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PR22300, Abort in elf32_hppa_relocate_section building polyml
[deliverable/binutils-gdb.git] / bfd / elf32-ppc.c
1 /* PowerPC-specific support for 32-bit ELF
2 Copyright (C) 1994-2017 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 4*4
72 #define TLS_GET_ADDR_GLINK_SIZE 12*4
73
74 /* VxWorks uses its own plt layout, filled in by the static linker. */
75
76 /* The standard VxWorks PLT entry. */
77 #define VXWORKS_PLT_ENTRY_SIZE 32
78 static const bfd_vma ppc_elf_vxworks_plt_entry
79 [VXWORKS_PLT_ENTRY_SIZE / 4] =
80 {
81 0x3d800000, /* lis r12,0 */
82 0x818c0000, /* lwz r12,0(r12) */
83 0x7d8903a6, /* mtctr r12 */
84 0x4e800420, /* bctr */
85 0x39600000, /* li r11,0 */
86 0x48000000, /* b 14 <.PLT0resolve+0x4> */
87 0x60000000, /* nop */
88 0x60000000, /* nop */
89 };
90 static const bfd_vma ppc_elf_vxworks_pic_plt_entry
91 [VXWORKS_PLT_ENTRY_SIZE / 4] =
92 {
93 0x3d9e0000, /* addis r12,r30,0 */
94 0x818c0000, /* lwz r12,0(r12) */
95 0x7d8903a6, /* mtctr r12 */
96 0x4e800420, /* bctr */
97 0x39600000, /* li r11,0 */
98 0x48000000, /* b 14 <.PLT0resolve+0x4> 14: R_PPC_REL24 .PLTresolve */
99 0x60000000, /* nop */
100 0x60000000, /* nop */
101 };
102
103 /* The initial VxWorks PLT entry. */
104 #define VXWORKS_PLT_INITIAL_ENTRY_SIZE 32
105 static const bfd_vma ppc_elf_vxworks_plt0_entry
106 [VXWORKS_PLT_INITIAL_ENTRY_SIZE / 4] =
107 {
108 0x3d800000, /* lis r12,0 */
109 0x398c0000, /* addi r12,r12,0 */
110 0x800c0008, /* lwz r0,8(r12) */
111 0x7c0903a6, /* mtctr r0 */
112 0x818c0004, /* lwz r12,4(r12) */
113 0x4e800420, /* bctr */
114 0x60000000, /* nop */
115 0x60000000, /* nop */
116 };
117 static const bfd_vma ppc_elf_vxworks_pic_plt0_entry
118 [VXWORKS_PLT_INITIAL_ENTRY_SIZE / 4] =
119 {
120 0x819e0008, /* lwz r12,8(r30) */
121 0x7d8903a6, /* mtctr r12 */
122 0x819e0004, /* lwz r12,4(r30) */
123 0x4e800420, /* bctr */
124 0x60000000, /* nop */
125 0x60000000, /* nop */
126 0x60000000, /* nop */
127 0x60000000, /* nop */
128 };
129
130 /* For executables, we have some additional relocations in
131 .rela.plt.unloaded, for the kernel loader. */
132
133 /* The number of non-JMP_SLOT relocations per PLT0 slot. */
134 #define VXWORKS_PLT_NON_JMP_SLOT_RELOCS 3
135 /* The number of relocations in the PLTResolve slot. */
136 #define VXWORKS_PLTRESOLVE_RELOCS 2
137 /* The number of relocations in the PLTResolve slot when creating
138 a shared library. */
139 #define VXWORKS_PLTRESOLVE_RELOCS_SHLIB 0
140
141 /* Some instructions. */
142 #define ADDIS_11_11 0x3d6b0000
143 #define ADDIS_11_30 0x3d7e0000
144 #define ADDIS_12_12 0x3d8c0000
145 #define ADDI_11_11 0x396b0000
146 #define ADD_0_11_11 0x7c0b5a14
147 #define ADD_3_12_2 0x7c6c1214
148 #define ADD_11_0_11 0x7d605a14
149 #define B 0x48000000
150 #define BA 0x48000002
151 #define BCL_20_31 0x429f0005
152 #define BCTR 0x4e800420
153 #define BEQLR 0x4d820020
154 #define CMPWI_11_0 0x2c0b0000
155 #define LIS_11 0x3d600000
156 #define LIS_12 0x3d800000
157 #define LWZU_0_12 0x840c0000
158 #define LWZ_0_12 0x800c0000
159 #define LWZ_11_3 0x81630000
160 #define LWZ_11_11 0x816b0000
161 #define LWZ_11_30 0x817e0000
162 #define LWZ_12_3 0x81830000
163 #define LWZ_12_12 0x818c0000
164 #define MR_0_3 0x7c601b78
165 #define MR_3_0 0x7c030378
166 #define MFLR_0 0x7c0802a6
167 #define MFLR_12 0x7d8802a6
168 #define MTCTR_0 0x7c0903a6
169 #define MTCTR_11 0x7d6903a6
170 #define MTLR_0 0x7c0803a6
171 #define NOP 0x60000000
172 #define SUB_11_11_12 0x7d6c5850
173
174 /* Offset of tp and dtp pointers from start of TLS block. */
175 #define TP_OFFSET 0x7000
176 #define DTP_OFFSET 0x8000
177
178 /* The value of a defined global symbol. */
179 #define SYM_VAL(SYM) \
180 ((SYM)->root.u.def.section->output_section->vma \
181 + (SYM)->root.u.def.section->output_offset \
182 + (SYM)->root.u.def.value)
183 \f
184 static reloc_howto_type *ppc_elf_howto_table[R_PPC_max];
185
186 static reloc_howto_type ppc_elf_howto_raw[] = {
187 /* This reloc does nothing. */
188 HOWTO (R_PPC_NONE, /* type */
189 0, /* rightshift */
190 3, /* size (0 = byte, 1 = short, 2 = long) */
191 0, /* bitsize */
192 FALSE, /* pc_relative */
193 0, /* bitpos */
194 complain_overflow_dont, /* complain_on_overflow */
195 bfd_elf_generic_reloc, /* special_function */
196 "R_PPC_NONE", /* name */
197 FALSE, /* partial_inplace */
198 0, /* src_mask */
199 0, /* dst_mask */
200 FALSE), /* pcrel_offset */
201
202 /* A standard 32 bit relocation. */
203 HOWTO (R_PPC_ADDR32, /* type */
204 0, /* rightshift */
205 2, /* size (0 = byte, 1 = short, 2 = long) */
206 32, /* bitsize */
207 FALSE, /* pc_relative */
208 0, /* bitpos */
209 complain_overflow_dont, /* complain_on_overflow */
210 bfd_elf_generic_reloc, /* special_function */
211 "R_PPC_ADDR32", /* name */
212 FALSE, /* partial_inplace */
213 0, /* src_mask */
214 0xffffffff, /* dst_mask */
215 FALSE), /* pcrel_offset */
216
217 /* An absolute 26 bit branch; the lower two bits must be zero.
218 FIXME: we don't check that, we just clear them. */
219 HOWTO (R_PPC_ADDR24, /* type */
220 0, /* rightshift */
221 2, /* size (0 = byte, 1 = short, 2 = long) */
222 26, /* bitsize */
223 FALSE, /* pc_relative */
224 0, /* bitpos */
225 complain_overflow_signed, /* complain_on_overflow */
226 bfd_elf_generic_reloc, /* special_function */
227 "R_PPC_ADDR24", /* name */
228 FALSE, /* partial_inplace */
229 0, /* src_mask */
230 0x3fffffc, /* dst_mask */
231 FALSE), /* pcrel_offset */
232
233 /* A standard 16 bit relocation. */
234 HOWTO (R_PPC_ADDR16, /* type */
235 0, /* rightshift */
236 1, /* size (0 = byte, 1 = short, 2 = long) */
237 16, /* bitsize */
238 FALSE, /* pc_relative */
239 0, /* bitpos */
240 complain_overflow_bitfield, /* complain_on_overflow */
241 bfd_elf_generic_reloc, /* special_function */
242 "R_PPC_ADDR16", /* name */
243 FALSE, /* partial_inplace */
244 0, /* src_mask */
245 0xffff, /* dst_mask */
246 FALSE), /* pcrel_offset */
247
248 /* A 16 bit relocation without overflow. */
249 HOWTO (R_PPC_ADDR16_LO, /* type */
250 0, /* rightshift */
251 1, /* size (0 = byte, 1 = short, 2 = long) */
252 16, /* bitsize */
253 FALSE, /* pc_relative */
254 0, /* bitpos */
255 complain_overflow_dont,/* complain_on_overflow */
256 bfd_elf_generic_reloc, /* special_function */
257 "R_PPC_ADDR16_LO", /* name */
258 FALSE, /* partial_inplace */
259 0, /* src_mask */
260 0xffff, /* dst_mask */
261 FALSE), /* pcrel_offset */
262
263 /* The high order 16 bits of an address. */
264 HOWTO (R_PPC_ADDR16_HI, /* type */
265 16, /* rightshift */
266 1, /* size (0 = byte, 1 = short, 2 = long) */
267 16, /* bitsize */
268 FALSE, /* pc_relative */
269 0, /* bitpos */
270 complain_overflow_dont, /* complain_on_overflow */
271 bfd_elf_generic_reloc, /* special_function */
272 "R_PPC_ADDR16_HI", /* name */
273 FALSE, /* partial_inplace */
274 0, /* src_mask */
275 0xffff, /* dst_mask */
276 FALSE), /* pcrel_offset */
277
278 /* The high order 16 bits of an address, plus 1 if the contents of
279 the low 16 bits, treated as a signed number, is negative. */
280 HOWTO (R_PPC_ADDR16_HA, /* type */
281 16, /* rightshift */
282 1, /* size (0 = byte, 1 = short, 2 = long) */
283 16, /* bitsize */
284 FALSE, /* pc_relative */
285 0, /* bitpos */
286 complain_overflow_dont, /* complain_on_overflow */
287 ppc_elf_addr16_ha_reloc, /* special_function */
288 "R_PPC_ADDR16_HA", /* name */
289 FALSE, /* partial_inplace */
290 0, /* src_mask */
291 0xffff, /* dst_mask */
292 FALSE), /* pcrel_offset */
293
294 /* An absolute 16 bit branch; the lower two bits must be zero.
295 FIXME: we don't check that, we just clear them. */
296 HOWTO (R_PPC_ADDR14, /* type */
297 0, /* rightshift */
298 2, /* size (0 = byte, 1 = short, 2 = long) */
299 16, /* bitsize */
300 FALSE, /* pc_relative */
301 0, /* bitpos */
302 complain_overflow_signed, /* complain_on_overflow */
303 bfd_elf_generic_reloc, /* special_function */
304 "R_PPC_ADDR14", /* name */
305 FALSE, /* partial_inplace */
306 0, /* src_mask */
307 0xfffc, /* dst_mask */
308 FALSE), /* pcrel_offset */
309
310 /* An absolute 16 bit branch, for which bit 10 should be set to
311 indicate that the branch is expected to be taken. The lower two
312 bits must be zero. */
313 HOWTO (R_PPC_ADDR14_BRTAKEN, /* type */
314 0, /* rightshift */
315 2, /* size (0 = byte, 1 = short, 2 = long) */
316 16, /* bitsize */
317 FALSE, /* pc_relative */
318 0, /* bitpos */
319 complain_overflow_signed, /* complain_on_overflow */
320 bfd_elf_generic_reloc, /* special_function */
321 "R_PPC_ADDR14_BRTAKEN",/* name */
322 FALSE, /* partial_inplace */
323 0, /* src_mask */
324 0xfffc, /* dst_mask */
325 FALSE), /* pcrel_offset */
326
327 /* An absolute 16 bit branch, for which bit 10 should be set to
328 indicate that the branch is not expected to be taken. The lower
329 two bits must be zero. */
330 HOWTO (R_PPC_ADDR14_BRNTAKEN, /* type */
331 0, /* rightshift */
332 2, /* size (0 = byte, 1 = short, 2 = long) */
333 16, /* bitsize */
334 FALSE, /* pc_relative */
335 0, /* bitpos */
336 complain_overflow_signed, /* complain_on_overflow */
337 bfd_elf_generic_reloc, /* special_function */
338 "R_PPC_ADDR14_BRNTAKEN",/* name */
339 FALSE, /* partial_inplace */
340 0, /* src_mask */
341 0xfffc, /* dst_mask */
342 FALSE), /* pcrel_offset */
343
344 /* A relative 26 bit branch; the lower two bits must be zero. */
345 HOWTO (R_PPC_REL24, /* type */
346 0, /* rightshift */
347 2, /* size (0 = byte, 1 = short, 2 = long) */
348 26, /* bitsize */
349 TRUE, /* pc_relative */
350 0, /* bitpos */
351 complain_overflow_signed, /* complain_on_overflow */
352 bfd_elf_generic_reloc, /* special_function */
353 "R_PPC_REL24", /* name */
354 FALSE, /* partial_inplace */
355 0, /* src_mask */
356 0x3fffffc, /* dst_mask */
357 TRUE), /* pcrel_offset */
358
359 /* A relative 16 bit branch; the lower two bits must be zero. */
360 HOWTO (R_PPC_REL14, /* type */
361 0, /* rightshift */
362 2, /* size (0 = byte, 1 = short, 2 = long) */
363 16, /* bitsize */
364 TRUE, /* pc_relative */
365 0, /* bitpos */
366 complain_overflow_signed, /* complain_on_overflow */
367 bfd_elf_generic_reloc, /* special_function */
368 "R_PPC_REL14", /* name */
369 FALSE, /* partial_inplace */
370 0, /* src_mask */
371 0xfffc, /* dst_mask */
372 TRUE), /* pcrel_offset */
373
374 /* A relative 16 bit branch. Bit 10 should be set to indicate that
375 the branch is expected to be taken. The lower two bits must be
376 zero. */
377 HOWTO (R_PPC_REL14_BRTAKEN, /* type */
378 0, /* rightshift */
379 2, /* size (0 = byte, 1 = short, 2 = long) */
380 16, /* bitsize */
381 TRUE, /* pc_relative */
382 0, /* bitpos */
383 complain_overflow_signed, /* complain_on_overflow */
384 bfd_elf_generic_reloc, /* special_function */
385 "R_PPC_REL14_BRTAKEN", /* name */
386 FALSE, /* partial_inplace */
387 0, /* src_mask */
388 0xfffc, /* dst_mask */
389 TRUE), /* pcrel_offset */
390
391 /* A relative 16 bit branch. Bit 10 should be set to indicate that
392 the branch is not expected to be taken. The lower two bits must
393 be zero. */
394 HOWTO (R_PPC_REL14_BRNTAKEN, /* type */
395 0, /* rightshift */
396 2, /* size (0 = byte, 1 = short, 2 = long) */
397 16, /* bitsize */
398 TRUE, /* pc_relative */
399 0, /* bitpos */
400 complain_overflow_signed, /* complain_on_overflow */
401 bfd_elf_generic_reloc, /* special_function */
402 "R_PPC_REL14_BRNTAKEN",/* name */
403 FALSE, /* partial_inplace */
404 0, /* src_mask */
405 0xfffc, /* dst_mask */
406 TRUE), /* pcrel_offset */
407
408 /* Like R_PPC_ADDR16, but referring to the GOT table entry for the
409 symbol. */
410 HOWTO (R_PPC_GOT16, /* type */
411 0, /* rightshift */
412 1, /* size (0 = byte, 1 = short, 2 = long) */
413 16, /* bitsize */
414 FALSE, /* pc_relative */
415 0, /* bitpos */
416 complain_overflow_signed, /* complain_on_overflow */
417 ppc_elf_unhandled_reloc, /* special_function */
418 "R_PPC_GOT16", /* name */
419 FALSE, /* partial_inplace */
420 0, /* src_mask */
421 0xffff, /* dst_mask */
422 FALSE), /* pcrel_offset */
423
424 /* Like R_PPC_ADDR16_LO, but referring to the GOT table entry for
425 the symbol. */
426 HOWTO (R_PPC_GOT16_LO, /* type */
427 0, /* rightshift */
428 1, /* size (0 = byte, 1 = short, 2 = long) */
429 16, /* bitsize */
430 FALSE, /* pc_relative */
431 0, /* bitpos */
432 complain_overflow_dont, /* complain_on_overflow */
433 ppc_elf_unhandled_reloc, /* special_function */
434 "R_PPC_GOT16_LO", /* name */
435 FALSE, /* partial_inplace */
436 0, /* src_mask */
437 0xffff, /* dst_mask */
438 FALSE), /* pcrel_offset */
439
440 /* Like R_PPC_ADDR16_HI, but referring to the GOT table entry for
441 the symbol. */
442 HOWTO (R_PPC_GOT16_HI, /* type */
443 16, /* rightshift */
444 1, /* size (0 = byte, 1 = short, 2 = long) */
445 16, /* bitsize */
446 FALSE, /* pc_relative */
447 0, /* bitpos */
448 complain_overflow_dont, /* complain_on_overflow */
449 ppc_elf_unhandled_reloc, /* special_function */
450 "R_PPC_GOT16_HI", /* name */
451 FALSE, /* partial_inplace */
452 0, /* src_mask */
453 0xffff, /* dst_mask */
454 FALSE), /* pcrel_offset */
455
456 /* Like R_PPC_ADDR16_HA, but referring to the GOT table entry for
457 the symbol. */
458 HOWTO (R_PPC_GOT16_HA, /* type */
459 16, /* rightshift */
460 1, /* size (0 = byte, 1 = short, 2 = long) */
461 16, /* bitsize */
462 FALSE, /* pc_relative */
463 0, /* bitpos */
464 complain_overflow_dont, /* complain_on_overflow */
465 ppc_elf_unhandled_reloc, /* special_function */
466 "R_PPC_GOT16_HA", /* name */
467 FALSE, /* partial_inplace */
468 0, /* src_mask */
469 0xffff, /* dst_mask */
470 FALSE), /* pcrel_offset */
471
472 /* Like R_PPC_REL24, but referring to the procedure linkage table
473 entry for the symbol. */
474 HOWTO (R_PPC_PLTREL24, /* type */
475 0, /* rightshift */
476 2, /* size (0 = byte, 1 = short, 2 = long) */
477 26, /* bitsize */
478 TRUE, /* pc_relative */
479 0, /* bitpos */
480 complain_overflow_signed, /* complain_on_overflow */
481 ppc_elf_unhandled_reloc, /* special_function */
482 "R_PPC_PLTREL24", /* name */
483 FALSE, /* partial_inplace */
484 0, /* src_mask */
485 0x3fffffc, /* dst_mask */
486 TRUE), /* pcrel_offset */
487
488 /* This is used only by the dynamic linker. The symbol should exist
489 both in the object being run and in some shared library. The
490 dynamic linker copies the data addressed by the symbol from the
491 shared library into the object, because the object being
492 run has to have the data at some particular address. */
493 HOWTO (R_PPC_COPY, /* type */
494 0, /* rightshift */
495 2, /* size (0 = byte, 1 = short, 2 = long) */
496 32, /* bitsize */
497 FALSE, /* pc_relative */
498 0, /* bitpos */
499 complain_overflow_dont, /* complain_on_overflow */
500 ppc_elf_unhandled_reloc, /* special_function */
501 "R_PPC_COPY", /* name */
502 FALSE, /* partial_inplace */
503 0, /* src_mask */
504 0, /* dst_mask */
505 FALSE), /* pcrel_offset */
506
507 /* Like R_PPC_ADDR32, but used when setting global offset table
508 entries. */
509 HOWTO (R_PPC_GLOB_DAT, /* type */
510 0, /* rightshift */
511 2, /* size (0 = byte, 1 = short, 2 = long) */
512 32, /* bitsize */
513 FALSE, /* pc_relative */
514 0, /* bitpos */
515 complain_overflow_dont, /* complain_on_overflow */
516 ppc_elf_unhandled_reloc, /* special_function */
517 "R_PPC_GLOB_DAT", /* name */
518 FALSE, /* partial_inplace */
519 0, /* src_mask */
520 0xffffffff, /* dst_mask */
521 FALSE), /* pcrel_offset */
522
523 /* Marks a procedure linkage table entry for a symbol. */
524 HOWTO (R_PPC_JMP_SLOT, /* type */
525 0, /* rightshift */
526 2, /* size (0 = byte, 1 = short, 2 = long) */
527 32, /* bitsize */
528 FALSE, /* pc_relative */
529 0, /* bitpos */
530 complain_overflow_dont, /* complain_on_overflow */
531 ppc_elf_unhandled_reloc, /* special_function */
532 "R_PPC_JMP_SLOT", /* name */
533 FALSE, /* partial_inplace */
534 0, /* src_mask */
535 0, /* dst_mask */
536 FALSE), /* pcrel_offset */
537
538 /* Used only by the dynamic linker. When the object is run, this
539 longword is set to the load address of the object, plus the
540 addend. */
541 HOWTO (R_PPC_RELATIVE, /* type */
542 0, /* rightshift */
543 2, /* size (0 = byte, 1 = short, 2 = long) */
544 32, /* bitsize */
545 FALSE, /* pc_relative */
546 0, /* bitpos */
547 complain_overflow_dont, /* complain_on_overflow */
548 bfd_elf_generic_reloc, /* special_function */
549 "R_PPC_RELATIVE", /* name */
550 FALSE, /* partial_inplace */
551 0, /* src_mask */
552 0xffffffff, /* dst_mask */
553 FALSE), /* pcrel_offset */
554
555 /* Like R_PPC_REL24, but uses the value of the symbol within the
556 object rather than the final value. Normally used for
557 _GLOBAL_OFFSET_TABLE_. */
558 HOWTO (R_PPC_LOCAL24PC, /* type */
559 0, /* rightshift */
560 2, /* size (0 = byte, 1 = short, 2 = long) */
561 26, /* bitsize */
562 TRUE, /* pc_relative */
563 0, /* bitpos */
564 complain_overflow_signed, /* complain_on_overflow */
565 bfd_elf_generic_reloc, /* special_function */
566 "R_PPC_LOCAL24PC", /* name */
567 FALSE, /* partial_inplace */
568 0, /* src_mask */
569 0x3fffffc, /* dst_mask */
570 TRUE), /* pcrel_offset */
571
572 /* Like R_PPC_ADDR32, but may be unaligned. */
573 HOWTO (R_PPC_UADDR32, /* type */
574 0, /* rightshift */
575 2, /* size (0 = byte, 1 = short, 2 = long) */
576 32, /* bitsize */
577 FALSE, /* pc_relative */
578 0, /* bitpos */
579 complain_overflow_dont, /* complain_on_overflow */
580 bfd_elf_generic_reloc, /* special_function */
581 "R_PPC_UADDR32", /* name */
582 FALSE, /* partial_inplace */
583 0, /* src_mask */
584 0xffffffff, /* dst_mask */
585 FALSE), /* pcrel_offset */
586
587 /* Like R_PPC_ADDR16, but may be unaligned. */
588 HOWTO (R_PPC_UADDR16, /* type */
589 0, /* rightshift */
590 1, /* size (0 = byte, 1 = short, 2 = long) */
591 16, /* bitsize */
592 FALSE, /* pc_relative */
593 0, /* bitpos */
594 complain_overflow_bitfield, /* complain_on_overflow */
595 bfd_elf_generic_reloc, /* special_function */
596 "R_PPC_UADDR16", /* name */
597 FALSE, /* partial_inplace */
598 0, /* src_mask */
599 0xffff, /* dst_mask */
600 FALSE), /* pcrel_offset */
601
602 /* 32-bit PC relative */
603 HOWTO (R_PPC_REL32, /* type */
604 0, /* rightshift */
605 2, /* size (0 = byte, 1 = short, 2 = long) */
606 32, /* bitsize */
607 TRUE, /* pc_relative */
608 0, /* bitpos */
609 complain_overflow_dont, /* complain_on_overflow */
610 bfd_elf_generic_reloc, /* special_function */
611 "R_PPC_REL32", /* name */
612 FALSE, /* partial_inplace */
613 0, /* src_mask */
614 0xffffffff, /* dst_mask */
615 TRUE), /* pcrel_offset */
616
617 /* 32-bit relocation to the symbol's procedure linkage table.
618 FIXME: not supported. */
619 HOWTO (R_PPC_PLT32, /* type */
620 0, /* rightshift */
621 2, /* size (0 = byte, 1 = short, 2 = long) */
622 32, /* bitsize */
623 FALSE, /* pc_relative */
624 0, /* bitpos */
625 complain_overflow_dont, /* complain_on_overflow */
626 ppc_elf_unhandled_reloc, /* special_function */
627 "R_PPC_PLT32", /* name */
628 FALSE, /* partial_inplace */
629 0, /* src_mask */
630 0, /* dst_mask */
631 FALSE), /* pcrel_offset */
632
633 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
634 FIXME: not supported. */
635 HOWTO (R_PPC_PLTREL32, /* type */
636 0, /* rightshift */
637 2, /* size (0 = byte, 1 = short, 2 = long) */
638 32, /* bitsize */
639 TRUE, /* pc_relative */
640 0, /* bitpos */
641 complain_overflow_dont, /* complain_on_overflow */
642 ppc_elf_unhandled_reloc, /* special_function */
643 "R_PPC_PLTREL32", /* name */
644 FALSE, /* partial_inplace */
645 0, /* src_mask */
646 0, /* dst_mask */
647 TRUE), /* pcrel_offset */
648
649 /* Like R_PPC_ADDR16_LO, but referring to the PLT table entry for
650 the symbol. */
651 HOWTO (R_PPC_PLT16_LO, /* type */
652 0, /* rightshift */
653 1, /* size (0 = byte, 1 = short, 2 = long) */
654 16, /* bitsize */
655 FALSE, /* pc_relative */
656 0, /* bitpos */
657 complain_overflow_dont, /* complain_on_overflow */
658 ppc_elf_unhandled_reloc, /* special_function */
659 "R_PPC_PLT16_LO", /* name */
660 FALSE, /* partial_inplace */
661 0, /* src_mask */
662 0xffff, /* dst_mask */
663 FALSE), /* pcrel_offset */
664
665 /* Like R_PPC_ADDR16_HI, but referring to the PLT table entry for
666 the symbol. */
667 HOWTO (R_PPC_PLT16_HI, /* type */
668 16, /* rightshift */
669 1, /* size (0 = byte, 1 = short, 2 = long) */
670 16, /* bitsize */
671 FALSE, /* pc_relative */
672 0, /* bitpos */
673 complain_overflow_dont, /* complain_on_overflow */
674 ppc_elf_unhandled_reloc, /* special_function */
675 "R_PPC_PLT16_HI", /* name */
676 FALSE, /* partial_inplace */
677 0, /* src_mask */
678 0xffff, /* dst_mask */
679 FALSE), /* pcrel_offset */
680
681 /* Like R_PPC_ADDR16_HA, but referring to the PLT table entry for
682 the symbol. */
683 HOWTO (R_PPC_PLT16_HA, /* type */
684 16, /* rightshift */
685 1, /* size (0 = byte, 1 = short, 2 = long) */
686 16, /* bitsize */
687 FALSE, /* pc_relative */
688 0, /* bitpos */
689 complain_overflow_dont, /* complain_on_overflow */
690 ppc_elf_unhandled_reloc, /* special_function */
691 "R_PPC_PLT16_HA", /* name */
692 FALSE, /* partial_inplace */
693 0, /* src_mask */
694 0xffff, /* dst_mask */
695 FALSE), /* pcrel_offset */
696
697 /* A sign-extended 16 bit value relative to _SDA_BASE_, for use with
698 small data items. */
699 HOWTO (R_PPC_SDAREL16, /* type */
700 0, /* rightshift */
701 1, /* size (0 = byte, 1 = short, 2 = long) */
702 16, /* bitsize */
703 FALSE, /* pc_relative */
704 0, /* bitpos */
705 complain_overflow_signed, /* complain_on_overflow */
706 ppc_elf_unhandled_reloc, /* special_function */
707 "R_PPC_SDAREL16", /* name */
708 FALSE, /* partial_inplace */
709 0, /* src_mask */
710 0xffff, /* dst_mask */
711 FALSE), /* pcrel_offset */
712
713 /* 16-bit section relative relocation. */
714 HOWTO (R_PPC_SECTOFF, /* type */
715 0, /* rightshift */
716 1, /* size (0 = byte, 1 = short, 2 = long) */
717 16, /* bitsize */
718 FALSE, /* pc_relative */
719 0, /* bitpos */
720 complain_overflow_signed, /* complain_on_overflow */
721 ppc_elf_unhandled_reloc, /* special_function */
722 "R_PPC_SECTOFF", /* name */
723 FALSE, /* partial_inplace */
724 0, /* src_mask */
725 0xffff, /* dst_mask */
726 FALSE), /* pcrel_offset */
727
728 /* 16-bit lower half section relative relocation. */
729 HOWTO (R_PPC_SECTOFF_LO, /* type */
730 0, /* rightshift */
731 1, /* size (0 = byte, 1 = short, 2 = long) */
732 16, /* bitsize */
733 FALSE, /* pc_relative */
734 0, /* bitpos */
735 complain_overflow_dont, /* complain_on_overflow */
736 ppc_elf_unhandled_reloc, /* special_function */
737 "R_PPC_SECTOFF_LO", /* name */
738 FALSE, /* partial_inplace */
739 0, /* src_mask */
740 0xffff, /* dst_mask */
741 FALSE), /* pcrel_offset */
742
743 /* 16-bit upper half section relative relocation. */
744 HOWTO (R_PPC_SECTOFF_HI, /* type */
745 16, /* rightshift */
746 1, /* size (0 = byte, 1 = short, 2 = long) */
747 16, /* bitsize */
748 FALSE, /* pc_relative */
749 0, /* bitpos */
750 complain_overflow_dont, /* complain_on_overflow */
751 ppc_elf_unhandled_reloc, /* special_function */
752 "R_PPC_SECTOFF_HI", /* name */
753 FALSE, /* partial_inplace */
754 0, /* src_mask */
755 0xffff, /* dst_mask */
756 FALSE), /* pcrel_offset */
757
758 /* 16-bit upper half adjusted section relative relocation. */
759 HOWTO (R_PPC_SECTOFF_HA, /* type */
760 16, /* rightshift */
761 1, /* size (0 = byte, 1 = short, 2 = long) */
762 16, /* bitsize */
763 FALSE, /* pc_relative */
764 0, /* bitpos */
765 complain_overflow_dont, /* complain_on_overflow */
766 ppc_elf_unhandled_reloc, /* special_function */
767 "R_PPC_SECTOFF_HA", /* name */
768 FALSE, /* partial_inplace */
769 0, /* src_mask */
770 0xffff, /* dst_mask */
771 FALSE), /* pcrel_offset */
772
773 /* Marker relocs for TLS. */
774 HOWTO (R_PPC_TLS,
775 0, /* rightshift */
776 2, /* size (0 = byte, 1 = short, 2 = long) */
777 32, /* bitsize */
778 FALSE, /* pc_relative */
779 0, /* bitpos */
780 complain_overflow_dont, /* complain_on_overflow */
781 bfd_elf_generic_reloc, /* special_function */
782 "R_PPC_TLS", /* name */
783 FALSE, /* partial_inplace */
784 0, /* src_mask */
785 0, /* dst_mask */
786 FALSE), /* pcrel_offset */
787
788 HOWTO (R_PPC_TLSGD,
789 0, /* rightshift */
790 2, /* size (0 = byte, 1 = short, 2 = long) */
791 32, /* bitsize */
792 FALSE, /* pc_relative */
793 0, /* bitpos */
794 complain_overflow_dont, /* complain_on_overflow */
795 bfd_elf_generic_reloc, /* special_function */
796 "R_PPC_TLSGD", /* name */
797 FALSE, /* partial_inplace */
798 0, /* src_mask */
799 0, /* dst_mask */
800 FALSE), /* pcrel_offset */
801
802 HOWTO (R_PPC_TLSLD,
803 0, /* rightshift */
804 2, /* size (0 = byte, 1 = short, 2 = long) */
805 32, /* bitsize */
806 FALSE, /* pc_relative */
807 0, /* bitpos */
808 complain_overflow_dont, /* complain_on_overflow */
809 bfd_elf_generic_reloc, /* special_function */
810 "R_PPC_TLSLD", /* name */
811 FALSE, /* partial_inplace */
812 0, /* src_mask */
813 0, /* dst_mask */
814 FALSE), /* pcrel_offset */
815
816 /* Computes the load module index of the load module that contains the
817 definition of its TLS sym. */
818 HOWTO (R_PPC_DTPMOD32,
819 0, /* rightshift */
820 2, /* size (0 = byte, 1 = short, 2 = long) */
821 32, /* bitsize */
822 FALSE, /* pc_relative */
823 0, /* bitpos */
824 complain_overflow_dont, /* complain_on_overflow */
825 ppc_elf_unhandled_reloc, /* special_function */
826 "R_PPC_DTPMOD32", /* name */
827 FALSE, /* partial_inplace */
828 0, /* src_mask */
829 0xffffffff, /* dst_mask */
830 FALSE), /* pcrel_offset */
831
832 /* Computes a dtv-relative displacement, the difference between the value
833 of sym+add and the base address of the thread-local storage block that
834 contains the definition of sym, minus 0x8000. */
835 HOWTO (R_PPC_DTPREL32,
836 0, /* rightshift */
837 2, /* size (0 = byte, 1 = short, 2 = long) */
838 32, /* bitsize */
839 FALSE, /* pc_relative */
840 0, /* bitpos */
841 complain_overflow_dont, /* complain_on_overflow */
842 ppc_elf_unhandled_reloc, /* special_function */
843 "R_PPC_DTPREL32", /* name */
844 FALSE, /* partial_inplace */
845 0, /* src_mask */
846 0xffffffff, /* dst_mask */
847 FALSE), /* pcrel_offset */
848
849 /* A 16 bit dtprel reloc. */
850 HOWTO (R_PPC_DTPREL16,
851 0, /* rightshift */
852 1, /* size (0 = byte, 1 = short, 2 = long) */
853 16, /* bitsize */
854 FALSE, /* pc_relative */
855 0, /* bitpos */
856 complain_overflow_signed, /* complain_on_overflow */
857 ppc_elf_unhandled_reloc, /* special_function */
858 "R_PPC_DTPREL16", /* name */
859 FALSE, /* partial_inplace */
860 0, /* src_mask */
861 0xffff, /* dst_mask */
862 FALSE), /* pcrel_offset */
863
864 /* Like DTPREL16, but no overflow. */
865 HOWTO (R_PPC_DTPREL16_LO,
866 0, /* rightshift */
867 1, /* size (0 = byte, 1 = short, 2 = long) */
868 16, /* bitsize */
869 FALSE, /* pc_relative */
870 0, /* bitpos */
871 complain_overflow_dont, /* complain_on_overflow */
872 ppc_elf_unhandled_reloc, /* special_function */
873 "R_PPC_DTPREL16_LO", /* name */
874 FALSE, /* partial_inplace */
875 0, /* src_mask */
876 0xffff, /* dst_mask */
877 FALSE), /* pcrel_offset */
878
879 /* Like DTPREL16_LO, but next higher group of 16 bits. */
880 HOWTO (R_PPC_DTPREL16_HI,
881 16, /* rightshift */
882 1, /* size (0 = byte, 1 = short, 2 = long) */
883 16, /* bitsize */
884 FALSE, /* pc_relative */
885 0, /* bitpos */
886 complain_overflow_dont, /* complain_on_overflow */
887 ppc_elf_unhandled_reloc, /* special_function */
888 "R_PPC_DTPREL16_HI", /* name */
889 FALSE, /* partial_inplace */
890 0, /* src_mask */
891 0xffff, /* dst_mask */
892 FALSE), /* pcrel_offset */
893
894 /* Like DTPREL16_HI, but adjust for low 16 bits. */
895 HOWTO (R_PPC_DTPREL16_HA,
896 16, /* rightshift */
897 1, /* size (0 = byte, 1 = short, 2 = long) */
898 16, /* bitsize */
899 FALSE, /* pc_relative */
900 0, /* bitpos */
901 complain_overflow_dont, /* complain_on_overflow */
902 ppc_elf_unhandled_reloc, /* special_function */
903 "R_PPC_DTPREL16_HA", /* name */
904 FALSE, /* partial_inplace */
905 0, /* src_mask */
906 0xffff, /* dst_mask */
907 FALSE), /* pcrel_offset */
908
909 /* Computes a tp-relative displacement, the difference between the value of
910 sym+add and the value of the thread pointer (r13). */
911 HOWTO (R_PPC_TPREL32,
912 0, /* rightshift */
913 2, /* size (0 = byte, 1 = short, 2 = long) */
914 32, /* bitsize */
915 FALSE, /* pc_relative */
916 0, /* bitpos */
917 complain_overflow_dont, /* complain_on_overflow */
918 ppc_elf_unhandled_reloc, /* special_function */
919 "R_PPC_TPREL32", /* name */
920 FALSE, /* partial_inplace */
921 0, /* src_mask */
922 0xffffffff, /* dst_mask */
923 FALSE), /* pcrel_offset */
924
925 /* A 16 bit tprel reloc. */
926 HOWTO (R_PPC_TPREL16,
927 0, /* rightshift */
928 1, /* size (0 = byte, 1 = short, 2 = long) */
929 16, /* bitsize */
930 FALSE, /* pc_relative */
931 0, /* bitpos */
932 complain_overflow_signed, /* complain_on_overflow */
933 ppc_elf_unhandled_reloc, /* special_function */
934 "R_PPC_TPREL16", /* name */
935 FALSE, /* partial_inplace */
936 0, /* src_mask */
937 0xffff, /* dst_mask */
938 FALSE), /* pcrel_offset */
939
940 /* Like TPREL16, but no overflow. */
941 HOWTO (R_PPC_TPREL16_LO,
942 0, /* rightshift */
943 1, /* size (0 = byte, 1 = short, 2 = long) */
944 16, /* bitsize */
945 FALSE, /* pc_relative */
946 0, /* bitpos */
947 complain_overflow_dont, /* complain_on_overflow */
948 ppc_elf_unhandled_reloc, /* special_function */
949 "R_PPC_TPREL16_LO", /* name */
950 FALSE, /* partial_inplace */
951 0, /* src_mask */
952 0xffff, /* dst_mask */
953 FALSE), /* pcrel_offset */
954
955 /* Like TPREL16_LO, but next higher group of 16 bits. */
956 HOWTO (R_PPC_TPREL16_HI,
957 16, /* rightshift */
958 1, /* size (0 = byte, 1 = short, 2 = long) */
959 16, /* bitsize */
960 FALSE, /* pc_relative */
961 0, /* bitpos */
962 complain_overflow_dont, /* complain_on_overflow */
963 ppc_elf_unhandled_reloc, /* special_function */
964 "R_PPC_TPREL16_HI", /* name */
965 FALSE, /* partial_inplace */
966 0, /* src_mask */
967 0xffff, /* dst_mask */
968 FALSE), /* pcrel_offset */
969
970 /* Like TPREL16_HI, but adjust for low 16 bits. */
971 HOWTO (R_PPC_TPREL16_HA,
972 16, /* rightshift */
973 1, /* size (0 = byte, 1 = short, 2 = long) */
974 16, /* bitsize */
975 FALSE, /* pc_relative */
976 0, /* bitpos */
977 complain_overflow_dont, /* complain_on_overflow */
978 ppc_elf_unhandled_reloc, /* special_function */
979 "R_PPC_TPREL16_HA", /* name */
980 FALSE, /* partial_inplace */
981 0, /* src_mask */
982 0xffff, /* dst_mask */
983 FALSE), /* pcrel_offset */
984
985 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
986 with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
987 to the first entry. */
988 HOWTO (R_PPC_GOT_TLSGD16,
989 0, /* rightshift */
990 1, /* size (0 = byte, 1 = short, 2 = long) */
991 16, /* bitsize */
992 FALSE, /* pc_relative */
993 0, /* bitpos */
994 complain_overflow_signed, /* complain_on_overflow */
995 ppc_elf_unhandled_reloc, /* special_function */
996 "R_PPC_GOT_TLSGD16", /* name */
997 FALSE, /* partial_inplace */
998 0, /* src_mask */
999 0xffff, /* dst_mask */
1000 FALSE), /* pcrel_offset */
1001
1002 /* Like GOT_TLSGD16, but no overflow. */
1003 HOWTO (R_PPC_GOT_TLSGD16_LO,
1004 0, /* rightshift */
1005 1, /* size (0 = byte, 1 = short, 2 = long) */
1006 16, /* bitsize */
1007 FALSE, /* pc_relative */
1008 0, /* bitpos */
1009 complain_overflow_dont, /* complain_on_overflow */
1010 ppc_elf_unhandled_reloc, /* special_function */
1011 "R_PPC_GOT_TLSGD16_LO", /* name */
1012 FALSE, /* partial_inplace */
1013 0, /* src_mask */
1014 0xffff, /* dst_mask */
1015 FALSE), /* pcrel_offset */
1016
1017 /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
1018 HOWTO (R_PPC_GOT_TLSGD16_HI,
1019 16, /* rightshift */
1020 1, /* size (0 = byte, 1 = short, 2 = long) */
1021 16, /* bitsize */
1022 FALSE, /* pc_relative */
1023 0, /* bitpos */
1024 complain_overflow_dont, /* complain_on_overflow */
1025 ppc_elf_unhandled_reloc, /* special_function */
1026 "R_PPC_GOT_TLSGD16_HI", /* name */
1027 FALSE, /* partial_inplace */
1028 0, /* src_mask */
1029 0xffff, /* dst_mask */
1030 FALSE), /* pcrel_offset */
1031
1032 /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
1033 HOWTO (R_PPC_GOT_TLSGD16_HA,
1034 16, /* rightshift */
1035 1, /* size (0 = byte, 1 = short, 2 = long) */
1036 16, /* bitsize */
1037 FALSE, /* pc_relative */
1038 0, /* bitpos */
1039 complain_overflow_dont, /* complain_on_overflow */
1040 ppc_elf_unhandled_reloc, /* special_function */
1041 "R_PPC_GOT_TLSGD16_HA", /* name */
1042 FALSE, /* partial_inplace */
1043 0, /* src_mask */
1044 0xffff, /* dst_mask */
1045 FALSE), /* pcrel_offset */
1046
1047 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1048 with values (sym+add)@dtpmod and zero, and computes the offset to the
1049 first entry. */
1050 HOWTO (R_PPC_GOT_TLSLD16,
1051 0, /* rightshift */
1052 1, /* size (0 = byte, 1 = short, 2 = long) */
1053 16, /* bitsize */
1054 FALSE, /* pc_relative */
1055 0, /* bitpos */
1056 complain_overflow_signed, /* complain_on_overflow */
1057 ppc_elf_unhandled_reloc, /* special_function */
1058 "R_PPC_GOT_TLSLD16", /* name */
1059 FALSE, /* partial_inplace */
1060 0, /* src_mask */
1061 0xffff, /* dst_mask */
1062 FALSE), /* pcrel_offset */
1063
1064 /* Like GOT_TLSLD16, but no overflow. */
1065 HOWTO (R_PPC_GOT_TLSLD16_LO,
1066 0, /* rightshift */
1067 1, /* size (0 = byte, 1 = short, 2 = long) */
1068 16, /* bitsize */
1069 FALSE, /* pc_relative */
1070 0, /* bitpos */
1071 complain_overflow_dont, /* complain_on_overflow */
1072 ppc_elf_unhandled_reloc, /* special_function */
1073 "R_PPC_GOT_TLSLD16_LO", /* name */
1074 FALSE, /* partial_inplace */
1075 0, /* src_mask */
1076 0xffff, /* dst_mask */
1077 FALSE), /* pcrel_offset */
1078
1079 /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
1080 HOWTO (R_PPC_GOT_TLSLD16_HI,
1081 16, /* rightshift */
1082 1, /* size (0 = byte, 1 = short, 2 = long) */
1083 16, /* bitsize */
1084 FALSE, /* pc_relative */
1085 0, /* bitpos */
1086 complain_overflow_dont, /* complain_on_overflow */
1087 ppc_elf_unhandled_reloc, /* special_function */
1088 "R_PPC_GOT_TLSLD16_HI", /* name */
1089 FALSE, /* partial_inplace */
1090 0, /* src_mask */
1091 0xffff, /* dst_mask */
1092 FALSE), /* pcrel_offset */
1093
1094 /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
1095 HOWTO (R_PPC_GOT_TLSLD16_HA,
1096 16, /* rightshift */
1097 1, /* size (0 = byte, 1 = short, 2 = long) */
1098 16, /* bitsize */
1099 FALSE, /* pc_relative */
1100 0, /* bitpos */
1101 complain_overflow_dont, /* complain_on_overflow */
1102 ppc_elf_unhandled_reloc, /* special_function */
1103 "R_PPC_GOT_TLSLD16_HA", /* name */
1104 FALSE, /* partial_inplace */
1105 0, /* src_mask */
1106 0xffff, /* dst_mask */
1107 FALSE), /* pcrel_offset */
1108
1109 /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
1110 the offset to the entry. */
1111 HOWTO (R_PPC_GOT_DTPREL16,
1112 0, /* rightshift */
1113 1, /* size (0 = byte, 1 = short, 2 = long) */
1114 16, /* bitsize */
1115 FALSE, /* pc_relative */
1116 0, /* bitpos */
1117 complain_overflow_signed, /* complain_on_overflow */
1118 ppc_elf_unhandled_reloc, /* special_function */
1119 "R_PPC_GOT_DTPREL16", /* name */
1120 FALSE, /* partial_inplace */
1121 0, /* src_mask */
1122 0xffff, /* dst_mask */
1123 FALSE), /* pcrel_offset */
1124
1125 /* Like GOT_DTPREL16, but no overflow. */
1126 HOWTO (R_PPC_GOT_DTPREL16_LO,
1127 0, /* rightshift */
1128 1, /* size (0 = byte, 1 = short, 2 = long) */
1129 16, /* bitsize */
1130 FALSE, /* pc_relative */
1131 0, /* bitpos */
1132 complain_overflow_dont, /* complain_on_overflow */
1133 ppc_elf_unhandled_reloc, /* special_function */
1134 "R_PPC_GOT_DTPREL16_LO", /* name */
1135 FALSE, /* partial_inplace */
1136 0, /* src_mask */
1137 0xffff, /* dst_mask */
1138 FALSE), /* pcrel_offset */
1139
1140 /* Like GOT_DTPREL16_LO, but next higher group of 16 bits. */
1141 HOWTO (R_PPC_GOT_DTPREL16_HI,
1142 16, /* rightshift */
1143 1, /* size (0 = byte, 1 = short, 2 = long) */
1144 16, /* bitsize */
1145 FALSE, /* pc_relative */
1146 0, /* bitpos */
1147 complain_overflow_dont, /* complain_on_overflow */
1148 ppc_elf_unhandled_reloc, /* special_function */
1149 "R_PPC_GOT_DTPREL16_HI", /* name */
1150 FALSE, /* partial_inplace */
1151 0, /* src_mask */
1152 0xffff, /* dst_mask */
1153 FALSE), /* pcrel_offset */
1154
1155 /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
1156 HOWTO (R_PPC_GOT_DTPREL16_HA,
1157 16, /* rightshift */
1158 1, /* size (0 = byte, 1 = short, 2 = long) */
1159 16, /* bitsize */
1160 FALSE, /* pc_relative */
1161 0, /* bitpos */
1162 complain_overflow_dont, /* complain_on_overflow */
1163 ppc_elf_unhandled_reloc, /* special_function */
1164 "R_PPC_GOT_DTPREL16_HA", /* name */
1165 FALSE, /* partial_inplace */
1166 0, /* src_mask */
1167 0xffff, /* dst_mask */
1168 FALSE), /* pcrel_offset */
1169
1170 /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
1171 offset to the entry. */
1172 HOWTO (R_PPC_GOT_TPREL16,
1173 0, /* rightshift */
1174 1, /* size (0 = byte, 1 = short, 2 = long) */
1175 16, /* bitsize */
1176 FALSE, /* pc_relative */
1177 0, /* bitpos */
1178 complain_overflow_signed, /* complain_on_overflow */
1179 ppc_elf_unhandled_reloc, /* special_function */
1180 "R_PPC_GOT_TPREL16", /* name */
1181 FALSE, /* partial_inplace */
1182 0, /* src_mask */
1183 0xffff, /* dst_mask */
1184 FALSE), /* pcrel_offset */
1185
1186 /* Like GOT_TPREL16, but no overflow. */
1187 HOWTO (R_PPC_GOT_TPREL16_LO,
1188 0, /* rightshift */
1189 1, /* size (0 = byte, 1 = short, 2 = long) */
1190 16, /* bitsize */
1191 FALSE, /* pc_relative */
1192 0, /* bitpos */
1193 complain_overflow_dont, /* complain_on_overflow */
1194 ppc_elf_unhandled_reloc, /* special_function */
1195 "R_PPC_GOT_TPREL16_LO", /* name */
1196 FALSE, /* partial_inplace */
1197 0, /* src_mask */
1198 0xffff, /* dst_mask */
1199 FALSE), /* pcrel_offset */
1200
1201 /* Like GOT_TPREL16_LO, but next higher group of 16 bits. */
1202 HOWTO (R_PPC_GOT_TPREL16_HI,
1203 16, /* rightshift */
1204 1, /* size (0 = byte, 1 = short, 2 = long) */
1205 16, /* bitsize */
1206 FALSE, /* pc_relative */
1207 0, /* bitpos */
1208 complain_overflow_dont, /* complain_on_overflow */
1209 ppc_elf_unhandled_reloc, /* special_function */
1210 "R_PPC_GOT_TPREL16_HI", /* name */
1211 FALSE, /* partial_inplace */
1212 0, /* src_mask */
1213 0xffff, /* dst_mask */
1214 FALSE), /* pcrel_offset */
1215
1216 /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
1217 HOWTO (R_PPC_GOT_TPREL16_HA,
1218 16, /* rightshift */
1219 1, /* size (0 = byte, 1 = short, 2 = long) */
1220 16, /* bitsize */
1221 FALSE, /* pc_relative */
1222 0, /* bitpos */
1223 complain_overflow_dont, /* complain_on_overflow */
1224 ppc_elf_unhandled_reloc, /* special_function */
1225 "R_PPC_GOT_TPREL16_HA", /* name */
1226 FALSE, /* partial_inplace */
1227 0, /* src_mask */
1228 0xffff, /* dst_mask */
1229 FALSE), /* pcrel_offset */
1230
1231 /* The remaining relocs are from the Embedded ELF ABI, and are not
1232 in the SVR4 ELF ABI. */
1233
1234 /* 32 bit value resulting from the addend minus the symbol. */
1235 HOWTO (R_PPC_EMB_NADDR32, /* type */
1236 0, /* rightshift */
1237 2, /* size (0 = byte, 1 = short, 2 = long) */
1238 32, /* bitsize */
1239 FALSE, /* pc_relative */
1240 0, /* bitpos */
1241 complain_overflow_dont, /* complain_on_overflow */
1242 ppc_elf_unhandled_reloc, /* special_function */
1243 "R_PPC_EMB_NADDR32", /* name */
1244 FALSE, /* partial_inplace */
1245 0, /* src_mask */
1246 0xffffffff, /* dst_mask */
1247 FALSE), /* pcrel_offset */
1248
1249 /* 16 bit value resulting from the addend minus the symbol. */
1250 HOWTO (R_PPC_EMB_NADDR16, /* type */
1251 0, /* rightshift */
1252 1, /* size (0 = byte, 1 = short, 2 = long) */
1253 16, /* bitsize */
1254 FALSE, /* pc_relative */
1255 0, /* bitpos */
1256 complain_overflow_signed, /* complain_on_overflow */
1257 ppc_elf_unhandled_reloc, /* special_function */
1258 "R_PPC_EMB_NADDR16", /* name */
1259 FALSE, /* partial_inplace */
1260 0, /* src_mask */
1261 0xffff, /* dst_mask */
1262 FALSE), /* pcrel_offset */
1263
1264 /* 16 bit value resulting from the addend minus the symbol. */
1265 HOWTO (R_PPC_EMB_NADDR16_LO, /* type */
1266 0, /* rightshift */
1267 1, /* size (0 = byte, 1 = short, 2 = long) */
1268 16, /* bitsize */
1269 FALSE, /* pc_relative */
1270 0, /* bitpos */
1271 complain_overflow_dont,/* complain_on_overflow */
1272 ppc_elf_unhandled_reloc, /* special_function */
1273 "R_PPC_EMB_ADDR16_LO", /* name */
1274 FALSE, /* partial_inplace */
1275 0, /* src_mask */
1276 0xffff, /* dst_mask */
1277 FALSE), /* pcrel_offset */
1278
1279 /* The high order 16 bits of the addend minus the symbol. */
1280 HOWTO (R_PPC_EMB_NADDR16_HI, /* type */
1281 16, /* rightshift */
1282 1, /* size (0 = byte, 1 = short, 2 = long) */
1283 16, /* bitsize */
1284 FALSE, /* pc_relative */
1285 0, /* bitpos */
1286 complain_overflow_dont, /* complain_on_overflow */
1287 ppc_elf_unhandled_reloc, /* special_function */
1288 "R_PPC_EMB_NADDR16_HI", /* name */
1289 FALSE, /* partial_inplace */
1290 0, /* src_mask */
1291 0xffff, /* dst_mask */
1292 FALSE), /* pcrel_offset */
1293
1294 /* The high order 16 bits of the result of the addend minus the address,
1295 plus 1 if the contents of the low 16 bits, treated as a signed number,
1296 is negative. */
1297 HOWTO (R_PPC_EMB_NADDR16_HA, /* type */
1298 16, /* rightshift */
1299 1, /* size (0 = byte, 1 = short, 2 = long) */
1300 16, /* bitsize */
1301 FALSE, /* pc_relative */
1302 0, /* bitpos */
1303 complain_overflow_dont, /* complain_on_overflow */
1304 ppc_elf_unhandled_reloc, /* special_function */
1305 "R_PPC_EMB_NADDR16_HA", /* name */
1306 FALSE, /* partial_inplace */
1307 0, /* src_mask */
1308 0xffff, /* dst_mask */
1309 FALSE), /* pcrel_offset */
1310
1311 /* 16 bit value resulting from allocating a 4 byte word to hold an
1312 address in the .sdata section, and returning the offset from
1313 _SDA_BASE_ for that relocation. */
1314 HOWTO (R_PPC_EMB_SDAI16, /* type */
1315 0, /* rightshift */
1316 1, /* size (0 = byte, 1 = short, 2 = long) */
1317 16, /* bitsize */
1318 FALSE, /* pc_relative */
1319 0, /* bitpos */
1320 complain_overflow_signed, /* complain_on_overflow */
1321 ppc_elf_unhandled_reloc, /* special_function */
1322 "R_PPC_EMB_SDAI16", /* name */
1323 FALSE, /* partial_inplace */
1324 0, /* src_mask */
1325 0xffff, /* dst_mask */
1326 FALSE), /* pcrel_offset */
1327
1328 /* 16 bit value resulting from allocating a 4 byte word to hold an
1329 address in the .sdata2 section, and returning the offset from
1330 _SDA2_BASE_ for that relocation. */
1331 HOWTO (R_PPC_EMB_SDA2I16, /* type */
1332 0, /* rightshift */
1333 1, /* size (0 = byte, 1 = short, 2 = long) */
1334 16, /* bitsize */
1335 FALSE, /* pc_relative */
1336 0, /* bitpos */
1337 complain_overflow_signed, /* complain_on_overflow */
1338 ppc_elf_unhandled_reloc, /* special_function */
1339 "R_PPC_EMB_SDA2I16", /* name */
1340 FALSE, /* partial_inplace */
1341 0, /* src_mask */
1342 0xffff, /* dst_mask */
1343 FALSE), /* pcrel_offset */
1344
1345 /* A sign-extended 16 bit value relative to _SDA2_BASE_, for use with
1346 small data items. */
1347 HOWTO (R_PPC_EMB_SDA2REL, /* type */
1348 0, /* rightshift */
1349 1, /* size (0 = byte, 1 = short, 2 = long) */
1350 16, /* bitsize */
1351 FALSE, /* pc_relative */
1352 0, /* bitpos */
1353 complain_overflow_signed, /* complain_on_overflow */
1354 ppc_elf_unhandled_reloc, /* special_function */
1355 "R_PPC_EMB_SDA2REL", /* name */
1356 FALSE, /* partial_inplace */
1357 0, /* src_mask */
1358 0xffff, /* dst_mask */
1359 FALSE), /* pcrel_offset */
1360
1361 /* Relocate against either _SDA_BASE_ or _SDA2_BASE_, filling in the 16 bit
1362 signed offset from the appropriate base, and filling in the register
1363 field with the appropriate register (0, 2, or 13). */
1364 HOWTO (R_PPC_EMB_SDA21, /* type */
1365 0, /* rightshift */
1366 2, /* size (0 = byte, 1 = short, 2 = long) */
1367 16, /* bitsize */
1368 FALSE, /* pc_relative */
1369 0, /* bitpos */
1370 complain_overflow_signed, /* complain_on_overflow */
1371 ppc_elf_unhandled_reloc, /* special_function */
1372 "R_PPC_EMB_SDA21", /* name */
1373 FALSE, /* partial_inplace */
1374 0, /* src_mask */
1375 0xffff, /* dst_mask */
1376 FALSE), /* pcrel_offset */
1377
1378 /* Relocation not handled: R_PPC_EMB_MRKREF */
1379 /* Relocation not handled: R_PPC_EMB_RELSEC16 */
1380 /* Relocation not handled: R_PPC_EMB_RELST_LO */
1381 /* Relocation not handled: R_PPC_EMB_RELST_HI */
1382 /* Relocation not handled: R_PPC_EMB_RELST_HA */
1383 /* Relocation not handled: R_PPC_EMB_BIT_FLD */
1384
1385 /* PC relative relocation against either _SDA_BASE_ or _SDA2_BASE_, filling
1386 in the 16 bit signed offset from the appropriate base, and filling in the
1387 register field with the appropriate register (0, 2, or 13). */
1388 HOWTO (R_PPC_EMB_RELSDA, /* type */
1389 0, /* rightshift */
1390 1, /* size (0 = byte, 1 = short, 2 = long) */
1391 16, /* bitsize */
1392 FALSE, /* pc_relative */
1393 0, /* bitpos */
1394 complain_overflow_signed, /* complain_on_overflow */
1395 ppc_elf_unhandled_reloc, /* special_function */
1396 "R_PPC_EMB_RELSDA", /* name */
1397 FALSE, /* partial_inplace */
1398 0, /* src_mask */
1399 0xffff, /* dst_mask */
1400 FALSE), /* pcrel_offset */
1401
1402 /* A relative 8 bit branch. */
1403 HOWTO (R_PPC_VLE_REL8, /* type */
1404 1, /* rightshift */
1405 1, /* size (0 = byte, 1 = short, 2 = long) */
1406 8, /* bitsize */
1407 TRUE, /* pc_relative */
1408 0, /* bitpos */
1409 complain_overflow_signed, /* complain_on_overflow */
1410 bfd_elf_generic_reloc, /* special_function */
1411 "R_PPC_VLE_REL8", /* name */
1412 FALSE, /* partial_inplace */
1413 0, /* src_mask */
1414 0xff, /* dst_mask */
1415 TRUE), /* pcrel_offset */
1416
1417 /* A relative 15 bit branch. */
1418 HOWTO (R_PPC_VLE_REL15, /* type */
1419 1, /* rightshift */
1420 2, /* size (0 = byte, 1 = short, 2 = long) */
1421 15, /* bitsize */
1422 TRUE, /* pc_relative */
1423 1, /* bitpos */
1424 complain_overflow_signed, /* complain_on_overflow */
1425 bfd_elf_generic_reloc, /* special_function */
1426 "R_PPC_VLE_REL15", /* name */
1427 FALSE, /* partial_inplace */
1428 0, /* src_mask */
1429 0xfffe, /* dst_mask */
1430 TRUE), /* pcrel_offset */
1431
1432 /* A relative 24 bit branch. */
1433 HOWTO (R_PPC_VLE_REL24, /* type */
1434 1, /* rightshift */
1435 2, /* size (0 = byte, 1 = short, 2 = long) */
1436 24, /* bitsize */
1437 TRUE, /* pc_relative */
1438 1, /* bitpos */
1439 complain_overflow_signed, /* complain_on_overflow */
1440 bfd_elf_generic_reloc, /* special_function */
1441 "R_PPC_VLE_REL24", /* name */
1442 FALSE, /* partial_inplace */
1443 0, /* src_mask */
1444 0x1fffffe, /* dst_mask */
1445 TRUE), /* pcrel_offset */
1446
1447 /* The 16 LSBS in split16a format. */
1448 HOWTO (R_PPC_VLE_LO16A, /* type */
1449 0, /* rightshift */
1450 2, /* size (0 = byte, 1 = short, 2 = long) */
1451 16, /* bitsize */
1452 FALSE, /* pc_relative */
1453 0, /* bitpos */
1454 complain_overflow_dont, /* complain_on_overflow */
1455 ppc_elf_unhandled_reloc, /* special_function */
1456 "R_PPC_VLE_LO16A", /* name */
1457 FALSE, /* partial_inplace */
1458 0, /* src_mask */
1459 0x1f07ff, /* dst_mask */
1460 FALSE), /* pcrel_offset */
1461
1462 /* The 16 LSBS in split16d format. */
1463 HOWTO (R_PPC_VLE_LO16D, /* type */
1464 0, /* rightshift */
1465 2, /* size (0 = byte, 1 = short, 2 = long) */
1466 16, /* bitsize */
1467 FALSE, /* pc_relative */
1468 0, /* bitpos */
1469 complain_overflow_dont, /* complain_on_overflow */
1470 ppc_elf_unhandled_reloc, /* special_function */
1471 "R_PPC_VLE_LO16D", /* name */
1472 FALSE, /* partial_inplace */
1473 0, /* src_mask */
1474 0x3e007ff, /* dst_mask */
1475 FALSE), /* pcrel_offset */
1476
1477 /* Bits 16-31 split16a format. */
1478 HOWTO (R_PPC_VLE_HI16A, /* type */
1479 16, /* rightshift */
1480 2, /* size (0 = byte, 1 = short, 2 = long) */
1481 16, /* bitsize */
1482 FALSE, /* pc_relative */
1483 0, /* bitpos */
1484 complain_overflow_dont, /* complain_on_overflow */
1485 ppc_elf_unhandled_reloc, /* special_function */
1486 "R_PPC_VLE_HI16A", /* name */
1487 FALSE, /* partial_inplace */
1488 0, /* src_mask */
1489 0x1f07ff, /* dst_mask */
1490 FALSE), /* pcrel_offset */
1491
1492 /* Bits 16-31 split16d format. */
1493 HOWTO (R_PPC_VLE_HI16D, /* type */
1494 16, /* rightshift */
1495 2, /* size (0 = byte, 1 = short, 2 = long) */
1496 16, /* bitsize */
1497 FALSE, /* pc_relative */
1498 0, /* bitpos */
1499 complain_overflow_dont, /* complain_on_overflow */
1500 ppc_elf_unhandled_reloc, /* special_function */
1501 "R_PPC_VLE_HI16D", /* name */
1502 FALSE, /* partial_inplace */
1503 0, /* src_mask */
1504 0x3e007ff, /* dst_mask */
1505 FALSE), /* pcrel_offset */
1506
1507 /* Bits 16-31 (High Adjusted) in split16a format. */
1508 HOWTO (R_PPC_VLE_HA16A, /* type */
1509 16, /* rightshift */
1510 2, /* size (0 = byte, 1 = short, 2 = long) */
1511 16, /* bitsize */
1512 FALSE, /* pc_relative */
1513 0, /* bitpos */
1514 complain_overflow_dont, /* complain_on_overflow */
1515 ppc_elf_unhandled_reloc, /* special_function */
1516 "R_PPC_VLE_HA16A", /* name */
1517 FALSE, /* partial_inplace */
1518 0, /* src_mask */
1519 0x1f07ff, /* dst_mask */
1520 FALSE), /* pcrel_offset */
1521
1522 /* Bits 16-31 (High Adjusted) in split16d format. */
1523 HOWTO (R_PPC_VLE_HA16D, /* type */
1524 16, /* rightshift */
1525 2, /* size (0 = byte, 1 = short, 2 = long) */
1526 16, /* bitsize */
1527 FALSE, /* pc_relative */
1528 0, /* bitpos */
1529 complain_overflow_dont, /* complain_on_overflow */
1530 ppc_elf_unhandled_reloc, /* special_function */
1531 "R_PPC_VLE_HA16D", /* name */
1532 FALSE, /* partial_inplace */
1533 0, /* src_mask */
1534 0x3e007ff, /* dst_mask */
1535 FALSE), /* pcrel_offset */
1536
1537 /* This reloc is like R_PPC_EMB_SDA21 but only applies to e_add16i
1538 instructions. If the register base is 0 then the linker changes
1539 the e_add16i to an e_li instruction. */
1540 HOWTO (R_PPC_VLE_SDA21, /* type */
1541 0, /* rightshift */
1542 2, /* size (0 = byte, 1 = short, 2 = long) */
1543 16, /* bitsize */
1544 FALSE, /* pc_relative */
1545 0, /* bitpos */
1546 complain_overflow_signed, /* complain_on_overflow */
1547 ppc_elf_unhandled_reloc, /* special_function */
1548 "R_PPC_VLE_SDA21", /* name */
1549 FALSE, /* partial_inplace */
1550 0, /* src_mask */
1551 0xffff, /* dst_mask */
1552 FALSE), /* pcrel_offset */
1553
1554 /* Like R_PPC_VLE_SDA21 but ignore overflow. */
1555 HOWTO (R_PPC_VLE_SDA21_LO, /* type */
1556 0, /* rightshift */
1557 2, /* size (0 = byte, 1 = short, 2 = long) */
1558 16, /* bitsize */
1559 FALSE, /* pc_relative */
1560 0, /* bitpos */
1561 complain_overflow_dont, /* complain_on_overflow */
1562 ppc_elf_unhandled_reloc, /* special_function */
1563 "R_PPC_VLE_SDA21_LO", /* name */
1564 FALSE, /* partial_inplace */
1565 0, /* src_mask */
1566 0xffff, /* dst_mask */
1567 FALSE), /* pcrel_offset */
1568
1569 /* The 16 LSBS relative to _SDA_BASE_ in split16a format. */
1570 HOWTO (R_PPC_VLE_SDAREL_LO16A,/* type */
1571 0, /* rightshift */
1572 2, /* size (0 = byte, 1 = short, 2 = long) */
1573 16, /* bitsize */
1574 FALSE, /* pc_relative */
1575 0, /* bitpos */
1576 complain_overflow_dont, /* complain_on_overflow */
1577 ppc_elf_unhandled_reloc, /* special_function */
1578 "R_PPC_VLE_SDAREL_LO16A", /* name */
1579 FALSE, /* partial_inplace */
1580 0, /* src_mask */
1581 0x1f07ff, /* dst_mask */
1582 FALSE), /* pcrel_offset */
1583
1584 /* The 16 LSBS relative to _SDA_BASE_ in split16d format. */
1585 HOWTO (R_PPC_VLE_SDAREL_LO16D, /* type */
1586 0, /* rightshift */
1587 2, /* size (0 = byte, 1 = short, 2 = long) */
1588 16, /* bitsize */
1589 FALSE, /* pc_relative */
1590 0, /* bitpos */
1591 complain_overflow_dont, /* complain_on_overflow */
1592 ppc_elf_unhandled_reloc, /* special_function */
1593 "R_PPC_VLE_SDAREL_LO16D", /* name */
1594 FALSE, /* partial_inplace */
1595 0, /* src_mask */
1596 0x3e007ff, /* dst_mask */
1597 FALSE), /* pcrel_offset */
1598
1599 /* Bits 16-31 relative to _SDA_BASE_ in split16a format. */
1600 HOWTO (R_PPC_VLE_SDAREL_HI16A, /* type */
1601 16, /* rightshift */
1602 2, /* size (0 = byte, 1 = short, 2 = long) */
1603 16, /* bitsize */
1604 FALSE, /* pc_relative */
1605 0, /* bitpos */
1606 complain_overflow_dont, /* complain_on_overflow */
1607 ppc_elf_unhandled_reloc, /* special_function */
1608 "R_PPC_VLE_SDAREL_HI16A", /* name */
1609 FALSE, /* partial_inplace */
1610 0, /* src_mask */
1611 0x1f07ff, /* dst_mask */
1612 FALSE), /* pcrel_offset */
1613
1614 /* Bits 16-31 relative to _SDA_BASE_ in split16d format. */
1615 HOWTO (R_PPC_VLE_SDAREL_HI16D, /* type */
1616 16, /* rightshift */
1617 2, /* size (0 = byte, 1 = short, 2 = long) */
1618 16, /* bitsize */
1619 FALSE, /* pc_relative */
1620 0, /* bitpos */
1621 complain_overflow_dont, /* complain_on_overflow */
1622 ppc_elf_unhandled_reloc, /* special_function */
1623 "R_PPC_VLE_SDAREL_HI16D", /* name */
1624 FALSE, /* partial_inplace */
1625 0, /* src_mask */
1626 0x3e007ff, /* dst_mask */
1627 FALSE), /* pcrel_offset */
1628
1629 /* Bits 16-31 (HA) relative to _SDA_BASE split16a format. */
1630 HOWTO (R_PPC_VLE_SDAREL_HA16A, /* type */
1631 16, /* rightshift */
1632 2, /* size (0 = byte, 1 = short, 2 = long) */
1633 16, /* bitsize */
1634 FALSE, /* pc_relative */
1635 0, /* bitpos */
1636 complain_overflow_dont, /* complain_on_overflow */
1637 ppc_elf_unhandled_reloc, /* special_function */
1638 "R_PPC_VLE_SDAREL_HA16A", /* name */
1639 FALSE, /* partial_inplace */
1640 0, /* src_mask */
1641 0x1f07ff, /* dst_mask */
1642 FALSE), /* pcrel_offset */
1643
1644 /* Bits 16-31 (HA) relative to _SDA_BASE split16d format. */
1645 HOWTO (R_PPC_VLE_SDAREL_HA16D, /* type */
1646 16, /* rightshift */
1647 2, /* size (0 = byte, 1 = short, 2 = long) */
1648 16, /* bitsize */
1649 FALSE, /* pc_relative */
1650 0, /* bitpos */
1651 complain_overflow_dont, /* complain_on_overflow */
1652 ppc_elf_unhandled_reloc, /* special_function */
1653 "R_PPC_VLE_SDAREL_HA16D", /* name */
1654 FALSE, /* partial_inplace */
1655 0, /* src_mask */
1656 0x3e007ff, /* dst_mask */
1657 FALSE), /* pcrel_offset */
1658
1659 /* e_li split20 format. */
1660 HOWTO (R_PPC_VLE_ADDR20, /* type */
1661 16, /* rightshift */
1662 2, /* size (0 = byte, 1 = short, 2 = long) */
1663 20, /* bitsize */
1664 FALSE, /* pc_relative */
1665 0, /* bitpos */
1666 complain_overflow_dont, /* complain_on_overflow */
1667 bfd_elf_generic_reloc, /* special_function */
1668 "R_PPC_VLE_ADDR20", /* name */
1669 FALSE, /* partial_inplace */
1670 0, /* src_mask */
1671 0x1f07ff, /* dst_mask */
1672 FALSE), /* pcrel_offset */
1673
1674 HOWTO (R_PPC_IRELATIVE, /* type */
1675 0, /* rightshift */
1676 2, /* size (0 = byte, 1 = short, 2 = long) */
1677 32, /* bitsize */
1678 FALSE, /* pc_relative */
1679 0, /* bitpos */
1680 complain_overflow_dont, /* complain_on_overflow */
1681 ppc_elf_unhandled_reloc, /* special_function */
1682 "R_PPC_IRELATIVE", /* name */
1683 FALSE, /* partial_inplace */
1684 0, /* src_mask */
1685 0xffffffff, /* dst_mask */
1686 FALSE), /* pcrel_offset */
1687
1688 /* A 16 bit relative relocation. */
1689 HOWTO (R_PPC_REL16, /* type */
1690 0, /* rightshift */
1691 1, /* size (0 = byte, 1 = short, 2 = long) */
1692 16, /* bitsize */
1693 TRUE, /* pc_relative */
1694 0, /* bitpos */
1695 complain_overflow_signed, /* complain_on_overflow */
1696 bfd_elf_generic_reloc, /* special_function */
1697 "R_PPC_REL16", /* name */
1698 FALSE, /* partial_inplace */
1699 0, /* src_mask */
1700 0xffff, /* dst_mask */
1701 TRUE), /* pcrel_offset */
1702
1703 /* A 16 bit relative relocation without overflow. */
1704 HOWTO (R_PPC_REL16_LO, /* type */
1705 0, /* rightshift */
1706 1, /* size (0 = byte, 1 = short, 2 = long) */
1707 16, /* bitsize */
1708 TRUE, /* pc_relative */
1709 0, /* bitpos */
1710 complain_overflow_dont,/* complain_on_overflow */
1711 bfd_elf_generic_reloc, /* special_function */
1712 "R_PPC_REL16_LO", /* name */
1713 FALSE, /* partial_inplace */
1714 0, /* src_mask */
1715 0xffff, /* dst_mask */
1716 TRUE), /* pcrel_offset */
1717
1718 /* The high order 16 bits of a relative address. */
1719 HOWTO (R_PPC_REL16_HI, /* type */
1720 16, /* rightshift */
1721 1, /* size (0 = byte, 1 = short, 2 = long) */
1722 16, /* bitsize */
1723 TRUE, /* pc_relative */
1724 0, /* bitpos */
1725 complain_overflow_dont, /* complain_on_overflow */
1726 bfd_elf_generic_reloc, /* special_function */
1727 "R_PPC_REL16_HI", /* name */
1728 FALSE, /* partial_inplace */
1729 0, /* src_mask */
1730 0xffff, /* dst_mask */
1731 TRUE), /* pcrel_offset */
1732
1733 /* The high order 16 bits of a relative address, plus 1 if the contents of
1734 the low 16 bits, treated as a signed number, is negative. */
1735 HOWTO (R_PPC_REL16_HA, /* type */
1736 16, /* rightshift */
1737 1, /* size (0 = byte, 1 = short, 2 = long) */
1738 16, /* bitsize */
1739 TRUE, /* pc_relative */
1740 0, /* bitpos */
1741 complain_overflow_dont, /* complain_on_overflow */
1742 ppc_elf_addr16_ha_reloc, /* special_function */
1743 "R_PPC_REL16_HA", /* name */
1744 FALSE, /* partial_inplace */
1745 0, /* src_mask */
1746 0xffff, /* dst_mask */
1747 TRUE), /* pcrel_offset */
1748
1749 /* Like R_PPC_REL16_HA but for split field in addpcis. */
1750 HOWTO (R_PPC_REL16DX_HA, /* type */
1751 16, /* rightshift */
1752 2, /* size (0 = byte, 1 = short, 2 = long) */
1753 16, /* bitsize */
1754 TRUE, /* pc_relative */
1755 0, /* bitpos */
1756 complain_overflow_signed, /* complain_on_overflow */
1757 ppc_elf_addr16_ha_reloc, /* special_function */
1758 "R_PPC_REL16DX_HA", /* name */
1759 FALSE, /* partial_inplace */
1760 0, /* src_mask */
1761 0x1fffc1, /* dst_mask */
1762 TRUE), /* pcrel_offset */
1763
1764 /* A split-field reloc for addpcis, non-relative (gas internal use only). */
1765 HOWTO (R_PPC_16DX_HA, /* type */
1766 16, /* rightshift */
1767 2, /* size (0 = byte, 1 = short, 2 = long) */
1768 16, /* bitsize */
1769 FALSE, /* pc_relative */
1770 0, /* bitpos */
1771 complain_overflow_signed, /* complain_on_overflow */
1772 ppc_elf_addr16_ha_reloc, /* special_function */
1773 "R_PPC_16DX_HA", /* name */
1774 FALSE, /* partial_inplace */
1775 0, /* src_mask */
1776 0x1fffc1, /* dst_mask */
1777 FALSE), /* pcrel_offset */
1778
1779 /* GNU extension to record C++ vtable hierarchy. */
1780 HOWTO (R_PPC_GNU_VTINHERIT, /* type */
1781 0, /* rightshift */
1782 0, /* size (0 = byte, 1 = short, 2 = long) */
1783 0, /* bitsize */
1784 FALSE, /* pc_relative */
1785 0, /* bitpos */
1786 complain_overflow_dont, /* complain_on_overflow */
1787 NULL, /* special_function */
1788 "R_PPC_GNU_VTINHERIT", /* name */
1789 FALSE, /* partial_inplace */
1790 0, /* src_mask */
1791 0, /* dst_mask */
1792 FALSE), /* pcrel_offset */
1793
1794 /* GNU extension to record C++ vtable member usage. */
1795 HOWTO (R_PPC_GNU_VTENTRY, /* type */
1796 0, /* rightshift */
1797 0, /* size (0 = byte, 1 = short, 2 = long) */
1798 0, /* bitsize */
1799 FALSE, /* pc_relative */
1800 0, /* bitpos */
1801 complain_overflow_dont, /* complain_on_overflow */
1802 NULL, /* special_function */
1803 "R_PPC_GNU_VTENTRY", /* name */
1804 FALSE, /* partial_inplace */
1805 0, /* src_mask */
1806 0, /* dst_mask */
1807 FALSE), /* pcrel_offset */
1808
1809 /* Phony reloc to handle AIX style TOC entries. */
1810 HOWTO (R_PPC_TOC16, /* type */
1811 0, /* rightshift */
1812 1, /* size (0 = byte, 1 = short, 2 = long) */
1813 16, /* bitsize */
1814 FALSE, /* pc_relative */
1815 0, /* bitpos */
1816 complain_overflow_signed, /* complain_on_overflow */
1817 ppc_elf_unhandled_reloc, /* special_function */
1818 "R_PPC_TOC16", /* name */
1819 FALSE, /* partial_inplace */
1820 0, /* src_mask */
1821 0xffff, /* dst_mask */
1822 FALSE), /* pcrel_offset */
1823 };
1824 \f
1825 /* Initialize the ppc_elf_howto_table, so that linear accesses can be done. */
1826
1827 static void
1828 ppc_elf_howto_init (void)
1829 {
1830 unsigned int i, type;
1831
1832 for (i = 0;
1833 i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]);
1834 i++)
1835 {
1836 type = ppc_elf_howto_raw[i].type;
1837 if (type >= (sizeof (ppc_elf_howto_table)
1838 / sizeof (ppc_elf_howto_table[0])))
1839 abort ();
1840 ppc_elf_howto_table[type] = &ppc_elf_howto_raw[i];
1841 }
1842 }
1843
1844 static reloc_howto_type *
1845 ppc_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1846 bfd_reloc_code_real_type code)
1847 {
1848 enum elf_ppc_reloc_type r;
1849
1850 /* Initialize howto table if not already done. */
1851 if (!ppc_elf_howto_table[R_PPC_ADDR32])
1852 ppc_elf_howto_init ();
1853
1854 switch (code)
1855 {
1856 default:
1857 return NULL;
1858
1859 case BFD_RELOC_NONE: r = R_PPC_NONE; break;
1860 case BFD_RELOC_32: r = R_PPC_ADDR32; break;
1861 case BFD_RELOC_PPC_BA26: r = R_PPC_ADDR24; break;
1862 case BFD_RELOC_PPC64_ADDR16_DS:
1863 case BFD_RELOC_16: r = R_PPC_ADDR16; break;
1864 case BFD_RELOC_PPC64_ADDR16_LO_DS:
1865 case BFD_RELOC_LO16: r = R_PPC_ADDR16_LO; break;
1866 case BFD_RELOC_HI16: r = R_PPC_ADDR16_HI; break;
1867 case BFD_RELOC_HI16_S: r = R_PPC_ADDR16_HA; break;
1868 case BFD_RELOC_PPC_BA16: r = R_PPC_ADDR14; break;
1869 case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC_ADDR14_BRTAKEN; break;
1870 case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC_ADDR14_BRNTAKEN; break;
1871 case BFD_RELOC_PPC_B26: r = R_PPC_REL24; break;
1872 case BFD_RELOC_PPC_B16: r = R_PPC_REL14; break;
1873 case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC_REL14_BRTAKEN; break;
1874 case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC_REL14_BRNTAKEN; break;
1875 case BFD_RELOC_PPC64_GOT16_DS:
1876 case BFD_RELOC_16_GOTOFF: r = R_PPC_GOT16; break;
1877 case BFD_RELOC_PPC64_GOT16_LO_DS:
1878 case BFD_RELOC_LO16_GOTOFF: r = R_PPC_GOT16_LO; break;
1879 case BFD_RELOC_HI16_GOTOFF: r = R_PPC_GOT16_HI; break;
1880 case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC_GOT16_HA; break;
1881 case BFD_RELOC_24_PLT_PCREL: r = R_PPC_PLTREL24; break;
1882 case BFD_RELOC_PPC_COPY: r = R_PPC_COPY; break;
1883 case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC_GLOB_DAT; break;
1884 case BFD_RELOC_PPC_LOCAL24PC: r = R_PPC_LOCAL24PC; break;
1885 case BFD_RELOC_32_PCREL: r = R_PPC_REL32; break;
1886 case BFD_RELOC_32_PLTOFF: r = R_PPC_PLT32; break;
1887 case BFD_RELOC_32_PLT_PCREL: r = R_PPC_PLTREL32; break;
1888 case BFD_RELOC_PPC64_PLT16_LO_DS:
1889 case BFD_RELOC_LO16_PLTOFF: r = R_PPC_PLT16_LO; break;
1890 case BFD_RELOC_HI16_PLTOFF: r = R_PPC_PLT16_HI; break;
1891 case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC_PLT16_HA; break;
1892 case BFD_RELOC_GPREL16: r = R_PPC_SDAREL16; break;
1893 case BFD_RELOC_PPC64_SECTOFF_DS:
1894 case BFD_RELOC_16_BASEREL: r = R_PPC_SECTOFF; break;
1895 case BFD_RELOC_PPC64_SECTOFF_LO_DS:
1896 case BFD_RELOC_LO16_BASEREL: r = R_PPC_SECTOFF_LO; break;
1897 case BFD_RELOC_HI16_BASEREL: r = R_PPC_SECTOFF_HI; break;
1898 case BFD_RELOC_HI16_S_BASEREL: r = R_PPC_SECTOFF_HA; break;
1899 case BFD_RELOC_CTOR: r = R_PPC_ADDR32; break;
1900 case BFD_RELOC_PPC64_TOC16_DS:
1901 case BFD_RELOC_PPC_TOC16: r = R_PPC_TOC16; break;
1902 case BFD_RELOC_PPC_TLS: r = R_PPC_TLS; break;
1903 case BFD_RELOC_PPC_TLSGD: r = R_PPC_TLSGD; break;
1904 case BFD_RELOC_PPC_TLSLD: r = R_PPC_TLSLD; break;
1905 case BFD_RELOC_PPC_DTPMOD: r = R_PPC_DTPMOD32; break;
1906 case BFD_RELOC_PPC64_TPREL16_DS:
1907 case BFD_RELOC_PPC_TPREL16: r = R_PPC_TPREL16; break;
1908 case BFD_RELOC_PPC64_TPREL16_LO_DS:
1909 case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC_TPREL16_LO; break;
1910 case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC_TPREL16_HI; break;
1911 case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC_TPREL16_HA; break;
1912 case BFD_RELOC_PPC_TPREL: r = R_PPC_TPREL32; break;
1913 case BFD_RELOC_PPC64_DTPREL16_DS:
1914 case BFD_RELOC_PPC_DTPREL16: r = R_PPC_DTPREL16; break;
1915 case BFD_RELOC_PPC64_DTPREL16_LO_DS:
1916 case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC_DTPREL16_LO; break;
1917 case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC_DTPREL16_HI; break;
1918 case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC_DTPREL16_HA; break;
1919 case BFD_RELOC_PPC_DTPREL: r = R_PPC_DTPREL32; break;
1920 case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC_GOT_TLSGD16; break;
1921 case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC_GOT_TLSGD16_LO; break;
1922 case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC_GOT_TLSGD16_HI; break;
1923 case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC_GOT_TLSGD16_HA; break;
1924 case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC_GOT_TLSLD16; break;
1925 case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC_GOT_TLSLD16_LO; break;
1926 case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC_GOT_TLSLD16_HI; break;
1927 case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC_GOT_TLSLD16_HA; break;
1928 case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC_GOT_TPREL16; break;
1929 case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC_GOT_TPREL16_LO; break;
1930 case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC_GOT_TPREL16_HI; break;
1931 case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC_GOT_TPREL16_HA; break;
1932 case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC_GOT_DTPREL16; break;
1933 case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC_GOT_DTPREL16_LO; break;
1934 case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC_GOT_DTPREL16_HI; break;
1935 case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC_GOT_DTPREL16_HA; break;
1936 case BFD_RELOC_PPC_EMB_NADDR32: r = R_PPC_EMB_NADDR32; break;
1937 case BFD_RELOC_PPC_EMB_NADDR16: r = R_PPC_EMB_NADDR16; break;
1938 case BFD_RELOC_PPC_EMB_NADDR16_LO: r = R_PPC_EMB_NADDR16_LO; break;
1939 case BFD_RELOC_PPC_EMB_NADDR16_HI: r = R_PPC_EMB_NADDR16_HI; break;
1940 case BFD_RELOC_PPC_EMB_NADDR16_HA: r = R_PPC_EMB_NADDR16_HA; break;
1941 case BFD_RELOC_PPC_EMB_SDAI16: r = R_PPC_EMB_SDAI16; break;
1942 case BFD_RELOC_PPC_EMB_SDA2I16: r = R_PPC_EMB_SDA2I16; break;
1943 case BFD_RELOC_PPC_EMB_SDA2REL: r = R_PPC_EMB_SDA2REL; break;
1944 case BFD_RELOC_PPC_EMB_SDA21: r = R_PPC_EMB_SDA21; break;
1945 case BFD_RELOC_PPC_EMB_MRKREF: r = R_PPC_EMB_MRKREF; break;
1946 case BFD_RELOC_PPC_EMB_RELSEC16: r = R_PPC_EMB_RELSEC16; break;
1947 case BFD_RELOC_PPC_EMB_RELST_LO: r = R_PPC_EMB_RELST_LO; break;
1948 case BFD_RELOC_PPC_EMB_RELST_HI: r = R_PPC_EMB_RELST_HI; break;
1949 case BFD_RELOC_PPC_EMB_RELST_HA: r = R_PPC_EMB_RELST_HA; break;
1950 case BFD_RELOC_PPC_EMB_BIT_FLD: r = R_PPC_EMB_BIT_FLD; break;
1951 case BFD_RELOC_PPC_EMB_RELSDA: r = R_PPC_EMB_RELSDA; break;
1952 case BFD_RELOC_PPC_VLE_REL8: r = R_PPC_VLE_REL8; break;
1953 case BFD_RELOC_PPC_VLE_REL15: r = R_PPC_VLE_REL15; break;
1954 case BFD_RELOC_PPC_VLE_REL24: r = R_PPC_VLE_REL24; break;
1955 case BFD_RELOC_PPC_VLE_LO16A: r = R_PPC_VLE_LO16A; break;
1956 case BFD_RELOC_PPC_VLE_LO16D: r = R_PPC_VLE_LO16D; break;
1957 case BFD_RELOC_PPC_VLE_HI16A: r = R_PPC_VLE_HI16A; break;
1958 case BFD_RELOC_PPC_VLE_HI16D: r = R_PPC_VLE_HI16D; break;
1959 case BFD_RELOC_PPC_VLE_HA16A: r = R_PPC_VLE_HA16A; break;
1960 case BFD_RELOC_PPC_VLE_HA16D: r = R_PPC_VLE_HA16D; break;
1961 case BFD_RELOC_PPC_VLE_SDA21: r = R_PPC_VLE_SDA21; break;
1962 case BFD_RELOC_PPC_VLE_SDA21_LO: r = R_PPC_VLE_SDA21_LO; break;
1963 case BFD_RELOC_PPC_VLE_SDAREL_LO16A:
1964 r = R_PPC_VLE_SDAREL_LO16A;
1965 break;
1966 case BFD_RELOC_PPC_VLE_SDAREL_LO16D:
1967 r = R_PPC_VLE_SDAREL_LO16D;
1968 break;
1969 case BFD_RELOC_PPC_VLE_SDAREL_HI16A:
1970 r = R_PPC_VLE_SDAREL_HI16A;
1971 break;
1972 case BFD_RELOC_PPC_VLE_SDAREL_HI16D:
1973 r = R_PPC_VLE_SDAREL_HI16D;
1974 break;
1975 case BFD_RELOC_PPC_VLE_SDAREL_HA16A:
1976 r = R_PPC_VLE_SDAREL_HA16A;
1977 break;
1978 case BFD_RELOC_PPC_VLE_SDAREL_HA16D:
1979 r = R_PPC_VLE_SDAREL_HA16D;
1980 break;
1981 case BFD_RELOC_16_PCREL: r = R_PPC_REL16; break;
1982 case BFD_RELOC_LO16_PCREL: r = R_PPC_REL16_LO; break;
1983 case BFD_RELOC_HI16_PCREL: r = R_PPC_REL16_HI; break;
1984 case BFD_RELOC_HI16_S_PCREL: r = R_PPC_REL16_HA; break;
1985 case BFD_RELOC_PPC_16DX_HA: r = R_PPC_16DX_HA; break;
1986 case BFD_RELOC_PPC_REL16DX_HA: r = R_PPC_REL16DX_HA; break;
1987 case BFD_RELOC_VTABLE_INHERIT: r = R_PPC_GNU_VTINHERIT; break;
1988 case BFD_RELOC_VTABLE_ENTRY: r = R_PPC_GNU_VTENTRY; break;
1989 }
1990
1991 return ppc_elf_howto_table[r];
1992 };
1993
1994 static reloc_howto_type *
1995 ppc_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1996 const char *r_name)
1997 {
1998 unsigned int i;
1999
2000 for (i = 0;
2001 i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]);
2002 i++)
2003 if (ppc_elf_howto_raw[i].name != NULL
2004 && strcasecmp (ppc_elf_howto_raw[i].name, r_name) == 0)
2005 return &ppc_elf_howto_raw[i];
2006
2007 return NULL;
2008 }
2009
2010 /* Set the howto pointer for a PowerPC ELF reloc. */
2011
2012 static void
2013 ppc_elf_info_to_howto (bfd *abfd,
2014 arelent *cache_ptr,
2015 Elf_Internal_Rela *dst)
2016 {
2017 unsigned int r_type;
2018
2019 /* Initialize howto table if not already done. */
2020 if (!ppc_elf_howto_table[R_PPC_ADDR32])
2021 ppc_elf_howto_init ();
2022
2023 r_type = ELF32_R_TYPE (dst->r_info);
2024 if (r_type >= R_PPC_max)
2025 {
2026 /* xgettext:c-format */
2027 _bfd_error_handler (_("%B: unrecognised PPC reloc number: %d"),
2028 abfd, r_type);
2029 bfd_set_error (bfd_error_bad_value);
2030 r_type = R_PPC_NONE;
2031 }
2032 cache_ptr->howto = ppc_elf_howto_table[r_type];
2033
2034 /* Just because the above assert didn't trigger doesn't mean that
2035 ELF32_R_TYPE (dst->r_info) is necessarily a valid relocation. */
2036 if (!cache_ptr->howto)
2037 {
2038 /* xgettext:c-format */
2039 _bfd_error_handler (_("%B: invalid relocation type %d"),
2040 abfd, r_type);
2041 bfd_set_error (bfd_error_bad_value);
2042
2043 cache_ptr->howto = ppc_elf_howto_table[R_PPC_NONE];
2044 }
2045 }
2046
2047 /* Handle the R_PPC_ADDR16_HA and R_PPC_REL16_HA relocs. */
2048
2049 static bfd_reloc_status_type
2050 ppc_elf_addr16_ha_reloc (bfd *abfd,
2051 arelent *reloc_entry,
2052 asymbol *symbol,
2053 void *data,
2054 asection *input_section,
2055 bfd *output_bfd,
2056 char **error_message ATTRIBUTE_UNUSED)
2057 {
2058 enum elf_ppc_reloc_type r_type;
2059 long insn;
2060 bfd_size_type octets;
2061 bfd_vma value;
2062
2063 if (output_bfd != NULL)
2064 {
2065 reloc_entry->address += input_section->output_offset;
2066 return bfd_reloc_ok;
2067 }
2068
2069 reloc_entry->addend += 0x8000;
2070 r_type = reloc_entry->howto->type;
2071 if (r_type != R_PPC_REL16DX_HA)
2072 return bfd_reloc_continue;
2073
2074 value = 0;
2075 if (!bfd_is_com_section (symbol->section))
2076 value = symbol->value;
2077 value += (reloc_entry->addend
2078 + symbol->section->output_offset
2079 + symbol->section->output_section->vma);
2080 value -= (reloc_entry->address
2081 + input_section->output_offset
2082 + input_section->output_section->vma);
2083 value >>= 16;
2084
2085 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
2086 insn = bfd_get_32 (abfd, (bfd_byte *) data + octets);
2087 insn &= ~0x1fffc1;
2088 insn |= (value & 0xffc1) | ((value & 0x3e) << 15);
2089 bfd_put_32 (abfd, insn, (bfd_byte *) data + octets);
2090 return bfd_reloc_ok;
2091 }
2092
2093 static bfd_reloc_status_type
2094 ppc_elf_unhandled_reloc (bfd *abfd,
2095 arelent *reloc_entry,
2096 asymbol *symbol,
2097 void *data,
2098 asection *input_section,
2099 bfd *output_bfd,
2100 char **error_message)
2101 {
2102 /* If this is a relocatable link (output_bfd test tells us), just
2103 call the generic function. Any adjustment will be done at final
2104 link time. */
2105 if (output_bfd != NULL)
2106 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2107 input_section, output_bfd, error_message);
2108
2109 if (error_message != NULL)
2110 {
2111 static char buf[60];
2112 sprintf (buf, _("generic linker can't handle %s"),
2113 reloc_entry->howto->name);
2114 *error_message = buf;
2115 }
2116 return bfd_reloc_dangerous;
2117 }
2118 \f
2119 /* Sections created by the linker. */
2120
2121 typedef struct elf_linker_section
2122 {
2123 /* Pointer to the bfd section. */
2124 asection *section;
2125 /* Section name. */
2126 const char *name;
2127 /* Associated bss section name. */
2128 const char *bss_name;
2129 /* Associated symbol name. */
2130 const char *sym_name;
2131 /* Associated symbol. */
2132 struct elf_link_hash_entry *sym;
2133 } elf_linker_section_t;
2134
2135 /* Linked list of allocated pointer entries. This hangs off of the
2136 symbol lists, and provides allows us to return different pointers,
2137 based on different addend's. */
2138
2139 typedef struct elf_linker_section_pointers
2140 {
2141 /* next allocated pointer for this symbol */
2142 struct elf_linker_section_pointers *next;
2143 /* offset of pointer from beginning of section */
2144 bfd_vma offset;
2145 /* addend used */
2146 bfd_vma addend;
2147 /* which linker section this is */
2148 elf_linker_section_t *lsect;
2149 } elf_linker_section_pointers_t;
2150
2151 struct ppc_elf_obj_tdata
2152 {
2153 struct elf_obj_tdata elf;
2154
2155 /* A mapping from local symbols to offsets into the various linker
2156 sections added. This is index by the symbol index. */
2157 elf_linker_section_pointers_t **linker_section_pointers;
2158
2159 /* Flags used to auto-detect plt type. */
2160 unsigned int makes_plt_call : 1;
2161 unsigned int has_rel16 : 1;
2162 };
2163
2164 #define ppc_elf_tdata(bfd) \
2165 ((struct ppc_elf_obj_tdata *) (bfd)->tdata.any)
2166
2167 #define elf_local_ptr_offsets(bfd) \
2168 (ppc_elf_tdata (bfd)->linker_section_pointers)
2169
2170 #define is_ppc_elf(bfd) \
2171 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
2172 && elf_object_id (bfd) == PPC32_ELF_DATA)
2173
2174 /* Override the generic function because we store some extras. */
2175
2176 static bfd_boolean
2177 ppc_elf_mkobject (bfd *abfd)
2178 {
2179 return bfd_elf_allocate_object (abfd, sizeof (struct ppc_elf_obj_tdata),
2180 PPC32_ELF_DATA);
2181 }
2182
2183 /* When defaulting arch/mach, decode apuinfo to find a better match. */
2184
2185 bfd_boolean
2186 _bfd_elf_ppc_set_arch (bfd *abfd)
2187 {
2188 unsigned long mach = 0;
2189 asection *s;
2190 unsigned char *contents;
2191
2192 if (abfd->arch_info->bits_per_word == 32
2193 && bfd_big_endian (abfd))
2194 {
2195
2196 for (s = abfd->sections; s != NULL; s = s->next)
2197 if ((elf_section_data (s)->this_hdr.sh_flags & SHF_PPC_VLE) != 0)
2198 break;
2199 if (s != NULL)
2200 mach = bfd_mach_ppc_vle;
2201 }
2202
2203 if (mach == 0)
2204 {
2205 s = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2206 if (s != NULL && bfd_malloc_and_get_section (abfd, s, &contents))
2207 {
2208 unsigned int apuinfo_size = bfd_get_32 (abfd, contents + 4);
2209 unsigned int i;
2210
2211 for (i = 20; i < apuinfo_size + 20 && i + 4 <= s->size; i += 4)
2212 {
2213 unsigned int val = bfd_get_32 (abfd, contents + i);
2214 switch (val >> 16)
2215 {
2216 case PPC_APUINFO_PMR:
2217 case PPC_APUINFO_RFMCI:
2218 if (mach == 0)
2219 mach = bfd_mach_ppc_titan;
2220 break;
2221
2222 case PPC_APUINFO_ISEL:
2223 case PPC_APUINFO_CACHELCK:
2224 if (mach == bfd_mach_ppc_titan)
2225 mach = bfd_mach_ppc_e500mc;
2226 break;
2227
2228 case PPC_APUINFO_SPE:
2229 case PPC_APUINFO_EFS:
2230 case PPC_APUINFO_BRLOCK:
2231 if (mach != bfd_mach_ppc_vle)
2232 mach = bfd_mach_ppc_e500;
2233 break;
2234
2235 case PPC_APUINFO_VLE:
2236 mach = bfd_mach_ppc_vle;
2237 break;
2238
2239 default:
2240 mach = -1ul;
2241 }
2242 }
2243 free (contents);
2244 }
2245 }
2246
2247 if (mach != 0 && mach != -1ul)
2248 {
2249 const bfd_arch_info_type *arch;
2250
2251 for (arch = abfd->arch_info->next; arch; arch = arch->next)
2252 if (arch->mach == mach)
2253 {
2254 abfd->arch_info = arch;
2255 break;
2256 }
2257 }
2258 return TRUE;
2259 }
2260
2261 /* Fix bad default arch selected for a 32 bit input bfd when the
2262 default is 64 bit. Also select arch based on apuinfo. */
2263
2264 static bfd_boolean
2265 ppc_elf_object_p (bfd *abfd)
2266 {
2267 if (!abfd->arch_info->the_default)
2268 return TRUE;
2269
2270 if (abfd->arch_info->bits_per_word == 64)
2271 {
2272 Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd);
2273
2274 if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS32)
2275 {
2276 /* Relies on arch after 64 bit default being 32 bit default. */
2277 abfd->arch_info = abfd->arch_info->next;
2278 BFD_ASSERT (abfd->arch_info->bits_per_word == 32);
2279 }
2280 }
2281 return _bfd_elf_ppc_set_arch (abfd);
2282 }
2283
2284 /* Function to set whether a module needs the -mrelocatable bit set. */
2285
2286 static bfd_boolean
2287 ppc_elf_set_private_flags (bfd *abfd, flagword flags)
2288 {
2289 BFD_ASSERT (!elf_flags_init (abfd)
2290 || elf_elfheader (abfd)->e_flags == flags);
2291
2292 elf_elfheader (abfd)->e_flags = flags;
2293 elf_flags_init (abfd) = TRUE;
2294 return TRUE;
2295 }
2296
2297 /* Support for core dump NOTE sections. */
2298
2299 static bfd_boolean
2300 ppc_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
2301 {
2302 int offset;
2303 unsigned int size;
2304
2305 switch (note->descsz)
2306 {
2307 default:
2308 return FALSE;
2309
2310 case 268: /* Linux/PPC. */
2311 /* pr_cursig */
2312 elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12);
2313
2314 /* pr_pid */
2315 elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 24);
2316
2317 /* pr_reg */
2318 offset = 72;
2319 size = 192;
2320
2321 break;
2322 }
2323
2324 /* Make a ".reg/999" section. */
2325 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
2326 size, note->descpos + offset);
2327 }
2328
2329 static bfd_boolean
2330 ppc_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
2331 {
2332 switch (note->descsz)
2333 {
2334 default:
2335 return FALSE;
2336
2337 case 128: /* Linux/PPC elf_prpsinfo. */
2338 elf_tdata (abfd)->core->pid
2339 = bfd_get_32 (abfd, note->descdata + 16);
2340 elf_tdata (abfd)->core->program
2341 = _bfd_elfcore_strndup (abfd, note->descdata + 32, 16);
2342 elf_tdata (abfd)->core->command
2343 = _bfd_elfcore_strndup (abfd, note->descdata + 48, 80);
2344 }
2345
2346 /* Note that for some reason, a spurious space is tacked
2347 onto the end of the args in some (at least one anyway)
2348 implementations, so strip it off if it exists. */
2349
2350 {
2351 char *command = elf_tdata (abfd)->core->command;
2352 int n = strlen (command);
2353
2354 if (0 < n && command[n - 1] == ' ')
2355 command[n - 1] = '\0';
2356 }
2357
2358 return TRUE;
2359 }
2360
2361 static char *
2362 ppc_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type, ...)
2363 {
2364 switch (note_type)
2365 {
2366 default:
2367 return NULL;
2368
2369 case NT_PRPSINFO:
2370 {
2371 char data[128];
2372 va_list ap;
2373
2374 va_start (ap, note_type);
2375 memset (data, 0, sizeof (data));
2376 strncpy (data + 32, va_arg (ap, const char *), 16);
2377 strncpy (data + 48, va_arg (ap, const char *), 80);
2378 va_end (ap);
2379 return elfcore_write_note (abfd, buf, bufsiz,
2380 "CORE", note_type, data, sizeof (data));
2381 }
2382
2383 case NT_PRSTATUS:
2384 {
2385 char data[268];
2386 va_list ap;
2387 long pid;
2388 int cursig;
2389 const void *greg;
2390
2391 va_start (ap, note_type);
2392 memset (data, 0, 72);
2393 pid = va_arg (ap, long);
2394 bfd_put_32 (abfd, pid, data + 24);
2395 cursig = va_arg (ap, int);
2396 bfd_put_16 (abfd, cursig, data + 12);
2397 greg = va_arg (ap, const void *);
2398 memcpy (data + 72, greg, 192);
2399 memset (data + 264, 0, 4);
2400 va_end (ap);
2401 return elfcore_write_note (abfd, buf, bufsiz,
2402 "CORE", note_type, data, sizeof (data));
2403 }
2404 }
2405 }
2406
2407 static flagword
2408 ppc_elf_lookup_section_flags (char *flag_name)
2409 {
2410
2411 if (!strcmp (flag_name, "SHF_PPC_VLE"))
2412 return SHF_PPC_VLE;
2413
2414 return 0;
2415 }
2416
2417 /* Return address for Ith PLT stub in section PLT, for relocation REL
2418 or (bfd_vma) -1 if it should not be included. */
2419
2420 static bfd_vma
2421 ppc_elf_plt_sym_val (bfd_vma i ATTRIBUTE_UNUSED,
2422 const asection *plt ATTRIBUTE_UNUSED,
2423 const arelent *rel)
2424 {
2425 return rel->address;
2426 }
2427
2428 /* Handle a PowerPC specific section when reading an object file. This
2429 is called when bfd_section_from_shdr finds a section with an unknown
2430 type. */
2431
2432 static bfd_boolean
2433 ppc_elf_section_from_shdr (bfd *abfd,
2434 Elf_Internal_Shdr *hdr,
2435 const char *name,
2436 int shindex)
2437 {
2438 asection *newsect;
2439 flagword flags;
2440
2441 if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
2442 return FALSE;
2443
2444 newsect = hdr->bfd_section;
2445 flags = bfd_get_section_flags (abfd, newsect);
2446 if (hdr->sh_flags & SHF_EXCLUDE)
2447 flags |= SEC_EXCLUDE;
2448
2449 if (hdr->sh_type == SHT_ORDERED)
2450 flags |= SEC_SORT_ENTRIES;
2451
2452 bfd_set_section_flags (abfd, newsect, flags);
2453 return TRUE;
2454 }
2455
2456 /* Set up any other section flags and such that may be necessary. */
2457
2458 static bfd_boolean
2459 ppc_elf_fake_sections (bfd *abfd ATTRIBUTE_UNUSED,
2460 Elf_Internal_Shdr *shdr,
2461 asection *asect)
2462 {
2463 if ((asect->flags & SEC_SORT_ENTRIES) != 0)
2464 shdr->sh_type = SHT_ORDERED;
2465
2466 return TRUE;
2467 }
2468
2469 /* If we have .sbss2 or .PPC.EMB.sbss0 output sections, we
2470 need to bump up the number of section headers. */
2471
2472 static int
2473 ppc_elf_additional_program_headers (bfd *abfd,
2474 struct bfd_link_info *info ATTRIBUTE_UNUSED)
2475 {
2476 asection *s;
2477 int ret = 0;
2478
2479 s = bfd_get_section_by_name (abfd, ".sbss2");
2480 if (s != NULL && (s->flags & SEC_ALLOC) != 0)
2481 ++ret;
2482
2483 s = bfd_get_section_by_name (abfd, ".PPC.EMB.sbss0");
2484 if (s != NULL && (s->flags & SEC_ALLOC) != 0)
2485 ++ret;
2486
2487 return ret;
2488 }
2489
2490 /* Modify the segment map for VLE executables. */
2491
2492 bfd_boolean
2493 ppc_elf_modify_segment_map (bfd *abfd,
2494 struct bfd_link_info *info ATTRIBUTE_UNUSED)
2495 {
2496 struct elf_segment_map *m;
2497
2498 /* At this point in the link, output sections have already been sorted by
2499 LMA and assigned to segments. All that is left to do is to ensure
2500 there is no mixing of VLE & non-VLE sections in a text segment.
2501 If we find that case, we split the segment.
2502 We maintain the original output section order. */
2503
2504 for (m = elf_seg_map (abfd); m != NULL; m = m->next)
2505 {
2506 struct elf_segment_map *n;
2507 bfd_size_type amt;
2508 unsigned int j, k;
2509 unsigned int p_flags;
2510
2511 if (m->p_type != PT_LOAD || m->count == 0)
2512 continue;
2513
2514 for (p_flags = PF_R, j = 0; j != m->count; ++j)
2515 {
2516 if ((m->sections[j]->flags & SEC_READONLY) == 0)
2517 p_flags |= PF_W;
2518 if ((m->sections[j]->flags & SEC_CODE) != 0)
2519 {
2520 p_flags |= PF_X;
2521 if ((elf_section_flags (m->sections[j]) & SHF_PPC_VLE) != 0)
2522 p_flags |= PF_PPC_VLE;
2523 break;
2524 }
2525 }
2526 if (j != m->count)
2527 while (++j != m->count)
2528 {
2529 unsigned int p_flags1 = PF_R;
2530
2531 if ((m->sections[j]->flags & SEC_READONLY) == 0)
2532 p_flags1 |= PF_W;
2533 if ((m->sections[j]->flags & SEC_CODE) != 0)
2534 {
2535 p_flags1 |= PF_X;
2536 if ((elf_section_flags (m->sections[j]) & SHF_PPC_VLE) != 0)
2537 p_flags1 |= PF_PPC_VLE;
2538 if (((p_flags1 ^ p_flags) & PF_PPC_VLE) != 0)
2539 break;
2540 }
2541 p_flags |= p_flags1;
2542 }
2543 /* If we're splitting a segment which originally contained rw
2544 sections then those sections might now only be in one of the
2545 two parts. So always set p_flags if splitting, even if we
2546 are being called for objcopy with p_flags_valid set. */
2547 if (j != m->count || !m->p_flags_valid)
2548 {
2549 m->p_flags_valid = 1;
2550 m->p_flags = p_flags;
2551 }
2552 if (j == m->count)
2553 continue;
2554
2555 /* Sections 0..j-1 stay in this (current) segment,
2556 the remainder are put in a new segment.
2557 The scan resumes with the new segment. */
2558
2559 amt = sizeof (struct elf_segment_map);
2560 amt += (m->count - j - 1) * sizeof (asection *);
2561 n = (struct elf_segment_map *) bfd_zalloc (abfd, amt);
2562 if (n == NULL)
2563 return FALSE;
2564
2565 n->p_type = PT_LOAD;
2566 n->count = m->count - j;
2567 for (k = 0; k < n->count; ++k)
2568 n->sections[k] = m->sections[j + k];
2569 m->count = j;
2570 m->p_size_valid = 0;
2571 n->next = m->next;
2572 m->next = n;
2573 }
2574
2575 return TRUE;
2576 }
2577
2578 /* Add extra PPC sections -- Note, for now, make .sbss2 and
2579 .PPC.EMB.sbss0 a normal section, and not a bss section so
2580 that the linker doesn't crater when trying to make more than
2581 2 sections. */
2582
2583 static const struct bfd_elf_special_section ppc_elf_special_sections[] =
2584 {
2585 { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, SHF_ALLOC + SHF_EXECINSTR },
2586 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2587 { STRING_COMMA_LEN (".sbss2"), -2, SHT_PROGBITS, SHF_ALLOC },
2588 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2589 { STRING_COMMA_LEN (".sdata2"), -2, SHT_PROGBITS, SHF_ALLOC },
2590 { STRING_COMMA_LEN (".tags"), 0, SHT_ORDERED, SHF_ALLOC },
2591 { STRING_COMMA_LEN (APUINFO_SECTION_NAME), 0, SHT_NOTE, 0 },
2592 { STRING_COMMA_LEN (".PPC.EMB.sbss0"), 0, SHT_PROGBITS, SHF_ALLOC },
2593 { STRING_COMMA_LEN (".PPC.EMB.sdata0"), 0, SHT_PROGBITS, SHF_ALLOC },
2594 { NULL, 0, 0, 0, 0 }
2595 };
2596
2597 /* This is what we want for new plt/got. */
2598 static struct bfd_elf_special_section ppc_alt_plt =
2599 { STRING_COMMA_LEN (".plt"), 0, SHT_PROGBITS, SHF_ALLOC };
2600
2601 static const struct bfd_elf_special_section *
2602 ppc_elf_get_sec_type_attr (bfd *abfd, asection *sec)
2603 {
2604 const struct bfd_elf_special_section *ssect;
2605
2606 /* See if this is one of the special sections. */
2607 if (sec->name == NULL)
2608 return NULL;
2609
2610 ssect = _bfd_elf_get_special_section (sec->name, ppc_elf_special_sections,
2611 sec->use_rela_p);
2612 if (ssect != NULL)
2613 {
2614 if (ssect == ppc_elf_special_sections && (sec->flags & SEC_LOAD) != 0)
2615 ssect = &ppc_alt_plt;
2616 return ssect;
2617 }
2618
2619 return _bfd_elf_get_sec_type_attr (abfd, sec);
2620 }
2621 \f
2622 /* Very simple linked list structure for recording apuinfo values. */
2623 typedef struct apuinfo_list
2624 {
2625 struct apuinfo_list *next;
2626 unsigned long value;
2627 }
2628 apuinfo_list;
2629
2630 static apuinfo_list *head;
2631 static bfd_boolean apuinfo_set;
2632
2633 static void
2634 apuinfo_list_init (void)
2635 {
2636 head = NULL;
2637 apuinfo_set = FALSE;
2638 }
2639
2640 static void
2641 apuinfo_list_add (unsigned long value)
2642 {
2643 apuinfo_list *entry = head;
2644
2645 while (entry != NULL)
2646 {
2647 if (entry->value == value)
2648 return;
2649 entry = entry->next;
2650 }
2651
2652 entry = bfd_malloc (sizeof (* entry));
2653 if (entry == NULL)
2654 return;
2655
2656 entry->value = value;
2657 entry->next = head;
2658 head = entry;
2659 }
2660
2661 static unsigned
2662 apuinfo_list_length (void)
2663 {
2664 apuinfo_list *entry;
2665 unsigned long count;
2666
2667 for (entry = head, count = 0;
2668 entry;
2669 entry = entry->next)
2670 ++ count;
2671
2672 return count;
2673 }
2674
2675 static inline unsigned long
2676 apuinfo_list_element (unsigned long number)
2677 {
2678 apuinfo_list * entry;
2679
2680 for (entry = head;
2681 entry && number --;
2682 entry = entry->next)
2683 ;
2684
2685 return entry ? entry->value : 0;
2686 }
2687
2688 static void
2689 apuinfo_list_finish (void)
2690 {
2691 apuinfo_list *entry;
2692
2693 for (entry = head; entry;)
2694 {
2695 apuinfo_list *next = entry->next;
2696 free (entry);
2697 entry = next;
2698 }
2699
2700 head = NULL;
2701 }
2702
2703 /* Scan the input BFDs and create a linked list of
2704 the APUinfo values that will need to be emitted. */
2705
2706 static void
2707 ppc_elf_begin_write_processing (bfd *abfd, struct bfd_link_info *link_info)
2708 {
2709 bfd *ibfd;
2710 asection *asec;
2711 char *buffer = NULL;
2712 bfd_size_type largest_input_size = 0;
2713 unsigned i;
2714 unsigned long length;
2715 const char *error_message = NULL;
2716
2717 if (link_info == NULL)
2718 return;
2719
2720 apuinfo_list_init ();
2721
2722 /* Read in the input sections contents. */
2723 for (ibfd = link_info->input_bfds; ibfd; ibfd = ibfd->link.next)
2724 {
2725 unsigned long datum;
2726
2727 asec = bfd_get_section_by_name (ibfd, APUINFO_SECTION_NAME);
2728 if (asec == NULL)
2729 continue;
2730
2731 /* xgettext:c-format */
2732 error_message = _("corrupt %s section in %B");
2733 length = asec->size;
2734 if (length < 20)
2735 goto fail;
2736
2737 apuinfo_set = TRUE;
2738 if (largest_input_size < asec->size)
2739 {
2740 if (buffer)
2741 free (buffer);
2742 largest_input_size = asec->size;
2743 buffer = bfd_malloc (largest_input_size);
2744 if (!buffer)
2745 return;
2746 }
2747
2748 if (bfd_seek (ibfd, asec->filepos, SEEK_SET) != 0
2749 || (bfd_bread (buffer, length, ibfd) != length))
2750 {
2751 /* xgettext:c-format */
2752 error_message = _("unable to read in %s section from %B");
2753 goto fail;
2754 }
2755
2756 /* Verify the contents of the header. Note - we have to
2757 extract the values this way in order to allow for a
2758 host whose endian-ness is different from the target. */
2759 datum = bfd_get_32 (ibfd, buffer);
2760 if (datum != sizeof APUINFO_LABEL)
2761 goto fail;
2762
2763 datum = bfd_get_32 (ibfd, buffer + 8);
2764 if (datum != 0x2)
2765 goto fail;
2766
2767 if (strcmp (buffer + 12, APUINFO_LABEL) != 0)
2768 goto fail;
2769
2770 /* Get the number of bytes used for apuinfo entries. */
2771 datum = bfd_get_32 (ibfd, buffer + 4);
2772 if (datum + 20 != length)
2773 goto fail;
2774
2775 /* Scan the apuinfo section, building a list of apuinfo numbers. */
2776 for (i = 0; i < datum; i += 4)
2777 apuinfo_list_add (bfd_get_32 (ibfd, buffer + 20 + i));
2778 }
2779
2780 error_message = NULL;
2781
2782 if (apuinfo_set)
2783 {
2784 /* Compute the size of the output section. */
2785 unsigned num_entries = apuinfo_list_length ();
2786
2787 /* Set the output section size, if it exists. */
2788 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2789
2790 if (asec && ! bfd_set_section_size (abfd, asec, 20 + num_entries * 4))
2791 {
2792 ibfd = abfd;
2793 /* xgettext:c-format */
2794 error_message = _("warning: unable to set size of %s section in %B");
2795 }
2796 }
2797
2798 fail:
2799 if (buffer)
2800 free (buffer);
2801
2802 if (error_message)
2803 _bfd_error_handler (error_message, APUINFO_SECTION_NAME, ibfd);
2804 }
2805
2806 /* Prevent the output section from accumulating the input sections'
2807 contents. We have already stored this in our linked list structure. */
2808
2809 static bfd_boolean
2810 ppc_elf_write_section (bfd *abfd ATTRIBUTE_UNUSED,
2811 struct bfd_link_info *link_info ATTRIBUTE_UNUSED,
2812 asection *asec,
2813 bfd_byte *contents ATTRIBUTE_UNUSED)
2814 {
2815 return apuinfo_set && strcmp (asec->name, APUINFO_SECTION_NAME) == 0;
2816 }
2817
2818 /* Finally we can generate the output section. */
2819
2820 static void
2821 ppc_elf_final_write_processing (bfd *abfd, bfd_boolean linker ATTRIBUTE_UNUSED)
2822 {
2823 bfd_byte *buffer;
2824 asection *asec;
2825 unsigned i;
2826 unsigned num_entries;
2827 bfd_size_type length;
2828
2829 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2830 if (asec == NULL)
2831 return;
2832
2833 if (!apuinfo_set)
2834 return;
2835
2836 length = asec->size;
2837 if (length < 20)
2838 return;
2839
2840 buffer = bfd_malloc (length);
2841 if (buffer == NULL)
2842 {
2843 _bfd_error_handler
2844 (_("failed to allocate space for new APUinfo section."));
2845 return;
2846 }
2847
2848 /* Create the apuinfo header. */
2849 num_entries = apuinfo_list_length ();
2850 bfd_put_32 (abfd, sizeof APUINFO_LABEL, buffer);
2851 bfd_put_32 (abfd, num_entries * 4, buffer + 4);
2852 bfd_put_32 (abfd, 0x2, buffer + 8);
2853 strcpy ((char *) buffer + 12, APUINFO_LABEL);
2854
2855 length = 20;
2856 for (i = 0; i < num_entries; i++)
2857 {
2858 bfd_put_32 (abfd, apuinfo_list_element (i), buffer + length);
2859 length += 4;
2860 }
2861
2862 if (length != asec->size)
2863 _bfd_error_handler (_("failed to compute new APUinfo section."));
2864
2865 if (! bfd_set_section_contents (abfd, asec, buffer, (file_ptr) 0, length))
2866 _bfd_error_handler (_("failed to install new APUinfo section."));
2867
2868 free (buffer);
2869
2870 apuinfo_list_finish ();
2871 }
2872 \f
2873 static bfd_boolean
2874 is_nonpic_glink_stub (bfd *abfd, asection *glink, bfd_vma off)
2875 {
2876 bfd_byte buf[GLINK_ENTRY_SIZE];
2877
2878 if (!bfd_get_section_contents (abfd, glink, buf, off, GLINK_ENTRY_SIZE))
2879 return FALSE;
2880
2881 return ((bfd_get_32 (abfd, buf + 0) & 0xffff0000) == LIS_11
2882 && (bfd_get_32 (abfd, buf + 4) & 0xffff0000) == LWZ_11_11
2883 && bfd_get_32 (abfd, buf + 8) == MTCTR_11
2884 && bfd_get_32 (abfd, buf + 12) == BCTR);
2885 }
2886
2887 static bfd_boolean
2888 section_covers_vma (bfd *abfd ATTRIBUTE_UNUSED, asection *section, void *ptr)
2889 {
2890 bfd_vma vma = *(bfd_vma *) ptr;
2891 return ((section->flags & SEC_ALLOC) != 0
2892 && section->vma <= vma
2893 && vma < section->vma + section->size);
2894 }
2895
2896 static long
2897 ppc_elf_get_synthetic_symtab (bfd *abfd, long symcount, asymbol **syms,
2898 long dynsymcount, asymbol **dynsyms,
2899 asymbol **ret)
2900 {
2901 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
2902 asection *plt, *relplt, *dynamic, *glink;
2903 bfd_vma glink_vma = 0;
2904 bfd_vma resolv_vma = 0;
2905 bfd_vma stub_vma;
2906 asymbol *s;
2907 arelent *p;
2908 long count, i;
2909 size_t size;
2910 char *names;
2911 bfd_byte buf[4];
2912
2913 *ret = NULL;
2914
2915 if ((abfd->flags & (DYNAMIC | EXEC_P)) == 0)
2916 return 0;
2917
2918 if (dynsymcount <= 0)
2919 return 0;
2920
2921 relplt = bfd_get_section_by_name (abfd, ".rela.plt");
2922 if (relplt == NULL)
2923 return 0;
2924
2925 plt = bfd_get_section_by_name (abfd, ".plt");
2926 if (plt == NULL)
2927 return 0;
2928
2929 /* Call common code to handle old-style executable PLTs. */
2930 if (elf_section_flags (plt) & SHF_EXECINSTR)
2931 return _bfd_elf_get_synthetic_symtab (abfd, symcount, syms,
2932 dynsymcount, dynsyms, ret);
2933
2934 /* If this object was prelinked, the prelinker stored the address
2935 of .glink at got[1]. If it wasn't prelinked, got[1] will be zero. */
2936 dynamic = bfd_get_section_by_name (abfd, ".dynamic");
2937 if (dynamic != NULL)
2938 {
2939 bfd_byte *dynbuf, *extdyn, *extdynend;
2940 size_t extdynsize;
2941 void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *);
2942
2943 if (!bfd_malloc_and_get_section (abfd, dynamic, &dynbuf))
2944 return -1;
2945
2946 extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn;
2947 swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in;
2948
2949 extdyn = dynbuf;
2950 extdynend = extdyn + dynamic->size;
2951 for (; extdyn < extdynend; extdyn += extdynsize)
2952 {
2953 Elf_Internal_Dyn dyn;
2954 (*swap_dyn_in) (abfd, extdyn, &dyn);
2955
2956 if (dyn.d_tag == DT_NULL)
2957 break;
2958
2959 if (dyn.d_tag == DT_PPC_GOT)
2960 {
2961 unsigned int g_o_t = dyn.d_un.d_val;
2962 asection *got = bfd_get_section_by_name (abfd, ".got");
2963 if (got != NULL
2964 && bfd_get_section_contents (abfd, got, buf,
2965 g_o_t - got->vma + 4, 4))
2966 glink_vma = bfd_get_32 (abfd, buf);
2967 break;
2968 }
2969 }
2970 free (dynbuf);
2971 }
2972
2973 /* Otherwise we read the first plt entry. */
2974 if (glink_vma == 0)
2975 {
2976 if (bfd_get_section_contents (abfd, plt, buf, 0, 4))
2977 glink_vma = bfd_get_32 (abfd, buf);
2978 }
2979
2980 if (glink_vma == 0)
2981 return 0;
2982
2983 /* The .glink section usually does not survive the final
2984 link; search for the section (usually .text) where the
2985 glink stubs now reside. */
2986 glink = bfd_sections_find_if (abfd, section_covers_vma, &glink_vma);
2987 if (glink == NULL)
2988 return 0;
2989
2990 /* Determine glink PLT resolver by reading the relative branch
2991 from the first glink stub. */
2992 if (bfd_get_section_contents (abfd, glink, buf,
2993 glink_vma - glink->vma, 4))
2994 {
2995 unsigned int insn = bfd_get_32 (abfd, buf);
2996
2997 /* The first glink stub may either branch to the resolver ... */
2998 insn ^= B;
2999 if ((insn & ~0x3fffffc) == 0)
3000 resolv_vma = glink_vma + (insn ^ 0x2000000) - 0x2000000;
3001
3002 /* ... or fall through a bunch of NOPs. */
3003 else if ((insn ^ B ^ NOP) == 0)
3004 for (i = 4;
3005 bfd_get_section_contents (abfd, glink, buf,
3006 glink_vma - glink->vma + i, 4);
3007 i += 4)
3008 if (bfd_get_32 (abfd, buf) != NOP)
3009 {
3010 resolv_vma = glink_vma + i;
3011 break;
3012 }
3013 }
3014
3015 count = relplt->size / sizeof (Elf32_External_Rela);
3016 /* If the stubs are those for -shared/-pie then we might have
3017 multiple stubs for each plt entry. If that is the case then
3018 there is no way to associate stubs with their plt entries short
3019 of figuring out the GOT pointer value used in the stub. */
3020 if (!is_nonpic_glink_stub (abfd, glink,
3021 glink_vma - GLINK_ENTRY_SIZE - glink->vma))
3022 return 0;
3023
3024 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
3025 if (! (*slurp_relocs) (abfd, relplt, dynsyms, TRUE))
3026 return -1;
3027
3028 size = count * sizeof (asymbol);
3029 p = relplt->relocation;
3030 for (i = 0; i < count; i++, p++)
3031 {
3032 size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt");
3033 if (p->addend != 0)
3034 size += sizeof ("+0x") - 1 + 8;
3035 }
3036
3037 size += sizeof (asymbol) + sizeof ("__glink");
3038
3039 if (resolv_vma)
3040 size += sizeof (asymbol) + sizeof ("__glink_PLTresolve");
3041
3042 s = *ret = bfd_malloc (size);
3043 if (s == NULL)
3044 return -1;
3045
3046 stub_vma = glink_vma;
3047 names = (char *) (s + count + 1 + (resolv_vma != 0));
3048 p = relplt->relocation + count - 1;
3049 for (i = 0; i < count; i++)
3050 {
3051 size_t len;
3052
3053 *s = **p->sym_ptr_ptr;
3054 /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since
3055 we are defining a symbol, ensure one of them is set. */
3056 if ((s->flags & BSF_LOCAL) == 0)
3057 s->flags |= BSF_GLOBAL;
3058 s->flags |= BSF_SYNTHETIC;
3059 s->section = glink;
3060 stub_vma -= 16;
3061 if (strcmp ((*p->sym_ptr_ptr)->name, "__tls_get_addr_opt") == 0)
3062 stub_vma -= 32;
3063 s->value = stub_vma - glink->vma;
3064 s->name = names;
3065 s->udata.p = NULL;
3066 len = strlen ((*p->sym_ptr_ptr)->name);
3067 memcpy (names, (*p->sym_ptr_ptr)->name, len);
3068 names += len;
3069 if (p->addend != 0)
3070 {
3071 memcpy (names, "+0x", sizeof ("+0x") - 1);
3072 names += sizeof ("+0x") - 1;
3073 bfd_sprintf_vma (abfd, names, p->addend);
3074 names += strlen (names);
3075 }
3076 memcpy (names, "@plt", sizeof ("@plt"));
3077 names += sizeof ("@plt");
3078 ++s;
3079 --p;
3080 }
3081
3082 /* Add a symbol at the start of the glink branch table. */
3083 memset (s, 0, sizeof *s);
3084 s->the_bfd = abfd;
3085 s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
3086 s->section = glink;
3087 s->value = glink_vma - glink->vma;
3088 s->name = names;
3089 memcpy (names, "__glink", sizeof ("__glink"));
3090 names += sizeof ("__glink");
3091 s++;
3092 count++;
3093
3094 if (resolv_vma)
3095 {
3096 /* Add a symbol for the glink PLT resolver. */
3097 memset (s, 0, sizeof *s);
3098 s->the_bfd = abfd;
3099 s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
3100 s->section = glink;
3101 s->value = resolv_vma - glink->vma;
3102 s->name = names;
3103 memcpy (names, "__glink_PLTresolve", sizeof ("__glink_PLTresolve"));
3104 names += sizeof ("__glink_PLTresolve");
3105 s++;
3106 count++;
3107 }
3108
3109 return count;
3110 }
3111 \f
3112 /* The following functions are specific to the ELF linker, while
3113 functions above are used generally. They appear in this file more
3114 or less in the order in which they are called. eg.
3115 ppc_elf_check_relocs is called early in the link process,
3116 ppc_elf_finish_dynamic_sections is one of the last functions
3117 called. */
3118
3119 /* Track PLT entries needed for a given symbol. We might need more
3120 than one glink entry per symbol when generating a pic binary. */
3121 struct plt_entry
3122 {
3123 struct plt_entry *next;
3124
3125 /* -fPIC uses multiple GOT sections, one per file, called ".got2".
3126 This field stores the offset into .got2 used to initialise the
3127 GOT pointer reg. It will always be at least 32768. (Current
3128 gcc always uses an offset of 32768, but ld -r will pack .got2
3129 sections together resulting in larger offsets). */
3130 bfd_vma addend;
3131
3132 /* The .got2 section. */
3133 asection *sec;
3134
3135 /* PLT refcount or offset. */
3136 union
3137 {
3138 bfd_signed_vma refcount;
3139 bfd_vma offset;
3140 } plt;
3141
3142 /* .glink stub offset. */
3143 bfd_vma glink_offset;
3144 };
3145
3146 /* Of those relocs that might be copied as dynamic relocs, this
3147 function selects those that must be copied when linking a shared
3148 library or PIE, even when the symbol is local. */
3149
3150 static int
3151 must_be_dyn_reloc (struct bfd_link_info *info,
3152 enum elf_ppc_reloc_type r_type)
3153 {
3154 switch (r_type)
3155 {
3156 default:
3157 /* Only relative relocs can be resolved when the object load
3158 address isn't fixed. DTPREL32 is excluded because the
3159 dynamic linker needs to differentiate global dynamic from
3160 local dynamic __tls_index pairs when PPC_OPT_TLS is set. */
3161 return 1;
3162
3163 case R_PPC_REL24:
3164 case R_PPC_REL14:
3165 case R_PPC_REL14_BRTAKEN:
3166 case R_PPC_REL14_BRNTAKEN:
3167 case R_PPC_REL32:
3168 return 0;
3169
3170 case R_PPC_TPREL32:
3171 case R_PPC_TPREL16:
3172 case R_PPC_TPREL16_LO:
3173 case R_PPC_TPREL16_HI:
3174 case R_PPC_TPREL16_HA:
3175 /* These relocations are relative but in a shared library the
3176 linker doesn't know the thread pointer base. */
3177 return bfd_link_dll (info);
3178 }
3179 }
3180
3181 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
3182 copying dynamic variables from a shared lib into an app's dynbss
3183 section, and instead use a dynamic relocation to point into the
3184 shared lib. */
3185 #define ELIMINATE_COPY_RELOCS 1
3186
3187 /* Used to track dynamic relocations for local symbols. */
3188 struct ppc_dyn_relocs
3189 {
3190 struct ppc_dyn_relocs *next;
3191
3192 /* The input section of the reloc. */
3193 asection *sec;
3194
3195 /* Total number of relocs copied for the input section. */
3196 unsigned int count : 31;
3197
3198 /* Whether this entry is for STT_GNU_IFUNC symbols. */
3199 unsigned int ifunc : 1;
3200 };
3201
3202 /* PPC ELF linker hash entry. */
3203
3204 struct ppc_elf_link_hash_entry
3205 {
3206 struct elf_link_hash_entry elf;
3207
3208 /* If this symbol is used in the linker created sections, the processor
3209 specific backend uses this field to map the field into the offset
3210 from the beginning of the section. */
3211 elf_linker_section_pointers_t *linker_section_pointer;
3212
3213 /* Track dynamic relocs copied for this symbol. */
3214 struct elf_dyn_relocs *dyn_relocs;
3215
3216 /* Contexts in which symbol is used in the GOT (or TOC).
3217 TLS_GD .. TLS_TLS bits are or'd into the mask as the
3218 corresponding relocs are encountered during check_relocs.
3219 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
3220 indicate the corresponding GOT entry type is not needed. */
3221 #define TLS_GD 1 /* GD reloc. */
3222 #define TLS_LD 2 /* LD reloc. */
3223 #define TLS_TPREL 4 /* TPREL reloc, => IE. */
3224 #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
3225 #define TLS_TLS 16 /* Any TLS reloc. */
3226 #define TLS_TPRELGD 32 /* TPREL reloc resulting from GD->IE. */
3227 #define PLT_IFUNC 64 /* STT_GNU_IFUNC. */
3228 char tls_mask;
3229
3230 /* Nonzero if we have seen a small data relocation referring to this
3231 symbol. */
3232 unsigned char has_sda_refs : 1;
3233
3234 /* Flag use of given relocations. */
3235 unsigned char has_addr16_ha : 1;
3236 unsigned char has_addr16_lo : 1;
3237 };
3238
3239 #define ppc_elf_hash_entry(ent) ((struct ppc_elf_link_hash_entry *) (ent))
3240
3241 /* PPC ELF linker hash table. */
3242
3243 struct ppc_elf_link_hash_table
3244 {
3245 struct elf_link_hash_table elf;
3246
3247 /* Various options passed from the linker. */
3248 struct ppc_elf_params *params;
3249
3250 /* Short-cuts to get to dynamic linker sections. */
3251 asection *glink;
3252 asection *dynsbss;
3253 asection *relsbss;
3254 elf_linker_section_t sdata[2];
3255 asection *sbss;
3256 asection *glink_eh_frame;
3257
3258 /* The (unloaded but important) .rela.plt.unloaded on VxWorks. */
3259 asection *srelplt2;
3260
3261 /* Shortcut to __tls_get_addr. */
3262 struct elf_link_hash_entry *tls_get_addr;
3263
3264 /* The bfd that forced an old-style PLT. */
3265 bfd *old_bfd;
3266
3267 /* TLS local dynamic got entry handling. */
3268 union {
3269 bfd_signed_vma refcount;
3270 bfd_vma offset;
3271 } tlsld_got;
3272
3273 /* Offset of branch table to PltResolve function in glink. */
3274 bfd_vma glink_pltresolve;
3275
3276 /* Size of reserved GOT entries. */
3277 unsigned int got_header_size;
3278 /* Non-zero if allocating the header left a gap. */
3279 unsigned int got_gap;
3280
3281 /* The type of PLT we have chosen to use. */
3282 enum ppc_elf_plt_type plt_type;
3283
3284 /* True if the target system is VxWorks. */
3285 unsigned int is_vxworks:1;
3286
3287 /* Whether there exist local gnu indirect function resolvers,
3288 referenced by dynamic relocations. */
3289 unsigned int local_ifunc_resolver:1;
3290 unsigned int maybe_local_ifunc_resolver:1;
3291
3292 /* Set if tls optimization is enabled. */
3293 unsigned int do_tls_opt:1;
3294
3295 /* The size of PLT entries. */
3296 int plt_entry_size;
3297 /* The distance between adjacent PLT slots. */
3298 int plt_slot_size;
3299 /* The size of the first PLT entry. */
3300 int plt_initial_entry_size;
3301
3302 /* Small local sym cache. */
3303 struct sym_cache sym_cache;
3304 };
3305
3306 /* Rename some of the generic section flags to better document how they
3307 are used for ppc32. The flags are only valid for ppc32 elf objects. */
3308
3309 /* Nonzero if this section has TLS related relocations. */
3310 #define has_tls_reloc sec_flg0
3311
3312 /* Nonzero if this section has a call to __tls_get_addr. */
3313 #define has_tls_get_addr_call sec_flg1
3314
3315 /* Get the PPC ELF linker hash table from a link_info structure. */
3316
3317 #define ppc_elf_hash_table(p) \
3318 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
3319 == PPC32_ELF_DATA ? ((struct ppc_elf_link_hash_table *) ((p)->hash)) : NULL)
3320
3321 /* Create an entry in a PPC ELF linker hash table. */
3322
3323 static struct bfd_hash_entry *
3324 ppc_elf_link_hash_newfunc (struct bfd_hash_entry *entry,
3325 struct bfd_hash_table *table,
3326 const char *string)
3327 {
3328 /* Allocate the structure if it has not already been allocated by a
3329 subclass. */
3330 if (entry == NULL)
3331 {
3332 entry = bfd_hash_allocate (table,
3333 sizeof (struct ppc_elf_link_hash_entry));
3334 if (entry == NULL)
3335 return entry;
3336 }
3337
3338 /* Call the allocation method of the superclass. */
3339 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
3340 if (entry != NULL)
3341 {
3342 ppc_elf_hash_entry (entry)->linker_section_pointer = NULL;
3343 ppc_elf_hash_entry (entry)->dyn_relocs = NULL;
3344 ppc_elf_hash_entry (entry)->tls_mask = 0;
3345 ppc_elf_hash_entry (entry)->has_sda_refs = 0;
3346 }
3347
3348 return entry;
3349 }
3350
3351 /* Create a PPC ELF linker hash table. */
3352
3353 static struct bfd_link_hash_table *
3354 ppc_elf_link_hash_table_create (bfd *abfd)
3355 {
3356 struct ppc_elf_link_hash_table *ret;
3357 static struct ppc_elf_params default_params
3358 = { PLT_OLD, 0, 1, 0, 0, 12, 0, 0, 0 };
3359
3360 ret = bfd_zmalloc (sizeof (struct ppc_elf_link_hash_table));
3361 if (ret == NULL)
3362 return NULL;
3363
3364 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd,
3365 ppc_elf_link_hash_newfunc,
3366 sizeof (struct ppc_elf_link_hash_entry),
3367 PPC32_ELF_DATA))
3368 {
3369 free (ret);
3370 return NULL;
3371 }
3372
3373 ret->elf.init_plt_refcount.refcount = 0;
3374 ret->elf.init_plt_refcount.glist = NULL;
3375 ret->elf.init_plt_offset.offset = 0;
3376 ret->elf.init_plt_offset.glist = NULL;
3377
3378 ret->params = &default_params;
3379
3380 ret->sdata[0].name = ".sdata";
3381 ret->sdata[0].sym_name = "_SDA_BASE_";
3382 ret->sdata[0].bss_name = ".sbss";
3383
3384 ret->sdata[1].name = ".sdata2";
3385 ret->sdata[1].sym_name = "_SDA2_BASE_";
3386 ret->sdata[1].bss_name = ".sbss2";
3387
3388 ret->plt_entry_size = 12;
3389 ret->plt_slot_size = 8;
3390 ret->plt_initial_entry_size = 72;
3391
3392 return &ret->elf.root;
3393 }
3394
3395 /* Hook linker params into hash table. */
3396
3397 void
3398 ppc_elf_link_params (struct bfd_link_info *info, struct ppc_elf_params *params)
3399 {
3400 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
3401
3402 if (htab)
3403 htab->params = params;
3404 params->pagesize_p2 = bfd_log2 (params->pagesize);
3405 }
3406
3407 /* Create .got and the related sections. */
3408
3409 static bfd_boolean
3410 ppc_elf_create_got (bfd *abfd, struct bfd_link_info *info)
3411 {
3412 struct ppc_elf_link_hash_table *htab;
3413
3414 if (!_bfd_elf_create_got_section (abfd, info))
3415 return FALSE;
3416
3417 htab = ppc_elf_hash_table (info);
3418 if (!htab->is_vxworks)
3419 {
3420 /* The powerpc .got has a blrl instruction in it. Mark it
3421 executable. */
3422 flagword flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS
3423 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3424 if (!bfd_set_section_flags (abfd, htab->elf.sgot, flags))
3425 return FALSE;
3426 }
3427
3428 return TRUE;
3429 }
3430
3431 /* Create a special linker section, used for R_PPC_EMB_SDAI16 and
3432 R_PPC_EMB_SDA2I16 pointers. These sections become part of .sdata
3433 and .sdata2. Create _SDA_BASE_ and _SDA2_BASE too. */
3434
3435 static bfd_boolean
3436 ppc_elf_create_linker_section (bfd *abfd,
3437 struct bfd_link_info *info,
3438 flagword flags,
3439 elf_linker_section_t *lsect)
3440 {
3441 asection *s;
3442
3443 flags |= (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
3444 | SEC_LINKER_CREATED);
3445
3446 s = bfd_make_section_anyway_with_flags (abfd, lsect->name, flags);
3447 if (s == NULL)
3448 return FALSE;
3449 lsect->section = s;
3450
3451 /* Define the sym on the first section of this name. */
3452 s = bfd_get_section_by_name (abfd, lsect->name);
3453
3454 lsect->sym = _bfd_elf_define_linkage_sym (abfd, info, s, lsect->sym_name);
3455 if (lsect->sym == NULL)
3456 return FALSE;
3457 lsect->sym->root.u.def.value = 0x8000;
3458 return TRUE;
3459 }
3460
3461 static bfd_boolean
3462 ppc_elf_create_glink (bfd *abfd, struct bfd_link_info *info)
3463 {
3464 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
3465 asection *s;
3466 flagword flags;
3467
3468 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY | SEC_HAS_CONTENTS
3469 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3470 s = bfd_make_section_anyway_with_flags (abfd, ".glink", flags);
3471 htab->glink = s;
3472 if (s == NULL
3473 || !bfd_set_section_alignment (abfd, s,
3474 htab->params->ppc476_workaround ? 6 : 4))
3475 return FALSE;
3476
3477 if (!info->no_ld_generated_unwind_info)
3478 {
3479 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
3480 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3481 s = bfd_make_section_anyway_with_flags (abfd, ".eh_frame", flags);
3482 htab->glink_eh_frame = s;
3483 if (s == NULL
3484 || !bfd_set_section_alignment (abfd, s, 2))
3485 return FALSE;
3486 }
3487
3488 flags = SEC_ALLOC | SEC_LINKER_CREATED;
3489 s = bfd_make_section_anyway_with_flags (abfd, ".iplt", flags);
3490 htab->elf.iplt = s;
3491 if (s == NULL
3492 || !bfd_set_section_alignment (abfd, s, 4))
3493 return FALSE;
3494
3495 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
3496 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3497 s = bfd_make_section_anyway_with_flags (abfd, ".rela.iplt", flags);
3498 htab->elf.irelplt = s;
3499 if (s == NULL
3500 || ! bfd_set_section_alignment (abfd, s, 2))
3501 return FALSE;
3502
3503 if (!ppc_elf_create_linker_section (abfd, info, 0,
3504 &htab->sdata[0]))
3505 return FALSE;
3506
3507 if (!ppc_elf_create_linker_section (abfd, info, SEC_READONLY,
3508 &htab->sdata[1]))
3509 return FALSE;
3510
3511 return TRUE;
3512 }
3513
3514 /* We have to create .dynsbss and .rela.sbss here so that they get mapped
3515 to output sections (just like _bfd_elf_create_dynamic_sections has
3516 to create .dynbss and .rela.bss). */
3517
3518 static bfd_boolean
3519 ppc_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
3520 {
3521 struct ppc_elf_link_hash_table *htab;
3522 asection *s;
3523 flagword flags;
3524
3525 htab = ppc_elf_hash_table (info);
3526
3527 if (htab->elf.sgot == NULL
3528 && !ppc_elf_create_got (abfd, info))
3529 return FALSE;
3530
3531 if (!_bfd_elf_create_dynamic_sections (abfd, info))
3532 return FALSE;
3533
3534 if (htab->glink == NULL
3535 && !ppc_elf_create_glink (abfd, info))
3536 return FALSE;
3537
3538 s = bfd_make_section_anyway_with_flags (abfd, ".dynsbss",
3539 SEC_ALLOC | SEC_LINKER_CREATED);
3540 htab->dynsbss = s;
3541 if (s == NULL)
3542 return FALSE;
3543
3544 if (! bfd_link_pic (info))
3545 {
3546 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
3547 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3548 s = bfd_make_section_anyway_with_flags (abfd, ".rela.sbss", flags);
3549 htab->relsbss = s;
3550 if (s == NULL
3551 || ! bfd_set_section_alignment (abfd, s, 2))
3552 return FALSE;
3553 }
3554
3555 if (htab->is_vxworks
3556 && !elf_vxworks_create_dynamic_sections (abfd, info, &htab->srelplt2))
3557 return FALSE;
3558
3559 s = htab->elf.splt;
3560 flags = SEC_ALLOC | SEC_CODE | SEC_LINKER_CREATED;
3561 if (htab->plt_type == PLT_VXWORKS)
3562 /* The VxWorks PLT is a loaded section with contents. */
3563 flags |= SEC_HAS_CONTENTS | SEC_LOAD | SEC_READONLY;
3564 return bfd_set_section_flags (abfd, s, flags);
3565 }
3566
3567 /* Copy the extra info we tack onto an elf_link_hash_entry. */
3568
3569 static void
3570 ppc_elf_copy_indirect_symbol (struct bfd_link_info *info,
3571 struct elf_link_hash_entry *dir,
3572 struct elf_link_hash_entry *ind)
3573 {
3574 struct ppc_elf_link_hash_entry *edir, *eind;
3575
3576 edir = (struct ppc_elf_link_hash_entry *) dir;
3577 eind = (struct ppc_elf_link_hash_entry *) ind;
3578
3579 edir->tls_mask |= eind->tls_mask;
3580 edir->has_sda_refs |= eind->has_sda_refs;
3581
3582 /* If called to transfer flags for a weakdef during processing
3583 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
3584 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
3585 if (!(ELIMINATE_COPY_RELOCS
3586 && eind->elf.root.type != bfd_link_hash_indirect
3587 && edir->elf.dynamic_adjusted))
3588 edir->elf.non_got_ref |= eind->elf.non_got_ref;
3589
3590 if (edir->elf.versioned != versioned_hidden)
3591 edir->elf.ref_dynamic |= eind->elf.ref_dynamic;
3592 edir->elf.ref_regular |= eind->elf.ref_regular;
3593 edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak;
3594 edir->elf.needs_plt |= eind->elf.needs_plt;
3595 edir->elf.pointer_equality_needed |= eind->elf.pointer_equality_needed;
3596
3597 if (eind->dyn_relocs != NULL)
3598 {
3599 if (edir->dyn_relocs != NULL)
3600 {
3601 struct elf_dyn_relocs **pp;
3602 struct elf_dyn_relocs *p;
3603
3604 /* Add reloc counts against the indirect sym to the direct sym
3605 list. Merge any entries against the same section. */
3606 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
3607 {
3608 struct elf_dyn_relocs *q;
3609
3610 for (q = edir->dyn_relocs; q != NULL; q = q->next)
3611 if (q->sec == p->sec)
3612 {
3613 q->pc_count += p->pc_count;
3614 q->count += p->count;
3615 *pp = p->next;
3616 break;
3617 }
3618 if (q == NULL)
3619 pp = &p->next;
3620 }
3621 *pp = edir->dyn_relocs;
3622 }
3623
3624 edir->dyn_relocs = eind->dyn_relocs;
3625 eind->dyn_relocs = NULL;
3626 }
3627
3628 /* If we were called to copy over info for a weak sym, that's all.
3629 You might think dyn_relocs need not be copied over; After all,
3630 both syms will be dynamic or both non-dynamic so we're just
3631 moving reloc accounting around. However, ELIMINATE_COPY_RELOCS
3632 code in ppc_elf_adjust_dynamic_symbol needs to check for
3633 dyn_relocs in read-only sections, and it does so on what is the
3634 DIR sym here. */
3635 if (eind->elf.root.type != bfd_link_hash_indirect)
3636 return;
3637
3638 /* Copy over the GOT refcount entries that we may have already seen to
3639 the symbol which just became indirect. */
3640 edir->elf.got.refcount += eind->elf.got.refcount;
3641 eind->elf.got.refcount = 0;
3642
3643 /* And plt entries. */
3644 if (eind->elf.plt.plist != NULL)
3645 {
3646 if (edir->elf.plt.plist != NULL)
3647 {
3648 struct plt_entry **entp;
3649 struct plt_entry *ent;
3650
3651 for (entp = &eind->elf.plt.plist; (ent = *entp) != NULL; )
3652 {
3653 struct plt_entry *dent;
3654
3655 for (dent = edir->elf.plt.plist; dent != NULL; dent = dent->next)
3656 if (dent->sec == ent->sec && dent->addend == ent->addend)
3657 {
3658 dent->plt.refcount += ent->plt.refcount;
3659 *entp = ent->next;
3660 break;
3661 }
3662 if (dent == NULL)
3663 entp = &ent->next;
3664 }
3665 *entp = edir->elf.plt.plist;
3666 }
3667
3668 edir->elf.plt.plist = eind->elf.plt.plist;
3669 eind->elf.plt.plist = NULL;
3670 }
3671
3672 if (eind->elf.dynindx != -1)
3673 {
3674 if (edir->elf.dynindx != -1)
3675 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
3676 edir->elf.dynstr_index);
3677 edir->elf.dynindx = eind->elf.dynindx;
3678 edir->elf.dynstr_index = eind->elf.dynstr_index;
3679 eind->elf.dynindx = -1;
3680 eind->elf.dynstr_index = 0;
3681 }
3682 }
3683
3684 /* Hook called by the linker routine which adds symbols from an object
3685 file. We use it to put .comm items in .sbss, and not .bss. */
3686
3687 static bfd_boolean
3688 ppc_elf_add_symbol_hook (bfd *abfd,
3689 struct bfd_link_info *info,
3690 Elf_Internal_Sym *sym,
3691 const char **namep ATTRIBUTE_UNUSED,
3692 flagword *flagsp ATTRIBUTE_UNUSED,
3693 asection **secp,
3694 bfd_vma *valp)
3695 {
3696 if (sym->st_shndx == SHN_COMMON
3697 && !bfd_link_relocatable (info)
3698 && is_ppc_elf (info->output_bfd)
3699 && sym->st_size <= elf_gp_size (abfd))
3700 {
3701 /* Common symbols less than or equal to -G nn bytes are automatically
3702 put into .sbss. */
3703 struct ppc_elf_link_hash_table *htab;
3704
3705 htab = ppc_elf_hash_table (info);
3706 if (htab->sbss == NULL)
3707 {
3708 flagword flags = SEC_IS_COMMON | SEC_LINKER_CREATED;
3709
3710 if (!htab->elf.dynobj)
3711 htab->elf.dynobj = abfd;
3712
3713 htab->sbss = bfd_make_section_anyway_with_flags (htab->elf.dynobj,
3714 ".sbss",
3715 flags);
3716 if (htab->sbss == NULL)
3717 return FALSE;
3718 }
3719
3720 *secp = htab->sbss;
3721 *valp = sym->st_size;
3722 }
3723
3724 if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC
3725 && (abfd->flags & DYNAMIC) == 0
3726 && bfd_get_flavour (info->output_bfd) == bfd_target_elf_flavour)
3727 elf_tdata (info->output_bfd)->has_gnu_symbols |= elf_gnu_symbol_ifunc;
3728
3729 return TRUE;
3730 }
3731 \f
3732 /* Find a linker generated pointer with a given addend and type. */
3733
3734 static elf_linker_section_pointers_t *
3735 elf_find_pointer_linker_section
3736 (elf_linker_section_pointers_t *linker_pointers,
3737 bfd_vma addend,
3738 elf_linker_section_t *lsect)
3739 {
3740 for ( ; linker_pointers != NULL; linker_pointers = linker_pointers->next)
3741 if (lsect == linker_pointers->lsect && addend == linker_pointers->addend)
3742 return linker_pointers;
3743
3744 return NULL;
3745 }
3746
3747 /* Allocate a pointer to live in a linker created section. */
3748
3749 static bfd_boolean
3750 elf_allocate_pointer_linker_section (bfd *abfd,
3751 elf_linker_section_t *lsect,
3752 struct elf_link_hash_entry *h,
3753 const Elf_Internal_Rela *rel)
3754 {
3755 elf_linker_section_pointers_t **ptr_linker_section_ptr = NULL;
3756 elf_linker_section_pointers_t *linker_section_ptr;
3757 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
3758 bfd_size_type amt;
3759
3760 BFD_ASSERT (lsect != NULL);
3761
3762 /* Is this a global symbol? */
3763 if (h != NULL)
3764 {
3765 struct ppc_elf_link_hash_entry *eh;
3766
3767 /* Has this symbol already been allocated? If so, our work is done. */
3768 eh = (struct ppc_elf_link_hash_entry *) h;
3769 if (elf_find_pointer_linker_section (eh->linker_section_pointer,
3770 rel->r_addend,
3771 lsect))
3772 return TRUE;
3773
3774 ptr_linker_section_ptr = &eh->linker_section_pointer;
3775 }
3776 else
3777 {
3778 BFD_ASSERT (is_ppc_elf (abfd));
3779
3780 /* Allocation of a pointer to a local symbol. */
3781 elf_linker_section_pointers_t **ptr = elf_local_ptr_offsets (abfd);
3782
3783 /* Allocate a table to hold the local symbols if first time. */
3784 if (!ptr)
3785 {
3786 unsigned int num_symbols = elf_symtab_hdr (abfd).sh_info;
3787
3788 amt = num_symbols;
3789 amt *= sizeof (elf_linker_section_pointers_t *);
3790 ptr = bfd_zalloc (abfd, amt);
3791
3792 if (!ptr)
3793 return FALSE;
3794
3795 elf_local_ptr_offsets (abfd) = ptr;
3796 }
3797
3798 /* Has this symbol already been allocated? If so, our work is done. */
3799 if (elf_find_pointer_linker_section (ptr[r_symndx],
3800 rel->r_addend,
3801 lsect))
3802 return TRUE;
3803
3804 ptr_linker_section_ptr = &ptr[r_symndx];
3805 }
3806
3807 /* Allocate space for a pointer in the linker section, and allocate
3808 a new pointer record from internal memory. */
3809 BFD_ASSERT (ptr_linker_section_ptr != NULL);
3810 amt = sizeof (elf_linker_section_pointers_t);
3811 linker_section_ptr = bfd_alloc (abfd, amt);
3812
3813 if (!linker_section_ptr)
3814 return FALSE;
3815
3816 linker_section_ptr->next = *ptr_linker_section_ptr;
3817 linker_section_ptr->addend = rel->r_addend;
3818 linker_section_ptr->lsect = lsect;
3819 *ptr_linker_section_ptr = linker_section_ptr;
3820
3821 if (!bfd_set_section_alignment (lsect->section->owner, lsect->section, 2))
3822 return FALSE;
3823 linker_section_ptr->offset = lsect->section->size;
3824 lsect->section->size += 4;
3825
3826 #ifdef DEBUG
3827 fprintf (stderr,
3828 "Create pointer in linker section %s, offset = %ld, section size = %ld\n",
3829 lsect->name, (long) linker_section_ptr->offset,
3830 (long) lsect->section->size);
3831 #endif
3832
3833 return TRUE;
3834 }
3835
3836 static struct plt_entry **
3837 update_local_sym_info (bfd *abfd,
3838 Elf_Internal_Shdr *symtab_hdr,
3839 unsigned long r_symndx,
3840 int tls_type)
3841 {
3842 bfd_signed_vma *local_got_refcounts = elf_local_got_refcounts (abfd);
3843 struct plt_entry **local_plt;
3844 char *local_got_tls_masks;
3845
3846 if (local_got_refcounts == NULL)
3847 {
3848 bfd_size_type size = symtab_hdr->sh_info;
3849
3850 size *= (sizeof (*local_got_refcounts)
3851 + sizeof (*local_plt)
3852 + sizeof (*local_got_tls_masks));
3853 local_got_refcounts = bfd_zalloc (abfd, size);
3854 if (local_got_refcounts == NULL)
3855 return NULL;
3856 elf_local_got_refcounts (abfd) = local_got_refcounts;
3857 }
3858
3859 local_plt = (struct plt_entry **) (local_got_refcounts + symtab_hdr->sh_info);
3860 local_got_tls_masks = (char *) (local_plt + symtab_hdr->sh_info);
3861 local_got_tls_masks[r_symndx] |= tls_type;
3862 if (tls_type != PLT_IFUNC)
3863 local_got_refcounts[r_symndx] += 1;
3864 return local_plt + r_symndx;
3865 }
3866
3867 static bfd_boolean
3868 update_plt_info (bfd *abfd, struct plt_entry **plist,
3869 asection *sec, bfd_vma addend)
3870 {
3871 struct plt_entry *ent;
3872
3873 if (addend < 32768)
3874 sec = NULL;
3875 for (ent = *plist; ent != NULL; ent = ent->next)
3876 if (ent->sec == sec && ent->addend == addend)
3877 break;
3878 if (ent == NULL)
3879 {
3880 bfd_size_type amt = sizeof (*ent);
3881 ent = bfd_alloc (abfd, amt);
3882 if (ent == NULL)
3883 return FALSE;
3884 ent->next = *plist;
3885 ent->sec = sec;
3886 ent->addend = addend;
3887 ent->plt.refcount = 0;
3888 *plist = ent;
3889 }
3890 ent->plt.refcount += 1;
3891 return TRUE;
3892 }
3893
3894 static struct plt_entry *
3895 find_plt_ent (struct plt_entry **plist, asection *sec, bfd_vma addend)
3896 {
3897 struct plt_entry *ent;
3898
3899 if (addend < 32768)
3900 sec = NULL;
3901 for (ent = *plist; ent != NULL; ent = ent->next)
3902 if (ent->sec == sec && ent->addend == addend)
3903 break;
3904 return ent;
3905 }
3906
3907 static bfd_boolean
3908 is_branch_reloc (enum elf_ppc_reloc_type r_type)
3909 {
3910 return (r_type == R_PPC_PLTREL24
3911 || r_type == R_PPC_LOCAL24PC
3912 || r_type == R_PPC_REL24
3913 || r_type == R_PPC_REL14
3914 || r_type == R_PPC_REL14_BRTAKEN
3915 || r_type == R_PPC_REL14_BRNTAKEN
3916 || r_type == R_PPC_ADDR24
3917 || r_type == R_PPC_ADDR14
3918 || r_type == R_PPC_ADDR14_BRTAKEN
3919 || r_type == R_PPC_ADDR14_BRNTAKEN
3920 || r_type == R_PPC_VLE_REL24);
3921 }
3922
3923 static void
3924 bad_shared_reloc (bfd *abfd, enum elf_ppc_reloc_type r_type)
3925 {
3926 _bfd_error_handler
3927 /* xgettext:c-format */
3928 (_("%B: relocation %s cannot be used when making a shared object"),
3929 abfd,
3930 ppc_elf_howto_table[r_type]->name);
3931 bfd_set_error (bfd_error_bad_value);
3932 }
3933
3934 /* Look through the relocs for a section during the first phase, and
3935 allocate space in the global offset table or procedure linkage
3936 table. */
3937
3938 static bfd_boolean
3939 ppc_elf_check_relocs (bfd *abfd,
3940 struct bfd_link_info *info,
3941 asection *sec,
3942 const Elf_Internal_Rela *relocs)
3943 {
3944 struct ppc_elf_link_hash_table *htab;
3945 Elf_Internal_Shdr *symtab_hdr;
3946 struct elf_link_hash_entry **sym_hashes;
3947 const Elf_Internal_Rela *rel;
3948 const Elf_Internal_Rela *rel_end;
3949 asection *got2, *sreloc;
3950 struct elf_link_hash_entry *tga;
3951
3952 if (bfd_link_relocatable (info))
3953 return TRUE;
3954
3955 /* Don't do anything special with non-loaded, non-alloced sections.
3956 In particular, any relocs in such sections should not affect GOT
3957 and PLT reference counting (ie. we don't allow them to create GOT
3958 or PLT entries), there's no possibility or desire to optimize TLS
3959 relocs, and there's not much point in propagating relocs to shared
3960 libs that the dynamic linker won't relocate. */
3961 if ((sec->flags & SEC_ALLOC) == 0)
3962 return TRUE;
3963
3964 #ifdef DEBUG
3965 _bfd_error_handler ("ppc_elf_check_relocs called for section %A in %B",
3966 sec, abfd);
3967 #endif
3968
3969 BFD_ASSERT (is_ppc_elf (abfd));
3970
3971 /* Initialize howto table if not already done. */
3972 if (!ppc_elf_howto_table[R_PPC_ADDR32])
3973 ppc_elf_howto_init ();
3974
3975 htab = ppc_elf_hash_table (info);
3976 if (htab->glink == NULL)
3977 {
3978 if (htab->elf.dynobj == NULL)
3979 htab->elf.dynobj = abfd;
3980 if (!ppc_elf_create_glink (htab->elf.dynobj, info))
3981 return FALSE;
3982 }
3983 tga = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
3984 FALSE, FALSE, TRUE);
3985 symtab_hdr = &elf_symtab_hdr (abfd);
3986 sym_hashes = elf_sym_hashes (abfd);
3987 got2 = bfd_get_section_by_name (abfd, ".got2");
3988 sreloc = NULL;
3989
3990 rel_end = relocs + sec->reloc_count;
3991 for (rel = relocs; rel < rel_end; rel++)
3992 {
3993 unsigned long r_symndx;
3994 enum elf_ppc_reloc_type r_type;
3995 struct elf_link_hash_entry *h;
3996 int tls_type;
3997 struct plt_entry **ifunc;
3998
3999 r_symndx = ELF32_R_SYM (rel->r_info);
4000 if (r_symndx < symtab_hdr->sh_info)
4001 h = NULL;
4002 else
4003 {
4004 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4005 while (h->root.type == bfd_link_hash_indirect
4006 || h->root.type == bfd_link_hash_warning)
4007 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4008
4009 /* PR15323, ref flags aren't set for references in the same
4010 object. */
4011 h->root.non_ir_ref_regular = 1;
4012 }
4013
4014 /* If a relocation refers to _GLOBAL_OFFSET_TABLE_, create the .got.
4015 This shows up in particular in an R_PPC_ADDR32 in the eabi
4016 startup code. */
4017 if (h != NULL
4018 && htab->elf.sgot == NULL
4019 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
4020 {
4021 if (htab->elf.dynobj == NULL)
4022 htab->elf.dynobj = abfd;
4023 if (!ppc_elf_create_got (htab->elf.dynobj, info))
4024 return FALSE;
4025 BFD_ASSERT (h == htab->elf.hgot);
4026 }
4027
4028 tls_type = 0;
4029 r_type = ELF32_R_TYPE (rel->r_info);
4030 ifunc = NULL;
4031 if (h == NULL && !htab->is_vxworks)
4032 {
4033 Elf_Internal_Sym *isym = bfd_sym_from_r_symndx (&htab->sym_cache,
4034 abfd, r_symndx);
4035 if (isym == NULL)
4036 return FALSE;
4037
4038 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
4039 {
4040 /* Set PLT_IFUNC flag for this sym, no GOT entry yet. */
4041 ifunc = update_local_sym_info (abfd, symtab_hdr, r_symndx,
4042 PLT_IFUNC);
4043 if (ifunc == NULL)
4044 return FALSE;
4045
4046 /* STT_GNU_IFUNC symbols must have a PLT entry;
4047 In a non-pie executable even when there are
4048 no plt calls. */
4049 if (!bfd_link_pic (info)
4050 || is_branch_reloc (r_type))
4051 {
4052 bfd_vma addend = 0;
4053 if (r_type == R_PPC_PLTREL24)
4054 {
4055 ppc_elf_tdata (abfd)->makes_plt_call = 1;
4056 if (bfd_link_pic (info))
4057 addend = rel->r_addend;
4058 }
4059 if (!update_plt_info (abfd, ifunc, got2, addend))
4060 return FALSE;
4061 }
4062 }
4063 }
4064
4065 if (!htab->is_vxworks
4066 && is_branch_reloc (r_type)
4067 && h != NULL
4068 && h == tga)
4069 {
4070 if (rel != relocs
4071 && (ELF32_R_TYPE (rel[-1].r_info) == R_PPC_TLSGD
4072 || ELF32_R_TYPE (rel[-1].r_info) == R_PPC_TLSLD))
4073 /* We have a new-style __tls_get_addr call with a marker
4074 reloc. */
4075 ;
4076 else
4077 /* Mark this section as having an old-style call. */
4078 sec->has_tls_get_addr_call = 1;
4079 }
4080
4081 switch (r_type)
4082 {
4083 case R_PPC_TLSGD:
4084 case R_PPC_TLSLD:
4085 /* These special tls relocs tie a call to __tls_get_addr with
4086 its parameter symbol. */
4087 break;
4088
4089 case R_PPC_GOT_TLSLD16:
4090 case R_PPC_GOT_TLSLD16_LO:
4091 case R_PPC_GOT_TLSLD16_HI:
4092 case R_PPC_GOT_TLSLD16_HA:
4093 tls_type = TLS_TLS | TLS_LD;
4094 goto dogottls;
4095
4096 case R_PPC_GOT_TLSGD16:
4097 case R_PPC_GOT_TLSGD16_LO:
4098 case R_PPC_GOT_TLSGD16_HI:
4099 case R_PPC_GOT_TLSGD16_HA:
4100 tls_type = TLS_TLS | TLS_GD;
4101 goto dogottls;
4102
4103 case R_PPC_GOT_TPREL16:
4104 case R_PPC_GOT_TPREL16_LO:
4105 case R_PPC_GOT_TPREL16_HI:
4106 case R_PPC_GOT_TPREL16_HA:
4107 if (bfd_link_dll (info))
4108 info->flags |= DF_STATIC_TLS;
4109 tls_type = TLS_TLS | TLS_TPREL;
4110 goto dogottls;
4111
4112 case R_PPC_GOT_DTPREL16:
4113 case R_PPC_GOT_DTPREL16_LO:
4114 case R_PPC_GOT_DTPREL16_HI:
4115 case R_PPC_GOT_DTPREL16_HA:
4116 tls_type = TLS_TLS | TLS_DTPREL;
4117 dogottls:
4118 sec->has_tls_reloc = 1;
4119 /* Fall through. */
4120
4121 /* GOT16 relocations */
4122 case R_PPC_GOT16:
4123 case R_PPC_GOT16_LO:
4124 case R_PPC_GOT16_HI:
4125 case R_PPC_GOT16_HA:
4126 /* This symbol requires a global offset table entry. */
4127 if (htab->elf.sgot == NULL)
4128 {
4129 if (htab->elf.dynobj == NULL)
4130 htab->elf.dynobj = abfd;
4131 if (!ppc_elf_create_got (htab->elf.dynobj, info))
4132 return FALSE;
4133 }
4134 if (h != NULL)
4135 {
4136 h->got.refcount += 1;
4137 ppc_elf_hash_entry (h)->tls_mask |= tls_type;
4138 }
4139 else
4140 /* This is a global offset table entry for a local symbol. */
4141 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, tls_type))
4142 return FALSE;
4143
4144 /* We may also need a plt entry if the symbol turns out to be
4145 an ifunc. */
4146 if (h != NULL && !bfd_link_pic (info))
4147 {
4148 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
4149 return FALSE;
4150 }
4151 break;
4152
4153 /* Indirect .sdata relocation. */
4154 case R_PPC_EMB_SDAI16:
4155 if (bfd_link_pic (info))
4156 {
4157 bad_shared_reloc (abfd, r_type);
4158 return FALSE;
4159 }
4160 htab->sdata[0].sym->ref_regular = 1;
4161 if (!elf_allocate_pointer_linker_section (abfd, &htab->sdata[0],
4162 h, rel))
4163 return FALSE;
4164 if (h != NULL)
4165 {
4166 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4167 h->non_got_ref = TRUE;
4168 }
4169 break;
4170
4171 /* Indirect .sdata2 relocation. */
4172 case R_PPC_EMB_SDA2I16:
4173 if (bfd_link_pic (info))
4174 {
4175 bad_shared_reloc (abfd, r_type);
4176 return FALSE;
4177 }
4178 htab->sdata[1].sym->ref_regular = 1;
4179 if (!elf_allocate_pointer_linker_section (abfd, &htab->sdata[1],
4180 h, rel))
4181 return FALSE;
4182 if (h != NULL)
4183 {
4184 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4185 h->non_got_ref = TRUE;
4186 }
4187 break;
4188
4189 case R_PPC_SDAREL16:
4190 htab->sdata[0].sym->ref_regular = 1;
4191 /* Fall through. */
4192
4193 case R_PPC_VLE_SDAREL_LO16A:
4194 case R_PPC_VLE_SDAREL_LO16D:
4195 case R_PPC_VLE_SDAREL_HI16A:
4196 case R_PPC_VLE_SDAREL_HI16D:
4197 case R_PPC_VLE_SDAREL_HA16A:
4198 case R_PPC_VLE_SDAREL_HA16D:
4199 if (h != NULL)
4200 {
4201 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4202 h->non_got_ref = TRUE;
4203 }
4204 break;
4205
4206 case R_PPC_VLE_REL8:
4207 case R_PPC_VLE_REL15:
4208 case R_PPC_VLE_REL24:
4209 case R_PPC_VLE_LO16A:
4210 case R_PPC_VLE_LO16D:
4211 case R_PPC_VLE_HI16A:
4212 case R_PPC_VLE_HI16D:
4213 case R_PPC_VLE_HA16A:
4214 case R_PPC_VLE_HA16D:
4215 case R_PPC_VLE_ADDR20:
4216 break;
4217
4218 case R_PPC_EMB_SDA2REL:
4219 if (bfd_link_pic (info))
4220 {
4221 bad_shared_reloc (abfd, r_type);
4222 return FALSE;
4223 }
4224 htab->sdata[1].sym->ref_regular = 1;
4225 if (h != NULL)
4226 {
4227 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4228 h->non_got_ref = TRUE;
4229 }
4230 break;
4231
4232 case R_PPC_VLE_SDA21_LO:
4233 case R_PPC_VLE_SDA21:
4234 case R_PPC_EMB_SDA21:
4235 case R_PPC_EMB_RELSDA:
4236 if (bfd_link_pic (info))
4237 {
4238 bad_shared_reloc (abfd, r_type);
4239 return FALSE;
4240 }
4241 if (h != NULL)
4242 {
4243 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4244 h->non_got_ref = TRUE;
4245 }
4246 break;
4247
4248 case R_PPC_EMB_NADDR32:
4249 case R_PPC_EMB_NADDR16:
4250 case R_PPC_EMB_NADDR16_LO:
4251 case R_PPC_EMB_NADDR16_HI:
4252 case R_PPC_EMB_NADDR16_HA:
4253 if (bfd_link_pic (info))
4254 {
4255 bad_shared_reloc (abfd, r_type);
4256 return FALSE;
4257 }
4258 if (h != NULL)
4259 h->non_got_ref = TRUE;
4260 break;
4261
4262 case R_PPC_PLTREL24:
4263 if (h == NULL)
4264 break;
4265 /* Fall through */
4266 case R_PPC_PLT32:
4267 case R_PPC_PLTREL32:
4268 case R_PPC_PLT16_LO:
4269 case R_PPC_PLT16_HI:
4270 case R_PPC_PLT16_HA:
4271 #ifdef DEBUG
4272 fprintf (stderr, "Reloc requires a PLT entry\n");
4273 #endif
4274 /* This symbol requires a procedure linkage table entry. */
4275 if (h == NULL)
4276 {
4277 if (ifunc == NULL)
4278 {
4279 /* It does not make sense to have a procedure linkage
4280 table entry for a non-ifunc local symbol. */
4281 info->callbacks->einfo
4282 /* xgettext:c-format */
4283 (_("%H: %s reloc against local symbol\n"),
4284 abfd, sec, rel->r_offset,
4285 ppc_elf_howto_table[r_type]->name);
4286 bfd_set_error (bfd_error_bad_value);
4287 return FALSE;
4288 }
4289 }
4290 else
4291 {
4292 bfd_vma addend = 0;
4293
4294 if (r_type == R_PPC_PLTREL24)
4295 {
4296 ppc_elf_tdata (abfd)->makes_plt_call = 1;
4297 if (bfd_link_pic (info))
4298 addend = rel->r_addend;
4299 }
4300 h->needs_plt = 1;
4301 if (!update_plt_info (abfd, &h->plt.plist, got2, addend))
4302 return FALSE;
4303 }
4304 break;
4305
4306 /* The following relocations don't need to propagate the
4307 relocation if linking a shared object since they are
4308 section relative. */
4309 case R_PPC_SECTOFF:
4310 case R_PPC_SECTOFF_LO:
4311 case R_PPC_SECTOFF_HI:
4312 case R_PPC_SECTOFF_HA:
4313 case R_PPC_DTPREL16:
4314 case R_PPC_DTPREL16_LO:
4315 case R_PPC_DTPREL16_HI:
4316 case R_PPC_DTPREL16_HA:
4317 case R_PPC_TOC16:
4318 break;
4319
4320 case R_PPC_REL16:
4321 case R_PPC_REL16_LO:
4322 case R_PPC_REL16_HI:
4323 case R_PPC_REL16_HA:
4324 case R_PPC_REL16DX_HA:
4325 ppc_elf_tdata (abfd)->has_rel16 = 1;
4326 break;
4327
4328 /* These are just markers. */
4329 case R_PPC_TLS:
4330 case R_PPC_EMB_MRKREF:
4331 case R_PPC_NONE:
4332 case R_PPC_max:
4333 case R_PPC_RELAX:
4334 case R_PPC_RELAX_PLT:
4335 case R_PPC_RELAX_PLTREL24:
4336 case R_PPC_16DX_HA:
4337 break;
4338
4339 /* These should only appear in dynamic objects. */
4340 case R_PPC_COPY:
4341 case R_PPC_GLOB_DAT:
4342 case R_PPC_JMP_SLOT:
4343 case R_PPC_RELATIVE:
4344 case R_PPC_IRELATIVE:
4345 break;
4346
4347 /* These aren't handled yet. We'll report an error later. */
4348 case R_PPC_ADDR30:
4349 case R_PPC_EMB_RELSEC16:
4350 case R_PPC_EMB_RELST_LO:
4351 case R_PPC_EMB_RELST_HI:
4352 case R_PPC_EMB_RELST_HA:
4353 case R_PPC_EMB_BIT_FLD:
4354 break;
4355
4356 /* This refers only to functions defined in the shared library. */
4357 case R_PPC_LOCAL24PC:
4358 if (h != NULL && h == htab->elf.hgot && htab->plt_type == PLT_UNSET)
4359 {
4360 htab->plt_type = PLT_OLD;
4361 htab->old_bfd = abfd;
4362 }
4363 if (h != NULL && h->type == STT_GNU_IFUNC)
4364 {
4365 h->needs_plt = 1;
4366 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
4367 return FALSE;
4368 }
4369 break;
4370
4371 /* This relocation describes the C++ object vtable hierarchy.
4372 Reconstruct it for later use during GC. */
4373 case R_PPC_GNU_VTINHERIT:
4374 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
4375 return FALSE;
4376 break;
4377
4378 /* This relocation describes which C++ vtable entries are actually
4379 used. Record for later use during GC. */
4380 case R_PPC_GNU_VTENTRY:
4381 BFD_ASSERT (h != NULL);
4382 if (h != NULL
4383 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
4384 return FALSE;
4385 break;
4386
4387 /* We shouldn't really be seeing TPREL32. */
4388 case R_PPC_TPREL32:
4389 case R_PPC_TPREL16:
4390 case R_PPC_TPREL16_LO:
4391 case R_PPC_TPREL16_HI:
4392 case R_PPC_TPREL16_HA:
4393 if (bfd_link_dll (info))
4394 info->flags |= DF_STATIC_TLS;
4395 goto dodyn;
4396
4397 /* Nor these. */
4398 case R_PPC_DTPMOD32:
4399 case R_PPC_DTPREL32:
4400 goto dodyn;
4401
4402 case R_PPC_REL32:
4403 if (h == NULL
4404 && got2 != NULL
4405 && (sec->flags & SEC_CODE) != 0
4406 && bfd_link_pic (info)
4407 && htab->plt_type == PLT_UNSET)
4408 {
4409 /* Old -fPIC gcc code has .long LCTOC1-LCFx just before
4410 the start of a function, which assembles to a REL32
4411 reference to .got2. If we detect one of these, then
4412 force the old PLT layout because the linker cannot
4413 reliably deduce the GOT pointer value needed for
4414 PLT call stubs. */
4415 asection *s;
4416 Elf_Internal_Sym *isym;
4417
4418 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
4419 abfd, r_symndx);
4420 if (isym == NULL)
4421 return FALSE;
4422
4423 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
4424 if (s == got2)
4425 {
4426 htab->plt_type = PLT_OLD;
4427 htab->old_bfd = abfd;
4428 }
4429 }
4430 if (h == NULL || h == htab->elf.hgot)
4431 break;
4432 /* fall through */
4433
4434 case R_PPC_ADDR32:
4435 case R_PPC_ADDR16:
4436 case R_PPC_ADDR16_LO:
4437 case R_PPC_ADDR16_HI:
4438 case R_PPC_ADDR16_HA:
4439 case R_PPC_UADDR32:
4440 case R_PPC_UADDR16:
4441 if (h != NULL && !bfd_link_pic (info))
4442 {
4443 /* We may need a plt entry if the symbol turns out to be
4444 a function defined in a dynamic object. */
4445 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
4446 return FALSE;
4447
4448 /* We may need a copy reloc too. */
4449 h->non_got_ref = 1;
4450 h->pointer_equality_needed = 1;
4451 if (r_type == R_PPC_ADDR16_HA)
4452 ppc_elf_hash_entry (h)->has_addr16_ha = 1;
4453 if (r_type == R_PPC_ADDR16_LO)
4454 ppc_elf_hash_entry (h)->has_addr16_lo = 1;
4455 }
4456 goto dodyn;
4457
4458 case R_PPC_REL24:
4459 case R_PPC_REL14:
4460 case R_PPC_REL14_BRTAKEN:
4461 case R_PPC_REL14_BRNTAKEN:
4462 if (h == NULL)
4463 break;
4464 if (h == htab->elf.hgot)
4465 {
4466 if (htab->plt_type == PLT_UNSET)
4467 {
4468 htab->plt_type = PLT_OLD;
4469 htab->old_bfd = abfd;
4470 }
4471 break;
4472 }
4473 /* fall through */
4474
4475 case R_PPC_ADDR24:
4476 case R_PPC_ADDR14:
4477 case R_PPC_ADDR14_BRTAKEN:
4478 case R_PPC_ADDR14_BRNTAKEN:
4479 if (h != NULL && !bfd_link_pic (info))
4480 {
4481 /* We may need a plt entry if the symbol turns out to be
4482 a function defined in a dynamic object. */
4483 h->needs_plt = 1;
4484 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
4485 return FALSE;
4486 break;
4487 }
4488
4489 dodyn:
4490 /* If we are creating a shared library, and this is a reloc
4491 against a global symbol, or a non PC relative reloc
4492 against a local symbol, then we need to copy the reloc
4493 into the shared library. However, if we are linking with
4494 -Bsymbolic, we do not need to copy a reloc against a
4495 global symbol which is defined in an object we are
4496 including in the link (i.e., DEF_REGULAR is set). At
4497 this point we have not seen all the input files, so it is
4498 possible that DEF_REGULAR is not set now but will be set
4499 later (it is never cleared). In case of a weak definition,
4500 DEF_REGULAR may be cleared later by a strong definition in
4501 a shared library. We account for that possibility below by
4502 storing information in the dyn_relocs field of the hash
4503 table entry. A similar situation occurs when creating
4504 shared libraries and symbol visibility changes render the
4505 symbol local.
4506
4507 If on the other hand, we are creating an executable, we
4508 may need to keep relocations for symbols satisfied by a
4509 dynamic library if we manage to avoid copy relocs for the
4510 symbol. */
4511 if ((bfd_link_pic (info)
4512 && (must_be_dyn_reloc (info, r_type)
4513 || (h != NULL
4514 && (!SYMBOLIC_BIND (info, h)
4515 || h->root.type == bfd_link_hash_defweak
4516 || !h->def_regular))))
4517 || (ELIMINATE_COPY_RELOCS
4518 && !bfd_link_pic (info)
4519 && h != NULL
4520 && (h->root.type == bfd_link_hash_defweak
4521 || !h->def_regular)))
4522 {
4523 #ifdef DEBUG
4524 fprintf (stderr,
4525 "ppc_elf_check_relocs needs to "
4526 "create relocation for %s\n",
4527 (h && h->root.root.string
4528 ? h->root.root.string : "<unknown>"));
4529 #endif
4530 if (sreloc == NULL)
4531 {
4532 if (htab->elf.dynobj == NULL)
4533 htab->elf.dynobj = abfd;
4534
4535 sreloc = _bfd_elf_make_dynamic_reloc_section
4536 (sec, htab->elf.dynobj, 2, abfd, /*rela?*/ TRUE);
4537
4538 if (sreloc == NULL)
4539 return FALSE;
4540 }
4541
4542 /* If this is a global symbol, we count the number of
4543 relocations we need for this symbol. */
4544 if (h != NULL)
4545 {
4546 struct elf_dyn_relocs *p;
4547 struct elf_dyn_relocs **rel_head;
4548
4549 rel_head = &ppc_elf_hash_entry (h)->dyn_relocs;
4550 p = *rel_head;
4551 if (p == NULL || p->sec != sec)
4552 {
4553 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
4554 if (p == NULL)
4555 return FALSE;
4556 p->next = *rel_head;
4557 *rel_head = p;
4558 p->sec = sec;
4559 p->count = 0;
4560 p->pc_count = 0;
4561 }
4562 p->count += 1;
4563 if (!must_be_dyn_reloc (info, r_type))
4564 p->pc_count += 1;
4565 }
4566 else
4567 {
4568 /* Track dynamic relocs needed for local syms too.
4569 We really need local syms available to do this
4570 easily. Oh well. */
4571 struct ppc_dyn_relocs *p;
4572 struct ppc_dyn_relocs **rel_head;
4573 bfd_boolean is_ifunc;
4574 asection *s;
4575 void *vpp;
4576 Elf_Internal_Sym *isym;
4577
4578 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
4579 abfd, r_symndx);
4580 if (isym == NULL)
4581 return FALSE;
4582
4583 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
4584 if (s == NULL)
4585 s = sec;
4586
4587 vpp = &elf_section_data (s)->local_dynrel;
4588 rel_head = (struct ppc_dyn_relocs **) vpp;
4589 is_ifunc = ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC;
4590 p = *rel_head;
4591 if (p != NULL && p->sec == sec && p->ifunc != is_ifunc)
4592 p = p->next;
4593 if (p == NULL || p->sec != sec || p->ifunc != is_ifunc)
4594 {
4595 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
4596 if (p == NULL)
4597 return FALSE;
4598 p->next = *rel_head;
4599 *rel_head = p;
4600 p->sec = sec;
4601 p->ifunc = is_ifunc;
4602 p->count = 0;
4603 }
4604 p->count += 1;
4605 }
4606 }
4607
4608 break;
4609 }
4610 }
4611
4612 return TRUE;
4613 }
4614 \f
4615 /* Warn for conflicting Tag_GNU_Power_ABI_FP attributes between IBFD
4616 and OBFD, and merge non-conflicting ones. */
4617 void
4618 _bfd_elf_ppc_merge_fp_attributes (bfd *ibfd, struct bfd_link_info *info)
4619 {
4620 bfd *obfd = info->output_bfd;
4621 obj_attribute *in_attr, *in_attrs;
4622 obj_attribute *out_attr, *out_attrs;
4623
4624 in_attrs = elf_known_obj_attributes (ibfd)[OBJ_ATTR_GNU];
4625 out_attrs = elf_known_obj_attributes (obfd)[OBJ_ATTR_GNU];
4626
4627 in_attr = &in_attrs[Tag_GNU_Power_ABI_FP];
4628 out_attr = &out_attrs[Tag_GNU_Power_ABI_FP];
4629
4630 if (in_attr->i != out_attr->i)
4631 {
4632 int in_fp = in_attr->i & 3;
4633 int out_fp = out_attr->i & 3;
4634
4635 if (in_fp == 0)
4636 ;
4637 else if (out_fp == 0)
4638 {
4639 out_attr->type = 1;
4640 out_attr->i ^= in_fp;
4641 }
4642 else if (out_fp != 2 && in_fp == 2)
4643 _bfd_error_handler
4644 /* xgettext:c-format */
4645 (_("Warning: %B uses hard float, %B uses soft float"), obfd, ibfd);
4646 else if (out_fp == 2 && in_fp != 2)
4647 _bfd_error_handler
4648 /* xgettext:c-format */
4649 (_("Warning: %B uses hard float, %B uses soft float"), ibfd, obfd);
4650 else if (out_fp == 1 && in_fp == 3)
4651 _bfd_error_handler
4652 /* xgettext:c-format */
4653 (_("Warning: %B uses double-precision hard float, "
4654 "%B uses single-precision hard float"), obfd, ibfd);
4655 else if (out_fp == 3 && in_fp == 1)
4656 _bfd_error_handler
4657 /* xgettext:c-format */
4658 (_("Warning: %B uses double-precision hard float, "
4659 "%B uses single-precision hard float"), ibfd, obfd);
4660
4661 in_fp = in_attr->i & 0xc;
4662 out_fp = out_attr->i & 0xc;
4663 if (in_fp == 0)
4664 ;
4665 else if (out_fp == 0)
4666 {
4667 out_attr->type = 1;
4668 out_attr->i ^= in_fp;
4669 }
4670 else if (out_fp != 2 * 4 && in_fp == 2 * 4)
4671 _bfd_error_handler
4672 /* xgettext:c-format */
4673 (_("Warning: %B uses 64-bit long double, "
4674 "%B uses 128-bit long double"), ibfd, obfd);
4675 else if (in_fp != 2 * 4 && out_fp == 2 * 4)
4676 _bfd_error_handler
4677 /* xgettext:c-format */
4678 (_("Warning: %B uses 64-bit long double, "
4679 "%B uses 128-bit long double"), obfd, ibfd);
4680 else if (out_fp == 1 * 4 && in_fp == 3 * 4)
4681 _bfd_error_handler
4682 /* xgettext:c-format */
4683 (_("Warning: %B uses IBM long double, "
4684 "%B uses IEEE long double"), ibfd, obfd);
4685 else if (out_fp == 3 * 4 && in_fp == 1 * 4)
4686 _bfd_error_handler
4687 /* xgettext:c-format */
4688 (_("Warning: %B uses IBM long double, "
4689 "%B uses IEEE long double"), obfd, ibfd);
4690 }
4691 }
4692
4693 /* Merge object attributes from IBFD into OBFD. Warn if
4694 there are conflicting attributes. */
4695 static bfd_boolean
4696 ppc_elf_merge_obj_attributes (bfd *ibfd, struct bfd_link_info *info)
4697 {
4698 bfd *obfd;
4699 obj_attribute *in_attr, *in_attrs;
4700 obj_attribute *out_attr, *out_attrs;
4701
4702 _bfd_elf_ppc_merge_fp_attributes (ibfd, info);
4703
4704 obfd = info->output_bfd;
4705 in_attrs = elf_known_obj_attributes (ibfd)[OBJ_ATTR_GNU];
4706 out_attrs = elf_known_obj_attributes (obfd)[OBJ_ATTR_GNU];
4707
4708 /* Check for conflicting Tag_GNU_Power_ABI_Vector attributes and
4709 merge non-conflicting ones. */
4710 in_attr = &in_attrs[Tag_GNU_Power_ABI_Vector];
4711 out_attr = &out_attrs[Tag_GNU_Power_ABI_Vector];
4712 if (in_attr->i != out_attr->i)
4713 {
4714 int in_vec = in_attr->i & 3;
4715 int out_vec = out_attr->i & 3;
4716
4717 if (in_vec == 0)
4718 ;
4719 else if (out_vec == 0)
4720 {
4721 out_attr->type = 1;
4722 out_attr->i = in_vec;
4723 }
4724 /* For now, allow generic to transition to AltiVec or SPE
4725 without a warning. If GCC marked files with their stack
4726 alignment and used don't-care markings for files which are
4727 not affected by the vector ABI, we could warn about this
4728 case too. */
4729 else if (in_vec == 1)
4730 ;
4731 else if (out_vec == 1)
4732 {
4733 out_attr->type = 1;
4734 out_attr->i = in_vec;
4735 }
4736 else if (out_vec < in_vec)
4737 _bfd_error_handler
4738 /* xgettext:c-format */
4739 (_("Warning: %B uses AltiVec vector ABI, %B uses SPE vector ABI"),
4740 obfd, ibfd);
4741 else if (out_vec > in_vec)
4742 _bfd_error_handler
4743 /* xgettext:c-format */
4744 (_("Warning: %B uses AltiVec vector ABI, %B uses SPE vector ABI"),
4745 ibfd, obfd);
4746 }
4747
4748 /* Check for conflicting Tag_GNU_Power_ABI_Struct_Return attributes
4749 and merge non-conflicting ones. */
4750 in_attr = &in_attrs[Tag_GNU_Power_ABI_Struct_Return];
4751 out_attr = &out_attrs[Tag_GNU_Power_ABI_Struct_Return];
4752 if (in_attr->i != out_attr->i)
4753 {
4754 int in_struct = in_attr->i & 3;
4755 int out_struct = out_attr->i & 3;
4756
4757 if (in_struct == 0 || in_struct == 3)
4758 ;
4759 else if (out_struct == 0)
4760 {
4761 out_attr->type = 1;
4762 out_attr->i = in_struct;
4763 }
4764 else if (out_struct < in_struct)
4765 _bfd_error_handler
4766 /* xgettext:c-format */
4767 (_("Warning: %B uses r3/r4 for small structure returns, "
4768 "%B uses memory"), obfd, ibfd);
4769 else if (out_struct > in_struct)
4770 _bfd_error_handler
4771 /* xgettext:c-format */
4772 (_("Warning: %B uses r3/r4 for small structure returns, "
4773 "%B uses memory"), ibfd, obfd);
4774 }
4775
4776 /* Merge Tag_compatibility attributes and any common GNU ones. */
4777 _bfd_elf_merge_object_attributes (ibfd, info);
4778
4779 return TRUE;
4780 }
4781
4782 /* Merge backend specific data from an object file to the output
4783 object file when linking. */
4784
4785 static bfd_boolean
4786 ppc_elf_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info)
4787 {
4788 bfd *obfd = info->output_bfd;
4789 flagword old_flags;
4790 flagword new_flags;
4791 bfd_boolean error;
4792
4793 if (!is_ppc_elf (ibfd) || !is_ppc_elf (obfd))
4794 return TRUE;
4795
4796 /* Check if we have the same endianness. */
4797 if (! _bfd_generic_verify_endian_match (ibfd, info))
4798 return FALSE;
4799
4800 if (!ppc_elf_merge_obj_attributes (ibfd, info))
4801 return FALSE;
4802
4803 new_flags = elf_elfheader (ibfd)->e_flags;
4804 old_flags = elf_elfheader (obfd)->e_flags;
4805 if (!elf_flags_init (obfd))
4806 {
4807 /* First call, no flags set. */
4808 elf_flags_init (obfd) = TRUE;
4809 elf_elfheader (obfd)->e_flags = new_flags;
4810 }
4811
4812 /* Compatible flags are ok. */
4813 else if (new_flags == old_flags)
4814 ;
4815
4816 /* Incompatible flags. */
4817 else
4818 {
4819 /* Warn about -mrelocatable mismatch. Allow -mrelocatable-lib
4820 to be linked with either. */
4821 error = FALSE;
4822 if ((new_flags & EF_PPC_RELOCATABLE) != 0
4823 && (old_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0)
4824 {
4825 error = TRUE;
4826 _bfd_error_handler
4827 (_("%B: compiled with -mrelocatable and linked with "
4828 "modules compiled normally"), ibfd);
4829 }
4830 else if ((new_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0
4831 && (old_flags & EF_PPC_RELOCATABLE) != 0)
4832 {
4833 error = TRUE;
4834 _bfd_error_handler
4835 (_("%B: compiled normally and linked with "
4836 "modules compiled with -mrelocatable"), ibfd);
4837 }
4838
4839 /* The output is -mrelocatable-lib iff both the input files are. */
4840 if (! (new_flags & EF_PPC_RELOCATABLE_LIB))
4841 elf_elfheader (obfd)->e_flags &= ~EF_PPC_RELOCATABLE_LIB;
4842
4843 /* The output is -mrelocatable iff it can't be -mrelocatable-lib,
4844 but each input file is either -mrelocatable or -mrelocatable-lib. */
4845 if (! (elf_elfheader (obfd)->e_flags & EF_PPC_RELOCATABLE_LIB)
4846 && (new_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE))
4847 && (old_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE)))
4848 elf_elfheader (obfd)->e_flags |= EF_PPC_RELOCATABLE;
4849
4850 /* Do not warn about eabi vs. V.4 mismatch, just or in the bit if
4851 any module uses it. */
4852 elf_elfheader (obfd)->e_flags |= (new_flags & EF_PPC_EMB);
4853
4854 new_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
4855 old_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
4856
4857 /* Warn about any other mismatches. */
4858 if (new_flags != old_flags)
4859 {
4860 error = TRUE;
4861 _bfd_error_handler
4862 /* xgettext:c-format */
4863 (_("%B: uses different e_flags (%#x) fields "
4864 "than previous modules (%#x)"),
4865 ibfd, new_flags, old_flags);
4866 }
4867
4868 if (error)
4869 {
4870 bfd_set_error (bfd_error_bad_value);
4871 return FALSE;
4872 }
4873 }
4874
4875 return TRUE;
4876 }
4877
4878 static void
4879 ppc_elf_vle_split16 (bfd *input_bfd,
4880 asection *input_section,
4881 unsigned long offset,
4882 bfd_byte *loc,
4883 bfd_vma value,
4884 split16_format_type split16_format,
4885 bfd_boolean fixup)
4886 {
4887 unsigned int insn, opcode, top5;
4888
4889 insn = bfd_get_32 (input_bfd, loc);
4890 opcode = insn & 0xfc00f800;
4891 if (opcode == E_OR2I_INSN
4892 || opcode == E_AND2I_DOT_INSN
4893 || opcode == E_OR2IS_INSN
4894 || opcode == E_LIS_INSN
4895 || opcode == E_AND2IS_DOT_INSN)
4896 {
4897 if (split16_format != split16a_type)
4898 {
4899 if (fixup)
4900 split16_format = split16a_type;
4901 else
4902 _bfd_error_handler
4903 /* xgettext:c-format */
4904 (_("%B(%A+0x%lx): expected 16A style relocation on 0x%08x insn"),
4905 input_bfd, input_section, offset, opcode);
4906 }
4907 }
4908 else if (opcode == E_ADD2I_DOT_INSN
4909 || opcode == E_ADD2IS_INSN
4910 || opcode == E_CMP16I_INSN
4911 || opcode == E_MULL2I_INSN
4912 || opcode == E_CMPL16I_INSN
4913 || opcode == E_CMPH16I_INSN
4914 || opcode == E_CMPHL16I_INSN)
4915 {
4916 if (split16_format != split16d_type)
4917 {
4918 if (fixup)
4919 split16_format = split16d_type;
4920 else
4921 _bfd_error_handler
4922 /* xgettext:c-format */
4923 (_("%B(%A+0x%lx): expected 16D style relocation on 0x%08x insn"),
4924 input_bfd, input_section, offset, opcode);
4925 }
4926 }
4927 top5 = value & 0xf800;
4928 top5 = top5 << (split16_format == split16a_type ? 5 : 10);
4929 insn &= (split16_format == split16a_type ? ~0x1f07ff : ~0x3e007ff);
4930 insn |= top5;
4931 insn |= value & 0x7ff;
4932 bfd_put_32 (input_bfd, insn, loc);
4933 }
4934
4935 static void
4936 ppc_elf_vle_split20 (bfd *output_bfd, bfd_byte *loc, bfd_vma value)
4937 {
4938 unsigned int insn;
4939
4940 insn = bfd_get_32 (output_bfd, loc);
4941 /* We have an li20 field, bits 17..20, 11..15, 21..31. */
4942 /* Top 4 bits of value to 17..20. */
4943 insn |= (value & 0xf0000) >> 5;
4944 /* Next 5 bits of the value to 11..15. */
4945 insn |= (value & 0xf800) << 5;
4946 /* And the final 11 bits of the value to bits 21 to 31. */
4947 insn |= value & 0x7ff;
4948 bfd_put_32 (output_bfd, insn, loc);
4949 }
4950
4951 \f
4952 /* Choose which PLT scheme to use, and set .plt flags appropriately.
4953 Returns -1 on error, 0 for old PLT, 1 for new PLT. */
4954 int
4955 ppc_elf_select_plt_layout (bfd *output_bfd ATTRIBUTE_UNUSED,
4956 struct bfd_link_info *info)
4957 {
4958 struct ppc_elf_link_hash_table *htab;
4959 flagword flags;
4960
4961 htab = ppc_elf_hash_table (info);
4962
4963 if (htab->plt_type == PLT_UNSET)
4964 {
4965 struct elf_link_hash_entry *h;
4966
4967 if (htab->params->plt_style == PLT_OLD)
4968 htab->plt_type = PLT_OLD;
4969 else if (bfd_link_pic (info)
4970 && htab->elf.dynamic_sections_created
4971 && (h = elf_link_hash_lookup (&htab->elf, "_mcount",
4972 FALSE, FALSE, TRUE)) != NULL
4973 && (h->type == STT_FUNC
4974 || h->needs_plt)
4975 && h->ref_regular
4976 && !(SYMBOL_CALLS_LOCAL (info, h)
4977 || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)))
4978 {
4979 /* Profiling of shared libs (and pies) is not supported with
4980 secure plt, because ppc32 does profiling before a
4981 function prologue and a secure plt pic call stubs needs
4982 r30 to be set up. */
4983 htab->plt_type = PLT_OLD;
4984 }
4985 else
4986 {
4987 bfd *ibfd;
4988 enum ppc_elf_plt_type plt_type = htab->params->plt_style;
4989
4990 /* Look through the reloc flags left by ppc_elf_check_relocs.
4991 Use the old style bss plt if a file makes plt calls
4992 without using the new relocs, and if ld isn't given
4993 --secure-plt and we never see REL16 relocs. */
4994 if (plt_type == PLT_UNSET)
4995 plt_type = PLT_OLD;
4996 for (ibfd = info->input_bfds; ibfd; ibfd = ibfd->link.next)
4997 if (is_ppc_elf (ibfd))
4998 {
4999 if (ppc_elf_tdata (ibfd)->has_rel16)
5000 plt_type = PLT_NEW;
5001 else if (ppc_elf_tdata (ibfd)->makes_plt_call)
5002 {
5003 plt_type = PLT_OLD;
5004 htab->old_bfd = ibfd;
5005 break;
5006 }
5007 }
5008 htab->plt_type = plt_type;
5009 }
5010 }
5011 if (htab->plt_type == PLT_OLD && htab->params->plt_style == PLT_NEW)
5012 {
5013 if (htab->old_bfd != NULL)
5014 info->callbacks->einfo (_("%P: bss-plt forced due to %B\n"),
5015 htab->old_bfd);
5016 else
5017 info->callbacks->einfo (_("%P: bss-plt forced by profiling\n"));
5018 }
5019
5020 BFD_ASSERT (htab->plt_type != PLT_VXWORKS);
5021
5022 if (htab->plt_type == PLT_NEW)
5023 {
5024 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
5025 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
5026
5027 /* The new PLT is a loaded section. */
5028 if (htab->elf.splt != NULL
5029 && !bfd_set_section_flags (htab->elf.dynobj, htab->elf.splt, flags))
5030 return -1;
5031
5032 /* The new GOT is not executable. */
5033 if (htab->elf.sgot != NULL
5034 && !bfd_set_section_flags (htab->elf.dynobj, htab->elf.sgot, flags))
5035 return -1;
5036 }
5037 else
5038 {
5039 /* Stop an unused .glink section from affecting .text alignment. */
5040 if (htab->glink != NULL
5041 && !bfd_set_section_alignment (htab->elf.dynobj, htab->glink, 0))
5042 return -1;
5043 }
5044 return htab->plt_type == PLT_NEW;
5045 }
5046 \f
5047 /* Return the section that should be marked against GC for a given
5048 relocation. */
5049
5050 static asection *
5051 ppc_elf_gc_mark_hook (asection *sec,
5052 struct bfd_link_info *info,
5053 Elf_Internal_Rela *rel,
5054 struct elf_link_hash_entry *h,
5055 Elf_Internal_Sym *sym)
5056 {
5057 if (h != NULL)
5058 switch (ELF32_R_TYPE (rel->r_info))
5059 {
5060 case R_PPC_GNU_VTINHERIT:
5061 case R_PPC_GNU_VTENTRY:
5062 return NULL;
5063 }
5064
5065 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
5066 }
5067 \f
5068 /* Set plt output section type, htab->tls_get_addr, and call the
5069 generic ELF tls_setup function. */
5070
5071 asection *
5072 ppc_elf_tls_setup (bfd *obfd, struct bfd_link_info *info)
5073 {
5074 struct ppc_elf_link_hash_table *htab;
5075
5076 htab = ppc_elf_hash_table (info);
5077 htab->tls_get_addr = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
5078 FALSE, FALSE, TRUE);
5079 if (htab->plt_type != PLT_NEW)
5080 htab->params->no_tls_get_addr_opt = TRUE;
5081
5082 if (!htab->params->no_tls_get_addr_opt)
5083 {
5084 struct elf_link_hash_entry *opt, *tga;
5085 opt = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_opt",
5086 FALSE, FALSE, TRUE);
5087 if (opt != NULL
5088 && (opt->root.type == bfd_link_hash_defined
5089 || opt->root.type == bfd_link_hash_defweak))
5090 {
5091 /* If glibc supports an optimized __tls_get_addr call stub,
5092 signalled by the presence of __tls_get_addr_opt, and we'll
5093 be calling __tls_get_addr via a plt call stub, then
5094 make __tls_get_addr point to __tls_get_addr_opt. */
5095 tga = htab->tls_get_addr;
5096 if (htab->elf.dynamic_sections_created
5097 && tga != NULL
5098 && (tga->type == STT_FUNC
5099 || tga->needs_plt)
5100 && !(SYMBOL_CALLS_LOCAL (info, tga)
5101 || UNDEFWEAK_NO_DYNAMIC_RELOC (info, tga)))
5102 {
5103 struct plt_entry *ent;
5104 for (ent = tga->plt.plist; ent != NULL; ent = ent->next)
5105 if (ent->plt.refcount > 0)
5106 break;
5107 if (ent != NULL)
5108 {
5109 tga->root.type = bfd_link_hash_indirect;
5110 tga->root.u.i.link = &opt->root;
5111 ppc_elf_copy_indirect_symbol (info, opt, tga);
5112 opt->mark = 1;
5113 if (opt->dynindx != -1)
5114 {
5115 /* Use __tls_get_addr_opt in dynamic relocations. */
5116 opt->dynindx = -1;
5117 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
5118 opt->dynstr_index);
5119 if (!bfd_elf_link_record_dynamic_symbol (info, opt))
5120 return FALSE;
5121 }
5122 htab->tls_get_addr = opt;
5123 }
5124 }
5125 }
5126 else
5127 htab->params->no_tls_get_addr_opt = TRUE;
5128 }
5129 if (htab->plt_type == PLT_NEW
5130 && htab->elf.splt != NULL
5131 && htab->elf.splt->output_section != NULL)
5132 {
5133 elf_section_type (htab->elf.splt->output_section) = SHT_PROGBITS;
5134 elf_section_flags (htab->elf.splt->output_section) = SHF_ALLOC + SHF_WRITE;
5135 }
5136
5137 return _bfd_elf_tls_setup (obfd, info);
5138 }
5139
5140 /* Return TRUE iff REL is a branch reloc with a global symbol matching
5141 HASH. */
5142
5143 static bfd_boolean
5144 branch_reloc_hash_match (const bfd *ibfd,
5145 const Elf_Internal_Rela *rel,
5146 const struct elf_link_hash_entry *hash)
5147 {
5148 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
5149 enum elf_ppc_reloc_type r_type = ELF32_R_TYPE (rel->r_info);
5150 unsigned int r_symndx = ELF32_R_SYM (rel->r_info);
5151
5152 if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type))
5153 {
5154 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
5155 struct elf_link_hash_entry *h;
5156
5157 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5158 while (h->root.type == bfd_link_hash_indirect
5159 || h->root.type == bfd_link_hash_warning)
5160 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5161 if (h == hash)
5162 return TRUE;
5163 }
5164 return FALSE;
5165 }
5166
5167 /* Run through all the TLS relocs looking for optimization
5168 opportunities. */
5169
5170 bfd_boolean
5171 ppc_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED,
5172 struct bfd_link_info *info)
5173 {
5174 bfd *ibfd;
5175 asection *sec;
5176 struct ppc_elf_link_hash_table *htab;
5177 int pass;
5178
5179 if (!bfd_link_executable (info))
5180 return TRUE;
5181
5182 htab = ppc_elf_hash_table (info);
5183 if (htab == NULL)
5184 return FALSE;
5185
5186 /* Make two passes through the relocs. First time check that tls
5187 relocs involved in setting up a tls_get_addr call are indeed
5188 followed by such a call. If they are not, don't do any tls
5189 optimization. On the second pass twiddle tls_mask flags to
5190 notify relocate_section that optimization can be done, and
5191 adjust got and plt refcounts. */
5192 for (pass = 0; pass < 2; ++pass)
5193 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
5194 {
5195 Elf_Internal_Sym *locsyms = NULL;
5196 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
5197 asection *got2 = bfd_get_section_by_name (ibfd, ".got2");
5198
5199 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
5200 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
5201 {
5202 Elf_Internal_Rela *relstart, *rel, *relend;
5203 int expecting_tls_get_addr = 0;
5204
5205 /* Read the relocations. */
5206 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
5207 info->keep_memory);
5208 if (relstart == NULL)
5209 return FALSE;
5210
5211 relend = relstart + sec->reloc_count;
5212 for (rel = relstart; rel < relend; rel++)
5213 {
5214 enum elf_ppc_reloc_type r_type;
5215 unsigned long r_symndx;
5216 struct elf_link_hash_entry *h = NULL;
5217 char *tls_mask;
5218 char tls_set, tls_clear;
5219 bfd_boolean is_local;
5220 bfd_signed_vma *got_count;
5221
5222 r_symndx = ELF32_R_SYM (rel->r_info);
5223 if (r_symndx >= symtab_hdr->sh_info)
5224 {
5225 struct elf_link_hash_entry **sym_hashes;
5226
5227 sym_hashes = elf_sym_hashes (ibfd);
5228 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5229 while (h->root.type == bfd_link_hash_indirect
5230 || h->root.type == bfd_link_hash_warning)
5231 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5232 }
5233
5234 is_local = FALSE;
5235 if (h == NULL
5236 || !h->def_dynamic)
5237 is_local = TRUE;
5238
5239 r_type = ELF32_R_TYPE (rel->r_info);
5240 /* If this section has old-style __tls_get_addr calls
5241 without marker relocs, then check that each
5242 __tls_get_addr call reloc is preceded by a reloc
5243 that conceivably belongs to the __tls_get_addr arg
5244 setup insn. If we don't find matching arg setup
5245 relocs, don't do any tls optimization. */
5246 if (pass == 0
5247 && sec->has_tls_get_addr_call
5248 && h != NULL
5249 && h == htab->tls_get_addr
5250 && !expecting_tls_get_addr
5251 && is_branch_reloc (r_type))
5252 {
5253 info->callbacks->minfo ("%H __tls_get_addr lost arg, "
5254 "TLS optimization disabled\n",
5255 ibfd, sec, rel->r_offset);
5256 if (elf_section_data (sec)->relocs != relstart)
5257 free (relstart);
5258 return TRUE;
5259 }
5260
5261 expecting_tls_get_addr = 0;
5262 switch (r_type)
5263 {
5264 case R_PPC_GOT_TLSLD16:
5265 case R_PPC_GOT_TLSLD16_LO:
5266 expecting_tls_get_addr = 1;
5267 /* Fall through. */
5268
5269 case R_PPC_GOT_TLSLD16_HI:
5270 case R_PPC_GOT_TLSLD16_HA:
5271 /* These relocs should never be against a symbol
5272 defined in a shared lib. Leave them alone if
5273 that turns out to be the case. */
5274 if (!is_local)
5275 continue;
5276
5277 /* LD -> LE */
5278 tls_set = 0;
5279 tls_clear = TLS_LD;
5280 break;
5281
5282 case R_PPC_GOT_TLSGD16:
5283 case R_PPC_GOT_TLSGD16_LO:
5284 expecting_tls_get_addr = 1;
5285 /* Fall through. */
5286
5287 case R_PPC_GOT_TLSGD16_HI:
5288 case R_PPC_GOT_TLSGD16_HA:
5289 if (is_local)
5290 /* GD -> LE */
5291 tls_set = 0;
5292 else
5293 /* GD -> IE */
5294 tls_set = TLS_TLS | TLS_TPRELGD;
5295 tls_clear = TLS_GD;
5296 break;
5297
5298 case R_PPC_GOT_TPREL16:
5299 case R_PPC_GOT_TPREL16_LO:
5300 case R_PPC_GOT_TPREL16_HI:
5301 case R_PPC_GOT_TPREL16_HA:
5302 if (is_local)
5303 {
5304 /* IE -> LE */
5305 tls_set = 0;
5306 tls_clear = TLS_TPREL;
5307 break;
5308 }
5309 else
5310 continue;
5311
5312 case R_PPC_TLSGD:
5313 case R_PPC_TLSLD:
5314 expecting_tls_get_addr = 2;
5315 tls_set = 0;
5316 tls_clear = 0;
5317 break;
5318
5319 default:
5320 continue;
5321 }
5322
5323 if (pass == 0)
5324 {
5325 if (!expecting_tls_get_addr
5326 || (expecting_tls_get_addr == 1
5327 && !sec->has_tls_get_addr_call))
5328 continue;
5329
5330 if (rel + 1 < relend
5331 && branch_reloc_hash_match (ibfd, rel + 1,
5332 htab->tls_get_addr))
5333 continue;
5334
5335 /* Uh oh, we didn't find the expected call. We
5336 could just mark this symbol to exclude it
5337 from tls optimization but it's safer to skip
5338 the entire optimization. */
5339 info->callbacks->minfo (_("%H arg lost __tls_get_addr, "
5340 "TLS optimization disabled\n"),
5341 ibfd, sec, rel->r_offset);
5342 if (elf_section_data (sec)->relocs != relstart)
5343 free (relstart);
5344 return TRUE;
5345 }
5346
5347 if (expecting_tls_get_addr)
5348 {
5349 struct plt_entry *ent;
5350 bfd_vma addend = 0;
5351
5352 if (bfd_link_pic (info)
5353 && ELF32_R_TYPE (rel[1].r_info) == R_PPC_PLTREL24)
5354 addend = rel[1].r_addend;
5355 ent = find_plt_ent (&htab->tls_get_addr->plt.plist,
5356 got2, addend);
5357 if (ent != NULL && ent->plt.refcount > 0)
5358 ent->plt.refcount -= 1;
5359
5360 if (expecting_tls_get_addr == 2)
5361 continue;
5362 }
5363
5364 if (h != NULL)
5365 {
5366 tls_mask = &ppc_elf_hash_entry (h)->tls_mask;
5367 got_count = &h->got.refcount;
5368 }
5369 else
5370 {
5371 bfd_signed_vma *lgot_refs;
5372 struct plt_entry **local_plt;
5373 char *lgot_masks;
5374
5375 if (locsyms == NULL)
5376 {
5377 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
5378 if (locsyms == NULL)
5379 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
5380 symtab_hdr->sh_info,
5381 0, NULL, NULL, NULL);
5382 if (locsyms == NULL)
5383 {
5384 if (elf_section_data (sec)->relocs != relstart)
5385 free (relstart);
5386 return FALSE;
5387 }
5388 }
5389 lgot_refs = elf_local_got_refcounts (ibfd);
5390 if (lgot_refs == NULL)
5391 abort ();
5392 local_plt = (struct plt_entry **)
5393 (lgot_refs + symtab_hdr->sh_info);
5394 lgot_masks = (char *) (local_plt + symtab_hdr->sh_info);
5395 tls_mask = &lgot_masks[r_symndx];
5396 got_count = &lgot_refs[r_symndx];
5397 }
5398
5399 if (tls_set == 0)
5400 {
5401 /* We managed to get rid of a got entry. */
5402 if (*got_count > 0)
5403 *got_count -= 1;
5404 }
5405
5406 *tls_mask |= tls_set;
5407 *tls_mask &= ~tls_clear;
5408 }
5409
5410 if (elf_section_data (sec)->relocs != relstart)
5411 free (relstart);
5412 }
5413
5414 if (locsyms != NULL
5415 && (symtab_hdr->contents != (unsigned char *) locsyms))
5416 {
5417 if (!info->keep_memory)
5418 free (locsyms);
5419 else
5420 symtab_hdr->contents = (unsigned char *) locsyms;
5421 }
5422 }
5423 htab->do_tls_opt = 1;
5424 return TRUE;
5425 }
5426 \f
5427 /* Return true if we have dynamic relocs that apply to read-only sections. */
5428
5429 static bfd_boolean
5430 readonly_dynrelocs (struct elf_link_hash_entry *h,
5431 struct bfd_link_info *info)
5432 {
5433 struct elf_dyn_relocs *p;
5434
5435 for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next)
5436 {
5437 asection *s = p->sec->output_section;
5438
5439 if (s != NULL
5440 && ((s->flags & (SEC_READONLY | SEC_ALLOC))
5441 == (SEC_READONLY | SEC_ALLOC)))
5442 {
5443 if (info)
5444 info->callbacks->minfo (_("%B: dynamic relocation in read-only section `%A'\n"),
5445 p->sec->owner, p->sec);
5446
5447 return TRUE;
5448 }
5449 }
5450 return FALSE;
5451 }
5452
5453 /* Adjust a symbol defined by a dynamic object and referenced by a
5454 regular object. The current definition is in some section of the
5455 dynamic object, but we're not including those sections. We have to
5456 change the definition to something the rest of the link can
5457 understand. */
5458
5459 static bfd_boolean
5460 ppc_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
5461 struct elf_link_hash_entry *h)
5462 {
5463 struct ppc_elf_link_hash_table *htab;
5464 asection *s;
5465
5466 #ifdef DEBUG
5467 fprintf (stderr, "ppc_elf_adjust_dynamic_symbol called for %s\n",
5468 h->root.root.string);
5469 #endif
5470
5471 /* Make sure we know what is going on here. */
5472 htab = ppc_elf_hash_table (info);
5473 BFD_ASSERT (htab->elf.dynobj != NULL
5474 && (h->needs_plt
5475 || h->type == STT_GNU_IFUNC
5476 || h->u.weakdef != NULL
5477 || (h->def_dynamic
5478 && h->ref_regular
5479 && !h->def_regular)));
5480
5481 /* Deal with function syms. */
5482 if (h->type == STT_FUNC
5483 || h->type == STT_GNU_IFUNC
5484 || h->needs_plt)
5485 {
5486 /* Clear procedure linkage table information for any symbol that
5487 won't need a .plt entry. */
5488 struct plt_entry *ent;
5489 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
5490 if (ent->plt.refcount > 0)
5491 break;
5492 if (ent == NULL
5493 || (h->type != STT_GNU_IFUNC
5494 && (SYMBOL_CALLS_LOCAL (info, h)
5495 || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h))))
5496 {
5497 /* A PLT entry is not required/allowed when:
5498
5499 1. We are not using ld.so; because then the PLT entry
5500 can't be set up, so we can't use one. In this case,
5501 ppc_elf_adjust_dynamic_symbol won't even be called.
5502
5503 2. GC has rendered the entry unused.
5504
5505 3. We know for certain that a call to this symbol
5506 will go to this object, or will remain undefined. */
5507 h->plt.plist = NULL;
5508 h->needs_plt = 0;
5509 h->pointer_equality_needed = 0;
5510 }
5511 else
5512 {
5513 /* Taking a function's address in a read/write section
5514 doesn't require us to define the function symbol in the
5515 executable on a plt call stub. A dynamic reloc can
5516 be used instead, giving better runtime performance.
5517 (Calls via that function pointer don't need to bounce
5518 through the plt call stub.) Similarly, use a dynamic
5519 reloc for a weak reference when possible, allowing the
5520 resolution of the symbol to be set at load time rather
5521 than link time. */
5522 if ((h->pointer_equality_needed
5523 || (!h->ref_regular_nonweak && h->non_got_ref))
5524 && !htab->is_vxworks
5525 && !ppc_elf_hash_entry (h)->has_sda_refs
5526 && !readonly_dynrelocs (h, NULL))
5527 {
5528 h->pointer_equality_needed = 0;
5529 /* After adjust_dynamic_symbol, non_got_ref set in the
5530 non-pic case means that dyn_relocs for this symbol
5531 should be discarded. */
5532 h->non_got_ref = 0;
5533 }
5534 }
5535 h->protected_def = 0;
5536 return TRUE;
5537 }
5538 else
5539 h->plt.plist = NULL;
5540
5541 /* If this is a weak symbol, and there is a real definition, the
5542 processor independent code will have arranged for us to see the
5543 real definition first, and we can just use the same value. */
5544 if (h->u.weakdef != NULL)
5545 {
5546 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
5547 || h->u.weakdef->root.type == bfd_link_hash_defweak);
5548 h->root.u.def.section = h->u.weakdef->root.u.def.section;
5549 h->root.u.def.value = h->u.weakdef->root.u.def.value;
5550 if (ELIMINATE_COPY_RELOCS)
5551 h->non_got_ref = h->u.weakdef->non_got_ref;
5552 return TRUE;
5553 }
5554
5555 /* This is a reference to a symbol defined by a dynamic object which
5556 is not a function. */
5557
5558 /* If we are creating a shared library, we must presume that the
5559 only references to the symbol are via the global offset table.
5560 For such cases we need not do anything here; the relocations will
5561 be handled correctly by relocate_section. */
5562 if (bfd_link_pic (info))
5563 {
5564 h->protected_def = 0;
5565 return TRUE;
5566 }
5567
5568 /* If there are no references to this symbol that do not use the
5569 GOT, we don't need to generate a copy reloc. */
5570 if (!h->non_got_ref)
5571 {
5572 h->protected_def = 0;
5573 return TRUE;
5574 }
5575
5576 /* Protected variables do not work with .dynbss. The copy in
5577 .dynbss won't be used by the shared library with the protected
5578 definition for the variable. Editing to PIC, or text relocations
5579 are preferable to an incorrect program. */
5580 if (h->protected_def)
5581 {
5582 if (ELIMINATE_COPY_RELOCS
5583 && ppc_elf_hash_entry (h)->has_addr16_ha
5584 && ppc_elf_hash_entry (h)->has_addr16_lo
5585 && htab->params->pic_fixup == 0
5586 && info->disable_target_specific_optimizations <= 1)
5587 htab->params->pic_fixup = 1;
5588 h->non_got_ref = 0;
5589 return TRUE;
5590 }
5591
5592 /* If -z nocopyreloc was given, we won't generate them either. */
5593 if (info->nocopyreloc)
5594 {
5595 h->non_got_ref = 0;
5596 return TRUE;
5597 }
5598
5599 /* If we didn't find any dynamic relocs in read-only sections, then
5600 we'll be keeping the dynamic relocs and avoiding the copy reloc.
5601 We can't do this if there are any small data relocations. This
5602 doesn't work on VxWorks, where we can not have dynamic
5603 relocations (other than copy and jump slot relocations) in an
5604 executable. */
5605 if (ELIMINATE_COPY_RELOCS
5606 && !ppc_elf_hash_entry (h)->has_sda_refs
5607 && !htab->is_vxworks
5608 && !h->def_regular
5609 && !readonly_dynrelocs (h, NULL))
5610 {
5611 h->non_got_ref = 0;
5612 return TRUE;
5613 }
5614
5615 /* We must allocate the symbol in our .dynbss section, which will
5616 become part of the .bss section of the executable. There will be
5617 an entry for this symbol in the .dynsym section. The dynamic
5618 object will contain position independent code, so all references
5619 from the dynamic object to this symbol will go through the global
5620 offset table. The dynamic linker will use the .dynsym entry to
5621 determine the address it must put in the global offset table, so
5622 both the dynamic object and the regular object will refer to the
5623 same memory location for the variable.
5624
5625 Of course, if the symbol is referenced using SDAREL relocs, we
5626 must instead allocate it in .sbss. */
5627
5628 if (ppc_elf_hash_entry (h)->has_sda_refs)
5629 s = htab->dynsbss;
5630 else if ((h->root.u.def.section->flags & SEC_READONLY) != 0)
5631 s = htab->elf.sdynrelro;
5632 else
5633 s = htab->elf.sdynbss;
5634 BFD_ASSERT (s != NULL);
5635
5636 /* We must generate a R_PPC_COPY reloc to tell the dynamic linker to
5637 copy the initial value out of the dynamic object and into the
5638 runtime process image. We need to remember the offset into the
5639 .rela.bss section we are going to use. */
5640 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
5641 {
5642 asection *srel;
5643
5644 if (ppc_elf_hash_entry (h)->has_sda_refs)
5645 srel = htab->relsbss;
5646 else if ((h->root.u.def.section->flags & SEC_READONLY) != 0)
5647 srel = htab->elf.sreldynrelro;
5648 else
5649 srel = htab->elf.srelbss;
5650 BFD_ASSERT (srel != NULL);
5651 srel->size += sizeof (Elf32_External_Rela);
5652 h->needs_copy = 1;
5653 }
5654
5655 return _bfd_elf_adjust_dynamic_copy (info, h, s);
5656 }
5657 \f
5658 /* Generate a symbol to mark plt call stubs. For non-PIC code the sym is
5659 xxxxxxxx.plt_call32.<callee> where xxxxxxxx is a hex number, usually 0,
5660 specifying the addend on the plt relocation. For -fpic code, the sym
5661 is xxxxxxxx.plt_pic32.<callee>, and for -fPIC
5662 xxxxxxxx.got2.plt_pic32.<callee>. */
5663
5664 static bfd_boolean
5665 add_stub_sym (struct plt_entry *ent,
5666 struct elf_link_hash_entry *h,
5667 struct bfd_link_info *info)
5668 {
5669 struct elf_link_hash_entry *sh;
5670 size_t len1, len2, len3;
5671 char *name;
5672 const char *stub;
5673 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
5674
5675 if (bfd_link_pic (info))
5676 stub = ".plt_pic32.";
5677 else
5678 stub = ".plt_call32.";
5679
5680 len1 = strlen (h->root.root.string);
5681 len2 = strlen (stub);
5682 len3 = 0;
5683 if (ent->sec)
5684 len3 = strlen (ent->sec->name);
5685 name = bfd_malloc (len1 + len2 + len3 + 9);
5686 if (name == NULL)
5687 return FALSE;
5688 sprintf (name, "%08x", (unsigned) ent->addend & 0xffffffff);
5689 if (ent->sec)
5690 memcpy (name + 8, ent->sec->name, len3);
5691 memcpy (name + 8 + len3, stub, len2);
5692 memcpy (name + 8 + len3 + len2, h->root.root.string, len1 + 1);
5693 sh = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
5694 if (sh == NULL)
5695 return FALSE;
5696 if (sh->root.type == bfd_link_hash_new)
5697 {
5698 sh->root.type = bfd_link_hash_defined;
5699 sh->root.u.def.section = htab->glink;
5700 sh->root.u.def.value = ent->glink_offset;
5701 sh->ref_regular = 1;
5702 sh->def_regular = 1;
5703 sh->ref_regular_nonweak = 1;
5704 sh->forced_local = 1;
5705 sh->non_elf = 0;
5706 sh->root.linker_def = 1;
5707 }
5708 return TRUE;
5709 }
5710
5711 /* Allocate NEED contiguous space in .got, and return the offset.
5712 Handles allocation of the got header when crossing 32k. */
5713
5714 static bfd_vma
5715 allocate_got (struct ppc_elf_link_hash_table *htab, unsigned int need)
5716 {
5717 bfd_vma where;
5718 unsigned int max_before_header;
5719
5720 if (htab->plt_type == PLT_VXWORKS)
5721 {
5722 where = htab->elf.sgot->size;
5723 htab->elf.sgot->size += need;
5724 }
5725 else
5726 {
5727 max_before_header = htab->plt_type == PLT_NEW ? 32768 : 32764;
5728 if (need <= htab->got_gap)
5729 {
5730 where = max_before_header - htab->got_gap;
5731 htab->got_gap -= need;
5732 }
5733 else
5734 {
5735 if (htab->elf.sgot->size + need > max_before_header
5736 && htab->elf.sgot->size <= max_before_header)
5737 {
5738 htab->got_gap = max_before_header - htab->elf.sgot->size;
5739 htab->elf.sgot->size = max_before_header + htab->got_header_size;
5740 }
5741 where = htab->elf.sgot->size;
5742 htab->elf.sgot->size += need;
5743 }
5744 }
5745 return where;
5746 }
5747
5748 /* If H is undefined, make it dynamic if that makes sense. */
5749
5750 static bfd_boolean
5751 ensure_undef_dynamic (struct bfd_link_info *info,
5752 struct elf_link_hash_entry *h)
5753 {
5754 struct elf_link_hash_table *htab = elf_hash_table (info);
5755
5756 if (htab->dynamic_sections_created
5757 && ((info->dynamic_undefined_weak != 0
5758 && h->root.type == bfd_link_hash_undefweak)
5759 || h->root.type == bfd_link_hash_undefined)
5760 && h->dynindx == -1
5761 && !h->forced_local
5762 && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
5763 return bfd_elf_link_record_dynamic_symbol (info, h);
5764 return TRUE;
5765 }
5766
5767 /* Allocate space in associated reloc sections for dynamic relocs. */
5768
5769 static bfd_boolean
5770 allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
5771 {
5772 struct bfd_link_info *info = inf;
5773 struct ppc_elf_link_hash_entry *eh;
5774 struct ppc_elf_link_hash_table *htab;
5775 struct elf_dyn_relocs *p;
5776 bfd_boolean dyn;
5777
5778 if (h->root.type == bfd_link_hash_indirect)
5779 return TRUE;
5780
5781 htab = ppc_elf_hash_table (info);
5782 eh = (struct ppc_elf_link_hash_entry *) h;
5783 if (eh->elf.got.refcount > 0
5784 || (ELIMINATE_COPY_RELOCS
5785 && !eh->elf.def_regular
5786 && eh->elf.protected_def
5787 && eh->has_addr16_ha
5788 && eh->has_addr16_lo
5789 && htab->params->pic_fixup > 0))
5790 {
5791 unsigned int need;
5792
5793 /* Make sure this symbol is output as a dynamic symbol. */
5794 if (!ensure_undef_dynamic (info, &eh->elf))
5795 return FALSE;
5796
5797 need = 0;
5798 if ((eh->tls_mask & TLS_TLS) != 0)
5799 {
5800 if ((eh->tls_mask & TLS_LD) != 0)
5801 {
5802 if (!eh->elf.def_dynamic)
5803 /* We'll just use htab->tlsld_got.offset. This should
5804 always be the case. It's a little odd if we have
5805 a local dynamic reloc against a non-local symbol. */
5806 htab->tlsld_got.refcount += 1;
5807 else
5808 need += 8;
5809 }
5810 if ((eh->tls_mask & TLS_GD) != 0)
5811 need += 8;
5812 if ((eh->tls_mask & (TLS_TPREL | TLS_TPRELGD)) != 0)
5813 need += 4;
5814 if ((eh->tls_mask & TLS_DTPREL) != 0)
5815 need += 4;
5816 }
5817 else
5818 need += 4;
5819 if (need == 0)
5820 eh->elf.got.offset = (bfd_vma) -1;
5821 else
5822 {
5823 eh->elf.got.offset = allocate_got (htab, need);
5824 if ((bfd_link_pic (info)
5825 || (htab->elf.dynamic_sections_created
5826 && eh->elf.dynindx != -1
5827 && !SYMBOL_REFERENCES_LOCAL (info, &eh->elf)))
5828 && !UNDEFWEAK_NO_DYNAMIC_RELOC (info, &eh->elf))
5829 {
5830 asection *rsec = htab->elf.srelgot;
5831
5832 if (eh->elf.type == STT_GNU_IFUNC)
5833 rsec = htab->elf.irelplt;
5834 /* All the entries we allocated need relocs.
5835 Except LD only needs one. */
5836 if ((eh->tls_mask & TLS_LD) != 0
5837 && eh->elf.def_dynamic)
5838 need -= 4;
5839 rsec->size += need * (sizeof (Elf32_External_Rela) / 4);
5840 }
5841 }
5842 }
5843 else
5844 eh->elf.got.offset = (bfd_vma) -1;
5845
5846 /* If no dynamic sections we can't have dynamic relocs, except for
5847 IFUNCs which are handled even in static executables. */
5848 if (!htab->elf.dynamic_sections_created
5849 && h->type != STT_GNU_IFUNC)
5850 eh->dyn_relocs = NULL;
5851
5852 if (eh->dyn_relocs == NULL)
5853 ;
5854
5855 /* In the shared -Bsymbolic case, discard space allocated for
5856 dynamic pc-relative relocs against symbols which turn out to be
5857 defined in regular objects. For the normal shared case, discard
5858 space for relocs that have become local due to symbol visibility
5859 changes. */
5860 else if (bfd_link_pic (info))
5861 {
5862 /* Discard relocs on undefined symbols that must be local. */
5863 if (h->root.type == bfd_link_hash_undefined
5864 && ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
5865 eh->dyn_relocs = NULL;
5866
5867 /* Also discard relocs on undefined weak syms with non-default
5868 visibility, or when dynamic_undefined_weak says so. */
5869 else if (UNDEFWEAK_NO_DYNAMIC_RELOC (info, h))
5870 eh->dyn_relocs = NULL;
5871
5872 /* Relocs that use pc_count are those that appear on a call insn,
5873 or certain REL relocs (see must_be_dyn_reloc) that can be
5874 generated via assembly. We want calls to protected symbols to
5875 resolve directly to the function rather than going via the plt.
5876 If people want function pointer comparisons to work as expected
5877 then they should avoid writing weird assembly. */
5878 else if (SYMBOL_CALLS_LOCAL (info, h))
5879 {
5880 struct elf_dyn_relocs **pp;
5881
5882 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
5883 {
5884 p->count -= p->pc_count;
5885 p->pc_count = 0;
5886 if (p->count == 0)
5887 *pp = p->next;
5888 else
5889 pp = &p->next;
5890 }
5891 }
5892
5893 if (htab->is_vxworks)
5894 {
5895 struct elf_dyn_relocs **pp;
5896
5897 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
5898 {
5899 if (strcmp (p->sec->output_section->name, ".tls_vars") == 0)
5900 *pp = p->next;
5901 else
5902 pp = &p->next;
5903 }
5904 }
5905
5906 if (eh->dyn_relocs != NULL)
5907 {
5908 /* Make sure this symbol is output as a dynamic symbol. */
5909 if (!ensure_undef_dynamic (info, h))
5910 return FALSE;
5911 }
5912 }
5913 else if (ELIMINATE_COPY_RELOCS)
5914 {
5915 /* For the non-pic case, discard space for relocs against
5916 symbols which turn out to need copy relocs or are not
5917 dynamic. */
5918 if (!h->non_got_ref
5919 && !h->def_regular
5920 && !(h->protected_def
5921 && eh->has_addr16_ha
5922 && eh->has_addr16_lo
5923 && htab->params->pic_fixup > 0))
5924 {
5925 /* Make sure this symbol is output as a dynamic symbol. */
5926 if (!ensure_undef_dynamic (info, h))
5927 return FALSE;
5928
5929 if (h->dynindx == -1)
5930 eh->dyn_relocs = NULL;
5931 }
5932 else
5933 eh->dyn_relocs = NULL;
5934 }
5935
5936 /* Allocate space. */
5937 for (p = eh->dyn_relocs; p != NULL; p = p->next)
5938 {
5939 asection *sreloc = elf_section_data (p->sec)->sreloc;
5940 if (eh->elf.type == STT_GNU_IFUNC)
5941 sreloc = htab->elf.irelplt;
5942 sreloc->size += p->count * sizeof (Elf32_External_Rela);
5943 }
5944
5945 /* Handle PLT relocs. Done last, after dynindx has settled. */
5946 dyn = htab->elf.dynamic_sections_created && h->dynindx != -1;
5947 if (dyn || h->type == STT_GNU_IFUNC)
5948 {
5949 struct plt_entry *ent;
5950 bfd_boolean doneone = FALSE;
5951 bfd_vma plt_offset = 0, glink_offset = 0;
5952
5953 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
5954 if (ent->plt.refcount > 0)
5955 {
5956 asection *s = htab->elf.splt;
5957
5958 if (!dyn)
5959 s = htab->elf.iplt;
5960
5961 if (htab->plt_type == PLT_NEW || !dyn)
5962 {
5963 if (!doneone)
5964 {
5965 plt_offset = s->size;
5966 s->size += 4;
5967 }
5968 ent->plt.offset = plt_offset;
5969
5970 s = htab->glink;
5971 if (!doneone || bfd_link_pic (info))
5972 {
5973 glink_offset = s->size;
5974 s->size += GLINK_ENTRY_SIZE;
5975 if (h == htab->tls_get_addr
5976 && !htab->params->no_tls_get_addr_opt)
5977 s->size += TLS_GET_ADDR_GLINK_SIZE - GLINK_ENTRY_SIZE;
5978 }
5979 if (!doneone
5980 && !bfd_link_pic (info)
5981 && h->def_dynamic
5982 && !h->def_regular)
5983 {
5984 h->root.u.def.section = s;
5985 h->root.u.def.value = glink_offset;
5986 }
5987 ent->glink_offset = glink_offset;
5988
5989 if (htab->params->emit_stub_syms
5990 && !add_stub_sym (ent, h, info))
5991 return FALSE;
5992 }
5993 else
5994 {
5995 if (!doneone)
5996 {
5997 /* If this is the first .plt entry, make room
5998 for the special first entry. */
5999 if (s->size == 0)
6000 s->size += htab->plt_initial_entry_size;
6001
6002 /* The PowerPC PLT is actually composed of two
6003 parts, the first part is 2 words (for a load
6004 and a jump), and then there is a remaining
6005 word available at the end. */
6006 plt_offset = (htab->plt_initial_entry_size
6007 + (htab->plt_slot_size
6008 * ((s->size
6009 - htab->plt_initial_entry_size)
6010 / htab->plt_entry_size)));
6011
6012 /* If this symbol is not defined in a regular
6013 file, and we are not generating a shared
6014 library, then set the symbol to this location
6015 in the .plt. This is to avoid text
6016 relocations, and is required to make
6017 function pointers compare as equal between
6018 the normal executable and the shared library. */
6019 if (! bfd_link_pic (info)
6020 && h->def_dynamic
6021 && !h->def_regular)
6022 {
6023 h->root.u.def.section = s;
6024 h->root.u.def.value = plt_offset;
6025 }
6026
6027 /* Make room for this entry. */
6028 s->size += htab->plt_entry_size;
6029 /* After the 8192nd entry, room for two entries
6030 is allocated. */
6031 if (htab->plt_type == PLT_OLD
6032 && (s->size - htab->plt_initial_entry_size)
6033 / htab->plt_entry_size
6034 > PLT_NUM_SINGLE_ENTRIES)
6035 s->size += htab->plt_entry_size;
6036 }
6037 ent->plt.offset = plt_offset;
6038 }
6039
6040 /* We also need to make an entry in the .rela.plt section. */
6041 if (!doneone)
6042 {
6043 if (!dyn)
6044 htab->elf.irelplt->size += sizeof (Elf32_External_Rela);
6045 else
6046 {
6047 htab->elf.srelplt->size += sizeof (Elf32_External_Rela);
6048
6049 if (htab->plt_type == PLT_VXWORKS)
6050 {
6051 /* Allocate space for the unloaded relocations. */
6052 if (!bfd_link_pic (info)
6053 && htab->elf.dynamic_sections_created)
6054 {
6055 if (ent->plt.offset
6056 == (bfd_vma) htab->plt_initial_entry_size)
6057 {
6058 htab->srelplt2->size
6059 += (sizeof (Elf32_External_Rela)
6060 * VXWORKS_PLTRESOLVE_RELOCS);
6061 }
6062
6063 htab->srelplt2->size
6064 += (sizeof (Elf32_External_Rela)
6065 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS);
6066 }
6067
6068 /* Every PLT entry has an associated GOT entry in
6069 .got.plt. */
6070 htab->elf.sgotplt->size += 4;
6071 }
6072 }
6073 doneone = TRUE;
6074 }
6075 }
6076 else
6077 ent->plt.offset = (bfd_vma) -1;
6078
6079 if (!doneone)
6080 {
6081 h->plt.plist = NULL;
6082 h->needs_plt = 0;
6083 }
6084 }
6085 else
6086 {
6087 h->plt.plist = NULL;
6088 h->needs_plt = 0;
6089 }
6090
6091 return TRUE;
6092 }
6093
6094 /* Set DF_TEXTREL if we find any dynamic relocs that apply to
6095 read-only sections. */
6096
6097 static bfd_boolean
6098 maybe_set_textrel (struct elf_link_hash_entry *h, void *info_p)
6099 {
6100 struct bfd_link_info *info;
6101
6102 if (h->root.type == bfd_link_hash_indirect)
6103 return TRUE;
6104
6105 info = (struct bfd_link_info *) info_p;
6106 if (readonly_dynrelocs (h, info))
6107 {
6108 info->flags |= DF_TEXTREL;
6109
6110 /* Not an error, just cut short the traversal. */
6111 return FALSE;
6112 }
6113 return TRUE;
6114 }
6115
6116 static const unsigned char glink_eh_frame_cie[] =
6117 {
6118 0, 0, 0, 16, /* length. */
6119 0, 0, 0, 0, /* id. */
6120 1, /* CIE version. */
6121 'z', 'R', 0, /* Augmentation string. */
6122 4, /* Code alignment. */
6123 0x7c, /* Data alignment. */
6124 65, /* RA reg. */
6125 1, /* Augmentation size. */
6126 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding. */
6127 DW_CFA_def_cfa, 1, 0 /* def_cfa: r1 offset 0. */
6128 };
6129
6130 /* Set the sizes of the dynamic sections. */
6131
6132 static bfd_boolean
6133 ppc_elf_size_dynamic_sections (bfd *output_bfd,
6134 struct bfd_link_info *info)
6135 {
6136 struct ppc_elf_link_hash_table *htab;
6137 asection *s;
6138 bfd_boolean relocs;
6139 bfd *ibfd;
6140
6141 #ifdef DEBUG
6142 fprintf (stderr, "ppc_elf_size_dynamic_sections called\n");
6143 #endif
6144
6145 htab = ppc_elf_hash_table (info);
6146 BFD_ASSERT (htab->elf.dynobj != NULL);
6147
6148 if (elf_hash_table (info)->dynamic_sections_created)
6149 {
6150 /* Set the contents of the .interp section to the interpreter. */
6151 if (bfd_link_executable (info) && !info->nointerp)
6152 {
6153 s = bfd_get_linker_section (htab->elf.dynobj, ".interp");
6154 BFD_ASSERT (s != NULL);
6155 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
6156 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
6157 }
6158 }
6159
6160 if (htab->plt_type == PLT_OLD)
6161 htab->got_header_size = 16;
6162 else if (htab->plt_type == PLT_NEW)
6163 htab->got_header_size = 12;
6164
6165 /* Set up .got offsets for local syms, and space for local dynamic
6166 relocs. */
6167 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
6168 {
6169 bfd_signed_vma *local_got;
6170 bfd_signed_vma *end_local_got;
6171 struct plt_entry **local_plt;
6172 struct plt_entry **end_local_plt;
6173 char *lgot_masks;
6174 bfd_size_type locsymcount;
6175 Elf_Internal_Shdr *symtab_hdr;
6176
6177 if (!is_ppc_elf (ibfd))
6178 continue;
6179
6180 for (s = ibfd->sections; s != NULL; s = s->next)
6181 {
6182 struct ppc_dyn_relocs *p;
6183
6184 for (p = ((struct ppc_dyn_relocs *)
6185 elf_section_data (s)->local_dynrel);
6186 p != NULL;
6187 p = p->next)
6188 {
6189 if (!bfd_is_abs_section (p->sec)
6190 && bfd_is_abs_section (p->sec->output_section))
6191 {
6192 /* Input section has been discarded, either because
6193 it is a copy of a linkonce section or due to
6194 linker script /DISCARD/, so we'll be discarding
6195 the relocs too. */
6196 }
6197 else if (htab->is_vxworks
6198 && strcmp (p->sec->output_section->name,
6199 ".tls_vars") == 0)
6200 {
6201 /* Relocations in vxworks .tls_vars sections are
6202 handled specially by the loader. */
6203 }
6204 else if (p->count != 0)
6205 {
6206 asection *sreloc = elf_section_data (p->sec)->sreloc;
6207 if (p->ifunc)
6208 sreloc = htab->elf.irelplt;
6209 sreloc->size += p->count * sizeof (Elf32_External_Rela);
6210 if ((p->sec->output_section->flags
6211 & (SEC_READONLY | SEC_ALLOC))
6212 == (SEC_READONLY | SEC_ALLOC))
6213 {
6214 info->flags |= DF_TEXTREL;
6215 info->callbacks->minfo (_("%B: dynamic relocation in read-only section `%A'\n"),
6216 p->sec->owner, p->sec);
6217 }
6218 }
6219 }
6220 }
6221
6222 local_got = elf_local_got_refcounts (ibfd);
6223 if (!local_got)
6224 continue;
6225
6226 symtab_hdr = &elf_symtab_hdr (ibfd);
6227 locsymcount = symtab_hdr->sh_info;
6228 end_local_got = local_got + locsymcount;
6229 local_plt = (struct plt_entry **) end_local_got;
6230 end_local_plt = local_plt + locsymcount;
6231 lgot_masks = (char *) end_local_plt;
6232
6233 for (; local_got < end_local_got; ++local_got, ++lgot_masks)
6234 if (*local_got > 0)
6235 {
6236 unsigned int need = 0;
6237 if ((*lgot_masks & TLS_TLS) != 0)
6238 {
6239 if ((*lgot_masks & TLS_GD) != 0)
6240 need += 8;
6241 if ((*lgot_masks & TLS_LD) != 0)
6242 htab->tlsld_got.refcount += 1;
6243 if ((*lgot_masks & (TLS_TPREL | TLS_TPRELGD)) != 0)
6244 need += 4;
6245 if ((*lgot_masks & TLS_DTPREL) != 0)
6246 need += 4;
6247 }
6248 else
6249 need += 4;
6250 if (need == 0)
6251 *local_got = (bfd_vma) -1;
6252 else
6253 {
6254 *local_got = allocate_got (htab, need);
6255 if (bfd_link_pic (info))
6256 {
6257 asection *srel = htab->elf.srelgot;
6258 if ((*lgot_masks & PLT_IFUNC) != 0)
6259 srel = htab->elf.irelplt;
6260 srel->size += need * (sizeof (Elf32_External_Rela) / 4);
6261 }
6262 }
6263 }
6264 else
6265 *local_got = (bfd_vma) -1;
6266
6267 if (htab->is_vxworks)
6268 continue;
6269
6270 /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */
6271 for (; local_plt < end_local_plt; ++local_plt)
6272 {
6273 struct plt_entry *ent;
6274 bfd_boolean doneone = FALSE;
6275 bfd_vma plt_offset = 0, glink_offset = 0;
6276
6277 for (ent = *local_plt; ent != NULL; ent = ent->next)
6278 if (ent->plt.refcount > 0)
6279 {
6280 s = htab->elf.iplt;
6281
6282 if (!doneone)
6283 {
6284 plt_offset = s->size;
6285 s->size += 4;
6286 }
6287 ent->plt.offset = plt_offset;
6288
6289 s = htab->glink;
6290 if (!doneone || bfd_link_pic (info))
6291 {
6292 glink_offset = s->size;
6293 s->size += GLINK_ENTRY_SIZE;
6294 }
6295 ent->glink_offset = glink_offset;
6296
6297 if (!doneone)
6298 {
6299 htab->elf.irelplt->size += sizeof (Elf32_External_Rela);
6300 doneone = TRUE;
6301 }
6302 }
6303 else
6304 ent->plt.offset = (bfd_vma) -1;
6305 }
6306 }
6307
6308 /* Allocate space for global sym dynamic relocs. */
6309 elf_link_hash_traverse (elf_hash_table (info), allocate_dynrelocs, info);
6310
6311 if (htab->tlsld_got.refcount > 0)
6312 {
6313 htab->tlsld_got.offset = allocate_got (htab, 8);
6314 if (bfd_link_pic (info))
6315 htab->elf.srelgot->size += sizeof (Elf32_External_Rela);
6316 }
6317 else
6318 htab->tlsld_got.offset = (bfd_vma) -1;
6319
6320 if (htab->elf.sgot != NULL && htab->plt_type != PLT_VXWORKS)
6321 {
6322 unsigned int g_o_t = 32768;
6323
6324 /* If we haven't allocated the header, do so now. When we get here,
6325 for old plt/got the got size will be 0 to 32764 (not allocated),
6326 or 32780 to 65536 (header allocated). For new plt/got, the
6327 corresponding ranges are 0 to 32768 and 32780 to 65536. */
6328 if (htab->elf.sgot->size <= 32768)
6329 {
6330 g_o_t = htab->elf.sgot->size;
6331 if (htab->plt_type == PLT_OLD)
6332 g_o_t += 4;
6333 htab->elf.sgot->size += htab->got_header_size;
6334 }
6335
6336 htab->elf.hgot->root.u.def.value = g_o_t;
6337 }
6338 if (bfd_link_pic (info))
6339 {
6340 struct elf_link_hash_entry *sda = htab->sdata[0].sym;
6341
6342 sda->root.u.def.section = htab->elf.hgot->root.u.def.section;
6343 sda->root.u.def.value = htab->elf.hgot->root.u.def.value;
6344 }
6345 if (info->emitrelocations)
6346 {
6347 struct elf_link_hash_entry *sda = htab->sdata[0].sym;
6348
6349 if (sda != NULL && sda->ref_regular)
6350 sda->root.u.def.section->flags |= SEC_KEEP;
6351 sda = htab->sdata[1].sym;
6352 if (sda != NULL && sda->ref_regular)
6353 sda->root.u.def.section->flags |= SEC_KEEP;
6354 }
6355
6356 if (htab->glink != NULL
6357 && htab->glink->size != 0
6358 && htab->elf.dynamic_sections_created)
6359 {
6360 htab->glink_pltresolve = htab->glink->size;
6361 /* Space for the branch table. ??? We don't need entries for
6362 non-dynamic symbols in this table. This case can arise with
6363 static ifuncs or forced local ifuncs. */
6364 htab->glink->size += htab->glink->size / (GLINK_ENTRY_SIZE / 4) - 4;
6365 /* Pad out to align the start of PLTresolve. */
6366 htab->glink->size += -htab->glink->size & (htab->params->ppc476_workaround
6367 ? 63 : 15);
6368 htab->glink->size += GLINK_PLTRESOLVE;
6369
6370 if (htab->params->emit_stub_syms)
6371 {
6372 struct elf_link_hash_entry *sh;
6373 sh = elf_link_hash_lookup (&htab->elf, "__glink",
6374 TRUE, FALSE, FALSE);
6375 if (sh == NULL)
6376 return FALSE;
6377 if (sh->root.type == bfd_link_hash_new)
6378 {
6379 sh->root.type = bfd_link_hash_defined;
6380 sh->root.u.def.section = htab->glink;
6381 sh->root.u.def.value = htab->glink_pltresolve;
6382 sh->ref_regular = 1;
6383 sh->def_regular = 1;
6384 sh->ref_regular_nonweak = 1;
6385 sh->forced_local = 1;
6386 sh->non_elf = 0;
6387 sh->root.linker_def = 1;
6388 }
6389 sh = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve",
6390 TRUE, FALSE, FALSE);
6391 if (sh == NULL)
6392 return FALSE;
6393 if (sh->root.type == bfd_link_hash_new)
6394 {
6395 sh->root.type = bfd_link_hash_defined;
6396 sh->root.u.def.section = htab->glink;
6397 sh->root.u.def.value = htab->glink->size - GLINK_PLTRESOLVE;
6398 sh->ref_regular = 1;
6399 sh->def_regular = 1;
6400 sh->ref_regular_nonweak = 1;
6401 sh->forced_local = 1;
6402 sh->non_elf = 0;
6403 sh->root.linker_def = 1;
6404 }
6405 }
6406 }
6407
6408 if (htab->glink != NULL
6409 && htab->glink->size != 0
6410 && htab->glink_eh_frame != NULL
6411 && !bfd_is_abs_section (htab->glink_eh_frame->output_section)
6412 && _bfd_elf_eh_frame_present (info))
6413 {
6414 s = htab->glink_eh_frame;
6415 s->size = sizeof (glink_eh_frame_cie) + 20;
6416 if (bfd_link_pic (info))
6417 {
6418 s->size += 4;
6419 if (htab->glink->size - GLINK_PLTRESOLVE + 8 >= 256)
6420 s->size += 4;
6421 }
6422 }
6423
6424 /* We've now determined the sizes of the various dynamic sections.
6425 Allocate memory for them. */
6426 relocs = FALSE;
6427 for (s = htab->elf.dynobj->sections; s != NULL; s = s->next)
6428 {
6429 bfd_boolean strip_section = TRUE;
6430
6431 if ((s->flags & SEC_LINKER_CREATED) == 0)
6432 continue;
6433
6434 if (s == htab->elf.splt
6435 || s == htab->elf.sgot)
6436 {
6437 /* We'd like to strip these sections if they aren't needed, but if
6438 we've exported dynamic symbols from them we must leave them.
6439 It's too late to tell BFD to get rid of the symbols. */
6440 if (htab->elf.hplt != NULL)
6441 strip_section = FALSE;
6442 /* Strip this section if we don't need it; see the
6443 comment below. */
6444 }
6445 else if (s == htab->elf.iplt
6446 || s == htab->glink
6447 || s == htab->glink_eh_frame
6448 || s == htab->elf.sgotplt
6449 || s == htab->sbss
6450 || s == htab->elf.sdynbss
6451 || s == htab->elf.sdynrelro
6452 || s == htab->dynsbss)
6453 {
6454 /* Strip these too. */
6455 }
6456 else if (s == htab->sdata[0].section
6457 || s == htab->sdata[1].section)
6458 {
6459 strip_section = (s->flags & SEC_KEEP) == 0;
6460 }
6461 else if (CONST_STRNEQ (bfd_get_section_name (htab->elf.dynobj, s),
6462 ".rela"))
6463 {
6464 if (s->size != 0)
6465 {
6466 /* Remember whether there are any relocation sections. */
6467 relocs = TRUE;
6468
6469 /* We use the reloc_count field as a counter if we need
6470 to copy relocs into the output file. */
6471 s->reloc_count = 0;
6472 }
6473 }
6474 else
6475 {
6476 /* It's not one of our sections, so don't allocate space. */
6477 continue;
6478 }
6479
6480 if (s->size == 0 && strip_section)
6481 {
6482 /* If we don't need this section, strip it from the
6483 output file. This is mostly to handle .rela.bss and
6484 .rela.plt. We must create both sections in
6485 create_dynamic_sections, because they must be created
6486 before the linker maps input sections to output
6487 sections. The linker does that before
6488 adjust_dynamic_symbol is called, and it is that
6489 function which decides whether anything needs to go
6490 into these sections. */
6491 s->flags |= SEC_EXCLUDE;
6492 continue;
6493 }
6494
6495 if ((s->flags & SEC_HAS_CONTENTS) == 0)
6496 continue;
6497
6498 /* Allocate memory for the section contents. */
6499 s->contents = bfd_zalloc (htab->elf.dynobj, s->size);
6500 if (s->contents == NULL)
6501 return FALSE;
6502 }
6503
6504 if (htab->elf.dynamic_sections_created)
6505 {
6506 /* Add some entries to the .dynamic section. We fill in the
6507 values later, in ppc_elf_finish_dynamic_sections, but we
6508 must add the entries now so that we get the correct size for
6509 the .dynamic section. The DT_DEBUG entry is filled in by the
6510 dynamic linker and used by the debugger. */
6511 #define add_dynamic_entry(TAG, VAL) \
6512 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
6513
6514 if (bfd_link_executable (info))
6515 {
6516 if (!add_dynamic_entry (DT_DEBUG, 0))
6517 return FALSE;
6518 }
6519
6520 if (htab->elf.splt != NULL && htab->elf.splt->size != 0)
6521 {
6522 if (!add_dynamic_entry (DT_PLTGOT, 0)
6523 || !add_dynamic_entry (DT_PLTRELSZ, 0)
6524 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
6525 || !add_dynamic_entry (DT_JMPREL, 0))
6526 return FALSE;
6527 }
6528
6529 if (htab->plt_type == PLT_NEW
6530 && htab->glink != NULL
6531 && htab->glink->size != 0)
6532 {
6533 if (!add_dynamic_entry (DT_PPC_GOT, 0))
6534 return FALSE;
6535 if (!htab->params->no_tls_get_addr_opt
6536 && htab->tls_get_addr != NULL
6537 && htab->tls_get_addr->plt.plist != NULL
6538 && !add_dynamic_entry (DT_PPC_OPT, PPC_OPT_TLS))
6539 return FALSE;
6540 }
6541
6542 if (relocs)
6543 {
6544 if (!add_dynamic_entry (DT_RELA, 0)
6545 || !add_dynamic_entry (DT_RELASZ, 0)
6546 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
6547 return FALSE;
6548 }
6549
6550 /* If any dynamic relocs apply to a read-only section, then we
6551 need a DT_TEXTREL entry. */
6552 if ((info->flags & DF_TEXTREL) == 0)
6553 elf_link_hash_traverse (elf_hash_table (info), maybe_set_textrel,
6554 info);
6555
6556 if ((info->flags & DF_TEXTREL) != 0)
6557 {
6558 if (!add_dynamic_entry (DT_TEXTREL, 0))
6559 return FALSE;
6560 }
6561 if (htab->is_vxworks
6562 && !elf_vxworks_add_dynamic_entries (output_bfd, info))
6563 return FALSE;
6564 }
6565 #undef add_dynamic_entry
6566
6567 if (htab->glink_eh_frame != NULL
6568 && htab->glink_eh_frame->contents != NULL)
6569 {
6570 unsigned char *p = htab->glink_eh_frame->contents;
6571 bfd_vma val;
6572
6573 memcpy (p, glink_eh_frame_cie, sizeof (glink_eh_frame_cie));
6574 /* CIE length (rewrite in case little-endian). */
6575 bfd_put_32 (htab->elf.dynobj, sizeof (glink_eh_frame_cie) - 4, p);
6576 p += sizeof (glink_eh_frame_cie);
6577 /* FDE length. */
6578 val = htab->glink_eh_frame->size - 4 - sizeof (glink_eh_frame_cie);
6579 bfd_put_32 (htab->elf.dynobj, val, p);
6580 p += 4;
6581 /* CIE pointer. */
6582 val = p - htab->glink_eh_frame->contents;
6583 bfd_put_32 (htab->elf.dynobj, val, p);
6584 p += 4;
6585 /* Offset to .glink. Set later. */
6586 p += 4;
6587 /* .glink size. */
6588 bfd_put_32 (htab->elf.dynobj, htab->glink->size, p);
6589 p += 4;
6590 /* Augmentation. */
6591 p += 1;
6592
6593 if (bfd_link_pic (info)
6594 && htab->elf.dynamic_sections_created)
6595 {
6596 bfd_vma adv = (htab->glink->size - GLINK_PLTRESOLVE + 8) >> 2;
6597 if (adv < 64)
6598 *p++ = DW_CFA_advance_loc + adv;
6599 else if (adv < 256)
6600 {
6601 *p++ = DW_CFA_advance_loc1;
6602 *p++ = adv;
6603 }
6604 else if (adv < 65536)
6605 {
6606 *p++ = DW_CFA_advance_loc2;
6607 bfd_put_16 (htab->elf.dynobj, adv, p);
6608 p += 2;
6609 }
6610 else
6611 {
6612 *p++ = DW_CFA_advance_loc4;
6613 bfd_put_32 (htab->elf.dynobj, adv, p);
6614 p += 4;
6615 }
6616 *p++ = DW_CFA_register;
6617 *p++ = 65;
6618 p++;
6619 *p++ = DW_CFA_advance_loc + 4;
6620 *p++ = DW_CFA_restore_extended;
6621 *p++ = 65;
6622 }
6623 BFD_ASSERT ((bfd_vma) ((p + 3 - htab->glink_eh_frame->contents) & -4)
6624 == htab->glink_eh_frame->size);
6625 }
6626
6627 return TRUE;
6628 }
6629
6630 /* Arrange to have _SDA_BASE_ or _SDA2_BASE_ stripped from the output
6631 if it looks like nothing is using them. */
6632
6633 static void
6634 maybe_strip_sdasym (bfd *output_bfd, elf_linker_section_t *lsect)
6635 {
6636 struct elf_link_hash_entry *sda = lsect->sym;
6637
6638 if (sda != NULL && !sda->ref_regular && sda->dynindx == -1)
6639 {
6640 asection *s;
6641
6642 s = bfd_get_section_by_name (output_bfd, lsect->name);
6643 if (s == NULL || bfd_section_removed_from_list (output_bfd, s))
6644 {
6645 s = bfd_get_section_by_name (output_bfd, lsect->bss_name);
6646 if (s == NULL || bfd_section_removed_from_list (output_bfd, s))
6647 {
6648 sda->def_regular = 0;
6649 /* This is somewhat magic. See elf_link_output_extsym. */
6650 sda->ref_dynamic = 1;
6651 sda->forced_local = 0;
6652 }
6653 }
6654 }
6655 }
6656
6657 void
6658 ppc_elf_maybe_strip_sdata_syms (struct bfd_link_info *info)
6659 {
6660 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
6661
6662 if (htab != NULL)
6663 {
6664 maybe_strip_sdasym (info->output_bfd, &htab->sdata[0]);
6665 maybe_strip_sdasym (info->output_bfd, &htab->sdata[1]);
6666 }
6667 }
6668
6669
6670 /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
6671
6672 static bfd_boolean
6673 ppc_elf_hash_symbol (struct elf_link_hash_entry *h)
6674 {
6675 if (h->plt.plist != NULL
6676 && !h->def_regular
6677 && (!h->pointer_equality_needed
6678 || !h->ref_regular_nonweak))
6679 return FALSE;
6680
6681 return _bfd_elf_hash_symbol (h);
6682 }
6683 \f
6684 #define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0]))
6685
6686 /* Relaxation trampolines. r12 is available for clobbering (r11, is
6687 used for some functions that are allowed to break the ABI). */
6688 static const int shared_stub_entry[] =
6689 {
6690 0x7c0802a6, /* mflr 0 */
6691 0x429f0005, /* bcl 20, 31, .Lxxx */
6692 0x7d8802a6, /* mflr 12 */
6693 0x3d8c0000, /* addis 12, 12, (xxx-.Lxxx)@ha */
6694 0x398c0000, /* addi 12, 12, (xxx-.Lxxx)@l */
6695 0x7c0803a6, /* mtlr 0 */
6696 0x7d8903a6, /* mtctr 12 */
6697 0x4e800420, /* bctr */
6698 };
6699
6700 static const int stub_entry[] =
6701 {
6702 0x3d800000, /* lis 12,xxx@ha */
6703 0x398c0000, /* addi 12,12,xxx@l */
6704 0x7d8903a6, /* mtctr 12 */
6705 0x4e800420, /* bctr */
6706 };
6707
6708 struct ppc_elf_relax_info
6709 {
6710 unsigned int workaround_size;
6711 unsigned int picfixup_size;
6712 };
6713
6714 /* This function implements long branch trampolines, and the ppc476
6715 icache bug workaround. Any section needing trampolines or patch
6716 space for the workaround has its size extended so that we can
6717 add trampolines at the end of the section. */
6718
6719 static bfd_boolean
6720 ppc_elf_relax_section (bfd *abfd,
6721 asection *isec,
6722 struct bfd_link_info *link_info,
6723 bfd_boolean *again)
6724 {
6725 struct one_branch_fixup
6726 {
6727 struct one_branch_fixup *next;
6728 asection *tsec;
6729 /* Final link, can use the symbol offset. For a
6730 relocatable link we use the symbol's index. */
6731 bfd_vma toff;
6732 bfd_vma trampoff;
6733 };
6734
6735 Elf_Internal_Shdr *symtab_hdr;
6736 bfd_byte *contents = NULL;
6737 Elf_Internal_Sym *isymbuf = NULL;
6738 Elf_Internal_Rela *internal_relocs = NULL;
6739 Elf_Internal_Rela *irel, *irelend = NULL;
6740 struct one_branch_fixup *branch_fixups = NULL;
6741 struct ppc_elf_relax_info *relax_info = NULL;
6742 unsigned changes = 0;
6743 bfd_boolean workaround_change;
6744 struct ppc_elf_link_hash_table *htab;
6745 bfd_size_type trampbase, trampoff, newsize, picfixup_size;
6746 asection *got2;
6747 bfd_boolean maybe_pasted;
6748
6749 *again = FALSE;
6750
6751 /* No need to do anything with non-alloc or non-code sections. */
6752 if ((isec->flags & SEC_ALLOC) == 0
6753 || (isec->flags & SEC_CODE) == 0
6754 || (isec->flags & SEC_LINKER_CREATED) != 0
6755 || isec->size < 4)
6756 return TRUE;
6757
6758 /* We cannot represent the required PIC relocs in the output, so don't
6759 do anything. The linker doesn't support mixing -shared and -r
6760 anyway. */
6761 if (bfd_link_relocatable (link_info) && bfd_link_pic (link_info))
6762 return TRUE;
6763
6764 htab = ppc_elf_hash_table (link_info);
6765 if (htab == NULL)
6766 return TRUE;
6767
6768 isec->size = (isec->size + 3) & -4;
6769 if (isec->rawsize == 0)
6770 isec->rawsize = isec->size;
6771 trampbase = isec->size;
6772
6773 BFD_ASSERT (isec->sec_info_type == SEC_INFO_TYPE_NONE
6774 || isec->sec_info_type == SEC_INFO_TYPE_TARGET);
6775 isec->sec_info_type = SEC_INFO_TYPE_TARGET;
6776
6777 if (htab->params->ppc476_workaround
6778 || htab->params->pic_fixup > 0)
6779 {
6780 if (elf_section_data (isec)->sec_info == NULL)
6781 {
6782 elf_section_data (isec)->sec_info
6783 = bfd_zalloc (abfd, sizeof (struct ppc_elf_relax_info));
6784 if (elf_section_data (isec)->sec_info == NULL)
6785 return FALSE;
6786 }
6787 relax_info = elf_section_data (isec)->sec_info;
6788 trampbase -= relax_info->workaround_size;
6789 }
6790
6791 maybe_pasted = (strcmp (isec->output_section->name, ".init") == 0
6792 || strcmp (isec->output_section->name, ".fini") == 0);
6793 /* Space for a branch around any trampolines. */
6794 trampoff = trampbase;
6795 if (maybe_pasted && trampbase == isec->rawsize)
6796 trampoff += 4;
6797
6798 symtab_hdr = &elf_symtab_hdr (abfd);
6799 picfixup_size = 0;
6800 if (htab->params->branch_trampolines
6801 || htab->params->pic_fixup > 0)
6802 {
6803 /* Get a copy of the native relocations. */
6804 if (isec->reloc_count != 0)
6805 {
6806 internal_relocs = _bfd_elf_link_read_relocs (abfd, isec, NULL, NULL,
6807 link_info->keep_memory);
6808 if (internal_relocs == NULL)
6809 goto error_return;
6810 }
6811
6812 got2 = bfd_get_section_by_name (abfd, ".got2");
6813
6814 irelend = internal_relocs + isec->reloc_count;
6815 for (irel = internal_relocs; irel < irelend; irel++)
6816 {
6817 unsigned long r_type = ELF32_R_TYPE (irel->r_info);
6818 bfd_vma toff, roff;
6819 asection *tsec;
6820 struct one_branch_fixup *f;
6821 size_t insn_offset = 0;
6822 bfd_vma max_branch_offset = 0, val;
6823 bfd_byte *hit_addr;
6824 unsigned long t0;
6825 struct elf_link_hash_entry *h;
6826 struct plt_entry **plist;
6827 unsigned char sym_type;
6828
6829 switch (r_type)
6830 {
6831 case R_PPC_REL24:
6832 case R_PPC_LOCAL24PC:
6833 case R_PPC_PLTREL24:
6834 max_branch_offset = 1 << 25;
6835 break;
6836
6837 case R_PPC_REL14:
6838 case R_PPC_REL14_BRTAKEN:
6839 case R_PPC_REL14_BRNTAKEN:
6840 max_branch_offset = 1 << 15;
6841 break;
6842
6843 case R_PPC_ADDR16_HA:
6844 if (htab->params->pic_fixup > 0)
6845 break;
6846 continue;
6847
6848 default:
6849 continue;
6850 }
6851
6852 /* Get the value of the symbol referred to by the reloc. */
6853 h = NULL;
6854 if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
6855 {
6856 /* A local symbol. */
6857 Elf_Internal_Sym *isym;
6858
6859 /* Read this BFD's local symbols. */
6860 if (isymbuf == NULL)
6861 {
6862 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
6863 if (isymbuf == NULL)
6864 isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
6865 symtab_hdr->sh_info, 0,
6866 NULL, NULL, NULL);
6867 if (isymbuf == 0)
6868 goto error_return;
6869 }
6870 isym = isymbuf + ELF32_R_SYM (irel->r_info);
6871 if (isym->st_shndx == SHN_UNDEF)
6872 tsec = bfd_und_section_ptr;
6873 else if (isym->st_shndx == SHN_ABS)
6874 tsec = bfd_abs_section_ptr;
6875 else if (isym->st_shndx == SHN_COMMON)
6876 tsec = bfd_com_section_ptr;
6877 else
6878 tsec = bfd_section_from_elf_index (abfd, isym->st_shndx);
6879
6880 toff = isym->st_value;
6881 sym_type = ELF_ST_TYPE (isym->st_info);
6882 }
6883 else
6884 {
6885 /* Global symbol handling. */
6886 unsigned long indx;
6887
6888 indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
6889 h = elf_sym_hashes (abfd)[indx];
6890
6891 while (h->root.type == bfd_link_hash_indirect
6892 || h->root.type == bfd_link_hash_warning)
6893 h = (struct elf_link_hash_entry *) h->root.u.i.link;
6894
6895 if (h->root.type == bfd_link_hash_defined
6896 || h->root.type == bfd_link_hash_defweak)
6897 {
6898 tsec = h->root.u.def.section;
6899 toff = h->root.u.def.value;
6900 }
6901 else if (h->root.type == bfd_link_hash_undefined
6902 || h->root.type == bfd_link_hash_undefweak)
6903 {
6904 tsec = bfd_und_section_ptr;
6905 toff = bfd_link_relocatable (link_info) ? indx : 0;
6906 }
6907 else
6908 continue;
6909
6910 /* If this branch is to __tls_get_addr then we may later
6911 optimise away the call. We won't be needing a long-
6912 branch stub in that case. */
6913 if (bfd_link_executable (link_info)
6914 && h == htab->tls_get_addr
6915 && irel != internal_relocs)
6916 {
6917 unsigned long t_symndx = ELF32_R_SYM (irel[-1].r_info);
6918 unsigned long t_rtype = ELF32_R_TYPE (irel[-1].r_info);
6919 unsigned int tls_mask = 0;
6920
6921 /* The previous reloc should be one of R_PPC_TLSGD or
6922 R_PPC_TLSLD, or for older object files, a reloc
6923 on the __tls_get_addr arg setup insn. Get tls
6924 mask bits from the symbol on that reloc. */
6925 if (t_symndx < symtab_hdr->sh_info)
6926 {
6927 bfd_vma *local_got_offsets = elf_local_got_offsets (abfd);
6928
6929 if (local_got_offsets != NULL)
6930 {
6931 struct plt_entry **local_plt = (struct plt_entry **)
6932 (local_got_offsets + symtab_hdr->sh_info);
6933 char *lgot_masks = (char *)
6934 (local_plt + symtab_hdr->sh_info);
6935 tls_mask = lgot_masks[t_symndx];
6936 }
6937 }
6938 else
6939 {
6940 struct elf_link_hash_entry *th
6941 = elf_sym_hashes (abfd)[t_symndx - symtab_hdr->sh_info];
6942
6943 while (th->root.type == bfd_link_hash_indirect
6944 || th->root.type == bfd_link_hash_warning)
6945 th = (struct elf_link_hash_entry *) th->root.u.i.link;
6946
6947 tls_mask
6948 = ((struct ppc_elf_link_hash_entry *) th)->tls_mask;
6949 }
6950
6951 /* The mask bits tell us if the call will be
6952 optimised away. */
6953 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0
6954 && (t_rtype == R_PPC_TLSGD
6955 || t_rtype == R_PPC_GOT_TLSGD16
6956 || t_rtype == R_PPC_GOT_TLSGD16_LO))
6957 continue;
6958 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0
6959 && (t_rtype == R_PPC_TLSLD
6960 || t_rtype == R_PPC_GOT_TLSLD16
6961 || t_rtype == R_PPC_GOT_TLSLD16_LO))
6962 continue;
6963 }
6964
6965 sym_type = h->type;
6966 }
6967
6968 if (r_type == R_PPC_ADDR16_HA)
6969 {
6970 if (h != NULL
6971 && !h->def_regular
6972 && h->protected_def
6973 && ppc_elf_hash_entry (h)->has_addr16_ha
6974 && ppc_elf_hash_entry (h)->has_addr16_lo)
6975 picfixup_size += 12;
6976 continue;
6977 }
6978
6979 /* The condition here under which we call find_plt_ent must
6980 match that in relocate_section. If we call find_plt_ent here
6981 but not in relocate_section, or vice versa, then the branch
6982 destination used here may be incorrect. */
6983 plist = NULL;
6984 if (h != NULL)
6985 {
6986 /* We know is_branch_reloc (r_type) is true. */
6987 if (h->type == STT_GNU_IFUNC
6988 || r_type == R_PPC_PLTREL24)
6989 plist = &h->plt.plist;
6990 }
6991 else if (sym_type == STT_GNU_IFUNC
6992 && elf_local_got_offsets (abfd) != NULL)
6993 {
6994 bfd_vma *local_got_offsets = elf_local_got_offsets (abfd);
6995 struct plt_entry **local_plt = (struct plt_entry **)
6996 (local_got_offsets + symtab_hdr->sh_info);
6997 plist = local_plt + ELF32_R_SYM (irel->r_info);
6998 }
6999 if (plist != NULL)
7000 {
7001 bfd_vma addend = 0;
7002 struct plt_entry *ent;
7003
7004 if (r_type == R_PPC_PLTREL24 && bfd_link_pic (link_info))
7005 addend = irel->r_addend;
7006 ent = find_plt_ent (plist, got2, addend);
7007 if (ent != NULL)
7008 {
7009 if (htab->plt_type == PLT_NEW
7010 || h == NULL
7011 || !htab->elf.dynamic_sections_created
7012 || h->dynindx == -1)
7013 {
7014 tsec = htab->glink;
7015 toff = ent->glink_offset;
7016 }
7017 else
7018 {
7019 tsec = htab->elf.splt;
7020 toff = ent->plt.offset;
7021 }
7022 }
7023 }
7024
7025 /* If the branch and target are in the same section, you have
7026 no hope of adding stubs. We'll error out later should the
7027 branch overflow. */
7028 if (tsec == isec)
7029 continue;
7030
7031 /* There probably isn't any reason to handle symbols in
7032 SEC_MERGE sections; SEC_MERGE doesn't seem a likely
7033 attribute for a code section, and we are only looking at
7034 branches. However, implement it correctly here as a
7035 reference for other target relax_section functions. */
7036 if (0 && tsec->sec_info_type == SEC_INFO_TYPE_MERGE)
7037 {
7038 /* At this stage in linking, no SEC_MERGE symbol has been
7039 adjusted, so all references to such symbols need to be
7040 passed through _bfd_merged_section_offset. (Later, in
7041 relocate_section, all SEC_MERGE symbols *except* for
7042 section symbols have been adjusted.)
7043
7044 gas may reduce relocations against symbols in SEC_MERGE
7045 sections to a relocation against the section symbol when
7046 the original addend was zero. When the reloc is against
7047 a section symbol we should include the addend in the
7048 offset passed to _bfd_merged_section_offset, since the
7049 location of interest is the original symbol. On the
7050 other hand, an access to "sym+addend" where "sym" is not
7051 a section symbol should not include the addend; Such an
7052 access is presumed to be an offset from "sym"; The
7053 location of interest is just "sym". */
7054 if (sym_type == STT_SECTION)
7055 toff += irel->r_addend;
7056
7057 toff
7058 = _bfd_merged_section_offset (abfd, &tsec,
7059 elf_section_data (tsec)->sec_info,
7060 toff);
7061
7062 if (sym_type != STT_SECTION)
7063 toff += irel->r_addend;
7064 }
7065 /* PLTREL24 addends are special. */
7066 else if (r_type != R_PPC_PLTREL24)
7067 toff += irel->r_addend;
7068
7069 /* Attempted -shared link of non-pic code loses. */
7070 if ((!bfd_link_relocatable (link_info)
7071 && tsec == bfd_und_section_ptr)
7072 || tsec->output_section == NULL
7073 || (tsec->owner != NULL
7074 && (tsec->owner->flags & BFD_PLUGIN) != 0))
7075 continue;
7076
7077 roff = irel->r_offset;
7078
7079 /* If the branch is in range, no need to do anything. */
7080 if (tsec != bfd_und_section_ptr
7081 && (!bfd_link_relocatable (link_info)
7082 /* A relocatable link may have sections moved during
7083 final link, so do not presume they remain in range. */
7084 || tsec->output_section == isec->output_section))
7085 {
7086 bfd_vma symaddr, reladdr;
7087
7088 symaddr = tsec->output_section->vma + tsec->output_offset + toff;
7089 reladdr = isec->output_section->vma + isec->output_offset + roff;
7090 if (symaddr - reladdr + max_branch_offset
7091 < 2 * max_branch_offset)
7092 continue;
7093 }
7094
7095 /* Look for an existing fixup to this address. */
7096 for (f = branch_fixups; f ; f = f->next)
7097 if (f->tsec == tsec && f->toff == toff)
7098 break;
7099
7100 if (f == NULL)
7101 {
7102 size_t size;
7103 unsigned long stub_rtype;
7104
7105 val = trampoff - roff;
7106 if (val >= max_branch_offset)
7107 /* Oh dear, we can't reach a trampoline. Don't try to add
7108 one. We'll report an error later. */
7109 continue;
7110
7111 if (bfd_link_pic (link_info))
7112 {
7113 size = 4 * ARRAY_SIZE (shared_stub_entry);
7114 insn_offset = 12;
7115 }
7116 else
7117 {
7118 size = 4 * ARRAY_SIZE (stub_entry);
7119 insn_offset = 0;
7120 }
7121 stub_rtype = R_PPC_RELAX;
7122 if (tsec == htab->elf.splt
7123 || tsec == htab->glink)
7124 {
7125 stub_rtype = R_PPC_RELAX_PLT;
7126 if (r_type == R_PPC_PLTREL24)
7127 stub_rtype = R_PPC_RELAX_PLTREL24;
7128 }
7129
7130 /* Hijack the old relocation. Since we need two
7131 relocations for this use a "composite" reloc. */
7132 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
7133 stub_rtype);
7134 irel->r_offset = trampoff + insn_offset;
7135 if (r_type == R_PPC_PLTREL24
7136 && stub_rtype != R_PPC_RELAX_PLTREL24)
7137 irel->r_addend = 0;
7138
7139 /* Record the fixup so we don't do it again this section. */
7140 f = bfd_malloc (sizeof (*f));
7141 f->next = branch_fixups;
7142 f->tsec = tsec;
7143 f->toff = toff;
7144 f->trampoff = trampoff;
7145 branch_fixups = f;
7146
7147 trampoff += size;
7148 changes++;
7149 }
7150 else
7151 {
7152 val = f->trampoff - roff;
7153 if (val >= max_branch_offset)
7154 continue;
7155
7156 /* Nop out the reloc, since we're finalizing things here. */
7157 irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
7158 }
7159
7160 /* Get the section contents. */
7161 if (contents == NULL)
7162 {
7163 /* Get cached copy if it exists. */
7164 if (elf_section_data (isec)->this_hdr.contents != NULL)
7165 contents = elf_section_data (isec)->this_hdr.contents;
7166 /* Go get them off disk. */
7167 else if (!bfd_malloc_and_get_section (abfd, isec, &contents))
7168 goto error_return;
7169 }
7170
7171 /* Fix up the existing branch to hit the trampoline. */
7172 hit_addr = contents + roff;
7173 switch (r_type)
7174 {
7175 case R_PPC_REL24:
7176 case R_PPC_LOCAL24PC:
7177 case R_PPC_PLTREL24:
7178 t0 = bfd_get_32 (abfd, hit_addr);
7179 t0 &= ~0x3fffffc;
7180 t0 |= val & 0x3fffffc;
7181 bfd_put_32 (abfd, t0, hit_addr);
7182 break;
7183
7184 case R_PPC_REL14:
7185 case R_PPC_REL14_BRTAKEN:
7186 case R_PPC_REL14_BRNTAKEN:
7187 t0 = bfd_get_32 (abfd, hit_addr);
7188 t0 &= ~0xfffc;
7189 t0 |= val & 0xfffc;
7190 bfd_put_32 (abfd, t0, hit_addr);
7191 break;
7192 }
7193 }
7194
7195 while (branch_fixups != NULL)
7196 {
7197 struct one_branch_fixup *f = branch_fixups;
7198 branch_fixups = branch_fixups->next;
7199 free (f);
7200 }
7201 }
7202
7203 workaround_change = FALSE;
7204 newsize = trampoff;
7205 if (htab->params->ppc476_workaround
7206 && (!bfd_link_relocatable (link_info)
7207 || isec->output_section->alignment_power >= htab->params->pagesize_p2))
7208 {
7209 bfd_vma addr, end_addr;
7210 unsigned int crossings;
7211 bfd_vma pagesize = (bfd_vma) 1 << htab->params->pagesize_p2;
7212
7213 addr = isec->output_section->vma + isec->output_offset;
7214 end_addr = addr + trampoff;
7215 addr &= -pagesize;
7216 crossings = ((end_addr & -pagesize) - addr) >> htab->params->pagesize_p2;
7217 if (crossings != 0)
7218 {
7219 /* Keep space aligned, to ensure the patch code itself does
7220 not cross a page. Don't decrease size calculated on a
7221 previous pass as otherwise we might never settle on a layout. */
7222 newsize = 15 - ((end_addr - 1) & 15);
7223 newsize += crossings * 16;
7224 if (relax_info->workaround_size < newsize)
7225 {
7226 relax_info->workaround_size = newsize;
7227 workaround_change = TRUE;
7228 }
7229 /* Ensure relocate_section is called. */
7230 isec->flags |= SEC_RELOC;
7231 }
7232 newsize = trampoff + relax_info->workaround_size;
7233 }
7234
7235 if (htab->params->pic_fixup > 0)
7236 {
7237 picfixup_size -= relax_info->picfixup_size;
7238 if (picfixup_size != 0)
7239 relax_info->picfixup_size += picfixup_size;
7240 newsize += relax_info->picfixup_size;
7241 }
7242
7243 if (changes != 0 || picfixup_size != 0 || workaround_change)
7244 isec->size = newsize;
7245
7246 if (isymbuf != NULL
7247 && symtab_hdr->contents != (unsigned char *) isymbuf)
7248 {
7249 if (! link_info->keep_memory)
7250 free (isymbuf);
7251 else
7252 {
7253 /* Cache the symbols for elf_link_input_bfd. */
7254 symtab_hdr->contents = (unsigned char *) isymbuf;
7255 }
7256 }
7257
7258 if (contents != NULL
7259 && elf_section_data (isec)->this_hdr.contents != contents)
7260 {
7261 if (!changes && !link_info->keep_memory)
7262 free (contents);
7263 else
7264 {
7265 /* Cache the section contents for elf_link_input_bfd. */
7266 elf_section_data (isec)->this_hdr.contents = contents;
7267 }
7268 }
7269
7270 changes += picfixup_size;
7271 if (changes != 0)
7272 {
7273 /* Append sufficient NOP relocs so we can write out relocation
7274 information for the trampolines. */
7275 Elf_Internal_Shdr *rel_hdr;
7276 Elf_Internal_Rela *new_relocs = bfd_malloc ((changes + isec->reloc_count)
7277 * sizeof (*new_relocs));
7278 unsigned ix;
7279
7280 if (!new_relocs)
7281 goto error_return;
7282 memcpy (new_relocs, internal_relocs,
7283 isec->reloc_count * sizeof (*new_relocs));
7284 for (ix = changes; ix--;)
7285 {
7286 irel = new_relocs + ix + isec->reloc_count;
7287
7288 irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
7289 }
7290 if (internal_relocs != elf_section_data (isec)->relocs)
7291 free (internal_relocs);
7292 elf_section_data (isec)->relocs = new_relocs;
7293 isec->reloc_count += changes;
7294 rel_hdr = _bfd_elf_single_rel_hdr (isec);
7295 rel_hdr->sh_size += changes * rel_hdr->sh_entsize;
7296 }
7297 else if (internal_relocs != NULL
7298 && elf_section_data (isec)->relocs != internal_relocs)
7299 free (internal_relocs);
7300
7301 *again = changes != 0 || workaround_change;
7302 return TRUE;
7303
7304 error_return:
7305 while (branch_fixups != NULL)
7306 {
7307 struct one_branch_fixup *f = branch_fixups;
7308 branch_fixups = branch_fixups->next;
7309 free (f);
7310 }
7311 if (isymbuf != NULL && (unsigned char *) isymbuf != symtab_hdr->contents)
7312 free (isymbuf);
7313 if (contents != NULL
7314 && elf_section_data (isec)->this_hdr.contents != contents)
7315 free (contents);
7316 if (internal_relocs != NULL
7317 && elf_section_data (isec)->relocs != internal_relocs)
7318 free (internal_relocs);
7319 return FALSE;
7320 }
7321 \f
7322 /* What to do when ld finds relocations against symbols defined in
7323 discarded sections. */
7324
7325 static unsigned int
7326 ppc_elf_action_discarded (asection *sec)
7327 {
7328 if (strcmp (".fixup", sec->name) == 0)
7329 return 0;
7330
7331 if (strcmp (".got2", sec->name) == 0)
7332 return 0;
7333
7334 return _bfd_elf_default_action_discarded (sec);
7335 }
7336 \f
7337 /* Fill in the address for a pointer generated in a linker section. */
7338
7339 static bfd_vma
7340 elf_finish_pointer_linker_section (bfd *input_bfd,
7341 elf_linker_section_t *lsect,
7342 struct elf_link_hash_entry *h,
7343 bfd_vma relocation,
7344 const Elf_Internal_Rela *rel)
7345 {
7346 elf_linker_section_pointers_t *linker_section_ptr;
7347
7348 BFD_ASSERT (lsect != NULL);
7349
7350 if (h != NULL)
7351 {
7352 /* Handle global symbol. */
7353 struct ppc_elf_link_hash_entry *eh;
7354
7355 eh = (struct ppc_elf_link_hash_entry *) h;
7356 BFD_ASSERT (eh->elf.def_regular);
7357 linker_section_ptr = eh->linker_section_pointer;
7358 }
7359 else
7360 {
7361 /* Handle local symbol. */
7362 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
7363
7364 BFD_ASSERT (is_ppc_elf (input_bfd));
7365 BFD_ASSERT (elf_local_ptr_offsets (input_bfd) != NULL);
7366 linker_section_ptr = elf_local_ptr_offsets (input_bfd)[r_symndx];
7367 }
7368
7369 linker_section_ptr = elf_find_pointer_linker_section (linker_section_ptr,
7370 rel->r_addend,
7371 lsect);
7372 BFD_ASSERT (linker_section_ptr != NULL);
7373
7374 /* Offset will always be a multiple of four, so use the bottom bit
7375 as a "written" flag. */
7376 if ((linker_section_ptr->offset & 1) == 0)
7377 {
7378 bfd_put_32 (lsect->section->owner,
7379 relocation + linker_section_ptr->addend,
7380 lsect->section->contents + linker_section_ptr->offset);
7381 linker_section_ptr->offset += 1;
7382 }
7383
7384 relocation = (lsect->section->output_section->vma
7385 + lsect->section->output_offset
7386 + linker_section_ptr->offset - 1
7387 - SYM_VAL (lsect->sym));
7388
7389 #ifdef DEBUG
7390 fprintf (stderr,
7391 "Finish pointer in linker section %s, offset = %ld (0x%lx)\n",
7392 lsect->name, (long) relocation, (long) relocation);
7393 #endif
7394
7395 return relocation;
7396 }
7397
7398 #define PPC_LO(v) ((v) & 0xffff)
7399 #define PPC_HI(v) (((v) >> 16) & 0xffff)
7400 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
7401
7402 static void
7403 write_glink_stub (struct plt_entry *ent, asection *plt_sec, unsigned char *p,
7404 struct bfd_link_info *info)
7405 {
7406 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
7407 bfd *output_bfd = info->output_bfd;
7408 bfd_vma plt;
7409
7410 plt = ((ent->plt.offset & ~1)
7411 + plt_sec->output_section->vma
7412 + plt_sec->output_offset);
7413
7414 if (bfd_link_pic (info))
7415 {
7416 bfd_vma got = 0;
7417
7418 if (ent->addend >= 32768)
7419 got = (ent->addend
7420 + ent->sec->output_section->vma
7421 + ent->sec->output_offset);
7422 else if (htab->elf.hgot != NULL)
7423 got = SYM_VAL (htab->elf.hgot);
7424
7425 plt -= got;
7426
7427 if (plt + 0x8000 < 0x10000)
7428 {
7429 bfd_put_32 (output_bfd, LWZ_11_30 + PPC_LO (plt), p);
7430 p += 4;
7431 bfd_put_32 (output_bfd, MTCTR_11, p);
7432 p += 4;
7433 bfd_put_32 (output_bfd, BCTR, p);
7434 p += 4;
7435 bfd_put_32 (output_bfd, htab->params->ppc476_workaround ? BA : NOP, p);
7436 p += 4;
7437 }
7438 else
7439 {
7440 bfd_put_32 (output_bfd, ADDIS_11_30 + PPC_HA (plt), p);
7441 p += 4;
7442 bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
7443 p += 4;
7444 bfd_put_32 (output_bfd, MTCTR_11, p);
7445 p += 4;
7446 bfd_put_32 (output_bfd, BCTR, p);
7447 p += 4;
7448 }
7449 }
7450 else
7451 {
7452 bfd_put_32 (output_bfd, LIS_11 + PPC_HA (plt), p);
7453 p += 4;
7454 bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
7455 p += 4;
7456 bfd_put_32 (output_bfd, MTCTR_11, p);
7457 p += 4;
7458 bfd_put_32 (output_bfd, BCTR, p);
7459 p += 4;
7460 }
7461 }
7462
7463 /* Return true if symbol is defined statically. */
7464
7465 static bfd_boolean
7466 is_static_defined (struct elf_link_hash_entry *h)
7467 {
7468 return ((h->root.type == bfd_link_hash_defined
7469 || h->root.type == bfd_link_hash_defweak)
7470 && h->root.u.def.section != NULL
7471 && h->root.u.def.section->output_section != NULL);
7472 }
7473
7474 /* If INSN is an opcode that may be used with an @tls operand, return
7475 the transformed insn for TLS optimisation, otherwise return 0. If
7476 REG is non-zero only match an insn with RB or RA equal to REG. */
7477
7478 unsigned int
7479 _bfd_elf_ppc_at_tls_transform (unsigned int insn, unsigned int reg)
7480 {
7481 unsigned int rtra;
7482
7483 if ((insn & (0x3f << 26)) != 31 << 26)
7484 return 0;
7485
7486 if (reg == 0 || ((insn >> 11) & 0x1f) == reg)
7487 rtra = insn & ((1 << 26) - (1 << 16));
7488 else if (((insn >> 16) & 0x1f) == reg)
7489 rtra = (insn & (0x1f << 21)) | ((insn & (0x1f << 11)) << 5);
7490 else
7491 return 0;
7492
7493 if ((insn & (0x3ff << 1)) == 266 << 1)
7494 /* add -> addi. */
7495 insn = 14 << 26;
7496 else if ((insn & (0x1f << 1)) == 23 << 1
7497 && ((insn & (0x1f << 6)) < 14 << 6
7498 || ((insn & (0x1f << 6)) >= 16 << 6
7499 && (insn & (0x1f << 6)) < 24 << 6)))
7500 /* load and store indexed -> dform. */
7501 insn = (32 | ((insn >> 6) & 0x1f)) << 26;
7502 else if ((insn & (((0x1a << 5) | 0x1f) << 1)) == 21 << 1)
7503 /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
7504 insn = ((58 | ((insn >> 6) & 4)) << 26) | ((insn >> 6) & 1);
7505 else if ((insn & (((0x1f << 5) | 0x1f) << 1)) == 341 << 1)
7506 /* lwax -> lwa. */
7507 insn = (58 << 26) | 2;
7508 else
7509 return 0;
7510 insn |= rtra;
7511 return insn;
7512 }
7513
7514 /* If INSN is an opcode that may be used with an @tprel operand, return
7515 the transformed insn for an undefined weak symbol, ie. with the
7516 thread pointer REG operand removed. Otherwise return 0. */
7517
7518 unsigned int
7519 _bfd_elf_ppc_at_tprel_transform (unsigned int insn, unsigned int reg)
7520 {
7521 if ((insn & (0x1f << 16)) == reg << 16
7522 && ((insn & (0x3f << 26)) == 14u << 26 /* addi */
7523 || (insn & (0x3f << 26)) == 15u << 26 /* addis */
7524 || (insn & (0x3f << 26)) == 32u << 26 /* lwz */
7525 || (insn & (0x3f << 26)) == 34u << 26 /* lbz */
7526 || (insn & (0x3f << 26)) == 36u << 26 /* stw */
7527 || (insn & (0x3f << 26)) == 38u << 26 /* stb */
7528 || (insn & (0x3f << 26)) == 40u << 26 /* lhz */
7529 || (insn & (0x3f << 26)) == 42u << 26 /* lha */
7530 || (insn & (0x3f << 26)) == 44u << 26 /* sth */
7531 || (insn & (0x3f << 26)) == 46u << 26 /* lmw */
7532 || (insn & (0x3f << 26)) == 47u << 26 /* stmw */
7533 || (insn & (0x3f << 26)) == 48u << 26 /* lfs */
7534 || (insn & (0x3f << 26)) == 50u << 26 /* lfd */
7535 || (insn & (0x3f << 26)) == 52u << 26 /* stfs */
7536 || (insn & (0x3f << 26)) == 54u << 26 /* stfd */
7537 || ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
7538 && (insn & 3) != 1)
7539 || ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */
7540 && ((insn & 3) == 0 || (insn & 3) == 3))))
7541 {
7542 insn &= ~(0x1f << 16);
7543 }
7544 else if ((insn & (0x1f << 21)) == reg << 21
7545 && ((insn & (0x3e << 26)) == 24u << 26 /* ori, oris */
7546 || (insn & (0x3e << 26)) == 26u << 26 /* xori,xoris */
7547 || (insn & (0x3e << 26)) == 28u << 26 /* andi,andis */))
7548 {
7549 insn &= ~(0x1f << 21);
7550 insn |= (insn & (0x1f << 16)) << 5;
7551 if ((insn & (0x3e << 26)) == 26 << 26 /* xori,xoris */)
7552 insn -= 2 >> 26; /* convert to ori,oris */
7553 }
7554 else
7555 insn = 0;
7556 return insn;
7557 }
7558
7559 static bfd_boolean
7560 is_insn_ds_form (unsigned int insn)
7561 {
7562 return ((insn & (0x3f << 26)) == 58u << 26 /* ld,ldu,lwa */
7563 || (insn & (0x3f << 26)) == 62u << 26 /* std,stdu,stq */
7564 || (insn & (0x3f << 26)) == 57u << 26 /* lfdp */
7565 || (insn & (0x3f << 26)) == 61u << 26 /* stfdp */);
7566 }
7567
7568 static bfd_boolean
7569 is_insn_dq_form (unsigned int insn)
7570 {
7571 return ((insn & (0x3f << 26)) == 56u << 26 /* lq */
7572 || ((insn & (0x3f << 26)) == (61u << 26) /* lxv, stxv */
7573 && (insn & 3) == 1));
7574 }
7575
7576 /* The RELOCATE_SECTION function is called by the ELF backend linker
7577 to handle the relocations for a section.
7578
7579 The relocs are always passed as Rela structures; if the section
7580 actually uses Rel structures, the r_addend field will always be
7581 zero.
7582
7583 This function is responsible for adjust the section contents as
7584 necessary, and (if using Rela relocs and generating a
7585 relocatable output file) adjusting the reloc addend as
7586 necessary.
7587
7588 This function does not have to worry about setting the reloc
7589 address or the reloc symbol index.
7590
7591 LOCAL_SYMS is a pointer to the swapped in local symbols.
7592
7593 LOCAL_SECTIONS is an array giving the section in the input file
7594 corresponding to the st_shndx field of each local symbol.
7595
7596 The global hash table entry for the global symbols can be found
7597 via elf_sym_hashes (input_bfd).
7598
7599 When generating relocatable output, this function must handle
7600 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
7601 going to be the section symbol corresponding to the output
7602 section, which means that the addend must be adjusted
7603 accordingly. */
7604
7605 static bfd_boolean
7606 ppc_elf_relocate_section (bfd *output_bfd,
7607 struct bfd_link_info *info,
7608 bfd *input_bfd,
7609 asection *input_section,
7610 bfd_byte *contents,
7611 Elf_Internal_Rela *relocs,
7612 Elf_Internal_Sym *local_syms,
7613 asection **local_sections)
7614 {
7615 Elf_Internal_Shdr *symtab_hdr;
7616 struct elf_link_hash_entry **sym_hashes;
7617 struct ppc_elf_link_hash_table *htab;
7618 Elf_Internal_Rela *rel;
7619 Elf_Internal_Rela *wrel;
7620 Elf_Internal_Rela *relend;
7621 Elf_Internal_Rela outrel;
7622 asection *got2;
7623 bfd_vma *local_got_offsets;
7624 bfd_boolean ret = TRUE;
7625 bfd_vma d_offset = (bfd_big_endian (input_bfd) ? 2 : 0);
7626 bfd_boolean is_vxworks_tls;
7627 unsigned int picfixup_size = 0;
7628 struct ppc_elf_relax_info *relax_info = NULL;
7629
7630 #ifdef DEBUG
7631 _bfd_error_handler ("ppc_elf_relocate_section called for %B section %A, "
7632 "%ld relocations%s",
7633 input_bfd, input_section,
7634 (long) input_section->reloc_count,
7635 (bfd_link_relocatable (info)) ? " (relocatable)" : "");
7636 #endif
7637
7638 got2 = bfd_get_section_by_name (input_bfd, ".got2");
7639
7640 /* Initialize howto table if not already done. */
7641 if (!ppc_elf_howto_table[R_PPC_ADDR32])
7642 ppc_elf_howto_init ();
7643
7644 htab = ppc_elf_hash_table (info);
7645 local_got_offsets = elf_local_got_offsets (input_bfd);
7646 symtab_hdr = &elf_symtab_hdr (input_bfd);
7647 sym_hashes = elf_sym_hashes (input_bfd);
7648 /* We have to handle relocations in vxworks .tls_vars sections
7649 specially, because the dynamic loader is 'weird'. */
7650 is_vxworks_tls = (htab->is_vxworks && bfd_link_pic (info)
7651 && !strcmp (input_section->output_section->name,
7652 ".tls_vars"));
7653 if (input_section->sec_info_type == SEC_INFO_TYPE_TARGET)
7654 relax_info = elf_section_data (input_section)->sec_info;
7655 rel = wrel = relocs;
7656 relend = relocs + input_section->reloc_count;
7657 for (; rel < relend; wrel++, rel++)
7658 {
7659 enum elf_ppc_reloc_type r_type;
7660 bfd_vma addend;
7661 bfd_reloc_status_type r;
7662 Elf_Internal_Sym *sym;
7663 asection *sec;
7664 struct elf_link_hash_entry *h;
7665 const char *sym_name;
7666 reloc_howto_type *howto;
7667 unsigned long r_symndx;
7668 bfd_vma relocation;
7669 bfd_vma branch_bit, from;
7670 bfd_boolean unresolved_reloc;
7671 bfd_boolean warned;
7672 unsigned int tls_type, tls_mask, tls_gd;
7673 struct plt_entry **ifunc;
7674 struct reloc_howto_struct alt_howto;
7675
7676 again:
7677 r_type = ELF32_R_TYPE (rel->r_info);
7678 sym = NULL;
7679 sec = NULL;
7680 h = NULL;
7681 unresolved_reloc = FALSE;
7682 warned = FALSE;
7683 r_symndx = ELF32_R_SYM (rel->r_info);
7684
7685 if (r_symndx < symtab_hdr->sh_info)
7686 {
7687 sym = local_syms + r_symndx;
7688 sec = local_sections[r_symndx];
7689 sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
7690
7691 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
7692 }
7693 else
7694 {
7695 bfd_boolean ignored;
7696
7697 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
7698 r_symndx, symtab_hdr, sym_hashes,
7699 h, sec, relocation,
7700 unresolved_reloc, warned, ignored);
7701
7702 sym_name = h->root.root.string;
7703 }
7704
7705 if (sec != NULL && discarded_section (sec))
7706 {
7707 /* For relocs against symbols from removed linkonce sections,
7708 or sections discarded by a linker script, we just want the
7709 section contents zeroed. Avoid any special processing. */
7710 howto = NULL;
7711 if (r_type < R_PPC_max)
7712 howto = ppc_elf_howto_table[r_type];
7713
7714 _bfd_clear_contents (howto, input_bfd, input_section,
7715 contents + rel->r_offset);
7716 wrel->r_offset = rel->r_offset;
7717 wrel->r_info = 0;
7718 wrel->r_addend = 0;
7719
7720 /* For ld -r, remove relocations in debug sections against
7721 symbols defined in discarded sections. Not done for
7722 non-debug to preserve relocs in .eh_frame which the
7723 eh_frame editing code expects to be present. */
7724 if (bfd_link_relocatable (info)
7725 && (input_section->flags & SEC_DEBUGGING))
7726 wrel--;
7727
7728 continue;
7729 }
7730
7731 if (bfd_link_relocatable (info))
7732 {
7733 if (got2 != NULL
7734 && r_type == R_PPC_PLTREL24
7735 && rel->r_addend != 0)
7736 {
7737 /* R_PPC_PLTREL24 is rather special. If non-zero, the
7738 addend specifies the GOT pointer offset within .got2. */
7739 rel->r_addend += got2->output_offset;
7740 }
7741 if (r_type != R_PPC_RELAX_PLT
7742 && r_type != R_PPC_RELAX_PLTREL24
7743 && r_type != R_PPC_RELAX)
7744 goto copy_reloc;
7745 }
7746
7747 /* TLS optimizations. Replace instruction sequences and relocs
7748 based on information we collected in tls_optimize. We edit
7749 RELOCS so that --emit-relocs will output something sensible
7750 for the final instruction stream. */
7751 tls_mask = 0;
7752 tls_gd = 0;
7753 if (h != NULL)
7754 tls_mask = ((struct ppc_elf_link_hash_entry *) h)->tls_mask;
7755 else if (local_got_offsets != NULL)
7756 {
7757 struct plt_entry **local_plt;
7758 char *lgot_masks;
7759 local_plt
7760 = (struct plt_entry **) (local_got_offsets + symtab_hdr->sh_info);
7761 lgot_masks = (char *) (local_plt + symtab_hdr->sh_info);
7762 tls_mask = lgot_masks[r_symndx];
7763 }
7764
7765 /* Ensure reloc mapping code below stays sane. */
7766 if ((R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TLSGD16 & 3)
7767 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TLSGD16_LO & 3)
7768 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TLSGD16_HI & 3)
7769 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TLSGD16_HA & 3)
7770 || (R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TPREL16 & 3)
7771 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TPREL16_LO & 3)
7772 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TPREL16_HI & 3)
7773 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TPREL16_HA & 3))
7774 abort ();
7775 switch (r_type)
7776 {
7777 default:
7778 break;
7779
7780 case R_PPC_GOT_TPREL16:
7781 case R_PPC_GOT_TPREL16_LO:
7782 if ((tls_mask & TLS_TLS) != 0
7783 && (tls_mask & TLS_TPREL) == 0)
7784 {
7785 bfd_vma insn;
7786
7787 insn = bfd_get_32 (input_bfd,
7788 contents + rel->r_offset - d_offset);
7789 insn &= 31 << 21;
7790 insn |= 0x3c020000; /* addis 0,2,0 */
7791 bfd_put_32 (input_bfd, insn,
7792 contents + rel->r_offset - d_offset);
7793 r_type = R_PPC_TPREL16_HA;
7794 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7795 }
7796 break;
7797
7798 case R_PPC_TLS:
7799 if ((tls_mask & TLS_TLS) != 0
7800 && (tls_mask & TLS_TPREL) == 0)
7801 {
7802 bfd_vma insn;
7803
7804 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
7805 insn = _bfd_elf_ppc_at_tls_transform (insn, 2);
7806 if (insn == 0)
7807 abort ();
7808 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
7809 r_type = R_PPC_TPREL16_LO;
7810 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7811
7812 /* Was PPC_TLS which sits on insn boundary, now
7813 PPC_TPREL16_LO which is at low-order half-word. */
7814 rel->r_offset += d_offset;
7815 }
7816 break;
7817
7818 case R_PPC_GOT_TLSGD16_HI:
7819 case R_PPC_GOT_TLSGD16_HA:
7820 tls_gd = TLS_TPRELGD;
7821 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
7822 goto tls_gdld_hi;
7823 break;
7824
7825 case R_PPC_GOT_TLSLD16_HI:
7826 case R_PPC_GOT_TLSLD16_HA:
7827 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
7828 {
7829 tls_gdld_hi:
7830 if ((tls_mask & tls_gd) != 0)
7831 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
7832 + R_PPC_GOT_TPREL16);
7833 else
7834 {
7835 rel->r_offset -= d_offset;
7836 bfd_put_32 (input_bfd, NOP, contents + rel->r_offset);
7837 r_type = R_PPC_NONE;
7838 }
7839 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7840 }
7841 break;
7842
7843 case R_PPC_GOT_TLSGD16:
7844 case R_PPC_GOT_TLSGD16_LO:
7845 tls_gd = TLS_TPRELGD;
7846 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
7847 goto tls_ldgd_opt;
7848 break;
7849
7850 case R_PPC_GOT_TLSLD16:
7851 case R_PPC_GOT_TLSLD16_LO:
7852 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
7853 {
7854 unsigned int insn1, insn2;
7855 bfd_vma offset;
7856
7857 tls_ldgd_opt:
7858 offset = (bfd_vma) -1;
7859 /* If not using the newer R_PPC_TLSGD/LD to mark
7860 __tls_get_addr calls, we must trust that the call
7861 stays with its arg setup insns, ie. that the next
7862 reloc is the __tls_get_addr call associated with
7863 the current reloc. Edit both insns. */
7864 if (input_section->has_tls_get_addr_call
7865 && rel + 1 < relend
7866 && branch_reloc_hash_match (input_bfd, rel + 1,
7867 htab->tls_get_addr))
7868 offset = rel[1].r_offset;
7869 /* We read the low GOT_TLS insn because we need to keep
7870 the destination reg. It may be something other than
7871 the usual r3, and moved to r3 before the call by
7872 intervening code. */
7873 insn1 = bfd_get_32 (input_bfd,
7874 contents + rel->r_offset - d_offset);
7875 if ((tls_mask & tls_gd) != 0)
7876 {
7877 /* IE */
7878 insn1 &= (0x1f << 21) | (0x1f << 16);
7879 insn1 |= 32 << 26; /* lwz */
7880 if (offset != (bfd_vma) -1)
7881 {
7882 rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
7883 insn2 = 0x7c631214; /* add 3,3,2 */
7884 bfd_put_32 (input_bfd, insn2, contents + offset);
7885 }
7886 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
7887 + R_PPC_GOT_TPREL16);
7888 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7889 }
7890 else
7891 {
7892 /* LE */
7893 insn1 &= 0x1f << 21;
7894 insn1 |= 0x3c020000; /* addis r,2,0 */
7895 if (tls_gd == 0)
7896 {
7897 /* Was an LD reloc. */
7898 for (r_symndx = 0;
7899 r_symndx < symtab_hdr->sh_info;
7900 r_symndx++)
7901 if (local_sections[r_symndx] == sec)
7902 break;
7903 if (r_symndx >= symtab_hdr->sh_info)
7904 r_symndx = STN_UNDEF;
7905 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
7906 if (r_symndx != STN_UNDEF)
7907 rel->r_addend -= (local_syms[r_symndx].st_value
7908 + sec->output_offset
7909 + sec->output_section->vma);
7910 }
7911 r_type = R_PPC_TPREL16_HA;
7912 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7913 if (offset != (bfd_vma) -1)
7914 {
7915 rel[1].r_info = ELF32_R_INFO (r_symndx, R_PPC_TPREL16_LO);
7916 rel[1].r_offset = offset + d_offset;
7917 rel[1].r_addend = rel->r_addend;
7918 insn2 = 0x38630000; /* addi 3,3,0 */
7919 bfd_put_32 (input_bfd, insn2, contents + offset);
7920 }
7921 }
7922 bfd_put_32 (input_bfd, insn1,
7923 contents + rel->r_offset - d_offset);
7924 if (tls_gd == 0)
7925 {
7926 /* We changed the symbol on an LD reloc. Start over
7927 in order to get h, sym, sec etc. right. */
7928 goto again;
7929 }
7930 }
7931 break;
7932
7933 case R_PPC_TLSGD:
7934 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
7935 {
7936 unsigned int insn2;
7937 bfd_vma offset = rel->r_offset;
7938
7939 if ((tls_mask & TLS_TPRELGD) != 0)
7940 {
7941 /* IE */
7942 r_type = R_PPC_NONE;
7943 insn2 = 0x7c631214; /* add 3,3,2 */
7944 }
7945 else
7946 {
7947 /* LE */
7948 r_type = R_PPC_TPREL16_LO;
7949 rel->r_offset += d_offset;
7950 insn2 = 0x38630000; /* addi 3,3,0 */
7951 }
7952 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7953 bfd_put_32 (input_bfd, insn2, contents + offset);
7954 /* Zap the reloc on the _tls_get_addr call too. */
7955 BFD_ASSERT (offset == rel[1].r_offset);
7956 rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
7957 }
7958 break;
7959
7960 case R_PPC_TLSLD:
7961 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
7962 {
7963 unsigned int insn2;
7964
7965 for (r_symndx = 0;
7966 r_symndx < symtab_hdr->sh_info;
7967 r_symndx++)
7968 if (local_sections[r_symndx] == sec)
7969 break;
7970 if (r_symndx >= symtab_hdr->sh_info)
7971 r_symndx = STN_UNDEF;
7972 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
7973 if (r_symndx != STN_UNDEF)
7974 rel->r_addend -= (local_syms[r_symndx].st_value
7975 + sec->output_offset
7976 + sec->output_section->vma);
7977
7978 rel->r_info = ELF32_R_INFO (r_symndx, R_PPC_TPREL16_LO);
7979 rel->r_offset += d_offset;
7980 insn2 = 0x38630000; /* addi 3,3,0 */
7981 bfd_put_32 (input_bfd, insn2,
7982 contents + rel->r_offset - d_offset);
7983 /* Zap the reloc on the _tls_get_addr call too. */
7984 BFD_ASSERT (rel->r_offset - d_offset == rel[1].r_offset);
7985 rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
7986 goto again;
7987 }
7988 break;
7989 }
7990
7991 /* Handle other relocations that tweak non-addend part of insn. */
7992 branch_bit = 0;
7993 switch (r_type)
7994 {
7995 default:
7996 break;
7997
7998 /* Branch taken prediction relocations. */
7999 case R_PPC_ADDR14_BRTAKEN:
8000 case R_PPC_REL14_BRTAKEN:
8001 branch_bit = BRANCH_PREDICT_BIT;
8002 /* Fall through. */
8003
8004 /* Branch not taken prediction relocations. */
8005 case R_PPC_ADDR14_BRNTAKEN:
8006 case R_PPC_REL14_BRNTAKEN:
8007 {
8008 bfd_vma insn;
8009
8010 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
8011 insn &= ~BRANCH_PREDICT_BIT;
8012 insn |= branch_bit;
8013
8014 from = (rel->r_offset
8015 + input_section->output_offset
8016 + input_section->output_section->vma);
8017
8018 /* Invert 'y' bit if not the default. */
8019 if ((bfd_signed_vma) (relocation + rel->r_addend - from) < 0)
8020 insn ^= BRANCH_PREDICT_BIT;
8021
8022 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
8023 break;
8024 }
8025 }
8026
8027 if (ELIMINATE_COPY_RELOCS
8028 && h != NULL
8029 && !h->def_regular
8030 && h->protected_def
8031 && ppc_elf_hash_entry (h)->has_addr16_ha
8032 && ppc_elf_hash_entry (h)->has_addr16_lo
8033 && htab->params->pic_fixup > 0)
8034 {
8035 /* Convert lis;addi or lis;load/store accessing a protected
8036 variable defined in a shared library to PIC. */
8037 unsigned int insn;
8038
8039 if (r_type == R_PPC_ADDR16_HA)
8040 {
8041 insn = bfd_get_32 (input_bfd,
8042 contents + rel->r_offset - d_offset);
8043 if ((insn & (0x3f << 26)) == (15u << 26)
8044 && (insn & (0x1f << 16)) == 0 /* lis */)
8045 {
8046 bfd_byte *p;
8047 bfd_vma off;
8048 bfd_vma got_addr;
8049
8050 p = (contents + input_section->size
8051 - relax_info->workaround_size
8052 - relax_info->picfixup_size
8053 + picfixup_size);
8054 off = (p - contents) - (rel->r_offset - d_offset);
8055 if (off > 0x1fffffc || (off & 3) != 0)
8056 info->callbacks->einfo
8057 (_("%H: fixup branch overflow\n"),
8058 input_bfd, input_section, rel->r_offset);
8059
8060 bfd_put_32 (input_bfd, B | off,
8061 contents + rel->r_offset - d_offset);
8062 got_addr = (htab->elf.sgot->output_section->vma
8063 + htab->elf.sgot->output_offset
8064 + (h->got.offset & ~1));
8065 wrel->r_offset = (p - contents) + d_offset;
8066 wrel->r_info = ELF32_R_INFO (0, R_PPC_ADDR16_HA);
8067 wrel->r_addend = got_addr;
8068 insn &= ~0xffff;
8069 insn |= ((unsigned int) (got_addr + 0x8000) >> 16) & 0xffff;
8070 bfd_put_32 (input_bfd, insn, p);
8071
8072 /* Convert lis to lwz, loading address from GOT. */
8073 insn &= ~0xffff;
8074 insn ^= (32u ^ 15u) << 26;
8075 insn |= (insn & (0x1f << 21)) >> 5;
8076 insn |= got_addr & 0xffff;
8077 bfd_put_32 (input_bfd, insn, p + 4);
8078
8079 bfd_put_32 (input_bfd, B | ((-4 - off) & 0x3ffffff), p + 8);
8080 picfixup_size += 12;
8081
8082 /* Use one of the spare relocs, so --emit-relocs
8083 output is reasonable. */
8084 memmove (rel + 1, rel, (relend - rel - 1) * sizeof (*rel));
8085 wrel++, rel++;
8086 rel->r_offset = wrel[-1].r_offset + 4;
8087 rel->r_info = ELF32_R_INFO (0, R_PPC_ADDR16_LO);
8088 rel->r_addend = wrel[-1].r_addend;
8089
8090 /* Continue on as if we had a got reloc, to output
8091 dynamic reloc. */
8092 r_type = R_PPC_GOT16_LO;
8093 }
8094 else
8095 _bfd_error_handler
8096 /* xgettext:c-format */
8097 (_("%B(%A+%#Lx): error: %s with unexpected instruction %#x"),
8098 input_bfd, input_section, rel->r_offset,
8099 "R_PPC_ADDR16_HA", insn);
8100 }
8101 else if (r_type == R_PPC_ADDR16_LO)
8102 {
8103 insn = bfd_get_32 (input_bfd,
8104 contents + rel->r_offset - d_offset);
8105 if ((insn & (0x3f << 26)) == 14u << 26 /* addi */
8106 || (insn & (0x3f << 26)) == 32u << 26 /* lwz */
8107 || (insn & (0x3f << 26)) == 34u << 26 /* lbz */
8108 || (insn & (0x3f << 26)) == 36u << 26 /* stw */
8109 || (insn & (0x3f << 26)) == 38u << 26 /* stb */
8110 || (insn & (0x3f << 26)) == 40u << 26 /* lhz */
8111 || (insn & (0x3f << 26)) == 42u << 26 /* lha */
8112 || (insn & (0x3f << 26)) == 44u << 26 /* sth */
8113 || (insn & (0x3f << 26)) == 46u << 26 /* lmw */
8114 || (insn & (0x3f << 26)) == 47u << 26 /* stmw */
8115 || (insn & (0x3f << 26)) == 48u << 26 /* lfs */
8116 || (insn & (0x3f << 26)) == 50u << 26 /* lfd */
8117 || (insn & (0x3f << 26)) == 52u << 26 /* stfs */
8118 || (insn & (0x3f << 26)) == 54u << 26 /* stfd */
8119 || ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
8120 && (insn & 3) != 1)
8121 || ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */
8122 && ((insn & 3) == 0 || (insn & 3) == 3)))
8123 {
8124 /* Arrange to apply the reloc addend, if any. */
8125 relocation = 0;
8126 unresolved_reloc = FALSE;
8127 rel->r_info = ELF32_R_INFO (0, r_type);
8128 }
8129 else
8130 _bfd_error_handler
8131 /* xgettext:c-format */
8132 (_("%B(%A+%#Lx): error: %s with unexpected instruction %#x"),
8133 input_bfd, input_section, rel->r_offset,
8134 "R_PPC_ADDR16_LO", insn);
8135 }
8136 }
8137
8138 ifunc = NULL;
8139 if (!htab->is_vxworks)
8140 {
8141 struct plt_entry *ent;
8142
8143 if (h != NULL)
8144 {
8145 if (h->type == STT_GNU_IFUNC)
8146 ifunc = &h->plt.plist;
8147 }
8148 else if (local_got_offsets != NULL
8149 && ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
8150 {
8151 struct plt_entry **local_plt;
8152
8153 local_plt = (struct plt_entry **) (local_got_offsets
8154 + symtab_hdr->sh_info);
8155 ifunc = local_plt + r_symndx;
8156 }
8157
8158 ent = NULL;
8159 if (ifunc != NULL
8160 && (!bfd_link_pic (info)
8161 || is_branch_reloc (r_type)))
8162 {
8163 addend = 0;
8164 if (r_type == R_PPC_PLTREL24 && bfd_link_pic (info))
8165 addend = rel->r_addend;
8166 ent = find_plt_ent (ifunc, got2, addend);
8167 }
8168 if (ent != NULL)
8169 {
8170 if (bfd_link_pic (info)
8171 && ent->sec != got2
8172 && htab->plt_type != PLT_NEW
8173 && (!htab->elf.dynamic_sections_created
8174 || h == NULL
8175 || h->dynindx == -1))
8176 {
8177 /* Uh oh, we are going to create a pic glink stub
8178 for an ifunc (here for h == NULL and later in
8179 finish_dynamic_symbol for h != NULL), and
8180 apparently are using code compiled with
8181 -mbss-plt. The difficulty is that -mbss-plt code
8182 gives no indication via a magic PLTREL24 addend
8183 whether r30 is equal to _GLOBAL_OFFSET_TABLE_ or
8184 is pointing into a .got2 section (and how far
8185 into .got2). */
8186 info->callbacks->einfo
8187 /* xgettext:c-format */
8188 (_("%X%H: unsupported bss-plt -fPIC ifunc %s\n"),
8189 input_bfd, input_section, rel->r_offset, sym_name);
8190 }
8191 if (h == NULL && (ent->plt.offset & 1) == 0)
8192 {
8193 Elf_Internal_Rela rela;
8194 bfd_byte *loc;
8195
8196 rela.r_offset = (htab->elf.iplt->output_section->vma
8197 + htab->elf.iplt->output_offset
8198 + ent->plt.offset);
8199 rela.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
8200 rela.r_addend = relocation;
8201 loc = htab->elf.irelplt->contents;
8202 loc += (htab->elf.irelplt->reloc_count++
8203 * sizeof (Elf32_External_Rela));
8204 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
8205 htab->local_ifunc_resolver = 1;
8206
8207 ent->plt.offset |= 1;
8208 }
8209 if (h == NULL && (ent->glink_offset & 1) == 0)
8210 {
8211 unsigned char *p = ((unsigned char *) htab->glink->contents
8212 + ent->glink_offset);
8213 write_glink_stub (ent, htab->elf.iplt, p, info);
8214 ent->glink_offset |= 1;
8215 }
8216
8217 unresolved_reloc = FALSE;
8218 if (htab->plt_type == PLT_NEW
8219 || !htab->elf.dynamic_sections_created
8220 || h == NULL
8221 || h->dynindx == -1)
8222 relocation = (htab->glink->output_section->vma
8223 + htab->glink->output_offset
8224 + (ent->glink_offset & ~1));
8225 else
8226 relocation = (htab->elf.splt->output_section->vma
8227 + htab->elf.splt->output_offset
8228 + ent->plt.offset);
8229 }
8230 }
8231
8232 addend = rel->r_addend;
8233 howto = NULL;
8234 if (r_type < R_PPC_max)
8235 howto = ppc_elf_howto_table[r_type];
8236
8237 switch (r_type)
8238 {
8239 default:
8240 break;
8241
8242 case R_PPC_TPREL16_HA:
8243 if (htab->do_tls_opt && relocation + addend + 0x8000 < 0x10000)
8244 {
8245 bfd_byte *p = contents + (rel->r_offset & ~3);
8246 unsigned int insn = bfd_get_32 (input_bfd, p);
8247 if ((insn & ((0x3f << 26) | 0x1f << 16))
8248 != ((15u << 26) | (2 << 16)) /* addis rt,2,imm */)
8249 /* xgettext:c-format */
8250 info->callbacks->minfo
8251 (_("%H: warning: %s unexpected insn %#x.\n"),
8252 input_bfd, input_section, rel->r_offset, howto->name, insn);
8253 else
8254 bfd_put_32 (input_bfd, NOP, p);
8255 }
8256 break;
8257
8258 case R_PPC_TPREL16_LO:
8259 if (htab->do_tls_opt && relocation + addend + 0x8000 < 0x10000)
8260 {
8261 bfd_byte *p = contents + (rel->r_offset & ~3);
8262 unsigned int insn = bfd_get_32 (input_bfd, p);
8263 insn &= ~(0x1f << 16);
8264 insn |= 2 << 16;
8265 bfd_put_32 (input_bfd, insn, p);
8266 }
8267 break;
8268 }
8269
8270 tls_type = 0;
8271 switch (r_type)
8272 {
8273 default:
8274 info->callbacks->einfo
8275 /* xgettext:c-format */
8276 (_("%P: %B: unknown relocation type %d for symbol %s\n"),
8277 input_bfd, (int) r_type, sym_name);
8278
8279 bfd_set_error (bfd_error_bad_value);
8280 ret = FALSE;
8281 goto copy_reloc;
8282
8283 case R_PPC_NONE:
8284 case R_PPC_TLS:
8285 case R_PPC_TLSGD:
8286 case R_PPC_TLSLD:
8287 case R_PPC_EMB_MRKREF:
8288 case R_PPC_GNU_VTINHERIT:
8289 case R_PPC_GNU_VTENTRY:
8290 goto copy_reloc;
8291
8292 /* GOT16 relocations. Like an ADDR16 using the symbol's
8293 address in the GOT as relocation value instead of the
8294 symbol's value itself. Also, create a GOT entry for the
8295 symbol and put the symbol value there. */
8296 case R_PPC_GOT_TLSGD16:
8297 case R_PPC_GOT_TLSGD16_LO:
8298 case R_PPC_GOT_TLSGD16_HI:
8299 case R_PPC_GOT_TLSGD16_HA:
8300 tls_type = TLS_TLS | TLS_GD;
8301 goto dogot;
8302
8303 case R_PPC_GOT_TLSLD16:
8304 case R_PPC_GOT_TLSLD16_LO:
8305 case R_PPC_GOT_TLSLD16_HI:
8306 case R_PPC_GOT_TLSLD16_HA:
8307 tls_type = TLS_TLS | TLS_LD;
8308 goto dogot;
8309
8310 case R_PPC_GOT_TPREL16:
8311 case R_PPC_GOT_TPREL16_LO:
8312 case R_PPC_GOT_TPREL16_HI:
8313 case R_PPC_GOT_TPREL16_HA:
8314 tls_type = TLS_TLS | TLS_TPREL;
8315 goto dogot;
8316
8317 case R_PPC_GOT_DTPREL16:
8318 case R_PPC_GOT_DTPREL16_LO:
8319 case R_PPC_GOT_DTPREL16_HI:
8320 case R_PPC_GOT_DTPREL16_HA:
8321 tls_type = TLS_TLS | TLS_DTPREL;
8322 goto dogot;
8323
8324 case R_PPC_GOT16:
8325 case R_PPC_GOT16_LO:
8326 case R_PPC_GOT16_HI:
8327 case R_PPC_GOT16_HA:
8328 tls_mask = 0;
8329 dogot:
8330 {
8331 /* Relocation is to the entry for this symbol in the global
8332 offset table. */
8333 bfd_vma off;
8334 bfd_vma *offp;
8335 unsigned long indx;
8336
8337 if (htab->elf.sgot == NULL)
8338 abort ();
8339
8340 indx = 0;
8341 if (tls_type == (TLS_TLS | TLS_LD)
8342 && (h == NULL
8343 || !h->def_dynamic))
8344 offp = &htab->tlsld_got.offset;
8345 else if (h != NULL)
8346 {
8347 if (!htab->elf.dynamic_sections_created
8348 || h->dynindx == -1
8349 || SYMBOL_REFERENCES_LOCAL (info, h)
8350 || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h))
8351 /* This is actually a static link, or it is a
8352 -Bsymbolic link and the symbol is defined
8353 locally, or the symbol was forced to be local
8354 because of a version file. */
8355 ;
8356 else
8357 {
8358 indx = h->dynindx;
8359 unresolved_reloc = FALSE;
8360 }
8361 offp = &h->got.offset;
8362 }
8363 else
8364 {
8365 if (local_got_offsets == NULL)
8366 abort ();
8367 offp = &local_got_offsets[r_symndx];
8368 }
8369
8370 /* The offset must always be a multiple of 4. We use the
8371 least significant bit to record whether we have already
8372 processed this entry. */
8373 off = *offp;
8374 if ((off & 1) != 0)
8375 off &= ~1;
8376 else
8377 {
8378 unsigned int tls_m = (tls_mask
8379 & (TLS_LD | TLS_GD | TLS_DTPREL
8380 | TLS_TPREL | TLS_TPRELGD));
8381
8382 if (offp == &htab->tlsld_got.offset)
8383 tls_m = TLS_LD;
8384 else if (h == NULL
8385 || !h->def_dynamic)
8386 tls_m &= ~TLS_LD;
8387
8388 /* We might have multiple got entries for this sym.
8389 Initialize them all. */
8390 do
8391 {
8392 int tls_ty = 0;
8393
8394 if ((tls_m & TLS_LD) != 0)
8395 {
8396 tls_ty = TLS_TLS | TLS_LD;
8397 tls_m &= ~TLS_LD;
8398 }
8399 else if ((tls_m & TLS_GD) != 0)
8400 {
8401 tls_ty = TLS_TLS | TLS_GD;
8402 tls_m &= ~TLS_GD;
8403 }
8404 else if ((tls_m & TLS_DTPREL) != 0)
8405 {
8406 tls_ty = TLS_TLS | TLS_DTPREL;
8407 tls_m &= ~TLS_DTPREL;
8408 }
8409 else if ((tls_m & (TLS_TPREL | TLS_TPRELGD)) != 0)
8410 {
8411 tls_ty = TLS_TLS | TLS_TPREL;
8412 tls_m = 0;
8413 }
8414
8415 /* Generate relocs for the dynamic linker. */
8416 if (indx != 0
8417 || (bfd_link_pic (info)
8418 && (h == NULL
8419 || !UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)
8420 || offp == &htab->tlsld_got.offset)))
8421 {
8422 asection *rsec = htab->elf.srelgot;
8423 bfd_byte * loc;
8424
8425 if (ifunc != NULL)
8426 {
8427 rsec = htab->elf.irelplt;
8428 if (indx == 0)
8429 htab->local_ifunc_resolver = 1;
8430 else if (is_static_defined (h))
8431 htab->maybe_local_ifunc_resolver = 1;
8432 }
8433 outrel.r_offset = (htab->elf.sgot->output_section->vma
8434 + htab->elf.sgot->output_offset
8435 + off);
8436 outrel.r_addend = 0;
8437 if (tls_ty & (TLS_LD | TLS_GD))
8438 {
8439 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPMOD32);
8440 if (tls_ty == (TLS_TLS | TLS_GD))
8441 {
8442 loc = rsec->contents;
8443 loc += (rsec->reloc_count++
8444 * sizeof (Elf32_External_Rela));
8445 bfd_elf32_swap_reloca_out (output_bfd,
8446 &outrel, loc);
8447 outrel.r_offset += 4;
8448 outrel.r_info
8449 = ELF32_R_INFO (indx, R_PPC_DTPREL32);
8450 }
8451 }
8452 else if (tls_ty == (TLS_TLS | TLS_DTPREL))
8453 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPREL32);
8454 else if (tls_ty == (TLS_TLS | TLS_TPREL))
8455 outrel.r_info = ELF32_R_INFO (indx, R_PPC_TPREL32);
8456 else if (indx != 0)
8457 outrel.r_info = ELF32_R_INFO (indx, R_PPC_GLOB_DAT);
8458 else if (ifunc != NULL)
8459 outrel.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
8460 else
8461 outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
8462 if (indx == 0 && tls_ty != (TLS_TLS | TLS_LD))
8463 {
8464 outrel.r_addend += relocation;
8465 if (tls_ty & (TLS_GD | TLS_DTPREL | TLS_TPREL))
8466 {
8467 if (htab->elf.tls_sec == NULL)
8468 outrel.r_addend = 0;
8469 else
8470 outrel.r_addend -= htab->elf.tls_sec->vma;
8471 }
8472 }
8473 loc = rsec->contents;
8474 loc += (rsec->reloc_count++
8475 * sizeof (Elf32_External_Rela));
8476 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
8477 }
8478
8479 /* Init the .got section contents if we're not
8480 emitting a reloc. */
8481 else
8482 {
8483 bfd_vma value = relocation;
8484
8485 if (tls_ty != 0)
8486 {
8487 if (htab->elf.tls_sec == NULL)
8488 value = 0;
8489 else
8490 {
8491 if (tls_ty & TLS_LD)
8492 value = 0;
8493 else
8494 value -= htab->elf.tls_sec->vma + DTP_OFFSET;
8495 if (tls_ty & TLS_TPREL)
8496 value += DTP_OFFSET - TP_OFFSET;
8497 }
8498
8499 if (tls_ty & (TLS_LD | TLS_GD))
8500 {
8501 bfd_put_32 (input_bfd, value,
8502 htab->elf.sgot->contents + off + 4);
8503 value = 1;
8504 }
8505 }
8506 bfd_put_32 (input_bfd, value,
8507 htab->elf.sgot->contents + off);
8508 }
8509
8510 off += 4;
8511 if (tls_ty & (TLS_LD | TLS_GD))
8512 off += 4;
8513 }
8514 while (tls_m != 0);
8515
8516 off = *offp;
8517 *offp = off | 1;
8518 }
8519
8520 if (off >= (bfd_vma) -2)
8521 abort ();
8522
8523 if ((tls_type & TLS_TLS) != 0)
8524 {
8525 if (tls_type != (TLS_TLS | TLS_LD))
8526 {
8527 if ((tls_mask & TLS_LD) != 0
8528 && !(h == NULL
8529 || !h->def_dynamic))
8530 off += 8;
8531 if (tls_type != (TLS_TLS | TLS_GD))
8532 {
8533 if ((tls_mask & TLS_GD) != 0)
8534 off += 8;
8535 if (tls_type != (TLS_TLS | TLS_DTPREL))
8536 {
8537 if ((tls_mask & TLS_DTPREL) != 0)
8538 off += 4;
8539 }
8540 }
8541 }
8542 }
8543
8544 /* If here for a picfixup, we're done. */
8545 if (r_type != ELF32_R_TYPE (rel->r_info))
8546 goto copy_reloc;
8547
8548 relocation = (htab->elf.sgot->output_section->vma
8549 + htab->elf.sgot->output_offset
8550 + off
8551 - SYM_VAL (htab->elf.hgot));
8552
8553 /* Addends on got relocations don't make much sense.
8554 x+off@got is actually x@got+off, and since the got is
8555 generated by a hash table traversal, the value in the
8556 got at entry m+n bears little relation to the entry m. */
8557 if (addend != 0)
8558 info->callbacks->einfo
8559 /* xgettext:c-format */
8560 (_("%H: non-zero addend on %s reloc against `%s'\n"),
8561 input_bfd, input_section, rel->r_offset,
8562 howto->name,
8563 sym_name);
8564 }
8565 break;
8566
8567 /* Relocations that need no special processing. */
8568 case R_PPC_LOCAL24PC:
8569 /* It makes no sense to point a local relocation
8570 at a symbol not in this object. */
8571 if (unresolved_reloc)
8572 {
8573 (*info->callbacks->undefined_symbol) (info,
8574 h->root.root.string,
8575 input_bfd,
8576 input_section,
8577 rel->r_offset,
8578 TRUE);
8579 goto copy_reloc;
8580 }
8581 if (h != NULL && h->type == STT_GNU_IFUNC && bfd_link_pic (info))
8582 {
8583 /* @local on an ifunc does not really make sense since
8584 the ifunc resolver can take you anywhere. More
8585 seriously, calls to ifuncs must go through a plt call
8586 stub, and for pic the plt call stubs uses r30 to
8587 access the PLT. The problem is that a call that is
8588 local won't have the +32k reloc addend trick marking
8589 -fPIC code, so the linker won't know whether r30 is
8590 _GLOBAL_OFFSET_TABLE_ or pointing into a .got2 section. */
8591 /* xgettext:c-format */
8592 info->callbacks->einfo (_("%X%H: @local call to ifunc %s\n"),
8593 input_bfd, input_section, rel->r_offset,
8594 h->root.root.string);
8595 }
8596 break;
8597
8598 case R_PPC_DTPREL16:
8599 case R_PPC_DTPREL16_LO:
8600 case R_PPC_DTPREL16_HI:
8601 case R_PPC_DTPREL16_HA:
8602 if (htab->elf.tls_sec != NULL)
8603 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
8604 break;
8605
8606 /* Relocations that may need to be propagated if this is a shared
8607 object. */
8608 case R_PPC_TPREL16:
8609 case R_PPC_TPREL16_LO:
8610 case R_PPC_TPREL16_HI:
8611 case R_PPC_TPREL16_HA:
8612 if (h != NULL
8613 && h->root.type == bfd_link_hash_undefweak
8614 && h->dynindx == -1)
8615 {
8616 /* Make this relocation against an undefined weak symbol
8617 resolve to zero. This is really just a tweak, since
8618 code using weak externs ought to check that they are
8619 defined before using them. */
8620 bfd_byte *p = contents + rel->r_offset - d_offset;
8621 unsigned int insn = bfd_get_32 (input_bfd, p);
8622 insn = _bfd_elf_ppc_at_tprel_transform (insn, 2);
8623 if (insn != 0)
8624 bfd_put_32 (input_bfd, insn, p);
8625 break;
8626 }
8627 if (htab->elf.tls_sec != NULL)
8628 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
8629 /* The TPREL16 relocs shouldn't really be used in shared
8630 libs or with non-local symbols as that will result in
8631 DT_TEXTREL being set, but support them anyway. */
8632 goto dodyn;
8633
8634 case R_PPC_TPREL32:
8635 if (htab->elf.tls_sec != NULL)
8636 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
8637 goto dodyn;
8638
8639 case R_PPC_DTPREL32:
8640 if (htab->elf.tls_sec != NULL)
8641 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
8642 goto dodyn;
8643
8644 case R_PPC_DTPMOD32:
8645 relocation = 1;
8646 addend = 0;
8647 goto dodyn;
8648
8649 case R_PPC_REL16:
8650 case R_PPC_REL16_LO:
8651 case R_PPC_REL16_HI:
8652 case R_PPC_REL16_HA:
8653 case R_PPC_REL16DX_HA:
8654 break;
8655
8656 case R_PPC_REL32:
8657 if (h == NULL || h == htab->elf.hgot)
8658 break;
8659 /* fall through */
8660
8661 case R_PPC_ADDR32:
8662 case R_PPC_ADDR16:
8663 case R_PPC_ADDR16_LO:
8664 case R_PPC_ADDR16_HI:
8665 case R_PPC_ADDR16_HA:
8666 case R_PPC_UADDR32:
8667 case R_PPC_UADDR16:
8668 goto dodyn;
8669
8670 case R_PPC_VLE_REL8:
8671 case R_PPC_VLE_REL15:
8672 case R_PPC_VLE_REL24:
8673 case R_PPC_REL24:
8674 case R_PPC_REL14:
8675 case R_PPC_REL14_BRTAKEN:
8676 case R_PPC_REL14_BRNTAKEN:
8677 /* If these relocations are not to a named symbol, they can be
8678 handled right here, no need to bother the dynamic linker. */
8679 if (SYMBOL_CALLS_LOCAL (info, h)
8680 || h == htab->elf.hgot)
8681 break;
8682 /* fall through */
8683
8684 case R_PPC_ADDR24:
8685 case R_PPC_ADDR14:
8686 case R_PPC_ADDR14_BRTAKEN:
8687 case R_PPC_ADDR14_BRNTAKEN:
8688 if (h != NULL && !bfd_link_pic (info))
8689 break;
8690 /* fall through */
8691
8692 dodyn:
8693 if ((input_section->flags & SEC_ALLOC) == 0
8694 || is_vxworks_tls)
8695 break;
8696
8697 if ((bfd_link_pic (info)
8698 && !(h != NULL
8699 && ((h->root.type == bfd_link_hash_undefined
8700 && ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
8701 || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)))
8702 && (must_be_dyn_reloc (info, r_type)
8703 || !SYMBOL_CALLS_LOCAL (info, h)))
8704 || (ELIMINATE_COPY_RELOCS
8705 && !bfd_link_pic (info)
8706 && h != NULL
8707 && h->dynindx != -1
8708 && !h->non_got_ref
8709 && !h->def_regular
8710 && !(h->protected_def
8711 && ppc_elf_hash_entry (h)->has_addr16_ha
8712 && ppc_elf_hash_entry (h)->has_addr16_lo
8713 && htab->params->pic_fixup > 0)))
8714 {
8715 int skip;
8716 bfd_byte *loc;
8717 asection *sreloc;
8718 long indx = 0;
8719
8720 #ifdef DEBUG
8721 fprintf (stderr, "ppc_elf_relocate_section needs to "
8722 "create relocation for %s\n",
8723 (h && h->root.root.string
8724 ? h->root.root.string : "<unknown>"));
8725 #endif
8726
8727 /* When generating a shared object, these relocations
8728 are copied into the output file to be resolved at run
8729 time. */
8730 skip = 0;
8731 outrel.r_offset = _bfd_elf_section_offset (output_bfd, info,
8732 input_section,
8733 rel->r_offset);
8734 if (outrel.r_offset == (bfd_vma) -1
8735 || outrel.r_offset == (bfd_vma) -2)
8736 skip = (int) outrel.r_offset;
8737 outrel.r_offset += (input_section->output_section->vma
8738 + input_section->output_offset);
8739
8740 if (skip)
8741 memset (&outrel, 0, sizeof outrel);
8742 else if (!SYMBOL_REFERENCES_LOCAL (info, h))
8743 {
8744 indx = h->dynindx;
8745 BFD_ASSERT (indx != -1);
8746 unresolved_reloc = FALSE;
8747 outrel.r_info = ELF32_R_INFO (indx, r_type);
8748 outrel.r_addend = rel->r_addend;
8749 }
8750 else
8751 {
8752 outrel.r_addend = relocation + rel->r_addend;
8753
8754 if (r_type != R_PPC_ADDR32)
8755 {
8756 if (ifunc != NULL)
8757 {
8758 /* If we get here when building a static
8759 executable, then the libc startup function
8760 responsible for applying indirect function
8761 relocations is going to complain about
8762 the reloc type.
8763 If we get here when building a dynamic
8764 executable, it will be because we have
8765 a text relocation. The dynamic loader
8766 will set the text segment writable and
8767 non-executable to apply text relocations.
8768 So we'll segfault when trying to run the
8769 indirection function to resolve the reloc. */
8770 info->callbacks->einfo
8771 /* xgettext:c-format */
8772 (_("%H: relocation %s for indirect "
8773 "function %s unsupported\n"),
8774 input_bfd, input_section, rel->r_offset,
8775 howto->name,
8776 sym_name);
8777 ret = FALSE;
8778 }
8779 else if (r_symndx == STN_UNDEF || bfd_is_abs_section (sec))
8780 ;
8781 else if (sec == NULL || sec->owner == NULL)
8782 {
8783 bfd_set_error (bfd_error_bad_value);
8784 ret = FALSE;
8785 }
8786 else
8787 {
8788 asection *osec;
8789
8790 /* We are turning this relocation into one
8791 against a section symbol. It would be
8792 proper to subtract the symbol's value,
8793 osec->vma, from the emitted reloc addend,
8794 but ld.so expects buggy relocs.
8795 FIXME: Why not always use a zero index? */
8796 osec = sec->output_section;
8797 indx = elf_section_data (osec)->dynindx;
8798 if (indx == 0)
8799 {
8800 osec = htab->elf.text_index_section;
8801 indx = elf_section_data (osec)->dynindx;
8802 }
8803 BFD_ASSERT (indx != 0);
8804 #ifdef DEBUG
8805 if (indx == 0)
8806 printf ("indx=%ld section=%s flags=%08x name=%s\n",
8807 indx, osec->name, osec->flags,
8808 h->root.root.string);
8809 #endif
8810 }
8811
8812 outrel.r_info = ELF32_R_INFO (indx, r_type);
8813 }
8814 else if (ifunc != NULL)
8815 outrel.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
8816 else
8817 outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
8818 }
8819
8820 sreloc = elf_section_data (input_section)->sreloc;
8821 if (ifunc)
8822 {
8823 sreloc = htab->elf.irelplt;
8824 if (indx == 0)
8825 htab->local_ifunc_resolver = 1;
8826 else if (is_static_defined (h))
8827 htab->maybe_local_ifunc_resolver = 1;
8828 }
8829 if (sreloc == NULL)
8830 return FALSE;
8831
8832 loc = sreloc->contents;
8833 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
8834 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
8835
8836 if (skip == -1)
8837 goto copy_reloc;
8838
8839 /* This reloc will be computed at runtime. Clear the memory
8840 so that it contains a predictable value for prelink. */
8841 if (!skip)
8842 {
8843 relocation = howto->pc_relative ? outrel.r_offset : 0;
8844 addend = 0;
8845 break;
8846 }
8847 }
8848 break;
8849
8850 case R_PPC_RELAX_PLT:
8851 case R_PPC_RELAX_PLTREL24:
8852 if (h != NULL)
8853 {
8854 struct plt_entry *ent;
8855 bfd_vma got2_addend = 0;
8856
8857 if (r_type == R_PPC_RELAX_PLTREL24)
8858 {
8859 if (bfd_link_pic (info))
8860 got2_addend = addend;
8861 addend = 0;
8862 }
8863 ent = find_plt_ent (&h->plt.plist, got2, got2_addend);
8864 if (htab->plt_type == PLT_NEW)
8865 relocation = (htab->glink->output_section->vma
8866 + htab->glink->output_offset
8867 + ent->glink_offset);
8868 else
8869 relocation = (htab->elf.splt->output_section->vma
8870 + htab->elf.splt->output_offset
8871 + ent->plt.offset);
8872 }
8873 /* Fall through. */
8874
8875 case R_PPC_RELAX:
8876 {
8877 const int *stub;
8878 size_t size;
8879 size_t insn_offset = rel->r_offset;
8880 unsigned int insn;
8881
8882 if (bfd_link_pic (info))
8883 {
8884 relocation -= (input_section->output_section->vma
8885 + input_section->output_offset
8886 + rel->r_offset - 4);
8887 stub = shared_stub_entry;
8888 bfd_put_32 (input_bfd, stub[0], contents + insn_offset - 12);
8889 bfd_put_32 (input_bfd, stub[1], contents + insn_offset - 8);
8890 bfd_put_32 (input_bfd, stub[2], contents + insn_offset - 4);
8891 stub += 3;
8892 size = ARRAY_SIZE (shared_stub_entry) - 3;
8893 }
8894 else
8895 {
8896 stub = stub_entry;
8897 size = ARRAY_SIZE (stub_entry);
8898 }
8899
8900 relocation += addend;
8901 if (bfd_link_relocatable (info))
8902 relocation = 0;
8903
8904 /* First insn is HA, second is LO. */
8905 insn = *stub++;
8906 insn |= ((relocation + 0x8000) >> 16) & 0xffff;
8907 bfd_put_32 (input_bfd, insn, contents + insn_offset);
8908 insn_offset += 4;
8909
8910 insn = *stub++;
8911 insn |= relocation & 0xffff;
8912 bfd_put_32 (input_bfd, insn, contents + insn_offset);
8913 insn_offset += 4;
8914 size -= 2;
8915
8916 while (size != 0)
8917 {
8918 insn = *stub++;
8919 --size;
8920 bfd_put_32 (input_bfd, insn, contents + insn_offset);
8921 insn_offset += 4;
8922 }
8923
8924 /* Rewrite the reloc and convert one of the trailing nop
8925 relocs to describe this relocation. */
8926 BFD_ASSERT (ELF32_R_TYPE (relend[-1].r_info) == R_PPC_NONE);
8927 /* The relocs are at the bottom 2 bytes */
8928 wrel->r_offset = rel->r_offset + d_offset;
8929 wrel->r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_HA);
8930 wrel->r_addend = rel->r_addend;
8931 memmove (wrel + 1, wrel, (relend - wrel - 1) * sizeof (*wrel));
8932 wrel++, rel++;
8933 wrel->r_offset += 4;
8934 wrel->r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_LO);
8935 }
8936 continue;
8937
8938 /* Indirect .sdata relocation. */
8939 case R_PPC_EMB_SDAI16:
8940 BFD_ASSERT (htab->sdata[0].section != NULL);
8941 if (!is_static_defined (htab->sdata[0].sym))
8942 {
8943 unresolved_reloc = TRUE;
8944 break;
8945 }
8946 relocation
8947 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[0],
8948 h, relocation, rel);
8949 addend = 0;
8950 break;
8951
8952 /* Indirect .sdata2 relocation. */
8953 case R_PPC_EMB_SDA2I16:
8954 BFD_ASSERT (htab->sdata[1].section != NULL);
8955 if (!is_static_defined (htab->sdata[1].sym))
8956 {
8957 unresolved_reloc = TRUE;
8958 break;
8959 }
8960 relocation
8961 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[1],
8962 h, relocation, rel);
8963 addend = 0;
8964 break;
8965
8966 /* Handle the TOC16 reloc. We want to use the offset within the .got
8967 section, not the actual VMA. This is appropriate when generating
8968 an embedded ELF object, for which the .got section acts like the
8969 AIX .toc section. */
8970 case R_PPC_TOC16: /* phony GOT16 relocations */
8971 if (sec == NULL || sec->output_section == NULL)
8972 {
8973 unresolved_reloc = TRUE;
8974 break;
8975 }
8976 BFD_ASSERT (strcmp (bfd_get_section_name (sec->owner, sec),
8977 ".got") == 0
8978 || strcmp (bfd_get_section_name (sec->owner, sec),
8979 ".cgot") == 0);
8980
8981 addend -= sec->output_section->vma + sec->output_offset + 0x8000;
8982 break;
8983
8984 case R_PPC_PLTREL24:
8985 if (h != NULL && ifunc == NULL)
8986 {
8987 struct plt_entry *ent;
8988
8989 ent = find_plt_ent (&h->plt.plist, got2,
8990 bfd_link_pic (info) ? addend : 0);
8991 if (ent == NULL
8992 || htab->elf.splt == NULL)
8993 {
8994 /* We didn't make a PLT entry for this symbol. This
8995 happens when statically linking PIC code, or when
8996 using -Bsymbolic. */
8997 }
8998 else
8999 {
9000 /* Relocation is to the entry for this symbol in the
9001 procedure linkage table. */
9002 unresolved_reloc = FALSE;
9003 if (htab->plt_type == PLT_NEW)
9004 relocation = (htab->glink->output_section->vma
9005 + htab->glink->output_offset
9006 + ent->glink_offset);
9007 else
9008 relocation = (htab->elf.splt->output_section->vma
9009 + htab->elf.splt->output_offset
9010 + ent->plt.offset);
9011 }
9012 }
9013
9014 /* R_PPC_PLTREL24 is rather special. If non-zero, the
9015 addend specifies the GOT pointer offset within .got2.
9016 Don't apply it to the relocation field. */
9017 addend = 0;
9018 break;
9019
9020 /* Relocate against _SDA_BASE_. */
9021 case R_PPC_SDAREL16:
9022 {
9023 const char *name;
9024 struct elf_link_hash_entry *sda = htab->sdata[0].sym;
9025
9026 if (sec == NULL
9027 || sec->output_section == NULL
9028 || !is_static_defined (sda))
9029 {
9030 unresolved_reloc = TRUE;
9031 break;
9032 }
9033 addend -= SYM_VAL (sda);
9034
9035 name = bfd_get_section_name (output_bfd, sec->output_section);
9036 if (!(strcmp (name, ".sdata") == 0
9037 || strcmp (name, ".sbss") == 0))
9038 {
9039 info->callbacks->einfo
9040 /* xgettext:c-format */
9041 (_("%P: %B: the target (%s) of a %s relocation is "
9042 "in the wrong output section (%s)\n"),
9043 input_bfd,
9044 sym_name,
9045 howto->name,
9046 name);
9047 }
9048 }
9049 break;
9050
9051 /* Relocate against _SDA2_BASE_. */
9052 case R_PPC_EMB_SDA2REL:
9053 {
9054 const char *name;
9055 struct elf_link_hash_entry *sda = htab->sdata[1].sym;
9056
9057 if (sec == NULL
9058 || sec->output_section == NULL
9059 || !is_static_defined (sda))
9060 {
9061 unresolved_reloc = TRUE;
9062 break;
9063 }
9064 addend -= SYM_VAL (sda);
9065
9066 name = bfd_get_section_name (output_bfd, sec->output_section);
9067 if (!(strcmp (name, ".sdata2") == 0
9068 || strcmp (name, ".sbss2") == 0))
9069 {
9070 info->callbacks->einfo
9071 /* xgettext:c-format */
9072 (_("%P: %B: the target (%s) of a %s relocation is "
9073 "in the wrong output section (%s)\n"),
9074 input_bfd,
9075 sym_name,
9076 howto->name,
9077 name);
9078 }
9079 }
9080 break;
9081
9082 case R_PPC_VLE_LO16A:
9083 relocation = relocation + addend;
9084 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9085 contents + rel->r_offset, relocation,
9086 split16a_type, htab->params->vle_reloc_fixup);
9087 goto copy_reloc;
9088
9089 case R_PPC_VLE_LO16D:
9090 relocation = relocation + addend;
9091 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9092 contents + rel->r_offset, relocation,
9093 split16d_type, htab->params->vle_reloc_fixup);
9094 goto copy_reloc;
9095
9096 case R_PPC_VLE_HI16A:
9097 relocation = (relocation + addend) >> 16;
9098 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9099 contents + rel->r_offset, relocation,
9100 split16a_type, htab->params->vle_reloc_fixup);
9101 goto copy_reloc;
9102
9103 case R_PPC_VLE_HI16D:
9104 relocation = (relocation + addend) >> 16;
9105 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9106 contents + rel->r_offset, relocation,
9107 split16d_type, htab->params->vle_reloc_fixup);
9108 goto copy_reloc;
9109
9110 case R_PPC_VLE_HA16A:
9111 relocation = (relocation + addend + 0x8000) >> 16;
9112 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9113 contents + rel->r_offset, relocation,
9114 split16a_type, htab->params->vle_reloc_fixup);
9115 goto copy_reloc;
9116
9117 case R_PPC_VLE_HA16D:
9118 relocation = (relocation + addend + 0x8000) >> 16;
9119 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9120 contents + rel->r_offset, relocation,
9121 split16d_type, htab->params->vle_reloc_fixup);
9122 goto copy_reloc;
9123
9124 /* Relocate against either _SDA_BASE_, _SDA2_BASE_, or 0. */
9125 case R_PPC_EMB_SDA21:
9126 case R_PPC_VLE_SDA21:
9127 case R_PPC_EMB_RELSDA:
9128 case R_PPC_VLE_SDA21_LO:
9129 {
9130 const char *name;
9131 int reg;
9132 unsigned int insn;
9133 struct elf_link_hash_entry *sda = NULL;
9134
9135 if (sec == NULL || sec->output_section == NULL)
9136 {
9137 unresolved_reloc = TRUE;
9138 break;
9139 }
9140
9141 name = bfd_get_section_name (output_bfd, sec->output_section);
9142 if (strcmp (name, ".sdata") == 0
9143 || strcmp (name, ".sbss") == 0)
9144 {
9145 reg = 13;
9146 sda = htab->sdata[0].sym;
9147 }
9148 else if (strcmp (name, ".sdata2") == 0
9149 || strcmp (name, ".sbss2") == 0)
9150 {
9151 reg = 2;
9152 sda = htab->sdata[1].sym;
9153 }
9154 else if (strcmp (name, ".PPC.EMB.sdata0") == 0
9155 || strcmp (name, ".PPC.EMB.sbss0") == 0)
9156 {
9157 reg = 0;
9158 }
9159 else
9160 {
9161 info->callbacks->einfo
9162 /* xgettext:c-format */
9163 (_("%P: %B: the target (%s) of a %s relocation is "
9164 "in the wrong output section (%s)\n"),
9165 input_bfd,
9166 sym_name,
9167 howto->name,
9168 name);
9169
9170 bfd_set_error (bfd_error_bad_value);
9171 ret = FALSE;
9172 goto copy_reloc;
9173 }
9174
9175 if (sda != NULL)
9176 {
9177 if (!is_static_defined (sda))
9178 {
9179 unresolved_reloc = TRUE;
9180 break;
9181 }
9182 addend -= SYM_VAL (sda);
9183 }
9184
9185 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
9186 if (reg == 0
9187 && (r_type == R_PPC_VLE_SDA21
9188 || r_type == R_PPC_VLE_SDA21_LO))
9189 {
9190 relocation = relocation + addend;
9191 addend = 0;
9192
9193 /* Force e_li insn, keeping RT from original insn. */
9194 insn &= 0x1f << 21;
9195 insn |= 28u << 26;
9196
9197 /* We have an li20 field, bits 17..20, 11..15, 21..31. */
9198 /* Top 4 bits of value to 17..20. */
9199 insn |= (relocation & 0xf0000) >> 5;
9200 /* Next 5 bits of the value to 11..15. */
9201 insn |= (relocation & 0xf800) << 5;
9202 /* And the final 11 bits of the value to bits 21 to 31. */
9203 insn |= relocation & 0x7ff;
9204
9205 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
9206
9207 if (r_type == R_PPC_VLE_SDA21
9208 && ((relocation + 0x80000) & 0xffffffff) > 0x100000)
9209 goto overflow;
9210 goto copy_reloc;
9211 }
9212 else if (r_type == R_PPC_EMB_SDA21
9213 || r_type == R_PPC_VLE_SDA21
9214 || r_type == R_PPC_VLE_SDA21_LO)
9215 {
9216 /* Fill in register field. */
9217 insn = (insn & ~RA_REGISTER_MASK) | (reg << RA_REGISTER_SHIFT);
9218 }
9219 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
9220 }
9221 break;
9222
9223 case R_PPC_VLE_SDAREL_LO16A:
9224 case R_PPC_VLE_SDAREL_LO16D:
9225 case R_PPC_VLE_SDAREL_HI16A:
9226 case R_PPC_VLE_SDAREL_HI16D:
9227 case R_PPC_VLE_SDAREL_HA16A:
9228 case R_PPC_VLE_SDAREL_HA16D:
9229 {
9230 bfd_vma value;
9231 const char *name;
9232 struct elf_link_hash_entry *sda = NULL;
9233
9234 if (sec == NULL || sec->output_section == NULL)
9235 {
9236 unresolved_reloc = TRUE;
9237 break;
9238 }
9239
9240 name = bfd_get_section_name (output_bfd, sec->output_section);
9241 if (strcmp (name, ".sdata") == 0
9242 || strcmp (name, ".sbss") == 0)
9243 sda = htab->sdata[0].sym;
9244 else if (strcmp (name, ".sdata2") == 0
9245 || strcmp (name, ".sbss2") == 0)
9246 sda = htab->sdata[1].sym;
9247 else
9248 {
9249 _bfd_error_handler
9250 /* xgettext:c-format */
9251 (_("%B: the target (%s) of a %s relocation is "
9252 "in the wrong output section (%s)"),
9253 input_bfd,
9254 sym_name,
9255 howto->name,
9256 name);
9257
9258 bfd_set_error (bfd_error_bad_value);
9259 ret = FALSE;
9260 goto copy_reloc;
9261 }
9262
9263 if (sda == NULL || !is_static_defined (sda))
9264 {
9265 unresolved_reloc = TRUE;
9266 break;
9267 }
9268 value = relocation + addend - SYM_VAL (sda);
9269
9270 if (r_type == R_PPC_VLE_SDAREL_LO16A)
9271 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9272 contents + rel->r_offset, value,
9273 split16a_type,
9274 htab->params->vle_reloc_fixup);
9275 else if (r_type == R_PPC_VLE_SDAREL_LO16D)
9276 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9277 contents + rel->r_offset, value,
9278 split16d_type,
9279 htab->params->vle_reloc_fixup);
9280 else if (r_type == R_PPC_VLE_SDAREL_HI16A)
9281 {
9282 value = value >> 16;
9283 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9284 contents + rel->r_offset, value,
9285 split16a_type,
9286 htab->params->vle_reloc_fixup);
9287 }
9288 else if (r_type == R_PPC_VLE_SDAREL_HI16D)
9289 {
9290 value = value >> 16;
9291 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9292 contents + rel->r_offset, value,
9293 split16d_type,
9294 htab->params->vle_reloc_fixup);
9295 }
9296 else if (r_type == R_PPC_VLE_SDAREL_HA16A)
9297 {
9298 value = (value + 0x8000) >> 16;
9299 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9300 contents + rel->r_offset, value,
9301 split16a_type,
9302 htab->params->vle_reloc_fixup);
9303 }
9304 else if (r_type == R_PPC_VLE_SDAREL_HA16D)
9305 {
9306 value = (value + 0x8000) >> 16;
9307 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9308 contents + rel->r_offset, value,
9309 split16d_type,
9310 htab->params->vle_reloc_fixup);
9311 }
9312 }
9313 goto copy_reloc;
9314
9315 case R_PPC_VLE_ADDR20:
9316 ppc_elf_vle_split20 (output_bfd, contents + rel->r_offset, relocation);
9317 continue;
9318
9319 /* Relocate against the beginning of the section. */
9320 case R_PPC_SECTOFF:
9321 case R_PPC_SECTOFF_LO:
9322 case R_PPC_SECTOFF_HI:
9323 case R_PPC_SECTOFF_HA:
9324 if (sec == NULL || sec->output_section == NULL)
9325 {
9326 unresolved_reloc = TRUE;
9327 break;
9328 }
9329 addend -= sec->output_section->vma;
9330 break;
9331
9332 /* Negative relocations. */
9333 case R_PPC_EMB_NADDR32:
9334 case R_PPC_EMB_NADDR16:
9335 case R_PPC_EMB_NADDR16_LO:
9336 case R_PPC_EMB_NADDR16_HI:
9337 case R_PPC_EMB_NADDR16_HA:
9338 addend -= 2 * relocation;
9339 break;
9340
9341 case R_PPC_COPY:
9342 case R_PPC_GLOB_DAT:
9343 case R_PPC_JMP_SLOT:
9344 case R_PPC_RELATIVE:
9345 case R_PPC_IRELATIVE:
9346 case R_PPC_PLT32:
9347 case R_PPC_PLTREL32:
9348 case R_PPC_PLT16_LO:
9349 case R_PPC_PLT16_HI:
9350 case R_PPC_PLT16_HA:
9351 case R_PPC_ADDR30:
9352 case R_PPC_EMB_RELSEC16:
9353 case R_PPC_EMB_RELST_LO:
9354 case R_PPC_EMB_RELST_HI:
9355 case R_PPC_EMB_RELST_HA:
9356 case R_PPC_EMB_BIT_FLD:
9357 info->callbacks->einfo
9358 /* xgettext:c-format */
9359 (_("%P: %B: relocation %s is not yet supported for symbol %s\n"),
9360 input_bfd,
9361 howto->name,
9362 sym_name);
9363
9364 bfd_set_error (bfd_error_invalid_operation);
9365 ret = FALSE;
9366 goto copy_reloc;
9367 }
9368
9369 /* Do any further special processing. */
9370 switch (r_type)
9371 {
9372 default:
9373 break;
9374
9375 case R_PPC_ADDR16_HA:
9376 case R_PPC_REL16_HA:
9377 case R_PPC_REL16DX_HA:
9378 case R_PPC_SECTOFF_HA:
9379 case R_PPC_TPREL16_HA:
9380 case R_PPC_DTPREL16_HA:
9381 case R_PPC_EMB_NADDR16_HA:
9382 case R_PPC_EMB_RELST_HA:
9383 /* It's just possible that this symbol is a weak symbol
9384 that's not actually defined anywhere. In that case,
9385 'sec' would be NULL, and we should leave the symbol
9386 alone (it will be set to zero elsewhere in the link). */
9387 if (sec == NULL)
9388 break;
9389 /* Fall through. */
9390
9391 case R_PPC_PLT16_HA:
9392 case R_PPC_GOT16_HA:
9393 case R_PPC_GOT_TLSGD16_HA:
9394 case R_PPC_GOT_TLSLD16_HA:
9395 case R_PPC_GOT_TPREL16_HA:
9396 case R_PPC_GOT_DTPREL16_HA:
9397 /* Add 0x10000 if sign bit in 0:15 is set.
9398 Bits 0:15 are not used. */
9399 addend += 0x8000;
9400 break;
9401
9402 case R_PPC_ADDR16:
9403 case R_PPC_ADDR16_LO:
9404 case R_PPC_GOT16:
9405 case R_PPC_GOT16_LO:
9406 case R_PPC_SDAREL16:
9407 case R_PPC_SECTOFF:
9408 case R_PPC_SECTOFF_LO:
9409 case R_PPC_DTPREL16:
9410 case R_PPC_DTPREL16_LO:
9411 case R_PPC_TPREL16:
9412 case R_PPC_TPREL16_LO:
9413 case R_PPC_GOT_TLSGD16:
9414 case R_PPC_GOT_TLSGD16_LO:
9415 case R_PPC_GOT_TLSLD16:
9416 case R_PPC_GOT_TLSLD16_LO:
9417 case R_PPC_GOT_DTPREL16:
9418 case R_PPC_GOT_DTPREL16_LO:
9419 case R_PPC_GOT_TPREL16:
9420 case R_PPC_GOT_TPREL16_LO:
9421 {
9422 /* The 32-bit ABI lacks proper relocations to deal with
9423 certain 64-bit instructions. Prevent damage to bits
9424 that make up part of the insn opcode. */
9425 unsigned int insn, mask, lobit;
9426
9427 insn = bfd_get_32 (input_bfd,
9428 contents + rel->r_offset - d_offset);
9429 mask = 0;
9430 if (is_insn_ds_form (insn))
9431 mask = 3;
9432 else if (is_insn_dq_form (insn))
9433 mask = 15;
9434 else
9435 break;
9436 relocation += addend;
9437 addend = insn & mask;
9438 lobit = mask & relocation;
9439 if (lobit != 0)
9440 {
9441 relocation ^= lobit;
9442 info->callbacks->einfo
9443 /* xgettext:c-format */
9444 (_("%H: error: %s against `%s' not a multiple of %u\n"),
9445 input_bfd, input_section, rel->r_offset,
9446 howto->name, sym_name, mask + 1);
9447 bfd_set_error (bfd_error_bad_value);
9448 ret = FALSE;
9449 }
9450 }
9451 break;
9452 }
9453
9454 #ifdef DEBUG
9455 fprintf (stderr, "\ttype = %s (%d), name = %s, symbol index = %ld, "
9456 "offset = %ld, addend = %ld\n",
9457 howto->name,
9458 (int) r_type,
9459 sym_name,
9460 r_symndx,
9461 (long) rel->r_offset,
9462 (long) addend);
9463 #endif
9464
9465 if (unresolved_reloc
9466 && !((input_section->flags & SEC_DEBUGGING) != 0
9467 && h->def_dynamic)
9468 && _bfd_elf_section_offset (output_bfd, info, input_section,
9469 rel->r_offset) != (bfd_vma) -1)
9470 {
9471 info->callbacks->einfo
9472 /* xgettext:c-format */
9473 (_("%H: unresolvable %s relocation against symbol `%s'\n"),
9474 input_bfd, input_section, rel->r_offset,
9475 howto->name,
9476 sym_name);
9477 ret = FALSE;
9478 }
9479
9480 /* 16-bit fields in insns mostly have signed values, but a
9481 few insns have 16-bit unsigned values. Really, we should
9482 have different reloc types. */
9483 if (howto->complain_on_overflow != complain_overflow_dont
9484 && howto->dst_mask == 0xffff
9485 && (input_section->flags & SEC_CODE) != 0)
9486 {
9487 enum complain_overflow complain = complain_overflow_signed;
9488
9489 if ((elf_section_flags (input_section) & SHF_PPC_VLE) == 0)
9490 {
9491 unsigned int insn;
9492
9493 insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
9494 if ((insn & (0x3f << 26)) == 10u << 26 /* cmpli */)
9495 complain = complain_overflow_bitfield;
9496 else if ((insn & (0x3f << 26)) == 28u << 26 /* andi */
9497 || (insn & (0x3f << 26)) == 24u << 26 /* ori */
9498 || (insn & (0x3f << 26)) == 26u << 26 /* xori */)
9499 complain = complain_overflow_unsigned;
9500 }
9501 if (howto->complain_on_overflow != complain)
9502 {
9503 alt_howto = *howto;
9504 alt_howto.complain_on_overflow = complain;
9505 howto = &alt_howto;
9506 }
9507 }
9508
9509 if (r_type == R_PPC_REL16DX_HA)
9510 {
9511 /* Split field reloc isn't handled by _bfd_final_link_relocate. */
9512 if (rel->r_offset + 4 > input_section->size)
9513 r = bfd_reloc_outofrange;
9514 else
9515 {
9516 unsigned int insn;
9517
9518 relocation += addend;
9519 relocation -= (rel->r_offset
9520 + input_section->output_offset
9521 + input_section->output_section->vma);
9522 relocation >>= 16;
9523 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
9524 insn &= ~0x1fffc1;
9525 insn |= (relocation & 0xffc1) | ((relocation & 0x3e) << 15);
9526 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
9527 r = bfd_reloc_ok;
9528 }
9529 }
9530 else
9531 r = _bfd_final_link_relocate (howto, input_bfd, input_section, contents,
9532 rel->r_offset, relocation, addend);
9533
9534 if (r != bfd_reloc_ok)
9535 {
9536 if (r == bfd_reloc_overflow)
9537 {
9538 overflow:
9539 /* On code like "if (foo) foo();" don't report overflow
9540 on a branch to zero when foo is undefined. */
9541 if (!warned
9542 && !(h != NULL
9543 && (h->root.type == bfd_link_hash_undefweak
9544 || h->root.type == bfd_link_hash_undefined)
9545 && is_branch_reloc (r_type)))
9546 info->callbacks->reloc_overflow
9547 (info, (h ? &h->root : NULL), sym_name, howto->name,
9548 rel->r_addend, input_bfd, input_section, rel->r_offset);
9549 }
9550 else
9551 {
9552 info->callbacks->einfo
9553 /* xgettext:c-format */
9554 (_("%H: %s reloc against `%s': error %d\n"),
9555 input_bfd, input_section, rel->r_offset,
9556 howto->name, sym_name, (int) r);
9557 ret = FALSE;
9558 }
9559 }
9560 copy_reloc:
9561 if (wrel != rel)
9562 *wrel = *rel;
9563 }
9564
9565 if (wrel != rel)
9566 {
9567 Elf_Internal_Shdr *rel_hdr;
9568 size_t deleted = rel - wrel;
9569
9570 rel_hdr = _bfd_elf_single_rel_hdr (input_section->output_section);
9571 rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted;
9572 if (rel_hdr->sh_size == 0)
9573 {
9574 /* It is too late to remove an empty reloc section. Leave
9575 one NONE reloc.
9576 ??? What is wrong with an empty section??? */
9577 rel_hdr->sh_size = rel_hdr->sh_entsize;
9578 deleted -= 1;
9579 wrel++;
9580 }
9581 relend = wrel;
9582 rel_hdr = _bfd_elf_single_rel_hdr (input_section);
9583 rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted;
9584 input_section->reloc_count -= deleted;
9585 }
9586
9587 #ifdef DEBUG
9588 fprintf (stderr, "\n");
9589 #endif
9590
9591 if (input_section->sec_info_type == SEC_INFO_TYPE_TARGET
9592 && input_section->size != input_section->rawsize
9593 && (strcmp (input_section->output_section->name, ".init") == 0
9594 || strcmp (input_section->output_section->name, ".fini") == 0))
9595 {
9596 /* Branch around the trampolines. */
9597 unsigned int insn = B + input_section->size - input_section->rawsize;
9598 bfd_put_32 (input_bfd, insn, contents + input_section->rawsize);
9599 }
9600
9601 if (htab->params->ppc476_workaround
9602 && input_section->sec_info_type == SEC_INFO_TYPE_TARGET
9603 && (!bfd_link_relocatable (info)
9604 || (input_section->output_section->alignment_power
9605 >= htab->params->pagesize_p2)))
9606 {
9607 bfd_vma start_addr, end_addr, addr;
9608 bfd_vma pagesize = (bfd_vma) 1 << htab->params->pagesize_p2;
9609
9610 if (relax_info->workaround_size != 0)
9611 {
9612 bfd_byte *p;
9613 unsigned int n;
9614 bfd_byte fill[4];
9615
9616 bfd_put_32 (input_bfd, BA, fill);
9617 p = contents + input_section->size - relax_info->workaround_size;
9618 n = relax_info->workaround_size >> 2;
9619 while (n--)
9620 {
9621 memcpy (p, fill, 4);
9622 p += 4;
9623 }
9624 }
9625
9626 /* The idea is: Replace the last instruction on a page with a
9627 branch to a patch area. Put the insn there followed by a
9628 branch back to the next page. Complicated a little by
9629 needing to handle moved conditional branches, and by not
9630 wanting to touch data-in-text. */
9631
9632 start_addr = (input_section->output_section->vma
9633 + input_section->output_offset);
9634 end_addr = (start_addr + input_section->size
9635 - relax_info->workaround_size);
9636 for (addr = ((start_addr & -pagesize) + pagesize - 4);
9637 addr < end_addr;
9638 addr += pagesize)
9639 {
9640 bfd_vma offset = addr - start_addr;
9641 Elf_Internal_Rela *lo, *hi;
9642 bfd_boolean is_data;
9643 bfd_vma patch_off, patch_addr;
9644 unsigned int insn;
9645
9646 /* Do we have a data reloc at this offset? If so, leave
9647 the word alone. */
9648 is_data = FALSE;
9649 lo = relocs;
9650 hi = relend;
9651 rel = NULL;
9652 while (lo < hi)
9653 {
9654 rel = lo + (hi - lo) / 2;
9655 if (rel->r_offset < offset)
9656 lo = rel + 1;
9657 else if (rel->r_offset > offset + 3)
9658 hi = rel;
9659 else
9660 {
9661 switch (ELF32_R_TYPE (rel->r_info))
9662 {
9663 case R_PPC_ADDR32:
9664 case R_PPC_UADDR32:
9665 case R_PPC_REL32:
9666 case R_PPC_ADDR30:
9667 is_data = TRUE;
9668 break;
9669 default:
9670 break;
9671 }
9672 break;
9673 }
9674 }
9675 if (is_data)
9676 continue;
9677
9678 /* Some instructions can be left alone too. Unconditional
9679 branches, except for bcctr with BO=0x14 (bctr, bctrl),
9680 avoid the icache failure.
9681
9682 The problem occurs due to prefetch across a page boundary
9683 where stale instructions can be fetched from the next
9684 page, and the mechanism for flushing these bad
9685 instructions fails under certain circumstances. The
9686 unconditional branches:
9687 1) Branch: b, bl, ba, bla,
9688 2) Branch Conditional: bc, bca, bcl, bcla,
9689 3) Branch Conditional to Link Register: bclr, bclrl,
9690 where (2) and (3) have BO=0x14 making them unconditional,
9691 prevent the bad prefetch because the prefetch itself is
9692 affected by these instructions. This happens even if the
9693 instruction is not executed.
9694
9695 A bctr example:
9696 .
9697 . lis 9,new_page@ha
9698 . addi 9,9,new_page@l
9699 . mtctr 9
9700 . bctr
9701 . nop
9702 . nop
9703 . new_page:
9704 .
9705 The bctr is not predicted taken due to ctr not being
9706 ready, so prefetch continues on past the bctr into the
9707 new page which might have stale instructions. If they
9708 fail to be flushed, then they will be executed after the
9709 bctr executes. Either of the following modifications
9710 prevent the bad prefetch from happening in the first
9711 place:
9712 .
9713 . lis 9,new_page@ha lis 9,new_page@ha
9714 . addi 9,9,new_page@l addi 9,9,new_page@l
9715 . mtctr 9 mtctr 9
9716 . bctr bctr
9717 . nop b somewhere_else
9718 . b somewhere_else nop
9719 . new_page: new_page:
9720 . */
9721 insn = bfd_get_32 (input_bfd, contents + offset);
9722 if ((insn & (0x3f << 26)) == (18u << 26) /* b,bl,ba,bla */
9723 || ((insn & (0x3f << 26)) == (16u << 26) /* bc,bcl,bca,bcla*/
9724 && (insn & (0x14 << 21)) == (0x14 << 21)) /* with BO=0x14 */
9725 || ((insn & (0x3f << 26)) == (19u << 26)
9726 && (insn & (0x3ff << 1)) == (16u << 1) /* bclr,bclrl */
9727 && (insn & (0x14 << 21)) == (0x14 << 21)))/* with BO=0x14 */
9728 continue;
9729
9730 patch_addr = (start_addr + input_section->size
9731 - relax_info->workaround_size);
9732 patch_addr = (patch_addr + 15) & -16;
9733 patch_off = patch_addr - start_addr;
9734 bfd_put_32 (input_bfd, B + patch_off - offset, contents + offset);
9735
9736 if (rel != NULL
9737 && rel->r_offset >= offset
9738 && rel->r_offset < offset + 4)
9739 {
9740 asection *sreloc;
9741
9742 /* If the insn we are patching had a reloc, adjust the
9743 reloc r_offset so that the reloc applies to the moved
9744 location. This matters for -r and --emit-relocs. */
9745 if (rel + 1 != relend)
9746 {
9747 Elf_Internal_Rela tmp = *rel;
9748
9749 /* Keep the relocs sorted by r_offset. */
9750 memmove (rel, rel + 1, (relend - (rel + 1)) * sizeof (*rel));
9751 relend[-1] = tmp;
9752 }
9753 relend[-1].r_offset += patch_off - offset;
9754
9755 /* Adjust REL16 addends too. */
9756 switch (ELF32_R_TYPE (relend[-1].r_info))
9757 {
9758 case R_PPC_REL16:
9759 case R_PPC_REL16_LO:
9760 case R_PPC_REL16_HI:
9761 case R_PPC_REL16_HA:
9762 relend[-1].r_addend += patch_off - offset;
9763 break;
9764 default:
9765 break;
9766 }
9767
9768 /* If we are building a PIE or shared library with
9769 non-PIC objects, perhaps we had a dynamic reloc too?
9770 If so, the dynamic reloc must move with the insn. */
9771 sreloc = elf_section_data (input_section)->sreloc;
9772 if (sreloc != NULL)
9773 {
9774 Elf32_External_Rela *slo, *shi, *srelend;
9775 bfd_vma soffset;
9776
9777 slo = (Elf32_External_Rela *) sreloc->contents;
9778 shi = srelend = slo + sreloc->reloc_count;
9779 soffset = (offset + input_section->output_section->vma
9780 + input_section->output_offset);
9781 while (slo < shi)
9782 {
9783 Elf32_External_Rela *srel = slo + (shi - slo) / 2;
9784 bfd_elf32_swap_reloca_in (output_bfd, (bfd_byte *) srel,
9785 &outrel);
9786 if (outrel.r_offset < soffset)
9787 slo = srel + 1;
9788 else if (outrel.r_offset > soffset + 3)
9789 shi = srel;
9790 else
9791 {
9792 if (srel + 1 != srelend)
9793 {
9794 memmove (srel, srel + 1,
9795 (srelend - (srel + 1)) * sizeof (*srel));
9796 srel = srelend - 1;
9797 }
9798 outrel.r_offset += patch_off - offset;
9799 bfd_elf32_swap_reloca_out (output_bfd, &outrel,
9800 (bfd_byte *) srel);
9801 break;
9802 }
9803 }
9804 }
9805 }
9806 else
9807 rel = NULL;
9808
9809 if ((insn & (0x3f << 26)) == (16u << 26) /* bc */
9810 && (insn & 2) == 0 /* relative */)
9811 {
9812 bfd_vma delta = ((insn & 0xfffc) ^ 0x8000) - 0x8000;
9813
9814 delta += offset - patch_off;
9815 if (bfd_link_relocatable (info) && rel != NULL)
9816 delta = 0;
9817 if (!bfd_link_relocatable (info) && rel != NULL)
9818 {
9819 enum elf_ppc_reloc_type r_type;
9820
9821 r_type = ELF32_R_TYPE (relend[-1].r_info);
9822 if (r_type == R_PPC_REL14_BRTAKEN)
9823 insn |= BRANCH_PREDICT_BIT;
9824 else if (r_type == R_PPC_REL14_BRNTAKEN)
9825 insn &= ~BRANCH_PREDICT_BIT;
9826 else
9827 BFD_ASSERT (r_type == R_PPC_REL14);
9828
9829 if ((r_type == R_PPC_REL14_BRTAKEN
9830 || r_type == R_PPC_REL14_BRNTAKEN)
9831 && delta + 0x8000 < 0x10000
9832 && (bfd_signed_vma) delta < 0)
9833 insn ^= BRANCH_PREDICT_BIT;
9834 }
9835 if (delta + 0x8000 < 0x10000)
9836 {
9837 bfd_put_32 (input_bfd,
9838 (insn & ~0xfffc) | (delta & 0xfffc),
9839 contents + patch_off);
9840 patch_off += 4;
9841 bfd_put_32 (input_bfd,
9842 B | ((offset + 4 - patch_off) & 0x3fffffc),
9843 contents + patch_off);
9844 patch_off += 4;
9845 }
9846 else
9847 {
9848 if (rel != NULL)
9849 {
9850 unsigned int r_sym = ELF32_R_SYM (relend[-1].r_info);
9851
9852 relend[-1].r_offset += 8;
9853 relend[-1].r_info = ELF32_R_INFO (r_sym, R_PPC_REL24);
9854 }
9855 bfd_put_32 (input_bfd,
9856 (insn & ~0xfffc) | 8,
9857 contents + patch_off);
9858 patch_off += 4;
9859 bfd_put_32 (input_bfd,
9860 B | ((offset + 4 - patch_off) & 0x3fffffc),
9861 contents + patch_off);
9862 patch_off += 4;
9863 bfd_put_32 (input_bfd,
9864 B | ((delta - 8) & 0x3fffffc),
9865 contents + patch_off);
9866 patch_off += 4;
9867 }
9868 }
9869 else
9870 {
9871 bfd_put_32 (input_bfd, insn, contents + patch_off);
9872 patch_off += 4;
9873 bfd_put_32 (input_bfd,
9874 B | ((offset + 4 - patch_off) & 0x3fffffc),
9875 contents + patch_off);
9876 patch_off += 4;
9877 }
9878 BFD_ASSERT (patch_off <= input_section->size);
9879 relax_info->workaround_size = input_section->size - patch_off;
9880 }
9881 }
9882
9883 return ret;
9884 }
9885 \f
9886 /* Finish up dynamic symbol handling. We set the contents of various
9887 dynamic sections here. */
9888
9889 static bfd_boolean
9890 ppc_elf_finish_dynamic_symbol (bfd *output_bfd,
9891 struct bfd_link_info *info,
9892 struct elf_link_hash_entry *h,
9893 Elf_Internal_Sym *sym)
9894 {
9895 struct ppc_elf_link_hash_table *htab;
9896 struct plt_entry *ent;
9897 bfd_boolean doneone;
9898
9899 #ifdef DEBUG
9900 fprintf (stderr, "ppc_elf_finish_dynamic_symbol called for %s",
9901 h->root.root.string);
9902 #endif
9903
9904 htab = ppc_elf_hash_table (info);
9905 BFD_ASSERT (htab->elf.dynobj != NULL);
9906
9907 doneone = FALSE;
9908 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
9909 if (ent->plt.offset != (bfd_vma) -1)
9910 {
9911 if (!doneone)
9912 {
9913 Elf_Internal_Rela rela;
9914 bfd_byte *loc;
9915 bfd_vma reloc_index;
9916
9917 if (htab->plt_type == PLT_NEW
9918 || !htab->elf.dynamic_sections_created
9919 || h->dynindx == -1)
9920 reloc_index = ent->plt.offset / 4;
9921 else
9922 {
9923 reloc_index = ((ent->plt.offset - htab->plt_initial_entry_size)
9924 / htab->plt_slot_size);
9925 if (reloc_index > PLT_NUM_SINGLE_ENTRIES
9926 && htab->plt_type == PLT_OLD)
9927 reloc_index -= (reloc_index - PLT_NUM_SINGLE_ENTRIES) / 2;
9928 }
9929
9930 /* This symbol has an entry in the procedure linkage table.
9931 Set it up. */
9932 if (htab->plt_type == PLT_VXWORKS
9933 && htab->elf.dynamic_sections_created
9934 && h->dynindx != -1)
9935 {
9936 bfd_vma got_offset;
9937 const bfd_vma *plt_entry;
9938
9939 /* The first three entries in .got.plt are reserved. */
9940 got_offset = (reloc_index + 3) * 4;
9941
9942 /* Use the right PLT. */
9943 plt_entry = bfd_link_pic (info) ? ppc_elf_vxworks_pic_plt_entry
9944 : ppc_elf_vxworks_plt_entry;
9945
9946 /* Fill in the .plt on VxWorks. */
9947 if (bfd_link_pic (info))
9948 {
9949 bfd_put_32 (output_bfd,
9950 plt_entry[0] | PPC_HA (got_offset),
9951 htab->elf.splt->contents + ent->plt.offset + 0);
9952 bfd_put_32 (output_bfd,
9953 plt_entry[1] | PPC_LO (got_offset),
9954 htab->elf.splt->contents + ent->plt.offset + 4);
9955 }
9956 else
9957 {
9958 bfd_vma got_loc = got_offset + SYM_VAL (htab->elf.hgot);
9959
9960 bfd_put_32 (output_bfd,
9961 plt_entry[0] | PPC_HA (got_loc),
9962 htab->elf.splt->contents + ent->plt.offset + 0);
9963 bfd_put_32 (output_bfd,
9964 plt_entry[1] | PPC_LO (got_loc),
9965 htab->elf.splt->contents + ent->plt.offset + 4);
9966 }
9967
9968 bfd_put_32 (output_bfd, plt_entry[2],
9969 htab->elf.splt->contents + ent->plt.offset + 8);
9970 bfd_put_32 (output_bfd, plt_entry[3],
9971 htab->elf.splt->contents + ent->plt.offset + 12);
9972
9973 /* This instruction is an immediate load. The value loaded is
9974 the byte offset of the R_PPC_JMP_SLOT relocation from the
9975 start of the .rela.plt section. The value is stored in the
9976 low-order 16 bits of the load instruction. */
9977 /* NOTE: It appears that this is now an index rather than a
9978 prescaled offset. */
9979 bfd_put_32 (output_bfd,
9980 plt_entry[4] | reloc_index,
9981 htab->elf.splt->contents + ent->plt.offset + 16);
9982 /* This instruction is a PC-relative branch whose target is
9983 the start of the PLT section. The address of this branch
9984 instruction is 20 bytes beyond the start of this PLT entry.
9985 The address is encoded in bits 6-29, inclusive. The value
9986 stored is right-shifted by two bits, permitting a 26-bit
9987 offset. */
9988 bfd_put_32 (output_bfd,
9989 (plt_entry[5]
9990 | (-(ent->plt.offset + 20) & 0x03fffffc)),
9991 htab->elf.splt->contents + ent->plt.offset + 20);
9992 bfd_put_32 (output_bfd, plt_entry[6],
9993 htab->elf.splt->contents + ent->plt.offset + 24);
9994 bfd_put_32 (output_bfd, plt_entry[7],
9995 htab->elf.splt->contents + ent->plt.offset + 28);
9996
9997 /* Fill in the GOT entry corresponding to this PLT slot with
9998 the address immediately after the "bctr" instruction
9999 in this PLT entry. */
10000 bfd_put_32 (output_bfd, (htab->elf.splt->output_section->vma
10001 + htab->elf.splt->output_offset
10002 + ent->plt.offset + 16),
10003 htab->elf.sgotplt->contents + got_offset);
10004
10005 if (!bfd_link_pic (info))
10006 {
10007 /* Fill in a couple of entries in .rela.plt.unloaded. */
10008 loc = htab->srelplt2->contents
10009 + ((VXWORKS_PLTRESOLVE_RELOCS + reloc_index
10010 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS)
10011 * sizeof (Elf32_External_Rela));
10012
10013 /* Provide the @ha relocation for the first instruction. */
10014 rela.r_offset = (htab->elf.splt->output_section->vma
10015 + htab->elf.splt->output_offset
10016 + ent->plt.offset + 2);
10017 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
10018 R_PPC_ADDR16_HA);
10019 rela.r_addend = got_offset;
10020 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10021 loc += sizeof (Elf32_External_Rela);
10022
10023 /* Provide the @l relocation for the second instruction. */
10024 rela.r_offset = (htab->elf.splt->output_section->vma
10025 + htab->elf.splt->output_offset
10026 + ent->plt.offset + 6);
10027 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
10028 R_PPC_ADDR16_LO);
10029 rela.r_addend = got_offset;
10030 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10031 loc += sizeof (Elf32_External_Rela);
10032
10033 /* Provide a relocation for the GOT entry corresponding to this
10034 PLT slot. Point it at the middle of the .plt entry. */
10035 rela.r_offset = (htab->elf.sgotplt->output_section->vma
10036 + htab->elf.sgotplt->output_offset
10037 + got_offset);
10038 rela.r_info = ELF32_R_INFO (htab->elf.hplt->indx,
10039 R_PPC_ADDR32);
10040 rela.r_addend = ent->plt.offset + 16;
10041 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10042 }
10043
10044 /* VxWorks uses non-standard semantics for R_PPC_JMP_SLOT.
10045 In particular, the offset for the relocation is not the
10046 address of the PLT entry for this function, as specified
10047 by the ABI. Instead, the offset is set to the address of
10048 the GOT slot for this function. See EABI 4.4.4.1. */
10049 rela.r_offset = (htab->elf.sgotplt->output_section->vma
10050 + htab->elf.sgotplt->output_offset
10051 + got_offset);
10052
10053 }
10054 else
10055 {
10056 asection *splt = htab->elf.splt;
10057 if (!htab->elf.dynamic_sections_created
10058 || h->dynindx == -1)
10059 splt = htab->elf.iplt;
10060
10061 rela.r_offset = (splt->output_section->vma
10062 + splt->output_offset
10063 + ent->plt.offset);
10064 if (htab->plt_type == PLT_OLD
10065 || !htab->elf.dynamic_sections_created
10066 || h->dynindx == -1)
10067 {
10068 /* We don't need to fill in the .plt. The ppc dynamic
10069 linker will fill it in. */
10070 }
10071 else
10072 {
10073 bfd_vma val = (htab->glink_pltresolve + ent->plt.offset
10074 + htab->glink->output_section->vma
10075 + htab->glink->output_offset);
10076 bfd_put_32 (output_bfd, val,
10077 splt->contents + ent->plt.offset);
10078 }
10079 }
10080
10081 /* Fill in the entry in the .rela.plt section. */
10082 rela.r_addend = 0;
10083 if (!htab->elf.dynamic_sections_created
10084 || h->dynindx == -1)
10085 {
10086 BFD_ASSERT (h->type == STT_GNU_IFUNC
10087 && h->def_regular
10088 && (h->root.type == bfd_link_hash_defined
10089 || h->root.type == bfd_link_hash_defweak));
10090 rela.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
10091 rela.r_addend = SYM_VAL (h);
10092 }
10093 else
10094 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_JMP_SLOT);
10095
10096 if (!htab->elf.dynamic_sections_created
10097 || h->dynindx == -1)
10098 {
10099 loc = (htab->elf.irelplt->contents
10100 + (htab->elf.irelplt->reloc_count++
10101 * sizeof (Elf32_External_Rela)));
10102 htab->local_ifunc_resolver = 1;
10103 }
10104 else
10105 {
10106 loc = (htab->elf.srelplt->contents
10107 + reloc_index * sizeof (Elf32_External_Rela));
10108 if (h->type == STT_GNU_IFUNC && is_static_defined (h))
10109 htab->maybe_local_ifunc_resolver = 1;
10110 }
10111 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10112
10113 if (!h->def_regular)
10114 {
10115 /* Mark the symbol as undefined, rather than as
10116 defined in the .plt section. Leave the value if
10117 there were any relocations where pointer equality
10118 matters (this is a clue for the dynamic linker, to
10119 make function pointer comparisons work between an
10120 application and shared library), otherwise set it
10121 to zero. */
10122 sym->st_shndx = SHN_UNDEF;
10123 if (!h->pointer_equality_needed)
10124 sym->st_value = 0;
10125 else if (!h->ref_regular_nonweak)
10126 {
10127 /* This breaks function pointer comparisons, but
10128 that is better than breaking tests for a NULL
10129 function pointer. */
10130 sym->st_value = 0;
10131 }
10132 }
10133 else if (h->type == STT_GNU_IFUNC
10134 && !bfd_link_pic (info))
10135 {
10136 /* Set the value of ifunc symbols in a non-pie
10137 executable to the glink entry. This is to avoid
10138 text relocations. We can't do this for ifunc in
10139 allocate_dynrelocs, as we do for normal dynamic
10140 function symbols with plt entries, because we need
10141 to keep the original value around for the ifunc
10142 relocation. */
10143 sym->st_shndx = (_bfd_elf_section_from_bfd_section
10144 (output_bfd, htab->glink->output_section));
10145 sym->st_value = (ent->glink_offset
10146 + htab->glink->output_offset
10147 + htab->glink->output_section->vma);
10148 }
10149 doneone = TRUE;
10150 }
10151
10152 if (htab->plt_type == PLT_NEW
10153 || !htab->elf.dynamic_sections_created
10154 || h->dynindx == -1)
10155 {
10156 unsigned char *p;
10157 asection *splt = htab->elf.splt;
10158 if (!htab->elf.dynamic_sections_created
10159 || h->dynindx == -1)
10160 splt = htab->elf.iplt;
10161
10162 p = (unsigned char *) htab->glink->contents + ent->glink_offset;
10163
10164 if (h == htab->tls_get_addr && !htab->params->no_tls_get_addr_opt)
10165 {
10166 bfd_put_32 (output_bfd, LWZ_11_3, p);
10167 p += 4;
10168 bfd_put_32 (output_bfd, LWZ_12_3 + 4, p);
10169 p += 4;
10170 bfd_put_32 (output_bfd, MR_0_3, p);
10171 p += 4;
10172 bfd_put_32 (output_bfd, CMPWI_11_0, p);
10173 p += 4;
10174 bfd_put_32 (output_bfd, ADD_3_12_2, p);
10175 p += 4;
10176 bfd_put_32 (output_bfd, BEQLR, p);
10177 p += 4;
10178 bfd_put_32 (output_bfd, MR_3_0, p);
10179 p += 4;
10180 bfd_put_32 (output_bfd, NOP, p);
10181 p += 4;
10182 }
10183
10184 write_glink_stub (ent, splt, p, info);
10185
10186 if (!bfd_link_pic (info))
10187 /* We only need one non-PIC glink stub. */
10188 break;
10189 }
10190 else
10191 break;
10192 }
10193
10194 if (h->needs_copy)
10195 {
10196 asection *s;
10197 Elf_Internal_Rela rela;
10198 bfd_byte *loc;
10199
10200 /* This symbols needs a copy reloc. Set it up. */
10201
10202 #ifdef DEBUG
10203 fprintf (stderr, ", copy");
10204 #endif
10205
10206 BFD_ASSERT (h->dynindx != -1);
10207
10208 if (ppc_elf_hash_entry (h)->has_sda_refs)
10209 s = htab->relsbss;
10210 else if (h->root.u.def.section == htab->elf.sdynrelro)
10211 s = htab->elf.sreldynrelro;
10212 else
10213 s = htab->elf.srelbss;
10214 BFD_ASSERT (s != NULL);
10215
10216 rela.r_offset = SYM_VAL (h);
10217 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_COPY);
10218 rela.r_addend = 0;
10219 loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
10220 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10221 }
10222
10223 #ifdef DEBUG
10224 fprintf (stderr, "\n");
10225 #endif
10226
10227 return TRUE;
10228 }
10229 \f
10230 static enum elf_reloc_type_class
10231 ppc_elf_reloc_type_class (const struct bfd_link_info *info,
10232 const asection *rel_sec,
10233 const Elf_Internal_Rela *rela)
10234 {
10235 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
10236
10237 if (rel_sec == htab->elf.irelplt)
10238 return reloc_class_ifunc;
10239
10240 switch (ELF32_R_TYPE (rela->r_info))
10241 {
10242 case R_PPC_RELATIVE:
10243 return reloc_class_relative;
10244 case R_PPC_JMP_SLOT:
10245 return reloc_class_plt;
10246 case R_PPC_COPY:
10247 return reloc_class_copy;
10248 default:
10249 return reloc_class_normal;
10250 }
10251 }
10252 \f
10253 /* Finish up the dynamic sections. */
10254
10255 static bfd_boolean
10256 ppc_elf_finish_dynamic_sections (bfd *output_bfd,
10257 struct bfd_link_info *info)
10258 {
10259 asection *sdyn;
10260 struct ppc_elf_link_hash_table *htab;
10261 bfd_vma got;
10262 bfd *dynobj;
10263 bfd_boolean ret = TRUE;
10264
10265 #ifdef DEBUG
10266 fprintf (stderr, "ppc_elf_finish_dynamic_sections called\n");
10267 #endif
10268
10269 htab = ppc_elf_hash_table (info);
10270 dynobj = htab->elf.dynobj;
10271 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
10272
10273 got = 0;
10274 if (htab->elf.hgot != NULL)
10275 got = SYM_VAL (htab->elf.hgot);
10276
10277 if (htab->elf.dynamic_sections_created)
10278 {
10279 Elf32_External_Dyn *dyncon, *dynconend;
10280
10281 BFD_ASSERT (htab->elf.splt != NULL && sdyn != NULL);
10282
10283 dyncon = (Elf32_External_Dyn *) sdyn->contents;
10284 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
10285 for (; dyncon < dynconend; dyncon++)
10286 {
10287 Elf_Internal_Dyn dyn;
10288 asection *s;
10289
10290 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
10291
10292 switch (dyn.d_tag)
10293 {
10294 case DT_PLTGOT:
10295 if (htab->is_vxworks)
10296 s = htab->elf.sgotplt;
10297 else
10298 s = htab->elf.splt;
10299 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
10300 break;
10301
10302 case DT_PLTRELSZ:
10303 dyn.d_un.d_val = htab->elf.srelplt->size;
10304 break;
10305
10306 case DT_JMPREL:
10307 s = htab->elf.srelplt;
10308 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
10309 break;
10310
10311 case DT_PPC_GOT:
10312 dyn.d_un.d_ptr = got;
10313 break;
10314
10315 case DT_TEXTREL:
10316 if (htab->local_ifunc_resolver)
10317 info->callbacks->einfo
10318 (_("%X%P: text relocations and GNU indirect "
10319 "functions will result in a segfault at runtime\n"));
10320 else if (htab->maybe_local_ifunc_resolver)
10321 info->callbacks->einfo
10322 (_("%P: warning: text relocations and GNU indirect "
10323 "functions may result in a segfault at runtime\n"));
10324 continue;
10325
10326 default:
10327 if (htab->is_vxworks
10328 && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn))
10329 break;
10330 continue;
10331 }
10332
10333 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
10334 }
10335 }
10336
10337 if (htab->elf.sgot != NULL
10338 && htab->elf.sgot->output_section != bfd_abs_section_ptr)
10339 {
10340 if (htab->elf.hgot->root.u.def.section == htab->elf.sgot
10341 || htab->elf.hgot->root.u.def.section == htab->elf.sgotplt)
10342 {
10343 unsigned char *p = htab->elf.hgot->root.u.def.section->contents;
10344
10345 p += htab->elf.hgot->root.u.def.value;
10346 if (htab->plt_type == PLT_OLD)
10347 {
10348 /* Add a blrl instruction at _GLOBAL_OFFSET_TABLE_-4
10349 so that a function can easily find the address of
10350 _GLOBAL_OFFSET_TABLE_. */
10351 BFD_ASSERT (htab->elf.hgot->root.u.def.value - 4
10352 < htab->elf.hgot->root.u.def.section->size);
10353 bfd_put_32 (output_bfd, 0x4e800021, p - 4);
10354 }
10355
10356 if (sdyn != NULL)
10357 {
10358 bfd_vma val = sdyn->output_section->vma + sdyn->output_offset;
10359 BFD_ASSERT (htab->elf.hgot->root.u.def.value
10360 < htab->elf.hgot->root.u.def.section->size);
10361 bfd_put_32 (output_bfd, val, p);
10362 }
10363 }
10364 else
10365 {
10366 /* xgettext:c-format */
10367 info->callbacks->einfo (_("%P: %s not defined in linker created %s\n"),
10368 htab->elf.hgot->root.root.string,
10369 (htab->elf.sgotplt != NULL
10370 ? htab->elf.sgotplt->name
10371 : htab->elf.sgot->name));
10372 bfd_set_error (bfd_error_bad_value);
10373 ret = FALSE;
10374 }
10375
10376 elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize = 4;
10377 }
10378
10379 /* Fill in the first entry in the VxWorks procedure linkage table. */
10380 if (htab->is_vxworks
10381 && htab->elf.splt != NULL
10382 && htab->elf.splt->size != 0
10383 && htab->elf.splt->output_section != bfd_abs_section_ptr)
10384 {
10385 asection *splt = htab->elf.splt;
10386 /* Use the right PLT. */
10387 const bfd_vma *plt_entry = (bfd_link_pic (info)
10388 ? ppc_elf_vxworks_pic_plt0_entry
10389 : ppc_elf_vxworks_plt0_entry);
10390
10391 if (!bfd_link_pic (info))
10392 {
10393 bfd_vma got_value = SYM_VAL (htab->elf.hgot);
10394
10395 bfd_put_32 (output_bfd, plt_entry[0] | PPC_HA (got_value),
10396 splt->contents + 0);
10397 bfd_put_32 (output_bfd, plt_entry[1] | PPC_LO (got_value),
10398 splt->contents + 4);
10399 }
10400 else
10401 {
10402 bfd_put_32 (output_bfd, plt_entry[0], splt->contents + 0);
10403 bfd_put_32 (output_bfd, plt_entry[1], splt->contents + 4);
10404 }
10405 bfd_put_32 (output_bfd, plt_entry[2], splt->contents + 8);
10406 bfd_put_32 (output_bfd, plt_entry[3], splt->contents + 12);
10407 bfd_put_32 (output_bfd, plt_entry[4], splt->contents + 16);
10408 bfd_put_32 (output_bfd, plt_entry[5], splt->contents + 20);
10409 bfd_put_32 (output_bfd, plt_entry[6], splt->contents + 24);
10410 bfd_put_32 (output_bfd, plt_entry[7], splt->contents + 28);
10411
10412 if (! bfd_link_pic (info))
10413 {
10414 Elf_Internal_Rela rela;
10415 bfd_byte *loc;
10416
10417 loc = htab->srelplt2->contents;
10418
10419 /* Output the @ha relocation for the first instruction. */
10420 rela.r_offset = (htab->elf.splt->output_section->vma
10421 + htab->elf.splt->output_offset
10422 + 2);
10423 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
10424 rela.r_addend = 0;
10425 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10426 loc += sizeof (Elf32_External_Rela);
10427
10428 /* Output the @l relocation for the second instruction. */
10429 rela.r_offset = (htab->elf.splt->output_section->vma
10430 + htab->elf.splt->output_offset
10431 + 6);
10432 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
10433 rela.r_addend = 0;
10434 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10435 loc += sizeof (Elf32_External_Rela);
10436
10437 /* Fix up the remaining relocations. They may have the wrong
10438 symbol index for _G_O_T_ or _P_L_T_ depending on the order
10439 in which symbols were output. */
10440 while (loc < htab->srelplt2->contents + htab->srelplt2->size)
10441 {
10442 Elf_Internal_Rela rel;
10443
10444 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
10445 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
10446 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
10447 loc += sizeof (Elf32_External_Rela);
10448
10449 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
10450 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
10451 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
10452 loc += sizeof (Elf32_External_Rela);
10453
10454 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
10455 rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_PPC_ADDR32);
10456 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
10457 loc += sizeof (Elf32_External_Rela);
10458 }
10459 }
10460 }
10461
10462 if (htab->glink != NULL
10463 && htab->glink->contents != NULL
10464 && htab->elf.dynamic_sections_created)
10465 {
10466 unsigned char *p;
10467 unsigned char *endp;
10468 bfd_vma res0;
10469 unsigned int i;
10470
10471 /*
10472 * PIC glink code is the following:
10473 *
10474 * # ith PLT code stub.
10475 * addis 11,30,(plt+(i-1)*4-got)@ha
10476 * lwz 11,(plt+(i-1)*4-got)@l(11)
10477 * mtctr 11
10478 * bctr
10479 *
10480 * # A table of branches, one for each plt entry.
10481 * # The idea is that the plt call stub loads ctr and r11 with these
10482 * # addresses, so (r11 - res_0) gives the plt index * 4.
10483 * res_0: b PLTresolve
10484 * res_1: b PLTresolve
10485 * .
10486 * # Some number of entries towards the end can be nops
10487 * res_n_m3: nop
10488 * res_n_m2: nop
10489 * res_n_m1:
10490 *
10491 * PLTresolve:
10492 * addis 11,11,(1f-res_0)@ha
10493 * mflr 0
10494 * bcl 20,31,1f
10495 * 1: addi 11,11,(1b-res_0)@l
10496 * mflr 12
10497 * mtlr 0
10498 * sub 11,11,12 # r11 = index * 4
10499 * addis 12,12,(got+4-1b)@ha
10500 * lwz 0,(got+4-1b)@l(12) # got[1] address of dl_runtime_resolve
10501 * lwz 12,(got+8-1b)@l(12) # got[2] contains the map address
10502 * mtctr 0
10503 * add 0,11,11
10504 * add 11,0,11 # r11 = index * 12 = reloc offset.
10505 * bctr
10506 */
10507 static const unsigned int pic_plt_resolve[] =
10508 {
10509 ADDIS_11_11,
10510 MFLR_0,
10511 BCL_20_31,
10512 ADDI_11_11,
10513 MFLR_12,
10514 MTLR_0,
10515 SUB_11_11_12,
10516 ADDIS_12_12,
10517 LWZ_0_12,
10518 LWZ_12_12,
10519 MTCTR_0,
10520 ADD_0_11_11,
10521 ADD_11_0_11,
10522 BCTR,
10523 NOP,
10524 NOP
10525 };
10526
10527 /*
10528 * Non-PIC glink code is a little simpler.
10529 *
10530 * # ith PLT code stub.
10531 * lis 11,(plt+(i-1)*4)@ha
10532 * lwz 11,(plt+(i-1)*4)@l(11)
10533 * mtctr 11
10534 * bctr
10535 *
10536 * The branch table is the same, then comes
10537 *
10538 * PLTresolve:
10539 * lis 12,(got+4)@ha
10540 * addis 11,11,(-res_0)@ha
10541 * lwz 0,(got+4)@l(12) # got[1] address of dl_runtime_resolve
10542 * addi 11,11,(-res_0)@l # r11 = index * 4
10543 * mtctr 0
10544 * add 0,11,11
10545 * lwz 12,(got+8)@l(12) # got[2] contains the map address
10546 * add 11,0,11 # r11 = index * 12 = reloc offset.
10547 * bctr
10548 */
10549 static const unsigned int plt_resolve[] =
10550 {
10551 LIS_12,
10552 ADDIS_11_11,
10553 LWZ_0_12,
10554 ADDI_11_11,
10555 MTCTR_0,
10556 ADD_0_11_11,
10557 LWZ_12_12,
10558 ADD_11_0_11,
10559 BCTR,
10560 NOP,
10561 NOP,
10562 NOP,
10563 NOP,
10564 NOP,
10565 NOP,
10566 NOP
10567 };
10568
10569 if (ARRAY_SIZE (pic_plt_resolve) != GLINK_PLTRESOLVE / 4)
10570 abort ();
10571 if (ARRAY_SIZE (plt_resolve) != GLINK_PLTRESOLVE / 4)
10572 abort ();
10573
10574 /* Build the branch table, one for each plt entry (less one),
10575 and perhaps some padding. */
10576 p = htab->glink->contents;
10577 p += htab->glink_pltresolve;
10578 endp = htab->glink->contents;
10579 endp += htab->glink->size - GLINK_PLTRESOLVE;
10580 while (p < endp - (htab->params->ppc476_workaround ? 0 : 8 * 4))
10581 {
10582 bfd_put_32 (output_bfd, B + endp - p, p);
10583 p += 4;
10584 }
10585 while (p < endp)
10586 {
10587 bfd_put_32 (output_bfd, NOP, p);
10588 p += 4;
10589 }
10590
10591 res0 = (htab->glink_pltresolve
10592 + htab->glink->output_section->vma
10593 + htab->glink->output_offset);
10594
10595 if (htab->params->ppc476_workaround)
10596 {
10597 /* Ensure that a call stub at the end of a page doesn't
10598 result in prefetch over the end of the page into the
10599 glink branch table. */
10600 bfd_vma pagesize = (bfd_vma) 1 << htab->params->pagesize_p2;
10601 bfd_vma page_addr;
10602 bfd_vma glink_start = (htab->glink->output_section->vma
10603 + htab->glink->output_offset);
10604
10605 for (page_addr = res0 & -pagesize;
10606 page_addr > glink_start;
10607 page_addr -= pagesize)
10608 {
10609 /* We have a plt call stub that may need fixing. */
10610 bfd_byte *loc;
10611 unsigned int insn;
10612
10613 loc = htab->glink->contents + page_addr - 4 - glink_start;
10614 insn = bfd_get_32 (output_bfd, loc);
10615 if (insn == BCTR)
10616 {
10617 /* By alignment, we know that there must be at least
10618 one other call stub before this one. */
10619 insn = bfd_get_32 (output_bfd, loc - 16);
10620 if (insn == BCTR)
10621 bfd_put_32 (output_bfd, B | (-16 & 0x3fffffc), loc);
10622 else
10623 bfd_put_32 (output_bfd, B | (-20 & 0x3fffffc), loc);
10624 }
10625 }
10626 }
10627
10628 /* Last comes the PLTresolve stub. */
10629 if (bfd_link_pic (info))
10630 {
10631 bfd_vma bcl;
10632
10633 for (i = 0; i < ARRAY_SIZE (pic_plt_resolve); i++)
10634 {
10635 unsigned int insn = pic_plt_resolve[i];
10636
10637 if (htab->params->ppc476_workaround && insn == NOP)
10638 insn = BA + 0;
10639 bfd_put_32 (output_bfd, insn, p);
10640 p += 4;
10641 }
10642 p -= 4 * ARRAY_SIZE (pic_plt_resolve);
10643
10644 bcl = (htab->glink->size - GLINK_PLTRESOLVE + 3*4
10645 + htab->glink->output_section->vma
10646 + htab->glink->output_offset);
10647
10648 bfd_put_32 (output_bfd,
10649 ADDIS_11_11 + PPC_HA (bcl - res0), p + 0*4);
10650 bfd_put_32 (output_bfd,
10651 ADDI_11_11 + PPC_LO (bcl - res0), p + 3*4);
10652 bfd_put_32 (output_bfd,
10653 ADDIS_12_12 + PPC_HA (got + 4 - bcl), p + 7*4);
10654 if (PPC_HA (got + 4 - bcl) == PPC_HA (got + 8 - bcl))
10655 {
10656 bfd_put_32 (output_bfd,
10657 LWZ_0_12 + PPC_LO (got + 4 - bcl), p + 8*4);
10658 bfd_put_32 (output_bfd,
10659 LWZ_12_12 + PPC_LO (got + 8 - bcl), p + 9*4);
10660 }
10661 else
10662 {
10663 bfd_put_32 (output_bfd,
10664 LWZU_0_12 + PPC_LO (got + 4 - bcl), p + 8*4);
10665 bfd_put_32 (output_bfd,
10666 LWZ_12_12 + 4, p + 9*4);
10667 }
10668 }
10669 else
10670 {
10671 for (i = 0; i < ARRAY_SIZE (plt_resolve); i++)
10672 {
10673 unsigned int insn = plt_resolve[i];
10674
10675 if (htab->params->ppc476_workaround && insn == NOP)
10676 insn = BA + 0;
10677 bfd_put_32 (output_bfd, insn, p);
10678 p += 4;
10679 }
10680 p -= 4 * ARRAY_SIZE (plt_resolve);
10681
10682 bfd_put_32 (output_bfd,
10683 LIS_12 + PPC_HA (got + 4), p + 0*4);
10684 bfd_put_32 (output_bfd,
10685 ADDIS_11_11 + PPC_HA (-res0), p + 1*4);
10686 bfd_put_32 (output_bfd,
10687 ADDI_11_11 + PPC_LO (-res0), p + 3*4);
10688 if (PPC_HA (got + 4) == PPC_HA (got + 8))
10689 {
10690 bfd_put_32 (output_bfd,
10691 LWZ_0_12 + PPC_LO (got + 4), p + 2*4);
10692 bfd_put_32 (output_bfd,
10693 LWZ_12_12 + PPC_LO (got + 8), p + 6*4);
10694 }
10695 else
10696 {
10697 bfd_put_32 (output_bfd,
10698 LWZU_0_12 + PPC_LO (got + 4), p + 2*4);
10699 bfd_put_32 (output_bfd,
10700 LWZ_12_12 + 4, p + 6*4);
10701 }
10702 }
10703 }
10704
10705 if (htab->glink_eh_frame != NULL
10706 && htab->glink_eh_frame->contents != NULL)
10707 {
10708 unsigned char *p = htab->glink_eh_frame->contents;
10709 bfd_vma val;
10710
10711 p += sizeof (glink_eh_frame_cie);
10712 /* FDE length. */
10713 p += 4;
10714 /* CIE pointer. */
10715 p += 4;
10716 /* Offset to .glink. */
10717 val = (htab->glink->output_section->vma
10718 + htab->glink->output_offset);
10719 val -= (htab->glink_eh_frame->output_section->vma
10720 + htab->glink_eh_frame->output_offset);
10721 val -= p - htab->glink_eh_frame->contents;
10722 bfd_put_32 (htab->elf.dynobj, val, p);
10723
10724 if (htab->glink_eh_frame->sec_info_type == SEC_INFO_TYPE_EH_FRAME
10725 && !_bfd_elf_write_section_eh_frame (output_bfd, info,
10726 htab->glink_eh_frame,
10727 htab->glink_eh_frame->contents))
10728 return FALSE;
10729 }
10730
10731 return ret;
10732 }
10733 \f
10734 #define TARGET_LITTLE_SYM powerpc_elf32_le_vec
10735 #define TARGET_LITTLE_NAME "elf32-powerpcle"
10736 #define TARGET_BIG_SYM powerpc_elf32_vec
10737 #define TARGET_BIG_NAME "elf32-powerpc"
10738 #define ELF_ARCH bfd_arch_powerpc
10739 #define ELF_TARGET_ID PPC32_ELF_DATA
10740 #define ELF_MACHINE_CODE EM_PPC
10741 #ifdef __QNXTARGET__
10742 #define ELF_MAXPAGESIZE 0x1000
10743 #define ELF_COMMONPAGESIZE 0x1000
10744 #else
10745 #define ELF_MAXPAGESIZE 0x10000
10746 #define ELF_COMMONPAGESIZE 0x10000
10747 #endif
10748 #define ELF_MINPAGESIZE 0x1000
10749 #define elf_info_to_howto ppc_elf_info_to_howto
10750
10751 #ifdef EM_CYGNUS_POWERPC
10752 #define ELF_MACHINE_ALT1 EM_CYGNUS_POWERPC
10753 #endif
10754
10755 #ifdef EM_PPC_OLD
10756 #define ELF_MACHINE_ALT2 EM_PPC_OLD
10757 #endif
10758
10759 #define elf_backend_plt_not_loaded 1
10760 #define elf_backend_want_dynrelro 1
10761 #define elf_backend_can_gc_sections 1
10762 #define elf_backend_can_refcount 1
10763 #define elf_backend_rela_normal 1
10764 #define elf_backend_caches_rawsize 1
10765
10766 #define bfd_elf32_mkobject ppc_elf_mkobject
10767 #define bfd_elf32_bfd_merge_private_bfd_data ppc_elf_merge_private_bfd_data
10768 #define bfd_elf32_bfd_relax_section ppc_elf_relax_section
10769 #define bfd_elf32_bfd_reloc_type_lookup ppc_elf_reloc_type_lookup
10770 #define bfd_elf32_bfd_reloc_name_lookup ppc_elf_reloc_name_lookup
10771 #define bfd_elf32_bfd_set_private_flags ppc_elf_set_private_flags
10772 #define bfd_elf32_bfd_link_hash_table_create ppc_elf_link_hash_table_create
10773 #define bfd_elf32_get_synthetic_symtab ppc_elf_get_synthetic_symtab
10774
10775 #define elf_backend_object_p ppc_elf_object_p
10776 #define elf_backend_gc_mark_hook ppc_elf_gc_mark_hook
10777 #define elf_backend_section_from_shdr ppc_elf_section_from_shdr
10778 #define elf_backend_relocate_section ppc_elf_relocate_section
10779 #define elf_backend_create_dynamic_sections ppc_elf_create_dynamic_sections
10780 #define elf_backend_check_relocs ppc_elf_check_relocs
10781 #define elf_backend_relocs_compatible _bfd_elf_relocs_compatible
10782 #define elf_backend_copy_indirect_symbol ppc_elf_copy_indirect_symbol
10783 #define elf_backend_adjust_dynamic_symbol ppc_elf_adjust_dynamic_symbol
10784 #define elf_backend_add_symbol_hook ppc_elf_add_symbol_hook
10785 #define elf_backend_size_dynamic_sections ppc_elf_size_dynamic_sections
10786 #define elf_backend_hash_symbol ppc_elf_hash_symbol
10787 #define elf_backend_finish_dynamic_symbol ppc_elf_finish_dynamic_symbol
10788 #define elf_backend_finish_dynamic_sections ppc_elf_finish_dynamic_sections
10789 #define elf_backend_fake_sections ppc_elf_fake_sections
10790 #define elf_backend_additional_program_headers ppc_elf_additional_program_headers
10791 #define elf_backend_modify_segment_map ppc_elf_modify_segment_map
10792 #define elf_backend_grok_prstatus ppc_elf_grok_prstatus
10793 #define elf_backend_grok_psinfo ppc_elf_grok_psinfo
10794 #define elf_backend_write_core_note ppc_elf_write_core_note
10795 #define elf_backend_reloc_type_class ppc_elf_reloc_type_class
10796 #define elf_backend_begin_write_processing ppc_elf_begin_write_processing
10797 #define elf_backend_final_write_processing ppc_elf_final_write_processing
10798 #define elf_backend_write_section ppc_elf_write_section
10799 #define elf_backend_get_sec_type_attr ppc_elf_get_sec_type_attr
10800 #define elf_backend_plt_sym_val ppc_elf_plt_sym_val
10801 #define elf_backend_action_discarded ppc_elf_action_discarded
10802 #define elf_backend_init_index_section _bfd_elf_init_1_index_section
10803 #define elf_backend_lookup_section_flags_hook ppc_elf_lookup_section_flags
10804
10805 #include "elf32-target.h"
10806
10807 /* FreeBSD Target */
10808
10809 #undef TARGET_LITTLE_SYM
10810 #undef TARGET_LITTLE_NAME
10811
10812 #undef TARGET_BIG_SYM
10813 #define TARGET_BIG_SYM powerpc_elf32_fbsd_vec
10814 #undef TARGET_BIG_NAME
10815 #define TARGET_BIG_NAME "elf32-powerpc-freebsd"
10816
10817 #undef ELF_OSABI
10818 #define ELF_OSABI ELFOSABI_FREEBSD
10819
10820 #undef elf32_bed
10821 #define elf32_bed elf32_powerpc_fbsd_bed
10822
10823 #include "elf32-target.h"
10824
10825 /* VxWorks Target */
10826
10827 #undef TARGET_LITTLE_SYM
10828 #undef TARGET_LITTLE_NAME
10829
10830 #undef TARGET_BIG_SYM
10831 #define TARGET_BIG_SYM powerpc_elf32_vxworks_vec
10832 #undef TARGET_BIG_NAME
10833 #define TARGET_BIG_NAME "elf32-powerpc-vxworks"
10834
10835 #undef ELF_OSABI
10836
10837 /* VxWorks uses the elf default section flags for .plt. */
10838 static const struct bfd_elf_special_section *
10839 ppc_elf_vxworks_get_sec_type_attr (bfd *abfd, asection *sec)
10840 {
10841 if (sec->name == NULL)
10842 return NULL;
10843
10844 if (strcmp (sec->name, ".plt") == 0)
10845 return _bfd_elf_get_sec_type_attr (abfd, sec);
10846
10847 return ppc_elf_get_sec_type_attr (abfd, sec);
10848 }
10849
10850 /* Like ppc_elf_link_hash_table_create, but overrides
10851 appropriately for VxWorks. */
10852 static struct bfd_link_hash_table *
10853 ppc_elf_vxworks_link_hash_table_create (bfd *abfd)
10854 {
10855 struct bfd_link_hash_table *ret;
10856
10857 ret = ppc_elf_link_hash_table_create (abfd);
10858 if (ret)
10859 {
10860 struct ppc_elf_link_hash_table *htab
10861 = (struct ppc_elf_link_hash_table *)ret;
10862 htab->is_vxworks = 1;
10863 htab->plt_type = PLT_VXWORKS;
10864 htab->plt_entry_size = VXWORKS_PLT_ENTRY_SIZE;
10865 htab->plt_slot_size = VXWORKS_PLT_ENTRY_SIZE;
10866 htab->plt_initial_entry_size = VXWORKS_PLT_INITIAL_ENTRY_SIZE;
10867 }
10868 return ret;
10869 }
10870
10871 /* Tweak magic VxWorks symbols as they are loaded. */
10872 static bfd_boolean
10873 ppc_elf_vxworks_add_symbol_hook (bfd *abfd,
10874 struct bfd_link_info *info,
10875 Elf_Internal_Sym *sym,
10876 const char **namep,
10877 flagword *flagsp,
10878 asection **secp,
10879 bfd_vma *valp)
10880 {
10881 if (!elf_vxworks_add_symbol_hook (abfd, info, sym, namep, flagsp, secp,
10882 valp))
10883 return FALSE;
10884
10885 return ppc_elf_add_symbol_hook (abfd, info, sym, namep, flagsp, secp, valp);
10886 }
10887
10888 static void
10889 ppc_elf_vxworks_final_write_processing (bfd *abfd, bfd_boolean linker)
10890 {
10891 ppc_elf_final_write_processing (abfd, linker);
10892 elf_vxworks_final_write_processing (abfd, linker);
10893 }
10894
10895 /* On VxWorks, we emit relocations against _PROCEDURE_LINKAGE_TABLE_, so
10896 define it. */
10897 #undef elf_backend_want_plt_sym
10898 #define elf_backend_want_plt_sym 1
10899 #undef elf_backend_want_got_plt
10900 #define elf_backend_want_got_plt 1
10901 #undef elf_backend_got_symbol_offset
10902 #define elf_backend_got_symbol_offset 0
10903 #undef elf_backend_plt_not_loaded
10904 #define elf_backend_plt_not_loaded 0
10905 #undef elf_backend_plt_readonly
10906 #define elf_backend_plt_readonly 1
10907 #undef elf_backend_got_header_size
10908 #define elf_backend_got_header_size 12
10909 #undef elf_backend_dtrel_excludes_plt
10910 #define elf_backend_dtrel_excludes_plt 1
10911
10912 #undef bfd_elf32_get_synthetic_symtab
10913
10914 #undef bfd_elf32_bfd_link_hash_table_create
10915 #define bfd_elf32_bfd_link_hash_table_create \
10916 ppc_elf_vxworks_link_hash_table_create
10917 #undef elf_backend_add_symbol_hook
10918 #define elf_backend_add_symbol_hook \
10919 ppc_elf_vxworks_add_symbol_hook
10920 #undef elf_backend_link_output_symbol_hook
10921 #define elf_backend_link_output_symbol_hook \
10922 elf_vxworks_link_output_symbol_hook
10923 #undef elf_backend_final_write_processing
10924 #define elf_backend_final_write_processing \
10925 ppc_elf_vxworks_final_write_processing
10926 #undef elf_backend_get_sec_type_attr
10927 #define elf_backend_get_sec_type_attr \
10928 ppc_elf_vxworks_get_sec_type_attr
10929 #undef elf_backend_emit_relocs
10930 #define elf_backend_emit_relocs \
10931 elf_vxworks_emit_relocs
10932
10933 #undef elf32_bed
10934 #define elf32_bed ppc_elf_vxworks_bed
10935 #undef elf_backend_post_process_headers
10936
10937 #include "elf32-target.h"
GDB Binutils - Deliverables
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