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gas: detect DCTI couples in sparc
[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 thru */
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 thru */
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
4657 /* Merge object attributes from IBFD into OBFD. Raise an error if
4658 there are conflicting attributes. */
4659 static bfd_boolean
4660 ppc_elf_merge_obj_attributes (bfd *ibfd, bfd *obfd)
4661 {
4662 obj_attribute *in_attr, *in_attrs;
4663 obj_attribute *out_attr, *out_attrs;
4664
4665 if (!elf_known_obj_attributes_proc (obfd)[0].i)
4666 {
4667 /* This is the first object. Copy the attributes. */
4668 _bfd_elf_copy_obj_attributes (ibfd, obfd);
4669
4670 /* Use the Tag_null value to indicate the attributes have been
4671 initialized. */
4672 elf_known_obj_attributes_proc (obfd)[0].i = 1;
4673
4674 return TRUE;
4675 }
4676
4677 in_attrs = elf_known_obj_attributes (ibfd)[OBJ_ATTR_GNU];
4678 out_attrs = elf_known_obj_attributes (obfd)[OBJ_ATTR_GNU];
4679
4680 /* Check for conflicting Tag_GNU_Power_ABI_FP attributes and merge
4681 non-conflicting ones. */
4682 in_attr = &in_attrs[Tag_GNU_Power_ABI_FP];
4683 out_attr = &out_attrs[Tag_GNU_Power_ABI_FP];
4684 if (in_attr->i != out_attr->i)
4685 {
4686 out_attr->type = 1;
4687 if (out_attr->i == 0)
4688 out_attr->i = in_attr->i;
4689 else if (in_attr->i == 0)
4690 ;
4691 else if (out_attr->i == 1 && in_attr->i == 2)
4692 _bfd_error_handler
4693 (_("Warning: %B uses hard float, %B uses soft float"), obfd, ibfd);
4694 else if (out_attr->i == 1 && in_attr->i == 3)
4695 _bfd_error_handler
4696 (_("Warning: %B uses double-precision hard float, %B uses single-precision hard float"),
4697 obfd, ibfd);
4698 else if (out_attr->i == 3 && in_attr->i == 1)
4699 _bfd_error_handler
4700 (_("Warning: %B uses double-precision hard float, %B uses single-precision hard float"),
4701 ibfd, obfd);
4702 else if (out_attr->i == 3 && in_attr->i == 2)
4703 _bfd_error_handler
4704 (_("Warning: %B uses soft float, %B uses single-precision hard float"),
4705 ibfd, obfd);
4706 else if (out_attr->i == 2 && (in_attr->i == 1 || in_attr->i == 3))
4707 _bfd_error_handler
4708 (_("Warning: %B uses hard float, %B uses soft float"), ibfd, obfd);
4709 else if (in_attr->i > 3)
4710 _bfd_error_handler
4711 (_("Warning: %B uses unknown floating point ABI %d"), ibfd,
4712 in_attr->i);
4713 else
4714 _bfd_error_handler
4715 (_("Warning: %B uses unknown floating point ABI %d"), obfd,
4716 out_attr->i);
4717 }
4718
4719 /* Check for conflicting Tag_GNU_Power_ABI_Vector attributes and
4720 merge non-conflicting ones. */
4721 in_attr = &in_attrs[Tag_GNU_Power_ABI_Vector];
4722 out_attr = &out_attrs[Tag_GNU_Power_ABI_Vector];
4723 if (in_attr->i != out_attr->i)
4724 {
4725 const char *in_abi = NULL, *out_abi = NULL;
4726
4727 switch (in_attr->i)
4728 {
4729 case 1: in_abi = "generic"; break;
4730 case 2: in_abi = "AltiVec"; break;
4731 case 3: in_abi = "SPE"; break;
4732 }
4733
4734 switch (out_attr->i)
4735 {
4736 case 1: out_abi = "generic"; break;
4737 case 2: out_abi = "AltiVec"; break;
4738 case 3: out_abi = "SPE"; break;
4739 }
4740
4741 out_attr->type = 1;
4742 if (out_attr->i == 0)
4743 out_attr->i = in_attr->i;
4744 else if (in_attr->i == 0)
4745 ;
4746 /* For now, allow generic to transition to AltiVec or SPE
4747 without a warning. If GCC marked files with their stack
4748 alignment and used don't-care markings for files which are
4749 not affected by the vector ABI, we could warn about this
4750 case too. */
4751 else if (out_attr->i == 1)
4752 out_attr->i = in_attr->i;
4753 else if (in_attr->i == 1)
4754 ;
4755 else if (in_abi == NULL)
4756 _bfd_error_handler
4757 (_("Warning: %B uses unknown vector ABI %d"), ibfd,
4758 in_attr->i);
4759 else if (out_abi == NULL)
4760 _bfd_error_handler
4761 (_("Warning: %B uses unknown vector ABI %d"), obfd,
4762 in_attr->i);
4763 else
4764 _bfd_error_handler
4765 (_("Warning: %B uses vector ABI \"%s\", %B uses \"%s\""),
4766 ibfd, obfd, in_abi, out_abi);
4767 }
4768
4769 /* Check for conflicting Tag_GNU_Power_ABI_Struct_Return attributes
4770 and merge non-conflicting ones. */
4771 in_attr = &in_attrs[Tag_GNU_Power_ABI_Struct_Return];
4772 out_attr = &out_attrs[Tag_GNU_Power_ABI_Struct_Return];
4773 if (in_attr->i != out_attr->i)
4774 {
4775 out_attr->type = 1;
4776 if (out_attr->i == 0)
4777 out_attr->i = in_attr->i;
4778 else if (in_attr->i == 0)
4779 ;
4780 else if (out_attr->i == 1 && in_attr->i == 2)
4781 _bfd_error_handler
4782 (_("Warning: %B uses r3/r4 for small structure returns, %B uses memory"), obfd, ibfd);
4783 else if (out_attr->i == 2 && in_attr->i == 1)
4784 _bfd_error_handler
4785 (_("Warning: %B uses r3/r4 for small structure returns, %B uses memory"), ibfd, obfd);
4786 else if (in_attr->i > 2)
4787 _bfd_error_handler
4788 (_("Warning: %B uses unknown small structure return convention %d"), ibfd,
4789 in_attr->i);
4790 else
4791 _bfd_error_handler
4792 (_("Warning: %B uses unknown small structure return convention %d"), obfd,
4793 out_attr->i);
4794 }
4795
4796 /* Merge Tag_compatibility attributes and any common GNU ones. */
4797 _bfd_elf_merge_object_attributes (ibfd, obfd);
4798
4799 return TRUE;
4800 }
4801
4802 /* Merge backend specific data from an object file to the output
4803 object file when linking. */
4804
4805 static bfd_boolean
4806 ppc_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
4807 {
4808 flagword old_flags;
4809 flagword new_flags;
4810 bfd_boolean error;
4811
4812 if (!is_ppc_elf (ibfd) || !is_ppc_elf (obfd))
4813 return TRUE;
4814
4815 /* Check if we have the same endianness. */
4816 if (! _bfd_generic_verify_endian_match (ibfd, obfd))
4817 return FALSE;
4818
4819 if (!ppc_elf_merge_obj_attributes (ibfd, obfd))
4820 return FALSE;
4821
4822 new_flags = elf_elfheader (ibfd)->e_flags;
4823 old_flags = elf_elfheader (obfd)->e_flags;
4824 if (!elf_flags_init (obfd))
4825 {
4826 /* First call, no flags set. */
4827 elf_flags_init (obfd) = TRUE;
4828 elf_elfheader (obfd)->e_flags = new_flags;
4829 }
4830
4831 /* Compatible flags are ok. */
4832 else if (new_flags == old_flags)
4833 ;
4834
4835 /* Incompatible flags. */
4836 else
4837 {
4838 /* Warn about -mrelocatable mismatch. Allow -mrelocatable-lib
4839 to be linked with either. */
4840 error = FALSE;
4841 if ((new_flags & EF_PPC_RELOCATABLE) != 0
4842 && (old_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0)
4843 {
4844 error = TRUE;
4845 (*_bfd_error_handler)
4846 (_("%B: compiled with -mrelocatable and linked with "
4847 "modules compiled normally"), ibfd);
4848 }
4849 else if ((new_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0
4850 && (old_flags & EF_PPC_RELOCATABLE) != 0)
4851 {
4852 error = TRUE;
4853 (*_bfd_error_handler)
4854 (_("%B: compiled normally and linked with "
4855 "modules compiled with -mrelocatable"), ibfd);
4856 }
4857
4858 /* The output is -mrelocatable-lib iff both the input files are. */
4859 if (! (new_flags & EF_PPC_RELOCATABLE_LIB))
4860 elf_elfheader (obfd)->e_flags &= ~EF_PPC_RELOCATABLE_LIB;
4861
4862 /* The output is -mrelocatable iff it can't be -mrelocatable-lib,
4863 but each input file is either -mrelocatable or -mrelocatable-lib. */
4864 if (! (elf_elfheader (obfd)->e_flags & EF_PPC_RELOCATABLE_LIB)
4865 && (new_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE))
4866 && (old_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE)))
4867 elf_elfheader (obfd)->e_flags |= EF_PPC_RELOCATABLE;
4868
4869 /* Do not warn about eabi vs. V.4 mismatch, just or in the bit if
4870 any module uses it. */
4871 elf_elfheader (obfd)->e_flags |= (new_flags & EF_PPC_EMB);
4872
4873 new_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
4874 old_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
4875
4876 /* Warn about any other mismatches. */
4877 if (new_flags != old_flags)
4878 {
4879 error = TRUE;
4880 (*_bfd_error_handler)
4881 (_("%B: uses different e_flags (0x%lx) fields "
4882 "than previous modules (0x%lx)"),
4883 ibfd, (long) new_flags, (long) old_flags);
4884 }
4885
4886 if (error)
4887 {
4888 bfd_set_error (bfd_error_bad_value);
4889 return FALSE;
4890 }
4891 }
4892
4893 return TRUE;
4894 }
4895
4896 static void
4897 ppc_elf_vle_split16 (bfd *output_bfd, bfd_byte *loc,
4898 bfd_vma value,
4899 split16_format_type split16_format)
4900
4901 {
4902 unsigned int insn, top5;
4903
4904 insn = bfd_get_32 (output_bfd, loc);
4905 top5 = value & 0xf800;
4906 top5 = top5 << (split16_format == split16a_type ? 9 : 5);
4907 insn &= (split16_format == split16a_type ? ~0x1f007ff : ~0x1f07ff);
4908 insn |= top5;
4909 insn |= value & 0x7ff;
4910 bfd_put_32 (output_bfd, insn, loc);
4911 }
4912
4913 \f
4914 /* Choose which PLT scheme to use, and set .plt flags appropriately.
4915 Returns -1 on error, 0 for old PLT, 1 for new PLT. */
4916 int
4917 ppc_elf_select_plt_layout (bfd *output_bfd ATTRIBUTE_UNUSED,
4918 struct bfd_link_info *info)
4919 {
4920 struct ppc_elf_link_hash_table *htab;
4921 flagword flags;
4922
4923 htab = ppc_elf_hash_table (info);
4924
4925 if (htab->plt_type == PLT_UNSET)
4926 {
4927 struct elf_link_hash_entry *h;
4928
4929 if (htab->params->plt_style == PLT_OLD)
4930 htab->plt_type = PLT_OLD;
4931 else if (bfd_link_pic (info)
4932 && htab->elf.dynamic_sections_created
4933 && (h = elf_link_hash_lookup (&htab->elf, "_mcount",
4934 FALSE, FALSE, TRUE)) != NULL
4935 && (h->type == STT_FUNC
4936 || h->needs_plt)
4937 && h->ref_regular
4938 && !(SYMBOL_CALLS_LOCAL (info, h)
4939 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
4940 && h->root.type == bfd_link_hash_undefweak)))
4941 {
4942 /* Profiling of shared libs (and pies) is not supported with
4943 secure plt, because ppc32 does profiling before a
4944 function prologue and a secure plt pic call stubs needs
4945 r30 to be set up. */
4946 htab->plt_type = PLT_OLD;
4947 }
4948 else
4949 {
4950 bfd *ibfd;
4951 enum ppc_elf_plt_type plt_type = htab->params->plt_style;
4952
4953 /* Look through the reloc flags left by ppc_elf_check_relocs.
4954 Use the old style bss plt if a file makes plt calls
4955 without using the new relocs, and if ld isn't given
4956 --secure-plt and we never see REL16 relocs. */
4957 if (plt_type == PLT_UNSET)
4958 plt_type = PLT_OLD;
4959 for (ibfd = info->input_bfds; ibfd; ibfd = ibfd->link.next)
4960 if (is_ppc_elf (ibfd))
4961 {
4962 if (ppc_elf_tdata (ibfd)->has_rel16)
4963 plt_type = PLT_NEW;
4964 else if (ppc_elf_tdata (ibfd)->makes_plt_call)
4965 {
4966 plt_type = PLT_OLD;
4967 htab->old_bfd = ibfd;
4968 break;
4969 }
4970 }
4971 htab->plt_type = plt_type;
4972 }
4973 }
4974 if (htab->plt_type == PLT_OLD && htab->params->plt_style == PLT_NEW)
4975 {
4976 if (htab->old_bfd != NULL)
4977 info->callbacks->einfo (_("%P: bss-plt forced due to %B\n"),
4978 htab->old_bfd);
4979 else
4980 info->callbacks->einfo (_("%P: bss-plt forced by profiling\n"));
4981 }
4982
4983 BFD_ASSERT (htab->plt_type != PLT_VXWORKS);
4984
4985 if (htab->plt_type == PLT_NEW)
4986 {
4987 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
4988 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4989
4990 /* The new PLT is a loaded section. */
4991 if (htab->plt != NULL
4992 && !bfd_set_section_flags (htab->elf.dynobj, htab->plt, flags))
4993 return -1;
4994
4995 /* The new GOT is not executable. */
4996 if (htab->got != NULL
4997 && !bfd_set_section_flags (htab->elf.dynobj, htab->got, flags))
4998 return -1;
4999 }
5000 else
5001 {
5002 /* Stop an unused .glink section from affecting .text alignment. */
5003 if (htab->glink != NULL
5004 && !bfd_set_section_alignment (htab->elf.dynobj, htab->glink, 0))
5005 return -1;
5006 }
5007 return htab->plt_type == PLT_NEW;
5008 }
5009 \f
5010 /* Return the section that should be marked against GC for a given
5011 relocation. */
5012
5013 static asection *
5014 ppc_elf_gc_mark_hook (asection *sec,
5015 struct bfd_link_info *info,
5016 Elf_Internal_Rela *rel,
5017 struct elf_link_hash_entry *h,
5018 Elf_Internal_Sym *sym)
5019 {
5020 if (h != NULL)
5021 switch (ELF32_R_TYPE (rel->r_info))
5022 {
5023 case R_PPC_GNU_VTINHERIT:
5024 case R_PPC_GNU_VTENTRY:
5025 return NULL;
5026 }
5027
5028 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
5029 }
5030
5031 /* Update the got, plt and dynamic reloc reference counts for the
5032 section being removed. */
5033
5034 static bfd_boolean
5035 ppc_elf_gc_sweep_hook (bfd *abfd,
5036 struct bfd_link_info *info,
5037 asection *sec,
5038 const Elf_Internal_Rela *relocs)
5039 {
5040 struct ppc_elf_link_hash_table *htab;
5041 Elf_Internal_Shdr *symtab_hdr;
5042 struct elf_link_hash_entry **sym_hashes;
5043 bfd_signed_vma *local_got_refcounts;
5044 const Elf_Internal_Rela *rel, *relend;
5045 asection *got2;
5046
5047 if (bfd_link_relocatable (info))
5048 return TRUE;
5049
5050 if ((sec->flags & SEC_ALLOC) == 0)
5051 return TRUE;
5052
5053 elf_section_data (sec)->local_dynrel = NULL;
5054
5055 htab = ppc_elf_hash_table (info);
5056 symtab_hdr = &elf_symtab_hdr (abfd);
5057 sym_hashes = elf_sym_hashes (abfd);
5058 local_got_refcounts = elf_local_got_refcounts (abfd);
5059 got2 = bfd_get_section_by_name (abfd, ".got2");
5060
5061 relend = relocs + sec->reloc_count;
5062 for (rel = relocs; rel < relend; rel++)
5063 {
5064 unsigned long r_symndx;
5065 enum elf_ppc_reloc_type r_type;
5066 struct elf_link_hash_entry *h = NULL;
5067
5068 r_symndx = ELF32_R_SYM (rel->r_info);
5069 if (r_symndx >= symtab_hdr->sh_info)
5070 {
5071 struct elf_dyn_relocs **pp, *p;
5072 struct ppc_elf_link_hash_entry *eh;
5073
5074 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5075 while (h->root.type == bfd_link_hash_indirect
5076 || h->root.type == bfd_link_hash_warning)
5077 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5078 eh = (struct ppc_elf_link_hash_entry *) h;
5079
5080 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
5081 if (p->sec == sec)
5082 {
5083 /* Everything must go for SEC. */
5084 *pp = p->next;
5085 break;
5086 }
5087 }
5088
5089 r_type = ELF32_R_TYPE (rel->r_info);
5090 if (!htab->is_vxworks
5091 && h == NULL
5092 && local_got_refcounts != NULL
5093 && (!bfd_link_pic (info)
5094 || is_branch_reloc (r_type)))
5095 {
5096 struct plt_entry **local_plt = (struct plt_entry **)
5097 (local_got_refcounts + symtab_hdr->sh_info);
5098 char *local_got_tls_masks = (char *)
5099 (local_plt + symtab_hdr->sh_info);
5100 if ((local_got_tls_masks[r_symndx] & PLT_IFUNC) != 0)
5101 {
5102 struct plt_entry **ifunc = local_plt + r_symndx;
5103 bfd_vma addend = 0;
5104 struct plt_entry *ent;
5105
5106 if (r_type == R_PPC_PLTREL24 && bfd_link_pic (info))
5107 addend = rel->r_addend;
5108 ent = find_plt_ent (ifunc, got2, addend);
5109 if (ent->plt.refcount > 0)
5110 ent->plt.refcount -= 1;
5111 continue;
5112 }
5113 }
5114
5115 switch (r_type)
5116 {
5117 case R_PPC_GOT_TLSLD16:
5118 case R_PPC_GOT_TLSLD16_LO:
5119 case R_PPC_GOT_TLSLD16_HI:
5120 case R_PPC_GOT_TLSLD16_HA:
5121 case R_PPC_GOT_TLSGD16:
5122 case R_PPC_GOT_TLSGD16_LO:
5123 case R_PPC_GOT_TLSGD16_HI:
5124 case R_PPC_GOT_TLSGD16_HA:
5125 case R_PPC_GOT_TPREL16:
5126 case R_PPC_GOT_TPREL16_LO:
5127 case R_PPC_GOT_TPREL16_HI:
5128 case R_PPC_GOT_TPREL16_HA:
5129 case R_PPC_GOT_DTPREL16:
5130 case R_PPC_GOT_DTPREL16_LO:
5131 case R_PPC_GOT_DTPREL16_HI:
5132 case R_PPC_GOT_DTPREL16_HA:
5133 case R_PPC_GOT16:
5134 case R_PPC_GOT16_LO:
5135 case R_PPC_GOT16_HI:
5136 case R_PPC_GOT16_HA:
5137 if (h != NULL)
5138 {
5139 if (h->got.refcount > 0)
5140 h->got.refcount--;
5141 if (!bfd_link_pic (info))
5142 {
5143 struct plt_entry *ent;
5144
5145 ent = find_plt_ent (&h->plt.plist, NULL, 0);
5146 if (ent != NULL && ent->plt.refcount > 0)
5147 ent->plt.refcount -= 1;
5148 }
5149 }
5150 else if (local_got_refcounts != NULL)
5151 {
5152 if (local_got_refcounts[r_symndx] > 0)
5153 local_got_refcounts[r_symndx]--;
5154 }
5155 break;
5156
5157 case R_PPC_REL24:
5158 case R_PPC_REL14:
5159 case R_PPC_REL14_BRTAKEN:
5160 case R_PPC_REL14_BRNTAKEN:
5161 case R_PPC_REL32:
5162 if (h == NULL || h == htab->elf.hgot)
5163 break;
5164 /* Fall thru */
5165
5166 case R_PPC_ADDR32:
5167 case R_PPC_ADDR24:
5168 case R_PPC_ADDR16:
5169 case R_PPC_ADDR16_LO:
5170 case R_PPC_ADDR16_HI:
5171 case R_PPC_ADDR16_HA:
5172 case R_PPC_ADDR14:
5173 case R_PPC_ADDR14_BRTAKEN:
5174 case R_PPC_ADDR14_BRNTAKEN:
5175 case R_PPC_UADDR32:
5176 case R_PPC_UADDR16:
5177 if (bfd_link_pic (info))
5178 break;
5179
5180 case R_PPC_PLT32:
5181 case R_PPC_PLTREL24:
5182 case R_PPC_PLTREL32:
5183 case R_PPC_PLT16_LO:
5184 case R_PPC_PLT16_HI:
5185 case R_PPC_PLT16_HA:
5186 if (h != NULL)
5187 {
5188 bfd_vma addend = 0;
5189 struct plt_entry *ent;
5190
5191 if (r_type == R_PPC_PLTREL24 && bfd_link_pic (info))
5192 addend = rel->r_addend;
5193 ent = find_plt_ent (&h->plt.plist, got2, addend);
5194 if (ent != NULL && ent->plt.refcount > 0)
5195 ent->plt.refcount -= 1;
5196 }
5197 break;
5198
5199 default:
5200 break;
5201 }
5202 }
5203 return TRUE;
5204 }
5205 \f
5206 /* Set plt output section type, htab->tls_get_addr, and call the
5207 generic ELF tls_setup function. */
5208
5209 asection *
5210 ppc_elf_tls_setup (bfd *obfd, struct bfd_link_info *info)
5211 {
5212 struct ppc_elf_link_hash_table *htab;
5213
5214 htab = ppc_elf_hash_table (info);
5215 htab->tls_get_addr = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
5216 FALSE, FALSE, TRUE);
5217 if (htab->plt_type != PLT_NEW)
5218 htab->params->no_tls_get_addr_opt = TRUE;
5219
5220 if (!htab->params->no_tls_get_addr_opt)
5221 {
5222 struct elf_link_hash_entry *opt, *tga;
5223 opt = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_opt",
5224 FALSE, FALSE, TRUE);
5225 if (opt != NULL
5226 && (opt->root.type == bfd_link_hash_defined
5227 || opt->root.type == bfd_link_hash_defweak))
5228 {
5229 /* If glibc supports an optimized __tls_get_addr call stub,
5230 signalled by the presence of __tls_get_addr_opt, and we'll
5231 be calling __tls_get_addr via a plt call stub, then
5232 make __tls_get_addr point to __tls_get_addr_opt. */
5233 tga = htab->tls_get_addr;
5234 if (htab->elf.dynamic_sections_created
5235 && tga != NULL
5236 && (tga->type == STT_FUNC
5237 || tga->needs_plt)
5238 && !(SYMBOL_CALLS_LOCAL (info, tga)
5239 || (ELF_ST_VISIBILITY (tga->other) != STV_DEFAULT
5240 && tga->root.type == bfd_link_hash_undefweak)))
5241 {
5242 struct plt_entry *ent;
5243 for (ent = tga->plt.plist; ent != NULL; ent = ent->next)
5244 if (ent->plt.refcount > 0)
5245 break;
5246 if (ent != NULL)
5247 {
5248 tga->root.type = bfd_link_hash_indirect;
5249 tga->root.u.i.link = &opt->root;
5250 ppc_elf_copy_indirect_symbol (info, opt, tga);
5251 opt->forced_local = 0;
5252 if (opt->dynindx != -1)
5253 {
5254 /* Use __tls_get_addr_opt in dynamic relocations. */
5255 opt->dynindx = -1;
5256 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
5257 opt->dynstr_index);
5258 if (!bfd_elf_link_record_dynamic_symbol (info, opt))
5259 return FALSE;
5260 }
5261 htab->tls_get_addr = opt;
5262 }
5263 }
5264 }
5265 else
5266 htab->params->no_tls_get_addr_opt = TRUE;
5267 }
5268 if (htab->plt_type == PLT_NEW
5269 && htab->plt != NULL
5270 && htab->plt->output_section != NULL)
5271 {
5272 elf_section_type (htab->plt->output_section) = SHT_PROGBITS;
5273 elf_section_flags (htab->plt->output_section) = SHF_ALLOC + SHF_WRITE;
5274 }
5275
5276 return _bfd_elf_tls_setup (obfd, info);
5277 }
5278
5279 /* Return TRUE iff REL is a branch reloc with a global symbol matching
5280 HASH. */
5281
5282 static bfd_boolean
5283 branch_reloc_hash_match (const bfd *ibfd,
5284 const Elf_Internal_Rela *rel,
5285 const struct elf_link_hash_entry *hash)
5286 {
5287 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
5288 enum elf_ppc_reloc_type r_type = ELF32_R_TYPE (rel->r_info);
5289 unsigned int r_symndx = ELF32_R_SYM (rel->r_info);
5290
5291 if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type))
5292 {
5293 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
5294 struct elf_link_hash_entry *h;
5295
5296 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5297 while (h->root.type == bfd_link_hash_indirect
5298 || h->root.type == bfd_link_hash_warning)
5299 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5300 if (h == hash)
5301 return TRUE;
5302 }
5303 return FALSE;
5304 }
5305
5306 /* Run through all the TLS relocs looking for optimization
5307 opportunities. */
5308
5309 bfd_boolean
5310 ppc_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED,
5311 struct bfd_link_info *info)
5312 {
5313 bfd *ibfd;
5314 asection *sec;
5315 struct ppc_elf_link_hash_table *htab;
5316 int pass;
5317
5318 if (!bfd_link_executable (info))
5319 return TRUE;
5320
5321 htab = ppc_elf_hash_table (info);
5322 if (htab == NULL)
5323 return FALSE;
5324
5325 /* Make two passes through the relocs. First time check that tls
5326 relocs involved in setting up a tls_get_addr call are indeed
5327 followed by such a call. If they are not, don't do any tls
5328 optimization. On the second pass twiddle tls_mask flags to
5329 notify relocate_section that optimization can be done, and
5330 adjust got and plt refcounts. */
5331 for (pass = 0; pass < 2; ++pass)
5332 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
5333 {
5334 Elf_Internal_Sym *locsyms = NULL;
5335 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
5336 asection *got2 = bfd_get_section_by_name (ibfd, ".got2");
5337
5338 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
5339 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
5340 {
5341 Elf_Internal_Rela *relstart, *rel, *relend;
5342 int expecting_tls_get_addr = 0;
5343
5344 /* Read the relocations. */
5345 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
5346 info->keep_memory);
5347 if (relstart == NULL)
5348 return FALSE;
5349
5350 relend = relstart + sec->reloc_count;
5351 for (rel = relstart; rel < relend; rel++)
5352 {
5353 enum elf_ppc_reloc_type r_type;
5354 unsigned long r_symndx;
5355 struct elf_link_hash_entry *h = NULL;
5356 char *tls_mask;
5357 char tls_set, tls_clear;
5358 bfd_boolean is_local;
5359 bfd_signed_vma *got_count;
5360
5361 r_symndx = ELF32_R_SYM (rel->r_info);
5362 if (r_symndx >= symtab_hdr->sh_info)
5363 {
5364 struct elf_link_hash_entry **sym_hashes;
5365
5366 sym_hashes = elf_sym_hashes (ibfd);
5367 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5368 while (h->root.type == bfd_link_hash_indirect
5369 || h->root.type == bfd_link_hash_warning)
5370 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5371 }
5372
5373 is_local = FALSE;
5374 if (h == NULL
5375 || !h->def_dynamic)
5376 is_local = TRUE;
5377
5378 r_type = ELF32_R_TYPE (rel->r_info);
5379 /* If this section has old-style __tls_get_addr calls
5380 without marker relocs, then check that each
5381 __tls_get_addr call reloc is preceded by a reloc
5382 that conceivably belongs to the __tls_get_addr arg
5383 setup insn. If we don't find matching arg setup
5384 relocs, don't do any tls optimization. */
5385 if (pass == 0
5386 && sec->has_tls_get_addr_call
5387 && h != NULL
5388 && h == htab->tls_get_addr
5389 && !expecting_tls_get_addr
5390 && is_branch_reloc (r_type))
5391 {
5392 info->callbacks->minfo ("%H __tls_get_addr lost arg, "
5393 "TLS optimization disabled\n",
5394 ibfd, sec, rel->r_offset);
5395 if (elf_section_data (sec)->relocs != relstart)
5396 free (relstart);
5397 return TRUE;
5398 }
5399
5400 expecting_tls_get_addr = 0;
5401 switch (r_type)
5402 {
5403 case R_PPC_GOT_TLSLD16:
5404 case R_PPC_GOT_TLSLD16_LO:
5405 expecting_tls_get_addr = 1;
5406 /* Fall thru */
5407
5408 case R_PPC_GOT_TLSLD16_HI:
5409 case R_PPC_GOT_TLSLD16_HA:
5410 /* These relocs should never be against a symbol
5411 defined in a shared lib. Leave them alone if
5412 that turns out to be the case. */
5413 if (!is_local)
5414 continue;
5415
5416 /* LD -> LE */
5417 tls_set = 0;
5418 tls_clear = TLS_LD;
5419 break;
5420
5421 case R_PPC_GOT_TLSGD16:
5422 case R_PPC_GOT_TLSGD16_LO:
5423 expecting_tls_get_addr = 1;
5424 /* Fall thru */
5425
5426 case R_PPC_GOT_TLSGD16_HI:
5427 case R_PPC_GOT_TLSGD16_HA:
5428 if (is_local)
5429 /* GD -> LE */
5430 tls_set = 0;
5431 else
5432 /* GD -> IE */
5433 tls_set = TLS_TLS | TLS_TPRELGD;
5434 tls_clear = TLS_GD;
5435 break;
5436
5437 case R_PPC_GOT_TPREL16:
5438 case R_PPC_GOT_TPREL16_LO:
5439 case R_PPC_GOT_TPREL16_HI:
5440 case R_PPC_GOT_TPREL16_HA:
5441 if (is_local)
5442 {
5443 /* IE -> LE */
5444 tls_set = 0;
5445 tls_clear = TLS_TPREL;
5446 break;
5447 }
5448 else
5449 continue;
5450
5451 case R_PPC_TLSGD:
5452 case R_PPC_TLSLD:
5453 expecting_tls_get_addr = 2;
5454 tls_set = 0;
5455 tls_clear = 0;
5456 break;
5457
5458 default:
5459 continue;
5460 }
5461
5462 if (pass == 0)
5463 {
5464 if (!expecting_tls_get_addr
5465 || (expecting_tls_get_addr == 1
5466 && !sec->has_tls_get_addr_call))
5467 continue;
5468
5469 if (rel + 1 < relend
5470 && branch_reloc_hash_match (ibfd, rel + 1,
5471 htab->tls_get_addr))
5472 continue;
5473
5474 /* Uh oh, we didn't find the expected call. We
5475 could just mark this symbol to exclude it
5476 from tls optimization but it's safer to skip
5477 the entire optimization. */
5478 info->callbacks->minfo (_("%H arg lost __tls_get_addr, "
5479 "TLS optimization disabled\n"),
5480 ibfd, sec, rel->r_offset);
5481 if (elf_section_data (sec)->relocs != relstart)
5482 free (relstart);
5483 return TRUE;
5484 }
5485
5486 if (expecting_tls_get_addr)
5487 {
5488 struct plt_entry *ent;
5489 bfd_vma addend = 0;
5490
5491 if (bfd_link_pic (info)
5492 && ELF32_R_TYPE (rel[1].r_info) == R_PPC_PLTREL24)
5493 addend = rel[1].r_addend;
5494 ent = find_plt_ent (&htab->tls_get_addr->plt.plist,
5495 got2, addend);
5496 if (ent != NULL && ent->plt.refcount > 0)
5497 ent->plt.refcount -= 1;
5498
5499 if (expecting_tls_get_addr == 2)
5500 continue;
5501 }
5502
5503 if (h != NULL)
5504 {
5505 tls_mask = &ppc_elf_hash_entry (h)->tls_mask;
5506 got_count = &h->got.refcount;
5507 }
5508 else
5509 {
5510 bfd_signed_vma *lgot_refs;
5511 struct plt_entry **local_plt;
5512 char *lgot_masks;
5513
5514 if (locsyms == NULL)
5515 {
5516 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
5517 if (locsyms == NULL)
5518 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
5519 symtab_hdr->sh_info,
5520 0, NULL, NULL, NULL);
5521 if (locsyms == NULL)
5522 {
5523 if (elf_section_data (sec)->relocs != relstart)
5524 free (relstart);
5525 return FALSE;
5526 }
5527 }
5528 lgot_refs = elf_local_got_refcounts (ibfd);
5529 if (lgot_refs == NULL)
5530 abort ();
5531 local_plt = (struct plt_entry **)
5532 (lgot_refs + symtab_hdr->sh_info);
5533 lgot_masks = (char *) (local_plt + symtab_hdr->sh_info);
5534 tls_mask = &lgot_masks[r_symndx];
5535 got_count = &lgot_refs[r_symndx];
5536 }
5537
5538 if (tls_set == 0)
5539 {
5540 /* We managed to get rid of a got entry. */
5541 if (*got_count > 0)
5542 *got_count -= 1;
5543 }
5544
5545 *tls_mask |= tls_set;
5546 *tls_mask &= ~tls_clear;
5547 }
5548
5549 if (elf_section_data (sec)->relocs != relstart)
5550 free (relstart);
5551 }
5552
5553 if (locsyms != NULL
5554 && (symtab_hdr->contents != (unsigned char *) locsyms))
5555 {
5556 if (!info->keep_memory)
5557 free (locsyms);
5558 else
5559 symtab_hdr->contents = (unsigned char *) locsyms;
5560 }
5561 }
5562 return TRUE;
5563 }
5564 \f
5565 /* Return true if we have dynamic relocs that apply to read-only sections. */
5566
5567 static bfd_boolean
5568 readonly_dynrelocs (struct elf_link_hash_entry *h)
5569 {
5570 struct elf_dyn_relocs *p;
5571
5572 for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next)
5573 {
5574 asection *s = p->sec->output_section;
5575
5576 if (s != NULL
5577 && ((s->flags & (SEC_READONLY | SEC_ALLOC))
5578 == (SEC_READONLY | SEC_ALLOC)))
5579 return TRUE;
5580 }
5581 return FALSE;
5582 }
5583
5584 /* Adjust a symbol defined by a dynamic object and referenced by a
5585 regular object. The current definition is in some section of the
5586 dynamic object, but we're not including those sections. We have to
5587 change the definition to something the rest of the link can
5588 understand. */
5589
5590 static bfd_boolean
5591 ppc_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
5592 struct elf_link_hash_entry *h)
5593 {
5594 struct ppc_elf_link_hash_table *htab;
5595 asection *s;
5596
5597 #ifdef DEBUG
5598 fprintf (stderr, "ppc_elf_adjust_dynamic_symbol called for %s\n",
5599 h->root.root.string);
5600 #endif
5601
5602 /* Make sure we know what is going on here. */
5603 htab = ppc_elf_hash_table (info);
5604 BFD_ASSERT (htab->elf.dynobj != NULL
5605 && (h->needs_plt
5606 || h->type == STT_GNU_IFUNC
5607 || h->u.weakdef != NULL
5608 || (h->def_dynamic
5609 && h->ref_regular
5610 && !h->def_regular)));
5611
5612 /* Deal with function syms. */
5613 if (h->type == STT_FUNC
5614 || h->type == STT_GNU_IFUNC
5615 || h->needs_plt)
5616 {
5617 /* Clear procedure linkage table information for any symbol that
5618 won't need a .plt entry. */
5619 struct plt_entry *ent;
5620 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
5621 if (ent->plt.refcount > 0)
5622 break;
5623 if (ent == NULL
5624 || (h->type != STT_GNU_IFUNC
5625 && (SYMBOL_CALLS_LOCAL (info, h)
5626 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
5627 && h->root.type == bfd_link_hash_undefweak))))
5628 {
5629 /* A PLT entry is not required/allowed when:
5630
5631 1. We are not using ld.so; because then the PLT entry
5632 can't be set up, so we can't use one. In this case,
5633 ppc_elf_adjust_dynamic_symbol won't even be called.
5634
5635 2. GC has rendered the entry unused.
5636
5637 3. We know for certain that a call to this symbol
5638 will go to this object, or will remain undefined. */
5639 h->plt.plist = NULL;
5640 h->needs_plt = 0;
5641 h->pointer_equality_needed = 0;
5642 }
5643 else
5644 {
5645 /* Taking a function's address in a read/write section
5646 doesn't require us to define the function symbol in the
5647 executable on a plt call stub. A dynamic reloc can
5648 be used instead. */
5649 if (h->pointer_equality_needed
5650 && h->type != STT_GNU_IFUNC
5651 && !htab->is_vxworks
5652 && !ppc_elf_hash_entry (h)->has_sda_refs
5653 && !readonly_dynrelocs (h))
5654 {
5655 h->pointer_equality_needed = 0;
5656 h->non_got_ref = 0;
5657 }
5658
5659 /* After adjust_dynamic_symbol, non_got_ref set in the
5660 non-shared case means that we have allocated space in
5661 .dynbss for the symbol and thus dyn_relocs for this
5662 symbol should be discarded.
5663 If we get here we know we are making a PLT entry for this
5664 symbol, and in an executable we'd normally resolve
5665 relocations against this symbol to the PLT entry. Allow
5666 dynamic relocs if the reference is weak, and the dynamic
5667 relocs will not cause text relocation. */
5668 else if (!h->ref_regular_nonweak
5669 && h->non_got_ref
5670 && h->type != STT_GNU_IFUNC
5671 && !htab->is_vxworks
5672 && !ppc_elf_hash_entry (h)->has_sda_refs
5673 && !readonly_dynrelocs (h))
5674 h->non_got_ref = 0;
5675 }
5676 h->protected_def = 0;
5677 return TRUE;
5678 }
5679 else
5680 h->plt.plist = NULL;
5681
5682 /* If this is a weak symbol, and there is a real definition, the
5683 processor independent code will have arranged for us to see the
5684 real definition first, and we can just use the same value. */
5685 if (h->u.weakdef != NULL)
5686 {
5687 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
5688 || h->u.weakdef->root.type == bfd_link_hash_defweak);
5689 h->root.u.def.section = h->u.weakdef->root.u.def.section;
5690 h->root.u.def.value = h->u.weakdef->root.u.def.value;
5691 if (ELIMINATE_COPY_RELOCS)
5692 h->non_got_ref = h->u.weakdef->non_got_ref;
5693 return TRUE;
5694 }
5695
5696 /* This is a reference to a symbol defined by a dynamic object which
5697 is not a function. */
5698
5699 /* If we are creating a shared library, we must presume that the
5700 only references to the symbol are via the global offset table.
5701 For such cases we need not do anything here; the relocations will
5702 be handled correctly by relocate_section. */
5703 if (bfd_link_pic (info))
5704 {
5705 h->protected_def = 0;
5706 return TRUE;
5707 }
5708
5709 /* If there are no references to this symbol that do not use the
5710 GOT, we don't need to generate a copy reloc. */
5711 if (!h->non_got_ref)
5712 {
5713 h->protected_def = 0;
5714 return TRUE;
5715 }
5716
5717 /* Protected variables do not work with .dynbss. The copy in
5718 .dynbss won't be used by the shared library with the protected
5719 definition for the variable. Editing to PIC, or text relocations
5720 are preferable to an incorrect program. */
5721 if (h->protected_def)
5722 {
5723 if (ELIMINATE_COPY_RELOCS
5724 && ppc_elf_hash_entry (h)->has_addr16_ha
5725 && ppc_elf_hash_entry (h)->has_addr16_lo
5726 && htab->params->pic_fixup == 0
5727 && info->disable_target_specific_optimizations <= 1)
5728 htab->params->pic_fixup = 1;
5729 h->non_got_ref = 0;
5730 return TRUE;
5731 }
5732
5733 /* If -z nocopyreloc was given, we won't generate them either. */
5734 if (info->nocopyreloc)
5735 {
5736 h->non_got_ref = 0;
5737 return TRUE;
5738 }
5739
5740 /* If we didn't find any dynamic relocs in read-only sections, then
5741 we'll be keeping the dynamic relocs and avoiding the copy reloc.
5742 We can't do this if there are any small data relocations. This
5743 doesn't work on VxWorks, where we can not have dynamic
5744 relocations (other than copy and jump slot relocations) in an
5745 executable. */
5746 if (ELIMINATE_COPY_RELOCS
5747 && !ppc_elf_hash_entry (h)->has_sda_refs
5748 && !htab->is_vxworks
5749 && !h->def_regular
5750 && !readonly_dynrelocs (h))
5751 {
5752 h->non_got_ref = 0;
5753 return TRUE;
5754 }
5755
5756 /* We must allocate the symbol in our .dynbss section, which will
5757 become part of the .bss section of the executable. There will be
5758 an entry for this symbol in the .dynsym section. The dynamic
5759 object will contain position independent code, so all references
5760 from the dynamic object to this symbol will go through the global
5761 offset table. The dynamic linker will use the .dynsym entry to
5762 determine the address it must put in the global offset table, so
5763 both the dynamic object and the regular object will refer to the
5764 same memory location for the variable.
5765
5766 Of course, if the symbol is referenced using SDAREL relocs, we
5767 must instead allocate it in .sbss. */
5768
5769 if (ppc_elf_hash_entry (h)->has_sda_refs)
5770 s = htab->dynsbss;
5771 else
5772 s = htab->dynbss;
5773 BFD_ASSERT (s != NULL);
5774
5775 /* We must generate a R_PPC_COPY reloc to tell the dynamic linker to
5776 copy the initial value out of the dynamic object and into the
5777 runtime process image. We need to remember the offset into the
5778 .rela.bss section we are going to use. */
5779 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
5780 {
5781 asection *srel;
5782
5783 if (ppc_elf_hash_entry (h)->has_sda_refs)
5784 srel = htab->relsbss;
5785 else
5786 srel = htab->relbss;
5787 BFD_ASSERT (srel != NULL);
5788 srel->size += sizeof (Elf32_External_Rela);
5789 h->needs_copy = 1;
5790 }
5791
5792 return _bfd_elf_adjust_dynamic_copy (info, h, s);
5793 }
5794 \f
5795 /* Generate a symbol to mark plt call stubs. For non-PIC code the sym is
5796 xxxxxxxx.plt_call32.<callee> where xxxxxxxx is a hex number, usually 0,
5797 specifying the addend on the plt relocation. For -fpic code, the sym
5798 is xxxxxxxx.plt_pic32.<callee>, and for -fPIC
5799 xxxxxxxx.got2.plt_pic32.<callee>. */
5800
5801 static bfd_boolean
5802 add_stub_sym (struct plt_entry *ent,
5803 struct elf_link_hash_entry *h,
5804 struct bfd_link_info *info)
5805 {
5806 struct elf_link_hash_entry *sh;
5807 size_t len1, len2, len3;
5808 char *name;
5809 const char *stub;
5810 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
5811
5812 if (bfd_link_pic (info))
5813 stub = ".plt_pic32.";
5814 else
5815 stub = ".plt_call32.";
5816
5817 len1 = strlen (h->root.root.string);
5818 len2 = strlen (stub);
5819 len3 = 0;
5820 if (ent->sec)
5821 len3 = strlen (ent->sec->name);
5822 name = bfd_malloc (len1 + len2 + len3 + 9);
5823 if (name == NULL)
5824 return FALSE;
5825 sprintf (name, "%08x", (unsigned) ent->addend & 0xffffffff);
5826 if (ent->sec)
5827 memcpy (name + 8, ent->sec->name, len3);
5828 memcpy (name + 8 + len3, stub, len2);
5829 memcpy (name + 8 + len3 + len2, h->root.root.string, len1 + 1);
5830 sh = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
5831 if (sh == NULL)
5832 return FALSE;
5833 if (sh->root.type == bfd_link_hash_new)
5834 {
5835 sh->root.type = bfd_link_hash_defined;
5836 sh->root.u.def.section = htab->glink;
5837 sh->root.u.def.value = ent->glink_offset;
5838 sh->ref_regular = 1;
5839 sh->def_regular = 1;
5840 sh->ref_regular_nonweak = 1;
5841 sh->forced_local = 1;
5842 sh->non_elf = 0;
5843 sh->root.linker_def = 1;
5844 }
5845 return TRUE;
5846 }
5847
5848 /* Allocate NEED contiguous space in .got, and return the offset.
5849 Handles allocation of the got header when crossing 32k. */
5850
5851 static bfd_vma
5852 allocate_got (struct ppc_elf_link_hash_table *htab, unsigned int need)
5853 {
5854 bfd_vma where;
5855 unsigned int max_before_header;
5856
5857 if (htab->plt_type == PLT_VXWORKS)
5858 {
5859 where = htab->got->size;
5860 htab->got->size += need;
5861 }
5862 else
5863 {
5864 max_before_header = htab->plt_type == PLT_NEW ? 32768 : 32764;
5865 if (need <= htab->got_gap)
5866 {
5867 where = max_before_header - htab->got_gap;
5868 htab->got_gap -= need;
5869 }
5870 else
5871 {
5872 if (htab->got->size + need > max_before_header
5873 && htab->got->size <= max_before_header)
5874 {
5875 htab->got_gap = max_before_header - htab->got->size;
5876 htab->got->size = max_before_header + htab->got_header_size;
5877 }
5878 where = htab->got->size;
5879 htab->got->size += need;
5880 }
5881 }
5882 return where;
5883 }
5884
5885 /* Allocate space in associated reloc sections for dynamic relocs. */
5886
5887 static bfd_boolean
5888 allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
5889 {
5890 struct bfd_link_info *info = inf;
5891 struct ppc_elf_link_hash_entry *eh;
5892 struct ppc_elf_link_hash_table *htab;
5893 struct elf_dyn_relocs *p;
5894
5895 if (h->root.type == bfd_link_hash_indirect)
5896 return TRUE;
5897
5898 htab = ppc_elf_hash_table (info);
5899 if (htab->elf.dynamic_sections_created
5900 || h->type == STT_GNU_IFUNC)
5901 {
5902 struct plt_entry *ent;
5903 bfd_boolean doneone = FALSE;
5904 bfd_vma plt_offset = 0, glink_offset = 0;
5905 bfd_boolean dyn;
5906
5907 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
5908 if (ent->plt.refcount > 0)
5909 {
5910 /* Make sure this symbol is output as a dynamic symbol. */
5911 if (h->dynindx == -1
5912 && !h->forced_local
5913 && !h->def_regular
5914 && htab->elf.dynamic_sections_created)
5915 {
5916 if (! bfd_elf_link_record_dynamic_symbol (info, h))
5917 return FALSE;
5918 }
5919
5920 dyn = htab->elf.dynamic_sections_created;
5921 if (bfd_link_pic (info)
5922 || h->type == STT_GNU_IFUNC
5923 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))
5924 {
5925 asection *s = htab->plt;
5926 if (!dyn || h->dynindx == -1)
5927 s = htab->iplt;
5928
5929 if (htab->plt_type == PLT_NEW || !dyn || h->dynindx == -1)
5930 {
5931 if (!doneone)
5932 {
5933 plt_offset = s->size;
5934 s->size += 4;
5935 }
5936 ent->plt.offset = plt_offset;
5937
5938 s = htab->glink;
5939 if (!doneone || bfd_link_pic (info))
5940 {
5941 glink_offset = s->size;
5942 s->size += GLINK_ENTRY_SIZE;
5943 if (h == htab->tls_get_addr
5944 && !htab->params->no_tls_get_addr_opt)
5945 s->size += TLS_GET_ADDR_GLINK_SIZE - GLINK_ENTRY_SIZE;
5946 }
5947 if (!doneone
5948 && !bfd_link_pic (info)
5949 && h->def_dynamic
5950 && !h->def_regular)
5951 {
5952 h->root.u.def.section = s;
5953 h->root.u.def.value = glink_offset;
5954 }
5955 ent->glink_offset = glink_offset;
5956
5957 if (htab->params->emit_stub_syms
5958 && !add_stub_sym (ent, h, info))
5959 return FALSE;
5960 }
5961 else
5962 {
5963 if (!doneone)
5964 {
5965 /* If this is the first .plt entry, make room
5966 for the special first entry. */
5967 if (s->size == 0)
5968 s->size += htab->plt_initial_entry_size;
5969
5970 /* The PowerPC PLT is actually composed of two
5971 parts, the first part is 2 words (for a load
5972 and a jump), and then there is a remaining
5973 word available at the end. */
5974 plt_offset = (htab->plt_initial_entry_size
5975 + (htab->plt_slot_size
5976 * ((s->size
5977 - htab->plt_initial_entry_size)
5978 / htab->plt_entry_size)));
5979
5980 /* If this symbol is not defined in a regular
5981 file, and we are not generating a shared
5982 library, then set the symbol to this location
5983 in the .plt. This is to avoid text
5984 relocations, and is required to make
5985 function pointers compare as equal between
5986 the normal executable and the shared library. */
5987 if (! bfd_link_pic (info)
5988 && h->def_dynamic
5989 && !h->def_regular)
5990 {
5991 h->root.u.def.section = s;
5992 h->root.u.def.value = plt_offset;
5993 }
5994
5995 /* Make room for this entry. */
5996 s->size += htab->plt_entry_size;
5997 /* After the 8192nd entry, room for two entries
5998 is allocated. */
5999 if (htab->plt_type == PLT_OLD
6000 && (s->size - htab->plt_initial_entry_size)
6001 / htab->plt_entry_size
6002 > PLT_NUM_SINGLE_ENTRIES)
6003 s->size += htab->plt_entry_size;
6004 }
6005 ent->plt.offset = plt_offset;
6006 }
6007
6008 /* We also need to make an entry in the .rela.plt section. */
6009 if (!doneone)
6010 {
6011 if (!htab->elf.dynamic_sections_created
6012 || h->dynindx == -1)
6013 htab->reliplt->size += sizeof (Elf32_External_Rela);
6014 else
6015 {
6016 htab->relplt->size += sizeof (Elf32_External_Rela);
6017
6018 if (htab->plt_type == PLT_VXWORKS)
6019 {
6020 /* Allocate space for the unloaded relocations. */
6021 if (!bfd_link_pic (info)
6022 && htab->elf.dynamic_sections_created)
6023 {
6024 if (ent->plt.offset
6025 == (bfd_vma) htab->plt_initial_entry_size)
6026 {
6027 htab->srelplt2->size
6028 += (sizeof (Elf32_External_Rela)
6029 * VXWORKS_PLTRESOLVE_RELOCS);
6030 }
6031
6032 htab->srelplt2->size
6033 += (sizeof (Elf32_External_Rela)
6034 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS);
6035 }
6036
6037 /* Every PLT entry has an associated GOT entry in
6038 .got.plt. */
6039 htab->sgotplt->size += 4;
6040 }
6041 }
6042 doneone = TRUE;
6043 }
6044 }
6045 else
6046 ent->plt.offset = (bfd_vma) -1;
6047 }
6048 else
6049 ent->plt.offset = (bfd_vma) -1;
6050
6051 if (!doneone)
6052 {
6053 h->plt.plist = NULL;
6054 h->needs_plt = 0;
6055 }
6056 }
6057 else
6058 {
6059 h->plt.plist = NULL;
6060 h->needs_plt = 0;
6061 }
6062
6063 eh = (struct ppc_elf_link_hash_entry *) h;
6064 if (eh->elf.got.refcount > 0
6065 || (ELIMINATE_COPY_RELOCS
6066 && !eh->elf.def_regular
6067 && eh->elf.protected_def
6068 && eh->has_addr16_ha
6069 && eh->has_addr16_lo
6070 && htab->params->pic_fixup > 0))
6071 {
6072 bfd_boolean dyn;
6073 unsigned int need;
6074
6075 /* Make sure this symbol is output as a dynamic symbol. */
6076 if (eh->elf.dynindx == -1
6077 && !eh->elf.forced_local
6078 && eh->elf.type != STT_GNU_IFUNC
6079 && htab->elf.dynamic_sections_created)
6080 {
6081 if (!bfd_elf_link_record_dynamic_symbol (info, &eh->elf))
6082 return FALSE;
6083 }
6084
6085 need = 0;
6086 if ((eh->tls_mask & TLS_TLS) != 0)
6087 {
6088 if ((eh->tls_mask & TLS_LD) != 0)
6089 {
6090 if (!eh->elf.def_dynamic)
6091 /* We'll just use htab->tlsld_got.offset. This should
6092 always be the case. It's a little odd if we have
6093 a local dynamic reloc against a non-local symbol. */
6094 htab->tlsld_got.refcount += 1;
6095 else
6096 need += 8;
6097 }
6098 if ((eh->tls_mask & TLS_GD) != 0)
6099 need += 8;
6100 if ((eh->tls_mask & (TLS_TPREL | TLS_TPRELGD)) != 0)
6101 need += 4;
6102 if ((eh->tls_mask & TLS_DTPREL) != 0)
6103 need += 4;
6104 }
6105 else
6106 need += 4;
6107 if (need == 0)
6108 eh->elf.got.offset = (bfd_vma) -1;
6109 else
6110 {
6111 eh->elf.got.offset = allocate_got (htab, need);
6112 dyn = htab->elf.dynamic_sections_created;
6113 if ((bfd_link_pic (info)
6114 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, &eh->elf))
6115 && (ELF_ST_VISIBILITY (eh->elf.other) == STV_DEFAULT
6116 || eh->elf.root.type != bfd_link_hash_undefweak))
6117 {
6118 asection *rsec = htab->relgot;
6119
6120 if (eh->elf.type == STT_GNU_IFUNC)
6121 rsec = htab->reliplt;
6122 /* All the entries we allocated need relocs.
6123 Except LD only needs one. */
6124 if ((eh->tls_mask & TLS_LD) != 0
6125 && eh->elf.def_dynamic)
6126 need -= 4;
6127 rsec->size += need * (sizeof (Elf32_External_Rela) / 4);
6128 }
6129 }
6130 }
6131 else
6132 eh->elf.got.offset = (bfd_vma) -1;
6133
6134 if (eh->dyn_relocs == NULL
6135 || !htab->elf.dynamic_sections_created)
6136 return TRUE;
6137
6138 /* In the shared -Bsymbolic case, discard space allocated for
6139 dynamic pc-relative relocs against symbols which turn out to be
6140 defined in regular objects. For the normal shared case, discard
6141 space for relocs that have become local due to symbol visibility
6142 changes. */
6143
6144 if (bfd_link_pic (info))
6145 {
6146 /* Relocs that use pc_count are those that appear on a call insn,
6147 or certain REL relocs (see must_be_dyn_reloc) that can be
6148 generated via assembly. We want calls to protected symbols to
6149 resolve directly to the function rather than going via the plt.
6150 If people want function pointer comparisons to work as expected
6151 then they should avoid writing weird assembly. */
6152 if (SYMBOL_CALLS_LOCAL (info, h))
6153 {
6154 struct elf_dyn_relocs **pp;
6155
6156 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
6157 {
6158 p->count -= p->pc_count;
6159 p->pc_count = 0;
6160 if (p->count == 0)
6161 *pp = p->next;
6162 else
6163 pp = &p->next;
6164 }
6165 }
6166
6167 if (htab->is_vxworks)
6168 {
6169 struct elf_dyn_relocs **pp;
6170
6171 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
6172 {
6173 if (strcmp (p->sec->output_section->name, ".tls_vars") == 0)
6174 *pp = p->next;
6175 else
6176 pp = &p->next;
6177 }
6178 }
6179
6180 /* Discard relocs on undefined symbols that must be local. */
6181 if (eh->dyn_relocs != NULL
6182 && h->root.type == bfd_link_hash_undefined
6183 && (ELF_ST_VISIBILITY (h->other) == STV_HIDDEN
6184 || ELF_ST_VISIBILITY (h->other) == STV_INTERNAL))
6185 eh->dyn_relocs = NULL;
6186
6187 /* Also discard relocs on undefined weak syms with non-default
6188 visibility. */
6189 if (eh->dyn_relocs != NULL
6190 && h->root.type == bfd_link_hash_undefweak)
6191 {
6192 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
6193 eh->dyn_relocs = NULL;
6194
6195 /* Make sure undefined weak symbols are output as a dynamic
6196 symbol in PIEs. */
6197 else if (h->dynindx == -1
6198 && !h->forced_local
6199 && !h->def_regular)
6200 {
6201 if (! bfd_elf_link_record_dynamic_symbol (info, h))
6202 return FALSE;
6203 }
6204 }
6205 }
6206 else if (ELIMINATE_COPY_RELOCS)
6207 {
6208 /* For the non-shared case, discard space for relocs against
6209 symbols which turn out to need copy relocs or are not
6210 dynamic. */
6211
6212 if (!h->non_got_ref
6213 && !h->def_regular
6214 && !(h->protected_def
6215 && eh->has_addr16_ha
6216 && eh->has_addr16_lo
6217 && htab->params->pic_fixup > 0))
6218 {
6219 /* Make sure this symbol is output as a dynamic symbol.
6220 Undefined weak syms won't yet be marked as dynamic. */
6221 if (h->dynindx == -1
6222 && !h->forced_local)
6223 {
6224 if (! bfd_elf_link_record_dynamic_symbol (info, h))
6225 return FALSE;
6226 }
6227
6228 /* If that succeeded, we know we'll be keeping all the
6229 relocs. */
6230 if (h->dynindx != -1)
6231 goto keep;
6232 }
6233
6234 eh->dyn_relocs = NULL;
6235
6236 keep: ;
6237 }
6238
6239 /* Finally, allocate space. */
6240 for (p = eh->dyn_relocs; p != NULL; p = p->next)
6241 {
6242 asection *sreloc = elf_section_data (p->sec)->sreloc;
6243 if (eh->elf.type == STT_GNU_IFUNC)
6244 sreloc = htab->reliplt;
6245 sreloc->size += p->count * sizeof (Elf32_External_Rela);
6246 }
6247
6248 return TRUE;
6249 }
6250
6251 /* Set DF_TEXTREL if we find any dynamic relocs that apply to
6252 read-only sections. */
6253
6254 static bfd_boolean
6255 maybe_set_textrel (struct elf_link_hash_entry *h, void *info)
6256 {
6257 if (h->root.type == bfd_link_hash_indirect)
6258 return TRUE;
6259
6260 if (readonly_dynrelocs (h))
6261 {
6262 ((struct bfd_link_info *) info)->flags |= DF_TEXTREL;
6263
6264 /* Not an error, just cut short the traversal. */
6265 return FALSE;
6266 }
6267 return TRUE;
6268 }
6269
6270 static const unsigned char glink_eh_frame_cie[] =
6271 {
6272 0, 0, 0, 16, /* length. */
6273 0, 0, 0, 0, /* id. */
6274 1, /* CIE version. */
6275 'z', 'R', 0, /* Augmentation string. */
6276 4, /* Code alignment. */
6277 0x7c, /* Data alignment. */
6278 65, /* RA reg. */
6279 1, /* Augmentation size. */
6280 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding. */
6281 DW_CFA_def_cfa, 1, 0 /* def_cfa: r1 offset 0. */
6282 };
6283
6284 /* Set the sizes of the dynamic sections. */
6285
6286 static bfd_boolean
6287 ppc_elf_size_dynamic_sections (bfd *output_bfd,
6288 struct bfd_link_info *info)
6289 {
6290 struct ppc_elf_link_hash_table *htab;
6291 asection *s;
6292 bfd_boolean relocs;
6293 bfd *ibfd;
6294
6295 #ifdef DEBUG
6296 fprintf (stderr, "ppc_elf_size_dynamic_sections called\n");
6297 #endif
6298
6299 htab = ppc_elf_hash_table (info);
6300 BFD_ASSERT (htab->elf.dynobj != NULL);
6301
6302 if (elf_hash_table (info)->dynamic_sections_created)
6303 {
6304 /* Set the contents of the .interp section to the interpreter. */
6305 if (bfd_link_executable (info) && !info->nointerp)
6306 {
6307 s = bfd_get_linker_section (htab->elf.dynobj, ".interp");
6308 BFD_ASSERT (s != NULL);
6309 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
6310 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
6311 }
6312 }
6313
6314 if (htab->plt_type == PLT_OLD)
6315 htab->got_header_size = 16;
6316 else if (htab->plt_type == PLT_NEW)
6317 htab->got_header_size = 12;
6318
6319 /* Set up .got offsets for local syms, and space for local dynamic
6320 relocs. */
6321 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
6322 {
6323 bfd_signed_vma *local_got;
6324 bfd_signed_vma *end_local_got;
6325 struct plt_entry **local_plt;
6326 struct plt_entry **end_local_plt;
6327 char *lgot_masks;
6328 bfd_size_type locsymcount;
6329 Elf_Internal_Shdr *symtab_hdr;
6330
6331 if (!is_ppc_elf (ibfd))
6332 continue;
6333
6334 for (s = ibfd->sections; s != NULL; s = s->next)
6335 {
6336 struct ppc_dyn_relocs *p;
6337
6338 for (p = ((struct ppc_dyn_relocs *)
6339 elf_section_data (s)->local_dynrel);
6340 p != NULL;
6341 p = p->next)
6342 {
6343 if (!bfd_is_abs_section (p->sec)
6344 && bfd_is_abs_section (p->sec->output_section))
6345 {
6346 /* Input section has been discarded, either because
6347 it is a copy of a linkonce section or due to
6348 linker script /DISCARD/, so we'll be discarding
6349 the relocs too. */
6350 }
6351 else if (htab->is_vxworks
6352 && strcmp (p->sec->output_section->name,
6353 ".tls_vars") == 0)
6354 {
6355 /* Relocations in vxworks .tls_vars sections are
6356 handled specially by the loader. */
6357 }
6358 else if (p->count != 0)
6359 {
6360 asection *sreloc = elf_section_data (p->sec)->sreloc;
6361 if (p->ifunc)
6362 sreloc = htab->reliplt;
6363 sreloc->size += p->count * sizeof (Elf32_External_Rela);
6364 if ((p->sec->output_section->flags
6365 & (SEC_READONLY | SEC_ALLOC))
6366 == (SEC_READONLY | SEC_ALLOC))
6367 info->flags |= DF_TEXTREL;
6368 }
6369 }
6370 }
6371
6372 local_got = elf_local_got_refcounts (ibfd);
6373 if (!local_got)
6374 continue;
6375
6376 symtab_hdr = &elf_symtab_hdr (ibfd);
6377 locsymcount = symtab_hdr->sh_info;
6378 end_local_got = local_got + locsymcount;
6379 local_plt = (struct plt_entry **) end_local_got;
6380 end_local_plt = local_plt + locsymcount;
6381 lgot_masks = (char *) end_local_plt;
6382
6383 for (; local_got < end_local_got; ++local_got, ++lgot_masks)
6384 if (*local_got > 0)
6385 {
6386 unsigned int need = 0;
6387 if ((*lgot_masks & TLS_TLS) != 0)
6388 {
6389 if ((*lgot_masks & TLS_GD) != 0)
6390 need += 8;
6391 if ((*lgot_masks & TLS_LD) != 0)
6392 htab->tlsld_got.refcount += 1;
6393 if ((*lgot_masks & (TLS_TPREL | TLS_TPRELGD)) != 0)
6394 need += 4;
6395 if ((*lgot_masks & TLS_DTPREL) != 0)
6396 need += 4;
6397 }
6398 else
6399 need += 4;
6400 if (need == 0)
6401 *local_got = (bfd_vma) -1;
6402 else
6403 {
6404 *local_got = allocate_got (htab, need);
6405 if (bfd_link_pic (info))
6406 {
6407 asection *srel = htab->relgot;
6408 if ((*lgot_masks & PLT_IFUNC) != 0)
6409 srel = htab->reliplt;
6410 srel->size += need * (sizeof (Elf32_External_Rela) / 4);
6411 }
6412 }
6413 }
6414 else
6415 *local_got = (bfd_vma) -1;
6416
6417 if (htab->is_vxworks)
6418 continue;
6419
6420 /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */
6421 for (; local_plt < end_local_plt; ++local_plt)
6422 {
6423 struct plt_entry *ent;
6424 bfd_boolean doneone = FALSE;
6425 bfd_vma plt_offset = 0, glink_offset = 0;
6426
6427 for (ent = *local_plt; ent != NULL; ent = ent->next)
6428 if (ent->plt.refcount > 0)
6429 {
6430 s = htab->iplt;
6431
6432 if (!doneone)
6433 {
6434 plt_offset = s->size;
6435 s->size += 4;
6436 }
6437 ent->plt.offset = plt_offset;
6438
6439 s = htab->glink;
6440 if (!doneone || bfd_link_pic (info))
6441 {
6442 glink_offset = s->size;
6443 s->size += GLINK_ENTRY_SIZE;
6444 }
6445 ent->glink_offset = glink_offset;
6446
6447 if (!doneone)
6448 {
6449 htab->reliplt->size += sizeof (Elf32_External_Rela);
6450 doneone = TRUE;
6451 }
6452 }
6453 else
6454 ent->plt.offset = (bfd_vma) -1;
6455 }
6456 }
6457
6458 /* Allocate space for global sym dynamic relocs. */
6459 elf_link_hash_traverse (elf_hash_table (info), allocate_dynrelocs, info);
6460
6461 if (htab->tlsld_got.refcount > 0)
6462 {
6463 htab->tlsld_got.offset = allocate_got (htab, 8);
6464 if (bfd_link_pic (info))
6465 htab->relgot->size += sizeof (Elf32_External_Rela);
6466 }
6467 else
6468 htab->tlsld_got.offset = (bfd_vma) -1;
6469
6470 if (htab->got != NULL && htab->plt_type != PLT_VXWORKS)
6471 {
6472 unsigned int g_o_t = 32768;
6473
6474 /* If we haven't allocated the header, do so now. When we get here,
6475 for old plt/got the got size will be 0 to 32764 (not allocated),
6476 or 32780 to 65536 (header allocated). For new plt/got, the
6477 corresponding ranges are 0 to 32768 and 32780 to 65536. */
6478 if (htab->got->size <= 32768)
6479 {
6480 g_o_t = htab->got->size;
6481 if (htab->plt_type == PLT_OLD)
6482 g_o_t += 4;
6483 htab->got->size += htab->got_header_size;
6484 }
6485
6486 htab->elf.hgot->root.u.def.value = g_o_t;
6487 }
6488 if (bfd_link_pic (info))
6489 {
6490 struct elf_link_hash_entry *sda = htab->sdata[0].sym;
6491
6492 sda->root.u.def.section = htab->elf.hgot->root.u.def.section;
6493 sda->root.u.def.value = htab->elf.hgot->root.u.def.value;
6494 }
6495 if (info->emitrelocations)
6496 {
6497 struct elf_link_hash_entry *sda = htab->sdata[0].sym;
6498
6499 if (sda != NULL && sda->ref_regular)
6500 sda->root.u.def.section->flags |= SEC_KEEP;
6501 sda = htab->sdata[1].sym;
6502 if (sda != NULL && sda->ref_regular)
6503 sda->root.u.def.section->flags |= SEC_KEEP;
6504 }
6505
6506 if (htab->glink != NULL
6507 && htab->glink->size != 0
6508 && htab->elf.dynamic_sections_created)
6509 {
6510 htab->glink_pltresolve = htab->glink->size;
6511 /* Space for the branch table. ??? We don't need entries for
6512 non-dynamic symbols in this table. This case can arise with
6513 static ifuncs or forced local ifuncs. */
6514 htab->glink->size += htab->glink->size / (GLINK_ENTRY_SIZE / 4) - 4;
6515 /* Pad out to align the start of PLTresolve. */
6516 htab->glink->size += -htab->glink->size & (htab->params->ppc476_workaround
6517 ? 63 : 15);
6518 htab->glink->size += GLINK_PLTRESOLVE;
6519
6520 if (htab->params->emit_stub_syms)
6521 {
6522 struct elf_link_hash_entry *sh;
6523 sh = elf_link_hash_lookup (&htab->elf, "__glink",
6524 TRUE, FALSE, FALSE);
6525 if (sh == NULL)
6526 return FALSE;
6527 if (sh->root.type == bfd_link_hash_new)
6528 {
6529 sh->root.type = bfd_link_hash_defined;
6530 sh->root.u.def.section = htab->glink;
6531 sh->root.u.def.value = htab->glink_pltresolve;
6532 sh->ref_regular = 1;
6533 sh->def_regular = 1;
6534 sh->ref_regular_nonweak = 1;
6535 sh->forced_local = 1;
6536 sh->non_elf = 0;
6537 sh->root.linker_def = 1;
6538 }
6539 sh = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve",
6540 TRUE, FALSE, FALSE);
6541 if (sh == NULL)
6542 return FALSE;
6543 if (sh->root.type == bfd_link_hash_new)
6544 {
6545 sh->root.type = bfd_link_hash_defined;
6546 sh->root.u.def.section = htab->glink;
6547 sh->root.u.def.value = htab->glink->size - GLINK_PLTRESOLVE;
6548 sh->ref_regular = 1;
6549 sh->def_regular = 1;
6550 sh->ref_regular_nonweak = 1;
6551 sh->forced_local = 1;
6552 sh->non_elf = 0;
6553 sh->root.linker_def = 1;
6554 }
6555 }
6556 }
6557
6558 if (htab->glink != NULL
6559 && htab->glink->size != 0
6560 && htab->glink_eh_frame != NULL
6561 && !bfd_is_abs_section (htab->glink_eh_frame->output_section)
6562 && _bfd_elf_eh_frame_present (info))
6563 {
6564 s = htab->glink_eh_frame;
6565 s->size = sizeof (glink_eh_frame_cie) + 20;
6566 if (bfd_link_pic (info))
6567 {
6568 s->size += 4;
6569 if (htab->glink->size - GLINK_PLTRESOLVE + 8 >= 256)
6570 s->size += 4;
6571 }
6572 }
6573
6574 /* We've now determined the sizes of the various dynamic sections.
6575 Allocate memory for them. */
6576 relocs = FALSE;
6577 for (s = htab->elf.dynobj->sections; s != NULL; s = s->next)
6578 {
6579 bfd_boolean strip_section = TRUE;
6580
6581 if ((s->flags & SEC_LINKER_CREATED) == 0)
6582 continue;
6583
6584 if (s == htab->plt
6585 || s == htab->got)
6586 {
6587 /* We'd like to strip these sections if they aren't needed, but if
6588 we've exported dynamic symbols from them we must leave them.
6589 It's too late to tell BFD to get rid of the symbols. */
6590 if (htab->elf.hplt != NULL)
6591 strip_section = FALSE;
6592 /* Strip this section if we don't need it; see the
6593 comment below. */
6594 }
6595 else if (s == htab->iplt
6596 || s == htab->glink
6597 || s == htab->glink_eh_frame
6598 || s == htab->sgotplt
6599 || s == htab->sbss
6600 || s == htab->dynbss
6601 || s == htab->dynsbss)
6602 {
6603 /* Strip these too. */
6604 }
6605 else if (s == htab->sdata[0].section
6606 || s == htab->sdata[1].section)
6607 {
6608 strip_section = (s->flags & SEC_KEEP) == 0;
6609 }
6610 else if (CONST_STRNEQ (bfd_get_section_name (htab->elf.dynobj, s),
6611 ".rela"))
6612 {
6613 if (s->size != 0)
6614 {
6615 /* Remember whether there are any relocation sections. */
6616 relocs = TRUE;
6617
6618 /* We use the reloc_count field as a counter if we need
6619 to copy relocs into the output file. */
6620 s->reloc_count = 0;
6621 }
6622 }
6623 else
6624 {
6625 /* It's not one of our sections, so don't allocate space. */
6626 continue;
6627 }
6628
6629 if (s->size == 0 && strip_section)
6630 {
6631 /* If we don't need this section, strip it from the
6632 output file. This is mostly to handle .rela.bss and
6633 .rela.plt. We must create both sections in
6634 create_dynamic_sections, because they must be created
6635 before the linker maps input sections to output
6636 sections. The linker does that before
6637 adjust_dynamic_symbol is called, and it is that
6638 function which decides whether anything needs to go
6639 into these sections. */
6640 s->flags |= SEC_EXCLUDE;
6641 continue;
6642 }
6643
6644 if ((s->flags & SEC_HAS_CONTENTS) == 0)
6645 continue;
6646
6647 /* Allocate memory for the section contents. */
6648 s->contents = bfd_zalloc (htab->elf.dynobj, s->size);
6649 if (s->contents == NULL)
6650 return FALSE;
6651 }
6652
6653 if (htab->elf.dynamic_sections_created)
6654 {
6655 /* Add some entries to the .dynamic section. We fill in the
6656 values later, in ppc_elf_finish_dynamic_sections, but we
6657 must add the entries now so that we get the correct size for
6658 the .dynamic section. The DT_DEBUG entry is filled in by the
6659 dynamic linker and used by the debugger. */
6660 #define add_dynamic_entry(TAG, VAL) \
6661 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
6662
6663 if (bfd_link_executable (info))
6664 {
6665 if (!add_dynamic_entry (DT_DEBUG, 0))
6666 return FALSE;
6667 }
6668
6669 if (htab->plt != NULL && htab->plt->size != 0)
6670 {
6671 if (!add_dynamic_entry (DT_PLTGOT, 0)
6672 || !add_dynamic_entry (DT_PLTRELSZ, 0)
6673 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
6674 || !add_dynamic_entry (DT_JMPREL, 0))
6675 return FALSE;
6676 }
6677
6678 if (htab->plt_type == PLT_NEW
6679 && htab->glink != NULL
6680 && htab->glink->size != 0)
6681 {
6682 if (!add_dynamic_entry (DT_PPC_GOT, 0))
6683 return FALSE;
6684 if (!htab->params->no_tls_get_addr_opt
6685 && htab->tls_get_addr != NULL
6686 && htab->tls_get_addr->plt.plist != NULL
6687 && !add_dynamic_entry (DT_PPC_OPT, PPC_OPT_TLS))
6688 return FALSE;
6689 }
6690
6691 if (relocs)
6692 {
6693 if (!add_dynamic_entry (DT_RELA, 0)
6694 || !add_dynamic_entry (DT_RELASZ, 0)
6695 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
6696 return FALSE;
6697 }
6698
6699 /* If any dynamic relocs apply to a read-only section, then we
6700 need a DT_TEXTREL entry. */
6701 if ((info->flags & DF_TEXTREL) == 0)
6702 elf_link_hash_traverse (elf_hash_table (info), maybe_set_textrel,
6703 info);
6704
6705 if ((info->flags & DF_TEXTREL) != 0)
6706 {
6707 if (!add_dynamic_entry (DT_TEXTREL, 0))
6708 return FALSE;
6709 }
6710 if (htab->is_vxworks
6711 && !elf_vxworks_add_dynamic_entries (output_bfd, info))
6712 return FALSE;
6713 }
6714 #undef add_dynamic_entry
6715
6716 if (htab->glink_eh_frame != NULL
6717 && htab->glink_eh_frame->contents != NULL)
6718 {
6719 unsigned char *p = htab->glink_eh_frame->contents;
6720 bfd_vma val;
6721
6722 memcpy (p, glink_eh_frame_cie, sizeof (glink_eh_frame_cie));
6723 /* CIE length (rewrite in case little-endian). */
6724 bfd_put_32 (htab->elf.dynobj, sizeof (glink_eh_frame_cie) - 4, p);
6725 p += sizeof (glink_eh_frame_cie);
6726 /* FDE length. */
6727 val = htab->glink_eh_frame->size - 4 - sizeof (glink_eh_frame_cie);
6728 bfd_put_32 (htab->elf.dynobj, val, p);
6729 p += 4;
6730 /* CIE pointer. */
6731 val = p - htab->glink_eh_frame->contents;
6732 bfd_put_32 (htab->elf.dynobj, val, p);
6733 p += 4;
6734 /* Offset to .glink. Set later. */
6735 p += 4;
6736 /* .glink size. */
6737 bfd_put_32 (htab->elf.dynobj, htab->glink->size, p);
6738 p += 4;
6739 /* Augmentation. */
6740 p += 1;
6741
6742 if (bfd_link_pic (info)
6743 && htab->elf.dynamic_sections_created)
6744 {
6745 bfd_vma adv = (htab->glink->size - GLINK_PLTRESOLVE + 8) >> 2;
6746 if (adv < 64)
6747 *p++ = DW_CFA_advance_loc + adv;
6748 else if (adv < 256)
6749 {
6750 *p++ = DW_CFA_advance_loc1;
6751 *p++ = adv;
6752 }
6753 else if (adv < 65536)
6754 {
6755 *p++ = DW_CFA_advance_loc2;
6756 bfd_put_16 (htab->elf.dynobj, adv, p);
6757 p += 2;
6758 }
6759 else
6760 {
6761 *p++ = DW_CFA_advance_loc4;
6762 bfd_put_32 (htab->elf.dynobj, adv, p);
6763 p += 4;
6764 }
6765 *p++ = DW_CFA_register;
6766 *p++ = 65;
6767 p++;
6768 *p++ = DW_CFA_advance_loc + 4;
6769 *p++ = DW_CFA_restore_extended;
6770 *p++ = 65;
6771 }
6772 BFD_ASSERT ((bfd_vma) ((p + 3 - htab->glink_eh_frame->contents) & -4)
6773 == htab->glink_eh_frame->size);
6774 }
6775
6776 return TRUE;
6777 }
6778
6779 /* Arrange to have _SDA_BASE_ or _SDA2_BASE_ stripped from the output
6780 if it looks like nothing is using them. */
6781
6782 static void
6783 maybe_strip_sdasym (bfd *output_bfd, elf_linker_section_t *lsect)
6784 {
6785 struct elf_link_hash_entry *sda = lsect->sym;
6786
6787 if (sda != NULL && !sda->ref_regular && sda->dynindx == -1)
6788 {
6789 asection *s;
6790
6791 s = bfd_get_section_by_name (output_bfd, lsect->name);
6792 if (s == NULL || bfd_section_removed_from_list (output_bfd, s))
6793 {
6794 s = bfd_get_section_by_name (output_bfd, lsect->bss_name);
6795 if (s == NULL || bfd_section_removed_from_list (output_bfd, s))
6796 {
6797 sda->def_regular = 0;
6798 /* This is somewhat magic. See elf_link_output_extsym. */
6799 sda->ref_dynamic = 1;
6800 sda->forced_local = 0;
6801 }
6802 }
6803 }
6804 }
6805
6806 void
6807 ppc_elf_maybe_strip_sdata_syms (struct bfd_link_info *info)
6808 {
6809 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
6810
6811 if (htab != NULL)
6812 {
6813 maybe_strip_sdasym (info->output_bfd, &htab->sdata[0]);
6814 maybe_strip_sdasym (info->output_bfd, &htab->sdata[1]);
6815 }
6816 }
6817
6818
6819 /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
6820
6821 static bfd_boolean
6822 ppc_elf_hash_symbol (struct elf_link_hash_entry *h)
6823 {
6824 if (h->plt.plist != NULL
6825 && !h->def_regular
6826 && (!h->pointer_equality_needed
6827 || !h->ref_regular_nonweak))
6828 return FALSE;
6829
6830 return _bfd_elf_hash_symbol (h);
6831 }
6832 \f
6833 #define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0]))
6834
6835 /* Relaxation trampolines. r12 is available for clobbering (r11, is
6836 used for some functions that are allowed to break the ABI). */
6837 static const int shared_stub_entry[] =
6838 {
6839 0x7c0802a6, /* mflr 0 */
6840 0x429f0005, /* bcl 20, 31, .Lxxx */
6841 0x7d8802a6, /* mflr 12 */
6842 0x3d8c0000, /* addis 12, 12, (xxx-.Lxxx)@ha */
6843 0x398c0000, /* addi 12, 12, (xxx-.Lxxx)@l */
6844 0x7c0803a6, /* mtlr 0 */
6845 0x7d8903a6, /* mtctr 12 */
6846 0x4e800420, /* bctr */
6847 };
6848
6849 static const int stub_entry[] =
6850 {
6851 0x3d800000, /* lis 12,xxx@ha */
6852 0x398c0000, /* addi 12,12,xxx@l */
6853 0x7d8903a6, /* mtctr 12 */
6854 0x4e800420, /* bctr */
6855 };
6856
6857 struct ppc_elf_relax_info
6858 {
6859 unsigned int workaround_size;
6860 unsigned int picfixup_size;
6861 };
6862
6863 /* This function implements long branch trampolines, and the ppc476
6864 icache bug workaround. Any section needing trampolines or patch
6865 space for the workaround has its size extended so that we can
6866 add trampolines at the end of the section. */
6867
6868 static bfd_boolean
6869 ppc_elf_relax_section (bfd *abfd,
6870 asection *isec,
6871 struct bfd_link_info *link_info,
6872 bfd_boolean *again)
6873 {
6874 struct one_branch_fixup
6875 {
6876 struct one_branch_fixup *next;
6877 asection *tsec;
6878 /* Final link, can use the symbol offset. For a
6879 relocatable link we use the symbol's index. */
6880 bfd_vma toff;
6881 bfd_vma trampoff;
6882 };
6883
6884 Elf_Internal_Shdr *symtab_hdr;
6885 bfd_byte *contents = NULL;
6886 Elf_Internal_Sym *isymbuf = NULL;
6887 Elf_Internal_Rela *internal_relocs = NULL;
6888 Elf_Internal_Rela *irel, *irelend = NULL;
6889 struct one_branch_fixup *branch_fixups = NULL;
6890 struct ppc_elf_relax_info *relax_info = NULL;
6891 unsigned changes = 0;
6892 bfd_boolean workaround_change;
6893 struct ppc_elf_link_hash_table *htab;
6894 bfd_size_type trampbase, trampoff, newsize, picfixup_size;
6895 asection *got2;
6896 bfd_boolean maybe_pasted;
6897
6898 *again = FALSE;
6899
6900 /* No need to do anything with non-alloc or non-code sections. */
6901 if ((isec->flags & SEC_ALLOC) == 0
6902 || (isec->flags & SEC_CODE) == 0
6903 || (isec->flags & SEC_LINKER_CREATED) != 0
6904 || isec->size < 4)
6905 return TRUE;
6906
6907 /* We cannot represent the required PIC relocs in the output, so don't
6908 do anything. The linker doesn't support mixing -shared and -r
6909 anyway. */
6910 if (bfd_link_relocatable (link_info) && bfd_link_pic (link_info))
6911 return TRUE;
6912
6913 htab = ppc_elf_hash_table (link_info);
6914 if (htab == NULL)
6915 return TRUE;
6916
6917 isec->size = (isec->size + 3) & -4;
6918 if (isec->rawsize == 0)
6919 isec->rawsize = isec->size;
6920 trampbase = isec->size;
6921
6922 BFD_ASSERT (isec->sec_info_type == SEC_INFO_TYPE_NONE
6923 || isec->sec_info_type == SEC_INFO_TYPE_TARGET);
6924 isec->sec_info_type = SEC_INFO_TYPE_TARGET;
6925
6926 if (htab->params->ppc476_workaround
6927 || htab->params->pic_fixup > 0)
6928 {
6929 if (elf_section_data (isec)->sec_info == NULL)
6930 {
6931 elf_section_data (isec)->sec_info
6932 = bfd_zalloc (abfd, sizeof (struct ppc_elf_relax_info));
6933 if (elf_section_data (isec)->sec_info == NULL)
6934 return FALSE;
6935 }
6936 relax_info = elf_section_data (isec)->sec_info;
6937 trampbase -= relax_info->workaround_size;
6938 }
6939
6940 maybe_pasted = (strcmp (isec->output_section->name, ".init") == 0
6941 || strcmp (isec->output_section->name, ".fini") == 0);
6942 /* Space for a branch around any trampolines. */
6943 trampoff = trampbase;
6944 if (maybe_pasted && trampbase == isec->rawsize)
6945 trampoff += 4;
6946
6947 symtab_hdr = &elf_symtab_hdr (abfd);
6948 picfixup_size = 0;
6949 if (htab->params->branch_trampolines
6950 || htab->params->pic_fixup > 0)
6951 {
6952 /* Get a copy of the native relocations. */
6953 if (isec->reloc_count != 0)
6954 {
6955 internal_relocs = _bfd_elf_link_read_relocs (abfd, isec, NULL, NULL,
6956 link_info->keep_memory);
6957 if (internal_relocs == NULL)
6958 goto error_return;
6959 }
6960
6961 got2 = bfd_get_section_by_name (abfd, ".got2");
6962
6963 irelend = internal_relocs + isec->reloc_count;
6964 for (irel = internal_relocs; irel < irelend; irel++)
6965 {
6966 unsigned long r_type = ELF32_R_TYPE (irel->r_info);
6967 bfd_vma toff, roff;
6968 asection *tsec;
6969 struct one_branch_fixup *f;
6970 size_t insn_offset = 0;
6971 bfd_vma max_branch_offset = 0, val;
6972 bfd_byte *hit_addr;
6973 unsigned long t0;
6974 struct elf_link_hash_entry *h;
6975 struct plt_entry **plist;
6976 unsigned char sym_type;
6977
6978 switch (r_type)
6979 {
6980 case R_PPC_REL24:
6981 case R_PPC_LOCAL24PC:
6982 case R_PPC_PLTREL24:
6983 max_branch_offset = 1 << 25;
6984 break;
6985
6986 case R_PPC_REL14:
6987 case R_PPC_REL14_BRTAKEN:
6988 case R_PPC_REL14_BRNTAKEN:
6989 max_branch_offset = 1 << 15;
6990 break;
6991
6992 case R_PPC_ADDR16_HA:
6993 if (htab->params->pic_fixup > 0)
6994 break;
6995 continue;
6996
6997 default:
6998 continue;
6999 }
7000
7001 /* Get the value of the symbol referred to by the reloc. */
7002 h = NULL;
7003 if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
7004 {
7005 /* A local symbol. */
7006 Elf_Internal_Sym *isym;
7007
7008 /* Read this BFD's local symbols. */
7009 if (isymbuf == NULL)
7010 {
7011 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
7012 if (isymbuf == NULL)
7013 isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
7014 symtab_hdr->sh_info, 0,
7015 NULL, NULL, NULL);
7016 if (isymbuf == 0)
7017 goto error_return;
7018 }
7019 isym = isymbuf + ELF32_R_SYM (irel->r_info);
7020 if (isym->st_shndx == SHN_UNDEF)
7021 tsec = bfd_und_section_ptr;
7022 else if (isym->st_shndx == SHN_ABS)
7023 tsec = bfd_abs_section_ptr;
7024 else if (isym->st_shndx == SHN_COMMON)
7025 tsec = bfd_com_section_ptr;
7026 else
7027 tsec = bfd_section_from_elf_index (abfd, isym->st_shndx);
7028
7029 toff = isym->st_value;
7030 sym_type = ELF_ST_TYPE (isym->st_info);
7031 }
7032 else
7033 {
7034 /* Global symbol handling. */
7035 unsigned long indx;
7036
7037 indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
7038 h = elf_sym_hashes (abfd)[indx];
7039
7040 while (h->root.type == bfd_link_hash_indirect
7041 || h->root.type == bfd_link_hash_warning)
7042 h = (struct elf_link_hash_entry *) h->root.u.i.link;
7043
7044 if (h->root.type == bfd_link_hash_defined
7045 || h->root.type == bfd_link_hash_defweak)
7046 {
7047 tsec = h->root.u.def.section;
7048 toff = h->root.u.def.value;
7049 }
7050 else if (h->root.type == bfd_link_hash_undefined
7051 || h->root.type == bfd_link_hash_undefweak)
7052 {
7053 tsec = bfd_und_section_ptr;
7054 toff = bfd_link_relocatable (link_info) ? indx : 0;
7055 }
7056 else
7057 continue;
7058
7059 /* If this branch is to __tls_get_addr then we may later
7060 optimise away the call. We won't be needing a long-
7061 branch stub in that case. */
7062 if (bfd_link_executable (link_info)
7063 && h == htab->tls_get_addr
7064 && irel != internal_relocs)
7065 {
7066 unsigned long t_symndx = ELF32_R_SYM (irel[-1].r_info);
7067 unsigned long t_rtype = ELF32_R_TYPE (irel[-1].r_info);
7068 unsigned int tls_mask = 0;
7069
7070 /* The previous reloc should be one of R_PPC_TLSGD or
7071 R_PPC_TLSLD, or for older object files, a reloc
7072 on the __tls_get_addr arg setup insn. Get tls
7073 mask bits from the symbol on that reloc. */
7074 if (t_symndx < symtab_hdr->sh_info)
7075 {
7076 bfd_vma *local_got_offsets = elf_local_got_offsets (abfd);
7077
7078 if (local_got_offsets != NULL)
7079 {
7080 struct plt_entry **local_plt = (struct plt_entry **)
7081 (local_got_offsets + symtab_hdr->sh_info);
7082 char *lgot_masks = (char *)
7083 (local_plt + symtab_hdr->sh_info);
7084 tls_mask = lgot_masks[t_symndx];
7085 }
7086 }
7087 else
7088 {
7089 struct elf_link_hash_entry *th
7090 = elf_sym_hashes (abfd)[t_symndx - symtab_hdr->sh_info];
7091
7092 while (th->root.type == bfd_link_hash_indirect
7093 || th->root.type == bfd_link_hash_warning)
7094 th = (struct elf_link_hash_entry *) th->root.u.i.link;
7095
7096 tls_mask
7097 = ((struct ppc_elf_link_hash_entry *) th)->tls_mask;
7098 }
7099
7100 /* The mask bits tell us if the call will be
7101 optimised away. */
7102 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0
7103 && (t_rtype == R_PPC_TLSGD
7104 || t_rtype == R_PPC_GOT_TLSGD16
7105 || t_rtype == R_PPC_GOT_TLSGD16_LO))
7106 continue;
7107 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0
7108 && (t_rtype == R_PPC_TLSLD
7109 || t_rtype == R_PPC_GOT_TLSLD16
7110 || t_rtype == R_PPC_GOT_TLSLD16_LO))
7111 continue;
7112 }
7113
7114 sym_type = h->type;
7115 }
7116
7117 if (r_type == R_PPC_ADDR16_HA)
7118 {
7119 if (h != NULL
7120 && !h->def_regular
7121 && h->protected_def
7122 && ppc_elf_hash_entry (h)->has_addr16_ha
7123 && ppc_elf_hash_entry (h)->has_addr16_lo)
7124 picfixup_size += 12;
7125 continue;
7126 }
7127
7128 /* The condition here under which we call find_plt_ent must
7129 match that in relocate_section. If we call find_plt_ent here
7130 but not in relocate_section, or vice versa, then the branch
7131 destination used here may be incorrect. */
7132 plist = NULL;
7133 if (h != NULL)
7134 {
7135 /* We know is_branch_reloc (r_type) is true. */
7136 if (h->type == STT_GNU_IFUNC
7137 || r_type == R_PPC_PLTREL24)
7138 plist = &h->plt.plist;
7139 }
7140 else if (sym_type == STT_GNU_IFUNC
7141 && elf_local_got_offsets (abfd) != NULL)
7142 {
7143 bfd_vma *local_got_offsets = elf_local_got_offsets (abfd);
7144 struct plt_entry **local_plt = (struct plt_entry **)
7145 (local_got_offsets + symtab_hdr->sh_info);
7146 plist = local_plt + ELF32_R_SYM (irel->r_info);
7147 }
7148 if (plist != NULL)
7149 {
7150 bfd_vma addend = 0;
7151 struct plt_entry *ent;
7152
7153 if (r_type == R_PPC_PLTREL24 && bfd_link_pic (link_info))
7154 addend = irel->r_addend;
7155 ent = find_plt_ent (plist, got2, addend);
7156 if (ent != NULL)
7157 {
7158 if (htab->plt_type == PLT_NEW
7159 || h == NULL
7160 || !htab->elf.dynamic_sections_created
7161 || h->dynindx == -1)
7162 {
7163 tsec = htab->glink;
7164 toff = ent->glink_offset;
7165 }
7166 else
7167 {
7168 tsec = htab->plt;
7169 toff = ent->plt.offset;
7170 }
7171 }
7172 }
7173
7174 /* If the branch and target are in the same section, you have
7175 no hope of adding stubs. We'll error out later should the
7176 branch overflow. */
7177 if (tsec == isec)
7178 continue;
7179
7180 /* There probably isn't any reason to handle symbols in
7181 SEC_MERGE sections; SEC_MERGE doesn't seem a likely
7182 attribute for a code section, and we are only looking at
7183 branches. However, implement it correctly here as a
7184 reference for other target relax_section functions. */
7185 if (0 && tsec->sec_info_type == SEC_INFO_TYPE_MERGE)
7186 {
7187 /* At this stage in linking, no SEC_MERGE symbol has been
7188 adjusted, so all references to such symbols need to be
7189 passed through _bfd_merged_section_offset. (Later, in
7190 relocate_section, all SEC_MERGE symbols *except* for
7191 section symbols have been adjusted.)
7192
7193 gas may reduce relocations against symbols in SEC_MERGE
7194 sections to a relocation against the section symbol when
7195 the original addend was zero. When the reloc is against
7196 a section symbol we should include the addend in the
7197 offset passed to _bfd_merged_section_offset, since the
7198 location of interest is the original symbol. On the
7199 other hand, an access to "sym+addend" where "sym" is not
7200 a section symbol should not include the addend; Such an
7201 access is presumed to be an offset from "sym"; The
7202 location of interest is just "sym". */
7203 if (sym_type == STT_SECTION)
7204 toff += irel->r_addend;
7205
7206 toff
7207 = _bfd_merged_section_offset (abfd, &tsec,
7208 elf_section_data (tsec)->sec_info,
7209 toff);
7210
7211 if (sym_type != STT_SECTION)
7212 toff += irel->r_addend;
7213 }
7214 /* PLTREL24 addends are special. */
7215 else if (r_type != R_PPC_PLTREL24)
7216 toff += irel->r_addend;
7217
7218 /* Attempted -shared link of non-pic code loses. */
7219 if ((!bfd_link_relocatable (link_info)
7220 && tsec == bfd_und_section_ptr)
7221 || tsec->output_section == NULL
7222 || (tsec->owner != NULL
7223 && (tsec->owner->flags & BFD_PLUGIN) != 0))
7224 continue;
7225
7226 roff = irel->r_offset;
7227
7228 /* If the branch is in range, no need to do anything. */
7229 if (tsec != bfd_und_section_ptr
7230 && (!bfd_link_relocatable (link_info)
7231 /* A relocatable link may have sections moved during
7232 final link, so do not presume they remain in range. */
7233 || tsec->output_section == isec->output_section))
7234 {
7235 bfd_vma symaddr, reladdr;
7236
7237 symaddr = tsec->output_section->vma + tsec->output_offset + toff;
7238 reladdr = isec->output_section->vma + isec->output_offset + roff;
7239 if (symaddr - reladdr + max_branch_offset
7240 < 2 * max_branch_offset)
7241 continue;
7242 }
7243
7244 /* Look for an existing fixup to this address. */
7245 for (f = branch_fixups; f ; f = f->next)
7246 if (f->tsec == tsec && f->toff == toff)
7247 break;
7248
7249 if (f == NULL)
7250 {
7251 size_t size;
7252 unsigned long stub_rtype;
7253
7254 val = trampoff - roff;
7255 if (val >= max_branch_offset)
7256 /* Oh dear, we can't reach a trampoline. Don't try to add
7257 one. We'll report an error later. */
7258 continue;
7259
7260 if (bfd_link_pic (link_info))
7261 {
7262 size = 4 * ARRAY_SIZE (shared_stub_entry);
7263 insn_offset = 12;
7264 }
7265 else
7266 {
7267 size = 4 * ARRAY_SIZE (stub_entry);
7268 insn_offset = 0;
7269 }
7270 stub_rtype = R_PPC_RELAX;
7271 if (tsec == htab->plt
7272 || tsec == htab->glink)
7273 {
7274 stub_rtype = R_PPC_RELAX_PLT;
7275 if (r_type == R_PPC_PLTREL24)
7276 stub_rtype = R_PPC_RELAX_PLTREL24;
7277 }
7278
7279 /* Hijack the old relocation. Since we need two
7280 relocations for this use a "composite" reloc. */
7281 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
7282 stub_rtype);
7283 irel->r_offset = trampoff + insn_offset;
7284 if (r_type == R_PPC_PLTREL24
7285 && stub_rtype != R_PPC_RELAX_PLTREL24)
7286 irel->r_addend = 0;
7287
7288 /* Record the fixup so we don't do it again this section. */
7289 f = bfd_malloc (sizeof (*f));
7290 f->next = branch_fixups;
7291 f->tsec = tsec;
7292 f->toff = toff;
7293 f->trampoff = trampoff;
7294 branch_fixups = f;
7295
7296 trampoff += size;
7297 changes++;
7298 }
7299 else
7300 {
7301 val = f->trampoff - roff;
7302 if (val >= max_branch_offset)
7303 continue;
7304
7305 /* Nop out the reloc, since we're finalizing things here. */
7306 irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
7307 }
7308
7309 /* Get the section contents. */
7310 if (contents == NULL)
7311 {
7312 /* Get cached copy if it exists. */
7313 if (elf_section_data (isec)->this_hdr.contents != NULL)
7314 contents = elf_section_data (isec)->this_hdr.contents;
7315 /* Go get them off disk. */
7316 else if (!bfd_malloc_and_get_section (abfd, isec, &contents))
7317 goto error_return;
7318 }
7319
7320 /* Fix up the existing branch to hit the trampoline. */
7321 hit_addr = contents + roff;
7322 switch (r_type)
7323 {
7324 case R_PPC_REL24:
7325 case R_PPC_LOCAL24PC:
7326 case R_PPC_PLTREL24:
7327 t0 = bfd_get_32 (abfd, hit_addr);
7328 t0 &= ~0x3fffffc;
7329 t0 |= val & 0x3fffffc;
7330 bfd_put_32 (abfd, t0, hit_addr);
7331 break;
7332
7333 case R_PPC_REL14:
7334 case R_PPC_REL14_BRTAKEN:
7335 case R_PPC_REL14_BRNTAKEN:
7336 t0 = bfd_get_32 (abfd, hit_addr);
7337 t0 &= ~0xfffc;
7338 t0 |= val & 0xfffc;
7339 bfd_put_32 (abfd, t0, hit_addr);
7340 break;
7341 }
7342 }
7343
7344 while (branch_fixups != NULL)
7345 {
7346 struct one_branch_fixup *f = branch_fixups;
7347 branch_fixups = branch_fixups->next;
7348 free (f);
7349 }
7350 }
7351
7352 workaround_change = FALSE;
7353 newsize = trampoff;
7354 if (htab->params->ppc476_workaround
7355 && (!bfd_link_relocatable (link_info)
7356 || isec->output_section->alignment_power >= htab->params->pagesize_p2))
7357 {
7358 bfd_vma addr, end_addr;
7359 unsigned int crossings;
7360 bfd_vma pagesize = (bfd_vma) 1 << htab->params->pagesize_p2;
7361
7362 addr = isec->output_section->vma + isec->output_offset;
7363 end_addr = addr + trampoff;
7364 addr &= -pagesize;
7365 crossings = ((end_addr & -pagesize) - addr) >> htab->params->pagesize_p2;
7366 if (crossings != 0)
7367 {
7368 /* Keep space aligned, to ensure the patch code itself does
7369 not cross a page. Don't decrease size calculated on a
7370 previous pass as otherwise we might never settle on a layout. */
7371 newsize = 15 - ((end_addr - 1) & 15);
7372 newsize += crossings * 16;
7373 if (relax_info->workaround_size < newsize)
7374 {
7375 relax_info->workaround_size = newsize;
7376 workaround_change = TRUE;
7377 }
7378 /* Ensure relocate_section is called. */
7379 isec->flags |= SEC_RELOC;
7380 }
7381 newsize = trampoff + relax_info->workaround_size;
7382 }
7383
7384 if (htab->params->pic_fixup > 0)
7385 {
7386 picfixup_size -= relax_info->picfixup_size;
7387 if (picfixup_size != 0)
7388 relax_info->picfixup_size += picfixup_size;
7389 newsize += relax_info->picfixup_size;
7390 }
7391
7392 if (changes != 0 || picfixup_size != 0 || workaround_change)
7393 isec->size = newsize;
7394
7395 if (isymbuf != NULL
7396 && symtab_hdr->contents != (unsigned char *) isymbuf)
7397 {
7398 if (! link_info->keep_memory)
7399 free (isymbuf);
7400 else
7401 {
7402 /* Cache the symbols for elf_link_input_bfd. */
7403 symtab_hdr->contents = (unsigned char *) isymbuf;
7404 }
7405 }
7406
7407 if (contents != NULL
7408 && elf_section_data (isec)->this_hdr.contents != contents)
7409 {
7410 if (!changes && !link_info->keep_memory)
7411 free (contents);
7412 else
7413 {
7414 /* Cache the section contents for elf_link_input_bfd. */
7415 elf_section_data (isec)->this_hdr.contents = contents;
7416 }
7417 }
7418
7419 changes += picfixup_size;
7420 if (changes != 0)
7421 {
7422 /* Append sufficient NOP relocs so we can write out relocation
7423 information for the trampolines. */
7424 Elf_Internal_Shdr *rel_hdr;
7425 Elf_Internal_Rela *new_relocs = bfd_malloc ((changes + isec->reloc_count)
7426 * sizeof (*new_relocs));
7427 unsigned ix;
7428
7429 if (!new_relocs)
7430 goto error_return;
7431 memcpy (new_relocs, internal_relocs,
7432 isec->reloc_count * sizeof (*new_relocs));
7433 for (ix = changes; ix--;)
7434 {
7435 irel = new_relocs + ix + isec->reloc_count;
7436
7437 irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
7438 }
7439 if (internal_relocs != elf_section_data (isec)->relocs)
7440 free (internal_relocs);
7441 elf_section_data (isec)->relocs = new_relocs;
7442 isec->reloc_count += changes;
7443 rel_hdr = _bfd_elf_single_rel_hdr (isec);
7444 rel_hdr->sh_size += changes * rel_hdr->sh_entsize;
7445 }
7446 else if (internal_relocs != NULL
7447 && elf_section_data (isec)->relocs != internal_relocs)
7448 free (internal_relocs);
7449
7450 *again = changes != 0 || workaround_change;
7451 return TRUE;
7452
7453 error_return:
7454 while (branch_fixups != NULL)
7455 {
7456 struct one_branch_fixup *f = branch_fixups;
7457 branch_fixups = branch_fixups->next;
7458 free (f);
7459 }
7460 if (isymbuf != NULL && (unsigned char *) isymbuf != symtab_hdr->contents)
7461 free (isymbuf);
7462 if (contents != NULL
7463 && elf_section_data (isec)->this_hdr.contents != contents)
7464 free (contents);
7465 if (internal_relocs != NULL
7466 && elf_section_data (isec)->relocs != internal_relocs)
7467 free (internal_relocs);
7468 return FALSE;
7469 }
7470 \f
7471 /* What to do when ld finds relocations against symbols defined in
7472 discarded sections. */
7473
7474 static unsigned int
7475 ppc_elf_action_discarded (asection *sec)
7476 {
7477 if (strcmp (".fixup", sec->name) == 0)
7478 return 0;
7479
7480 if (strcmp (".got2", sec->name) == 0)
7481 return 0;
7482
7483 return _bfd_elf_default_action_discarded (sec);
7484 }
7485 \f
7486 /* Fill in the address for a pointer generated in a linker section. */
7487
7488 static bfd_vma
7489 elf_finish_pointer_linker_section (bfd *input_bfd,
7490 elf_linker_section_t *lsect,
7491 struct elf_link_hash_entry *h,
7492 bfd_vma relocation,
7493 const Elf_Internal_Rela *rel)
7494 {
7495 elf_linker_section_pointers_t *linker_section_ptr;
7496
7497 BFD_ASSERT (lsect != NULL);
7498
7499 if (h != NULL)
7500 {
7501 /* Handle global symbol. */
7502 struct ppc_elf_link_hash_entry *eh;
7503
7504 eh = (struct ppc_elf_link_hash_entry *) h;
7505 BFD_ASSERT (eh->elf.def_regular);
7506 linker_section_ptr = eh->linker_section_pointer;
7507 }
7508 else
7509 {
7510 /* Handle local symbol. */
7511 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
7512
7513 BFD_ASSERT (is_ppc_elf (input_bfd));
7514 BFD_ASSERT (elf_local_ptr_offsets (input_bfd) != NULL);
7515 linker_section_ptr = elf_local_ptr_offsets (input_bfd)[r_symndx];
7516 }
7517
7518 linker_section_ptr = elf_find_pointer_linker_section (linker_section_ptr,
7519 rel->r_addend,
7520 lsect);
7521 BFD_ASSERT (linker_section_ptr != NULL);
7522
7523 /* Offset will always be a multiple of four, so use the bottom bit
7524 as a "written" flag. */
7525 if ((linker_section_ptr->offset & 1) == 0)
7526 {
7527 bfd_put_32 (lsect->section->owner,
7528 relocation + linker_section_ptr->addend,
7529 lsect->section->contents + linker_section_ptr->offset);
7530 linker_section_ptr->offset += 1;
7531 }
7532
7533 relocation = (lsect->section->output_section->vma
7534 + lsect->section->output_offset
7535 + linker_section_ptr->offset - 1
7536 - SYM_VAL (lsect->sym));
7537
7538 #ifdef DEBUG
7539 fprintf (stderr,
7540 "Finish pointer in linker section %s, offset = %ld (0x%lx)\n",
7541 lsect->name, (long) relocation, (long) relocation);
7542 #endif
7543
7544 return relocation;
7545 }
7546
7547 #define PPC_LO(v) ((v) & 0xffff)
7548 #define PPC_HI(v) (((v) >> 16) & 0xffff)
7549 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
7550
7551 static void
7552 write_glink_stub (struct plt_entry *ent, asection *plt_sec, unsigned char *p,
7553 struct bfd_link_info *info)
7554 {
7555 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
7556 bfd *output_bfd = info->output_bfd;
7557 bfd_vma plt;
7558
7559 plt = ((ent->plt.offset & ~1)
7560 + plt_sec->output_section->vma
7561 + plt_sec->output_offset);
7562
7563 if (bfd_link_pic (info))
7564 {
7565 bfd_vma got = 0;
7566
7567 if (ent->addend >= 32768)
7568 got = (ent->addend
7569 + ent->sec->output_section->vma
7570 + ent->sec->output_offset);
7571 else if (htab->elf.hgot != NULL)
7572 got = SYM_VAL (htab->elf.hgot);
7573
7574 plt -= got;
7575
7576 if (plt + 0x8000 < 0x10000)
7577 {
7578 bfd_put_32 (output_bfd, LWZ_11_30 + PPC_LO (plt), p);
7579 p += 4;
7580 bfd_put_32 (output_bfd, MTCTR_11, p);
7581 p += 4;
7582 bfd_put_32 (output_bfd, BCTR, p);
7583 p += 4;
7584 bfd_put_32 (output_bfd, htab->params->ppc476_workaround ? BA : NOP, p);
7585 p += 4;
7586 }
7587 else
7588 {
7589 bfd_put_32 (output_bfd, ADDIS_11_30 + PPC_HA (plt), p);
7590 p += 4;
7591 bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
7592 p += 4;
7593 bfd_put_32 (output_bfd, MTCTR_11, p);
7594 p += 4;
7595 bfd_put_32 (output_bfd, BCTR, p);
7596 p += 4;
7597 }
7598 }
7599 else
7600 {
7601 bfd_put_32 (output_bfd, LIS_11 + PPC_HA (plt), p);
7602 p += 4;
7603 bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
7604 p += 4;
7605 bfd_put_32 (output_bfd, MTCTR_11, p);
7606 p += 4;
7607 bfd_put_32 (output_bfd, BCTR, p);
7608 p += 4;
7609 }
7610 }
7611
7612 /* Return true if symbol is defined statically. */
7613
7614 static bfd_boolean
7615 is_static_defined (struct elf_link_hash_entry *h)
7616 {
7617 return ((h->root.type == bfd_link_hash_defined
7618 || h->root.type == bfd_link_hash_defweak)
7619 && h->root.u.def.section != NULL
7620 && h->root.u.def.section->output_section != NULL);
7621 }
7622
7623 /* If INSN is an opcode that may be used with an @tls operand, return
7624 the transformed insn for TLS optimisation, otherwise return 0. If
7625 REG is non-zero only match an insn with RB or RA equal to REG. */
7626
7627 unsigned int
7628 _bfd_elf_ppc_at_tls_transform (unsigned int insn, unsigned int reg)
7629 {
7630 unsigned int rtra;
7631
7632 if ((insn & (0x3f << 26)) != 31 << 26)
7633 return 0;
7634
7635 if (reg == 0 || ((insn >> 11) & 0x1f) == reg)
7636 rtra = insn & ((1 << 26) - (1 << 16));
7637 else if (((insn >> 16) & 0x1f) == reg)
7638 rtra = (insn & (0x1f << 21)) | ((insn & (0x1f << 11)) << 5);
7639 else
7640 return 0;
7641
7642 if ((insn & (0x3ff << 1)) == 266 << 1)
7643 /* add -> addi. */
7644 insn = 14 << 26;
7645 else if ((insn & (0x1f << 1)) == 23 << 1
7646 && ((insn & (0x1f << 6)) < 14 << 6
7647 || ((insn & (0x1f << 6)) >= 16 << 6
7648 && (insn & (0x1f << 6)) < 24 << 6)))
7649 /* load and store indexed -> dform. */
7650 insn = (32 | ((insn >> 6) & 0x1f)) << 26;
7651 else if ((insn & (((0x1a << 5) | 0x1f) << 1)) == 21 << 1)
7652 /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
7653 insn = ((58 | ((insn >> 6) & 4)) << 26) | ((insn >> 6) & 1);
7654 else if ((insn & (((0x1f << 5) | 0x1f) << 1)) == 341 << 1)
7655 /* lwax -> lwa. */
7656 insn = (58 << 26) | 2;
7657 else
7658 return 0;
7659 insn |= rtra;
7660 return insn;
7661 }
7662
7663 /* If INSN is an opcode that may be used with an @tprel operand, return
7664 the transformed insn for an undefined weak symbol, ie. with the
7665 thread pointer REG operand removed. Otherwise return 0. */
7666
7667 unsigned int
7668 _bfd_elf_ppc_at_tprel_transform (unsigned int insn, unsigned int reg)
7669 {
7670 if ((insn & (0x1f << 16)) == reg << 16
7671 && ((insn & (0x3f << 26)) == 14u << 26 /* addi */
7672 || (insn & (0x3f << 26)) == 15u << 26 /* addis */
7673 || (insn & (0x3f << 26)) == 32u << 26 /* lwz */
7674 || (insn & (0x3f << 26)) == 34u << 26 /* lbz */
7675 || (insn & (0x3f << 26)) == 36u << 26 /* stw */
7676 || (insn & (0x3f << 26)) == 38u << 26 /* stb */
7677 || (insn & (0x3f << 26)) == 40u << 26 /* lhz */
7678 || (insn & (0x3f << 26)) == 42u << 26 /* lha */
7679 || (insn & (0x3f << 26)) == 44u << 26 /* sth */
7680 || (insn & (0x3f << 26)) == 46u << 26 /* lmw */
7681 || (insn & (0x3f << 26)) == 47u << 26 /* stmw */
7682 || (insn & (0x3f << 26)) == 48u << 26 /* lfs */
7683 || (insn & (0x3f << 26)) == 50u << 26 /* lfd */
7684 || (insn & (0x3f << 26)) == 52u << 26 /* stfs */
7685 || (insn & (0x3f << 26)) == 54u << 26 /* stfd */
7686 || ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
7687 && (insn & 3) != 1)
7688 || ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */
7689 && ((insn & 3) == 0 || (insn & 3) == 3))))
7690 {
7691 insn &= ~(0x1f << 16);
7692 }
7693 else if ((insn & (0x1f << 21)) == reg << 21
7694 && ((insn & (0x3e << 26)) == 24u << 26 /* ori, oris */
7695 || (insn & (0x3e << 26)) == 26u << 26 /* xori,xoris */
7696 || (insn & (0x3e << 26)) == 28u << 26 /* andi,andis */))
7697 {
7698 insn &= ~(0x1f << 21);
7699 insn |= (insn & (0x1f << 16)) << 5;
7700 if ((insn & (0x3e << 26)) == 26 << 26 /* xori,xoris */)
7701 insn -= 2 >> 26; /* convert to ori,oris */
7702 }
7703 else
7704 insn = 0;
7705 return insn;
7706 }
7707
7708 static bfd_boolean
7709 is_insn_ds_form (unsigned int insn)
7710 {
7711 return ((insn & (0x3f << 26)) == 58u << 26 /* ld,ldu,lwa */
7712 || (insn & (0x3f << 26)) == 62u << 26 /* std,stdu,stq */
7713 || (insn & (0x3f << 26)) == 57u << 26 /* lfdp */
7714 || (insn & (0x3f << 26)) == 61u << 26 /* stfdp */);
7715 }
7716
7717 static bfd_boolean
7718 is_insn_dq_form (unsigned int insn)
7719 {
7720 return ((insn & (0x3f << 26)) == 56u << 26 /* lq */
7721 || ((insn & (0x3f << 26)) == (61u << 26) /* lxv, stxv */
7722 && (insn & 3) == 1));
7723 }
7724
7725 /* The RELOCATE_SECTION function is called by the ELF backend linker
7726 to handle the relocations for a section.
7727
7728 The relocs are always passed as Rela structures; if the section
7729 actually uses Rel structures, the r_addend field will always be
7730 zero.
7731
7732 This function is responsible for adjust the section contents as
7733 necessary, and (if using Rela relocs and generating a
7734 relocatable output file) adjusting the reloc addend as
7735 necessary.
7736
7737 This function does not have to worry about setting the reloc
7738 address or the reloc symbol index.
7739
7740 LOCAL_SYMS is a pointer to the swapped in local symbols.
7741
7742 LOCAL_SECTIONS is an array giving the section in the input file
7743 corresponding to the st_shndx field of each local symbol.
7744
7745 The global hash table entry for the global symbols can be found
7746 via elf_sym_hashes (input_bfd).
7747
7748 When generating relocatable output, this function must handle
7749 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
7750 going to be the section symbol corresponding to the output
7751 section, which means that the addend must be adjusted
7752 accordingly. */
7753
7754 static bfd_boolean
7755 ppc_elf_relocate_section (bfd *output_bfd,
7756 struct bfd_link_info *info,
7757 bfd *input_bfd,
7758 asection *input_section,
7759 bfd_byte *contents,
7760 Elf_Internal_Rela *relocs,
7761 Elf_Internal_Sym *local_syms,
7762 asection **local_sections)
7763 {
7764 Elf_Internal_Shdr *symtab_hdr;
7765 struct elf_link_hash_entry **sym_hashes;
7766 struct ppc_elf_link_hash_table *htab;
7767 Elf_Internal_Rela *rel;
7768 Elf_Internal_Rela *wrel;
7769 Elf_Internal_Rela *relend;
7770 Elf_Internal_Rela outrel;
7771 asection *got2;
7772 bfd_vma *local_got_offsets;
7773 bfd_boolean ret = TRUE;
7774 bfd_vma d_offset = (bfd_big_endian (output_bfd) ? 2 : 0);
7775 bfd_boolean is_vxworks_tls;
7776 unsigned int picfixup_size = 0;
7777 struct ppc_elf_relax_info *relax_info = NULL;
7778
7779 #ifdef DEBUG
7780 _bfd_error_handler ("ppc_elf_relocate_section called for %B section %A, "
7781 "%ld relocations%s",
7782 input_bfd, input_section,
7783 (long) input_section->reloc_count,
7784 (bfd_link_relocatable (info)) ? " (relocatable)" : "");
7785 #endif
7786
7787 got2 = bfd_get_section_by_name (input_bfd, ".got2");
7788
7789 /* Initialize howto table if not already done. */
7790 if (!ppc_elf_howto_table[R_PPC_ADDR32])
7791 ppc_elf_howto_init ();
7792
7793 htab = ppc_elf_hash_table (info);
7794 local_got_offsets = elf_local_got_offsets (input_bfd);
7795 symtab_hdr = &elf_symtab_hdr (input_bfd);
7796 sym_hashes = elf_sym_hashes (input_bfd);
7797 /* We have to handle relocations in vxworks .tls_vars sections
7798 specially, because the dynamic loader is 'weird'. */
7799 is_vxworks_tls = (htab->is_vxworks && bfd_link_pic (info)
7800 && !strcmp (input_section->output_section->name,
7801 ".tls_vars"));
7802 if (input_section->sec_info_type == SEC_INFO_TYPE_TARGET)
7803 relax_info = elf_section_data (input_section)->sec_info;
7804 rel = wrel = relocs;
7805 relend = relocs + input_section->reloc_count;
7806 for (; rel < relend; wrel++, rel++)
7807 {
7808 enum elf_ppc_reloc_type r_type;
7809 bfd_vma addend;
7810 bfd_reloc_status_type r;
7811 Elf_Internal_Sym *sym;
7812 asection *sec;
7813 struct elf_link_hash_entry *h;
7814 const char *sym_name;
7815 reloc_howto_type *howto;
7816 unsigned long r_symndx;
7817 bfd_vma relocation;
7818 bfd_vma branch_bit, from;
7819 bfd_boolean unresolved_reloc;
7820 bfd_boolean warned;
7821 unsigned int tls_type, tls_mask, tls_gd;
7822 struct plt_entry **ifunc;
7823 struct reloc_howto_struct alt_howto;
7824
7825 again:
7826 r_type = ELF32_R_TYPE (rel->r_info);
7827 sym = NULL;
7828 sec = NULL;
7829 h = NULL;
7830 unresolved_reloc = FALSE;
7831 warned = FALSE;
7832 r_symndx = ELF32_R_SYM (rel->r_info);
7833
7834 if (r_symndx < symtab_hdr->sh_info)
7835 {
7836 sym = local_syms + r_symndx;
7837 sec = local_sections[r_symndx];
7838 sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
7839
7840 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
7841 }
7842 else
7843 {
7844 bfd_boolean ignored;
7845
7846 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
7847 r_symndx, symtab_hdr, sym_hashes,
7848 h, sec, relocation,
7849 unresolved_reloc, warned, ignored);
7850
7851 sym_name = h->root.root.string;
7852 }
7853
7854 if (sec != NULL && discarded_section (sec))
7855 {
7856 /* For relocs against symbols from removed linkonce sections,
7857 or sections discarded by a linker script, we just want the
7858 section contents zeroed. Avoid any special processing. */
7859 howto = NULL;
7860 if (r_type < R_PPC_max)
7861 howto = ppc_elf_howto_table[r_type];
7862
7863 _bfd_clear_contents (howto, input_bfd, input_section,
7864 contents + rel->r_offset);
7865 wrel->r_offset = rel->r_offset;
7866 wrel->r_info = 0;
7867 wrel->r_addend = 0;
7868
7869 /* For ld -r, remove relocations in debug sections against
7870 sections defined in discarded sections. Not done for
7871 non-debug to preserve relocs in .eh_frame which the
7872 eh_frame editing code expects to be present. */
7873 if (bfd_link_relocatable (info)
7874 && (input_section->flags & SEC_DEBUGGING))
7875 wrel--;
7876
7877 continue;
7878 }
7879
7880 if (bfd_link_relocatable (info))
7881 {
7882 if (got2 != NULL
7883 && r_type == R_PPC_PLTREL24
7884 && rel->r_addend != 0)
7885 {
7886 /* R_PPC_PLTREL24 is rather special. If non-zero, the
7887 addend specifies the GOT pointer offset within .got2. */
7888 rel->r_addend += got2->output_offset;
7889 }
7890 if (r_type != R_PPC_RELAX_PLT
7891 && r_type != R_PPC_RELAX_PLTREL24
7892 && r_type != R_PPC_RELAX)
7893 goto copy_reloc;
7894 }
7895
7896 /* TLS optimizations. Replace instruction sequences and relocs
7897 based on information we collected in tls_optimize. We edit
7898 RELOCS so that --emit-relocs will output something sensible
7899 for the final instruction stream. */
7900 tls_mask = 0;
7901 tls_gd = 0;
7902 if (h != NULL)
7903 tls_mask = ((struct ppc_elf_link_hash_entry *) h)->tls_mask;
7904 else if (local_got_offsets != NULL)
7905 {
7906 struct plt_entry **local_plt;
7907 char *lgot_masks;
7908 local_plt
7909 = (struct plt_entry **) (local_got_offsets + symtab_hdr->sh_info);
7910 lgot_masks = (char *) (local_plt + symtab_hdr->sh_info);
7911 tls_mask = lgot_masks[r_symndx];
7912 }
7913
7914 /* Ensure reloc mapping code below stays sane. */
7915 if ((R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TLSGD16 & 3)
7916 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TLSGD16_LO & 3)
7917 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TLSGD16_HI & 3)
7918 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TLSGD16_HA & 3)
7919 || (R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TPREL16 & 3)
7920 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TPREL16_LO & 3)
7921 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TPREL16_HI & 3)
7922 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TPREL16_HA & 3))
7923 abort ();
7924 switch (r_type)
7925 {
7926 default:
7927 break;
7928
7929 case R_PPC_GOT_TPREL16:
7930 case R_PPC_GOT_TPREL16_LO:
7931 if ((tls_mask & TLS_TLS) != 0
7932 && (tls_mask & TLS_TPREL) == 0)
7933 {
7934 bfd_vma insn;
7935
7936 insn = bfd_get_32 (output_bfd,
7937 contents + rel->r_offset - d_offset);
7938 insn &= 31 << 21;
7939 insn |= 0x3c020000; /* addis 0,2,0 */
7940 bfd_put_32 (output_bfd, insn,
7941 contents + rel->r_offset - d_offset);
7942 r_type = R_PPC_TPREL16_HA;
7943 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7944 }
7945 break;
7946
7947 case R_PPC_TLS:
7948 if ((tls_mask & TLS_TLS) != 0
7949 && (tls_mask & TLS_TPREL) == 0)
7950 {
7951 bfd_vma insn;
7952
7953 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
7954 insn = _bfd_elf_ppc_at_tls_transform (insn, 2);
7955 if (insn == 0)
7956 abort ();
7957 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
7958 r_type = R_PPC_TPREL16_LO;
7959 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7960
7961 /* Was PPC_TLS which sits on insn boundary, now
7962 PPC_TPREL16_LO which is at low-order half-word. */
7963 rel->r_offset += d_offset;
7964 }
7965 break;
7966
7967 case R_PPC_GOT_TLSGD16_HI:
7968 case R_PPC_GOT_TLSGD16_HA:
7969 tls_gd = TLS_TPRELGD;
7970 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
7971 goto tls_gdld_hi;
7972 break;
7973
7974 case R_PPC_GOT_TLSLD16_HI:
7975 case R_PPC_GOT_TLSLD16_HA:
7976 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
7977 {
7978 tls_gdld_hi:
7979 if ((tls_mask & tls_gd) != 0)
7980 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
7981 + R_PPC_GOT_TPREL16);
7982 else
7983 {
7984 rel->r_offset -= d_offset;
7985 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
7986 r_type = R_PPC_NONE;
7987 }
7988 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7989 }
7990 break;
7991
7992 case R_PPC_GOT_TLSGD16:
7993 case R_PPC_GOT_TLSGD16_LO:
7994 tls_gd = TLS_TPRELGD;
7995 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
7996 goto tls_ldgd_opt;
7997 break;
7998
7999 case R_PPC_GOT_TLSLD16:
8000 case R_PPC_GOT_TLSLD16_LO:
8001 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
8002 {
8003 unsigned int insn1, insn2;
8004 bfd_vma offset;
8005
8006 tls_ldgd_opt:
8007 offset = (bfd_vma) -1;
8008 /* If not using the newer R_PPC_TLSGD/LD to mark
8009 __tls_get_addr calls, we must trust that the call
8010 stays with its arg setup insns, ie. that the next
8011 reloc is the __tls_get_addr call associated with
8012 the current reloc. Edit both insns. */
8013 if (input_section->has_tls_get_addr_call
8014 && rel + 1 < relend
8015 && branch_reloc_hash_match (input_bfd, rel + 1,
8016 htab->tls_get_addr))
8017 offset = rel[1].r_offset;
8018 /* We read the low GOT_TLS insn because we need to keep
8019 the destination reg. It may be something other than
8020 the usual r3, and moved to r3 before the call by
8021 intervening code. */
8022 insn1 = bfd_get_32 (output_bfd,
8023 contents + rel->r_offset - d_offset);
8024 if ((tls_mask & tls_gd) != 0)
8025 {
8026 /* IE */
8027 insn1 &= (0x1f << 21) | (0x1f << 16);
8028 insn1 |= 32 << 26; /* lwz */
8029 if (offset != (bfd_vma) -1)
8030 {
8031 rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
8032 insn2 = 0x7c631214; /* add 3,3,2 */
8033 bfd_put_32 (output_bfd, insn2, contents + offset);
8034 }
8035 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
8036 + R_PPC_GOT_TPREL16);
8037 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
8038 }
8039 else
8040 {
8041 /* LE */
8042 insn1 &= 0x1f << 21;
8043 insn1 |= 0x3c020000; /* addis r,2,0 */
8044 if (tls_gd == 0)
8045 {
8046 /* Was an LD reloc. */
8047 for (r_symndx = 0;
8048 r_symndx < symtab_hdr->sh_info;
8049 r_symndx++)
8050 if (local_sections[r_symndx] == sec)
8051 break;
8052 if (r_symndx >= symtab_hdr->sh_info)
8053 r_symndx = STN_UNDEF;
8054 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
8055 if (r_symndx != STN_UNDEF)
8056 rel->r_addend -= (local_syms[r_symndx].st_value
8057 + sec->output_offset
8058 + sec->output_section->vma);
8059 }
8060 r_type = R_PPC_TPREL16_HA;
8061 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
8062 if (offset != (bfd_vma) -1)
8063 {
8064 rel[1].r_info = ELF32_R_INFO (r_symndx, R_PPC_TPREL16_LO);
8065 rel[1].r_offset = offset + d_offset;
8066 rel[1].r_addend = rel->r_addend;
8067 insn2 = 0x38630000; /* addi 3,3,0 */
8068 bfd_put_32 (output_bfd, insn2, contents + offset);
8069 }
8070 }
8071 bfd_put_32 (output_bfd, insn1,
8072 contents + rel->r_offset - d_offset);
8073 if (tls_gd == 0)
8074 {
8075 /* We changed the symbol on an LD reloc. Start over
8076 in order to get h, sym, sec etc. right. */
8077 goto again;
8078 }
8079 }
8080 break;
8081
8082 case R_PPC_TLSGD:
8083 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
8084 {
8085 unsigned int insn2;
8086 bfd_vma offset = rel->r_offset;
8087
8088 if ((tls_mask & TLS_TPRELGD) != 0)
8089 {
8090 /* IE */
8091 r_type = R_PPC_NONE;
8092 insn2 = 0x7c631214; /* add 3,3,2 */
8093 }
8094 else
8095 {
8096 /* LE */
8097 r_type = R_PPC_TPREL16_LO;
8098 rel->r_offset += d_offset;
8099 insn2 = 0x38630000; /* addi 3,3,0 */
8100 }
8101 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
8102 bfd_put_32 (output_bfd, insn2, contents + offset);
8103 /* Zap the reloc on the _tls_get_addr call too. */
8104 BFD_ASSERT (offset == rel[1].r_offset);
8105 rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
8106 }
8107 break;
8108
8109 case R_PPC_TLSLD:
8110 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
8111 {
8112 unsigned int insn2;
8113
8114 for (r_symndx = 0;
8115 r_symndx < symtab_hdr->sh_info;
8116 r_symndx++)
8117 if (local_sections[r_symndx] == sec)
8118 break;
8119 if (r_symndx >= symtab_hdr->sh_info)
8120 r_symndx = STN_UNDEF;
8121 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
8122 if (r_symndx != STN_UNDEF)
8123 rel->r_addend -= (local_syms[r_symndx].st_value
8124 + sec->output_offset
8125 + sec->output_section->vma);
8126
8127 rel->r_info = ELF32_R_INFO (r_symndx, R_PPC_TPREL16_LO);
8128 rel->r_offset += d_offset;
8129 insn2 = 0x38630000; /* addi 3,3,0 */
8130 bfd_put_32 (output_bfd, insn2,
8131 contents + rel->r_offset - d_offset);
8132 /* Zap the reloc on the _tls_get_addr call too. */
8133 BFD_ASSERT (rel->r_offset - d_offset == rel[1].r_offset);
8134 rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
8135 goto again;
8136 }
8137 break;
8138 }
8139
8140 /* Handle other relocations that tweak non-addend part of insn. */
8141 branch_bit = 0;
8142 switch (r_type)
8143 {
8144 default:
8145 break;
8146
8147 /* Branch taken prediction relocations. */
8148 case R_PPC_ADDR14_BRTAKEN:
8149 case R_PPC_REL14_BRTAKEN:
8150 branch_bit = BRANCH_PREDICT_BIT;
8151 /* Fall thru */
8152
8153 /* Branch not taken prediction relocations. */
8154 case R_PPC_ADDR14_BRNTAKEN:
8155 case R_PPC_REL14_BRNTAKEN:
8156 {
8157 bfd_vma insn;
8158
8159 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
8160 insn &= ~BRANCH_PREDICT_BIT;
8161 insn |= branch_bit;
8162
8163 from = (rel->r_offset
8164 + input_section->output_offset
8165 + input_section->output_section->vma);
8166
8167 /* Invert 'y' bit if not the default. */
8168 if ((bfd_signed_vma) (relocation + rel->r_addend - from) < 0)
8169 insn ^= BRANCH_PREDICT_BIT;
8170
8171 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
8172 break;
8173 }
8174 }
8175
8176 if (ELIMINATE_COPY_RELOCS
8177 && h != NULL
8178 && !h->def_regular
8179 && h->protected_def
8180 && ppc_elf_hash_entry (h)->has_addr16_ha
8181 && ppc_elf_hash_entry (h)->has_addr16_lo
8182 && htab->params->pic_fixup > 0)
8183 {
8184 /* Convert lis;addi or lis;load/store accessing a protected
8185 variable defined in a shared library to PIC. */
8186 unsigned int insn;
8187
8188 if (r_type == R_PPC_ADDR16_HA)
8189 {
8190 insn = bfd_get_32 (output_bfd,
8191 contents + rel->r_offset - d_offset);
8192 if ((insn & (0x3f << 26)) == (15u << 26)
8193 && (insn & (0x1f << 16)) == 0 /* lis */)
8194 {
8195 bfd_byte *p;
8196 bfd_vma off;
8197 bfd_vma got_addr;
8198
8199 p = (contents + input_section->size
8200 - relax_info->workaround_size
8201 - relax_info->picfixup_size
8202 + picfixup_size);
8203 off = (p - contents) - (rel->r_offset - d_offset);
8204 if (off > 0x1fffffc || (off & 3) != 0)
8205 info->callbacks->einfo
8206 (_("%P: %H: fixup branch overflow\n"),
8207 input_bfd, input_section, rel->r_offset);
8208
8209 bfd_put_32 (output_bfd, B | off,
8210 contents + rel->r_offset - d_offset);
8211 got_addr = (htab->got->output_section->vma
8212 + htab->got->output_offset
8213 + (h->got.offset & ~1));
8214 wrel->r_offset = (p - contents) + d_offset;
8215 wrel->r_info = ELF32_R_INFO (0, R_PPC_ADDR16_HA);
8216 wrel->r_addend = got_addr;
8217 insn &= ~0xffff;
8218 insn |= ((unsigned int )(got_addr + 0x8000) >> 16) & 0xffff;
8219 bfd_put_32 (output_bfd, insn, p);
8220
8221 /* Convert lis to lwz, loading address from GOT. */
8222 insn &= ~0xffff;
8223 insn ^= (32u ^ 15u) << 26;
8224 insn |= (insn & (0x1f << 21)) >> 5;
8225 insn |= got_addr & 0xffff;
8226 bfd_put_32 (output_bfd, insn, p + 4);
8227
8228 bfd_put_32 (output_bfd, B | ((-4 - off) & 0x3ffffff), p + 8);
8229 picfixup_size += 12;
8230
8231 /* Use one of the spare relocs, so --emit-relocs
8232 output is reasonable. */
8233 memmove (rel + 1, rel, (relend - rel - 1) * sizeof (*rel));
8234 wrel++, rel++;
8235 rel->r_offset = wrel[-1].r_offset + 4;
8236 rel->r_info = ELF32_R_INFO (0, R_PPC_ADDR16_LO);
8237 rel->r_addend = wrel[-1].r_addend;
8238
8239 /* Continue on as if we had a got reloc, to output
8240 dynamic reloc. */
8241 r_type = R_PPC_GOT16_LO;
8242 }
8243 else
8244 info->callbacks->einfo
8245 (_("%P: %H: error: %s with unexpected instruction %x\n"),
8246 input_bfd, input_section, rel->r_offset,
8247 "R_PPC_ADDR16_HA", insn);
8248 }
8249 else if (r_type == R_PPC_ADDR16_LO)
8250 {
8251 insn = bfd_get_32 (output_bfd,
8252 contents + rel->r_offset - d_offset);
8253 if ((insn & (0x3f << 26)) == 14u << 26 /* addi */
8254 || (insn & (0x3f << 26)) == 32u << 26 /* lwz */
8255 || (insn & (0x3f << 26)) == 34u << 26 /* lbz */
8256 || (insn & (0x3f << 26)) == 36u << 26 /* stw */
8257 || (insn & (0x3f << 26)) == 38u << 26 /* stb */
8258 || (insn & (0x3f << 26)) == 40u << 26 /* lhz */
8259 || (insn & (0x3f << 26)) == 42u << 26 /* lha */
8260 || (insn & (0x3f << 26)) == 44u << 26 /* sth */
8261 || (insn & (0x3f << 26)) == 46u << 26 /* lmw */
8262 || (insn & (0x3f << 26)) == 47u << 26 /* stmw */
8263 || (insn & (0x3f << 26)) == 48u << 26 /* lfs */
8264 || (insn & (0x3f << 26)) == 50u << 26 /* lfd */
8265 || (insn & (0x3f << 26)) == 52u << 26 /* stfs */
8266 || (insn & (0x3f << 26)) == 54u << 26 /* stfd */
8267 || ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
8268 && (insn & 3) != 1)
8269 || ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */
8270 && ((insn & 3) == 0 || (insn & 3) == 3)))
8271 {
8272 /* Arrange to apply the reloc addend, if any. */
8273 relocation = 0;
8274 unresolved_reloc = FALSE;
8275 rel->r_info = ELF32_R_INFO (0, r_type);
8276 }
8277 else
8278 info->callbacks->einfo
8279 (_("%P: %H: error: %s with unexpected instruction %x\n"),
8280 input_bfd, input_section, rel->r_offset,
8281 "R_PPC_ADDR16_LO", insn);
8282 }
8283 }
8284
8285 ifunc = NULL;
8286 if (!htab->is_vxworks)
8287 {
8288 struct plt_entry *ent;
8289
8290 if (h != NULL)
8291 {
8292 if (h->type == STT_GNU_IFUNC)
8293 ifunc = &h->plt.plist;
8294 }
8295 else if (local_got_offsets != NULL
8296 && ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
8297 {
8298 struct plt_entry **local_plt;
8299
8300 local_plt = (struct plt_entry **) (local_got_offsets
8301 + symtab_hdr->sh_info);
8302 ifunc = local_plt + r_symndx;
8303 }
8304
8305 ent = NULL;
8306 if (ifunc != NULL
8307 && (!bfd_link_pic (info)
8308 || is_branch_reloc (r_type)))
8309 {
8310 addend = 0;
8311 if (r_type == R_PPC_PLTREL24 && bfd_link_pic (info))
8312 addend = rel->r_addend;
8313 ent = find_plt_ent (ifunc, got2, addend);
8314 }
8315 if (ent != NULL)
8316 {
8317 if (bfd_link_pic (info)
8318 && ent->sec != got2
8319 && htab->plt_type != PLT_NEW
8320 && (!htab->elf.dynamic_sections_created
8321 || h == NULL
8322 || h->dynindx == -1))
8323 {
8324 /* Uh oh, we are going to create a pic glink stub
8325 for an ifunc (here for h == NULL and later in
8326 finish_dynamic_symbol for h != NULL), and
8327 apparently are using code compiled with
8328 -mbss-plt. The difficulty is that -mbss-plt code
8329 gives no indication via a magic PLTREL24 addend
8330 whether r30 is equal to _GLOBAL_OFFSET_TABLE_ or
8331 is pointing into a .got2 section (and how far
8332 into .got2). */
8333 info->callbacks->einfo
8334 (_("%X%P: %H: unsupported bss-plt -fPIC ifunc %s\n"),
8335 input_bfd, input_section, rel->r_offset, sym_name);
8336 }
8337 if (h == NULL && (ent->plt.offset & 1) == 0)
8338 {
8339 Elf_Internal_Rela rela;
8340 bfd_byte *loc;
8341
8342 rela.r_offset = (htab->iplt->output_section->vma
8343 + htab->iplt->output_offset
8344 + ent->plt.offset);
8345 rela.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
8346 rela.r_addend = relocation;
8347 loc = htab->reliplt->contents;
8348 loc += (htab->reliplt->reloc_count++
8349 * sizeof (Elf32_External_Rela));
8350 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
8351
8352 ent->plt.offset |= 1;
8353 }
8354 if (h == NULL && (ent->glink_offset & 1) == 0)
8355 {
8356 unsigned char *p = ((unsigned char *) htab->glink->contents
8357 + ent->glink_offset);
8358 write_glink_stub (ent, htab->iplt, p, info);
8359 ent->glink_offset |= 1;
8360 }
8361
8362 unresolved_reloc = FALSE;
8363 if (htab->plt_type == PLT_NEW
8364 || !htab->elf.dynamic_sections_created
8365 || h == NULL
8366 || h->dynindx == -1)
8367 relocation = (htab->glink->output_section->vma
8368 + htab->glink->output_offset
8369 + (ent->glink_offset & ~1));
8370 else
8371 relocation = (htab->plt->output_section->vma
8372 + htab->plt->output_offset
8373 + ent->plt.offset);
8374 }
8375 }
8376
8377 addend = rel->r_addend;
8378 tls_type = 0;
8379 howto = NULL;
8380 if (r_type < R_PPC_max)
8381 howto = ppc_elf_howto_table[r_type];
8382 switch (r_type)
8383 {
8384 default:
8385 info->callbacks->einfo
8386 (_("%P: %B: unknown relocation type %d for symbol %s\n"),
8387 input_bfd, (int) r_type, sym_name);
8388
8389 bfd_set_error (bfd_error_bad_value);
8390 ret = FALSE;
8391 goto copy_reloc;
8392
8393 case R_PPC_NONE:
8394 case R_PPC_TLS:
8395 case R_PPC_TLSGD:
8396 case R_PPC_TLSLD:
8397 case R_PPC_EMB_MRKREF:
8398 case R_PPC_GNU_VTINHERIT:
8399 case R_PPC_GNU_VTENTRY:
8400 goto copy_reloc;
8401
8402 /* GOT16 relocations. Like an ADDR16 using the symbol's
8403 address in the GOT as relocation value instead of the
8404 symbol's value itself. Also, create a GOT entry for the
8405 symbol and put the symbol value there. */
8406 case R_PPC_GOT_TLSGD16:
8407 case R_PPC_GOT_TLSGD16_LO:
8408 case R_PPC_GOT_TLSGD16_HI:
8409 case R_PPC_GOT_TLSGD16_HA:
8410 tls_type = TLS_TLS | TLS_GD;
8411 goto dogot;
8412
8413 case R_PPC_GOT_TLSLD16:
8414 case R_PPC_GOT_TLSLD16_LO:
8415 case R_PPC_GOT_TLSLD16_HI:
8416 case R_PPC_GOT_TLSLD16_HA:
8417 tls_type = TLS_TLS | TLS_LD;
8418 goto dogot;
8419
8420 case R_PPC_GOT_TPREL16:
8421 case R_PPC_GOT_TPREL16_LO:
8422 case R_PPC_GOT_TPREL16_HI:
8423 case R_PPC_GOT_TPREL16_HA:
8424 tls_type = TLS_TLS | TLS_TPREL;
8425 goto dogot;
8426
8427 case R_PPC_GOT_DTPREL16:
8428 case R_PPC_GOT_DTPREL16_LO:
8429 case R_PPC_GOT_DTPREL16_HI:
8430 case R_PPC_GOT_DTPREL16_HA:
8431 tls_type = TLS_TLS | TLS_DTPREL;
8432 goto dogot;
8433
8434 case R_PPC_GOT16:
8435 case R_PPC_GOT16_LO:
8436 case R_PPC_GOT16_HI:
8437 case R_PPC_GOT16_HA:
8438 tls_mask = 0;
8439 dogot:
8440 {
8441 /* Relocation is to the entry for this symbol in the global
8442 offset table. */
8443 bfd_vma off;
8444 bfd_vma *offp;
8445 unsigned long indx;
8446
8447 if (htab->got == NULL)
8448 abort ();
8449
8450 indx = 0;
8451 if (tls_type == (TLS_TLS | TLS_LD)
8452 && (h == NULL
8453 || !h->def_dynamic))
8454 offp = &htab->tlsld_got.offset;
8455 else if (h != NULL)
8456 {
8457 bfd_boolean dyn;
8458 dyn = htab->elf.dynamic_sections_created;
8459 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, bfd_link_pic (info), h)
8460 || (bfd_link_pic (info)
8461 && SYMBOL_REFERENCES_LOCAL (info, h)))
8462 /* This is actually a static link, or it is a
8463 -Bsymbolic link and the symbol is defined
8464 locally, or the symbol was forced to be local
8465 because of a version file. */
8466 ;
8467 else
8468 {
8469 BFD_ASSERT (h->dynindx != -1);
8470 indx = h->dynindx;
8471 unresolved_reloc = FALSE;
8472 }
8473 offp = &h->got.offset;
8474 }
8475 else
8476 {
8477 if (local_got_offsets == NULL)
8478 abort ();
8479 offp = &local_got_offsets[r_symndx];
8480 }
8481
8482 /* The offset must always be a multiple of 4. We use the
8483 least significant bit to record whether we have already
8484 processed this entry. */
8485 off = *offp;
8486 if ((off & 1) != 0)
8487 off &= ~1;
8488 else
8489 {
8490 unsigned int tls_m = (tls_mask
8491 & (TLS_LD | TLS_GD | TLS_DTPREL
8492 | TLS_TPREL | TLS_TPRELGD));
8493
8494 if (offp == &htab->tlsld_got.offset)
8495 tls_m = TLS_LD;
8496 else if (h == NULL
8497 || !h->def_dynamic)
8498 tls_m &= ~TLS_LD;
8499
8500 /* We might have multiple got entries for this sym.
8501 Initialize them all. */
8502 do
8503 {
8504 int tls_ty = 0;
8505
8506 if ((tls_m & TLS_LD) != 0)
8507 {
8508 tls_ty = TLS_TLS | TLS_LD;
8509 tls_m &= ~TLS_LD;
8510 }
8511 else if ((tls_m & TLS_GD) != 0)
8512 {
8513 tls_ty = TLS_TLS | TLS_GD;
8514 tls_m &= ~TLS_GD;
8515 }
8516 else if ((tls_m & TLS_DTPREL) != 0)
8517 {
8518 tls_ty = TLS_TLS | TLS_DTPREL;
8519 tls_m &= ~TLS_DTPREL;
8520 }
8521 else if ((tls_m & (TLS_TPREL | TLS_TPRELGD)) != 0)
8522 {
8523 tls_ty = TLS_TLS | TLS_TPREL;
8524 tls_m = 0;
8525 }
8526
8527 /* Generate relocs for the dynamic linker. */
8528 if ((bfd_link_pic (info) || indx != 0)
8529 && (offp == &htab->tlsld_got.offset
8530 || h == NULL
8531 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
8532 || h->root.type != bfd_link_hash_undefweak))
8533 {
8534 asection *rsec = htab->relgot;
8535 bfd_byte * loc;
8536
8537 if (ifunc != NULL)
8538 rsec = htab->reliplt;
8539 outrel.r_offset = (htab->got->output_section->vma
8540 + htab->got->output_offset
8541 + off);
8542 outrel.r_addend = 0;
8543 if (tls_ty & (TLS_LD | TLS_GD))
8544 {
8545 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPMOD32);
8546 if (tls_ty == (TLS_TLS | TLS_GD))
8547 {
8548 loc = rsec->contents;
8549 loc += (rsec->reloc_count++
8550 * sizeof (Elf32_External_Rela));
8551 bfd_elf32_swap_reloca_out (output_bfd,
8552 &outrel, loc);
8553 outrel.r_offset += 4;
8554 outrel.r_info
8555 = ELF32_R_INFO (indx, R_PPC_DTPREL32);
8556 }
8557 }
8558 else if (tls_ty == (TLS_TLS | TLS_DTPREL))
8559 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPREL32);
8560 else if (tls_ty == (TLS_TLS | TLS_TPREL))
8561 outrel.r_info = ELF32_R_INFO (indx, R_PPC_TPREL32);
8562 else if (indx != 0)
8563 outrel.r_info = ELF32_R_INFO (indx, R_PPC_GLOB_DAT);
8564 else if (ifunc != NULL)
8565 outrel.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
8566 else
8567 outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
8568 if (indx == 0 && tls_ty != (TLS_TLS | TLS_LD))
8569 {
8570 outrel.r_addend += relocation;
8571 if (tls_ty & (TLS_GD | TLS_DTPREL | TLS_TPREL))
8572 {
8573 if (htab->elf.tls_sec == NULL)
8574 outrel.r_addend = 0;
8575 else
8576 outrel.r_addend -= htab->elf.tls_sec->vma;
8577 }
8578 }
8579 loc = rsec->contents;
8580 loc += (rsec->reloc_count++
8581 * sizeof (Elf32_External_Rela));
8582 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
8583 }
8584
8585 /* Init the .got section contents if we're not
8586 emitting a reloc. */
8587 else
8588 {
8589 bfd_vma value = relocation;
8590
8591 if (tls_ty == (TLS_TLS | TLS_LD))
8592 value = 1;
8593 else if (tls_ty != 0)
8594 {
8595 if (htab->elf.tls_sec == NULL)
8596 value = 0;
8597 else
8598 {
8599 value -= htab->elf.tls_sec->vma + DTP_OFFSET;
8600 if (tls_ty == (TLS_TLS | TLS_TPREL))
8601 value += DTP_OFFSET - TP_OFFSET;
8602 }
8603
8604 if (tls_ty == (TLS_TLS | TLS_GD))
8605 {
8606 bfd_put_32 (output_bfd, value,
8607 htab->got->contents + off + 4);
8608 value = 1;
8609 }
8610 }
8611 bfd_put_32 (output_bfd, value,
8612 htab->got->contents + off);
8613 }
8614
8615 off += 4;
8616 if (tls_ty & (TLS_LD | TLS_GD))
8617 off += 4;
8618 }
8619 while (tls_m != 0);
8620
8621 off = *offp;
8622 *offp = off | 1;
8623 }
8624
8625 if (off >= (bfd_vma) -2)
8626 abort ();
8627
8628 if ((tls_type & TLS_TLS) != 0)
8629 {
8630 if (tls_type != (TLS_TLS | TLS_LD))
8631 {
8632 if ((tls_mask & TLS_LD) != 0
8633 && !(h == NULL
8634 || !h->def_dynamic))
8635 off += 8;
8636 if (tls_type != (TLS_TLS | TLS_GD))
8637 {
8638 if ((tls_mask & TLS_GD) != 0)
8639 off += 8;
8640 if (tls_type != (TLS_TLS | TLS_DTPREL))
8641 {
8642 if ((tls_mask & TLS_DTPREL) != 0)
8643 off += 4;
8644 }
8645 }
8646 }
8647 }
8648
8649 /* If here for a picfixup, we're done. */
8650 if (r_type != ELF32_R_TYPE (rel->r_info))
8651 goto copy_reloc;
8652
8653 relocation = (htab->got->output_section->vma
8654 + htab->got->output_offset
8655 + off
8656 - SYM_VAL (htab->elf.hgot));
8657
8658 /* Addends on got relocations don't make much sense.
8659 x+off@got is actually x@got+off, and since the got is
8660 generated by a hash table traversal, the value in the
8661 got at entry m+n bears little relation to the entry m. */
8662 if (addend != 0)
8663 info->callbacks->einfo
8664 (_("%P: %H: non-zero addend on %s reloc against `%s'\n"),
8665 input_bfd, input_section, rel->r_offset,
8666 howto->name,
8667 sym_name);
8668 }
8669 break;
8670
8671 /* Relocations that need no special processing. */
8672 case R_PPC_LOCAL24PC:
8673 /* It makes no sense to point a local relocation
8674 at a symbol not in this object. */
8675 if (unresolved_reloc)
8676 {
8677 (*info->callbacks->undefined_symbol) (info,
8678 h->root.root.string,
8679 input_bfd,
8680 input_section,
8681 rel->r_offset,
8682 TRUE);
8683 goto copy_reloc;
8684 }
8685 if (h != NULL && h->type == STT_GNU_IFUNC && bfd_link_pic (info))
8686 {
8687 /* @local on an ifunc does not really make sense since
8688 the ifunc resolver can take you anywhere. More
8689 seriously, calls to ifuncs must go through a plt call
8690 stub, and for pic the plt call stubs uses r30 to
8691 access the PLT. The problem is that a call that is
8692 local won't have the +32k reloc addend trick marking
8693 -fPIC code, so the linker won't know whether r30 is
8694 _GLOBAL_OFFSET_TABLE_ or pointing into a .got2 section. */
8695 info->callbacks->einfo (_("%X%P: %H: @local call to ifunc %s\n"),
8696 input_bfd, input_section, rel->r_offset,
8697 h->root.root.string);
8698 }
8699 break;
8700
8701 case R_PPC_DTPREL16:
8702 case R_PPC_DTPREL16_LO:
8703 case R_PPC_DTPREL16_HI:
8704 case R_PPC_DTPREL16_HA:
8705 if (htab->elf.tls_sec != NULL)
8706 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
8707 break;
8708
8709 /* Relocations that may need to be propagated if this is a shared
8710 object. */
8711 case R_PPC_TPREL16:
8712 case R_PPC_TPREL16_LO:
8713 case R_PPC_TPREL16_HI:
8714 case R_PPC_TPREL16_HA:
8715 if (h != NULL
8716 && h->root.type == bfd_link_hash_undefweak
8717 && h->dynindx == -1)
8718 {
8719 /* Make this relocation against an undefined weak symbol
8720 resolve to zero. This is really just a tweak, since
8721 code using weak externs ought to check that they are
8722 defined before using them. */
8723 bfd_byte *p = contents + rel->r_offset - d_offset;
8724 unsigned int insn = bfd_get_32 (output_bfd, p);
8725 insn = _bfd_elf_ppc_at_tprel_transform (insn, 2);
8726 if (insn != 0)
8727 bfd_put_32 (output_bfd, insn, p);
8728 break;
8729 }
8730 if (htab->elf.tls_sec != NULL)
8731 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
8732 /* The TPREL16 relocs shouldn't really be used in shared
8733 libs as they will result in DT_TEXTREL being set, but
8734 support them anyway. */
8735 goto dodyn;
8736
8737 case R_PPC_TPREL32:
8738 if (htab->elf.tls_sec != NULL)
8739 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
8740 goto dodyn;
8741
8742 case R_PPC_DTPREL32:
8743 if (htab->elf.tls_sec != NULL)
8744 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
8745 goto dodyn;
8746
8747 case R_PPC_DTPMOD32:
8748 relocation = 1;
8749 addend = 0;
8750 goto dodyn;
8751
8752 case R_PPC_REL16:
8753 case R_PPC_REL16_LO:
8754 case R_PPC_REL16_HI:
8755 case R_PPC_REL16_HA:
8756 case R_PPC_REL16DX_HA:
8757 break;
8758
8759 case R_PPC_REL32:
8760 if (h == NULL || h == htab->elf.hgot)
8761 break;
8762 /* fall through */
8763
8764 case R_PPC_ADDR32:
8765 case R_PPC_ADDR16:
8766 case R_PPC_ADDR16_LO:
8767 case R_PPC_ADDR16_HI:
8768 case R_PPC_ADDR16_HA:
8769 case R_PPC_UADDR32:
8770 case R_PPC_UADDR16:
8771 goto dodyn;
8772
8773 case R_PPC_VLE_REL8:
8774 case R_PPC_VLE_REL15:
8775 case R_PPC_VLE_REL24:
8776 case R_PPC_REL24:
8777 case R_PPC_REL14:
8778 case R_PPC_REL14_BRTAKEN:
8779 case R_PPC_REL14_BRNTAKEN:
8780 /* If these relocations are not to a named symbol, they can be
8781 handled right here, no need to bother the dynamic linker. */
8782 if (SYMBOL_CALLS_LOCAL (info, h)
8783 || h == htab->elf.hgot)
8784 break;
8785 /* fall through */
8786
8787 case R_PPC_ADDR24:
8788 case R_PPC_ADDR14:
8789 case R_PPC_ADDR14_BRTAKEN:
8790 case R_PPC_ADDR14_BRNTAKEN:
8791 if (h != NULL && !bfd_link_pic (info))
8792 break;
8793 /* fall through */
8794
8795 dodyn:
8796 if ((input_section->flags & SEC_ALLOC) == 0
8797 || is_vxworks_tls)
8798 break;
8799
8800 if ((bfd_link_pic (info)
8801 && !(h != NULL
8802 && ((h->root.type == bfd_link_hash_undefined
8803 && (ELF_ST_VISIBILITY (h->other) == STV_HIDDEN
8804 || ELF_ST_VISIBILITY (h->other) == STV_INTERNAL))
8805 || (h->root.type == bfd_link_hash_undefweak
8806 && ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)))
8807 && (must_be_dyn_reloc (info, r_type)
8808 || !SYMBOL_CALLS_LOCAL (info, h)))
8809 || (ELIMINATE_COPY_RELOCS
8810 && !bfd_link_pic (info)
8811 && h != NULL
8812 && h->dynindx != -1
8813 && !h->non_got_ref
8814 && !h->def_regular
8815 && !(h->protected_def
8816 && ppc_elf_hash_entry (h)->has_addr16_ha
8817 && ppc_elf_hash_entry (h)->has_addr16_lo
8818 && htab->params->pic_fixup > 0)))
8819 {
8820 int skip;
8821 bfd_byte *loc;
8822 asection *sreloc;
8823 #ifdef DEBUG
8824 fprintf (stderr, "ppc_elf_relocate_section needs to "
8825 "create relocation for %s\n",
8826 (h && h->root.root.string
8827 ? h->root.root.string : "<unknown>"));
8828 #endif
8829
8830 /* When generating a shared object, these relocations
8831 are copied into the output file to be resolved at run
8832 time. */
8833 sreloc = elf_section_data (input_section)->sreloc;
8834 if (ifunc)
8835 sreloc = htab->reliplt;
8836 if (sreloc == NULL)
8837 return FALSE;
8838
8839 skip = 0;
8840 outrel.r_offset = _bfd_elf_section_offset (output_bfd, info,
8841 input_section,
8842 rel->r_offset);
8843 if (outrel.r_offset == (bfd_vma) -1
8844 || outrel.r_offset == (bfd_vma) -2)
8845 skip = (int) outrel.r_offset;
8846 outrel.r_offset += (input_section->output_section->vma
8847 + input_section->output_offset);
8848
8849 if (skip)
8850 memset (&outrel, 0, sizeof outrel);
8851 else if ((h != NULL
8852 && (h->root.type == bfd_link_hash_undefined
8853 || h->root.type == bfd_link_hash_undefweak))
8854 || !SYMBOL_REFERENCES_LOCAL (info, h))
8855 {
8856 BFD_ASSERT (h->dynindx != -1);
8857 unresolved_reloc = FALSE;
8858 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
8859 outrel.r_addend = rel->r_addend;
8860 }
8861 else
8862 {
8863 outrel.r_addend = relocation + rel->r_addend;
8864
8865 if (r_type != R_PPC_ADDR32)
8866 {
8867 long indx = 0;
8868
8869 if (ifunc != NULL)
8870 {
8871 /* If we get here when building a static
8872 executable, then the libc startup function
8873 responsible for applying indirect function
8874 relocations is going to complain about
8875 the reloc type.
8876 If we get here when building a dynamic
8877 executable, it will be because we have
8878 a text relocation. The dynamic loader
8879 will set the text segment writable and
8880 non-executable to apply text relocations.
8881 So we'll segfault when trying to run the
8882 indirection function to resolve the reloc. */
8883 info->callbacks->einfo
8884 (_("%P: %H: relocation %s for indirect "
8885 "function %s unsupported\n"),
8886 input_bfd, input_section, rel->r_offset,
8887 howto->name,
8888 sym_name);
8889 ret = FALSE;
8890 }
8891 else if (r_symndx == STN_UNDEF || bfd_is_abs_section (sec))
8892 ;
8893 else if (sec == NULL || sec->owner == NULL)
8894 {
8895 bfd_set_error (bfd_error_bad_value);
8896 ret = FALSE;
8897 }
8898 else
8899 {
8900 asection *osec;
8901
8902 /* We are turning this relocation into one
8903 against a section symbol. It would be
8904 proper to subtract the symbol's value,
8905 osec->vma, from the emitted reloc addend,
8906 but ld.so expects buggy relocs.
8907 FIXME: Why not always use a zero index? */
8908 osec = sec->output_section;
8909 indx = elf_section_data (osec)->dynindx;
8910 if (indx == 0)
8911 {
8912 osec = htab->elf.text_index_section;
8913 indx = elf_section_data (osec)->dynindx;
8914 }
8915 BFD_ASSERT (indx != 0);
8916 #ifdef DEBUG
8917 if (indx == 0)
8918 printf ("indx=%ld section=%s flags=%08x name=%s\n",
8919 indx, osec->name, osec->flags,
8920 h->root.root.string);
8921 #endif
8922 }
8923
8924 outrel.r_info = ELF32_R_INFO (indx, r_type);
8925 }
8926 else if (ifunc != NULL)
8927 outrel.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
8928 else
8929 outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
8930 }
8931
8932 loc = sreloc->contents;
8933 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
8934 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
8935
8936 if (skip == -1)
8937 goto copy_reloc;
8938
8939 /* This reloc will be computed at runtime. We clear the memory
8940 so that it contains predictable value. */
8941 if (! skip
8942 && ((input_section->flags & SEC_ALLOC) != 0
8943 || ELF32_R_TYPE (outrel.r_info) != R_PPC_RELATIVE))
8944 {
8945 relocation = howto->pc_relative ? outrel.r_offset : 0;
8946 addend = 0;
8947 break;
8948 }
8949 }
8950 break;
8951
8952 case R_PPC_RELAX_PLT:
8953 case R_PPC_RELAX_PLTREL24:
8954 if (h != NULL)
8955 {
8956 struct plt_entry *ent;
8957 bfd_vma got2_addend = 0;
8958
8959 if (r_type == R_PPC_RELAX_PLTREL24)
8960 {
8961 if (bfd_link_pic (info))
8962 got2_addend = addend;
8963 addend = 0;
8964 }
8965 ent = find_plt_ent (&h->plt.plist, got2, got2_addend);
8966 if (htab->plt_type == PLT_NEW)
8967 relocation = (htab->glink->output_section->vma
8968 + htab->glink->output_offset
8969 + ent->glink_offset);
8970 else
8971 relocation = (htab->plt->output_section->vma
8972 + htab->plt->output_offset
8973 + ent->plt.offset);
8974 }
8975 /* Fall thru */
8976
8977 case R_PPC_RELAX:
8978 {
8979 const int *stub;
8980 size_t size;
8981 size_t insn_offset = rel->r_offset;
8982 unsigned int insn;
8983
8984 if (bfd_link_pic (info))
8985 {
8986 relocation -= (input_section->output_section->vma
8987 + input_section->output_offset
8988 + rel->r_offset - 4);
8989 stub = shared_stub_entry;
8990 bfd_put_32 (output_bfd, stub[0], contents + insn_offset - 12);
8991 bfd_put_32 (output_bfd, stub[1], contents + insn_offset - 8);
8992 bfd_put_32 (output_bfd, stub[2], contents + insn_offset - 4);
8993 stub += 3;
8994 size = ARRAY_SIZE (shared_stub_entry) - 3;
8995 }
8996 else
8997 {
8998 stub = stub_entry;
8999 size = ARRAY_SIZE (stub_entry);
9000 }
9001
9002 relocation += addend;
9003 if (bfd_link_relocatable (info))
9004 relocation = 0;
9005
9006 /* First insn is HA, second is LO. */
9007 insn = *stub++;
9008 insn |= ((relocation + 0x8000) >> 16) & 0xffff;
9009 bfd_put_32 (output_bfd, insn, contents + insn_offset);
9010 insn_offset += 4;
9011
9012 insn = *stub++;
9013 insn |= relocation & 0xffff;
9014 bfd_put_32 (output_bfd, insn, contents + insn_offset);
9015 insn_offset += 4;
9016 size -= 2;
9017
9018 while (size != 0)
9019 {
9020 insn = *stub++;
9021 --size;
9022 bfd_put_32 (output_bfd, insn, contents + insn_offset);
9023 insn_offset += 4;
9024 }
9025
9026 /* Rewrite the reloc and convert one of the trailing nop
9027 relocs to describe this relocation. */
9028 BFD_ASSERT (ELF32_R_TYPE (relend[-1].r_info) == R_PPC_NONE);
9029 /* The relocs are at the bottom 2 bytes */
9030 wrel->r_offset = rel->r_offset + d_offset;
9031 wrel->r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_HA);
9032 wrel->r_addend = rel->r_addend;
9033 memmove (wrel + 1, wrel, (relend - wrel - 1) * sizeof (*wrel));
9034 wrel++, rel++;
9035 wrel->r_offset += 4;
9036 wrel->r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_LO);
9037 }
9038 continue;
9039
9040 /* Indirect .sdata relocation. */
9041 case R_PPC_EMB_SDAI16:
9042 BFD_ASSERT (htab->sdata[0].section != NULL);
9043 if (!is_static_defined (htab->sdata[0].sym))
9044 {
9045 unresolved_reloc = TRUE;
9046 break;
9047 }
9048 relocation
9049 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[0],
9050 h, relocation, rel);
9051 addend = 0;
9052 break;
9053
9054 /* Indirect .sdata2 relocation. */
9055 case R_PPC_EMB_SDA2I16:
9056 BFD_ASSERT (htab->sdata[1].section != NULL);
9057 if (!is_static_defined (htab->sdata[1].sym))
9058 {
9059 unresolved_reloc = TRUE;
9060 break;
9061 }
9062 relocation
9063 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[1],
9064 h, relocation, rel);
9065 addend = 0;
9066 break;
9067
9068 /* Handle the TOC16 reloc. We want to use the offset within the .got
9069 section, not the actual VMA. This is appropriate when generating
9070 an embedded ELF object, for which the .got section acts like the
9071 AIX .toc section. */
9072 case R_PPC_TOC16: /* phony GOT16 relocations */
9073 if (sec == NULL || sec->output_section == NULL)
9074 {
9075 unresolved_reloc = TRUE;
9076 break;
9077 }
9078 BFD_ASSERT (strcmp (bfd_get_section_name (sec->owner, sec),
9079 ".got") == 0
9080 || strcmp (bfd_get_section_name (sec->owner, sec),
9081 ".cgot") == 0);
9082
9083 addend -= sec->output_section->vma + sec->output_offset + 0x8000;
9084 break;
9085
9086 case R_PPC_PLTREL24:
9087 if (h != NULL && ifunc == NULL)
9088 {
9089 struct plt_entry *ent;
9090
9091 ent = find_plt_ent (&h->plt.plist, got2,
9092 bfd_link_pic (info) ? addend : 0);
9093 if (ent == NULL
9094 || htab->plt == NULL)
9095 {
9096 /* We didn't make a PLT entry for this symbol. This
9097 happens when statically linking PIC code, or when
9098 using -Bsymbolic. */
9099 }
9100 else
9101 {
9102 /* Relocation is to the entry for this symbol in the
9103 procedure linkage table. */
9104 unresolved_reloc = FALSE;
9105 if (htab->plt_type == PLT_NEW)
9106 relocation = (htab->glink->output_section->vma
9107 + htab->glink->output_offset
9108 + ent->glink_offset);
9109 else
9110 relocation = (htab->plt->output_section->vma
9111 + htab->plt->output_offset
9112 + ent->plt.offset);
9113 }
9114 }
9115
9116 /* R_PPC_PLTREL24 is rather special. If non-zero, the
9117 addend specifies the GOT pointer offset within .got2.
9118 Don't apply it to the relocation field. */
9119 addend = 0;
9120 break;
9121
9122 /* Relocate against _SDA_BASE_. */
9123 case R_PPC_SDAREL16:
9124 {
9125 const char *name;
9126 struct elf_link_hash_entry *sda = htab->sdata[0].sym;
9127
9128 if (sec == NULL
9129 || sec->output_section == NULL
9130 || !is_static_defined (sda))
9131 {
9132 unresolved_reloc = TRUE;
9133 break;
9134 }
9135 addend -= SYM_VAL (sda);
9136
9137 name = bfd_get_section_name (output_bfd, sec->output_section);
9138 if (!(strcmp (name, ".sdata") == 0
9139 || strcmp (name, ".sbss") == 0))
9140 {
9141 info->callbacks->einfo
9142 (_("%P: %B: the target (%s) of a %s relocation is "
9143 "in the wrong output section (%s)\n"),
9144 input_bfd,
9145 sym_name,
9146 howto->name,
9147 name);
9148 }
9149 }
9150 break;
9151
9152 /* Relocate against _SDA2_BASE_. */
9153 case R_PPC_EMB_SDA2REL:
9154 {
9155 const char *name;
9156 struct elf_link_hash_entry *sda = htab->sdata[1].sym;
9157
9158 if (sec == NULL
9159 || sec->output_section == NULL
9160 || !is_static_defined (sda))
9161 {
9162 unresolved_reloc = TRUE;
9163 break;
9164 }
9165 addend -= SYM_VAL (sda);
9166
9167 name = bfd_get_section_name (output_bfd, sec->output_section);
9168 if (!(strcmp (name, ".sdata2") == 0
9169 || strcmp (name, ".sbss2") == 0))
9170 {
9171 info->callbacks->einfo
9172 (_("%P: %B: the target (%s) of a %s relocation is "
9173 "in the wrong output section (%s)\n"),
9174 input_bfd,
9175 sym_name,
9176 howto->name,
9177 name);
9178 }
9179 }
9180 break;
9181
9182 case R_PPC_VLE_LO16A:
9183 relocation = relocation + addend;
9184 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9185 relocation, split16a_type);
9186 goto copy_reloc;
9187
9188 case R_PPC_VLE_LO16D:
9189 relocation = relocation + addend;
9190 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9191 relocation, split16d_type);
9192 goto copy_reloc;
9193
9194 case R_PPC_VLE_HI16A:
9195 relocation = (relocation + addend) >> 16;
9196 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9197 relocation, split16a_type);
9198 goto copy_reloc;
9199
9200 case R_PPC_VLE_HI16D:
9201 relocation = (relocation + addend) >> 16;
9202 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9203 relocation, split16d_type);
9204 goto copy_reloc;
9205
9206 case R_PPC_VLE_HA16A:
9207 relocation = (relocation + addend + 0x8000) >> 16;
9208 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9209 relocation, split16a_type);
9210 goto copy_reloc;
9211
9212 case R_PPC_VLE_HA16D:
9213 relocation = (relocation + addend + 0x8000) >> 16;
9214 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9215 relocation, split16d_type);
9216 goto copy_reloc;
9217
9218 /* Relocate against either _SDA_BASE_, _SDA2_BASE_, or 0. */
9219 case R_PPC_EMB_SDA21:
9220 case R_PPC_VLE_SDA21:
9221 case R_PPC_EMB_RELSDA:
9222 case R_PPC_VLE_SDA21_LO:
9223 {
9224 const char *name;
9225 int reg;
9226 unsigned int insn;
9227 struct elf_link_hash_entry *sda = NULL;
9228
9229 if (sec == NULL || sec->output_section == NULL)
9230 {
9231 unresolved_reloc = TRUE;
9232 break;
9233 }
9234
9235 name = bfd_get_section_name (output_bfd, sec->output_section);
9236 if (strcmp (name, ".sdata") == 0
9237 || strcmp (name, ".sbss") == 0)
9238 {
9239 reg = 13;
9240 sda = htab->sdata[0].sym;
9241 }
9242 else if (strcmp (name, ".sdata2") == 0
9243 || strcmp (name, ".sbss2") == 0)
9244 {
9245 reg = 2;
9246 sda = htab->sdata[1].sym;
9247 }
9248 else if (strcmp (name, ".PPC.EMB.sdata0") == 0
9249 || strcmp (name, ".PPC.EMB.sbss0") == 0)
9250 {
9251 reg = 0;
9252 }
9253 else
9254 {
9255 info->callbacks->einfo
9256 (_("%P: %B: the target (%s) of a %s relocation is "
9257 "in the wrong output section (%s)\n"),
9258 input_bfd,
9259 sym_name,
9260 howto->name,
9261 name);
9262
9263 bfd_set_error (bfd_error_bad_value);
9264 ret = FALSE;
9265 goto copy_reloc;
9266 }
9267
9268 if (sda != NULL)
9269 {
9270 if (!is_static_defined (sda))
9271 {
9272 unresolved_reloc = TRUE;
9273 break;
9274 }
9275 addend -= SYM_VAL (sda);
9276 }
9277
9278 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
9279 if (reg == 0
9280 && (r_type == R_PPC_VLE_SDA21
9281 || r_type == R_PPC_VLE_SDA21_LO))
9282 {
9283 relocation = relocation + addend;
9284 addend = 0;
9285
9286 /* Force e_li insn, keeping RT from original insn. */
9287 insn &= 0x1f << 21;
9288 insn |= 28u << 26;
9289
9290 /* We have an li20 field, bits 17..20, 11..15, 21..31. */
9291 /* Top 4 bits of value to 17..20. */
9292 insn |= (relocation & 0xf0000) >> 5;
9293 /* Next 5 bits of the value to 11..15. */
9294 insn |= (relocation & 0xf800) << 5;
9295 /* And the final 11 bits of the value to bits 21 to 31. */
9296 insn |= relocation & 0x7ff;
9297
9298 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
9299
9300 if (r_type == R_PPC_VLE_SDA21
9301 && ((relocation + 0x80000) & 0xffffffff) > 0x100000)
9302 goto overflow;
9303 goto copy_reloc;
9304 }
9305 else if (r_type == R_PPC_EMB_SDA21
9306 || r_type == R_PPC_VLE_SDA21
9307 || r_type == R_PPC_VLE_SDA21_LO)
9308 {
9309 /* Fill in register field. */
9310 insn = (insn & ~RA_REGISTER_MASK) | (reg << RA_REGISTER_SHIFT);
9311 }
9312 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
9313 }
9314 break;
9315
9316 case R_PPC_VLE_SDAREL_LO16A:
9317 case R_PPC_VLE_SDAREL_LO16D:
9318 case R_PPC_VLE_SDAREL_HI16A:
9319 case R_PPC_VLE_SDAREL_HI16D:
9320 case R_PPC_VLE_SDAREL_HA16A:
9321 case R_PPC_VLE_SDAREL_HA16D:
9322 {
9323 bfd_vma value;
9324 const char *name;
9325 //int reg;
9326 struct elf_link_hash_entry *sda = NULL;
9327
9328 if (sec == NULL || sec->output_section == NULL)
9329 {
9330 unresolved_reloc = TRUE;
9331 break;
9332 }
9333
9334 name = bfd_get_section_name (output_bfd, sec->output_section);
9335 if (strcmp (name, ".sdata") == 0
9336 || strcmp (name, ".sbss") == 0)
9337 {
9338 //reg = 13;
9339 sda = htab->sdata[0].sym;
9340 }
9341 else if (strcmp (name, ".sdata2") == 0
9342 || strcmp (name, ".sbss2") == 0)
9343 {
9344 //reg = 2;
9345 sda = htab->sdata[1].sym;
9346 }
9347 else
9348 {
9349 (*_bfd_error_handler)
9350 (_("%B: the target (%s) of a %s relocation is "
9351 "in the wrong output section (%s)"),
9352 input_bfd,
9353 sym_name,
9354 howto->name,
9355 name);
9356
9357 bfd_set_error (bfd_error_bad_value);
9358 ret = FALSE;
9359 goto copy_reloc;
9360 }
9361
9362 if (sda != NULL)
9363 {
9364 if (!is_static_defined (sda))
9365 {
9366 unresolved_reloc = TRUE;
9367 break;
9368 }
9369 }
9370
9371 value = (sda->root.u.def.section->output_section->vma
9372 + sda->root.u.def.section->output_offset
9373 + addend);
9374
9375 if (r_type == R_PPC_VLE_SDAREL_LO16A)
9376 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9377 value, split16a_type);
9378 else if (r_type == R_PPC_VLE_SDAREL_LO16D)
9379 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9380 value, split16d_type);
9381 else if (r_type == R_PPC_VLE_SDAREL_HI16A)
9382 {
9383 value = value >> 16;
9384 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9385 value, split16a_type);
9386 }
9387 else if (r_type == R_PPC_VLE_SDAREL_HI16D)
9388 {
9389 value = value >> 16;
9390 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9391 value, split16d_type);
9392 }
9393 else if (r_type == R_PPC_VLE_SDAREL_HA16A)
9394 {
9395 value = (value + 0x8000) >> 16;
9396 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9397 value, split16a_type);
9398 }
9399 else if (r_type == R_PPC_VLE_SDAREL_HA16D)
9400 {
9401 value = (value + 0x8000) >> 16;
9402 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9403 value, split16d_type);
9404 }
9405 }
9406 goto copy_reloc;
9407
9408 /* Relocate against the beginning of the section. */
9409 case R_PPC_SECTOFF:
9410 case R_PPC_SECTOFF_LO:
9411 case R_PPC_SECTOFF_HI:
9412 case R_PPC_SECTOFF_HA:
9413 if (sec == NULL || sec->output_section == NULL)
9414 {
9415 unresolved_reloc = TRUE;
9416 break;
9417 }
9418 addend -= sec->output_section->vma;
9419 break;
9420
9421 /* Negative relocations. */
9422 case R_PPC_EMB_NADDR32:
9423 case R_PPC_EMB_NADDR16:
9424 case R_PPC_EMB_NADDR16_LO:
9425 case R_PPC_EMB_NADDR16_HI:
9426 case R_PPC_EMB_NADDR16_HA:
9427 addend -= 2 * relocation;
9428 break;
9429
9430 case R_PPC_COPY:
9431 case R_PPC_GLOB_DAT:
9432 case R_PPC_JMP_SLOT:
9433 case R_PPC_RELATIVE:
9434 case R_PPC_IRELATIVE:
9435 case R_PPC_PLT32:
9436 case R_PPC_PLTREL32:
9437 case R_PPC_PLT16_LO:
9438 case R_PPC_PLT16_HI:
9439 case R_PPC_PLT16_HA:
9440 case R_PPC_ADDR30:
9441 case R_PPC_EMB_RELSEC16:
9442 case R_PPC_EMB_RELST_LO:
9443 case R_PPC_EMB_RELST_HI:
9444 case R_PPC_EMB_RELST_HA:
9445 case R_PPC_EMB_BIT_FLD:
9446 info->callbacks->einfo
9447 (_("%P: %B: relocation %s is not yet supported for symbol %s\n"),
9448 input_bfd,
9449 howto->name,
9450 sym_name);
9451
9452 bfd_set_error (bfd_error_invalid_operation);
9453 ret = FALSE;
9454 goto copy_reloc;
9455 }
9456
9457 /* Do any further special processing. */
9458 switch (r_type)
9459 {
9460 default:
9461 break;
9462
9463 case R_PPC_ADDR16_HA:
9464 case R_PPC_REL16_HA:
9465 case R_PPC_REL16DX_HA:
9466 case R_PPC_SECTOFF_HA:
9467 case R_PPC_TPREL16_HA:
9468 case R_PPC_DTPREL16_HA:
9469 case R_PPC_EMB_NADDR16_HA:
9470 case R_PPC_EMB_RELST_HA:
9471 /* It's just possible that this symbol is a weak symbol
9472 that's not actually defined anywhere. In that case,
9473 'sec' would be NULL, and we should leave the symbol
9474 alone (it will be set to zero elsewhere in the link). */
9475 if (sec == NULL)
9476 break;
9477 /* Fall thru */
9478
9479 case R_PPC_PLT16_HA:
9480 case R_PPC_GOT16_HA:
9481 case R_PPC_GOT_TLSGD16_HA:
9482 case R_PPC_GOT_TLSLD16_HA:
9483 case R_PPC_GOT_TPREL16_HA:
9484 case R_PPC_GOT_DTPREL16_HA:
9485 /* Add 0x10000 if sign bit in 0:15 is set.
9486 Bits 0:15 are not used. */
9487 addend += 0x8000;
9488 break;
9489
9490 case R_PPC_ADDR16:
9491 case R_PPC_ADDR16_LO:
9492 case R_PPC_GOT16:
9493 case R_PPC_GOT16_LO:
9494 case R_PPC_SDAREL16:
9495 case R_PPC_SECTOFF:
9496 case R_PPC_SECTOFF_LO:
9497 case R_PPC_DTPREL16:
9498 case R_PPC_DTPREL16_LO:
9499 case R_PPC_TPREL16:
9500 case R_PPC_TPREL16_LO:
9501 case R_PPC_GOT_TLSGD16:
9502 case R_PPC_GOT_TLSGD16_LO:
9503 case R_PPC_GOT_TLSLD16:
9504 case R_PPC_GOT_TLSLD16_LO:
9505 case R_PPC_GOT_DTPREL16:
9506 case R_PPC_GOT_DTPREL16_LO:
9507 case R_PPC_GOT_TPREL16:
9508 case R_PPC_GOT_TPREL16_LO:
9509 {
9510 /* The 32-bit ABI lacks proper relocations to deal with
9511 certain 64-bit instructions. Prevent damage to bits
9512 that make up part of the insn opcode. */
9513 unsigned int insn, mask, lobit;
9514
9515 insn = bfd_get_32 (output_bfd,
9516 contents + rel->r_offset - d_offset);
9517 mask = 0;
9518 if (is_insn_ds_form (insn))
9519 mask = 3;
9520 else if (is_insn_dq_form (insn))
9521 mask = 15;
9522 else
9523 break;
9524 relocation += addend;
9525 addend = insn & mask;
9526 lobit = mask & relocation;
9527 if (lobit != 0)
9528 {
9529 relocation ^= lobit;
9530 info->callbacks->einfo
9531 (_("%P: %H: error: %s against `%s' not a multiple of %u\n"),
9532 input_bfd, input_section, rel->r_offset,
9533 howto->name, sym_name, mask + 1);
9534 bfd_set_error (bfd_error_bad_value);
9535 ret = FALSE;
9536 }
9537 }
9538 break;
9539 }
9540
9541 #ifdef DEBUG
9542 fprintf (stderr, "\ttype = %s (%d), name = %s, symbol index = %ld, "
9543 "offset = %ld, addend = %ld\n",
9544 howto->name,
9545 (int) r_type,
9546 sym_name,
9547 r_symndx,
9548 (long) rel->r_offset,
9549 (long) addend);
9550 #endif
9551
9552 if (unresolved_reloc
9553 && !((input_section->flags & SEC_DEBUGGING) != 0
9554 && h->def_dynamic)
9555 && _bfd_elf_section_offset (output_bfd, info, input_section,
9556 rel->r_offset) != (bfd_vma) -1)
9557 {
9558 info->callbacks->einfo
9559 (_("%P: %H: unresolvable %s relocation against symbol `%s'\n"),
9560 input_bfd, input_section, rel->r_offset,
9561 howto->name,
9562 sym_name);
9563 ret = FALSE;
9564 }
9565
9566 /* 16-bit fields in insns mostly have signed values, but a
9567 few insns have 16-bit unsigned values. Really, we should
9568 have different reloc types. */
9569 if (howto->complain_on_overflow != complain_overflow_dont
9570 && howto->dst_mask == 0xffff
9571 && (input_section->flags & SEC_CODE) != 0)
9572 {
9573 enum complain_overflow complain = complain_overflow_signed;
9574
9575 if ((elf_section_flags (input_section) & SHF_PPC_VLE) == 0)
9576 {
9577 unsigned int insn;
9578
9579 insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
9580 if ((insn & (0x3f << 26)) == 10u << 26 /* cmpli */)
9581 complain = complain_overflow_bitfield;
9582 else if ((insn & (0x3f << 26)) == 28u << 26 /* andi */
9583 || (insn & (0x3f << 26)) == 24u << 26 /* ori */
9584 || (insn & (0x3f << 26)) == 26u << 26 /* xori */)
9585 complain = complain_overflow_unsigned;
9586 }
9587 if (howto->complain_on_overflow != complain)
9588 {
9589 alt_howto = *howto;
9590 alt_howto.complain_on_overflow = complain;
9591 howto = &alt_howto;
9592 }
9593 }
9594
9595 if (r_type == R_PPC_REL16DX_HA)
9596 {
9597 /* Split field reloc isn't handled by _bfd_final_link_relocate. */
9598 if (rel->r_offset + 4 > input_section->size)
9599 r = bfd_reloc_outofrange;
9600 else
9601 {
9602 unsigned int insn;
9603
9604 relocation += addend;
9605 relocation -= (rel->r_offset
9606 + input_section->output_offset
9607 + input_section->output_section->vma);
9608 relocation >>= 16;
9609 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
9610 insn &= ~0x1fffc1;
9611 insn |= (relocation & 0xffc1) | ((relocation & 0x3e) << 15);
9612 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
9613 r = bfd_reloc_ok;
9614 }
9615 }
9616 else
9617 r = _bfd_final_link_relocate (howto, input_bfd, input_section, contents,
9618 rel->r_offset, relocation, addend);
9619
9620 if (r != bfd_reloc_ok)
9621 {
9622 if (r == bfd_reloc_overflow)
9623 {
9624 overflow:
9625 /* On code like "if (foo) foo();" don't report overflow
9626 on a branch to zero when foo is undefined. */
9627 if (!warned
9628 && !(h != NULL
9629 && (h->root.type == bfd_link_hash_undefweak
9630 || h->root.type == bfd_link_hash_undefined)
9631 && is_branch_reloc (r_type)))
9632 info->callbacks->reloc_overflow
9633 (info, (h ? &h->root : NULL), sym_name, howto->name,
9634 rel->r_addend, input_bfd, input_section, rel->r_offset);
9635 }
9636 else
9637 {
9638 info->callbacks->einfo
9639 (_("%P: %H: %s reloc against `%s': error %d\n"),
9640 input_bfd, input_section, rel->r_offset,
9641 howto->name, sym_name, (int) r);
9642 ret = FALSE;
9643 }
9644 }
9645 copy_reloc:
9646 if (wrel != rel)
9647 *wrel = *rel;
9648 }
9649
9650 if (wrel != rel)
9651 {
9652 Elf_Internal_Shdr *rel_hdr;
9653 size_t deleted = rel - wrel;
9654
9655 rel_hdr = _bfd_elf_single_rel_hdr (input_section->output_section);
9656 rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted;
9657 if (rel_hdr->sh_size == 0)
9658 {
9659 /* It is too late to remove an empty reloc section. Leave
9660 one NONE reloc.
9661 ??? What is wrong with an empty section??? */
9662 rel_hdr->sh_size = rel_hdr->sh_entsize;
9663 deleted -= 1;
9664 wrel++;
9665 }
9666 relend = wrel;
9667 rel_hdr = _bfd_elf_single_rel_hdr (input_section);
9668 rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted;
9669 input_section->reloc_count -= deleted;
9670 }
9671
9672 #ifdef DEBUG
9673 fprintf (stderr, "\n");
9674 #endif
9675
9676 if (input_section->sec_info_type == SEC_INFO_TYPE_TARGET
9677 && input_section->size != input_section->rawsize
9678 && (strcmp (input_section->output_section->name, ".init") == 0
9679 || strcmp (input_section->output_section->name, ".fini") == 0))
9680 {
9681 /* Branch around the trampolines. */
9682 unsigned int insn = B + input_section->size - input_section->rawsize;
9683 bfd_put_32 (input_bfd, insn, contents + input_section->rawsize);
9684 }
9685
9686 if (htab->params->ppc476_workaround
9687 && input_section->sec_info_type == SEC_INFO_TYPE_TARGET
9688 && (!bfd_link_relocatable (info)
9689 || (input_section->output_section->alignment_power
9690 >= htab->params->pagesize_p2)))
9691 {
9692 bfd_vma start_addr, end_addr, addr;
9693 bfd_vma pagesize = (bfd_vma) 1 << htab->params->pagesize_p2;
9694
9695 if (relax_info->workaround_size != 0)
9696 {
9697 bfd_byte *p;
9698 unsigned int n;
9699 bfd_byte fill[4];
9700
9701 bfd_put_32 (input_bfd, BA, fill);
9702 p = contents + input_section->size - relax_info->workaround_size;
9703 n = relax_info->workaround_size >> 2;
9704 while (n--)
9705 {
9706 memcpy (p, fill, 4);
9707 p += 4;
9708 }
9709 }
9710
9711 /* The idea is: Replace the last instruction on a page with a
9712 branch to a patch area. Put the insn there followed by a
9713 branch back to the next page. Complicated a little by
9714 needing to handle moved conditional branches, and by not
9715 wanting to touch data-in-text. */
9716
9717 start_addr = (input_section->output_section->vma
9718 + input_section->output_offset);
9719 end_addr = (start_addr + input_section->size
9720 - relax_info->workaround_size);
9721 for (addr = ((start_addr & -pagesize) + pagesize - 4);
9722 addr < end_addr;
9723 addr += pagesize)
9724 {
9725 bfd_vma offset = addr - start_addr;
9726 Elf_Internal_Rela *lo, *hi;
9727 bfd_boolean is_data;
9728 bfd_vma patch_off, patch_addr;
9729 unsigned int insn;
9730
9731 /* Do we have a data reloc at this offset? If so, leave
9732 the word alone. */
9733 is_data = FALSE;
9734 lo = relocs;
9735 hi = relend;
9736 rel = NULL;
9737 while (lo < hi)
9738 {
9739 rel = lo + (hi - lo) / 2;
9740 if (rel->r_offset < offset)
9741 lo = rel + 1;
9742 else if (rel->r_offset > offset + 3)
9743 hi = rel;
9744 else
9745 {
9746 switch (ELF32_R_TYPE (rel->r_info))
9747 {
9748 case R_PPC_ADDR32:
9749 case R_PPC_UADDR32:
9750 case R_PPC_REL32:
9751 case R_PPC_ADDR30:
9752 is_data = TRUE;
9753 break;
9754 default:
9755 break;
9756 }
9757 break;
9758 }
9759 }
9760 if (is_data)
9761 continue;
9762
9763 /* Some instructions can be left alone too. Unconditional
9764 branches, except for bcctr with BO=0x14 (bctr, bctrl),
9765 avoid the icache failure.
9766
9767 The problem occurs due to prefetch across a page boundary
9768 where stale instructions can be fetched from the next
9769 page, and the mechanism for flushing these bad
9770 instructions fails under certain circumstances. The
9771 unconditional branches:
9772 1) Branch: b, bl, ba, bla,
9773 2) Branch Conditional: bc, bca, bcl, bcla,
9774 3) Branch Conditional to Link Register: bclr, bclrl,
9775 where (2) and (3) have BO=0x14 making them unconditional,
9776 prevent the bad prefetch because the prefetch itself is
9777 affected by these instructions. This happens even if the
9778 instruction is not executed.
9779
9780 A bctr example:
9781 .
9782 . lis 9,new_page@ha
9783 . addi 9,9,new_page@l
9784 . mtctr 9
9785 . bctr
9786 . nop
9787 . nop
9788 . new_page:
9789 .
9790 The bctr is not predicted taken due to ctr not being
9791 ready, so prefetch continues on past the bctr into the
9792 new page which might have stale instructions. If they
9793 fail to be flushed, then they will be executed after the
9794 bctr executes. Either of the following modifications
9795 prevent the bad prefetch from happening in the first
9796 place:
9797 .
9798 . lis 9,new_page@ha lis 9,new_page@ha
9799 . addi 9,9,new_page@l addi 9,9,new_page@l
9800 . mtctr 9 mtctr 9
9801 . bctr bctr
9802 . nop b somewhere_else
9803 . b somewhere_else nop
9804 . new_page: new_page:
9805 . */
9806 insn = bfd_get_32 (input_bfd, contents + offset);
9807 if ((insn & (0x3f << 26)) == (18u << 26) /* b,bl,ba,bla */
9808 || ((insn & (0x3f << 26)) == (16u << 26) /* bc,bcl,bca,bcla*/
9809 && (insn & (0x14 << 21)) == (0x14 << 21)) /* with BO=0x14 */
9810 || ((insn & (0x3f << 26)) == (19u << 26)
9811 && (insn & (0x3ff << 1)) == (16u << 1) /* bclr,bclrl */
9812 && (insn & (0x14 << 21)) == (0x14 << 21)))/* with BO=0x14 */
9813 continue;
9814
9815 patch_addr = (start_addr + input_section->size
9816 - relax_info->workaround_size);
9817 patch_addr = (patch_addr + 15) & -16;
9818 patch_off = patch_addr - start_addr;
9819 bfd_put_32 (input_bfd, B + patch_off - offset, contents + offset);
9820
9821 if (rel != NULL
9822 && rel->r_offset >= offset
9823 && rel->r_offset < offset + 4)
9824 {
9825 asection *sreloc;
9826
9827 /* If the insn we are patching had a reloc, adjust the
9828 reloc r_offset so that the reloc applies to the moved
9829 location. This matters for -r and --emit-relocs. */
9830 if (rel + 1 != relend)
9831 {
9832 Elf_Internal_Rela tmp = *rel;
9833
9834 /* Keep the relocs sorted by r_offset. */
9835 memmove (rel, rel + 1, (relend - (rel + 1)) * sizeof (*rel));
9836 relend[-1] = tmp;
9837 }
9838 relend[-1].r_offset += patch_off - offset;
9839
9840 /* Adjust REL16 addends too. */
9841 switch (ELF32_R_TYPE (relend[-1].r_info))
9842 {
9843 case R_PPC_REL16:
9844 case R_PPC_REL16_LO:
9845 case R_PPC_REL16_HI:
9846 case R_PPC_REL16_HA:
9847 relend[-1].r_addend += patch_off - offset;
9848 break;
9849 default:
9850 break;
9851 }
9852
9853 /* If we are building a PIE or shared library with
9854 non-PIC objects, perhaps we had a dynamic reloc too?
9855 If so, the dynamic reloc must move with the insn. */
9856 sreloc = elf_section_data (input_section)->sreloc;
9857 if (sreloc != NULL)
9858 {
9859 Elf32_External_Rela *slo, *shi, *srelend;
9860 bfd_vma soffset;
9861
9862 slo = (Elf32_External_Rela *) sreloc->contents;
9863 shi = srelend = slo + sreloc->reloc_count;
9864 soffset = (offset + input_section->output_section->vma
9865 + input_section->output_offset);
9866 while (slo < shi)
9867 {
9868 Elf32_External_Rela *srel = slo + (shi - slo) / 2;
9869 bfd_elf32_swap_reloca_in (output_bfd, (bfd_byte *) srel,
9870 &outrel);
9871 if (outrel.r_offset < soffset)
9872 slo = srel + 1;
9873 else if (outrel.r_offset > soffset + 3)
9874 shi = srel;
9875 else
9876 {
9877 if (srel + 1 != srelend)
9878 {
9879 memmove (srel, srel + 1,
9880 (srelend - (srel + 1)) * sizeof (*srel));
9881 srel = srelend - 1;
9882 }
9883 outrel.r_offset += patch_off - offset;
9884 bfd_elf32_swap_reloca_out (output_bfd, &outrel,
9885 (bfd_byte *) srel);
9886 break;
9887 }
9888 }
9889 }
9890 }
9891 else
9892 rel = NULL;
9893
9894 if ((insn & (0x3f << 26)) == (16u << 26) /* bc */
9895 && (insn & 2) == 0 /* relative */)
9896 {
9897 bfd_vma delta = ((insn & 0xfffc) ^ 0x8000) - 0x8000;
9898
9899 delta += offset - patch_off;
9900 if (bfd_link_relocatable (info) && rel != NULL)
9901 delta = 0;
9902 if (!bfd_link_relocatable (info) && rel != NULL)
9903 {
9904 enum elf_ppc_reloc_type r_type;
9905
9906 r_type = ELF32_R_TYPE (relend[-1].r_info);
9907 if (r_type == R_PPC_REL14_BRTAKEN)
9908 insn |= BRANCH_PREDICT_BIT;
9909 else if (r_type == R_PPC_REL14_BRNTAKEN)
9910 insn &= ~BRANCH_PREDICT_BIT;
9911 else
9912 BFD_ASSERT (r_type == R_PPC_REL14);
9913
9914 if ((r_type == R_PPC_REL14_BRTAKEN
9915 || r_type == R_PPC_REL14_BRNTAKEN)
9916 && delta + 0x8000 < 0x10000
9917 && (bfd_signed_vma) delta < 0)
9918 insn ^= BRANCH_PREDICT_BIT;
9919 }
9920 if (delta + 0x8000 < 0x10000)
9921 {
9922 bfd_put_32 (input_bfd,
9923 (insn & ~0xfffc) | (delta & 0xfffc),
9924 contents + patch_off);
9925 patch_off += 4;
9926 bfd_put_32 (input_bfd,
9927 B | ((offset + 4 - patch_off) & 0x3fffffc),
9928 contents + patch_off);
9929 patch_off += 4;
9930 }
9931 else
9932 {
9933 if (rel != NULL)
9934 {
9935 unsigned int r_sym = ELF32_R_SYM (relend[-1].r_info);
9936
9937 relend[-1].r_offset += 8;
9938 relend[-1].r_info = ELF32_R_INFO (r_sym, R_PPC_REL24);
9939 }
9940 bfd_put_32 (input_bfd,
9941 (insn & ~0xfffc) | 8,
9942 contents + patch_off);
9943 patch_off += 4;
9944 bfd_put_32 (input_bfd,
9945 B | ((offset + 4 - patch_off) & 0x3fffffc),
9946 contents + patch_off);
9947 patch_off += 4;
9948 bfd_put_32 (input_bfd,
9949 B | ((delta - 8) & 0x3fffffc),
9950 contents + patch_off);
9951 patch_off += 4;
9952 }
9953 }
9954 else
9955 {
9956 bfd_put_32 (input_bfd, insn, contents + patch_off);
9957 patch_off += 4;
9958 bfd_put_32 (input_bfd,
9959 B | ((offset + 4 - patch_off) & 0x3fffffc),
9960 contents + patch_off);
9961 patch_off += 4;
9962 }
9963 BFD_ASSERT (patch_off <= input_section->size);
9964 relax_info->workaround_size = input_section->size - patch_off;
9965 }
9966 }
9967
9968 return ret;
9969 }
9970 \f
9971 /* Finish up dynamic symbol handling. We set the contents of various
9972 dynamic sections here. */
9973
9974 static bfd_boolean
9975 ppc_elf_finish_dynamic_symbol (bfd *output_bfd,
9976 struct bfd_link_info *info,
9977 struct elf_link_hash_entry *h,
9978 Elf_Internal_Sym *sym)
9979 {
9980 struct ppc_elf_link_hash_table *htab;
9981 struct plt_entry *ent;
9982 bfd_boolean doneone;
9983
9984 #ifdef DEBUG
9985 fprintf (stderr, "ppc_elf_finish_dynamic_symbol called for %s",
9986 h->root.root.string);
9987 #endif
9988
9989 htab = ppc_elf_hash_table (info);
9990 BFD_ASSERT (htab->elf.dynobj != NULL);
9991
9992 doneone = FALSE;
9993 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
9994 if (ent->plt.offset != (bfd_vma) -1)
9995 {
9996 if (!doneone)
9997 {
9998 Elf_Internal_Rela rela;
9999 bfd_byte *loc;
10000 bfd_vma reloc_index;
10001
10002 if (htab->plt_type == PLT_NEW
10003 || !htab->elf.dynamic_sections_created
10004 || h->dynindx == -1)
10005 reloc_index = ent->plt.offset / 4;
10006 else
10007 {
10008 reloc_index = ((ent->plt.offset - htab->plt_initial_entry_size)
10009 / htab->plt_slot_size);
10010 if (reloc_index > PLT_NUM_SINGLE_ENTRIES
10011 && htab->plt_type == PLT_OLD)
10012 reloc_index -= (reloc_index - PLT_NUM_SINGLE_ENTRIES) / 2;
10013 }
10014
10015 /* This symbol has an entry in the procedure linkage table.
10016 Set it up. */
10017 if (htab->plt_type == PLT_VXWORKS
10018 && htab->elf.dynamic_sections_created
10019 && h->dynindx != -1)
10020 {
10021 bfd_vma got_offset;
10022 const bfd_vma *plt_entry;
10023
10024 /* The first three entries in .got.plt are reserved. */
10025 got_offset = (reloc_index + 3) * 4;
10026
10027 /* Use the right PLT. */
10028 plt_entry = bfd_link_pic (info) ? ppc_elf_vxworks_pic_plt_entry
10029 : ppc_elf_vxworks_plt_entry;
10030
10031 /* Fill in the .plt on VxWorks. */
10032 if (bfd_link_pic (info))
10033 {
10034 bfd_put_32 (output_bfd,
10035 plt_entry[0] | PPC_HA (got_offset),
10036 htab->plt->contents + ent->plt.offset + 0);
10037 bfd_put_32 (output_bfd,
10038 plt_entry[1] | PPC_LO (got_offset),
10039 htab->plt->contents + ent->plt.offset + 4);
10040 }
10041 else
10042 {
10043 bfd_vma got_loc = got_offset + SYM_VAL (htab->elf.hgot);
10044
10045 bfd_put_32 (output_bfd,
10046 plt_entry[0] | PPC_HA (got_loc),
10047 htab->plt->contents + ent->plt.offset + 0);
10048 bfd_put_32 (output_bfd,
10049 plt_entry[1] | PPC_LO (got_loc),
10050 htab->plt->contents + ent->plt.offset + 4);
10051 }
10052
10053 bfd_put_32 (output_bfd, plt_entry[2],
10054 htab->plt->contents + ent->plt.offset + 8);
10055 bfd_put_32 (output_bfd, plt_entry[3],
10056 htab->plt->contents + ent->plt.offset + 12);
10057
10058 /* This instruction is an immediate load. The value loaded is
10059 the byte offset of the R_PPC_JMP_SLOT relocation from the
10060 start of the .rela.plt section. The value is stored in the
10061 low-order 16 bits of the load instruction. */
10062 /* NOTE: It appears that this is now an index rather than a
10063 prescaled offset. */
10064 bfd_put_32 (output_bfd,
10065 plt_entry[4] | reloc_index,
10066 htab->plt->contents + ent->plt.offset + 16);
10067 /* This instruction is a PC-relative branch whose target is
10068 the start of the PLT section. The address of this branch
10069 instruction is 20 bytes beyond the start of this PLT entry.
10070 The address is encoded in bits 6-29, inclusive. The value
10071 stored is right-shifted by two bits, permitting a 26-bit
10072 offset. */
10073 bfd_put_32 (output_bfd,
10074 (plt_entry[5]
10075 | (-(ent->plt.offset + 20) & 0x03fffffc)),
10076 htab->plt->contents + ent->plt.offset + 20);
10077 bfd_put_32 (output_bfd, plt_entry[6],
10078 htab->plt->contents + ent->plt.offset + 24);
10079 bfd_put_32 (output_bfd, plt_entry[7],
10080 htab->plt->contents + ent->plt.offset + 28);
10081
10082 /* Fill in the GOT entry corresponding to this PLT slot with
10083 the address immediately after the "bctr" instruction
10084 in this PLT entry. */
10085 bfd_put_32 (output_bfd, (htab->plt->output_section->vma
10086 + htab->plt->output_offset
10087 + ent->plt.offset + 16),
10088 htab->sgotplt->contents + got_offset);
10089
10090 if (!bfd_link_pic (info))
10091 {
10092 /* Fill in a couple of entries in .rela.plt.unloaded. */
10093 loc = htab->srelplt2->contents
10094 + ((VXWORKS_PLTRESOLVE_RELOCS + reloc_index
10095 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS)
10096 * sizeof (Elf32_External_Rela));
10097
10098 /* Provide the @ha relocation for the first instruction. */
10099 rela.r_offset = (htab->plt->output_section->vma
10100 + htab->plt->output_offset
10101 + ent->plt.offset + 2);
10102 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
10103 R_PPC_ADDR16_HA);
10104 rela.r_addend = got_offset;
10105 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10106 loc += sizeof (Elf32_External_Rela);
10107
10108 /* Provide the @l relocation for the second instruction. */
10109 rela.r_offset = (htab->plt->output_section->vma
10110 + htab->plt->output_offset
10111 + ent->plt.offset + 6);
10112 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
10113 R_PPC_ADDR16_LO);
10114 rela.r_addend = got_offset;
10115 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10116 loc += sizeof (Elf32_External_Rela);
10117
10118 /* Provide a relocation for the GOT entry corresponding to this
10119 PLT slot. Point it at the middle of the .plt entry. */
10120 rela.r_offset = (htab->sgotplt->output_section->vma
10121 + htab->sgotplt->output_offset
10122 + got_offset);
10123 rela.r_info = ELF32_R_INFO (htab->elf.hplt->indx,
10124 R_PPC_ADDR32);
10125 rela.r_addend = ent->plt.offset + 16;
10126 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10127 }
10128
10129 /* VxWorks uses non-standard semantics for R_PPC_JMP_SLOT.
10130 In particular, the offset for the relocation is not the
10131 address of the PLT entry for this function, as specified
10132 by the ABI. Instead, the offset is set to the address of
10133 the GOT slot for this function. See EABI 4.4.4.1. */
10134 rela.r_offset = (htab->sgotplt->output_section->vma
10135 + htab->sgotplt->output_offset
10136 + got_offset);
10137
10138 }
10139 else
10140 {
10141 asection *splt = htab->plt;
10142 if (!htab->elf.dynamic_sections_created
10143 || h->dynindx == -1)
10144 splt = htab->iplt;
10145
10146 rela.r_offset = (splt->output_section->vma
10147 + splt->output_offset
10148 + ent->plt.offset);
10149 if (htab->plt_type == PLT_OLD
10150 || !htab->elf.dynamic_sections_created
10151 || h->dynindx == -1)
10152 {
10153 /* We don't need to fill in the .plt. The ppc dynamic
10154 linker will fill it in. */
10155 }
10156 else
10157 {
10158 bfd_vma val = (htab->glink_pltresolve + ent->plt.offset
10159 + htab->glink->output_section->vma
10160 + htab->glink->output_offset);
10161 bfd_put_32 (output_bfd, val,
10162 splt->contents + ent->plt.offset);
10163 }
10164 }
10165
10166 /* Fill in the entry in the .rela.plt section. */
10167 rela.r_addend = 0;
10168 if (!htab->elf.dynamic_sections_created
10169 || h->dynindx == -1)
10170 {
10171 BFD_ASSERT (h->type == STT_GNU_IFUNC
10172 && h->def_regular
10173 && (h->root.type == bfd_link_hash_defined
10174 || h->root.type == bfd_link_hash_defweak));
10175 rela.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
10176 rela.r_addend = SYM_VAL (h);
10177 }
10178 else
10179 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_JMP_SLOT);
10180
10181 if (!htab->elf.dynamic_sections_created
10182 || h->dynindx == -1)
10183 loc = (htab->reliplt->contents
10184 + (htab->reliplt->reloc_count++
10185 * sizeof (Elf32_External_Rela)));
10186 else
10187 loc = (htab->relplt->contents
10188 + reloc_index * sizeof (Elf32_External_Rela));
10189 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10190
10191 if (!h->def_regular)
10192 {
10193 /* Mark the symbol as undefined, rather than as
10194 defined in the .plt section. Leave the value if
10195 there were any relocations where pointer equality
10196 matters (this is a clue for the dynamic linker, to
10197 make function pointer comparisons work between an
10198 application and shared library), otherwise set it
10199 to zero. */
10200 sym->st_shndx = SHN_UNDEF;
10201 if (!h->pointer_equality_needed)
10202 sym->st_value = 0;
10203 else if (!h->ref_regular_nonweak)
10204 {
10205 /* This breaks function pointer comparisons, but
10206 that is better than breaking tests for a NULL
10207 function pointer. */
10208 sym->st_value = 0;
10209 }
10210 }
10211 else if (h->type == STT_GNU_IFUNC
10212 && !bfd_link_pic (info))
10213 {
10214 /* Set the value of ifunc symbols in a non-pie
10215 executable to the glink entry. This is to avoid
10216 text relocations. We can't do this for ifunc in
10217 allocate_dynrelocs, as we do for normal dynamic
10218 function symbols with plt entries, because we need
10219 to keep the original value around for the ifunc
10220 relocation. */
10221 sym->st_shndx = (_bfd_elf_section_from_bfd_section
10222 (output_bfd, htab->glink->output_section));
10223 sym->st_value = (ent->glink_offset
10224 + htab->glink->output_offset
10225 + htab->glink->output_section->vma);
10226 }
10227 doneone = TRUE;
10228 }
10229
10230 if (htab->plt_type == PLT_NEW
10231 || !htab->elf.dynamic_sections_created
10232 || h->dynindx == -1)
10233 {
10234 unsigned char *p;
10235 asection *splt = htab->plt;
10236 if (!htab->elf.dynamic_sections_created
10237 || h->dynindx == -1)
10238 splt = htab->iplt;
10239
10240 p = (unsigned char *) htab->glink->contents + ent->glink_offset;
10241
10242 if (h == htab->tls_get_addr && !htab->params->no_tls_get_addr_opt)
10243 {
10244 bfd_put_32 (output_bfd, LWZ_11_3, p);
10245 p += 4;
10246 bfd_put_32 (output_bfd, LWZ_12_3 + 4, p);
10247 p += 4;
10248 bfd_put_32 (output_bfd, MR_0_3, p);
10249 p += 4;
10250 bfd_put_32 (output_bfd, CMPWI_11_0, p);
10251 p += 4;
10252 bfd_put_32 (output_bfd, ADD_3_12_2, p);
10253 p += 4;
10254 bfd_put_32 (output_bfd, BEQLR, p);
10255 p += 4;
10256 bfd_put_32 (output_bfd, MR_3_0, p);
10257 p += 4;
10258 bfd_put_32 (output_bfd, NOP, p);
10259 p += 4;
10260 }
10261
10262 write_glink_stub (ent, splt, p, info);
10263
10264 if (!bfd_link_pic (info))
10265 /* We only need one non-PIC glink stub. */
10266 break;
10267 }
10268 else
10269 break;
10270 }
10271
10272 if (h->needs_copy)
10273 {
10274 asection *s;
10275 Elf_Internal_Rela rela;
10276 bfd_byte *loc;
10277
10278 /* This symbols needs a copy reloc. Set it up. */
10279
10280 #ifdef DEBUG
10281 fprintf (stderr, ", copy");
10282 #endif
10283
10284 BFD_ASSERT (h->dynindx != -1);
10285
10286 if (ppc_elf_hash_entry (h)->has_sda_refs)
10287 s = htab->relsbss;
10288 else
10289 s = htab->relbss;
10290 BFD_ASSERT (s != NULL);
10291
10292 rela.r_offset = SYM_VAL (h);
10293 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_COPY);
10294 rela.r_addend = 0;
10295 loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
10296 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10297 }
10298
10299 #ifdef DEBUG
10300 fprintf (stderr, "\n");
10301 #endif
10302
10303 return TRUE;
10304 }
10305 \f
10306 static enum elf_reloc_type_class
10307 ppc_elf_reloc_type_class (const struct bfd_link_info *info,
10308 const asection *rel_sec,
10309 const Elf_Internal_Rela *rela)
10310 {
10311 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
10312
10313 if (rel_sec == htab->reliplt)
10314 return reloc_class_ifunc;
10315
10316 switch (ELF32_R_TYPE (rela->r_info))
10317 {
10318 case R_PPC_RELATIVE:
10319 return reloc_class_relative;
10320 case R_PPC_JMP_SLOT:
10321 return reloc_class_plt;
10322 case R_PPC_COPY:
10323 return reloc_class_copy;
10324 default:
10325 return reloc_class_normal;
10326 }
10327 }
10328 \f
10329 /* Finish up the dynamic sections. */
10330
10331 static bfd_boolean
10332 ppc_elf_finish_dynamic_sections (bfd *output_bfd,
10333 struct bfd_link_info *info)
10334 {
10335 asection *sdyn;
10336 asection *splt;
10337 struct ppc_elf_link_hash_table *htab;
10338 bfd_vma got;
10339 bfd *dynobj;
10340 bfd_boolean ret = TRUE;
10341
10342 #ifdef DEBUG
10343 fprintf (stderr, "ppc_elf_finish_dynamic_sections called\n");
10344 #endif
10345
10346 htab = ppc_elf_hash_table (info);
10347 dynobj = elf_hash_table (info)->dynobj;
10348 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
10349 if (htab->is_vxworks)
10350 splt = bfd_get_linker_section (dynobj, ".plt");
10351 else
10352 splt = NULL;
10353
10354 got = 0;
10355 if (htab->elf.hgot != NULL)
10356 got = SYM_VAL (htab->elf.hgot);
10357
10358 if (htab->elf.dynamic_sections_created)
10359 {
10360 Elf32_External_Dyn *dyncon, *dynconend;
10361
10362 BFD_ASSERT (htab->plt != NULL && sdyn != NULL);
10363
10364 dyncon = (Elf32_External_Dyn *) sdyn->contents;
10365 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
10366 for (; dyncon < dynconend; dyncon++)
10367 {
10368 Elf_Internal_Dyn dyn;
10369 asection *s;
10370
10371 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
10372
10373 switch (dyn.d_tag)
10374 {
10375 case DT_PLTGOT:
10376 if (htab->is_vxworks)
10377 s = htab->sgotplt;
10378 else
10379 s = htab->plt;
10380 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
10381 break;
10382
10383 case DT_PLTRELSZ:
10384 dyn.d_un.d_val = htab->relplt->size;
10385 break;
10386
10387 case DT_JMPREL:
10388 s = htab->relplt;
10389 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
10390 break;
10391
10392 case DT_PPC_GOT:
10393 dyn.d_un.d_ptr = got;
10394 break;
10395
10396 case DT_RELASZ:
10397 if (htab->is_vxworks)
10398 {
10399 if (htab->relplt)
10400 dyn.d_un.d_ptr -= htab->relplt->size;
10401 break;
10402 }
10403 continue;
10404
10405 default:
10406 if (htab->is_vxworks
10407 && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn))
10408 break;
10409 continue;
10410 }
10411
10412 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
10413 }
10414 }
10415
10416 if (htab->got != NULL)
10417 {
10418 if (htab->elf.hgot->root.u.def.section == htab->got
10419 || htab->elf.hgot->root.u.def.section == htab->sgotplt)
10420 {
10421 unsigned char *p = htab->elf.hgot->root.u.def.section->contents;
10422
10423 p += htab->elf.hgot->root.u.def.value;
10424 if (htab->plt_type == PLT_OLD)
10425 {
10426 /* Add a blrl instruction at _GLOBAL_OFFSET_TABLE_-4
10427 so that a function can easily find the address of
10428 _GLOBAL_OFFSET_TABLE_. */
10429 BFD_ASSERT (htab->elf.hgot->root.u.def.value - 4
10430 < htab->elf.hgot->root.u.def.section->size);
10431 bfd_put_32 (output_bfd, 0x4e800021, p - 4);
10432 }
10433
10434 if (sdyn != NULL)
10435 {
10436 bfd_vma val = sdyn->output_section->vma + sdyn->output_offset;
10437 BFD_ASSERT (htab->elf.hgot->root.u.def.value
10438 < htab->elf.hgot->root.u.def.section->size);
10439 bfd_put_32 (output_bfd, val, p);
10440 }
10441 }
10442 else
10443 {
10444 info->callbacks->einfo (_("%P: %s not defined in linker created %s\n"),
10445 htab->elf.hgot->root.root.string,
10446 (htab->sgotplt != NULL
10447 ? htab->sgotplt->name : htab->got->name));
10448 bfd_set_error (bfd_error_bad_value);
10449 ret = FALSE;
10450 }
10451
10452 elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 4;
10453 }
10454
10455 /* Fill in the first entry in the VxWorks procedure linkage table. */
10456 if (splt && splt->size > 0)
10457 {
10458 /* Use the right PLT. */
10459 const bfd_vma *plt_entry = (bfd_link_pic (info)
10460 ? ppc_elf_vxworks_pic_plt0_entry
10461 : ppc_elf_vxworks_plt0_entry);
10462
10463 if (!bfd_link_pic (info))
10464 {
10465 bfd_vma got_value = SYM_VAL (htab->elf.hgot);
10466
10467 bfd_put_32 (output_bfd, plt_entry[0] | PPC_HA (got_value),
10468 splt->contents + 0);
10469 bfd_put_32 (output_bfd, plt_entry[1] | PPC_LO (got_value),
10470 splt->contents + 4);
10471 }
10472 else
10473 {
10474 bfd_put_32 (output_bfd, plt_entry[0], splt->contents + 0);
10475 bfd_put_32 (output_bfd, plt_entry[1], splt->contents + 4);
10476 }
10477 bfd_put_32 (output_bfd, plt_entry[2], splt->contents + 8);
10478 bfd_put_32 (output_bfd, plt_entry[3], splt->contents + 12);
10479 bfd_put_32 (output_bfd, plt_entry[4], splt->contents + 16);
10480 bfd_put_32 (output_bfd, plt_entry[5], splt->contents + 20);
10481 bfd_put_32 (output_bfd, plt_entry[6], splt->contents + 24);
10482 bfd_put_32 (output_bfd, plt_entry[7], splt->contents + 28);
10483
10484 if (! bfd_link_pic (info))
10485 {
10486 Elf_Internal_Rela rela;
10487 bfd_byte *loc;
10488
10489 loc = htab->srelplt2->contents;
10490
10491 /* Output the @ha relocation for the first instruction. */
10492 rela.r_offset = (htab->plt->output_section->vma
10493 + htab->plt->output_offset
10494 + 2);
10495 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
10496 rela.r_addend = 0;
10497 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10498 loc += sizeof (Elf32_External_Rela);
10499
10500 /* Output the @l relocation for the second instruction. */
10501 rela.r_offset = (htab->plt->output_section->vma
10502 + htab->plt->output_offset
10503 + 6);
10504 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
10505 rela.r_addend = 0;
10506 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10507 loc += sizeof (Elf32_External_Rela);
10508
10509 /* Fix up the remaining relocations. They may have the wrong
10510 symbol index for _G_O_T_ or _P_L_T_ depending on the order
10511 in which symbols were output. */
10512 while (loc < htab->srelplt2->contents + htab->srelplt2->size)
10513 {
10514 Elf_Internal_Rela rel;
10515
10516 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
10517 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
10518 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
10519 loc += sizeof (Elf32_External_Rela);
10520
10521 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
10522 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
10523 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
10524 loc += sizeof (Elf32_External_Rela);
10525
10526 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
10527 rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_PPC_ADDR32);
10528 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
10529 loc += sizeof (Elf32_External_Rela);
10530 }
10531 }
10532 }
10533
10534 if (htab->glink != NULL
10535 && htab->glink->contents != NULL
10536 && htab->elf.dynamic_sections_created)
10537 {
10538 unsigned char *p;
10539 unsigned char *endp;
10540 bfd_vma res0;
10541 unsigned int i;
10542
10543 /*
10544 * PIC glink code is the following:
10545 *
10546 * # ith PLT code stub.
10547 * addis 11,30,(plt+(i-1)*4-got)@ha
10548 * lwz 11,(plt+(i-1)*4-got)@l(11)
10549 * mtctr 11
10550 * bctr
10551 *
10552 * # A table of branches, one for each plt entry.
10553 * # The idea is that the plt call stub loads ctr and r11 with these
10554 * # addresses, so (r11 - res_0) gives the plt index * 4.
10555 * res_0: b PLTresolve
10556 * res_1: b PLTresolve
10557 * .
10558 * # Some number of entries towards the end can be nops
10559 * res_n_m3: nop
10560 * res_n_m2: nop
10561 * res_n_m1:
10562 *
10563 * PLTresolve:
10564 * addis 11,11,(1f-res_0)@ha
10565 * mflr 0
10566 * bcl 20,31,1f
10567 * 1: addi 11,11,(1b-res_0)@l
10568 * mflr 12
10569 * mtlr 0
10570 * sub 11,11,12 # r11 = index * 4
10571 * addis 12,12,(got+4-1b)@ha
10572 * lwz 0,(got+4-1b)@l(12) # got[1] address of dl_runtime_resolve
10573 * lwz 12,(got+8-1b)@l(12) # got[2] contains the map address
10574 * mtctr 0
10575 * add 0,11,11
10576 * add 11,0,11 # r11 = index * 12 = reloc offset.
10577 * bctr
10578 */
10579 static const unsigned int pic_plt_resolve[] =
10580 {
10581 ADDIS_11_11,
10582 MFLR_0,
10583 BCL_20_31,
10584 ADDI_11_11,
10585 MFLR_12,
10586 MTLR_0,
10587 SUB_11_11_12,
10588 ADDIS_12_12,
10589 LWZ_0_12,
10590 LWZ_12_12,
10591 MTCTR_0,
10592 ADD_0_11_11,
10593 ADD_11_0_11,
10594 BCTR,
10595 NOP,
10596 NOP
10597 };
10598
10599 /*
10600 * Non-PIC glink code is a little simpler.
10601 *
10602 * # ith PLT code stub.
10603 * lis 11,(plt+(i-1)*4)@ha
10604 * lwz 11,(plt+(i-1)*4)@l(11)
10605 * mtctr 11
10606 * bctr
10607 *
10608 * The branch table is the same, then comes
10609 *
10610 * PLTresolve:
10611 * lis 12,(got+4)@ha
10612 * addis 11,11,(-res_0)@ha
10613 * lwz 0,(got+4)@l(12) # got[1] address of dl_runtime_resolve
10614 * addi 11,11,(-res_0)@l # r11 = index * 4
10615 * mtctr 0
10616 * add 0,11,11
10617 * lwz 12,(got+8)@l(12) # got[2] contains the map address
10618 * add 11,0,11 # r11 = index * 12 = reloc offset.
10619 * bctr
10620 */
10621 static const unsigned int plt_resolve[] =
10622 {
10623 LIS_12,
10624 ADDIS_11_11,
10625 LWZ_0_12,
10626 ADDI_11_11,
10627 MTCTR_0,
10628 ADD_0_11_11,
10629 LWZ_12_12,
10630 ADD_11_0_11,
10631 BCTR,
10632 NOP,
10633 NOP,
10634 NOP,
10635 NOP,
10636 NOP,
10637 NOP,
10638 NOP
10639 };
10640
10641 if (ARRAY_SIZE (pic_plt_resolve) != GLINK_PLTRESOLVE / 4)
10642 abort ();
10643 if (ARRAY_SIZE (plt_resolve) != GLINK_PLTRESOLVE / 4)
10644 abort ();
10645
10646 /* Build the branch table, one for each plt entry (less one),
10647 and perhaps some padding. */
10648 p = htab->glink->contents;
10649 p += htab->glink_pltresolve;
10650 endp = htab->glink->contents;
10651 endp += htab->glink->size - GLINK_PLTRESOLVE;
10652 while (p < endp - (htab->params->ppc476_workaround ? 0 : 8 * 4))
10653 {
10654 bfd_put_32 (output_bfd, B + endp - p, p);
10655 p += 4;
10656 }
10657 while (p < endp)
10658 {
10659 bfd_put_32 (output_bfd, NOP, p);
10660 p += 4;
10661 }
10662
10663 res0 = (htab->glink_pltresolve
10664 + htab->glink->output_section->vma
10665 + htab->glink->output_offset);
10666
10667 if (htab->params->ppc476_workaround)
10668 {
10669 /* Ensure that a call stub at the end of a page doesn't
10670 result in prefetch over the end of the page into the
10671 glink branch table. */
10672 bfd_vma pagesize = (bfd_vma) 1 << htab->params->pagesize_p2;
10673 bfd_vma page_addr;
10674 bfd_vma glink_start = (htab->glink->output_section->vma
10675 + htab->glink->output_offset);
10676
10677 for (page_addr = res0 & -pagesize;
10678 page_addr > glink_start;
10679 page_addr -= pagesize)
10680 {
10681 /* We have a plt call stub that may need fixing. */
10682 bfd_byte *loc;
10683 unsigned int insn;
10684
10685 loc = htab->glink->contents + page_addr - 4 - glink_start;
10686 insn = bfd_get_32 (output_bfd, loc);
10687 if (insn == BCTR)
10688 {
10689 /* By alignment, we know that there must be at least
10690 one other call stub before this one. */
10691 insn = bfd_get_32 (output_bfd, loc - 16);
10692 if (insn == BCTR)
10693 bfd_put_32 (output_bfd, B | (-16 & 0x3fffffc), loc);
10694 else
10695 bfd_put_32 (output_bfd, B | (-20 & 0x3fffffc), loc);
10696 }
10697 }
10698 }
10699
10700 /* Last comes the PLTresolve stub. */
10701 if (bfd_link_pic (info))
10702 {
10703 bfd_vma bcl;
10704
10705 for (i = 0; i < ARRAY_SIZE (pic_plt_resolve); i++)
10706 {
10707 unsigned int insn = pic_plt_resolve[i];
10708
10709 if (htab->params->ppc476_workaround && insn == NOP)
10710 insn = BA + 0;
10711 bfd_put_32 (output_bfd, insn, p);
10712 p += 4;
10713 }
10714 p -= 4 * ARRAY_SIZE (pic_plt_resolve);
10715
10716 bcl = (htab->glink->size - GLINK_PLTRESOLVE + 3*4
10717 + htab->glink->output_section->vma
10718 + htab->glink->output_offset);
10719
10720 bfd_put_32 (output_bfd,
10721 ADDIS_11_11 + PPC_HA (bcl - res0), p + 0*4);
10722 bfd_put_32 (output_bfd,
10723 ADDI_11_11 + PPC_LO (bcl - res0), p + 3*4);
10724 bfd_put_32 (output_bfd,
10725 ADDIS_12_12 + PPC_HA (got + 4 - bcl), p + 7*4);
10726 if (PPC_HA (got + 4 - bcl) == PPC_HA (got + 8 - bcl))
10727 {
10728 bfd_put_32 (output_bfd,
10729 LWZ_0_12 + PPC_LO (got + 4 - bcl), p + 8*4);
10730 bfd_put_32 (output_bfd,
10731 LWZ_12_12 + PPC_LO (got + 8 - bcl), p + 9*4);
10732 }
10733 else
10734 {
10735 bfd_put_32 (output_bfd,
10736 LWZU_0_12 + PPC_LO (got + 4 - bcl), p + 8*4);
10737 bfd_put_32 (output_bfd,
10738 LWZ_12_12 + 4, p + 9*4);
10739 }
10740 }
10741 else
10742 {
10743 for (i = 0; i < ARRAY_SIZE (plt_resolve); i++)
10744 {
10745 unsigned int insn = plt_resolve[i];
10746
10747 if (htab->params->ppc476_workaround && insn == NOP)
10748 insn = BA + 0;
10749 bfd_put_32 (output_bfd, insn, p);
10750 p += 4;
10751 }
10752 p -= 4 * ARRAY_SIZE (plt_resolve);
10753
10754 bfd_put_32 (output_bfd,
10755 LIS_12 + PPC_HA (got + 4), p + 0*4);
10756 bfd_put_32 (output_bfd,
10757 ADDIS_11_11 + PPC_HA (-res0), p + 1*4);
10758 bfd_put_32 (output_bfd,
10759 ADDI_11_11 + PPC_LO (-res0), p + 3*4);
10760 if (PPC_HA (got + 4) == PPC_HA (got + 8))
10761 {
10762 bfd_put_32 (output_bfd,
10763 LWZ_0_12 + PPC_LO (got + 4), p + 2*4);
10764 bfd_put_32 (output_bfd,
10765 LWZ_12_12 + PPC_LO (got + 8), p + 6*4);
10766 }
10767 else
10768 {
10769 bfd_put_32 (output_bfd,
10770 LWZU_0_12 + PPC_LO (got + 4), p + 2*4);
10771 bfd_put_32 (output_bfd,
10772 LWZ_12_12 + 4, p + 6*4);
10773 }
10774 }
10775 }
10776
10777 if (htab->glink_eh_frame != NULL
10778 && htab->glink_eh_frame->contents != NULL)
10779 {
10780 unsigned char *p = htab->glink_eh_frame->contents;
10781 bfd_vma val;
10782
10783 p += sizeof (glink_eh_frame_cie);
10784 /* FDE length. */
10785 p += 4;
10786 /* CIE pointer. */
10787 p += 4;
10788 /* Offset to .glink. */
10789 val = (htab->glink->output_section->vma
10790 + htab->glink->output_offset);
10791 val -= (htab->glink_eh_frame->output_section->vma
10792 + htab->glink_eh_frame->output_offset);
10793 val -= p - htab->glink_eh_frame->contents;
10794 bfd_put_32 (htab->elf.dynobj, val, p);
10795
10796 if (htab->glink_eh_frame->sec_info_type == SEC_INFO_TYPE_EH_FRAME
10797 && !_bfd_elf_write_section_eh_frame (output_bfd, info,
10798 htab->glink_eh_frame,
10799 htab->glink_eh_frame->contents))
10800 return FALSE;
10801 }
10802
10803 return ret;
10804 }
10805 \f
10806 #define TARGET_LITTLE_SYM powerpc_elf32_le_vec
10807 #define TARGET_LITTLE_NAME "elf32-powerpcle"
10808 #define TARGET_BIG_SYM powerpc_elf32_vec
10809 #define TARGET_BIG_NAME "elf32-powerpc"
10810 #define ELF_ARCH bfd_arch_powerpc
10811 #define ELF_TARGET_ID PPC32_ELF_DATA
10812 #define ELF_MACHINE_CODE EM_PPC
10813 #ifdef __QNXTARGET__
10814 #define ELF_MAXPAGESIZE 0x1000
10815 #define ELF_COMMONPAGESIZE 0x1000
10816 #else
10817 #define ELF_MAXPAGESIZE 0x10000
10818 #define ELF_COMMONPAGESIZE 0x10000
10819 #endif
10820 #define ELF_MINPAGESIZE 0x1000
10821 #define elf_info_to_howto ppc_elf_info_to_howto
10822
10823 #ifdef EM_CYGNUS_POWERPC
10824 #define ELF_MACHINE_ALT1 EM_CYGNUS_POWERPC
10825 #endif
10826
10827 #ifdef EM_PPC_OLD
10828 #define ELF_MACHINE_ALT2 EM_PPC_OLD
10829 #endif
10830
10831 #define elf_backend_plt_not_loaded 1
10832 #define elf_backend_can_gc_sections 1
10833 #define elf_backend_can_refcount 1
10834 #define elf_backend_rela_normal 1
10835 #define elf_backend_caches_rawsize 1
10836
10837 #define bfd_elf32_mkobject ppc_elf_mkobject
10838 #define bfd_elf32_bfd_merge_private_bfd_data ppc_elf_merge_private_bfd_data
10839 #define bfd_elf32_bfd_relax_section ppc_elf_relax_section
10840 #define bfd_elf32_bfd_reloc_type_lookup ppc_elf_reloc_type_lookup
10841 #define bfd_elf32_bfd_reloc_name_lookup ppc_elf_reloc_name_lookup
10842 #define bfd_elf32_bfd_set_private_flags ppc_elf_set_private_flags
10843 #define bfd_elf32_bfd_link_hash_table_create ppc_elf_link_hash_table_create
10844 #define bfd_elf32_get_synthetic_symtab ppc_elf_get_synthetic_symtab
10845
10846 #define elf_backend_object_p ppc_elf_object_p
10847 #define elf_backend_gc_mark_hook ppc_elf_gc_mark_hook
10848 #define elf_backend_gc_sweep_hook ppc_elf_gc_sweep_hook
10849 #define elf_backend_section_from_shdr ppc_elf_section_from_shdr
10850 #define elf_backend_relocate_section ppc_elf_relocate_section
10851 #define elf_backend_create_dynamic_sections ppc_elf_create_dynamic_sections
10852 #define elf_backend_check_relocs ppc_elf_check_relocs
10853 #define elf_backend_copy_indirect_symbol ppc_elf_copy_indirect_symbol
10854 #define elf_backend_adjust_dynamic_symbol ppc_elf_adjust_dynamic_symbol
10855 #define elf_backend_add_symbol_hook ppc_elf_add_symbol_hook
10856 #define elf_backend_size_dynamic_sections ppc_elf_size_dynamic_sections
10857 #define elf_backend_hash_symbol ppc_elf_hash_symbol
10858 #define elf_backend_finish_dynamic_symbol ppc_elf_finish_dynamic_symbol
10859 #define elf_backend_finish_dynamic_sections ppc_elf_finish_dynamic_sections
10860 #define elf_backend_fake_sections ppc_elf_fake_sections
10861 #define elf_backend_additional_program_headers ppc_elf_additional_program_headers
10862 #define elf_backend_modify_segment_map ppc_elf_modify_segment_map
10863 #define elf_backend_grok_prstatus ppc_elf_grok_prstatus
10864 #define elf_backend_grok_psinfo ppc_elf_grok_psinfo
10865 #define elf_backend_write_core_note ppc_elf_write_core_note
10866 #define elf_backend_reloc_type_class ppc_elf_reloc_type_class
10867 #define elf_backend_begin_write_processing ppc_elf_begin_write_processing
10868 #define elf_backend_final_write_processing ppc_elf_final_write_processing
10869 #define elf_backend_write_section ppc_elf_write_section
10870 #define elf_backend_get_sec_type_attr ppc_elf_get_sec_type_attr
10871 #define elf_backend_plt_sym_val ppc_elf_plt_sym_val
10872 #define elf_backend_action_discarded ppc_elf_action_discarded
10873 #define elf_backend_init_index_section _bfd_elf_init_1_index_section
10874 #define elf_backend_lookup_section_flags_hook ppc_elf_lookup_section_flags
10875
10876 #include "elf32-target.h"
10877
10878 /* FreeBSD Target */
10879
10880 #undef TARGET_LITTLE_SYM
10881 #undef TARGET_LITTLE_NAME
10882
10883 #undef TARGET_BIG_SYM
10884 #define TARGET_BIG_SYM powerpc_elf32_fbsd_vec
10885 #undef TARGET_BIG_NAME
10886 #define TARGET_BIG_NAME "elf32-powerpc-freebsd"
10887
10888 #undef ELF_OSABI
10889 #define ELF_OSABI ELFOSABI_FREEBSD
10890
10891 #undef elf32_bed
10892 #define elf32_bed elf32_powerpc_fbsd_bed
10893
10894 #include "elf32-target.h"
10895
10896 /* VxWorks Target */
10897
10898 #undef TARGET_LITTLE_SYM
10899 #undef TARGET_LITTLE_NAME
10900
10901 #undef TARGET_BIG_SYM
10902 #define TARGET_BIG_SYM powerpc_elf32_vxworks_vec
10903 #undef TARGET_BIG_NAME
10904 #define TARGET_BIG_NAME "elf32-powerpc-vxworks"
10905
10906 #undef ELF_OSABI
10907
10908 /* VxWorks uses the elf default section flags for .plt. */
10909 static const struct bfd_elf_special_section *
10910 ppc_elf_vxworks_get_sec_type_attr (bfd *abfd ATTRIBUTE_UNUSED, asection *sec)
10911 {
10912 if (sec->name == NULL)
10913 return NULL;
10914
10915 if (strcmp (sec->name, ".plt") == 0)
10916 return _bfd_elf_get_sec_type_attr (abfd, sec);
10917
10918 return ppc_elf_get_sec_type_attr (abfd, sec);
10919 }
10920
10921 /* Like ppc_elf_link_hash_table_create, but overrides
10922 appropriately for VxWorks. */
10923 static struct bfd_link_hash_table *
10924 ppc_elf_vxworks_link_hash_table_create (bfd *abfd)
10925 {
10926 struct bfd_link_hash_table *ret;
10927
10928 ret = ppc_elf_link_hash_table_create (abfd);
10929 if (ret)
10930 {
10931 struct ppc_elf_link_hash_table *htab
10932 = (struct ppc_elf_link_hash_table *)ret;
10933 htab->is_vxworks = 1;
10934 htab->plt_type = PLT_VXWORKS;
10935 htab->plt_entry_size = VXWORKS_PLT_ENTRY_SIZE;
10936 htab->plt_slot_size = VXWORKS_PLT_ENTRY_SIZE;
10937 htab->plt_initial_entry_size = VXWORKS_PLT_INITIAL_ENTRY_SIZE;
10938 }
10939 return ret;
10940 }
10941
10942 /* Tweak magic VxWorks symbols as they are loaded. */
10943 static bfd_boolean
10944 ppc_elf_vxworks_add_symbol_hook (bfd *abfd,
10945 struct bfd_link_info *info,
10946 Elf_Internal_Sym *sym,
10947 const char **namep ATTRIBUTE_UNUSED,
10948 flagword *flagsp ATTRIBUTE_UNUSED,
10949 asection **secp,
10950 bfd_vma *valp)
10951 {
10952 if (!elf_vxworks_add_symbol_hook(abfd, info, sym,namep, flagsp, secp,
10953 valp))
10954 return FALSE;
10955
10956 return ppc_elf_add_symbol_hook(abfd, info, sym,namep, flagsp, secp, valp);
10957 }
10958
10959 static void
10960 ppc_elf_vxworks_final_write_processing (bfd *abfd, bfd_boolean linker)
10961 {
10962 ppc_elf_final_write_processing(abfd, linker);
10963 elf_vxworks_final_write_processing(abfd, linker);
10964 }
10965
10966 /* On VxWorks, we emit relocations against _PROCEDURE_LINKAGE_TABLE_, so
10967 define it. */
10968 #undef elf_backend_want_plt_sym
10969 #define elf_backend_want_plt_sym 1
10970 #undef elf_backend_want_got_plt
10971 #define elf_backend_want_got_plt 1
10972 #undef elf_backend_got_symbol_offset
10973 #define elf_backend_got_symbol_offset 0
10974 #undef elf_backend_plt_not_loaded
10975 #define elf_backend_plt_not_loaded 0
10976 #undef elf_backend_plt_readonly
10977 #define elf_backend_plt_readonly 1
10978 #undef elf_backend_got_header_size
10979 #define elf_backend_got_header_size 12
10980
10981 #undef bfd_elf32_get_synthetic_symtab
10982
10983 #undef bfd_elf32_bfd_link_hash_table_create
10984 #define bfd_elf32_bfd_link_hash_table_create \
10985 ppc_elf_vxworks_link_hash_table_create
10986 #undef elf_backend_add_symbol_hook
10987 #define elf_backend_add_symbol_hook \
10988 ppc_elf_vxworks_add_symbol_hook
10989 #undef elf_backend_link_output_symbol_hook
10990 #define elf_backend_link_output_symbol_hook \
10991 elf_vxworks_link_output_symbol_hook
10992 #undef elf_backend_final_write_processing
10993 #define elf_backend_final_write_processing \
10994 ppc_elf_vxworks_final_write_processing
10995 #undef elf_backend_get_sec_type_attr
10996 #define elf_backend_get_sec_type_attr \
10997 ppc_elf_vxworks_get_sec_type_attr
10998 #undef elf_backend_emit_relocs
10999 #define elf_backend_emit_relocs \
11000 elf_vxworks_emit_relocs
11001
11002 #undef elf32_bed
11003 #define elf32_bed ppc_elf_vxworks_bed
11004 #undef elf_backend_post_process_headers
11005
11006 #include "elf32-target.h"
GDB Binutils - Deliverables
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