projects / deliverable / binutils-gdb.git / blob
? search:
summary | shortlog | log | commit | commitdiff | tree
blame | history | raw | HEAD
Pass link_info to _bfd_merge_private_bfd_data
[deliverable/binutils-gdb.git] / bfd / elf32-ppc.c
1 /* PowerPC-specific support for 32-bit ELF
2 Copyright (C) 1994-2016 Free Software Foundation, Inc.
3 Written by Ian Lance Taylor, Cygnus Support.
4
5 This file is part of BFD, the Binary File Descriptor library.
6
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
11
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
16
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the
19 Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor,
20 Boston, MA 02110-1301, USA. */
21
22
23 /* This file is based on a preliminary PowerPC ELF ABI. The
24 information may not match the final PowerPC ELF ABI. It includes
25 suggestions from the in-progress Embedded PowerPC ABI, and that
26 information may also not match. */
27
28 #include "sysdep.h"
29 #include <stdarg.h>
30 #include "bfd.h"
31 #include "bfdlink.h"
32 #include "libbfd.h"
33 #include "elf-bfd.h"
34 #include "elf/ppc.h"
35 #include "elf32-ppc.h"
36 #include "elf-vxworks.h"
37 #include "dwarf2.h"
38
39 typedef enum split16_format_type
40 {
41 split16a_type = 0,
42 split16d_type
43 }
44 split16_format_type;
45
46 /* RELA relocations are used here. */
47
48 static bfd_reloc_status_type ppc_elf_addr16_ha_reloc
49 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
50 static bfd_reloc_status_type ppc_elf_unhandled_reloc
51 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
52
53 /* Branch prediction bit for branch taken relocs. */
54 #define BRANCH_PREDICT_BIT 0x200000
55 /* Mask to set RA in memory instructions. */
56 #define RA_REGISTER_MASK 0x001f0000
57 /* Value to shift register by to insert RA. */
58 #define RA_REGISTER_SHIFT 16
59
60 /* The name of the dynamic interpreter. This is put in the .interp
61 section. */
62 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
63
64 /* For old-style PLT. */
65 /* The number of single-slot PLT entries (the rest use two slots). */
66 #define PLT_NUM_SINGLE_ENTRIES 8192
67
68 /* For new-style .glink and .plt. */
69 #define GLINK_PLTRESOLVE 16*4
70 #define GLINK_ENTRY_SIZE 4*4
71 #define TLS_GET_ADDR_GLINK_SIZE 12*4
72
73 /* VxWorks uses its own plt layout, filled in by the static linker. */
74
75 /* The standard VxWorks PLT entry. */
76 #define VXWORKS_PLT_ENTRY_SIZE 32
77 static const bfd_vma ppc_elf_vxworks_plt_entry
78 [VXWORKS_PLT_ENTRY_SIZE / 4] =
79 {
80 0x3d800000, /* lis r12,0 */
81 0x818c0000, /* lwz r12,0(r12) */
82 0x7d8903a6, /* mtctr r12 */
83 0x4e800420, /* bctr */
84 0x39600000, /* li r11,0 */
85 0x48000000, /* b 14 <.PLT0resolve+0x4> */
86 0x60000000, /* nop */
87 0x60000000, /* nop */
88 };
89 static const bfd_vma ppc_elf_vxworks_pic_plt_entry
90 [VXWORKS_PLT_ENTRY_SIZE / 4] =
91 {
92 0x3d9e0000, /* addis r12,r30,0 */
93 0x818c0000, /* lwz r12,0(r12) */
94 0x7d8903a6, /* mtctr r12 */
95 0x4e800420, /* bctr */
96 0x39600000, /* li r11,0 */
97 0x48000000, /* b 14 <.PLT0resolve+0x4> 14: R_PPC_REL24 .PLTresolve */
98 0x60000000, /* nop */
99 0x60000000, /* nop */
100 };
101
102 /* The initial VxWorks PLT entry. */
103 #define VXWORKS_PLT_INITIAL_ENTRY_SIZE 32
104 static const bfd_vma ppc_elf_vxworks_plt0_entry
105 [VXWORKS_PLT_INITIAL_ENTRY_SIZE / 4] =
106 {
107 0x3d800000, /* lis r12,0 */
108 0x398c0000, /* addi r12,r12,0 */
109 0x800c0008, /* lwz r0,8(r12) */
110 0x7c0903a6, /* mtctr r0 */
111 0x818c0004, /* lwz r12,4(r12) */
112 0x4e800420, /* bctr */
113 0x60000000, /* nop */
114 0x60000000, /* nop */
115 };
116 static const bfd_vma ppc_elf_vxworks_pic_plt0_entry
117 [VXWORKS_PLT_INITIAL_ENTRY_SIZE / 4] =
118 {
119 0x819e0008, /* lwz r12,8(r30) */
120 0x7d8903a6, /* mtctr r12 */
121 0x819e0004, /* lwz r12,4(r30) */
122 0x4e800420, /* bctr */
123 0x60000000, /* nop */
124 0x60000000, /* nop */
125 0x60000000, /* nop */
126 0x60000000, /* nop */
127 };
128
129 /* For executables, we have some additional relocations in
130 .rela.plt.unloaded, for the kernel loader. */
131
132 /* The number of non-JMP_SLOT relocations per PLT0 slot. */
133 #define VXWORKS_PLT_NON_JMP_SLOT_RELOCS 3
134 /* The number of relocations in the PLTResolve slot. */
135 #define VXWORKS_PLTRESOLVE_RELOCS 2
136 /* The number of relocations in the PLTResolve slot when when creating
137 a shared library. */
138 #define VXWORKS_PLTRESOLVE_RELOCS_SHLIB 0
139
140 /* Some instructions. */
141 #define ADDIS_11_11 0x3d6b0000
142 #define ADDIS_11_30 0x3d7e0000
143 #define ADDIS_12_12 0x3d8c0000
144 #define ADDI_11_11 0x396b0000
145 #define ADD_0_11_11 0x7c0b5a14
146 #define ADD_3_12_2 0x7c6c1214
147 #define ADD_11_0_11 0x7d605a14
148 #define B 0x48000000
149 #define BA 0x48000002
150 #define BCL_20_31 0x429f0005
151 #define BCTR 0x4e800420
152 #define BEQLR 0x4d820020
153 #define CMPWI_11_0 0x2c0b0000
154 #define LIS_11 0x3d600000
155 #define LIS_12 0x3d800000
156 #define LWZU_0_12 0x840c0000
157 #define LWZ_0_12 0x800c0000
158 #define LWZ_11_3 0x81630000
159 #define LWZ_11_11 0x816b0000
160 #define LWZ_11_30 0x817e0000
161 #define LWZ_12_3 0x81830000
162 #define LWZ_12_12 0x818c0000
163 #define MR_0_3 0x7c601b78
164 #define MR_3_0 0x7c030378
165 #define MFLR_0 0x7c0802a6
166 #define MFLR_12 0x7d8802a6
167 #define MTCTR_0 0x7c0903a6
168 #define MTCTR_11 0x7d6903a6
169 #define MTLR_0 0x7c0803a6
170 #define NOP 0x60000000
171 #define SUB_11_11_12 0x7d6c5850
172
173 /* Offset of tp and dtp pointers from start of TLS block. */
174 #define TP_OFFSET 0x7000
175 #define DTP_OFFSET 0x8000
176
177 /* The value of a defined global symbol. */
178 #define SYM_VAL(SYM) \
179 ((SYM)->root.u.def.section->output_section->vma \
180 + (SYM)->root.u.def.section->output_offset \
181 + (SYM)->root.u.def.value)
182 \f
183 static reloc_howto_type *ppc_elf_howto_table[R_PPC_max];
184
185 static reloc_howto_type ppc_elf_howto_raw[] = {
186 /* This reloc does nothing. */
187 HOWTO (R_PPC_NONE, /* type */
188 0, /* rightshift */
189 3, /* size (0 = byte, 1 = short, 2 = long) */
190 0, /* bitsize */
191 FALSE, /* pc_relative */
192 0, /* bitpos */
193 complain_overflow_dont, /* complain_on_overflow */
194 bfd_elf_generic_reloc, /* special_function */
195 "R_PPC_NONE", /* name */
196 FALSE, /* partial_inplace */
197 0, /* src_mask */
198 0, /* dst_mask */
199 FALSE), /* pcrel_offset */
200
201 /* A standard 32 bit relocation. */
202 HOWTO (R_PPC_ADDR32, /* type */
203 0, /* rightshift */
204 2, /* size (0 = byte, 1 = short, 2 = long) */
205 32, /* bitsize */
206 FALSE, /* pc_relative */
207 0, /* bitpos */
208 complain_overflow_dont, /* complain_on_overflow */
209 bfd_elf_generic_reloc, /* special_function */
210 "R_PPC_ADDR32", /* name */
211 FALSE, /* partial_inplace */
212 0, /* src_mask */
213 0xffffffff, /* dst_mask */
214 FALSE), /* pcrel_offset */
215
216 /* An absolute 26 bit branch; the lower two bits must be zero.
217 FIXME: we don't check that, we just clear them. */
218 HOWTO (R_PPC_ADDR24, /* type */
219 0, /* rightshift */
220 2, /* size (0 = byte, 1 = short, 2 = long) */
221 26, /* bitsize */
222 FALSE, /* pc_relative */
223 0, /* bitpos */
224 complain_overflow_signed, /* complain_on_overflow */
225 bfd_elf_generic_reloc, /* special_function */
226 "R_PPC_ADDR24", /* name */
227 FALSE, /* partial_inplace */
228 0, /* src_mask */
229 0x3fffffc, /* dst_mask */
230 FALSE), /* pcrel_offset */
231
232 /* A standard 16 bit relocation. */
233 HOWTO (R_PPC_ADDR16, /* type */
234 0, /* rightshift */
235 1, /* size (0 = byte, 1 = short, 2 = long) */
236 16, /* bitsize */
237 FALSE, /* pc_relative */
238 0, /* bitpos */
239 complain_overflow_bitfield, /* complain_on_overflow */
240 bfd_elf_generic_reloc, /* special_function */
241 "R_PPC_ADDR16", /* name */
242 FALSE, /* partial_inplace */
243 0, /* src_mask */
244 0xffff, /* dst_mask */
245 FALSE), /* pcrel_offset */
246
247 /* A 16 bit relocation without overflow. */
248 HOWTO (R_PPC_ADDR16_LO, /* type */
249 0, /* rightshift */
250 1, /* size (0 = byte, 1 = short, 2 = long) */
251 16, /* bitsize */
252 FALSE, /* pc_relative */
253 0, /* bitpos */
254 complain_overflow_dont,/* complain_on_overflow */
255 bfd_elf_generic_reloc, /* special_function */
256 "R_PPC_ADDR16_LO", /* name */
257 FALSE, /* partial_inplace */
258 0, /* src_mask */
259 0xffff, /* dst_mask */
260 FALSE), /* pcrel_offset */
261
262 /* The high order 16 bits of an address. */
263 HOWTO (R_PPC_ADDR16_HI, /* type */
264 16, /* rightshift */
265 1, /* size (0 = byte, 1 = short, 2 = long) */
266 16, /* bitsize */
267 FALSE, /* pc_relative */
268 0, /* bitpos */
269 complain_overflow_dont, /* complain_on_overflow */
270 bfd_elf_generic_reloc, /* special_function */
271 "R_PPC_ADDR16_HI", /* name */
272 FALSE, /* partial_inplace */
273 0, /* src_mask */
274 0xffff, /* dst_mask */
275 FALSE), /* pcrel_offset */
276
277 /* The high order 16 bits of an address, plus 1 if the contents of
278 the low 16 bits, treated as a signed number, is negative. */
279 HOWTO (R_PPC_ADDR16_HA, /* type */
280 16, /* rightshift */
281 1, /* size (0 = byte, 1 = short, 2 = long) */
282 16, /* bitsize */
283 FALSE, /* pc_relative */
284 0, /* bitpos */
285 complain_overflow_dont, /* complain_on_overflow */
286 ppc_elf_addr16_ha_reloc, /* special_function */
287 "R_PPC_ADDR16_HA", /* name */
288 FALSE, /* partial_inplace */
289 0, /* src_mask */
290 0xffff, /* dst_mask */
291 FALSE), /* pcrel_offset */
292
293 /* An absolute 16 bit branch; the lower two bits must be zero.
294 FIXME: we don't check that, we just clear them. */
295 HOWTO (R_PPC_ADDR14, /* type */
296 0, /* rightshift */
297 2, /* size (0 = byte, 1 = short, 2 = long) */
298 16, /* bitsize */
299 FALSE, /* pc_relative */
300 0, /* bitpos */
301 complain_overflow_signed, /* complain_on_overflow */
302 bfd_elf_generic_reloc, /* special_function */
303 "R_PPC_ADDR14", /* name */
304 FALSE, /* partial_inplace */
305 0, /* src_mask */
306 0xfffc, /* dst_mask */
307 FALSE), /* pcrel_offset */
308
309 /* An absolute 16 bit branch, for which bit 10 should be set to
310 indicate that the branch is expected to be taken. The lower two
311 bits must be zero. */
312 HOWTO (R_PPC_ADDR14_BRTAKEN, /* type */
313 0, /* rightshift */
314 2, /* size (0 = byte, 1 = short, 2 = long) */
315 16, /* bitsize */
316 FALSE, /* pc_relative */
317 0, /* bitpos */
318 complain_overflow_signed, /* complain_on_overflow */
319 bfd_elf_generic_reloc, /* special_function */
320 "R_PPC_ADDR14_BRTAKEN",/* name */
321 FALSE, /* partial_inplace */
322 0, /* src_mask */
323 0xfffc, /* dst_mask */
324 FALSE), /* pcrel_offset */
325
326 /* An absolute 16 bit branch, for which bit 10 should be set to
327 indicate that the branch is not expected to be taken. The lower
328 two bits must be zero. */
329 HOWTO (R_PPC_ADDR14_BRNTAKEN, /* type */
330 0, /* rightshift */
331 2, /* size (0 = byte, 1 = short, 2 = long) */
332 16, /* bitsize */
333 FALSE, /* pc_relative */
334 0, /* bitpos */
335 complain_overflow_signed, /* complain_on_overflow */
336 bfd_elf_generic_reloc, /* special_function */
337 "R_PPC_ADDR14_BRNTAKEN",/* name */
338 FALSE, /* partial_inplace */
339 0, /* src_mask */
340 0xfffc, /* dst_mask */
341 FALSE), /* pcrel_offset */
342
343 /* A relative 26 bit branch; the lower two bits must be zero. */
344 HOWTO (R_PPC_REL24, /* type */
345 0, /* rightshift */
346 2, /* size (0 = byte, 1 = short, 2 = long) */
347 26, /* bitsize */
348 TRUE, /* pc_relative */
349 0, /* bitpos */
350 complain_overflow_signed, /* complain_on_overflow */
351 bfd_elf_generic_reloc, /* special_function */
352 "R_PPC_REL24", /* name */
353 FALSE, /* partial_inplace */
354 0, /* src_mask */
355 0x3fffffc, /* dst_mask */
356 TRUE), /* pcrel_offset */
357
358 /* A relative 16 bit branch; the lower two bits must be zero. */
359 HOWTO (R_PPC_REL14, /* type */
360 0, /* rightshift */
361 2, /* size (0 = byte, 1 = short, 2 = long) */
362 16, /* bitsize */
363 TRUE, /* pc_relative */
364 0, /* bitpos */
365 complain_overflow_signed, /* complain_on_overflow */
366 bfd_elf_generic_reloc, /* special_function */
367 "R_PPC_REL14", /* name */
368 FALSE, /* partial_inplace */
369 0, /* src_mask */
370 0xfffc, /* dst_mask */
371 TRUE), /* pcrel_offset */
372
373 /* A relative 16 bit branch. Bit 10 should be set to indicate that
374 the branch is expected to be taken. The lower two bits must be
375 zero. */
376 HOWTO (R_PPC_REL14_BRTAKEN, /* type */
377 0, /* rightshift */
378 2, /* size (0 = byte, 1 = short, 2 = long) */
379 16, /* bitsize */
380 TRUE, /* pc_relative */
381 0, /* bitpos */
382 complain_overflow_signed, /* complain_on_overflow */
383 bfd_elf_generic_reloc, /* special_function */
384 "R_PPC_REL14_BRTAKEN", /* name */
385 FALSE, /* partial_inplace */
386 0, /* src_mask */
387 0xfffc, /* dst_mask */
388 TRUE), /* pcrel_offset */
389
390 /* A relative 16 bit branch. Bit 10 should be set to indicate that
391 the branch is not expected to be taken. The lower two bits must
392 be zero. */
393 HOWTO (R_PPC_REL14_BRNTAKEN, /* type */
394 0, /* rightshift */
395 2, /* size (0 = byte, 1 = short, 2 = long) */
396 16, /* bitsize */
397 TRUE, /* pc_relative */
398 0, /* bitpos */
399 complain_overflow_signed, /* complain_on_overflow */
400 bfd_elf_generic_reloc, /* special_function */
401 "R_PPC_REL14_BRNTAKEN",/* name */
402 FALSE, /* partial_inplace */
403 0, /* src_mask */
404 0xfffc, /* dst_mask */
405 TRUE), /* pcrel_offset */
406
407 /* Like R_PPC_ADDR16, but referring to the GOT table entry for the
408 symbol. */
409 HOWTO (R_PPC_GOT16, /* type */
410 0, /* rightshift */
411 1, /* size (0 = byte, 1 = short, 2 = long) */
412 16, /* bitsize */
413 FALSE, /* pc_relative */
414 0, /* bitpos */
415 complain_overflow_signed, /* complain_on_overflow */
416 ppc_elf_unhandled_reloc, /* special_function */
417 "R_PPC_GOT16", /* name */
418 FALSE, /* partial_inplace */
419 0, /* src_mask */
420 0xffff, /* dst_mask */
421 FALSE), /* pcrel_offset */
422
423 /* Like R_PPC_ADDR16_LO, but referring to the GOT table entry for
424 the symbol. */
425 HOWTO (R_PPC_GOT16_LO, /* type */
426 0, /* rightshift */
427 1, /* size (0 = byte, 1 = short, 2 = long) */
428 16, /* bitsize */
429 FALSE, /* pc_relative */
430 0, /* bitpos */
431 complain_overflow_dont, /* complain_on_overflow */
432 ppc_elf_unhandled_reloc, /* special_function */
433 "R_PPC_GOT16_LO", /* name */
434 FALSE, /* partial_inplace */
435 0, /* src_mask */
436 0xffff, /* dst_mask */
437 FALSE), /* pcrel_offset */
438
439 /* Like R_PPC_ADDR16_HI, but referring to the GOT table entry for
440 the symbol. */
441 HOWTO (R_PPC_GOT16_HI, /* type */
442 16, /* rightshift */
443 1, /* size (0 = byte, 1 = short, 2 = long) */
444 16, /* bitsize */
445 FALSE, /* pc_relative */
446 0, /* bitpos */
447 complain_overflow_dont, /* complain_on_overflow */
448 ppc_elf_unhandled_reloc, /* special_function */
449 "R_PPC_GOT16_HI", /* name */
450 FALSE, /* partial_inplace */
451 0, /* src_mask */
452 0xffff, /* dst_mask */
453 FALSE), /* pcrel_offset */
454
455 /* Like R_PPC_ADDR16_HA, but referring to the GOT table entry for
456 the symbol. */
457 HOWTO (R_PPC_GOT16_HA, /* type */
458 16, /* rightshift */
459 1, /* size (0 = byte, 1 = short, 2 = long) */
460 16, /* bitsize */
461 FALSE, /* pc_relative */
462 0, /* bitpos */
463 complain_overflow_dont, /* complain_on_overflow */
464 ppc_elf_unhandled_reloc, /* special_function */
465 "R_PPC_GOT16_HA", /* name */
466 FALSE, /* partial_inplace */
467 0, /* src_mask */
468 0xffff, /* dst_mask */
469 FALSE), /* pcrel_offset */
470
471 /* Like R_PPC_REL24, but referring to the procedure linkage table
472 entry for the symbol. */
473 HOWTO (R_PPC_PLTREL24, /* type */
474 0, /* rightshift */
475 2, /* size (0 = byte, 1 = short, 2 = long) */
476 26, /* bitsize */
477 TRUE, /* pc_relative */
478 0, /* bitpos */
479 complain_overflow_signed, /* complain_on_overflow */
480 ppc_elf_unhandled_reloc, /* special_function */
481 "R_PPC_PLTREL24", /* name */
482 FALSE, /* partial_inplace */
483 0, /* src_mask */
484 0x3fffffc, /* dst_mask */
485 TRUE), /* pcrel_offset */
486
487 /* This is used only by the dynamic linker. The symbol should exist
488 both in the object being run and in some shared library. The
489 dynamic linker copies the data addressed by the symbol from the
490 shared library into the object, because the object being
491 run has to have the data at some particular address. */
492 HOWTO (R_PPC_COPY, /* type */
493 0, /* rightshift */
494 2, /* size (0 = byte, 1 = short, 2 = long) */
495 32, /* bitsize */
496 FALSE, /* pc_relative */
497 0, /* bitpos */
498 complain_overflow_dont, /* complain_on_overflow */
499 ppc_elf_unhandled_reloc, /* special_function */
500 "R_PPC_COPY", /* name */
501 FALSE, /* partial_inplace */
502 0, /* src_mask */
503 0, /* dst_mask */
504 FALSE), /* pcrel_offset */
505
506 /* Like R_PPC_ADDR32, but used when setting global offset table
507 entries. */
508 HOWTO (R_PPC_GLOB_DAT, /* type */
509 0, /* rightshift */
510 2, /* size (0 = byte, 1 = short, 2 = long) */
511 32, /* bitsize */
512 FALSE, /* pc_relative */
513 0, /* bitpos */
514 complain_overflow_dont, /* complain_on_overflow */
515 ppc_elf_unhandled_reloc, /* special_function */
516 "R_PPC_GLOB_DAT", /* name */
517 FALSE, /* partial_inplace */
518 0, /* src_mask */
519 0xffffffff, /* dst_mask */
520 FALSE), /* pcrel_offset */
521
522 /* Marks a procedure linkage table entry for a symbol. */
523 HOWTO (R_PPC_JMP_SLOT, /* type */
524 0, /* rightshift */
525 2, /* size (0 = byte, 1 = short, 2 = long) */
526 32, /* bitsize */
527 FALSE, /* pc_relative */
528 0, /* bitpos */
529 complain_overflow_dont, /* complain_on_overflow */
530 ppc_elf_unhandled_reloc, /* special_function */
531 "R_PPC_JMP_SLOT", /* name */
532 FALSE, /* partial_inplace */
533 0, /* src_mask */
534 0, /* dst_mask */
535 FALSE), /* pcrel_offset */
536
537 /* Used only by the dynamic linker. When the object is run, this
538 longword is set to the load address of the object, plus the
539 addend. */
540 HOWTO (R_PPC_RELATIVE, /* type */
541 0, /* rightshift */
542 2, /* size (0 = byte, 1 = short, 2 = long) */
543 32, /* bitsize */
544 FALSE, /* pc_relative */
545 0, /* bitpos */
546 complain_overflow_dont, /* complain_on_overflow */
547 bfd_elf_generic_reloc, /* special_function */
548 "R_PPC_RELATIVE", /* name */
549 FALSE, /* partial_inplace */
550 0, /* src_mask */
551 0xffffffff, /* dst_mask */
552 FALSE), /* pcrel_offset */
553
554 /* Like R_PPC_REL24, but uses the value of the symbol within the
555 object rather than the final value. Normally used for
556 _GLOBAL_OFFSET_TABLE_. */
557 HOWTO (R_PPC_LOCAL24PC, /* type */
558 0, /* rightshift */
559 2, /* size (0 = byte, 1 = short, 2 = long) */
560 26, /* bitsize */
561 TRUE, /* pc_relative */
562 0, /* bitpos */
563 complain_overflow_signed, /* complain_on_overflow */
564 bfd_elf_generic_reloc, /* special_function */
565 "R_PPC_LOCAL24PC", /* name */
566 FALSE, /* partial_inplace */
567 0, /* src_mask */
568 0x3fffffc, /* dst_mask */
569 TRUE), /* pcrel_offset */
570
571 /* Like R_PPC_ADDR32, but may be unaligned. */
572 HOWTO (R_PPC_UADDR32, /* type */
573 0, /* rightshift */
574 2, /* size (0 = byte, 1 = short, 2 = long) */
575 32, /* bitsize */
576 FALSE, /* pc_relative */
577 0, /* bitpos */
578 complain_overflow_dont, /* complain_on_overflow */
579 bfd_elf_generic_reloc, /* special_function */
580 "R_PPC_UADDR32", /* name */
581 FALSE, /* partial_inplace */
582 0, /* src_mask */
583 0xffffffff, /* dst_mask */
584 FALSE), /* pcrel_offset */
585
586 /* Like R_PPC_ADDR16, but may be unaligned. */
587 HOWTO (R_PPC_UADDR16, /* type */
588 0, /* rightshift */
589 1, /* size (0 = byte, 1 = short, 2 = long) */
590 16, /* bitsize */
591 FALSE, /* pc_relative */
592 0, /* bitpos */
593 complain_overflow_bitfield, /* complain_on_overflow */
594 bfd_elf_generic_reloc, /* special_function */
595 "R_PPC_UADDR16", /* name */
596 FALSE, /* partial_inplace */
597 0, /* src_mask */
598 0xffff, /* dst_mask */
599 FALSE), /* pcrel_offset */
600
601 /* 32-bit PC relative */
602 HOWTO (R_PPC_REL32, /* type */
603 0, /* rightshift */
604 2, /* size (0 = byte, 1 = short, 2 = long) */
605 32, /* bitsize */
606 TRUE, /* pc_relative */
607 0, /* bitpos */
608 complain_overflow_dont, /* complain_on_overflow */
609 bfd_elf_generic_reloc, /* special_function */
610 "R_PPC_REL32", /* name */
611 FALSE, /* partial_inplace */
612 0, /* src_mask */
613 0xffffffff, /* dst_mask */
614 TRUE), /* pcrel_offset */
615
616 /* 32-bit relocation to the symbol's procedure linkage table.
617 FIXME: not supported. */
618 HOWTO (R_PPC_PLT32, /* type */
619 0, /* rightshift */
620 2, /* size (0 = byte, 1 = short, 2 = long) */
621 32, /* bitsize */
622 FALSE, /* pc_relative */
623 0, /* bitpos */
624 complain_overflow_dont, /* complain_on_overflow */
625 ppc_elf_unhandled_reloc, /* special_function */
626 "R_PPC_PLT32", /* name */
627 FALSE, /* partial_inplace */
628 0, /* src_mask */
629 0, /* dst_mask */
630 FALSE), /* pcrel_offset */
631
632 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
633 FIXME: not supported. */
634 HOWTO (R_PPC_PLTREL32, /* type */
635 0, /* rightshift */
636 2, /* size (0 = byte, 1 = short, 2 = long) */
637 32, /* bitsize */
638 TRUE, /* pc_relative */
639 0, /* bitpos */
640 complain_overflow_dont, /* complain_on_overflow */
641 ppc_elf_unhandled_reloc, /* special_function */
642 "R_PPC_PLTREL32", /* name */
643 FALSE, /* partial_inplace */
644 0, /* src_mask */
645 0, /* dst_mask */
646 TRUE), /* pcrel_offset */
647
648 /* Like R_PPC_ADDR16_LO, but referring to the PLT table entry for
649 the symbol. */
650 HOWTO (R_PPC_PLT16_LO, /* type */
651 0, /* rightshift */
652 1, /* size (0 = byte, 1 = short, 2 = long) */
653 16, /* bitsize */
654 FALSE, /* pc_relative */
655 0, /* bitpos */
656 complain_overflow_dont, /* complain_on_overflow */
657 ppc_elf_unhandled_reloc, /* special_function */
658 "R_PPC_PLT16_LO", /* name */
659 FALSE, /* partial_inplace */
660 0, /* src_mask */
661 0xffff, /* dst_mask */
662 FALSE), /* pcrel_offset */
663
664 /* Like R_PPC_ADDR16_HI, but referring to the PLT table entry for
665 the symbol. */
666 HOWTO (R_PPC_PLT16_HI, /* type */
667 16, /* rightshift */
668 1, /* size (0 = byte, 1 = short, 2 = long) */
669 16, /* bitsize */
670 FALSE, /* pc_relative */
671 0, /* bitpos */
672 complain_overflow_dont, /* complain_on_overflow */
673 ppc_elf_unhandled_reloc, /* special_function */
674 "R_PPC_PLT16_HI", /* name */
675 FALSE, /* partial_inplace */
676 0, /* src_mask */
677 0xffff, /* dst_mask */
678 FALSE), /* pcrel_offset */
679
680 /* Like R_PPC_ADDR16_HA, but referring to the PLT table entry for
681 the symbol. */
682 HOWTO (R_PPC_PLT16_HA, /* type */
683 16, /* rightshift */
684 1, /* size (0 = byte, 1 = short, 2 = long) */
685 16, /* bitsize */
686 FALSE, /* pc_relative */
687 0, /* bitpos */
688 complain_overflow_dont, /* complain_on_overflow */
689 ppc_elf_unhandled_reloc, /* special_function */
690 "R_PPC_PLT16_HA", /* name */
691 FALSE, /* partial_inplace */
692 0, /* src_mask */
693 0xffff, /* dst_mask */
694 FALSE), /* pcrel_offset */
695
696 /* A sign-extended 16 bit value relative to _SDA_BASE_, for use with
697 small data items. */
698 HOWTO (R_PPC_SDAREL16, /* type */
699 0, /* rightshift */
700 1, /* size (0 = byte, 1 = short, 2 = long) */
701 16, /* bitsize */
702 FALSE, /* pc_relative */
703 0, /* bitpos */
704 complain_overflow_signed, /* complain_on_overflow */
705 ppc_elf_unhandled_reloc, /* special_function */
706 "R_PPC_SDAREL16", /* name */
707 FALSE, /* partial_inplace */
708 0, /* src_mask */
709 0xffff, /* dst_mask */
710 FALSE), /* pcrel_offset */
711
712 /* 16-bit section relative relocation. */
713 HOWTO (R_PPC_SECTOFF, /* type */
714 0, /* rightshift */
715 1, /* size (0 = byte, 1 = short, 2 = long) */
716 16, /* bitsize */
717 FALSE, /* pc_relative */
718 0, /* bitpos */
719 complain_overflow_signed, /* complain_on_overflow */
720 ppc_elf_unhandled_reloc, /* special_function */
721 "R_PPC_SECTOFF", /* name */
722 FALSE, /* partial_inplace */
723 0, /* src_mask */
724 0xffff, /* dst_mask */
725 FALSE), /* pcrel_offset */
726
727 /* 16-bit lower half section relative relocation. */
728 HOWTO (R_PPC_SECTOFF_LO, /* type */
729 0, /* rightshift */
730 1, /* size (0 = byte, 1 = short, 2 = long) */
731 16, /* bitsize */
732 FALSE, /* pc_relative */
733 0, /* bitpos */
734 complain_overflow_dont, /* complain_on_overflow */
735 ppc_elf_unhandled_reloc, /* special_function */
736 "R_PPC_SECTOFF_LO", /* name */
737 FALSE, /* partial_inplace */
738 0, /* src_mask */
739 0xffff, /* dst_mask */
740 FALSE), /* pcrel_offset */
741
742 /* 16-bit upper half section relative relocation. */
743 HOWTO (R_PPC_SECTOFF_HI, /* type */
744 16, /* rightshift */
745 1, /* size (0 = byte, 1 = short, 2 = long) */
746 16, /* bitsize */
747 FALSE, /* pc_relative */
748 0, /* bitpos */
749 complain_overflow_dont, /* complain_on_overflow */
750 ppc_elf_unhandled_reloc, /* special_function */
751 "R_PPC_SECTOFF_HI", /* name */
752 FALSE, /* partial_inplace */
753 0, /* src_mask */
754 0xffff, /* dst_mask */
755 FALSE), /* pcrel_offset */
756
757 /* 16-bit upper half adjusted section relative relocation. */
758 HOWTO (R_PPC_SECTOFF_HA, /* type */
759 16, /* rightshift */
760 1, /* size (0 = byte, 1 = short, 2 = long) */
761 16, /* bitsize */
762 FALSE, /* pc_relative */
763 0, /* bitpos */
764 complain_overflow_dont, /* complain_on_overflow */
765 ppc_elf_unhandled_reloc, /* special_function */
766 "R_PPC_SECTOFF_HA", /* name */
767 FALSE, /* partial_inplace */
768 0, /* src_mask */
769 0xffff, /* dst_mask */
770 FALSE), /* pcrel_offset */
771
772 /* Marker relocs for TLS. */
773 HOWTO (R_PPC_TLS,
774 0, /* rightshift */
775 2, /* size (0 = byte, 1 = short, 2 = long) */
776 32, /* bitsize */
777 FALSE, /* pc_relative */
778 0, /* bitpos */
779 complain_overflow_dont, /* complain_on_overflow */
780 bfd_elf_generic_reloc, /* special_function */
781 "R_PPC_TLS", /* name */
782 FALSE, /* partial_inplace */
783 0, /* src_mask */
784 0, /* dst_mask */
785 FALSE), /* pcrel_offset */
786
787 HOWTO (R_PPC_TLSGD,
788 0, /* rightshift */
789 2, /* size (0 = byte, 1 = short, 2 = long) */
790 32, /* bitsize */
791 FALSE, /* pc_relative */
792 0, /* bitpos */
793 complain_overflow_dont, /* complain_on_overflow */
794 bfd_elf_generic_reloc, /* special_function */
795 "R_PPC_TLSGD", /* name */
796 FALSE, /* partial_inplace */
797 0, /* src_mask */
798 0, /* dst_mask */
799 FALSE), /* pcrel_offset */
800
801 HOWTO (R_PPC_TLSLD,
802 0, /* rightshift */
803 2, /* size (0 = byte, 1 = short, 2 = long) */
804 32, /* bitsize */
805 FALSE, /* pc_relative */
806 0, /* bitpos */
807 complain_overflow_dont, /* complain_on_overflow */
808 bfd_elf_generic_reloc, /* special_function */
809 "R_PPC_TLSLD", /* name */
810 FALSE, /* partial_inplace */
811 0, /* src_mask */
812 0, /* dst_mask */
813 FALSE), /* pcrel_offset */
814
815 /* Computes the load module index of the load module that contains the
816 definition of its TLS sym. */
817 HOWTO (R_PPC_DTPMOD32,
818 0, /* rightshift */
819 2, /* size (0 = byte, 1 = short, 2 = long) */
820 32, /* bitsize */
821 FALSE, /* pc_relative */
822 0, /* bitpos */
823 complain_overflow_dont, /* complain_on_overflow */
824 ppc_elf_unhandled_reloc, /* special_function */
825 "R_PPC_DTPMOD32", /* name */
826 FALSE, /* partial_inplace */
827 0, /* src_mask */
828 0xffffffff, /* dst_mask */
829 FALSE), /* pcrel_offset */
830
831 /* Computes a dtv-relative displacement, the difference between the value
832 of sym+add and the base address of the thread-local storage block that
833 contains the definition of sym, minus 0x8000. */
834 HOWTO (R_PPC_DTPREL32,
835 0, /* rightshift */
836 2, /* size (0 = byte, 1 = short, 2 = long) */
837 32, /* bitsize */
838 FALSE, /* pc_relative */
839 0, /* bitpos */
840 complain_overflow_dont, /* complain_on_overflow */
841 ppc_elf_unhandled_reloc, /* special_function */
842 "R_PPC_DTPREL32", /* name */
843 FALSE, /* partial_inplace */
844 0, /* src_mask */
845 0xffffffff, /* dst_mask */
846 FALSE), /* pcrel_offset */
847
848 /* A 16 bit dtprel reloc. */
849 HOWTO (R_PPC_DTPREL16,
850 0, /* rightshift */
851 1, /* size (0 = byte, 1 = short, 2 = long) */
852 16, /* bitsize */
853 FALSE, /* pc_relative */
854 0, /* bitpos */
855 complain_overflow_signed, /* complain_on_overflow */
856 ppc_elf_unhandled_reloc, /* special_function */
857 "R_PPC_DTPREL16", /* name */
858 FALSE, /* partial_inplace */
859 0, /* src_mask */
860 0xffff, /* dst_mask */
861 FALSE), /* pcrel_offset */
862
863 /* Like DTPREL16, but no overflow. */
864 HOWTO (R_PPC_DTPREL16_LO,
865 0, /* rightshift */
866 1, /* size (0 = byte, 1 = short, 2 = long) */
867 16, /* bitsize */
868 FALSE, /* pc_relative */
869 0, /* bitpos */
870 complain_overflow_dont, /* complain_on_overflow */
871 ppc_elf_unhandled_reloc, /* special_function */
872 "R_PPC_DTPREL16_LO", /* name */
873 FALSE, /* partial_inplace */
874 0, /* src_mask */
875 0xffff, /* dst_mask */
876 FALSE), /* pcrel_offset */
877
878 /* Like DTPREL16_LO, but next higher group of 16 bits. */
879 HOWTO (R_PPC_DTPREL16_HI,
880 16, /* rightshift */
881 1, /* size (0 = byte, 1 = short, 2 = long) */
882 16, /* bitsize */
883 FALSE, /* pc_relative */
884 0, /* bitpos */
885 complain_overflow_dont, /* complain_on_overflow */
886 ppc_elf_unhandled_reloc, /* special_function */
887 "R_PPC_DTPREL16_HI", /* name */
888 FALSE, /* partial_inplace */
889 0, /* src_mask */
890 0xffff, /* dst_mask */
891 FALSE), /* pcrel_offset */
892
893 /* Like DTPREL16_HI, but adjust for low 16 bits. */
894 HOWTO (R_PPC_DTPREL16_HA,
895 16, /* rightshift */
896 1, /* size (0 = byte, 1 = short, 2 = long) */
897 16, /* bitsize */
898 FALSE, /* pc_relative */
899 0, /* bitpos */
900 complain_overflow_dont, /* complain_on_overflow */
901 ppc_elf_unhandled_reloc, /* special_function */
902 "R_PPC_DTPREL16_HA", /* name */
903 FALSE, /* partial_inplace */
904 0, /* src_mask */
905 0xffff, /* dst_mask */
906 FALSE), /* pcrel_offset */
907
908 /* Computes a tp-relative displacement, the difference between the value of
909 sym+add and the value of the thread pointer (r13). */
910 HOWTO (R_PPC_TPREL32,
911 0, /* rightshift */
912 2, /* size (0 = byte, 1 = short, 2 = long) */
913 32, /* bitsize */
914 FALSE, /* pc_relative */
915 0, /* bitpos */
916 complain_overflow_dont, /* complain_on_overflow */
917 ppc_elf_unhandled_reloc, /* special_function */
918 "R_PPC_TPREL32", /* name */
919 FALSE, /* partial_inplace */
920 0, /* src_mask */
921 0xffffffff, /* dst_mask */
922 FALSE), /* pcrel_offset */
923
924 /* A 16 bit tprel reloc. */
925 HOWTO (R_PPC_TPREL16,
926 0, /* rightshift */
927 1, /* size (0 = byte, 1 = short, 2 = long) */
928 16, /* bitsize */
929 FALSE, /* pc_relative */
930 0, /* bitpos */
931 complain_overflow_signed, /* complain_on_overflow */
932 ppc_elf_unhandled_reloc, /* special_function */
933 "R_PPC_TPREL16", /* name */
934 FALSE, /* partial_inplace */
935 0, /* src_mask */
936 0xffff, /* dst_mask */
937 FALSE), /* pcrel_offset */
938
939 /* Like TPREL16, but no overflow. */
940 HOWTO (R_PPC_TPREL16_LO,
941 0, /* rightshift */
942 1, /* size (0 = byte, 1 = short, 2 = long) */
943 16, /* bitsize */
944 FALSE, /* pc_relative */
945 0, /* bitpos */
946 complain_overflow_dont, /* complain_on_overflow */
947 ppc_elf_unhandled_reloc, /* special_function */
948 "R_PPC_TPREL16_LO", /* name */
949 FALSE, /* partial_inplace */
950 0, /* src_mask */
951 0xffff, /* dst_mask */
952 FALSE), /* pcrel_offset */
953
954 /* Like TPREL16_LO, but next higher group of 16 bits. */
955 HOWTO (R_PPC_TPREL16_HI,
956 16, /* rightshift */
957 1, /* size (0 = byte, 1 = short, 2 = long) */
958 16, /* bitsize */
959 FALSE, /* pc_relative */
960 0, /* bitpos */
961 complain_overflow_dont, /* complain_on_overflow */
962 ppc_elf_unhandled_reloc, /* special_function */
963 "R_PPC_TPREL16_HI", /* name */
964 FALSE, /* partial_inplace */
965 0, /* src_mask */
966 0xffff, /* dst_mask */
967 FALSE), /* pcrel_offset */
968
969 /* Like TPREL16_HI, but adjust for low 16 bits. */
970 HOWTO (R_PPC_TPREL16_HA,
971 16, /* rightshift */
972 1, /* size (0 = byte, 1 = short, 2 = long) */
973 16, /* bitsize */
974 FALSE, /* pc_relative */
975 0, /* bitpos */
976 complain_overflow_dont, /* complain_on_overflow */
977 ppc_elf_unhandled_reloc, /* special_function */
978 "R_PPC_TPREL16_HA", /* name */
979 FALSE, /* partial_inplace */
980 0, /* src_mask */
981 0xffff, /* dst_mask */
982 FALSE), /* pcrel_offset */
983
984 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
985 with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
986 to the first entry. */
987 HOWTO (R_PPC_GOT_TLSGD16,
988 0, /* rightshift */
989 1, /* size (0 = byte, 1 = short, 2 = long) */
990 16, /* bitsize */
991 FALSE, /* pc_relative */
992 0, /* bitpos */
993 complain_overflow_signed, /* complain_on_overflow */
994 ppc_elf_unhandled_reloc, /* special_function */
995 "R_PPC_GOT_TLSGD16", /* name */
996 FALSE, /* partial_inplace */
997 0, /* src_mask */
998 0xffff, /* dst_mask */
999 FALSE), /* pcrel_offset */
1000
1001 /* Like GOT_TLSGD16, but no overflow. */
1002 HOWTO (R_PPC_GOT_TLSGD16_LO,
1003 0, /* rightshift */
1004 1, /* size (0 = byte, 1 = short, 2 = long) */
1005 16, /* bitsize */
1006 FALSE, /* pc_relative */
1007 0, /* bitpos */
1008 complain_overflow_dont, /* complain_on_overflow */
1009 ppc_elf_unhandled_reloc, /* special_function */
1010 "R_PPC_GOT_TLSGD16_LO", /* name */
1011 FALSE, /* partial_inplace */
1012 0, /* src_mask */
1013 0xffff, /* dst_mask */
1014 FALSE), /* pcrel_offset */
1015
1016 /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
1017 HOWTO (R_PPC_GOT_TLSGD16_HI,
1018 16, /* rightshift */
1019 1, /* size (0 = byte, 1 = short, 2 = long) */
1020 16, /* bitsize */
1021 FALSE, /* pc_relative */
1022 0, /* bitpos */
1023 complain_overflow_dont, /* complain_on_overflow */
1024 ppc_elf_unhandled_reloc, /* special_function */
1025 "R_PPC_GOT_TLSGD16_HI", /* name */
1026 FALSE, /* partial_inplace */
1027 0, /* src_mask */
1028 0xffff, /* dst_mask */
1029 FALSE), /* pcrel_offset */
1030
1031 /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
1032 HOWTO (R_PPC_GOT_TLSGD16_HA,
1033 16, /* rightshift */
1034 1, /* size (0 = byte, 1 = short, 2 = long) */
1035 16, /* bitsize */
1036 FALSE, /* pc_relative */
1037 0, /* bitpos */
1038 complain_overflow_dont, /* complain_on_overflow */
1039 ppc_elf_unhandled_reloc, /* special_function */
1040 "R_PPC_GOT_TLSGD16_HA", /* name */
1041 FALSE, /* partial_inplace */
1042 0, /* src_mask */
1043 0xffff, /* dst_mask */
1044 FALSE), /* pcrel_offset */
1045
1046 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1047 with values (sym+add)@dtpmod and zero, and computes the offset to the
1048 first entry. */
1049 HOWTO (R_PPC_GOT_TLSLD16,
1050 0, /* rightshift */
1051 1, /* size (0 = byte, 1 = short, 2 = long) */
1052 16, /* bitsize */
1053 FALSE, /* pc_relative */
1054 0, /* bitpos */
1055 complain_overflow_signed, /* complain_on_overflow */
1056 ppc_elf_unhandled_reloc, /* special_function */
1057 "R_PPC_GOT_TLSLD16", /* name */
1058 FALSE, /* partial_inplace */
1059 0, /* src_mask */
1060 0xffff, /* dst_mask */
1061 FALSE), /* pcrel_offset */
1062
1063 /* Like GOT_TLSLD16, but no overflow. */
1064 HOWTO (R_PPC_GOT_TLSLD16_LO,
1065 0, /* rightshift */
1066 1, /* size (0 = byte, 1 = short, 2 = long) */
1067 16, /* bitsize */
1068 FALSE, /* pc_relative */
1069 0, /* bitpos */
1070 complain_overflow_dont, /* complain_on_overflow */
1071 ppc_elf_unhandled_reloc, /* special_function */
1072 "R_PPC_GOT_TLSLD16_LO", /* name */
1073 FALSE, /* partial_inplace */
1074 0, /* src_mask */
1075 0xffff, /* dst_mask */
1076 FALSE), /* pcrel_offset */
1077
1078 /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
1079 HOWTO (R_PPC_GOT_TLSLD16_HI,
1080 16, /* rightshift */
1081 1, /* size (0 = byte, 1 = short, 2 = long) */
1082 16, /* bitsize */
1083 FALSE, /* pc_relative */
1084 0, /* bitpos */
1085 complain_overflow_dont, /* complain_on_overflow */
1086 ppc_elf_unhandled_reloc, /* special_function */
1087 "R_PPC_GOT_TLSLD16_HI", /* name */
1088 FALSE, /* partial_inplace */
1089 0, /* src_mask */
1090 0xffff, /* dst_mask */
1091 FALSE), /* pcrel_offset */
1092
1093 /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
1094 HOWTO (R_PPC_GOT_TLSLD16_HA,
1095 16, /* rightshift */
1096 1, /* size (0 = byte, 1 = short, 2 = long) */
1097 16, /* bitsize */
1098 FALSE, /* pc_relative */
1099 0, /* bitpos */
1100 complain_overflow_dont, /* complain_on_overflow */
1101 ppc_elf_unhandled_reloc, /* special_function */
1102 "R_PPC_GOT_TLSLD16_HA", /* name */
1103 FALSE, /* partial_inplace */
1104 0, /* src_mask */
1105 0xffff, /* dst_mask */
1106 FALSE), /* pcrel_offset */
1107
1108 /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
1109 the offset to the entry. */
1110 HOWTO (R_PPC_GOT_DTPREL16,
1111 0, /* rightshift */
1112 1, /* size (0 = byte, 1 = short, 2 = long) */
1113 16, /* bitsize */
1114 FALSE, /* pc_relative */
1115 0, /* bitpos */
1116 complain_overflow_signed, /* complain_on_overflow */
1117 ppc_elf_unhandled_reloc, /* special_function */
1118 "R_PPC_GOT_DTPREL16", /* name */
1119 FALSE, /* partial_inplace */
1120 0, /* src_mask */
1121 0xffff, /* dst_mask */
1122 FALSE), /* pcrel_offset */
1123
1124 /* Like GOT_DTPREL16, but no overflow. */
1125 HOWTO (R_PPC_GOT_DTPREL16_LO,
1126 0, /* rightshift */
1127 1, /* size (0 = byte, 1 = short, 2 = long) */
1128 16, /* bitsize */
1129 FALSE, /* pc_relative */
1130 0, /* bitpos */
1131 complain_overflow_dont, /* complain_on_overflow */
1132 ppc_elf_unhandled_reloc, /* special_function */
1133 "R_PPC_GOT_DTPREL16_LO", /* name */
1134 FALSE, /* partial_inplace */
1135 0, /* src_mask */
1136 0xffff, /* dst_mask */
1137 FALSE), /* pcrel_offset */
1138
1139 /* Like GOT_DTPREL16_LO, but next higher group of 16 bits. */
1140 HOWTO (R_PPC_GOT_DTPREL16_HI,
1141 16, /* rightshift */
1142 1, /* size (0 = byte, 1 = short, 2 = long) */
1143 16, /* bitsize */
1144 FALSE, /* pc_relative */
1145 0, /* bitpos */
1146 complain_overflow_dont, /* complain_on_overflow */
1147 ppc_elf_unhandled_reloc, /* special_function */
1148 "R_PPC_GOT_DTPREL16_HI", /* name */
1149 FALSE, /* partial_inplace */
1150 0, /* src_mask */
1151 0xffff, /* dst_mask */
1152 FALSE), /* pcrel_offset */
1153
1154 /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
1155 HOWTO (R_PPC_GOT_DTPREL16_HA,
1156 16, /* rightshift */
1157 1, /* size (0 = byte, 1 = short, 2 = long) */
1158 16, /* bitsize */
1159 FALSE, /* pc_relative */
1160 0, /* bitpos */
1161 complain_overflow_dont, /* complain_on_overflow */
1162 ppc_elf_unhandled_reloc, /* special_function */
1163 "R_PPC_GOT_DTPREL16_HA", /* name */
1164 FALSE, /* partial_inplace */
1165 0, /* src_mask */
1166 0xffff, /* dst_mask */
1167 FALSE), /* pcrel_offset */
1168
1169 /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
1170 offset to the entry. */
1171 HOWTO (R_PPC_GOT_TPREL16,
1172 0, /* rightshift */
1173 1, /* size (0 = byte, 1 = short, 2 = long) */
1174 16, /* bitsize */
1175 FALSE, /* pc_relative */
1176 0, /* bitpos */
1177 complain_overflow_signed, /* complain_on_overflow */
1178 ppc_elf_unhandled_reloc, /* special_function */
1179 "R_PPC_GOT_TPREL16", /* name */
1180 FALSE, /* partial_inplace */
1181 0, /* src_mask */
1182 0xffff, /* dst_mask */
1183 FALSE), /* pcrel_offset */
1184
1185 /* Like GOT_TPREL16, but no overflow. */
1186 HOWTO (R_PPC_GOT_TPREL16_LO,
1187 0, /* rightshift */
1188 1, /* size (0 = byte, 1 = short, 2 = long) */
1189 16, /* bitsize */
1190 FALSE, /* pc_relative */
1191 0, /* bitpos */
1192 complain_overflow_dont, /* complain_on_overflow */
1193 ppc_elf_unhandled_reloc, /* special_function */
1194 "R_PPC_GOT_TPREL16_LO", /* name */
1195 FALSE, /* partial_inplace */
1196 0, /* src_mask */
1197 0xffff, /* dst_mask */
1198 FALSE), /* pcrel_offset */
1199
1200 /* Like GOT_TPREL16_LO, but next higher group of 16 bits. */
1201 HOWTO (R_PPC_GOT_TPREL16_HI,
1202 16, /* rightshift */
1203 1, /* size (0 = byte, 1 = short, 2 = long) */
1204 16, /* bitsize */
1205 FALSE, /* pc_relative */
1206 0, /* bitpos */
1207 complain_overflow_dont, /* complain_on_overflow */
1208 ppc_elf_unhandled_reloc, /* special_function */
1209 "R_PPC_GOT_TPREL16_HI", /* name */
1210 FALSE, /* partial_inplace */
1211 0, /* src_mask */
1212 0xffff, /* dst_mask */
1213 FALSE), /* pcrel_offset */
1214
1215 /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
1216 HOWTO (R_PPC_GOT_TPREL16_HA,
1217 16, /* rightshift */
1218 1, /* size (0 = byte, 1 = short, 2 = long) */
1219 16, /* bitsize */
1220 FALSE, /* pc_relative */
1221 0, /* bitpos */
1222 complain_overflow_dont, /* complain_on_overflow */
1223 ppc_elf_unhandled_reloc, /* special_function */
1224 "R_PPC_GOT_TPREL16_HA", /* name */
1225 FALSE, /* partial_inplace */
1226 0, /* src_mask */
1227 0xffff, /* dst_mask */
1228 FALSE), /* pcrel_offset */
1229
1230 /* The remaining relocs are from the Embedded ELF ABI, and are not
1231 in the SVR4 ELF ABI. */
1232
1233 /* 32 bit value resulting from the addend minus the symbol. */
1234 HOWTO (R_PPC_EMB_NADDR32, /* type */
1235 0, /* rightshift */
1236 2, /* size (0 = byte, 1 = short, 2 = long) */
1237 32, /* bitsize */
1238 FALSE, /* pc_relative */
1239 0, /* bitpos */
1240 complain_overflow_dont, /* complain_on_overflow */
1241 ppc_elf_unhandled_reloc, /* special_function */
1242 "R_PPC_EMB_NADDR32", /* name */
1243 FALSE, /* partial_inplace */
1244 0, /* src_mask */
1245 0xffffffff, /* dst_mask */
1246 FALSE), /* pcrel_offset */
1247
1248 /* 16 bit value resulting from the addend minus the symbol. */
1249 HOWTO (R_PPC_EMB_NADDR16, /* type */
1250 0, /* rightshift */
1251 1, /* size (0 = byte, 1 = short, 2 = long) */
1252 16, /* bitsize */
1253 FALSE, /* pc_relative */
1254 0, /* bitpos */
1255 complain_overflow_signed, /* complain_on_overflow */
1256 ppc_elf_unhandled_reloc, /* special_function */
1257 "R_PPC_EMB_NADDR16", /* name */
1258 FALSE, /* partial_inplace */
1259 0, /* src_mask */
1260 0xffff, /* dst_mask */
1261 FALSE), /* pcrel_offset */
1262
1263 /* 16 bit value resulting from the addend minus the symbol. */
1264 HOWTO (R_PPC_EMB_NADDR16_LO, /* type */
1265 0, /* rightshift */
1266 1, /* size (0 = byte, 1 = short, 2 = long) */
1267 16, /* bitsize */
1268 FALSE, /* pc_relative */
1269 0, /* bitpos */
1270 complain_overflow_dont,/* complain_on_overflow */
1271 ppc_elf_unhandled_reloc, /* special_function */
1272 "R_PPC_EMB_ADDR16_LO", /* name */
1273 FALSE, /* partial_inplace */
1274 0, /* src_mask */
1275 0xffff, /* dst_mask */
1276 FALSE), /* pcrel_offset */
1277
1278 /* The high order 16 bits of the addend minus the symbol. */
1279 HOWTO (R_PPC_EMB_NADDR16_HI, /* type */
1280 16, /* rightshift */
1281 1, /* size (0 = byte, 1 = short, 2 = long) */
1282 16, /* bitsize */
1283 FALSE, /* pc_relative */
1284 0, /* bitpos */
1285 complain_overflow_dont, /* complain_on_overflow */
1286 ppc_elf_unhandled_reloc, /* special_function */
1287 "R_PPC_EMB_NADDR16_HI", /* name */
1288 FALSE, /* partial_inplace */
1289 0, /* src_mask */
1290 0xffff, /* dst_mask */
1291 FALSE), /* pcrel_offset */
1292
1293 /* The high order 16 bits of the result of the addend minus the address,
1294 plus 1 if the contents of the low 16 bits, treated as a signed number,
1295 is negative. */
1296 HOWTO (R_PPC_EMB_NADDR16_HA, /* type */
1297 16, /* rightshift */
1298 1, /* size (0 = byte, 1 = short, 2 = long) */
1299 16, /* bitsize */
1300 FALSE, /* pc_relative */
1301 0, /* bitpos */
1302 complain_overflow_dont, /* complain_on_overflow */
1303 ppc_elf_unhandled_reloc, /* special_function */
1304 "R_PPC_EMB_NADDR16_HA", /* name */
1305 FALSE, /* partial_inplace */
1306 0, /* src_mask */
1307 0xffff, /* dst_mask */
1308 FALSE), /* pcrel_offset */
1309
1310 /* 16 bit value resulting from allocating a 4 byte word to hold an
1311 address in the .sdata section, and returning the offset from
1312 _SDA_BASE_ for that relocation. */
1313 HOWTO (R_PPC_EMB_SDAI16, /* type */
1314 0, /* rightshift */
1315 1, /* size (0 = byte, 1 = short, 2 = long) */
1316 16, /* bitsize */
1317 FALSE, /* pc_relative */
1318 0, /* bitpos */
1319 complain_overflow_signed, /* complain_on_overflow */
1320 ppc_elf_unhandled_reloc, /* special_function */
1321 "R_PPC_EMB_SDAI16", /* name */
1322 FALSE, /* partial_inplace */
1323 0, /* src_mask */
1324 0xffff, /* dst_mask */
1325 FALSE), /* pcrel_offset */
1326
1327 /* 16 bit value resulting from allocating a 4 byte word to hold an
1328 address in the .sdata2 section, and returning the offset from
1329 _SDA2_BASE_ for that relocation. */
1330 HOWTO (R_PPC_EMB_SDA2I16, /* type */
1331 0, /* rightshift */
1332 1, /* size (0 = byte, 1 = short, 2 = long) */
1333 16, /* bitsize */
1334 FALSE, /* pc_relative */
1335 0, /* bitpos */
1336 complain_overflow_signed, /* complain_on_overflow */
1337 ppc_elf_unhandled_reloc, /* special_function */
1338 "R_PPC_EMB_SDA2I16", /* name */
1339 FALSE, /* partial_inplace */
1340 0, /* src_mask */
1341 0xffff, /* dst_mask */
1342 FALSE), /* pcrel_offset */
1343
1344 /* A sign-extended 16 bit value relative to _SDA2_BASE_, for use with
1345 small data items. */
1346 HOWTO (R_PPC_EMB_SDA2REL, /* type */
1347 0, /* rightshift */
1348 1, /* size (0 = byte, 1 = short, 2 = long) */
1349 16, /* bitsize */
1350 FALSE, /* pc_relative */
1351 0, /* bitpos */
1352 complain_overflow_signed, /* complain_on_overflow */
1353 ppc_elf_unhandled_reloc, /* special_function */
1354 "R_PPC_EMB_SDA2REL", /* name */
1355 FALSE, /* partial_inplace */
1356 0, /* src_mask */
1357 0xffff, /* dst_mask */
1358 FALSE), /* pcrel_offset */
1359
1360 /* Relocate against either _SDA_BASE_ or _SDA2_BASE_, filling in the 16 bit
1361 signed offset from the appropriate base, and filling in the register
1362 field with the appropriate register (0, 2, or 13). */
1363 HOWTO (R_PPC_EMB_SDA21, /* type */
1364 0, /* rightshift */
1365 2, /* size (0 = byte, 1 = short, 2 = long) */
1366 16, /* bitsize */
1367 FALSE, /* pc_relative */
1368 0, /* bitpos */
1369 complain_overflow_signed, /* complain_on_overflow */
1370 ppc_elf_unhandled_reloc, /* special_function */
1371 "R_PPC_EMB_SDA21", /* name */
1372 FALSE, /* partial_inplace */
1373 0, /* src_mask */
1374 0xffff, /* dst_mask */
1375 FALSE), /* pcrel_offset */
1376
1377 /* Relocation not handled: R_PPC_EMB_MRKREF */
1378 /* Relocation not handled: R_PPC_EMB_RELSEC16 */
1379 /* Relocation not handled: R_PPC_EMB_RELST_LO */
1380 /* Relocation not handled: R_PPC_EMB_RELST_HI */
1381 /* Relocation not handled: R_PPC_EMB_RELST_HA */
1382 /* Relocation not handled: R_PPC_EMB_BIT_FLD */
1383
1384 /* PC relative relocation against either _SDA_BASE_ or _SDA2_BASE_, filling
1385 in the 16 bit signed offset from the appropriate base, and filling in the
1386 register field with the appropriate register (0, 2, or 13). */
1387 HOWTO (R_PPC_EMB_RELSDA, /* type */
1388 0, /* rightshift */
1389 1, /* size (0 = byte, 1 = short, 2 = long) */
1390 16, /* bitsize */
1391 FALSE, /* pc_relative */
1392 0, /* bitpos */
1393 complain_overflow_signed, /* complain_on_overflow */
1394 ppc_elf_unhandled_reloc, /* special_function */
1395 "R_PPC_EMB_RELSDA", /* name */
1396 FALSE, /* partial_inplace */
1397 0, /* src_mask */
1398 0xffff, /* dst_mask */
1399 FALSE), /* pcrel_offset */
1400
1401 /* A relative 8 bit branch. */
1402 HOWTO (R_PPC_VLE_REL8, /* type */
1403 1, /* rightshift */
1404 1, /* size (0 = byte, 1 = short, 2 = long) */
1405 8, /* bitsize */
1406 TRUE, /* pc_relative */
1407 0, /* bitpos */
1408 complain_overflow_signed, /* complain_on_overflow */
1409 bfd_elf_generic_reloc, /* special_function */
1410 "R_PPC_VLE_REL8", /* name */
1411 FALSE, /* partial_inplace */
1412 0, /* src_mask */
1413 0xff, /* dst_mask */
1414 TRUE), /* pcrel_offset */
1415
1416 /* A relative 15 bit branch. */
1417 HOWTO (R_PPC_VLE_REL15, /* type */
1418 1, /* rightshift */
1419 2, /* size (0 = byte, 1 = short, 2 = long) */
1420 15, /* bitsize */
1421 TRUE, /* pc_relative */
1422 1, /* bitpos */
1423 complain_overflow_signed, /* complain_on_overflow */
1424 bfd_elf_generic_reloc, /* special_function */
1425 "R_PPC_VLE_REL15", /* name */
1426 FALSE, /* partial_inplace */
1427 0, /* src_mask */
1428 0xfffe, /* dst_mask */
1429 TRUE), /* pcrel_offset */
1430
1431 /* A relative 24 bit branch. */
1432 HOWTO (R_PPC_VLE_REL24, /* type */
1433 1, /* rightshift */
1434 2, /* size (0 = byte, 1 = short, 2 = long) */
1435 24, /* bitsize */
1436 TRUE, /* pc_relative */
1437 1, /* bitpos */
1438 complain_overflow_signed, /* complain_on_overflow */
1439 bfd_elf_generic_reloc, /* special_function */
1440 "R_PPC_VLE_REL24", /* name */
1441 FALSE, /* partial_inplace */
1442 0, /* src_mask */
1443 0x1fffffe, /* dst_mask */
1444 TRUE), /* pcrel_offset */
1445
1446 /* The 16 LSBS in split16a format. */
1447 HOWTO (R_PPC_VLE_LO16A, /* type */
1448 0, /* rightshift */
1449 2, /* size (0 = byte, 1 = short, 2 = long) */
1450 16, /* bitsize */
1451 FALSE, /* pc_relative */
1452 0, /* bitpos */
1453 complain_overflow_dont, /* complain_on_overflow */
1454 ppc_elf_unhandled_reloc, /* special_function */
1455 "R_PPC_VLE_LO16A", /* name */
1456 FALSE, /* partial_inplace */
1457 0, /* src_mask */
1458 0x1f007ff, /* dst_mask */
1459 FALSE), /* pcrel_offset */
1460
1461 /* The 16 LSBS in split16d format. */
1462 HOWTO (R_PPC_VLE_LO16D, /* type */
1463 0, /* rightshift */
1464 2, /* size (0 = byte, 1 = short, 2 = long) */
1465 16, /* bitsize */
1466 FALSE, /* pc_relative */
1467 0, /* bitpos */
1468 complain_overflow_dont, /* complain_on_overflow */
1469 ppc_elf_unhandled_reloc, /* special_function */
1470 "R_PPC_VLE_LO16D", /* name */
1471 FALSE, /* partial_inplace */
1472 0, /* src_mask */
1473 0x1f07ff, /* dst_mask */
1474 FALSE), /* pcrel_offset */
1475
1476 /* Bits 16-31 split16a format. */
1477 HOWTO (R_PPC_VLE_HI16A, /* type */
1478 16, /* rightshift */
1479 2, /* size (0 = byte, 1 = short, 2 = long) */
1480 16, /* bitsize */
1481 FALSE, /* pc_relative */
1482 0, /* bitpos */
1483 complain_overflow_dont, /* complain_on_overflow */
1484 ppc_elf_unhandled_reloc, /* special_function */
1485 "R_PPC_VLE_HI16A", /* name */
1486 FALSE, /* partial_inplace */
1487 0, /* src_mask */
1488 0x1f007ff, /* dst_mask */
1489 FALSE), /* pcrel_offset */
1490
1491 /* Bits 16-31 split16d format. */
1492 HOWTO (R_PPC_VLE_HI16D, /* type */
1493 16, /* rightshift */
1494 2, /* size (0 = byte, 1 = short, 2 = long) */
1495 16, /* bitsize */
1496 FALSE, /* pc_relative */
1497 0, /* bitpos */
1498 complain_overflow_dont, /* complain_on_overflow */
1499 ppc_elf_unhandled_reloc, /* special_function */
1500 "R_PPC_VLE_HI16D", /* name */
1501 FALSE, /* partial_inplace */
1502 0, /* src_mask */
1503 0x1f07ff, /* dst_mask */
1504 FALSE), /* pcrel_offset */
1505
1506 /* Bits 16-31 (High Adjusted) in split16a format. */
1507 HOWTO (R_PPC_VLE_HA16A, /* type */
1508 16, /* rightshift */
1509 2, /* size (0 = byte, 1 = short, 2 = long) */
1510 16, /* bitsize */
1511 FALSE, /* pc_relative */
1512 0, /* bitpos */
1513 complain_overflow_dont, /* complain_on_overflow */
1514 ppc_elf_unhandled_reloc, /* special_function */
1515 "R_PPC_VLE_HA16A", /* name */
1516 FALSE, /* partial_inplace */
1517 0, /* src_mask */
1518 0x1f007ff, /* dst_mask */
1519 FALSE), /* pcrel_offset */
1520
1521 /* Bits 16-31 (High Adjusted) in split16d format. */
1522 HOWTO (R_PPC_VLE_HA16D, /* type */
1523 16, /* rightshift */
1524 2, /* size (0 = byte, 1 = short, 2 = long) */
1525 16, /* bitsize */
1526 FALSE, /* pc_relative */
1527 0, /* bitpos */
1528 complain_overflow_dont, /* complain_on_overflow */
1529 ppc_elf_unhandled_reloc, /* special_function */
1530 "R_PPC_VLE_HA16D", /* name */
1531 FALSE, /* partial_inplace */
1532 0, /* src_mask */
1533 0x1f07ff, /* dst_mask */
1534 FALSE), /* pcrel_offset */
1535
1536 /* This reloc is like R_PPC_EMB_SDA21 but only applies to e_add16i
1537 instructions. If the register base is 0 then the linker changes
1538 the e_add16i to an e_li instruction. */
1539 HOWTO (R_PPC_VLE_SDA21, /* type */
1540 0, /* rightshift */
1541 2, /* size (0 = byte, 1 = short, 2 = long) */
1542 16, /* bitsize */
1543 FALSE, /* pc_relative */
1544 0, /* bitpos */
1545 complain_overflow_signed, /* complain_on_overflow */
1546 ppc_elf_unhandled_reloc, /* special_function */
1547 "R_PPC_VLE_SDA21", /* name */
1548 FALSE, /* partial_inplace */
1549 0, /* src_mask */
1550 0xffff, /* dst_mask */
1551 FALSE), /* pcrel_offset */
1552
1553 /* Like R_PPC_VLE_SDA21 but ignore overflow. */
1554 HOWTO (R_PPC_VLE_SDA21_LO, /* type */
1555 0, /* rightshift */
1556 2, /* size (0 = byte, 1 = short, 2 = long) */
1557 16, /* bitsize */
1558 FALSE, /* pc_relative */
1559 0, /* bitpos */
1560 complain_overflow_dont, /* complain_on_overflow */
1561 ppc_elf_unhandled_reloc, /* special_function */
1562 "R_PPC_VLE_SDA21_LO", /* name */
1563 FALSE, /* partial_inplace */
1564 0, /* src_mask */
1565 0xffff, /* dst_mask */
1566 FALSE), /* pcrel_offset */
1567
1568 /* The 16 LSBS relative to _SDA_BASE_ in split16a format. */
1569 HOWTO (R_PPC_VLE_SDAREL_LO16A,/* type */
1570 0, /* rightshift */
1571 2, /* size (0 = byte, 1 = short, 2 = long) */
1572 16, /* bitsize */
1573 FALSE, /* pc_relative */
1574 0, /* bitpos */
1575 complain_overflow_dont, /* complain_on_overflow */
1576 ppc_elf_unhandled_reloc, /* special_function */
1577 "R_PPC_VLE_SDAREL_LO16A", /* name */
1578 FALSE, /* partial_inplace */
1579 0, /* src_mask */
1580 0x1f007ff, /* dst_mask */
1581 FALSE), /* pcrel_offset */
1582
1583 /* The 16 LSBS relative to _SDA_BASE_ in split16d format. */
1584 HOWTO (R_PPC_VLE_SDAREL_LO16D, /* type */
1585 0, /* rightshift */
1586 2, /* size (0 = byte, 1 = short, 2 = long) */
1587 16, /* bitsize */
1588 FALSE, /* pc_relative */
1589 0, /* bitpos */
1590 complain_overflow_dont, /* complain_on_overflow */
1591 ppc_elf_unhandled_reloc, /* special_function */
1592 "R_PPC_VLE_SDAREL_LO16D", /* name */
1593 FALSE, /* partial_inplace */
1594 0, /* src_mask */
1595 0x1f07ff, /* dst_mask */
1596 FALSE), /* pcrel_offset */
1597
1598 /* Bits 16-31 relative to _SDA_BASE_ in split16a format. */
1599 HOWTO (R_PPC_VLE_SDAREL_HI16A, /* type */
1600 16, /* rightshift */
1601 2, /* size (0 = byte, 1 = short, 2 = long) */
1602 16, /* bitsize */
1603 FALSE, /* pc_relative */
1604 0, /* bitpos */
1605 complain_overflow_dont, /* complain_on_overflow */
1606 ppc_elf_unhandled_reloc, /* special_function */
1607 "R_PPC_VLE_SDAREL_HI16A", /* name */
1608 FALSE, /* partial_inplace */
1609 0, /* src_mask */
1610 0x1f007ff, /* dst_mask */
1611 FALSE), /* pcrel_offset */
1612
1613 /* Bits 16-31 relative to _SDA_BASE_ in split16d format. */
1614 HOWTO (R_PPC_VLE_SDAREL_HI16D, /* type */
1615 16, /* rightshift */
1616 2, /* size (0 = byte, 1 = short, 2 = long) */
1617 16, /* bitsize */
1618 FALSE, /* pc_relative */
1619 0, /* bitpos */
1620 complain_overflow_dont, /* complain_on_overflow */
1621 ppc_elf_unhandled_reloc, /* special_function */
1622 "R_PPC_VLE_SDAREL_HI16D", /* name */
1623 FALSE, /* partial_inplace */
1624 0, /* src_mask */
1625 0x1f07ff, /* dst_mask */
1626 FALSE), /* pcrel_offset */
1627
1628 /* Bits 16-31 (HA) relative to _SDA_BASE split16a format. */
1629 HOWTO (R_PPC_VLE_SDAREL_HA16A, /* type */
1630 16, /* rightshift */
1631 2, /* size (0 = byte, 1 = short, 2 = long) */
1632 16, /* bitsize */
1633 FALSE, /* pc_relative */
1634 0, /* bitpos */
1635 complain_overflow_dont, /* complain_on_overflow */
1636 ppc_elf_unhandled_reloc, /* special_function */
1637 "R_PPC_VLE_SDAREL_HA16A", /* name */
1638 FALSE, /* partial_inplace */
1639 0, /* src_mask */
1640 0x1f007ff, /* dst_mask */
1641 FALSE), /* pcrel_offset */
1642
1643 /* Bits 16-31 (HA) relative to _SDA_BASE split16d format. */
1644 HOWTO (R_PPC_VLE_SDAREL_HA16D, /* type */
1645 16, /* rightshift */
1646 2, /* size (0 = byte, 1 = short, 2 = long) */
1647 16, /* bitsize */
1648 FALSE, /* pc_relative */
1649 0, /* bitpos */
1650 complain_overflow_dont, /* complain_on_overflow */
1651 ppc_elf_unhandled_reloc, /* special_function */
1652 "R_PPC_VLE_SDAREL_HA16D", /* name */
1653 FALSE, /* partial_inplace */
1654 0, /* src_mask */
1655 0x1f07ff, /* dst_mask */
1656 FALSE), /* pcrel_offset */
1657
1658 HOWTO (R_PPC_IRELATIVE, /* type */
1659 0, /* rightshift */
1660 2, /* size (0 = byte, 1 = short, 2 = long) */
1661 32, /* bitsize */
1662 FALSE, /* pc_relative */
1663 0, /* bitpos */
1664 complain_overflow_dont, /* complain_on_overflow */
1665 ppc_elf_unhandled_reloc, /* special_function */
1666 "R_PPC_IRELATIVE", /* name */
1667 FALSE, /* partial_inplace */
1668 0, /* src_mask */
1669 0xffffffff, /* dst_mask */
1670 FALSE), /* pcrel_offset */
1671
1672 /* A 16 bit relative relocation. */
1673 HOWTO (R_PPC_REL16, /* type */
1674 0, /* rightshift */
1675 1, /* size (0 = byte, 1 = short, 2 = long) */
1676 16, /* bitsize */
1677 TRUE, /* pc_relative */
1678 0, /* bitpos */
1679 complain_overflow_signed, /* complain_on_overflow */
1680 bfd_elf_generic_reloc, /* special_function */
1681 "R_PPC_REL16", /* name */
1682 FALSE, /* partial_inplace */
1683 0, /* src_mask */
1684 0xffff, /* dst_mask */
1685 TRUE), /* pcrel_offset */
1686
1687 /* A 16 bit relative relocation without overflow. */
1688 HOWTO (R_PPC_REL16_LO, /* type */
1689 0, /* rightshift */
1690 1, /* size (0 = byte, 1 = short, 2 = long) */
1691 16, /* bitsize */
1692 TRUE, /* pc_relative */
1693 0, /* bitpos */
1694 complain_overflow_dont,/* complain_on_overflow */
1695 bfd_elf_generic_reloc, /* special_function */
1696 "R_PPC_REL16_LO", /* name */
1697 FALSE, /* partial_inplace */
1698 0, /* src_mask */
1699 0xffff, /* dst_mask */
1700 TRUE), /* pcrel_offset */
1701
1702 /* The high order 16 bits of a relative address. */
1703 HOWTO (R_PPC_REL16_HI, /* type */
1704 16, /* rightshift */
1705 1, /* size (0 = byte, 1 = short, 2 = long) */
1706 16, /* bitsize */
1707 TRUE, /* pc_relative */
1708 0, /* bitpos */
1709 complain_overflow_dont, /* complain_on_overflow */
1710 bfd_elf_generic_reloc, /* special_function */
1711 "R_PPC_REL16_HI", /* name */
1712 FALSE, /* partial_inplace */
1713 0, /* src_mask */
1714 0xffff, /* dst_mask */
1715 TRUE), /* pcrel_offset */
1716
1717 /* The high order 16 bits of a relative address, plus 1 if the contents of
1718 the low 16 bits, treated as a signed number, is negative. */
1719 HOWTO (R_PPC_REL16_HA, /* type */
1720 16, /* rightshift */
1721 1, /* size (0 = byte, 1 = short, 2 = long) */
1722 16, /* bitsize */
1723 TRUE, /* pc_relative */
1724 0, /* bitpos */
1725 complain_overflow_dont, /* complain_on_overflow */
1726 ppc_elf_addr16_ha_reloc, /* special_function */
1727 "R_PPC_REL16_HA", /* name */
1728 FALSE, /* partial_inplace */
1729 0, /* src_mask */
1730 0xffff, /* dst_mask */
1731 TRUE), /* pcrel_offset */
1732
1733 /* Like R_PPC_REL16_HA but for split field in addpcis. */
1734 HOWTO (R_PPC_REL16DX_HA, /* type */
1735 16, /* rightshift */
1736 2, /* size (0 = byte, 1 = short, 2 = long) */
1737 16, /* bitsize */
1738 TRUE, /* pc_relative */
1739 0, /* bitpos */
1740 complain_overflow_signed, /* complain_on_overflow */
1741 ppc_elf_addr16_ha_reloc, /* special_function */
1742 "R_PPC_REL16DX_HA", /* name */
1743 FALSE, /* partial_inplace */
1744 0, /* src_mask */
1745 0x1fffc1, /* dst_mask */
1746 TRUE), /* pcrel_offset */
1747
1748 /* GNU extension to record C++ vtable hierarchy. */
1749 HOWTO (R_PPC_GNU_VTINHERIT, /* type */
1750 0, /* rightshift */
1751 0, /* size (0 = byte, 1 = short, 2 = long) */
1752 0, /* bitsize */
1753 FALSE, /* pc_relative */
1754 0, /* bitpos */
1755 complain_overflow_dont, /* complain_on_overflow */
1756 NULL, /* special_function */
1757 "R_PPC_GNU_VTINHERIT", /* name */
1758 FALSE, /* partial_inplace */
1759 0, /* src_mask */
1760 0, /* dst_mask */
1761 FALSE), /* pcrel_offset */
1762
1763 /* GNU extension to record C++ vtable member usage. */
1764 HOWTO (R_PPC_GNU_VTENTRY, /* type */
1765 0, /* rightshift */
1766 0, /* size (0 = byte, 1 = short, 2 = long) */
1767 0, /* bitsize */
1768 FALSE, /* pc_relative */
1769 0, /* bitpos */
1770 complain_overflow_dont, /* complain_on_overflow */
1771 NULL, /* special_function */
1772 "R_PPC_GNU_VTENTRY", /* name */
1773 FALSE, /* partial_inplace */
1774 0, /* src_mask */
1775 0, /* dst_mask */
1776 FALSE), /* pcrel_offset */
1777
1778 /* Phony reloc to handle AIX style TOC entries. */
1779 HOWTO (R_PPC_TOC16, /* type */
1780 0, /* rightshift */
1781 1, /* size (0 = byte, 1 = short, 2 = long) */
1782 16, /* bitsize */
1783 FALSE, /* pc_relative */
1784 0, /* bitpos */
1785 complain_overflow_signed, /* complain_on_overflow */
1786 ppc_elf_unhandled_reloc, /* special_function */
1787 "R_PPC_TOC16", /* name */
1788 FALSE, /* partial_inplace */
1789 0, /* src_mask */
1790 0xffff, /* dst_mask */
1791 FALSE), /* pcrel_offset */
1792 };
1793
1794 /* External 32-bit PPC structure for PRPSINFO. This structure is
1795 ABI-defined, thus we choose to use char arrays here in order to
1796 avoid dealing with different types in different architectures.
1797
1798 The PPC 32-bit structure uses int for `pr_uid' and `pr_gid' while
1799 most non-PPC architectures use `short int'.
1800
1801 This structure will ultimately be written in the corefile's note
1802 section, as the PRPSINFO. */
1803
1804 struct elf_external_ppc_linux_prpsinfo32
1805 {
1806 char pr_state; /* Numeric process state. */
1807 char pr_sname; /* Char for pr_state. */
1808 char pr_zomb; /* Zombie. */
1809 char pr_nice; /* Nice val. */
1810 char pr_flag[4]; /* Flags. */
1811 char pr_uid[4];
1812 char pr_gid[4];
1813 char pr_pid[4];
1814 char pr_ppid[4];
1815 char pr_pgrp[4];
1816 char pr_sid[4];
1817 char pr_fname[16]; /* Filename of executable. */
1818 char pr_psargs[80]; /* Initial part of arg list. */
1819 };
1820
1821 /* Helper function to copy an elf_internal_linux_prpsinfo in host
1822 endian to an elf_external_ppc_linux_prpsinfo32 in target endian. */
1823
1824 static inline void
1825 swap_ppc_linux_prpsinfo32_out (bfd *obfd,
1826 const struct elf_internal_linux_prpsinfo *from,
1827 struct elf_external_ppc_linux_prpsinfo32 *to)
1828 {
1829 bfd_put_8 (obfd, from->pr_state, &to->pr_state);
1830 bfd_put_8 (obfd, from->pr_sname, &to->pr_sname);
1831 bfd_put_8 (obfd, from->pr_zomb, &to->pr_zomb);
1832 bfd_put_8 (obfd, from->pr_nice, &to->pr_nice);
1833 bfd_put_32 (obfd, from->pr_flag, to->pr_flag);
1834 bfd_put_32 (obfd, from->pr_uid, to->pr_uid);
1835 bfd_put_32 (obfd, from->pr_gid, to->pr_gid);
1836 bfd_put_32 (obfd, from->pr_pid, to->pr_pid);
1837 bfd_put_32 (obfd, from->pr_ppid, to->pr_ppid);
1838 bfd_put_32 (obfd, from->pr_pgrp, to->pr_pgrp);
1839 bfd_put_32 (obfd, from->pr_sid, to->pr_sid);
1840 strncpy (to->pr_fname, from->pr_fname, sizeof (to->pr_fname));
1841 strncpy (to->pr_psargs, from->pr_psargs, sizeof (to->pr_psargs));
1842 }
1843 \f
1844 /* Initialize the ppc_elf_howto_table, so that linear accesses can be done. */
1845
1846 static void
1847 ppc_elf_howto_init (void)
1848 {
1849 unsigned int i, type;
1850
1851 for (i = 0;
1852 i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]);
1853 i++)
1854 {
1855 type = ppc_elf_howto_raw[i].type;
1856 if (type >= (sizeof (ppc_elf_howto_table)
1857 / sizeof (ppc_elf_howto_table[0])))
1858 abort ();
1859 ppc_elf_howto_table[type] = &ppc_elf_howto_raw[i];
1860 }
1861 }
1862
1863 static reloc_howto_type *
1864 ppc_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1865 bfd_reloc_code_real_type code)
1866 {
1867 enum elf_ppc_reloc_type r;
1868
1869 /* Initialize howto table if not already done. */
1870 if (!ppc_elf_howto_table[R_PPC_ADDR32])
1871 ppc_elf_howto_init ();
1872
1873 switch (code)
1874 {
1875 default:
1876 return NULL;
1877
1878 case BFD_RELOC_NONE: r = R_PPC_NONE; break;
1879 case BFD_RELOC_32: r = R_PPC_ADDR32; break;
1880 case BFD_RELOC_PPC_BA26: r = R_PPC_ADDR24; break;
1881 case BFD_RELOC_PPC64_ADDR16_DS:
1882 case BFD_RELOC_16: r = R_PPC_ADDR16; break;
1883 case BFD_RELOC_PPC64_ADDR16_LO_DS:
1884 case BFD_RELOC_LO16: r = R_PPC_ADDR16_LO; break;
1885 case BFD_RELOC_HI16: r = R_PPC_ADDR16_HI; break;
1886 case BFD_RELOC_HI16_S: r = R_PPC_ADDR16_HA; break;
1887 case BFD_RELOC_PPC_BA16: r = R_PPC_ADDR14; break;
1888 case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC_ADDR14_BRTAKEN; break;
1889 case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC_ADDR14_BRNTAKEN; break;
1890 case BFD_RELOC_PPC_B26: r = R_PPC_REL24; break;
1891 case BFD_RELOC_PPC_B16: r = R_PPC_REL14; break;
1892 case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC_REL14_BRTAKEN; break;
1893 case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC_REL14_BRNTAKEN; break;
1894 case BFD_RELOC_PPC64_GOT16_DS:
1895 case BFD_RELOC_16_GOTOFF: r = R_PPC_GOT16; break;
1896 case BFD_RELOC_PPC64_GOT16_LO_DS:
1897 case BFD_RELOC_LO16_GOTOFF: r = R_PPC_GOT16_LO; break;
1898 case BFD_RELOC_HI16_GOTOFF: r = R_PPC_GOT16_HI; break;
1899 case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC_GOT16_HA; break;
1900 case BFD_RELOC_24_PLT_PCREL: r = R_PPC_PLTREL24; break;
1901 case BFD_RELOC_PPC_COPY: r = R_PPC_COPY; break;
1902 case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC_GLOB_DAT; break;
1903 case BFD_RELOC_PPC_LOCAL24PC: r = R_PPC_LOCAL24PC; break;
1904 case BFD_RELOC_32_PCREL: r = R_PPC_REL32; break;
1905 case BFD_RELOC_32_PLTOFF: r = R_PPC_PLT32; break;
1906 case BFD_RELOC_32_PLT_PCREL: r = R_PPC_PLTREL32; break;
1907 case BFD_RELOC_PPC64_PLT16_LO_DS:
1908 case BFD_RELOC_LO16_PLTOFF: r = R_PPC_PLT16_LO; break;
1909 case BFD_RELOC_HI16_PLTOFF: r = R_PPC_PLT16_HI; break;
1910 case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC_PLT16_HA; break;
1911 case BFD_RELOC_GPREL16: r = R_PPC_SDAREL16; break;
1912 case BFD_RELOC_PPC64_SECTOFF_DS:
1913 case BFD_RELOC_16_BASEREL: r = R_PPC_SECTOFF; break;
1914 case BFD_RELOC_PPC64_SECTOFF_LO_DS:
1915 case BFD_RELOC_LO16_BASEREL: r = R_PPC_SECTOFF_LO; break;
1916 case BFD_RELOC_HI16_BASEREL: r = R_PPC_SECTOFF_HI; break;
1917 case BFD_RELOC_HI16_S_BASEREL: r = R_PPC_SECTOFF_HA; break;
1918 case BFD_RELOC_CTOR: r = R_PPC_ADDR32; break;
1919 case BFD_RELOC_PPC64_TOC16_DS:
1920 case BFD_RELOC_PPC_TOC16: r = R_PPC_TOC16; break;
1921 case BFD_RELOC_PPC_TLS: r = R_PPC_TLS; break;
1922 case BFD_RELOC_PPC_TLSGD: r = R_PPC_TLSGD; break;
1923 case BFD_RELOC_PPC_TLSLD: r = R_PPC_TLSLD; break;
1924 case BFD_RELOC_PPC_DTPMOD: r = R_PPC_DTPMOD32; break;
1925 case BFD_RELOC_PPC64_TPREL16_DS:
1926 case BFD_RELOC_PPC_TPREL16: r = R_PPC_TPREL16; break;
1927 case BFD_RELOC_PPC64_TPREL16_LO_DS:
1928 case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC_TPREL16_LO; break;
1929 case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC_TPREL16_HI; break;
1930 case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC_TPREL16_HA; break;
1931 case BFD_RELOC_PPC_TPREL: r = R_PPC_TPREL32; break;
1932 case BFD_RELOC_PPC64_DTPREL16_DS:
1933 case BFD_RELOC_PPC_DTPREL16: r = R_PPC_DTPREL16; break;
1934 case BFD_RELOC_PPC64_DTPREL16_LO_DS:
1935 case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC_DTPREL16_LO; break;
1936 case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC_DTPREL16_HI; break;
1937 case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC_DTPREL16_HA; break;
1938 case BFD_RELOC_PPC_DTPREL: r = R_PPC_DTPREL32; break;
1939 case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC_GOT_TLSGD16; break;
1940 case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC_GOT_TLSGD16_LO; break;
1941 case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC_GOT_TLSGD16_HI; break;
1942 case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC_GOT_TLSGD16_HA; break;
1943 case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC_GOT_TLSLD16; break;
1944 case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC_GOT_TLSLD16_LO; break;
1945 case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC_GOT_TLSLD16_HI; break;
1946 case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC_GOT_TLSLD16_HA; break;
1947 case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC_GOT_TPREL16; break;
1948 case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC_GOT_TPREL16_LO; break;
1949 case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC_GOT_TPREL16_HI; break;
1950 case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC_GOT_TPREL16_HA; break;
1951 case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC_GOT_DTPREL16; break;
1952 case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC_GOT_DTPREL16_LO; break;
1953 case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC_GOT_DTPREL16_HI; break;
1954 case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC_GOT_DTPREL16_HA; break;
1955 case BFD_RELOC_PPC_EMB_NADDR32: r = R_PPC_EMB_NADDR32; break;
1956 case BFD_RELOC_PPC_EMB_NADDR16: r = R_PPC_EMB_NADDR16; break;
1957 case BFD_RELOC_PPC_EMB_NADDR16_LO: r = R_PPC_EMB_NADDR16_LO; break;
1958 case BFD_RELOC_PPC_EMB_NADDR16_HI: r = R_PPC_EMB_NADDR16_HI; break;
1959 case BFD_RELOC_PPC_EMB_NADDR16_HA: r = R_PPC_EMB_NADDR16_HA; break;
1960 case BFD_RELOC_PPC_EMB_SDAI16: r = R_PPC_EMB_SDAI16; break;
1961 case BFD_RELOC_PPC_EMB_SDA2I16: r = R_PPC_EMB_SDA2I16; break;
1962 case BFD_RELOC_PPC_EMB_SDA2REL: r = R_PPC_EMB_SDA2REL; break;
1963 case BFD_RELOC_PPC_EMB_SDA21: r = R_PPC_EMB_SDA21; break;
1964 case BFD_RELOC_PPC_EMB_MRKREF: r = R_PPC_EMB_MRKREF; break;
1965 case BFD_RELOC_PPC_EMB_RELSEC16: r = R_PPC_EMB_RELSEC16; break;
1966 case BFD_RELOC_PPC_EMB_RELST_LO: r = R_PPC_EMB_RELST_LO; break;
1967 case BFD_RELOC_PPC_EMB_RELST_HI: r = R_PPC_EMB_RELST_HI; break;
1968 case BFD_RELOC_PPC_EMB_RELST_HA: r = R_PPC_EMB_RELST_HA; break;
1969 case BFD_RELOC_PPC_EMB_BIT_FLD: r = R_PPC_EMB_BIT_FLD; break;
1970 case BFD_RELOC_PPC_EMB_RELSDA: r = R_PPC_EMB_RELSDA; break;
1971 case BFD_RELOC_PPC_VLE_REL8: r = R_PPC_VLE_REL8; break;
1972 case BFD_RELOC_PPC_VLE_REL15: r = R_PPC_VLE_REL15; break;
1973 case BFD_RELOC_PPC_VLE_REL24: r = R_PPC_VLE_REL24; break;
1974 case BFD_RELOC_PPC_VLE_LO16A: r = R_PPC_VLE_LO16A; break;
1975 case BFD_RELOC_PPC_VLE_LO16D: r = R_PPC_VLE_LO16D; break;
1976 case BFD_RELOC_PPC_VLE_HI16A: r = R_PPC_VLE_HI16A; break;
1977 case BFD_RELOC_PPC_VLE_HI16D: r = R_PPC_VLE_HI16D; break;
1978 case BFD_RELOC_PPC_VLE_HA16A: r = R_PPC_VLE_HA16A; break;
1979 case BFD_RELOC_PPC_VLE_HA16D: r = R_PPC_VLE_HA16D; break;
1980 case BFD_RELOC_PPC_VLE_SDA21: r = R_PPC_VLE_SDA21; break;
1981 case BFD_RELOC_PPC_VLE_SDA21_LO: r = R_PPC_VLE_SDA21_LO; break;
1982 case BFD_RELOC_PPC_VLE_SDAREL_LO16A:
1983 r = R_PPC_VLE_SDAREL_LO16A;
1984 break;
1985 case BFD_RELOC_PPC_VLE_SDAREL_LO16D:
1986 r = R_PPC_VLE_SDAREL_LO16D;
1987 break;
1988 case BFD_RELOC_PPC_VLE_SDAREL_HI16A:
1989 r = R_PPC_VLE_SDAREL_HI16A;
1990 break;
1991 case BFD_RELOC_PPC_VLE_SDAREL_HI16D:
1992 r = R_PPC_VLE_SDAREL_HI16D;
1993 break;
1994 case BFD_RELOC_PPC_VLE_SDAREL_HA16A:
1995 r = R_PPC_VLE_SDAREL_HA16A;
1996 break;
1997 case BFD_RELOC_PPC_VLE_SDAREL_HA16D:
1998 r = R_PPC_VLE_SDAREL_HA16D;
1999 break;
2000 case BFD_RELOC_16_PCREL: r = R_PPC_REL16; break;
2001 case BFD_RELOC_LO16_PCREL: r = R_PPC_REL16_LO; break;
2002 case BFD_RELOC_HI16_PCREL: r = R_PPC_REL16_HI; break;
2003 case BFD_RELOC_HI16_S_PCREL: r = R_PPC_REL16_HA; break;
2004 case BFD_RELOC_PPC_REL16DX_HA: r = R_PPC_REL16DX_HA; break;
2005 case BFD_RELOC_VTABLE_INHERIT: r = R_PPC_GNU_VTINHERIT; break;
2006 case BFD_RELOC_VTABLE_ENTRY: r = R_PPC_GNU_VTENTRY; break;
2007 }
2008
2009 return ppc_elf_howto_table[r];
2010 };
2011
2012 static reloc_howto_type *
2013 ppc_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
2014 const char *r_name)
2015 {
2016 unsigned int i;
2017
2018 for (i = 0;
2019 i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]);
2020 i++)
2021 if (ppc_elf_howto_raw[i].name != NULL
2022 && strcasecmp (ppc_elf_howto_raw[i].name, r_name) == 0)
2023 return &ppc_elf_howto_raw[i];
2024
2025 return NULL;
2026 }
2027
2028 /* Set the howto pointer for a PowerPC ELF reloc. */
2029
2030 static void
2031 ppc_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED,
2032 arelent *cache_ptr,
2033 Elf_Internal_Rela *dst)
2034 {
2035 unsigned int r_type;
2036
2037 /* Initialize howto table if not already done. */
2038 if (!ppc_elf_howto_table[R_PPC_ADDR32])
2039 ppc_elf_howto_init ();
2040
2041 r_type = ELF32_R_TYPE (dst->r_info);
2042 if (r_type >= R_PPC_max)
2043 {
2044 _bfd_error_handler (_("%B: unrecognised PPC reloc number: %d"),
2045 abfd, r_type);
2046 bfd_set_error (bfd_error_bad_value);
2047 r_type = R_PPC_NONE;
2048 }
2049 cache_ptr->howto = ppc_elf_howto_table[r_type];
2050
2051 /* Just because the above assert didn't trigger doesn't mean that
2052 ELF32_R_TYPE (dst->r_info) is necessarily a valid relocation. */
2053 if (!cache_ptr->howto)
2054 {
2055 _bfd_error_handler (_("%B: invalid relocation type %d"),
2056 abfd, r_type);
2057 bfd_set_error (bfd_error_bad_value);
2058
2059 cache_ptr->howto = ppc_elf_howto_table[R_PPC_NONE];
2060 }
2061 }
2062
2063 /* Handle the R_PPC_ADDR16_HA and R_PPC_REL16_HA relocs. */
2064
2065 static bfd_reloc_status_type
2066 ppc_elf_addr16_ha_reloc (bfd *abfd ATTRIBUTE_UNUSED,
2067 arelent *reloc_entry,
2068 asymbol *symbol,
2069 void *data ATTRIBUTE_UNUSED,
2070 asection *input_section,
2071 bfd *output_bfd,
2072 char **error_message ATTRIBUTE_UNUSED)
2073 {
2074 enum elf_ppc_reloc_type r_type;
2075 long insn;
2076 bfd_size_type octets;
2077 bfd_vma value;
2078
2079 if (output_bfd != NULL)
2080 {
2081 reloc_entry->address += input_section->output_offset;
2082 return bfd_reloc_ok;
2083 }
2084
2085 reloc_entry->addend += 0x8000;
2086 r_type = reloc_entry->howto->type;
2087 if (r_type != R_PPC_REL16DX_HA)
2088 return bfd_reloc_continue;
2089
2090 value = 0;
2091 if (!bfd_is_com_section (symbol->section))
2092 value = symbol->value;
2093 value += (reloc_entry->addend
2094 + symbol->section->output_offset
2095 + symbol->section->output_section->vma);
2096 value -= (reloc_entry->address
2097 + input_section->output_offset
2098 + input_section->output_section->vma);
2099 value >>= 16;
2100
2101 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
2102 insn = bfd_get_32 (abfd, (bfd_byte *) data + octets);
2103 insn &= ~0x1fffc1;
2104 insn |= (value & 0xffc1) | ((value & 0x3e) << 15);
2105 bfd_put_32 (abfd, insn, (bfd_byte *) data + octets);
2106 return bfd_reloc_ok;
2107 }
2108
2109 static bfd_reloc_status_type
2110 ppc_elf_unhandled_reloc (bfd *abfd,
2111 arelent *reloc_entry,
2112 asymbol *symbol,
2113 void *data,
2114 asection *input_section,
2115 bfd *output_bfd,
2116 char **error_message)
2117 {
2118 /* If this is a relocatable link (output_bfd test tells us), just
2119 call the generic function. Any adjustment will be done at final
2120 link time. */
2121 if (output_bfd != NULL)
2122 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2123 input_section, output_bfd, error_message);
2124
2125 if (error_message != NULL)
2126 {
2127 static char buf[60];
2128 sprintf (buf, _("generic linker can't handle %s"),
2129 reloc_entry->howto->name);
2130 *error_message = buf;
2131 }
2132 return bfd_reloc_dangerous;
2133 }
2134 \f
2135 /* Sections created by the linker. */
2136
2137 typedef struct elf_linker_section
2138 {
2139 /* Pointer to the bfd section. */
2140 asection *section;
2141 /* Section name. */
2142 const char *name;
2143 /* Associated bss section name. */
2144 const char *bss_name;
2145 /* Associated symbol name. */
2146 const char *sym_name;
2147 /* Associated symbol. */
2148 struct elf_link_hash_entry *sym;
2149 } elf_linker_section_t;
2150
2151 /* Linked list of allocated pointer entries. This hangs off of the
2152 symbol lists, and provides allows us to return different pointers,
2153 based on different addend's. */
2154
2155 typedef struct elf_linker_section_pointers
2156 {
2157 /* next allocated pointer for this symbol */
2158 struct elf_linker_section_pointers *next;
2159 /* offset of pointer from beginning of section */
2160 bfd_vma offset;
2161 /* addend used */
2162 bfd_vma addend;
2163 /* which linker section this is */
2164 elf_linker_section_t *lsect;
2165 } elf_linker_section_pointers_t;
2166
2167 struct ppc_elf_obj_tdata
2168 {
2169 struct elf_obj_tdata elf;
2170
2171 /* A mapping from local symbols to offsets into the various linker
2172 sections added. This is index by the symbol index. */
2173 elf_linker_section_pointers_t **linker_section_pointers;
2174
2175 /* Flags used to auto-detect plt type. */
2176 unsigned int makes_plt_call : 1;
2177 unsigned int has_rel16 : 1;
2178 };
2179
2180 #define ppc_elf_tdata(bfd) \
2181 ((struct ppc_elf_obj_tdata *) (bfd)->tdata.any)
2182
2183 #define elf_local_ptr_offsets(bfd) \
2184 (ppc_elf_tdata (bfd)->linker_section_pointers)
2185
2186 #define is_ppc_elf(bfd) \
2187 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
2188 && elf_object_id (bfd) == PPC32_ELF_DATA)
2189
2190 /* Override the generic function because we store some extras. */
2191
2192 static bfd_boolean
2193 ppc_elf_mkobject (bfd *abfd)
2194 {
2195 return bfd_elf_allocate_object (abfd, sizeof (struct ppc_elf_obj_tdata),
2196 PPC32_ELF_DATA);
2197 }
2198
2199 /* When defaulting arch/mach, decode apuinfo to find a better match. */
2200
2201 bfd_boolean
2202 _bfd_elf_ppc_set_arch (bfd *abfd)
2203 {
2204 unsigned long mach = 0;
2205 asection *s;
2206 unsigned char *contents;
2207
2208 if (abfd->arch_info->bits_per_word == 32
2209 && bfd_big_endian (abfd))
2210 {
2211
2212 for (s = abfd->sections; s != NULL; s = s->next)
2213 if ((elf_section_data (s)->this_hdr.sh_flags & SHF_PPC_VLE) != 0)
2214 break;
2215 if (s != NULL)
2216 mach = bfd_mach_ppc_vle;
2217 }
2218
2219 if (mach == 0)
2220 {
2221 s = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2222 if (s != NULL && bfd_malloc_and_get_section (abfd, s, &contents))
2223 {
2224 unsigned int apuinfo_size = bfd_get_32 (abfd, contents + 4);
2225 unsigned int i;
2226
2227 for (i = 20; i < apuinfo_size + 20 && i + 4 <= s->size; i += 4)
2228 {
2229 unsigned int val = bfd_get_32 (abfd, contents + i);
2230 switch (val >> 16)
2231 {
2232 case PPC_APUINFO_PMR:
2233 case PPC_APUINFO_RFMCI:
2234 if (mach == 0)
2235 mach = bfd_mach_ppc_titan;
2236 break;
2237
2238 case PPC_APUINFO_ISEL:
2239 case PPC_APUINFO_CACHELCK:
2240 if (mach == bfd_mach_ppc_titan)
2241 mach = bfd_mach_ppc_e500mc;
2242 break;
2243
2244 case PPC_APUINFO_SPE:
2245 case PPC_APUINFO_EFS:
2246 case PPC_APUINFO_BRLOCK:
2247 if (mach != bfd_mach_ppc_vle)
2248 mach = bfd_mach_ppc_e500;
2249 break;
2250
2251 case PPC_APUINFO_VLE:
2252 mach = bfd_mach_ppc_vle;
2253 break;
2254
2255 default:
2256 mach = -1ul;
2257 }
2258 }
2259 free (contents);
2260 }
2261 }
2262
2263 if (mach != 0 && mach != -1ul)
2264 {
2265 const bfd_arch_info_type *arch;
2266
2267 for (arch = abfd->arch_info->next; arch; arch = arch->next)
2268 if (arch->mach == mach)
2269 {
2270 abfd->arch_info = arch;
2271 break;
2272 }
2273 }
2274 return TRUE;
2275 }
2276
2277 /* Fix bad default arch selected for a 32 bit input bfd when the
2278 default is 64 bit. Also select arch based on apuinfo. */
2279
2280 static bfd_boolean
2281 ppc_elf_object_p (bfd *abfd)
2282 {
2283 if (!abfd->arch_info->the_default)
2284 return TRUE;
2285
2286 if (abfd->arch_info->bits_per_word == 64)
2287 {
2288 Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd);
2289
2290 if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS32)
2291 {
2292 /* Relies on arch after 64 bit default being 32 bit default. */
2293 abfd->arch_info = abfd->arch_info->next;
2294 BFD_ASSERT (abfd->arch_info->bits_per_word == 32);
2295 }
2296 }
2297 return _bfd_elf_ppc_set_arch (abfd);
2298 }
2299
2300 /* Function to set whether a module needs the -mrelocatable bit set. */
2301
2302 static bfd_boolean
2303 ppc_elf_set_private_flags (bfd *abfd, flagword flags)
2304 {
2305 BFD_ASSERT (!elf_flags_init (abfd)
2306 || elf_elfheader (abfd)->e_flags == flags);
2307
2308 elf_elfheader (abfd)->e_flags = flags;
2309 elf_flags_init (abfd) = TRUE;
2310 return TRUE;
2311 }
2312
2313 /* Support for core dump NOTE sections. */
2314
2315 static bfd_boolean
2316 ppc_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
2317 {
2318 int offset;
2319 unsigned int size;
2320
2321 switch (note->descsz)
2322 {
2323 default:
2324 return FALSE;
2325
2326 case 268: /* Linux/PPC. */
2327 /* pr_cursig */
2328 elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12);
2329
2330 /* pr_pid */
2331 elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 24);
2332
2333 /* pr_reg */
2334 offset = 72;
2335 size = 192;
2336
2337 break;
2338 }
2339
2340 /* Make a ".reg/999" section. */
2341 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
2342 size, note->descpos + offset);
2343 }
2344
2345 static bfd_boolean
2346 ppc_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
2347 {
2348 switch (note->descsz)
2349 {
2350 default:
2351 return FALSE;
2352
2353 case 128: /* Linux/PPC elf_prpsinfo. */
2354 elf_tdata (abfd)->core->pid
2355 = bfd_get_32 (abfd, note->descdata + 16);
2356 elf_tdata (abfd)->core->program
2357 = _bfd_elfcore_strndup (abfd, note->descdata + 32, 16);
2358 elf_tdata (abfd)->core->command
2359 = _bfd_elfcore_strndup (abfd, note->descdata + 48, 80);
2360 }
2361
2362 /* Note that for some reason, a spurious space is tacked
2363 onto the end of the args in some (at least one anyway)
2364 implementations, so strip it off if it exists. */
2365
2366 {
2367 char *command = elf_tdata (abfd)->core->command;
2368 int n = strlen (command);
2369
2370 if (0 < n && command[n - 1] == ' ')
2371 command[n - 1] = '\0';
2372 }
2373
2374 return TRUE;
2375 }
2376
2377 char *
2378 elfcore_write_ppc_linux_prpsinfo32
2379 (bfd *abfd,
2380 char *buf,
2381 int *bufsiz,
2382 const struct elf_internal_linux_prpsinfo *prpsinfo)
2383 {
2384 struct elf_external_ppc_linux_prpsinfo32 data;
2385
2386 swap_ppc_linux_prpsinfo32_out (abfd, prpsinfo, &data);
2387 return elfcore_write_note (abfd, buf, bufsiz,
2388 "CORE", NT_PRPSINFO, &data, sizeof (data));
2389 }
2390
2391 static char *
2392 ppc_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type, ...)
2393 {
2394 switch (note_type)
2395 {
2396 default:
2397 return NULL;
2398
2399 case NT_PRPSINFO:
2400 {
2401 char data[128];
2402 va_list ap;
2403
2404 va_start (ap, note_type);
2405 memset (data, 0, sizeof (data));
2406 strncpy (data + 32, va_arg (ap, const char *), 16);
2407 strncpy (data + 48, va_arg (ap, const char *), 80);
2408 va_end (ap);
2409 return elfcore_write_note (abfd, buf, bufsiz,
2410 "CORE", note_type, data, sizeof (data));
2411 }
2412
2413 case NT_PRSTATUS:
2414 {
2415 char data[268];
2416 va_list ap;
2417 long pid;
2418 int cursig;
2419 const void *greg;
2420
2421 va_start (ap, note_type);
2422 memset (data, 0, 72);
2423 pid = va_arg (ap, long);
2424 bfd_put_32 (abfd, pid, data + 24);
2425 cursig = va_arg (ap, int);
2426 bfd_put_16 (abfd, cursig, data + 12);
2427 greg = va_arg (ap, const void *);
2428 memcpy (data + 72, greg, 192);
2429 memset (data + 264, 0, 4);
2430 va_end (ap);
2431 return elfcore_write_note (abfd, buf, bufsiz,
2432 "CORE", note_type, data, sizeof (data));
2433 }
2434 }
2435 }
2436
2437 static flagword
2438 ppc_elf_lookup_section_flags (char *flag_name)
2439 {
2440
2441 if (!strcmp (flag_name, "SHF_PPC_VLE"))
2442 return SHF_PPC_VLE;
2443
2444 return 0;
2445 }
2446
2447 /* Return address for Ith PLT stub in section PLT, for relocation REL
2448 or (bfd_vma) -1 if it should not be included. */
2449
2450 static bfd_vma
2451 ppc_elf_plt_sym_val (bfd_vma i ATTRIBUTE_UNUSED,
2452 const asection *plt ATTRIBUTE_UNUSED,
2453 const arelent *rel)
2454 {
2455 return rel->address;
2456 }
2457
2458 /* Handle a PowerPC specific section when reading an object file. This
2459 is called when bfd_section_from_shdr finds a section with an unknown
2460 type. */
2461
2462 static bfd_boolean
2463 ppc_elf_section_from_shdr (bfd *abfd,
2464 Elf_Internal_Shdr *hdr,
2465 const char *name,
2466 int shindex)
2467 {
2468 asection *newsect;
2469 flagword flags;
2470
2471 if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
2472 return FALSE;
2473
2474 newsect = hdr->bfd_section;
2475 flags = bfd_get_section_flags (abfd, newsect);
2476 if (hdr->sh_flags & SHF_EXCLUDE)
2477 flags |= SEC_EXCLUDE;
2478
2479 if (hdr->sh_type == SHT_ORDERED)
2480 flags |= SEC_SORT_ENTRIES;
2481
2482 bfd_set_section_flags (abfd, newsect, flags);
2483 return TRUE;
2484 }
2485
2486 /* Set up any other section flags and such that may be necessary. */
2487
2488 static bfd_boolean
2489 ppc_elf_fake_sections (bfd *abfd ATTRIBUTE_UNUSED,
2490 Elf_Internal_Shdr *shdr,
2491 asection *asect)
2492 {
2493 if ((asect->flags & SEC_SORT_ENTRIES) != 0)
2494 shdr->sh_type = SHT_ORDERED;
2495
2496 return TRUE;
2497 }
2498
2499 /* If we have .sbss2 or .PPC.EMB.sbss0 output sections, we
2500 need to bump up the number of section headers. */
2501
2502 static int
2503 ppc_elf_additional_program_headers (bfd *abfd,
2504 struct bfd_link_info *info ATTRIBUTE_UNUSED)
2505 {
2506 asection *s;
2507 int ret = 0;
2508
2509 s = bfd_get_section_by_name (abfd, ".sbss2");
2510 if (s != NULL && (s->flags & SEC_ALLOC) != 0)
2511 ++ret;
2512
2513 s = bfd_get_section_by_name (abfd, ".PPC.EMB.sbss0");
2514 if (s != NULL && (s->flags & SEC_ALLOC) != 0)
2515 ++ret;
2516
2517 return ret;
2518 }
2519
2520 /* Modify the segment map for VLE executables. */
2521
2522 bfd_boolean
2523 ppc_elf_modify_segment_map (bfd *abfd,
2524 struct bfd_link_info *info ATTRIBUTE_UNUSED)
2525 {
2526 struct elf_segment_map *m;
2527
2528 /* At this point in the link, output sections have already been sorted by
2529 LMA and assigned to segments. All that is left to do is to ensure
2530 there is no mixing of VLE & non-VLE sections in a text segment.
2531 If we find that case, we split the segment.
2532 We maintain the original output section order. */
2533
2534 for (m = elf_seg_map (abfd); m != NULL; m = m->next)
2535 {
2536 struct elf_segment_map *n;
2537 bfd_size_type amt;
2538 unsigned int j, k;
2539 unsigned int p_flags;
2540
2541 if (m->p_type != PT_LOAD || m->count == 0)
2542 continue;
2543
2544 for (p_flags = PF_R, j = 0; j != m->count; ++j)
2545 {
2546 if ((m->sections[j]->flags & SEC_READONLY) == 0)
2547 p_flags |= PF_W;
2548 if ((m->sections[j]->flags & SEC_CODE) != 0)
2549 {
2550 p_flags |= PF_X;
2551 if ((elf_section_flags (m->sections[j]) & SHF_PPC_VLE) != 0)
2552 p_flags |= PF_PPC_VLE;
2553 break;
2554 }
2555 }
2556 if (j != m->count)
2557 while (++j != m->count)
2558 {
2559 unsigned int p_flags1 = PF_R;
2560
2561 if ((m->sections[j]->flags & SEC_READONLY) == 0)
2562 p_flags1 |= PF_W;
2563 if ((m->sections[j]->flags & SEC_CODE) != 0)
2564 {
2565 p_flags1 |= PF_X;
2566 if ((elf_section_flags (m->sections[j]) & SHF_PPC_VLE) != 0)
2567 p_flags1 |= PF_PPC_VLE;
2568 if (((p_flags1 ^ p_flags) & PF_PPC_VLE) != 0)
2569 break;
2570 }
2571 p_flags |= p_flags1;
2572 }
2573 /* If we're splitting a segment which originally contained rw
2574 sections then those sections might now only be in one of the
2575 two parts. So always set p_flags if splitting, even if we
2576 are being called for objcopy with p_flags_valid set. */
2577 if (j != m->count || !m->p_flags_valid)
2578 {
2579 m->p_flags_valid = 1;
2580 m->p_flags = p_flags;
2581 }
2582 if (j == m->count)
2583 continue;
2584
2585 /* Sections 0..j-1 stay in this (current) segment,
2586 the remainder are put in a new segment.
2587 The scan resumes with the new segment. */
2588
2589 amt = sizeof (struct elf_segment_map);
2590 amt += (m->count - j - 1) * sizeof (asection *);
2591 n = (struct elf_segment_map *) bfd_zalloc (abfd, amt);
2592 if (n == NULL)
2593 return FALSE;
2594
2595 n->p_type = PT_LOAD;
2596 n->count = m->count - j;
2597 for (k = 0; k < n->count; ++k)
2598 n->sections[k] = m->sections[j + k];
2599 m->count = j;
2600 m->p_size_valid = 0;
2601 n->next = m->next;
2602 m->next = n;
2603 }
2604
2605 return TRUE;
2606 }
2607
2608 /* Add extra PPC sections -- Note, for now, make .sbss2 and
2609 .PPC.EMB.sbss0 a normal section, and not a bss section so
2610 that the linker doesn't crater when trying to make more than
2611 2 sections. */
2612
2613 static const struct bfd_elf_special_section ppc_elf_special_sections[] =
2614 {
2615 { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, SHF_ALLOC + SHF_EXECINSTR },
2616 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2617 { STRING_COMMA_LEN (".sbss2"), -2, SHT_PROGBITS, SHF_ALLOC },
2618 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2619 { STRING_COMMA_LEN (".sdata2"), -2, SHT_PROGBITS, SHF_ALLOC },
2620 { STRING_COMMA_LEN (".tags"), 0, SHT_ORDERED, SHF_ALLOC },
2621 { STRING_COMMA_LEN (APUINFO_SECTION_NAME), 0, SHT_NOTE, 0 },
2622 { STRING_COMMA_LEN (".PPC.EMB.sbss0"), 0, SHT_PROGBITS, SHF_ALLOC },
2623 { STRING_COMMA_LEN (".PPC.EMB.sdata0"), 0, SHT_PROGBITS, SHF_ALLOC },
2624 { NULL, 0, 0, 0, 0 }
2625 };
2626
2627 /* This is what we want for new plt/got. */
2628 static struct bfd_elf_special_section ppc_alt_plt =
2629 { STRING_COMMA_LEN (".plt"), 0, SHT_PROGBITS, SHF_ALLOC };
2630
2631 static const struct bfd_elf_special_section *
2632 ppc_elf_get_sec_type_attr (bfd *abfd ATTRIBUTE_UNUSED, asection *sec)
2633 {
2634 const struct bfd_elf_special_section *ssect;
2635
2636 /* See if this is one of the special sections. */
2637 if (sec->name == NULL)
2638 return NULL;
2639
2640 ssect = _bfd_elf_get_special_section (sec->name, ppc_elf_special_sections,
2641 sec->use_rela_p);
2642 if (ssect != NULL)
2643 {
2644 if (ssect == ppc_elf_special_sections && (sec->flags & SEC_LOAD) != 0)
2645 ssect = &ppc_alt_plt;
2646 return ssect;
2647 }
2648
2649 return _bfd_elf_get_sec_type_attr (abfd, sec);
2650 }
2651 \f
2652 /* Very simple linked list structure for recording apuinfo values. */
2653 typedef struct apuinfo_list
2654 {
2655 struct apuinfo_list *next;
2656 unsigned long value;
2657 }
2658 apuinfo_list;
2659
2660 static apuinfo_list *head;
2661 static bfd_boolean apuinfo_set;
2662
2663 static void
2664 apuinfo_list_init (void)
2665 {
2666 head = NULL;
2667 apuinfo_set = FALSE;
2668 }
2669
2670 static void
2671 apuinfo_list_add (unsigned long value)
2672 {
2673 apuinfo_list *entry = head;
2674
2675 while (entry != NULL)
2676 {
2677 if (entry->value == value)
2678 return;
2679 entry = entry->next;
2680 }
2681
2682 entry = bfd_malloc (sizeof (* entry));
2683 if (entry == NULL)
2684 return;
2685
2686 entry->value = value;
2687 entry->next = head;
2688 head = entry;
2689 }
2690
2691 static unsigned
2692 apuinfo_list_length (void)
2693 {
2694 apuinfo_list *entry;
2695 unsigned long count;
2696
2697 for (entry = head, count = 0;
2698 entry;
2699 entry = entry->next)
2700 ++ count;
2701
2702 return count;
2703 }
2704
2705 static inline unsigned long
2706 apuinfo_list_element (unsigned long number)
2707 {
2708 apuinfo_list * entry;
2709
2710 for (entry = head;
2711 entry && number --;
2712 entry = entry->next)
2713 ;
2714
2715 return entry ? entry->value : 0;
2716 }
2717
2718 static void
2719 apuinfo_list_finish (void)
2720 {
2721 apuinfo_list *entry;
2722
2723 for (entry = head; entry;)
2724 {
2725 apuinfo_list *next = entry->next;
2726 free (entry);
2727 entry = next;
2728 }
2729
2730 head = NULL;
2731 }
2732
2733 /* Scan the input BFDs and create a linked list of
2734 the APUinfo values that will need to be emitted. */
2735
2736 static void
2737 ppc_elf_begin_write_processing (bfd *abfd, struct bfd_link_info *link_info)
2738 {
2739 bfd *ibfd;
2740 asection *asec;
2741 char *buffer = NULL;
2742 bfd_size_type largest_input_size = 0;
2743 unsigned i;
2744 unsigned long length;
2745 const char *error_message = NULL;
2746
2747 if (link_info == NULL)
2748 return;
2749
2750 apuinfo_list_init ();
2751
2752 /* Read in the input sections contents. */
2753 for (ibfd = link_info->input_bfds; ibfd; ibfd = ibfd->link.next)
2754 {
2755 unsigned long datum;
2756
2757 asec = bfd_get_section_by_name (ibfd, APUINFO_SECTION_NAME);
2758 if (asec == NULL)
2759 continue;
2760
2761 error_message = _("corrupt %s section in %B");
2762 length = asec->size;
2763 if (length < 20)
2764 goto fail;
2765
2766 apuinfo_set = TRUE;
2767 if (largest_input_size < asec->size)
2768 {
2769 if (buffer)
2770 free (buffer);
2771 largest_input_size = asec->size;
2772 buffer = bfd_malloc (largest_input_size);
2773 if (!buffer)
2774 return;
2775 }
2776
2777 if (bfd_seek (ibfd, asec->filepos, SEEK_SET) != 0
2778 || (bfd_bread (buffer, length, ibfd) != length))
2779 {
2780 error_message = _("unable to read in %s section from %B");
2781 goto fail;
2782 }
2783
2784 /* Verify the contents of the header. Note - we have to
2785 extract the values this way in order to allow for a
2786 host whose endian-ness is different from the target. */
2787 datum = bfd_get_32 (ibfd, buffer);
2788 if (datum != sizeof APUINFO_LABEL)
2789 goto fail;
2790
2791 datum = bfd_get_32 (ibfd, buffer + 8);
2792 if (datum != 0x2)
2793 goto fail;
2794
2795 if (strcmp (buffer + 12, APUINFO_LABEL) != 0)
2796 goto fail;
2797
2798 /* Get the number of bytes used for apuinfo entries. */
2799 datum = bfd_get_32 (ibfd, buffer + 4);
2800 if (datum + 20 != length)
2801 goto fail;
2802
2803 /* Scan the apuinfo section, building a list of apuinfo numbers. */
2804 for (i = 0; i < datum; i += 4)
2805 apuinfo_list_add (bfd_get_32 (ibfd, buffer + 20 + i));
2806 }
2807
2808 error_message = NULL;
2809
2810 if (apuinfo_set)
2811 {
2812 /* Compute the size of the output section. */
2813 unsigned num_entries = apuinfo_list_length ();
2814
2815 /* Set the output section size, if it exists. */
2816 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2817
2818 if (asec && ! bfd_set_section_size (abfd, asec, 20 + num_entries * 4))
2819 {
2820 ibfd = abfd;
2821 error_message = _("warning: unable to set size of %s section in %B");
2822 }
2823 }
2824
2825 fail:
2826 if (buffer)
2827 free (buffer);
2828
2829 if (error_message)
2830 _bfd_error_handler (error_message, ibfd, APUINFO_SECTION_NAME);
2831 }
2832
2833 /* Prevent the output section from accumulating the input sections'
2834 contents. We have already stored this in our linked list structure. */
2835
2836 static bfd_boolean
2837 ppc_elf_write_section (bfd *abfd ATTRIBUTE_UNUSED,
2838 struct bfd_link_info *link_info ATTRIBUTE_UNUSED,
2839 asection *asec,
2840 bfd_byte *contents ATTRIBUTE_UNUSED)
2841 {
2842 return apuinfo_set && strcmp (asec->name, APUINFO_SECTION_NAME) == 0;
2843 }
2844
2845 /* Finally we can generate the output section. */
2846
2847 static void
2848 ppc_elf_final_write_processing (bfd *abfd, bfd_boolean linker ATTRIBUTE_UNUSED)
2849 {
2850 bfd_byte *buffer;
2851 asection *asec;
2852 unsigned i;
2853 unsigned num_entries;
2854 bfd_size_type length;
2855
2856 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2857 if (asec == NULL)
2858 return;
2859
2860 if (!apuinfo_set)
2861 return;
2862
2863 length = asec->size;
2864 if (length < 20)
2865 return;
2866
2867 buffer = bfd_malloc (length);
2868 if (buffer == NULL)
2869 {
2870 _bfd_error_handler
2871 (_("failed to allocate space for new APUinfo section."));
2872 return;
2873 }
2874
2875 /* Create the apuinfo header. */
2876 num_entries = apuinfo_list_length ();
2877 bfd_put_32 (abfd, sizeof APUINFO_LABEL, buffer);
2878 bfd_put_32 (abfd, num_entries * 4, buffer + 4);
2879 bfd_put_32 (abfd, 0x2, buffer + 8);
2880 strcpy ((char *) buffer + 12, APUINFO_LABEL);
2881
2882 length = 20;
2883 for (i = 0; i < num_entries; i++)
2884 {
2885 bfd_put_32 (abfd, apuinfo_list_element (i), buffer + length);
2886 length += 4;
2887 }
2888
2889 if (length != asec->size)
2890 _bfd_error_handler (_("failed to compute new APUinfo section."));
2891
2892 if (! bfd_set_section_contents (abfd, asec, buffer, (file_ptr) 0, length))
2893 _bfd_error_handler (_("failed to install new APUinfo section."));
2894
2895 free (buffer);
2896
2897 apuinfo_list_finish ();
2898 }
2899 \f
2900 static bfd_boolean
2901 is_nonpic_glink_stub (bfd *abfd, asection *glink, bfd_vma off)
2902 {
2903 bfd_byte buf[GLINK_ENTRY_SIZE];
2904
2905 if (!bfd_get_section_contents (abfd, glink, buf, off, GLINK_ENTRY_SIZE))
2906 return FALSE;
2907
2908 return ((bfd_get_32 (abfd, buf + 0) & 0xffff0000) == LIS_11
2909 && (bfd_get_32 (abfd, buf + 4) & 0xffff0000) == LWZ_11_11
2910 && bfd_get_32 (abfd, buf + 8) == MTCTR_11
2911 && bfd_get_32 (abfd, buf + 12) == BCTR);
2912 }
2913
2914 static bfd_boolean
2915 section_covers_vma (bfd *abfd ATTRIBUTE_UNUSED, asection *section, void *ptr)
2916 {
2917 bfd_vma vma = *(bfd_vma *) ptr;
2918 return ((section->flags & SEC_ALLOC) != 0
2919 && section->vma <= vma
2920 && vma < section->vma + section->size);
2921 }
2922
2923 static long
2924 ppc_elf_get_synthetic_symtab (bfd *abfd, long symcount, asymbol **syms,
2925 long dynsymcount, asymbol **dynsyms,
2926 asymbol **ret)
2927 {
2928 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
2929 asection *plt, *relplt, *dynamic, *glink;
2930 bfd_vma glink_vma = 0;
2931 bfd_vma resolv_vma = 0;
2932 bfd_vma stub_vma;
2933 asymbol *s;
2934 arelent *p;
2935 long count, i;
2936 size_t size;
2937 char *names;
2938 bfd_byte buf[4];
2939
2940 *ret = NULL;
2941
2942 if ((abfd->flags & (DYNAMIC | EXEC_P)) == 0)
2943 return 0;
2944
2945 if (dynsymcount <= 0)
2946 return 0;
2947
2948 relplt = bfd_get_section_by_name (abfd, ".rela.plt");
2949 if (relplt == NULL)
2950 return 0;
2951
2952 plt = bfd_get_section_by_name (abfd, ".plt");
2953 if (plt == NULL)
2954 return 0;
2955
2956 /* Call common code to handle old-style executable PLTs. */
2957 if (elf_section_flags (plt) & SHF_EXECINSTR)
2958 return _bfd_elf_get_synthetic_symtab (abfd, symcount, syms,
2959 dynsymcount, dynsyms, ret);
2960
2961 /* If this object was prelinked, the prelinker stored the address
2962 of .glink at got[1]. If it wasn't prelinked, got[1] will be zero. */
2963 dynamic = bfd_get_section_by_name (abfd, ".dynamic");
2964 if (dynamic != NULL)
2965 {
2966 bfd_byte *dynbuf, *extdyn, *extdynend;
2967 size_t extdynsize;
2968 void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *);
2969
2970 if (!bfd_malloc_and_get_section (abfd, dynamic, &dynbuf))
2971 return -1;
2972
2973 extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn;
2974 swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in;
2975
2976 extdyn = dynbuf;
2977 extdynend = extdyn + dynamic->size;
2978 for (; extdyn < extdynend; extdyn += extdynsize)
2979 {
2980 Elf_Internal_Dyn dyn;
2981 (*swap_dyn_in) (abfd, extdyn, &dyn);
2982
2983 if (dyn.d_tag == DT_NULL)
2984 break;
2985
2986 if (dyn.d_tag == DT_PPC_GOT)
2987 {
2988 unsigned int g_o_t = dyn.d_un.d_val;
2989 asection *got = bfd_get_section_by_name (abfd, ".got");
2990 if (got != NULL
2991 && bfd_get_section_contents (abfd, got, buf,
2992 g_o_t - got->vma + 4, 4))
2993 glink_vma = bfd_get_32 (abfd, buf);
2994 break;
2995 }
2996 }
2997 free (dynbuf);
2998 }
2999
3000 /* Otherwise we read the first plt entry. */
3001 if (glink_vma == 0)
3002 {
3003 if (bfd_get_section_contents (abfd, plt, buf, 0, 4))
3004 glink_vma = bfd_get_32 (abfd, buf);
3005 }
3006
3007 if (glink_vma == 0)
3008 return 0;
3009
3010 /* The .glink section usually does not survive the final
3011 link; search for the section (usually .text) where the
3012 glink stubs now reside. */
3013 glink = bfd_sections_find_if (abfd, section_covers_vma, &glink_vma);
3014 if (glink == NULL)
3015 return 0;
3016
3017 /* Determine glink PLT resolver by reading the relative branch
3018 from the first glink stub. */
3019 if (bfd_get_section_contents (abfd, glink, buf,
3020 glink_vma - glink->vma, 4))
3021 {
3022 unsigned int insn = bfd_get_32 (abfd, buf);
3023
3024 /* The first glink stub may either branch to the resolver ... */
3025 insn ^= B;
3026 if ((insn & ~0x3fffffc) == 0)
3027 resolv_vma = glink_vma + (insn ^ 0x2000000) - 0x2000000;
3028
3029 /* ... or fall through a bunch of NOPs. */
3030 else if ((insn ^ B ^ NOP) == 0)
3031 for (i = 4;
3032 bfd_get_section_contents (abfd, glink, buf,
3033 glink_vma - glink->vma + i, 4);
3034 i += 4)
3035 if (bfd_get_32 (abfd, buf) != NOP)
3036 {
3037 resolv_vma = glink_vma + i;
3038 break;
3039 }
3040 }
3041
3042 count = relplt->size / sizeof (Elf32_External_Rela);
3043 /* If the stubs are those for -shared/-pie then we might have
3044 multiple stubs for each plt entry. If that is the case then
3045 there is no way to associate stubs with their plt entries short
3046 of figuring out the GOT pointer value used in the stub. */
3047 if (!is_nonpic_glink_stub (abfd, glink,
3048 glink_vma - GLINK_ENTRY_SIZE - glink->vma))
3049 return 0;
3050
3051 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
3052 if (! (*slurp_relocs) (abfd, relplt, dynsyms, TRUE))
3053 return -1;
3054
3055 size = count * sizeof (asymbol);
3056 p = relplt->relocation;
3057 for (i = 0; i < count; i++, p++)
3058 {
3059 size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt");
3060 if (p->addend != 0)
3061 size += sizeof ("+0x") - 1 + 8;
3062 }
3063
3064 size += sizeof (asymbol) + sizeof ("__glink");
3065
3066 if (resolv_vma)
3067 size += sizeof (asymbol) + sizeof ("__glink_PLTresolve");
3068
3069 s = *ret = bfd_malloc (size);
3070 if (s == NULL)
3071 return -1;
3072
3073 stub_vma = glink_vma;
3074 names = (char *) (s + count + 1 + (resolv_vma != 0));
3075 p = relplt->relocation + count - 1;
3076 for (i = 0; i < count; i++)
3077 {
3078 size_t len;
3079
3080 *s = **p->sym_ptr_ptr;
3081 /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since
3082 we are defining a symbol, ensure one of them is set. */
3083 if ((s->flags & BSF_LOCAL) == 0)
3084 s->flags |= BSF_GLOBAL;
3085 s->flags |= BSF_SYNTHETIC;
3086 s->section = glink;
3087 stub_vma -= 16;
3088 if (strcmp ((*p->sym_ptr_ptr)->name, "__tls_get_addr_opt") == 0)
3089 stub_vma -= 32;
3090 s->value = stub_vma - glink->vma;
3091 s->name = names;
3092 s->udata.p = NULL;
3093 len = strlen ((*p->sym_ptr_ptr)->name);
3094 memcpy (names, (*p->sym_ptr_ptr)->name, len);
3095 names += len;
3096 if (p->addend != 0)
3097 {
3098 memcpy (names, "+0x", sizeof ("+0x") - 1);
3099 names += sizeof ("+0x") - 1;
3100 bfd_sprintf_vma (abfd, names, p->addend);
3101 names += strlen (names);
3102 }
3103 memcpy (names, "@plt", sizeof ("@plt"));
3104 names += sizeof ("@plt");
3105 ++s;
3106 --p;
3107 }
3108
3109 /* Add a symbol at the start of the glink branch table. */
3110 memset (s, 0, sizeof *s);
3111 s->the_bfd = abfd;
3112 s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
3113 s->section = glink;
3114 s->value = glink_vma - glink->vma;
3115 s->name = names;
3116 memcpy (names, "__glink", sizeof ("__glink"));
3117 names += sizeof ("__glink");
3118 s++;
3119 count++;
3120
3121 if (resolv_vma)
3122 {
3123 /* Add a symbol for the glink PLT resolver. */
3124 memset (s, 0, sizeof *s);
3125 s->the_bfd = abfd;
3126 s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
3127 s->section = glink;
3128 s->value = resolv_vma - glink->vma;
3129 s->name = names;
3130 memcpy (names, "__glink_PLTresolve", sizeof ("__glink_PLTresolve"));
3131 names += sizeof ("__glink_PLTresolve");
3132 s++;
3133 count++;
3134 }
3135
3136 return count;
3137 }
3138 \f
3139 /* The following functions are specific to the ELF linker, while
3140 functions above are used generally. They appear in this file more
3141 or less in the order in which they are called. eg.
3142 ppc_elf_check_relocs is called early in the link process,
3143 ppc_elf_finish_dynamic_sections is one of the last functions
3144 called. */
3145
3146 /* Track PLT entries needed for a given symbol. We might need more
3147 than one glink entry per symbol when generating a pic binary. */
3148 struct plt_entry
3149 {
3150 struct plt_entry *next;
3151
3152 /* -fPIC uses multiple GOT sections, one per file, called ".got2".
3153 This field stores the offset into .got2 used to initialise the
3154 GOT pointer reg. It will always be at least 32768. (Current
3155 gcc always uses an offset of 32768, but ld -r will pack .got2
3156 sections together resulting in larger offsets). */
3157 bfd_vma addend;
3158
3159 /* The .got2 section. */
3160 asection *sec;
3161
3162 /* PLT refcount or offset. */
3163 union
3164 {
3165 bfd_signed_vma refcount;
3166 bfd_vma offset;
3167 } plt;
3168
3169 /* .glink stub offset. */
3170 bfd_vma glink_offset;
3171 };
3172
3173 /* Of those relocs that might be copied as dynamic relocs, this function
3174 selects those that must be copied when linking a shared library,
3175 even when the symbol is local. */
3176
3177 static int
3178 must_be_dyn_reloc (struct bfd_link_info *info,
3179 enum elf_ppc_reloc_type r_type)
3180 {
3181 switch (r_type)
3182 {
3183 default:
3184 return 1;
3185
3186 case R_PPC_REL24:
3187 case R_PPC_REL14:
3188 case R_PPC_REL14_BRTAKEN:
3189 case R_PPC_REL14_BRNTAKEN:
3190 case R_PPC_REL32:
3191 return 0;
3192
3193 case R_PPC_TPREL32:
3194 case R_PPC_TPREL16:
3195 case R_PPC_TPREL16_LO:
3196 case R_PPC_TPREL16_HI:
3197 case R_PPC_TPREL16_HA:
3198 return !bfd_link_executable (info);
3199 }
3200 }
3201
3202 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
3203 copying dynamic variables from a shared lib into an app's dynbss
3204 section, and instead use a dynamic relocation to point into the
3205 shared lib. */
3206 #define ELIMINATE_COPY_RELOCS 1
3207
3208 /* Used to track dynamic relocations for local symbols. */
3209 struct ppc_dyn_relocs
3210 {
3211 struct ppc_dyn_relocs *next;
3212
3213 /* The input section of the reloc. */
3214 asection *sec;
3215
3216 /* Total number of relocs copied for the input section. */
3217 unsigned int count : 31;
3218
3219 /* Whether this entry is for STT_GNU_IFUNC symbols. */
3220 unsigned int ifunc : 1;
3221 };
3222
3223 /* PPC ELF linker hash entry. */
3224
3225 struct ppc_elf_link_hash_entry
3226 {
3227 struct elf_link_hash_entry elf;
3228
3229 /* If this symbol is used in the linker created sections, the processor
3230 specific backend uses this field to map the field into the offset
3231 from the beginning of the section. */
3232 elf_linker_section_pointers_t *linker_section_pointer;
3233
3234 /* Track dynamic relocs copied for this symbol. */
3235 struct elf_dyn_relocs *dyn_relocs;
3236
3237 /* Contexts in which symbol is used in the GOT (or TOC).
3238 TLS_GD .. TLS_TLS bits are or'd into the mask as the
3239 corresponding relocs are encountered during check_relocs.
3240 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
3241 indicate the corresponding GOT entry type is not needed. */
3242 #define TLS_GD 1 /* GD reloc. */
3243 #define TLS_LD 2 /* LD reloc. */
3244 #define TLS_TPREL 4 /* TPREL reloc, => IE. */
3245 #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
3246 #define TLS_TLS 16 /* Any TLS reloc. */
3247 #define TLS_TPRELGD 32 /* TPREL reloc resulting from GD->IE. */
3248 #define PLT_IFUNC 64 /* STT_GNU_IFUNC. */
3249 char tls_mask;
3250
3251 /* Nonzero if we have seen a small data relocation referring to this
3252 symbol. */
3253 unsigned char has_sda_refs : 1;
3254
3255 /* Flag use of given relocations. */
3256 unsigned char has_addr16_ha : 1;
3257 unsigned char has_addr16_lo : 1;
3258 };
3259
3260 #define ppc_elf_hash_entry(ent) ((struct ppc_elf_link_hash_entry *) (ent))
3261
3262 /* PPC ELF linker hash table. */
3263
3264 struct ppc_elf_link_hash_table
3265 {
3266 struct elf_link_hash_table elf;
3267
3268 /* Various options passed from the linker. */
3269 struct ppc_elf_params *params;
3270
3271 /* Short-cuts to get to dynamic linker sections. */
3272 asection *got;
3273 asection *relgot;
3274 asection *glink;
3275 asection *plt;
3276 asection *relplt;
3277 asection *iplt;
3278 asection *reliplt;
3279 asection *dynbss;
3280 asection *relbss;
3281 asection *dynsbss;
3282 asection *relsbss;
3283 elf_linker_section_t sdata[2];
3284 asection *sbss;
3285 asection *glink_eh_frame;
3286
3287 /* The (unloaded but important) .rela.plt.unloaded on VxWorks. */
3288 asection *srelplt2;
3289
3290 /* The .got.plt section (VxWorks only)*/
3291 asection *sgotplt;
3292
3293 /* Shortcut to __tls_get_addr. */
3294 struct elf_link_hash_entry *tls_get_addr;
3295
3296 /* The bfd that forced an old-style PLT. */
3297 bfd *old_bfd;
3298
3299 /* TLS local dynamic got entry handling. */
3300 union {
3301 bfd_signed_vma refcount;
3302 bfd_vma offset;
3303 } tlsld_got;
3304
3305 /* Offset of branch table to PltResolve function in glink. */
3306 bfd_vma glink_pltresolve;
3307
3308 /* Size of reserved GOT entries. */
3309 unsigned int got_header_size;
3310 /* Non-zero if allocating the header left a gap. */
3311 unsigned int got_gap;
3312
3313 /* The type of PLT we have chosen to use. */
3314 enum ppc_elf_plt_type plt_type;
3315
3316 /* True if the target system is VxWorks. */
3317 unsigned int is_vxworks:1;
3318
3319 /* The size of PLT entries. */
3320 int plt_entry_size;
3321 /* The distance between adjacent PLT slots. */
3322 int plt_slot_size;
3323 /* The size of the first PLT entry. */
3324 int plt_initial_entry_size;
3325
3326 /* Small local sym cache. */
3327 struct sym_cache sym_cache;
3328 };
3329
3330 /* Rename some of the generic section flags to better document how they
3331 are used for ppc32. The flags are only valid for ppc32 elf objects. */
3332
3333 /* Nonzero if this section has TLS related relocations. */
3334 #define has_tls_reloc sec_flg0
3335
3336 /* Nonzero if this section has a call to __tls_get_addr. */
3337 #define has_tls_get_addr_call sec_flg1
3338
3339 /* Get the PPC ELF linker hash table from a link_info structure. */
3340
3341 #define ppc_elf_hash_table(p) \
3342 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
3343 == PPC32_ELF_DATA ? ((struct ppc_elf_link_hash_table *) ((p)->hash)) : NULL)
3344
3345 /* Create an entry in a PPC ELF linker hash table. */
3346
3347 static struct bfd_hash_entry *
3348 ppc_elf_link_hash_newfunc (struct bfd_hash_entry *entry,
3349 struct bfd_hash_table *table,
3350 const char *string)
3351 {
3352 /* Allocate the structure if it has not already been allocated by a
3353 subclass. */
3354 if (entry == NULL)
3355 {
3356 entry = bfd_hash_allocate (table,
3357 sizeof (struct ppc_elf_link_hash_entry));
3358 if (entry == NULL)
3359 return entry;
3360 }
3361
3362 /* Call the allocation method of the superclass. */
3363 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
3364 if (entry != NULL)
3365 {
3366 ppc_elf_hash_entry (entry)->linker_section_pointer = NULL;
3367 ppc_elf_hash_entry (entry)->dyn_relocs = NULL;
3368 ppc_elf_hash_entry (entry)->tls_mask = 0;
3369 ppc_elf_hash_entry (entry)->has_sda_refs = 0;
3370 }
3371
3372 return entry;
3373 }
3374
3375 /* Create a PPC ELF linker hash table. */
3376
3377 static struct bfd_link_hash_table *
3378 ppc_elf_link_hash_table_create (bfd *abfd)
3379 {
3380 struct ppc_elf_link_hash_table *ret;
3381 static struct ppc_elf_params default_params
3382 = { PLT_OLD, 0, 1, 0, 0, 12, 0, 0 };
3383
3384 ret = bfd_zmalloc (sizeof (struct ppc_elf_link_hash_table));
3385 if (ret == NULL)
3386 return NULL;
3387
3388 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd,
3389 ppc_elf_link_hash_newfunc,
3390 sizeof (struct ppc_elf_link_hash_entry),
3391 PPC32_ELF_DATA))
3392 {
3393 free (ret);
3394 return NULL;
3395 }
3396
3397 ret->elf.init_plt_refcount.refcount = 0;
3398 ret->elf.init_plt_refcount.glist = NULL;
3399 ret->elf.init_plt_offset.offset = 0;
3400 ret->elf.init_plt_offset.glist = NULL;
3401
3402 ret->params = &default_params;
3403
3404 ret->sdata[0].name = ".sdata";
3405 ret->sdata[0].sym_name = "_SDA_BASE_";
3406 ret->sdata[0].bss_name = ".sbss";
3407
3408 ret->sdata[1].name = ".sdata2";
3409 ret->sdata[1].sym_name = "_SDA2_BASE_";
3410 ret->sdata[1].bss_name = ".sbss2";
3411
3412 ret->plt_entry_size = 12;
3413 ret->plt_slot_size = 8;
3414 ret->plt_initial_entry_size = 72;
3415
3416 return &ret->elf.root;
3417 }
3418
3419 /* Hook linker params into hash table. */
3420
3421 void
3422 ppc_elf_link_params (struct bfd_link_info *info, struct ppc_elf_params *params)
3423 {
3424 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
3425
3426 if (htab)
3427 htab->params = params;
3428 params->pagesize_p2 = bfd_log2 (params->pagesize);
3429 }
3430
3431 /* Create .got and the related sections. */
3432
3433 static bfd_boolean
3434 ppc_elf_create_got (bfd *abfd, struct bfd_link_info *info)
3435 {
3436 struct ppc_elf_link_hash_table *htab;
3437 asection *s;
3438 flagword flags;
3439
3440 if (!_bfd_elf_create_got_section (abfd, info))
3441 return FALSE;
3442
3443 htab = ppc_elf_hash_table (info);
3444 htab->got = s = bfd_get_linker_section (abfd, ".got");
3445 if (s == NULL)
3446 abort ();
3447
3448 if (htab->is_vxworks)
3449 {
3450 htab->sgotplt = bfd_get_linker_section (abfd, ".got.plt");
3451 if (!htab->sgotplt)
3452 abort ();
3453 }
3454 else
3455 {
3456 /* The powerpc .got has a blrl instruction in it. Mark it
3457 executable. */
3458 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS
3459 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3460 if (!bfd_set_section_flags (abfd, s, flags))
3461 return FALSE;
3462 }
3463
3464 htab->relgot = bfd_get_linker_section (abfd, ".rela.got");
3465 if (!htab->relgot)
3466 abort ();
3467
3468 return TRUE;
3469 }
3470
3471 /* Create a special linker section, used for R_PPC_EMB_SDAI16 and
3472 R_PPC_EMB_SDA2I16 pointers. These sections become part of .sdata
3473 and .sdata2. Create _SDA_BASE_ and _SDA2_BASE too. */
3474
3475 static bfd_boolean
3476 ppc_elf_create_linker_section (bfd *abfd,
3477 struct bfd_link_info *info,
3478 flagword flags,
3479 elf_linker_section_t *lsect)
3480 {
3481 asection *s;
3482
3483 flags |= (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
3484 | SEC_LINKER_CREATED);
3485
3486 s = bfd_make_section_anyway_with_flags (abfd, lsect->name, flags);
3487 if (s == NULL)
3488 return FALSE;
3489 lsect->section = s;
3490
3491 /* Define the sym on the first section of this name. */
3492 s = bfd_get_section_by_name (abfd, lsect->name);
3493
3494 lsect->sym = _bfd_elf_define_linkage_sym (abfd, info, s, lsect->sym_name);
3495 if (lsect->sym == NULL)
3496 return FALSE;
3497 lsect->sym->root.u.def.value = 0x8000;
3498 return TRUE;
3499 }
3500
3501 static bfd_boolean
3502 ppc_elf_create_glink (bfd *abfd, struct bfd_link_info *info)
3503 {
3504 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
3505 asection *s;
3506 flagword flags;
3507
3508 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY | SEC_HAS_CONTENTS
3509 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3510 s = bfd_make_section_anyway_with_flags (abfd, ".glink", flags);
3511 htab->glink = s;
3512 if (s == NULL
3513 || !bfd_set_section_alignment (abfd, s,
3514 htab->params->ppc476_workaround ? 6 : 4))
3515 return FALSE;
3516
3517 if (!info->no_ld_generated_unwind_info)
3518 {
3519 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
3520 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3521 s = bfd_make_section_anyway_with_flags (abfd, ".eh_frame", flags);
3522 htab->glink_eh_frame = s;
3523 if (s == NULL
3524 || !bfd_set_section_alignment (abfd, s, 2))
3525 return FALSE;
3526 }
3527
3528 flags = SEC_ALLOC | SEC_LINKER_CREATED;
3529 s = bfd_make_section_anyway_with_flags (abfd, ".iplt", flags);
3530 htab->iplt = s;
3531 if (s == NULL
3532 || !bfd_set_section_alignment (abfd, s, 4))
3533 return FALSE;
3534
3535 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
3536 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3537 s = bfd_make_section_anyway_with_flags (abfd, ".rela.iplt", flags);
3538 htab->reliplt = s;
3539 if (s == NULL
3540 || ! bfd_set_section_alignment (abfd, s, 2))
3541 return FALSE;
3542
3543 if (!ppc_elf_create_linker_section (abfd, info, 0,
3544 &htab->sdata[0]))
3545 return FALSE;
3546
3547 if (!ppc_elf_create_linker_section (abfd, info, SEC_READONLY,
3548 &htab->sdata[1]))
3549 return FALSE;
3550
3551 return TRUE;
3552 }
3553
3554 /* We have to create .dynsbss and .rela.sbss here so that they get mapped
3555 to output sections (just like _bfd_elf_create_dynamic_sections has
3556 to create .dynbss and .rela.bss). */
3557
3558 static bfd_boolean
3559 ppc_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
3560 {
3561 struct ppc_elf_link_hash_table *htab;
3562 asection *s;
3563 flagword flags;
3564
3565 htab = ppc_elf_hash_table (info);
3566
3567 if (htab->got == NULL
3568 && !ppc_elf_create_got (abfd, info))
3569 return FALSE;
3570
3571 if (!_bfd_elf_create_dynamic_sections (abfd, info))
3572 return FALSE;
3573
3574 if (htab->glink == NULL
3575 && !ppc_elf_create_glink (abfd, info))
3576 return FALSE;
3577
3578 htab->dynbss = bfd_get_linker_section (abfd, ".dynbss");
3579 s = bfd_make_section_anyway_with_flags (abfd, ".dynsbss",
3580 SEC_ALLOC | SEC_LINKER_CREATED);
3581 htab->dynsbss = s;
3582 if (s == NULL)
3583 return FALSE;
3584
3585 if (! bfd_link_pic (info))
3586 {
3587 htab->relbss = bfd_get_linker_section (abfd, ".rela.bss");
3588 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
3589 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3590 s = bfd_make_section_anyway_with_flags (abfd, ".rela.sbss", flags);
3591 htab->relsbss = s;
3592 if (s == NULL
3593 || ! bfd_set_section_alignment (abfd, s, 2))
3594 return FALSE;
3595 }
3596
3597 if (htab->is_vxworks
3598 && !elf_vxworks_create_dynamic_sections (abfd, info, &htab->srelplt2))
3599 return FALSE;
3600
3601 htab->relplt = bfd_get_linker_section (abfd, ".rela.plt");
3602 htab->plt = s = bfd_get_linker_section (abfd, ".plt");
3603 if (s == NULL)
3604 abort ();
3605
3606 flags = SEC_ALLOC | SEC_CODE | SEC_LINKER_CREATED;
3607 if (htab->plt_type == PLT_VXWORKS)
3608 /* The VxWorks PLT is a loaded section with contents. */
3609 flags |= SEC_HAS_CONTENTS | SEC_LOAD | SEC_READONLY;
3610 return bfd_set_section_flags (abfd, s, flags);
3611 }
3612
3613 /* Copy the extra info we tack onto an elf_link_hash_entry. */
3614
3615 static void
3616 ppc_elf_copy_indirect_symbol (struct bfd_link_info *info,
3617 struct elf_link_hash_entry *dir,
3618 struct elf_link_hash_entry *ind)
3619 {
3620 struct ppc_elf_link_hash_entry *edir, *eind;
3621
3622 edir = (struct ppc_elf_link_hash_entry *) dir;
3623 eind = (struct ppc_elf_link_hash_entry *) ind;
3624
3625 edir->tls_mask |= eind->tls_mask;
3626 edir->has_sda_refs |= eind->has_sda_refs;
3627
3628 /* If called to transfer flags for a weakdef during processing
3629 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
3630 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
3631 if (!(ELIMINATE_COPY_RELOCS
3632 && eind->elf.root.type != bfd_link_hash_indirect
3633 && edir->elf.dynamic_adjusted))
3634 edir->elf.non_got_ref |= eind->elf.non_got_ref;
3635
3636 edir->elf.ref_dynamic |= eind->elf.ref_dynamic;
3637 edir->elf.ref_regular |= eind->elf.ref_regular;
3638 edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak;
3639 edir->elf.needs_plt |= eind->elf.needs_plt;
3640 edir->elf.pointer_equality_needed |= eind->elf.pointer_equality_needed;
3641
3642 if (eind->dyn_relocs != NULL)
3643 {
3644 if (edir->dyn_relocs != NULL)
3645 {
3646 struct elf_dyn_relocs **pp;
3647 struct elf_dyn_relocs *p;
3648
3649 /* Add reloc counts against the indirect sym to the direct sym
3650 list. Merge any entries against the same section. */
3651 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
3652 {
3653 struct elf_dyn_relocs *q;
3654
3655 for (q = edir->dyn_relocs; q != NULL; q = q->next)
3656 if (q->sec == p->sec)
3657 {
3658 q->pc_count += p->pc_count;
3659 q->count += p->count;
3660 *pp = p->next;
3661 break;
3662 }
3663 if (q == NULL)
3664 pp = &p->next;
3665 }
3666 *pp = edir->dyn_relocs;
3667 }
3668
3669 edir->dyn_relocs = eind->dyn_relocs;
3670 eind->dyn_relocs = NULL;
3671 }
3672
3673 /* If we were called to copy over info for a weak sym, that's all.
3674 You might think dyn_relocs need not be copied over; After all,
3675 both syms will be dynamic or both non-dynamic so we're just
3676 moving reloc accounting around. However, ELIMINATE_COPY_RELOCS
3677 code in ppc_elf_adjust_dynamic_symbol needs to check for
3678 dyn_relocs in read-only sections, and it does so on what is the
3679 DIR sym here. */
3680 if (eind->elf.root.type != bfd_link_hash_indirect)
3681 return;
3682
3683 /* Copy over the GOT refcount entries that we may have already seen to
3684 the symbol which just became indirect. */
3685 edir->elf.got.refcount += eind->elf.got.refcount;
3686 eind->elf.got.refcount = 0;
3687
3688 /* And plt entries. */
3689 if (eind->elf.plt.plist != NULL)
3690 {
3691 if (edir->elf.plt.plist != NULL)
3692 {
3693 struct plt_entry **entp;
3694 struct plt_entry *ent;
3695
3696 for (entp = &eind->elf.plt.plist; (ent = *entp) != NULL; )
3697 {
3698 struct plt_entry *dent;
3699
3700 for (dent = edir->elf.plt.plist; dent != NULL; dent = dent->next)
3701 if (dent->sec == ent->sec && dent->addend == ent->addend)
3702 {
3703 dent->plt.refcount += ent->plt.refcount;
3704 *entp = ent->next;
3705 break;
3706 }
3707 if (dent == NULL)
3708 entp = &ent->next;
3709 }
3710 *entp = edir->elf.plt.plist;
3711 }
3712
3713 edir->elf.plt.plist = eind->elf.plt.plist;
3714 eind->elf.plt.plist = NULL;
3715 }
3716
3717 if (eind->elf.dynindx != -1)
3718 {
3719 if (edir->elf.dynindx != -1)
3720 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
3721 edir->elf.dynstr_index);
3722 edir->elf.dynindx = eind->elf.dynindx;
3723 edir->elf.dynstr_index = eind->elf.dynstr_index;
3724 eind->elf.dynindx = -1;
3725 eind->elf.dynstr_index = 0;
3726 }
3727 }
3728
3729 /* Hook called by the linker routine which adds symbols from an object
3730 file. We use it to put .comm items in .sbss, and not .bss. */
3731
3732 static bfd_boolean
3733 ppc_elf_add_symbol_hook (bfd *abfd,
3734 struct bfd_link_info *info,
3735 Elf_Internal_Sym *sym,
3736 const char **namep ATTRIBUTE_UNUSED,
3737 flagword *flagsp ATTRIBUTE_UNUSED,
3738 asection **secp,
3739 bfd_vma *valp)
3740 {
3741 if (sym->st_shndx == SHN_COMMON
3742 && !bfd_link_relocatable (info)
3743 && is_ppc_elf (info->output_bfd)
3744 && sym->st_size <= elf_gp_size (abfd))
3745 {
3746 /* Common symbols less than or equal to -G nn bytes are automatically
3747 put into .sbss. */
3748 struct ppc_elf_link_hash_table *htab;
3749
3750 htab = ppc_elf_hash_table (info);
3751 if (htab->sbss == NULL)
3752 {
3753 flagword flags = SEC_IS_COMMON | SEC_LINKER_CREATED;
3754
3755 if (!htab->elf.dynobj)
3756 htab->elf.dynobj = abfd;
3757
3758 htab->sbss = bfd_make_section_anyway_with_flags (htab->elf.dynobj,
3759 ".sbss",
3760 flags);
3761 if (htab->sbss == NULL)
3762 return FALSE;
3763 }
3764
3765 *secp = htab->sbss;
3766 *valp = sym->st_size;
3767 }
3768
3769 if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC
3770 && (abfd->flags & DYNAMIC) == 0
3771 && bfd_get_flavour (info->output_bfd) == bfd_target_elf_flavour)
3772 elf_tdata (info->output_bfd)->has_gnu_symbols |= elf_gnu_symbol_ifunc;
3773
3774 return TRUE;
3775 }
3776 \f
3777 /* Find a linker generated pointer with a given addend and type. */
3778
3779 static elf_linker_section_pointers_t *
3780 elf_find_pointer_linker_section
3781 (elf_linker_section_pointers_t *linker_pointers,
3782 bfd_vma addend,
3783 elf_linker_section_t *lsect)
3784 {
3785 for ( ; linker_pointers != NULL; linker_pointers = linker_pointers->next)
3786 if (lsect == linker_pointers->lsect && addend == linker_pointers->addend)
3787 return linker_pointers;
3788
3789 return NULL;
3790 }
3791
3792 /* Allocate a pointer to live in a linker created section. */
3793
3794 static bfd_boolean
3795 elf_allocate_pointer_linker_section (bfd *abfd,
3796 elf_linker_section_t *lsect,
3797 struct elf_link_hash_entry *h,
3798 const Elf_Internal_Rela *rel)
3799 {
3800 elf_linker_section_pointers_t **ptr_linker_section_ptr = NULL;
3801 elf_linker_section_pointers_t *linker_section_ptr;
3802 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
3803 bfd_size_type amt;
3804
3805 BFD_ASSERT (lsect != NULL);
3806
3807 /* Is this a global symbol? */
3808 if (h != NULL)
3809 {
3810 struct ppc_elf_link_hash_entry *eh;
3811
3812 /* Has this symbol already been allocated? If so, our work is done. */
3813 eh = (struct ppc_elf_link_hash_entry *) h;
3814 if (elf_find_pointer_linker_section (eh->linker_section_pointer,
3815 rel->r_addend,
3816 lsect))
3817 return TRUE;
3818
3819 ptr_linker_section_ptr = &eh->linker_section_pointer;
3820 }
3821 else
3822 {
3823 BFD_ASSERT (is_ppc_elf (abfd));
3824
3825 /* Allocation of a pointer to a local symbol. */
3826 elf_linker_section_pointers_t **ptr = elf_local_ptr_offsets (abfd);
3827
3828 /* Allocate a table to hold the local symbols if first time. */
3829 if (!ptr)
3830 {
3831 unsigned int num_symbols = elf_symtab_hdr (abfd).sh_info;
3832
3833 amt = num_symbols;
3834 amt *= sizeof (elf_linker_section_pointers_t *);
3835 ptr = bfd_zalloc (abfd, amt);
3836
3837 if (!ptr)
3838 return FALSE;
3839
3840 elf_local_ptr_offsets (abfd) = ptr;
3841 }
3842
3843 /* Has this symbol already been allocated? If so, our work is done. */
3844 if (elf_find_pointer_linker_section (ptr[r_symndx],
3845 rel->r_addend,
3846 lsect))
3847 return TRUE;
3848
3849 ptr_linker_section_ptr = &ptr[r_symndx];
3850 }
3851
3852 /* Allocate space for a pointer in the linker section, and allocate
3853 a new pointer record from internal memory. */
3854 BFD_ASSERT (ptr_linker_section_ptr != NULL);
3855 amt = sizeof (elf_linker_section_pointers_t);
3856 linker_section_ptr = bfd_alloc (abfd, amt);
3857
3858 if (!linker_section_ptr)
3859 return FALSE;
3860
3861 linker_section_ptr->next = *ptr_linker_section_ptr;
3862 linker_section_ptr->addend = rel->r_addend;
3863 linker_section_ptr->lsect = lsect;
3864 *ptr_linker_section_ptr = linker_section_ptr;
3865
3866 if (!bfd_set_section_alignment (lsect->section->owner, lsect->section, 2))
3867 return FALSE;
3868 linker_section_ptr->offset = lsect->section->size;
3869 lsect->section->size += 4;
3870
3871 #ifdef DEBUG
3872 fprintf (stderr,
3873 "Create pointer in linker section %s, offset = %ld, section size = %ld\n",
3874 lsect->name, (long) linker_section_ptr->offset,
3875 (long) lsect->section->size);
3876 #endif
3877
3878 return TRUE;
3879 }
3880
3881 static struct plt_entry **
3882 update_local_sym_info (bfd *abfd,
3883 Elf_Internal_Shdr *symtab_hdr,
3884 unsigned long r_symndx,
3885 int tls_type)
3886 {
3887 bfd_signed_vma *local_got_refcounts = elf_local_got_refcounts (abfd);
3888 struct plt_entry **local_plt;
3889 char *local_got_tls_masks;
3890
3891 if (local_got_refcounts == NULL)
3892 {
3893 bfd_size_type size = symtab_hdr->sh_info;
3894
3895 size *= (sizeof (*local_got_refcounts)
3896 + sizeof (*local_plt)
3897 + sizeof (*local_got_tls_masks));
3898 local_got_refcounts = bfd_zalloc (abfd, size);
3899 if (local_got_refcounts == NULL)
3900 return NULL;
3901 elf_local_got_refcounts (abfd) = local_got_refcounts;
3902 }
3903
3904 local_plt = (struct plt_entry **) (local_got_refcounts + symtab_hdr->sh_info);
3905 local_got_tls_masks = (char *) (local_plt + symtab_hdr->sh_info);
3906 local_got_tls_masks[r_symndx] |= tls_type;
3907 if (tls_type != PLT_IFUNC)
3908 local_got_refcounts[r_symndx] += 1;
3909 return local_plt + r_symndx;
3910 }
3911
3912 static bfd_boolean
3913 update_plt_info (bfd *abfd, struct plt_entry **plist,
3914 asection *sec, bfd_vma addend)
3915 {
3916 struct plt_entry *ent;
3917
3918 if (addend < 32768)
3919 sec = NULL;
3920 for (ent = *plist; ent != NULL; ent = ent->next)
3921 if (ent->sec == sec && ent->addend == addend)
3922 break;
3923 if (ent == NULL)
3924 {
3925 bfd_size_type amt = sizeof (*ent);
3926 ent = bfd_alloc (abfd, amt);
3927 if (ent == NULL)
3928 return FALSE;
3929 ent->next = *plist;
3930 ent->sec = sec;
3931 ent->addend = addend;
3932 ent->plt.refcount = 0;
3933 *plist = ent;
3934 }
3935 ent->plt.refcount += 1;
3936 return TRUE;
3937 }
3938
3939 static struct plt_entry *
3940 find_plt_ent (struct plt_entry **plist, asection *sec, bfd_vma addend)
3941 {
3942 struct plt_entry *ent;
3943
3944 if (addend < 32768)
3945 sec = NULL;
3946 for (ent = *plist; ent != NULL; ent = ent->next)
3947 if (ent->sec == sec && ent->addend == addend)
3948 break;
3949 return ent;
3950 }
3951
3952 static bfd_boolean
3953 is_branch_reloc (enum elf_ppc_reloc_type r_type)
3954 {
3955 return (r_type == R_PPC_PLTREL24
3956 || r_type == R_PPC_LOCAL24PC
3957 || r_type == R_PPC_REL24
3958 || r_type == R_PPC_REL14
3959 || r_type == R_PPC_REL14_BRTAKEN
3960 || r_type == R_PPC_REL14_BRNTAKEN
3961 || r_type == R_PPC_ADDR24
3962 || r_type == R_PPC_ADDR14
3963 || r_type == R_PPC_ADDR14_BRTAKEN
3964 || r_type == R_PPC_ADDR14_BRNTAKEN
3965 || r_type == R_PPC_VLE_REL24);
3966 }
3967
3968 static void
3969 bad_shared_reloc (bfd *abfd, enum elf_ppc_reloc_type r_type)
3970 {
3971 _bfd_error_handler
3972 (_("%B: relocation %s cannot be used when making a shared object"),
3973 abfd,
3974 ppc_elf_howto_table[r_type]->name);
3975 bfd_set_error (bfd_error_bad_value);
3976 }
3977
3978 /* Look through the relocs for a section during the first phase, and
3979 allocate space in the global offset table or procedure linkage
3980 table. */
3981
3982 static bfd_boolean
3983 ppc_elf_check_relocs (bfd *abfd,
3984 struct bfd_link_info *info,
3985 asection *sec,
3986 const Elf_Internal_Rela *relocs)
3987 {
3988 struct ppc_elf_link_hash_table *htab;
3989 Elf_Internal_Shdr *symtab_hdr;
3990 struct elf_link_hash_entry **sym_hashes;
3991 const Elf_Internal_Rela *rel;
3992 const Elf_Internal_Rela *rel_end;
3993 asection *got2, *sreloc;
3994 struct elf_link_hash_entry *tga;
3995
3996 if (bfd_link_relocatable (info))
3997 return TRUE;
3998
3999 /* Don't do anything special with non-loaded, non-alloced sections.
4000 In particular, any relocs in such sections should not affect GOT
4001 and PLT reference counting (ie. we don't allow them to create GOT
4002 or PLT entries), there's no possibility or desire to optimize TLS
4003 relocs, and there's not much point in propagating relocs to shared
4004 libs that the dynamic linker won't relocate. */
4005 if ((sec->flags & SEC_ALLOC) == 0)
4006 return TRUE;
4007
4008 #ifdef DEBUG
4009 _bfd_error_handler ("ppc_elf_check_relocs called for section %A in %B",
4010 sec, abfd);
4011 #endif
4012
4013 BFD_ASSERT (is_ppc_elf (abfd));
4014
4015 /* Initialize howto table if not already done. */
4016 if (!ppc_elf_howto_table[R_PPC_ADDR32])
4017 ppc_elf_howto_init ();
4018
4019 htab = ppc_elf_hash_table (info);
4020 if (htab->glink == NULL)
4021 {
4022 if (htab->elf.dynobj == NULL)
4023 htab->elf.dynobj = abfd;
4024 if (!ppc_elf_create_glink (htab->elf.dynobj, info))
4025 return FALSE;
4026 }
4027 tga = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
4028 FALSE, FALSE, TRUE);
4029 symtab_hdr = &elf_symtab_hdr (abfd);
4030 sym_hashes = elf_sym_hashes (abfd);
4031 got2 = bfd_get_section_by_name (abfd, ".got2");
4032 sreloc = NULL;
4033
4034 rel_end = relocs + sec->reloc_count;
4035 for (rel = relocs; rel < rel_end; rel++)
4036 {
4037 unsigned long r_symndx;
4038 enum elf_ppc_reloc_type r_type;
4039 struct elf_link_hash_entry *h;
4040 int tls_type;
4041 struct plt_entry **ifunc;
4042
4043 r_symndx = ELF32_R_SYM (rel->r_info);
4044 if (r_symndx < symtab_hdr->sh_info)
4045 h = NULL;
4046 else
4047 {
4048 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4049 while (h->root.type == bfd_link_hash_indirect
4050 || h->root.type == bfd_link_hash_warning)
4051 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4052
4053 /* PR15323, ref flags aren't set for references in the same
4054 object. */
4055 h->root.non_ir_ref = 1;
4056 }
4057
4058 /* If a relocation refers to _GLOBAL_OFFSET_TABLE_, create the .got.
4059 This shows up in particular in an R_PPC_ADDR32 in the eabi
4060 startup code. */
4061 if (h != NULL
4062 && htab->got == NULL
4063 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
4064 {
4065 if (htab->elf.dynobj == NULL)
4066 htab->elf.dynobj = abfd;
4067 if (!ppc_elf_create_got (htab->elf.dynobj, info))
4068 return FALSE;
4069 BFD_ASSERT (h == htab->elf.hgot);
4070 }
4071
4072 tls_type = 0;
4073 r_type = ELF32_R_TYPE (rel->r_info);
4074 ifunc = NULL;
4075 if (h == NULL && !htab->is_vxworks)
4076 {
4077 Elf_Internal_Sym *isym = bfd_sym_from_r_symndx (&htab->sym_cache,
4078 abfd, r_symndx);
4079 if (isym == NULL)
4080 return FALSE;
4081
4082 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
4083 {
4084 /* Set PLT_IFUNC flag for this sym, no GOT entry yet. */
4085 ifunc = update_local_sym_info (abfd, symtab_hdr, r_symndx,
4086 PLT_IFUNC);
4087 if (ifunc == NULL)
4088 return FALSE;
4089
4090 /* STT_GNU_IFUNC symbols must have a PLT entry;
4091 In a non-pie executable even when there are
4092 no plt calls. */
4093 if (!bfd_link_pic (info)
4094 || is_branch_reloc (r_type))
4095 {
4096 bfd_vma addend = 0;
4097 if (r_type == R_PPC_PLTREL24)
4098 {
4099 ppc_elf_tdata (abfd)->makes_plt_call = 1;
4100 if (bfd_link_pic (info))
4101 addend = rel->r_addend;
4102 }
4103 if (!update_plt_info (abfd, ifunc, got2, addend))
4104 return FALSE;
4105 }
4106 }
4107 }
4108
4109 if (!htab->is_vxworks
4110 && is_branch_reloc (r_type)
4111 && h != NULL
4112 && h == tga)
4113 {
4114 if (rel != relocs
4115 && (ELF32_R_TYPE (rel[-1].r_info) == R_PPC_TLSGD
4116 || ELF32_R_TYPE (rel[-1].r_info) == R_PPC_TLSLD))
4117 /* We have a new-style __tls_get_addr call with a marker
4118 reloc. */
4119 ;
4120 else
4121 /* Mark this section as having an old-style call. */
4122 sec->has_tls_get_addr_call = 1;
4123 }
4124
4125 switch (r_type)
4126 {
4127 case R_PPC_TLSGD:
4128 case R_PPC_TLSLD:
4129 /* These special tls relocs tie a call to __tls_get_addr with
4130 its parameter symbol. */
4131 break;
4132
4133 case R_PPC_GOT_TLSLD16:
4134 case R_PPC_GOT_TLSLD16_LO:
4135 case R_PPC_GOT_TLSLD16_HI:
4136 case R_PPC_GOT_TLSLD16_HA:
4137 tls_type = TLS_TLS | TLS_LD;
4138 goto dogottls;
4139
4140 case R_PPC_GOT_TLSGD16:
4141 case R_PPC_GOT_TLSGD16_LO:
4142 case R_PPC_GOT_TLSGD16_HI:
4143 case R_PPC_GOT_TLSGD16_HA:
4144 tls_type = TLS_TLS | TLS_GD;
4145 goto dogottls;
4146
4147 case R_PPC_GOT_TPREL16:
4148 case R_PPC_GOT_TPREL16_LO:
4149 case R_PPC_GOT_TPREL16_HI:
4150 case R_PPC_GOT_TPREL16_HA:
4151 if (bfd_link_pic (info))
4152 info->flags |= DF_STATIC_TLS;
4153 tls_type = TLS_TLS | TLS_TPREL;
4154 goto dogottls;
4155
4156 case R_PPC_GOT_DTPREL16:
4157 case R_PPC_GOT_DTPREL16_LO:
4158 case R_PPC_GOT_DTPREL16_HI:
4159 case R_PPC_GOT_DTPREL16_HA:
4160 tls_type = TLS_TLS | TLS_DTPREL;
4161 dogottls:
4162 sec->has_tls_reloc = 1;
4163 /* Fall through. */
4164
4165 /* GOT16 relocations */
4166 case R_PPC_GOT16:
4167 case R_PPC_GOT16_LO:
4168 case R_PPC_GOT16_HI:
4169 case R_PPC_GOT16_HA:
4170 /* This symbol requires a global offset table entry. */
4171 if (htab->got == NULL)
4172 {
4173 if (htab->elf.dynobj == NULL)
4174 htab->elf.dynobj = abfd;
4175 if (!ppc_elf_create_got (htab->elf.dynobj, info))
4176 return FALSE;
4177 }
4178 if (h != NULL)
4179 {
4180 h->got.refcount += 1;
4181 ppc_elf_hash_entry (h)->tls_mask |= tls_type;
4182 }
4183 else
4184 /* This is a global offset table entry for a local symbol. */
4185 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, tls_type))
4186 return FALSE;
4187
4188 /* We may also need a plt entry if the symbol turns out to be
4189 an ifunc. */
4190 if (h != NULL && !bfd_link_pic (info))
4191 {
4192 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
4193 return FALSE;
4194 }
4195 break;
4196
4197 /* Indirect .sdata relocation. */
4198 case R_PPC_EMB_SDAI16:
4199 if (bfd_link_pic (info))
4200 {
4201 bad_shared_reloc (abfd, r_type);
4202 return FALSE;
4203 }
4204 htab->sdata[0].sym->ref_regular = 1;
4205 if (!elf_allocate_pointer_linker_section (abfd, &htab->sdata[0],
4206 h, rel))
4207 return FALSE;
4208 if (h != NULL)
4209 {
4210 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4211 h->non_got_ref = TRUE;
4212 }
4213 break;
4214
4215 /* Indirect .sdata2 relocation. */
4216 case R_PPC_EMB_SDA2I16:
4217 if (bfd_link_pic (info))
4218 {
4219 bad_shared_reloc (abfd, r_type);
4220 return FALSE;
4221 }
4222 htab->sdata[1].sym->ref_regular = 1;
4223 if (!elf_allocate_pointer_linker_section (abfd, &htab->sdata[1],
4224 h, rel))
4225 return FALSE;
4226 if (h != NULL)
4227 {
4228 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4229 h->non_got_ref = TRUE;
4230 }
4231 break;
4232
4233 case R_PPC_SDAREL16:
4234 htab->sdata[0].sym->ref_regular = 1;
4235 /* Fall through. */
4236
4237 case R_PPC_VLE_SDAREL_LO16A:
4238 case R_PPC_VLE_SDAREL_LO16D:
4239 case R_PPC_VLE_SDAREL_HI16A:
4240 case R_PPC_VLE_SDAREL_HI16D:
4241 case R_PPC_VLE_SDAREL_HA16A:
4242 case R_PPC_VLE_SDAREL_HA16D:
4243 if (h != NULL)
4244 {
4245 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4246 h->non_got_ref = TRUE;
4247 }
4248 break;
4249
4250 case R_PPC_VLE_REL8:
4251 case R_PPC_VLE_REL15:
4252 case R_PPC_VLE_REL24:
4253 case R_PPC_VLE_LO16A:
4254 case R_PPC_VLE_LO16D:
4255 case R_PPC_VLE_HI16A:
4256 case R_PPC_VLE_HI16D:
4257 case R_PPC_VLE_HA16A:
4258 case R_PPC_VLE_HA16D:
4259 break;
4260
4261 case R_PPC_EMB_SDA2REL:
4262 if (bfd_link_pic (info))
4263 {
4264 bad_shared_reloc (abfd, r_type);
4265 return FALSE;
4266 }
4267 htab->sdata[1].sym->ref_regular = 1;
4268 if (h != NULL)
4269 {
4270 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4271 h->non_got_ref = TRUE;
4272 }
4273 break;
4274
4275 case R_PPC_VLE_SDA21_LO:
4276 case R_PPC_VLE_SDA21:
4277 case R_PPC_EMB_SDA21:
4278 case R_PPC_EMB_RELSDA:
4279 if (bfd_link_pic (info))
4280 {
4281 bad_shared_reloc (abfd, r_type);
4282 return FALSE;
4283 }
4284 if (h != NULL)
4285 {
4286 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4287 h->non_got_ref = TRUE;
4288 }
4289 break;
4290
4291 case R_PPC_EMB_NADDR32:
4292 case R_PPC_EMB_NADDR16:
4293 case R_PPC_EMB_NADDR16_LO:
4294 case R_PPC_EMB_NADDR16_HI:
4295 case R_PPC_EMB_NADDR16_HA:
4296 if (bfd_link_pic (info))
4297 {
4298 bad_shared_reloc (abfd, r_type);
4299 return FALSE;
4300 }
4301 if (h != NULL)
4302 h->non_got_ref = TRUE;
4303 break;
4304
4305 case R_PPC_PLTREL24:
4306 if (h == NULL)
4307 break;
4308 /* Fall through */
4309 case R_PPC_PLT32:
4310 case R_PPC_PLTREL32:
4311 case R_PPC_PLT16_LO:
4312 case R_PPC_PLT16_HI:
4313 case R_PPC_PLT16_HA:
4314 #ifdef DEBUG
4315 fprintf (stderr, "Reloc requires a PLT entry\n");
4316 #endif
4317 /* This symbol requires a procedure linkage table entry. */
4318 if (h == NULL)
4319 {
4320 if (ifunc == NULL)
4321 {
4322 /* It does not make sense to have a procedure linkage
4323 table entry for a non-ifunc local symbol. */
4324 info->callbacks->einfo
4325 (_("%P: %H: %s reloc against local symbol\n"),
4326 abfd, sec, rel->r_offset,
4327 ppc_elf_howto_table[r_type]->name);
4328 bfd_set_error (bfd_error_bad_value);
4329 return FALSE;
4330 }
4331 }
4332 else
4333 {
4334 bfd_vma addend = 0;
4335
4336 if (r_type == R_PPC_PLTREL24)
4337 {
4338 ppc_elf_tdata (abfd)->makes_plt_call = 1;
4339 if (bfd_link_pic (info))
4340 addend = rel->r_addend;
4341 }
4342 h->needs_plt = 1;
4343 if (!update_plt_info (abfd, &h->plt.plist, got2, addend))
4344 return FALSE;
4345 }
4346 break;
4347
4348 /* The following relocations don't need to propagate the
4349 relocation if linking a shared object since they are
4350 section relative. */
4351 case R_PPC_SECTOFF:
4352 case R_PPC_SECTOFF_LO:
4353 case R_PPC_SECTOFF_HI:
4354 case R_PPC_SECTOFF_HA:
4355 case R_PPC_DTPREL16:
4356 case R_PPC_DTPREL16_LO:
4357 case R_PPC_DTPREL16_HI:
4358 case R_PPC_DTPREL16_HA:
4359 case R_PPC_TOC16:
4360 break;
4361
4362 case R_PPC_REL16:
4363 case R_PPC_REL16_LO:
4364 case R_PPC_REL16_HI:
4365 case R_PPC_REL16_HA:
4366 case R_PPC_REL16DX_HA:
4367 ppc_elf_tdata (abfd)->has_rel16 = 1;
4368 break;
4369
4370 /* These are just markers. */
4371 case R_PPC_TLS:
4372 case R_PPC_EMB_MRKREF:
4373 case R_PPC_NONE:
4374 case R_PPC_max:
4375 case R_PPC_RELAX:
4376 case R_PPC_RELAX_PLT:
4377 case R_PPC_RELAX_PLTREL24:
4378 break;
4379
4380 /* These should only appear in dynamic objects. */
4381 case R_PPC_COPY:
4382 case R_PPC_GLOB_DAT:
4383 case R_PPC_JMP_SLOT:
4384 case R_PPC_RELATIVE:
4385 case R_PPC_IRELATIVE:
4386 break;
4387
4388 /* These aren't handled yet. We'll report an error later. */
4389 case R_PPC_ADDR30:
4390 case R_PPC_EMB_RELSEC16:
4391 case R_PPC_EMB_RELST_LO:
4392 case R_PPC_EMB_RELST_HI:
4393 case R_PPC_EMB_RELST_HA:
4394 case R_PPC_EMB_BIT_FLD:
4395 break;
4396
4397 /* This refers only to functions defined in the shared library. */
4398 case R_PPC_LOCAL24PC:
4399 if (h != NULL && h == htab->elf.hgot && htab->plt_type == PLT_UNSET)
4400 {
4401 htab->plt_type = PLT_OLD;
4402 htab->old_bfd = abfd;
4403 }
4404 if (h != NULL && h->type == STT_GNU_IFUNC)
4405 {
4406 h->needs_plt = 1;
4407 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
4408 return FALSE;
4409 }
4410 break;
4411
4412 /* This relocation describes the C++ object vtable hierarchy.
4413 Reconstruct it for later use during GC. */
4414 case R_PPC_GNU_VTINHERIT:
4415 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
4416 return FALSE;
4417 break;
4418
4419 /* This relocation describes which C++ vtable entries are actually
4420 used. Record for later use during GC. */
4421 case R_PPC_GNU_VTENTRY:
4422 BFD_ASSERT (h != NULL);
4423 if (h != NULL
4424 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
4425 return FALSE;
4426 break;
4427
4428 /* We shouldn't really be seeing these. */
4429 case R_PPC_TPREL32:
4430 case R_PPC_TPREL16:
4431 case R_PPC_TPREL16_LO:
4432 case R_PPC_TPREL16_HI:
4433 case R_PPC_TPREL16_HA:
4434 if (bfd_link_pic (info))
4435 info->flags |= DF_STATIC_TLS;
4436 goto dodyn;
4437
4438 /* Nor these. */
4439 case R_PPC_DTPMOD32:
4440 case R_PPC_DTPREL32:
4441 goto dodyn;
4442
4443 case R_PPC_REL32:
4444 if (h == NULL
4445 && got2 != NULL
4446 && (sec->flags & SEC_CODE) != 0
4447 && bfd_link_pic (info)
4448 && htab->plt_type == PLT_UNSET)
4449 {
4450 /* Old -fPIC gcc code has .long LCTOC1-LCFx just before
4451 the start of a function, which assembles to a REL32
4452 reference to .got2. If we detect one of these, then
4453 force the old PLT layout because the linker cannot
4454 reliably deduce the GOT pointer value needed for
4455 PLT call stubs. */
4456 asection *s;
4457 Elf_Internal_Sym *isym;
4458
4459 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
4460 abfd, r_symndx);
4461 if (isym == NULL)
4462 return FALSE;
4463
4464 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
4465 if (s == got2)
4466 {
4467 htab->plt_type = PLT_OLD;
4468 htab->old_bfd = abfd;
4469 }
4470 }
4471 if (h == NULL || h == htab->elf.hgot)
4472 break;
4473 /* fall through */
4474
4475 case R_PPC_ADDR32:
4476 case R_PPC_ADDR16:
4477 case R_PPC_ADDR16_LO:
4478 case R_PPC_ADDR16_HI:
4479 case R_PPC_ADDR16_HA:
4480 case R_PPC_UADDR32:
4481 case R_PPC_UADDR16:
4482 if (h != NULL && !bfd_link_pic (info))
4483 {
4484 /* We may need a plt entry if the symbol turns out to be
4485 a function defined in a dynamic object. */
4486 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
4487 return FALSE;
4488
4489 /* We may need a copy reloc too. */
4490 h->non_got_ref = 1;
4491 h->pointer_equality_needed = 1;
4492 if (r_type == R_PPC_ADDR16_HA)
4493 ppc_elf_hash_entry (h)->has_addr16_ha = 1;
4494 if (r_type == R_PPC_ADDR16_LO)
4495 ppc_elf_hash_entry (h)->has_addr16_lo = 1;
4496 }
4497 goto dodyn;
4498
4499 case R_PPC_REL24:
4500 case R_PPC_REL14:
4501 case R_PPC_REL14_BRTAKEN:
4502 case R_PPC_REL14_BRNTAKEN:
4503 if (h == NULL)
4504 break;
4505 if (h == htab->elf.hgot)
4506 {
4507 if (htab->plt_type == PLT_UNSET)
4508 {
4509 htab->plt_type = PLT_OLD;
4510 htab->old_bfd = abfd;
4511 }
4512 break;
4513 }
4514 /* fall through */
4515
4516 case R_PPC_ADDR24:
4517 case R_PPC_ADDR14:
4518 case R_PPC_ADDR14_BRTAKEN:
4519 case R_PPC_ADDR14_BRNTAKEN:
4520 if (h != NULL && !bfd_link_pic (info))
4521 {
4522 /* We may need a plt entry if the symbol turns out to be
4523 a function defined in a dynamic object. */
4524 h->needs_plt = 1;
4525 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
4526 return FALSE;
4527 break;
4528 }
4529
4530 dodyn:
4531 /* If we are creating a shared library, and this is a reloc
4532 against a global symbol, or a non PC relative reloc
4533 against a local symbol, then we need to copy the reloc
4534 into the shared library. However, if we are linking with
4535 -Bsymbolic, we do not need to copy a reloc against a
4536 global symbol which is defined in an object we are
4537 including in the link (i.e., DEF_REGULAR is set). At
4538 this point we have not seen all the input files, so it is
4539 possible that DEF_REGULAR is not set now but will be set
4540 later (it is never cleared). In case of a weak definition,
4541 DEF_REGULAR may be cleared later by a strong definition in
4542 a shared library. We account for that possibility below by
4543 storing information in the dyn_relocs field of the hash
4544 table entry. A similar situation occurs when creating
4545 shared libraries and symbol visibility changes render the
4546 symbol local.
4547
4548 If on the other hand, we are creating an executable, we
4549 may need to keep relocations for symbols satisfied by a
4550 dynamic library if we manage to avoid copy relocs for the
4551 symbol. */
4552 if ((bfd_link_pic (info)
4553 && (must_be_dyn_reloc (info, r_type)
4554 || (h != NULL
4555 && (!SYMBOLIC_BIND (info, h)
4556 || h->root.type == bfd_link_hash_defweak
4557 || !h->def_regular))))
4558 || (ELIMINATE_COPY_RELOCS
4559 && !bfd_link_pic (info)
4560 && h != NULL
4561 && (h->root.type == bfd_link_hash_defweak
4562 || !h->def_regular)))
4563 {
4564 #ifdef DEBUG
4565 fprintf (stderr,
4566 "ppc_elf_check_relocs needs to "
4567 "create relocation for %s\n",
4568 (h && h->root.root.string
4569 ? h->root.root.string : "<unknown>"));
4570 #endif
4571 if (sreloc == NULL)
4572 {
4573 if (htab->elf.dynobj == NULL)
4574 htab->elf.dynobj = abfd;
4575
4576 sreloc = _bfd_elf_make_dynamic_reloc_section
4577 (sec, htab->elf.dynobj, 2, abfd, /*rela?*/ TRUE);
4578
4579 if (sreloc == NULL)
4580 return FALSE;
4581 }
4582
4583 /* If this is a global symbol, we count the number of
4584 relocations we need for this symbol. */
4585 if (h != NULL)
4586 {
4587 struct elf_dyn_relocs *p;
4588 struct elf_dyn_relocs **rel_head;
4589
4590 rel_head = &ppc_elf_hash_entry (h)->dyn_relocs;
4591 p = *rel_head;
4592 if (p == NULL || p->sec != sec)
4593 {
4594 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
4595 if (p == NULL)
4596 return FALSE;
4597 p->next = *rel_head;
4598 *rel_head = p;
4599 p->sec = sec;
4600 p->count = 0;
4601 p->pc_count = 0;
4602 }
4603 p->count += 1;
4604 if (!must_be_dyn_reloc (info, r_type))
4605 p->pc_count += 1;
4606 }
4607 else
4608 {
4609 /* Track dynamic relocs needed for local syms too.
4610 We really need local syms available to do this
4611 easily. Oh well. */
4612 struct ppc_dyn_relocs *p;
4613 struct ppc_dyn_relocs **rel_head;
4614 bfd_boolean is_ifunc;
4615 asection *s;
4616 void *vpp;
4617 Elf_Internal_Sym *isym;
4618
4619 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
4620 abfd, r_symndx);
4621 if (isym == NULL)
4622 return FALSE;
4623
4624 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
4625 if (s == NULL)
4626 s = sec;
4627
4628 vpp = &elf_section_data (s)->local_dynrel;
4629 rel_head = (struct ppc_dyn_relocs **) vpp;
4630 is_ifunc = ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC;
4631 p = *rel_head;
4632 if (p != NULL && p->sec == sec && p->ifunc != is_ifunc)
4633 p = p->next;
4634 if (p == NULL || p->sec != sec || p->ifunc != is_ifunc)
4635 {
4636 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
4637 if (p == NULL)
4638 return FALSE;
4639 p->next = *rel_head;
4640 *rel_head = p;
4641 p->sec = sec;
4642 p->ifunc = is_ifunc;
4643 p->count = 0;
4644 }
4645 p->count += 1;
4646 }
4647 }
4648
4649 break;
4650 }
4651 }
4652
4653 return TRUE;
4654 }
4655 \f
4656 /* Warn for conflicting Tag_GNU_Power_ABI_FP attributes between IBFD
4657 and OBFD, and merge non-conflicting ones. */
4658 void
4659 _bfd_elf_ppc_merge_fp_attributes (bfd *ibfd, struct bfd_link_info *info)
4660 {
4661 bfd *obfd = info->output_bfd;
4662 obj_attribute *in_attr, *in_attrs;
4663 obj_attribute *out_attr, *out_attrs;
4664
4665 in_attrs = elf_known_obj_attributes (ibfd)[OBJ_ATTR_GNU];
4666 out_attrs = elf_known_obj_attributes (obfd)[OBJ_ATTR_GNU];
4667
4668 in_attr = &in_attrs[Tag_GNU_Power_ABI_FP];
4669 out_attr = &out_attrs[Tag_GNU_Power_ABI_FP];
4670
4671 if (in_attr->i != out_attr->i)
4672 {
4673 int in_fp = in_attr->i & 3;
4674 int out_fp = out_attr->i & 3;
4675
4676 if (in_fp == 0)
4677 ;
4678 else if (out_fp == 0)
4679 {
4680 out_attr->type = 1;
4681 out_attr->i ^= in_fp;
4682 }
4683 else if (out_fp != 2 && in_fp == 2)
4684 _bfd_error_handler
4685 (_("Warning: %B uses hard float, %B uses soft float"), obfd, ibfd);
4686 else if (out_fp == 2 && in_fp != 2)
4687 _bfd_error_handler
4688 (_("Warning: %B uses hard float, %B uses soft float"), ibfd, obfd);
4689 else if (out_fp == 1 && in_fp == 3)
4690 _bfd_error_handler
4691 (_("Warning: %B uses double-precision hard float, "
4692 "%B uses single-precision hard float"), obfd, ibfd);
4693 else if (out_fp == 3 && in_fp == 1)
4694 _bfd_error_handler
4695 (_("Warning: %B uses double-precision hard float, "
4696 "%B uses single-precision hard float"), ibfd, obfd);
4697
4698 in_fp = in_attr->i & 0xc;
4699 out_fp = out_attr->i & 0xc;
4700 if (in_fp == 0)
4701 ;
4702 else if (out_fp == 0)
4703 {
4704 out_attr->type = 1;
4705 out_attr->i ^= in_fp;
4706 }
4707 else if (out_fp != 2 * 4 && in_fp == 2 * 4)
4708 _bfd_error_handler
4709 (_("Warning: %B uses 64-bit long double, "
4710 "%B uses 128-bit long double"), ibfd, obfd);
4711 else if (in_fp != 2 * 4 && out_fp == 2 * 4)
4712 _bfd_error_handler
4713 (_("Warning: %B uses 64-bit long double, "
4714 "%B uses 128-bit long double"), obfd, ibfd);
4715 else if (out_fp == 1 * 4 && in_fp == 3 * 4)
4716 _bfd_error_handler
4717 (_("Warning: %B uses IBM long double, "
4718 "%B uses IEEE long double"), ibfd, obfd);
4719 else if (out_fp == 3 * 4 && in_fp == 1 * 4)
4720 _bfd_error_handler
4721 (_("Warning: %B uses IBM long double, "
4722 "%B uses IEEE long double"), obfd, ibfd);
4723 }
4724 }
4725
4726 /* Merge object attributes from IBFD into OBFD. Warn if
4727 there are conflicting attributes. */
4728 static bfd_boolean
4729 ppc_elf_merge_obj_attributes (bfd *ibfd, struct bfd_link_info *info)
4730 {
4731 bfd *obfd;
4732 obj_attribute *in_attr, *in_attrs;
4733 obj_attribute *out_attr, *out_attrs;
4734
4735 _bfd_elf_ppc_merge_fp_attributes (ibfd, info);
4736
4737 obfd = info->output_bfd;
4738 in_attrs = elf_known_obj_attributes (ibfd)[OBJ_ATTR_GNU];
4739 out_attrs = elf_known_obj_attributes (obfd)[OBJ_ATTR_GNU];
4740
4741 /* Check for conflicting Tag_GNU_Power_ABI_Vector attributes and
4742 merge non-conflicting ones. */
4743 in_attr = &in_attrs[Tag_GNU_Power_ABI_Vector];
4744 out_attr = &out_attrs[Tag_GNU_Power_ABI_Vector];
4745 if (in_attr->i != out_attr->i)
4746 {
4747 int in_vec = in_attr->i & 3;
4748 int out_vec = out_attr->i & 3;
4749
4750 if (in_vec == 0)
4751 ;
4752 else if (out_vec == 0)
4753 {
4754 out_attr->type = 1;
4755 out_attr->i = in_vec;
4756 }
4757 /* For now, allow generic to transition to AltiVec or SPE
4758 without a warning. If GCC marked files with their stack
4759 alignment and used don't-care markings for files which are
4760 not affected by the vector ABI, we could warn about this
4761 case too. */
4762 else if (in_vec == 1)
4763 ;
4764 else if (out_vec == 1)
4765 {
4766 out_attr->type = 1;
4767 out_attr->i = in_vec;
4768 }
4769 else if (out_vec < in_vec)
4770 _bfd_error_handler
4771 (_("Warning: %B uses AltiVec vector ABI, %B uses SPE vector ABI"),
4772 obfd, ibfd);
4773 else if (out_vec > in_vec)
4774 _bfd_error_handler
4775 (_("Warning: %B uses AltiVec vector ABI, %B uses SPE vector ABI"),
4776 ibfd, obfd);
4777 }
4778
4779 /* Check for conflicting Tag_GNU_Power_ABI_Struct_Return attributes
4780 and merge non-conflicting ones. */
4781 in_attr = &in_attrs[Tag_GNU_Power_ABI_Struct_Return];
4782 out_attr = &out_attrs[Tag_GNU_Power_ABI_Struct_Return];
4783 if (in_attr->i != out_attr->i)
4784 {
4785 int in_struct = in_attr->i & 3;
4786 int out_struct = out_attr->i & 3;
4787
4788 if (in_struct == 0 || in_struct == 3)
4789 ;
4790 else if (out_struct == 0)
4791 {
4792 out_attr->type = 1;
4793 out_attr->i = in_struct;
4794 }
4795 else if (out_struct < in_struct)
4796 _bfd_error_handler
4797 (_("Warning: %B uses r3/r4 for small structure returns, "
4798 "%B uses memory"), obfd, ibfd);
4799 else if (out_struct > in_struct)
4800 _bfd_error_handler
4801 (_("Warning: %B uses r3/r4 for small structure returns, "
4802 "%B uses memory"), ibfd, obfd);
4803 }
4804
4805 /* Merge Tag_compatibility attributes and any common GNU ones. */
4806 _bfd_elf_merge_object_attributes (ibfd, info);
4807
4808 return TRUE;
4809 }
4810
4811 /* Merge backend specific data from an object file to the output
4812 object file when linking. */
4813
4814 static bfd_boolean
4815 ppc_elf_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info)
4816 {
4817 bfd *obfd = info->output_bfd;
4818 flagword old_flags;
4819 flagword new_flags;
4820 bfd_boolean error;
4821
4822 if (!is_ppc_elf (ibfd) || !is_ppc_elf (obfd))
4823 return TRUE;
4824
4825 /* Check if we have the same endianness. */
4826 if (! _bfd_generic_verify_endian_match (ibfd, info))
4827 return FALSE;
4828
4829 if (!ppc_elf_merge_obj_attributes (ibfd, info))
4830 return FALSE;
4831
4832 new_flags = elf_elfheader (ibfd)->e_flags;
4833 old_flags = elf_elfheader (obfd)->e_flags;
4834 if (!elf_flags_init (obfd))
4835 {
4836 /* First call, no flags set. */
4837 elf_flags_init (obfd) = TRUE;
4838 elf_elfheader (obfd)->e_flags = new_flags;
4839 }
4840
4841 /* Compatible flags are ok. */
4842 else if (new_flags == old_flags)
4843 ;
4844
4845 /* Incompatible flags. */
4846 else
4847 {
4848 /* Warn about -mrelocatable mismatch. Allow -mrelocatable-lib
4849 to be linked with either. */
4850 error = FALSE;
4851 if ((new_flags & EF_PPC_RELOCATABLE) != 0
4852 && (old_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0)
4853 {
4854 error = TRUE;
4855 _bfd_error_handler
4856 (_("%B: compiled with -mrelocatable and linked with "
4857 "modules compiled normally"), ibfd);
4858 }
4859 else if ((new_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0
4860 && (old_flags & EF_PPC_RELOCATABLE) != 0)
4861 {
4862 error = TRUE;
4863 _bfd_error_handler
4864 (_("%B: compiled normally and linked with "
4865 "modules compiled with -mrelocatable"), ibfd);
4866 }
4867
4868 /* The output is -mrelocatable-lib iff both the input files are. */
4869 if (! (new_flags & EF_PPC_RELOCATABLE_LIB))
4870 elf_elfheader (obfd)->e_flags &= ~EF_PPC_RELOCATABLE_LIB;
4871
4872 /* The output is -mrelocatable iff it can't be -mrelocatable-lib,
4873 but each input file is either -mrelocatable or -mrelocatable-lib. */
4874 if (! (elf_elfheader (obfd)->e_flags & EF_PPC_RELOCATABLE_LIB)
4875 && (new_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE))
4876 && (old_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE)))
4877 elf_elfheader (obfd)->e_flags |= EF_PPC_RELOCATABLE;
4878
4879 /* Do not warn about eabi vs. V.4 mismatch, just or in the bit if
4880 any module uses it. */
4881 elf_elfheader (obfd)->e_flags |= (new_flags & EF_PPC_EMB);
4882
4883 new_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
4884 old_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
4885
4886 /* Warn about any other mismatches. */
4887 if (new_flags != old_flags)
4888 {
4889 error = TRUE;
4890 _bfd_error_handler
4891 (_("%B: uses different e_flags (0x%lx) fields "
4892 "than previous modules (0x%lx)"),
4893 ibfd, (long) new_flags, (long) old_flags);
4894 }
4895
4896 if (error)
4897 {
4898 bfd_set_error (bfd_error_bad_value);
4899 return FALSE;
4900 }
4901 }
4902
4903 return TRUE;
4904 }
4905
4906 static void
4907 ppc_elf_vle_split16 (bfd *output_bfd, bfd_byte *loc,
4908 bfd_vma value,
4909 split16_format_type split16_format)
4910
4911 {
4912 unsigned int insn, top5;
4913
4914 insn = bfd_get_32 (output_bfd, loc);
4915 top5 = value & 0xf800;
4916 top5 = top5 << (split16_format == split16a_type ? 9 : 5);
4917 insn &= (split16_format == split16a_type ? ~0x1f007ff : ~0x1f07ff);
4918 insn |= top5;
4919 insn |= value & 0x7ff;
4920 bfd_put_32 (output_bfd, insn, loc);
4921 }
4922
4923 \f
4924 /* Choose which PLT scheme to use, and set .plt flags appropriately.
4925 Returns -1 on error, 0 for old PLT, 1 for new PLT. */
4926 int
4927 ppc_elf_select_plt_layout (bfd *output_bfd ATTRIBUTE_UNUSED,
4928 struct bfd_link_info *info)
4929 {
4930 struct ppc_elf_link_hash_table *htab;
4931 flagword flags;
4932
4933 htab = ppc_elf_hash_table (info);
4934
4935 if (htab->plt_type == PLT_UNSET)
4936 {
4937 struct elf_link_hash_entry *h;
4938
4939 if (htab->params->plt_style == PLT_OLD)
4940 htab->plt_type = PLT_OLD;
4941 else if (bfd_link_pic (info)
4942 && htab->elf.dynamic_sections_created
4943 && (h = elf_link_hash_lookup (&htab->elf, "_mcount",
4944 FALSE, FALSE, TRUE)) != NULL
4945 && (h->type == STT_FUNC
4946 || h->needs_plt)
4947 && h->ref_regular
4948 && !(SYMBOL_CALLS_LOCAL (info, h)
4949 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
4950 && h->root.type == bfd_link_hash_undefweak)))
4951 {
4952 /* Profiling of shared libs (and pies) is not supported with
4953 secure plt, because ppc32 does profiling before a
4954 function prologue and a secure plt pic call stubs needs
4955 r30 to be set up. */
4956 htab->plt_type = PLT_OLD;
4957 }
4958 else
4959 {
4960 bfd *ibfd;
4961 enum ppc_elf_plt_type plt_type = htab->params->plt_style;
4962
4963 /* Look through the reloc flags left by ppc_elf_check_relocs.
4964 Use the old style bss plt if a file makes plt calls
4965 without using the new relocs, and if ld isn't given
4966 --secure-plt and we never see REL16 relocs. */
4967 if (plt_type == PLT_UNSET)
4968 plt_type = PLT_OLD;
4969 for (ibfd = info->input_bfds; ibfd; ibfd = ibfd->link.next)
4970 if (is_ppc_elf (ibfd))
4971 {
4972 if (ppc_elf_tdata (ibfd)->has_rel16)
4973 plt_type = PLT_NEW;
4974 else if (ppc_elf_tdata (ibfd)->makes_plt_call)
4975 {
4976 plt_type = PLT_OLD;
4977 htab->old_bfd = ibfd;
4978 break;
4979 }
4980 }
4981 htab->plt_type = plt_type;
4982 }
4983 }
4984 if (htab->plt_type == PLT_OLD && htab->params->plt_style == PLT_NEW)
4985 {
4986 if (htab->old_bfd != NULL)
4987 info->callbacks->einfo (_("%P: bss-plt forced due to %B\n"),
4988 htab->old_bfd);
4989 else
4990 info->callbacks->einfo (_("%P: bss-plt forced by profiling\n"));
4991 }
4992
4993 BFD_ASSERT (htab->plt_type != PLT_VXWORKS);
4994
4995 if (htab->plt_type == PLT_NEW)
4996 {
4997 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
4998 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4999
5000 /* The new PLT is a loaded section. */
5001 if (htab->plt != NULL
5002 && !bfd_set_section_flags (htab->elf.dynobj, htab->plt, flags))
5003 return -1;
5004
5005 /* The new GOT is not executable. */
5006 if (htab->got != NULL
5007 && !bfd_set_section_flags (htab->elf.dynobj, htab->got, flags))
5008 return -1;
5009 }
5010 else
5011 {
5012 /* Stop an unused .glink section from affecting .text alignment. */
5013 if (htab->glink != NULL
5014 && !bfd_set_section_alignment (htab->elf.dynobj, htab->glink, 0))
5015 return -1;
5016 }
5017 return htab->plt_type == PLT_NEW;
5018 }
5019 \f
5020 /* Return the section that should be marked against GC for a given
5021 relocation. */
5022
5023 static asection *
5024 ppc_elf_gc_mark_hook (asection *sec,
5025 struct bfd_link_info *info,
5026 Elf_Internal_Rela *rel,
5027 struct elf_link_hash_entry *h,
5028 Elf_Internal_Sym *sym)
5029 {
5030 if (h != NULL)
5031 switch (ELF32_R_TYPE (rel->r_info))
5032 {
5033 case R_PPC_GNU_VTINHERIT:
5034 case R_PPC_GNU_VTENTRY:
5035 return NULL;
5036 }
5037
5038 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
5039 }
5040
5041 /* Update the got, plt and dynamic reloc reference counts for the
5042 section being removed. */
5043
5044 static bfd_boolean
5045 ppc_elf_gc_sweep_hook (bfd *abfd,
5046 struct bfd_link_info *info,
5047 asection *sec,
5048 const Elf_Internal_Rela *relocs)
5049 {
5050 struct ppc_elf_link_hash_table *htab;
5051 Elf_Internal_Shdr *symtab_hdr;
5052 struct elf_link_hash_entry **sym_hashes;
5053 bfd_signed_vma *local_got_refcounts;
5054 const Elf_Internal_Rela *rel, *relend;
5055 asection *got2;
5056
5057 if (bfd_link_relocatable (info))
5058 return TRUE;
5059
5060 if ((sec->flags & SEC_ALLOC) == 0)
5061 return TRUE;
5062
5063 elf_section_data (sec)->local_dynrel = NULL;
5064
5065 htab = ppc_elf_hash_table (info);
5066 symtab_hdr = &elf_symtab_hdr (abfd);
5067 sym_hashes = elf_sym_hashes (abfd);
5068 local_got_refcounts = elf_local_got_refcounts (abfd);
5069 got2 = bfd_get_section_by_name (abfd, ".got2");
5070
5071 relend = relocs + sec->reloc_count;
5072 for (rel = relocs; rel < relend; rel++)
5073 {
5074 unsigned long r_symndx;
5075 enum elf_ppc_reloc_type r_type;
5076 struct elf_link_hash_entry *h = NULL;
5077
5078 r_symndx = ELF32_R_SYM (rel->r_info);
5079 if (r_symndx >= symtab_hdr->sh_info)
5080 {
5081 struct elf_dyn_relocs **pp, *p;
5082 struct ppc_elf_link_hash_entry *eh;
5083
5084 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5085 while (h->root.type == bfd_link_hash_indirect
5086 || h->root.type == bfd_link_hash_warning)
5087 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5088 eh = (struct ppc_elf_link_hash_entry *) h;
5089
5090 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
5091 if (p->sec == sec)
5092 {
5093 /* Everything must go for SEC. */
5094 *pp = p->next;
5095 break;
5096 }
5097 }
5098
5099 r_type = ELF32_R_TYPE (rel->r_info);
5100 if (!htab->is_vxworks
5101 && h == NULL
5102 && local_got_refcounts != NULL
5103 && (!bfd_link_pic (info)
5104 || is_branch_reloc (r_type)))
5105 {
5106 struct plt_entry **local_plt = (struct plt_entry **)
5107 (local_got_refcounts + symtab_hdr->sh_info);
5108 char *local_got_tls_masks = (char *)
5109 (local_plt + symtab_hdr->sh_info);
5110 if ((local_got_tls_masks[r_symndx] & PLT_IFUNC) != 0)
5111 {
5112 struct plt_entry **ifunc = local_plt + r_symndx;
5113 bfd_vma addend = 0;
5114 struct plt_entry *ent;
5115
5116 if (r_type == R_PPC_PLTREL24 && bfd_link_pic (info))
5117 addend = rel->r_addend;
5118 ent = find_plt_ent (ifunc, got2, addend);
5119 if (ent->plt.refcount > 0)
5120 ent->plt.refcount -= 1;
5121 continue;
5122 }
5123 }
5124
5125 switch (r_type)
5126 {
5127 case R_PPC_GOT_TLSLD16:
5128 case R_PPC_GOT_TLSLD16_LO:
5129 case R_PPC_GOT_TLSLD16_HI:
5130 case R_PPC_GOT_TLSLD16_HA:
5131 case R_PPC_GOT_TLSGD16:
5132 case R_PPC_GOT_TLSGD16_LO:
5133 case R_PPC_GOT_TLSGD16_HI:
5134 case R_PPC_GOT_TLSGD16_HA:
5135 case R_PPC_GOT_TPREL16:
5136 case R_PPC_GOT_TPREL16_LO:
5137 case R_PPC_GOT_TPREL16_HI:
5138 case R_PPC_GOT_TPREL16_HA:
5139 case R_PPC_GOT_DTPREL16:
5140 case R_PPC_GOT_DTPREL16_LO:
5141 case R_PPC_GOT_DTPREL16_HI:
5142 case R_PPC_GOT_DTPREL16_HA:
5143 case R_PPC_GOT16:
5144 case R_PPC_GOT16_LO:
5145 case R_PPC_GOT16_HI:
5146 case R_PPC_GOT16_HA:
5147 if (h != NULL)
5148 {
5149 if (h->got.refcount > 0)
5150 h->got.refcount--;
5151 if (!bfd_link_pic (info))
5152 {
5153 struct plt_entry *ent;
5154
5155 ent = find_plt_ent (&h->plt.plist, NULL, 0);
5156 if (ent != NULL && ent->plt.refcount > 0)
5157 ent->plt.refcount -= 1;
5158 }
5159 }
5160 else if (local_got_refcounts != NULL)
5161 {
5162 if (local_got_refcounts[r_symndx] > 0)
5163 local_got_refcounts[r_symndx]--;
5164 }
5165 break;
5166
5167 case R_PPC_REL24:
5168 case R_PPC_REL14:
5169 case R_PPC_REL14_BRTAKEN:
5170 case R_PPC_REL14_BRNTAKEN:
5171 case R_PPC_REL32:
5172 if (h == NULL || h == htab->elf.hgot)
5173 break;
5174 /* Fall through. */
5175
5176 case R_PPC_ADDR32:
5177 case R_PPC_ADDR24:
5178 case R_PPC_ADDR16:
5179 case R_PPC_ADDR16_LO:
5180 case R_PPC_ADDR16_HI:
5181 case R_PPC_ADDR16_HA:
5182 case R_PPC_ADDR14:
5183 case R_PPC_ADDR14_BRTAKEN:
5184 case R_PPC_ADDR14_BRNTAKEN:
5185 case R_PPC_UADDR32:
5186 case R_PPC_UADDR16:
5187 if (bfd_link_pic (info))
5188 break;
5189 /* Fall through. */
5190
5191 case R_PPC_PLT32:
5192 case R_PPC_PLTREL24:
5193 case R_PPC_PLTREL32:
5194 case R_PPC_PLT16_LO:
5195 case R_PPC_PLT16_HI:
5196 case R_PPC_PLT16_HA:
5197 if (h != NULL)
5198 {
5199 bfd_vma addend = 0;
5200 struct plt_entry *ent;
5201
5202 if (r_type == R_PPC_PLTREL24 && bfd_link_pic (info))
5203 addend = rel->r_addend;
5204 ent = find_plt_ent (&h->plt.plist, got2, addend);
5205 if (ent != NULL && ent->plt.refcount > 0)
5206 ent->plt.refcount -= 1;
5207 }
5208 break;
5209
5210 default:
5211 break;
5212 }
5213 }
5214 return TRUE;
5215 }
5216 \f
5217 /* Set plt output section type, htab->tls_get_addr, and call the
5218 generic ELF tls_setup function. */
5219
5220 asection *
5221 ppc_elf_tls_setup (bfd *obfd, struct bfd_link_info *info)
5222 {
5223 struct ppc_elf_link_hash_table *htab;
5224
5225 htab = ppc_elf_hash_table (info);
5226 htab->tls_get_addr = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
5227 FALSE, FALSE, TRUE);
5228 if (htab->plt_type != PLT_NEW)
5229 htab->params->no_tls_get_addr_opt = TRUE;
5230
5231 if (!htab->params->no_tls_get_addr_opt)
5232 {
5233 struct elf_link_hash_entry *opt, *tga;
5234 opt = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_opt",
5235 FALSE, FALSE, TRUE);
5236 if (opt != NULL
5237 && (opt->root.type == bfd_link_hash_defined
5238 || opt->root.type == bfd_link_hash_defweak))
5239 {
5240 /* If glibc supports an optimized __tls_get_addr call stub,
5241 signalled by the presence of __tls_get_addr_opt, and we'll
5242 be calling __tls_get_addr via a plt call stub, then
5243 make __tls_get_addr point to __tls_get_addr_opt. */
5244 tga = htab->tls_get_addr;
5245 if (htab->elf.dynamic_sections_created
5246 && tga != NULL
5247 && (tga->type == STT_FUNC
5248 || tga->needs_plt)
5249 && !(SYMBOL_CALLS_LOCAL (info, tga)
5250 || (ELF_ST_VISIBILITY (tga->other) != STV_DEFAULT
5251 && tga->root.type == bfd_link_hash_undefweak)))
5252 {
5253 struct plt_entry *ent;
5254 for (ent = tga->plt.plist; ent != NULL; ent = ent->next)
5255 if (ent->plt.refcount > 0)
5256 break;
5257 if (ent != NULL)
5258 {
5259 tga->root.type = bfd_link_hash_indirect;
5260 tga->root.u.i.link = &opt->root;
5261 ppc_elf_copy_indirect_symbol (info, opt, tga);
5262 opt->forced_local = 0;
5263 if (opt->dynindx != -1)
5264 {
5265 /* Use __tls_get_addr_opt in dynamic relocations. */
5266 opt->dynindx = -1;
5267 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
5268 opt->dynstr_index);
5269 if (!bfd_elf_link_record_dynamic_symbol (info, opt))
5270 return FALSE;
5271 }
5272 htab->tls_get_addr = opt;
5273 }
5274 }
5275 }
5276 else
5277 htab->params->no_tls_get_addr_opt = TRUE;
5278 }
5279 if (htab->plt_type == PLT_NEW
5280 && htab->plt != NULL
5281 && htab->plt->output_section != NULL)
5282 {
5283 elf_section_type (htab->plt->output_section) = SHT_PROGBITS;
5284 elf_section_flags (htab->plt->output_section) = SHF_ALLOC + SHF_WRITE;
5285 }
5286
5287 return _bfd_elf_tls_setup (obfd, info);
5288 }
5289
5290 /* Return TRUE iff REL is a branch reloc with a global symbol matching
5291 HASH. */
5292
5293 static bfd_boolean
5294 branch_reloc_hash_match (const bfd *ibfd,
5295 const Elf_Internal_Rela *rel,
5296 const struct elf_link_hash_entry *hash)
5297 {
5298 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
5299 enum elf_ppc_reloc_type r_type = ELF32_R_TYPE (rel->r_info);
5300 unsigned int r_symndx = ELF32_R_SYM (rel->r_info);
5301
5302 if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type))
5303 {
5304 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
5305 struct elf_link_hash_entry *h;
5306
5307 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5308 while (h->root.type == bfd_link_hash_indirect
5309 || h->root.type == bfd_link_hash_warning)
5310 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5311 if (h == hash)
5312 return TRUE;
5313 }
5314 return FALSE;
5315 }
5316
5317 /* Run through all the TLS relocs looking for optimization
5318 opportunities. */
5319
5320 bfd_boolean
5321 ppc_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED,
5322 struct bfd_link_info *info)
5323 {
5324 bfd *ibfd;
5325 asection *sec;
5326 struct ppc_elf_link_hash_table *htab;
5327 int pass;
5328
5329 if (!bfd_link_executable (info))
5330 return TRUE;
5331
5332 htab = ppc_elf_hash_table (info);
5333 if (htab == NULL)
5334 return FALSE;
5335
5336 /* Make two passes through the relocs. First time check that tls
5337 relocs involved in setting up a tls_get_addr call are indeed
5338 followed by such a call. If they are not, don't do any tls
5339 optimization. On the second pass twiddle tls_mask flags to
5340 notify relocate_section that optimization can be done, and
5341 adjust got and plt refcounts. */
5342 for (pass = 0; pass < 2; ++pass)
5343 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
5344 {
5345 Elf_Internal_Sym *locsyms = NULL;
5346 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
5347 asection *got2 = bfd_get_section_by_name (ibfd, ".got2");
5348
5349 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
5350 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
5351 {
5352 Elf_Internal_Rela *relstart, *rel, *relend;
5353 int expecting_tls_get_addr = 0;
5354
5355 /* Read the relocations. */
5356 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
5357 info->keep_memory);
5358 if (relstart == NULL)
5359 return FALSE;
5360
5361 relend = relstart + sec->reloc_count;
5362 for (rel = relstart; rel < relend; rel++)
5363 {
5364 enum elf_ppc_reloc_type r_type;
5365 unsigned long r_symndx;
5366 struct elf_link_hash_entry *h = NULL;
5367 char *tls_mask;
5368 char tls_set, tls_clear;
5369 bfd_boolean is_local;
5370 bfd_signed_vma *got_count;
5371
5372 r_symndx = ELF32_R_SYM (rel->r_info);
5373 if (r_symndx >= symtab_hdr->sh_info)
5374 {
5375 struct elf_link_hash_entry **sym_hashes;
5376
5377 sym_hashes = elf_sym_hashes (ibfd);
5378 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5379 while (h->root.type == bfd_link_hash_indirect
5380 || h->root.type == bfd_link_hash_warning)
5381 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5382 }
5383
5384 is_local = FALSE;
5385 if (h == NULL
5386 || !h->def_dynamic)
5387 is_local = TRUE;
5388
5389 r_type = ELF32_R_TYPE (rel->r_info);
5390 /* If this section has old-style __tls_get_addr calls
5391 without marker relocs, then check that each
5392 __tls_get_addr call reloc is preceded by a reloc
5393 that conceivably belongs to the __tls_get_addr arg
5394 setup insn. If we don't find matching arg setup
5395 relocs, don't do any tls optimization. */
5396 if (pass == 0
5397 && sec->has_tls_get_addr_call
5398 && h != NULL
5399 && h == htab->tls_get_addr
5400 && !expecting_tls_get_addr
5401 && is_branch_reloc (r_type))
5402 {
5403 info->callbacks->minfo ("%H __tls_get_addr lost arg, "
5404 "TLS optimization disabled\n",
5405 ibfd, sec, rel->r_offset);
5406 if (elf_section_data (sec)->relocs != relstart)
5407 free (relstart);
5408 return TRUE;
5409 }
5410
5411 expecting_tls_get_addr = 0;
5412 switch (r_type)
5413 {
5414 case R_PPC_GOT_TLSLD16:
5415 case R_PPC_GOT_TLSLD16_LO:
5416 expecting_tls_get_addr = 1;
5417 /* Fall through. */
5418
5419 case R_PPC_GOT_TLSLD16_HI:
5420 case R_PPC_GOT_TLSLD16_HA:
5421 /* These relocs should never be against a symbol
5422 defined in a shared lib. Leave them alone if
5423 that turns out to be the case. */
5424 if (!is_local)
5425 continue;
5426
5427 /* LD -> LE */
5428 tls_set = 0;
5429 tls_clear = TLS_LD;
5430 break;
5431
5432 case R_PPC_GOT_TLSGD16:
5433 case R_PPC_GOT_TLSGD16_LO:
5434 expecting_tls_get_addr = 1;
5435 /* Fall through. */
5436
5437 case R_PPC_GOT_TLSGD16_HI:
5438 case R_PPC_GOT_TLSGD16_HA:
5439 if (is_local)
5440 /* GD -> LE */
5441 tls_set = 0;
5442 else
5443 /* GD -> IE */
5444 tls_set = TLS_TLS | TLS_TPRELGD;
5445 tls_clear = TLS_GD;
5446 break;
5447
5448 case R_PPC_GOT_TPREL16:
5449 case R_PPC_GOT_TPREL16_LO:
5450 case R_PPC_GOT_TPREL16_HI:
5451 case R_PPC_GOT_TPREL16_HA:
5452 if (is_local)
5453 {
5454 /* IE -> LE */
5455 tls_set = 0;
5456 tls_clear = TLS_TPREL;
5457 break;
5458 }
5459 else
5460 continue;
5461
5462 case R_PPC_TLSGD:
5463 case R_PPC_TLSLD:
5464 expecting_tls_get_addr = 2;
5465 tls_set = 0;
5466 tls_clear = 0;
5467 break;
5468
5469 default:
5470 continue;
5471 }
5472
5473 if (pass == 0)
5474 {
5475 if (!expecting_tls_get_addr
5476 || (expecting_tls_get_addr == 1
5477 && !sec->has_tls_get_addr_call))
5478 continue;
5479
5480 if (rel + 1 < relend
5481 && branch_reloc_hash_match (ibfd, rel + 1,
5482 htab->tls_get_addr))
5483 continue;
5484
5485 /* Uh oh, we didn't find the expected call. We
5486 could just mark this symbol to exclude it
5487 from tls optimization but it's safer to skip
5488 the entire optimization. */
5489 info->callbacks->minfo (_("%H arg lost __tls_get_addr, "
5490 "TLS optimization disabled\n"),
5491 ibfd, sec, rel->r_offset);
5492 if (elf_section_data (sec)->relocs != relstart)
5493 free (relstart);
5494 return TRUE;
5495 }
5496
5497 if (expecting_tls_get_addr)
5498 {
5499 struct plt_entry *ent;
5500 bfd_vma addend = 0;
5501
5502 if (bfd_link_pic (info)
5503 && ELF32_R_TYPE (rel[1].r_info) == R_PPC_PLTREL24)
5504 addend = rel[1].r_addend;
5505 ent = find_plt_ent (&htab->tls_get_addr->plt.plist,
5506 got2, addend);
5507 if (ent != NULL && ent->plt.refcount > 0)
5508 ent->plt.refcount -= 1;
5509
5510 if (expecting_tls_get_addr == 2)
5511 continue;
5512 }
5513
5514 if (h != NULL)
5515 {
5516 tls_mask = &ppc_elf_hash_entry (h)->tls_mask;
5517 got_count = &h->got.refcount;
5518 }
5519 else
5520 {
5521 bfd_signed_vma *lgot_refs;
5522 struct plt_entry **local_plt;
5523 char *lgot_masks;
5524
5525 if (locsyms == NULL)
5526 {
5527 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
5528 if (locsyms == NULL)
5529 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
5530 symtab_hdr->sh_info,
5531 0, NULL, NULL, NULL);
5532 if (locsyms == NULL)
5533 {
5534 if (elf_section_data (sec)->relocs != relstart)
5535 free (relstart);
5536 return FALSE;
5537 }
5538 }
5539 lgot_refs = elf_local_got_refcounts (ibfd);
5540 if (lgot_refs == NULL)
5541 abort ();
5542 local_plt = (struct plt_entry **)
5543 (lgot_refs + symtab_hdr->sh_info);
5544 lgot_masks = (char *) (local_plt + symtab_hdr->sh_info);
5545 tls_mask = &lgot_masks[r_symndx];
5546 got_count = &lgot_refs[r_symndx];
5547 }
5548
5549 if (tls_set == 0)
5550 {
5551 /* We managed to get rid of a got entry. */
5552 if (*got_count > 0)
5553 *got_count -= 1;
5554 }
5555
5556 *tls_mask |= tls_set;
5557 *tls_mask &= ~tls_clear;
5558 }
5559
5560 if (elf_section_data (sec)->relocs != relstart)
5561 free (relstart);
5562 }
5563
5564 if (locsyms != NULL
5565 && (symtab_hdr->contents != (unsigned char *) locsyms))
5566 {
5567 if (!info->keep_memory)
5568 free (locsyms);
5569 else
5570 symtab_hdr->contents = (unsigned char *) locsyms;
5571 }
5572 }
5573 return TRUE;
5574 }
5575 \f
5576 /* Return true if we have dynamic relocs that apply to read-only sections. */
5577
5578 static bfd_boolean
5579 readonly_dynrelocs (struct elf_link_hash_entry *h)
5580 {
5581 struct elf_dyn_relocs *p;
5582
5583 for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next)
5584 {
5585 asection *s = p->sec->output_section;
5586
5587 if (s != NULL
5588 && ((s->flags & (SEC_READONLY | SEC_ALLOC))
5589 == (SEC_READONLY | SEC_ALLOC)))
5590 return TRUE;
5591 }
5592 return FALSE;
5593 }
5594
5595 /* Adjust a symbol defined by a dynamic object and referenced by a
5596 regular object. The current definition is in some section of the
5597 dynamic object, but we're not including those sections. We have to
5598 change the definition to something the rest of the link can
5599 understand. */
5600
5601 static bfd_boolean
5602 ppc_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
5603 struct elf_link_hash_entry *h)
5604 {
5605 struct ppc_elf_link_hash_table *htab;
5606 asection *s;
5607
5608 #ifdef DEBUG
5609 fprintf (stderr, "ppc_elf_adjust_dynamic_symbol called for %s\n",
5610 h->root.root.string);
5611 #endif
5612
5613 /* Make sure we know what is going on here. */
5614 htab = ppc_elf_hash_table (info);
5615 BFD_ASSERT (htab->elf.dynobj != NULL
5616 && (h->needs_plt
5617 || h->type == STT_GNU_IFUNC
5618 || h->u.weakdef != NULL
5619 || (h->def_dynamic
5620 && h->ref_regular
5621 && !h->def_regular)));
5622
5623 /* Deal with function syms. */
5624 if (h->type == STT_FUNC
5625 || h->type == STT_GNU_IFUNC
5626 || h->needs_plt)
5627 {
5628 /* Clear procedure linkage table information for any symbol that
5629 won't need a .plt entry. */
5630 struct plt_entry *ent;
5631 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
5632 if (ent->plt.refcount > 0)
5633 break;
5634 if (ent == NULL
5635 || (h->type != STT_GNU_IFUNC
5636 && (SYMBOL_CALLS_LOCAL (info, h)
5637 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
5638 && h->root.type == bfd_link_hash_undefweak))))
5639 {
5640 /* A PLT entry is not required/allowed when:
5641
5642 1. We are not using ld.so; because then the PLT entry
5643 can't be set up, so we can't use one. In this case,
5644 ppc_elf_adjust_dynamic_symbol won't even be called.
5645
5646 2. GC has rendered the entry unused.
5647
5648 3. We know for certain that a call to this symbol
5649 will go to this object, or will remain undefined. */
5650 h->plt.plist = NULL;
5651 h->needs_plt = 0;
5652 h->pointer_equality_needed = 0;
5653 }
5654 else
5655 {
5656 /* Taking a function's address in a read/write section
5657 doesn't require us to define the function symbol in the
5658 executable on a plt call stub. A dynamic reloc can
5659 be used instead. */
5660 if (h->pointer_equality_needed
5661 && h->type != STT_GNU_IFUNC
5662 && !htab->is_vxworks
5663 && !ppc_elf_hash_entry (h)->has_sda_refs
5664 && !readonly_dynrelocs (h))
5665 {
5666 h->pointer_equality_needed = 0;
5667 h->non_got_ref = 0;
5668 }
5669
5670 /* After adjust_dynamic_symbol, non_got_ref set in the
5671 non-shared case means that we have allocated space in
5672 .dynbss for the symbol and thus dyn_relocs for this
5673 symbol should be discarded.
5674 If we get here we know we are making a PLT entry for this
5675 symbol, and in an executable we'd normally resolve
5676 relocations against this symbol to the PLT entry. Allow
5677 dynamic relocs if the reference is weak, and the dynamic
5678 relocs will not cause text relocation. */
5679 else if (!h->ref_regular_nonweak
5680 && h->non_got_ref
5681 && h->type != STT_GNU_IFUNC
5682 && !htab->is_vxworks
5683 && !ppc_elf_hash_entry (h)->has_sda_refs
5684 && !readonly_dynrelocs (h))
5685 h->non_got_ref = 0;
5686 }
5687 h->protected_def = 0;
5688 return TRUE;
5689 }
5690 else
5691 h->plt.plist = NULL;
5692
5693 /* If this is a weak symbol, and there is a real definition, the
5694 processor independent code will have arranged for us to see the
5695 real definition first, and we can just use the same value. */
5696 if (h->u.weakdef != NULL)
5697 {
5698 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
5699 || h->u.weakdef->root.type == bfd_link_hash_defweak);
5700 h->root.u.def.section = h->u.weakdef->root.u.def.section;
5701 h->root.u.def.value = h->u.weakdef->root.u.def.value;
5702 if (ELIMINATE_COPY_RELOCS)
5703 h->non_got_ref = h->u.weakdef->non_got_ref;
5704 return TRUE;
5705 }
5706
5707 /* This is a reference to a symbol defined by a dynamic object which
5708 is not a function. */
5709
5710 /* If we are creating a shared library, we must presume that the
5711 only references to the symbol are via the global offset table.
5712 For such cases we need not do anything here; the relocations will
5713 be handled correctly by relocate_section. */
5714 if (bfd_link_pic (info))
5715 {
5716 h->protected_def = 0;
5717 return TRUE;
5718 }
5719
5720 /* If there are no references to this symbol that do not use the
5721 GOT, we don't need to generate a copy reloc. */
5722 if (!h->non_got_ref)
5723 {
5724 h->protected_def = 0;
5725 return TRUE;
5726 }
5727
5728 /* Protected variables do not work with .dynbss. The copy in
5729 .dynbss won't be used by the shared library with the protected
5730 definition for the variable. Editing to PIC, or text relocations
5731 are preferable to an incorrect program. */
5732 if (h->protected_def)
5733 {
5734 if (ELIMINATE_COPY_RELOCS
5735 && ppc_elf_hash_entry (h)->has_addr16_ha
5736 && ppc_elf_hash_entry (h)->has_addr16_lo
5737 && htab->params->pic_fixup == 0
5738 && info->disable_target_specific_optimizations <= 1)
5739 htab->params->pic_fixup = 1;
5740 h->non_got_ref = 0;
5741 return TRUE;
5742 }
5743
5744 /* If -z nocopyreloc was given, we won't generate them either. */
5745 if (info->nocopyreloc)
5746 {
5747 h->non_got_ref = 0;
5748 return TRUE;
5749 }
5750
5751 /* If we didn't find any dynamic relocs in read-only sections, then
5752 we'll be keeping the dynamic relocs and avoiding the copy reloc.
5753 We can't do this if there are any small data relocations. This
5754 doesn't work on VxWorks, where we can not have dynamic
5755 relocations (other than copy and jump slot relocations) in an
5756 executable. */
5757 if (ELIMINATE_COPY_RELOCS
5758 && !ppc_elf_hash_entry (h)->has_sda_refs
5759 && !htab->is_vxworks
5760 && !h->def_regular
5761 && !readonly_dynrelocs (h))
5762 {
5763 h->non_got_ref = 0;
5764 return TRUE;
5765 }
5766
5767 /* We must allocate the symbol in our .dynbss section, which will
5768 become part of the .bss section of the executable. There will be
5769 an entry for this symbol in the .dynsym section. The dynamic
5770 object will contain position independent code, so all references
5771 from the dynamic object to this symbol will go through the global
5772 offset table. The dynamic linker will use the .dynsym entry to
5773 determine the address it must put in the global offset table, so
5774 both the dynamic object and the regular object will refer to the
5775 same memory location for the variable.
5776
5777 Of course, if the symbol is referenced using SDAREL relocs, we
5778 must instead allocate it in .sbss. */
5779
5780 if (ppc_elf_hash_entry (h)->has_sda_refs)
5781 s = htab->dynsbss;
5782 else
5783 s = htab->dynbss;
5784 BFD_ASSERT (s != NULL);
5785
5786 /* We must generate a R_PPC_COPY reloc to tell the dynamic linker to
5787 copy the initial value out of the dynamic object and into the
5788 runtime process image. We need to remember the offset into the
5789 .rela.bss section we are going to use. */
5790 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
5791 {
5792 asection *srel;
5793
5794 if (ppc_elf_hash_entry (h)->has_sda_refs)
5795 srel = htab->relsbss;
5796 else
5797 srel = htab->relbss;
5798 BFD_ASSERT (srel != NULL);
5799 srel->size += sizeof (Elf32_External_Rela);
5800 h->needs_copy = 1;
5801 }
5802
5803 return _bfd_elf_adjust_dynamic_copy (info, h, s);
5804 }
5805 \f
5806 /* Generate a symbol to mark plt call stubs. For non-PIC code the sym is
5807 xxxxxxxx.plt_call32.<callee> where xxxxxxxx is a hex number, usually 0,
5808 specifying the addend on the plt relocation. For -fpic code, the sym
5809 is xxxxxxxx.plt_pic32.<callee>, and for -fPIC
5810 xxxxxxxx.got2.plt_pic32.<callee>. */
5811
5812 static bfd_boolean
5813 add_stub_sym (struct plt_entry *ent,
5814 struct elf_link_hash_entry *h,
5815 struct bfd_link_info *info)
5816 {
5817 struct elf_link_hash_entry *sh;
5818 size_t len1, len2, len3;
5819 char *name;
5820 const char *stub;
5821 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
5822
5823 if (bfd_link_pic (info))
5824 stub = ".plt_pic32.";
5825 else
5826 stub = ".plt_call32.";
5827
5828 len1 = strlen (h->root.root.string);
5829 len2 = strlen (stub);
5830 len3 = 0;
5831 if (ent->sec)
5832 len3 = strlen (ent->sec->name);
5833 name = bfd_malloc (len1 + len2 + len3 + 9);
5834 if (name == NULL)
5835 return FALSE;
5836 sprintf (name, "%08x", (unsigned) ent->addend & 0xffffffff);
5837 if (ent->sec)
5838 memcpy (name + 8, ent->sec->name, len3);
5839 memcpy (name + 8 + len3, stub, len2);
5840 memcpy (name + 8 + len3 + len2, h->root.root.string, len1 + 1);
5841 sh = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
5842 if (sh == NULL)
5843 return FALSE;
5844 if (sh->root.type == bfd_link_hash_new)
5845 {
5846 sh->root.type = bfd_link_hash_defined;
5847 sh->root.u.def.section = htab->glink;
5848 sh->root.u.def.value = ent->glink_offset;
5849 sh->ref_regular = 1;
5850 sh->def_regular = 1;
5851 sh->ref_regular_nonweak = 1;
5852 sh->forced_local = 1;
5853 sh->non_elf = 0;
5854 sh->root.linker_def = 1;
5855 }
5856 return TRUE;
5857 }
5858
5859 /* Allocate NEED contiguous space in .got, and return the offset.
5860 Handles allocation of the got header when crossing 32k. */
5861
5862 static bfd_vma
5863 allocate_got (struct ppc_elf_link_hash_table *htab, unsigned int need)
5864 {
5865 bfd_vma where;
5866 unsigned int max_before_header;
5867
5868 if (htab->plt_type == PLT_VXWORKS)
5869 {
5870 where = htab->got->size;
5871 htab->got->size += need;
5872 }
5873 else
5874 {
5875 max_before_header = htab->plt_type == PLT_NEW ? 32768 : 32764;
5876 if (need <= htab->got_gap)
5877 {
5878 where = max_before_header - htab->got_gap;
5879 htab->got_gap -= need;
5880 }
5881 else
5882 {
5883 if (htab->got->size + need > max_before_header
5884 && htab->got->size <= max_before_header)
5885 {
5886 htab->got_gap = max_before_header - htab->got->size;
5887 htab->got->size = max_before_header + htab->got_header_size;
5888 }
5889 where = htab->got->size;
5890 htab->got->size += need;
5891 }
5892 }
5893 return where;
5894 }
5895
5896 /* Allocate space in associated reloc sections for dynamic relocs. */
5897
5898 static bfd_boolean
5899 allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
5900 {
5901 struct bfd_link_info *info = inf;
5902 struct ppc_elf_link_hash_entry *eh;
5903 struct ppc_elf_link_hash_table *htab;
5904 struct elf_dyn_relocs *p;
5905
5906 if (h->root.type == bfd_link_hash_indirect)
5907 return TRUE;
5908
5909 htab = ppc_elf_hash_table (info);
5910 if (htab->elf.dynamic_sections_created
5911 || h->type == STT_GNU_IFUNC)
5912 {
5913 struct plt_entry *ent;
5914 bfd_boolean doneone = FALSE;
5915 bfd_vma plt_offset = 0, glink_offset = 0;
5916 bfd_boolean dyn;
5917
5918 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
5919 if (ent->plt.refcount > 0)
5920 {
5921 /* Make sure this symbol is output as a dynamic symbol. */
5922 if (h->dynindx == -1
5923 && !h->forced_local
5924 && !h->def_regular
5925 && htab->elf.dynamic_sections_created)
5926 {
5927 if (! bfd_elf_link_record_dynamic_symbol (info, h))
5928 return FALSE;
5929 }
5930
5931 dyn = htab->elf.dynamic_sections_created;
5932 if (bfd_link_pic (info)
5933 || h->type == STT_GNU_IFUNC
5934 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))
5935 {
5936 asection *s = htab->plt;
5937 if (!dyn || h->dynindx == -1)
5938 s = htab->iplt;
5939
5940 if (htab->plt_type == PLT_NEW || !dyn || h->dynindx == -1)
5941 {
5942 if (!doneone)
5943 {
5944 plt_offset = s->size;
5945 s->size += 4;
5946 }
5947 ent->plt.offset = plt_offset;
5948
5949 s = htab->glink;
5950 if (!doneone || bfd_link_pic (info))
5951 {
5952 glink_offset = s->size;
5953 s->size += GLINK_ENTRY_SIZE;
5954 if (h == htab->tls_get_addr
5955 && !htab->params->no_tls_get_addr_opt)
5956 s->size += TLS_GET_ADDR_GLINK_SIZE - GLINK_ENTRY_SIZE;
5957 }
5958 if (!doneone
5959 && !bfd_link_pic (info)
5960 && h->def_dynamic
5961 && !h->def_regular)
5962 {
5963 h->root.u.def.section = s;
5964 h->root.u.def.value = glink_offset;
5965 }
5966 ent->glink_offset = glink_offset;
5967
5968 if (htab->params->emit_stub_syms
5969 && !add_stub_sym (ent, h, info))
5970 return FALSE;
5971 }
5972 else
5973 {
5974 if (!doneone)
5975 {
5976 /* If this is the first .plt entry, make room
5977 for the special first entry. */
5978 if (s->size == 0)
5979 s->size += htab->plt_initial_entry_size;
5980
5981 /* The PowerPC PLT is actually composed of two
5982 parts, the first part is 2 words (for a load
5983 and a jump), and then there is a remaining
5984 word available at the end. */
5985 plt_offset = (htab->plt_initial_entry_size
5986 + (htab->plt_slot_size
5987 * ((s->size
5988 - htab->plt_initial_entry_size)
5989 / htab->plt_entry_size)));
5990
5991 /* If this symbol is not defined in a regular
5992 file, and we are not generating a shared
5993 library, then set the symbol to this location
5994 in the .plt. This is to avoid text
5995 relocations, and is required to make
5996 function pointers compare as equal between
5997 the normal executable and the shared library. */
5998 if (! bfd_link_pic (info)
5999 && h->def_dynamic
6000 && !h->def_regular)
6001 {
6002 h->root.u.def.section = s;
6003 h->root.u.def.value = plt_offset;
6004 }
6005
6006 /* Make room for this entry. */
6007 s->size += htab->plt_entry_size;
6008 /* After the 8192nd entry, room for two entries
6009 is allocated. */
6010 if (htab->plt_type == PLT_OLD
6011 && (s->size - htab->plt_initial_entry_size)
6012 / htab->plt_entry_size
6013 > PLT_NUM_SINGLE_ENTRIES)
6014 s->size += htab->plt_entry_size;
6015 }
6016 ent->plt.offset = plt_offset;
6017 }
6018
6019 /* We also need to make an entry in the .rela.plt section. */
6020 if (!doneone)
6021 {
6022 if (!htab->elf.dynamic_sections_created
6023 || h->dynindx == -1)
6024 htab->reliplt->size += sizeof (Elf32_External_Rela);
6025 else
6026 {
6027 htab->relplt->size += sizeof (Elf32_External_Rela);
6028
6029 if (htab->plt_type == PLT_VXWORKS)
6030 {
6031 /* Allocate space for the unloaded relocations. */
6032 if (!bfd_link_pic (info)
6033 && htab->elf.dynamic_sections_created)
6034 {
6035 if (ent->plt.offset
6036 == (bfd_vma) htab->plt_initial_entry_size)
6037 {
6038 htab->srelplt2->size
6039 += (sizeof (Elf32_External_Rela)
6040 * VXWORKS_PLTRESOLVE_RELOCS);
6041 }
6042
6043 htab->srelplt2->size
6044 += (sizeof (Elf32_External_Rela)
6045 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS);
6046 }
6047
6048 /* Every PLT entry has an associated GOT entry in
6049 .got.plt. */
6050 htab->sgotplt->size += 4;
6051 }
6052 }
6053 doneone = TRUE;
6054 }
6055 }
6056 else
6057 ent->plt.offset = (bfd_vma) -1;
6058 }
6059 else
6060 ent->plt.offset = (bfd_vma) -1;
6061
6062 if (!doneone)
6063 {
6064 h->plt.plist = NULL;
6065 h->needs_plt = 0;
6066 }
6067 }
6068 else
6069 {
6070 h->plt.plist = NULL;
6071 h->needs_plt = 0;
6072 }
6073
6074 eh = (struct ppc_elf_link_hash_entry *) h;
6075 if (eh->elf.got.refcount > 0
6076 || (ELIMINATE_COPY_RELOCS
6077 && !eh->elf.def_regular
6078 && eh->elf.protected_def
6079 && eh->has_addr16_ha
6080 && eh->has_addr16_lo
6081 && htab->params->pic_fixup > 0))
6082 {
6083 bfd_boolean dyn;
6084 unsigned int need;
6085
6086 /* Make sure this symbol is output as a dynamic symbol. */
6087 if (eh->elf.dynindx == -1
6088 && !eh->elf.forced_local
6089 && eh->elf.type != STT_GNU_IFUNC
6090 && htab->elf.dynamic_sections_created)
6091 {
6092 if (!bfd_elf_link_record_dynamic_symbol (info, &eh->elf))
6093 return FALSE;
6094 }
6095
6096 need = 0;
6097 if ((eh->tls_mask & TLS_TLS) != 0)
6098 {
6099 if ((eh->tls_mask & TLS_LD) != 0)
6100 {
6101 if (!eh->elf.def_dynamic)
6102 /* We'll just use htab->tlsld_got.offset. This should
6103 always be the case. It's a little odd if we have
6104 a local dynamic reloc against a non-local symbol. */
6105 htab->tlsld_got.refcount += 1;
6106 else
6107 need += 8;
6108 }
6109 if ((eh->tls_mask & TLS_GD) != 0)
6110 need += 8;
6111 if ((eh->tls_mask & (TLS_TPREL | TLS_TPRELGD)) != 0)
6112 need += 4;
6113 if ((eh->tls_mask & TLS_DTPREL) != 0)
6114 need += 4;
6115 }
6116 else
6117 need += 4;
6118 if (need == 0)
6119 eh->elf.got.offset = (bfd_vma) -1;
6120 else
6121 {
6122 eh->elf.got.offset = allocate_got (htab, need);
6123 dyn = htab->elf.dynamic_sections_created;
6124 if ((bfd_link_pic (info)
6125 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, &eh->elf))
6126 && (ELF_ST_VISIBILITY (eh->elf.other) == STV_DEFAULT
6127 || eh->elf.root.type != bfd_link_hash_undefweak))
6128 {
6129 asection *rsec = htab->relgot;
6130
6131 if (eh->elf.type == STT_GNU_IFUNC)
6132 rsec = htab->reliplt;
6133 /* All the entries we allocated need relocs.
6134 Except LD only needs one. */
6135 if ((eh->tls_mask & TLS_LD) != 0
6136 && eh->elf.def_dynamic)
6137 need -= 4;
6138 rsec->size += need * (sizeof (Elf32_External_Rela) / 4);
6139 }
6140 }
6141 }
6142 else
6143 eh->elf.got.offset = (bfd_vma) -1;
6144
6145 if (eh->dyn_relocs == NULL
6146 || !htab->elf.dynamic_sections_created)
6147 return TRUE;
6148
6149 /* In the shared -Bsymbolic case, discard space allocated for
6150 dynamic pc-relative relocs against symbols which turn out to be
6151 defined in regular objects. For the normal shared case, discard
6152 space for relocs that have become local due to symbol visibility
6153 changes. */
6154
6155 if (bfd_link_pic (info))
6156 {
6157 /* Relocs that use pc_count are those that appear on a call insn,
6158 or certain REL relocs (see must_be_dyn_reloc) that can be
6159 generated via assembly. We want calls to protected symbols to
6160 resolve directly to the function rather than going via the plt.
6161 If people want function pointer comparisons to work as expected
6162 then they should avoid writing weird assembly. */
6163 if (SYMBOL_CALLS_LOCAL (info, h))
6164 {
6165 struct elf_dyn_relocs **pp;
6166
6167 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
6168 {
6169 p->count -= p->pc_count;
6170 p->pc_count = 0;
6171 if (p->count == 0)
6172 *pp = p->next;
6173 else
6174 pp = &p->next;
6175 }
6176 }
6177
6178 if (htab->is_vxworks)
6179 {
6180 struct elf_dyn_relocs **pp;
6181
6182 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
6183 {
6184 if (strcmp (p->sec->output_section->name, ".tls_vars") == 0)
6185 *pp = p->next;
6186 else
6187 pp = &p->next;
6188 }
6189 }
6190
6191 /* Discard relocs on undefined symbols that must be local. */
6192 if (eh->dyn_relocs != NULL
6193 && h->root.type == bfd_link_hash_undefined
6194 && (ELF_ST_VISIBILITY (h->other) == STV_HIDDEN
6195 || ELF_ST_VISIBILITY (h->other) == STV_INTERNAL))
6196 eh->dyn_relocs = NULL;
6197
6198 /* Also discard relocs on undefined weak syms with non-default
6199 visibility. */
6200 if (eh->dyn_relocs != NULL
6201 && h->root.type == bfd_link_hash_undefweak)
6202 {
6203 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
6204 eh->dyn_relocs = NULL;
6205
6206 /* Make sure undefined weak symbols are output as a dynamic
6207 symbol in PIEs. */
6208 else if (h->dynindx == -1
6209 && !h->forced_local
6210 && !h->def_regular)
6211 {
6212 if (! bfd_elf_link_record_dynamic_symbol (info, h))
6213 return FALSE;
6214 }
6215 }
6216 }
6217 else if (ELIMINATE_COPY_RELOCS)
6218 {
6219 /* For the non-shared case, discard space for relocs against
6220 symbols which turn out to need copy relocs or are not
6221 dynamic. */
6222
6223 if (!h->non_got_ref
6224 && !h->def_regular
6225 && !(h->protected_def
6226 && eh->has_addr16_ha
6227 && eh->has_addr16_lo
6228 && htab->params->pic_fixup > 0))
6229 {
6230 /* Make sure this symbol is output as a dynamic symbol.
6231 Undefined weak syms won't yet be marked as dynamic. */
6232 if (h->dynindx == -1
6233 && !h->forced_local)
6234 {
6235 if (! bfd_elf_link_record_dynamic_symbol (info, h))
6236 return FALSE;
6237 }
6238
6239 /* If that succeeded, we know we'll be keeping all the
6240 relocs. */
6241 if (h->dynindx != -1)
6242 goto keep;
6243 }
6244
6245 eh->dyn_relocs = NULL;
6246
6247 keep: ;
6248 }
6249
6250 /* Finally, allocate space. */
6251 for (p = eh->dyn_relocs; p != NULL; p = p->next)
6252 {
6253 asection *sreloc = elf_section_data (p->sec)->sreloc;
6254 if (eh->elf.type == STT_GNU_IFUNC)
6255 sreloc = htab->reliplt;
6256 sreloc->size += p->count * sizeof (Elf32_External_Rela);
6257 }
6258
6259 return TRUE;
6260 }
6261
6262 /* Set DF_TEXTREL if we find any dynamic relocs that apply to
6263 read-only sections. */
6264
6265 static bfd_boolean
6266 maybe_set_textrel (struct elf_link_hash_entry *h, void *info)
6267 {
6268 if (h->root.type == bfd_link_hash_indirect)
6269 return TRUE;
6270
6271 if (readonly_dynrelocs (h))
6272 {
6273 ((struct bfd_link_info *) info)->flags |= DF_TEXTREL;
6274
6275 /* Not an error, just cut short the traversal. */
6276 return FALSE;
6277 }
6278 return TRUE;
6279 }
6280
6281 static const unsigned char glink_eh_frame_cie[] =
6282 {
6283 0, 0, 0, 16, /* length. */
6284 0, 0, 0, 0, /* id. */
6285 1, /* CIE version. */
6286 'z', 'R', 0, /* Augmentation string. */
6287 4, /* Code alignment. */
6288 0x7c, /* Data alignment. */
6289 65, /* RA reg. */
6290 1, /* Augmentation size. */
6291 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding. */
6292 DW_CFA_def_cfa, 1, 0 /* def_cfa: r1 offset 0. */
6293 };
6294
6295 /* Set the sizes of the dynamic sections. */
6296
6297 static bfd_boolean
6298 ppc_elf_size_dynamic_sections (bfd *output_bfd,
6299 struct bfd_link_info *info)
6300 {
6301 struct ppc_elf_link_hash_table *htab;
6302 asection *s;
6303 bfd_boolean relocs;
6304 bfd *ibfd;
6305
6306 #ifdef DEBUG
6307 fprintf (stderr, "ppc_elf_size_dynamic_sections called\n");
6308 #endif
6309
6310 htab = ppc_elf_hash_table (info);
6311 BFD_ASSERT (htab->elf.dynobj != NULL);
6312
6313 if (elf_hash_table (info)->dynamic_sections_created)
6314 {
6315 /* Set the contents of the .interp section to the interpreter. */
6316 if (bfd_link_executable (info) && !info->nointerp)
6317 {
6318 s = bfd_get_linker_section (htab->elf.dynobj, ".interp");
6319 BFD_ASSERT (s != NULL);
6320 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
6321 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
6322 }
6323 }
6324
6325 if (htab->plt_type == PLT_OLD)
6326 htab->got_header_size = 16;
6327 else if (htab->plt_type == PLT_NEW)
6328 htab->got_header_size = 12;
6329
6330 /* Set up .got offsets for local syms, and space for local dynamic
6331 relocs. */
6332 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
6333 {
6334 bfd_signed_vma *local_got;
6335 bfd_signed_vma *end_local_got;
6336 struct plt_entry **local_plt;
6337 struct plt_entry **end_local_plt;
6338 char *lgot_masks;
6339 bfd_size_type locsymcount;
6340 Elf_Internal_Shdr *symtab_hdr;
6341
6342 if (!is_ppc_elf (ibfd))
6343 continue;
6344
6345 for (s = ibfd->sections; s != NULL; s = s->next)
6346 {
6347 struct ppc_dyn_relocs *p;
6348
6349 for (p = ((struct ppc_dyn_relocs *)
6350 elf_section_data (s)->local_dynrel);
6351 p != NULL;
6352 p = p->next)
6353 {
6354 if (!bfd_is_abs_section (p->sec)
6355 && bfd_is_abs_section (p->sec->output_section))
6356 {
6357 /* Input section has been discarded, either because
6358 it is a copy of a linkonce section or due to
6359 linker script /DISCARD/, so we'll be discarding
6360 the relocs too. */
6361 }
6362 else if (htab->is_vxworks
6363 && strcmp (p->sec->output_section->name,
6364 ".tls_vars") == 0)
6365 {
6366 /* Relocations in vxworks .tls_vars sections are
6367 handled specially by the loader. */
6368 }
6369 else if (p->count != 0)
6370 {
6371 asection *sreloc = elf_section_data (p->sec)->sreloc;
6372 if (p->ifunc)
6373 sreloc = htab->reliplt;
6374 sreloc->size += p->count * sizeof (Elf32_External_Rela);
6375 if ((p->sec->output_section->flags
6376 & (SEC_READONLY | SEC_ALLOC))
6377 == (SEC_READONLY | SEC_ALLOC))
6378 info->flags |= DF_TEXTREL;
6379 }
6380 }
6381 }
6382
6383 local_got = elf_local_got_refcounts (ibfd);
6384 if (!local_got)
6385 continue;
6386
6387 symtab_hdr = &elf_symtab_hdr (ibfd);
6388 locsymcount = symtab_hdr->sh_info;
6389 end_local_got = local_got + locsymcount;
6390 local_plt = (struct plt_entry **) end_local_got;
6391 end_local_plt = local_plt + locsymcount;
6392 lgot_masks = (char *) end_local_plt;
6393
6394 for (; local_got < end_local_got; ++local_got, ++lgot_masks)
6395 if (*local_got > 0)
6396 {
6397 unsigned int need = 0;
6398 if ((*lgot_masks & TLS_TLS) != 0)
6399 {
6400 if ((*lgot_masks & TLS_GD) != 0)
6401 need += 8;
6402 if ((*lgot_masks & TLS_LD) != 0)
6403 htab->tlsld_got.refcount += 1;
6404 if ((*lgot_masks & (TLS_TPREL | TLS_TPRELGD)) != 0)
6405 need += 4;
6406 if ((*lgot_masks & TLS_DTPREL) != 0)
6407 need += 4;
6408 }
6409 else
6410 need += 4;
6411 if (need == 0)
6412 *local_got = (bfd_vma) -1;
6413 else
6414 {
6415 *local_got = allocate_got (htab, need);
6416 if (bfd_link_pic (info))
6417 {
6418 asection *srel = htab->relgot;
6419 if ((*lgot_masks & PLT_IFUNC) != 0)
6420 srel = htab->reliplt;
6421 srel->size += need * (sizeof (Elf32_External_Rela) / 4);
6422 }
6423 }
6424 }
6425 else
6426 *local_got = (bfd_vma) -1;
6427
6428 if (htab->is_vxworks)
6429 continue;
6430
6431 /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */
6432 for (; local_plt < end_local_plt; ++local_plt)
6433 {
6434 struct plt_entry *ent;
6435 bfd_boolean doneone = FALSE;
6436 bfd_vma plt_offset = 0, glink_offset = 0;
6437
6438 for (ent = *local_plt; ent != NULL; ent = ent->next)
6439 if (ent->plt.refcount > 0)
6440 {
6441 s = htab->iplt;
6442
6443 if (!doneone)
6444 {
6445 plt_offset = s->size;
6446 s->size += 4;
6447 }
6448 ent->plt.offset = plt_offset;
6449
6450 s = htab->glink;
6451 if (!doneone || bfd_link_pic (info))
6452 {
6453 glink_offset = s->size;
6454 s->size += GLINK_ENTRY_SIZE;
6455 }
6456 ent->glink_offset = glink_offset;
6457
6458 if (!doneone)
6459 {
6460 htab->reliplt->size += sizeof (Elf32_External_Rela);
6461 doneone = TRUE;
6462 }
6463 }
6464 else
6465 ent->plt.offset = (bfd_vma) -1;
6466 }
6467 }
6468
6469 /* Allocate space for global sym dynamic relocs. */
6470 elf_link_hash_traverse (elf_hash_table (info), allocate_dynrelocs, info);
6471
6472 if (htab->tlsld_got.refcount > 0)
6473 {
6474 htab->tlsld_got.offset = allocate_got (htab, 8);
6475 if (bfd_link_pic (info))
6476 htab->relgot->size += sizeof (Elf32_External_Rela);
6477 }
6478 else
6479 htab->tlsld_got.offset = (bfd_vma) -1;
6480
6481 if (htab->got != NULL && htab->plt_type != PLT_VXWORKS)
6482 {
6483 unsigned int g_o_t = 32768;
6484
6485 /* If we haven't allocated the header, do so now. When we get here,
6486 for old plt/got the got size will be 0 to 32764 (not allocated),
6487 or 32780 to 65536 (header allocated). For new plt/got, the
6488 corresponding ranges are 0 to 32768 and 32780 to 65536. */
6489 if (htab->got->size <= 32768)
6490 {
6491 g_o_t = htab->got->size;
6492 if (htab->plt_type == PLT_OLD)
6493 g_o_t += 4;
6494 htab->got->size += htab->got_header_size;
6495 }
6496
6497 htab->elf.hgot->root.u.def.value = g_o_t;
6498 }
6499 if (bfd_link_pic (info))
6500 {
6501 struct elf_link_hash_entry *sda = htab->sdata[0].sym;
6502
6503 sda->root.u.def.section = htab->elf.hgot->root.u.def.section;
6504 sda->root.u.def.value = htab->elf.hgot->root.u.def.value;
6505 }
6506 if (info->emitrelocations)
6507 {
6508 struct elf_link_hash_entry *sda = htab->sdata[0].sym;
6509
6510 if (sda != NULL && sda->ref_regular)
6511 sda->root.u.def.section->flags |= SEC_KEEP;
6512 sda = htab->sdata[1].sym;
6513 if (sda != NULL && sda->ref_regular)
6514 sda->root.u.def.section->flags |= SEC_KEEP;
6515 }
6516
6517 if (htab->glink != NULL
6518 && htab->glink->size != 0
6519 && htab->elf.dynamic_sections_created)
6520 {
6521 htab->glink_pltresolve = htab->glink->size;
6522 /* Space for the branch table. ??? We don't need entries for
6523 non-dynamic symbols in this table. This case can arise with
6524 static ifuncs or forced local ifuncs. */
6525 htab->glink->size += htab->glink->size / (GLINK_ENTRY_SIZE / 4) - 4;
6526 /* Pad out to align the start of PLTresolve. */
6527 htab->glink->size += -htab->glink->size & (htab->params->ppc476_workaround
6528 ? 63 : 15);
6529 htab->glink->size += GLINK_PLTRESOLVE;
6530
6531 if (htab->params->emit_stub_syms)
6532 {
6533 struct elf_link_hash_entry *sh;
6534 sh = elf_link_hash_lookup (&htab->elf, "__glink",
6535 TRUE, FALSE, FALSE);
6536 if (sh == NULL)
6537 return FALSE;
6538 if (sh->root.type == bfd_link_hash_new)
6539 {
6540 sh->root.type = bfd_link_hash_defined;
6541 sh->root.u.def.section = htab->glink;
6542 sh->root.u.def.value = htab->glink_pltresolve;
6543 sh->ref_regular = 1;
6544 sh->def_regular = 1;
6545 sh->ref_regular_nonweak = 1;
6546 sh->forced_local = 1;
6547 sh->non_elf = 0;
6548 sh->root.linker_def = 1;
6549 }
6550 sh = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve",
6551 TRUE, FALSE, FALSE);
6552 if (sh == NULL)
6553 return FALSE;
6554 if (sh->root.type == bfd_link_hash_new)
6555 {
6556 sh->root.type = bfd_link_hash_defined;
6557 sh->root.u.def.section = htab->glink;
6558 sh->root.u.def.value = htab->glink->size - GLINK_PLTRESOLVE;
6559 sh->ref_regular = 1;
6560 sh->def_regular = 1;
6561 sh->ref_regular_nonweak = 1;
6562 sh->forced_local = 1;
6563 sh->non_elf = 0;
6564 sh->root.linker_def = 1;
6565 }
6566 }
6567 }
6568
6569 if (htab->glink != NULL
6570 && htab->glink->size != 0
6571 && htab->glink_eh_frame != NULL
6572 && !bfd_is_abs_section (htab->glink_eh_frame->output_section)
6573 && _bfd_elf_eh_frame_present (info))
6574 {
6575 s = htab->glink_eh_frame;
6576 s->size = sizeof (glink_eh_frame_cie) + 20;
6577 if (bfd_link_pic (info))
6578 {
6579 s->size += 4;
6580 if (htab->glink->size - GLINK_PLTRESOLVE + 8 >= 256)
6581 s->size += 4;
6582 }
6583 }
6584
6585 /* We've now determined the sizes of the various dynamic sections.
6586 Allocate memory for them. */
6587 relocs = FALSE;
6588 for (s = htab->elf.dynobj->sections; s != NULL; s = s->next)
6589 {
6590 bfd_boolean strip_section = TRUE;
6591
6592 if ((s->flags & SEC_LINKER_CREATED) == 0)
6593 continue;
6594
6595 if (s == htab->plt
6596 || s == htab->got)
6597 {
6598 /* We'd like to strip these sections if they aren't needed, but if
6599 we've exported dynamic symbols from them we must leave them.
6600 It's too late to tell BFD to get rid of the symbols. */
6601 if (htab->elf.hplt != NULL)
6602 strip_section = FALSE;
6603 /* Strip this section if we don't need it; see the
6604 comment below. */
6605 }
6606 else if (s == htab->iplt
6607 || s == htab->glink
6608 || s == htab->glink_eh_frame
6609 || s == htab->sgotplt
6610 || s == htab->sbss
6611 || s == htab->dynbss
6612 || s == htab->dynsbss)
6613 {
6614 /* Strip these too. */
6615 }
6616 else if (s == htab->sdata[0].section
6617 || s == htab->sdata[1].section)
6618 {
6619 strip_section = (s->flags & SEC_KEEP) == 0;
6620 }
6621 else if (CONST_STRNEQ (bfd_get_section_name (htab->elf.dynobj, s),
6622 ".rela"))
6623 {
6624 if (s->size != 0)
6625 {
6626 /* Remember whether there are any relocation sections. */
6627 relocs = TRUE;
6628
6629 /* We use the reloc_count field as a counter if we need
6630 to copy relocs into the output file. */
6631 s->reloc_count = 0;
6632 }
6633 }
6634 else
6635 {
6636 /* It's not one of our sections, so don't allocate space. */
6637 continue;
6638 }
6639
6640 if (s->size == 0 && strip_section)
6641 {
6642 /* If we don't need this section, strip it from the
6643 output file. This is mostly to handle .rela.bss and
6644 .rela.plt. We must create both sections in
6645 create_dynamic_sections, because they must be created
6646 before the linker maps input sections to output
6647 sections. The linker does that before
6648 adjust_dynamic_symbol is called, and it is that
6649 function which decides whether anything needs to go
6650 into these sections. */
6651 s->flags |= SEC_EXCLUDE;
6652 continue;
6653 }
6654
6655 if ((s->flags & SEC_HAS_CONTENTS) == 0)
6656 continue;
6657
6658 /* Allocate memory for the section contents. */
6659 s->contents = bfd_zalloc (htab->elf.dynobj, s->size);
6660 if (s->contents == NULL)
6661 return FALSE;
6662 }
6663
6664 if (htab->elf.dynamic_sections_created)
6665 {
6666 /* Add some entries to the .dynamic section. We fill in the
6667 values later, in ppc_elf_finish_dynamic_sections, but we
6668 must add the entries now so that we get the correct size for
6669 the .dynamic section. The DT_DEBUG entry is filled in by the
6670 dynamic linker and used by the debugger. */
6671 #define add_dynamic_entry(TAG, VAL) \
6672 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
6673
6674 if (bfd_link_executable (info))
6675 {
6676 if (!add_dynamic_entry (DT_DEBUG, 0))
6677 return FALSE;
6678 }
6679
6680 if (htab->plt != NULL && htab->plt->size != 0)
6681 {
6682 if (!add_dynamic_entry (DT_PLTGOT, 0)
6683 || !add_dynamic_entry (DT_PLTRELSZ, 0)
6684 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
6685 || !add_dynamic_entry (DT_JMPREL, 0))
6686 return FALSE;
6687 }
6688
6689 if (htab->plt_type == PLT_NEW
6690 && htab->glink != NULL
6691 && htab->glink->size != 0)
6692 {
6693 if (!add_dynamic_entry (DT_PPC_GOT, 0))
6694 return FALSE;
6695 if (!htab->params->no_tls_get_addr_opt
6696 && htab->tls_get_addr != NULL
6697 && htab->tls_get_addr->plt.plist != NULL
6698 && !add_dynamic_entry (DT_PPC_OPT, PPC_OPT_TLS))
6699 return FALSE;
6700 }
6701
6702 if (relocs)
6703 {
6704 if (!add_dynamic_entry (DT_RELA, 0)
6705 || !add_dynamic_entry (DT_RELASZ, 0)
6706 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
6707 return FALSE;
6708 }
6709
6710 /* If any dynamic relocs apply to a read-only section, then we
6711 need a DT_TEXTREL entry. */
6712 if ((info->flags & DF_TEXTREL) == 0)
6713 elf_link_hash_traverse (elf_hash_table (info), maybe_set_textrel,
6714 info);
6715
6716 if ((info->flags & DF_TEXTREL) != 0)
6717 {
6718 if (!add_dynamic_entry (DT_TEXTREL, 0))
6719 return FALSE;
6720 }
6721 if (htab->is_vxworks
6722 && !elf_vxworks_add_dynamic_entries (output_bfd, info))
6723 return FALSE;
6724 }
6725 #undef add_dynamic_entry
6726
6727 if (htab->glink_eh_frame != NULL
6728 && htab->glink_eh_frame->contents != NULL)
6729 {
6730 unsigned char *p = htab->glink_eh_frame->contents;
6731 bfd_vma val;
6732
6733 memcpy (p, glink_eh_frame_cie, sizeof (glink_eh_frame_cie));
6734 /* CIE length (rewrite in case little-endian). */
6735 bfd_put_32 (htab->elf.dynobj, sizeof (glink_eh_frame_cie) - 4, p);
6736 p += sizeof (glink_eh_frame_cie);
6737 /* FDE length. */
6738 val = htab->glink_eh_frame->size - 4 - sizeof (glink_eh_frame_cie);
6739 bfd_put_32 (htab->elf.dynobj, val, p);
6740 p += 4;
6741 /* CIE pointer. */
6742 val = p - htab->glink_eh_frame->contents;
6743 bfd_put_32 (htab->elf.dynobj, val, p);
6744 p += 4;
6745 /* Offset to .glink. Set later. */
6746 p += 4;
6747 /* .glink size. */
6748 bfd_put_32 (htab->elf.dynobj, htab->glink->size, p);
6749 p += 4;
6750 /* Augmentation. */
6751 p += 1;
6752
6753 if (bfd_link_pic (info)
6754 && htab->elf.dynamic_sections_created)
6755 {
6756 bfd_vma adv = (htab->glink->size - GLINK_PLTRESOLVE + 8) >> 2;
6757 if (adv < 64)
6758 *p++ = DW_CFA_advance_loc + adv;
6759 else if (adv < 256)
6760 {
6761 *p++ = DW_CFA_advance_loc1;
6762 *p++ = adv;
6763 }
6764 else if (adv < 65536)
6765 {
6766 *p++ = DW_CFA_advance_loc2;
6767 bfd_put_16 (htab->elf.dynobj, adv, p);
6768 p += 2;
6769 }
6770 else
6771 {
6772 *p++ = DW_CFA_advance_loc4;
6773 bfd_put_32 (htab->elf.dynobj, adv, p);
6774 p += 4;
6775 }
6776 *p++ = DW_CFA_register;
6777 *p++ = 65;
6778 p++;
6779 *p++ = DW_CFA_advance_loc + 4;
6780 *p++ = DW_CFA_restore_extended;
6781 *p++ = 65;
6782 }
6783 BFD_ASSERT ((bfd_vma) ((p + 3 - htab->glink_eh_frame->contents) & -4)
6784 == htab->glink_eh_frame->size);
6785 }
6786
6787 return TRUE;
6788 }
6789
6790 /* Arrange to have _SDA_BASE_ or _SDA2_BASE_ stripped from the output
6791 if it looks like nothing is using them. */
6792
6793 static void
6794 maybe_strip_sdasym (bfd *output_bfd, elf_linker_section_t *lsect)
6795 {
6796 struct elf_link_hash_entry *sda = lsect->sym;
6797
6798 if (sda != NULL && !sda->ref_regular && sda->dynindx == -1)
6799 {
6800 asection *s;
6801
6802 s = bfd_get_section_by_name (output_bfd, lsect->name);
6803 if (s == NULL || bfd_section_removed_from_list (output_bfd, s))
6804 {
6805 s = bfd_get_section_by_name (output_bfd, lsect->bss_name);
6806 if (s == NULL || bfd_section_removed_from_list (output_bfd, s))
6807 {
6808 sda->def_regular = 0;
6809 /* This is somewhat magic. See elf_link_output_extsym. */
6810 sda->ref_dynamic = 1;
6811 sda->forced_local = 0;
6812 }
6813 }
6814 }
6815 }
6816
6817 void
6818 ppc_elf_maybe_strip_sdata_syms (struct bfd_link_info *info)
6819 {
6820 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
6821
6822 if (htab != NULL)
6823 {
6824 maybe_strip_sdasym (info->output_bfd, &htab->sdata[0]);
6825 maybe_strip_sdasym (info->output_bfd, &htab->sdata[1]);
6826 }
6827 }
6828
6829
6830 /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
6831
6832 static bfd_boolean
6833 ppc_elf_hash_symbol (struct elf_link_hash_entry *h)
6834 {
6835 if (h->plt.plist != NULL
6836 && !h->def_regular
6837 && (!h->pointer_equality_needed
6838 || !h->ref_regular_nonweak))
6839 return FALSE;
6840
6841 return _bfd_elf_hash_symbol (h);
6842 }
6843 \f
6844 #define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0]))
6845
6846 /* Relaxation trampolines. r12 is available for clobbering (r11, is
6847 used for some functions that are allowed to break the ABI). */
6848 static const int shared_stub_entry[] =
6849 {
6850 0x7c0802a6, /* mflr 0 */
6851 0x429f0005, /* bcl 20, 31, .Lxxx */
6852 0x7d8802a6, /* mflr 12 */
6853 0x3d8c0000, /* addis 12, 12, (xxx-.Lxxx)@ha */
6854 0x398c0000, /* addi 12, 12, (xxx-.Lxxx)@l */
6855 0x7c0803a6, /* mtlr 0 */
6856 0x7d8903a6, /* mtctr 12 */
6857 0x4e800420, /* bctr */
6858 };
6859
6860 static const int stub_entry[] =
6861 {
6862 0x3d800000, /* lis 12,xxx@ha */
6863 0x398c0000, /* addi 12,12,xxx@l */
6864 0x7d8903a6, /* mtctr 12 */
6865 0x4e800420, /* bctr */
6866 };
6867
6868 struct ppc_elf_relax_info
6869 {
6870 unsigned int workaround_size;
6871 unsigned int picfixup_size;
6872 };
6873
6874 /* This function implements long branch trampolines, and the ppc476
6875 icache bug workaround. Any section needing trampolines or patch
6876 space for the workaround has its size extended so that we can
6877 add trampolines at the end of the section. */
6878
6879 static bfd_boolean
6880 ppc_elf_relax_section (bfd *abfd,
6881 asection *isec,
6882 struct bfd_link_info *link_info,
6883 bfd_boolean *again)
6884 {
6885 struct one_branch_fixup
6886 {
6887 struct one_branch_fixup *next;
6888 asection *tsec;
6889 /* Final link, can use the symbol offset. For a
6890 relocatable link we use the symbol's index. */
6891 bfd_vma toff;
6892 bfd_vma trampoff;
6893 };
6894
6895 Elf_Internal_Shdr *symtab_hdr;
6896 bfd_byte *contents = NULL;
6897 Elf_Internal_Sym *isymbuf = NULL;
6898 Elf_Internal_Rela *internal_relocs = NULL;
6899 Elf_Internal_Rela *irel, *irelend = NULL;
6900 struct one_branch_fixup *branch_fixups = NULL;
6901 struct ppc_elf_relax_info *relax_info = NULL;
6902 unsigned changes = 0;
6903 bfd_boolean workaround_change;
6904 struct ppc_elf_link_hash_table *htab;
6905 bfd_size_type trampbase, trampoff, newsize, picfixup_size;
6906 asection *got2;
6907 bfd_boolean maybe_pasted;
6908
6909 *again = FALSE;
6910
6911 /* No need to do anything with non-alloc or non-code sections. */
6912 if ((isec->flags & SEC_ALLOC) == 0
6913 || (isec->flags & SEC_CODE) == 0
6914 || (isec->flags & SEC_LINKER_CREATED) != 0
6915 || isec->size < 4)
6916 return TRUE;
6917
6918 /* We cannot represent the required PIC relocs in the output, so don't
6919 do anything. The linker doesn't support mixing -shared and -r
6920 anyway. */
6921 if (bfd_link_relocatable (link_info) && bfd_link_pic (link_info))
6922 return TRUE;
6923
6924 htab = ppc_elf_hash_table (link_info);
6925 if (htab == NULL)
6926 return TRUE;
6927
6928 isec->size = (isec->size + 3) & -4;
6929 if (isec->rawsize == 0)
6930 isec->rawsize = isec->size;
6931 trampbase = isec->size;
6932
6933 BFD_ASSERT (isec->sec_info_type == SEC_INFO_TYPE_NONE
6934 || isec->sec_info_type == SEC_INFO_TYPE_TARGET);
6935 isec->sec_info_type = SEC_INFO_TYPE_TARGET;
6936
6937 if (htab->params->ppc476_workaround
6938 || htab->params->pic_fixup > 0)
6939 {
6940 if (elf_section_data (isec)->sec_info == NULL)
6941 {
6942 elf_section_data (isec)->sec_info
6943 = bfd_zalloc (abfd, sizeof (struct ppc_elf_relax_info));
6944 if (elf_section_data (isec)->sec_info == NULL)
6945 return FALSE;
6946 }
6947 relax_info = elf_section_data (isec)->sec_info;
6948 trampbase -= relax_info->workaround_size;
6949 }
6950
6951 maybe_pasted = (strcmp (isec->output_section->name, ".init") == 0
6952 || strcmp (isec->output_section->name, ".fini") == 0);
6953 /* Space for a branch around any trampolines. */
6954 trampoff = trampbase;
6955 if (maybe_pasted && trampbase == isec->rawsize)
6956 trampoff += 4;
6957
6958 symtab_hdr = &elf_symtab_hdr (abfd);
6959 picfixup_size = 0;
6960 if (htab->params->branch_trampolines
6961 || htab->params->pic_fixup > 0)
6962 {
6963 /* Get a copy of the native relocations. */
6964 if (isec->reloc_count != 0)
6965 {
6966 internal_relocs = _bfd_elf_link_read_relocs (abfd, isec, NULL, NULL,
6967 link_info->keep_memory);
6968 if (internal_relocs == NULL)
6969 goto error_return;
6970 }
6971
6972 got2 = bfd_get_section_by_name (abfd, ".got2");
6973
6974 irelend = internal_relocs + isec->reloc_count;
6975 for (irel = internal_relocs; irel < irelend; irel++)
6976 {
6977 unsigned long r_type = ELF32_R_TYPE (irel->r_info);
6978 bfd_vma toff, roff;
6979 asection *tsec;
6980 struct one_branch_fixup *f;
6981 size_t insn_offset = 0;
6982 bfd_vma max_branch_offset = 0, val;
6983 bfd_byte *hit_addr;
6984 unsigned long t0;
6985 struct elf_link_hash_entry *h;
6986 struct plt_entry **plist;
6987 unsigned char sym_type;
6988
6989 switch (r_type)
6990 {
6991 case R_PPC_REL24:
6992 case R_PPC_LOCAL24PC:
6993 case R_PPC_PLTREL24:
6994 max_branch_offset = 1 << 25;
6995 break;
6996
6997 case R_PPC_REL14:
6998 case R_PPC_REL14_BRTAKEN:
6999 case R_PPC_REL14_BRNTAKEN:
7000 max_branch_offset = 1 << 15;
7001 break;
7002
7003 case R_PPC_ADDR16_HA:
7004 if (htab->params->pic_fixup > 0)
7005 break;
7006 continue;
7007
7008 default:
7009 continue;
7010 }
7011
7012 /* Get the value of the symbol referred to by the reloc. */
7013 h = NULL;
7014 if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
7015 {
7016 /* A local symbol. */
7017 Elf_Internal_Sym *isym;
7018
7019 /* Read this BFD's local symbols. */
7020 if (isymbuf == NULL)
7021 {
7022 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
7023 if (isymbuf == NULL)
7024 isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
7025 symtab_hdr->sh_info, 0,
7026 NULL, NULL, NULL);
7027 if (isymbuf == 0)
7028 goto error_return;
7029 }
7030 isym = isymbuf + ELF32_R_SYM (irel->r_info);
7031 if (isym->st_shndx == SHN_UNDEF)
7032 tsec = bfd_und_section_ptr;
7033 else if (isym->st_shndx == SHN_ABS)
7034 tsec = bfd_abs_section_ptr;
7035 else if (isym->st_shndx == SHN_COMMON)
7036 tsec = bfd_com_section_ptr;
7037 else
7038 tsec = bfd_section_from_elf_index (abfd, isym->st_shndx);
7039
7040 toff = isym->st_value;
7041 sym_type = ELF_ST_TYPE (isym->st_info);
7042 }
7043 else
7044 {
7045 /* Global symbol handling. */
7046 unsigned long indx;
7047
7048 indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
7049 h = elf_sym_hashes (abfd)[indx];
7050
7051 while (h->root.type == bfd_link_hash_indirect
7052 || h->root.type == bfd_link_hash_warning)
7053 h = (struct elf_link_hash_entry *) h->root.u.i.link;
7054
7055 if (h->root.type == bfd_link_hash_defined
7056 || h->root.type == bfd_link_hash_defweak)
7057 {
7058 tsec = h->root.u.def.section;
7059 toff = h->root.u.def.value;
7060 }
7061 else if (h->root.type == bfd_link_hash_undefined
7062 || h->root.type == bfd_link_hash_undefweak)
7063 {
7064 tsec = bfd_und_section_ptr;
7065 toff = bfd_link_relocatable (link_info) ? indx : 0;
7066 }
7067 else
7068 continue;
7069
7070 /* If this branch is to __tls_get_addr then we may later
7071 optimise away the call. We won't be needing a long-
7072 branch stub in that case. */
7073 if (bfd_link_executable (link_info)
7074 && h == htab->tls_get_addr
7075 && irel != internal_relocs)
7076 {
7077 unsigned long t_symndx = ELF32_R_SYM (irel[-1].r_info);
7078 unsigned long t_rtype = ELF32_R_TYPE (irel[-1].r_info);
7079 unsigned int tls_mask = 0;
7080
7081 /* The previous reloc should be one of R_PPC_TLSGD or
7082 R_PPC_TLSLD, or for older object files, a reloc
7083 on the __tls_get_addr arg setup insn. Get tls
7084 mask bits from the symbol on that reloc. */
7085 if (t_symndx < symtab_hdr->sh_info)
7086 {
7087 bfd_vma *local_got_offsets = elf_local_got_offsets (abfd);
7088
7089 if (local_got_offsets != NULL)
7090 {
7091 struct plt_entry **local_plt = (struct plt_entry **)
7092 (local_got_offsets + symtab_hdr->sh_info);
7093 char *lgot_masks = (char *)
7094 (local_plt + symtab_hdr->sh_info);
7095 tls_mask = lgot_masks[t_symndx];
7096 }
7097 }
7098 else
7099 {
7100 struct elf_link_hash_entry *th
7101 = elf_sym_hashes (abfd)[t_symndx - symtab_hdr->sh_info];
7102
7103 while (th->root.type == bfd_link_hash_indirect
7104 || th->root.type == bfd_link_hash_warning)
7105 th = (struct elf_link_hash_entry *) th->root.u.i.link;
7106
7107 tls_mask
7108 = ((struct ppc_elf_link_hash_entry *) th)->tls_mask;
7109 }
7110
7111 /* The mask bits tell us if the call will be
7112 optimised away. */
7113 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0
7114 && (t_rtype == R_PPC_TLSGD
7115 || t_rtype == R_PPC_GOT_TLSGD16
7116 || t_rtype == R_PPC_GOT_TLSGD16_LO))
7117 continue;
7118 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0
7119 && (t_rtype == R_PPC_TLSLD
7120 || t_rtype == R_PPC_GOT_TLSLD16
7121 || t_rtype == R_PPC_GOT_TLSLD16_LO))
7122 continue;
7123 }
7124
7125 sym_type = h->type;
7126 }
7127
7128 if (r_type == R_PPC_ADDR16_HA)
7129 {
7130 if (h != NULL
7131 && !h->def_regular
7132 && h->protected_def
7133 && ppc_elf_hash_entry (h)->has_addr16_ha
7134 && ppc_elf_hash_entry (h)->has_addr16_lo)
7135 picfixup_size += 12;
7136 continue;
7137 }
7138
7139 /* The condition here under which we call find_plt_ent must
7140 match that in relocate_section. If we call find_plt_ent here
7141 but not in relocate_section, or vice versa, then the branch
7142 destination used here may be incorrect. */
7143 plist = NULL;
7144 if (h != NULL)
7145 {
7146 /* We know is_branch_reloc (r_type) is true. */
7147 if (h->type == STT_GNU_IFUNC
7148 || r_type == R_PPC_PLTREL24)
7149 plist = &h->plt.plist;
7150 }
7151 else if (sym_type == STT_GNU_IFUNC
7152 && elf_local_got_offsets (abfd) != NULL)
7153 {
7154 bfd_vma *local_got_offsets = elf_local_got_offsets (abfd);
7155 struct plt_entry **local_plt = (struct plt_entry **)
7156 (local_got_offsets + symtab_hdr->sh_info);
7157 plist = local_plt + ELF32_R_SYM (irel->r_info);
7158 }
7159 if (plist != NULL)
7160 {
7161 bfd_vma addend = 0;
7162 struct plt_entry *ent;
7163
7164 if (r_type == R_PPC_PLTREL24 && bfd_link_pic (link_info))
7165 addend = irel->r_addend;
7166 ent = find_plt_ent (plist, got2, addend);
7167 if (ent != NULL)
7168 {
7169 if (htab->plt_type == PLT_NEW
7170 || h == NULL
7171 || !htab->elf.dynamic_sections_created
7172 || h->dynindx == -1)
7173 {
7174 tsec = htab->glink;
7175 toff = ent->glink_offset;
7176 }
7177 else
7178 {
7179 tsec = htab->plt;
7180 toff = ent->plt.offset;
7181 }
7182 }
7183 }
7184
7185 /* If the branch and target are in the same section, you have
7186 no hope of adding stubs. We'll error out later should the
7187 branch overflow. */
7188 if (tsec == isec)
7189 continue;
7190
7191 /* There probably isn't any reason to handle symbols in
7192 SEC_MERGE sections; SEC_MERGE doesn't seem a likely
7193 attribute for a code section, and we are only looking at
7194 branches. However, implement it correctly here as a
7195 reference for other target relax_section functions. */
7196 if (0 && tsec->sec_info_type == SEC_INFO_TYPE_MERGE)
7197 {
7198 /* At this stage in linking, no SEC_MERGE symbol has been
7199 adjusted, so all references to such symbols need to be
7200 passed through _bfd_merged_section_offset. (Later, in
7201 relocate_section, all SEC_MERGE symbols *except* for
7202 section symbols have been adjusted.)
7203
7204 gas may reduce relocations against symbols in SEC_MERGE
7205 sections to a relocation against the section symbol when
7206 the original addend was zero. When the reloc is against
7207 a section symbol we should include the addend in the
7208 offset passed to _bfd_merged_section_offset, since the
7209 location of interest is the original symbol. On the
7210 other hand, an access to "sym+addend" where "sym" is not
7211 a section symbol should not include the addend; Such an
7212 access is presumed to be an offset from "sym"; The
7213 location of interest is just "sym". */
7214 if (sym_type == STT_SECTION)
7215 toff += irel->r_addend;
7216
7217 toff
7218 = _bfd_merged_section_offset (abfd, &tsec,
7219 elf_section_data (tsec)->sec_info,
7220 toff);
7221
7222 if (sym_type != STT_SECTION)
7223 toff += irel->r_addend;
7224 }
7225 /* PLTREL24 addends are special. */
7226 else if (r_type != R_PPC_PLTREL24)
7227 toff += irel->r_addend;
7228
7229 /* Attempted -shared link of non-pic code loses. */
7230 if ((!bfd_link_relocatable (link_info)
7231 && tsec == bfd_und_section_ptr)
7232 || tsec->output_section == NULL
7233 || (tsec->owner != NULL
7234 && (tsec->owner->flags & BFD_PLUGIN) != 0))
7235 continue;
7236
7237 roff = irel->r_offset;
7238
7239 /* If the branch is in range, no need to do anything. */
7240 if (tsec != bfd_und_section_ptr
7241 && (!bfd_link_relocatable (link_info)
7242 /* A relocatable link may have sections moved during
7243 final link, so do not presume they remain in range. */
7244 || tsec->output_section == isec->output_section))
7245 {
7246 bfd_vma symaddr, reladdr;
7247
7248 symaddr = tsec->output_section->vma + tsec->output_offset + toff;
7249 reladdr = isec->output_section->vma + isec->output_offset + roff;
7250 if (symaddr - reladdr + max_branch_offset
7251 < 2 * max_branch_offset)
7252 continue;
7253 }
7254
7255 /* Look for an existing fixup to this address. */
7256 for (f = branch_fixups; f ; f = f->next)
7257 if (f->tsec == tsec && f->toff == toff)
7258 break;
7259
7260 if (f == NULL)
7261 {
7262 size_t size;
7263 unsigned long stub_rtype;
7264
7265 val = trampoff - roff;
7266 if (val >= max_branch_offset)
7267 /* Oh dear, we can't reach a trampoline. Don't try to add
7268 one. We'll report an error later. */
7269 continue;
7270
7271 if (bfd_link_pic (link_info))
7272 {
7273 size = 4 * ARRAY_SIZE (shared_stub_entry);
7274 insn_offset = 12;
7275 }
7276 else
7277 {
7278 size = 4 * ARRAY_SIZE (stub_entry);
7279 insn_offset = 0;
7280 }
7281 stub_rtype = R_PPC_RELAX;
7282 if (tsec == htab->plt
7283 || tsec == htab->glink)
7284 {
7285 stub_rtype = R_PPC_RELAX_PLT;
7286 if (r_type == R_PPC_PLTREL24)
7287 stub_rtype = R_PPC_RELAX_PLTREL24;
7288 }
7289
7290 /* Hijack the old relocation. Since we need two
7291 relocations for this use a "composite" reloc. */
7292 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
7293 stub_rtype);
7294 irel->r_offset = trampoff + insn_offset;
7295 if (r_type == R_PPC_PLTREL24
7296 && stub_rtype != R_PPC_RELAX_PLTREL24)
7297 irel->r_addend = 0;
7298
7299 /* Record the fixup so we don't do it again this section. */
7300 f = bfd_malloc (sizeof (*f));
7301 f->next = branch_fixups;
7302 f->tsec = tsec;
7303 f->toff = toff;
7304 f->trampoff = trampoff;
7305 branch_fixups = f;
7306
7307 trampoff += size;
7308 changes++;
7309 }
7310 else
7311 {
7312 val = f->trampoff - roff;
7313 if (val >= max_branch_offset)
7314 continue;
7315
7316 /* Nop out the reloc, since we're finalizing things here. */
7317 irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
7318 }
7319
7320 /* Get the section contents. */
7321 if (contents == NULL)
7322 {
7323 /* Get cached copy if it exists. */
7324 if (elf_section_data (isec)->this_hdr.contents != NULL)
7325 contents = elf_section_data (isec)->this_hdr.contents;
7326 /* Go get them off disk. */
7327 else if (!bfd_malloc_and_get_section (abfd, isec, &contents))
7328 goto error_return;
7329 }
7330
7331 /* Fix up the existing branch to hit the trampoline. */
7332 hit_addr = contents + roff;
7333 switch (r_type)
7334 {
7335 case R_PPC_REL24:
7336 case R_PPC_LOCAL24PC:
7337 case R_PPC_PLTREL24:
7338 t0 = bfd_get_32 (abfd, hit_addr);
7339 t0 &= ~0x3fffffc;
7340 t0 |= val & 0x3fffffc;
7341 bfd_put_32 (abfd, t0, hit_addr);
7342 break;
7343
7344 case R_PPC_REL14:
7345 case R_PPC_REL14_BRTAKEN:
7346 case R_PPC_REL14_BRNTAKEN:
7347 t0 = bfd_get_32 (abfd, hit_addr);
7348 t0 &= ~0xfffc;
7349 t0 |= val & 0xfffc;
7350 bfd_put_32 (abfd, t0, hit_addr);
7351 break;
7352 }
7353 }
7354
7355 while (branch_fixups != NULL)
7356 {
7357 struct one_branch_fixup *f = branch_fixups;
7358 branch_fixups = branch_fixups->next;
7359 free (f);
7360 }
7361 }
7362
7363 workaround_change = FALSE;
7364 newsize = trampoff;
7365 if (htab->params->ppc476_workaround
7366 && (!bfd_link_relocatable (link_info)
7367 || isec->output_section->alignment_power >= htab->params->pagesize_p2))
7368 {
7369 bfd_vma addr, end_addr;
7370 unsigned int crossings;
7371 bfd_vma pagesize = (bfd_vma) 1 << htab->params->pagesize_p2;
7372
7373 addr = isec->output_section->vma + isec->output_offset;
7374 end_addr = addr + trampoff;
7375 addr &= -pagesize;
7376 crossings = ((end_addr & -pagesize) - addr) >> htab->params->pagesize_p2;
7377 if (crossings != 0)
7378 {
7379 /* Keep space aligned, to ensure the patch code itself does
7380 not cross a page. Don't decrease size calculated on a
7381 previous pass as otherwise we might never settle on a layout. */
7382 newsize = 15 - ((end_addr - 1) & 15);
7383 newsize += crossings * 16;
7384 if (relax_info->workaround_size < newsize)
7385 {
7386 relax_info->workaround_size = newsize;
7387 workaround_change = TRUE;
7388 }
7389 /* Ensure relocate_section is called. */
7390 isec->flags |= SEC_RELOC;
7391 }
7392 newsize = trampoff + relax_info->workaround_size;
7393 }
7394
7395 if (htab->params->pic_fixup > 0)
7396 {
7397 picfixup_size -= relax_info->picfixup_size;
7398 if (picfixup_size != 0)
7399 relax_info->picfixup_size += picfixup_size;
7400 newsize += relax_info->picfixup_size;
7401 }
7402
7403 if (changes != 0 || picfixup_size != 0 || workaround_change)
7404 isec->size = newsize;
7405
7406 if (isymbuf != NULL
7407 && symtab_hdr->contents != (unsigned char *) isymbuf)
7408 {
7409 if (! link_info->keep_memory)
7410 free (isymbuf);
7411 else
7412 {
7413 /* Cache the symbols for elf_link_input_bfd. */
7414 symtab_hdr->contents = (unsigned char *) isymbuf;
7415 }
7416 }
7417
7418 if (contents != NULL
7419 && elf_section_data (isec)->this_hdr.contents != contents)
7420 {
7421 if (!changes && !link_info->keep_memory)
7422 free (contents);
7423 else
7424 {
7425 /* Cache the section contents for elf_link_input_bfd. */
7426 elf_section_data (isec)->this_hdr.contents = contents;
7427 }
7428 }
7429
7430 changes += picfixup_size;
7431 if (changes != 0)
7432 {
7433 /* Append sufficient NOP relocs so we can write out relocation
7434 information for the trampolines. */
7435 Elf_Internal_Shdr *rel_hdr;
7436 Elf_Internal_Rela *new_relocs = bfd_malloc ((changes + isec->reloc_count)
7437 * sizeof (*new_relocs));
7438 unsigned ix;
7439
7440 if (!new_relocs)
7441 goto error_return;
7442 memcpy (new_relocs, internal_relocs,
7443 isec->reloc_count * sizeof (*new_relocs));
7444 for (ix = changes; ix--;)
7445 {
7446 irel = new_relocs + ix + isec->reloc_count;
7447
7448 irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
7449 }
7450 if (internal_relocs != elf_section_data (isec)->relocs)
7451 free (internal_relocs);
7452 elf_section_data (isec)->relocs = new_relocs;
7453 isec->reloc_count += changes;
7454 rel_hdr = _bfd_elf_single_rel_hdr (isec);
7455 rel_hdr->sh_size += changes * rel_hdr->sh_entsize;
7456 }
7457 else if (internal_relocs != NULL
7458 && elf_section_data (isec)->relocs != internal_relocs)
7459 free (internal_relocs);
7460
7461 *again = changes != 0 || workaround_change;
7462 return TRUE;
7463
7464 error_return:
7465 while (branch_fixups != NULL)
7466 {
7467 struct one_branch_fixup *f = branch_fixups;
7468 branch_fixups = branch_fixups->next;
7469 free (f);
7470 }
7471 if (isymbuf != NULL && (unsigned char *) isymbuf != symtab_hdr->contents)
7472 free (isymbuf);
7473 if (contents != NULL
7474 && elf_section_data (isec)->this_hdr.contents != contents)
7475 free (contents);
7476 if (internal_relocs != NULL
7477 && elf_section_data (isec)->relocs != internal_relocs)
7478 free (internal_relocs);
7479 return FALSE;
7480 }
7481 \f
7482 /* What to do when ld finds relocations against symbols defined in
7483 discarded sections. */
7484
7485 static unsigned int
7486 ppc_elf_action_discarded (asection *sec)
7487 {
7488 if (strcmp (".fixup", sec->name) == 0)
7489 return 0;
7490
7491 if (strcmp (".got2", sec->name) == 0)
7492 return 0;
7493
7494 return _bfd_elf_default_action_discarded (sec);
7495 }
7496 \f
7497 /* Fill in the address for a pointer generated in a linker section. */
7498
7499 static bfd_vma
7500 elf_finish_pointer_linker_section (bfd *input_bfd,
7501 elf_linker_section_t *lsect,
7502 struct elf_link_hash_entry *h,
7503 bfd_vma relocation,
7504 const Elf_Internal_Rela *rel)
7505 {
7506 elf_linker_section_pointers_t *linker_section_ptr;
7507
7508 BFD_ASSERT (lsect != NULL);
7509
7510 if (h != NULL)
7511 {
7512 /* Handle global symbol. */
7513 struct ppc_elf_link_hash_entry *eh;
7514
7515 eh = (struct ppc_elf_link_hash_entry *) h;
7516 BFD_ASSERT (eh->elf.def_regular);
7517 linker_section_ptr = eh->linker_section_pointer;
7518 }
7519 else
7520 {
7521 /* Handle local symbol. */
7522 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
7523
7524 BFD_ASSERT (is_ppc_elf (input_bfd));
7525 BFD_ASSERT (elf_local_ptr_offsets (input_bfd) != NULL);
7526 linker_section_ptr = elf_local_ptr_offsets (input_bfd)[r_symndx];
7527 }
7528
7529 linker_section_ptr = elf_find_pointer_linker_section (linker_section_ptr,
7530 rel->r_addend,
7531 lsect);
7532 BFD_ASSERT (linker_section_ptr != NULL);
7533
7534 /* Offset will always be a multiple of four, so use the bottom bit
7535 as a "written" flag. */
7536 if ((linker_section_ptr->offset & 1) == 0)
7537 {
7538 bfd_put_32 (lsect->section->owner,
7539 relocation + linker_section_ptr->addend,
7540 lsect->section->contents + linker_section_ptr->offset);
7541 linker_section_ptr->offset += 1;
7542 }
7543
7544 relocation = (lsect->section->output_section->vma
7545 + lsect->section->output_offset
7546 + linker_section_ptr->offset - 1
7547 - SYM_VAL (lsect->sym));
7548
7549 #ifdef DEBUG
7550 fprintf (stderr,
7551 "Finish pointer in linker section %s, offset = %ld (0x%lx)\n",
7552 lsect->name, (long) relocation, (long) relocation);
7553 #endif
7554
7555 return relocation;
7556 }
7557
7558 #define PPC_LO(v) ((v) & 0xffff)
7559 #define PPC_HI(v) (((v) >> 16) & 0xffff)
7560 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
7561
7562 static void
7563 write_glink_stub (struct plt_entry *ent, asection *plt_sec, unsigned char *p,
7564 struct bfd_link_info *info)
7565 {
7566 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
7567 bfd *output_bfd = info->output_bfd;
7568 bfd_vma plt;
7569
7570 plt = ((ent->plt.offset & ~1)
7571 + plt_sec->output_section->vma
7572 + plt_sec->output_offset);
7573
7574 if (bfd_link_pic (info))
7575 {
7576 bfd_vma got = 0;
7577
7578 if (ent->addend >= 32768)
7579 got = (ent->addend
7580 + ent->sec->output_section->vma
7581 + ent->sec->output_offset);
7582 else if (htab->elf.hgot != NULL)
7583 got = SYM_VAL (htab->elf.hgot);
7584
7585 plt -= got;
7586
7587 if (plt + 0x8000 < 0x10000)
7588 {
7589 bfd_put_32 (output_bfd, LWZ_11_30 + PPC_LO (plt), p);
7590 p += 4;
7591 bfd_put_32 (output_bfd, MTCTR_11, p);
7592 p += 4;
7593 bfd_put_32 (output_bfd, BCTR, p);
7594 p += 4;
7595 bfd_put_32 (output_bfd, htab->params->ppc476_workaround ? BA : NOP, p);
7596 p += 4;
7597 }
7598 else
7599 {
7600 bfd_put_32 (output_bfd, ADDIS_11_30 + PPC_HA (plt), p);
7601 p += 4;
7602 bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
7603 p += 4;
7604 bfd_put_32 (output_bfd, MTCTR_11, p);
7605 p += 4;
7606 bfd_put_32 (output_bfd, BCTR, p);
7607 p += 4;
7608 }
7609 }
7610 else
7611 {
7612 bfd_put_32 (output_bfd, LIS_11 + PPC_HA (plt), p);
7613 p += 4;
7614 bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
7615 p += 4;
7616 bfd_put_32 (output_bfd, MTCTR_11, p);
7617 p += 4;
7618 bfd_put_32 (output_bfd, BCTR, p);
7619 p += 4;
7620 }
7621 }
7622
7623 /* Return true if symbol is defined statically. */
7624
7625 static bfd_boolean
7626 is_static_defined (struct elf_link_hash_entry *h)
7627 {
7628 return ((h->root.type == bfd_link_hash_defined
7629 || h->root.type == bfd_link_hash_defweak)
7630 && h->root.u.def.section != NULL
7631 && h->root.u.def.section->output_section != NULL);
7632 }
7633
7634 /* If INSN is an opcode that may be used with an @tls operand, return
7635 the transformed insn for TLS optimisation, otherwise return 0. If
7636 REG is non-zero only match an insn with RB or RA equal to REG. */
7637
7638 unsigned int
7639 _bfd_elf_ppc_at_tls_transform (unsigned int insn, unsigned int reg)
7640 {
7641 unsigned int rtra;
7642
7643 if ((insn & (0x3f << 26)) != 31 << 26)
7644 return 0;
7645
7646 if (reg == 0 || ((insn >> 11) & 0x1f) == reg)
7647 rtra = insn & ((1 << 26) - (1 << 16));
7648 else if (((insn >> 16) & 0x1f) == reg)
7649 rtra = (insn & (0x1f << 21)) | ((insn & (0x1f << 11)) << 5);
7650 else
7651 return 0;
7652
7653 if ((insn & (0x3ff << 1)) == 266 << 1)
7654 /* add -> addi. */
7655 insn = 14 << 26;
7656 else if ((insn & (0x1f << 1)) == 23 << 1
7657 && ((insn & (0x1f << 6)) < 14 << 6
7658 || ((insn & (0x1f << 6)) >= 16 << 6
7659 && (insn & (0x1f << 6)) < 24 << 6)))
7660 /* load and store indexed -> dform. */
7661 insn = (32 | ((insn >> 6) & 0x1f)) << 26;
7662 else if ((insn & (((0x1a << 5) | 0x1f) << 1)) == 21 << 1)
7663 /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
7664 insn = ((58 | ((insn >> 6) & 4)) << 26) | ((insn >> 6) & 1);
7665 else if ((insn & (((0x1f << 5) | 0x1f) << 1)) == 341 << 1)
7666 /* lwax -> lwa. */
7667 insn = (58 << 26) | 2;
7668 else
7669 return 0;
7670 insn |= rtra;
7671 return insn;
7672 }
7673
7674 /* If INSN is an opcode that may be used with an @tprel operand, return
7675 the transformed insn for an undefined weak symbol, ie. with the
7676 thread pointer REG operand removed. Otherwise return 0. */
7677
7678 unsigned int
7679 _bfd_elf_ppc_at_tprel_transform (unsigned int insn, unsigned int reg)
7680 {
7681 if ((insn & (0x1f << 16)) == reg << 16
7682 && ((insn & (0x3f << 26)) == 14u << 26 /* addi */
7683 || (insn & (0x3f << 26)) == 15u << 26 /* addis */
7684 || (insn & (0x3f << 26)) == 32u << 26 /* lwz */
7685 || (insn & (0x3f << 26)) == 34u << 26 /* lbz */
7686 || (insn & (0x3f << 26)) == 36u << 26 /* stw */
7687 || (insn & (0x3f << 26)) == 38u << 26 /* stb */
7688 || (insn & (0x3f << 26)) == 40u << 26 /* lhz */
7689 || (insn & (0x3f << 26)) == 42u << 26 /* lha */
7690 || (insn & (0x3f << 26)) == 44u << 26 /* sth */
7691 || (insn & (0x3f << 26)) == 46u << 26 /* lmw */
7692 || (insn & (0x3f << 26)) == 47u << 26 /* stmw */
7693 || (insn & (0x3f << 26)) == 48u << 26 /* lfs */
7694 || (insn & (0x3f << 26)) == 50u << 26 /* lfd */
7695 || (insn & (0x3f << 26)) == 52u << 26 /* stfs */
7696 || (insn & (0x3f << 26)) == 54u << 26 /* stfd */
7697 || ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
7698 && (insn & 3) != 1)
7699 || ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */
7700 && ((insn & 3) == 0 || (insn & 3) == 3))))
7701 {
7702 insn &= ~(0x1f << 16);
7703 }
7704 else if ((insn & (0x1f << 21)) == reg << 21
7705 && ((insn & (0x3e << 26)) == 24u << 26 /* ori, oris */
7706 || (insn & (0x3e << 26)) == 26u << 26 /* xori,xoris */
7707 || (insn & (0x3e << 26)) == 28u << 26 /* andi,andis */))
7708 {
7709 insn &= ~(0x1f << 21);
7710 insn |= (insn & (0x1f << 16)) << 5;
7711 if ((insn & (0x3e << 26)) == 26 << 26 /* xori,xoris */)
7712 insn -= 2 >> 26; /* convert to ori,oris */
7713 }
7714 else
7715 insn = 0;
7716 return insn;
7717 }
7718
7719 static bfd_boolean
7720 is_insn_ds_form (unsigned int insn)
7721 {
7722 return ((insn & (0x3f << 26)) == 58u << 26 /* ld,ldu,lwa */
7723 || (insn & (0x3f << 26)) == 62u << 26 /* std,stdu,stq */
7724 || (insn & (0x3f << 26)) == 57u << 26 /* lfdp */
7725 || (insn & (0x3f << 26)) == 61u << 26 /* stfdp */);
7726 }
7727
7728 static bfd_boolean
7729 is_insn_dq_form (unsigned int insn)
7730 {
7731 return ((insn & (0x3f << 26)) == 56u << 26 /* lq */
7732 || ((insn & (0x3f << 26)) == (61u << 26) /* lxv, stxv */
7733 && (insn & 3) == 1));
7734 }
7735
7736 /* The RELOCATE_SECTION function is called by the ELF backend linker
7737 to handle the relocations for a section.
7738
7739 The relocs are always passed as Rela structures; if the section
7740 actually uses Rel structures, the r_addend field will always be
7741 zero.
7742
7743 This function is responsible for adjust the section contents as
7744 necessary, and (if using Rela relocs and generating a
7745 relocatable output file) adjusting the reloc addend as
7746 necessary.
7747
7748 This function does not have to worry about setting the reloc
7749 address or the reloc symbol index.
7750
7751 LOCAL_SYMS is a pointer to the swapped in local symbols.
7752
7753 LOCAL_SECTIONS is an array giving the section in the input file
7754 corresponding to the st_shndx field of each local symbol.
7755
7756 The global hash table entry for the global symbols can be found
7757 via elf_sym_hashes (input_bfd).
7758
7759 When generating relocatable output, this function must handle
7760 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
7761 going to be the section symbol corresponding to the output
7762 section, which means that the addend must be adjusted
7763 accordingly. */
7764
7765 static bfd_boolean
7766 ppc_elf_relocate_section (bfd *output_bfd,
7767 struct bfd_link_info *info,
7768 bfd *input_bfd,
7769 asection *input_section,
7770 bfd_byte *contents,
7771 Elf_Internal_Rela *relocs,
7772 Elf_Internal_Sym *local_syms,
7773 asection **local_sections)
7774 {
7775 Elf_Internal_Shdr *symtab_hdr;
7776 struct elf_link_hash_entry **sym_hashes;
7777 struct ppc_elf_link_hash_table *htab;
7778 Elf_Internal_Rela *rel;
7779 Elf_Internal_Rela *wrel;
7780 Elf_Internal_Rela *relend;
7781 Elf_Internal_Rela outrel;
7782 asection *got2;
7783 bfd_vma *local_got_offsets;
7784 bfd_boolean ret = TRUE;
7785 bfd_vma d_offset = (bfd_big_endian (output_bfd) ? 2 : 0);
7786 bfd_boolean is_vxworks_tls;
7787 unsigned int picfixup_size = 0;
7788 struct ppc_elf_relax_info *relax_info = NULL;
7789
7790 #ifdef DEBUG
7791 _bfd_error_handler ("ppc_elf_relocate_section called for %B section %A, "
7792 "%ld relocations%s",
7793 input_bfd, input_section,
7794 (long) input_section->reloc_count,
7795 (bfd_link_relocatable (info)) ? " (relocatable)" : "");
7796 #endif
7797
7798 got2 = bfd_get_section_by_name (input_bfd, ".got2");
7799
7800 /* Initialize howto table if not already done. */
7801 if (!ppc_elf_howto_table[R_PPC_ADDR32])
7802 ppc_elf_howto_init ();
7803
7804 htab = ppc_elf_hash_table (info);
7805 local_got_offsets = elf_local_got_offsets (input_bfd);
7806 symtab_hdr = &elf_symtab_hdr (input_bfd);
7807 sym_hashes = elf_sym_hashes (input_bfd);
7808 /* We have to handle relocations in vxworks .tls_vars sections
7809 specially, because the dynamic loader is 'weird'. */
7810 is_vxworks_tls = (htab->is_vxworks && bfd_link_pic (info)
7811 && !strcmp (input_section->output_section->name,
7812 ".tls_vars"));
7813 if (input_section->sec_info_type == SEC_INFO_TYPE_TARGET)
7814 relax_info = elf_section_data (input_section)->sec_info;
7815 rel = wrel = relocs;
7816 relend = relocs + input_section->reloc_count;
7817 for (; rel < relend; wrel++, rel++)
7818 {
7819 enum elf_ppc_reloc_type r_type;
7820 bfd_vma addend;
7821 bfd_reloc_status_type r;
7822 Elf_Internal_Sym *sym;
7823 asection *sec;
7824 struct elf_link_hash_entry *h;
7825 const char *sym_name;
7826 reloc_howto_type *howto;
7827 unsigned long r_symndx;
7828 bfd_vma relocation;
7829 bfd_vma branch_bit, from;
7830 bfd_boolean unresolved_reloc;
7831 bfd_boolean warned;
7832 unsigned int tls_type, tls_mask, tls_gd;
7833 struct plt_entry **ifunc;
7834 struct reloc_howto_struct alt_howto;
7835
7836 again:
7837 r_type = ELF32_R_TYPE (rel->r_info);
7838 sym = NULL;
7839 sec = NULL;
7840 h = NULL;
7841 unresolved_reloc = FALSE;
7842 warned = FALSE;
7843 r_symndx = ELF32_R_SYM (rel->r_info);
7844
7845 if (r_symndx < symtab_hdr->sh_info)
7846 {
7847 sym = local_syms + r_symndx;
7848 sec = local_sections[r_symndx];
7849 sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
7850
7851 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
7852 }
7853 else
7854 {
7855 bfd_boolean ignored;
7856
7857 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
7858 r_symndx, symtab_hdr, sym_hashes,
7859 h, sec, relocation,
7860 unresolved_reloc, warned, ignored);
7861
7862 sym_name = h->root.root.string;
7863 }
7864
7865 if (sec != NULL && discarded_section (sec))
7866 {
7867 /* For relocs against symbols from removed linkonce sections,
7868 or sections discarded by a linker script, we just want the
7869 section contents zeroed. Avoid any special processing. */
7870 howto = NULL;
7871 if (r_type < R_PPC_max)
7872 howto = ppc_elf_howto_table[r_type];
7873
7874 _bfd_clear_contents (howto, input_bfd, input_section,
7875 contents + rel->r_offset);
7876 wrel->r_offset = rel->r_offset;
7877 wrel->r_info = 0;
7878 wrel->r_addend = 0;
7879
7880 /* For ld -r, remove relocations in debug sections against
7881 sections defined in discarded sections. Not done for
7882 non-debug to preserve relocs in .eh_frame which the
7883 eh_frame editing code expects to be present. */
7884 if (bfd_link_relocatable (info)
7885 && (input_section->flags & SEC_DEBUGGING))
7886 wrel--;
7887
7888 continue;
7889 }
7890
7891 if (bfd_link_relocatable (info))
7892 {
7893 if (got2 != NULL
7894 && r_type == R_PPC_PLTREL24
7895 && rel->r_addend != 0)
7896 {
7897 /* R_PPC_PLTREL24 is rather special. If non-zero, the
7898 addend specifies the GOT pointer offset within .got2. */
7899 rel->r_addend += got2->output_offset;
7900 }
7901 if (r_type != R_PPC_RELAX_PLT
7902 && r_type != R_PPC_RELAX_PLTREL24
7903 && r_type != R_PPC_RELAX)
7904 goto copy_reloc;
7905 }
7906
7907 /* TLS optimizations. Replace instruction sequences and relocs
7908 based on information we collected in tls_optimize. We edit
7909 RELOCS so that --emit-relocs will output something sensible
7910 for the final instruction stream. */
7911 tls_mask = 0;
7912 tls_gd = 0;
7913 if (h != NULL)
7914 tls_mask = ((struct ppc_elf_link_hash_entry *) h)->tls_mask;
7915 else if (local_got_offsets != NULL)
7916 {
7917 struct plt_entry **local_plt;
7918 char *lgot_masks;
7919 local_plt
7920 = (struct plt_entry **) (local_got_offsets + symtab_hdr->sh_info);
7921 lgot_masks = (char *) (local_plt + symtab_hdr->sh_info);
7922 tls_mask = lgot_masks[r_symndx];
7923 }
7924
7925 /* Ensure reloc mapping code below stays sane. */
7926 if ((R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TLSGD16 & 3)
7927 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TLSGD16_LO & 3)
7928 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TLSGD16_HI & 3)
7929 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TLSGD16_HA & 3)
7930 || (R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TPREL16 & 3)
7931 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TPREL16_LO & 3)
7932 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TPREL16_HI & 3)
7933 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TPREL16_HA & 3))
7934 abort ();
7935 switch (r_type)
7936 {
7937 default:
7938 break;
7939
7940 case R_PPC_GOT_TPREL16:
7941 case R_PPC_GOT_TPREL16_LO:
7942 if ((tls_mask & TLS_TLS) != 0
7943 && (tls_mask & TLS_TPREL) == 0)
7944 {
7945 bfd_vma insn;
7946
7947 insn = bfd_get_32 (output_bfd,
7948 contents + rel->r_offset - d_offset);
7949 insn &= 31 << 21;
7950 insn |= 0x3c020000; /* addis 0,2,0 */
7951 bfd_put_32 (output_bfd, insn,
7952 contents + rel->r_offset - d_offset);
7953 r_type = R_PPC_TPREL16_HA;
7954 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7955 }
7956 break;
7957
7958 case R_PPC_TLS:
7959 if ((tls_mask & TLS_TLS) != 0
7960 && (tls_mask & TLS_TPREL) == 0)
7961 {
7962 bfd_vma insn;
7963
7964 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
7965 insn = _bfd_elf_ppc_at_tls_transform (insn, 2);
7966 if (insn == 0)
7967 abort ();
7968 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
7969 r_type = R_PPC_TPREL16_LO;
7970 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7971
7972 /* Was PPC_TLS which sits on insn boundary, now
7973 PPC_TPREL16_LO which is at low-order half-word. */
7974 rel->r_offset += d_offset;
7975 }
7976 break;
7977
7978 case R_PPC_GOT_TLSGD16_HI:
7979 case R_PPC_GOT_TLSGD16_HA:
7980 tls_gd = TLS_TPRELGD;
7981 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
7982 goto tls_gdld_hi;
7983 break;
7984
7985 case R_PPC_GOT_TLSLD16_HI:
7986 case R_PPC_GOT_TLSLD16_HA:
7987 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
7988 {
7989 tls_gdld_hi:
7990 if ((tls_mask & tls_gd) != 0)
7991 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
7992 + R_PPC_GOT_TPREL16);
7993 else
7994 {
7995 rel->r_offset -= d_offset;
7996 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
7997 r_type = R_PPC_NONE;
7998 }
7999 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
8000 }
8001 break;
8002
8003 case R_PPC_GOT_TLSGD16:
8004 case R_PPC_GOT_TLSGD16_LO:
8005 tls_gd = TLS_TPRELGD;
8006 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
8007 goto tls_ldgd_opt;
8008 break;
8009
8010 case R_PPC_GOT_TLSLD16:
8011 case R_PPC_GOT_TLSLD16_LO:
8012 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
8013 {
8014 unsigned int insn1, insn2;
8015 bfd_vma offset;
8016
8017 tls_ldgd_opt:
8018 offset = (bfd_vma) -1;
8019 /* If not using the newer R_PPC_TLSGD/LD to mark
8020 __tls_get_addr calls, we must trust that the call
8021 stays with its arg setup insns, ie. that the next
8022 reloc is the __tls_get_addr call associated with
8023 the current reloc. Edit both insns. */
8024 if (input_section->has_tls_get_addr_call
8025 && rel + 1 < relend
8026 && branch_reloc_hash_match (input_bfd, rel + 1,
8027 htab->tls_get_addr))
8028 offset = rel[1].r_offset;
8029 /* We read the low GOT_TLS insn because we need to keep
8030 the destination reg. It may be something other than
8031 the usual r3, and moved to r3 before the call by
8032 intervening code. */
8033 insn1 = bfd_get_32 (output_bfd,
8034 contents + rel->r_offset - d_offset);
8035 if ((tls_mask & tls_gd) != 0)
8036 {
8037 /* IE */
8038 insn1 &= (0x1f << 21) | (0x1f << 16);
8039 insn1 |= 32 << 26; /* lwz */
8040 if (offset != (bfd_vma) -1)
8041 {
8042 rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
8043 insn2 = 0x7c631214; /* add 3,3,2 */
8044 bfd_put_32 (output_bfd, insn2, contents + offset);
8045 }
8046 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
8047 + R_PPC_GOT_TPREL16);
8048 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
8049 }
8050 else
8051 {
8052 /* LE */
8053 insn1 &= 0x1f << 21;
8054 insn1 |= 0x3c020000; /* addis r,2,0 */
8055 if (tls_gd == 0)
8056 {
8057 /* Was an LD reloc. */
8058 for (r_symndx = 0;
8059 r_symndx < symtab_hdr->sh_info;
8060 r_symndx++)
8061 if (local_sections[r_symndx] == sec)
8062 break;
8063 if (r_symndx >= symtab_hdr->sh_info)
8064 r_symndx = STN_UNDEF;
8065 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
8066 if (r_symndx != STN_UNDEF)
8067 rel->r_addend -= (local_syms[r_symndx].st_value
8068 + sec->output_offset
8069 + sec->output_section->vma);
8070 }
8071 r_type = R_PPC_TPREL16_HA;
8072 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
8073 if (offset != (bfd_vma) -1)
8074 {
8075 rel[1].r_info = ELF32_R_INFO (r_symndx, R_PPC_TPREL16_LO);
8076 rel[1].r_offset = offset + d_offset;
8077 rel[1].r_addend = rel->r_addend;
8078 insn2 = 0x38630000; /* addi 3,3,0 */
8079 bfd_put_32 (output_bfd, insn2, contents + offset);
8080 }
8081 }
8082 bfd_put_32 (output_bfd, insn1,
8083 contents + rel->r_offset - d_offset);
8084 if (tls_gd == 0)
8085 {
8086 /* We changed the symbol on an LD reloc. Start over
8087 in order to get h, sym, sec etc. right. */
8088 goto again;
8089 }
8090 }
8091 break;
8092
8093 case R_PPC_TLSGD:
8094 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
8095 {
8096 unsigned int insn2;
8097 bfd_vma offset = rel->r_offset;
8098
8099 if ((tls_mask & TLS_TPRELGD) != 0)
8100 {
8101 /* IE */
8102 r_type = R_PPC_NONE;
8103 insn2 = 0x7c631214; /* add 3,3,2 */
8104 }
8105 else
8106 {
8107 /* LE */
8108 r_type = R_PPC_TPREL16_LO;
8109 rel->r_offset += d_offset;
8110 insn2 = 0x38630000; /* addi 3,3,0 */
8111 }
8112 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
8113 bfd_put_32 (output_bfd, insn2, contents + offset);
8114 /* Zap the reloc on the _tls_get_addr call too. */
8115 BFD_ASSERT (offset == rel[1].r_offset);
8116 rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
8117 }
8118 break;
8119
8120 case R_PPC_TLSLD:
8121 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
8122 {
8123 unsigned int insn2;
8124
8125 for (r_symndx = 0;
8126 r_symndx < symtab_hdr->sh_info;
8127 r_symndx++)
8128 if (local_sections[r_symndx] == sec)
8129 break;
8130 if (r_symndx >= symtab_hdr->sh_info)
8131 r_symndx = STN_UNDEF;
8132 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
8133 if (r_symndx != STN_UNDEF)
8134 rel->r_addend -= (local_syms[r_symndx].st_value
8135 + sec->output_offset
8136 + sec->output_section->vma);
8137
8138 rel->r_info = ELF32_R_INFO (r_symndx, R_PPC_TPREL16_LO);
8139 rel->r_offset += d_offset;
8140 insn2 = 0x38630000; /* addi 3,3,0 */
8141 bfd_put_32 (output_bfd, insn2,
8142 contents + rel->r_offset - d_offset);
8143 /* Zap the reloc on the _tls_get_addr call too. */
8144 BFD_ASSERT (rel->r_offset - d_offset == rel[1].r_offset);
8145 rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
8146 goto again;
8147 }
8148 break;
8149 }
8150
8151 /* Handle other relocations that tweak non-addend part of insn. */
8152 branch_bit = 0;
8153 switch (r_type)
8154 {
8155 default:
8156 break;
8157
8158 /* Branch taken prediction relocations. */
8159 case R_PPC_ADDR14_BRTAKEN:
8160 case R_PPC_REL14_BRTAKEN:
8161 branch_bit = BRANCH_PREDICT_BIT;
8162 /* Fall through. */
8163
8164 /* Branch not taken prediction relocations. */
8165 case R_PPC_ADDR14_BRNTAKEN:
8166 case R_PPC_REL14_BRNTAKEN:
8167 {
8168 bfd_vma insn;
8169
8170 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
8171 insn &= ~BRANCH_PREDICT_BIT;
8172 insn |= branch_bit;
8173
8174 from = (rel->r_offset
8175 + input_section->output_offset
8176 + input_section->output_section->vma);
8177
8178 /* Invert 'y' bit if not the default. */
8179 if ((bfd_signed_vma) (relocation + rel->r_addend - from) < 0)
8180 insn ^= BRANCH_PREDICT_BIT;
8181
8182 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
8183 break;
8184 }
8185 }
8186
8187 if (ELIMINATE_COPY_RELOCS
8188 && h != NULL
8189 && !h->def_regular
8190 && h->protected_def
8191 && ppc_elf_hash_entry (h)->has_addr16_ha
8192 && ppc_elf_hash_entry (h)->has_addr16_lo
8193 && htab->params->pic_fixup > 0)
8194 {
8195 /* Convert lis;addi or lis;load/store accessing a protected
8196 variable defined in a shared library to PIC. */
8197 unsigned int insn;
8198
8199 if (r_type == R_PPC_ADDR16_HA)
8200 {
8201 insn = bfd_get_32 (output_bfd,
8202 contents + rel->r_offset - d_offset);
8203 if ((insn & (0x3f << 26)) == (15u << 26)
8204 && (insn & (0x1f << 16)) == 0 /* lis */)
8205 {
8206 bfd_byte *p;
8207 bfd_vma off;
8208 bfd_vma got_addr;
8209
8210 p = (contents + input_section->size
8211 - relax_info->workaround_size
8212 - relax_info->picfixup_size
8213 + picfixup_size);
8214 off = (p - contents) - (rel->r_offset - d_offset);
8215 if (off > 0x1fffffc || (off & 3) != 0)
8216 info->callbacks->einfo
8217 (_("%P: %H: fixup branch overflow\n"),
8218 input_bfd, input_section, rel->r_offset);
8219
8220 bfd_put_32 (output_bfd, B | off,
8221 contents + rel->r_offset - d_offset);
8222 got_addr = (htab->got->output_section->vma
8223 + htab->got->output_offset
8224 + (h->got.offset & ~1));
8225 wrel->r_offset = (p - contents) + d_offset;
8226 wrel->r_info = ELF32_R_INFO (0, R_PPC_ADDR16_HA);
8227 wrel->r_addend = got_addr;
8228 insn &= ~0xffff;
8229 insn |= ((unsigned int )(got_addr + 0x8000) >> 16) & 0xffff;
8230 bfd_put_32 (output_bfd, insn, p);
8231
8232 /* Convert lis to lwz, loading address from GOT. */
8233 insn &= ~0xffff;
8234 insn ^= (32u ^ 15u) << 26;
8235 insn |= (insn & (0x1f << 21)) >> 5;
8236 insn |= got_addr & 0xffff;
8237 bfd_put_32 (output_bfd, insn, p + 4);
8238
8239 bfd_put_32 (output_bfd, B | ((-4 - off) & 0x3ffffff), p + 8);
8240 picfixup_size += 12;
8241
8242 /* Use one of the spare relocs, so --emit-relocs
8243 output is reasonable. */
8244 memmove (rel + 1, rel, (relend - rel - 1) * sizeof (*rel));
8245 wrel++, rel++;
8246 rel->r_offset = wrel[-1].r_offset + 4;
8247 rel->r_info = ELF32_R_INFO (0, R_PPC_ADDR16_LO);
8248 rel->r_addend = wrel[-1].r_addend;
8249
8250 /* Continue on as if we had a got reloc, to output
8251 dynamic reloc. */
8252 r_type = R_PPC_GOT16_LO;
8253 }
8254 else
8255 info->callbacks->einfo
8256 (_("%P: %H: error: %s with unexpected instruction %x\n"),
8257 input_bfd, input_section, rel->r_offset,
8258 "R_PPC_ADDR16_HA", insn);
8259 }
8260 else if (r_type == R_PPC_ADDR16_LO)
8261 {
8262 insn = bfd_get_32 (output_bfd,
8263 contents + rel->r_offset - d_offset);
8264 if ((insn & (0x3f << 26)) == 14u << 26 /* addi */
8265 || (insn & (0x3f << 26)) == 32u << 26 /* lwz */
8266 || (insn & (0x3f << 26)) == 34u << 26 /* lbz */
8267 || (insn & (0x3f << 26)) == 36u << 26 /* stw */
8268 || (insn & (0x3f << 26)) == 38u << 26 /* stb */
8269 || (insn & (0x3f << 26)) == 40u << 26 /* lhz */
8270 || (insn & (0x3f << 26)) == 42u << 26 /* lha */
8271 || (insn & (0x3f << 26)) == 44u << 26 /* sth */
8272 || (insn & (0x3f << 26)) == 46u << 26 /* lmw */
8273 || (insn & (0x3f << 26)) == 47u << 26 /* stmw */
8274 || (insn & (0x3f << 26)) == 48u << 26 /* lfs */
8275 || (insn & (0x3f << 26)) == 50u << 26 /* lfd */
8276 || (insn & (0x3f << 26)) == 52u << 26 /* stfs */
8277 || (insn & (0x3f << 26)) == 54u << 26 /* stfd */
8278 || ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
8279 && (insn & 3) != 1)
8280 || ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */
8281 && ((insn & 3) == 0 || (insn & 3) == 3)))
8282 {
8283 /* Arrange to apply the reloc addend, if any. */
8284 relocation = 0;
8285 unresolved_reloc = FALSE;
8286 rel->r_info = ELF32_R_INFO (0, r_type);
8287 }
8288 else
8289 info->callbacks->einfo
8290 (_("%P: %H: error: %s with unexpected instruction %x\n"),
8291 input_bfd, input_section, rel->r_offset,
8292 "R_PPC_ADDR16_LO", insn);
8293 }
8294 }
8295
8296 ifunc = NULL;
8297 if (!htab->is_vxworks)
8298 {
8299 struct plt_entry *ent;
8300
8301 if (h != NULL)
8302 {
8303 if (h->type == STT_GNU_IFUNC)
8304 ifunc = &h->plt.plist;
8305 }
8306 else if (local_got_offsets != NULL
8307 && ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
8308 {
8309 struct plt_entry **local_plt;
8310
8311 local_plt = (struct plt_entry **) (local_got_offsets
8312 + symtab_hdr->sh_info);
8313 ifunc = local_plt + r_symndx;
8314 }
8315
8316 ent = NULL;
8317 if (ifunc != NULL
8318 && (!bfd_link_pic (info)
8319 || is_branch_reloc (r_type)))
8320 {
8321 addend = 0;
8322 if (r_type == R_PPC_PLTREL24 && bfd_link_pic (info))
8323 addend = rel->r_addend;
8324 ent = find_plt_ent (ifunc, got2, addend);
8325 }
8326 if (ent != NULL)
8327 {
8328 if (bfd_link_pic (info)
8329 && ent->sec != got2
8330 && htab->plt_type != PLT_NEW
8331 && (!htab->elf.dynamic_sections_created
8332 || h == NULL
8333 || h->dynindx == -1))
8334 {
8335 /* Uh oh, we are going to create a pic glink stub
8336 for an ifunc (here for h == NULL and later in
8337 finish_dynamic_symbol for h != NULL), and
8338 apparently are using code compiled with
8339 -mbss-plt. The difficulty is that -mbss-plt code
8340 gives no indication via a magic PLTREL24 addend
8341 whether r30 is equal to _GLOBAL_OFFSET_TABLE_ or
8342 is pointing into a .got2 section (and how far
8343 into .got2). */
8344 info->callbacks->einfo
8345 (_("%X%P: %H: unsupported bss-plt -fPIC ifunc %s\n"),
8346 input_bfd, input_section, rel->r_offset, sym_name);
8347 }
8348 if (h == NULL && (ent->plt.offset & 1) == 0)
8349 {
8350 Elf_Internal_Rela rela;
8351 bfd_byte *loc;
8352
8353 rela.r_offset = (htab->iplt->output_section->vma
8354 + htab->iplt->output_offset
8355 + ent->plt.offset);
8356 rela.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
8357 rela.r_addend = relocation;
8358 loc = htab->reliplt->contents;
8359 loc += (htab->reliplt->reloc_count++
8360 * sizeof (Elf32_External_Rela));
8361 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
8362
8363 ent->plt.offset |= 1;
8364 }
8365 if (h == NULL && (ent->glink_offset & 1) == 0)
8366 {
8367 unsigned char *p = ((unsigned char *) htab->glink->contents
8368 + ent->glink_offset);
8369 write_glink_stub (ent, htab->iplt, p, info);
8370 ent->glink_offset |= 1;
8371 }
8372
8373 unresolved_reloc = FALSE;
8374 if (htab->plt_type == PLT_NEW
8375 || !htab->elf.dynamic_sections_created
8376 || h == NULL
8377 || h->dynindx == -1)
8378 relocation = (htab->glink->output_section->vma
8379 + htab->glink->output_offset
8380 + (ent->glink_offset & ~1));
8381 else
8382 relocation = (htab->plt->output_section->vma
8383 + htab->plt->output_offset
8384 + ent->plt.offset);
8385 }
8386 }
8387
8388 addend = rel->r_addend;
8389 tls_type = 0;
8390 howto = NULL;
8391 if (r_type < R_PPC_max)
8392 howto = ppc_elf_howto_table[r_type];
8393 switch (r_type)
8394 {
8395 default:
8396 info->callbacks->einfo
8397 (_("%P: %B: unknown relocation type %d for symbol %s\n"),
8398 input_bfd, (int) r_type, sym_name);
8399
8400 bfd_set_error (bfd_error_bad_value);
8401 ret = FALSE;
8402 goto copy_reloc;
8403
8404 case R_PPC_NONE:
8405 case R_PPC_TLS:
8406 case R_PPC_TLSGD:
8407 case R_PPC_TLSLD:
8408 case R_PPC_EMB_MRKREF:
8409 case R_PPC_GNU_VTINHERIT:
8410 case R_PPC_GNU_VTENTRY:
8411 goto copy_reloc;
8412
8413 /* GOT16 relocations. Like an ADDR16 using the symbol's
8414 address in the GOT as relocation value instead of the
8415 symbol's value itself. Also, create a GOT entry for the
8416 symbol and put the symbol value there. */
8417 case R_PPC_GOT_TLSGD16:
8418 case R_PPC_GOT_TLSGD16_LO:
8419 case R_PPC_GOT_TLSGD16_HI:
8420 case R_PPC_GOT_TLSGD16_HA:
8421 tls_type = TLS_TLS | TLS_GD;
8422 goto dogot;
8423
8424 case R_PPC_GOT_TLSLD16:
8425 case R_PPC_GOT_TLSLD16_LO:
8426 case R_PPC_GOT_TLSLD16_HI:
8427 case R_PPC_GOT_TLSLD16_HA:
8428 tls_type = TLS_TLS | TLS_LD;
8429 goto dogot;
8430
8431 case R_PPC_GOT_TPREL16:
8432 case R_PPC_GOT_TPREL16_LO:
8433 case R_PPC_GOT_TPREL16_HI:
8434 case R_PPC_GOT_TPREL16_HA:
8435 tls_type = TLS_TLS | TLS_TPREL;
8436 goto dogot;
8437
8438 case R_PPC_GOT_DTPREL16:
8439 case R_PPC_GOT_DTPREL16_LO:
8440 case R_PPC_GOT_DTPREL16_HI:
8441 case R_PPC_GOT_DTPREL16_HA:
8442 tls_type = TLS_TLS | TLS_DTPREL;
8443 goto dogot;
8444
8445 case R_PPC_GOT16:
8446 case R_PPC_GOT16_LO:
8447 case R_PPC_GOT16_HI:
8448 case R_PPC_GOT16_HA:
8449 tls_mask = 0;
8450 dogot:
8451 {
8452 /* Relocation is to the entry for this symbol in the global
8453 offset table. */
8454 bfd_vma off;
8455 bfd_vma *offp;
8456 unsigned long indx;
8457
8458 if (htab->got == NULL)
8459 abort ();
8460
8461 indx = 0;
8462 if (tls_type == (TLS_TLS | TLS_LD)
8463 && (h == NULL
8464 || !h->def_dynamic))
8465 offp = &htab->tlsld_got.offset;
8466 else if (h != NULL)
8467 {
8468 bfd_boolean dyn;
8469 dyn = htab->elf.dynamic_sections_created;
8470 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, bfd_link_pic (info), h)
8471 || (bfd_link_pic (info)
8472 && SYMBOL_REFERENCES_LOCAL (info, h)))
8473 /* This is actually a static link, or it is a
8474 -Bsymbolic link and the symbol is defined
8475 locally, or the symbol was forced to be local
8476 because of a version file. */
8477 ;
8478 else
8479 {
8480 BFD_ASSERT (h->dynindx != -1);
8481 indx = h->dynindx;
8482 unresolved_reloc = FALSE;
8483 }
8484 offp = &h->got.offset;
8485 }
8486 else
8487 {
8488 if (local_got_offsets == NULL)
8489 abort ();
8490 offp = &local_got_offsets[r_symndx];
8491 }
8492
8493 /* The offset must always be a multiple of 4. We use the
8494 least significant bit to record whether we have already
8495 processed this entry. */
8496 off = *offp;
8497 if ((off & 1) != 0)
8498 off &= ~1;
8499 else
8500 {
8501 unsigned int tls_m = (tls_mask
8502 & (TLS_LD | TLS_GD | TLS_DTPREL
8503 | TLS_TPREL | TLS_TPRELGD));
8504
8505 if (offp == &htab->tlsld_got.offset)
8506 tls_m = TLS_LD;
8507 else if (h == NULL
8508 || !h->def_dynamic)
8509 tls_m &= ~TLS_LD;
8510
8511 /* We might have multiple got entries for this sym.
8512 Initialize them all. */
8513 do
8514 {
8515 int tls_ty = 0;
8516
8517 if ((tls_m & TLS_LD) != 0)
8518 {
8519 tls_ty = TLS_TLS | TLS_LD;
8520 tls_m &= ~TLS_LD;
8521 }
8522 else if ((tls_m & TLS_GD) != 0)
8523 {
8524 tls_ty = TLS_TLS | TLS_GD;
8525 tls_m &= ~TLS_GD;
8526 }
8527 else if ((tls_m & TLS_DTPREL) != 0)
8528 {
8529 tls_ty = TLS_TLS | TLS_DTPREL;
8530 tls_m &= ~TLS_DTPREL;
8531 }
8532 else if ((tls_m & (TLS_TPREL | TLS_TPRELGD)) != 0)
8533 {
8534 tls_ty = TLS_TLS | TLS_TPREL;
8535 tls_m = 0;
8536 }
8537
8538 /* Generate relocs for the dynamic linker. */
8539 if ((bfd_link_pic (info) || indx != 0)
8540 && (offp == &htab->tlsld_got.offset
8541 || h == NULL
8542 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
8543 || h->root.type != bfd_link_hash_undefweak))
8544 {
8545 asection *rsec = htab->relgot;
8546 bfd_byte * loc;
8547
8548 if (ifunc != NULL)
8549 rsec = htab->reliplt;
8550 outrel.r_offset = (htab->got->output_section->vma
8551 + htab->got->output_offset
8552 + off);
8553 outrel.r_addend = 0;
8554 if (tls_ty & (TLS_LD | TLS_GD))
8555 {
8556 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPMOD32);
8557 if (tls_ty == (TLS_TLS | TLS_GD))
8558 {
8559 loc = rsec->contents;
8560 loc += (rsec->reloc_count++
8561 * sizeof (Elf32_External_Rela));
8562 bfd_elf32_swap_reloca_out (output_bfd,
8563 &outrel, loc);
8564 outrel.r_offset += 4;
8565 outrel.r_info
8566 = ELF32_R_INFO (indx, R_PPC_DTPREL32);
8567 }
8568 }
8569 else if (tls_ty == (TLS_TLS | TLS_DTPREL))
8570 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPREL32);
8571 else if (tls_ty == (TLS_TLS | TLS_TPREL))
8572 outrel.r_info = ELF32_R_INFO (indx, R_PPC_TPREL32);
8573 else if (indx != 0)
8574 outrel.r_info = ELF32_R_INFO (indx, R_PPC_GLOB_DAT);
8575 else if (ifunc != NULL)
8576 outrel.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
8577 else
8578 outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
8579 if (indx == 0 && tls_ty != (TLS_TLS | TLS_LD))
8580 {
8581 outrel.r_addend += relocation;
8582 if (tls_ty & (TLS_GD | TLS_DTPREL | TLS_TPREL))
8583 {
8584 if (htab->elf.tls_sec == NULL)
8585 outrel.r_addend = 0;
8586 else
8587 outrel.r_addend -= htab->elf.tls_sec->vma;
8588 }
8589 }
8590 loc = rsec->contents;
8591 loc += (rsec->reloc_count++
8592 * sizeof (Elf32_External_Rela));
8593 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
8594 }
8595
8596 /* Init the .got section contents if we're not
8597 emitting a reloc. */
8598 else
8599 {
8600 bfd_vma value = relocation;
8601
8602 if (tls_ty == (TLS_TLS | TLS_LD))
8603 value = 1;
8604 else if (tls_ty != 0)
8605 {
8606 if (htab->elf.tls_sec == NULL)
8607 value = 0;
8608 else
8609 {
8610 value -= htab->elf.tls_sec->vma + DTP_OFFSET;
8611 if (tls_ty == (TLS_TLS | TLS_TPREL))
8612 value += DTP_OFFSET - TP_OFFSET;
8613 }
8614
8615 if (tls_ty == (TLS_TLS | TLS_GD))
8616 {
8617 bfd_put_32 (output_bfd, value,
8618 htab->got->contents + off + 4);
8619 value = 1;
8620 }
8621 }
8622 bfd_put_32 (output_bfd, value,
8623 htab->got->contents + off);
8624 }
8625
8626 off += 4;
8627 if (tls_ty & (TLS_LD | TLS_GD))
8628 off += 4;
8629 }
8630 while (tls_m != 0);
8631
8632 off = *offp;
8633 *offp = off | 1;
8634 }
8635
8636 if (off >= (bfd_vma) -2)
8637 abort ();
8638
8639 if ((tls_type & TLS_TLS) != 0)
8640 {
8641 if (tls_type != (TLS_TLS | TLS_LD))
8642 {
8643 if ((tls_mask & TLS_LD) != 0
8644 && !(h == NULL
8645 || !h->def_dynamic))
8646 off += 8;
8647 if (tls_type != (TLS_TLS | TLS_GD))
8648 {
8649 if ((tls_mask & TLS_GD) != 0)
8650 off += 8;
8651 if (tls_type != (TLS_TLS | TLS_DTPREL))
8652 {
8653 if ((tls_mask & TLS_DTPREL) != 0)
8654 off += 4;
8655 }
8656 }
8657 }
8658 }
8659
8660 /* If here for a picfixup, we're done. */
8661 if (r_type != ELF32_R_TYPE (rel->r_info))
8662 goto copy_reloc;
8663
8664 relocation = (htab->got->output_section->vma
8665 + htab->got->output_offset
8666 + off
8667 - SYM_VAL (htab->elf.hgot));
8668
8669 /* Addends on got relocations don't make much sense.
8670 x+off@got is actually x@got+off, and since the got is
8671 generated by a hash table traversal, the value in the
8672 got at entry m+n bears little relation to the entry m. */
8673 if (addend != 0)
8674 info->callbacks->einfo
8675 (_("%P: %H: non-zero addend on %s reloc against `%s'\n"),
8676 input_bfd, input_section, rel->r_offset,
8677 howto->name,
8678 sym_name);
8679 }
8680 break;
8681
8682 /* Relocations that need no special processing. */
8683 case R_PPC_LOCAL24PC:
8684 /* It makes no sense to point a local relocation
8685 at a symbol not in this object. */
8686 if (unresolved_reloc)
8687 {
8688 (*info->callbacks->undefined_symbol) (info,
8689 h->root.root.string,
8690 input_bfd,
8691 input_section,
8692 rel->r_offset,
8693 TRUE);
8694 goto copy_reloc;
8695 }
8696 if (h != NULL && h->type == STT_GNU_IFUNC && bfd_link_pic (info))
8697 {
8698 /* @local on an ifunc does not really make sense since
8699 the ifunc resolver can take you anywhere. More
8700 seriously, calls to ifuncs must go through a plt call
8701 stub, and for pic the plt call stubs uses r30 to
8702 access the PLT. The problem is that a call that is
8703 local won't have the +32k reloc addend trick marking
8704 -fPIC code, so the linker won't know whether r30 is
8705 _GLOBAL_OFFSET_TABLE_ or pointing into a .got2 section. */
8706 info->callbacks->einfo (_("%X%P: %H: @local call to ifunc %s\n"),
8707 input_bfd, input_section, rel->r_offset,
8708 h->root.root.string);
8709 }
8710 break;
8711
8712 case R_PPC_DTPREL16:
8713 case R_PPC_DTPREL16_LO:
8714 case R_PPC_DTPREL16_HI:
8715 case R_PPC_DTPREL16_HA:
8716 if (htab->elf.tls_sec != NULL)
8717 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
8718 break;
8719
8720 /* Relocations that may need to be propagated if this is a shared
8721 object. */
8722 case R_PPC_TPREL16:
8723 case R_PPC_TPREL16_LO:
8724 case R_PPC_TPREL16_HI:
8725 case R_PPC_TPREL16_HA:
8726 if (h != NULL
8727 && h->root.type == bfd_link_hash_undefweak
8728 && h->dynindx == -1)
8729 {
8730 /* Make this relocation against an undefined weak symbol
8731 resolve to zero. This is really just a tweak, since
8732 code using weak externs ought to check that they are
8733 defined before using them. */
8734 bfd_byte *p = contents + rel->r_offset - d_offset;
8735 unsigned int insn = bfd_get_32 (output_bfd, p);
8736 insn = _bfd_elf_ppc_at_tprel_transform (insn, 2);
8737 if (insn != 0)
8738 bfd_put_32 (output_bfd, insn, p);
8739 break;
8740 }
8741 if (htab->elf.tls_sec != NULL)
8742 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
8743 /* The TPREL16 relocs shouldn't really be used in shared
8744 libs as they will result in DT_TEXTREL being set, but
8745 support them anyway. */
8746 goto dodyn;
8747
8748 case R_PPC_TPREL32:
8749 if (htab->elf.tls_sec != NULL)
8750 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
8751 goto dodyn;
8752
8753 case R_PPC_DTPREL32:
8754 if (htab->elf.tls_sec != NULL)
8755 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
8756 goto dodyn;
8757
8758 case R_PPC_DTPMOD32:
8759 relocation = 1;
8760 addend = 0;
8761 goto dodyn;
8762
8763 case R_PPC_REL16:
8764 case R_PPC_REL16_LO:
8765 case R_PPC_REL16_HI:
8766 case R_PPC_REL16_HA:
8767 case R_PPC_REL16DX_HA:
8768 break;
8769
8770 case R_PPC_REL32:
8771 if (h == NULL || h == htab->elf.hgot)
8772 break;
8773 /* fall through */
8774
8775 case R_PPC_ADDR32:
8776 case R_PPC_ADDR16:
8777 case R_PPC_ADDR16_LO:
8778 case R_PPC_ADDR16_HI:
8779 case R_PPC_ADDR16_HA:
8780 case R_PPC_UADDR32:
8781 case R_PPC_UADDR16:
8782 goto dodyn;
8783
8784 case R_PPC_VLE_REL8:
8785 case R_PPC_VLE_REL15:
8786 case R_PPC_VLE_REL24:
8787 case R_PPC_REL24:
8788 case R_PPC_REL14:
8789 case R_PPC_REL14_BRTAKEN:
8790 case R_PPC_REL14_BRNTAKEN:
8791 /* If these relocations are not to a named symbol, they can be
8792 handled right here, no need to bother the dynamic linker. */
8793 if (SYMBOL_CALLS_LOCAL (info, h)
8794 || h == htab->elf.hgot)
8795 break;
8796 /* fall through */
8797
8798 case R_PPC_ADDR24:
8799 case R_PPC_ADDR14:
8800 case R_PPC_ADDR14_BRTAKEN:
8801 case R_PPC_ADDR14_BRNTAKEN:
8802 if (h != NULL && !bfd_link_pic (info))
8803 break;
8804 /* fall through */
8805
8806 dodyn:
8807 if ((input_section->flags & SEC_ALLOC) == 0
8808 || is_vxworks_tls)
8809 break;
8810
8811 if ((bfd_link_pic (info)
8812 && !(h != NULL
8813 && ((h->root.type == bfd_link_hash_undefined
8814 && (ELF_ST_VISIBILITY (h->other) == STV_HIDDEN
8815 || ELF_ST_VISIBILITY (h->other) == STV_INTERNAL))
8816 || (h->root.type == bfd_link_hash_undefweak
8817 && ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)))
8818 && (must_be_dyn_reloc (info, r_type)
8819 || !SYMBOL_CALLS_LOCAL (info, h)))
8820 || (ELIMINATE_COPY_RELOCS
8821 && !bfd_link_pic (info)
8822 && h != NULL
8823 && h->dynindx != -1
8824 && !h->non_got_ref
8825 && !h->def_regular
8826 && !(h->protected_def
8827 && ppc_elf_hash_entry (h)->has_addr16_ha
8828 && ppc_elf_hash_entry (h)->has_addr16_lo
8829 && htab->params->pic_fixup > 0)))
8830 {
8831 int skip;
8832 bfd_byte *loc;
8833 asection *sreloc;
8834 #ifdef DEBUG
8835 fprintf (stderr, "ppc_elf_relocate_section needs to "
8836 "create relocation for %s\n",
8837 (h && h->root.root.string
8838 ? h->root.root.string : "<unknown>"));
8839 #endif
8840
8841 /* When generating a shared object, these relocations
8842 are copied into the output file to be resolved at run
8843 time. */
8844 sreloc = elf_section_data (input_section)->sreloc;
8845 if (ifunc)
8846 sreloc = htab->reliplt;
8847 if (sreloc == NULL)
8848 return FALSE;
8849
8850 skip = 0;
8851 outrel.r_offset = _bfd_elf_section_offset (output_bfd, info,
8852 input_section,
8853 rel->r_offset);
8854 if (outrel.r_offset == (bfd_vma) -1
8855 || outrel.r_offset == (bfd_vma) -2)
8856 skip = (int) outrel.r_offset;
8857 outrel.r_offset += (input_section->output_section->vma
8858 + input_section->output_offset);
8859
8860 if (skip)
8861 memset (&outrel, 0, sizeof outrel);
8862 else if ((h != NULL
8863 && (h->root.type == bfd_link_hash_undefined
8864 || h->root.type == bfd_link_hash_undefweak))
8865 || !SYMBOL_REFERENCES_LOCAL (info, h))
8866 {
8867 BFD_ASSERT (h->dynindx != -1);
8868 unresolved_reloc = FALSE;
8869 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
8870 outrel.r_addend = rel->r_addend;
8871 }
8872 else
8873 {
8874 outrel.r_addend = relocation + rel->r_addend;
8875
8876 if (r_type != R_PPC_ADDR32)
8877 {
8878 long indx = 0;
8879
8880 if (ifunc != NULL)
8881 {
8882 /* If we get here when building a static
8883 executable, then the libc startup function
8884 responsible for applying indirect function
8885 relocations is going to complain about
8886 the reloc type.
8887 If we get here when building a dynamic
8888 executable, it will be because we have
8889 a text relocation. The dynamic loader
8890 will set the text segment writable and
8891 non-executable to apply text relocations.
8892 So we'll segfault when trying to run the
8893 indirection function to resolve the reloc. */
8894 info->callbacks->einfo
8895 (_("%P: %H: relocation %s for indirect "
8896 "function %s unsupported\n"),
8897 input_bfd, input_section, rel->r_offset,
8898 howto->name,
8899 sym_name);
8900 ret = FALSE;
8901 }
8902 else if (r_symndx == STN_UNDEF || bfd_is_abs_section (sec))
8903 ;
8904 else if (sec == NULL || sec->owner == NULL)
8905 {
8906 bfd_set_error (bfd_error_bad_value);
8907 ret = FALSE;
8908 }
8909 else
8910 {
8911 asection *osec;
8912
8913 /* We are turning this relocation into one
8914 against a section symbol. It would be
8915 proper to subtract the symbol's value,
8916 osec->vma, from the emitted reloc addend,
8917 but ld.so expects buggy relocs.
8918 FIXME: Why not always use a zero index? */
8919 osec = sec->output_section;
8920 indx = elf_section_data (osec)->dynindx;
8921 if (indx == 0)
8922 {
8923 osec = htab->elf.text_index_section;
8924 indx = elf_section_data (osec)->dynindx;
8925 }
8926 BFD_ASSERT (indx != 0);
8927 #ifdef DEBUG
8928 if (indx == 0)
8929 printf ("indx=%ld section=%s flags=%08x name=%s\n",
8930 indx, osec->name, osec->flags,
8931 h->root.root.string);
8932 #endif
8933 }
8934
8935 outrel.r_info = ELF32_R_INFO (indx, r_type);
8936 }
8937 else if (ifunc != NULL)
8938 outrel.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
8939 else
8940 outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
8941 }
8942
8943 loc = sreloc->contents;
8944 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
8945 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
8946
8947 if (skip == -1)
8948 goto copy_reloc;
8949
8950 /* This reloc will be computed at runtime. We clear the memory
8951 so that it contains predictable value. */
8952 if (! skip
8953 && ((input_section->flags & SEC_ALLOC) != 0
8954 || ELF32_R_TYPE (outrel.r_info) != R_PPC_RELATIVE))
8955 {
8956 relocation = howto->pc_relative ? outrel.r_offset : 0;
8957 addend = 0;
8958 break;
8959 }
8960 }
8961 break;
8962
8963 case R_PPC_RELAX_PLT:
8964 case R_PPC_RELAX_PLTREL24:
8965 if (h != NULL)
8966 {
8967 struct plt_entry *ent;
8968 bfd_vma got2_addend = 0;
8969
8970 if (r_type == R_PPC_RELAX_PLTREL24)
8971 {
8972 if (bfd_link_pic (info))
8973 got2_addend = addend;
8974 addend = 0;
8975 }
8976 ent = find_plt_ent (&h->plt.plist, got2, got2_addend);
8977 if (htab->plt_type == PLT_NEW)
8978 relocation = (htab->glink->output_section->vma
8979 + htab->glink->output_offset
8980 + ent->glink_offset);
8981 else
8982 relocation = (htab->plt->output_section->vma
8983 + htab->plt->output_offset
8984 + ent->plt.offset);
8985 }
8986 /* Fall through. */
8987
8988 case R_PPC_RELAX:
8989 {
8990 const int *stub;
8991 size_t size;
8992 size_t insn_offset = rel->r_offset;
8993 unsigned int insn;
8994
8995 if (bfd_link_pic (info))
8996 {
8997 relocation -= (input_section->output_section->vma
8998 + input_section->output_offset
8999 + rel->r_offset - 4);
9000 stub = shared_stub_entry;
9001 bfd_put_32 (output_bfd, stub[0], contents + insn_offset - 12);
9002 bfd_put_32 (output_bfd, stub[1], contents + insn_offset - 8);
9003 bfd_put_32 (output_bfd, stub[2], contents + insn_offset - 4);
9004 stub += 3;
9005 size = ARRAY_SIZE (shared_stub_entry) - 3;
9006 }
9007 else
9008 {
9009 stub = stub_entry;
9010 size = ARRAY_SIZE (stub_entry);
9011 }
9012
9013 relocation += addend;
9014 if (bfd_link_relocatable (info))
9015 relocation = 0;
9016
9017 /* First insn is HA, second is LO. */
9018 insn = *stub++;
9019 insn |= ((relocation + 0x8000) >> 16) & 0xffff;
9020 bfd_put_32 (output_bfd, insn, contents + insn_offset);
9021 insn_offset += 4;
9022
9023 insn = *stub++;
9024 insn |= relocation & 0xffff;
9025 bfd_put_32 (output_bfd, insn, contents + insn_offset);
9026 insn_offset += 4;
9027 size -= 2;
9028
9029 while (size != 0)
9030 {
9031 insn = *stub++;
9032 --size;
9033 bfd_put_32 (output_bfd, insn, contents + insn_offset);
9034 insn_offset += 4;
9035 }
9036
9037 /* Rewrite the reloc and convert one of the trailing nop
9038 relocs to describe this relocation. */
9039 BFD_ASSERT (ELF32_R_TYPE (relend[-1].r_info) == R_PPC_NONE);
9040 /* The relocs are at the bottom 2 bytes */
9041 wrel->r_offset = rel->r_offset + d_offset;
9042 wrel->r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_HA);
9043 wrel->r_addend = rel->r_addend;
9044 memmove (wrel + 1, wrel, (relend - wrel - 1) * sizeof (*wrel));
9045 wrel++, rel++;
9046 wrel->r_offset += 4;
9047 wrel->r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_LO);
9048 }
9049 continue;
9050
9051 /* Indirect .sdata relocation. */
9052 case R_PPC_EMB_SDAI16:
9053 BFD_ASSERT (htab->sdata[0].section != NULL);
9054 if (!is_static_defined (htab->sdata[0].sym))
9055 {
9056 unresolved_reloc = TRUE;
9057 break;
9058 }
9059 relocation
9060 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[0],
9061 h, relocation, rel);
9062 addend = 0;
9063 break;
9064
9065 /* Indirect .sdata2 relocation. */
9066 case R_PPC_EMB_SDA2I16:
9067 BFD_ASSERT (htab->sdata[1].section != NULL);
9068 if (!is_static_defined (htab->sdata[1].sym))
9069 {
9070 unresolved_reloc = TRUE;
9071 break;
9072 }
9073 relocation
9074 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[1],
9075 h, relocation, rel);
9076 addend = 0;
9077 break;
9078
9079 /* Handle the TOC16 reloc. We want to use the offset within the .got
9080 section, not the actual VMA. This is appropriate when generating
9081 an embedded ELF object, for which the .got section acts like the
9082 AIX .toc section. */
9083 case R_PPC_TOC16: /* phony GOT16 relocations */
9084 if (sec == NULL || sec->output_section == NULL)
9085 {
9086 unresolved_reloc = TRUE;
9087 break;
9088 }
9089 BFD_ASSERT (strcmp (bfd_get_section_name (sec->owner, sec),
9090 ".got") == 0
9091 || strcmp (bfd_get_section_name (sec->owner, sec),
9092 ".cgot") == 0);
9093
9094 addend -= sec->output_section->vma + sec->output_offset + 0x8000;
9095 break;
9096
9097 case R_PPC_PLTREL24:
9098 if (h != NULL && ifunc == NULL)
9099 {
9100 struct plt_entry *ent;
9101
9102 ent = find_plt_ent (&h->plt.plist, got2,
9103 bfd_link_pic (info) ? addend : 0);
9104 if (ent == NULL
9105 || htab->plt == NULL)
9106 {
9107 /* We didn't make a PLT entry for this symbol. This
9108 happens when statically linking PIC code, or when
9109 using -Bsymbolic. */
9110 }
9111 else
9112 {
9113 /* Relocation is to the entry for this symbol in the
9114 procedure linkage table. */
9115 unresolved_reloc = FALSE;
9116 if (htab->plt_type == PLT_NEW)
9117 relocation = (htab->glink->output_section->vma
9118 + htab->glink->output_offset
9119 + ent->glink_offset);
9120 else
9121 relocation = (htab->plt->output_section->vma
9122 + htab->plt->output_offset
9123 + ent->plt.offset);
9124 }
9125 }
9126
9127 /* R_PPC_PLTREL24 is rather special. If non-zero, the
9128 addend specifies the GOT pointer offset within .got2.
9129 Don't apply it to the relocation field. */
9130 addend = 0;
9131 break;
9132
9133 /* Relocate against _SDA_BASE_. */
9134 case R_PPC_SDAREL16:
9135 {
9136 const char *name;
9137 struct elf_link_hash_entry *sda = htab->sdata[0].sym;
9138
9139 if (sec == NULL
9140 || sec->output_section == NULL
9141 || !is_static_defined (sda))
9142 {
9143 unresolved_reloc = TRUE;
9144 break;
9145 }
9146 addend -= SYM_VAL (sda);
9147
9148 name = bfd_get_section_name (output_bfd, sec->output_section);
9149 if (!(strcmp (name, ".sdata") == 0
9150 || strcmp (name, ".sbss") == 0))
9151 {
9152 info->callbacks->einfo
9153 (_("%P: %B: the target (%s) of a %s relocation is "
9154 "in the wrong output section (%s)\n"),
9155 input_bfd,
9156 sym_name,
9157 howto->name,
9158 name);
9159 }
9160 }
9161 break;
9162
9163 /* Relocate against _SDA2_BASE_. */
9164 case R_PPC_EMB_SDA2REL:
9165 {
9166 const char *name;
9167 struct elf_link_hash_entry *sda = htab->sdata[1].sym;
9168
9169 if (sec == NULL
9170 || sec->output_section == NULL
9171 || !is_static_defined (sda))
9172 {
9173 unresolved_reloc = TRUE;
9174 break;
9175 }
9176 addend -= SYM_VAL (sda);
9177
9178 name = bfd_get_section_name (output_bfd, sec->output_section);
9179 if (!(strcmp (name, ".sdata2") == 0
9180 || strcmp (name, ".sbss2") == 0))
9181 {
9182 info->callbacks->einfo
9183 (_("%P: %B: the target (%s) of a %s relocation is "
9184 "in the wrong output section (%s)\n"),
9185 input_bfd,
9186 sym_name,
9187 howto->name,
9188 name);
9189 }
9190 }
9191 break;
9192
9193 case R_PPC_VLE_LO16A:
9194 relocation = relocation + addend;
9195 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9196 relocation, split16a_type);
9197 goto copy_reloc;
9198
9199 case R_PPC_VLE_LO16D:
9200 relocation = relocation + addend;
9201 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9202 relocation, split16d_type);
9203 goto copy_reloc;
9204
9205 case R_PPC_VLE_HI16A:
9206 relocation = (relocation + addend) >> 16;
9207 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9208 relocation, split16a_type);
9209 goto copy_reloc;
9210
9211 case R_PPC_VLE_HI16D:
9212 relocation = (relocation + addend) >> 16;
9213 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9214 relocation, split16d_type);
9215 goto copy_reloc;
9216
9217 case R_PPC_VLE_HA16A:
9218 relocation = (relocation + addend + 0x8000) >> 16;
9219 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9220 relocation, split16a_type);
9221 goto copy_reloc;
9222
9223 case R_PPC_VLE_HA16D:
9224 relocation = (relocation + addend + 0x8000) >> 16;
9225 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9226 relocation, split16d_type);
9227 goto copy_reloc;
9228
9229 /* Relocate against either _SDA_BASE_, _SDA2_BASE_, or 0. */
9230 case R_PPC_EMB_SDA21:
9231 case R_PPC_VLE_SDA21:
9232 case R_PPC_EMB_RELSDA:
9233 case R_PPC_VLE_SDA21_LO:
9234 {
9235 const char *name;
9236 int reg;
9237 unsigned int insn;
9238 struct elf_link_hash_entry *sda = NULL;
9239
9240 if (sec == NULL || sec->output_section == NULL)
9241 {
9242 unresolved_reloc = TRUE;
9243 break;
9244 }
9245
9246 name = bfd_get_section_name (output_bfd, sec->output_section);
9247 if (strcmp (name, ".sdata") == 0
9248 || strcmp (name, ".sbss") == 0)
9249 {
9250 reg = 13;
9251 sda = htab->sdata[0].sym;
9252 }
9253 else if (strcmp (name, ".sdata2") == 0
9254 || strcmp (name, ".sbss2") == 0)
9255 {
9256 reg = 2;
9257 sda = htab->sdata[1].sym;
9258 }
9259 else if (strcmp (name, ".PPC.EMB.sdata0") == 0
9260 || strcmp (name, ".PPC.EMB.sbss0") == 0)
9261 {
9262 reg = 0;
9263 }
9264 else
9265 {
9266 info->callbacks->einfo
9267 (_("%P: %B: the target (%s) of a %s relocation is "
9268 "in the wrong output section (%s)\n"),
9269 input_bfd,
9270 sym_name,
9271 howto->name,
9272 name);
9273
9274 bfd_set_error (bfd_error_bad_value);
9275 ret = FALSE;
9276 goto copy_reloc;
9277 }
9278
9279 if (sda != NULL)
9280 {
9281 if (!is_static_defined (sda))
9282 {
9283 unresolved_reloc = TRUE;
9284 break;
9285 }
9286 addend -= SYM_VAL (sda);
9287 }
9288
9289 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
9290 if (reg == 0
9291 && (r_type == R_PPC_VLE_SDA21
9292 || r_type == R_PPC_VLE_SDA21_LO))
9293 {
9294 relocation = relocation + addend;
9295 addend = 0;
9296
9297 /* Force e_li insn, keeping RT from original insn. */
9298 insn &= 0x1f << 21;
9299 insn |= 28u << 26;
9300
9301 /* We have an li20 field, bits 17..20, 11..15, 21..31. */
9302 /* Top 4 bits of value to 17..20. */
9303 insn |= (relocation & 0xf0000) >> 5;
9304 /* Next 5 bits of the value to 11..15. */
9305 insn |= (relocation & 0xf800) << 5;
9306 /* And the final 11 bits of the value to bits 21 to 31. */
9307 insn |= relocation & 0x7ff;
9308
9309 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
9310
9311 if (r_type == R_PPC_VLE_SDA21
9312 && ((relocation + 0x80000) & 0xffffffff) > 0x100000)
9313 goto overflow;
9314 goto copy_reloc;
9315 }
9316 else if (r_type == R_PPC_EMB_SDA21
9317 || r_type == R_PPC_VLE_SDA21
9318 || r_type == R_PPC_VLE_SDA21_LO)
9319 {
9320 /* Fill in register field. */
9321 insn = (insn & ~RA_REGISTER_MASK) | (reg << RA_REGISTER_SHIFT);
9322 }
9323 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
9324 }
9325 break;
9326
9327 case R_PPC_VLE_SDAREL_LO16A:
9328 case R_PPC_VLE_SDAREL_LO16D:
9329 case R_PPC_VLE_SDAREL_HI16A:
9330 case R_PPC_VLE_SDAREL_HI16D:
9331 case R_PPC_VLE_SDAREL_HA16A:
9332 case R_PPC_VLE_SDAREL_HA16D:
9333 {
9334 bfd_vma value;
9335 const char *name;
9336 //int reg;
9337 struct elf_link_hash_entry *sda = NULL;
9338
9339 if (sec == NULL || sec->output_section == NULL)
9340 {
9341 unresolved_reloc = TRUE;
9342 break;
9343 }
9344
9345 name = bfd_get_section_name (output_bfd, sec->output_section);
9346 if (strcmp (name, ".sdata") == 0
9347 || strcmp (name, ".sbss") == 0)
9348 {
9349 //reg = 13;
9350 sda = htab->sdata[0].sym;
9351 }
9352 else if (strcmp (name, ".sdata2") == 0
9353 || strcmp (name, ".sbss2") == 0)
9354 {
9355 //reg = 2;
9356 sda = htab->sdata[1].sym;
9357 }
9358 else
9359 {
9360 _bfd_error_handler
9361 (_("%B: the target (%s) of a %s relocation is "
9362 "in the wrong output section (%s)"),
9363 input_bfd,
9364 sym_name,
9365 howto->name,
9366 name);
9367
9368 bfd_set_error (bfd_error_bad_value);
9369 ret = FALSE;
9370 goto copy_reloc;
9371 }
9372
9373 if (sda != NULL)
9374 {
9375 if (!is_static_defined (sda))
9376 {
9377 unresolved_reloc = TRUE;
9378 break;
9379 }
9380 }
9381
9382 value = (sda->root.u.def.section->output_section->vma
9383 + sda->root.u.def.section->output_offset
9384 + addend);
9385
9386 if (r_type == R_PPC_VLE_SDAREL_LO16A)
9387 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9388 value, split16a_type);
9389 else if (r_type == R_PPC_VLE_SDAREL_LO16D)
9390 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9391 value, split16d_type);
9392 else if (r_type == R_PPC_VLE_SDAREL_HI16A)
9393 {
9394 value = value >> 16;
9395 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9396 value, split16a_type);
9397 }
9398 else if (r_type == R_PPC_VLE_SDAREL_HI16D)
9399 {
9400 value = value >> 16;
9401 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9402 value, split16d_type);
9403 }
9404 else if (r_type == R_PPC_VLE_SDAREL_HA16A)
9405 {
9406 value = (value + 0x8000) >> 16;
9407 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9408 value, split16a_type);
9409 }
9410 else if (r_type == R_PPC_VLE_SDAREL_HA16D)
9411 {
9412 value = (value + 0x8000) >> 16;
9413 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9414 value, split16d_type);
9415 }
9416 }
9417 goto copy_reloc;
9418
9419 /* Relocate against the beginning of the section. */
9420 case R_PPC_SECTOFF:
9421 case R_PPC_SECTOFF_LO:
9422 case R_PPC_SECTOFF_HI:
9423 case R_PPC_SECTOFF_HA:
9424 if (sec == NULL || sec->output_section == NULL)
9425 {
9426 unresolved_reloc = TRUE;
9427 break;
9428 }
9429 addend -= sec->output_section->vma;
9430 break;
9431
9432 /* Negative relocations. */
9433 case R_PPC_EMB_NADDR32:
9434 case R_PPC_EMB_NADDR16:
9435 case R_PPC_EMB_NADDR16_LO:
9436 case R_PPC_EMB_NADDR16_HI:
9437 case R_PPC_EMB_NADDR16_HA:
9438 addend -= 2 * relocation;
9439 break;
9440
9441 case R_PPC_COPY:
9442 case R_PPC_GLOB_DAT:
9443 case R_PPC_JMP_SLOT:
9444 case R_PPC_RELATIVE:
9445 case R_PPC_IRELATIVE:
9446 case R_PPC_PLT32:
9447 case R_PPC_PLTREL32:
9448 case R_PPC_PLT16_LO:
9449 case R_PPC_PLT16_HI:
9450 case R_PPC_PLT16_HA:
9451 case R_PPC_ADDR30:
9452 case R_PPC_EMB_RELSEC16:
9453 case R_PPC_EMB_RELST_LO:
9454 case R_PPC_EMB_RELST_HI:
9455 case R_PPC_EMB_RELST_HA:
9456 case R_PPC_EMB_BIT_FLD:
9457 info->callbacks->einfo
9458 (_("%P: %B: relocation %s is not yet supported for symbol %s\n"),
9459 input_bfd,
9460 howto->name,
9461 sym_name);
9462
9463 bfd_set_error (bfd_error_invalid_operation);
9464 ret = FALSE;
9465 goto copy_reloc;
9466 }
9467
9468 /* Do any further special processing. */
9469 switch (r_type)
9470 {
9471 default:
9472 break;
9473
9474 case R_PPC_ADDR16_HA:
9475 case R_PPC_REL16_HA:
9476 case R_PPC_REL16DX_HA:
9477 case R_PPC_SECTOFF_HA:
9478 case R_PPC_TPREL16_HA:
9479 case R_PPC_DTPREL16_HA:
9480 case R_PPC_EMB_NADDR16_HA:
9481 case R_PPC_EMB_RELST_HA:
9482 /* It's just possible that this symbol is a weak symbol
9483 that's not actually defined anywhere. In that case,
9484 'sec' would be NULL, and we should leave the symbol
9485 alone (it will be set to zero elsewhere in the link). */
9486 if (sec == NULL)
9487 break;
9488 /* Fall through. */
9489
9490 case R_PPC_PLT16_HA:
9491 case R_PPC_GOT16_HA:
9492 case R_PPC_GOT_TLSGD16_HA:
9493 case R_PPC_GOT_TLSLD16_HA:
9494 case R_PPC_GOT_TPREL16_HA:
9495 case R_PPC_GOT_DTPREL16_HA:
9496 /* Add 0x10000 if sign bit in 0:15 is set.
9497 Bits 0:15 are not used. */
9498 addend += 0x8000;
9499 break;
9500
9501 case R_PPC_ADDR16:
9502 case R_PPC_ADDR16_LO:
9503 case R_PPC_GOT16:
9504 case R_PPC_GOT16_LO:
9505 case R_PPC_SDAREL16:
9506 case R_PPC_SECTOFF:
9507 case R_PPC_SECTOFF_LO:
9508 case R_PPC_DTPREL16:
9509 case R_PPC_DTPREL16_LO:
9510 case R_PPC_TPREL16:
9511 case R_PPC_TPREL16_LO:
9512 case R_PPC_GOT_TLSGD16:
9513 case R_PPC_GOT_TLSGD16_LO:
9514 case R_PPC_GOT_TLSLD16:
9515 case R_PPC_GOT_TLSLD16_LO:
9516 case R_PPC_GOT_DTPREL16:
9517 case R_PPC_GOT_DTPREL16_LO:
9518 case R_PPC_GOT_TPREL16:
9519 case R_PPC_GOT_TPREL16_LO:
9520 {
9521 /* The 32-bit ABI lacks proper relocations to deal with
9522 certain 64-bit instructions. Prevent damage to bits
9523 that make up part of the insn opcode. */
9524 unsigned int insn, mask, lobit;
9525
9526 insn = bfd_get_32 (output_bfd,
9527 contents + rel->r_offset - d_offset);
9528 mask = 0;
9529 if (is_insn_ds_form (insn))
9530 mask = 3;
9531 else if (is_insn_dq_form (insn))
9532 mask = 15;
9533 else
9534 break;
9535 relocation += addend;
9536 addend = insn & mask;
9537 lobit = mask & relocation;
9538 if (lobit != 0)
9539 {
9540 relocation ^= lobit;
9541 info->callbacks->einfo
9542 (_("%P: %H: error: %s against `%s' not a multiple of %u\n"),
9543 input_bfd, input_section, rel->r_offset,
9544 howto->name, sym_name, mask + 1);
9545 bfd_set_error (bfd_error_bad_value);
9546 ret = FALSE;
9547 }
9548 }
9549 break;
9550 }
9551
9552 #ifdef DEBUG
9553 fprintf (stderr, "\ttype = %s (%d), name = %s, symbol index = %ld, "
9554 "offset = %ld, addend = %ld\n",
9555 howto->name,
9556 (int) r_type,
9557 sym_name,
9558 r_symndx,
9559 (long) rel->r_offset,
9560 (long) addend);
9561 #endif
9562
9563 if (unresolved_reloc
9564 && !((input_section->flags & SEC_DEBUGGING) != 0
9565 && h->def_dynamic)
9566 && _bfd_elf_section_offset (output_bfd, info, input_section,
9567 rel->r_offset) != (bfd_vma) -1)
9568 {
9569 info->callbacks->einfo
9570 (_("%P: %H: unresolvable %s relocation against symbol `%s'\n"),
9571 input_bfd, input_section, rel->r_offset,
9572 howto->name,
9573 sym_name);
9574 ret = FALSE;
9575 }
9576
9577 /* 16-bit fields in insns mostly have signed values, but a
9578 few insns have 16-bit unsigned values. Really, we should
9579 have different reloc types. */
9580 if (howto->complain_on_overflow != complain_overflow_dont
9581 && howto->dst_mask == 0xffff
9582 && (input_section->flags & SEC_CODE) != 0)
9583 {
9584 enum complain_overflow complain = complain_overflow_signed;
9585
9586 if ((elf_section_flags (input_section) & SHF_PPC_VLE) == 0)
9587 {
9588 unsigned int insn;
9589
9590 insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
9591 if ((insn & (0x3f << 26)) == 10u << 26 /* cmpli */)
9592 complain = complain_overflow_bitfield;
9593 else if ((insn & (0x3f << 26)) == 28u << 26 /* andi */
9594 || (insn & (0x3f << 26)) == 24u << 26 /* ori */
9595 || (insn & (0x3f << 26)) == 26u << 26 /* xori */)
9596 complain = complain_overflow_unsigned;
9597 }
9598 if (howto->complain_on_overflow != complain)
9599 {
9600 alt_howto = *howto;
9601 alt_howto.complain_on_overflow = complain;
9602 howto = &alt_howto;
9603 }
9604 }
9605
9606 if (r_type == R_PPC_REL16DX_HA)
9607 {
9608 /* Split field reloc isn't handled by _bfd_final_link_relocate. */
9609 if (rel->r_offset + 4 > input_section->size)
9610 r = bfd_reloc_outofrange;
9611 else
9612 {
9613 unsigned int insn;
9614
9615 relocation += addend;
9616 relocation -= (rel->r_offset
9617 + input_section->output_offset
9618 + input_section->output_section->vma);
9619 relocation >>= 16;
9620 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
9621 insn &= ~0x1fffc1;
9622 insn |= (relocation & 0xffc1) | ((relocation & 0x3e) << 15);
9623 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
9624 r = bfd_reloc_ok;
9625 }
9626 }
9627 else
9628 r = _bfd_final_link_relocate (howto, input_bfd, input_section, contents,
9629 rel->r_offset, relocation, addend);
9630
9631 if (r != bfd_reloc_ok)
9632 {
9633 if (r == bfd_reloc_overflow)
9634 {
9635 overflow:
9636 /* On code like "if (foo) foo();" don't report overflow
9637 on a branch to zero when foo is undefined. */
9638 if (!warned
9639 && !(h != NULL
9640 && (h->root.type == bfd_link_hash_undefweak
9641 || h->root.type == bfd_link_hash_undefined)
9642 && is_branch_reloc (r_type)))
9643 info->callbacks->reloc_overflow
9644 (info, (h ? &h->root : NULL), sym_name, howto->name,
9645 rel->r_addend, input_bfd, input_section, rel->r_offset);
9646 }
9647 else
9648 {
9649 info->callbacks->einfo
9650 (_("%P: %H: %s reloc against `%s': error %d\n"),
9651 input_bfd, input_section, rel->r_offset,
9652 howto->name, sym_name, (int) r);
9653 ret = FALSE;
9654 }
9655 }
9656 copy_reloc:
9657 if (wrel != rel)
9658 *wrel = *rel;
9659 }
9660
9661 if (wrel != rel)
9662 {
9663 Elf_Internal_Shdr *rel_hdr;
9664 size_t deleted = rel - wrel;
9665
9666 rel_hdr = _bfd_elf_single_rel_hdr (input_section->output_section);
9667 rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted;
9668 if (rel_hdr->sh_size == 0)
9669 {
9670 /* It is too late to remove an empty reloc section. Leave
9671 one NONE reloc.
9672 ??? What is wrong with an empty section??? */
9673 rel_hdr->sh_size = rel_hdr->sh_entsize;
9674 deleted -= 1;
9675 wrel++;
9676 }
9677 relend = wrel;
9678 rel_hdr = _bfd_elf_single_rel_hdr (input_section);
9679 rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted;
9680 input_section->reloc_count -= deleted;
9681 }
9682
9683 #ifdef DEBUG
9684 fprintf (stderr, "\n");
9685 #endif
9686
9687 if (input_section->sec_info_type == SEC_INFO_TYPE_TARGET
9688 && input_section->size != input_section->rawsize
9689 && (strcmp (input_section->output_section->name, ".init") == 0
9690 || strcmp (input_section->output_section->name, ".fini") == 0))
9691 {
9692 /* Branch around the trampolines. */
9693 unsigned int insn = B + input_section->size - input_section->rawsize;
9694 bfd_put_32 (input_bfd, insn, contents + input_section->rawsize);
9695 }
9696
9697 if (htab->params->ppc476_workaround
9698 && input_section->sec_info_type == SEC_INFO_TYPE_TARGET
9699 && (!bfd_link_relocatable (info)
9700 || (input_section->output_section->alignment_power
9701 >= htab->params->pagesize_p2)))
9702 {
9703 bfd_vma start_addr, end_addr, addr;
9704 bfd_vma pagesize = (bfd_vma) 1 << htab->params->pagesize_p2;
9705
9706 if (relax_info->workaround_size != 0)
9707 {
9708 bfd_byte *p;
9709 unsigned int n;
9710 bfd_byte fill[4];
9711
9712 bfd_put_32 (input_bfd, BA, fill);
9713 p = contents + input_section->size - relax_info->workaround_size;
9714 n = relax_info->workaround_size >> 2;
9715 while (n--)
9716 {
9717 memcpy (p, fill, 4);
9718 p += 4;
9719 }
9720 }
9721
9722 /* The idea is: Replace the last instruction on a page with a
9723 branch to a patch area. Put the insn there followed by a
9724 branch back to the next page. Complicated a little by
9725 needing to handle moved conditional branches, and by not
9726 wanting to touch data-in-text. */
9727
9728 start_addr = (input_section->output_section->vma
9729 + input_section->output_offset);
9730 end_addr = (start_addr + input_section->size
9731 - relax_info->workaround_size);
9732 for (addr = ((start_addr & -pagesize) + pagesize - 4);
9733 addr < end_addr;
9734 addr += pagesize)
9735 {
9736 bfd_vma offset = addr - start_addr;
9737 Elf_Internal_Rela *lo, *hi;
9738 bfd_boolean is_data;
9739 bfd_vma patch_off, patch_addr;
9740 unsigned int insn;
9741
9742 /* Do we have a data reloc at this offset? If so, leave
9743 the word alone. */
9744 is_data = FALSE;
9745 lo = relocs;
9746 hi = relend;
9747 rel = NULL;
9748 while (lo < hi)
9749 {
9750 rel = lo + (hi - lo) / 2;
9751 if (rel->r_offset < offset)
9752 lo = rel + 1;
9753 else if (rel->r_offset > offset + 3)
9754 hi = rel;
9755 else
9756 {
9757 switch (ELF32_R_TYPE (rel->r_info))
9758 {
9759 case R_PPC_ADDR32:
9760 case R_PPC_UADDR32:
9761 case R_PPC_REL32:
9762 case R_PPC_ADDR30:
9763 is_data = TRUE;
9764 break;
9765 default:
9766 break;
9767 }
9768 break;
9769 }
9770 }
9771 if (is_data)
9772 continue;
9773
9774 /* Some instructions can be left alone too. Unconditional
9775 branches, except for bcctr with BO=0x14 (bctr, bctrl),
9776 avoid the icache failure.
9777
9778 The problem occurs due to prefetch across a page boundary
9779 where stale instructions can be fetched from the next
9780 page, and the mechanism for flushing these bad
9781 instructions fails under certain circumstances. The
9782 unconditional branches:
9783 1) Branch: b, bl, ba, bla,
9784 2) Branch Conditional: bc, bca, bcl, bcla,
9785 3) Branch Conditional to Link Register: bclr, bclrl,
9786 where (2) and (3) have BO=0x14 making them unconditional,
9787 prevent the bad prefetch because the prefetch itself is
9788 affected by these instructions. This happens even if the
9789 instruction is not executed.
9790
9791 A bctr example:
9792 .
9793 . lis 9,new_page@ha
9794 . addi 9,9,new_page@l
9795 . mtctr 9
9796 . bctr
9797 . nop
9798 . nop
9799 . new_page:
9800 .
9801 The bctr is not predicted taken due to ctr not being
9802 ready, so prefetch continues on past the bctr into the
9803 new page which might have stale instructions. If they
9804 fail to be flushed, then they will be executed after the
9805 bctr executes. Either of the following modifications
9806 prevent the bad prefetch from happening in the first
9807 place:
9808 .
9809 . lis 9,new_page@ha lis 9,new_page@ha
9810 . addi 9,9,new_page@l addi 9,9,new_page@l
9811 . mtctr 9 mtctr 9
9812 . bctr bctr
9813 . nop b somewhere_else
9814 . b somewhere_else nop
9815 . new_page: new_page:
9816 . */
9817 insn = bfd_get_32 (input_bfd, contents + offset);
9818 if ((insn & (0x3f << 26)) == (18u << 26) /* b,bl,ba,bla */
9819 || ((insn & (0x3f << 26)) == (16u << 26) /* bc,bcl,bca,bcla*/
9820 && (insn & (0x14 << 21)) == (0x14 << 21)) /* with BO=0x14 */
9821 || ((insn & (0x3f << 26)) == (19u << 26)
9822 && (insn & (0x3ff << 1)) == (16u << 1) /* bclr,bclrl */
9823 && (insn & (0x14 << 21)) == (0x14 << 21)))/* with BO=0x14 */
9824 continue;
9825
9826 patch_addr = (start_addr + input_section->size
9827 - relax_info->workaround_size);
9828 patch_addr = (patch_addr + 15) & -16;
9829 patch_off = patch_addr - start_addr;
9830 bfd_put_32 (input_bfd, B + patch_off - offset, contents + offset);
9831
9832 if (rel != NULL
9833 && rel->r_offset >= offset
9834 && rel->r_offset < offset + 4)
9835 {
9836 asection *sreloc;
9837
9838 /* If the insn we are patching had a reloc, adjust the
9839 reloc r_offset so that the reloc applies to the moved
9840 location. This matters for -r and --emit-relocs. */
9841 if (rel + 1 != relend)
9842 {
9843 Elf_Internal_Rela tmp = *rel;
9844
9845 /* Keep the relocs sorted by r_offset. */
9846 memmove (rel, rel + 1, (relend - (rel + 1)) * sizeof (*rel));
9847 relend[-1] = tmp;
9848 }
9849 relend[-1].r_offset += patch_off - offset;
9850
9851 /* Adjust REL16 addends too. */
9852 switch (ELF32_R_TYPE (relend[-1].r_info))
9853 {
9854 case R_PPC_REL16:
9855 case R_PPC_REL16_LO:
9856 case R_PPC_REL16_HI:
9857 case R_PPC_REL16_HA:
9858 relend[-1].r_addend += patch_off - offset;
9859 break;
9860 default:
9861 break;
9862 }
9863
9864 /* If we are building a PIE or shared library with
9865 non-PIC objects, perhaps we had a dynamic reloc too?
9866 If so, the dynamic reloc must move with the insn. */
9867 sreloc = elf_section_data (input_section)->sreloc;
9868 if (sreloc != NULL)
9869 {
9870 Elf32_External_Rela *slo, *shi, *srelend;
9871 bfd_vma soffset;
9872
9873 slo = (Elf32_External_Rela *) sreloc->contents;
9874 shi = srelend = slo + sreloc->reloc_count;
9875 soffset = (offset + input_section->output_section->vma
9876 + input_section->output_offset);
9877 while (slo < shi)
9878 {
9879 Elf32_External_Rela *srel = slo + (shi - slo) / 2;
9880 bfd_elf32_swap_reloca_in (output_bfd, (bfd_byte *) srel,
9881 &outrel);
9882 if (outrel.r_offset < soffset)
9883 slo = srel + 1;
9884 else if (outrel.r_offset > soffset + 3)
9885 shi = srel;
9886 else
9887 {
9888 if (srel + 1 != srelend)
9889 {
9890 memmove (srel, srel + 1,
9891 (srelend - (srel + 1)) * sizeof (*srel));
9892 srel = srelend - 1;
9893 }
9894 outrel.r_offset += patch_off - offset;
9895 bfd_elf32_swap_reloca_out (output_bfd, &outrel,
9896 (bfd_byte *) srel);
9897 break;
9898 }
9899 }
9900 }
9901 }
9902 else
9903 rel = NULL;
9904
9905 if ((insn & (0x3f << 26)) == (16u << 26) /* bc */
9906 && (insn & 2) == 0 /* relative */)
9907 {
9908 bfd_vma delta = ((insn & 0xfffc) ^ 0x8000) - 0x8000;
9909
9910 delta += offset - patch_off;
9911 if (bfd_link_relocatable (info) && rel != NULL)
9912 delta = 0;
9913 if (!bfd_link_relocatable (info) && rel != NULL)
9914 {
9915 enum elf_ppc_reloc_type r_type;
9916
9917 r_type = ELF32_R_TYPE (relend[-1].r_info);
9918 if (r_type == R_PPC_REL14_BRTAKEN)
9919 insn |= BRANCH_PREDICT_BIT;
9920 else if (r_type == R_PPC_REL14_BRNTAKEN)
9921 insn &= ~BRANCH_PREDICT_BIT;
9922 else
9923 BFD_ASSERT (r_type == R_PPC_REL14);
9924
9925 if ((r_type == R_PPC_REL14_BRTAKEN
9926 || r_type == R_PPC_REL14_BRNTAKEN)
9927 && delta + 0x8000 < 0x10000
9928 && (bfd_signed_vma) delta < 0)
9929 insn ^= BRANCH_PREDICT_BIT;
9930 }
9931 if (delta + 0x8000 < 0x10000)
9932 {
9933 bfd_put_32 (input_bfd,
9934 (insn & ~0xfffc) | (delta & 0xfffc),
9935 contents + patch_off);
9936 patch_off += 4;
9937 bfd_put_32 (input_bfd,
9938 B | ((offset + 4 - patch_off) & 0x3fffffc),
9939 contents + patch_off);
9940 patch_off += 4;
9941 }
9942 else
9943 {
9944 if (rel != NULL)
9945 {
9946 unsigned int r_sym = ELF32_R_SYM (relend[-1].r_info);
9947
9948 relend[-1].r_offset += 8;
9949 relend[-1].r_info = ELF32_R_INFO (r_sym, R_PPC_REL24);
9950 }
9951 bfd_put_32 (input_bfd,
9952 (insn & ~0xfffc) | 8,
9953 contents + patch_off);
9954 patch_off += 4;
9955 bfd_put_32 (input_bfd,
9956 B | ((offset + 4 - patch_off) & 0x3fffffc),
9957 contents + patch_off);
9958 patch_off += 4;
9959 bfd_put_32 (input_bfd,
9960 B | ((delta - 8) & 0x3fffffc),
9961 contents + patch_off);
9962 patch_off += 4;
9963 }
9964 }
9965 else
9966 {
9967 bfd_put_32 (input_bfd, insn, contents + patch_off);
9968 patch_off += 4;
9969 bfd_put_32 (input_bfd,
9970 B | ((offset + 4 - patch_off) & 0x3fffffc),
9971 contents + patch_off);
9972 patch_off += 4;
9973 }
9974 BFD_ASSERT (patch_off <= input_section->size);
9975 relax_info->workaround_size = input_section->size - patch_off;
9976 }
9977 }
9978
9979 return ret;
9980 }
9981 \f
9982 /* Finish up dynamic symbol handling. We set the contents of various
9983 dynamic sections here. */
9984
9985 static bfd_boolean
9986 ppc_elf_finish_dynamic_symbol (bfd *output_bfd,
9987 struct bfd_link_info *info,
9988 struct elf_link_hash_entry *h,
9989 Elf_Internal_Sym *sym)
9990 {
9991 struct ppc_elf_link_hash_table *htab;
9992 struct plt_entry *ent;
9993 bfd_boolean doneone;
9994
9995 #ifdef DEBUG
9996 fprintf (stderr, "ppc_elf_finish_dynamic_symbol called for %s",
9997 h->root.root.string);
9998 #endif
9999
10000 htab = ppc_elf_hash_table (info);
10001 BFD_ASSERT (htab->elf.dynobj != NULL);
10002
10003 doneone = FALSE;
10004 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
10005 if (ent->plt.offset != (bfd_vma) -1)
10006 {
10007 if (!doneone)
10008 {
10009 Elf_Internal_Rela rela;
10010 bfd_byte *loc;
10011 bfd_vma reloc_index;
10012
10013 if (htab->plt_type == PLT_NEW
10014 || !htab->elf.dynamic_sections_created
10015 || h->dynindx == -1)
10016 reloc_index = ent->plt.offset / 4;
10017 else
10018 {
10019 reloc_index = ((ent->plt.offset - htab->plt_initial_entry_size)
10020 / htab->plt_slot_size);
10021 if (reloc_index > PLT_NUM_SINGLE_ENTRIES
10022 && htab->plt_type == PLT_OLD)
10023 reloc_index -= (reloc_index - PLT_NUM_SINGLE_ENTRIES) / 2;
10024 }
10025
10026 /* This symbol has an entry in the procedure linkage table.
10027 Set it up. */
10028 if (htab->plt_type == PLT_VXWORKS
10029 && htab->elf.dynamic_sections_created
10030 && h->dynindx != -1)
10031 {
10032 bfd_vma got_offset;
10033 const bfd_vma *plt_entry;
10034
10035 /* The first three entries in .got.plt are reserved. */
10036 got_offset = (reloc_index + 3) * 4;
10037
10038 /* Use the right PLT. */
10039 plt_entry = bfd_link_pic (info) ? ppc_elf_vxworks_pic_plt_entry
10040 : ppc_elf_vxworks_plt_entry;
10041
10042 /* Fill in the .plt on VxWorks. */
10043 if (bfd_link_pic (info))
10044 {
10045 bfd_put_32 (output_bfd,
10046 plt_entry[0] | PPC_HA (got_offset),
10047 htab->plt->contents + ent->plt.offset + 0);
10048 bfd_put_32 (output_bfd,
10049 plt_entry[1] | PPC_LO (got_offset),
10050 htab->plt->contents + ent->plt.offset + 4);
10051 }
10052 else
10053 {
10054 bfd_vma got_loc = got_offset + SYM_VAL (htab->elf.hgot);
10055
10056 bfd_put_32 (output_bfd,
10057 plt_entry[0] | PPC_HA (got_loc),
10058 htab->plt->contents + ent->plt.offset + 0);
10059 bfd_put_32 (output_bfd,
10060 plt_entry[1] | PPC_LO (got_loc),
10061 htab->plt->contents + ent->plt.offset + 4);
10062 }
10063
10064 bfd_put_32 (output_bfd, plt_entry[2],
10065 htab->plt->contents + ent->plt.offset + 8);
10066 bfd_put_32 (output_bfd, plt_entry[3],
10067 htab->plt->contents + ent->plt.offset + 12);
10068
10069 /* This instruction is an immediate load. The value loaded is
10070 the byte offset of the R_PPC_JMP_SLOT relocation from the
10071 start of the .rela.plt section. The value is stored in the
10072 low-order 16 bits of the load instruction. */
10073 /* NOTE: It appears that this is now an index rather than a
10074 prescaled offset. */
10075 bfd_put_32 (output_bfd,
10076 plt_entry[4] | reloc_index,
10077 htab->plt->contents + ent->plt.offset + 16);
10078 /* This instruction is a PC-relative branch whose target is
10079 the start of the PLT section. The address of this branch
10080 instruction is 20 bytes beyond the start of this PLT entry.
10081 The address is encoded in bits 6-29, inclusive. The value
10082 stored is right-shifted by two bits, permitting a 26-bit
10083 offset. */
10084 bfd_put_32 (output_bfd,
10085 (plt_entry[5]
10086 | (-(ent->plt.offset + 20) & 0x03fffffc)),
10087 htab->plt->contents + ent->plt.offset + 20);
10088 bfd_put_32 (output_bfd, plt_entry[6],
10089 htab->plt->contents + ent->plt.offset + 24);
10090 bfd_put_32 (output_bfd, plt_entry[7],
10091 htab->plt->contents + ent->plt.offset + 28);
10092
10093 /* Fill in the GOT entry corresponding to this PLT slot with
10094 the address immediately after the "bctr" instruction
10095 in this PLT entry. */
10096 bfd_put_32 (output_bfd, (htab->plt->output_section->vma
10097 + htab->plt->output_offset
10098 + ent->plt.offset + 16),
10099 htab->sgotplt->contents + got_offset);
10100
10101 if (!bfd_link_pic (info))
10102 {
10103 /* Fill in a couple of entries in .rela.plt.unloaded. */
10104 loc = htab->srelplt2->contents
10105 + ((VXWORKS_PLTRESOLVE_RELOCS + reloc_index
10106 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS)
10107 * sizeof (Elf32_External_Rela));
10108
10109 /* Provide the @ha relocation for the first instruction. */
10110 rela.r_offset = (htab->plt->output_section->vma
10111 + htab->plt->output_offset
10112 + ent->plt.offset + 2);
10113 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
10114 R_PPC_ADDR16_HA);
10115 rela.r_addend = got_offset;
10116 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10117 loc += sizeof (Elf32_External_Rela);
10118
10119 /* Provide the @l relocation for the second instruction. */
10120 rela.r_offset = (htab->plt->output_section->vma
10121 + htab->plt->output_offset
10122 + ent->plt.offset + 6);
10123 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
10124 R_PPC_ADDR16_LO);
10125 rela.r_addend = got_offset;
10126 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10127 loc += sizeof (Elf32_External_Rela);
10128
10129 /* Provide a relocation for the GOT entry corresponding to this
10130 PLT slot. Point it at the middle of the .plt entry. */
10131 rela.r_offset = (htab->sgotplt->output_section->vma
10132 + htab->sgotplt->output_offset
10133 + got_offset);
10134 rela.r_info = ELF32_R_INFO (htab->elf.hplt->indx,
10135 R_PPC_ADDR32);
10136 rela.r_addend = ent->plt.offset + 16;
10137 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10138 }
10139
10140 /* VxWorks uses non-standard semantics for R_PPC_JMP_SLOT.
10141 In particular, the offset for the relocation is not the
10142 address of the PLT entry for this function, as specified
10143 by the ABI. Instead, the offset is set to the address of
10144 the GOT slot for this function. See EABI 4.4.4.1. */
10145 rela.r_offset = (htab->sgotplt->output_section->vma
10146 + htab->sgotplt->output_offset
10147 + got_offset);
10148
10149 }
10150 else
10151 {
10152 asection *splt = htab->plt;
10153 if (!htab->elf.dynamic_sections_created
10154 || h->dynindx == -1)
10155 splt = htab->iplt;
10156
10157 rela.r_offset = (splt->output_section->vma
10158 + splt->output_offset
10159 + ent->plt.offset);
10160 if (htab->plt_type == PLT_OLD
10161 || !htab->elf.dynamic_sections_created
10162 || h->dynindx == -1)
10163 {
10164 /* We don't need to fill in the .plt. The ppc dynamic
10165 linker will fill it in. */
10166 }
10167 else
10168 {
10169 bfd_vma val = (htab->glink_pltresolve + ent->plt.offset
10170 + htab->glink->output_section->vma
10171 + htab->glink->output_offset);
10172 bfd_put_32 (output_bfd, val,
10173 splt->contents + ent->plt.offset);
10174 }
10175 }
10176
10177 /* Fill in the entry in the .rela.plt section. */
10178 rela.r_addend = 0;
10179 if (!htab->elf.dynamic_sections_created
10180 || h->dynindx == -1)
10181 {
10182 BFD_ASSERT (h->type == STT_GNU_IFUNC
10183 && h->def_regular
10184 && (h->root.type == bfd_link_hash_defined
10185 || h->root.type == bfd_link_hash_defweak));
10186 rela.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
10187 rela.r_addend = SYM_VAL (h);
10188 }
10189 else
10190 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_JMP_SLOT);
10191
10192 if (!htab->elf.dynamic_sections_created
10193 || h->dynindx == -1)
10194 loc = (htab->reliplt->contents
10195 + (htab->reliplt->reloc_count++
10196 * sizeof (Elf32_External_Rela)));
10197 else
10198 loc = (htab->relplt->contents
10199 + reloc_index * sizeof (Elf32_External_Rela));
10200 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10201
10202 if (!h->def_regular)
10203 {
10204 /* Mark the symbol as undefined, rather than as
10205 defined in the .plt section. Leave the value if
10206 there were any relocations where pointer equality
10207 matters (this is a clue for the dynamic linker, to
10208 make function pointer comparisons work between an
10209 application and shared library), otherwise set it
10210 to zero. */
10211 sym->st_shndx = SHN_UNDEF;
10212 if (!h->pointer_equality_needed)
10213 sym->st_value = 0;
10214 else if (!h->ref_regular_nonweak)
10215 {
10216 /* This breaks function pointer comparisons, but
10217 that is better than breaking tests for a NULL
10218 function pointer. */
10219 sym->st_value = 0;
10220 }
10221 }
10222 else if (h->type == STT_GNU_IFUNC
10223 && !bfd_link_pic (info))
10224 {
10225 /* Set the value of ifunc symbols in a non-pie
10226 executable to the glink entry. This is to avoid
10227 text relocations. We can't do this for ifunc in
10228 allocate_dynrelocs, as we do for normal dynamic
10229 function symbols with plt entries, because we need
10230 to keep the original value around for the ifunc
10231 relocation. */
10232 sym->st_shndx = (_bfd_elf_section_from_bfd_section
10233 (output_bfd, htab->glink->output_section));
10234 sym->st_value = (ent->glink_offset
10235 + htab->glink->output_offset
10236 + htab->glink->output_section->vma);
10237 }
10238 doneone = TRUE;
10239 }
10240
10241 if (htab->plt_type == PLT_NEW
10242 || !htab->elf.dynamic_sections_created
10243 || h->dynindx == -1)
10244 {
10245 unsigned char *p;
10246 asection *splt = htab->plt;
10247 if (!htab->elf.dynamic_sections_created
10248 || h->dynindx == -1)
10249 splt = htab->iplt;
10250
10251 p = (unsigned char *) htab->glink->contents + ent->glink_offset;
10252
10253 if (h == htab->tls_get_addr && !htab->params->no_tls_get_addr_opt)
10254 {
10255 bfd_put_32 (output_bfd, LWZ_11_3, p);
10256 p += 4;
10257 bfd_put_32 (output_bfd, LWZ_12_3 + 4, p);
10258 p += 4;
10259 bfd_put_32 (output_bfd, MR_0_3, p);
10260 p += 4;
10261 bfd_put_32 (output_bfd, CMPWI_11_0, p);
10262 p += 4;
10263 bfd_put_32 (output_bfd, ADD_3_12_2, p);
10264 p += 4;
10265 bfd_put_32 (output_bfd, BEQLR, p);
10266 p += 4;
10267 bfd_put_32 (output_bfd, MR_3_0, p);
10268 p += 4;
10269 bfd_put_32 (output_bfd, NOP, p);
10270 p += 4;
10271 }
10272
10273 write_glink_stub (ent, splt, p, info);
10274
10275 if (!bfd_link_pic (info))
10276 /* We only need one non-PIC glink stub. */
10277 break;
10278 }
10279 else
10280 break;
10281 }
10282
10283 if (h->needs_copy)
10284 {
10285 asection *s;
10286 Elf_Internal_Rela rela;
10287 bfd_byte *loc;
10288
10289 /* This symbols needs a copy reloc. Set it up. */
10290
10291 #ifdef DEBUG
10292 fprintf (stderr, ", copy");
10293 #endif
10294
10295 BFD_ASSERT (h->dynindx != -1);
10296
10297 if (ppc_elf_hash_entry (h)->has_sda_refs)
10298 s = htab->relsbss;
10299 else
10300 s = htab->relbss;
10301 BFD_ASSERT (s != NULL);
10302
10303 rela.r_offset = SYM_VAL (h);
10304 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_COPY);
10305 rela.r_addend = 0;
10306 loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
10307 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10308 }
10309
10310 #ifdef DEBUG
10311 fprintf (stderr, "\n");
10312 #endif
10313
10314 return TRUE;
10315 }
10316 \f
10317 static enum elf_reloc_type_class
10318 ppc_elf_reloc_type_class (const struct bfd_link_info *info,
10319 const asection *rel_sec,
10320 const Elf_Internal_Rela *rela)
10321 {
10322 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
10323
10324 if (rel_sec == htab->reliplt)
10325 return reloc_class_ifunc;
10326
10327 switch (ELF32_R_TYPE (rela->r_info))
10328 {
10329 case R_PPC_RELATIVE:
10330 return reloc_class_relative;
10331 case R_PPC_JMP_SLOT:
10332 return reloc_class_plt;
10333 case R_PPC_COPY:
10334 return reloc_class_copy;
10335 default:
10336 return reloc_class_normal;
10337 }
10338 }
10339 \f
10340 /* Finish up the dynamic sections. */
10341
10342 static bfd_boolean
10343 ppc_elf_finish_dynamic_sections (bfd *output_bfd,
10344 struct bfd_link_info *info)
10345 {
10346 asection *sdyn;
10347 asection *splt;
10348 struct ppc_elf_link_hash_table *htab;
10349 bfd_vma got;
10350 bfd *dynobj;
10351 bfd_boolean ret = TRUE;
10352
10353 #ifdef DEBUG
10354 fprintf (stderr, "ppc_elf_finish_dynamic_sections called\n");
10355 #endif
10356
10357 htab = ppc_elf_hash_table (info);
10358 dynobj = elf_hash_table (info)->dynobj;
10359 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
10360 if (htab->is_vxworks)
10361 splt = bfd_get_linker_section (dynobj, ".plt");
10362 else
10363 splt = NULL;
10364
10365 got = 0;
10366 if (htab->elf.hgot != NULL)
10367 got = SYM_VAL (htab->elf.hgot);
10368
10369 if (htab->elf.dynamic_sections_created)
10370 {
10371 Elf32_External_Dyn *dyncon, *dynconend;
10372
10373 BFD_ASSERT (htab->plt != NULL && sdyn != NULL);
10374
10375 dyncon = (Elf32_External_Dyn *) sdyn->contents;
10376 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
10377 for (; dyncon < dynconend; dyncon++)
10378 {
10379 Elf_Internal_Dyn dyn;
10380 asection *s;
10381
10382 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
10383
10384 switch (dyn.d_tag)
10385 {
10386 case DT_PLTGOT:
10387 if (htab->is_vxworks)
10388 s = htab->sgotplt;
10389 else
10390 s = htab->plt;
10391 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
10392 break;
10393
10394 case DT_PLTRELSZ:
10395 dyn.d_un.d_val = htab->relplt->size;
10396 break;
10397
10398 case DT_JMPREL:
10399 s = htab->relplt;
10400 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
10401 break;
10402
10403 case DT_PPC_GOT:
10404 dyn.d_un.d_ptr = got;
10405 break;
10406
10407 case DT_RELASZ:
10408 if (htab->is_vxworks)
10409 {
10410 if (htab->relplt)
10411 dyn.d_un.d_ptr -= htab->relplt->size;
10412 break;
10413 }
10414 continue;
10415
10416 default:
10417 if (htab->is_vxworks
10418 && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn))
10419 break;
10420 continue;
10421 }
10422
10423 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
10424 }
10425 }
10426
10427 if (htab->got != NULL)
10428 {
10429 if (htab->elf.hgot->root.u.def.section == htab->got
10430 || htab->elf.hgot->root.u.def.section == htab->sgotplt)
10431 {
10432 unsigned char *p = htab->elf.hgot->root.u.def.section->contents;
10433
10434 p += htab->elf.hgot->root.u.def.value;
10435 if (htab->plt_type == PLT_OLD)
10436 {
10437 /* Add a blrl instruction at _GLOBAL_OFFSET_TABLE_-4
10438 so that a function can easily find the address of
10439 _GLOBAL_OFFSET_TABLE_. */
10440 BFD_ASSERT (htab->elf.hgot->root.u.def.value - 4
10441 < htab->elf.hgot->root.u.def.section->size);
10442 bfd_put_32 (output_bfd, 0x4e800021, p - 4);
10443 }
10444
10445 if (sdyn != NULL)
10446 {
10447 bfd_vma val = sdyn->output_section->vma + sdyn->output_offset;
10448 BFD_ASSERT (htab->elf.hgot->root.u.def.value
10449 < htab->elf.hgot->root.u.def.section->size);
10450 bfd_put_32 (output_bfd, val, p);
10451 }
10452 }
10453 else
10454 {
10455 info->callbacks->einfo (_("%P: %s not defined in linker created %s\n"),
10456 htab->elf.hgot->root.root.string,
10457 (htab->sgotplt != NULL
10458 ? htab->sgotplt->name : htab->got->name));
10459 bfd_set_error (bfd_error_bad_value);
10460 ret = FALSE;
10461 }
10462
10463 elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 4;
10464 }
10465
10466 /* Fill in the first entry in the VxWorks procedure linkage table. */
10467 if (splt && splt->size > 0)
10468 {
10469 /* Use the right PLT. */
10470 const bfd_vma *plt_entry = (bfd_link_pic (info)
10471 ? ppc_elf_vxworks_pic_plt0_entry
10472 : ppc_elf_vxworks_plt0_entry);
10473
10474 if (!bfd_link_pic (info))
10475 {
10476 bfd_vma got_value = SYM_VAL (htab->elf.hgot);
10477
10478 bfd_put_32 (output_bfd, plt_entry[0] | PPC_HA (got_value),
10479 splt->contents + 0);
10480 bfd_put_32 (output_bfd, plt_entry[1] | PPC_LO (got_value),
10481 splt->contents + 4);
10482 }
10483 else
10484 {
10485 bfd_put_32 (output_bfd, plt_entry[0], splt->contents + 0);
10486 bfd_put_32 (output_bfd, plt_entry[1], splt->contents + 4);
10487 }
10488 bfd_put_32 (output_bfd, plt_entry[2], splt->contents + 8);
10489 bfd_put_32 (output_bfd, plt_entry[3], splt->contents + 12);
10490 bfd_put_32 (output_bfd, plt_entry[4], splt->contents + 16);
10491 bfd_put_32 (output_bfd, plt_entry[5], splt->contents + 20);
10492 bfd_put_32 (output_bfd, plt_entry[6], splt->contents + 24);
10493 bfd_put_32 (output_bfd, plt_entry[7], splt->contents + 28);
10494
10495 if (! bfd_link_pic (info))
10496 {
10497 Elf_Internal_Rela rela;
10498 bfd_byte *loc;
10499
10500 loc = htab->srelplt2->contents;
10501
10502 /* Output the @ha relocation for the first instruction. */
10503 rela.r_offset = (htab->plt->output_section->vma
10504 + htab->plt->output_offset
10505 + 2);
10506 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
10507 rela.r_addend = 0;
10508 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10509 loc += sizeof (Elf32_External_Rela);
10510
10511 /* Output the @l relocation for the second instruction. */
10512 rela.r_offset = (htab->plt->output_section->vma
10513 + htab->plt->output_offset
10514 + 6);
10515 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
10516 rela.r_addend = 0;
10517 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10518 loc += sizeof (Elf32_External_Rela);
10519
10520 /* Fix up the remaining relocations. They may have the wrong
10521 symbol index for _G_O_T_ or _P_L_T_ depending on the order
10522 in which symbols were output. */
10523 while (loc < htab->srelplt2->contents + htab->srelplt2->size)
10524 {
10525 Elf_Internal_Rela rel;
10526
10527 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
10528 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
10529 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
10530 loc += sizeof (Elf32_External_Rela);
10531
10532 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
10533 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
10534 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
10535 loc += sizeof (Elf32_External_Rela);
10536
10537 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
10538 rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_PPC_ADDR32);
10539 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
10540 loc += sizeof (Elf32_External_Rela);
10541 }
10542 }
10543 }
10544
10545 if (htab->glink != NULL
10546 && htab->glink->contents != NULL
10547 && htab->elf.dynamic_sections_created)
10548 {
10549 unsigned char *p;
10550 unsigned char *endp;
10551 bfd_vma res0;
10552 unsigned int i;
10553
10554 /*
10555 * PIC glink code is the following:
10556 *
10557 * # ith PLT code stub.
10558 * addis 11,30,(plt+(i-1)*4-got)@ha
10559 * lwz 11,(plt+(i-1)*4-got)@l(11)
10560 * mtctr 11
10561 * bctr
10562 *
10563 * # A table of branches, one for each plt entry.
10564 * # The idea is that the plt call stub loads ctr and r11 with these
10565 * # addresses, so (r11 - res_0) gives the plt index * 4.
10566 * res_0: b PLTresolve
10567 * res_1: b PLTresolve
10568 * .
10569 * # Some number of entries towards the end can be nops
10570 * res_n_m3: nop
10571 * res_n_m2: nop
10572 * res_n_m1:
10573 *
10574 * PLTresolve:
10575 * addis 11,11,(1f-res_0)@ha
10576 * mflr 0
10577 * bcl 20,31,1f
10578 * 1: addi 11,11,(1b-res_0)@l
10579 * mflr 12
10580 * mtlr 0
10581 * sub 11,11,12 # r11 = index * 4
10582 * addis 12,12,(got+4-1b)@ha
10583 * lwz 0,(got+4-1b)@l(12) # got[1] address of dl_runtime_resolve
10584 * lwz 12,(got+8-1b)@l(12) # got[2] contains the map address
10585 * mtctr 0
10586 * add 0,11,11
10587 * add 11,0,11 # r11 = index * 12 = reloc offset.
10588 * bctr
10589 */
10590 static const unsigned int pic_plt_resolve[] =
10591 {
10592 ADDIS_11_11,
10593 MFLR_0,
10594 BCL_20_31,
10595 ADDI_11_11,
10596 MFLR_12,
10597 MTLR_0,
10598 SUB_11_11_12,
10599 ADDIS_12_12,
10600 LWZ_0_12,
10601 LWZ_12_12,
10602 MTCTR_0,
10603 ADD_0_11_11,
10604 ADD_11_0_11,
10605 BCTR,
10606 NOP,
10607 NOP
10608 };
10609
10610 /*
10611 * Non-PIC glink code is a little simpler.
10612 *
10613 * # ith PLT code stub.
10614 * lis 11,(plt+(i-1)*4)@ha
10615 * lwz 11,(plt+(i-1)*4)@l(11)
10616 * mtctr 11
10617 * bctr
10618 *
10619 * The branch table is the same, then comes
10620 *
10621 * PLTresolve:
10622 * lis 12,(got+4)@ha
10623 * addis 11,11,(-res_0)@ha
10624 * lwz 0,(got+4)@l(12) # got[1] address of dl_runtime_resolve
10625 * addi 11,11,(-res_0)@l # r11 = index * 4
10626 * mtctr 0
10627 * add 0,11,11
10628 * lwz 12,(got+8)@l(12) # got[2] contains the map address
10629 * add 11,0,11 # r11 = index * 12 = reloc offset.
10630 * bctr
10631 */
10632 static const unsigned int plt_resolve[] =
10633 {
10634 LIS_12,
10635 ADDIS_11_11,
10636 LWZ_0_12,
10637 ADDI_11_11,
10638 MTCTR_0,
10639 ADD_0_11_11,
10640 LWZ_12_12,
10641 ADD_11_0_11,
10642 BCTR,
10643 NOP,
10644 NOP,
10645 NOP,
10646 NOP,
10647 NOP,
10648 NOP,
10649 NOP
10650 };
10651
10652 if (ARRAY_SIZE (pic_plt_resolve) != GLINK_PLTRESOLVE / 4)
10653 abort ();
10654 if (ARRAY_SIZE (plt_resolve) != GLINK_PLTRESOLVE / 4)
10655 abort ();
10656
10657 /* Build the branch table, one for each plt entry (less one),
10658 and perhaps some padding. */
10659 p = htab->glink->contents;
10660 p += htab->glink_pltresolve;
10661 endp = htab->glink->contents;
10662 endp += htab->glink->size - GLINK_PLTRESOLVE;
10663 while (p < endp - (htab->params->ppc476_workaround ? 0 : 8 * 4))
10664 {
10665 bfd_put_32 (output_bfd, B + endp - p, p);
10666 p += 4;
10667 }
10668 while (p < endp)
10669 {
10670 bfd_put_32 (output_bfd, NOP, p);
10671 p += 4;
10672 }
10673
10674 res0 = (htab->glink_pltresolve
10675 + htab->glink->output_section->vma
10676 + htab->glink->output_offset);
10677
10678 if (htab->params->ppc476_workaround)
10679 {
10680 /* Ensure that a call stub at the end of a page doesn't
10681 result in prefetch over the end of the page into the
10682 glink branch table. */
10683 bfd_vma pagesize = (bfd_vma) 1 << htab->params->pagesize_p2;
10684 bfd_vma page_addr;
10685 bfd_vma glink_start = (htab->glink->output_section->vma
10686 + htab->glink->output_offset);
10687
10688 for (page_addr = res0 & -pagesize;
10689 page_addr > glink_start;
10690 page_addr -= pagesize)
10691 {
10692 /* We have a plt call stub that may need fixing. */
10693 bfd_byte *loc;
10694 unsigned int insn;
10695
10696 loc = htab->glink->contents + page_addr - 4 - glink_start;
10697 insn = bfd_get_32 (output_bfd, loc);
10698 if (insn == BCTR)
10699 {
10700 /* By alignment, we know that there must be at least
10701 one other call stub before this one. */
10702 insn = bfd_get_32 (output_bfd, loc - 16);
10703 if (insn == BCTR)
10704 bfd_put_32 (output_bfd, B | (-16 & 0x3fffffc), loc);
10705 else
10706 bfd_put_32 (output_bfd, B | (-20 & 0x3fffffc), loc);
10707 }
10708 }
10709 }
10710
10711 /* Last comes the PLTresolve stub. */
10712 if (bfd_link_pic (info))
10713 {
10714 bfd_vma bcl;
10715
10716 for (i = 0; i < ARRAY_SIZE (pic_plt_resolve); i++)
10717 {
10718 unsigned int insn = pic_plt_resolve[i];
10719
10720 if (htab->params->ppc476_workaround && insn == NOP)
10721 insn = BA + 0;
10722 bfd_put_32 (output_bfd, insn, p);
10723 p += 4;
10724 }
10725 p -= 4 * ARRAY_SIZE (pic_plt_resolve);
10726
10727 bcl = (htab->glink->size - GLINK_PLTRESOLVE + 3*4
10728 + htab->glink->output_section->vma
10729 + htab->glink->output_offset);
10730
10731 bfd_put_32 (output_bfd,
10732 ADDIS_11_11 + PPC_HA (bcl - res0), p + 0*4);
10733 bfd_put_32 (output_bfd,
10734 ADDI_11_11 + PPC_LO (bcl - res0), p + 3*4);
10735 bfd_put_32 (output_bfd,
10736 ADDIS_12_12 + PPC_HA (got + 4 - bcl), p + 7*4);
10737 if (PPC_HA (got + 4 - bcl) == PPC_HA (got + 8 - bcl))
10738 {
10739 bfd_put_32 (output_bfd,
10740 LWZ_0_12 + PPC_LO (got + 4 - bcl), p + 8*4);
10741 bfd_put_32 (output_bfd,
10742 LWZ_12_12 + PPC_LO (got + 8 - bcl), p + 9*4);
10743 }
10744 else
10745 {
10746 bfd_put_32 (output_bfd,
10747 LWZU_0_12 + PPC_LO (got + 4 - bcl), p + 8*4);
10748 bfd_put_32 (output_bfd,
10749 LWZ_12_12 + 4, p + 9*4);
10750 }
10751 }
10752 else
10753 {
10754 for (i = 0; i < ARRAY_SIZE (plt_resolve); i++)
10755 {
10756 unsigned int insn = plt_resolve[i];
10757
10758 if (htab->params->ppc476_workaround && insn == NOP)
10759 insn = BA + 0;
10760 bfd_put_32 (output_bfd, insn, p);
10761 p += 4;
10762 }
10763 p -= 4 * ARRAY_SIZE (plt_resolve);
10764
10765 bfd_put_32 (output_bfd,
10766 LIS_12 + PPC_HA (got + 4), p + 0*4);
10767 bfd_put_32 (output_bfd,
10768 ADDIS_11_11 + PPC_HA (-res0), p + 1*4);
10769 bfd_put_32 (output_bfd,
10770 ADDI_11_11 + PPC_LO (-res0), p + 3*4);
10771 if (PPC_HA (got + 4) == PPC_HA (got + 8))
10772 {
10773 bfd_put_32 (output_bfd,
10774 LWZ_0_12 + PPC_LO (got + 4), p + 2*4);
10775 bfd_put_32 (output_bfd,
10776 LWZ_12_12 + PPC_LO (got + 8), p + 6*4);
10777 }
10778 else
10779 {
10780 bfd_put_32 (output_bfd,
10781 LWZU_0_12 + PPC_LO (got + 4), p + 2*4);
10782 bfd_put_32 (output_bfd,
10783 LWZ_12_12 + 4, p + 6*4);
10784 }
10785 }
10786 }
10787
10788 if (htab->glink_eh_frame != NULL
10789 && htab->glink_eh_frame->contents != NULL)
10790 {
10791 unsigned char *p = htab->glink_eh_frame->contents;
10792 bfd_vma val;
10793
10794 p += sizeof (glink_eh_frame_cie);
10795 /* FDE length. */
10796 p += 4;
10797 /* CIE pointer. */
10798 p += 4;
10799 /* Offset to .glink. */
10800 val = (htab->glink->output_section->vma
10801 + htab->glink->output_offset);
10802 val -= (htab->glink_eh_frame->output_section->vma
10803 + htab->glink_eh_frame->output_offset);
10804 val -= p - htab->glink_eh_frame->contents;
10805 bfd_put_32 (htab->elf.dynobj, val, p);
10806
10807 if (htab->glink_eh_frame->sec_info_type == SEC_INFO_TYPE_EH_FRAME
10808 && !_bfd_elf_write_section_eh_frame (output_bfd, info,
10809 htab->glink_eh_frame,
10810 htab->glink_eh_frame->contents))
10811 return FALSE;
10812 }
10813
10814 return ret;
10815 }
10816 \f
10817 #define TARGET_LITTLE_SYM powerpc_elf32_le_vec
10818 #define TARGET_LITTLE_NAME "elf32-powerpcle"
10819 #define TARGET_BIG_SYM powerpc_elf32_vec
10820 #define TARGET_BIG_NAME "elf32-powerpc"
10821 #define ELF_ARCH bfd_arch_powerpc
10822 #define ELF_TARGET_ID PPC32_ELF_DATA
10823 #define ELF_MACHINE_CODE EM_PPC
10824 #ifdef __QNXTARGET__
10825 #define ELF_MAXPAGESIZE 0x1000
10826 #define ELF_COMMONPAGESIZE 0x1000
10827 #else
10828 #define ELF_MAXPAGESIZE 0x10000
10829 #define ELF_COMMONPAGESIZE 0x10000
10830 #endif
10831 #define ELF_MINPAGESIZE 0x1000
10832 #define elf_info_to_howto ppc_elf_info_to_howto
10833
10834 #ifdef EM_CYGNUS_POWERPC
10835 #define ELF_MACHINE_ALT1 EM_CYGNUS_POWERPC
10836 #endif
10837
10838 #ifdef EM_PPC_OLD
10839 #define ELF_MACHINE_ALT2 EM_PPC_OLD
10840 #endif
10841
10842 #define elf_backend_plt_not_loaded 1
10843 #define elf_backend_can_gc_sections 1
10844 #define elf_backend_can_refcount 1
10845 #define elf_backend_rela_normal 1
10846 #define elf_backend_caches_rawsize 1
10847
10848 #define bfd_elf32_mkobject ppc_elf_mkobject
10849 #define bfd_elf32_bfd_merge_private_bfd_data ppc_elf_merge_private_bfd_data
10850 #define bfd_elf32_bfd_relax_section ppc_elf_relax_section
10851 #define bfd_elf32_bfd_reloc_type_lookup ppc_elf_reloc_type_lookup
10852 #define bfd_elf32_bfd_reloc_name_lookup ppc_elf_reloc_name_lookup
10853 #define bfd_elf32_bfd_set_private_flags ppc_elf_set_private_flags
10854 #define bfd_elf32_bfd_link_hash_table_create ppc_elf_link_hash_table_create
10855 #define bfd_elf32_get_synthetic_symtab ppc_elf_get_synthetic_symtab
10856
10857 #define elf_backend_object_p ppc_elf_object_p
10858 #define elf_backend_gc_mark_hook ppc_elf_gc_mark_hook
10859 #define elf_backend_gc_sweep_hook ppc_elf_gc_sweep_hook
10860 #define elf_backend_section_from_shdr ppc_elf_section_from_shdr
10861 #define elf_backend_relocate_section ppc_elf_relocate_section
10862 #define elf_backend_create_dynamic_sections ppc_elf_create_dynamic_sections
10863 #define elf_backend_check_relocs ppc_elf_check_relocs
10864 #define elf_backend_copy_indirect_symbol ppc_elf_copy_indirect_symbol
10865 #define elf_backend_adjust_dynamic_symbol ppc_elf_adjust_dynamic_symbol
10866 #define elf_backend_add_symbol_hook ppc_elf_add_symbol_hook
10867 #define elf_backend_size_dynamic_sections ppc_elf_size_dynamic_sections
10868 #define elf_backend_hash_symbol ppc_elf_hash_symbol
10869 #define elf_backend_finish_dynamic_symbol ppc_elf_finish_dynamic_symbol
10870 #define elf_backend_finish_dynamic_sections ppc_elf_finish_dynamic_sections
10871 #define elf_backend_fake_sections ppc_elf_fake_sections
10872 #define elf_backend_additional_program_headers ppc_elf_additional_program_headers
10873 #define elf_backend_modify_segment_map ppc_elf_modify_segment_map
10874 #define elf_backend_grok_prstatus ppc_elf_grok_prstatus
10875 #define elf_backend_grok_psinfo ppc_elf_grok_psinfo
10876 #define elf_backend_write_core_note ppc_elf_write_core_note
10877 #define elf_backend_reloc_type_class ppc_elf_reloc_type_class
10878 #define elf_backend_begin_write_processing ppc_elf_begin_write_processing
10879 #define elf_backend_final_write_processing ppc_elf_final_write_processing
10880 #define elf_backend_write_section ppc_elf_write_section
10881 #define elf_backend_get_sec_type_attr ppc_elf_get_sec_type_attr
10882 #define elf_backend_plt_sym_val ppc_elf_plt_sym_val
10883 #define elf_backend_action_discarded ppc_elf_action_discarded
10884 #define elf_backend_init_index_section _bfd_elf_init_1_index_section
10885 #define elf_backend_lookup_section_flags_hook ppc_elf_lookup_section_flags
10886
10887 #include "elf32-target.h"
10888
10889 /* FreeBSD Target */
10890
10891 #undef TARGET_LITTLE_SYM
10892 #undef TARGET_LITTLE_NAME
10893
10894 #undef TARGET_BIG_SYM
10895 #define TARGET_BIG_SYM powerpc_elf32_fbsd_vec
10896 #undef TARGET_BIG_NAME
10897 #define TARGET_BIG_NAME "elf32-powerpc-freebsd"
10898
10899 #undef ELF_OSABI
10900 #define ELF_OSABI ELFOSABI_FREEBSD
10901
10902 #undef elf32_bed
10903 #define elf32_bed elf32_powerpc_fbsd_bed
10904
10905 #include "elf32-target.h"
10906
10907 /* VxWorks Target */
10908
10909 #undef TARGET_LITTLE_SYM
10910 #undef TARGET_LITTLE_NAME
10911
10912 #undef TARGET_BIG_SYM
10913 #define TARGET_BIG_SYM powerpc_elf32_vxworks_vec
10914 #undef TARGET_BIG_NAME
10915 #define TARGET_BIG_NAME "elf32-powerpc-vxworks"
10916
10917 #undef ELF_OSABI
10918
10919 /* VxWorks uses the elf default section flags for .plt. */
10920 static const struct bfd_elf_special_section *
10921 ppc_elf_vxworks_get_sec_type_attr (bfd *abfd ATTRIBUTE_UNUSED, asection *sec)
10922 {
10923 if (sec->name == NULL)
10924 return NULL;
10925
10926 if (strcmp (sec->name, ".plt") == 0)
10927 return _bfd_elf_get_sec_type_attr (abfd, sec);
10928
10929 return ppc_elf_get_sec_type_attr (abfd, sec);
10930 }
10931
10932 /* Like ppc_elf_link_hash_table_create, but overrides
10933 appropriately for VxWorks. */
10934 static struct bfd_link_hash_table *
10935 ppc_elf_vxworks_link_hash_table_create (bfd *abfd)
10936 {
10937 struct bfd_link_hash_table *ret;
10938
10939 ret = ppc_elf_link_hash_table_create (abfd);
10940 if (ret)
10941 {
10942 struct ppc_elf_link_hash_table *htab
10943 = (struct ppc_elf_link_hash_table *)ret;
10944 htab->is_vxworks = 1;
10945 htab->plt_type = PLT_VXWORKS;
10946 htab->plt_entry_size = VXWORKS_PLT_ENTRY_SIZE;
10947 htab->plt_slot_size = VXWORKS_PLT_ENTRY_SIZE;
10948 htab->plt_initial_entry_size = VXWORKS_PLT_INITIAL_ENTRY_SIZE;
10949 }
10950 return ret;
10951 }
10952
10953 /* Tweak magic VxWorks symbols as they are loaded. */
10954 static bfd_boolean
10955 ppc_elf_vxworks_add_symbol_hook (bfd *abfd,
10956 struct bfd_link_info *info,
10957 Elf_Internal_Sym *sym,
10958 const char **namep ATTRIBUTE_UNUSED,
10959 flagword *flagsp ATTRIBUTE_UNUSED,
10960 asection **secp,
10961 bfd_vma *valp)
10962 {
10963 if (!elf_vxworks_add_symbol_hook(abfd, info, sym,namep, flagsp, secp,
10964 valp))
10965 return FALSE;
10966
10967 return ppc_elf_add_symbol_hook(abfd, info, sym,namep, flagsp, secp, valp);
10968 }
10969
10970 static void
10971 ppc_elf_vxworks_final_write_processing (bfd *abfd, bfd_boolean linker)
10972 {
10973 ppc_elf_final_write_processing(abfd, linker);
10974 elf_vxworks_final_write_processing(abfd, linker);
10975 }
10976
10977 /* On VxWorks, we emit relocations against _PROCEDURE_LINKAGE_TABLE_, so
10978 define it. */
10979 #undef elf_backend_want_plt_sym
10980 #define elf_backend_want_plt_sym 1
10981 #undef elf_backend_want_got_plt
10982 #define elf_backend_want_got_plt 1
10983 #undef elf_backend_got_symbol_offset
10984 #define elf_backend_got_symbol_offset 0
10985 #undef elf_backend_plt_not_loaded
10986 #define elf_backend_plt_not_loaded 0
10987 #undef elf_backend_plt_readonly
10988 #define elf_backend_plt_readonly 1
10989 #undef elf_backend_got_header_size
10990 #define elf_backend_got_header_size 12
10991
10992 #undef bfd_elf32_get_synthetic_symtab
10993
10994 #undef bfd_elf32_bfd_link_hash_table_create
10995 #define bfd_elf32_bfd_link_hash_table_create \
10996 ppc_elf_vxworks_link_hash_table_create
10997 #undef elf_backend_add_symbol_hook
10998 #define elf_backend_add_symbol_hook \
10999 ppc_elf_vxworks_add_symbol_hook
11000 #undef elf_backend_link_output_symbol_hook
11001 #define elf_backend_link_output_symbol_hook \
11002 elf_vxworks_link_output_symbol_hook
11003 #undef elf_backend_final_write_processing
11004 #define elf_backend_final_write_processing \
11005 ppc_elf_vxworks_final_write_processing
11006 #undef elf_backend_get_sec_type_attr
11007 #define elf_backend_get_sec_type_attr \
11008 ppc_elf_vxworks_get_sec_type_attr
11009 #undef elf_backend_emit_relocs
11010 #define elf_backend_emit_relocs \
11011 elf_vxworks_emit_relocs
11012
11013 #undef elf32_bed
11014 #define elf32_bed ppc_elf_vxworks_bed
11015 #undef elf_backend_post_process_headers
11016
11017 #include "elf32-target.h"
GDB Binutils - Deliverables
This page took 0.282598 seconds and 5 git commands to generate.