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PowerPC indirect calls to __tls_get_addr
[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.
3230 Bits are or'd into the mask as the corresponding relocs are
3231 encountered during check_relocs, with TLS_TLS being set when any
3232 of the other TLS bits are set. tls_optimize clears bits when
3233 optimizing to indicate the corresponding GOT entry type is not
3234 needed. If set, TLS_TLS is never cleared. tls_optimize may also
3235 set TLS_TPRELGD when a GD reloc turns into a TPREL one. We use a
3236 separate flag rather than setting TPREL just for convenience in
3237 distinguishing the two cases.
3238 These flags are also kept for local symbols. */
3239 #define TLS_TLS 1 /* Any TLS reloc. */
3240 #define TLS_GD 2 /* GD reloc. */
3241 #define TLS_LD 4 /* LD reloc. */
3242 #define TLS_TPREL 8 /* TPREL reloc, => IE. */
3243 #define TLS_DTPREL 16 /* DTPREL reloc, => LD. */
3244 #define TLS_MARK 32 /* __tls_get_addr call marked. */
3245 #define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */
3246 unsigned char tls_mask;
3247
3248 /* The above field is also used to mark function symbols. In which
3249 case TLS_TLS will be 0. */
3250 #define PLT_IFUNC 2 /* STT_GNU_IFUNC. */
3251 #define NON_GOT 256 /* local symbol plt, not stored. */
3252
3253 /* Nonzero if we have seen a small data relocation referring to this
3254 symbol. */
3255 unsigned char has_sda_refs : 1;
3256
3257 /* Flag use of given relocations. */
3258 unsigned char has_addr16_ha : 1;
3259 unsigned char has_addr16_lo : 1;
3260 };
3261
3262 #define ppc_elf_hash_entry(ent) ((struct ppc_elf_link_hash_entry *) (ent))
3263
3264 /* PPC ELF linker hash table. */
3265
3266 struct ppc_elf_link_hash_table
3267 {
3268 struct elf_link_hash_table elf;
3269
3270 /* Various options passed from the linker. */
3271 struct ppc_elf_params *params;
3272
3273 /* Short-cuts to get to dynamic linker sections. */
3274 asection *glink;
3275 asection *dynsbss;
3276 asection *relsbss;
3277 elf_linker_section_t sdata[2];
3278 asection *sbss;
3279 asection *glink_eh_frame;
3280
3281 /* The (unloaded but important) .rela.plt.unloaded on VxWorks. */
3282 asection *srelplt2;
3283
3284 /* Shortcut to __tls_get_addr. */
3285 struct elf_link_hash_entry *tls_get_addr;
3286
3287 /* The bfd that forced an old-style PLT. */
3288 bfd *old_bfd;
3289
3290 /* TLS local dynamic got entry handling. */
3291 union {
3292 bfd_signed_vma refcount;
3293 bfd_vma offset;
3294 } tlsld_got;
3295
3296 /* Offset of branch table to PltResolve function in glink. */
3297 bfd_vma glink_pltresolve;
3298
3299 /* Size of reserved GOT entries. */
3300 unsigned int got_header_size;
3301 /* Non-zero if allocating the header left a gap. */
3302 unsigned int got_gap;
3303
3304 /* The type of PLT we have chosen to use. */
3305 enum ppc_elf_plt_type plt_type;
3306
3307 /* True if the target system is VxWorks. */
3308 unsigned int is_vxworks:1;
3309
3310 /* Whether there exist local gnu indirect function resolvers,
3311 referenced by dynamic relocations. */
3312 unsigned int local_ifunc_resolver:1;
3313 unsigned int maybe_local_ifunc_resolver:1;
3314
3315 /* Set if tls optimization is enabled. */
3316 unsigned int do_tls_opt:1;
3317
3318 /* The size of PLT entries. */
3319 int plt_entry_size;
3320 /* The distance between adjacent PLT slots. */
3321 int plt_slot_size;
3322 /* The size of the first PLT entry. */
3323 int plt_initial_entry_size;
3324
3325 /* Small local sym cache. */
3326 struct sym_cache sym_cache;
3327 };
3328
3329 /* Rename some of the generic section flags to better document how they
3330 are used for ppc32. The flags are only valid for ppc32 elf objects. */
3331
3332 /* Nonzero if this section has TLS related relocations. */
3333 #define has_tls_reloc sec_flg0
3334
3335 /* Nonzero if this section has a call to __tls_get_addr. */
3336 #define has_tls_get_addr_call sec_flg1
3337
3338 /* Get the PPC ELF linker hash table from a link_info structure. */
3339
3340 #define ppc_elf_hash_table(p) \
3341 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
3342 == PPC32_ELF_DATA ? ((struct ppc_elf_link_hash_table *) ((p)->hash)) : NULL)
3343
3344 /* Create an entry in a PPC ELF linker hash table. */
3345
3346 static struct bfd_hash_entry *
3347 ppc_elf_link_hash_newfunc (struct bfd_hash_entry *entry,
3348 struct bfd_hash_table *table,
3349 const char *string)
3350 {
3351 /* Allocate the structure if it has not already been allocated by a
3352 subclass. */
3353 if (entry == NULL)
3354 {
3355 entry = bfd_hash_allocate (table,
3356 sizeof (struct ppc_elf_link_hash_entry));
3357 if (entry == NULL)
3358 return entry;
3359 }
3360
3361 /* Call the allocation method of the superclass. */
3362 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
3363 if (entry != NULL)
3364 {
3365 ppc_elf_hash_entry (entry)->linker_section_pointer = NULL;
3366 ppc_elf_hash_entry (entry)->dyn_relocs = NULL;
3367 ppc_elf_hash_entry (entry)->tls_mask = 0;
3368 ppc_elf_hash_entry (entry)->has_sda_refs = 0;
3369 }
3370
3371 return entry;
3372 }
3373
3374 /* Create a PPC ELF linker hash table. */
3375
3376 static struct bfd_link_hash_table *
3377 ppc_elf_link_hash_table_create (bfd *abfd)
3378 {
3379 struct ppc_elf_link_hash_table *ret;
3380 static struct ppc_elf_params default_params
3381 = { PLT_OLD, 0, 0, 1, 0, 0, 12, 0, 0, 0 };
3382
3383 ret = bfd_zmalloc (sizeof (struct ppc_elf_link_hash_table));
3384 if (ret == NULL)
3385 return NULL;
3386
3387 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd,
3388 ppc_elf_link_hash_newfunc,
3389 sizeof (struct ppc_elf_link_hash_entry),
3390 PPC32_ELF_DATA))
3391 {
3392 free (ret);
3393 return NULL;
3394 }
3395
3396 ret->elf.init_plt_refcount.refcount = 0;
3397 ret->elf.init_plt_refcount.glist = NULL;
3398 ret->elf.init_plt_offset.offset = 0;
3399 ret->elf.init_plt_offset.glist = NULL;
3400
3401 ret->params = &default_params;
3402
3403 ret->sdata[0].name = ".sdata";
3404 ret->sdata[0].sym_name = "_SDA_BASE_";
3405 ret->sdata[0].bss_name = ".sbss";
3406
3407 ret->sdata[1].name = ".sdata2";
3408 ret->sdata[1].sym_name = "_SDA2_BASE_";
3409 ret->sdata[1].bss_name = ".sbss2";
3410
3411 ret->plt_entry_size = 12;
3412 ret->plt_slot_size = 8;
3413 ret->plt_initial_entry_size = 72;
3414
3415 return &ret->elf.root;
3416 }
3417
3418 /* Hook linker params into hash table. */
3419
3420 void
3421 ppc_elf_link_params (struct bfd_link_info *info, struct ppc_elf_params *params)
3422 {
3423 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
3424
3425 if (htab)
3426 htab->params = params;
3427 params->pagesize_p2 = bfd_log2 (params->pagesize);
3428 }
3429
3430 /* Create .got and the related sections. */
3431
3432 static bfd_boolean
3433 ppc_elf_create_got (bfd *abfd, struct bfd_link_info *info)
3434 {
3435 struct ppc_elf_link_hash_table *htab;
3436
3437 if (!_bfd_elf_create_got_section (abfd, info))
3438 return FALSE;
3439
3440 htab = ppc_elf_hash_table (info);
3441 if (!htab->is_vxworks)
3442 {
3443 /* The powerpc .got has a blrl instruction in it. Mark it
3444 executable. */
3445 flagword flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS
3446 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3447 if (!bfd_set_section_flags (abfd, htab->elf.sgot, flags))
3448 return FALSE;
3449 }
3450
3451 return TRUE;
3452 }
3453
3454 /* Create a special linker section, used for R_PPC_EMB_SDAI16 and
3455 R_PPC_EMB_SDA2I16 pointers. These sections become part of .sdata
3456 and .sdata2. Create _SDA_BASE_ and _SDA2_BASE too. */
3457
3458 static bfd_boolean
3459 ppc_elf_create_linker_section (bfd *abfd,
3460 struct bfd_link_info *info,
3461 flagword flags,
3462 elf_linker_section_t *lsect)
3463 {
3464 asection *s;
3465
3466 flags |= (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
3467 | SEC_LINKER_CREATED);
3468
3469 s = bfd_make_section_anyway_with_flags (abfd, lsect->name, flags);
3470 if (s == NULL)
3471 return FALSE;
3472 lsect->section = s;
3473
3474 /* Define the sym on the first section of this name. */
3475 s = bfd_get_section_by_name (abfd, lsect->name);
3476
3477 lsect->sym = _bfd_elf_define_linkage_sym (abfd, info, s, lsect->sym_name);
3478 if (lsect->sym == NULL)
3479 return FALSE;
3480 lsect->sym->root.u.def.value = 0x8000;
3481 return TRUE;
3482 }
3483
3484 static bfd_boolean
3485 ppc_elf_create_glink (bfd *abfd, struct bfd_link_info *info)
3486 {
3487 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
3488 asection *s;
3489 flagword flags;
3490 int p2align;
3491
3492 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY | SEC_HAS_CONTENTS
3493 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3494 s = bfd_make_section_anyway_with_flags (abfd, ".glink", flags);
3495 htab->glink = s;
3496 p2align = htab->params->ppc476_workaround ? 6 : 4;
3497 if (p2align < htab->params->plt_stub_align)
3498 p2align = htab->params->plt_stub_align;
3499 if (s == NULL
3500 || !bfd_set_section_alignment (abfd, s, p2align))
3501 return FALSE;
3502
3503 if (!info->no_ld_generated_unwind_info)
3504 {
3505 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
3506 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3507 s = bfd_make_section_anyway_with_flags (abfd, ".eh_frame", flags);
3508 htab->glink_eh_frame = s;
3509 if (s == NULL
3510 || !bfd_set_section_alignment (abfd, s, 2))
3511 return FALSE;
3512 }
3513
3514 flags = SEC_ALLOC | SEC_LINKER_CREATED;
3515 s = bfd_make_section_anyway_with_flags (abfd, ".iplt", flags);
3516 htab->elf.iplt = s;
3517 if (s == NULL
3518 || !bfd_set_section_alignment (abfd, s, 4))
3519 return FALSE;
3520
3521 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
3522 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3523 s = bfd_make_section_anyway_with_flags (abfd, ".rela.iplt", flags);
3524 htab->elf.irelplt = s;
3525 if (s == NULL
3526 || ! bfd_set_section_alignment (abfd, s, 2))
3527 return FALSE;
3528
3529 if (!ppc_elf_create_linker_section (abfd, info, 0,
3530 &htab->sdata[0]))
3531 return FALSE;
3532
3533 if (!ppc_elf_create_linker_section (abfd, info, SEC_READONLY,
3534 &htab->sdata[1]))
3535 return FALSE;
3536
3537 return TRUE;
3538 }
3539
3540 /* We have to create .dynsbss and .rela.sbss here so that they get mapped
3541 to output sections (just like _bfd_elf_create_dynamic_sections has
3542 to create .dynbss and .rela.bss). */
3543
3544 static bfd_boolean
3545 ppc_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
3546 {
3547 struct ppc_elf_link_hash_table *htab;
3548 asection *s;
3549 flagword flags;
3550
3551 htab = ppc_elf_hash_table (info);
3552
3553 if (htab->elf.sgot == NULL
3554 && !ppc_elf_create_got (abfd, info))
3555 return FALSE;
3556
3557 if (!_bfd_elf_create_dynamic_sections (abfd, info))
3558 return FALSE;
3559
3560 if (htab->glink == NULL
3561 && !ppc_elf_create_glink (abfd, info))
3562 return FALSE;
3563
3564 s = bfd_make_section_anyway_with_flags (abfd, ".dynsbss",
3565 SEC_ALLOC | SEC_LINKER_CREATED);
3566 htab->dynsbss = s;
3567 if (s == NULL)
3568 return FALSE;
3569
3570 if (! bfd_link_pic (info))
3571 {
3572 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
3573 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3574 s = bfd_make_section_anyway_with_flags (abfd, ".rela.sbss", flags);
3575 htab->relsbss = s;
3576 if (s == NULL
3577 || ! bfd_set_section_alignment (abfd, s, 2))
3578 return FALSE;
3579 }
3580
3581 if (htab->is_vxworks
3582 && !elf_vxworks_create_dynamic_sections (abfd, info, &htab->srelplt2))
3583 return FALSE;
3584
3585 s = htab->elf.splt;
3586 flags = SEC_ALLOC | SEC_CODE | SEC_LINKER_CREATED;
3587 if (htab->plt_type == PLT_VXWORKS)
3588 /* The VxWorks PLT is a loaded section with contents. */
3589 flags |= SEC_HAS_CONTENTS | SEC_LOAD | SEC_READONLY;
3590 return bfd_set_section_flags (abfd, s, flags);
3591 }
3592
3593 /* Copy the extra info we tack onto an elf_link_hash_entry. */
3594
3595 static void
3596 ppc_elf_copy_indirect_symbol (struct bfd_link_info *info,
3597 struct elf_link_hash_entry *dir,
3598 struct elf_link_hash_entry *ind)
3599 {
3600 struct ppc_elf_link_hash_entry *edir, *eind;
3601
3602 edir = (struct ppc_elf_link_hash_entry *) dir;
3603 eind = (struct ppc_elf_link_hash_entry *) ind;
3604
3605 edir->tls_mask |= eind->tls_mask;
3606 edir->has_sda_refs |= eind->has_sda_refs;
3607
3608 if (edir->elf.versioned != versioned_hidden)
3609 edir->elf.ref_dynamic |= eind->elf.ref_dynamic;
3610 edir->elf.ref_regular |= eind->elf.ref_regular;
3611 edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak;
3612 edir->elf.non_got_ref |= eind->elf.non_got_ref;
3613 edir->elf.needs_plt |= eind->elf.needs_plt;
3614 edir->elf.pointer_equality_needed |= eind->elf.pointer_equality_needed;
3615
3616 /* If we were called to copy over info for a weak sym, that's all. */
3617 if (eind->elf.root.type != bfd_link_hash_indirect)
3618 return;
3619
3620 if (eind->dyn_relocs != NULL)
3621 {
3622 if (edir->dyn_relocs != NULL)
3623 {
3624 struct elf_dyn_relocs **pp;
3625 struct elf_dyn_relocs *p;
3626
3627 /* Add reloc counts against the indirect sym to the direct sym
3628 list. Merge any entries against the same section. */
3629 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
3630 {
3631 struct elf_dyn_relocs *q;
3632
3633 for (q = edir->dyn_relocs; q != NULL; q = q->next)
3634 if (q->sec == p->sec)
3635 {
3636 q->pc_count += p->pc_count;
3637 q->count += p->count;
3638 *pp = p->next;
3639 break;
3640 }
3641 if (q == NULL)
3642 pp = &p->next;
3643 }
3644 *pp = edir->dyn_relocs;
3645 }
3646
3647 edir->dyn_relocs = eind->dyn_relocs;
3648 eind->dyn_relocs = NULL;
3649 }
3650
3651 /* Copy over the GOT refcount entries that we may have already seen to
3652 the symbol which just became indirect. */
3653 edir->elf.got.refcount += eind->elf.got.refcount;
3654 eind->elf.got.refcount = 0;
3655
3656 /* And plt entries. */
3657 if (eind->elf.plt.plist != NULL)
3658 {
3659 if (edir->elf.plt.plist != NULL)
3660 {
3661 struct plt_entry **entp;
3662 struct plt_entry *ent;
3663
3664 for (entp = &eind->elf.plt.plist; (ent = *entp) != NULL; )
3665 {
3666 struct plt_entry *dent;
3667
3668 for (dent = edir->elf.plt.plist; dent != NULL; dent = dent->next)
3669 if (dent->sec == ent->sec && dent->addend == ent->addend)
3670 {
3671 dent->plt.refcount += ent->plt.refcount;
3672 *entp = ent->next;
3673 break;
3674 }
3675 if (dent == NULL)
3676 entp = &ent->next;
3677 }
3678 *entp = edir->elf.plt.plist;
3679 }
3680
3681 edir->elf.plt.plist = eind->elf.plt.plist;
3682 eind->elf.plt.plist = NULL;
3683 }
3684
3685 if (eind->elf.dynindx != -1)
3686 {
3687 if (edir->elf.dynindx != -1)
3688 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
3689 edir->elf.dynstr_index);
3690 edir->elf.dynindx = eind->elf.dynindx;
3691 edir->elf.dynstr_index = eind->elf.dynstr_index;
3692 eind->elf.dynindx = -1;
3693 eind->elf.dynstr_index = 0;
3694 }
3695 }
3696
3697 /* Hook called by the linker routine which adds symbols from an object
3698 file. We use it to put .comm items in .sbss, and not .bss. */
3699
3700 static bfd_boolean
3701 ppc_elf_add_symbol_hook (bfd *abfd,
3702 struct bfd_link_info *info,
3703 Elf_Internal_Sym *sym,
3704 const char **namep ATTRIBUTE_UNUSED,
3705 flagword *flagsp ATTRIBUTE_UNUSED,
3706 asection **secp,
3707 bfd_vma *valp)
3708 {
3709 if (sym->st_shndx == SHN_COMMON
3710 && !bfd_link_relocatable (info)
3711 && is_ppc_elf (info->output_bfd)
3712 && sym->st_size <= elf_gp_size (abfd))
3713 {
3714 /* Common symbols less than or equal to -G nn bytes are automatically
3715 put into .sbss. */
3716 struct ppc_elf_link_hash_table *htab;
3717
3718 htab = ppc_elf_hash_table (info);
3719 if (htab->sbss == NULL)
3720 {
3721 flagword flags = SEC_IS_COMMON | SEC_LINKER_CREATED;
3722
3723 if (!htab->elf.dynobj)
3724 htab->elf.dynobj = abfd;
3725
3726 htab->sbss = bfd_make_section_anyway_with_flags (htab->elf.dynobj,
3727 ".sbss",
3728 flags);
3729 if (htab->sbss == NULL)
3730 return FALSE;
3731 }
3732
3733 *secp = htab->sbss;
3734 *valp = sym->st_size;
3735 }
3736
3737 if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC
3738 && (abfd->flags & DYNAMIC) == 0
3739 && bfd_get_flavour (info->output_bfd) == bfd_target_elf_flavour)
3740 elf_tdata (info->output_bfd)->has_gnu_symbols |= elf_gnu_symbol_ifunc;
3741
3742 return TRUE;
3743 }
3744 \f
3745 /* Find a linker generated pointer with a given addend and type. */
3746
3747 static elf_linker_section_pointers_t *
3748 elf_find_pointer_linker_section
3749 (elf_linker_section_pointers_t *linker_pointers,
3750 bfd_vma addend,
3751 elf_linker_section_t *lsect)
3752 {
3753 for ( ; linker_pointers != NULL; linker_pointers = linker_pointers->next)
3754 if (lsect == linker_pointers->lsect && addend == linker_pointers->addend)
3755 return linker_pointers;
3756
3757 return NULL;
3758 }
3759
3760 /* Allocate a pointer to live in a linker created section. */
3761
3762 static bfd_boolean
3763 elf_allocate_pointer_linker_section (bfd *abfd,
3764 elf_linker_section_t *lsect,
3765 struct elf_link_hash_entry *h,
3766 const Elf_Internal_Rela *rel)
3767 {
3768 elf_linker_section_pointers_t **ptr_linker_section_ptr = NULL;
3769 elf_linker_section_pointers_t *linker_section_ptr;
3770 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
3771 bfd_size_type amt;
3772
3773 BFD_ASSERT (lsect != NULL);
3774
3775 /* Is this a global symbol? */
3776 if (h != NULL)
3777 {
3778 struct ppc_elf_link_hash_entry *eh;
3779
3780 /* Has this symbol already been allocated? If so, our work is done. */
3781 eh = (struct ppc_elf_link_hash_entry *) h;
3782 if (elf_find_pointer_linker_section (eh->linker_section_pointer,
3783 rel->r_addend,
3784 lsect))
3785 return TRUE;
3786
3787 ptr_linker_section_ptr = &eh->linker_section_pointer;
3788 }
3789 else
3790 {
3791 BFD_ASSERT (is_ppc_elf (abfd));
3792
3793 /* Allocation of a pointer to a local symbol. */
3794 elf_linker_section_pointers_t **ptr = elf_local_ptr_offsets (abfd);
3795
3796 /* Allocate a table to hold the local symbols if first time. */
3797 if (!ptr)
3798 {
3799 unsigned int num_symbols = elf_symtab_hdr (abfd).sh_info;
3800
3801 amt = num_symbols;
3802 amt *= sizeof (elf_linker_section_pointers_t *);
3803 ptr = bfd_zalloc (abfd, amt);
3804
3805 if (!ptr)
3806 return FALSE;
3807
3808 elf_local_ptr_offsets (abfd) = ptr;
3809 }
3810
3811 /* Has this symbol already been allocated? If so, our work is done. */
3812 if (elf_find_pointer_linker_section (ptr[r_symndx],
3813 rel->r_addend,
3814 lsect))
3815 return TRUE;
3816
3817 ptr_linker_section_ptr = &ptr[r_symndx];
3818 }
3819
3820 /* Allocate space for a pointer in the linker section, and allocate
3821 a new pointer record from internal memory. */
3822 BFD_ASSERT (ptr_linker_section_ptr != NULL);
3823 amt = sizeof (elf_linker_section_pointers_t);
3824 linker_section_ptr = bfd_alloc (abfd, amt);
3825
3826 if (!linker_section_ptr)
3827 return FALSE;
3828
3829 linker_section_ptr->next = *ptr_linker_section_ptr;
3830 linker_section_ptr->addend = rel->r_addend;
3831 linker_section_ptr->lsect = lsect;
3832 *ptr_linker_section_ptr = linker_section_ptr;
3833
3834 if (!bfd_set_section_alignment (lsect->section->owner, lsect->section, 2))
3835 return FALSE;
3836 linker_section_ptr->offset = lsect->section->size;
3837 lsect->section->size += 4;
3838
3839 #ifdef DEBUG
3840 fprintf (stderr,
3841 "Create pointer in linker section %s, offset = %ld, section size = %ld\n",
3842 lsect->name, (long) linker_section_ptr->offset,
3843 (long) lsect->section->size);
3844 #endif
3845
3846 return TRUE;
3847 }
3848
3849 static struct plt_entry **
3850 update_local_sym_info (bfd *abfd,
3851 Elf_Internal_Shdr *symtab_hdr,
3852 unsigned long r_symndx,
3853 int tls_type)
3854 {
3855 bfd_signed_vma *local_got_refcounts = elf_local_got_refcounts (abfd);
3856 struct plt_entry **local_plt;
3857 unsigned char *local_got_tls_masks;
3858
3859 if (local_got_refcounts == NULL)
3860 {
3861 bfd_size_type size = symtab_hdr->sh_info;
3862
3863 size *= (sizeof (*local_got_refcounts)
3864 + sizeof (*local_plt)
3865 + sizeof (*local_got_tls_masks));
3866 local_got_refcounts = bfd_zalloc (abfd, size);
3867 if (local_got_refcounts == NULL)
3868 return NULL;
3869 elf_local_got_refcounts (abfd) = local_got_refcounts;
3870 }
3871
3872 local_plt = (struct plt_entry **) (local_got_refcounts + symtab_hdr->sh_info);
3873 local_got_tls_masks = (unsigned char *) (local_plt + symtab_hdr->sh_info);
3874 local_got_tls_masks[r_symndx] |= tls_type & 0xff;
3875 if ((tls_type & NON_GOT) == 0)
3876 local_got_refcounts[r_symndx] += 1;
3877 return local_plt + r_symndx;
3878 }
3879
3880 static bfd_boolean
3881 update_plt_info (bfd *abfd, struct plt_entry **plist,
3882 asection *sec, bfd_vma addend)
3883 {
3884 struct plt_entry *ent;
3885
3886 if (addend < 32768)
3887 sec = NULL;
3888 for (ent = *plist; ent != NULL; ent = ent->next)
3889 if (ent->sec == sec && ent->addend == addend)
3890 break;
3891 if (ent == NULL)
3892 {
3893 bfd_size_type amt = sizeof (*ent);
3894 ent = bfd_alloc (abfd, amt);
3895 if (ent == NULL)
3896 return FALSE;
3897 ent->next = *plist;
3898 ent->sec = sec;
3899 ent->addend = addend;
3900 ent->plt.refcount = 0;
3901 *plist = ent;
3902 }
3903 ent->plt.refcount += 1;
3904 return TRUE;
3905 }
3906
3907 static struct plt_entry *
3908 find_plt_ent (struct plt_entry **plist, asection *sec, bfd_vma addend)
3909 {
3910 struct plt_entry *ent;
3911
3912 if (addend < 32768)
3913 sec = NULL;
3914 for (ent = *plist; ent != NULL; ent = ent->next)
3915 if (ent->sec == sec && ent->addend == addend)
3916 break;
3917 return ent;
3918 }
3919
3920 static bfd_boolean
3921 is_branch_reloc (enum elf_ppc_reloc_type r_type)
3922 {
3923 return (r_type == R_PPC_PLTREL24
3924 || r_type == R_PPC_LOCAL24PC
3925 || r_type == R_PPC_REL24
3926 || r_type == R_PPC_REL14
3927 || r_type == R_PPC_REL14_BRTAKEN
3928 || r_type == R_PPC_REL14_BRNTAKEN
3929 || r_type == R_PPC_ADDR24
3930 || r_type == R_PPC_ADDR14
3931 || r_type == R_PPC_ADDR14_BRTAKEN
3932 || r_type == R_PPC_ADDR14_BRNTAKEN
3933 || r_type == R_PPC_VLE_REL24);
3934 }
3935
3936 static void
3937 bad_shared_reloc (bfd *abfd, enum elf_ppc_reloc_type r_type)
3938 {
3939 _bfd_error_handler
3940 /* xgettext:c-format */
3941 (_("%pB: relocation %s cannot be used when making a shared object"),
3942 abfd,
3943 ppc_elf_howto_table[r_type]->name);
3944 bfd_set_error (bfd_error_bad_value);
3945 }
3946
3947 /* Look through the relocs for a section during the first phase, and
3948 allocate space in the global offset table or procedure linkage
3949 table. */
3950
3951 static bfd_boolean
3952 ppc_elf_check_relocs (bfd *abfd,
3953 struct bfd_link_info *info,
3954 asection *sec,
3955 const Elf_Internal_Rela *relocs)
3956 {
3957 struct ppc_elf_link_hash_table *htab;
3958 Elf_Internal_Shdr *symtab_hdr;
3959 struct elf_link_hash_entry **sym_hashes;
3960 const Elf_Internal_Rela *rel;
3961 const Elf_Internal_Rela *rel_end;
3962 asection *got2, *sreloc;
3963 struct elf_link_hash_entry *tga;
3964
3965 if (bfd_link_relocatable (info))
3966 return TRUE;
3967
3968 /* Don't do anything special with non-loaded, non-alloced sections.
3969 In particular, any relocs in such sections should not affect GOT
3970 and PLT reference counting (ie. we don't allow them to create GOT
3971 or PLT entries), there's no possibility or desire to optimize TLS
3972 relocs, and there's not much point in propagating relocs to shared
3973 libs that the dynamic linker won't relocate. */
3974 if ((sec->flags & SEC_ALLOC) == 0)
3975 return TRUE;
3976
3977 #ifdef DEBUG
3978 _bfd_error_handler ("ppc_elf_check_relocs called for section %pA in %pB",
3979 sec, abfd);
3980 #endif
3981
3982 BFD_ASSERT (is_ppc_elf (abfd));
3983
3984 /* Initialize howto table if not already done. */
3985 if (!ppc_elf_howto_table[R_PPC_ADDR32])
3986 ppc_elf_howto_init ();
3987
3988 htab = ppc_elf_hash_table (info);
3989 if (htab->glink == NULL)
3990 {
3991 if (htab->elf.dynobj == NULL)
3992 htab->elf.dynobj = abfd;
3993 if (!ppc_elf_create_glink (htab->elf.dynobj, info))
3994 return FALSE;
3995 }
3996 tga = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
3997 FALSE, FALSE, TRUE);
3998 symtab_hdr = &elf_symtab_hdr (abfd);
3999 sym_hashes = elf_sym_hashes (abfd);
4000 got2 = bfd_get_section_by_name (abfd, ".got2");
4001 sreloc = NULL;
4002
4003 rel_end = relocs + sec->reloc_count;
4004 for (rel = relocs; rel < rel_end; rel++)
4005 {
4006 unsigned long r_symndx;
4007 enum elf_ppc_reloc_type r_type;
4008 struct elf_link_hash_entry *h;
4009 int tls_type;
4010 struct plt_entry **ifunc;
4011
4012 r_symndx = ELF32_R_SYM (rel->r_info);
4013 if (r_symndx < symtab_hdr->sh_info)
4014 h = NULL;
4015 else
4016 {
4017 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4018 while (h->root.type == bfd_link_hash_indirect
4019 || h->root.type == bfd_link_hash_warning)
4020 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4021 }
4022
4023 /* If a relocation refers to _GLOBAL_OFFSET_TABLE_, create the .got.
4024 This shows up in particular in an R_PPC_ADDR32 in the eabi
4025 startup code. */
4026 if (h != NULL
4027 && htab->elf.sgot == NULL
4028 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
4029 {
4030 if (htab->elf.dynobj == NULL)
4031 htab->elf.dynobj = abfd;
4032 if (!ppc_elf_create_got (htab->elf.dynobj, info))
4033 return FALSE;
4034 BFD_ASSERT (h == htab->elf.hgot);
4035 }
4036
4037 tls_type = 0;
4038 r_type = ELF32_R_TYPE (rel->r_info);
4039 ifunc = NULL;
4040 if (h == NULL && !htab->is_vxworks)
4041 {
4042 Elf_Internal_Sym *isym = bfd_sym_from_r_symndx (&htab->sym_cache,
4043 abfd, r_symndx);
4044 if (isym == NULL)
4045 return FALSE;
4046
4047 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
4048 {
4049 /* Set PLT_IFUNC flag for this sym, no GOT entry yet. */
4050 ifunc = update_local_sym_info (abfd, symtab_hdr, r_symndx,
4051 NON_GOT | PLT_IFUNC);
4052 if (ifunc == NULL)
4053 return FALSE;
4054
4055 /* STT_GNU_IFUNC symbols must have a PLT entry;
4056 In a non-pie executable even when there are
4057 no plt calls. */
4058 if (!bfd_link_pic (info)
4059 || is_branch_reloc (r_type))
4060 {
4061 bfd_vma addend = 0;
4062 if (r_type == R_PPC_PLTREL24)
4063 {
4064 ppc_elf_tdata (abfd)->makes_plt_call = 1;
4065 if (bfd_link_pic (info))
4066 addend = rel->r_addend;
4067 }
4068 if (!update_plt_info (abfd, ifunc, got2, addend))
4069 return FALSE;
4070 }
4071 }
4072 }
4073
4074 if (!htab->is_vxworks
4075 && is_branch_reloc (r_type)
4076 && h != NULL
4077 && h == tga)
4078 {
4079 if (rel != relocs
4080 && (ELF32_R_TYPE (rel[-1].r_info) == R_PPC_TLSGD
4081 || ELF32_R_TYPE (rel[-1].r_info) == R_PPC_TLSLD))
4082 /* We have a new-style __tls_get_addr call with a marker
4083 reloc. */
4084 ;
4085 else
4086 /* Mark this section as having an old-style call. */
4087 sec->has_tls_get_addr_call = 1;
4088 }
4089
4090 switch (r_type)
4091 {
4092 case R_PPC_TLSGD:
4093 case R_PPC_TLSLD:
4094 /* These special tls relocs tie a call to __tls_get_addr with
4095 its parameter symbol. */
4096 if (h != NULL)
4097 ppc_elf_hash_entry (h)->tls_mask |= TLS_TLS | TLS_MARK;
4098 else
4099 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
4100 NON_GOT | TLS_TLS | TLS_MARK))
4101 return FALSE;
4102 break;
4103
4104 case R_PPC_GOT_TLSLD16:
4105 case R_PPC_GOT_TLSLD16_LO:
4106 case R_PPC_GOT_TLSLD16_HI:
4107 case R_PPC_GOT_TLSLD16_HA:
4108 tls_type = TLS_TLS | TLS_LD;
4109 goto dogottls;
4110
4111 case R_PPC_GOT_TLSGD16:
4112 case R_PPC_GOT_TLSGD16_LO:
4113 case R_PPC_GOT_TLSGD16_HI:
4114 case R_PPC_GOT_TLSGD16_HA:
4115 tls_type = TLS_TLS | TLS_GD;
4116 goto dogottls;
4117
4118 case R_PPC_GOT_TPREL16:
4119 case R_PPC_GOT_TPREL16_LO:
4120 case R_PPC_GOT_TPREL16_HI:
4121 case R_PPC_GOT_TPREL16_HA:
4122 if (bfd_link_dll (info))
4123 info->flags |= DF_STATIC_TLS;
4124 tls_type = TLS_TLS | TLS_TPREL;
4125 goto dogottls;
4126
4127 case R_PPC_GOT_DTPREL16:
4128 case R_PPC_GOT_DTPREL16_LO:
4129 case R_PPC_GOT_DTPREL16_HI:
4130 case R_PPC_GOT_DTPREL16_HA:
4131 tls_type = TLS_TLS | TLS_DTPREL;
4132 dogottls:
4133 sec->has_tls_reloc = 1;
4134 /* Fall through. */
4135
4136 /* GOT16 relocations */
4137 case R_PPC_GOT16:
4138 case R_PPC_GOT16_LO:
4139 case R_PPC_GOT16_HI:
4140 case R_PPC_GOT16_HA:
4141 /* This symbol requires a global offset table entry. */
4142 if (htab->elf.sgot == NULL)
4143 {
4144 if (htab->elf.dynobj == NULL)
4145 htab->elf.dynobj = abfd;
4146 if (!ppc_elf_create_got (htab->elf.dynobj, info))
4147 return FALSE;
4148 }
4149 if (h != NULL)
4150 {
4151 h->got.refcount += 1;
4152 ppc_elf_hash_entry (h)->tls_mask |= tls_type;
4153 }
4154 else
4155 /* This is a global offset table entry for a local symbol. */
4156 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, tls_type))
4157 return FALSE;
4158
4159 /* We may also need a plt entry if the symbol turns out to be
4160 an ifunc. */
4161 if (h != NULL && !bfd_link_pic (info))
4162 {
4163 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
4164 return FALSE;
4165 }
4166 break;
4167
4168 /* Indirect .sdata relocation. */
4169 case R_PPC_EMB_SDAI16:
4170 if (bfd_link_pic (info))
4171 {
4172 bad_shared_reloc (abfd, r_type);
4173 return FALSE;
4174 }
4175 htab->sdata[0].sym->ref_regular = 1;
4176 if (!elf_allocate_pointer_linker_section (abfd, &htab->sdata[0],
4177 h, rel))
4178 return FALSE;
4179 if (h != NULL)
4180 {
4181 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4182 h->non_got_ref = TRUE;
4183 }
4184 break;
4185
4186 /* Indirect .sdata2 relocation. */
4187 case R_PPC_EMB_SDA2I16:
4188 if (bfd_link_pic (info))
4189 {
4190 bad_shared_reloc (abfd, r_type);
4191 return FALSE;
4192 }
4193 htab->sdata[1].sym->ref_regular = 1;
4194 if (!elf_allocate_pointer_linker_section (abfd, &htab->sdata[1],
4195 h, rel))
4196 return FALSE;
4197 if (h != NULL)
4198 {
4199 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4200 h->non_got_ref = TRUE;
4201 }
4202 break;
4203
4204 case R_PPC_SDAREL16:
4205 htab->sdata[0].sym->ref_regular = 1;
4206 /* Fall through. */
4207
4208 case R_PPC_VLE_SDAREL_LO16A:
4209 case R_PPC_VLE_SDAREL_LO16D:
4210 case R_PPC_VLE_SDAREL_HI16A:
4211 case R_PPC_VLE_SDAREL_HI16D:
4212 case R_PPC_VLE_SDAREL_HA16A:
4213 case R_PPC_VLE_SDAREL_HA16D:
4214 if (h != NULL)
4215 {
4216 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4217 h->non_got_ref = TRUE;
4218 }
4219 break;
4220
4221 case R_PPC_VLE_REL8:
4222 case R_PPC_VLE_REL15:
4223 case R_PPC_VLE_REL24:
4224 case R_PPC_VLE_LO16A:
4225 case R_PPC_VLE_LO16D:
4226 case R_PPC_VLE_HI16A:
4227 case R_PPC_VLE_HI16D:
4228 case R_PPC_VLE_HA16A:
4229 case R_PPC_VLE_HA16D:
4230 case R_PPC_VLE_ADDR20:
4231 break;
4232
4233 case R_PPC_EMB_SDA2REL:
4234 if (bfd_link_pic (info))
4235 {
4236 bad_shared_reloc (abfd, r_type);
4237 return FALSE;
4238 }
4239 htab->sdata[1].sym->ref_regular = 1;
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_VLE_SDA21_LO:
4248 case R_PPC_VLE_SDA21:
4249 case R_PPC_EMB_SDA21:
4250 case R_PPC_EMB_RELSDA:
4251 if (bfd_link_pic (info))
4252 {
4253 bad_shared_reloc (abfd, r_type);
4254 return FALSE;
4255 }
4256 if (h != NULL)
4257 {
4258 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4259 h->non_got_ref = TRUE;
4260 }
4261 break;
4262
4263 case R_PPC_EMB_NADDR32:
4264 case R_PPC_EMB_NADDR16:
4265 case R_PPC_EMB_NADDR16_LO:
4266 case R_PPC_EMB_NADDR16_HI:
4267 case R_PPC_EMB_NADDR16_HA:
4268 if (bfd_link_pic (info))
4269 {
4270 bad_shared_reloc (abfd, r_type);
4271 return FALSE;
4272 }
4273 if (h != NULL)
4274 h->non_got_ref = TRUE;
4275 break;
4276
4277 case R_PPC_PLTREL24:
4278 if (h == NULL)
4279 break;
4280 /* Fall through */
4281 case R_PPC_PLT32:
4282 case R_PPC_PLTREL32:
4283 case R_PPC_PLT16_LO:
4284 case R_PPC_PLT16_HI:
4285 case R_PPC_PLT16_HA:
4286 #ifdef DEBUG
4287 fprintf (stderr, "Reloc requires a PLT entry\n");
4288 #endif
4289 /* This symbol requires a procedure linkage table entry. */
4290 if (h == NULL)
4291 {
4292 if (ifunc == NULL)
4293 {
4294 /* It does not make sense to have a procedure linkage
4295 table entry for a non-ifunc local symbol. */
4296 info->callbacks->einfo
4297 /* xgettext:c-format */
4298 (_("%H: %s reloc against local symbol\n"),
4299 abfd, sec, rel->r_offset,
4300 ppc_elf_howto_table[r_type]->name);
4301 bfd_set_error (bfd_error_bad_value);
4302 return FALSE;
4303 }
4304 }
4305 else
4306 {
4307 bfd_vma addend = 0;
4308
4309 if (r_type == R_PPC_PLTREL24)
4310 {
4311 ppc_elf_tdata (abfd)->makes_plt_call = 1;
4312 if (bfd_link_pic (info))
4313 addend = rel->r_addend;
4314 }
4315 h->needs_plt = 1;
4316 if (!update_plt_info (abfd, &h->plt.plist, got2, addend))
4317 return FALSE;
4318 }
4319 break;
4320
4321 /* The following relocations don't need to propagate the
4322 relocation if linking a shared object since they are
4323 section relative. */
4324 case R_PPC_SECTOFF:
4325 case R_PPC_SECTOFF_LO:
4326 case R_PPC_SECTOFF_HI:
4327 case R_PPC_SECTOFF_HA:
4328 case R_PPC_DTPREL16:
4329 case R_PPC_DTPREL16_LO:
4330 case R_PPC_DTPREL16_HI:
4331 case R_PPC_DTPREL16_HA:
4332 case R_PPC_TOC16:
4333 break;
4334
4335 case R_PPC_REL16:
4336 case R_PPC_REL16_LO:
4337 case R_PPC_REL16_HI:
4338 case R_PPC_REL16_HA:
4339 case R_PPC_REL16DX_HA:
4340 ppc_elf_tdata (abfd)->has_rel16 = 1;
4341 break;
4342
4343 /* These are just markers. */
4344 case R_PPC_TLS:
4345 case R_PPC_EMB_MRKREF:
4346 case R_PPC_NONE:
4347 case R_PPC_max:
4348 case R_PPC_RELAX:
4349 case R_PPC_RELAX_PLT:
4350 case R_PPC_RELAX_PLTREL24:
4351 case R_PPC_16DX_HA:
4352 break;
4353
4354 /* These should only appear in dynamic objects. */
4355 case R_PPC_COPY:
4356 case R_PPC_GLOB_DAT:
4357 case R_PPC_JMP_SLOT:
4358 case R_PPC_RELATIVE:
4359 case R_PPC_IRELATIVE:
4360 break;
4361
4362 /* These aren't handled yet. We'll report an error later. */
4363 case R_PPC_ADDR30:
4364 case R_PPC_EMB_RELSEC16:
4365 case R_PPC_EMB_RELST_LO:
4366 case R_PPC_EMB_RELST_HI:
4367 case R_PPC_EMB_RELST_HA:
4368 case R_PPC_EMB_BIT_FLD:
4369 break;
4370
4371 /* This refers only to functions defined in the shared library. */
4372 case R_PPC_LOCAL24PC:
4373 if (h != NULL && h == htab->elf.hgot && htab->plt_type == PLT_UNSET)
4374 {
4375 htab->plt_type = PLT_OLD;
4376 htab->old_bfd = abfd;
4377 }
4378 if (h != NULL && h->type == STT_GNU_IFUNC)
4379 {
4380 h->needs_plt = 1;
4381 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
4382 return FALSE;
4383 }
4384 break;
4385
4386 /* This relocation describes the C++ object vtable hierarchy.
4387 Reconstruct it for later use during GC. */
4388 case R_PPC_GNU_VTINHERIT:
4389 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
4390 return FALSE;
4391 break;
4392
4393 /* This relocation describes which C++ vtable entries are actually
4394 used. Record for later use during GC. */
4395 case R_PPC_GNU_VTENTRY:
4396 BFD_ASSERT (h != NULL);
4397 if (h != NULL
4398 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
4399 return FALSE;
4400 break;
4401
4402 /* We shouldn't really be seeing TPREL32. */
4403 case R_PPC_TPREL32:
4404 case R_PPC_TPREL16:
4405 case R_PPC_TPREL16_LO:
4406 case R_PPC_TPREL16_HI:
4407 case R_PPC_TPREL16_HA:
4408 if (bfd_link_dll (info))
4409 info->flags |= DF_STATIC_TLS;
4410 goto dodyn;
4411
4412 /* Nor these. */
4413 case R_PPC_DTPMOD32:
4414 case R_PPC_DTPREL32:
4415 goto dodyn;
4416
4417 case R_PPC_REL32:
4418 if (h == NULL
4419 && got2 != NULL
4420 && (sec->flags & SEC_CODE) != 0
4421 && bfd_link_pic (info)
4422 && htab->plt_type == PLT_UNSET)
4423 {
4424 /* Old -fPIC gcc code has .long LCTOC1-LCFx just before
4425 the start of a function, which assembles to a REL32
4426 reference to .got2. If we detect one of these, then
4427 force the old PLT layout because the linker cannot
4428 reliably deduce the GOT pointer value needed for
4429 PLT call stubs. */
4430 asection *s;
4431 Elf_Internal_Sym *isym;
4432
4433 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
4434 abfd, r_symndx);
4435 if (isym == NULL)
4436 return FALSE;
4437
4438 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
4439 if (s == got2)
4440 {
4441 htab->plt_type = PLT_OLD;
4442 htab->old_bfd = abfd;
4443 }
4444 }
4445 if (h == NULL || h == htab->elf.hgot)
4446 break;
4447 /* fall through */
4448
4449 case R_PPC_ADDR32:
4450 case R_PPC_ADDR16:
4451 case R_PPC_ADDR16_LO:
4452 case R_PPC_ADDR16_HI:
4453 case R_PPC_ADDR16_HA:
4454 case R_PPC_UADDR32:
4455 case R_PPC_UADDR16:
4456 if (h != NULL && !bfd_link_pic (info))
4457 {
4458 /* We may need a plt entry if the symbol turns out to be
4459 a function defined in a dynamic object. */
4460 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
4461 return FALSE;
4462
4463 /* We may need a copy reloc too. */
4464 h->non_got_ref = 1;
4465 h->pointer_equality_needed = 1;
4466 if (r_type == R_PPC_ADDR16_HA)
4467 ppc_elf_hash_entry (h)->has_addr16_ha = 1;
4468 if (r_type == R_PPC_ADDR16_LO)
4469 ppc_elf_hash_entry (h)->has_addr16_lo = 1;
4470 }
4471 goto dodyn;
4472
4473 case R_PPC_REL24:
4474 case R_PPC_REL14:
4475 case R_PPC_REL14_BRTAKEN:
4476 case R_PPC_REL14_BRNTAKEN:
4477 if (h == NULL)
4478 break;
4479 if (h == htab->elf.hgot)
4480 {
4481 if (htab->plt_type == PLT_UNSET)
4482 {
4483 htab->plt_type = PLT_OLD;
4484 htab->old_bfd = abfd;
4485 }
4486 break;
4487 }
4488 /* fall through */
4489
4490 case R_PPC_ADDR24:
4491 case R_PPC_ADDR14:
4492 case R_PPC_ADDR14_BRTAKEN:
4493 case R_PPC_ADDR14_BRNTAKEN:
4494 if (h != NULL && !bfd_link_pic (info))
4495 {
4496 /* We may need a plt entry if the symbol turns out to be
4497 a function defined in a dynamic object. */
4498 h->needs_plt = 1;
4499 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
4500 return FALSE;
4501 break;
4502 }
4503
4504 dodyn:
4505 /* If we are creating a shared library, and this is a reloc
4506 against a global symbol, or a non PC relative reloc
4507 against a local symbol, then we need to copy the reloc
4508 into the shared library. However, if we are linking with
4509 -Bsymbolic, we do not need to copy a reloc against a
4510 global symbol which is defined in an object we are
4511 including in the link (i.e., DEF_REGULAR is set). At
4512 this point we have not seen all the input files, so it is
4513 possible that DEF_REGULAR is not set now but will be set
4514 later (it is never cleared). In case of a weak definition,
4515 DEF_REGULAR may be cleared later by a strong definition in
4516 a shared library. We account for that possibility below by
4517 storing information in the dyn_relocs field of the hash
4518 table entry. A similar situation occurs when creating
4519 shared libraries and symbol visibility changes render the
4520 symbol local.
4521
4522 If on the other hand, we are creating an executable, we
4523 may need to keep relocations for symbols satisfied by a
4524 dynamic library if we manage to avoid copy relocs for the
4525 symbol. */
4526 if ((bfd_link_pic (info)
4527 && (must_be_dyn_reloc (info, r_type)
4528 || (h != NULL
4529 && (!SYMBOLIC_BIND (info, h)
4530 || h->root.type == bfd_link_hash_defweak
4531 || !h->def_regular))))
4532 || (ELIMINATE_COPY_RELOCS
4533 && !bfd_link_pic (info)
4534 && h != NULL
4535 && (h->root.type == bfd_link_hash_defweak
4536 || !h->def_regular)))
4537 {
4538 #ifdef DEBUG
4539 fprintf (stderr,
4540 "ppc_elf_check_relocs needs to "
4541 "create relocation for %s\n",
4542 (h && h->root.root.string
4543 ? h->root.root.string : "<unknown>"));
4544 #endif
4545 if (sreloc == NULL)
4546 {
4547 if (htab->elf.dynobj == NULL)
4548 htab->elf.dynobj = abfd;
4549
4550 sreloc = _bfd_elf_make_dynamic_reloc_section
4551 (sec, htab->elf.dynobj, 2, abfd, /*rela?*/ TRUE);
4552
4553 if (sreloc == NULL)
4554 return FALSE;
4555 }
4556
4557 /* If this is a global symbol, we count the number of
4558 relocations we need for this symbol. */
4559 if (h != NULL)
4560 {
4561 struct elf_dyn_relocs *p;
4562 struct elf_dyn_relocs **rel_head;
4563
4564 rel_head = &ppc_elf_hash_entry (h)->dyn_relocs;
4565 p = *rel_head;
4566 if (p == NULL || p->sec != sec)
4567 {
4568 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
4569 if (p == NULL)
4570 return FALSE;
4571 p->next = *rel_head;
4572 *rel_head = p;
4573 p->sec = sec;
4574 p->count = 0;
4575 p->pc_count = 0;
4576 }
4577 p->count += 1;
4578 if (!must_be_dyn_reloc (info, r_type))
4579 p->pc_count += 1;
4580 }
4581 else
4582 {
4583 /* Track dynamic relocs needed for local syms too.
4584 We really need local syms available to do this
4585 easily. Oh well. */
4586 struct ppc_dyn_relocs *p;
4587 struct ppc_dyn_relocs **rel_head;
4588 bfd_boolean is_ifunc;
4589 asection *s;
4590 void *vpp;
4591 Elf_Internal_Sym *isym;
4592
4593 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
4594 abfd, r_symndx);
4595 if (isym == NULL)
4596 return FALSE;
4597
4598 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
4599 if (s == NULL)
4600 s = sec;
4601
4602 vpp = &elf_section_data (s)->local_dynrel;
4603 rel_head = (struct ppc_dyn_relocs **) vpp;
4604 is_ifunc = ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC;
4605 p = *rel_head;
4606 if (p != NULL && p->sec == sec && p->ifunc != is_ifunc)
4607 p = p->next;
4608 if (p == NULL || p->sec != sec || p->ifunc != is_ifunc)
4609 {
4610 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
4611 if (p == NULL)
4612 return FALSE;
4613 p->next = *rel_head;
4614 *rel_head = p;
4615 p->sec = sec;
4616 p->ifunc = is_ifunc;
4617 p->count = 0;
4618 }
4619 p->count += 1;
4620 }
4621 }
4622
4623 break;
4624 }
4625 }
4626
4627 return TRUE;
4628 }
4629 \f
4630 /* Warn for conflicting Tag_GNU_Power_ABI_FP attributes between IBFD
4631 and OBFD, and merge non-conflicting ones. */
4632 void
4633 _bfd_elf_ppc_merge_fp_attributes (bfd *ibfd, struct bfd_link_info *info)
4634 {
4635 bfd *obfd = info->output_bfd;
4636 obj_attribute *in_attr, *in_attrs;
4637 obj_attribute *out_attr, *out_attrs;
4638
4639 in_attrs = elf_known_obj_attributes (ibfd)[OBJ_ATTR_GNU];
4640 out_attrs = elf_known_obj_attributes (obfd)[OBJ_ATTR_GNU];
4641
4642 in_attr = &in_attrs[Tag_GNU_Power_ABI_FP];
4643 out_attr = &out_attrs[Tag_GNU_Power_ABI_FP];
4644
4645 if (in_attr->i != out_attr->i)
4646 {
4647 int in_fp = in_attr->i & 3;
4648 int out_fp = out_attr->i & 3;
4649
4650 if (in_fp == 0)
4651 ;
4652 else if (out_fp == 0)
4653 {
4654 out_attr->type = 1;
4655 out_attr->i ^= in_fp;
4656 }
4657 else if (out_fp != 2 && in_fp == 2)
4658 _bfd_error_handler
4659 /* xgettext:c-format */
4660 (_("warning: %pB uses hard float, %pB uses soft float"), obfd, ibfd);
4661 else if (out_fp == 2 && in_fp != 2)
4662 _bfd_error_handler
4663 /* xgettext:c-format */
4664 (_("warning: %pB uses hard float, %pB uses soft float"), ibfd, obfd);
4665 else if (out_fp == 1 && in_fp == 3)
4666 _bfd_error_handler
4667 /* xgettext:c-format */
4668 (_("warning: %pB uses double-precision hard float, "
4669 "%pB uses single-precision hard float"), obfd, ibfd);
4670 else if (out_fp == 3 && in_fp == 1)
4671 _bfd_error_handler
4672 /* xgettext:c-format */
4673 (_("warning: %pB uses double-precision hard float, "
4674 "%pB uses single-precision hard float"), ibfd, obfd);
4675
4676 in_fp = in_attr->i & 0xc;
4677 out_fp = out_attr->i & 0xc;
4678 if (in_fp == 0)
4679 ;
4680 else if (out_fp == 0)
4681 {
4682 out_attr->type = 1;
4683 out_attr->i ^= in_fp;
4684 }
4685 else if (out_fp != 2 * 4 && in_fp == 2 * 4)
4686 _bfd_error_handler
4687 /* xgettext:c-format */
4688 (_("warning: %pB uses 64-bit long double, "
4689 "%pB uses 128-bit long double"), ibfd, obfd);
4690 else if (in_fp != 2 * 4 && out_fp == 2 * 4)
4691 _bfd_error_handler
4692 /* xgettext:c-format */
4693 (_("warning: %pB uses 64-bit long double, "
4694 "%pB uses 128-bit long double"), obfd, ibfd);
4695 else if (out_fp == 1 * 4 && in_fp == 3 * 4)
4696 _bfd_error_handler
4697 /* xgettext:c-format */
4698 (_("warning: %pB uses IBM long double, "
4699 "%pB uses IEEE long double"), ibfd, obfd);
4700 else if (out_fp == 3 * 4 && in_fp == 1 * 4)
4701 _bfd_error_handler
4702 /* xgettext:c-format */
4703 (_("warning: %pB uses IBM long double, "
4704 "%pB uses IEEE long double"), obfd, ibfd);
4705 }
4706 }
4707
4708 /* Merge object attributes from IBFD into OBFD. Warn if
4709 there are conflicting attributes. */
4710 static bfd_boolean
4711 ppc_elf_merge_obj_attributes (bfd *ibfd, struct bfd_link_info *info)
4712 {
4713 bfd *obfd;
4714 obj_attribute *in_attr, *in_attrs;
4715 obj_attribute *out_attr, *out_attrs;
4716
4717 _bfd_elf_ppc_merge_fp_attributes (ibfd, info);
4718
4719 obfd = info->output_bfd;
4720 in_attrs = elf_known_obj_attributes (ibfd)[OBJ_ATTR_GNU];
4721 out_attrs = elf_known_obj_attributes (obfd)[OBJ_ATTR_GNU];
4722
4723 /* Check for conflicting Tag_GNU_Power_ABI_Vector attributes and
4724 merge non-conflicting ones. */
4725 in_attr = &in_attrs[Tag_GNU_Power_ABI_Vector];
4726 out_attr = &out_attrs[Tag_GNU_Power_ABI_Vector];
4727 if (in_attr->i != out_attr->i)
4728 {
4729 int in_vec = in_attr->i & 3;
4730 int out_vec = out_attr->i & 3;
4731
4732 if (in_vec == 0)
4733 ;
4734 else if (out_vec == 0)
4735 {
4736 out_attr->type = 1;
4737 out_attr->i = in_vec;
4738 }
4739 /* For now, allow generic to transition to AltiVec or SPE
4740 without a warning. If GCC marked files with their stack
4741 alignment and used don't-care markings for files which are
4742 not affected by the vector ABI, we could warn about this
4743 case too. */
4744 else if (in_vec == 1)
4745 ;
4746 else if (out_vec == 1)
4747 {
4748 out_attr->type = 1;
4749 out_attr->i = in_vec;
4750 }
4751 else if (out_vec < in_vec)
4752 _bfd_error_handler
4753 /* xgettext:c-format */
4754 (_("warning: %pB uses AltiVec vector ABI, %pB uses SPE vector ABI"),
4755 obfd, ibfd);
4756 else if (out_vec > in_vec)
4757 _bfd_error_handler
4758 /* xgettext:c-format */
4759 (_("warning: %pB uses AltiVec vector ABI, %pB uses SPE vector ABI"),
4760 ibfd, obfd);
4761 }
4762
4763 /* Check for conflicting Tag_GNU_Power_ABI_Struct_Return attributes
4764 and merge non-conflicting ones. */
4765 in_attr = &in_attrs[Tag_GNU_Power_ABI_Struct_Return];
4766 out_attr = &out_attrs[Tag_GNU_Power_ABI_Struct_Return];
4767 if (in_attr->i != out_attr->i)
4768 {
4769 int in_struct = in_attr->i & 3;
4770 int out_struct = out_attr->i & 3;
4771
4772 if (in_struct == 0 || in_struct == 3)
4773 ;
4774 else if (out_struct == 0)
4775 {
4776 out_attr->type = 1;
4777 out_attr->i = in_struct;
4778 }
4779 else if (out_struct < in_struct)
4780 _bfd_error_handler
4781 /* xgettext:c-format */
4782 (_("warning: %pB uses r3/r4 for small structure returns, "
4783 "%pB uses memory"), obfd, ibfd);
4784 else if (out_struct > in_struct)
4785 _bfd_error_handler
4786 /* xgettext:c-format */
4787 (_("warning: %pB uses r3/r4 for small structure returns, "
4788 "%pB uses memory"), ibfd, obfd);
4789 }
4790
4791 /* Merge Tag_compatibility attributes and any common GNU ones. */
4792 _bfd_elf_merge_object_attributes (ibfd, info);
4793
4794 return TRUE;
4795 }
4796
4797 /* Merge backend specific data from an object file to the output
4798 object file when linking. */
4799
4800 static bfd_boolean
4801 ppc_elf_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info)
4802 {
4803 bfd *obfd = info->output_bfd;
4804 flagword old_flags;
4805 flagword new_flags;
4806 bfd_boolean error;
4807
4808 if (!is_ppc_elf (ibfd) || !is_ppc_elf (obfd))
4809 return TRUE;
4810
4811 /* Check if we have the same endianness. */
4812 if (! _bfd_generic_verify_endian_match (ibfd, info))
4813 return FALSE;
4814
4815 if (!ppc_elf_merge_obj_attributes (ibfd, info))
4816 return FALSE;
4817
4818 new_flags = elf_elfheader (ibfd)->e_flags;
4819 old_flags = elf_elfheader (obfd)->e_flags;
4820 if (!elf_flags_init (obfd))
4821 {
4822 /* First call, no flags set. */
4823 elf_flags_init (obfd) = TRUE;
4824 elf_elfheader (obfd)->e_flags = new_flags;
4825 }
4826
4827 /* Compatible flags are ok. */
4828 else if (new_flags == old_flags)
4829 ;
4830
4831 /* Incompatible flags. */
4832 else
4833 {
4834 /* Warn about -mrelocatable mismatch. Allow -mrelocatable-lib
4835 to be linked with either. */
4836 error = FALSE;
4837 if ((new_flags & EF_PPC_RELOCATABLE) != 0
4838 && (old_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0)
4839 {
4840 error = TRUE;
4841 _bfd_error_handler
4842 (_("%pB: compiled with -mrelocatable and linked with "
4843 "modules compiled normally"), ibfd);
4844 }
4845 else if ((new_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0
4846 && (old_flags & EF_PPC_RELOCATABLE) != 0)
4847 {
4848 error = TRUE;
4849 _bfd_error_handler
4850 (_("%pB: compiled normally and linked with "
4851 "modules compiled with -mrelocatable"), ibfd);
4852 }
4853
4854 /* The output is -mrelocatable-lib iff both the input files are. */
4855 if (! (new_flags & EF_PPC_RELOCATABLE_LIB))
4856 elf_elfheader (obfd)->e_flags &= ~EF_PPC_RELOCATABLE_LIB;
4857
4858 /* The output is -mrelocatable iff it can't be -mrelocatable-lib,
4859 but each input file is either -mrelocatable or -mrelocatable-lib. */
4860 if (! (elf_elfheader (obfd)->e_flags & EF_PPC_RELOCATABLE_LIB)
4861 && (new_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE))
4862 && (old_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE)))
4863 elf_elfheader (obfd)->e_flags |= EF_PPC_RELOCATABLE;
4864
4865 /* Do not warn about eabi vs. V.4 mismatch, just or in the bit if
4866 any module uses it. */
4867 elf_elfheader (obfd)->e_flags |= (new_flags & EF_PPC_EMB);
4868
4869 new_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
4870 old_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
4871
4872 /* Warn about any other mismatches. */
4873 if (new_flags != old_flags)
4874 {
4875 error = TRUE;
4876 _bfd_error_handler
4877 /* xgettext:c-format */
4878 (_("%pB: uses different e_flags (%#x) fields "
4879 "than previous modules (%#x)"),
4880 ibfd, new_flags, old_flags);
4881 }
4882
4883 if (error)
4884 {
4885 bfd_set_error (bfd_error_bad_value);
4886 return FALSE;
4887 }
4888 }
4889
4890 return TRUE;
4891 }
4892
4893 static void
4894 ppc_elf_vle_split16 (bfd *input_bfd,
4895 asection *input_section,
4896 unsigned long offset,
4897 bfd_byte *loc,
4898 bfd_vma value,
4899 split16_format_type split16_format,
4900 bfd_boolean fixup)
4901 {
4902 unsigned int insn, opcode, top5;
4903
4904 insn = bfd_get_32 (input_bfd, loc);
4905 opcode = insn & 0xfc00f800;
4906 if (opcode == E_OR2I_INSN
4907 || opcode == E_AND2I_DOT_INSN
4908 || opcode == E_OR2IS_INSN
4909 || opcode == E_LIS_INSN
4910 || opcode == E_AND2IS_DOT_INSN)
4911 {
4912 if (split16_format != split16a_type)
4913 {
4914 if (fixup)
4915 split16_format = split16a_type;
4916 else
4917 _bfd_error_handler
4918 /* xgettext:c-format */
4919 (_("%pB(%pA+0x%lx): expected 16A style relocation on 0x%08x insn"),
4920 input_bfd, input_section, offset, opcode);
4921 }
4922 }
4923 else if (opcode == E_ADD2I_DOT_INSN
4924 || opcode == E_ADD2IS_INSN
4925 || opcode == E_CMP16I_INSN
4926 || opcode == E_MULL2I_INSN
4927 || opcode == E_CMPL16I_INSN
4928 || opcode == E_CMPH16I_INSN
4929 || opcode == E_CMPHL16I_INSN)
4930 {
4931 if (split16_format != split16d_type)
4932 {
4933 if (fixup)
4934 split16_format = split16d_type;
4935 else
4936 _bfd_error_handler
4937 /* xgettext:c-format */
4938 (_("%pB(%pA+0x%lx): expected 16D style relocation on 0x%08x insn"),
4939 input_bfd, input_section, offset, opcode);
4940 }
4941 }
4942 top5 = value & 0xf800;
4943 top5 = top5 << (split16_format == split16a_type ? 5 : 10);
4944 insn &= (split16_format == split16a_type ? ~0x1f07ff : ~0x3e007ff);
4945 insn |= top5;
4946 insn |= value & 0x7ff;
4947 bfd_put_32 (input_bfd, insn, loc);
4948 }
4949
4950 static void
4951 ppc_elf_vle_split20 (bfd *output_bfd, bfd_byte *loc, bfd_vma value)
4952 {
4953 unsigned int insn;
4954
4955 insn = bfd_get_32 (output_bfd, loc);
4956 /* We have an li20 field, bits 17..20, 11..15, 21..31. */
4957 /* Top 4 bits of value to 17..20. */
4958 insn |= (value & 0xf0000) >> 5;
4959 /* Next 5 bits of the value to 11..15. */
4960 insn |= (value & 0xf800) << 5;
4961 /* And the final 11 bits of the value to bits 21 to 31. */
4962 insn |= value & 0x7ff;
4963 bfd_put_32 (output_bfd, insn, loc);
4964 }
4965
4966 \f
4967 /* Choose which PLT scheme to use, and set .plt flags appropriately.
4968 Returns -1 on error, 0 for old PLT, 1 for new PLT. */
4969 int
4970 ppc_elf_select_plt_layout (bfd *output_bfd ATTRIBUTE_UNUSED,
4971 struct bfd_link_info *info)
4972 {
4973 struct ppc_elf_link_hash_table *htab;
4974 flagword flags;
4975
4976 htab = ppc_elf_hash_table (info);
4977
4978 if (htab->plt_type == PLT_UNSET)
4979 {
4980 struct elf_link_hash_entry *h;
4981
4982 if (htab->params->plt_style == PLT_OLD)
4983 htab->plt_type = PLT_OLD;
4984 else if (bfd_link_pic (info)
4985 && htab->elf.dynamic_sections_created
4986 && (h = elf_link_hash_lookup (&htab->elf, "_mcount",
4987 FALSE, FALSE, TRUE)) != NULL
4988 && (h->type == STT_FUNC
4989 || h->needs_plt)
4990 && h->ref_regular
4991 && !(SYMBOL_CALLS_LOCAL (info, h)
4992 || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)))
4993 {
4994 /* Profiling of shared libs (and pies) is not supported with
4995 secure plt, because ppc32 does profiling before a
4996 function prologue and a secure plt pic call stubs needs
4997 r30 to be set up. */
4998 htab->plt_type = PLT_OLD;
4999 }
5000 else
5001 {
5002 bfd *ibfd;
5003 enum ppc_elf_plt_type plt_type = htab->params->plt_style;
5004
5005 /* Look through the reloc flags left by ppc_elf_check_relocs.
5006 Use the old style bss plt if a file makes plt calls
5007 without using the new relocs, and if ld isn't given
5008 --secure-plt and we never see REL16 relocs. */
5009 if (plt_type == PLT_UNSET)
5010 plt_type = PLT_OLD;
5011 for (ibfd = info->input_bfds; ibfd; ibfd = ibfd->link.next)
5012 if (is_ppc_elf (ibfd))
5013 {
5014 if (ppc_elf_tdata (ibfd)->has_rel16)
5015 plt_type = PLT_NEW;
5016 else if (ppc_elf_tdata (ibfd)->makes_plt_call)
5017 {
5018 plt_type = PLT_OLD;
5019 htab->old_bfd = ibfd;
5020 break;
5021 }
5022 }
5023 htab->plt_type = plt_type;
5024 }
5025 }
5026 if (htab->plt_type == PLT_OLD && htab->params->plt_style == PLT_NEW)
5027 {
5028 if (htab->old_bfd != NULL)
5029 _bfd_error_handler (_("bss-plt forced due to %pB"), htab->old_bfd);
5030 else
5031 _bfd_error_handler (_("bss-plt forced by profiling"));
5032 }
5033
5034 BFD_ASSERT (htab->plt_type != PLT_VXWORKS);
5035
5036 if (htab->plt_type == PLT_NEW)
5037 {
5038 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
5039 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
5040
5041 /* The new PLT is a loaded section. */
5042 if (htab->elf.splt != NULL
5043 && !bfd_set_section_flags (htab->elf.dynobj, htab->elf.splt, flags))
5044 return -1;
5045
5046 /* The new GOT is not executable. */
5047 if (htab->elf.sgot != NULL
5048 && !bfd_set_section_flags (htab->elf.dynobj, htab->elf.sgot, flags))
5049 return -1;
5050 }
5051 else
5052 {
5053 /* Stop an unused .glink section from affecting .text alignment. */
5054 if (htab->glink != NULL
5055 && !bfd_set_section_alignment (htab->elf.dynobj, htab->glink, 0))
5056 return -1;
5057 }
5058 return htab->plt_type == PLT_NEW;
5059 }
5060 \f
5061 /* Return the section that should be marked against GC for a given
5062 relocation. */
5063
5064 static asection *
5065 ppc_elf_gc_mark_hook (asection *sec,
5066 struct bfd_link_info *info,
5067 Elf_Internal_Rela *rel,
5068 struct elf_link_hash_entry *h,
5069 Elf_Internal_Sym *sym)
5070 {
5071 if (h != NULL)
5072 switch (ELF32_R_TYPE (rel->r_info))
5073 {
5074 case R_PPC_GNU_VTINHERIT:
5075 case R_PPC_GNU_VTENTRY:
5076 return NULL;
5077 }
5078
5079 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
5080 }
5081 \f
5082 /* Set plt output section type, htab->tls_get_addr, and call the
5083 generic ELF tls_setup function. */
5084
5085 asection *
5086 ppc_elf_tls_setup (bfd *obfd, struct bfd_link_info *info)
5087 {
5088 struct ppc_elf_link_hash_table *htab;
5089
5090 htab = ppc_elf_hash_table (info);
5091 htab->tls_get_addr = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
5092 FALSE, FALSE, TRUE);
5093 if (htab->plt_type != PLT_NEW)
5094 htab->params->no_tls_get_addr_opt = TRUE;
5095
5096 if (!htab->params->no_tls_get_addr_opt)
5097 {
5098 struct elf_link_hash_entry *opt, *tga;
5099 opt = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_opt",
5100 FALSE, FALSE, TRUE);
5101 if (opt != NULL
5102 && (opt->root.type == bfd_link_hash_defined
5103 || opt->root.type == bfd_link_hash_defweak))
5104 {
5105 /* If glibc supports an optimized __tls_get_addr call stub,
5106 signalled by the presence of __tls_get_addr_opt, and we'll
5107 be calling __tls_get_addr via a plt call stub, then
5108 make __tls_get_addr point to __tls_get_addr_opt. */
5109 tga = htab->tls_get_addr;
5110 if (htab->elf.dynamic_sections_created
5111 && tga != NULL
5112 && (tga->type == STT_FUNC
5113 || tga->needs_plt)
5114 && !(SYMBOL_CALLS_LOCAL (info, tga)
5115 || UNDEFWEAK_NO_DYNAMIC_RELOC (info, tga)))
5116 {
5117 struct plt_entry *ent;
5118 for (ent = tga->plt.plist; ent != NULL; ent = ent->next)
5119 if (ent->plt.refcount > 0)
5120 break;
5121 if (ent != NULL)
5122 {
5123 tga->root.type = bfd_link_hash_indirect;
5124 tga->root.u.i.link = &opt->root;
5125 ppc_elf_copy_indirect_symbol (info, opt, tga);
5126 opt->mark = 1;
5127 if (opt->dynindx != -1)
5128 {
5129 /* Use __tls_get_addr_opt in dynamic relocations. */
5130 opt->dynindx = -1;
5131 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
5132 opt->dynstr_index);
5133 if (!bfd_elf_link_record_dynamic_symbol (info, opt))
5134 return FALSE;
5135 }
5136 htab->tls_get_addr = opt;
5137 }
5138 }
5139 }
5140 else
5141 htab->params->no_tls_get_addr_opt = TRUE;
5142 }
5143 if (htab->plt_type == PLT_NEW
5144 && htab->elf.splt != NULL
5145 && htab->elf.splt->output_section != NULL)
5146 {
5147 elf_section_type (htab->elf.splt->output_section) = SHT_PROGBITS;
5148 elf_section_flags (htab->elf.splt->output_section) = SHF_ALLOC + SHF_WRITE;
5149 }
5150
5151 return _bfd_elf_tls_setup (obfd, info);
5152 }
5153
5154 /* Return TRUE iff REL is a branch reloc with a global symbol matching
5155 HASH. */
5156
5157 static bfd_boolean
5158 branch_reloc_hash_match (const bfd *ibfd,
5159 const Elf_Internal_Rela *rel,
5160 const struct elf_link_hash_entry *hash)
5161 {
5162 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
5163 enum elf_ppc_reloc_type r_type = ELF32_R_TYPE (rel->r_info);
5164 unsigned int r_symndx = ELF32_R_SYM (rel->r_info);
5165
5166 if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type))
5167 {
5168 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
5169 struct elf_link_hash_entry *h;
5170
5171 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5172 while (h->root.type == bfd_link_hash_indirect
5173 || h->root.type == bfd_link_hash_warning)
5174 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5175 if (h == hash)
5176 return TRUE;
5177 }
5178 return FALSE;
5179 }
5180
5181 /* Run through all the TLS relocs looking for optimization
5182 opportunities. */
5183
5184 bfd_boolean
5185 ppc_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED,
5186 struct bfd_link_info *info)
5187 {
5188 bfd *ibfd;
5189 asection *sec;
5190 struct ppc_elf_link_hash_table *htab;
5191 int pass;
5192
5193 if (!bfd_link_executable (info))
5194 return TRUE;
5195
5196 htab = ppc_elf_hash_table (info);
5197 if (htab == NULL)
5198 return FALSE;
5199
5200 /* Make two passes through the relocs. First time check that tls
5201 relocs involved in setting up a tls_get_addr call are indeed
5202 followed by such a call. If they are not, don't do any tls
5203 optimization. On the second pass twiddle tls_mask flags to
5204 notify relocate_section that optimization can be done, and
5205 adjust got and plt refcounts. */
5206 for (pass = 0; pass < 2; ++pass)
5207 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
5208 {
5209 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
5210 asection *got2 = bfd_get_section_by_name (ibfd, ".got2");
5211
5212 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
5213 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
5214 {
5215 Elf_Internal_Rela *relstart, *rel, *relend;
5216 int expecting_tls_get_addr = 0;
5217
5218 /* Read the relocations. */
5219 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
5220 info->keep_memory);
5221 if (relstart == NULL)
5222 return FALSE;
5223
5224 relend = relstart + sec->reloc_count;
5225 for (rel = relstart; rel < relend; rel++)
5226 {
5227 enum elf_ppc_reloc_type r_type;
5228 unsigned long r_symndx;
5229 struct elf_link_hash_entry *h = NULL;
5230 unsigned char *tls_mask;
5231 unsigned char tls_set, tls_clear;
5232 bfd_boolean is_local;
5233 bfd_signed_vma *got_count;
5234
5235 r_symndx = ELF32_R_SYM (rel->r_info);
5236 if (r_symndx >= symtab_hdr->sh_info)
5237 {
5238 struct elf_link_hash_entry **sym_hashes;
5239
5240 sym_hashes = elf_sym_hashes (ibfd);
5241 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5242 while (h->root.type == bfd_link_hash_indirect
5243 || h->root.type == bfd_link_hash_warning)
5244 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5245 }
5246
5247 is_local = FALSE;
5248 if (h == NULL
5249 || !h->def_dynamic)
5250 is_local = TRUE;
5251
5252 r_type = ELF32_R_TYPE (rel->r_info);
5253 /* If this section has old-style __tls_get_addr calls
5254 without marker relocs, then check that each
5255 __tls_get_addr call reloc is preceded by a reloc
5256 that conceivably belongs to the __tls_get_addr arg
5257 setup insn. If we don't find matching arg setup
5258 relocs, don't do any tls optimization. */
5259 if (pass == 0
5260 && sec->has_tls_get_addr_call
5261 && h != NULL
5262 && h == htab->tls_get_addr
5263 && !expecting_tls_get_addr
5264 && is_branch_reloc (r_type))
5265 {
5266 info->callbacks->minfo ("%H __tls_get_addr lost arg, "
5267 "TLS optimization disabled\n",
5268 ibfd, sec, rel->r_offset);
5269 if (elf_section_data (sec)->relocs != relstart)
5270 free (relstart);
5271 return TRUE;
5272 }
5273
5274 expecting_tls_get_addr = 0;
5275 switch (r_type)
5276 {
5277 case R_PPC_GOT_TLSLD16:
5278 case R_PPC_GOT_TLSLD16_LO:
5279 expecting_tls_get_addr = 1;
5280 /* Fall through. */
5281
5282 case R_PPC_GOT_TLSLD16_HI:
5283 case R_PPC_GOT_TLSLD16_HA:
5284 /* These relocs should never be against a symbol
5285 defined in a shared lib. Leave them alone if
5286 that turns out to be the case. */
5287 if (!is_local)
5288 continue;
5289
5290 /* LD -> LE */
5291 tls_set = 0;
5292 tls_clear = TLS_LD;
5293 break;
5294
5295 case R_PPC_GOT_TLSGD16:
5296 case R_PPC_GOT_TLSGD16_LO:
5297 expecting_tls_get_addr = 1;
5298 /* Fall through. */
5299
5300 case R_PPC_GOT_TLSGD16_HI:
5301 case R_PPC_GOT_TLSGD16_HA:
5302 if (is_local)
5303 /* GD -> LE */
5304 tls_set = 0;
5305 else
5306 /* GD -> IE */
5307 tls_set = TLS_TLS | TLS_TPRELGD;
5308 tls_clear = TLS_GD;
5309 break;
5310
5311 case R_PPC_GOT_TPREL16:
5312 case R_PPC_GOT_TPREL16_LO:
5313 case R_PPC_GOT_TPREL16_HI:
5314 case R_PPC_GOT_TPREL16_HA:
5315 if (is_local)
5316 {
5317 /* IE -> LE */
5318 tls_set = 0;
5319 tls_clear = TLS_TPREL;
5320 break;
5321 }
5322 else
5323 continue;
5324
5325 case R_PPC_TLSGD:
5326 case R_PPC_TLSLD:
5327 expecting_tls_get_addr = 2;
5328 tls_set = 0;
5329 tls_clear = 0;
5330 break;
5331
5332 default:
5333 continue;
5334 }
5335
5336 if (pass == 0)
5337 {
5338 if (!expecting_tls_get_addr
5339 || (expecting_tls_get_addr == 1
5340 && !sec->has_tls_get_addr_call))
5341 continue;
5342
5343 if (rel + 1 < relend
5344 && branch_reloc_hash_match (ibfd, rel + 1,
5345 htab->tls_get_addr))
5346 continue;
5347
5348 /* Uh oh, we didn't find the expected call. We
5349 could just mark this symbol to exclude it
5350 from tls optimization but it's safer to skip
5351 the entire optimization. */
5352 info->callbacks->minfo (_("%H arg lost __tls_get_addr, "
5353 "TLS optimization disabled\n"),
5354 ibfd, sec, rel->r_offset);
5355 if (elf_section_data (sec)->relocs != relstart)
5356 free (relstart);
5357 return TRUE;
5358 }
5359
5360 if (h != NULL)
5361 {
5362 tls_mask = &ppc_elf_hash_entry (h)->tls_mask;
5363 got_count = &h->got.refcount;
5364 }
5365 else
5366 {
5367 bfd_signed_vma *lgot_refs;
5368 struct plt_entry **local_plt;
5369 unsigned char *lgot_masks;
5370
5371 lgot_refs = elf_local_got_refcounts (ibfd);
5372 if (lgot_refs == NULL)
5373 abort ();
5374 local_plt = (struct plt_entry **)
5375 (lgot_refs + symtab_hdr->sh_info);
5376 lgot_masks = (unsigned char *)
5377 (local_plt + symtab_hdr->sh_info);
5378 tls_mask = &lgot_masks[r_symndx];
5379 got_count = &lgot_refs[r_symndx];
5380 }
5381
5382 /* If we don't have old-style __tls_get_addr calls
5383 without TLSGD/TLSLD marker relocs, and we haven't
5384 found a new-style __tls_get_addr call with a
5385 marker for this symbol, then we either have a
5386 broken object file or an -mlongcall style
5387 indirect call to __tls_get_addr without a marker.
5388 Disable optimization in this case. */
5389 if ((tls_clear & (TLS_GD | TLS_LD)) != 0
5390 && !sec->has_tls_get_addr_call
5391 && ((*tls_mask & (TLS_TLS | TLS_MARK))
5392 != (TLS_TLS | TLS_MARK)))
5393 continue;
5394
5395 if (expecting_tls_get_addr)
5396 {
5397 struct plt_entry *ent;
5398 bfd_vma addend = 0;
5399
5400 if (bfd_link_pic (info)
5401 && ELF32_R_TYPE (rel[1].r_info) == R_PPC_PLTREL24)
5402 addend = rel[1].r_addend;
5403 ent = find_plt_ent (&htab->tls_get_addr->plt.plist,
5404 got2, addend);
5405 if (ent != NULL && ent->plt.refcount > 0)
5406 ent->plt.refcount -= 1;
5407
5408 if (expecting_tls_get_addr == 2)
5409 continue;
5410 }
5411
5412 if (tls_set == 0)
5413 {
5414 /* We managed to get rid of a got entry. */
5415 if (*got_count > 0)
5416 *got_count -= 1;
5417 }
5418
5419 *tls_mask |= tls_set;
5420 *tls_mask &= ~tls_clear;
5421 }
5422
5423 if (elf_section_data (sec)->relocs != relstart)
5424 free (relstart);
5425 }
5426 }
5427 htab->do_tls_opt = 1;
5428 return TRUE;
5429 }
5430 \f
5431 /* Find dynamic relocs for H that apply to read-only sections. */
5432
5433 static asection *
5434 readonly_dynrelocs (struct elf_link_hash_entry *h)
5435 {
5436 struct elf_dyn_relocs *p;
5437
5438 for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next)
5439 {
5440 asection *s = p->sec->output_section;
5441
5442 if (s != NULL && (s->flags & SEC_READONLY) != 0)
5443 return p->sec;
5444 }
5445 return NULL;
5446 }
5447
5448 /* Return true if we have dynamic relocs against H or any of its weak
5449 aliases, that apply to read-only sections. Cannot be used after
5450 size_dynamic_sections. */
5451
5452 static bfd_boolean
5453 alias_readonly_dynrelocs (struct elf_link_hash_entry *h)
5454 {
5455 struct ppc_elf_link_hash_entry *eh = ppc_elf_hash_entry (h);
5456 do
5457 {
5458 if (readonly_dynrelocs (&eh->elf))
5459 return TRUE;
5460 eh = ppc_elf_hash_entry (eh->elf.u.alias);
5461 } while (eh != NULL && &eh->elf != h);
5462
5463 return FALSE;
5464 }
5465
5466 /* Return whether H has pc-relative dynamic relocs. */
5467
5468 static bfd_boolean
5469 pc_dynrelocs (struct elf_link_hash_entry *h)
5470 {
5471 struct elf_dyn_relocs *p;
5472
5473 for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next)
5474 if (p->pc_count != 0)
5475 return TRUE;
5476 return FALSE;
5477 }
5478
5479 /* Adjust a symbol defined by a dynamic object and referenced by a
5480 regular object. The current definition is in some section of the
5481 dynamic object, but we're not including those sections. We have to
5482 change the definition to something the rest of the link can
5483 understand. */
5484
5485 static bfd_boolean
5486 ppc_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
5487 struct elf_link_hash_entry *h)
5488 {
5489 struct ppc_elf_link_hash_table *htab;
5490 asection *s;
5491
5492 #ifdef DEBUG
5493 fprintf (stderr, "ppc_elf_adjust_dynamic_symbol called for %s\n",
5494 h->root.root.string);
5495 #endif
5496
5497 /* Make sure we know what is going on here. */
5498 htab = ppc_elf_hash_table (info);
5499 BFD_ASSERT (htab->elf.dynobj != NULL
5500 && (h->needs_plt
5501 || h->type == STT_GNU_IFUNC
5502 || h->is_weakalias
5503 || (h->def_dynamic
5504 && h->ref_regular
5505 && !h->def_regular)));
5506
5507 /* Deal with function syms. */
5508 if (h->type == STT_FUNC
5509 || h->type == STT_GNU_IFUNC
5510 || h->needs_plt)
5511 {
5512 bfd_boolean local = (SYMBOL_CALLS_LOCAL (info, h)
5513 || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h));
5514 /* Discard dyn_relocs when non-pic if we've decided that a
5515 function symbol is local. */
5516 if (!bfd_link_pic (info) && local)
5517 ppc_elf_hash_entry (h)->dyn_relocs = NULL;
5518
5519 /* Clear procedure linkage table information for any symbol that
5520 won't need a .plt entry. */
5521 struct plt_entry *ent;
5522 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
5523 if (ent->plt.refcount > 0)
5524 break;
5525 if (ent == NULL
5526 || (h->type != STT_GNU_IFUNC && local))
5527 {
5528 /* A PLT entry is not required/allowed when:
5529
5530 1. We are not using ld.so; because then the PLT entry
5531 can't be set up, so we can't use one. In this case,
5532 ppc_elf_adjust_dynamic_symbol won't even be called.
5533
5534 2. GC has rendered the entry unused.
5535
5536 3. We know for certain that a call to this symbol
5537 will go to this object, or will remain undefined. */
5538 h->plt.plist = NULL;
5539 h->needs_plt = 0;
5540 h->pointer_equality_needed = 0;
5541 }
5542 else
5543 {
5544 /* Taking a function's address in a read/write section
5545 doesn't require us to define the function symbol in the
5546 executable on a plt call stub. A dynamic reloc can
5547 be used instead, giving better runtime performance.
5548 (Calls via that function pointer don't need to bounce
5549 through the plt call stub.) Similarly, use a dynamic
5550 reloc for a weak reference when possible, allowing the
5551 resolution of the symbol to be set at load time rather
5552 than link time. */
5553 if ((h->pointer_equality_needed
5554 || (h->non_got_ref
5555 && !h->ref_regular_nonweak
5556 && !UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)))
5557 && !htab->is_vxworks
5558 && !ppc_elf_hash_entry (h)->has_sda_refs
5559 && !readonly_dynrelocs (h))
5560 {
5561 h->pointer_equality_needed = 0;
5562 /* If we haven't seen a branch reloc then we don't need
5563 a plt entry. */
5564 if (!h->needs_plt)
5565 h->plt.plist = NULL;
5566 }
5567 else if (!bfd_link_pic (info))
5568 /* We are going to be defining the function symbol on the
5569 plt stub, so no dyn_relocs needed when non-pic. */
5570 ppc_elf_hash_entry (h)->dyn_relocs = NULL;
5571 }
5572 h->protected_def = 0;
5573 /* Function symbols can't have copy relocs. */
5574 return TRUE;
5575 }
5576 else
5577 h->plt.plist = NULL;
5578
5579 /* If this is a weak symbol, and there is a real definition, the
5580 processor independent code will have arranged for us to see the
5581 real definition first, and we can just use the same value. */
5582 if (h->is_weakalias)
5583 {
5584 struct elf_link_hash_entry *def = weakdef (h);
5585 BFD_ASSERT (def->root.type == bfd_link_hash_defined);
5586 h->root.u.def.section = def->root.u.def.section;
5587 h->root.u.def.value = def->root.u.def.value;
5588 if (def->root.u.def.section == htab->elf.sdynbss
5589 || def->root.u.def.section == htab->elf.sdynrelro
5590 || def->root.u.def.section == htab->dynsbss)
5591 ppc_elf_hash_entry (h)->dyn_relocs = NULL;
5592 return TRUE;
5593 }
5594
5595 /* This is a reference to a symbol defined by a dynamic object which
5596 is not a function. */
5597
5598 /* If we are creating a shared library, we must presume that the
5599 only references to the symbol are via the global offset table.
5600 For such cases we need not do anything here; the relocations will
5601 be handled correctly by relocate_section. */
5602 if (bfd_link_pic (info))
5603 {
5604 h->protected_def = 0;
5605 return TRUE;
5606 }
5607
5608 /* If there are no references to this symbol that do not use the
5609 GOT, we don't need to generate a copy reloc. */
5610 if (!h->non_got_ref)
5611 {
5612 h->protected_def = 0;
5613 return TRUE;
5614 }
5615
5616 /* Protected variables do not work with .dynbss. The copy in
5617 .dynbss won't be used by the shared library with the protected
5618 definition for the variable. Editing to PIC, or text relocations
5619 are preferable to an incorrect program. */
5620 if (h->protected_def)
5621 {
5622 if (ELIMINATE_COPY_RELOCS
5623 && ppc_elf_hash_entry (h)->has_addr16_ha
5624 && ppc_elf_hash_entry (h)->has_addr16_lo
5625 && htab->params->pic_fixup == 0
5626 && info->disable_target_specific_optimizations <= 1)
5627 htab->params->pic_fixup = 1;
5628 return TRUE;
5629 }
5630
5631 /* If -z nocopyreloc was given, we won't generate them either. */
5632 if (info->nocopyreloc)
5633 return TRUE;
5634
5635 /* If we don't find any dynamic relocs in read-only sections, then
5636 we'll be keeping the dynamic relocs and avoiding the copy reloc.
5637 We can't do this if there are any small data relocations. This
5638 doesn't work on VxWorks, where we can not have dynamic
5639 relocations (other than copy and jump slot relocations) in an
5640 executable. */
5641 if (ELIMINATE_COPY_RELOCS
5642 && !ppc_elf_hash_entry (h)->has_sda_refs
5643 && !htab->is_vxworks
5644 && !h->def_regular
5645 && !alias_readonly_dynrelocs (h))
5646 return TRUE;
5647
5648 /* We must allocate the symbol in our .dynbss section, which will
5649 become part of the .bss section of the executable. There will be
5650 an entry for this symbol in the .dynsym section. The dynamic
5651 object will contain position independent code, so all references
5652 from the dynamic object to this symbol will go through the global
5653 offset table. The dynamic linker will use the .dynsym entry to
5654 determine the address it must put in the global offset table, so
5655 both the dynamic object and the regular object will refer to the
5656 same memory location for the variable.
5657
5658 Of course, if the symbol is referenced using SDAREL relocs, we
5659 must instead allocate it in .sbss. */
5660 if (ppc_elf_hash_entry (h)->has_sda_refs)
5661 s = htab->dynsbss;
5662 else if ((h->root.u.def.section->flags & SEC_READONLY) != 0)
5663 s = htab->elf.sdynrelro;
5664 else
5665 s = htab->elf.sdynbss;
5666 BFD_ASSERT (s != NULL);
5667
5668 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
5669 {
5670 asection *srel;
5671
5672 /* We must generate a R_PPC_COPY reloc to tell the dynamic
5673 linker to copy the initial value out of the dynamic object
5674 and into the runtime process image. */
5675 if (ppc_elf_hash_entry (h)->has_sda_refs)
5676 srel = htab->relsbss;
5677 else if ((h->root.u.def.section->flags & SEC_READONLY) != 0)
5678 srel = htab->elf.sreldynrelro;
5679 else
5680 srel = htab->elf.srelbss;
5681 BFD_ASSERT (srel != NULL);
5682 srel->size += sizeof (Elf32_External_Rela);
5683 h->needs_copy = 1;
5684 }
5685
5686 /* We no longer want dyn_relocs. */
5687 ppc_elf_hash_entry (h)->dyn_relocs = NULL;
5688 return _bfd_elf_adjust_dynamic_copy (info, h, s);
5689 }
5690 \f
5691 /* Generate a symbol to mark plt call stubs. For non-PIC code the sym is
5692 xxxxxxxx.plt_call32.<callee> where xxxxxxxx is a hex number, usually 0,
5693 specifying the addend on the plt relocation. For -fpic code, the sym
5694 is xxxxxxxx.plt_pic32.<callee>, and for -fPIC
5695 xxxxxxxx.got2.plt_pic32.<callee>. */
5696
5697 static bfd_boolean
5698 add_stub_sym (struct plt_entry *ent,
5699 struct elf_link_hash_entry *h,
5700 struct bfd_link_info *info)
5701 {
5702 struct elf_link_hash_entry *sh;
5703 size_t len1, len2, len3;
5704 char *name;
5705 const char *stub;
5706 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
5707
5708 if (bfd_link_pic (info))
5709 stub = ".plt_pic32.";
5710 else
5711 stub = ".plt_call32.";
5712
5713 len1 = strlen (h->root.root.string);
5714 len2 = strlen (stub);
5715 len3 = 0;
5716 if (ent->sec)
5717 len3 = strlen (ent->sec->name);
5718 name = bfd_malloc (len1 + len2 + len3 + 9);
5719 if (name == NULL)
5720 return FALSE;
5721 sprintf (name, "%08x", (unsigned) ent->addend & 0xffffffff);
5722 if (ent->sec)
5723 memcpy (name + 8, ent->sec->name, len3);
5724 memcpy (name + 8 + len3, stub, len2);
5725 memcpy (name + 8 + len3 + len2, h->root.root.string, len1 + 1);
5726 sh = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
5727 if (sh == NULL)
5728 return FALSE;
5729 if (sh->root.type == bfd_link_hash_new)
5730 {
5731 sh->root.type = bfd_link_hash_defined;
5732 sh->root.u.def.section = htab->glink;
5733 sh->root.u.def.value = ent->glink_offset;
5734 sh->ref_regular = 1;
5735 sh->def_regular = 1;
5736 sh->ref_regular_nonweak = 1;
5737 sh->forced_local = 1;
5738 sh->non_elf = 0;
5739 sh->root.linker_def = 1;
5740 }
5741 return TRUE;
5742 }
5743
5744 /* Allocate NEED contiguous space in .got, and return the offset.
5745 Handles allocation of the got header when crossing 32k. */
5746
5747 static bfd_vma
5748 allocate_got (struct ppc_elf_link_hash_table *htab, unsigned int need)
5749 {
5750 bfd_vma where;
5751 unsigned int max_before_header;
5752
5753 if (htab->plt_type == PLT_VXWORKS)
5754 {
5755 where = htab->elf.sgot->size;
5756 htab->elf.sgot->size += need;
5757 }
5758 else
5759 {
5760 max_before_header = htab->plt_type == PLT_NEW ? 32768 : 32764;
5761 if (need <= htab->got_gap)
5762 {
5763 where = max_before_header - htab->got_gap;
5764 htab->got_gap -= need;
5765 }
5766 else
5767 {
5768 if (htab->elf.sgot->size + need > max_before_header
5769 && htab->elf.sgot->size <= max_before_header)
5770 {
5771 htab->got_gap = max_before_header - htab->elf.sgot->size;
5772 htab->elf.sgot->size = max_before_header + htab->got_header_size;
5773 }
5774 where = htab->elf.sgot->size;
5775 htab->elf.sgot->size += need;
5776 }
5777 }
5778 return where;
5779 }
5780
5781 /* Calculate size of GOT entries for symbol given its TLS_MASK.
5782 TLS_LD is excluded because those go in a special GOT slot. */
5783
5784 static inline unsigned int
5785 got_entries_needed (int tls_mask)
5786 {
5787 unsigned int need;
5788 if ((tls_mask & TLS_TLS) == 0)
5789 need = 4;
5790 else
5791 {
5792 need = 0;
5793 if ((tls_mask & TLS_GD) != 0)
5794 need += 8;
5795 if ((tls_mask & (TLS_TPREL | TLS_TPRELGD)) != 0)
5796 need += 4;
5797 if ((tls_mask & TLS_DTPREL) != 0)
5798 need += 4;
5799 }
5800 return need;
5801 }
5802
5803 /* Calculate size of relocs needed for symbol given its TLS_MASK and
5804 NEEDed GOT entries. KNOWN says a TPREL offset can be calculated at
5805 link time. */
5806
5807 static inline unsigned int
5808 got_relocs_needed (int tls_mask, unsigned int need, bfd_boolean known)
5809 {
5810 /* All the entries we allocated need relocs.
5811 Except IE in executable with a local symbol. We could also omit
5812 the DTPREL reloc on the second word of a GD entry under the same
5813 condition as that for IE, but ld.so needs to differentiate
5814 LD and GD entries. */
5815 if (known && (tls_mask & TLS_TLS) != 0
5816 && (tls_mask & (TLS_TPREL | TLS_TPRELGD)) != 0)
5817 need -= 4;
5818 return need * sizeof (Elf32_External_Rela) / 4;
5819 }
5820
5821 /* If H is undefined, make it dynamic if that makes sense. */
5822
5823 static bfd_boolean
5824 ensure_undef_dynamic (struct bfd_link_info *info,
5825 struct elf_link_hash_entry *h)
5826 {
5827 struct elf_link_hash_table *htab = elf_hash_table (info);
5828
5829 if (htab->dynamic_sections_created
5830 && ((info->dynamic_undefined_weak != 0
5831 && h->root.type == bfd_link_hash_undefweak)
5832 || h->root.type == bfd_link_hash_undefined)
5833 && h->dynindx == -1
5834 && !h->forced_local
5835 && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
5836 return bfd_elf_link_record_dynamic_symbol (info, h);
5837 return TRUE;
5838 }
5839
5840 /* Allocate space in associated reloc sections for dynamic relocs. */
5841
5842 static bfd_boolean
5843 allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
5844 {
5845 struct bfd_link_info *info = inf;
5846 struct ppc_elf_link_hash_entry *eh;
5847 struct ppc_elf_link_hash_table *htab;
5848 struct elf_dyn_relocs *p;
5849 bfd_boolean dyn;
5850
5851 if (h->root.type == bfd_link_hash_indirect)
5852 return TRUE;
5853
5854 htab = ppc_elf_hash_table (info);
5855 eh = (struct ppc_elf_link_hash_entry *) h;
5856 if (eh->elf.got.refcount > 0
5857 || (ELIMINATE_COPY_RELOCS
5858 && !eh->elf.def_regular
5859 && eh->elf.protected_def
5860 && eh->has_addr16_ha
5861 && eh->has_addr16_lo
5862 && htab->params->pic_fixup > 0))
5863 {
5864 unsigned int need;
5865
5866 /* Make sure this symbol is output as a dynamic symbol. */
5867 if (!ensure_undef_dynamic (info, &eh->elf))
5868 return FALSE;
5869
5870 need = 0;
5871 if ((eh->tls_mask & (TLS_TLS | TLS_LD)) == (TLS_TLS | TLS_LD))
5872 {
5873 if (!eh->elf.def_dynamic)
5874 /* We'll just use htab->tlsld_got.offset. This should
5875 always be the case. It's a little odd if we have
5876 a local dynamic reloc against a non-local symbol. */
5877 htab->tlsld_got.refcount += 1;
5878 else
5879 need += 8;
5880 }
5881 need += got_entries_needed (eh->tls_mask);
5882 if (need == 0)
5883 eh->elf.got.offset = (bfd_vma) -1;
5884 else
5885 {
5886 eh->elf.got.offset = allocate_got (htab, need);
5887 if ((bfd_link_pic (info)
5888 || (htab->elf.dynamic_sections_created
5889 && eh->elf.dynindx != -1
5890 && !SYMBOL_REFERENCES_LOCAL (info, &eh->elf)))
5891 && !UNDEFWEAK_NO_DYNAMIC_RELOC (info, &eh->elf))
5892 {
5893 asection *rsec;
5894 bfd_boolean tprel_known = (bfd_link_executable (info)
5895 && SYMBOL_REFERENCES_LOCAL (info,
5896 &eh->elf));
5897
5898 need = got_relocs_needed (eh->tls_mask, need, tprel_known);
5899 if ((eh->tls_mask & (TLS_TLS | TLS_LD)) == (TLS_TLS | TLS_LD)
5900 && eh->elf.def_dynamic)
5901 need -= sizeof (Elf32_External_Rela);
5902 rsec = htab->elf.srelgot;
5903 if (eh->elf.type == STT_GNU_IFUNC)
5904 rsec = htab->elf.irelplt;
5905 rsec->size += need;
5906 }
5907 }
5908 }
5909 else
5910 eh->elf.got.offset = (bfd_vma) -1;
5911
5912 /* If no dynamic sections we can't have dynamic relocs, except for
5913 IFUNCs which are handled even in static executables. */
5914 if (!htab->elf.dynamic_sections_created
5915 && h->type != STT_GNU_IFUNC)
5916 eh->dyn_relocs = NULL;
5917
5918 /* Discard relocs on undefined symbols that must be local. */
5919 else if (h->root.type == bfd_link_hash_undefined
5920 && ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
5921 eh->dyn_relocs = NULL;
5922
5923 /* Also discard relocs on undefined weak syms with non-default
5924 visibility, or when dynamic_undefined_weak says so. */
5925 else if (UNDEFWEAK_NO_DYNAMIC_RELOC (info, h))
5926 eh->dyn_relocs = NULL;
5927
5928 if (eh->dyn_relocs == NULL)
5929 ;
5930
5931 /* In the shared -Bsymbolic case, discard space allocated for
5932 dynamic pc-relative relocs against symbols which turn out to be
5933 defined in regular objects. For the normal shared case, discard
5934 space for relocs that have become local due to symbol visibility
5935 changes. */
5936 else if (bfd_link_pic (info))
5937 {
5938 /* Relocs that use pc_count are those that appear on a call insn,
5939 or certain REL relocs (see must_be_dyn_reloc) that can be
5940 generated via assembly. We want calls to protected symbols to
5941 resolve directly to the function rather than going via the plt.
5942 If people want function pointer comparisons to work as expected
5943 then they should avoid writing weird assembly. */
5944 if (SYMBOL_CALLS_LOCAL (info, h))
5945 {
5946 struct elf_dyn_relocs **pp;
5947
5948 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
5949 {
5950 p->count -= p->pc_count;
5951 p->pc_count = 0;
5952 if (p->count == 0)
5953 *pp = p->next;
5954 else
5955 pp = &p->next;
5956 }
5957 }
5958
5959 if (htab->is_vxworks)
5960 {
5961 struct elf_dyn_relocs **pp;
5962
5963 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
5964 {
5965 if (strcmp (p->sec->output_section->name, ".tls_vars") == 0)
5966 *pp = p->next;
5967 else
5968 pp = &p->next;
5969 }
5970 }
5971
5972 if (eh->dyn_relocs != NULL)
5973 {
5974 /* Make sure this symbol is output as a dynamic symbol. */
5975 if (!ensure_undef_dynamic (info, h))
5976 return FALSE;
5977 }
5978 }
5979 else if (ELIMINATE_COPY_RELOCS)
5980 {
5981 /* For the non-pic case, discard space for relocs against
5982 symbols which turn out to need copy relocs or are not
5983 dynamic. */
5984 if (h->dynamic_adjusted
5985 && !h->def_regular
5986 && !ELF_COMMON_DEF_P (h)
5987 && !(h->protected_def
5988 && eh->has_addr16_ha
5989 && eh->has_addr16_lo
5990 && htab->params->pic_fixup > 0))
5991 {
5992 /* Make sure this symbol is output as a dynamic symbol. */
5993 if (!ensure_undef_dynamic (info, h))
5994 return FALSE;
5995
5996 if (h->dynindx == -1)
5997 eh->dyn_relocs = NULL;
5998 }
5999 else
6000 eh->dyn_relocs = NULL;
6001 }
6002
6003 /* Allocate space. */
6004 for (p = eh->dyn_relocs; p != NULL; p = p->next)
6005 {
6006 asection *sreloc = elf_section_data (p->sec)->sreloc;
6007 if (eh->elf.type == STT_GNU_IFUNC)
6008 sreloc = htab->elf.irelplt;
6009 sreloc->size += p->count * sizeof (Elf32_External_Rela);
6010 }
6011
6012 /* Handle PLT relocs. Done last, after dynindx has settled. */
6013 dyn = htab->elf.dynamic_sections_created && h->dynindx != -1;
6014 if (dyn || h->type == STT_GNU_IFUNC)
6015 {
6016 struct plt_entry *ent;
6017 bfd_boolean doneone = FALSE;
6018 bfd_vma plt_offset = 0, glink_offset = 0;
6019
6020 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
6021 if (ent->plt.refcount > 0)
6022 {
6023 asection *s = htab->elf.splt;
6024
6025 if (!dyn)
6026 s = htab->elf.iplt;
6027
6028 if (htab->plt_type == PLT_NEW || !dyn)
6029 {
6030 if (!doneone)
6031 {
6032 plt_offset = s->size;
6033 s->size += 4;
6034 }
6035 ent->plt.offset = plt_offset;
6036
6037 s = htab->glink;
6038 if (!doneone || bfd_link_pic (info))
6039 {
6040 glink_offset = s->size;
6041 s->size += GLINK_ENTRY_SIZE (htab, h);
6042 }
6043 if (!doneone
6044 && !bfd_link_pic (info)
6045 && h->def_dynamic
6046 && !h->def_regular)
6047 {
6048 h->root.u.def.section = s;
6049 h->root.u.def.value = glink_offset;
6050 }
6051 ent->glink_offset = glink_offset;
6052
6053 if (htab->params->emit_stub_syms
6054 && !add_stub_sym (ent, h, info))
6055 return FALSE;
6056 }
6057 else
6058 {
6059 if (!doneone)
6060 {
6061 /* If this is the first .plt entry, make room
6062 for the special first entry. */
6063 if (s->size == 0)
6064 s->size += htab->plt_initial_entry_size;
6065
6066 /* The PowerPC PLT is actually composed of two
6067 parts, the first part is 2 words (for a load
6068 and a jump), and then there is a remaining
6069 word available at the end. */
6070 plt_offset = (htab->plt_initial_entry_size
6071 + (htab->plt_slot_size
6072 * ((s->size
6073 - htab->plt_initial_entry_size)
6074 / htab->plt_entry_size)));
6075
6076 /* If this symbol is not defined in a regular
6077 file, and we are not generating a shared
6078 library, then set the symbol to this location
6079 in the .plt. This is to avoid text
6080 relocations, and is required to make
6081 function pointers compare as equal between
6082 the normal executable and the shared library. */
6083 if (! bfd_link_pic (info)
6084 && h->def_dynamic
6085 && !h->def_regular)
6086 {
6087 h->root.u.def.section = s;
6088 h->root.u.def.value = plt_offset;
6089 }
6090
6091 /* Make room for this entry. */
6092 s->size += htab->plt_entry_size;
6093 /* After the 8192nd entry, room for two entries
6094 is allocated. */
6095 if (htab->plt_type == PLT_OLD
6096 && (s->size - htab->plt_initial_entry_size)
6097 / htab->plt_entry_size
6098 > PLT_NUM_SINGLE_ENTRIES)
6099 s->size += htab->plt_entry_size;
6100 }
6101 ent->plt.offset = plt_offset;
6102 }
6103
6104 /* We also need to make an entry in the .rela.plt section. */
6105 if (!doneone)
6106 {
6107 if (!dyn)
6108 htab->elf.irelplt->size += sizeof (Elf32_External_Rela);
6109 else
6110 {
6111 htab->elf.srelplt->size += sizeof (Elf32_External_Rela);
6112
6113 if (htab->plt_type == PLT_VXWORKS)
6114 {
6115 /* Allocate space for the unloaded relocations. */
6116 if (!bfd_link_pic (info)
6117 && htab->elf.dynamic_sections_created)
6118 {
6119 if (ent->plt.offset
6120 == (bfd_vma) htab->plt_initial_entry_size)
6121 {
6122 htab->srelplt2->size
6123 += (sizeof (Elf32_External_Rela)
6124 * VXWORKS_PLTRESOLVE_RELOCS);
6125 }
6126
6127 htab->srelplt2->size
6128 += (sizeof (Elf32_External_Rela)
6129 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS);
6130 }
6131
6132 /* Every PLT entry has an associated GOT entry in
6133 .got.plt. */
6134 htab->elf.sgotplt->size += 4;
6135 }
6136 }
6137 doneone = TRUE;
6138 }
6139 }
6140 else
6141 ent->plt.offset = (bfd_vma) -1;
6142
6143 if (!doneone)
6144 {
6145 h->plt.plist = NULL;
6146 h->needs_plt = 0;
6147 }
6148 }
6149 else
6150 {
6151 h->plt.plist = NULL;
6152 h->needs_plt = 0;
6153 }
6154
6155 return TRUE;
6156 }
6157
6158 /* Set DF_TEXTREL if we find any dynamic relocs that apply to
6159 read-only sections. */
6160
6161 static bfd_boolean
6162 maybe_set_textrel (struct elf_link_hash_entry *h, void *info_p)
6163 {
6164 asection *sec;
6165
6166 if (h->root.type == bfd_link_hash_indirect)
6167 return TRUE;
6168
6169 sec = readonly_dynrelocs (h);
6170 if (sec != NULL)
6171 {
6172 struct bfd_link_info *info = (struct bfd_link_info *) info_p;
6173
6174 info->flags |= DF_TEXTREL;
6175 info->callbacks->minfo
6176 (_("%pB: dynamic relocation against `%pT' in read-only section `%pA'\n"),
6177 sec->owner, h->root.root.string, sec);
6178
6179 /* Not an error, just cut short the traversal. */
6180 return FALSE;
6181 }
6182 return TRUE;
6183 }
6184
6185 static const unsigned char glink_eh_frame_cie[] =
6186 {
6187 0, 0, 0, 16, /* length. */
6188 0, 0, 0, 0, /* id. */
6189 1, /* CIE version. */
6190 'z', 'R', 0, /* Augmentation string. */
6191 4, /* Code alignment. */
6192 0x7c, /* Data alignment. */
6193 65, /* RA reg. */
6194 1, /* Augmentation size. */
6195 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding. */
6196 DW_CFA_def_cfa, 1, 0 /* def_cfa: r1 offset 0. */
6197 };
6198
6199 /* Set the sizes of the dynamic sections. */
6200
6201 static bfd_boolean
6202 ppc_elf_size_dynamic_sections (bfd *output_bfd,
6203 struct bfd_link_info *info)
6204 {
6205 struct ppc_elf_link_hash_table *htab;
6206 asection *s;
6207 bfd_boolean relocs;
6208 bfd *ibfd;
6209
6210 #ifdef DEBUG
6211 fprintf (stderr, "ppc_elf_size_dynamic_sections called\n");
6212 #endif
6213
6214 htab = ppc_elf_hash_table (info);
6215 BFD_ASSERT (htab->elf.dynobj != NULL);
6216
6217 if (elf_hash_table (info)->dynamic_sections_created)
6218 {
6219 /* Set the contents of the .interp section to the interpreter. */
6220 if (bfd_link_executable (info) && !info->nointerp)
6221 {
6222 s = bfd_get_linker_section (htab->elf.dynobj, ".interp");
6223 BFD_ASSERT (s != NULL);
6224 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
6225 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
6226 }
6227 }
6228
6229 if (htab->plt_type == PLT_OLD)
6230 htab->got_header_size = 16;
6231 else if (htab->plt_type == PLT_NEW)
6232 htab->got_header_size = 12;
6233
6234 /* Set up .got offsets for local syms, and space for local dynamic
6235 relocs. */
6236 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
6237 {
6238 bfd_signed_vma *local_got;
6239 bfd_signed_vma *end_local_got;
6240 struct plt_entry **local_plt;
6241 struct plt_entry **end_local_plt;
6242 char *lgot_masks;
6243 bfd_size_type locsymcount;
6244 Elf_Internal_Shdr *symtab_hdr;
6245
6246 if (!is_ppc_elf (ibfd))
6247 continue;
6248
6249 for (s = ibfd->sections; s != NULL; s = s->next)
6250 {
6251 struct ppc_dyn_relocs *p;
6252
6253 for (p = ((struct ppc_dyn_relocs *)
6254 elf_section_data (s)->local_dynrel);
6255 p != NULL;
6256 p = p->next)
6257 {
6258 if (!bfd_is_abs_section (p->sec)
6259 && bfd_is_abs_section (p->sec->output_section))
6260 {
6261 /* Input section has been discarded, either because
6262 it is a copy of a linkonce section or due to
6263 linker script /DISCARD/, so we'll be discarding
6264 the relocs too. */
6265 }
6266 else if (htab->is_vxworks
6267 && strcmp (p->sec->output_section->name,
6268 ".tls_vars") == 0)
6269 {
6270 /* Relocations in vxworks .tls_vars sections are
6271 handled specially by the loader. */
6272 }
6273 else if (p->count != 0)
6274 {
6275 asection *sreloc = elf_section_data (p->sec)->sreloc;
6276 if (p->ifunc)
6277 sreloc = htab->elf.irelplt;
6278 sreloc->size += p->count * sizeof (Elf32_External_Rela);
6279 if ((p->sec->output_section->flags
6280 & (SEC_READONLY | SEC_ALLOC))
6281 == (SEC_READONLY | SEC_ALLOC))
6282 {
6283 info->flags |= DF_TEXTREL;
6284 info->callbacks->minfo (_("%pB: dynamic relocation in read-only section `%pA'\n"),
6285 p->sec->owner, p->sec);
6286 }
6287 }
6288 }
6289 }
6290
6291 local_got = elf_local_got_refcounts (ibfd);
6292 if (!local_got)
6293 continue;
6294
6295 symtab_hdr = &elf_symtab_hdr (ibfd);
6296 locsymcount = symtab_hdr->sh_info;
6297 end_local_got = local_got + locsymcount;
6298 local_plt = (struct plt_entry **) end_local_got;
6299 end_local_plt = local_plt + locsymcount;
6300 lgot_masks = (char *) end_local_plt;
6301
6302 for (; local_got < end_local_got; ++local_got, ++lgot_masks)
6303 if (*local_got > 0)
6304 {
6305 unsigned int need;
6306 if ((*lgot_masks & (TLS_TLS | TLS_LD)) == (TLS_TLS | TLS_LD))
6307 htab->tlsld_got.refcount += 1;
6308 need = got_entries_needed (*lgot_masks);
6309 if (need == 0)
6310 *local_got = (bfd_vma) -1;
6311 else
6312 {
6313 *local_got = allocate_got (htab, need);
6314 if (bfd_link_pic (info))
6315 {
6316 asection *srel;
6317 bfd_boolean tprel_known = bfd_link_executable (info);
6318
6319 need = got_relocs_needed (*lgot_masks, need, tprel_known);
6320 srel = htab->elf.srelgot;
6321 if ((*lgot_masks & (TLS_TLS | PLT_IFUNC)) == PLT_IFUNC)
6322 srel = htab->elf.irelplt;
6323 srel->size += need;
6324 }
6325 }
6326 }
6327 else
6328 *local_got = (bfd_vma) -1;
6329
6330 if (htab->is_vxworks)
6331 continue;
6332
6333 /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */
6334 for (; local_plt < end_local_plt; ++local_plt)
6335 {
6336 struct plt_entry *ent;
6337 bfd_boolean doneone = FALSE;
6338 bfd_vma plt_offset = 0, glink_offset = 0;
6339
6340 for (ent = *local_plt; ent != NULL; ent = ent->next)
6341 if (ent->plt.refcount > 0)
6342 {
6343 s = htab->elf.iplt;
6344
6345 if (!doneone)
6346 {
6347 plt_offset = s->size;
6348 s->size += 4;
6349 }
6350 ent->plt.offset = plt_offset;
6351
6352 s = htab->glink;
6353 if (!doneone || bfd_link_pic (info))
6354 {
6355 glink_offset = s->size;
6356 s->size += GLINK_ENTRY_SIZE (htab, NULL);
6357 }
6358 ent->glink_offset = glink_offset;
6359
6360 if (!doneone)
6361 {
6362 htab->elf.irelplt->size += sizeof (Elf32_External_Rela);
6363 doneone = TRUE;
6364 }
6365 }
6366 else
6367 ent->plt.offset = (bfd_vma) -1;
6368 }
6369 }
6370
6371 /* Allocate space for global sym dynamic relocs. */
6372 elf_link_hash_traverse (elf_hash_table (info), allocate_dynrelocs, info);
6373
6374 if (htab->tlsld_got.refcount > 0)
6375 {
6376 htab->tlsld_got.offset = allocate_got (htab, 8);
6377 if (bfd_link_pic (info))
6378 htab->elf.srelgot->size += sizeof (Elf32_External_Rela);
6379 }
6380 else
6381 htab->tlsld_got.offset = (bfd_vma) -1;
6382
6383 if (htab->elf.sgot != NULL && htab->plt_type != PLT_VXWORKS)
6384 {
6385 unsigned int g_o_t = 32768;
6386
6387 /* If we haven't allocated the header, do so now. When we get here,
6388 for old plt/got the got size will be 0 to 32764 (not allocated),
6389 or 32780 to 65536 (header allocated). For new plt/got, the
6390 corresponding ranges are 0 to 32768 and 32780 to 65536. */
6391 if (htab->elf.sgot->size <= 32768)
6392 {
6393 g_o_t = htab->elf.sgot->size;
6394 if (htab->plt_type == PLT_OLD)
6395 g_o_t += 4;
6396 htab->elf.sgot->size += htab->got_header_size;
6397 }
6398
6399 htab->elf.hgot->root.u.def.value = g_o_t;
6400 }
6401 if (bfd_link_pic (info))
6402 {
6403 struct elf_link_hash_entry *sda = htab->sdata[0].sym;
6404
6405 sda->root.u.def.section = htab->elf.hgot->root.u.def.section;
6406 sda->root.u.def.value = htab->elf.hgot->root.u.def.value;
6407 }
6408 if (info->emitrelocations)
6409 {
6410 struct elf_link_hash_entry *sda = htab->sdata[0].sym;
6411
6412 if (sda != NULL && sda->ref_regular)
6413 sda->root.u.def.section->flags |= SEC_KEEP;
6414 sda = htab->sdata[1].sym;
6415 if (sda != NULL && sda->ref_regular)
6416 sda->root.u.def.section->flags |= SEC_KEEP;
6417 }
6418
6419 if (htab->glink != NULL
6420 && htab->glink->size != 0
6421 && htab->elf.dynamic_sections_created)
6422 {
6423 htab->glink_pltresolve = htab->glink->size;
6424 /* Space for the branch table. */
6425 htab->glink->size
6426 += htab->elf.srelplt->size / (sizeof (Elf32_External_Rela) / 4) - 4;
6427 /* Pad out to align the start of PLTresolve. */
6428 htab->glink->size += -htab->glink->size & (htab->params->ppc476_workaround
6429 ? 63 : 15);
6430 htab->glink->size += GLINK_PLTRESOLVE;
6431
6432 if (htab->params->emit_stub_syms)
6433 {
6434 struct elf_link_hash_entry *sh;
6435 sh = elf_link_hash_lookup (&htab->elf, "__glink",
6436 TRUE, FALSE, FALSE);
6437 if (sh == NULL)
6438 return FALSE;
6439 if (sh->root.type == bfd_link_hash_new)
6440 {
6441 sh->root.type = bfd_link_hash_defined;
6442 sh->root.u.def.section = htab->glink;
6443 sh->root.u.def.value = htab->glink_pltresolve;
6444 sh->ref_regular = 1;
6445 sh->def_regular = 1;
6446 sh->ref_regular_nonweak = 1;
6447 sh->forced_local = 1;
6448 sh->non_elf = 0;
6449 sh->root.linker_def = 1;
6450 }
6451 sh = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve",
6452 TRUE, FALSE, FALSE);
6453 if (sh == NULL)
6454 return FALSE;
6455 if (sh->root.type == bfd_link_hash_new)
6456 {
6457 sh->root.type = bfd_link_hash_defined;
6458 sh->root.u.def.section = htab->glink;
6459 sh->root.u.def.value = htab->glink->size - GLINK_PLTRESOLVE;
6460 sh->ref_regular = 1;
6461 sh->def_regular = 1;
6462 sh->ref_regular_nonweak = 1;
6463 sh->forced_local = 1;
6464 sh->non_elf = 0;
6465 sh->root.linker_def = 1;
6466 }
6467 }
6468 }
6469
6470 if (htab->glink != NULL
6471 && htab->glink->size != 0
6472 && htab->glink_eh_frame != NULL
6473 && !bfd_is_abs_section (htab->glink_eh_frame->output_section)
6474 && _bfd_elf_eh_frame_present (info))
6475 {
6476 s = htab->glink_eh_frame;
6477 s->size = sizeof (glink_eh_frame_cie) + 20;
6478 if (bfd_link_pic (info))
6479 {
6480 s->size += 4;
6481 if (htab->glink->size - GLINK_PLTRESOLVE + 8 >= 256)
6482 s->size += 4;
6483 }
6484 }
6485
6486 /* We've now determined the sizes of the various dynamic sections.
6487 Allocate memory for them. */
6488 relocs = FALSE;
6489 for (s = htab->elf.dynobj->sections; s != NULL; s = s->next)
6490 {
6491 bfd_boolean strip_section = TRUE;
6492
6493 if ((s->flags & SEC_LINKER_CREATED) == 0)
6494 continue;
6495
6496 if (s == htab->elf.splt
6497 || s == htab->elf.sgot)
6498 {
6499 /* We'd like to strip these sections if they aren't needed, but if
6500 we've exported dynamic symbols from them we must leave them.
6501 It's too late to tell BFD to get rid of the symbols. */
6502 if (htab->elf.hplt != NULL)
6503 strip_section = FALSE;
6504 /* Strip this section if we don't need it; see the
6505 comment below. */
6506 }
6507 else if (s == htab->elf.iplt
6508 || s == htab->glink
6509 || s == htab->glink_eh_frame
6510 || s == htab->elf.sgotplt
6511 || s == htab->sbss
6512 || s == htab->elf.sdynbss
6513 || s == htab->elf.sdynrelro
6514 || s == htab->dynsbss)
6515 {
6516 /* Strip these too. */
6517 }
6518 else if (s == htab->sdata[0].section
6519 || s == htab->sdata[1].section)
6520 {
6521 strip_section = (s->flags & SEC_KEEP) == 0;
6522 }
6523 else if (CONST_STRNEQ (bfd_get_section_name (htab->elf.dynobj, s),
6524 ".rela"))
6525 {
6526 if (s->size != 0)
6527 {
6528 /* Remember whether there are any relocation sections. */
6529 relocs = TRUE;
6530
6531 /* We use the reloc_count field as a counter if we need
6532 to copy relocs into the output file. */
6533 s->reloc_count = 0;
6534 }
6535 }
6536 else
6537 {
6538 /* It's not one of our sections, so don't allocate space. */
6539 continue;
6540 }
6541
6542 if (s->size == 0 && strip_section)
6543 {
6544 /* If we don't need this section, strip it from the
6545 output file. This is mostly to handle .rela.bss and
6546 .rela.plt. We must create both sections in
6547 create_dynamic_sections, because they must be created
6548 before the linker maps input sections to output
6549 sections. The linker does that before
6550 adjust_dynamic_symbol is called, and it is that
6551 function which decides whether anything needs to go
6552 into these sections. */
6553 s->flags |= SEC_EXCLUDE;
6554 continue;
6555 }
6556
6557 if ((s->flags & SEC_HAS_CONTENTS) == 0)
6558 continue;
6559
6560 /* Allocate memory for the section contents. */
6561 s->contents = bfd_zalloc (htab->elf.dynobj, s->size);
6562 if (s->contents == NULL)
6563 return FALSE;
6564 }
6565
6566 if (htab->elf.dynamic_sections_created)
6567 {
6568 /* Add some entries to the .dynamic section. We fill in the
6569 values later, in ppc_elf_finish_dynamic_sections, but we
6570 must add the entries now so that we get the correct size for
6571 the .dynamic section. The DT_DEBUG entry is filled in by the
6572 dynamic linker and used by the debugger. */
6573 #define add_dynamic_entry(TAG, VAL) \
6574 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
6575
6576 if (bfd_link_executable (info))
6577 {
6578 if (!add_dynamic_entry (DT_DEBUG, 0))
6579 return FALSE;
6580 }
6581
6582 if (htab->elf.splt != NULL && htab->elf.splt->size != 0)
6583 {
6584 if (!add_dynamic_entry (DT_PLTGOT, 0)
6585 || !add_dynamic_entry (DT_PLTRELSZ, 0)
6586 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
6587 || !add_dynamic_entry (DT_JMPREL, 0))
6588 return FALSE;
6589 }
6590
6591 if (htab->plt_type == PLT_NEW
6592 && htab->glink != NULL
6593 && htab->glink->size != 0)
6594 {
6595 if (!add_dynamic_entry (DT_PPC_GOT, 0))
6596 return FALSE;
6597 if (!htab->params->no_tls_get_addr_opt
6598 && htab->tls_get_addr != NULL
6599 && htab->tls_get_addr->plt.plist != NULL
6600 && !add_dynamic_entry (DT_PPC_OPT, PPC_OPT_TLS))
6601 return FALSE;
6602 }
6603
6604 if (relocs)
6605 {
6606 if (!add_dynamic_entry (DT_RELA, 0)
6607 || !add_dynamic_entry (DT_RELASZ, 0)
6608 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
6609 return FALSE;
6610 }
6611
6612 /* If any dynamic relocs apply to a read-only section, then we
6613 need a DT_TEXTREL entry. */
6614 if ((info->flags & DF_TEXTREL) == 0)
6615 elf_link_hash_traverse (elf_hash_table (info), maybe_set_textrel,
6616 info);
6617
6618 if ((info->flags & DF_TEXTREL) != 0)
6619 {
6620 if (!add_dynamic_entry (DT_TEXTREL, 0))
6621 return FALSE;
6622 }
6623 if (htab->is_vxworks
6624 && !elf_vxworks_add_dynamic_entries (output_bfd, info))
6625 return FALSE;
6626 }
6627 #undef add_dynamic_entry
6628
6629 if (htab->glink_eh_frame != NULL
6630 && htab->glink_eh_frame->contents != NULL)
6631 {
6632 unsigned char *p = htab->glink_eh_frame->contents;
6633 bfd_vma val;
6634
6635 memcpy (p, glink_eh_frame_cie, sizeof (glink_eh_frame_cie));
6636 /* CIE length (rewrite in case little-endian). */
6637 bfd_put_32 (htab->elf.dynobj, sizeof (glink_eh_frame_cie) - 4, p);
6638 p += sizeof (glink_eh_frame_cie);
6639 /* FDE length. */
6640 val = htab->glink_eh_frame->size - 4 - sizeof (glink_eh_frame_cie);
6641 bfd_put_32 (htab->elf.dynobj, val, p);
6642 p += 4;
6643 /* CIE pointer. */
6644 val = p - htab->glink_eh_frame->contents;
6645 bfd_put_32 (htab->elf.dynobj, val, p);
6646 p += 4;
6647 /* Offset to .glink. Set later. */
6648 p += 4;
6649 /* .glink size. */
6650 bfd_put_32 (htab->elf.dynobj, htab->glink->size, p);
6651 p += 4;
6652 /* Augmentation. */
6653 p += 1;
6654
6655 if (bfd_link_pic (info)
6656 && htab->elf.dynamic_sections_created)
6657 {
6658 bfd_vma adv = (htab->glink->size - GLINK_PLTRESOLVE + 8) >> 2;
6659 if (adv < 64)
6660 *p++ = DW_CFA_advance_loc + adv;
6661 else if (adv < 256)
6662 {
6663 *p++ = DW_CFA_advance_loc1;
6664 *p++ = adv;
6665 }
6666 else if (adv < 65536)
6667 {
6668 *p++ = DW_CFA_advance_loc2;
6669 bfd_put_16 (htab->elf.dynobj, adv, p);
6670 p += 2;
6671 }
6672 else
6673 {
6674 *p++ = DW_CFA_advance_loc4;
6675 bfd_put_32 (htab->elf.dynobj, adv, p);
6676 p += 4;
6677 }
6678 *p++ = DW_CFA_register;
6679 *p++ = 65;
6680 p++;
6681 *p++ = DW_CFA_advance_loc + 4;
6682 *p++ = DW_CFA_restore_extended;
6683 *p++ = 65;
6684 }
6685 BFD_ASSERT ((bfd_vma) ((p + 3 - htab->glink_eh_frame->contents) & -4)
6686 == htab->glink_eh_frame->size);
6687 }
6688
6689 return TRUE;
6690 }
6691
6692 /* Arrange to have _SDA_BASE_ or _SDA2_BASE_ stripped from the output
6693 if it looks like nothing is using them. */
6694
6695 static void
6696 maybe_strip_sdasym (bfd *output_bfd, elf_linker_section_t *lsect)
6697 {
6698 struct elf_link_hash_entry *sda = lsect->sym;
6699
6700 if (sda != NULL && !sda->ref_regular && sda->dynindx == -1)
6701 {
6702 asection *s;
6703
6704 s = bfd_get_section_by_name (output_bfd, lsect->name);
6705 if (s == NULL || bfd_section_removed_from_list (output_bfd, s))
6706 {
6707 s = bfd_get_section_by_name (output_bfd, lsect->bss_name);
6708 if (s == NULL || bfd_section_removed_from_list (output_bfd, s))
6709 {
6710 sda->def_regular = 0;
6711 /* This is somewhat magic. See elf_link_output_extsym. */
6712 sda->ref_dynamic = 1;
6713 sda->forced_local = 0;
6714 }
6715 }
6716 }
6717 }
6718
6719 void
6720 ppc_elf_maybe_strip_sdata_syms (struct bfd_link_info *info)
6721 {
6722 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
6723
6724 if (htab != NULL)
6725 {
6726 maybe_strip_sdasym (info->output_bfd, &htab->sdata[0]);
6727 maybe_strip_sdasym (info->output_bfd, &htab->sdata[1]);
6728 }
6729 }
6730
6731
6732 /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
6733
6734 static bfd_boolean
6735 ppc_elf_hash_symbol (struct elf_link_hash_entry *h)
6736 {
6737 if (h->plt.plist != NULL
6738 && !h->def_regular
6739 && (!h->pointer_equality_needed
6740 || !h->ref_regular_nonweak))
6741 return FALSE;
6742
6743 return _bfd_elf_hash_symbol (h);
6744 }
6745 \f
6746 #define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0]))
6747
6748 /* Relaxation trampolines. r12 is available for clobbering (r11, is
6749 used for some functions that are allowed to break the ABI). */
6750 static const int shared_stub_entry[] =
6751 {
6752 0x7c0802a6, /* mflr 0 */
6753 0x429f0005, /* bcl 20, 31, .Lxxx */
6754 0x7d8802a6, /* mflr 12 */
6755 0x3d8c0000, /* addis 12, 12, (xxx-.Lxxx)@ha */
6756 0x398c0000, /* addi 12, 12, (xxx-.Lxxx)@l */
6757 0x7c0803a6, /* mtlr 0 */
6758 0x7d8903a6, /* mtctr 12 */
6759 0x4e800420, /* bctr */
6760 };
6761
6762 static const int stub_entry[] =
6763 {
6764 0x3d800000, /* lis 12,xxx@ha */
6765 0x398c0000, /* addi 12,12,xxx@l */
6766 0x7d8903a6, /* mtctr 12 */
6767 0x4e800420, /* bctr */
6768 };
6769
6770 struct ppc_elf_relax_info
6771 {
6772 unsigned int workaround_size;
6773 unsigned int picfixup_size;
6774 };
6775
6776 /* This function implements long branch trampolines, and the ppc476
6777 icache bug workaround. Any section needing trampolines or patch
6778 space for the workaround has its size extended so that we can
6779 add trampolines at the end of the section. */
6780
6781 static bfd_boolean
6782 ppc_elf_relax_section (bfd *abfd,
6783 asection *isec,
6784 struct bfd_link_info *link_info,
6785 bfd_boolean *again)
6786 {
6787 struct one_branch_fixup
6788 {
6789 struct one_branch_fixup *next;
6790 asection *tsec;
6791 /* Final link, can use the symbol offset. For a
6792 relocatable link we use the symbol's index. */
6793 bfd_vma toff;
6794 bfd_vma trampoff;
6795 };
6796
6797 Elf_Internal_Shdr *symtab_hdr;
6798 bfd_byte *contents = NULL;
6799 Elf_Internal_Sym *isymbuf = NULL;
6800 Elf_Internal_Rela *internal_relocs = NULL;
6801 Elf_Internal_Rela *irel, *irelend = NULL;
6802 struct one_branch_fixup *branch_fixups = NULL;
6803 struct ppc_elf_relax_info *relax_info = NULL;
6804 unsigned changes = 0;
6805 bfd_boolean workaround_change;
6806 struct ppc_elf_link_hash_table *htab;
6807 bfd_size_type trampbase, trampoff, newsize, picfixup_size;
6808 asection *got2;
6809 bfd_boolean maybe_pasted;
6810
6811 *again = FALSE;
6812
6813 /* No need to do anything with non-alloc or non-code sections. */
6814 if ((isec->flags & SEC_ALLOC) == 0
6815 || (isec->flags & SEC_CODE) == 0
6816 || (isec->flags & SEC_LINKER_CREATED) != 0
6817 || isec->size < 4)
6818 return TRUE;
6819
6820 /* We cannot represent the required PIC relocs in the output, so don't
6821 do anything. The linker doesn't support mixing -shared and -r
6822 anyway. */
6823 if (bfd_link_relocatable (link_info) && bfd_link_pic (link_info))
6824 return TRUE;
6825
6826 htab = ppc_elf_hash_table (link_info);
6827 if (htab == NULL)
6828 return TRUE;
6829
6830 isec->size = (isec->size + 3) & -4;
6831 if (isec->rawsize == 0)
6832 isec->rawsize = isec->size;
6833 trampbase = isec->size;
6834
6835 BFD_ASSERT (isec->sec_info_type == SEC_INFO_TYPE_NONE
6836 || isec->sec_info_type == SEC_INFO_TYPE_TARGET);
6837 isec->sec_info_type = SEC_INFO_TYPE_TARGET;
6838
6839 if (htab->params->ppc476_workaround
6840 || htab->params->pic_fixup > 0)
6841 {
6842 if (elf_section_data (isec)->sec_info == NULL)
6843 {
6844 elf_section_data (isec)->sec_info
6845 = bfd_zalloc (abfd, sizeof (struct ppc_elf_relax_info));
6846 if (elf_section_data (isec)->sec_info == NULL)
6847 return FALSE;
6848 }
6849 relax_info = elf_section_data (isec)->sec_info;
6850 trampbase -= relax_info->workaround_size;
6851 }
6852
6853 maybe_pasted = (strcmp (isec->output_section->name, ".init") == 0
6854 || strcmp (isec->output_section->name, ".fini") == 0);
6855 /* Space for a branch around any trampolines. */
6856 trampoff = trampbase;
6857 if (maybe_pasted && trampbase == isec->rawsize)
6858 trampoff += 4;
6859
6860 symtab_hdr = &elf_symtab_hdr (abfd);
6861 picfixup_size = 0;
6862 if (htab->params->branch_trampolines
6863 || htab->params->pic_fixup > 0)
6864 {
6865 /* Get a copy of the native relocations. */
6866 if (isec->reloc_count != 0)
6867 {
6868 internal_relocs = _bfd_elf_link_read_relocs (abfd, isec, NULL, NULL,
6869 link_info->keep_memory);
6870 if (internal_relocs == NULL)
6871 goto error_return;
6872 }
6873
6874 got2 = bfd_get_section_by_name (abfd, ".got2");
6875
6876 irelend = internal_relocs + isec->reloc_count;
6877 for (irel = internal_relocs; irel < irelend; irel++)
6878 {
6879 unsigned long r_type = ELF32_R_TYPE (irel->r_info);
6880 bfd_vma toff, roff;
6881 asection *tsec;
6882 struct one_branch_fixup *f;
6883 size_t insn_offset = 0;
6884 bfd_vma max_branch_offset = 0, val;
6885 bfd_byte *hit_addr;
6886 unsigned long t0;
6887 struct elf_link_hash_entry *h;
6888 struct plt_entry **plist;
6889 unsigned char sym_type;
6890
6891 switch (r_type)
6892 {
6893 case R_PPC_REL24:
6894 case R_PPC_LOCAL24PC:
6895 case R_PPC_PLTREL24:
6896 max_branch_offset = 1 << 25;
6897 break;
6898
6899 case R_PPC_REL14:
6900 case R_PPC_REL14_BRTAKEN:
6901 case R_PPC_REL14_BRNTAKEN:
6902 max_branch_offset = 1 << 15;
6903 break;
6904
6905 case R_PPC_ADDR16_HA:
6906 if (htab->params->pic_fixup > 0)
6907 break;
6908 continue;
6909
6910 default:
6911 continue;
6912 }
6913
6914 /* Get the value of the symbol referred to by the reloc. */
6915 h = NULL;
6916 if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
6917 {
6918 /* A local symbol. */
6919 Elf_Internal_Sym *isym;
6920
6921 /* Read this BFD's local symbols. */
6922 if (isymbuf == NULL)
6923 {
6924 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
6925 if (isymbuf == NULL)
6926 isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
6927 symtab_hdr->sh_info, 0,
6928 NULL, NULL, NULL);
6929 if (isymbuf == 0)
6930 goto error_return;
6931 }
6932 isym = isymbuf + ELF32_R_SYM (irel->r_info);
6933 if (isym->st_shndx == SHN_UNDEF)
6934 tsec = bfd_und_section_ptr;
6935 else if (isym->st_shndx == SHN_ABS)
6936 tsec = bfd_abs_section_ptr;
6937 else if (isym->st_shndx == SHN_COMMON)
6938 tsec = bfd_com_section_ptr;
6939 else
6940 tsec = bfd_section_from_elf_index (abfd, isym->st_shndx);
6941
6942 toff = isym->st_value;
6943 sym_type = ELF_ST_TYPE (isym->st_info);
6944 }
6945 else
6946 {
6947 /* Global symbol handling. */
6948 unsigned long indx;
6949
6950 indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
6951 h = elf_sym_hashes (abfd)[indx];
6952
6953 while (h->root.type == bfd_link_hash_indirect
6954 || h->root.type == bfd_link_hash_warning)
6955 h = (struct elf_link_hash_entry *) h->root.u.i.link;
6956
6957 if (h->root.type == bfd_link_hash_defined
6958 || h->root.type == bfd_link_hash_defweak)
6959 {
6960 tsec = h->root.u.def.section;
6961 toff = h->root.u.def.value;
6962 }
6963 else if (h->root.type == bfd_link_hash_undefined
6964 || h->root.type == bfd_link_hash_undefweak)
6965 {
6966 tsec = bfd_und_section_ptr;
6967 toff = bfd_link_relocatable (link_info) ? indx : 0;
6968 }
6969 else
6970 continue;
6971
6972 /* If this branch is to __tls_get_addr then we may later
6973 optimise away the call. We won't be needing a long-
6974 branch stub in that case. */
6975 if (bfd_link_executable (link_info)
6976 && h == htab->tls_get_addr
6977 && irel != internal_relocs)
6978 {
6979 unsigned long t_symndx = ELF32_R_SYM (irel[-1].r_info);
6980 unsigned long t_rtype = ELF32_R_TYPE (irel[-1].r_info);
6981 unsigned int tls_mask = 0;
6982
6983 /* The previous reloc should be one of R_PPC_TLSGD or
6984 R_PPC_TLSLD, or for older object files, a reloc
6985 on the __tls_get_addr arg setup insn. Get tls
6986 mask bits from the symbol on that reloc. */
6987 if (t_symndx < symtab_hdr->sh_info)
6988 {
6989 bfd_vma *local_got_offsets = elf_local_got_offsets (abfd);
6990
6991 if (local_got_offsets != NULL)
6992 {
6993 struct plt_entry **local_plt = (struct plt_entry **)
6994 (local_got_offsets + symtab_hdr->sh_info);
6995 char *lgot_masks = (char *)
6996 (local_plt + symtab_hdr->sh_info);
6997 tls_mask = lgot_masks[t_symndx];
6998 }
6999 }
7000 else
7001 {
7002 struct elf_link_hash_entry *th
7003 = elf_sym_hashes (abfd)[t_symndx - symtab_hdr->sh_info];
7004
7005 while (th->root.type == bfd_link_hash_indirect
7006 || th->root.type == bfd_link_hash_warning)
7007 th = (struct elf_link_hash_entry *) th->root.u.i.link;
7008
7009 tls_mask
7010 = ((struct ppc_elf_link_hash_entry *) th)->tls_mask;
7011 }
7012
7013 /* The mask bits tell us if the call will be
7014 optimised away. */
7015 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0
7016 && (t_rtype == R_PPC_TLSGD
7017 || t_rtype == R_PPC_GOT_TLSGD16
7018 || t_rtype == R_PPC_GOT_TLSGD16_LO))
7019 continue;
7020 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0
7021 && (t_rtype == R_PPC_TLSLD
7022 || t_rtype == R_PPC_GOT_TLSLD16
7023 || t_rtype == R_PPC_GOT_TLSLD16_LO))
7024 continue;
7025 }
7026
7027 sym_type = h->type;
7028 }
7029
7030 if (r_type == R_PPC_ADDR16_HA)
7031 {
7032 if (h != NULL
7033 && !h->def_regular
7034 && h->protected_def
7035 && ppc_elf_hash_entry (h)->has_addr16_ha
7036 && ppc_elf_hash_entry (h)->has_addr16_lo)
7037 picfixup_size += 12;
7038 continue;
7039 }
7040
7041 /* The condition here under which we call find_plt_ent must
7042 match that in relocate_section. If we call find_plt_ent here
7043 but not in relocate_section, or vice versa, then the branch
7044 destination used here may be incorrect. */
7045 plist = NULL;
7046 if (h != NULL)
7047 {
7048 /* We know is_branch_reloc (r_type) is true. */
7049 if (h->type == STT_GNU_IFUNC
7050 || r_type == R_PPC_PLTREL24)
7051 plist = &h->plt.plist;
7052 }
7053 else if (sym_type == STT_GNU_IFUNC
7054 && elf_local_got_offsets (abfd) != NULL)
7055 {
7056 bfd_vma *local_got_offsets = elf_local_got_offsets (abfd);
7057 struct plt_entry **local_plt = (struct plt_entry **)
7058 (local_got_offsets + symtab_hdr->sh_info);
7059 plist = local_plt + ELF32_R_SYM (irel->r_info);
7060 }
7061 if (plist != NULL)
7062 {
7063 bfd_vma addend = 0;
7064 struct plt_entry *ent;
7065
7066 if (r_type == R_PPC_PLTREL24 && bfd_link_pic (link_info))
7067 addend = irel->r_addend;
7068 ent = find_plt_ent (plist, got2, addend);
7069 if (ent != NULL)
7070 {
7071 if (htab->plt_type == PLT_NEW
7072 || h == NULL
7073 || !htab->elf.dynamic_sections_created
7074 || h->dynindx == -1)
7075 {
7076 tsec = htab->glink;
7077 toff = ent->glink_offset;
7078 }
7079 else
7080 {
7081 tsec = htab->elf.splt;
7082 toff = ent->plt.offset;
7083 }
7084 }
7085 }
7086
7087 /* If the branch and target are in the same section, you have
7088 no hope of adding stubs. We'll error out later should the
7089 branch overflow. */
7090 if (tsec == isec)
7091 continue;
7092
7093 /* There probably isn't any reason to handle symbols in
7094 SEC_MERGE sections; SEC_MERGE doesn't seem a likely
7095 attribute for a code section, and we are only looking at
7096 branches. However, implement it correctly here as a
7097 reference for other target relax_section functions. */
7098 if (0 && tsec->sec_info_type == SEC_INFO_TYPE_MERGE)
7099 {
7100 /* At this stage in linking, no SEC_MERGE symbol has been
7101 adjusted, so all references to such symbols need to be
7102 passed through _bfd_merged_section_offset. (Later, in
7103 relocate_section, all SEC_MERGE symbols *except* for
7104 section symbols have been adjusted.)
7105
7106 gas may reduce relocations against symbols in SEC_MERGE
7107 sections to a relocation against the section symbol when
7108 the original addend was zero. When the reloc is against
7109 a section symbol we should include the addend in the
7110 offset passed to _bfd_merged_section_offset, since the
7111 location of interest is the original symbol. On the
7112 other hand, an access to "sym+addend" where "sym" is not
7113 a section symbol should not include the addend; Such an
7114 access is presumed to be an offset from "sym"; The
7115 location of interest is just "sym". */
7116 if (sym_type == STT_SECTION)
7117 toff += irel->r_addend;
7118
7119 toff
7120 = _bfd_merged_section_offset (abfd, &tsec,
7121 elf_section_data (tsec)->sec_info,
7122 toff);
7123
7124 if (sym_type != STT_SECTION)
7125 toff += irel->r_addend;
7126 }
7127 /* PLTREL24 addends are special. */
7128 else if (r_type != R_PPC_PLTREL24)
7129 toff += irel->r_addend;
7130
7131 /* Attempted -shared link of non-pic code loses. */
7132 if ((!bfd_link_relocatable (link_info)
7133 && tsec == bfd_und_section_ptr)
7134 || tsec->output_section == NULL
7135 || (tsec->owner != NULL
7136 && (tsec->owner->flags & BFD_PLUGIN) != 0))
7137 continue;
7138
7139 roff = irel->r_offset;
7140
7141 /* If the branch is in range, no need to do anything. */
7142 if (tsec != bfd_und_section_ptr
7143 && (!bfd_link_relocatable (link_info)
7144 /* A relocatable link may have sections moved during
7145 final link, so do not presume they remain in range. */
7146 || tsec->output_section == isec->output_section))
7147 {
7148 bfd_vma symaddr, reladdr;
7149
7150 symaddr = tsec->output_section->vma + tsec->output_offset + toff;
7151 reladdr = isec->output_section->vma + isec->output_offset + roff;
7152 if (symaddr - reladdr + max_branch_offset
7153 < 2 * max_branch_offset)
7154 continue;
7155 }
7156
7157 /* Look for an existing fixup to this address. */
7158 for (f = branch_fixups; f ; f = f->next)
7159 if (f->tsec == tsec && f->toff == toff)
7160 break;
7161
7162 if (f == NULL)
7163 {
7164 size_t size;
7165 unsigned long stub_rtype;
7166
7167 val = trampoff - roff;
7168 if (val >= max_branch_offset)
7169 /* Oh dear, we can't reach a trampoline. Don't try to add
7170 one. We'll report an error later. */
7171 continue;
7172
7173 if (bfd_link_pic (link_info))
7174 {
7175 size = 4 * ARRAY_SIZE (shared_stub_entry);
7176 insn_offset = 12;
7177 }
7178 else
7179 {
7180 size = 4 * ARRAY_SIZE (stub_entry);
7181 insn_offset = 0;
7182 }
7183 stub_rtype = R_PPC_RELAX;
7184 if (tsec == htab->elf.splt
7185 || tsec == htab->glink)
7186 {
7187 stub_rtype = R_PPC_RELAX_PLT;
7188 if (r_type == R_PPC_PLTREL24)
7189 stub_rtype = R_PPC_RELAX_PLTREL24;
7190 }
7191
7192 /* Hijack the old relocation. Since we need two
7193 relocations for this use a "composite" reloc. */
7194 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
7195 stub_rtype);
7196 irel->r_offset = trampoff + insn_offset;
7197 if (r_type == R_PPC_PLTREL24
7198 && stub_rtype != R_PPC_RELAX_PLTREL24)
7199 irel->r_addend = 0;
7200
7201 /* Record the fixup so we don't do it again this section. */
7202 f = bfd_malloc (sizeof (*f));
7203 f->next = branch_fixups;
7204 f->tsec = tsec;
7205 f->toff = toff;
7206 f->trampoff = trampoff;
7207 branch_fixups = f;
7208
7209 trampoff += size;
7210 changes++;
7211 }
7212 else
7213 {
7214 val = f->trampoff - roff;
7215 if (val >= max_branch_offset)
7216 continue;
7217
7218 /* Nop out the reloc, since we're finalizing things here. */
7219 irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
7220 }
7221
7222 /* Get the section contents. */
7223 if (contents == NULL)
7224 {
7225 /* Get cached copy if it exists. */
7226 if (elf_section_data (isec)->this_hdr.contents != NULL)
7227 contents = elf_section_data (isec)->this_hdr.contents;
7228 /* Go get them off disk. */
7229 else if (!bfd_malloc_and_get_section (abfd, isec, &contents))
7230 goto error_return;
7231 }
7232
7233 /* Fix up the existing branch to hit the trampoline. */
7234 hit_addr = contents + roff;
7235 switch (r_type)
7236 {
7237 case R_PPC_REL24:
7238 case R_PPC_LOCAL24PC:
7239 case R_PPC_PLTREL24:
7240 t0 = bfd_get_32 (abfd, hit_addr);
7241 t0 &= ~0x3fffffc;
7242 t0 |= val & 0x3fffffc;
7243 bfd_put_32 (abfd, t0, hit_addr);
7244 break;
7245
7246 case R_PPC_REL14:
7247 case R_PPC_REL14_BRTAKEN:
7248 case R_PPC_REL14_BRNTAKEN:
7249 t0 = bfd_get_32 (abfd, hit_addr);
7250 t0 &= ~0xfffc;
7251 t0 |= val & 0xfffc;
7252 bfd_put_32 (abfd, t0, hit_addr);
7253 break;
7254 }
7255 }
7256
7257 while (branch_fixups != NULL)
7258 {
7259 struct one_branch_fixup *f = branch_fixups;
7260 branch_fixups = branch_fixups->next;
7261 free (f);
7262 }
7263 }
7264
7265 workaround_change = FALSE;
7266 newsize = trampoff;
7267 if (htab->params->ppc476_workaround
7268 && (!bfd_link_relocatable (link_info)
7269 || isec->output_section->alignment_power >= htab->params->pagesize_p2))
7270 {
7271 bfd_vma addr, end_addr;
7272 unsigned int crossings;
7273 bfd_vma pagesize = (bfd_vma) 1 << htab->params->pagesize_p2;
7274
7275 addr = isec->output_section->vma + isec->output_offset;
7276 end_addr = addr + trampoff;
7277 addr &= -pagesize;
7278 crossings = ((end_addr & -pagesize) - addr) >> htab->params->pagesize_p2;
7279 if (crossings != 0)
7280 {
7281 /* Keep space aligned, to ensure the patch code itself does
7282 not cross a page. Don't decrease size calculated on a
7283 previous pass as otherwise we might never settle on a layout. */
7284 newsize = 15 - ((end_addr - 1) & 15);
7285 newsize += crossings * 16;
7286 if (relax_info->workaround_size < newsize)
7287 {
7288 relax_info->workaround_size = newsize;
7289 workaround_change = TRUE;
7290 }
7291 /* Ensure relocate_section is called. */
7292 isec->flags |= SEC_RELOC;
7293 }
7294 newsize = trampoff + relax_info->workaround_size;
7295 }
7296
7297 if (htab->params->pic_fixup > 0)
7298 {
7299 picfixup_size -= relax_info->picfixup_size;
7300 if (picfixup_size != 0)
7301 relax_info->picfixup_size += picfixup_size;
7302 newsize += relax_info->picfixup_size;
7303 }
7304
7305 if (changes != 0 || picfixup_size != 0 || workaround_change)
7306 isec->size = newsize;
7307
7308 if (isymbuf != NULL
7309 && symtab_hdr->contents != (unsigned char *) isymbuf)
7310 {
7311 if (! link_info->keep_memory)
7312 free (isymbuf);
7313 else
7314 {
7315 /* Cache the symbols for elf_link_input_bfd. */
7316 symtab_hdr->contents = (unsigned char *) isymbuf;
7317 }
7318 }
7319
7320 if (contents != NULL
7321 && elf_section_data (isec)->this_hdr.contents != contents)
7322 {
7323 if (!changes && !link_info->keep_memory)
7324 free (contents);
7325 else
7326 {
7327 /* Cache the section contents for elf_link_input_bfd. */
7328 elf_section_data (isec)->this_hdr.contents = contents;
7329 }
7330 }
7331
7332 changes += picfixup_size;
7333 if (changes != 0)
7334 {
7335 /* Append sufficient NOP relocs so we can write out relocation
7336 information for the trampolines. */
7337 Elf_Internal_Shdr *rel_hdr;
7338 Elf_Internal_Rela *new_relocs = bfd_malloc ((changes + isec->reloc_count)
7339 * sizeof (*new_relocs));
7340 unsigned ix;
7341
7342 if (!new_relocs)
7343 goto error_return;
7344 memcpy (new_relocs, internal_relocs,
7345 isec->reloc_count * sizeof (*new_relocs));
7346 for (ix = changes; ix--;)
7347 {
7348 irel = new_relocs + ix + isec->reloc_count;
7349
7350 irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
7351 }
7352 if (internal_relocs != elf_section_data (isec)->relocs)
7353 free (internal_relocs);
7354 elf_section_data (isec)->relocs = new_relocs;
7355 isec->reloc_count += changes;
7356 rel_hdr = _bfd_elf_single_rel_hdr (isec);
7357 rel_hdr->sh_size += changes * rel_hdr->sh_entsize;
7358 }
7359 else if (internal_relocs != NULL
7360 && elf_section_data (isec)->relocs != internal_relocs)
7361 free (internal_relocs);
7362
7363 *again = changes != 0 || workaround_change;
7364 return TRUE;
7365
7366 error_return:
7367 while (branch_fixups != NULL)
7368 {
7369 struct one_branch_fixup *f = branch_fixups;
7370 branch_fixups = branch_fixups->next;
7371 free (f);
7372 }
7373 if (isymbuf != NULL && (unsigned char *) isymbuf != symtab_hdr->contents)
7374 free (isymbuf);
7375 if (contents != NULL
7376 && elf_section_data (isec)->this_hdr.contents != contents)
7377 free (contents);
7378 if (internal_relocs != NULL
7379 && elf_section_data (isec)->relocs != internal_relocs)
7380 free (internal_relocs);
7381 return FALSE;
7382 }
7383 \f
7384 /* What to do when ld finds relocations against symbols defined in
7385 discarded sections. */
7386
7387 static unsigned int
7388 ppc_elf_action_discarded (asection *sec)
7389 {
7390 if (strcmp (".fixup", sec->name) == 0)
7391 return 0;
7392
7393 if (strcmp (".got2", sec->name) == 0)
7394 return 0;
7395
7396 return _bfd_elf_default_action_discarded (sec);
7397 }
7398 \f
7399 /* Fill in the address for a pointer generated in a linker section. */
7400
7401 static bfd_vma
7402 elf_finish_pointer_linker_section (bfd *input_bfd,
7403 elf_linker_section_t *lsect,
7404 struct elf_link_hash_entry *h,
7405 bfd_vma relocation,
7406 const Elf_Internal_Rela *rel)
7407 {
7408 elf_linker_section_pointers_t *linker_section_ptr;
7409
7410 BFD_ASSERT (lsect != NULL);
7411
7412 if (h != NULL)
7413 {
7414 /* Handle global symbol. */
7415 struct ppc_elf_link_hash_entry *eh;
7416
7417 eh = (struct ppc_elf_link_hash_entry *) h;
7418 BFD_ASSERT (eh->elf.def_regular);
7419 linker_section_ptr = eh->linker_section_pointer;
7420 }
7421 else
7422 {
7423 /* Handle local symbol. */
7424 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
7425
7426 BFD_ASSERT (is_ppc_elf (input_bfd));
7427 BFD_ASSERT (elf_local_ptr_offsets (input_bfd) != NULL);
7428 linker_section_ptr = elf_local_ptr_offsets (input_bfd)[r_symndx];
7429 }
7430
7431 linker_section_ptr = elf_find_pointer_linker_section (linker_section_ptr,
7432 rel->r_addend,
7433 lsect);
7434 BFD_ASSERT (linker_section_ptr != NULL);
7435
7436 /* Offset will always be a multiple of four, so use the bottom bit
7437 as a "written" flag. */
7438 if ((linker_section_ptr->offset & 1) == 0)
7439 {
7440 bfd_put_32 (lsect->section->owner,
7441 relocation + linker_section_ptr->addend,
7442 lsect->section->contents + linker_section_ptr->offset);
7443 linker_section_ptr->offset += 1;
7444 }
7445
7446 relocation = (lsect->section->output_section->vma
7447 + lsect->section->output_offset
7448 + linker_section_ptr->offset - 1
7449 - SYM_VAL (lsect->sym));
7450
7451 #ifdef DEBUG
7452 fprintf (stderr,
7453 "Finish pointer in linker section %s, offset = %ld (0x%lx)\n",
7454 lsect->name, (long) relocation, (long) relocation);
7455 #endif
7456
7457 return relocation;
7458 }
7459
7460 #define PPC_LO(v) ((v) & 0xffff)
7461 #define PPC_HI(v) (((v) >> 16) & 0xffff)
7462 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
7463
7464 static void
7465 write_glink_stub (struct elf_link_hash_entry *h, struct plt_entry *ent,
7466 asection *plt_sec, unsigned char *p,
7467 struct bfd_link_info *info)
7468 {
7469 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
7470 bfd *output_bfd = info->output_bfd;
7471 bfd_vma plt;
7472 unsigned char *end = p + GLINK_ENTRY_SIZE (htab, h);
7473
7474 if (h != NULL
7475 && h == htab->tls_get_addr
7476 && !htab->params->no_tls_get_addr_opt)
7477 {
7478 bfd_put_32 (output_bfd, LWZ_11_3, p);
7479 p += 4;
7480 bfd_put_32 (output_bfd, LWZ_12_3 + 4, p);
7481 p += 4;
7482 bfd_put_32 (output_bfd, MR_0_3, p);
7483 p += 4;
7484 bfd_put_32 (output_bfd, CMPWI_11_0, p);
7485 p += 4;
7486 bfd_put_32 (output_bfd, ADD_3_12_2, p);
7487 p += 4;
7488 bfd_put_32 (output_bfd, BEQLR, p);
7489 p += 4;
7490 bfd_put_32 (output_bfd, MR_3_0, p);
7491 p += 4;
7492 bfd_put_32 (output_bfd, NOP, p);
7493 p += 4;
7494 }
7495
7496 plt = ((ent->plt.offset & ~1)
7497 + plt_sec->output_section->vma
7498 + plt_sec->output_offset);
7499
7500 if (bfd_link_pic (info))
7501 {
7502 bfd_vma got = 0;
7503
7504 if (ent->addend >= 32768)
7505 got = (ent->addend
7506 + ent->sec->output_section->vma
7507 + ent->sec->output_offset);
7508 else if (htab->elf.hgot != NULL)
7509 got = SYM_VAL (htab->elf.hgot);
7510
7511 plt -= got;
7512
7513 if (plt + 0x8000 < 0x10000)
7514 bfd_put_32 (output_bfd, LWZ_11_30 + PPC_LO (plt), p);
7515 else
7516 {
7517 bfd_put_32 (output_bfd, ADDIS_11_30 + PPC_HA (plt), p);
7518 p += 4;
7519 bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
7520 }
7521 }
7522 else
7523 {
7524 bfd_put_32 (output_bfd, LIS_11 + PPC_HA (plt), p);
7525 p += 4;
7526 bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
7527 }
7528 p += 4;
7529 bfd_put_32 (output_bfd, MTCTR_11, p);
7530 p += 4;
7531 bfd_put_32 (output_bfd, BCTR, p);
7532 p += 4;
7533 while (p < end)
7534 {
7535 bfd_put_32 (output_bfd, htab->params->ppc476_workaround ? BA : NOP, p);
7536 p += 4;
7537 }
7538 }
7539
7540 /* Return true if symbol is defined statically. */
7541
7542 static bfd_boolean
7543 is_static_defined (struct elf_link_hash_entry *h)
7544 {
7545 return ((h->root.type == bfd_link_hash_defined
7546 || h->root.type == bfd_link_hash_defweak)
7547 && h->root.u.def.section != NULL
7548 && h->root.u.def.section->output_section != NULL);
7549 }
7550
7551 /* If INSN is an opcode that may be used with an @tls operand, return
7552 the transformed insn for TLS optimisation, otherwise return 0. If
7553 REG is non-zero only match an insn with RB or RA equal to REG. */
7554
7555 unsigned int
7556 _bfd_elf_ppc_at_tls_transform (unsigned int insn, unsigned int reg)
7557 {
7558 unsigned int rtra;
7559
7560 if ((insn & (0x3f << 26)) != 31 << 26)
7561 return 0;
7562
7563 if (reg == 0 || ((insn >> 11) & 0x1f) == reg)
7564 rtra = insn & ((1 << 26) - (1 << 16));
7565 else if (((insn >> 16) & 0x1f) == reg)
7566 rtra = (insn & (0x1f << 21)) | ((insn & (0x1f << 11)) << 5);
7567 else
7568 return 0;
7569
7570 if ((insn & (0x3ff << 1)) == 266 << 1)
7571 /* add -> addi. */
7572 insn = 14 << 26;
7573 else if ((insn & (0x1f << 1)) == 23 << 1
7574 && ((insn & (0x1f << 6)) < 14 << 6
7575 || ((insn & (0x1f << 6)) >= 16 << 6
7576 && (insn & (0x1f << 6)) < 24 << 6)))
7577 /* load and store indexed -> dform. */
7578 insn = (32 | ((insn >> 6) & 0x1f)) << 26;
7579 else if ((insn & (((0x1a << 5) | 0x1f) << 1)) == 21 << 1)
7580 /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
7581 insn = ((58 | ((insn >> 6) & 4)) << 26) | ((insn >> 6) & 1);
7582 else if ((insn & (((0x1f << 5) | 0x1f) << 1)) == 341 << 1)
7583 /* lwax -> lwa. */
7584 insn = (58 << 26) | 2;
7585 else
7586 return 0;
7587 insn |= rtra;
7588 return insn;
7589 }
7590
7591 /* If INSN is an opcode that may be used with an @tprel operand, return
7592 the transformed insn for an undefined weak symbol, ie. with the
7593 thread pointer REG operand removed. Otherwise return 0. */
7594
7595 unsigned int
7596 _bfd_elf_ppc_at_tprel_transform (unsigned int insn, unsigned int reg)
7597 {
7598 if ((insn & (0x1f << 16)) == reg << 16
7599 && ((insn & (0x3f << 26)) == 14u << 26 /* addi */
7600 || (insn & (0x3f << 26)) == 15u << 26 /* addis */
7601 || (insn & (0x3f << 26)) == 32u << 26 /* lwz */
7602 || (insn & (0x3f << 26)) == 34u << 26 /* lbz */
7603 || (insn & (0x3f << 26)) == 36u << 26 /* stw */
7604 || (insn & (0x3f << 26)) == 38u << 26 /* stb */
7605 || (insn & (0x3f << 26)) == 40u << 26 /* lhz */
7606 || (insn & (0x3f << 26)) == 42u << 26 /* lha */
7607 || (insn & (0x3f << 26)) == 44u << 26 /* sth */
7608 || (insn & (0x3f << 26)) == 46u << 26 /* lmw */
7609 || (insn & (0x3f << 26)) == 47u << 26 /* stmw */
7610 || (insn & (0x3f << 26)) == 48u << 26 /* lfs */
7611 || (insn & (0x3f << 26)) == 50u << 26 /* lfd */
7612 || (insn & (0x3f << 26)) == 52u << 26 /* stfs */
7613 || (insn & (0x3f << 26)) == 54u << 26 /* stfd */
7614 || ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
7615 && (insn & 3) != 1)
7616 || ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */
7617 && ((insn & 3) == 0 || (insn & 3) == 3))))
7618 {
7619 insn &= ~(0x1f << 16);
7620 }
7621 else if ((insn & (0x1f << 21)) == reg << 21
7622 && ((insn & (0x3e << 26)) == 24u << 26 /* ori, oris */
7623 || (insn & (0x3e << 26)) == 26u << 26 /* xori,xoris */
7624 || (insn & (0x3e << 26)) == 28u << 26 /* andi,andis */))
7625 {
7626 insn &= ~(0x1f << 21);
7627 insn |= (insn & (0x1f << 16)) << 5;
7628 if ((insn & (0x3e << 26)) == 26 << 26 /* xori,xoris */)
7629 insn -= 2 >> 26; /* convert to ori,oris */
7630 }
7631 else
7632 insn = 0;
7633 return insn;
7634 }
7635
7636 static bfd_boolean
7637 is_insn_ds_form (unsigned int insn)
7638 {
7639 return ((insn & (0x3f << 26)) == 58u << 26 /* ld,ldu,lwa */
7640 || (insn & (0x3f << 26)) == 62u << 26 /* std,stdu,stq */
7641 || (insn & (0x3f << 26)) == 57u << 26 /* lfdp */
7642 || (insn & (0x3f << 26)) == 61u << 26 /* stfdp */);
7643 }
7644
7645 static bfd_boolean
7646 is_insn_dq_form (unsigned int insn)
7647 {
7648 return ((insn & (0x3f << 26)) == 56u << 26 /* lq */
7649 || ((insn & (0x3f << 26)) == (61u << 26) /* lxv, stxv */
7650 && (insn & 3) == 1));
7651 }
7652
7653 /* The RELOCATE_SECTION function is called by the ELF backend linker
7654 to handle the relocations for a section.
7655
7656 The relocs are always passed as Rela structures; if the section
7657 actually uses Rel structures, the r_addend field will always be
7658 zero.
7659
7660 This function is responsible for adjust the section contents as
7661 necessary, and (if using Rela relocs and generating a
7662 relocatable output file) adjusting the reloc addend as
7663 necessary.
7664
7665 This function does not have to worry about setting the reloc
7666 address or the reloc symbol index.
7667
7668 LOCAL_SYMS is a pointer to the swapped in local symbols.
7669
7670 LOCAL_SECTIONS is an array giving the section in the input file
7671 corresponding to the st_shndx field of each local symbol.
7672
7673 The global hash table entry for the global symbols can be found
7674 via elf_sym_hashes (input_bfd).
7675
7676 When generating relocatable output, this function must handle
7677 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
7678 going to be the section symbol corresponding to the output
7679 section, which means that the addend must be adjusted
7680 accordingly. */
7681
7682 static bfd_boolean
7683 ppc_elf_relocate_section (bfd *output_bfd,
7684 struct bfd_link_info *info,
7685 bfd *input_bfd,
7686 asection *input_section,
7687 bfd_byte *contents,
7688 Elf_Internal_Rela *relocs,
7689 Elf_Internal_Sym *local_syms,
7690 asection **local_sections)
7691 {
7692 Elf_Internal_Shdr *symtab_hdr;
7693 struct elf_link_hash_entry **sym_hashes;
7694 struct ppc_elf_link_hash_table *htab;
7695 Elf_Internal_Rela *rel;
7696 Elf_Internal_Rela *wrel;
7697 Elf_Internal_Rela *relend;
7698 Elf_Internal_Rela outrel;
7699 asection *got2;
7700 bfd_vma *local_got_offsets;
7701 bfd_boolean ret = TRUE;
7702 bfd_vma d_offset = (bfd_big_endian (input_bfd) ? 2 : 0);
7703 bfd_boolean is_vxworks_tls;
7704 unsigned int picfixup_size = 0;
7705 struct ppc_elf_relax_info *relax_info = NULL;
7706
7707 #ifdef DEBUG
7708 _bfd_error_handler ("ppc_elf_relocate_section called for %pB section %pA, "
7709 "%ld relocations%s",
7710 input_bfd, input_section,
7711 (long) input_section->reloc_count,
7712 (bfd_link_relocatable (info)) ? " (relocatable)" : "");
7713 #endif
7714
7715 got2 = bfd_get_section_by_name (input_bfd, ".got2");
7716
7717 /* Initialize howto table if not already done. */
7718 if (!ppc_elf_howto_table[R_PPC_ADDR32])
7719 ppc_elf_howto_init ();
7720
7721 htab = ppc_elf_hash_table (info);
7722 local_got_offsets = elf_local_got_offsets (input_bfd);
7723 symtab_hdr = &elf_symtab_hdr (input_bfd);
7724 sym_hashes = elf_sym_hashes (input_bfd);
7725 /* We have to handle relocations in vxworks .tls_vars sections
7726 specially, because the dynamic loader is 'weird'. */
7727 is_vxworks_tls = (htab->is_vxworks && bfd_link_pic (info)
7728 && !strcmp (input_section->output_section->name,
7729 ".tls_vars"));
7730 if (input_section->sec_info_type == SEC_INFO_TYPE_TARGET)
7731 relax_info = elf_section_data (input_section)->sec_info;
7732 rel = wrel = relocs;
7733 relend = relocs + input_section->reloc_count;
7734 for (; rel < relend; wrel++, rel++)
7735 {
7736 enum elf_ppc_reloc_type r_type;
7737 bfd_vma addend;
7738 bfd_reloc_status_type r;
7739 Elf_Internal_Sym *sym;
7740 asection *sec;
7741 struct elf_link_hash_entry *h;
7742 const char *sym_name;
7743 reloc_howto_type *howto;
7744 unsigned long r_symndx;
7745 bfd_vma relocation;
7746 bfd_vma branch_bit, from;
7747 bfd_boolean unresolved_reloc;
7748 bfd_boolean warned;
7749 unsigned int tls_type, tls_mask, tls_gd;
7750 struct plt_entry **ifunc;
7751 struct reloc_howto_struct alt_howto;
7752
7753 again:
7754 r_type = ELF32_R_TYPE (rel->r_info);
7755 sym = NULL;
7756 sec = NULL;
7757 h = NULL;
7758 unresolved_reloc = FALSE;
7759 warned = FALSE;
7760 r_symndx = ELF32_R_SYM (rel->r_info);
7761
7762 if (r_symndx < symtab_hdr->sh_info)
7763 {
7764 sym = local_syms + r_symndx;
7765 sec = local_sections[r_symndx];
7766 sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
7767
7768 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
7769 }
7770 else
7771 {
7772 bfd_boolean ignored;
7773
7774 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
7775 r_symndx, symtab_hdr, sym_hashes,
7776 h, sec, relocation,
7777 unresolved_reloc, warned, ignored);
7778
7779 sym_name = h->root.root.string;
7780 }
7781
7782 if (sec != NULL && discarded_section (sec))
7783 {
7784 /* For relocs against symbols from removed linkonce sections,
7785 or sections discarded by a linker script, we just want the
7786 section contents zeroed. Avoid any special processing. */
7787 howto = NULL;
7788 if (r_type < R_PPC_max)
7789 howto = ppc_elf_howto_table[r_type];
7790
7791 _bfd_clear_contents (howto, input_bfd, input_section,
7792 contents + rel->r_offset);
7793 wrel->r_offset = rel->r_offset;
7794 wrel->r_info = 0;
7795 wrel->r_addend = 0;
7796
7797 /* For ld -r, remove relocations in debug sections against
7798 symbols defined in discarded sections. Not done for
7799 non-debug to preserve relocs in .eh_frame which the
7800 eh_frame editing code expects to be present. */
7801 if (bfd_link_relocatable (info)
7802 && (input_section->flags & SEC_DEBUGGING))
7803 wrel--;
7804
7805 continue;
7806 }
7807
7808 if (bfd_link_relocatable (info))
7809 {
7810 if (got2 != NULL
7811 && r_type == R_PPC_PLTREL24
7812 && rel->r_addend != 0)
7813 {
7814 /* R_PPC_PLTREL24 is rather special. If non-zero, the
7815 addend specifies the GOT pointer offset within .got2. */
7816 rel->r_addend += got2->output_offset;
7817 }
7818 if (r_type != R_PPC_RELAX_PLT
7819 && r_type != R_PPC_RELAX_PLTREL24
7820 && r_type != R_PPC_RELAX)
7821 goto copy_reloc;
7822 }
7823
7824 /* TLS optimizations. Replace instruction sequences and relocs
7825 based on information we collected in tls_optimize. We edit
7826 RELOCS so that --emit-relocs will output something sensible
7827 for the final instruction stream. */
7828 tls_mask = 0;
7829 tls_gd = 0;
7830 if (h != NULL)
7831 tls_mask = ((struct ppc_elf_link_hash_entry *) h)->tls_mask;
7832 else if (local_got_offsets != NULL)
7833 {
7834 struct plt_entry **local_plt;
7835 char *lgot_masks;
7836 local_plt
7837 = (struct plt_entry **) (local_got_offsets + symtab_hdr->sh_info);
7838 lgot_masks = (char *) (local_plt + symtab_hdr->sh_info);
7839 tls_mask = lgot_masks[r_symndx];
7840 }
7841
7842 /* Ensure reloc mapping code below stays sane. */
7843 if ((R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TLSGD16 & 3)
7844 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TLSGD16_LO & 3)
7845 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TLSGD16_HI & 3)
7846 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TLSGD16_HA & 3)
7847 || (R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TPREL16 & 3)
7848 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TPREL16_LO & 3)
7849 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TPREL16_HI & 3)
7850 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TPREL16_HA & 3))
7851 abort ();
7852 switch (r_type)
7853 {
7854 default:
7855 break;
7856
7857 case R_PPC_GOT_TPREL16:
7858 case R_PPC_GOT_TPREL16_LO:
7859 if ((tls_mask & TLS_TLS) != 0
7860 && (tls_mask & TLS_TPREL) == 0)
7861 {
7862 bfd_vma insn;
7863
7864 insn = bfd_get_32 (input_bfd,
7865 contents + rel->r_offset - d_offset);
7866 insn &= 31 << 21;
7867 insn |= 0x3c020000; /* addis 0,2,0 */
7868 bfd_put_32 (input_bfd, insn,
7869 contents + rel->r_offset - d_offset);
7870 r_type = R_PPC_TPREL16_HA;
7871 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7872 }
7873 break;
7874
7875 case R_PPC_TLS:
7876 if ((tls_mask & TLS_TLS) != 0
7877 && (tls_mask & TLS_TPREL) == 0)
7878 {
7879 bfd_vma insn;
7880
7881 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
7882 insn = _bfd_elf_ppc_at_tls_transform (insn, 2);
7883 if (insn == 0)
7884 abort ();
7885 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
7886 r_type = R_PPC_TPREL16_LO;
7887 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7888
7889 /* Was PPC_TLS which sits on insn boundary, now
7890 PPC_TPREL16_LO which is at low-order half-word. */
7891 rel->r_offset += d_offset;
7892 }
7893 break;
7894
7895 case R_PPC_GOT_TLSGD16_HI:
7896 case R_PPC_GOT_TLSGD16_HA:
7897 tls_gd = TLS_TPRELGD;
7898 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
7899 goto tls_gdld_hi;
7900 break;
7901
7902 case R_PPC_GOT_TLSLD16_HI:
7903 case R_PPC_GOT_TLSLD16_HA:
7904 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
7905 {
7906 tls_gdld_hi:
7907 if ((tls_mask & tls_gd) != 0)
7908 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
7909 + R_PPC_GOT_TPREL16);
7910 else
7911 {
7912 rel->r_offset -= d_offset;
7913 bfd_put_32 (input_bfd, NOP, contents + rel->r_offset);
7914 r_type = R_PPC_NONE;
7915 }
7916 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7917 }
7918 break;
7919
7920 case R_PPC_GOT_TLSGD16:
7921 case R_PPC_GOT_TLSGD16_LO:
7922 tls_gd = TLS_TPRELGD;
7923 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
7924 goto tls_ldgd_opt;
7925 break;
7926
7927 case R_PPC_GOT_TLSLD16:
7928 case R_PPC_GOT_TLSLD16_LO:
7929 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
7930 {
7931 unsigned int insn1, insn2;
7932 bfd_vma offset;
7933
7934 tls_ldgd_opt:
7935 offset = (bfd_vma) -1;
7936 /* If not using the newer R_PPC_TLSGD/LD to mark
7937 __tls_get_addr calls, we must trust that the call
7938 stays with its arg setup insns, ie. that the next
7939 reloc is the __tls_get_addr call associated with
7940 the current reloc. Edit both insns. */
7941 if (input_section->has_tls_get_addr_call
7942 && rel + 1 < relend
7943 && branch_reloc_hash_match (input_bfd, rel + 1,
7944 htab->tls_get_addr))
7945 offset = rel[1].r_offset;
7946 /* We read the low GOT_TLS insn because we need to keep
7947 the destination reg. It may be something other than
7948 the usual r3, and moved to r3 before the call by
7949 intervening code. */
7950 insn1 = bfd_get_32 (input_bfd,
7951 contents + rel->r_offset - d_offset);
7952 if ((tls_mask & tls_gd) != 0)
7953 {
7954 /* IE */
7955 insn1 &= (0x1f << 21) | (0x1f << 16);
7956 insn1 |= 32 << 26; /* lwz */
7957 if (offset != (bfd_vma) -1)
7958 {
7959 rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
7960 insn2 = 0x7c631214; /* add 3,3,2 */
7961 bfd_put_32 (input_bfd, insn2, contents + offset);
7962 }
7963 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
7964 + R_PPC_GOT_TPREL16);
7965 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7966 }
7967 else
7968 {
7969 /* LE */
7970 insn1 &= 0x1f << 21;
7971 insn1 |= 0x3c020000; /* addis r,2,0 */
7972 if (tls_gd == 0)
7973 {
7974 /* Was an LD reloc. */
7975 for (r_symndx = 0;
7976 r_symndx < symtab_hdr->sh_info;
7977 r_symndx++)
7978 if (local_sections[r_symndx] == sec)
7979 break;
7980 if (r_symndx >= symtab_hdr->sh_info)
7981 r_symndx = STN_UNDEF;
7982 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
7983 if (r_symndx != STN_UNDEF)
7984 rel->r_addend -= (local_syms[r_symndx].st_value
7985 + sec->output_offset
7986 + sec->output_section->vma);
7987 }
7988 r_type = R_PPC_TPREL16_HA;
7989 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7990 if (offset != (bfd_vma) -1)
7991 {
7992 rel[1].r_info = ELF32_R_INFO (r_symndx, R_PPC_TPREL16_LO);
7993 rel[1].r_offset = offset + d_offset;
7994 rel[1].r_addend = rel->r_addend;
7995 insn2 = 0x38630000; /* addi 3,3,0 */
7996 bfd_put_32 (input_bfd, insn2, contents + offset);
7997 }
7998 }
7999 bfd_put_32 (input_bfd, insn1,
8000 contents + rel->r_offset - d_offset);
8001 if (tls_gd == 0)
8002 {
8003 /* We changed the symbol on an LD reloc. Start over
8004 in order to get h, sym, sec etc. right. */
8005 goto again;
8006 }
8007 }
8008 break;
8009
8010 case R_PPC_TLSGD:
8011 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0
8012 && rel + 1 < relend)
8013 {
8014 unsigned int insn2;
8015 bfd_vma offset = rel->r_offset;
8016
8017 if ((tls_mask & TLS_TPRELGD) != 0)
8018 {
8019 /* IE */
8020 r_type = R_PPC_NONE;
8021 insn2 = 0x7c631214; /* add 3,3,2 */
8022 }
8023 else
8024 {
8025 /* LE */
8026 r_type = R_PPC_TPREL16_LO;
8027 rel->r_offset += d_offset;
8028 insn2 = 0x38630000; /* addi 3,3,0 */
8029 }
8030 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
8031 bfd_put_32 (input_bfd, insn2, contents + offset);
8032 /* Zap the reloc on the _tls_get_addr call too. */
8033 BFD_ASSERT (offset == rel[1].r_offset);
8034 rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
8035 }
8036 break;
8037
8038 case R_PPC_TLSLD:
8039 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0
8040 && rel + 1 < relend)
8041 {
8042 unsigned int insn2;
8043
8044 for (r_symndx = 0;
8045 r_symndx < symtab_hdr->sh_info;
8046 r_symndx++)
8047 if (local_sections[r_symndx] == sec)
8048 break;
8049 if (r_symndx >= symtab_hdr->sh_info)
8050 r_symndx = STN_UNDEF;
8051 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
8052 if (r_symndx != STN_UNDEF)
8053 rel->r_addend -= (local_syms[r_symndx].st_value
8054 + sec->output_offset
8055 + sec->output_section->vma);
8056
8057 rel->r_info = ELF32_R_INFO (r_symndx, R_PPC_TPREL16_LO);
8058 rel->r_offset += d_offset;
8059 insn2 = 0x38630000; /* addi 3,3,0 */
8060 bfd_put_32 (input_bfd, insn2,
8061 contents + rel->r_offset - d_offset);
8062 /* Zap the reloc on the _tls_get_addr call too. */
8063 BFD_ASSERT (rel->r_offset - d_offset == rel[1].r_offset);
8064 rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
8065 goto again;
8066 }
8067 break;
8068 }
8069
8070 /* Handle other relocations that tweak non-addend part of insn. */
8071 branch_bit = 0;
8072 switch (r_type)
8073 {
8074 default:
8075 break;
8076
8077 /* Branch taken prediction relocations. */
8078 case R_PPC_ADDR14_BRTAKEN:
8079 case R_PPC_REL14_BRTAKEN:
8080 branch_bit = BRANCH_PREDICT_BIT;
8081 /* Fall through. */
8082
8083 /* Branch not taken prediction relocations. */
8084 case R_PPC_ADDR14_BRNTAKEN:
8085 case R_PPC_REL14_BRNTAKEN:
8086 {
8087 bfd_vma insn;
8088
8089 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
8090 insn &= ~BRANCH_PREDICT_BIT;
8091 insn |= branch_bit;
8092
8093 from = (rel->r_offset
8094 + input_section->output_offset
8095 + input_section->output_section->vma);
8096
8097 /* Invert 'y' bit if not the default. */
8098 if ((bfd_signed_vma) (relocation + rel->r_addend - from) < 0)
8099 insn ^= BRANCH_PREDICT_BIT;
8100
8101 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
8102 break;
8103 }
8104 }
8105
8106 if (ELIMINATE_COPY_RELOCS
8107 && h != NULL
8108 && !h->def_regular
8109 && h->protected_def
8110 && ppc_elf_hash_entry (h)->has_addr16_ha
8111 && ppc_elf_hash_entry (h)->has_addr16_lo
8112 && htab->params->pic_fixup > 0)
8113 {
8114 /* Convert lis;addi or lis;load/store accessing a protected
8115 variable defined in a shared library to PIC. */
8116 unsigned int insn;
8117
8118 if (r_type == R_PPC_ADDR16_HA)
8119 {
8120 insn = bfd_get_32 (input_bfd,
8121 contents + rel->r_offset - d_offset);
8122 if ((insn & (0x3f << 26)) == (15u << 26)
8123 && (insn & (0x1f << 16)) == 0 /* lis */)
8124 {
8125 bfd_byte *p;
8126 bfd_vma off;
8127 bfd_vma got_addr;
8128
8129 p = (contents + input_section->size
8130 - relax_info->workaround_size
8131 - relax_info->picfixup_size
8132 + picfixup_size);
8133 off = (p - contents) - (rel->r_offset - d_offset);
8134 if (off > 0x1fffffc || (off & 3) != 0)
8135 info->callbacks->einfo
8136 (_("%H: fixup branch overflow\n"),
8137 input_bfd, input_section, rel->r_offset);
8138
8139 bfd_put_32 (input_bfd, B | off,
8140 contents + rel->r_offset - d_offset);
8141 got_addr = (htab->elf.sgot->output_section->vma
8142 + htab->elf.sgot->output_offset
8143 + (h->got.offset & ~1));
8144 wrel->r_offset = (p - contents) + d_offset;
8145 wrel->r_info = ELF32_R_INFO (0, R_PPC_ADDR16_HA);
8146 wrel->r_addend = got_addr;
8147 insn &= ~0xffff;
8148 insn |= ((unsigned int) (got_addr + 0x8000) >> 16) & 0xffff;
8149 bfd_put_32 (input_bfd, insn, p);
8150
8151 /* Convert lis to lwz, loading address from GOT. */
8152 insn &= ~0xffff;
8153 insn ^= (32u ^ 15u) << 26;
8154 insn |= (insn & (0x1f << 21)) >> 5;
8155 insn |= got_addr & 0xffff;
8156 bfd_put_32 (input_bfd, insn, p + 4);
8157
8158 bfd_put_32 (input_bfd, B | ((-4 - off) & 0x3ffffff), p + 8);
8159 picfixup_size += 12;
8160
8161 /* Use one of the spare relocs, so --emit-relocs
8162 output is reasonable. */
8163 memmove (rel + 1, rel, (relend - rel - 1) * sizeof (*rel));
8164 wrel++, rel++;
8165 rel->r_offset = wrel[-1].r_offset + 4;
8166 rel->r_info = ELF32_R_INFO (0, R_PPC_ADDR16_LO);
8167 rel->r_addend = wrel[-1].r_addend;
8168
8169 /* Continue on as if we had a got reloc, to output
8170 dynamic reloc. */
8171 r_type = R_PPC_GOT16_LO;
8172 }
8173 else
8174 _bfd_error_handler
8175 /* xgettext:c-format */
8176 (_("%pB(%pA+%#" PRIx64 "): error: "
8177 "%s with unexpected instruction %#x"),
8178 input_bfd, input_section, (uint64_t) rel->r_offset,
8179 "R_PPC_ADDR16_HA", insn);
8180 }
8181 else if (r_type == R_PPC_ADDR16_LO)
8182 {
8183 insn = bfd_get_32 (input_bfd,
8184 contents + rel->r_offset - d_offset);
8185 if ((insn & (0x3f << 26)) == 14u << 26 /* addi */
8186 || (insn & (0x3f << 26)) == 32u << 26 /* lwz */
8187 || (insn & (0x3f << 26)) == 34u << 26 /* lbz */
8188 || (insn & (0x3f << 26)) == 36u << 26 /* stw */
8189 || (insn & (0x3f << 26)) == 38u << 26 /* stb */
8190 || (insn & (0x3f << 26)) == 40u << 26 /* lhz */
8191 || (insn & (0x3f << 26)) == 42u << 26 /* lha */
8192 || (insn & (0x3f << 26)) == 44u << 26 /* sth */
8193 || (insn & (0x3f << 26)) == 46u << 26 /* lmw */
8194 || (insn & (0x3f << 26)) == 47u << 26 /* stmw */
8195 || (insn & (0x3f << 26)) == 48u << 26 /* lfs */
8196 || (insn & (0x3f << 26)) == 50u << 26 /* lfd */
8197 || (insn & (0x3f << 26)) == 52u << 26 /* stfs */
8198 || (insn & (0x3f << 26)) == 54u << 26 /* stfd */
8199 || ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
8200 && (insn & 3) != 1)
8201 || ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */
8202 && ((insn & 3) == 0 || (insn & 3) == 3)))
8203 {
8204 /* Arrange to apply the reloc addend, if any. */
8205 relocation = 0;
8206 unresolved_reloc = FALSE;
8207 rel->r_info = ELF32_R_INFO (0, r_type);
8208 }
8209 else
8210 _bfd_error_handler
8211 /* xgettext:c-format */
8212 (_("%pB(%pA+%#" PRIx64 "): error: "
8213 "%s with unexpected instruction %#x"),
8214 input_bfd, input_section, (uint64_t) rel->r_offset,
8215 "R_PPC_ADDR16_LO", insn);
8216 }
8217 }
8218
8219 ifunc = NULL;
8220 if (!htab->is_vxworks)
8221 {
8222 struct plt_entry *ent;
8223
8224 if (h != NULL)
8225 {
8226 if (h->type == STT_GNU_IFUNC)
8227 ifunc = &h->plt.plist;
8228 }
8229 else if (local_got_offsets != NULL
8230 && ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
8231 {
8232 struct plt_entry **local_plt;
8233
8234 local_plt = (struct plt_entry **) (local_got_offsets
8235 + symtab_hdr->sh_info);
8236 ifunc = local_plt + r_symndx;
8237 }
8238
8239 ent = NULL;
8240 if (ifunc != NULL
8241 && (!bfd_link_pic (info)
8242 || is_branch_reloc (r_type)))
8243 {
8244 addend = 0;
8245 if (r_type == R_PPC_PLTREL24 && bfd_link_pic (info))
8246 addend = rel->r_addend;
8247 ent = find_plt_ent (ifunc, got2, addend);
8248 }
8249 if (ent != NULL)
8250 {
8251 if (bfd_link_pic (info)
8252 && ent->sec != got2
8253 && htab->plt_type != PLT_NEW
8254 && (!htab->elf.dynamic_sections_created
8255 || h == NULL
8256 || h->dynindx == -1))
8257 {
8258 /* Uh oh, we are going to create a pic glink stub
8259 for an ifunc (here for h == NULL and later in
8260 finish_dynamic_symbol for h != NULL), and
8261 apparently are using code compiled with
8262 -mbss-plt. The difficulty is that -mbss-plt code
8263 gives no indication via a magic PLTREL24 addend
8264 whether r30 is equal to _GLOBAL_OFFSET_TABLE_ or
8265 is pointing into a .got2 section (and how far
8266 into .got2). */
8267 info->callbacks->einfo
8268 /* xgettext:c-format */
8269 (_("%X%H: unsupported bss-plt -fPIC ifunc %s\n"),
8270 input_bfd, input_section, rel->r_offset, sym_name);
8271 }
8272 if (h == NULL && (ent->plt.offset & 1) == 0)
8273 {
8274 Elf_Internal_Rela rela;
8275 bfd_byte *loc;
8276
8277 rela.r_offset = (htab->elf.iplt->output_section->vma
8278 + htab->elf.iplt->output_offset
8279 + ent->plt.offset);
8280 rela.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
8281 rela.r_addend = relocation;
8282 loc = htab->elf.irelplt->contents;
8283 loc += (htab->elf.irelplt->reloc_count++
8284 * sizeof (Elf32_External_Rela));
8285 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
8286 htab->local_ifunc_resolver = 1;
8287
8288 ent->plt.offset |= 1;
8289 }
8290 if (h == NULL && (ent->glink_offset & 1) == 0)
8291 {
8292 unsigned char *p = ((unsigned char *) htab->glink->contents
8293 + ent->glink_offset);
8294
8295 write_glink_stub (NULL, ent, htab->elf.iplt, p, info);
8296 ent->glink_offset |= 1;
8297 }
8298
8299 unresolved_reloc = FALSE;
8300 if (htab->plt_type == PLT_NEW
8301 || !htab->elf.dynamic_sections_created
8302 || h == NULL
8303 || h->dynindx == -1)
8304 relocation = (htab->glink->output_section->vma
8305 + htab->glink->output_offset
8306 + (ent->glink_offset & ~1));
8307 else
8308 relocation = (htab->elf.splt->output_section->vma
8309 + htab->elf.splt->output_offset
8310 + ent->plt.offset);
8311 }
8312 }
8313
8314 addend = rel->r_addend;
8315 howto = NULL;
8316 if (r_type < R_PPC_max)
8317 howto = ppc_elf_howto_table[r_type];
8318
8319 switch (r_type)
8320 {
8321 default:
8322 break;
8323
8324 case R_PPC_TPREL16_HA:
8325 if (htab->do_tls_opt && relocation + addend + 0x8000 < 0x10000)
8326 {
8327 bfd_byte *p = contents + (rel->r_offset & ~3);
8328 unsigned int insn = bfd_get_32 (input_bfd, p);
8329 if ((insn & ((0x3f << 26) | 0x1f << 16))
8330 != ((15u << 26) | (2 << 16)) /* addis rt,2,imm */)
8331 /* xgettext:c-format */
8332 info->callbacks->minfo
8333 (_("%H: warning: %s unexpected insn %#x.\n"),
8334 input_bfd, input_section, rel->r_offset, howto->name, insn);
8335 else
8336 bfd_put_32 (input_bfd, NOP, p);
8337 }
8338 break;
8339
8340 case R_PPC_TPREL16_LO:
8341 if (htab->do_tls_opt && relocation + addend + 0x8000 < 0x10000)
8342 {
8343 bfd_byte *p = contents + (rel->r_offset & ~3);
8344 unsigned int insn = bfd_get_32 (input_bfd, p);
8345 insn &= ~(0x1f << 16);
8346 insn |= 2 << 16;
8347 bfd_put_32 (input_bfd, insn, p);
8348 }
8349 break;
8350 }
8351
8352 tls_type = 0;
8353 switch (r_type)
8354 {
8355 default:
8356 /* xgettext:c-format */
8357 _bfd_error_handler (_("%pB: %s unsupported"),
8358 input_bfd, howto->name);
8359
8360 bfd_set_error (bfd_error_bad_value);
8361 ret = FALSE;
8362 goto copy_reloc;
8363
8364 case R_PPC_NONE:
8365 case R_PPC_TLS:
8366 case R_PPC_TLSGD:
8367 case R_PPC_TLSLD:
8368 case R_PPC_EMB_MRKREF:
8369 case R_PPC_GNU_VTINHERIT:
8370 case R_PPC_GNU_VTENTRY:
8371 goto copy_reloc;
8372
8373 /* GOT16 relocations. Like an ADDR16 using the symbol's
8374 address in the GOT as relocation value instead of the
8375 symbol's value itself. Also, create a GOT entry for the
8376 symbol and put the symbol value there. */
8377 case R_PPC_GOT_TLSGD16:
8378 case R_PPC_GOT_TLSGD16_LO:
8379 case R_PPC_GOT_TLSGD16_HI:
8380 case R_PPC_GOT_TLSGD16_HA:
8381 tls_type = TLS_TLS | TLS_GD;
8382 goto dogot;
8383
8384 case R_PPC_GOT_TLSLD16:
8385 case R_PPC_GOT_TLSLD16_LO:
8386 case R_PPC_GOT_TLSLD16_HI:
8387 case R_PPC_GOT_TLSLD16_HA:
8388 tls_type = TLS_TLS | TLS_LD;
8389 goto dogot;
8390
8391 case R_PPC_GOT_TPREL16:
8392 case R_PPC_GOT_TPREL16_LO:
8393 case R_PPC_GOT_TPREL16_HI:
8394 case R_PPC_GOT_TPREL16_HA:
8395 tls_type = TLS_TLS | TLS_TPREL;
8396 goto dogot;
8397
8398 case R_PPC_GOT_DTPREL16:
8399 case R_PPC_GOT_DTPREL16_LO:
8400 case R_PPC_GOT_DTPREL16_HI:
8401 case R_PPC_GOT_DTPREL16_HA:
8402 tls_type = TLS_TLS | TLS_DTPREL;
8403 goto dogot;
8404
8405 case R_PPC_GOT16:
8406 case R_PPC_GOT16_LO:
8407 case R_PPC_GOT16_HI:
8408 case R_PPC_GOT16_HA:
8409 tls_mask = 0;
8410 dogot:
8411 {
8412 /* Relocation is to the entry for this symbol in the global
8413 offset table. */
8414 bfd_vma off;
8415 bfd_vma *offp;
8416 unsigned long indx;
8417
8418 if (htab->elf.sgot == NULL)
8419 abort ();
8420
8421 indx = 0;
8422 if (tls_type == (TLS_TLS | TLS_LD)
8423 && (h == NULL
8424 || !h->def_dynamic))
8425 offp = &htab->tlsld_got.offset;
8426 else if (h != NULL)
8427 {
8428 if (!htab->elf.dynamic_sections_created
8429 || h->dynindx == -1
8430 || SYMBOL_REFERENCES_LOCAL (info, h)
8431 || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h))
8432 /* This is actually a static link, or it is a
8433 -Bsymbolic link and the symbol is defined
8434 locally, or the symbol was forced to be local
8435 because of a version file. */
8436 ;
8437 else
8438 {
8439 indx = h->dynindx;
8440 unresolved_reloc = FALSE;
8441 }
8442 offp = &h->got.offset;
8443 }
8444 else
8445 {
8446 if (local_got_offsets == NULL)
8447 abort ();
8448 offp = &local_got_offsets[r_symndx];
8449 }
8450
8451 /* The offset must always be a multiple of 4. We use the
8452 least significant bit to record whether we have already
8453 processed this entry. */
8454 off = *offp;
8455 if ((off & 1) != 0)
8456 off &= ~1;
8457 else
8458 {
8459 unsigned int tls_m = ((tls_mask & TLS_TLS) != 0
8460 ? tls_mask & (TLS_LD | TLS_GD | TLS_DTPREL
8461 | TLS_TPREL | TLS_TPRELGD)
8462 : 0);
8463
8464 if (offp == &htab->tlsld_got.offset)
8465 tls_m = TLS_LD;
8466 else if (h == NULL
8467 || !h->def_dynamic)
8468 tls_m &= ~TLS_LD;
8469
8470 /* We might have multiple got entries for this sym.
8471 Initialize them all. */
8472 do
8473 {
8474 int tls_ty = 0;
8475
8476 if ((tls_m & TLS_LD) != 0)
8477 {
8478 tls_ty = TLS_TLS | TLS_LD;
8479 tls_m &= ~TLS_LD;
8480 }
8481 else if ((tls_m & TLS_GD) != 0)
8482 {
8483 tls_ty = TLS_TLS | TLS_GD;
8484 tls_m &= ~TLS_GD;
8485 }
8486 else if ((tls_m & TLS_DTPREL) != 0)
8487 {
8488 tls_ty = TLS_TLS | TLS_DTPREL;
8489 tls_m &= ~TLS_DTPREL;
8490 }
8491 else if ((tls_m & (TLS_TPREL | TLS_TPRELGD)) != 0)
8492 {
8493 tls_ty = TLS_TLS | TLS_TPREL;
8494 tls_m = 0;
8495 }
8496
8497 /* Generate relocs for the dynamic linker. */
8498 if (indx != 0
8499 || (bfd_link_pic (info)
8500 && (h == NULL
8501 || !UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)
8502 || offp == &htab->tlsld_got.offset)
8503 && !(tls_ty == (TLS_TLS | TLS_TPREL)
8504 && bfd_link_executable (info)
8505 && SYMBOL_REFERENCES_LOCAL (info, h))))
8506 {
8507 asection *rsec = htab->elf.srelgot;
8508 bfd_byte * loc;
8509
8510 if (ifunc != NULL)
8511 {
8512 rsec = htab->elf.irelplt;
8513 if (indx == 0)
8514 htab->local_ifunc_resolver = 1;
8515 else if (is_static_defined (h))
8516 htab->maybe_local_ifunc_resolver = 1;
8517 }
8518 outrel.r_offset = (htab->elf.sgot->output_section->vma
8519 + htab->elf.sgot->output_offset
8520 + off);
8521 outrel.r_addend = 0;
8522 if (tls_ty & (TLS_LD | TLS_GD))
8523 {
8524 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPMOD32);
8525 if (tls_ty == (TLS_TLS | TLS_GD))
8526 {
8527 loc = rsec->contents;
8528 loc += (rsec->reloc_count++
8529 * sizeof (Elf32_External_Rela));
8530 bfd_elf32_swap_reloca_out (output_bfd,
8531 &outrel, loc);
8532 outrel.r_offset += 4;
8533 outrel.r_info
8534 = ELF32_R_INFO (indx, R_PPC_DTPREL32);
8535 }
8536 }
8537 else if (tls_ty == (TLS_TLS | TLS_DTPREL))
8538 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPREL32);
8539 else if (tls_ty == (TLS_TLS | TLS_TPREL))
8540 outrel.r_info = ELF32_R_INFO (indx, R_PPC_TPREL32);
8541 else if (indx != 0)
8542 outrel.r_info = ELF32_R_INFO (indx, R_PPC_GLOB_DAT);
8543 else if (ifunc != NULL)
8544 outrel.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
8545 else
8546 outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
8547 if (indx == 0 && tls_ty != (TLS_TLS | TLS_LD))
8548 {
8549 outrel.r_addend += relocation;
8550 if (tls_ty & (TLS_GD | TLS_DTPREL | TLS_TPREL))
8551 {
8552 if (htab->elf.tls_sec == NULL)
8553 outrel.r_addend = 0;
8554 else
8555 outrel.r_addend -= htab->elf.tls_sec->vma;
8556 }
8557 }
8558 loc = rsec->contents;
8559 loc += (rsec->reloc_count++
8560 * sizeof (Elf32_External_Rela));
8561 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
8562 }
8563
8564 /* Init the .got section contents if we're not
8565 emitting a reloc. */
8566 else
8567 {
8568 bfd_vma value = relocation;
8569
8570 if (tls_ty != 0)
8571 {
8572 if (htab->elf.tls_sec == NULL)
8573 value = 0;
8574 else
8575 {
8576 if (tls_ty & TLS_LD)
8577 value = 0;
8578 else
8579 value -= htab->elf.tls_sec->vma + DTP_OFFSET;
8580 if (tls_ty & TLS_TPREL)
8581 value += DTP_OFFSET - TP_OFFSET;
8582 }
8583
8584 if (tls_ty & (TLS_LD | TLS_GD))
8585 {
8586 bfd_put_32 (input_bfd, value,
8587 htab->elf.sgot->contents + off + 4);
8588 value = 1;
8589 }
8590 }
8591 bfd_put_32 (input_bfd, value,
8592 htab->elf.sgot->contents + off);
8593 }
8594
8595 off += 4;
8596 if (tls_ty & (TLS_LD | TLS_GD))
8597 off += 4;
8598 }
8599 while (tls_m != 0);
8600
8601 off = *offp;
8602 *offp = off | 1;
8603 }
8604
8605 if (off >= (bfd_vma) -2)
8606 abort ();
8607
8608 if ((tls_type & TLS_TLS) != 0)
8609 {
8610 if (tls_type != (TLS_TLS | TLS_LD))
8611 {
8612 if ((tls_mask & TLS_LD) != 0
8613 && !(h == NULL
8614 || !h->def_dynamic))
8615 off += 8;
8616 if (tls_type != (TLS_TLS | TLS_GD))
8617 {
8618 if ((tls_mask & TLS_GD) != 0)
8619 off += 8;
8620 if (tls_type != (TLS_TLS | TLS_DTPREL))
8621 {
8622 if ((tls_mask & TLS_DTPREL) != 0)
8623 off += 4;
8624 }
8625 }
8626 }
8627 }
8628
8629 /* If here for a picfixup, we're done. */
8630 if (r_type != ELF32_R_TYPE (rel->r_info))
8631 goto copy_reloc;
8632
8633 relocation = (htab->elf.sgot->output_section->vma
8634 + htab->elf.sgot->output_offset
8635 + off
8636 - SYM_VAL (htab->elf.hgot));
8637
8638 /* Addends on got relocations don't make much sense.
8639 x+off@got is actually x@got+off, and since the got is
8640 generated by a hash table traversal, the value in the
8641 got at entry m+n bears little relation to the entry m. */
8642 if (addend != 0)
8643 info->callbacks->einfo
8644 /* xgettext:c-format */
8645 (_("%H: non-zero addend on %s reloc against `%s'\n"),
8646 input_bfd, input_section, rel->r_offset,
8647 howto->name,
8648 sym_name);
8649 }
8650 break;
8651
8652 /* Relocations that need no special processing. */
8653 case R_PPC_LOCAL24PC:
8654 /* It makes no sense to point a local relocation
8655 at a symbol not in this object. */
8656 if (unresolved_reloc)
8657 {
8658 (*info->callbacks->undefined_symbol) (info,
8659 h->root.root.string,
8660 input_bfd,
8661 input_section,
8662 rel->r_offset,
8663 TRUE);
8664 goto copy_reloc;
8665 }
8666 if (h != NULL && h->type == STT_GNU_IFUNC && bfd_link_pic (info))
8667 {
8668 /* @local on an ifunc does not really make sense since
8669 the ifunc resolver can take you anywhere. More
8670 seriously, calls to ifuncs must go through a plt call
8671 stub, and for pic the plt call stubs uses r30 to
8672 access the PLT. The problem is that a call that is
8673 local won't have the +32k reloc addend trick marking
8674 -fPIC code, so the linker won't know whether r30 is
8675 _GLOBAL_OFFSET_TABLE_ or pointing into a .got2 section. */
8676 /* xgettext:c-format */
8677 info->callbacks->einfo (_("%X%H: @local call to ifunc %s\n"),
8678 input_bfd, input_section, rel->r_offset,
8679 h->root.root.string);
8680 }
8681 break;
8682
8683 case R_PPC_DTPREL16:
8684 case R_PPC_DTPREL16_LO:
8685 case R_PPC_DTPREL16_HI:
8686 case R_PPC_DTPREL16_HA:
8687 if (htab->elf.tls_sec != NULL)
8688 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
8689 break;
8690
8691 /* Relocations that may need to be propagated if this is a shared
8692 object. */
8693 case R_PPC_TPREL16:
8694 case R_PPC_TPREL16_LO:
8695 case R_PPC_TPREL16_HI:
8696 case R_PPC_TPREL16_HA:
8697 if (h != NULL
8698 && h->root.type == bfd_link_hash_undefweak
8699 && h->dynindx == -1)
8700 {
8701 /* Make this relocation against an undefined weak symbol
8702 resolve to zero. This is really just a tweak, since
8703 code using weak externs ought to check that they are
8704 defined before using them. */
8705 bfd_byte *p = contents + rel->r_offset - d_offset;
8706 unsigned int insn = bfd_get_32 (input_bfd, p);
8707 insn = _bfd_elf_ppc_at_tprel_transform (insn, 2);
8708 if (insn != 0)
8709 bfd_put_32 (input_bfd, insn, p);
8710 break;
8711 }
8712 if (htab->elf.tls_sec != NULL)
8713 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
8714 /* The TPREL16 relocs shouldn't really be used in shared
8715 libs or with non-local symbols as that will result in
8716 DT_TEXTREL being set, but support them anyway. */
8717 goto dodyn;
8718
8719 case R_PPC_TPREL32:
8720 if (htab->elf.tls_sec != NULL)
8721 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
8722 goto dodyn;
8723
8724 case R_PPC_DTPREL32:
8725 if (htab->elf.tls_sec != NULL)
8726 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
8727 goto dodyn;
8728
8729 case R_PPC_DTPMOD32:
8730 relocation = 1;
8731 addend = 0;
8732 goto dodyn;
8733
8734 case R_PPC_REL16:
8735 case R_PPC_REL16_LO:
8736 case R_PPC_REL16_HI:
8737 case R_PPC_REL16_HA:
8738 case R_PPC_REL16DX_HA:
8739 break;
8740
8741 case R_PPC_REL32:
8742 if (h == NULL || h == htab->elf.hgot)
8743 break;
8744 /* fall through */
8745
8746 case R_PPC_ADDR32:
8747 case R_PPC_ADDR16:
8748 case R_PPC_ADDR16_LO:
8749 case R_PPC_ADDR16_HI:
8750 case R_PPC_ADDR16_HA:
8751 case R_PPC_UADDR32:
8752 case R_PPC_UADDR16:
8753 goto dodyn;
8754
8755 case R_PPC_VLE_REL8:
8756 case R_PPC_VLE_REL15:
8757 case R_PPC_VLE_REL24:
8758 case R_PPC_REL24:
8759 case R_PPC_REL14:
8760 case R_PPC_REL14_BRTAKEN:
8761 case R_PPC_REL14_BRNTAKEN:
8762 /* If these relocations are not to a named symbol, they can be
8763 handled right here, no need to bother the dynamic linker. */
8764 if (SYMBOL_CALLS_LOCAL (info, h)
8765 || h == htab->elf.hgot)
8766 break;
8767 /* fall through */
8768
8769 case R_PPC_ADDR24:
8770 case R_PPC_ADDR14:
8771 case R_PPC_ADDR14_BRTAKEN:
8772 case R_PPC_ADDR14_BRNTAKEN:
8773 if (h != NULL && !bfd_link_pic (info))
8774 break;
8775 /* fall through */
8776
8777 dodyn:
8778 if ((input_section->flags & SEC_ALLOC) == 0
8779 || is_vxworks_tls)
8780 break;
8781
8782 if (bfd_link_pic (info)
8783 ? ((h == NULL
8784 || ppc_elf_hash_entry (h)->dyn_relocs != NULL)
8785 && ((h != NULL && pc_dynrelocs (h))
8786 || must_be_dyn_reloc (info, r_type)))
8787 : (h != NULL
8788 && ppc_elf_hash_entry (h)->dyn_relocs != NULL))
8789 {
8790 int skip;
8791 bfd_byte *loc;
8792 asection *sreloc;
8793 long indx = 0;
8794
8795 #ifdef DEBUG
8796 fprintf (stderr, "ppc_elf_relocate_section needs to "
8797 "create relocation for %s\n",
8798 (h && h->root.root.string
8799 ? h->root.root.string : "<unknown>"));
8800 #endif
8801
8802 /* When generating a shared object, these relocations
8803 are copied into the output file to be resolved at run
8804 time. */
8805 skip = 0;
8806 outrel.r_offset = _bfd_elf_section_offset (output_bfd, info,
8807 input_section,
8808 rel->r_offset);
8809 if (outrel.r_offset == (bfd_vma) -1
8810 || outrel.r_offset == (bfd_vma) -2)
8811 skip = (int) outrel.r_offset;
8812 outrel.r_offset += (input_section->output_section->vma
8813 + input_section->output_offset);
8814
8815 if (skip)
8816 memset (&outrel, 0, sizeof outrel);
8817 else if (!SYMBOL_REFERENCES_LOCAL (info, h))
8818 {
8819 indx = h->dynindx;
8820 BFD_ASSERT (indx != -1);
8821 unresolved_reloc = FALSE;
8822 outrel.r_info = ELF32_R_INFO (indx, r_type);
8823 outrel.r_addend = rel->r_addend;
8824 }
8825 else
8826 {
8827 outrel.r_addend = relocation + rel->r_addend;
8828
8829 if (r_type != R_PPC_ADDR32)
8830 {
8831 if (ifunc != NULL)
8832 {
8833 /* If we get here when building a static
8834 executable, then the libc startup function
8835 responsible for applying indirect function
8836 relocations is going to complain about
8837 the reloc type.
8838 If we get here when building a dynamic
8839 executable, it will be because we have
8840 a text relocation. The dynamic loader
8841 will set the text segment writable and
8842 non-executable to apply text relocations.
8843 So we'll segfault when trying to run the
8844 indirection function to resolve the reloc. */
8845 info->callbacks->einfo
8846 /* xgettext:c-format */
8847 (_("%H: relocation %s for indirect "
8848 "function %s unsupported\n"),
8849 input_bfd, input_section, rel->r_offset,
8850 howto->name,
8851 sym_name);
8852 ret = FALSE;
8853 }
8854 else if (r_symndx == STN_UNDEF || bfd_is_abs_section (sec))
8855 ;
8856 else if (sec == NULL || sec->owner == NULL)
8857 {
8858 bfd_set_error (bfd_error_bad_value);
8859 ret = FALSE;
8860 }
8861 else
8862 {
8863 asection *osec;
8864
8865 /* We are turning this relocation into one
8866 against a section symbol. It would be
8867 proper to subtract the symbol's value,
8868 osec->vma, from the emitted reloc addend,
8869 but ld.so expects buggy relocs.
8870 FIXME: Why not always use a zero index? */
8871 osec = sec->output_section;
8872 indx = elf_section_data (osec)->dynindx;
8873 if (indx == 0)
8874 {
8875 osec = htab->elf.text_index_section;
8876 indx = elf_section_data (osec)->dynindx;
8877 }
8878 BFD_ASSERT (indx != 0);
8879 #ifdef DEBUG
8880 if (indx == 0)
8881 printf ("indx=%ld section=%s flags=%08x name=%s\n",
8882 indx, osec->name, osec->flags,
8883 h->root.root.string);
8884 #endif
8885 }
8886
8887 outrel.r_info = ELF32_R_INFO (indx, r_type);
8888 }
8889 else if (ifunc != NULL)
8890 outrel.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
8891 else
8892 outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
8893 }
8894
8895 sreloc = elf_section_data (input_section)->sreloc;
8896 if (ifunc)
8897 {
8898 sreloc = htab->elf.irelplt;
8899 if (indx == 0)
8900 htab->local_ifunc_resolver = 1;
8901 else if (is_static_defined (h))
8902 htab->maybe_local_ifunc_resolver = 1;
8903 }
8904 if (sreloc == NULL)
8905 return FALSE;
8906
8907 loc = sreloc->contents;
8908 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
8909 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
8910
8911 if (skip == -1)
8912 goto copy_reloc;
8913
8914 /* This reloc will be computed at runtime. Clear the memory
8915 so that it contains a predictable value for prelink. */
8916 if (!skip)
8917 {
8918 relocation = howto->pc_relative ? outrel.r_offset : 0;
8919 addend = 0;
8920 break;
8921 }
8922 }
8923 break;
8924
8925 case R_PPC_RELAX_PLT:
8926 case R_PPC_RELAX_PLTREL24:
8927 if (h != NULL)
8928 {
8929 struct plt_entry *ent;
8930 bfd_vma got2_addend = 0;
8931
8932 if (r_type == R_PPC_RELAX_PLTREL24)
8933 {
8934 if (bfd_link_pic (info))
8935 got2_addend = addend;
8936 addend = 0;
8937 }
8938 ent = find_plt_ent (&h->plt.plist, got2, got2_addend);
8939 if (htab->plt_type == PLT_NEW)
8940 relocation = (htab->glink->output_section->vma
8941 + htab->glink->output_offset
8942 + ent->glink_offset);
8943 else
8944 relocation = (htab->elf.splt->output_section->vma
8945 + htab->elf.splt->output_offset
8946 + ent->plt.offset);
8947 }
8948 /* Fall through. */
8949
8950 case R_PPC_RELAX:
8951 {
8952 const int *stub;
8953 size_t size;
8954 size_t insn_offset = rel->r_offset;
8955 unsigned int insn;
8956
8957 if (bfd_link_pic (info))
8958 {
8959 relocation -= (input_section->output_section->vma
8960 + input_section->output_offset
8961 + rel->r_offset - 4);
8962 stub = shared_stub_entry;
8963 bfd_put_32 (input_bfd, stub[0], contents + insn_offset - 12);
8964 bfd_put_32 (input_bfd, stub[1], contents + insn_offset - 8);
8965 bfd_put_32 (input_bfd, stub[2], contents + insn_offset - 4);
8966 stub += 3;
8967 size = ARRAY_SIZE (shared_stub_entry) - 3;
8968 }
8969 else
8970 {
8971 stub = stub_entry;
8972 size = ARRAY_SIZE (stub_entry);
8973 }
8974
8975 relocation += addend;
8976 if (bfd_link_relocatable (info))
8977 relocation = 0;
8978
8979 /* First insn is HA, second is LO. */
8980 insn = *stub++;
8981 insn |= ((relocation + 0x8000) >> 16) & 0xffff;
8982 bfd_put_32 (input_bfd, insn, contents + insn_offset);
8983 insn_offset += 4;
8984
8985 insn = *stub++;
8986 insn |= relocation & 0xffff;
8987 bfd_put_32 (input_bfd, insn, contents + insn_offset);
8988 insn_offset += 4;
8989 size -= 2;
8990
8991 while (size != 0)
8992 {
8993 insn = *stub++;
8994 --size;
8995 bfd_put_32 (input_bfd, insn, contents + insn_offset);
8996 insn_offset += 4;
8997 }
8998
8999 /* Rewrite the reloc and convert one of the trailing nop
9000 relocs to describe this relocation. */
9001 BFD_ASSERT (ELF32_R_TYPE (relend[-1].r_info) == R_PPC_NONE);
9002 /* The relocs are at the bottom 2 bytes */
9003 wrel->r_offset = rel->r_offset + d_offset;
9004 wrel->r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_HA);
9005 wrel->r_addend = rel->r_addend;
9006 memmove (wrel + 1, wrel, (relend - wrel - 1) * sizeof (*wrel));
9007 wrel++, rel++;
9008 wrel->r_offset += 4;
9009 wrel->r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_LO);
9010 }
9011 continue;
9012
9013 /* Indirect .sdata relocation. */
9014 case R_PPC_EMB_SDAI16:
9015 BFD_ASSERT (htab->sdata[0].section != NULL);
9016 if (!is_static_defined (htab->sdata[0].sym))
9017 {
9018 unresolved_reloc = TRUE;
9019 break;
9020 }
9021 relocation
9022 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[0],
9023 h, relocation, rel);
9024 addend = 0;
9025 break;
9026
9027 /* Indirect .sdata2 relocation. */
9028 case R_PPC_EMB_SDA2I16:
9029 BFD_ASSERT (htab->sdata[1].section != NULL);
9030 if (!is_static_defined (htab->sdata[1].sym))
9031 {
9032 unresolved_reloc = TRUE;
9033 break;
9034 }
9035 relocation
9036 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[1],
9037 h, relocation, rel);
9038 addend = 0;
9039 break;
9040
9041 /* Handle the TOC16 reloc. We want to use the offset within the .got
9042 section, not the actual VMA. This is appropriate when generating
9043 an embedded ELF object, for which the .got section acts like the
9044 AIX .toc section. */
9045 case R_PPC_TOC16: /* phony GOT16 relocations */
9046 if (sec == NULL || sec->output_section == NULL)
9047 {
9048 unresolved_reloc = TRUE;
9049 break;
9050 }
9051 BFD_ASSERT (strcmp (bfd_get_section_name (sec->owner, sec),
9052 ".got") == 0
9053 || strcmp (bfd_get_section_name (sec->owner, sec),
9054 ".cgot") == 0);
9055
9056 addend -= sec->output_section->vma + sec->output_offset + 0x8000;
9057 break;
9058
9059 case R_PPC_PLTREL24:
9060 if (h != NULL && ifunc == NULL)
9061 {
9062 struct plt_entry *ent;
9063
9064 ent = find_plt_ent (&h->plt.plist, got2,
9065 bfd_link_pic (info) ? addend : 0);
9066 if (ent == NULL
9067 || htab->elf.splt == NULL)
9068 {
9069 /* We didn't make a PLT entry for this symbol. This
9070 happens when statically linking PIC code, or when
9071 using -Bsymbolic. */
9072 }
9073 else
9074 {
9075 /* Relocation is to the entry for this symbol in the
9076 procedure linkage table. */
9077 unresolved_reloc = FALSE;
9078 if (htab->plt_type == PLT_NEW)
9079 relocation = (htab->glink->output_section->vma
9080 + htab->glink->output_offset
9081 + ent->glink_offset);
9082 else
9083 relocation = (htab->elf.splt->output_section->vma
9084 + htab->elf.splt->output_offset
9085 + ent->plt.offset);
9086 }
9087 }
9088
9089 /* R_PPC_PLTREL24 is rather special. If non-zero, the
9090 addend specifies the GOT pointer offset within .got2.
9091 Don't apply it to the relocation field. */
9092 addend = 0;
9093 break;
9094
9095 /* Relocate against _SDA_BASE_. */
9096 case R_PPC_SDAREL16:
9097 {
9098 const char *name;
9099 struct elf_link_hash_entry *sda = htab->sdata[0].sym;
9100
9101 if (sec == NULL
9102 || sec->output_section == NULL
9103 || !is_static_defined (sda))
9104 {
9105 unresolved_reloc = TRUE;
9106 break;
9107 }
9108 addend -= SYM_VAL (sda);
9109
9110 name = bfd_get_section_name (output_bfd, sec->output_section);
9111 if (!(strcmp (name, ".sdata") == 0
9112 || strcmp (name, ".sbss") == 0))
9113 {
9114 _bfd_error_handler
9115 /* xgettext:c-format */
9116 (_("%pB: the target (%s) of a %s relocation is "
9117 "in the wrong output section (%s)"),
9118 input_bfd,
9119 sym_name,
9120 howto->name,
9121 name);
9122 }
9123 }
9124 break;
9125
9126 /* Relocate against _SDA2_BASE_. */
9127 case R_PPC_EMB_SDA2REL:
9128 {
9129 const char *name;
9130 struct elf_link_hash_entry *sda = htab->sdata[1].sym;
9131
9132 if (sec == NULL
9133 || sec->output_section == NULL
9134 || !is_static_defined (sda))
9135 {
9136 unresolved_reloc = TRUE;
9137 break;
9138 }
9139 addend -= SYM_VAL (sda);
9140
9141 name = bfd_get_section_name (output_bfd, sec->output_section);
9142 if (!(strcmp (name, ".sdata2") == 0
9143 || strcmp (name, ".sbss2") == 0))
9144 {
9145 _bfd_error_handler
9146 /* xgettext:c-format */
9147 (_("%pB: the target (%s) of a %s relocation is "
9148 "in the wrong output section (%s)"),
9149 input_bfd,
9150 sym_name,
9151 howto->name,
9152 name);
9153 }
9154 }
9155 break;
9156
9157 case R_PPC_VLE_LO16A:
9158 relocation = relocation + addend;
9159 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9160 contents + rel->r_offset, relocation,
9161 split16a_type, htab->params->vle_reloc_fixup);
9162 goto copy_reloc;
9163
9164 case R_PPC_VLE_LO16D:
9165 relocation = relocation + addend;
9166 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9167 contents + rel->r_offset, relocation,
9168 split16d_type, htab->params->vle_reloc_fixup);
9169 goto copy_reloc;
9170
9171 case R_PPC_VLE_HI16A:
9172 relocation = (relocation + addend) >> 16;
9173 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9174 contents + rel->r_offset, relocation,
9175 split16a_type, htab->params->vle_reloc_fixup);
9176 goto copy_reloc;
9177
9178 case R_PPC_VLE_HI16D:
9179 relocation = (relocation + addend) >> 16;
9180 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9181 contents + rel->r_offset, relocation,
9182 split16d_type, htab->params->vle_reloc_fixup);
9183 goto copy_reloc;
9184
9185 case R_PPC_VLE_HA16A:
9186 relocation = (relocation + addend + 0x8000) >> 16;
9187 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9188 contents + rel->r_offset, relocation,
9189 split16a_type, htab->params->vle_reloc_fixup);
9190 goto copy_reloc;
9191
9192 case R_PPC_VLE_HA16D:
9193 relocation = (relocation + addend + 0x8000) >> 16;
9194 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9195 contents + rel->r_offset, relocation,
9196 split16d_type, htab->params->vle_reloc_fixup);
9197 goto copy_reloc;
9198
9199 /* Relocate against either _SDA_BASE_, _SDA2_BASE_, or 0. */
9200 case R_PPC_EMB_SDA21:
9201 case R_PPC_VLE_SDA21:
9202 case R_PPC_EMB_RELSDA:
9203 case R_PPC_VLE_SDA21_LO:
9204 {
9205 const char *name;
9206 int reg;
9207 unsigned int insn;
9208 struct elf_link_hash_entry *sda = NULL;
9209
9210 if (sec == NULL || sec->output_section == NULL)
9211 {
9212 unresolved_reloc = TRUE;
9213 break;
9214 }
9215
9216 name = bfd_get_section_name (output_bfd, sec->output_section);
9217 if (strcmp (name, ".sdata") == 0
9218 || strcmp (name, ".sbss") == 0)
9219 {
9220 reg = 13;
9221 sda = htab->sdata[0].sym;
9222 }
9223 else if (strcmp (name, ".sdata2") == 0
9224 || strcmp (name, ".sbss2") == 0)
9225 {
9226 reg = 2;
9227 sda = htab->sdata[1].sym;
9228 }
9229 else if (strcmp (name, ".PPC.EMB.sdata0") == 0
9230 || strcmp (name, ".PPC.EMB.sbss0") == 0)
9231 {
9232 reg = 0;
9233 }
9234 else
9235 {
9236 _bfd_error_handler
9237 /* xgettext:c-format */
9238 (_("%pB: the target (%s) of a %s relocation is "
9239 "in the wrong output section (%s)"),
9240 input_bfd,
9241 sym_name,
9242 howto->name,
9243 name);
9244
9245 bfd_set_error (bfd_error_bad_value);
9246 ret = FALSE;
9247 goto copy_reloc;
9248 }
9249
9250 if (sda != NULL)
9251 {
9252 if (!is_static_defined (sda))
9253 {
9254 unresolved_reloc = TRUE;
9255 break;
9256 }
9257 addend -= SYM_VAL (sda);
9258 }
9259
9260 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
9261 if (reg == 0
9262 && (r_type == R_PPC_VLE_SDA21
9263 || r_type == R_PPC_VLE_SDA21_LO))
9264 {
9265 relocation = relocation + addend;
9266 addend = 0;
9267
9268 /* Force e_li insn, keeping RT from original insn. */
9269 insn &= 0x1f << 21;
9270 insn |= 28u << 26;
9271
9272 /* We have an li20 field, bits 17..20, 11..15, 21..31. */
9273 /* Top 4 bits of value to 17..20. */
9274 insn |= (relocation & 0xf0000) >> 5;
9275 /* Next 5 bits of the value to 11..15. */
9276 insn |= (relocation & 0xf800) << 5;
9277 /* And the final 11 bits of the value to bits 21 to 31. */
9278 insn |= relocation & 0x7ff;
9279
9280 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
9281
9282 if (r_type == R_PPC_VLE_SDA21
9283 && ((relocation + 0x80000) & 0xffffffff) > 0x100000)
9284 goto overflow;
9285 goto copy_reloc;
9286 }
9287 else if (r_type == R_PPC_EMB_SDA21
9288 || r_type == R_PPC_VLE_SDA21
9289 || r_type == R_PPC_VLE_SDA21_LO)
9290 {
9291 /* Fill in register field. */
9292 insn = (insn & ~RA_REGISTER_MASK) | (reg << RA_REGISTER_SHIFT);
9293 }
9294 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
9295 }
9296 break;
9297
9298 case R_PPC_VLE_SDAREL_LO16A:
9299 case R_PPC_VLE_SDAREL_LO16D:
9300 case R_PPC_VLE_SDAREL_HI16A:
9301 case R_PPC_VLE_SDAREL_HI16D:
9302 case R_PPC_VLE_SDAREL_HA16A:
9303 case R_PPC_VLE_SDAREL_HA16D:
9304 {
9305 bfd_vma value;
9306 const char *name;
9307 struct elf_link_hash_entry *sda = NULL;
9308
9309 if (sec == NULL || sec->output_section == NULL)
9310 {
9311 unresolved_reloc = TRUE;
9312 break;
9313 }
9314
9315 name = bfd_get_section_name (output_bfd, sec->output_section);
9316 if (strcmp (name, ".sdata") == 0
9317 || strcmp (name, ".sbss") == 0)
9318 sda = htab->sdata[0].sym;
9319 else if (strcmp (name, ".sdata2") == 0
9320 || strcmp (name, ".sbss2") == 0)
9321 sda = htab->sdata[1].sym;
9322 else
9323 {
9324 _bfd_error_handler
9325 /* xgettext:c-format */
9326 (_("%pB: the target (%s) of a %s relocation is "
9327 "in the wrong output section (%s)"),
9328 input_bfd,
9329 sym_name,
9330 howto->name,
9331 name);
9332
9333 bfd_set_error (bfd_error_bad_value);
9334 ret = FALSE;
9335 goto copy_reloc;
9336 }
9337
9338 if (sda == NULL || !is_static_defined (sda))
9339 {
9340 unresolved_reloc = TRUE;
9341 break;
9342 }
9343 value = relocation + addend - SYM_VAL (sda);
9344
9345 if (r_type == R_PPC_VLE_SDAREL_LO16A)
9346 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9347 contents + rel->r_offset, value,
9348 split16a_type,
9349 htab->params->vle_reloc_fixup);
9350 else if (r_type == R_PPC_VLE_SDAREL_LO16D)
9351 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9352 contents + rel->r_offset, value,
9353 split16d_type,
9354 htab->params->vle_reloc_fixup);
9355 else if (r_type == R_PPC_VLE_SDAREL_HI16A)
9356 {
9357 value = value >> 16;
9358 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9359 contents + rel->r_offset, value,
9360 split16a_type,
9361 htab->params->vle_reloc_fixup);
9362 }
9363 else if (r_type == R_PPC_VLE_SDAREL_HI16D)
9364 {
9365 value = value >> 16;
9366 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9367 contents + rel->r_offset, value,
9368 split16d_type,
9369 htab->params->vle_reloc_fixup);
9370 }
9371 else if (r_type == R_PPC_VLE_SDAREL_HA16A)
9372 {
9373 value = (value + 0x8000) >> 16;
9374 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9375 contents + rel->r_offset, value,
9376 split16a_type,
9377 htab->params->vle_reloc_fixup);
9378 }
9379 else if (r_type == R_PPC_VLE_SDAREL_HA16D)
9380 {
9381 value = (value + 0x8000) >> 16;
9382 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9383 contents + rel->r_offset, value,
9384 split16d_type,
9385 htab->params->vle_reloc_fixup);
9386 }
9387 }
9388 goto copy_reloc;
9389
9390 case R_PPC_VLE_ADDR20:
9391 ppc_elf_vle_split20 (output_bfd, contents + rel->r_offset, relocation);
9392 continue;
9393
9394 /* Relocate against the beginning of the section. */
9395 case R_PPC_SECTOFF:
9396 case R_PPC_SECTOFF_LO:
9397 case R_PPC_SECTOFF_HI:
9398 case R_PPC_SECTOFF_HA:
9399 if (sec == NULL || sec->output_section == NULL)
9400 {
9401 unresolved_reloc = TRUE;
9402 break;
9403 }
9404 addend -= sec->output_section->vma;
9405 break;
9406
9407 /* Negative relocations. */
9408 case R_PPC_EMB_NADDR32:
9409 case R_PPC_EMB_NADDR16:
9410 case R_PPC_EMB_NADDR16_LO:
9411 case R_PPC_EMB_NADDR16_HI:
9412 case R_PPC_EMB_NADDR16_HA:
9413 addend -= 2 * relocation;
9414 break;
9415
9416 case R_PPC_COPY:
9417 case R_PPC_GLOB_DAT:
9418 case R_PPC_JMP_SLOT:
9419 case R_PPC_RELATIVE:
9420 case R_PPC_IRELATIVE:
9421 case R_PPC_PLT32:
9422 case R_PPC_PLTREL32:
9423 case R_PPC_PLT16_LO:
9424 case R_PPC_PLT16_HI:
9425 case R_PPC_PLT16_HA:
9426 case R_PPC_ADDR30:
9427 case R_PPC_EMB_RELSEC16:
9428 case R_PPC_EMB_RELST_LO:
9429 case R_PPC_EMB_RELST_HI:
9430 case R_PPC_EMB_RELST_HA:
9431 case R_PPC_EMB_BIT_FLD:
9432 /* xgettext:c-format */
9433 _bfd_error_handler (_("%pB: %s unsupported"),
9434 input_bfd, howto->name);
9435
9436 bfd_set_error (bfd_error_invalid_operation);
9437 ret = FALSE;
9438 goto copy_reloc;
9439 }
9440
9441 /* Do any further special processing. */
9442 switch (r_type)
9443 {
9444 default:
9445 break;
9446
9447 case R_PPC_ADDR16_HA:
9448 case R_PPC_REL16_HA:
9449 case R_PPC_REL16DX_HA:
9450 case R_PPC_SECTOFF_HA:
9451 case R_PPC_TPREL16_HA:
9452 case R_PPC_DTPREL16_HA:
9453 case R_PPC_EMB_NADDR16_HA:
9454 case R_PPC_EMB_RELST_HA:
9455 /* It's just possible that this symbol is a weak symbol
9456 that's not actually defined anywhere. In that case,
9457 'sec' would be NULL, and we should leave the symbol
9458 alone (it will be set to zero elsewhere in the link). */
9459 if (sec == NULL)
9460 break;
9461 /* Fall through. */
9462
9463 case R_PPC_PLT16_HA:
9464 case R_PPC_GOT16_HA:
9465 case R_PPC_GOT_TLSGD16_HA:
9466 case R_PPC_GOT_TLSLD16_HA:
9467 case R_PPC_GOT_TPREL16_HA:
9468 case R_PPC_GOT_DTPREL16_HA:
9469 /* Add 0x10000 if sign bit in 0:15 is set.
9470 Bits 0:15 are not used. */
9471 addend += 0x8000;
9472 break;
9473
9474 case R_PPC_ADDR16:
9475 case R_PPC_ADDR16_LO:
9476 case R_PPC_GOT16:
9477 case R_PPC_GOT16_LO:
9478 case R_PPC_SDAREL16:
9479 case R_PPC_SECTOFF:
9480 case R_PPC_SECTOFF_LO:
9481 case R_PPC_DTPREL16:
9482 case R_PPC_DTPREL16_LO:
9483 case R_PPC_TPREL16:
9484 case R_PPC_TPREL16_LO:
9485 case R_PPC_GOT_TLSGD16:
9486 case R_PPC_GOT_TLSGD16_LO:
9487 case R_PPC_GOT_TLSLD16:
9488 case R_PPC_GOT_TLSLD16_LO:
9489 case R_PPC_GOT_DTPREL16:
9490 case R_PPC_GOT_DTPREL16_LO:
9491 case R_PPC_GOT_TPREL16:
9492 case R_PPC_GOT_TPREL16_LO:
9493 {
9494 /* The 32-bit ABI lacks proper relocations to deal with
9495 certain 64-bit instructions. Prevent damage to bits
9496 that make up part of the insn opcode. */
9497 unsigned int insn, mask, lobit;
9498
9499 insn = bfd_get_32 (input_bfd,
9500 contents + rel->r_offset - d_offset);
9501 mask = 0;
9502 if (is_insn_ds_form (insn))
9503 mask = 3;
9504 else if (is_insn_dq_form (insn))
9505 mask = 15;
9506 else
9507 break;
9508 relocation += addend;
9509 addend = insn & mask;
9510 lobit = mask & relocation;
9511 if (lobit != 0)
9512 {
9513 relocation ^= lobit;
9514 info->callbacks->einfo
9515 /* xgettext:c-format */
9516 (_("%H: error: %s against `%s' not a multiple of %u\n"),
9517 input_bfd, input_section, rel->r_offset,
9518 howto->name, sym_name, mask + 1);
9519 bfd_set_error (bfd_error_bad_value);
9520 ret = FALSE;
9521 }
9522 }
9523 break;
9524 }
9525
9526 #ifdef DEBUG
9527 fprintf (stderr, "\ttype = %s (%d), name = %s, symbol index = %ld, "
9528 "offset = %ld, addend = %ld\n",
9529 howto->name,
9530 (int) r_type,
9531 sym_name,
9532 r_symndx,
9533 (long) rel->r_offset,
9534 (long) addend);
9535 #endif
9536
9537 if (unresolved_reloc
9538 && !((input_section->flags & SEC_DEBUGGING) != 0
9539 && h->def_dynamic)
9540 && _bfd_elf_section_offset (output_bfd, info, input_section,
9541 rel->r_offset) != (bfd_vma) -1)
9542 {
9543 info->callbacks->einfo
9544 /* xgettext:c-format */
9545 (_("%H: unresolvable %s relocation against symbol `%s'\n"),
9546 input_bfd, input_section, rel->r_offset,
9547 howto->name,
9548 sym_name);
9549 ret = FALSE;
9550 }
9551
9552 /* 16-bit fields in insns mostly have signed values, but a
9553 few insns have 16-bit unsigned values. Really, we should
9554 have different reloc types. */
9555 if (howto->complain_on_overflow != complain_overflow_dont
9556 && howto->dst_mask == 0xffff
9557 && (input_section->flags & SEC_CODE) != 0)
9558 {
9559 enum complain_overflow complain = complain_overflow_signed;
9560
9561 if ((elf_section_flags (input_section) & SHF_PPC_VLE) == 0)
9562 {
9563 unsigned int insn;
9564
9565 insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
9566 if ((insn & (0x3f << 26)) == 10u << 26 /* cmpli */)
9567 complain = complain_overflow_bitfield;
9568 else if ((insn & (0x3f << 26)) == 28u << 26 /* andi */
9569 || (insn & (0x3f << 26)) == 24u << 26 /* ori */
9570 || (insn & (0x3f << 26)) == 26u << 26 /* xori */)
9571 complain = complain_overflow_unsigned;
9572 }
9573 if (howto->complain_on_overflow != complain)
9574 {
9575 alt_howto = *howto;
9576 alt_howto.complain_on_overflow = complain;
9577 howto = &alt_howto;
9578 }
9579 }
9580
9581 if (r_type == R_PPC_REL16DX_HA)
9582 {
9583 /* Split field reloc isn't handled by _bfd_final_link_relocate. */
9584 if (rel->r_offset + 4 > input_section->size)
9585 r = bfd_reloc_outofrange;
9586 else
9587 {
9588 unsigned int insn;
9589
9590 relocation += addend;
9591 relocation -= (rel->r_offset
9592 + input_section->output_offset
9593 + input_section->output_section->vma);
9594 relocation >>= 16;
9595 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
9596 insn &= ~0x1fffc1;
9597 insn |= (relocation & 0xffc1) | ((relocation & 0x3e) << 15);
9598 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
9599 r = bfd_reloc_ok;
9600 }
9601 }
9602 else
9603 r = _bfd_final_link_relocate (howto, input_bfd, input_section, contents,
9604 rel->r_offset, relocation, addend);
9605
9606 if (r != bfd_reloc_ok)
9607 {
9608 if (r == bfd_reloc_overflow)
9609 {
9610 overflow:
9611 /* On code like "if (foo) foo();" don't report overflow
9612 on a branch to zero when foo is undefined. */
9613 if (!warned
9614 && !(h != NULL
9615 && (h->root.type == bfd_link_hash_undefweak
9616 || h->root.type == bfd_link_hash_undefined)
9617 && is_branch_reloc (r_type)))
9618 info->callbacks->reloc_overflow
9619 (info, (h ? &h->root : NULL), sym_name, howto->name,
9620 rel->r_addend, input_bfd, input_section, rel->r_offset);
9621 }
9622 else
9623 {
9624 info->callbacks->einfo
9625 /* xgettext:c-format */
9626 (_("%H: %s reloc against `%s': error %d\n"),
9627 input_bfd, input_section, rel->r_offset,
9628 howto->name, sym_name, (int) r);
9629 ret = FALSE;
9630 }
9631 }
9632 copy_reloc:
9633 if (wrel != rel)
9634 *wrel = *rel;
9635 }
9636
9637 if (wrel != rel)
9638 {
9639 Elf_Internal_Shdr *rel_hdr;
9640 size_t deleted = rel - wrel;
9641
9642 rel_hdr = _bfd_elf_single_rel_hdr (input_section->output_section);
9643 rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted;
9644 if (rel_hdr->sh_size == 0)
9645 {
9646 /* It is too late to remove an empty reloc section. Leave
9647 one NONE reloc.
9648 ??? What is wrong with an empty section??? */
9649 rel_hdr->sh_size = rel_hdr->sh_entsize;
9650 deleted -= 1;
9651 wrel++;
9652 }
9653 relend = wrel;
9654 rel_hdr = _bfd_elf_single_rel_hdr (input_section);
9655 rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted;
9656 input_section->reloc_count -= deleted;
9657 }
9658
9659 #ifdef DEBUG
9660 fprintf (stderr, "\n");
9661 #endif
9662
9663 if (input_section->sec_info_type == SEC_INFO_TYPE_TARGET
9664 && input_section->size != input_section->rawsize
9665 && (strcmp (input_section->output_section->name, ".init") == 0
9666 || strcmp (input_section->output_section->name, ".fini") == 0))
9667 {
9668 /* Branch around the trampolines. */
9669 unsigned int insn = B + input_section->size - input_section->rawsize;
9670 bfd_put_32 (input_bfd, insn, contents + input_section->rawsize);
9671 }
9672
9673 if (htab->params->ppc476_workaround
9674 && input_section->sec_info_type == SEC_INFO_TYPE_TARGET
9675 && (!bfd_link_relocatable (info)
9676 || (input_section->output_section->alignment_power
9677 >= htab->params->pagesize_p2)))
9678 {
9679 bfd_vma start_addr, end_addr, addr;
9680 bfd_vma pagesize = (bfd_vma) 1 << htab->params->pagesize_p2;
9681
9682 if (relax_info->workaround_size != 0)
9683 {
9684 bfd_byte *p;
9685 unsigned int n;
9686 bfd_byte fill[4];
9687
9688 bfd_put_32 (input_bfd, BA, fill);
9689 p = contents + input_section->size - relax_info->workaround_size;
9690 n = relax_info->workaround_size >> 2;
9691 while (n--)
9692 {
9693 memcpy (p, fill, 4);
9694 p += 4;
9695 }
9696 }
9697
9698 /* The idea is: Replace the last instruction on a page with a
9699 branch to a patch area. Put the insn there followed by a
9700 branch back to the next page. Complicated a little by
9701 needing to handle moved conditional branches, and by not
9702 wanting to touch data-in-text. */
9703
9704 start_addr = (input_section->output_section->vma
9705 + input_section->output_offset);
9706 end_addr = (start_addr + input_section->size
9707 - relax_info->workaround_size);
9708 for (addr = ((start_addr & -pagesize) + pagesize - 4);
9709 addr < end_addr;
9710 addr += pagesize)
9711 {
9712 bfd_vma offset = addr - start_addr;
9713 Elf_Internal_Rela *lo, *hi;
9714 bfd_boolean is_data;
9715 bfd_vma patch_off, patch_addr;
9716 unsigned int insn;
9717
9718 /* Do we have a data reloc at this offset? If so, leave
9719 the word alone. */
9720 is_data = FALSE;
9721 lo = relocs;
9722 hi = relend;
9723 rel = NULL;
9724 while (lo < hi)
9725 {
9726 rel = lo + (hi - lo) / 2;
9727 if (rel->r_offset < offset)
9728 lo = rel + 1;
9729 else if (rel->r_offset > offset + 3)
9730 hi = rel;
9731 else
9732 {
9733 switch (ELF32_R_TYPE (rel->r_info))
9734 {
9735 case R_PPC_ADDR32:
9736 case R_PPC_UADDR32:
9737 case R_PPC_REL32:
9738 case R_PPC_ADDR30:
9739 is_data = TRUE;
9740 break;
9741 default:
9742 break;
9743 }
9744 break;
9745 }
9746 }
9747 if (is_data)
9748 continue;
9749
9750 /* Some instructions can be left alone too. Unconditional
9751 branches, except for bcctr with BO=0x14 (bctr, bctrl),
9752 avoid the icache failure.
9753
9754 The problem occurs due to prefetch across a page boundary
9755 where stale instructions can be fetched from the next
9756 page, and the mechanism for flushing these bad
9757 instructions fails under certain circumstances. The
9758 unconditional branches:
9759 1) Branch: b, bl, ba, bla,
9760 2) Branch Conditional: bc, bca, bcl, bcla,
9761 3) Branch Conditional to Link Register: bclr, bclrl,
9762 where (2) and (3) have BO=0x14 making them unconditional,
9763 prevent the bad prefetch because the prefetch itself is
9764 affected by these instructions. This happens even if the
9765 instruction is not executed.
9766
9767 A bctr example:
9768 .
9769 . lis 9,new_page@ha
9770 . addi 9,9,new_page@l
9771 . mtctr 9
9772 . bctr
9773 . nop
9774 . nop
9775 . new_page:
9776 .
9777 The bctr is not predicted taken due to ctr not being
9778 ready, so prefetch continues on past the bctr into the
9779 new page which might have stale instructions. If they
9780 fail to be flushed, then they will be executed after the
9781 bctr executes. Either of the following modifications
9782 prevent the bad prefetch from happening in the first
9783 place:
9784 .
9785 . lis 9,new_page@ha lis 9,new_page@ha
9786 . addi 9,9,new_page@l addi 9,9,new_page@l
9787 . mtctr 9 mtctr 9
9788 . bctr bctr
9789 . nop b somewhere_else
9790 . b somewhere_else nop
9791 . new_page: new_page:
9792 . */
9793 insn = bfd_get_32 (input_bfd, contents + offset);
9794 if ((insn & (0x3f << 26)) == (18u << 26) /* b,bl,ba,bla */
9795 || ((insn & (0x3f << 26)) == (16u << 26) /* bc,bcl,bca,bcla*/
9796 && (insn & (0x14 << 21)) == (0x14 << 21)) /* with BO=0x14 */
9797 || ((insn & (0x3f << 26)) == (19u << 26)
9798 && (insn & (0x3ff << 1)) == (16u << 1) /* bclr,bclrl */
9799 && (insn & (0x14 << 21)) == (0x14 << 21)))/* with BO=0x14 */
9800 continue;
9801
9802 patch_addr = (start_addr + input_section->size
9803 - relax_info->workaround_size);
9804 patch_addr = (patch_addr + 15) & -16;
9805 patch_off = patch_addr - start_addr;
9806 bfd_put_32 (input_bfd, B + patch_off - offset, contents + offset);
9807
9808 if (rel != NULL
9809 && rel->r_offset >= offset
9810 && rel->r_offset < offset + 4)
9811 {
9812 asection *sreloc;
9813
9814 /* If the insn we are patching had a reloc, adjust the
9815 reloc r_offset so that the reloc applies to the moved
9816 location. This matters for -r and --emit-relocs. */
9817 if (rel + 1 != relend)
9818 {
9819 Elf_Internal_Rela tmp = *rel;
9820
9821 /* Keep the relocs sorted by r_offset. */
9822 memmove (rel, rel + 1, (relend - (rel + 1)) * sizeof (*rel));
9823 relend[-1] = tmp;
9824 }
9825 relend[-1].r_offset += patch_off - offset;
9826
9827 /* Adjust REL16 addends too. */
9828 switch (ELF32_R_TYPE (relend[-1].r_info))
9829 {
9830 case R_PPC_REL16:
9831 case R_PPC_REL16_LO:
9832 case R_PPC_REL16_HI:
9833 case R_PPC_REL16_HA:
9834 relend[-1].r_addend += patch_off - offset;
9835 break;
9836 default:
9837 break;
9838 }
9839
9840 /* If we are building a PIE or shared library with
9841 non-PIC objects, perhaps we had a dynamic reloc too?
9842 If so, the dynamic reloc must move with the insn. */
9843 sreloc = elf_section_data (input_section)->sreloc;
9844 if (sreloc != NULL)
9845 {
9846 Elf32_External_Rela *slo, *shi, *srelend;
9847 bfd_vma soffset;
9848
9849 slo = (Elf32_External_Rela *) sreloc->contents;
9850 shi = srelend = slo + sreloc->reloc_count;
9851 soffset = (offset + input_section->output_section->vma
9852 + input_section->output_offset);
9853 while (slo < shi)
9854 {
9855 Elf32_External_Rela *srel = slo + (shi - slo) / 2;
9856 bfd_elf32_swap_reloca_in (output_bfd, (bfd_byte *) srel,
9857 &outrel);
9858 if (outrel.r_offset < soffset)
9859 slo = srel + 1;
9860 else if (outrel.r_offset > soffset + 3)
9861 shi = srel;
9862 else
9863 {
9864 if (srel + 1 != srelend)
9865 {
9866 memmove (srel, srel + 1,
9867 (srelend - (srel + 1)) * sizeof (*srel));
9868 srel = srelend - 1;
9869 }
9870 outrel.r_offset += patch_off - offset;
9871 bfd_elf32_swap_reloca_out (output_bfd, &outrel,
9872 (bfd_byte *) srel);
9873 break;
9874 }
9875 }
9876 }
9877 }
9878 else
9879 rel = NULL;
9880
9881 if ((insn & (0x3f << 26)) == (16u << 26) /* bc */
9882 && (insn & 2) == 0 /* relative */)
9883 {
9884 bfd_vma delta = ((insn & 0xfffc) ^ 0x8000) - 0x8000;
9885
9886 delta += offset - patch_off;
9887 if (bfd_link_relocatable (info) && rel != NULL)
9888 delta = 0;
9889 if (!bfd_link_relocatable (info) && rel != NULL)
9890 {
9891 enum elf_ppc_reloc_type r_type;
9892
9893 r_type = ELF32_R_TYPE (relend[-1].r_info);
9894 if (r_type == R_PPC_REL14_BRTAKEN)
9895 insn |= BRANCH_PREDICT_BIT;
9896 else if (r_type == R_PPC_REL14_BRNTAKEN)
9897 insn &= ~BRANCH_PREDICT_BIT;
9898 else
9899 BFD_ASSERT (r_type == R_PPC_REL14);
9900
9901 if ((r_type == R_PPC_REL14_BRTAKEN
9902 || r_type == R_PPC_REL14_BRNTAKEN)
9903 && delta + 0x8000 < 0x10000
9904 && (bfd_signed_vma) delta < 0)
9905 insn ^= BRANCH_PREDICT_BIT;
9906 }
9907 if (delta + 0x8000 < 0x10000)
9908 {
9909 bfd_put_32 (input_bfd,
9910 (insn & ~0xfffc) | (delta & 0xfffc),
9911 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 else
9919 {
9920 if (rel != NULL)
9921 {
9922 unsigned int r_sym = ELF32_R_SYM (relend[-1].r_info);
9923
9924 relend[-1].r_offset += 8;
9925 relend[-1].r_info = ELF32_R_INFO (r_sym, R_PPC_REL24);
9926 }
9927 bfd_put_32 (input_bfd,
9928 (insn & ~0xfffc) | 8,
9929 contents + patch_off);
9930 patch_off += 4;
9931 bfd_put_32 (input_bfd,
9932 B | ((offset + 4 - patch_off) & 0x3fffffc),
9933 contents + patch_off);
9934 patch_off += 4;
9935 bfd_put_32 (input_bfd,
9936 B | ((delta - 8) & 0x3fffffc),
9937 contents + patch_off);
9938 patch_off += 4;
9939 }
9940 }
9941 else
9942 {
9943 bfd_put_32 (input_bfd, insn, contents + patch_off);
9944 patch_off += 4;
9945 bfd_put_32 (input_bfd,
9946 B | ((offset + 4 - patch_off) & 0x3fffffc),
9947 contents + patch_off);
9948 patch_off += 4;
9949 }
9950 BFD_ASSERT (patch_off <= input_section->size);
9951 relax_info->workaround_size = input_section->size - patch_off;
9952 }
9953 }
9954
9955 return ret;
9956 }
9957 \f
9958 /* Finish up dynamic symbol handling. We set the contents of various
9959 dynamic sections here. */
9960
9961 static bfd_boolean
9962 ppc_elf_finish_dynamic_symbol (bfd *output_bfd,
9963 struct bfd_link_info *info,
9964 struct elf_link_hash_entry *h,
9965 Elf_Internal_Sym *sym)
9966 {
9967 struct ppc_elf_link_hash_table *htab;
9968 struct plt_entry *ent;
9969 bfd_boolean doneone;
9970
9971 #ifdef DEBUG
9972 fprintf (stderr, "ppc_elf_finish_dynamic_symbol called for %s",
9973 h->root.root.string);
9974 #endif
9975
9976 htab = ppc_elf_hash_table (info);
9977 BFD_ASSERT (htab->elf.dynobj != NULL);
9978
9979 doneone = FALSE;
9980 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
9981 if (ent->plt.offset != (bfd_vma) -1)
9982 {
9983 if (!doneone)
9984 {
9985 Elf_Internal_Rela rela;
9986 bfd_byte *loc;
9987 bfd_vma reloc_index;
9988
9989 if (htab->plt_type == PLT_NEW
9990 || !htab->elf.dynamic_sections_created
9991 || h->dynindx == -1)
9992 reloc_index = ent->plt.offset / 4;
9993 else
9994 {
9995 reloc_index = ((ent->plt.offset - htab->plt_initial_entry_size)
9996 / htab->plt_slot_size);
9997 if (reloc_index > PLT_NUM_SINGLE_ENTRIES
9998 && htab->plt_type == PLT_OLD)
9999 reloc_index -= (reloc_index - PLT_NUM_SINGLE_ENTRIES) / 2;
10000 }
10001
10002 /* This symbol has an entry in the procedure linkage table.
10003 Set it up. */
10004 if (htab->plt_type == PLT_VXWORKS
10005 && htab->elf.dynamic_sections_created
10006 && h->dynindx != -1)
10007 {
10008 bfd_vma got_offset;
10009 const bfd_vma *plt_entry;
10010
10011 /* The first three entries in .got.plt are reserved. */
10012 got_offset = (reloc_index + 3) * 4;
10013
10014 /* Use the right PLT. */
10015 plt_entry = bfd_link_pic (info) ? ppc_elf_vxworks_pic_plt_entry
10016 : ppc_elf_vxworks_plt_entry;
10017
10018 /* Fill in the .plt on VxWorks. */
10019 if (bfd_link_pic (info))
10020 {
10021 bfd_put_32 (output_bfd,
10022 plt_entry[0] | PPC_HA (got_offset),
10023 htab->elf.splt->contents + ent->plt.offset + 0);
10024 bfd_put_32 (output_bfd,
10025 plt_entry[1] | PPC_LO (got_offset),
10026 htab->elf.splt->contents + ent->plt.offset + 4);
10027 }
10028 else
10029 {
10030 bfd_vma got_loc = got_offset + SYM_VAL (htab->elf.hgot);
10031
10032 bfd_put_32 (output_bfd,
10033 plt_entry[0] | PPC_HA (got_loc),
10034 htab->elf.splt->contents + ent->plt.offset + 0);
10035 bfd_put_32 (output_bfd,
10036 plt_entry[1] | PPC_LO (got_loc),
10037 htab->elf.splt->contents + ent->plt.offset + 4);
10038 }
10039
10040 bfd_put_32 (output_bfd, plt_entry[2],
10041 htab->elf.splt->contents + ent->plt.offset + 8);
10042 bfd_put_32 (output_bfd, plt_entry[3],
10043 htab->elf.splt->contents + ent->plt.offset + 12);
10044
10045 /* This instruction is an immediate load. The value loaded is
10046 the byte offset of the R_PPC_JMP_SLOT relocation from the
10047 start of the .rela.plt section. The value is stored in the
10048 low-order 16 bits of the load instruction. */
10049 /* NOTE: It appears that this is now an index rather than a
10050 prescaled offset. */
10051 bfd_put_32 (output_bfd,
10052 plt_entry[4] | reloc_index,
10053 htab->elf.splt->contents + ent->plt.offset + 16);
10054 /* This instruction is a PC-relative branch whose target is
10055 the start of the PLT section. The address of this branch
10056 instruction is 20 bytes beyond the start of this PLT entry.
10057 The address is encoded in bits 6-29, inclusive. The value
10058 stored is right-shifted by two bits, permitting a 26-bit
10059 offset. */
10060 bfd_put_32 (output_bfd,
10061 (plt_entry[5]
10062 | (-(ent->plt.offset + 20) & 0x03fffffc)),
10063 htab->elf.splt->contents + ent->plt.offset + 20);
10064 bfd_put_32 (output_bfd, plt_entry[6],
10065 htab->elf.splt->contents + ent->plt.offset + 24);
10066 bfd_put_32 (output_bfd, plt_entry[7],
10067 htab->elf.splt->contents + ent->plt.offset + 28);
10068
10069 /* Fill in the GOT entry corresponding to this PLT slot with
10070 the address immediately after the "bctr" instruction
10071 in this PLT entry. */
10072 bfd_put_32 (output_bfd, (htab->elf.splt->output_section->vma
10073 + htab->elf.splt->output_offset
10074 + ent->plt.offset + 16),
10075 htab->elf.sgotplt->contents + got_offset);
10076
10077 if (!bfd_link_pic (info))
10078 {
10079 /* Fill in a couple of entries in .rela.plt.unloaded. */
10080 loc = htab->srelplt2->contents
10081 + ((VXWORKS_PLTRESOLVE_RELOCS + reloc_index
10082 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS)
10083 * sizeof (Elf32_External_Rela));
10084
10085 /* Provide the @ha relocation for the first instruction. */
10086 rela.r_offset = (htab->elf.splt->output_section->vma
10087 + htab->elf.splt->output_offset
10088 + ent->plt.offset + 2);
10089 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
10090 R_PPC_ADDR16_HA);
10091 rela.r_addend = got_offset;
10092 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10093 loc += sizeof (Elf32_External_Rela);
10094
10095 /* Provide the @l relocation for the second instruction. */
10096 rela.r_offset = (htab->elf.splt->output_section->vma
10097 + htab->elf.splt->output_offset
10098 + ent->plt.offset + 6);
10099 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
10100 R_PPC_ADDR16_LO);
10101 rela.r_addend = got_offset;
10102 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10103 loc += sizeof (Elf32_External_Rela);
10104
10105 /* Provide a relocation for the GOT entry corresponding to this
10106 PLT slot. Point it at the middle of the .plt entry. */
10107 rela.r_offset = (htab->elf.sgotplt->output_section->vma
10108 + htab->elf.sgotplt->output_offset
10109 + got_offset);
10110 rela.r_info = ELF32_R_INFO (htab->elf.hplt->indx,
10111 R_PPC_ADDR32);
10112 rela.r_addend = ent->plt.offset + 16;
10113 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10114 }
10115
10116 /* VxWorks uses non-standard semantics for R_PPC_JMP_SLOT.
10117 In particular, the offset for the relocation is not the
10118 address of the PLT entry for this function, as specified
10119 by the ABI. Instead, the offset is set to the address of
10120 the GOT slot for this function. See EABI 4.4.4.1. */
10121 rela.r_offset = (htab->elf.sgotplt->output_section->vma
10122 + htab->elf.sgotplt->output_offset
10123 + got_offset);
10124
10125 }
10126 else
10127 {
10128 asection *splt = htab->elf.splt;
10129 if (!htab->elf.dynamic_sections_created
10130 || h->dynindx == -1)
10131 splt = htab->elf.iplt;
10132
10133 rela.r_offset = (splt->output_section->vma
10134 + splt->output_offset
10135 + ent->plt.offset);
10136 if (htab->plt_type == PLT_OLD
10137 || !htab->elf.dynamic_sections_created
10138 || h->dynindx == -1)
10139 {
10140 /* We don't need to fill in the .plt. The ppc dynamic
10141 linker will fill it in. */
10142 }
10143 else
10144 {
10145 bfd_vma val = (htab->glink_pltresolve + ent->plt.offset
10146 + htab->glink->output_section->vma
10147 + htab->glink->output_offset);
10148 bfd_put_32 (output_bfd, val,
10149 splt->contents + ent->plt.offset);
10150 }
10151 }
10152
10153 /* Fill in the entry in the .rela.plt section. */
10154 rela.r_addend = 0;
10155 if (!htab->elf.dynamic_sections_created
10156 || h->dynindx == -1)
10157 {
10158 BFD_ASSERT (h->type == STT_GNU_IFUNC
10159 && h->def_regular
10160 && (h->root.type == bfd_link_hash_defined
10161 || h->root.type == bfd_link_hash_defweak));
10162 rela.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
10163 rela.r_addend = SYM_VAL (h);
10164 }
10165 else
10166 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_JMP_SLOT);
10167
10168 if (!htab->elf.dynamic_sections_created
10169 || h->dynindx == -1)
10170 {
10171 loc = (htab->elf.irelplt->contents
10172 + (htab->elf.irelplt->reloc_count++
10173 * sizeof (Elf32_External_Rela)));
10174 htab->local_ifunc_resolver = 1;
10175 }
10176 else
10177 {
10178 loc = (htab->elf.srelplt->contents
10179 + reloc_index * sizeof (Elf32_External_Rela));
10180 if (h->type == STT_GNU_IFUNC && is_static_defined (h))
10181 htab->maybe_local_ifunc_resolver = 1;
10182 }
10183 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10184
10185 if (!h->def_regular)
10186 {
10187 /* Mark the symbol as undefined, rather than as
10188 defined in the .plt section. Leave the value if
10189 there were any relocations where pointer equality
10190 matters (this is a clue for the dynamic linker, to
10191 make function pointer comparisons work between an
10192 application and shared library), otherwise set it
10193 to zero. */
10194 sym->st_shndx = SHN_UNDEF;
10195 if (!h->pointer_equality_needed)
10196 sym->st_value = 0;
10197 else if (!h->ref_regular_nonweak)
10198 {
10199 /* This breaks function pointer comparisons, but
10200 that is better than breaking tests for a NULL
10201 function pointer. */
10202 sym->st_value = 0;
10203 }
10204 }
10205 else if (h->type == STT_GNU_IFUNC
10206 && !bfd_link_pic (info))
10207 {
10208 /* Set the value of ifunc symbols in a non-pie
10209 executable to the glink entry. This is to avoid
10210 text relocations. We can't do this for ifunc in
10211 allocate_dynrelocs, as we do for normal dynamic
10212 function symbols with plt entries, because we need
10213 to keep the original value around for the ifunc
10214 relocation. */
10215 sym->st_shndx = (_bfd_elf_section_from_bfd_section
10216 (output_bfd, htab->glink->output_section));
10217 sym->st_value = (ent->glink_offset
10218 + htab->glink->output_offset
10219 + htab->glink->output_section->vma);
10220 }
10221 doneone = TRUE;
10222 }
10223
10224 if (htab->plt_type == PLT_NEW
10225 || !htab->elf.dynamic_sections_created
10226 || h->dynindx == -1)
10227 {
10228 unsigned char *p;
10229 asection *splt = htab->elf.splt;
10230
10231 if (!htab->elf.dynamic_sections_created
10232 || h->dynindx == -1)
10233 splt = htab->elf.iplt;
10234
10235 p = (unsigned char *) htab->glink->contents + ent->glink_offset;
10236 write_glink_stub (h, ent, splt, p, info);
10237
10238 if (!bfd_link_pic (info))
10239 /* We only need one non-PIC glink stub. */
10240 break;
10241 }
10242 else
10243 break;
10244 }
10245
10246 if (h->needs_copy)
10247 {
10248 asection *s;
10249 Elf_Internal_Rela rela;
10250 bfd_byte *loc;
10251
10252 /* This symbols needs a copy reloc. Set it up. */
10253
10254 #ifdef DEBUG
10255 fprintf (stderr, ", copy");
10256 #endif
10257
10258 BFD_ASSERT (h->dynindx != -1);
10259
10260 if (ppc_elf_hash_entry (h)->has_sda_refs)
10261 s = htab->relsbss;
10262 else if (h->root.u.def.section == htab->elf.sdynrelro)
10263 s = htab->elf.sreldynrelro;
10264 else
10265 s = htab->elf.srelbss;
10266 BFD_ASSERT (s != NULL);
10267
10268 rela.r_offset = SYM_VAL (h);
10269 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_COPY);
10270 rela.r_addend = 0;
10271 loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
10272 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10273 }
10274
10275 #ifdef DEBUG
10276 fprintf (stderr, "\n");
10277 #endif
10278
10279 return TRUE;
10280 }
10281 \f
10282 static enum elf_reloc_type_class
10283 ppc_elf_reloc_type_class (const struct bfd_link_info *info,
10284 const asection *rel_sec,
10285 const Elf_Internal_Rela *rela)
10286 {
10287 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
10288
10289 if (rel_sec == htab->elf.irelplt)
10290 return reloc_class_ifunc;
10291
10292 switch (ELF32_R_TYPE (rela->r_info))
10293 {
10294 case R_PPC_RELATIVE:
10295 return reloc_class_relative;
10296 case R_PPC_JMP_SLOT:
10297 return reloc_class_plt;
10298 case R_PPC_COPY:
10299 return reloc_class_copy;
10300 default:
10301 return reloc_class_normal;
10302 }
10303 }
10304 \f
10305 /* Finish up the dynamic sections. */
10306
10307 static bfd_boolean
10308 ppc_elf_finish_dynamic_sections (bfd *output_bfd,
10309 struct bfd_link_info *info)
10310 {
10311 asection *sdyn;
10312 struct ppc_elf_link_hash_table *htab;
10313 bfd_vma got;
10314 bfd *dynobj;
10315 bfd_boolean ret = TRUE;
10316
10317 #ifdef DEBUG
10318 fprintf (stderr, "ppc_elf_finish_dynamic_sections called\n");
10319 #endif
10320
10321 htab = ppc_elf_hash_table (info);
10322 dynobj = htab->elf.dynobj;
10323 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
10324
10325 got = 0;
10326 if (htab->elf.hgot != NULL)
10327 got = SYM_VAL (htab->elf.hgot);
10328
10329 if (htab->elf.dynamic_sections_created)
10330 {
10331 Elf32_External_Dyn *dyncon, *dynconend;
10332
10333 BFD_ASSERT (htab->elf.splt != NULL && sdyn != NULL);
10334
10335 dyncon = (Elf32_External_Dyn *) sdyn->contents;
10336 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
10337 for (; dyncon < dynconend; dyncon++)
10338 {
10339 Elf_Internal_Dyn dyn;
10340 asection *s;
10341
10342 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
10343
10344 switch (dyn.d_tag)
10345 {
10346 case DT_PLTGOT:
10347 if (htab->is_vxworks)
10348 s = htab->elf.sgotplt;
10349 else
10350 s = htab->elf.splt;
10351 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
10352 break;
10353
10354 case DT_PLTRELSZ:
10355 dyn.d_un.d_val = htab->elf.srelplt->size;
10356 break;
10357
10358 case DT_JMPREL:
10359 s = htab->elf.srelplt;
10360 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
10361 break;
10362
10363 case DT_PPC_GOT:
10364 dyn.d_un.d_ptr = got;
10365 break;
10366
10367 case DT_TEXTREL:
10368 if (htab->local_ifunc_resolver)
10369 info->callbacks->einfo
10370 (_("%X%P: text relocations and GNU indirect "
10371 "functions will result in a segfault at runtime\n"));
10372 else if (htab->maybe_local_ifunc_resolver)
10373 info->callbacks->einfo
10374 (_("%P: warning: text relocations and GNU indirect "
10375 "functions may result in a segfault at runtime\n"));
10376 continue;
10377
10378 default:
10379 if (htab->is_vxworks
10380 && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn))
10381 break;
10382 continue;
10383 }
10384
10385 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
10386 }
10387 }
10388
10389 if (htab->elf.sgot != NULL
10390 && htab->elf.sgot->output_section != bfd_abs_section_ptr)
10391 {
10392 if (htab->elf.hgot->root.u.def.section == htab->elf.sgot
10393 || htab->elf.hgot->root.u.def.section == htab->elf.sgotplt)
10394 {
10395 unsigned char *p = htab->elf.hgot->root.u.def.section->contents;
10396
10397 p += htab->elf.hgot->root.u.def.value;
10398 if (htab->plt_type == PLT_OLD)
10399 {
10400 /* Add a blrl instruction at _GLOBAL_OFFSET_TABLE_-4
10401 so that a function can easily find the address of
10402 _GLOBAL_OFFSET_TABLE_. */
10403 BFD_ASSERT (htab->elf.hgot->root.u.def.value - 4
10404 < htab->elf.hgot->root.u.def.section->size);
10405 bfd_put_32 (output_bfd, 0x4e800021, p - 4);
10406 }
10407
10408 if (sdyn != NULL)
10409 {
10410 bfd_vma val = sdyn->output_section->vma + sdyn->output_offset;
10411 BFD_ASSERT (htab->elf.hgot->root.u.def.value
10412 < htab->elf.hgot->root.u.def.section->size);
10413 bfd_put_32 (output_bfd, val, p);
10414 }
10415 }
10416 else
10417 {
10418 /* xgettext:c-format */
10419 _bfd_error_handler (_("%s not defined in linker created %pA"),
10420 htab->elf.hgot->root.root.string,
10421 (htab->elf.sgotplt != NULL
10422 ? htab->elf.sgotplt : htab->elf.sgot));
10423 bfd_set_error (bfd_error_bad_value);
10424 ret = FALSE;
10425 }
10426
10427 elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize = 4;
10428 }
10429
10430 /* Fill in the first entry in the VxWorks procedure linkage table. */
10431 if (htab->is_vxworks
10432 && htab->elf.splt != NULL
10433 && htab->elf.splt->size != 0
10434 && htab->elf.splt->output_section != bfd_abs_section_ptr)
10435 {
10436 asection *splt = htab->elf.splt;
10437 /* Use the right PLT. */
10438 const bfd_vma *plt_entry = (bfd_link_pic (info)
10439 ? ppc_elf_vxworks_pic_plt0_entry
10440 : ppc_elf_vxworks_plt0_entry);
10441
10442 if (!bfd_link_pic (info))
10443 {
10444 bfd_vma got_value = SYM_VAL (htab->elf.hgot);
10445
10446 bfd_put_32 (output_bfd, plt_entry[0] | PPC_HA (got_value),
10447 splt->contents + 0);
10448 bfd_put_32 (output_bfd, plt_entry[1] | PPC_LO (got_value),
10449 splt->contents + 4);
10450 }
10451 else
10452 {
10453 bfd_put_32 (output_bfd, plt_entry[0], splt->contents + 0);
10454 bfd_put_32 (output_bfd, plt_entry[1], splt->contents + 4);
10455 }
10456 bfd_put_32 (output_bfd, plt_entry[2], splt->contents + 8);
10457 bfd_put_32 (output_bfd, plt_entry[3], splt->contents + 12);
10458 bfd_put_32 (output_bfd, plt_entry[4], splt->contents + 16);
10459 bfd_put_32 (output_bfd, plt_entry[5], splt->contents + 20);
10460 bfd_put_32 (output_bfd, plt_entry[6], splt->contents + 24);
10461 bfd_put_32 (output_bfd, plt_entry[7], splt->contents + 28);
10462
10463 if (! bfd_link_pic (info))
10464 {
10465 Elf_Internal_Rela rela;
10466 bfd_byte *loc;
10467
10468 loc = htab->srelplt2->contents;
10469
10470 /* Output the @ha relocation for the first instruction. */
10471 rela.r_offset = (htab->elf.splt->output_section->vma
10472 + htab->elf.splt->output_offset
10473 + 2);
10474 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
10475 rela.r_addend = 0;
10476 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10477 loc += sizeof (Elf32_External_Rela);
10478
10479 /* Output the @l relocation for the second instruction. */
10480 rela.r_offset = (htab->elf.splt->output_section->vma
10481 + htab->elf.splt->output_offset
10482 + 6);
10483 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
10484 rela.r_addend = 0;
10485 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10486 loc += sizeof (Elf32_External_Rela);
10487
10488 /* Fix up the remaining relocations. They may have the wrong
10489 symbol index for _G_O_T_ or _P_L_T_ depending on the order
10490 in which symbols were output. */
10491 while (loc < htab->srelplt2->contents + htab->srelplt2->size)
10492 {
10493 Elf_Internal_Rela rel;
10494
10495 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
10496 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
10497 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
10498 loc += sizeof (Elf32_External_Rela);
10499
10500 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
10501 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
10502 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
10503 loc += sizeof (Elf32_External_Rela);
10504
10505 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
10506 rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_PPC_ADDR32);
10507 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
10508 loc += sizeof (Elf32_External_Rela);
10509 }
10510 }
10511 }
10512
10513 if (htab->glink != NULL
10514 && htab->glink->contents != NULL
10515 && htab->elf.dynamic_sections_created)
10516 {
10517 unsigned char *p;
10518 unsigned char *endp;
10519 bfd_vma res0;
10520
10521 /*
10522 * PIC glink code is the following:
10523 *
10524 * # ith PLT code stub.
10525 * addis 11,30,(plt+(i-1)*4-got)@ha
10526 * lwz 11,(plt+(i-1)*4-got)@l(11)
10527 * mtctr 11
10528 * bctr
10529 *
10530 * # A table of branches, one for each plt entry.
10531 * # The idea is that the plt call stub loads ctr and r11 with these
10532 * # addresses, so (r11 - res_0) gives the plt index * 4.
10533 * res_0: b PLTresolve
10534 * res_1: b PLTresolve
10535 * .
10536 * # Some number of entries towards the end can be nops
10537 * res_n_m3: nop
10538 * res_n_m2: nop
10539 * res_n_m1:
10540 *
10541 * PLTresolve:
10542 * addis 11,11,(1f-res_0)@ha
10543 * mflr 0
10544 * bcl 20,31,1f
10545 * 1: addi 11,11,(1b-res_0)@l
10546 * mflr 12
10547 * mtlr 0
10548 * sub 11,11,12 # r11 = index * 4
10549 * addis 12,12,(got+4-1b)@ha
10550 * lwz 0,(got+4-1b)@l(12) # got[1] address of dl_runtime_resolve
10551 * lwz 12,(got+8-1b)@l(12) # got[2] contains the map address
10552 * mtctr 0
10553 * add 0,11,11
10554 * add 11,0,11 # r11 = index * 12 = reloc offset.
10555 * bctr
10556 *
10557 * Non-PIC glink code is a little simpler.
10558 *
10559 * # ith PLT code stub.
10560 * lis 11,(plt+(i-1)*4)@ha
10561 * lwz 11,(plt+(i-1)*4)@l(11)
10562 * mtctr 11
10563 * bctr
10564 *
10565 * The branch table is the same, then comes
10566 *
10567 * PLTresolve:
10568 * lis 12,(got+4)@ha
10569 * addis 11,11,(-res_0)@ha
10570 * lwz 0,(got+4)@l(12) # got[1] address of dl_runtime_resolve
10571 * addi 11,11,(-res_0)@l # r11 = index * 4
10572 * mtctr 0
10573 * add 0,11,11
10574 * lwz 12,(got+8)@l(12) # got[2] contains the map address
10575 * add 11,0,11 # r11 = index * 12 = reloc offset.
10576 * bctr
10577 */
10578
10579 /* Build the branch table, one for each plt entry (less one),
10580 and perhaps some padding. */
10581 p = htab->glink->contents;
10582 p += htab->glink_pltresolve;
10583 endp = htab->glink->contents;
10584 endp += htab->glink->size - GLINK_PLTRESOLVE;
10585 while (p < endp - (htab->params->ppc476_workaround ? 0 : 8 * 4))
10586 {
10587 bfd_put_32 (output_bfd, B + endp - p, p);
10588 p += 4;
10589 }
10590 while (p < endp)
10591 {
10592 bfd_put_32 (output_bfd, NOP, p);
10593 p += 4;
10594 }
10595
10596 res0 = (htab->glink_pltresolve
10597 + htab->glink->output_section->vma
10598 + htab->glink->output_offset);
10599
10600 if (htab->params->ppc476_workaround)
10601 {
10602 /* Ensure that a call stub at the end of a page doesn't
10603 result in prefetch over the end of the page into the
10604 glink branch table. */
10605 bfd_vma pagesize = (bfd_vma) 1 << htab->params->pagesize_p2;
10606 bfd_vma page_addr;
10607 bfd_vma glink_start = (htab->glink->output_section->vma
10608 + htab->glink->output_offset);
10609
10610 for (page_addr = res0 & -pagesize;
10611 page_addr > glink_start;
10612 page_addr -= pagesize)
10613 {
10614 /* We have a plt call stub that may need fixing. */
10615 bfd_byte *loc;
10616 unsigned int insn;
10617
10618 loc = htab->glink->contents + page_addr - 4 - glink_start;
10619 insn = bfd_get_32 (output_bfd, loc);
10620 if (insn == BCTR)
10621 {
10622 /* By alignment, we know that there must be at least
10623 one other call stub before this one. */
10624 insn = bfd_get_32 (output_bfd, loc - 16);
10625 if (insn == BCTR)
10626 bfd_put_32 (output_bfd, B | (-16 & 0x3fffffc), loc);
10627 else
10628 bfd_put_32 (output_bfd, B | (-20 & 0x3fffffc), loc);
10629 }
10630 }
10631 }
10632
10633 /* Last comes the PLTresolve stub. */
10634 endp = p + GLINK_PLTRESOLVE;
10635 if (bfd_link_pic (info))
10636 {
10637 bfd_vma bcl;
10638
10639 bcl = (htab->glink->size - GLINK_PLTRESOLVE + 3*4
10640 + htab->glink->output_section->vma
10641 + htab->glink->output_offset);
10642
10643 bfd_put_32 (output_bfd, ADDIS_11_11 + PPC_HA (bcl - res0), p);
10644 p += 4;
10645 bfd_put_32 (output_bfd, MFLR_0, p);
10646 p += 4;
10647 bfd_put_32 (output_bfd, BCL_20_31, p);
10648 p += 4;
10649 bfd_put_32 (output_bfd, ADDI_11_11 + PPC_LO (bcl - res0), p);
10650 p += 4;
10651 bfd_put_32 (output_bfd, MFLR_12, p);
10652 p += 4;
10653 bfd_put_32 (output_bfd, MTLR_0, p);
10654 p += 4;
10655 bfd_put_32 (output_bfd, SUB_11_11_12, p);
10656 p += 4;
10657 bfd_put_32 (output_bfd, ADDIS_12_12 + PPC_HA (got + 4 - bcl), p);
10658 p += 4;
10659 if (PPC_HA (got + 4 - bcl) == PPC_HA (got + 8 - bcl))
10660 {
10661 bfd_put_32 (output_bfd, LWZ_0_12 + PPC_LO (got + 4 - bcl), p);
10662 p += 4;
10663 bfd_put_32 (output_bfd, LWZ_12_12 + PPC_LO (got + 8 - bcl), p);
10664 p += 4;
10665 }
10666 else
10667 {
10668 bfd_put_32 (output_bfd, LWZU_0_12 + PPC_LO (got + 4 - bcl), p);
10669 p += 4;
10670 bfd_put_32 (output_bfd, LWZ_12_12 + 4, p);
10671 p += 4;
10672 }
10673 bfd_put_32 (output_bfd, MTCTR_0, p);
10674 p += 4;
10675 bfd_put_32 (output_bfd, ADD_0_11_11, p);
10676 }
10677 else
10678 {
10679 bfd_put_32 (output_bfd, LIS_12 + PPC_HA (got + 4), p);
10680 p += 4;
10681 bfd_put_32 (output_bfd, ADDIS_11_11 + PPC_HA (-res0), p);
10682 p += 4;
10683 if (PPC_HA (got + 4) == PPC_HA (got + 8))
10684 bfd_put_32 (output_bfd, LWZ_0_12 + PPC_LO (got + 4), p);
10685 else
10686 bfd_put_32 (output_bfd, LWZU_0_12 + PPC_LO (got + 4), p);
10687 p += 4;
10688 bfd_put_32 (output_bfd, ADDI_11_11 + PPC_LO (-res0), p);
10689 p += 4;
10690 bfd_put_32 (output_bfd, MTCTR_0, p);
10691 p += 4;
10692 bfd_put_32 (output_bfd, ADD_0_11_11, p);
10693 p += 4;
10694 if (PPC_HA (got + 4) == PPC_HA (got + 8))
10695 bfd_put_32 (output_bfd, LWZ_12_12 + PPC_LO (got + 8), p);
10696 else
10697 bfd_put_32 (output_bfd, LWZ_12_12 + 4, p);
10698 }
10699 p += 4;
10700 bfd_put_32 (output_bfd, ADD_11_0_11, p);
10701 p += 4;
10702 bfd_put_32 (output_bfd, BCTR, p);
10703 p += 4;
10704 while (p < endp)
10705 {
10706 bfd_put_32 (output_bfd,
10707 htab->params->ppc476_workaround ? BA : NOP, p);
10708 p += 4;
10709 }
10710 BFD_ASSERT (p == endp);
10711 }
10712
10713 if (htab->glink_eh_frame != NULL
10714 && htab->glink_eh_frame->contents != NULL)
10715 {
10716 unsigned char *p = htab->glink_eh_frame->contents;
10717 bfd_vma val;
10718
10719 p += sizeof (glink_eh_frame_cie);
10720 /* FDE length. */
10721 p += 4;
10722 /* CIE pointer. */
10723 p += 4;
10724 /* Offset to .glink. */
10725 val = (htab->glink->output_section->vma
10726 + htab->glink->output_offset);
10727 val -= (htab->glink_eh_frame->output_section->vma
10728 + htab->glink_eh_frame->output_offset);
10729 val -= p - htab->glink_eh_frame->contents;
10730 bfd_put_32 (htab->elf.dynobj, val, p);
10731
10732 if (htab->glink_eh_frame->sec_info_type == SEC_INFO_TYPE_EH_FRAME
10733 && !_bfd_elf_write_section_eh_frame (output_bfd, info,
10734 htab->glink_eh_frame,
10735 htab->glink_eh_frame->contents))
10736 return FALSE;
10737 }
10738
10739 return ret;
10740 }
10741 \f
10742 #define TARGET_LITTLE_SYM powerpc_elf32_le_vec
10743 #define TARGET_LITTLE_NAME "elf32-powerpcle"
10744 #define TARGET_BIG_SYM powerpc_elf32_vec
10745 #define TARGET_BIG_NAME "elf32-powerpc"
10746 #define ELF_ARCH bfd_arch_powerpc
10747 #define ELF_TARGET_ID PPC32_ELF_DATA
10748 #define ELF_MACHINE_CODE EM_PPC
10749 #ifdef __QNXTARGET__
10750 #define ELF_MAXPAGESIZE 0x1000
10751 #define ELF_COMMONPAGESIZE 0x1000
10752 #else
10753 #define ELF_MAXPAGESIZE 0x10000
10754 #define ELF_COMMONPAGESIZE 0x10000
10755 #endif
10756 #define ELF_MINPAGESIZE 0x1000
10757 #define elf_info_to_howto ppc_elf_info_to_howto
10758
10759 #ifdef EM_CYGNUS_POWERPC
10760 #define ELF_MACHINE_ALT1 EM_CYGNUS_POWERPC
10761 #endif
10762
10763 #ifdef EM_PPC_OLD
10764 #define ELF_MACHINE_ALT2 EM_PPC_OLD
10765 #endif
10766
10767 #define elf_backend_plt_not_loaded 1
10768 #define elf_backend_want_dynrelro 1
10769 #define elf_backend_can_gc_sections 1
10770 #define elf_backend_can_refcount 1
10771 #define elf_backend_rela_normal 1
10772 #define elf_backend_caches_rawsize 1
10773
10774 #define bfd_elf32_mkobject ppc_elf_mkobject
10775 #define bfd_elf32_bfd_merge_private_bfd_data ppc_elf_merge_private_bfd_data
10776 #define bfd_elf32_bfd_relax_section ppc_elf_relax_section
10777 #define bfd_elf32_bfd_reloc_type_lookup ppc_elf_reloc_type_lookup
10778 #define bfd_elf32_bfd_reloc_name_lookup ppc_elf_reloc_name_lookup
10779 #define bfd_elf32_bfd_set_private_flags ppc_elf_set_private_flags
10780 #define bfd_elf32_bfd_link_hash_table_create ppc_elf_link_hash_table_create
10781 #define bfd_elf32_get_synthetic_symtab ppc_elf_get_synthetic_symtab
10782
10783 #define elf_backend_object_p ppc_elf_object_p
10784 #define elf_backend_gc_mark_hook ppc_elf_gc_mark_hook
10785 #define elf_backend_section_from_shdr ppc_elf_section_from_shdr
10786 #define elf_backend_relocate_section ppc_elf_relocate_section
10787 #define elf_backend_create_dynamic_sections ppc_elf_create_dynamic_sections
10788 #define elf_backend_check_relocs ppc_elf_check_relocs
10789 #define elf_backend_relocs_compatible _bfd_elf_relocs_compatible
10790 #define elf_backend_copy_indirect_symbol ppc_elf_copy_indirect_symbol
10791 #define elf_backend_adjust_dynamic_symbol ppc_elf_adjust_dynamic_symbol
10792 #define elf_backend_add_symbol_hook ppc_elf_add_symbol_hook
10793 #define elf_backend_size_dynamic_sections ppc_elf_size_dynamic_sections
10794 #define elf_backend_hash_symbol ppc_elf_hash_symbol
10795 #define elf_backend_finish_dynamic_symbol ppc_elf_finish_dynamic_symbol
10796 #define elf_backend_finish_dynamic_sections ppc_elf_finish_dynamic_sections
10797 #define elf_backend_fake_sections ppc_elf_fake_sections
10798 #define elf_backend_additional_program_headers ppc_elf_additional_program_headers
10799 #define elf_backend_modify_segment_map ppc_elf_modify_segment_map
10800 #define elf_backend_grok_prstatus ppc_elf_grok_prstatus
10801 #define elf_backend_grok_psinfo ppc_elf_grok_psinfo
10802 #define elf_backend_write_core_note ppc_elf_write_core_note
10803 #define elf_backend_reloc_type_class ppc_elf_reloc_type_class
10804 #define elf_backend_begin_write_processing ppc_elf_begin_write_processing
10805 #define elf_backend_final_write_processing ppc_elf_final_write_processing
10806 #define elf_backend_write_section ppc_elf_write_section
10807 #define elf_backend_get_sec_type_attr ppc_elf_get_sec_type_attr
10808 #define elf_backend_plt_sym_val ppc_elf_plt_sym_val
10809 #define elf_backend_action_discarded ppc_elf_action_discarded
10810 #define elf_backend_init_index_section _bfd_elf_init_1_index_section
10811 #define elf_backend_lookup_section_flags_hook ppc_elf_lookup_section_flags
10812
10813 #include "elf32-target.h"
10814
10815 /* FreeBSD Target */
10816
10817 #undef TARGET_LITTLE_SYM
10818 #undef TARGET_LITTLE_NAME
10819
10820 #undef TARGET_BIG_SYM
10821 #define TARGET_BIG_SYM powerpc_elf32_fbsd_vec
10822 #undef TARGET_BIG_NAME
10823 #define TARGET_BIG_NAME "elf32-powerpc-freebsd"
10824
10825 #undef ELF_OSABI
10826 #define ELF_OSABI ELFOSABI_FREEBSD
10827
10828 #undef elf32_bed
10829 #define elf32_bed elf32_powerpc_fbsd_bed
10830
10831 #include "elf32-target.h"
10832
10833 /* VxWorks Target */
10834
10835 #undef TARGET_LITTLE_SYM
10836 #undef TARGET_LITTLE_NAME
10837
10838 #undef TARGET_BIG_SYM
10839 #define TARGET_BIG_SYM powerpc_elf32_vxworks_vec
10840 #undef TARGET_BIG_NAME
10841 #define TARGET_BIG_NAME "elf32-powerpc-vxworks"
10842
10843 #undef ELF_OSABI
10844
10845 /* VxWorks uses the elf default section flags for .plt. */
10846 static const struct bfd_elf_special_section *
10847 ppc_elf_vxworks_get_sec_type_attr (bfd *abfd, asection *sec)
10848 {
10849 if (sec->name == NULL)
10850 return NULL;
10851
10852 if (strcmp (sec->name, ".plt") == 0)
10853 return _bfd_elf_get_sec_type_attr (abfd, sec);
10854
10855 return ppc_elf_get_sec_type_attr (abfd, sec);
10856 }
10857
10858 /* Like ppc_elf_link_hash_table_create, but overrides
10859 appropriately for VxWorks. */
10860 static struct bfd_link_hash_table *
10861 ppc_elf_vxworks_link_hash_table_create (bfd *abfd)
10862 {
10863 struct bfd_link_hash_table *ret;
10864
10865 ret = ppc_elf_link_hash_table_create (abfd);
10866 if (ret)
10867 {
10868 struct ppc_elf_link_hash_table *htab
10869 = (struct ppc_elf_link_hash_table *)ret;
10870 htab->is_vxworks = 1;
10871 htab->plt_type = PLT_VXWORKS;
10872 htab->plt_entry_size = VXWORKS_PLT_ENTRY_SIZE;
10873 htab->plt_slot_size = VXWORKS_PLT_ENTRY_SIZE;
10874 htab->plt_initial_entry_size = VXWORKS_PLT_INITIAL_ENTRY_SIZE;
10875 }
10876 return ret;
10877 }
10878
10879 /* Tweak magic VxWorks symbols as they are loaded. */
10880 static bfd_boolean
10881 ppc_elf_vxworks_add_symbol_hook (bfd *abfd,
10882 struct bfd_link_info *info,
10883 Elf_Internal_Sym *sym,
10884 const char **namep,
10885 flagword *flagsp,
10886 asection **secp,
10887 bfd_vma *valp)
10888 {
10889 if (!elf_vxworks_add_symbol_hook (abfd, info, sym, namep, flagsp, secp,
10890 valp))
10891 return FALSE;
10892
10893 return ppc_elf_add_symbol_hook (abfd, info, sym, namep, flagsp, secp, valp);
10894 }
10895
10896 static void
10897 ppc_elf_vxworks_final_write_processing (bfd *abfd, bfd_boolean linker)
10898 {
10899 ppc_elf_final_write_processing (abfd, linker);
10900 elf_vxworks_final_write_processing (abfd, linker);
10901 }
10902
10903 /* On VxWorks, we emit relocations against _PROCEDURE_LINKAGE_TABLE_, so
10904 define it. */
10905 #undef elf_backend_want_plt_sym
10906 #define elf_backend_want_plt_sym 1
10907 #undef elf_backend_want_got_plt
10908 #define elf_backend_want_got_plt 1
10909 #undef elf_backend_got_symbol_offset
10910 #define elf_backend_got_symbol_offset 0
10911 #undef elf_backend_plt_not_loaded
10912 #define elf_backend_plt_not_loaded 0
10913 #undef elf_backend_plt_readonly
10914 #define elf_backend_plt_readonly 1
10915 #undef elf_backend_got_header_size
10916 #define elf_backend_got_header_size 12
10917 #undef elf_backend_dtrel_excludes_plt
10918 #define elf_backend_dtrel_excludes_plt 1
10919
10920 #undef bfd_elf32_get_synthetic_symtab
10921
10922 #undef bfd_elf32_bfd_link_hash_table_create
10923 #define bfd_elf32_bfd_link_hash_table_create \
10924 ppc_elf_vxworks_link_hash_table_create
10925 #undef elf_backend_add_symbol_hook
10926 #define elf_backend_add_symbol_hook \
10927 ppc_elf_vxworks_add_symbol_hook
10928 #undef elf_backend_link_output_symbol_hook
10929 #define elf_backend_link_output_symbol_hook \
10930 elf_vxworks_link_output_symbol_hook
10931 #undef elf_backend_final_write_processing
10932 #define elf_backend_final_write_processing \
10933 ppc_elf_vxworks_final_write_processing
10934 #undef elf_backend_get_sec_type_attr
10935 #define elf_backend_get_sec_type_attr \
10936 ppc_elf_vxworks_get_sec_type_attr
10937 #undef elf_backend_emit_relocs
10938 #define elf_backend_emit_relocs \
10939 elf_vxworks_emit_relocs
10940
10941 #undef elf32_bed
10942 #define elf32_bed ppc_elf_vxworks_bed
10943 #undef elf_backend_post_process_headers
10944
10945 #include "elf32-target.h"
GDB Binutils - Deliverables
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