that a function can easily find the address of
8679 _GLOBAL_OFFSET_TABLE_. */
8680 BFD_ASSERT (htab->elf.hgot->root.u.def.value - 4
8681 < htab->elf.hgot->root.u.def.section->size);
8682 bfd_put_32 (output_bfd, 0x4e800021, p - 4);
8683 }
8684
8685 if (sdyn != NULL)
8686 {
8687 bfd_vma val = sdyn->output_section->vma + sdyn->output_offset;
8688 BFD_ASSERT (htab->elf.hgot->root.u.def.value
8689 < htab->elf.hgot->root.u.def.section->size);
8690 bfd_put_32 (output_bfd, val, p);
8691 }
8692 }
8693 else
8694 {
8695 info->callbacks->einfo (_("%P: %s not defined in linker created %s\n"),
8696 htab->elf.hgot->root.root.string,
8697 (htab->sgotplt != NULL
8698 ? htab->sgotplt->name : htab->got->name));
8699 bfd_set_error (bfd_error_bad_value);
8700 ret = FALSE;
8701 }
8702
8703 elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 4;
8704 }
8705
8706 /* Fill in the first entry in the VxWorks procedure linkage table. */
8707 if (splt && splt->size > 0)
8708 {
8709 /* Use the right PLT. */
8710 const bfd_vma *plt_entry = (info->shared
8711 ? ppc_elf_vxworks_pic_plt0_entry
8712 : ppc_elf_vxworks_plt0_entry);
8713
8714 if (!info->shared)
8715 {
8716 bfd_vma got_value = SYM_VAL (htab->elf.hgot);
8717
8718 bfd_put_32 (output_bfd, plt_entry[0] | PPC_HA (got_value),
8719 splt->contents + 0);
8720 bfd_put_32 (output_bfd, plt_entry[1] | PPC_LO (got_value),
8721 splt->contents + 4);
8722 }
8723 else
8724 {
8725 bfd_put_32 (output_bfd, plt_entry[0], splt->contents + 0);
8726 bfd_put_32 (output_bfd, plt_entry[1], splt->contents + 4);
8727 }
8728 bfd_put_32 (output_bfd, plt_entry[2], splt->contents + 8);
8729 bfd_put_32 (output_bfd, plt_entry[3], splt->contents + 12);
8730 bfd_put_32 (output_bfd, plt_entry[4], splt->contents + 16);
8731 bfd_put_32 (output_bfd, plt_entry[5], splt->contents + 20);
8732 bfd_put_32 (output_bfd, plt_entry[6], splt->contents + 24);
8733 bfd_put_32 (output_bfd, plt_entry[7], splt->contents + 28);
8734
8735 if (! info->shared)
8736 {
8737 Elf_Internal_Rela rela;
8738 bfd_byte *loc;
8739
8740 loc = htab->srelplt2->contents;
8741
8742 /* Output the @ha relocation for the first instruction. */
8743 rela.r_offset = (htab->plt->output_section->vma
8744 + htab->plt->output_offset
8745 + 2);
8746 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
8747 rela.r_addend = 0;
8748 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
8749 loc += sizeof (Elf32_External_Rela);
8750
8751 /* Output the @l relocation for the second instruction. */
8752 rela.r_offset = (htab->plt->output_section->vma
8753 + htab->plt->output_offset
8754 + 6);
8755 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
8756 rela.r_addend = 0;
8757 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
8758 loc += sizeof (Elf32_External_Rela);
8759
8760 /* Fix up the remaining relocations. They may have the wrong
8761 symbol index for _G_O_T_ or _P_L_T_ depending on the order
8762 in which symbols were output. */
8763 while (loc < htab->srelplt2->contents + htab->srelplt2->size)
8764 {
8765 Elf_Internal_Rela rel;
8766
8767 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
8768 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
8769 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
8770 loc += sizeof (Elf32_External_Rela);
8771
8772 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
8773 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
8774 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
8775 loc += sizeof (Elf32_External_Rela);
8776
8777 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
8778 rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_PPC_ADDR32);
8779 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
8780 loc += sizeof (Elf32_External_Rela);
8781 }
8782 }
8783 }
8784
8785 if (htab->glink != NULL
8786 && htab->glink->contents != NULL
8787 && htab->elf.dynamic_sections_created)
8788 {
8789 unsigned char *p;
8790 unsigned char *endp;
8791 bfd_vma res0;
8792 unsigned int i;
8793
8794 /*
8795 * PIC glink code is the following:
8796 *
8797 * # ith PLT code stub.
8798 * addis 11,30,(plt+(i-1)*4-got)@ha
8799 * lwz 11,(plt+(i-1)*4-got)@l(11)
8800 * mtctr 11
8801 * bctr
8802 *
8803 * # A table of branches, one for each plt entry.
8804 * # The idea is that the plt call stub loads ctr and r11 with these
8805 * # addresses, so (r11 - res_0) gives the plt index * 4.
8806 * res_0: b PLTresolve
8807 * res_1: b PLTresolve
8808 * .
8809 * # Some number of entries towards the end can be nops
8810 * res_n_m3: nop
8811 * res_n_m2: nop
8812 * res_n_m1:
8813 *
8814 * PLTresolve:
8815 * addis 11,11,(1f-res_0)@ha
8816 * mflr 0
8817 * bcl 20,31,1f
8818 * 1: addi 11,11,(1b-res_0)@l
8819 * mflr 12
8820 * mtlr 0
8821 * sub 11,11,12 # r11 = index * 4
8822 * addis 12,12,(got+4-1b)@ha
8823 * lwz 0,(got+4-1b)@l(12) # got[1] address of dl_runtime_resolve
8824 * lwz 12,(got+8-1b)@l(12) # got[2] contains the map address
8825 * mtctr 0
8826 * add 0,11,11
8827 * add 11,0,11 # r11 = index * 12 = reloc offset.
8828 * bctr
8829 */
8830 static const unsigned int pic_plt_resolve[] =
8831 {
8832 ADDIS_11_11,
8833 MFLR_0,
8834 BCL_20_31,
8835 ADDI_11_11,
8836 MFLR_12,
8837 MTLR_0,
8838 SUB_11_11_12,
8839 ADDIS_12_12,
8840 LWZ_0_12,
8841 LWZ_12_12,
8842 MTCTR_0,
8843 ADD_0_11_11,
8844 ADD_11_0_11,
8845 BCTR,
8846 NOP,
8847 NOP
8848 };
8849
8850 /*
8851 * Non-PIC glink code is a little simpler.
8852 *
8853 * # ith PLT code stub.
8854 * lis 11,(plt+(i-1)*4)@ha
8855 * lwz 11,(plt+(i-1)*4)@l(11)
8856 * mtctr 11
8857 * bctr
8858 *
8859 * The branch table is the same, then comes
8860 *
8861 * PLTresolve:
8862 * lis 12,(got+4)@ha
8863 * addis 11,11,(-res_0)@ha
8864 * lwz 0,(got+4)@l(12) # got[1] address of dl_runtime_resolve
8865 * addi 11,11,(-res_0)@l # r11 = index * 4
8866 * mtctr 0
8867 * add 0,11,11
8868 * lwz 12,(got+8)@l(12) # got[2] contains the map address
8869 * add 11,0,11 # r11 = index * 12 = reloc offset.
8870 * bctr
8871 */
8872 static const unsigned int plt_resolve[] =
8873 {
8874 LIS_12,
8875 ADDIS_11_11,
8876 LWZ_0_12,
8877 ADDI_11_11,
8878 MTCTR_0,
8879 ADD_0_11_11,
8880 LWZ_12_12,
8881 ADD_11_0_11,
8882 BCTR,
8883 NOP,
8884 NOP,
8885 NOP,
8886 NOP,
8887 NOP,
8888 NOP,
8889 NOP
8890 };
8891
8892 if (ARRAY_SIZE (pic_plt_resolve) != GLINK_PLTRESOLVE / 4)
8893 abort ();
8894 if (ARRAY_SIZE (plt_resolve) != GLINK_PLTRESOLVE / 4)
8895 abort ();
8896
8897 /* Build the branch table, one for each plt entry (less one),
8898 and perhaps some padding. */
8899 p = htab->glink->contents;
8900 p += htab->glink_pltresolve;
8901 endp = htab->glink->contents;
8902 endp += htab->glink->size - GLINK_PLTRESOLVE;
8903 while (p < endp - 8 * 4)
8904 {
8905 bfd_put_32 (output_bfd, B + endp - p, p);
8906 p += 4;
8907 }
8908 while (p < endp)
8909 {
8910 bfd_put_32 (output_bfd, NOP, p);
8911 p += 4;
8912 }
8913
8914 res0 = (htab->glink_pltresolve
8915 + htab->glink->output_section->vma
8916 + htab->glink->output_offset);
8917
8918 /* Last comes the PLTresolve stub. */
8919 if (info->shared)
8920 {
8921 bfd_vma bcl;
8922
8923 for (i = 0; i < ARRAY_SIZE (pic_plt_resolve); i++)
8924 {
8925 bfd_put_32 (output_bfd, pic_plt_resolve[i], p);
8926 p += 4;
8927 }
8928 p -= 4 * ARRAY_SIZE (pic_plt_resolve);
8929
8930 bcl = (htab->glink->size - GLINK_PLTRESOLVE + 3*4
8931 + htab->glink->output_section->vma
8932 + htab->glink->output_offset);
8933
8934 bfd_put_32 (output_bfd,
8935 ADDIS_11_11 + PPC_HA (bcl - res0), p + 0*4);
8936 bfd_put_32 (output_bfd,
8937 ADDI_11_11 + PPC_LO (bcl - res0), p + 3*4);
8938 bfd_put_32 (output_bfd,
8939 ADDIS_12_12 + PPC_HA (got + 4 - bcl), p + 7*4);
8940 if (PPC_HA (got + 4 - bcl) == PPC_HA (got + 8 - bcl))
8941 {
8942 bfd_put_32 (output_bfd,
8943 LWZ_0_12 + PPC_LO (got + 4 - bcl), p + 8*4);
8944 bfd_put_32 (output_bfd,
8945 LWZ_12_12 + PPC_LO (got + 8 - bcl), p + 9*4);
8946 }
8947 else
8948 {
8949 bfd_put_32 (output_bfd,
8950 LWZU_0_12 + PPC_LO (got + 4 - bcl), p + 8*4);
8951 bfd_put_32 (output_bfd,
8952 LWZ_12_12 + 4, p + 9*4);
8953 }
8954 }
8955 else
8956 {
8957 for (i = 0; i < ARRAY_SIZE (plt_resolve); i++)
8958 {
8959 bfd_put_32 (output_bfd, plt_resolve[i], p);
8960 p += 4;
8961 }
8962 p -= 4 * ARRAY_SIZE (plt_resolve);
8963
8964 bfd_put_32 (output_bfd,
8965 LIS_12 + PPC_HA (got + 4), p + 0*4);
8966 bfd_put_32 (output_bfd,
8967 ADDIS_11_11 + PPC_HA (-res0), p + 1*4);
8968 bfd_put_32 (output_bfd,
8969 ADDI_11_11 + PPC_LO (-res0), p + 3*4);
8970 if (PPC_HA (got + 4) == PPC_HA (got + 8))
8971 {
8972 bfd_put_32 (output_bfd,
8973 LWZ_0_12 + PPC_LO (got + 4), p + 2*4);
8974 bfd_put_32 (output_bfd,
8975 LWZ_12_12 + PPC_LO (got + 8), p + 6*4);
8976 }
8977 else
8978 {
8979 bfd_put_32 (output_bfd,
8980 LWZU_0_12 + PPC_LO (got + 4), p + 2*4);
8981 bfd_put_32 (output_bfd,
8982 LWZ_12_12 + 4, p + 6*4);
8983 }
8984 }
8985 }
8986
8987 if (htab->glink_eh_frame != NULL
8988 && htab->glink_eh_frame->contents != NULL)
8989 {
8990 unsigned char *p = htab->glink_eh_frame->contents;
8991 bfd_vma val;
8992
8993 memcpy (p, glink_eh_frame_cie, sizeof (glink_eh_frame_cie));
8994 /* CIE length (rewrite in case little-endian). */
8995 bfd_put_32 (htab->elf.dynobj, sizeof (glink_eh_frame_cie) - 4, p);
8996 p += sizeof (glink_eh_frame_cie);
8997 /* FDE length. */
8998 val = htab->glink_eh_frame->size - 4 - sizeof (glink_eh_frame_cie);
8999 bfd_put_32 (htab->elf.dynobj, val, p);
9000 p += 4;
9001 /* CIE pointer. */
9002 val = p - htab->glink_eh_frame->contents;
9003 bfd_put_32 (htab->elf.dynobj, val, p);
9004 p += 4;
9005 /* Offset to .glink. */
9006 val = (htab->glink->output_section->vma
9007 + htab->glink->output_offset);
9008 val -= (htab->glink_eh_frame->output_section->vma
9009 + htab->glink_eh_frame->output_offset);
9010 val -= p - htab->glink_eh_frame->contents;
9011 bfd_put_32 (htab->elf.dynobj, val, p);
9012 p += 4;
9013 /* .glink size. */
9014 bfd_put_32 (htab->elf.dynobj, htab->glink->size, p);
9015 p += 4;
9016 /* Augmentation. */
9017 p += 1;
9018
9019 if (info->shared
9020 && htab->elf.dynamic_sections_created)
9021 {
9022 bfd_vma adv = (htab->glink->size - GLINK_PLTRESOLVE + 8) >> 2;
9023 if (adv < 64)
9024 *p++ = DW_CFA_advance_loc + adv;
9025 else if (adv < 256)
9026 {
9027 *p++ = DW_CFA_advance_loc1;
9028 *p++ = adv;
9029 }
9030 else if (adv < 65536)
9031 {
9032 *p++ = DW_CFA_advance_loc2;
9033 bfd_put_16 (htab->elf.dynobj, adv, p);
9034 p += 2;
9035 }
9036 else
9037 {
9038 *p++ = DW_CFA_advance_loc4;
9039 bfd_put_32 (htab->elf.dynobj, adv, p);
9040 p += 4;
9041 }
9042 *p++ = DW_CFA_register;
9043 *p++ = 65;
9044 p++;
9045 *p++ = DW_CFA_advance_loc + 4;
9046 *p++ = DW_CFA_restore_extended;
9047 *p++ = 65;
9048 }
9049 BFD_ASSERT ((bfd_vma) ((p + 3 - htab->glink_eh_frame->contents) & -4)
9050 == htab->glink_eh_frame->size);
9051
9052 if (htab->glink_eh_frame->sec_info_type == ELF_INFO_TYPE_EH_FRAME
9053 && !_bfd_elf_write_section_eh_frame (output_bfd, info,
9054 htab->glink_eh_frame,
9055 htab->glink_eh_frame->contents))
9056 return FALSE;
9057 }
9058
9059 return ret;
9060}
9061\f
9062#define TARGET_LITTLE_SYM bfd_elf32_powerpcle_vec
9063#define TARGET_LITTLE_NAME "elf32-powerpcle"
9064#define TARGET_BIG_SYM bfd_elf32_powerpc_vec
9065#define TARGET_BIG_NAME "elf32-powerpc"
9066#define ELF_ARCH bfd_arch_powerpc
9067#define ELF_TARGET_ID PPC32_ELF_DATA
9068#define ELF_MACHINE_CODE EM_PPC
9069#ifdef __QNXTARGET__
9070#define ELF_MAXPAGESIZE 0x1000
9071#else
9072#define ELF_MAXPAGESIZE 0x10000
9073#endif
9074#define ELF_MINPAGESIZE 0x1000
9075#define ELF_COMMONPAGESIZE 0x1000
9076#define elf_info_to_howto ppc_elf_info_to_howto
9077
9078#ifdef EM_CYGNUS_POWERPC
9079#define ELF_MACHINE_ALT1 EM_CYGNUS_POWERPC
9080#endif
9081
9082#ifdef EM_PPC_OLD
9083#define ELF_MACHINE_ALT2 EM_PPC_OLD
9084#endif
9085
9086#define elf_backend_plt_not_loaded 1
9087#define elf_backend_can_gc_sections 1
9088#define elf_backend_can_refcount 1
9089#define elf_backend_rela_normal 1
9090
9091#define bfd_elf32_mkobject ppc_elf_mkobject
9092#define bfd_elf32_bfd_merge_private_bfd_data ppc_elf_merge_private_bfd_data
9093#define bfd_elf32_bfd_relax_section ppc_elf_relax_section
9094#define bfd_elf32_bfd_reloc_type_lookup ppc_elf_reloc_type_lookup
9095#define bfd_elf32_bfd_reloc_name_lookup ppc_elf_reloc_name_lookup
9096#define bfd_elf32_bfd_set_private_flags ppc_elf_set_private_flags
9097#define bfd_elf32_bfd_link_hash_table_create ppc_elf_link_hash_table_create
9098#define bfd_elf32_get_synthetic_symtab ppc_elf_get_synthetic_symtab
9099
9100#define elf_backend_object_p ppc_elf_object_p
9101#define elf_backend_gc_mark_hook ppc_elf_gc_mark_hook
9102#define elf_backend_gc_sweep_hook ppc_elf_gc_sweep_hook
9103#define elf_backend_section_from_shdr ppc_elf_section_from_shdr
9104#define elf_backend_relocate_section ppc_elf_relocate_section
9105#define elf_backend_create_dynamic_sections ppc_elf_create_dynamic_sections
9106#define elf_backend_check_relocs ppc_elf_check_relocs
9107#define elf_backend_copy_indirect_symbol ppc_elf_copy_indirect_symbol
9108#define elf_backend_adjust_dynamic_symbol ppc_elf_adjust_dynamic_symbol
9109#define elf_backend_add_symbol_hook ppc_elf_add_symbol_hook
9110#define elf_backend_size_dynamic_sections ppc_elf_size_dynamic_sections
9111#define elf_backend_hash_symbol ppc_elf_hash_symbol
9112#define elf_backend_finish_dynamic_symbol ppc_elf_finish_dynamic_symbol
9113#define elf_backend_finish_dynamic_sections ppc_elf_finish_dynamic_sections
9114#define elf_backend_fake_sections ppc_elf_fake_sections
9115#define elf_backend_additional_program_headers ppc_elf_additional_program_headers
9116#define elf_backend_grok_prstatus ppc_elf_grok_prstatus
9117#define elf_backend_grok_psinfo ppc_elf_grok_psinfo
9118#define elf_backend_write_core_note ppc_elf_write_core_note
9119#define elf_backend_reloc_type_class ppc_elf_reloc_type_class
9120#define elf_backend_begin_write_processing ppc_elf_begin_write_processing
9121#define elf_backend_final_write_processing ppc_elf_final_write_processing
9122#define elf_backend_write_section ppc_elf_write_section
9123#define elf_backend_get_sec_type_attr ppc_elf_get_sec_type_attr
9124#define elf_backend_plt_sym_val ppc_elf_plt_sym_val
9125#define elf_backend_action_discarded ppc_elf_action_discarded
9126#define elf_backend_init_index_section _bfd_elf_init_1_index_section
9127#define elf_backend_post_process_headers _bfd_elf_set_osabi
9128
9129#include "elf32-target.h"
9130
9131/* FreeBSD Target */
9132
9133#undef TARGET_LITTLE_SYM
9134#undef TARGET_LITTLE_NAME
9135
9136#undef TARGET_BIG_SYM
9137#define TARGET_BIG_SYM bfd_elf32_powerpc_freebsd_vec
9138#undef TARGET_BIG_NAME
9139#define TARGET_BIG_NAME "elf32-powerpc-freebsd"
9140
9141#undef ELF_OSABI
9142#define ELF_OSABI ELFOSABI_FREEBSD
9143
9144#undef elf32_bed
9145#define elf32_bed elf32_powerpc_fbsd_bed
9146
9147#include "elf32-target.h"
9148
9149/* VxWorks Target */
9150
9151#undef TARGET_LITTLE_SYM
9152#undef TARGET_LITTLE_NAME
9153
9154#undef TARGET_BIG_SYM
9155#define TARGET_BIG_SYM bfd_elf32_powerpc_vxworks_vec
9156#undef TARGET_BIG_NAME
9157#define TARGET_BIG_NAME "elf32-powerpc-vxworks"
9158
9159#undef ELF_OSABI
9160
9161/* VxWorks uses the elf default section flags for .plt. */
9162static const struct bfd_elf_special_section *
9163ppc_elf_vxworks_get_sec_type_attr (bfd *abfd ATTRIBUTE_UNUSED, asection *sec)
9164{
9165 if (sec->name == NULL)
9166 return NULL;
9167
9168 if (strcmp (sec->name, ".plt") == 0)
9169 return _bfd_elf_get_sec_type_attr (abfd, sec);
9170
9171 return ppc_elf_get_sec_type_attr (abfd, sec);
9172}
9173
9174/* Like ppc_elf_link_hash_table_create, but overrides
9175 appropriately for VxWorks. */
9176static struct bfd_link_hash_table *
9177ppc_elf_vxworks_link_hash_table_create (bfd *abfd)
9178{
9179 struct bfd_link_hash_table *ret;
9180
9181 ret = ppc_elf_link_hash_table_create (abfd);
9182 if (ret)
9183 {
9184 struct ppc_elf_link_hash_table *htab
9185 = (struct ppc_elf_link_hash_table *)ret;
9186 htab->is_vxworks = 1;
9187 htab->plt_type = PLT_VXWORKS;
9188 htab->plt_entry_size = VXWORKS_PLT_ENTRY_SIZE;
9189 htab->plt_slot_size = VXWORKS_PLT_ENTRY_SIZE;
9190 htab->plt_initial_entry_size = VXWORKS_PLT_INITIAL_ENTRY_SIZE;
9191 }
9192 return ret;
9193}
9194
9195/* Tweak magic VxWorks symbols as they are loaded. */
9196static bfd_boolean
9197ppc_elf_vxworks_add_symbol_hook (bfd *abfd,
9198 struct bfd_link_info *info,
9199 Elf_Internal_Sym *sym,
9200 const char **namep ATTRIBUTE_UNUSED,
9201 flagword *flagsp ATTRIBUTE_UNUSED,
9202 asection **secp,
9203 bfd_vma *valp)
9204{
9205 if (!elf_vxworks_add_symbol_hook(abfd, info, sym,namep, flagsp, secp,
9206 valp))
9207 return FALSE;
9208
9209 return ppc_elf_add_symbol_hook(abfd, info, sym,namep, flagsp, secp, valp);
9210}
9211
9212static void
9213ppc_elf_vxworks_final_write_processing (bfd *abfd, bfd_boolean linker)
9214{
9215 ppc_elf_final_write_processing(abfd, linker);
9216 elf_vxworks_final_write_processing(abfd, linker);
9217}
9218
9219/* On VxWorks, we emit relocations against _PROCEDURE_LINKAGE_TABLE_, so
9220 define it. */
9221#undef elf_backend_want_plt_sym
9222#define elf_backend_want_plt_sym 1
9223#undef elf_backend_want_got_plt
9224#define elf_backend_want_got_plt 1
9225#undef elf_backend_got_symbol_offset
9226#define elf_backend_got_symbol_offset 0
9227#undef elf_backend_plt_not_loaded
9228#define elf_backend_plt_not_loaded 0
9229#undef elf_backend_plt_readonly
9230#define elf_backend_plt_readonly 1
9231#undef elf_backend_got_header_size
9232#define elf_backend_got_header_size 12
9233
9234#undef bfd_elf32_get_synthetic_symtab
9235
9236#undef bfd_elf32_bfd_link_hash_table_create
9237#define bfd_elf32_bfd_link_hash_table_create \
9238 ppc_elf_vxworks_link_hash_table_create
9239#undef elf_backend_add_symbol_hook
9240#define elf_backend_add_symbol_hook \
9241 ppc_elf_vxworks_add_symbol_hook
9242#undef elf_backend_link_output_symbol_hook
9243#define elf_backend_link_output_symbol_hook \
9244 elf_vxworks_link_output_symbol_hook
9245#undef elf_backend_final_write_processing
9246#define elf_backend_final_write_processing \
9247 ppc_elf_vxworks_final_write_processing
9248#undef elf_backend_get_sec_type_attr
9249#define elf_backend_get_sec_type_attr \
9250 ppc_elf_vxworks_get_sec_type_attr
9251#undef elf_backend_emit_relocs
9252#define elf_backend_emit_relocs \
9253 elf_vxworks_emit_relocs
9254
9255#undef elf32_bed
9256#define elf32_bed ppc_elf_vxworks_bed
9257#undef elf_backend_post_process_headers
9258
9259#include "elf32-target.h"
GDB Binutils - Deliverables
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