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Fix PR ld/22263 on SPARC.
[deliverable/binutils-gdb.git] / bfd / elf32-ppc.c
1 /* PowerPC-specific support for 32-bit ELF
2 Copyright (C) 1994-2018 Free Software Foundation, Inc.
3 Written by Ian Lance Taylor, Cygnus Support.
4
5 This file is part of BFD, the Binary File Descriptor library.
6
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
11
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
16
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the
19 Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor,
20 Boston, MA 02110-1301, USA. */
21
22
23 /* This file is based on a preliminary PowerPC ELF ABI. The
24 information may not match the final PowerPC ELF ABI. It includes
25 suggestions from the in-progress Embedded PowerPC ABI, and that
26 information may also not match. */
27
28 #include "sysdep.h"
29 #include <stdarg.h>
30 #include "bfd.h"
31 #include "bfdlink.h"
32 #include "libbfd.h"
33 #include "elf-bfd.h"
34 #include "elf/ppc.h"
35 #include "elf32-ppc.h"
36 #include "elf-vxworks.h"
37 #include "dwarf2.h"
38 #include "opcode/ppc.h"
39
40 typedef enum split16_format_type
41 {
42 split16a_type = 0,
43 split16d_type
44 }
45 split16_format_type;
46
47 /* RELA relocations are used here. */
48
49 static bfd_reloc_status_type ppc_elf_addr16_ha_reloc
50 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
51 static bfd_reloc_status_type ppc_elf_unhandled_reloc
52 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
53
54 /* Branch prediction bit for branch taken relocs. */
55 #define BRANCH_PREDICT_BIT 0x200000
56 /* Mask to set RA in memory instructions. */
57 #define RA_REGISTER_MASK 0x001f0000
58 /* Value to shift register by to insert RA. */
59 #define RA_REGISTER_SHIFT 16
60
61 /* The name of the dynamic interpreter. This is put in the .interp
62 section. */
63 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
64
65 /* For old-style PLT. */
66 /* The number of single-slot PLT entries (the rest use two slots). */
67 #define PLT_NUM_SINGLE_ENTRIES 8192
68
69 /* For new-style .glink and .plt. */
70 #define GLINK_PLTRESOLVE 16*4
71 #define GLINK_ENTRY_SIZE(htab, h) \
72 (((!htab->params->speculate_indirect_jumps ? 6*4 : 4*4) \
73 + (h != NULL \
74 && h == htab->tls_get_addr \
75 && !htab->params->no_tls_get_addr_opt ? 8*4 : 0) \
76 + (1u << htab->params->plt_stub_align) - 1) \
77 & -(1u << htab->params->plt_stub_align))
78
79 /* VxWorks uses its own plt layout, filled in by the static linker. */
80
81 /* The standard VxWorks PLT entry. */
82 #define VXWORKS_PLT_ENTRY_SIZE 32
83 static const bfd_vma ppc_elf_vxworks_plt_entry
84 [VXWORKS_PLT_ENTRY_SIZE / 4] =
85 {
86 0x3d800000, /* lis r12,0 */
87 0x818c0000, /* lwz r12,0(r12) */
88 0x7d8903a6, /* mtctr r12 */
89 0x4e800420, /* bctr */
90 0x39600000, /* li r11,0 */
91 0x48000000, /* b 14 <.PLT0resolve+0x4> */
92 0x60000000, /* nop */
93 0x60000000, /* nop */
94 };
95 static const bfd_vma ppc_elf_vxworks_pic_plt_entry
96 [VXWORKS_PLT_ENTRY_SIZE / 4] =
97 {
98 0x3d9e0000, /* addis r12,r30,0 */
99 0x818c0000, /* lwz r12,0(r12) */
100 0x7d8903a6, /* mtctr r12 */
101 0x4e800420, /* bctr */
102 0x39600000, /* li r11,0 */
103 0x48000000, /* b 14 <.PLT0resolve+0x4> 14: R_PPC_REL24 .PLTresolve */
104 0x60000000, /* nop */
105 0x60000000, /* nop */
106 };
107
108 /* The initial VxWorks PLT entry. */
109 #define VXWORKS_PLT_INITIAL_ENTRY_SIZE 32
110 static const bfd_vma ppc_elf_vxworks_plt0_entry
111 [VXWORKS_PLT_INITIAL_ENTRY_SIZE / 4] =
112 {
113 0x3d800000, /* lis r12,0 */
114 0x398c0000, /* addi r12,r12,0 */
115 0x800c0008, /* lwz r0,8(r12) */
116 0x7c0903a6, /* mtctr r0 */
117 0x818c0004, /* lwz r12,4(r12) */
118 0x4e800420, /* bctr */
119 0x60000000, /* nop */
120 0x60000000, /* nop */
121 };
122 static const bfd_vma ppc_elf_vxworks_pic_plt0_entry
123 [VXWORKS_PLT_INITIAL_ENTRY_SIZE / 4] =
124 {
125 0x819e0008, /* lwz r12,8(r30) */
126 0x7d8903a6, /* mtctr r12 */
127 0x819e0004, /* lwz r12,4(r30) */
128 0x4e800420, /* bctr */
129 0x60000000, /* nop */
130 0x60000000, /* nop */
131 0x60000000, /* nop */
132 0x60000000, /* nop */
133 };
134
135 /* For executables, we have some additional relocations in
136 .rela.plt.unloaded, for the kernel loader. */
137
138 /* The number of non-JMP_SLOT relocations per PLT0 slot. */
139 #define VXWORKS_PLT_NON_JMP_SLOT_RELOCS 3
140 /* The number of relocations in the PLTResolve slot. */
141 #define VXWORKS_PLTRESOLVE_RELOCS 2
142 /* The number of relocations in the PLTResolve slot when creating
143 a shared library. */
144 #define VXWORKS_PLTRESOLVE_RELOCS_SHLIB 0
145
146 /* Some instructions. */
147 #define ADDIS_11_11 0x3d6b0000
148 #define ADDIS_11_30 0x3d7e0000
149 #define ADDIS_12_12 0x3d8c0000
150 #define ADDI_11_11 0x396b0000
151 #define ADD_0_11_11 0x7c0b5a14
152 #define ADD_3_12_2 0x7c6c1214
153 #define ADD_11_0_11 0x7d605a14
154 #define B 0x48000000
155 #define BA 0x48000002
156 #define BCL_20_31 0x429f0005
157 #define BCTR 0x4e800420
158 #define CRSETEQ 0x4c421242
159 #define BEQCTRM 0x4dc20420
160 #define BEQLR 0x4d820020
161 #define CMPWI_11_0 0x2c0b0000
162 #define LIS_11 0x3d600000
163 #define LIS_12 0x3d800000
164 #define LWZU_0_12 0x840c0000
165 #define LWZ_0_12 0x800c0000
166 #define LWZ_11_3 0x81630000
167 #define LWZ_11_11 0x816b0000
168 #define LWZ_11_30 0x817e0000
169 #define LWZ_12_3 0x81830000
170 #define LWZ_12_12 0x818c0000
171 #define MR_0_3 0x7c601b78
172 #define MR_3_0 0x7c030378
173 #define MFLR_0 0x7c0802a6
174 #define MFLR_12 0x7d8802a6
175 #define MTCTR_0 0x7c0903a6
176 #define MTCTR_11 0x7d6903a6
177 #define MTLR_0 0x7c0803a6
178 #define NOP 0x60000000
179 #define SUB_11_11_12 0x7d6c5850
180
181 /* Offset of tp and dtp pointers from start of TLS block. */
182 #define TP_OFFSET 0x7000
183 #define DTP_OFFSET 0x8000
184
185 /* The value of a defined global symbol. */
186 #define SYM_VAL(SYM) \
187 ((SYM)->root.u.def.section->output_section->vma \
188 + (SYM)->root.u.def.section->output_offset \
189 + (SYM)->root.u.def.value)
190 \f
191 static reloc_howto_type *ppc_elf_howto_table[R_PPC_max];
192
193 static reloc_howto_type ppc_elf_howto_raw[] = {
194 /* This reloc does nothing. */
195 HOWTO (R_PPC_NONE, /* type */
196 0, /* rightshift */
197 3, /* size (0 = byte, 1 = short, 2 = long) */
198 0, /* bitsize */
199 FALSE, /* pc_relative */
200 0, /* bitpos */
201 complain_overflow_dont, /* complain_on_overflow */
202 bfd_elf_generic_reloc, /* special_function */
203 "R_PPC_NONE", /* name */
204 FALSE, /* partial_inplace */
205 0, /* src_mask */
206 0, /* dst_mask */
207 FALSE), /* pcrel_offset */
208
209 /* A standard 32 bit relocation. */
210 HOWTO (R_PPC_ADDR32, /* type */
211 0, /* rightshift */
212 2, /* size (0 = byte, 1 = short, 2 = long) */
213 32, /* bitsize */
214 FALSE, /* pc_relative */
215 0, /* bitpos */
216 complain_overflow_dont, /* complain_on_overflow */
217 bfd_elf_generic_reloc, /* special_function */
218 "R_PPC_ADDR32", /* name */
219 FALSE, /* partial_inplace */
220 0, /* src_mask */
221 0xffffffff, /* dst_mask */
222 FALSE), /* pcrel_offset */
223
224 /* An absolute 26 bit branch; the lower two bits must be zero.
225 FIXME: we don't check that, we just clear them. */
226 HOWTO (R_PPC_ADDR24, /* type */
227 0, /* rightshift */
228 2, /* size (0 = byte, 1 = short, 2 = long) */
229 26, /* bitsize */
230 FALSE, /* pc_relative */
231 0, /* bitpos */
232 complain_overflow_signed, /* complain_on_overflow */
233 bfd_elf_generic_reloc, /* special_function */
234 "R_PPC_ADDR24", /* name */
235 FALSE, /* partial_inplace */
236 0, /* src_mask */
237 0x3fffffc, /* dst_mask */
238 FALSE), /* pcrel_offset */
239
240 /* A standard 16 bit relocation. */
241 HOWTO (R_PPC_ADDR16, /* type */
242 0, /* rightshift */
243 1, /* size (0 = byte, 1 = short, 2 = long) */
244 16, /* bitsize */
245 FALSE, /* pc_relative */
246 0, /* bitpos */
247 complain_overflow_bitfield, /* complain_on_overflow */
248 bfd_elf_generic_reloc, /* special_function */
249 "R_PPC_ADDR16", /* name */
250 FALSE, /* partial_inplace */
251 0, /* src_mask */
252 0xffff, /* dst_mask */
253 FALSE), /* pcrel_offset */
254
255 /* A 16 bit relocation without overflow. */
256 HOWTO (R_PPC_ADDR16_LO, /* type */
257 0, /* rightshift */
258 1, /* size (0 = byte, 1 = short, 2 = long) */
259 16, /* bitsize */
260 FALSE, /* pc_relative */
261 0, /* bitpos */
262 complain_overflow_dont,/* complain_on_overflow */
263 bfd_elf_generic_reloc, /* special_function */
264 "R_PPC_ADDR16_LO", /* name */
265 FALSE, /* partial_inplace */
266 0, /* src_mask */
267 0xffff, /* dst_mask */
268 FALSE), /* pcrel_offset */
269
270 /* The high order 16 bits of an address. */
271 HOWTO (R_PPC_ADDR16_HI, /* type */
272 16, /* rightshift */
273 1, /* size (0 = byte, 1 = short, 2 = long) */
274 16, /* bitsize */
275 FALSE, /* pc_relative */
276 0, /* bitpos */
277 complain_overflow_dont, /* complain_on_overflow */
278 bfd_elf_generic_reloc, /* special_function */
279 "R_PPC_ADDR16_HI", /* name */
280 FALSE, /* partial_inplace */
281 0, /* src_mask */
282 0xffff, /* dst_mask */
283 FALSE), /* pcrel_offset */
284
285 /* The high order 16 bits of an address, plus 1 if the contents of
286 the low 16 bits, treated as a signed number, is negative. */
287 HOWTO (R_PPC_ADDR16_HA, /* type */
288 16, /* rightshift */
289 1, /* size (0 = byte, 1 = short, 2 = long) */
290 16, /* bitsize */
291 FALSE, /* pc_relative */
292 0, /* bitpos */
293 complain_overflow_dont, /* complain_on_overflow */
294 ppc_elf_addr16_ha_reloc, /* special_function */
295 "R_PPC_ADDR16_HA", /* name */
296 FALSE, /* partial_inplace */
297 0, /* src_mask */
298 0xffff, /* dst_mask */
299 FALSE), /* pcrel_offset */
300
301 /* An absolute 16 bit branch; the lower two bits must be zero.
302 FIXME: we don't check that, we just clear them. */
303 HOWTO (R_PPC_ADDR14, /* type */
304 0, /* rightshift */
305 2, /* size (0 = byte, 1 = short, 2 = long) */
306 16, /* bitsize */
307 FALSE, /* pc_relative */
308 0, /* bitpos */
309 complain_overflow_signed, /* complain_on_overflow */
310 bfd_elf_generic_reloc, /* special_function */
311 "R_PPC_ADDR14", /* name */
312 FALSE, /* partial_inplace */
313 0, /* src_mask */
314 0xfffc, /* dst_mask */
315 FALSE), /* pcrel_offset */
316
317 /* An absolute 16 bit branch, for which bit 10 should be set to
318 indicate that the branch is expected to be taken. The lower two
319 bits must be zero. */
320 HOWTO (R_PPC_ADDR14_BRTAKEN, /* type */
321 0, /* rightshift */
322 2, /* size (0 = byte, 1 = short, 2 = long) */
323 16, /* bitsize */
324 FALSE, /* pc_relative */
325 0, /* bitpos */
326 complain_overflow_signed, /* complain_on_overflow */
327 bfd_elf_generic_reloc, /* special_function */
328 "R_PPC_ADDR14_BRTAKEN",/* name */
329 FALSE, /* partial_inplace */
330 0, /* src_mask */
331 0xfffc, /* dst_mask */
332 FALSE), /* pcrel_offset */
333
334 /* An absolute 16 bit branch, for which bit 10 should be set to
335 indicate that the branch is not expected to be taken. The lower
336 two bits must be zero. */
337 HOWTO (R_PPC_ADDR14_BRNTAKEN, /* type */
338 0, /* rightshift */
339 2, /* size (0 = byte, 1 = short, 2 = long) */
340 16, /* bitsize */
341 FALSE, /* pc_relative */
342 0, /* bitpos */
343 complain_overflow_signed, /* complain_on_overflow */
344 bfd_elf_generic_reloc, /* special_function */
345 "R_PPC_ADDR14_BRNTAKEN",/* name */
346 FALSE, /* partial_inplace */
347 0, /* src_mask */
348 0xfffc, /* dst_mask */
349 FALSE), /* pcrel_offset */
350
351 /* A relative 26 bit branch; the lower two bits must be zero. */
352 HOWTO (R_PPC_REL24, /* type */
353 0, /* rightshift */
354 2, /* size (0 = byte, 1 = short, 2 = long) */
355 26, /* bitsize */
356 TRUE, /* pc_relative */
357 0, /* bitpos */
358 complain_overflow_signed, /* complain_on_overflow */
359 bfd_elf_generic_reloc, /* special_function */
360 "R_PPC_REL24", /* name */
361 FALSE, /* partial_inplace */
362 0, /* src_mask */
363 0x3fffffc, /* dst_mask */
364 TRUE), /* pcrel_offset */
365
366 /* A relative 16 bit branch; the lower two bits must be zero. */
367 HOWTO (R_PPC_REL14, /* type */
368 0, /* rightshift */
369 2, /* size (0 = byte, 1 = short, 2 = long) */
370 16, /* bitsize */
371 TRUE, /* pc_relative */
372 0, /* bitpos */
373 complain_overflow_signed, /* complain_on_overflow */
374 bfd_elf_generic_reloc, /* special_function */
375 "R_PPC_REL14", /* name */
376 FALSE, /* partial_inplace */
377 0, /* src_mask */
378 0xfffc, /* dst_mask */
379 TRUE), /* pcrel_offset */
380
381 /* A relative 16 bit branch. Bit 10 should be set to indicate that
382 the branch is expected to be taken. The lower two bits must be
383 zero. */
384 HOWTO (R_PPC_REL14_BRTAKEN, /* type */
385 0, /* rightshift */
386 2, /* size (0 = byte, 1 = short, 2 = long) */
387 16, /* bitsize */
388 TRUE, /* pc_relative */
389 0, /* bitpos */
390 complain_overflow_signed, /* complain_on_overflow */
391 bfd_elf_generic_reloc, /* special_function */
392 "R_PPC_REL14_BRTAKEN", /* name */
393 FALSE, /* partial_inplace */
394 0, /* src_mask */
395 0xfffc, /* dst_mask */
396 TRUE), /* pcrel_offset */
397
398 /* A relative 16 bit branch. Bit 10 should be set to indicate that
399 the branch is not expected to be taken. The lower two bits must
400 be zero. */
401 HOWTO (R_PPC_REL14_BRNTAKEN, /* type */
402 0, /* rightshift */
403 2, /* size (0 = byte, 1 = short, 2 = long) */
404 16, /* bitsize */
405 TRUE, /* pc_relative */
406 0, /* bitpos */
407 complain_overflow_signed, /* complain_on_overflow */
408 bfd_elf_generic_reloc, /* special_function */
409 "R_PPC_REL14_BRNTAKEN",/* name */
410 FALSE, /* partial_inplace */
411 0, /* src_mask */
412 0xfffc, /* dst_mask */
413 TRUE), /* pcrel_offset */
414
415 /* Like R_PPC_ADDR16, but referring to the GOT table entry for the
416 symbol. */
417 HOWTO (R_PPC_GOT16, /* type */
418 0, /* rightshift */
419 1, /* size (0 = byte, 1 = short, 2 = long) */
420 16, /* bitsize */
421 FALSE, /* pc_relative */
422 0, /* bitpos */
423 complain_overflow_signed, /* complain_on_overflow */
424 ppc_elf_unhandled_reloc, /* special_function */
425 "R_PPC_GOT16", /* name */
426 FALSE, /* partial_inplace */
427 0, /* src_mask */
428 0xffff, /* dst_mask */
429 FALSE), /* pcrel_offset */
430
431 /* Like R_PPC_ADDR16_LO, but referring to the GOT table entry for
432 the symbol. */
433 HOWTO (R_PPC_GOT16_LO, /* type */
434 0, /* rightshift */
435 1, /* size (0 = byte, 1 = short, 2 = long) */
436 16, /* bitsize */
437 FALSE, /* pc_relative */
438 0, /* bitpos */
439 complain_overflow_dont, /* complain_on_overflow */
440 ppc_elf_unhandled_reloc, /* special_function */
441 "R_PPC_GOT16_LO", /* name */
442 FALSE, /* partial_inplace */
443 0, /* src_mask */
444 0xffff, /* dst_mask */
445 FALSE), /* pcrel_offset */
446
447 /* Like R_PPC_ADDR16_HI, but referring to the GOT table entry for
448 the symbol. */
449 HOWTO (R_PPC_GOT16_HI, /* type */
450 16, /* rightshift */
451 1, /* size (0 = byte, 1 = short, 2 = long) */
452 16, /* bitsize */
453 FALSE, /* pc_relative */
454 0, /* bitpos */
455 complain_overflow_dont, /* complain_on_overflow */
456 ppc_elf_unhandled_reloc, /* special_function */
457 "R_PPC_GOT16_HI", /* name */
458 FALSE, /* partial_inplace */
459 0, /* src_mask */
460 0xffff, /* dst_mask */
461 FALSE), /* pcrel_offset */
462
463 /* Like R_PPC_ADDR16_HA, but referring to the GOT table entry for
464 the symbol. */
465 HOWTO (R_PPC_GOT16_HA, /* type */
466 16, /* rightshift */
467 1, /* size (0 = byte, 1 = short, 2 = long) */
468 16, /* bitsize */
469 FALSE, /* pc_relative */
470 0, /* bitpos */
471 complain_overflow_dont, /* complain_on_overflow */
472 ppc_elf_unhandled_reloc, /* special_function */
473 "R_PPC_GOT16_HA", /* name */
474 FALSE, /* partial_inplace */
475 0, /* src_mask */
476 0xffff, /* dst_mask */
477 FALSE), /* pcrel_offset */
478
479 /* Like R_PPC_REL24, but referring to the procedure linkage table
480 entry for the symbol. */
481 HOWTO (R_PPC_PLTREL24, /* type */
482 0, /* rightshift */
483 2, /* size (0 = byte, 1 = short, 2 = long) */
484 26, /* bitsize */
485 TRUE, /* pc_relative */
486 0, /* bitpos */
487 complain_overflow_signed, /* complain_on_overflow */
488 ppc_elf_unhandled_reloc, /* special_function */
489 "R_PPC_PLTREL24", /* name */
490 FALSE, /* partial_inplace */
491 0, /* src_mask */
492 0x3fffffc, /* dst_mask */
493 TRUE), /* pcrel_offset */
494
495 /* This is used only by the dynamic linker. The symbol should exist
496 both in the object being run and in some shared library. The
497 dynamic linker copies the data addressed by the symbol from the
498 shared library into the object, because the object being
499 run has to have the data at some particular address. */
500 HOWTO (R_PPC_COPY, /* type */
501 0, /* rightshift */
502 2, /* size (0 = byte, 1 = short, 2 = long) */
503 32, /* bitsize */
504 FALSE, /* pc_relative */
505 0, /* bitpos */
506 complain_overflow_dont, /* complain_on_overflow */
507 ppc_elf_unhandled_reloc, /* special_function */
508 "R_PPC_COPY", /* name */
509 FALSE, /* partial_inplace */
510 0, /* src_mask */
511 0, /* dst_mask */
512 FALSE), /* pcrel_offset */
513
514 /* Like R_PPC_ADDR32, but used when setting global offset table
515 entries. */
516 HOWTO (R_PPC_GLOB_DAT, /* type */
517 0, /* rightshift */
518 2, /* size (0 = byte, 1 = short, 2 = long) */
519 32, /* bitsize */
520 FALSE, /* pc_relative */
521 0, /* bitpos */
522 complain_overflow_dont, /* complain_on_overflow */
523 ppc_elf_unhandled_reloc, /* special_function */
524 "R_PPC_GLOB_DAT", /* name */
525 FALSE, /* partial_inplace */
526 0, /* src_mask */
527 0xffffffff, /* dst_mask */
528 FALSE), /* pcrel_offset */
529
530 /* Marks a procedure linkage table entry for a symbol. */
531 HOWTO (R_PPC_JMP_SLOT, /* type */
532 0, /* rightshift */
533 2, /* size (0 = byte, 1 = short, 2 = long) */
534 32, /* bitsize */
535 FALSE, /* pc_relative */
536 0, /* bitpos */
537 complain_overflow_dont, /* complain_on_overflow */
538 ppc_elf_unhandled_reloc, /* special_function */
539 "R_PPC_JMP_SLOT", /* name */
540 FALSE, /* partial_inplace */
541 0, /* src_mask */
542 0, /* dst_mask */
543 FALSE), /* pcrel_offset */
544
545 /* Used only by the dynamic linker. When the object is run, this
546 longword is set to the load address of the object, plus the
547 addend. */
548 HOWTO (R_PPC_RELATIVE, /* type */
549 0, /* rightshift */
550 2, /* size (0 = byte, 1 = short, 2 = long) */
551 32, /* bitsize */
552 FALSE, /* pc_relative */
553 0, /* bitpos */
554 complain_overflow_dont, /* complain_on_overflow */
555 bfd_elf_generic_reloc, /* special_function */
556 "R_PPC_RELATIVE", /* name */
557 FALSE, /* partial_inplace */
558 0, /* src_mask */
559 0xffffffff, /* dst_mask */
560 FALSE), /* pcrel_offset */
561
562 /* Like R_PPC_REL24, but uses the value of the symbol within the
563 object rather than the final value. Normally used for
564 _GLOBAL_OFFSET_TABLE_. */
565 HOWTO (R_PPC_LOCAL24PC, /* type */
566 0, /* rightshift */
567 2, /* size (0 = byte, 1 = short, 2 = long) */
568 26, /* bitsize */
569 TRUE, /* pc_relative */
570 0, /* bitpos */
571 complain_overflow_signed, /* complain_on_overflow */
572 bfd_elf_generic_reloc, /* special_function */
573 "R_PPC_LOCAL24PC", /* name */
574 FALSE, /* partial_inplace */
575 0, /* src_mask */
576 0x3fffffc, /* dst_mask */
577 TRUE), /* pcrel_offset */
578
579 /* Like R_PPC_ADDR32, but may be unaligned. */
580 HOWTO (R_PPC_UADDR32, /* type */
581 0, /* rightshift */
582 2, /* size (0 = byte, 1 = short, 2 = long) */
583 32, /* bitsize */
584 FALSE, /* pc_relative */
585 0, /* bitpos */
586 complain_overflow_dont, /* complain_on_overflow */
587 bfd_elf_generic_reloc, /* special_function */
588 "R_PPC_UADDR32", /* name */
589 FALSE, /* partial_inplace */
590 0, /* src_mask */
591 0xffffffff, /* dst_mask */
592 FALSE), /* pcrel_offset */
593
594 /* Like R_PPC_ADDR16, but may be unaligned. */
595 HOWTO (R_PPC_UADDR16, /* type */
596 0, /* rightshift */
597 1, /* size (0 = byte, 1 = short, 2 = long) */
598 16, /* bitsize */
599 FALSE, /* pc_relative */
600 0, /* bitpos */
601 complain_overflow_bitfield, /* complain_on_overflow */
602 bfd_elf_generic_reloc, /* special_function */
603 "R_PPC_UADDR16", /* name */
604 FALSE, /* partial_inplace */
605 0, /* src_mask */
606 0xffff, /* dst_mask */
607 FALSE), /* pcrel_offset */
608
609 /* 32-bit PC relative */
610 HOWTO (R_PPC_REL32, /* type */
611 0, /* rightshift */
612 2, /* size (0 = byte, 1 = short, 2 = long) */
613 32, /* bitsize */
614 TRUE, /* pc_relative */
615 0, /* bitpos */
616 complain_overflow_dont, /* complain_on_overflow */
617 bfd_elf_generic_reloc, /* special_function */
618 "R_PPC_REL32", /* name */
619 FALSE, /* partial_inplace */
620 0, /* src_mask */
621 0xffffffff, /* dst_mask */
622 TRUE), /* pcrel_offset */
623
624 /* 32-bit relocation to the symbol's procedure linkage table.
625 FIXME: not supported. */
626 HOWTO (R_PPC_PLT32, /* type */
627 0, /* rightshift */
628 2, /* size (0 = byte, 1 = short, 2 = long) */
629 32, /* bitsize */
630 FALSE, /* pc_relative */
631 0, /* bitpos */
632 complain_overflow_dont, /* complain_on_overflow */
633 ppc_elf_unhandled_reloc, /* special_function */
634 "R_PPC_PLT32", /* name */
635 FALSE, /* partial_inplace */
636 0, /* src_mask */
637 0, /* dst_mask */
638 FALSE), /* pcrel_offset */
639
640 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
641 FIXME: not supported. */
642 HOWTO (R_PPC_PLTREL32, /* type */
643 0, /* rightshift */
644 2, /* size (0 = byte, 1 = short, 2 = long) */
645 32, /* bitsize */
646 TRUE, /* pc_relative */
647 0, /* bitpos */
648 complain_overflow_dont, /* complain_on_overflow */
649 ppc_elf_unhandled_reloc, /* special_function */
650 "R_PPC_PLTREL32", /* name */
651 FALSE, /* partial_inplace */
652 0, /* src_mask */
653 0, /* dst_mask */
654 TRUE), /* pcrel_offset */
655
656 /* Like R_PPC_ADDR16_LO, but referring to the PLT table entry for
657 the symbol. */
658 HOWTO (R_PPC_PLT16_LO, /* type */
659 0, /* rightshift */
660 1, /* size (0 = byte, 1 = short, 2 = long) */
661 16, /* bitsize */
662 FALSE, /* pc_relative */
663 0, /* bitpos */
664 complain_overflow_dont, /* complain_on_overflow */
665 ppc_elf_unhandled_reloc, /* special_function */
666 "R_PPC_PLT16_LO", /* name */
667 FALSE, /* partial_inplace */
668 0, /* src_mask */
669 0xffff, /* dst_mask */
670 FALSE), /* pcrel_offset */
671
672 /* Like R_PPC_ADDR16_HI, but referring to the PLT table entry for
673 the symbol. */
674 HOWTO (R_PPC_PLT16_HI, /* type */
675 16, /* rightshift */
676 1, /* size (0 = byte, 1 = short, 2 = long) */
677 16, /* bitsize */
678 FALSE, /* pc_relative */
679 0, /* bitpos */
680 complain_overflow_dont, /* complain_on_overflow */
681 ppc_elf_unhandled_reloc, /* special_function */
682 "R_PPC_PLT16_HI", /* name */
683 FALSE, /* partial_inplace */
684 0, /* src_mask */
685 0xffff, /* dst_mask */
686 FALSE), /* pcrel_offset */
687
688 /* Like R_PPC_ADDR16_HA, but referring to the PLT table entry for
689 the symbol. */
690 HOWTO (R_PPC_PLT16_HA, /* type */
691 16, /* rightshift */
692 1, /* size (0 = byte, 1 = short, 2 = long) */
693 16, /* bitsize */
694 FALSE, /* pc_relative */
695 0, /* bitpos */
696 complain_overflow_dont, /* complain_on_overflow */
697 ppc_elf_unhandled_reloc, /* special_function */
698 "R_PPC_PLT16_HA", /* name */
699 FALSE, /* partial_inplace */
700 0, /* src_mask */
701 0xffff, /* dst_mask */
702 FALSE), /* pcrel_offset */
703
704 /* A sign-extended 16 bit value relative to _SDA_BASE_, for use with
705 small data items. */
706 HOWTO (R_PPC_SDAREL16, /* type */
707 0, /* rightshift */
708 1, /* size (0 = byte, 1 = short, 2 = long) */
709 16, /* bitsize */
710 FALSE, /* pc_relative */
711 0, /* bitpos */
712 complain_overflow_signed, /* complain_on_overflow */
713 ppc_elf_unhandled_reloc, /* special_function */
714 "R_PPC_SDAREL16", /* name */
715 FALSE, /* partial_inplace */
716 0, /* src_mask */
717 0xffff, /* dst_mask */
718 FALSE), /* pcrel_offset */
719
720 /* 16-bit section relative relocation. */
721 HOWTO (R_PPC_SECTOFF, /* type */
722 0, /* rightshift */
723 1, /* size (0 = byte, 1 = short, 2 = long) */
724 16, /* bitsize */
725 FALSE, /* pc_relative */
726 0, /* bitpos */
727 complain_overflow_signed, /* complain_on_overflow */
728 ppc_elf_unhandled_reloc, /* special_function */
729 "R_PPC_SECTOFF", /* name */
730 FALSE, /* partial_inplace */
731 0, /* src_mask */
732 0xffff, /* dst_mask */
733 FALSE), /* pcrel_offset */
734
735 /* 16-bit lower half section relative relocation. */
736 HOWTO (R_PPC_SECTOFF_LO, /* type */
737 0, /* rightshift */
738 1, /* size (0 = byte, 1 = short, 2 = long) */
739 16, /* bitsize */
740 FALSE, /* pc_relative */
741 0, /* bitpos */
742 complain_overflow_dont, /* complain_on_overflow */
743 ppc_elf_unhandled_reloc, /* special_function */
744 "R_PPC_SECTOFF_LO", /* name */
745 FALSE, /* partial_inplace */
746 0, /* src_mask */
747 0xffff, /* dst_mask */
748 FALSE), /* pcrel_offset */
749
750 /* 16-bit upper half section relative relocation. */
751 HOWTO (R_PPC_SECTOFF_HI, /* type */
752 16, /* rightshift */
753 1, /* size (0 = byte, 1 = short, 2 = long) */
754 16, /* bitsize */
755 FALSE, /* pc_relative */
756 0, /* bitpos */
757 complain_overflow_dont, /* complain_on_overflow */
758 ppc_elf_unhandled_reloc, /* special_function */
759 "R_PPC_SECTOFF_HI", /* name */
760 FALSE, /* partial_inplace */
761 0, /* src_mask */
762 0xffff, /* dst_mask */
763 FALSE), /* pcrel_offset */
764
765 /* 16-bit upper half adjusted section relative relocation. */
766 HOWTO (R_PPC_SECTOFF_HA, /* type */
767 16, /* rightshift */
768 1, /* size (0 = byte, 1 = short, 2 = long) */
769 16, /* bitsize */
770 FALSE, /* pc_relative */
771 0, /* bitpos */
772 complain_overflow_dont, /* complain_on_overflow */
773 ppc_elf_unhandled_reloc, /* special_function */
774 "R_PPC_SECTOFF_HA", /* name */
775 FALSE, /* partial_inplace */
776 0, /* src_mask */
777 0xffff, /* dst_mask */
778 FALSE), /* pcrel_offset */
779
780 /* Marker relocs for TLS. */
781 HOWTO (R_PPC_TLS,
782 0, /* rightshift */
783 2, /* size (0 = byte, 1 = short, 2 = long) */
784 32, /* bitsize */
785 FALSE, /* pc_relative */
786 0, /* bitpos */
787 complain_overflow_dont, /* complain_on_overflow */
788 bfd_elf_generic_reloc, /* special_function */
789 "R_PPC_TLS", /* name */
790 FALSE, /* partial_inplace */
791 0, /* src_mask */
792 0, /* dst_mask */
793 FALSE), /* pcrel_offset */
794
795 HOWTO (R_PPC_TLSGD,
796 0, /* rightshift */
797 2, /* size (0 = byte, 1 = short, 2 = long) */
798 32, /* bitsize */
799 FALSE, /* pc_relative */
800 0, /* bitpos */
801 complain_overflow_dont, /* complain_on_overflow */
802 bfd_elf_generic_reloc, /* special_function */
803 "R_PPC_TLSGD", /* name */
804 FALSE, /* partial_inplace */
805 0, /* src_mask */
806 0, /* dst_mask */
807 FALSE), /* pcrel_offset */
808
809 HOWTO (R_PPC_TLSLD,
810 0, /* rightshift */
811 2, /* size (0 = byte, 1 = short, 2 = long) */
812 32, /* bitsize */
813 FALSE, /* pc_relative */
814 0, /* bitpos */
815 complain_overflow_dont, /* complain_on_overflow */
816 bfd_elf_generic_reloc, /* special_function */
817 "R_PPC_TLSLD", /* name */
818 FALSE, /* partial_inplace */
819 0, /* src_mask */
820 0, /* dst_mask */
821 FALSE), /* pcrel_offset */
822
823 /* Computes the load module index of the load module that contains the
824 definition of its TLS sym. */
825 HOWTO (R_PPC_DTPMOD32,
826 0, /* rightshift */
827 2, /* size (0 = byte, 1 = short, 2 = long) */
828 32, /* bitsize */
829 FALSE, /* pc_relative */
830 0, /* bitpos */
831 complain_overflow_dont, /* complain_on_overflow */
832 ppc_elf_unhandled_reloc, /* special_function */
833 "R_PPC_DTPMOD32", /* name */
834 FALSE, /* partial_inplace */
835 0, /* src_mask */
836 0xffffffff, /* dst_mask */
837 FALSE), /* pcrel_offset */
838
839 /* Computes a dtv-relative displacement, the difference between the value
840 of sym+add and the base address of the thread-local storage block that
841 contains the definition of sym, minus 0x8000. */
842 HOWTO (R_PPC_DTPREL32,
843 0, /* rightshift */
844 2, /* size (0 = byte, 1 = short, 2 = long) */
845 32, /* bitsize */
846 FALSE, /* pc_relative */
847 0, /* bitpos */
848 complain_overflow_dont, /* complain_on_overflow */
849 ppc_elf_unhandled_reloc, /* special_function */
850 "R_PPC_DTPREL32", /* name */
851 FALSE, /* partial_inplace */
852 0, /* src_mask */
853 0xffffffff, /* dst_mask */
854 FALSE), /* pcrel_offset */
855
856 /* A 16 bit dtprel reloc. */
857 HOWTO (R_PPC_DTPREL16,
858 0, /* rightshift */
859 1, /* size (0 = byte, 1 = short, 2 = long) */
860 16, /* bitsize */
861 FALSE, /* pc_relative */
862 0, /* bitpos */
863 complain_overflow_signed, /* complain_on_overflow */
864 ppc_elf_unhandled_reloc, /* special_function */
865 "R_PPC_DTPREL16", /* name */
866 FALSE, /* partial_inplace */
867 0, /* src_mask */
868 0xffff, /* dst_mask */
869 FALSE), /* pcrel_offset */
870
871 /* Like DTPREL16, but no overflow. */
872 HOWTO (R_PPC_DTPREL16_LO,
873 0, /* rightshift */
874 1, /* size (0 = byte, 1 = short, 2 = long) */
875 16, /* bitsize */
876 FALSE, /* pc_relative */
877 0, /* bitpos */
878 complain_overflow_dont, /* complain_on_overflow */
879 ppc_elf_unhandled_reloc, /* special_function */
880 "R_PPC_DTPREL16_LO", /* name */
881 FALSE, /* partial_inplace */
882 0, /* src_mask */
883 0xffff, /* dst_mask */
884 FALSE), /* pcrel_offset */
885
886 /* Like DTPREL16_LO, but next higher group of 16 bits. */
887 HOWTO (R_PPC_DTPREL16_HI,
888 16, /* rightshift */
889 1, /* size (0 = byte, 1 = short, 2 = long) */
890 16, /* bitsize */
891 FALSE, /* pc_relative */
892 0, /* bitpos */
893 complain_overflow_dont, /* complain_on_overflow */
894 ppc_elf_unhandled_reloc, /* special_function */
895 "R_PPC_DTPREL16_HI", /* name */
896 FALSE, /* partial_inplace */
897 0, /* src_mask */
898 0xffff, /* dst_mask */
899 FALSE), /* pcrel_offset */
900
901 /* Like DTPREL16_HI, but adjust for low 16 bits. */
902 HOWTO (R_PPC_DTPREL16_HA,
903 16, /* rightshift */
904 1, /* size (0 = byte, 1 = short, 2 = long) */
905 16, /* bitsize */
906 FALSE, /* pc_relative */
907 0, /* bitpos */
908 complain_overflow_dont, /* complain_on_overflow */
909 ppc_elf_unhandled_reloc, /* special_function */
910 "R_PPC_DTPREL16_HA", /* name */
911 FALSE, /* partial_inplace */
912 0, /* src_mask */
913 0xffff, /* dst_mask */
914 FALSE), /* pcrel_offset */
915
916 /* Computes a tp-relative displacement, the difference between the value of
917 sym+add and the value of the thread pointer (r13). */
918 HOWTO (R_PPC_TPREL32,
919 0, /* rightshift */
920 2, /* size (0 = byte, 1 = short, 2 = long) */
921 32, /* bitsize */
922 FALSE, /* pc_relative */
923 0, /* bitpos */
924 complain_overflow_dont, /* complain_on_overflow */
925 ppc_elf_unhandled_reloc, /* special_function */
926 "R_PPC_TPREL32", /* name */
927 FALSE, /* partial_inplace */
928 0, /* src_mask */
929 0xffffffff, /* dst_mask */
930 FALSE), /* pcrel_offset */
931
932 /* A 16 bit tprel reloc. */
933 HOWTO (R_PPC_TPREL16,
934 0, /* rightshift */
935 1, /* size (0 = byte, 1 = short, 2 = long) */
936 16, /* bitsize */
937 FALSE, /* pc_relative */
938 0, /* bitpos */
939 complain_overflow_signed, /* complain_on_overflow */
940 ppc_elf_unhandled_reloc, /* special_function */
941 "R_PPC_TPREL16", /* name */
942 FALSE, /* partial_inplace */
943 0, /* src_mask */
944 0xffff, /* dst_mask */
945 FALSE), /* pcrel_offset */
946
947 /* Like TPREL16, but no overflow. */
948 HOWTO (R_PPC_TPREL16_LO,
949 0, /* rightshift */
950 1, /* size (0 = byte, 1 = short, 2 = long) */
951 16, /* bitsize */
952 FALSE, /* pc_relative */
953 0, /* bitpos */
954 complain_overflow_dont, /* complain_on_overflow */
955 ppc_elf_unhandled_reloc, /* special_function */
956 "R_PPC_TPREL16_LO", /* name */
957 FALSE, /* partial_inplace */
958 0, /* src_mask */
959 0xffff, /* dst_mask */
960 FALSE), /* pcrel_offset */
961
962 /* Like TPREL16_LO, but next higher group of 16 bits. */
963 HOWTO (R_PPC_TPREL16_HI,
964 16, /* rightshift */
965 1, /* size (0 = byte, 1 = short, 2 = long) */
966 16, /* bitsize */
967 FALSE, /* pc_relative */
968 0, /* bitpos */
969 complain_overflow_dont, /* complain_on_overflow */
970 ppc_elf_unhandled_reloc, /* special_function */
971 "R_PPC_TPREL16_HI", /* name */
972 FALSE, /* partial_inplace */
973 0, /* src_mask */
974 0xffff, /* dst_mask */
975 FALSE), /* pcrel_offset */
976
977 /* Like TPREL16_HI, but adjust for low 16 bits. */
978 HOWTO (R_PPC_TPREL16_HA,
979 16, /* rightshift */
980 1, /* size (0 = byte, 1 = short, 2 = long) */
981 16, /* bitsize */
982 FALSE, /* pc_relative */
983 0, /* bitpos */
984 complain_overflow_dont, /* complain_on_overflow */
985 ppc_elf_unhandled_reloc, /* special_function */
986 "R_PPC_TPREL16_HA", /* name */
987 FALSE, /* partial_inplace */
988 0, /* src_mask */
989 0xffff, /* dst_mask */
990 FALSE), /* pcrel_offset */
991
992 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
993 with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
994 to the first entry. */
995 HOWTO (R_PPC_GOT_TLSGD16,
996 0, /* rightshift */
997 1, /* size (0 = byte, 1 = short, 2 = long) */
998 16, /* bitsize */
999 FALSE, /* pc_relative */
1000 0, /* bitpos */
1001 complain_overflow_signed, /* complain_on_overflow */
1002 ppc_elf_unhandled_reloc, /* special_function */
1003 "R_PPC_GOT_TLSGD16", /* name */
1004 FALSE, /* partial_inplace */
1005 0, /* src_mask */
1006 0xffff, /* dst_mask */
1007 FALSE), /* pcrel_offset */
1008
1009 /* Like GOT_TLSGD16, but no overflow. */
1010 HOWTO (R_PPC_GOT_TLSGD16_LO,
1011 0, /* rightshift */
1012 1, /* size (0 = byte, 1 = short, 2 = long) */
1013 16, /* bitsize */
1014 FALSE, /* pc_relative */
1015 0, /* bitpos */
1016 complain_overflow_dont, /* complain_on_overflow */
1017 ppc_elf_unhandled_reloc, /* special_function */
1018 "R_PPC_GOT_TLSGD16_LO", /* name */
1019 FALSE, /* partial_inplace */
1020 0, /* src_mask */
1021 0xffff, /* dst_mask */
1022 FALSE), /* pcrel_offset */
1023
1024 /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
1025 HOWTO (R_PPC_GOT_TLSGD16_HI,
1026 16, /* rightshift */
1027 1, /* size (0 = byte, 1 = short, 2 = long) */
1028 16, /* bitsize */
1029 FALSE, /* pc_relative */
1030 0, /* bitpos */
1031 complain_overflow_dont, /* complain_on_overflow */
1032 ppc_elf_unhandled_reloc, /* special_function */
1033 "R_PPC_GOT_TLSGD16_HI", /* name */
1034 FALSE, /* partial_inplace */
1035 0, /* src_mask */
1036 0xffff, /* dst_mask */
1037 FALSE), /* pcrel_offset */
1038
1039 /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
1040 HOWTO (R_PPC_GOT_TLSGD16_HA,
1041 16, /* rightshift */
1042 1, /* size (0 = byte, 1 = short, 2 = long) */
1043 16, /* bitsize */
1044 FALSE, /* pc_relative */
1045 0, /* bitpos */
1046 complain_overflow_dont, /* complain_on_overflow */
1047 ppc_elf_unhandled_reloc, /* special_function */
1048 "R_PPC_GOT_TLSGD16_HA", /* name */
1049 FALSE, /* partial_inplace */
1050 0, /* src_mask */
1051 0xffff, /* dst_mask */
1052 FALSE), /* pcrel_offset */
1053
1054 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1055 with values (sym+add)@dtpmod and zero, and computes the offset to the
1056 first entry. */
1057 HOWTO (R_PPC_GOT_TLSLD16,
1058 0, /* rightshift */
1059 1, /* size (0 = byte, 1 = short, 2 = long) */
1060 16, /* bitsize */
1061 FALSE, /* pc_relative */
1062 0, /* bitpos */
1063 complain_overflow_signed, /* complain_on_overflow */
1064 ppc_elf_unhandled_reloc, /* special_function */
1065 "R_PPC_GOT_TLSLD16", /* name */
1066 FALSE, /* partial_inplace */
1067 0, /* src_mask */
1068 0xffff, /* dst_mask */
1069 FALSE), /* pcrel_offset */
1070
1071 /* Like GOT_TLSLD16, but no overflow. */
1072 HOWTO (R_PPC_GOT_TLSLD16_LO,
1073 0, /* rightshift */
1074 1, /* size (0 = byte, 1 = short, 2 = long) */
1075 16, /* bitsize */
1076 FALSE, /* pc_relative */
1077 0, /* bitpos */
1078 complain_overflow_dont, /* complain_on_overflow */
1079 ppc_elf_unhandled_reloc, /* special_function */
1080 "R_PPC_GOT_TLSLD16_LO", /* name */
1081 FALSE, /* partial_inplace */
1082 0, /* src_mask */
1083 0xffff, /* dst_mask */
1084 FALSE), /* pcrel_offset */
1085
1086 /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
1087 HOWTO (R_PPC_GOT_TLSLD16_HI,
1088 16, /* rightshift */
1089 1, /* size (0 = byte, 1 = short, 2 = long) */
1090 16, /* bitsize */
1091 FALSE, /* pc_relative */
1092 0, /* bitpos */
1093 complain_overflow_dont, /* complain_on_overflow */
1094 ppc_elf_unhandled_reloc, /* special_function */
1095 "R_PPC_GOT_TLSLD16_HI", /* name */
1096 FALSE, /* partial_inplace */
1097 0, /* src_mask */
1098 0xffff, /* dst_mask */
1099 FALSE), /* pcrel_offset */
1100
1101 /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
1102 HOWTO (R_PPC_GOT_TLSLD16_HA,
1103 16, /* rightshift */
1104 1, /* size (0 = byte, 1 = short, 2 = long) */
1105 16, /* bitsize */
1106 FALSE, /* pc_relative */
1107 0, /* bitpos */
1108 complain_overflow_dont, /* complain_on_overflow */
1109 ppc_elf_unhandled_reloc, /* special_function */
1110 "R_PPC_GOT_TLSLD16_HA", /* name */
1111 FALSE, /* partial_inplace */
1112 0, /* src_mask */
1113 0xffff, /* dst_mask */
1114 FALSE), /* pcrel_offset */
1115
1116 /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
1117 the offset to the entry. */
1118 HOWTO (R_PPC_GOT_DTPREL16,
1119 0, /* rightshift */
1120 1, /* size (0 = byte, 1 = short, 2 = long) */
1121 16, /* bitsize */
1122 FALSE, /* pc_relative */
1123 0, /* bitpos */
1124 complain_overflow_signed, /* complain_on_overflow */
1125 ppc_elf_unhandled_reloc, /* special_function */
1126 "R_PPC_GOT_DTPREL16", /* name */
1127 FALSE, /* partial_inplace */
1128 0, /* src_mask */
1129 0xffff, /* dst_mask */
1130 FALSE), /* pcrel_offset */
1131
1132 /* Like GOT_DTPREL16, but no overflow. */
1133 HOWTO (R_PPC_GOT_DTPREL16_LO,
1134 0, /* rightshift */
1135 1, /* size (0 = byte, 1 = short, 2 = long) */
1136 16, /* bitsize */
1137 FALSE, /* pc_relative */
1138 0, /* bitpos */
1139 complain_overflow_dont, /* complain_on_overflow */
1140 ppc_elf_unhandled_reloc, /* special_function */
1141 "R_PPC_GOT_DTPREL16_LO", /* name */
1142 FALSE, /* partial_inplace */
1143 0, /* src_mask */
1144 0xffff, /* dst_mask */
1145 FALSE), /* pcrel_offset */
1146
1147 /* Like GOT_DTPREL16_LO, but next higher group of 16 bits. */
1148 HOWTO (R_PPC_GOT_DTPREL16_HI,
1149 16, /* rightshift */
1150 1, /* size (0 = byte, 1 = short, 2 = long) */
1151 16, /* bitsize */
1152 FALSE, /* pc_relative */
1153 0, /* bitpos */
1154 complain_overflow_dont, /* complain_on_overflow */
1155 ppc_elf_unhandled_reloc, /* special_function */
1156 "R_PPC_GOT_DTPREL16_HI", /* name */
1157 FALSE, /* partial_inplace */
1158 0, /* src_mask */
1159 0xffff, /* dst_mask */
1160 FALSE), /* pcrel_offset */
1161
1162 /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
1163 HOWTO (R_PPC_GOT_DTPREL16_HA,
1164 16, /* rightshift */
1165 1, /* size (0 = byte, 1 = short, 2 = long) */
1166 16, /* bitsize */
1167 FALSE, /* pc_relative */
1168 0, /* bitpos */
1169 complain_overflow_dont, /* complain_on_overflow */
1170 ppc_elf_unhandled_reloc, /* special_function */
1171 "R_PPC_GOT_DTPREL16_HA", /* name */
1172 FALSE, /* partial_inplace */
1173 0, /* src_mask */
1174 0xffff, /* dst_mask */
1175 FALSE), /* pcrel_offset */
1176
1177 /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
1178 offset to the entry. */
1179 HOWTO (R_PPC_GOT_TPREL16,
1180 0, /* rightshift */
1181 1, /* size (0 = byte, 1 = short, 2 = long) */
1182 16, /* bitsize */
1183 FALSE, /* pc_relative */
1184 0, /* bitpos */
1185 complain_overflow_signed, /* complain_on_overflow */
1186 ppc_elf_unhandled_reloc, /* special_function */
1187 "R_PPC_GOT_TPREL16", /* name */
1188 FALSE, /* partial_inplace */
1189 0, /* src_mask */
1190 0xffff, /* dst_mask */
1191 FALSE), /* pcrel_offset */
1192
1193 /* Like GOT_TPREL16, but no overflow. */
1194 HOWTO (R_PPC_GOT_TPREL16_LO,
1195 0, /* rightshift */
1196 1, /* size (0 = byte, 1 = short, 2 = long) */
1197 16, /* bitsize */
1198 FALSE, /* pc_relative */
1199 0, /* bitpos */
1200 complain_overflow_dont, /* complain_on_overflow */
1201 ppc_elf_unhandled_reloc, /* special_function */
1202 "R_PPC_GOT_TPREL16_LO", /* name */
1203 FALSE, /* partial_inplace */
1204 0, /* src_mask */
1205 0xffff, /* dst_mask */
1206 FALSE), /* pcrel_offset */
1207
1208 /* Like GOT_TPREL16_LO, but next higher group of 16 bits. */
1209 HOWTO (R_PPC_GOT_TPREL16_HI,
1210 16, /* rightshift */
1211 1, /* size (0 = byte, 1 = short, 2 = long) */
1212 16, /* bitsize */
1213 FALSE, /* pc_relative */
1214 0, /* bitpos */
1215 complain_overflow_dont, /* complain_on_overflow */
1216 ppc_elf_unhandled_reloc, /* special_function */
1217 "R_PPC_GOT_TPREL16_HI", /* name */
1218 FALSE, /* partial_inplace */
1219 0, /* src_mask */
1220 0xffff, /* dst_mask */
1221 FALSE), /* pcrel_offset */
1222
1223 /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
1224 HOWTO (R_PPC_GOT_TPREL16_HA,
1225 16, /* rightshift */
1226 1, /* size (0 = byte, 1 = short, 2 = long) */
1227 16, /* bitsize */
1228 FALSE, /* pc_relative */
1229 0, /* bitpos */
1230 complain_overflow_dont, /* complain_on_overflow */
1231 ppc_elf_unhandled_reloc, /* special_function */
1232 "R_PPC_GOT_TPREL16_HA", /* name */
1233 FALSE, /* partial_inplace */
1234 0, /* src_mask */
1235 0xffff, /* dst_mask */
1236 FALSE), /* pcrel_offset */
1237
1238 /* The remaining relocs are from the Embedded ELF ABI, and are not
1239 in the SVR4 ELF ABI. */
1240
1241 /* 32 bit value resulting from the addend minus the symbol. */
1242 HOWTO (R_PPC_EMB_NADDR32, /* type */
1243 0, /* rightshift */
1244 2, /* size (0 = byte, 1 = short, 2 = long) */
1245 32, /* bitsize */
1246 FALSE, /* pc_relative */
1247 0, /* bitpos */
1248 complain_overflow_dont, /* complain_on_overflow */
1249 ppc_elf_unhandled_reloc, /* special_function */
1250 "R_PPC_EMB_NADDR32", /* name */
1251 FALSE, /* partial_inplace */
1252 0, /* src_mask */
1253 0xffffffff, /* dst_mask */
1254 FALSE), /* pcrel_offset */
1255
1256 /* 16 bit value resulting from the addend minus the symbol. */
1257 HOWTO (R_PPC_EMB_NADDR16, /* type */
1258 0, /* rightshift */
1259 1, /* size (0 = byte, 1 = short, 2 = long) */
1260 16, /* bitsize */
1261 FALSE, /* pc_relative */
1262 0, /* bitpos */
1263 complain_overflow_signed, /* complain_on_overflow */
1264 ppc_elf_unhandled_reloc, /* special_function */
1265 "R_PPC_EMB_NADDR16", /* name */
1266 FALSE, /* partial_inplace */
1267 0, /* src_mask */
1268 0xffff, /* dst_mask */
1269 FALSE), /* pcrel_offset */
1270
1271 /* 16 bit value resulting from the addend minus the symbol. */
1272 HOWTO (R_PPC_EMB_NADDR16_LO, /* type */
1273 0, /* rightshift */
1274 1, /* size (0 = byte, 1 = short, 2 = long) */
1275 16, /* bitsize */
1276 FALSE, /* pc_relative */
1277 0, /* bitpos */
1278 complain_overflow_dont,/* complain_on_overflow */
1279 ppc_elf_unhandled_reloc, /* special_function */
1280 "R_PPC_EMB_ADDR16_LO", /* name */
1281 FALSE, /* partial_inplace */
1282 0, /* src_mask */
1283 0xffff, /* dst_mask */
1284 FALSE), /* pcrel_offset */
1285
1286 /* The high order 16 bits of the addend minus the symbol. */
1287 HOWTO (R_PPC_EMB_NADDR16_HI, /* type */
1288 16, /* rightshift */
1289 1, /* size (0 = byte, 1 = short, 2 = long) */
1290 16, /* bitsize */
1291 FALSE, /* pc_relative */
1292 0, /* bitpos */
1293 complain_overflow_dont, /* complain_on_overflow */
1294 ppc_elf_unhandled_reloc, /* special_function */
1295 "R_PPC_EMB_NADDR16_HI", /* name */
1296 FALSE, /* partial_inplace */
1297 0, /* src_mask */
1298 0xffff, /* dst_mask */
1299 FALSE), /* pcrel_offset */
1300
1301 /* The high order 16 bits of the result of the addend minus the address,
1302 plus 1 if the contents of the low 16 bits, treated as a signed number,
1303 is negative. */
1304 HOWTO (R_PPC_EMB_NADDR16_HA, /* type */
1305 16, /* rightshift */
1306 1, /* size (0 = byte, 1 = short, 2 = long) */
1307 16, /* bitsize */
1308 FALSE, /* pc_relative */
1309 0, /* bitpos */
1310 complain_overflow_dont, /* complain_on_overflow */
1311 ppc_elf_unhandled_reloc, /* special_function */
1312 "R_PPC_EMB_NADDR16_HA", /* name */
1313 FALSE, /* partial_inplace */
1314 0, /* src_mask */
1315 0xffff, /* dst_mask */
1316 FALSE), /* pcrel_offset */
1317
1318 /* 16 bit value resulting from allocating a 4 byte word to hold an
1319 address in the .sdata section, and returning the offset from
1320 _SDA_BASE_ for that relocation. */
1321 HOWTO (R_PPC_EMB_SDAI16, /* type */
1322 0, /* rightshift */
1323 1, /* size (0 = byte, 1 = short, 2 = long) */
1324 16, /* bitsize */
1325 FALSE, /* pc_relative */
1326 0, /* bitpos */
1327 complain_overflow_signed, /* complain_on_overflow */
1328 ppc_elf_unhandled_reloc, /* special_function */
1329 "R_PPC_EMB_SDAI16", /* name */
1330 FALSE, /* partial_inplace */
1331 0, /* src_mask */
1332 0xffff, /* dst_mask */
1333 FALSE), /* pcrel_offset */
1334
1335 /* 16 bit value resulting from allocating a 4 byte word to hold an
1336 address in the .sdata2 section, and returning the offset from
1337 _SDA2_BASE_ for that relocation. */
1338 HOWTO (R_PPC_EMB_SDA2I16, /* type */
1339 0, /* rightshift */
1340 1, /* size (0 = byte, 1 = short, 2 = long) */
1341 16, /* bitsize */
1342 FALSE, /* pc_relative */
1343 0, /* bitpos */
1344 complain_overflow_signed, /* complain_on_overflow */
1345 ppc_elf_unhandled_reloc, /* special_function */
1346 "R_PPC_EMB_SDA2I16", /* name */
1347 FALSE, /* partial_inplace */
1348 0, /* src_mask */
1349 0xffff, /* dst_mask */
1350 FALSE), /* pcrel_offset */
1351
1352 /* A sign-extended 16 bit value relative to _SDA2_BASE_, for use with
1353 small data items. */
1354 HOWTO (R_PPC_EMB_SDA2REL, /* type */
1355 0, /* rightshift */
1356 1, /* size (0 = byte, 1 = short, 2 = long) */
1357 16, /* bitsize */
1358 FALSE, /* pc_relative */
1359 0, /* bitpos */
1360 complain_overflow_signed, /* complain_on_overflow */
1361 ppc_elf_unhandled_reloc, /* special_function */
1362 "R_PPC_EMB_SDA2REL", /* name */
1363 FALSE, /* partial_inplace */
1364 0, /* src_mask */
1365 0xffff, /* dst_mask */
1366 FALSE), /* pcrel_offset */
1367
1368 /* Relocate against either _SDA_BASE_ or _SDA2_BASE_, filling in the 16 bit
1369 signed offset from the appropriate base, and filling in the register
1370 field with the appropriate register (0, 2, or 13). */
1371 HOWTO (R_PPC_EMB_SDA21, /* type */
1372 0, /* rightshift */
1373 2, /* size (0 = byte, 1 = short, 2 = long) */
1374 16, /* bitsize */
1375 FALSE, /* pc_relative */
1376 0, /* bitpos */
1377 complain_overflow_signed, /* complain_on_overflow */
1378 ppc_elf_unhandled_reloc, /* special_function */
1379 "R_PPC_EMB_SDA21", /* name */
1380 FALSE, /* partial_inplace */
1381 0, /* src_mask */
1382 0xffff, /* dst_mask */
1383 FALSE), /* pcrel_offset */
1384
1385 /* Relocation not handled: R_PPC_EMB_MRKREF */
1386 /* Relocation not handled: R_PPC_EMB_RELSEC16 */
1387 /* Relocation not handled: R_PPC_EMB_RELST_LO */
1388 /* Relocation not handled: R_PPC_EMB_RELST_HI */
1389 /* Relocation not handled: R_PPC_EMB_RELST_HA */
1390 /* Relocation not handled: R_PPC_EMB_BIT_FLD */
1391
1392 /* PC relative relocation against either _SDA_BASE_ or _SDA2_BASE_, filling
1393 in the 16 bit signed offset from the appropriate base, and filling in the
1394 register field with the appropriate register (0, 2, or 13). */
1395 HOWTO (R_PPC_EMB_RELSDA, /* type */
1396 0, /* rightshift */
1397 1, /* size (0 = byte, 1 = short, 2 = long) */
1398 16, /* bitsize */
1399 FALSE, /* pc_relative */
1400 0, /* bitpos */
1401 complain_overflow_signed, /* complain_on_overflow */
1402 ppc_elf_unhandled_reloc, /* special_function */
1403 "R_PPC_EMB_RELSDA", /* name */
1404 FALSE, /* partial_inplace */
1405 0, /* src_mask */
1406 0xffff, /* dst_mask */
1407 FALSE), /* pcrel_offset */
1408
1409 /* A relative 8 bit branch. */
1410 HOWTO (R_PPC_VLE_REL8, /* type */
1411 1, /* rightshift */
1412 1, /* size (0 = byte, 1 = short, 2 = long) */
1413 8, /* bitsize */
1414 TRUE, /* pc_relative */
1415 0, /* bitpos */
1416 complain_overflow_signed, /* complain_on_overflow */
1417 bfd_elf_generic_reloc, /* special_function */
1418 "R_PPC_VLE_REL8", /* name */
1419 FALSE, /* partial_inplace */
1420 0, /* src_mask */
1421 0xff, /* dst_mask */
1422 TRUE), /* pcrel_offset */
1423
1424 /* A relative 15 bit branch. */
1425 HOWTO (R_PPC_VLE_REL15, /* type */
1426 1, /* rightshift */
1427 2, /* size (0 = byte, 1 = short, 2 = long) */
1428 15, /* bitsize */
1429 TRUE, /* pc_relative */
1430 1, /* bitpos */
1431 complain_overflow_signed, /* complain_on_overflow */
1432 bfd_elf_generic_reloc, /* special_function */
1433 "R_PPC_VLE_REL15", /* name */
1434 FALSE, /* partial_inplace */
1435 0, /* src_mask */
1436 0xfffe, /* dst_mask */
1437 TRUE), /* pcrel_offset */
1438
1439 /* A relative 24 bit branch. */
1440 HOWTO (R_PPC_VLE_REL24, /* type */
1441 1, /* rightshift */
1442 2, /* size (0 = byte, 1 = short, 2 = long) */
1443 24, /* bitsize */
1444 TRUE, /* pc_relative */
1445 1, /* bitpos */
1446 complain_overflow_signed, /* complain_on_overflow */
1447 bfd_elf_generic_reloc, /* special_function */
1448 "R_PPC_VLE_REL24", /* name */
1449 FALSE, /* partial_inplace */
1450 0, /* src_mask */
1451 0x1fffffe, /* dst_mask */
1452 TRUE), /* pcrel_offset */
1453
1454 /* The 16 LSBS in split16a format. */
1455 HOWTO (R_PPC_VLE_LO16A, /* type */
1456 0, /* rightshift */
1457 2, /* size (0 = byte, 1 = short, 2 = long) */
1458 16, /* bitsize */
1459 FALSE, /* pc_relative */
1460 0, /* bitpos */
1461 complain_overflow_dont, /* complain_on_overflow */
1462 ppc_elf_unhandled_reloc, /* special_function */
1463 "R_PPC_VLE_LO16A", /* name */
1464 FALSE, /* partial_inplace */
1465 0, /* src_mask */
1466 0x1f07ff, /* dst_mask */
1467 FALSE), /* pcrel_offset */
1468
1469 /* The 16 LSBS in split16d format. */
1470 HOWTO (R_PPC_VLE_LO16D, /* type */
1471 0, /* rightshift */
1472 2, /* size (0 = byte, 1 = short, 2 = long) */
1473 16, /* bitsize */
1474 FALSE, /* pc_relative */
1475 0, /* bitpos */
1476 complain_overflow_dont, /* complain_on_overflow */
1477 ppc_elf_unhandled_reloc, /* special_function */
1478 "R_PPC_VLE_LO16D", /* name */
1479 FALSE, /* partial_inplace */
1480 0, /* src_mask */
1481 0x3e007ff, /* dst_mask */
1482 FALSE), /* pcrel_offset */
1483
1484 /* Bits 16-31 split16a format. */
1485 HOWTO (R_PPC_VLE_HI16A, /* type */
1486 16, /* rightshift */
1487 2, /* size (0 = byte, 1 = short, 2 = long) */
1488 16, /* bitsize */
1489 FALSE, /* pc_relative */
1490 0, /* bitpos */
1491 complain_overflow_dont, /* complain_on_overflow */
1492 ppc_elf_unhandled_reloc, /* special_function */
1493 "R_PPC_VLE_HI16A", /* name */
1494 FALSE, /* partial_inplace */
1495 0, /* src_mask */
1496 0x1f07ff, /* dst_mask */
1497 FALSE), /* pcrel_offset */
1498
1499 /* Bits 16-31 split16d format. */
1500 HOWTO (R_PPC_VLE_HI16D, /* type */
1501 16, /* rightshift */
1502 2, /* size (0 = byte, 1 = short, 2 = long) */
1503 16, /* bitsize */
1504 FALSE, /* pc_relative */
1505 0, /* bitpos */
1506 complain_overflow_dont, /* complain_on_overflow */
1507 ppc_elf_unhandled_reloc, /* special_function */
1508 "R_PPC_VLE_HI16D", /* name */
1509 FALSE, /* partial_inplace */
1510 0, /* src_mask */
1511 0x3e007ff, /* dst_mask */
1512 FALSE), /* pcrel_offset */
1513
1514 /* Bits 16-31 (High Adjusted) in split16a format. */
1515 HOWTO (R_PPC_VLE_HA16A, /* type */
1516 16, /* rightshift */
1517 2, /* size (0 = byte, 1 = short, 2 = long) */
1518 16, /* bitsize */
1519 FALSE, /* pc_relative */
1520 0, /* bitpos */
1521 complain_overflow_dont, /* complain_on_overflow */
1522 ppc_elf_unhandled_reloc, /* special_function */
1523 "R_PPC_VLE_HA16A", /* name */
1524 FALSE, /* partial_inplace */
1525 0, /* src_mask */
1526 0x1f07ff, /* dst_mask */
1527 FALSE), /* pcrel_offset */
1528
1529 /* Bits 16-31 (High Adjusted) in split16d format. */
1530 HOWTO (R_PPC_VLE_HA16D, /* type */
1531 16, /* rightshift */
1532 2, /* size (0 = byte, 1 = short, 2 = long) */
1533 16, /* bitsize */
1534 FALSE, /* pc_relative */
1535 0, /* bitpos */
1536 complain_overflow_dont, /* complain_on_overflow */
1537 ppc_elf_unhandled_reloc, /* special_function */
1538 "R_PPC_VLE_HA16D", /* name */
1539 FALSE, /* partial_inplace */
1540 0, /* src_mask */
1541 0x3e007ff, /* dst_mask */
1542 FALSE), /* pcrel_offset */
1543
1544 /* This reloc is like R_PPC_EMB_SDA21 but only applies to e_add16i
1545 instructions. If the register base is 0 then the linker changes
1546 the e_add16i to an e_li instruction. */
1547 HOWTO (R_PPC_VLE_SDA21, /* type */
1548 0, /* rightshift */
1549 2, /* size (0 = byte, 1 = short, 2 = long) */
1550 16, /* bitsize */
1551 FALSE, /* pc_relative */
1552 0, /* bitpos */
1553 complain_overflow_signed, /* complain_on_overflow */
1554 ppc_elf_unhandled_reloc, /* special_function */
1555 "R_PPC_VLE_SDA21", /* name */
1556 FALSE, /* partial_inplace */
1557 0, /* src_mask */
1558 0xffff, /* dst_mask */
1559 FALSE), /* pcrel_offset */
1560
1561 /* Like R_PPC_VLE_SDA21 but ignore overflow. */
1562 HOWTO (R_PPC_VLE_SDA21_LO, /* type */
1563 0, /* rightshift */
1564 2, /* size (0 = byte, 1 = short, 2 = long) */
1565 16, /* bitsize */
1566 FALSE, /* pc_relative */
1567 0, /* bitpos */
1568 complain_overflow_dont, /* complain_on_overflow */
1569 ppc_elf_unhandled_reloc, /* special_function */
1570 "R_PPC_VLE_SDA21_LO", /* name */
1571 FALSE, /* partial_inplace */
1572 0, /* src_mask */
1573 0xffff, /* dst_mask */
1574 FALSE), /* pcrel_offset */
1575
1576 /* The 16 LSBS relative to _SDA_BASE_ in split16a format. */
1577 HOWTO (R_PPC_VLE_SDAREL_LO16A,/* type */
1578 0, /* rightshift */
1579 2, /* size (0 = byte, 1 = short, 2 = long) */
1580 16, /* bitsize */
1581 FALSE, /* pc_relative */
1582 0, /* bitpos */
1583 complain_overflow_dont, /* complain_on_overflow */
1584 ppc_elf_unhandled_reloc, /* special_function */
1585 "R_PPC_VLE_SDAREL_LO16A", /* name */
1586 FALSE, /* partial_inplace */
1587 0, /* src_mask */
1588 0x1f07ff, /* dst_mask */
1589 FALSE), /* pcrel_offset */
1590
1591 /* The 16 LSBS relative to _SDA_BASE_ in split16d format. */
1592 HOWTO (R_PPC_VLE_SDAREL_LO16D, /* type */
1593 0, /* rightshift */
1594 2, /* size (0 = byte, 1 = short, 2 = long) */
1595 16, /* bitsize */
1596 FALSE, /* pc_relative */
1597 0, /* bitpos */
1598 complain_overflow_dont, /* complain_on_overflow */
1599 ppc_elf_unhandled_reloc, /* special_function */
1600 "R_PPC_VLE_SDAREL_LO16D", /* name */
1601 FALSE, /* partial_inplace */
1602 0, /* src_mask */
1603 0x3e007ff, /* dst_mask */
1604 FALSE), /* pcrel_offset */
1605
1606 /* Bits 16-31 relative to _SDA_BASE_ in split16a format. */
1607 HOWTO (R_PPC_VLE_SDAREL_HI16A, /* type */
1608 16, /* rightshift */
1609 2, /* size (0 = byte, 1 = short, 2 = long) */
1610 16, /* bitsize */
1611 FALSE, /* pc_relative */
1612 0, /* bitpos */
1613 complain_overflow_dont, /* complain_on_overflow */
1614 ppc_elf_unhandled_reloc, /* special_function */
1615 "R_PPC_VLE_SDAREL_HI16A", /* name */
1616 FALSE, /* partial_inplace */
1617 0, /* src_mask */
1618 0x1f07ff, /* dst_mask */
1619 FALSE), /* pcrel_offset */
1620
1621 /* Bits 16-31 relative to _SDA_BASE_ in split16d format. */
1622 HOWTO (R_PPC_VLE_SDAREL_HI16D, /* type */
1623 16, /* rightshift */
1624 2, /* size (0 = byte, 1 = short, 2 = long) */
1625 16, /* bitsize */
1626 FALSE, /* pc_relative */
1627 0, /* bitpos */
1628 complain_overflow_dont, /* complain_on_overflow */
1629 ppc_elf_unhandled_reloc, /* special_function */
1630 "R_PPC_VLE_SDAREL_HI16D", /* name */
1631 FALSE, /* partial_inplace */
1632 0, /* src_mask */
1633 0x3e007ff, /* dst_mask */
1634 FALSE), /* pcrel_offset */
1635
1636 /* Bits 16-31 (HA) relative to _SDA_BASE split16a format. */
1637 HOWTO (R_PPC_VLE_SDAREL_HA16A, /* type */
1638 16, /* rightshift */
1639 2, /* size (0 = byte, 1 = short, 2 = long) */
1640 16, /* bitsize */
1641 FALSE, /* pc_relative */
1642 0, /* bitpos */
1643 complain_overflow_dont, /* complain_on_overflow */
1644 ppc_elf_unhandled_reloc, /* special_function */
1645 "R_PPC_VLE_SDAREL_HA16A", /* name */
1646 FALSE, /* partial_inplace */
1647 0, /* src_mask */
1648 0x1f07ff, /* dst_mask */
1649 FALSE), /* pcrel_offset */
1650
1651 /* Bits 16-31 (HA) relative to _SDA_BASE split16d format. */
1652 HOWTO (R_PPC_VLE_SDAREL_HA16D, /* type */
1653 16, /* rightshift */
1654 2, /* size (0 = byte, 1 = short, 2 = long) */
1655 16, /* bitsize */
1656 FALSE, /* pc_relative */
1657 0, /* bitpos */
1658 complain_overflow_dont, /* complain_on_overflow */
1659 ppc_elf_unhandled_reloc, /* special_function */
1660 "R_PPC_VLE_SDAREL_HA16D", /* name */
1661 FALSE, /* partial_inplace */
1662 0, /* src_mask */
1663 0x3e007ff, /* dst_mask */
1664 FALSE), /* pcrel_offset */
1665
1666 /* e_li split20 format. */
1667 HOWTO (R_PPC_VLE_ADDR20, /* type */
1668 16, /* rightshift */
1669 2, /* size (0 = byte, 1 = short, 2 = long) */
1670 20, /* bitsize */
1671 FALSE, /* pc_relative */
1672 0, /* bitpos */
1673 complain_overflow_dont, /* complain_on_overflow */
1674 bfd_elf_generic_reloc, /* special_function */
1675 "R_PPC_VLE_ADDR20", /* name */
1676 FALSE, /* partial_inplace */
1677 0, /* src_mask */
1678 0x1f07ff, /* dst_mask */
1679 FALSE), /* pcrel_offset */
1680
1681 HOWTO (R_PPC_IRELATIVE, /* type */
1682 0, /* rightshift */
1683 2, /* size (0 = byte, 1 = short, 2 = long) */
1684 32, /* bitsize */
1685 FALSE, /* pc_relative */
1686 0, /* bitpos */
1687 complain_overflow_dont, /* complain_on_overflow */
1688 ppc_elf_unhandled_reloc, /* special_function */
1689 "R_PPC_IRELATIVE", /* name */
1690 FALSE, /* partial_inplace */
1691 0, /* src_mask */
1692 0xffffffff, /* dst_mask */
1693 FALSE), /* pcrel_offset */
1694
1695 /* A 16 bit relative relocation. */
1696 HOWTO (R_PPC_REL16, /* type */
1697 0, /* rightshift */
1698 1, /* size (0 = byte, 1 = short, 2 = long) */
1699 16, /* bitsize */
1700 TRUE, /* pc_relative */
1701 0, /* bitpos */
1702 complain_overflow_signed, /* complain_on_overflow */
1703 bfd_elf_generic_reloc, /* special_function */
1704 "R_PPC_REL16", /* name */
1705 FALSE, /* partial_inplace */
1706 0, /* src_mask */
1707 0xffff, /* dst_mask */
1708 TRUE), /* pcrel_offset */
1709
1710 /* A 16 bit relative relocation without overflow. */
1711 HOWTO (R_PPC_REL16_LO, /* type */
1712 0, /* rightshift */
1713 1, /* size (0 = byte, 1 = short, 2 = long) */
1714 16, /* bitsize */
1715 TRUE, /* pc_relative */
1716 0, /* bitpos */
1717 complain_overflow_dont,/* complain_on_overflow */
1718 bfd_elf_generic_reloc, /* special_function */
1719 "R_PPC_REL16_LO", /* name */
1720 FALSE, /* partial_inplace */
1721 0, /* src_mask */
1722 0xffff, /* dst_mask */
1723 TRUE), /* pcrel_offset */
1724
1725 /* The high order 16 bits of a relative address. */
1726 HOWTO (R_PPC_REL16_HI, /* type */
1727 16, /* rightshift */
1728 1, /* size (0 = byte, 1 = short, 2 = long) */
1729 16, /* bitsize */
1730 TRUE, /* pc_relative */
1731 0, /* bitpos */
1732 complain_overflow_dont, /* complain_on_overflow */
1733 bfd_elf_generic_reloc, /* special_function */
1734 "R_PPC_REL16_HI", /* name */
1735 FALSE, /* partial_inplace */
1736 0, /* src_mask */
1737 0xffff, /* dst_mask */
1738 TRUE), /* pcrel_offset */
1739
1740 /* The high order 16 bits of a relative address, plus 1 if the contents of
1741 the low 16 bits, treated as a signed number, is negative. */
1742 HOWTO (R_PPC_REL16_HA, /* type */
1743 16, /* rightshift */
1744 1, /* size (0 = byte, 1 = short, 2 = long) */
1745 16, /* bitsize */
1746 TRUE, /* pc_relative */
1747 0, /* bitpos */
1748 complain_overflow_dont, /* complain_on_overflow */
1749 ppc_elf_addr16_ha_reloc, /* special_function */
1750 "R_PPC_REL16_HA", /* name */
1751 FALSE, /* partial_inplace */
1752 0, /* src_mask */
1753 0xffff, /* dst_mask */
1754 TRUE), /* pcrel_offset */
1755
1756 /* Like R_PPC_REL16_HA but for split field in addpcis. */
1757 HOWTO (R_PPC_REL16DX_HA, /* type */
1758 16, /* rightshift */
1759 2, /* size (0 = byte, 1 = short, 2 = long) */
1760 16, /* bitsize */
1761 TRUE, /* pc_relative */
1762 0, /* bitpos */
1763 complain_overflow_signed, /* complain_on_overflow */
1764 ppc_elf_addr16_ha_reloc, /* special_function */
1765 "R_PPC_REL16DX_HA", /* name */
1766 FALSE, /* partial_inplace */
1767 0, /* src_mask */
1768 0x1fffc1, /* dst_mask */
1769 TRUE), /* pcrel_offset */
1770
1771 /* A split-field reloc for addpcis, non-relative (gas internal use only). */
1772 HOWTO (R_PPC_16DX_HA, /* type */
1773 16, /* rightshift */
1774 2, /* size (0 = byte, 1 = short, 2 = long) */
1775 16, /* bitsize */
1776 FALSE, /* pc_relative */
1777 0, /* bitpos */
1778 complain_overflow_signed, /* complain_on_overflow */
1779 ppc_elf_addr16_ha_reloc, /* special_function */
1780 "R_PPC_16DX_HA", /* name */
1781 FALSE, /* partial_inplace */
1782 0, /* src_mask */
1783 0x1fffc1, /* dst_mask */
1784 FALSE), /* pcrel_offset */
1785
1786 /* GNU extension to record C++ vtable hierarchy. */
1787 HOWTO (R_PPC_GNU_VTINHERIT, /* type */
1788 0, /* rightshift */
1789 0, /* size (0 = byte, 1 = short, 2 = long) */
1790 0, /* bitsize */
1791 FALSE, /* pc_relative */
1792 0, /* bitpos */
1793 complain_overflow_dont, /* complain_on_overflow */
1794 NULL, /* special_function */
1795 "R_PPC_GNU_VTINHERIT", /* name */
1796 FALSE, /* partial_inplace */
1797 0, /* src_mask */
1798 0, /* dst_mask */
1799 FALSE), /* pcrel_offset */
1800
1801 /* GNU extension to record C++ vtable member usage. */
1802 HOWTO (R_PPC_GNU_VTENTRY, /* type */
1803 0, /* rightshift */
1804 0, /* size (0 = byte, 1 = short, 2 = long) */
1805 0, /* bitsize */
1806 FALSE, /* pc_relative */
1807 0, /* bitpos */
1808 complain_overflow_dont, /* complain_on_overflow */
1809 NULL, /* special_function */
1810 "R_PPC_GNU_VTENTRY", /* name */
1811 FALSE, /* partial_inplace */
1812 0, /* src_mask */
1813 0, /* dst_mask */
1814 FALSE), /* pcrel_offset */
1815
1816 /* Phony reloc to handle AIX style TOC entries. */
1817 HOWTO (R_PPC_TOC16, /* type */
1818 0, /* rightshift */
1819 1, /* size (0 = byte, 1 = short, 2 = long) */
1820 16, /* bitsize */
1821 FALSE, /* pc_relative */
1822 0, /* bitpos */
1823 complain_overflow_signed, /* complain_on_overflow */
1824 ppc_elf_unhandled_reloc, /* special_function */
1825 "R_PPC_TOC16", /* name */
1826 FALSE, /* partial_inplace */
1827 0, /* src_mask */
1828 0xffff, /* dst_mask */
1829 FALSE), /* pcrel_offset */
1830 };
1831 \f
1832 /* Initialize the ppc_elf_howto_table, so that linear accesses can be done. */
1833
1834 static void
1835 ppc_elf_howto_init (void)
1836 {
1837 unsigned int i, type;
1838
1839 for (i = 0;
1840 i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]);
1841 i++)
1842 {
1843 type = ppc_elf_howto_raw[i].type;
1844 if (type >= (sizeof (ppc_elf_howto_table)
1845 / sizeof (ppc_elf_howto_table[0])))
1846 abort ();
1847 ppc_elf_howto_table[type] = &ppc_elf_howto_raw[i];
1848 }
1849 }
1850
1851 static reloc_howto_type *
1852 ppc_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1853 bfd_reloc_code_real_type code)
1854 {
1855 enum elf_ppc_reloc_type r;
1856
1857 /* Initialize howto table if not already done. */
1858 if (!ppc_elf_howto_table[R_PPC_ADDR32])
1859 ppc_elf_howto_init ();
1860
1861 switch (code)
1862 {
1863 default:
1864 return NULL;
1865
1866 case BFD_RELOC_NONE: r = R_PPC_NONE; break;
1867 case BFD_RELOC_32: r = R_PPC_ADDR32; break;
1868 case BFD_RELOC_PPC_BA26: r = R_PPC_ADDR24; break;
1869 case BFD_RELOC_PPC64_ADDR16_DS:
1870 case BFD_RELOC_16: r = R_PPC_ADDR16; break;
1871 case BFD_RELOC_PPC64_ADDR16_LO_DS:
1872 case BFD_RELOC_LO16: r = R_PPC_ADDR16_LO; break;
1873 case BFD_RELOC_HI16: r = R_PPC_ADDR16_HI; break;
1874 case BFD_RELOC_HI16_S: r = R_PPC_ADDR16_HA; break;
1875 case BFD_RELOC_PPC_BA16: r = R_PPC_ADDR14; break;
1876 case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC_ADDR14_BRTAKEN; break;
1877 case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC_ADDR14_BRNTAKEN; break;
1878 case BFD_RELOC_PPC_B26: r = R_PPC_REL24; break;
1879 case BFD_RELOC_PPC_B16: r = R_PPC_REL14; break;
1880 case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC_REL14_BRTAKEN; break;
1881 case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC_REL14_BRNTAKEN; break;
1882 case BFD_RELOC_PPC64_GOT16_DS:
1883 case BFD_RELOC_16_GOTOFF: r = R_PPC_GOT16; break;
1884 case BFD_RELOC_PPC64_GOT16_LO_DS:
1885 case BFD_RELOC_LO16_GOTOFF: r = R_PPC_GOT16_LO; break;
1886 case BFD_RELOC_HI16_GOTOFF: r = R_PPC_GOT16_HI; break;
1887 case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC_GOT16_HA; break;
1888 case BFD_RELOC_24_PLT_PCREL: r = R_PPC_PLTREL24; break;
1889 case BFD_RELOC_PPC_COPY: r = R_PPC_COPY; break;
1890 case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC_GLOB_DAT; break;
1891 case BFD_RELOC_PPC_LOCAL24PC: r = R_PPC_LOCAL24PC; break;
1892 case BFD_RELOC_32_PCREL: r = R_PPC_REL32; break;
1893 case BFD_RELOC_32_PLTOFF: r = R_PPC_PLT32; break;
1894 case BFD_RELOC_32_PLT_PCREL: r = R_PPC_PLTREL32; break;
1895 case BFD_RELOC_PPC64_PLT16_LO_DS:
1896 case BFD_RELOC_LO16_PLTOFF: r = R_PPC_PLT16_LO; break;
1897 case BFD_RELOC_HI16_PLTOFF: r = R_PPC_PLT16_HI; break;
1898 case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC_PLT16_HA; break;
1899 case BFD_RELOC_GPREL16: r = R_PPC_SDAREL16; break;
1900 case BFD_RELOC_PPC64_SECTOFF_DS:
1901 case BFD_RELOC_16_BASEREL: r = R_PPC_SECTOFF; break;
1902 case BFD_RELOC_PPC64_SECTOFF_LO_DS:
1903 case BFD_RELOC_LO16_BASEREL: r = R_PPC_SECTOFF_LO; break;
1904 case BFD_RELOC_HI16_BASEREL: r = R_PPC_SECTOFF_HI; break;
1905 case BFD_RELOC_HI16_S_BASEREL: r = R_PPC_SECTOFF_HA; break;
1906 case BFD_RELOC_CTOR: r = R_PPC_ADDR32; break;
1907 case BFD_RELOC_PPC64_TOC16_DS:
1908 case BFD_RELOC_PPC_TOC16: r = R_PPC_TOC16; break;
1909 case BFD_RELOC_PPC_TLS: r = R_PPC_TLS; break;
1910 case BFD_RELOC_PPC_TLSGD: r = R_PPC_TLSGD; break;
1911 case BFD_RELOC_PPC_TLSLD: r = R_PPC_TLSLD; break;
1912 case BFD_RELOC_PPC_DTPMOD: r = R_PPC_DTPMOD32; break;
1913 case BFD_RELOC_PPC64_TPREL16_DS:
1914 case BFD_RELOC_PPC_TPREL16: r = R_PPC_TPREL16; break;
1915 case BFD_RELOC_PPC64_TPREL16_LO_DS:
1916 case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC_TPREL16_LO; break;
1917 case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC_TPREL16_HI; break;
1918 case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC_TPREL16_HA; break;
1919 case BFD_RELOC_PPC_TPREL: r = R_PPC_TPREL32; break;
1920 case BFD_RELOC_PPC64_DTPREL16_DS:
1921 case BFD_RELOC_PPC_DTPREL16: r = R_PPC_DTPREL16; break;
1922 case BFD_RELOC_PPC64_DTPREL16_LO_DS:
1923 case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC_DTPREL16_LO; break;
1924 case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC_DTPREL16_HI; break;
1925 case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC_DTPREL16_HA; break;
1926 case BFD_RELOC_PPC_DTPREL: r = R_PPC_DTPREL32; break;
1927 case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC_GOT_TLSGD16; break;
1928 case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC_GOT_TLSGD16_LO; break;
1929 case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC_GOT_TLSGD16_HI; break;
1930 case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC_GOT_TLSGD16_HA; break;
1931 case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC_GOT_TLSLD16; break;
1932 case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC_GOT_TLSLD16_LO; break;
1933 case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC_GOT_TLSLD16_HI; break;
1934 case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC_GOT_TLSLD16_HA; break;
1935 case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC_GOT_TPREL16; break;
1936 case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC_GOT_TPREL16_LO; break;
1937 case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC_GOT_TPREL16_HI; break;
1938 case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC_GOT_TPREL16_HA; break;
1939 case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC_GOT_DTPREL16; break;
1940 case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC_GOT_DTPREL16_LO; break;
1941 case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC_GOT_DTPREL16_HI; break;
1942 case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC_GOT_DTPREL16_HA; break;
1943 case BFD_RELOC_PPC_EMB_NADDR32: r = R_PPC_EMB_NADDR32; break;
1944 case BFD_RELOC_PPC_EMB_NADDR16: r = R_PPC_EMB_NADDR16; break;
1945 case BFD_RELOC_PPC_EMB_NADDR16_LO: r = R_PPC_EMB_NADDR16_LO; break;
1946 case BFD_RELOC_PPC_EMB_NADDR16_HI: r = R_PPC_EMB_NADDR16_HI; break;
1947 case BFD_RELOC_PPC_EMB_NADDR16_HA: r = R_PPC_EMB_NADDR16_HA; break;
1948 case BFD_RELOC_PPC_EMB_SDAI16: r = R_PPC_EMB_SDAI16; break;
1949 case BFD_RELOC_PPC_EMB_SDA2I16: r = R_PPC_EMB_SDA2I16; break;
1950 case BFD_RELOC_PPC_EMB_SDA2REL: r = R_PPC_EMB_SDA2REL; break;
1951 case BFD_RELOC_PPC_EMB_SDA21: r = R_PPC_EMB_SDA21; break;
1952 case BFD_RELOC_PPC_EMB_MRKREF: r = R_PPC_EMB_MRKREF; break;
1953 case BFD_RELOC_PPC_EMB_RELSEC16: r = R_PPC_EMB_RELSEC16; break;
1954 case BFD_RELOC_PPC_EMB_RELST_LO: r = R_PPC_EMB_RELST_LO; break;
1955 case BFD_RELOC_PPC_EMB_RELST_HI: r = R_PPC_EMB_RELST_HI; break;
1956 case BFD_RELOC_PPC_EMB_RELST_HA: r = R_PPC_EMB_RELST_HA; break;
1957 case BFD_RELOC_PPC_EMB_BIT_FLD: r = R_PPC_EMB_BIT_FLD; break;
1958 case BFD_RELOC_PPC_EMB_RELSDA: r = R_PPC_EMB_RELSDA; break;
1959 case BFD_RELOC_PPC_VLE_REL8: r = R_PPC_VLE_REL8; break;
1960 case BFD_RELOC_PPC_VLE_REL15: r = R_PPC_VLE_REL15; break;
1961 case BFD_RELOC_PPC_VLE_REL24: r = R_PPC_VLE_REL24; break;
1962 case BFD_RELOC_PPC_VLE_LO16A: r = R_PPC_VLE_LO16A; break;
1963 case BFD_RELOC_PPC_VLE_LO16D: r = R_PPC_VLE_LO16D; break;
1964 case BFD_RELOC_PPC_VLE_HI16A: r = R_PPC_VLE_HI16A; break;
1965 case BFD_RELOC_PPC_VLE_HI16D: r = R_PPC_VLE_HI16D; break;
1966 case BFD_RELOC_PPC_VLE_HA16A: r = R_PPC_VLE_HA16A; break;
1967 case BFD_RELOC_PPC_VLE_HA16D: r = R_PPC_VLE_HA16D; break;
1968 case BFD_RELOC_PPC_VLE_SDA21: r = R_PPC_VLE_SDA21; break;
1969 case BFD_RELOC_PPC_VLE_SDA21_LO: r = R_PPC_VLE_SDA21_LO; break;
1970 case BFD_RELOC_PPC_VLE_SDAREL_LO16A:
1971 r = R_PPC_VLE_SDAREL_LO16A;
1972 break;
1973 case BFD_RELOC_PPC_VLE_SDAREL_LO16D:
1974 r = R_PPC_VLE_SDAREL_LO16D;
1975 break;
1976 case BFD_RELOC_PPC_VLE_SDAREL_HI16A:
1977 r = R_PPC_VLE_SDAREL_HI16A;
1978 break;
1979 case BFD_RELOC_PPC_VLE_SDAREL_HI16D:
1980 r = R_PPC_VLE_SDAREL_HI16D;
1981 break;
1982 case BFD_RELOC_PPC_VLE_SDAREL_HA16A:
1983 r = R_PPC_VLE_SDAREL_HA16A;
1984 break;
1985 case BFD_RELOC_PPC_VLE_SDAREL_HA16D:
1986 r = R_PPC_VLE_SDAREL_HA16D;
1987 break;
1988 case BFD_RELOC_16_PCREL: r = R_PPC_REL16; break;
1989 case BFD_RELOC_LO16_PCREL: r = R_PPC_REL16_LO; break;
1990 case BFD_RELOC_HI16_PCREL: r = R_PPC_REL16_HI; break;
1991 case BFD_RELOC_HI16_S_PCREL: r = R_PPC_REL16_HA; break;
1992 case BFD_RELOC_PPC_16DX_HA: r = R_PPC_16DX_HA; break;
1993 case BFD_RELOC_PPC_REL16DX_HA: r = R_PPC_REL16DX_HA; break;
1994 case BFD_RELOC_VTABLE_INHERIT: r = R_PPC_GNU_VTINHERIT; break;
1995 case BFD_RELOC_VTABLE_ENTRY: r = R_PPC_GNU_VTENTRY; break;
1996 }
1997
1998 return ppc_elf_howto_table[r];
1999 };
2000
2001 static reloc_howto_type *
2002 ppc_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
2003 const char *r_name)
2004 {
2005 unsigned int i;
2006
2007 for (i = 0;
2008 i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]);
2009 i++)
2010 if (ppc_elf_howto_raw[i].name != NULL
2011 && strcasecmp (ppc_elf_howto_raw[i].name, r_name) == 0)
2012 return &ppc_elf_howto_raw[i];
2013
2014 return NULL;
2015 }
2016
2017 /* Set the howto pointer for a PowerPC ELF reloc. */
2018
2019 static void
2020 ppc_elf_info_to_howto (bfd *abfd,
2021 arelent *cache_ptr,
2022 Elf_Internal_Rela *dst)
2023 {
2024 unsigned int r_type;
2025
2026 /* Initialize howto table if not already done. */
2027 if (!ppc_elf_howto_table[R_PPC_ADDR32])
2028 ppc_elf_howto_init ();
2029
2030 r_type = ELF32_R_TYPE (dst->r_info);
2031 if (r_type >= R_PPC_max)
2032 {
2033 /* xgettext:c-format */
2034 _bfd_error_handler (_("%B: unrecognised PPC reloc number: %d"),
2035 abfd, r_type);
2036 bfd_set_error (bfd_error_bad_value);
2037 r_type = R_PPC_NONE;
2038 }
2039 cache_ptr->howto = ppc_elf_howto_table[r_type];
2040
2041 /* Just because the above assert didn't trigger doesn't mean that
2042 ELF32_R_TYPE (dst->r_info) is necessarily a valid relocation. */
2043 if (!cache_ptr->howto)
2044 {
2045 /* xgettext:c-format */
2046 _bfd_error_handler (_("%B: invalid relocation type %d"),
2047 abfd, r_type);
2048 bfd_set_error (bfd_error_bad_value);
2049
2050 cache_ptr->howto = ppc_elf_howto_table[R_PPC_NONE];
2051 }
2052 }
2053
2054 /* Handle the R_PPC_ADDR16_HA and R_PPC_REL16_HA relocs. */
2055
2056 static bfd_reloc_status_type
2057 ppc_elf_addr16_ha_reloc (bfd *abfd,
2058 arelent *reloc_entry,
2059 asymbol *symbol,
2060 void *data,
2061 asection *input_section,
2062 bfd *output_bfd,
2063 char **error_message ATTRIBUTE_UNUSED)
2064 {
2065 enum elf_ppc_reloc_type r_type;
2066 long insn;
2067 bfd_size_type octets;
2068 bfd_vma value;
2069
2070 if (output_bfd != NULL)
2071 {
2072 reloc_entry->address += input_section->output_offset;
2073 return bfd_reloc_ok;
2074 }
2075
2076 reloc_entry->addend += 0x8000;
2077 r_type = reloc_entry->howto->type;
2078 if (r_type != R_PPC_REL16DX_HA)
2079 return bfd_reloc_continue;
2080
2081 value = 0;
2082 if (!bfd_is_com_section (symbol->section))
2083 value = symbol->value;
2084 value += (reloc_entry->addend
2085 + symbol->section->output_offset
2086 + symbol->section->output_section->vma);
2087 value -= (reloc_entry->address
2088 + input_section->output_offset
2089 + input_section->output_section->vma);
2090 value >>= 16;
2091
2092 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
2093 insn = bfd_get_32 (abfd, (bfd_byte *) data + octets);
2094 insn &= ~0x1fffc1;
2095 insn |= (value & 0xffc1) | ((value & 0x3e) << 15);
2096 bfd_put_32 (abfd, insn, (bfd_byte *) data + octets);
2097 return bfd_reloc_ok;
2098 }
2099
2100 static bfd_reloc_status_type
2101 ppc_elf_unhandled_reloc (bfd *abfd,
2102 arelent *reloc_entry,
2103 asymbol *symbol,
2104 void *data,
2105 asection *input_section,
2106 bfd *output_bfd,
2107 char **error_message)
2108 {
2109 /* If this is a relocatable link (output_bfd test tells us), just
2110 call the generic function. Any adjustment will be done at final
2111 link time. */
2112 if (output_bfd != NULL)
2113 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2114 input_section, output_bfd, error_message);
2115
2116 if (error_message != NULL)
2117 {
2118 static char buf[60];
2119 sprintf (buf, _("generic linker can't handle %s"),
2120 reloc_entry->howto->name);
2121 *error_message = buf;
2122 }
2123 return bfd_reloc_dangerous;
2124 }
2125 \f
2126 /* Sections created by the linker. */
2127
2128 typedef struct elf_linker_section
2129 {
2130 /* Pointer to the bfd section. */
2131 asection *section;
2132 /* Section name. */
2133 const char *name;
2134 /* Associated bss section name. */
2135 const char *bss_name;
2136 /* Associated symbol name. */
2137 const char *sym_name;
2138 /* Associated symbol. */
2139 struct elf_link_hash_entry *sym;
2140 } elf_linker_section_t;
2141
2142 /* Linked list of allocated pointer entries. This hangs off of the
2143 symbol lists, and provides allows us to return different pointers,
2144 based on different addend's. */
2145
2146 typedef struct elf_linker_section_pointers
2147 {
2148 /* next allocated pointer for this symbol */
2149 struct elf_linker_section_pointers *next;
2150 /* offset of pointer from beginning of section */
2151 bfd_vma offset;
2152 /* addend used */
2153 bfd_vma addend;
2154 /* which linker section this is */
2155 elf_linker_section_t *lsect;
2156 } elf_linker_section_pointers_t;
2157
2158 struct ppc_elf_obj_tdata
2159 {
2160 struct elf_obj_tdata elf;
2161
2162 /* A mapping from local symbols to offsets into the various linker
2163 sections added. This is index by the symbol index. */
2164 elf_linker_section_pointers_t **linker_section_pointers;
2165
2166 /* Flags used to auto-detect plt type. */
2167 unsigned int makes_plt_call : 1;
2168 unsigned int has_rel16 : 1;
2169 };
2170
2171 #define ppc_elf_tdata(bfd) \
2172 ((struct ppc_elf_obj_tdata *) (bfd)->tdata.any)
2173
2174 #define elf_local_ptr_offsets(bfd) \
2175 (ppc_elf_tdata (bfd)->linker_section_pointers)
2176
2177 #define is_ppc_elf(bfd) \
2178 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
2179 && elf_object_id (bfd) == PPC32_ELF_DATA)
2180
2181 /* Override the generic function because we store some extras. */
2182
2183 static bfd_boolean
2184 ppc_elf_mkobject (bfd *abfd)
2185 {
2186 return bfd_elf_allocate_object (abfd, sizeof (struct ppc_elf_obj_tdata),
2187 PPC32_ELF_DATA);
2188 }
2189
2190 /* When defaulting arch/mach, decode apuinfo to find a better match. */
2191
2192 bfd_boolean
2193 _bfd_elf_ppc_set_arch (bfd *abfd)
2194 {
2195 unsigned long mach = 0;
2196 asection *s;
2197 unsigned char *contents;
2198
2199 if (abfd->arch_info->bits_per_word == 32
2200 && bfd_big_endian (abfd))
2201 {
2202
2203 for (s = abfd->sections; s != NULL; s = s->next)
2204 if ((elf_section_data (s)->this_hdr.sh_flags & SHF_PPC_VLE) != 0)
2205 break;
2206 if (s != NULL)
2207 mach = bfd_mach_ppc_vle;
2208 }
2209
2210 if (mach == 0)
2211 {
2212 s = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2213 if (s != NULL && bfd_malloc_and_get_section (abfd, s, &contents))
2214 {
2215 unsigned int apuinfo_size = bfd_get_32 (abfd, contents + 4);
2216 unsigned int i;
2217
2218 for (i = 20; i < apuinfo_size + 20 && i + 4 <= s->size; i += 4)
2219 {
2220 unsigned int val = bfd_get_32 (abfd, contents + i);
2221 switch (val >> 16)
2222 {
2223 case PPC_APUINFO_PMR:
2224 case PPC_APUINFO_RFMCI:
2225 if (mach == 0)
2226 mach = bfd_mach_ppc_titan;
2227 break;
2228
2229 case PPC_APUINFO_ISEL:
2230 case PPC_APUINFO_CACHELCK:
2231 if (mach == bfd_mach_ppc_titan)
2232 mach = bfd_mach_ppc_e500mc;
2233 break;
2234
2235 case PPC_APUINFO_SPE:
2236 case PPC_APUINFO_EFS:
2237 case PPC_APUINFO_BRLOCK:
2238 if (mach != bfd_mach_ppc_vle)
2239 mach = bfd_mach_ppc_e500;
2240 break;
2241
2242 case PPC_APUINFO_VLE:
2243 mach = bfd_mach_ppc_vle;
2244 break;
2245
2246 default:
2247 mach = -1ul;
2248 }
2249 }
2250 free (contents);
2251 }
2252 }
2253
2254 if (mach != 0 && mach != -1ul)
2255 {
2256 const bfd_arch_info_type *arch;
2257
2258 for (arch = abfd->arch_info->next; arch; arch = arch->next)
2259 if (arch->mach == mach)
2260 {
2261 abfd->arch_info = arch;
2262 break;
2263 }
2264 }
2265 return TRUE;
2266 }
2267
2268 /* Fix bad default arch selected for a 32 bit input bfd when the
2269 default is 64 bit. Also select arch based on apuinfo. */
2270
2271 static bfd_boolean
2272 ppc_elf_object_p (bfd *abfd)
2273 {
2274 if (!abfd->arch_info->the_default)
2275 return TRUE;
2276
2277 if (abfd->arch_info->bits_per_word == 64)
2278 {
2279 Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd);
2280
2281 if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS32)
2282 {
2283 /* Relies on arch after 64 bit default being 32 bit default. */
2284 abfd->arch_info = abfd->arch_info->next;
2285 BFD_ASSERT (abfd->arch_info->bits_per_word == 32);
2286 }
2287 }
2288 return _bfd_elf_ppc_set_arch (abfd);
2289 }
2290
2291 /* Function to set whether a module needs the -mrelocatable bit set. */
2292
2293 static bfd_boolean
2294 ppc_elf_set_private_flags (bfd *abfd, flagword flags)
2295 {
2296 BFD_ASSERT (!elf_flags_init (abfd)
2297 || elf_elfheader (abfd)->e_flags == flags);
2298
2299 elf_elfheader (abfd)->e_flags = flags;
2300 elf_flags_init (abfd) = TRUE;
2301 return TRUE;
2302 }
2303
2304 /* Support for core dump NOTE sections. */
2305
2306 static bfd_boolean
2307 ppc_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
2308 {
2309 int offset;
2310 unsigned int size;
2311
2312 switch (note->descsz)
2313 {
2314 default:
2315 return FALSE;
2316
2317 case 268: /* Linux/PPC. */
2318 /* pr_cursig */
2319 elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12);
2320
2321 /* pr_pid */
2322 elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 24);
2323
2324 /* pr_reg */
2325 offset = 72;
2326 size = 192;
2327
2328 break;
2329 }
2330
2331 /* Make a ".reg/999" section. */
2332 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
2333 size, note->descpos + offset);
2334 }
2335
2336 static bfd_boolean
2337 ppc_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
2338 {
2339 switch (note->descsz)
2340 {
2341 default:
2342 return FALSE;
2343
2344 case 128: /* Linux/PPC elf_prpsinfo. */
2345 elf_tdata (abfd)->core->pid
2346 = bfd_get_32 (abfd, note->descdata + 16);
2347 elf_tdata (abfd)->core->program
2348 = _bfd_elfcore_strndup (abfd, note->descdata + 32, 16);
2349 elf_tdata (abfd)->core->command
2350 = _bfd_elfcore_strndup (abfd, note->descdata + 48, 80);
2351 }
2352
2353 /* Note that for some reason, a spurious space is tacked
2354 onto the end of the args in some (at least one anyway)
2355 implementations, so strip it off if it exists. */
2356
2357 {
2358 char *command = elf_tdata (abfd)->core->command;
2359 int n = strlen (command);
2360
2361 if (0 < n && command[n - 1] == ' ')
2362 command[n - 1] = '\0';
2363 }
2364
2365 return TRUE;
2366 }
2367
2368 static char *
2369 ppc_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type, ...)
2370 {
2371 switch (note_type)
2372 {
2373 default:
2374 return NULL;
2375
2376 case NT_PRPSINFO:
2377 {
2378 char data[128];
2379 va_list ap;
2380
2381 va_start (ap, note_type);
2382 memset (data, 0, sizeof (data));
2383 strncpy (data + 32, va_arg (ap, const char *), 16);
2384 strncpy (data + 48, va_arg (ap, const char *), 80);
2385 va_end (ap);
2386 return elfcore_write_note (abfd, buf, bufsiz,
2387 "CORE", note_type, data, sizeof (data));
2388 }
2389
2390 case NT_PRSTATUS:
2391 {
2392 char data[268];
2393 va_list ap;
2394 long pid;
2395 int cursig;
2396 const void *greg;
2397
2398 va_start (ap, note_type);
2399 memset (data, 0, 72);
2400 pid = va_arg (ap, long);
2401 bfd_put_32 (abfd, pid, data + 24);
2402 cursig = va_arg (ap, int);
2403 bfd_put_16 (abfd, cursig, data + 12);
2404 greg = va_arg (ap, const void *);
2405 memcpy (data + 72, greg, 192);
2406 memset (data + 264, 0, 4);
2407 va_end (ap);
2408 return elfcore_write_note (abfd, buf, bufsiz,
2409 "CORE", note_type, data, sizeof (data));
2410 }
2411 }
2412 }
2413
2414 static flagword
2415 ppc_elf_lookup_section_flags (char *flag_name)
2416 {
2417
2418 if (!strcmp (flag_name, "SHF_PPC_VLE"))
2419 return SHF_PPC_VLE;
2420
2421 return 0;
2422 }
2423
2424 /* Return address for Ith PLT stub in section PLT, for relocation REL
2425 or (bfd_vma) -1 if it should not be included. */
2426
2427 static bfd_vma
2428 ppc_elf_plt_sym_val (bfd_vma i ATTRIBUTE_UNUSED,
2429 const asection *plt ATTRIBUTE_UNUSED,
2430 const arelent *rel)
2431 {
2432 return rel->address;
2433 }
2434
2435 /* Handle a PowerPC specific section when reading an object file. This
2436 is called when bfd_section_from_shdr finds a section with an unknown
2437 type. */
2438
2439 static bfd_boolean
2440 ppc_elf_section_from_shdr (bfd *abfd,
2441 Elf_Internal_Shdr *hdr,
2442 const char *name,
2443 int shindex)
2444 {
2445 asection *newsect;
2446 flagword flags;
2447
2448 if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
2449 return FALSE;
2450
2451 newsect = hdr->bfd_section;
2452 flags = bfd_get_section_flags (abfd, newsect);
2453 if (hdr->sh_flags & SHF_EXCLUDE)
2454 flags |= SEC_EXCLUDE;
2455
2456 if (hdr->sh_type == SHT_ORDERED)
2457 flags |= SEC_SORT_ENTRIES;
2458
2459 bfd_set_section_flags (abfd, newsect, flags);
2460 return TRUE;
2461 }
2462
2463 /* Set up any other section flags and such that may be necessary. */
2464
2465 static bfd_boolean
2466 ppc_elf_fake_sections (bfd *abfd ATTRIBUTE_UNUSED,
2467 Elf_Internal_Shdr *shdr,
2468 asection *asect)
2469 {
2470 if ((asect->flags & SEC_SORT_ENTRIES) != 0)
2471 shdr->sh_type = SHT_ORDERED;
2472
2473 return TRUE;
2474 }
2475
2476 /* If we have .sbss2 or .PPC.EMB.sbss0 output sections, we
2477 need to bump up the number of section headers. */
2478
2479 static int
2480 ppc_elf_additional_program_headers (bfd *abfd,
2481 struct bfd_link_info *info ATTRIBUTE_UNUSED)
2482 {
2483 asection *s;
2484 int ret = 0;
2485
2486 s = bfd_get_section_by_name (abfd, ".sbss2");
2487 if (s != NULL && (s->flags & SEC_ALLOC) != 0)
2488 ++ret;
2489
2490 s = bfd_get_section_by_name (abfd, ".PPC.EMB.sbss0");
2491 if (s != NULL && (s->flags & SEC_ALLOC) != 0)
2492 ++ret;
2493
2494 return ret;
2495 }
2496
2497 /* Modify the segment map for VLE executables. */
2498
2499 bfd_boolean
2500 ppc_elf_modify_segment_map (bfd *abfd,
2501 struct bfd_link_info *info ATTRIBUTE_UNUSED)
2502 {
2503 struct elf_segment_map *m;
2504
2505 /* At this point in the link, output sections have already been sorted by
2506 LMA and assigned to segments. All that is left to do is to ensure
2507 there is no mixing of VLE & non-VLE sections in a text segment.
2508 If we find that case, we split the segment.
2509 We maintain the original output section order. */
2510
2511 for (m = elf_seg_map (abfd); m != NULL; m = m->next)
2512 {
2513 struct elf_segment_map *n;
2514 bfd_size_type amt;
2515 unsigned int j, k;
2516 unsigned int p_flags;
2517
2518 if (m->p_type != PT_LOAD || m->count == 0)
2519 continue;
2520
2521 for (p_flags = PF_R, j = 0; j != m->count; ++j)
2522 {
2523 if ((m->sections[j]->flags & SEC_READONLY) == 0)
2524 p_flags |= PF_W;
2525 if ((m->sections[j]->flags & SEC_CODE) != 0)
2526 {
2527 p_flags |= PF_X;
2528 if ((elf_section_flags (m->sections[j]) & SHF_PPC_VLE) != 0)
2529 p_flags |= PF_PPC_VLE;
2530 break;
2531 }
2532 }
2533 if (j != m->count)
2534 while (++j != m->count)
2535 {
2536 unsigned int p_flags1 = PF_R;
2537
2538 if ((m->sections[j]->flags & SEC_READONLY) == 0)
2539 p_flags1 |= PF_W;
2540 if ((m->sections[j]->flags & SEC_CODE) != 0)
2541 {
2542 p_flags1 |= PF_X;
2543 if ((elf_section_flags (m->sections[j]) & SHF_PPC_VLE) != 0)
2544 p_flags1 |= PF_PPC_VLE;
2545 if (((p_flags1 ^ p_flags) & PF_PPC_VLE) != 0)
2546 break;
2547 }
2548 p_flags |= p_flags1;
2549 }
2550 /* If we're splitting a segment which originally contained rw
2551 sections then those sections might now only be in one of the
2552 two parts. So always set p_flags if splitting, even if we
2553 are being called for objcopy with p_flags_valid set. */
2554 if (j != m->count || !m->p_flags_valid)
2555 {
2556 m->p_flags_valid = 1;
2557 m->p_flags = p_flags;
2558 }
2559 if (j == m->count)
2560 continue;
2561
2562 /* Sections 0..j-1 stay in this (current) segment,
2563 the remainder are put in a new segment.
2564 The scan resumes with the new segment. */
2565
2566 amt = sizeof (struct elf_segment_map);
2567 amt += (m->count - j - 1) * sizeof (asection *);
2568 n = (struct elf_segment_map *) bfd_zalloc (abfd, amt);
2569 if (n == NULL)
2570 return FALSE;
2571
2572 n->p_type = PT_LOAD;
2573 n->count = m->count - j;
2574 for (k = 0; k < n->count; ++k)
2575 n->sections[k] = m->sections[j + k];
2576 m->count = j;
2577 m->p_size_valid = 0;
2578 n->next = m->next;
2579 m->next = n;
2580 }
2581
2582 return TRUE;
2583 }
2584
2585 /* Add extra PPC sections -- Note, for now, make .sbss2 and
2586 .PPC.EMB.sbss0 a normal section, and not a bss section so
2587 that the linker doesn't crater when trying to make more than
2588 2 sections. */
2589
2590 static const struct bfd_elf_special_section ppc_elf_special_sections[] =
2591 {
2592 { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, SHF_ALLOC + SHF_EXECINSTR },
2593 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2594 { STRING_COMMA_LEN (".sbss2"), -2, SHT_PROGBITS, SHF_ALLOC },
2595 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2596 { STRING_COMMA_LEN (".sdata2"), -2, SHT_PROGBITS, SHF_ALLOC },
2597 { STRING_COMMA_LEN (".tags"), 0, SHT_ORDERED, SHF_ALLOC },
2598 { STRING_COMMA_LEN (APUINFO_SECTION_NAME), 0, SHT_NOTE, 0 },
2599 { STRING_COMMA_LEN (".PPC.EMB.sbss0"), 0, SHT_PROGBITS, SHF_ALLOC },
2600 { STRING_COMMA_LEN (".PPC.EMB.sdata0"), 0, SHT_PROGBITS, SHF_ALLOC },
2601 { NULL, 0, 0, 0, 0 }
2602 };
2603
2604 /* This is what we want for new plt/got. */
2605 static struct bfd_elf_special_section ppc_alt_plt =
2606 { STRING_COMMA_LEN (".plt"), 0, SHT_PROGBITS, SHF_ALLOC };
2607
2608 static const struct bfd_elf_special_section *
2609 ppc_elf_get_sec_type_attr (bfd *abfd, asection *sec)
2610 {
2611 const struct bfd_elf_special_section *ssect;
2612
2613 /* See if this is one of the special sections. */
2614 if (sec->name == NULL)
2615 return NULL;
2616
2617 ssect = _bfd_elf_get_special_section (sec->name, ppc_elf_special_sections,
2618 sec->use_rela_p);
2619 if (ssect != NULL)
2620 {
2621 if (ssect == ppc_elf_special_sections && (sec->flags & SEC_LOAD) != 0)
2622 ssect = &ppc_alt_plt;
2623 return ssect;
2624 }
2625
2626 return _bfd_elf_get_sec_type_attr (abfd, sec);
2627 }
2628 \f
2629 /* Very simple linked list structure for recording apuinfo values. */
2630 typedef struct apuinfo_list
2631 {
2632 struct apuinfo_list *next;
2633 unsigned long value;
2634 }
2635 apuinfo_list;
2636
2637 static apuinfo_list *head;
2638 static bfd_boolean apuinfo_set;
2639
2640 static void
2641 apuinfo_list_init (void)
2642 {
2643 head = NULL;
2644 apuinfo_set = FALSE;
2645 }
2646
2647 static void
2648 apuinfo_list_add (unsigned long value)
2649 {
2650 apuinfo_list *entry = head;
2651
2652 while (entry != NULL)
2653 {
2654 if (entry->value == value)
2655 return;
2656 entry = entry->next;
2657 }
2658
2659 entry = bfd_malloc (sizeof (* entry));
2660 if (entry == NULL)
2661 return;
2662
2663 entry->value = value;
2664 entry->next = head;
2665 head = entry;
2666 }
2667
2668 static unsigned
2669 apuinfo_list_length (void)
2670 {
2671 apuinfo_list *entry;
2672 unsigned long count;
2673
2674 for (entry = head, count = 0;
2675 entry;
2676 entry = entry->next)
2677 ++ count;
2678
2679 return count;
2680 }
2681
2682 static inline unsigned long
2683 apuinfo_list_element (unsigned long number)
2684 {
2685 apuinfo_list * entry;
2686
2687 for (entry = head;
2688 entry && number --;
2689 entry = entry->next)
2690 ;
2691
2692 return entry ? entry->value : 0;
2693 }
2694
2695 static void
2696 apuinfo_list_finish (void)
2697 {
2698 apuinfo_list *entry;
2699
2700 for (entry = head; entry;)
2701 {
2702 apuinfo_list *next = entry->next;
2703 free (entry);
2704 entry = next;
2705 }
2706
2707 head = NULL;
2708 }
2709
2710 /* Scan the input BFDs and create a linked list of
2711 the APUinfo values that will need to be emitted. */
2712
2713 static void
2714 ppc_elf_begin_write_processing (bfd *abfd, struct bfd_link_info *link_info)
2715 {
2716 bfd *ibfd;
2717 asection *asec;
2718 char *buffer = NULL;
2719 bfd_size_type largest_input_size = 0;
2720 unsigned i;
2721 unsigned long length;
2722 const char *error_message = NULL;
2723
2724 if (link_info == NULL)
2725 return;
2726
2727 apuinfo_list_init ();
2728
2729 /* Read in the input sections contents. */
2730 for (ibfd = link_info->input_bfds; ibfd; ibfd = ibfd->link.next)
2731 {
2732 unsigned long datum;
2733
2734 asec = bfd_get_section_by_name (ibfd, APUINFO_SECTION_NAME);
2735 if (asec == NULL)
2736 continue;
2737
2738 /* xgettext:c-format */
2739 error_message = _("corrupt %s section in %B");
2740 length = asec->size;
2741 if (length < 20)
2742 goto fail;
2743
2744 apuinfo_set = TRUE;
2745 if (largest_input_size < asec->size)
2746 {
2747 if (buffer)
2748 free (buffer);
2749 largest_input_size = asec->size;
2750 buffer = bfd_malloc (largest_input_size);
2751 if (!buffer)
2752 return;
2753 }
2754
2755 if (bfd_seek (ibfd, asec->filepos, SEEK_SET) != 0
2756 || (bfd_bread (buffer, length, ibfd) != length))
2757 {
2758 /* xgettext:c-format */
2759 error_message = _("unable to read in %s section from %B");
2760 goto fail;
2761 }
2762
2763 /* Verify the contents of the header. Note - we have to
2764 extract the values this way in order to allow for a
2765 host whose endian-ness is different from the target. */
2766 datum = bfd_get_32 (ibfd, buffer);
2767 if (datum != sizeof APUINFO_LABEL)
2768 goto fail;
2769
2770 datum = bfd_get_32 (ibfd, buffer + 8);
2771 if (datum != 0x2)
2772 goto fail;
2773
2774 if (strcmp (buffer + 12, APUINFO_LABEL) != 0)
2775 goto fail;
2776
2777 /* Get the number of bytes used for apuinfo entries. */
2778 datum = bfd_get_32 (ibfd, buffer + 4);
2779 if (datum + 20 != length)
2780 goto fail;
2781
2782 /* Scan the apuinfo section, building a list of apuinfo numbers. */
2783 for (i = 0; i < datum; i += 4)
2784 apuinfo_list_add (bfd_get_32 (ibfd, buffer + 20 + i));
2785 }
2786
2787 error_message = NULL;
2788
2789 if (apuinfo_set)
2790 {
2791 /* Compute the size of the output section. */
2792 unsigned num_entries = apuinfo_list_length ();
2793
2794 /* Set the output section size, if it exists. */
2795 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2796
2797 if (asec && ! bfd_set_section_size (abfd, asec, 20 + num_entries * 4))
2798 {
2799 ibfd = abfd;
2800 /* xgettext:c-format */
2801 error_message = _("warning: unable to set size of %s section in %B");
2802 }
2803 }
2804
2805 fail:
2806 if (buffer)
2807 free (buffer);
2808
2809 if (error_message)
2810 _bfd_error_handler (error_message, APUINFO_SECTION_NAME, ibfd);
2811 }
2812
2813 /* Prevent the output section from accumulating the input sections'
2814 contents. We have already stored this in our linked list structure. */
2815
2816 static bfd_boolean
2817 ppc_elf_write_section (bfd *abfd ATTRIBUTE_UNUSED,
2818 struct bfd_link_info *link_info ATTRIBUTE_UNUSED,
2819 asection *asec,
2820 bfd_byte *contents ATTRIBUTE_UNUSED)
2821 {
2822 return apuinfo_set && strcmp (asec->name, APUINFO_SECTION_NAME) == 0;
2823 }
2824
2825 /* Finally we can generate the output section. */
2826
2827 static void
2828 ppc_elf_final_write_processing (bfd *abfd, bfd_boolean linker ATTRIBUTE_UNUSED)
2829 {
2830 bfd_byte *buffer;
2831 asection *asec;
2832 unsigned i;
2833 unsigned num_entries;
2834 bfd_size_type length;
2835
2836 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2837 if (asec == NULL)
2838 return;
2839
2840 if (!apuinfo_set)
2841 return;
2842
2843 length = asec->size;
2844 if (length < 20)
2845 return;
2846
2847 buffer = bfd_malloc (length);
2848 if (buffer == NULL)
2849 {
2850 _bfd_error_handler
2851 (_("failed to allocate space for new APUinfo section."));
2852 return;
2853 }
2854
2855 /* Create the apuinfo header. */
2856 num_entries = apuinfo_list_length ();
2857 bfd_put_32 (abfd, sizeof APUINFO_LABEL, buffer);
2858 bfd_put_32 (abfd, num_entries * 4, buffer + 4);
2859 bfd_put_32 (abfd, 0x2, buffer + 8);
2860 strcpy ((char *) buffer + 12, APUINFO_LABEL);
2861
2862 length = 20;
2863 for (i = 0; i < num_entries; i++)
2864 {
2865 bfd_put_32 (abfd, apuinfo_list_element (i), buffer + length);
2866 length += 4;
2867 }
2868
2869 if (length != asec->size)
2870 _bfd_error_handler (_("failed to compute new APUinfo section."));
2871
2872 if (! bfd_set_section_contents (abfd, asec, buffer, (file_ptr) 0, length))
2873 _bfd_error_handler (_("failed to install new APUinfo section."));
2874
2875 free (buffer);
2876
2877 apuinfo_list_finish ();
2878 }
2879 \f
2880 static bfd_boolean
2881 is_nonpic_glink_stub (bfd *abfd, asection *glink, bfd_vma off)
2882 {
2883 bfd_byte buf[3 * 4];
2884
2885 if (!bfd_get_section_contents (abfd, glink, buf, off, sizeof buf))
2886 return FALSE;
2887
2888 return ((bfd_get_32 (abfd, buf + 0) & 0xffff0000) == LIS_11
2889 && (bfd_get_32 (abfd, buf + 4) & 0xffff0000) == LWZ_11_11
2890 && bfd_get_32 (abfd, buf + 8) == MTCTR_11);
2891 }
2892
2893 static bfd_boolean
2894 section_covers_vma (bfd *abfd ATTRIBUTE_UNUSED, asection *section, void *ptr)
2895 {
2896 bfd_vma vma = *(bfd_vma *) ptr;
2897 return ((section->flags & SEC_ALLOC) != 0
2898 && section->vma <= vma
2899 && vma < section->vma + section->size);
2900 }
2901
2902 static long
2903 ppc_elf_get_synthetic_symtab (bfd *abfd, long symcount, asymbol **syms,
2904 long dynsymcount, asymbol **dynsyms,
2905 asymbol **ret)
2906 {
2907 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
2908 asection *plt, *relplt, *dynamic, *glink;
2909 bfd_vma glink_vma = 0;
2910 bfd_vma resolv_vma = 0;
2911 bfd_vma stub_off;
2912 asymbol *s;
2913 arelent *p;
2914 long count, i, stub_delta;
2915 size_t size;
2916 char *names;
2917 bfd_byte buf[4];
2918
2919 *ret = NULL;
2920
2921 if ((abfd->flags & (DYNAMIC | EXEC_P)) == 0)
2922 return 0;
2923
2924 if (dynsymcount <= 0)
2925 return 0;
2926
2927 relplt = bfd_get_section_by_name (abfd, ".rela.plt");
2928 if (relplt == NULL)
2929 return 0;
2930
2931 plt = bfd_get_section_by_name (abfd, ".plt");
2932 if (plt == NULL)
2933 return 0;
2934
2935 /* Call common code to handle old-style executable PLTs. */
2936 if (elf_section_flags (plt) & SHF_EXECINSTR)
2937 return _bfd_elf_get_synthetic_symtab (abfd, symcount, syms,
2938 dynsymcount, dynsyms, ret);
2939
2940 /* If this object was prelinked, the prelinker stored the address
2941 of .glink at got[1]. If it wasn't prelinked, got[1] will be zero. */
2942 dynamic = bfd_get_section_by_name (abfd, ".dynamic");
2943 if (dynamic != NULL)
2944 {
2945 bfd_byte *dynbuf, *extdyn, *extdynend;
2946 size_t extdynsize;
2947 void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *);
2948
2949 if (!bfd_malloc_and_get_section (abfd, dynamic, &dynbuf))
2950 return -1;
2951
2952 extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn;
2953 swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in;
2954
2955 extdyn = dynbuf;
2956 extdynend = extdyn + dynamic->size;
2957 for (; extdyn < extdynend; extdyn += extdynsize)
2958 {
2959 Elf_Internal_Dyn dyn;
2960 (*swap_dyn_in) (abfd, extdyn, &dyn);
2961
2962 if (dyn.d_tag == DT_NULL)
2963 break;
2964
2965 if (dyn.d_tag == DT_PPC_GOT)
2966 {
2967 unsigned int g_o_t = dyn.d_un.d_val;
2968 asection *got = bfd_get_section_by_name (abfd, ".got");
2969 if (got != NULL
2970 && bfd_get_section_contents (abfd, got, buf,
2971 g_o_t - got->vma + 4, 4))
2972 glink_vma = bfd_get_32 (abfd, buf);
2973 break;
2974 }
2975 }
2976 free (dynbuf);
2977 }
2978
2979 /* Otherwise we read the first plt entry. */
2980 if (glink_vma == 0)
2981 {
2982 if (bfd_get_section_contents (abfd, plt, buf, 0, 4))
2983 glink_vma = bfd_get_32 (abfd, buf);
2984 }
2985
2986 if (glink_vma == 0)
2987 return 0;
2988
2989 /* The .glink section usually does not survive the final
2990 link; search for the section (usually .text) where the
2991 glink stubs now reside. */
2992 glink = bfd_sections_find_if (abfd, section_covers_vma, &glink_vma);
2993 if (glink == NULL)
2994 return 0;
2995
2996 /* Determine glink PLT resolver by reading the relative branch
2997 from the first glink stub. */
2998 if (bfd_get_section_contents (abfd, glink, buf,
2999 glink_vma - glink->vma, 4))
3000 {
3001 unsigned int insn = bfd_get_32 (abfd, buf);
3002
3003 /* The first glink stub may either branch to the resolver ... */
3004 insn ^= B;
3005 if ((insn & ~0x3fffffc) == 0)
3006 resolv_vma = glink_vma + (insn ^ 0x2000000) - 0x2000000;
3007
3008 /* ... or fall through a bunch of NOPs. */
3009 else if ((insn ^ B ^ NOP) == 0)
3010 for (i = 4;
3011 bfd_get_section_contents (abfd, glink, buf,
3012 glink_vma - glink->vma + i, 4);
3013 i += 4)
3014 if (bfd_get_32 (abfd, buf) != NOP)
3015 {
3016 resolv_vma = glink_vma + i;
3017 break;
3018 }
3019 }
3020
3021 count = relplt->size / sizeof (Elf32_External_Rela);
3022 /* If the stubs are those for -shared/-pie then we might have
3023 multiple stubs for each plt entry. If that is the case then
3024 there is no way to associate stubs with their plt entries short
3025 of figuring out the GOT pointer value used in the stub.
3026 The offsets tested here need to cover all possible values of
3027 GLINK_ENTRY_SIZE for other than __tls_get_addr_opt. */
3028 stub_off = glink_vma - glink->vma;
3029 for (stub_delta = 16; stub_delta <= 32; stub_delta += 8)
3030 if (is_nonpic_glink_stub (abfd, glink, stub_off - stub_delta))
3031 break;
3032 if (stub_delta > 32)
3033 return 0;
3034
3035 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
3036 if (! (*slurp_relocs) (abfd, relplt, dynsyms, TRUE))
3037 return -1;
3038
3039 size = count * sizeof (asymbol);
3040 p = relplt->relocation;
3041 for (i = 0; i < count; i++, p++)
3042 {
3043 size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt");
3044 if (p->addend != 0)
3045 size += sizeof ("+0x") - 1 + 8;
3046 }
3047
3048 size += sizeof (asymbol) + sizeof ("__glink");
3049
3050 if (resolv_vma)
3051 size += sizeof (asymbol) + sizeof ("__glink_PLTresolve");
3052
3053 s = *ret = bfd_malloc (size);
3054 if (s == NULL)
3055 return -1;
3056
3057 stub_off = glink_vma - glink->vma;
3058 names = (char *) (s + count + 1 + (resolv_vma != 0));
3059 p = relplt->relocation + count - 1;
3060 for (i = 0; i < count; i++)
3061 {
3062 size_t len;
3063
3064 stub_off -= stub_delta;
3065 if (strcmp ((*p->sym_ptr_ptr)->name, "__tls_get_addr_opt") == 0)
3066 stub_off -= 32;
3067 *s = **p->sym_ptr_ptr;
3068 /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since
3069 we are defining a symbol, ensure one of them is set. */
3070 if ((s->flags & BSF_LOCAL) == 0)
3071 s->flags |= BSF_GLOBAL;
3072 s->flags |= BSF_SYNTHETIC;
3073 s->section = glink;
3074 s->value = stub_off;
3075 s->name = names;
3076 s->udata.p = NULL;
3077 len = strlen ((*p->sym_ptr_ptr)->name);
3078 memcpy (names, (*p->sym_ptr_ptr)->name, len);
3079 names += len;
3080 if (p->addend != 0)
3081 {
3082 memcpy (names, "+0x", sizeof ("+0x") - 1);
3083 names += sizeof ("+0x") - 1;
3084 bfd_sprintf_vma (abfd, names, p->addend);
3085 names += strlen (names);
3086 }
3087 memcpy (names, "@plt", sizeof ("@plt"));
3088 names += sizeof ("@plt");
3089 ++s;
3090 --p;
3091 }
3092
3093 /* Add a symbol at the start of the glink branch table. */
3094 memset (s, 0, sizeof *s);
3095 s->the_bfd = abfd;
3096 s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
3097 s->section = glink;
3098 s->value = glink_vma - glink->vma;
3099 s->name = names;
3100 memcpy (names, "__glink", sizeof ("__glink"));
3101 names += sizeof ("__glink");
3102 s++;
3103 count++;
3104
3105 if (resolv_vma)
3106 {
3107 /* Add a symbol for the glink PLT resolver. */
3108 memset (s, 0, sizeof *s);
3109 s->the_bfd = abfd;
3110 s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
3111 s->section = glink;
3112 s->value = resolv_vma - glink->vma;
3113 s->name = names;
3114 memcpy (names, "__glink_PLTresolve", sizeof ("__glink_PLTresolve"));
3115 names += sizeof ("__glink_PLTresolve");
3116 s++;
3117 count++;
3118 }
3119
3120 return count;
3121 }
3122 \f
3123 /* The following functions are specific to the ELF linker, while
3124 functions above are used generally. They appear in this file more
3125 or less in the order in which they are called. eg.
3126 ppc_elf_check_relocs is called early in the link process,
3127 ppc_elf_finish_dynamic_sections is one of the last functions
3128 called. */
3129
3130 /* Track PLT entries needed for a given symbol. We might need more
3131 than one glink entry per symbol when generating a pic binary. */
3132 struct plt_entry
3133 {
3134 struct plt_entry *next;
3135
3136 /* -fPIC uses multiple GOT sections, one per file, called ".got2".
3137 This field stores the offset into .got2 used to initialise the
3138 GOT pointer reg. It will always be at least 32768. (Current
3139 gcc always uses an offset of 32768, but ld -r will pack .got2
3140 sections together resulting in larger offsets). */
3141 bfd_vma addend;
3142
3143 /* The .got2 section. */
3144 asection *sec;
3145
3146 /* PLT refcount or offset. */
3147 union
3148 {
3149 bfd_signed_vma refcount;
3150 bfd_vma offset;
3151 } plt;
3152
3153 /* .glink stub offset. */
3154 bfd_vma glink_offset;
3155 };
3156
3157 /* Of those relocs that might be copied as dynamic relocs, this
3158 function selects those that must be copied when linking a shared
3159 library or PIE, even when the symbol is local. */
3160
3161 static int
3162 must_be_dyn_reloc (struct bfd_link_info *info,
3163 enum elf_ppc_reloc_type r_type)
3164 {
3165 switch (r_type)
3166 {
3167 default:
3168 /* Only relative relocs can be resolved when the object load
3169 address isn't fixed. DTPREL32 is excluded because the
3170 dynamic linker needs to differentiate global dynamic from
3171 local dynamic __tls_index pairs when PPC_OPT_TLS is set. */
3172 return 1;
3173
3174 case R_PPC_REL24:
3175 case R_PPC_REL14:
3176 case R_PPC_REL14_BRTAKEN:
3177 case R_PPC_REL14_BRNTAKEN:
3178 case R_PPC_REL32:
3179 return 0;
3180
3181 case R_PPC_TPREL32:
3182 case R_PPC_TPREL16:
3183 case R_PPC_TPREL16_LO:
3184 case R_PPC_TPREL16_HI:
3185 case R_PPC_TPREL16_HA:
3186 /* These relocations are relative but in a shared library the
3187 linker doesn't know the thread pointer base. */
3188 return bfd_link_dll (info);
3189 }
3190 }
3191
3192 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
3193 copying dynamic variables from a shared lib into an app's dynbss
3194 section, and instead use a dynamic relocation to point into the
3195 shared lib. */
3196 #define ELIMINATE_COPY_RELOCS 1
3197
3198 /* Used to track dynamic relocations for local symbols. */
3199 struct ppc_dyn_relocs
3200 {
3201 struct ppc_dyn_relocs *next;
3202
3203 /* The input section of the reloc. */
3204 asection *sec;
3205
3206 /* Total number of relocs copied for the input section. */
3207 unsigned int count : 31;
3208
3209 /* Whether this entry is for STT_GNU_IFUNC symbols. */
3210 unsigned int ifunc : 1;
3211 };
3212
3213 /* PPC ELF linker hash entry. */
3214
3215 struct ppc_elf_link_hash_entry
3216 {
3217 struct elf_link_hash_entry elf;
3218
3219 /* If this symbol is used in the linker created sections, the processor
3220 specific backend uses this field to map the field into the offset
3221 from the beginning of the section. */
3222 elf_linker_section_pointers_t *linker_section_pointer;
3223
3224 /* Track dynamic relocs copied for this symbol. */
3225 struct elf_dyn_relocs *dyn_relocs;
3226
3227 /* Contexts in which symbol is used in the GOT (or TOC).
3228 TLS_GD .. TLS_TLS bits are or'd into the mask as the
3229 corresponding relocs are encountered during check_relocs.
3230 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
3231 indicate the corresponding GOT entry type is not needed. */
3232 #define TLS_GD 1 /* GD reloc. */
3233 #define TLS_LD 2 /* LD reloc. */
3234 #define TLS_TPREL 4 /* TPREL reloc, => IE. */
3235 #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
3236 #define TLS_TLS 16 /* Any TLS reloc. */
3237 #define TLS_TPRELGD 32 /* TPREL reloc resulting from GD->IE. */
3238 #define PLT_IFUNC 64 /* STT_GNU_IFUNC. */
3239 char tls_mask;
3240
3241 /* Nonzero if we have seen a small data relocation referring to this
3242 symbol. */
3243 unsigned char has_sda_refs : 1;
3244
3245 /* Flag use of given relocations. */
3246 unsigned char has_addr16_ha : 1;
3247 unsigned char has_addr16_lo : 1;
3248 };
3249
3250 #define ppc_elf_hash_entry(ent) ((struct ppc_elf_link_hash_entry *) (ent))
3251
3252 /* PPC ELF linker hash table. */
3253
3254 struct ppc_elf_link_hash_table
3255 {
3256 struct elf_link_hash_table elf;
3257
3258 /* Various options passed from the linker. */
3259 struct ppc_elf_params *params;
3260
3261 /* Short-cuts to get to dynamic linker sections. */
3262 asection *glink;
3263 asection *dynsbss;
3264 asection *relsbss;
3265 elf_linker_section_t sdata[2];
3266 asection *sbss;
3267 asection *glink_eh_frame;
3268
3269 /* The (unloaded but important) .rela.plt.unloaded on VxWorks. */
3270 asection *srelplt2;
3271
3272 /* Shortcut to __tls_get_addr. */
3273 struct elf_link_hash_entry *tls_get_addr;
3274
3275 /* The bfd that forced an old-style PLT. */
3276 bfd *old_bfd;
3277
3278 /* TLS local dynamic got entry handling. */
3279 union {
3280 bfd_signed_vma refcount;
3281 bfd_vma offset;
3282 } tlsld_got;
3283
3284 /* Offset of branch table to PltResolve function in glink. */
3285 bfd_vma glink_pltresolve;
3286
3287 /* Size of reserved GOT entries. */
3288 unsigned int got_header_size;
3289 /* Non-zero if allocating the header left a gap. */
3290 unsigned int got_gap;
3291
3292 /* The type of PLT we have chosen to use. */
3293 enum ppc_elf_plt_type plt_type;
3294
3295 /* True if the target system is VxWorks. */
3296 unsigned int is_vxworks:1;
3297
3298 /* Whether there exist local gnu indirect function resolvers,
3299 referenced by dynamic relocations. */
3300 unsigned int local_ifunc_resolver:1;
3301 unsigned int maybe_local_ifunc_resolver:1;
3302
3303 /* Set if tls optimization is enabled. */
3304 unsigned int do_tls_opt:1;
3305
3306 /* The size of PLT entries. */
3307 int plt_entry_size;
3308 /* The distance between adjacent PLT slots. */
3309 int plt_slot_size;
3310 /* The size of the first PLT entry. */
3311 int plt_initial_entry_size;
3312
3313 /* Small local sym cache. */
3314 struct sym_cache sym_cache;
3315 };
3316
3317 /* Rename some of the generic section flags to better document how they
3318 are used for ppc32. The flags are only valid for ppc32 elf objects. */
3319
3320 /* Nonzero if this section has TLS related relocations. */
3321 #define has_tls_reloc sec_flg0
3322
3323 /* Nonzero if this section has a call to __tls_get_addr. */
3324 #define has_tls_get_addr_call sec_flg1
3325
3326 /* Get the PPC ELF linker hash table from a link_info structure. */
3327
3328 #define ppc_elf_hash_table(p) \
3329 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
3330 == PPC32_ELF_DATA ? ((struct ppc_elf_link_hash_table *) ((p)->hash)) : NULL)
3331
3332 /* Create an entry in a PPC ELF linker hash table. */
3333
3334 static struct bfd_hash_entry *
3335 ppc_elf_link_hash_newfunc (struct bfd_hash_entry *entry,
3336 struct bfd_hash_table *table,
3337 const char *string)
3338 {
3339 /* Allocate the structure if it has not already been allocated by a
3340 subclass. */
3341 if (entry == NULL)
3342 {
3343 entry = bfd_hash_allocate (table,
3344 sizeof (struct ppc_elf_link_hash_entry));
3345 if (entry == NULL)
3346 return entry;
3347 }
3348
3349 /* Call the allocation method of the superclass. */
3350 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
3351 if (entry != NULL)
3352 {
3353 ppc_elf_hash_entry (entry)->linker_section_pointer = NULL;
3354 ppc_elf_hash_entry (entry)->dyn_relocs = NULL;
3355 ppc_elf_hash_entry (entry)->tls_mask = 0;
3356 ppc_elf_hash_entry (entry)->has_sda_refs = 0;
3357 }
3358
3359 return entry;
3360 }
3361
3362 /* Create a PPC ELF linker hash table. */
3363
3364 static struct bfd_link_hash_table *
3365 ppc_elf_link_hash_table_create (bfd *abfd)
3366 {
3367 struct ppc_elf_link_hash_table *ret;
3368 static struct ppc_elf_params default_params
3369 = { PLT_OLD, 0, 1, 0, 1, 0, 0, 12, 0, 0, 0 };
3370
3371 ret = bfd_zmalloc (sizeof (struct ppc_elf_link_hash_table));
3372 if (ret == NULL)
3373 return NULL;
3374
3375 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd,
3376 ppc_elf_link_hash_newfunc,
3377 sizeof (struct ppc_elf_link_hash_entry),
3378 PPC32_ELF_DATA))
3379 {
3380 free (ret);
3381 return NULL;
3382 }
3383
3384 ret->elf.init_plt_refcount.refcount = 0;
3385 ret->elf.init_plt_refcount.glist = NULL;
3386 ret->elf.init_plt_offset.offset = 0;
3387 ret->elf.init_plt_offset.glist = NULL;
3388
3389 ret->params = &default_params;
3390
3391 ret->sdata[0].name = ".sdata";
3392 ret->sdata[0].sym_name = "_SDA_BASE_";
3393 ret->sdata[0].bss_name = ".sbss";
3394
3395 ret->sdata[1].name = ".sdata2";
3396 ret->sdata[1].sym_name = "_SDA2_BASE_";
3397 ret->sdata[1].bss_name = ".sbss2";
3398
3399 ret->plt_entry_size = 12;
3400 ret->plt_slot_size = 8;
3401 ret->plt_initial_entry_size = 72;
3402
3403 return &ret->elf.root;
3404 }
3405
3406 /* Hook linker params into hash table. */
3407
3408 void
3409 ppc_elf_link_params (struct bfd_link_info *info, struct ppc_elf_params *params)
3410 {
3411 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
3412
3413 if (htab)
3414 htab->params = params;
3415 params->pagesize_p2 = bfd_log2 (params->pagesize);
3416 }
3417
3418 /* Create .got and the related sections. */
3419
3420 static bfd_boolean
3421 ppc_elf_create_got (bfd *abfd, struct bfd_link_info *info)
3422 {
3423 struct ppc_elf_link_hash_table *htab;
3424
3425 if (!_bfd_elf_create_got_section (abfd, info))
3426 return FALSE;
3427
3428 htab = ppc_elf_hash_table (info);
3429 if (!htab->is_vxworks)
3430 {
3431 /* The powerpc .got has a blrl instruction in it. Mark it
3432 executable. */
3433 flagword flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS
3434 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3435 if (!bfd_set_section_flags (abfd, htab->elf.sgot, flags))
3436 return FALSE;
3437 }
3438
3439 return TRUE;
3440 }
3441
3442 /* Create a special linker section, used for R_PPC_EMB_SDAI16 and
3443 R_PPC_EMB_SDA2I16 pointers. These sections become part of .sdata
3444 and .sdata2. Create _SDA_BASE_ and _SDA2_BASE too. */
3445
3446 static bfd_boolean
3447 ppc_elf_create_linker_section (bfd *abfd,
3448 struct bfd_link_info *info,
3449 flagword flags,
3450 elf_linker_section_t *lsect)
3451 {
3452 asection *s;
3453
3454 flags |= (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
3455 | SEC_LINKER_CREATED);
3456
3457 s = bfd_make_section_anyway_with_flags (abfd, lsect->name, flags);
3458 if (s == NULL)
3459 return FALSE;
3460 lsect->section = s;
3461
3462 /* Define the sym on the first section of this name. */
3463 s = bfd_get_section_by_name (abfd, lsect->name);
3464
3465 lsect->sym = _bfd_elf_define_linkage_sym (abfd, info, s, lsect->sym_name);
3466 if (lsect->sym == NULL)
3467 return FALSE;
3468 lsect->sym->root.u.def.value = 0x8000;
3469 return TRUE;
3470 }
3471
3472 static bfd_boolean
3473 ppc_elf_create_glink (bfd *abfd, struct bfd_link_info *info)
3474 {
3475 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
3476 asection *s;
3477 flagword flags;
3478 int p2align;
3479
3480 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY | SEC_HAS_CONTENTS
3481 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3482 s = bfd_make_section_anyway_with_flags (abfd, ".glink", flags);
3483 htab->glink = s;
3484 p2align = htab->params->ppc476_workaround ? 6 : 4;
3485 if (p2align < htab->params->plt_stub_align)
3486 p2align = htab->params->plt_stub_align;
3487 if (s == NULL
3488 || !bfd_set_section_alignment (abfd, s, p2align))
3489 return FALSE;
3490
3491 if (!info->no_ld_generated_unwind_info)
3492 {
3493 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
3494 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3495 s = bfd_make_section_anyway_with_flags (abfd, ".eh_frame", flags);
3496 htab->glink_eh_frame = s;
3497 if (s == NULL
3498 || !bfd_set_section_alignment (abfd, s, 2))
3499 return FALSE;
3500 }
3501
3502 flags = SEC_ALLOC | SEC_LINKER_CREATED;
3503 s = bfd_make_section_anyway_with_flags (abfd, ".iplt", flags);
3504 htab->elf.iplt = s;
3505 if (s == NULL
3506 || !bfd_set_section_alignment (abfd, s, 4))
3507 return FALSE;
3508
3509 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
3510 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3511 s = bfd_make_section_anyway_with_flags (abfd, ".rela.iplt", flags);
3512 htab->elf.irelplt = s;
3513 if (s == NULL
3514 || ! bfd_set_section_alignment (abfd, s, 2))
3515 return FALSE;
3516
3517 if (!ppc_elf_create_linker_section (abfd, info, 0,
3518 &htab->sdata[0]))
3519 return FALSE;
3520
3521 if (!ppc_elf_create_linker_section (abfd, info, SEC_READONLY,
3522 &htab->sdata[1]))
3523 return FALSE;
3524
3525 return TRUE;
3526 }
3527
3528 /* We have to create .dynsbss and .rela.sbss here so that they get mapped
3529 to output sections (just like _bfd_elf_create_dynamic_sections has
3530 to create .dynbss and .rela.bss). */
3531
3532 static bfd_boolean
3533 ppc_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
3534 {
3535 struct ppc_elf_link_hash_table *htab;
3536 asection *s;
3537 flagword flags;
3538
3539 htab = ppc_elf_hash_table (info);
3540
3541 if (htab->elf.sgot == NULL
3542 && !ppc_elf_create_got (abfd, info))
3543 return FALSE;
3544
3545 if (!_bfd_elf_create_dynamic_sections (abfd, info))
3546 return FALSE;
3547
3548 if (htab->glink == NULL
3549 && !ppc_elf_create_glink (abfd, info))
3550 return FALSE;
3551
3552 s = bfd_make_section_anyway_with_flags (abfd, ".dynsbss",
3553 SEC_ALLOC | SEC_LINKER_CREATED);
3554 htab->dynsbss = s;
3555 if (s == NULL)
3556 return FALSE;
3557
3558 if (! bfd_link_pic (info))
3559 {
3560 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
3561 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3562 s = bfd_make_section_anyway_with_flags (abfd, ".rela.sbss", flags);
3563 htab->relsbss = s;
3564 if (s == NULL
3565 || ! bfd_set_section_alignment (abfd, s, 2))
3566 return FALSE;
3567 }
3568
3569 if (htab->is_vxworks
3570 && !elf_vxworks_create_dynamic_sections (abfd, info, &htab->srelplt2))
3571 return FALSE;
3572
3573 s = htab->elf.splt;
3574 flags = SEC_ALLOC | SEC_CODE | SEC_LINKER_CREATED;
3575 if (htab->plt_type == PLT_VXWORKS)
3576 /* The VxWorks PLT is a loaded section with contents. */
3577 flags |= SEC_HAS_CONTENTS | SEC_LOAD | SEC_READONLY;
3578 return bfd_set_section_flags (abfd, s, flags);
3579 }
3580
3581 /* Copy the extra info we tack onto an elf_link_hash_entry. */
3582
3583 static void
3584 ppc_elf_copy_indirect_symbol (struct bfd_link_info *info,
3585 struct elf_link_hash_entry *dir,
3586 struct elf_link_hash_entry *ind)
3587 {
3588 struct ppc_elf_link_hash_entry *edir, *eind;
3589
3590 edir = (struct ppc_elf_link_hash_entry *) dir;
3591 eind = (struct ppc_elf_link_hash_entry *) ind;
3592
3593 edir->tls_mask |= eind->tls_mask;
3594 edir->has_sda_refs |= eind->has_sda_refs;
3595
3596 if (edir->elf.versioned != versioned_hidden)
3597 edir->elf.ref_dynamic |= eind->elf.ref_dynamic;
3598 edir->elf.ref_regular |= eind->elf.ref_regular;
3599 edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak;
3600 edir->elf.non_got_ref |= eind->elf.non_got_ref;
3601 edir->elf.needs_plt |= eind->elf.needs_plt;
3602 edir->elf.pointer_equality_needed |= eind->elf.pointer_equality_needed;
3603
3604 /* If we were called to copy over info for a weak sym, that's all. */
3605 if (eind->elf.root.type != bfd_link_hash_indirect)
3606 return;
3607
3608 if (eind->dyn_relocs != NULL)
3609 {
3610 if (edir->dyn_relocs != NULL)
3611 {
3612 struct elf_dyn_relocs **pp;
3613 struct elf_dyn_relocs *p;
3614
3615 /* Add reloc counts against the indirect sym to the direct sym
3616 list. Merge any entries against the same section. */
3617 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
3618 {
3619 struct elf_dyn_relocs *q;
3620
3621 for (q = edir->dyn_relocs; q != NULL; q = q->next)
3622 if (q->sec == p->sec)
3623 {
3624 q->pc_count += p->pc_count;
3625 q->count += p->count;
3626 *pp = p->next;
3627 break;
3628 }
3629 if (q == NULL)
3630 pp = &p->next;
3631 }
3632 *pp = edir->dyn_relocs;
3633 }
3634
3635 edir->dyn_relocs = eind->dyn_relocs;
3636 eind->dyn_relocs = NULL;
3637 }
3638
3639 /* Copy over the GOT refcount entries that we may have already seen to
3640 the symbol which just became indirect. */
3641 edir->elf.got.refcount += eind->elf.got.refcount;
3642 eind->elf.got.refcount = 0;
3643
3644 /* And plt entries. */
3645 if (eind->elf.plt.plist != NULL)
3646 {
3647 if (edir->elf.plt.plist != NULL)
3648 {
3649 struct plt_entry **entp;
3650 struct plt_entry *ent;
3651
3652 for (entp = &eind->elf.plt.plist; (ent = *entp) != NULL; )
3653 {
3654 struct plt_entry *dent;
3655
3656 for (dent = edir->elf.plt.plist; dent != NULL; dent = dent->next)
3657 if (dent->sec == ent->sec && dent->addend == ent->addend)
3658 {
3659 dent->plt.refcount += ent->plt.refcount;
3660 *entp = ent->next;
3661 break;
3662 }
3663 if (dent == NULL)
3664 entp = &ent->next;
3665 }
3666 *entp = edir->elf.plt.plist;
3667 }
3668
3669 edir->elf.plt.plist = eind->elf.plt.plist;
3670 eind->elf.plt.plist = NULL;
3671 }
3672
3673 if (eind->elf.dynindx != -1)
3674 {
3675 if (edir->elf.dynindx != -1)
3676 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
3677 edir->elf.dynstr_index);
3678 edir->elf.dynindx = eind->elf.dynindx;
3679 edir->elf.dynstr_index = eind->elf.dynstr_index;
3680 eind->elf.dynindx = -1;
3681 eind->elf.dynstr_index = 0;
3682 }
3683 }
3684
3685 /* Hook called by the linker routine which adds symbols from an object
3686 file. We use it to put .comm items in .sbss, and not .bss. */
3687
3688 static bfd_boolean
3689 ppc_elf_add_symbol_hook (bfd *abfd,
3690 struct bfd_link_info *info,
3691 Elf_Internal_Sym *sym,
3692 const char **namep ATTRIBUTE_UNUSED,
3693 flagword *flagsp ATTRIBUTE_UNUSED,
3694 asection **secp,
3695 bfd_vma *valp)
3696 {
3697 if (sym->st_shndx == SHN_COMMON
3698 && !bfd_link_relocatable (info)
3699 && is_ppc_elf (info->output_bfd)
3700 && sym->st_size <= elf_gp_size (abfd))
3701 {
3702 /* Common symbols less than or equal to -G nn bytes are automatically
3703 put into .sbss. */
3704 struct ppc_elf_link_hash_table *htab;
3705
3706 htab = ppc_elf_hash_table (info);
3707 if (htab->sbss == NULL)
3708 {
3709 flagword flags = SEC_IS_COMMON | SEC_LINKER_CREATED;
3710
3711 if (!htab->elf.dynobj)
3712 htab->elf.dynobj = abfd;
3713
3714 htab->sbss = bfd_make_section_anyway_with_flags (htab->elf.dynobj,
3715 ".sbss",
3716 flags);
3717 if (htab->sbss == NULL)
3718 return FALSE;
3719 }
3720
3721 *secp = htab->sbss;
3722 *valp = sym->st_size;
3723 }
3724
3725 if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC
3726 && (abfd->flags & DYNAMIC) == 0
3727 && bfd_get_flavour (info->output_bfd) == bfd_target_elf_flavour)
3728 elf_tdata (info->output_bfd)->has_gnu_symbols |= elf_gnu_symbol_ifunc;
3729
3730 return TRUE;
3731 }
3732 \f
3733 /* Find a linker generated pointer with a given addend and type. */
3734
3735 static elf_linker_section_pointers_t *
3736 elf_find_pointer_linker_section
3737 (elf_linker_section_pointers_t *linker_pointers,
3738 bfd_vma addend,
3739 elf_linker_section_t *lsect)
3740 {
3741 for ( ; linker_pointers != NULL; linker_pointers = linker_pointers->next)
3742 if (lsect == linker_pointers->lsect && addend == linker_pointers->addend)
3743 return linker_pointers;
3744
3745 return NULL;
3746 }
3747
3748 /* Allocate a pointer to live in a linker created section. */
3749
3750 static bfd_boolean
3751 elf_allocate_pointer_linker_section (bfd *abfd,
3752 elf_linker_section_t *lsect,
3753 struct elf_link_hash_entry *h,
3754 const Elf_Internal_Rela *rel)
3755 {
3756 elf_linker_section_pointers_t **ptr_linker_section_ptr = NULL;
3757 elf_linker_section_pointers_t *linker_section_ptr;
3758 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
3759 bfd_size_type amt;
3760
3761 BFD_ASSERT (lsect != NULL);
3762
3763 /* Is this a global symbol? */
3764 if (h != NULL)
3765 {
3766 struct ppc_elf_link_hash_entry *eh;
3767
3768 /* Has this symbol already been allocated? If so, our work is done. */
3769 eh = (struct ppc_elf_link_hash_entry *) h;
3770 if (elf_find_pointer_linker_section (eh->linker_section_pointer,
3771 rel->r_addend,
3772 lsect))
3773 return TRUE;
3774
3775 ptr_linker_section_ptr = &eh->linker_section_pointer;
3776 }
3777 else
3778 {
3779 BFD_ASSERT (is_ppc_elf (abfd));
3780
3781 /* Allocation of a pointer to a local symbol. */
3782 elf_linker_section_pointers_t **ptr = elf_local_ptr_offsets (abfd);
3783
3784 /* Allocate a table to hold the local symbols if first time. */
3785 if (!ptr)
3786 {
3787 unsigned int num_symbols = elf_symtab_hdr (abfd).sh_info;
3788
3789 amt = num_symbols;
3790 amt *= sizeof (elf_linker_section_pointers_t *);
3791 ptr = bfd_zalloc (abfd, amt);
3792
3793 if (!ptr)
3794 return FALSE;
3795
3796 elf_local_ptr_offsets (abfd) = ptr;
3797 }
3798
3799 /* Has this symbol already been allocated? If so, our work is done. */
3800 if (elf_find_pointer_linker_section (ptr[r_symndx],
3801 rel->r_addend,
3802 lsect))
3803 return TRUE;
3804
3805 ptr_linker_section_ptr = &ptr[r_symndx];
3806 }
3807
3808 /* Allocate space for a pointer in the linker section, and allocate
3809 a new pointer record from internal memory. */
3810 BFD_ASSERT (ptr_linker_section_ptr != NULL);
3811 amt = sizeof (elf_linker_section_pointers_t);
3812 linker_section_ptr = bfd_alloc (abfd, amt);
3813
3814 if (!linker_section_ptr)
3815 return FALSE;
3816
3817 linker_section_ptr->next = *ptr_linker_section_ptr;
3818 linker_section_ptr->addend = rel->r_addend;
3819 linker_section_ptr->lsect = lsect;
3820 *ptr_linker_section_ptr = linker_section_ptr;
3821
3822 if (!bfd_set_section_alignment (lsect->section->owner, lsect->section, 2))
3823 return FALSE;
3824 linker_section_ptr->offset = lsect->section->size;
3825 lsect->section->size += 4;
3826
3827 #ifdef DEBUG
3828 fprintf (stderr,
3829 "Create pointer in linker section %s, offset = %ld, section size = %ld\n",
3830 lsect->name, (long) linker_section_ptr->offset,
3831 (long) lsect->section->size);
3832 #endif
3833
3834 return TRUE;
3835 }
3836
3837 static struct plt_entry **
3838 update_local_sym_info (bfd *abfd,
3839 Elf_Internal_Shdr *symtab_hdr,
3840 unsigned long r_symndx,
3841 int tls_type)
3842 {
3843 bfd_signed_vma *local_got_refcounts = elf_local_got_refcounts (abfd);
3844 struct plt_entry **local_plt;
3845 char *local_got_tls_masks;
3846
3847 if (local_got_refcounts == NULL)
3848 {
3849 bfd_size_type size = symtab_hdr->sh_info;
3850
3851 size *= (sizeof (*local_got_refcounts)
3852 + sizeof (*local_plt)
3853 + sizeof (*local_got_tls_masks));
3854 local_got_refcounts = bfd_zalloc (abfd, size);
3855 if (local_got_refcounts == NULL)
3856 return NULL;
3857 elf_local_got_refcounts (abfd) = local_got_refcounts;
3858 }
3859
3860 local_plt = (struct plt_entry **) (local_got_refcounts + symtab_hdr->sh_info);
3861 local_got_tls_masks = (char *) (local_plt + symtab_hdr->sh_info);
3862 local_got_tls_masks[r_symndx] |= tls_type;
3863 if (tls_type != PLT_IFUNC)
3864 local_got_refcounts[r_symndx] += 1;
3865 return local_plt + r_symndx;
3866 }
3867
3868 static bfd_boolean
3869 update_plt_info (bfd *abfd, struct plt_entry **plist,
3870 asection *sec, bfd_vma addend)
3871 {
3872 struct plt_entry *ent;
3873
3874 if (addend < 32768)
3875 sec = NULL;
3876 for (ent = *plist; ent != NULL; ent = ent->next)
3877 if (ent->sec == sec && ent->addend == addend)
3878 break;
3879 if (ent == NULL)
3880 {
3881 bfd_size_type amt = sizeof (*ent);
3882 ent = bfd_alloc (abfd, amt);
3883 if (ent == NULL)
3884 return FALSE;
3885 ent->next = *plist;
3886 ent->sec = sec;
3887 ent->addend = addend;
3888 ent->plt.refcount = 0;
3889 *plist = ent;
3890 }
3891 ent->plt.refcount += 1;
3892 return TRUE;
3893 }
3894
3895 static struct plt_entry *
3896 find_plt_ent (struct plt_entry **plist, asection *sec, bfd_vma addend)
3897 {
3898 struct plt_entry *ent;
3899
3900 if (addend < 32768)
3901 sec = NULL;
3902 for (ent = *plist; ent != NULL; ent = ent->next)
3903 if (ent->sec == sec && ent->addend == addend)
3904 break;
3905 return ent;
3906 }
3907
3908 static bfd_boolean
3909 is_branch_reloc (enum elf_ppc_reloc_type r_type)
3910 {
3911 return (r_type == R_PPC_PLTREL24
3912 || r_type == R_PPC_LOCAL24PC
3913 || r_type == R_PPC_REL24
3914 || r_type == R_PPC_REL14
3915 || r_type == R_PPC_REL14_BRTAKEN
3916 || r_type == R_PPC_REL14_BRNTAKEN
3917 || r_type == R_PPC_ADDR24
3918 || r_type == R_PPC_ADDR14
3919 || r_type == R_PPC_ADDR14_BRTAKEN
3920 || r_type == R_PPC_ADDR14_BRNTAKEN
3921 || r_type == R_PPC_VLE_REL24);
3922 }
3923
3924 static void
3925 bad_shared_reloc (bfd *abfd, enum elf_ppc_reloc_type r_type)
3926 {
3927 _bfd_error_handler
3928 /* xgettext:c-format */
3929 (_("%B: relocation %s cannot be used when making a shared object"),
3930 abfd,
3931 ppc_elf_howto_table[r_type]->name);
3932 bfd_set_error (bfd_error_bad_value);
3933 }
3934
3935 /* Look through the relocs for a section during the first phase, and
3936 allocate space in the global offset table or procedure linkage
3937 table. */
3938
3939 static bfd_boolean
3940 ppc_elf_check_relocs (bfd *abfd,
3941 struct bfd_link_info *info,
3942 asection *sec,
3943 const Elf_Internal_Rela *relocs)
3944 {
3945 struct ppc_elf_link_hash_table *htab;
3946 Elf_Internal_Shdr *symtab_hdr;
3947 struct elf_link_hash_entry **sym_hashes;
3948 const Elf_Internal_Rela *rel;
3949 const Elf_Internal_Rela *rel_end;
3950 asection *got2, *sreloc;
3951 struct elf_link_hash_entry *tga;
3952
3953 if (bfd_link_relocatable (info))
3954 return TRUE;
3955
3956 /* Don't do anything special with non-loaded, non-alloced sections.
3957 In particular, any relocs in such sections should not affect GOT
3958 and PLT reference counting (ie. we don't allow them to create GOT
3959 or PLT entries), there's no possibility or desire to optimize TLS
3960 relocs, and there's not much point in propagating relocs to shared
3961 libs that the dynamic linker won't relocate. */
3962 if ((sec->flags & SEC_ALLOC) == 0)
3963 return TRUE;
3964
3965 #ifdef DEBUG
3966 _bfd_error_handler ("ppc_elf_check_relocs called for section %A in %B",
3967 sec, abfd);
3968 #endif
3969
3970 BFD_ASSERT (is_ppc_elf (abfd));
3971
3972 /* Initialize howto table if not already done. */
3973 if (!ppc_elf_howto_table[R_PPC_ADDR32])
3974 ppc_elf_howto_init ();
3975
3976 htab = ppc_elf_hash_table (info);
3977 if (htab->glink == NULL)
3978 {
3979 if (htab->elf.dynobj == NULL)
3980 htab->elf.dynobj = abfd;
3981 if (!ppc_elf_create_glink (htab->elf.dynobj, info))
3982 return FALSE;
3983 }
3984 tga = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
3985 FALSE, FALSE, TRUE);
3986 symtab_hdr = &elf_symtab_hdr (abfd);
3987 sym_hashes = elf_sym_hashes (abfd);
3988 got2 = bfd_get_section_by_name (abfd, ".got2");
3989 sreloc = NULL;
3990
3991 rel_end = relocs + sec->reloc_count;
3992 for (rel = relocs; rel < rel_end; rel++)
3993 {
3994 unsigned long r_symndx;
3995 enum elf_ppc_reloc_type r_type;
3996 struct elf_link_hash_entry *h;
3997 int tls_type;
3998 struct plt_entry **ifunc;
3999
4000 r_symndx = ELF32_R_SYM (rel->r_info);
4001 if (r_symndx < symtab_hdr->sh_info)
4002 h = NULL;
4003 else
4004 {
4005 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4006 while (h->root.type == bfd_link_hash_indirect
4007 || h->root.type == bfd_link_hash_warning)
4008 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4009 }
4010
4011 /* If a relocation refers to _GLOBAL_OFFSET_TABLE_, create the .got.
4012 This shows up in particular in an R_PPC_ADDR32 in the eabi
4013 startup code. */
4014 if (h != NULL
4015 && htab->elf.sgot == NULL
4016 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
4017 {
4018 if (htab->elf.dynobj == NULL)
4019 htab->elf.dynobj = abfd;
4020 if (!ppc_elf_create_got (htab->elf.dynobj, info))
4021 return FALSE;
4022 BFD_ASSERT (h == htab->elf.hgot);
4023 }
4024
4025 tls_type = 0;
4026 r_type = ELF32_R_TYPE (rel->r_info);
4027 ifunc = NULL;
4028 if (h == NULL && !htab->is_vxworks)
4029 {
4030 Elf_Internal_Sym *isym = bfd_sym_from_r_symndx (&htab->sym_cache,
4031 abfd, r_symndx);
4032 if (isym == NULL)
4033 return FALSE;
4034
4035 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
4036 {
4037 /* Set PLT_IFUNC flag for this sym, no GOT entry yet. */
4038 ifunc = update_local_sym_info (abfd, symtab_hdr, r_symndx,
4039 PLT_IFUNC);
4040 if (ifunc == NULL)
4041 return FALSE;
4042
4043 /* STT_GNU_IFUNC symbols must have a PLT entry;
4044 In a non-pie executable even when there are
4045 no plt calls. */
4046 if (!bfd_link_pic (info)
4047 || is_branch_reloc (r_type))
4048 {
4049 bfd_vma addend = 0;
4050 if (r_type == R_PPC_PLTREL24)
4051 {
4052 ppc_elf_tdata (abfd)->makes_plt_call = 1;
4053 if (bfd_link_pic (info))
4054 addend = rel->r_addend;
4055 }
4056 if (!update_plt_info (abfd, ifunc, got2, addend))
4057 return FALSE;
4058 }
4059 }
4060 }
4061
4062 if (!htab->is_vxworks
4063 && is_branch_reloc (r_type)
4064 && h != NULL
4065 && h == tga)
4066 {
4067 if (rel != relocs
4068 && (ELF32_R_TYPE (rel[-1].r_info) == R_PPC_TLSGD
4069 || ELF32_R_TYPE (rel[-1].r_info) == R_PPC_TLSLD))
4070 /* We have a new-style __tls_get_addr call with a marker
4071 reloc. */
4072 ;
4073 else
4074 /* Mark this section as having an old-style call. */
4075 sec->has_tls_get_addr_call = 1;
4076 }
4077
4078 switch (r_type)
4079 {
4080 case R_PPC_TLSGD:
4081 case R_PPC_TLSLD:
4082 /* These special tls relocs tie a call to __tls_get_addr with
4083 its parameter symbol. */
4084 break;
4085
4086 case R_PPC_GOT_TLSLD16:
4087 case R_PPC_GOT_TLSLD16_LO:
4088 case R_PPC_GOT_TLSLD16_HI:
4089 case R_PPC_GOT_TLSLD16_HA:
4090 tls_type = TLS_TLS | TLS_LD;
4091 goto dogottls;
4092
4093 case R_PPC_GOT_TLSGD16:
4094 case R_PPC_GOT_TLSGD16_LO:
4095 case R_PPC_GOT_TLSGD16_HI:
4096 case R_PPC_GOT_TLSGD16_HA:
4097 tls_type = TLS_TLS | TLS_GD;
4098 goto dogottls;
4099
4100 case R_PPC_GOT_TPREL16:
4101 case R_PPC_GOT_TPREL16_LO:
4102 case R_PPC_GOT_TPREL16_HI:
4103 case R_PPC_GOT_TPREL16_HA:
4104 if (bfd_link_dll (info))
4105 info->flags |= DF_STATIC_TLS;
4106 tls_type = TLS_TLS | TLS_TPREL;
4107 goto dogottls;
4108
4109 case R_PPC_GOT_DTPREL16:
4110 case R_PPC_GOT_DTPREL16_LO:
4111 case R_PPC_GOT_DTPREL16_HI:
4112 case R_PPC_GOT_DTPREL16_HA:
4113 tls_type = TLS_TLS | TLS_DTPREL;
4114 dogottls:
4115 sec->has_tls_reloc = 1;
4116 /* Fall through. */
4117
4118 /* GOT16 relocations */
4119 case R_PPC_GOT16:
4120 case R_PPC_GOT16_LO:
4121 case R_PPC_GOT16_HI:
4122 case R_PPC_GOT16_HA:
4123 /* This symbol requires a global offset table entry. */
4124 if (htab->elf.sgot == NULL)
4125 {
4126 if (htab->elf.dynobj == NULL)
4127 htab->elf.dynobj = abfd;
4128 if (!ppc_elf_create_got (htab->elf.dynobj, info))
4129 return FALSE;
4130 }
4131 if (h != NULL)
4132 {
4133 h->got.refcount += 1;
4134 ppc_elf_hash_entry (h)->tls_mask |= tls_type;
4135 }
4136 else
4137 /* This is a global offset table entry for a local symbol. */
4138 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, tls_type))
4139 return FALSE;
4140
4141 /* We may also need a plt entry if the symbol turns out to be
4142 an ifunc. */
4143 if (h != NULL && !bfd_link_pic (info))
4144 {
4145 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
4146 return FALSE;
4147 }
4148 break;
4149
4150 /* Indirect .sdata relocation. */
4151 case R_PPC_EMB_SDAI16:
4152 if (bfd_link_pic (info))
4153 {
4154 bad_shared_reloc (abfd, r_type);
4155 return FALSE;
4156 }
4157 htab->sdata[0].sym->ref_regular = 1;
4158 if (!elf_allocate_pointer_linker_section (abfd, &htab->sdata[0],
4159 h, rel))
4160 return FALSE;
4161 if (h != NULL)
4162 {
4163 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4164 h->non_got_ref = TRUE;
4165 }
4166 break;
4167
4168 /* Indirect .sdata2 relocation. */
4169 case R_PPC_EMB_SDA2I16:
4170 if (bfd_link_pic (info))
4171 {
4172 bad_shared_reloc (abfd, r_type);
4173 return FALSE;
4174 }
4175 htab->sdata[1].sym->ref_regular = 1;
4176 if (!elf_allocate_pointer_linker_section (abfd, &htab->sdata[1],
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 case R_PPC_SDAREL16:
4187 htab->sdata[0].sym->ref_regular = 1;
4188 /* Fall through. */
4189
4190 case R_PPC_VLE_SDAREL_LO16A:
4191 case R_PPC_VLE_SDAREL_LO16D:
4192 case R_PPC_VLE_SDAREL_HI16A:
4193 case R_PPC_VLE_SDAREL_HI16D:
4194 case R_PPC_VLE_SDAREL_HA16A:
4195 case R_PPC_VLE_SDAREL_HA16D:
4196 if (h != NULL)
4197 {
4198 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4199 h->non_got_ref = TRUE;
4200 }
4201 break;
4202
4203 case R_PPC_VLE_REL8:
4204 case R_PPC_VLE_REL15:
4205 case R_PPC_VLE_REL24:
4206 case R_PPC_VLE_LO16A:
4207 case R_PPC_VLE_LO16D:
4208 case R_PPC_VLE_HI16A:
4209 case R_PPC_VLE_HI16D:
4210 case R_PPC_VLE_HA16A:
4211 case R_PPC_VLE_HA16D:
4212 case R_PPC_VLE_ADDR20:
4213 break;
4214
4215 case R_PPC_EMB_SDA2REL:
4216 if (bfd_link_pic (info))
4217 {
4218 bad_shared_reloc (abfd, r_type);
4219 return FALSE;
4220 }
4221 htab->sdata[1].sym->ref_regular = 1;
4222 if (h != NULL)
4223 {
4224 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4225 h->non_got_ref = TRUE;
4226 }
4227 break;
4228
4229 case R_PPC_VLE_SDA21_LO:
4230 case R_PPC_VLE_SDA21:
4231 case R_PPC_EMB_SDA21:
4232 case R_PPC_EMB_RELSDA:
4233 if (bfd_link_pic (info))
4234 {
4235 bad_shared_reloc (abfd, r_type);
4236 return FALSE;
4237 }
4238 if (h != NULL)
4239 {
4240 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4241 h->non_got_ref = TRUE;
4242 }
4243 break;
4244
4245 case R_PPC_EMB_NADDR32:
4246 case R_PPC_EMB_NADDR16:
4247 case R_PPC_EMB_NADDR16_LO:
4248 case R_PPC_EMB_NADDR16_HI:
4249 case R_PPC_EMB_NADDR16_HA:
4250 if (bfd_link_pic (info))
4251 {
4252 bad_shared_reloc (abfd, r_type);
4253 return FALSE;
4254 }
4255 if (h != NULL)
4256 h->non_got_ref = TRUE;
4257 break;
4258
4259 case R_PPC_PLTREL24:
4260 if (h == NULL)
4261 break;
4262 /* Fall through */
4263 case R_PPC_PLT32:
4264 case R_PPC_PLTREL32:
4265 case R_PPC_PLT16_LO:
4266 case R_PPC_PLT16_HI:
4267 case R_PPC_PLT16_HA:
4268 #ifdef DEBUG
4269 fprintf (stderr, "Reloc requires a PLT entry\n");
4270 #endif
4271 /* This symbol requires a procedure linkage table entry. */
4272 if (h == NULL)
4273 {
4274 if (ifunc == NULL)
4275 {
4276 /* It does not make sense to have a procedure linkage
4277 table entry for a non-ifunc local symbol. */
4278 info->callbacks->einfo
4279 /* xgettext:c-format */
4280 (_("%H: %s reloc against local symbol\n"),
4281 abfd, sec, rel->r_offset,
4282 ppc_elf_howto_table[r_type]->name);
4283 bfd_set_error (bfd_error_bad_value);
4284 return FALSE;
4285 }
4286 }
4287 else
4288 {
4289 bfd_vma addend = 0;
4290
4291 if (r_type == R_PPC_PLTREL24)
4292 {
4293 ppc_elf_tdata (abfd)->makes_plt_call = 1;
4294 if (bfd_link_pic (info))
4295 addend = rel->r_addend;
4296 }
4297 h->needs_plt = 1;
4298 if (!update_plt_info (abfd, &h->plt.plist, got2, addend))
4299 return FALSE;
4300 }
4301 break;
4302
4303 /* The following relocations don't need to propagate the
4304 relocation if linking a shared object since they are
4305 section relative. */
4306 case R_PPC_SECTOFF:
4307 case R_PPC_SECTOFF_LO:
4308 case R_PPC_SECTOFF_HI:
4309 case R_PPC_SECTOFF_HA:
4310 case R_PPC_DTPREL16:
4311 case R_PPC_DTPREL16_LO:
4312 case R_PPC_DTPREL16_HI:
4313 case R_PPC_DTPREL16_HA:
4314 case R_PPC_TOC16:
4315 break;
4316
4317 case R_PPC_REL16:
4318 case R_PPC_REL16_LO:
4319 case R_PPC_REL16_HI:
4320 case R_PPC_REL16_HA:
4321 case R_PPC_REL16DX_HA:
4322 ppc_elf_tdata (abfd)->has_rel16 = 1;
4323 break;
4324
4325 /* These are just markers. */
4326 case R_PPC_TLS:
4327 case R_PPC_EMB_MRKREF:
4328 case R_PPC_NONE:
4329 case R_PPC_max:
4330 case R_PPC_RELAX:
4331 case R_PPC_RELAX_PLT:
4332 case R_PPC_RELAX_PLTREL24:
4333 case R_PPC_16DX_HA:
4334 break;
4335
4336 /* These should only appear in dynamic objects. */
4337 case R_PPC_COPY:
4338 case R_PPC_GLOB_DAT:
4339 case R_PPC_JMP_SLOT:
4340 case R_PPC_RELATIVE:
4341 case R_PPC_IRELATIVE:
4342 break;
4343
4344 /* These aren't handled yet. We'll report an error later. */
4345 case R_PPC_ADDR30:
4346 case R_PPC_EMB_RELSEC16:
4347 case R_PPC_EMB_RELST_LO:
4348 case R_PPC_EMB_RELST_HI:
4349 case R_PPC_EMB_RELST_HA:
4350 case R_PPC_EMB_BIT_FLD:
4351 break;
4352
4353 /* This refers only to functions defined in the shared library. */
4354 case R_PPC_LOCAL24PC:
4355 if (h != NULL && h == htab->elf.hgot && htab->plt_type == PLT_UNSET)
4356 {
4357 htab->plt_type = PLT_OLD;
4358 htab->old_bfd = abfd;
4359 }
4360 if (h != NULL && h->type == STT_GNU_IFUNC)
4361 {
4362 h->needs_plt = 1;
4363 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
4364 return FALSE;
4365 }
4366 break;
4367
4368 /* This relocation describes the C++ object vtable hierarchy.
4369 Reconstruct it for later use during GC. */
4370 case R_PPC_GNU_VTINHERIT:
4371 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
4372 return FALSE;
4373 break;
4374
4375 /* This relocation describes which C++ vtable entries are actually
4376 used. Record for later use during GC. */
4377 case R_PPC_GNU_VTENTRY:
4378 BFD_ASSERT (h != NULL);
4379 if (h != NULL
4380 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
4381 return FALSE;
4382 break;
4383
4384 /* We shouldn't really be seeing TPREL32. */
4385 case R_PPC_TPREL32:
4386 case R_PPC_TPREL16:
4387 case R_PPC_TPREL16_LO:
4388 case R_PPC_TPREL16_HI:
4389 case R_PPC_TPREL16_HA:
4390 if (bfd_link_dll (info))
4391 info->flags |= DF_STATIC_TLS;
4392 goto dodyn;
4393
4394 /* Nor these. */
4395 case R_PPC_DTPMOD32:
4396 case R_PPC_DTPREL32:
4397 goto dodyn;
4398
4399 case R_PPC_REL32:
4400 if (h == NULL
4401 && got2 != NULL
4402 && (sec->flags & SEC_CODE) != 0
4403 && bfd_link_pic (info)
4404 && htab->plt_type == PLT_UNSET)
4405 {
4406 /* Old -fPIC gcc code has .long LCTOC1-LCFx just before
4407 the start of a function, which assembles to a REL32
4408 reference to .got2. If we detect one of these, then
4409 force the old PLT layout because the linker cannot
4410 reliably deduce the GOT pointer value needed for
4411 PLT call stubs. */
4412 asection *s;
4413 Elf_Internal_Sym *isym;
4414
4415 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
4416 abfd, r_symndx);
4417 if (isym == NULL)
4418 return FALSE;
4419
4420 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
4421 if (s == got2)
4422 {
4423 htab->plt_type = PLT_OLD;
4424 htab->old_bfd = abfd;
4425 }
4426 }
4427 if (h == NULL || h == htab->elf.hgot)
4428 break;
4429 /* fall through */
4430
4431 case R_PPC_ADDR32:
4432 case R_PPC_ADDR16:
4433 case R_PPC_ADDR16_LO:
4434 case R_PPC_ADDR16_HI:
4435 case R_PPC_ADDR16_HA:
4436 case R_PPC_UADDR32:
4437 case R_PPC_UADDR16:
4438 if (h != NULL && !bfd_link_pic (info))
4439 {
4440 /* We may need a plt entry if the symbol turns out to be
4441 a function defined in a dynamic object. */
4442 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
4443 return FALSE;
4444
4445 /* We may need a copy reloc too. */
4446 h->non_got_ref = 1;
4447 h->pointer_equality_needed = 1;
4448 if (r_type == R_PPC_ADDR16_HA)
4449 ppc_elf_hash_entry (h)->has_addr16_ha = 1;
4450 if (r_type == R_PPC_ADDR16_LO)
4451 ppc_elf_hash_entry (h)->has_addr16_lo = 1;
4452 }
4453 goto dodyn;
4454
4455 case R_PPC_REL24:
4456 case R_PPC_REL14:
4457 case R_PPC_REL14_BRTAKEN:
4458 case R_PPC_REL14_BRNTAKEN:
4459 if (h == NULL)
4460 break;
4461 if (h == htab->elf.hgot)
4462 {
4463 if (htab->plt_type == PLT_UNSET)
4464 {
4465 htab->plt_type = PLT_OLD;
4466 htab->old_bfd = abfd;
4467 }
4468 break;
4469 }
4470 /* fall through */
4471
4472 case R_PPC_ADDR24:
4473 case R_PPC_ADDR14:
4474 case R_PPC_ADDR14_BRTAKEN:
4475 case R_PPC_ADDR14_BRNTAKEN:
4476 if (h != NULL && !bfd_link_pic (info))
4477 {
4478 /* We may need a plt entry if the symbol turns out to be
4479 a function defined in a dynamic object. */
4480 h->needs_plt = 1;
4481 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
4482 return FALSE;
4483 break;
4484 }
4485
4486 dodyn:
4487 /* If we are creating a shared library, and this is a reloc
4488 against a global symbol, or a non PC relative reloc
4489 against a local symbol, then we need to copy the reloc
4490 into the shared library. However, if we are linking with
4491 -Bsymbolic, we do not need to copy a reloc against a
4492 global symbol which is defined in an object we are
4493 including in the link (i.e., DEF_REGULAR is set). At
4494 this point we have not seen all the input files, so it is
4495 possible that DEF_REGULAR is not set now but will be set
4496 later (it is never cleared). In case of a weak definition,
4497 DEF_REGULAR may be cleared later by a strong definition in
4498 a shared library. We account for that possibility below by
4499 storing information in the dyn_relocs field of the hash
4500 table entry. A similar situation occurs when creating
4501 shared libraries and symbol visibility changes render the
4502 symbol local.
4503
4504 If on the other hand, we are creating an executable, we
4505 may need to keep relocations for symbols satisfied by a
4506 dynamic library if we manage to avoid copy relocs for the
4507 symbol. */
4508 if ((bfd_link_pic (info)
4509 && (must_be_dyn_reloc (info, r_type)
4510 || (h != NULL
4511 && (!SYMBOLIC_BIND (info, h)
4512 || h->root.type == bfd_link_hash_defweak
4513 || !h->def_regular))))
4514 || (ELIMINATE_COPY_RELOCS
4515 && !bfd_link_pic (info)
4516 && h != NULL
4517 && (h->root.type == bfd_link_hash_defweak
4518 || !h->def_regular)))
4519 {
4520 #ifdef DEBUG
4521 fprintf (stderr,
4522 "ppc_elf_check_relocs needs to "
4523 "create relocation for %s\n",
4524 (h && h->root.root.string
4525 ? h->root.root.string : "<unknown>"));
4526 #endif
4527 if (sreloc == NULL)
4528 {
4529 if (htab->elf.dynobj == NULL)
4530 htab->elf.dynobj = abfd;
4531
4532 sreloc = _bfd_elf_make_dynamic_reloc_section
4533 (sec, htab->elf.dynobj, 2, abfd, /*rela?*/ TRUE);
4534
4535 if (sreloc == NULL)
4536 return FALSE;
4537 }
4538
4539 /* If this is a global symbol, we count the number of
4540 relocations we need for this symbol. */
4541 if (h != NULL)
4542 {
4543 struct elf_dyn_relocs *p;
4544 struct elf_dyn_relocs **rel_head;
4545
4546 rel_head = &ppc_elf_hash_entry (h)->dyn_relocs;
4547 p = *rel_head;
4548 if (p == NULL || p->sec != sec)
4549 {
4550 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
4551 if (p == NULL)
4552 return FALSE;
4553 p->next = *rel_head;
4554 *rel_head = p;
4555 p->sec = sec;
4556 p->count = 0;
4557 p->pc_count = 0;
4558 }
4559 p->count += 1;
4560 if (!must_be_dyn_reloc (info, r_type))
4561 p->pc_count += 1;
4562 }
4563 else
4564 {
4565 /* Track dynamic relocs needed for local syms too.
4566 We really need local syms available to do this
4567 easily. Oh well. */
4568 struct ppc_dyn_relocs *p;
4569 struct ppc_dyn_relocs **rel_head;
4570 bfd_boolean is_ifunc;
4571 asection *s;
4572 void *vpp;
4573 Elf_Internal_Sym *isym;
4574
4575 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
4576 abfd, r_symndx);
4577 if (isym == NULL)
4578 return FALSE;
4579
4580 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
4581 if (s == NULL)
4582 s = sec;
4583
4584 vpp = &elf_section_data (s)->local_dynrel;
4585 rel_head = (struct ppc_dyn_relocs **) vpp;
4586 is_ifunc = ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC;
4587 p = *rel_head;
4588 if (p != NULL && p->sec == sec && p->ifunc != is_ifunc)
4589 p = p->next;
4590 if (p == NULL || p->sec != sec || p->ifunc != is_ifunc)
4591 {
4592 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
4593 if (p == NULL)
4594 return FALSE;
4595 p->next = *rel_head;
4596 *rel_head = p;
4597 p->sec = sec;
4598 p->ifunc = is_ifunc;
4599 p->count = 0;
4600 }
4601 p->count += 1;
4602 }
4603 }
4604
4605 break;
4606 }
4607 }
4608
4609 return TRUE;
4610 }
4611 \f
4612 /* Warn for conflicting Tag_GNU_Power_ABI_FP attributes between IBFD
4613 and OBFD, and merge non-conflicting ones. */
4614 void
4615 _bfd_elf_ppc_merge_fp_attributes (bfd *ibfd, struct bfd_link_info *info)
4616 {
4617 bfd *obfd = info->output_bfd;
4618 obj_attribute *in_attr, *in_attrs;
4619 obj_attribute *out_attr, *out_attrs;
4620
4621 in_attrs = elf_known_obj_attributes (ibfd)[OBJ_ATTR_GNU];
4622 out_attrs = elf_known_obj_attributes (obfd)[OBJ_ATTR_GNU];
4623
4624 in_attr = &in_attrs[Tag_GNU_Power_ABI_FP];
4625 out_attr = &out_attrs[Tag_GNU_Power_ABI_FP];
4626
4627 if (in_attr->i != out_attr->i)
4628 {
4629 int in_fp = in_attr->i & 3;
4630 int out_fp = out_attr->i & 3;
4631
4632 if (in_fp == 0)
4633 ;
4634 else if (out_fp == 0)
4635 {
4636 out_attr->type = 1;
4637 out_attr->i ^= in_fp;
4638 }
4639 else if (out_fp != 2 && in_fp == 2)
4640 _bfd_error_handler
4641 /* xgettext:c-format */
4642 (_("Warning: %B uses hard float, %B uses soft float"), obfd, ibfd);
4643 else if (out_fp == 2 && in_fp != 2)
4644 _bfd_error_handler
4645 /* xgettext:c-format */
4646 (_("Warning: %B uses hard float, %B uses soft float"), ibfd, obfd);
4647 else if (out_fp == 1 && in_fp == 3)
4648 _bfd_error_handler
4649 /* xgettext:c-format */
4650 (_("Warning: %B uses double-precision hard float, "
4651 "%B uses single-precision hard float"), obfd, ibfd);
4652 else if (out_fp == 3 && in_fp == 1)
4653 _bfd_error_handler
4654 /* xgettext:c-format */
4655 (_("Warning: %B uses double-precision hard float, "
4656 "%B uses single-precision hard float"), ibfd, obfd);
4657
4658 in_fp = in_attr->i & 0xc;
4659 out_fp = out_attr->i & 0xc;
4660 if (in_fp == 0)
4661 ;
4662 else if (out_fp == 0)
4663 {
4664 out_attr->type = 1;
4665 out_attr->i ^= in_fp;
4666 }
4667 else if (out_fp != 2 * 4 && in_fp == 2 * 4)
4668 _bfd_error_handler
4669 /* xgettext:c-format */
4670 (_("Warning: %B uses 64-bit long double, "
4671 "%B uses 128-bit long double"), ibfd, obfd);
4672 else if (in_fp != 2 * 4 && out_fp == 2 * 4)
4673 _bfd_error_handler
4674 /* xgettext:c-format */
4675 (_("Warning: %B uses 64-bit long double, "
4676 "%B uses 128-bit long double"), obfd, ibfd);
4677 else if (out_fp == 1 * 4 && in_fp == 3 * 4)
4678 _bfd_error_handler
4679 /* xgettext:c-format */
4680 (_("Warning: %B uses IBM long double, "
4681 "%B uses IEEE long double"), ibfd, obfd);
4682 else if (out_fp == 3 * 4 && in_fp == 1 * 4)
4683 _bfd_error_handler
4684 /* xgettext:c-format */
4685 (_("Warning: %B uses IBM long double, "
4686 "%B uses IEEE long double"), obfd, ibfd);
4687 }
4688 }
4689
4690 /* Merge object attributes from IBFD into OBFD. Warn if
4691 there are conflicting attributes. */
4692 static bfd_boolean
4693 ppc_elf_merge_obj_attributes (bfd *ibfd, struct bfd_link_info *info)
4694 {
4695 bfd *obfd;
4696 obj_attribute *in_attr, *in_attrs;
4697 obj_attribute *out_attr, *out_attrs;
4698
4699 _bfd_elf_ppc_merge_fp_attributes (ibfd, info);
4700
4701 obfd = info->output_bfd;
4702 in_attrs = elf_known_obj_attributes (ibfd)[OBJ_ATTR_GNU];
4703 out_attrs = elf_known_obj_attributes (obfd)[OBJ_ATTR_GNU];
4704
4705 /* Check for conflicting Tag_GNU_Power_ABI_Vector attributes and
4706 merge non-conflicting ones. */
4707 in_attr = &in_attrs[Tag_GNU_Power_ABI_Vector];
4708 out_attr = &out_attrs[Tag_GNU_Power_ABI_Vector];
4709 if (in_attr->i != out_attr->i)
4710 {
4711 int in_vec = in_attr->i & 3;
4712 int out_vec = out_attr->i & 3;
4713
4714 if (in_vec == 0)
4715 ;
4716 else if (out_vec == 0)
4717 {
4718 out_attr->type = 1;
4719 out_attr->i = in_vec;
4720 }
4721 /* For now, allow generic to transition to AltiVec or SPE
4722 without a warning. If GCC marked files with their stack
4723 alignment and used don't-care markings for files which are
4724 not affected by the vector ABI, we could warn about this
4725 case too. */
4726 else if (in_vec == 1)
4727 ;
4728 else if (out_vec == 1)
4729 {
4730 out_attr->type = 1;
4731 out_attr->i = in_vec;
4732 }
4733 else if (out_vec < in_vec)
4734 _bfd_error_handler
4735 /* xgettext:c-format */
4736 (_("Warning: %B uses AltiVec vector ABI, %B uses SPE vector ABI"),
4737 obfd, ibfd);
4738 else if (out_vec > in_vec)
4739 _bfd_error_handler
4740 /* xgettext:c-format */
4741 (_("Warning: %B uses AltiVec vector ABI, %B uses SPE vector ABI"),
4742 ibfd, obfd);
4743 }
4744
4745 /* Check for conflicting Tag_GNU_Power_ABI_Struct_Return attributes
4746 and merge non-conflicting ones. */
4747 in_attr = &in_attrs[Tag_GNU_Power_ABI_Struct_Return];
4748 out_attr = &out_attrs[Tag_GNU_Power_ABI_Struct_Return];
4749 if (in_attr->i != out_attr->i)
4750 {
4751 int in_struct = in_attr->i & 3;
4752 int out_struct = out_attr->i & 3;
4753
4754 if (in_struct == 0 || in_struct == 3)
4755 ;
4756 else if (out_struct == 0)
4757 {
4758 out_attr->type = 1;
4759 out_attr->i = in_struct;
4760 }
4761 else if (out_struct < in_struct)
4762 _bfd_error_handler
4763 /* xgettext:c-format */
4764 (_("Warning: %B uses r3/r4 for small structure returns, "
4765 "%B uses memory"), obfd, ibfd);
4766 else if (out_struct > in_struct)
4767 _bfd_error_handler
4768 /* xgettext:c-format */
4769 (_("Warning: %B uses r3/r4 for small structure returns, "
4770 "%B uses memory"), ibfd, obfd);
4771 }
4772
4773 /* Merge Tag_compatibility attributes and any common GNU ones. */
4774 _bfd_elf_merge_object_attributes (ibfd, info);
4775
4776 return TRUE;
4777 }
4778
4779 /* Merge backend specific data from an object file to the output
4780 object file when linking. */
4781
4782 static bfd_boolean
4783 ppc_elf_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info)
4784 {
4785 bfd *obfd = info->output_bfd;
4786 flagword old_flags;
4787 flagword new_flags;
4788 bfd_boolean error;
4789
4790 if (!is_ppc_elf (ibfd) || !is_ppc_elf (obfd))
4791 return TRUE;
4792
4793 /* Check if we have the same endianness. */
4794 if (! _bfd_generic_verify_endian_match (ibfd, info))
4795 return FALSE;
4796
4797 if (!ppc_elf_merge_obj_attributes (ibfd, info))
4798 return FALSE;
4799
4800 new_flags = elf_elfheader (ibfd)->e_flags;
4801 old_flags = elf_elfheader (obfd)->e_flags;
4802 if (!elf_flags_init (obfd))
4803 {
4804 /* First call, no flags set. */
4805 elf_flags_init (obfd) = TRUE;
4806 elf_elfheader (obfd)->e_flags = new_flags;
4807 }
4808
4809 /* Compatible flags are ok. */
4810 else if (new_flags == old_flags)
4811 ;
4812
4813 /* Incompatible flags. */
4814 else
4815 {
4816 /* Warn about -mrelocatable mismatch. Allow -mrelocatable-lib
4817 to be linked with either. */
4818 error = FALSE;
4819 if ((new_flags & EF_PPC_RELOCATABLE) != 0
4820 && (old_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0)
4821 {
4822 error = TRUE;
4823 _bfd_error_handler
4824 (_("%B: compiled with -mrelocatable and linked with "
4825 "modules compiled normally"), ibfd);
4826 }
4827 else if ((new_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0
4828 && (old_flags & EF_PPC_RELOCATABLE) != 0)
4829 {
4830 error = TRUE;
4831 _bfd_error_handler
4832 (_("%B: compiled normally and linked with "
4833 "modules compiled with -mrelocatable"), ibfd);
4834 }
4835
4836 /* The output is -mrelocatable-lib iff both the input files are. */
4837 if (! (new_flags & EF_PPC_RELOCATABLE_LIB))
4838 elf_elfheader (obfd)->e_flags &= ~EF_PPC_RELOCATABLE_LIB;
4839
4840 /* The output is -mrelocatable iff it can't be -mrelocatable-lib,
4841 but each input file is either -mrelocatable or -mrelocatable-lib. */
4842 if (! (elf_elfheader (obfd)->e_flags & EF_PPC_RELOCATABLE_LIB)
4843 && (new_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE))
4844 && (old_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE)))
4845 elf_elfheader (obfd)->e_flags |= EF_PPC_RELOCATABLE;
4846
4847 /* Do not warn about eabi vs. V.4 mismatch, just or in the bit if
4848 any module uses it. */
4849 elf_elfheader (obfd)->e_flags |= (new_flags & EF_PPC_EMB);
4850
4851 new_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
4852 old_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
4853
4854 /* Warn about any other mismatches. */
4855 if (new_flags != old_flags)
4856 {
4857 error = TRUE;
4858 _bfd_error_handler
4859 /* xgettext:c-format */
4860 (_("%B: uses different e_flags (%#x) fields "
4861 "than previous modules (%#x)"),
4862 ibfd, new_flags, old_flags);
4863 }
4864
4865 if (error)
4866 {
4867 bfd_set_error (bfd_error_bad_value);
4868 return FALSE;
4869 }
4870 }
4871
4872 return TRUE;
4873 }
4874
4875 static void
4876 ppc_elf_vle_split16 (bfd *input_bfd,
4877 asection *input_section,
4878 unsigned long offset,
4879 bfd_byte *loc,
4880 bfd_vma value,
4881 split16_format_type split16_format,
4882 bfd_boolean fixup)
4883 {
4884 unsigned int insn, opcode, top5;
4885
4886 insn = bfd_get_32 (input_bfd, loc);
4887 opcode = insn & 0xfc00f800;
4888 if (opcode == E_OR2I_INSN
4889 || opcode == E_AND2I_DOT_INSN
4890 || opcode == E_OR2IS_INSN
4891 || opcode == E_LIS_INSN
4892 || opcode == E_AND2IS_DOT_INSN)
4893 {
4894 if (split16_format != split16a_type)
4895 {
4896 if (fixup)
4897 split16_format = split16a_type;
4898 else
4899 _bfd_error_handler
4900 /* xgettext:c-format */
4901 (_("%B(%A+0x%lx): expected 16A style relocation on 0x%08x insn"),
4902 input_bfd, input_section, offset, opcode);
4903 }
4904 }
4905 else if (opcode == E_ADD2I_DOT_INSN
4906 || opcode == E_ADD2IS_INSN
4907 || opcode == E_CMP16I_INSN
4908 || opcode == E_MULL2I_INSN
4909 || opcode == E_CMPL16I_INSN
4910 || opcode == E_CMPH16I_INSN
4911 || opcode == E_CMPHL16I_INSN)
4912 {
4913 if (split16_format != split16d_type)
4914 {
4915 if (fixup)
4916 split16_format = split16d_type;
4917 else
4918 _bfd_error_handler
4919 /* xgettext:c-format */
4920 (_("%B(%A+0x%lx): expected 16D style relocation on 0x%08x insn"),
4921 input_bfd, input_section, offset, opcode);
4922 }
4923 }
4924 top5 = value & 0xf800;
4925 top5 = top5 << (split16_format == split16a_type ? 5 : 10);
4926 insn &= (split16_format == split16a_type ? ~0x1f07ff : ~0x3e007ff);
4927 insn |= top5;
4928 insn |= value & 0x7ff;
4929 bfd_put_32 (input_bfd, insn, loc);
4930 }
4931
4932 static void
4933 ppc_elf_vle_split20 (bfd *output_bfd, bfd_byte *loc, bfd_vma value)
4934 {
4935 unsigned int insn;
4936
4937 insn = bfd_get_32 (output_bfd, loc);
4938 /* We have an li20 field, bits 17..20, 11..15, 21..31. */
4939 /* Top 4 bits of value to 17..20. */
4940 insn |= (value & 0xf0000) >> 5;
4941 /* Next 5 bits of the value to 11..15. */
4942 insn |= (value & 0xf800) << 5;
4943 /* And the final 11 bits of the value to bits 21 to 31. */
4944 insn |= value & 0x7ff;
4945 bfd_put_32 (output_bfd, insn, loc);
4946 }
4947
4948 \f
4949 /* Choose which PLT scheme to use, and set .plt flags appropriately.
4950 Returns -1 on error, 0 for old PLT, 1 for new PLT. */
4951 int
4952 ppc_elf_select_plt_layout (bfd *output_bfd ATTRIBUTE_UNUSED,
4953 struct bfd_link_info *info)
4954 {
4955 struct ppc_elf_link_hash_table *htab;
4956 flagword flags;
4957
4958 htab = ppc_elf_hash_table (info);
4959
4960 if (htab->plt_type == PLT_UNSET)
4961 {
4962 struct elf_link_hash_entry *h;
4963
4964 if (htab->params->plt_style == PLT_OLD)
4965 htab->plt_type = PLT_OLD;
4966 else if (bfd_link_pic (info)
4967 && htab->elf.dynamic_sections_created
4968 && (h = elf_link_hash_lookup (&htab->elf, "_mcount",
4969 FALSE, FALSE, TRUE)) != NULL
4970 && (h->type == STT_FUNC
4971 || h->needs_plt)
4972 && h->ref_regular
4973 && !(SYMBOL_CALLS_LOCAL (info, h)
4974 || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)))
4975 {
4976 /* Profiling of shared libs (and pies) is not supported with
4977 secure plt, because ppc32 does profiling before a
4978 function prologue and a secure plt pic call stubs needs
4979 r30 to be set up. */
4980 htab->plt_type = PLT_OLD;
4981 }
4982 else
4983 {
4984 bfd *ibfd;
4985 enum ppc_elf_plt_type plt_type = htab->params->plt_style;
4986
4987 /* Look through the reloc flags left by ppc_elf_check_relocs.
4988 Use the old style bss plt if a file makes plt calls
4989 without using the new relocs, and if ld isn't given
4990 --secure-plt and we never see REL16 relocs. */
4991 if (plt_type == PLT_UNSET)
4992 plt_type = PLT_OLD;
4993 for (ibfd = info->input_bfds; ibfd; ibfd = ibfd->link.next)
4994 if (is_ppc_elf (ibfd))
4995 {
4996 if (ppc_elf_tdata (ibfd)->has_rel16)
4997 plt_type = PLT_NEW;
4998 else if (ppc_elf_tdata (ibfd)->makes_plt_call)
4999 {
5000 plt_type = PLT_OLD;
5001 htab->old_bfd = ibfd;
5002 break;
5003 }
5004 }
5005 htab->plt_type = plt_type;
5006 }
5007 }
5008 if (htab->plt_type == PLT_OLD && htab->params->plt_style == PLT_NEW)
5009 {
5010 if (htab->old_bfd != NULL)
5011 info->callbacks->einfo (_("%P: bss-plt forced due to %B\n"),
5012 htab->old_bfd);
5013 else
5014 info->callbacks->einfo (_("%P: bss-plt forced by profiling\n"));
5015 }
5016
5017 BFD_ASSERT (htab->plt_type != PLT_VXWORKS);
5018
5019 if (htab->plt_type == PLT_NEW)
5020 {
5021 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
5022 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
5023
5024 /* The new PLT is a loaded section. */
5025 if (htab->elf.splt != NULL
5026 && !bfd_set_section_flags (htab->elf.dynobj, htab->elf.splt, flags))
5027 return -1;
5028
5029 /* The new GOT is not executable. */
5030 if (htab->elf.sgot != NULL
5031 && !bfd_set_section_flags (htab->elf.dynobj, htab->elf.sgot, flags))
5032 return -1;
5033 }
5034 else
5035 {
5036 /* Stop an unused .glink section from affecting .text alignment. */
5037 if (htab->glink != NULL
5038 && !bfd_set_section_alignment (htab->elf.dynobj, htab->glink, 0))
5039 return -1;
5040 }
5041 return htab->plt_type == PLT_NEW;
5042 }
5043 \f
5044 /* Return the section that should be marked against GC for a given
5045 relocation. */
5046
5047 static asection *
5048 ppc_elf_gc_mark_hook (asection *sec,
5049 struct bfd_link_info *info,
5050 Elf_Internal_Rela *rel,
5051 struct elf_link_hash_entry *h,
5052 Elf_Internal_Sym *sym)
5053 {
5054 if (h != NULL)
5055 switch (ELF32_R_TYPE (rel->r_info))
5056 {
5057 case R_PPC_GNU_VTINHERIT:
5058 case R_PPC_GNU_VTENTRY:
5059 return NULL;
5060 }
5061
5062 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
5063 }
5064 \f
5065 /* Set plt output section type, htab->tls_get_addr, and call the
5066 generic ELF tls_setup function. */
5067
5068 asection *
5069 ppc_elf_tls_setup (bfd *obfd, struct bfd_link_info *info)
5070 {
5071 struct ppc_elf_link_hash_table *htab;
5072
5073 htab = ppc_elf_hash_table (info);
5074 htab->tls_get_addr = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
5075 FALSE, FALSE, TRUE);
5076 if (htab->plt_type != PLT_NEW)
5077 htab->params->no_tls_get_addr_opt = TRUE;
5078
5079 if (!htab->params->no_tls_get_addr_opt)
5080 {
5081 struct elf_link_hash_entry *opt, *tga;
5082 opt = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_opt",
5083 FALSE, FALSE, TRUE);
5084 if (opt != NULL
5085 && (opt->root.type == bfd_link_hash_defined
5086 || opt->root.type == bfd_link_hash_defweak))
5087 {
5088 /* If glibc supports an optimized __tls_get_addr call stub,
5089 signalled by the presence of __tls_get_addr_opt, and we'll
5090 be calling __tls_get_addr via a plt call stub, then
5091 make __tls_get_addr point to __tls_get_addr_opt. */
5092 tga = htab->tls_get_addr;
5093 if (htab->elf.dynamic_sections_created
5094 && tga != NULL
5095 && (tga->type == STT_FUNC
5096 || tga->needs_plt)
5097 && !(SYMBOL_CALLS_LOCAL (info, tga)
5098 || UNDEFWEAK_NO_DYNAMIC_RELOC (info, tga)))
5099 {
5100 struct plt_entry *ent;
5101 for (ent = tga->plt.plist; ent != NULL; ent = ent->next)
5102 if (ent->plt.refcount > 0)
5103 break;
5104 if (ent != NULL)
5105 {
5106 tga->root.type = bfd_link_hash_indirect;
5107 tga->root.u.i.link = &opt->root;
5108 ppc_elf_copy_indirect_symbol (info, opt, tga);
5109 opt->mark = 1;
5110 if (opt->dynindx != -1)
5111 {
5112 /* Use __tls_get_addr_opt in dynamic relocations. */
5113 opt->dynindx = -1;
5114 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
5115 opt->dynstr_index);
5116 if (!bfd_elf_link_record_dynamic_symbol (info, opt))
5117 return FALSE;
5118 }
5119 htab->tls_get_addr = opt;
5120 }
5121 }
5122 }
5123 else
5124 htab->params->no_tls_get_addr_opt = TRUE;
5125 }
5126 if (htab->plt_type == PLT_NEW
5127 && htab->elf.splt != NULL
5128 && htab->elf.splt->output_section != NULL)
5129 {
5130 elf_section_type (htab->elf.splt->output_section) = SHT_PROGBITS;
5131 elf_section_flags (htab->elf.splt->output_section) = SHF_ALLOC + SHF_WRITE;
5132 }
5133
5134 return _bfd_elf_tls_setup (obfd, info);
5135 }
5136
5137 /* Return TRUE iff REL is a branch reloc with a global symbol matching
5138 HASH. */
5139
5140 static bfd_boolean
5141 branch_reloc_hash_match (const bfd *ibfd,
5142 const Elf_Internal_Rela *rel,
5143 const struct elf_link_hash_entry *hash)
5144 {
5145 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
5146 enum elf_ppc_reloc_type r_type = ELF32_R_TYPE (rel->r_info);
5147 unsigned int r_symndx = ELF32_R_SYM (rel->r_info);
5148
5149 if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type))
5150 {
5151 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
5152 struct elf_link_hash_entry *h;
5153
5154 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5155 while (h->root.type == bfd_link_hash_indirect
5156 || h->root.type == bfd_link_hash_warning)
5157 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5158 if (h == hash)
5159 return TRUE;
5160 }
5161 return FALSE;
5162 }
5163
5164 /* Run through all the TLS relocs looking for optimization
5165 opportunities. */
5166
5167 bfd_boolean
5168 ppc_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED,
5169 struct bfd_link_info *info)
5170 {
5171 bfd *ibfd;
5172 asection *sec;
5173 struct ppc_elf_link_hash_table *htab;
5174 int pass;
5175
5176 if (!bfd_link_executable (info))
5177 return TRUE;
5178
5179 htab = ppc_elf_hash_table (info);
5180 if (htab == NULL)
5181 return FALSE;
5182
5183 /* Make two passes through the relocs. First time check that tls
5184 relocs involved in setting up a tls_get_addr call are indeed
5185 followed by such a call. If they are not, don't do any tls
5186 optimization. On the second pass twiddle tls_mask flags to
5187 notify relocate_section that optimization can be done, and
5188 adjust got and plt refcounts. */
5189 for (pass = 0; pass < 2; ++pass)
5190 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
5191 {
5192 Elf_Internal_Sym *locsyms = NULL;
5193 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
5194 asection *got2 = bfd_get_section_by_name (ibfd, ".got2");
5195
5196 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
5197 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
5198 {
5199 Elf_Internal_Rela *relstart, *rel, *relend;
5200 int expecting_tls_get_addr = 0;
5201
5202 /* Read the relocations. */
5203 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
5204 info->keep_memory);
5205 if (relstart == NULL)
5206 return FALSE;
5207
5208 relend = relstart + sec->reloc_count;
5209 for (rel = relstart; rel < relend; rel++)
5210 {
5211 enum elf_ppc_reloc_type r_type;
5212 unsigned long r_symndx;
5213 struct elf_link_hash_entry *h = NULL;
5214 char *tls_mask;
5215 char tls_set, tls_clear;
5216 bfd_boolean is_local;
5217 bfd_signed_vma *got_count;
5218
5219 r_symndx = ELF32_R_SYM (rel->r_info);
5220 if (r_symndx >= symtab_hdr->sh_info)
5221 {
5222 struct elf_link_hash_entry **sym_hashes;
5223
5224 sym_hashes = elf_sym_hashes (ibfd);
5225 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5226 while (h->root.type == bfd_link_hash_indirect
5227 || h->root.type == bfd_link_hash_warning)
5228 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5229 }
5230
5231 is_local = FALSE;
5232 if (h == NULL
5233 || !h->def_dynamic)
5234 is_local = TRUE;
5235
5236 r_type = ELF32_R_TYPE (rel->r_info);
5237 /* If this section has old-style __tls_get_addr calls
5238 without marker relocs, then check that each
5239 __tls_get_addr call reloc is preceded by a reloc
5240 that conceivably belongs to the __tls_get_addr arg
5241 setup insn. If we don't find matching arg setup
5242 relocs, don't do any tls optimization. */
5243 if (pass == 0
5244 && sec->has_tls_get_addr_call
5245 && h != NULL
5246 && h == htab->tls_get_addr
5247 && !expecting_tls_get_addr
5248 && is_branch_reloc (r_type))
5249 {
5250 info->callbacks->minfo ("%H __tls_get_addr lost arg, "
5251 "TLS optimization disabled\n",
5252 ibfd, sec, rel->r_offset);
5253 if (elf_section_data (sec)->relocs != relstart)
5254 free (relstart);
5255 return TRUE;
5256 }
5257
5258 expecting_tls_get_addr = 0;
5259 switch (r_type)
5260 {
5261 case R_PPC_GOT_TLSLD16:
5262 case R_PPC_GOT_TLSLD16_LO:
5263 expecting_tls_get_addr = 1;
5264 /* Fall through. */
5265
5266 case R_PPC_GOT_TLSLD16_HI:
5267 case R_PPC_GOT_TLSLD16_HA:
5268 /* These relocs should never be against a symbol
5269 defined in a shared lib. Leave them alone if
5270 that turns out to be the case. */
5271 if (!is_local)
5272 continue;
5273
5274 /* LD -> LE */
5275 tls_set = 0;
5276 tls_clear = TLS_LD;
5277 break;
5278
5279 case R_PPC_GOT_TLSGD16:
5280 case R_PPC_GOT_TLSGD16_LO:
5281 expecting_tls_get_addr = 1;
5282 /* Fall through. */
5283
5284 case R_PPC_GOT_TLSGD16_HI:
5285 case R_PPC_GOT_TLSGD16_HA:
5286 if (is_local)
5287 /* GD -> LE */
5288 tls_set = 0;
5289 else
5290 /* GD -> IE */
5291 tls_set = TLS_TLS | TLS_TPRELGD;
5292 tls_clear = TLS_GD;
5293 break;
5294
5295 case R_PPC_GOT_TPREL16:
5296 case R_PPC_GOT_TPREL16_LO:
5297 case R_PPC_GOT_TPREL16_HI:
5298 case R_PPC_GOT_TPREL16_HA:
5299 if (is_local)
5300 {
5301 /* IE -> LE */
5302 tls_set = 0;
5303 tls_clear = TLS_TPREL;
5304 break;
5305 }
5306 else
5307 continue;
5308
5309 case R_PPC_TLSGD:
5310 case R_PPC_TLSLD:
5311 expecting_tls_get_addr = 2;
5312 tls_set = 0;
5313 tls_clear = 0;
5314 break;
5315
5316 default:
5317 continue;
5318 }
5319
5320 if (pass == 0)
5321 {
5322 if (!expecting_tls_get_addr
5323 || (expecting_tls_get_addr == 1
5324 && !sec->has_tls_get_addr_call))
5325 continue;
5326
5327 if (rel + 1 < relend
5328 && branch_reloc_hash_match (ibfd, rel + 1,
5329 htab->tls_get_addr))
5330 continue;
5331
5332 /* Uh oh, we didn't find the expected call. We
5333 could just mark this symbol to exclude it
5334 from tls optimization but it's safer to skip
5335 the entire optimization. */
5336 info->callbacks->minfo (_("%H arg lost __tls_get_addr, "
5337 "TLS optimization disabled\n"),
5338 ibfd, sec, rel->r_offset);
5339 if (elf_section_data (sec)->relocs != relstart)
5340 free (relstart);
5341 return TRUE;
5342 }
5343
5344 if (expecting_tls_get_addr)
5345 {
5346 struct plt_entry *ent;
5347 bfd_vma addend = 0;
5348
5349 if (bfd_link_pic (info)
5350 && ELF32_R_TYPE (rel[1].r_info) == R_PPC_PLTREL24)
5351 addend = rel[1].r_addend;
5352 ent = find_plt_ent (&htab->tls_get_addr->plt.plist,
5353 got2, addend);
5354 if (ent != NULL && ent->plt.refcount > 0)
5355 ent->plt.refcount -= 1;
5356
5357 if (expecting_tls_get_addr == 2)
5358 continue;
5359 }
5360
5361 if (h != NULL)
5362 {
5363 tls_mask = &ppc_elf_hash_entry (h)->tls_mask;
5364 got_count = &h->got.refcount;
5365 }
5366 else
5367 {
5368 bfd_signed_vma *lgot_refs;
5369 struct plt_entry **local_plt;
5370 char *lgot_masks;
5371
5372 if (locsyms == NULL)
5373 {
5374 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
5375 if (locsyms == NULL)
5376 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
5377 symtab_hdr->sh_info,
5378 0, NULL, NULL, NULL);
5379 if (locsyms == NULL)
5380 {
5381 if (elf_section_data (sec)->relocs != relstart)
5382 free (relstart);
5383 return FALSE;
5384 }
5385 }
5386 lgot_refs = elf_local_got_refcounts (ibfd);
5387 if (lgot_refs == NULL)
5388 abort ();
5389 local_plt = (struct plt_entry **)
5390 (lgot_refs + symtab_hdr->sh_info);
5391 lgot_masks = (char *) (local_plt + symtab_hdr->sh_info);
5392 tls_mask = &lgot_masks[r_symndx];
5393 got_count = &lgot_refs[r_symndx];
5394 }
5395
5396 if (tls_set == 0)
5397 {
5398 /* We managed to get rid of a got entry. */
5399 if (*got_count > 0)
5400 *got_count -= 1;
5401 }
5402
5403 *tls_mask |= tls_set;
5404 *tls_mask &= ~tls_clear;
5405 }
5406
5407 if (elf_section_data (sec)->relocs != relstart)
5408 free (relstart);
5409 }
5410
5411 if (locsyms != NULL
5412 && (symtab_hdr->contents != (unsigned char *) locsyms))
5413 {
5414 if (!info->keep_memory)
5415 free (locsyms);
5416 else
5417 symtab_hdr->contents = (unsigned char *) locsyms;
5418 }
5419 }
5420 htab->do_tls_opt = 1;
5421 return TRUE;
5422 }
5423 \f
5424 /* Find dynamic relocs for H that apply to read-only sections. */
5425
5426 static asection *
5427 readonly_dynrelocs (struct elf_link_hash_entry *h)
5428 {
5429 struct elf_dyn_relocs *p;
5430
5431 for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next)
5432 {
5433 asection *s = p->sec->output_section;
5434
5435 if (s != NULL && (s->flags & SEC_READONLY) != 0)
5436 return p->sec;
5437 }
5438 return NULL;
5439 }
5440
5441 /* Return true if we have dynamic relocs against H or any of its weak
5442 aliases, that apply to read-only sections. Cannot be used after
5443 size_dynamic_sections. */
5444
5445 static bfd_boolean
5446 alias_readonly_dynrelocs (struct elf_link_hash_entry *h)
5447 {
5448 struct ppc_elf_link_hash_entry *eh = ppc_elf_hash_entry (h);
5449 do
5450 {
5451 if (readonly_dynrelocs (&eh->elf))
5452 return TRUE;
5453 eh = ppc_elf_hash_entry (eh->elf.u.alias);
5454 } while (eh != NULL && &eh->elf != h);
5455
5456 return FALSE;
5457 }
5458
5459 /* Return whether H has pc-relative dynamic relocs. */
5460
5461 static bfd_boolean
5462 pc_dynrelocs (struct elf_link_hash_entry *h)
5463 {
5464 struct elf_dyn_relocs *p;
5465
5466 for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next)
5467 if (p->pc_count != 0)
5468 return TRUE;
5469 return FALSE;
5470 }
5471
5472 /* Adjust a symbol defined by a dynamic object and referenced by a
5473 regular object. The current definition is in some section of the
5474 dynamic object, but we're not including those sections. We have to
5475 change the definition to something the rest of the link can
5476 understand. */
5477
5478 static bfd_boolean
5479 ppc_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
5480 struct elf_link_hash_entry *h)
5481 {
5482 struct ppc_elf_link_hash_table *htab;
5483 asection *s;
5484
5485 #ifdef DEBUG
5486 fprintf (stderr, "ppc_elf_adjust_dynamic_symbol called for %s\n",
5487 h->root.root.string);
5488 #endif
5489
5490 /* Make sure we know what is going on here. */
5491 htab = ppc_elf_hash_table (info);
5492 BFD_ASSERT (htab->elf.dynobj != NULL
5493 && (h->needs_plt
5494 || h->type == STT_GNU_IFUNC
5495 || h->is_weakalias
5496 || (h->def_dynamic
5497 && h->ref_regular
5498 && !h->def_regular)));
5499
5500 /* Deal with function syms. */
5501 if (h->type == STT_FUNC
5502 || h->type == STT_GNU_IFUNC
5503 || h->needs_plt)
5504 {
5505 bfd_boolean local = (SYMBOL_CALLS_LOCAL (info, h)
5506 || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h));
5507 /* Discard dyn_relocs when non-pic if we've decided that a
5508 function symbol is local. */
5509 if (!bfd_link_pic (info) && local)
5510 ppc_elf_hash_entry (h)->dyn_relocs = NULL;
5511
5512 /* Clear procedure linkage table information for any symbol that
5513 won't need a .plt entry. */
5514 struct plt_entry *ent;
5515 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
5516 if (ent->plt.refcount > 0)
5517 break;
5518 if (ent == NULL
5519 || (h->type != STT_GNU_IFUNC && local))
5520 {
5521 /* A PLT entry is not required/allowed when:
5522
5523 1. We are not using ld.so; because then the PLT entry
5524 can't be set up, so we can't use one. In this case,
5525 ppc_elf_adjust_dynamic_symbol won't even be called.
5526
5527 2. GC has rendered the entry unused.
5528
5529 3. We know for certain that a call to this symbol
5530 will go to this object, or will remain undefined. */
5531 h->plt.plist = NULL;
5532 h->needs_plt = 0;
5533 h->pointer_equality_needed = 0;
5534 }
5535 else
5536 {
5537 /* Taking a function's address in a read/write section
5538 doesn't require us to define the function symbol in the
5539 executable on a plt call stub. A dynamic reloc can
5540 be used instead, giving better runtime performance.
5541 (Calls via that function pointer don't need to bounce
5542 through the plt call stub.) Similarly, use a dynamic
5543 reloc for a weak reference when possible, allowing the
5544 resolution of the symbol to be set at load time rather
5545 than link time. */
5546 if ((h->pointer_equality_needed
5547 || (h->non_got_ref
5548 && !h->ref_regular_nonweak
5549 && !UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)))
5550 && !htab->is_vxworks
5551 && !ppc_elf_hash_entry (h)->has_sda_refs
5552 && !readonly_dynrelocs (h))
5553 {
5554 h->pointer_equality_needed = 0;
5555 /* If we haven't seen a branch reloc then we don't need
5556 a plt entry. */
5557 if (!h->needs_plt)
5558 h->plt.plist = NULL;
5559 }
5560 else if (!bfd_link_pic (info))
5561 /* We are going to be defining the function symbol on the
5562 plt stub, so no dyn_relocs needed when non-pic. */
5563 ppc_elf_hash_entry (h)->dyn_relocs = NULL;
5564 }
5565 h->protected_def = 0;
5566 /* Function symbols can't have copy relocs. */
5567 return TRUE;
5568 }
5569 else
5570 h->plt.plist = NULL;
5571
5572 /* If this is a weak symbol, and there is a real definition, the
5573 processor independent code will have arranged for us to see the
5574 real definition first, and we can just use the same value. */
5575 if (h->is_weakalias)
5576 {
5577 struct elf_link_hash_entry *def = weakdef (h);
5578 BFD_ASSERT (def->root.type == bfd_link_hash_defined);
5579 h->root.u.def.section = def->root.u.def.section;
5580 h->root.u.def.value = def->root.u.def.value;
5581 if (def->root.u.def.section == htab->elf.sdynbss
5582 || def->root.u.def.section == htab->elf.sdynrelro
5583 || def->root.u.def.section == htab->dynsbss)
5584 ppc_elf_hash_entry (h)->dyn_relocs = NULL;
5585 return TRUE;
5586 }
5587
5588 /* This is a reference to a symbol defined by a dynamic object which
5589 is not a function. */
5590
5591 /* If we are creating a shared library, we must presume that the
5592 only references to the symbol are via the global offset table.
5593 For such cases we need not do anything here; the relocations will
5594 be handled correctly by relocate_section. */
5595 if (bfd_link_pic (info))
5596 {
5597 h->protected_def = 0;
5598 return TRUE;
5599 }
5600
5601 /* If there are no references to this symbol that do not use the
5602 GOT, we don't need to generate a copy reloc. */
5603 if (!h->non_got_ref)
5604 {
5605 h->protected_def = 0;
5606 return TRUE;
5607 }
5608
5609 /* Protected variables do not work with .dynbss. The copy in
5610 .dynbss won't be used by the shared library with the protected
5611 definition for the variable. Editing to PIC, or text relocations
5612 are preferable to an incorrect program. */
5613 if (h->protected_def)
5614 {
5615 if (ELIMINATE_COPY_RELOCS
5616 && ppc_elf_hash_entry (h)->has_addr16_ha
5617 && ppc_elf_hash_entry (h)->has_addr16_lo
5618 && htab->params->pic_fixup == 0
5619 && info->disable_target_specific_optimizations <= 1)
5620 htab->params->pic_fixup = 1;
5621 return TRUE;
5622 }
5623
5624 /* If -z nocopyreloc was given, we won't generate them either. */
5625 if (info->nocopyreloc)
5626 return TRUE;
5627
5628 /* If we don't find any dynamic relocs in read-only sections, then
5629 we'll be keeping the dynamic relocs and avoiding the copy reloc.
5630 We can't do this if there are any small data relocations. This
5631 doesn't work on VxWorks, where we can not have dynamic
5632 relocations (other than copy and jump slot relocations) in an
5633 executable. */
5634 if (ELIMINATE_COPY_RELOCS
5635 && !ppc_elf_hash_entry (h)->has_sda_refs
5636 && !htab->is_vxworks
5637 && !h->def_regular
5638 && !alias_readonly_dynrelocs (h))
5639 return TRUE;
5640
5641 /* We must allocate the symbol in our .dynbss section, which will
5642 become part of the .bss section of the executable. There will be
5643 an entry for this symbol in the .dynsym section. The dynamic
5644 object will contain position independent code, so all references
5645 from the dynamic object to this symbol will go through the global
5646 offset table. The dynamic linker will use the .dynsym entry to
5647 determine the address it must put in the global offset table, so
5648 both the dynamic object and the regular object will refer to the
5649 same memory location for the variable.
5650
5651 Of course, if the symbol is referenced using SDAREL relocs, we
5652 must instead allocate it in .sbss. */
5653 if (ppc_elf_hash_entry (h)->has_sda_refs)
5654 s = htab->dynsbss;
5655 else if ((h->root.u.def.section->flags & SEC_READONLY) != 0)
5656 s = htab->elf.sdynrelro;
5657 else
5658 s = htab->elf.sdynbss;
5659 BFD_ASSERT (s != NULL);
5660
5661 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
5662 {
5663 asection *srel;
5664
5665 /* We must generate a R_PPC_COPY reloc to tell the dynamic
5666 linker to copy the initial value out of the dynamic object
5667 and into the runtime process image. */
5668 if (ppc_elf_hash_entry (h)->has_sda_refs)
5669 srel = htab->relsbss;
5670 else if ((h->root.u.def.section->flags & SEC_READONLY) != 0)
5671 srel = htab->elf.sreldynrelro;
5672 else
5673 srel = htab->elf.srelbss;
5674 BFD_ASSERT (srel != NULL);
5675 srel->size += sizeof (Elf32_External_Rela);
5676 h->needs_copy = 1;
5677 }
5678
5679 /* We no longer want dyn_relocs. */
5680 ppc_elf_hash_entry (h)->dyn_relocs = NULL;
5681 return _bfd_elf_adjust_dynamic_copy (info, h, s);
5682 }
5683 \f
5684 /* Generate a symbol to mark plt call stubs. For non-PIC code the sym is
5685 xxxxxxxx.plt_call32.<callee> where xxxxxxxx is a hex number, usually 0,
5686 specifying the addend on the plt relocation. For -fpic code, the sym
5687 is xxxxxxxx.plt_pic32.<callee>, and for -fPIC
5688 xxxxxxxx.got2.plt_pic32.<callee>. */
5689
5690 static bfd_boolean
5691 add_stub_sym (struct plt_entry *ent,
5692 struct elf_link_hash_entry *h,
5693 struct bfd_link_info *info)
5694 {
5695 struct elf_link_hash_entry *sh;
5696 size_t len1, len2, len3;
5697 char *name;
5698 const char *stub;
5699 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
5700
5701 if (bfd_link_pic (info))
5702 stub = ".plt_pic32.";
5703 else
5704 stub = ".plt_call32.";
5705
5706 len1 = strlen (h->root.root.string);
5707 len2 = strlen (stub);
5708 len3 = 0;
5709 if (ent->sec)
5710 len3 = strlen (ent->sec->name);
5711 name = bfd_malloc (len1 + len2 + len3 + 9);
5712 if (name == NULL)
5713 return FALSE;
5714 sprintf (name, "%08x", (unsigned) ent->addend & 0xffffffff);
5715 if (ent->sec)
5716 memcpy (name + 8, ent->sec->name, len3);
5717 memcpy (name + 8 + len3, stub, len2);
5718 memcpy (name + 8 + len3 + len2, h->root.root.string, len1 + 1);
5719 sh = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
5720 if (sh == NULL)
5721 return FALSE;
5722 if (sh->root.type == bfd_link_hash_new)
5723 {
5724 sh->root.type = bfd_link_hash_defined;
5725 sh->root.u.def.section = htab->glink;
5726 sh->root.u.def.value = ent->glink_offset;
5727 sh->ref_regular = 1;
5728 sh->def_regular = 1;
5729 sh->ref_regular_nonweak = 1;
5730 sh->forced_local = 1;
5731 sh->non_elf = 0;
5732 sh->root.linker_def = 1;
5733 }
5734 return TRUE;
5735 }
5736
5737 /* Allocate NEED contiguous space in .got, and return the offset.
5738 Handles allocation of the got header when crossing 32k. */
5739
5740 static bfd_vma
5741 allocate_got (struct ppc_elf_link_hash_table *htab, unsigned int need)
5742 {
5743 bfd_vma where;
5744 unsigned int max_before_header;
5745
5746 if (htab->plt_type == PLT_VXWORKS)
5747 {
5748 where = htab->elf.sgot->size;
5749 htab->elf.sgot->size += need;
5750 }
5751 else
5752 {
5753 max_before_header = htab->plt_type == PLT_NEW ? 32768 : 32764;
5754 if (need <= htab->got_gap)
5755 {
5756 where = max_before_header - htab->got_gap;
5757 htab->got_gap -= need;
5758 }
5759 else
5760 {
5761 if (htab->elf.sgot->size + need > max_before_header
5762 && htab->elf.sgot->size <= max_before_header)
5763 {
5764 htab->got_gap = max_before_header - htab->elf.sgot->size;
5765 htab->elf.sgot->size = max_before_header + htab->got_header_size;
5766 }
5767 where = htab->elf.sgot->size;
5768 htab->elf.sgot->size += need;
5769 }
5770 }
5771 return where;
5772 }
5773
5774 /* Calculate size of GOT entries for symbol given its TLS_MASK.
5775 TLS_LD is excluded because those go in a special GOT slot. */
5776
5777 static inline unsigned int
5778 got_entries_needed (int tls_mask)
5779 {
5780 unsigned int need;
5781 if ((tls_mask & TLS_TLS) == 0)
5782 need = 4;
5783 else
5784 {
5785 need = 0;
5786 if ((tls_mask & TLS_GD) != 0)
5787 need += 8;
5788 if ((tls_mask & (TLS_TPREL | TLS_TPRELGD)) != 0)
5789 need += 4;
5790 if ((tls_mask & TLS_DTPREL) != 0)
5791 need += 4;
5792 }
5793 return need;
5794 }
5795
5796 /* Calculate size of relocs needed for symbol given its TLS_MASK and
5797 NEEDed GOT entries. KNOWN says a TPREL offset can be calculated at
5798 link time. */
5799
5800 static inline unsigned int
5801 got_relocs_needed (int tls_mask, unsigned int need, bfd_boolean known)
5802 {
5803 /* All the entries we allocated need relocs.
5804 Except IE in executable with a local symbol. We could also omit
5805 the DTPREL reloc on the second word of a GD entry under the same
5806 condition as that for IE, but ld.so needs to differentiate
5807 LD and GD entries. */
5808 if ((tls_mask & (TLS_TPREL | TLS_TPRELGD)) != 0 && known)
5809 need -= 4;
5810 return need * sizeof (Elf32_External_Rela) / 4;
5811 }
5812
5813 /* If H is undefined, make it dynamic if that makes sense. */
5814
5815 static bfd_boolean
5816 ensure_undef_dynamic (struct bfd_link_info *info,
5817 struct elf_link_hash_entry *h)
5818 {
5819 struct elf_link_hash_table *htab = elf_hash_table (info);
5820
5821 if (htab->dynamic_sections_created
5822 && ((info->dynamic_undefined_weak != 0
5823 && h->root.type == bfd_link_hash_undefweak)
5824 || h->root.type == bfd_link_hash_undefined)
5825 && h->dynindx == -1
5826 && !h->forced_local
5827 && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
5828 return bfd_elf_link_record_dynamic_symbol (info, h);
5829 return TRUE;
5830 }
5831
5832 /* Allocate space in associated reloc sections for dynamic relocs. */
5833
5834 static bfd_boolean
5835 allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
5836 {
5837 struct bfd_link_info *info = inf;
5838 struct ppc_elf_link_hash_entry *eh;
5839 struct ppc_elf_link_hash_table *htab;
5840 struct elf_dyn_relocs *p;
5841 bfd_boolean dyn;
5842
5843 if (h->root.type == bfd_link_hash_indirect)
5844 return TRUE;
5845
5846 htab = ppc_elf_hash_table (info);
5847 eh = (struct ppc_elf_link_hash_entry *) h;
5848 if (eh->elf.got.refcount > 0
5849 || (ELIMINATE_COPY_RELOCS
5850 && !eh->elf.def_regular
5851 && eh->elf.protected_def
5852 && eh->has_addr16_ha
5853 && eh->has_addr16_lo
5854 && htab->params->pic_fixup > 0))
5855 {
5856 unsigned int need;
5857
5858 /* Make sure this symbol is output as a dynamic symbol. */
5859 if (!ensure_undef_dynamic (info, &eh->elf))
5860 return FALSE;
5861
5862 need = 0;
5863 if ((eh->tls_mask & TLS_LD) != 0)
5864 {
5865 if (!eh->elf.def_dynamic)
5866 /* We'll just use htab->tlsld_got.offset. This should
5867 always be the case. It's a little odd if we have
5868 a local dynamic reloc against a non-local symbol. */
5869 htab->tlsld_got.refcount += 1;
5870 else
5871 need += 8;
5872 }
5873 need += got_entries_needed (eh->tls_mask);
5874 if (need == 0)
5875 eh->elf.got.offset = (bfd_vma) -1;
5876 else
5877 {
5878 eh->elf.got.offset = allocate_got (htab, need);
5879 if ((bfd_link_pic (info)
5880 || (htab->elf.dynamic_sections_created
5881 && eh->elf.dynindx != -1
5882 && !SYMBOL_REFERENCES_LOCAL (info, &eh->elf)))
5883 && !UNDEFWEAK_NO_DYNAMIC_RELOC (info, &eh->elf))
5884 {
5885 asection *rsec;
5886 bfd_boolean tprel_known = (bfd_link_executable (info)
5887 && SYMBOL_REFERENCES_LOCAL (info,
5888 &eh->elf));
5889
5890 need = got_relocs_needed (eh->tls_mask, need, tprel_known);
5891 if ((eh->tls_mask & TLS_LD) != 0 && eh->elf.def_dynamic)
5892 need -= sizeof (Elf32_External_Rela);
5893 rsec = htab->elf.srelgot;
5894 if (eh->elf.type == STT_GNU_IFUNC)
5895 rsec = htab->elf.irelplt;
5896 rsec->size += need;
5897 }
5898 }
5899 }
5900 else
5901 eh->elf.got.offset = (bfd_vma) -1;
5902
5903 /* If no dynamic sections we can't have dynamic relocs, except for
5904 IFUNCs which are handled even in static executables. */
5905 if (!htab->elf.dynamic_sections_created
5906 && h->type != STT_GNU_IFUNC)
5907 eh->dyn_relocs = NULL;
5908
5909 /* Discard relocs on undefined symbols that must be local. */
5910 else if (h->root.type == bfd_link_hash_undefined
5911 && ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
5912 eh->dyn_relocs = NULL;
5913
5914 /* Also discard relocs on undefined weak syms with non-default
5915 visibility, or when dynamic_undefined_weak says so. */
5916 else if (UNDEFWEAK_NO_DYNAMIC_RELOC (info, h))
5917 eh->dyn_relocs = NULL;
5918
5919 if (eh->dyn_relocs == NULL)
5920 ;
5921
5922 /* In the shared -Bsymbolic case, discard space allocated for
5923 dynamic pc-relative relocs against symbols which turn out to be
5924 defined in regular objects. For the normal shared case, discard
5925 space for relocs that have become local due to symbol visibility
5926 changes. */
5927 else if (bfd_link_pic (info))
5928 {
5929 /* Relocs that use pc_count are those that appear on a call insn,
5930 or certain REL relocs (see must_be_dyn_reloc) that can be
5931 generated via assembly. We want calls to protected symbols to
5932 resolve directly to the function rather than going via the plt.
5933 If people want function pointer comparisons to work as expected
5934 then they should avoid writing weird assembly. */
5935 if (SYMBOL_CALLS_LOCAL (info, h))
5936 {
5937 struct elf_dyn_relocs **pp;
5938
5939 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
5940 {
5941 p->count -= p->pc_count;
5942 p->pc_count = 0;
5943 if (p->count == 0)
5944 *pp = p->next;
5945 else
5946 pp = &p->next;
5947 }
5948 }
5949
5950 if (htab->is_vxworks)
5951 {
5952 struct elf_dyn_relocs **pp;
5953
5954 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
5955 {
5956 if (strcmp (p->sec->output_section->name, ".tls_vars") == 0)
5957 *pp = p->next;
5958 else
5959 pp = &p->next;
5960 }
5961 }
5962
5963 if (eh->dyn_relocs != NULL)
5964 {
5965 /* Make sure this symbol is output as a dynamic symbol. */
5966 if (!ensure_undef_dynamic (info, h))
5967 return FALSE;
5968 }
5969 }
5970 else if (ELIMINATE_COPY_RELOCS)
5971 {
5972 /* For the non-pic case, discard space for relocs against
5973 symbols which turn out to need copy relocs or are not
5974 dynamic. */
5975 if (h->dynamic_adjusted
5976 && !h->def_regular
5977 && !ELF_COMMON_DEF_P (h)
5978 && !(h->protected_def
5979 && eh->has_addr16_ha
5980 && eh->has_addr16_lo
5981 && htab->params->pic_fixup > 0))
5982 {
5983 /* Make sure this symbol is output as a dynamic symbol. */
5984 if (!ensure_undef_dynamic (info, h))
5985 return FALSE;
5986
5987 if (h->dynindx == -1)
5988 eh->dyn_relocs = NULL;
5989 }
5990 else
5991 eh->dyn_relocs = NULL;
5992 }
5993
5994 /* Allocate space. */
5995 for (p = eh->dyn_relocs; p != NULL; p = p->next)
5996 {
5997 asection *sreloc = elf_section_data (p->sec)->sreloc;
5998 if (eh->elf.type == STT_GNU_IFUNC)
5999 sreloc = htab->elf.irelplt;
6000 sreloc->size += p->count * sizeof (Elf32_External_Rela);
6001 }
6002
6003 /* Handle PLT relocs. Done last, after dynindx has settled. */
6004 dyn = htab->elf.dynamic_sections_created && h->dynindx != -1;
6005 if (dyn || h->type == STT_GNU_IFUNC)
6006 {
6007 struct plt_entry *ent;
6008 bfd_boolean doneone = FALSE;
6009 bfd_vma plt_offset = 0, glink_offset = 0;
6010
6011 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
6012 if (ent->plt.refcount > 0)
6013 {
6014 asection *s = htab->elf.splt;
6015
6016 if (!dyn)
6017 s = htab->elf.iplt;
6018
6019 if (htab->plt_type == PLT_NEW || !dyn)
6020 {
6021 if (!doneone)
6022 {
6023 plt_offset = s->size;
6024 s->size += 4;
6025 }
6026 ent->plt.offset = plt_offset;
6027
6028 s = htab->glink;
6029 if (!doneone || bfd_link_pic (info))
6030 {
6031 glink_offset = s->size;
6032 s->size += GLINK_ENTRY_SIZE (htab, h);
6033 }
6034 if (!doneone
6035 && !bfd_link_pic (info)
6036 && h->def_dynamic
6037 && !h->def_regular)
6038 {
6039 h->root.u.def.section = s;
6040 h->root.u.def.value = glink_offset;
6041 }
6042 ent->glink_offset = glink_offset;
6043
6044 if (htab->params->emit_stub_syms
6045 && !add_stub_sym (ent, h, info))
6046 return FALSE;
6047 }
6048 else
6049 {
6050 if (!doneone)
6051 {
6052 /* If this is the first .plt entry, make room
6053 for the special first entry. */
6054 if (s->size == 0)
6055 s->size += htab->plt_initial_entry_size;
6056
6057 /* The PowerPC PLT is actually composed of two
6058 parts, the first part is 2 words (for a load
6059 and a jump), and then there is a remaining
6060 word available at the end. */
6061 plt_offset = (htab->plt_initial_entry_size
6062 + (htab->plt_slot_size
6063 * ((s->size
6064 - htab->plt_initial_entry_size)
6065 / htab->plt_entry_size)));
6066
6067 /* If this symbol is not defined in a regular
6068 file, and we are not generating a shared
6069 library, then set the symbol to this location
6070 in the .plt. This is to avoid text
6071 relocations, and is required to make
6072 function pointers compare as equal between
6073 the normal executable and the shared library. */
6074 if (! bfd_link_pic (info)
6075 && h->def_dynamic
6076 && !h->def_regular)
6077 {
6078 h->root.u.def.section = s;
6079 h->root.u.def.value = plt_offset;
6080 }
6081
6082 /* Make room for this entry. */
6083 s->size += htab->plt_entry_size;
6084 /* After the 8192nd entry, room for two entries
6085 is allocated. */
6086 if (htab->plt_type == PLT_OLD
6087 && (s->size - htab->plt_initial_entry_size)
6088 / htab->plt_entry_size
6089 > PLT_NUM_SINGLE_ENTRIES)
6090 s->size += htab->plt_entry_size;
6091 }
6092 ent->plt.offset = plt_offset;
6093 }
6094
6095 /* We also need to make an entry in the .rela.plt section. */
6096 if (!doneone)
6097 {
6098 if (!dyn)
6099 htab->elf.irelplt->size += sizeof (Elf32_External_Rela);
6100 else
6101 {
6102 htab->elf.srelplt->size += sizeof (Elf32_External_Rela);
6103
6104 if (htab->plt_type == PLT_VXWORKS)
6105 {
6106 /* Allocate space for the unloaded relocations. */
6107 if (!bfd_link_pic (info)
6108 && htab->elf.dynamic_sections_created)
6109 {
6110 if (ent->plt.offset
6111 == (bfd_vma) htab->plt_initial_entry_size)
6112 {
6113 htab->srelplt2->size
6114 += (sizeof (Elf32_External_Rela)
6115 * VXWORKS_PLTRESOLVE_RELOCS);
6116 }
6117
6118 htab->srelplt2->size
6119 += (sizeof (Elf32_External_Rela)
6120 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS);
6121 }
6122
6123 /* Every PLT entry has an associated GOT entry in
6124 .got.plt. */
6125 htab->elf.sgotplt->size += 4;
6126 }
6127 }
6128 doneone = TRUE;
6129 }
6130 }
6131 else
6132 ent->plt.offset = (bfd_vma) -1;
6133
6134 if (!doneone)
6135 {
6136 h->plt.plist = NULL;
6137 h->needs_plt = 0;
6138 }
6139 }
6140 else
6141 {
6142 h->plt.plist = NULL;
6143 h->needs_plt = 0;
6144 }
6145
6146 return TRUE;
6147 }
6148
6149 /* Set DF_TEXTREL if we find any dynamic relocs that apply to
6150 read-only sections. */
6151
6152 static bfd_boolean
6153 maybe_set_textrel (struct elf_link_hash_entry *h, void *info_p)
6154 {
6155 asection *sec;
6156
6157 if (h->root.type == bfd_link_hash_indirect)
6158 return TRUE;
6159
6160 sec = readonly_dynrelocs (h);
6161 if (sec != NULL)
6162 {
6163 struct bfd_link_info *info = (struct bfd_link_info *) info_p;
6164
6165 info->flags |= DF_TEXTREL;
6166 info->callbacks->minfo
6167 (_("%B: dynamic relocation against `%T' in read-only section `%A'\n"),
6168 sec->owner, h->root.root.string, sec);
6169
6170 /* Not an error, just cut short the traversal. */
6171 return FALSE;
6172 }
6173 return TRUE;
6174 }
6175
6176 static const unsigned char glink_eh_frame_cie[] =
6177 {
6178 0, 0, 0, 16, /* length. */
6179 0, 0, 0, 0, /* id. */
6180 1, /* CIE version. */
6181 'z', 'R', 0, /* Augmentation string. */
6182 4, /* Code alignment. */
6183 0x7c, /* Data alignment. */
6184 65, /* RA reg. */
6185 1, /* Augmentation size. */
6186 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding. */
6187 DW_CFA_def_cfa, 1, 0 /* def_cfa: r1 offset 0. */
6188 };
6189
6190 /* Set the sizes of the dynamic sections. */
6191
6192 static bfd_boolean
6193 ppc_elf_size_dynamic_sections (bfd *output_bfd,
6194 struct bfd_link_info *info)
6195 {
6196 struct ppc_elf_link_hash_table *htab;
6197 asection *s;
6198 bfd_boolean relocs;
6199 bfd *ibfd;
6200
6201 #ifdef DEBUG
6202 fprintf (stderr, "ppc_elf_size_dynamic_sections called\n");
6203 #endif
6204
6205 htab = ppc_elf_hash_table (info);
6206 BFD_ASSERT (htab->elf.dynobj != NULL);
6207
6208 if (elf_hash_table (info)->dynamic_sections_created)
6209 {
6210 /* Set the contents of the .interp section to the interpreter. */
6211 if (bfd_link_executable (info) && !info->nointerp)
6212 {
6213 s = bfd_get_linker_section (htab->elf.dynobj, ".interp");
6214 BFD_ASSERT (s != NULL);
6215 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
6216 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
6217 }
6218 }
6219
6220 if (htab->plt_type == PLT_OLD)
6221 htab->got_header_size = 16;
6222 else if (htab->plt_type == PLT_NEW)
6223 htab->got_header_size = 12;
6224
6225 /* Set up .got offsets for local syms, and space for local dynamic
6226 relocs. */
6227 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
6228 {
6229 bfd_signed_vma *local_got;
6230 bfd_signed_vma *end_local_got;
6231 struct plt_entry **local_plt;
6232 struct plt_entry **end_local_plt;
6233 char *lgot_masks;
6234 bfd_size_type locsymcount;
6235 Elf_Internal_Shdr *symtab_hdr;
6236
6237 if (!is_ppc_elf (ibfd))
6238 continue;
6239
6240 for (s = ibfd->sections; s != NULL; s = s->next)
6241 {
6242 struct ppc_dyn_relocs *p;
6243
6244 for (p = ((struct ppc_dyn_relocs *)
6245 elf_section_data (s)->local_dynrel);
6246 p != NULL;
6247 p = p->next)
6248 {
6249 if (!bfd_is_abs_section (p->sec)
6250 && bfd_is_abs_section (p->sec->output_section))
6251 {
6252 /* Input section has been discarded, either because
6253 it is a copy of a linkonce section or due to
6254 linker script /DISCARD/, so we'll be discarding
6255 the relocs too. */
6256 }
6257 else if (htab->is_vxworks
6258 && strcmp (p->sec->output_section->name,
6259 ".tls_vars") == 0)
6260 {
6261 /* Relocations in vxworks .tls_vars sections are
6262 handled specially by the loader. */
6263 }
6264 else if (p->count != 0)
6265 {
6266 asection *sreloc = elf_section_data (p->sec)->sreloc;
6267 if (p->ifunc)
6268 sreloc = htab->elf.irelplt;
6269 sreloc->size += p->count * sizeof (Elf32_External_Rela);
6270 if ((p->sec->output_section->flags
6271 & (SEC_READONLY | SEC_ALLOC))
6272 == (SEC_READONLY | SEC_ALLOC))
6273 {
6274 info->flags |= DF_TEXTREL;
6275 info->callbacks->minfo (_("%B: dynamic relocation in read-only section `%A'\n"),
6276 p->sec->owner, p->sec);
6277 }
6278 }
6279 }
6280 }
6281
6282 local_got = elf_local_got_refcounts (ibfd);
6283 if (!local_got)
6284 continue;
6285
6286 symtab_hdr = &elf_symtab_hdr (ibfd);
6287 locsymcount = symtab_hdr->sh_info;
6288 end_local_got = local_got + locsymcount;
6289 local_plt = (struct plt_entry **) end_local_got;
6290 end_local_plt = local_plt + locsymcount;
6291 lgot_masks = (char *) end_local_plt;
6292
6293 for (; local_got < end_local_got; ++local_got, ++lgot_masks)
6294 if (*local_got > 0)
6295 {
6296 unsigned int need;
6297 if ((*lgot_masks & TLS_LD) != 0)
6298 htab->tlsld_got.refcount += 1;
6299 need = got_entries_needed (*lgot_masks);
6300 if (need == 0)
6301 *local_got = (bfd_vma) -1;
6302 else
6303 {
6304 *local_got = allocate_got (htab, need);
6305 if (bfd_link_pic (info))
6306 {
6307 asection *srel;
6308 bfd_boolean tprel_known = bfd_link_executable (info);
6309
6310 need = got_relocs_needed (*lgot_masks, need, tprel_known);
6311 srel = htab->elf.srelgot;
6312 if ((*lgot_masks & PLT_IFUNC) != 0)
6313 srel = htab->elf.irelplt;
6314 srel->size += need;
6315 }
6316 }
6317 }
6318 else
6319 *local_got = (bfd_vma) -1;
6320
6321 if (htab->is_vxworks)
6322 continue;
6323
6324 /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */
6325 for (; local_plt < end_local_plt; ++local_plt)
6326 {
6327 struct plt_entry *ent;
6328 bfd_boolean doneone = FALSE;
6329 bfd_vma plt_offset = 0, glink_offset = 0;
6330
6331 for (ent = *local_plt; ent != NULL; ent = ent->next)
6332 if (ent->plt.refcount > 0)
6333 {
6334 s = htab->elf.iplt;
6335
6336 if (!doneone)
6337 {
6338 plt_offset = s->size;
6339 s->size += 4;
6340 }
6341 ent->plt.offset = plt_offset;
6342
6343 s = htab->glink;
6344 if (!doneone || bfd_link_pic (info))
6345 {
6346 glink_offset = s->size;
6347 s->size += GLINK_ENTRY_SIZE (htab, NULL);
6348 }
6349 ent->glink_offset = glink_offset;
6350
6351 if (!doneone)
6352 {
6353 htab->elf.irelplt->size += sizeof (Elf32_External_Rela);
6354 doneone = TRUE;
6355 }
6356 }
6357 else
6358 ent->plt.offset = (bfd_vma) -1;
6359 }
6360 }
6361
6362 /* Allocate space for global sym dynamic relocs. */
6363 elf_link_hash_traverse (elf_hash_table (info), allocate_dynrelocs, info);
6364
6365 if (htab->tlsld_got.refcount > 0)
6366 {
6367 htab->tlsld_got.offset = allocate_got (htab, 8);
6368 if (bfd_link_pic (info))
6369 htab->elf.srelgot->size += sizeof (Elf32_External_Rela);
6370 }
6371 else
6372 htab->tlsld_got.offset = (bfd_vma) -1;
6373
6374 if (htab->elf.sgot != NULL && htab->plt_type != PLT_VXWORKS)
6375 {
6376 unsigned int g_o_t = 32768;
6377
6378 /* If we haven't allocated the header, do so now. When we get here,
6379 for old plt/got the got size will be 0 to 32764 (not allocated),
6380 or 32780 to 65536 (header allocated). For new plt/got, the
6381 corresponding ranges are 0 to 32768 and 32780 to 65536. */
6382 if (htab->elf.sgot->size <= 32768)
6383 {
6384 g_o_t = htab->elf.sgot->size;
6385 if (htab->plt_type == PLT_OLD)
6386 g_o_t += 4;
6387 htab->elf.sgot->size += htab->got_header_size;
6388 }
6389
6390 htab->elf.hgot->root.u.def.value = g_o_t;
6391 }
6392 if (bfd_link_pic (info))
6393 {
6394 struct elf_link_hash_entry *sda = htab->sdata[0].sym;
6395
6396 sda->root.u.def.section = htab->elf.hgot->root.u.def.section;
6397 sda->root.u.def.value = htab->elf.hgot->root.u.def.value;
6398 }
6399 if (info->emitrelocations)
6400 {
6401 struct elf_link_hash_entry *sda = htab->sdata[0].sym;
6402
6403 if (sda != NULL && sda->ref_regular)
6404 sda->root.u.def.section->flags |= SEC_KEEP;
6405 sda = htab->sdata[1].sym;
6406 if (sda != NULL && sda->ref_regular)
6407 sda->root.u.def.section->flags |= SEC_KEEP;
6408 }
6409
6410 if (htab->glink != NULL
6411 && htab->glink->size != 0
6412 && htab->elf.dynamic_sections_created)
6413 {
6414 htab->glink_pltresolve = htab->glink->size;
6415 /* Space for the branch table. */
6416 htab->glink->size
6417 += htab->elf.srelplt->size / (sizeof (Elf32_External_Rela) / 4) - 4;
6418 /* Pad out to align the start of PLTresolve. */
6419 htab->glink->size += -htab->glink->size & (htab->params->ppc476_workaround
6420 ? 63 : 15);
6421 htab->glink->size += GLINK_PLTRESOLVE;
6422
6423 if (htab->params->emit_stub_syms)
6424 {
6425 struct elf_link_hash_entry *sh;
6426 sh = elf_link_hash_lookup (&htab->elf, "__glink",
6427 TRUE, FALSE, FALSE);
6428 if (sh == NULL)
6429 return FALSE;
6430 if (sh->root.type == bfd_link_hash_new)
6431 {
6432 sh->root.type = bfd_link_hash_defined;
6433 sh->root.u.def.section = htab->glink;
6434 sh->root.u.def.value = htab->glink_pltresolve;
6435 sh->ref_regular = 1;
6436 sh->def_regular = 1;
6437 sh->ref_regular_nonweak = 1;
6438 sh->forced_local = 1;
6439 sh->non_elf = 0;
6440 sh->root.linker_def = 1;
6441 }
6442 sh = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve",
6443 TRUE, FALSE, FALSE);
6444 if (sh == NULL)
6445 return FALSE;
6446 if (sh->root.type == bfd_link_hash_new)
6447 {
6448 sh->root.type = bfd_link_hash_defined;
6449 sh->root.u.def.section = htab->glink;
6450 sh->root.u.def.value = htab->glink->size - GLINK_PLTRESOLVE;
6451 sh->ref_regular = 1;
6452 sh->def_regular = 1;
6453 sh->ref_regular_nonweak = 1;
6454 sh->forced_local = 1;
6455 sh->non_elf = 0;
6456 sh->root.linker_def = 1;
6457 }
6458 }
6459 }
6460
6461 if (htab->glink != NULL
6462 && htab->glink->size != 0
6463 && htab->glink_eh_frame != NULL
6464 && !bfd_is_abs_section (htab->glink_eh_frame->output_section)
6465 && _bfd_elf_eh_frame_present (info))
6466 {
6467 s = htab->glink_eh_frame;
6468 s->size = sizeof (glink_eh_frame_cie) + 20;
6469 if (bfd_link_pic (info))
6470 {
6471 s->size += 4;
6472 if (htab->glink->size - GLINK_PLTRESOLVE + 8 >= 256)
6473 s->size += 4;
6474 }
6475 }
6476
6477 /* We've now determined the sizes of the various dynamic sections.
6478 Allocate memory for them. */
6479 relocs = FALSE;
6480 for (s = htab->elf.dynobj->sections; s != NULL; s = s->next)
6481 {
6482 bfd_boolean strip_section = TRUE;
6483
6484 if ((s->flags & SEC_LINKER_CREATED) == 0)
6485 continue;
6486
6487 if (s == htab->elf.splt
6488 || s == htab->elf.sgot)
6489 {
6490 /* We'd like to strip these sections if they aren't needed, but if
6491 we've exported dynamic symbols from them we must leave them.
6492 It's too late to tell BFD to get rid of the symbols. */
6493 if (htab->elf.hplt != NULL)
6494 strip_section = FALSE;
6495 /* Strip this section if we don't need it; see the
6496 comment below. */
6497 }
6498 else if (s == htab->elf.iplt
6499 || s == htab->glink
6500 || s == htab->glink_eh_frame
6501 || s == htab->elf.sgotplt
6502 || s == htab->sbss
6503 || s == htab->elf.sdynbss
6504 || s == htab->elf.sdynrelro
6505 || s == htab->dynsbss)
6506 {
6507 /* Strip these too. */
6508 }
6509 else if (s == htab->sdata[0].section
6510 || s == htab->sdata[1].section)
6511 {
6512 strip_section = (s->flags & SEC_KEEP) == 0;
6513 }
6514 else if (CONST_STRNEQ (bfd_get_section_name (htab->elf.dynobj, s),
6515 ".rela"))
6516 {
6517 if (s->size != 0)
6518 {
6519 /* Remember whether there are any relocation sections. */
6520 relocs = TRUE;
6521
6522 /* We use the reloc_count field as a counter if we need
6523 to copy relocs into the output file. */
6524 s->reloc_count = 0;
6525 }
6526 }
6527 else
6528 {
6529 /* It's not one of our sections, so don't allocate space. */
6530 continue;
6531 }
6532
6533 if (s->size == 0 && strip_section)
6534 {
6535 /* If we don't need this section, strip it from the
6536 output file. This is mostly to handle .rela.bss and
6537 .rela.plt. We must create both sections in
6538 create_dynamic_sections, because they must be created
6539 before the linker maps input sections to output
6540 sections. The linker does that before
6541 adjust_dynamic_symbol is called, and it is that
6542 function which decides whether anything needs to go
6543 into these sections. */
6544 s->flags |= SEC_EXCLUDE;
6545 continue;
6546 }
6547
6548 if ((s->flags & SEC_HAS_CONTENTS) == 0)
6549 continue;
6550
6551 /* Allocate memory for the section contents. */
6552 s->contents = bfd_zalloc (htab->elf.dynobj, s->size);
6553 if (s->contents == NULL)
6554 return FALSE;
6555 }
6556
6557 if (htab->elf.dynamic_sections_created)
6558 {
6559 /* Add some entries to the .dynamic section. We fill in the
6560 values later, in ppc_elf_finish_dynamic_sections, but we
6561 must add the entries now so that we get the correct size for
6562 the .dynamic section. The DT_DEBUG entry is filled in by the
6563 dynamic linker and used by the debugger. */
6564 #define add_dynamic_entry(TAG, VAL) \
6565 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
6566
6567 if (bfd_link_executable (info))
6568 {
6569 if (!add_dynamic_entry (DT_DEBUG, 0))
6570 return FALSE;
6571 }
6572
6573 if (htab->elf.splt != NULL && htab->elf.splt->size != 0)
6574 {
6575 if (!add_dynamic_entry (DT_PLTGOT, 0)
6576 || !add_dynamic_entry (DT_PLTRELSZ, 0)
6577 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
6578 || !add_dynamic_entry (DT_JMPREL, 0))
6579 return FALSE;
6580 }
6581
6582 if (htab->plt_type == PLT_NEW
6583 && htab->glink != NULL
6584 && htab->glink->size != 0)
6585 {
6586 if (!add_dynamic_entry (DT_PPC_GOT, 0))
6587 return FALSE;
6588 if (!htab->params->no_tls_get_addr_opt
6589 && htab->tls_get_addr != NULL
6590 && htab->tls_get_addr->plt.plist != NULL
6591 && !add_dynamic_entry (DT_PPC_OPT, PPC_OPT_TLS))
6592 return FALSE;
6593 }
6594
6595 if (relocs)
6596 {
6597 if (!add_dynamic_entry (DT_RELA, 0)
6598 || !add_dynamic_entry (DT_RELASZ, 0)
6599 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
6600 return FALSE;
6601 }
6602
6603 /* If any dynamic relocs apply to a read-only section, then we
6604 need a DT_TEXTREL entry. */
6605 if ((info->flags & DF_TEXTREL) == 0)
6606 elf_link_hash_traverse (elf_hash_table (info), maybe_set_textrel,
6607 info);
6608
6609 if ((info->flags & DF_TEXTREL) != 0)
6610 {
6611 if (!add_dynamic_entry (DT_TEXTREL, 0))
6612 return FALSE;
6613 }
6614 if (htab->is_vxworks
6615 && !elf_vxworks_add_dynamic_entries (output_bfd, info))
6616 return FALSE;
6617 }
6618 #undef add_dynamic_entry
6619
6620 if (htab->glink_eh_frame != NULL
6621 && htab->glink_eh_frame->contents != NULL)
6622 {
6623 unsigned char *p = htab->glink_eh_frame->contents;
6624 bfd_vma val;
6625
6626 memcpy (p, glink_eh_frame_cie, sizeof (glink_eh_frame_cie));
6627 /* CIE length (rewrite in case little-endian). */
6628 bfd_put_32 (htab->elf.dynobj, sizeof (glink_eh_frame_cie) - 4, p);
6629 p += sizeof (glink_eh_frame_cie);
6630 /* FDE length. */
6631 val = htab->glink_eh_frame->size - 4 - sizeof (glink_eh_frame_cie);
6632 bfd_put_32 (htab->elf.dynobj, val, p);
6633 p += 4;
6634 /* CIE pointer. */
6635 val = p - htab->glink_eh_frame->contents;
6636 bfd_put_32 (htab->elf.dynobj, val, p);
6637 p += 4;
6638 /* Offset to .glink. Set later. */
6639 p += 4;
6640 /* .glink size. */
6641 bfd_put_32 (htab->elf.dynobj, htab->glink->size, p);
6642 p += 4;
6643 /* Augmentation. */
6644 p += 1;
6645
6646 if (bfd_link_pic (info)
6647 && htab->elf.dynamic_sections_created)
6648 {
6649 bfd_vma adv = (htab->glink->size - GLINK_PLTRESOLVE + 8) >> 2;
6650 if (adv < 64)
6651 *p++ = DW_CFA_advance_loc + adv;
6652 else if (adv < 256)
6653 {
6654 *p++ = DW_CFA_advance_loc1;
6655 *p++ = adv;
6656 }
6657 else if (adv < 65536)
6658 {
6659 *p++ = DW_CFA_advance_loc2;
6660 bfd_put_16 (htab->elf.dynobj, adv, p);
6661 p += 2;
6662 }
6663 else
6664 {
6665 *p++ = DW_CFA_advance_loc4;
6666 bfd_put_32 (htab->elf.dynobj, adv, p);
6667 p += 4;
6668 }
6669 *p++ = DW_CFA_register;
6670 *p++ = 65;
6671 p++;
6672 *p++ = DW_CFA_advance_loc + 4;
6673 *p++ = DW_CFA_restore_extended;
6674 *p++ = 65;
6675 }
6676 BFD_ASSERT ((bfd_vma) ((p + 3 - htab->glink_eh_frame->contents) & -4)
6677 == htab->glink_eh_frame->size);
6678 }
6679
6680 return TRUE;
6681 }
6682
6683 /* Arrange to have _SDA_BASE_ or _SDA2_BASE_ stripped from the output
6684 if it looks like nothing is using them. */
6685
6686 static void
6687 maybe_strip_sdasym (bfd *output_bfd, elf_linker_section_t *lsect)
6688 {
6689 struct elf_link_hash_entry *sda = lsect->sym;
6690
6691 if (sda != NULL && !sda->ref_regular && sda->dynindx == -1)
6692 {
6693 asection *s;
6694
6695 s = bfd_get_section_by_name (output_bfd, lsect->name);
6696 if (s == NULL || bfd_section_removed_from_list (output_bfd, s))
6697 {
6698 s = bfd_get_section_by_name (output_bfd, lsect->bss_name);
6699 if (s == NULL || bfd_section_removed_from_list (output_bfd, s))
6700 {
6701 sda->def_regular = 0;
6702 /* This is somewhat magic. See elf_link_output_extsym. */
6703 sda->ref_dynamic = 1;
6704 sda->forced_local = 0;
6705 }
6706 }
6707 }
6708 }
6709
6710 void
6711 ppc_elf_maybe_strip_sdata_syms (struct bfd_link_info *info)
6712 {
6713 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
6714
6715 if (htab != NULL)
6716 {
6717 maybe_strip_sdasym (info->output_bfd, &htab->sdata[0]);
6718 maybe_strip_sdasym (info->output_bfd, &htab->sdata[1]);
6719 }
6720 }
6721
6722
6723 /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
6724
6725 static bfd_boolean
6726 ppc_elf_hash_symbol (struct elf_link_hash_entry *h)
6727 {
6728 if (h->plt.plist != NULL
6729 && !h->def_regular
6730 && (!h->pointer_equality_needed
6731 || !h->ref_regular_nonweak))
6732 return FALSE;
6733
6734 return _bfd_elf_hash_symbol (h);
6735 }
6736 \f
6737 #define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0]))
6738
6739 /* Relaxation trampolines. r12 is available for clobbering (r11, is
6740 used for some functions that are allowed to break the ABI). */
6741 static const int shared_stub_entry[] =
6742 {
6743 0x7c0802a6, /* mflr 0 */
6744 0x429f0005, /* bcl 20, 31, .Lxxx */
6745 0x7d8802a6, /* mflr 12 */
6746 0x3d8c0000, /* addis 12, 12, (xxx-.Lxxx)@ha */
6747 0x398c0000, /* addi 12, 12, (xxx-.Lxxx)@l */
6748 0x7c0803a6, /* mtlr 0 */
6749 0x7d8903a6, /* mtctr 12 */
6750 0x4e800420, /* bctr */
6751 };
6752
6753 static const int stub_entry[] =
6754 {
6755 0x3d800000, /* lis 12,xxx@ha */
6756 0x398c0000, /* addi 12,12,xxx@l */
6757 0x7d8903a6, /* mtctr 12 */
6758 0x4e800420, /* bctr */
6759 };
6760
6761 struct ppc_elf_relax_info
6762 {
6763 unsigned int workaround_size;
6764 unsigned int picfixup_size;
6765 };
6766
6767 /* This function implements long branch trampolines, and the ppc476
6768 icache bug workaround. Any section needing trampolines or patch
6769 space for the workaround has its size extended so that we can
6770 add trampolines at the end of the section. */
6771
6772 static bfd_boolean
6773 ppc_elf_relax_section (bfd *abfd,
6774 asection *isec,
6775 struct bfd_link_info *link_info,
6776 bfd_boolean *again)
6777 {
6778 struct one_branch_fixup
6779 {
6780 struct one_branch_fixup *next;
6781 asection *tsec;
6782 /* Final link, can use the symbol offset. For a
6783 relocatable link we use the symbol's index. */
6784 bfd_vma toff;
6785 bfd_vma trampoff;
6786 };
6787
6788 Elf_Internal_Shdr *symtab_hdr;
6789 bfd_byte *contents = NULL;
6790 Elf_Internal_Sym *isymbuf = NULL;
6791 Elf_Internal_Rela *internal_relocs = NULL;
6792 Elf_Internal_Rela *irel, *irelend = NULL;
6793 struct one_branch_fixup *branch_fixups = NULL;
6794 struct ppc_elf_relax_info *relax_info = NULL;
6795 unsigned changes = 0;
6796 bfd_boolean workaround_change;
6797 struct ppc_elf_link_hash_table *htab;
6798 bfd_size_type trampbase, trampoff, newsize, picfixup_size;
6799 asection *got2;
6800 bfd_boolean maybe_pasted;
6801
6802 *again = FALSE;
6803
6804 /* No need to do anything with non-alloc or non-code sections. */
6805 if ((isec->flags & SEC_ALLOC) == 0
6806 || (isec->flags & SEC_CODE) == 0
6807 || (isec->flags & SEC_LINKER_CREATED) != 0
6808 || isec->size < 4)
6809 return TRUE;
6810
6811 /* We cannot represent the required PIC relocs in the output, so don't
6812 do anything. The linker doesn't support mixing -shared and -r
6813 anyway. */
6814 if (bfd_link_relocatable (link_info) && bfd_link_pic (link_info))
6815 return TRUE;
6816
6817 htab = ppc_elf_hash_table (link_info);
6818 if (htab == NULL)
6819 return TRUE;
6820
6821 isec->size = (isec->size + 3) & -4;
6822 if (isec->rawsize == 0)
6823 isec->rawsize = isec->size;
6824 trampbase = isec->size;
6825
6826 BFD_ASSERT (isec->sec_info_type == SEC_INFO_TYPE_NONE
6827 || isec->sec_info_type == SEC_INFO_TYPE_TARGET);
6828 isec->sec_info_type = SEC_INFO_TYPE_TARGET;
6829
6830 if (htab->params->ppc476_workaround
6831 || htab->params->pic_fixup > 0)
6832 {
6833 if (elf_section_data (isec)->sec_info == NULL)
6834 {
6835 elf_section_data (isec)->sec_info
6836 = bfd_zalloc (abfd, sizeof (struct ppc_elf_relax_info));
6837 if (elf_section_data (isec)->sec_info == NULL)
6838 return FALSE;
6839 }
6840 relax_info = elf_section_data (isec)->sec_info;
6841 trampbase -= relax_info->workaround_size;
6842 }
6843
6844 maybe_pasted = (strcmp (isec->output_section->name, ".init") == 0
6845 || strcmp (isec->output_section->name, ".fini") == 0);
6846 /* Space for a branch around any trampolines. */
6847 trampoff = trampbase;
6848 if (maybe_pasted && trampbase == isec->rawsize)
6849 trampoff += 4;
6850
6851 symtab_hdr = &elf_symtab_hdr (abfd);
6852 picfixup_size = 0;
6853 if (htab->params->branch_trampolines
6854 || htab->params->pic_fixup > 0)
6855 {
6856 /* Get a copy of the native relocations. */
6857 if (isec->reloc_count != 0)
6858 {
6859 internal_relocs = _bfd_elf_link_read_relocs (abfd, isec, NULL, NULL,
6860 link_info->keep_memory);
6861 if (internal_relocs == NULL)
6862 goto error_return;
6863 }
6864
6865 got2 = bfd_get_section_by_name (abfd, ".got2");
6866
6867 irelend = internal_relocs + isec->reloc_count;
6868 for (irel = internal_relocs; irel < irelend; irel++)
6869 {
6870 unsigned long r_type = ELF32_R_TYPE (irel->r_info);
6871 bfd_vma toff, roff;
6872 asection *tsec;
6873 struct one_branch_fixup *f;
6874 size_t insn_offset = 0;
6875 bfd_vma max_branch_offset = 0, val;
6876 bfd_byte *hit_addr;
6877 unsigned long t0;
6878 struct elf_link_hash_entry *h;
6879 struct plt_entry **plist;
6880 unsigned char sym_type;
6881
6882 switch (r_type)
6883 {
6884 case R_PPC_REL24:
6885 case R_PPC_LOCAL24PC:
6886 case R_PPC_PLTREL24:
6887 max_branch_offset = 1 << 25;
6888 break;
6889
6890 case R_PPC_REL14:
6891 case R_PPC_REL14_BRTAKEN:
6892 case R_PPC_REL14_BRNTAKEN:
6893 max_branch_offset = 1 << 15;
6894 break;
6895
6896 case R_PPC_ADDR16_HA:
6897 if (htab->params->pic_fixup > 0)
6898 break;
6899 continue;
6900
6901 default:
6902 continue;
6903 }
6904
6905 /* Get the value of the symbol referred to by the reloc. */
6906 h = NULL;
6907 if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
6908 {
6909 /* A local symbol. */
6910 Elf_Internal_Sym *isym;
6911
6912 /* Read this BFD's local symbols. */
6913 if (isymbuf == NULL)
6914 {
6915 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
6916 if (isymbuf == NULL)
6917 isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
6918 symtab_hdr->sh_info, 0,
6919 NULL, NULL, NULL);
6920 if (isymbuf == 0)
6921 goto error_return;
6922 }
6923 isym = isymbuf + ELF32_R_SYM (irel->r_info);
6924 if (isym->st_shndx == SHN_UNDEF)
6925 tsec = bfd_und_section_ptr;
6926 else if (isym->st_shndx == SHN_ABS)
6927 tsec = bfd_abs_section_ptr;
6928 else if (isym->st_shndx == SHN_COMMON)
6929 tsec = bfd_com_section_ptr;
6930 else
6931 tsec = bfd_section_from_elf_index (abfd, isym->st_shndx);
6932
6933 toff = isym->st_value;
6934 sym_type = ELF_ST_TYPE (isym->st_info);
6935 }
6936 else
6937 {
6938 /* Global symbol handling. */
6939 unsigned long indx;
6940
6941 indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
6942 h = elf_sym_hashes (abfd)[indx];
6943
6944 while (h->root.type == bfd_link_hash_indirect
6945 || h->root.type == bfd_link_hash_warning)
6946 h = (struct elf_link_hash_entry *) h->root.u.i.link;
6947
6948 if (h->root.type == bfd_link_hash_defined
6949 || h->root.type == bfd_link_hash_defweak)
6950 {
6951 tsec = h->root.u.def.section;
6952 toff = h->root.u.def.value;
6953 }
6954 else if (h->root.type == bfd_link_hash_undefined
6955 || h->root.type == bfd_link_hash_undefweak)
6956 {
6957 tsec = bfd_und_section_ptr;
6958 toff = bfd_link_relocatable (link_info) ? indx : 0;
6959 }
6960 else
6961 continue;
6962
6963 /* If this branch is to __tls_get_addr then we may later
6964 optimise away the call. We won't be needing a long-
6965 branch stub in that case. */
6966 if (bfd_link_executable (link_info)
6967 && h == htab->tls_get_addr
6968 && irel != internal_relocs)
6969 {
6970 unsigned long t_symndx = ELF32_R_SYM (irel[-1].r_info);
6971 unsigned long t_rtype = ELF32_R_TYPE (irel[-1].r_info);
6972 unsigned int tls_mask = 0;
6973
6974 /* The previous reloc should be one of R_PPC_TLSGD or
6975 R_PPC_TLSLD, or for older object files, a reloc
6976 on the __tls_get_addr arg setup insn. Get tls
6977 mask bits from the symbol on that reloc. */
6978 if (t_symndx < symtab_hdr->sh_info)
6979 {
6980 bfd_vma *local_got_offsets = elf_local_got_offsets (abfd);
6981
6982 if (local_got_offsets != NULL)
6983 {
6984 struct plt_entry **local_plt = (struct plt_entry **)
6985 (local_got_offsets + symtab_hdr->sh_info);
6986 char *lgot_masks = (char *)
6987 (local_plt + symtab_hdr->sh_info);
6988 tls_mask = lgot_masks[t_symndx];
6989 }
6990 }
6991 else
6992 {
6993 struct elf_link_hash_entry *th
6994 = elf_sym_hashes (abfd)[t_symndx - symtab_hdr->sh_info];
6995
6996 while (th->root.type == bfd_link_hash_indirect
6997 || th->root.type == bfd_link_hash_warning)
6998 th = (struct elf_link_hash_entry *) th->root.u.i.link;
6999
7000 tls_mask
7001 = ((struct ppc_elf_link_hash_entry *) th)->tls_mask;
7002 }
7003
7004 /* The mask bits tell us if the call will be
7005 optimised away. */
7006 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0
7007 && (t_rtype == R_PPC_TLSGD
7008 || t_rtype == R_PPC_GOT_TLSGD16
7009 || t_rtype == R_PPC_GOT_TLSGD16_LO))
7010 continue;
7011 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0
7012 && (t_rtype == R_PPC_TLSLD
7013 || t_rtype == R_PPC_GOT_TLSLD16
7014 || t_rtype == R_PPC_GOT_TLSLD16_LO))
7015 continue;
7016 }
7017
7018 sym_type = h->type;
7019 }
7020
7021 if (r_type == R_PPC_ADDR16_HA)
7022 {
7023 if (h != NULL
7024 && !h->def_regular
7025 && h->protected_def
7026 && ppc_elf_hash_entry (h)->has_addr16_ha
7027 && ppc_elf_hash_entry (h)->has_addr16_lo)
7028 picfixup_size += 12;
7029 continue;
7030 }
7031
7032 /* The condition here under which we call find_plt_ent must
7033 match that in relocate_section. If we call find_plt_ent here
7034 but not in relocate_section, or vice versa, then the branch
7035 destination used here may be incorrect. */
7036 plist = NULL;
7037 if (h != NULL)
7038 {
7039 /* We know is_branch_reloc (r_type) is true. */
7040 if (h->type == STT_GNU_IFUNC
7041 || r_type == R_PPC_PLTREL24)
7042 plist = &h->plt.plist;
7043 }
7044 else if (sym_type == STT_GNU_IFUNC
7045 && elf_local_got_offsets (abfd) != NULL)
7046 {
7047 bfd_vma *local_got_offsets = elf_local_got_offsets (abfd);
7048 struct plt_entry **local_plt = (struct plt_entry **)
7049 (local_got_offsets + symtab_hdr->sh_info);
7050 plist = local_plt + ELF32_R_SYM (irel->r_info);
7051 }
7052 if (plist != NULL)
7053 {
7054 bfd_vma addend = 0;
7055 struct plt_entry *ent;
7056
7057 if (r_type == R_PPC_PLTREL24 && bfd_link_pic (link_info))
7058 addend = irel->r_addend;
7059 ent = find_plt_ent (plist, got2, addend);
7060 if (ent != NULL)
7061 {
7062 if (htab->plt_type == PLT_NEW
7063 || h == NULL
7064 || !htab->elf.dynamic_sections_created
7065 || h->dynindx == -1)
7066 {
7067 tsec = htab->glink;
7068 toff = ent->glink_offset;
7069 }
7070 else
7071 {
7072 tsec = htab->elf.splt;
7073 toff = ent->plt.offset;
7074 }
7075 }
7076 }
7077
7078 /* If the branch and target are in the same section, you have
7079 no hope of adding stubs. We'll error out later should the
7080 branch overflow. */
7081 if (tsec == isec)
7082 continue;
7083
7084 /* There probably isn't any reason to handle symbols in
7085 SEC_MERGE sections; SEC_MERGE doesn't seem a likely
7086 attribute for a code section, and we are only looking at
7087 branches. However, implement it correctly here as a
7088 reference for other target relax_section functions. */
7089 if (0 && tsec->sec_info_type == SEC_INFO_TYPE_MERGE)
7090 {
7091 /* At this stage in linking, no SEC_MERGE symbol has been
7092 adjusted, so all references to such symbols need to be
7093 passed through _bfd_merged_section_offset. (Later, in
7094 relocate_section, all SEC_MERGE symbols *except* for
7095 section symbols have been adjusted.)
7096
7097 gas may reduce relocations against symbols in SEC_MERGE
7098 sections to a relocation against the section symbol when
7099 the original addend was zero. When the reloc is against
7100 a section symbol we should include the addend in the
7101 offset passed to _bfd_merged_section_offset, since the
7102 location of interest is the original symbol. On the
7103 other hand, an access to "sym+addend" where "sym" is not
7104 a section symbol should not include the addend; Such an
7105 access is presumed to be an offset from "sym"; The
7106 location of interest is just "sym". */
7107 if (sym_type == STT_SECTION)
7108 toff += irel->r_addend;
7109
7110 toff
7111 = _bfd_merged_section_offset (abfd, &tsec,
7112 elf_section_data (tsec)->sec_info,
7113 toff);
7114
7115 if (sym_type != STT_SECTION)
7116 toff += irel->r_addend;
7117 }
7118 /* PLTREL24 addends are special. */
7119 else if (r_type != R_PPC_PLTREL24)
7120 toff += irel->r_addend;
7121
7122 /* Attempted -shared link of non-pic code loses. */
7123 if ((!bfd_link_relocatable (link_info)
7124 && tsec == bfd_und_section_ptr)
7125 || tsec->output_section == NULL
7126 || (tsec->owner != NULL
7127 && (tsec->owner->flags & BFD_PLUGIN) != 0))
7128 continue;
7129
7130 roff = irel->r_offset;
7131
7132 /* If the branch is in range, no need to do anything. */
7133 if (tsec != bfd_und_section_ptr
7134 && (!bfd_link_relocatable (link_info)
7135 /* A relocatable link may have sections moved during
7136 final link, so do not presume they remain in range. */
7137 || tsec->output_section == isec->output_section))
7138 {
7139 bfd_vma symaddr, reladdr;
7140
7141 symaddr = tsec->output_section->vma + tsec->output_offset + toff;
7142 reladdr = isec->output_section->vma + isec->output_offset + roff;
7143 if (symaddr - reladdr + max_branch_offset
7144 < 2 * max_branch_offset)
7145 continue;
7146 }
7147
7148 /* Look for an existing fixup to this address. */
7149 for (f = branch_fixups; f ; f = f->next)
7150 if (f->tsec == tsec && f->toff == toff)
7151 break;
7152
7153 if (f == NULL)
7154 {
7155 size_t size;
7156 unsigned long stub_rtype;
7157
7158 val = trampoff - roff;
7159 if (val >= max_branch_offset)
7160 /* Oh dear, we can't reach a trampoline. Don't try to add
7161 one. We'll report an error later. */
7162 continue;
7163
7164 if (bfd_link_pic (link_info))
7165 {
7166 size = 4 * ARRAY_SIZE (shared_stub_entry);
7167 insn_offset = 12;
7168 }
7169 else
7170 {
7171 size = 4 * ARRAY_SIZE (stub_entry);
7172 insn_offset = 0;
7173 }
7174 if (!htab->params->speculate_indirect_jumps)
7175 size += 8;
7176 stub_rtype = R_PPC_RELAX;
7177 if (tsec == htab->elf.splt
7178 || tsec == htab->glink)
7179 {
7180 stub_rtype = R_PPC_RELAX_PLT;
7181 if (r_type == R_PPC_PLTREL24)
7182 stub_rtype = R_PPC_RELAX_PLTREL24;
7183 }
7184
7185 /* Hijack the old relocation. Since we need two
7186 relocations for this use a "composite" reloc. */
7187 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
7188 stub_rtype);
7189 irel->r_offset = trampoff + insn_offset;
7190 if (r_type == R_PPC_PLTREL24
7191 && stub_rtype != R_PPC_RELAX_PLTREL24)
7192 irel->r_addend = 0;
7193
7194 /* Record the fixup so we don't do it again this section. */
7195 f = bfd_malloc (sizeof (*f));
7196 f->next = branch_fixups;
7197 f->tsec = tsec;
7198 f->toff = toff;
7199 f->trampoff = trampoff;
7200 branch_fixups = f;
7201
7202 trampoff += size;
7203 changes++;
7204 }
7205 else
7206 {
7207 val = f->trampoff - roff;
7208 if (val >= max_branch_offset)
7209 continue;
7210
7211 /* Nop out the reloc, since we're finalizing things here. */
7212 irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
7213 }
7214
7215 /* Get the section contents. */
7216 if (contents == NULL)
7217 {
7218 /* Get cached copy if it exists. */
7219 if (elf_section_data (isec)->this_hdr.contents != NULL)
7220 contents = elf_section_data (isec)->this_hdr.contents;
7221 /* Go get them off disk. */
7222 else if (!bfd_malloc_and_get_section (abfd, isec, &contents))
7223 goto error_return;
7224 }
7225
7226 /* Fix up the existing branch to hit the trampoline. */
7227 hit_addr = contents + roff;
7228 switch (r_type)
7229 {
7230 case R_PPC_REL24:
7231 case R_PPC_LOCAL24PC:
7232 case R_PPC_PLTREL24:
7233 t0 = bfd_get_32 (abfd, hit_addr);
7234 t0 &= ~0x3fffffc;
7235 t0 |= val & 0x3fffffc;
7236 bfd_put_32 (abfd, t0, hit_addr);
7237 break;
7238
7239 case R_PPC_REL14:
7240 case R_PPC_REL14_BRTAKEN:
7241 case R_PPC_REL14_BRNTAKEN:
7242 t0 = bfd_get_32 (abfd, hit_addr);
7243 t0 &= ~0xfffc;
7244 t0 |= val & 0xfffc;
7245 bfd_put_32 (abfd, t0, hit_addr);
7246 break;
7247 }
7248 }
7249
7250 while (branch_fixups != NULL)
7251 {
7252 struct one_branch_fixup *f = branch_fixups;
7253 branch_fixups = branch_fixups->next;
7254 free (f);
7255 }
7256 }
7257
7258 workaround_change = FALSE;
7259 newsize = trampoff;
7260 if (htab->params->ppc476_workaround
7261 && (!bfd_link_relocatable (link_info)
7262 || isec->output_section->alignment_power >= htab->params->pagesize_p2))
7263 {
7264 bfd_vma addr, end_addr;
7265 unsigned int crossings;
7266 bfd_vma pagesize = (bfd_vma) 1 << htab->params->pagesize_p2;
7267
7268 addr = isec->output_section->vma + isec->output_offset;
7269 end_addr = addr + trampoff;
7270 addr &= -pagesize;
7271 crossings = ((end_addr & -pagesize) - addr) >> htab->params->pagesize_p2;
7272 if (crossings != 0)
7273 {
7274 /* Keep space aligned, to ensure the patch code itself does
7275 not cross a page. Don't decrease size calculated on a
7276 previous pass as otherwise we might never settle on a layout. */
7277 newsize = 15 - ((end_addr - 1) & 15);
7278 newsize += crossings * 16;
7279 if (relax_info->workaround_size < newsize)
7280 {
7281 relax_info->workaround_size = newsize;
7282 workaround_change = TRUE;
7283 }
7284 /* Ensure relocate_section is called. */
7285 isec->flags |= SEC_RELOC;
7286 }
7287 newsize = trampoff + relax_info->workaround_size;
7288 }
7289
7290 if (htab->params->pic_fixup > 0)
7291 {
7292 picfixup_size -= relax_info->picfixup_size;
7293 if (picfixup_size != 0)
7294 relax_info->picfixup_size += picfixup_size;
7295 newsize += relax_info->picfixup_size;
7296 }
7297
7298 if (changes != 0 || picfixup_size != 0 || workaround_change)
7299 isec->size = newsize;
7300
7301 if (isymbuf != NULL
7302 && symtab_hdr->contents != (unsigned char *) isymbuf)
7303 {
7304 if (! link_info->keep_memory)
7305 free (isymbuf);
7306 else
7307 {
7308 /* Cache the symbols for elf_link_input_bfd. */
7309 symtab_hdr->contents = (unsigned char *) isymbuf;
7310 }
7311 }
7312
7313 if (contents != NULL
7314 && elf_section_data (isec)->this_hdr.contents != contents)
7315 {
7316 if (!changes && !link_info->keep_memory)
7317 free (contents);
7318 else
7319 {
7320 /* Cache the section contents for elf_link_input_bfd. */
7321 elf_section_data (isec)->this_hdr.contents = contents;
7322 }
7323 }
7324
7325 changes += picfixup_size;
7326 if (changes != 0)
7327 {
7328 /* Append sufficient NOP relocs so we can write out relocation
7329 information for the trampolines. */
7330 Elf_Internal_Shdr *rel_hdr;
7331 Elf_Internal_Rela *new_relocs = bfd_malloc ((changes + isec->reloc_count)
7332 * sizeof (*new_relocs));
7333 unsigned ix;
7334
7335 if (!new_relocs)
7336 goto error_return;
7337 memcpy (new_relocs, internal_relocs,
7338 isec->reloc_count * sizeof (*new_relocs));
7339 for (ix = changes; ix--;)
7340 {
7341 irel = new_relocs + ix + isec->reloc_count;
7342
7343 irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
7344 }
7345 if (internal_relocs != elf_section_data (isec)->relocs)
7346 free (internal_relocs);
7347 elf_section_data (isec)->relocs = new_relocs;
7348 isec->reloc_count += changes;
7349 rel_hdr = _bfd_elf_single_rel_hdr (isec);
7350 rel_hdr->sh_size += changes * rel_hdr->sh_entsize;
7351 }
7352 else if (internal_relocs != NULL
7353 && elf_section_data (isec)->relocs != internal_relocs)
7354 free (internal_relocs);
7355
7356 *again = changes != 0 || workaround_change;
7357 return TRUE;
7358
7359 error_return:
7360 while (branch_fixups != NULL)
7361 {
7362 struct one_branch_fixup *f = branch_fixups;
7363 branch_fixups = branch_fixups->next;
7364 free (f);
7365 }
7366 if (isymbuf != NULL && (unsigned char *) isymbuf != symtab_hdr->contents)
7367 free (isymbuf);
7368 if (contents != NULL
7369 && elf_section_data (isec)->this_hdr.contents != contents)
7370 free (contents);
7371 if (internal_relocs != NULL
7372 && elf_section_data (isec)->relocs != internal_relocs)
7373 free (internal_relocs);
7374 return FALSE;
7375 }
7376 \f
7377 /* What to do when ld finds relocations against symbols defined in
7378 discarded sections. */
7379
7380 static unsigned int
7381 ppc_elf_action_discarded (asection *sec)
7382 {
7383 if (strcmp (".fixup", sec->name) == 0)
7384 return 0;
7385
7386 if (strcmp (".got2", sec->name) == 0)
7387 return 0;
7388
7389 return _bfd_elf_default_action_discarded (sec);
7390 }
7391 \f
7392 /* Fill in the address for a pointer generated in a linker section. */
7393
7394 static bfd_vma
7395 elf_finish_pointer_linker_section (bfd *input_bfd,
7396 elf_linker_section_t *lsect,
7397 struct elf_link_hash_entry *h,
7398 bfd_vma relocation,
7399 const Elf_Internal_Rela *rel)
7400 {
7401 elf_linker_section_pointers_t *linker_section_ptr;
7402
7403 BFD_ASSERT (lsect != NULL);
7404
7405 if (h != NULL)
7406 {
7407 /* Handle global symbol. */
7408 struct ppc_elf_link_hash_entry *eh;
7409
7410 eh = (struct ppc_elf_link_hash_entry *) h;
7411 BFD_ASSERT (eh->elf.def_regular);
7412 linker_section_ptr = eh->linker_section_pointer;
7413 }
7414 else
7415 {
7416 /* Handle local symbol. */
7417 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
7418
7419 BFD_ASSERT (is_ppc_elf (input_bfd));
7420 BFD_ASSERT (elf_local_ptr_offsets (input_bfd) != NULL);
7421 linker_section_ptr = elf_local_ptr_offsets (input_bfd)[r_symndx];
7422 }
7423
7424 linker_section_ptr = elf_find_pointer_linker_section (linker_section_ptr,
7425 rel->r_addend,
7426 lsect);
7427 BFD_ASSERT (linker_section_ptr != NULL);
7428
7429 /* Offset will always be a multiple of four, so use the bottom bit
7430 as a "written" flag. */
7431 if ((linker_section_ptr->offset & 1) == 0)
7432 {
7433 bfd_put_32 (lsect->section->owner,
7434 relocation + linker_section_ptr->addend,
7435 lsect->section->contents + linker_section_ptr->offset);
7436 linker_section_ptr->offset += 1;
7437 }
7438
7439 relocation = (lsect->section->output_section->vma
7440 + lsect->section->output_offset
7441 + linker_section_ptr->offset - 1
7442 - SYM_VAL (lsect->sym));
7443
7444 #ifdef DEBUG
7445 fprintf (stderr,
7446 "Finish pointer in linker section %s, offset = %ld (0x%lx)\n",
7447 lsect->name, (long) relocation, (long) relocation);
7448 #endif
7449
7450 return relocation;
7451 }
7452
7453 #define PPC_LO(v) ((v) & 0xffff)
7454 #define PPC_HI(v) (((v) >> 16) & 0xffff)
7455 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
7456
7457 static inline bfd_byte *
7458 output_bctr (struct ppc_elf_link_hash_table *htab, bfd *obfd, bfd_byte *p)
7459 {
7460 if (!htab->params->speculate_indirect_jumps)
7461 {
7462 bfd_put_32 (obfd, CRSETEQ, p);
7463 p += 4;
7464 bfd_put_32 (obfd, BEQCTRM, p);
7465 p += 4;
7466 bfd_put_32 (obfd, B, p);
7467 p += 4;
7468 }
7469 else
7470 {
7471 bfd_put_32 (obfd, BCTR, p);
7472 p += 4;
7473 }
7474 return p;
7475 }
7476
7477 static void
7478 write_glink_stub (struct elf_link_hash_entry *h, struct plt_entry *ent,
7479 asection *plt_sec, unsigned char *p,
7480 struct bfd_link_info *info)
7481 {
7482 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
7483 bfd *output_bfd = info->output_bfd;
7484 bfd_vma plt;
7485 unsigned char *end = p + GLINK_ENTRY_SIZE (htab, h);
7486
7487 if (h != NULL
7488 && h == htab->tls_get_addr
7489 && !htab->params->no_tls_get_addr_opt)
7490 {
7491 bfd_put_32 (output_bfd, LWZ_11_3, p);
7492 p += 4;
7493 bfd_put_32 (output_bfd, LWZ_12_3 + 4, p);
7494 p += 4;
7495 bfd_put_32 (output_bfd, MR_0_3, p);
7496 p += 4;
7497 bfd_put_32 (output_bfd, CMPWI_11_0, p);
7498 p += 4;
7499 bfd_put_32 (output_bfd, ADD_3_12_2, p);
7500 p += 4;
7501 bfd_put_32 (output_bfd, BEQLR, p);
7502 p += 4;
7503 bfd_put_32 (output_bfd, MR_3_0, p);
7504 p += 4;
7505 bfd_put_32 (output_bfd, NOP, p);
7506 p += 4;
7507 }
7508
7509 plt = ((ent->plt.offset & ~1)
7510 + plt_sec->output_section->vma
7511 + plt_sec->output_offset);
7512
7513 if (bfd_link_pic (info))
7514 {
7515 bfd_vma got = 0;
7516
7517 if (ent->addend >= 32768)
7518 got = (ent->addend
7519 + ent->sec->output_section->vma
7520 + ent->sec->output_offset);
7521 else if (htab->elf.hgot != NULL)
7522 got = SYM_VAL (htab->elf.hgot);
7523
7524 plt -= got;
7525
7526 if (plt + 0x8000 < 0x10000)
7527 bfd_put_32 (output_bfd, LWZ_11_30 + PPC_LO (plt), p);
7528 else
7529 {
7530 bfd_put_32 (output_bfd, ADDIS_11_30 + PPC_HA (plt), p);
7531 p += 4;
7532 bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
7533 }
7534 }
7535 else
7536 {
7537 bfd_put_32 (output_bfd, LIS_11 + PPC_HA (plt), p);
7538 p += 4;
7539 bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
7540 }
7541 p += 4;
7542 bfd_put_32 (output_bfd, MTCTR_11, p);
7543 p += 4;
7544 p = output_bctr (htab, output_bfd, p);
7545 while (p < end)
7546 {
7547 bfd_put_32 (output_bfd, htab->params->ppc476_workaround ? BA : NOP, p);
7548 p += 4;
7549 }
7550 }
7551
7552 /* Return true if symbol is defined statically. */
7553
7554 static bfd_boolean
7555 is_static_defined (struct elf_link_hash_entry *h)
7556 {
7557 return ((h->root.type == bfd_link_hash_defined
7558 || h->root.type == bfd_link_hash_defweak)
7559 && h->root.u.def.section != NULL
7560 && h->root.u.def.section->output_section != NULL);
7561 }
7562
7563 /* If INSN is an opcode that may be used with an @tls operand, return
7564 the transformed insn for TLS optimisation, otherwise return 0. If
7565 REG is non-zero only match an insn with RB or RA equal to REG. */
7566
7567 unsigned int
7568 _bfd_elf_ppc_at_tls_transform (unsigned int insn, unsigned int reg)
7569 {
7570 unsigned int rtra;
7571
7572 if ((insn & (0x3f << 26)) != 31 << 26)
7573 return 0;
7574
7575 if (reg == 0 || ((insn >> 11) & 0x1f) == reg)
7576 rtra = insn & ((1 << 26) - (1 << 16));
7577 else if (((insn >> 16) & 0x1f) == reg)
7578 rtra = (insn & (0x1f << 21)) | ((insn & (0x1f << 11)) << 5);
7579 else
7580 return 0;
7581
7582 if ((insn & (0x3ff << 1)) == 266 << 1)
7583 /* add -> addi. */
7584 insn = 14 << 26;
7585 else if ((insn & (0x1f << 1)) == 23 << 1
7586 && ((insn & (0x1f << 6)) < 14 << 6
7587 || ((insn & (0x1f << 6)) >= 16 << 6
7588 && (insn & (0x1f << 6)) < 24 << 6)))
7589 /* load and store indexed -> dform. */
7590 insn = (32 | ((insn >> 6) & 0x1f)) << 26;
7591 else if ((insn & (((0x1a << 5) | 0x1f) << 1)) == 21 << 1)
7592 /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
7593 insn = ((58 | ((insn >> 6) & 4)) << 26) | ((insn >> 6) & 1);
7594 else if ((insn & (((0x1f << 5) | 0x1f) << 1)) == 341 << 1)
7595 /* lwax -> lwa. */
7596 insn = (58 << 26) | 2;
7597 else
7598 return 0;
7599 insn |= rtra;
7600 return insn;
7601 }
7602
7603 /* If INSN is an opcode that may be used with an @tprel operand, return
7604 the transformed insn for an undefined weak symbol, ie. with the
7605 thread pointer REG operand removed. Otherwise return 0. */
7606
7607 unsigned int
7608 _bfd_elf_ppc_at_tprel_transform (unsigned int insn, unsigned int reg)
7609 {
7610 if ((insn & (0x1f << 16)) == reg << 16
7611 && ((insn & (0x3f << 26)) == 14u << 26 /* addi */
7612 || (insn & (0x3f << 26)) == 15u << 26 /* addis */
7613 || (insn & (0x3f << 26)) == 32u << 26 /* lwz */
7614 || (insn & (0x3f << 26)) == 34u << 26 /* lbz */
7615 || (insn & (0x3f << 26)) == 36u << 26 /* stw */
7616 || (insn & (0x3f << 26)) == 38u << 26 /* stb */
7617 || (insn & (0x3f << 26)) == 40u << 26 /* lhz */
7618 || (insn & (0x3f << 26)) == 42u << 26 /* lha */
7619 || (insn & (0x3f << 26)) == 44u << 26 /* sth */
7620 || (insn & (0x3f << 26)) == 46u << 26 /* lmw */
7621 || (insn & (0x3f << 26)) == 47u << 26 /* stmw */
7622 || (insn & (0x3f << 26)) == 48u << 26 /* lfs */
7623 || (insn & (0x3f << 26)) == 50u << 26 /* lfd */
7624 || (insn & (0x3f << 26)) == 52u << 26 /* stfs */
7625 || (insn & (0x3f << 26)) == 54u << 26 /* stfd */
7626 || ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
7627 && (insn & 3) != 1)
7628 || ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */
7629 && ((insn & 3) == 0 || (insn & 3) == 3))))
7630 {
7631 insn &= ~(0x1f << 16);
7632 }
7633 else if ((insn & (0x1f << 21)) == reg << 21
7634 && ((insn & (0x3e << 26)) == 24u << 26 /* ori, oris */
7635 || (insn & (0x3e << 26)) == 26u << 26 /* xori,xoris */
7636 || (insn & (0x3e << 26)) == 28u << 26 /* andi,andis */))
7637 {
7638 insn &= ~(0x1f << 21);
7639 insn |= (insn & (0x1f << 16)) << 5;
7640 if ((insn & (0x3e << 26)) == 26 << 26 /* xori,xoris */)
7641 insn -= 2 >> 26; /* convert to ori,oris */
7642 }
7643 else
7644 insn = 0;
7645 return insn;
7646 }
7647
7648 static bfd_boolean
7649 is_insn_ds_form (unsigned int insn)
7650 {
7651 return ((insn & (0x3f << 26)) == 58u << 26 /* ld,ldu,lwa */
7652 || (insn & (0x3f << 26)) == 62u << 26 /* std,stdu,stq */
7653 || (insn & (0x3f << 26)) == 57u << 26 /* lfdp */
7654 || (insn & (0x3f << 26)) == 61u << 26 /* stfdp */);
7655 }
7656
7657 static bfd_boolean
7658 is_insn_dq_form (unsigned int insn)
7659 {
7660 return ((insn & (0x3f << 26)) == 56u << 26 /* lq */
7661 || ((insn & (0x3f << 26)) == (61u << 26) /* lxv, stxv */
7662 && (insn & 3) == 1));
7663 }
7664
7665 /* The RELOCATE_SECTION function is called by the ELF backend linker
7666 to handle the relocations for a section.
7667
7668 The relocs are always passed as Rela structures; if the section
7669 actually uses Rel structures, the r_addend field will always be
7670 zero.
7671
7672 This function is responsible for adjust the section contents as
7673 necessary, and (if using Rela relocs and generating a
7674 relocatable output file) adjusting the reloc addend as
7675 necessary.
7676
7677 This function does not have to worry about setting the reloc
7678 address or the reloc symbol index.
7679
7680 LOCAL_SYMS is a pointer to the swapped in local symbols.
7681
7682 LOCAL_SECTIONS is an array giving the section in the input file
7683 corresponding to the st_shndx field of each local symbol.
7684
7685 The global hash table entry for the global symbols can be found
7686 via elf_sym_hashes (input_bfd).
7687
7688 When generating relocatable output, this function must handle
7689 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
7690 going to be the section symbol corresponding to the output
7691 section, which means that the addend must be adjusted
7692 accordingly. */
7693
7694 static bfd_boolean
7695 ppc_elf_relocate_section (bfd *output_bfd,
7696 struct bfd_link_info *info,
7697 bfd *input_bfd,
7698 asection *input_section,
7699 bfd_byte *contents,
7700 Elf_Internal_Rela *relocs,
7701 Elf_Internal_Sym *local_syms,
7702 asection **local_sections)
7703 {
7704 Elf_Internal_Shdr *symtab_hdr;
7705 struct elf_link_hash_entry **sym_hashes;
7706 struct ppc_elf_link_hash_table *htab;
7707 Elf_Internal_Rela *rel;
7708 Elf_Internal_Rela *wrel;
7709 Elf_Internal_Rela *relend;
7710 Elf_Internal_Rela outrel;
7711 asection *got2;
7712 bfd_vma *local_got_offsets;
7713 bfd_boolean ret = TRUE;
7714 bfd_vma d_offset = (bfd_big_endian (input_bfd) ? 2 : 0);
7715 bfd_boolean is_vxworks_tls;
7716 unsigned int picfixup_size = 0;
7717 struct ppc_elf_relax_info *relax_info = NULL;
7718
7719 #ifdef DEBUG
7720 _bfd_error_handler ("ppc_elf_relocate_section called for %B section %A, "
7721 "%ld relocations%s",
7722 input_bfd, input_section,
7723 (long) input_section->reloc_count,
7724 (bfd_link_relocatable (info)) ? " (relocatable)" : "");
7725 #endif
7726
7727 got2 = bfd_get_section_by_name (input_bfd, ".got2");
7728
7729 /* Initialize howto table if not already done. */
7730 if (!ppc_elf_howto_table[R_PPC_ADDR32])
7731 ppc_elf_howto_init ();
7732
7733 htab = ppc_elf_hash_table (info);
7734 local_got_offsets = elf_local_got_offsets (input_bfd);
7735 symtab_hdr = &elf_symtab_hdr (input_bfd);
7736 sym_hashes = elf_sym_hashes (input_bfd);
7737 /* We have to handle relocations in vxworks .tls_vars sections
7738 specially, because the dynamic loader is 'weird'. */
7739 is_vxworks_tls = (htab->is_vxworks && bfd_link_pic (info)
7740 && !strcmp (input_section->output_section->name,
7741 ".tls_vars"));
7742 if (input_section->sec_info_type == SEC_INFO_TYPE_TARGET)
7743 relax_info = elf_section_data (input_section)->sec_info;
7744 rel = wrel = relocs;
7745 relend = relocs + input_section->reloc_count;
7746 for (; rel < relend; wrel++, rel++)
7747 {
7748 enum elf_ppc_reloc_type r_type;
7749 bfd_vma addend;
7750 bfd_reloc_status_type r;
7751 Elf_Internal_Sym *sym;
7752 asection *sec;
7753 struct elf_link_hash_entry *h;
7754 const char *sym_name;
7755 reloc_howto_type *howto;
7756 unsigned long r_symndx;
7757 bfd_vma relocation;
7758 bfd_vma branch_bit, from;
7759 bfd_boolean unresolved_reloc;
7760 bfd_boolean warned;
7761 unsigned int tls_type, tls_mask, tls_gd;
7762 struct plt_entry **ifunc;
7763 struct reloc_howto_struct alt_howto;
7764
7765 again:
7766 r_type = ELF32_R_TYPE (rel->r_info);
7767 sym = NULL;
7768 sec = NULL;
7769 h = NULL;
7770 unresolved_reloc = FALSE;
7771 warned = FALSE;
7772 r_symndx = ELF32_R_SYM (rel->r_info);
7773
7774 if (r_symndx < symtab_hdr->sh_info)
7775 {
7776 sym = local_syms + r_symndx;
7777 sec = local_sections[r_symndx];
7778 sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
7779
7780 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
7781 }
7782 else
7783 {
7784 bfd_boolean ignored;
7785
7786 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
7787 r_symndx, symtab_hdr, sym_hashes,
7788 h, sec, relocation,
7789 unresolved_reloc, warned, ignored);
7790
7791 sym_name = h->root.root.string;
7792 }
7793
7794 if (sec != NULL && discarded_section (sec))
7795 {
7796 /* For relocs against symbols from removed linkonce sections,
7797 or sections discarded by a linker script, we just want the
7798 section contents zeroed. Avoid any special processing. */
7799 howto = NULL;
7800 if (r_type < R_PPC_max)
7801 howto = ppc_elf_howto_table[r_type];
7802
7803 _bfd_clear_contents (howto, input_bfd, input_section,
7804 contents + rel->r_offset);
7805 wrel->r_offset = rel->r_offset;
7806 wrel->r_info = 0;
7807 wrel->r_addend = 0;
7808
7809 /* For ld -r, remove relocations in debug sections against
7810 symbols defined in discarded sections. Not done for
7811 non-debug to preserve relocs in .eh_frame which the
7812 eh_frame editing code expects to be present. */
7813 if (bfd_link_relocatable (info)
7814 && (input_section->flags & SEC_DEBUGGING))
7815 wrel--;
7816
7817 continue;
7818 }
7819
7820 if (bfd_link_relocatable (info))
7821 {
7822 if (got2 != NULL
7823 && r_type == R_PPC_PLTREL24
7824 && rel->r_addend != 0)
7825 {
7826 /* R_PPC_PLTREL24 is rather special. If non-zero, the
7827 addend specifies the GOT pointer offset within .got2. */
7828 rel->r_addend += got2->output_offset;
7829 }
7830 if (r_type != R_PPC_RELAX_PLT
7831 && r_type != R_PPC_RELAX_PLTREL24
7832 && r_type != R_PPC_RELAX)
7833 goto copy_reloc;
7834 }
7835
7836 /* TLS optimizations. Replace instruction sequences and relocs
7837 based on information we collected in tls_optimize. We edit
7838 RELOCS so that --emit-relocs will output something sensible
7839 for the final instruction stream. */
7840 tls_mask = 0;
7841 tls_gd = 0;
7842 if (h != NULL)
7843 tls_mask = ((struct ppc_elf_link_hash_entry *) h)->tls_mask;
7844 else if (local_got_offsets != NULL)
7845 {
7846 struct plt_entry **local_plt;
7847 char *lgot_masks;
7848 local_plt
7849 = (struct plt_entry **) (local_got_offsets + symtab_hdr->sh_info);
7850 lgot_masks = (char *) (local_plt + symtab_hdr->sh_info);
7851 tls_mask = lgot_masks[r_symndx];
7852 }
7853
7854 /* Ensure reloc mapping code below stays sane. */
7855 if ((R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TLSGD16 & 3)
7856 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TLSGD16_LO & 3)
7857 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TLSGD16_HI & 3)
7858 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TLSGD16_HA & 3)
7859 || (R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TPREL16 & 3)
7860 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TPREL16_LO & 3)
7861 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TPREL16_HI & 3)
7862 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TPREL16_HA & 3))
7863 abort ();
7864 switch (r_type)
7865 {
7866 default:
7867 break;
7868
7869 case R_PPC_GOT_TPREL16:
7870 case R_PPC_GOT_TPREL16_LO:
7871 if ((tls_mask & TLS_TLS) != 0
7872 && (tls_mask & TLS_TPREL) == 0)
7873 {
7874 bfd_vma insn;
7875
7876 insn = bfd_get_32 (input_bfd,
7877 contents + rel->r_offset - d_offset);
7878 insn &= 31 << 21;
7879 insn |= 0x3c020000; /* addis 0,2,0 */
7880 bfd_put_32 (input_bfd, insn,
7881 contents + rel->r_offset - d_offset);
7882 r_type = R_PPC_TPREL16_HA;
7883 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7884 }
7885 break;
7886
7887 case R_PPC_TLS:
7888 if ((tls_mask & TLS_TLS) != 0
7889 && (tls_mask & TLS_TPREL) == 0)
7890 {
7891 bfd_vma insn;
7892
7893 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
7894 insn = _bfd_elf_ppc_at_tls_transform (insn, 2);
7895 if (insn == 0)
7896 abort ();
7897 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
7898 r_type = R_PPC_TPREL16_LO;
7899 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7900
7901 /* Was PPC_TLS which sits on insn boundary, now
7902 PPC_TPREL16_LO which is at low-order half-word. */
7903 rel->r_offset += d_offset;
7904 }
7905 break;
7906
7907 case R_PPC_GOT_TLSGD16_HI:
7908 case R_PPC_GOT_TLSGD16_HA:
7909 tls_gd = TLS_TPRELGD;
7910 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
7911 goto tls_gdld_hi;
7912 break;
7913
7914 case R_PPC_GOT_TLSLD16_HI:
7915 case R_PPC_GOT_TLSLD16_HA:
7916 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
7917 {
7918 tls_gdld_hi:
7919 if ((tls_mask & tls_gd) != 0)
7920 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
7921 + R_PPC_GOT_TPREL16);
7922 else
7923 {
7924 rel->r_offset -= d_offset;
7925 bfd_put_32 (input_bfd, NOP, contents + rel->r_offset);
7926 r_type = R_PPC_NONE;
7927 }
7928 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7929 }
7930 break;
7931
7932 case R_PPC_GOT_TLSGD16:
7933 case R_PPC_GOT_TLSGD16_LO:
7934 tls_gd = TLS_TPRELGD;
7935 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
7936 goto tls_ldgd_opt;
7937 break;
7938
7939 case R_PPC_GOT_TLSLD16:
7940 case R_PPC_GOT_TLSLD16_LO:
7941 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
7942 {
7943 unsigned int insn1, insn2;
7944 bfd_vma offset;
7945
7946 tls_ldgd_opt:
7947 offset = (bfd_vma) -1;
7948 /* If not using the newer R_PPC_TLSGD/LD to mark
7949 __tls_get_addr calls, we must trust that the call
7950 stays with its arg setup insns, ie. that the next
7951 reloc is the __tls_get_addr call associated with
7952 the current reloc. Edit both insns. */
7953 if (input_section->has_tls_get_addr_call
7954 && rel + 1 < relend
7955 && branch_reloc_hash_match (input_bfd, rel + 1,
7956 htab->tls_get_addr))
7957 offset = rel[1].r_offset;
7958 /* We read the low GOT_TLS insn because we need to keep
7959 the destination reg. It may be something other than
7960 the usual r3, and moved to r3 before the call by
7961 intervening code. */
7962 insn1 = bfd_get_32 (input_bfd,
7963 contents + rel->r_offset - d_offset);
7964 if ((tls_mask & tls_gd) != 0)
7965 {
7966 /* IE */
7967 insn1 &= (0x1f << 21) | (0x1f << 16);
7968 insn1 |= 32 << 26; /* lwz */
7969 if (offset != (bfd_vma) -1)
7970 {
7971 rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
7972 insn2 = 0x7c631214; /* add 3,3,2 */
7973 bfd_put_32 (input_bfd, insn2, contents + offset);
7974 }
7975 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
7976 + R_PPC_GOT_TPREL16);
7977 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7978 }
7979 else
7980 {
7981 /* LE */
7982 insn1 &= 0x1f << 21;
7983 insn1 |= 0x3c020000; /* addis r,2,0 */
7984 if (tls_gd == 0)
7985 {
7986 /* Was an LD reloc. */
7987 for (r_symndx = 0;
7988 r_symndx < symtab_hdr->sh_info;
7989 r_symndx++)
7990 if (local_sections[r_symndx] == sec)
7991 break;
7992 if (r_symndx >= symtab_hdr->sh_info)
7993 r_symndx = STN_UNDEF;
7994 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
7995 if (r_symndx != STN_UNDEF)
7996 rel->r_addend -= (local_syms[r_symndx].st_value
7997 + sec->output_offset
7998 + sec->output_section->vma);
7999 }
8000 r_type = R_PPC_TPREL16_HA;
8001 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
8002 if (offset != (bfd_vma) -1)
8003 {
8004 rel[1].r_info = ELF32_R_INFO (r_symndx, R_PPC_TPREL16_LO);
8005 rel[1].r_offset = offset + d_offset;
8006 rel[1].r_addend = rel->r_addend;
8007 insn2 = 0x38630000; /* addi 3,3,0 */
8008 bfd_put_32 (input_bfd, insn2, contents + offset);
8009 }
8010 }
8011 bfd_put_32 (input_bfd, insn1,
8012 contents + rel->r_offset - d_offset);
8013 if (tls_gd == 0)
8014 {
8015 /* We changed the symbol on an LD reloc. Start over
8016 in order to get h, sym, sec etc. right. */
8017 goto again;
8018 }
8019 }
8020 break;
8021
8022 case R_PPC_TLSGD:
8023 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
8024 {
8025 unsigned int insn2;
8026 bfd_vma offset = rel->r_offset;
8027
8028 if ((tls_mask & TLS_TPRELGD) != 0)
8029 {
8030 /* IE */
8031 r_type = R_PPC_NONE;
8032 insn2 = 0x7c631214; /* add 3,3,2 */
8033 }
8034 else
8035 {
8036 /* LE */
8037 r_type = R_PPC_TPREL16_LO;
8038 rel->r_offset += d_offset;
8039 insn2 = 0x38630000; /* addi 3,3,0 */
8040 }
8041 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
8042 bfd_put_32 (input_bfd, insn2, contents + offset);
8043 /* Zap the reloc on the _tls_get_addr call too. */
8044 BFD_ASSERT (offset == rel[1].r_offset);
8045 rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
8046 }
8047 break;
8048
8049 case R_PPC_TLSLD:
8050 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
8051 {
8052 unsigned int insn2;
8053
8054 for (r_symndx = 0;
8055 r_symndx < symtab_hdr->sh_info;
8056 r_symndx++)
8057 if (local_sections[r_symndx] == sec)
8058 break;
8059 if (r_symndx >= symtab_hdr->sh_info)
8060 r_symndx = STN_UNDEF;
8061 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
8062 if (r_symndx != STN_UNDEF)
8063 rel->r_addend -= (local_syms[r_symndx].st_value
8064 + sec->output_offset
8065 + sec->output_section->vma);
8066
8067 rel->r_info = ELF32_R_INFO (r_symndx, R_PPC_TPREL16_LO);
8068 rel->r_offset += d_offset;
8069 insn2 = 0x38630000; /* addi 3,3,0 */
8070 bfd_put_32 (input_bfd, insn2,
8071 contents + rel->r_offset - d_offset);
8072 /* Zap the reloc on the _tls_get_addr call too. */
8073 BFD_ASSERT (rel->r_offset - d_offset == rel[1].r_offset);
8074 rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
8075 goto again;
8076 }
8077 break;
8078 }
8079
8080 /* Handle other relocations that tweak non-addend part of insn. */
8081 branch_bit = 0;
8082 switch (r_type)
8083 {
8084 default:
8085 break;
8086
8087 /* Branch taken prediction relocations. */
8088 case R_PPC_ADDR14_BRTAKEN:
8089 case R_PPC_REL14_BRTAKEN:
8090 branch_bit = BRANCH_PREDICT_BIT;
8091 /* Fall through. */
8092
8093 /* Branch not taken prediction relocations. */
8094 case R_PPC_ADDR14_BRNTAKEN:
8095 case R_PPC_REL14_BRNTAKEN:
8096 {
8097 bfd_vma insn;
8098
8099 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
8100 insn &= ~BRANCH_PREDICT_BIT;
8101 insn |= branch_bit;
8102
8103 from = (rel->r_offset
8104 + input_section->output_offset
8105 + input_section->output_section->vma);
8106
8107 /* Invert 'y' bit if not the default. */
8108 if ((bfd_signed_vma) (relocation + rel->r_addend - from) < 0)
8109 insn ^= BRANCH_PREDICT_BIT;
8110
8111 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
8112 break;
8113 }
8114 }
8115
8116 if (ELIMINATE_COPY_RELOCS
8117 && h != NULL
8118 && !h->def_regular
8119 && h->protected_def
8120 && ppc_elf_hash_entry (h)->has_addr16_ha
8121 && ppc_elf_hash_entry (h)->has_addr16_lo
8122 && htab->params->pic_fixup > 0)
8123 {
8124 /* Convert lis;addi or lis;load/store accessing a protected
8125 variable defined in a shared library to PIC. */
8126 unsigned int insn;
8127
8128 if (r_type == R_PPC_ADDR16_HA)
8129 {
8130 insn = bfd_get_32 (input_bfd,
8131 contents + rel->r_offset - d_offset);
8132 if ((insn & (0x3f << 26)) == (15u << 26)
8133 && (insn & (0x1f << 16)) == 0 /* lis */)
8134 {
8135 bfd_byte *p;
8136 bfd_vma off;
8137 bfd_vma got_addr;
8138
8139 p = (contents + input_section->size
8140 - relax_info->workaround_size
8141 - relax_info->picfixup_size
8142 + picfixup_size);
8143 off = (p - contents) - (rel->r_offset - d_offset);
8144 if (off > 0x1fffffc || (off & 3) != 0)
8145 info->callbacks->einfo
8146 (_("%H: fixup branch overflow\n"),
8147 input_bfd, input_section, rel->r_offset);
8148
8149 bfd_put_32 (input_bfd, B | off,
8150 contents + rel->r_offset - d_offset);
8151 got_addr = (htab->elf.sgot->output_section->vma
8152 + htab->elf.sgot->output_offset
8153 + (h->got.offset & ~1));
8154 wrel->r_offset = (p - contents) + d_offset;
8155 wrel->r_info = ELF32_R_INFO (0, R_PPC_ADDR16_HA);
8156 wrel->r_addend = got_addr;
8157 insn &= ~0xffff;
8158 insn |= ((unsigned int) (got_addr + 0x8000) >> 16) & 0xffff;
8159 bfd_put_32 (input_bfd, insn, p);
8160
8161 /* Convert lis to lwz, loading address from GOT. */
8162 insn &= ~0xffff;
8163 insn ^= (32u ^ 15u) << 26;
8164 insn |= (insn & (0x1f << 21)) >> 5;
8165 insn |= got_addr & 0xffff;
8166 bfd_put_32 (input_bfd, insn, p + 4);
8167
8168 bfd_put_32 (input_bfd, B | ((-4 - off) & 0x3ffffff), p + 8);
8169 picfixup_size += 12;
8170
8171 /* Use one of the spare relocs, so --emit-relocs
8172 output is reasonable. */
8173 memmove (rel + 1, rel, (relend - rel - 1) * sizeof (*rel));
8174 wrel++, rel++;
8175 rel->r_offset = wrel[-1].r_offset + 4;
8176 rel->r_info = ELF32_R_INFO (0, R_PPC_ADDR16_LO);
8177 rel->r_addend = wrel[-1].r_addend;
8178
8179 /* Continue on as if we had a got reloc, to output
8180 dynamic reloc. */
8181 r_type = R_PPC_GOT16_LO;
8182 }
8183 else
8184 _bfd_error_handler
8185 /* xgettext:c-format */
8186 (_("%B(%A+%#Lx): error: %s with unexpected instruction %#x"),
8187 input_bfd, input_section, rel->r_offset,
8188 "R_PPC_ADDR16_HA", insn);
8189 }
8190 else if (r_type == R_PPC_ADDR16_LO)
8191 {
8192 insn = bfd_get_32 (input_bfd,
8193 contents + rel->r_offset - d_offset);
8194 if ((insn & (0x3f << 26)) == 14u << 26 /* addi */
8195 || (insn & (0x3f << 26)) == 32u << 26 /* lwz */
8196 || (insn & (0x3f << 26)) == 34u << 26 /* lbz */
8197 || (insn & (0x3f << 26)) == 36u << 26 /* stw */
8198 || (insn & (0x3f << 26)) == 38u << 26 /* stb */
8199 || (insn & (0x3f << 26)) == 40u << 26 /* lhz */
8200 || (insn & (0x3f << 26)) == 42u << 26 /* lha */
8201 || (insn & (0x3f << 26)) == 44u << 26 /* sth */
8202 || (insn & (0x3f << 26)) == 46u << 26 /* lmw */
8203 || (insn & (0x3f << 26)) == 47u << 26 /* stmw */
8204 || (insn & (0x3f << 26)) == 48u << 26 /* lfs */
8205 || (insn & (0x3f << 26)) == 50u << 26 /* lfd */
8206 || (insn & (0x3f << 26)) == 52u << 26 /* stfs */
8207 || (insn & (0x3f << 26)) == 54u << 26 /* stfd */
8208 || ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
8209 && (insn & 3) != 1)
8210 || ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */
8211 && ((insn & 3) == 0 || (insn & 3) == 3)))
8212 {
8213 /* Arrange to apply the reloc addend, if any. */
8214 relocation = 0;
8215 unresolved_reloc = FALSE;
8216 rel->r_info = ELF32_R_INFO (0, r_type);
8217 }
8218 else
8219 _bfd_error_handler
8220 /* xgettext:c-format */
8221 (_("%B(%A+%#Lx): error: %s with unexpected instruction %#x"),
8222 input_bfd, input_section, rel->r_offset,
8223 "R_PPC_ADDR16_LO", insn);
8224 }
8225 }
8226
8227 ifunc = NULL;
8228 if (!htab->is_vxworks)
8229 {
8230 struct plt_entry *ent;
8231
8232 if (h != NULL)
8233 {
8234 if (h->type == STT_GNU_IFUNC)
8235 ifunc = &h->plt.plist;
8236 }
8237 else if (local_got_offsets != NULL
8238 && ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
8239 {
8240 struct plt_entry **local_plt;
8241
8242 local_plt = (struct plt_entry **) (local_got_offsets
8243 + symtab_hdr->sh_info);
8244 ifunc = local_plt + r_symndx;
8245 }
8246
8247 ent = NULL;
8248 if (ifunc != NULL
8249 && (!bfd_link_pic (info)
8250 || is_branch_reloc (r_type)))
8251 {
8252 addend = 0;
8253 if (r_type == R_PPC_PLTREL24 && bfd_link_pic (info))
8254 addend = rel->r_addend;
8255 ent = find_plt_ent (ifunc, got2, addend);
8256 }
8257 if (ent != NULL)
8258 {
8259 if (bfd_link_pic (info)
8260 && ent->sec != got2
8261 && htab->plt_type != PLT_NEW
8262 && (!htab->elf.dynamic_sections_created
8263 || h == NULL
8264 || h->dynindx == -1))
8265 {
8266 /* Uh oh, we are going to create a pic glink stub
8267 for an ifunc (here for h == NULL and later in
8268 finish_dynamic_symbol for h != NULL), and
8269 apparently are using code compiled with
8270 -mbss-plt. The difficulty is that -mbss-plt code
8271 gives no indication via a magic PLTREL24 addend
8272 whether r30 is equal to _GLOBAL_OFFSET_TABLE_ or
8273 is pointing into a .got2 section (and how far
8274 into .got2). */
8275 info->callbacks->einfo
8276 /* xgettext:c-format */
8277 (_("%X%H: unsupported bss-plt -fPIC ifunc %s\n"),
8278 input_bfd, input_section, rel->r_offset, sym_name);
8279 }
8280 if (h == NULL && (ent->plt.offset & 1) == 0)
8281 {
8282 Elf_Internal_Rela rela;
8283 bfd_byte *loc;
8284
8285 rela.r_offset = (htab->elf.iplt->output_section->vma
8286 + htab->elf.iplt->output_offset
8287 + ent->plt.offset);
8288 rela.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
8289 rela.r_addend = relocation;
8290 loc = htab->elf.irelplt->contents;
8291 loc += (htab->elf.irelplt->reloc_count++
8292 * sizeof (Elf32_External_Rela));
8293 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
8294 htab->local_ifunc_resolver = 1;
8295
8296 ent->plt.offset |= 1;
8297 }
8298 if (h == NULL && (ent->glink_offset & 1) == 0)
8299 {
8300 unsigned char *p = ((unsigned char *) htab->glink->contents
8301 + ent->glink_offset);
8302
8303 write_glink_stub (NULL, ent, htab->elf.iplt, p, info);
8304 ent->glink_offset |= 1;
8305 }
8306
8307 unresolved_reloc = FALSE;
8308 if (htab->plt_type == PLT_NEW
8309 || !htab->elf.dynamic_sections_created
8310 || h == NULL
8311 || h->dynindx == -1)
8312 relocation = (htab->glink->output_section->vma
8313 + htab->glink->output_offset
8314 + (ent->glink_offset & ~1));
8315 else
8316 relocation = (htab->elf.splt->output_section->vma
8317 + htab->elf.splt->output_offset
8318 + ent->plt.offset);
8319 }
8320 }
8321
8322 addend = rel->r_addend;
8323 howto = NULL;
8324 if (r_type < R_PPC_max)
8325 howto = ppc_elf_howto_table[r_type];
8326
8327 switch (r_type)
8328 {
8329 default:
8330 break;
8331
8332 case R_PPC_TPREL16_HA:
8333 if (htab->do_tls_opt && relocation + addend + 0x8000 < 0x10000)
8334 {
8335 bfd_byte *p = contents + (rel->r_offset & ~3);
8336 unsigned int insn = bfd_get_32 (input_bfd, p);
8337 if ((insn & ((0x3f << 26) | 0x1f << 16))
8338 != ((15u << 26) | (2 << 16)) /* addis rt,2,imm */)
8339 /* xgettext:c-format */
8340 info->callbacks->minfo
8341 (_("%H: warning: %s unexpected insn %#x.\n"),
8342 input_bfd, input_section, rel->r_offset, howto->name, insn);
8343 else
8344 bfd_put_32 (input_bfd, NOP, p);
8345 }
8346 break;
8347
8348 case R_PPC_TPREL16_LO:
8349 if (htab->do_tls_opt && relocation + addend + 0x8000 < 0x10000)
8350 {
8351 bfd_byte *p = contents + (rel->r_offset & ~3);
8352 unsigned int insn = bfd_get_32 (input_bfd, p);
8353 insn &= ~(0x1f << 16);
8354 insn |= 2 << 16;
8355 bfd_put_32 (input_bfd, insn, p);
8356 }
8357 break;
8358 }
8359
8360 tls_type = 0;
8361 switch (r_type)
8362 {
8363 default:
8364 info->callbacks->einfo
8365 /* xgettext:c-format */
8366 (_("%P: %B: unknown relocation type %d for symbol %s\n"),
8367 input_bfd, (int) r_type, sym_name);
8368
8369 bfd_set_error (bfd_error_bad_value);
8370 ret = FALSE;
8371 goto copy_reloc;
8372
8373 case R_PPC_NONE:
8374 case R_PPC_TLS:
8375 case R_PPC_TLSGD:
8376 case R_PPC_TLSLD:
8377 case R_PPC_EMB_MRKREF:
8378 case R_PPC_GNU_VTINHERIT:
8379 case R_PPC_GNU_VTENTRY:
8380 goto copy_reloc;
8381
8382 /* GOT16 relocations. Like an ADDR16 using the symbol's
8383 address in the GOT as relocation value instead of the
8384 symbol's value itself. Also, create a GOT entry for the
8385 symbol and put the symbol value there. */
8386 case R_PPC_GOT_TLSGD16:
8387 case R_PPC_GOT_TLSGD16_LO:
8388 case R_PPC_GOT_TLSGD16_HI:
8389 case R_PPC_GOT_TLSGD16_HA:
8390 tls_type = TLS_TLS | TLS_GD;
8391 goto dogot;
8392
8393 case R_PPC_GOT_TLSLD16:
8394 case R_PPC_GOT_TLSLD16_LO:
8395 case R_PPC_GOT_TLSLD16_HI:
8396 case R_PPC_GOT_TLSLD16_HA:
8397 tls_type = TLS_TLS | TLS_LD;
8398 goto dogot;
8399
8400 case R_PPC_GOT_TPREL16:
8401 case R_PPC_GOT_TPREL16_LO:
8402 case R_PPC_GOT_TPREL16_HI:
8403 case R_PPC_GOT_TPREL16_HA:
8404 tls_type = TLS_TLS | TLS_TPREL;
8405 goto dogot;
8406
8407 case R_PPC_GOT_DTPREL16:
8408 case R_PPC_GOT_DTPREL16_LO:
8409 case R_PPC_GOT_DTPREL16_HI:
8410 case R_PPC_GOT_DTPREL16_HA:
8411 tls_type = TLS_TLS | TLS_DTPREL;
8412 goto dogot;
8413
8414 case R_PPC_GOT16:
8415 case R_PPC_GOT16_LO:
8416 case R_PPC_GOT16_HI:
8417 case R_PPC_GOT16_HA:
8418 tls_mask = 0;
8419 dogot:
8420 {
8421 /* Relocation is to the entry for this symbol in the global
8422 offset table. */
8423 bfd_vma off;
8424 bfd_vma *offp;
8425 unsigned long indx;
8426
8427 if (htab->elf.sgot == NULL)
8428 abort ();
8429
8430 indx = 0;
8431 if (tls_type == (TLS_TLS | TLS_LD)
8432 && (h == NULL
8433 || !h->def_dynamic))
8434 offp = &htab->tlsld_got.offset;
8435 else if (h != NULL)
8436 {
8437 if (!htab->elf.dynamic_sections_created
8438 || h->dynindx == -1
8439 || SYMBOL_REFERENCES_LOCAL (info, h)
8440 || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h))
8441 /* This is actually a static link, or it is a
8442 -Bsymbolic link and the symbol is defined
8443 locally, or the symbol was forced to be local
8444 because of a version file. */
8445 ;
8446 else
8447 {
8448 indx = h->dynindx;
8449 unresolved_reloc = FALSE;
8450 }
8451 offp = &h->got.offset;
8452 }
8453 else
8454 {
8455 if (local_got_offsets == NULL)
8456 abort ();
8457 offp = &local_got_offsets[r_symndx];
8458 }
8459
8460 /* The offset must always be a multiple of 4. We use the
8461 least significant bit to record whether we have already
8462 processed this entry. */
8463 off = *offp;
8464 if ((off & 1) != 0)
8465 off &= ~1;
8466 else
8467 {
8468 unsigned int tls_m = (tls_mask
8469 & (TLS_LD | TLS_GD | TLS_DTPREL
8470 | TLS_TPREL | TLS_TPRELGD));
8471
8472 if (offp == &htab->tlsld_got.offset)
8473 tls_m = TLS_LD;
8474 else if (h == NULL
8475 || !h->def_dynamic)
8476 tls_m &= ~TLS_LD;
8477
8478 /* We might have multiple got entries for this sym.
8479 Initialize them all. */
8480 do
8481 {
8482 int tls_ty = 0;
8483
8484 if ((tls_m & TLS_LD) != 0)
8485 {
8486 tls_ty = TLS_TLS | TLS_LD;
8487 tls_m &= ~TLS_LD;
8488 }
8489 else if ((tls_m & TLS_GD) != 0)
8490 {
8491 tls_ty = TLS_TLS | TLS_GD;
8492 tls_m &= ~TLS_GD;
8493 }
8494 else if ((tls_m & TLS_DTPREL) != 0)
8495 {
8496 tls_ty = TLS_TLS | TLS_DTPREL;
8497 tls_m &= ~TLS_DTPREL;
8498 }
8499 else if ((tls_m & (TLS_TPREL | TLS_TPRELGD)) != 0)
8500 {
8501 tls_ty = TLS_TLS | TLS_TPREL;
8502 tls_m = 0;
8503 }
8504
8505 /* Generate relocs for the dynamic linker. */
8506 if (indx != 0
8507 || (bfd_link_pic (info)
8508 && (h == NULL
8509 || !UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)
8510 || offp == &htab->tlsld_got.offset)
8511 && !(tls_ty == (TLS_TLS | TLS_TPREL)
8512 && bfd_link_executable (info)
8513 && SYMBOL_REFERENCES_LOCAL (info, h))))
8514 {
8515 asection *rsec = htab->elf.srelgot;
8516 bfd_byte * loc;
8517
8518 if (ifunc != NULL)
8519 {
8520 rsec = htab->elf.irelplt;
8521 if (indx == 0)
8522 htab->local_ifunc_resolver = 1;
8523 else if (is_static_defined (h))
8524 htab->maybe_local_ifunc_resolver = 1;
8525 }
8526 outrel.r_offset = (htab->elf.sgot->output_section->vma
8527 + htab->elf.sgot->output_offset
8528 + off);
8529 outrel.r_addend = 0;
8530 if (tls_ty & (TLS_LD | TLS_GD))
8531 {
8532 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPMOD32);
8533 if (tls_ty == (TLS_TLS | TLS_GD))
8534 {
8535 loc = rsec->contents;
8536 loc += (rsec->reloc_count++
8537 * sizeof (Elf32_External_Rela));
8538 bfd_elf32_swap_reloca_out (output_bfd,
8539 &outrel, loc);
8540 outrel.r_offset += 4;
8541 outrel.r_info
8542 = ELF32_R_INFO (indx, R_PPC_DTPREL32);
8543 }
8544 }
8545 else if (tls_ty == (TLS_TLS | TLS_DTPREL))
8546 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPREL32);
8547 else if (tls_ty == (TLS_TLS | TLS_TPREL))
8548 outrel.r_info = ELF32_R_INFO (indx, R_PPC_TPREL32);
8549 else if (indx != 0)
8550 outrel.r_info = ELF32_R_INFO (indx, R_PPC_GLOB_DAT);
8551 else if (ifunc != NULL)
8552 outrel.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
8553 else
8554 outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
8555 if (indx == 0 && tls_ty != (TLS_TLS | TLS_LD))
8556 {
8557 outrel.r_addend += relocation;
8558 if (tls_ty & (TLS_GD | TLS_DTPREL | TLS_TPREL))
8559 {
8560 if (htab->elf.tls_sec == NULL)
8561 outrel.r_addend = 0;
8562 else
8563 outrel.r_addend -= htab->elf.tls_sec->vma;
8564 }
8565 }
8566 loc = rsec->contents;
8567 loc += (rsec->reloc_count++
8568 * sizeof (Elf32_External_Rela));
8569 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
8570 }
8571
8572 /* Init the .got section contents if we're not
8573 emitting a reloc. */
8574 else
8575 {
8576 bfd_vma value = relocation;
8577
8578 if (tls_ty != 0)
8579 {
8580 if (htab->elf.tls_sec == NULL)
8581 value = 0;
8582 else
8583 {
8584 if (tls_ty & TLS_LD)
8585 value = 0;
8586 else
8587 value -= htab->elf.tls_sec->vma + DTP_OFFSET;
8588 if (tls_ty & TLS_TPREL)
8589 value += DTP_OFFSET - TP_OFFSET;
8590 }
8591
8592 if (tls_ty & (TLS_LD | TLS_GD))
8593 {
8594 bfd_put_32 (input_bfd, value,
8595 htab->elf.sgot->contents + off + 4);
8596 value = 1;
8597 }
8598 }
8599 bfd_put_32 (input_bfd, value,
8600 htab->elf.sgot->contents + off);
8601 }
8602
8603 off += 4;
8604 if (tls_ty & (TLS_LD | TLS_GD))
8605 off += 4;
8606 }
8607 while (tls_m != 0);
8608
8609 off = *offp;
8610 *offp = off | 1;
8611 }
8612
8613 if (off >= (bfd_vma) -2)
8614 abort ();
8615
8616 if ((tls_type & TLS_TLS) != 0)
8617 {
8618 if (tls_type != (TLS_TLS | TLS_LD))
8619 {
8620 if ((tls_mask & TLS_LD) != 0
8621 && !(h == NULL
8622 || !h->def_dynamic))
8623 off += 8;
8624 if (tls_type != (TLS_TLS | TLS_GD))
8625 {
8626 if ((tls_mask & TLS_GD) != 0)
8627 off += 8;
8628 if (tls_type != (TLS_TLS | TLS_DTPREL))
8629 {
8630 if ((tls_mask & TLS_DTPREL) != 0)
8631 off += 4;
8632 }
8633 }
8634 }
8635 }
8636
8637 /* If here for a picfixup, we're done. */
8638 if (r_type != ELF32_R_TYPE (rel->r_info))
8639 goto copy_reloc;
8640
8641 relocation = (htab->elf.sgot->output_section->vma
8642 + htab->elf.sgot->output_offset
8643 + off
8644 - SYM_VAL (htab->elf.hgot));
8645
8646 /* Addends on got relocations don't make much sense.
8647 x+off@got is actually x@got+off, and since the got is
8648 generated by a hash table traversal, the value in the
8649 got at entry m+n bears little relation to the entry m. */
8650 if (addend != 0)
8651 info->callbacks->einfo
8652 /* xgettext:c-format */
8653 (_("%H: non-zero addend on %s reloc against `%s'\n"),
8654 input_bfd, input_section, rel->r_offset,
8655 howto->name,
8656 sym_name);
8657 }
8658 break;
8659
8660 /* Relocations that need no special processing. */
8661 case R_PPC_LOCAL24PC:
8662 /* It makes no sense to point a local relocation
8663 at a symbol not in this object. */
8664 if (unresolved_reloc)
8665 {
8666 (*info->callbacks->undefined_symbol) (info,
8667 h->root.root.string,
8668 input_bfd,
8669 input_section,
8670 rel->r_offset,
8671 TRUE);
8672 goto copy_reloc;
8673 }
8674 if (h != NULL && h->type == STT_GNU_IFUNC && bfd_link_pic (info))
8675 {
8676 /* @local on an ifunc does not really make sense since
8677 the ifunc resolver can take you anywhere. More
8678 seriously, calls to ifuncs must go through a plt call
8679 stub, and for pic the plt call stubs uses r30 to
8680 access the PLT. The problem is that a call that is
8681 local won't have the +32k reloc addend trick marking
8682 -fPIC code, so the linker won't know whether r30 is
8683 _GLOBAL_OFFSET_TABLE_ or pointing into a .got2 section. */
8684 /* xgettext:c-format */
8685 info->callbacks->einfo (_("%X%H: @local call to ifunc %s\n"),
8686 input_bfd, input_section, rel->r_offset,
8687 h->root.root.string);
8688 }
8689 break;
8690
8691 case R_PPC_DTPREL16:
8692 case R_PPC_DTPREL16_LO:
8693 case R_PPC_DTPREL16_HI:
8694 case R_PPC_DTPREL16_HA:
8695 if (htab->elf.tls_sec != NULL)
8696 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
8697 break;
8698
8699 /* Relocations that may need to be propagated if this is a shared
8700 object. */
8701 case R_PPC_TPREL16:
8702 case R_PPC_TPREL16_LO:
8703 case R_PPC_TPREL16_HI:
8704 case R_PPC_TPREL16_HA:
8705 if (h != NULL
8706 && h->root.type == bfd_link_hash_undefweak
8707 && h->dynindx == -1)
8708 {
8709 /* Make this relocation against an undefined weak symbol
8710 resolve to zero. This is really just a tweak, since
8711 code using weak externs ought to check that they are
8712 defined before using them. */
8713 bfd_byte *p = contents + rel->r_offset - d_offset;
8714 unsigned int insn = bfd_get_32 (input_bfd, p);
8715 insn = _bfd_elf_ppc_at_tprel_transform (insn, 2);
8716 if (insn != 0)
8717 bfd_put_32 (input_bfd, insn, p);
8718 break;
8719 }
8720 if (htab->elf.tls_sec != NULL)
8721 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
8722 /* The TPREL16 relocs shouldn't really be used in shared
8723 libs or with non-local symbols as that will result in
8724 DT_TEXTREL being set, but support them anyway. */
8725 goto dodyn;
8726
8727 case R_PPC_TPREL32:
8728 if (htab->elf.tls_sec != NULL)
8729 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
8730 goto dodyn;
8731
8732 case R_PPC_DTPREL32:
8733 if (htab->elf.tls_sec != NULL)
8734 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
8735 goto dodyn;
8736
8737 case R_PPC_DTPMOD32:
8738 relocation = 1;
8739 addend = 0;
8740 goto dodyn;
8741
8742 case R_PPC_REL16:
8743 case R_PPC_REL16_LO:
8744 case R_PPC_REL16_HI:
8745 case R_PPC_REL16_HA:
8746 case R_PPC_REL16DX_HA:
8747 break;
8748
8749 case R_PPC_REL32:
8750 if (h == NULL || h == htab->elf.hgot)
8751 break;
8752 /* fall through */
8753
8754 case R_PPC_ADDR32:
8755 case R_PPC_ADDR16:
8756 case R_PPC_ADDR16_LO:
8757 case R_PPC_ADDR16_HI:
8758 case R_PPC_ADDR16_HA:
8759 case R_PPC_UADDR32:
8760 case R_PPC_UADDR16:
8761 goto dodyn;
8762
8763 case R_PPC_VLE_REL8:
8764 case R_PPC_VLE_REL15:
8765 case R_PPC_VLE_REL24:
8766 case R_PPC_REL24:
8767 case R_PPC_REL14:
8768 case R_PPC_REL14_BRTAKEN:
8769 case R_PPC_REL14_BRNTAKEN:
8770 /* If these relocations are not to a named symbol, they can be
8771 handled right here, no need to bother the dynamic linker. */
8772 if (SYMBOL_CALLS_LOCAL (info, h)
8773 || h == htab->elf.hgot)
8774 break;
8775 /* fall through */
8776
8777 case R_PPC_ADDR24:
8778 case R_PPC_ADDR14:
8779 case R_PPC_ADDR14_BRTAKEN:
8780 case R_PPC_ADDR14_BRNTAKEN:
8781 if (h != NULL && !bfd_link_pic (info))
8782 break;
8783 /* fall through */
8784
8785 dodyn:
8786 if ((input_section->flags & SEC_ALLOC) == 0
8787 || is_vxworks_tls)
8788 break;
8789
8790 if (bfd_link_pic (info)
8791 ? ((h == NULL
8792 || ppc_elf_hash_entry (h)->dyn_relocs != NULL)
8793 && ((h != NULL && pc_dynrelocs (h))
8794 || must_be_dyn_reloc (info, r_type)))
8795 : (h != NULL
8796 && ppc_elf_hash_entry (h)->dyn_relocs != NULL))
8797 {
8798 int skip;
8799 bfd_byte *loc;
8800 asection *sreloc;
8801 long indx = 0;
8802
8803 #ifdef DEBUG
8804 fprintf (stderr, "ppc_elf_relocate_section needs to "
8805 "create relocation for %s\n",
8806 (h && h->root.root.string
8807 ? h->root.root.string : "<unknown>"));
8808 #endif
8809
8810 /* When generating a shared object, these relocations
8811 are copied into the output file to be resolved at run
8812 time. */
8813 skip = 0;
8814 outrel.r_offset = _bfd_elf_section_offset (output_bfd, info,
8815 input_section,
8816 rel->r_offset);
8817 if (outrel.r_offset == (bfd_vma) -1
8818 || outrel.r_offset == (bfd_vma) -2)
8819 skip = (int) outrel.r_offset;
8820 outrel.r_offset += (input_section->output_section->vma
8821 + input_section->output_offset);
8822
8823 if (skip)
8824 memset (&outrel, 0, sizeof outrel);
8825 else if (!SYMBOL_REFERENCES_LOCAL (info, h))
8826 {
8827 indx = h->dynindx;
8828 BFD_ASSERT (indx != -1);
8829 unresolved_reloc = FALSE;
8830 outrel.r_info = ELF32_R_INFO (indx, r_type);
8831 outrel.r_addend = rel->r_addend;
8832 }
8833 else
8834 {
8835 outrel.r_addend = relocation + rel->r_addend;
8836
8837 if (r_type != R_PPC_ADDR32)
8838 {
8839 if (ifunc != NULL)
8840 {
8841 /* If we get here when building a static
8842 executable, then the libc startup function
8843 responsible for applying indirect function
8844 relocations is going to complain about
8845 the reloc type.
8846 If we get here when building a dynamic
8847 executable, it will be because we have
8848 a text relocation. The dynamic loader
8849 will set the text segment writable and
8850 non-executable to apply text relocations.
8851 So we'll segfault when trying to run the
8852 indirection function to resolve the reloc. */
8853 info->callbacks->einfo
8854 /* xgettext:c-format */
8855 (_("%H: relocation %s for indirect "
8856 "function %s unsupported\n"),
8857 input_bfd, input_section, rel->r_offset,
8858 howto->name,
8859 sym_name);
8860 ret = FALSE;
8861 }
8862 else if (r_symndx == STN_UNDEF || bfd_is_abs_section (sec))
8863 ;
8864 else if (sec == NULL || sec->owner == NULL)
8865 {
8866 bfd_set_error (bfd_error_bad_value);
8867 ret = FALSE;
8868 }
8869 else
8870 {
8871 asection *osec;
8872
8873 /* We are turning this relocation into one
8874 against a section symbol. It would be
8875 proper to subtract the symbol's value,
8876 osec->vma, from the emitted reloc addend,
8877 but ld.so expects buggy relocs.
8878 FIXME: Why not always use a zero index? */
8879 osec = sec->output_section;
8880 indx = elf_section_data (osec)->dynindx;
8881 if (indx == 0)
8882 {
8883 osec = htab->elf.text_index_section;
8884 indx = elf_section_data (osec)->dynindx;
8885 }
8886 BFD_ASSERT (indx != 0);
8887 #ifdef DEBUG
8888 if (indx == 0)
8889 printf ("indx=%ld section=%s flags=%08x name=%s\n",
8890 indx, osec->name, osec->flags,
8891 h->root.root.string);
8892 #endif
8893 }
8894
8895 outrel.r_info = ELF32_R_INFO (indx, r_type);
8896 }
8897 else if (ifunc != NULL)
8898 outrel.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
8899 else
8900 outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
8901 }
8902
8903 sreloc = elf_section_data (input_section)->sreloc;
8904 if (ifunc)
8905 {
8906 sreloc = htab->elf.irelplt;
8907 if (indx == 0)
8908 htab->local_ifunc_resolver = 1;
8909 else if (is_static_defined (h))
8910 htab->maybe_local_ifunc_resolver = 1;
8911 }
8912 if (sreloc == NULL)
8913 return FALSE;
8914
8915 loc = sreloc->contents;
8916 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
8917 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
8918
8919 if (skip == -1)
8920 goto copy_reloc;
8921
8922 /* This reloc will be computed at runtime. Clear the memory
8923 so that it contains a predictable value for prelink. */
8924 if (!skip)
8925 {
8926 relocation = howto->pc_relative ? outrel.r_offset : 0;
8927 addend = 0;
8928 break;
8929 }
8930 }
8931 break;
8932
8933 case R_PPC_RELAX_PLT:
8934 case R_PPC_RELAX_PLTREL24:
8935 if (h != NULL)
8936 {
8937 struct plt_entry *ent;
8938 bfd_vma got2_addend = 0;
8939
8940 if (r_type == R_PPC_RELAX_PLTREL24)
8941 {
8942 if (bfd_link_pic (info))
8943 got2_addend = addend;
8944 addend = 0;
8945 }
8946 ent = find_plt_ent (&h->plt.plist, got2, got2_addend);
8947 if (htab->plt_type == PLT_NEW)
8948 relocation = (htab->glink->output_section->vma
8949 + htab->glink->output_offset
8950 + ent->glink_offset);
8951 else
8952 relocation = (htab->elf.splt->output_section->vma
8953 + htab->elf.splt->output_offset
8954 + ent->plt.offset);
8955 }
8956 /* Fall through. */
8957
8958 case R_PPC_RELAX:
8959 {
8960 const int *stub;
8961 size_t size;
8962 size_t insn_offset = rel->r_offset;
8963 unsigned int insn;
8964
8965 if (bfd_link_pic (info))
8966 {
8967 relocation -= (input_section->output_section->vma
8968 + input_section->output_offset
8969 + rel->r_offset - 4);
8970 stub = shared_stub_entry;
8971 bfd_put_32 (input_bfd, stub[0], contents + insn_offset - 12);
8972 bfd_put_32 (input_bfd, stub[1], contents + insn_offset - 8);
8973 bfd_put_32 (input_bfd, stub[2], contents + insn_offset - 4);
8974 stub += 3;
8975 size = ARRAY_SIZE (shared_stub_entry) - 3;
8976 }
8977 else
8978 {
8979 stub = stub_entry;
8980 size = ARRAY_SIZE (stub_entry);
8981 }
8982 --size;
8983
8984 relocation += addend;
8985 if (bfd_link_relocatable (info))
8986 relocation = 0;
8987
8988 /* First insn is HA, second is LO. */
8989 insn = *stub++;
8990 insn |= ((relocation + 0x8000) >> 16) & 0xffff;
8991 bfd_put_32 (input_bfd, insn, contents + insn_offset);
8992 insn_offset += 4;
8993
8994 insn = *stub++;
8995 insn |= relocation & 0xffff;
8996 bfd_put_32 (input_bfd, insn, contents + insn_offset);
8997 insn_offset += 4;
8998 size -= 2;
8999
9000 while (size != 0)
9001 {
9002 insn = *stub++;
9003 --size;
9004 bfd_put_32 (input_bfd, insn, contents + insn_offset);
9005 insn_offset += 4;
9006 }
9007 output_bctr (htab, input_bfd, contents + insn_offset);
9008
9009 /* Rewrite the reloc and convert one of the trailing nop
9010 relocs to describe this relocation. */
9011 BFD_ASSERT (ELF32_R_TYPE (relend[-1].r_info) == R_PPC_NONE);
9012 /* The relocs are at the bottom 2 bytes */
9013 wrel->r_offset = rel->r_offset + d_offset;
9014 wrel->r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_HA);
9015 wrel->r_addend = rel->r_addend;
9016 memmove (wrel + 1, wrel, (relend - wrel - 1) * sizeof (*wrel));
9017 wrel++, rel++;
9018 wrel->r_offset += 4;
9019 wrel->r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_LO);
9020 }
9021 continue;
9022
9023 /* Indirect .sdata relocation. */
9024 case R_PPC_EMB_SDAI16:
9025 BFD_ASSERT (htab->sdata[0].section != NULL);
9026 if (!is_static_defined (htab->sdata[0].sym))
9027 {
9028 unresolved_reloc = TRUE;
9029 break;
9030 }
9031 relocation
9032 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[0],
9033 h, relocation, rel);
9034 addend = 0;
9035 break;
9036
9037 /* Indirect .sdata2 relocation. */
9038 case R_PPC_EMB_SDA2I16:
9039 BFD_ASSERT (htab->sdata[1].section != NULL);
9040 if (!is_static_defined (htab->sdata[1].sym))
9041 {
9042 unresolved_reloc = TRUE;
9043 break;
9044 }
9045 relocation
9046 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[1],
9047 h, relocation, rel);
9048 addend = 0;
9049 break;
9050
9051 /* Handle the TOC16 reloc. We want to use the offset within the .got
9052 section, not the actual VMA. This is appropriate when generating
9053 an embedded ELF object, for which the .got section acts like the
9054 AIX .toc section. */
9055 case R_PPC_TOC16: /* phony GOT16 relocations */
9056 if (sec == NULL || sec->output_section == NULL)
9057 {
9058 unresolved_reloc = TRUE;
9059 break;
9060 }
9061 BFD_ASSERT (strcmp (bfd_get_section_name (sec->owner, sec),
9062 ".got") == 0
9063 || strcmp (bfd_get_section_name (sec->owner, sec),
9064 ".cgot") == 0);
9065
9066 addend -= sec->output_section->vma + sec->output_offset + 0x8000;
9067 break;
9068
9069 case R_PPC_PLTREL24:
9070 if (h != NULL && ifunc == NULL)
9071 {
9072 struct plt_entry *ent;
9073
9074 ent = find_plt_ent (&h->plt.plist, got2,
9075 bfd_link_pic (info) ? addend : 0);
9076 if (ent == NULL
9077 || htab->elf.splt == NULL)
9078 {
9079 /* We didn't make a PLT entry for this symbol. This
9080 happens when statically linking PIC code, or when
9081 using -Bsymbolic. */
9082 }
9083 else
9084 {
9085 /* Relocation is to the entry for this symbol in the
9086 procedure linkage table. */
9087 unresolved_reloc = FALSE;
9088 if (htab->plt_type == PLT_NEW)
9089 relocation = (htab->glink->output_section->vma
9090 + htab->glink->output_offset
9091 + ent->glink_offset);
9092 else
9093 relocation = (htab->elf.splt->output_section->vma
9094 + htab->elf.splt->output_offset
9095 + ent->plt.offset);
9096 }
9097 }
9098
9099 /* R_PPC_PLTREL24 is rather special. If non-zero, the
9100 addend specifies the GOT pointer offset within .got2.
9101 Don't apply it to the relocation field. */
9102 addend = 0;
9103 break;
9104
9105 /* Relocate against _SDA_BASE_. */
9106 case R_PPC_SDAREL16:
9107 {
9108 const char *name;
9109 struct elf_link_hash_entry *sda = htab->sdata[0].sym;
9110
9111 if (sec == NULL
9112 || sec->output_section == NULL
9113 || !is_static_defined (sda))
9114 {
9115 unresolved_reloc = TRUE;
9116 break;
9117 }
9118 addend -= SYM_VAL (sda);
9119
9120 name = bfd_get_section_name (output_bfd, sec->output_section);
9121 if (!(strcmp (name, ".sdata") == 0
9122 || strcmp (name, ".sbss") == 0))
9123 {
9124 info->callbacks->einfo
9125 /* xgettext:c-format */
9126 (_("%P: %B: the target (%s) of a %s relocation is "
9127 "in the wrong output section (%s)\n"),
9128 input_bfd,
9129 sym_name,
9130 howto->name,
9131 name);
9132 }
9133 }
9134 break;
9135
9136 /* Relocate against _SDA2_BASE_. */
9137 case R_PPC_EMB_SDA2REL:
9138 {
9139 const char *name;
9140 struct elf_link_hash_entry *sda = htab->sdata[1].sym;
9141
9142 if (sec == NULL
9143 || sec->output_section == NULL
9144 || !is_static_defined (sda))
9145 {
9146 unresolved_reloc = TRUE;
9147 break;
9148 }
9149 addend -= SYM_VAL (sda);
9150
9151 name = bfd_get_section_name (output_bfd, sec->output_section);
9152 if (!(strcmp (name, ".sdata2") == 0
9153 || strcmp (name, ".sbss2") == 0))
9154 {
9155 info->callbacks->einfo
9156 /* xgettext:c-format */
9157 (_("%P: %B: the target (%s) of a %s relocation is "
9158 "in the wrong output section (%s)\n"),
9159 input_bfd,
9160 sym_name,
9161 howto->name,
9162 name);
9163 }
9164 }
9165 break;
9166
9167 case R_PPC_VLE_LO16A:
9168 relocation = relocation + addend;
9169 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9170 contents + rel->r_offset, relocation,
9171 split16a_type, htab->params->vle_reloc_fixup);
9172 goto copy_reloc;
9173
9174 case R_PPC_VLE_LO16D:
9175 relocation = relocation + addend;
9176 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9177 contents + rel->r_offset, relocation,
9178 split16d_type, htab->params->vle_reloc_fixup);
9179 goto copy_reloc;
9180
9181 case R_PPC_VLE_HI16A:
9182 relocation = (relocation + addend) >> 16;
9183 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9184 contents + rel->r_offset, relocation,
9185 split16a_type, htab->params->vle_reloc_fixup);
9186 goto copy_reloc;
9187
9188 case R_PPC_VLE_HI16D:
9189 relocation = (relocation + addend) >> 16;
9190 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9191 contents + rel->r_offset, relocation,
9192 split16d_type, htab->params->vle_reloc_fixup);
9193 goto copy_reloc;
9194
9195 case R_PPC_VLE_HA16A:
9196 relocation = (relocation + addend + 0x8000) >> 16;
9197 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9198 contents + rel->r_offset, relocation,
9199 split16a_type, htab->params->vle_reloc_fixup);
9200 goto copy_reloc;
9201
9202 case R_PPC_VLE_HA16D:
9203 relocation = (relocation + addend + 0x8000) >> 16;
9204 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9205 contents + rel->r_offset, relocation,
9206 split16d_type, htab->params->vle_reloc_fixup);
9207 goto copy_reloc;
9208
9209 /* Relocate against either _SDA_BASE_, _SDA2_BASE_, or 0. */
9210 case R_PPC_EMB_SDA21:
9211 case R_PPC_VLE_SDA21:
9212 case R_PPC_EMB_RELSDA:
9213 case R_PPC_VLE_SDA21_LO:
9214 {
9215 const char *name;
9216 int reg;
9217 unsigned int insn;
9218 struct elf_link_hash_entry *sda = NULL;
9219
9220 if (sec == NULL || sec->output_section == NULL)
9221 {
9222 unresolved_reloc = TRUE;
9223 break;
9224 }
9225
9226 name = bfd_get_section_name (output_bfd, sec->output_section);
9227 if (strcmp (name, ".sdata") == 0
9228 || strcmp (name, ".sbss") == 0)
9229 {
9230 reg = 13;
9231 sda = htab->sdata[0].sym;
9232 }
9233 else if (strcmp (name, ".sdata2") == 0
9234 || strcmp (name, ".sbss2") == 0)
9235 {
9236 reg = 2;
9237 sda = htab->sdata[1].sym;
9238 }
9239 else if (strcmp (name, ".PPC.EMB.sdata0") == 0
9240 || strcmp (name, ".PPC.EMB.sbss0") == 0)
9241 {
9242 reg = 0;
9243 }
9244 else
9245 {
9246 info->callbacks->einfo
9247 /* xgettext:c-format */
9248 (_("%P: %B: the target (%s) of a %s relocation is "
9249 "in the wrong output section (%s)\n"),
9250 input_bfd,
9251 sym_name,
9252 howto->name,
9253 name);
9254
9255 bfd_set_error (bfd_error_bad_value);
9256 ret = FALSE;
9257 goto copy_reloc;
9258 }
9259
9260 if (sda != NULL)
9261 {
9262 if (!is_static_defined (sda))
9263 {
9264 unresolved_reloc = TRUE;
9265 break;
9266 }
9267 addend -= SYM_VAL (sda);
9268 }
9269
9270 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
9271 if (reg == 0
9272 && (r_type == R_PPC_VLE_SDA21
9273 || r_type == R_PPC_VLE_SDA21_LO))
9274 {
9275 relocation = relocation + addend;
9276 addend = 0;
9277
9278 /* Force e_li insn, keeping RT from original insn. */
9279 insn &= 0x1f << 21;
9280 insn |= 28u << 26;
9281
9282 /* We have an li20 field, bits 17..20, 11..15, 21..31. */
9283 /* Top 4 bits of value to 17..20. */
9284 insn |= (relocation & 0xf0000) >> 5;
9285 /* Next 5 bits of the value to 11..15. */
9286 insn |= (relocation & 0xf800) << 5;
9287 /* And the final 11 bits of the value to bits 21 to 31. */
9288 insn |= relocation & 0x7ff;
9289
9290 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
9291
9292 if (r_type == R_PPC_VLE_SDA21
9293 && ((relocation + 0x80000) & 0xffffffff) > 0x100000)
9294 goto overflow;
9295 goto copy_reloc;
9296 }
9297 else if (r_type == R_PPC_EMB_SDA21
9298 || r_type == R_PPC_VLE_SDA21
9299 || r_type == R_PPC_VLE_SDA21_LO)
9300 {
9301 /* Fill in register field. */
9302 insn = (insn & ~RA_REGISTER_MASK) | (reg << RA_REGISTER_SHIFT);
9303 }
9304 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
9305 }
9306 break;
9307
9308 case R_PPC_VLE_SDAREL_LO16A:
9309 case R_PPC_VLE_SDAREL_LO16D:
9310 case R_PPC_VLE_SDAREL_HI16A:
9311 case R_PPC_VLE_SDAREL_HI16D:
9312 case R_PPC_VLE_SDAREL_HA16A:
9313 case R_PPC_VLE_SDAREL_HA16D:
9314 {
9315 bfd_vma value;
9316 const char *name;
9317 struct elf_link_hash_entry *sda = NULL;
9318
9319 if (sec == NULL || sec->output_section == NULL)
9320 {
9321 unresolved_reloc = TRUE;
9322 break;
9323 }
9324
9325 name = bfd_get_section_name (output_bfd, sec->output_section);
9326 if (strcmp (name, ".sdata") == 0
9327 || strcmp (name, ".sbss") == 0)
9328 sda = htab->sdata[0].sym;
9329 else if (strcmp (name, ".sdata2") == 0
9330 || strcmp (name, ".sbss2") == 0)
9331 sda = htab->sdata[1].sym;
9332 else
9333 {
9334 _bfd_error_handler
9335 /* xgettext:c-format */
9336 (_("%B: the target (%s) of a %s relocation is "
9337 "in the wrong output section (%s)"),
9338 input_bfd,
9339 sym_name,
9340 howto->name,
9341 name);
9342
9343 bfd_set_error (bfd_error_bad_value);
9344 ret = FALSE;
9345 goto copy_reloc;
9346 }
9347
9348 if (sda == NULL || !is_static_defined (sda))
9349 {
9350 unresolved_reloc = TRUE;
9351 break;
9352 }
9353 value = relocation + addend - SYM_VAL (sda);
9354
9355 if (r_type == R_PPC_VLE_SDAREL_LO16A)
9356 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9357 contents + rel->r_offset, value,
9358 split16a_type,
9359 htab->params->vle_reloc_fixup);
9360 else if (r_type == R_PPC_VLE_SDAREL_LO16D)
9361 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9362 contents + rel->r_offset, value,
9363 split16d_type,
9364 htab->params->vle_reloc_fixup);
9365 else if (r_type == R_PPC_VLE_SDAREL_HI16A)
9366 {
9367 value = value >> 16;
9368 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9369 contents + rel->r_offset, value,
9370 split16a_type,
9371 htab->params->vle_reloc_fixup);
9372 }
9373 else if (r_type == R_PPC_VLE_SDAREL_HI16D)
9374 {
9375 value = value >> 16;
9376 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9377 contents + rel->r_offset, value,
9378 split16d_type,
9379 htab->params->vle_reloc_fixup);
9380 }
9381 else if (r_type == R_PPC_VLE_SDAREL_HA16A)
9382 {
9383 value = (value + 0x8000) >> 16;
9384 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9385 contents + rel->r_offset, value,
9386 split16a_type,
9387 htab->params->vle_reloc_fixup);
9388 }
9389 else if (r_type == R_PPC_VLE_SDAREL_HA16D)
9390 {
9391 value = (value + 0x8000) >> 16;
9392 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9393 contents + rel->r_offset, value,
9394 split16d_type,
9395 htab->params->vle_reloc_fixup);
9396 }
9397 }
9398 goto copy_reloc;
9399
9400 case R_PPC_VLE_ADDR20:
9401 ppc_elf_vle_split20 (output_bfd, contents + rel->r_offset, relocation);
9402 continue;
9403
9404 /* Relocate against the beginning of the section. */
9405 case R_PPC_SECTOFF:
9406 case R_PPC_SECTOFF_LO:
9407 case R_PPC_SECTOFF_HI:
9408 case R_PPC_SECTOFF_HA:
9409 if (sec == NULL || sec->output_section == NULL)
9410 {
9411 unresolved_reloc = TRUE;
9412 break;
9413 }
9414 addend -= sec->output_section->vma;
9415 break;
9416
9417 /* Negative relocations. */
9418 case R_PPC_EMB_NADDR32:
9419 case R_PPC_EMB_NADDR16:
9420 case R_PPC_EMB_NADDR16_LO:
9421 case R_PPC_EMB_NADDR16_HI:
9422 case R_PPC_EMB_NADDR16_HA:
9423 addend -= 2 * relocation;
9424 break;
9425
9426 case R_PPC_COPY:
9427 case R_PPC_GLOB_DAT:
9428 case R_PPC_JMP_SLOT:
9429 case R_PPC_RELATIVE:
9430 case R_PPC_IRELATIVE:
9431 case R_PPC_PLT32:
9432 case R_PPC_PLTREL32:
9433 case R_PPC_PLT16_LO:
9434 case R_PPC_PLT16_HI:
9435 case R_PPC_PLT16_HA:
9436 case R_PPC_ADDR30:
9437 case R_PPC_EMB_RELSEC16:
9438 case R_PPC_EMB_RELST_LO:
9439 case R_PPC_EMB_RELST_HI:
9440 case R_PPC_EMB_RELST_HA:
9441 case R_PPC_EMB_BIT_FLD:
9442 info->callbacks->einfo
9443 /* xgettext:c-format */
9444 (_("%P: %B: relocation %s is not yet supported for symbol %s\n"),
9445 input_bfd,
9446 howto->name,
9447 sym_name);
9448
9449 bfd_set_error (bfd_error_invalid_operation);
9450 ret = FALSE;
9451 goto copy_reloc;
9452 }
9453
9454 /* Do any further special processing. */
9455 switch (r_type)
9456 {
9457 default:
9458 break;
9459
9460 case R_PPC_ADDR16_HA:
9461 case R_PPC_REL16_HA:
9462 case R_PPC_REL16DX_HA:
9463 case R_PPC_SECTOFF_HA:
9464 case R_PPC_TPREL16_HA:
9465 case R_PPC_DTPREL16_HA:
9466 case R_PPC_EMB_NADDR16_HA:
9467 case R_PPC_EMB_RELST_HA:
9468 /* It's just possible that this symbol is a weak symbol
9469 that's not actually defined anywhere. In that case,
9470 'sec' would be NULL, and we should leave the symbol
9471 alone (it will be set to zero elsewhere in the link). */
9472 if (sec == NULL)
9473 break;
9474 /* Fall through. */
9475
9476 case R_PPC_PLT16_HA:
9477 case R_PPC_GOT16_HA:
9478 case R_PPC_GOT_TLSGD16_HA:
9479 case R_PPC_GOT_TLSLD16_HA:
9480 case R_PPC_GOT_TPREL16_HA:
9481 case R_PPC_GOT_DTPREL16_HA:
9482 /* Add 0x10000 if sign bit in 0:15 is set.
9483 Bits 0:15 are not used. */
9484 addend += 0x8000;
9485 break;
9486
9487 case R_PPC_ADDR16:
9488 case R_PPC_ADDR16_LO:
9489 case R_PPC_GOT16:
9490 case R_PPC_GOT16_LO:
9491 case R_PPC_SDAREL16:
9492 case R_PPC_SECTOFF:
9493 case R_PPC_SECTOFF_LO:
9494 case R_PPC_DTPREL16:
9495 case R_PPC_DTPREL16_LO:
9496 case R_PPC_TPREL16:
9497 case R_PPC_TPREL16_LO:
9498 case R_PPC_GOT_TLSGD16:
9499 case R_PPC_GOT_TLSGD16_LO:
9500 case R_PPC_GOT_TLSLD16:
9501 case R_PPC_GOT_TLSLD16_LO:
9502 case R_PPC_GOT_DTPREL16:
9503 case R_PPC_GOT_DTPREL16_LO:
9504 case R_PPC_GOT_TPREL16:
9505 case R_PPC_GOT_TPREL16_LO:
9506 {
9507 /* The 32-bit ABI lacks proper relocations to deal with
9508 certain 64-bit instructions. Prevent damage to bits
9509 that make up part of the insn opcode. */
9510 unsigned int insn, mask, lobit;
9511
9512 insn = bfd_get_32 (input_bfd,
9513 contents + rel->r_offset - d_offset);
9514 mask = 0;
9515 if (is_insn_ds_form (insn))
9516 mask = 3;
9517 else if (is_insn_dq_form (insn))
9518 mask = 15;
9519 else
9520 break;
9521 relocation += addend;
9522 addend = insn & mask;
9523 lobit = mask & relocation;
9524 if (lobit != 0)
9525 {
9526 relocation ^= lobit;
9527 info->callbacks->einfo
9528 /* xgettext:c-format */
9529 (_("%H: error: %s against `%s' not a multiple of %u\n"),
9530 input_bfd, input_section, rel->r_offset,
9531 howto->name, sym_name, mask + 1);
9532 bfd_set_error (bfd_error_bad_value);
9533 ret = FALSE;
9534 }
9535 }
9536 break;
9537 }
9538
9539 #ifdef DEBUG
9540 fprintf (stderr, "\ttype = %s (%d), name = %s, symbol index = %ld, "
9541 "offset = %ld, addend = %ld\n",
9542 howto->name,
9543 (int) r_type,
9544 sym_name,
9545 r_symndx,
9546 (long) rel->r_offset,
9547 (long) addend);
9548 #endif
9549
9550 if (unresolved_reloc
9551 && !((input_section->flags & SEC_DEBUGGING) != 0
9552 && h->def_dynamic)
9553 && _bfd_elf_section_offset (output_bfd, info, input_section,
9554 rel->r_offset) != (bfd_vma) -1)
9555 {
9556 info->callbacks->einfo
9557 /* xgettext:c-format */
9558 (_("%H: unresolvable %s relocation against symbol `%s'\n"),
9559 input_bfd, input_section, rel->r_offset,
9560 howto->name,
9561 sym_name);
9562 ret = FALSE;
9563 }
9564
9565 /* 16-bit fields in insns mostly have signed values, but a
9566 few insns have 16-bit unsigned values. Really, we should
9567 have different reloc types. */
9568 if (howto->complain_on_overflow != complain_overflow_dont
9569 && howto->dst_mask == 0xffff
9570 && (input_section->flags & SEC_CODE) != 0)
9571 {
9572 enum complain_overflow complain = complain_overflow_signed;
9573
9574 if ((elf_section_flags (input_section) & SHF_PPC_VLE) == 0)
9575 {
9576 unsigned int insn;
9577
9578 insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
9579 if ((insn & (0x3f << 26)) == 10u << 26 /* cmpli */)
9580 complain = complain_overflow_bitfield;
9581 else if ((insn & (0x3f << 26)) == 28u << 26 /* andi */
9582 || (insn & (0x3f << 26)) == 24u << 26 /* ori */
9583 || (insn & (0x3f << 26)) == 26u << 26 /* xori */)
9584 complain = complain_overflow_unsigned;
9585 }
9586 if (howto->complain_on_overflow != complain)
9587 {
9588 alt_howto = *howto;
9589 alt_howto.complain_on_overflow = complain;
9590 howto = &alt_howto;
9591 }
9592 }
9593
9594 if (r_type == R_PPC_REL16DX_HA)
9595 {
9596 /* Split field reloc isn't handled by _bfd_final_link_relocate. */
9597 if (rel->r_offset + 4 > input_section->size)
9598 r = bfd_reloc_outofrange;
9599 else
9600 {
9601 unsigned int insn;
9602
9603 relocation += addend;
9604 relocation -= (rel->r_offset
9605 + input_section->output_offset
9606 + input_section->output_section->vma);
9607 relocation >>= 16;
9608 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
9609 insn &= ~0x1fffc1;
9610 insn |= (relocation & 0xffc1) | ((relocation & 0x3e) << 15);
9611 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
9612 r = bfd_reloc_ok;
9613 }
9614 }
9615 else
9616 r = _bfd_final_link_relocate (howto, input_bfd, input_section, contents,
9617 rel->r_offset, relocation, addend);
9618
9619 if (r != bfd_reloc_ok)
9620 {
9621 if (r == bfd_reloc_overflow)
9622 {
9623 overflow:
9624 /* On code like "if (foo) foo();" don't report overflow
9625 on a branch to zero when foo is undefined. */
9626 if (!warned
9627 && !(h != NULL
9628 && (h->root.type == bfd_link_hash_undefweak
9629 || h->root.type == bfd_link_hash_undefined)
9630 && is_branch_reloc (r_type)))
9631 info->callbacks->reloc_overflow
9632 (info, (h ? &h->root : NULL), sym_name, howto->name,
9633 rel->r_addend, input_bfd, input_section, rel->r_offset);
9634 }
9635 else
9636 {
9637 info->callbacks->einfo
9638 /* xgettext:c-format */
9639 (_("%H: %s reloc against `%s': error %d\n"),
9640 input_bfd, input_section, rel->r_offset,
9641 howto->name, sym_name, (int) r);
9642 ret = FALSE;
9643 }
9644 }
9645 copy_reloc:
9646 if (wrel != rel)
9647 *wrel = *rel;
9648 }
9649
9650 if (wrel != rel)
9651 {
9652 Elf_Internal_Shdr *rel_hdr;
9653 size_t deleted = rel - wrel;
9654
9655 rel_hdr = _bfd_elf_single_rel_hdr (input_section->output_section);
9656 rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted;
9657 if (rel_hdr->sh_size == 0)
9658 {
9659 /* It is too late to remove an empty reloc section. Leave
9660 one NONE reloc.
9661 ??? What is wrong with an empty section??? */
9662 rel_hdr->sh_size = rel_hdr->sh_entsize;
9663 deleted -= 1;
9664 wrel++;
9665 }
9666 relend = wrel;
9667 rel_hdr = _bfd_elf_single_rel_hdr (input_section);
9668 rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted;
9669 input_section->reloc_count -= deleted;
9670 }
9671
9672 #ifdef DEBUG
9673 fprintf (stderr, "\n");
9674 #endif
9675
9676 if (input_section->sec_info_type == SEC_INFO_TYPE_TARGET
9677 && input_section->size != input_section->rawsize
9678 && (strcmp (input_section->output_section->name, ".init") == 0
9679 || strcmp (input_section->output_section->name, ".fini") == 0))
9680 {
9681 /* Branch around the trampolines. */
9682 unsigned int insn = B + input_section->size - input_section->rawsize;
9683 bfd_put_32 (input_bfd, insn, contents + input_section->rawsize);
9684 }
9685
9686 if (htab->params->ppc476_workaround
9687 && input_section->sec_info_type == SEC_INFO_TYPE_TARGET
9688 && (!bfd_link_relocatable (info)
9689 || (input_section->output_section->alignment_power
9690 >= htab->params->pagesize_p2)))
9691 {
9692 bfd_vma start_addr, end_addr, addr;
9693 bfd_vma pagesize = (bfd_vma) 1 << htab->params->pagesize_p2;
9694
9695 if (relax_info->workaround_size != 0)
9696 {
9697 bfd_byte *p;
9698 unsigned int n;
9699 bfd_byte fill[4];
9700
9701 bfd_put_32 (input_bfd, BA, fill);
9702 p = contents + input_section->size - relax_info->workaround_size;
9703 n = relax_info->workaround_size >> 2;
9704 while (n--)
9705 {
9706 memcpy (p, fill, 4);
9707 p += 4;
9708 }
9709 }
9710
9711 /* The idea is: Replace the last instruction on a page with a
9712 branch to a patch area. Put the insn there followed by a
9713 branch back to the next page. Complicated a little by
9714 needing to handle moved conditional branches, and by not
9715 wanting to touch data-in-text. */
9716
9717 start_addr = (input_section->output_section->vma
9718 + input_section->output_offset);
9719 end_addr = (start_addr + input_section->size
9720 - relax_info->workaround_size);
9721 for (addr = ((start_addr & -pagesize) + pagesize - 4);
9722 addr < end_addr;
9723 addr += pagesize)
9724 {
9725 bfd_vma offset = addr - start_addr;
9726 Elf_Internal_Rela *lo, *hi;
9727 bfd_boolean is_data;
9728 bfd_vma patch_off, patch_addr;
9729 unsigned int insn;
9730
9731 /* Do we have a data reloc at this offset? If so, leave
9732 the word alone. */
9733 is_data = FALSE;
9734 lo = relocs;
9735 hi = relend;
9736 rel = NULL;
9737 while (lo < hi)
9738 {
9739 rel = lo + (hi - lo) / 2;
9740 if (rel->r_offset < offset)
9741 lo = rel + 1;
9742 else if (rel->r_offset > offset + 3)
9743 hi = rel;
9744 else
9745 {
9746 switch (ELF32_R_TYPE (rel->r_info))
9747 {
9748 case R_PPC_ADDR32:
9749 case R_PPC_UADDR32:
9750 case R_PPC_REL32:
9751 case R_PPC_ADDR30:
9752 is_data = TRUE;
9753 break;
9754 default:
9755 break;
9756 }
9757 break;
9758 }
9759 }
9760 if (is_data)
9761 continue;
9762
9763 /* Some instructions can be left alone too. Unconditional
9764 branches, except for bcctr with BO=0x14 (bctr, bctrl),
9765 avoid the icache failure.
9766
9767 The problem occurs due to prefetch across a page boundary
9768 where stale instructions can be fetched from the next
9769 page, and the mechanism for flushing these bad
9770 instructions fails under certain circumstances. The
9771 unconditional branches:
9772 1) Branch: b, bl, ba, bla,
9773 2) Branch Conditional: bc, bca, bcl, bcla,
9774 3) Branch Conditional to Link Register: bclr, bclrl,
9775 where (2) and (3) have BO=0x14 making them unconditional,
9776 prevent the bad prefetch because the prefetch itself is
9777 affected by these instructions. This happens even if the
9778 instruction is not executed.
9779
9780 A bctr example:
9781 .
9782 . lis 9,new_page@ha
9783 . addi 9,9,new_page@l
9784 . mtctr 9
9785 . bctr
9786 . nop
9787 . nop
9788 . new_page:
9789 .
9790 The bctr is not predicted taken due to ctr not being
9791 ready, so prefetch continues on past the bctr into the
9792 new page which might have stale instructions. If they
9793 fail to be flushed, then they will be executed after the
9794 bctr executes. Either of the following modifications
9795 prevent the bad prefetch from happening in the first
9796 place:
9797 .
9798 . lis 9,new_page@ha lis 9,new_page@ha
9799 . addi 9,9,new_page@l addi 9,9,new_page@l
9800 . mtctr 9 mtctr 9
9801 . bctr bctr
9802 . nop b somewhere_else
9803 . b somewhere_else nop
9804 . new_page: new_page:
9805 . */
9806 insn = bfd_get_32 (input_bfd, contents + offset);
9807 if ((insn & (0x3f << 26)) == (18u << 26) /* b,bl,ba,bla */
9808 || ((insn & (0x3f << 26)) == (16u << 26) /* bc,bcl,bca,bcla*/
9809 && (insn & (0x14 << 21)) == (0x14 << 21)) /* with BO=0x14 */
9810 || ((insn & (0x3f << 26)) == (19u << 26)
9811 && (insn & (0x3ff << 1)) == (16u << 1) /* bclr,bclrl */
9812 && (insn & (0x14 << 21)) == (0x14 << 21)))/* with BO=0x14 */
9813 continue;
9814
9815 patch_addr = (start_addr + input_section->size
9816 - relax_info->workaround_size);
9817 patch_addr = (patch_addr + 15) & -16;
9818 patch_off = patch_addr - start_addr;
9819 bfd_put_32 (input_bfd, B + patch_off - offset, contents + offset);
9820
9821 if (rel != NULL
9822 && rel->r_offset >= offset
9823 && rel->r_offset < offset + 4)
9824 {
9825 asection *sreloc;
9826
9827 /* If the insn we are patching had a reloc, adjust the
9828 reloc r_offset so that the reloc applies to the moved
9829 location. This matters for -r and --emit-relocs. */
9830 if (rel + 1 != relend)
9831 {
9832 Elf_Internal_Rela tmp = *rel;
9833
9834 /* Keep the relocs sorted by r_offset. */
9835 memmove (rel, rel + 1, (relend - (rel + 1)) * sizeof (*rel));
9836 relend[-1] = tmp;
9837 }
9838 relend[-1].r_offset += patch_off - offset;
9839
9840 /* Adjust REL16 addends too. */
9841 switch (ELF32_R_TYPE (relend[-1].r_info))
9842 {
9843 case R_PPC_REL16:
9844 case R_PPC_REL16_LO:
9845 case R_PPC_REL16_HI:
9846 case R_PPC_REL16_HA:
9847 relend[-1].r_addend += patch_off - offset;
9848 break;
9849 default:
9850 break;
9851 }
9852
9853 /* If we are building a PIE or shared library with
9854 non-PIC objects, perhaps we had a dynamic reloc too?
9855 If so, the dynamic reloc must move with the insn. */
9856 sreloc = elf_section_data (input_section)->sreloc;
9857 if (sreloc != NULL)
9858 {
9859 Elf32_External_Rela *slo, *shi, *srelend;
9860 bfd_vma soffset;
9861
9862 slo = (Elf32_External_Rela *) sreloc->contents;
9863 shi = srelend = slo + sreloc->reloc_count;
9864 soffset = (offset + input_section->output_section->vma
9865 + input_section->output_offset);
9866 while (slo < shi)
9867 {
9868 Elf32_External_Rela *srel = slo + (shi - slo) / 2;
9869 bfd_elf32_swap_reloca_in (output_bfd, (bfd_byte *) srel,
9870 &outrel);
9871 if (outrel.r_offset < soffset)
9872 slo = srel + 1;
9873 else if (outrel.r_offset > soffset + 3)
9874 shi = srel;
9875 else
9876 {
9877 if (srel + 1 != srelend)
9878 {
9879 memmove (srel, srel + 1,
9880 (srelend - (srel + 1)) * sizeof (*srel));
9881 srel = srelend - 1;
9882 }
9883 outrel.r_offset += patch_off - offset;
9884 bfd_elf32_swap_reloca_out (output_bfd, &outrel,
9885 (bfd_byte *) srel);
9886 break;
9887 }
9888 }
9889 }
9890 }
9891 else
9892 rel = NULL;
9893
9894 if ((insn & (0x3f << 26)) == (16u << 26) /* bc */
9895 && (insn & 2) == 0 /* relative */)
9896 {
9897 bfd_vma delta = ((insn & 0xfffc) ^ 0x8000) - 0x8000;
9898
9899 delta += offset - patch_off;
9900 if (bfd_link_relocatable (info) && rel != NULL)
9901 delta = 0;
9902 if (!bfd_link_relocatable (info) && rel != NULL)
9903 {
9904 enum elf_ppc_reloc_type r_type;
9905
9906 r_type = ELF32_R_TYPE (relend[-1].r_info);
9907 if (r_type == R_PPC_REL14_BRTAKEN)
9908 insn |= BRANCH_PREDICT_BIT;
9909 else if (r_type == R_PPC_REL14_BRNTAKEN)
9910 insn &= ~BRANCH_PREDICT_BIT;
9911 else
9912 BFD_ASSERT (r_type == R_PPC_REL14);
9913
9914 if ((r_type == R_PPC_REL14_BRTAKEN
9915 || r_type == R_PPC_REL14_BRNTAKEN)
9916 && delta + 0x8000 < 0x10000
9917 && (bfd_signed_vma) delta < 0)
9918 insn ^= BRANCH_PREDICT_BIT;
9919 }
9920 if (delta + 0x8000 < 0x10000)
9921 {
9922 bfd_put_32 (input_bfd,
9923 (insn & ~0xfffc) | (delta & 0xfffc),
9924 contents + patch_off);
9925 patch_off += 4;
9926 bfd_put_32 (input_bfd,
9927 B | ((offset + 4 - patch_off) & 0x3fffffc),
9928 contents + patch_off);
9929 patch_off += 4;
9930 }
9931 else
9932 {
9933 if (rel != NULL)
9934 {
9935 unsigned int r_sym = ELF32_R_SYM (relend[-1].r_info);
9936
9937 relend[-1].r_offset += 8;
9938 relend[-1].r_info = ELF32_R_INFO (r_sym, R_PPC_REL24);
9939 }
9940 bfd_put_32 (input_bfd,
9941 (insn & ~0xfffc) | 8,
9942 contents + patch_off);
9943 patch_off += 4;
9944 bfd_put_32 (input_bfd,
9945 B | ((offset + 4 - patch_off) & 0x3fffffc),
9946 contents + patch_off);
9947 patch_off += 4;
9948 bfd_put_32 (input_bfd,
9949 B | ((delta - 8) & 0x3fffffc),
9950 contents + patch_off);
9951 patch_off += 4;
9952 }
9953 }
9954 else
9955 {
9956 bfd_put_32 (input_bfd, insn, contents + patch_off);
9957 patch_off += 4;
9958 bfd_put_32 (input_bfd,
9959 B | ((offset + 4 - patch_off) & 0x3fffffc),
9960 contents + patch_off);
9961 patch_off += 4;
9962 }
9963 BFD_ASSERT (patch_off <= input_section->size);
9964 relax_info->workaround_size = input_section->size - patch_off;
9965 }
9966 }
9967
9968 return ret;
9969 }
9970 \f
9971 /* Finish up dynamic symbol handling. We set the contents of various
9972 dynamic sections here. */
9973
9974 static bfd_boolean
9975 ppc_elf_finish_dynamic_symbol (bfd *output_bfd,
9976 struct bfd_link_info *info,
9977 struct elf_link_hash_entry *h,
9978 Elf_Internal_Sym *sym)
9979 {
9980 struct ppc_elf_link_hash_table *htab;
9981 struct plt_entry *ent;
9982 bfd_boolean doneone;
9983
9984 #ifdef DEBUG
9985 fprintf (stderr, "ppc_elf_finish_dynamic_symbol called for %s",
9986 h->root.root.string);
9987 #endif
9988
9989 htab = ppc_elf_hash_table (info);
9990 BFD_ASSERT (htab->elf.dynobj != NULL);
9991
9992 doneone = FALSE;
9993 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
9994 if (ent->plt.offset != (bfd_vma) -1)
9995 {
9996 if (!doneone)
9997 {
9998 Elf_Internal_Rela rela;
9999 bfd_byte *loc;
10000 bfd_vma reloc_index;
10001
10002 if (htab->plt_type == PLT_NEW
10003 || !htab->elf.dynamic_sections_created
10004 || h->dynindx == -1)
10005 reloc_index = ent->plt.offset / 4;
10006 else
10007 {
10008 reloc_index = ((ent->plt.offset - htab->plt_initial_entry_size)
10009 / htab->plt_slot_size);
10010 if (reloc_index > PLT_NUM_SINGLE_ENTRIES
10011 && htab->plt_type == PLT_OLD)
10012 reloc_index -= (reloc_index - PLT_NUM_SINGLE_ENTRIES) / 2;
10013 }
10014
10015 /* This symbol has an entry in the procedure linkage table.
10016 Set it up. */
10017 if (htab->plt_type == PLT_VXWORKS
10018 && htab->elf.dynamic_sections_created
10019 && h->dynindx != -1)
10020 {
10021 bfd_vma got_offset;
10022 const bfd_vma *plt_entry;
10023
10024 /* The first three entries in .got.plt are reserved. */
10025 got_offset = (reloc_index + 3) * 4;
10026
10027 /* Use the right PLT. */
10028 plt_entry = bfd_link_pic (info) ? ppc_elf_vxworks_pic_plt_entry
10029 : ppc_elf_vxworks_plt_entry;
10030
10031 /* Fill in the .plt on VxWorks. */
10032 if (bfd_link_pic (info))
10033 {
10034 bfd_put_32 (output_bfd,
10035 plt_entry[0] | PPC_HA (got_offset),
10036 htab->elf.splt->contents + ent->plt.offset + 0);
10037 bfd_put_32 (output_bfd,
10038 plt_entry[1] | PPC_LO (got_offset),
10039 htab->elf.splt->contents + ent->plt.offset + 4);
10040 }
10041 else
10042 {
10043 bfd_vma got_loc = got_offset + SYM_VAL (htab->elf.hgot);
10044
10045 bfd_put_32 (output_bfd,
10046 plt_entry[0] | PPC_HA (got_loc),
10047 htab->elf.splt->contents + ent->plt.offset + 0);
10048 bfd_put_32 (output_bfd,
10049 plt_entry[1] | PPC_LO (got_loc),
10050 htab->elf.splt->contents + ent->plt.offset + 4);
10051 }
10052
10053 bfd_put_32 (output_bfd, plt_entry[2],
10054 htab->elf.splt->contents + ent->plt.offset + 8);
10055 bfd_put_32 (output_bfd, plt_entry[3],
10056 htab->elf.splt->contents + ent->plt.offset + 12);
10057
10058 /* This instruction is an immediate load. The value loaded is
10059 the byte offset of the R_PPC_JMP_SLOT relocation from the
10060 start of the .rela.plt section. The value is stored in the
10061 low-order 16 bits of the load instruction. */
10062 /* NOTE: It appears that this is now an index rather than a
10063 prescaled offset. */
10064 bfd_put_32 (output_bfd,
10065 plt_entry[4] | reloc_index,
10066 htab->elf.splt->contents + ent->plt.offset + 16);
10067 /* This instruction is a PC-relative branch whose target is
10068 the start of the PLT section. The address of this branch
10069 instruction is 20 bytes beyond the start of this PLT entry.
10070 The address is encoded in bits 6-29, inclusive. The value
10071 stored is right-shifted by two bits, permitting a 26-bit
10072 offset. */
10073 bfd_put_32 (output_bfd,
10074 (plt_entry[5]
10075 | (-(ent->plt.offset + 20) & 0x03fffffc)),
10076 htab->elf.splt->contents + ent->plt.offset + 20);
10077 bfd_put_32 (output_bfd, plt_entry[6],
10078 htab->elf.splt->contents + ent->plt.offset + 24);
10079 bfd_put_32 (output_bfd, plt_entry[7],
10080 htab->elf.splt->contents + ent->plt.offset + 28);
10081
10082 /* Fill in the GOT entry corresponding to this PLT slot with
10083 the address immediately after the "bctr" instruction
10084 in this PLT entry. */
10085 bfd_put_32 (output_bfd, (htab->elf.splt->output_section->vma
10086 + htab->elf.splt->output_offset
10087 + ent->plt.offset + 16),
10088 htab->elf.sgotplt->contents + got_offset);
10089
10090 if (!bfd_link_pic (info))
10091 {
10092 /* Fill in a couple of entries in .rela.plt.unloaded. */
10093 loc = htab->srelplt2->contents
10094 + ((VXWORKS_PLTRESOLVE_RELOCS + reloc_index
10095 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS)
10096 * sizeof (Elf32_External_Rela));
10097
10098 /* Provide the @ha relocation for the first instruction. */
10099 rela.r_offset = (htab->elf.splt->output_section->vma
10100 + htab->elf.splt->output_offset
10101 + ent->plt.offset + 2);
10102 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
10103 R_PPC_ADDR16_HA);
10104 rela.r_addend = got_offset;
10105 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10106 loc += sizeof (Elf32_External_Rela);
10107
10108 /* Provide the @l relocation for the second instruction. */
10109 rela.r_offset = (htab->elf.splt->output_section->vma
10110 + htab->elf.splt->output_offset
10111 + ent->plt.offset + 6);
10112 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
10113 R_PPC_ADDR16_LO);
10114 rela.r_addend = got_offset;
10115 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10116 loc += sizeof (Elf32_External_Rela);
10117
10118 /* Provide a relocation for the GOT entry corresponding to this
10119 PLT slot. Point it at the middle of the .plt entry. */
10120 rela.r_offset = (htab->elf.sgotplt->output_section->vma
10121 + htab->elf.sgotplt->output_offset
10122 + got_offset);
10123 rela.r_info = ELF32_R_INFO (htab->elf.hplt->indx,
10124 R_PPC_ADDR32);
10125 rela.r_addend = ent->plt.offset + 16;
10126 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10127 }
10128
10129 /* VxWorks uses non-standard semantics for R_PPC_JMP_SLOT.
10130 In particular, the offset for the relocation is not the
10131 address of the PLT entry for this function, as specified
10132 by the ABI. Instead, the offset is set to the address of
10133 the GOT slot for this function. See EABI 4.4.4.1. */
10134 rela.r_offset = (htab->elf.sgotplt->output_section->vma
10135 + htab->elf.sgotplt->output_offset
10136 + got_offset);
10137
10138 }
10139 else
10140 {
10141 asection *splt = htab->elf.splt;
10142 if (!htab->elf.dynamic_sections_created
10143 || h->dynindx == -1)
10144 splt = htab->elf.iplt;
10145
10146 rela.r_offset = (splt->output_section->vma
10147 + splt->output_offset
10148 + ent->plt.offset);
10149 if (htab->plt_type == PLT_OLD
10150 || !htab->elf.dynamic_sections_created
10151 || h->dynindx == -1)
10152 {
10153 /* We don't need to fill in the .plt. The ppc dynamic
10154 linker will fill it in. */
10155 }
10156 else
10157 {
10158 bfd_vma val = (htab->glink_pltresolve + ent->plt.offset
10159 + htab->glink->output_section->vma
10160 + htab->glink->output_offset);
10161 bfd_put_32 (output_bfd, val,
10162 splt->contents + ent->plt.offset);
10163 }
10164 }
10165
10166 /* Fill in the entry in the .rela.plt section. */
10167 rela.r_addend = 0;
10168 if (!htab->elf.dynamic_sections_created
10169 || h->dynindx == -1)
10170 {
10171 BFD_ASSERT (h->type == STT_GNU_IFUNC
10172 && h->def_regular
10173 && (h->root.type == bfd_link_hash_defined
10174 || h->root.type == bfd_link_hash_defweak));
10175 rela.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
10176 rela.r_addend = SYM_VAL (h);
10177 }
10178 else
10179 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_JMP_SLOT);
10180
10181 if (!htab->elf.dynamic_sections_created
10182 || h->dynindx == -1)
10183 {
10184 loc = (htab->elf.irelplt->contents
10185 + (htab->elf.irelplt->reloc_count++
10186 * sizeof (Elf32_External_Rela)));
10187 htab->local_ifunc_resolver = 1;
10188 }
10189 else
10190 {
10191 loc = (htab->elf.srelplt->contents
10192 + reloc_index * sizeof (Elf32_External_Rela));
10193 if (h->type == STT_GNU_IFUNC && is_static_defined (h))
10194 htab->maybe_local_ifunc_resolver = 1;
10195 }
10196 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10197
10198 if (!h->def_regular)
10199 {
10200 /* Mark the symbol as undefined, rather than as
10201 defined in the .plt section. Leave the value if
10202 there were any relocations where pointer equality
10203 matters (this is a clue for the dynamic linker, to
10204 make function pointer comparisons work between an
10205 application and shared library), otherwise set it
10206 to zero. */
10207 sym->st_shndx = SHN_UNDEF;
10208 if (!h->pointer_equality_needed)
10209 sym->st_value = 0;
10210 else if (!h->ref_regular_nonweak)
10211 {
10212 /* This breaks function pointer comparisons, but
10213 that is better than breaking tests for a NULL
10214 function pointer. */
10215 sym->st_value = 0;
10216 }
10217 }
10218 else if (h->type == STT_GNU_IFUNC
10219 && !bfd_link_pic (info))
10220 {
10221 /* Set the value of ifunc symbols in a non-pie
10222 executable to the glink entry. This is to avoid
10223 text relocations. We can't do this for ifunc in
10224 allocate_dynrelocs, as we do for normal dynamic
10225 function symbols with plt entries, because we need
10226 to keep the original value around for the ifunc
10227 relocation. */
10228 sym->st_shndx = (_bfd_elf_section_from_bfd_section
10229 (output_bfd, htab->glink->output_section));
10230 sym->st_value = (ent->glink_offset
10231 + htab->glink->output_offset
10232 + htab->glink->output_section->vma);
10233 }
10234 doneone = TRUE;
10235 }
10236
10237 if (htab->plt_type == PLT_NEW
10238 || !htab->elf.dynamic_sections_created
10239 || h->dynindx == -1)
10240 {
10241 unsigned char *p;
10242 asection *splt = htab->elf.splt;
10243
10244 if (!htab->elf.dynamic_sections_created
10245 || h->dynindx == -1)
10246 splt = htab->elf.iplt;
10247
10248 p = (unsigned char *) htab->glink->contents + ent->glink_offset;
10249 write_glink_stub (h, ent, splt, p, info);
10250
10251 if (!bfd_link_pic (info))
10252 /* We only need one non-PIC glink stub. */
10253 break;
10254 }
10255 else
10256 break;
10257 }
10258
10259 if (h->needs_copy)
10260 {
10261 asection *s;
10262 Elf_Internal_Rela rela;
10263 bfd_byte *loc;
10264
10265 /* This symbols needs a copy reloc. Set it up. */
10266
10267 #ifdef DEBUG
10268 fprintf (stderr, ", copy");
10269 #endif
10270
10271 BFD_ASSERT (h->dynindx != -1);
10272
10273 if (ppc_elf_hash_entry (h)->has_sda_refs)
10274 s = htab->relsbss;
10275 else if (h->root.u.def.section == htab->elf.sdynrelro)
10276 s = htab->elf.sreldynrelro;
10277 else
10278 s = htab->elf.srelbss;
10279 BFD_ASSERT (s != NULL);
10280
10281 rela.r_offset = SYM_VAL (h);
10282 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_COPY);
10283 rela.r_addend = 0;
10284 loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
10285 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10286 }
10287
10288 #ifdef DEBUG
10289 fprintf (stderr, "\n");
10290 #endif
10291
10292 return TRUE;
10293 }
10294 \f
10295 static enum elf_reloc_type_class
10296 ppc_elf_reloc_type_class (const struct bfd_link_info *info,
10297 const asection *rel_sec,
10298 const Elf_Internal_Rela *rela)
10299 {
10300 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
10301
10302 if (rel_sec == htab->elf.irelplt)
10303 return reloc_class_ifunc;
10304
10305 switch (ELF32_R_TYPE (rela->r_info))
10306 {
10307 case R_PPC_RELATIVE:
10308 return reloc_class_relative;
10309 case R_PPC_JMP_SLOT:
10310 return reloc_class_plt;
10311 case R_PPC_COPY:
10312 return reloc_class_copy;
10313 default:
10314 return reloc_class_normal;
10315 }
10316 }
10317 \f
10318 /* Finish up the dynamic sections. */
10319
10320 static bfd_boolean
10321 ppc_elf_finish_dynamic_sections (bfd *output_bfd,
10322 struct bfd_link_info *info)
10323 {
10324 asection *sdyn;
10325 struct ppc_elf_link_hash_table *htab;
10326 bfd_vma got;
10327 bfd *dynobj;
10328 bfd_boolean ret = TRUE;
10329
10330 #ifdef DEBUG
10331 fprintf (stderr, "ppc_elf_finish_dynamic_sections called\n");
10332 #endif
10333
10334 htab = ppc_elf_hash_table (info);
10335 dynobj = htab->elf.dynobj;
10336 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
10337
10338 got = 0;
10339 if (htab->elf.hgot != NULL)
10340 got = SYM_VAL (htab->elf.hgot);
10341
10342 if (htab->elf.dynamic_sections_created)
10343 {
10344 Elf32_External_Dyn *dyncon, *dynconend;
10345
10346 BFD_ASSERT (htab->elf.splt != NULL && sdyn != NULL);
10347
10348 dyncon = (Elf32_External_Dyn *) sdyn->contents;
10349 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
10350 for (; dyncon < dynconend; dyncon++)
10351 {
10352 Elf_Internal_Dyn dyn;
10353 asection *s;
10354
10355 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
10356
10357 switch (dyn.d_tag)
10358 {
10359 case DT_PLTGOT:
10360 if (htab->is_vxworks)
10361 s = htab->elf.sgotplt;
10362 else
10363 s = htab->elf.splt;
10364 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
10365 break;
10366
10367 case DT_PLTRELSZ:
10368 dyn.d_un.d_val = htab->elf.srelplt->size;
10369 break;
10370
10371 case DT_JMPREL:
10372 s = htab->elf.srelplt;
10373 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
10374 break;
10375
10376 case DT_PPC_GOT:
10377 dyn.d_un.d_ptr = got;
10378 break;
10379
10380 case DT_TEXTREL:
10381 if (htab->local_ifunc_resolver)
10382 info->callbacks->einfo
10383 (_("%X%P: text relocations and GNU indirect "
10384 "functions will result in a segfault at runtime\n"));
10385 else if (htab->maybe_local_ifunc_resolver)
10386 info->callbacks->einfo
10387 (_("%P: warning: text relocations and GNU indirect "
10388 "functions may result in a segfault at runtime\n"));
10389 continue;
10390
10391 default:
10392 if (htab->is_vxworks
10393 && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn))
10394 break;
10395 continue;
10396 }
10397
10398 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
10399 }
10400 }
10401
10402 if (htab->elf.sgot != NULL
10403 && htab->elf.sgot->output_section != bfd_abs_section_ptr)
10404 {
10405 if (htab->elf.hgot->root.u.def.section == htab->elf.sgot
10406 || htab->elf.hgot->root.u.def.section == htab->elf.sgotplt)
10407 {
10408 unsigned char *p = htab->elf.hgot->root.u.def.section->contents;
10409
10410 p += htab->elf.hgot->root.u.def.value;
10411 if (htab->plt_type == PLT_OLD)
10412 {
10413 /* Add a blrl instruction at _GLOBAL_OFFSET_TABLE_-4
10414 so that a function can easily find the address of
10415 _GLOBAL_OFFSET_TABLE_. */
10416 BFD_ASSERT (htab->elf.hgot->root.u.def.value - 4
10417 < htab->elf.hgot->root.u.def.section->size);
10418 bfd_put_32 (output_bfd, 0x4e800021, p - 4);
10419 }
10420
10421 if (sdyn != NULL)
10422 {
10423 bfd_vma val = sdyn->output_section->vma + sdyn->output_offset;
10424 BFD_ASSERT (htab->elf.hgot->root.u.def.value
10425 < htab->elf.hgot->root.u.def.section->size);
10426 bfd_put_32 (output_bfd, val, p);
10427 }
10428 }
10429 else
10430 {
10431 /* xgettext:c-format */
10432 info->callbacks->einfo (_("%P: %s not defined in linker created %s\n"),
10433 htab->elf.hgot->root.root.string,
10434 (htab->elf.sgotplt != NULL
10435 ? htab->elf.sgotplt->name
10436 : htab->elf.sgot->name));
10437 bfd_set_error (bfd_error_bad_value);
10438 ret = FALSE;
10439 }
10440
10441 elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize = 4;
10442 }
10443
10444 /* Fill in the first entry in the VxWorks procedure linkage table. */
10445 if (htab->is_vxworks
10446 && htab->elf.splt != NULL
10447 && htab->elf.splt->size != 0
10448 && htab->elf.splt->output_section != bfd_abs_section_ptr)
10449 {
10450 asection *splt = htab->elf.splt;
10451 /* Use the right PLT. */
10452 const bfd_vma *plt_entry = (bfd_link_pic (info)
10453 ? ppc_elf_vxworks_pic_plt0_entry
10454 : ppc_elf_vxworks_plt0_entry);
10455
10456 if (!bfd_link_pic (info))
10457 {
10458 bfd_vma got_value = SYM_VAL (htab->elf.hgot);
10459
10460 bfd_put_32 (output_bfd, plt_entry[0] | PPC_HA (got_value),
10461 splt->contents + 0);
10462 bfd_put_32 (output_bfd, plt_entry[1] | PPC_LO (got_value),
10463 splt->contents + 4);
10464 }
10465 else
10466 {
10467 bfd_put_32 (output_bfd, plt_entry[0], splt->contents + 0);
10468 bfd_put_32 (output_bfd, plt_entry[1], splt->contents + 4);
10469 }
10470 bfd_put_32 (output_bfd, plt_entry[2], splt->contents + 8);
10471 bfd_put_32 (output_bfd, plt_entry[3], splt->contents + 12);
10472 bfd_put_32 (output_bfd, plt_entry[4], splt->contents + 16);
10473 bfd_put_32 (output_bfd, plt_entry[5], splt->contents + 20);
10474 bfd_put_32 (output_bfd, plt_entry[6], splt->contents + 24);
10475 bfd_put_32 (output_bfd, plt_entry[7], splt->contents + 28);
10476
10477 if (! bfd_link_pic (info))
10478 {
10479 Elf_Internal_Rela rela;
10480 bfd_byte *loc;
10481
10482 loc = htab->srelplt2->contents;
10483
10484 /* Output the @ha relocation for the first instruction. */
10485 rela.r_offset = (htab->elf.splt->output_section->vma
10486 + htab->elf.splt->output_offset
10487 + 2);
10488 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
10489 rela.r_addend = 0;
10490 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10491 loc += sizeof (Elf32_External_Rela);
10492
10493 /* Output the @l relocation for the second instruction. */
10494 rela.r_offset = (htab->elf.splt->output_section->vma
10495 + htab->elf.splt->output_offset
10496 + 6);
10497 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
10498 rela.r_addend = 0;
10499 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10500 loc += sizeof (Elf32_External_Rela);
10501
10502 /* Fix up the remaining relocations. They may have the wrong
10503 symbol index for _G_O_T_ or _P_L_T_ depending on the order
10504 in which symbols were output. */
10505 while (loc < htab->srelplt2->contents + htab->srelplt2->size)
10506 {
10507 Elf_Internal_Rela rel;
10508
10509 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
10510 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
10511 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
10512 loc += sizeof (Elf32_External_Rela);
10513
10514 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
10515 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
10516 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
10517 loc += sizeof (Elf32_External_Rela);
10518
10519 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
10520 rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_PPC_ADDR32);
10521 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
10522 loc += sizeof (Elf32_External_Rela);
10523 }
10524 }
10525 }
10526
10527 if (htab->glink != NULL
10528 && htab->glink->contents != NULL
10529 && htab->elf.dynamic_sections_created)
10530 {
10531 unsigned char *p;
10532 unsigned char *endp;
10533 bfd_vma res0;
10534
10535 /*
10536 * PIC glink code is the following:
10537 *
10538 * # ith PLT code stub.
10539 * addis 11,30,(plt+(i-1)*4-got)@ha
10540 * lwz 11,(plt+(i-1)*4-got)@l(11)
10541 * mtctr 11
10542 * bctr
10543 *
10544 * # A table of branches, one for each plt entry.
10545 * # The idea is that the plt call stub loads ctr and r11 with these
10546 * # addresses, so (r11 - res_0) gives the plt index * 4.
10547 * res_0: b PLTresolve
10548 * res_1: b PLTresolve
10549 * .
10550 * # Some number of entries towards the end can be nops
10551 * res_n_m3: nop
10552 * res_n_m2: nop
10553 * res_n_m1:
10554 *
10555 * PLTresolve:
10556 * addis 11,11,(1f-res_0)@ha
10557 * mflr 0
10558 * bcl 20,31,1f
10559 * 1: addi 11,11,(1b-res_0)@l
10560 * mflr 12
10561 * mtlr 0
10562 * sub 11,11,12 # r11 = index * 4
10563 * addis 12,12,(got+4-1b)@ha
10564 * lwz 0,(got+4-1b)@l(12) # got[1] address of dl_runtime_resolve
10565 * lwz 12,(got+8-1b)@l(12) # got[2] contains the map address
10566 * mtctr 0
10567 * add 0,11,11
10568 * add 11,0,11 # r11 = index * 12 = reloc offset.
10569 * bctr
10570 *
10571 * Non-PIC glink code is a little simpler.
10572 *
10573 * # ith PLT code stub.
10574 * lis 11,(plt+(i-1)*4)@ha
10575 * lwz 11,(plt+(i-1)*4)@l(11)
10576 * mtctr 11
10577 * bctr
10578 *
10579 * The branch table is the same, then comes
10580 *
10581 * PLTresolve:
10582 * lis 12,(got+4)@ha
10583 * addis 11,11,(-res_0)@ha
10584 * lwz 0,(got+4)@l(12) # got[1] address of dl_runtime_resolve
10585 * addi 11,11,(-res_0)@l # r11 = index * 4
10586 * mtctr 0
10587 * add 0,11,11
10588 * lwz 12,(got+8)@l(12) # got[2] contains the map address
10589 * add 11,0,11 # r11 = index * 12 = reloc offset.
10590 * bctr
10591 */
10592
10593 /* Build the branch table, one for each plt entry (less one),
10594 and perhaps some padding. */
10595 p = htab->glink->contents;
10596 p += htab->glink_pltresolve;
10597 endp = htab->glink->contents;
10598 endp += htab->glink->size - GLINK_PLTRESOLVE;
10599 while (p < endp - (htab->params->ppc476_workaround ? 0 : 8 * 4))
10600 {
10601 bfd_put_32 (output_bfd, B + endp - p, p);
10602 p += 4;
10603 }
10604 while (p < endp)
10605 {
10606 bfd_put_32 (output_bfd, NOP, p);
10607 p += 4;
10608 }
10609
10610 res0 = (htab->glink_pltresolve
10611 + htab->glink->output_section->vma
10612 + htab->glink->output_offset);
10613
10614 if (htab->params->ppc476_workaround)
10615 {
10616 /* Ensure that a call stub at the end of a page doesn't
10617 result in prefetch over the end of the page into the
10618 glink branch table. */
10619 bfd_vma pagesize = (bfd_vma) 1 << htab->params->pagesize_p2;
10620 bfd_vma page_addr;
10621 bfd_vma glink_start = (htab->glink->output_section->vma
10622 + htab->glink->output_offset);
10623
10624 for (page_addr = res0 & -pagesize;
10625 page_addr > glink_start;
10626 page_addr -= pagesize)
10627 {
10628 /* We have a plt call stub that may need fixing. */
10629 bfd_byte *loc;
10630 unsigned int insn;
10631
10632 loc = htab->glink->contents + page_addr - 4 - glink_start;
10633 insn = bfd_get_32 (output_bfd, loc);
10634 if (insn == BCTR)
10635 {
10636 /* By alignment, we know that there must be at least
10637 one other call stub before this one. */
10638 insn = bfd_get_32 (output_bfd, loc - 16);
10639 if (insn == BCTR)
10640 bfd_put_32 (output_bfd, B | (-16 & 0x3fffffc), loc);
10641 else
10642 bfd_put_32 (output_bfd, B | (-20 & 0x3fffffc), loc);
10643 }
10644 }
10645 }
10646
10647 /* Last comes the PLTresolve stub. */
10648 endp = p + GLINK_PLTRESOLVE;
10649 if (bfd_link_pic (info))
10650 {
10651 bfd_vma bcl;
10652
10653 bcl = (htab->glink->size - GLINK_PLTRESOLVE + 3*4
10654 + htab->glink->output_section->vma
10655 + htab->glink->output_offset);
10656
10657 bfd_put_32 (output_bfd, ADDIS_11_11 + PPC_HA (bcl - res0), p);
10658 p += 4;
10659 bfd_put_32 (output_bfd, MFLR_0, p);
10660 p += 4;
10661 bfd_put_32 (output_bfd, BCL_20_31, p);
10662 p += 4;
10663 bfd_put_32 (output_bfd, ADDI_11_11 + PPC_LO (bcl - res0), p);
10664 p += 4;
10665 bfd_put_32 (output_bfd, MFLR_12, p);
10666 p += 4;
10667 bfd_put_32 (output_bfd, MTLR_0, p);
10668 p += 4;
10669 bfd_put_32 (output_bfd, SUB_11_11_12, p);
10670 p += 4;
10671 bfd_put_32 (output_bfd, ADDIS_12_12 + PPC_HA (got + 4 - bcl), p);
10672 p += 4;
10673 if (PPC_HA (got + 4 - bcl) == PPC_HA (got + 8 - bcl))
10674 {
10675 bfd_put_32 (output_bfd, LWZ_0_12 + PPC_LO (got + 4 - bcl), p);
10676 p += 4;
10677 bfd_put_32 (output_bfd, LWZ_12_12 + PPC_LO (got + 8 - bcl), p);
10678 p += 4;
10679 }
10680 else
10681 {
10682 bfd_put_32 (output_bfd, LWZU_0_12 + PPC_LO (got + 4 - bcl), p);
10683 p += 4;
10684 bfd_put_32 (output_bfd, LWZ_12_12 + 4, p);
10685 p += 4;
10686 }
10687 bfd_put_32 (output_bfd, MTCTR_0, p);
10688 p += 4;
10689 bfd_put_32 (output_bfd, ADD_0_11_11, p);
10690 }
10691 else
10692 {
10693 bfd_put_32 (output_bfd, LIS_12 + PPC_HA (got + 4), p);
10694 p += 4;
10695 bfd_put_32 (output_bfd, ADDIS_11_11 + PPC_HA (-res0), p);
10696 p += 4;
10697 if (PPC_HA (got + 4) == PPC_HA (got + 8))
10698 bfd_put_32 (output_bfd, LWZ_0_12 + PPC_LO (got + 4), p);
10699 else
10700 bfd_put_32 (output_bfd, LWZU_0_12 + PPC_LO (got + 4), p);
10701 p += 4;
10702 bfd_put_32 (output_bfd, ADDI_11_11 + PPC_LO (-res0), p);
10703 p += 4;
10704 bfd_put_32 (output_bfd, MTCTR_0, p);
10705 p += 4;
10706 bfd_put_32 (output_bfd, ADD_0_11_11, p);
10707 p += 4;
10708 if (PPC_HA (got + 4) == PPC_HA (got + 8))
10709 bfd_put_32 (output_bfd, LWZ_12_12 + PPC_LO (got + 8), p);
10710 else
10711 bfd_put_32 (output_bfd, LWZ_12_12 + 4, p);
10712 }
10713 p += 4;
10714 bfd_put_32 (output_bfd, ADD_11_0_11, p);
10715 p += 4;
10716 p = output_bctr (htab, output_bfd, p);
10717 while (p < endp)
10718 {
10719 bfd_put_32 (output_bfd,
10720 htab->params->ppc476_workaround ? BA : NOP, p);
10721 p += 4;
10722 }
10723 BFD_ASSERT (p == endp);
10724 }
10725
10726 if (htab->glink_eh_frame != NULL
10727 && htab->glink_eh_frame->contents != NULL)
10728 {
10729 unsigned char *p = htab->glink_eh_frame->contents;
10730 bfd_vma val;
10731
10732 p += sizeof (glink_eh_frame_cie);
10733 /* FDE length. */
10734 p += 4;
10735 /* CIE pointer. */
10736 p += 4;
10737 /* Offset to .glink. */
10738 val = (htab->glink->output_section->vma
10739 + htab->glink->output_offset);
10740 val -= (htab->glink_eh_frame->output_section->vma
10741 + htab->glink_eh_frame->output_offset);
10742 val -= p - htab->glink_eh_frame->contents;
10743 bfd_put_32 (htab->elf.dynobj, val, p);
10744
10745 if (htab->glink_eh_frame->sec_info_type == SEC_INFO_TYPE_EH_FRAME
10746 && !_bfd_elf_write_section_eh_frame (output_bfd, info,
10747 htab->glink_eh_frame,
10748 htab->glink_eh_frame->contents))
10749 return FALSE;
10750 }
10751
10752 return ret;
10753 }
10754 \f
10755 #define TARGET_LITTLE_SYM powerpc_elf32_le_vec
10756 #define TARGET_LITTLE_NAME "elf32-powerpcle"
10757 #define TARGET_BIG_SYM powerpc_elf32_vec
10758 #define TARGET_BIG_NAME "elf32-powerpc"
10759 #define ELF_ARCH bfd_arch_powerpc
10760 #define ELF_TARGET_ID PPC32_ELF_DATA
10761 #define ELF_MACHINE_CODE EM_PPC
10762 #ifdef __QNXTARGET__
10763 #define ELF_MAXPAGESIZE 0x1000
10764 #define ELF_COMMONPAGESIZE 0x1000
10765 #else
10766 #define ELF_MAXPAGESIZE 0x10000
10767 #define ELF_COMMONPAGESIZE 0x10000
10768 #endif
10769 #define ELF_MINPAGESIZE 0x1000
10770 #define elf_info_to_howto ppc_elf_info_to_howto
10771
10772 #ifdef EM_CYGNUS_POWERPC
10773 #define ELF_MACHINE_ALT1 EM_CYGNUS_POWERPC
10774 #endif
10775
10776 #ifdef EM_PPC_OLD
10777 #define ELF_MACHINE_ALT2 EM_PPC_OLD
10778 #endif
10779
10780 #define elf_backend_plt_not_loaded 1
10781 #define elf_backend_want_dynrelro 1
10782 #define elf_backend_can_gc_sections 1
10783 #define elf_backend_can_refcount 1
10784 #define elf_backend_rela_normal 1
10785 #define elf_backend_caches_rawsize 1
10786
10787 #define bfd_elf32_mkobject ppc_elf_mkobject
10788 #define bfd_elf32_bfd_merge_private_bfd_data ppc_elf_merge_private_bfd_data
10789 #define bfd_elf32_bfd_relax_section ppc_elf_relax_section
10790 #define bfd_elf32_bfd_reloc_type_lookup ppc_elf_reloc_type_lookup
10791 #define bfd_elf32_bfd_reloc_name_lookup ppc_elf_reloc_name_lookup
10792 #define bfd_elf32_bfd_set_private_flags ppc_elf_set_private_flags
10793 #define bfd_elf32_bfd_link_hash_table_create ppc_elf_link_hash_table_create
10794 #define bfd_elf32_get_synthetic_symtab ppc_elf_get_synthetic_symtab
10795
10796 #define elf_backend_object_p ppc_elf_object_p
10797 #define elf_backend_gc_mark_hook ppc_elf_gc_mark_hook
10798 #define elf_backend_section_from_shdr ppc_elf_section_from_shdr
10799 #define elf_backend_relocate_section ppc_elf_relocate_section
10800 #define elf_backend_create_dynamic_sections ppc_elf_create_dynamic_sections
10801 #define elf_backend_check_relocs ppc_elf_check_relocs
10802 #define elf_backend_relocs_compatible _bfd_elf_relocs_compatible
10803 #define elf_backend_copy_indirect_symbol ppc_elf_copy_indirect_symbol
10804 #define elf_backend_adjust_dynamic_symbol ppc_elf_adjust_dynamic_symbol
10805 #define elf_backend_add_symbol_hook ppc_elf_add_symbol_hook
10806 #define elf_backend_size_dynamic_sections ppc_elf_size_dynamic_sections
10807 #define elf_backend_hash_symbol ppc_elf_hash_symbol
10808 #define elf_backend_finish_dynamic_symbol ppc_elf_finish_dynamic_symbol
10809 #define elf_backend_finish_dynamic_sections ppc_elf_finish_dynamic_sections
10810 #define elf_backend_fake_sections ppc_elf_fake_sections
10811 #define elf_backend_additional_program_headers ppc_elf_additional_program_headers
10812 #define elf_backend_modify_segment_map ppc_elf_modify_segment_map
10813 #define elf_backend_grok_prstatus ppc_elf_grok_prstatus
10814 #define elf_backend_grok_psinfo ppc_elf_grok_psinfo
10815 #define elf_backend_write_core_note ppc_elf_write_core_note
10816 #define elf_backend_reloc_type_class ppc_elf_reloc_type_class
10817 #define elf_backend_begin_write_processing ppc_elf_begin_write_processing
10818 #define elf_backend_final_write_processing ppc_elf_final_write_processing
10819 #define elf_backend_write_section ppc_elf_write_section
10820 #define elf_backend_get_sec_type_attr ppc_elf_get_sec_type_attr
10821 #define elf_backend_plt_sym_val ppc_elf_plt_sym_val
10822 #define elf_backend_action_discarded ppc_elf_action_discarded
10823 #define elf_backend_init_index_section _bfd_elf_init_1_index_section
10824 #define elf_backend_lookup_section_flags_hook ppc_elf_lookup_section_flags
10825
10826 #include "elf32-target.h"
10827
10828 /* FreeBSD Target */
10829
10830 #undef TARGET_LITTLE_SYM
10831 #undef TARGET_LITTLE_NAME
10832
10833 #undef TARGET_BIG_SYM
10834 #define TARGET_BIG_SYM powerpc_elf32_fbsd_vec
10835 #undef TARGET_BIG_NAME
10836 #define TARGET_BIG_NAME "elf32-powerpc-freebsd"
10837
10838 #undef ELF_OSABI
10839 #define ELF_OSABI ELFOSABI_FREEBSD
10840
10841 #undef elf32_bed
10842 #define elf32_bed elf32_powerpc_fbsd_bed
10843
10844 #include "elf32-target.h"
10845
10846 /* VxWorks Target */
10847
10848 #undef TARGET_LITTLE_SYM
10849 #undef TARGET_LITTLE_NAME
10850
10851 #undef TARGET_BIG_SYM
10852 #define TARGET_BIG_SYM powerpc_elf32_vxworks_vec
10853 #undef TARGET_BIG_NAME
10854 #define TARGET_BIG_NAME "elf32-powerpc-vxworks"
10855
10856 #undef ELF_OSABI
10857
10858 /* VxWorks uses the elf default section flags for .plt. */
10859 static const struct bfd_elf_special_section *
10860 ppc_elf_vxworks_get_sec_type_attr (bfd *abfd, asection *sec)
10861 {
10862 if (sec->name == NULL)
10863 return NULL;
10864
10865 if (strcmp (sec->name, ".plt") == 0)
10866 return _bfd_elf_get_sec_type_attr (abfd, sec);
10867
10868 return ppc_elf_get_sec_type_attr (abfd, sec);
10869 }
10870
10871 /* Like ppc_elf_link_hash_table_create, but overrides
10872 appropriately for VxWorks. */
10873 static struct bfd_link_hash_table *
10874 ppc_elf_vxworks_link_hash_table_create (bfd *abfd)
10875 {
10876 struct bfd_link_hash_table *ret;
10877
10878 ret = ppc_elf_link_hash_table_create (abfd);
10879 if (ret)
10880 {
10881 struct ppc_elf_link_hash_table *htab
10882 = (struct ppc_elf_link_hash_table *)ret;
10883 htab->is_vxworks = 1;
10884 htab->plt_type = PLT_VXWORKS;
10885 htab->plt_entry_size = VXWORKS_PLT_ENTRY_SIZE;
10886 htab->plt_slot_size = VXWORKS_PLT_ENTRY_SIZE;
10887 htab->plt_initial_entry_size = VXWORKS_PLT_INITIAL_ENTRY_SIZE;
10888 }
10889 return ret;
10890 }
10891
10892 /* Tweak magic VxWorks symbols as they are loaded. */
10893 static bfd_boolean
10894 ppc_elf_vxworks_add_symbol_hook (bfd *abfd,
10895 struct bfd_link_info *info,
10896 Elf_Internal_Sym *sym,
10897 const char **namep,
10898 flagword *flagsp,
10899 asection **secp,
10900 bfd_vma *valp)
10901 {
10902 if (!elf_vxworks_add_symbol_hook (abfd, info, sym, namep, flagsp, secp,
10903 valp))
10904 return FALSE;
10905
10906 return ppc_elf_add_symbol_hook (abfd, info, sym, namep, flagsp, secp, valp);
10907 }
10908
10909 static void
10910 ppc_elf_vxworks_final_write_processing (bfd *abfd, bfd_boolean linker)
10911 {
10912 ppc_elf_final_write_processing (abfd, linker);
10913 elf_vxworks_final_write_processing (abfd, linker);
10914 }
10915
10916 /* On VxWorks, we emit relocations against _PROCEDURE_LINKAGE_TABLE_, so
10917 define it. */
10918 #undef elf_backend_want_plt_sym
10919 #define elf_backend_want_plt_sym 1
10920 #undef elf_backend_want_got_plt
10921 #define elf_backend_want_got_plt 1
10922 #undef elf_backend_got_symbol_offset
10923 #define elf_backend_got_symbol_offset 0
10924 #undef elf_backend_plt_not_loaded
10925 #define elf_backend_plt_not_loaded 0
10926 #undef elf_backend_plt_readonly
10927 #define elf_backend_plt_readonly 1
10928 #undef elf_backend_got_header_size
10929 #define elf_backend_got_header_size 12
10930 #undef elf_backend_dtrel_excludes_plt
10931 #define elf_backend_dtrel_excludes_plt 1
10932
10933 #undef bfd_elf32_get_synthetic_symtab
10934
10935 #undef bfd_elf32_bfd_link_hash_table_create
10936 #define bfd_elf32_bfd_link_hash_table_create \
10937 ppc_elf_vxworks_link_hash_table_create
10938 #undef elf_backend_add_symbol_hook
10939 #define elf_backend_add_symbol_hook \
10940 ppc_elf_vxworks_add_symbol_hook
10941 #undef elf_backend_link_output_symbol_hook
10942 #define elf_backend_link_output_symbol_hook \
10943 elf_vxworks_link_output_symbol_hook
10944 #undef elf_backend_final_write_processing
10945 #define elf_backend_final_write_processing \
10946 ppc_elf_vxworks_final_write_processing
10947 #undef elf_backend_get_sec_type_attr
10948 #define elf_backend_get_sec_type_attr \
10949 ppc_elf_vxworks_get_sec_type_attr
10950 #undef elf_backend_emit_relocs
10951 #define elf_backend_emit_relocs \
10952 elf_vxworks_emit_relocs
10953
10954 #undef elf32_bed
10955 #define elf32_bed ppc_elf_vxworks_bed
10956 #undef elf_backend_post_process_headers
10957
10958 #include "elf32-target.h"
GDB Binutils - Deliverables
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