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Delete unused elf32-ppc.c code
[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 ((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 BEQLR 0x4d820020
159 #define CMPWI_11_0 0x2c0b0000
160 #define LIS_11 0x3d600000
161 #define LIS_12 0x3d800000
162 #define LWZU_0_12 0x840c0000
163 #define LWZ_0_12 0x800c0000
164 #define LWZ_11_3 0x81630000
165 #define LWZ_11_11 0x816b0000
166 #define LWZ_11_30 0x817e0000
167 #define LWZ_12_3 0x81830000
168 #define LWZ_12_12 0x818c0000
169 #define MR_0_3 0x7c601b78
170 #define MR_3_0 0x7c030378
171 #define MFLR_0 0x7c0802a6
172 #define MFLR_12 0x7d8802a6
173 #define MTCTR_0 0x7c0903a6
174 #define MTCTR_11 0x7d6903a6
175 #define MTLR_0 0x7c0803a6
176 #define NOP 0x60000000
177 #define SUB_11_11_12 0x7d6c5850
178
179 /* Offset of tp and dtp pointers from start of TLS block. */
180 #define TP_OFFSET 0x7000
181 #define DTP_OFFSET 0x8000
182
183 /* The value of a defined global symbol. */
184 #define SYM_VAL(SYM) \
185 ((SYM)->root.u.def.section->output_section->vma \
186 + (SYM)->root.u.def.section->output_offset \
187 + (SYM)->root.u.def.value)
188 \f
189 static reloc_howto_type *ppc_elf_howto_table[R_PPC_max];
190
191 static reloc_howto_type ppc_elf_howto_raw[] = {
192 /* This reloc does nothing. */
193 HOWTO (R_PPC_NONE, /* type */
194 0, /* rightshift */
195 3, /* size (0 = byte, 1 = short, 2 = long) */
196 0, /* bitsize */
197 FALSE, /* pc_relative */
198 0, /* bitpos */
199 complain_overflow_dont, /* complain_on_overflow */
200 bfd_elf_generic_reloc, /* special_function */
201 "R_PPC_NONE", /* name */
202 FALSE, /* partial_inplace */
203 0, /* src_mask */
204 0, /* dst_mask */
205 FALSE), /* pcrel_offset */
206
207 /* A standard 32 bit relocation. */
208 HOWTO (R_PPC_ADDR32, /* type */
209 0, /* rightshift */
210 2, /* size (0 = byte, 1 = short, 2 = long) */
211 32, /* bitsize */
212 FALSE, /* pc_relative */
213 0, /* bitpos */
214 complain_overflow_dont, /* complain_on_overflow */
215 bfd_elf_generic_reloc, /* special_function */
216 "R_PPC_ADDR32", /* name */
217 FALSE, /* partial_inplace */
218 0, /* src_mask */
219 0xffffffff, /* dst_mask */
220 FALSE), /* pcrel_offset */
221
222 /* An absolute 26 bit branch; the lower two bits must be zero.
223 FIXME: we don't check that, we just clear them. */
224 HOWTO (R_PPC_ADDR24, /* type */
225 0, /* rightshift */
226 2, /* size (0 = byte, 1 = short, 2 = long) */
227 26, /* bitsize */
228 FALSE, /* pc_relative */
229 0, /* bitpos */
230 complain_overflow_signed, /* complain_on_overflow */
231 bfd_elf_generic_reloc, /* special_function */
232 "R_PPC_ADDR24", /* name */
233 FALSE, /* partial_inplace */
234 0, /* src_mask */
235 0x3fffffc, /* dst_mask */
236 FALSE), /* pcrel_offset */
237
238 /* A standard 16 bit relocation. */
239 HOWTO (R_PPC_ADDR16, /* type */
240 0, /* rightshift */
241 1, /* size (0 = byte, 1 = short, 2 = long) */
242 16, /* bitsize */
243 FALSE, /* pc_relative */
244 0, /* bitpos */
245 complain_overflow_bitfield, /* complain_on_overflow */
246 bfd_elf_generic_reloc, /* special_function */
247 "R_PPC_ADDR16", /* name */
248 FALSE, /* partial_inplace */
249 0, /* src_mask */
250 0xffff, /* dst_mask */
251 FALSE), /* pcrel_offset */
252
253 /* A 16 bit relocation without overflow. */
254 HOWTO (R_PPC_ADDR16_LO, /* type */
255 0, /* rightshift */
256 1, /* size (0 = byte, 1 = short, 2 = long) */
257 16, /* bitsize */
258 FALSE, /* pc_relative */
259 0, /* bitpos */
260 complain_overflow_dont,/* complain_on_overflow */
261 bfd_elf_generic_reloc, /* special_function */
262 "R_PPC_ADDR16_LO", /* name */
263 FALSE, /* partial_inplace */
264 0, /* src_mask */
265 0xffff, /* dst_mask */
266 FALSE), /* pcrel_offset */
267
268 /* The high order 16 bits of an address. */
269 HOWTO (R_PPC_ADDR16_HI, /* type */
270 16, /* rightshift */
271 1, /* size (0 = byte, 1 = short, 2 = long) */
272 16, /* bitsize */
273 FALSE, /* pc_relative */
274 0, /* bitpos */
275 complain_overflow_dont, /* complain_on_overflow */
276 bfd_elf_generic_reloc, /* special_function */
277 "R_PPC_ADDR16_HI", /* name */
278 FALSE, /* partial_inplace */
279 0, /* src_mask */
280 0xffff, /* dst_mask */
281 FALSE), /* pcrel_offset */
282
283 /* The high order 16 bits of an address, plus 1 if the contents of
284 the low 16 bits, treated as a signed number, is negative. */
285 HOWTO (R_PPC_ADDR16_HA, /* type */
286 16, /* rightshift */
287 1, /* size (0 = byte, 1 = short, 2 = long) */
288 16, /* bitsize */
289 FALSE, /* pc_relative */
290 0, /* bitpos */
291 complain_overflow_dont, /* complain_on_overflow */
292 ppc_elf_addr16_ha_reloc, /* special_function */
293 "R_PPC_ADDR16_HA", /* name */
294 FALSE, /* partial_inplace */
295 0, /* src_mask */
296 0xffff, /* dst_mask */
297 FALSE), /* pcrel_offset */
298
299 /* An absolute 16 bit branch; the lower two bits must be zero.
300 FIXME: we don't check that, we just clear them. */
301 HOWTO (R_PPC_ADDR14, /* type */
302 0, /* rightshift */
303 2, /* size (0 = byte, 1 = short, 2 = long) */
304 16, /* bitsize */
305 FALSE, /* pc_relative */
306 0, /* bitpos */
307 complain_overflow_signed, /* complain_on_overflow */
308 bfd_elf_generic_reloc, /* special_function */
309 "R_PPC_ADDR14", /* name */
310 FALSE, /* partial_inplace */
311 0, /* src_mask */
312 0xfffc, /* dst_mask */
313 FALSE), /* pcrel_offset */
314
315 /* An absolute 16 bit branch, for which bit 10 should be set to
316 indicate that the branch is expected to be taken. The lower two
317 bits must be zero. */
318 HOWTO (R_PPC_ADDR14_BRTAKEN, /* type */
319 0, /* rightshift */
320 2, /* size (0 = byte, 1 = short, 2 = long) */
321 16, /* bitsize */
322 FALSE, /* pc_relative */
323 0, /* bitpos */
324 complain_overflow_signed, /* complain_on_overflow */
325 bfd_elf_generic_reloc, /* special_function */
326 "R_PPC_ADDR14_BRTAKEN",/* name */
327 FALSE, /* partial_inplace */
328 0, /* src_mask */
329 0xfffc, /* dst_mask */
330 FALSE), /* pcrel_offset */
331
332 /* An absolute 16 bit branch, for which bit 10 should be set to
333 indicate that the branch is not expected to be taken. The lower
334 two bits must be zero. */
335 HOWTO (R_PPC_ADDR14_BRNTAKEN, /* type */
336 0, /* rightshift */
337 2, /* size (0 = byte, 1 = short, 2 = long) */
338 16, /* bitsize */
339 FALSE, /* pc_relative */
340 0, /* bitpos */
341 complain_overflow_signed, /* complain_on_overflow */
342 bfd_elf_generic_reloc, /* special_function */
343 "R_PPC_ADDR14_BRNTAKEN",/* name */
344 FALSE, /* partial_inplace */
345 0, /* src_mask */
346 0xfffc, /* dst_mask */
347 FALSE), /* pcrel_offset */
348
349 /* A relative 26 bit branch; the lower two bits must be zero. */
350 HOWTO (R_PPC_REL24, /* type */
351 0, /* rightshift */
352 2, /* size (0 = byte, 1 = short, 2 = long) */
353 26, /* bitsize */
354 TRUE, /* pc_relative */
355 0, /* bitpos */
356 complain_overflow_signed, /* complain_on_overflow */
357 bfd_elf_generic_reloc, /* special_function */
358 "R_PPC_REL24", /* name */
359 FALSE, /* partial_inplace */
360 0, /* src_mask */
361 0x3fffffc, /* dst_mask */
362 TRUE), /* pcrel_offset */
363
364 /* A relative 16 bit branch; the lower two bits must be zero. */
365 HOWTO (R_PPC_REL14, /* type */
366 0, /* rightshift */
367 2, /* size (0 = byte, 1 = short, 2 = long) */
368 16, /* bitsize */
369 TRUE, /* pc_relative */
370 0, /* bitpos */
371 complain_overflow_signed, /* complain_on_overflow */
372 bfd_elf_generic_reloc, /* special_function */
373 "R_PPC_REL14", /* name */
374 FALSE, /* partial_inplace */
375 0, /* src_mask */
376 0xfffc, /* dst_mask */
377 TRUE), /* pcrel_offset */
378
379 /* A relative 16 bit branch. Bit 10 should be set to indicate that
380 the branch is expected to be taken. The lower two bits must be
381 zero. */
382 HOWTO (R_PPC_REL14_BRTAKEN, /* type */
383 0, /* rightshift */
384 2, /* size (0 = byte, 1 = short, 2 = long) */
385 16, /* bitsize */
386 TRUE, /* pc_relative */
387 0, /* bitpos */
388 complain_overflow_signed, /* complain_on_overflow */
389 bfd_elf_generic_reloc, /* special_function */
390 "R_PPC_REL14_BRTAKEN", /* name */
391 FALSE, /* partial_inplace */
392 0, /* src_mask */
393 0xfffc, /* dst_mask */
394 TRUE), /* pcrel_offset */
395
396 /* A relative 16 bit branch. Bit 10 should be set to indicate that
397 the branch is not expected to be taken. The lower two bits must
398 be zero. */
399 HOWTO (R_PPC_REL14_BRNTAKEN, /* type */
400 0, /* rightshift */
401 2, /* size (0 = byte, 1 = short, 2 = long) */
402 16, /* bitsize */
403 TRUE, /* pc_relative */
404 0, /* bitpos */
405 complain_overflow_signed, /* complain_on_overflow */
406 bfd_elf_generic_reloc, /* special_function */
407 "R_PPC_REL14_BRNTAKEN",/* name */
408 FALSE, /* partial_inplace */
409 0, /* src_mask */
410 0xfffc, /* dst_mask */
411 TRUE), /* pcrel_offset */
412
413 /* Like R_PPC_ADDR16, but referring to the GOT table entry for the
414 symbol. */
415 HOWTO (R_PPC_GOT16, /* type */
416 0, /* rightshift */
417 1, /* size (0 = byte, 1 = short, 2 = long) */
418 16, /* bitsize */
419 FALSE, /* pc_relative */
420 0, /* bitpos */
421 complain_overflow_signed, /* complain_on_overflow */
422 ppc_elf_unhandled_reloc, /* special_function */
423 "R_PPC_GOT16", /* name */
424 FALSE, /* partial_inplace */
425 0, /* src_mask */
426 0xffff, /* dst_mask */
427 FALSE), /* pcrel_offset */
428
429 /* Like R_PPC_ADDR16_LO, but referring to the GOT table entry for
430 the symbol. */
431 HOWTO (R_PPC_GOT16_LO, /* type */
432 0, /* rightshift */
433 1, /* size (0 = byte, 1 = short, 2 = long) */
434 16, /* bitsize */
435 FALSE, /* pc_relative */
436 0, /* bitpos */
437 complain_overflow_dont, /* complain_on_overflow */
438 ppc_elf_unhandled_reloc, /* special_function */
439 "R_PPC_GOT16_LO", /* name */
440 FALSE, /* partial_inplace */
441 0, /* src_mask */
442 0xffff, /* dst_mask */
443 FALSE), /* pcrel_offset */
444
445 /* Like R_PPC_ADDR16_HI, but referring to the GOT table entry for
446 the symbol. */
447 HOWTO (R_PPC_GOT16_HI, /* type */
448 16, /* rightshift */
449 1, /* size (0 = byte, 1 = short, 2 = long) */
450 16, /* bitsize */
451 FALSE, /* pc_relative */
452 0, /* bitpos */
453 complain_overflow_dont, /* complain_on_overflow */
454 ppc_elf_unhandled_reloc, /* special_function */
455 "R_PPC_GOT16_HI", /* name */
456 FALSE, /* partial_inplace */
457 0, /* src_mask */
458 0xffff, /* dst_mask */
459 FALSE), /* pcrel_offset */
460
461 /* Like R_PPC_ADDR16_HA, but referring to the GOT table entry for
462 the symbol. */
463 HOWTO (R_PPC_GOT16_HA, /* type */
464 16, /* rightshift */
465 1, /* size (0 = byte, 1 = short, 2 = long) */
466 16, /* bitsize */
467 FALSE, /* pc_relative */
468 0, /* bitpos */
469 complain_overflow_dont, /* complain_on_overflow */
470 ppc_elf_unhandled_reloc, /* special_function */
471 "R_PPC_GOT16_HA", /* name */
472 FALSE, /* partial_inplace */
473 0, /* src_mask */
474 0xffff, /* dst_mask */
475 FALSE), /* pcrel_offset */
476
477 /* Like R_PPC_REL24, but referring to the procedure linkage table
478 entry for the symbol. */
479 HOWTO (R_PPC_PLTREL24, /* type */
480 0, /* rightshift */
481 2, /* size (0 = byte, 1 = short, 2 = long) */
482 26, /* bitsize */
483 TRUE, /* pc_relative */
484 0, /* bitpos */
485 complain_overflow_signed, /* complain_on_overflow */
486 ppc_elf_unhandled_reloc, /* special_function */
487 "R_PPC_PLTREL24", /* name */
488 FALSE, /* partial_inplace */
489 0, /* src_mask */
490 0x3fffffc, /* dst_mask */
491 TRUE), /* pcrel_offset */
492
493 /* This is used only by the dynamic linker. The symbol should exist
494 both in the object being run and in some shared library. The
495 dynamic linker copies the data addressed by the symbol from the
496 shared library into the object, because the object being
497 run has to have the data at some particular address. */
498 HOWTO (R_PPC_COPY, /* type */
499 0, /* rightshift */
500 2, /* size (0 = byte, 1 = short, 2 = long) */
501 32, /* bitsize */
502 FALSE, /* pc_relative */
503 0, /* bitpos */
504 complain_overflow_dont, /* complain_on_overflow */
505 ppc_elf_unhandled_reloc, /* special_function */
506 "R_PPC_COPY", /* name */
507 FALSE, /* partial_inplace */
508 0, /* src_mask */
509 0, /* dst_mask */
510 FALSE), /* pcrel_offset */
511
512 /* Like R_PPC_ADDR32, but used when setting global offset table
513 entries. */
514 HOWTO (R_PPC_GLOB_DAT, /* type */
515 0, /* rightshift */
516 2, /* size (0 = byte, 1 = short, 2 = long) */
517 32, /* bitsize */
518 FALSE, /* pc_relative */
519 0, /* bitpos */
520 complain_overflow_dont, /* complain_on_overflow */
521 ppc_elf_unhandled_reloc, /* special_function */
522 "R_PPC_GLOB_DAT", /* name */
523 FALSE, /* partial_inplace */
524 0, /* src_mask */
525 0xffffffff, /* dst_mask */
526 FALSE), /* pcrel_offset */
527
528 /* Marks a procedure linkage table entry for a symbol. */
529 HOWTO (R_PPC_JMP_SLOT, /* type */
530 0, /* rightshift */
531 2, /* size (0 = byte, 1 = short, 2 = long) */
532 32, /* bitsize */
533 FALSE, /* pc_relative */
534 0, /* bitpos */
535 complain_overflow_dont, /* complain_on_overflow */
536 ppc_elf_unhandled_reloc, /* special_function */
537 "R_PPC_JMP_SLOT", /* name */
538 FALSE, /* partial_inplace */
539 0, /* src_mask */
540 0, /* dst_mask */
541 FALSE), /* pcrel_offset */
542
543 /* Used only by the dynamic linker. When the object is run, this
544 longword is set to the load address of the object, plus the
545 addend. */
546 HOWTO (R_PPC_RELATIVE, /* type */
547 0, /* rightshift */
548 2, /* size (0 = byte, 1 = short, 2 = long) */
549 32, /* bitsize */
550 FALSE, /* pc_relative */
551 0, /* bitpos */
552 complain_overflow_dont, /* complain_on_overflow */
553 bfd_elf_generic_reloc, /* special_function */
554 "R_PPC_RELATIVE", /* name */
555 FALSE, /* partial_inplace */
556 0, /* src_mask */
557 0xffffffff, /* dst_mask */
558 FALSE), /* pcrel_offset */
559
560 /* Like R_PPC_REL24, but uses the value of the symbol within the
561 object rather than the final value. Normally used for
562 _GLOBAL_OFFSET_TABLE_. */
563 HOWTO (R_PPC_LOCAL24PC, /* type */
564 0, /* rightshift */
565 2, /* size (0 = byte, 1 = short, 2 = long) */
566 26, /* bitsize */
567 TRUE, /* pc_relative */
568 0, /* bitpos */
569 complain_overflow_signed, /* complain_on_overflow */
570 bfd_elf_generic_reloc, /* special_function */
571 "R_PPC_LOCAL24PC", /* name */
572 FALSE, /* partial_inplace */
573 0, /* src_mask */
574 0x3fffffc, /* dst_mask */
575 TRUE), /* pcrel_offset */
576
577 /* Like R_PPC_ADDR32, but may be unaligned. */
578 HOWTO (R_PPC_UADDR32, /* type */
579 0, /* rightshift */
580 2, /* size (0 = byte, 1 = short, 2 = long) */
581 32, /* bitsize */
582 FALSE, /* pc_relative */
583 0, /* bitpos */
584 complain_overflow_dont, /* complain_on_overflow */
585 bfd_elf_generic_reloc, /* special_function */
586 "R_PPC_UADDR32", /* name */
587 FALSE, /* partial_inplace */
588 0, /* src_mask */
589 0xffffffff, /* dst_mask */
590 FALSE), /* pcrel_offset */
591
592 /* Like R_PPC_ADDR16, but may be unaligned. */
593 HOWTO (R_PPC_UADDR16, /* type */
594 0, /* rightshift */
595 1, /* size (0 = byte, 1 = short, 2 = long) */
596 16, /* bitsize */
597 FALSE, /* pc_relative */
598 0, /* bitpos */
599 complain_overflow_bitfield, /* complain_on_overflow */
600 bfd_elf_generic_reloc, /* special_function */
601 "R_PPC_UADDR16", /* name */
602 FALSE, /* partial_inplace */
603 0, /* src_mask */
604 0xffff, /* dst_mask */
605 FALSE), /* pcrel_offset */
606
607 /* 32-bit PC relative */
608 HOWTO (R_PPC_REL32, /* type */
609 0, /* rightshift */
610 2, /* size (0 = byte, 1 = short, 2 = long) */
611 32, /* bitsize */
612 TRUE, /* pc_relative */
613 0, /* bitpos */
614 complain_overflow_dont, /* complain_on_overflow */
615 bfd_elf_generic_reloc, /* special_function */
616 "R_PPC_REL32", /* name */
617 FALSE, /* partial_inplace */
618 0, /* src_mask */
619 0xffffffff, /* dst_mask */
620 TRUE), /* pcrel_offset */
621
622 /* 32-bit relocation to the symbol's procedure linkage table.
623 FIXME: not supported. */
624 HOWTO (R_PPC_PLT32, /* type */
625 0, /* rightshift */
626 2, /* size (0 = byte, 1 = short, 2 = long) */
627 32, /* bitsize */
628 FALSE, /* pc_relative */
629 0, /* bitpos */
630 complain_overflow_dont, /* complain_on_overflow */
631 ppc_elf_unhandled_reloc, /* special_function */
632 "R_PPC_PLT32", /* name */
633 FALSE, /* partial_inplace */
634 0, /* src_mask */
635 0, /* dst_mask */
636 FALSE), /* pcrel_offset */
637
638 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
639 FIXME: not supported. */
640 HOWTO (R_PPC_PLTREL32, /* type */
641 0, /* rightshift */
642 2, /* size (0 = byte, 1 = short, 2 = long) */
643 32, /* bitsize */
644 TRUE, /* pc_relative */
645 0, /* bitpos */
646 complain_overflow_dont, /* complain_on_overflow */
647 ppc_elf_unhandled_reloc, /* special_function */
648 "R_PPC_PLTREL32", /* name */
649 FALSE, /* partial_inplace */
650 0, /* src_mask */
651 0, /* dst_mask */
652 TRUE), /* pcrel_offset */
653
654 /* Like R_PPC_ADDR16_LO, but referring to the PLT table entry for
655 the symbol. */
656 HOWTO (R_PPC_PLT16_LO, /* type */
657 0, /* rightshift */
658 1, /* size (0 = byte, 1 = short, 2 = long) */
659 16, /* bitsize */
660 FALSE, /* pc_relative */
661 0, /* bitpos */
662 complain_overflow_dont, /* complain_on_overflow */
663 ppc_elf_unhandled_reloc, /* special_function */
664 "R_PPC_PLT16_LO", /* name */
665 FALSE, /* partial_inplace */
666 0, /* src_mask */
667 0xffff, /* dst_mask */
668 FALSE), /* pcrel_offset */
669
670 /* Like R_PPC_ADDR16_HI, but referring to the PLT table entry for
671 the symbol. */
672 HOWTO (R_PPC_PLT16_HI, /* type */
673 16, /* rightshift */
674 1, /* size (0 = byte, 1 = short, 2 = long) */
675 16, /* bitsize */
676 FALSE, /* pc_relative */
677 0, /* bitpos */
678 complain_overflow_dont, /* complain_on_overflow */
679 ppc_elf_unhandled_reloc, /* special_function */
680 "R_PPC_PLT16_HI", /* name */
681 FALSE, /* partial_inplace */
682 0, /* src_mask */
683 0xffff, /* dst_mask */
684 FALSE), /* pcrel_offset */
685
686 /* Like R_PPC_ADDR16_HA, but referring to the PLT table entry for
687 the symbol. */
688 HOWTO (R_PPC_PLT16_HA, /* type */
689 16, /* rightshift */
690 1, /* size (0 = byte, 1 = short, 2 = long) */
691 16, /* bitsize */
692 FALSE, /* pc_relative */
693 0, /* bitpos */
694 complain_overflow_dont, /* complain_on_overflow */
695 ppc_elf_unhandled_reloc, /* special_function */
696 "R_PPC_PLT16_HA", /* name */
697 FALSE, /* partial_inplace */
698 0, /* src_mask */
699 0xffff, /* dst_mask */
700 FALSE), /* pcrel_offset */
701
702 /* A sign-extended 16 bit value relative to _SDA_BASE_, for use with
703 small data items. */
704 HOWTO (R_PPC_SDAREL16, /* type */
705 0, /* rightshift */
706 1, /* size (0 = byte, 1 = short, 2 = long) */
707 16, /* bitsize */
708 FALSE, /* pc_relative */
709 0, /* bitpos */
710 complain_overflow_signed, /* complain_on_overflow */
711 ppc_elf_unhandled_reloc, /* special_function */
712 "R_PPC_SDAREL16", /* name */
713 FALSE, /* partial_inplace */
714 0, /* src_mask */
715 0xffff, /* dst_mask */
716 FALSE), /* pcrel_offset */
717
718 /* 16-bit section relative relocation. */
719 HOWTO (R_PPC_SECTOFF, /* type */
720 0, /* rightshift */
721 1, /* size (0 = byte, 1 = short, 2 = long) */
722 16, /* bitsize */
723 FALSE, /* pc_relative */
724 0, /* bitpos */
725 complain_overflow_signed, /* complain_on_overflow */
726 ppc_elf_unhandled_reloc, /* special_function */
727 "R_PPC_SECTOFF", /* name */
728 FALSE, /* partial_inplace */
729 0, /* src_mask */
730 0xffff, /* dst_mask */
731 FALSE), /* pcrel_offset */
732
733 /* 16-bit lower half section relative relocation. */
734 HOWTO (R_PPC_SECTOFF_LO, /* type */
735 0, /* rightshift */
736 1, /* size (0 = byte, 1 = short, 2 = long) */
737 16, /* bitsize */
738 FALSE, /* pc_relative */
739 0, /* bitpos */
740 complain_overflow_dont, /* complain_on_overflow */
741 ppc_elf_unhandled_reloc, /* special_function */
742 "R_PPC_SECTOFF_LO", /* name */
743 FALSE, /* partial_inplace */
744 0, /* src_mask */
745 0xffff, /* dst_mask */
746 FALSE), /* pcrel_offset */
747
748 /* 16-bit upper half section relative relocation. */
749 HOWTO (R_PPC_SECTOFF_HI, /* type */
750 16, /* rightshift */
751 1, /* size (0 = byte, 1 = short, 2 = long) */
752 16, /* bitsize */
753 FALSE, /* pc_relative */
754 0, /* bitpos */
755 complain_overflow_dont, /* complain_on_overflow */
756 ppc_elf_unhandled_reloc, /* special_function */
757 "R_PPC_SECTOFF_HI", /* name */
758 FALSE, /* partial_inplace */
759 0, /* src_mask */
760 0xffff, /* dst_mask */
761 FALSE), /* pcrel_offset */
762
763 /* 16-bit upper half adjusted section relative relocation. */
764 HOWTO (R_PPC_SECTOFF_HA, /* type */
765 16, /* rightshift */
766 1, /* size (0 = byte, 1 = short, 2 = long) */
767 16, /* bitsize */
768 FALSE, /* pc_relative */
769 0, /* bitpos */
770 complain_overflow_dont, /* complain_on_overflow */
771 ppc_elf_unhandled_reloc, /* special_function */
772 "R_PPC_SECTOFF_HA", /* name */
773 FALSE, /* partial_inplace */
774 0, /* src_mask */
775 0xffff, /* dst_mask */
776 FALSE), /* pcrel_offset */
777
778 /* Marker relocs for TLS. */
779 HOWTO (R_PPC_TLS,
780 0, /* rightshift */
781 2, /* size (0 = byte, 1 = short, 2 = long) */
782 32, /* bitsize */
783 FALSE, /* pc_relative */
784 0, /* bitpos */
785 complain_overflow_dont, /* complain_on_overflow */
786 bfd_elf_generic_reloc, /* special_function */
787 "R_PPC_TLS", /* name */
788 FALSE, /* partial_inplace */
789 0, /* src_mask */
790 0, /* dst_mask */
791 FALSE), /* pcrel_offset */
792
793 HOWTO (R_PPC_TLSGD,
794 0, /* rightshift */
795 2, /* size (0 = byte, 1 = short, 2 = long) */
796 32, /* bitsize */
797 FALSE, /* pc_relative */
798 0, /* bitpos */
799 complain_overflow_dont, /* complain_on_overflow */
800 bfd_elf_generic_reloc, /* special_function */
801 "R_PPC_TLSGD", /* name */
802 FALSE, /* partial_inplace */
803 0, /* src_mask */
804 0, /* dst_mask */
805 FALSE), /* pcrel_offset */
806
807 HOWTO (R_PPC_TLSLD,
808 0, /* rightshift */
809 2, /* size (0 = byte, 1 = short, 2 = long) */
810 32, /* bitsize */
811 FALSE, /* pc_relative */
812 0, /* bitpos */
813 complain_overflow_dont, /* complain_on_overflow */
814 bfd_elf_generic_reloc, /* special_function */
815 "R_PPC_TLSLD", /* name */
816 FALSE, /* partial_inplace */
817 0, /* src_mask */
818 0, /* dst_mask */
819 FALSE), /* pcrel_offset */
820
821 /* Computes the load module index of the load module that contains the
822 definition of its TLS sym. */
823 HOWTO (R_PPC_DTPMOD32,
824 0, /* rightshift */
825 2, /* size (0 = byte, 1 = short, 2 = long) */
826 32, /* bitsize */
827 FALSE, /* pc_relative */
828 0, /* bitpos */
829 complain_overflow_dont, /* complain_on_overflow */
830 ppc_elf_unhandled_reloc, /* special_function */
831 "R_PPC_DTPMOD32", /* name */
832 FALSE, /* partial_inplace */
833 0, /* src_mask */
834 0xffffffff, /* dst_mask */
835 FALSE), /* pcrel_offset */
836
837 /* Computes a dtv-relative displacement, the difference between the value
838 of sym+add and the base address of the thread-local storage block that
839 contains the definition of sym, minus 0x8000. */
840 HOWTO (R_PPC_DTPREL32,
841 0, /* rightshift */
842 2, /* size (0 = byte, 1 = short, 2 = long) */
843 32, /* bitsize */
844 FALSE, /* pc_relative */
845 0, /* bitpos */
846 complain_overflow_dont, /* complain_on_overflow */
847 ppc_elf_unhandled_reloc, /* special_function */
848 "R_PPC_DTPREL32", /* name */
849 FALSE, /* partial_inplace */
850 0, /* src_mask */
851 0xffffffff, /* dst_mask */
852 FALSE), /* pcrel_offset */
853
854 /* A 16 bit dtprel reloc. */
855 HOWTO (R_PPC_DTPREL16,
856 0, /* rightshift */
857 1, /* size (0 = byte, 1 = short, 2 = long) */
858 16, /* bitsize */
859 FALSE, /* pc_relative */
860 0, /* bitpos */
861 complain_overflow_signed, /* complain_on_overflow */
862 ppc_elf_unhandled_reloc, /* special_function */
863 "R_PPC_DTPREL16", /* name */
864 FALSE, /* partial_inplace */
865 0, /* src_mask */
866 0xffff, /* dst_mask */
867 FALSE), /* pcrel_offset */
868
869 /* Like DTPREL16, but no overflow. */
870 HOWTO (R_PPC_DTPREL16_LO,
871 0, /* rightshift */
872 1, /* size (0 = byte, 1 = short, 2 = long) */
873 16, /* bitsize */
874 FALSE, /* pc_relative */
875 0, /* bitpos */
876 complain_overflow_dont, /* complain_on_overflow */
877 ppc_elf_unhandled_reloc, /* special_function */
878 "R_PPC_DTPREL16_LO", /* name */
879 FALSE, /* partial_inplace */
880 0, /* src_mask */
881 0xffff, /* dst_mask */
882 FALSE), /* pcrel_offset */
883
884 /* Like DTPREL16_LO, but next higher group of 16 bits. */
885 HOWTO (R_PPC_DTPREL16_HI,
886 16, /* rightshift */
887 1, /* size (0 = byte, 1 = short, 2 = long) */
888 16, /* bitsize */
889 FALSE, /* pc_relative */
890 0, /* bitpos */
891 complain_overflow_dont, /* complain_on_overflow */
892 ppc_elf_unhandled_reloc, /* special_function */
893 "R_PPC_DTPREL16_HI", /* name */
894 FALSE, /* partial_inplace */
895 0, /* src_mask */
896 0xffff, /* dst_mask */
897 FALSE), /* pcrel_offset */
898
899 /* Like DTPREL16_HI, but adjust for low 16 bits. */
900 HOWTO (R_PPC_DTPREL16_HA,
901 16, /* rightshift */
902 1, /* size (0 = byte, 1 = short, 2 = long) */
903 16, /* bitsize */
904 FALSE, /* pc_relative */
905 0, /* bitpos */
906 complain_overflow_dont, /* complain_on_overflow */
907 ppc_elf_unhandled_reloc, /* special_function */
908 "R_PPC_DTPREL16_HA", /* name */
909 FALSE, /* partial_inplace */
910 0, /* src_mask */
911 0xffff, /* dst_mask */
912 FALSE), /* pcrel_offset */
913
914 /* Computes a tp-relative displacement, the difference between the value of
915 sym+add and the value of the thread pointer (r13). */
916 HOWTO (R_PPC_TPREL32,
917 0, /* rightshift */
918 2, /* size (0 = byte, 1 = short, 2 = long) */
919 32, /* bitsize */
920 FALSE, /* pc_relative */
921 0, /* bitpos */
922 complain_overflow_dont, /* complain_on_overflow */
923 ppc_elf_unhandled_reloc, /* special_function */
924 "R_PPC_TPREL32", /* name */
925 FALSE, /* partial_inplace */
926 0, /* src_mask */
927 0xffffffff, /* dst_mask */
928 FALSE), /* pcrel_offset */
929
930 /* A 16 bit tprel reloc. */
931 HOWTO (R_PPC_TPREL16,
932 0, /* rightshift */
933 1, /* size (0 = byte, 1 = short, 2 = long) */
934 16, /* bitsize */
935 FALSE, /* pc_relative */
936 0, /* bitpos */
937 complain_overflow_signed, /* complain_on_overflow */
938 ppc_elf_unhandled_reloc, /* special_function */
939 "R_PPC_TPREL16", /* name */
940 FALSE, /* partial_inplace */
941 0, /* src_mask */
942 0xffff, /* dst_mask */
943 FALSE), /* pcrel_offset */
944
945 /* Like TPREL16, but no overflow. */
946 HOWTO (R_PPC_TPREL16_LO,
947 0, /* rightshift */
948 1, /* size (0 = byte, 1 = short, 2 = long) */
949 16, /* bitsize */
950 FALSE, /* pc_relative */
951 0, /* bitpos */
952 complain_overflow_dont, /* complain_on_overflow */
953 ppc_elf_unhandled_reloc, /* special_function */
954 "R_PPC_TPREL16_LO", /* name */
955 FALSE, /* partial_inplace */
956 0, /* src_mask */
957 0xffff, /* dst_mask */
958 FALSE), /* pcrel_offset */
959
960 /* Like TPREL16_LO, but next higher group of 16 bits. */
961 HOWTO (R_PPC_TPREL16_HI,
962 16, /* rightshift */
963 1, /* size (0 = byte, 1 = short, 2 = long) */
964 16, /* bitsize */
965 FALSE, /* pc_relative */
966 0, /* bitpos */
967 complain_overflow_dont, /* complain_on_overflow */
968 ppc_elf_unhandled_reloc, /* special_function */
969 "R_PPC_TPREL16_HI", /* name */
970 FALSE, /* partial_inplace */
971 0, /* src_mask */
972 0xffff, /* dst_mask */
973 FALSE), /* pcrel_offset */
974
975 /* Like TPREL16_HI, but adjust for low 16 bits. */
976 HOWTO (R_PPC_TPREL16_HA,
977 16, /* rightshift */
978 1, /* size (0 = byte, 1 = short, 2 = long) */
979 16, /* bitsize */
980 FALSE, /* pc_relative */
981 0, /* bitpos */
982 complain_overflow_dont, /* complain_on_overflow */
983 ppc_elf_unhandled_reloc, /* special_function */
984 "R_PPC_TPREL16_HA", /* name */
985 FALSE, /* partial_inplace */
986 0, /* src_mask */
987 0xffff, /* dst_mask */
988 FALSE), /* pcrel_offset */
989
990 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
991 with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
992 to the first entry. */
993 HOWTO (R_PPC_GOT_TLSGD16,
994 0, /* rightshift */
995 1, /* size (0 = byte, 1 = short, 2 = long) */
996 16, /* bitsize */
997 FALSE, /* pc_relative */
998 0, /* bitpos */
999 complain_overflow_signed, /* complain_on_overflow */
1000 ppc_elf_unhandled_reloc, /* special_function */
1001 "R_PPC_GOT_TLSGD16", /* name */
1002 FALSE, /* partial_inplace */
1003 0, /* src_mask */
1004 0xffff, /* dst_mask */
1005 FALSE), /* pcrel_offset */
1006
1007 /* Like GOT_TLSGD16, but no overflow. */
1008 HOWTO (R_PPC_GOT_TLSGD16_LO,
1009 0, /* rightshift */
1010 1, /* size (0 = byte, 1 = short, 2 = long) */
1011 16, /* bitsize */
1012 FALSE, /* pc_relative */
1013 0, /* bitpos */
1014 complain_overflow_dont, /* complain_on_overflow */
1015 ppc_elf_unhandled_reloc, /* special_function */
1016 "R_PPC_GOT_TLSGD16_LO", /* name */
1017 FALSE, /* partial_inplace */
1018 0, /* src_mask */
1019 0xffff, /* dst_mask */
1020 FALSE), /* pcrel_offset */
1021
1022 /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
1023 HOWTO (R_PPC_GOT_TLSGD16_HI,
1024 16, /* rightshift */
1025 1, /* size (0 = byte, 1 = short, 2 = long) */
1026 16, /* bitsize */
1027 FALSE, /* pc_relative */
1028 0, /* bitpos */
1029 complain_overflow_dont, /* complain_on_overflow */
1030 ppc_elf_unhandled_reloc, /* special_function */
1031 "R_PPC_GOT_TLSGD16_HI", /* name */
1032 FALSE, /* partial_inplace */
1033 0, /* src_mask */
1034 0xffff, /* dst_mask */
1035 FALSE), /* pcrel_offset */
1036
1037 /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
1038 HOWTO (R_PPC_GOT_TLSGD16_HA,
1039 16, /* rightshift */
1040 1, /* size (0 = byte, 1 = short, 2 = long) */
1041 16, /* bitsize */
1042 FALSE, /* pc_relative */
1043 0, /* bitpos */
1044 complain_overflow_dont, /* complain_on_overflow */
1045 ppc_elf_unhandled_reloc, /* special_function */
1046 "R_PPC_GOT_TLSGD16_HA", /* name */
1047 FALSE, /* partial_inplace */
1048 0, /* src_mask */
1049 0xffff, /* dst_mask */
1050 FALSE), /* pcrel_offset */
1051
1052 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1053 with values (sym+add)@dtpmod and zero, and computes the offset to the
1054 first entry. */
1055 HOWTO (R_PPC_GOT_TLSLD16,
1056 0, /* rightshift */
1057 1, /* size (0 = byte, 1 = short, 2 = long) */
1058 16, /* bitsize */
1059 FALSE, /* pc_relative */
1060 0, /* bitpos */
1061 complain_overflow_signed, /* complain_on_overflow */
1062 ppc_elf_unhandled_reloc, /* special_function */
1063 "R_PPC_GOT_TLSLD16", /* name */
1064 FALSE, /* partial_inplace */
1065 0, /* src_mask */
1066 0xffff, /* dst_mask */
1067 FALSE), /* pcrel_offset */
1068
1069 /* Like GOT_TLSLD16, but no overflow. */
1070 HOWTO (R_PPC_GOT_TLSLD16_LO,
1071 0, /* rightshift */
1072 1, /* size (0 = byte, 1 = short, 2 = long) */
1073 16, /* bitsize */
1074 FALSE, /* pc_relative */
1075 0, /* bitpos */
1076 complain_overflow_dont, /* complain_on_overflow */
1077 ppc_elf_unhandled_reloc, /* special_function */
1078 "R_PPC_GOT_TLSLD16_LO", /* name */
1079 FALSE, /* partial_inplace */
1080 0, /* src_mask */
1081 0xffff, /* dst_mask */
1082 FALSE), /* pcrel_offset */
1083
1084 /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
1085 HOWTO (R_PPC_GOT_TLSLD16_HI,
1086 16, /* rightshift */
1087 1, /* size (0 = byte, 1 = short, 2 = long) */
1088 16, /* bitsize */
1089 FALSE, /* pc_relative */
1090 0, /* bitpos */
1091 complain_overflow_dont, /* complain_on_overflow */
1092 ppc_elf_unhandled_reloc, /* special_function */
1093 "R_PPC_GOT_TLSLD16_HI", /* name */
1094 FALSE, /* partial_inplace */
1095 0, /* src_mask */
1096 0xffff, /* dst_mask */
1097 FALSE), /* pcrel_offset */
1098
1099 /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
1100 HOWTO (R_PPC_GOT_TLSLD16_HA,
1101 16, /* rightshift */
1102 1, /* size (0 = byte, 1 = short, 2 = long) */
1103 16, /* bitsize */
1104 FALSE, /* pc_relative */
1105 0, /* bitpos */
1106 complain_overflow_dont, /* complain_on_overflow */
1107 ppc_elf_unhandled_reloc, /* special_function */
1108 "R_PPC_GOT_TLSLD16_HA", /* name */
1109 FALSE, /* partial_inplace */
1110 0, /* src_mask */
1111 0xffff, /* dst_mask */
1112 FALSE), /* pcrel_offset */
1113
1114 /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
1115 the offset to the entry. */
1116 HOWTO (R_PPC_GOT_DTPREL16,
1117 0, /* rightshift */
1118 1, /* size (0 = byte, 1 = short, 2 = long) */
1119 16, /* bitsize */
1120 FALSE, /* pc_relative */
1121 0, /* bitpos */
1122 complain_overflow_signed, /* complain_on_overflow */
1123 ppc_elf_unhandled_reloc, /* special_function */
1124 "R_PPC_GOT_DTPREL16", /* name */
1125 FALSE, /* partial_inplace */
1126 0, /* src_mask */
1127 0xffff, /* dst_mask */
1128 FALSE), /* pcrel_offset */
1129
1130 /* Like GOT_DTPREL16, but no overflow. */
1131 HOWTO (R_PPC_GOT_DTPREL16_LO,
1132 0, /* rightshift */
1133 1, /* size (0 = byte, 1 = short, 2 = long) */
1134 16, /* bitsize */
1135 FALSE, /* pc_relative */
1136 0, /* bitpos */
1137 complain_overflow_dont, /* complain_on_overflow */
1138 ppc_elf_unhandled_reloc, /* special_function */
1139 "R_PPC_GOT_DTPREL16_LO", /* name */
1140 FALSE, /* partial_inplace */
1141 0, /* src_mask */
1142 0xffff, /* dst_mask */
1143 FALSE), /* pcrel_offset */
1144
1145 /* Like GOT_DTPREL16_LO, but next higher group of 16 bits. */
1146 HOWTO (R_PPC_GOT_DTPREL16_HI,
1147 16, /* rightshift */
1148 1, /* size (0 = byte, 1 = short, 2 = long) */
1149 16, /* bitsize */
1150 FALSE, /* pc_relative */
1151 0, /* bitpos */
1152 complain_overflow_dont, /* complain_on_overflow */
1153 ppc_elf_unhandled_reloc, /* special_function */
1154 "R_PPC_GOT_DTPREL16_HI", /* name */
1155 FALSE, /* partial_inplace */
1156 0, /* src_mask */
1157 0xffff, /* dst_mask */
1158 FALSE), /* pcrel_offset */
1159
1160 /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
1161 HOWTO (R_PPC_GOT_DTPREL16_HA,
1162 16, /* rightshift */
1163 1, /* size (0 = byte, 1 = short, 2 = long) */
1164 16, /* bitsize */
1165 FALSE, /* pc_relative */
1166 0, /* bitpos */
1167 complain_overflow_dont, /* complain_on_overflow */
1168 ppc_elf_unhandled_reloc, /* special_function */
1169 "R_PPC_GOT_DTPREL16_HA", /* name */
1170 FALSE, /* partial_inplace */
1171 0, /* src_mask */
1172 0xffff, /* dst_mask */
1173 FALSE), /* pcrel_offset */
1174
1175 /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
1176 offset to the entry. */
1177 HOWTO (R_PPC_GOT_TPREL16,
1178 0, /* rightshift */
1179 1, /* size (0 = byte, 1 = short, 2 = long) */
1180 16, /* bitsize */
1181 FALSE, /* pc_relative */
1182 0, /* bitpos */
1183 complain_overflow_signed, /* complain_on_overflow */
1184 ppc_elf_unhandled_reloc, /* special_function */
1185 "R_PPC_GOT_TPREL16", /* name */
1186 FALSE, /* partial_inplace */
1187 0, /* src_mask */
1188 0xffff, /* dst_mask */
1189 FALSE), /* pcrel_offset */
1190
1191 /* Like GOT_TPREL16, but no overflow. */
1192 HOWTO (R_PPC_GOT_TPREL16_LO,
1193 0, /* rightshift */
1194 1, /* size (0 = byte, 1 = short, 2 = long) */
1195 16, /* bitsize */
1196 FALSE, /* pc_relative */
1197 0, /* bitpos */
1198 complain_overflow_dont, /* complain_on_overflow */
1199 ppc_elf_unhandled_reloc, /* special_function */
1200 "R_PPC_GOT_TPREL16_LO", /* name */
1201 FALSE, /* partial_inplace */
1202 0, /* src_mask */
1203 0xffff, /* dst_mask */
1204 FALSE), /* pcrel_offset */
1205
1206 /* Like GOT_TPREL16_LO, but next higher group of 16 bits. */
1207 HOWTO (R_PPC_GOT_TPREL16_HI,
1208 16, /* rightshift */
1209 1, /* size (0 = byte, 1 = short, 2 = long) */
1210 16, /* bitsize */
1211 FALSE, /* pc_relative */
1212 0, /* bitpos */
1213 complain_overflow_dont, /* complain_on_overflow */
1214 ppc_elf_unhandled_reloc, /* special_function */
1215 "R_PPC_GOT_TPREL16_HI", /* name */
1216 FALSE, /* partial_inplace */
1217 0, /* src_mask */
1218 0xffff, /* dst_mask */
1219 FALSE), /* pcrel_offset */
1220
1221 /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
1222 HOWTO (R_PPC_GOT_TPREL16_HA,
1223 16, /* rightshift */
1224 1, /* size (0 = byte, 1 = short, 2 = long) */
1225 16, /* bitsize */
1226 FALSE, /* pc_relative */
1227 0, /* bitpos */
1228 complain_overflow_dont, /* complain_on_overflow */
1229 ppc_elf_unhandled_reloc, /* special_function */
1230 "R_PPC_GOT_TPREL16_HA", /* name */
1231 FALSE, /* partial_inplace */
1232 0, /* src_mask */
1233 0xffff, /* dst_mask */
1234 FALSE), /* pcrel_offset */
1235
1236 /* The remaining relocs are from the Embedded ELF ABI, and are not
1237 in the SVR4 ELF ABI. */
1238
1239 /* 32 bit value resulting from the addend minus the symbol. */
1240 HOWTO (R_PPC_EMB_NADDR32, /* type */
1241 0, /* rightshift */
1242 2, /* size (0 = byte, 1 = short, 2 = long) */
1243 32, /* bitsize */
1244 FALSE, /* pc_relative */
1245 0, /* bitpos */
1246 complain_overflow_dont, /* complain_on_overflow */
1247 ppc_elf_unhandled_reloc, /* special_function */
1248 "R_PPC_EMB_NADDR32", /* name */
1249 FALSE, /* partial_inplace */
1250 0, /* src_mask */
1251 0xffffffff, /* dst_mask */
1252 FALSE), /* pcrel_offset */
1253
1254 /* 16 bit value resulting from the addend minus the symbol. */
1255 HOWTO (R_PPC_EMB_NADDR16, /* type */
1256 0, /* rightshift */
1257 1, /* size (0 = byte, 1 = short, 2 = long) */
1258 16, /* bitsize */
1259 FALSE, /* pc_relative */
1260 0, /* bitpos */
1261 complain_overflow_signed, /* complain_on_overflow */
1262 ppc_elf_unhandled_reloc, /* special_function */
1263 "R_PPC_EMB_NADDR16", /* name */
1264 FALSE, /* partial_inplace */
1265 0, /* src_mask */
1266 0xffff, /* dst_mask */
1267 FALSE), /* pcrel_offset */
1268
1269 /* 16 bit value resulting from the addend minus the symbol. */
1270 HOWTO (R_PPC_EMB_NADDR16_LO, /* type */
1271 0, /* rightshift */
1272 1, /* size (0 = byte, 1 = short, 2 = long) */
1273 16, /* bitsize */
1274 FALSE, /* pc_relative */
1275 0, /* bitpos */
1276 complain_overflow_dont,/* complain_on_overflow */
1277 ppc_elf_unhandled_reloc, /* special_function */
1278 "R_PPC_EMB_ADDR16_LO", /* name */
1279 FALSE, /* partial_inplace */
1280 0, /* src_mask */
1281 0xffff, /* dst_mask */
1282 FALSE), /* pcrel_offset */
1283
1284 /* The high order 16 bits of the addend minus the symbol. */
1285 HOWTO (R_PPC_EMB_NADDR16_HI, /* type */
1286 16, /* rightshift */
1287 1, /* size (0 = byte, 1 = short, 2 = long) */
1288 16, /* bitsize */
1289 FALSE, /* pc_relative */
1290 0, /* bitpos */
1291 complain_overflow_dont, /* complain_on_overflow */
1292 ppc_elf_unhandled_reloc, /* special_function */
1293 "R_PPC_EMB_NADDR16_HI", /* name */
1294 FALSE, /* partial_inplace */
1295 0, /* src_mask */
1296 0xffff, /* dst_mask */
1297 FALSE), /* pcrel_offset */
1298
1299 /* The high order 16 bits of the result of the addend minus the address,
1300 plus 1 if the contents of the low 16 bits, treated as a signed number,
1301 is negative. */
1302 HOWTO (R_PPC_EMB_NADDR16_HA, /* type */
1303 16, /* rightshift */
1304 1, /* size (0 = byte, 1 = short, 2 = long) */
1305 16, /* bitsize */
1306 FALSE, /* pc_relative */
1307 0, /* bitpos */
1308 complain_overflow_dont, /* complain_on_overflow */
1309 ppc_elf_unhandled_reloc, /* special_function */
1310 "R_PPC_EMB_NADDR16_HA", /* name */
1311 FALSE, /* partial_inplace */
1312 0, /* src_mask */
1313 0xffff, /* dst_mask */
1314 FALSE), /* pcrel_offset */
1315
1316 /* 16 bit value resulting from allocating a 4 byte word to hold an
1317 address in the .sdata section, and returning the offset from
1318 _SDA_BASE_ for that relocation. */
1319 HOWTO (R_PPC_EMB_SDAI16, /* type */
1320 0, /* rightshift */
1321 1, /* size (0 = byte, 1 = short, 2 = long) */
1322 16, /* bitsize */
1323 FALSE, /* pc_relative */
1324 0, /* bitpos */
1325 complain_overflow_signed, /* complain_on_overflow */
1326 ppc_elf_unhandled_reloc, /* special_function */
1327 "R_PPC_EMB_SDAI16", /* name */
1328 FALSE, /* partial_inplace */
1329 0, /* src_mask */
1330 0xffff, /* dst_mask */
1331 FALSE), /* pcrel_offset */
1332
1333 /* 16 bit value resulting from allocating a 4 byte word to hold an
1334 address in the .sdata2 section, and returning the offset from
1335 _SDA2_BASE_ for that relocation. */
1336 HOWTO (R_PPC_EMB_SDA2I16, /* type */
1337 0, /* rightshift */
1338 1, /* size (0 = byte, 1 = short, 2 = long) */
1339 16, /* bitsize */
1340 FALSE, /* pc_relative */
1341 0, /* bitpos */
1342 complain_overflow_signed, /* complain_on_overflow */
1343 ppc_elf_unhandled_reloc, /* special_function */
1344 "R_PPC_EMB_SDA2I16", /* name */
1345 FALSE, /* partial_inplace */
1346 0, /* src_mask */
1347 0xffff, /* dst_mask */
1348 FALSE), /* pcrel_offset */
1349
1350 /* A sign-extended 16 bit value relative to _SDA2_BASE_, for use with
1351 small data items. */
1352 HOWTO (R_PPC_EMB_SDA2REL, /* type */
1353 0, /* rightshift */
1354 1, /* size (0 = byte, 1 = short, 2 = long) */
1355 16, /* bitsize */
1356 FALSE, /* pc_relative */
1357 0, /* bitpos */
1358 complain_overflow_signed, /* complain_on_overflow */
1359 ppc_elf_unhandled_reloc, /* special_function */
1360 "R_PPC_EMB_SDA2REL", /* name */
1361 FALSE, /* partial_inplace */
1362 0, /* src_mask */
1363 0xffff, /* dst_mask */
1364 FALSE), /* pcrel_offset */
1365
1366 /* Relocate against either _SDA_BASE_ or _SDA2_BASE_, filling in the 16 bit
1367 signed offset from the appropriate base, and filling in the register
1368 field with the appropriate register (0, 2, or 13). */
1369 HOWTO (R_PPC_EMB_SDA21, /* type */
1370 0, /* rightshift */
1371 2, /* size (0 = byte, 1 = short, 2 = long) */
1372 16, /* bitsize */
1373 FALSE, /* pc_relative */
1374 0, /* bitpos */
1375 complain_overflow_signed, /* complain_on_overflow */
1376 ppc_elf_unhandled_reloc, /* special_function */
1377 "R_PPC_EMB_SDA21", /* name */
1378 FALSE, /* partial_inplace */
1379 0, /* src_mask */
1380 0xffff, /* dst_mask */
1381 FALSE), /* pcrel_offset */
1382
1383 /* Relocation not handled: R_PPC_EMB_MRKREF */
1384 /* Relocation not handled: R_PPC_EMB_RELSEC16 */
1385 /* Relocation not handled: R_PPC_EMB_RELST_LO */
1386 /* Relocation not handled: R_PPC_EMB_RELST_HI */
1387 /* Relocation not handled: R_PPC_EMB_RELST_HA */
1388 /* Relocation not handled: R_PPC_EMB_BIT_FLD */
1389
1390 /* PC relative relocation against either _SDA_BASE_ or _SDA2_BASE_, filling
1391 in the 16 bit signed offset from the appropriate base, and filling in the
1392 register field with the appropriate register (0, 2, or 13). */
1393 HOWTO (R_PPC_EMB_RELSDA, /* type */
1394 0, /* rightshift */
1395 1, /* size (0 = byte, 1 = short, 2 = long) */
1396 16, /* bitsize */
1397 FALSE, /* pc_relative */
1398 0, /* bitpos */
1399 complain_overflow_signed, /* complain_on_overflow */
1400 ppc_elf_unhandled_reloc, /* special_function */
1401 "R_PPC_EMB_RELSDA", /* name */
1402 FALSE, /* partial_inplace */
1403 0, /* src_mask */
1404 0xffff, /* dst_mask */
1405 FALSE), /* pcrel_offset */
1406
1407 /* A relative 8 bit branch. */
1408 HOWTO (R_PPC_VLE_REL8, /* type */
1409 1, /* rightshift */
1410 1, /* size (0 = byte, 1 = short, 2 = long) */
1411 8, /* bitsize */
1412 TRUE, /* pc_relative */
1413 0, /* bitpos */
1414 complain_overflow_signed, /* complain_on_overflow */
1415 bfd_elf_generic_reloc, /* special_function */
1416 "R_PPC_VLE_REL8", /* name */
1417 FALSE, /* partial_inplace */
1418 0, /* src_mask */
1419 0xff, /* dst_mask */
1420 TRUE), /* pcrel_offset */
1421
1422 /* A relative 15 bit branch. */
1423 HOWTO (R_PPC_VLE_REL15, /* type */
1424 1, /* rightshift */
1425 2, /* size (0 = byte, 1 = short, 2 = long) */
1426 15, /* bitsize */
1427 TRUE, /* pc_relative */
1428 1, /* bitpos */
1429 complain_overflow_signed, /* complain_on_overflow */
1430 bfd_elf_generic_reloc, /* special_function */
1431 "R_PPC_VLE_REL15", /* name */
1432 FALSE, /* partial_inplace */
1433 0, /* src_mask */
1434 0xfffe, /* dst_mask */
1435 TRUE), /* pcrel_offset */
1436
1437 /* A relative 24 bit branch. */
1438 HOWTO (R_PPC_VLE_REL24, /* type */
1439 1, /* rightshift */
1440 2, /* size (0 = byte, 1 = short, 2 = long) */
1441 24, /* bitsize */
1442 TRUE, /* pc_relative */
1443 1, /* bitpos */
1444 complain_overflow_signed, /* complain_on_overflow */
1445 bfd_elf_generic_reloc, /* special_function */
1446 "R_PPC_VLE_REL24", /* name */
1447 FALSE, /* partial_inplace */
1448 0, /* src_mask */
1449 0x1fffffe, /* dst_mask */
1450 TRUE), /* pcrel_offset */
1451
1452 /* The 16 LSBS in split16a format. */
1453 HOWTO (R_PPC_VLE_LO16A, /* type */
1454 0, /* rightshift */
1455 2, /* size (0 = byte, 1 = short, 2 = long) */
1456 16, /* bitsize */
1457 FALSE, /* pc_relative */
1458 0, /* bitpos */
1459 complain_overflow_dont, /* complain_on_overflow */
1460 ppc_elf_unhandled_reloc, /* special_function */
1461 "R_PPC_VLE_LO16A", /* name */
1462 FALSE, /* partial_inplace */
1463 0, /* src_mask */
1464 0x1f07ff, /* dst_mask */
1465 FALSE), /* pcrel_offset */
1466
1467 /* The 16 LSBS in split16d format. */
1468 HOWTO (R_PPC_VLE_LO16D, /* type */
1469 0, /* rightshift */
1470 2, /* size (0 = byte, 1 = short, 2 = long) */
1471 16, /* bitsize */
1472 FALSE, /* pc_relative */
1473 0, /* bitpos */
1474 complain_overflow_dont, /* complain_on_overflow */
1475 ppc_elf_unhandled_reloc, /* special_function */
1476 "R_PPC_VLE_LO16D", /* name */
1477 FALSE, /* partial_inplace */
1478 0, /* src_mask */
1479 0x3e007ff, /* dst_mask */
1480 FALSE), /* pcrel_offset */
1481
1482 /* Bits 16-31 split16a format. */
1483 HOWTO (R_PPC_VLE_HI16A, /* type */
1484 16, /* rightshift */
1485 2, /* size (0 = byte, 1 = short, 2 = long) */
1486 16, /* bitsize */
1487 FALSE, /* pc_relative */
1488 0, /* bitpos */
1489 complain_overflow_dont, /* complain_on_overflow */
1490 ppc_elf_unhandled_reloc, /* special_function */
1491 "R_PPC_VLE_HI16A", /* name */
1492 FALSE, /* partial_inplace */
1493 0, /* src_mask */
1494 0x1f07ff, /* dst_mask */
1495 FALSE), /* pcrel_offset */
1496
1497 /* Bits 16-31 split16d format. */
1498 HOWTO (R_PPC_VLE_HI16D, /* type */
1499 16, /* rightshift */
1500 2, /* size (0 = byte, 1 = short, 2 = long) */
1501 16, /* bitsize */
1502 FALSE, /* pc_relative */
1503 0, /* bitpos */
1504 complain_overflow_dont, /* complain_on_overflow */
1505 ppc_elf_unhandled_reloc, /* special_function */
1506 "R_PPC_VLE_HI16D", /* name */
1507 FALSE, /* partial_inplace */
1508 0, /* src_mask */
1509 0x3e007ff, /* dst_mask */
1510 FALSE), /* pcrel_offset */
1511
1512 /* Bits 16-31 (High Adjusted) in split16a format. */
1513 HOWTO (R_PPC_VLE_HA16A, /* type */
1514 16, /* rightshift */
1515 2, /* size (0 = byte, 1 = short, 2 = long) */
1516 16, /* bitsize */
1517 FALSE, /* pc_relative */
1518 0, /* bitpos */
1519 complain_overflow_dont, /* complain_on_overflow */
1520 ppc_elf_unhandled_reloc, /* special_function */
1521 "R_PPC_VLE_HA16A", /* name */
1522 FALSE, /* partial_inplace */
1523 0, /* src_mask */
1524 0x1f07ff, /* dst_mask */
1525 FALSE), /* pcrel_offset */
1526
1527 /* Bits 16-31 (High Adjusted) in split16d format. */
1528 HOWTO (R_PPC_VLE_HA16D, /* type */
1529 16, /* rightshift */
1530 2, /* size (0 = byte, 1 = short, 2 = long) */
1531 16, /* bitsize */
1532 FALSE, /* pc_relative */
1533 0, /* bitpos */
1534 complain_overflow_dont, /* complain_on_overflow */
1535 ppc_elf_unhandled_reloc, /* special_function */
1536 "R_PPC_VLE_HA16D", /* name */
1537 FALSE, /* partial_inplace */
1538 0, /* src_mask */
1539 0x3e007ff, /* dst_mask */
1540 FALSE), /* pcrel_offset */
1541
1542 /* This reloc is like R_PPC_EMB_SDA21 but only applies to e_add16i
1543 instructions. If the register base is 0 then the linker changes
1544 the e_add16i to an e_li instruction. */
1545 HOWTO (R_PPC_VLE_SDA21, /* type */
1546 0, /* rightshift */
1547 2, /* size (0 = byte, 1 = short, 2 = long) */
1548 16, /* bitsize */
1549 FALSE, /* pc_relative */
1550 0, /* bitpos */
1551 complain_overflow_signed, /* complain_on_overflow */
1552 ppc_elf_unhandled_reloc, /* special_function */
1553 "R_PPC_VLE_SDA21", /* name */
1554 FALSE, /* partial_inplace */
1555 0, /* src_mask */
1556 0xffff, /* dst_mask */
1557 FALSE), /* pcrel_offset */
1558
1559 /* Like R_PPC_VLE_SDA21 but ignore overflow. */
1560 HOWTO (R_PPC_VLE_SDA21_LO, /* type */
1561 0, /* rightshift */
1562 2, /* size (0 = byte, 1 = short, 2 = long) */
1563 16, /* bitsize */
1564 FALSE, /* pc_relative */
1565 0, /* bitpos */
1566 complain_overflow_dont, /* complain_on_overflow */
1567 ppc_elf_unhandled_reloc, /* special_function */
1568 "R_PPC_VLE_SDA21_LO", /* name */
1569 FALSE, /* partial_inplace */
1570 0, /* src_mask */
1571 0xffff, /* dst_mask */
1572 FALSE), /* pcrel_offset */
1573
1574 /* The 16 LSBS relative to _SDA_BASE_ in split16a format. */
1575 HOWTO (R_PPC_VLE_SDAREL_LO16A,/* type */
1576 0, /* rightshift */
1577 2, /* size (0 = byte, 1 = short, 2 = long) */
1578 16, /* bitsize */
1579 FALSE, /* pc_relative */
1580 0, /* bitpos */
1581 complain_overflow_dont, /* complain_on_overflow */
1582 ppc_elf_unhandled_reloc, /* special_function */
1583 "R_PPC_VLE_SDAREL_LO16A", /* name */
1584 FALSE, /* partial_inplace */
1585 0, /* src_mask */
1586 0x1f07ff, /* dst_mask */
1587 FALSE), /* pcrel_offset */
1588
1589 /* The 16 LSBS relative to _SDA_BASE_ in split16d format. */
1590 HOWTO (R_PPC_VLE_SDAREL_LO16D, /* type */
1591 0, /* rightshift */
1592 2, /* size (0 = byte, 1 = short, 2 = long) */
1593 16, /* bitsize */
1594 FALSE, /* pc_relative */
1595 0, /* bitpos */
1596 complain_overflow_dont, /* complain_on_overflow */
1597 ppc_elf_unhandled_reloc, /* special_function */
1598 "R_PPC_VLE_SDAREL_LO16D", /* name */
1599 FALSE, /* partial_inplace */
1600 0, /* src_mask */
1601 0x3e007ff, /* dst_mask */
1602 FALSE), /* pcrel_offset */
1603
1604 /* Bits 16-31 relative to _SDA_BASE_ in split16a format. */
1605 HOWTO (R_PPC_VLE_SDAREL_HI16A, /* type */
1606 16, /* rightshift */
1607 2, /* size (0 = byte, 1 = short, 2 = long) */
1608 16, /* bitsize */
1609 FALSE, /* pc_relative */
1610 0, /* bitpos */
1611 complain_overflow_dont, /* complain_on_overflow */
1612 ppc_elf_unhandled_reloc, /* special_function */
1613 "R_PPC_VLE_SDAREL_HI16A", /* name */
1614 FALSE, /* partial_inplace */
1615 0, /* src_mask */
1616 0x1f07ff, /* dst_mask */
1617 FALSE), /* pcrel_offset */
1618
1619 /* Bits 16-31 relative to _SDA_BASE_ in split16d format. */
1620 HOWTO (R_PPC_VLE_SDAREL_HI16D, /* type */
1621 16, /* rightshift */
1622 2, /* size (0 = byte, 1 = short, 2 = long) */
1623 16, /* bitsize */
1624 FALSE, /* pc_relative */
1625 0, /* bitpos */
1626 complain_overflow_dont, /* complain_on_overflow */
1627 ppc_elf_unhandled_reloc, /* special_function */
1628 "R_PPC_VLE_SDAREL_HI16D", /* name */
1629 FALSE, /* partial_inplace */
1630 0, /* src_mask */
1631 0x3e007ff, /* dst_mask */
1632 FALSE), /* pcrel_offset */
1633
1634 /* Bits 16-31 (HA) relative to _SDA_BASE split16a format. */
1635 HOWTO (R_PPC_VLE_SDAREL_HA16A, /* type */
1636 16, /* rightshift */
1637 2, /* size (0 = byte, 1 = short, 2 = long) */
1638 16, /* bitsize */
1639 FALSE, /* pc_relative */
1640 0, /* bitpos */
1641 complain_overflow_dont, /* complain_on_overflow */
1642 ppc_elf_unhandled_reloc, /* special_function */
1643 "R_PPC_VLE_SDAREL_HA16A", /* name */
1644 FALSE, /* partial_inplace */
1645 0, /* src_mask */
1646 0x1f07ff, /* dst_mask */
1647 FALSE), /* pcrel_offset */
1648
1649 /* Bits 16-31 (HA) relative to _SDA_BASE split16d format. */
1650 HOWTO (R_PPC_VLE_SDAREL_HA16D, /* type */
1651 16, /* rightshift */
1652 2, /* size (0 = byte, 1 = short, 2 = long) */
1653 16, /* bitsize */
1654 FALSE, /* pc_relative */
1655 0, /* bitpos */
1656 complain_overflow_dont, /* complain_on_overflow */
1657 ppc_elf_unhandled_reloc, /* special_function */
1658 "R_PPC_VLE_SDAREL_HA16D", /* name */
1659 FALSE, /* partial_inplace */
1660 0, /* src_mask */
1661 0x3e007ff, /* dst_mask */
1662 FALSE), /* pcrel_offset */
1663
1664 /* e_li split20 format. */
1665 HOWTO (R_PPC_VLE_ADDR20, /* type */
1666 16, /* rightshift */
1667 2, /* size (0 = byte, 1 = short, 2 = long) */
1668 20, /* bitsize */
1669 FALSE, /* pc_relative */
1670 0, /* bitpos */
1671 complain_overflow_dont, /* complain_on_overflow */
1672 bfd_elf_generic_reloc, /* special_function */
1673 "R_PPC_VLE_ADDR20", /* name */
1674 FALSE, /* partial_inplace */
1675 0, /* src_mask */
1676 0x1f07ff, /* dst_mask */
1677 FALSE), /* pcrel_offset */
1678
1679 HOWTO (R_PPC_IRELATIVE, /* type */
1680 0, /* rightshift */
1681 2, /* size (0 = byte, 1 = short, 2 = long) */
1682 32, /* bitsize */
1683 FALSE, /* pc_relative */
1684 0, /* bitpos */
1685 complain_overflow_dont, /* complain_on_overflow */
1686 ppc_elf_unhandled_reloc, /* special_function */
1687 "R_PPC_IRELATIVE", /* name */
1688 FALSE, /* partial_inplace */
1689 0, /* src_mask */
1690 0xffffffff, /* dst_mask */
1691 FALSE), /* pcrel_offset */
1692
1693 /* A 16 bit relative relocation. */
1694 HOWTO (R_PPC_REL16, /* type */
1695 0, /* rightshift */
1696 1, /* size (0 = byte, 1 = short, 2 = long) */
1697 16, /* bitsize */
1698 TRUE, /* pc_relative */
1699 0, /* bitpos */
1700 complain_overflow_signed, /* complain_on_overflow */
1701 bfd_elf_generic_reloc, /* special_function */
1702 "R_PPC_REL16", /* name */
1703 FALSE, /* partial_inplace */
1704 0, /* src_mask */
1705 0xffff, /* dst_mask */
1706 TRUE), /* pcrel_offset */
1707
1708 /* A 16 bit relative relocation without overflow. */
1709 HOWTO (R_PPC_REL16_LO, /* type */
1710 0, /* rightshift */
1711 1, /* size (0 = byte, 1 = short, 2 = long) */
1712 16, /* bitsize */
1713 TRUE, /* pc_relative */
1714 0, /* bitpos */
1715 complain_overflow_dont,/* complain_on_overflow */
1716 bfd_elf_generic_reloc, /* special_function */
1717 "R_PPC_REL16_LO", /* name */
1718 FALSE, /* partial_inplace */
1719 0, /* src_mask */
1720 0xffff, /* dst_mask */
1721 TRUE), /* pcrel_offset */
1722
1723 /* The high order 16 bits of a relative address. */
1724 HOWTO (R_PPC_REL16_HI, /* type */
1725 16, /* rightshift */
1726 1, /* size (0 = byte, 1 = short, 2 = long) */
1727 16, /* bitsize */
1728 TRUE, /* pc_relative */
1729 0, /* bitpos */
1730 complain_overflow_dont, /* complain_on_overflow */
1731 bfd_elf_generic_reloc, /* special_function */
1732 "R_PPC_REL16_HI", /* name */
1733 FALSE, /* partial_inplace */
1734 0, /* src_mask */
1735 0xffff, /* dst_mask */
1736 TRUE), /* pcrel_offset */
1737
1738 /* The high order 16 bits of a relative address, plus 1 if the contents of
1739 the low 16 bits, treated as a signed number, is negative. */
1740 HOWTO (R_PPC_REL16_HA, /* type */
1741 16, /* rightshift */
1742 1, /* size (0 = byte, 1 = short, 2 = long) */
1743 16, /* bitsize */
1744 TRUE, /* pc_relative */
1745 0, /* bitpos */
1746 complain_overflow_dont, /* complain_on_overflow */
1747 ppc_elf_addr16_ha_reloc, /* special_function */
1748 "R_PPC_REL16_HA", /* name */
1749 FALSE, /* partial_inplace */
1750 0, /* src_mask */
1751 0xffff, /* dst_mask */
1752 TRUE), /* pcrel_offset */
1753
1754 /* Like R_PPC_REL16_HA but for split field in addpcis. */
1755 HOWTO (R_PPC_REL16DX_HA, /* type */
1756 16, /* rightshift */
1757 2, /* size (0 = byte, 1 = short, 2 = long) */
1758 16, /* bitsize */
1759 TRUE, /* pc_relative */
1760 0, /* bitpos */
1761 complain_overflow_signed, /* complain_on_overflow */
1762 ppc_elf_addr16_ha_reloc, /* special_function */
1763 "R_PPC_REL16DX_HA", /* name */
1764 FALSE, /* partial_inplace */
1765 0, /* src_mask */
1766 0x1fffc1, /* dst_mask */
1767 TRUE), /* pcrel_offset */
1768
1769 /* A split-field reloc for addpcis, non-relative (gas internal use only). */
1770 HOWTO (R_PPC_16DX_HA, /* type */
1771 16, /* rightshift */
1772 2, /* size (0 = byte, 1 = short, 2 = long) */
1773 16, /* bitsize */
1774 FALSE, /* pc_relative */
1775 0, /* bitpos */
1776 complain_overflow_signed, /* complain_on_overflow */
1777 ppc_elf_addr16_ha_reloc, /* special_function */
1778 "R_PPC_16DX_HA", /* name */
1779 FALSE, /* partial_inplace */
1780 0, /* src_mask */
1781 0x1fffc1, /* dst_mask */
1782 FALSE), /* pcrel_offset */
1783
1784 /* GNU extension to record C++ vtable hierarchy. */
1785 HOWTO (R_PPC_GNU_VTINHERIT, /* type */
1786 0, /* rightshift */
1787 0, /* size (0 = byte, 1 = short, 2 = long) */
1788 0, /* bitsize */
1789 FALSE, /* pc_relative */
1790 0, /* bitpos */
1791 complain_overflow_dont, /* complain_on_overflow */
1792 NULL, /* special_function */
1793 "R_PPC_GNU_VTINHERIT", /* name */
1794 FALSE, /* partial_inplace */
1795 0, /* src_mask */
1796 0, /* dst_mask */
1797 FALSE), /* pcrel_offset */
1798
1799 /* GNU extension to record C++ vtable member usage. */
1800 HOWTO (R_PPC_GNU_VTENTRY, /* type */
1801 0, /* rightshift */
1802 0, /* size (0 = byte, 1 = short, 2 = long) */
1803 0, /* bitsize */
1804 FALSE, /* pc_relative */
1805 0, /* bitpos */
1806 complain_overflow_dont, /* complain_on_overflow */
1807 NULL, /* special_function */
1808 "R_PPC_GNU_VTENTRY", /* name */
1809 FALSE, /* partial_inplace */
1810 0, /* src_mask */
1811 0, /* dst_mask */
1812 FALSE), /* pcrel_offset */
1813
1814 /* Phony reloc to handle AIX style TOC entries. */
1815 HOWTO (R_PPC_TOC16, /* type */
1816 0, /* rightshift */
1817 1, /* size (0 = byte, 1 = short, 2 = long) */
1818 16, /* bitsize */
1819 FALSE, /* pc_relative */
1820 0, /* bitpos */
1821 complain_overflow_signed, /* complain_on_overflow */
1822 ppc_elf_unhandled_reloc, /* special_function */
1823 "R_PPC_TOC16", /* name */
1824 FALSE, /* partial_inplace */
1825 0, /* src_mask */
1826 0xffff, /* dst_mask */
1827 FALSE), /* pcrel_offset */
1828 };
1829 \f
1830 /* Initialize the ppc_elf_howto_table, so that linear accesses can be done. */
1831
1832 static void
1833 ppc_elf_howto_init (void)
1834 {
1835 unsigned int i, type;
1836
1837 for (i = 0;
1838 i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]);
1839 i++)
1840 {
1841 type = ppc_elf_howto_raw[i].type;
1842 if (type >= (sizeof (ppc_elf_howto_table)
1843 / sizeof (ppc_elf_howto_table[0])))
1844 abort ();
1845 ppc_elf_howto_table[type] = &ppc_elf_howto_raw[i];
1846 }
1847 }
1848
1849 static reloc_howto_type *
1850 ppc_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1851 bfd_reloc_code_real_type code)
1852 {
1853 enum elf_ppc_reloc_type r;
1854
1855 /* Initialize howto table if not already done. */
1856 if (!ppc_elf_howto_table[R_PPC_ADDR32])
1857 ppc_elf_howto_init ();
1858
1859 switch (code)
1860 {
1861 default:
1862 return NULL;
1863
1864 case BFD_RELOC_NONE: r = R_PPC_NONE; break;
1865 case BFD_RELOC_32: r = R_PPC_ADDR32; break;
1866 case BFD_RELOC_PPC_BA26: r = R_PPC_ADDR24; break;
1867 case BFD_RELOC_PPC64_ADDR16_DS:
1868 case BFD_RELOC_16: r = R_PPC_ADDR16; break;
1869 case BFD_RELOC_PPC64_ADDR16_LO_DS:
1870 case BFD_RELOC_LO16: r = R_PPC_ADDR16_LO; break;
1871 case BFD_RELOC_HI16: r = R_PPC_ADDR16_HI; break;
1872 case BFD_RELOC_HI16_S: r = R_PPC_ADDR16_HA; break;
1873 case BFD_RELOC_PPC_BA16: r = R_PPC_ADDR14; break;
1874 case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC_ADDR14_BRTAKEN; break;
1875 case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC_ADDR14_BRNTAKEN; break;
1876 case BFD_RELOC_PPC_B26: r = R_PPC_REL24; break;
1877 case BFD_RELOC_PPC_B16: r = R_PPC_REL14; break;
1878 case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC_REL14_BRTAKEN; break;
1879 case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC_REL14_BRNTAKEN; break;
1880 case BFD_RELOC_PPC64_GOT16_DS:
1881 case BFD_RELOC_16_GOTOFF: r = R_PPC_GOT16; break;
1882 case BFD_RELOC_PPC64_GOT16_LO_DS:
1883 case BFD_RELOC_LO16_GOTOFF: r = R_PPC_GOT16_LO; break;
1884 case BFD_RELOC_HI16_GOTOFF: r = R_PPC_GOT16_HI; break;
1885 case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC_GOT16_HA; break;
1886 case BFD_RELOC_24_PLT_PCREL: r = R_PPC_PLTREL24; break;
1887 case BFD_RELOC_PPC_COPY: r = R_PPC_COPY; break;
1888 case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC_GLOB_DAT; break;
1889 case BFD_RELOC_PPC_LOCAL24PC: r = R_PPC_LOCAL24PC; break;
1890 case BFD_RELOC_32_PCREL: r = R_PPC_REL32; break;
1891 case BFD_RELOC_32_PLTOFF: r = R_PPC_PLT32; break;
1892 case BFD_RELOC_32_PLT_PCREL: r = R_PPC_PLTREL32; break;
1893 case BFD_RELOC_PPC64_PLT16_LO_DS:
1894 case BFD_RELOC_LO16_PLTOFF: r = R_PPC_PLT16_LO; break;
1895 case BFD_RELOC_HI16_PLTOFF: r = R_PPC_PLT16_HI; break;
1896 case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC_PLT16_HA; break;
1897 case BFD_RELOC_GPREL16: r = R_PPC_SDAREL16; break;
1898 case BFD_RELOC_PPC64_SECTOFF_DS:
1899 case BFD_RELOC_16_BASEREL: r = R_PPC_SECTOFF; break;
1900 case BFD_RELOC_PPC64_SECTOFF_LO_DS:
1901 case BFD_RELOC_LO16_BASEREL: r = R_PPC_SECTOFF_LO; break;
1902 case BFD_RELOC_HI16_BASEREL: r = R_PPC_SECTOFF_HI; break;
1903 case BFD_RELOC_HI16_S_BASEREL: r = R_PPC_SECTOFF_HA; break;
1904 case BFD_RELOC_CTOR: r = R_PPC_ADDR32; break;
1905 case BFD_RELOC_PPC64_TOC16_DS:
1906 case BFD_RELOC_PPC_TOC16: r = R_PPC_TOC16; break;
1907 case BFD_RELOC_PPC_TLS: r = R_PPC_TLS; break;
1908 case BFD_RELOC_PPC_TLSGD: r = R_PPC_TLSGD; break;
1909 case BFD_RELOC_PPC_TLSLD: r = R_PPC_TLSLD; break;
1910 case BFD_RELOC_PPC_DTPMOD: r = R_PPC_DTPMOD32; break;
1911 case BFD_RELOC_PPC64_TPREL16_DS:
1912 case BFD_RELOC_PPC_TPREL16: r = R_PPC_TPREL16; break;
1913 case BFD_RELOC_PPC64_TPREL16_LO_DS:
1914 case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC_TPREL16_LO; break;
1915 case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC_TPREL16_HI; break;
1916 case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC_TPREL16_HA; break;
1917 case BFD_RELOC_PPC_TPREL: r = R_PPC_TPREL32; break;
1918 case BFD_RELOC_PPC64_DTPREL16_DS:
1919 case BFD_RELOC_PPC_DTPREL16: r = R_PPC_DTPREL16; break;
1920 case BFD_RELOC_PPC64_DTPREL16_LO_DS:
1921 case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC_DTPREL16_LO; break;
1922 case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC_DTPREL16_HI; break;
1923 case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC_DTPREL16_HA; break;
1924 case BFD_RELOC_PPC_DTPREL: r = R_PPC_DTPREL32; break;
1925 case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC_GOT_TLSGD16; break;
1926 case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC_GOT_TLSGD16_LO; break;
1927 case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC_GOT_TLSGD16_HI; break;
1928 case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC_GOT_TLSGD16_HA; break;
1929 case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC_GOT_TLSLD16; break;
1930 case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC_GOT_TLSLD16_LO; break;
1931 case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC_GOT_TLSLD16_HI; break;
1932 case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC_GOT_TLSLD16_HA; break;
1933 case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC_GOT_TPREL16; break;
1934 case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC_GOT_TPREL16_LO; break;
1935 case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC_GOT_TPREL16_HI; break;
1936 case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC_GOT_TPREL16_HA; break;
1937 case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC_GOT_DTPREL16; break;
1938 case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC_GOT_DTPREL16_LO; break;
1939 case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC_GOT_DTPREL16_HI; break;
1940 case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC_GOT_DTPREL16_HA; break;
1941 case BFD_RELOC_PPC_EMB_NADDR32: r = R_PPC_EMB_NADDR32; break;
1942 case BFD_RELOC_PPC_EMB_NADDR16: r = R_PPC_EMB_NADDR16; break;
1943 case BFD_RELOC_PPC_EMB_NADDR16_LO: r = R_PPC_EMB_NADDR16_LO; break;
1944 case BFD_RELOC_PPC_EMB_NADDR16_HI: r = R_PPC_EMB_NADDR16_HI; break;
1945 case BFD_RELOC_PPC_EMB_NADDR16_HA: r = R_PPC_EMB_NADDR16_HA; break;
1946 case BFD_RELOC_PPC_EMB_SDAI16: r = R_PPC_EMB_SDAI16; break;
1947 case BFD_RELOC_PPC_EMB_SDA2I16: r = R_PPC_EMB_SDA2I16; break;
1948 case BFD_RELOC_PPC_EMB_SDA2REL: r = R_PPC_EMB_SDA2REL; break;
1949 case BFD_RELOC_PPC_EMB_SDA21: r = R_PPC_EMB_SDA21; break;
1950 case BFD_RELOC_PPC_EMB_MRKREF: r = R_PPC_EMB_MRKREF; break;
1951 case BFD_RELOC_PPC_EMB_RELSEC16: r = R_PPC_EMB_RELSEC16; break;
1952 case BFD_RELOC_PPC_EMB_RELST_LO: r = R_PPC_EMB_RELST_LO; break;
1953 case BFD_RELOC_PPC_EMB_RELST_HI: r = R_PPC_EMB_RELST_HI; break;
1954 case BFD_RELOC_PPC_EMB_RELST_HA: r = R_PPC_EMB_RELST_HA; break;
1955 case BFD_RELOC_PPC_EMB_BIT_FLD: r = R_PPC_EMB_BIT_FLD; break;
1956 case BFD_RELOC_PPC_EMB_RELSDA: r = R_PPC_EMB_RELSDA; break;
1957 case BFD_RELOC_PPC_VLE_REL8: r = R_PPC_VLE_REL8; break;
1958 case BFD_RELOC_PPC_VLE_REL15: r = R_PPC_VLE_REL15; break;
1959 case BFD_RELOC_PPC_VLE_REL24: r = R_PPC_VLE_REL24; break;
1960 case BFD_RELOC_PPC_VLE_LO16A: r = R_PPC_VLE_LO16A; break;
1961 case BFD_RELOC_PPC_VLE_LO16D: r = R_PPC_VLE_LO16D; break;
1962 case BFD_RELOC_PPC_VLE_HI16A: r = R_PPC_VLE_HI16A; break;
1963 case BFD_RELOC_PPC_VLE_HI16D: r = R_PPC_VLE_HI16D; break;
1964 case BFD_RELOC_PPC_VLE_HA16A: r = R_PPC_VLE_HA16A; break;
1965 case BFD_RELOC_PPC_VLE_HA16D: r = R_PPC_VLE_HA16D; break;
1966 case BFD_RELOC_PPC_VLE_SDA21: r = R_PPC_VLE_SDA21; break;
1967 case BFD_RELOC_PPC_VLE_SDA21_LO: r = R_PPC_VLE_SDA21_LO; break;
1968 case BFD_RELOC_PPC_VLE_SDAREL_LO16A:
1969 r = R_PPC_VLE_SDAREL_LO16A;
1970 break;
1971 case BFD_RELOC_PPC_VLE_SDAREL_LO16D:
1972 r = R_PPC_VLE_SDAREL_LO16D;
1973 break;
1974 case BFD_RELOC_PPC_VLE_SDAREL_HI16A:
1975 r = R_PPC_VLE_SDAREL_HI16A;
1976 break;
1977 case BFD_RELOC_PPC_VLE_SDAREL_HI16D:
1978 r = R_PPC_VLE_SDAREL_HI16D;
1979 break;
1980 case BFD_RELOC_PPC_VLE_SDAREL_HA16A:
1981 r = R_PPC_VLE_SDAREL_HA16A;
1982 break;
1983 case BFD_RELOC_PPC_VLE_SDAREL_HA16D:
1984 r = R_PPC_VLE_SDAREL_HA16D;
1985 break;
1986 case BFD_RELOC_16_PCREL: r = R_PPC_REL16; break;
1987 case BFD_RELOC_LO16_PCREL: r = R_PPC_REL16_LO; break;
1988 case BFD_RELOC_HI16_PCREL: r = R_PPC_REL16_HI; break;
1989 case BFD_RELOC_HI16_S_PCREL: r = R_PPC_REL16_HA; break;
1990 case BFD_RELOC_PPC_16DX_HA: r = R_PPC_16DX_HA; break;
1991 case BFD_RELOC_PPC_REL16DX_HA: r = R_PPC_REL16DX_HA; break;
1992 case BFD_RELOC_VTABLE_INHERIT: r = R_PPC_GNU_VTINHERIT; break;
1993 case BFD_RELOC_VTABLE_ENTRY: r = R_PPC_GNU_VTENTRY; break;
1994 }
1995
1996 return ppc_elf_howto_table[r];
1997 };
1998
1999 static reloc_howto_type *
2000 ppc_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
2001 const char *r_name)
2002 {
2003 unsigned int i;
2004
2005 for (i = 0;
2006 i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]);
2007 i++)
2008 if (ppc_elf_howto_raw[i].name != NULL
2009 && strcasecmp (ppc_elf_howto_raw[i].name, r_name) == 0)
2010 return &ppc_elf_howto_raw[i];
2011
2012 return NULL;
2013 }
2014
2015 /* Set the howto pointer for a PowerPC ELF reloc. */
2016
2017 static bfd_boolean
2018 ppc_elf_info_to_howto (bfd *abfd,
2019 arelent *cache_ptr,
2020 Elf_Internal_Rela *dst)
2021 {
2022 unsigned int r_type;
2023
2024 /* Initialize howto table if not already done. */
2025 if (!ppc_elf_howto_table[R_PPC_ADDR32])
2026 ppc_elf_howto_init ();
2027
2028 r_type = ELF32_R_TYPE (dst->r_info);
2029 if (r_type >= R_PPC_max)
2030 {
2031 /* xgettext:c-format */
2032 _bfd_error_handler (_("%pB: unsupported relocation type %#x"),
2033 abfd, r_type);
2034 bfd_set_error (bfd_error_bad_value);
2035 return FALSE;
2036 }
2037
2038 cache_ptr->howto = ppc_elf_howto_table[r_type];
2039
2040 /* Just because the above assert didn't trigger doesn't mean that
2041 ELF32_R_TYPE (dst->r_info) is necessarily a valid relocation. */
2042 if (cache_ptr->howto == NULL)
2043 {
2044 /* xgettext:c-format */
2045 _bfd_error_handler (_("%pB: unsupported relocation type %#x"),
2046 abfd, r_type);
2047 bfd_set_error (bfd_error_bad_value);
2048
2049 return FALSE;
2050 }
2051
2052 return TRUE;
2053 }
2054
2055 /* Handle the R_PPC_ADDR16_HA and R_PPC_REL16_HA relocs. */
2056
2057 static bfd_reloc_status_type
2058 ppc_elf_addr16_ha_reloc (bfd *abfd,
2059 arelent *reloc_entry,
2060 asymbol *symbol,
2061 void *data,
2062 asection *input_section,
2063 bfd *output_bfd,
2064 char **error_message ATTRIBUTE_UNUSED)
2065 {
2066 enum elf_ppc_reloc_type r_type;
2067 long insn;
2068 bfd_size_type octets;
2069 bfd_vma value;
2070
2071 if (output_bfd != NULL)
2072 {
2073 reloc_entry->address += input_section->output_offset;
2074 return bfd_reloc_ok;
2075 }
2076
2077 reloc_entry->addend += 0x8000;
2078 r_type = reloc_entry->howto->type;
2079 if (r_type != R_PPC_REL16DX_HA)
2080 return bfd_reloc_continue;
2081
2082 value = 0;
2083 if (!bfd_is_com_section (symbol->section))
2084 value = symbol->value;
2085 value += (reloc_entry->addend
2086 + symbol->section->output_offset
2087 + symbol->section->output_section->vma);
2088 value -= (reloc_entry->address
2089 + input_section->output_offset
2090 + input_section->output_section->vma);
2091 value >>= 16;
2092
2093 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
2094 insn = bfd_get_32 (abfd, (bfd_byte *) data + octets);
2095 insn &= ~0x1fffc1;
2096 insn |= (value & 0xffc1) | ((value & 0x3e) << 15);
2097 bfd_put_32 (abfd, insn, (bfd_byte *) data + octets);
2098 return bfd_reloc_ok;
2099 }
2100
2101 static bfd_reloc_status_type
2102 ppc_elf_unhandled_reloc (bfd *abfd,
2103 arelent *reloc_entry,
2104 asymbol *symbol,
2105 void *data,
2106 asection *input_section,
2107 bfd *output_bfd,
2108 char **error_message)
2109 {
2110 /* If this is a relocatable link (output_bfd test tells us), just
2111 call the generic function. Any adjustment will be done at final
2112 link time. */
2113 if (output_bfd != NULL)
2114 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2115 input_section, output_bfd, error_message);
2116
2117 if (error_message != NULL)
2118 {
2119 static char buf[60];
2120 sprintf (buf, _("generic linker can't handle %s"),
2121 reloc_entry->howto->name);
2122 *error_message = buf;
2123 }
2124 return bfd_reloc_dangerous;
2125 }
2126 \f
2127 /* Sections created by the linker. */
2128
2129 typedef struct elf_linker_section
2130 {
2131 /* Pointer to the bfd section. */
2132 asection *section;
2133 /* Section name. */
2134 const char *name;
2135 /* Associated bss section name. */
2136 const char *bss_name;
2137 /* Associated symbol name. */
2138 const char *sym_name;
2139 /* Associated symbol. */
2140 struct elf_link_hash_entry *sym;
2141 } elf_linker_section_t;
2142
2143 /* Linked list of allocated pointer entries. This hangs off of the
2144 symbol lists, and provides allows us to return different pointers,
2145 based on different addend's. */
2146
2147 typedef struct elf_linker_section_pointers
2148 {
2149 /* next allocated pointer for this symbol */
2150 struct elf_linker_section_pointers *next;
2151 /* offset of pointer from beginning of section */
2152 bfd_vma offset;
2153 /* addend used */
2154 bfd_vma addend;
2155 /* which linker section this is */
2156 elf_linker_section_t *lsect;
2157 } elf_linker_section_pointers_t;
2158
2159 struct ppc_elf_obj_tdata
2160 {
2161 struct elf_obj_tdata elf;
2162
2163 /* A mapping from local symbols to offsets into the various linker
2164 sections added. This is index by the symbol index. */
2165 elf_linker_section_pointers_t **linker_section_pointers;
2166
2167 /* Flags used to auto-detect plt type. */
2168 unsigned int makes_plt_call : 1;
2169 unsigned int has_rel16 : 1;
2170 };
2171
2172 #define ppc_elf_tdata(bfd) \
2173 ((struct ppc_elf_obj_tdata *) (bfd)->tdata.any)
2174
2175 #define elf_local_ptr_offsets(bfd) \
2176 (ppc_elf_tdata (bfd)->linker_section_pointers)
2177
2178 #define is_ppc_elf(bfd) \
2179 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
2180 && elf_object_id (bfd) == PPC32_ELF_DATA)
2181
2182 /* Override the generic function because we store some extras. */
2183
2184 static bfd_boolean
2185 ppc_elf_mkobject (bfd *abfd)
2186 {
2187 return bfd_elf_allocate_object (abfd, sizeof (struct ppc_elf_obj_tdata),
2188 PPC32_ELF_DATA);
2189 }
2190
2191 /* When defaulting arch/mach, decode apuinfo to find a better match. */
2192
2193 bfd_boolean
2194 _bfd_elf_ppc_set_arch (bfd *abfd)
2195 {
2196 unsigned long mach = 0;
2197 asection *s;
2198 unsigned char *contents;
2199
2200 if (abfd->arch_info->bits_per_word == 32
2201 && bfd_big_endian (abfd))
2202 {
2203
2204 for (s = abfd->sections; s != NULL; s = s->next)
2205 if ((elf_section_data (s)->this_hdr.sh_flags & SHF_PPC_VLE) != 0)
2206 break;
2207 if (s != NULL)
2208 mach = bfd_mach_ppc_vle;
2209 }
2210
2211 if (mach == 0)
2212 {
2213 s = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2214 if (s != NULL && bfd_malloc_and_get_section (abfd, s, &contents))
2215 {
2216 unsigned int apuinfo_size = bfd_get_32 (abfd, contents + 4);
2217 unsigned int i;
2218
2219 for (i = 20; i < apuinfo_size + 20 && i + 4 <= s->size; i += 4)
2220 {
2221 unsigned int val = bfd_get_32 (abfd, contents + i);
2222 switch (val >> 16)
2223 {
2224 case PPC_APUINFO_PMR:
2225 case PPC_APUINFO_RFMCI:
2226 if (mach == 0)
2227 mach = bfd_mach_ppc_titan;
2228 break;
2229
2230 case PPC_APUINFO_ISEL:
2231 case PPC_APUINFO_CACHELCK:
2232 if (mach == bfd_mach_ppc_titan)
2233 mach = bfd_mach_ppc_e500mc;
2234 break;
2235
2236 case PPC_APUINFO_SPE:
2237 case PPC_APUINFO_EFS:
2238 case PPC_APUINFO_BRLOCK:
2239 if (mach != bfd_mach_ppc_vle)
2240 mach = bfd_mach_ppc_e500;
2241 break;
2242
2243 case PPC_APUINFO_VLE:
2244 mach = bfd_mach_ppc_vle;
2245 break;
2246
2247 default:
2248 mach = -1ul;
2249 }
2250 }
2251 free (contents);
2252 }
2253 }
2254
2255 if (mach != 0 && mach != -1ul)
2256 {
2257 const bfd_arch_info_type *arch;
2258
2259 for (arch = abfd->arch_info->next; arch; arch = arch->next)
2260 if (arch->mach == mach)
2261 {
2262 abfd->arch_info = arch;
2263 break;
2264 }
2265 }
2266 return TRUE;
2267 }
2268
2269 /* Fix bad default arch selected for a 32 bit input bfd when the
2270 default is 64 bit. Also select arch based on apuinfo. */
2271
2272 static bfd_boolean
2273 ppc_elf_object_p (bfd *abfd)
2274 {
2275 if (!abfd->arch_info->the_default)
2276 return TRUE;
2277
2278 if (abfd->arch_info->bits_per_word == 64)
2279 {
2280 Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd);
2281
2282 if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS32)
2283 {
2284 /* Relies on arch after 64 bit default being 32 bit default. */
2285 abfd->arch_info = abfd->arch_info->next;
2286 BFD_ASSERT (abfd->arch_info->bits_per_word == 32);
2287 }
2288 }
2289 return _bfd_elf_ppc_set_arch (abfd);
2290 }
2291
2292 /* Function to set whether a module needs the -mrelocatable bit set. */
2293
2294 static bfd_boolean
2295 ppc_elf_set_private_flags (bfd *abfd, flagword flags)
2296 {
2297 BFD_ASSERT (!elf_flags_init (abfd)
2298 || elf_elfheader (abfd)->e_flags == flags);
2299
2300 elf_elfheader (abfd)->e_flags = flags;
2301 elf_flags_init (abfd) = TRUE;
2302 return TRUE;
2303 }
2304
2305 /* Support for core dump NOTE sections. */
2306
2307 static bfd_boolean
2308 ppc_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
2309 {
2310 int offset;
2311 unsigned int size;
2312
2313 switch (note->descsz)
2314 {
2315 default:
2316 return FALSE;
2317
2318 case 268: /* Linux/PPC. */
2319 /* pr_cursig */
2320 elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12);
2321
2322 /* pr_pid */
2323 elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 24);
2324
2325 /* pr_reg */
2326 offset = 72;
2327 size = 192;
2328
2329 break;
2330 }
2331
2332 /* Make a ".reg/999" section. */
2333 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
2334 size, note->descpos + offset);
2335 }
2336
2337 static bfd_boolean
2338 ppc_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
2339 {
2340 switch (note->descsz)
2341 {
2342 default:
2343 return FALSE;
2344
2345 case 128: /* Linux/PPC elf_prpsinfo. */
2346 elf_tdata (abfd)->core->pid
2347 = bfd_get_32 (abfd, note->descdata + 16);
2348 elf_tdata (abfd)->core->program
2349 = _bfd_elfcore_strndup (abfd, note->descdata + 32, 16);
2350 elf_tdata (abfd)->core->command
2351 = _bfd_elfcore_strndup (abfd, note->descdata + 48, 80);
2352 }
2353
2354 /* Note that for some reason, a spurious space is tacked
2355 onto the end of the args in some (at least one anyway)
2356 implementations, so strip it off if it exists. */
2357
2358 {
2359 char *command = elf_tdata (abfd)->core->command;
2360 int n = strlen (command);
2361
2362 if (0 < n && command[n - 1] == ' ')
2363 command[n - 1] = '\0';
2364 }
2365
2366 return TRUE;
2367 }
2368
2369 static char *
2370 ppc_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type, ...)
2371 {
2372 switch (note_type)
2373 {
2374 default:
2375 return NULL;
2376
2377 case NT_PRPSINFO:
2378 {
2379 char data[128];
2380 va_list ap;
2381
2382 va_start (ap, note_type);
2383 memset (data, 0, sizeof (data));
2384 strncpy (data + 32, va_arg (ap, const char *), 16);
2385 strncpy (data + 48, va_arg (ap, const char *), 80);
2386 va_end (ap);
2387 return elfcore_write_note (abfd, buf, bufsiz,
2388 "CORE", note_type, data, sizeof (data));
2389 }
2390
2391 case NT_PRSTATUS:
2392 {
2393 char data[268];
2394 va_list ap;
2395 long pid;
2396 int cursig;
2397 const void *greg;
2398
2399 va_start (ap, note_type);
2400 memset (data, 0, 72);
2401 pid = va_arg (ap, long);
2402 bfd_put_32 (abfd, pid, data + 24);
2403 cursig = va_arg (ap, int);
2404 bfd_put_16 (abfd, cursig, data + 12);
2405 greg = va_arg (ap, const void *);
2406 memcpy (data + 72, greg, 192);
2407 memset (data + 264, 0, 4);
2408 va_end (ap);
2409 return elfcore_write_note (abfd, buf, bufsiz,
2410 "CORE", note_type, data, sizeof (data));
2411 }
2412 }
2413 }
2414
2415 static flagword
2416 ppc_elf_lookup_section_flags (char *flag_name)
2417 {
2418
2419 if (!strcmp (flag_name, "SHF_PPC_VLE"))
2420 return SHF_PPC_VLE;
2421
2422 return 0;
2423 }
2424
2425 /* Return address for Ith PLT stub in section PLT, for relocation REL
2426 or (bfd_vma) -1 if it should not be included. */
2427
2428 static bfd_vma
2429 ppc_elf_plt_sym_val (bfd_vma i ATTRIBUTE_UNUSED,
2430 const asection *plt ATTRIBUTE_UNUSED,
2431 const arelent *rel)
2432 {
2433 return rel->address;
2434 }
2435
2436 /* Handle a PowerPC specific section when reading an object file. This
2437 is called when bfd_section_from_shdr finds a section with an unknown
2438 type. */
2439
2440 static bfd_boolean
2441 ppc_elf_section_from_shdr (bfd *abfd,
2442 Elf_Internal_Shdr *hdr,
2443 const char *name,
2444 int shindex)
2445 {
2446 asection *newsect;
2447 flagword flags;
2448
2449 if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
2450 return FALSE;
2451
2452 newsect = hdr->bfd_section;
2453 flags = bfd_get_section_flags (abfd, newsect);
2454 if (hdr->sh_flags & SHF_EXCLUDE)
2455 flags |= SEC_EXCLUDE;
2456
2457 if (hdr->sh_type == SHT_ORDERED)
2458 flags |= SEC_SORT_ENTRIES;
2459
2460 bfd_set_section_flags (abfd, newsect, flags);
2461 return TRUE;
2462 }
2463
2464 /* Set up any other section flags and such that may be necessary. */
2465
2466 static bfd_boolean
2467 ppc_elf_fake_sections (bfd *abfd ATTRIBUTE_UNUSED,
2468 Elf_Internal_Shdr *shdr,
2469 asection *asect)
2470 {
2471 if ((asect->flags & SEC_SORT_ENTRIES) != 0)
2472 shdr->sh_type = SHT_ORDERED;
2473
2474 return TRUE;
2475 }
2476
2477 /* If we have .sbss2 or .PPC.EMB.sbss0 output sections, we
2478 need to bump up the number of section headers. */
2479
2480 static int
2481 ppc_elf_additional_program_headers (bfd *abfd,
2482 struct bfd_link_info *info ATTRIBUTE_UNUSED)
2483 {
2484 asection *s;
2485 int ret = 0;
2486
2487 s = bfd_get_section_by_name (abfd, ".sbss2");
2488 if (s != NULL && (s->flags & SEC_ALLOC) != 0)
2489 ++ret;
2490
2491 s = bfd_get_section_by_name (abfd, ".PPC.EMB.sbss0");
2492 if (s != NULL && (s->flags & SEC_ALLOC) != 0)
2493 ++ret;
2494
2495 return ret;
2496 }
2497
2498 /* Modify the segment map for VLE executables. */
2499
2500 bfd_boolean
2501 ppc_elf_modify_segment_map (bfd *abfd,
2502 struct bfd_link_info *info ATTRIBUTE_UNUSED)
2503 {
2504 struct elf_segment_map *m;
2505
2506 /* At this point in the link, output sections have already been sorted by
2507 LMA and assigned to segments. All that is left to do is to ensure
2508 there is no mixing of VLE & non-VLE sections in a text segment.
2509 If we find that case, we split the segment.
2510 We maintain the original output section order. */
2511
2512 for (m = elf_seg_map (abfd); m != NULL; m = m->next)
2513 {
2514 struct elf_segment_map *n;
2515 bfd_size_type amt;
2516 unsigned int j, k;
2517 unsigned int p_flags;
2518
2519 if (m->p_type != PT_LOAD || m->count == 0)
2520 continue;
2521
2522 for (p_flags = PF_R, j = 0; j != m->count; ++j)
2523 {
2524 if ((m->sections[j]->flags & SEC_READONLY) == 0)
2525 p_flags |= PF_W;
2526 if ((m->sections[j]->flags & SEC_CODE) != 0)
2527 {
2528 p_flags |= PF_X;
2529 if ((elf_section_flags (m->sections[j]) & SHF_PPC_VLE) != 0)
2530 p_flags |= PF_PPC_VLE;
2531 break;
2532 }
2533 }
2534 if (j != m->count)
2535 while (++j != m->count)
2536 {
2537 unsigned int p_flags1 = PF_R;
2538
2539 if ((m->sections[j]->flags & SEC_READONLY) == 0)
2540 p_flags1 |= PF_W;
2541 if ((m->sections[j]->flags & SEC_CODE) != 0)
2542 {
2543 p_flags1 |= PF_X;
2544 if ((elf_section_flags (m->sections[j]) & SHF_PPC_VLE) != 0)
2545 p_flags1 |= PF_PPC_VLE;
2546 if (((p_flags1 ^ p_flags) & PF_PPC_VLE) != 0)
2547 break;
2548 }
2549 p_flags |= p_flags1;
2550 }
2551 /* If we're splitting a segment which originally contained rw
2552 sections then those sections might now only be in one of the
2553 two parts. So always set p_flags if splitting, even if we
2554 are being called for objcopy with p_flags_valid set. */
2555 if (j != m->count || !m->p_flags_valid)
2556 {
2557 m->p_flags_valid = 1;
2558 m->p_flags = p_flags;
2559 }
2560 if (j == m->count)
2561 continue;
2562
2563 /* Sections 0..j-1 stay in this (current) segment,
2564 the remainder are put in a new segment.
2565 The scan resumes with the new segment. */
2566
2567 amt = sizeof (struct elf_segment_map);
2568 amt += (m->count - j - 1) * sizeof (asection *);
2569 n = (struct elf_segment_map *) bfd_zalloc (abfd, amt);
2570 if (n == NULL)
2571 return FALSE;
2572
2573 n->p_type = PT_LOAD;
2574 n->count = m->count - j;
2575 for (k = 0; k < n->count; ++k)
2576 n->sections[k] = m->sections[j + k];
2577 m->count = j;
2578 m->p_size_valid = 0;
2579 n->next = m->next;
2580 m->next = n;
2581 }
2582
2583 return TRUE;
2584 }
2585
2586 /* Add extra PPC sections -- Note, for now, make .sbss2 and
2587 .PPC.EMB.sbss0 a normal section, and not a bss section so
2588 that the linker doesn't crater when trying to make more than
2589 2 sections. */
2590
2591 static const struct bfd_elf_special_section ppc_elf_special_sections[] =
2592 {
2593 { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, SHF_ALLOC + SHF_EXECINSTR },
2594 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2595 { STRING_COMMA_LEN (".sbss2"), -2, SHT_PROGBITS, SHF_ALLOC },
2596 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2597 { STRING_COMMA_LEN (".sdata2"), -2, SHT_PROGBITS, SHF_ALLOC },
2598 { STRING_COMMA_LEN (".tags"), 0, SHT_ORDERED, SHF_ALLOC },
2599 { STRING_COMMA_LEN (APUINFO_SECTION_NAME), 0, SHT_NOTE, 0 },
2600 { STRING_COMMA_LEN (".PPC.EMB.sbss0"), 0, SHT_PROGBITS, SHF_ALLOC },
2601 { STRING_COMMA_LEN (".PPC.EMB.sdata0"), 0, SHT_PROGBITS, SHF_ALLOC },
2602 { NULL, 0, 0, 0, 0 }
2603 };
2604
2605 /* This is what we want for new plt/got. */
2606 static struct bfd_elf_special_section ppc_alt_plt =
2607 { STRING_COMMA_LEN (".plt"), 0, SHT_PROGBITS, SHF_ALLOC };
2608
2609 static const struct bfd_elf_special_section *
2610 ppc_elf_get_sec_type_attr (bfd *abfd, asection *sec)
2611 {
2612 const struct bfd_elf_special_section *ssect;
2613
2614 /* See if this is one of the special sections. */
2615 if (sec->name == NULL)
2616 return NULL;
2617
2618 ssect = _bfd_elf_get_special_section (sec->name, ppc_elf_special_sections,
2619 sec->use_rela_p);
2620 if (ssect != NULL)
2621 {
2622 if (ssect == ppc_elf_special_sections && (sec->flags & SEC_LOAD) != 0)
2623 ssect = &ppc_alt_plt;
2624 return ssect;
2625 }
2626
2627 return _bfd_elf_get_sec_type_attr (abfd, sec);
2628 }
2629 \f
2630 /* Very simple linked list structure for recording apuinfo values. */
2631 typedef struct apuinfo_list
2632 {
2633 struct apuinfo_list *next;
2634 unsigned long value;
2635 }
2636 apuinfo_list;
2637
2638 static apuinfo_list *head;
2639 static bfd_boolean apuinfo_set;
2640
2641 static void
2642 apuinfo_list_init (void)
2643 {
2644 head = NULL;
2645 apuinfo_set = FALSE;
2646 }
2647
2648 static void
2649 apuinfo_list_add (unsigned long value)
2650 {
2651 apuinfo_list *entry = head;
2652
2653 while (entry != NULL)
2654 {
2655 if (entry->value == value)
2656 return;
2657 entry = entry->next;
2658 }
2659
2660 entry = bfd_malloc (sizeof (* entry));
2661 if (entry == NULL)
2662 return;
2663
2664 entry->value = value;
2665 entry->next = head;
2666 head = entry;
2667 }
2668
2669 static unsigned
2670 apuinfo_list_length (void)
2671 {
2672 apuinfo_list *entry;
2673 unsigned long count;
2674
2675 for (entry = head, count = 0;
2676 entry;
2677 entry = entry->next)
2678 ++ count;
2679
2680 return count;
2681 }
2682
2683 static inline unsigned long
2684 apuinfo_list_element (unsigned long number)
2685 {
2686 apuinfo_list * entry;
2687
2688 for (entry = head;
2689 entry && number --;
2690 entry = entry->next)
2691 ;
2692
2693 return entry ? entry->value : 0;
2694 }
2695
2696 static void
2697 apuinfo_list_finish (void)
2698 {
2699 apuinfo_list *entry;
2700
2701 for (entry = head; entry;)
2702 {
2703 apuinfo_list *next = entry->next;
2704 free (entry);
2705 entry = next;
2706 }
2707
2708 head = NULL;
2709 }
2710
2711 /* Scan the input BFDs and create a linked list of
2712 the APUinfo values that will need to be emitted. */
2713
2714 static void
2715 ppc_elf_begin_write_processing (bfd *abfd, struct bfd_link_info *link_info)
2716 {
2717 bfd *ibfd;
2718 asection *asec;
2719 char *buffer = NULL;
2720 bfd_size_type largest_input_size = 0;
2721 unsigned i;
2722 unsigned long length;
2723 const char *error_message = NULL;
2724
2725 if (link_info == NULL)
2726 return;
2727
2728 apuinfo_list_init ();
2729
2730 /* Read in the input sections contents. */
2731 for (ibfd = link_info->input_bfds; ibfd; ibfd = ibfd->link.next)
2732 {
2733 unsigned long datum;
2734
2735 asec = bfd_get_section_by_name (ibfd, APUINFO_SECTION_NAME);
2736 if (asec == NULL)
2737 continue;
2738
2739 /* xgettext:c-format */
2740 error_message = _("corrupt %s section in %pB");
2741 length = asec->size;
2742 if (length < 20)
2743 goto fail;
2744
2745 apuinfo_set = TRUE;
2746 if (largest_input_size < asec->size)
2747 {
2748 if (buffer)
2749 free (buffer);
2750 largest_input_size = asec->size;
2751 buffer = bfd_malloc (largest_input_size);
2752 if (!buffer)
2753 return;
2754 }
2755
2756 if (bfd_seek (ibfd, asec->filepos, SEEK_SET) != 0
2757 || (bfd_bread (buffer, length, ibfd) != length))
2758 {
2759 /* xgettext:c-format */
2760 error_message = _("unable to read in %s section from %pB");
2761 goto fail;
2762 }
2763
2764 /* Verify the contents of the header. Note - we have to
2765 extract the values this way in order to allow for a
2766 host whose endian-ness is different from the target. */
2767 datum = bfd_get_32 (ibfd, buffer);
2768 if (datum != sizeof APUINFO_LABEL)
2769 goto fail;
2770
2771 datum = bfd_get_32 (ibfd, buffer + 8);
2772 if (datum != 0x2)
2773 goto fail;
2774
2775 if (strcmp (buffer + 12, APUINFO_LABEL) != 0)
2776 goto fail;
2777
2778 /* Get the number of bytes used for apuinfo entries. */
2779 datum = bfd_get_32 (ibfd, buffer + 4);
2780 if (datum + 20 != length)
2781 goto fail;
2782
2783 /* Scan the apuinfo section, building a list of apuinfo numbers. */
2784 for (i = 0; i < datum; i += 4)
2785 apuinfo_list_add (bfd_get_32 (ibfd, buffer + 20 + i));
2786 }
2787
2788 error_message = NULL;
2789
2790 if (apuinfo_set)
2791 {
2792 /* Compute the size of the output section. */
2793 unsigned num_entries = apuinfo_list_length ();
2794
2795 /* Set the output section size, if it exists. */
2796 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2797
2798 if (asec && ! bfd_set_section_size (abfd, asec, 20 + num_entries * 4))
2799 {
2800 ibfd = abfd;
2801 /* xgettext:c-format */
2802 error_message = _("warning: unable to set size of %s section in %pB");
2803 }
2804 }
2805
2806 fail:
2807 if (buffer)
2808 free (buffer);
2809
2810 if (error_message)
2811 _bfd_error_handler (error_message, APUINFO_SECTION_NAME, ibfd);
2812 }
2813
2814 /* Prevent the output section from accumulating the input sections'
2815 contents. We have already stored this in our linked list structure. */
2816
2817 static bfd_boolean
2818 ppc_elf_write_section (bfd *abfd ATTRIBUTE_UNUSED,
2819 struct bfd_link_info *link_info ATTRIBUTE_UNUSED,
2820 asection *asec,
2821 bfd_byte *contents ATTRIBUTE_UNUSED)
2822 {
2823 return apuinfo_set && strcmp (asec->name, APUINFO_SECTION_NAME) == 0;
2824 }
2825
2826 /* Finally we can generate the output section. */
2827
2828 static void
2829 ppc_elf_final_write_processing (bfd *abfd, bfd_boolean linker ATTRIBUTE_UNUSED)
2830 {
2831 bfd_byte *buffer;
2832 asection *asec;
2833 unsigned i;
2834 unsigned num_entries;
2835 bfd_size_type length;
2836
2837 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2838 if (asec == NULL)
2839 return;
2840
2841 if (!apuinfo_set)
2842 return;
2843
2844 length = asec->size;
2845 if (length < 20)
2846 return;
2847
2848 buffer = bfd_malloc (length);
2849 if (buffer == NULL)
2850 {
2851 _bfd_error_handler
2852 (_("failed to allocate space for new APUinfo section"));
2853 return;
2854 }
2855
2856 /* Create the apuinfo header. */
2857 num_entries = apuinfo_list_length ();
2858 bfd_put_32 (abfd, sizeof APUINFO_LABEL, buffer);
2859 bfd_put_32 (abfd, num_entries * 4, buffer + 4);
2860 bfd_put_32 (abfd, 0x2, buffer + 8);
2861 strcpy ((char *) buffer + 12, APUINFO_LABEL);
2862
2863 length = 20;
2864 for (i = 0; i < num_entries; i++)
2865 {
2866 bfd_put_32 (abfd, apuinfo_list_element (i), buffer + length);
2867 length += 4;
2868 }
2869
2870 if (length != asec->size)
2871 _bfd_error_handler (_("failed to compute new APUinfo section"));
2872
2873 if (! bfd_set_section_contents (abfd, asec, buffer, (file_ptr) 0, length))
2874 _bfd_error_handler (_("failed to install new APUinfo section"));
2875
2876 free (buffer);
2877
2878 apuinfo_list_finish ();
2879 }
2880 \f
2881 static bfd_boolean
2882 is_nonpic_glink_stub (bfd *abfd, asection *glink, bfd_vma off)
2883 {
2884 bfd_byte buf[4 * 4];
2885
2886 if (!bfd_get_section_contents (abfd, glink, buf, off, sizeof buf))
2887 return FALSE;
2888
2889 return ((bfd_get_32 (abfd, buf + 0) & 0xffff0000) == LIS_11
2890 && (bfd_get_32 (abfd, buf + 4) & 0xffff0000) == LWZ_11_11
2891 && bfd_get_32 (abfd, buf + 8) == MTCTR_11
2892 && bfd_get_32 (abfd, buf + 12) == BCTR);
2893 }
2894
2895 static bfd_boolean
2896 section_covers_vma (bfd *abfd ATTRIBUTE_UNUSED, asection *section, void *ptr)
2897 {
2898 bfd_vma vma = *(bfd_vma *) ptr;
2899 return ((section->flags & SEC_ALLOC) != 0
2900 && section->vma <= vma
2901 && vma < section->vma + section->size);
2902 }
2903
2904 static long
2905 ppc_elf_get_synthetic_symtab (bfd *abfd, long symcount, asymbol **syms,
2906 long dynsymcount, asymbol **dynsyms,
2907 asymbol **ret)
2908 {
2909 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
2910 asection *plt, *relplt, *dynamic, *glink;
2911 bfd_vma glink_vma = 0;
2912 bfd_vma resolv_vma = 0;
2913 bfd_vma stub_off;
2914 asymbol *s;
2915 arelent *p;
2916 long count, i, stub_delta;
2917 size_t size;
2918 char *names;
2919 bfd_byte buf[4];
2920
2921 *ret = NULL;
2922
2923 if ((abfd->flags & (DYNAMIC | EXEC_P)) == 0)
2924 return 0;
2925
2926 if (dynsymcount <= 0)
2927 return 0;
2928
2929 relplt = bfd_get_section_by_name (abfd, ".rela.plt");
2930 if (relplt == NULL)
2931 return 0;
2932
2933 plt = bfd_get_section_by_name (abfd, ".plt");
2934 if (plt == NULL)
2935 return 0;
2936
2937 /* Call common code to handle old-style executable PLTs. */
2938 if (elf_section_flags (plt) & SHF_EXECINSTR)
2939 return _bfd_elf_get_synthetic_symtab (abfd, symcount, syms,
2940 dynsymcount, dynsyms, ret);
2941
2942 /* If this object was prelinked, the prelinker stored the address
2943 of .glink at got[1]. If it wasn't prelinked, got[1] will be zero. */
2944 dynamic = bfd_get_section_by_name (abfd, ".dynamic");
2945 if (dynamic != NULL)
2946 {
2947 bfd_byte *dynbuf, *extdyn, *extdynend;
2948 size_t extdynsize;
2949 void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *);
2950
2951 if (!bfd_malloc_and_get_section (abfd, dynamic, &dynbuf))
2952 return -1;
2953
2954 extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn;
2955 swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in;
2956
2957 extdyn = dynbuf;
2958 extdynend = extdyn + dynamic->size;
2959 for (; extdyn < extdynend; extdyn += extdynsize)
2960 {
2961 Elf_Internal_Dyn dyn;
2962 (*swap_dyn_in) (abfd, extdyn, &dyn);
2963
2964 if (dyn.d_tag == DT_NULL)
2965 break;
2966
2967 if (dyn.d_tag == DT_PPC_GOT)
2968 {
2969 unsigned int g_o_t = dyn.d_un.d_val;
2970 asection *got = bfd_get_section_by_name (abfd, ".got");
2971 if (got != NULL
2972 && bfd_get_section_contents (abfd, got, buf,
2973 g_o_t - got->vma + 4, 4))
2974 glink_vma = bfd_get_32 (abfd, buf);
2975 break;
2976 }
2977 }
2978 free (dynbuf);
2979 }
2980
2981 /* Otherwise we read the first plt entry. */
2982 if (glink_vma == 0)
2983 {
2984 if (bfd_get_section_contents (abfd, plt, buf, 0, 4))
2985 glink_vma = bfd_get_32 (abfd, buf);
2986 }
2987
2988 if (glink_vma == 0)
2989 return 0;
2990
2991 /* The .glink section usually does not survive the final
2992 link; search for the section (usually .text) where the
2993 glink stubs now reside. */
2994 glink = bfd_sections_find_if (abfd, section_covers_vma, &glink_vma);
2995 if (glink == NULL)
2996 return 0;
2997
2998 /* Determine glink PLT resolver by reading the relative branch
2999 from the first glink stub. */
3000 if (bfd_get_section_contents (abfd, glink, buf,
3001 glink_vma - glink->vma, 4))
3002 {
3003 unsigned int insn = bfd_get_32 (abfd, buf);
3004
3005 /* The first glink stub may either branch to the resolver ... */
3006 insn ^= B;
3007 if ((insn & ~0x3fffffc) == 0)
3008 resolv_vma = glink_vma + (insn ^ 0x2000000) - 0x2000000;
3009
3010 /* ... or fall through a bunch of NOPs. */
3011 else if ((insn ^ B ^ NOP) == 0)
3012 for (i = 4;
3013 bfd_get_section_contents (abfd, glink, buf,
3014 glink_vma - glink->vma + i, 4);
3015 i += 4)
3016 if (bfd_get_32 (abfd, buf) != NOP)
3017 {
3018 resolv_vma = glink_vma + i;
3019 break;
3020 }
3021 }
3022
3023 count = relplt->size / sizeof (Elf32_External_Rela);
3024 /* If the stubs are those for -shared/-pie then we might have
3025 multiple stubs for each plt entry. If that is the case then
3026 there is no way to associate stubs with their plt entries short
3027 of figuring out the GOT pointer value used in the stub.
3028 The offsets tested here need to cover all possible values of
3029 GLINK_ENTRY_SIZE for other than __tls_get_addr_opt. */
3030 stub_off = glink_vma - glink->vma;
3031 for (stub_delta = 16; stub_delta <= 32; stub_delta += 8)
3032 if (is_nonpic_glink_stub (abfd, glink, stub_off - stub_delta))
3033 break;
3034 if (stub_delta > 32)
3035 return 0;
3036
3037 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
3038 if (! (*slurp_relocs) (abfd, relplt, dynsyms, TRUE))
3039 return -1;
3040
3041 size = count * sizeof (asymbol);
3042 p = relplt->relocation;
3043 for (i = 0; i < count; i++, p++)
3044 {
3045 size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt");
3046 if (p->addend != 0)
3047 size += sizeof ("+0x") - 1 + 8;
3048 }
3049
3050 size += sizeof (asymbol) + sizeof ("__glink");
3051
3052 if (resolv_vma)
3053 size += sizeof (asymbol) + sizeof ("__glink_PLTresolve");
3054
3055 s = *ret = bfd_malloc (size);
3056 if (s == NULL)
3057 return -1;
3058
3059 stub_off = glink_vma - glink->vma;
3060 names = (char *) (s + count + 1 + (resolv_vma != 0));
3061 p = relplt->relocation + count - 1;
3062 for (i = 0; i < count; i++)
3063 {
3064 size_t len;
3065
3066 stub_off -= stub_delta;
3067 if (strcmp ((*p->sym_ptr_ptr)->name, "__tls_get_addr_opt") == 0)
3068 stub_off -= 32;
3069 *s = **p->sym_ptr_ptr;
3070 /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since
3071 we are defining a symbol, ensure one of them is set. */
3072 if ((s->flags & BSF_LOCAL) == 0)
3073 s->flags |= BSF_GLOBAL;
3074 s->flags |= BSF_SYNTHETIC;
3075 s->section = glink;
3076 s->value = stub_off;
3077 s->name = names;
3078 s->udata.p = NULL;
3079 len = strlen ((*p->sym_ptr_ptr)->name);
3080 memcpy (names, (*p->sym_ptr_ptr)->name, len);
3081 names += len;
3082 if (p->addend != 0)
3083 {
3084 memcpy (names, "+0x", sizeof ("+0x") - 1);
3085 names += sizeof ("+0x") - 1;
3086 bfd_sprintf_vma (abfd, names, p->addend);
3087 names += strlen (names);
3088 }
3089 memcpy (names, "@plt", sizeof ("@plt"));
3090 names += sizeof ("@plt");
3091 ++s;
3092 --p;
3093 }
3094
3095 /* Add a symbol at the start of the glink branch table. */
3096 memset (s, 0, sizeof *s);
3097 s->the_bfd = abfd;
3098 s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
3099 s->section = glink;
3100 s->value = glink_vma - glink->vma;
3101 s->name = names;
3102 memcpy (names, "__glink", sizeof ("__glink"));
3103 names += sizeof ("__glink");
3104 s++;
3105 count++;
3106
3107 if (resolv_vma)
3108 {
3109 /* Add a symbol for the glink PLT resolver. */
3110 memset (s, 0, sizeof *s);
3111 s->the_bfd = abfd;
3112 s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
3113 s->section = glink;
3114 s->value = resolv_vma - glink->vma;
3115 s->name = names;
3116 memcpy (names, "__glink_PLTresolve", sizeof ("__glink_PLTresolve"));
3117 names += sizeof ("__glink_PLTresolve");
3118 s++;
3119 count++;
3120 }
3121
3122 return count;
3123 }
3124 \f
3125 /* The following functions are specific to the ELF linker, while
3126 functions above are used generally. They appear in this file more
3127 or less in the order in which they are called. eg.
3128 ppc_elf_check_relocs is called early in the link process,
3129 ppc_elf_finish_dynamic_sections is one of the last functions
3130 called. */
3131
3132 /* Track PLT entries needed for a given symbol. We might need more
3133 than one glink entry per symbol when generating a pic binary. */
3134 struct plt_entry
3135 {
3136 struct plt_entry *next;
3137
3138 /* -fPIC uses multiple GOT sections, one per file, called ".got2".
3139 This field stores the offset into .got2 used to initialise the
3140 GOT pointer reg. It will always be at least 32768. (Current
3141 gcc always uses an offset of 32768, but ld -r will pack .got2
3142 sections together resulting in larger offsets). */
3143 bfd_vma addend;
3144
3145 /* The .got2 section. */
3146 asection *sec;
3147
3148 /* PLT refcount or offset. */
3149 union
3150 {
3151 bfd_signed_vma refcount;
3152 bfd_vma offset;
3153 } plt;
3154
3155 /* .glink stub offset. */
3156 bfd_vma glink_offset;
3157 };
3158
3159 /* Of those relocs that might be copied as dynamic relocs, this
3160 function selects those that must be copied when linking a shared
3161 library or PIE, even when the symbol is local. */
3162
3163 static int
3164 must_be_dyn_reloc (struct bfd_link_info *info,
3165 enum elf_ppc_reloc_type r_type)
3166 {
3167 switch (r_type)
3168 {
3169 default:
3170 /* Only relative relocs can be resolved when the object load
3171 address isn't fixed. DTPREL32 is excluded because the
3172 dynamic linker needs to differentiate global dynamic from
3173 local dynamic __tls_index pairs when PPC_OPT_TLS is set. */
3174 return 1;
3175
3176 case R_PPC_REL24:
3177 case R_PPC_REL14:
3178 case R_PPC_REL14_BRTAKEN:
3179 case R_PPC_REL14_BRNTAKEN:
3180 case R_PPC_REL32:
3181 return 0;
3182
3183 case R_PPC_TPREL32:
3184 case R_PPC_TPREL16:
3185 case R_PPC_TPREL16_LO:
3186 case R_PPC_TPREL16_HI:
3187 case R_PPC_TPREL16_HA:
3188 /* These relocations are relative but in a shared library the
3189 linker doesn't know the thread pointer base. */
3190 return bfd_link_dll (info);
3191 }
3192 }
3193
3194 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
3195 copying dynamic variables from a shared lib into an app's dynbss
3196 section, and instead use a dynamic relocation to point into the
3197 shared lib. */
3198 #define ELIMINATE_COPY_RELOCS 1
3199
3200 /* Used to track dynamic relocations for local symbols. */
3201 struct ppc_dyn_relocs
3202 {
3203 struct ppc_dyn_relocs *next;
3204
3205 /* The input section of the reloc. */
3206 asection *sec;
3207
3208 /* Total number of relocs copied for the input section. */
3209 unsigned int count : 31;
3210
3211 /* Whether this entry is for STT_GNU_IFUNC symbols. */
3212 unsigned int ifunc : 1;
3213 };
3214
3215 /* PPC ELF linker hash entry. */
3216
3217 struct ppc_elf_link_hash_entry
3218 {
3219 struct elf_link_hash_entry elf;
3220
3221 /* If this symbol is used in the linker created sections, the processor
3222 specific backend uses this field to map the field into the offset
3223 from the beginning of the section. */
3224 elf_linker_section_pointers_t *linker_section_pointer;
3225
3226 /* Track dynamic relocs copied for this symbol. */
3227 struct elf_dyn_relocs *dyn_relocs;
3228
3229 /* Contexts in which symbol is used in the GOT (or TOC).
3230 TLS_GD .. TLS_TLS bits are or'd into the mask as the
3231 corresponding relocs are encountered during check_relocs.
3232 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
3233 indicate the corresponding GOT entry type is not needed. */
3234 #define TLS_GD 1 /* GD reloc. */
3235 #define TLS_LD 2 /* LD reloc. */
3236 #define TLS_TPREL 4 /* TPREL reloc, => IE. */
3237 #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
3238 #define TLS_TLS 16 /* Any TLS reloc. */
3239 #define TLS_TPRELGD 32 /* TPREL reloc resulting from GD->IE. */
3240 #define PLT_IFUNC 64 /* STT_GNU_IFUNC. */
3241 unsigned char tls_mask;
3242
3243 /* Nonzero if we have seen a small data relocation referring to this
3244 symbol. */
3245 unsigned char has_sda_refs : 1;
3246
3247 /* Flag use of given relocations. */
3248 unsigned char has_addr16_ha : 1;
3249 unsigned char has_addr16_lo : 1;
3250 };
3251
3252 #define ppc_elf_hash_entry(ent) ((struct ppc_elf_link_hash_entry *) (ent))
3253
3254 /* PPC ELF linker hash table. */
3255
3256 struct ppc_elf_link_hash_table
3257 {
3258 struct elf_link_hash_table elf;
3259
3260 /* Various options passed from the linker. */
3261 struct ppc_elf_params *params;
3262
3263 /* Short-cuts to get to dynamic linker sections. */
3264 asection *glink;
3265 asection *dynsbss;
3266 asection *relsbss;
3267 elf_linker_section_t sdata[2];
3268 asection *sbss;
3269 asection *glink_eh_frame;
3270
3271 /* The (unloaded but important) .rela.plt.unloaded on VxWorks. */
3272 asection *srelplt2;
3273
3274 /* Shortcut to __tls_get_addr. */
3275 struct elf_link_hash_entry *tls_get_addr;
3276
3277 /* The bfd that forced an old-style PLT. */
3278 bfd *old_bfd;
3279
3280 /* TLS local dynamic got entry handling. */
3281 union {
3282 bfd_signed_vma refcount;
3283 bfd_vma offset;
3284 } tlsld_got;
3285
3286 /* Offset of branch table to PltResolve function in glink. */
3287 bfd_vma glink_pltresolve;
3288
3289 /* Size of reserved GOT entries. */
3290 unsigned int got_header_size;
3291 /* Non-zero if allocating the header left a gap. */
3292 unsigned int got_gap;
3293
3294 /* The type of PLT we have chosen to use. */
3295 enum ppc_elf_plt_type plt_type;
3296
3297 /* True if the target system is VxWorks. */
3298 unsigned int is_vxworks:1;
3299
3300 /* Whether there exist local gnu indirect function resolvers,
3301 referenced by dynamic relocations. */
3302 unsigned int local_ifunc_resolver:1;
3303 unsigned int maybe_local_ifunc_resolver:1;
3304
3305 /* Set if tls optimization is enabled. */
3306 unsigned int do_tls_opt:1;
3307
3308 /* The size of PLT entries. */
3309 int plt_entry_size;
3310 /* The distance between adjacent PLT slots. */
3311 int plt_slot_size;
3312 /* The size of the first PLT entry. */
3313 int plt_initial_entry_size;
3314
3315 /* Small local sym cache. */
3316 struct sym_cache sym_cache;
3317 };
3318
3319 /* Rename some of the generic section flags to better document how they
3320 are used for ppc32. The flags are only valid for ppc32 elf objects. */
3321
3322 /* Nonzero if this section has TLS related relocations. */
3323 #define has_tls_reloc sec_flg0
3324
3325 /* Nonzero if this section has a call to __tls_get_addr. */
3326 #define has_tls_get_addr_call sec_flg1
3327
3328 /* Get the PPC ELF linker hash table from a link_info structure. */
3329
3330 #define ppc_elf_hash_table(p) \
3331 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
3332 == PPC32_ELF_DATA ? ((struct ppc_elf_link_hash_table *) ((p)->hash)) : NULL)
3333
3334 /* Create an entry in a PPC ELF linker hash table. */
3335
3336 static struct bfd_hash_entry *
3337 ppc_elf_link_hash_newfunc (struct bfd_hash_entry *entry,
3338 struct bfd_hash_table *table,
3339 const char *string)
3340 {
3341 /* Allocate the structure if it has not already been allocated by a
3342 subclass. */
3343 if (entry == NULL)
3344 {
3345 entry = bfd_hash_allocate (table,
3346 sizeof (struct ppc_elf_link_hash_entry));
3347 if (entry == NULL)
3348 return entry;
3349 }
3350
3351 /* Call the allocation method of the superclass. */
3352 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
3353 if (entry != NULL)
3354 {
3355 ppc_elf_hash_entry (entry)->linker_section_pointer = NULL;
3356 ppc_elf_hash_entry (entry)->dyn_relocs = NULL;
3357 ppc_elf_hash_entry (entry)->tls_mask = 0;
3358 ppc_elf_hash_entry (entry)->has_sda_refs = 0;
3359 }
3360
3361 return entry;
3362 }
3363
3364 /* Create a PPC ELF linker hash table. */
3365
3366 static struct bfd_link_hash_table *
3367 ppc_elf_link_hash_table_create (bfd *abfd)
3368 {
3369 struct ppc_elf_link_hash_table *ret;
3370 static struct ppc_elf_params default_params
3371 = { PLT_OLD, 0, 0, 1, 0, 0, 12, 0, 0, 0 };
3372
3373 ret = bfd_zmalloc (sizeof (struct ppc_elf_link_hash_table));
3374 if (ret == NULL)
3375 return NULL;
3376
3377 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd,
3378 ppc_elf_link_hash_newfunc,
3379 sizeof (struct ppc_elf_link_hash_entry),
3380 PPC32_ELF_DATA))
3381 {
3382 free (ret);
3383 return NULL;
3384 }
3385
3386 ret->elf.init_plt_refcount.refcount = 0;
3387 ret->elf.init_plt_refcount.glist = NULL;
3388 ret->elf.init_plt_offset.offset = 0;
3389 ret->elf.init_plt_offset.glist = NULL;
3390
3391 ret->params = &default_params;
3392
3393 ret->sdata[0].name = ".sdata";
3394 ret->sdata[0].sym_name = "_SDA_BASE_";
3395 ret->sdata[0].bss_name = ".sbss";
3396
3397 ret->sdata[1].name = ".sdata2";
3398 ret->sdata[1].sym_name = "_SDA2_BASE_";
3399 ret->sdata[1].bss_name = ".sbss2";
3400
3401 ret->plt_entry_size = 12;
3402 ret->plt_slot_size = 8;
3403 ret->plt_initial_entry_size = 72;
3404
3405 return &ret->elf.root;
3406 }
3407
3408 /* Hook linker params into hash table. */
3409
3410 void
3411 ppc_elf_link_params (struct bfd_link_info *info, struct ppc_elf_params *params)
3412 {
3413 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
3414
3415 if (htab)
3416 htab->params = params;
3417 params->pagesize_p2 = bfd_log2 (params->pagesize);
3418 }
3419
3420 /* Create .got and the related sections. */
3421
3422 static bfd_boolean
3423 ppc_elf_create_got (bfd *abfd, struct bfd_link_info *info)
3424 {
3425 struct ppc_elf_link_hash_table *htab;
3426
3427 if (!_bfd_elf_create_got_section (abfd, info))
3428 return FALSE;
3429
3430 htab = ppc_elf_hash_table (info);
3431 if (!htab->is_vxworks)
3432 {
3433 /* The powerpc .got has a blrl instruction in it. Mark it
3434 executable. */
3435 flagword flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS
3436 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3437 if (!bfd_set_section_flags (abfd, htab->elf.sgot, flags))
3438 return FALSE;
3439 }
3440
3441 return TRUE;
3442 }
3443
3444 /* Create a special linker section, used for R_PPC_EMB_SDAI16 and
3445 R_PPC_EMB_SDA2I16 pointers. These sections become part of .sdata
3446 and .sdata2. Create _SDA_BASE_ and _SDA2_BASE too. */
3447
3448 static bfd_boolean
3449 ppc_elf_create_linker_section (bfd *abfd,
3450 struct bfd_link_info *info,
3451 flagword flags,
3452 elf_linker_section_t *lsect)
3453 {
3454 asection *s;
3455
3456 flags |= (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
3457 | SEC_LINKER_CREATED);
3458
3459 s = bfd_make_section_anyway_with_flags (abfd, lsect->name, flags);
3460 if (s == NULL)
3461 return FALSE;
3462 lsect->section = s;
3463
3464 /* Define the sym on the first section of this name. */
3465 s = bfd_get_section_by_name (abfd, lsect->name);
3466
3467 lsect->sym = _bfd_elf_define_linkage_sym (abfd, info, s, lsect->sym_name);
3468 if (lsect->sym == NULL)
3469 return FALSE;
3470 lsect->sym->root.u.def.value = 0x8000;
3471 return TRUE;
3472 }
3473
3474 static bfd_boolean
3475 ppc_elf_create_glink (bfd *abfd, struct bfd_link_info *info)
3476 {
3477 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
3478 asection *s;
3479 flagword flags;
3480 int p2align;
3481
3482 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY | SEC_HAS_CONTENTS
3483 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3484 s = bfd_make_section_anyway_with_flags (abfd, ".glink", flags);
3485 htab->glink = s;
3486 p2align = htab->params->ppc476_workaround ? 6 : 4;
3487 if (p2align < htab->params->plt_stub_align)
3488 p2align = htab->params->plt_stub_align;
3489 if (s == NULL
3490 || !bfd_set_section_alignment (abfd, s, p2align))
3491 return FALSE;
3492
3493 if (!info->no_ld_generated_unwind_info)
3494 {
3495 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
3496 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3497 s = bfd_make_section_anyway_with_flags (abfd, ".eh_frame", flags);
3498 htab->glink_eh_frame = s;
3499 if (s == NULL
3500 || !bfd_set_section_alignment (abfd, s, 2))
3501 return FALSE;
3502 }
3503
3504 flags = SEC_ALLOC | SEC_LINKER_CREATED;
3505 s = bfd_make_section_anyway_with_flags (abfd, ".iplt", flags);
3506 htab->elf.iplt = s;
3507 if (s == NULL
3508 || !bfd_set_section_alignment (abfd, s, 4))
3509 return FALSE;
3510
3511 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
3512 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3513 s = bfd_make_section_anyway_with_flags (abfd, ".rela.iplt", flags);
3514 htab->elf.irelplt = s;
3515 if (s == NULL
3516 || ! bfd_set_section_alignment (abfd, s, 2))
3517 return FALSE;
3518
3519 if (!ppc_elf_create_linker_section (abfd, info, 0,
3520 &htab->sdata[0]))
3521 return FALSE;
3522
3523 if (!ppc_elf_create_linker_section (abfd, info, SEC_READONLY,
3524 &htab->sdata[1]))
3525 return FALSE;
3526
3527 return TRUE;
3528 }
3529
3530 /* We have to create .dynsbss and .rela.sbss here so that they get mapped
3531 to output sections (just like _bfd_elf_create_dynamic_sections has
3532 to create .dynbss and .rela.bss). */
3533
3534 static bfd_boolean
3535 ppc_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
3536 {
3537 struct ppc_elf_link_hash_table *htab;
3538 asection *s;
3539 flagword flags;
3540
3541 htab = ppc_elf_hash_table (info);
3542
3543 if (htab->elf.sgot == NULL
3544 && !ppc_elf_create_got (abfd, info))
3545 return FALSE;
3546
3547 if (!_bfd_elf_create_dynamic_sections (abfd, info))
3548 return FALSE;
3549
3550 if (htab->glink == NULL
3551 && !ppc_elf_create_glink (abfd, info))
3552 return FALSE;
3553
3554 s = bfd_make_section_anyway_with_flags (abfd, ".dynsbss",
3555 SEC_ALLOC | SEC_LINKER_CREATED);
3556 htab->dynsbss = s;
3557 if (s == NULL)
3558 return FALSE;
3559
3560 if (! bfd_link_pic (info))
3561 {
3562 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
3563 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3564 s = bfd_make_section_anyway_with_flags (abfd, ".rela.sbss", flags);
3565 htab->relsbss = s;
3566 if (s == NULL
3567 || ! bfd_set_section_alignment (abfd, s, 2))
3568 return FALSE;
3569 }
3570
3571 if (htab->is_vxworks
3572 && !elf_vxworks_create_dynamic_sections (abfd, info, &htab->srelplt2))
3573 return FALSE;
3574
3575 s = htab->elf.splt;
3576 flags = SEC_ALLOC | SEC_CODE | SEC_LINKER_CREATED;
3577 if (htab->plt_type == PLT_VXWORKS)
3578 /* The VxWorks PLT is a loaded section with contents. */
3579 flags |= SEC_HAS_CONTENTS | SEC_LOAD | SEC_READONLY;
3580 return bfd_set_section_flags (abfd, s, flags);
3581 }
3582
3583 /* Copy the extra info we tack onto an elf_link_hash_entry. */
3584
3585 static void
3586 ppc_elf_copy_indirect_symbol (struct bfd_link_info *info,
3587 struct elf_link_hash_entry *dir,
3588 struct elf_link_hash_entry *ind)
3589 {
3590 struct ppc_elf_link_hash_entry *edir, *eind;
3591
3592 edir = (struct ppc_elf_link_hash_entry *) dir;
3593 eind = (struct ppc_elf_link_hash_entry *) ind;
3594
3595 edir->tls_mask |= eind->tls_mask;
3596 edir->has_sda_refs |= eind->has_sda_refs;
3597
3598 if (edir->elf.versioned != versioned_hidden)
3599 edir->elf.ref_dynamic |= eind->elf.ref_dynamic;
3600 edir->elf.ref_regular |= eind->elf.ref_regular;
3601 edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak;
3602 edir->elf.non_got_ref |= eind->elf.non_got_ref;
3603 edir->elf.needs_plt |= eind->elf.needs_plt;
3604 edir->elf.pointer_equality_needed |= eind->elf.pointer_equality_needed;
3605
3606 /* If we were called to copy over info for a weak sym, that's all. */
3607 if (eind->elf.root.type != bfd_link_hash_indirect)
3608 return;
3609
3610 if (eind->dyn_relocs != NULL)
3611 {
3612 if (edir->dyn_relocs != NULL)
3613 {
3614 struct elf_dyn_relocs **pp;
3615 struct elf_dyn_relocs *p;
3616
3617 /* Add reloc counts against the indirect sym to the direct sym
3618 list. Merge any entries against the same section. */
3619 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
3620 {
3621 struct elf_dyn_relocs *q;
3622
3623 for (q = edir->dyn_relocs; q != NULL; q = q->next)
3624 if (q->sec == p->sec)
3625 {
3626 q->pc_count += p->pc_count;
3627 q->count += p->count;
3628 *pp = p->next;
3629 break;
3630 }
3631 if (q == NULL)
3632 pp = &p->next;
3633 }
3634 *pp = edir->dyn_relocs;
3635 }
3636
3637 edir->dyn_relocs = eind->dyn_relocs;
3638 eind->dyn_relocs = NULL;
3639 }
3640
3641 /* Copy over the GOT refcount entries that we may have already seen to
3642 the symbol which just became indirect. */
3643 edir->elf.got.refcount += eind->elf.got.refcount;
3644 eind->elf.got.refcount = 0;
3645
3646 /* And plt entries. */
3647 if (eind->elf.plt.plist != NULL)
3648 {
3649 if (edir->elf.plt.plist != NULL)
3650 {
3651 struct plt_entry **entp;
3652 struct plt_entry *ent;
3653
3654 for (entp = &eind->elf.plt.plist; (ent = *entp) != NULL; )
3655 {
3656 struct plt_entry *dent;
3657
3658 for (dent = edir->elf.plt.plist; dent != NULL; dent = dent->next)
3659 if (dent->sec == ent->sec && dent->addend == ent->addend)
3660 {
3661 dent->plt.refcount += ent->plt.refcount;
3662 *entp = ent->next;
3663 break;
3664 }
3665 if (dent == NULL)
3666 entp = &ent->next;
3667 }
3668 *entp = edir->elf.plt.plist;
3669 }
3670
3671 edir->elf.plt.plist = eind->elf.plt.plist;
3672 eind->elf.plt.plist = NULL;
3673 }
3674
3675 if (eind->elf.dynindx != -1)
3676 {
3677 if (edir->elf.dynindx != -1)
3678 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
3679 edir->elf.dynstr_index);
3680 edir->elf.dynindx = eind->elf.dynindx;
3681 edir->elf.dynstr_index = eind->elf.dynstr_index;
3682 eind->elf.dynindx = -1;
3683 eind->elf.dynstr_index = 0;
3684 }
3685 }
3686
3687 /* Hook called by the linker routine which adds symbols from an object
3688 file. We use it to put .comm items in .sbss, and not .bss. */
3689
3690 static bfd_boolean
3691 ppc_elf_add_symbol_hook (bfd *abfd,
3692 struct bfd_link_info *info,
3693 Elf_Internal_Sym *sym,
3694 const char **namep ATTRIBUTE_UNUSED,
3695 flagword *flagsp ATTRIBUTE_UNUSED,
3696 asection **secp,
3697 bfd_vma *valp)
3698 {
3699 if (sym->st_shndx == SHN_COMMON
3700 && !bfd_link_relocatable (info)
3701 && is_ppc_elf (info->output_bfd)
3702 && sym->st_size <= elf_gp_size (abfd))
3703 {
3704 /* Common symbols less than or equal to -G nn bytes are automatically
3705 put into .sbss. */
3706 struct ppc_elf_link_hash_table *htab;
3707
3708 htab = ppc_elf_hash_table (info);
3709 if (htab->sbss == NULL)
3710 {
3711 flagword flags = SEC_IS_COMMON | SEC_LINKER_CREATED;
3712
3713 if (!htab->elf.dynobj)
3714 htab->elf.dynobj = abfd;
3715
3716 htab->sbss = bfd_make_section_anyway_with_flags (htab->elf.dynobj,
3717 ".sbss",
3718 flags);
3719 if (htab->sbss == NULL)
3720 return FALSE;
3721 }
3722
3723 *secp = htab->sbss;
3724 *valp = sym->st_size;
3725 }
3726
3727 if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC
3728 && (abfd->flags & DYNAMIC) == 0
3729 && bfd_get_flavour (info->output_bfd) == bfd_target_elf_flavour)
3730 elf_tdata (info->output_bfd)->has_gnu_symbols |= elf_gnu_symbol_ifunc;
3731
3732 return TRUE;
3733 }
3734 \f
3735 /* Find a linker generated pointer with a given addend and type. */
3736
3737 static elf_linker_section_pointers_t *
3738 elf_find_pointer_linker_section
3739 (elf_linker_section_pointers_t *linker_pointers,
3740 bfd_vma addend,
3741 elf_linker_section_t *lsect)
3742 {
3743 for ( ; linker_pointers != NULL; linker_pointers = linker_pointers->next)
3744 if (lsect == linker_pointers->lsect && addend == linker_pointers->addend)
3745 return linker_pointers;
3746
3747 return NULL;
3748 }
3749
3750 /* Allocate a pointer to live in a linker created section. */
3751
3752 static bfd_boolean
3753 elf_allocate_pointer_linker_section (bfd *abfd,
3754 elf_linker_section_t *lsect,
3755 struct elf_link_hash_entry *h,
3756 const Elf_Internal_Rela *rel)
3757 {
3758 elf_linker_section_pointers_t **ptr_linker_section_ptr = NULL;
3759 elf_linker_section_pointers_t *linker_section_ptr;
3760 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
3761 bfd_size_type amt;
3762
3763 BFD_ASSERT (lsect != NULL);
3764
3765 /* Is this a global symbol? */
3766 if (h != NULL)
3767 {
3768 struct ppc_elf_link_hash_entry *eh;
3769
3770 /* Has this symbol already been allocated? If so, our work is done. */
3771 eh = (struct ppc_elf_link_hash_entry *) h;
3772 if (elf_find_pointer_linker_section (eh->linker_section_pointer,
3773 rel->r_addend,
3774 lsect))
3775 return TRUE;
3776
3777 ptr_linker_section_ptr = &eh->linker_section_pointer;
3778 }
3779 else
3780 {
3781 BFD_ASSERT (is_ppc_elf (abfd));
3782
3783 /* Allocation of a pointer to a local symbol. */
3784 elf_linker_section_pointers_t **ptr = elf_local_ptr_offsets (abfd);
3785
3786 /* Allocate a table to hold the local symbols if first time. */
3787 if (!ptr)
3788 {
3789 unsigned int num_symbols = elf_symtab_hdr (abfd).sh_info;
3790
3791 amt = num_symbols;
3792 amt *= sizeof (elf_linker_section_pointers_t *);
3793 ptr = bfd_zalloc (abfd, amt);
3794
3795 if (!ptr)
3796 return FALSE;
3797
3798 elf_local_ptr_offsets (abfd) = ptr;
3799 }
3800
3801 /* Has this symbol already been allocated? If so, our work is done. */
3802 if (elf_find_pointer_linker_section (ptr[r_symndx],
3803 rel->r_addend,
3804 lsect))
3805 return TRUE;
3806
3807 ptr_linker_section_ptr = &ptr[r_symndx];
3808 }
3809
3810 /* Allocate space for a pointer in the linker section, and allocate
3811 a new pointer record from internal memory. */
3812 BFD_ASSERT (ptr_linker_section_ptr != NULL);
3813 amt = sizeof (elf_linker_section_pointers_t);
3814 linker_section_ptr = bfd_alloc (abfd, amt);
3815
3816 if (!linker_section_ptr)
3817 return FALSE;
3818
3819 linker_section_ptr->next = *ptr_linker_section_ptr;
3820 linker_section_ptr->addend = rel->r_addend;
3821 linker_section_ptr->lsect = lsect;
3822 *ptr_linker_section_ptr = linker_section_ptr;
3823
3824 if (!bfd_set_section_alignment (lsect->section->owner, lsect->section, 2))
3825 return FALSE;
3826 linker_section_ptr->offset = lsect->section->size;
3827 lsect->section->size += 4;
3828
3829 #ifdef DEBUG
3830 fprintf (stderr,
3831 "Create pointer in linker section %s, offset = %ld, section size = %ld\n",
3832 lsect->name, (long) linker_section_ptr->offset,
3833 (long) lsect->section->size);
3834 #endif
3835
3836 return TRUE;
3837 }
3838
3839 static struct plt_entry **
3840 update_local_sym_info (bfd *abfd,
3841 Elf_Internal_Shdr *symtab_hdr,
3842 unsigned long r_symndx,
3843 int tls_type)
3844 {
3845 bfd_signed_vma *local_got_refcounts = elf_local_got_refcounts (abfd);
3846 struct plt_entry **local_plt;
3847 unsigned char *local_got_tls_masks;
3848
3849 if (local_got_refcounts == NULL)
3850 {
3851 bfd_size_type size = symtab_hdr->sh_info;
3852
3853 size *= (sizeof (*local_got_refcounts)
3854 + sizeof (*local_plt)
3855 + sizeof (*local_got_tls_masks));
3856 local_got_refcounts = bfd_zalloc (abfd, size);
3857 if (local_got_refcounts == NULL)
3858 return NULL;
3859 elf_local_got_refcounts (abfd) = local_got_refcounts;
3860 }
3861
3862 local_plt = (struct plt_entry **) (local_got_refcounts + symtab_hdr->sh_info);
3863 local_got_tls_masks = (unsigned char *) (local_plt + symtab_hdr->sh_info);
3864 local_got_tls_masks[r_symndx] |= tls_type;
3865 if (tls_type != PLT_IFUNC)
3866 local_got_refcounts[r_symndx] += 1;
3867 return local_plt + r_symndx;
3868 }
3869
3870 static bfd_boolean
3871 update_plt_info (bfd *abfd, struct plt_entry **plist,
3872 asection *sec, bfd_vma addend)
3873 {
3874 struct plt_entry *ent;
3875
3876 if (addend < 32768)
3877 sec = NULL;
3878 for (ent = *plist; ent != NULL; ent = ent->next)
3879 if (ent->sec == sec && ent->addend == addend)
3880 break;
3881 if (ent == NULL)
3882 {
3883 bfd_size_type amt = sizeof (*ent);
3884 ent = bfd_alloc (abfd, amt);
3885 if (ent == NULL)
3886 return FALSE;
3887 ent->next = *plist;
3888 ent->sec = sec;
3889 ent->addend = addend;
3890 ent->plt.refcount = 0;
3891 *plist = ent;
3892 }
3893 ent->plt.refcount += 1;
3894 return TRUE;
3895 }
3896
3897 static struct plt_entry *
3898 find_plt_ent (struct plt_entry **plist, asection *sec, bfd_vma addend)
3899 {
3900 struct plt_entry *ent;
3901
3902 if (addend < 32768)
3903 sec = NULL;
3904 for (ent = *plist; ent != NULL; ent = ent->next)
3905 if (ent->sec == sec && ent->addend == addend)
3906 break;
3907 return ent;
3908 }
3909
3910 static bfd_boolean
3911 is_branch_reloc (enum elf_ppc_reloc_type r_type)
3912 {
3913 return (r_type == R_PPC_PLTREL24
3914 || r_type == R_PPC_LOCAL24PC
3915 || r_type == R_PPC_REL24
3916 || r_type == R_PPC_REL14
3917 || r_type == R_PPC_REL14_BRTAKEN
3918 || r_type == R_PPC_REL14_BRNTAKEN
3919 || r_type == R_PPC_ADDR24
3920 || r_type == R_PPC_ADDR14
3921 || r_type == R_PPC_ADDR14_BRTAKEN
3922 || r_type == R_PPC_ADDR14_BRNTAKEN
3923 || r_type == R_PPC_VLE_REL24);
3924 }
3925
3926 static void
3927 bad_shared_reloc (bfd *abfd, enum elf_ppc_reloc_type r_type)
3928 {
3929 _bfd_error_handler
3930 /* xgettext:c-format */
3931 (_("%pB: relocation %s cannot be used when making a shared object"),
3932 abfd,
3933 ppc_elf_howto_table[r_type]->name);
3934 bfd_set_error (bfd_error_bad_value);
3935 }
3936
3937 /* Look through the relocs for a section during the first phase, and
3938 allocate space in the global offset table or procedure linkage
3939 table. */
3940
3941 static bfd_boolean
3942 ppc_elf_check_relocs (bfd *abfd,
3943 struct bfd_link_info *info,
3944 asection *sec,
3945 const Elf_Internal_Rela *relocs)
3946 {
3947 struct ppc_elf_link_hash_table *htab;
3948 Elf_Internal_Shdr *symtab_hdr;
3949 struct elf_link_hash_entry **sym_hashes;
3950 const Elf_Internal_Rela *rel;
3951 const Elf_Internal_Rela *rel_end;
3952 asection *got2, *sreloc;
3953 struct elf_link_hash_entry *tga;
3954
3955 if (bfd_link_relocatable (info))
3956 return TRUE;
3957
3958 /* Don't do anything special with non-loaded, non-alloced sections.
3959 In particular, any relocs in such sections should not affect GOT
3960 and PLT reference counting (ie. we don't allow them to create GOT
3961 or PLT entries), there's no possibility or desire to optimize TLS
3962 relocs, and there's not much point in propagating relocs to shared
3963 libs that the dynamic linker won't relocate. */
3964 if ((sec->flags & SEC_ALLOC) == 0)
3965 return TRUE;
3966
3967 #ifdef DEBUG
3968 _bfd_error_handler ("ppc_elf_check_relocs called for section %pA in %pB",
3969 sec, abfd);
3970 #endif
3971
3972 BFD_ASSERT (is_ppc_elf (abfd));
3973
3974 /* Initialize howto table if not already done. */
3975 if (!ppc_elf_howto_table[R_PPC_ADDR32])
3976 ppc_elf_howto_init ();
3977
3978 htab = ppc_elf_hash_table (info);
3979 if (htab->glink == NULL)
3980 {
3981 if (htab->elf.dynobj == NULL)
3982 htab->elf.dynobj = abfd;
3983 if (!ppc_elf_create_glink (htab->elf.dynobj, info))
3984 return FALSE;
3985 }
3986 tga = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
3987 FALSE, FALSE, TRUE);
3988 symtab_hdr = &elf_symtab_hdr (abfd);
3989 sym_hashes = elf_sym_hashes (abfd);
3990 got2 = bfd_get_section_by_name (abfd, ".got2");
3991 sreloc = NULL;
3992
3993 rel_end = relocs + sec->reloc_count;
3994 for (rel = relocs; rel < rel_end; rel++)
3995 {
3996 unsigned long r_symndx;
3997 enum elf_ppc_reloc_type r_type;
3998 struct elf_link_hash_entry *h;
3999 int tls_type;
4000 struct plt_entry **ifunc;
4001
4002 r_symndx = ELF32_R_SYM (rel->r_info);
4003 if (r_symndx < symtab_hdr->sh_info)
4004 h = NULL;
4005 else
4006 {
4007 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4008 while (h->root.type == bfd_link_hash_indirect
4009 || h->root.type == bfd_link_hash_warning)
4010 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4011 }
4012
4013 /* If a relocation refers to _GLOBAL_OFFSET_TABLE_, create the .got.
4014 This shows up in particular in an R_PPC_ADDR32 in the eabi
4015 startup code. */
4016 if (h != NULL
4017 && htab->elf.sgot == NULL
4018 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
4019 {
4020 if (htab->elf.dynobj == NULL)
4021 htab->elf.dynobj = abfd;
4022 if (!ppc_elf_create_got (htab->elf.dynobj, info))
4023 return FALSE;
4024 BFD_ASSERT (h == htab->elf.hgot);
4025 }
4026
4027 tls_type = 0;
4028 r_type = ELF32_R_TYPE (rel->r_info);
4029 ifunc = NULL;
4030 if (h == NULL && !htab->is_vxworks)
4031 {
4032 Elf_Internal_Sym *isym = bfd_sym_from_r_symndx (&htab->sym_cache,
4033 abfd, r_symndx);
4034 if (isym == NULL)
4035 return FALSE;
4036
4037 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
4038 {
4039 /* Set PLT_IFUNC flag for this sym, no GOT entry yet. */
4040 ifunc = update_local_sym_info (abfd, symtab_hdr, r_symndx,
4041 PLT_IFUNC);
4042 if (ifunc == NULL)
4043 return FALSE;
4044
4045 /* STT_GNU_IFUNC symbols must have a PLT entry;
4046 In a non-pie executable even when there are
4047 no plt calls. */
4048 if (!bfd_link_pic (info)
4049 || is_branch_reloc (r_type))
4050 {
4051 bfd_vma addend = 0;
4052 if (r_type == R_PPC_PLTREL24)
4053 {
4054 ppc_elf_tdata (abfd)->makes_plt_call = 1;
4055 if (bfd_link_pic (info))
4056 addend = rel->r_addend;
4057 }
4058 if (!update_plt_info (abfd, ifunc, got2, addend))
4059 return FALSE;
4060 }
4061 }
4062 }
4063
4064 if (!htab->is_vxworks
4065 && is_branch_reloc (r_type)
4066 && h != NULL
4067 && h == tga)
4068 {
4069 if (rel != relocs
4070 && (ELF32_R_TYPE (rel[-1].r_info) == R_PPC_TLSGD
4071 || ELF32_R_TYPE (rel[-1].r_info) == R_PPC_TLSLD))
4072 /* We have a new-style __tls_get_addr call with a marker
4073 reloc. */
4074 ;
4075 else
4076 /* Mark this section as having an old-style call. */
4077 sec->has_tls_get_addr_call = 1;
4078 }
4079
4080 switch (r_type)
4081 {
4082 case R_PPC_TLSGD:
4083 case R_PPC_TLSLD:
4084 /* These special tls relocs tie a call to __tls_get_addr with
4085 its parameter symbol. */
4086 break;
4087
4088 case R_PPC_GOT_TLSLD16:
4089 case R_PPC_GOT_TLSLD16_LO:
4090 case R_PPC_GOT_TLSLD16_HI:
4091 case R_PPC_GOT_TLSLD16_HA:
4092 tls_type = TLS_TLS | TLS_LD;
4093 goto dogottls;
4094
4095 case R_PPC_GOT_TLSGD16:
4096 case R_PPC_GOT_TLSGD16_LO:
4097 case R_PPC_GOT_TLSGD16_HI:
4098 case R_PPC_GOT_TLSGD16_HA:
4099 tls_type = TLS_TLS | TLS_GD;
4100 goto dogottls;
4101
4102 case R_PPC_GOT_TPREL16:
4103 case R_PPC_GOT_TPREL16_LO:
4104 case R_PPC_GOT_TPREL16_HI:
4105 case R_PPC_GOT_TPREL16_HA:
4106 if (bfd_link_dll (info))
4107 info->flags |= DF_STATIC_TLS;
4108 tls_type = TLS_TLS | TLS_TPREL;
4109 goto dogottls;
4110
4111 case R_PPC_GOT_DTPREL16:
4112 case R_PPC_GOT_DTPREL16_LO:
4113 case R_PPC_GOT_DTPREL16_HI:
4114 case R_PPC_GOT_DTPREL16_HA:
4115 tls_type = TLS_TLS | TLS_DTPREL;
4116 dogottls:
4117 sec->has_tls_reloc = 1;
4118 /* Fall through. */
4119
4120 /* GOT16 relocations */
4121 case R_PPC_GOT16:
4122 case R_PPC_GOT16_LO:
4123 case R_PPC_GOT16_HI:
4124 case R_PPC_GOT16_HA:
4125 /* This symbol requires a global offset table entry. */
4126 if (htab->elf.sgot == NULL)
4127 {
4128 if (htab->elf.dynobj == NULL)
4129 htab->elf.dynobj = abfd;
4130 if (!ppc_elf_create_got (htab->elf.dynobj, info))
4131 return FALSE;
4132 }
4133 if (h != NULL)
4134 {
4135 h->got.refcount += 1;
4136 ppc_elf_hash_entry (h)->tls_mask |= tls_type;
4137 }
4138 else
4139 /* This is a global offset table entry for a local symbol. */
4140 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, tls_type))
4141 return FALSE;
4142
4143 /* We may also need a plt entry if the symbol turns out to be
4144 an ifunc. */
4145 if (h != NULL && !bfd_link_pic (info))
4146 {
4147 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
4148 return FALSE;
4149 }
4150 break;
4151
4152 /* Indirect .sdata relocation. */
4153 case R_PPC_EMB_SDAI16:
4154 if (bfd_link_pic (info))
4155 {
4156 bad_shared_reloc (abfd, r_type);
4157 return FALSE;
4158 }
4159 htab->sdata[0].sym->ref_regular = 1;
4160 if (!elf_allocate_pointer_linker_section (abfd, &htab->sdata[0],
4161 h, rel))
4162 return FALSE;
4163 if (h != NULL)
4164 {
4165 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4166 h->non_got_ref = TRUE;
4167 }
4168 break;
4169
4170 /* Indirect .sdata2 relocation. */
4171 case R_PPC_EMB_SDA2I16:
4172 if (bfd_link_pic (info))
4173 {
4174 bad_shared_reloc (abfd, r_type);
4175 return FALSE;
4176 }
4177 htab->sdata[1].sym->ref_regular = 1;
4178 if (!elf_allocate_pointer_linker_section (abfd, &htab->sdata[1],
4179 h, rel))
4180 return FALSE;
4181 if (h != NULL)
4182 {
4183 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4184 h->non_got_ref = TRUE;
4185 }
4186 break;
4187
4188 case R_PPC_SDAREL16:
4189 htab->sdata[0].sym->ref_regular = 1;
4190 /* Fall through. */
4191
4192 case R_PPC_VLE_SDAREL_LO16A:
4193 case R_PPC_VLE_SDAREL_LO16D:
4194 case R_PPC_VLE_SDAREL_HI16A:
4195 case R_PPC_VLE_SDAREL_HI16D:
4196 case R_PPC_VLE_SDAREL_HA16A:
4197 case R_PPC_VLE_SDAREL_HA16D:
4198 if (h != NULL)
4199 {
4200 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4201 h->non_got_ref = TRUE;
4202 }
4203 break;
4204
4205 case R_PPC_VLE_REL8:
4206 case R_PPC_VLE_REL15:
4207 case R_PPC_VLE_REL24:
4208 case R_PPC_VLE_LO16A:
4209 case R_PPC_VLE_LO16D:
4210 case R_PPC_VLE_HI16A:
4211 case R_PPC_VLE_HI16D:
4212 case R_PPC_VLE_HA16A:
4213 case R_PPC_VLE_HA16D:
4214 case R_PPC_VLE_ADDR20:
4215 break;
4216
4217 case R_PPC_EMB_SDA2REL:
4218 if (bfd_link_pic (info))
4219 {
4220 bad_shared_reloc (abfd, r_type);
4221 return FALSE;
4222 }
4223 htab->sdata[1].sym->ref_regular = 1;
4224 if (h != NULL)
4225 {
4226 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4227 h->non_got_ref = TRUE;
4228 }
4229 break;
4230
4231 case R_PPC_VLE_SDA21_LO:
4232 case R_PPC_VLE_SDA21:
4233 case R_PPC_EMB_SDA21:
4234 case R_PPC_EMB_RELSDA:
4235 if (bfd_link_pic (info))
4236 {
4237 bad_shared_reloc (abfd, r_type);
4238 return FALSE;
4239 }
4240 if (h != NULL)
4241 {
4242 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4243 h->non_got_ref = TRUE;
4244 }
4245 break;
4246
4247 case R_PPC_EMB_NADDR32:
4248 case R_PPC_EMB_NADDR16:
4249 case R_PPC_EMB_NADDR16_LO:
4250 case R_PPC_EMB_NADDR16_HI:
4251 case R_PPC_EMB_NADDR16_HA:
4252 if (bfd_link_pic (info))
4253 {
4254 bad_shared_reloc (abfd, r_type);
4255 return FALSE;
4256 }
4257 if (h != NULL)
4258 h->non_got_ref = TRUE;
4259 break;
4260
4261 case R_PPC_PLTREL24:
4262 if (h == NULL)
4263 break;
4264 /* Fall through */
4265 case R_PPC_PLT32:
4266 case R_PPC_PLTREL32:
4267 case R_PPC_PLT16_LO:
4268 case R_PPC_PLT16_HI:
4269 case R_PPC_PLT16_HA:
4270 #ifdef DEBUG
4271 fprintf (stderr, "Reloc requires a PLT entry\n");
4272 #endif
4273 /* This symbol requires a procedure linkage table entry. */
4274 if (h == NULL)
4275 {
4276 if (ifunc == NULL)
4277 {
4278 /* It does not make sense to have a procedure linkage
4279 table entry for a non-ifunc local symbol. */
4280 info->callbacks->einfo
4281 /* xgettext:c-format */
4282 (_("%H: %s reloc against local symbol\n"),
4283 abfd, sec, rel->r_offset,
4284 ppc_elf_howto_table[r_type]->name);
4285 bfd_set_error (bfd_error_bad_value);
4286 return FALSE;
4287 }
4288 }
4289 else
4290 {
4291 bfd_vma addend = 0;
4292
4293 if (r_type == R_PPC_PLTREL24)
4294 {
4295 ppc_elf_tdata (abfd)->makes_plt_call = 1;
4296 if (bfd_link_pic (info))
4297 addend = rel->r_addend;
4298 }
4299 h->needs_plt = 1;
4300 if (!update_plt_info (abfd, &h->plt.plist, got2, addend))
4301 return FALSE;
4302 }
4303 break;
4304
4305 /* The following relocations don't need to propagate the
4306 relocation if linking a shared object since they are
4307 section relative. */
4308 case R_PPC_SECTOFF:
4309 case R_PPC_SECTOFF_LO:
4310 case R_PPC_SECTOFF_HI:
4311 case R_PPC_SECTOFF_HA:
4312 case R_PPC_DTPREL16:
4313 case R_PPC_DTPREL16_LO:
4314 case R_PPC_DTPREL16_HI:
4315 case R_PPC_DTPREL16_HA:
4316 case R_PPC_TOC16:
4317 break;
4318
4319 case R_PPC_REL16:
4320 case R_PPC_REL16_LO:
4321 case R_PPC_REL16_HI:
4322 case R_PPC_REL16_HA:
4323 case R_PPC_REL16DX_HA:
4324 ppc_elf_tdata (abfd)->has_rel16 = 1;
4325 break;
4326
4327 /* These are just markers. */
4328 case R_PPC_TLS:
4329 case R_PPC_EMB_MRKREF:
4330 case R_PPC_NONE:
4331 case R_PPC_max:
4332 case R_PPC_RELAX:
4333 case R_PPC_RELAX_PLT:
4334 case R_PPC_RELAX_PLTREL24:
4335 case R_PPC_16DX_HA:
4336 break;
4337
4338 /* These should only appear in dynamic objects. */
4339 case R_PPC_COPY:
4340 case R_PPC_GLOB_DAT:
4341 case R_PPC_JMP_SLOT:
4342 case R_PPC_RELATIVE:
4343 case R_PPC_IRELATIVE:
4344 break;
4345
4346 /* These aren't handled yet. We'll report an error later. */
4347 case R_PPC_ADDR30:
4348 case R_PPC_EMB_RELSEC16:
4349 case R_PPC_EMB_RELST_LO:
4350 case R_PPC_EMB_RELST_HI:
4351 case R_PPC_EMB_RELST_HA:
4352 case R_PPC_EMB_BIT_FLD:
4353 break;
4354
4355 /* This refers only to functions defined in the shared library. */
4356 case R_PPC_LOCAL24PC:
4357 if (h != NULL && h == htab->elf.hgot && htab->plt_type == PLT_UNSET)
4358 {
4359 htab->plt_type = PLT_OLD;
4360 htab->old_bfd = abfd;
4361 }
4362 if (h != NULL && h->type == STT_GNU_IFUNC)
4363 {
4364 h->needs_plt = 1;
4365 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
4366 return FALSE;
4367 }
4368 break;
4369
4370 /* This relocation describes the C++ object vtable hierarchy.
4371 Reconstruct it for later use during GC. */
4372 case R_PPC_GNU_VTINHERIT:
4373 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
4374 return FALSE;
4375 break;
4376
4377 /* This relocation describes which C++ vtable entries are actually
4378 used. Record for later use during GC. */
4379 case R_PPC_GNU_VTENTRY:
4380 BFD_ASSERT (h != NULL);
4381 if (h != NULL
4382 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
4383 return FALSE;
4384 break;
4385
4386 /* We shouldn't really be seeing TPREL32. */
4387 case R_PPC_TPREL32:
4388 case R_PPC_TPREL16:
4389 case R_PPC_TPREL16_LO:
4390 case R_PPC_TPREL16_HI:
4391 case R_PPC_TPREL16_HA:
4392 if (bfd_link_dll (info))
4393 info->flags |= DF_STATIC_TLS;
4394 goto dodyn;
4395
4396 /* Nor these. */
4397 case R_PPC_DTPMOD32:
4398 case R_PPC_DTPREL32:
4399 goto dodyn;
4400
4401 case R_PPC_REL32:
4402 if (h == NULL
4403 && got2 != NULL
4404 && (sec->flags & SEC_CODE) != 0
4405 && bfd_link_pic (info)
4406 && htab->plt_type == PLT_UNSET)
4407 {
4408 /* Old -fPIC gcc code has .long LCTOC1-LCFx just before
4409 the start of a function, which assembles to a REL32
4410 reference to .got2. If we detect one of these, then
4411 force the old PLT layout because the linker cannot
4412 reliably deduce the GOT pointer value needed for
4413 PLT call stubs. */
4414 asection *s;
4415 Elf_Internal_Sym *isym;
4416
4417 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
4418 abfd, r_symndx);
4419 if (isym == NULL)
4420 return FALSE;
4421
4422 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
4423 if (s == got2)
4424 {
4425 htab->plt_type = PLT_OLD;
4426 htab->old_bfd = abfd;
4427 }
4428 }
4429 if (h == NULL || h == htab->elf.hgot)
4430 break;
4431 /* fall through */
4432
4433 case R_PPC_ADDR32:
4434 case R_PPC_ADDR16:
4435 case R_PPC_ADDR16_LO:
4436 case R_PPC_ADDR16_HI:
4437 case R_PPC_ADDR16_HA:
4438 case R_PPC_UADDR32:
4439 case R_PPC_UADDR16:
4440 if (h != NULL && !bfd_link_pic (info))
4441 {
4442 /* We may need a plt entry if the symbol turns out to be
4443 a function defined in a dynamic object. */
4444 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
4445 return FALSE;
4446
4447 /* We may need a copy reloc too. */
4448 h->non_got_ref = 1;
4449 h->pointer_equality_needed = 1;
4450 if (r_type == R_PPC_ADDR16_HA)
4451 ppc_elf_hash_entry (h)->has_addr16_ha = 1;
4452 if (r_type == R_PPC_ADDR16_LO)
4453 ppc_elf_hash_entry (h)->has_addr16_lo = 1;
4454 }
4455 goto dodyn;
4456
4457 case R_PPC_REL24:
4458 case R_PPC_REL14:
4459 case R_PPC_REL14_BRTAKEN:
4460 case R_PPC_REL14_BRNTAKEN:
4461 if (h == NULL)
4462 break;
4463 if (h == htab->elf.hgot)
4464 {
4465 if (htab->plt_type == PLT_UNSET)
4466 {
4467 htab->plt_type = PLT_OLD;
4468 htab->old_bfd = abfd;
4469 }
4470 break;
4471 }
4472 /* fall through */
4473
4474 case R_PPC_ADDR24:
4475 case R_PPC_ADDR14:
4476 case R_PPC_ADDR14_BRTAKEN:
4477 case R_PPC_ADDR14_BRNTAKEN:
4478 if (h != NULL && !bfd_link_pic (info))
4479 {
4480 /* We may need a plt entry if the symbol turns out to be
4481 a function defined in a dynamic object. */
4482 h->needs_plt = 1;
4483 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
4484 return FALSE;
4485 break;
4486 }
4487
4488 dodyn:
4489 /* If we are creating a shared library, and this is a reloc
4490 against a global symbol, or a non PC relative reloc
4491 against a local symbol, then we need to copy the reloc
4492 into the shared library. However, if we are linking with
4493 -Bsymbolic, we do not need to copy a reloc against a
4494 global symbol which is defined in an object we are
4495 including in the link (i.e., DEF_REGULAR is set). At
4496 this point we have not seen all the input files, so it is
4497 possible that DEF_REGULAR is not set now but will be set
4498 later (it is never cleared). In case of a weak definition,
4499 DEF_REGULAR may be cleared later by a strong definition in
4500 a shared library. We account for that possibility below by
4501 storing information in the dyn_relocs field of the hash
4502 table entry. A similar situation occurs when creating
4503 shared libraries and symbol visibility changes render the
4504 symbol local.
4505
4506 If on the other hand, we are creating an executable, we
4507 may need to keep relocations for symbols satisfied by a
4508 dynamic library if we manage to avoid copy relocs for the
4509 symbol. */
4510 if ((bfd_link_pic (info)
4511 && (must_be_dyn_reloc (info, r_type)
4512 || (h != NULL
4513 && (!SYMBOLIC_BIND (info, h)
4514 || h->root.type == bfd_link_hash_defweak
4515 || !h->def_regular))))
4516 || (ELIMINATE_COPY_RELOCS
4517 && !bfd_link_pic (info)
4518 && h != NULL
4519 && (h->root.type == bfd_link_hash_defweak
4520 || !h->def_regular)))
4521 {
4522 #ifdef DEBUG
4523 fprintf (stderr,
4524 "ppc_elf_check_relocs needs to "
4525 "create relocation for %s\n",
4526 (h && h->root.root.string
4527 ? h->root.root.string : "<unknown>"));
4528 #endif
4529 if (sreloc == NULL)
4530 {
4531 if (htab->elf.dynobj == NULL)
4532 htab->elf.dynobj = abfd;
4533
4534 sreloc = _bfd_elf_make_dynamic_reloc_section
4535 (sec, htab->elf.dynobj, 2, abfd, /*rela?*/ TRUE);
4536
4537 if (sreloc == NULL)
4538 return FALSE;
4539 }
4540
4541 /* If this is a global symbol, we count the number of
4542 relocations we need for this symbol. */
4543 if (h != NULL)
4544 {
4545 struct elf_dyn_relocs *p;
4546 struct elf_dyn_relocs **rel_head;
4547
4548 rel_head = &ppc_elf_hash_entry (h)->dyn_relocs;
4549 p = *rel_head;
4550 if (p == NULL || p->sec != sec)
4551 {
4552 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
4553 if (p == NULL)
4554 return FALSE;
4555 p->next = *rel_head;
4556 *rel_head = p;
4557 p->sec = sec;
4558 p->count = 0;
4559 p->pc_count = 0;
4560 }
4561 p->count += 1;
4562 if (!must_be_dyn_reloc (info, r_type))
4563 p->pc_count += 1;
4564 }
4565 else
4566 {
4567 /* Track dynamic relocs needed for local syms too.
4568 We really need local syms available to do this
4569 easily. Oh well. */
4570 struct ppc_dyn_relocs *p;
4571 struct ppc_dyn_relocs **rel_head;
4572 bfd_boolean is_ifunc;
4573 asection *s;
4574 void *vpp;
4575 Elf_Internal_Sym *isym;
4576
4577 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
4578 abfd, r_symndx);
4579 if (isym == NULL)
4580 return FALSE;
4581
4582 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
4583 if (s == NULL)
4584 s = sec;
4585
4586 vpp = &elf_section_data (s)->local_dynrel;
4587 rel_head = (struct ppc_dyn_relocs **) vpp;
4588 is_ifunc = ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC;
4589 p = *rel_head;
4590 if (p != NULL && p->sec == sec && p->ifunc != is_ifunc)
4591 p = p->next;
4592 if (p == NULL || p->sec != sec || p->ifunc != is_ifunc)
4593 {
4594 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
4595 if (p == NULL)
4596 return FALSE;
4597 p->next = *rel_head;
4598 *rel_head = p;
4599 p->sec = sec;
4600 p->ifunc = is_ifunc;
4601 p->count = 0;
4602 }
4603 p->count += 1;
4604 }
4605 }
4606
4607 break;
4608 }
4609 }
4610
4611 return TRUE;
4612 }
4613 \f
4614 /* Warn for conflicting Tag_GNU_Power_ABI_FP attributes between IBFD
4615 and OBFD, and merge non-conflicting ones. */
4616 void
4617 _bfd_elf_ppc_merge_fp_attributes (bfd *ibfd, struct bfd_link_info *info)
4618 {
4619 bfd *obfd = info->output_bfd;
4620 obj_attribute *in_attr, *in_attrs;
4621 obj_attribute *out_attr, *out_attrs;
4622
4623 in_attrs = elf_known_obj_attributes (ibfd)[OBJ_ATTR_GNU];
4624 out_attrs = elf_known_obj_attributes (obfd)[OBJ_ATTR_GNU];
4625
4626 in_attr = &in_attrs[Tag_GNU_Power_ABI_FP];
4627 out_attr = &out_attrs[Tag_GNU_Power_ABI_FP];
4628
4629 if (in_attr->i != out_attr->i)
4630 {
4631 int in_fp = in_attr->i & 3;
4632 int out_fp = out_attr->i & 3;
4633
4634 if (in_fp == 0)
4635 ;
4636 else if (out_fp == 0)
4637 {
4638 out_attr->type = 1;
4639 out_attr->i ^= in_fp;
4640 }
4641 else if (out_fp != 2 && in_fp == 2)
4642 _bfd_error_handler
4643 /* xgettext:c-format */
4644 (_("warning: %pB uses hard float, %pB uses soft float"), obfd, ibfd);
4645 else if (out_fp == 2 && in_fp != 2)
4646 _bfd_error_handler
4647 /* xgettext:c-format */
4648 (_("warning: %pB uses hard float, %pB uses soft float"), ibfd, obfd);
4649 else if (out_fp == 1 && in_fp == 3)
4650 _bfd_error_handler
4651 /* xgettext:c-format */
4652 (_("warning: %pB uses double-precision hard float, "
4653 "%pB uses single-precision hard float"), obfd, ibfd);
4654 else if (out_fp == 3 && in_fp == 1)
4655 _bfd_error_handler
4656 /* xgettext:c-format */
4657 (_("warning: %pB uses double-precision hard float, "
4658 "%pB uses single-precision hard float"), ibfd, obfd);
4659
4660 in_fp = in_attr->i & 0xc;
4661 out_fp = out_attr->i & 0xc;
4662 if (in_fp == 0)
4663 ;
4664 else if (out_fp == 0)
4665 {
4666 out_attr->type = 1;
4667 out_attr->i ^= in_fp;
4668 }
4669 else if (out_fp != 2 * 4 && in_fp == 2 * 4)
4670 _bfd_error_handler
4671 /* xgettext:c-format */
4672 (_("warning: %pB uses 64-bit long double, "
4673 "%pB uses 128-bit long double"), ibfd, obfd);
4674 else if (in_fp != 2 * 4 && out_fp == 2 * 4)
4675 _bfd_error_handler
4676 /* xgettext:c-format */
4677 (_("warning: %pB uses 64-bit long double, "
4678 "%pB uses 128-bit long double"), obfd, ibfd);
4679 else if (out_fp == 1 * 4 && in_fp == 3 * 4)
4680 _bfd_error_handler
4681 /* xgettext:c-format */
4682 (_("warning: %pB uses IBM long double, "
4683 "%pB uses IEEE long double"), ibfd, obfd);
4684 else if (out_fp == 3 * 4 && in_fp == 1 * 4)
4685 _bfd_error_handler
4686 /* xgettext:c-format */
4687 (_("warning: %pB uses IBM long double, "
4688 "%pB uses IEEE long double"), obfd, ibfd);
4689 }
4690 }
4691
4692 /* Merge object attributes from IBFD into OBFD. Warn if
4693 there are conflicting attributes. */
4694 static bfd_boolean
4695 ppc_elf_merge_obj_attributes (bfd *ibfd, struct bfd_link_info *info)
4696 {
4697 bfd *obfd;
4698 obj_attribute *in_attr, *in_attrs;
4699 obj_attribute *out_attr, *out_attrs;
4700
4701 _bfd_elf_ppc_merge_fp_attributes (ibfd, info);
4702
4703 obfd = info->output_bfd;
4704 in_attrs = elf_known_obj_attributes (ibfd)[OBJ_ATTR_GNU];
4705 out_attrs = elf_known_obj_attributes (obfd)[OBJ_ATTR_GNU];
4706
4707 /* Check for conflicting Tag_GNU_Power_ABI_Vector attributes and
4708 merge non-conflicting ones. */
4709 in_attr = &in_attrs[Tag_GNU_Power_ABI_Vector];
4710 out_attr = &out_attrs[Tag_GNU_Power_ABI_Vector];
4711 if (in_attr->i != out_attr->i)
4712 {
4713 int in_vec = in_attr->i & 3;
4714 int out_vec = out_attr->i & 3;
4715
4716 if (in_vec == 0)
4717 ;
4718 else if (out_vec == 0)
4719 {
4720 out_attr->type = 1;
4721 out_attr->i = in_vec;
4722 }
4723 /* For now, allow generic to transition to AltiVec or SPE
4724 without a warning. If GCC marked files with their stack
4725 alignment and used don't-care markings for files which are
4726 not affected by the vector ABI, we could warn about this
4727 case too. */
4728 else if (in_vec == 1)
4729 ;
4730 else if (out_vec == 1)
4731 {
4732 out_attr->type = 1;
4733 out_attr->i = in_vec;
4734 }
4735 else if (out_vec < in_vec)
4736 _bfd_error_handler
4737 /* xgettext:c-format */
4738 (_("warning: %pB uses AltiVec vector ABI, %pB uses SPE vector ABI"),
4739 obfd, ibfd);
4740 else if (out_vec > in_vec)
4741 _bfd_error_handler
4742 /* xgettext:c-format */
4743 (_("warning: %pB uses AltiVec vector ABI, %pB uses SPE vector ABI"),
4744 ibfd, obfd);
4745 }
4746
4747 /* Check for conflicting Tag_GNU_Power_ABI_Struct_Return attributes
4748 and merge non-conflicting ones. */
4749 in_attr = &in_attrs[Tag_GNU_Power_ABI_Struct_Return];
4750 out_attr = &out_attrs[Tag_GNU_Power_ABI_Struct_Return];
4751 if (in_attr->i != out_attr->i)
4752 {
4753 int in_struct = in_attr->i & 3;
4754 int out_struct = out_attr->i & 3;
4755
4756 if (in_struct == 0 || in_struct == 3)
4757 ;
4758 else if (out_struct == 0)
4759 {
4760 out_attr->type = 1;
4761 out_attr->i = in_struct;
4762 }
4763 else if (out_struct < in_struct)
4764 _bfd_error_handler
4765 /* xgettext:c-format */
4766 (_("warning: %pB uses r3/r4 for small structure returns, "
4767 "%pB uses memory"), obfd, ibfd);
4768 else if (out_struct > in_struct)
4769 _bfd_error_handler
4770 /* xgettext:c-format */
4771 (_("warning: %pB uses r3/r4 for small structure returns, "
4772 "%pB uses memory"), ibfd, obfd);
4773 }
4774
4775 /* Merge Tag_compatibility attributes and any common GNU ones. */
4776 _bfd_elf_merge_object_attributes (ibfd, info);
4777
4778 return TRUE;
4779 }
4780
4781 /* Merge backend specific data from an object file to the output
4782 object file when linking. */
4783
4784 static bfd_boolean
4785 ppc_elf_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info)
4786 {
4787 bfd *obfd = info->output_bfd;
4788 flagword old_flags;
4789 flagword new_flags;
4790 bfd_boolean error;
4791
4792 if (!is_ppc_elf (ibfd) || !is_ppc_elf (obfd))
4793 return TRUE;
4794
4795 /* Check if we have the same endianness. */
4796 if (! _bfd_generic_verify_endian_match (ibfd, info))
4797 return FALSE;
4798
4799 if (!ppc_elf_merge_obj_attributes (ibfd, info))
4800 return FALSE;
4801
4802 new_flags = elf_elfheader (ibfd)->e_flags;
4803 old_flags = elf_elfheader (obfd)->e_flags;
4804 if (!elf_flags_init (obfd))
4805 {
4806 /* First call, no flags set. */
4807 elf_flags_init (obfd) = TRUE;
4808 elf_elfheader (obfd)->e_flags = new_flags;
4809 }
4810
4811 /* Compatible flags are ok. */
4812 else if (new_flags == old_flags)
4813 ;
4814
4815 /* Incompatible flags. */
4816 else
4817 {
4818 /* Warn about -mrelocatable mismatch. Allow -mrelocatable-lib
4819 to be linked with either. */
4820 error = FALSE;
4821 if ((new_flags & EF_PPC_RELOCATABLE) != 0
4822 && (old_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0)
4823 {
4824 error = TRUE;
4825 _bfd_error_handler
4826 (_("%pB: compiled with -mrelocatable and linked with "
4827 "modules compiled normally"), ibfd);
4828 }
4829 else if ((new_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0
4830 && (old_flags & EF_PPC_RELOCATABLE) != 0)
4831 {
4832 error = TRUE;
4833 _bfd_error_handler
4834 (_("%pB: compiled normally and linked with "
4835 "modules compiled with -mrelocatable"), ibfd);
4836 }
4837
4838 /* The output is -mrelocatable-lib iff both the input files are. */
4839 if (! (new_flags & EF_PPC_RELOCATABLE_LIB))
4840 elf_elfheader (obfd)->e_flags &= ~EF_PPC_RELOCATABLE_LIB;
4841
4842 /* The output is -mrelocatable iff it can't be -mrelocatable-lib,
4843 but each input file is either -mrelocatable or -mrelocatable-lib. */
4844 if (! (elf_elfheader (obfd)->e_flags & EF_PPC_RELOCATABLE_LIB)
4845 && (new_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE))
4846 && (old_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE)))
4847 elf_elfheader (obfd)->e_flags |= EF_PPC_RELOCATABLE;
4848
4849 /* Do not warn about eabi vs. V.4 mismatch, just or in the bit if
4850 any module uses it. */
4851 elf_elfheader (obfd)->e_flags |= (new_flags & EF_PPC_EMB);
4852
4853 new_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
4854 old_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
4855
4856 /* Warn about any other mismatches. */
4857 if (new_flags != old_flags)
4858 {
4859 error = TRUE;
4860 _bfd_error_handler
4861 /* xgettext:c-format */
4862 (_("%pB: uses different e_flags (%#x) fields "
4863 "than previous modules (%#x)"),
4864 ibfd, new_flags, old_flags);
4865 }
4866
4867 if (error)
4868 {
4869 bfd_set_error (bfd_error_bad_value);
4870 return FALSE;
4871 }
4872 }
4873
4874 return TRUE;
4875 }
4876
4877 static void
4878 ppc_elf_vle_split16 (bfd *input_bfd,
4879 asection *input_section,
4880 unsigned long offset,
4881 bfd_byte *loc,
4882 bfd_vma value,
4883 split16_format_type split16_format,
4884 bfd_boolean fixup)
4885 {
4886 unsigned int insn, opcode, top5;
4887
4888 insn = bfd_get_32 (input_bfd, loc);
4889 opcode = insn & 0xfc00f800;
4890 if (opcode == E_OR2I_INSN
4891 || opcode == E_AND2I_DOT_INSN
4892 || opcode == E_OR2IS_INSN
4893 || opcode == E_LIS_INSN
4894 || opcode == E_AND2IS_DOT_INSN)
4895 {
4896 if (split16_format != split16a_type)
4897 {
4898 if (fixup)
4899 split16_format = split16a_type;
4900 else
4901 _bfd_error_handler
4902 /* xgettext:c-format */
4903 (_("%pB(%pA+0x%lx): expected 16A style relocation on 0x%08x insn"),
4904 input_bfd, input_section, offset, opcode);
4905 }
4906 }
4907 else if (opcode == E_ADD2I_DOT_INSN
4908 || opcode == E_ADD2IS_INSN
4909 || opcode == E_CMP16I_INSN
4910 || opcode == E_MULL2I_INSN
4911 || opcode == E_CMPL16I_INSN
4912 || opcode == E_CMPH16I_INSN
4913 || opcode == E_CMPHL16I_INSN)
4914 {
4915 if (split16_format != split16d_type)
4916 {
4917 if (fixup)
4918 split16_format = split16d_type;
4919 else
4920 _bfd_error_handler
4921 /* xgettext:c-format */
4922 (_("%pB(%pA+0x%lx): expected 16D style relocation on 0x%08x insn"),
4923 input_bfd, input_section, offset, opcode);
4924 }
4925 }
4926 top5 = value & 0xf800;
4927 top5 = top5 << (split16_format == split16a_type ? 5 : 10);
4928 insn &= (split16_format == split16a_type ? ~0x1f07ff : ~0x3e007ff);
4929 insn |= top5;
4930 insn |= value & 0x7ff;
4931 bfd_put_32 (input_bfd, insn, loc);
4932 }
4933
4934 static void
4935 ppc_elf_vle_split20 (bfd *output_bfd, bfd_byte *loc, bfd_vma value)
4936 {
4937 unsigned int insn;
4938
4939 insn = bfd_get_32 (output_bfd, loc);
4940 /* We have an li20 field, bits 17..20, 11..15, 21..31. */
4941 /* Top 4 bits of value to 17..20. */
4942 insn |= (value & 0xf0000) >> 5;
4943 /* Next 5 bits of the value to 11..15. */
4944 insn |= (value & 0xf800) << 5;
4945 /* And the final 11 bits of the value to bits 21 to 31. */
4946 insn |= value & 0x7ff;
4947 bfd_put_32 (output_bfd, insn, loc);
4948 }
4949
4950 \f
4951 /* Choose which PLT scheme to use, and set .plt flags appropriately.
4952 Returns -1 on error, 0 for old PLT, 1 for new PLT. */
4953 int
4954 ppc_elf_select_plt_layout (bfd *output_bfd ATTRIBUTE_UNUSED,
4955 struct bfd_link_info *info)
4956 {
4957 struct ppc_elf_link_hash_table *htab;
4958 flagword flags;
4959
4960 htab = ppc_elf_hash_table (info);
4961
4962 if (htab->plt_type == PLT_UNSET)
4963 {
4964 struct elf_link_hash_entry *h;
4965
4966 if (htab->params->plt_style == PLT_OLD)
4967 htab->plt_type = PLT_OLD;
4968 else if (bfd_link_pic (info)
4969 && htab->elf.dynamic_sections_created
4970 && (h = elf_link_hash_lookup (&htab->elf, "_mcount",
4971 FALSE, FALSE, TRUE)) != NULL
4972 && (h->type == STT_FUNC
4973 || h->needs_plt)
4974 && h->ref_regular
4975 && !(SYMBOL_CALLS_LOCAL (info, h)
4976 || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)))
4977 {
4978 /* Profiling of shared libs (and pies) is not supported with
4979 secure plt, because ppc32 does profiling before a
4980 function prologue and a secure plt pic call stubs needs
4981 r30 to be set up. */
4982 htab->plt_type = PLT_OLD;
4983 }
4984 else
4985 {
4986 bfd *ibfd;
4987 enum ppc_elf_plt_type plt_type = htab->params->plt_style;
4988
4989 /* Look through the reloc flags left by ppc_elf_check_relocs.
4990 Use the old style bss plt if a file makes plt calls
4991 without using the new relocs, and if ld isn't given
4992 --secure-plt and we never see REL16 relocs. */
4993 if (plt_type == PLT_UNSET)
4994 plt_type = PLT_OLD;
4995 for (ibfd = info->input_bfds; ibfd; ibfd = ibfd->link.next)
4996 if (is_ppc_elf (ibfd))
4997 {
4998 if (ppc_elf_tdata (ibfd)->has_rel16)
4999 plt_type = PLT_NEW;
5000 else if (ppc_elf_tdata (ibfd)->makes_plt_call)
5001 {
5002 plt_type = PLT_OLD;
5003 htab->old_bfd = ibfd;
5004 break;
5005 }
5006 }
5007 htab->plt_type = plt_type;
5008 }
5009 }
5010 if (htab->plt_type == PLT_OLD && htab->params->plt_style == PLT_NEW)
5011 {
5012 if (htab->old_bfd != NULL)
5013 _bfd_error_handler (_("bss-plt forced due to %pB"), htab->old_bfd);
5014 else
5015 _bfd_error_handler (_("bss-plt forced by profiling"));
5016 }
5017
5018 BFD_ASSERT (htab->plt_type != PLT_VXWORKS);
5019
5020 if (htab->plt_type == PLT_NEW)
5021 {
5022 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
5023 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
5024
5025 /* The new PLT is a loaded section. */
5026 if (htab->elf.splt != NULL
5027 && !bfd_set_section_flags (htab->elf.dynobj, htab->elf.splt, flags))
5028 return -1;
5029
5030 /* The new GOT is not executable. */
5031 if (htab->elf.sgot != NULL
5032 && !bfd_set_section_flags (htab->elf.dynobj, htab->elf.sgot, flags))
5033 return -1;
5034 }
5035 else
5036 {
5037 /* Stop an unused .glink section from affecting .text alignment. */
5038 if (htab->glink != NULL
5039 && !bfd_set_section_alignment (htab->elf.dynobj, htab->glink, 0))
5040 return -1;
5041 }
5042 return htab->plt_type == PLT_NEW;
5043 }
5044 \f
5045 /* Return the section that should be marked against GC for a given
5046 relocation. */
5047
5048 static asection *
5049 ppc_elf_gc_mark_hook (asection *sec,
5050 struct bfd_link_info *info,
5051 Elf_Internal_Rela *rel,
5052 struct elf_link_hash_entry *h,
5053 Elf_Internal_Sym *sym)
5054 {
5055 if (h != NULL)
5056 switch (ELF32_R_TYPE (rel->r_info))
5057 {
5058 case R_PPC_GNU_VTINHERIT:
5059 case R_PPC_GNU_VTENTRY:
5060 return NULL;
5061 }
5062
5063 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
5064 }
5065 \f
5066 /* Set plt output section type, htab->tls_get_addr, and call the
5067 generic ELF tls_setup function. */
5068
5069 asection *
5070 ppc_elf_tls_setup (bfd *obfd, struct bfd_link_info *info)
5071 {
5072 struct ppc_elf_link_hash_table *htab;
5073
5074 htab = ppc_elf_hash_table (info);
5075 htab->tls_get_addr = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
5076 FALSE, FALSE, TRUE);
5077 if (htab->plt_type != PLT_NEW)
5078 htab->params->no_tls_get_addr_opt = TRUE;
5079
5080 if (!htab->params->no_tls_get_addr_opt)
5081 {
5082 struct elf_link_hash_entry *opt, *tga;
5083 opt = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_opt",
5084 FALSE, FALSE, TRUE);
5085 if (opt != NULL
5086 && (opt->root.type == bfd_link_hash_defined
5087 || opt->root.type == bfd_link_hash_defweak))
5088 {
5089 /* If glibc supports an optimized __tls_get_addr call stub,
5090 signalled by the presence of __tls_get_addr_opt, and we'll
5091 be calling __tls_get_addr via a plt call stub, then
5092 make __tls_get_addr point to __tls_get_addr_opt. */
5093 tga = htab->tls_get_addr;
5094 if (htab->elf.dynamic_sections_created
5095 && tga != NULL
5096 && (tga->type == STT_FUNC
5097 || tga->needs_plt)
5098 && !(SYMBOL_CALLS_LOCAL (info, tga)
5099 || UNDEFWEAK_NO_DYNAMIC_RELOC (info, tga)))
5100 {
5101 struct plt_entry *ent;
5102 for (ent = tga->plt.plist; ent != NULL; ent = ent->next)
5103 if (ent->plt.refcount > 0)
5104 break;
5105 if (ent != NULL)
5106 {
5107 tga->root.type = bfd_link_hash_indirect;
5108 tga->root.u.i.link = &opt->root;
5109 ppc_elf_copy_indirect_symbol (info, opt, tga);
5110 opt->mark = 1;
5111 if (opt->dynindx != -1)
5112 {
5113 /* Use __tls_get_addr_opt in dynamic relocations. */
5114 opt->dynindx = -1;
5115 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
5116 opt->dynstr_index);
5117 if (!bfd_elf_link_record_dynamic_symbol (info, opt))
5118 return FALSE;
5119 }
5120 htab->tls_get_addr = opt;
5121 }
5122 }
5123 }
5124 else
5125 htab->params->no_tls_get_addr_opt = TRUE;
5126 }
5127 if (htab->plt_type == PLT_NEW
5128 && htab->elf.splt != NULL
5129 && htab->elf.splt->output_section != NULL)
5130 {
5131 elf_section_type (htab->elf.splt->output_section) = SHT_PROGBITS;
5132 elf_section_flags (htab->elf.splt->output_section) = SHF_ALLOC + SHF_WRITE;
5133 }
5134
5135 return _bfd_elf_tls_setup (obfd, info);
5136 }
5137
5138 /* Return TRUE iff REL is a branch reloc with a global symbol matching
5139 HASH. */
5140
5141 static bfd_boolean
5142 branch_reloc_hash_match (const bfd *ibfd,
5143 const Elf_Internal_Rela *rel,
5144 const struct elf_link_hash_entry *hash)
5145 {
5146 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
5147 enum elf_ppc_reloc_type r_type = ELF32_R_TYPE (rel->r_info);
5148 unsigned int r_symndx = ELF32_R_SYM (rel->r_info);
5149
5150 if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type))
5151 {
5152 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
5153 struct elf_link_hash_entry *h;
5154
5155 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5156 while (h->root.type == bfd_link_hash_indirect
5157 || h->root.type == bfd_link_hash_warning)
5158 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5159 if (h == hash)
5160 return TRUE;
5161 }
5162 return FALSE;
5163 }
5164
5165 /* Run through all the TLS relocs looking for optimization
5166 opportunities. */
5167
5168 bfd_boolean
5169 ppc_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED,
5170 struct bfd_link_info *info)
5171 {
5172 bfd *ibfd;
5173 asection *sec;
5174 struct ppc_elf_link_hash_table *htab;
5175 int pass;
5176
5177 if (!bfd_link_executable (info))
5178 return TRUE;
5179
5180 htab = ppc_elf_hash_table (info);
5181 if (htab == NULL)
5182 return FALSE;
5183
5184 /* Make two passes through the relocs. First time check that tls
5185 relocs involved in setting up a tls_get_addr call are indeed
5186 followed by such a call. If they are not, don't do any tls
5187 optimization. On the second pass twiddle tls_mask flags to
5188 notify relocate_section that optimization can be done, and
5189 adjust got and plt refcounts. */
5190 for (pass = 0; pass < 2; ++pass)
5191 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
5192 {
5193 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
5194 asection *got2 = bfd_get_section_by_name (ibfd, ".got2");
5195
5196 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
5197 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
5198 {
5199 Elf_Internal_Rela *relstart, *rel, *relend;
5200 int expecting_tls_get_addr = 0;
5201
5202 /* Read the relocations. */
5203 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
5204 info->keep_memory);
5205 if (relstart == NULL)
5206 return FALSE;
5207
5208 relend = relstart + sec->reloc_count;
5209 for (rel = relstart; rel < relend; rel++)
5210 {
5211 enum elf_ppc_reloc_type r_type;
5212 unsigned long r_symndx;
5213 struct elf_link_hash_entry *h = NULL;
5214 unsigned char *tls_mask;
5215 char tls_set, tls_clear;
5216 bfd_boolean is_local;
5217 bfd_signed_vma *got_count;
5218
5219 r_symndx = ELF32_R_SYM (rel->r_info);
5220 if (r_symndx >= symtab_hdr->sh_info)
5221 {
5222 struct elf_link_hash_entry **sym_hashes;
5223
5224 sym_hashes = elf_sym_hashes (ibfd);
5225 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5226 while (h->root.type == bfd_link_hash_indirect
5227 || h->root.type == bfd_link_hash_warning)
5228 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5229 }
5230
5231 is_local = FALSE;
5232 if (h == NULL
5233 || !h->def_dynamic)
5234 is_local = TRUE;
5235
5236 r_type = ELF32_R_TYPE (rel->r_info);
5237 /* If this section has old-style __tls_get_addr calls
5238 without marker relocs, then check that each
5239 __tls_get_addr call reloc is preceded by a reloc
5240 that conceivably belongs to the __tls_get_addr arg
5241 setup insn. If we don't find matching arg setup
5242 relocs, don't do any tls optimization. */
5243 if (pass == 0
5244 && sec->has_tls_get_addr_call
5245 && h != NULL
5246 && h == htab->tls_get_addr
5247 && !expecting_tls_get_addr
5248 && is_branch_reloc (r_type))
5249 {
5250 info->callbacks->minfo ("%H __tls_get_addr lost arg, "
5251 "TLS optimization disabled\n",
5252 ibfd, sec, rel->r_offset);
5253 if (elf_section_data (sec)->relocs != relstart)
5254 free (relstart);
5255 return TRUE;
5256 }
5257
5258 expecting_tls_get_addr = 0;
5259 switch (r_type)
5260 {
5261 case R_PPC_GOT_TLSLD16:
5262 case R_PPC_GOT_TLSLD16_LO:
5263 expecting_tls_get_addr = 1;
5264 /* Fall through. */
5265
5266 case R_PPC_GOT_TLSLD16_HI:
5267 case R_PPC_GOT_TLSLD16_HA:
5268 /* These relocs should never be against a symbol
5269 defined in a shared lib. Leave them alone if
5270 that turns out to be the case. */
5271 if (!is_local)
5272 continue;
5273
5274 /* LD -> LE */
5275 tls_set = 0;
5276 tls_clear = TLS_LD;
5277 break;
5278
5279 case R_PPC_GOT_TLSGD16:
5280 case R_PPC_GOT_TLSGD16_LO:
5281 expecting_tls_get_addr = 1;
5282 /* Fall through. */
5283
5284 case R_PPC_GOT_TLSGD16_HI:
5285 case R_PPC_GOT_TLSGD16_HA:
5286 if (is_local)
5287 /* GD -> LE */
5288 tls_set = 0;
5289 else
5290 /* GD -> IE */
5291 tls_set = TLS_TLS | TLS_TPRELGD;
5292 tls_clear = TLS_GD;
5293 break;
5294
5295 case R_PPC_GOT_TPREL16:
5296 case R_PPC_GOT_TPREL16_LO:
5297 case R_PPC_GOT_TPREL16_HI:
5298 case R_PPC_GOT_TPREL16_HA:
5299 if (is_local)
5300 {
5301 /* IE -> LE */
5302 tls_set = 0;
5303 tls_clear = TLS_TPREL;
5304 break;
5305 }
5306 else
5307 continue;
5308
5309 case R_PPC_TLSGD:
5310 case R_PPC_TLSLD:
5311 expecting_tls_get_addr = 2;
5312 tls_set = 0;
5313 tls_clear = 0;
5314 break;
5315
5316 default:
5317 continue;
5318 }
5319
5320 if (pass == 0)
5321 {
5322 if (!expecting_tls_get_addr
5323 || (expecting_tls_get_addr == 1
5324 && !sec->has_tls_get_addr_call))
5325 continue;
5326
5327 if (rel + 1 < relend
5328 && branch_reloc_hash_match (ibfd, rel + 1,
5329 htab->tls_get_addr))
5330 continue;
5331
5332 /* Uh oh, we didn't find the expected call. We
5333 could just mark this symbol to exclude it
5334 from tls optimization but it's safer to skip
5335 the entire optimization. */
5336 info->callbacks->minfo (_("%H arg lost __tls_get_addr, "
5337 "TLS optimization disabled\n"),
5338 ibfd, sec, rel->r_offset);
5339 if (elf_section_data (sec)->relocs != relstart)
5340 free (relstart);
5341 return TRUE;
5342 }
5343
5344 if (expecting_tls_get_addr)
5345 {
5346 struct plt_entry *ent;
5347 bfd_vma addend = 0;
5348
5349 if (bfd_link_pic (info)
5350 && ELF32_R_TYPE (rel[1].r_info) == R_PPC_PLTREL24)
5351 addend = rel[1].r_addend;
5352 ent = find_plt_ent (&htab->tls_get_addr->plt.plist,
5353 got2, addend);
5354 if (ent != NULL && ent->plt.refcount > 0)
5355 ent->plt.refcount -= 1;
5356
5357 if (expecting_tls_get_addr == 2)
5358 continue;
5359 }
5360
5361 if (h != NULL)
5362 {
5363 tls_mask = &ppc_elf_hash_entry (h)->tls_mask;
5364 got_count = &h->got.refcount;
5365 }
5366 else
5367 {
5368 bfd_signed_vma *lgot_refs;
5369 struct plt_entry **local_plt;
5370 unsigned char *lgot_masks;
5371
5372 lgot_refs = elf_local_got_refcounts (ibfd);
5373 if (lgot_refs == NULL)
5374 abort ();
5375 local_plt = (struct plt_entry **)
5376 (lgot_refs + symtab_hdr->sh_info);
5377 lgot_masks = (unsigned char *)
5378 (local_plt + symtab_hdr->sh_info);
5379 tls_mask = &lgot_masks[r_symndx];
5380 got_count = &lgot_refs[r_symndx];
5381 }
5382
5383 if (tls_set == 0)
5384 {
5385 /* We managed to get rid of a got entry. */
5386 if (*got_count > 0)
5387 *got_count -= 1;
5388 }
5389
5390 *tls_mask |= tls_set;
5391 *tls_mask &= ~tls_clear;
5392 }
5393
5394 if (elf_section_data (sec)->relocs != relstart)
5395 free (relstart);
5396 }
5397 }
5398 htab->do_tls_opt = 1;
5399 return TRUE;
5400 }
5401 \f
5402 /* Find dynamic relocs for H that apply to read-only sections. */
5403
5404 static asection *
5405 readonly_dynrelocs (struct elf_link_hash_entry *h)
5406 {
5407 struct elf_dyn_relocs *p;
5408
5409 for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next)
5410 {
5411 asection *s = p->sec->output_section;
5412
5413 if (s != NULL && (s->flags & SEC_READONLY) != 0)
5414 return p->sec;
5415 }
5416 return NULL;
5417 }
5418
5419 /* Return true if we have dynamic relocs against H or any of its weak
5420 aliases, that apply to read-only sections. Cannot be used after
5421 size_dynamic_sections. */
5422
5423 static bfd_boolean
5424 alias_readonly_dynrelocs (struct elf_link_hash_entry *h)
5425 {
5426 struct ppc_elf_link_hash_entry *eh = ppc_elf_hash_entry (h);
5427 do
5428 {
5429 if (readonly_dynrelocs (&eh->elf))
5430 return TRUE;
5431 eh = ppc_elf_hash_entry (eh->elf.u.alias);
5432 } while (eh != NULL && &eh->elf != h);
5433
5434 return FALSE;
5435 }
5436
5437 /* Return whether H has pc-relative dynamic relocs. */
5438
5439 static bfd_boolean
5440 pc_dynrelocs (struct elf_link_hash_entry *h)
5441 {
5442 struct elf_dyn_relocs *p;
5443
5444 for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next)
5445 if (p->pc_count != 0)
5446 return TRUE;
5447 return FALSE;
5448 }
5449
5450 /* Adjust a symbol defined by a dynamic object and referenced by a
5451 regular object. The current definition is in some section of the
5452 dynamic object, but we're not including those sections. We have to
5453 change the definition to something the rest of the link can
5454 understand. */
5455
5456 static bfd_boolean
5457 ppc_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
5458 struct elf_link_hash_entry *h)
5459 {
5460 struct ppc_elf_link_hash_table *htab;
5461 asection *s;
5462
5463 #ifdef DEBUG
5464 fprintf (stderr, "ppc_elf_adjust_dynamic_symbol called for %s\n",
5465 h->root.root.string);
5466 #endif
5467
5468 /* Make sure we know what is going on here. */
5469 htab = ppc_elf_hash_table (info);
5470 BFD_ASSERT (htab->elf.dynobj != NULL
5471 && (h->needs_plt
5472 || h->type == STT_GNU_IFUNC
5473 || h->is_weakalias
5474 || (h->def_dynamic
5475 && h->ref_regular
5476 && !h->def_regular)));
5477
5478 /* Deal with function syms. */
5479 if (h->type == STT_FUNC
5480 || h->type == STT_GNU_IFUNC
5481 || h->needs_plt)
5482 {
5483 bfd_boolean local = (SYMBOL_CALLS_LOCAL (info, h)
5484 || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h));
5485 /* Discard dyn_relocs when non-pic if we've decided that a
5486 function symbol is local. */
5487 if (!bfd_link_pic (info) && local)
5488 ppc_elf_hash_entry (h)->dyn_relocs = NULL;
5489
5490 /* Clear procedure linkage table information for any symbol that
5491 won't need a .plt entry. */
5492 struct plt_entry *ent;
5493 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
5494 if (ent->plt.refcount > 0)
5495 break;
5496 if (ent == NULL
5497 || (h->type != STT_GNU_IFUNC && local))
5498 {
5499 /* A PLT entry is not required/allowed when:
5500
5501 1. We are not using ld.so; because then the PLT entry
5502 can't be set up, so we can't use one. In this case,
5503 ppc_elf_adjust_dynamic_symbol won't even be called.
5504
5505 2. GC has rendered the entry unused.
5506
5507 3. We know for certain that a call to this symbol
5508 will go to this object, or will remain undefined. */
5509 h->plt.plist = NULL;
5510 h->needs_plt = 0;
5511 h->pointer_equality_needed = 0;
5512 }
5513 else
5514 {
5515 /* Taking a function's address in a read/write section
5516 doesn't require us to define the function symbol in the
5517 executable on a plt call stub. A dynamic reloc can
5518 be used instead, giving better runtime performance.
5519 (Calls via that function pointer don't need to bounce
5520 through the plt call stub.) Similarly, use a dynamic
5521 reloc for a weak reference when possible, allowing the
5522 resolution of the symbol to be set at load time rather
5523 than link time. */
5524 if ((h->pointer_equality_needed
5525 || (h->non_got_ref
5526 && !h->ref_regular_nonweak
5527 && !UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)))
5528 && !htab->is_vxworks
5529 && !ppc_elf_hash_entry (h)->has_sda_refs
5530 && !readonly_dynrelocs (h))
5531 {
5532 h->pointer_equality_needed = 0;
5533 /* If we haven't seen a branch reloc then we don't need
5534 a plt entry. */
5535 if (!h->needs_plt)
5536 h->plt.plist = NULL;
5537 }
5538 else if (!bfd_link_pic (info))
5539 /* We are going to be defining the function symbol on the
5540 plt stub, so no dyn_relocs needed when non-pic. */
5541 ppc_elf_hash_entry (h)->dyn_relocs = NULL;
5542 }
5543 h->protected_def = 0;
5544 /* Function symbols can't have copy relocs. */
5545 return TRUE;
5546 }
5547 else
5548 h->plt.plist = NULL;
5549
5550 /* If this is a weak symbol, and there is a real definition, the
5551 processor independent code will have arranged for us to see the
5552 real definition first, and we can just use the same value. */
5553 if (h->is_weakalias)
5554 {
5555 struct elf_link_hash_entry *def = weakdef (h);
5556 BFD_ASSERT (def->root.type == bfd_link_hash_defined);
5557 h->root.u.def.section = def->root.u.def.section;
5558 h->root.u.def.value = def->root.u.def.value;
5559 if (def->root.u.def.section == htab->elf.sdynbss
5560 || def->root.u.def.section == htab->elf.sdynrelro
5561 || def->root.u.def.section == htab->dynsbss)
5562 ppc_elf_hash_entry (h)->dyn_relocs = NULL;
5563 return TRUE;
5564 }
5565
5566 /* This is a reference to a symbol defined by a dynamic object which
5567 is not a function. */
5568
5569 /* If we are creating a shared library, we must presume that the
5570 only references to the symbol are via the global offset table.
5571 For such cases we need not do anything here; the relocations will
5572 be handled correctly by relocate_section. */
5573 if (bfd_link_pic (info))
5574 {
5575 h->protected_def = 0;
5576 return TRUE;
5577 }
5578
5579 /* If there are no references to this symbol that do not use the
5580 GOT, we don't need to generate a copy reloc. */
5581 if (!h->non_got_ref)
5582 {
5583 h->protected_def = 0;
5584 return TRUE;
5585 }
5586
5587 /* Protected variables do not work with .dynbss. The copy in
5588 .dynbss won't be used by the shared library with the protected
5589 definition for the variable. Editing to PIC, or text relocations
5590 are preferable to an incorrect program. */
5591 if (h->protected_def)
5592 {
5593 if (ELIMINATE_COPY_RELOCS
5594 && ppc_elf_hash_entry (h)->has_addr16_ha
5595 && ppc_elf_hash_entry (h)->has_addr16_lo
5596 && htab->params->pic_fixup == 0
5597 && info->disable_target_specific_optimizations <= 1)
5598 htab->params->pic_fixup = 1;
5599 return TRUE;
5600 }
5601
5602 /* If -z nocopyreloc was given, we won't generate them either. */
5603 if (info->nocopyreloc)
5604 return TRUE;
5605
5606 /* If we don't find any dynamic relocs in read-only sections, then
5607 we'll be keeping the dynamic relocs and avoiding the copy reloc.
5608 We can't do this if there are any small data relocations. This
5609 doesn't work on VxWorks, where we can not have dynamic
5610 relocations (other than copy and jump slot relocations) in an
5611 executable. */
5612 if (ELIMINATE_COPY_RELOCS
5613 && !ppc_elf_hash_entry (h)->has_sda_refs
5614 && !htab->is_vxworks
5615 && !h->def_regular
5616 && !alias_readonly_dynrelocs (h))
5617 return TRUE;
5618
5619 /* We must allocate the symbol in our .dynbss section, which will
5620 become part of the .bss section of the executable. There will be
5621 an entry for this symbol in the .dynsym section. The dynamic
5622 object will contain position independent code, so all references
5623 from the dynamic object to this symbol will go through the global
5624 offset table. The dynamic linker will use the .dynsym entry to
5625 determine the address it must put in the global offset table, so
5626 both the dynamic object and the regular object will refer to the
5627 same memory location for the variable.
5628
5629 Of course, if the symbol is referenced using SDAREL relocs, we
5630 must instead allocate it in .sbss. */
5631 if (ppc_elf_hash_entry (h)->has_sda_refs)
5632 s = htab->dynsbss;
5633 else if ((h->root.u.def.section->flags & SEC_READONLY) != 0)
5634 s = htab->elf.sdynrelro;
5635 else
5636 s = htab->elf.sdynbss;
5637 BFD_ASSERT (s != NULL);
5638
5639 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
5640 {
5641 asection *srel;
5642
5643 /* We must generate a R_PPC_COPY reloc to tell the dynamic
5644 linker to copy the initial value out of the dynamic object
5645 and into the runtime process image. */
5646 if (ppc_elf_hash_entry (h)->has_sda_refs)
5647 srel = htab->relsbss;
5648 else if ((h->root.u.def.section->flags & SEC_READONLY) != 0)
5649 srel = htab->elf.sreldynrelro;
5650 else
5651 srel = htab->elf.srelbss;
5652 BFD_ASSERT (srel != NULL);
5653 srel->size += sizeof (Elf32_External_Rela);
5654 h->needs_copy = 1;
5655 }
5656
5657 /* We no longer want dyn_relocs. */
5658 ppc_elf_hash_entry (h)->dyn_relocs = NULL;
5659 return _bfd_elf_adjust_dynamic_copy (info, h, s);
5660 }
5661 \f
5662 /* Generate a symbol to mark plt call stubs. For non-PIC code the sym is
5663 xxxxxxxx.plt_call32.<callee> where xxxxxxxx is a hex number, usually 0,
5664 specifying the addend on the plt relocation. For -fpic code, the sym
5665 is xxxxxxxx.plt_pic32.<callee>, and for -fPIC
5666 xxxxxxxx.got2.plt_pic32.<callee>. */
5667
5668 static bfd_boolean
5669 add_stub_sym (struct plt_entry *ent,
5670 struct elf_link_hash_entry *h,
5671 struct bfd_link_info *info)
5672 {
5673 struct elf_link_hash_entry *sh;
5674 size_t len1, len2, len3;
5675 char *name;
5676 const char *stub;
5677 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
5678
5679 if (bfd_link_pic (info))
5680 stub = ".plt_pic32.";
5681 else
5682 stub = ".plt_call32.";
5683
5684 len1 = strlen (h->root.root.string);
5685 len2 = strlen (stub);
5686 len3 = 0;
5687 if (ent->sec)
5688 len3 = strlen (ent->sec->name);
5689 name = bfd_malloc (len1 + len2 + len3 + 9);
5690 if (name == NULL)
5691 return FALSE;
5692 sprintf (name, "%08x", (unsigned) ent->addend & 0xffffffff);
5693 if (ent->sec)
5694 memcpy (name + 8, ent->sec->name, len3);
5695 memcpy (name + 8 + len3, stub, len2);
5696 memcpy (name + 8 + len3 + len2, h->root.root.string, len1 + 1);
5697 sh = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
5698 if (sh == NULL)
5699 return FALSE;
5700 if (sh->root.type == bfd_link_hash_new)
5701 {
5702 sh->root.type = bfd_link_hash_defined;
5703 sh->root.u.def.section = htab->glink;
5704 sh->root.u.def.value = ent->glink_offset;
5705 sh->ref_regular = 1;
5706 sh->def_regular = 1;
5707 sh->ref_regular_nonweak = 1;
5708 sh->forced_local = 1;
5709 sh->non_elf = 0;
5710 sh->root.linker_def = 1;
5711 }
5712 return TRUE;
5713 }
5714
5715 /* Allocate NEED contiguous space in .got, and return the offset.
5716 Handles allocation of the got header when crossing 32k. */
5717
5718 static bfd_vma
5719 allocate_got (struct ppc_elf_link_hash_table *htab, unsigned int need)
5720 {
5721 bfd_vma where;
5722 unsigned int max_before_header;
5723
5724 if (htab->plt_type == PLT_VXWORKS)
5725 {
5726 where = htab->elf.sgot->size;
5727 htab->elf.sgot->size += need;
5728 }
5729 else
5730 {
5731 max_before_header = htab->plt_type == PLT_NEW ? 32768 : 32764;
5732 if (need <= htab->got_gap)
5733 {
5734 where = max_before_header - htab->got_gap;
5735 htab->got_gap -= need;
5736 }
5737 else
5738 {
5739 if (htab->elf.sgot->size + need > max_before_header
5740 && htab->elf.sgot->size <= max_before_header)
5741 {
5742 htab->got_gap = max_before_header - htab->elf.sgot->size;
5743 htab->elf.sgot->size = max_before_header + htab->got_header_size;
5744 }
5745 where = htab->elf.sgot->size;
5746 htab->elf.sgot->size += need;
5747 }
5748 }
5749 return where;
5750 }
5751
5752 /* Calculate size of GOT entries for symbol given its TLS_MASK.
5753 TLS_LD is excluded because those go in a special GOT slot. */
5754
5755 static inline unsigned int
5756 got_entries_needed (int tls_mask)
5757 {
5758 unsigned int need;
5759 if ((tls_mask & TLS_TLS) == 0)
5760 need = 4;
5761 else
5762 {
5763 need = 0;
5764 if ((tls_mask & TLS_GD) != 0)
5765 need += 8;
5766 if ((tls_mask & (TLS_TPREL | TLS_TPRELGD)) != 0)
5767 need += 4;
5768 if ((tls_mask & TLS_DTPREL) != 0)
5769 need += 4;
5770 }
5771 return need;
5772 }
5773
5774 /* Calculate size of relocs needed for symbol given its TLS_MASK and
5775 NEEDed GOT entries. KNOWN says a TPREL offset can be calculated at
5776 link time. */
5777
5778 static inline unsigned int
5779 got_relocs_needed (int tls_mask, unsigned int need, bfd_boolean known)
5780 {
5781 /* All the entries we allocated need relocs.
5782 Except IE in executable with a local symbol. We could also omit
5783 the DTPREL reloc on the second word of a GD entry under the same
5784 condition as that for IE, but ld.so needs to differentiate
5785 LD and GD entries. */
5786 if ((tls_mask & (TLS_TPREL | TLS_TPRELGD)) != 0 && known)
5787 need -= 4;
5788 return need * sizeof (Elf32_External_Rela) / 4;
5789 }
5790
5791 /* If H is undefined, make it dynamic if that makes sense. */
5792
5793 static bfd_boolean
5794 ensure_undef_dynamic (struct bfd_link_info *info,
5795 struct elf_link_hash_entry *h)
5796 {
5797 struct elf_link_hash_table *htab = elf_hash_table (info);
5798
5799 if (htab->dynamic_sections_created
5800 && ((info->dynamic_undefined_weak != 0
5801 && h->root.type == bfd_link_hash_undefweak)
5802 || h->root.type == bfd_link_hash_undefined)
5803 && h->dynindx == -1
5804 && !h->forced_local
5805 && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
5806 return bfd_elf_link_record_dynamic_symbol (info, h);
5807 return TRUE;
5808 }
5809
5810 /* Allocate space in associated reloc sections for dynamic relocs. */
5811
5812 static bfd_boolean
5813 allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
5814 {
5815 struct bfd_link_info *info = inf;
5816 struct ppc_elf_link_hash_entry *eh;
5817 struct ppc_elf_link_hash_table *htab;
5818 struct elf_dyn_relocs *p;
5819 bfd_boolean dyn;
5820
5821 if (h->root.type == bfd_link_hash_indirect)
5822 return TRUE;
5823
5824 htab = ppc_elf_hash_table (info);
5825 eh = (struct ppc_elf_link_hash_entry *) h;
5826 if (eh->elf.got.refcount > 0
5827 || (ELIMINATE_COPY_RELOCS
5828 && !eh->elf.def_regular
5829 && eh->elf.protected_def
5830 && eh->has_addr16_ha
5831 && eh->has_addr16_lo
5832 && htab->params->pic_fixup > 0))
5833 {
5834 unsigned int need;
5835
5836 /* Make sure this symbol is output as a dynamic symbol. */
5837 if (!ensure_undef_dynamic (info, &eh->elf))
5838 return FALSE;
5839
5840 need = 0;
5841 if ((eh->tls_mask & TLS_LD) != 0)
5842 {
5843 if (!eh->elf.def_dynamic)
5844 /* We'll just use htab->tlsld_got.offset. This should
5845 always be the case. It's a little odd if we have
5846 a local dynamic reloc against a non-local symbol. */
5847 htab->tlsld_got.refcount += 1;
5848 else
5849 need += 8;
5850 }
5851 need += got_entries_needed (eh->tls_mask);
5852 if (need == 0)
5853 eh->elf.got.offset = (bfd_vma) -1;
5854 else
5855 {
5856 eh->elf.got.offset = allocate_got (htab, need);
5857 if ((bfd_link_pic (info)
5858 || (htab->elf.dynamic_sections_created
5859 && eh->elf.dynindx != -1
5860 && !SYMBOL_REFERENCES_LOCAL (info, &eh->elf)))
5861 && !UNDEFWEAK_NO_DYNAMIC_RELOC (info, &eh->elf))
5862 {
5863 asection *rsec;
5864 bfd_boolean tprel_known = (bfd_link_executable (info)
5865 && SYMBOL_REFERENCES_LOCAL (info,
5866 &eh->elf));
5867
5868 need = got_relocs_needed (eh->tls_mask, need, tprel_known);
5869 if ((eh->tls_mask & TLS_LD) != 0 && eh->elf.def_dynamic)
5870 need -= sizeof (Elf32_External_Rela);
5871 rsec = htab->elf.srelgot;
5872 if (eh->elf.type == STT_GNU_IFUNC)
5873 rsec = htab->elf.irelplt;
5874 rsec->size += need;
5875 }
5876 }
5877 }
5878 else
5879 eh->elf.got.offset = (bfd_vma) -1;
5880
5881 /* If no dynamic sections we can't have dynamic relocs, except for
5882 IFUNCs which are handled even in static executables. */
5883 if (!htab->elf.dynamic_sections_created
5884 && h->type != STT_GNU_IFUNC)
5885 eh->dyn_relocs = NULL;
5886
5887 /* Discard relocs on undefined symbols that must be local. */
5888 else if (h->root.type == bfd_link_hash_undefined
5889 && ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
5890 eh->dyn_relocs = NULL;
5891
5892 /* Also discard relocs on undefined weak syms with non-default
5893 visibility, or when dynamic_undefined_weak says so. */
5894 else if (UNDEFWEAK_NO_DYNAMIC_RELOC (info, h))
5895 eh->dyn_relocs = NULL;
5896
5897 if (eh->dyn_relocs == NULL)
5898 ;
5899
5900 /* In the shared -Bsymbolic case, discard space allocated for
5901 dynamic pc-relative relocs against symbols which turn out to be
5902 defined in regular objects. For the normal shared case, discard
5903 space for relocs that have become local due to symbol visibility
5904 changes. */
5905 else if (bfd_link_pic (info))
5906 {
5907 /* Relocs that use pc_count are those that appear on a call insn,
5908 or certain REL relocs (see must_be_dyn_reloc) that can be
5909 generated via assembly. We want calls to protected symbols to
5910 resolve directly to the function rather than going via the plt.
5911 If people want function pointer comparisons to work as expected
5912 then they should avoid writing weird assembly. */
5913 if (SYMBOL_CALLS_LOCAL (info, h))
5914 {
5915 struct elf_dyn_relocs **pp;
5916
5917 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
5918 {
5919 p->count -= p->pc_count;
5920 p->pc_count = 0;
5921 if (p->count == 0)
5922 *pp = p->next;
5923 else
5924 pp = &p->next;
5925 }
5926 }
5927
5928 if (htab->is_vxworks)
5929 {
5930 struct elf_dyn_relocs **pp;
5931
5932 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
5933 {
5934 if (strcmp (p->sec->output_section->name, ".tls_vars") == 0)
5935 *pp = p->next;
5936 else
5937 pp = &p->next;
5938 }
5939 }
5940
5941 if (eh->dyn_relocs != NULL)
5942 {
5943 /* Make sure this symbol is output as a dynamic symbol. */
5944 if (!ensure_undef_dynamic (info, h))
5945 return FALSE;
5946 }
5947 }
5948 else if (ELIMINATE_COPY_RELOCS)
5949 {
5950 /* For the non-pic case, discard space for relocs against
5951 symbols which turn out to need copy relocs or are not
5952 dynamic. */
5953 if (h->dynamic_adjusted
5954 && !h->def_regular
5955 && !ELF_COMMON_DEF_P (h)
5956 && !(h->protected_def
5957 && eh->has_addr16_ha
5958 && eh->has_addr16_lo
5959 && htab->params->pic_fixup > 0))
5960 {
5961 /* Make sure this symbol is output as a dynamic symbol. */
5962 if (!ensure_undef_dynamic (info, h))
5963 return FALSE;
5964
5965 if (h->dynindx == -1)
5966 eh->dyn_relocs = NULL;
5967 }
5968 else
5969 eh->dyn_relocs = NULL;
5970 }
5971
5972 /* Allocate space. */
5973 for (p = eh->dyn_relocs; p != NULL; p = p->next)
5974 {
5975 asection *sreloc = elf_section_data (p->sec)->sreloc;
5976 if (eh->elf.type == STT_GNU_IFUNC)
5977 sreloc = htab->elf.irelplt;
5978 sreloc->size += p->count * sizeof (Elf32_External_Rela);
5979 }
5980
5981 /* Handle PLT relocs. Done last, after dynindx has settled. */
5982 dyn = htab->elf.dynamic_sections_created && h->dynindx != -1;
5983 if (dyn || h->type == STT_GNU_IFUNC)
5984 {
5985 struct plt_entry *ent;
5986 bfd_boolean doneone = FALSE;
5987 bfd_vma plt_offset = 0, glink_offset = 0;
5988
5989 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
5990 if (ent->plt.refcount > 0)
5991 {
5992 asection *s = htab->elf.splt;
5993
5994 if (!dyn)
5995 s = htab->elf.iplt;
5996
5997 if (htab->plt_type == PLT_NEW || !dyn)
5998 {
5999 if (!doneone)
6000 {
6001 plt_offset = s->size;
6002 s->size += 4;
6003 }
6004 ent->plt.offset = plt_offset;
6005
6006 s = htab->glink;
6007 if (!doneone || bfd_link_pic (info))
6008 {
6009 glink_offset = s->size;
6010 s->size += GLINK_ENTRY_SIZE (htab, h);
6011 }
6012 if (!doneone
6013 && !bfd_link_pic (info)
6014 && h->def_dynamic
6015 && !h->def_regular)
6016 {
6017 h->root.u.def.section = s;
6018 h->root.u.def.value = glink_offset;
6019 }
6020 ent->glink_offset = glink_offset;
6021
6022 if (htab->params->emit_stub_syms
6023 && !add_stub_sym (ent, h, info))
6024 return FALSE;
6025 }
6026 else
6027 {
6028 if (!doneone)
6029 {
6030 /* If this is the first .plt entry, make room
6031 for the special first entry. */
6032 if (s->size == 0)
6033 s->size += htab->plt_initial_entry_size;
6034
6035 /* The PowerPC PLT is actually composed of two
6036 parts, the first part is 2 words (for a load
6037 and a jump), and then there is a remaining
6038 word available at the end. */
6039 plt_offset = (htab->plt_initial_entry_size
6040 + (htab->plt_slot_size
6041 * ((s->size
6042 - htab->plt_initial_entry_size)
6043 / htab->plt_entry_size)));
6044
6045 /* If this symbol is not defined in a regular
6046 file, and we are not generating a shared
6047 library, then set the symbol to this location
6048 in the .plt. This is to avoid text
6049 relocations, and is required to make
6050 function pointers compare as equal between
6051 the normal executable and the shared library. */
6052 if (! bfd_link_pic (info)
6053 && h->def_dynamic
6054 && !h->def_regular)
6055 {
6056 h->root.u.def.section = s;
6057 h->root.u.def.value = plt_offset;
6058 }
6059
6060 /* Make room for this entry. */
6061 s->size += htab->plt_entry_size;
6062 /* After the 8192nd entry, room for two entries
6063 is allocated. */
6064 if (htab->plt_type == PLT_OLD
6065 && (s->size - htab->plt_initial_entry_size)
6066 / htab->plt_entry_size
6067 > PLT_NUM_SINGLE_ENTRIES)
6068 s->size += htab->plt_entry_size;
6069 }
6070 ent->plt.offset = plt_offset;
6071 }
6072
6073 /* We also need to make an entry in the .rela.plt section. */
6074 if (!doneone)
6075 {
6076 if (!dyn)
6077 htab->elf.irelplt->size += sizeof (Elf32_External_Rela);
6078 else
6079 {
6080 htab->elf.srelplt->size += sizeof (Elf32_External_Rela);
6081
6082 if (htab->plt_type == PLT_VXWORKS)
6083 {
6084 /* Allocate space for the unloaded relocations. */
6085 if (!bfd_link_pic (info)
6086 && htab->elf.dynamic_sections_created)
6087 {
6088 if (ent->plt.offset
6089 == (bfd_vma) htab->plt_initial_entry_size)
6090 {
6091 htab->srelplt2->size
6092 += (sizeof (Elf32_External_Rela)
6093 * VXWORKS_PLTRESOLVE_RELOCS);
6094 }
6095
6096 htab->srelplt2->size
6097 += (sizeof (Elf32_External_Rela)
6098 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS);
6099 }
6100
6101 /* Every PLT entry has an associated GOT entry in
6102 .got.plt. */
6103 htab->elf.sgotplt->size += 4;
6104 }
6105 }
6106 doneone = TRUE;
6107 }
6108 }
6109 else
6110 ent->plt.offset = (bfd_vma) -1;
6111
6112 if (!doneone)
6113 {
6114 h->plt.plist = NULL;
6115 h->needs_plt = 0;
6116 }
6117 }
6118 else
6119 {
6120 h->plt.plist = NULL;
6121 h->needs_plt = 0;
6122 }
6123
6124 return TRUE;
6125 }
6126
6127 /* Set DF_TEXTREL if we find any dynamic relocs that apply to
6128 read-only sections. */
6129
6130 static bfd_boolean
6131 maybe_set_textrel (struct elf_link_hash_entry *h, void *info_p)
6132 {
6133 asection *sec;
6134
6135 if (h->root.type == bfd_link_hash_indirect)
6136 return TRUE;
6137
6138 sec = readonly_dynrelocs (h);
6139 if (sec != NULL)
6140 {
6141 struct bfd_link_info *info = (struct bfd_link_info *) info_p;
6142
6143 info->flags |= DF_TEXTREL;
6144 info->callbacks->minfo
6145 (_("%pB: dynamic relocation against `%pT' in read-only section `%pA'\n"),
6146 sec->owner, h->root.root.string, sec);
6147
6148 /* Not an error, just cut short the traversal. */
6149 return FALSE;
6150 }
6151 return TRUE;
6152 }
6153
6154 static const unsigned char glink_eh_frame_cie[] =
6155 {
6156 0, 0, 0, 16, /* length. */
6157 0, 0, 0, 0, /* id. */
6158 1, /* CIE version. */
6159 'z', 'R', 0, /* Augmentation string. */
6160 4, /* Code alignment. */
6161 0x7c, /* Data alignment. */
6162 65, /* RA reg. */
6163 1, /* Augmentation size. */
6164 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding. */
6165 DW_CFA_def_cfa, 1, 0 /* def_cfa: r1 offset 0. */
6166 };
6167
6168 /* Set the sizes of the dynamic sections. */
6169
6170 static bfd_boolean
6171 ppc_elf_size_dynamic_sections (bfd *output_bfd,
6172 struct bfd_link_info *info)
6173 {
6174 struct ppc_elf_link_hash_table *htab;
6175 asection *s;
6176 bfd_boolean relocs;
6177 bfd *ibfd;
6178
6179 #ifdef DEBUG
6180 fprintf (stderr, "ppc_elf_size_dynamic_sections called\n");
6181 #endif
6182
6183 htab = ppc_elf_hash_table (info);
6184 BFD_ASSERT (htab->elf.dynobj != NULL);
6185
6186 if (elf_hash_table (info)->dynamic_sections_created)
6187 {
6188 /* Set the contents of the .interp section to the interpreter. */
6189 if (bfd_link_executable (info) && !info->nointerp)
6190 {
6191 s = bfd_get_linker_section (htab->elf.dynobj, ".interp");
6192 BFD_ASSERT (s != NULL);
6193 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
6194 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
6195 }
6196 }
6197
6198 if (htab->plt_type == PLT_OLD)
6199 htab->got_header_size = 16;
6200 else if (htab->plt_type == PLT_NEW)
6201 htab->got_header_size = 12;
6202
6203 /* Set up .got offsets for local syms, and space for local dynamic
6204 relocs. */
6205 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
6206 {
6207 bfd_signed_vma *local_got;
6208 bfd_signed_vma *end_local_got;
6209 struct plt_entry **local_plt;
6210 struct plt_entry **end_local_plt;
6211 char *lgot_masks;
6212 bfd_size_type locsymcount;
6213 Elf_Internal_Shdr *symtab_hdr;
6214
6215 if (!is_ppc_elf (ibfd))
6216 continue;
6217
6218 for (s = ibfd->sections; s != NULL; s = s->next)
6219 {
6220 struct ppc_dyn_relocs *p;
6221
6222 for (p = ((struct ppc_dyn_relocs *)
6223 elf_section_data (s)->local_dynrel);
6224 p != NULL;
6225 p = p->next)
6226 {
6227 if (!bfd_is_abs_section (p->sec)
6228 && bfd_is_abs_section (p->sec->output_section))
6229 {
6230 /* Input section has been discarded, either because
6231 it is a copy of a linkonce section or due to
6232 linker script /DISCARD/, so we'll be discarding
6233 the relocs too. */
6234 }
6235 else if (htab->is_vxworks
6236 && strcmp (p->sec->output_section->name,
6237 ".tls_vars") == 0)
6238 {
6239 /* Relocations in vxworks .tls_vars sections are
6240 handled specially by the loader. */
6241 }
6242 else if (p->count != 0)
6243 {
6244 asection *sreloc = elf_section_data (p->sec)->sreloc;
6245 if (p->ifunc)
6246 sreloc = htab->elf.irelplt;
6247 sreloc->size += p->count * sizeof (Elf32_External_Rela);
6248 if ((p->sec->output_section->flags
6249 & (SEC_READONLY | SEC_ALLOC))
6250 == (SEC_READONLY | SEC_ALLOC))
6251 {
6252 info->flags |= DF_TEXTREL;
6253 info->callbacks->minfo (_("%pB: dynamic relocation in read-only section `%pA'\n"),
6254 p->sec->owner, p->sec);
6255 }
6256 }
6257 }
6258 }
6259
6260 local_got = elf_local_got_refcounts (ibfd);
6261 if (!local_got)
6262 continue;
6263
6264 symtab_hdr = &elf_symtab_hdr (ibfd);
6265 locsymcount = symtab_hdr->sh_info;
6266 end_local_got = local_got + locsymcount;
6267 local_plt = (struct plt_entry **) end_local_got;
6268 end_local_plt = local_plt + locsymcount;
6269 lgot_masks = (char *) end_local_plt;
6270
6271 for (; local_got < end_local_got; ++local_got, ++lgot_masks)
6272 if (*local_got > 0)
6273 {
6274 unsigned int need;
6275 if ((*lgot_masks & TLS_LD) != 0)
6276 htab->tlsld_got.refcount += 1;
6277 need = got_entries_needed (*lgot_masks);
6278 if (need == 0)
6279 *local_got = (bfd_vma) -1;
6280 else
6281 {
6282 *local_got = allocate_got (htab, need);
6283 if (bfd_link_pic (info))
6284 {
6285 asection *srel;
6286 bfd_boolean tprel_known = bfd_link_executable (info);
6287
6288 need = got_relocs_needed (*lgot_masks, need, tprel_known);
6289 srel = htab->elf.srelgot;
6290 if ((*lgot_masks & PLT_IFUNC) != 0)
6291 srel = htab->elf.irelplt;
6292 srel->size += need;
6293 }
6294 }
6295 }
6296 else
6297 *local_got = (bfd_vma) -1;
6298
6299 if (htab->is_vxworks)
6300 continue;
6301
6302 /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */
6303 for (; local_plt < end_local_plt; ++local_plt)
6304 {
6305 struct plt_entry *ent;
6306 bfd_boolean doneone = FALSE;
6307 bfd_vma plt_offset = 0, glink_offset = 0;
6308
6309 for (ent = *local_plt; ent != NULL; ent = ent->next)
6310 if (ent->plt.refcount > 0)
6311 {
6312 s = htab->elf.iplt;
6313
6314 if (!doneone)
6315 {
6316 plt_offset = s->size;
6317 s->size += 4;
6318 }
6319 ent->plt.offset = plt_offset;
6320
6321 s = htab->glink;
6322 if (!doneone || bfd_link_pic (info))
6323 {
6324 glink_offset = s->size;
6325 s->size += GLINK_ENTRY_SIZE (htab, NULL);
6326 }
6327 ent->glink_offset = glink_offset;
6328
6329 if (!doneone)
6330 {
6331 htab->elf.irelplt->size += sizeof (Elf32_External_Rela);
6332 doneone = TRUE;
6333 }
6334 }
6335 else
6336 ent->plt.offset = (bfd_vma) -1;
6337 }
6338 }
6339
6340 /* Allocate space for global sym dynamic relocs. */
6341 elf_link_hash_traverse (elf_hash_table (info), allocate_dynrelocs, info);
6342
6343 if (htab->tlsld_got.refcount > 0)
6344 {
6345 htab->tlsld_got.offset = allocate_got (htab, 8);
6346 if (bfd_link_pic (info))
6347 htab->elf.srelgot->size += sizeof (Elf32_External_Rela);
6348 }
6349 else
6350 htab->tlsld_got.offset = (bfd_vma) -1;
6351
6352 if (htab->elf.sgot != NULL && htab->plt_type != PLT_VXWORKS)
6353 {
6354 unsigned int g_o_t = 32768;
6355
6356 /* If we haven't allocated the header, do so now. When we get here,
6357 for old plt/got the got size will be 0 to 32764 (not allocated),
6358 or 32780 to 65536 (header allocated). For new plt/got, the
6359 corresponding ranges are 0 to 32768 and 32780 to 65536. */
6360 if (htab->elf.sgot->size <= 32768)
6361 {
6362 g_o_t = htab->elf.sgot->size;
6363 if (htab->plt_type == PLT_OLD)
6364 g_o_t += 4;
6365 htab->elf.sgot->size += htab->got_header_size;
6366 }
6367
6368 htab->elf.hgot->root.u.def.value = g_o_t;
6369 }
6370 if (bfd_link_pic (info))
6371 {
6372 struct elf_link_hash_entry *sda = htab->sdata[0].sym;
6373
6374 sda->root.u.def.section = htab->elf.hgot->root.u.def.section;
6375 sda->root.u.def.value = htab->elf.hgot->root.u.def.value;
6376 }
6377 if (info->emitrelocations)
6378 {
6379 struct elf_link_hash_entry *sda = htab->sdata[0].sym;
6380
6381 if (sda != NULL && sda->ref_regular)
6382 sda->root.u.def.section->flags |= SEC_KEEP;
6383 sda = htab->sdata[1].sym;
6384 if (sda != NULL && sda->ref_regular)
6385 sda->root.u.def.section->flags |= SEC_KEEP;
6386 }
6387
6388 if (htab->glink != NULL
6389 && htab->glink->size != 0
6390 && htab->elf.dynamic_sections_created)
6391 {
6392 htab->glink_pltresolve = htab->glink->size;
6393 /* Space for the branch table. */
6394 htab->glink->size
6395 += htab->elf.srelplt->size / (sizeof (Elf32_External_Rela) / 4) - 4;
6396 /* Pad out to align the start of PLTresolve. */
6397 htab->glink->size += -htab->glink->size & (htab->params->ppc476_workaround
6398 ? 63 : 15);
6399 htab->glink->size += GLINK_PLTRESOLVE;
6400
6401 if (htab->params->emit_stub_syms)
6402 {
6403 struct elf_link_hash_entry *sh;
6404 sh = elf_link_hash_lookup (&htab->elf, "__glink",
6405 TRUE, FALSE, FALSE);
6406 if (sh == NULL)
6407 return FALSE;
6408 if (sh->root.type == bfd_link_hash_new)
6409 {
6410 sh->root.type = bfd_link_hash_defined;
6411 sh->root.u.def.section = htab->glink;
6412 sh->root.u.def.value = htab->glink_pltresolve;
6413 sh->ref_regular = 1;
6414 sh->def_regular = 1;
6415 sh->ref_regular_nonweak = 1;
6416 sh->forced_local = 1;
6417 sh->non_elf = 0;
6418 sh->root.linker_def = 1;
6419 }
6420 sh = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve",
6421 TRUE, FALSE, FALSE);
6422 if (sh == NULL)
6423 return FALSE;
6424 if (sh->root.type == bfd_link_hash_new)
6425 {
6426 sh->root.type = bfd_link_hash_defined;
6427 sh->root.u.def.section = htab->glink;
6428 sh->root.u.def.value = htab->glink->size - GLINK_PLTRESOLVE;
6429 sh->ref_regular = 1;
6430 sh->def_regular = 1;
6431 sh->ref_regular_nonweak = 1;
6432 sh->forced_local = 1;
6433 sh->non_elf = 0;
6434 sh->root.linker_def = 1;
6435 }
6436 }
6437 }
6438
6439 if (htab->glink != NULL
6440 && htab->glink->size != 0
6441 && htab->glink_eh_frame != NULL
6442 && !bfd_is_abs_section (htab->glink_eh_frame->output_section)
6443 && _bfd_elf_eh_frame_present (info))
6444 {
6445 s = htab->glink_eh_frame;
6446 s->size = sizeof (glink_eh_frame_cie) + 20;
6447 if (bfd_link_pic (info))
6448 {
6449 s->size += 4;
6450 if (htab->glink->size - GLINK_PLTRESOLVE + 8 >= 256)
6451 s->size += 4;
6452 }
6453 }
6454
6455 /* We've now determined the sizes of the various dynamic sections.
6456 Allocate memory for them. */
6457 relocs = FALSE;
6458 for (s = htab->elf.dynobj->sections; s != NULL; s = s->next)
6459 {
6460 bfd_boolean strip_section = TRUE;
6461
6462 if ((s->flags & SEC_LINKER_CREATED) == 0)
6463 continue;
6464
6465 if (s == htab->elf.splt
6466 || s == htab->elf.sgot)
6467 {
6468 /* We'd like to strip these sections if they aren't needed, but if
6469 we've exported dynamic symbols from them we must leave them.
6470 It's too late to tell BFD to get rid of the symbols. */
6471 if (htab->elf.hplt != NULL)
6472 strip_section = FALSE;
6473 /* Strip this section if we don't need it; see the
6474 comment below. */
6475 }
6476 else if (s == htab->elf.iplt
6477 || s == htab->glink
6478 || s == htab->glink_eh_frame
6479 || s == htab->elf.sgotplt
6480 || s == htab->sbss
6481 || s == htab->elf.sdynbss
6482 || s == htab->elf.sdynrelro
6483 || s == htab->dynsbss)
6484 {
6485 /* Strip these too. */
6486 }
6487 else if (s == htab->sdata[0].section
6488 || s == htab->sdata[1].section)
6489 {
6490 strip_section = (s->flags & SEC_KEEP) == 0;
6491 }
6492 else if (CONST_STRNEQ (bfd_get_section_name (htab->elf.dynobj, s),
6493 ".rela"))
6494 {
6495 if (s->size != 0)
6496 {
6497 /* Remember whether there are any relocation sections. */
6498 relocs = TRUE;
6499
6500 /* We use the reloc_count field as a counter if we need
6501 to copy relocs into the output file. */
6502 s->reloc_count = 0;
6503 }
6504 }
6505 else
6506 {
6507 /* It's not one of our sections, so don't allocate space. */
6508 continue;
6509 }
6510
6511 if (s->size == 0 && strip_section)
6512 {
6513 /* If we don't need this section, strip it from the
6514 output file. This is mostly to handle .rela.bss and
6515 .rela.plt. We must create both sections in
6516 create_dynamic_sections, because they must be created
6517 before the linker maps input sections to output
6518 sections. The linker does that before
6519 adjust_dynamic_symbol is called, and it is that
6520 function which decides whether anything needs to go
6521 into these sections. */
6522 s->flags |= SEC_EXCLUDE;
6523 continue;
6524 }
6525
6526 if ((s->flags & SEC_HAS_CONTENTS) == 0)
6527 continue;
6528
6529 /* Allocate memory for the section contents. */
6530 s->contents = bfd_zalloc (htab->elf.dynobj, s->size);
6531 if (s->contents == NULL)
6532 return FALSE;
6533 }
6534
6535 if (htab->elf.dynamic_sections_created)
6536 {
6537 /* Add some entries to the .dynamic section. We fill in the
6538 values later, in ppc_elf_finish_dynamic_sections, but we
6539 must add the entries now so that we get the correct size for
6540 the .dynamic section. The DT_DEBUG entry is filled in by the
6541 dynamic linker and used by the debugger. */
6542 #define add_dynamic_entry(TAG, VAL) \
6543 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
6544
6545 if (bfd_link_executable (info))
6546 {
6547 if (!add_dynamic_entry (DT_DEBUG, 0))
6548 return FALSE;
6549 }
6550
6551 if (htab->elf.splt != NULL && htab->elf.splt->size != 0)
6552 {
6553 if (!add_dynamic_entry (DT_PLTGOT, 0)
6554 || !add_dynamic_entry (DT_PLTRELSZ, 0)
6555 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
6556 || !add_dynamic_entry (DT_JMPREL, 0))
6557 return FALSE;
6558 }
6559
6560 if (htab->plt_type == PLT_NEW
6561 && htab->glink != NULL
6562 && htab->glink->size != 0)
6563 {
6564 if (!add_dynamic_entry (DT_PPC_GOT, 0))
6565 return FALSE;
6566 if (!htab->params->no_tls_get_addr_opt
6567 && htab->tls_get_addr != NULL
6568 && htab->tls_get_addr->plt.plist != NULL
6569 && !add_dynamic_entry (DT_PPC_OPT, PPC_OPT_TLS))
6570 return FALSE;
6571 }
6572
6573 if (relocs)
6574 {
6575 if (!add_dynamic_entry (DT_RELA, 0)
6576 || !add_dynamic_entry (DT_RELASZ, 0)
6577 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
6578 return FALSE;
6579 }
6580
6581 /* If any dynamic relocs apply to a read-only section, then we
6582 need a DT_TEXTREL entry. */
6583 if ((info->flags & DF_TEXTREL) == 0)
6584 elf_link_hash_traverse (elf_hash_table (info), maybe_set_textrel,
6585 info);
6586
6587 if ((info->flags & DF_TEXTREL) != 0)
6588 {
6589 if (!add_dynamic_entry (DT_TEXTREL, 0))
6590 return FALSE;
6591 }
6592 if (htab->is_vxworks
6593 && !elf_vxworks_add_dynamic_entries (output_bfd, info))
6594 return FALSE;
6595 }
6596 #undef add_dynamic_entry
6597
6598 if (htab->glink_eh_frame != NULL
6599 && htab->glink_eh_frame->contents != NULL)
6600 {
6601 unsigned char *p = htab->glink_eh_frame->contents;
6602 bfd_vma val;
6603
6604 memcpy (p, glink_eh_frame_cie, sizeof (glink_eh_frame_cie));
6605 /* CIE length (rewrite in case little-endian). */
6606 bfd_put_32 (htab->elf.dynobj, sizeof (glink_eh_frame_cie) - 4, p);
6607 p += sizeof (glink_eh_frame_cie);
6608 /* FDE length. */
6609 val = htab->glink_eh_frame->size - 4 - sizeof (glink_eh_frame_cie);
6610 bfd_put_32 (htab->elf.dynobj, val, p);
6611 p += 4;
6612 /* CIE pointer. */
6613 val = p - htab->glink_eh_frame->contents;
6614 bfd_put_32 (htab->elf.dynobj, val, p);
6615 p += 4;
6616 /* Offset to .glink. Set later. */
6617 p += 4;
6618 /* .glink size. */
6619 bfd_put_32 (htab->elf.dynobj, htab->glink->size, p);
6620 p += 4;
6621 /* Augmentation. */
6622 p += 1;
6623
6624 if (bfd_link_pic (info)
6625 && htab->elf.dynamic_sections_created)
6626 {
6627 bfd_vma adv = (htab->glink->size - GLINK_PLTRESOLVE + 8) >> 2;
6628 if (adv < 64)
6629 *p++ = DW_CFA_advance_loc + adv;
6630 else if (adv < 256)
6631 {
6632 *p++ = DW_CFA_advance_loc1;
6633 *p++ = adv;
6634 }
6635 else if (adv < 65536)
6636 {
6637 *p++ = DW_CFA_advance_loc2;
6638 bfd_put_16 (htab->elf.dynobj, adv, p);
6639 p += 2;
6640 }
6641 else
6642 {
6643 *p++ = DW_CFA_advance_loc4;
6644 bfd_put_32 (htab->elf.dynobj, adv, p);
6645 p += 4;
6646 }
6647 *p++ = DW_CFA_register;
6648 *p++ = 65;
6649 p++;
6650 *p++ = DW_CFA_advance_loc + 4;
6651 *p++ = DW_CFA_restore_extended;
6652 *p++ = 65;
6653 }
6654 BFD_ASSERT ((bfd_vma) ((p + 3 - htab->glink_eh_frame->contents) & -4)
6655 == htab->glink_eh_frame->size);
6656 }
6657
6658 return TRUE;
6659 }
6660
6661 /* Arrange to have _SDA_BASE_ or _SDA2_BASE_ stripped from the output
6662 if it looks like nothing is using them. */
6663
6664 static void
6665 maybe_strip_sdasym (bfd *output_bfd, elf_linker_section_t *lsect)
6666 {
6667 struct elf_link_hash_entry *sda = lsect->sym;
6668
6669 if (sda != NULL && !sda->ref_regular && sda->dynindx == -1)
6670 {
6671 asection *s;
6672
6673 s = bfd_get_section_by_name (output_bfd, lsect->name);
6674 if (s == NULL || bfd_section_removed_from_list (output_bfd, s))
6675 {
6676 s = bfd_get_section_by_name (output_bfd, lsect->bss_name);
6677 if (s == NULL || bfd_section_removed_from_list (output_bfd, s))
6678 {
6679 sda->def_regular = 0;
6680 /* This is somewhat magic. See elf_link_output_extsym. */
6681 sda->ref_dynamic = 1;
6682 sda->forced_local = 0;
6683 }
6684 }
6685 }
6686 }
6687
6688 void
6689 ppc_elf_maybe_strip_sdata_syms (struct bfd_link_info *info)
6690 {
6691 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
6692
6693 if (htab != NULL)
6694 {
6695 maybe_strip_sdasym (info->output_bfd, &htab->sdata[0]);
6696 maybe_strip_sdasym (info->output_bfd, &htab->sdata[1]);
6697 }
6698 }
6699
6700
6701 /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
6702
6703 static bfd_boolean
6704 ppc_elf_hash_symbol (struct elf_link_hash_entry *h)
6705 {
6706 if (h->plt.plist != NULL
6707 && !h->def_regular
6708 && (!h->pointer_equality_needed
6709 || !h->ref_regular_nonweak))
6710 return FALSE;
6711
6712 return _bfd_elf_hash_symbol (h);
6713 }
6714 \f
6715 #define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0]))
6716
6717 /* Relaxation trampolines. r12 is available for clobbering (r11, is
6718 used for some functions that are allowed to break the ABI). */
6719 static const int shared_stub_entry[] =
6720 {
6721 0x7c0802a6, /* mflr 0 */
6722 0x429f0005, /* bcl 20, 31, .Lxxx */
6723 0x7d8802a6, /* mflr 12 */
6724 0x3d8c0000, /* addis 12, 12, (xxx-.Lxxx)@ha */
6725 0x398c0000, /* addi 12, 12, (xxx-.Lxxx)@l */
6726 0x7c0803a6, /* mtlr 0 */
6727 0x7d8903a6, /* mtctr 12 */
6728 0x4e800420, /* bctr */
6729 };
6730
6731 static const int stub_entry[] =
6732 {
6733 0x3d800000, /* lis 12,xxx@ha */
6734 0x398c0000, /* addi 12,12,xxx@l */
6735 0x7d8903a6, /* mtctr 12 */
6736 0x4e800420, /* bctr */
6737 };
6738
6739 struct ppc_elf_relax_info
6740 {
6741 unsigned int workaround_size;
6742 unsigned int picfixup_size;
6743 };
6744
6745 /* This function implements long branch trampolines, and the ppc476
6746 icache bug workaround. Any section needing trampolines or patch
6747 space for the workaround has its size extended so that we can
6748 add trampolines at the end of the section. */
6749
6750 static bfd_boolean
6751 ppc_elf_relax_section (bfd *abfd,
6752 asection *isec,
6753 struct bfd_link_info *link_info,
6754 bfd_boolean *again)
6755 {
6756 struct one_branch_fixup
6757 {
6758 struct one_branch_fixup *next;
6759 asection *tsec;
6760 /* Final link, can use the symbol offset. For a
6761 relocatable link we use the symbol's index. */
6762 bfd_vma toff;
6763 bfd_vma trampoff;
6764 };
6765
6766 Elf_Internal_Shdr *symtab_hdr;
6767 bfd_byte *contents = NULL;
6768 Elf_Internal_Sym *isymbuf = NULL;
6769 Elf_Internal_Rela *internal_relocs = NULL;
6770 Elf_Internal_Rela *irel, *irelend = NULL;
6771 struct one_branch_fixup *branch_fixups = NULL;
6772 struct ppc_elf_relax_info *relax_info = NULL;
6773 unsigned changes = 0;
6774 bfd_boolean workaround_change;
6775 struct ppc_elf_link_hash_table *htab;
6776 bfd_size_type trampbase, trampoff, newsize, picfixup_size;
6777 asection *got2;
6778 bfd_boolean maybe_pasted;
6779
6780 *again = FALSE;
6781
6782 /* No need to do anything with non-alloc or non-code sections. */
6783 if ((isec->flags & SEC_ALLOC) == 0
6784 || (isec->flags & SEC_CODE) == 0
6785 || (isec->flags & SEC_LINKER_CREATED) != 0
6786 || isec->size < 4)
6787 return TRUE;
6788
6789 /* We cannot represent the required PIC relocs in the output, so don't
6790 do anything. The linker doesn't support mixing -shared and -r
6791 anyway. */
6792 if (bfd_link_relocatable (link_info) && bfd_link_pic (link_info))
6793 return TRUE;
6794
6795 htab = ppc_elf_hash_table (link_info);
6796 if (htab == NULL)
6797 return TRUE;
6798
6799 isec->size = (isec->size + 3) & -4;
6800 if (isec->rawsize == 0)
6801 isec->rawsize = isec->size;
6802 trampbase = isec->size;
6803
6804 BFD_ASSERT (isec->sec_info_type == SEC_INFO_TYPE_NONE
6805 || isec->sec_info_type == SEC_INFO_TYPE_TARGET);
6806 isec->sec_info_type = SEC_INFO_TYPE_TARGET;
6807
6808 if (htab->params->ppc476_workaround
6809 || htab->params->pic_fixup > 0)
6810 {
6811 if (elf_section_data (isec)->sec_info == NULL)
6812 {
6813 elf_section_data (isec)->sec_info
6814 = bfd_zalloc (abfd, sizeof (struct ppc_elf_relax_info));
6815 if (elf_section_data (isec)->sec_info == NULL)
6816 return FALSE;
6817 }
6818 relax_info = elf_section_data (isec)->sec_info;
6819 trampbase -= relax_info->workaround_size;
6820 }
6821
6822 maybe_pasted = (strcmp (isec->output_section->name, ".init") == 0
6823 || strcmp (isec->output_section->name, ".fini") == 0);
6824 /* Space for a branch around any trampolines. */
6825 trampoff = trampbase;
6826 if (maybe_pasted && trampbase == isec->rawsize)
6827 trampoff += 4;
6828
6829 symtab_hdr = &elf_symtab_hdr (abfd);
6830 picfixup_size = 0;
6831 if (htab->params->branch_trampolines
6832 || htab->params->pic_fixup > 0)
6833 {
6834 /* Get a copy of the native relocations. */
6835 if (isec->reloc_count != 0)
6836 {
6837 internal_relocs = _bfd_elf_link_read_relocs (abfd, isec, NULL, NULL,
6838 link_info->keep_memory);
6839 if (internal_relocs == NULL)
6840 goto error_return;
6841 }
6842
6843 got2 = bfd_get_section_by_name (abfd, ".got2");
6844
6845 irelend = internal_relocs + isec->reloc_count;
6846 for (irel = internal_relocs; irel < irelend; irel++)
6847 {
6848 unsigned long r_type = ELF32_R_TYPE (irel->r_info);
6849 bfd_vma toff, roff;
6850 asection *tsec;
6851 struct one_branch_fixup *f;
6852 size_t insn_offset = 0;
6853 bfd_vma max_branch_offset = 0, val;
6854 bfd_byte *hit_addr;
6855 unsigned long t0;
6856 struct elf_link_hash_entry *h;
6857 struct plt_entry **plist;
6858 unsigned char sym_type;
6859
6860 switch (r_type)
6861 {
6862 case R_PPC_REL24:
6863 case R_PPC_LOCAL24PC:
6864 case R_PPC_PLTREL24:
6865 max_branch_offset = 1 << 25;
6866 break;
6867
6868 case R_PPC_REL14:
6869 case R_PPC_REL14_BRTAKEN:
6870 case R_PPC_REL14_BRNTAKEN:
6871 max_branch_offset = 1 << 15;
6872 break;
6873
6874 case R_PPC_ADDR16_HA:
6875 if (htab->params->pic_fixup > 0)
6876 break;
6877 continue;
6878
6879 default:
6880 continue;
6881 }
6882
6883 /* Get the value of the symbol referred to by the reloc. */
6884 h = NULL;
6885 if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
6886 {
6887 /* A local symbol. */
6888 Elf_Internal_Sym *isym;
6889
6890 /* Read this BFD's local symbols. */
6891 if (isymbuf == NULL)
6892 {
6893 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
6894 if (isymbuf == NULL)
6895 isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
6896 symtab_hdr->sh_info, 0,
6897 NULL, NULL, NULL);
6898 if (isymbuf == 0)
6899 goto error_return;
6900 }
6901 isym = isymbuf + ELF32_R_SYM (irel->r_info);
6902 if (isym->st_shndx == SHN_UNDEF)
6903 tsec = bfd_und_section_ptr;
6904 else if (isym->st_shndx == SHN_ABS)
6905 tsec = bfd_abs_section_ptr;
6906 else if (isym->st_shndx == SHN_COMMON)
6907 tsec = bfd_com_section_ptr;
6908 else
6909 tsec = bfd_section_from_elf_index (abfd, isym->st_shndx);
6910
6911 toff = isym->st_value;
6912 sym_type = ELF_ST_TYPE (isym->st_info);
6913 }
6914 else
6915 {
6916 /* Global symbol handling. */
6917 unsigned long indx;
6918
6919 indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
6920 h = elf_sym_hashes (abfd)[indx];
6921
6922 while (h->root.type == bfd_link_hash_indirect
6923 || h->root.type == bfd_link_hash_warning)
6924 h = (struct elf_link_hash_entry *) h->root.u.i.link;
6925
6926 if (h->root.type == bfd_link_hash_defined
6927 || h->root.type == bfd_link_hash_defweak)
6928 {
6929 tsec = h->root.u.def.section;
6930 toff = h->root.u.def.value;
6931 }
6932 else if (h->root.type == bfd_link_hash_undefined
6933 || h->root.type == bfd_link_hash_undefweak)
6934 {
6935 tsec = bfd_und_section_ptr;
6936 toff = bfd_link_relocatable (link_info) ? indx : 0;
6937 }
6938 else
6939 continue;
6940
6941 /* If this branch is to __tls_get_addr then we may later
6942 optimise away the call. We won't be needing a long-
6943 branch stub in that case. */
6944 if (bfd_link_executable (link_info)
6945 && h == htab->tls_get_addr
6946 && irel != internal_relocs)
6947 {
6948 unsigned long t_symndx = ELF32_R_SYM (irel[-1].r_info);
6949 unsigned long t_rtype = ELF32_R_TYPE (irel[-1].r_info);
6950 unsigned int tls_mask = 0;
6951
6952 /* The previous reloc should be one of R_PPC_TLSGD or
6953 R_PPC_TLSLD, or for older object files, a reloc
6954 on the __tls_get_addr arg setup insn. Get tls
6955 mask bits from the symbol on that reloc. */
6956 if (t_symndx < symtab_hdr->sh_info)
6957 {
6958 bfd_vma *local_got_offsets = elf_local_got_offsets (abfd);
6959
6960 if (local_got_offsets != NULL)
6961 {
6962 struct plt_entry **local_plt = (struct plt_entry **)
6963 (local_got_offsets + symtab_hdr->sh_info);
6964 char *lgot_masks = (char *)
6965 (local_plt + symtab_hdr->sh_info);
6966 tls_mask = lgot_masks[t_symndx];
6967 }
6968 }
6969 else
6970 {
6971 struct elf_link_hash_entry *th
6972 = elf_sym_hashes (abfd)[t_symndx - symtab_hdr->sh_info];
6973
6974 while (th->root.type == bfd_link_hash_indirect
6975 || th->root.type == bfd_link_hash_warning)
6976 th = (struct elf_link_hash_entry *) th->root.u.i.link;
6977
6978 tls_mask
6979 = ((struct ppc_elf_link_hash_entry *) th)->tls_mask;
6980 }
6981
6982 /* The mask bits tell us if the call will be
6983 optimised away. */
6984 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0
6985 && (t_rtype == R_PPC_TLSGD
6986 || t_rtype == R_PPC_GOT_TLSGD16
6987 || t_rtype == R_PPC_GOT_TLSGD16_LO))
6988 continue;
6989 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0
6990 && (t_rtype == R_PPC_TLSLD
6991 || t_rtype == R_PPC_GOT_TLSLD16
6992 || t_rtype == R_PPC_GOT_TLSLD16_LO))
6993 continue;
6994 }
6995
6996 sym_type = h->type;
6997 }
6998
6999 if (r_type == R_PPC_ADDR16_HA)
7000 {
7001 if (h != NULL
7002 && !h->def_regular
7003 && h->protected_def
7004 && ppc_elf_hash_entry (h)->has_addr16_ha
7005 && ppc_elf_hash_entry (h)->has_addr16_lo)
7006 picfixup_size += 12;
7007 continue;
7008 }
7009
7010 /* The condition here under which we call find_plt_ent must
7011 match that in relocate_section. If we call find_plt_ent here
7012 but not in relocate_section, or vice versa, then the branch
7013 destination used here may be incorrect. */
7014 plist = NULL;
7015 if (h != NULL)
7016 {
7017 /* We know is_branch_reloc (r_type) is true. */
7018 if (h->type == STT_GNU_IFUNC
7019 || r_type == R_PPC_PLTREL24)
7020 plist = &h->plt.plist;
7021 }
7022 else if (sym_type == STT_GNU_IFUNC
7023 && elf_local_got_offsets (abfd) != NULL)
7024 {
7025 bfd_vma *local_got_offsets = elf_local_got_offsets (abfd);
7026 struct plt_entry **local_plt = (struct plt_entry **)
7027 (local_got_offsets + symtab_hdr->sh_info);
7028 plist = local_plt + ELF32_R_SYM (irel->r_info);
7029 }
7030 if (plist != NULL)
7031 {
7032 bfd_vma addend = 0;
7033 struct plt_entry *ent;
7034
7035 if (r_type == R_PPC_PLTREL24 && bfd_link_pic (link_info))
7036 addend = irel->r_addend;
7037 ent = find_plt_ent (plist, got2, addend);
7038 if (ent != NULL)
7039 {
7040 if (htab->plt_type == PLT_NEW
7041 || h == NULL
7042 || !htab->elf.dynamic_sections_created
7043 || h->dynindx == -1)
7044 {
7045 tsec = htab->glink;
7046 toff = ent->glink_offset;
7047 }
7048 else
7049 {
7050 tsec = htab->elf.splt;
7051 toff = ent->plt.offset;
7052 }
7053 }
7054 }
7055
7056 /* If the branch and target are in the same section, you have
7057 no hope of adding stubs. We'll error out later should the
7058 branch overflow. */
7059 if (tsec == isec)
7060 continue;
7061
7062 /* There probably isn't any reason to handle symbols in
7063 SEC_MERGE sections; SEC_MERGE doesn't seem a likely
7064 attribute for a code section, and we are only looking at
7065 branches. However, implement it correctly here as a
7066 reference for other target relax_section functions. */
7067 if (0 && tsec->sec_info_type == SEC_INFO_TYPE_MERGE)
7068 {
7069 /* At this stage in linking, no SEC_MERGE symbol has been
7070 adjusted, so all references to such symbols need to be
7071 passed through _bfd_merged_section_offset. (Later, in
7072 relocate_section, all SEC_MERGE symbols *except* for
7073 section symbols have been adjusted.)
7074
7075 gas may reduce relocations against symbols in SEC_MERGE
7076 sections to a relocation against the section symbol when
7077 the original addend was zero. When the reloc is against
7078 a section symbol we should include the addend in the
7079 offset passed to _bfd_merged_section_offset, since the
7080 location of interest is the original symbol. On the
7081 other hand, an access to "sym+addend" where "sym" is not
7082 a section symbol should not include the addend; Such an
7083 access is presumed to be an offset from "sym"; The
7084 location of interest is just "sym". */
7085 if (sym_type == STT_SECTION)
7086 toff += irel->r_addend;
7087
7088 toff
7089 = _bfd_merged_section_offset (abfd, &tsec,
7090 elf_section_data (tsec)->sec_info,
7091 toff);
7092
7093 if (sym_type != STT_SECTION)
7094 toff += irel->r_addend;
7095 }
7096 /* PLTREL24 addends are special. */
7097 else if (r_type != R_PPC_PLTREL24)
7098 toff += irel->r_addend;
7099
7100 /* Attempted -shared link of non-pic code loses. */
7101 if ((!bfd_link_relocatable (link_info)
7102 && tsec == bfd_und_section_ptr)
7103 || tsec->output_section == NULL
7104 || (tsec->owner != NULL
7105 && (tsec->owner->flags & BFD_PLUGIN) != 0))
7106 continue;
7107
7108 roff = irel->r_offset;
7109
7110 /* If the branch is in range, no need to do anything. */
7111 if (tsec != bfd_und_section_ptr
7112 && (!bfd_link_relocatable (link_info)
7113 /* A relocatable link may have sections moved during
7114 final link, so do not presume they remain in range. */
7115 || tsec->output_section == isec->output_section))
7116 {
7117 bfd_vma symaddr, reladdr;
7118
7119 symaddr = tsec->output_section->vma + tsec->output_offset + toff;
7120 reladdr = isec->output_section->vma + isec->output_offset + roff;
7121 if (symaddr - reladdr + max_branch_offset
7122 < 2 * max_branch_offset)
7123 continue;
7124 }
7125
7126 /* Look for an existing fixup to this address. */
7127 for (f = branch_fixups; f ; f = f->next)
7128 if (f->tsec == tsec && f->toff == toff)
7129 break;
7130
7131 if (f == NULL)
7132 {
7133 size_t size;
7134 unsigned long stub_rtype;
7135
7136 val = trampoff - roff;
7137 if (val >= max_branch_offset)
7138 /* Oh dear, we can't reach a trampoline. Don't try to add
7139 one. We'll report an error later. */
7140 continue;
7141
7142 if (bfd_link_pic (link_info))
7143 {
7144 size = 4 * ARRAY_SIZE (shared_stub_entry);
7145 insn_offset = 12;
7146 }
7147 else
7148 {
7149 size = 4 * ARRAY_SIZE (stub_entry);
7150 insn_offset = 0;
7151 }
7152 stub_rtype = R_PPC_RELAX;
7153 if (tsec == htab->elf.splt
7154 || tsec == htab->glink)
7155 {
7156 stub_rtype = R_PPC_RELAX_PLT;
7157 if (r_type == R_PPC_PLTREL24)
7158 stub_rtype = R_PPC_RELAX_PLTREL24;
7159 }
7160
7161 /* Hijack the old relocation. Since we need two
7162 relocations for this use a "composite" reloc. */
7163 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
7164 stub_rtype);
7165 irel->r_offset = trampoff + insn_offset;
7166 if (r_type == R_PPC_PLTREL24
7167 && stub_rtype != R_PPC_RELAX_PLTREL24)
7168 irel->r_addend = 0;
7169
7170 /* Record the fixup so we don't do it again this section. */
7171 f = bfd_malloc (sizeof (*f));
7172 f->next = branch_fixups;
7173 f->tsec = tsec;
7174 f->toff = toff;
7175 f->trampoff = trampoff;
7176 branch_fixups = f;
7177
7178 trampoff += size;
7179 changes++;
7180 }
7181 else
7182 {
7183 val = f->trampoff - roff;
7184 if (val >= max_branch_offset)
7185 continue;
7186
7187 /* Nop out the reloc, since we're finalizing things here. */
7188 irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
7189 }
7190
7191 /* Get the section contents. */
7192 if (contents == NULL)
7193 {
7194 /* Get cached copy if it exists. */
7195 if (elf_section_data (isec)->this_hdr.contents != NULL)
7196 contents = elf_section_data (isec)->this_hdr.contents;
7197 /* Go get them off disk. */
7198 else if (!bfd_malloc_and_get_section (abfd, isec, &contents))
7199 goto error_return;
7200 }
7201
7202 /* Fix up the existing branch to hit the trampoline. */
7203 hit_addr = contents + roff;
7204 switch (r_type)
7205 {
7206 case R_PPC_REL24:
7207 case R_PPC_LOCAL24PC:
7208 case R_PPC_PLTREL24:
7209 t0 = bfd_get_32 (abfd, hit_addr);
7210 t0 &= ~0x3fffffc;
7211 t0 |= val & 0x3fffffc;
7212 bfd_put_32 (abfd, t0, hit_addr);
7213 break;
7214
7215 case R_PPC_REL14:
7216 case R_PPC_REL14_BRTAKEN:
7217 case R_PPC_REL14_BRNTAKEN:
7218 t0 = bfd_get_32 (abfd, hit_addr);
7219 t0 &= ~0xfffc;
7220 t0 |= val & 0xfffc;
7221 bfd_put_32 (abfd, t0, hit_addr);
7222 break;
7223 }
7224 }
7225
7226 while (branch_fixups != NULL)
7227 {
7228 struct one_branch_fixup *f = branch_fixups;
7229 branch_fixups = branch_fixups->next;
7230 free (f);
7231 }
7232 }
7233
7234 workaround_change = FALSE;
7235 newsize = trampoff;
7236 if (htab->params->ppc476_workaround
7237 && (!bfd_link_relocatable (link_info)
7238 || isec->output_section->alignment_power >= htab->params->pagesize_p2))
7239 {
7240 bfd_vma addr, end_addr;
7241 unsigned int crossings;
7242 bfd_vma pagesize = (bfd_vma) 1 << htab->params->pagesize_p2;
7243
7244 addr = isec->output_section->vma + isec->output_offset;
7245 end_addr = addr + trampoff;
7246 addr &= -pagesize;
7247 crossings = ((end_addr & -pagesize) - addr) >> htab->params->pagesize_p2;
7248 if (crossings != 0)
7249 {
7250 /* Keep space aligned, to ensure the patch code itself does
7251 not cross a page. Don't decrease size calculated on a
7252 previous pass as otherwise we might never settle on a layout. */
7253 newsize = 15 - ((end_addr - 1) & 15);
7254 newsize += crossings * 16;
7255 if (relax_info->workaround_size < newsize)
7256 {
7257 relax_info->workaround_size = newsize;
7258 workaround_change = TRUE;
7259 }
7260 /* Ensure relocate_section is called. */
7261 isec->flags |= SEC_RELOC;
7262 }
7263 newsize = trampoff + relax_info->workaround_size;
7264 }
7265
7266 if (htab->params->pic_fixup > 0)
7267 {
7268 picfixup_size -= relax_info->picfixup_size;
7269 if (picfixup_size != 0)
7270 relax_info->picfixup_size += picfixup_size;
7271 newsize += relax_info->picfixup_size;
7272 }
7273
7274 if (changes != 0 || picfixup_size != 0 || workaround_change)
7275 isec->size = newsize;
7276
7277 if (isymbuf != NULL
7278 && symtab_hdr->contents != (unsigned char *) isymbuf)
7279 {
7280 if (! link_info->keep_memory)
7281 free (isymbuf);
7282 else
7283 {
7284 /* Cache the symbols for elf_link_input_bfd. */
7285 symtab_hdr->contents = (unsigned char *) isymbuf;
7286 }
7287 }
7288
7289 if (contents != NULL
7290 && elf_section_data (isec)->this_hdr.contents != contents)
7291 {
7292 if (!changes && !link_info->keep_memory)
7293 free (contents);
7294 else
7295 {
7296 /* Cache the section contents for elf_link_input_bfd. */
7297 elf_section_data (isec)->this_hdr.contents = contents;
7298 }
7299 }
7300
7301 changes += picfixup_size;
7302 if (changes != 0)
7303 {
7304 /* Append sufficient NOP relocs so we can write out relocation
7305 information for the trampolines. */
7306 Elf_Internal_Shdr *rel_hdr;
7307 Elf_Internal_Rela *new_relocs = bfd_malloc ((changes + isec->reloc_count)
7308 * sizeof (*new_relocs));
7309 unsigned ix;
7310
7311 if (!new_relocs)
7312 goto error_return;
7313 memcpy (new_relocs, internal_relocs,
7314 isec->reloc_count * sizeof (*new_relocs));
7315 for (ix = changes; ix--;)
7316 {
7317 irel = new_relocs + ix + isec->reloc_count;
7318
7319 irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
7320 }
7321 if (internal_relocs != elf_section_data (isec)->relocs)
7322 free (internal_relocs);
7323 elf_section_data (isec)->relocs = new_relocs;
7324 isec->reloc_count += changes;
7325 rel_hdr = _bfd_elf_single_rel_hdr (isec);
7326 rel_hdr->sh_size += changes * rel_hdr->sh_entsize;
7327 }
7328 else if (internal_relocs != NULL
7329 && elf_section_data (isec)->relocs != internal_relocs)
7330 free (internal_relocs);
7331
7332 *again = changes != 0 || workaround_change;
7333 return TRUE;
7334
7335 error_return:
7336 while (branch_fixups != NULL)
7337 {
7338 struct one_branch_fixup *f = branch_fixups;
7339 branch_fixups = branch_fixups->next;
7340 free (f);
7341 }
7342 if (isymbuf != NULL && (unsigned char *) isymbuf != symtab_hdr->contents)
7343 free (isymbuf);
7344 if (contents != NULL
7345 && elf_section_data (isec)->this_hdr.contents != contents)
7346 free (contents);
7347 if (internal_relocs != NULL
7348 && elf_section_data (isec)->relocs != internal_relocs)
7349 free (internal_relocs);
7350 return FALSE;
7351 }
7352 \f
7353 /* What to do when ld finds relocations against symbols defined in
7354 discarded sections. */
7355
7356 static unsigned int
7357 ppc_elf_action_discarded (asection *sec)
7358 {
7359 if (strcmp (".fixup", sec->name) == 0)
7360 return 0;
7361
7362 if (strcmp (".got2", sec->name) == 0)
7363 return 0;
7364
7365 return _bfd_elf_default_action_discarded (sec);
7366 }
7367 \f
7368 /* Fill in the address for a pointer generated in a linker section. */
7369
7370 static bfd_vma
7371 elf_finish_pointer_linker_section (bfd *input_bfd,
7372 elf_linker_section_t *lsect,
7373 struct elf_link_hash_entry *h,
7374 bfd_vma relocation,
7375 const Elf_Internal_Rela *rel)
7376 {
7377 elf_linker_section_pointers_t *linker_section_ptr;
7378
7379 BFD_ASSERT (lsect != NULL);
7380
7381 if (h != NULL)
7382 {
7383 /* Handle global symbol. */
7384 struct ppc_elf_link_hash_entry *eh;
7385
7386 eh = (struct ppc_elf_link_hash_entry *) h;
7387 BFD_ASSERT (eh->elf.def_regular);
7388 linker_section_ptr = eh->linker_section_pointer;
7389 }
7390 else
7391 {
7392 /* Handle local symbol. */
7393 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
7394
7395 BFD_ASSERT (is_ppc_elf (input_bfd));
7396 BFD_ASSERT (elf_local_ptr_offsets (input_bfd) != NULL);
7397 linker_section_ptr = elf_local_ptr_offsets (input_bfd)[r_symndx];
7398 }
7399
7400 linker_section_ptr = elf_find_pointer_linker_section (linker_section_ptr,
7401 rel->r_addend,
7402 lsect);
7403 BFD_ASSERT (linker_section_ptr != NULL);
7404
7405 /* Offset will always be a multiple of four, so use the bottom bit
7406 as a "written" flag. */
7407 if ((linker_section_ptr->offset & 1) == 0)
7408 {
7409 bfd_put_32 (lsect->section->owner,
7410 relocation + linker_section_ptr->addend,
7411 lsect->section->contents + linker_section_ptr->offset);
7412 linker_section_ptr->offset += 1;
7413 }
7414
7415 relocation = (lsect->section->output_section->vma
7416 + lsect->section->output_offset
7417 + linker_section_ptr->offset - 1
7418 - SYM_VAL (lsect->sym));
7419
7420 #ifdef DEBUG
7421 fprintf (stderr,
7422 "Finish pointer in linker section %s, offset = %ld (0x%lx)\n",
7423 lsect->name, (long) relocation, (long) relocation);
7424 #endif
7425
7426 return relocation;
7427 }
7428
7429 #define PPC_LO(v) ((v) & 0xffff)
7430 #define PPC_HI(v) (((v) >> 16) & 0xffff)
7431 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
7432
7433 static void
7434 write_glink_stub (struct elf_link_hash_entry *h, struct plt_entry *ent,
7435 asection *plt_sec, unsigned char *p,
7436 struct bfd_link_info *info)
7437 {
7438 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
7439 bfd *output_bfd = info->output_bfd;
7440 bfd_vma plt;
7441 unsigned char *end = p + GLINK_ENTRY_SIZE (htab, h);
7442
7443 if (h != NULL
7444 && h == htab->tls_get_addr
7445 && !htab->params->no_tls_get_addr_opt)
7446 {
7447 bfd_put_32 (output_bfd, LWZ_11_3, p);
7448 p += 4;
7449 bfd_put_32 (output_bfd, LWZ_12_3 + 4, p);
7450 p += 4;
7451 bfd_put_32 (output_bfd, MR_0_3, p);
7452 p += 4;
7453 bfd_put_32 (output_bfd, CMPWI_11_0, p);
7454 p += 4;
7455 bfd_put_32 (output_bfd, ADD_3_12_2, p);
7456 p += 4;
7457 bfd_put_32 (output_bfd, BEQLR, p);
7458 p += 4;
7459 bfd_put_32 (output_bfd, MR_3_0, p);
7460 p += 4;
7461 bfd_put_32 (output_bfd, NOP, p);
7462 p += 4;
7463 }
7464
7465 plt = ((ent->plt.offset & ~1)
7466 + plt_sec->output_section->vma
7467 + plt_sec->output_offset);
7468
7469 if (bfd_link_pic (info))
7470 {
7471 bfd_vma got = 0;
7472
7473 if (ent->addend >= 32768)
7474 got = (ent->addend
7475 + ent->sec->output_section->vma
7476 + ent->sec->output_offset);
7477 else if (htab->elf.hgot != NULL)
7478 got = SYM_VAL (htab->elf.hgot);
7479
7480 plt -= got;
7481
7482 if (plt + 0x8000 < 0x10000)
7483 bfd_put_32 (output_bfd, LWZ_11_30 + PPC_LO (plt), p);
7484 else
7485 {
7486 bfd_put_32 (output_bfd, ADDIS_11_30 + PPC_HA (plt), p);
7487 p += 4;
7488 bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
7489 }
7490 }
7491 else
7492 {
7493 bfd_put_32 (output_bfd, LIS_11 + PPC_HA (plt), p);
7494 p += 4;
7495 bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
7496 }
7497 p += 4;
7498 bfd_put_32 (output_bfd, MTCTR_11, p);
7499 p += 4;
7500 bfd_put_32 (output_bfd, BCTR, p);
7501 p += 4;
7502 while (p < end)
7503 {
7504 bfd_put_32 (output_bfd, htab->params->ppc476_workaround ? BA : NOP, p);
7505 p += 4;
7506 }
7507 }
7508
7509 /* Return true if symbol is defined statically. */
7510
7511 static bfd_boolean
7512 is_static_defined (struct elf_link_hash_entry *h)
7513 {
7514 return ((h->root.type == bfd_link_hash_defined
7515 || h->root.type == bfd_link_hash_defweak)
7516 && h->root.u.def.section != NULL
7517 && h->root.u.def.section->output_section != NULL);
7518 }
7519
7520 /* If INSN is an opcode that may be used with an @tls operand, return
7521 the transformed insn for TLS optimisation, otherwise return 0. If
7522 REG is non-zero only match an insn with RB or RA equal to REG. */
7523
7524 unsigned int
7525 _bfd_elf_ppc_at_tls_transform (unsigned int insn, unsigned int reg)
7526 {
7527 unsigned int rtra;
7528
7529 if ((insn & (0x3f << 26)) != 31 << 26)
7530 return 0;
7531
7532 if (reg == 0 || ((insn >> 11) & 0x1f) == reg)
7533 rtra = insn & ((1 << 26) - (1 << 16));
7534 else if (((insn >> 16) & 0x1f) == reg)
7535 rtra = (insn & (0x1f << 21)) | ((insn & (0x1f << 11)) << 5);
7536 else
7537 return 0;
7538
7539 if ((insn & (0x3ff << 1)) == 266 << 1)
7540 /* add -> addi. */
7541 insn = 14 << 26;
7542 else if ((insn & (0x1f << 1)) == 23 << 1
7543 && ((insn & (0x1f << 6)) < 14 << 6
7544 || ((insn & (0x1f << 6)) >= 16 << 6
7545 && (insn & (0x1f << 6)) < 24 << 6)))
7546 /* load and store indexed -> dform. */
7547 insn = (32 | ((insn >> 6) & 0x1f)) << 26;
7548 else if ((insn & (((0x1a << 5) | 0x1f) << 1)) == 21 << 1)
7549 /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
7550 insn = ((58 | ((insn >> 6) & 4)) << 26) | ((insn >> 6) & 1);
7551 else if ((insn & (((0x1f << 5) | 0x1f) << 1)) == 341 << 1)
7552 /* lwax -> lwa. */
7553 insn = (58 << 26) | 2;
7554 else
7555 return 0;
7556 insn |= rtra;
7557 return insn;
7558 }
7559
7560 /* If INSN is an opcode that may be used with an @tprel operand, return
7561 the transformed insn for an undefined weak symbol, ie. with the
7562 thread pointer REG operand removed. Otherwise return 0. */
7563
7564 unsigned int
7565 _bfd_elf_ppc_at_tprel_transform (unsigned int insn, unsigned int reg)
7566 {
7567 if ((insn & (0x1f << 16)) == reg << 16
7568 && ((insn & (0x3f << 26)) == 14u << 26 /* addi */
7569 || (insn & (0x3f << 26)) == 15u << 26 /* addis */
7570 || (insn & (0x3f << 26)) == 32u << 26 /* lwz */
7571 || (insn & (0x3f << 26)) == 34u << 26 /* lbz */
7572 || (insn & (0x3f << 26)) == 36u << 26 /* stw */
7573 || (insn & (0x3f << 26)) == 38u << 26 /* stb */
7574 || (insn & (0x3f << 26)) == 40u << 26 /* lhz */
7575 || (insn & (0x3f << 26)) == 42u << 26 /* lha */
7576 || (insn & (0x3f << 26)) == 44u << 26 /* sth */
7577 || (insn & (0x3f << 26)) == 46u << 26 /* lmw */
7578 || (insn & (0x3f << 26)) == 47u << 26 /* stmw */
7579 || (insn & (0x3f << 26)) == 48u << 26 /* lfs */
7580 || (insn & (0x3f << 26)) == 50u << 26 /* lfd */
7581 || (insn & (0x3f << 26)) == 52u << 26 /* stfs */
7582 || (insn & (0x3f << 26)) == 54u << 26 /* stfd */
7583 || ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
7584 && (insn & 3) != 1)
7585 || ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */
7586 && ((insn & 3) == 0 || (insn & 3) == 3))))
7587 {
7588 insn &= ~(0x1f << 16);
7589 }
7590 else if ((insn & (0x1f << 21)) == reg << 21
7591 && ((insn & (0x3e << 26)) == 24u << 26 /* ori, oris */
7592 || (insn & (0x3e << 26)) == 26u << 26 /* xori,xoris */
7593 || (insn & (0x3e << 26)) == 28u << 26 /* andi,andis */))
7594 {
7595 insn &= ~(0x1f << 21);
7596 insn |= (insn & (0x1f << 16)) << 5;
7597 if ((insn & (0x3e << 26)) == 26 << 26 /* xori,xoris */)
7598 insn -= 2 >> 26; /* convert to ori,oris */
7599 }
7600 else
7601 insn = 0;
7602 return insn;
7603 }
7604
7605 static bfd_boolean
7606 is_insn_ds_form (unsigned int insn)
7607 {
7608 return ((insn & (0x3f << 26)) == 58u << 26 /* ld,ldu,lwa */
7609 || (insn & (0x3f << 26)) == 62u << 26 /* std,stdu,stq */
7610 || (insn & (0x3f << 26)) == 57u << 26 /* lfdp */
7611 || (insn & (0x3f << 26)) == 61u << 26 /* stfdp */);
7612 }
7613
7614 static bfd_boolean
7615 is_insn_dq_form (unsigned int insn)
7616 {
7617 return ((insn & (0x3f << 26)) == 56u << 26 /* lq */
7618 || ((insn & (0x3f << 26)) == (61u << 26) /* lxv, stxv */
7619 && (insn & 3) == 1));
7620 }
7621
7622 /* The RELOCATE_SECTION function is called by the ELF backend linker
7623 to handle the relocations for a section.
7624
7625 The relocs are always passed as Rela structures; if the section
7626 actually uses Rel structures, the r_addend field will always be
7627 zero.
7628
7629 This function is responsible for adjust the section contents as
7630 necessary, and (if using Rela relocs and generating a
7631 relocatable output file) adjusting the reloc addend as
7632 necessary.
7633
7634 This function does not have to worry about setting the reloc
7635 address or the reloc symbol index.
7636
7637 LOCAL_SYMS is a pointer to the swapped in local symbols.
7638
7639 LOCAL_SECTIONS is an array giving the section in the input file
7640 corresponding to the st_shndx field of each local symbol.
7641
7642 The global hash table entry for the global symbols can be found
7643 via elf_sym_hashes (input_bfd).
7644
7645 When generating relocatable output, this function must handle
7646 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
7647 going to be the section symbol corresponding to the output
7648 section, which means that the addend must be adjusted
7649 accordingly. */
7650
7651 static bfd_boolean
7652 ppc_elf_relocate_section (bfd *output_bfd,
7653 struct bfd_link_info *info,
7654 bfd *input_bfd,
7655 asection *input_section,
7656 bfd_byte *contents,
7657 Elf_Internal_Rela *relocs,
7658 Elf_Internal_Sym *local_syms,
7659 asection **local_sections)
7660 {
7661 Elf_Internal_Shdr *symtab_hdr;
7662 struct elf_link_hash_entry **sym_hashes;
7663 struct ppc_elf_link_hash_table *htab;
7664 Elf_Internal_Rela *rel;
7665 Elf_Internal_Rela *wrel;
7666 Elf_Internal_Rela *relend;
7667 Elf_Internal_Rela outrel;
7668 asection *got2;
7669 bfd_vma *local_got_offsets;
7670 bfd_boolean ret = TRUE;
7671 bfd_vma d_offset = (bfd_big_endian (input_bfd) ? 2 : 0);
7672 bfd_boolean is_vxworks_tls;
7673 unsigned int picfixup_size = 0;
7674 struct ppc_elf_relax_info *relax_info = NULL;
7675
7676 #ifdef DEBUG
7677 _bfd_error_handler ("ppc_elf_relocate_section called for %pB section %pA, "
7678 "%ld relocations%s",
7679 input_bfd, input_section,
7680 (long) input_section->reloc_count,
7681 (bfd_link_relocatable (info)) ? " (relocatable)" : "");
7682 #endif
7683
7684 got2 = bfd_get_section_by_name (input_bfd, ".got2");
7685
7686 /* Initialize howto table if not already done. */
7687 if (!ppc_elf_howto_table[R_PPC_ADDR32])
7688 ppc_elf_howto_init ();
7689
7690 htab = ppc_elf_hash_table (info);
7691 local_got_offsets = elf_local_got_offsets (input_bfd);
7692 symtab_hdr = &elf_symtab_hdr (input_bfd);
7693 sym_hashes = elf_sym_hashes (input_bfd);
7694 /* We have to handle relocations in vxworks .tls_vars sections
7695 specially, because the dynamic loader is 'weird'. */
7696 is_vxworks_tls = (htab->is_vxworks && bfd_link_pic (info)
7697 && !strcmp (input_section->output_section->name,
7698 ".tls_vars"));
7699 if (input_section->sec_info_type == SEC_INFO_TYPE_TARGET)
7700 relax_info = elf_section_data (input_section)->sec_info;
7701 rel = wrel = relocs;
7702 relend = relocs + input_section->reloc_count;
7703 for (; rel < relend; wrel++, rel++)
7704 {
7705 enum elf_ppc_reloc_type r_type;
7706 bfd_vma addend;
7707 bfd_reloc_status_type r;
7708 Elf_Internal_Sym *sym;
7709 asection *sec;
7710 struct elf_link_hash_entry *h;
7711 const char *sym_name;
7712 reloc_howto_type *howto;
7713 unsigned long r_symndx;
7714 bfd_vma relocation;
7715 bfd_vma branch_bit, from;
7716 bfd_boolean unresolved_reloc;
7717 bfd_boolean warned;
7718 unsigned int tls_type, tls_mask, tls_gd;
7719 struct plt_entry **ifunc;
7720 struct reloc_howto_struct alt_howto;
7721
7722 again:
7723 r_type = ELF32_R_TYPE (rel->r_info);
7724 sym = NULL;
7725 sec = NULL;
7726 h = NULL;
7727 unresolved_reloc = FALSE;
7728 warned = FALSE;
7729 r_symndx = ELF32_R_SYM (rel->r_info);
7730
7731 if (r_symndx < symtab_hdr->sh_info)
7732 {
7733 sym = local_syms + r_symndx;
7734 sec = local_sections[r_symndx];
7735 sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
7736
7737 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
7738 }
7739 else
7740 {
7741 bfd_boolean ignored;
7742
7743 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
7744 r_symndx, symtab_hdr, sym_hashes,
7745 h, sec, relocation,
7746 unresolved_reloc, warned, ignored);
7747
7748 sym_name = h->root.root.string;
7749 }
7750
7751 if (sec != NULL && discarded_section (sec))
7752 {
7753 /* For relocs against symbols from removed linkonce sections,
7754 or sections discarded by a linker script, we just want the
7755 section contents zeroed. Avoid any special processing. */
7756 howto = NULL;
7757 if (r_type < R_PPC_max)
7758 howto = ppc_elf_howto_table[r_type];
7759
7760 _bfd_clear_contents (howto, input_bfd, input_section,
7761 contents + rel->r_offset);
7762 wrel->r_offset = rel->r_offset;
7763 wrel->r_info = 0;
7764 wrel->r_addend = 0;
7765
7766 /* For ld -r, remove relocations in debug sections against
7767 symbols defined in discarded sections. Not done for
7768 non-debug to preserve relocs in .eh_frame which the
7769 eh_frame editing code expects to be present. */
7770 if (bfd_link_relocatable (info)
7771 && (input_section->flags & SEC_DEBUGGING))
7772 wrel--;
7773
7774 continue;
7775 }
7776
7777 if (bfd_link_relocatable (info))
7778 {
7779 if (got2 != NULL
7780 && r_type == R_PPC_PLTREL24
7781 && rel->r_addend != 0)
7782 {
7783 /* R_PPC_PLTREL24 is rather special. If non-zero, the
7784 addend specifies the GOT pointer offset within .got2. */
7785 rel->r_addend += got2->output_offset;
7786 }
7787 if (r_type != R_PPC_RELAX_PLT
7788 && r_type != R_PPC_RELAX_PLTREL24
7789 && r_type != R_PPC_RELAX)
7790 goto copy_reloc;
7791 }
7792
7793 /* TLS optimizations. Replace instruction sequences and relocs
7794 based on information we collected in tls_optimize. We edit
7795 RELOCS so that --emit-relocs will output something sensible
7796 for the final instruction stream. */
7797 tls_mask = 0;
7798 tls_gd = 0;
7799 if (h != NULL)
7800 tls_mask = ((struct ppc_elf_link_hash_entry *) h)->tls_mask;
7801 else if (local_got_offsets != NULL)
7802 {
7803 struct plt_entry **local_plt;
7804 char *lgot_masks;
7805 local_plt
7806 = (struct plt_entry **) (local_got_offsets + symtab_hdr->sh_info);
7807 lgot_masks = (char *) (local_plt + symtab_hdr->sh_info);
7808 tls_mask = lgot_masks[r_symndx];
7809 }
7810
7811 /* Ensure reloc mapping code below stays sane. */
7812 if ((R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TLSGD16 & 3)
7813 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TLSGD16_LO & 3)
7814 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TLSGD16_HI & 3)
7815 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TLSGD16_HA & 3)
7816 || (R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TPREL16 & 3)
7817 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TPREL16_LO & 3)
7818 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TPREL16_HI & 3)
7819 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TPREL16_HA & 3))
7820 abort ();
7821 switch (r_type)
7822 {
7823 default:
7824 break;
7825
7826 case R_PPC_GOT_TPREL16:
7827 case R_PPC_GOT_TPREL16_LO:
7828 if ((tls_mask & TLS_TLS) != 0
7829 && (tls_mask & TLS_TPREL) == 0)
7830 {
7831 bfd_vma insn;
7832
7833 insn = bfd_get_32 (input_bfd,
7834 contents + rel->r_offset - d_offset);
7835 insn &= 31 << 21;
7836 insn |= 0x3c020000; /* addis 0,2,0 */
7837 bfd_put_32 (input_bfd, insn,
7838 contents + rel->r_offset - d_offset);
7839 r_type = R_PPC_TPREL16_HA;
7840 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7841 }
7842 break;
7843
7844 case R_PPC_TLS:
7845 if ((tls_mask & TLS_TLS) != 0
7846 && (tls_mask & TLS_TPREL) == 0)
7847 {
7848 bfd_vma insn;
7849
7850 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
7851 insn = _bfd_elf_ppc_at_tls_transform (insn, 2);
7852 if (insn == 0)
7853 abort ();
7854 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
7855 r_type = R_PPC_TPREL16_LO;
7856 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7857
7858 /* Was PPC_TLS which sits on insn boundary, now
7859 PPC_TPREL16_LO which is at low-order half-word. */
7860 rel->r_offset += d_offset;
7861 }
7862 break;
7863
7864 case R_PPC_GOT_TLSGD16_HI:
7865 case R_PPC_GOT_TLSGD16_HA:
7866 tls_gd = TLS_TPRELGD;
7867 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
7868 goto tls_gdld_hi;
7869 break;
7870
7871 case R_PPC_GOT_TLSLD16_HI:
7872 case R_PPC_GOT_TLSLD16_HA:
7873 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
7874 {
7875 tls_gdld_hi:
7876 if ((tls_mask & tls_gd) != 0)
7877 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
7878 + R_PPC_GOT_TPREL16);
7879 else
7880 {
7881 rel->r_offset -= d_offset;
7882 bfd_put_32 (input_bfd, NOP, contents + rel->r_offset);
7883 r_type = R_PPC_NONE;
7884 }
7885 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7886 }
7887 break;
7888
7889 case R_PPC_GOT_TLSGD16:
7890 case R_PPC_GOT_TLSGD16_LO:
7891 tls_gd = TLS_TPRELGD;
7892 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
7893 goto tls_ldgd_opt;
7894 break;
7895
7896 case R_PPC_GOT_TLSLD16:
7897 case R_PPC_GOT_TLSLD16_LO:
7898 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
7899 {
7900 unsigned int insn1, insn2;
7901 bfd_vma offset;
7902
7903 tls_ldgd_opt:
7904 offset = (bfd_vma) -1;
7905 /* If not using the newer R_PPC_TLSGD/LD to mark
7906 __tls_get_addr calls, we must trust that the call
7907 stays with its arg setup insns, ie. that the next
7908 reloc is the __tls_get_addr call associated with
7909 the current reloc. Edit both insns. */
7910 if (input_section->has_tls_get_addr_call
7911 && rel + 1 < relend
7912 && branch_reloc_hash_match (input_bfd, rel + 1,
7913 htab->tls_get_addr))
7914 offset = rel[1].r_offset;
7915 /* We read the low GOT_TLS insn because we need to keep
7916 the destination reg. It may be something other than
7917 the usual r3, and moved to r3 before the call by
7918 intervening code. */
7919 insn1 = bfd_get_32 (input_bfd,
7920 contents + rel->r_offset - d_offset);
7921 if ((tls_mask & tls_gd) != 0)
7922 {
7923 /* IE */
7924 insn1 &= (0x1f << 21) | (0x1f << 16);
7925 insn1 |= 32 << 26; /* lwz */
7926 if (offset != (bfd_vma) -1)
7927 {
7928 rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
7929 insn2 = 0x7c631214; /* add 3,3,2 */
7930 bfd_put_32 (input_bfd, insn2, contents + offset);
7931 }
7932 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
7933 + R_PPC_GOT_TPREL16);
7934 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7935 }
7936 else
7937 {
7938 /* LE */
7939 insn1 &= 0x1f << 21;
7940 insn1 |= 0x3c020000; /* addis r,2,0 */
7941 if (tls_gd == 0)
7942 {
7943 /* Was an LD reloc. */
7944 for (r_symndx = 0;
7945 r_symndx < symtab_hdr->sh_info;
7946 r_symndx++)
7947 if (local_sections[r_symndx] == sec)
7948 break;
7949 if (r_symndx >= symtab_hdr->sh_info)
7950 r_symndx = STN_UNDEF;
7951 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
7952 if (r_symndx != STN_UNDEF)
7953 rel->r_addend -= (local_syms[r_symndx].st_value
7954 + sec->output_offset
7955 + sec->output_section->vma);
7956 }
7957 r_type = R_PPC_TPREL16_HA;
7958 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7959 if (offset != (bfd_vma) -1)
7960 {
7961 rel[1].r_info = ELF32_R_INFO (r_symndx, R_PPC_TPREL16_LO);
7962 rel[1].r_offset = offset + d_offset;
7963 rel[1].r_addend = rel->r_addend;
7964 insn2 = 0x38630000; /* addi 3,3,0 */
7965 bfd_put_32 (input_bfd, insn2, contents + offset);
7966 }
7967 }
7968 bfd_put_32 (input_bfd, insn1,
7969 contents + rel->r_offset - d_offset);
7970 if (tls_gd == 0)
7971 {
7972 /* We changed the symbol on an LD reloc. Start over
7973 in order to get h, sym, sec etc. right. */
7974 goto again;
7975 }
7976 }
7977 break;
7978
7979 case R_PPC_TLSGD:
7980 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0
7981 && rel + 1 < relend)
7982 {
7983 unsigned int insn2;
7984 bfd_vma offset = rel->r_offset;
7985
7986 if ((tls_mask & TLS_TPRELGD) != 0)
7987 {
7988 /* IE */
7989 r_type = R_PPC_NONE;
7990 insn2 = 0x7c631214; /* add 3,3,2 */
7991 }
7992 else
7993 {
7994 /* LE */
7995 r_type = R_PPC_TPREL16_LO;
7996 rel->r_offset += d_offset;
7997 insn2 = 0x38630000; /* addi 3,3,0 */
7998 }
7999 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
8000 bfd_put_32 (input_bfd, insn2, contents + offset);
8001 /* Zap the reloc on the _tls_get_addr call too. */
8002 BFD_ASSERT (offset == rel[1].r_offset);
8003 rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
8004 }
8005 break;
8006
8007 case R_PPC_TLSLD:
8008 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0
8009 && rel + 1 < relend)
8010 {
8011 unsigned int insn2;
8012
8013 for (r_symndx = 0;
8014 r_symndx < symtab_hdr->sh_info;
8015 r_symndx++)
8016 if (local_sections[r_symndx] == sec)
8017 break;
8018 if (r_symndx >= symtab_hdr->sh_info)
8019 r_symndx = STN_UNDEF;
8020 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
8021 if (r_symndx != STN_UNDEF)
8022 rel->r_addend -= (local_syms[r_symndx].st_value
8023 + sec->output_offset
8024 + sec->output_section->vma);
8025
8026 rel->r_info = ELF32_R_INFO (r_symndx, R_PPC_TPREL16_LO);
8027 rel->r_offset += d_offset;
8028 insn2 = 0x38630000; /* addi 3,3,0 */
8029 bfd_put_32 (input_bfd, insn2,
8030 contents + rel->r_offset - d_offset);
8031 /* Zap the reloc on the _tls_get_addr call too. */
8032 BFD_ASSERT (rel->r_offset - d_offset == rel[1].r_offset);
8033 rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
8034 goto again;
8035 }
8036 break;
8037 }
8038
8039 /* Handle other relocations that tweak non-addend part of insn. */
8040 branch_bit = 0;
8041 switch (r_type)
8042 {
8043 default:
8044 break;
8045
8046 /* Branch taken prediction relocations. */
8047 case R_PPC_ADDR14_BRTAKEN:
8048 case R_PPC_REL14_BRTAKEN:
8049 branch_bit = BRANCH_PREDICT_BIT;
8050 /* Fall through. */
8051
8052 /* Branch not taken prediction relocations. */
8053 case R_PPC_ADDR14_BRNTAKEN:
8054 case R_PPC_REL14_BRNTAKEN:
8055 {
8056 bfd_vma insn;
8057
8058 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
8059 insn &= ~BRANCH_PREDICT_BIT;
8060 insn |= branch_bit;
8061
8062 from = (rel->r_offset
8063 + input_section->output_offset
8064 + input_section->output_section->vma);
8065
8066 /* Invert 'y' bit if not the default. */
8067 if ((bfd_signed_vma) (relocation + rel->r_addend - from) < 0)
8068 insn ^= BRANCH_PREDICT_BIT;
8069
8070 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
8071 break;
8072 }
8073 }
8074
8075 if (ELIMINATE_COPY_RELOCS
8076 && h != NULL
8077 && !h->def_regular
8078 && h->protected_def
8079 && ppc_elf_hash_entry (h)->has_addr16_ha
8080 && ppc_elf_hash_entry (h)->has_addr16_lo
8081 && htab->params->pic_fixup > 0)
8082 {
8083 /* Convert lis;addi or lis;load/store accessing a protected
8084 variable defined in a shared library to PIC. */
8085 unsigned int insn;
8086
8087 if (r_type == R_PPC_ADDR16_HA)
8088 {
8089 insn = bfd_get_32 (input_bfd,
8090 contents + rel->r_offset - d_offset);
8091 if ((insn & (0x3f << 26)) == (15u << 26)
8092 && (insn & (0x1f << 16)) == 0 /* lis */)
8093 {
8094 bfd_byte *p;
8095 bfd_vma off;
8096 bfd_vma got_addr;
8097
8098 p = (contents + input_section->size
8099 - relax_info->workaround_size
8100 - relax_info->picfixup_size
8101 + picfixup_size);
8102 off = (p - contents) - (rel->r_offset - d_offset);
8103 if (off > 0x1fffffc || (off & 3) != 0)
8104 info->callbacks->einfo
8105 (_("%H: fixup branch overflow\n"),
8106 input_bfd, input_section, rel->r_offset);
8107
8108 bfd_put_32 (input_bfd, B | off,
8109 contents + rel->r_offset - d_offset);
8110 got_addr = (htab->elf.sgot->output_section->vma
8111 + htab->elf.sgot->output_offset
8112 + (h->got.offset & ~1));
8113 wrel->r_offset = (p - contents) + d_offset;
8114 wrel->r_info = ELF32_R_INFO (0, R_PPC_ADDR16_HA);
8115 wrel->r_addend = got_addr;
8116 insn &= ~0xffff;
8117 insn |= ((unsigned int) (got_addr + 0x8000) >> 16) & 0xffff;
8118 bfd_put_32 (input_bfd, insn, p);
8119
8120 /* Convert lis to lwz, loading address from GOT. */
8121 insn &= ~0xffff;
8122 insn ^= (32u ^ 15u) << 26;
8123 insn |= (insn & (0x1f << 21)) >> 5;
8124 insn |= got_addr & 0xffff;
8125 bfd_put_32 (input_bfd, insn, p + 4);
8126
8127 bfd_put_32 (input_bfd, B | ((-4 - off) & 0x3ffffff), p + 8);
8128 picfixup_size += 12;
8129
8130 /* Use one of the spare relocs, so --emit-relocs
8131 output is reasonable. */
8132 memmove (rel + 1, rel, (relend - rel - 1) * sizeof (*rel));
8133 wrel++, rel++;
8134 rel->r_offset = wrel[-1].r_offset + 4;
8135 rel->r_info = ELF32_R_INFO (0, R_PPC_ADDR16_LO);
8136 rel->r_addend = wrel[-1].r_addend;
8137
8138 /* Continue on as if we had a got reloc, to output
8139 dynamic reloc. */
8140 r_type = R_PPC_GOT16_LO;
8141 }
8142 else
8143 _bfd_error_handler
8144 /* xgettext:c-format */
8145 (_("%pB(%pA+%#" PRIx64 "): error: "
8146 "%s with unexpected instruction %#x"),
8147 input_bfd, input_section, (uint64_t) rel->r_offset,
8148 "R_PPC_ADDR16_HA", insn);
8149 }
8150 else if (r_type == R_PPC_ADDR16_LO)
8151 {
8152 insn = bfd_get_32 (input_bfd,
8153 contents + rel->r_offset - d_offset);
8154 if ((insn & (0x3f << 26)) == 14u << 26 /* addi */
8155 || (insn & (0x3f << 26)) == 32u << 26 /* lwz */
8156 || (insn & (0x3f << 26)) == 34u << 26 /* lbz */
8157 || (insn & (0x3f << 26)) == 36u << 26 /* stw */
8158 || (insn & (0x3f << 26)) == 38u << 26 /* stb */
8159 || (insn & (0x3f << 26)) == 40u << 26 /* lhz */
8160 || (insn & (0x3f << 26)) == 42u << 26 /* lha */
8161 || (insn & (0x3f << 26)) == 44u << 26 /* sth */
8162 || (insn & (0x3f << 26)) == 46u << 26 /* lmw */
8163 || (insn & (0x3f << 26)) == 47u << 26 /* stmw */
8164 || (insn & (0x3f << 26)) == 48u << 26 /* lfs */
8165 || (insn & (0x3f << 26)) == 50u << 26 /* lfd */
8166 || (insn & (0x3f << 26)) == 52u << 26 /* stfs */
8167 || (insn & (0x3f << 26)) == 54u << 26 /* stfd */
8168 || ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
8169 && (insn & 3) != 1)
8170 || ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */
8171 && ((insn & 3) == 0 || (insn & 3) == 3)))
8172 {
8173 /* Arrange to apply the reloc addend, if any. */
8174 relocation = 0;
8175 unresolved_reloc = FALSE;
8176 rel->r_info = ELF32_R_INFO (0, r_type);
8177 }
8178 else
8179 _bfd_error_handler
8180 /* xgettext:c-format */
8181 (_("%pB(%pA+%#" PRIx64 "): error: "
8182 "%s with unexpected instruction %#x"),
8183 input_bfd, input_section, (uint64_t) rel->r_offset,
8184 "R_PPC_ADDR16_LO", insn);
8185 }
8186 }
8187
8188 ifunc = NULL;
8189 if (!htab->is_vxworks)
8190 {
8191 struct plt_entry *ent;
8192
8193 if (h != NULL)
8194 {
8195 if (h->type == STT_GNU_IFUNC)
8196 ifunc = &h->plt.plist;
8197 }
8198 else if (local_got_offsets != NULL
8199 && ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
8200 {
8201 struct plt_entry **local_plt;
8202
8203 local_plt = (struct plt_entry **) (local_got_offsets
8204 + symtab_hdr->sh_info);
8205 ifunc = local_plt + r_symndx;
8206 }
8207
8208 ent = NULL;
8209 if (ifunc != NULL
8210 && (!bfd_link_pic (info)
8211 || is_branch_reloc (r_type)))
8212 {
8213 addend = 0;
8214 if (r_type == R_PPC_PLTREL24 && bfd_link_pic (info))
8215 addend = rel->r_addend;
8216 ent = find_plt_ent (ifunc, got2, addend);
8217 }
8218 if (ent != NULL)
8219 {
8220 if (bfd_link_pic (info)
8221 && ent->sec != got2
8222 && htab->plt_type != PLT_NEW
8223 && (!htab->elf.dynamic_sections_created
8224 || h == NULL
8225 || h->dynindx == -1))
8226 {
8227 /* Uh oh, we are going to create a pic glink stub
8228 for an ifunc (here for h == NULL and later in
8229 finish_dynamic_symbol for h != NULL), and
8230 apparently are using code compiled with
8231 -mbss-plt. The difficulty is that -mbss-plt code
8232 gives no indication via a magic PLTREL24 addend
8233 whether r30 is equal to _GLOBAL_OFFSET_TABLE_ or
8234 is pointing into a .got2 section (and how far
8235 into .got2). */
8236 info->callbacks->einfo
8237 /* xgettext:c-format */
8238 (_("%X%H: unsupported bss-plt -fPIC ifunc %s\n"),
8239 input_bfd, input_section, rel->r_offset, sym_name);
8240 }
8241 if (h == NULL && (ent->plt.offset & 1) == 0)
8242 {
8243 Elf_Internal_Rela rela;
8244 bfd_byte *loc;
8245
8246 rela.r_offset = (htab->elf.iplt->output_section->vma
8247 + htab->elf.iplt->output_offset
8248 + ent->plt.offset);
8249 rela.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
8250 rela.r_addend = relocation;
8251 loc = htab->elf.irelplt->contents;
8252 loc += (htab->elf.irelplt->reloc_count++
8253 * sizeof (Elf32_External_Rela));
8254 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
8255 htab->local_ifunc_resolver = 1;
8256
8257 ent->plt.offset |= 1;
8258 }
8259 if (h == NULL && (ent->glink_offset & 1) == 0)
8260 {
8261 unsigned char *p = ((unsigned char *) htab->glink->contents
8262 + ent->glink_offset);
8263
8264 write_glink_stub (NULL, ent, htab->elf.iplt, p, info);
8265 ent->glink_offset |= 1;
8266 }
8267
8268 unresolved_reloc = FALSE;
8269 if (htab->plt_type == PLT_NEW
8270 || !htab->elf.dynamic_sections_created
8271 || h == NULL
8272 || h->dynindx == -1)
8273 relocation = (htab->glink->output_section->vma
8274 + htab->glink->output_offset
8275 + (ent->glink_offset & ~1));
8276 else
8277 relocation = (htab->elf.splt->output_section->vma
8278 + htab->elf.splt->output_offset
8279 + ent->plt.offset);
8280 }
8281 }
8282
8283 addend = rel->r_addend;
8284 howto = NULL;
8285 if (r_type < R_PPC_max)
8286 howto = ppc_elf_howto_table[r_type];
8287
8288 switch (r_type)
8289 {
8290 default:
8291 break;
8292
8293 case R_PPC_TPREL16_HA:
8294 if (htab->do_tls_opt && relocation + addend + 0x8000 < 0x10000)
8295 {
8296 bfd_byte *p = contents + (rel->r_offset & ~3);
8297 unsigned int insn = bfd_get_32 (input_bfd, p);
8298 if ((insn & ((0x3f << 26) | 0x1f << 16))
8299 != ((15u << 26) | (2 << 16)) /* addis rt,2,imm */)
8300 /* xgettext:c-format */
8301 info->callbacks->minfo
8302 (_("%H: warning: %s unexpected insn %#x.\n"),
8303 input_bfd, input_section, rel->r_offset, howto->name, insn);
8304 else
8305 bfd_put_32 (input_bfd, NOP, p);
8306 }
8307 break;
8308
8309 case R_PPC_TPREL16_LO:
8310 if (htab->do_tls_opt && relocation + addend + 0x8000 < 0x10000)
8311 {
8312 bfd_byte *p = contents + (rel->r_offset & ~3);
8313 unsigned int insn = bfd_get_32 (input_bfd, p);
8314 insn &= ~(0x1f << 16);
8315 insn |= 2 << 16;
8316 bfd_put_32 (input_bfd, insn, p);
8317 }
8318 break;
8319 }
8320
8321 tls_type = 0;
8322 switch (r_type)
8323 {
8324 default:
8325 /* xgettext:c-format */
8326 _bfd_error_handler (_("%pB: %s unsupported"),
8327 input_bfd, howto->name);
8328
8329 bfd_set_error (bfd_error_bad_value);
8330 ret = FALSE;
8331 goto copy_reloc;
8332
8333 case R_PPC_NONE:
8334 case R_PPC_TLS:
8335 case R_PPC_TLSGD:
8336 case R_PPC_TLSLD:
8337 case R_PPC_EMB_MRKREF:
8338 case R_PPC_GNU_VTINHERIT:
8339 case R_PPC_GNU_VTENTRY:
8340 goto copy_reloc;
8341
8342 /* GOT16 relocations. Like an ADDR16 using the symbol's
8343 address in the GOT as relocation value instead of the
8344 symbol's value itself. Also, create a GOT entry for the
8345 symbol and put the symbol value there. */
8346 case R_PPC_GOT_TLSGD16:
8347 case R_PPC_GOT_TLSGD16_LO:
8348 case R_PPC_GOT_TLSGD16_HI:
8349 case R_PPC_GOT_TLSGD16_HA:
8350 tls_type = TLS_TLS | TLS_GD;
8351 goto dogot;
8352
8353 case R_PPC_GOT_TLSLD16:
8354 case R_PPC_GOT_TLSLD16_LO:
8355 case R_PPC_GOT_TLSLD16_HI:
8356 case R_PPC_GOT_TLSLD16_HA:
8357 tls_type = TLS_TLS | TLS_LD;
8358 goto dogot;
8359
8360 case R_PPC_GOT_TPREL16:
8361 case R_PPC_GOT_TPREL16_LO:
8362 case R_PPC_GOT_TPREL16_HI:
8363 case R_PPC_GOT_TPREL16_HA:
8364 tls_type = TLS_TLS | TLS_TPREL;
8365 goto dogot;
8366
8367 case R_PPC_GOT_DTPREL16:
8368 case R_PPC_GOT_DTPREL16_LO:
8369 case R_PPC_GOT_DTPREL16_HI:
8370 case R_PPC_GOT_DTPREL16_HA:
8371 tls_type = TLS_TLS | TLS_DTPREL;
8372 goto dogot;
8373
8374 case R_PPC_GOT16:
8375 case R_PPC_GOT16_LO:
8376 case R_PPC_GOT16_HI:
8377 case R_PPC_GOT16_HA:
8378 tls_mask = 0;
8379 dogot:
8380 {
8381 /* Relocation is to the entry for this symbol in the global
8382 offset table. */
8383 bfd_vma off;
8384 bfd_vma *offp;
8385 unsigned long indx;
8386
8387 if (htab->elf.sgot == NULL)
8388 abort ();
8389
8390 indx = 0;
8391 if (tls_type == (TLS_TLS | TLS_LD)
8392 && (h == NULL
8393 || !h->def_dynamic))
8394 offp = &htab->tlsld_got.offset;
8395 else if (h != NULL)
8396 {
8397 if (!htab->elf.dynamic_sections_created
8398 || h->dynindx == -1
8399 || SYMBOL_REFERENCES_LOCAL (info, h)
8400 || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h))
8401 /* This is actually a static link, or it is a
8402 -Bsymbolic link and the symbol is defined
8403 locally, or the symbol was forced to be local
8404 because of a version file. */
8405 ;
8406 else
8407 {
8408 indx = h->dynindx;
8409 unresolved_reloc = FALSE;
8410 }
8411 offp = &h->got.offset;
8412 }
8413 else
8414 {
8415 if (local_got_offsets == NULL)
8416 abort ();
8417 offp = &local_got_offsets[r_symndx];
8418 }
8419
8420 /* The offset must always be a multiple of 4. We use the
8421 least significant bit to record whether we have already
8422 processed this entry. */
8423 off = *offp;
8424 if ((off & 1) != 0)
8425 off &= ~1;
8426 else
8427 {
8428 unsigned int tls_m = (tls_mask
8429 & (TLS_LD | TLS_GD | TLS_DTPREL
8430 | TLS_TPREL | TLS_TPRELGD));
8431
8432 if (offp == &htab->tlsld_got.offset)
8433 tls_m = TLS_LD;
8434 else if (h == NULL
8435 || !h->def_dynamic)
8436 tls_m &= ~TLS_LD;
8437
8438 /* We might have multiple got entries for this sym.
8439 Initialize them all. */
8440 do
8441 {
8442 int tls_ty = 0;
8443
8444 if ((tls_m & TLS_LD) != 0)
8445 {
8446 tls_ty = TLS_TLS | TLS_LD;
8447 tls_m &= ~TLS_LD;
8448 }
8449 else if ((tls_m & TLS_GD) != 0)
8450 {
8451 tls_ty = TLS_TLS | TLS_GD;
8452 tls_m &= ~TLS_GD;
8453 }
8454 else if ((tls_m & TLS_DTPREL) != 0)
8455 {
8456 tls_ty = TLS_TLS | TLS_DTPREL;
8457 tls_m &= ~TLS_DTPREL;
8458 }
8459 else if ((tls_m & (TLS_TPREL | TLS_TPRELGD)) != 0)
8460 {
8461 tls_ty = TLS_TLS | TLS_TPREL;
8462 tls_m = 0;
8463 }
8464
8465 /* Generate relocs for the dynamic linker. */
8466 if (indx != 0
8467 || (bfd_link_pic (info)
8468 && (h == NULL
8469 || !UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)
8470 || offp == &htab->tlsld_got.offset)
8471 && !(tls_ty == (TLS_TLS | TLS_TPREL)
8472 && bfd_link_executable (info)
8473 && SYMBOL_REFERENCES_LOCAL (info, h))))
8474 {
8475 asection *rsec = htab->elf.srelgot;
8476 bfd_byte * loc;
8477
8478 if (ifunc != NULL)
8479 {
8480 rsec = htab->elf.irelplt;
8481 if (indx == 0)
8482 htab->local_ifunc_resolver = 1;
8483 else if (is_static_defined (h))
8484 htab->maybe_local_ifunc_resolver = 1;
8485 }
8486 outrel.r_offset = (htab->elf.sgot->output_section->vma
8487 + htab->elf.sgot->output_offset
8488 + off);
8489 outrel.r_addend = 0;
8490 if (tls_ty & (TLS_LD | TLS_GD))
8491 {
8492 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPMOD32);
8493 if (tls_ty == (TLS_TLS | TLS_GD))
8494 {
8495 loc = rsec->contents;
8496 loc += (rsec->reloc_count++
8497 * sizeof (Elf32_External_Rela));
8498 bfd_elf32_swap_reloca_out (output_bfd,
8499 &outrel, loc);
8500 outrel.r_offset += 4;
8501 outrel.r_info
8502 = ELF32_R_INFO (indx, R_PPC_DTPREL32);
8503 }
8504 }
8505 else if (tls_ty == (TLS_TLS | TLS_DTPREL))
8506 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPREL32);
8507 else if (tls_ty == (TLS_TLS | TLS_TPREL))
8508 outrel.r_info = ELF32_R_INFO (indx, R_PPC_TPREL32);
8509 else if (indx != 0)
8510 outrel.r_info = ELF32_R_INFO (indx, R_PPC_GLOB_DAT);
8511 else if (ifunc != NULL)
8512 outrel.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
8513 else
8514 outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
8515 if (indx == 0 && tls_ty != (TLS_TLS | TLS_LD))
8516 {
8517 outrel.r_addend += relocation;
8518 if (tls_ty & (TLS_GD | TLS_DTPREL | TLS_TPREL))
8519 {
8520 if (htab->elf.tls_sec == NULL)
8521 outrel.r_addend = 0;
8522 else
8523 outrel.r_addend -= htab->elf.tls_sec->vma;
8524 }
8525 }
8526 loc = rsec->contents;
8527 loc += (rsec->reloc_count++
8528 * sizeof (Elf32_External_Rela));
8529 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
8530 }
8531
8532 /* Init the .got section contents if we're not
8533 emitting a reloc. */
8534 else
8535 {
8536 bfd_vma value = relocation;
8537
8538 if (tls_ty != 0)
8539 {
8540 if (htab->elf.tls_sec == NULL)
8541 value = 0;
8542 else
8543 {
8544 if (tls_ty & TLS_LD)
8545 value = 0;
8546 else
8547 value -= htab->elf.tls_sec->vma + DTP_OFFSET;
8548 if (tls_ty & TLS_TPREL)
8549 value += DTP_OFFSET - TP_OFFSET;
8550 }
8551
8552 if (tls_ty & (TLS_LD | TLS_GD))
8553 {
8554 bfd_put_32 (input_bfd, value,
8555 htab->elf.sgot->contents + off + 4);
8556 value = 1;
8557 }
8558 }
8559 bfd_put_32 (input_bfd, value,
8560 htab->elf.sgot->contents + off);
8561 }
8562
8563 off += 4;
8564 if (tls_ty & (TLS_LD | TLS_GD))
8565 off += 4;
8566 }
8567 while (tls_m != 0);
8568
8569 off = *offp;
8570 *offp = off | 1;
8571 }
8572
8573 if (off >= (bfd_vma) -2)
8574 abort ();
8575
8576 if ((tls_type & TLS_TLS) != 0)
8577 {
8578 if (tls_type != (TLS_TLS | TLS_LD))
8579 {
8580 if ((tls_mask & TLS_LD) != 0
8581 && !(h == NULL
8582 || !h->def_dynamic))
8583 off += 8;
8584 if (tls_type != (TLS_TLS | TLS_GD))
8585 {
8586 if ((tls_mask & TLS_GD) != 0)
8587 off += 8;
8588 if (tls_type != (TLS_TLS | TLS_DTPREL))
8589 {
8590 if ((tls_mask & TLS_DTPREL) != 0)
8591 off += 4;
8592 }
8593 }
8594 }
8595 }
8596
8597 /* If here for a picfixup, we're done. */
8598 if (r_type != ELF32_R_TYPE (rel->r_info))
8599 goto copy_reloc;
8600
8601 relocation = (htab->elf.sgot->output_section->vma
8602 + htab->elf.sgot->output_offset
8603 + off
8604 - SYM_VAL (htab->elf.hgot));
8605
8606 /* Addends on got relocations don't make much sense.
8607 x+off@got is actually x@got+off, and since the got is
8608 generated by a hash table traversal, the value in the
8609 got at entry m+n bears little relation to the entry m. */
8610 if (addend != 0)
8611 info->callbacks->einfo
8612 /* xgettext:c-format */
8613 (_("%H: non-zero addend on %s reloc against `%s'\n"),
8614 input_bfd, input_section, rel->r_offset,
8615 howto->name,
8616 sym_name);
8617 }
8618 break;
8619
8620 /* Relocations that need no special processing. */
8621 case R_PPC_LOCAL24PC:
8622 /* It makes no sense to point a local relocation
8623 at a symbol not in this object. */
8624 if (unresolved_reloc)
8625 {
8626 (*info->callbacks->undefined_symbol) (info,
8627 h->root.root.string,
8628 input_bfd,
8629 input_section,
8630 rel->r_offset,
8631 TRUE);
8632 goto copy_reloc;
8633 }
8634 if (h != NULL && h->type == STT_GNU_IFUNC && bfd_link_pic (info))
8635 {
8636 /* @local on an ifunc does not really make sense since
8637 the ifunc resolver can take you anywhere. More
8638 seriously, calls to ifuncs must go through a plt call
8639 stub, and for pic the plt call stubs uses r30 to
8640 access the PLT. The problem is that a call that is
8641 local won't have the +32k reloc addend trick marking
8642 -fPIC code, so the linker won't know whether r30 is
8643 _GLOBAL_OFFSET_TABLE_ or pointing into a .got2 section. */
8644 /* xgettext:c-format */
8645 info->callbacks->einfo (_("%X%H: @local call to ifunc %s\n"),
8646 input_bfd, input_section, rel->r_offset,
8647 h->root.root.string);
8648 }
8649 break;
8650
8651 case R_PPC_DTPREL16:
8652 case R_PPC_DTPREL16_LO:
8653 case R_PPC_DTPREL16_HI:
8654 case R_PPC_DTPREL16_HA:
8655 if (htab->elf.tls_sec != NULL)
8656 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
8657 break;
8658
8659 /* Relocations that may need to be propagated if this is a shared
8660 object. */
8661 case R_PPC_TPREL16:
8662 case R_PPC_TPREL16_LO:
8663 case R_PPC_TPREL16_HI:
8664 case R_PPC_TPREL16_HA:
8665 if (h != NULL
8666 && h->root.type == bfd_link_hash_undefweak
8667 && h->dynindx == -1)
8668 {
8669 /* Make this relocation against an undefined weak symbol
8670 resolve to zero. This is really just a tweak, since
8671 code using weak externs ought to check that they are
8672 defined before using them. */
8673 bfd_byte *p = contents + rel->r_offset - d_offset;
8674 unsigned int insn = bfd_get_32 (input_bfd, p);
8675 insn = _bfd_elf_ppc_at_tprel_transform (insn, 2);
8676 if (insn != 0)
8677 bfd_put_32 (input_bfd, insn, p);
8678 break;
8679 }
8680 if (htab->elf.tls_sec != NULL)
8681 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
8682 /* The TPREL16 relocs shouldn't really be used in shared
8683 libs or with non-local symbols as that will result in
8684 DT_TEXTREL being set, but support them anyway. */
8685 goto dodyn;
8686
8687 case R_PPC_TPREL32:
8688 if (htab->elf.tls_sec != NULL)
8689 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
8690 goto dodyn;
8691
8692 case R_PPC_DTPREL32:
8693 if (htab->elf.tls_sec != NULL)
8694 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
8695 goto dodyn;
8696
8697 case R_PPC_DTPMOD32:
8698 relocation = 1;
8699 addend = 0;
8700 goto dodyn;
8701
8702 case R_PPC_REL16:
8703 case R_PPC_REL16_LO:
8704 case R_PPC_REL16_HI:
8705 case R_PPC_REL16_HA:
8706 case R_PPC_REL16DX_HA:
8707 break;
8708
8709 case R_PPC_REL32:
8710 if (h == NULL || h == htab->elf.hgot)
8711 break;
8712 /* fall through */
8713
8714 case R_PPC_ADDR32:
8715 case R_PPC_ADDR16:
8716 case R_PPC_ADDR16_LO:
8717 case R_PPC_ADDR16_HI:
8718 case R_PPC_ADDR16_HA:
8719 case R_PPC_UADDR32:
8720 case R_PPC_UADDR16:
8721 goto dodyn;
8722
8723 case R_PPC_VLE_REL8:
8724 case R_PPC_VLE_REL15:
8725 case R_PPC_VLE_REL24:
8726 case R_PPC_REL24:
8727 case R_PPC_REL14:
8728 case R_PPC_REL14_BRTAKEN:
8729 case R_PPC_REL14_BRNTAKEN:
8730 /* If these relocations are not to a named symbol, they can be
8731 handled right here, no need to bother the dynamic linker. */
8732 if (SYMBOL_CALLS_LOCAL (info, h)
8733 || h == htab->elf.hgot)
8734 break;
8735 /* fall through */
8736
8737 case R_PPC_ADDR24:
8738 case R_PPC_ADDR14:
8739 case R_PPC_ADDR14_BRTAKEN:
8740 case R_PPC_ADDR14_BRNTAKEN:
8741 if (h != NULL && !bfd_link_pic (info))
8742 break;
8743 /* fall through */
8744
8745 dodyn:
8746 if ((input_section->flags & SEC_ALLOC) == 0
8747 || is_vxworks_tls)
8748 break;
8749
8750 if (bfd_link_pic (info)
8751 ? ((h == NULL
8752 || ppc_elf_hash_entry (h)->dyn_relocs != NULL)
8753 && ((h != NULL && pc_dynrelocs (h))
8754 || must_be_dyn_reloc (info, r_type)))
8755 : (h != NULL
8756 && ppc_elf_hash_entry (h)->dyn_relocs != NULL))
8757 {
8758 int skip;
8759 bfd_byte *loc;
8760 asection *sreloc;
8761 long indx = 0;
8762
8763 #ifdef DEBUG
8764 fprintf (stderr, "ppc_elf_relocate_section needs to "
8765 "create relocation for %s\n",
8766 (h && h->root.root.string
8767 ? h->root.root.string : "<unknown>"));
8768 #endif
8769
8770 /* When generating a shared object, these relocations
8771 are copied into the output file to be resolved at run
8772 time. */
8773 skip = 0;
8774 outrel.r_offset = _bfd_elf_section_offset (output_bfd, info,
8775 input_section,
8776 rel->r_offset);
8777 if (outrel.r_offset == (bfd_vma) -1
8778 || outrel.r_offset == (bfd_vma) -2)
8779 skip = (int) outrel.r_offset;
8780 outrel.r_offset += (input_section->output_section->vma
8781 + input_section->output_offset);
8782
8783 if (skip)
8784 memset (&outrel, 0, sizeof outrel);
8785 else if (!SYMBOL_REFERENCES_LOCAL (info, h))
8786 {
8787 indx = h->dynindx;
8788 BFD_ASSERT (indx != -1);
8789 unresolved_reloc = FALSE;
8790 outrel.r_info = ELF32_R_INFO (indx, r_type);
8791 outrel.r_addend = rel->r_addend;
8792 }
8793 else
8794 {
8795 outrel.r_addend = relocation + rel->r_addend;
8796
8797 if (r_type != R_PPC_ADDR32)
8798 {
8799 if (ifunc != NULL)
8800 {
8801 /* If we get here when building a static
8802 executable, then the libc startup function
8803 responsible for applying indirect function
8804 relocations is going to complain about
8805 the reloc type.
8806 If we get here when building a dynamic
8807 executable, it will be because we have
8808 a text relocation. The dynamic loader
8809 will set the text segment writable and
8810 non-executable to apply text relocations.
8811 So we'll segfault when trying to run the
8812 indirection function to resolve the reloc. */
8813 info->callbacks->einfo
8814 /* xgettext:c-format */
8815 (_("%H: relocation %s for indirect "
8816 "function %s unsupported\n"),
8817 input_bfd, input_section, rel->r_offset,
8818 howto->name,
8819 sym_name);
8820 ret = FALSE;
8821 }
8822 else if (r_symndx == STN_UNDEF || bfd_is_abs_section (sec))
8823 ;
8824 else if (sec == NULL || sec->owner == NULL)
8825 {
8826 bfd_set_error (bfd_error_bad_value);
8827 ret = FALSE;
8828 }
8829 else
8830 {
8831 asection *osec;
8832
8833 /* We are turning this relocation into one
8834 against a section symbol. It would be
8835 proper to subtract the symbol's value,
8836 osec->vma, from the emitted reloc addend,
8837 but ld.so expects buggy relocs.
8838 FIXME: Why not always use a zero index? */
8839 osec = sec->output_section;
8840 indx = elf_section_data (osec)->dynindx;
8841 if (indx == 0)
8842 {
8843 osec = htab->elf.text_index_section;
8844 indx = elf_section_data (osec)->dynindx;
8845 }
8846 BFD_ASSERT (indx != 0);
8847 #ifdef DEBUG
8848 if (indx == 0)
8849 printf ("indx=%ld section=%s flags=%08x name=%s\n",
8850 indx, osec->name, osec->flags,
8851 h->root.root.string);
8852 #endif
8853 }
8854
8855 outrel.r_info = ELF32_R_INFO (indx, r_type);
8856 }
8857 else if (ifunc != NULL)
8858 outrel.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
8859 else
8860 outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
8861 }
8862
8863 sreloc = elf_section_data (input_section)->sreloc;
8864 if (ifunc)
8865 {
8866 sreloc = htab->elf.irelplt;
8867 if (indx == 0)
8868 htab->local_ifunc_resolver = 1;
8869 else if (is_static_defined (h))
8870 htab->maybe_local_ifunc_resolver = 1;
8871 }
8872 if (sreloc == NULL)
8873 return FALSE;
8874
8875 loc = sreloc->contents;
8876 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
8877 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
8878
8879 if (skip == -1)
8880 goto copy_reloc;
8881
8882 /* This reloc will be computed at runtime. Clear the memory
8883 so that it contains a predictable value for prelink. */
8884 if (!skip)
8885 {
8886 relocation = howto->pc_relative ? outrel.r_offset : 0;
8887 addend = 0;
8888 break;
8889 }
8890 }
8891 break;
8892
8893 case R_PPC_RELAX_PLT:
8894 case R_PPC_RELAX_PLTREL24:
8895 if (h != NULL)
8896 {
8897 struct plt_entry *ent;
8898 bfd_vma got2_addend = 0;
8899
8900 if (r_type == R_PPC_RELAX_PLTREL24)
8901 {
8902 if (bfd_link_pic (info))
8903 got2_addend = addend;
8904 addend = 0;
8905 }
8906 ent = find_plt_ent (&h->plt.plist, got2, got2_addend);
8907 if (htab->plt_type == PLT_NEW)
8908 relocation = (htab->glink->output_section->vma
8909 + htab->glink->output_offset
8910 + ent->glink_offset);
8911 else
8912 relocation = (htab->elf.splt->output_section->vma
8913 + htab->elf.splt->output_offset
8914 + ent->plt.offset);
8915 }
8916 /* Fall through. */
8917
8918 case R_PPC_RELAX:
8919 {
8920 const int *stub;
8921 size_t size;
8922 size_t insn_offset = rel->r_offset;
8923 unsigned int insn;
8924
8925 if (bfd_link_pic (info))
8926 {
8927 relocation -= (input_section->output_section->vma
8928 + input_section->output_offset
8929 + rel->r_offset - 4);
8930 stub = shared_stub_entry;
8931 bfd_put_32 (input_bfd, stub[0], contents + insn_offset - 12);
8932 bfd_put_32 (input_bfd, stub[1], contents + insn_offset - 8);
8933 bfd_put_32 (input_bfd, stub[2], contents + insn_offset - 4);
8934 stub += 3;
8935 size = ARRAY_SIZE (shared_stub_entry) - 3;
8936 }
8937 else
8938 {
8939 stub = stub_entry;
8940 size = ARRAY_SIZE (stub_entry);
8941 }
8942
8943 relocation += addend;
8944 if (bfd_link_relocatable (info))
8945 relocation = 0;
8946
8947 /* First insn is HA, second is LO. */
8948 insn = *stub++;
8949 insn |= ((relocation + 0x8000) >> 16) & 0xffff;
8950 bfd_put_32 (input_bfd, insn, contents + insn_offset);
8951 insn_offset += 4;
8952
8953 insn = *stub++;
8954 insn |= relocation & 0xffff;
8955 bfd_put_32 (input_bfd, insn, contents + insn_offset);
8956 insn_offset += 4;
8957 size -= 2;
8958
8959 while (size != 0)
8960 {
8961 insn = *stub++;
8962 --size;
8963 bfd_put_32 (input_bfd, insn, contents + insn_offset);
8964 insn_offset += 4;
8965 }
8966
8967 /* Rewrite the reloc and convert one of the trailing nop
8968 relocs to describe this relocation. */
8969 BFD_ASSERT (ELF32_R_TYPE (relend[-1].r_info) == R_PPC_NONE);
8970 /* The relocs are at the bottom 2 bytes */
8971 wrel->r_offset = rel->r_offset + d_offset;
8972 wrel->r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_HA);
8973 wrel->r_addend = rel->r_addend;
8974 memmove (wrel + 1, wrel, (relend - wrel - 1) * sizeof (*wrel));
8975 wrel++, rel++;
8976 wrel->r_offset += 4;
8977 wrel->r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_LO);
8978 }
8979 continue;
8980
8981 /* Indirect .sdata relocation. */
8982 case R_PPC_EMB_SDAI16:
8983 BFD_ASSERT (htab->sdata[0].section != NULL);
8984 if (!is_static_defined (htab->sdata[0].sym))
8985 {
8986 unresolved_reloc = TRUE;
8987 break;
8988 }
8989 relocation
8990 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[0],
8991 h, relocation, rel);
8992 addend = 0;
8993 break;
8994
8995 /* Indirect .sdata2 relocation. */
8996 case R_PPC_EMB_SDA2I16:
8997 BFD_ASSERT (htab->sdata[1].section != NULL);
8998 if (!is_static_defined (htab->sdata[1].sym))
8999 {
9000 unresolved_reloc = TRUE;
9001 break;
9002 }
9003 relocation
9004 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[1],
9005 h, relocation, rel);
9006 addend = 0;
9007 break;
9008
9009 /* Handle the TOC16 reloc. We want to use the offset within the .got
9010 section, not the actual VMA. This is appropriate when generating
9011 an embedded ELF object, for which the .got section acts like the
9012 AIX .toc section. */
9013 case R_PPC_TOC16: /* phony GOT16 relocations */
9014 if (sec == NULL || sec->output_section == NULL)
9015 {
9016 unresolved_reloc = TRUE;
9017 break;
9018 }
9019 BFD_ASSERT (strcmp (bfd_get_section_name (sec->owner, sec),
9020 ".got") == 0
9021 || strcmp (bfd_get_section_name (sec->owner, sec),
9022 ".cgot") == 0);
9023
9024 addend -= sec->output_section->vma + sec->output_offset + 0x8000;
9025 break;
9026
9027 case R_PPC_PLTREL24:
9028 if (h != NULL && ifunc == NULL)
9029 {
9030 struct plt_entry *ent;
9031
9032 ent = find_plt_ent (&h->plt.plist, got2,
9033 bfd_link_pic (info) ? addend : 0);
9034 if (ent == NULL
9035 || htab->elf.splt == NULL)
9036 {
9037 /* We didn't make a PLT entry for this symbol. This
9038 happens when statically linking PIC code, or when
9039 using -Bsymbolic. */
9040 }
9041 else
9042 {
9043 /* Relocation is to the entry for this symbol in the
9044 procedure linkage table. */
9045 unresolved_reloc = FALSE;
9046 if (htab->plt_type == PLT_NEW)
9047 relocation = (htab->glink->output_section->vma
9048 + htab->glink->output_offset
9049 + ent->glink_offset);
9050 else
9051 relocation = (htab->elf.splt->output_section->vma
9052 + htab->elf.splt->output_offset
9053 + ent->plt.offset);
9054 }
9055 }
9056
9057 /* R_PPC_PLTREL24 is rather special. If non-zero, the
9058 addend specifies the GOT pointer offset within .got2.
9059 Don't apply it to the relocation field. */
9060 addend = 0;
9061 break;
9062
9063 /* Relocate against _SDA_BASE_. */
9064 case R_PPC_SDAREL16:
9065 {
9066 const char *name;
9067 struct elf_link_hash_entry *sda = htab->sdata[0].sym;
9068
9069 if (sec == NULL
9070 || sec->output_section == NULL
9071 || !is_static_defined (sda))
9072 {
9073 unresolved_reloc = TRUE;
9074 break;
9075 }
9076 addend -= SYM_VAL (sda);
9077
9078 name = bfd_get_section_name (output_bfd, sec->output_section);
9079 if (!(strcmp (name, ".sdata") == 0
9080 || strcmp (name, ".sbss") == 0))
9081 {
9082 _bfd_error_handler
9083 /* xgettext:c-format */
9084 (_("%pB: the target (%s) of a %s relocation is "
9085 "in the wrong output section (%s)"),
9086 input_bfd,
9087 sym_name,
9088 howto->name,
9089 name);
9090 }
9091 }
9092 break;
9093
9094 /* Relocate against _SDA2_BASE_. */
9095 case R_PPC_EMB_SDA2REL:
9096 {
9097 const char *name;
9098 struct elf_link_hash_entry *sda = htab->sdata[1].sym;
9099
9100 if (sec == NULL
9101 || sec->output_section == NULL
9102 || !is_static_defined (sda))
9103 {
9104 unresolved_reloc = TRUE;
9105 break;
9106 }
9107 addend -= SYM_VAL (sda);
9108
9109 name = bfd_get_section_name (output_bfd, sec->output_section);
9110 if (!(strcmp (name, ".sdata2") == 0
9111 || strcmp (name, ".sbss2") == 0))
9112 {
9113 _bfd_error_handler
9114 /* xgettext:c-format */
9115 (_("%pB: the target (%s) of a %s relocation is "
9116 "in the wrong output section (%s)"),
9117 input_bfd,
9118 sym_name,
9119 howto->name,
9120 name);
9121 }
9122 }
9123 break;
9124
9125 case R_PPC_VLE_LO16A:
9126 relocation = relocation + addend;
9127 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9128 contents + rel->r_offset, relocation,
9129 split16a_type, htab->params->vle_reloc_fixup);
9130 goto copy_reloc;
9131
9132 case R_PPC_VLE_LO16D:
9133 relocation = relocation + addend;
9134 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9135 contents + rel->r_offset, relocation,
9136 split16d_type, htab->params->vle_reloc_fixup);
9137 goto copy_reloc;
9138
9139 case R_PPC_VLE_HI16A:
9140 relocation = (relocation + addend) >> 16;
9141 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9142 contents + rel->r_offset, relocation,
9143 split16a_type, htab->params->vle_reloc_fixup);
9144 goto copy_reloc;
9145
9146 case R_PPC_VLE_HI16D:
9147 relocation = (relocation + addend) >> 16;
9148 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9149 contents + rel->r_offset, relocation,
9150 split16d_type, htab->params->vle_reloc_fixup);
9151 goto copy_reloc;
9152
9153 case R_PPC_VLE_HA16A:
9154 relocation = (relocation + addend + 0x8000) >> 16;
9155 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9156 contents + rel->r_offset, relocation,
9157 split16a_type, htab->params->vle_reloc_fixup);
9158 goto copy_reloc;
9159
9160 case R_PPC_VLE_HA16D:
9161 relocation = (relocation + addend + 0x8000) >> 16;
9162 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9163 contents + rel->r_offset, relocation,
9164 split16d_type, htab->params->vle_reloc_fixup);
9165 goto copy_reloc;
9166
9167 /* Relocate against either _SDA_BASE_, _SDA2_BASE_, or 0. */
9168 case R_PPC_EMB_SDA21:
9169 case R_PPC_VLE_SDA21:
9170 case R_PPC_EMB_RELSDA:
9171 case R_PPC_VLE_SDA21_LO:
9172 {
9173 const char *name;
9174 int reg;
9175 unsigned int insn;
9176 struct elf_link_hash_entry *sda = NULL;
9177
9178 if (sec == NULL || sec->output_section == NULL)
9179 {
9180 unresolved_reloc = TRUE;
9181 break;
9182 }
9183
9184 name = bfd_get_section_name (output_bfd, sec->output_section);
9185 if (strcmp (name, ".sdata") == 0
9186 || strcmp (name, ".sbss") == 0)
9187 {
9188 reg = 13;
9189 sda = htab->sdata[0].sym;
9190 }
9191 else if (strcmp (name, ".sdata2") == 0
9192 || strcmp (name, ".sbss2") == 0)
9193 {
9194 reg = 2;
9195 sda = htab->sdata[1].sym;
9196 }
9197 else if (strcmp (name, ".PPC.EMB.sdata0") == 0
9198 || strcmp (name, ".PPC.EMB.sbss0") == 0)
9199 {
9200 reg = 0;
9201 }
9202 else
9203 {
9204 _bfd_error_handler
9205 /* xgettext:c-format */
9206 (_("%pB: the target (%s) of a %s relocation is "
9207 "in the wrong output section (%s)"),
9208 input_bfd,
9209 sym_name,
9210 howto->name,
9211 name);
9212
9213 bfd_set_error (bfd_error_bad_value);
9214 ret = FALSE;
9215 goto copy_reloc;
9216 }
9217
9218 if (sda != NULL)
9219 {
9220 if (!is_static_defined (sda))
9221 {
9222 unresolved_reloc = TRUE;
9223 break;
9224 }
9225 addend -= SYM_VAL (sda);
9226 }
9227
9228 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
9229 if (reg == 0
9230 && (r_type == R_PPC_VLE_SDA21
9231 || r_type == R_PPC_VLE_SDA21_LO))
9232 {
9233 relocation = relocation + addend;
9234 addend = 0;
9235
9236 /* Force e_li insn, keeping RT from original insn. */
9237 insn &= 0x1f << 21;
9238 insn |= 28u << 26;
9239
9240 /* We have an li20 field, bits 17..20, 11..15, 21..31. */
9241 /* Top 4 bits of value to 17..20. */
9242 insn |= (relocation & 0xf0000) >> 5;
9243 /* Next 5 bits of the value to 11..15. */
9244 insn |= (relocation & 0xf800) << 5;
9245 /* And the final 11 bits of the value to bits 21 to 31. */
9246 insn |= relocation & 0x7ff;
9247
9248 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
9249
9250 if (r_type == R_PPC_VLE_SDA21
9251 && ((relocation + 0x80000) & 0xffffffff) > 0x100000)
9252 goto overflow;
9253 goto copy_reloc;
9254 }
9255 else if (r_type == R_PPC_EMB_SDA21
9256 || r_type == R_PPC_VLE_SDA21
9257 || r_type == R_PPC_VLE_SDA21_LO)
9258 {
9259 /* Fill in register field. */
9260 insn = (insn & ~RA_REGISTER_MASK) | (reg << RA_REGISTER_SHIFT);
9261 }
9262 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
9263 }
9264 break;
9265
9266 case R_PPC_VLE_SDAREL_LO16A:
9267 case R_PPC_VLE_SDAREL_LO16D:
9268 case R_PPC_VLE_SDAREL_HI16A:
9269 case R_PPC_VLE_SDAREL_HI16D:
9270 case R_PPC_VLE_SDAREL_HA16A:
9271 case R_PPC_VLE_SDAREL_HA16D:
9272 {
9273 bfd_vma value;
9274 const char *name;
9275 struct elf_link_hash_entry *sda = NULL;
9276
9277 if (sec == NULL || sec->output_section == NULL)
9278 {
9279 unresolved_reloc = TRUE;
9280 break;
9281 }
9282
9283 name = bfd_get_section_name (output_bfd, sec->output_section);
9284 if (strcmp (name, ".sdata") == 0
9285 || strcmp (name, ".sbss") == 0)
9286 sda = htab->sdata[0].sym;
9287 else if (strcmp (name, ".sdata2") == 0
9288 || strcmp (name, ".sbss2") == 0)
9289 sda = htab->sdata[1].sym;
9290 else
9291 {
9292 _bfd_error_handler
9293 /* xgettext:c-format */
9294 (_("%pB: the target (%s) of a %s relocation is "
9295 "in the wrong output section (%s)"),
9296 input_bfd,
9297 sym_name,
9298 howto->name,
9299 name);
9300
9301 bfd_set_error (bfd_error_bad_value);
9302 ret = FALSE;
9303 goto copy_reloc;
9304 }
9305
9306 if (sda == NULL || !is_static_defined (sda))
9307 {
9308 unresolved_reloc = TRUE;
9309 break;
9310 }
9311 value = relocation + addend - SYM_VAL (sda);
9312
9313 if (r_type == R_PPC_VLE_SDAREL_LO16A)
9314 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9315 contents + rel->r_offset, value,
9316 split16a_type,
9317 htab->params->vle_reloc_fixup);
9318 else if (r_type == R_PPC_VLE_SDAREL_LO16D)
9319 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9320 contents + rel->r_offset, value,
9321 split16d_type,
9322 htab->params->vle_reloc_fixup);
9323 else if (r_type == R_PPC_VLE_SDAREL_HI16A)
9324 {
9325 value = value >> 16;
9326 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9327 contents + rel->r_offset, value,
9328 split16a_type,
9329 htab->params->vle_reloc_fixup);
9330 }
9331 else if (r_type == R_PPC_VLE_SDAREL_HI16D)
9332 {
9333 value = value >> 16;
9334 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9335 contents + rel->r_offset, value,
9336 split16d_type,
9337 htab->params->vle_reloc_fixup);
9338 }
9339 else if (r_type == R_PPC_VLE_SDAREL_HA16A)
9340 {
9341 value = (value + 0x8000) >> 16;
9342 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9343 contents + rel->r_offset, value,
9344 split16a_type,
9345 htab->params->vle_reloc_fixup);
9346 }
9347 else if (r_type == R_PPC_VLE_SDAREL_HA16D)
9348 {
9349 value = (value + 0x8000) >> 16;
9350 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9351 contents + rel->r_offset, value,
9352 split16d_type,
9353 htab->params->vle_reloc_fixup);
9354 }
9355 }
9356 goto copy_reloc;
9357
9358 case R_PPC_VLE_ADDR20:
9359 ppc_elf_vle_split20 (output_bfd, contents + rel->r_offset, relocation);
9360 continue;
9361
9362 /* Relocate against the beginning of the section. */
9363 case R_PPC_SECTOFF:
9364 case R_PPC_SECTOFF_LO:
9365 case R_PPC_SECTOFF_HI:
9366 case R_PPC_SECTOFF_HA:
9367 if (sec == NULL || sec->output_section == NULL)
9368 {
9369 unresolved_reloc = TRUE;
9370 break;
9371 }
9372 addend -= sec->output_section->vma;
9373 break;
9374
9375 /* Negative relocations. */
9376 case R_PPC_EMB_NADDR32:
9377 case R_PPC_EMB_NADDR16:
9378 case R_PPC_EMB_NADDR16_LO:
9379 case R_PPC_EMB_NADDR16_HI:
9380 case R_PPC_EMB_NADDR16_HA:
9381 addend -= 2 * relocation;
9382 break;
9383
9384 case R_PPC_COPY:
9385 case R_PPC_GLOB_DAT:
9386 case R_PPC_JMP_SLOT:
9387 case R_PPC_RELATIVE:
9388 case R_PPC_IRELATIVE:
9389 case R_PPC_PLT32:
9390 case R_PPC_PLTREL32:
9391 case R_PPC_PLT16_LO:
9392 case R_PPC_PLT16_HI:
9393 case R_PPC_PLT16_HA:
9394 case R_PPC_ADDR30:
9395 case R_PPC_EMB_RELSEC16:
9396 case R_PPC_EMB_RELST_LO:
9397 case R_PPC_EMB_RELST_HI:
9398 case R_PPC_EMB_RELST_HA:
9399 case R_PPC_EMB_BIT_FLD:
9400 /* xgettext:c-format */
9401 _bfd_error_handler (_("%pB: %s unsupported"),
9402 input_bfd, howto->name);
9403
9404 bfd_set_error (bfd_error_invalid_operation);
9405 ret = FALSE;
9406 goto copy_reloc;
9407 }
9408
9409 /* Do any further special processing. */
9410 switch (r_type)
9411 {
9412 default:
9413 break;
9414
9415 case R_PPC_ADDR16_HA:
9416 case R_PPC_REL16_HA:
9417 case R_PPC_REL16DX_HA:
9418 case R_PPC_SECTOFF_HA:
9419 case R_PPC_TPREL16_HA:
9420 case R_PPC_DTPREL16_HA:
9421 case R_PPC_EMB_NADDR16_HA:
9422 case R_PPC_EMB_RELST_HA:
9423 /* It's just possible that this symbol is a weak symbol
9424 that's not actually defined anywhere. In that case,
9425 'sec' would be NULL, and we should leave the symbol
9426 alone (it will be set to zero elsewhere in the link). */
9427 if (sec == NULL)
9428 break;
9429 /* Fall through. */
9430
9431 case R_PPC_PLT16_HA:
9432 case R_PPC_GOT16_HA:
9433 case R_PPC_GOT_TLSGD16_HA:
9434 case R_PPC_GOT_TLSLD16_HA:
9435 case R_PPC_GOT_TPREL16_HA:
9436 case R_PPC_GOT_DTPREL16_HA:
9437 /* Add 0x10000 if sign bit in 0:15 is set.
9438 Bits 0:15 are not used. */
9439 addend += 0x8000;
9440 break;
9441
9442 case R_PPC_ADDR16:
9443 case R_PPC_ADDR16_LO:
9444 case R_PPC_GOT16:
9445 case R_PPC_GOT16_LO:
9446 case R_PPC_SDAREL16:
9447 case R_PPC_SECTOFF:
9448 case R_PPC_SECTOFF_LO:
9449 case R_PPC_DTPREL16:
9450 case R_PPC_DTPREL16_LO:
9451 case R_PPC_TPREL16:
9452 case R_PPC_TPREL16_LO:
9453 case R_PPC_GOT_TLSGD16:
9454 case R_PPC_GOT_TLSGD16_LO:
9455 case R_PPC_GOT_TLSLD16:
9456 case R_PPC_GOT_TLSLD16_LO:
9457 case R_PPC_GOT_DTPREL16:
9458 case R_PPC_GOT_DTPREL16_LO:
9459 case R_PPC_GOT_TPREL16:
9460 case R_PPC_GOT_TPREL16_LO:
9461 {
9462 /* The 32-bit ABI lacks proper relocations to deal with
9463 certain 64-bit instructions. Prevent damage to bits
9464 that make up part of the insn opcode. */
9465 unsigned int insn, mask, lobit;
9466
9467 insn = bfd_get_32 (input_bfd,
9468 contents + rel->r_offset - d_offset);
9469 mask = 0;
9470 if (is_insn_ds_form (insn))
9471 mask = 3;
9472 else if (is_insn_dq_form (insn))
9473 mask = 15;
9474 else
9475 break;
9476 relocation += addend;
9477 addend = insn & mask;
9478 lobit = mask & relocation;
9479 if (lobit != 0)
9480 {
9481 relocation ^= lobit;
9482 info->callbacks->einfo
9483 /* xgettext:c-format */
9484 (_("%H: error: %s against `%s' not a multiple of %u\n"),
9485 input_bfd, input_section, rel->r_offset,
9486 howto->name, sym_name, mask + 1);
9487 bfd_set_error (bfd_error_bad_value);
9488 ret = FALSE;
9489 }
9490 }
9491 break;
9492 }
9493
9494 #ifdef DEBUG
9495 fprintf (stderr, "\ttype = %s (%d), name = %s, symbol index = %ld, "
9496 "offset = %ld, addend = %ld\n",
9497 howto->name,
9498 (int) r_type,
9499 sym_name,
9500 r_symndx,
9501 (long) rel->r_offset,
9502 (long) addend);
9503 #endif
9504
9505 if (unresolved_reloc
9506 && !((input_section->flags & SEC_DEBUGGING) != 0
9507 && h->def_dynamic)
9508 && _bfd_elf_section_offset (output_bfd, info, input_section,
9509 rel->r_offset) != (bfd_vma) -1)
9510 {
9511 info->callbacks->einfo
9512 /* xgettext:c-format */
9513 (_("%H: unresolvable %s relocation against symbol `%s'\n"),
9514 input_bfd, input_section, rel->r_offset,
9515 howto->name,
9516 sym_name);
9517 ret = FALSE;
9518 }
9519
9520 /* 16-bit fields in insns mostly have signed values, but a
9521 few insns have 16-bit unsigned values. Really, we should
9522 have different reloc types. */
9523 if (howto->complain_on_overflow != complain_overflow_dont
9524 && howto->dst_mask == 0xffff
9525 && (input_section->flags & SEC_CODE) != 0)
9526 {
9527 enum complain_overflow complain = complain_overflow_signed;
9528
9529 if ((elf_section_flags (input_section) & SHF_PPC_VLE) == 0)
9530 {
9531 unsigned int insn;
9532
9533 insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
9534 if ((insn & (0x3f << 26)) == 10u << 26 /* cmpli */)
9535 complain = complain_overflow_bitfield;
9536 else if ((insn & (0x3f << 26)) == 28u << 26 /* andi */
9537 || (insn & (0x3f << 26)) == 24u << 26 /* ori */
9538 || (insn & (0x3f << 26)) == 26u << 26 /* xori */)
9539 complain = complain_overflow_unsigned;
9540 }
9541 if (howto->complain_on_overflow != complain)
9542 {
9543 alt_howto = *howto;
9544 alt_howto.complain_on_overflow = complain;
9545 howto = &alt_howto;
9546 }
9547 }
9548
9549 if (r_type == R_PPC_REL16DX_HA)
9550 {
9551 /* Split field reloc isn't handled by _bfd_final_link_relocate. */
9552 if (rel->r_offset + 4 > input_section->size)
9553 r = bfd_reloc_outofrange;
9554 else
9555 {
9556 unsigned int insn;
9557
9558 relocation += addend;
9559 relocation -= (rel->r_offset
9560 + input_section->output_offset
9561 + input_section->output_section->vma);
9562 relocation >>= 16;
9563 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
9564 insn &= ~0x1fffc1;
9565 insn |= (relocation & 0xffc1) | ((relocation & 0x3e) << 15);
9566 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
9567 r = bfd_reloc_ok;
9568 }
9569 }
9570 else
9571 r = _bfd_final_link_relocate (howto, input_bfd, input_section, contents,
9572 rel->r_offset, relocation, addend);
9573
9574 if (r != bfd_reloc_ok)
9575 {
9576 if (r == bfd_reloc_overflow)
9577 {
9578 overflow:
9579 /* On code like "if (foo) foo();" don't report overflow
9580 on a branch to zero when foo is undefined. */
9581 if (!warned
9582 && !(h != NULL
9583 && (h->root.type == bfd_link_hash_undefweak
9584 || h->root.type == bfd_link_hash_undefined)
9585 && is_branch_reloc (r_type)))
9586 info->callbacks->reloc_overflow
9587 (info, (h ? &h->root : NULL), sym_name, howto->name,
9588 rel->r_addend, input_bfd, input_section, rel->r_offset);
9589 }
9590 else
9591 {
9592 info->callbacks->einfo
9593 /* xgettext:c-format */
9594 (_("%H: %s reloc against `%s': error %d\n"),
9595 input_bfd, input_section, rel->r_offset,
9596 howto->name, sym_name, (int) r);
9597 ret = FALSE;
9598 }
9599 }
9600 copy_reloc:
9601 if (wrel != rel)
9602 *wrel = *rel;
9603 }
9604
9605 if (wrel != rel)
9606 {
9607 Elf_Internal_Shdr *rel_hdr;
9608 size_t deleted = rel - wrel;
9609
9610 rel_hdr = _bfd_elf_single_rel_hdr (input_section->output_section);
9611 rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted;
9612 if (rel_hdr->sh_size == 0)
9613 {
9614 /* It is too late to remove an empty reloc section. Leave
9615 one NONE reloc.
9616 ??? What is wrong with an empty section??? */
9617 rel_hdr->sh_size = rel_hdr->sh_entsize;
9618 deleted -= 1;
9619 wrel++;
9620 }
9621 relend = wrel;
9622 rel_hdr = _bfd_elf_single_rel_hdr (input_section);
9623 rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted;
9624 input_section->reloc_count -= deleted;
9625 }
9626
9627 #ifdef DEBUG
9628 fprintf (stderr, "\n");
9629 #endif
9630
9631 if (input_section->sec_info_type == SEC_INFO_TYPE_TARGET
9632 && input_section->size != input_section->rawsize
9633 && (strcmp (input_section->output_section->name, ".init") == 0
9634 || strcmp (input_section->output_section->name, ".fini") == 0))
9635 {
9636 /* Branch around the trampolines. */
9637 unsigned int insn = B + input_section->size - input_section->rawsize;
9638 bfd_put_32 (input_bfd, insn, contents + input_section->rawsize);
9639 }
9640
9641 if (htab->params->ppc476_workaround
9642 && input_section->sec_info_type == SEC_INFO_TYPE_TARGET
9643 && (!bfd_link_relocatable (info)
9644 || (input_section->output_section->alignment_power
9645 >= htab->params->pagesize_p2)))
9646 {
9647 bfd_vma start_addr, end_addr, addr;
9648 bfd_vma pagesize = (bfd_vma) 1 << htab->params->pagesize_p2;
9649
9650 if (relax_info->workaround_size != 0)
9651 {
9652 bfd_byte *p;
9653 unsigned int n;
9654 bfd_byte fill[4];
9655
9656 bfd_put_32 (input_bfd, BA, fill);
9657 p = contents + input_section->size - relax_info->workaround_size;
9658 n = relax_info->workaround_size >> 2;
9659 while (n--)
9660 {
9661 memcpy (p, fill, 4);
9662 p += 4;
9663 }
9664 }
9665
9666 /* The idea is: Replace the last instruction on a page with a
9667 branch to a patch area. Put the insn there followed by a
9668 branch back to the next page. Complicated a little by
9669 needing to handle moved conditional branches, and by not
9670 wanting to touch data-in-text. */
9671
9672 start_addr = (input_section->output_section->vma
9673 + input_section->output_offset);
9674 end_addr = (start_addr + input_section->size
9675 - relax_info->workaround_size);
9676 for (addr = ((start_addr & -pagesize) + pagesize - 4);
9677 addr < end_addr;
9678 addr += pagesize)
9679 {
9680 bfd_vma offset = addr - start_addr;
9681 Elf_Internal_Rela *lo, *hi;
9682 bfd_boolean is_data;
9683 bfd_vma patch_off, patch_addr;
9684 unsigned int insn;
9685
9686 /* Do we have a data reloc at this offset? If so, leave
9687 the word alone. */
9688 is_data = FALSE;
9689 lo = relocs;
9690 hi = relend;
9691 rel = NULL;
9692 while (lo < hi)
9693 {
9694 rel = lo + (hi - lo) / 2;
9695 if (rel->r_offset < offset)
9696 lo = rel + 1;
9697 else if (rel->r_offset > offset + 3)
9698 hi = rel;
9699 else
9700 {
9701 switch (ELF32_R_TYPE (rel->r_info))
9702 {
9703 case R_PPC_ADDR32:
9704 case R_PPC_UADDR32:
9705 case R_PPC_REL32:
9706 case R_PPC_ADDR30:
9707 is_data = TRUE;
9708 break;
9709 default:
9710 break;
9711 }
9712 break;
9713 }
9714 }
9715 if (is_data)
9716 continue;
9717
9718 /* Some instructions can be left alone too. Unconditional
9719 branches, except for bcctr with BO=0x14 (bctr, bctrl),
9720 avoid the icache failure.
9721
9722 The problem occurs due to prefetch across a page boundary
9723 where stale instructions can be fetched from the next
9724 page, and the mechanism for flushing these bad
9725 instructions fails under certain circumstances. The
9726 unconditional branches:
9727 1) Branch: b, bl, ba, bla,
9728 2) Branch Conditional: bc, bca, bcl, bcla,
9729 3) Branch Conditional to Link Register: bclr, bclrl,
9730 where (2) and (3) have BO=0x14 making them unconditional,
9731 prevent the bad prefetch because the prefetch itself is
9732 affected by these instructions. This happens even if the
9733 instruction is not executed.
9734
9735 A bctr example:
9736 .
9737 . lis 9,new_page@ha
9738 . addi 9,9,new_page@l
9739 . mtctr 9
9740 . bctr
9741 . nop
9742 . nop
9743 . new_page:
9744 .
9745 The bctr is not predicted taken due to ctr not being
9746 ready, so prefetch continues on past the bctr into the
9747 new page which might have stale instructions. If they
9748 fail to be flushed, then they will be executed after the
9749 bctr executes. Either of the following modifications
9750 prevent the bad prefetch from happening in the first
9751 place:
9752 .
9753 . lis 9,new_page@ha lis 9,new_page@ha
9754 . addi 9,9,new_page@l addi 9,9,new_page@l
9755 . mtctr 9 mtctr 9
9756 . bctr bctr
9757 . nop b somewhere_else
9758 . b somewhere_else nop
9759 . new_page: new_page:
9760 . */
9761 insn = bfd_get_32 (input_bfd, contents + offset);
9762 if ((insn & (0x3f << 26)) == (18u << 26) /* b,bl,ba,bla */
9763 || ((insn & (0x3f << 26)) == (16u << 26) /* bc,bcl,bca,bcla*/
9764 && (insn & (0x14 << 21)) == (0x14 << 21)) /* with BO=0x14 */
9765 || ((insn & (0x3f << 26)) == (19u << 26)
9766 && (insn & (0x3ff << 1)) == (16u << 1) /* bclr,bclrl */
9767 && (insn & (0x14 << 21)) == (0x14 << 21)))/* with BO=0x14 */
9768 continue;
9769
9770 patch_addr = (start_addr + input_section->size
9771 - relax_info->workaround_size);
9772 patch_addr = (patch_addr + 15) & -16;
9773 patch_off = patch_addr - start_addr;
9774 bfd_put_32 (input_bfd, B + patch_off - offset, contents + offset);
9775
9776 if (rel != NULL
9777 && rel->r_offset >= offset
9778 && rel->r_offset < offset + 4)
9779 {
9780 asection *sreloc;
9781
9782 /* If the insn we are patching had a reloc, adjust the
9783 reloc r_offset so that the reloc applies to the moved
9784 location. This matters for -r and --emit-relocs. */
9785 if (rel + 1 != relend)
9786 {
9787 Elf_Internal_Rela tmp = *rel;
9788
9789 /* Keep the relocs sorted by r_offset. */
9790 memmove (rel, rel + 1, (relend - (rel + 1)) * sizeof (*rel));
9791 relend[-1] = tmp;
9792 }
9793 relend[-1].r_offset += patch_off - offset;
9794
9795 /* Adjust REL16 addends too. */
9796 switch (ELF32_R_TYPE (relend[-1].r_info))
9797 {
9798 case R_PPC_REL16:
9799 case R_PPC_REL16_LO:
9800 case R_PPC_REL16_HI:
9801 case R_PPC_REL16_HA:
9802 relend[-1].r_addend += patch_off - offset;
9803 break;
9804 default:
9805 break;
9806 }
9807
9808 /* If we are building a PIE or shared library with
9809 non-PIC objects, perhaps we had a dynamic reloc too?
9810 If so, the dynamic reloc must move with the insn. */
9811 sreloc = elf_section_data (input_section)->sreloc;
9812 if (sreloc != NULL)
9813 {
9814 Elf32_External_Rela *slo, *shi, *srelend;
9815 bfd_vma soffset;
9816
9817 slo = (Elf32_External_Rela *) sreloc->contents;
9818 shi = srelend = slo + sreloc->reloc_count;
9819 soffset = (offset + input_section->output_section->vma
9820 + input_section->output_offset);
9821 while (slo < shi)
9822 {
9823 Elf32_External_Rela *srel = slo + (shi - slo) / 2;
9824 bfd_elf32_swap_reloca_in (output_bfd, (bfd_byte *) srel,
9825 &outrel);
9826 if (outrel.r_offset < soffset)
9827 slo = srel + 1;
9828 else if (outrel.r_offset > soffset + 3)
9829 shi = srel;
9830 else
9831 {
9832 if (srel + 1 != srelend)
9833 {
9834 memmove (srel, srel + 1,
9835 (srelend - (srel + 1)) * sizeof (*srel));
9836 srel = srelend - 1;
9837 }
9838 outrel.r_offset += patch_off - offset;
9839 bfd_elf32_swap_reloca_out (output_bfd, &outrel,
9840 (bfd_byte *) srel);
9841 break;
9842 }
9843 }
9844 }
9845 }
9846 else
9847 rel = NULL;
9848
9849 if ((insn & (0x3f << 26)) == (16u << 26) /* bc */
9850 && (insn & 2) == 0 /* relative */)
9851 {
9852 bfd_vma delta = ((insn & 0xfffc) ^ 0x8000) - 0x8000;
9853
9854 delta += offset - patch_off;
9855 if (bfd_link_relocatable (info) && rel != NULL)
9856 delta = 0;
9857 if (!bfd_link_relocatable (info) && rel != NULL)
9858 {
9859 enum elf_ppc_reloc_type r_type;
9860
9861 r_type = ELF32_R_TYPE (relend[-1].r_info);
9862 if (r_type == R_PPC_REL14_BRTAKEN)
9863 insn |= BRANCH_PREDICT_BIT;
9864 else if (r_type == R_PPC_REL14_BRNTAKEN)
9865 insn &= ~BRANCH_PREDICT_BIT;
9866 else
9867 BFD_ASSERT (r_type == R_PPC_REL14);
9868
9869 if ((r_type == R_PPC_REL14_BRTAKEN
9870 || r_type == R_PPC_REL14_BRNTAKEN)
9871 && delta + 0x8000 < 0x10000
9872 && (bfd_signed_vma) delta < 0)
9873 insn ^= BRANCH_PREDICT_BIT;
9874 }
9875 if (delta + 0x8000 < 0x10000)
9876 {
9877 bfd_put_32 (input_bfd,
9878 (insn & ~0xfffc) | (delta & 0xfffc),
9879 contents + patch_off);
9880 patch_off += 4;
9881 bfd_put_32 (input_bfd,
9882 B | ((offset + 4 - patch_off) & 0x3fffffc),
9883 contents + patch_off);
9884 patch_off += 4;
9885 }
9886 else
9887 {
9888 if (rel != NULL)
9889 {
9890 unsigned int r_sym = ELF32_R_SYM (relend[-1].r_info);
9891
9892 relend[-1].r_offset += 8;
9893 relend[-1].r_info = ELF32_R_INFO (r_sym, R_PPC_REL24);
9894 }
9895 bfd_put_32 (input_bfd,
9896 (insn & ~0xfffc) | 8,
9897 contents + patch_off);
9898 patch_off += 4;
9899 bfd_put_32 (input_bfd,
9900 B | ((offset + 4 - patch_off) & 0x3fffffc),
9901 contents + patch_off);
9902 patch_off += 4;
9903 bfd_put_32 (input_bfd,
9904 B | ((delta - 8) & 0x3fffffc),
9905 contents + patch_off);
9906 patch_off += 4;
9907 }
9908 }
9909 else
9910 {
9911 bfd_put_32 (input_bfd, insn, contents + patch_off);
9912 patch_off += 4;
9913 bfd_put_32 (input_bfd,
9914 B | ((offset + 4 - patch_off) & 0x3fffffc),
9915 contents + patch_off);
9916 patch_off += 4;
9917 }
9918 BFD_ASSERT (patch_off <= input_section->size);
9919 relax_info->workaround_size = input_section->size - patch_off;
9920 }
9921 }
9922
9923 return ret;
9924 }
9925 \f
9926 /* Finish up dynamic symbol handling. We set the contents of various
9927 dynamic sections here. */
9928
9929 static bfd_boolean
9930 ppc_elf_finish_dynamic_symbol (bfd *output_bfd,
9931 struct bfd_link_info *info,
9932 struct elf_link_hash_entry *h,
9933 Elf_Internal_Sym *sym)
9934 {
9935 struct ppc_elf_link_hash_table *htab;
9936 struct plt_entry *ent;
9937 bfd_boolean doneone;
9938
9939 #ifdef DEBUG
9940 fprintf (stderr, "ppc_elf_finish_dynamic_symbol called for %s",
9941 h->root.root.string);
9942 #endif
9943
9944 htab = ppc_elf_hash_table (info);
9945 BFD_ASSERT (htab->elf.dynobj != NULL);
9946
9947 doneone = FALSE;
9948 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
9949 if (ent->plt.offset != (bfd_vma) -1)
9950 {
9951 if (!doneone)
9952 {
9953 Elf_Internal_Rela rela;
9954 bfd_byte *loc;
9955 bfd_vma reloc_index;
9956
9957 if (htab->plt_type == PLT_NEW
9958 || !htab->elf.dynamic_sections_created
9959 || h->dynindx == -1)
9960 reloc_index = ent->plt.offset / 4;
9961 else
9962 {
9963 reloc_index = ((ent->plt.offset - htab->plt_initial_entry_size)
9964 / htab->plt_slot_size);
9965 if (reloc_index > PLT_NUM_SINGLE_ENTRIES
9966 && htab->plt_type == PLT_OLD)
9967 reloc_index -= (reloc_index - PLT_NUM_SINGLE_ENTRIES) / 2;
9968 }
9969
9970 /* This symbol has an entry in the procedure linkage table.
9971 Set it up. */
9972 if (htab->plt_type == PLT_VXWORKS
9973 && htab->elf.dynamic_sections_created
9974 && h->dynindx != -1)
9975 {
9976 bfd_vma got_offset;
9977 const bfd_vma *plt_entry;
9978
9979 /* The first three entries in .got.plt are reserved. */
9980 got_offset = (reloc_index + 3) * 4;
9981
9982 /* Use the right PLT. */
9983 plt_entry = bfd_link_pic (info) ? ppc_elf_vxworks_pic_plt_entry
9984 : ppc_elf_vxworks_plt_entry;
9985
9986 /* Fill in the .plt on VxWorks. */
9987 if (bfd_link_pic (info))
9988 {
9989 bfd_put_32 (output_bfd,
9990 plt_entry[0] | PPC_HA (got_offset),
9991 htab->elf.splt->contents + ent->plt.offset + 0);
9992 bfd_put_32 (output_bfd,
9993 plt_entry[1] | PPC_LO (got_offset),
9994 htab->elf.splt->contents + ent->plt.offset + 4);
9995 }
9996 else
9997 {
9998 bfd_vma got_loc = got_offset + SYM_VAL (htab->elf.hgot);
9999
10000 bfd_put_32 (output_bfd,
10001 plt_entry[0] | PPC_HA (got_loc),
10002 htab->elf.splt->contents + ent->plt.offset + 0);
10003 bfd_put_32 (output_bfd,
10004 plt_entry[1] | PPC_LO (got_loc),
10005 htab->elf.splt->contents + ent->plt.offset + 4);
10006 }
10007
10008 bfd_put_32 (output_bfd, plt_entry[2],
10009 htab->elf.splt->contents + ent->plt.offset + 8);
10010 bfd_put_32 (output_bfd, plt_entry[3],
10011 htab->elf.splt->contents + ent->plt.offset + 12);
10012
10013 /* This instruction is an immediate load. The value loaded is
10014 the byte offset of the R_PPC_JMP_SLOT relocation from the
10015 start of the .rela.plt section. The value is stored in the
10016 low-order 16 bits of the load instruction. */
10017 /* NOTE: It appears that this is now an index rather than a
10018 prescaled offset. */
10019 bfd_put_32 (output_bfd,
10020 plt_entry[4] | reloc_index,
10021 htab->elf.splt->contents + ent->plt.offset + 16);
10022 /* This instruction is a PC-relative branch whose target is
10023 the start of the PLT section. The address of this branch
10024 instruction is 20 bytes beyond the start of this PLT entry.
10025 The address is encoded in bits 6-29, inclusive. The value
10026 stored is right-shifted by two bits, permitting a 26-bit
10027 offset. */
10028 bfd_put_32 (output_bfd,
10029 (plt_entry[5]
10030 | (-(ent->plt.offset + 20) & 0x03fffffc)),
10031 htab->elf.splt->contents + ent->plt.offset + 20);
10032 bfd_put_32 (output_bfd, plt_entry[6],
10033 htab->elf.splt->contents + ent->plt.offset + 24);
10034 bfd_put_32 (output_bfd, plt_entry[7],
10035 htab->elf.splt->contents + ent->plt.offset + 28);
10036
10037 /* Fill in the GOT entry corresponding to this PLT slot with
10038 the address immediately after the "bctr" instruction
10039 in this PLT entry. */
10040 bfd_put_32 (output_bfd, (htab->elf.splt->output_section->vma
10041 + htab->elf.splt->output_offset
10042 + ent->plt.offset + 16),
10043 htab->elf.sgotplt->contents + got_offset);
10044
10045 if (!bfd_link_pic (info))
10046 {
10047 /* Fill in a couple of entries in .rela.plt.unloaded. */
10048 loc = htab->srelplt2->contents
10049 + ((VXWORKS_PLTRESOLVE_RELOCS + reloc_index
10050 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS)
10051 * sizeof (Elf32_External_Rela));
10052
10053 /* Provide the @ha relocation for the first instruction. */
10054 rela.r_offset = (htab->elf.splt->output_section->vma
10055 + htab->elf.splt->output_offset
10056 + ent->plt.offset + 2);
10057 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
10058 R_PPC_ADDR16_HA);
10059 rela.r_addend = got_offset;
10060 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10061 loc += sizeof (Elf32_External_Rela);
10062
10063 /* Provide the @l relocation for the second instruction. */
10064 rela.r_offset = (htab->elf.splt->output_section->vma
10065 + htab->elf.splt->output_offset
10066 + ent->plt.offset + 6);
10067 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
10068 R_PPC_ADDR16_LO);
10069 rela.r_addend = got_offset;
10070 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10071 loc += sizeof (Elf32_External_Rela);
10072
10073 /* Provide a relocation for the GOT entry corresponding to this
10074 PLT slot. Point it at the middle of the .plt entry. */
10075 rela.r_offset = (htab->elf.sgotplt->output_section->vma
10076 + htab->elf.sgotplt->output_offset
10077 + got_offset);
10078 rela.r_info = ELF32_R_INFO (htab->elf.hplt->indx,
10079 R_PPC_ADDR32);
10080 rela.r_addend = ent->plt.offset + 16;
10081 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10082 }
10083
10084 /* VxWorks uses non-standard semantics for R_PPC_JMP_SLOT.
10085 In particular, the offset for the relocation is not the
10086 address of the PLT entry for this function, as specified
10087 by the ABI. Instead, the offset is set to the address of
10088 the GOT slot for this function. See EABI 4.4.4.1. */
10089 rela.r_offset = (htab->elf.sgotplt->output_section->vma
10090 + htab->elf.sgotplt->output_offset
10091 + got_offset);
10092
10093 }
10094 else
10095 {
10096 asection *splt = htab->elf.splt;
10097 if (!htab->elf.dynamic_sections_created
10098 || h->dynindx == -1)
10099 splt = htab->elf.iplt;
10100
10101 rela.r_offset = (splt->output_section->vma
10102 + splt->output_offset
10103 + ent->plt.offset);
10104 if (htab->plt_type == PLT_OLD
10105 || !htab->elf.dynamic_sections_created
10106 || h->dynindx == -1)
10107 {
10108 /* We don't need to fill in the .plt. The ppc dynamic
10109 linker will fill it in. */
10110 }
10111 else
10112 {
10113 bfd_vma val = (htab->glink_pltresolve + ent->plt.offset
10114 + htab->glink->output_section->vma
10115 + htab->glink->output_offset);
10116 bfd_put_32 (output_bfd, val,
10117 splt->contents + ent->plt.offset);
10118 }
10119 }
10120
10121 /* Fill in the entry in the .rela.plt section. */
10122 rela.r_addend = 0;
10123 if (!htab->elf.dynamic_sections_created
10124 || h->dynindx == -1)
10125 {
10126 BFD_ASSERT (h->type == STT_GNU_IFUNC
10127 && h->def_regular
10128 && (h->root.type == bfd_link_hash_defined
10129 || h->root.type == bfd_link_hash_defweak));
10130 rela.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
10131 rela.r_addend = SYM_VAL (h);
10132 }
10133 else
10134 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_JMP_SLOT);
10135
10136 if (!htab->elf.dynamic_sections_created
10137 || h->dynindx == -1)
10138 {
10139 loc = (htab->elf.irelplt->contents
10140 + (htab->elf.irelplt->reloc_count++
10141 * sizeof (Elf32_External_Rela)));
10142 htab->local_ifunc_resolver = 1;
10143 }
10144 else
10145 {
10146 loc = (htab->elf.srelplt->contents
10147 + reloc_index * sizeof (Elf32_External_Rela));
10148 if (h->type == STT_GNU_IFUNC && is_static_defined (h))
10149 htab->maybe_local_ifunc_resolver = 1;
10150 }
10151 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10152
10153 if (!h->def_regular)
10154 {
10155 /* Mark the symbol as undefined, rather than as
10156 defined in the .plt section. Leave the value if
10157 there were any relocations where pointer equality
10158 matters (this is a clue for the dynamic linker, to
10159 make function pointer comparisons work between an
10160 application and shared library), otherwise set it
10161 to zero. */
10162 sym->st_shndx = SHN_UNDEF;
10163 if (!h->pointer_equality_needed)
10164 sym->st_value = 0;
10165 else if (!h->ref_regular_nonweak)
10166 {
10167 /* This breaks function pointer comparisons, but
10168 that is better than breaking tests for a NULL
10169 function pointer. */
10170 sym->st_value = 0;
10171 }
10172 }
10173 else if (h->type == STT_GNU_IFUNC
10174 && !bfd_link_pic (info))
10175 {
10176 /* Set the value of ifunc symbols in a non-pie
10177 executable to the glink entry. This is to avoid
10178 text relocations. We can't do this for ifunc in
10179 allocate_dynrelocs, as we do for normal dynamic
10180 function symbols with plt entries, because we need
10181 to keep the original value around for the ifunc
10182 relocation. */
10183 sym->st_shndx = (_bfd_elf_section_from_bfd_section
10184 (output_bfd, htab->glink->output_section));
10185 sym->st_value = (ent->glink_offset
10186 + htab->glink->output_offset
10187 + htab->glink->output_section->vma);
10188 }
10189 doneone = TRUE;
10190 }
10191
10192 if (htab->plt_type == PLT_NEW
10193 || !htab->elf.dynamic_sections_created
10194 || h->dynindx == -1)
10195 {
10196 unsigned char *p;
10197 asection *splt = htab->elf.splt;
10198
10199 if (!htab->elf.dynamic_sections_created
10200 || h->dynindx == -1)
10201 splt = htab->elf.iplt;
10202
10203 p = (unsigned char *) htab->glink->contents + ent->glink_offset;
10204 write_glink_stub (h, ent, splt, p, info);
10205
10206 if (!bfd_link_pic (info))
10207 /* We only need one non-PIC glink stub. */
10208 break;
10209 }
10210 else
10211 break;
10212 }
10213
10214 if (h->needs_copy)
10215 {
10216 asection *s;
10217 Elf_Internal_Rela rela;
10218 bfd_byte *loc;
10219
10220 /* This symbols needs a copy reloc. Set it up. */
10221
10222 #ifdef DEBUG
10223 fprintf (stderr, ", copy");
10224 #endif
10225
10226 BFD_ASSERT (h->dynindx != -1);
10227
10228 if (ppc_elf_hash_entry (h)->has_sda_refs)
10229 s = htab->relsbss;
10230 else if (h->root.u.def.section == htab->elf.sdynrelro)
10231 s = htab->elf.sreldynrelro;
10232 else
10233 s = htab->elf.srelbss;
10234 BFD_ASSERT (s != NULL);
10235
10236 rela.r_offset = SYM_VAL (h);
10237 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_COPY);
10238 rela.r_addend = 0;
10239 loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
10240 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10241 }
10242
10243 #ifdef DEBUG
10244 fprintf (stderr, "\n");
10245 #endif
10246
10247 return TRUE;
10248 }
10249 \f
10250 static enum elf_reloc_type_class
10251 ppc_elf_reloc_type_class (const struct bfd_link_info *info,
10252 const asection *rel_sec,
10253 const Elf_Internal_Rela *rela)
10254 {
10255 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
10256
10257 if (rel_sec == htab->elf.irelplt)
10258 return reloc_class_ifunc;
10259
10260 switch (ELF32_R_TYPE (rela->r_info))
10261 {
10262 case R_PPC_RELATIVE:
10263 return reloc_class_relative;
10264 case R_PPC_JMP_SLOT:
10265 return reloc_class_plt;
10266 case R_PPC_COPY:
10267 return reloc_class_copy;
10268 default:
10269 return reloc_class_normal;
10270 }
10271 }
10272 \f
10273 /* Finish up the dynamic sections. */
10274
10275 static bfd_boolean
10276 ppc_elf_finish_dynamic_sections (bfd *output_bfd,
10277 struct bfd_link_info *info)
10278 {
10279 asection *sdyn;
10280 struct ppc_elf_link_hash_table *htab;
10281 bfd_vma got;
10282 bfd *dynobj;
10283 bfd_boolean ret = TRUE;
10284
10285 #ifdef DEBUG
10286 fprintf (stderr, "ppc_elf_finish_dynamic_sections called\n");
10287 #endif
10288
10289 htab = ppc_elf_hash_table (info);
10290 dynobj = htab->elf.dynobj;
10291 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
10292
10293 got = 0;
10294 if (htab->elf.hgot != NULL)
10295 got = SYM_VAL (htab->elf.hgot);
10296
10297 if (htab->elf.dynamic_sections_created)
10298 {
10299 Elf32_External_Dyn *dyncon, *dynconend;
10300
10301 BFD_ASSERT (htab->elf.splt != NULL && sdyn != NULL);
10302
10303 dyncon = (Elf32_External_Dyn *) sdyn->contents;
10304 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
10305 for (; dyncon < dynconend; dyncon++)
10306 {
10307 Elf_Internal_Dyn dyn;
10308 asection *s;
10309
10310 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
10311
10312 switch (dyn.d_tag)
10313 {
10314 case DT_PLTGOT:
10315 if (htab->is_vxworks)
10316 s = htab->elf.sgotplt;
10317 else
10318 s = htab->elf.splt;
10319 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
10320 break;
10321
10322 case DT_PLTRELSZ:
10323 dyn.d_un.d_val = htab->elf.srelplt->size;
10324 break;
10325
10326 case DT_JMPREL:
10327 s = htab->elf.srelplt;
10328 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
10329 break;
10330
10331 case DT_PPC_GOT:
10332 dyn.d_un.d_ptr = got;
10333 break;
10334
10335 case DT_TEXTREL:
10336 if (htab->local_ifunc_resolver)
10337 info->callbacks->einfo
10338 (_("%X%P: text relocations and GNU indirect "
10339 "functions will result in a segfault at runtime\n"));
10340 else if (htab->maybe_local_ifunc_resolver)
10341 info->callbacks->einfo
10342 (_("%P: warning: text relocations and GNU indirect "
10343 "functions may result in a segfault at runtime\n"));
10344 continue;
10345
10346 default:
10347 if (htab->is_vxworks
10348 && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn))
10349 break;
10350 continue;
10351 }
10352
10353 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
10354 }
10355 }
10356
10357 if (htab->elf.sgot != NULL
10358 && htab->elf.sgot->output_section != bfd_abs_section_ptr)
10359 {
10360 if (htab->elf.hgot->root.u.def.section == htab->elf.sgot
10361 || htab->elf.hgot->root.u.def.section == htab->elf.sgotplt)
10362 {
10363 unsigned char *p = htab->elf.hgot->root.u.def.section->contents;
10364
10365 p += htab->elf.hgot->root.u.def.value;
10366 if (htab->plt_type == PLT_OLD)
10367 {
10368 /* Add a blrl instruction at _GLOBAL_OFFSET_TABLE_-4
10369 so that a function can easily find the address of
10370 _GLOBAL_OFFSET_TABLE_. */
10371 BFD_ASSERT (htab->elf.hgot->root.u.def.value - 4
10372 < htab->elf.hgot->root.u.def.section->size);
10373 bfd_put_32 (output_bfd, 0x4e800021, p - 4);
10374 }
10375
10376 if (sdyn != NULL)
10377 {
10378 bfd_vma val = sdyn->output_section->vma + sdyn->output_offset;
10379 BFD_ASSERT (htab->elf.hgot->root.u.def.value
10380 < htab->elf.hgot->root.u.def.section->size);
10381 bfd_put_32 (output_bfd, val, p);
10382 }
10383 }
10384 else
10385 {
10386 /* xgettext:c-format */
10387 _bfd_error_handler (_("%s not defined in linker created %pA"),
10388 htab->elf.hgot->root.root.string,
10389 (htab->elf.sgotplt != NULL
10390 ? htab->elf.sgotplt : htab->elf.sgot));
10391 bfd_set_error (bfd_error_bad_value);
10392 ret = FALSE;
10393 }
10394
10395 elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize = 4;
10396 }
10397
10398 /* Fill in the first entry in the VxWorks procedure linkage table. */
10399 if (htab->is_vxworks
10400 && htab->elf.splt != NULL
10401 && htab->elf.splt->size != 0
10402 && htab->elf.splt->output_section != bfd_abs_section_ptr)
10403 {
10404 asection *splt = htab->elf.splt;
10405 /* Use the right PLT. */
10406 const bfd_vma *plt_entry = (bfd_link_pic (info)
10407 ? ppc_elf_vxworks_pic_plt0_entry
10408 : ppc_elf_vxworks_plt0_entry);
10409
10410 if (!bfd_link_pic (info))
10411 {
10412 bfd_vma got_value = SYM_VAL (htab->elf.hgot);
10413
10414 bfd_put_32 (output_bfd, plt_entry[0] | PPC_HA (got_value),
10415 splt->contents + 0);
10416 bfd_put_32 (output_bfd, plt_entry[1] | PPC_LO (got_value),
10417 splt->contents + 4);
10418 }
10419 else
10420 {
10421 bfd_put_32 (output_bfd, plt_entry[0], splt->contents + 0);
10422 bfd_put_32 (output_bfd, plt_entry[1], splt->contents + 4);
10423 }
10424 bfd_put_32 (output_bfd, plt_entry[2], splt->contents + 8);
10425 bfd_put_32 (output_bfd, plt_entry[3], splt->contents + 12);
10426 bfd_put_32 (output_bfd, plt_entry[4], splt->contents + 16);
10427 bfd_put_32 (output_bfd, plt_entry[5], splt->contents + 20);
10428 bfd_put_32 (output_bfd, plt_entry[6], splt->contents + 24);
10429 bfd_put_32 (output_bfd, plt_entry[7], splt->contents + 28);
10430
10431 if (! bfd_link_pic (info))
10432 {
10433 Elf_Internal_Rela rela;
10434 bfd_byte *loc;
10435
10436 loc = htab->srelplt2->contents;
10437
10438 /* Output the @ha relocation for the first instruction. */
10439 rela.r_offset = (htab->elf.splt->output_section->vma
10440 + htab->elf.splt->output_offset
10441 + 2);
10442 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
10443 rela.r_addend = 0;
10444 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10445 loc += sizeof (Elf32_External_Rela);
10446
10447 /* Output the @l relocation for the second instruction. */
10448 rela.r_offset = (htab->elf.splt->output_section->vma
10449 + htab->elf.splt->output_offset
10450 + 6);
10451 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
10452 rela.r_addend = 0;
10453 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10454 loc += sizeof (Elf32_External_Rela);
10455
10456 /* Fix up the remaining relocations. They may have the wrong
10457 symbol index for _G_O_T_ or _P_L_T_ depending on the order
10458 in which symbols were output. */
10459 while (loc < htab->srelplt2->contents + htab->srelplt2->size)
10460 {
10461 Elf_Internal_Rela rel;
10462
10463 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
10464 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
10465 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
10466 loc += sizeof (Elf32_External_Rela);
10467
10468 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
10469 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
10470 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
10471 loc += sizeof (Elf32_External_Rela);
10472
10473 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
10474 rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_PPC_ADDR32);
10475 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
10476 loc += sizeof (Elf32_External_Rela);
10477 }
10478 }
10479 }
10480
10481 if (htab->glink != NULL
10482 && htab->glink->contents != NULL
10483 && htab->elf.dynamic_sections_created)
10484 {
10485 unsigned char *p;
10486 unsigned char *endp;
10487 bfd_vma res0;
10488
10489 /*
10490 * PIC glink code is the following:
10491 *
10492 * # ith PLT code stub.
10493 * addis 11,30,(plt+(i-1)*4-got)@ha
10494 * lwz 11,(plt+(i-1)*4-got)@l(11)
10495 * mtctr 11
10496 * bctr
10497 *
10498 * # A table of branches, one for each plt entry.
10499 * # The idea is that the plt call stub loads ctr and r11 with these
10500 * # addresses, so (r11 - res_0) gives the plt index * 4.
10501 * res_0: b PLTresolve
10502 * res_1: b PLTresolve
10503 * .
10504 * # Some number of entries towards the end can be nops
10505 * res_n_m3: nop
10506 * res_n_m2: nop
10507 * res_n_m1:
10508 *
10509 * PLTresolve:
10510 * addis 11,11,(1f-res_0)@ha
10511 * mflr 0
10512 * bcl 20,31,1f
10513 * 1: addi 11,11,(1b-res_0)@l
10514 * mflr 12
10515 * mtlr 0
10516 * sub 11,11,12 # r11 = index * 4
10517 * addis 12,12,(got+4-1b)@ha
10518 * lwz 0,(got+4-1b)@l(12) # got[1] address of dl_runtime_resolve
10519 * lwz 12,(got+8-1b)@l(12) # got[2] contains the map address
10520 * mtctr 0
10521 * add 0,11,11
10522 * add 11,0,11 # r11 = index * 12 = reloc offset.
10523 * bctr
10524 *
10525 * Non-PIC glink code is a little simpler.
10526 *
10527 * # ith PLT code stub.
10528 * lis 11,(plt+(i-1)*4)@ha
10529 * lwz 11,(plt+(i-1)*4)@l(11)
10530 * mtctr 11
10531 * bctr
10532 *
10533 * The branch table is the same, then comes
10534 *
10535 * PLTresolve:
10536 * lis 12,(got+4)@ha
10537 * addis 11,11,(-res_0)@ha
10538 * lwz 0,(got+4)@l(12) # got[1] address of dl_runtime_resolve
10539 * addi 11,11,(-res_0)@l # r11 = index * 4
10540 * mtctr 0
10541 * add 0,11,11
10542 * lwz 12,(got+8)@l(12) # got[2] contains the map address
10543 * add 11,0,11 # r11 = index * 12 = reloc offset.
10544 * bctr
10545 */
10546
10547 /* Build the branch table, one for each plt entry (less one),
10548 and perhaps some padding. */
10549 p = htab->glink->contents;
10550 p += htab->glink_pltresolve;
10551 endp = htab->glink->contents;
10552 endp += htab->glink->size - GLINK_PLTRESOLVE;
10553 while (p < endp - (htab->params->ppc476_workaround ? 0 : 8 * 4))
10554 {
10555 bfd_put_32 (output_bfd, B + endp - p, p);
10556 p += 4;
10557 }
10558 while (p < endp)
10559 {
10560 bfd_put_32 (output_bfd, NOP, p);
10561 p += 4;
10562 }
10563
10564 res0 = (htab->glink_pltresolve
10565 + htab->glink->output_section->vma
10566 + htab->glink->output_offset);
10567
10568 if (htab->params->ppc476_workaround)
10569 {
10570 /* Ensure that a call stub at the end of a page doesn't
10571 result in prefetch over the end of the page into the
10572 glink branch table. */
10573 bfd_vma pagesize = (bfd_vma) 1 << htab->params->pagesize_p2;
10574 bfd_vma page_addr;
10575 bfd_vma glink_start = (htab->glink->output_section->vma
10576 + htab->glink->output_offset);
10577
10578 for (page_addr = res0 & -pagesize;
10579 page_addr > glink_start;
10580 page_addr -= pagesize)
10581 {
10582 /* We have a plt call stub that may need fixing. */
10583 bfd_byte *loc;
10584 unsigned int insn;
10585
10586 loc = htab->glink->contents + page_addr - 4 - glink_start;
10587 insn = bfd_get_32 (output_bfd, loc);
10588 if (insn == BCTR)
10589 {
10590 /* By alignment, we know that there must be at least
10591 one other call stub before this one. */
10592 insn = bfd_get_32 (output_bfd, loc - 16);
10593 if (insn == BCTR)
10594 bfd_put_32 (output_bfd, B | (-16 & 0x3fffffc), loc);
10595 else
10596 bfd_put_32 (output_bfd, B | (-20 & 0x3fffffc), loc);
10597 }
10598 }
10599 }
10600
10601 /* Last comes the PLTresolve stub. */
10602 endp = p + GLINK_PLTRESOLVE;
10603 if (bfd_link_pic (info))
10604 {
10605 bfd_vma bcl;
10606
10607 bcl = (htab->glink->size - GLINK_PLTRESOLVE + 3*4
10608 + htab->glink->output_section->vma
10609 + htab->glink->output_offset);
10610
10611 bfd_put_32 (output_bfd, ADDIS_11_11 + PPC_HA (bcl - res0), p);
10612 p += 4;
10613 bfd_put_32 (output_bfd, MFLR_0, p);
10614 p += 4;
10615 bfd_put_32 (output_bfd, BCL_20_31, p);
10616 p += 4;
10617 bfd_put_32 (output_bfd, ADDI_11_11 + PPC_LO (bcl - res0), p);
10618 p += 4;
10619 bfd_put_32 (output_bfd, MFLR_12, p);
10620 p += 4;
10621 bfd_put_32 (output_bfd, MTLR_0, p);
10622 p += 4;
10623 bfd_put_32 (output_bfd, SUB_11_11_12, p);
10624 p += 4;
10625 bfd_put_32 (output_bfd, ADDIS_12_12 + PPC_HA (got + 4 - bcl), p);
10626 p += 4;
10627 if (PPC_HA (got + 4 - bcl) == PPC_HA (got + 8 - bcl))
10628 {
10629 bfd_put_32 (output_bfd, LWZ_0_12 + PPC_LO (got + 4 - bcl), p);
10630 p += 4;
10631 bfd_put_32 (output_bfd, LWZ_12_12 + PPC_LO (got + 8 - bcl), p);
10632 p += 4;
10633 }
10634 else
10635 {
10636 bfd_put_32 (output_bfd, LWZU_0_12 + PPC_LO (got + 4 - bcl), p);
10637 p += 4;
10638 bfd_put_32 (output_bfd, LWZ_12_12 + 4, p);
10639 p += 4;
10640 }
10641 bfd_put_32 (output_bfd, MTCTR_0, p);
10642 p += 4;
10643 bfd_put_32 (output_bfd, ADD_0_11_11, p);
10644 }
10645 else
10646 {
10647 bfd_put_32 (output_bfd, LIS_12 + PPC_HA (got + 4), p);
10648 p += 4;
10649 bfd_put_32 (output_bfd, ADDIS_11_11 + PPC_HA (-res0), p);
10650 p += 4;
10651 if (PPC_HA (got + 4) == PPC_HA (got + 8))
10652 bfd_put_32 (output_bfd, LWZ_0_12 + PPC_LO (got + 4), p);
10653 else
10654 bfd_put_32 (output_bfd, LWZU_0_12 + PPC_LO (got + 4), p);
10655 p += 4;
10656 bfd_put_32 (output_bfd, ADDI_11_11 + PPC_LO (-res0), p);
10657 p += 4;
10658 bfd_put_32 (output_bfd, MTCTR_0, p);
10659 p += 4;
10660 bfd_put_32 (output_bfd, ADD_0_11_11, p);
10661 p += 4;
10662 if (PPC_HA (got + 4) == PPC_HA (got + 8))
10663 bfd_put_32 (output_bfd, LWZ_12_12 + PPC_LO (got + 8), p);
10664 else
10665 bfd_put_32 (output_bfd, LWZ_12_12 + 4, p);
10666 }
10667 p += 4;
10668 bfd_put_32 (output_bfd, ADD_11_0_11, p);
10669 p += 4;
10670 bfd_put_32 (output_bfd, BCTR, p);
10671 p += 4;
10672 while (p < endp)
10673 {
10674 bfd_put_32 (output_bfd,
10675 htab->params->ppc476_workaround ? BA : NOP, p);
10676 p += 4;
10677 }
10678 BFD_ASSERT (p == endp);
10679 }
10680
10681 if (htab->glink_eh_frame != NULL
10682 && htab->glink_eh_frame->contents != NULL)
10683 {
10684 unsigned char *p = htab->glink_eh_frame->contents;
10685 bfd_vma val;
10686
10687 p += sizeof (glink_eh_frame_cie);
10688 /* FDE length. */
10689 p += 4;
10690 /* CIE pointer. */
10691 p += 4;
10692 /* Offset to .glink. */
10693 val = (htab->glink->output_section->vma
10694 + htab->glink->output_offset);
10695 val -= (htab->glink_eh_frame->output_section->vma
10696 + htab->glink_eh_frame->output_offset);
10697 val -= p - htab->glink_eh_frame->contents;
10698 bfd_put_32 (htab->elf.dynobj, val, p);
10699
10700 if (htab->glink_eh_frame->sec_info_type == SEC_INFO_TYPE_EH_FRAME
10701 && !_bfd_elf_write_section_eh_frame (output_bfd, info,
10702 htab->glink_eh_frame,
10703 htab->glink_eh_frame->contents))
10704 return FALSE;
10705 }
10706
10707 return ret;
10708 }
10709 \f
10710 #define TARGET_LITTLE_SYM powerpc_elf32_le_vec
10711 #define TARGET_LITTLE_NAME "elf32-powerpcle"
10712 #define TARGET_BIG_SYM powerpc_elf32_vec
10713 #define TARGET_BIG_NAME "elf32-powerpc"
10714 #define ELF_ARCH bfd_arch_powerpc
10715 #define ELF_TARGET_ID PPC32_ELF_DATA
10716 #define ELF_MACHINE_CODE EM_PPC
10717 #ifdef __QNXTARGET__
10718 #define ELF_MAXPAGESIZE 0x1000
10719 #define ELF_COMMONPAGESIZE 0x1000
10720 #else
10721 #define ELF_MAXPAGESIZE 0x10000
10722 #define ELF_COMMONPAGESIZE 0x10000
10723 #endif
10724 #define ELF_MINPAGESIZE 0x1000
10725 #define elf_info_to_howto ppc_elf_info_to_howto
10726
10727 #ifdef EM_CYGNUS_POWERPC
10728 #define ELF_MACHINE_ALT1 EM_CYGNUS_POWERPC
10729 #endif
10730
10731 #ifdef EM_PPC_OLD
10732 #define ELF_MACHINE_ALT2 EM_PPC_OLD
10733 #endif
10734
10735 #define elf_backend_plt_not_loaded 1
10736 #define elf_backend_want_dynrelro 1
10737 #define elf_backend_can_gc_sections 1
10738 #define elf_backend_can_refcount 1
10739 #define elf_backend_rela_normal 1
10740 #define elf_backend_caches_rawsize 1
10741
10742 #define bfd_elf32_mkobject ppc_elf_mkobject
10743 #define bfd_elf32_bfd_merge_private_bfd_data ppc_elf_merge_private_bfd_data
10744 #define bfd_elf32_bfd_relax_section ppc_elf_relax_section
10745 #define bfd_elf32_bfd_reloc_type_lookup ppc_elf_reloc_type_lookup
10746 #define bfd_elf32_bfd_reloc_name_lookup ppc_elf_reloc_name_lookup
10747 #define bfd_elf32_bfd_set_private_flags ppc_elf_set_private_flags
10748 #define bfd_elf32_bfd_link_hash_table_create ppc_elf_link_hash_table_create
10749 #define bfd_elf32_get_synthetic_symtab ppc_elf_get_synthetic_symtab
10750
10751 #define elf_backend_object_p ppc_elf_object_p
10752 #define elf_backend_gc_mark_hook ppc_elf_gc_mark_hook
10753 #define elf_backend_section_from_shdr ppc_elf_section_from_shdr
10754 #define elf_backend_relocate_section ppc_elf_relocate_section
10755 #define elf_backend_create_dynamic_sections ppc_elf_create_dynamic_sections
10756 #define elf_backend_check_relocs ppc_elf_check_relocs
10757 #define elf_backend_relocs_compatible _bfd_elf_relocs_compatible
10758 #define elf_backend_copy_indirect_symbol ppc_elf_copy_indirect_symbol
10759 #define elf_backend_adjust_dynamic_symbol ppc_elf_adjust_dynamic_symbol
10760 #define elf_backend_add_symbol_hook ppc_elf_add_symbol_hook
10761 #define elf_backend_size_dynamic_sections ppc_elf_size_dynamic_sections
10762 #define elf_backend_hash_symbol ppc_elf_hash_symbol
10763 #define elf_backend_finish_dynamic_symbol ppc_elf_finish_dynamic_symbol
10764 #define elf_backend_finish_dynamic_sections ppc_elf_finish_dynamic_sections
10765 #define elf_backend_fake_sections ppc_elf_fake_sections
10766 #define elf_backend_additional_program_headers ppc_elf_additional_program_headers
10767 #define elf_backend_modify_segment_map ppc_elf_modify_segment_map
10768 #define elf_backend_grok_prstatus ppc_elf_grok_prstatus
10769 #define elf_backend_grok_psinfo ppc_elf_grok_psinfo
10770 #define elf_backend_write_core_note ppc_elf_write_core_note
10771 #define elf_backend_reloc_type_class ppc_elf_reloc_type_class
10772 #define elf_backend_begin_write_processing ppc_elf_begin_write_processing
10773 #define elf_backend_final_write_processing ppc_elf_final_write_processing
10774 #define elf_backend_write_section ppc_elf_write_section
10775 #define elf_backend_get_sec_type_attr ppc_elf_get_sec_type_attr
10776 #define elf_backend_plt_sym_val ppc_elf_plt_sym_val
10777 #define elf_backend_action_discarded ppc_elf_action_discarded
10778 #define elf_backend_init_index_section _bfd_elf_init_1_index_section
10779 #define elf_backend_lookup_section_flags_hook ppc_elf_lookup_section_flags
10780
10781 #include "elf32-target.h"
10782
10783 /* FreeBSD Target */
10784
10785 #undef TARGET_LITTLE_SYM
10786 #undef TARGET_LITTLE_NAME
10787
10788 #undef TARGET_BIG_SYM
10789 #define TARGET_BIG_SYM powerpc_elf32_fbsd_vec
10790 #undef TARGET_BIG_NAME
10791 #define TARGET_BIG_NAME "elf32-powerpc-freebsd"
10792
10793 #undef ELF_OSABI
10794 #define ELF_OSABI ELFOSABI_FREEBSD
10795
10796 #undef elf32_bed
10797 #define elf32_bed elf32_powerpc_fbsd_bed
10798
10799 #include "elf32-target.h"
10800
10801 /* VxWorks Target */
10802
10803 #undef TARGET_LITTLE_SYM
10804 #undef TARGET_LITTLE_NAME
10805
10806 #undef TARGET_BIG_SYM
10807 #define TARGET_BIG_SYM powerpc_elf32_vxworks_vec
10808 #undef TARGET_BIG_NAME
10809 #define TARGET_BIG_NAME "elf32-powerpc-vxworks"
10810
10811 #undef ELF_OSABI
10812
10813 /* VxWorks uses the elf default section flags for .plt. */
10814 static const struct bfd_elf_special_section *
10815 ppc_elf_vxworks_get_sec_type_attr (bfd *abfd, asection *sec)
10816 {
10817 if (sec->name == NULL)
10818 return NULL;
10819
10820 if (strcmp (sec->name, ".plt") == 0)
10821 return _bfd_elf_get_sec_type_attr (abfd, sec);
10822
10823 return ppc_elf_get_sec_type_attr (abfd, sec);
10824 }
10825
10826 /* Like ppc_elf_link_hash_table_create, but overrides
10827 appropriately for VxWorks. */
10828 static struct bfd_link_hash_table *
10829 ppc_elf_vxworks_link_hash_table_create (bfd *abfd)
10830 {
10831 struct bfd_link_hash_table *ret;
10832
10833 ret = ppc_elf_link_hash_table_create (abfd);
10834 if (ret)
10835 {
10836 struct ppc_elf_link_hash_table *htab
10837 = (struct ppc_elf_link_hash_table *)ret;
10838 htab->is_vxworks = 1;
10839 htab->plt_type = PLT_VXWORKS;
10840 htab->plt_entry_size = VXWORKS_PLT_ENTRY_SIZE;
10841 htab->plt_slot_size = VXWORKS_PLT_ENTRY_SIZE;
10842 htab->plt_initial_entry_size = VXWORKS_PLT_INITIAL_ENTRY_SIZE;
10843 }
10844 return ret;
10845 }
10846
10847 /* Tweak magic VxWorks symbols as they are loaded. */
10848 static bfd_boolean
10849 ppc_elf_vxworks_add_symbol_hook (bfd *abfd,
10850 struct bfd_link_info *info,
10851 Elf_Internal_Sym *sym,
10852 const char **namep,
10853 flagword *flagsp,
10854 asection **secp,
10855 bfd_vma *valp)
10856 {
10857 if (!elf_vxworks_add_symbol_hook (abfd, info, sym, namep, flagsp, secp,
10858 valp))
10859 return FALSE;
10860
10861 return ppc_elf_add_symbol_hook (abfd, info, sym, namep, flagsp, secp, valp);
10862 }
10863
10864 static void
10865 ppc_elf_vxworks_final_write_processing (bfd *abfd, bfd_boolean linker)
10866 {
10867 ppc_elf_final_write_processing (abfd, linker);
10868 elf_vxworks_final_write_processing (abfd, linker);
10869 }
10870
10871 /* On VxWorks, we emit relocations against _PROCEDURE_LINKAGE_TABLE_, so
10872 define it. */
10873 #undef elf_backend_want_plt_sym
10874 #define elf_backend_want_plt_sym 1
10875 #undef elf_backend_want_got_plt
10876 #define elf_backend_want_got_plt 1
10877 #undef elf_backend_got_symbol_offset
10878 #define elf_backend_got_symbol_offset 0
10879 #undef elf_backend_plt_not_loaded
10880 #define elf_backend_plt_not_loaded 0
10881 #undef elf_backend_plt_readonly
10882 #define elf_backend_plt_readonly 1
10883 #undef elf_backend_got_header_size
10884 #define elf_backend_got_header_size 12
10885 #undef elf_backend_dtrel_excludes_plt
10886 #define elf_backend_dtrel_excludes_plt 1
10887
10888 #undef bfd_elf32_get_synthetic_symtab
10889
10890 #undef bfd_elf32_bfd_link_hash_table_create
10891 #define bfd_elf32_bfd_link_hash_table_create \
10892 ppc_elf_vxworks_link_hash_table_create
10893 #undef elf_backend_add_symbol_hook
10894 #define elf_backend_add_symbol_hook \
10895 ppc_elf_vxworks_add_symbol_hook
10896 #undef elf_backend_link_output_symbol_hook
10897 #define elf_backend_link_output_symbol_hook \
10898 elf_vxworks_link_output_symbol_hook
10899 #undef elf_backend_final_write_processing
10900 #define elf_backend_final_write_processing \
10901 ppc_elf_vxworks_final_write_processing
10902 #undef elf_backend_get_sec_type_attr
10903 #define elf_backend_get_sec_type_attr \
10904 ppc_elf_vxworks_get_sec_type_attr
10905 #undef elf_backend_emit_relocs
10906 #define elf_backend_emit_relocs \
10907 elf_vxworks_emit_relocs
10908
10909 #undef elf32_bed
10910 #define elf32_bed ppc_elf_vxworks_bed
10911 #undef elf_backend_post_process_headers
10912
10913 #include "elf32-target.h"
GDB Binutils - Deliverables
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