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PowerPC PLT speculative execution barriers
[deliverable/binutils-gdb.git] / bfd / elf32-ppc.c
1 /* PowerPC-specific support for 32-bit ELF
2 Copyright (C) 1994-2018 Free Software Foundation, Inc.
3 Written by Ian Lance Taylor, Cygnus Support.
4
5 This file is part of BFD, the Binary File Descriptor library.
6
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
11
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
16
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the
19 Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor,
20 Boston, MA 02110-1301, USA. */
21
22
23 /* This file is based on a preliminary PowerPC ELF ABI. The
24 information may not match the final PowerPC ELF ABI. It includes
25 suggestions from the in-progress Embedded PowerPC ABI, and that
26 information may also not match. */
27
28 #include "sysdep.h"
29 #include <stdarg.h>
30 #include "bfd.h"
31 #include "bfdlink.h"
32 #include "libbfd.h"
33 #include "elf-bfd.h"
34 #include "elf/ppc.h"
35 #include "elf32-ppc.h"
36 #include "elf-vxworks.h"
37 #include "dwarf2.h"
38 #include "opcode/ppc.h"
39
40 typedef enum split16_format_type
41 {
42 split16a_type = 0,
43 split16d_type
44 }
45 split16_format_type;
46
47 /* RELA relocations are used here. */
48
49 static bfd_reloc_status_type ppc_elf_addr16_ha_reloc
50 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
51 static bfd_reloc_status_type ppc_elf_unhandled_reloc
52 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
53
54 /* Branch prediction bit for branch taken relocs. */
55 #define BRANCH_PREDICT_BIT 0x200000
56 /* Mask to set RA in memory instructions. */
57 #define RA_REGISTER_MASK 0x001f0000
58 /* Value to shift register by to insert RA. */
59 #define RA_REGISTER_SHIFT 16
60
61 /* The name of the dynamic interpreter. This is put in the .interp
62 section. */
63 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
64
65 /* For old-style PLT. */
66 /* The number of single-slot PLT entries (the rest use two slots). */
67 #define PLT_NUM_SINGLE_ENTRIES 8192
68
69 /* For new-style .glink and .plt. */
70 #define GLINK_PLTRESOLVE 16*4
71 #define GLINK_ENTRY_SIZE(htab, h) \
72 (((!htab->params->speculate_indirect_jumps ? 6*4 : 4*4) \
73 + (h != NULL \
74 && h == htab->tls_get_addr \
75 && !htab->params->no_tls_get_addr_opt ? 8*4 : 0) \
76 + (1u << htab->params->plt_stub_align) - 1) \
77 & -(1u << htab->params->plt_stub_align))
78
79 /* VxWorks uses its own plt layout, filled in by the static linker. */
80
81 /* The standard VxWorks PLT entry. */
82 #define VXWORKS_PLT_ENTRY_SIZE 32
83 static const bfd_vma ppc_elf_vxworks_plt_entry
84 [VXWORKS_PLT_ENTRY_SIZE / 4] =
85 {
86 0x3d800000, /* lis r12,0 */
87 0x818c0000, /* lwz r12,0(r12) */
88 0x7d8903a6, /* mtctr r12 */
89 0x4e800420, /* bctr */
90 0x39600000, /* li r11,0 */
91 0x48000000, /* b 14 <.PLT0resolve+0x4> */
92 0x60000000, /* nop */
93 0x60000000, /* nop */
94 };
95 static const bfd_vma ppc_elf_vxworks_pic_plt_entry
96 [VXWORKS_PLT_ENTRY_SIZE / 4] =
97 {
98 0x3d9e0000, /* addis r12,r30,0 */
99 0x818c0000, /* lwz r12,0(r12) */
100 0x7d8903a6, /* mtctr r12 */
101 0x4e800420, /* bctr */
102 0x39600000, /* li r11,0 */
103 0x48000000, /* b 14 <.PLT0resolve+0x4> 14: R_PPC_REL24 .PLTresolve */
104 0x60000000, /* nop */
105 0x60000000, /* nop */
106 };
107
108 /* The initial VxWorks PLT entry. */
109 #define VXWORKS_PLT_INITIAL_ENTRY_SIZE 32
110 static const bfd_vma ppc_elf_vxworks_plt0_entry
111 [VXWORKS_PLT_INITIAL_ENTRY_SIZE / 4] =
112 {
113 0x3d800000, /* lis r12,0 */
114 0x398c0000, /* addi r12,r12,0 */
115 0x800c0008, /* lwz r0,8(r12) */
116 0x7c0903a6, /* mtctr r0 */
117 0x818c0004, /* lwz r12,4(r12) */
118 0x4e800420, /* bctr */
119 0x60000000, /* nop */
120 0x60000000, /* nop */
121 };
122 static const bfd_vma ppc_elf_vxworks_pic_plt0_entry
123 [VXWORKS_PLT_INITIAL_ENTRY_SIZE / 4] =
124 {
125 0x819e0008, /* lwz r12,8(r30) */
126 0x7d8903a6, /* mtctr r12 */
127 0x819e0004, /* lwz r12,4(r30) */
128 0x4e800420, /* bctr */
129 0x60000000, /* nop */
130 0x60000000, /* nop */
131 0x60000000, /* nop */
132 0x60000000, /* nop */
133 };
134
135 /* For executables, we have some additional relocations in
136 .rela.plt.unloaded, for the kernel loader. */
137
138 /* The number of non-JMP_SLOT relocations per PLT0 slot. */
139 #define VXWORKS_PLT_NON_JMP_SLOT_RELOCS 3
140 /* The number of relocations in the PLTResolve slot. */
141 #define VXWORKS_PLTRESOLVE_RELOCS 2
142 /* The number of relocations in the PLTResolve slot when creating
143 a shared library. */
144 #define VXWORKS_PLTRESOLVE_RELOCS_SHLIB 0
145
146 /* Some instructions. */
147 #define ADDIS_11_11 0x3d6b0000
148 #define ADDIS_11_30 0x3d7e0000
149 #define ADDIS_12_12 0x3d8c0000
150 #define ADDI_11_11 0x396b0000
151 #define ADD_0_11_11 0x7c0b5a14
152 #define ADD_3_12_2 0x7c6c1214
153 #define ADD_11_0_11 0x7d605a14
154 #define B 0x48000000
155 #define BA 0x48000002
156 #define BCL_20_31 0x429f0005
157 #define BCTR 0x4e800420
158 #define CRSETEQ 0x4c421242
159 #define BEQCTRM 0x4dc20420
160 #define BEQLR 0x4d820020
161 #define CMPWI_11_0 0x2c0b0000
162 #define LIS_11 0x3d600000
163 #define LIS_12 0x3d800000
164 #define LWZU_0_12 0x840c0000
165 #define LWZ_0_12 0x800c0000
166 #define LWZ_11_3 0x81630000
167 #define LWZ_11_11 0x816b0000
168 #define LWZ_11_30 0x817e0000
169 #define LWZ_12_3 0x81830000
170 #define LWZ_12_12 0x818c0000
171 #define MR_0_3 0x7c601b78
172 #define MR_3_0 0x7c030378
173 #define MFLR_0 0x7c0802a6
174 #define MFLR_12 0x7d8802a6
175 #define MTCTR_0 0x7c0903a6
176 #define MTCTR_11 0x7d6903a6
177 #define MTLR_0 0x7c0803a6
178 #define NOP 0x60000000
179 #define SUB_11_11_12 0x7d6c5850
180
181 /* Offset of tp and dtp pointers from start of TLS block. */
182 #define TP_OFFSET 0x7000
183 #define DTP_OFFSET 0x8000
184
185 /* The value of a defined global symbol. */
186 #define SYM_VAL(SYM) \
187 ((SYM)->root.u.def.section->output_section->vma \
188 + (SYM)->root.u.def.section->output_offset \
189 + (SYM)->root.u.def.value)
190 \f
191 static reloc_howto_type *ppc_elf_howto_table[R_PPC_max];
192
193 static reloc_howto_type ppc_elf_howto_raw[] = {
194 /* This reloc does nothing. */
195 HOWTO (R_PPC_NONE, /* type */
196 0, /* rightshift */
197 3, /* size (0 = byte, 1 = short, 2 = long) */
198 0, /* bitsize */
199 FALSE, /* pc_relative */
200 0, /* bitpos */
201 complain_overflow_dont, /* complain_on_overflow */
202 bfd_elf_generic_reloc, /* special_function */
203 "R_PPC_NONE", /* name */
204 FALSE, /* partial_inplace */
205 0, /* src_mask */
206 0, /* dst_mask */
207 FALSE), /* pcrel_offset */
208
209 /* A standard 32 bit relocation. */
210 HOWTO (R_PPC_ADDR32, /* type */
211 0, /* rightshift */
212 2, /* size (0 = byte, 1 = short, 2 = long) */
213 32, /* bitsize */
214 FALSE, /* pc_relative */
215 0, /* bitpos */
216 complain_overflow_dont, /* complain_on_overflow */
217 bfd_elf_generic_reloc, /* special_function */
218 "R_PPC_ADDR32", /* name */
219 FALSE, /* partial_inplace */
220 0, /* src_mask */
221 0xffffffff, /* dst_mask */
222 FALSE), /* pcrel_offset */
223
224 /* An absolute 26 bit branch; the lower two bits must be zero.
225 FIXME: we don't check that, we just clear them. */
226 HOWTO (R_PPC_ADDR24, /* type */
227 0, /* rightshift */
228 2, /* size (0 = byte, 1 = short, 2 = long) */
229 26, /* bitsize */
230 FALSE, /* pc_relative */
231 0, /* bitpos */
232 complain_overflow_signed, /* complain_on_overflow */
233 bfd_elf_generic_reloc, /* special_function */
234 "R_PPC_ADDR24", /* name */
235 FALSE, /* partial_inplace */
236 0, /* src_mask */
237 0x3fffffc, /* dst_mask */
238 FALSE), /* pcrel_offset */
239
240 /* A standard 16 bit relocation. */
241 HOWTO (R_PPC_ADDR16, /* type */
242 0, /* rightshift */
243 1, /* size (0 = byte, 1 = short, 2 = long) */
244 16, /* bitsize */
245 FALSE, /* pc_relative */
246 0, /* bitpos */
247 complain_overflow_bitfield, /* complain_on_overflow */
248 bfd_elf_generic_reloc, /* special_function */
249 "R_PPC_ADDR16", /* name */
250 FALSE, /* partial_inplace */
251 0, /* src_mask */
252 0xffff, /* dst_mask */
253 FALSE), /* pcrel_offset */
254
255 /* A 16 bit relocation without overflow. */
256 HOWTO (R_PPC_ADDR16_LO, /* type */
257 0, /* rightshift */
258 1, /* size (0 = byte, 1 = short, 2 = long) */
259 16, /* bitsize */
260 FALSE, /* pc_relative */
261 0, /* bitpos */
262 complain_overflow_dont,/* complain_on_overflow */
263 bfd_elf_generic_reloc, /* special_function */
264 "R_PPC_ADDR16_LO", /* name */
265 FALSE, /* partial_inplace */
266 0, /* src_mask */
267 0xffff, /* dst_mask */
268 FALSE), /* pcrel_offset */
269
270 /* The high order 16 bits of an address. */
271 HOWTO (R_PPC_ADDR16_HI, /* type */
272 16, /* rightshift */
273 1, /* size (0 = byte, 1 = short, 2 = long) */
274 16, /* bitsize */
275 FALSE, /* pc_relative */
276 0, /* bitpos */
277 complain_overflow_dont, /* complain_on_overflow */
278 bfd_elf_generic_reloc, /* special_function */
279 "R_PPC_ADDR16_HI", /* name */
280 FALSE, /* partial_inplace */
281 0, /* src_mask */
282 0xffff, /* dst_mask */
283 FALSE), /* pcrel_offset */
284
285 /* The high order 16 bits of an address, plus 1 if the contents of
286 the low 16 bits, treated as a signed number, is negative. */
287 HOWTO (R_PPC_ADDR16_HA, /* type */
288 16, /* rightshift */
289 1, /* size (0 = byte, 1 = short, 2 = long) */
290 16, /* bitsize */
291 FALSE, /* pc_relative */
292 0, /* bitpos */
293 complain_overflow_dont, /* complain_on_overflow */
294 ppc_elf_addr16_ha_reloc, /* special_function */
295 "R_PPC_ADDR16_HA", /* name */
296 FALSE, /* partial_inplace */
297 0, /* src_mask */
298 0xffff, /* dst_mask */
299 FALSE), /* pcrel_offset */
300
301 /* An absolute 16 bit branch; the lower two bits must be zero.
302 FIXME: we don't check that, we just clear them. */
303 HOWTO (R_PPC_ADDR14, /* type */
304 0, /* rightshift */
305 2, /* size (0 = byte, 1 = short, 2 = long) */
306 16, /* bitsize */
307 FALSE, /* pc_relative */
308 0, /* bitpos */
309 complain_overflow_signed, /* complain_on_overflow */
310 bfd_elf_generic_reloc, /* special_function */
311 "R_PPC_ADDR14", /* name */
312 FALSE, /* partial_inplace */
313 0, /* src_mask */
314 0xfffc, /* dst_mask */
315 FALSE), /* pcrel_offset */
316
317 /* An absolute 16 bit branch, for which bit 10 should be set to
318 indicate that the branch is expected to be taken. The lower two
319 bits must be zero. */
320 HOWTO (R_PPC_ADDR14_BRTAKEN, /* type */
321 0, /* rightshift */
322 2, /* size (0 = byte, 1 = short, 2 = long) */
323 16, /* bitsize */
324 FALSE, /* pc_relative */
325 0, /* bitpos */
326 complain_overflow_signed, /* complain_on_overflow */
327 bfd_elf_generic_reloc, /* special_function */
328 "R_PPC_ADDR14_BRTAKEN",/* name */
329 FALSE, /* partial_inplace */
330 0, /* src_mask */
331 0xfffc, /* dst_mask */
332 FALSE), /* pcrel_offset */
333
334 /* An absolute 16 bit branch, for which bit 10 should be set to
335 indicate that the branch is not expected to be taken. The lower
336 two bits must be zero. */
337 HOWTO (R_PPC_ADDR14_BRNTAKEN, /* type */
338 0, /* rightshift */
339 2, /* size (0 = byte, 1 = short, 2 = long) */
340 16, /* bitsize */
341 FALSE, /* pc_relative */
342 0, /* bitpos */
343 complain_overflow_signed, /* complain_on_overflow */
344 bfd_elf_generic_reloc, /* special_function */
345 "R_PPC_ADDR14_BRNTAKEN",/* name */
346 FALSE, /* partial_inplace */
347 0, /* src_mask */
348 0xfffc, /* dst_mask */
349 FALSE), /* pcrel_offset */
350
351 /* A relative 26 bit branch; the lower two bits must be zero. */
352 HOWTO (R_PPC_REL24, /* type */
353 0, /* rightshift */
354 2, /* size (0 = byte, 1 = short, 2 = long) */
355 26, /* bitsize */
356 TRUE, /* pc_relative */
357 0, /* bitpos */
358 complain_overflow_signed, /* complain_on_overflow */
359 bfd_elf_generic_reloc, /* special_function */
360 "R_PPC_REL24", /* name */
361 FALSE, /* partial_inplace */
362 0, /* src_mask */
363 0x3fffffc, /* dst_mask */
364 TRUE), /* pcrel_offset */
365
366 /* A relative 16 bit branch; the lower two bits must be zero. */
367 HOWTO (R_PPC_REL14, /* type */
368 0, /* rightshift */
369 2, /* size (0 = byte, 1 = short, 2 = long) */
370 16, /* bitsize */
371 TRUE, /* pc_relative */
372 0, /* bitpos */
373 complain_overflow_signed, /* complain_on_overflow */
374 bfd_elf_generic_reloc, /* special_function */
375 "R_PPC_REL14", /* name */
376 FALSE, /* partial_inplace */
377 0, /* src_mask */
378 0xfffc, /* dst_mask */
379 TRUE), /* pcrel_offset */
380
381 /* A relative 16 bit branch. Bit 10 should be set to indicate that
382 the branch is expected to be taken. The lower two bits must be
383 zero. */
384 HOWTO (R_PPC_REL14_BRTAKEN, /* type */
385 0, /* rightshift */
386 2, /* size (0 = byte, 1 = short, 2 = long) */
387 16, /* bitsize */
388 TRUE, /* pc_relative */
389 0, /* bitpos */
390 complain_overflow_signed, /* complain_on_overflow */
391 bfd_elf_generic_reloc, /* special_function */
392 "R_PPC_REL14_BRTAKEN", /* name */
393 FALSE, /* partial_inplace */
394 0, /* src_mask */
395 0xfffc, /* dst_mask */
396 TRUE), /* pcrel_offset */
397
398 /* A relative 16 bit branch. Bit 10 should be set to indicate that
399 the branch is not expected to be taken. The lower two bits must
400 be zero. */
401 HOWTO (R_PPC_REL14_BRNTAKEN, /* type */
402 0, /* rightshift */
403 2, /* size (0 = byte, 1 = short, 2 = long) */
404 16, /* bitsize */
405 TRUE, /* pc_relative */
406 0, /* bitpos */
407 complain_overflow_signed, /* complain_on_overflow */
408 bfd_elf_generic_reloc, /* special_function */
409 "R_PPC_REL14_BRNTAKEN",/* name */
410 FALSE, /* partial_inplace */
411 0, /* src_mask */
412 0xfffc, /* dst_mask */
413 TRUE), /* pcrel_offset */
414
415 /* Like R_PPC_ADDR16, but referring to the GOT table entry for the
416 symbol. */
417 HOWTO (R_PPC_GOT16, /* type */
418 0, /* rightshift */
419 1, /* size (0 = byte, 1 = short, 2 = long) */
420 16, /* bitsize */
421 FALSE, /* pc_relative */
422 0, /* bitpos */
423 complain_overflow_signed, /* complain_on_overflow */
424 ppc_elf_unhandled_reloc, /* special_function */
425 "R_PPC_GOT16", /* name */
426 FALSE, /* partial_inplace */
427 0, /* src_mask */
428 0xffff, /* dst_mask */
429 FALSE), /* pcrel_offset */
430
431 /* Like R_PPC_ADDR16_LO, but referring to the GOT table entry for
432 the symbol. */
433 HOWTO (R_PPC_GOT16_LO, /* type */
434 0, /* rightshift */
435 1, /* size (0 = byte, 1 = short, 2 = long) */
436 16, /* bitsize */
437 FALSE, /* pc_relative */
438 0, /* bitpos */
439 complain_overflow_dont, /* complain_on_overflow */
440 ppc_elf_unhandled_reloc, /* special_function */
441 "R_PPC_GOT16_LO", /* name */
442 FALSE, /* partial_inplace */
443 0, /* src_mask */
444 0xffff, /* dst_mask */
445 FALSE), /* pcrel_offset */
446
447 /* Like R_PPC_ADDR16_HI, but referring to the GOT table entry for
448 the symbol. */
449 HOWTO (R_PPC_GOT16_HI, /* type */
450 16, /* rightshift */
451 1, /* size (0 = byte, 1 = short, 2 = long) */
452 16, /* bitsize */
453 FALSE, /* pc_relative */
454 0, /* bitpos */
455 complain_overflow_dont, /* complain_on_overflow */
456 ppc_elf_unhandled_reloc, /* special_function */
457 "R_PPC_GOT16_HI", /* name */
458 FALSE, /* partial_inplace */
459 0, /* src_mask */
460 0xffff, /* dst_mask */
461 FALSE), /* pcrel_offset */
462
463 /* Like R_PPC_ADDR16_HA, but referring to the GOT table entry for
464 the symbol. */
465 HOWTO (R_PPC_GOT16_HA, /* type */
466 16, /* rightshift */
467 1, /* size (0 = byte, 1 = short, 2 = long) */
468 16, /* bitsize */
469 FALSE, /* pc_relative */
470 0, /* bitpos */
471 complain_overflow_dont, /* complain_on_overflow */
472 ppc_elf_unhandled_reloc, /* special_function */
473 "R_PPC_GOT16_HA", /* name */
474 FALSE, /* partial_inplace */
475 0, /* src_mask */
476 0xffff, /* dst_mask */
477 FALSE), /* pcrel_offset */
478
479 /* Like R_PPC_REL24, but referring to the procedure linkage table
480 entry for the symbol. */
481 HOWTO (R_PPC_PLTREL24, /* type */
482 0, /* rightshift */
483 2, /* size (0 = byte, 1 = short, 2 = long) */
484 26, /* bitsize */
485 TRUE, /* pc_relative */
486 0, /* bitpos */
487 complain_overflow_signed, /* complain_on_overflow */
488 ppc_elf_unhandled_reloc, /* special_function */
489 "R_PPC_PLTREL24", /* name */
490 FALSE, /* partial_inplace */
491 0, /* src_mask */
492 0x3fffffc, /* dst_mask */
493 TRUE), /* pcrel_offset */
494
495 /* This is used only by the dynamic linker. The symbol should exist
496 both in the object being run and in some shared library. The
497 dynamic linker copies the data addressed by the symbol from the
498 shared library into the object, because the object being
499 run has to have the data at some particular address. */
500 HOWTO (R_PPC_COPY, /* type */
501 0, /* rightshift */
502 2, /* size (0 = byte, 1 = short, 2 = long) */
503 32, /* bitsize */
504 FALSE, /* pc_relative */
505 0, /* bitpos */
506 complain_overflow_dont, /* complain_on_overflow */
507 ppc_elf_unhandled_reloc, /* special_function */
508 "R_PPC_COPY", /* name */
509 FALSE, /* partial_inplace */
510 0, /* src_mask */
511 0, /* dst_mask */
512 FALSE), /* pcrel_offset */
513
514 /* Like R_PPC_ADDR32, but used when setting global offset table
515 entries. */
516 HOWTO (R_PPC_GLOB_DAT, /* type */
517 0, /* rightshift */
518 2, /* size (0 = byte, 1 = short, 2 = long) */
519 32, /* bitsize */
520 FALSE, /* pc_relative */
521 0, /* bitpos */
522 complain_overflow_dont, /* complain_on_overflow */
523 ppc_elf_unhandled_reloc, /* special_function */
524 "R_PPC_GLOB_DAT", /* name */
525 FALSE, /* partial_inplace */
526 0, /* src_mask */
527 0xffffffff, /* dst_mask */
528 FALSE), /* pcrel_offset */
529
530 /* Marks a procedure linkage table entry for a symbol. */
531 HOWTO (R_PPC_JMP_SLOT, /* type */
532 0, /* rightshift */
533 2, /* size (0 = byte, 1 = short, 2 = long) */
534 32, /* bitsize */
535 FALSE, /* pc_relative */
536 0, /* bitpos */
537 complain_overflow_dont, /* complain_on_overflow */
538 ppc_elf_unhandled_reloc, /* special_function */
539 "R_PPC_JMP_SLOT", /* name */
540 FALSE, /* partial_inplace */
541 0, /* src_mask */
542 0, /* dst_mask */
543 FALSE), /* pcrel_offset */
544
545 /* Used only by the dynamic linker. When the object is run, this
546 longword is set to the load address of the object, plus the
547 addend. */
548 HOWTO (R_PPC_RELATIVE, /* type */
549 0, /* rightshift */
550 2, /* size (0 = byte, 1 = short, 2 = long) */
551 32, /* bitsize */
552 FALSE, /* pc_relative */
553 0, /* bitpos */
554 complain_overflow_dont, /* complain_on_overflow */
555 bfd_elf_generic_reloc, /* special_function */
556 "R_PPC_RELATIVE", /* name */
557 FALSE, /* partial_inplace */
558 0, /* src_mask */
559 0xffffffff, /* dst_mask */
560 FALSE), /* pcrel_offset */
561
562 /* Like R_PPC_REL24, but uses the value of the symbol within the
563 object rather than the final value. Normally used for
564 _GLOBAL_OFFSET_TABLE_. */
565 HOWTO (R_PPC_LOCAL24PC, /* type */
566 0, /* rightshift */
567 2, /* size (0 = byte, 1 = short, 2 = long) */
568 26, /* bitsize */
569 TRUE, /* pc_relative */
570 0, /* bitpos */
571 complain_overflow_signed, /* complain_on_overflow */
572 bfd_elf_generic_reloc, /* special_function */
573 "R_PPC_LOCAL24PC", /* name */
574 FALSE, /* partial_inplace */
575 0, /* src_mask */
576 0x3fffffc, /* dst_mask */
577 TRUE), /* pcrel_offset */
578
579 /* Like R_PPC_ADDR32, but may be unaligned. */
580 HOWTO (R_PPC_UADDR32, /* type */
581 0, /* rightshift */
582 2, /* size (0 = byte, 1 = short, 2 = long) */
583 32, /* bitsize */
584 FALSE, /* pc_relative */
585 0, /* bitpos */
586 complain_overflow_dont, /* complain_on_overflow */
587 bfd_elf_generic_reloc, /* special_function */
588 "R_PPC_UADDR32", /* name */
589 FALSE, /* partial_inplace */
590 0, /* src_mask */
591 0xffffffff, /* dst_mask */
592 FALSE), /* pcrel_offset */
593
594 /* Like R_PPC_ADDR16, but may be unaligned. */
595 HOWTO (R_PPC_UADDR16, /* type */
596 0, /* rightshift */
597 1, /* size (0 = byte, 1 = short, 2 = long) */
598 16, /* bitsize */
599 FALSE, /* pc_relative */
600 0, /* bitpos */
601 complain_overflow_bitfield, /* complain_on_overflow */
602 bfd_elf_generic_reloc, /* special_function */
603 "R_PPC_UADDR16", /* name */
604 FALSE, /* partial_inplace */
605 0, /* src_mask */
606 0xffff, /* dst_mask */
607 FALSE), /* pcrel_offset */
608
609 /* 32-bit PC relative */
610 HOWTO (R_PPC_REL32, /* type */
611 0, /* rightshift */
612 2, /* size (0 = byte, 1 = short, 2 = long) */
613 32, /* bitsize */
614 TRUE, /* pc_relative */
615 0, /* bitpos */
616 complain_overflow_dont, /* complain_on_overflow */
617 bfd_elf_generic_reloc, /* special_function */
618 "R_PPC_REL32", /* name */
619 FALSE, /* partial_inplace */
620 0, /* src_mask */
621 0xffffffff, /* dst_mask */
622 TRUE), /* pcrel_offset */
623
624 /* 32-bit relocation to the symbol's procedure linkage table.
625 FIXME: not supported. */
626 HOWTO (R_PPC_PLT32, /* type */
627 0, /* rightshift */
628 2, /* size (0 = byte, 1 = short, 2 = long) */
629 32, /* bitsize */
630 FALSE, /* pc_relative */
631 0, /* bitpos */
632 complain_overflow_dont, /* complain_on_overflow */
633 ppc_elf_unhandled_reloc, /* special_function */
634 "R_PPC_PLT32", /* name */
635 FALSE, /* partial_inplace */
636 0, /* src_mask */
637 0, /* dst_mask */
638 FALSE), /* pcrel_offset */
639
640 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
641 FIXME: not supported. */
642 HOWTO (R_PPC_PLTREL32, /* type */
643 0, /* rightshift */
644 2, /* size (0 = byte, 1 = short, 2 = long) */
645 32, /* bitsize */
646 TRUE, /* pc_relative */
647 0, /* bitpos */
648 complain_overflow_dont, /* complain_on_overflow */
649 ppc_elf_unhandled_reloc, /* special_function */
650 "R_PPC_PLTREL32", /* name */
651 FALSE, /* partial_inplace */
652 0, /* src_mask */
653 0, /* dst_mask */
654 TRUE), /* pcrel_offset */
655
656 /* Like R_PPC_ADDR16_LO, but referring to the PLT table entry for
657 the symbol. */
658 HOWTO (R_PPC_PLT16_LO, /* type */
659 0, /* rightshift */
660 1, /* size (0 = byte, 1 = short, 2 = long) */
661 16, /* bitsize */
662 FALSE, /* pc_relative */
663 0, /* bitpos */
664 complain_overflow_dont, /* complain_on_overflow */
665 ppc_elf_unhandled_reloc, /* special_function */
666 "R_PPC_PLT16_LO", /* name */
667 FALSE, /* partial_inplace */
668 0, /* src_mask */
669 0xffff, /* dst_mask */
670 FALSE), /* pcrel_offset */
671
672 /* Like R_PPC_ADDR16_HI, but referring to the PLT table entry for
673 the symbol. */
674 HOWTO (R_PPC_PLT16_HI, /* type */
675 16, /* rightshift */
676 1, /* size (0 = byte, 1 = short, 2 = long) */
677 16, /* bitsize */
678 FALSE, /* pc_relative */
679 0, /* bitpos */
680 complain_overflow_dont, /* complain_on_overflow */
681 ppc_elf_unhandled_reloc, /* special_function */
682 "R_PPC_PLT16_HI", /* name */
683 FALSE, /* partial_inplace */
684 0, /* src_mask */
685 0xffff, /* dst_mask */
686 FALSE), /* pcrel_offset */
687
688 /* Like R_PPC_ADDR16_HA, but referring to the PLT table entry for
689 the symbol. */
690 HOWTO (R_PPC_PLT16_HA, /* type */
691 16, /* rightshift */
692 1, /* size (0 = byte, 1 = short, 2 = long) */
693 16, /* bitsize */
694 FALSE, /* pc_relative */
695 0, /* bitpos */
696 complain_overflow_dont, /* complain_on_overflow */
697 ppc_elf_unhandled_reloc, /* special_function */
698 "R_PPC_PLT16_HA", /* name */
699 FALSE, /* partial_inplace */
700 0, /* src_mask */
701 0xffff, /* dst_mask */
702 FALSE), /* pcrel_offset */
703
704 /* A sign-extended 16 bit value relative to _SDA_BASE_, for use with
705 small data items. */
706 HOWTO (R_PPC_SDAREL16, /* type */
707 0, /* rightshift */
708 1, /* size (0 = byte, 1 = short, 2 = long) */
709 16, /* bitsize */
710 FALSE, /* pc_relative */
711 0, /* bitpos */
712 complain_overflow_signed, /* complain_on_overflow */
713 ppc_elf_unhandled_reloc, /* special_function */
714 "R_PPC_SDAREL16", /* name */
715 FALSE, /* partial_inplace */
716 0, /* src_mask */
717 0xffff, /* dst_mask */
718 FALSE), /* pcrel_offset */
719
720 /* 16-bit section relative relocation. */
721 HOWTO (R_PPC_SECTOFF, /* type */
722 0, /* rightshift */
723 1, /* size (0 = byte, 1 = short, 2 = long) */
724 16, /* bitsize */
725 FALSE, /* pc_relative */
726 0, /* bitpos */
727 complain_overflow_signed, /* complain_on_overflow */
728 ppc_elf_unhandled_reloc, /* special_function */
729 "R_PPC_SECTOFF", /* name */
730 FALSE, /* partial_inplace */
731 0, /* src_mask */
732 0xffff, /* dst_mask */
733 FALSE), /* pcrel_offset */
734
735 /* 16-bit lower half section relative relocation. */
736 HOWTO (R_PPC_SECTOFF_LO, /* type */
737 0, /* rightshift */
738 1, /* size (0 = byte, 1 = short, 2 = long) */
739 16, /* bitsize */
740 FALSE, /* pc_relative */
741 0, /* bitpos */
742 complain_overflow_dont, /* complain_on_overflow */
743 ppc_elf_unhandled_reloc, /* special_function */
744 "R_PPC_SECTOFF_LO", /* name */
745 FALSE, /* partial_inplace */
746 0, /* src_mask */
747 0xffff, /* dst_mask */
748 FALSE), /* pcrel_offset */
749
750 /* 16-bit upper half section relative relocation. */
751 HOWTO (R_PPC_SECTOFF_HI, /* type */
752 16, /* rightshift */
753 1, /* size (0 = byte, 1 = short, 2 = long) */
754 16, /* bitsize */
755 FALSE, /* pc_relative */
756 0, /* bitpos */
757 complain_overflow_dont, /* complain_on_overflow */
758 ppc_elf_unhandled_reloc, /* special_function */
759 "R_PPC_SECTOFF_HI", /* name */
760 FALSE, /* partial_inplace */
761 0, /* src_mask */
762 0xffff, /* dst_mask */
763 FALSE), /* pcrel_offset */
764
765 /* 16-bit upper half adjusted section relative relocation. */
766 HOWTO (R_PPC_SECTOFF_HA, /* type */
767 16, /* rightshift */
768 1, /* size (0 = byte, 1 = short, 2 = long) */
769 16, /* bitsize */
770 FALSE, /* pc_relative */
771 0, /* bitpos */
772 complain_overflow_dont, /* complain_on_overflow */
773 ppc_elf_unhandled_reloc, /* special_function */
774 "R_PPC_SECTOFF_HA", /* name */
775 FALSE, /* partial_inplace */
776 0, /* src_mask */
777 0xffff, /* dst_mask */
778 FALSE), /* pcrel_offset */
779
780 /* Marker relocs for TLS. */
781 HOWTO (R_PPC_TLS,
782 0, /* rightshift */
783 2, /* size (0 = byte, 1 = short, 2 = long) */
784 32, /* bitsize */
785 FALSE, /* pc_relative */
786 0, /* bitpos */
787 complain_overflow_dont, /* complain_on_overflow */
788 bfd_elf_generic_reloc, /* special_function */
789 "R_PPC_TLS", /* name */
790 FALSE, /* partial_inplace */
791 0, /* src_mask */
792 0, /* dst_mask */
793 FALSE), /* pcrel_offset */
794
795 HOWTO (R_PPC_TLSGD,
796 0, /* rightshift */
797 2, /* size (0 = byte, 1 = short, 2 = long) */
798 32, /* bitsize */
799 FALSE, /* pc_relative */
800 0, /* bitpos */
801 complain_overflow_dont, /* complain_on_overflow */
802 bfd_elf_generic_reloc, /* special_function */
803 "R_PPC_TLSGD", /* name */
804 FALSE, /* partial_inplace */
805 0, /* src_mask */
806 0, /* dst_mask */
807 FALSE), /* pcrel_offset */
808
809 HOWTO (R_PPC_TLSLD,
810 0, /* rightshift */
811 2, /* size (0 = byte, 1 = short, 2 = long) */
812 32, /* bitsize */
813 FALSE, /* pc_relative */
814 0, /* bitpos */
815 complain_overflow_dont, /* complain_on_overflow */
816 bfd_elf_generic_reloc, /* special_function */
817 "R_PPC_TLSLD", /* name */
818 FALSE, /* partial_inplace */
819 0, /* src_mask */
820 0, /* dst_mask */
821 FALSE), /* pcrel_offset */
822
823 /* Computes the load module index of the load module that contains the
824 definition of its TLS sym. */
825 HOWTO (R_PPC_DTPMOD32,
826 0, /* rightshift */
827 2, /* size (0 = byte, 1 = short, 2 = long) */
828 32, /* bitsize */
829 FALSE, /* pc_relative */
830 0, /* bitpos */
831 complain_overflow_dont, /* complain_on_overflow */
832 ppc_elf_unhandled_reloc, /* special_function */
833 "R_PPC_DTPMOD32", /* name */
834 FALSE, /* partial_inplace */
835 0, /* src_mask */
836 0xffffffff, /* dst_mask */
837 FALSE), /* pcrel_offset */
838
839 /* Computes a dtv-relative displacement, the difference between the value
840 of sym+add and the base address of the thread-local storage block that
841 contains the definition of sym, minus 0x8000. */
842 HOWTO (R_PPC_DTPREL32,
843 0, /* rightshift */
844 2, /* size (0 = byte, 1 = short, 2 = long) */
845 32, /* bitsize */
846 FALSE, /* pc_relative */
847 0, /* bitpos */
848 complain_overflow_dont, /* complain_on_overflow */
849 ppc_elf_unhandled_reloc, /* special_function */
850 "R_PPC_DTPREL32", /* name */
851 FALSE, /* partial_inplace */
852 0, /* src_mask */
853 0xffffffff, /* dst_mask */
854 FALSE), /* pcrel_offset */
855
856 /* A 16 bit dtprel reloc. */
857 HOWTO (R_PPC_DTPREL16,
858 0, /* rightshift */
859 1, /* size (0 = byte, 1 = short, 2 = long) */
860 16, /* bitsize */
861 FALSE, /* pc_relative */
862 0, /* bitpos */
863 complain_overflow_signed, /* complain_on_overflow */
864 ppc_elf_unhandled_reloc, /* special_function */
865 "R_PPC_DTPREL16", /* name */
866 FALSE, /* partial_inplace */
867 0, /* src_mask */
868 0xffff, /* dst_mask */
869 FALSE), /* pcrel_offset */
870
871 /* Like DTPREL16, but no overflow. */
872 HOWTO (R_PPC_DTPREL16_LO,
873 0, /* rightshift */
874 1, /* size (0 = byte, 1 = short, 2 = long) */
875 16, /* bitsize */
876 FALSE, /* pc_relative */
877 0, /* bitpos */
878 complain_overflow_dont, /* complain_on_overflow */
879 ppc_elf_unhandled_reloc, /* special_function */
880 "R_PPC_DTPREL16_LO", /* name */
881 FALSE, /* partial_inplace */
882 0, /* src_mask */
883 0xffff, /* dst_mask */
884 FALSE), /* pcrel_offset */
885
886 /* Like DTPREL16_LO, but next higher group of 16 bits. */
887 HOWTO (R_PPC_DTPREL16_HI,
888 16, /* rightshift */
889 1, /* size (0 = byte, 1 = short, 2 = long) */
890 16, /* bitsize */
891 FALSE, /* pc_relative */
892 0, /* bitpos */
893 complain_overflow_dont, /* complain_on_overflow */
894 ppc_elf_unhandled_reloc, /* special_function */
895 "R_PPC_DTPREL16_HI", /* name */
896 FALSE, /* partial_inplace */
897 0, /* src_mask */
898 0xffff, /* dst_mask */
899 FALSE), /* pcrel_offset */
900
901 /* Like DTPREL16_HI, but adjust for low 16 bits. */
902 HOWTO (R_PPC_DTPREL16_HA,
903 16, /* rightshift */
904 1, /* size (0 = byte, 1 = short, 2 = long) */
905 16, /* bitsize */
906 FALSE, /* pc_relative */
907 0, /* bitpos */
908 complain_overflow_dont, /* complain_on_overflow */
909 ppc_elf_unhandled_reloc, /* special_function */
910 "R_PPC_DTPREL16_HA", /* name */
911 FALSE, /* partial_inplace */
912 0, /* src_mask */
913 0xffff, /* dst_mask */
914 FALSE), /* pcrel_offset */
915
916 /* Computes a tp-relative displacement, the difference between the value of
917 sym+add and the value of the thread pointer (r13). */
918 HOWTO (R_PPC_TPREL32,
919 0, /* rightshift */
920 2, /* size (0 = byte, 1 = short, 2 = long) */
921 32, /* bitsize */
922 FALSE, /* pc_relative */
923 0, /* bitpos */
924 complain_overflow_dont, /* complain_on_overflow */
925 ppc_elf_unhandled_reloc, /* special_function */
926 "R_PPC_TPREL32", /* name */
927 FALSE, /* partial_inplace */
928 0, /* src_mask */
929 0xffffffff, /* dst_mask */
930 FALSE), /* pcrel_offset */
931
932 /* A 16 bit tprel reloc. */
933 HOWTO (R_PPC_TPREL16,
934 0, /* rightshift */
935 1, /* size (0 = byte, 1 = short, 2 = long) */
936 16, /* bitsize */
937 FALSE, /* pc_relative */
938 0, /* bitpos */
939 complain_overflow_signed, /* complain_on_overflow */
940 ppc_elf_unhandled_reloc, /* special_function */
941 "R_PPC_TPREL16", /* name */
942 FALSE, /* partial_inplace */
943 0, /* src_mask */
944 0xffff, /* dst_mask */
945 FALSE), /* pcrel_offset */
946
947 /* Like TPREL16, but no overflow. */
948 HOWTO (R_PPC_TPREL16_LO,
949 0, /* rightshift */
950 1, /* size (0 = byte, 1 = short, 2 = long) */
951 16, /* bitsize */
952 FALSE, /* pc_relative */
953 0, /* bitpos */
954 complain_overflow_dont, /* complain_on_overflow */
955 ppc_elf_unhandled_reloc, /* special_function */
956 "R_PPC_TPREL16_LO", /* name */
957 FALSE, /* partial_inplace */
958 0, /* src_mask */
959 0xffff, /* dst_mask */
960 FALSE), /* pcrel_offset */
961
962 /* Like TPREL16_LO, but next higher group of 16 bits. */
963 HOWTO (R_PPC_TPREL16_HI,
964 16, /* rightshift */
965 1, /* size (0 = byte, 1 = short, 2 = long) */
966 16, /* bitsize */
967 FALSE, /* pc_relative */
968 0, /* bitpos */
969 complain_overflow_dont, /* complain_on_overflow */
970 ppc_elf_unhandled_reloc, /* special_function */
971 "R_PPC_TPREL16_HI", /* name */
972 FALSE, /* partial_inplace */
973 0, /* src_mask */
974 0xffff, /* dst_mask */
975 FALSE), /* pcrel_offset */
976
977 /* Like TPREL16_HI, but adjust for low 16 bits. */
978 HOWTO (R_PPC_TPREL16_HA,
979 16, /* rightshift */
980 1, /* size (0 = byte, 1 = short, 2 = long) */
981 16, /* bitsize */
982 FALSE, /* pc_relative */
983 0, /* bitpos */
984 complain_overflow_dont, /* complain_on_overflow */
985 ppc_elf_unhandled_reloc, /* special_function */
986 "R_PPC_TPREL16_HA", /* name */
987 FALSE, /* partial_inplace */
988 0, /* src_mask */
989 0xffff, /* dst_mask */
990 FALSE), /* pcrel_offset */
991
992 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
993 with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
994 to the first entry. */
995 HOWTO (R_PPC_GOT_TLSGD16,
996 0, /* rightshift */
997 1, /* size (0 = byte, 1 = short, 2 = long) */
998 16, /* bitsize */
999 FALSE, /* pc_relative */
1000 0, /* bitpos */
1001 complain_overflow_signed, /* complain_on_overflow */
1002 ppc_elf_unhandled_reloc, /* special_function */
1003 "R_PPC_GOT_TLSGD16", /* name */
1004 FALSE, /* partial_inplace */
1005 0, /* src_mask */
1006 0xffff, /* dst_mask */
1007 FALSE), /* pcrel_offset */
1008
1009 /* Like GOT_TLSGD16, but no overflow. */
1010 HOWTO (R_PPC_GOT_TLSGD16_LO,
1011 0, /* rightshift */
1012 1, /* size (0 = byte, 1 = short, 2 = long) */
1013 16, /* bitsize */
1014 FALSE, /* pc_relative */
1015 0, /* bitpos */
1016 complain_overflow_dont, /* complain_on_overflow */
1017 ppc_elf_unhandled_reloc, /* special_function */
1018 "R_PPC_GOT_TLSGD16_LO", /* name */
1019 FALSE, /* partial_inplace */
1020 0, /* src_mask */
1021 0xffff, /* dst_mask */
1022 FALSE), /* pcrel_offset */
1023
1024 /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
1025 HOWTO (R_PPC_GOT_TLSGD16_HI,
1026 16, /* rightshift */
1027 1, /* size (0 = byte, 1 = short, 2 = long) */
1028 16, /* bitsize */
1029 FALSE, /* pc_relative */
1030 0, /* bitpos */
1031 complain_overflow_dont, /* complain_on_overflow */
1032 ppc_elf_unhandled_reloc, /* special_function */
1033 "R_PPC_GOT_TLSGD16_HI", /* name */
1034 FALSE, /* partial_inplace */
1035 0, /* src_mask */
1036 0xffff, /* dst_mask */
1037 FALSE), /* pcrel_offset */
1038
1039 /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
1040 HOWTO (R_PPC_GOT_TLSGD16_HA,
1041 16, /* rightshift */
1042 1, /* size (0 = byte, 1 = short, 2 = long) */
1043 16, /* bitsize */
1044 FALSE, /* pc_relative */
1045 0, /* bitpos */
1046 complain_overflow_dont, /* complain_on_overflow */
1047 ppc_elf_unhandled_reloc, /* special_function */
1048 "R_PPC_GOT_TLSGD16_HA", /* name */
1049 FALSE, /* partial_inplace */
1050 0, /* src_mask */
1051 0xffff, /* dst_mask */
1052 FALSE), /* pcrel_offset */
1053
1054 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1055 with values (sym+add)@dtpmod and zero, and computes the offset to the
1056 first entry. */
1057 HOWTO (R_PPC_GOT_TLSLD16,
1058 0, /* rightshift */
1059 1, /* size (0 = byte, 1 = short, 2 = long) */
1060 16, /* bitsize */
1061 FALSE, /* pc_relative */
1062 0, /* bitpos */
1063 complain_overflow_signed, /* complain_on_overflow */
1064 ppc_elf_unhandled_reloc, /* special_function */
1065 "R_PPC_GOT_TLSLD16", /* name */
1066 FALSE, /* partial_inplace */
1067 0, /* src_mask */
1068 0xffff, /* dst_mask */
1069 FALSE), /* pcrel_offset */
1070
1071 /* Like GOT_TLSLD16, but no overflow. */
1072 HOWTO (R_PPC_GOT_TLSLD16_LO,
1073 0, /* rightshift */
1074 1, /* size (0 = byte, 1 = short, 2 = long) */
1075 16, /* bitsize */
1076 FALSE, /* pc_relative */
1077 0, /* bitpos */
1078 complain_overflow_dont, /* complain_on_overflow */
1079 ppc_elf_unhandled_reloc, /* special_function */
1080 "R_PPC_GOT_TLSLD16_LO", /* name */
1081 FALSE, /* partial_inplace */
1082 0, /* src_mask */
1083 0xffff, /* dst_mask */
1084 FALSE), /* pcrel_offset */
1085
1086 /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
1087 HOWTO (R_PPC_GOT_TLSLD16_HI,
1088 16, /* rightshift */
1089 1, /* size (0 = byte, 1 = short, 2 = long) */
1090 16, /* bitsize */
1091 FALSE, /* pc_relative */
1092 0, /* bitpos */
1093 complain_overflow_dont, /* complain_on_overflow */
1094 ppc_elf_unhandled_reloc, /* special_function */
1095 "R_PPC_GOT_TLSLD16_HI", /* name */
1096 FALSE, /* partial_inplace */
1097 0, /* src_mask */
1098 0xffff, /* dst_mask */
1099 FALSE), /* pcrel_offset */
1100
1101 /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
1102 HOWTO (R_PPC_GOT_TLSLD16_HA,
1103 16, /* rightshift */
1104 1, /* size (0 = byte, 1 = short, 2 = long) */
1105 16, /* bitsize */
1106 FALSE, /* pc_relative */
1107 0, /* bitpos */
1108 complain_overflow_dont, /* complain_on_overflow */
1109 ppc_elf_unhandled_reloc, /* special_function */
1110 "R_PPC_GOT_TLSLD16_HA", /* name */
1111 FALSE, /* partial_inplace */
1112 0, /* src_mask */
1113 0xffff, /* dst_mask */
1114 FALSE), /* pcrel_offset */
1115
1116 /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
1117 the offset to the entry. */
1118 HOWTO (R_PPC_GOT_DTPREL16,
1119 0, /* rightshift */
1120 1, /* size (0 = byte, 1 = short, 2 = long) */
1121 16, /* bitsize */
1122 FALSE, /* pc_relative */
1123 0, /* bitpos */
1124 complain_overflow_signed, /* complain_on_overflow */
1125 ppc_elf_unhandled_reloc, /* special_function */
1126 "R_PPC_GOT_DTPREL16", /* name */
1127 FALSE, /* partial_inplace */
1128 0, /* src_mask */
1129 0xffff, /* dst_mask */
1130 FALSE), /* pcrel_offset */
1131
1132 /* Like GOT_DTPREL16, but no overflow. */
1133 HOWTO (R_PPC_GOT_DTPREL16_LO,
1134 0, /* rightshift */
1135 1, /* size (0 = byte, 1 = short, 2 = long) */
1136 16, /* bitsize */
1137 FALSE, /* pc_relative */
1138 0, /* bitpos */
1139 complain_overflow_dont, /* complain_on_overflow */
1140 ppc_elf_unhandled_reloc, /* special_function */
1141 "R_PPC_GOT_DTPREL16_LO", /* name */
1142 FALSE, /* partial_inplace */
1143 0, /* src_mask */
1144 0xffff, /* dst_mask */
1145 FALSE), /* pcrel_offset */
1146
1147 /* Like GOT_DTPREL16_LO, but next higher group of 16 bits. */
1148 HOWTO (R_PPC_GOT_DTPREL16_HI,
1149 16, /* rightshift */
1150 1, /* size (0 = byte, 1 = short, 2 = long) */
1151 16, /* bitsize */
1152 FALSE, /* pc_relative */
1153 0, /* bitpos */
1154 complain_overflow_dont, /* complain_on_overflow */
1155 ppc_elf_unhandled_reloc, /* special_function */
1156 "R_PPC_GOT_DTPREL16_HI", /* name */
1157 FALSE, /* partial_inplace */
1158 0, /* src_mask */
1159 0xffff, /* dst_mask */
1160 FALSE), /* pcrel_offset */
1161
1162 /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
1163 HOWTO (R_PPC_GOT_DTPREL16_HA,
1164 16, /* rightshift */
1165 1, /* size (0 = byte, 1 = short, 2 = long) */
1166 16, /* bitsize */
1167 FALSE, /* pc_relative */
1168 0, /* bitpos */
1169 complain_overflow_dont, /* complain_on_overflow */
1170 ppc_elf_unhandled_reloc, /* special_function */
1171 "R_PPC_GOT_DTPREL16_HA", /* name */
1172 FALSE, /* partial_inplace */
1173 0, /* src_mask */
1174 0xffff, /* dst_mask */
1175 FALSE), /* pcrel_offset */
1176
1177 /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
1178 offset to the entry. */
1179 HOWTO (R_PPC_GOT_TPREL16,
1180 0, /* rightshift */
1181 1, /* size (0 = byte, 1 = short, 2 = long) */
1182 16, /* bitsize */
1183 FALSE, /* pc_relative */
1184 0, /* bitpos */
1185 complain_overflow_signed, /* complain_on_overflow */
1186 ppc_elf_unhandled_reloc, /* special_function */
1187 "R_PPC_GOT_TPREL16", /* name */
1188 FALSE, /* partial_inplace */
1189 0, /* src_mask */
1190 0xffff, /* dst_mask */
1191 FALSE), /* pcrel_offset */
1192
1193 /* Like GOT_TPREL16, but no overflow. */
1194 HOWTO (R_PPC_GOT_TPREL16_LO,
1195 0, /* rightshift */
1196 1, /* size (0 = byte, 1 = short, 2 = long) */
1197 16, /* bitsize */
1198 FALSE, /* pc_relative */
1199 0, /* bitpos */
1200 complain_overflow_dont, /* complain_on_overflow */
1201 ppc_elf_unhandled_reloc, /* special_function */
1202 "R_PPC_GOT_TPREL16_LO", /* name */
1203 FALSE, /* partial_inplace */
1204 0, /* src_mask */
1205 0xffff, /* dst_mask */
1206 FALSE), /* pcrel_offset */
1207
1208 /* Like GOT_TPREL16_LO, but next higher group of 16 bits. */
1209 HOWTO (R_PPC_GOT_TPREL16_HI,
1210 16, /* rightshift */
1211 1, /* size (0 = byte, 1 = short, 2 = long) */
1212 16, /* bitsize */
1213 FALSE, /* pc_relative */
1214 0, /* bitpos */
1215 complain_overflow_dont, /* complain_on_overflow */
1216 ppc_elf_unhandled_reloc, /* special_function */
1217 "R_PPC_GOT_TPREL16_HI", /* name */
1218 FALSE, /* partial_inplace */
1219 0, /* src_mask */
1220 0xffff, /* dst_mask */
1221 FALSE), /* pcrel_offset */
1222
1223 /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
1224 HOWTO (R_PPC_GOT_TPREL16_HA,
1225 16, /* rightshift */
1226 1, /* size (0 = byte, 1 = short, 2 = long) */
1227 16, /* bitsize */
1228 FALSE, /* pc_relative */
1229 0, /* bitpos */
1230 complain_overflow_dont, /* complain_on_overflow */
1231 ppc_elf_unhandled_reloc, /* special_function */
1232 "R_PPC_GOT_TPREL16_HA", /* name */
1233 FALSE, /* partial_inplace */
1234 0, /* src_mask */
1235 0xffff, /* dst_mask */
1236 FALSE), /* pcrel_offset */
1237
1238 /* The remaining relocs are from the Embedded ELF ABI, and are not
1239 in the SVR4 ELF ABI. */
1240
1241 /* 32 bit value resulting from the addend minus the symbol. */
1242 HOWTO (R_PPC_EMB_NADDR32, /* type */
1243 0, /* rightshift */
1244 2, /* size (0 = byte, 1 = short, 2 = long) */
1245 32, /* bitsize */
1246 FALSE, /* pc_relative */
1247 0, /* bitpos */
1248 complain_overflow_dont, /* complain_on_overflow */
1249 ppc_elf_unhandled_reloc, /* special_function */
1250 "R_PPC_EMB_NADDR32", /* name */
1251 FALSE, /* partial_inplace */
1252 0, /* src_mask */
1253 0xffffffff, /* dst_mask */
1254 FALSE), /* pcrel_offset */
1255
1256 /* 16 bit value resulting from the addend minus the symbol. */
1257 HOWTO (R_PPC_EMB_NADDR16, /* type */
1258 0, /* rightshift */
1259 1, /* size (0 = byte, 1 = short, 2 = long) */
1260 16, /* bitsize */
1261 FALSE, /* pc_relative */
1262 0, /* bitpos */
1263 complain_overflow_signed, /* complain_on_overflow */
1264 ppc_elf_unhandled_reloc, /* special_function */
1265 "R_PPC_EMB_NADDR16", /* name */
1266 FALSE, /* partial_inplace */
1267 0, /* src_mask */
1268 0xffff, /* dst_mask */
1269 FALSE), /* pcrel_offset */
1270
1271 /* 16 bit value resulting from the addend minus the symbol. */
1272 HOWTO (R_PPC_EMB_NADDR16_LO, /* type */
1273 0, /* rightshift */
1274 1, /* size (0 = byte, 1 = short, 2 = long) */
1275 16, /* bitsize */
1276 FALSE, /* pc_relative */
1277 0, /* bitpos */
1278 complain_overflow_dont,/* complain_on_overflow */
1279 ppc_elf_unhandled_reloc, /* special_function */
1280 "R_PPC_EMB_ADDR16_LO", /* name */
1281 FALSE, /* partial_inplace */
1282 0, /* src_mask */
1283 0xffff, /* dst_mask */
1284 FALSE), /* pcrel_offset */
1285
1286 /* The high order 16 bits of the addend minus the symbol. */
1287 HOWTO (R_PPC_EMB_NADDR16_HI, /* type */
1288 16, /* rightshift */
1289 1, /* size (0 = byte, 1 = short, 2 = long) */
1290 16, /* bitsize */
1291 FALSE, /* pc_relative */
1292 0, /* bitpos */
1293 complain_overflow_dont, /* complain_on_overflow */
1294 ppc_elf_unhandled_reloc, /* special_function */
1295 "R_PPC_EMB_NADDR16_HI", /* name */
1296 FALSE, /* partial_inplace */
1297 0, /* src_mask */
1298 0xffff, /* dst_mask */
1299 FALSE), /* pcrel_offset */
1300
1301 /* The high order 16 bits of the result of the addend minus the address,
1302 plus 1 if the contents of the low 16 bits, treated as a signed number,
1303 is negative. */
1304 HOWTO (R_PPC_EMB_NADDR16_HA, /* type */
1305 16, /* rightshift */
1306 1, /* size (0 = byte, 1 = short, 2 = long) */
1307 16, /* bitsize */
1308 FALSE, /* pc_relative */
1309 0, /* bitpos */
1310 complain_overflow_dont, /* complain_on_overflow */
1311 ppc_elf_unhandled_reloc, /* special_function */
1312 "R_PPC_EMB_NADDR16_HA", /* name */
1313 FALSE, /* partial_inplace */
1314 0, /* src_mask */
1315 0xffff, /* dst_mask */
1316 FALSE), /* pcrel_offset */
1317
1318 /* 16 bit value resulting from allocating a 4 byte word to hold an
1319 address in the .sdata section, and returning the offset from
1320 _SDA_BASE_ for that relocation. */
1321 HOWTO (R_PPC_EMB_SDAI16, /* type */
1322 0, /* rightshift */
1323 1, /* size (0 = byte, 1 = short, 2 = long) */
1324 16, /* bitsize */
1325 FALSE, /* pc_relative */
1326 0, /* bitpos */
1327 complain_overflow_signed, /* complain_on_overflow */
1328 ppc_elf_unhandled_reloc, /* special_function */
1329 "R_PPC_EMB_SDAI16", /* name */
1330 FALSE, /* partial_inplace */
1331 0, /* src_mask */
1332 0xffff, /* dst_mask */
1333 FALSE), /* pcrel_offset */
1334
1335 /* 16 bit value resulting from allocating a 4 byte word to hold an
1336 address in the .sdata2 section, and returning the offset from
1337 _SDA2_BASE_ for that relocation. */
1338 HOWTO (R_PPC_EMB_SDA2I16, /* type */
1339 0, /* rightshift */
1340 1, /* size (0 = byte, 1 = short, 2 = long) */
1341 16, /* bitsize */
1342 FALSE, /* pc_relative */
1343 0, /* bitpos */
1344 complain_overflow_signed, /* complain_on_overflow */
1345 ppc_elf_unhandled_reloc, /* special_function */
1346 "R_PPC_EMB_SDA2I16", /* name */
1347 FALSE, /* partial_inplace */
1348 0, /* src_mask */
1349 0xffff, /* dst_mask */
1350 FALSE), /* pcrel_offset */
1351
1352 /* A sign-extended 16 bit value relative to _SDA2_BASE_, for use with
1353 small data items. */
1354 HOWTO (R_PPC_EMB_SDA2REL, /* type */
1355 0, /* rightshift */
1356 1, /* size (0 = byte, 1 = short, 2 = long) */
1357 16, /* bitsize */
1358 FALSE, /* pc_relative */
1359 0, /* bitpos */
1360 complain_overflow_signed, /* complain_on_overflow */
1361 ppc_elf_unhandled_reloc, /* special_function */
1362 "R_PPC_EMB_SDA2REL", /* name */
1363 FALSE, /* partial_inplace */
1364 0, /* src_mask */
1365 0xffff, /* dst_mask */
1366 FALSE), /* pcrel_offset */
1367
1368 /* Relocate against either _SDA_BASE_ or _SDA2_BASE_, filling in the 16 bit
1369 signed offset from the appropriate base, and filling in the register
1370 field with the appropriate register (0, 2, or 13). */
1371 HOWTO (R_PPC_EMB_SDA21, /* type */
1372 0, /* rightshift */
1373 2, /* size (0 = byte, 1 = short, 2 = long) */
1374 16, /* bitsize */
1375 FALSE, /* pc_relative */
1376 0, /* bitpos */
1377 complain_overflow_signed, /* complain_on_overflow */
1378 ppc_elf_unhandled_reloc, /* special_function */
1379 "R_PPC_EMB_SDA21", /* name */
1380 FALSE, /* partial_inplace */
1381 0, /* src_mask */
1382 0xffff, /* dst_mask */
1383 FALSE), /* pcrel_offset */
1384
1385 /* Relocation not handled: R_PPC_EMB_MRKREF */
1386 /* Relocation not handled: R_PPC_EMB_RELSEC16 */
1387 /* Relocation not handled: R_PPC_EMB_RELST_LO */
1388 /* Relocation not handled: R_PPC_EMB_RELST_HI */
1389 /* Relocation not handled: R_PPC_EMB_RELST_HA */
1390 /* Relocation not handled: R_PPC_EMB_BIT_FLD */
1391
1392 /* PC relative relocation against either _SDA_BASE_ or _SDA2_BASE_, filling
1393 in the 16 bit signed offset from the appropriate base, and filling in the
1394 register field with the appropriate register (0, 2, or 13). */
1395 HOWTO (R_PPC_EMB_RELSDA, /* type */
1396 0, /* rightshift */
1397 1, /* size (0 = byte, 1 = short, 2 = long) */
1398 16, /* bitsize */
1399 FALSE, /* pc_relative */
1400 0, /* bitpos */
1401 complain_overflow_signed, /* complain_on_overflow */
1402 ppc_elf_unhandled_reloc, /* special_function */
1403 "R_PPC_EMB_RELSDA", /* name */
1404 FALSE, /* partial_inplace */
1405 0, /* src_mask */
1406 0xffff, /* dst_mask */
1407 FALSE), /* pcrel_offset */
1408
1409 /* A relative 8 bit branch. */
1410 HOWTO (R_PPC_VLE_REL8, /* type */
1411 1, /* rightshift */
1412 1, /* size (0 = byte, 1 = short, 2 = long) */
1413 8, /* bitsize */
1414 TRUE, /* pc_relative */
1415 0, /* bitpos */
1416 complain_overflow_signed, /* complain_on_overflow */
1417 bfd_elf_generic_reloc, /* special_function */
1418 "R_PPC_VLE_REL8", /* name */
1419 FALSE, /* partial_inplace */
1420 0, /* src_mask */
1421 0xff, /* dst_mask */
1422 TRUE), /* pcrel_offset */
1423
1424 /* A relative 15 bit branch. */
1425 HOWTO (R_PPC_VLE_REL15, /* type */
1426 1, /* rightshift */
1427 2, /* size (0 = byte, 1 = short, 2 = long) */
1428 15, /* bitsize */
1429 TRUE, /* pc_relative */
1430 1, /* bitpos */
1431 complain_overflow_signed, /* complain_on_overflow */
1432 bfd_elf_generic_reloc, /* special_function */
1433 "R_PPC_VLE_REL15", /* name */
1434 FALSE, /* partial_inplace */
1435 0, /* src_mask */
1436 0xfffe, /* dst_mask */
1437 TRUE), /* pcrel_offset */
1438
1439 /* A relative 24 bit branch. */
1440 HOWTO (R_PPC_VLE_REL24, /* type */
1441 1, /* rightshift */
1442 2, /* size (0 = byte, 1 = short, 2 = long) */
1443 24, /* bitsize */
1444 TRUE, /* pc_relative */
1445 1, /* bitpos */
1446 complain_overflow_signed, /* complain_on_overflow */
1447 bfd_elf_generic_reloc, /* special_function */
1448 "R_PPC_VLE_REL24", /* name */
1449 FALSE, /* partial_inplace */
1450 0, /* src_mask */
1451 0x1fffffe, /* dst_mask */
1452 TRUE), /* pcrel_offset */
1453
1454 /* The 16 LSBS in split16a format. */
1455 HOWTO (R_PPC_VLE_LO16A, /* type */
1456 0, /* rightshift */
1457 2, /* size (0 = byte, 1 = short, 2 = long) */
1458 16, /* bitsize */
1459 FALSE, /* pc_relative */
1460 0, /* bitpos */
1461 complain_overflow_dont, /* complain_on_overflow */
1462 ppc_elf_unhandled_reloc, /* special_function */
1463 "R_PPC_VLE_LO16A", /* name */
1464 FALSE, /* partial_inplace */
1465 0, /* src_mask */
1466 0x1f07ff, /* dst_mask */
1467 FALSE), /* pcrel_offset */
1468
1469 /* The 16 LSBS in split16d format. */
1470 HOWTO (R_PPC_VLE_LO16D, /* type */
1471 0, /* rightshift */
1472 2, /* size (0 = byte, 1 = short, 2 = long) */
1473 16, /* bitsize */
1474 FALSE, /* pc_relative */
1475 0, /* bitpos */
1476 complain_overflow_dont, /* complain_on_overflow */
1477 ppc_elf_unhandled_reloc, /* special_function */
1478 "R_PPC_VLE_LO16D", /* name */
1479 FALSE, /* partial_inplace */
1480 0, /* src_mask */
1481 0x3e007ff, /* dst_mask */
1482 FALSE), /* pcrel_offset */
1483
1484 /* Bits 16-31 split16a format. */
1485 HOWTO (R_PPC_VLE_HI16A, /* type */
1486 16, /* rightshift */
1487 2, /* size (0 = byte, 1 = short, 2 = long) */
1488 16, /* bitsize */
1489 FALSE, /* pc_relative */
1490 0, /* bitpos */
1491 complain_overflow_dont, /* complain_on_overflow */
1492 ppc_elf_unhandled_reloc, /* special_function */
1493 "R_PPC_VLE_HI16A", /* name */
1494 FALSE, /* partial_inplace */
1495 0, /* src_mask */
1496 0x1f07ff, /* dst_mask */
1497 FALSE), /* pcrel_offset */
1498
1499 /* Bits 16-31 split16d format. */
1500 HOWTO (R_PPC_VLE_HI16D, /* type */
1501 16, /* rightshift */
1502 2, /* size (0 = byte, 1 = short, 2 = long) */
1503 16, /* bitsize */
1504 FALSE, /* pc_relative */
1505 0, /* bitpos */
1506 complain_overflow_dont, /* complain_on_overflow */
1507 ppc_elf_unhandled_reloc, /* special_function */
1508 "R_PPC_VLE_HI16D", /* name */
1509 FALSE, /* partial_inplace */
1510 0, /* src_mask */
1511 0x3e007ff, /* dst_mask */
1512 FALSE), /* pcrel_offset */
1513
1514 /* Bits 16-31 (High Adjusted) in split16a format. */
1515 HOWTO (R_PPC_VLE_HA16A, /* type */
1516 16, /* rightshift */
1517 2, /* size (0 = byte, 1 = short, 2 = long) */
1518 16, /* bitsize */
1519 FALSE, /* pc_relative */
1520 0, /* bitpos */
1521 complain_overflow_dont, /* complain_on_overflow */
1522 ppc_elf_unhandled_reloc, /* special_function */
1523 "R_PPC_VLE_HA16A", /* name */
1524 FALSE, /* partial_inplace */
1525 0, /* src_mask */
1526 0x1f07ff, /* dst_mask */
1527 FALSE), /* pcrel_offset */
1528
1529 /* Bits 16-31 (High Adjusted) in split16d format. */
1530 HOWTO (R_PPC_VLE_HA16D, /* type */
1531 16, /* rightshift */
1532 2, /* size (0 = byte, 1 = short, 2 = long) */
1533 16, /* bitsize */
1534 FALSE, /* pc_relative */
1535 0, /* bitpos */
1536 complain_overflow_dont, /* complain_on_overflow */
1537 ppc_elf_unhandled_reloc, /* special_function */
1538 "R_PPC_VLE_HA16D", /* name */
1539 FALSE, /* partial_inplace */
1540 0, /* src_mask */
1541 0x3e007ff, /* dst_mask */
1542 FALSE), /* pcrel_offset */
1543
1544 /* This reloc is like R_PPC_EMB_SDA21 but only applies to e_add16i
1545 instructions. If the register base is 0 then the linker changes
1546 the e_add16i to an e_li instruction. */
1547 HOWTO (R_PPC_VLE_SDA21, /* type */
1548 0, /* rightshift */
1549 2, /* size (0 = byte, 1 = short, 2 = long) */
1550 16, /* bitsize */
1551 FALSE, /* pc_relative */
1552 0, /* bitpos */
1553 complain_overflow_signed, /* complain_on_overflow */
1554 ppc_elf_unhandled_reloc, /* special_function */
1555 "R_PPC_VLE_SDA21", /* name */
1556 FALSE, /* partial_inplace */
1557 0, /* src_mask */
1558 0xffff, /* dst_mask */
1559 FALSE), /* pcrel_offset */
1560
1561 /* Like R_PPC_VLE_SDA21 but ignore overflow. */
1562 HOWTO (R_PPC_VLE_SDA21_LO, /* type */
1563 0, /* rightshift */
1564 2, /* size (0 = byte, 1 = short, 2 = long) */
1565 16, /* bitsize */
1566 FALSE, /* pc_relative */
1567 0, /* bitpos */
1568 complain_overflow_dont, /* complain_on_overflow */
1569 ppc_elf_unhandled_reloc, /* special_function */
1570 "R_PPC_VLE_SDA21_LO", /* name */
1571 FALSE, /* partial_inplace */
1572 0, /* src_mask */
1573 0xffff, /* dst_mask */
1574 FALSE), /* pcrel_offset */
1575
1576 /* The 16 LSBS relative to _SDA_BASE_ in split16a format. */
1577 HOWTO (R_PPC_VLE_SDAREL_LO16A,/* type */
1578 0, /* rightshift */
1579 2, /* size (0 = byte, 1 = short, 2 = long) */
1580 16, /* bitsize */
1581 FALSE, /* pc_relative */
1582 0, /* bitpos */
1583 complain_overflow_dont, /* complain_on_overflow */
1584 ppc_elf_unhandled_reloc, /* special_function */
1585 "R_PPC_VLE_SDAREL_LO16A", /* name */
1586 FALSE, /* partial_inplace */
1587 0, /* src_mask */
1588 0x1f07ff, /* dst_mask */
1589 FALSE), /* pcrel_offset */
1590
1591 /* The 16 LSBS relative to _SDA_BASE_ in split16d format. */
1592 HOWTO (R_PPC_VLE_SDAREL_LO16D, /* type */
1593 0, /* rightshift */
1594 2, /* size (0 = byte, 1 = short, 2 = long) */
1595 16, /* bitsize */
1596 FALSE, /* pc_relative */
1597 0, /* bitpos */
1598 complain_overflow_dont, /* complain_on_overflow */
1599 ppc_elf_unhandled_reloc, /* special_function */
1600 "R_PPC_VLE_SDAREL_LO16D", /* name */
1601 FALSE, /* partial_inplace */
1602 0, /* src_mask */
1603 0x3e007ff, /* dst_mask */
1604 FALSE), /* pcrel_offset */
1605
1606 /* Bits 16-31 relative to _SDA_BASE_ in split16a format. */
1607 HOWTO (R_PPC_VLE_SDAREL_HI16A, /* type */
1608 16, /* rightshift */
1609 2, /* size (0 = byte, 1 = short, 2 = long) */
1610 16, /* bitsize */
1611 FALSE, /* pc_relative */
1612 0, /* bitpos */
1613 complain_overflow_dont, /* complain_on_overflow */
1614 ppc_elf_unhandled_reloc, /* special_function */
1615 "R_PPC_VLE_SDAREL_HI16A", /* name */
1616 FALSE, /* partial_inplace */
1617 0, /* src_mask */
1618 0x1f07ff, /* dst_mask */
1619 FALSE), /* pcrel_offset */
1620
1621 /* Bits 16-31 relative to _SDA_BASE_ in split16d format. */
1622 HOWTO (R_PPC_VLE_SDAREL_HI16D, /* type */
1623 16, /* rightshift */
1624 2, /* size (0 = byte, 1 = short, 2 = long) */
1625 16, /* bitsize */
1626 FALSE, /* pc_relative */
1627 0, /* bitpos */
1628 complain_overflow_dont, /* complain_on_overflow */
1629 ppc_elf_unhandled_reloc, /* special_function */
1630 "R_PPC_VLE_SDAREL_HI16D", /* name */
1631 FALSE, /* partial_inplace */
1632 0, /* src_mask */
1633 0x3e007ff, /* dst_mask */
1634 FALSE), /* pcrel_offset */
1635
1636 /* Bits 16-31 (HA) relative to _SDA_BASE split16a format. */
1637 HOWTO (R_PPC_VLE_SDAREL_HA16A, /* type */
1638 16, /* rightshift */
1639 2, /* size (0 = byte, 1 = short, 2 = long) */
1640 16, /* bitsize */
1641 FALSE, /* pc_relative */
1642 0, /* bitpos */
1643 complain_overflow_dont, /* complain_on_overflow */
1644 ppc_elf_unhandled_reloc, /* special_function */
1645 "R_PPC_VLE_SDAREL_HA16A", /* name */
1646 FALSE, /* partial_inplace */
1647 0, /* src_mask */
1648 0x1f07ff, /* dst_mask */
1649 FALSE), /* pcrel_offset */
1650
1651 /* Bits 16-31 (HA) relative to _SDA_BASE split16d format. */
1652 HOWTO (R_PPC_VLE_SDAREL_HA16D, /* type */
1653 16, /* rightshift */
1654 2, /* size (0 = byte, 1 = short, 2 = long) */
1655 16, /* bitsize */
1656 FALSE, /* pc_relative */
1657 0, /* bitpos */
1658 complain_overflow_dont, /* complain_on_overflow */
1659 ppc_elf_unhandled_reloc, /* special_function */
1660 "R_PPC_VLE_SDAREL_HA16D", /* name */
1661 FALSE, /* partial_inplace */
1662 0, /* src_mask */
1663 0x3e007ff, /* dst_mask */
1664 FALSE), /* pcrel_offset */
1665
1666 /* e_li split20 format. */
1667 HOWTO (R_PPC_VLE_ADDR20, /* type */
1668 16, /* rightshift */
1669 2, /* size (0 = byte, 1 = short, 2 = long) */
1670 20, /* bitsize */
1671 FALSE, /* pc_relative */
1672 0, /* bitpos */
1673 complain_overflow_dont, /* complain_on_overflow */
1674 bfd_elf_generic_reloc, /* special_function */
1675 "R_PPC_VLE_ADDR20", /* name */
1676 FALSE, /* partial_inplace */
1677 0, /* src_mask */
1678 0x1f07ff, /* dst_mask */
1679 FALSE), /* pcrel_offset */
1680
1681 HOWTO (R_PPC_IRELATIVE, /* type */
1682 0, /* rightshift */
1683 2, /* size (0 = byte, 1 = short, 2 = long) */
1684 32, /* bitsize */
1685 FALSE, /* pc_relative */
1686 0, /* bitpos */
1687 complain_overflow_dont, /* complain_on_overflow */
1688 ppc_elf_unhandled_reloc, /* special_function */
1689 "R_PPC_IRELATIVE", /* name */
1690 FALSE, /* partial_inplace */
1691 0, /* src_mask */
1692 0xffffffff, /* dst_mask */
1693 FALSE), /* pcrel_offset */
1694
1695 /* A 16 bit relative relocation. */
1696 HOWTO (R_PPC_REL16, /* type */
1697 0, /* rightshift */
1698 1, /* size (0 = byte, 1 = short, 2 = long) */
1699 16, /* bitsize */
1700 TRUE, /* pc_relative */
1701 0, /* bitpos */
1702 complain_overflow_signed, /* complain_on_overflow */
1703 bfd_elf_generic_reloc, /* special_function */
1704 "R_PPC_REL16", /* name */
1705 FALSE, /* partial_inplace */
1706 0, /* src_mask */
1707 0xffff, /* dst_mask */
1708 TRUE), /* pcrel_offset */
1709
1710 /* A 16 bit relative relocation without overflow. */
1711 HOWTO (R_PPC_REL16_LO, /* type */
1712 0, /* rightshift */
1713 1, /* size (0 = byte, 1 = short, 2 = long) */
1714 16, /* bitsize */
1715 TRUE, /* pc_relative */
1716 0, /* bitpos */
1717 complain_overflow_dont,/* complain_on_overflow */
1718 bfd_elf_generic_reloc, /* special_function */
1719 "R_PPC_REL16_LO", /* name */
1720 FALSE, /* partial_inplace */
1721 0, /* src_mask */
1722 0xffff, /* dst_mask */
1723 TRUE), /* pcrel_offset */
1724
1725 /* The high order 16 bits of a relative address. */
1726 HOWTO (R_PPC_REL16_HI, /* type */
1727 16, /* rightshift */
1728 1, /* size (0 = byte, 1 = short, 2 = long) */
1729 16, /* bitsize */
1730 TRUE, /* pc_relative */
1731 0, /* bitpos */
1732 complain_overflow_dont, /* complain_on_overflow */
1733 bfd_elf_generic_reloc, /* special_function */
1734 "R_PPC_REL16_HI", /* name */
1735 FALSE, /* partial_inplace */
1736 0, /* src_mask */
1737 0xffff, /* dst_mask */
1738 TRUE), /* pcrel_offset */
1739
1740 /* The high order 16 bits of a relative address, plus 1 if the contents of
1741 the low 16 bits, treated as a signed number, is negative. */
1742 HOWTO (R_PPC_REL16_HA, /* type */
1743 16, /* rightshift */
1744 1, /* size (0 = byte, 1 = short, 2 = long) */
1745 16, /* bitsize */
1746 TRUE, /* pc_relative */
1747 0, /* bitpos */
1748 complain_overflow_dont, /* complain_on_overflow */
1749 ppc_elf_addr16_ha_reloc, /* special_function */
1750 "R_PPC_REL16_HA", /* name */
1751 FALSE, /* partial_inplace */
1752 0, /* src_mask */
1753 0xffff, /* dst_mask */
1754 TRUE), /* pcrel_offset */
1755
1756 /* Like R_PPC_REL16_HA but for split field in addpcis. */
1757 HOWTO (R_PPC_REL16DX_HA, /* type */
1758 16, /* rightshift */
1759 2, /* size (0 = byte, 1 = short, 2 = long) */
1760 16, /* bitsize */
1761 TRUE, /* pc_relative */
1762 0, /* bitpos */
1763 complain_overflow_signed, /* complain_on_overflow */
1764 ppc_elf_addr16_ha_reloc, /* special_function */
1765 "R_PPC_REL16DX_HA", /* name */
1766 FALSE, /* partial_inplace */
1767 0, /* src_mask */
1768 0x1fffc1, /* dst_mask */
1769 TRUE), /* pcrel_offset */
1770
1771 /* A split-field reloc for addpcis, non-relative (gas internal use only). */
1772 HOWTO (R_PPC_16DX_HA, /* type */
1773 16, /* rightshift */
1774 2, /* size (0 = byte, 1 = short, 2 = long) */
1775 16, /* bitsize */
1776 FALSE, /* pc_relative */
1777 0, /* bitpos */
1778 complain_overflow_signed, /* complain_on_overflow */
1779 ppc_elf_addr16_ha_reloc, /* special_function */
1780 "R_PPC_16DX_HA", /* name */
1781 FALSE, /* partial_inplace */
1782 0, /* src_mask */
1783 0x1fffc1, /* dst_mask */
1784 FALSE), /* pcrel_offset */
1785
1786 /* GNU extension to record C++ vtable hierarchy. */
1787 HOWTO (R_PPC_GNU_VTINHERIT, /* type */
1788 0, /* rightshift */
1789 0, /* size (0 = byte, 1 = short, 2 = long) */
1790 0, /* bitsize */
1791 FALSE, /* pc_relative */
1792 0, /* bitpos */
1793 complain_overflow_dont, /* complain_on_overflow */
1794 NULL, /* special_function */
1795 "R_PPC_GNU_VTINHERIT", /* name */
1796 FALSE, /* partial_inplace */
1797 0, /* src_mask */
1798 0, /* dst_mask */
1799 FALSE), /* pcrel_offset */
1800
1801 /* GNU extension to record C++ vtable member usage. */
1802 HOWTO (R_PPC_GNU_VTENTRY, /* type */
1803 0, /* rightshift */
1804 0, /* size (0 = byte, 1 = short, 2 = long) */
1805 0, /* bitsize */
1806 FALSE, /* pc_relative */
1807 0, /* bitpos */
1808 complain_overflow_dont, /* complain_on_overflow */
1809 NULL, /* special_function */
1810 "R_PPC_GNU_VTENTRY", /* name */
1811 FALSE, /* partial_inplace */
1812 0, /* src_mask */
1813 0, /* dst_mask */
1814 FALSE), /* pcrel_offset */
1815
1816 /* Phony reloc to handle AIX style TOC entries. */
1817 HOWTO (R_PPC_TOC16, /* type */
1818 0, /* rightshift */
1819 1, /* size (0 = byte, 1 = short, 2 = long) */
1820 16, /* bitsize */
1821 FALSE, /* pc_relative */
1822 0, /* bitpos */
1823 complain_overflow_signed, /* complain_on_overflow */
1824 ppc_elf_unhandled_reloc, /* special_function */
1825 "R_PPC_TOC16", /* name */
1826 FALSE, /* partial_inplace */
1827 0, /* src_mask */
1828 0xffff, /* dst_mask */
1829 FALSE), /* pcrel_offset */
1830 };
1831 \f
1832 /* Initialize the ppc_elf_howto_table, so that linear accesses can be done. */
1833
1834 static void
1835 ppc_elf_howto_init (void)
1836 {
1837 unsigned int i, type;
1838
1839 for (i = 0;
1840 i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]);
1841 i++)
1842 {
1843 type = ppc_elf_howto_raw[i].type;
1844 if (type >= (sizeof (ppc_elf_howto_table)
1845 / sizeof (ppc_elf_howto_table[0])))
1846 abort ();
1847 ppc_elf_howto_table[type] = &ppc_elf_howto_raw[i];
1848 }
1849 }
1850
1851 static reloc_howto_type *
1852 ppc_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1853 bfd_reloc_code_real_type code)
1854 {
1855 enum elf_ppc_reloc_type r;
1856
1857 /* Initialize howto table if not already done. */
1858 if (!ppc_elf_howto_table[R_PPC_ADDR32])
1859 ppc_elf_howto_init ();
1860
1861 switch (code)
1862 {
1863 default:
1864 return NULL;
1865
1866 case BFD_RELOC_NONE: r = R_PPC_NONE; break;
1867 case BFD_RELOC_32: r = R_PPC_ADDR32; break;
1868 case BFD_RELOC_PPC_BA26: r = R_PPC_ADDR24; break;
1869 case BFD_RELOC_PPC64_ADDR16_DS:
1870 case BFD_RELOC_16: r = R_PPC_ADDR16; break;
1871 case BFD_RELOC_PPC64_ADDR16_LO_DS:
1872 case BFD_RELOC_LO16: r = R_PPC_ADDR16_LO; break;
1873 case BFD_RELOC_HI16: r = R_PPC_ADDR16_HI; break;
1874 case BFD_RELOC_HI16_S: r = R_PPC_ADDR16_HA; break;
1875 case BFD_RELOC_PPC_BA16: r = R_PPC_ADDR14; break;
1876 case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC_ADDR14_BRTAKEN; break;
1877 case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC_ADDR14_BRNTAKEN; break;
1878 case BFD_RELOC_PPC_B26: r = R_PPC_REL24; break;
1879 case BFD_RELOC_PPC_B16: r = R_PPC_REL14; break;
1880 case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC_REL14_BRTAKEN; break;
1881 case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC_REL14_BRNTAKEN; break;
1882 case BFD_RELOC_PPC64_GOT16_DS:
1883 case BFD_RELOC_16_GOTOFF: r = R_PPC_GOT16; break;
1884 case BFD_RELOC_PPC64_GOT16_LO_DS:
1885 case BFD_RELOC_LO16_GOTOFF: r = R_PPC_GOT16_LO; break;
1886 case BFD_RELOC_HI16_GOTOFF: r = R_PPC_GOT16_HI; break;
1887 case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC_GOT16_HA; break;
1888 case BFD_RELOC_24_PLT_PCREL: r = R_PPC_PLTREL24; break;
1889 case BFD_RELOC_PPC_COPY: r = R_PPC_COPY; break;
1890 case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC_GLOB_DAT; break;
1891 case BFD_RELOC_PPC_LOCAL24PC: r = R_PPC_LOCAL24PC; break;
1892 case BFD_RELOC_32_PCREL: r = R_PPC_REL32; break;
1893 case BFD_RELOC_32_PLTOFF: r = R_PPC_PLT32; break;
1894 case BFD_RELOC_32_PLT_PCREL: r = R_PPC_PLTREL32; break;
1895 case BFD_RELOC_PPC64_PLT16_LO_DS:
1896 case BFD_RELOC_LO16_PLTOFF: r = R_PPC_PLT16_LO; break;
1897 case BFD_RELOC_HI16_PLTOFF: r = R_PPC_PLT16_HI; break;
1898 case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC_PLT16_HA; break;
1899 case BFD_RELOC_GPREL16: r = R_PPC_SDAREL16; break;
1900 case BFD_RELOC_PPC64_SECTOFF_DS:
1901 case BFD_RELOC_16_BASEREL: r = R_PPC_SECTOFF; break;
1902 case BFD_RELOC_PPC64_SECTOFF_LO_DS:
1903 case BFD_RELOC_LO16_BASEREL: r = R_PPC_SECTOFF_LO; break;
1904 case BFD_RELOC_HI16_BASEREL: r = R_PPC_SECTOFF_HI; break;
1905 case BFD_RELOC_HI16_S_BASEREL: r = R_PPC_SECTOFF_HA; break;
1906 case BFD_RELOC_CTOR: r = R_PPC_ADDR32; break;
1907 case BFD_RELOC_PPC64_TOC16_DS:
1908 case BFD_RELOC_PPC_TOC16: r = R_PPC_TOC16; break;
1909 case BFD_RELOC_PPC_TLS: r = R_PPC_TLS; break;
1910 case BFD_RELOC_PPC_TLSGD: r = R_PPC_TLSGD; break;
1911 case BFD_RELOC_PPC_TLSLD: r = R_PPC_TLSLD; break;
1912 case BFD_RELOC_PPC_DTPMOD: r = R_PPC_DTPMOD32; break;
1913 case BFD_RELOC_PPC64_TPREL16_DS:
1914 case BFD_RELOC_PPC_TPREL16: r = R_PPC_TPREL16; break;
1915 case BFD_RELOC_PPC64_TPREL16_LO_DS:
1916 case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC_TPREL16_LO; break;
1917 case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC_TPREL16_HI; break;
1918 case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC_TPREL16_HA; break;
1919 case BFD_RELOC_PPC_TPREL: r = R_PPC_TPREL32; break;
1920 case BFD_RELOC_PPC64_DTPREL16_DS:
1921 case BFD_RELOC_PPC_DTPREL16: r = R_PPC_DTPREL16; break;
1922 case BFD_RELOC_PPC64_DTPREL16_LO_DS:
1923 case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC_DTPREL16_LO; break;
1924 case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC_DTPREL16_HI; break;
1925 case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC_DTPREL16_HA; break;
1926 case BFD_RELOC_PPC_DTPREL: r = R_PPC_DTPREL32; break;
1927 case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC_GOT_TLSGD16; break;
1928 case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC_GOT_TLSGD16_LO; break;
1929 case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC_GOT_TLSGD16_HI; break;
1930 case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC_GOT_TLSGD16_HA; break;
1931 case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC_GOT_TLSLD16; break;
1932 case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC_GOT_TLSLD16_LO; break;
1933 case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC_GOT_TLSLD16_HI; break;
1934 case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC_GOT_TLSLD16_HA; break;
1935 case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC_GOT_TPREL16; break;
1936 case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC_GOT_TPREL16_LO; break;
1937 case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC_GOT_TPREL16_HI; break;
1938 case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC_GOT_TPREL16_HA; break;
1939 case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC_GOT_DTPREL16; break;
1940 case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC_GOT_DTPREL16_LO; break;
1941 case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC_GOT_DTPREL16_HI; break;
1942 case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC_GOT_DTPREL16_HA; break;
1943 case BFD_RELOC_PPC_EMB_NADDR32: r = R_PPC_EMB_NADDR32; break;
1944 case BFD_RELOC_PPC_EMB_NADDR16: r = R_PPC_EMB_NADDR16; break;
1945 case BFD_RELOC_PPC_EMB_NADDR16_LO: r = R_PPC_EMB_NADDR16_LO; break;
1946 case BFD_RELOC_PPC_EMB_NADDR16_HI: r = R_PPC_EMB_NADDR16_HI; break;
1947 case BFD_RELOC_PPC_EMB_NADDR16_HA: r = R_PPC_EMB_NADDR16_HA; break;
1948 case BFD_RELOC_PPC_EMB_SDAI16: r = R_PPC_EMB_SDAI16; break;
1949 case BFD_RELOC_PPC_EMB_SDA2I16: r = R_PPC_EMB_SDA2I16; break;
1950 case BFD_RELOC_PPC_EMB_SDA2REL: r = R_PPC_EMB_SDA2REL; break;
1951 case BFD_RELOC_PPC_EMB_SDA21: r = R_PPC_EMB_SDA21; break;
1952 case BFD_RELOC_PPC_EMB_MRKREF: r = R_PPC_EMB_MRKREF; break;
1953 case BFD_RELOC_PPC_EMB_RELSEC16: r = R_PPC_EMB_RELSEC16; break;
1954 case BFD_RELOC_PPC_EMB_RELST_LO: r = R_PPC_EMB_RELST_LO; break;
1955 case BFD_RELOC_PPC_EMB_RELST_HI: r = R_PPC_EMB_RELST_HI; break;
1956 case BFD_RELOC_PPC_EMB_RELST_HA: r = R_PPC_EMB_RELST_HA; break;
1957 case BFD_RELOC_PPC_EMB_BIT_FLD: r = R_PPC_EMB_BIT_FLD; break;
1958 case BFD_RELOC_PPC_EMB_RELSDA: r = R_PPC_EMB_RELSDA; break;
1959 case BFD_RELOC_PPC_VLE_REL8: r = R_PPC_VLE_REL8; break;
1960 case BFD_RELOC_PPC_VLE_REL15: r = R_PPC_VLE_REL15; break;
1961 case BFD_RELOC_PPC_VLE_REL24: r = R_PPC_VLE_REL24; break;
1962 case BFD_RELOC_PPC_VLE_LO16A: r = R_PPC_VLE_LO16A; break;
1963 case BFD_RELOC_PPC_VLE_LO16D: r = R_PPC_VLE_LO16D; break;
1964 case BFD_RELOC_PPC_VLE_HI16A: r = R_PPC_VLE_HI16A; break;
1965 case BFD_RELOC_PPC_VLE_HI16D: r = R_PPC_VLE_HI16D; break;
1966 case BFD_RELOC_PPC_VLE_HA16A: r = R_PPC_VLE_HA16A; break;
1967 case BFD_RELOC_PPC_VLE_HA16D: r = R_PPC_VLE_HA16D; break;
1968 case BFD_RELOC_PPC_VLE_SDA21: r = R_PPC_VLE_SDA21; break;
1969 case BFD_RELOC_PPC_VLE_SDA21_LO: r = R_PPC_VLE_SDA21_LO; break;
1970 case BFD_RELOC_PPC_VLE_SDAREL_LO16A:
1971 r = R_PPC_VLE_SDAREL_LO16A;
1972 break;
1973 case BFD_RELOC_PPC_VLE_SDAREL_LO16D:
1974 r = R_PPC_VLE_SDAREL_LO16D;
1975 break;
1976 case BFD_RELOC_PPC_VLE_SDAREL_HI16A:
1977 r = R_PPC_VLE_SDAREL_HI16A;
1978 break;
1979 case BFD_RELOC_PPC_VLE_SDAREL_HI16D:
1980 r = R_PPC_VLE_SDAREL_HI16D;
1981 break;
1982 case BFD_RELOC_PPC_VLE_SDAREL_HA16A:
1983 r = R_PPC_VLE_SDAREL_HA16A;
1984 break;
1985 case BFD_RELOC_PPC_VLE_SDAREL_HA16D:
1986 r = R_PPC_VLE_SDAREL_HA16D;
1987 break;
1988 case BFD_RELOC_16_PCREL: r = R_PPC_REL16; break;
1989 case BFD_RELOC_LO16_PCREL: r = R_PPC_REL16_LO; break;
1990 case BFD_RELOC_HI16_PCREL: r = R_PPC_REL16_HI; break;
1991 case BFD_RELOC_HI16_S_PCREL: r = R_PPC_REL16_HA; break;
1992 case BFD_RELOC_PPC_16DX_HA: r = R_PPC_16DX_HA; break;
1993 case BFD_RELOC_PPC_REL16DX_HA: r = R_PPC_REL16DX_HA; break;
1994 case BFD_RELOC_VTABLE_INHERIT: r = R_PPC_GNU_VTINHERIT; break;
1995 case BFD_RELOC_VTABLE_ENTRY: r = R_PPC_GNU_VTENTRY; break;
1996 }
1997
1998 return ppc_elf_howto_table[r];
1999 };
2000
2001 static reloc_howto_type *
2002 ppc_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
2003 const char *r_name)
2004 {
2005 unsigned int i;
2006
2007 for (i = 0;
2008 i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]);
2009 i++)
2010 if (ppc_elf_howto_raw[i].name != NULL
2011 && strcasecmp (ppc_elf_howto_raw[i].name, r_name) == 0)
2012 return &ppc_elf_howto_raw[i];
2013
2014 return NULL;
2015 }
2016
2017 /* Set the howto pointer for a PowerPC ELF reloc. */
2018
2019 static void
2020 ppc_elf_info_to_howto (bfd *abfd,
2021 arelent *cache_ptr,
2022 Elf_Internal_Rela *dst)
2023 {
2024 unsigned int r_type;
2025
2026 /* Initialize howto table if not already done. */
2027 if (!ppc_elf_howto_table[R_PPC_ADDR32])
2028 ppc_elf_howto_init ();
2029
2030 r_type = ELF32_R_TYPE (dst->r_info);
2031 if (r_type >= R_PPC_max)
2032 {
2033 /* xgettext:c-format */
2034 _bfd_error_handler (_("%B: unrecognised PPC reloc number: %d"),
2035 abfd, r_type);
2036 bfd_set_error (bfd_error_bad_value);
2037 r_type = R_PPC_NONE;
2038 }
2039 cache_ptr->howto = ppc_elf_howto_table[r_type];
2040
2041 /* Just because the above assert didn't trigger doesn't mean that
2042 ELF32_R_TYPE (dst->r_info) is necessarily a valid relocation. */
2043 if (!cache_ptr->howto)
2044 {
2045 /* xgettext:c-format */
2046 _bfd_error_handler (_("%B: invalid relocation type %d"),
2047 abfd, r_type);
2048 bfd_set_error (bfd_error_bad_value);
2049
2050 cache_ptr->howto = ppc_elf_howto_table[R_PPC_NONE];
2051 }
2052 }
2053
2054 /* Handle the R_PPC_ADDR16_HA and R_PPC_REL16_HA relocs. */
2055
2056 static bfd_reloc_status_type
2057 ppc_elf_addr16_ha_reloc (bfd *abfd,
2058 arelent *reloc_entry,
2059 asymbol *symbol,
2060 void *data,
2061 asection *input_section,
2062 bfd *output_bfd,
2063 char **error_message ATTRIBUTE_UNUSED)
2064 {
2065 enum elf_ppc_reloc_type r_type;
2066 long insn;
2067 bfd_size_type octets;
2068 bfd_vma value;
2069
2070 if (output_bfd != NULL)
2071 {
2072 reloc_entry->address += input_section->output_offset;
2073 return bfd_reloc_ok;
2074 }
2075
2076 reloc_entry->addend += 0x8000;
2077 r_type = reloc_entry->howto->type;
2078 if (r_type != R_PPC_REL16DX_HA)
2079 return bfd_reloc_continue;
2080
2081 value = 0;
2082 if (!bfd_is_com_section (symbol->section))
2083 value = symbol->value;
2084 value += (reloc_entry->addend
2085 + symbol->section->output_offset
2086 + symbol->section->output_section->vma);
2087 value -= (reloc_entry->address
2088 + input_section->output_offset
2089 + input_section->output_section->vma);
2090 value >>= 16;
2091
2092 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
2093 insn = bfd_get_32 (abfd, (bfd_byte *) data + octets);
2094 insn &= ~0x1fffc1;
2095 insn |= (value & 0xffc1) | ((value & 0x3e) << 15);
2096 bfd_put_32 (abfd, insn, (bfd_byte *) data + octets);
2097 return bfd_reloc_ok;
2098 }
2099
2100 static bfd_reloc_status_type
2101 ppc_elf_unhandled_reloc (bfd *abfd,
2102 arelent *reloc_entry,
2103 asymbol *symbol,
2104 void *data,
2105 asection *input_section,
2106 bfd *output_bfd,
2107 char **error_message)
2108 {
2109 /* If this is a relocatable link (output_bfd test tells us), just
2110 call the generic function. Any adjustment will be done at final
2111 link time. */
2112 if (output_bfd != NULL)
2113 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2114 input_section, output_bfd, error_message);
2115
2116 if (error_message != NULL)
2117 {
2118 static char buf[60];
2119 sprintf (buf, _("generic linker can't handle %s"),
2120 reloc_entry->howto->name);
2121 *error_message = buf;
2122 }
2123 return bfd_reloc_dangerous;
2124 }
2125 \f
2126 /* Sections created by the linker. */
2127
2128 typedef struct elf_linker_section
2129 {
2130 /* Pointer to the bfd section. */
2131 asection *section;
2132 /* Section name. */
2133 const char *name;
2134 /* Associated bss section name. */
2135 const char *bss_name;
2136 /* Associated symbol name. */
2137 const char *sym_name;
2138 /* Associated symbol. */
2139 struct elf_link_hash_entry *sym;
2140 } elf_linker_section_t;
2141
2142 /* Linked list of allocated pointer entries. This hangs off of the
2143 symbol lists, and provides allows us to return different pointers,
2144 based on different addend's. */
2145
2146 typedef struct elf_linker_section_pointers
2147 {
2148 /* next allocated pointer for this symbol */
2149 struct elf_linker_section_pointers *next;
2150 /* offset of pointer from beginning of section */
2151 bfd_vma offset;
2152 /* addend used */
2153 bfd_vma addend;
2154 /* which linker section this is */
2155 elf_linker_section_t *lsect;
2156 } elf_linker_section_pointers_t;
2157
2158 struct ppc_elf_obj_tdata
2159 {
2160 struct elf_obj_tdata elf;
2161
2162 /* A mapping from local symbols to offsets into the various linker
2163 sections added. This is index by the symbol index. */
2164 elf_linker_section_pointers_t **linker_section_pointers;
2165
2166 /* Flags used to auto-detect plt type. */
2167 unsigned int makes_plt_call : 1;
2168 unsigned int has_rel16 : 1;
2169 };
2170
2171 #define ppc_elf_tdata(bfd) \
2172 ((struct ppc_elf_obj_tdata *) (bfd)->tdata.any)
2173
2174 #define elf_local_ptr_offsets(bfd) \
2175 (ppc_elf_tdata (bfd)->linker_section_pointers)
2176
2177 #define is_ppc_elf(bfd) \
2178 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
2179 && elf_object_id (bfd) == PPC32_ELF_DATA)
2180
2181 /* Override the generic function because we store some extras. */
2182
2183 static bfd_boolean
2184 ppc_elf_mkobject (bfd *abfd)
2185 {
2186 return bfd_elf_allocate_object (abfd, sizeof (struct ppc_elf_obj_tdata),
2187 PPC32_ELF_DATA);
2188 }
2189
2190 /* When defaulting arch/mach, decode apuinfo to find a better match. */
2191
2192 bfd_boolean
2193 _bfd_elf_ppc_set_arch (bfd *abfd)
2194 {
2195 unsigned long mach = 0;
2196 asection *s;
2197 unsigned char *contents;
2198
2199 if (abfd->arch_info->bits_per_word == 32
2200 && bfd_big_endian (abfd))
2201 {
2202
2203 for (s = abfd->sections; s != NULL; s = s->next)
2204 if ((elf_section_data (s)->this_hdr.sh_flags & SHF_PPC_VLE) != 0)
2205 break;
2206 if (s != NULL)
2207 mach = bfd_mach_ppc_vle;
2208 }
2209
2210 if (mach == 0)
2211 {
2212 s = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2213 if (s != NULL && bfd_malloc_and_get_section (abfd, s, &contents))
2214 {
2215 unsigned int apuinfo_size = bfd_get_32 (abfd, contents + 4);
2216 unsigned int i;
2217
2218 for (i = 20; i < apuinfo_size + 20 && i + 4 <= s->size; i += 4)
2219 {
2220 unsigned int val = bfd_get_32 (abfd, contents + i);
2221 switch (val >> 16)
2222 {
2223 case PPC_APUINFO_PMR:
2224 case PPC_APUINFO_RFMCI:
2225 if (mach == 0)
2226 mach = bfd_mach_ppc_titan;
2227 break;
2228
2229 case PPC_APUINFO_ISEL:
2230 case PPC_APUINFO_CACHELCK:
2231 if (mach == bfd_mach_ppc_titan)
2232 mach = bfd_mach_ppc_e500mc;
2233 break;
2234
2235 case PPC_APUINFO_SPE:
2236 case PPC_APUINFO_EFS:
2237 case PPC_APUINFO_BRLOCK:
2238 if (mach != bfd_mach_ppc_vle)
2239 mach = bfd_mach_ppc_e500;
2240 break;
2241
2242 case PPC_APUINFO_VLE:
2243 mach = bfd_mach_ppc_vle;
2244 break;
2245
2246 default:
2247 mach = -1ul;
2248 }
2249 }
2250 free (contents);
2251 }
2252 }
2253
2254 if (mach != 0 && mach != -1ul)
2255 {
2256 const bfd_arch_info_type *arch;
2257
2258 for (arch = abfd->arch_info->next; arch; arch = arch->next)
2259 if (arch->mach == mach)
2260 {
2261 abfd->arch_info = arch;
2262 break;
2263 }
2264 }
2265 return TRUE;
2266 }
2267
2268 /* Fix bad default arch selected for a 32 bit input bfd when the
2269 default is 64 bit. Also select arch based on apuinfo. */
2270
2271 static bfd_boolean
2272 ppc_elf_object_p (bfd *abfd)
2273 {
2274 if (!abfd->arch_info->the_default)
2275 return TRUE;
2276
2277 if (abfd->arch_info->bits_per_word == 64)
2278 {
2279 Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd);
2280
2281 if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS32)
2282 {
2283 /* Relies on arch after 64 bit default being 32 bit default. */
2284 abfd->arch_info = abfd->arch_info->next;
2285 BFD_ASSERT (abfd->arch_info->bits_per_word == 32);
2286 }
2287 }
2288 return _bfd_elf_ppc_set_arch (abfd);
2289 }
2290
2291 /* Function to set whether a module needs the -mrelocatable bit set. */
2292
2293 static bfd_boolean
2294 ppc_elf_set_private_flags (bfd *abfd, flagword flags)
2295 {
2296 BFD_ASSERT (!elf_flags_init (abfd)
2297 || elf_elfheader (abfd)->e_flags == flags);
2298
2299 elf_elfheader (abfd)->e_flags = flags;
2300 elf_flags_init (abfd) = TRUE;
2301 return TRUE;
2302 }
2303
2304 /* Support for core dump NOTE sections. */
2305
2306 static bfd_boolean
2307 ppc_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
2308 {
2309 int offset;
2310 unsigned int size;
2311
2312 switch (note->descsz)
2313 {
2314 default:
2315 return FALSE;
2316
2317 case 268: /* Linux/PPC. */
2318 /* pr_cursig */
2319 elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12);
2320
2321 /* pr_pid */
2322 elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 24);
2323
2324 /* pr_reg */
2325 offset = 72;
2326 size = 192;
2327
2328 break;
2329 }
2330
2331 /* Make a ".reg/999" section. */
2332 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
2333 size, note->descpos + offset);
2334 }
2335
2336 static bfd_boolean
2337 ppc_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
2338 {
2339 switch (note->descsz)
2340 {
2341 default:
2342 return FALSE;
2343
2344 case 128: /* Linux/PPC elf_prpsinfo. */
2345 elf_tdata (abfd)->core->pid
2346 = bfd_get_32 (abfd, note->descdata + 16);
2347 elf_tdata (abfd)->core->program
2348 = _bfd_elfcore_strndup (abfd, note->descdata + 32, 16);
2349 elf_tdata (abfd)->core->command
2350 = _bfd_elfcore_strndup (abfd, note->descdata + 48, 80);
2351 }
2352
2353 /* Note that for some reason, a spurious space is tacked
2354 onto the end of the args in some (at least one anyway)
2355 implementations, so strip it off if it exists. */
2356
2357 {
2358 char *command = elf_tdata (abfd)->core->command;
2359 int n = strlen (command);
2360
2361 if (0 < n && command[n - 1] == ' ')
2362 command[n - 1] = '\0';
2363 }
2364
2365 return TRUE;
2366 }
2367
2368 static char *
2369 ppc_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type, ...)
2370 {
2371 switch (note_type)
2372 {
2373 default:
2374 return NULL;
2375
2376 case NT_PRPSINFO:
2377 {
2378 char data[128];
2379 va_list ap;
2380
2381 va_start (ap, note_type);
2382 memset (data, 0, sizeof (data));
2383 strncpy (data + 32, va_arg (ap, const char *), 16);
2384 strncpy (data + 48, va_arg (ap, const char *), 80);
2385 va_end (ap);
2386 return elfcore_write_note (abfd, buf, bufsiz,
2387 "CORE", note_type, data, sizeof (data));
2388 }
2389
2390 case NT_PRSTATUS:
2391 {
2392 char data[268];
2393 va_list ap;
2394 long pid;
2395 int cursig;
2396 const void *greg;
2397
2398 va_start (ap, note_type);
2399 memset (data, 0, 72);
2400 pid = va_arg (ap, long);
2401 bfd_put_32 (abfd, pid, data + 24);
2402 cursig = va_arg (ap, int);
2403 bfd_put_16 (abfd, cursig, data + 12);
2404 greg = va_arg (ap, const void *);
2405 memcpy (data + 72, greg, 192);
2406 memset (data + 264, 0, 4);
2407 va_end (ap);
2408 return elfcore_write_note (abfd, buf, bufsiz,
2409 "CORE", note_type, data, sizeof (data));
2410 }
2411 }
2412 }
2413
2414 static flagword
2415 ppc_elf_lookup_section_flags (char *flag_name)
2416 {
2417
2418 if (!strcmp (flag_name, "SHF_PPC_VLE"))
2419 return SHF_PPC_VLE;
2420
2421 return 0;
2422 }
2423
2424 /* Return address for Ith PLT stub in section PLT, for relocation REL
2425 or (bfd_vma) -1 if it should not be included. */
2426
2427 static bfd_vma
2428 ppc_elf_plt_sym_val (bfd_vma i ATTRIBUTE_UNUSED,
2429 const asection *plt ATTRIBUTE_UNUSED,
2430 const arelent *rel)
2431 {
2432 return rel->address;
2433 }
2434
2435 /* Handle a PowerPC specific section when reading an object file. This
2436 is called when bfd_section_from_shdr finds a section with an unknown
2437 type. */
2438
2439 static bfd_boolean
2440 ppc_elf_section_from_shdr (bfd *abfd,
2441 Elf_Internal_Shdr *hdr,
2442 const char *name,
2443 int shindex)
2444 {
2445 asection *newsect;
2446 flagword flags;
2447
2448 if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
2449 return FALSE;
2450
2451 newsect = hdr->bfd_section;
2452 flags = bfd_get_section_flags (abfd, newsect);
2453 if (hdr->sh_flags & SHF_EXCLUDE)
2454 flags |= SEC_EXCLUDE;
2455
2456 if (hdr->sh_type == SHT_ORDERED)
2457 flags |= SEC_SORT_ENTRIES;
2458
2459 bfd_set_section_flags (abfd, newsect, flags);
2460 return TRUE;
2461 }
2462
2463 /* Set up any other section flags and such that may be necessary. */
2464
2465 static bfd_boolean
2466 ppc_elf_fake_sections (bfd *abfd ATTRIBUTE_UNUSED,
2467 Elf_Internal_Shdr *shdr,
2468 asection *asect)
2469 {
2470 if ((asect->flags & SEC_SORT_ENTRIES) != 0)
2471 shdr->sh_type = SHT_ORDERED;
2472
2473 return TRUE;
2474 }
2475
2476 /* If we have .sbss2 or .PPC.EMB.sbss0 output sections, we
2477 need to bump up the number of section headers. */
2478
2479 static int
2480 ppc_elf_additional_program_headers (bfd *abfd,
2481 struct bfd_link_info *info ATTRIBUTE_UNUSED)
2482 {
2483 asection *s;
2484 int ret = 0;
2485
2486 s = bfd_get_section_by_name (abfd, ".sbss2");
2487 if (s != NULL && (s->flags & SEC_ALLOC) != 0)
2488 ++ret;
2489
2490 s = bfd_get_section_by_name (abfd, ".PPC.EMB.sbss0");
2491 if (s != NULL && (s->flags & SEC_ALLOC) != 0)
2492 ++ret;
2493
2494 return ret;
2495 }
2496
2497 /* Modify the segment map for VLE executables. */
2498
2499 bfd_boolean
2500 ppc_elf_modify_segment_map (bfd *abfd,
2501 struct bfd_link_info *info ATTRIBUTE_UNUSED)
2502 {
2503 struct elf_segment_map *m;
2504
2505 /* At this point in the link, output sections have already been sorted by
2506 LMA and assigned to segments. All that is left to do is to ensure
2507 there is no mixing of VLE & non-VLE sections in a text segment.
2508 If we find that case, we split the segment.
2509 We maintain the original output section order. */
2510
2511 for (m = elf_seg_map (abfd); m != NULL; m = m->next)
2512 {
2513 struct elf_segment_map *n;
2514 bfd_size_type amt;
2515 unsigned int j, k;
2516 unsigned int p_flags;
2517
2518 if (m->p_type != PT_LOAD || m->count == 0)
2519 continue;
2520
2521 for (p_flags = PF_R, j = 0; j != m->count; ++j)
2522 {
2523 if ((m->sections[j]->flags & SEC_READONLY) == 0)
2524 p_flags |= PF_W;
2525 if ((m->sections[j]->flags & SEC_CODE) != 0)
2526 {
2527 p_flags |= PF_X;
2528 if ((elf_section_flags (m->sections[j]) & SHF_PPC_VLE) != 0)
2529 p_flags |= PF_PPC_VLE;
2530 break;
2531 }
2532 }
2533 if (j != m->count)
2534 while (++j != m->count)
2535 {
2536 unsigned int p_flags1 = PF_R;
2537
2538 if ((m->sections[j]->flags & SEC_READONLY) == 0)
2539 p_flags1 |= PF_W;
2540 if ((m->sections[j]->flags & SEC_CODE) != 0)
2541 {
2542 p_flags1 |= PF_X;
2543 if ((elf_section_flags (m->sections[j]) & SHF_PPC_VLE) != 0)
2544 p_flags1 |= PF_PPC_VLE;
2545 if (((p_flags1 ^ p_flags) & PF_PPC_VLE) != 0)
2546 break;
2547 }
2548 p_flags |= p_flags1;
2549 }
2550 /* If we're splitting a segment which originally contained rw
2551 sections then those sections might now only be in one of the
2552 two parts. So always set p_flags if splitting, even if we
2553 are being called for objcopy with p_flags_valid set. */
2554 if (j != m->count || !m->p_flags_valid)
2555 {
2556 m->p_flags_valid = 1;
2557 m->p_flags = p_flags;
2558 }
2559 if (j == m->count)
2560 continue;
2561
2562 /* Sections 0..j-1 stay in this (current) segment,
2563 the remainder are put in a new segment.
2564 The scan resumes with the new segment. */
2565
2566 amt = sizeof (struct elf_segment_map);
2567 amt += (m->count - j - 1) * sizeof (asection *);
2568 n = (struct elf_segment_map *) bfd_zalloc (abfd, amt);
2569 if (n == NULL)
2570 return FALSE;
2571
2572 n->p_type = PT_LOAD;
2573 n->count = m->count - j;
2574 for (k = 0; k < n->count; ++k)
2575 n->sections[k] = m->sections[j + k];
2576 m->count = j;
2577 m->p_size_valid = 0;
2578 n->next = m->next;
2579 m->next = n;
2580 }
2581
2582 return TRUE;
2583 }
2584
2585 /* Add extra PPC sections -- Note, for now, make .sbss2 and
2586 .PPC.EMB.sbss0 a normal section, and not a bss section so
2587 that the linker doesn't crater when trying to make more than
2588 2 sections. */
2589
2590 static const struct bfd_elf_special_section ppc_elf_special_sections[] =
2591 {
2592 { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, SHF_ALLOC + SHF_EXECINSTR },
2593 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2594 { STRING_COMMA_LEN (".sbss2"), -2, SHT_PROGBITS, SHF_ALLOC },
2595 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2596 { STRING_COMMA_LEN (".sdata2"), -2, SHT_PROGBITS, SHF_ALLOC },
2597 { STRING_COMMA_LEN (".tags"), 0, SHT_ORDERED, SHF_ALLOC },
2598 { STRING_COMMA_LEN (APUINFO_SECTION_NAME), 0, SHT_NOTE, 0 },
2599 { STRING_COMMA_LEN (".PPC.EMB.sbss0"), 0, SHT_PROGBITS, SHF_ALLOC },
2600 { STRING_COMMA_LEN (".PPC.EMB.sdata0"), 0, SHT_PROGBITS, SHF_ALLOC },
2601 { NULL, 0, 0, 0, 0 }
2602 };
2603
2604 /* This is what we want for new plt/got. */
2605 static struct bfd_elf_special_section ppc_alt_plt =
2606 { STRING_COMMA_LEN (".plt"), 0, SHT_PROGBITS, SHF_ALLOC };
2607
2608 static const struct bfd_elf_special_section *
2609 ppc_elf_get_sec_type_attr (bfd *abfd, asection *sec)
2610 {
2611 const struct bfd_elf_special_section *ssect;
2612
2613 /* See if this is one of the special sections. */
2614 if (sec->name == NULL)
2615 return NULL;
2616
2617 ssect = _bfd_elf_get_special_section (sec->name, ppc_elf_special_sections,
2618 sec->use_rela_p);
2619 if (ssect != NULL)
2620 {
2621 if (ssect == ppc_elf_special_sections && (sec->flags & SEC_LOAD) != 0)
2622 ssect = &ppc_alt_plt;
2623 return ssect;
2624 }
2625
2626 return _bfd_elf_get_sec_type_attr (abfd, sec);
2627 }
2628 \f
2629 /* Very simple linked list structure for recording apuinfo values. */
2630 typedef struct apuinfo_list
2631 {
2632 struct apuinfo_list *next;
2633 unsigned long value;
2634 }
2635 apuinfo_list;
2636
2637 static apuinfo_list *head;
2638 static bfd_boolean apuinfo_set;
2639
2640 static void
2641 apuinfo_list_init (void)
2642 {
2643 head = NULL;
2644 apuinfo_set = FALSE;
2645 }
2646
2647 static void
2648 apuinfo_list_add (unsigned long value)
2649 {
2650 apuinfo_list *entry = head;
2651
2652 while (entry != NULL)
2653 {
2654 if (entry->value == value)
2655 return;
2656 entry = entry->next;
2657 }
2658
2659 entry = bfd_malloc (sizeof (* entry));
2660 if (entry == NULL)
2661 return;
2662
2663 entry->value = value;
2664 entry->next = head;
2665 head = entry;
2666 }
2667
2668 static unsigned
2669 apuinfo_list_length (void)
2670 {
2671 apuinfo_list *entry;
2672 unsigned long count;
2673
2674 for (entry = head, count = 0;
2675 entry;
2676 entry = entry->next)
2677 ++ count;
2678
2679 return count;
2680 }
2681
2682 static inline unsigned long
2683 apuinfo_list_element (unsigned long number)
2684 {
2685 apuinfo_list * entry;
2686
2687 for (entry = head;
2688 entry && number --;
2689 entry = entry->next)
2690 ;
2691
2692 return entry ? entry->value : 0;
2693 }
2694
2695 static void
2696 apuinfo_list_finish (void)
2697 {
2698 apuinfo_list *entry;
2699
2700 for (entry = head; entry;)
2701 {
2702 apuinfo_list *next = entry->next;
2703 free (entry);
2704 entry = next;
2705 }
2706
2707 head = NULL;
2708 }
2709
2710 /* Scan the input BFDs and create a linked list of
2711 the APUinfo values that will need to be emitted. */
2712
2713 static void
2714 ppc_elf_begin_write_processing (bfd *abfd, struct bfd_link_info *link_info)
2715 {
2716 bfd *ibfd;
2717 asection *asec;
2718 char *buffer = NULL;
2719 bfd_size_type largest_input_size = 0;
2720 unsigned i;
2721 unsigned long length;
2722 const char *error_message = NULL;
2723
2724 if (link_info == NULL)
2725 return;
2726
2727 apuinfo_list_init ();
2728
2729 /* Read in the input sections contents. */
2730 for (ibfd = link_info->input_bfds; ibfd; ibfd = ibfd->link.next)
2731 {
2732 unsigned long datum;
2733
2734 asec = bfd_get_section_by_name (ibfd, APUINFO_SECTION_NAME);
2735 if (asec == NULL)
2736 continue;
2737
2738 /* xgettext:c-format */
2739 error_message = _("corrupt %s section in %B");
2740 length = asec->size;
2741 if (length < 20)
2742 goto fail;
2743
2744 apuinfo_set = TRUE;
2745 if (largest_input_size < asec->size)
2746 {
2747 if (buffer)
2748 free (buffer);
2749 largest_input_size = asec->size;
2750 buffer = bfd_malloc (largest_input_size);
2751 if (!buffer)
2752 return;
2753 }
2754
2755 if (bfd_seek (ibfd, asec->filepos, SEEK_SET) != 0
2756 || (bfd_bread (buffer, length, ibfd) != length))
2757 {
2758 /* xgettext:c-format */
2759 error_message = _("unable to read in %s section from %B");
2760 goto fail;
2761 }
2762
2763 /* Verify the contents of the header. Note - we have to
2764 extract the values this way in order to allow for a
2765 host whose endian-ness is different from the target. */
2766 datum = bfd_get_32 (ibfd, buffer);
2767 if (datum != sizeof APUINFO_LABEL)
2768 goto fail;
2769
2770 datum = bfd_get_32 (ibfd, buffer + 8);
2771 if (datum != 0x2)
2772 goto fail;
2773
2774 if (strcmp (buffer + 12, APUINFO_LABEL) != 0)
2775 goto fail;
2776
2777 /* Get the number of bytes used for apuinfo entries. */
2778 datum = bfd_get_32 (ibfd, buffer + 4);
2779 if (datum + 20 != length)
2780 goto fail;
2781
2782 /* Scan the apuinfo section, building a list of apuinfo numbers. */
2783 for (i = 0; i < datum; i += 4)
2784 apuinfo_list_add (bfd_get_32 (ibfd, buffer + 20 + i));
2785 }
2786
2787 error_message = NULL;
2788
2789 if (apuinfo_set)
2790 {
2791 /* Compute the size of the output section. */
2792 unsigned num_entries = apuinfo_list_length ();
2793
2794 /* Set the output section size, if it exists. */
2795 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2796
2797 if (asec && ! bfd_set_section_size (abfd, asec, 20 + num_entries * 4))
2798 {
2799 ibfd = abfd;
2800 /* xgettext:c-format */
2801 error_message = _("warning: unable to set size of %s section in %B");
2802 }
2803 }
2804
2805 fail:
2806 if (buffer)
2807 free (buffer);
2808
2809 if (error_message)
2810 _bfd_error_handler (error_message, APUINFO_SECTION_NAME, ibfd);
2811 }
2812
2813 /* Prevent the output section from accumulating the input sections'
2814 contents. We have already stored this in our linked list structure. */
2815
2816 static bfd_boolean
2817 ppc_elf_write_section (bfd *abfd ATTRIBUTE_UNUSED,
2818 struct bfd_link_info *link_info ATTRIBUTE_UNUSED,
2819 asection *asec,
2820 bfd_byte *contents ATTRIBUTE_UNUSED)
2821 {
2822 return apuinfo_set && strcmp (asec->name, APUINFO_SECTION_NAME) == 0;
2823 }
2824
2825 /* Finally we can generate the output section. */
2826
2827 static void
2828 ppc_elf_final_write_processing (bfd *abfd, bfd_boolean linker ATTRIBUTE_UNUSED)
2829 {
2830 bfd_byte *buffer;
2831 asection *asec;
2832 unsigned i;
2833 unsigned num_entries;
2834 bfd_size_type length;
2835
2836 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2837 if (asec == NULL)
2838 return;
2839
2840 if (!apuinfo_set)
2841 return;
2842
2843 length = asec->size;
2844 if (length < 20)
2845 return;
2846
2847 buffer = bfd_malloc (length);
2848 if (buffer == NULL)
2849 {
2850 _bfd_error_handler
2851 (_("failed to allocate space for new APUinfo section."));
2852 return;
2853 }
2854
2855 /* Create the apuinfo header. */
2856 num_entries = apuinfo_list_length ();
2857 bfd_put_32 (abfd, sizeof APUINFO_LABEL, buffer);
2858 bfd_put_32 (abfd, num_entries * 4, buffer + 4);
2859 bfd_put_32 (abfd, 0x2, buffer + 8);
2860 strcpy ((char *) buffer + 12, APUINFO_LABEL);
2861
2862 length = 20;
2863 for (i = 0; i < num_entries; i++)
2864 {
2865 bfd_put_32 (abfd, apuinfo_list_element (i), buffer + length);
2866 length += 4;
2867 }
2868
2869 if (length != asec->size)
2870 _bfd_error_handler (_("failed to compute new APUinfo section."));
2871
2872 if (! bfd_set_section_contents (abfd, asec, buffer, (file_ptr) 0, length))
2873 _bfd_error_handler (_("failed to install new APUinfo section."));
2874
2875 free (buffer);
2876
2877 apuinfo_list_finish ();
2878 }
2879 \f
2880 static bfd_boolean
2881 is_nonpic_glink_stub (bfd *abfd, asection *glink, bfd_vma off)
2882 {
2883 bfd_byte buf[3 * 4];
2884
2885 if (!bfd_get_section_contents (abfd, glink, buf, off, sizeof buf))
2886 return FALSE;
2887
2888 return ((bfd_get_32 (abfd, buf + 0) & 0xffff0000) == LIS_11
2889 && (bfd_get_32 (abfd, buf + 4) & 0xffff0000) == LWZ_11_11
2890 && bfd_get_32 (abfd, buf + 8) == MTCTR_11);
2891 }
2892
2893 static bfd_boolean
2894 section_covers_vma (bfd *abfd ATTRIBUTE_UNUSED, asection *section, void *ptr)
2895 {
2896 bfd_vma vma = *(bfd_vma *) ptr;
2897 return ((section->flags & SEC_ALLOC) != 0
2898 && section->vma <= vma
2899 && vma < section->vma + section->size);
2900 }
2901
2902 static long
2903 ppc_elf_get_synthetic_symtab (bfd *abfd, long symcount, asymbol **syms,
2904 long dynsymcount, asymbol **dynsyms,
2905 asymbol **ret)
2906 {
2907 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
2908 asection *plt, *relplt, *dynamic, *glink;
2909 bfd_vma glink_vma = 0;
2910 bfd_vma resolv_vma = 0;
2911 bfd_vma stub_off;
2912 asymbol *s;
2913 arelent *p;
2914 long count, i, stub_delta;
2915 size_t size;
2916 char *names;
2917 bfd_byte buf[4];
2918
2919 *ret = NULL;
2920
2921 if ((abfd->flags & (DYNAMIC | EXEC_P)) == 0)
2922 return 0;
2923
2924 if (dynsymcount <= 0)
2925 return 0;
2926
2927 relplt = bfd_get_section_by_name (abfd, ".rela.plt");
2928 if (relplt == NULL)
2929 return 0;
2930
2931 plt = bfd_get_section_by_name (abfd, ".plt");
2932 if (plt == NULL)
2933 return 0;
2934
2935 /* Call common code to handle old-style executable PLTs. */
2936 if (elf_section_flags (plt) & SHF_EXECINSTR)
2937 return _bfd_elf_get_synthetic_symtab (abfd, symcount, syms,
2938 dynsymcount, dynsyms, ret);
2939
2940 /* If this object was prelinked, the prelinker stored the address
2941 of .glink at got[1]. If it wasn't prelinked, got[1] will be zero. */
2942 dynamic = bfd_get_section_by_name (abfd, ".dynamic");
2943 if (dynamic != NULL)
2944 {
2945 bfd_byte *dynbuf, *extdyn, *extdynend;
2946 size_t extdynsize;
2947 void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *);
2948
2949 if (!bfd_malloc_and_get_section (abfd, dynamic, &dynbuf))
2950 return -1;
2951
2952 extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn;
2953 swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in;
2954
2955 extdyn = dynbuf;
2956 extdynend = extdyn + dynamic->size;
2957 for (; extdyn < extdynend; extdyn += extdynsize)
2958 {
2959 Elf_Internal_Dyn dyn;
2960 (*swap_dyn_in) (abfd, extdyn, &dyn);
2961
2962 if (dyn.d_tag == DT_NULL)
2963 break;
2964
2965 if (dyn.d_tag == DT_PPC_GOT)
2966 {
2967 unsigned int g_o_t = dyn.d_un.d_val;
2968 asection *got = bfd_get_section_by_name (abfd, ".got");
2969 if (got != NULL
2970 && bfd_get_section_contents (abfd, got, buf,
2971 g_o_t - got->vma + 4, 4))
2972 glink_vma = bfd_get_32 (abfd, buf);
2973 break;
2974 }
2975 }
2976 free (dynbuf);
2977 }
2978
2979 /* Otherwise we read the first plt entry. */
2980 if (glink_vma == 0)
2981 {
2982 if (bfd_get_section_contents (abfd, plt, buf, 0, 4))
2983 glink_vma = bfd_get_32 (abfd, buf);
2984 }
2985
2986 if (glink_vma == 0)
2987 return 0;
2988
2989 /* The .glink section usually does not survive the final
2990 link; search for the section (usually .text) where the
2991 glink stubs now reside. */
2992 glink = bfd_sections_find_if (abfd, section_covers_vma, &glink_vma);
2993 if (glink == NULL)
2994 return 0;
2995
2996 /* Determine glink PLT resolver by reading the relative branch
2997 from the first glink stub. */
2998 if (bfd_get_section_contents (abfd, glink, buf,
2999 glink_vma - glink->vma, 4))
3000 {
3001 unsigned int insn = bfd_get_32 (abfd, buf);
3002
3003 /* The first glink stub may either branch to the resolver ... */
3004 insn ^= B;
3005 if ((insn & ~0x3fffffc) == 0)
3006 resolv_vma = glink_vma + (insn ^ 0x2000000) - 0x2000000;
3007
3008 /* ... or fall through a bunch of NOPs. */
3009 else if ((insn ^ B ^ NOP) == 0)
3010 for (i = 4;
3011 bfd_get_section_contents (abfd, glink, buf,
3012 glink_vma - glink->vma + i, 4);
3013 i += 4)
3014 if (bfd_get_32 (abfd, buf) != NOP)
3015 {
3016 resolv_vma = glink_vma + i;
3017 break;
3018 }
3019 }
3020
3021 count = relplt->size / sizeof (Elf32_External_Rela);
3022 /* If the stubs are those for -shared/-pie then we might have
3023 multiple stubs for each plt entry. If that is the case then
3024 there is no way to associate stubs with their plt entries short
3025 of figuring out the GOT pointer value used in the stub.
3026 The offsets tested here need to cover all possible values of
3027 GLINK_ENTRY_SIZE for other than __tls_get_addr_opt. */
3028 stub_off = glink_vma - glink->vma;
3029 for (stub_delta = 16; stub_delta <= 32; stub_delta += 8)
3030 if (is_nonpic_glink_stub (abfd, glink, stub_off - stub_delta))
3031 break;
3032 if (stub_delta > 32)
3033 return 0;
3034
3035 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
3036 if (! (*slurp_relocs) (abfd, relplt, dynsyms, TRUE))
3037 return -1;
3038
3039 size = count * sizeof (asymbol);
3040 p = relplt->relocation;
3041 for (i = 0; i < count; i++, p++)
3042 {
3043 size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt");
3044 if (p->addend != 0)
3045 size += sizeof ("+0x") - 1 + 8;
3046 }
3047
3048 size += sizeof (asymbol) + sizeof ("__glink");
3049
3050 if (resolv_vma)
3051 size += sizeof (asymbol) + sizeof ("__glink_PLTresolve");
3052
3053 s = *ret = bfd_malloc (size);
3054 if (s == NULL)
3055 return -1;
3056
3057 stub_off = glink_vma - glink->vma;
3058 names = (char *) (s + count + 1 + (resolv_vma != 0));
3059 p = relplt->relocation + count - 1;
3060 for (i = 0; i < count; i++)
3061 {
3062 size_t len;
3063
3064 stub_off -= stub_delta;
3065 if (strcmp ((*p->sym_ptr_ptr)->name, "__tls_get_addr_opt") == 0)
3066 stub_off -= 32;
3067 *s = **p->sym_ptr_ptr;
3068 /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since
3069 we are defining a symbol, ensure one of them is set. */
3070 if ((s->flags & BSF_LOCAL) == 0)
3071 s->flags |= BSF_GLOBAL;
3072 s->flags |= BSF_SYNTHETIC;
3073 s->section = glink;
3074 s->value = stub_off;
3075 s->name = names;
3076 s->udata.p = NULL;
3077 len = strlen ((*p->sym_ptr_ptr)->name);
3078 memcpy (names, (*p->sym_ptr_ptr)->name, len);
3079 names += len;
3080 if (p->addend != 0)
3081 {
3082 memcpy (names, "+0x", sizeof ("+0x") - 1);
3083 names += sizeof ("+0x") - 1;
3084 bfd_sprintf_vma (abfd, names, p->addend);
3085 names += strlen (names);
3086 }
3087 memcpy (names, "@plt", sizeof ("@plt"));
3088 names += sizeof ("@plt");
3089 ++s;
3090 --p;
3091 }
3092
3093 /* Add a symbol at the start of the glink branch table. */
3094 memset (s, 0, sizeof *s);
3095 s->the_bfd = abfd;
3096 s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
3097 s->section = glink;
3098 s->value = glink_vma - glink->vma;
3099 s->name = names;
3100 memcpy (names, "__glink", sizeof ("__glink"));
3101 names += sizeof ("__glink");
3102 s++;
3103 count++;
3104
3105 if (resolv_vma)
3106 {
3107 /* Add a symbol for the glink PLT resolver. */
3108 memset (s, 0, sizeof *s);
3109 s->the_bfd = abfd;
3110 s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
3111 s->section = glink;
3112 s->value = resolv_vma - glink->vma;
3113 s->name = names;
3114 memcpy (names, "__glink_PLTresolve", sizeof ("__glink_PLTresolve"));
3115 names += sizeof ("__glink_PLTresolve");
3116 s++;
3117 count++;
3118 }
3119
3120 return count;
3121 }
3122 \f
3123 /* The following functions are specific to the ELF linker, while
3124 functions above are used generally. They appear in this file more
3125 or less in the order in which they are called. eg.
3126 ppc_elf_check_relocs is called early in the link process,
3127 ppc_elf_finish_dynamic_sections is one of the last functions
3128 called. */
3129
3130 /* Track PLT entries needed for a given symbol. We might need more
3131 than one glink entry per symbol when generating a pic binary. */
3132 struct plt_entry
3133 {
3134 struct plt_entry *next;
3135
3136 /* -fPIC uses multiple GOT sections, one per file, called ".got2".
3137 This field stores the offset into .got2 used to initialise the
3138 GOT pointer reg. It will always be at least 32768. (Current
3139 gcc always uses an offset of 32768, but ld -r will pack .got2
3140 sections together resulting in larger offsets). */
3141 bfd_vma addend;
3142
3143 /* The .got2 section. */
3144 asection *sec;
3145
3146 /* PLT refcount or offset. */
3147 union
3148 {
3149 bfd_signed_vma refcount;
3150 bfd_vma offset;
3151 } plt;
3152
3153 /* .glink stub offset. */
3154 bfd_vma glink_offset;
3155 };
3156
3157 /* Of those relocs that might be copied as dynamic relocs, this
3158 function selects those that must be copied when linking a shared
3159 library or PIE, even when the symbol is local. */
3160
3161 static int
3162 must_be_dyn_reloc (struct bfd_link_info *info,
3163 enum elf_ppc_reloc_type r_type)
3164 {
3165 switch (r_type)
3166 {
3167 default:
3168 /* Only relative relocs can be resolved when the object load
3169 address isn't fixed. DTPREL32 is excluded because the
3170 dynamic linker needs to differentiate global dynamic from
3171 local dynamic __tls_index pairs when PPC_OPT_TLS is set. */
3172 return 1;
3173
3174 case R_PPC_REL24:
3175 case R_PPC_REL14:
3176 case R_PPC_REL14_BRTAKEN:
3177 case R_PPC_REL14_BRNTAKEN:
3178 case R_PPC_REL32:
3179 return 0;
3180
3181 case R_PPC_TPREL32:
3182 case R_PPC_TPREL16:
3183 case R_PPC_TPREL16_LO:
3184 case R_PPC_TPREL16_HI:
3185 case R_PPC_TPREL16_HA:
3186 /* These relocations are relative but in a shared library the
3187 linker doesn't know the thread pointer base. */
3188 return bfd_link_dll (info);
3189 }
3190 }
3191
3192 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
3193 copying dynamic variables from a shared lib into an app's dynbss
3194 section, and instead use a dynamic relocation to point into the
3195 shared lib. */
3196 #define ELIMINATE_COPY_RELOCS 1
3197
3198 /* Used to track dynamic relocations for local symbols. */
3199 struct ppc_dyn_relocs
3200 {
3201 struct ppc_dyn_relocs *next;
3202
3203 /* The input section of the reloc. */
3204 asection *sec;
3205
3206 /* Total number of relocs copied for the input section. */
3207 unsigned int count : 31;
3208
3209 /* Whether this entry is for STT_GNU_IFUNC symbols. */
3210 unsigned int ifunc : 1;
3211 };
3212
3213 /* PPC ELF linker hash entry. */
3214
3215 struct ppc_elf_link_hash_entry
3216 {
3217 struct elf_link_hash_entry elf;
3218
3219 /* If this symbol is used in the linker created sections, the processor
3220 specific backend uses this field to map the field into the offset
3221 from the beginning of the section. */
3222 elf_linker_section_pointers_t *linker_section_pointer;
3223
3224 /* Track dynamic relocs copied for this symbol. */
3225 struct elf_dyn_relocs *dyn_relocs;
3226
3227 /* Contexts in which symbol is used in the GOT (or TOC).
3228 TLS_GD .. TLS_TLS bits are or'd into the mask as the
3229 corresponding relocs are encountered during check_relocs.
3230 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
3231 indicate the corresponding GOT entry type is not needed. */
3232 #define TLS_GD 1 /* GD reloc. */
3233 #define TLS_LD 2 /* LD reloc. */
3234 #define TLS_TPREL 4 /* TPREL reloc, => IE. */
3235 #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
3236 #define TLS_TLS 16 /* Any TLS reloc. */
3237 #define TLS_TPRELGD 32 /* TPREL reloc resulting from GD->IE. */
3238 #define PLT_IFUNC 64 /* STT_GNU_IFUNC. */
3239 char tls_mask;
3240
3241 /* Nonzero if we have seen a small data relocation referring to this
3242 symbol. */
3243 unsigned char has_sda_refs : 1;
3244
3245 /* Flag use of given relocations. */
3246 unsigned char has_addr16_ha : 1;
3247 unsigned char has_addr16_lo : 1;
3248 };
3249
3250 #define ppc_elf_hash_entry(ent) ((struct ppc_elf_link_hash_entry *) (ent))
3251
3252 /* PPC ELF linker hash table. */
3253
3254 struct ppc_elf_link_hash_table
3255 {
3256 struct elf_link_hash_table elf;
3257
3258 /* Various options passed from the linker. */
3259 struct ppc_elf_params *params;
3260
3261 /* Short-cuts to get to dynamic linker sections. */
3262 asection *glink;
3263 asection *dynsbss;
3264 asection *relsbss;
3265 elf_linker_section_t sdata[2];
3266 asection *sbss;
3267 asection *glink_eh_frame;
3268
3269 /* The (unloaded but important) .rela.plt.unloaded on VxWorks. */
3270 asection *srelplt2;
3271
3272 /* Shortcut to __tls_get_addr. */
3273 struct elf_link_hash_entry *tls_get_addr;
3274
3275 /* The bfd that forced an old-style PLT. */
3276 bfd *old_bfd;
3277
3278 /* TLS local dynamic got entry handling. */
3279 union {
3280 bfd_signed_vma refcount;
3281 bfd_vma offset;
3282 } tlsld_got;
3283
3284 /* Offset of branch table to PltResolve function in glink. */
3285 bfd_vma glink_pltresolve;
3286
3287 /* Size of reserved GOT entries. */
3288 unsigned int got_header_size;
3289 /* Non-zero if allocating the header left a gap. */
3290 unsigned int got_gap;
3291
3292 /* The type of PLT we have chosen to use. */
3293 enum ppc_elf_plt_type plt_type;
3294
3295 /* True if the target system is VxWorks. */
3296 unsigned int is_vxworks:1;
3297
3298 /* Whether there exist local gnu indirect function resolvers,
3299 referenced by dynamic relocations. */
3300 unsigned int local_ifunc_resolver:1;
3301 unsigned int maybe_local_ifunc_resolver:1;
3302
3303 /* Set if tls optimization is enabled. */
3304 unsigned int do_tls_opt:1;
3305
3306 /* The size of PLT entries. */
3307 int plt_entry_size;
3308 /* The distance between adjacent PLT slots. */
3309 int plt_slot_size;
3310 /* The size of the first PLT entry. */
3311 int plt_initial_entry_size;
3312
3313 /* Small local sym cache. */
3314 struct sym_cache sym_cache;
3315 };
3316
3317 /* Rename some of the generic section flags to better document how they
3318 are used for ppc32. The flags are only valid for ppc32 elf objects. */
3319
3320 /* Nonzero if this section has TLS related relocations. */
3321 #define has_tls_reloc sec_flg0
3322
3323 /* Nonzero if this section has a call to __tls_get_addr. */
3324 #define has_tls_get_addr_call sec_flg1
3325
3326 /* Get the PPC ELF linker hash table from a link_info structure. */
3327
3328 #define ppc_elf_hash_table(p) \
3329 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
3330 == PPC32_ELF_DATA ? ((struct ppc_elf_link_hash_table *) ((p)->hash)) : NULL)
3331
3332 /* Create an entry in a PPC ELF linker hash table. */
3333
3334 static struct bfd_hash_entry *
3335 ppc_elf_link_hash_newfunc (struct bfd_hash_entry *entry,
3336 struct bfd_hash_table *table,
3337 const char *string)
3338 {
3339 /* Allocate the structure if it has not already been allocated by a
3340 subclass. */
3341 if (entry == NULL)
3342 {
3343 entry = bfd_hash_allocate (table,
3344 sizeof (struct ppc_elf_link_hash_entry));
3345 if (entry == NULL)
3346 return entry;
3347 }
3348
3349 /* Call the allocation method of the superclass. */
3350 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
3351 if (entry != NULL)
3352 {
3353 ppc_elf_hash_entry (entry)->linker_section_pointer = NULL;
3354 ppc_elf_hash_entry (entry)->dyn_relocs = NULL;
3355 ppc_elf_hash_entry (entry)->tls_mask = 0;
3356 ppc_elf_hash_entry (entry)->has_sda_refs = 0;
3357 }
3358
3359 return entry;
3360 }
3361
3362 /* Create a PPC ELF linker hash table. */
3363
3364 static struct bfd_link_hash_table *
3365 ppc_elf_link_hash_table_create (bfd *abfd)
3366 {
3367 struct ppc_elf_link_hash_table *ret;
3368 static struct ppc_elf_params default_params
3369 = { PLT_OLD, 0, 1, 0, 1, 0, 0, 12, 0, 0, 0 };
3370
3371 ret = bfd_zmalloc (sizeof (struct ppc_elf_link_hash_table));
3372 if (ret == NULL)
3373 return NULL;
3374
3375 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd,
3376 ppc_elf_link_hash_newfunc,
3377 sizeof (struct ppc_elf_link_hash_entry),
3378 PPC32_ELF_DATA))
3379 {
3380 free (ret);
3381 return NULL;
3382 }
3383
3384 ret->elf.init_plt_refcount.refcount = 0;
3385 ret->elf.init_plt_refcount.glist = NULL;
3386 ret->elf.init_plt_offset.offset = 0;
3387 ret->elf.init_plt_offset.glist = NULL;
3388
3389 ret->params = &default_params;
3390
3391 ret->sdata[0].name = ".sdata";
3392 ret->sdata[0].sym_name = "_SDA_BASE_";
3393 ret->sdata[0].bss_name = ".sbss";
3394
3395 ret->sdata[1].name = ".sdata2";
3396 ret->sdata[1].sym_name = "_SDA2_BASE_";
3397 ret->sdata[1].bss_name = ".sbss2";
3398
3399 ret->plt_entry_size = 12;
3400 ret->plt_slot_size = 8;
3401 ret->plt_initial_entry_size = 72;
3402
3403 return &ret->elf.root;
3404 }
3405
3406 /* Hook linker params into hash table. */
3407
3408 void
3409 ppc_elf_link_params (struct bfd_link_info *info, struct ppc_elf_params *params)
3410 {
3411 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
3412
3413 if (htab)
3414 htab->params = params;
3415 params->pagesize_p2 = bfd_log2 (params->pagesize);
3416 }
3417
3418 /* Create .got and the related sections. */
3419
3420 static bfd_boolean
3421 ppc_elf_create_got (bfd *abfd, struct bfd_link_info *info)
3422 {
3423 struct ppc_elf_link_hash_table *htab;
3424
3425 if (!_bfd_elf_create_got_section (abfd, info))
3426 return FALSE;
3427
3428 htab = ppc_elf_hash_table (info);
3429 if (!htab->is_vxworks)
3430 {
3431 /* The powerpc .got has a blrl instruction in it. Mark it
3432 executable. */
3433 flagword flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS
3434 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3435 if (!bfd_set_section_flags (abfd, htab->elf.sgot, flags))
3436 return FALSE;
3437 }
3438
3439 return TRUE;
3440 }
3441
3442 /* Create a special linker section, used for R_PPC_EMB_SDAI16 and
3443 R_PPC_EMB_SDA2I16 pointers. These sections become part of .sdata
3444 and .sdata2. Create _SDA_BASE_ and _SDA2_BASE too. */
3445
3446 static bfd_boolean
3447 ppc_elf_create_linker_section (bfd *abfd,
3448 struct bfd_link_info *info,
3449 flagword flags,
3450 elf_linker_section_t *lsect)
3451 {
3452 asection *s;
3453
3454 flags |= (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
3455 | SEC_LINKER_CREATED);
3456
3457 s = bfd_make_section_anyway_with_flags (abfd, lsect->name, flags);
3458 if (s == NULL)
3459 return FALSE;
3460 lsect->section = s;
3461
3462 /* Define the sym on the first section of this name. */
3463 s = bfd_get_section_by_name (abfd, lsect->name);
3464
3465 lsect->sym = _bfd_elf_define_linkage_sym (abfd, info, s, lsect->sym_name);
3466 if (lsect->sym == NULL)
3467 return FALSE;
3468 lsect->sym->root.u.def.value = 0x8000;
3469 return TRUE;
3470 }
3471
3472 static bfd_boolean
3473 ppc_elf_create_glink (bfd *abfd, struct bfd_link_info *info)
3474 {
3475 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
3476 asection *s;
3477 flagword flags;
3478
3479 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY | SEC_HAS_CONTENTS
3480 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3481 s = bfd_make_section_anyway_with_flags (abfd, ".glink", flags);
3482 htab->glink = s;
3483 if (s == NULL
3484 || !bfd_set_section_alignment (abfd, s,
3485 htab->params->ppc476_workaround ? 6 : 4))
3486 return FALSE;
3487
3488 if (!info->no_ld_generated_unwind_info)
3489 {
3490 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
3491 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3492 s = bfd_make_section_anyway_with_flags (abfd, ".eh_frame", flags);
3493 htab->glink_eh_frame = s;
3494 if (s == NULL
3495 || !bfd_set_section_alignment (abfd, s, 2))
3496 return FALSE;
3497 }
3498
3499 flags = SEC_ALLOC | SEC_LINKER_CREATED;
3500 s = bfd_make_section_anyway_with_flags (abfd, ".iplt", flags);
3501 htab->elf.iplt = s;
3502 if (s == NULL
3503 || !bfd_set_section_alignment (abfd, s, 4))
3504 return FALSE;
3505
3506 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
3507 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3508 s = bfd_make_section_anyway_with_flags (abfd, ".rela.iplt", flags);
3509 htab->elf.irelplt = s;
3510 if (s == NULL
3511 || ! bfd_set_section_alignment (abfd, s, 2))
3512 return FALSE;
3513
3514 if (!ppc_elf_create_linker_section (abfd, info, 0,
3515 &htab->sdata[0]))
3516 return FALSE;
3517
3518 if (!ppc_elf_create_linker_section (abfd, info, SEC_READONLY,
3519 &htab->sdata[1]))
3520 return FALSE;
3521
3522 return TRUE;
3523 }
3524
3525 /* We have to create .dynsbss and .rela.sbss here so that they get mapped
3526 to output sections (just like _bfd_elf_create_dynamic_sections has
3527 to create .dynbss and .rela.bss). */
3528
3529 static bfd_boolean
3530 ppc_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
3531 {
3532 struct ppc_elf_link_hash_table *htab;
3533 asection *s;
3534 flagword flags;
3535
3536 htab = ppc_elf_hash_table (info);
3537
3538 if (htab->elf.sgot == NULL
3539 && !ppc_elf_create_got (abfd, info))
3540 return FALSE;
3541
3542 if (!_bfd_elf_create_dynamic_sections (abfd, info))
3543 return FALSE;
3544
3545 if (htab->glink == NULL
3546 && !ppc_elf_create_glink (abfd, info))
3547 return FALSE;
3548
3549 s = bfd_make_section_anyway_with_flags (abfd, ".dynsbss",
3550 SEC_ALLOC | SEC_LINKER_CREATED);
3551 htab->dynsbss = s;
3552 if (s == NULL)
3553 return FALSE;
3554
3555 if (! bfd_link_pic (info))
3556 {
3557 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
3558 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3559 s = bfd_make_section_anyway_with_flags (abfd, ".rela.sbss", flags);
3560 htab->relsbss = s;
3561 if (s == NULL
3562 || ! bfd_set_section_alignment (abfd, s, 2))
3563 return FALSE;
3564 }
3565
3566 if (htab->is_vxworks
3567 && !elf_vxworks_create_dynamic_sections (abfd, info, &htab->srelplt2))
3568 return FALSE;
3569
3570 s = htab->elf.splt;
3571 flags = SEC_ALLOC | SEC_CODE | SEC_LINKER_CREATED;
3572 if (htab->plt_type == PLT_VXWORKS)
3573 /* The VxWorks PLT is a loaded section with contents. */
3574 flags |= SEC_HAS_CONTENTS | SEC_LOAD | SEC_READONLY;
3575 return bfd_set_section_flags (abfd, s, flags);
3576 }
3577
3578 /* Copy the extra info we tack onto an elf_link_hash_entry. */
3579
3580 static void
3581 ppc_elf_copy_indirect_symbol (struct bfd_link_info *info,
3582 struct elf_link_hash_entry *dir,
3583 struct elf_link_hash_entry *ind)
3584 {
3585 struct ppc_elf_link_hash_entry *edir, *eind;
3586
3587 edir = (struct ppc_elf_link_hash_entry *) dir;
3588 eind = (struct ppc_elf_link_hash_entry *) ind;
3589
3590 edir->tls_mask |= eind->tls_mask;
3591 edir->has_sda_refs |= eind->has_sda_refs;
3592
3593 if (edir->elf.versioned != versioned_hidden)
3594 edir->elf.ref_dynamic |= eind->elf.ref_dynamic;
3595 edir->elf.ref_regular |= eind->elf.ref_regular;
3596 edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak;
3597 edir->elf.non_got_ref |= eind->elf.non_got_ref;
3598 edir->elf.needs_plt |= eind->elf.needs_plt;
3599 edir->elf.pointer_equality_needed |= eind->elf.pointer_equality_needed;
3600
3601 /* If we were called to copy over info for a weak sym, that's all. */
3602 if (eind->elf.root.type != bfd_link_hash_indirect)
3603 return;
3604
3605 if (eind->dyn_relocs != NULL)
3606 {
3607 if (edir->dyn_relocs != NULL)
3608 {
3609 struct elf_dyn_relocs **pp;
3610 struct elf_dyn_relocs *p;
3611
3612 /* Add reloc counts against the indirect sym to the direct sym
3613 list. Merge any entries against the same section. */
3614 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
3615 {
3616 struct elf_dyn_relocs *q;
3617
3618 for (q = edir->dyn_relocs; q != NULL; q = q->next)
3619 if (q->sec == p->sec)
3620 {
3621 q->pc_count += p->pc_count;
3622 q->count += p->count;
3623 *pp = p->next;
3624 break;
3625 }
3626 if (q == NULL)
3627 pp = &p->next;
3628 }
3629 *pp = edir->dyn_relocs;
3630 }
3631
3632 edir->dyn_relocs = eind->dyn_relocs;
3633 eind->dyn_relocs = NULL;
3634 }
3635
3636 /* Copy over the GOT refcount entries that we may have already seen to
3637 the symbol which just became indirect. */
3638 edir->elf.got.refcount += eind->elf.got.refcount;
3639 eind->elf.got.refcount = 0;
3640
3641 /* And plt entries. */
3642 if (eind->elf.plt.plist != NULL)
3643 {
3644 if (edir->elf.plt.plist != NULL)
3645 {
3646 struct plt_entry **entp;
3647 struct plt_entry *ent;
3648
3649 for (entp = &eind->elf.plt.plist; (ent = *entp) != NULL; )
3650 {
3651 struct plt_entry *dent;
3652
3653 for (dent = edir->elf.plt.plist; dent != NULL; dent = dent->next)
3654 if (dent->sec == ent->sec && dent->addend == ent->addend)
3655 {
3656 dent->plt.refcount += ent->plt.refcount;
3657 *entp = ent->next;
3658 break;
3659 }
3660 if (dent == NULL)
3661 entp = &ent->next;
3662 }
3663 *entp = edir->elf.plt.plist;
3664 }
3665
3666 edir->elf.plt.plist = eind->elf.plt.plist;
3667 eind->elf.plt.plist = NULL;
3668 }
3669
3670 if (eind->elf.dynindx != -1)
3671 {
3672 if (edir->elf.dynindx != -1)
3673 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
3674 edir->elf.dynstr_index);
3675 edir->elf.dynindx = eind->elf.dynindx;
3676 edir->elf.dynstr_index = eind->elf.dynstr_index;
3677 eind->elf.dynindx = -1;
3678 eind->elf.dynstr_index = 0;
3679 }
3680 }
3681
3682 /* Hook called by the linker routine which adds symbols from an object
3683 file. We use it to put .comm items in .sbss, and not .bss. */
3684
3685 static bfd_boolean
3686 ppc_elf_add_symbol_hook (bfd *abfd,
3687 struct bfd_link_info *info,
3688 Elf_Internal_Sym *sym,
3689 const char **namep ATTRIBUTE_UNUSED,
3690 flagword *flagsp ATTRIBUTE_UNUSED,
3691 asection **secp,
3692 bfd_vma *valp)
3693 {
3694 if (sym->st_shndx == SHN_COMMON
3695 && !bfd_link_relocatable (info)
3696 && is_ppc_elf (info->output_bfd)
3697 && sym->st_size <= elf_gp_size (abfd))
3698 {
3699 /* Common symbols less than or equal to -G nn bytes are automatically
3700 put into .sbss. */
3701 struct ppc_elf_link_hash_table *htab;
3702
3703 htab = ppc_elf_hash_table (info);
3704 if (htab->sbss == NULL)
3705 {
3706 flagword flags = SEC_IS_COMMON | SEC_LINKER_CREATED;
3707
3708 if (!htab->elf.dynobj)
3709 htab->elf.dynobj = abfd;
3710
3711 htab->sbss = bfd_make_section_anyway_with_flags (htab->elf.dynobj,
3712 ".sbss",
3713 flags);
3714 if (htab->sbss == NULL)
3715 return FALSE;
3716 }
3717
3718 *secp = htab->sbss;
3719 *valp = sym->st_size;
3720 }
3721
3722 if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC
3723 && (abfd->flags & DYNAMIC) == 0
3724 && bfd_get_flavour (info->output_bfd) == bfd_target_elf_flavour)
3725 elf_tdata (info->output_bfd)->has_gnu_symbols |= elf_gnu_symbol_ifunc;
3726
3727 return TRUE;
3728 }
3729 \f
3730 /* Find a linker generated pointer with a given addend and type. */
3731
3732 static elf_linker_section_pointers_t *
3733 elf_find_pointer_linker_section
3734 (elf_linker_section_pointers_t *linker_pointers,
3735 bfd_vma addend,
3736 elf_linker_section_t *lsect)
3737 {
3738 for ( ; linker_pointers != NULL; linker_pointers = linker_pointers->next)
3739 if (lsect == linker_pointers->lsect && addend == linker_pointers->addend)
3740 return linker_pointers;
3741
3742 return NULL;
3743 }
3744
3745 /* Allocate a pointer to live in a linker created section. */
3746
3747 static bfd_boolean
3748 elf_allocate_pointer_linker_section (bfd *abfd,
3749 elf_linker_section_t *lsect,
3750 struct elf_link_hash_entry *h,
3751 const Elf_Internal_Rela *rel)
3752 {
3753 elf_linker_section_pointers_t **ptr_linker_section_ptr = NULL;
3754 elf_linker_section_pointers_t *linker_section_ptr;
3755 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
3756 bfd_size_type amt;
3757
3758 BFD_ASSERT (lsect != NULL);
3759
3760 /* Is this a global symbol? */
3761 if (h != NULL)
3762 {
3763 struct ppc_elf_link_hash_entry *eh;
3764
3765 /* Has this symbol already been allocated? If so, our work is done. */
3766 eh = (struct ppc_elf_link_hash_entry *) h;
3767 if (elf_find_pointer_linker_section (eh->linker_section_pointer,
3768 rel->r_addend,
3769 lsect))
3770 return TRUE;
3771
3772 ptr_linker_section_ptr = &eh->linker_section_pointer;
3773 }
3774 else
3775 {
3776 BFD_ASSERT (is_ppc_elf (abfd));
3777
3778 /* Allocation of a pointer to a local symbol. */
3779 elf_linker_section_pointers_t **ptr = elf_local_ptr_offsets (abfd);
3780
3781 /* Allocate a table to hold the local symbols if first time. */
3782 if (!ptr)
3783 {
3784 unsigned int num_symbols = elf_symtab_hdr (abfd).sh_info;
3785
3786 amt = num_symbols;
3787 amt *= sizeof (elf_linker_section_pointers_t *);
3788 ptr = bfd_zalloc (abfd, amt);
3789
3790 if (!ptr)
3791 return FALSE;
3792
3793 elf_local_ptr_offsets (abfd) = ptr;
3794 }
3795
3796 /* Has this symbol already been allocated? If so, our work is done. */
3797 if (elf_find_pointer_linker_section (ptr[r_symndx],
3798 rel->r_addend,
3799 lsect))
3800 return TRUE;
3801
3802 ptr_linker_section_ptr = &ptr[r_symndx];
3803 }
3804
3805 /* Allocate space for a pointer in the linker section, and allocate
3806 a new pointer record from internal memory. */
3807 BFD_ASSERT (ptr_linker_section_ptr != NULL);
3808 amt = sizeof (elf_linker_section_pointers_t);
3809 linker_section_ptr = bfd_alloc (abfd, amt);
3810
3811 if (!linker_section_ptr)
3812 return FALSE;
3813
3814 linker_section_ptr->next = *ptr_linker_section_ptr;
3815 linker_section_ptr->addend = rel->r_addend;
3816 linker_section_ptr->lsect = lsect;
3817 *ptr_linker_section_ptr = linker_section_ptr;
3818
3819 if (!bfd_set_section_alignment (lsect->section->owner, lsect->section, 2))
3820 return FALSE;
3821 linker_section_ptr->offset = lsect->section->size;
3822 lsect->section->size += 4;
3823
3824 #ifdef DEBUG
3825 fprintf (stderr,
3826 "Create pointer in linker section %s, offset = %ld, section size = %ld\n",
3827 lsect->name, (long) linker_section_ptr->offset,
3828 (long) lsect->section->size);
3829 #endif
3830
3831 return TRUE;
3832 }
3833
3834 static struct plt_entry **
3835 update_local_sym_info (bfd *abfd,
3836 Elf_Internal_Shdr *symtab_hdr,
3837 unsigned long r_symndx,
3838 int tls_type)
3839 {
3840 bfd_signed_vma *local_got_refcounts = elf_local_got_refcounts (abfd);
3841 struct plt_entry **local_plt;
3842 char *local_got_tls_masks;
3843
3844 if (local_got_refcounts == NULL)
3845 {
3846 bfd_size_type size = symtab_hdr->sh_info;
3847
3848 size *= (sizeof (*local_got_refcounts)
3849 + sizeof (*local_plt)
3850 + sizeof (*local_got_tls_masks));
3851 local_got_refcounts = bfd_zalloc (abfd, size);
3852 if (local_got_refcounts == NULL)
3853 return NULL;
3854 elf_local_got_refcounts (abfd) = local_got_refcounts;
3855 }
3856
3857 local_plt = (struct plt_entry **) (local_got_refcounts + symtab_hdr->sh_info);
3858 local_got_tls_masks = (char *) (local_plt + symtab_hdr->sh_info);
3859 local_got_tls_masks[r_symndx] |= tls_type;
3860 if (tls_type != PLT_IFUNC)
3861 local_got_refcounts[r_symndx] += 1;
3862 return local_plt + r_symndx;
3863 }
3864
3865 static bfd_boolean
3866 update_plt_info (bfd *abfd, struct plt_entry **plist,
3867 asection *sec, bfd_vma addend)
3868 {
3869 struct plt_entry *ent;
3870
3871 if (addend < 32768)
3872 sec = NULL;
3873 for (ent = *plist; ent != NULL; ent = ent->next)
3874 if (ent->sec == sec && ent->addend == addend)
3875 break;
3876 if (ent == NULL)
3877 {
3878 bfd_size_type amt = sizeof (*ent);
3879 ent = bfd_alloc (abfd, amt);
3880 if (ent == NULL)
3881 return FALSE;
3882 ent->next = *plist;
3883 ent->sec = sec;
3884 ent->addend = addend;
3885 ent->plt.refcount = 0;
3886 *plist = ent;
3887 }
3888 ent->plt.refcount += 1;
3889 return TRUE;
3890 }
3891
3892 static struct plt_entry *
3893 find_plt_ent (struct plt_entry **plist, asection *sec, bfd_vma addend)
3894 {
3895 struct plt_entry *ent;
3896
3897 if (addend < 32768)
3898 sec = NULL;
3899 for (ent = *plist; ent != NULL; ent = ent->next)
3900 if (ent->sec == sec && ent->addend == addend)
3901 break;
3902 return ent;
3903 }
3904
3905 static bfd_boolean
3906 is_branch_reloc (enum elf_ppc_reloc_type r_type)
3907 {
3908 return (r_type == R_PPC_PLTREL24
3909 || r_type == R_PPC_LOCAL24PC
3910 || r_type == R_PPC_REL24
3911 || r_type == R_PPC_REL14
3912 || r_type == R_PPC_REL14_BRTAKEN
3913 || r_type == R_PPC_REL14_BRNTAKEN
3914 || r_type == R_PPC_ADDR24
3915 || r_type == R_PPC_ADDR14
3916 || r_type == R_PPC_ADDR14_BRTAKEN
3917 || r_type == R_PPC_ADDR14_BRNTAKEN
3918 || r_type == R_PPC_VLE_REL24);
3919 }
3920
3921 static void
3922 bad_shared_reloc (bfd *abfd, enum elf_ppc_reloc_type r_type)
3923 {
3924 _bfd_error_handler
3925 /* xgettext:c-format */
3926 (_("%B: relocation %s cannot be used when making a shared object"),
3927 abfd,
3928 ppc_elf_howto_table[r_type]->name);
3929 bfd_set_error (bfd_error_bad_value);
3930 }
3931
3932 /* Look through the relocs for a section during the first phase, and
3933 allocate space in the global offset table or procedure linkage
3934 table. */
3935
3936 static bfd_boolean
3937 ppc_elf_check_relocs (bfd *abfd,
3938 struct bfd_link_info *info,
3939 asection *sec,
3940 const Elf_Internal_Rela *relocs)
3941 {
3942 struct ppc_elf_link_hash_table *htab;
3943 Elf_Internal_Shdr *symtab_hdr;
3944 struct elf_link_hash_entry **sym_hashes;
3945 const Elf_Internal_Rela *rel;
3946 const Elf_Internal_Rela *rel_end;
3947 asection *got2, *sreloc;
3948 struct elf_link_hash_entry *tga;
3949
3950 if (bfd_link_relocatable (info))
3951 return TRUE;
3952
3953 /* Don't do anything special with non-loaded, non-alloced sections.
3954 In particular, any relocs in such sections should not affect GOT
3955 and PLT reference counting (ie. we don't allow them to create GOT
3956 or PLT entries), there's no possibility or desire to optimize TLS
3957 relocs, and there's not much point in propagating relocs to shared
3958 libs that the dynamic linker won't relocate. */
3959 if ((sec->flags & SEC_ALLOC) == 0)
3960 return TRUE;
3961
3962 #ifdef DEBUG
3963 _bfd_error_handler ("ppc_elf_check_relocs called for section %A in %B",
3964 sec, abfd);
3965 #endif
3966
3967 BFD_ASSERT (is_ppc_elf (abfd));
3968
3969 /* Initialize howto table if not already done. */
3970 if (!ppc_elf_howto_table[R_PPC_ADDR32])
3971 ppc_elf_howto_init ();
3972
3973 htab = ppc_elf_hash_table (info);
3974 if (htab->glink == NULL)
3975 {
3976 if (htab->elf.dynobj == NULL)
3977 htab->elf.dynobj = abfd;
3978 if (!ppc_elf_create_glink (htab->elf.dynobj, info))
3979 return FALSE;
3980 }
3981 tga = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
3982 FALSE, FALSE, TRUE);
3983 symtab_hdr = &elf_symtab_hdr (abfd);
3984 sym_hashes = elf_sym_hashes (abfd);
3985 got2 = bfd_get_section_by_name (abfd, ".got2");
3986 sreloc = NULL;
3987
3988 rel_end = relocs + sec->reloc_count;
3989 for (rel = relocs; rel < rel_end; rel++)
3990 {
3991 unsigned long r_symndx;
3992 enum elf_ppc_reloc_type r_type;
3993 struct elf_link_hash_entry *h;
3994 int tls_type;
3995 struct plt_entry **ifunc;
3996
3997 r_symndx = ELF32_R_SYM (rel->r_info);
3998 if (r_symndx < symtab_hdr->sh_info)
3999 h = NULL;
4000 else
4001 {
4002 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4003 while (h->root.type == bfd_link_hash_indirect
4004 || h->root.type == bfd_link_hash_warning)
4005 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4006 }
4007
4008 /* If a relocation refers to _GLOBAL_OFFSET_TABLE_, create the .got.
4009 This shows up in particular in an R_PPC_ADDR32 in the eabi
4010 startup code. */
4011 if (h != NULL
4012 && htab->elf.sgot == NULL
4013 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
4014 {
4015 if (htab->elf.dynobj == NULL)
4016 htab->elf.dynobj = abfd;
4017 if (!ppc_elf_create_got (htab->elf.dynobj, info))
4018 return FALSE;
4019 BFD_ASSERT (h == htab->elf.hgot);
4020 }
4021
4022 tls_type = 0;
4023 r_type = ELF32_R_TYPE (rel->r_info);
4024 ifunc = NULL;
4025 if (h == NULL && !htab->is_vxworks)
4026 {
4027 Elf_Internal_Sym *isym = bfd_sym_from_r_symndx (&htab->sym_cache,
4028 abfd, r_symndx);
4029 if (isym == NULL)
4030 return FALSE;
4031
4032 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
4033 {
4034 /* Set PLT_IFUNC flag for this sym, no GOT entry yet. */
4035 ifunc = update_local_sym_info (abfd, symtab_hdr, r_symndx,
4036 PLT_IFUNC);
4037 if (ifunc == NULL)
4038 return FALSE;
4039
4040 /* STT_GNU_IFUNC symbols must have a PLT entry;
4041 In a non-pie executable even when there are
4042 no plt calls. */
4043 if (!bfd_link_pic (info)
4044 || is_branch_reloc (r_type))
4045 {
4046 bfd_vma addend = 0;
4047 if (r_type == R_PPC_PLTREL24)
4048 {
4049 ppc_elf_tdata (abfd)->makes_plt_call = 1;
4050 if (bfd_link_pic (info))
4051 addend = rel->r_addend;
4052 }
4053 if (!update_plt_info (abfd, ifunc, got2, addend))
4054 return FALSE;
4055 }
4056 }
4057 }
4058
4059 if (!htab->is_vxworks
4060 && is_branch_reloc (r_type)
4061 && h != NULL
4062 && h == tga)
4063 {
4064 if (rel != relocs
4065 && (ELF32_R_TYPE (rel[-1].r_info) == R_PPC_TLSGD
4066 || ELF32_R_TYPE (rel[-1].r_info) == R_PPC_TLSLD))
4067 /* We have a new-style __tls_get_addr call with a marker
4068 reloc. */
4069 ;
4070 else
4071 /* Mark this section as having an old-style call. */
4072 sec->has_tls_get_addr_call = 1;
4073 }
4074
4075 switch (r_type)
4076 {
4077 case R_PPC_TLSGD:
4078 case R_PPC_TLSLD:
4079 /* These special tls relocs tie a call to __tls_get_addr with
4080 its parameter symbol. */
4081 break;
4082
4083 case R_PPC_GOT_TLSLD16:
4084 case R_PPC_GOT_TLSLD16_LO:
4085 case R_PPC_GOT_TLSLD16_HI:
4086 case R_PPC_GOT_TLSLD16_HA:
4087 tls_type = TLS_TLS | TLS_LD;
4088 goto dogottls;
4089
4090 case R_PPC_GOT_TLSGD16:
4091 case R_PPC_GOT_TLSGD16_LO:
4092 case R_PPC_GOT_TLSGD16_HI:
4093 case R_PPC_GOT_TLSGD16_HA:
4094 tls_type = TLS_TLS | TLS_GD;
4095 goto dogottls;
4096
4097 case R_PPC_GOT_TPREL16:
4098 case R_PPC_GOT_TPREL16_LO:
4099 case R_PPC_GOT_TPREL16_HI:
4100 case R_PPC_GOT_TPREL16_HA:
4101 if (bfd_link_dll (info))
4102 info->flags |= DF_STATIC_TLS;
4103 tls_type = TLS_TLS | TLS_TPREL;
4104 goto dogottls;
4105
4106 case R_PPC_GOT_DTPREL16:
4107 case R_PPC_GOT_DTPREL16_LO:
4108 case R_PPC_GOT_DTPREL16_HI:
4109 case R_PPC_GOT_DTPREL16_HA:
4110 tls_type = TLS_TLS | TLS_DTPREL;
4111 dogottls:
4112 sec->has_tls_reloc = 1;
4113 /* Fall through. */
4114
4115 /* GOT16 relocations */
4116 case R_PPC_GOT16:
4117 case R_PPC_GOT16_LO:
4118 case R_PPC_GOT16_HI:
4119 case R_PPC_GOT16_HA:
4120 /* This symbol requires a global offset table entry. */
4121 if (htab->elf.sgot == NULL)
4122 {
4123 if (htab->elf.dynobj == NULL)
4124 htab->elf.dynobj = abfd;
4125 if (!ppc_elf_create_got (htab->elf.dynobj, info))
4126 return FALSE;
4127 }
4128 if (h != NULL)
4129 {
4130 h->got.refcount += 1;
4131 ppc_elf_hash_entry (h)->tls_mask |= tls_type;
4132 }
4133 else
4134 /* This is a global offset table entry for a local symbol. */
4135 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, tls_type))
4136 return FALSE;
4137
4138 /* We may also need a plt entry if the symbol turns out to be
4139 an ifunc. */
4140 if (h != NULL && !bfd_link_pic (info))
4141 {
4142 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
4143 return FALSE;
4144 }
4145 break;
4146
4147 /* Indirect .sdata relocation. */
4148 case R_PPC_EMB_SDAI16:
4149 if (bfd_link_pic (info))
4150 {
4151 bad_shared_reloc (abfd, r_type);
4152 return FALSE;
4153 }
4154 htab->sdata[0].sym->ref_regular = 1;
4155 if (!elf_allocate_pointer_linker_section (abfd, &htab->sdata[0],
4156 h, rel))
4157 return FALSE;
4158 if (h != NULL)
4159 {
4160 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4161 h->non_got_ref = TRUE;
4162 }
4163 break;
4164
4165 /* Indirect .sdata2 relocation. */
4166 case R_PPC_EMB_SDA2I16:
4167 if (bfd_link_pic (info))
4168 {
4169 bad_shared_reloc (abfd, r_type);
4170 return FALSE;
4171 }
4172 htab->sdata[1].sym->ref_regular = 1;
4173 if (!elf_allocate_pointer_linker_section (abfd, &htab->sdata[1],
4174 h, rel))
4175 return FALSE;
4176 if (h != NULL)
4177 {
4178 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4179 h->non_got_ref = TRUE;
4180 }
4181 break;
4182
4183 case R_PPC_SDAREL16:
4184 htab->sdata[0].sym->ref_regular = 1;
4185 /* Fall through. */
4186
4187 case R_PPC_VLE_SDAREL_LO16A:
4188 case R_PPC_VLE_SDAREL_LO16D:
4189 case R_PPC_VLE_SDAREL_HI16A:
4190 case R_PPC_VLE_SDAREL_HI16D:
4191 case R_PPC_VLE_SDAREL_HA16A:
4192 case R_PPC_VLE_SDAREL_HA16D:
4193 if (h != NULL)
4194 {
4195 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4196 h->non_got_ref = TRUE;
4197 }
4198 break;
4199
4200 case R_PPC_VLE_REL8:
4201 case R_PPC_VLE_REL15:
4202 case R_PPC_VLE_REL24:
4203 case R_PPC_VLE_LO16A:
4204 case R_PPC_VLE_LO16D:
4205 case R_PPC_VLE_HI16A:
4206 case R_PPC_VLE_HI16D:
4207 case R_PPC_VLE_HA16A:
4208 case R_PPC_VLE_HA16D:
4209 case R_PPC_VLE_ADDR20:
4210 break;
4211
4212 case R_PPC_EMB_SDA2REL:
4213 if (bfd_link_pic (info))
4214 {
4215 bad_shared_reloc (abfd, r_type);
4216 return FALSE;
4217 }
4218 htab->sdata[1].sym->ref_regular = 1;
4219 if (h != NULL)
4220 {
4221 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4222 h->non_got_ref = TRUE;
4223 }
4224 break;
4225
4226 case R_PPC_VLE_SDA21_LO:
4227 case R_PPC_VLE_SDA21:
4228 case R_PPC_EMB_SDA21:
4229 case R_PPC_EMB_RELSDA:
4230 if (bfd_link_pic (info))
4231 {
4232 bad_shared_reloc (abfd, r_type);
4233 return FALSE;
4234 }
4235 if (h != NULL)
4236 {
4237 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4238 h->non_got_ref = TRUE;
4239 }
4240 break;
4241
4242 case R_PPC_EMB_NADDR32:
4243 case R_PPC_EMB_NADDR16:
4244 case R_PPC_EMB_NADDR16_LO:
4245 case R_PPC_EMB_NADDR16_HI:
4246 case R_PPC_EMB_NADDR16_HA:
4247 if (bfd_link_pic (info))
4248 {
4249 bad_shared_reloc (abfd, r_type);
4250 return FALSE;
4251 }
4252 if (h != NULL)
4253 h->non_got_ref = TRUE;
4254 break;
4255
4256 case R_PPC_PLTREL24:
4257 if (h == NULL)
4258 break;
4259 /* Fall through */
4260 case R_PPC_PLT32:
4261 case R_PPC_PLTREL32:
4262 case R_PPC_PLT16_LO:
4263 case R_PPC_PLT16_HI:
4264 case R_PPC_PLT16_HA:
4265 #ifdef DEBUG
4266 fprintf (stderr, "Reloc requires a PLT entry\n");
4267 #endif
4268 /* This symbol requires a procedure linkage table entry. */
4269 if (h == NULL)
4270 {
4271 if (ifunc == NULL)
4272 {
4273 /* It does not make sense to have a procedure linkage
4274 table entry for a non-ifunc local symbol. */
4275 info->callbacks->einfo
4276 /* xgettext:c-format */
4277 (_("%H: %s reloc against local symbol\n"),
4278 abfd, sec, rel->r_offset,
4279 ppc_elf_howto_table[r_type]->name);
4280 bfd_set_error (bfd_error_bad_value);
4281 return FALSE;
4282 }
4283 }
4284 else
4285 {
4286 bfd_vma addend = 0;
4287
4288 if (r_type == R_PPC_PLTREL24)
4289 {
4290 ppc_elf_tdata (abfd)->makes_plt_call = 1;
4291 if (bfd_link_pic (info))
4292 addend = rel->r_addend;
4293 }
4294 h->needs_plt = 1;
4295 if (!update_plt_info (abfd, &h->plt.plist, got2, addend))
4296 return FALSE;
4297 }
4298 break;
4299
4300 /* The following relocations don't need to propagate the
4301 relocation if linking a shared object since they are
4302 section relative. */
4303 case R_PPC_SECTOFF:
4304 case R_PPC_SECTOFF_LO:
4305 case R_PPC_SECTOFF_HI:
4306 case R_PPC_SECTOFF_HA:
4307 case R_PPC_DTPREL16:
4308 case R_PPC_DTPREL16_LO:
4309 case R_PPC_DTPREL16_HI:
4310 case R_PPC_DTPREL16_HA:
4311 case R_PPC_TOC16:
4312 break;
4313
4314 case R_PPC_REL16:
4315 case R_PPC_REL16_LO:
4316 case R_PPC_REL16_HI:
4317 case R_PPC_REL16_HA:
4318 case R_PPC_REL16DX_HA:
4319 ppc_elf_tdata (abfd)->has_rel16 = 1;
4320 break;
4321
4322 /* These are just markers. */
4323 case R_PPC_TLS:
4324 case R_PPC_EMB_MRKREF:
4325 case R_PPC_NONE:
4326 case R_PPC_max:
4327 case R_PPC_RELAX:
4328 case R_PPC_RELAX_PLT:
4329 case R_PPC_RELAX_PLTREL24:
4330 case R_PPC_16DX_HA:
4331 break;
4332
4333 /* These should only appear in dynamic objects. */
4334 case R_PPC_COPY:
4335 case R_PPC_GLOB_DAT:
4336 case R_PPC_JMP_SLOT:
4337 case R_PPC_RELATIVE:
4338 case R_PPC_IRELATIVE:
4339 break;
4340
4341 /* These aren't handled yet. We'll report an error later. */
4342 case R_PPC_ADDR30:
4343 case R_PPC_EMB_RELSEC16:
4344 case R_PPC_EMB_RELST_LO:
4345 case R_PPC_EMB_RELST_HI:
4346 case R_PPC_EMB_RELST_HA:
4347 case R_PPC_EMB_BIT_FLD:
4348 break;
4349
4350 /* This refers only to functions defined in the shared library. */
4351 case R_PPC_LOCAL24PC:
4352 if (h != NULL && h == htab->elf.hgot && htab->plt_type == PLT_UNSET)
4353 {
4354 htab->plt_type = PLT_OLD;
4355 htab->old_bfd = abfd;
4356 }
4357 if (h != NULL && h->type == STT_GNU_IFUNC)
4358 {
4359 h->needs_plt = 1;
4360 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
4361 return FALSE;
4362 }
4363 break;
4364
4365 /* This relocation describes the C++ object vtable hierarchy.
4366 Reconstruct it for later use during GC. */
4367 case R_PPC_GNU_VTINHERIT:
4368 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
4369 return FALSE;
4370 break;
4371
4372 /* This relocation describes which C++ vtable entries are actually
4373 used. Record for later use during GC. */
4374 case R_PPC_GNU_VTENTRY:
4375 BFD_ASSERT (h != NULL);
4376 if (h != NULL
4377 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
4378 return FALSE;
4379 break;
4380
4381 /* We shouldn't really be seeing TPREL32. */
4382 case R_PPC_TPREL32:
4383 case R_PPC_TPREL16:
4384 case R_PPC_TPREL16_LO:
4385 case R_PPC_TPREL16_HI:
4386 case R_PPC_TPREL16_HA:
4387 if (bfd_link_dll (info))
4388 info->flags |= DF_STATIC_TLS;
4389 goto dodyn;
4390
4391 /* Nor these. */
4392 case R_PPC_DTPMOD32:
4393 case R_PPC_DTPREL32:
4394 goto dodyn;
4395
4396 case R_PPC_REL32:
4397 if (h == NULL
4398 && got2 != NULL
4399 && (sec->flags & SEC_CODE) != 0
4400 && bfd_link_pic (info)
4401 && htab->plt_type == PLT_UNSET)
4402 {
4403 /* Old -fPIC gcc code has .long LCTOC1-LCFx just before
4404 the start of a function, which assembles to a REL32
4405 reference to .got2. If we detect one of these, then
4406 force the old PLT layout because the linker cannot
4407 reliably deduce the GOT pointer value needed for
4408 PLT call stubs. */
4409 asection *s;
4410 Elf_Internal_Sym *isym;
4411
4412 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
4413 abfd, r_symndx);
4414 if (isym == NULL)
4415 return FALSE;
4416
4417 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
4418 if (s == got2)
4419 {
4420 htab->plt_type = PLT_OLD;
4421 htab->old_bfd = abfd;
4422 }
4423 }
4424 if (h == NULL || h == htab->elf.hgot)
4425 break;
4426 /* fall through */
4427
4428 case R_PPC_ADDR32:
4429 case R_PPC_ADDR16:
4430 case R_PPC_ADDR16_LO:
4431 case R_PPC_ADDR16_HI:
4432 case R_PPC_ADDR16_HA:
4433 case R_PPC_UADDR32:
4434 case R_PPC_UADDR16:
4435 if (h != NULL && !bfd_link_pic (info))
4436 {
4437 /* We may need a plt entry if the symbol turns out to be
4438 a function defined in a dynamic object. */
4439 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
4440 return FALSE;
4441
4442 /* We may need a copy reloc too. */
4443 h->non_got_ref = 1;
4444 h->pointer_equality_needed = 1;
4445 if (r_type == R_PPC_ADDR16_HA)
4446 ppc_elf_hash_entry (h)->has_addr16_ha = 1;
4447 if (r_type == R_PPC_ADDR16_LO)
4448 ppc_elf_hash_entry (h)->has_addr16_lo = 1;
4449 }
4450 goto dodyn;
4451
4452 case R_PPC_REL24:
4453 case R_PPC_REL14:
4454 case R_PPC_REL14_BRTAKEN:
4455 case R_PPC_REL14_BRNTAKEN:
4456 if (h == NULL)
4457 break;
4458 if (h == htab->elf.hgot)
4459 {
4460 if (htab->plt_type == PLT_UNSET)
4461 {
4462 htab->plt_type = PLT_OLD;
4463 htab->old_bfd = abfd;
4464 }
4465 break;
4466 }
4467 /* fall through */
4468
4469 case R_PPC_ADDR24:
4470 case R_PPC_ADDR14:
4471 case R_PPC_ADDR14_BRTAKEN:
4472 case R_PPC_ADDR14_BRNTAKEN:
4473 if (h != NULL && !bfd_link_pic (info))
4474 {
4475 /* We may need a plt entry if the symbol turns out to be
4476 a function defined in a dynamic object. */
4477 h->needs_plt = 1;
4478 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
4479 return FALSE;
4480 break;
4481 }
4482
4483 dodyn:
4484 /* If we are creating a shared library, and this is a reloc
4485 against a global symbol, or a non PC relative reloc
4486 against a local symbol, then we need to copy the reloc
4487 into the shared library. However, if we are linking with
4488 -Bsymbolic, we do not need to copy a reloc against a
4489 global symbol which is defined in an object we are
4490 including in the link (i.e., DEF_REGULAR is set). At
4491 this point we have not seen all the input files, so it is
4492 possible that DEF_REGULAR is not set now but will be set
4493 later (it is never cleared). In case of a weak definition,
4494 DEF_REGULAR may be cleared later by a strong definition in
4495 a shared library. We account for that possibility below by
4496 storing information in the dyn_relocs field of the hash
4497 table entry. A similar situation occurs when creating
4498 shared libraries and symbol visibility changes render the
4499 symbol local.
4500
4501 If on the other hand, we are creating an executable, we
4502 may need to keep relocations for symbols satisfied by a
4503 dynamic library if we manage to avoid copy relocs for the
4504 symbol. */
4505 if ((bfd_link_pic (info)
4506 && (must_be_dyn_reloc (info, r_type)
4507 || (h != NULL
4508 && (!SYMBOLIC_BIND (info, h)
4509 || h->root.type == bfd_link_hash_defweak
4510 || !h->def_regular))))
4511 || (ELIMINATE_COPY_RELOCS
4512 && !bfd_link_pic (info)
4513 && h != NULL
4514 && (h->root.type == bfd_link_hash_defweak
4515 || !h->def_regular)))
4516 {
4517 #ifdef DEBUG
4518 fprintf (stderr,
4519 "ppc_elf_check_relocs needs to "
4520 "create relocation for %s\n",
4521 (h && h->root.root.string
4522 ? h->root.root.string : "<unknown>"));
4523 #endif
4524 if (sreloc == NULL)
4525 {
4526 if (htab->elf.dynobj == NULL)
4527 htab->elf.dynobj = abfd;
4528
4529 sreloc = _bfd_elf_make_dynamic_reloc_section
4530 (sec, htab->elf.dynobj, 2, abfd, /*rela?*/ TRUE);
4531
4532 if (sreloc == NULL)
4533 return FALSE;
4534 }
4535
4536 /* If this is a global symbol, we count the number of
4537 relocations we need for this symbol. */
4538 if (h != NULL)
4539 {
4540 struct elf_dyn_relocs *p;
4541 struct elf_dyn_relocs **rel_head;
4542
4543 rel_head = &ppc_elf_hash_entry (h)->dyn_relocs;
4544 p = *rel_head;
4545 if (p == NULL || p->sec != sec)
4546 {
4547 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
4548 if (p == NULL)
4549 return FALSE;
4550 p->next = *rel_head;
4551 *rel_head = p;
4552 p->sec = sec;
4553 p->count = 0;
4554 p->pc_count = 0;
4555 }
4556 p->count += 1;
4557 if (!must_be_dyn_reloc (info, r_type))
4558 p->pc_count += 1;
4559 }
4560 else
4561 {
4562 /* Track dynamic relocs needed for local syms too.
4563 We really need local syms available to do this
4564 easily. Oh well. */
4565 struct ppc_dyn_relocs *p;
4566 struct ppc_dyn_relocs **rel_head;
4567 bfd_boolean is_ifunc;
4568 asection *s;
4569 void *vpp;
4570 Elf_Internal_Sym *isym;
4571
4572 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
4573 abfd, r_symndx);
4574 if (isym == NULL)
4575 return FALSE;
4576
4577 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
4578 if (s == NULL)
4579 s = sec;
4580
4581 vpp = &elf_section_data (s)->local_dynrel;
4582 rel_head = (struct ppc_dyn_relocs **) vpp;
4583 is_ifunc = ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC;
4584 p = *rel_head;
4585 if (p != NULL && p->sec == sec && p->ifunc != is_ifunc)
4586 p = p->next;
4587 if (p == NULL || p->sec != sec || p->ifunc != is_ifunc)
4588 {
4589 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
4590 if (p == NULL)
4591 return FALSE;
4592 p->next = *rel_head;
4593 *rel_head = p;
4594 p->sec = sec;
4595 p->ifunc = is_ifunc;
4596 p->count = 0;
4597 }
4598 p->count += 1;
4599 }
4600 }
4601
4602 break;
4603 }
4604 }
4605
4606 return TRUE;
4607 }
4608 \f
4609 /* Warn for conflicting Tag_GNU_Power_ABI_FP attributes between IBFD
4610 and OBFD, and merge non-conflicting ones. */
4611 void
4612 _bfd_elf_ppc_merge_fp_attributes (bfd *ibfd, struct bfd_link_info *info)
4613 {
4614 bfd *obfd = info->output_bfd;
4615 obj_attribute *in_attr, *in_attrs;
4616 obj_attribute *out_attr, *out_attrs;
4617
4618 in_attrs = elf_known_obj_attributes (ibfd)[OBJ_ATTR_GNU];
4619 out_attrs = elf_known_obj_attributes (obfd)[OBJ_ATTR_GNU];
4620
4621 in_attr = &in_attrs[Tag_GNU_Power_ABI_FP];
4622 out_attr = &out_attrs[Tag_GNU_Power_ABI_FP];
4623
4624 if (in_attr->i != out_attr->i)
4625 {
4626 int in_fp = in_attr->i & 3;
4627 int out_fp = out_attr->i & 3;
4628
4629 if (in_fp == 0)
4630 ;
4631 else if (out_fp == 0)
4632 {
4633 out_attr->type = 1;
4634 out_attr->i ^= in_fp;
4635 }
4636 else if (out_fp != 2 && in_fp == 2)
4637 _bfd_error_handler
4638 /* xgettext:c-format */
4639 (_("Warning: %B uses hard float, %B uses soft float"), obfd, ibfd);
4640 else if (out_fp == 2 && in_fp != 2)
4641 _bfd_error_handler
4642 /* xgettext:c-format */
4643 (_("Warning: %B uses hard float, %B uses soft float"), ibfd, obfd);
4644 else if (out_fp == 1 && in_fp == 3)
4645 _bfd_error_handler
4646 /* xgettext:c-format */
4647 (_("Warning: %B uses double-precision hard float, "
4648 "%B uses single-precision hard float"), obfd, ibfd);
4649 else if (out_fp == 3 && in_fp == 1)
4650 _bfd_error_handler
4651 /* xgettext:c-format */
4652 (_("Warning: %B uses double-precision hard float, "
4653 "%B uses single-precision hard float"), ibfd, obfd);
4654
4655 in_fp = in_attr->i & 0xc;
4656 out_fp = out_attr->i & 0xc;
4657 if (in_fp == 0)
4658 ;
4659 else if (out_fp == 0)
4660 {
4661 out_attr->type = 1;
4662 out_attr->i ^= in_fp;
4663 }
4664 else if (out_fp != 2 * 4 && in_fp == 2 * 4)
4665 _bfd_error_handler
4666 /* xgettext:c-format */
4667 (_("Warning: %B uses 64-bit long double, "
4668 "%B uses 128-bit long double"), ibfd, obfd);
4669 else if (in_fp != 2 * 4 && out_fp == 2 * 4)
4670 _bfd_error_handler
4671 /* xgettext:c-format */
4672 (_("Warning: %B uses 64-bit long double, "
4673 "%B uses 128-bit long double"), obfd, ibfd);
4674 else if (out_fp == 1 * 4 && in_fp == 3 * 4)
4675 _bfd_error_handler
4676 /* xgettext:c-format */
4677 (_("Warning: %B uses IBM long double, "
4678 "%B uses IEEE long double"), ibfd, obfd);
4679 else if (out_fp == 3 * 4 && in_fp == 1 * 4)
4680 _bfd_error_handler
4681 /* xgettext:c-format */
4682 (_("Warning: %B uses IBM long double, "
4683 "%B uses IEEE long double"), obfd, ibfd);
4684 }
4685 }
4686
4687 /* Merge object attributes from IBFD into OBFD. Warn if
4688 there are conflicting attributes. */
4689 static bfd_boolean
4690 ppc_elf_merge_obj_attributes (bfd *ibfd, struct bfd_link_info *info)
4691 {
4692 bfd *obfd;
4693 obj_attribute *in_attr, *in_attrs;
4694 obj_attribute *out_attr, *out_attrs;
4695
4696 _bfd_elf_ppc_merge_fp_attributes (ibfd, info);
4697
4698 obfd = info->output_bfd;
4699 in_attrs = elf_known_obj_attributes (ibfd)[OBJ_ATTR_GNU];
4700 out_attrs = elf_known_obj_attributes (obfd)[OBJ_ATTR_GNU];
4701
4702 /* Check for conflicting Tag_GNU_Power_ABI_Vector attributes and
4703 merge non-conflicting ones. */
4704 in_attr = &in_attrs[Tag_GNU_Power_ABI_Vector];
4705 out_attr = &out_attrs[Tag_GNU_Power_ABI_Vector];
4706 if (in_attr->i != out_attr->i)
4707 {
4708 int in_vec = in_attr->i & 3;
4709 int out_vec = out_attr->i & 3;
4710
4711 if (in_vec == 0)
4712 ;
4713 else if (out_vec == 0)
4714 {
4715 out_attr->type = 1;
4716 out_attr->i = in_vec;
4717 }
4718 /* For now, allow generic to transition to AltiVec or SPE
4719 without a warning. If GCC marked files with their stack
4720 alignment and used don't-care markings for files which are
4721 not affected by the vector ABI, we could warn about this
4722 case too. */
4723 else if (in_vec == 1)
4724 ;
4725 else if (out_vec == 1)
4726 {
4727 out_attr->type = 1;
4728 out_attr->i = in_vec;
4729 }
4730 else if (out_vec < in_vec)
4731 _bfd_error_handler
4732 /* xgettext:c-format */
4733 (_("Warning: %B uses AltiVec vector ABI, %B uses SPE vector ABI"),
4734 obfd, ibfd);
4735 else if (out_vec > in_vec)
4736 _bfd_error_handler
4737 /* xgettext:c-format */
4738 (_("Warning: %B uses AltiVec vector ABI, %B uses SPE vector ABI"),
4739 ibfd, obfd);
4740 }
4741
4742 /* Check for conflicting Tag_GNU_Power_ABI_Struct_Return attributes
4743 and merge non-conflicting ones. */
4744 in_attr = &in_attrs[Tag_GNU_Power_ABI_Struct_Return];
4745 out_attr = &out_attrs[Tag_GNU_Power_ABI_Struct_Return];
4746 if (in_attr->i != out_attr->i)
4747 {
4748 int in_struct = in_attr->i & 3;
4749 int out_struct = out_attr->i & 3;
4750
4751 if (in_struct == 0 || in_struct == 3)
4752 ;
4753 else if (out_struct == 0)
4754 {
4755 out_attr->type = 1;
4756 out_attr->i = in_struct;
4757 }
4758 else if (out_struct < in_struct)
4759 _bfd_error_handler
4760 /* xgettext:c-format */
4761 (_("Warning: %B uses r3/r4 for small structure returns, "
4762 "%B uses memory"), obfd, ibfd);
4763 else if (out_struct > in_struct)
4764 _bfd_error_handler
4765 /* xgettext:c-format */
4766 (_("Warning: %B uses r3/r4 for small structure returns, "
4767 "%B uses memory"), ibfd, obfd);
4768 }
4769
4770 /* Merge Tag_compatibility attributes and any common GNU ones. */
4771 _bfd_elf_merge_object_attributes (ibfd, info);
4772
4773 return TRUE;
4774 }
4775
4776 /* Merge backend specific data from an object file to the output
4777 object file when linking. */
4778
4779 static bfd_boolean
4780 ppc_elf_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info)
4781 {
4782 bfd *obfd = info->output_bfd;
4783 flagword old_flags;
4784 flagword new_flags;
4785 bfd_boolean error;
4786
4787 if (!is_ppc_elf (ibfd) || !is_ppc_elf (obfd))
4788 return TRUE;
4789
4790 /* Check if we have the same endianness. */
4791 if (! _bfd_generic_verify_endian_match (ibfd, info))
4792 return FALSE;
4793
4794 if (!ppc_elf_merge_obj_attributes (ibfd, info))
4795 return FALSE;
4796
4797 new_flags = elf_elfheader (ibfd)->e_flags;
4798 old_flags = elf_elfheader (obfd)->e_flags;
4799 if (!elf_flags_init (obfd))
4800 {
4801 /* First call, no flags set. */
4802 elf_flags_init (obfd) = TRUE;
4803 elf_elfheader (obfd)->e_flags = new_flags;
4804 }
4805
4806 /* Compatible flags are ok. */
4807 else if (new_flags == old_flags)
4808 ;
4809
4810 /* Incompatible flags. */
4811 else
4812 {
4813 /* Warn about -mrelocatable mismatch. Allow -mrelocatable-lib
4814 to be linked with either. */
4815 error = FALSE;
4816 if ((new_flags & EF_PPC_RELOCATABLE) != 0
4817 && (old_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0)
4818 {
4819 error = TRUE;
4820 _bfd_error_handler
4821 (_("%B: compiled with -mrelocatable and linked with "
4822 "modules compiled normally"), ibfd);
4823 }
4824 else if ((new_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0
4825 && (old_flags & EF_PPC_RELOCATABLE) != 0)
4826 {
4827 error = TRUE;
4828 _bfd_error_handler
4829 (_("%B: compiled normally and linked with "
4830 "modules compiled with -mrelocatable"), ibfd);
4831 }
4832
4833 /* The output is -mrelocatable-lib iff both the input files are. */
4834 if (! (new_flags & EF_PPC_RELOCATABLE_LIB))
4835 elf_elfheader (obfd)->e_flags &= ~EF_PPC_RELOCATABLE_LIB;
4836
4837 /* The output is -mrelocatable iff it can't be -mrelocatable-lib,
4838 but each input file is either -mrelocatable or -mrelocatable-lib. */
4839 if (! (elf_elfheader (obfd)->e_flags & EF_PPC_RELOCATABLE_LIB)
4840 && (new_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE))
4841 && (old_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE)))
4842 elf_elfheader (obfd)->e_flags |= EF_PPC_RELOCATABLE;
4843
4844 /* Do not warn about eabi vs. V.4 mismatch, just or in the bit if
4845 any module uses it. */
4846 elf_elfheader (obfd)->e_flags |= (new_flags & EF_PPC_EMB);
4847
4848 new_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
4849 old_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
4850
4851 /* Warn about any other mismatches. */
4852 if (new_flags != old_flags)
4853 {
4854 error = TRUE;
4855 _bfd_error_handler
4856 /* xgettext:c-format */
4857 (_("%B: uses different e_flags (%#x) fields "
4858 "than previous modules (%#x)"),
4859 ibfd, new_flags, old_flags);
4860 }
4861
4862 if (error)
4863 {
4864 bfd_set_error (bfd_error_bad_value);
4865 return FALSE;
4866 }
4867 }
4868
4869 return TRUE;
4870 }
4871
4872 static void
4873 ppc_elf_vle_split16 (bfd *input_bfd,
4874 asection *input_section,
4875 unsigned long offset,
4876 bfd_byte *loc,
4877 bfd_vma value,
4878 split16_format_type split16_format,
4879 bfd_boolean fixup)
4880 {
4881 unsigned int insn, opcode, top5;
4882
4883 insn = bfd_get_32 (input_bfd, loc);
4884 opcode = insn & 0xfc00f800;
4885 if (opcode == E_OR2I_INSN
4886 || opcode == E_AND2I_DOT_INSN
4887 || opcode == E_OR2IS_INSN
4888 || opcode == E_LIS_INSN
4889 || opcode == E_AND2IS_DOT_INSN)
4890 {
4891 if (split16_format != split16a_type)
4892 {
4893 if (fixup)
4894 split16_format = split16a_type;
4895 else
4896 _bfd_error_handler
4897 /* xgettext:c-format */
4898 (_("%B(%A+0x%lx): expected 16A style relocation on 0x%08x insn"),
4899 input_bfd, input_section, offset, opcode);
4900 }
4901 }
4902 else if (opcode == E_ADD2I_DOT_INSN
4903 || opcode == E_ADD2IS_INSN
4904 || opcode == E_CMP16I_INSN
4905 || opcode == E_MULL2I_INSN
4906 || opcode == E_CMPL16I_INSN
4907 || opcode == E_CMPH16I_INSN
4908 || opcode == E_CMPHL16I_INSN)
4909 {
4910 if (split16_format != split16d_type)
4911 {
4912 if (fixup)
4913 split16_format = split16d_type;
4914 else
4915 _bfd_error_handler
4916 /* xgettext:c-format */
4917 (_("%B(%A+0x%lx): expected 16D style relocation on 0x%08x insn"),
4918 input_bfd, input_section, offset, opcode);
4919 }
4920 }
4921 top5 = value & 0xf800;
4922 top5 = top5 << (split16_format == split16a_type ? 5 : 10);
4923 insn &= (split16_format == split16a_type ? ~0x1f07ff : ~0x3e007ff);
4924 insn |= top5;
4925 insn |= value & 0x7ff;
4926 bfd_put_32 (input_bfd, insn, loc);
4927 }
4928
4929 static void
4930 ppc_elf_vle_split20 (bfd *output_bfd, bfd_byte *loc, bfd_vma value)
4931 {
4932 unsigned int insn;
4933
4934 insn = bfd_get_32 (output_bfd, loc);
4935 /* We have an li20 field, bits 17..20, 11..15, 21..31. */
4936 /* Top 4 bits of value to 17..20. */
4937 insn |= (value & 0xf0000) >> 5;
4938 /* Next 5 bits of the value to 11..15. */
4939 insn |= (value & 0xf800) << 5;
4940 /* And the final 11 bits of the value to bits 21 to 31. */
4941 insn |= value & 0x7ff;
4942 bfd_put_32 (output_bfd, insn, loc);
4943 }
4944
4945 \f
4946 /* Choose which PLT scheme to use, and set .plt flags appropriately.
4947 Returns -1 on error, 0 for old PLT, 1 for new PLT. */
4948 int
4949 ppc_elf_select_plt_layout (bfd *output_bfd ATTRIBUTE_UNUSED,
4950 struct bfd_link_info *info)
4951 {
4952 struct ppc_elf_link_hash_table *htab;
4953 flagword flags;
4954
4955 htab = ppc_elf_hash_table (info);
4956
4957 if (htab->plt_type == PLT_UNSET)
4958 {
4959 struct elf_link_hash_entry *h;
4960
4961 if (htab->params->plt_style == PLT_OLD)
4962 htab->plt_type = PLT_OLD;
4963 else if (bfd_link_pic (info)
4964 && htab->elf.dynamic_sections_created
4965 && (h = elf_link_hash_lookup (&htab->elf, "_mcount",
4966 FALSE, FALSE, TRUE)) != NULL
4967 && (h->type == STT_FUNC
4968 || h->needs_plt)
4969 && h->ref_regular
4970 && !(SYMBOL_CALLS_LOCAL (info, h)
4971 || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)))
4972 {
4973 /* Profiling of shared libs (and pies) is not supported with
4974 secure plt, because ppc32 does profiling before a
4975 function prologue and a secure plt pic call stubs needs
4976 r30 to be set up. */
4977 htab->plt_type = PLT_OLD;
4978 }
4979 else
4980 {
4981 bfd *ibfd;
4982 enum ppc_elf_plt_type plt_type = htab->params->plt_style;
4983
4984 /* Look through the reloc flags left by ppc_elf_check_relocs.
4985 Use the old style bss plt if a file makes plt calls
4986 without using the new relocs, and if ld isn't given
4987 --secure-plt and we never see REL16 relocs. */
4988 if (plt_type == PLT_UNSET)
4989 plt_type = PLT_OLD;
4990 for (ibfd = info->input_bfds; ibfd; ibfd = ibfd->link.next)
4991 if (is_ppc_elf (ibfd))
4992 {
4993 if (ppc_elf_tdata (ibfd)->has_rel16)
4994 plt_type = PLT_NEW;
4995 else if (ppc_elf_tdata (ibfd)->makes_plt_call)
4996 {
4997 plt_type = PLT_OLD;
4998 htab->old_bfd = ibfd;
4999 break;
5000 }
5001 }
5002 htab->plt_type = plt_type;
5003 }
5004 }
5005 if (htab->plt_type == PLT_OLD && htab->params->plt_style == PLT_NEW)
5006 {
5007 if (htab->old_bfd != NULL)
5008 info->callbacks->einfo (_("%P: bss-plt forced due to %B\n"),
5009 htab->old_bfd);
5010 else
5011 info->callbacks->einfo (_("%P: bss-plt forced by profiling\n"));
5012 }
5013
5014 BFD_ASSERT (htab->plt_type != PLT_VXWORKS);
5015
5016 if (htab->plt_type == PLT_NEW)
5017 {
5018 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
5019 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
5020
5021 /* The new PLT is a loaded section. */
5022 if (htab->elf.splt != NULL
5023 && !bfd_set_section_flags (htab->elf.dynobj, htab->elf.splt, flags))
5024 return -1;
5025
5026 /* The new GOT is not executable. */
5027 if (htab->elf.sgot != NULL
5028 && !bfd_set_section_flags (htab->elf.dynobj, htab->elf.sgot, flags))
5029 return -1;
5030 }
5031 else
5032 {
5033 /* Stop an unused .glink section from affecting .text alignment. */
5034 if (htab->glink != NULL
5035 && !bfd_set_section_alignment (htab->elf.dynobj, htab->glink, 0))
5036 return -1;
5037 }
5038 return htab->plt_type == PLT_NEW;
5039 }
5040 \f
5041 /* Return the section that should be marked against GC for a given
5042 relocation. */
5043
5044 static asection *
5045 ppc_elf_gc_mark_hook (asection *sec,
5046 struct bfd_link_info *info,
5047 Elf_Internal_Rela *rel,
5048 struct elf_link_hash_entry *h,
5049 Elf_Internal_Sym *sym)
5050 {
5051 if (h != NULL)
5052 switch (ELF32_R_TYPE (rel->r_info))
5053 {
5054 case R_PPC_GNU_VTINHERIT:
5055 case R_PPC_GNU_VTENTRY:
5056 return NULL;
5057 }
5058
5059 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
5060 }
5061 \f
5062 /* Set plt output section type, htab->tls_get_addr, and call the
5063 generic ELF tls_setup function. */
5064
5065 asection *
5066 ppc_elf_tls_setup (bfd *obfd, struct bfd_link_info *info)
5067 {
5068 struct ppc_elf_link_hash_table *htab;
5069
5070 htab = ppc_elf_hash_table (info);
5071 htab->tls_get_addr = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
5072 FALSE, FALSE, TRUE);
5073 if (htab->plt_type != PLT_NEW)
5074 htab->params->no_tls_get_addr_opt = TRUE;
5075
5076 if (!htab->params->no_tls_get_addr_opt)
5077 {
5078 struct elf_link_hash_entry *opt, *tga;
5079 opt = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_opt",
5080 FALSE, FALSE, TRUE);
5081 if (opt != NULL
5082 && (opt->root.type == bfd_link_hash_defined
5083 || opt->root.type == bfd_link_hash_defweak))
5084 {
5085 /* If glibc supports an optimized __tls_get_addr call stub,
5086 signalled by the presence of __tls_get_addr_opt, and we'll
5087 be calling __tls_get_addr via a plt call stub, then
5088 make __tls_get_addr point to __tls_get_addr_opt. */
5089 tga = htab->tls_get_addr;
5090 if (htab->elf.dynamic_sections_created
5091 && tga != NULL
5092 && (tga->type == STT_FUNC
5093 || tga->needs_plt)
5094 && !(SYMBOL_CALLS_LOCAL (info, tga)
5095 || UNDEFWEAK_NO_DYNAMIC_RELOC (info, tga)))
5096 {
5097 struct plt_entry *ent;
5098 for (ent = tga->plt.plist; ent != NULL; ent = ent->next)
5099 if (ent->plt.refcount > 0)
5100 break;
5101 if (ent != NULL)
5102 {
5103 tga->root.type = bfd_link_hash_indirect;
5104 tga->root.u.i.link = &opt->root;
5105 ppc_elf_copy_indirect_symbol (info, opt, tga);
5106 opt->mark = 1;
5107 if (opt->dynindx != -1)
5108 {
5109 /* Use __tls_get_addr_opt in dynamic relocations. */
5110 opt->dynindx = -1;
5111 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
5112 opt->dynstr_index);
5113 if (!bfd_elf_link_record_dynamic_symbol (info, opt))
5114 return FALSE;
5115 }
5116 htab->tls_get_addr = opt;
5117 }
5118 }
5119 }
5120 else
5121 htab->params->no_tls_get_addr_opt = TRUE;
5122 }
5123 if (htab->plt_type == PLT_NEW
5124 && htab->elf.splt != NULL
5125 && htab->elf.splt->output_section != NULL)
5126 {
5127 elf_section_type (htab->elf.splt->output_section) = SHT_PROGBITS;
5128 elf_section_flags (htab->elf.splt->output_section) = SHF_ALLOC + SHF_WRITE;
5129 }
5130
5131 return _bfd_elf_tls_setup (obfd, info);
5132 }
5133
5134 /* Return TRUE iff REL is a branch reloc with a global symbol matching
5135 HASH. */
5136
5137 static bfd_boolean
5138 branch_reloc_hash_match (const bfd *ibfd,
5139 const Elf_Internal_Rela *rel,
5140 const struct elf_link_hash_entry *hash)
5141 {
5142 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
5143 enum elf_ppc_reloc_type r_type = ELF32_R_TYPE (rel->r_info);
5144 unsigned int r_symndx = ELF32_R_SYM (rel->r_info);
5145
5146 if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type))
5147 {
5148 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
5149 struct elf_link_hash_entry *h;
5150
5151 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5152 while (h->root.type == bfd_link_hash_indirect
5153 || h->root.type == bfd_link_hash_warning)
5154 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5155 if (h == hash)
5156 return TRUE;
5157 }
5158 return FALSE;
5159 }
5160
5161 /* Run through all the TLS relocs looking for optimization
5162 opportunities. */
5163
5164 bfd_boolean
5165 ppc_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED,
5166 struct bfd_link_info *info)
5167 {
5168 bfd *ibfd;
5169 asection *sec;
5170 struct ppc_elf_link_hash_table *htab;
5171 int pass;
5172
5173 if (!bfd_link_executable (info))
5174 return TRUE;
5175
5176 htab = ppc_elf_hash_table (info);
5177 if (htab == NULL)
5178 return FALSE;
5179
5180 /* Make two passes through the relocs. First time check that tls
5181 relocs involved in setting up a tls_get_addr call are indeed
5182 followed by such a call. If they are not, don't do any tls
5183 optimization. On the second pass twiddle tls_mask flags to
5184 notify relocate_section that optimization can be done, and
5185 adjust got and plt refcounts. */
5186 for (pass = 0; pass < 2; ++pass)
5187 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
5188 {
5189 Elf_Internal_Sym *locsyms = NULL;
5190 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
5191 asection *got2 = bfd_get_section_by_name (ibfd, ".got2");
5192
5193 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
5194 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
5195 {
5196 Elf_Internal_Rela *relstart, *rel, *relend;
5197 int expecting_tls_get_addr = 0;
5198
5199 /* Read the relocations. */
5200 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
5201 info->keep_memory);
5202 if (relstart == NULL)
5203 return FALSE;
5204
5205 relend = relstart + sec->reloc_count;
5206 for (rel = relstart; rel < relend; rel++)
5207 {
5208 enum elf_ppc_reloc_type r_type;
5209 unsigned long r_symndx;
5210 struct elf_link_hash_entry *h = NULL;
5211 char *tls_mask;
5212 char tls_set, tls_clear;
5213 bfd_boolean is_local;
5214 bfd_signed_vma *got_count;
5215
5216 r_symndx = ELF32_R_SYM (rel->r_info);
5217 if (r_symndx >= symtab_hdr->sh_info)
5218 {
5219 struct elf_link_hash_entry **sym_hashes;
5220
5221 sym_hashes = elf_sym_hashes (ibfd);
5222 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5223 while (h->root.type == bfd_link_hash_indirect
5224 || h->root.type == bfd_link_hash_warning)
5225 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5226 }
5227
5228 is_local = FALSE;
5229 if (h == NULL
5230 || !h->def_dynamic)
5231 is_local = TRUE;
5232
5233 r_type = ELF32_R_TYPE (rel->r_info);
5234 /* If this section has old-style __tls_get_addr calls
5235 without marker relocs, then check that each
5236 __tls_get_addr call reloc is preceded by a reloc
5237 that conceivably belongs to the __tls_get_addr arg
5238 setup insn. If we don't find matching arg setup
5239 relocs, don't do any tls optimization. */
5240 if (pass == 0
5241 && sec->has_tls_get_addr_call
5242 && h != NULL
5243 && h == htab->tls_get_addr
5244 && !expecting_tls_get_addr
5245 && is_branch_reloc (r_type))
5246 {
5247 info->callbacks->minfo ("%H __tls_get_addr lost arg, "
5248 "TLS optimization disabled\n",
5249 ibfd, sec, rel->r_offset);
5250 if (elf_section_data (sec)->relocs != relstart)
5251 free (relstart);
5252 return TRUE;
5253 }
5254
5255 expecting_tls_get_addr = 0;
5256 switch (r_type)
5257 {
5258 case R_PPC_GOT_TLSLD16:
5259 case R_PPC_GOT_TLSLD16_LO:
5260 expecting_tls_get_addr = 1;
5261 /* Fall through. */
5262
5263 case R_PPC_GOT_TLSLD16_HI:
5264 case R_PPC_GOT_TLSLD16_HA:
5265 /* These relocs should never be against a symbol
5266 defined in a shared lib. Leave them alone if
5267 that turns out to be the case. */
5268 if (!is_local)
5269 continue;
5270
5271 /* LD -> LE */
5272 tls_set = 0;
5273 tls_clear = TLS_LD;
5274 break;
5275
5276 case R_PPC_GOT_TLSGD16:
5277 case R_PPC_GOT_TLSGD16_LO:
5278 expecting_tls_get_addr = 1;
5279 /* Fall through. */
5280
5281 case R_PPC_GOT_TLSGD16_HI:
5282 case R_PPC_GOT_TLSGD16_HA:
5283 if (is_local)
5284 /* GD -> LE */
5285 tls_set = 0;
5286 else
5287 /* GD -> IE */
5288 tls_set = TLS_TLS | TLS_TPRELGD;
5289 tls_clear = TLS_GD;
5290 break;
5291
5292 case R_PPC_GOT_TPREL16:
5293 case R_PPC_GOT_TPREL16_LO:
5294 case R_PPC_GOT_TPREL16_HI:
5295 case R_PPC_GOT_TPREL16_HA:
5296 if (is_local)
5297 {
5298 /* IE -> LE */
5299 tls_set = 0;
5300 tls_clear = TLS_TPREL;
5301 break;
5302 }
5303 else
5304 continue;
5305
5306 case R_PPC_TLSGD:
5307 case R_PPC_TLSLD:
5308 expecting_tls_get_addr = 2;
5309 tls_set = 0;
5310 tls_clear = 0;
5311 break;
5312
5313 default:
5314 continue;
5315 }
5316
5317 if (pass == 0)
5318 {
5319 if (!expecting_tls_get_addr
5320 || (expecting_tls_get_addr == 1
5321 && !sec->has_tls_get_addr_call))
5322 continue;
5323
5324 if (rel + 1 < relend
5325 && branch_reloc_hash_match (ibfd, rel + 1,
5326 htab->tls_get_addr))
5327 continue;
5328
5329 /* Uh oh, we didn't find the expected call. We
5330 could just mark this symbol to exclude it
5331 from tls optimization but it's safer to skip
5332 the entire optimization. */
5333 info->callbacks->minfo (_("%H arg lost __tls_get_addr, "
5334 "TLS optimization disabled\n"),
5335 ibfd, sec, rel->r_offset);
5336 if (elf_section_data (sec)->relocs != relstart)
5337 free (relstart);
5338 return TRUE;
5339 }
5340
5341 if (expecting_tls_get_addr)
5342 {
5343 struct plt_entry *ent;
5344 bfd_vma addend = 0;
5345
5346 if (bfd_link_pic (info)
5347 && ELF32_R_TYPE (rel[1].r_info) == R_PPC_PLTREL24)
5348 addend = rel[1].r_addend;
5349 ent = find_plt_ent (&htab->tls_get_addr->plt.plist,
5350 got2, addend);
5351 if (ent != NULL && ent->plt.refcount > 0)
5352 ent->plt.refcount -= 1;
5353
5354 if (expecting_tls_get_addr == 2)
5355 continue;
5356 }
5357
5358 if (h != NULL)
5359 {
5360 tls_mask = &ppc_elf_hash_entry (h)->tls_mask;
5361 got_count = &h->got.refcount;
5362 }
5363 else
5364 {
5365 bfd_signed_vma *lgot_refs;
5366 struct plt_entry **local_plt;
5367 char *lgot_masks;
5368
5369 if (locsyms == NULL)
5370 {
5371 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
5372 if (locsyms == NULL)
5373 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
5374 symtab_hdr->sh_info,
5375 0, NULL, NULL, NULL);
5376 if (locsyms == NULL)
5377 {
5378 if (elf_section_data (sec)->relocs != relstart)
5379 free (relstart);
5380 return FALSE;
5381 }
5382 }
5383 lgot_refs = elf_local_got_refcounts (ibfd);
5384 if (lgot_refs == NULL)
5385 abort ();
5386 local_plt = (struct plt_entry **)
5387 (lgot_refs + symtab_hdr->sh_info);
5388 lgot_masks = (char *) (local_plt + symtab_hdr->sh_info);
5389 tls_mask = &lgot_masks[r_symndx];
5390 got_count = &lgot_refs[r_symndx];
5391 }
5392
5393 if (tls_set == 0)
5394 {
5395 /* We managed to get rid of a got entry. */
5396 if (*got_count > 0)
5397 *got_count -= 1;
5398 }
5399
5400 *tls_mask |= tls_set;
5401 *tls_mask &= ~tls_clear;
5402 }
5403
5404 if (elf_section_data (sec)->relocs != relstart)
5405 free (relstart);
5406 }
5407
5408 if (locsyms != NULL
5409 && (symtab_hdr->contents != (unsigned char *) locsyms))
5410 {
5411 if (!info->keep_memory)
5412 free (locsyms);
5413 else
5414 symtab_hdr->contents = (unsigned char *) locsyms;
5415 }
5416 }
5417 htab->do_tls_opt = 1;
5418 return TRUE;
5419 }
5420 \f
5421 /* Find dynamic relocs for H that apply to read-only sections. */
5422
5423 static asection *
5424 readonly_dynrelocs (struct elf_link_hash_entry *h)
5425 {
5426 struct elf_dyn_relocs *p;
5427
5428 for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next)
5429 {
5430 asection *s = p->sec->output_section;
5431
5432 if (s != NULL && (s->flags & SEC_READONLY) != 0)
5433 return p->sec;
5434 }
5435 return NULL;
5436 }
5437
5438 /* Return true if we have dynamic relocs against H or any of its weak
5439 aliases, that apply to read-only sections. Cannot be used after
5440 size_dynamic_sections. */
5441
5442 static bfd_boolean
5443 alias_readonly_dynrelocs (struct elf_link_hash_entry *h)
5444 {
5445 struct ppc_elf_link_hash_entry *eh = ppc_elf_hash_entry (h);
5446 do
5447 {
5448 if (readonly_dynrelocs (&eh->elf))
5449 return TRUE;
5450 eh = ppc_elf_hash_entry (eh->elf.u.alias);
5451 } while (eh != NULL && &eh->elf != h);
5452
5453 return FALSE;
5454 }
5455
5456 /* Return whether H has pc-relative dynamic relocs. */
5457
5458 static bfd_boolean
5459 pc_dynrelocs (struct elf_link_hash_entry *h)
5460 {
5461 struct elf_dyn_relocs *p;
5462
5463 for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next)
5464 if (p->pc_count != 0)
5465 return TRUE;
5466 return FALSE;
5467 }
5468
5469 /* Adjust a symbol defined by a dynamic object and referenced by a
5470 regular object. The current definition is in some section of the
5471 dynamic object, but we're not including those sections. We have to
5472 change the definition to something the rest of the link can
5473 understand. */
5474
5475 static bfd_boolean
5476 ppc_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
5477 struct elf_link_hash_entry *h)
5478 {
5479 struct ppc_elf_link_hash_table *htab;
5480 asection *s;
5481
5482 #ifdef DEBUG
5483 fprintf (stderr, "ppc_elf_adjust_dynamic_symbol called for %s\n",
5484 h->root.root.string);
5485 #endif
5486
5487 /* Make sure we know what is going on here. */
5488 htab = ppc_elf_hash_table (info);
5489 BFD_ASSERT (htab->elf.dynobj != NULL
5490 && (h->needs_plt
5491 || h->type == STT_GNU_IFUNC
5492 || h->is_weakalias
5493 || (h->def_dynamic
5494 && h->ref_regular
5495 && !h->def_regular)));
5496
5497 /* Deal with function syms. */
5498 if (h->type == STT_FUNC
5499 || h->type == STT_GNU_IFUNC
5500 || h->needs_plt)
5501 {
5502 bfd_boolean local = (SYMBOL_CALLS_LOCAL (info, h)
5503 || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h));
5504 /* Discard dyn_relocs when non-pic if we've decided that a
5505 function symbol is local. */
5506 if (!bfd_link_pic (info) && local)
5507 ppc_elf_hash_entry (h)->dyn_relocs = NULL;
5508
5509 /* Clear procedure linkage table information for any symbol that
5510 won't need a .plt entry. */
5511 struct plt_entry *ent;
5512 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
5513 if (ent->plt.refcount > 0)
5514 break;
5515 if (ent == NULL
5516 || (h->type != STT_GNU_IFUNC && local))
5517 {
5518 /* A PLT entry is not required/allowed when:
5519
5520 1. We are not using ld.so; because then the PLT entry
5521 can't be set up, so we can't use one. In this case,
5522 ppc_elf_adjust_dynamic_symbol won't even be called.
5523
5524 2. GC has rendered the entry unused.
5525
5526 3. We know for certain that a call to this symbol
5527 will go to this object, or will remain undefined. */
5528 h->plt.plist = NULL;
5529 h->needs_plt = 0;
5530 h->pointer_equality_needed = 0;
5531 }
5532 else
5533 {
5534 /* Taking a function's address in a read/write section
5535 doesn't require us to define the function symbol in the
5536 executable on a plt call stub. A dynamic reloc can
5537 be used instead, giving better runtime performance.
5538 (Calls via that function pointer don't need to bounce
5539 through the plt call stub.) Similarly, use a dynamic
5540 reloc for a weak reference when possible, allowing the
5541 resolution of the symbol to be set at load time rather
5542 than link time. */
5543 if ((h->pointer_equality_needed
5544 || (h->non_got_ref
5545 && !h->ref_regular_nonweak
5546 && !UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)))
5547 && !htab->is_vxworks
5548 && !ppc_elf_hash_entry (h)->has_sda_refs
5549 && !readonly_dynrelocs (h))
5550 {
5551 h->pointer_equality_needed = 0;
5552 /* If we haven't seen a branch reloc then we don't need
5553 a plt entry. */
5554 if (!h->needs_plt)
5555 h->plt.plist = NULL;
5556 }
5557 else if (!bfd_link_pic (info))
5558 /* We are going to be defining the function symbol on the
5559 plt stub, so no dyn_relocs needed when non-pic. */
5560 ppc_elf_hash_entry (h)->dyn_relocs = NULL;
5561 }
5562 h->protected_def = 0;
5563 /* Function symbols can't have copy relocs. */
5564 return TRUE;
5565 }
5566 else
5567 h->plt.plist = NULL;
5568
5569 /* If this is a weak symbol, and there is a real definition, the
5570 processor independent code will have arranged for us to see the
5571 real definition first, and we can just use the same value. */
5572 if (h->is_weakalias)
5573 {
5574 struct elf_link_hash_entry *def = weakdef (h);
5575 BFD_ASSERT (def->root.type == bfd_link_hash_defined);
5576 h->root.u.def.section = def->root.u.def.section;
5577 h->root.u.def.value = def->root.u.def.value;
5578 if (def->root.u.def.section == htab->elf.sdynbss
5579 || def->root.u.def.section == htab->elf.sdynrelro
5580 || def->root.u.def.section == htab->dynsbss)
5581 ppc_elf_hash_entry (h)->dyn_relocs = NULL;
5582 return TRUE;
5583 }
5584
5585 /* This is a reference to a symbol defined by a dynamic object which
5586 is not a function. */
5587
5588 /* If we are creating a shared library, we must presume that the
5589 only references to the symbol are via the global offset table.
5590 For such cases we need not do anything here; the relocations will
5591 be handled correctly by relocate_section. */
5592 if (bfd_link_pic (info))
5593 {
5594 h->protected_def = 0;
5595 return TRUE;
5596 }
5597
5598 /* If there are no references to this symbol that do not use the
5599 GOT, we don't need to generate a copy reloc. */
5600 if (!h->non_got_ref)
5601 {
5602 h->protected_def = 0;
5603 return TRUE;
5604 }
5605
5606 /* Protected variables do not work with .dynbss. The copy in
5607 .dynbss won't be used by the shared library with the protected
5608 definition for the variable. Editing to PIC, or text relocations
5609 are preferable to an incorrect program. */
5610 if (h->protected_def)
5611 {
5612 if (ELIMINATE_COPY_RELOCS
5613 && ppc_elf_hash_entry (h)->has_addr16_ha
5614 && ppc_elf_hash_entry (h)->has_addr16_lo
5615 && htab->params->pic_fixup == 0
5616 && info->disable_target_specific_optimizations <= 1)
5617 htab->params->pic_fixup = 1;
5618 return TRUE;
5619 }
5620
5621 /* If -z nocopyreloc was given, we won't generate them either. */
5622 if (info->nocopyreloc)
5623 return TRUE;
5624
5625 /* If we don't find any dynamic relocs in read-only sections, then
5626 we'll be keeping the dynamic relocs and avoiding the copy reloc.
5627 We can't do this if there are any small data relocations. This
5628 doesn't work on VxWorks, where we can not have dynamic
5629 relocations (other than copy and jump slot relocations) in an
5630 executable. */
5631 if (ELIMINATE_COPY_RELOCS
5632 && !ppc_elf_hash_entry (h)->has_sda_refs
5633 && !htab->is_vxworks
5634 && !h->def_regular
5635 && !alias_readonly_dynrelocs (h))
5636 return TRUE;
5637
5638 /* We must allocate the symbol in our .dynbss section, which will
5639 become part of the .bss section of the executable. There will be
5640 an entry for this symbol in the .dynsym section. The dynamic
5641 object will contain position independent code, so all references
5642 from the dynamic object to this symbol will go through the global
5643 offset table. The dynamic linker will use the .dynsym entry to
5644 determine the address it must put in the global offset table, so
5645 both the dynamic object and the regular object will refer to the
5646 same memory location for the variable.
5647
5648 Of course, if the symbol is referenced using SDAREL relocs, we
5649 must instead allocate it in .sbss. */
5650 if (ppc_elf_hash_entry (h)->has_sda_refs)
5651 s = htab->dynsbss;
5652 else if ((h->root.u.def.section->flags & SEC_READONLY) != 0)
5653 s = htab->elf.sdynrelro;
5654 else
5655 s = htab->elf.sdynbss;
5656 BFD_ASSERT (s != NULL);
5657
5658 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
5659 {
5660 asection *srel;
5661
5662 /* We must generate a R_PPC_COPY reloc to tell the dynamic
5663 linker to copy the initial value out of the dynamic object
5664 and into the runtime process image. */
5665 if (ppc_elf_hash_entry (h)->has_sda_refs)
5666 srel = htab->relsbss;
5667 else if ((h->root.u.def.section->flags & SEC_READONLY) != 0)
5668 srel = htab->elf.sreldynrelro;
5669 else
5670 srel = htab->elf.srelbss;
5671 BFD_ASSERT (srel != NULL);
5672 srel->size += sizeof (Elf32_External_Rela);
5673 h->needs_copy = 1;
5674 }
5675
5676 /* We no longer want dyn_relocs. */
5677 ppc_elf_hash_entry (h)->dyn_relocs = NULL;
5678 return _bfd_elf_adjust_dynamic_copy (info, h, s);
5679 }
5680 \f
5681 /* Generate a symbol to mark plt call stubs. For non-PIC code the sym is
5682 xxxxxxxx.plt_call32.<callee> where xxxxxxxx is a hex number, usually 0,
5683 specifying the addend on the plt relocation. For -fpic code, the sym
5684 is xxxxxxxx.plt_pic32.<callee>, and for -fPIC
5685 xxxxxxxx.got2.plt_pic32.<callee>. */
5686
5687 static bfd_boolean
5688 add_stub_sym (struct plt_entry *ent,
5689 struct elf_link_hash_entry *h,
5690 struct bfd_link_info *info)
5691 {
5692 struct elf_link_hash_entry *sh;
5693 size_t len1, len2, len3;
5694 char *name;
5695 const char *stub;
5696 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
5697
5698 if (bfd_link_pic (info))
5699 stub = ".plt_pic32.";
5700 else
5701 stub = ".plt_call32.";
5702
5703 len1 = strlen (h->root.root.string);
5704 len2 = strlen (stub);
5705 len3 = 0;
5706 if (ent->sec)
5707 len3 = strlen (ent->sec->name);
5708 name = bfd_malloc (len1 + len2 + len3 + 9);
5709 if (name == NULL)
5710 return FALSE;
5711 sprintf (name, "%08x", (unsigned) ent->addend & 0xffffffff);
5712 if (ent->sec)
5713 memcpy (name + 8, ent->sec->name, len3);
5714 memcpy (name + 8 + len3, stub, len2);
5715 memcpy (name + 8 + len3 + len2, h->root.root.string, len1 + 1);
5716 sh = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
5717 if (sh == NULL)
5718 return FALSE;
5719 if (sh->root.type == bfd_link_hash_new)
5720 {
5721 sh->root.type = bfd_link_hash_defined;
5722 sh->root.u.def.section = htab->glink;
5723 sh->root.u.def.value = ent->glink_offset;
5724 sh->ref_regular = 1;
5725 sh->def_regular = 1;
5726 sh->ref_regular_nonweak = 1;
5727 sh->forced_local = 1;
5728 sh->non_elf = 0;
5729 sh->root.linker_def = 1;
5730 }
5731 return TRUE;
5732 }
5733
5734 /* Allocate NEED contiguous space in .got, and return the offset.
5735 Handles allocation of the got header when crossing 32k. */
5736
5737 static bfd_vma
5738 allocate_got (struct ppc_elf_link_hash_table *htab, unsigned int need)
5739 {
5740 bfd_vma where;
5741 unsigned int max_before_header;
5742
5743 if (htab->plt_type == PLT_VXWORKS)
5744 {
5745 where = htab->elf.sgot->size;
5746 htab->elf.sgot->size += need;
5747 }
5748 else
5749 {
5750 max_before_header = htab->plt_type == PLT_NEW ? 32768 : 32764;
5751 if (need <= htab->got_gap)
5752 {
5753 where = max_before_header - htab->got_gap;
5754 htab->got_gap -= need;
5755 }
5756 else
5757 {
5758 if (htab->elf.sgot->size + need > max_before_header
5759 && htab->elf.sgot->size <= max_before_header)
5760 {
5761 htab->got_gap = max_before_header - htab->elf.sgot->size;
5762 htab->elf.sgot->size = max_before_header + htab->got_header_size;
5763 }
5764 where = htab->elf.sgot->size;
5765 htab->elf.sgot->size += need;
5766 }
5767 }
5768 return where;
5769 }
5770
5771 /* Calculate size of GOT entries for symbol given its TLS_MASK.
5772 TLS_LD is excluded because those go in a special GOT slot. */
5773
5774 static inline unsigned int
5775 got_entries_needed (int tls_mask)
5776 {
5777 unsigned int need;
5778 if ((tls_mask & TLS_TLS) == 0)
5779 need = 4;
5780 else
5781 {
5782 need = 0;
5783 if ((tls_mask & TLS_GD) != 0)
5784 need += 8;
5785 if ((tls_mask & (TLS_TPREL | TLS_TPRELGD)) != 0)
5786 need += 4;
5787 if ((tls_mask & TLS_DTPREL) != 0)
5788 need += 4;
5789 }
5790 return need;
5791 }
5792
5793 /* Calculate size of relocs needed for symbol given its TLS_MASK and
5794 NEEDed GOT entries. KNOWN says a TPREL offset can be calculated at
5795 link time. */
5796
5797 static inline unsigned int
5798 got_relocs_needed (int tls_mask, unsigned int need, bfd_boolean known)
5799 {
5800 /* All the entries we allocated need relocs.
5801 Except IE in executable with a local symbol. We could also omit
5802 the DTPREL reloc on the second word of a GD entry under the same
5803 condition as that for IE, but ld.so needs to differentiate
5804 LD and GD entries. */
5805 if ((tls_mask & (TLS_TPREL | TLS_TPRELGD)) != 0 && known)
5806 need -= 4;
5807 return need * sizeof (Elf32_External_Rela) / 4;
5808 }
5809
5810 /* If H is undefined, make it dynamic if that makes sense. */
5811
5812 static bfd_boolean
5813 ensure_undef_dynamic (struct bfd_link_info *info,
5814 struct elf_link_hash_entry *h)
5815 {
5816 struct elf_link_hash_table *htab = elf_hash_table (info);
5817
5818 if (htab->dynamic_sections_created
5819 && ((info->dynamic_undefined_weak != 0
5820 && h->root.type == bfd_link_hash_undefweak)
5821 || h->root.type == bfd_link_hash_undefined)
5822 && h->dynindx == -1
5823 && !h->forced_local
5824 && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
5825 return bfd_elf_link_record_dynamic_symbol (info, h);
5826 return TRUE;
5827 }
5828
5829 /* Allocate space in associated reloc sections for dynamic relocs. */
5830
5831 static bfd_boolean
5832 allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
5833 {
5834 struct bfd_link_info *info = inf;
5835 struct ppc_elf_link_hash_entry *eh;
5836 struct ppc_elf_link_hash_table *htab;
5837 struct elf_dyn_relocs *p;
5838 bfd_boolean dyn;
5839
5840 if (h->root.type == bfd_link_hash_indirect)
5841 return TRUE;
5842
5843 htab = ppc_elf_hash_table (info);
5844 eh = (struct ppc_elf_link_hash_entry *) h;
5845 if (eh->elf.got.refcount > 0
5846 || (ELIMINATE_COPY_RELOCS
5847 && !eh->elf.def_regular
5848 && eh->elf.protected_def
5849 && eh->has_addr16_ha
5850 && eh->has_addr16_lo
5851 && htab->params->pic_fixup > 0))
5852 {
5853 unsigned int need;
5854
5855 /* Make sure this symbol is output as a dynamic symbol. */
5856 if (!ensure_undef_dynamic (info, &eh->elf))
5857 return FALSE;
5858
5859 need = 0;
5860 if ((eh->tls_mask & TLS_LD) != 0)
5861 {
5862 if (!eh->elf.def_dynamic)
5863 /* We'll just use htab->tlsld_got.offset. This should
5864 always be the case. It's a little odd if we have
5865 a local dynamic reloc against a non-local symbol. */
5866 htab->tlsld_got.refcount += 1;
5867 else
5868 need += 8;
5869 }
5870 need += got_entries_needed (eh->tls_mask);
5871 if (need == 0)
5872 eh->elf.got.offset = (bfd_vma) -1;
5873 else
5874 {
5875 eh->elf.got.offset = allocate_got (htab, need);
5876 if ((bfd_link_pic (info)
5877 || (htab->elf.dynamic_sections_created
5878 && eh->elf.dynindx != -1
5879 && !SYMBOL_REFERENCES_LOCAL (info, &eh->elf)))
5880 && !UNDEFWEAK_NO_DYNAMIC_RELOC (info, &eh->elf))
5881 {
5882 asection *rsec;
5883 bfd_boolean tprel_known = (bfd_link_executable (info)
5884 && SYMBOL_REFERENCES_LOCAL (info,
5885 &eh->elf));
5886
5887 need = got_relocs_needed (eh->tls_mask, need, tprel_known);
5888 if ((eh->tls_mask & TLS_LD) != 0 && eh->elf.def_dynamic)
5889 need -= sizeof (Elf32_External_Rela);
5890 rsec = htab->elf.srelgot;
5891 if (eh->elf.type == STT_GNU_IFUNC)
5892 rsec = htab->elf.irelplt;
5893 rsec->size += need;
5894 }
5895 }
5896 }
5897 else
5898 eh->elf.got.offset = (bfd_vma) -1;
5899
5900 /* If no dynamic sections we can't have dynamic relocs, except for
5901 IFUNCs which are handled even in static executables. */
5902 if (!htab->elf.dynamic_sections_created
5903 && h->type != STT_GNU_IFUNC)
5904 eh->dyn_relocs = NULL;
5905
5906 /* Discard relocs on undefined symbols that must be local. */
5907 else if (h->root.type == bfd_link_hash_undefined
5908 && ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
5909 eh->dyn_relocs = NULL;
5910
5911 /* Also discard relocs on undefined weak syms with non-default
5912 visibility, or when dynamic_undefined_weak says so. */
5913 else if (UNDEFWEAK_NO_DYNAMIC_RELOC (info, h))
5914 eh->dyn_relocs = NULL;
5915
5916 if (eh->dyn_relocs == NULL)
5917 ;
5918
5919 /* In the shared -Bsymbolic case, discard space allocated for
5920 dynamic pc-relative relocs against symbols which turn out to be
5921 defined in regular objects. For the normal shared case, discard
5922 space for relocs that have become local due to symbol visibility
5923 changes. */
5924 else if (bfd_link_pic (info))
5925 {
5926 /* Relocs that use pc_count are those that appear on a call insn,
5927 or certain REL relocs (see must_be_dyn_reloc) that can be
5928 generated via assembly. We want calls to protected symbols to
5929 resolve directly to the function rather than going via the plt.
5930 If people want function pointer comparisons to work as expected
5931 then they should avoid writing weird assembly. */
5932 if (SYMBOL_CALLS_LOCAL (info, h))
5933 {
5934 struct elf_dyn_relocs **pp;
5935
5936 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
5937 {
5938 p->count -= p->pc_count;
5939 p->pc_count = 0;
5940 if (p->count == 0)
5941 *pp = p->next;
5942 else
5943 pp = &p->next;
5944 }
5945 }
5946
5947 if (htab->is_vxworks)
5948 {
5949 struct elf_dyn_relocs **pp;
5950
5951 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
5952 {
5953 if (strcmp (p->sec->output_section->name, ".tls_vars") == 0)
5954 *pp = p->next;
5955 else
5956 pp = &p->next;
5957 }
5958 }
5959
5960 if (eh->dyn_relocs != NULL)
5961 {
5962 /* Make sure this symbol is output as a dynamic symbol. */
5963 if (!ensure_undef_dynamic (info, h))
5964 return FALSE;
5965 }
5966 }
5967 else if (ELIMINATE_COPY_RELOCS)
5968 {
5969 /* For the non-pic case, discard space for relocs against
5970 symbols which turn out to need copy relocs or are not
5971 dynamic. */
5972 if (h->dynamic_adjusted
5973 && !h->def_regular
5974 && !ELF_COMMON_DEF_P (h)
5975 && !(h->protected_def
5976 && eh->has_addr16_ha
5977 && eh->has_addr16_lo
5978 && htab->params->pic_fixup > 0))
5979 {
5980 /* Make sure this symbol is output as a dynamic symbol. */
5981 if (!ensure_undef_dynamic (info, h))
5982 return FALSE;
5983
5984 if (h->dynindx == -1)
5985 eh->dyn_relocs = NULL;
5986 }
5987 else
5988 eh->dyn_relocs = NULL;
5989 }
5990
5991 /* Allocate space. */
5992 for (p = eh->dyn_relocs; p != NULL; p = p->next)
5993 {
5994 asection *sreloc = elf_section_data (p->sec)->sreloc;
5995 if (eh->elf.type == STT_GNU_IFUNC)
5996 sreloc = htab->elf.irelplt;
5997 sreloc->size += p->count * sizeof (Elf32_External_Rela);
5998 }
5999
6000 /* Handle PLT relocs. Done last, after dynindx has settled. */
6001 dyn = htab->elf.dynamic_sections_created && h->dynindx != -1;
6002 if (dyn || h->type == STT_GNU_IFUNC)
6003 {
6004 struct plt_entry *ent;
6005 bfd_boolean doneone = FALSE;
6006 bfd_vma plt_offset = 0, glink_offset = 0;
6007
6008 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
6009 if (ent->plt.refcount > 0)
6010 {
6011 asection *s = htab->elf.splt;
6012
6013 if (!dyn)
6014 s = htab->elf.iplt;
6015
6016 if (htab->plt_type == PLT_NEW || !dyn)
6017 {
6018 if (!doneone)
6019 {
6020 plt_offset = s->size;
6021 s->size += 4;
6022 }
6023 ent->plt.offset = plt_offset;
6024
6025 s = htab->glink;
6026 if (!doneone || bfd_link_pic (info))
6027 {
6028 glink_offset = s->size;
6029 s->size += GLINK_ENTRY_SIZE (htab, h);
6030 }
6031 if (!doneone
6032 && !bfd_link_pic (info)
6033 && h->def_dynamic
6034 && !h->def_regular)
6035 {
6036 h->root.u.def.section = s;
6037 h->root.u.def.value = glink_offset;
6038 }
6039 ent->glink_offset = glink_offset;
6040
6041 if (htab->params->emit_stub_syms
6042 && !add_stub_sym (ent, h, info))
6043 return FALSE;
6044 }
6045 else
6046 {
6047 if (!doneone)
6048 {
6049 /* If this is the first .plt entry, make room
6050 for the special first entry. */
6051 if (s->size == 0)
6052 s->size += htab->plt_initial_entry_size;
6053
6054 /* The PowerPC PLT is actually composed of two
6055 parts, the first part is 2 words (for a load
6056 and a jump), and then there is a remaining
6057 word available at the end. */
6058 plt_offset = (htab->plt_initial_entry_size
6059 + (htab->plt_slot_size
6060 * ((s->size
6061 - htab->plt_initial_entry_size)
6062 / htab->plt_entry_size)));
6063
6064 /* If this symbol is not defined in a regular
6065 file, and we are not generating a shared
6066 library, then set the symbol to this location
6067 in the .plt. This is to avoid text
6068 relocations, and is required to make
6069 function pointers compare as equal between
6070 the normal executable and the shared library. */
6071 if (! bfd_link_pic (info)
6072 && h->def_dynamic
6073 && !h->def_regular)
6074 {
6075 h->root.u.def.section = s;
6076 h->root.u.def.value = plt_offset;
6077 }
6078
6079 /* Make room for this entry. */
6080 s->size += htab->plt_entry_size;
6081 /* After the 8192nd entry, room for two entries
6082 is allocated. */
6083 if (htab->plt_type == PLT_OLD
6084 && (s->size - htab->plt_initial_entry_size)
6085 / htab->plt_entry_size
6086 > PLT_NUM_SINGLE_ENTRIES)
6087 s->size += htab->plt_entry_size;
6088 }
6089 ent->plt.offset = plt_offset;
6090 }
6091
6092 /* We also need to make an entry in the .rela.plt section. */
6093 if (!doneone)
6094 {
6095 if (!dyn)
6096 htab->elf.irelplt->size += sizeof (Elf32_External_Rela);
6097 else
6098 {
6099 htab->elf.srelplt->size += sizeof (Elf32_External_Rela);
6100
6101 if (htab->plt_type == PLT_VXWORKS)
6102 {
6103 /* Allocate space for the unloaded relocations. */
6104 if (!bfd_link_pic (info)
6105 && htab->elf.dynamic_sections_created)
6106 {
6107 if (ent->plt.offset
6108 == (bfd_vma) htab->plt_initial_entry_size)
6109 {
6110 htab->srelplt2->size
6111 += (sizeof (Elf32_External_Rela)
6112 * VXWORKS_PLTRESOLVE_RELOCS);
6113 }
6114
6115 htab->srelplt2->size
6116 += (sizeof (Elf32_External_Rela)
6117 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS);
6118 }
6119
6120 /* Every PLT entry has an associated GOT entry in
6121 .got.plt. */
6122 htab->elf.sgotplt->size += 4;
6123 }
6124 }
6125 doneone = TRUE;
6126 }
6127 }
6128 else
6129 ent->plt.offset = (bfd_vma) -1;
6130
6131 if (!doneone)
6132 {
6133 h->plt.plist = NULL;
6134 h->needs_plt = 0;
6135 }
6136 }
6137 else
6138 {
6139 h->plt.plist = NULL;
6140 h->needs_plt = 0;
6141 }
6142
6143 return TRUE;
6144 }
6145
6146 /* Set DF_TEXTREL if we find any dynamic relocs that apply to
6147 read-only sections. */
6148
6149 static bfd_boolean
6150 maybe_set_textrel (struct elf_link_hash_entry *h, void *info_p)
6151 {
6152 asection *sec;
6153
6154 if (h->root.type == bfd_link_hash_indirect)
6155 return TRUE;
6156
6157 sec = readonly_dynrelocs (h);
6158 if (sec != NULL)
6159 {
6160 struct bfd_link_info *info = (struct bfd_link_info *) info_p;
6161
6162 info->flags |= DF_TEXTREL;
6163 info->callbacks->minfo
6164 (_("%B: dynamic relocation against `%T' in read-only section `%A'\n"),
6165 sec->owner, h->root.root.string, sec);
6166
6167 /* Not an error, just cut short the traversal. */
6168 return FALSE;
6169 }
6170 return TRUE;
6171 }
6172
6173 static const unsigned char glink_eh_frame_cie[] =
6174 {
6175 0, 0, 0, 16, /* length. */
6176 0, 0, 0, 0, /* id. */
6177 1, /* CIE version. */
6178 'z', 'R', 0, /* Augmentation string. */
6179 4, /* Code alignment. */
6180 0x7c, /* Data alignment. */
6181 65, /* RA reg. */
6182 1, /* Augmentation size. */
6183 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding. */
6184 DW_CFA_def_cfa, 1, 0 /* def_cfa: r1 offset 0. */
6185 };
6186
6187 /* Set the sizes of the dynamic sections. */
6188
6189 static bfd_boolean
6190 ppc_elf_size_dynamic_sections (bfd *output_bfd,
6191 struct bfd_link_info *info)
6192 {
6193 struct ppc_elf_link_hash_table *htab;
6194 asection *s;
6195 bfd_boolean relocs;
6196 bfd *ibfd;
6197
6198 #ifdef DEBUG
6199 fprintf (stderr, "ppc_elf_size_dynamic_sections called\n");
6200 #endif
6201
6202 htab = ppc_elf_hash_table (info);
6203 BFD_ASSERT (htab->elf.dynobj != NULL);
6204
6205 if (elf_hash_table (info)->dynamic_sections_created)
6206 {
6207 /* Set the contents of the .interp section to the interpreter. */
6208 if (bfd_link_executable (info) && !info->nointerp)
6209 {
6210 s = bfd_get_linker_section (htab->elf.dynobj, ".interp");
6211 BFD_ASSERT (s != NULL);
6212 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
6213 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
6214 }
6215 }
6216
6217 if (htab->plt_type == PLT_OLD)
6218 htab->got_header_size = 16;
6219 else if (htab->plt_type == PLT_NEW)
6220 htab->got_header_size = 12;
6221
6222 /* Set up .got offsets for local syms, and space for local dynamic
6223 relocs. */
6224 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
6225 {
6226 bfd_signed_vma *local_got;
6227 bfd_signed_vma *end_local_got;
6228 struct plt_entry **local_plt;
6229 struct plt_entry **end_local_plt;
6230 char *lgot_masks;
6231 bfd_size_type locsymcount;
6232 Elf_Internal_Shdr *symtab_hdr;
6233
6234 if (!is_ppc_elf (ibfd))
6235 continue;
6236
6237 for (s = ibfd->sections; s != NULL; s = s->next)
6238 {
6239 struct ppc_dyn_relocs *p;
6240
6241 for (p = ((struct ppc_dyn_relocs *)
6242 elf_section_data (s)->local_dynrel);
6243 p != NULL;
6244 p = p->next)
6245 {
6246 if (!bfd_is_abs_section (p->sec)
6247 && bfd_is_abs_section (p->sec->output_section))
6248 {
6249 /* Input section has been discarded, either because
6250 it is a copy of a linkonce section or due to
6251 linker script /DISCARD/, so we'll be discarding
6252 the relocs too. */
6253 }
6254 else if (htab->is_vxworks
6255 && strcmp (p->sec->output_section->name,
6256 ".tls_vars") == 0)
6257 {
6258 /* Relocations in vxworks .tls_vars sections are
6259 handled specially by the loader. */
6260 }
6261 else if (p->count != 0)
6262 {
6263 asection *sreloc = elf_section_data (p->sec)->sreloc;
6264 if (p->ifunc)
6265 sreloc = htab->elf.irelplt;
6266 sreloc->size += p->count * sizeof (Elf32_External_Rela);
6267 if ((p->sec->output_section->flags
6268 & (SEC_READONLY | SEC_ALLOC))
6269 == (SEC_READONLY | SEC_ALLOC))
6270 {
6271 info->flags |= DF_TEXTREL;
6272 info->callbacks->minfo (_("%B: dynamic relocation in read-only section `%A'\n"),
6273 p->sec->owner, p->sec);
6274 }
6275 }
6276 }
6277 }
6278
6279 local_got = elf_local_got_refcounts (ibfd);
6280 if (!local_got)
6281 continue;
6282
6283 symtab_hdr = &elf_symtab_hdr (ibfd);
6284 locsymcount = symtab_hdr->sh_info;
6285 end_local_got = local_got + locsymcount;
6286 local_plt = (struct plt_entry **) end_local_got;
6287 end_local_plt = local_plt + locsymcount;
6288 lgot_masks = (char *) end_local_plt;
6289
6290 for (; local_got < end_local_got; ++local_got, ++lgot_masks)
6291 if (*local_got > 0)
6292 {
6293 unsigned int need;
6294 if ((*lgot_masks & TLS_LD) != 0)
6295 htab->tlsld_got.refcount += 1;
6296 need = got_entries_needed (*lgot_masks);
6297 if (need == 0)
6298 *local_got = (bfd_vma) -1;
6299 else
6300 {
6301 *local_got = allocate_got (htab, need);
6302 if (bfd_link_pic (info))
6303 {
6304 asection *srel;
6305 bfd_boolean tprel_known = bfd_link_executable (info);
6306
6307 need = got_relocs_needed (*lgot_masks, need, tprel_known);
6308 srel = htab->elf.srelgot;
6309 if ((*lgot_masks & PLT_IFUNC) != 0)
6310 srel = htab->elf.irelplt;
6311 srel->size += need;
6312 }
6313 }
6314 }
6315 else
6316 *local_got = (bfd_vma) -1;
6317
6318 if (htab->is_vxworks)
6319 continue;
6320
6321 /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */
6322 for (; local_plt < end_local_plt; ++local_plt)
6323 {
6324 struct plt_entry *ent;
6325 bfd_boolean doneone = FALSE;
6326 bfd_vma plt_offset = 0, glink_offset = 0;
6327
6328 for (ent = *local_plt; ent != NULL; ent = ent->next)
6329 if (ent->plt.refcount > 0)
6330 {
6331 s = htab->elf.iplt;
6332
6333 if (!doneone)
6334 {
6335 plt_offset = s->size;
6336 s->size += 4;
6337 }
6338 ent->plt.offset = plt_offset;
6339
6340 s = htab->glink;
6341 if (!doneone || bfd_link_pic (info))
6342 {
6343 glink_offset = s->size;
6344 s->size += GLINK_ENTRY_SIZE (htab, NULL);
6345 }
6346 ent->glink_offset = glink_offset;
6347
6348 if (!doneone)
6349 {
6350 htab->elf.irelplt->size += sizeof (Elf32_External_Rela);
6351 doneone = TRUE;
6352 }
6353 }
6354 else
6355 ent->plt.offset = (bfd_vma) -1;
6356 }
6357 }
6358
6359 /* Allocate space for global sym dynamic relocs. */
6360 elf_link_hash_traverse (elf_hash_table (info), allocate_dynrelocs, info);
6361
6362 if (htab->tlsld_got.refcount > 0)
6363 {
6364 htab->tlsld_got.offset = allocate_got (htab, 8);
6365 if (bfd_link_pic (info))
6366 htab->elf.srelgot->size += sizeof (Elf32_External_Rela);
6367 }
6368 else
6369 htab->tlsld_got.offset = (bfd_vma) -1;
6370
6371 if (htab->elf.sgot != NULL && htab->plt_type != PLT_VXWORKS)
6372 {
6373 unsigned int g_o_t = 32768;
6374
6375 /* If we haven't allocated the header, do so now. When we get here,
6376 for old plt/got the got size will be 0 to 32764 (not allocated),
6377 or 32780 to 65536 (header allocated). For new plt/got, the
6378 corresponding ranges are 0 to 32768 and 32780 to 65536. */
6379 if (htab->elf.sgot->size <= 32768)
6380 {
6381 g_o_t = htab->elf.sgot->size;
6382 if (htab->plt_type == PLT_OLD)
6383 g_o_t += 4;
6384 htab->elf.sgot->size += htab->got_header_size;
6385 }
6386
6387 htab->elf.hgot->root.u.def.value = g_o_t;
6388 }
6389 if (bfd_link_pic (info))
6390 {
6391 struct elf_link_hash_entry *sda = htab->sdata[0].sym;
6392
6393 sda->root.u.def.section = htab->elf.hgot->root.u.def.section;
6394 sda->root.u.def.value = htab->elf.hgot->root.u.def.value;
6395 }
6396 if (info->emitrelocations)
6397 {
6398 struct elf_link_hash_entry *sda = htab->sdata[0].sym;
6399
6400 if (sda != NULL && sda->ref_regular)
6401 sda->root.u.def.section->flags |= SEC_KEEP;
6402 sda = htab->sdata[1].sym;
6403 if (sda != NULL && sda->ref_regular)
6404 sda->root.u.def.section->flags |= SEC_KEEP;
6405 }
6406
6407 if (htab->glink != NULL
6408 && htab->glink->size != 0
6409 && htab->elf.dynamic_sections_created)
6410 {
6411 htab->glink_pltresolve = htab->glink->size;
6412 /* Space for the branch table. */
6413 htab->glink->size
6414 += htab->elf.srelplt->size / (sizeof (Elf32_External_Rela) / 4) - 4;
6415 /* Pad out to align the start of PLTresolve. */
6416 htab->glink->size += -htab->glink->size & (htab->params->ppc476_workaround
6417 ? 63 : 15);
6418 htab->glink->size += GLINK_PLTRESOLVE;
6419
6420 if (htab->params->emit_stub_syms)
6421 {
6422 struct elf_link_hash_entry *sh;
6423 sh = elf_link_hash_lookup (&htab->elf, "__glink",
6424 TRUE, FALSE, FALSE);
6425 if (sh == NULL)
6426 return FALSE;
6427 if (sh->root.type == bfd_link_hash_new)
6428 {
6429 sh->root.type = bfd_link_hash_defined;
6430 sh->root.u.def.section = htab->glink;
6431 sh->root.u.def.value = htab->glink_pltresolve;
6432 sh->ref_regular = 1;
6433 sh->def_regular = 1;
6434 sh->ref_regular_nonweak = 1;
6435 sh->forced_local = 1;
6436 sh->non_elf = 0;
6437 sh->root.linker_def = 1;
6438 }
6439 sh = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve",
6440 TRUE, FALSE, FALSE);
6441 if (sh == NULL)
6442 return FALSE;
6443 if (sh->root.type == bfd_link_hash_new)
6444 {
6445 sh->root.type = bfd_link_hash_defined;
6446 sh->root.u.def.section = htab->glink;
6447 sh->root.u.def.value = htab->glink->size - GLINK_PLTRESOLVE;
6448 sh->ref_regular = 1;
6449 sh->def_regular = 1;
6450 sh->ref_regular_nonweak = 1;
6451 sh->forced_local = 1;
6452 sh->non_elf = 0;
6453 sh->root.linker_def = 1;
6454 }
6455 }
6456 }
6457
6458 if (htab->glink != NULL
6459 && htab->glink->size != 0
6460 && htab->glink_eh_frame != NULL
6461 && !bfd_is_abs_section (htab->glink_eh_frame->output_section)
6462 && _bfd_elf_eh_frame_present (info))
6463 {
6464 s = htab->glink_eh_frame;
6465 s->size = sizeof (glink_eh_frame_cie) + 20;
6466 if (bfd_link_pic (info))
6467 {
6468 s->size += 4;
6469 if (htab->glink->size - GLINK_PLTRESOLVE + 8 >= 256)
6470 s->size += 4;
6471 }
6472 }
6473
6474 /* We've now determined the sizes of the various dynamic sections.
6475 Allocate memory for them. */
6476 relocs = FALSE;
6477 for (s = htab->elf.dynobj->sections; s != NULL; s = s->next)
6478 {
6479 bfd_boolean strip_section = TRUE;
6480
6481 if ((s->flags & SEC_LINKER_CREATED) == 0)
6482 continue;
6483
6484 if (s == htab->elf.splt
6485 || s == htab->elf.sgot)
6486 {
6487 /* We'd like to strip these sections if they aren't needed, but if
6488 we've exported dynamic symbols from them we must leave them.
6489 It's too late to tell BFD to get rid of the symbols. */
6490 if (htab->elf.hplt != NULL)
6491 strip_section = FALSE;
6492 /* Strip this section if we don't need it; see the
6493 comment below. */
6494 }
6495 else if (s == htab->elf.iplt
6496 || s == htab->glink
6497 || s == htab->glink_eh_frame
6498 || s == htab->elf.sgotplt
6499 || s == htab->sbss
6500 || s == htab->elf.sdynbss
6501 || s == htab->elf.sdynrelro
6502 || s == htab->dynsbss)
6503 {
6504 /* Strip these too. */
6505 }
6506 else if (s == htab->sdata[0].section
6507 || s == htab->sdata[1].section)
6508 {
6509 strip_section = (s->flags & SEC_KEEP) == 0;
6510 }
6511 else if (CONST_STRNEQ (bfd_get_section_name (htab->elf.dynobj, s),
6512 ".rela"))
6513 {
6514 if (s->size != 0)
6515 {
6516 /* Remember whether there are any relocation sections. */
6517 relocs = TRUE;
6518
6519 /* We use the reloc_count field as a counter if we need
6520 to copy relocs into the output file. */
6521 s->reloc_count = 0;
6522 }
6523 }
6524 else
6525 {
6526 /* It's not one of our sections, so don't allocate space. */
6527 continue;
6528 }
6529
6530 if (s->size == 0 && strip_section)
6531 {
6532 /* If we don't need this section, strip it from the
6533 output file. This is mostly to handle .rela.bss and
6534 .rela.plt. We must create both sections in
6535 create_dynamic_sections, because they must be created
6536 before the linker maps input sections to output
6537 sections. The linker does that before
6538 adjust_dynamic_symbol is called, and it is that
6539 function which decides whether anything needs to go
6540 into these sections. */
6541 s->flags |= SEC_EXCLUDE;
6542 continue;
6543 }
6544
6545 if ((s->flags & SEC_HAS_CONTENTS) == 0)
6546 continue;
6547
6548 /* Allocate memory for the section contents. */
6549 s->contents = bfd_zalloc (htab->elf.dynobj, s->size);
6550 if (s->contents == NULL)
6551 return FALSE;
6552 }
6553
6554 if (htab->elf.dynamic_sections_created)
6555 {
6556 /* Add some entries to the .dynamic section. We fill in the
6557 values later, in ppc_elf_finish_dynamic_sections, but we
6558 must add the entries now so that we get the correct size for
6559 the .dynamic section. The DT_DEBUG entry is filled in by the
6560 dynamic linker and used by the debugger. */
6561 #define add_dynamic_entry(TAG, VAL) \
6562 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
6563
6564 if (bfd_link_executable (info))
6565 {
6566 if (!add_dynamic_entry (DT_DEBUG, 0))
6567 return FALSE;
6568 }
6569
6570 if (htab->elf.splt != NULL && htab->elf.splt->size != 0)
6571 {
6572 if (!add_dynamic_entry (DT_PLTGOT, 0)
6573 || !add_dynamic_entry (DT_PLTRELSZ, 0)
6574 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
6575 || !add_dynamic_entry (DT_JMPREL, 0))
6576 return FALSE;
6577 }
6578
6579 if (htab->plt_type == PLT_NEW
6580 && htab->glink != NULL
6581 && htab->glink->size != 0)
6582 {
6583 if (!add_dynamic_entry (DT_PPC_GOT, 0))
6584 return FALSE;
6585 if (!htab->params->no_tls_get_addr_opt
6586 && htab->tls_get_addr != NULL
6587 && htab->tls_get_addr->plt.plist != NULL
6588 && !add_dynamic_entry (DT_PPC_OPT, PPC_OPT_TLS))
6589 return FALSE;
6590 }
6591
6592 if (relocs)
6593 {
6594 if (!add_dynamic_entry (DT_RELA, 0)
6595 || !add_dynamic_entry (DT_RELASZ, 0)
6596 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
6597 return FALSE;
6598 }
6599
6600 /* If any dynamic relocs apply to a read-only section, then we
6601 need a DT_TEXTREL entry. */
6602 if ((info->flags & DF_TEXTREL) == 0)
6603 elf_link_hash_traverse (elf_hash_table (info), maybe_set_textrel,
6604 info);
6605
6606 if ((info->flags & DF_TEXTREL) != 0)
6607 {
6608 if (!add_dynamic_entry (DT_TEXTREL, 0))
6609 return FALSE;
6610 }
6611 if (htab->is_vxworks
6612 && !elf_vxworks_add_dynamic_entries (output_bfd, info))
6613 return FALSE;
6614 }
6615 #undef add_dynamic_entry
6616
6617 if (htab->glink_eh_frame != NULL
6618 && htab->glink_eh_frame->contents != NULL)
6619 {
6620 unsigned char *p = htab->glink_eh_frame->contents;
6621 bfd_vma val;
6622
6623 memcpy (p, glink_eh_frame_cie, sizeof (glink_eh_frame_cie));
6624 /* CIE length (rewrite in case little-endian). */
6625 bfd_put_32 (htab->elf.dynobj, sizeof (glink_eh_frame_cie) - 4, p);
6626 p += sizeof (glink_eh_frame_cie);
6627 /* FDE length. */
6628 val = htab->glink_eh_frame->size - 4 - sizeof (glink_eh_frame_cie);
6629 bfd_put_32 (htab->elf.dynobj, val, p);
6630 p += 4;
6631 /* CIE pointer. */
6632 val = p - htab->glink_eh_frame->contents;
6633 bfd_put_32 (htab->elf.dynobj, val, p);
6634 p += 4;
6635 /* Offset to .glink. Set later. */
6636 p += 4;
6637 /* .glink size. */
6638 bfd_put_32 (htab->elf.dynobj, htab->glink->size, p);
6639 p += 4;
6640 /* Augmentation. */
6641 p += 1;
6642
6643 if (bfd_link_pic (info)
6644 && htab->elf.dynamic_sections_created)
6645 {
6646 bfd_vma adv = (htab->glink->size - GLINK_PLTRESOLVE + 8) >> 2;
6647 if (adv < 64)
6648 *p++ = DW_CFA_advance_loc + adv;
6649 else if (adv < 256)
6650 {
6651 *p++ = DW_CFA_advance_loc1;
6652 *p++ = adv;
6653 }
6654 else if (adv < 65536)
6655 {
6656 *p++ = DW_CFA_advance_loc2;
6657 bfd_put_16 (htab->elf.dynobj, adv, p);
6658 p += 2;
6659 }
6660 else
6661 {
6662 *p++ = DW_CFA_advance_loc4;
6663 bfd_put_32 (htab->elf.dynobj, adv, p);
6664 p += 4;
6665 }
6666 *p++ = DW_CFA_register;
6667 *p++ = 65;
6668 p++;
6669 *p++ = DW_CFA_advance_loc + 4;
6670 *p++ = DW_CFA_restore_extended;
6671 *p++ = 65;
6672 }
6673 BFD_ASSERT ((bfd_vma) ((p + 3 - htab->glink_eh_frame->contents) & -4)
6674 == htab->glink_eh_frame->size);
6675 }
6676
6677 return TRUE;
6678 }
6679
6680 /* Arrange to have _SDA_BASE_ or _SDA2_BASE_ stripped from the output
6681 if it looks like nothing is using them. */
6682
6683 static void
6684 maybe_strip_sdasym (bfd *output_bfd, elf_linker_section_t *lsect)
6685 {
6686 struct elf_link_hash_entry *sda = lsect->sym;
6687
6688 if (sda != NULL && !sda->ref_regular && sda->dynindx == -1)
6689 {
6690 asection *s;
6691
6692 s = bfd_get_section_by_name (output_bfd, lsect->name);
6693 if (s == NULL || bfd_section_removed_from_list (output_bfd, s))
6694 {
6695 s = bfd_get_section_by_name (output_bfd, lsect->bss_name);
6696 if (s == NULL || bfd_section_removed_from_list (output_bfd, s))
6697 {
6698 sda->def_regular = 0;
6699 /* This is somewhat magic. See elf_link_output_extsym. */
6700 sda->ref_dynamic = 1;
6701 sda->forced_local = 0;
6702 }
6703 }
6704 }
6705 }
6706
6707 void
6708 ppc_elf_maybe_strip_sdata_syms (struct bfd_link_info *info)
6709 {
6710 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
6711
6712 if (htab != NULL)
6713 {
6714 maybe_strip_sdasym (info->output_bfd, &htab->sdata[0]);
6715 maybe_strip_sdasym (info->output_bfd, &htab->sdata[1]);
6716 }
6717 }
6718
6719
6720 /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
6721
6722 static bfd_boolean
6723 ppc_elf_hash_symbol (struct elf_link_hash_entry *h)
6724 {
6725 if (h->plt.plist != NULL
6726 && !h->def_regular
6727 && (!h->pointer_equality_needed
6728 || !h->ref_regular_nonweak))
6729 return FALSE;
6730
6731 return _bfd_elf_hash_symbol (h);
6732 }
6733 \f
6734 #define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0]))
6735
6736 /* Relaxation trampolines. r12 is available for clobbering (r11, is
6737 used for some functions that are allowed to break the ABI). */
6738 static const int shared_stub_entry[] =
6739 {
6740 0x7c0802a6, /* mflr 0 */
6741 0x429f0005, /* bcl 20, 31, .Lxxx */
6742 0x7d8802a6, /* mflr 12 */
6743 0x3d8c0000, /* addis 12, 12, (xxx-.Lxxx)@ha */
6744 0x398c0000, /* addi 12, 12, (xxx-.Lxxx)@l */
6745 0x7c0803a6, /* mtlr 0 */
6746 0x7d8903a6, /* mtctr 12 */
6747 0x4e800420, /* bctr */
6748 };
6749
6750 static const int stub_entry[] =
6751 {
6752 0x3d800000, /* lis 12,xxx@ha */
6753 0x398c0000, /* addi 12,12,xxx@l */
6754 0x7d8903a6, /* mtctr 12 */
6755 0x4e800420, /* bctr */
6756 };
6757
6758 struct ppc_elf_relax_info
6759 {
6760 unsigned int workaround_size;
6761 unsigned int picfixup_size;
6762 };
6763
6764 /* This function implements long branch trampolines, and the ppc476
6765 icache bug workaround. Any section needing trampolines or patch
6766 space for the workaround has its size extended so that we can
6767 add trampolines at the end of the section. */
6768
6769 static bfd_boolean
6770 ppc_elf_relax_section (bfd *abfd,
6771 asection *isec,
6772 struct bfd_link_info *link_info,
6773 bfd_boolean *again)
6774 {
6775 struct one_branch_fixup
6776 {
6777 struct one_branch_fixup *next;
6778 asection *tsec;
6779 /* Final link, can use the symbol offset. For a
6780 relocatable link we use the symbol's index. */
6781 bfd_vma toff;
6782 bfd_vma trampoff;
6783 };
6784
6785 Elf_Internal_Shdr *symtab_hdr;
6786 bfd_byte *contents = NULL;
6787 Elf_Internal_Sym *isymbuf = NULL;
6788 Elf_Internal_Rela *internal_relocs = NULL;
6789 Elf_Internal_Rela *irel, *irelend = NULL;
6790 struct one_branch_fixup *branch_fixups = NULL;
6791 struct ppc_elf_relax_info *relax_info = NULL;
6792 unsigned changes = 0;
6793 bfd_boolean workaround_change;
6794 struct ppc_elf_link_hash_table *htab;
6795 bfd_size_type trampbase, trampoff, newsize, picfixup_size;
6796 asection *got2;
6797 bfd_boolean maybe_pasted;
6798
6799 *again = FALSE;
6800
6801 /* No need to do anything with non-alloc or non-code sections. */
6802 if ((isec->flags & SEC_ALLOC) == 0
6803 || (isec->flags & SEC_CODE) == 0
6804 || (isec->flags & SEC_LINKER_CREATED) != 0
6805 || isec->size < 4)
6806 return TRUE;
6807
6808 /* We cannot represent the required PIC relocs in the output, so don't
6809 do anything. The linker doesn't support mixing -shared and -r
6810 anyway. */
6811 if (bfd_link_relocatable (link_info) && bfd_link_pic (link_info))
6812 return TRUE;
6813
6814 htab = ppc_elf_hash_table (link_info);
6815 if (htab == NULL)
6816 return TRUE;
6817
6818 isec->size = (isec->size + 3) & -4;
6819 if (isec->rawsize == 0)
6820 isec->rawsize = isec->size;
6821 trampbase = isec->size;
6822
6823 BFD_ASSERT (isec->sec_info_type == SEC_INFO_TYPE_NONE
6824 || isec->sec_info_type == SEC_INFO_TYPE_TARGET);
6825 isec->sec_info_type = SEC_INFO_TYPE_TARGET;
6826
6827 if (htab->params->ppc476_workaround
6828 || htab->params->pic_fixup > 0)
6829 {
6830 if (elf_section_data (isec)->sec_info == NULL)
6831 {
6832 elf_section_data (isec)->sec_info
6833 = bfd_zalloc (abfd, sizeof (struct ppc_elf_relax_info));
6834 if (elf_section_data (isec)->sec_info == NULL)
6835 return FALSE;
6836 }
6837 relax_info = elf_section_data (isec)->sec_info;
6838 trampbase -= relax_info->workaround_size;
6839 }
6840
6841 maybe_pasted = (strcmp (isec->output_section->name, ".init") == 0
6842 || strcmp (isec->output_section->name, ".fini") == 0);
6843 /* Space for a branch around any trampolines. */
6844 trampoff = trampbase;
6845 if (maybe_pasted && trampbase == isec->rawsize)
6846 trampoff += 4;
6847
6848 symtab_hdr = &elf_symtab_hdr (abfd);
6849 picfixup_size = 0;
6850 if (htab->params->branch_trampolines
6851 || htab->params->pic_fixup > 0)
6852 {
6853 /* Get a copy of the native relocations. */
6854 if (isec->reloc_count != 0)
6855 {
6856 internal_relocs = _bfd_elf_link_read_relocs (abfd, isec, NULL, NULL,
6857 link_info->keep_memory);
6858 if (internal_relocs == NULL)
6859 goto error_return;
6860 }
6861
6862 got2 = bfd_get_section_by_name (abfd, ".got2");
6863
6864 irelend = internal_relocs + isec->reloc_count;
6865 for (irel = internal_relocs; irel < irelend; irel++)
6866 {
6867 unsigned long r_type = ELF32_R_TYPE (irel->r_info);
6868 bfd_vma toff, roff;
6869 asection *tsec;
6870 struct one_branch_fixup *f;
6871 size_t insn_offset = 0;
6872 bfd_vma max_branch_offset = 0, val;
6873 bfd_byte *hit_addr;
6874 unsigned long t0;
6875 struct elf_link_hash_entry *h;
6876 struct plt_entry **plist;
6877 unsigned char sym_type;
6878
6879 switch (r_type)
6880 {
6881 case R_PPC_REL24:
6882 case R_PPC_LOCAL24PC:
6883 case R_PPC_PLTREL24:
6884 max_branch_offset = 1 << 25;
6885 break;
6886
6887 case R_PPC_REL14:
6888 case R_PPC_REL14_BRTAKEN:
6889 case R_PPC_REL14_BRNTAKEN:
6890 max_branch_offset = 1 << 15;
6891 break;
6892
6893 case R_PPC_ADDR16_HA:
6894 if (htab->params->pic_fixup > 0)
6895 break;
6896 continue;
6897
6898 default:
6899 continue;
6900 }
6901
6902 /* Get the value of the symbol referred to by the reloc. */
6903 h = NULL;
6904 if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
6905 {
6906 /* A local symbol. */
6907 Elf_Internal_Sym *isym;
6908
6909 /* Read this BFD's local symbols. */
6910 if (isymbuf == NULL)
6911 {
6912 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
6913 if (isymbuf == NULL)
6914 isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
6915 symtab_hdr->sh_info, 0,
6916 NULL, NULL, NULL);
6917 if (isymbuf == 0)
6918 goto error_return;
6919 }
6920 isym = isymbuf + ELF32_R_SYM (irel->r_info);
6921 if (isym->st_shndx == SHN_UNDEF)
6922 tsec = bfd_und_section_ptr;
6923 else if (isym->st_shndx == SHN_ABS)
6924 tsec = bfd_abs_section_ptr;
6925 else if (isym->st_shndx == SHN_COMMON)
6926 tsec = bfd_com_section_ptr;
6927 else
6928 tsec = bfd_section_from_elf_index (abfd, isym->st_shndx);
6929
6930 toff = isym->st_value;
6931 sym_type = ELF_ST_TYPE (isym->st_info);
6932 }
6933 else
6934 {
6935 /* Global symbol handling. */
6936 unsigned long indx;
6937
6938 indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
6939 h = elf_sym_hashes (abfd)[indx];
6940
6941 while (h->root.type == bfd_link_hash_indirect
6942 || h->root.type == bfd_link_hash_warning)
6943 h = (struct elf_link_hash_entry *) h->root.u.i.link;
6944
6945 if (h->root.type == bfd_link_hash_defined
6946 || h->root.type == bfd_link_hash_defweak)
6947 {
6948 tsec = h->root.u.def.section;
6949 toff = h->root.u.def.value;
6950 }
6951 else if (h->root.type == bfd_link_hash_undefined
6952 || h->root.type == bfd_link_hash_undefweak)
6953 {
6954 tsec = bfd_und_section_ptr;
6955 toff = bfd_link_relocatable (link_info) ? indx : 0;
6956 }
6957 else
6958 continue;
6959
6960 /* If this branch is to __tls_get_addr then we may later
6961 optimise away the call. We won't be needing a long-
6962 branch stub in that case. */
6963 if (bfd_link_executable (link_info)
6964 && h == htab->tls_get_addr
6965 && irel != internal_relocs)
6966 {
6967 unsigned long t_symndx = ELF32_R_SYM (irel[-1].r_info);
6968 unsigned long t_rtype = ELF32_R_TYPE (irel[-1].r_info);
6969 unsigned int tls_mask = 0;
6970
6971 /* The previous reloc should be one of R_PPC_TLSGD or
6972 R_PPC_TLSLD, or for older object files, a reloc
6973 on the __tls_get_addr arg setup insn. Get tls
6974 mask bits from the symbol on that reloc. */
6975 if (t_symndx < symtab_hdr->sh_info)
6976 {
6977 bfd_vma *local_got_offsets = elf_local_got_offsets (abfd);
6978
6979 if (local_got_offsets != NULL)
6980 {
6981 struct plt_entry **local_plt = (struct plt_entry **)
6982 (local_got_offsets + symtab_hdr->sh_info);
6983 char *lgot_masks = (char *)
6984 (local_plt + symtab_hdr->sh_info);
6985 tls_mask = lgot_masks[t_symndx];
6986 }
6987 }
6988 else
6989 {
6990 struct elf_link_hash_entry *th
6991 = elf_sym_hashes (abfd)[t_symndx - symtab_hdr->sh_info];
6992
6993 while (th->root.type == bfd_link_hash_indirect
6994 || th->root.type == bfd_link_hash_warning)
6995 th = (struct elf_link_hash_entry *) th->root.u.i.link;
6996
6997 tls_mask
6998 = ((struct ppc_elf_link_hash_entry *) th)->tls_mask;
6999 }
7000
7001 /* The mask bits tell us if the call will be
7002 optimised away. */
7003 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0
7004 && (t_rtype == R_PPC_TLSGD
7005 || t_rtype == R_PPC_GOT_TLSGD16
7006 || t_rtype == R_PPC_GOT_TLSGD16_LO))
7007 continue;
7008 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0
7009 && (t_rtype == R_PPC_TLSLD
7010 || t_rtype == R_PPC_GOT_TLSLD16
7011 || t_rtype == R_PPC_GOT_TLSLD16_LO))
7012 continue;
7013 }
7014
7015 sym_type = h->type;
7016 }
7017
7018 if (r_type == R_PPC_ADDR16_HA)
7019 {
7020 if (h != NULL
7021 && !h->def_regular
7022 && h->protected_def
7023 && ppc_elf_hash_entry (h)->has_addr16_ha
7024 && ppc_elf_hash_entry (h)->has_addr16_lo)
7025 picfixup_size += 12;
7026 continue;
7027 }
7028
7029 /* The condition here under which we call find_plt_ent must
7030 match that in relocate_section. If we call find_plt_ent here
7031 but not in relocate_section, or vice versa, then the branch
7032 destination used here may be incorrect. */
7033 plist = NULL;
7034 if (h != NULL)
7035 {
7036 /* We know is_branch_reloc (r_type) is true. */
7037 if (h->type == STT_GNU_IFUNC
7038 || r_type == R_PPC_PLTREL24)
7039 plist = &h->plt.plist;
7040 }
7041 else if (sym_type == STT_GNU_IFUNC
7042 && elf_local_got_offsets (abfd) != NULL)
7043 {
7044 bfd_vma *local_got_offsets = elf_local_got_offsets (abfd);
7045 struct plt_entry **local_plt = (struct plt_entry **)
7046 (local_got_offsets + symtab_hdr->sh_info);
7047 plist = local_plt + ELF32_R_SYM (irel->r_info);
7048 }
7049 if (plist != NULL)
7050 {
7051 bfd_vma addend = 0;
7052 struct plt_entry *ent;
7053
7054 if (r_type == R_PPC_PLTREL24 && bfd_link_pic (link_info))
7055 addend = irel->r_addend;
7056 ent = find_plt_ent (plist, got2, addend);
7057 if (ent != NULL)
7058 {
7059 if (htab->plt_type == PLT_NEW
7060 || h == NULL
7061 || !htab->elf.dynamic_sections_created
7062 || h->dynindx == -1)
7063 {
7064 tsec = htab->glink;
7065 toff = ent->glink_offset;
7066 }
7067 else
7068 {
7069 tsec = htab->elf.splt;
7070 toff = ent->plt.offset;
7071 }
7072 }
7073 }
7074
7075 /* If the branch and target are in the same section, you have
7076 no hope of adding stubs. We'll error out later should the
7077 branch overflow. */
7078 if (tsec == isec)
7079 continue;
7080
7081 /* There probably isn't any reason to handle symbols in
7082 SEC_MERGE sections; SEC_MERGE doesn't seem a likely
7083 attribute for a code section, and we are only looking at
7084 branches. However, implement it correctly here as a
7085 reference for other target relax_section functions. */
7086 if (0 && tsec->sec_info_type == SEC_INFO_TYPE_MERGE)
7087 {
7088 /* At this stage in linking, no SEC_MERGE symbol has been
7089 adjusted, so all references to such symbols need to be
7090 passed through _bfd_merged_section_offset. (Later, in
7091 relocate_section, all SEC_MERGE symbols *except* for
7092 section symbols have been adjusted.)
7093
7094 gas may reduce relocations against symbols in SEC_MERGE
7095 sections to a relocation against the section symbol when
7096 the original addend was zero. When the reloc is against
7097 a section symbol we should include the addend in the
7098 offset passed to _bfd_merged_section_offset, since the
7099 location of interest is the original symbol. On the
7100 other hand, an access to "sym+addend" where "sym" is not
7101 a section symbol should not include the addend; Such an
7102 access is presumed to be an offset from "sym"; The
7103 location of interest is just "sym". */
7104 if (sym_type == STT_SECTION)
7105 toff += irel->r_addend;
7106
7107 toff
7108 = _bfd_merged_section_offset (abfd, &tsec,
7109 elf_section_data (tsec)->sec_info,
7110 toff);
7111
7112 if (sym_type != STT_SECTION)
7113 toff += irel->r_addend;
7114 }
7115 /* PLTREL24 addends are special. */
7116 else if (r_type != R_PPC_PLTREL24)
7117 toff += irel->r_addend;
7118
7119 /* Attempted -shared link of non-pic code loses. */
7120 if ((!bfd_link_relocatable (link_info)
7121 && tsec == bfd_und_section_ptr)
7122 || tsec->output_section == NULL
7123 || (tsec->owner != NULL
7124 && (tsec->owner->flags & BFD_PLUGIN) != 0))
7125 continue;
7126
7127 roff = irel->r_offset;
7128
7129 /* If the branch is in range, no need to do anything. */
7130 if (tsec != bfd_und_section_ptr
7131 && (!bfd_link_relocatable (link_info)
7132 /* A relocatable link may have sections moved during
7133 final link, so do not presume they remain in range. */
7134 || tsec->output_section == isec->output_section))
7135 {
7136 bfd_vma symaddr, reladdr;
7137
7138 symaddr = tsec->output_section->vma + tsec->output_offset + toff;
7139 reladdr = isec->output_section->vma + isec->output_offset + roff;
7140 if (symaddr - reladdr + max_branch_offset
7141 < 2 * max_branch_offset)
7142 continue;
7143 }
7144
7145 /* Look for an existing fixup to this address. */
7146 for (f = branch_fixups; f ; f = f->next)
7147 if (f->tsec == tsec && f->toff == toff)
7148 break;
7149
7150 if (f == NULL)
7151 {
7152 size_t size;
7153 unsigned long stub_rtype;
7154
7155 val = trampoff - roff;
7156 if (val >= max_branch_offset)
7157 /* Oh dear, we can't reach a trampoline. Don't try to add
7158 one. We'll report an error later. */
7159 continue;
7160
7161 if (bfd_link_pic (link_info))
7162 {
7163 size = 4 * ARRAY_SIZE (shared_stub_entry);
7164 insn_offset = 12;
7165 }
7166 else
7167 {
7168 size = 4 * ARRAY_SIZE (stub_entry);
7169 insn_offset = 0;
7170 }
7171 if (!htab->params->speculate_indirect_jumps)
7172 size += 8;
7173 stub_rtype = R_PPC_RELAX;
7174 if (tsec == htab->elf.splt
7175 || tsec == htab->glink)
7176 {
7177 stub_rtype = R_PPC_RELAX_PLT;
7178 if (r_type == R_PPC_PLTREL24)
7179 stub_rtype = R_PPC_RELAX_PLTREL24;
7180 }
7181
7182 /* Hijack the old relocation. Since we need two
7183 relocations for this use a "composite" reloc. */
7184 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
7185 stub_rtype);
7186 irel->r_offset = trampoff + insn_offset;
7187 if (r_type == R_PPC_PLTREL24
7188 && stub_rtype != R_PPC_RELAX_PLTREL24)
7189 irel->r_addend = 0;
7190
7191 /* Record the fixup so we don't do it again this section. */
7192 f = bfd_malloc (sizeof (*f));
7193 f->next = branch_fixups;
7194 f->tsec = tsec;
7195 f->toff = toff;
7196 f->trampoff = trampoff;
7197 branch_fixups = f;
7198
7199 trampoff += size;
7200 changes++;
7201 }
7202 else
7203 {
7204 val = f->trampoff - roff;
7205 if (val >= max_branch_offset)
7206 continue;
7207
7208 /* Nop out the reloc, since we're finalizing things here. */
7209 irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
7210 }
7211
7212 /* Get the section contents. */
7213 if (contents == NULL)
7214 {
7215 /* Get cached copy if it exists. */
7216 if (elf_section_data (isec)->this_hdr.contents != NULL)
7217 contents = elf_section_data (isec)->this_hdr.contents;
7218 /* Go get them off disk. */
7219 else if (!bfd_malloc_and_get_section (abfd, isec, &contents))
7220 goto error_return;
7221 }
7222
7223 /* Fix up the existing branch to hit the trampoline. */
7224 hit_addr = contents + roff;
7225 switch (r_type)
7226 {
7227 case R_PPC_REL24:
7228 case R_PPC_LOCAL24PC:
7229 case R_PPC_PLTREL24:
7230 t0 = bfd_get_32 (abfd, hit_addr);
7231 t0 &= ~0x3fffffc;
7232 t0 |= val & 0x3fffffc;
7233 bfd_put_32 (abfd, t0, hit_addr);
7234 break;
7235
7236 case R_PPC_REL14:
7237 case R_PPC_REL14_BRTAKEN:
7238 case R_PPC_REL14_BRNTAKEN:
7239 t0 = bfd_get_32 (abfd, hit_addr);
7240 t0 &= ~0xfffc;
7241 t0 |= val & 0xfffc;
7242 bfd_put_32 (abfd, t0, hit_addr);
7243 break;
7244 }
7245 }
7246
7247 while (branch_fixups != NULL)
7248 {
7249 struct one_branch_fixup *f = branch_fixups;
7250 branch_fixups = branch_fixups->next;
7251 free (f);
7252 }
7253 }
7254
7255 workaround_change = FALSE;
7256 newsize = trampoff;
7257 if (htab->params->ppc476_workaround
7258 && (!bfd_link_relocatable (link_info)
7259 || isec->output_section->alignment_power >= htab->params->pagesize_p2))
7260 {
7261 bfd_vma addr, end_addr;
7262 unsigned int crossings;
7263 bfd_vma pagesize = (bfd_vma) 1 << htab->params->pagesize_p2;
7264
7265 addr = isec->output_section->vma + isec->output_offset;
7266 end_addr = addr + trampoff;
7267 addr &= -pagesize;
7268 crossings = ((end_addr & -pagesize) - addr) >> htab->params->pagesize_p2;
7269 if (crossings != 0)
7270 {
7271 /* Keep space aligned, to ensure the patch code itself does
7272 not cross a page. Don't decrease size calculated on a
7273 previous pass as otherwise we might never settle on a layout. */
7274 newsize = 15 - ((end_addr - 1) & 15);
7275 newsize += crossings * 16;
7276 if (relax_info->workaround_size < newsize)
7277 {
7278 relax_info->workaround_size = newsize;
7279 workaround_change = TRUE;
7280 }
7281 /* Ensure relocate_section is called. */
7282 isec->flags |= SEC_RELOC;
7283 }
7284 newsize = trampoff + relax_info->workaround_size;
7285 }
7286
7287 if (htab->params->pic_fixup > 0)
7288 {
7289 picfixup_size -= relax_info->picfixup_size;
7290 if (picfixup_size != 0)
7291 relax_info->picfixup_size += picfixup_size;
7292 newsize += relax_info->picfixup_size;
7293 }
7294
7295 if (changes != 0 || picfixup_size != 0 || workaround_change)
7296 isec->size = newsize;
7297
7298 if (isymbuf != NULL
7299 && symtab_hdr->contents != (unsigned char *) isymbuf)
7300 {
7301 if (! link_info->keep_memory)
7302 free (isymbuf);
7303 else
7304 {
7305 /* Cache the symbols for elf_link_input_bfd. */
7306 symtab_hdr->contents = (unsigned char *) isymbuf;
7307 }
7308 }
7309
7310 if (contents != NULL
7311 && elf_section_data (isec)->this_hdr.contents != contents)
7312 {
7313 if (!changes && !link_info->keep_memory)
7314 free (contents);
7315 else
7316 {
7317 /* Cache the section contents for elf_link_input_bfd. */
7318 elf_section_data (isec)->this_hdr.contents = contents;
7319 }
7320 }
7321
7322 changes += picfixup_size;
7323 if (changes != 0)
7324 {
7325 /* Append sufficient NOP relocs so we can write out relocation
7326 information for the trampolines. */
7327 Elf_Internal_Shdr *rel_hdr;
7328 Elf_Internal_Rela *new_relocs = bfd_malloc ((changes + isec->reloc_count)
7329 * sizeof (*new_relocs));
7330 unsigned ix;
7331
7332 if (!new_relocs)
7333 goto error_return;
7334 memcpy (new_relocs, internal_relocs,
7335 isec->reloc_count * sizeof (*new_relocs));
7336 for (ix = changes; ix--;)
7337 {
7338 irel = new_relocs + ix + isec->reloc_count;
7339
7340 irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
7341 }
7342 if (internal_relocs != elf_section_data (isec)->relocs)
7343 free (internal_relocs);
7344 elf_section_data (isec)->relocs = new_relocs;
7345 isec->reloc_count += changes;
7346 rel_hdr = _bfd_elf_single_rel_hdr (isec);
7347 rel_hdr->sh_size += changes * rel_hdr->sh_entsize;
7348 }
7349 else if (internal_relocs != NULL
7350 && elf_section_data (isec)->relocs != internal_relocs)
7351 free (internal_relocs);
7352
7353 *again = changes != 0 || workaround_change;
7354 return TRUE;
7355
7356 error_return:
7357 while (branch_fixups != NULL)
7358 {
7359 struct one_branch_fixup *f = branch_fixups;
7360 branch_fixups = branch_fixups->next;
7361 free (f);
7362 }
7363 if (isymbuf != NULL && (unsigned char *) isymbuf != symtab_hdr->contents)
7364 free (isymbuf);
7365 if (contents != NULL
7366 && elf_section_data (isec)->this_hdr.contents != contents)
7367 free (contents);
7368 if (internal_relocs != NULL
7369 && elf_section_data (isec)->relocs != internal_relocs)
7370 free (internal_relocs);
7371 return FALSE;
7372 }
7373 \f
7374 /* What to do when ld finds relocations against symbols defined in
7375 discarded sections. */
7376
7377 static unsigned int
7378 ppc_elf_action_discarded (asection *sec)
7379 {
7380 if (strcmp (".fixup", sec->name) == 0)
7381 return 0;
7382
7383 if (strcmp (".got2", sec->name) == 0)
7384 return 0;
7385
7386 return _bfd_elf_default_action_discarded (sec);
7387 }
7388 \f
7389 /* Fill in the address for a pointer generated in a linker section. */
7390
7391 static bfd_vma
7392 elf_finish_pointer_linker_section (bfd *input_bfd,
7393 elf_linker_section_t *lsect,
7394 struct elf_link_hash_entry *h,
7395 bfd_vma relocation,
7396 const Elf_Internal_Rela *rel)
7397 {
7398 elf_linker_section_pointers_t *linker_section_ptr;
7399
7400 BFD_ASSERT (lsect != NULL);
7401
7402 if (h != NULL)
7403 {
7404 /* Handle global symbol. */
7405 struct ppc_elf_link_hash_entry *eh;
7406
7407 eh = (struct ppc_elf_link_hash_entry *) h;
7408 BFD_ASSERT (eh->elf.def_regular);
7409 linker_section_ptr = eh->linker_section_pointer;
7410 }
7411 else
7412 {
7413 /* Handle local symbol. */
7414 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
7415
7416 BFD_ASSERT (is_ppc_elf (input_bfd));
7417 BFD_ASSERT (elf_local_ptr_offsets (input_bfd) != NULL);
7418 linker_section_ptr = elf_local_ptr_offsets (input_bfd)[r_symndx];
7419 }
7420
7421 linker_section_ptr = elf_find_pointer_linker_section (linker_section_ptr,
7422 rel->r_addend,
7423 lsect);
7424 BFD_ASSERT (linker_section_ptr != NULL);
7425
7426 /* Offset will always be a multiple of four, so use the bottom bit
7427 as a "written" flag. */
7428 if ((linker_section_ptr->offset & 1) == 0)
7429 {
7430 bfd_put_32 (lsect->section->owner,
7431 relocation + linker_section_ptr->addend,
7432 lsect->section->contents + linker_section_ptr->offset);
7433 linker_section_ptr->offset += 1;
7434 }
7435
7436 relocation = (lsect->section->output_section->vma
7437 + lsect->section->output_offset
7438 + linker_section_ptr->offset - 1
7439 - SYM_VAL (lsect->sym));
7440
7441 #ifdef DEBUG
7442 fprintf (stderr,
7443 "Finish pointer in linker section %s, offset = %ld (0x%lx)\n",
7444 lsect->name, (long) relocation, (long) relocation);
7445 #endif
7446
7447 return relocation;
7448 }
7449
7450 #define PPC_LO(v) ((v) & 0xffff)
7451 #define PPC_HI(v) (((v) >> 16) & 0xffff)
7452 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
7453
7454 static inline bfd_byte *
7455 output_bctr (struct ppc_elf_link_hash_table *htab, bfd *obfd, bfd_byte *p)
7456 {
7457 if (!htab->params->speculate_indirect_jumps)
7458 {
7459 bfd_put_32 (obfd, CRSETEQ, p);
7460 p += 4;
7461 bfd_put_32 (obfd, BEQCTRM, p);
7462 p += 4;
7463 bfd_put_32 (obfd, B, p);
7464 p += 4;
7465 }
7466 else
7467 {
7468 bfd_put_32 (obfd, BCTR, p);
7469 p += 4;
7470 }
7471 return p;
7472 }
7473
7474 static void
7475 write_glink_stub (struct elf_link_hash_entry *h, struct plt_entry *ent,
7476 asection *plt_sec, unsigned char *p,
7477 struct bfd_link_info *info)
7478 {
7479 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
7480 bfd *output_bfd = info->output_bfd;
7481 bfd_vma plt;
7482 unsigned char *end = p + GLINK_ENTRY_SIZE (htab, h);
7483
7484 if (h != NULL
7485 && h == htab->tls_get_addr
7486 && !htab->params->no_tls_get_addr_opt)
7487 {
7488 bfd_put_32 (output_bfd, LWZ_11_3, p);
7489 p += 4;
7490 bfd_put_32 (output_bfd, LWZ_12_3 + 4, p);
7491 p += 4;
7492 bfd_put_32 (output_bfd, MR_0_3, p);
7493 p += 4;
7494 bfd_put_32 (output_bfd, CMPWI_11_0, p);
7495 p += 4;
7496 bfd_put_32 (output_bfd, ADD_3_12_2, p);
7497 p += 4;
7498 bfd_put_32 (output_bfd, BEQLR, p);
7499 p += 4;
7500 bfd_put_32 (output_bfd, MR_3_0, p);
7501 p += 4;
7502 bfd_put_32 (output_bfd, NOP, p);
7503 p += 4;
7504 }
7505
7506 plt = ((ent->plt.offset & ~1)
7507 + plt_sec->output_section->vma
7508 + plt_sec->output_offset);
7509
7510 if (bfd_link_pic (info))
7511 {
7512 bfd_vma got = 0;
7513
7514 if (ent->addend >= 32768)
7515 got = (ent->addend
7516 + ent->sec->output_section->vma
7517 + ent->sec->output_offset);
7518 else if (htab->elf.hgot != NULL)
7519 got = SYM_VAL (htab->elf.hgot);
7520
7521 plt -= got;
7522
7523 if (plt + 0x8000 < 0x10000)
7524 bfd_put_32 (output_bfd, LWZ_11_30 + PPC_LO (plt), p);
7525 else
7526 {
7527 bfd_put_32 (output_bfd, ADDIS_11_30 + PPC_HA (plt), p);
7528 p += 4;
7529 bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
7530 }
7531 }
7532 else
7533 {
7534 bfd_put_32 (output_bfd, LIS_11 + PPC_HA (plt), p);
7535 p += 4;
7536 bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
7537 }
7538 p += 4;
7539 bfd_put_32 (output_bfd, MTCTR_11, p);
7540 p += 4;
7541 p = output_bctr (htab, output_bfd, p);
7542 while (p < end)
7543 {
7544 bfd_put_32 (output_bfd, htab->params->ppc476_workaround ? BA : NOP, p);
7545 p += 4;
7546 }
7547 }
7548
7549 /* Return true if symbol is defined statically. */
7550
7551 static bfd_boolean
7552 is_static_defined (struct elf_link_hash_entry *h)
7553 {
7554 return ((h->root.type == bfd_link_hash_defined
7555 || h->root.type == bfd_link_hash_defweak)
7556 && h->root.u.def.section != NULL
7557 && h->root.u.def.section->output_section != NULL);
7558 }
7559
7560 /* If INSN is an opcode that may be used with an @tls operand, return
7561 the transformed insn for TLS optimisation, otherwise return 0. If
7562 REG is non-zero only match an insn with RB or RA equal to REG. */
7563
7564 unsigned int
7565 _bfd_elf_ppc_at_tls_transform (unsigned int insn, unsigned int reg)
7566 {
7567 unsigned int rtra;
7568
7569 if ((insn & (0x3f << 26)) != 31 << 26)
7570 return 0;
7571
7572 if (reg == 0 || ((insn >> 11) & 0x1f) == reg)
7573 rtra = insn & ((1 << 26) - (1 << 16));
7574 else if (((insn >> 16) & 0x1f) == reg)
7575 rtra = (insn & (0x1f << 21)) | ((insn & (0x1f << 11)) << 5);
7576 else
7577 return 0;
7578
7579 if ((insn & (0x3ff << 1)) == 266 << 1)
7580 /* add -> addi. */
7581 insn = 14 << 26;
7582 else if ((insn & (0x1f << 1)) == 23 << 1
7583 && ((insn & (0x1f << 6)) < 14 << 6
7584 || ((insn & (0x1f << 6)) >= 16 << 6
7585 && (insn & (0x1f << 6)) < 24 << 6)))
7586 /* load and store indexed -> dform. */
7587 insn = (32 | ((insn >> 6) & 0x1f)) << 26;
7588 else if ((insn & (((0x1a << 5) | 0x1f) << 1)) == 21 << 1)
7589 /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
7590 insn = ((58 | ((insn >> 6) & 4)) << 26) | ((insn >> 6) & 1);
7591 else if ((insn & (((0x1f << 5) | 0x1f) << 1)) == 341 << 1)
7592 /* lwax -> lwa. */
7593 insn = (58 << 26) | 2;
7594 else
7595 return 0;
7596 insn |= rtra;
7597 return insn;
7598 }
7599
7600 /* If INSN is an opcode that may be used with an @tprel operand, return
7601 the transformed insn for an undefined weak symbol, ie. with the
7602 thread pointer REG operand removed. Otherwise return 0. */
7603
7604 unsigned int
7605 _bfd_elf_ppc_at_tprel_transform (unsigned int insn, unsigned int reg)
7606 {
7607 if ((insn & (0x1f << 16)) == reg << 16
7608 && ((insn & (0x3f << 26)) == 14u << 26 /* addi */
7609 || (insn & (0x3f << 26)) == 15u << 26 /* addis */
7610 || (insn & (0x3f << 26)) == 32u << 26 /* lwz */
7611 || (insn & (0x3f << 26)) == 34u << 26 /* lbz */
7612 || (insn & (0x3f << 26)) == 36u << 26 /* stw */
7613 || (insn & (0x3f << 26)) == 38u << 26 /* stb */
7614 || (insn & (0x3f << 26)) == 40u << 26 /* lhz */
7615 || (insn & (0x3f << 26)) == 42u << 26 /* lha */
7616 || (insn & (0x3f << 26)) == 44u << 26 /* sth */
7617 || (insn & (0x3f << 26)) == 46u << 26 /* lmw */
7618 || (insn & (0x3f << 26)) == 47u << 26 /* stmw */
7619 || (insn & (0x3f << 26)) == 48u << 26 /* lfs */
7620 || (insn & (0x3f << 26)) == 50u << 26 /* lfd */
7621 || (insn & (0x3f << 26)) == 52u << 26 /* stfs */
7622 || (insn & (0x3f << 26)) == 54u << 26 /* stfd */
7623 || ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
7624 && (insn & 3) != 1)
7625 || ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */
7626 && ((insn & 3) == 0 || (insn & 3) == 3))))
7627 {
7628 insn &= ~(0x1f << 16);
7629 }
7630 else if ((insn & (0x1f << 21)) == reg << 21
7631 && ((insn & (0x3e << 26)) == 24u << 26 /* ori, oris */
7632 || (insn & (0x3e << 26)) == 26u << 26 /* xori,xoris */
7633 || (insn & (0x3e << 26)) == 28u << 26 /* andi,andis */))
7634 {
7635 insn &= ~(0x1f << 21);
7636 insn |= (insn & (0x1f << 16)) << 5;
7637 if ((insn & (0x3e << 26)) == 26 << 26 /* xori,xoris */)
7638 insn -= 2 >> 26; /* convert to ori,oris */
7639 }
7640 else
7641 insn = 0;
7642 return insn;
7643 }
7644
7645 static bfd_boolean
7646 is_insn_ds_form (unsigned int insn)
7647 {
7648 return ((insn & (0x3f << 26)) == 58u << 26 /* ld,ldu,lwa */
7649 || (insn & (0x3f << 26)) == 62u << 26 /* std,stdu,stq */
7650 || (insn & (0x3f << 26)) == 57u << 26 /* lfdp */
7651 || (insn & (0x3f << 26)) == 61u << 26 /* stfdp */);
7652 }
7653
7654 static bfd_boolean
7655 is_insn_dq_form (unsigned int insn)
7656 {
7657 return ((insn & (0x3f << 26)) == 56u << 26 /* lq */
7658 || ((insn & (0x3f << 26)) == (61u << 26) /* lxv, stxv */
7659 && (insn & 3) == 1));
7660 }
7661
7662 /* The RELOCATE_SECTION function is called by the ELF backend linker
7663 to handle the relocations for a section.
7664
7665 The relocs are always passed as Rela structures; if the section
7666 actually uses Rel structures, the r_addend field will always be
7667 zero.
7668
7669 This function is responsible for adjust the section contents as
7670 necessary, and (if using Rela relocs and generating a
7671 relocatable output file) adjusting the reloc addend as
7672 necessary.
7673
7674 This function does not have to worry about setting the reloc
7675 address or the reloc symbol index.
7676
7677 LOCAL_SYMS is a pointer to the swapped in local symbols.
7678
7679 LOCAL_SECTIONS is an array giving the section in the input file
7680 corresponding to the st_shndx field of each local symbol.
7681
7682 The global hash table entry for the global symbols can be found
7683 via elf_sym_hashes (input_bfd).
7684
7685 When generating relocatable output, this function must handle
7686 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
7687 going to be the section symbol corresponding to the output
7688 section, which means that the addend must be adjusted
7689 accordingly. */
7690
7691 static bfd_boolean
7692 ppc_elf_relocate_section (bfd *output_bfd,
7693 struct bfd_link_info *info,
7694 bfd *input_bfd,
7695 asection *input_section,
7696 bfd_byte *contents,
7697 Elf_Internal_Rela *relocs,
7698 Elf_Internal_Sym *local_syms,
7699 asection **local_sections)
7700 {
7701 Elf_Internal_Shdr *symtab_hdr;
7702 struct elf_link_hash_entry **sym_hashes;
7703 struct ppc_elf_link_hash_table *htab;
7704 Elf_Internal_Rela *rel;
7705 Elf_Internal_Rela *wrel;
7706 Elf_Internal_Rela *relend;
7707 Elf_Internal_Rela outrel;
7708 asection *got2;
7709 bfd_vma *local_got_offsets;
7710 bfd_boolean ret = TRUE;
7711 bfd_vma d_offset = (bfd_big_endian (input_bfd) ? 2 : 0);
7712 bfd_boolean is_vxworks_tls;
7713 unsigned int picfixup_size = 0;
7714 struct ppc_elf_relax_info *relax_info = NULL;
7715
7716 #ifdef DEBUG
7717 _bfd_error_handler ("ppc_elf_relocate_section called for %B section %A, "
7718 "%ld relocations%s",
7719 input_bfd, input_section,
7720 (long) input_section->reloc_count,
7721 (bfd_link_relocatable (info)) ? " (relocatable)" : "");
7722 #endif
7723
7724 got2 = bfd_get_section_by_name (input_bfd, ".got2");
7725
7726 /* Initialize howto table if not already done. */
7727 if (!ppc_elf_howto_table[R_PPC_ADDR32])
7728 ppc_elf_howto_init ();
7729
7730 htab = ppc_elf_hash_table (info);
7731 local_got_offsets = elf_local_got_offsets (input_bfd);
7732 symtab_hdr = &elf_symtab_hdr (input_bfd);
7733 sym_hashes = elf_sym_hashes (input_bfd);
7734 /* We have to handle relocations in vxworks .tls_vars sections
7735 specially, because the dynamic loader is 'weird'. */
7736 is_vxworks_tls = (htab->is_vxworks && bfd_link_pic (info)
7737 && !strcmp (input_section->output_section->name,
7738 ".tls_vars"));
7739 if (input_section->sec_info_type == SEC_INFO_TYPE_TARGET)
7740 relax_info = elf_section_data (input_section)->sec_info;
7741 rel = wrel = relocs;
7742 relend = relocs + input_section->reloc_count;
7743 for (; rel < relend; wrel++, rel++)
7744 {
7745 enum elf_ppc_reloc_type r_type;
7746 bfd_vma addend;
7747 bfd_reloc_status_type r;
7748 Elf_Internal_Sym *sym;
7749 asection *sec;
7750 struct elf_link_hash_entry *h;
7751 const char *sym_name;
7752 reloc_howto_type *howto;
7753 unsigned long r_symndx;
7754 bfd_vma relocation;
7755 bfd_vma branch_bit, from;
7756 bfd_boolean unresolved_reloc;
7757 bfd_boolean warned;
7758 unsigned int tls_type, tls_mask, tls_gd;
7759 struct plt_entry **ifunc;
7760 struct reloc_howto_struct alt_howto;
7761
7762 again:
7763 r_type = ELF32_R_TYPE (rel->r_info);
7764 sym = NULL;
7765 sec = NULL;
7766 h = NULL;
7767 unresolved_reloc = FALSE;
7768 warned = FALSE;
7769 r_symndx = ELF32_R_SYM (rel->r_info);
7770
7771 if (r_symndx < symtab_hdr->sh_info)
7772 {
7773 sym = local_syms + r_symndx;
7774 sec = local_sections[r_symndx];
7775 sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
7776
7777 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
7778 }
7779 else
7780 {
7781 bfd_boolean ignored;
7782
7783 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
7784 r_symndx, symtab_hdr, sym_hashes,
7785 h, sec, relocation,
7786 unresolved_reloc, warned, ignored);
7787
7788 sym_name = h->root.root.string;
7789 }
7790
7791 if (sec != NULL && discarded_section (sec))
7792 {
7793 /* For relocs against symbols from removed linkonce sections,
7794 or sections discarded by a linker script, we just want the
7795 section contents zeroed. Avoid any special processing. */
7796 howto = NULL;
7797 if (r_type < R_PPC_max)
7798 howto = ppc_elf_howto_table[r_type];
7799
7800 _bfd_clear_contents (howto, input_bfd, input_section,
7801 contents + rel->r_offset);
7802 wrel->r_offset = rel->r_offset;
7803 wrel->r_info = 0;
7804 wrel->r_addend = 0;
7805
7806 /* For ld -r, remove relocations in debug sections against
7807 symbols defined in discarded sections. Not done for
7808 non-debug to preserve relocs in .eh_frame which the
7809 eh_frame editing code expects to be present. */
7810 if (bfd_link_relocatable (info)
7811 && (input_section->flags & SEC_DEBUGGING))
7812 wrel--;
7813
7814 continue;
7815 }
7816
7817 if (bfd_link_relocatable (info))
7818 {
7819 if (got2 != NULL
7820 && r_type == R_PPC_PLTREL24
7821 && rel->r_addend != 0)
7822 {
7823 /* R_PPC_PLTREL24 is rather special. If non-zero, the
7824 addend specifies the GOT pointer offset within .got2. */
7825 rel->r_addend += got2->output_offset;
7826 }
7827 if (r_type != R_PPC_RELAX_PLT
7828 && r_type != R_PPC_RELAX_PLTREL24
7829 && r_type != R_PPC_RELAX)
7830 goto copy_reloc;
7831 }
7832
7833 /* TLS optimizations. Replace instruction sequences and relocs
7834 based on information we collected in tls_optimize. We edit
7835 RELOCS so that --emit-relocs will output something sensible
7836 for the final instruction stream. */
7837 tls_mask = 0;
7838 tls_gd = 0;
7839 if (h != NULL)
7840 tls_mask = ((struct ppc_elf_link_hash_entry *) h)->tls_mask;
7841 else if (local_got_offsets != NULL)
7842 {
7843 struct plt_entry **local_plt;
7844 char *lgot_masks;
7845 local_plt
7846 = (struct plt_entry **) (local_got_offsets + symtab_hdr->sh_info);
7847 lgot_masks = (char *) (local_plt + symtab_hdr->sh_info);
7848 tls_mask = lgot_masks[r_symndx];
7849 }
7850
7851 /* Ensure reloc mapping code below stays sane. */
7852 if ((R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TLSGD16 & 3)
7853 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TLSGD16_LO & 3)
7854 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TLSGD16_HI & 3)
7855 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TLSGD16_HA & 3)
7856 || (R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TPREL16 & 3)
7857 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TPREL16_LO & 3)
7858 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TPREL16_HI & 3)
7859 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TPREL16_HA & 3))
7860 abort ();
7861 switch (r_type)
7862 {
7863 default:
7864 break;
7865
7866 case R_PPC_GOT_TPREL16:
7867 case R_PPC_GOT_TPREL16_LO:
7868 if ((tls_mask & TLS_TLS) != 0
7869 && (tls_mask & TLS_TPREL) == 0)
7870 {
7871 bfd_vma insn;
7872
7873 insn = bfd_get_32 (input_bfd,
7874 contents + rel->r_offset - d_offset);
7875 insn &= 31 << 21;
7876 insn |= 0x3c020000; /* addis 0,2,0 */
7877 bfd_put_32 (input_bfd, insn,
7878 contents + rel->r_offset - d_offset);
7879 r_type = R_PPC_TPREL16_HA;
7880 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7881 }
7882 break;
7883
7884 case R_PPC_TLS:
7885 if ((tls_mask & TLS_TLS) != 0
7886 && (tls_mask & TLS_TPREL) == 0)
7887 {
7888 bfd_vma insn;
7889
7890 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
7891 insn = _bfd_elf_ppc_at_tls_transform (insn, 2);
7892 if (insn == 0)
7893 abort ();
7894 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
7895 r_type = R_PPC_TPREL16_LO;
7896 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7897
7898 /* Was PPC_TLS which sits on insn boundary, now
7899 PPC_TPREL16_LO which is at low-order half-word. */
7900 rel->r_offset += d_offset;
7901 }
7902 break;
7903
7904 case R_PPC_GOT_TLSGD16_HI:
7905 case R_PPC_GOT_TLSGD16_HA:
7906 tls_gd = TLS_TPRELGD;
7907 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
7908 goto tls_gdld_hi;
7909 break;
7910
7911 case R_PPC_GOT_TLSLD16_HI:
7912 case R_PPC_GOT_TLSLD16_HA:
7913 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
7914 {
7915 tls_gdld_hi:
7916 if ((tls_mask & tls_gd) != 0)
7917 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
7918 + R_PPC_GOT_TPREL16);
7919 else
7920 {
7921 rel->r_offset -= d_offset;
7922 bfd_put_32 (input_bfd, NOP, contents + rel->r_offset);
7923 r_type = R_PPC_NONE;
7924 }
7925 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7926 }
7927 break;
7928
7929 case R_PPC_GOT_TLSGD16:
7930 case R_PPC_GOT_TLSGD16_LO:
7931 tls_gd = TLS_TPRELGD;
7932 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
7933 goto tls_ldgd_opt;
7934 break;
7935
7936 case R_PPC_GOT_TLSLD16:
7937 case R_PPC_GOT_TLSLD16_LO:
7938 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
7939 {
7940 unsigned int insn1, insn2;
7941 bfd_vma offset;
7942
7943 tls_ldgd_opt:
7944 offset = (bfd_vma) -1;
7945 /* If not using the newer R_PPC_TLSGD/LD to mark
7946 __tls_get_addr calls, we must trust that the call
7947 stays with its arg setup insns, ie. that the next
7948 reloc is the __tls_get_addr call associated with
7949 the current reloc. Edit both insns. */
7950 if (input_section->has_tls_get_addr_call
7951 && rel + 1 < relend
7952 && branch_reloc_hash_match (input_bfd, rel + 1,
7953 htab->tls_get_addr))
7954 offset = rel[1].r_offset;
7955 /* We read the low GOT_TLS insn because we need to keep
7956 the destination reg. It may be something other than
7957 the usual r3, and moved to r3 before the call by
7958 intervening code. */
7959 insn1 = bfd_get_32 (input_bfd,
7960 contents + rel->r_offset - d_offset);
7961 if ((tls_mask & tls_gd) != 0)
7962 {
7963 /* IE */
7964 insn1 &= (0x1f << 21) | (0x1f << 16);
7965 insn1 |= 32 << 26; /* lwz */
7966 if (offset != (bfd_vma) -1)
7967 {
7968 rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
7969 insn2 = 0x7c631214; /* add 3,3,2 */
7970 bfd_put_32 (input_bfd, insn2, contents + offset);
7971 }
7972 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
7973 + R_PPC_GOT_TPREL16);
7974 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7975 }
7976 else
7977 {
7978 /* LE */
7979 insn1 &= 0x1f << 21;
7980 insn1 |= 0x3c020000; /* addis r,2,0 */
7981 if (tls_gd == 0)
7982 {
7983 /* Was an LD reloc. */
7984 for (r_symndx = 0;
7985 r_symndx < symtab_hdr->sh_info;
7986 r_symndx++)
7987 if (local_sections[r_symndx] == sec)
7988 break;
7989 if (r_symndx >= symtab_hdr->sh_info)
7990 r_symndx = STN_UNDEF;
7991 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
7992 if (r_symndx != STN_UNDEF)
7993 rel->r_addend -= (local_syms[r_symndx].st_value
7994 + sec->output_offset
7995 + sec->output_section->vma);
7996 }
7997 r_type = R_PPC_TPREL16_HA;
7998 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7999 if (offset != (bfd_vma) -1)
8000 {
8001 rel[1].r_info = ELF32_R_INFO (r_symndx, R_PPC_TPREL16_LO);
8002 rel[1].r_offset = offset + d_offset;
8003 rel[1].r_addend = rel->r_addend;
8004 insn2 = 0x38630000; /* addi 3,3,0 */
8005 bfd_put_32 (input_bfd, insn2, contents + offset);
8006 }
8007 }
8008 bfd_put_32 (input_bfd, insn1,
8009 contents + rel->r_offset - d_offset);
8010 if (tls_gd == 0)
8011 {
8012 /* We changed the symbol on an LD reloc. Start over
8013 in order to get h, sym, sec etc. right. */
8014 goto again;
8015 }
8016 }
8017 break;
8018
8019 case R_PPC_TLSGD:
8020 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
8021 {
8022 unsigned int insn2;
8023 bfd_vma offset = rel->r_offset;
8024
8025 if ((tls_mask & TLS_TPRELGD) != 0)
8026 {
8027 /* IE */
8028 r_type = R_PPC_NONE;
8029 insn2 = 0x7c631214; /* add 3,3,2 */
8030 }
8031 else
8032 {
8033 /* LE */
8034 r_type = R_PPC_TPREL16_LO;
8035 rel->r_offset += d_offset;
8036 insn2 = 0x38630000; /* addi 3,3,0 */
8037 }
8038 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
8039 bfd_put_32 (input_bfd, insn2, contents + offset);
8040 /* Zap the reloc on the _tls_get_addr call too. */
8041 BFD_ASSERT (offset == rel[1].r_offset);
8042 rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
8043 }
8044 break;
8045
8046 case R_PPC_TLSLD:
8047 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
8048 {
8049 unsigned int insn2;
8050
8051 for (r_symndx = 0;
8052 r_symndx < symtab_hdr->sh_info;
8053 r_symndx++)
8054 if (local_sections[r_symndx] == sec)
8055 break;
8056 if (r_symndx >= symtab_hdr->sh_info)
8057 r_symndx = STN_UNDEF;
8058 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
8059 if (r_symndx != STN_UNDEF)
8060 rel->r_addend -= (local_syms[r_symndx].st_value
8061 + sec->output_offset
8062 + sec->output_section->vma);
8063
8064 rel->r_info = ELF32_R_INFO (r_symndx, R_PPC_TPREL16_LO);
8065 rel->r_offset += d_offset;
8066 insn2 = 0x38630000; /* addi 3,3,0 */
8067 bfd_put_32 (input_bfd, insn2,
8068 contents + rel->r_offset - d_offset);
8069 /* Zap the reloc on the _tls_get_addr call too. */
8070 BFD_ASSERT (rel->r_offset - d_offset == rel[1].r_offset);
8071 rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
8072 goto again;
8073 }
8074 break;
8075 }
8076
8077 /* Handle other relocations that tweak non-addend part of insn. */
8078 branch_bit = 0;
8079 switch (r_type)
8080 {
8081 default:
8082 break;
8083
8084 /* Branch taken prediction relocations. */
8085 case R_PPC_ADDR14_BRTAKEN:
8086 case R_PPC_REL14_BRTAKEN:
8087 branch_bit = BRANCH_PREDICT_BIT;
8088 /* Fall through. */
8089
8090 /* Branch not taken prediction relocations. */
8091 case R_PPC_ADDR14_BRNTAKEN:
8092 case R_PPC_REL14_BRNTAKEN:
8093 {
8094 bfd_vma insn;
8095
8096 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
8097 insn &= ~BRANCH_PREDICT_BIT;
8098 insn |= branch_bit;
8099
8100 from = (rel->r_offset
8101 + input_section->output_offset
8102 + input_section->output_section->vma);
8103
8104 /* Invert 'y' bit if not the default. */
8105 if ((bfd_signed_vma) (relocation + rel->r_addend - from) < 0)
8106 insn ^= BRANCH_PREDICT_BIT;
8107
8108 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
8109 break;
8110 }
8111 }
8112
8113 if (ELIMINATE_COPY_RELOCS
8114 && h != NULL
8115 && !h->def_regular
8116 && h->protected_def
8117 && ppc_elf_hash_entry (h)->has_addr16_ha
8118 && ppc_elf_hash_entry (h)->has_addr16_lo
8119 && htab->params->pic_fixup > 0)
8120 {
8121 /* Convert lis;addi or lis;load/store accessing a protected
8122 variable defined in a shared library to PIC. */
8123 unsigned int insn;
8124
8125 if (r_type == R_PPC_ADDR16_HA)
8126 {
8127 insn = bfd_get_32 (input_bfd,
8128 contents + rel->r_offset - d_offset);
8129 if ((insn & (0x3f << 26)) == (15u << 26)
8130 && (insn & (0x1f << 16)) == 0 /* lis */)
8131 {
8132 bfd_byte *p;
8133 bfd_vma off;
8134 bfd_vma got_addr;
8135
8136 p = (contents + input_section->size
8137 - relax_info->workaround_size
8138 - relax_info->picfixup_size
8139 + picfixup_size);
8140 off = (p - contents) - (rel->r_offset - d_offset);
8141 if (off > 0x1fffffc || (off & 3) != 0)
8142 info->callbacks->einfo
8143 (_("%H: fixup branch overflow\n"),
8144 input_bfd, input_section, rel->r_offset);
8145
8146 bfd_put_32 (input_bfd, B | off,
8147 contents + rel->r_offset - d_offset);
8148 got_addr = (htab->elf.sgot->output_section->vma
8149 + htab->elf.sgot->output_offset
8150 + (h->got.offset & ~1));
8151 wrel->r_offset = (p - contents) + d_offset;
8152 wrel->r_info = ELF32_R_INFO (0, R_PPC_ADDR16_HA);
8153 wrel->r_addend = got_addr;
8154 insn &= ~0xffff;
8155 insn |= ((unsigned int) (got_addr + 0x8000) >> 16) & 0xffff;
8156 bfd_put_32 (input_bfd, insn, p);
8157
8158 /* Convert lis to lwz, loading address from GOT. */
8159 insn &= ~0xffff;
8160 insn ^= (32u ^ 15u) << 26;
8161 insn |= (insn & (0x1f << 21)) >> 5;
8162 insn |= got_addr & 0xffff;
8163 bfd_put_32 (input_bfd, insn, p + 4);
8164
8165 bfd_put_32 (input_bfd, B | ((-4 - off) & 0x3ffffff), p + 8);
8166 picfixup_size += 12;
8167
8168 /* Use one of the spare relocs, so --emit-relocs
8169 output is reasonable. */
8170 memmove (rel + 1, rel, (relend - rel - 1) * sizeof (*rel));
8171 wrel++, rel++;
8172 rel->r_offset = wrel[-1].r_offset + 4;
8173 rel->r_info = ELF32_R_INFO (0, R_PPC_ADDR16_LO);
8174 rel->r_addend = wrel[-1].r_addend;
8175
8176 /* Continue on as if we had a got reloc, to output
8177 dynamic reloc. */
8178 r_type = R_PPC_GOT16_LO;
8179 }
8180 else
8181 _bfd_error_handler
8182 /* xgettext:c-format */
8183 (_("%B(%A+%#Lx): error: %s with unexpected instruction %#x"),
8184 input_bfd, input_section, rel->r_offset,
8185 "R_PPC_ADDR16_HA", insn);
8186 }
8187 else if (r_type == R_PPC_ADDR16_LO)
8188 {
8189 insn = bfd_get_32 (input_bfd,
8190 contents + rel->r_offset - d_offset);
8191 if ((insn & (0x3f << 26)) == 14u << 26 /* addi */
8192 || (insn & (0x3f << 26)) == 32u << 26 /* lwz */
8193 || (insn & (0x3f << 26)) == 34u << 26 /* lbz */
8194 || (insn & (0x3f << 26)) == 36u << 26 /* stw */
8195 || (insn & (0x3f << 26)) == 38u << 26 /* stb */
8196 || (insn & (0x3f << 26)) == 40u << 26 /* lhz */
8197 || (insn & (0x3f << 26)) == 42u << 26 /* lha */
8198 || (insn & (0x3f << 26)) == 44u << 26 /* sth */
8199 || (insn & (0x3f << 26)) == 46u << 26 /* lmw */
8200 || (insn & (0x3f << 26)) == 47u << 26 /* stmw */
8201 || (insn & (0x3f << 26)) == 48u << 26 /* lfs */
8202 || (insn & (0x3f << 26)) == 50u << 26 /* lfd */
8203 || (insn & (0x3f << 26)) == 52u << 26 /* stfs */
8204 || (insn & (0x3f << 26)) == 54u << 26 /* stfd */
8205 || ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
8206 && (insn & 3) != 1)
8207 || ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */
8208 && ((insn & 3) == 0 || (insn & 3) == 3)))
8209 {
8210 /* Arrange to apply the reloc addend, if any. */
8211 relocation = 0;
8212 unresolved_reloc = FALSE;
8213 rel->r_info = ELF32_R_INFO (0, r_type);
8214 }
8215 else
8216 _bfd_error_handler
8217 /* xgettext:c-format */
8218 (_("%B(%A+%#Lx): error: %s with unexpected instruction %#x"),
8219 input_bfd, input_section, rel->r_offset,
8220 "R_PPC_ADDR16_LO", insn);
8221 }
8222 }
8223
8224 ifunc = NULL;
8225 if (!htab->is_vxworks)
8226 {
8227 struct plt_entry *ent;
8228
8229 if (h != NULL)
8230 {
8231 if (h->type == STT_GNU_IFUNC)
8232 ifunc = &h->plt.plist;
8233 }
8234 else if (local_got_offsets != NULL
8235 && ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
8236 {
8237 struct plt_entry **local_plt;
8238
8239 local_plt = (struct plt_entry **) (local_got_offsets
8240 + symtab_hdr->sh_info);
8241 ifunc = local_plt + r_symndx;
8242 }
8243
8244 ent = NULL;
8245 if (ifunc != NULL
8246 && (!bfd_link_pic (info)
8247 || is_branch_reloc (r_type)))
8248 {
8249 addend = 0;
8250 if (r_type == R_PPC_PLTREL24 && bfd_link_pic (info))
8251 addend = rel->r_addend;
8252 ent = find_plt_ent (ifunc, got2, addend);
8253 }
8254 if (ent != NULL)
8255 {
8256 if (bfd_link_pic (info)
8257 && ent->sec != got2
8258 && htab->plt_type != PLT_NEW
8259 && (!htab->elf.dynamic_sections_created
8260 || h == NULL
8261 || h->dynindx == -1))
8262 {
8263 /* Uh oh, we are going to create a pic glink stub
8264 for an ifunc (here for h == NULL and later in
8265 finish_dynamic_symbol for h != NULL), and
8266 apparently are using code compiled with
8267 -mbss-plt. The difficulty is that -mbss-plt code
8268 gives no indication via a magic PLTREL24 addend
8269 whether r30 is equal to _GLOBAL_OFFSET_TABLE_ or
8270 is pointing into a .got2 section (and how far
8271 into .got2). */
8272 info->callbacks->einfo
8273 /* xgettext:c-format */
8274 (_("%X%H: unsupported bss-plt -fPIC ifunc %s\n"),
8275 input_bfd, input_section, rel->r_offset, sym_name);
8276 }
8277 if (h == NULL && (ent->plt.offset & 1) == 0)
8278 {
8279 Elf_Internal_Rela rela;
8280 bfd_byte *loc;
8281
8282 rela.r_offset = (htab->elf.iplt->output_section->vma
8283 + htab->elf.iplt->output_offset
8284 + ent->plt.offset);
8285 rela.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
8286 rela.r_addend = relocation;
8287 loc = htab->elf.irelplt->contents;
8288 loc += (htab->elf.irelplt->reloc_count++
8289 * sizeof (Elf32_External_Rela));
8290 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
8291 htab->local_ifunc_resolver = 1;
8292
8293 ent->plt.offset |= 1;
8294 }
8295 if (h == NULL && (ent->glink_offset & 1) == 0)
8296 {
8297 unsigned char *p = ((unsigned char *) htab->glink->contents
8298 + ent->glink_offset);
8299
8300 write_glink_stub (NULL, ent, htab->elf.iplt, p, info);
8301 ent->glink_offset |= 1;
8302 }
8303
8304 unresolved_reloc = FALSE;
8305 if (htab->plt_type == PLT_NEW
8306 || !htab->elf.dynamic_sections_created
8307 || h == NULL
8308 || h->dynindx == -1)
8309 relocation = (htab->glink->output_section->vma
8310 + htab->glink->output_offset
8311 + (ent->glink_offset & ~1));
8312 else
8313 relocation = (htab->elf.splt->output_section->vma
8314 + htab->elf.splt->output_offset
8315 + ent->plt.offset);
8316 }
8317 }
8318
8319 addend = rel->r_addend;
8320 howto = NULL;
8321 if (r_type < R_PPC_max)
8322 howto = ppc_elf_howto_table[r_type];
8323
8324 switch (r_type)
8325 {
8326 default:
8327 break;
8328
8329 case R_PPC_TPREL16_HA:
8330 if (htab->do_tls_opt && relocation + addend + 0x8000 < 0x10000)
8331 {
8332 bfd_byte *p = contents + (rel->r_offset & ~3);
8333 unsigned int insn = bfd_get_32 (input_bfd, p);
8334 if ((insn & ((0x3f << 26) | 0x1f << 16))
8335 != ((15u << 26) | (2 << 16)) /* addis rt,2,imm */)
8336 /* xgettext:c-format */
8337 info->callbacks->minfo
8338 (_("%H: warning: %s unexpected insn %#x.\n"),
8339 input_bfd, input_section, rel->r_offset, howto->name, insn);
8340 else
8341 bfd_put_32 (input_bfd, NOP, p);
8342 }
8343 break;
8344
8345 case R_PPC_TPREL16_LO:
8346 if (htab->do_tls_opt && relocation + addend + 0x8000 < 0x10000)
8347 {
8348 bfd_byte *p = contents + (rel->r_offset & ~3);
8349 unsigned int insn = bfd_get_32 (input_bfd, p);
8350 insn &= ~(0x1f << 16);
8351 insn |= 2 << 16;
8352 bfd_put_32 (input_bfd, insn, p);
8353 }
8354 break;
8355 }
8356
8357 tls_type = 0;
8358 switch (r_type)
8359 {
8360 default:
8361 info->callbacks->einfo
8362 /* xgettext:c-format */
8363 (_("%P: %B: unknown relocation type %d for symbol %s\n"),
8364 input_bfd, (int) r_type, sym_name);
8365
8366 bfd_set_error (bfd_error_bad_value);
8367 ret = FALSE;
8368 goto copy_reloc;
8369
8370 case R_PPC_NONE:
8371 case R_PPC_TLS:
8372 case R_PPC_TLSGD:
8373 case R_PPC_TLSLD:
8374 case R_PPC_EMB_MRKREF:
8375 case R_PPC_GNU_VTINHERIT:
8376 case R_PPC_GNU_VTENTRY:
8377 goto copy_reloc;
8378
8379 /* GOT16 relocations. Like an ADDR16 using the symbol's
8380 address in the GOT as relocation value instead of the
8381 symbol's value itself. Also, create a GOT entry for the
8382 symbol and put the symbol value there. */
8383 case R_PPC_GOT_TLSGD16:
8384 case R_PPC_GOT_TLSGD16_LO:
8385 case R_PPC_GOT_TLSGD16_HI:
8386 case R_PPC_GOT_TLSGD16_HA:
8387 tls_type = TLS_TLS | TLS_GD;
8388 goto dogot;
8389
8390 case R_PPC_GOT_TLSLD16:
8391 case R_PPC_GOT_TLSLD16_LO:
8392 case R_PPC_GOT_TLSLD16_HI:
8393 case R_PPC_GOT_TLSLD16_HA:
8394 tls_type = TLS_TLS | TLS_LD;
8395 goto dogot;
8396
8397 case R_PPC_GOT_TPREL16:
8398 case R_PPC_GOT_TPREL16_LO:
8399 case R_PPC_GOT_TPREL16_HI:
8400 case R_PPC_GOT_TPREL16_HA:
8401 tls_type = TLS_TLS | TLS_TPREL;
8402 goto dogot;
8403
8404 case R_PPC_GOT_DTPREL16:
8405 case R_PPC_GOT_DTPREL16_LO:
8406 case R_PPC_GOT_DTPREL16_HI:
8407 case R_PPC_GOT_DTPREL16_HA:
8408 tls_type = TLS_TLS | TLS_DTPREL;
8409 goto dogot;
8410
8411 case R_PPC_GOT16:
8412 case R_PPC_GOT16_LO:
8413 case R_PPC_GOT16_HI:
8414 case R_PPC_GOT16_HA:
8415 tls_mask = 0;
8416 dogot:
8417 {
8418 /* Relocation is to the entry for this symbol in the global
8419 offset table. */
8420 bfd_vma off;
8421 bfd_vma *offp;
8422 unsigned long indx;
8423
8424 if (htab->elf.sgot == NULL)
8425 abort ();
8426
8427 indx = 0;
8428 if (tls_type == (TLS_TLS | TLS_LD)
8429 && (h == NULL
8430 || !h->def_dynamic))
8431 offp = &htab->tlsld_got.offset;
8432 else if (h != NULL)
8433 {
8434 if (!htab->elf.dynamic_sections_created
8435 || h->dynindx == -1
8436 || SYMBOL_REFERENCES_LOCAL (info, h)
8437 || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h))
8438 /* This is actually a static link, or it is a
8439 -Bsymbolic link and the symbol is defined
8440 locally, or the symbol was forced to be local
8441 because of a version file. */
8442 ;
8443 else
8444 {
8445 indx = h->dynindx;
8446 unresolved_reloc = FALSE;
8447 }
8448 offp = &h->got.offset;
8449 }
8450 else
8451 {
8452 if (local_got_offsets == NULL)
8453 abort ();
8454 offp = &local_got_offsets[r_symndx];
8455 }
8456
8457 /* The offset must always be a multiple of 4. We use the
8458 least significant bit to record whether we have already
8459 processed this entry. */
8460 off = *offp;
8461 if ((off & 1) != 0)
8462 off &= ~1;
8463 else
8464 {
8465 unsigned int tls_m = (tls_mask
8466 & (TLS_LD | TLS_GD | TLS_DTPREL
8467 | TLS_TPREL | TLS_TPRELGD));
8468
8469 if (offp == &htab->tlsld_got.offset)
8470 tls_m = TLS_LD;
8471 else if (h == NULL
8472 || !h->def_dynamic)
8473 tls_m &= ~TLS_LD;
8474
8475 /* We might have multiple got entries for this sym.
8476 Initialize them all. */
8477 do
8478 {
8479 int tls_ty = 0;
8480
8481 if ((tls_m & TLS_LD) != 0)
8482 {
8483 tls_ty = TLS_TLS | TLS_LD;
8484 tls_m &= ~TLS_LD;
8485 }
8486 else if ((tls_m & TLS_GD) != 0)
8487 {
8488 tls_ty = TLS_TLS | TLS_GD;
8489 tls_m &= ~TLS_GD;
8490 }
8491 else if ((tls_m & TLS_DTPREL) != 0)
8492 {
8493 tls_ty = TLS_TLS | TLS_DTPREL;
8494 tls_m &= ~TLS_DTPREL;
8495 }
8496 else if ((tls_m & (TLS_TPREL | TLS_TPRELGD)) != 0)
8497 {
8498 tls_ty = TLS_TLS | TLS_TPREL;
8499 tls_m = 0;
8500 }
8501
8502 /* Generate relocs for the dynamic linker. */
8503 if (indx != 0
8504 || (bfd_link_pic (info)
8505 && (h == NULL
8506 || !UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)
8507 || offp == &htab->tlsld_got.offset)
8508 && !(tls_ty == (TLS_TLS | TLS_TPREL)
8509 && bfd_link_executable (info)
8510 && SYMBOL_REFERENCES_LOCAL (info, h))))
8511 {
8512 asection *rsec = htab->elf.srelgot;
8513 bfd_byte * loc;
8514
8515 if (ifunc != NULL)
8516 {
8517 rsec = htab->elf.irelplt;
8518 if (indx == 0)
8519 htab->local_ifunc_resolver = 1;
8520 else if (is_static_defined (h))
8521 htab->maybe_local_ifunc_resolver = 1;
8522 }
8523 outrel.r_offset = (htab->elf.sgot->output_section->vma
8524 + htab->elf.sgot->output_offset
8525 + off);
8526 outrel.r_addend = 0;
8527 if (tls_ty & (TLS_LD | TLS_GD))
8528 {
8529 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPMOD32);
8530 if (tls_ty == (TLS_TLS | TLS_GD))
8531 {
8532 loc = rsec->contents;
8533 loc += (rsec->reloc_count++
8534 * sizeof (Elf32_External_Rela));
8535 bfd_elf32_swap_reloca_out (output_bfd,
8536 &outrel, loc);
8537 outrel.r_offset += 4;
8538 outrel.r_info
8539 = ELF32_R_INFO (indx, R_PPC_DTPREL32);
8540 }
8541 }
8542 else if (tls_ty == (TLS_TLS | TLS_DTPREL))
8543 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPREL32);
8544 else if (tls_ty == (TLS_TLS | TLS_TPREL))
8545 outrel.r_info = ELF32_R_INFO (indx, R_PPC_TPREL32);
8546 else if (indx != 0)
8547 outrel.r_info = ELF32_R_INFO (indx, R_PPC_GLOB_DAT);
8548 else if (ifunc != NULL)
8549 outrel.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
8550 else
8551 outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
8552 if (indx == 0 && tls_ty != (TLS_TLS | TLS_LD))
8553 {
8554 outrel.r_addend += relocation;
8555 if (tls_ty & (TLS_GD | TLS_DTPREL | TLS_TPREL))
8556 {
8557 if (htab->elf.tls_sec == NULL)
8558 outrel.r_addend = 0;
8559 else
8560 outrel.r_addend -= htab->elf.tls_sec->vma;
8561 }
8562 }
8563 loc = rsec->contents;
8564 loc += (rsec->reloc_count++
8565 * sizeof (Elf32_External_Rela));
8566 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
8567 }
8568
8569 /* Init the .got section contents if we're not
8570 emitting a reloc. */
8571 else
8572 {
8573 bfd_vma value = relocation;
8574
8575 if (tls_ty != 0)
8576 {
8577 if (htab->elf.tls_sec == NULL)
8578 value = 0;
8579 else
8580 {
8581 if (tls_ty & TLS_LD)
8582 value = 0;
8583 else
8584 value -= htab->elf.tls_sec->vma + DTP_OFFSET;
8585 if (tls_ty & TLS_TPREL)
8586 value += DTP_OFFSET - TP_OFFSET;
8587 }
8588
8589 if (tls_ty & (TLS_LD | TLS_GD))
8590 {
8591 bfd_put_32 (input_bfd, value,
8592 htab->elf.sgot->contents + off + 4);
8593 value = 1;
8594 }
8595 }
8596 bfd_put_32 (input_bfd, value,
8597 htab->elf.sgot->contents + off);
8598 }
8599
8600 off += 4;
8601 if (tls_ty & (TLS_LD | TLS_GD))
8602 off += 4;
8603 }
8604 while (tls_m != 0);
8605
8606 off = *offp;
8607 *offp = off | 1;
8608 }
8609
8610 if (off >= (bfd_vma) -2)
8611 abort ();
8612
8613 if ((tls_type & TLS_TLS) != 0)
8614 {
8615 if (tls_type != (TLS_TLS | TLS_LD))
8616 {
8617 if ((tls_mask & TLS_LD) != 0
8618 && !(h == NULL
8619 || !h->def_dynamic))
8620 off += 8;
8621 if (tls_type != (TLS_TLS | TLS_GD))
8622 {
8623 if ((tls_mask & TLS_GD) != 0)
8624 off += 8;
8625 if (tls_type != (TLS_TLS | TLS_DTPREL))
8626 {
8627 if ((tls_mask & TLS_DTPREL) != 0)
8628 off += 4;
8629 }
8630 }
8631 }
8632 }
8633
8634 /* If here for a picfixup, we're done. */
8635 if (r_type != ELF32_R_TYPE (rel->r_info))
8636 goto copy_reloc;
8637
8638 relocation = (htab->elf.sgot->output_section->vma
8639 + htab->elf.sgot->output_offset
8640 + off
8641 - SYM_VAL (htab->elf.hgot));
8642
8643 /* Addends on got relocations don't make much sense.
8644 x+off@got is actually x@got+off, and since the got is
8645 generated by a hash table traversal, the value in the
8646 got at entry m+n bears little relation to the entry m. */
8647 if (addend != 0)
8648 info->callbacks->einfo
8649 /* xgettext:c-format */
8650 (_("%H: non-zero addend on %s reloc against `%s'\n"),
8651 input_bfd, input_section, rel->r_offset,
8652 howto->name,
8653 sym_name);
8654 }
8655 break;
8656
8657 /* Relocations that need no special processing. */
8658 case R_PPC_LOCAL24PC:
8659 /* It makes no sense to point a local relocation
8660 at a symbol not in this object. */
8661 if (unresolved_reloc)
8662 {
8663 (*info->callbacks->undefined_symbol) (info,
8664 h->root.root.string,
8665 input_bfd,
8666 input_section,
8667 rel->r_offset,
8668 TRUE);
8669 goto copy_reloc;
8670 }
8671 if (h != NULL && h->type == STT_GNU_IFUNC && bfd_link_pic (info))
8672 {
8673 /* @local on an ifunc does not really make sense since
8674 the ifunc resolver can take you anywhere. More
8675 seriously, calls to ifuncs must go through a plt call
8676 stub, and for pic the plt call stubs uses r30 to
8677 access the PLT. The problem is that a call that is
8678 local won't have the +32k reloc addend trick marking
8679 -fPIC code, so the linker won't know whether r30 is
8680 _GLOBAL_OFFSET_TABLE_ or pointing into a .got2 section. */
8681 /* xgettext:c-format */
8682 info->callbacks->einfo (_("%X%H: @local call to ifunc %s\n"),
8683 input_bfd, input_section, rel->r_offset,
8684 h->root.root.string);
8685 }
8686 break;
8687
8688 case R_PPC_DTPREL16:
8689 case R_PPC_DTPREL16_LO:
8690 case R_PPC_DTPREL16_HI:
8691 case R_PPC_DTPREL16_HA:
8692 if (htab->elf.tls_sec != NULL)
8693 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
8694 break;
8695
8696 /* Relocations that may need to be propagated if this is a shared
8697 object. */
8698 case R_PPC_TPREL16:
8699 case R_PPC_TPREL16_LO:
8700 case R_PPC_TPREL16_HI:
8701 case R_PPC_TPREL16_HA:
8702 if (h != NULL
8703 && h->root.type == bfd_link_hash_undefweak
8704 && h->dynindx == -1)
8705 {
8706 /* Make this relocation against an undefined weak symbol
8707 resolve to zero. This is really just a tweak, since
8708 code using weak externs ought to check that they are
8709 defined before using them. */
8710 bfd_byte *p = contents + rel->r_offset - d_offset;
8711 unsigned int insn = bfd_get_32 (input_bfd, p);
8712 insn = _bfd_elf_ppc_at_tprel_transform (insn, 2);
8713 if (insn != 0)
8714 bfd_put_32 (input_bfd, insn, p);
8715 break;
8716 }
8717 if (htab->elf.tls_sec != NULL)
8718 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
8719 /* The TPREL16 relocs shouldn't really be used in shared
8720 libs or with non-local symbols as that will result in
8721 DT_TEXTREL being set, but support them anyway. */
8722 goto dodyn;
8723
8724 case R_PPC_TPREL32:
8725 if (htab->elf.tls_sec != NULL)
8726 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
8727 goto dodyn;
8728
8729 case R_PPC_DTPREL32:
8730 if (htab->elf.tls_sec != NULL)
8731 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
8732 goto dodyn;
8733
8734 case R_PPC_DTPMOD32:
8735 relocation = 1;
8736 addend = 0;
8737 goto dodyn;
8738
8739 case R_PPC_REL16:
8740 case R_PPC_REL16_LO:
8741 case R_PPC_REL16_HI:
8742 case R_PPC_REL16_HA:
8743 case R_PPC_REL16DX_HA:
8744 break;
8745
8746 case R_PPC_REL32:
8747 if (h == NULL || h == htab->elf.hgot)
8748 break;
8749 /* fall through */
8750
8751 case R_PPC_ADDR32:
8752 case R_PPC_ADDR16:
8753 case R_PPC_ADDR16_LO:
8754 case R_PPC_ADDR16_HI:
8755 case R_PPC_ADDR16_HA:
8756 case R_PPC_UADDR32:
8757 case R_PPC_UADDR16:
8758 goto dodyn;
8759
8760 case R_PPC_VLE_REL8:
8761 case R_PPC_VLE_REL15:
8762 case R_PPC_VLE_REL24:
8763 case R_PPC_REL24:
8764 case R_PPC_REL14:
8765 case R_PPC_REL14_BRTAKEN:
8766 case R_PPC_REL14_BRNTAKEN:
8767 /* If these relocations are not to a named symbol, they can be
8768 handled right here, no need to bother the dynamic linker. */
8769 if (SYMBOL_CALLS_LOCAL (info, h)
8770 || h == htab->elf.hgot)
8771 break;
8772 /* fall through */
8773
8774 case R_PPC_ADDR24:
8775 case R_PPC_ADDR14:
8776 case R_PPC_ADDR14_BRTAKEN:
8777 case R_PPC_ADDR14_BRNTAKEN:
8778 if (h != NULL && !bfd_link_pic (info))
8779 break;
8780 /* fall through */
8781
8782 dodyn:
8783 if ((input_section->flags & SEC_ALLOC) == 0
8784 || is_vxworks_tls)
8785 break;
8786
8787 if (bfd_link_pic (info)
8788 ? ((h == NULL
8789 || ppc_elf_hash_entry (h)->dyn_relocs != NULL)
8790 && ((h != NULL && pc_dynrelocs (h))
8791 || must_be_dyn_reloc (info, r_type)))
8792 : (h != NULL
8793 && ppc_elf_hash_entry (h)->dyn_relocs != NULL))
8794 {
8795 int skip;
8796 bfd_byte *loc;
8797 asection *sreloc;
8798 long indx = 0;
8799
8800 #ifdef DEBUG
8801 fprintf (stderr, "ppc_elf_relocate_section needs to "
8802 "create relocation for %s\n",
8803 (h && h->root.root.string
8804 ? h->root.root.string : "<unknown>"));
8805 #endif
8806
8807 /* When generating a shared object, these relocations
8808 are copied into the output file to be resolved at run
8809 time. */
8810 skip = 0;
8811 outrel.r_offset = _bfd_elf_section_offset (output_bfd, info,
8812 input_section,
8813 rel->r_offset);
8814 if (outrel.r_offset == (bfd_vma) -1
8815 || outrel.r_offset == (bfd_vma) -2)
8816 skip = (int) outrel.r_offset;
8817 outrel.r_offset += (input_section->output_section->vma
8818 + input_section->output_offset);
8819
8820 if (skip)
8821 memset (&outrel, 0, sizeof outrel);
8822 else if (!SYMBOL_REFERENCES_LOCAL (info, h))
8823 {
8824 indx = h->dynindx;
8825 BFD_ASSERT (indx != -1);
8826 unresolved_reloc = FALSE;
8827 outrel.r_info = ELF32_R_INFO (indx, r_type);
8828 outrel.r_addend = rel->r_addend;
8829 }
8830 else
8831 {
8832 outrel.r_addend = relocation + rel->r_addend;
8833
8834 if (r_type != R_PPC_ADDR32)
8835 {
8836 if (ifunc != NULL)
8837 {
8838 /* If we get here when building a static
8839 executable, then the libc startup function
8840 responsible for applying indirect function
8841 relocations is going to complain about
8842 the reloc type.
8843 If we get here when building a dynamic
8844 executable, it will be because we have
8845 a text relocation. The dynamic loader
8846 will set the text segment writable and
8847 non-executable to apply text relocations.
8848 So we'll segfault when trying to run the
8849 indirection function to resolve the reloc. */
8850 info->callbacks->einfo
8851 /* xgettext:c-format */
8852 (_("%H: relocation %s for indirect "
8853 "function %s unsupported\n"),
8854 input_bfd, input_section, rel->r_offset,
8855 howto->name,
8856 sym_name);
8857 ret = FALSE;
8858 }
8859 else if (r_symndx == STN_UNDEF || bfd_is_abs_section (sec))
8860 ;
8861 else if (sec == NULL || sec->owner == NULL)
8862 {
8863 bfd_set_error (bfd_error_bad_value);
8864 ret = FALSE;
8865 }
8866 else
8867 {
8868 asection *osec;
8869
8870 /* We are turning this relocation into one
8871 against a section symbol. It would be
8872 proper to subtract the symbol's value,
8873 osec->vma, from the emitted reloc addend,
8874 but ld.so expects buggy relocs.
8875 FIXME: Why not always use a zero index? */
8876 osec = sec->output_section;
8877 indx = elf_section_data (osec)->dynindx;
8878 if (indx == 0)
8879 {
8880 osec = htab->elf.text_index_section;
8881 indx = elf_section_data (osec)->dynindx;
8882 }
8883 BFD_ASSERT (indx != 0);
8884 #ifdef DEBUG
8885 if (indx == 0)
8886 printf ("indx=%ld section=%s flags=%08x name=%s\n",
8887 indx, osec->name, osec->flags,
8888 h->root.root.string);
8889 #endif
8890 }
8891
8892 outrel.r_info = ELF32_R_INFO (indx, r_type);
8893 }
8894 else if (ifunc != NULL)
8895 outrel.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
8896 else
8897 outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
8898 }
8899
8900 sreloc = elf_section_data (input_section)->sreloc;
8901 if (ifunc)
8902 {
8903 sreloc = htab->elf.irelplt;
8904 if (indx == 0)
8905 htab->local_ifunc_resolver = 1;
8906 else if (is_static_defined (h))
8907 htab->maybe_local_ifunc_resolver = 1;
8908 }
8909 if (sreloc == NULL)
8910 return FALSE;
8911
8912 loc = sreloc->contents;
8913 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
8914 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
8915
8916 if (skip == -1)
8917 goto copy_reloc;
8918
8919 /* This reloc will be computed at runtime. Clear the memory
8920 so that it contains a predictable value for prelink. */
8921 if (!skip)
8922 {
8923 relocation = howto->pc_relative ? outrel.r_offset : 0;
8924 addend = 0;
8925 break;
8926 }
8927 }
8928 break;
8929
8930 case R_PPC_RELAX_PLT:
8931 case R_PPC_RELAX_PLTREL24:
8932 if (h != NULL)
8933 {
8934 struct plt_entry *ent;
8935 bfd_vma got2_addend = 0;
8936
8937 if (r_type == R_PPC_RELAX_PLTREL24)
8938 {
8939 if (bfd_link_pic (info))
8940 got2_addend = addend;
8941 addend = 0;
8942 }
8943 ent = find_plt_ent (&h->plt.plist, got2, got2_addend);
8944 if (htab->plt_type == PLT_NEW)
8945 relocation = (htab->glink->output_section->vma
8946 + htab->glink->output_offset
8947 + ent->glink_offset);
8948 else
8949 relocation = (htab->elf.splt->output_section->vma
8950 + htab->elf.splt->output_offset
8951 + ent->plt.offset);
8952 }
8953 /* Fall through. */
8954
8955 case R_PPC_RELAX:
8956 {
8957 const int *stub;
8958 size_t size;
8959 size_t insn_offset = rel->r_offset;
8960 unsigned int insn;
8961
8962 if (bfd_link_pic (info))
8963 {
8964 relocation -= (input_section->output_section->vma
8965 + input_section->output_offset
8966 + rel->r_offset - 4);
8967 stub = shared_stub_entry;
8968 bfd_put_32 (input_bfd, stub[0], contents + insn_offset - 12);
8969 bfd_put_32 (input_bfd, stub[1], contents + insn_offset - 8);
8970 bfd_put_32 (input_bfd, stub[2], contents + insn_offset - 4);
8971 stub += 3;
8972 size = ARRAY_SIZE (shared_stub_entry) - 3;
8973 }
8974 else
8975 {
8976 stub = stub_entry;
8977 size = ARRAY_SIZE (stub_entry);
8978 }
8979 --size;
8980
8981 relocation += addend;
8982 if (bfd_link_relocatable (info))
8983 relocation = 0;
8984
8985 /* First insn is HA, second is LO. */
8986 insn = *stub++;
8987 insn |= ((relocation + 0x8000) >> 16) & 0xffff;
8988 bfd_put_32 (input_bfd, insn, contents + insn_offset);
8989 insn_offset += 4;
8990
8991 insn = *stub++;
8992 insn |= relocation & 0xffff;
8993 bfd_put_32 (input_bfd, insn, contents + insn_offset);
8994 insn_offset += 4;
8995 size -= 2;
8996
8997 while (size != 0)
8998 {
8999 insn = *stub++;
9000 --size;
9001 bfd_put_32 (input_bfd, insn, contents + insn_offset);
9002 insn_offset += 4;
9003 }
9004 output_bctr (htab, input_bfd, contents + insn_offset);
9005
9006 /* Rewrite the reloc and convert one of the trailing nop
9007 relocs to describe this relocation. */
9008 BFD_ASSERT (ELF32_R_TYPE (relend[-1].r_info) == R_PPC_NONE);
9009 /* The relocs are at the bottom 2 bytes */
9010 wrel->r_offset = rel->r_offset + d_offset;
9011 wrel->r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_HA);
9012 wrel->r_addend = rel->r_addend;
9013 memmove (wrel + 1, wrel, (relend - wrel - 1) * sizeof (*wrel));
9014 wrel++, rel++;
9015 wrel->r_offset += 4;
9016 wrel->r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_LO);
9017 }
9018 continue;
9019
9020 /* Indirect .sdata relocation. */
9021 case R_PPC_EMB_SDAI16:
9022 BFD_ASSERT (htab->sdata[0].section != NULL);
9023 if (!is_static_defined (htab->sdata[0].sym))
9024 {
9025 unresolved_reloc = TRUE;
9026 break;
9027 }
9028 relocation
9029 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[0],
9030 h, relocation, rel);
9031 addend = 0;
9032 break;
9033
9034 /* Indirect .sdata2 relocation. */
9035 case R_PPC_EMB_SDA2I16:
9036 BFD_ASSERT (htab->sdata[1].section != NULL);
9037 if (!is_static_defined (htab->sdata[1].sym))
9038 {
9039 unresolved_reloc = TRUE;
9040 break;
9041 }
9042 relocation
9043 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[1],
9044 h, relocation, rel);
9045 addend = 0;
9046 break;
9047
9048 /* Handle the TOC16 reloc. We want to use the offset within the .got
9049 section, not the actual VMA. This is appropriate when generating
9050 an embedded ELF object, for which the .got section acts like the
9051 AIX .toc section. */
9052 case R_PPC_TOC16: /* phony GOT16 relocations */
9053 if (sec == NULL || sec->output_section == NULL)
9054 {
9055 unresolved_reloc = TRUE;
9056 break;
9057 }
9058 BFD_ASSERT (strcmp (bfd_get_section_name (sec->owner, sec),
9059 ".got") == 0
9060 || strcmp (bfd_get_section_name (sec->owner, sec),
9061 ".cgot") == 0);
9062
9063 addend -= sec->output_section->vma + sec->output_offset + 0x8000;
9064 break;
9065
9066 case R_PPC_PLTREL24:
9067 if (h != NULL && ifunc == NULL)
9068 {
9069 struct plt_entry *ent;
9070
9071 ent = find_plt_ent (&h->plt.plist, got2,
9072 bfd_link_pic (info) ? addend : 0);
9073 if (ent == NULL
9074 || htab->elf.splt == NULL)
9075 {
9076 /* We didn't make a PLT entry for this symbol. This
9077 happens when statically linking PIC code, or when
9078 using -Bsymbolic. */
9079 }
9080 else
9081 {
9082 /* Relocation is to the entry for this symbol in the
9083 procedure linkage table. */
9084 unresolved_reloc = FALSE;
9085 if (htab->plt_type == PLT_NEW)
9086 relocation = (htab->glink->output_section->vma
9087 + htab->glink->output_offset
9088 + ent->glink_offset);
9089 else
9090 relocation = (htab->elf.splt->output_section->vma
9091 + htab->elf.splt->output_offset
9092 + ent->plt.offset);
9093 }
9094 }
9095
9096 /* R_PPC_PLTREL24 is rather special. If non-zero, the
9097 addend specifies the GOT pointer offset within .got2.
9098 Don't apply it to the relocation field. */
9099 addend = 0;
9100 break;
9101
9102 /* Relocate against _SDA_BASE_. */
9103 case R_PPC_SDAREL16:
9104 {
9105 const char *name;
9106 struct elf_link_hash_entry *sda = htab->sdata[0].sym;
9107
9108 if (sec == NULL
9109 || sec->output_section == NULL
9110 || !is_static_defined (sda))
9111 {
9112 unresolved_reloc = TRUE;
9113 break;
9114 }
9115 addend -= SYM_VAL (sda);
9116
9117 name = bfd_get_section_name (output_bfd, sec->output_section);
9118 if (!(strcmp (name, ".sdata") == 0
9119 || strcmp (name, ".sbss") == 0))
9120 {
9121 info->callbacks->einfo
9122 /* xgettext:c-format */
9123 (_("%P: %B: the target (%s) of a %s relocation is "
9124 "in the wrong output section (%s)\n"),
9125 input_bfd,
9126 sym_name,
9127 howto->name,
9128 name);
9129 }
9130 }
9131 break;
9132
9133 /* Relocate against _SDA2_BASE_. */
9134 case R_PPC_EMB_SDA2REL:
9135 {
9136 const char *name;
9137 struct elf_link_hash_entry *sda = htab->sdata[1].sym;
9138
9139 if (sec == NULL
9140 || sec->output_section == NULL
9141 || !is_static_defined (sda))
9142 {
9143 unresolved_reloc = TRUE;
9144 break;
9145 }
9146 addend -= SYM_VAL (sda);
9147
9148 name = bfd_get_section_name (output_bfd, sec->output_section);
9149 if (!(strcmp (name, ".sdata2") == 0
9150 || strcmp (name, ".sbss2") == 0))
9151 {
9152 info->callbacks->einfo
9153 /* xgettext:c-format */
9154 (_("%P: %B: the target (%s) of a %s relocation is "
9155 "in the wrong output section (%s)\n"),
9156 input_bfd,
9157 sym_name,
9158 howto->name,
9159 name);
9160 }
9161 }
9162 break;
9163
9164 case R_PPC_VLE_LO16A:
9165 relocation = relocation + addend;
9166 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9167 contents + rel->r_offset, relocation,
9168 split16a_type, htab->params->vle_reloc_fixup);
9169 goto copy_reloc;
9170
9171 case R_PPC_VLE_LO16D:
9172 relocation = relocation + addend;
9173 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9174 contents + rel->r_offset, relocation,
9175 split16d_type, htab->params->vle_reloc_fixup);
9176 goto copy_reloc;
9177
9178 case R_PPC_VLE_HI16A:
9179 relocation = (relocation + addend) >> 16;
9180 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9181 contents + rel->r_offset, relocation,
9182 split16a_type, htab->params->vle_reloc_fixup);
9183 goto copy_reloc;
9184
9185 case R_PPC_VLE_HI16D:
9186 relocation = (relocation + addend) >> 16;
9187 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9188 contents + rel->r_offset, relocation,
9189 split16d_type, htab->params->vle_reloc_fixup);
9190 goto copy_reloc;
9191
9192 case R_PPC_VLE_HA16A:
9193 relocation = (relocation + addend + 0x8000) >> 16;
9194 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9195 contents + rel->r_offset, relocation,
9196 split16a_type, htab->params->vle_reloc_fixup);
9197 goto copy_reloc;
9198
9199 case R_PPC_VLE_HA16D:
9200 relocation = (relocation + addend + 0x8000) >> 16;
9201 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9202 contents + rel->r_offset, relocation,
9203 split16d_type, htab->params->vle_reloc_fixup);
9204 goto copy_reloc;
9205
9206 /* Relocate against either _SDA_BASE_, _SDA2_BASE_, or 0. */
9207 case R_PPC_EMB_SDA21:
9208 case R_PPC_VLE_SDA21:
9209 case R_PPC_EMB_RELSDA:
9210 case R_PPC_VLE_SDA21_LO:
9211 {
9212 const char *name;
9213 int reg;
9214 unsigned int insn;
9215 struct elf_link_hash_entry *sda = NULL;
9216
9217 if (sec == NULL || sec->output_section == NULL)
9218 {
9219 unresolved_reloc = TRUE;
9220 break;
9221 }
9222
9223 name = bfd_get_section_name (output_bfd, sec->output_section);
9224 if (strcmp (name, ".sdata") == 0
9225 || strcmp (name, ".sbss") == 0)
9226 {
9227 reg = 13;
9228 sda = htab->sdata[0].sym;
9229 }
9230 else if (strcmp (name, ".sdata2") == 0
9231 || strcmp (name, ".sbss2") == 0)
9232 {
9233 reg = 2;
9234 sda = htab->sdata[1].sym;
9235 }
9236 else if (strcmp (name, ".PPC.EMB.sdata0") == 0
9237 || strcmp (name, ".PPC.EMB.sbss0") == 0)
9238 {
9239 reg = 0;
9240 }
9241 else
9242 {
9243 info->callbacks->einfo
9244 /* xgettext:c-format */
9245 (_("%P: %B: the target (%s) of a %s relocation is "
9246 "in the wrong output section (%s)\n"),
9247 input_bfd,
9248 sym_name,
9249 howto->name,
9250 name);
9251
9252 bfd_set_error (bfd_error_bad_value);
9253 ret = FALSE;
9254 goto copy_reloc;
9255 }
9256
9257 if (sda != NULL)
9258 {
9259 if (!is_static_defined (sda))
9260 {
9261 unresolved_reloc = TRUE;
9262 break;
9263 }
9264 addend -= SYM_VAL (sda);
9265 }
9266
9267 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
9268 if (reg == 0
9269 && (r_type == R_PPC_VLE_SDA21
9270 || r_type == R_PPC_VLE_SDA21_LO))
9271 {
9272 relocation = relocation + addend;
9273 addend = 0;
9274
9275 /* Force e_li insn, keeping RT from original insn. */
9276 insn &= 0x1f << 21;
9277 insn |= 28u << 26;
9278
9279 /* We have an li20 field, bits 17..20, 11..15, 21..31. */
9280 /* Top 4 bits of value to 17..20. */
9281 insn |= (relocation & 0xf0000) >> 5;
9282 /* Next 5 bits of the value to 11..15. */
9283 insn |= (relocation & 0xf800) << 5;
9284 /* And the final 11 bits of the value to bits 21 to 31. */
9285 insn |= relocation & 0x7ff;
9286
9287 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
9288
9289 if (r_type == R_PPC_VLE_SDA21
9290 && ((relocation + 0x80000) & 0xffffffff) > 0x100000)
9291 goto overflow;
9292 goto copy_reloc;
9293 }
9294 else if (r_type == R_PPC_EMB_SDA21
9295 || r_type == R_PPC_VLE_SDA21
9296 || r_type == R_PPC_VLE_SDA21_LO)
9297 {
9298 /* Fill in register field. */
9299 insn = (insn & ~RA_REGISTER_MASK) | (reg << RA_REGISTER_SHIFT);
9300 }
9301 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
9302 }
9303 break;
9304
9305 case R_PPC_VLE_SDAREL_LO16A:
9306 case R_PPC_VLE_SDAREL_LO16D:
9307 case R_PPC_VLE_SDAREL_HI16A:
9308 case R_PPC_VLE_SDAREL_HI16D:
9309 case R_PPC_VLE_SDAREL_HA16A:
9310 case R_PPC_VLE_SDAREL_HA16D:
9311 {
9312 bfd_vma value;
9313 const char *name;
9314 struct elf_link_hash_entry *sda = NULL;
9315
9316 if (sec == NULL || sec->output_section == NULL)
9317 {
9318 unresolved_reloc = TRUE;
9319 break;
9320 }
9321
9322 name = bfd_get_section_name (output_bfd, sec->output_section);
9323 if (strcmp (name, ".sdata") == 0
9324 || strcmp (name, ".sbss") == 0)
9325 sda = htab->sdata[0].sym;
9326 else if (strcmp (name, ".sdata2") == 0
9327 || strcmp (name, ".sbss2") == 0)
9328 sda = htab->sdata[1].sym;
9329 else
9330 {
9331 _bfd_error_handler
9332 /* xgettext:c-format */
9333 (_("%B: the target (%s) of a %s relocation is "
9334 "in the wrong output section (%s)"),
9335 input_bfd,
9336 sym_name,
9337 howto->name,
9338 name);
9339
9340 bfd_set_error (bfd_error_bad_value);
9341 ret = FALSE;
9342 goto copy_reloc;
9343 }
9344
9345 if (sda == NULL || !is_static_defined (sda))
9346 {
9347 unresolved_reloc = TRUE;
9348 break;
9349 }
9350 value = relocation + addend - SYM_VAL (sda);
9351
9352 if (r_type == R_PPC_VLE_SDAREL_LO16A)
9353 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9354 contents + rel->r_offset, value,
9355 split16a_type,
9356 htab->params->vle_reloc_fixup);
9357 else if (r_type == R_PPC_VLE_SDAREL_LO16D)
9358 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9359 contents + rel->r_offset, value,
9360 split16d_type,
9361 htab->params->vle_reloc_fixup);
9362 else if (r_type == R_PPC_VLE_SDAREL_HI16A)
9363 {
9364 value = value >> 16;
9365 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9366 contents + rel->r_offset, value,
9367 split16a_type,
9368 htab->params->vle_reloc_fixup);
9369 }
9370 else if (r_type == R_PPC_VLE_SDAREL_HI16D)
9371 {
9372 value = value >> 16;
9373 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9374 contents + rel->r_offset, value,
9375 split16d_type,
9376 htab->params->vle_reloc_fixup);
9377 }
9378 else if (r_type == R_PPC_VLE_SDAREL_HA16A)
9379 {
9380 value = (value + 0x8000) >> 16;
9381 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9382 contents + rel->r_offset, value,
9383 split16a_type,
9384 htab->params->vle_reloc_fixup);
9385 }
9386 else if (r_type == R_PPC_VLE_SDAREL_HA16D)
9387 {
9388 value = (value + 0x8000) >> 16;
9389 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9390 contents + rel->r_offset, value,
9391 split16d_type,
9392 htab->params->vle_reloc_fixup);
9393 }
9394 }
9395 goto copy_reloc;
9396
9397 case R_PPC_VLE_ADDR20:
9398 ppc_elf_vle_split20 (output_bfd, contents + rel->r_offset, relocation);
9399 continue;
9400
9401 /* Relocate against the beginning of the section. */
9402 case R_PPC_SECTOFF:
9403 case R_PPC_SECTOFF_LO:
9404 case R_PPC_SECTOFF_HI:
9405 case R_PPC_SECTOFF_HA:
9406 if (sec == NULL || sec->output_section == NULL)
9407 {
9408 unresolved_reloc = TRUE;
9409 break;
9410 }
9411 addend -= sec->output_section->vma;
9412 break;
9413
9414 /* Negative relocations. */
9415 case R_PPC_EMB_NADDR32:
9416 case R_PPC_EMB_NADDR16:
9417 case R_PPC_EMB_NADDR16_LO:
9418 case R_PPC_EMB_NADDR16_HI:
9419 case R_PPC_EMB_NADDR16_HA:
9420 addend -= 2 * relocation;
9421 break;
9422
9423 case R_PPC_COPY:
9424 case R_PPC_GLOB_DAT:
9425 case R_PPC_JMP_SLOT:
9426 case R_PPC_RELATIVE:
9427 case R_PPC_IRELATIVE:
9428 case R_PPC_PLT32:
9429 case R_PPC_PLTREL32:
9430 case R_PPC_PLT16_LO:
9431 case R_PPC_PLT16_HI:
9432 case R_PPC_PLT16_HA:
9433 case R_PPC_ADDR30:
9434 case R_PPC_EMB_RELSEC16:
9435 case R_PPC_EMB_RELST_LO:
9436 case R_PPC_EMB_RELST_HI:
9437 case R_PPC_EMB_RELST_HA:
9438 case R_PPC_EMB_BIT_FLD:
9439 info->callbacks->einfo
9440 /* xgettext:c-format */
9441 (_("%P: %B: relocation %s is not yet supported for symbol %s\n"),
9442 input_bfd,
9443 howto->name,
9444 sym_name);
9445
9446 bfd_set_error (bfd_error_invalid_operation);
9447 ret = FALSE;
9448 goto copy_reloc;
9449 }
9450
9451 /* Do any further special processing. */
9452 switch (r_type)
9453 {
9454 default:
9455 break;
9456
9457 case R_PPC_ADDR16_HA:
9458 case R_PPC_REL16_HA:
9459 case R_PPC_REL16DX_HA:
9460 case R_PPC_SECTOFF_HA:
9461 case R_PPC_TPREL16_HA:
9462 case R_PPC_DTPREL16_HA:
9463 case R_PPC_EMB_NADDR16_HA:
9464 case R_PPC_EMB_RELST_HA:
9465 /* It's just possible that this symbol is a weak symbol
9466 that's not actually defined anywhere. In that case,
9467 'sec' would be NULL, and we should leave the symbol
9468 alone (it will be set to zero elsewhere in the link). */
9469 if (sec == NULL)
9470 break;
9471 /* Fall through. */
9472
9473 case R_PPC_PLT16_HA:
9474 case R_PPC_GOT16_HA:
9475 case R_PPC_GOT_TLSGD16_HA:
9476 case R_PPC_GOT_TLSLD16_HA:
9477 case R_PPC_GOT_TPREL16_HA:
9478 case R_PPC_GOT_DTPREL16_HA:
9479 /* Add 0x10000 if sign bit in 0:15 is set.
9480 Bits 0:15 are not used. */
9481 addend += 0x8000;
9482 break;
9483
9484 case R_PPC_ADDR16:
9485 case R_PPC_ADDR16_LO:
9486 case R_PPC_GOT16:
9487 case R_PPC_GOT16_LO:
9488 case R_PPC_SDAREL16:
9489 case R_PPC_SECTOFF:
9490 case R_PPC_SECTOFF_LO:
9491 case R_PPC_DTPREL16:
9492 case R_PPC_DTPREL16_LO:
9493 case R_PPC_TPREL16:
9494 case R_PPC_TPREL16_LO:
9495 case R_PPC_GOT_TLSGD16:
9496 case R_PPC_GOT_TLSGD16_LO:
9497 case R_PPC_GOT_TLSLD16:
9498 case R_PPC_GOT_TLSLD16_LO:
9499 case R_PPC_GOT_DTPREL16:
9500 case R_PPC_GOT_DTPREL16_LO:
9501 case R_PPC_GOT_TPREL16:
9502 case R_PPC_GOT_TPREL16_LO:
9503 {
9504 /* The 32-bit ABI lacks proper relocations to deal with
9505 certain 64-bit instructions. Prevent damage to bits
9506 that make up part of the insn opcode. */
9507 unsigned int insn, mask, lobit;
9508
9509 insn = bfd_get_32 (input_bfd,
9510 contents + rel->r_offset - d_offset);
9511 mask = 0;
9512 if (is_insn_ds_form (insn))
9513 mask = 3;
9514 else if (is_insn_dq_form (insn))
9515 mask = 15;
9516 else
9517 break;
9518 relocation += addend;
9519 addend = insn & mask;
9520 lobit = mask & relocation;
9521 if (lobit != 0)
9522 {
9523 relocation ^= lobit;
9524 info->callbacks->einfo
9525 /* xgettext:c-format */
9526 (_("%H: error: %s against `%s' not a multiple of %u\n"),
9527 input_bfd, input_section, rel->r_offset,
9528 howto->name, sym_name, mask + 1);
9529 bfd_set_error (bfd_error_bad_value);
9530 ret = FALSE;
9531 }
9532 }
9533 break;
9534 }
9535
9536 #ifdef DEBUG
9537 fprintf (stderr, "\ttype = %s (%d), name = %s, symbol index = %ld, "
9538 "offset = %ld, addend = %ld\n",
9539 howto->name,
9540 (int) r_type,
9541 sym_name,
9542 r_symndx,
9543 (long) rel->r_offset,
9544 (long) addend);
9545 #endif
9546
9547 if (unresolved_reloc
9548 && !((input_section->flags & SEC_DEBUGGING) != 0
9549 && h->def_dynamic)
9550 && _bfd_elf_section_offset (output_bfd, info, input_section,
9551 rel->r_offset) != (bfd_vma) -1)
9552 {
9553 info->callbacks->einfo
9554 /* xgettext:c-format */
9555 (_("%H: unresolvable %s relocation against symbol `%s'\n"),
9556 input_bfd, input_section, rel->r_offset,
9557 howto->name,
9558 sym_name);
9559 ret = FALSE;
9560 }
9561
9562 /* 16-bit fields in insns mostly have signed values, but a
9563 few insns have 16-bit unsigned values. Really, we should
9564 have different reloc types. */
9565 if (howto->complain_on_overflow != complain_overflow_dont
9566 && howto->dst_mask == 0xffff
9567 && (input_section->flags & SEC_CODE) != 0)
9568 {
9569 enum complain_overflow complain = complain_overflow_signed;
9570
9571 if ((elf_section_flags (input_section) & SHF_PPC_VLE) == 0)
9572 {
9573 unsigned int insn;
9574
9575 insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
9576 if ((insn & (0x3f << 26)) == 10u << 26 /* cmpli */)
9577 complain = complain_overflow_bitfield;
9578 else if ((insn & (0x3f << 26)) == 28u << 26 /* andi */
9579 || (insn & (0x3f << 26)) == 24u << 26 /* ori */
9580 || (insn & (0x3f << 26)) == 26u << 26 /* xori */)
9581 complain = complain_overflow_unsigned;
9582 }
9583 if (howto->complain_on_overflow != complain)
9584 {
9585 alt_howto = *howto;
9586 alt_howto.complain_on_overflow = complain;
9587 howto = &alt_howto;
9588 }
9589 }
9590
9591 if (r_type == R_PPC_REL16DX_HA)
9592 {
9593 /* Split field reloc isn't handled by _bfd_final_link_relocate. */
9594 if (rel->r_offset + 4 > input_section->size)
9595 r = bfd_reloc_outofrange;
9596 else
9597 {
9598 unsigned int insn;
9599
9600 relocation += addend;
9601 relocation -= (rel->r_offset
9602 + input_section->output_offset
9603 + input_section->output_section->vma);
9604 relocation >>= 16;
9605 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
9606 insn &= ~0x1fffc1;
9607 insn |= (relocation & 0xffc1) | ((relocation & 0x3e) << 15);
9608 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
9609 r = bfd_reloc_ok;
9610 }
9611 }
9612 else
9613 r = _bfd_final_link_relocate (howto, input_bfd, input_section, contents,
9614 rel->r_offset, relocation, addend);
9615
9616 if (r != bfd_reloc_ok)
9617 {
9618 if (r == bfd_reloc_overflow)
9619 {
9620 overflow:
9621 /* On code like "if (foo) foo();" don't report overflow
9622 on a branch to zero when foo is undefined. */
9623 if (!warned
9624 && !(h != NULL
9625 && (h->root.type == bfd_link_hash_undefweak
9626 || h->root.type == bfd_link_hash_undefined)
9627 && is_branch_reloc (r_type)))
9628 info->callbacks->reloc_overflow
9629 (info, (h ? &h->root : NULL), sym_name, howto->name,
9630 rel->r_addend, input_bfd, input_section, rel->r_offset);
9631 }
9632 else
9633 {
9634 info->callbacks->einfo
9635 /* xgettext:c-format */
9636 (_("%H: %s reloc against `%s': error %d\n"),
9637 input_bfd, input_section, rel->r_offset,
9638 howto->name, sym_name, (int) r);
9639 ret = FALSE;
9640 }
9641 }
9642 copy_reloc:
9643 if (wrel != rel)
9644 *wrel = *rel;
9645 }
9646
9647 if (wrel != rel)
9648 {
9649 Elf_Internal_Shdr *rel_hdr;
9650 size_t deleted = rel - wrel;
9651
9652 rel_hdr = _bfd_elf_single_rel_hdr (input_section->output_section);
9653 rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted;
9654 if (rel_hdr->sh_size == 0)
9655 {
9656 /* It is too late to remove an empty reloc section. Leave
9657 one NONE reloc.
9658 ??? What is wrong with an empty section??? */
9659 rel_hdr->sh_size = rel_hdr->sh_entsize;
9660 deleted -= 1;
9661 wrel++;
9662 }
9663 relend = wrel;
9664 rel_hdr = _bfd_elf_single_rel_hdr (input_section);
9665 rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted;
9666 input_section->reloc_count -= deleted;
9667 }
9668
9669 #ifdef DEBUG
9670 fprintf (stderr, "\n");
9671 #endif
9672
9673 if (input_section->sec_info_type == SEC_INFO_TYPE_TARGET
9674 && input_section->size != input_section->rawsize
9675 && (strcmp (input_section->output_section->name, ".init") == 0
9676 || strcmp (input_section->output_section->name, ".fini") == 0))
9677 {
9678 /* Branch around the trampolines. */
9679 unsigned int insn = B + input_section->size - input_section->rawsize;
9680 bfd_put_32 (input_bfd, insn, contents + input_section->rawsize);
9681 }
9682
9683 if (htab->params->ppc476_workaround
9684 && input_section->sec_info_type == SEC_INFO_TYPE_TARGET
9685 && (!bfd_link_relocatable (info)
9686 || (input_section->output_section->alignment_power
9687 >= htab->params->pagesize_p2)))
9688 {
9689 bfd_vma start_addr, end_addr, addr;
9690 bfd_vma pagesize = (bfd_vma) 1 << htab->params->pagesize_p2;
9691
9692 if (relax_info->workaround_size != 0)
9693 {
9694 bfd_byte *p;
9695 unsigned int n;
9696 bfd_byte fill[4];
9697
9698 bfd_put_32 (input_bfd, BA, fill);
9699 p = contents + input_section->size - relax_info->workaround_size;
9700 n = relax_info->workaround_size >> 2;
9701 while (n--)
9702 {
9703 memcpy (p, fill, 4);
9704 p += 4;
9705 }
9706 }
9707
9708 /* The idea is: Replace the last instruction on a page with a
9709 branch to a patch area. Put the insn there followed by a
9710 branch back to the next page. Complicated a little by
9711 needing to handle moved conditional branches, and by not
9712 wanting to touch data-in-text. */
9713
9714 start_addr = (input_section->output_section->vma
9715 + input_section->output_offset);
9716 end_addr = (start_addr + input_section->size
9717 - relax_info->workaround_size);
9718 for (addr = ((start_addr & -pagesize) + pagesize - 4);
9719 addr < end_addr;
9720 addr += pagesize)
9721 {
9722 bfd_vma offset = addr - start_addr;
9723 Elf_Internal_Rela *lo, *hi;
9724 bfd_boolean is_data;
9725 bfd_vma patch_off, patch_addr;
9726 unsigned int insn;
9727
9728 /* Do we have a data reloc at this offset? If so, leave
9729 the word alone. */
9730 is_data = FALSE;
9731 lo = relocs;
9732 hi = relend;
9733 rel = NULL;
9734 while (lo < hi)
9735 {
9736 rel = lo + (hi - lo) / 2;
9737 if (rel->r_offset < offset)
9738 lo = rel + 1;
9739 else if (rel->r_offset > offset + 3)
9740 hi = rel;
9741 else
9742 {
9743 switch (ELF32_R_TYPE (rel->r_info))
9744 {
9745 case R_PPC_ADDR32:
9746 case R_PPC_UADDR32:
9747 case R_PPC_REL32:
9748 case R_PPC_ADDR30:
9749 is_data = TRUE;
9750 break;
9751 default:
9752 break;
9753 }
9754 break;
9755 }
9756 }
9757 if (is_data)
9758 continue;
9759
9760 /* Some instructions can be left alone too. Unconditional
9761 branches, except for bcctr with BO=0x14 (bctr, bctrl),
9762 avoid the icache failure.
9763
9764 The problem occurs due to prefetch across a page boundary
9765 where stale instructions can be fetched from the next
9766 page, and the mechanism for flushing these bad
9767 instructions fails under certain circumstances. The
9768 unconditional branches:
9769 1) Branch: b, bl, ba, bla,
9770 2) Branch Conditional: bc, bca, bcl, bcla,
9771 3) Branch Conditional to Link Register: bclr, bclrl,
9772 where (2) and (3) have BO=0x14 making them unconditional,
9773 prevent the bad prefetch because the prefetch itself is
9774 affected by these instructions. This happens even if the
9775 instruction is not executed.
9776
9777 A bctr example:
9778 .
9779 . lis 9,new_page@ha
9780 . addi 9,9,new_page@l
9781 . mtctr 9
9782 . bctr
9783 . nop
9784 . nop
9785 . new_page:
9786 .
9787 The bctr is not predicted taken due to ctr not being
9788 ready, so prefetch continues on past the bctr into the
9789 new page which might have stale instructions. If they
9790 fail to be flushed, then they will be executed after the
9791 bctr executes. Either of the following modifications
9792 prevent the bad prefetch from happening in the first
9793 place:
9794 .
9795 . lis 9,new_page@ha lis 9,new_page@ha
9796 . addi 9,9,new_page@l addi 9,9,new_page@l
9797 . mtctr 9 mtctr 9
9798 . bctr bctr
9799 . nop b somewhere_else
9800 . b somewhere_else nop
9801 . new_page: new_page:
9802 . */
9803 insn = bfd_get_32 (input_bfd, contents + offset);
9804 if ((insn & (0x3f << 26)) == (18u << 26) /* b,bl,ba,bla */
9805 || ((insn & (0x3f << 26)) == (16u << 26) /* bc,bcl,bca,bcla*/
9806 && (insn & (0x14 << 21)) == (0x14 << 21)) /* with BO=0x14 */
9807 || ((insn & (0x3f << 26)) == (19u << 26)
9808 && (insn & (0x3ff << 1)) == (16u << 1) /* bclr,bclrl */
9809 && (insn & (0x14 << 21)) == (0x14 << 21)))/* with BO=0x14 */
9810 continue;
9811
9812 patch_addr = (start_addr + input_section->size
9813 - relax_info->workaround_size);
9814 patch_addr = (patch_addr + 15) & -16;
9815 patch_off = patch_addr - start_addr;
9816 bfd_put_32 (input_bfd, B + patch_off - offset, contents + offset);
9817
9818 if (rel != NULL
9819 && rel->r_offset >= offset
9820 && rel->r_offset < offset + 4)
9821 {
9822 asection *sreloc;
9823
9824 /* If the insn we are patching had a reloc, adjust the
9825 reloc r_offset so that the reloc applies to the moved
9826 location. This matters for -r and --emit-relocs. */
9827 if (rel + 1 != relend)
9828 {
9829 Elf_Internal_Rela tmp = *rel;
9830
9831 /* Keep the relocs sorted by r_offset. */
9832 memmove (rel, rel + 1, (relend - (rel + 1)) * sizeof (*rel));
9833 relend[-1] = tmp;
9834 }
9835 relend[-1].r_offset += patch_off - offset;
9836
9837 /* Adjust REL16 addends too. */
9838 switch (ELF32_R_TYPE (relend[-1].r_info))
9839 {
9840 case R_PPC_REL16:
9841 case R_PPC_REL16_LO:
9842 case R_PPC_REL16_HI:
9843 case R_PPC_REL16_HA:
9844 relend[-1].r_addend += patch_off - offset;
9845 break;
9846 default:
9847 break;
9848 }
9849
9850 /* If we are building a PIE or shared library with
9851 non-PIC objects, perhaps we had a dynamic reloc too?
9852 If so, the dynamic reloc must move with the insn. */
9853 sreloc = elf_section_data (input_section)->sreloc;
9854 if (sreloc != NULL)
9855 {
9856 Elf32_External_Rela *slo, *shi, *srelend;
9857 bfd_vma soffset;
9858
9859 slo = (Elf32_External_Rela *) sreloc->contents;
9860 shi = srelend = slo + sreloc->reloc_count;
9861 soffset = (offset + input_section->output_section->vma
9862 + input_section->output_offset);
9863 while (slo < shi)
9864 {
9865 Elf32_External_Rela *srel = slo + (shi - slo) / 2;
9866 bfd_elf32_swap_reloca_in (output_bfd, (bfd_byte *) srel,
9867 &outrel);
9868 if (outrel.r_offset < soffset)
9869 slo = srel + 1;
9870 else if (outrel.r_offset > soffset + 3)
9871 shi = srel;
9872 else
9873 {
9874 if (srel + 1 != srelend)
9875 {
9876 memmove (srel, srel + 1,
9877 (srelend - (srel + 1)) * sizeof (*srel));
9878 srel = srelend - 1;
9879 }
9880 outrel.r_offset += patch_off - offset;
9881 bfd_elf32_swap_reloca_out (output_bfd, &outrel,
9882 (bfd_byte *) srel);
9883 break;
9884 }
9885 }
9886 }
9887 }
9888 else
9889 rel = NULL;
9890
9891 if ((insn & (0x3f << 26)) == (16u << 26) /* bc */
9892 && (insn & 2) == 0 /* relative */)
9893 {
9894 bfd_vma delta = ((insn & 0xfffc) ^ 0x8000) - 0x8000;
9895
9896 delta += offset - patch_off;
9897 if (bfd_link_relocatable (info) && rel != NULL)
9898 delta = 0;
9899 if (!bfd_link_relocatable (info) && rel != NULL)
9900 {
9901 enum elf_ppc_reloc_type r_type;
9902
9903 r_type = ELF32_R_TYPE (relend[-1].r_info);
9904 if (r_type == R_PPC_REL14_BRTAKEN)
9905 insn |= BRANCH_PREDICT_BIT;
9906 else if (r_type == R_PPC_REL14_BRNTAKEN)
9907 insn &= ~BRANCH_PREDICT_BIT;
9908 else
9909 BFD_ASSERT (r_type == R_PPC_REL14);
9910
9911 if ((r_type == R_PPC_REL14_BRTAKEN
9912 || r_type == R_PPC_REL14_BRNTAKEN)
9913 && delta + 0x8000 < 0x10000
9914 && (bfd_signed_vma) delta < 0)
9915 insn ^= BRANCH_PREDICT_BIT;
9916 }
9917 if (delta + 0x8000 < 0x10000)
9918 {
9919 bfd_put_32 (input_bfd,
9920 (insn & ~0xfffc) | (delta & 0xfffc),
9921 contents + patch_off);
9922 patch_off += 4;
9923 bfd_put_32 (input_bfd,
9924 B | ((offset + 4 - patch_off) & 0x3fffffc),
9925 contents + patch_off);
9926 patch_off += 4;
9927 }
9928 else
9929 {
9930 if (rel != NULL)
9931 {
9932 unsigned int r_sym = ELF32_R_SYM (relend[-1].r_info);
9933
9934 relend[-1].r_offset += 8;
9935 relend[-1].r_info = ELF32_R_INFO (r_sym, R_PPC_REL24);
9936 }
9937 bfd_put_32 (input_bfd,
9938 (insn & ~0xfffc) | 8,
9939 contents + patch_off);
9940 patch_off += 4;
9941 bfd_put_32 (input_bfd,
9942 B | ((offset + 4 - patch_off) & 0x3fffffc),
9943 contents + patch_off);
9944 patch_off += 4;
9945 bfd_put_32 (input_bfd,
9946 B | ((delta - 8) & 0x3fffffc),
9947 contents + patch_off);
9948 patch_off += 4;
9949 }
9950 }
9951 else
9952 {
9953 bfd_put_32 (input_bfd, insn, contents + patch_off);
9954 patch_off += 4;
9955 bfd_put_32 (input_bfd,
9956 B | ((offset + 4 - patch_off) & 0x3fffffc),
9957 contents + patch_off);
9958 patch_off += 4;
9959 }
9960 BFD_ASSERT (patch_off <= input_section->size);
9961 relax_info->workaround_size = input_section->size - patch_off;
9962 }
9963 }
9964
9965 return ret;
9966 }
9967 \f
9968 /* Finish up dynamic symbol handling. We set the contents of various
9969 dynamic sections here. */
9970
9971 static bfd_boolean
9972 ppc_elf_finish_dynamic_symbol (bfd *output_bfd,
9973 struct bfd_link_info *info,
9974 struct elf_link_hash_entry *h,
9975 Elf_Internal_Sym *sym)
9976 {
9977 struct ppc_elf_link_hash_table *htab;
9978 struct plt_entry *ent;
9979 bfd_boolean doneone;
9980
9981 #ifdef DEBUG
9982 fprintf (stderr, "ppc_elf_finish_dynamic_symbol called for %s",
9983 h->root.root.string);
9984 #endif
9985
9986 htab = ppc_elf_hash_table (info);
9987 BFD_ASSERT (htab->elf.dynobj != NULL);
9988
9989 doneone = FALSE;
9990 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
9991 if (ent->plt.offset != (bfd_vma) -1)
9992 {
9993 if (!doneone)
9994 {
9995 Elf_Internal_Rela rela;
9996 bfd_byte *loc;
9997 bfd_vma reloc_index;
9998
9999 if (htab->plt_type == PLT_NEW
10000 || !htab->elf.dynamic_sections_created
10001 || h->dynindx == -1)
10002 reloc_index = ent->plt.offset / 4;
10003 else
10004 {
10005 reloc_index = ((ent->plt.offset - htab->plt_initial_entry_size)
10006 / htab->plt_slot_size);
10007 if (reloc_index > PLT_NUM_SINGLE_ENTRIES
10008 && htab->plt_type == PLT_OLD)
10009 reloc_index -= (reloc_index - PLT_NUM_SINGLE_ENTRIES) / 2;
10010 }
10011
10012 /* This symbol has an entry in the procedure linkage table.
10013 Set it up. */
10014 if (htab->plt_type == PLT_VXWORKS
10015 && htab->elf.dynamic_sections_created
10016 && h->dynindx != -1)
10017 {
10018 bfd_vma got_offset;
10019 const bfd_vma *plt_entry;
10020
10021 /* The first three entries in .got.plt are reserved. */
10022 got_offset = (reloc_index + 3) * 4;
10023
10024 /* Use the right PLT. */
10025 plt_entry = bfd_link_pic (info) ? ppc_elf_vxworks_pic_plt_entry
10026 : ppc_elf_vxworks_plt_entry;
10027
10028 /* Fill in the .plt on VxWorks. */
10029 if (bfd_link_pic (info))
10030 {
10031 bfd_put_32 (output_bfd,
10032 plt_entry[0] | PPC_HA (got_offset),
10033 htab->elf.splt->contents + ent->plt.offset + 0);
10034 bfd_put_32 (output_bfd,
10035 plt_entry[1] | PPC_LO (got_offset),
10036 htab->elf.splt->contents + ent->plt.offset + 4);
10037 }
10038 else
10039 {
10040 bfd_vma got_loc = got_offset + SYM_VAL (htab->elf.hgot);
10041
10042 bfd_put_32 (output_bfd,
10043 plt_entry[0] | PPC_HA (got_loc),
10044 htab->elf.splt->contents + ent->plt.offset + 0);
10045 bfd_put_32 (output_bfd,
10046 plt_entry[1] | PPC_LO (got_loc),
10047 htab->elf.splt->contents + ent->plt.offset + 4);
10048 }
10049
10050 bfd_put_32 (output_bfd, plt_entry[2],
10051 htab->elf.splt->contents + ent->plt.offset + 8);
10052 bfd_put_32 (output_bfd, plt_entry[3],
10053 htab->elf.splt->contents + ent->plt.offset + 12);
10054
10055 /* This instruction is an immediate load. The value loaded is
10056 the byte offset of the R_PPC_JMP_SLOT relocation from the
10057 start of the .rela.plt section. The value is stored in the
10058 low-order 16 bits of the load instruction. */
10059 /* NOTE: It appears that this is now an index rather than a
10060 prescaled offset. */
10061 bfd_put_32 (output_bfd,
10062 plt_entry[4] | reloc_index,
10063 htab->elf.splt->contents + ent->plt.offset + 16);
10064 /* This instruction is a PC-relative branch whose target is
10065 the start of the PLT section. The address of this branch
10066 instruction is 20 bytes beyond the start of this PLT entry.
10067 The address is encoded in bits 6-29, inclusive. The value
10068 stored is right-shifted by two bits, permitting a 26-bit
10069 offset. */
10070 bfd_put_32 (output_bfd,
10071 (plt_entry[5]
10072 | (-(ent->plt.offset + 20) & 0x03fffffc)),
10073 htab->elf.splt->contents + ent->plt.offset + 20);
10074 bfd_put_32 (output_bfd, plt_entry[6],
10075 htab->elf.splt->contents + ent->plt.offset + 24);
10076 bfd_put_32 (output_bfd, plt_entry[7],
10077 htab->elf.splt->contents + ent->plt.offset + 28);
10078
10079 /* Fill in the GOT entry corresponding to this PLT slot with
10080 the address immediately after the "bctr" instruction
10081 in this PLT entry. */
10082 bfd_put_32 (output_bfd, (htab->elf.splt->output_section->vma
10083 + htab->elf.splt->output_offset
10084 + ent->plt.offset + 16),
10085 htab->elf.sgotplt->contents + got_offset);
10086
10087 if (!bfd_link_pic (info))
10088 {
10089 /* Fill in a couple of entries in .rela.plt.unloaded. */
10090 loc = htab->srelplt2->contents
10091 + ((VXWORKS_PLTRESOLVE_RELOCS + reloc_index
10092 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS)
10093 * sizeof (Elf32_External_Rela));
10094
10095 /* Provide the @ha relocation for the first instruction. */
10096 rela.r_offset = (htab->elf.splt->output_section->vma
10097 + htab->elf.splt->output_offset
10098 + ent->plt.offset + 2);
10099 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
10100 R_PPC_ADDR16_HA);
10101 rela.r_addend = got_offset;
10102 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10103 loc += sizeof (Elf32_External_Rela);
10104
10105 /* Provide the @l relocation for the second instruction. */
10106 rela.r_offset = (htab->elf.splt->output_section->vma
10107 + htab->elf.splt->output_offset
10108 + ent->plt.offset + 6);
10109 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
10110 R_PPC_ADDR16_LO);
10111 rela.r_addend = got_offset;
10112 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10113 loc += sizeof (Elf32_External_Rela);
10114
10115 /* Provide a relocation for the GOT entry corresponding to this
10116 PLT slot. Point it at the middle of the .plt entry. */
10117 rela.r_offset = (htab->elf.sgotplt->output_section->vma
10118 + htab->elf.sgotplt->output_offset
10119 + got_offset);
10120 rela.r_info = ELF32_R_INFO (htab->elf.hplt->indx,
10121 R_PPC_ADDR32);
10122 rela.r_addend = ent->plt.offset + 16;
10123 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10124 }
10125
10126 /* VxWorks uses non-standard semantics for R_PPC_JMP_SLOT.
10127 In particular, the offset for the relocation is not the
10128 address of the PLT entry for this function, as specified
10129 by the ABI. Instead, the offset is set to the address of
10130 the GOT slot for this function. See EABI 4.4.4.1. */
10131 rela.r_offset = (htab->elf.sgotplt->output_section->vma
10132 + htab->elf.sgotplt->output_offset
10133 + got_offset);
10134
10135 }
10136 else
10137 {
10138 asection *splt = htab->elf.splt;
10139 if (!htab->elf.dynamic_sections_created
10140 || h->dynindx == -1)
10141 splt = htab->elf.iplt;
10142
10143 rela.r_offset = (splt->output_section->vma
10144 + splt->output_offset
10145 + ent->plt.offset);
10146 if (htab->plt_type == PLT_OLD
10147 || !htab->elf.dynamic_sections_created
10148 || h->dynindx == -1)
10149 {
10150 /* We don't need to fill in the .plt. The ppc dynamic
10151 linker will fill it in. */
10152 }
10153 else
10154 {
10155 bfd_vma val = (htab->glink_pltresolve + ent->plt.offset
10156 + htab->glink->output_section->vma
10157 + htab->glink->output_offset);
10158 bfd_put_32 (output_bfd, val,
10159 splt->contents + ent->plt.offset);
10160 }
10161 }
10162
10163 /* Fill in the entry in the .rela.plt section. */
10164 rela.r_addend = 0;
10165 if (!htab->elf.dynamic_sections_created
10166 || h->dynindx == -1)
10167 {
10168 BFD_ASSERT (h->type == STT_GNU_IFUNC
10169 && h->def_regular
10170 && (h->root.type == bfd_link_hash_defined
10171 || h->root.type == bfd_link_hash_defweak));
10172 rela.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
10173 rela.r_addend = SYM_VAL (h);
10174 }
10175 else
10176 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_JMP_SLOT);
10177
10178 if (!htab->elf.dynamic_sections_created
10179 || h->dynindx == -1)
10180 {
10181 loc = (htab->elf.irelplt->contents
10182 + (htab->elf.irelplt->reloc_count++
10183 * sizeof (Elf32_External_Rela)));
10184 htab->local_ifunc_resolver = 1;
10185 }
10186 else
10187 {
10188 loc = (htab->elf.srelplt->contents
10189 + reloc_index * sizeof (Elf32_External_Rela));
10190 if (h->type == STT_GNU_IFUNC && is_static_defined (h))
10191 htab->maybe_local_ifunc_resolver = 1;
10192 }
10193 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10194
10195 if (!h->def_regular)
10196 {
10197 /* Mark the symbol as undefined, rather than as
10198 defined in the .plt section. Leave the value if
10199 there were any relocations where pointer equality
10200 matters (this is a clue for the dynamic linker, to
10201 make function pointer comparisons work between an
10202 application and shared library), otherwise set it
10203 to zero. */
10204 sym->st_shndx = SHN_UNDEF;
10205 if (!h->pointer_equality_needed)
10206 sym->st_value = 0;
10207 else if (!h->ref_regular_nonweak)
10208 {
10209 /* This breaks function pointer comparisons, but
10210 that is better than breaking tests for a NULL
10211 function pointer. */
10212 sym->st_value = 0;
10213 }
10214 }
10215 else if (h->type == STT_GNU_IFUNC
10216 && !bfd_link_pic (info))
10217 {
10218 /* Set the value of ifunc symbols in a non-pie
10219 executable to the glink entry. This is to avoid
10220 text relocations. We can't do this for ifunc in
10221 allocate_dynrelocs, as we do for normal dynamic
10222 function symbols with plt entries, because we need
10223 to keep the original value around for the ifunc
10224 relocation. */
10225 sym->st_shndx = (_bfd_elf_section_from_bfd_section
10226 (output_bfd, htab->glink->output_section));
10227 sym->st_value = (ent->glink_offset
10228 + htab->glink->output_offset
10229 + htab->glink->output_section->vma);
10230 }
10231 doneone = TRUE;
10232 }
10233
10234 if (htab->plt_type == PLT_NEW
10235 || !htab->elf.dynamic_sections_created
10236 || h->dynindx == -1)
10237 {
10238 unsigned char *p;
10239 asection *splt = htab->elf.splt;
10240
10241 if (!htab->elf.dynamic_sections_created
10242 || h->dynindx == -1)
10243 splt = htab->elf.iplt;
10244
10245 p = (unsigned char *) htab->glink->contents + ent->glink_offset;
10246 write_glink_stub (h, ent, splt, p, info);
10247
10248 if (!bfd_link_pic (info))
10249 /* We only need one non-PIC glink stub. */
10250 break;
10251 }
10252 else
10253 break;
10254 }
10255
10256 if (h->needs_copy)
10257 {
10258 asection *s;
10259 Elf_Internal_Rela rela;
10260 bfd_byte *loc;
10261
10262 /* This symbols needs a copy reloc. Set it up. */
10263
10264 #ifdef DEBUG
10265 fprintf (stderr, ", copy");
10266 #endif
10267
10268 BFD_ASSERT (h->dynindx != -1);
10269
10270 if (ppc_elf_hash_entry (h)->has_sda_refs)
10271 s = htab->relsbss;
10272 else if (h->root.u.def.section == htab->elf.sdynrelro)
10273 s = htab->elf.sreldynrelro;
10274 else
10275 s = htab->elf.srelbss;
10276 BFD_ASSERT (s != NULL);
10277
10278 rela.r_offset = SYM_VAL (h);
10279 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_COPY);
10280 rela.r_addend = 0;
10281 loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
10282 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10283 }
10284
10285 #ifdef DEBUG
10286 fprintf (stderr, "\n");
10287 #endif
10288
10289 return TRUE;
10290 }
10291 \f
10292 static enum elf_reloc_type_class
10293 ppc_elf_reloc_type_class (const struct bfd_link_info *info,
10294 const asection *rel_sec,
10295 const Elf_Internal_Rela *rela)
10296 {
10297 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
10298
10299 if (rel_sec == htab->elf.irelplt)
10300 return reloc_class_ifunc;
10301
10302 switch (ELF32_R_TYPE (rela->r_info))
10303 {
10304 case R_PPC_RELATIVE:
10305 return reloc_class_relative;
10306 case R_PPC_JMP_SLOT:
10307 return reloc_class_plt;
10308 case R_PPC_COPY:
10309 return reloc_class_copy;
10310 default:
10311 return reloc_class_normal;
10312 }
10313 }
10314 \f
10315 /* Finish up the dynamic sections. */
10316
10317 static bfd_boolean
10318 ppc_elf_finish_dynamic_sections (bfd *output_bfd,
10319 struct bfd_link_info *info)
10320 {
10321 asection *sdyn;
10322 struct ppc_elf_link_hash_table *htab;
10323 bfd_vma got;
10324 bfd *dynobj;
10325 bfd_boolean ret = TRUE;
10326
10327 #ifdef DEBUG
10328 fprintf (stderr, "ppc_elf_finish_dynamic_sections called\n");
10329 #endif
10330
10331 htab = ppc_elf_hash_table (info);
10332 dynobj = htab->elf.dynobj;
10333 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
10334
10335 got = 0;
10336 if (htab->elf.hgot != NULL)
10337 got = SYM_VAL (htab->elf.hgot);
10338
10339 if (htab->elf.dynamic_sections_created)
10340 {
10341 Elf32_External_Dyn *dyncon, *dynconend;
10342
10343 BFD_ASSERT (htab->elf.splt != NULL && sdyn != NULL);
10344
10345 dyncon = (Elf32_External_Dyn *) sdyn->contents;
10346 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
10347 for (; dyncon < dynconend; dyncon++)
10348 {
10349 Elf_Internal_Dyn dyn;
10350 asection *s;
10351
10352 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
10353
10354 switch (dyn.d_tag)
10355 {
10356 case DT_PLTGOT:
10357 if (htab->is_vxworks)
10358 s = htab->elf.sgotplt;
10359 else
10360 s = htab->elf.splt;
10361 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
10362 break;
10363
10364 case DT_PLTRELSZ:
10365 dyn.d_un.d_val = htab->elf.srelplt->size;
10366 break;
10367
10368 case DT_JMPREL:
10369 s = htab->elf.srelplt;
10370 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
10371 break;
10372
10373 case DT_PPC_GOT:
10374 dyn.d_un.d_ptr = got;
10375 break;
10376
10377 case DT_TEXTREL:
10378 if (htab->local_ifunc_resolver)
10379 info->callbacks->einfo
10380 (_("%X%P: text relocations and GNU indirect "
10381 "functions will result in a segfault at runtime\n"));
10382 else if (htab->maybe_local_ifunc_resolver)
10383 info->callbacks->einfo
10384 (_("%P: warning: text relocations and GNU indirect "
10385 "functions may result in a segfault at runtime\n"));
10386 continue;
10387
10388 default:
10389 if (htab->is_vxworks
10390 && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn))
10391 break;
10392 continue;
10393 }
10394
10395 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
10396 }
10397 }
10398
10399 if (htab->elf.sgot != NULL
10400 && htab->elf.sgot->output_section != bfd_abs_section_ptr)
10401 {
10402 if (htab->elf.hgot->root.u.def.section == htab->elf.sgot
10403 || htab->elf.hgot->root.u.def.section == htab->elf.sgotplt)
10404 {
10405 unsigned char *p = htab->elf.hgot->root.u.def.section->contents;
10406
10407 p += htab->elf.hgot->root.u.def.value;
10408 if (htab->plt_type == PLT_OLD)
10409 {
10410 /* Add a blrl instruction at _GLOBAL_OFFSET_TABLE_-4
10411 so that a function can easily find the address of
10412 _GLOBAL_OFFSET_TABLE_. */
10413 BFD_ASSERT (htab->elf.hgot->root.u.def.value - 4
10414 < htab->elf.hgot->root.u.def.section->size);
10415 bfd_put_32 (output_bfd, 0x4e800021, p - 4);
10416 }
10417
10418 if (sdyn != NULL)
10419 {
10420 bfd_vma val = sdyn->output_section->vma + sdyn->output_offset;
10421 BFD_ASSERT (htab->elf.hgot->root.u.def.value
10422 < htab->elf.hgot->root.u.def.section->size);
10423 bfd_put_32 (output_bfd, val, p);
10424 }
10425 }
10426 else
10427 {
10428 /* xgettext:c-format */
10429 info->callbacks->einfo (_("%P: %s not defined in linker created %s\n"),
10430 htab->elf.hgot->root.root.string,
10431 (htab->elf.sgotplt != NULL
10432 ? htab->elf.sgotplt->name
10433 : htab->elf.sgot->name));
10434 bfd_set_error (bfd_error_bad_value);
10435 ret = FALSE;
10436 }
10437
10438 elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize = 4;
10439 }
10440
10441 /* Fill in the first entry in the VxWorks procedure linkage table. */
10442 if (htab->is_vxworks
10443 && htab->elf.splt != NULL
10444 && htab->elf.splt->size != 0
10445 && htab->elf.splt->output_section != bfd_abs_section_ptr)
10446 {
10447 asection *splt = htab->elf.splt;
10448 /* Use the right PLT. */
10449 const bfd_vma *plt_entry = (bfd_link_pic (info)
10450 ? ppc_elf_vxworks_pic_plt0_entry
10451 : ppc_elf_vxworks_plt0_entry);
10452
10453 if (!bfd_link_pic (info))
10454 {
10455 bfd_vma got_value = SYM_VAL (htab->elf.hgot);
10456
10457 bfd_put_32 (output_bfd, plt_entry[0] | PPC_HA (got_value),
10458 splt->contents + 0);
10459 bfd_put_32 (output_bfd, plt_entry[1] | PPC_LO (got_value),
10460 splt->contents + 4);
10461 }
10462 else
10463 {
10464 bfd_put_32 (output_bfd, plt_entry[0], splt->contents + 0);
10465 bfd_put_32 (output_bfd, plt_entry[1], splt->contents + 4);
10466 }
10467 bfd_put_32 (output_bfd, plt_entry[2], splt->contents + 8);
10468 bfd_put_32 (output_bfd, plt_entry[3], splt->contents + 12);
10469 bfd_put_32 (output_bfd, plt_entry[4], splt->contents + 16);
10470 bfd_put_32 (output_bfd, plt_entry[5], splt->contents + 20);
10471 bfd_put_32 (output_bfd, plt_entry[6], splt->contents + 24);
10472 bfd_put_32 (output_bfd, plt_entry[7], splt->contents + 28);
10473
10474 if (! bfd_link_pic (info))
10475 {
10476 Elf_Internal_Rela rela;
10477 bfd_byte *loc;
10478
10479 loc = htab->srelplt2->contents;
10480
10481 /* Output the @ha relocation for the first instruction. */
10482 rela.r_offset = (htab->elf.splt->output_section->vma
10483 + htab->elf.splt->output_offset
10484 + 2);
10485 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
10486 rela.r_addend = 0;
10487 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10488 loc += sizeof (Elf32_External_Rela);
10489
10490 /* Output the @l relocation for the second instruction. */
10491 rela.r_offset = (htab->elf.splt->output_section->vma
10492 + htab->elf.splt->output_offset
10493 + 6);
10494 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
10495 rela.r_addend = 0;
10496 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10497 loc += sizeof (Elf32_External_Rela);
10498
10499 /* Fix up the remaining relocations. They may have the wrong
10500 symbol index for _G_O_T_ or _P_L_T_ depending on the order
10501 in which symbols were output. */
10502 while (loc < htab->srelplt2->contents + htab->srelplt2->size)
10503 {
10504 Elf_Internal_Rela rel;
10505
10506 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
10507 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
10508 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
10509 loc += sizeof (Elf32_External_Rela);
10510
10511 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
10512 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
10513 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
10514 loc += sizeof (Elf32_External_Rela);
10515
10516 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
10517 rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_PPC_ADDR32);
10518 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
10519 loc += sizeof (Elf32_External_Rela);
10520 }
10521 }
10522 }
10523
10524 if (htab->glink != NULL
10525 && htab->glink->contents != NULL
10526 && htab->elf.dynamic_sections_created)
10527 {
10528 unsigned char *p;
10529 unsigned char *endp;
10530 bfd_vma res0;
10531
10532 /*
10533 * PIC glink code is the following:
10534 *
10535 * # ith PLT code stub.
10536 * addis 11,30,(plt+(i-1)*4-got)@ha
10537 * lwz 11,(plt+(i-1)*4-got)@l(11)
10538 * mtctr 11
10539 * bctr
10540 *
10541 * # A table of branches, one for each plt entry.
10542 * # The idea is that the plt call stub loads ctr and r11 with these
10543 * # addresses, so (r11 - res_0) gives the plt index * 4.
10544 * res_0: b PLTresolve
10545 * res_1: b PLTresolve
10546 * .
10547 * # Some number of entries towards the end can be nops
10548 * res_n_m3: nop
10549 * res_n_m2: nop
10550 * res_n_m1:
10551 *
10552 * PLTresolve:
10553 * addis 11,11,(1f-res_0)@ha
10554 * mflr 0
10555 * bcl 20,31,1f
10556 * 1: addi 11,11,(1b-res_0)@l
10557 * mflr 12
10558 * mtlr 0
10559 * sub 11,11,12 # r11 = index * 4
10560 * addis 12,12,(got+4-1b)@ha
10561 * lwz 0,(got+4-1b)@l(12) # got[1] address of dl_runtime_resolve
10562 * lwz 12,(got+8-1b)@l(12) # got[2] contains the map address
10563 * mtctr 0
10564 * add 0,11,11
10565 * add 11,0,11 # r11 = index * 12 = reloc offset.
10566 * bctr
10567 *
10568 * Non-PIC glink code is a little simpler.
10569 *
10570 * # ith PLT code stub.
10571 * lis 11,(plt+(i-1)*4)@ha
10572 * lwz 11,(plt+(i-1)*4)@l(11)
10573 * mtctr 11
10574 * bctr
10575 *
10576 * The branch table is the same, then comes
10577 *
10578 * PLTresolve:
10579 * lis 12,(got+4)@ha
10580 * addis 11,11,(-res_0)@ha
10581 * lwz 0,(got+4)@l(12) # got[1] address of dl_runtime_resolve
10582 * addi 11,11,(-res_0)@l # r11 = index * 4
10583 * mtctr 0
10584 * add 0,11,11
10585 * lwz 12,(got+8)@l(12) # got[2] contains the map address
10586 * add 11,0,11 # r11 = index * 12 = reloc offset.
10587 * bctr
10588 */
10589
10590 /* Build the branch table, one for each plt entry (less one),
10591 and perhaps some padding. */
10592 p = htab->glink->contents;
10593 p += htab->glink_pltresolve;
10594 endp = htab->glink->contents;
10595 endp += htab->glink->size - GLINK_PLTRESOLVE;
10596 while (p < endp - (htab->params->ppc476_workaround ? 0 : 8 * 4))
10597 {
10598 bfd_put_32 (output_bfd, B + endp - p, p);
10599 p += 4;
10600 }
10601 while (p < endp)
10602 {
10603 bfd_put_32 (output_bfd, NOP, p);
10604 p += 4;
10605 }
10606
10607 res0 = (htab->glink_pltresolve
10608 + htab->glink->output_section->vma
10609 + htab->glink->output_offset);
10610
10611 if (htab->params->ppc476_workaround)
10612 {
10613 /* Ensure that a call stub at the end of a page doesn't
10614 result in prefetch over the end of the page into the
10615 glink branch table. */
10616 bfd_vma pagesize = (bfd_vma) 1 << htab->params->pagesize_p2;
10617 bfd_vma page_addr;
10618 bfd_vma glink_start = (htab->glink->output_section->vma
10619 + htab->glink->output_offset);
10620
10621 for (page_addr = res0 & -pagesize;
10622 page_addr > glink_start;
10623 page_addr -= pagesize)
10624 {
10625 /* We have a plt call stub that may need fixing. */
10626 bfd_byte *loc;
10627 unsigned int insn;
10628
10629 loc = htab->glink->contents + page_addr - 4 - glink_start;
10630 insn = bfd_get_32 (output_bfd, loc);
10631 if (insn == BCTR)
10632 {
10633 /* By alignment, we know that there must be at least
10634 one other call stub before this one. */
10635 insn = bfd_get_32 (output_bfd, loc - 16);
10636 if (insn == BCTR)
10637 bfd_put_32 (output_bfd, B | (-16 & 0x3fffffc), loc);
10638 else
10639 bfd_put_32 (output_bfd, B | (-20 & 0x3fffffc), loc);
10640 }
10641 }
10642 }
10643
10644 /* Last comes the PLTresolve stub. */
10645 endp = p + GLINK_PLTRESOLVE;
10646 if (bfd_link_pic (info))
10647 {
10648 bfd_vma bcl;
10649
10650 bcl = (htab->glink->size - GLINK_PLTRESOLVE + 3*4
10651 + htab->glink->output_section->vma
10652 + htab->glink->output_offset);
10653
10654 bfd_put_32 (output_bfd, ADDIS_11_11 + PPC_HA (bcl - res0), p);
10655 p += 4;
10656 bfd_put_32 (output_bfd, MFLR_0, p);
10657 p += 4;
10658 bfd_put_32 (output_bfd, BCL_20_31, p);
10659 p += 4;
10660 bfd_put_32 (output_bfd, ADDI_11_11 + PPC_LO (bcl - res0), p);
10661 p += 4;
10662 bfd_put_32 (output_bfd, MFLR_12, p);
10663 p += 4;
10664 bfd_put_32 (output_bfd, MTLR_0, p);
10665 p += 4;
10666 bfd_put_32 (output_bfd, SUB_11_11_12, p);
10667 p += 4;
10668 bfd_put_32 (output_bfd, ADDIS_12_12 + PPC_HA (got + 4 - bcl), p);
10669 p += 4;
10670 if (PPC_HA (got + 4 - bcl) == PPC_HA (got + 8 - bcl))
10671 {
10672 bfd_put_32 (output_bfd, LWZ_0_12 + PPC_LO (got + 4 - bcl), p);
10673 p += 4;
10674 bfd_put_32 (output_bfd, LWZ_12_12 + PPC_LO (got + 8 - bcl), p);
10675 p += 4;
10676 }
10677 else
10678 {
10679 bfd_put_32 (output_bfd, LWZU_0_12 + PPC_LO (got + 4 - bcl), p);
10680 p += 4;
10681 bfd_put_32 (output_bfd, LWZ_12_12 + 4, p);
10682 p += 4;
10683 }
10684 bfd_put_32 (output_bfd, MTCTR_0, p);
10685 p += 4;
10686 bfd_put_32 (output_bfd, ADD_0_11_11, p);
10687 }
10688 else
10689 {
10690 bfd_put_32 (output_bfd, LIS_12 + PPC_HA (got + 4), p);
10691 p += 4;
10692 bfd_put_32 (output_bfd, ADDIS_11_11 + PPC_HA (-res0), p);
10693 p += 4;
10694 if (PPC_HA (got + 4) == PPC_HA (got + 8))
10695 bfd_put_32 (output_bfd, LWZ_0_12 + PPC_LO (got + 4), p);
10696 else
10697 bfd_put_32 (output_bfd, LWZU_0_12 + PPC_LO (got + 4), p);
10698 p += 4;
10699 bfd_put_32 (output_bfd, ADDI_11_11 + PPC_LO (-res0), p);
10700 p += 4;
10701 bfd_put_32 (output_bfd, MTCTR_0, p);
10702 p += 4;
10703 bfd_put_32 (output_bfd, ADD_0_11_11, p);
10704 p += 4;
10705 if (PPC_HA (got + 4) == PPC_HA (got + 8))
10706 bfd_put_32 (output_bfd, LWZ_12_12 + PPC_LO (got + 8), p);
10707 else
10708 bfd_put_32 (output_bfd, LWZ_12_12 + 4, p);
10709 }
10710 p += 4;
10711 bfd_put_32 (output_bfd, ADD_11_0_11, p);
10712 p += 4;
10713 p = output_bctr (htab, output_bfd, p);
10714 while (p < endp)
10715 {
10716 bfd_put_32 (output_bfd,
10717 htab->params->ppc476_workaround ? BA : NOP, p);
10718 p += 4;
10719 }
10720 BFD_ASSERT (p == endp);
10721 }
10722
10723 if (htab->glink_eh_frame != NULL
10724 && htab->glink_eh_frame->contents != NULL)
10725 {
10726 unsigned char *p = htab->glink_eh_frame->contents;
10727 bfd_vma val;
10728
10729 p += sizeof (glink_eh_frame_cie);
10730 /* FDE length. */
10731 p += 4;
10732 /* CIE pointer. */
10733 p += 4;
10734 /* Offset to .glink. */
10735 val = (htab->glink->output_section->vma
10736 + htab->glink->output_offset);
10737 val -= (htab->glink_eh_frame->output_section->vma
10738 + htab->glink_eh_frame->output_offset);
10739 val -= p - htab->glink_eh_frame->contents;
10740 bfd_put_32 (htab->elf.dynobj, val, p);
10741
10742 if (htab->glink_eh_frame->sec_info_type == SEC_INFO_TYPE_EH_FRAME
10743 && !_bfd_elf_write_section_eh_frame (output_bfd, info,
10744 htab->glink_eh_frame,
10745 htab->glink_eh_frame->contents))
10746 return FALSE;
10747 }
10748
10749 return ret;
10750 }
10751 \f
10752 #define TARGET_LITTLE_SYM powerpc_elf32_le_vec
10753 #define TARGET_LITTLE_NAME "elf32-powerpcle"
10754 #define TARGET_BIG_SYM powerpc_elf32_vec
10755 #define TARGET_BIG_NAME "elf32-powerpc"
10756 #define ELF_ARCH bfd_arch_powerpc
10757 #define ELF_TARGET_ID PPC32_ELF_DATA
10758 #define ELF_MACHINE_CODE EM_PPC
10759 #ifdef __QNXTARGET__
10760 #define ELF_MAXPAGESIZE 0x1000
10761 #define ELF_COMMONPAGESIZE 0x1000
10762 #else
10763 #define ELF_MAXPAGESIZE 0x10000
10764 #define ELF_COMMONPAGESIZE 0x10000
10765 #endif
10766 #define ELF_MINPAGESIZE 0x1000
10767 #define elf_info_to_howto ppc_elf_info_to_howto
10768
10769 #ifdef EM_CYGNUS_POWERPC
10770 #define ELF_MACHINE_ALT1 EM_CYGNUS_POWERPC
10771 #endif
10772
10773 #ifdef EM_PPC_OLD
10774 #define ELF_MACHINE_ALT2 EM_PPC_OLD
10775 #endif
10776
10777 #define elf_backend_plt_not_loaded 1
10778 #define elf_backend_want_dynrelro 1
10779 #define elf_backend_can_gc_sections 1
10780 #define elf_backend_can_refcount 1
10781 #define elf_backend_rela_normal 1
10782 #define elf_backend_caches_rawsize 1
10783
10784 #define bfd_elf32_mkobject ppc_elf_mkobject
10785 #define bfd_elf32_bfd_merge_private_bfd_data ppc_elf_merge_private_bfd_data
10786 #define bfd_elf32_bfd_relax_section ppc_elf_relax_section
10787 #define bfd_elf32_bfd_reloc_type_lookup ppc_elf_reloc_type_lookup
10788 #define bfd_elf32_bfd_reloc_name_lookup ppc_elf_reloc_name_lookup
10789 #define bfd_elf32_bfd_set_private_flags ppc_elf_set_private_flags
10790 #define bfd_elf32_bfd_link_hash_table_create ppc_elf_link_hash_table_create
10791 #define bfd_elf32_get_synthetic_symtab ppc_elf_get_synthetic_symtab
10792
10793 #define elf_backend_object_p ppc_elf_object_p
10794 #define elf_backend_gc_mark_hook ppc_elf_gc_mark_hook
10795 #define elf_backend_section_from_shdr ppc_elf_section_from_shdr
10796 #define elf_backend_relocate_section ppc_elf_relocate_section
10797 #define elf_backend_create_dynamic_sections ppc_elf_create_dynamic_sections
10798 #define elf_backend_check_relocs ppc_elf_check_relocs
10799 #define elf_backend_relocs_compatible _bfd_elf_relocs_compatible
10800 #define elf_backend_copy_indirect_symbol ppc_elf_copy_indirect_symbol
10801 #define elf_backend_adjust_dynamic_symbol ppc_elf_adjust_dynamic_symbol
10802 #define elf_backend_add_symbol_hook ppc_elf_add_symbol_hook
10803 #define elf_backend_size_dynamic_sections ppc_elf_size_dynamic_sections
10804 #define elf_backend_hash_symbol ppc_elf_hash_symbol
10805 #define elf_backend_finish_dynamic_symbol ppc_elf_finish_dynamic_symbol
10806 #define elf_backend_finish_dynamic_sections ppc_elf_finish_dynamic_sections
10807 #define elf_backend_fake_sections ppc_elf_fake_sections
10808 #define elf_backend_additional_program_headers ppc_elf_additional_program_headers
10809 #define elf_backend_modify_segment_map ppc_elf_modify_segment_map
10810 #define elf_backend_grok_prstatus ppc_elf_grok_prstatus
10811 #define elf_backend_grok_psinfo ppc_elf_grok_psinfo
10812 #define elf_backend_write_core_note ppc_elf_write_core_note
10813 #define elf_backend_reloc_type_class ppc_elf_reloc_type_class
10814 #define elf_backend_begin_write_processing ppc_elf_begin_write_processing
10815 #define elf_backend_final_write_processing ppc_elf_final_write_processing
10816 #define elf_backend_write_section ppc_elf_write_section
10817 #define elf_backend_get_sec_type_attr ppc_elf_get_sec_type_attr
10818 #define elf_backend_plt_sym_val ppc_elf_plt_sym_val
10819 #define elf_backend_action_discarded ppc_elf_action_discarded
10820 #define elf_backend_init_index_section _bfd_elf_init_1_index_section
10821 #define elf_backend_lookup_section_flags_hook ppc_elf_lookup_section_flags
10822
10823 #include "elf32-target.h"
10824
10825 /* FreeBSD Target */
10826
10827 #undef TARGET_LITTLE_SYM
10828 #undef TARGET_LITTLE_NAME
10829
10830 #undef TARGET_BIG_SYM
10831 #define TARGET_BIG_SYM powerpc_elf32_fbsd_vec
10832 #undef TARGET_BIG_NAME
10833 #define TARGET_BIG_NAME "elf32-powerpc-freebsd"
10834
10835 #undef ELF_OSABI
10836 #define ELF_OSABI ELFOSABI_FREEBSD
10837
10838 #undef elf32_bed
10839 #define elf32_bed elf32_powerpc_fbsd_bed
10840
10841 #include "elf32-target.h"
10842
10843 /* VxWorks Target */
10844
10845 #undef TARGET_LITTLE_SYM
10846 #undef TARGET_LITTLE_NAME
10847
10848 #undef TARGET_BIG_SYM
10849 #define TARGET_BIG_SYM powerpc_elf32_vxworks_vec
10850 #undef TARGET_BIG_NAME
10851 #define TARGET_BIG_NAME "elf32-powerpc-vxworks"
10852
10853 #undef ELF_OSABI
10854
10855 /* VxWorks uses the elf default section flags for .plt. */
10856 static const struct bfd_elf_special_section *
10857 ppc_elf_vxworks_get_sec_type_attr (bfd *abfd, asection *sec)
10858 {
10859 if (sec->name == NULL)
10860 return NULL;
10861
10862 if (strcmp (sec->name, ".plt") == 0)
10863 return _bfd_elf_get_sec_type_attr (abfd, sec);
10864
10865 return ppc_elf_get_sec_type_attr (abfd, sec);
10866 }
10867
10868 /* Like ppc_elf_link_hash_table_create, but overrides
10869 appropriately for VxWorks. */
10870 static struct bfd_link_hash_table *
10871 ppc_elf_vxworks_link_hash_table_create (bfd *abfd)
10872 {
10873 struct bfd_link_hash_table *ret;
10874
10875 ret = ppc_elf_link_hash_table_create (abfd);
10876 if (ret)
10877 {
10878 struct ppc_elf_link_hash_table *htab
10879 = (struct ppc_elf_link_hash_table *)ret;
10880 htab->is_vxworks = 1;
10881 htab->plt_type = PLT_VXWORKS;
10882 htab->plt_entry_size = VXWORKS_PLT_ENTRY_SIZE;
10883 htab->plt_slot_size = VXWORKS_PLT_ENTRY_SIZE;
10884 htab->plt_initial_entry_size = VXWORKS_PLT_INITIAL_ENTRY_SIZE;
10885 }
10886 return ret;
10887 }
10888
10889 /* Tweak magic VxWorks symbols as they are loaded. */
10890 static bfd_boolean
10891 ppc_elf_vxworks_add_symbol_hook (bfd *abfd,
10892 struct bfd_link_info *info,
10893 Elf_Internal_Sym *sym,
10894 const char **namep,
10895 flagword *flagsp,
10896 asection **secp,
10897 bfd_vma *valp)
10898 {
10899 if (!elf_vxworks_add_symbol_hook (abfd, info, sym, namep, flagsp, secp,
10900 valp))
10901 return FALSE;
10902
10903 return ppc_elf_add_symbol_hook (abfd, info, sym, namep, flagsp, secp, valp);
10904 }
10905
10906 static void
10907 ppc_elf_vxworks_final_write_processing (bfd *abfd, bfd_boolean linker)
10908 {
10909 ppc_elf_final_write_processing (abfd, linker);
10910 elf_vxworks_final_write_processing (abfd, linker);
10911 }
10912
10913 /* On VxWorks, we emit relocations against _PROCEDURE_LINKAGE_TABLE_, so
10914 define it. */
10915 #undef elf_backend_want_plt_sym
10916 #define elf_backend_want_plt_sym 1
10917 #undef elf_backend_want_got_plt
10918 #define elf_backend_want_got_plt 1
10919 #undef elf_backend_got_symbol_offset
10920 #define elf_backend_got_symbol_offset 0
10921 #undef elf_backend_plt_not_loaded
10922 #define elf_backend_plt_not_loaded 0
10923 #undef elf_backend_plt_readonly
10924 #define elf_backend_plt_readonly 1
10925 #undef elf_backend_got_header_size
10926 #define elf_backend_got_header_size 12
10927 #undef elf_backend_dtrel_excludes_plt
10928 #define elf_backend_dtrel_excludes_plt 1
10929
10930 #undef bfd_elf32_get_synthetic_symtab
10931
10932 #undef bfd_elf32_bfd_link_hash_table_create
10933 #define bfd_elf32_bfd_link_hash_table_create \
10934 ppc_elf_vxworks_link_hash_table_create
10935 #undef elf_backend_add_symbol_hook
10936 #define elf_backend_add_symbol_hook \
10937 ppc_elf_vxworks_add_symbol_hook
10938 #undef elf_backend_link_output_symbol_hook
10939 #define elf_backend_link_output_symbol_hook \
10940 elf_vxworks_link_output_symbol_hook
10941 #undef elf_backend_final_write_processing
10942 #define elf_backend_final_write_processing \
10943 ppc_elf_vxworks_final_write_processing
10944 #undef elf_backend_get_sec_type_attr
10945 #define elf_backend_get_sec_type_attr \
10946 ppc_elf_vxworks_get_sec_type_attr
10947 #undef elf_backend_emit_relocs
10948 #define elf_backend_emit_relocs \
10949 elf_vxworks_emit_relocs
10950
10951 #undef elf32_bed
10952 #define elf32_bed ppc_elf_vxworks_bed
10953 #undef elf_backend_post_process_headers
10954
10955 #include "elf32-target.h"
GDB Binutils - Deliverables
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