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Remove syntactic sugar
[deliverable/binutils-gdb.git] / bfd / elf32-ppc.c
1 /* PowerPC-specific support for 32-bit ELF
2 Copyright (C) 1994-2016 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
39 typedef enum split16_format_type
40 {
41 split16a_type = 0,
42 split16d_type
43 }
44 split16_format_type;
45
46 /* RELA relocations are used here. */
47
48 static bfd_reloc_status_type ppc_elf_addr16_ha_reloc
49 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
50 static bfd_reloc_status_type ppc_elf_unhandled_reloc
51 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
52
53 /* Branch prediction bit for branch taken relocs. */
54 #define BRANCH_PREDICT_BIT 0x200000
55 /* Mask to set RA in memory instructions. */
56 #define RA_REGISTER_MASK 0x001f0000
57 /* Value to shift register by to insert RA. */
58 #define RA_REGISTER_SHIFT 16
59
60 /* The name of the dynamic interpreter. This is put in the .interp
61 section. */
62 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
63
64 /* For old-style PLT. */
65 /* The number of single-slot PLT entries (the rest use two slots). */
66 #define PLT_NUM_SINGLE_ENTRIES 8192
67
68 /* For new-style .glink and .plt. */
69 #define GLINK_PLTRESOLVE 16*4
70 #define GLINK_ENTRY_SIZE 4*4
71 #define TLS_GET_ADDR_GLINK_SIZE 12*4
72
73 /* VxWorks uses its own plt layout, filled in by the static linker. */
74
75 /* The standard VxWorks PLT entry. */
76 #define VXWORKS_PLT_ENTRY_SIZE 32
77 static const bfd_vma ppc_elf_vxworks_plt_entry
78 [VXWORKS_PLT_ENTRY_SIZE / 4] =
79 {
80 0x3d800000, /* lis r12,0 */
81 0x818c0000, /* lwz r12,0(r12) */
82 0x7d8903a6, /* mtctr r12 */
83 0x4e800420, /* bctr */
84 0x39600000, /* li r11,0 */
85 0x48000000, /* b 14 <.PLT0resolve+0x4> */
86 0x60000000, /* nop */
87 0x60000000, /* nop */
88 };
89 static const bfd_vma ppc_elf_vxworks_pic_plt_entry
90 [VXWORKS_PLT_ENTRY_SIZE / 4] =
91 {
92 0x3d9e0000, /* addis r12,r30,0 */
93 0x818c0000, /* lwz r12,0(r12) */
94 0x7d8903a6, /* mtctr r12 */
95 0x4e800420, /* bctr */
96 0x39600000, /* li r11,0 */
97 0x48000000, /* b 14 <.PLT0resolve+0x4> 14: R_PPC_REL24 .PLTresolve */
98 0x60000000, /* nop */
99 0x60000000, /* nop */
100 };
101
102 /* The initial VxWorks PLT entry. */
103 #define VXWORKS_PLT_INITIAL_ENTRY_SIZE 32
104 static const bfd_vma ppc_elf_vxworks_plt0_entry
105 [VXWORKS_PLT_INITIAL_ENTRY_SIZE / 4] =
106 {
107 0x3d800000, /* lis r12,0 */
108 0x398c0000, /* addi r12,r12,0 */
109 0x800c0008, /* lwz r0,8(r12) */
110 0x7c0903a6, /* mtctr r0 */
111 0x818c0004, /* lwz r12,4(r12) */
112 0x4e800420, /* bctr */
113 0x60000000, /* nop */
114 0x60000000, /* nop */
115 };
116 static const bfd_vma ppc_elf_vxworks_pic_plt0_entry
117 [VXWORKS_PLT_INITIAL_ENTRY_SIZE / 4] =
118 {
119 0x819e0008, /* lwz r12,8(r30) */
120 0x7d8903a6, /* mtctr r12 */
121 0x819e0004, /* lwz r12,4(r30) */
122 0x4e800420, /* bctr */
123 0x60000000, /* nop */
124 0x60000000, /* nop */
125 0x60000000, /* nop */
126 0x60000000, /* nop */
127 };
128
129 /* For executables, we have some additional relocations in
130 .rela.plt.unloaded, for the kernel loader. */
131
132 /* The number of non-JMP_SLOT relocations per PLT0 slot. */
133 #define VXWORKS_PLT_NON_JMP_SLOT_RELOCS 3
134 /* The number of relocations in the PLTResolve slot. */
135 #define VXWORKS_PLTRESOLVE_RELOCS 2
136 /* The number of relocations in the PLTResolve slot when when creating
137 a shared library. */
138 #define VXWORKS_PLTRESOLVE_RELOCS_SHLIB 0
139
140 /* Some instructions. */
141 #define ADDIS_11_11 0x3d6b0000
142 #define ADDIS_11_30 0x3d7e0000
143 #define ADDIS_12_12 0x3d8c0000
144 #define ADDI_11_11 0x396b0000
145 #define ADD_0_11_11 0x7c0b5a14
146 #define ADD_3_12_2 0x7c6c1214
147 #define ADD_11_0_11 0x7d605a14
148 #define B 0x48000000
149 #define BA 0x48000002
150 #define BCL_20_31 0x429f0005
151 #define BCTR 0x4e800420
152 #define BEQLR 0x4d820020
153 #define CMPWI_11_0 0x2c0b0000
154 #define LIS_11 0x3d600000
155 #define LIS_12 0x3d800000
156 #define LWZU_0_12 0x840c0000
157 #define LWZ_0_12 0x800c0000
158 #define LWZ_11_3 0x81630000
159 #define LWZ_11_11 0x816b0000
160 #define LWZ_11_30 0x817e0000
161 #define LWZ_12_3 0x81830000
162 #define LWZ_12_12 0x818c0000
163 #define MR_0_3 0x7c601b78
164 #define MR_3_0 0x7c030378
165 #define MFLR_0 0x7c0802a6
166 #define MFLR_12 0x7d8802a6
167 #define MTCTR_0 0x7c0903a6
168 #define MTCTR_11 0x7d6903a6
169 #define MTLR_0 0x7c0803a6
170 #define NOP 0x60000000
171 #define SUB_11_11_12 0x7d6c5850
172
173 /* Offset of tp and dtp pointers from start of TLS block. */
174 #define TP_OFFSET 0x7000
175 #define DTP_OFFSET 0x8000
176
177 /* The value of a defined global symbol. */
178 #define SYM_VAL(SYM) \
179 ((SYM)->root.u.def.section->output_section->vma \
180 + (SYM)->root.u.def.section->output_offset \
181 + (SYM)->root.u.def.value)
182 \f
183 static reloc_howto_type *ppc_elf_howto_table[R_PPC_max];
184
185 static reloc_howto_type ppc_elf_howto_raw[] = {
186 /* This reloc does nothing. */
187 HOWTO (R_PPC_NONE, /* type */
188 0, /* rightshift */
189 3, /* size (0 = byte, 1 = short, 2 = long) */
190 0, /* bitsize */
191 FALSE, /* pc_relative */
192 0, /* bitpos */
193 complain_overflow_dont, /* complain_on_overflow */
194 bfd_elf_generic_reloc, /* special_function */
195 "R_PPC_NONE", /* name */
196 FALSE, /* partial_inplace */
197 0, /* src_mask */
198 0, /* dst_mask */
199 FALSE), /* pcrel_offset */
200
201 /* A standard 32 bit relocation. */
202 HOWTO (R_PPC_ADDR32, /* type */
203 0, /* rightshift */
204 2, /* size (0 = byte, 1 = short, 2 = long) */
205 32, /* bitsize */
206 FALSE, /* pc_relative */
207 0, /* bitpos */
208 complain_overflow_dont, /* complain_on_overflow */
209 bfd_elf_generic_reloc, /* special_function */
210 "R_PPC_ADDR32", /* name */
211 FALSE, /* partial_inplace */
212 0, /* src_mask */
213 0xffffffff, /* dst_mask */
214 FALSE), /* pcrel_offset */
215
216 /* An absolute 26 bit branch; the lower two bits must be zero.
217 FIXME: we don't check that, we just clear them. */
218 HOWTO (R_PPC_ADDR24, /* type */
219 0, /* rightshift */
220 2, /* size (0 = byte, 1 = short, 2 = long) */
221 26, /* bitsize */
222 FALSE, /* pc_relative */
223 0, /* bitpos */
224 complain_overflow_signed, /* complain_on_overflow */
225 bfd_elf_generic_reloc, /* special_function */
226 "R_PPC_ADDR24", /* name */
227 FALSE, /* partial_inplace */
228 0, /* src_mask */
229 0x3fffffc, /* dst_mask */
230 FALSE), /* pcrel_offset */
231
232 /* A standard 16 bit relocation. */
233 HOWTO (R_PPC_ADDR16, /* type */
234 0, /* rightshift */
235 1, /* size (0 = byte, 1 = short, 2 = long) */
236 16, /* bitsize */
237 FALSE, /* pc_relative */
238 0, /* bitpos */
239 complain_overflow_bitfield, /* complain_on_overflow */
240 bfd_elf_generic_reloc, /* special_function */
241 "R_PPC_ADDR16", /* name */
242 FALSE, /* partial_inplace */
243 0, /* src_mask */
244 0xffff, /* dst_mask */
245 FALSE), /* pcrel_offset */
246
247 /* A 16 bit relocation without overflow. */
248 HOWTO (R_PPC_ADDR16_LO, /* type */
249 0, /* rightshift */
250 1, /* size (0 = byte, 1 = short, 2 = long) */
251 16, /* bitsize */
252 FALSE, /* pc_relative */
253 0, /* bitpos */
254 complain_overflow_dont,/* complain_on_overflow */
255 bfd_elf_generic_reloc, /* special_function */
256 "R_PPC_ADDR16_LO", /* name */
257 FALSE, /* partial_inplace */
258 0, /* src_mask */
259 0xffff, /* dst_mask */
260 FALSE), /* pcrel_offset */
261
262 /* The high order 16 bits of an address. */
263 HOWTO (R_PPC_ADDR16_HI, /* type */
264 16, /* rightshift */
265 1, /* size (0 = byte, 1 = short, 2 = long) */
266 16, /* bitsize */
267 FALSE, /* pc_relative */
268 0, /* bitpos */
269 complain_overflow_dont, /* complain_on_overflow */
270 bfd_elf_generic_reloc, /* special_function */
271 "R_PPC_ADDR16_HI", /* name */
272 FALSE, /* partial_inplace */
273 0, /* src_mask */
274 0xffff, /* dst_mask */
275 FALSE), /* pcrel_offset */
276
277 /* The high order 16 bits of an address, plus 1 if the contents of
278 the low 16 bits, treated as a signed number, is negative. */
279 HOWTO (R_PPC_ADDR16_HA, /* type */
280 16, /* rightshift */
281 1, /* size (0 = byte, 1 = short, 2 = long) */
282 16, /* bitsize */
283 FALSE, /* pc_relative */
284 0, /* bitpos */
285 complain_overflow_dont, /* complain_on_overflow */
286 ppc_elf_addr16_ha_reloc, /* special_function */
287 "R_PPC_ADDR16_HA", /* name */
288 FALSE, /* partial_inplace */
289 0, /* src_mask */
290 0xffff, /* dst_mask */
291 FALSE), /* pcrel_offset */
292
293 /* An absolute 16 bit branch; the lower two bits must be zero.
294 FIXME: we don't check that, we just clear them. */
295 HOWTO (R_PPC_ADDR14, /* type */
296 0, /* rightshift */
297 2, /* size (0 = byte, 1 = short, 2 = long) */
298 16, /* bitsize */
299 FALSE, /* pc_relative */
300 0, /* bitpos */
301 complain_overflow_signed, /* complain_on_overflow */
302 bfd_elf_generic_reloc, /* special_function */
303 "R_PPC_ADDR14", /* name */
304 FALSE, /* partial_inplace */
305 0, /* src_mask */
306 0xfffc, /* dst_mask */
307 FALSE), /* pcrel_offset */
308
309 /* An absolute 16 bit branch, for which bit 10 should be set to
310 indicate that the branch is expected to be taken. The lower two
311 bits must be zero. */
312 HOWTO (R_PPC_ADDR14_BRTAKEN, /* type */
313 0, /* rightshift */
314 2, /* size (0 = byte, 1 = short, 2 = long) */
315 16, /* bitsize */
316 FALSE, /* pc_relative */
317 0, /* bitpos */
318 complain_overflow_signed, /* complain_on_overflow */
319 bfd_elf_generic_reloc, /* special_function */
320 "R_PPC_ADDR14_BRTAKEN",/* name */
321 FALSE, /* partial_inplace */
322 0, /* src_mask */
323 0xfffc, /* dst_mask */
324 FALSE), /* pcrel_offset */
325
326 /* An absolute 16 bit branch, for which bit 10 should be set to
327 indicate that the branch is not expected to be taken. The lower
328 two bits must be zero. */
329 HOWTO (R_PPC_ADDR14_BRNTAKEN, /* type */
330 0, /* rightshift */
331 2, /* size (0 = byte, 1 = short, 2 = long) */
332 16, /* bitsize */
333 FALSE, /* pc_relative */
334 0, /* bitpos */
335 complain_overflow_signed, /* complain_on_overflow */
336 bfd_elf_generic_reloc, /* special_function */
337 "R_PPC_ADDR14_BRNTAKEN",/* name */
338 FALSE, /* partial_inplace */
339 0, /* src_mask */
340 0xfffc, /* dst_mask */
341 FALSE), /* pcrel_offset */
342
343 /* A relative 26 bit branch; the lower two bits must be zero. */
344 HOWTO (R_PPC_REL24, /* type */
345 0, /* rightshift */
346 2, /* size (0 = byte, 1 = short, 2 = long) */
347 26, /* bitsize */
348 TRUE, /* pc_relative */
349 0, /* bitpos */
350 complain_overflow_signed, /* complain_on_overflow */
351 bfd_elf_generic_reloc, /* special_function */
352 "R_PPC_REL24", /* name */
353 FALSE, /* partial_inplace */
354 0, /* src_mask */
355 0x3fffffc, /* dst_mask */
356 TRUE), /* pcrel_offset */
357
358 /* A relative 16 bit branch; the lower two bits must be zero. */
359 HOWTO (R_PPC_REL14, /* type */
360 0, /* rightshift */
361 2, /* size (0 = byte, 1 = short, 2 = long) */
362 16, /* bitsize */
363 TRUE, /* pc_relative */
364 0, /* bitpos */
365 complain_overflow_signed, /* complain_on_overflow */
366 bfd_elf_generic_reloc, /* special_function */
367 "R_PPC_REL14", /* name */
368 FALSE, /* partial_inplace */
369 0, /* src_mask */
370 0xfffc, /* dst_mask */
371 TRUE), /* pcrel_offset */
372
373 /* A relative 16 bit branch. Bit 10 should be set to indicate that
374 the branch is expected to be taken. The lower two bits must be
375 zero. */
376 HOWTO (R_PPC_REL14_BRTAKEN, /* type */
377 0, /* rightshift */
378 2, /* size (0 = byte, 1 = short, 2 = long) */
379 16, /* bitsize */
380 TRUE, /* pc_relative */
381 0, /* bitpos */
382 complain_overflow_signed, /* complain_on_overflow */
383 bfd_elf_generic_reloc, /* special_function */
384 "R_PPC_REL14_BRTAKEN", /* name */
385 FALSE, /* partial_inplace */
386 0, /* src_mask */
387 0xfffc, /* dst_mask */
388 TRUE), /* pcrel_offset */
389
390 /* A relative 16 bit branch. Bit 10 should be set to indicate that
391 the branch is not expected to be taken. The lower two bits must
392 be zero. */
393 HOWTO (R_PPC_REL14_BRNTAKEN, /* type */
394 0, /* rightshift */
395 2, /* size (0 = byte, 1 = short, 2 = long) */
396 16, /* bitsize */
397 TRUE, /* pc_relative */
398 0, /* bitpos */
399 complain_overflow_signed, /* complain_on_overflow */
400 bfd_elf_generic_reloc, /* special_function */
401 "R_PPC_REL14_BRNTAKEN",/* name */
402 FALSE, /* partial_inplace */
403 0, /* src_mask */
404 0xfffc, /* dst_mask */
405 TRUE), /* pcrel_offset */
406
407 /* Like R_PPC_ADDR16, but referring to the GOT table entry for the
408 symbol. */
409 HOWTO (R_PPC_GOT16, /* type */
410 0, /* rightshift */
411 1, /* size (0 = byte, 1 = short, 2 = long) */
412 16, /* bitsize */
413 FALSE, /* pc_relative */
414 0, /* bitpos */
415 complain_overflow_signed, /* complain_on_overflow */
416 ppc_elf_unhandled_reloc, /* special_function */
417 "R_PPC_GOT16", /* name */
418 FALSE, /* partial_inplace */
419 0, /* src_mask */
420 0xffff, /* dst_mask */
421 FALSE), /* pcrel_offset */
422
423 /* Like R_PPC_ADDR16_LO, but referring to the GOT table entry for
424 the symbol. */
425 HOWTO (R_PPC_GOT16_LO, /* type */
426 0, /* rightshift */
427 1, /* size (0 = byte, 1 = short, 2 = long) */
428 16, /* bitsize */
429 FALSE, /* pc_relative */
430 0, /* bitpos */
431 complain_overflow_dont, /* complain_on_overflow */
432 ppc_elf_unhandled_reloc, /* special_function */
433 "R_PPC_GOT16_LO", /* name */
434 FALSE, /* partial_inplace */
435 0, /* src_mask */
436 0xffff, /* dst_mask */
437 FALSE), /* pcrel_offset */
438
439 /* Like R_PPC_ADDR16_HI, but referring to the GOT table entry for
440 the symbol. */
441 HOWTO (R_PPC_GOT16_HI, /* type */
442 16, /* rightshift */
443 1, /* size (0 = byte, 1 = short, 2 = long) */
444 16, /* bitsize */
445 FALSE, /* pc_relative */
446 0, /* bitpos */
447 complain_overflow_dont, /* complain_on_overflow */
448 ppc_elf_unhandled_reloc, /* special_function */
449 "R_PPC_GOT16_HI", /* name */
450 FALSE, /* partial_inplace */
451 0, /* src_mask */
452 0xffff, /* dst_mask */
453 FALSE), /* pcrel_offset */
454
455 /* Like R_PPC_ADDR16_HA, but referring to the GOT table entry for
456 the symbol. */
457 HOWTO (R_PPC_GOT16_HA, /* type */
458 16, /* rightshift */
459 1, /* size (0 = byte, 1 = short, 2 = long) */
460 16, /* bitsize */
461 FALSE, /* pc_relative */
462 0, /* bitpos */
463 complain_overflow_dont, /* complain_on_overflow */
464 ppc_elf_unhandled_reloc, /* special_function */
465 "R_PPC_GOT16_HA", /* name */
466 FALSE, /* partial_inplace */
467 0, /* src_mask */
468 0xffff, /* dst_mask */
469 FALSE), /* pcrel_offset */
470
471 /* Like R_PPC_REL24, but referring to the procedure linkage table
472 entry for the symbol. */
473 HOWTO (R_PPC_PLTREL24, /* type */
474 0, /* rightshift */
475 2, /* size (0 = byte, 1 = short, 2 = long) */
476 26, /* bitsize */
477 TRUE, /* pc_relative */
478 0, /* bitpos */
479 complain_overflow_signed, /* complain_on_overflow */
480 ppc_elf_unhandled_reloc, /* special_function */
481 "R_PPC_PLTREL24", /* name */
482 FALSE, /* partial_inplace */
483 0, /* src_mask */
484 0x3fffffc, /* dst_mask */
485 TRUE), /* pcrel_offset */
486
487 /* This is used only by the dynamic linker. The symbol should exist
488 both in the object being run and in some shared library. The
489 dynamic linker copies the data addressed by the symbol from the
490 shared library into the object, because the object being
491 run has to have the data at some particular address. */
492 HOWTO (R_PPC_COPY, /* type */
493 0, /* rightshift */
494 2, /* size (0 = byte, 1 = short, 2 = long) */
495 32, /* bitsize */
496 FALSE, /* pc_relative */
497 0, /* bitpos */
498 complain_overflow_dont, /* complain_on_overflow */
499 ppc_elf_unhandled_reloc, /* special_function */
500 "R_PPC_COPY", /* name */
501 FALSE, /* partial_inplace */
502 0, /* src_mask */
503 0, /* dst_mask */
504 FALSE), /* pcrel_offset */
505
506 /* Like R_PPC_ADDR32, but used when setting global offset table
507 entries. */
508 HOWTO (R_PPC_GLOB_DAT, /* type */
509 0, /* rightshift */
510 2, /* size (0 = byte, 1 = short, 2 = long) */
511 32, /* bitsize */
512 FALSE, /* pc_relative */
513 0, /* bitpos */
514 complain_overflow_dont, /* complain_on_overflow */
515 ppc_elf_unhandled_reloc, /* special_function */
516 "R_PPC_GLOB_DAT", /* name */
517 FALSE, /* partial_inplace */
518 0, /* src_mask */
519 0xffffffff, /* dst_mask */
520 FALSE), /* pcrel_offset */
521
522 /* Marks a procedure linkage table entry for a symbol. */
523 HOWTO (R_PPC_JMP_SLOT, /* type */
524 0, /* rightshift */
525 2, /* size (0 = byte, 1 = short, 2 = long) */
526 32, /* bitsize */
527 FALSE, /* pc_relative */
528 0, /* bitpos */
529 complain_overflow_dont, /* complain_on_overflow */
530 ppc_elf_unhandled_reloc, /* special_function */
531 "R_PPC_JMP_SLOT", /* name */
532 FALSE, /* partial_inplace */
533 0, /* src_mask */
534 0, /* dst_mask */
535 FALSE), /* pcrel_offset */
536
537 /* Used only by the dynamic linker. When the object is run, this
538 longword is set to the load address of the object, plus the
539 addend. */
540 HOWTO (R_PPC_RELATIVE, /* type */
541 0, /* rightshift */
542 2, /* size (0 = byte, 1 = short, 2 = long) */
543 32, /* bitsize */
544 FALSE, /* pc_relative */
545 0, /* bitpos */
546 complain_overflow_dont, /* complain_on_overflow */
547 bfd_elf_generic_reloc, /* special_function */
548 "R_PPC_RELATIVE", /* name */
549 FALSE, /* partial_inplace */
550 0, /* src_mask */
551 0xffffffff, /* dst_mask */
552 FALSE), /* pcrel_offset */
553
554 /* Like R_PPC_REL24, but uses the value of the symbol within the
555 object rather than the final value. Normally used for
556 _GLOBAL_OFFSET_TABLE_. */
557 HOWTO (R_PPC_LOCAL24PC, /* type */
558 0, /* rightshift */
559 2, /* size (0 = byte, 1 = short, 2 = long) */
560 26, /* bitsize */
561 TRUE, /* pc_relative */
562 0, /* bitpos */
563 complain_overflow_signed, /* complain_on_overflow */
564 bfd_elf_generic_reloc, /* special_function */
565 "R_PPC_LOCAL24PC", /* name */
566 FALSE, /* partial_inplace */
567 0, /* src_mask */
568 0x3fffffc, /* dst_mask */
569 TRUE), /* pcrel_offset */
570
571 /* Like R_PPC_ADDR32, but may be unaligned. */
572 HOWTO (R_PPC_UADDR32, /* type */
573 0, /* rightshift */
574 2, /* size (0 = byte, 1 = short, 2 = long) */
575 32, /* bitsize */
576 FALSE, /* pc_relative */
577 0, /* bitpos */
578 complain_overflow_dont, /* complain_on_overflow */
579 bfd_elf_generic_reloc, /* special_function */
580 "R_PPC_UADDR32", /* name */
581 FALSE, /* partial_inplace */
582 0, /* src_mask */
583 0xffffffff, /* dst_mask */
584 FALSE), /* pcrel_offset */
585
586 /* Like R_PPC_ADDR16, but may be unaligned. */
587 HOWTO (R_PPC_UADDR16, /* type */
588 0, /* rightshift */
589 1, /* size (0 = byte, 1 = short, 2 = long) */
590 16, /* bitsize */
591 FALSE, /* pc_relative */
592 0, /* bitpos */
593 complain_overflow_bitfield, /* complain_on_overflow */
594 bfd_elf_generic_reloc, /* special_function */
595 "R_PPC_UADDR16", /* name */
596 FALSE, /* partial_inplace */
597 0, /* src_mask */
598 0xffff, /* dst_mask */
599 FALSE), /* pcrel_offset */
600
601 /* 32-bit PC relative */
602 HOWTO (R_PPC_REL32, /* type */
603 0, /* rightshift */
604 2, /* size (0 = byte, 1 = short, 2 = long) */
605 32, /* bitsize */
606 TRUE, /* pc_relative */
607 0, /* bitpos */
608 complain_overflow_dont, /* complain_on_overflow */
609 bfd_elf_generic_reloc, /* special_function */
610 "R_PPC_REL32", /* name */
611 FALSE, /* partial_inplace */
612 0, /* src_mask */
613 0xffffffff, /* dst_mask */
614 TRUE), /* pcrel_offset */
615
616 /* 32-bit relocation to the symbol's procedure linkage table.
617 FIXME: not supported. */
618 HOWTO (R_PPC_PLT32, /* type */
619 0, /* rightshift */
620 2, /* size (0 = byte, 1 = short, 2 = long) */
621 32, /* bitsize */
622 FALSE, /* pc_relative */
623 0, /* bitpos */
624 complain_overflow_dont, /* complain_on_overflow */
625 ppc_elf_unhandled_reloc, /* special_function */
626 "R_PPC_PLT32", /* name */
627 FALSE, /* partial_inplace */
628 0, /* src_mask */
629 0, /* dst_mask */
630 FALSE), /* pcrel_offset */
631
632 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
633 FIXME: not supported. */
634 HOWTO (R_PPC_PLTREL32, /* type */
635 0, /* rightshift */
636 2, /* size (0 = byte, 1 = short, 2 = long) */
637 32, /* bitsize */
638 TRUE, /* pc_relative */
639 0, /* bitpos */
640 complain_overflow_dont, /* complain_on_overflow */
641 ppc_elf_unhandled_reloc, /* special_function */
642 "R_PPC_PLTREL32", /* name */
643 FALSE, /* partial_inplace */
644 0, /* src_mask */
645 0, /* dst_mask */
646 TRUE), /* pcrel_offset */
647
648 /* Like R_PPC_ADDR16_LO, but referring to the PLT table entry for
649 the symbol. */
650 HOWTO (R_PPC_PLT16_LO, /* type */
651 0, /* rightshift */
652 1, /* size (0 = byte, 1 = short, 2 = long) */
653 16, /* bitsize */
654 FALSE, /* pc_relative */
655 0, /* bitpos */
656 complain_overflow_dont, /* complain_on_overflow */
657 ppc_elf_unhandled_reloc, /* special_function */
658 "R_PPC_PLT16_LO", /* name */
659 FALSE, /* partial_inplace */
660 0, /* src_mask */
661 0xffff, /* dst_mask */
662 FALSE), /* pcrel_offset */
663
664 /* Like R_PPC_ADDR16_HI, but referring to the PLT table entry for
665 the symbol. */
666 HOWTO (R_PPC_PLT16_HI, /* type */
667 16, /* rightshift */
668 1, /* size (0 = byte, 1 = short, 2 = long) */
669 16, /* bitsize */
670 FALSE, /* pc_relative */
671 0, /* bitpos */
672 complain_overflow_dont, /* complain_on_overflow */
673 ppc_elf_unhandled_reloc, /* special_function */
674 "R_PPC_PLT16_HI", /* name */
675 FALSE, /* partial_inplace */
676 0, /* src_mask */
677 0xffff, /* dst_mask */
678 FALSE), /* pcrel_offset */
679
680 /* Like R_PPC_ADDR16_HA, but referring to the PLT table entry for
681 the symbol. */
682 HOWTO (R_PPC_PLT16_HA, /* type */
683 16, /* rightshift */
684 1, /* size (0 = byte, 1 = short, 2 = long) */
685 16, /* bitsize */
686 FALSE, /* pc_relative */
687 0, /* bitpos */
688 complain_overflow_dont, /* complain_on_overflow */
689 ppc_elf_unhandled_reloc, /* special_function */
690 "R_PPC_PLT16_HA", /* name */
691 FALSE, /* partial_inplace */
692 0, /* src_mask */
693 0xffff, /* dst_mask */
694 FALSE), /* pcrel_offset */
695
696 /* A sign-extended 16 bit value relative to _SDA_BASE_, for use with
697 small data items. */
698 HOWTO (R_PPC_SDAREL16, /* type */
699 0, /* rightshift */
700 1, /* size (0 = byte, 1 = short, 2 = long) */
701 16, /* bitsize */
702 FALSE, /* pc_relative */
703 0, /* bitpos */
704 complain_overflow_signed, /* complain_on_overflow */
705 ppc_elf_unhandled_reloc, /* special_function */
706 "R_PPC_SDAREL16", /* name */
707 FALSE, /* partial_inplace */
708 0, /* src_mask */
709 0xffff, /* dst_mask */
710 FALSE), /* pcrel_offset */
711
712 /* 16-bit section relative relocation. */
713 HOWTO (R_PPC_SECTOFF, /* type */
714 0, /* rightshift */
715 1, /* size (0 = byte, 1 = short, 2 = long) */
716 16, /* bitsize */
717 FALSE, /* pc_relative */
718 0, /* bitpos */
719 complain_overflow_signed, /* complain_on_overflow */
720 ppc_elf_unhandled_reloc, /* special_function */
721 "R_PPC_SECTOFF", /* name */
722 FALSE, /* partial_inplace */
723 0, /* src_mask */
724 0xffff, /* dst_mask */
725 FALSE), /* pcrel_offset */
726
727 /* 16-bit lower half section relative relocation. */
728 HOWTO (R_PPC_SECTOFF_LO, /* type */
729 0, /* rightshift */
730 1, /* size (0 = byte, 1 = short, 2 = long) */
731 16, /* bitsize */
732 FALSE, /* pc_relative */
733 0, /* bitpos */
734 complain_overflow_dont, /* complain_on_overflow */
735 ppc_elf_unhandled_reloc, /* special_function */
736 "R_PPC_SECTOFF_LO", /* name */
737 FALSE, /* partial_inplace */
738 0, /* src_mask */
739 0xffff, /* dst_mask */
740 FALSE), /* pcrel_offset */
741
742 /* 16-bit upper half section relative relocation. */
743 HOWTO (R_PPC_SECTOFF_HI, /* type */
744 16, /* rightshift */
745 1, /* size (0 = byte, 1 = short, 2 = long) */
746 16, /* bitsize */
747 FALSE, /* pc_relative */
748 0, /* bitpos */
749 complain_overflow_dont, /* complain_on_overflow */
750 ppc_elf_unhandled_reloc, /* special_function */
751 "R_PPC_SECTOFF_HI", /* name */
752 FALSE, /* partial_inplace */
753 0, /* src_mask */
754 0xffff, /* dst_mask */
755 FALSE), /* pcrel_offset */
756
757 /* 16-bit upper half adjusted section relative relocation. */
758 HOWTO (R_PPC_SECTOFF_HA, /* type */
759 16, /* rightshift */
760 1, /* size (0 = byte, 1 = short, 2 = long) */
761 16, /* bitsize */
762 FALSE, /* pc_relative */
763 0, /* bitpos */
764 complain_overflow_dont, /* complain_on_overflow */
765 ppc_elf_unhandled_reloc, /* special_function */
766 "R_PPC_SECTOFF_HA", /* name */
767 FALSE, /* partial_inplace */
768 0, /* src_mask */
769 0xffff, /* dst_mask */
770 FALSE), /* pcrel_offset */
771
772 /* Marker relocs for TLS. */
773 HOWTO (R_PPC_TLS,
774 0, /* rightshift */
775 2, /* size (0 = byte, 1 = short, 2 = long) */
776 32, /* bitsize */
777 FALSE, /* pc_relative */
778 0, /* bitpos */
779 complain_overflow_dont, /* complain_on_overflow */
780 bfd_elf_generic_reloc, /* special_function */
781 "R_PPC_TLS", /* name */
782 FALSE, /* partial_inplace */
783 0, /* src_mask */
784 0, /* dst_mask */
785 FALSE), /* pcrel_offset */
786
787 HOWTO (R_PPC_TLSGD,
788 0, /* rightshift */
789 2, /* size (0 = byte, 1 = short, 2 = long) */
790 32, /* bitsize */
791 FALSE, /* pc_relative */
792 0, /* bitpos */
793 complain_overflow_dont, /* complain_on_overflow */
794 bfd_elf_generic_reloc, /* special_function */
795 "R_PPC_TLSGD", /* name */
796 FALSE, /* partial_inplace */
797 0, /* src_mask */
798 0, /* dst_mask */
799 FALSE), /* pcrel_offset */
800
801 HOWTO (R_PPC_TLSLD,
802 0, /* rightshift */
803 2, /* size (0 = byte, 1 = short, 2 = long) */
804 32, /* bitsize */
805 FALSE, /* pc_relative */
806 0, /* bitpos */
807 complain_overflow_dont, /* complain_on_overflow */
808 bfd_elf_generic_reloc, /* special_function */
809 "R_PPC_TLSLD", /* name */
810 FALSE, /* partial_inplace */
811 0, /* src_mask */
812 0, /* dst_mask */
813 FALSE), /* pcrel_offset */
814
815 /* Computes the load module index of the load module that contains the
816 definition of its TLS sym. */
817 HOWTO (R_PPC_DTPMOD32,
818 0, /* rightshift */
819 2, /* size (0 = byte, 1 = short, 2 = long) */
820 32, /* bitsize */
821 FALSE, /* pc_relative */
822 0, /* bitpos */
823 complain_overflow_dont, /* complain_on_overflow */
824 ppc_elf_unhandled_reloc, /* special_function */
825 "R_PPC_DTPMOD32", /* name */
826 FALSE, /* partial_inplace */
827 0, /* src_mask */
828 0xffffffff, /* dst_mask */
829 FALSE), /* pcrel_offset */
830
831 /* Computes a dtv-relative displacement, the difference between the value
832 of sym+add and the base address of the thread-local storage block that
833 contains the definition of sym, minus 0x8000. */
834 HOWTO (R_PPC_DTPREL32,
835 0, /* rightshift */
836 2, /* size (0 = byte, 1 = short, 2 = long) */
837 32, /* bitsize */
838 FALSE, /* pc_relative */
839 0, /* bitpos */
840 complain_overflow_dont, /* complain_on_overflow */
841 ppc_elf_unhandled_reloc, /* special_function */
842 "R_PPC_DTPREL32", /* name */
843 FALSE, /* partial_inplace */
844 0, /* src_mask */
845 0xffffffff, /* dst_mask */
846 FALSE), /* pcrel_offset */
847
848 /* A 16 bit dtprel reloc. */
849 HOWTO (R_PPC_DTPREL16,
850 0, /* rightshift */
851 1, /* size (0 = byte, 1 = short, 2 = long) */
852 16, /* bitsize */
853 FALSE, /* pc_relative */
854 0, /* bitpos */
855 complain_overflow_signed, /* complain_on_overflow */
856 ppc_elf_unhandled_reloc, /* special_function */
857 "R_PPC_DTPREL16", /* name */
858 FALSE, /* partial_inplace */
859 0, /* src_mask */
860 0xffff, /* dst_mask */
861 FALSE), /* pcrel_offset */
862
863 /* Like DTPREL16, but no overflow. */
864 HOWTO (R_PPC_DTPREL16_LO,
865 0, /* rightshift */
866 1, /* size (0 = byte, 1 = short, 2 = long) */
867 16, /* bitsize */
868 FALSE, /* pc_relative */
869 0, /* bitpos */
870 complain_overflow_dont, /* complain_on_overflow */
871 ppc_elf_unhandled_reloc, /* special_function */
872 "R_PPC_DTPREL16_LO", /* name */
873 FALSE, /* partial_inplace */
874 0, /* src_mask */
875 0xffff, /* dst_mask */
876 FALSE), /* pcrel_offset */
877
878 /* Like DTPREL16_LO, but next higher group of 16 bits. */
879 HOWTO (R_PPC_DTPREL16_HI,
880 16, /* rightshift */
881 1, /* size (0 = byte, 1 = short, 2 = long) */
882 16, /* bitsize */
883 FALSE, /* pc_relative */
884 0, /* bitpos */
885 complain_overflow_dont, /* complain_on_overflow */
886 ppc_elf_unhandled_reloc, /* special_function */
887 "R_PPC_DTPREL16_HI", /* name */
888 FALSE, /* partial_inplace */
889 0, /* src_mask */
890 0xffff, /* dst_mask */
891 FALSE), /* pcrel_offset */
892
893 /* Like DTPREL16_HI, but adjust for low 16 bits. */
894 HOWTO (R_PPC_DTPREL16_HA,
895 16, /* rightshift */
896 1, /* size (0 = byte, 1 = short, 2 = long) */
897 16, /* bitsize */
898 FALSE, /* pc_relative */
899 0, /* bitpos */
900 complain_overflow_dont, /* complain_on_overflow */
901 ppc_elf_unhandled_reloc, /* special_function */
902 "R_PPC_DTPREL16_HA", /* name */
903 FALSE, /* partial_inplace */
904 0, /* src_mask */
905 0xffff, /* dst_mask */
906 FALSE), /* pcrel_offset */
907
908 /* Computes a tp-relative displacement, the difference between the value of
909 sym+add and the value of the thread pointer (r13). */
910 HOWTO (R_PPC_TPREL32,
911 0, /* rightshift */
912 2, /* size (0 = byte, 1 = short, 2 = long) */
913 32, /* bitsize */
914 FALSE, /* pc_relative */
915 0, /* bitpos */
916 complain_overflow_dont, /* complain_on_overflow */
917 ppc_elf_unhandled_reloc, /* special_function */
918 "R_PPC_TPREL32", /* name */
919 FALSE, /* partial_inplace */
920 0, /* src_mask */
921 0xffffffff, /* dst_mask */
922 FALSE), /* pcrel_offset */
923
924 /* A 16 bit tprel reloc. */
925 HOWTO (R_PPC_TPREL16,
926 0, /* rightshift */
927 1, /* size (0 = byte, 1 = short, 2 = long) */
928 16, /* bitsize */
929 FALSE, /* pc_relative */
930 0, /* bitpos */
931 complain_overflow_signed, /* complain_on_overflow */
932 ppc_elf_unhandled_reloc, /* special_function */
933 "R_PPC_TPREL16", /* name */
934 FALSE, /* partial_inplace */
935 0, /* src_mask */
936 0xffff, /* dst_mask */
937 FALSE), /* pcrel_offset */
938
939 /* Like TPREL16, but no overflow. */
940 HOWTO (R_PPC_TPREL16_LO,
941 0, /* rightshift */
942 1, /* size (0 = byte, 1 = short, 2 = long) */
943 16, /* bitsize */
944 FALSE, /* pc_relative */
945 0, /* bitpos */
946 complain_overflow_dont, /* complain_on_overflow */
947 ppc_elf_unhandled_reloc, /* special_function */
948 "R_PPC_TPREL16_LO", /* name */
949 FALSE, /* partial_inplace */
950 0, /* src_mask */
951 0xffff, /* dst_mask */
952 FALSE), /* pcrel_offset */
953
954 /* Like TPREL16_LO, but next higher group of 16 bits. */
955 HOWTO (R_PPC_TPREL16_HI,
956 16, /* rightshift */
957 1, /* size (0 = byte, 1 = short, 2 = long) */
958 16, /* bitsize */
959 FALSE, /* pc_relative */
960 0, /* bitpos */
961 complain_overflow_dont, /* complain_on_overflow */
962 ppc_elf_unhandled_reloc, /* special_function */
963 "R_PPC_TPREL16_HI", /* name */
964 FALSE, /* partial_inplace */
965 0, /* src_mask */
966 0xffff, /* dst_mask */
967 FALSE), /* pcrel_offset */
968
969 /* Like TPREL16_HI, but adjust for low 16 bits. */
970 HOWTO (R_PPC_TPREL16_HA,
971 16, /* rightshift */
972 1, /* size (0 = byte, 1 = short, 2 = long) */
973 16, /* bitsize */
974 FALSE, /* pc_relative */
975 0, /* bitpos */
976 complain_overflow_dont, /* complain_on_overflow */
977 ppc_elf_unhandled_reloc, /* special_function */
978 "R_PPC_TPREL16_HA", /* name */
979 FALSE, /* partial_inplace */
980 0, /* src_mask */
981 0xffff, /* dst_mask */
982 FALSE), /* pcrel_offset */
983
984 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
985 with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
986 to the first entry. */
987 HOWTO (R_PPC_GOT_TLSGD16,
988 0, /* rightshift */
989 1, /* size (0 = byte, 1 = short, 2 = long) */
990 16, /* bitsize */
991 FALSE, /* pc_relative */
992 0, /* bitpos */
993 complain_overflow_signed, /* complain_on_overflow */
994 ppc_elf_unhandled_reloc, /* special_function */
995 "R_PPC_GOT_TLSGD16", /* name */
996 FALSE, /* partial_inplace */
997 0, /* src_mask */
998 0xffff, /* dst_mask */
999 FALSE), /* pcrel_offset */
1000
1001 /* Like GOT_TLSGD16, but no overflow. */
1002 HOWTO (R_PPC_GOT_TLSGD16_LO,
1003 0, /* rightshift */
1004 1, /* size (0 = byte, 1 = short, 2 = long) */
1005 16, /* bitsize */
1006 FALSE, /* pc_relative */
1007 0, /* bitpos */
1008 complain_overflow_dont, /* complain_on_overflow */
1009 ppc_elf_unhandled_reloc, /* special_function */
1010 "R_PPC_GOT_TLSGD16_LO", /* name */
1011 FALSE, /* partial_inplace */
1012 0, /* src_mask */
1013 0xffff, /* dst_mask */
1014 FALSE), /* pcrel_offset */
1015
1016 /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
1017 HOWTO (R_PPC_GOT_TLSGD16_HI,
1018 16, /* rightshift */
1019 1, /* size (0 = byte, 1 = short, 2 = long) */
1020 16, /* bitsize */
1021 FALSE, /* pc_relative */
1022 0, /* bitpos */
1023 complain_overflow_dont, /* complain_on_overflow */
1024 ppc_elf_unhandled_reloc, /* special_function */
1025 "R_PPC_GOT_TLSGD16_HI", /* name */
1026 FALSE, /* partial_inplace */
1027 0, /* src_mask */
1028 0xffff, /* dst_mask */
1029 FALSE), /* pcrel_offset */
1030
1031 /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
1032 HOWTO (R_PPC_GOT_TLSGD16_HA,
1033 16, /* rightshift */
1034 1, /* size (0 = byte, 1 = short, 2 = long) */
1035 16, /* bitsize */
1036 FALSE, /* pc_relative */
1037 0, /* bitpos */
1038 complain_overflow_dont, /* complain_on_overflow */
1039 ppc_elf_unhandled_reloc, /* special_function */
1040 "R_PPC_GOT_TLSGD16_HA", /* name */
1041 FALSE, /* partial_inplace */
1042 0, /* src_mask */
1043 0xffff, /* dst_mask */
1044 FALSE), /* pcrel_offset */
1045
1046 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1047 with values (sym+add)@dtpmod and zero, and computes the offset to the
1048 first entry. */
1049 HOWTO (R_PPC_GOT_TLSLD16,
1050 0, /* rightshift */
1051 1, /* size (0 = byte, 1 = short, 2 = long) */
1052 16, /* bitsize */
1053 FALSE, /* pc_relative */
1054 0, /* bitpos */
1055 complain_overflow_signed, /* complain_on_overflow */
1056 ppc_elf_unhandled_reloc, /* special_function */
1057 "R_PPC_GOT_TLSLD16", /* name */
1058 FALSE, /* partial_inplace */
1059 0, /* src_mask */
1060 0xffff, /* dst_mask */
1061 FALSE), /* pcrel_offset */
1062
1063 /* Like GOT_TLSLD16, but no overflow. */
1064 HOWTO (R_PPC_GOT_TLSLD16_LO,
1065 0, /* rightshift */
1066 1, /* size (0 = byte, 1 = short, 2 = long) */
1067 16, /* bitsize */
1068 FALSE, /* pc_relative */
1069 0, /* bitpos */
1070 complain_overflow_dont, /* complain_on_overflow */
1071 ppc_elf_unhandled_reloc, /* special_function */
1072 "R_PPC_GOT_TLSLD16_LO", /* name */
1073 FALSE, /* partial_inplace */
1074 0, /* src_mask */
1075 0xffff, /* dst_mask */
1076 FALSE), /* pcrel_offset */
1077
1078 /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
1079 HOWTO (R_PPC_GOT_TLSLD16_HI,
1080 16, /* rightshift */
1081 1, /* size (0 = byte, 1 = short, 2 = long) */
1082 16, /* bitsize */
1083 FALSE, /* pc_relative */
1084 0, /* bitpos */
1085 complain_overflow_dont, /* complain_on_overflow */
1086 ppc_elf_unhandled_reloc, /* special_function */
1087 "R_PPC_GOT_TLSLD16_HI", /* name */
1088 FALSE, /* partial_inplace */
1089 0, /* src_mask */
1090 0xffff, /* dst_mask */
1091 FALSE), /* pcrel_offset */
1092
1093 /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
1094 HOWTO (R_PPC_GOT_TLSLD16_HA,
1095 16, /* rightshift */
1096 1, /* size (0 = byte, 1 = short, 2 = long) */
1097 16, /* bitsize */
1098 FALSE, /* pc_relative */
1099 0, /* bitpos */
1100 complain_overflow_dont, /* complain_on_overflow */
1101 ppc_elf_unhandled_reloc, /* special_function */
1102 "R_PPC_GOT_TLSLD16_HA", /* name */
1103 FALSE, /* partial_inplace */
1104 0, /* src_mask */
1105 0xffff, /* dst_mask */
1106 FALSE), /* pcrel_offset */
1107
1108 /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
1109 the offset to the entry. */
1110 HOWTO (R_PPC_GOT_DTPREL16,
1111 0, /* rightshift */
1112 1, /* size (0 = byte, 1 = short, 2 = long) */
1113 16, /* bitsize */
1114 FALSE, /* pc_relative */
1115 0, /* bitpos */
1116 complain_overflow_signed, /* complain_on_overflow */
1117 ppc_elf_unhandled_reloc, /* special_function */
1118 "R_PPC_GOT_DTPREL16", /* name */
1119 FALSE, /* partial_inplace */
1120 0, /* src_mask */
1121 0xffff, /* dst_mask */
1122 FALSE), /* pcrel_offset */
1123
1124 /* Like GOT_DTPREL16, but no overflow. */
1125 HOWTO (R_PPC_GOT_DTPREL16_LO,
1126 0, /* rightshift */
1127 1, /* size (0 = byte, 1 = short, 2 = long) */
1128 16, /* bitsize */
1129 FALSE, /* pc_relative */
1130 0, /* bitpos */
1131 complain_overflow_dont, /* complain_on_overflow */
1132 ppc_elf_unhandled_reloc, /* special_function */
1133 "R_PPC_GOT_DTPREL16_LO", /* name */
1134 FALSE, /* partial_inplace */
1135 0, /* src_mask */
1136 0xffff, /* dst_mask */
1137 FALSE), /* pcrel_offset */
1138
1139 /* Like GOT_DTPREL16_LO, but next higher group of 16 bits. */
1140 HOWTO (R_PPC_GOT_DTPREL16_HI,
1141 16, /* rightshift */
1142 1, /* size (0 = byte, 1 = short, 2 = long) */
1143 16, /* bitsize */
1144 FALSE, /* pc_relative */
1145 0, /* bitpos */
1146 complain_overflow_dont, /* complain_on_overflow */
1147 ppc_elf_unhandled_reloc, /* special_function */
1148 "R_PPC_GOT_DTPREL16_HI", /* name */
1149 FALSE, /* partial_inplace */
1150 0, /* src_mask */
1151 0xffff, /* dst_mask */
1152 FALSE), /* pcrel_offset */
1153
1154 /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
1155 HOWTO (R_PPC_GOT_DTPREL16_HA,
1156 16, /* rightshift */
1157 1, /* size (0 = byte, 1 = short, 2 = long) */
1158 16, /* bitsize */
1159 FALSE, /* pc_relative */
1160 0, /* bitpos */
1161 complain_overflow_dont, /* complain_on_overflow */
1162 ppc_elf_unhandled_reloc, /* special_function */
1163 "R_PPC_GOT_DTPREL16_HA", /* name */
1164 FALSE, /* partial_inplace */
1165 0, /* src_mask */
1166 0xffff, /* dst_mask */
1167 FALSE), /* pcrel_offset */
1168
1169 /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
1170 offset to the entry. */
1171 HOWTO (R_PPC_GOT_TPREL16,
1172 0, /* rightshift */
1173 1, /* size (0 = byte, 1 = short, 2 = long) */
1174 16, /* bitsize */
1175 FALSE, /* pc_relative */
1176 0, /* bitpos */
1177 complain_overflow_signed, /* complain_on_overflow */
1178 ppc_elf_unhandled_reloc, /* special_function */
1179 "R_PPC_GOT_TPREL16", /* name */
1180 FALSE, /* partial_inplace */
1181 0, /* src_mask */
1182 0xffff, /* dst_mask */
1183 FALSE), /* pcrel_offset */
1184
1185 /* Like GOT_TPREL16, but no overflow. */
1186 HOWTO (R_PPC_GOT_TPREL16_LO,
1187 0, /* rightshift */
1188 1, /* size (0 = byte, 1 = short, 2 = long) */
1189 16, /* bitsize */
1190 FALSE, /* pc_relative */
1191 0, /* bitpos */
1192 complain_overflow_dont, /* complain_on_overflow */
1193 ppc_elf_unhandled_reloc, /* special_function */
1194 "R_PPC_GOT_TPREL16_LO", /* name */
1195 FALSE, /* partial_inplace */
1196 0, /* src_mask */
1197 0xffff, /* dst_mask */
1198 FALSE), /* pcrel_offset */
1199
1200 /* Like GOT_TPREL16_LO, but next higher group of 16 bits. */
1201 HOWTO (R_PPC_GOT_TPREL16_HI,
1202 16, /* rightshift */
1203 1, /* size (0 = byte, 1 = short, 2 = long) */
1204 16, /* bitsize */
1205 FALSE, /* pc_relative */
1206 0, /* bitpos */
1207 complain_overflow_dont, /* complain_on_overflow */
1208 ppc_elf_unhandled_reloc, /* special_function */
1209 "R_PPC_GOT_TPREL16_HI", /* name */
1210 FALSE, /* partial_inplace */
1211 0, /* src_mask */
1212 0xffff, /* dst_mask */
1213 FALSE), /* pcrel_offset */
1214
1215 /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
1216 HOWTO (R_PPC_GOT_TPREL16_HA,
1217 16, /* rightshift */
1218 1, /* size (0 = byte, 1 = short, 2 = long) */
1219 16, /* bitsize */
1220 FALSE, /* pc_relative */
1221 0, /* bitpos */
1222 complain_overflow_dont, /* complain_on_overflow */
1223 ppc_elf_unhandled_reloc, /* special_function */
1224 "R_PPC_GOT_TPREL16_HA", /* name */
1225 FALSE, /* partial_inplace */
1226 0, /* src_mask */
1227 0xffff, /* dst_mask */
1228 FALSE), /* pcrel_offset */
1229
1230 /* The remaining relocs are from the Embedded ELF ABI, and are not
1231 in the SVR4 ELF ABI. */
1232
1233 /* 32 bit value resulting from the addend minus the symbol. */
1234 HOWTO (R_PPC_EMB_NADDR32, /* type */
1235 0, /* rightshift */
1236 2, /* size (0 = byte, 1 = short, 2 = long) */
1237 32, /* bitsize */
1238 FALSE, /* pc_relative */
1239 0, /* bitpos */
1240 complain_overflow_dont, /* complain_on_overflow */
1241 ppc_elf_unhandled_reloc, /* special_function */
1242 "R_PPC_EMB_NADDR32", /* name */
1243 FALSE, /* partial_inplace */
1244 0, /* src_mask */
1245 0xffffffff, /* dst_mask */
1246 FALSE), /* pcrel_offset */
1247
1248 /* 16 bit value resulting from the addend minus the symbol. */
1249 HOWTO (R_PPC_EMB_NADDR16, /* type */
1250 0, /* rightshift */
1251 1, /* size (0 = byte, 1 = short, 2 = long) */
1252 16, /* bitsize */
1253 FALSE, /* pc_relative */
1254 0, /* bitpos */
1255 complain_overflow_signed, /* complain_on_overflow */
1256 ppc_elf_unhandled_reloc, /* special_function */
1257 "R_PPC_EMB_NADDR16", /* name */
1258 FALSE, /* partial_inplace */
1259 0, /* src_mask */
1260 0xffff, /* dst_mask */
1261 FALSE), /* pcrel_offset */
1262
1263 /* 16 bit value resulting from the addend minus the symbol. */
1264 HOWTO (R_PPC_EMB_NADDR16_LO, /* type */
1265 0, /* rightshift */
1266 1, /* size (0 = byte, 1 = short, 2 = long) */
1267 16, /* bitsize */
1268 FALSE, /* pc_relative */
1269 0, /* bitpos */
1270 complain_overflow_dont,/* complain_on_overflow */
1271 ppc_elf_unhandled_reloc, /* special_function */
1272 "R_PPC_EMB_ADDR16_LO", /* name */
1273 FALSE, /* partial_inplace */
1274 0, /* src_mask */
1275 0xffff, /* dst_mask */
1276 FALSE), /* pcrel_offset */
1277
1278 /* The high order 16 bits of the addend minus the symbol. */
1279 HOWTO (R_PPC_EMB_NADDR16_HI, /* type */
1280 16, /* rightshift */
1281 1, /* size (0 = byte, 1 = short, 2 = long) */
1282 16, /* bitsize */
1283 FALSE, /* pc_relative */
1284 0, /* bitpos */
1285 complain_overflow_dont, /* complain_on_overflow */
1286 ppc_elf_unhandled_reloc, /* special_function */
1287 "R_PPC_EMB_NADDR16_HI", /* name */
1288 FALSE, /* partial_inplace */
1289 0, /* src_mask */
1290 0xffff, /* dst_mask */
1291 FALSE), /* pcrel_offset */
1292
1293 /* The high order 16 bits of the result of the addend minus the address,
1294 plus 1 if the contents of the low 16 bits, treated as a signed number,
1295 is negative. */
1296 HOWTO (R_PPC_EMB_NADDR16_HA, /* type */
1297 16, /* rightshift */
1298 1, /* size (0 = byte, 1 = short, 2 = long) */
1299 16, /* bitsize */
1300 FALSE, /* pc_relative */
1301 0, /* bitpos */
1302 complain_overflow_dont, /* complain_on_overflow */
1303 ppc_elf_unhandled_reloc, /* special_function */
1304 "R_PPC_EMB_NADDR16_HA", /* name */
1305 FALSE, /* partial_inplace */
1306 0, /* src_mask */
1307 0xffff, /* dst_mask */
1308 FALSE), /* pcrel_offset */
1309
1310 /* 16 bit value resulting from allocating a 4 byte word to hold an
1311 address in the .sdata section, and returning the offset from
1312 _SDA_BASE_ for that relocation. */
1313 HOWTO (R_PPC_EMB_SDAI16, /* type */
1314 0, /* rightshift */
1315 1, /* size (0 = byte, 1 = short, 2 = long) */
1316 16, /* bitsize */
1317 FALSE, /* pc_relative */
1318 0, /* bitpos */
1319 complain_overflow_signed, /* complain_on_overflow */
1320 ppc_elf_unhandled_reloc, /* special_function */
1321 "R_PPC_EMB_SDAI16", /* name */
1322 FALSE, /* partial_inplace */
1323 0, /* src_mask */
1324 0xffff, /* dst_mask */
1325 FALSE), /* pcrel_offset */
1326
1327 /* 16 bit value resulting from allocating a 4 byte word to hold an
1328 address in the .sdata2 section, and returning the offset from
1329 _SDA2_BASE_ for that relocation. */
1330 HOWTO (R_PPC_EMB_SDA2I16, /* type */
1331 0, /* rightshift */
1332 1, /* size (0 = byte, 1 = short, 2 = long) */
1333 16, /* bitsize */
1334 FALSE, /* pc_relative */
1335 0, /* bitpos */
1336 complain_overflow_signed, /* complain_on_overflow */
1337 ppc_elf_unhandled_reloc, /* special_function */
1338 "R_PPC_EMB_SDA2I16", /* name */
1339 FALSE, /* partial_inplace */
1340 0, /* src_mask */
1341 0xffff, /* dst_mask */
1342 FALSE), /* pcrel_offset */
1343
1344 /* A sign-extended 16 bit value relative to _SDA2_BASE_, for use with
1345 small data items. */
1346 HOWTO (R_PPC_EMB_SDA2REL, /* type */
1347 0, /* rightshift */
1348 1, /* size (0 = byte, 1 = short, 2 = long) */
1349 16, /* bitsize */
1350 FALSE, /* pc_relative */
1351 0, /* bitpos */
1352 complain_overflow_signed, /* complain_on_overflow */
1353 ppc_elf_unhandled_reloc, /* special_function */
1354 "R_PPC_EMB_SDA2REL", /* name */
1355 FALSE, /* partial_inplace */
1356 0, /* src_mask */
1357 0xffff, /* dst_mask */
1358 FALSE), /* pcrel_offset */
1359
1360 /* Relocate against either _SDA_BASE_ or _SDA2_BASE_, filling in the 16 bit
1361 signed offset from the appropriate base, and filling in the register
1362 field with the appropriate register (0, 2, or 13). */
1363 HOWTO (R_PPC_EMB_SDA21, /* type */
1364 0, /* rightshift */
1365 2, /* size (0 = byte, 1 = short, 2 = long) */
1366 16, /* bitsize */
1367 FALSE, /* pc_relative */
1368 0, /* bitpos */
1369 complain_overflow_signed, /* complain_on_overflow */
1370 ppc_elf_unhandled_reloc, /* special_function */
1371 "R_PPC_EMB_SDA21", /* name */
1372 FALSE, /* partial_inplace */
1373 0, /* src_mask */
1374 0xffff, /* dst_mask */
1375 FALSE), /* pcrel_offset */
1376
1377 /* Relocation not handled: R_PPC_EMB_MRKREF */
1378 /* Relocation not handled: R_PPC_EMB_RELSEC16 */
1379 /* Relocation not handled: R_PPC_EMB_RELST_LO */
1380 /* Relocation not handled: R_PPC_EMB_RELST_HI */
1381 /* Relocation not handled: R_PPC_EMB_RELST_HA */
1382 /* Relocation not handled: R_PPC_EMB_BIT_FLD */
1383
1384 /* PC relative relocation against either _SDA_BASE_ or _SDA2_BASE_, filling
1385 in the 16 bit signed offset from the appropriate base, and filling in the
1386 register field with the appropriate register (0, 2, or 13). */
1387 HOWTO (R_PPC_EMB_RELSDA, /* type */
1388 0, /* rightshift */
1389 1, /* size (0 = byte, 1 = short, 2 = long) */
1390 16, /* bitsize */
1391 FALSE, /* pc_relative */
1392 0, /* bitpos */
1393 complain_overflow_signed, /* complain_on_overflow */
1394 ppc_elf_unhandled_reloc, /* special_function */
1395 "R_PPC_EMB_RELSDA", /* name */
1396 FALSE, /* partial_inplace */
1397 0, /* src_mask */
1398 0xffff, /* dst_mask */
1399 FALSE), /* pcrel_offset */
1400
1401 /* A relative 8 bit branch. */
1402 HOWTO (R_PPC_VLE_REL8, /* type */
1403 1, /* rightshift */
1404 1, /* size (0 = byte, 1 = short, 2 = long) */
1405 8, /* bitsize */
1406 TRUE, /* pc_relative */
1407 0, /* bitpos */
1408 complain_overflow_signed, /* complain_on_overflow */
1409 bfd_elf_generic_reloc, /* special_function */
1410 "R_PPC_VLE_REL8", /* name */
1411 FALSE, /* partial_inplace */
1412 0, /* src_mask */
1413 0xff, /* dst_mask */
1414 TRUE), /* pcrel_offset */
1415
1416 /* A relative 15 bit branch. */
1417 HOWTO (R_PPC_VLE_REL15, /* type */
1418 1, /* rightshift */
1419 2, /* size (0 = byte, 1 = short, 2 = long) */
1420 15, /* bitsize */
1421 TRUE, /* pc_relative */
1422 1, /* bitpos */
1423 complain_overflow_signed, /* complain_on_overflow */
1424 bfd_elf_generic_reloc, /* special_function */
1425 "R_PPC_VLE_REL15", /* name */
1426 FALSE, /* partial_inplace */
1427 0, /* src_mask */
1428 0xfffe, /* dst_mask */
1429 TRUE), /* pcrel_offset */
1430
1431 /* A relative 24 bit branch. */
1432 HOWTO (R_PPC_VLE_REL24, /* type */
1433 1, /* rightshift */
1434 2, /* size (0 = byte, 1 = short, 2 = long) */
1435 24, /* bitsize */
1436 TRUE, /* pc_relative */
1437 1, /* bitpos */
1438 complain_overflow_signed, /* complain_on_overflow */
1439 bfd_elf_generic_reloc, /* special_function */
1440 "R_PPC_VLE_REL24", /* name */
1441 FALSE, /* partial_inplace */
1442 0, /* src_mask */
1443 0x1fffffe, /* dst_mask */
1444 TRUE), /* pcrel_offset */
1445
1446 /* The 16 LSBS in split16a format. */
1447 HOWTO (R_PPC_VLE_LO16A, /* type */
1448 0, /* rightshift */
1449 2, /* size (0 = byte, 1 = short, 2 = long) */
1450 16, /* bitsize */
1451 FALSE, /* pc_relative */
1452 0, /* bitpos */
1453 complain_overflow_dont, /* complain_on_overflow */
1454 ppc_elf_unhandled_reloc, /* special_function */
1455 "R_PPC_VLE_LO16A", /* name */
1456 FALSE, /* partial_inplace */
1457 0, /* src_mask */
1458 0x1f007ff, /* dst_mask */
1459 FALSE), /* pcrel_offset */
1460
1461 /* The 16 LSBS in split16d format. */
1462 HOWTO (R_PPC_VLE_LO16D, /* type */
1463 0, /* rightshift */
1464 2, /* size (0 = byte, 1 = short, 2 = long) */
1465 16, /* bitsize */
1466 FALSE, /* pc_relative */
1467 0, /* bitpos */
1468 complain_overflow_dont, /* complain_on_overflow */
1469 ppc_elf_unhandled_reloc, /* special_function */
1470 "R_PPC_VLE_LO16D", /* name */
1471 FALSE, /* partial_inplace */
1472 0, /* src_mask */
1473 0x1f07ff, /* dst_mask */
1474 FALSE), /* pcrel_offset */
1475
1476 /* Bits 16-31 split16a format. */
1477 HOWTO (R_PPC_VLE_HI16A, /* type */
1478 16, /* rightshift */
1479 2, /* size (0 = byte, 1 = short, 2 = long) */
1480 16, /* bitsize */
1481 FALSE, /* pc_relative */
1482 0, /* bitpos */
1483 complain_overflow_dont, /* complain_on_overflow */
1484 ppc_elf_unhandled_reloc, /* special_function */
1485 "R_PPC_VLE_HI16A", /* name */
1486 FALSE, /* partial_inplace */
1487 0, /* src_mask */
1488 0x1f007ff, /* dst_mask */
1489 FALSE), /* pcrel_offset */
1490
1491 /* Bits 16-31 split16d format. */
1492 HOWTO (R_PPC_VLE_HI16D, /* type */
1493 16, /* rightshift */
1494 2, /* size (0 = byte, 1 = short, 2 = long) */
1495 16, /* bitsize */
1496 FALSE, /* pc_relative */
1497 0, /* bitpos */
1498 complain_overflow_dont, /* complain_on_overflow */
1499 ppc_elf_unhandled_reloc, /* special_function */
1500 "R_PPC_VLE_HI16D", /* name */
1501 FALSE, /* partial_inplace */
1502 0, /* src_mask */
1503 0x1f07ff, /* dst_mask */
1504 FALSE), /* pcrel_offset */
1505
1506 /* Bits 16-31 (High Adjusted) in split16a format. */
1507 HOWTO (R_PPC_VLE_HA16A, /* type */
1508 16, /* rightshift */
1509 2, /* size (0 = byte, 1 = short, 2 = long) */
1510 16, /* bitsize */
1511 FALSE, /* pc_relative */
1512 0, /* bitpos */
1513 complain_overflow_dont, /* complain_on_overflow */
1514 ppc_elf_unhandled_reloc, /* special_function */
1515 "R_PPC_VLE_HA16A", /* name */
1516 FALSE, /* partial_inplace */
1517 0, /* src_mask */
1518 0x1f007ff, /* dst_mask */
1519 FALSE), /* pcrel_offset */
1520
1521 /* Bits 16-31 (High Adjusted) in split16d format. */
1522 HOWTO (R_PPC_VLE_HA16D, /* type */
1523 16, /* rightshift */
1524 2, /* size (0 = byte, 1 = short, 2 = long) */
1525 16, /* bitsize */
1526 FALSE, /* pc_relative */
1527 0, /* bitpos */
1528 complain_overflow_dont, /* complain_on_overflow */
1529 ppc_elf_unhandled_reloc, /* special_function */
1530 "R_PPC_VLE_HA16D", /* name */
1531 FALSE, /* partial_inplace */
1532 0, /* src_mask */
1533 0x1f07ff, /* dst_mask */
1534 FALSE), /* pcrel_offset */
1535
1536 /* This reloc is like R_PPC_EMB_SDA21 but only applies to e_add16i
1537 instructions. If the register base is 0 then the linker changes
1538 the e_add16i to an e_li instruction. */
1539 HOWTO (R_PPC_VLE_SDA21, /* type */
1540 0, /* rightshift */
1541 2, /* size (0 = byte, 1 = short, 2 = long) */
1542 16, /* bitsize */
1543 FALSE, /* pc_relative */
1544 0, /* bitpos */
1545 complain_overflow_signed, /* complain_on_overflow */
1546 ppc_elf_unhandled_reloc, /* special_function */
1547 "R_PPC_VLE_SDA21", /* name */
1548 FALSE, /* partial_inplace */
1549 0, /* src_mask */
1550 0xffff, /* dst_mask */
1551 FALSE), /* pcrel_offset */
1552
1553 /* Like R_PPC_VLE_SDA21 but ignore overflow. */
1554 HOWTO (R_PPC_VLE_SDA21_LO, /* type */
1555 0, /* rightshift */
1556 2, /* size (0 = byte, 1 = short, 2 = long) */
1557 16, /* bitsize */
1558 FALSE, /* pc_relative */
1559 0, /* bitpos */
1560 complain_overflow_dont, /* complain_on_overflow */
1561 ppc_elf_unhandled_reloc, /* special_function */
1562 "R_PPC_VLE_SDA21_LO", /* name */
1563 FALSE, /* partial_inplace */
1564 0, /* src_mask */
1565 0xffff, /* dst_mask */
1566 FALSE), /* pcrel_offset */
1567
1568 /* The 16 LSBS relative to _SDA_BASE_ in split16a format. */
1569 HOWTO (R_PPC_VLE_SDAREL_LO16A,/* type */
1570 0, /* rightshift */
1571 2, /* size (0 = byte, 1 = short, 2 = long) */
1572 16, /* bitsize */
1573 FALSE, /* pc_relative */
1574 0, /* bitpos */
1575 complain_overflow_dont, /* complain_on_overflow */
1576 ppc_elf_unhandled_reloc, /* special_function */
1577 "R_PPC_VLE_SDAREL_LO16A", /* name */
1578 FALSE, /* partial_inplace */
1579 0, /* src_mask */
1580 0x1f007ff, /* dst_mask */
1581 FALSE), /* pcrel_offset */
1582
1583 /* The 16 LSBS relative to _SDA_BASE_ in split16d format. */
1584 HOWTO (R_PPC_VLE_SDAREL_LO16D, /* type */
1585 0, /* rightshift */
1586 2, /* size (0 = byte, 1 = short, 2 = long) */
1587 16, /* bitsize */
1588 FALSE, /* pc_relative */
1589 0, /* bitpos */
1590 complain_overflow_dont, /* complain_on_overflow */
1591 ppc_elf_unhandled_reloc, /* special_function */
1592 "R_PPC_VLE_SDAREL_LO16D", /* name */
1593 FALSE, /* partial_inplace */
1594 0, /* src_mask */
1595 0x1f07ff, /* dst_mask */
1596 FALSE), /* pcrel_offset */
1597
1598 /* Bits 16-31 relative to _SDA_BASE_ in split16a format. */
1599 HOWTO (R_PPC_VLE_SDAREL_HI16A, /* type */
1600 16, /* rightshift */
1601 2, /* size (0 = byte, 1 = short, 2 = long) */
1602 16, /* bitsize */
1603 FALSE, /* pc_relative */
1604 0, /* bitpos */
1605 complain_overflow_dont, /* complain_on_overflow */
1606 ppc_elf_unhandled_reloc, /* special_function */
1607 "R_PPC_VLE_SDAREL_HI16A", /* name */
1608 FALSE, /* partial_inplace */
1609 0, /* src_mask */
1610 0x1f007ff, /* dst_mask */
1611 FALSE), /* pcrel_offset */
1612
1613 /* Bits 16-31 relative to _SDA_BASE_ in split16d format. */
1614 HOWTO (R_PPC_VLE_SDAREL_HI16D, /* type */
1615 16, /* rightshift */
1616 2, /* size (0 = byte, 1 = short, 2 = long) */
1617 16, /* bitsize */
1618 FALSE, /* pc_relative */
1619 0, /* bitpos */
1620 complain_overflow_dont, /* complain_on_overflow */
1621 ppc_elf_unhandled_reloc, /* special_function */
1622 "R_PPC_VLE_SDAREL_HI16D", /* name */
1623 FALSE, /* partial_inplace */
1624 0, /* src_mask */
1625 0x1f07ff, /* dst_mask */
1626 FALSE), /* pcrel_offset */
1627
1628 /* Bits 16-31 (HA) relative to _SDA_BASE split16a format. */
1629 HOWTO (R_PPC_VLE_SDAREL_HA16A, /* type */
1630 16, /* rightshift */
1631 2, /* size (0 = byte, 1 = short, 2 = long) */
1632 16, /* bitsize */
1633 FALSE, /* pc_relative */
1634 0, /* bitpos */
1635 complain_overflow_dont, /* complain_on_overflow */
1636 ppc_elf_unhandled_reloc, /* special_function */
1637 "R_PPC_VLE_SDAREL_HA16A", /* name */
1638 FALSE, /* partial_inplace */
1639 0, /* src_mask */
1640 0x1f007ff, /* dst_mask */
1641 FALSE), /* pcrel_offset */
1642
1643 /* Bits 16-31 (HA) relative to _SDA_BASE split16d format. */
1644 HOWTO (R_PPC_VLE_SDAREL_HA16D, /* type */
1645 16, /* rightshift */
1646 2, /* size (0 = byte, 1 = short, 2 = long) */
1647 16, /* bitsize */
1648 FALSE, /* pc_relative */
1649 0, /* bitpos */
1650 complain_overflow_dont, /* complain_on_overflow */
1651 ppc_elf_unhandled_reloc, /* special_function */
1652 "R_PPC_VLE_SDAREL_HA16D", /* name */
1653 FALSE, /* partial_inplace */
1654 0, /* src_mask */
1655 0x1f07ff, /* dst_mask */
1656 FALSE), /* pcrel_offset */
1657
1658 HOWTO (R_PPC_IRELATIVE, /* type */
1659 0, /* rightshift */
1660 2, /* size (0 = byte, 1 = short, 2 = long) */
1661 32, /* bitsize */
1662 FALSE, /* pc_relative */
1663 0, /* bitpos */
1664 complain_overflow_dont, /* complain_on_overflow */
1665 ppc_elf_unhandled_reloc, /* special_function */
1666 "R_PPC_IRELATIVE", /* name */
1667 FALSE, /* partial_inplace */
1668 0, /* src_mask */
1669 0xffffffff, /* dst_mask */
1670 FALSE), /* pcrel_offset */
1671
1672 /* A 16 bit relative relocation. */
1673 HOWTO (R_PPC_REL16, /* type */
1674 0, /* rightshift */
1675 1, /* size (0 = byte, 1 = short, 2 = long) */
1676 16, /* bitsize */
1677 TRUE, /* pc_relative */
1678 0, /* bitpos */
1679 complain_overflow_signed, /* complain_on_overflow */
1680 bfd_elf_generic_reloc, /* special_function */
1681 "R_PPC_REL16", /* name */
1682 FALSE, /* partial_inplace */
1683 0, /* src_mask */
1684 0xffff, /* dst_mask */
1685 TRUE), /* pcrel_offset */
1686
1687 /* A 16 bit relative relocation without overflow. */
1688 HOWTO (R_PPC_REL16_LO, /* type */
1689 0, /* rightshift */
1690 1, /* size (0 = byte, 1 = short, 2 = long) */
1691 16, /* bitsize */
1692 TRUE, /* pc_relative */
1693 0, /* bitpos */
1694 complain_overflow_dont,/* complain_on_overflow */
1695 bfd_elf_generic_reloc, /* special_function */
1696 "R_PPC_REL16_LO", /* name */
1697 FALSE, /* partial_inplace */
1698 0, /* src_mask */
1699 0xffff, /* dst_mask */
1700 TRUE), /* pcrel_offset */
1701
1702 /* The high order 16 bits of a relative address. */
1703 HOWTO (R_PPC_REL16_HI, /* type */
1704 16, /* rightshift */
1705 1, /* size (0 = byte, 1 = short, 2 = long) */
1706 16, /* bitsize */
1707 TRUE, /* pc_relative */
1708 0, /* bitpos */
1709 complain_overflow_dont, /* complain_on_overflow */
1710 bfd_elf_generic_reloc, /* special_function */
1711 "R_PPC_REL16_HI", /* name */
1712 FALSE, /* partial_inplace */
1713 0, /* src_mask */
1714 0xffff, /* dst_mask */
1715 TRUE), /* pcrel_offset */
1716
1717 /* The high order 16 bits of a relative address, plus 1 if the contents of
1718 the low 16 bits, treated as a signed number, is negative. */
1719 HOWTO (R_PPC_REL16_HA, /* 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 ppc_elf_addr16_ha_reloc, /* special_function */
1727 "R_PPC_REL16_HA", /* name */
1728 FALSE, /* partial_inplace */
1729 0, /* src_mask */
1730 0xffff, /* dst_mask */
1731 TRUE), /* pcrel_offset */
1732
1733 /* Like R_PPC_REL16_HA but for split field in addpcis. */
1734 HOWTO (R_PPC_REL16DX_HA, /* type */
1735 16, /* rightshift */
1736 2, /* size (0 = byte, 1 = short, 2 = long) */
1737 16, /* bitsize */
1738 TRUE, /* pc_relative */
1739 0, /* bitpos */
1740 complain_overflow_signed, /* complain_on_overflow */
1741 ppc_elf_addr16_ha_reloc, /* special_function */
1742 "R_PPC_REL16DX_HA", /* name */
1743 FALSE, /* partial_inplace */
1744 0, /* src_mask */
1745 0x1fffc1, /* dst_mask */
1746 TRUE), /* pcrel_offset */
1747
1748 /* GNU extension to record C++ vtable hierarchy. */
1749 HOWTO (R_PPC_GNU_VTINHERIT, /* type */
1750 0, /* rightshift */
1751 0, /* size (0 = byte, 1 = short, 2 = long) */
1752 0, /* bitsize */
1753 FALSE, /* pc_relative */
1754 0, /* bitpos */
1755 complain_overflow_dont, /* complain_on_overflow */
1756 NULL, /* special_function */
1757 "R_PPC_GNU_VTINHERIT", /* name */
1758 FALSE, /* partial_inplace */
1759 0, /* src_mask */
1760 0, /* dst_mask */
1761 FALSE), /* pcrel_offset */
1762
1763 /* GNU extension to record C++ vtable member usage. */
1764 HOWTO (R_PPC_GNU_VTENTRY, /* type */
1765 0, /* rightshift */
1766 0, /* size (0 = byte, 1 = short, 2 = long) */
1767 0, /* bitsize */
1768 FALSE, /* pc_relative */
1769 0, /* bitpos */
1770 complain_overflow_dont, /* complain_on_overflow */
1771 NULL, /* special_function */
1772 "R_PPC_GNU_VTENTRY", /* name */
1773 FALSE, /* partial_inplace */
1774 0, /* src_mask */
1775 0, /* dst_mask */
1776 FALSE), /* pcrel_offset */
1777
1778 /* Phony reloc to handle AIX style TOC entries. */
1779 HOWTO (R_PPC_TOC16, /* type */
1780 0, /* rightshift */
1781 1, /* size (0 = byte, 1 = short, 2 = long) */
1782 16, /* bitsize */
1783 FALSE, /* pc_relative */
1784 0, /* bitpos */
1785 complain_overflow_signed, /* complain_on_overflow */
1786 ppc_elf_unhandled_reloc, /* special_function */
1787 "R_PPC_TOC16", /* name */
1788 FALSE, /* partial_inplace */
1789 0, /* src_mask */
1790 0xffff, /* dst_mask */
1791 FALSE), /* pcrel_offset */
1792 };
1793
1794 /* External 32-bit PPC structure for PRPSINFO. This structure is
1795 ABI-defined, thus we choose to use char arrays here in order to
1796 avoid dealing with different types in different architectures.
1797
1798 The PPC 32-bit structure uses int for `pr_uid' and `pr_gid' while
1799 most non-PPC architectures use `short int'.
1800
1801 This structure will ultimately be written in the corefile's note
1802 section, as the PRPSINFO. */
1803
1804 struct elf_external_ppc_linux_prpsinfo32
1805 {
1806 char pr_state; /* Numeric process state. */
1807 char pr_sname; /* Char for pr_state. */
1808 char pr_zomb; /* Zombie. */
1809 char pr_nice; /* Nice val. */
1810 char pr_flag[4]; /* Flags. */
1811 char pr_uid[4];
1812 char pr_gid[4];
1813 char pr_pid[4];
1814 char pr_ppid[4];
1815 char pr_pgrp[4];
1816 char pr_sid[4];
1817 char pr_fname[16]; /* Filename of executable. */
1818 char pr_psargs[80]; /* Initial part of arg list. */
1819 };
1820
1821 /* Helper function to copy an elf_internal_linux_prpsinfo in host
1822 endian to an elf_external_ppc_linux_prpsinfo32 in target endian. */
1823
1824 static inline void
1825 swap_ppc_linux_prpsinfo32_out (bfd *obfd,
1826 const struct elf_internal_linux_prpsinfo *from,
1827 struct elf_external_ppc_linux_prpsinfo32 *to)
1828 {
1829 bfd_put_8 (obfd, from->pr_state, &to->pr_state);
1830 bfd_put_8 (obfd, from->pr_sname, &to->pr_sname);
1831 bfd_put_8 (obfd, from->pr_zomb, &to->pr_zomb);
1832 bfd_put_8 (obfd, from->pr_nice, &to->pr_nice);
1833 bfd_put_32 (obfd, from->pr_flag, to->pr_flag);
1834 bfd_put_32 (obfd, from->pr_uid, to->pr_uid);
1835 bfd_put_32 (obfd, from->pr_gid, to->pr_gid);
1836 bfd_put_32 (obfd, from->pr_pid, to->pr_pid);
1837 bfd_put_32 (obfd, from->pr_ppid, to->pr_ppid);
1838 bfd_put_32 (obfd, from->pr_pgrp, to->pr_pgrp);
1839 bfd_put_32 (obfd, from->pr_sid, to->pr_sid);
1840 strncpy (to->pr_fname, from->pr_fname, sizeof (to->pr_fname));
1841 strncpy (to->pr_psargs, from->pr_psargs, sizeof (to->pr_psargs));
1842 }
1843 \f
1844 /* Initialize the ppc_elf_howto_table, so that linear accesses can be done. */
1845
1846 static void
1847 ppc_elf_howto_init (void)
1848 {
1849 unsigned int i, type;
1850
1851 for (i = 0;
1852 i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]);
1853 i++)
1854 {
1855 type = ppc_elf_howto_raw[i].type;
1856 if (type >= (sizeof (ppc_elf_howto_table)
1857 / sizeof (ppc_elf_howto_table[0])))
1858 abort ();
1859 ppc_elf_howto_table[type] = &ppc_elf_howto_raw[i];
1860 }
1861 }
1862
1863 static reloc_howto_type *
1864 ppc_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1865 bfd_reloc_code_real_type code)
1866 {
1867 enum elf_ppc_reloc_type r;
1868
1869 /* Initialize howto table if not already done. */
1870 if (!ppc_elf_howto_table[R_PPC_ADDR32])
1871 ppc_elf_howto_init ();
1872
1873 switch (code)
1874 {
1875 default:
1876 return NULL;
1877
1878 case BFD_RELOC_NONE: r = R_PPC_NONE; break;
1879 case BFD_RELOC_32: r = R_PPC_ADDR32; break;
1880 case BFD_RELOC_PPC_BA26: r = R_PPC_ADDR24; break;
1881 case BFD_RELOC_PPC64_ADDR16_DS:
1882 case BFD_RELOC_16: r = R_PPC_ADDR16; break;
1883 case BFD_RELOC_PPC64_ADDR16_LO_DS:
1884 case BFD_RELOC_LO16: r = R_PPC_ADDR16_LO; break;
1885 case BFD_RELOC_HI16: r = R_PPC_ADDR16_HI; break;
1886 case BFD_RELOC_HI16_S: r = R_PPC_ADDR16_HA; break;
1887 case BFD_RELOC_PPC_BA16: r = R_PPC_ADDR14; break;
1888 case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC_ADDR14_BRTAKEN; break;
1889 case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC_ADDR14_BRNTAKEN; break;
1890 case BFD_RELOC_PPC_B26: r = R_PPC_REL24; break;
1891 case BFD_RELOC_PPC_B16: r = R_PPC_REL14; break;
1892 case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC_REL14_BRTAKEN; break;
1893 case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC_REL14_BRNTAKEN; break;
1894 case BFD_RELOC_PPC64_GOT16_DS:
1895 case BFD_RELOC_16_GOTOFF: r = R_PPC_GOT16; break;
1896 case BFD_RELOC_PPC64_GOT16_LO_DS:
1897 case BFD_RELOC_LO16_GOTOFF: r = R_PPC_GOT16_LO; break;
1898 case BFD_RELOC_HI16_GOTOFF: r = R_PPC_GOT16_HI; break;
1899 case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC_GOT16_HA; break;
1900 case BFD_RELOC_24_PLT_PCREL: r = R_PPC_PLTREL24; break;
1901 case BFD_RELOC_PPC_COPY: r = R_PPC_COPY; break;
1902 case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC_GLOB_DAT; break;
1903 case BFD_RELOC_PPC_LOCAL24PC: r = R_PPC_LOCAL24PC; break;
1904 case BFD_RELOC_32_PCREL: r = R_PPC_REL32; break;
1905 case BFD_RELOC_32_PLTOFF: r = R_PPC_PLT32; break;
1906 case BFD_RELOC_32_PLT_PCREL: r = R_PPC_PLTREL32; break;
1907 case BFD_RELOC_PPC64_PLT16_LO_DS:
1908 case BFD_RELOC_LO16_PLTOFF: r = R_PPC_PLT16_LO; break;
1909 case BFD_RELOC_HI16_PLTOFF: r = R_PPC_PLT16_HI; break;
1910 case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC_PLT16_HA; break;
1911 case BFD_RELOC_GPREL16: r = R_PPC_SDAREL16; break;
1912 case BFD_RELOC_PPC64_SECTOFF_DS:
1913 case BFD_RELOC_16_BASEREL: r = R_PPC_SECTOFF; break;
1914 case BFD_RELOC_PPC64_SECTOFF_LO_DS:
1915 case BFD_RELOC_LO16_BASEREL: r = R_PPC_SECTOFF_LO; break;
1916 case BFD_RELOC_HI16_BASEREL: r = R_PPC_SECTOFF_HI; break;
1917 case BFD_RELOC_HI16_S_BASEREL: r = R_PPC_SECTOFF_HA; break;
1918 case BFD_RELOC_CTOR: r = R_PPC_ADDR32; break;
1919 case BFD_RELOC_PPC64_TOC16_DS:
1920 case BFD_RELOC_PPC_TOC16: r = R_PPC_TOC16; break;
1921 case BFD_RELOC_PPC_TLS: r = R_PPC_TLS; break;
1922 case BFD_RELOC_PPC_TLSGD: r = R_PPC_TLSGD; break;
1923 case BFD_RELOC_PPC_TLSLD: r = R_PPC_TLSLD; break;
1924 case BFD_RELOC_PPC_DTPMOD: r = R_PPC_DTPMOD32; break;
1925 case BFD_RELOC_PPC64_TPREL16_DS:
1926 case BFD_RELOC_PPC_TPREL16: r = R_PPC_TPREL16; break;
1927 case BFD_RELOC_PPC64_TPREL16_LO_DS:
1928 case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC_TPREL16_LO; break;
1929 case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC_TPREL16_HI; break;
1930 case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC_TPREL16_HA; break;
1931 case BFD_RELOC_PPC_TPREL: r = R_PPC_TPREL32; break;
1932 case BFD_RELOC_PPC64_DTPREL16_DS:
1933 case BFD_RELOC_PPC_DTPREL16: r = R_PPC_DTPREL16; break;
1934 case BFD_RELOC_PPC64_DTPREL16_LO_DS:
1935 case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC_DTPREL16_LO; break;
1936 case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC_DTPREL16_HI; break;
1937 case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC_DTPREL16_HA; break;
1938 case BFD_RELOC_PPC_DTPREL: r = R_PPC_DTPREL32; break;
1939 case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC_GOT_TLSGD16; break;
1940 case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC_GOT_TLSGD16_LO; break;
1941 case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC_GOT_TLSGD16_HI; break;
1942 case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC_GOT_TLSGD16_HA; break;
1943 case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC_GOT_TLSLD16; break;
1944 case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC_GOT_TLSLD16_LO; break;
1945 case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC_GOT_TLSLD16_HI; break;
1946 case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC_GOT_TLSLD16_HA; break;
1947 case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC_GOT_TPREL16; break;
1948 case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC_GOT_TPREL16_LO; break;
1949 case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC_GOT_TPREL16_HI; break;
1950 case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC_GOT_TPREL16_HA; break;
1951 case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC_GOT_DTPREL16; break;
1952 case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC_GOT_DTPREL16_LO; break;
1953 case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC_GOT_DTPREL16_HI; break;
1954 case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC_GOT_DTPREL16_HA; break;
1955 case BFD_RELOC_PPC_EMB_NADDR32: r = R_PPC_EMB_NADDR32; break;
1956 case BFD_RELOC_PPC_EMB_NADDR16: r = R_PPC_EMB_NADDR16; break;
1957 case BFD_RELOC_PPC_EMB_NADDR16_LO: r = R_PPC_EMB_NADDR16_LO; break;
1958 case BFD_RELOC_PPC_EMB_NADDR16_HI: r = R_PPC_EMB_NADDR16_HI; break;
1959 case BFD_RELOC_PPC_EMB_NADDR16_HA: r = R_PPC_EMB_NADDR16_HA; break;
1960 case BFD_RELOC_PPC_EMB_SDAI16: r = R_PPC_EMB_SDAI16; break;
1961 case BFD_RELOC_PPC_EMB_SDA2I16: r = R_PPC_EMB_SDA2I16; break;
1962 case BFD_RELOC_PPC_EMB_SDA2REL: r = R_PPC_EMB_SDA2REL; break;
1963 case BFD_RELOC_PPC_EMB_SDA21: r = R_PPC_EMB_SDA21; break;
1964 case BFD_RELOC_PPC_EMB_MRKREF: r = R_PPC_EMB_MRKREF; break;
1965 case BFD_RELOC_PPC_EMB_RELSEC16: r = R_PPC_EMB_RELSEC16; break;
1966 case BFD_RELOC_PPC_EMB_RELST_LO: r = R_PPC_EMB_RELST_LO; break;
1967 case BFD_RELOC_PPC_EMB_RELST_HI: r = R_PPC_EMB_RELST_HI; break;
1968 case BFD_RELOC_PPC_EMB_RELST_HA: r = R_PPC_EMB_RELST_HA; break;
1969 case BFD_RELOC_PPC_EMB_BIT_FLD: r = R_PPC_EMB_BIT_FLD; break;
1970 case BFD_RELOC_PPC_EMB_RELSDA: r = R_PPC_EMB_RELSDA; break;
1971 case BFD_RELOC_PPC_VLE_REL8: r = R_PPC_VLE_REL8; break;
1972 case BFD_RELOC_PPC_VLE_REL15: r = R_PPC_VLE_REL15; break;
1973 case BFD_RELOC_PPC_VLE_REL24: r = R_PPC_VLE_REL24; break;
1974 case BFD_RELOC_PPC_VLE_LO16A: r = R_PPC_VLE_LO16A; break;
1975 case BFD_RELOC_PPC_VLE_LO16D: r = R_PPC_VLE_LO16D; break;
1976 case BFD_RELOC_PPC_VLE_HI16A: r = R_PPC_VLE_HI16A; break;
1977 case BFD_RELOC_PPC_VLE_HI16D: r = R_PPC_VLE_HI16D; break;
1978 case BFD_RELOC_PPC_VLE_HA16A: r = R_PPC_VLE_HA16A; break;
1979 case BFD_RELOC_PPC_VLE_HA16D: r = R_PPC_VLE_HA16D; break;
1980 case BFD_RELOC_PPC_VLE_SDA21: r = R_PPC_VLE_SDA21; break;
1981 case BFD_RELOC_PPC_VLE_SDA21_LO: r = R_PPC_VLE_SDA21_LO; break;
1982 case BFD_RELOC_PPC_VLE_SDAREL_LO16A:
1983 r = R_PPC_VLE_SDAREL_LO16A;
1984 break;
1985 case BFD_RELOC_PPC_VLE_SDAREL_LO16D:
1986 r = R_PPC_VLE_SDAREL_LO16D;
1987 break;
1988 case BFD_RELOC_PPC_VLE_SDAREL_HI16A:
1989 r = R_PPC_VLE_SDAREL_HI16A;
1990 break;
1991 case BFD_RELOC_PPC_VLE_SDAREL_HI16D:
1992 r = R_PPC_VLE_SDAREL_HI16D;
1993 break;
1994 case BFD_RELOC_PPC_VLE_SDAREL_HA16A:
1995 r = R_PPC_VLE_SDAREL_HA16A;
1996 break;
1997 case BFD_RELOC_PPC_VLE_SDAREL_HA16D:
1998 r = R_PPC_VLE_SDAREL_HA16D;
1999 break;
2000 case BFD_RELOC_16_PCREL: r = R_PPC_REL16; break;
2001 case BFD_RELOC_LO16_PCREL: r = R_PPC_REL16_LO; break;
2002 case BFD_RELOC_HI16_PCREL: r = R_PPC_REL16_HI; break;
2003 case BFD_RELOC_HI16_S_PCREL: r = R_PPC_REL16_HA; break;
2004 case BFD_RELOC_PPC_REL16DX_HA: r = R_PPC_REL16DX_HA; break;
2005 case BFD_RELOC_VTABLE_INHERIT: r = R_PPC_GNU_VTINHERIT; break;
2006 case BFD_RELOC_VTABLE_ENTRY: r = R_PPC_GNU_VTENTRY; break;
2007 }
2008
2009 return ppc_elf_howto_table[r];
2010 };
2011
2012 static reloc_howto_type *
2013 ppc_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
2014 const char *r_name)
2015 {
2016 unsigned int i;
2017
2018 for (i = 0;
2019 i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]);
2020 i++)
2021 if (ppc_elf_howto_raw[i].name != NULL
2022 && strcasecmp (ppc_elf_howto_raw[i].name, r_name) == 0)
2023 return &ppc_elf_howto_raw[i];
2024
2025 return NULL;
2026 }
2027
2028 /* Set the howto pointer for a PowerPC ELF reloc. */
2029
2030 static void
2031 ppc_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED,
2032 arelent *cache_ptr,
2033 Elf_Internal_Rela *dst)
2034 {
2035 unsigned int r_type;
2036
2037 /* Initialize howto table if not already done. */
2038 if (!ppc_elf_howto_table[R_PPC_ADDR32])
2039 ppc_elf_howto_init ();
2040
2041 r_type = ELF32_R_TYPE (dst->r_info);
2042 if (r_type >= R_PPC_max)
2043 {
2044 _bfd_error_handler (_("%B: unrecognised PPC reloc number: %d"),
2045 abfd, r_type);
2046 bfd_set_error (bfd_error_bad_value);
2047 r_type = R_PPC_NONE;
2048 }
2049 cache_ptr->howto = ppc_elf_howto_table[r_type];
2050
2051 /* Just because the above assert didn't trigger doesn't mean that
2052 ELF32_R_TYPE (dst->r_info) is necessarily a valid relocation. */
2053 if (!cache_ptr->howto)
2054 {
2055 _bfd_error_handler (_("%B: invalid relocation type %d"),
2056 abfd, r_type);
2057 bfd_set_error (bfd_error_bad_value);
2058
2059 cache_ptr->howto = ppc_elf_howto_table[R_PPC_NONE];
2060 }
2061 }
2062
2063 /* Handle the R_PPC_ADDR16_HA and R_PPC_REL16_HA relocs. */
2064
2065 static bfd_reloc_status_type
2066 ppc_elf_addr16_ha_reloc (bfd *abfd ATTRIBUTE_UNUSED,
2067 arelent *reloc_entry,
2068 asymbol *symbol,
2069 void *data ATTRIBUTE_UNUSED,
2070 asection *input_section,
2071 bfd *output_bfd,
2072 char **error_message ATTRIBUTE_UNUSED)
2073 {
2074 enum elf_ppc_reloc_type r_type;
2075 long insn;
2076 bfd_size_type octets;
2077 bfd_vma value;
2078
2079 if (output_bfd != NULL)
2080 {
2081 reloc_entry->address += input_section->output_offset;
2082 return bfd_reloc_ok;
2083 }
2084
2085 reloc_entry->addend += 0x8000;
2086 r_type = reloc_entry->howto->type;
2087 if (r_type != R_PPC_REL16DX_HA)
2088 return bfd_reloc_continue;
2089
2090 value = 0;
2091 if (!bfd_is_com_section (symbol->section))
2092 value = symbol->value;
2093 value += (reloc_entry->addend
2094 + symbol->section->output_offset
2095 + symbol->section->output_section->vma);
2096 value -= (reloc_entry->address
2097 + input_section->output_offset
2098 + input_section->output_section->vma);
2099 value >>= 16;
2100
2101 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
2102 insn = bfd_get_32 (abfd, (bfd_byte *) data + octets);
2103 insn &= ~0x1fffc1;
2104 insn |= (value & 0xffc1) | ((value & 0x3e) << 15);
2105 bfd_put_32 (abfd, insn, (bfd_byte *) data + octets);
2106 return bfd_reloc_ok;
2107 }
2108
2109 static bfd_reloc_status_type
2110 ppc_elf_unhandled_reloc (bfd *abfd,
2111 arelent *reloc_entry,
2112 asymbol *symbol,
2113 void *data,
2114 asection *input_section,
2115 bfd *output_bfd,
2116 char **error_message)
2117 {
2118 /* If this is a relocatable link (output_bfd test tells us), just
2119 call the generic function. Any adjustment will be done at final
2120 link time. */
2121 if (output_bfd != NULL)
2122 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2123 input_section, output_bfd, error_message);
2124
2125 if (error_message != NULL)
2126 {
2127 static char buf[60];
2128 sprintf (buf, _("generic linker can't handle %s"),
2129 reloc_entry->howto->name);
2130 *error_message = buf;
2131 }
2132 return bfd_reloc_dangerous;
2133 }
2134 \f
2135 /* Sections created by the linker. */
2136
2137 typedef struct elf_linker_section
2138 {
2139 /* Pointer to the bfd section. */
2140 asection *section;
2141 /* Section name. */
2142 const char *name;
2143 /* Associated bss section name. */
2144 const char *bss_name;
2145 /* Associated symbol name. */
2146 const char *sym_name;
2147 /* Associated symbol. */
2148 struct elf_link_hash_entry *sym;
2149 } elf_linker_section_t;
2150
2151 /* Linked list of allocated pointer entries. This hangs off of the
2152 symbol lists, and provides allows us to return different pointers,
2153 based on different addend's. */
2154
2155 typedef struct elf_linker_section_pointers
2156 {
2157 /* next allocated pointer for this symbol */
2158 struct elf_linker_section_pointers *next;
2159 /* offset of pointer from beginning of section */
2160 bfd_vma offset;
2161 /* addend used */
2162 bfd_vma addend;
2163 /* which linker section this is */
2164 elf_linker_section_t *lsect;
2165 } elf_linker_section_pointers_t;
2166
2167 struct ppc_elf_obj_tdata
2168 {
2169 struct elf_obj_tdata elf;
2170
2171 /* A mapping from local symbols to offsets into the various linker
2172 sections added. This is index by the symbol index. */
2173 elf_linker_section_pointers_t **linker_section_pointers;
2174
2175 /* Flags used to auto-detect plt type. */
2176 unsigned int makes_plt_call : 1;
2177 unsigned int has_rel16 : 1;
2178 };
2179
2180 #define ppc_elf_tdata(bfd) \
2181 ((struct ppc_elf_obj_tdata *) (bfd)->tdata.any)
2182
2183 #define elf_local_ptr_offsets(bfd) \
2184 (ppc_elf_tdata (bfd)->linker_section_pointers)
2185
2186 #define is_ppc_elf(bfd) \
2187 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
2188 && elf_object_id (bfd) == PPC32_ELF_DATA)
2189
2190 /* Override the generic function because we store some extras. */
2191
2192 static bfd_boolean
2193 ppc_elf_mkobject (bfd *abfd)
2194 {
2195 return bfd_elf_allocate_object (abfd, sizeof (struct ppc_elf_obj_tdata),
2196 PPC32_ELF_DATA);
2197 }
2198
2199 /* When defaulting arch/mach, decode apuinfo to find a better match. */
2200
2201 bfd_boolean
2202 _bfd_elf_ppc_set_arch (bfd *abfd)
2203 {
2204 unsigned long mach = 0;
2205 asection *s;
2206 unsigned char *contents;
2207
2208 if (abfd->arch_info->bits_per_word == 32
2209 && bfd_big_endian (abfd))
2210 {
2211
2212 for (s = abfd->sections; s != NULL; s = s->next)
2213 if ((elf_section_data (s)->this_hdr.sh_flags & SHF_PPC_VLE) != 0)
2214 break;
2215 if (s != NULL)
2216 mach = bfd_mach_ppc_vle;
2217 }
2218
2219 if (mach == 0)
2220 {
2221 s = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2222 if (s != NULL && bfd_malloc_and_get_section (abfd, s, &contents))
2223 {
2224 unsigned int apuinfo_size = bfd_get_32 (abfd, contents + 4);
2225 unsigned int i;
2226
2227 for (i = 20; i < apuinfo_size + 20 && i + 4 <= s->size; i += 4)
2228 {
2229 unsigned int val = bfd_get_32 (abfd, contents + i);
2230 switch (val >> 16)
2231 {
2232 case PPC_APUINFO_PMR:
2233 case PPC_APUINFO_RFMCI:
2234 if (mach == 0)
2235 mach = bfd_mach_ppc_titan;
2236 break;
2237
2238 case PPC_APUINFO_ISEL:
2239 case PPC_APUINFO_CACHELCK:
2240 if (mach == bfd_mach_ppc_titan)
2241 mach = bfd_mach_ppc_e500mc;
2242 break;
2243
2244 case PPC_APUINFO_SPE:
2245 case PPC_APUINFO_EFS:
2246 case PPC_APUINFO_BRLOCK:
2247 if (mach != bfd_mach_ppc_vle)
2248 mach = bfd_mach_ppc_e500;
2249 break;
2250
2251 case PPC_APUINFO_VLE:
2252 mach = bfd_mach_ppc_vle;
2253 break;
2254
2255 default:
2256 mach = -1ul;
2257 }
2258 }
2259 free (contents);
2260 }
2261 }
2262
2263 if (mach != 0 && mach != -1ul)
2264 {
2265 const bfd_arch_info_type *arch;
2266
2267 for (arch = abfd->arch_info->next; arch; arch = arch->next)
2268 if (arch->mach == mach)
2269 {
2270 abfd->arch_info = arch;
2271 break;
2272 }
2273 }
2274 return TRUE;
2275 }
2276
2277 /* Fix bad default arch selected for a 32 bit input bfd when the
2278 default is 64 bit. Also select arch based on apuinfo. */
2279
2280 static bfd_boolean
2281 ppc_elf_object_p (bfd *abfd)
2282 {
2283 if (!abfd->arch_info->the_default)
2284 return TRUE;
2285
2286 if (abfd->arch_info->bits_per_word == 64)
2287 {
2288 Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd);
2289
2290 if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS32)
2291 {
2292 /* Relies on arch after 64 bit default being 32 bit default. */
2293 abfd->arch_info = abfd->arch_info->next;
2294 BFD_ASSERT (abfd->arch_info->bits_per_word == 32);
2295 }
2296 }
2297 return _bfd_elf_ppc_set_arch (abfd);
2298 }
2299
2300 /* Function to set whether a module needs the -mrelocatable bit set. */
2301
2302 static bfd_boolean
2303 ppc_elf_set_private_flags (bfd *abfd, flagword flags)
2304 {
2305 BFD_ASSERT (!elf_flags_init (abfd)
2306 || elf_elfheader (abfd)->e_flags == flags);
2307
2308 elf_elfheader (abfd)->e_flags = flags;
2309 elf_flags_init (abfd) = TRUE;
2310 return TRUE;
2311 }
2312
2313 /* Support for core dump NOTE sections. */
2314
2315 static bfd_boolean
2316 ppc_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
2317 {
2318 int offset;
2319 unsigned int size;
2320
2321 switch (note->descsz)
2322 {
2323 default:
2324 return FALSE;
2325
2326 case 268: /* Linux/PPC. */
2327 /* pr_cursig */
2328 elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12);
2329
2330 /* pr_pid */
2331 elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 24);
2332
2333 /* pr_reg */
2334 offset = 72;
2335 size = 192;
2336
2337 break;
2338 }
2339
2340 /* Make a ".reg/999" section. */
2341 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
2342 size, note->descpos + offset);
2343 }
2344
2345 static bfd_boolean
2346 ppc_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
2347 {
2348 switch (note->descsz)
2349 {
2350 default:
2351 return FALSE;
2352
2353 case 128: /* Linux/PPC elf_prpsinfo. */
2354 elf_tdata (abfd)->core->pid
2355 = bfd_get_32 (abfd, note->descdata + 16);
2356 elf_tdata (abfd)->core->program
2357 = _bfd_elfcore_strndup (abfd, note->descdata + 32, 16);
2358 elf_tdata (abfd)->core->command
2359 = _bfd_elfcore_strndup (abfd, note->descdata + 48, 80);
2360 }
2361
2362 /* Note that for some reason, a spurious space is tacked
2363 onto the end of the args in some (at least one anyway)
2364 implementations, so strip it off if it exists. */
2365
2366 {
2367 char *command = elf_tdata (abfd)->core->command;
2368 int n = strlen (command);
2369
2370 if (0 < n && command[n - 1] == ' ')
2371 command[n - 1] = '\0';
2372 }
2373
2374 return TRUE;
2375 }
2376
2377 char *
2378 elfcore_write_ppc_linux_prpsinfo32
2379 (bfd *abfd,
2380 char *buf,
2381 int *bufsiz,
2382 const struct elf_internal_linux_prpsinfo *prpsinfo)
2383 {
2384 struct elf_external_ppc_linux_prpsinfo32 data;
2385
2386 swap_ppc_linux_prpsinfo32_out (abfd, prpsinfo, &data);
2387 return elfcore_write_note (abfd, buf, bufsiz,
2388 "CORE", NT_PRPSINFO, &data, sizeof (data));
2389 }
2390
2391 static char *
2392 ppc_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type, ...)
2393 {
2394 switch (note_type)
2395 {
2396 default:
2397 return NULL;
2398
2399 case NT_PRPSINFO:
2400 {
2401 char data[128];
2402 va_list ap;
2403
2404 va_start (ap, note_type);
2405 memset (data, 0, sizeof (data));
2406 strncpy (data + 32, va_arg (ap, const char *), 16);
2407 strncpy (data + 48, va_arg (ap, const char *), 80);
2408 va_end (ap);
2409 return elfcore_write_note (abfd, buf, bufsiz,
2410 "CORE", note_type, data, sizeof (data));
2411 }
2412
2413 case NT_PRSTATUS:
2414 {
2415 char data[268];
2416 va_list ap;
2417 long pid;
2418 int cursig;
2419 const void *greg;
2420
2421 va_start (ap, note_type);
2422 memset (data, 0, 72);
2423 pid = va_arg (ap, long);
2424 bfd_put_32 (abfd, pid, data + 24);
2425 cursig = va_arg (ap, int);
2426 bfd_put_16 (abfd, cursig, data + 12);
2427 greg = va_arg (ap, const void *);
2428 memcpy (data + 72, greg, 192);
2429 memset (data + 264, 0, 4);
2430 va_end (ap);
2431 return elfcore_write_note (abfd, buf, bufsiz,
2432 "CORE", note_type, data, sizeof (data));
2433 }
2434 }
2435 }
2436
2437 static flagword
2438 ppc_elf_lookup_section_flags (char *flag_name)
2439 {
2440
2441 if (!strcmp (flag_name, "SHF_PPC_VLE"))
2442 return SHF_PPC_VLE;
2443
2444 return 0;
2445 }
2446
2447 /* Return address for Ith PLT stub in section PLT, for relocation REL
2448 or (bfd_vma) -1 if it should not be included. */
2449
2450 static bfd_vma
2451 ppc_elf_plt_sym_val (bfd_vma i ATTRIBUTE_UNUSED,
2452 const asection *plt ATTRIBUTE_UNUSED,
2453 const arelent *rel)
2454 {
2455 return rel->address;
2456 }
2457
2458 /* Handle a PowerPC specific section when reading an object file. This
2459 is called when bfd_section_from_shdr finds a section with an unknown
2460 type. */
2461
2462 static bfd_boolean
2463 ppc_elf_section_from_shdr (bfd *abfd,
2464 Elf_Internal_Shdr *hdr,
2465 const char *name,
2466 int shindex)
2467 {
2468 asection *newsect;
2469 flagword flags;
2470
2471 if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
2472 return FALSE;
2473
2474 newsect = hdr->bfd_section;
2475 flags = bfd_get_section_flags (abfd, newsect);
2476 if (hdr->sh_flags & SHF_EXCLUDE)
2477 flags |= SEC_EXCLUDE;
2478
2479 if (hdr->sh_type == SHT_ORDERED)
2480 flags |= SEC_SORT_ENTRIES;
2481
2482 bfd_set_section_flags (abfd, newsect, flags);
2483 return TRUE;
2484 }
2485
2486 /* Set up any other section flags and such that may be necessary. */
2487
2488 static bfd_boolean
2489 ppc_elf_fake_sections (bfd *abfd ATTRIBUTE_UNUSED,
2490 Elf_Internal_Shdr *shdr,
2491 asection *asect)
2492 {
2493 if ((asect->flags & SEC_SORT_ENTRIES) != 0)
2494 shdr->sh_type = SHT_ORDERED;
2495
2496 return TRUE;
2497 }
2498
2499 /* If we have .sbss2 or .PPC.EMB.sbss0 output sections, we
2500 need to bump up the number of section headers. */
2501
2502 static int
2503 ppc_elf_additional_program_headers (bfd *abfd,
2504 struct bfd_link_info *info ATTRIBUTE_UNUSED)
2505 {
2506 asection *s;
2507 int ret = 0;
2508
2509 s = bfd_get_section_by_name (abfd, ".sbss2");
2510 if (s != NULL && (s->flags & SEC_ALLOC) != 0)
2511 ++ret;
2512
2513 s = bfd_get_section_by_name (abfd, ".PPC.EMB.sbss0");
2514 if (s != NULL && (s->flags & SEC_ALLOC) != 0)
2515 ++ret;
2516
2517 return ret;
2518 }
2519
2520 /* Modify the segment map for VLE executables. */
2521
2522 bfd_boolean
2523 ppc_elf_modify_segment_map (bfd *abfd,
2524 struct bfd_link_info *info ATTRIBUTE_UNUSED)
2525 {
2526 struct elf_segment_map *m;
2527
2528 /* At this point in the link, output sections have already been sorted by
2529 LMA and assigned to segments. All that is left to do is to ensure
2530 there is no mixing of VLE & non-VLE sections in a text segment.
2531 If we find that case, we split the segment.
2532 We maintain the original output section order. */
2533
2534 for (m = elf_seg_map (abfd); m != NULL; m = m->next)
2535 {
2536 struct elf_segment_map *n;
2537 bfd_size_type amt;
2538 unsigned int j, k;
2539 unsigned int p_flags;
2540
2541 if (m->p_type != PT_LOAD || m->count == 0)
2542 continue;
2543
2544 for (p_flags = PF_R, j = 0; j != m->count; ++j)
2545 {
2546 if ((m->sections[j]->flags & SEC_READONLY) == 0)
2547 p_flags |= PF_W;
2548 if ((m->sections[j]->flags & SEC_CODE) != 0)
2549 {
2550 p_flags |= PF_X;
2551 if ((elf_section_flags (m->sections[j]) & SHF_PPC_VLE) != 0)
2552 p_flags |= PF_PPC_VLE;
2553 break;
2554 }
2555 }
2556 if (j != m->count)
2557 while (++j != m->count)
2558 {
2559 unsigned int p_flags1 = PF_R;
2560
2561 if ((m->sections[j]->flags & SEC_READONLY) == 0)
2562 p_flags1 |= PF_W;
2563 if ((m->sections[j]->flags & SEC_CODE) != 0)
2564 {
2565 p_flags1 |= PF_X;
2566 if ((elf_section_flags (m->sections[j]) & SHF_PPC_VLE) != 0)
2567 p_flags1 |= PF_PPC_VLE;
2568 if (((p_flags1 ^ p_flags) & PF_PPC_VLE) != 0)
2569 break;
2570 }
2571 p_flags |= p_flags1;
2572 }
2573 /* If we're splitting a segment which originally contained rw
2574 sections then those sections might now only be in one of the
2575 two parts. So always set p_flags if splitting, even if we
2576 are being called for objcopy with p_flags_valid set. */
2577 if (j != m->count || !m->p_flags_valid)
2578 {
2579 m->p_flags_valid = 1;
2580 m->p_flags = p_flags;
2581 }
2582 if (j == m->count)
2583 continue;
2584
2585 /* Sections 0..j-1 stay in this (current) segment,
2586 the remainder are put in a new segment.
2587 The scan resumes with the new segment. */
2588
2589 amt = sizeof (struct elf_segment_map);
2590 amt += (m->count - j - 1) * sizeof (asection *);
2591 n = (struct elf_segment_map *) bfd_zalloc (abfd, amt);
2592 if (n == NULL)
2593 return FALSE;
2594
2595 n->p_type = PT_LOAD;
2596 n->count = m->count - j;
2597 for (k = 0; k < n->count; ++k)
2598 n->sections[k] = m->sections[j + k];
2599 m->count = j;
2600 m->p_size_valid = 0;
2601 n->next = m->next;
2602 m->next = n;
2603 }
2604
2605 return TRUE;
2606 }
2607
2608 /* Add extra PPC sections -- Note, for now, make .sbss2 and
2609 .PPC.EMB.sbss0 a normal section, and not a bss section so
2610 that the linker doesn't crater when trying to make more than
2611 2 sections. */
2612
2613 static const struct bfd_elf_special_section ppc_elf_special_sections[] =
2614 {
2615 { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, SHF_ALLOC + SHF_EXECINSTR },
2616 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2617 { STRING_COMMA_LEN (".sbss2"), -2, SHT_PROGBITS, SHF_ALLOC },
2618 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2619 { STRING_COMMA_LEN (".sdata2"), -2, SHT_PROGBITS, SHF_ALLOC },
2620 { STRING_COMMA_LEN (".tags"), 0, SHT_ORDERED, SHF_ALLOC },
2621 { STRING_COMMA_LEN (APUINFO_SECTION_NAME), 0, SHT_NOTE, 0 },
2622 { STRING_COMMA_LEN (".PPC.EMB.sbss0"), 0, SHT_PROGBITS, SHF_ALLOC },
2623 { STRING_COMMA_LEN (".PPC.EMB.sdata0"), 0, SHT_PROGBITS, SHF_ALLOC },
2624 { NULL, 0, 0, 0, 0 }
2625 };
2626
2627 /* This is what we want for new plt/got. */
2628 static struct bfd_elf_special_section ppc_alt_plt =
2629 { STRING_COMMA_LEN (".plt"), 0, SHT_PROGBITS, SHF_ALLOC };
2630
2631 static const struct bfd_elf_special_section *
2632 ppc_elf_get_sec_type_attr (bfd *abfd ATTRIBUTE_UNUSED, asection *sec)
2633 {
2634 const struct bfd_elf_special_section *ssect;
2635
2636 /* See if this is one of the special sections. */
2637 if (sec->name == NULL)
2638 return NULL;
2639
2640 ssect = _bfd_elf_get_special_section (sec->name, ppc_elf_special_sections,
2641 sec->use_rela_p);
2642 if (ssect != NULL)
2643 {
2644 if (ssect == ppc_elf_special_sections && (sec->flags & SEC_LOAD) != 0)
2645 ssect = &ppc_alt_plt;
2646 return ssect;
2647 }
2648
2649 return _bfd_elf_get_sec_type_attr (abfd, sec);
2650 }
2651 \f
2652 /* Very simple linked list structure for recording apuinfo values. */
2653 typedef struct apuinfo_list
2654 {
2655 struct apuinfo_list *next;
2656 unsigned long value;
2657 }
2658 apuinfo_list;
2659
2660 static apuinfo_list *head;
2661 static bfd_boolean apuinfo_set;
2662
2663 static void
2664 apuinfo_list_init (void)
2665 {
2666 head = NULL;
2667 apuinfo_set = FALSE;
2668 }
2669
2670 static void
2671 apuinfo_list_add (unsigned long value)
2672 {
2673 apuinfo_list *entry = head;
2674
2675 while (entry != NULL)
2676 {
2677 if (entry->value == value)
2678 return;
2679 entry = entry->next;
2680 }
2681
2682 entry = bfd_malloc (sizeof (* entry));
2683 if (entry == NULL)
2684 return;
2685
2686 entry->value = value;
2687 entry->next = head;
2688 head = entry;
2689 }
2690
2691 static unsigned
2692 apuinfo_list_length (void)
2693 {
2694 apuinfo_list *entry;
2695 unsigned long count;
2696
2697 for (entry = head, count = 0;
2698 entry;
2699 entry = entry->next)
2700 ++ count;
2701
2702 return count;
2703 }
2704
2705 static inline unsigned long
2706 apuinfo_list_element (unsigned long number)
2707 {
2708 apuinfo_list * entry;
2709
2710 for (entry = head;
2711 entry && number --;
2712 entry = entry->next)
2713 ;
2714
2715 return entry ? entry->value : 0;
2716 }
2717
2718 static void
2719 apuinfo_list_finish (void)
2720 {
2721 apuinfo_list *entry;
2722
2723 for (entry = head; entry;)
2724 {
2725 apuinfo_list *next = entry->next;
2726 free (entry);
2727 entry = next;
2728 }
2729
2730 head = NULL;
2731 }
2732
2733 /* Scan the input BFDs and create a linked list of
2734 the APUinfo values that will need to be emitted. */
2735
2736 static void
2737 ppc_elf_begin_write_processing (bfd *abfd, struct bfd_link_info *link_info)
2738 {
2739 bfd *ibfd;
2740 asection *asec;
2741 char *buffer = NULL;
2742 bfd_size_type largest_input_size = 0;
2743 unsigned i;
2744 unsigned long length;
2745 const char *error_message = NULL;
2746
2747 if (link_info == NULL)
2748 return;
2749
2750 apuinfo_list_init ();
2751
2752 /* Read in the input sections contents. */
2753 for (ibfd = link_info->input_bfds; ibfd; ibfd = ibfd->link.next)
2754 {
2755 unsigned long datum;
2756
2757 asec = bfd_get_section_by_name (ibfd, APUINFO_SECTION_NAME);
2758 if (asec == NULL)
2759 continue;
2760
2761 error_message = _("corrupt %s section in %B");
2762 length = asec->size;
2763 if (length < 20)
2764 goto fail;
2765
2766 apuinfo_set = TRUE;
2767 if (largest_input_size < asec->size)
2768 {
2769 if (buffer)
2770 free (buffer);
2771 largest_input_size = asec->size;
2772 buffer = bfd_malloc (largest_input_size);
2773 if (!buffer)
2774 return;
2775 }
2776
2777 if (bfd_seek (ibfd, asec->filepos, SEEK_SET) != 0
2778 || (bfd_bread (buffer, length, ibfd) != length))
2779 {
2780 error_message = _("unable to read in %s section from %B");
2781 goto fail;
2782 }
2783
2784 /* Verify the contents of the header. Note - we have to
2785 extract the values this way in order to allow for a
2786 host whose endian-ness is different from the target. */
2787 datum = bfd_get_32 (ibfd, buffer);
2788 if (datum != sizeof APUINFO_LABEL)
2789 goto fail;
2790
2791 datum = bfd_get_32 (ibfd, buffer + 8);
2792 if (datum != 0x2)
2793 goto fail;
2794
2795 if (strcmp (buffer + 12, APUINFO_LABEL) != 0)
2796 goto fail;
2797
2798 /* Get the number of bytes used for apuinfo entries. */
2799 datum = bfd_get_32 (ibfd, buffer + 4);
2800 if (datum + 20 != length)
2801 goto fail;
2802
2803 /* Scan the apuinfo section, building a list of apuinfo numbers. */
2804 for (i = 0; i < datum; i += 4)
2805 apuinfo_list_add (bfd_get_32 (ibfd, buffer + 20 + i));
2806 }
2807
2808 error_message = NULL;
2809
2810 if (apuinfo_set)
2811 {
2812 /* Compute the size of the output section. */
2813 unsigned num_entries = apuinfo_list_length ();
2814
2815 /* Set the output section size, if it exists. */
2816 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2817
2818 if (asec && ! bfd_set_section_size (abfd, asec, 20 + num_entries * 4))
2819 {
2820 ibfd = abfd;
2821 error_message = _("warning: unable to set size of %s section in %B");
2822 }
2823 }
2824
2825 fail:
2826 if (buffer)
2827 free (buffer);
2828
2829 if (error_message)
2830 _bfd_error_handler (error_message, ibfd, APUINFO_SECTION_NAME);
2831 }
2832
2833 /* Prevent the output section from accumulating the input sections'
2834 contents. We have already stored this in our linked list structure. */
2835
2836 static bfd_boolean
2837 ppc_elf_write_section (bfd *abfd ATTRIBUTE_UNUSED,
2838 struct bfd_link_info *link_info ATTRIBUTE_UNUSED,
2839 asection *asec,
2840 bfd_byte *contents ATTRIBUTE_UNUSED)
2841 {
2842 return apuinfo_set && strcmp (asec->name, APUINFO_SECTION_NAME) == 0;
2843 }
2844
2845 /* Finally we can generate the output section. */
2846
2847 static void
2848 ppc_elf_final_write_processing (bfd *abfd, bfd_boolean linker ATTRIBUTE_UNUSED)
2849 {
2850 bfd_byte *buffer;
2851 asection *asec;
2852 unsigned i;
2853 unsigned num_entries;
2854 bfd_size_type length;
2855
2856 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2857 if (asec == NULL)
2858 return;
2859
2860 if (!apuinfo_set)
2861 return;
2862
2863 length = asec->size;
2864 if (length < 20)
2865 return;
2866
2867 buffer = bfd_malloc (length);
2868 if (buffer == NULL)
2869 {
2870 _bfd_error_handler
2871 (_("failed to allocate space for new APUinfo section."));
2872 return;
2873 }
2874
2875 /* Create the apuinfo header. */
2876 num_entries = apuinfo_list_length ();
2877 bfd_put_32 (abfd, sizeof APUINFO_LABEL, buffer);
2878 bfd_put_32 (abfd, num_entries * 4, buffer + 4);
2879 bfd_put_32 (abfd, 0x2, buffer + 8);
2880 strcpy ((char *) buffer + 12, APUINFO_LABEL);
2881
2882 length = 20;
2883 for (i = 0; i < num_entries; i++)
2884 {
2885 bfd_put_32 (abfd, apuinfo_list_element (i), buffer + length);
2886 length += 4;
2887 }
2888
2889 if (length != asec->size)
2890 _bfd_error_handler (_("failed to compute new APUinfo section."));
2891
2892 if (! bfd_set_section_contents (abfd, asec, buffer, (file_ptr) 0, length))
2893 _bfd_error_handler (_("failed to install new APUinfo section."));
2894
2895 free (buffer);
2896
2897 apuinfo_list_finish ();
2898 }
2899 \f
2900 static bfd_boolean
2901 is_nonpic_glink_stub (bfd *abfd, asection *glink, bfd_vma off)
2902 {
2903 bfd_byte buf[GLINK_ENTRY_SIZE];
2904
2905 if (!bfd_get_section_contents (abfd, glink, buf, off, GLINK_ENTRY_SIZE))
2906 return FALSE;
2907
2908 return ((bfd_get_32 (abfd, buf + 0) & 0xffff0000) == LIS_11
2909 && (bfd_get_32 (abfd, buf + 4) & 0xffff0000) == LWZ_11_11
2910 && bfd_get_32 (abfd, buf + 8) == MTCTR_11
2911 && bfd_get_32 (abfd, buf + 12) == BCTR);
2912 }
2913
2914 static bfd_boolean
2915 section_covers_vma (bfd *abfd ATTRIBUTE_UNUSED, asection *section, void *ptr)
2916 {
2917 bfd_vma vma = *(bfd_vma *) ptr;
2918 return ((section->flags & SEC_ALLOC) != 0
2919 && section->vma <= vma
2920 && vma < section->vma + section->size);
2921 }
2922
2923 static long
2924 ppc_elf_get_synthetic_symtab (bfd *abfd, long symcount, asymbol **syms,
2925 long dynsymcount, asymbol **dynsyms,
2926 asymbol **ret)
2927 {
2928 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
2929 asection *plt, *relplt, *dynamic, *glink;
2930 bfd_vma glink_vma = 0;
2931 bfd_vma resolv_vma = 0;
2932 bfd_vma stub_vma;
2933 asymbol *s;
2934 arelent *p;
2935 long count, i;
2936 size_t size;
2937 char *names;
2938 bfd_byte buf[4];
2939
2940 *ret = NULL;
2941
2942 if ((abfd->flags & (DYNAMIC | EXEC_P)) == 0)
2943 return 0;
2944
2945 if (dynsymcount <= 0)
2946 return 0;
2947
2948 relplt = bfd_get_section_by_name (abfd, ".rela.plt");
2949 if (relplt == NULL)
2950 return 0;
2951
2952 plt = bfd_get_section_by_name (abfd, ".plt");
2953 if (plt == NULL)
2954 return 0;
2955
2956 /* Call common code to handle old-style executable PLTs. */
2957 if (elf_section_flags (plt) & SHF_EXECINSTR)
2958 return _bfd_elf_get_synthetic_symtab (abfd, symcount, syms,
2959 dynsymcount, dynsyms, ret);
2960
2961 /* If this object was prelinked, the prelinker stored the address
2962 of .glink at got[1]. If it wasn't prelinked, got[1] will be zero. */
2963 dynamic = bfd_get_section_by_name (abfd, ".dynamic");
2964 if (dynamic != NULL)
2965 {
2966 bfd_byte *dynbuf, *extdyn, *extdynend;
2967 size_t extdynsize;
2968 void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *);
2969
2970 if (!bfd_malloc_and_get_section (abfd, dynamic, &dynbuf))
2971 return -1;
2972
2973 extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn;
2974 swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in;
2975
2976 extdyn = dynbuf;
2977 extdynend = extdyn + dynamic->size;
2978 for (; extdyn < extdynend; extdyn += extdynsize)
2979 {
2980 Elf_Internal_Dyn dyn;
2981 (*swap_dyn_in) (abfd, extdyn, &dyn);
2982
2983 if (dyn.d_tag == DT_NULL)
2984 break;
2985
2986 if (dyn.d_tag == DT_PPC_GOT)
2987 {
2988 unsigned int g_o_t = dyn.d_un.d_val;
2989 asection *got = bfd_get_section_by_name (abfd, ".got");
2990 if (got != NULL
2991 && bfd_get_section_contents (abfd, got, buf,
2992 g_o_t - got->vma + 4, 4))
2993 glink_vma = bfd_get_32 (abfd, buf);
2994 break;
2995 }
2996 }
2997 free (dynbuf);
2998 }
2999
3000 /* Otherwise we read the first plt entry. */
3001 if (glink_vma == 0)
3002 {
3003 if (bfd_get_section_contents (abfd, plt, buf, 0, 4))
3004 glink_vma = bfd_get_32 (abfd, buf);
3005 }
3006
3007 if (glink_vma == 0)
3008 return 0;
3009
3010 /* The .glink section usually does not survive the final
3011 link; search for the section (usually .text) where the
3012 glink stubs now reside. */
3013 glink = bfd_sections_find_if (abfd, section_covers_vma, &glink_vma);
3014 if (glink == NULL)
3015 return 0;
3016
3017 /* Determine glink PLT resolver by reading the relative branch
3018 from the first glink stub. */
3019 if (bfd_get_section_contents (abfd, glink, buf,
3020 glink_vma - glink->vma, 4))
3021 {
3022 unsigned int insn = bfd_get_32 (abfd, buf);
3023
3024 /* The first glink stub may either branch to the resolver ... */
3025 insn ^= B;
3026 if ((insn & ~0x3fffffc) == 0)
3027 resolv_vma = glink_vma + (insn ^ 0x2000000) - 0x2000000;
3028
3029 /* ... or fall through a bunch of NOPs. */
3030 else if ((insn ^ B ^ NOP) == 0)
3031 for (i = 4;
3032 bfd_get_section_contents (abfd, glink, buf,
3033 glink_vma - glink->vma + i, 4);
3034 i += 4)
3035 if (bfd_get_32 (abfd, buf) != NOP)
3036 {
3037 resolv_vma = glink_vma + i;
3038 break;
3039 }
3040 }
3041
3042 count = relplt->size / sizeof (Elf32_External_Rela);
3043 /* If the stubs are those for -shared/-pie then we might have
3044 multiple stubs for each plt entry. If that is the case then
3045 there is no way to associate stubs with their plt entries short
3046 of figuring out the GOT pointer value used in the stub. */
3047 if (!is_nonpic_glink_stub (abfd, glink,
3048 glink_vma - GLINK_ENTRY_SIZE - glink->vma))
3049 return 0;
3050
3051 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
3052 if (! (*slurp_relocs) (abfd, relplt, dynsyms, TRUE))
3053 return -1;
3054
3055 size = count * sizeof (asymbol);
3056 p = relplt->relocation;
3057 for (i = 0; i < count; i++, p++)
3058 {
3059 size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt");
3060 if (p->addend != 0)
3061 size += sizeof ("+0x") - 1 + 8;
3062 }
3063
3064 size += sizeof (asymbol) + sizeof ("__glink");
3065
3066 if (resolv_vma)
3067 size += sizeof (asymbol) + sizeof ("__glink_PLTresolve");
3068
3069 s = *ret = bfd_malloc (size);
3070 if (s == NULL)
3071 return -1;
3072
3073 stub_vma = glink_vma;
3074 names = (char *) (s + count + 1 + (resolv_vma != 0));
3075 p = relplt->relocation + count - 1;
3076 for (i = 0; i < count; i++)
3077 {
3078 size_t len;
3079
3080 *s = **p->sym_ptr_ptr;
3081 /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since
3082 we are defining a symbol, ensure one of them is set. */
3083 if ((s->flags & BSF_LOCAL) == 0)
3084 s->flags |= BSF_GLOBAL;
3085 s->flags |= BSF_SYNTHETIC;
3086 s->section = glink;
3087 stub_vma -= 16;
3088 if (strcmp ((*p->sym_ptr_ptr)->name, "__tls_get_addr_opt") == 0)
3089 stub_vma -= 32;
3090 s->value = stub_vma - glink->vma;
3091 s->name = names;
3092 s->udata.p = NULL;
3093 len = strlen ((*p->sym_ptr_ptr)->name);
3094 memcpy (names, (*p->sym_ptr_ptr)->name, len);
3095 names += len;
3096 if (p->addend != 0)
3097 {
3098 memcpy (names, "+0x", sizeof ("+0x") - 1);
3099 names += sizeof ("+0x") - 1;
3100 bfd_sprintf_vma (abfd, names, p->addend);
3101 names += strlen (names);
3102 }
3103 memcpy (names, "@plt", sizeof ("@plt"));
3104 names += sizeof ("@plt");
3105 ++s;
3106 --p;
3107 }
3108
3109 /* Add a symbol at the start of the glink branch table. */
3110 memset (s, 0, sizeof *s);
3111 s->the_bfd = abfd;
3112 s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
3113 s->section = glink;
3114 s->value = glink_vma - glink->vma;
3115 s->name = names;
3116 memcpy (names, "__glink", sizeof ("__glink"));
3117 names += sizeof ("__glink");
3118 s++;
3119 count++;
3120
3121 if (resolv_vma)
3122 {
3123 /* Add a symbol for the glink PLT resolver. */
3124 memset (s, 0, sizeof *s);
3125 s->the_bfd = abfd;
3126 s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
3127 s->section = glink;
3128 s->value = resolv_vma - glink->vma;
3129 s->name = names;
3130 memcpy (names, "__glink_PLTresolve", sizeof ("__glink_PLTresolve"));
3131 names += sizeof ("__glink_PLTresolve");
3132 s++;
3133 count++;
3134 }
3135
3136 return count;
3137 }
3138 \f
3139 /* The following functions are specific to the ELF linker, while
3140 functions above are used generally. They appear in this file more
3141 or less in the order in which they are called. eg.
3142 ppc_elf_check_relocs is called early in the link process,
3143 ppc_elf_finish_dynamic_sections is one of the last functions
3144 called. */
3145
3146 /* Track PLT entries needed for a given symbol. We might need more
3147 than one glink entry per symbol when generating a pic binary. */
3148 struct plt_entry
3149 {
3150 struct plt_entry *next;
3151
3152 /* -fPIC uses multiple GOT sections, one per file, called ".got2".
3153 This field stores the offset into .got2 used to initialise the
3154 GOT pointer reg. It will always be at least 32768. (Current
3155 gcc always uses an offset of 32768, but ld -r will pack .got2
3156 sections together resulting in larger offsets). */
3157 bfd_vma addend;
3158
3159 /* The .got2 section. */
3160 asection *sec;
3161
3162 /* PLT refcount or offset. */
3163 union
3164 {
3165 bfd_signed_vma refcount;
3166 bfd_vma offset;
3167 } plt;
3168
3169 /* .glink stub offset. */
3170 bfd_vma glink_offset;
3171 };
3172
3173 /* Of those relocs that might be copied as dynamic relocs, this function
3174 selects those that must be copied when linking a shared library,
3175 even when the symbol is local. */
3176
3177 static int
3178 must_be_dyn_reloc (struct bfd_link_info *info,
3179 enum elf_ppc_reloc_type r_type)
3180 {
3181 switch (r_type)
3182 {
3183 default:
3184 return 1;
3185
3186 case R_PPC_REL24:
3187 case R_PPC_REL14:
3188 case R_PPC_REL14_BRTAKEN:
3189 case R_PPC_REL14_BRNTAKEN:
3190 case R_PPC_REL32:
3191 return 0;
3192
3193 case R_PPC_TPREL32:
3194 case R_PPC_TPREL16:
3195 case R_PPC_TPREL16_LO:
3196 case R_PPC_TPREL16_HI:
3197 case R_PPC_TPREL16_HA:
3198 return !bfd_link_executable (info);
3199 }
3200 }
3201
3202 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
3203 copying dynamic variables from a shared lib into an app's dynbss
3204 section, and instead use a dynamic relocation to point into the
3205 shared lib. */
3206 #define ELIMINATE_COPY_RELOCS 1
3207
3208 /* Used to track dynamic relocations for local symbols. */
3209 struct ppc_dyn_relocs
3210 {
3211 struct ppc_dyn_relocs *next;
3212
3213 /* The input section of the reloc. */
3214 asection *sec;
3215
3216 /* Total number of relocs copied for the input section. */
3217 unsigned int count : 31;
3218
3219 /* Whether this entry is for STT_GNU_IFUNC symbols. */
3220 unsigned int ifunc : 1;
3221 };
3222
3223 /* PPC ELF linker hash entry. */
3224
3225 struct ppc_elf_link_hash_entry
3226 {
3227 struct elf_link_hash_entry elf;
3228
3229 /* If this symbol is used in the linker created sections, the processor
3230 specific backend uses this field to map the field into the offset
3231 from the beginning of the section. */
3232 elf_linker_section_pointers_t *linker_section_pointer;
3233
3234 /* Track dynamic relocs copied for this symbol. */
3235 struct elf_dyn_relocs *dyn_relocs;
3236
3237 /* Contexts in which symbol is used in the GOT (or TOC).
3238 TLS_GD .. TLS_TLS bits are or'd into the mask as the
3239 corresponding relocs are encountered during check_relocs.
3240 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
3241 indicate the corresponding GOT entry type is not needed. */
3242 #define TLS_GD 1 /* GD reloc. */
3243 #define TLS_LD 2 /* LD reloc. */
3244 #define TLS_TPREL 4 /* TPREL reloc, => IE. */
3245 #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
3246 #define TLS_TLS 16 /* Any TLS reloc. */
3247 #define TLS_TPRELGD 32 /* TPREL reloc resulting from GD->IE. */
3248 #define PLT_IFUNC 64 /* STT_GNU_IFUNC. */
3249 char tls_mask;
3250
3251 /* Nonzero if we have seen a small data relocation referring to this
3252 symbol. */
3253 unsigned char has_sda_refs : 1;
3254
3255 /* Flag use of given relocations. */
3256 unsigned char has_addr16_ha : 1;
3257 unsigned char has_addr16_lo : 1;
3258 };
3259
3260 #define ppc_elf_hash_entry(ent) ((struct ppc_elf_link_hash_entry *) (ent))
3261
3262 /* PPC ELF linker hash table. */
3263
3264 struct ppc_elf_link_hash_table
3265 {
3266 struct elf_link_hash_table elf;
3267
3268 /* Various options passed from the linker. */
3269 struct ppc_elf_params *params;
3270
3271 /* Short-cuts to get to dynamic linker sections. */
3272 asection *got;
3273 asection *relgot;
3274 asection *glink;
3275 asection *plt;
3276 asection *relplt;
3277 asection *iplt;
3278 asection *reliplt;
3279 asection *dynbss;
3280 asection *relbss;
3281 asection *dynsbss;
3282 asection *relsbss;
3283 elf_linker_section_t sdata[2];
3284 asection *sbss;
3285 asection *glink_eh_frame;
3286
3287 /* The (unloaded but important) .rela.plt.unloaded on VxWorks. */
3288 asection *srelplt2;
3289
3290 /* The .got.plt section (VxWorks only)*/
3291 asection *sgotplt;
3292
3293 /* Shortcut to __tls_get_addr. */
3294 struct elf_link_hash_entry *tls_get_addr;
3295
3296 /* The bfd that forced an old-style PLT. */
3297 bfd *old_bfd;
3298
3299 /* TLS local dynamic got entry handling. */
3300 union {
3301 bfd_signed_vma refcount;
3302 bfd_vma offset;
3303 } tlsld_got;
3304
3305 /* Offset of branch table to PltResolve function in glink. */
3306 bfd_vma glink_pltresolve;
3307
3308 /* Size of reserved GOT entries. */
3309 unsigned int got_header_size;
3310 /* Non-zero if allocating the header left a gap. */
3311 unsigned int got_gap;
3312
3313 /* The type of PLT we have chosen to use. */
3314 enum ppc_elf_plt_type plt_type;
3315
3316 /* True if the target system is VxWorks. */
3317 unsigned int is_vxworks:1;
3318
3319 /* The size of PLT entries. */
3320 int plt_entry_size;
3321 /* The distance between adjacent PLT slots. */
3322 int plt_slot_size;
3323 /* The size of the first PLT entry. */
3324 int plt_initial_entry_size;
3325
3326 /* Small local sym cache. */
3327 struct sym_cache sym_cache;
3328 };
3329
3330 /* Rename some of the generic section flags to better document how they
3331 are used for ppc32. The flags are only valid for ppc32 elf objects. */
3332
3333 /* Nonzero if this section has TLS related relocations. */
3334 #define has_tls_reloc sec_flg0
3335
3336 /* Nonzero if this section has a call to __tls_get_addr. */
3337 #define has_tls_get_addr_call sec_flg1
3338
3339 /* Get the PPC ELF linker hash table from a link_info structure. */
3340
3341 #define ppc_elf_hash_table(p) \
3342 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
3343 == PPC32_ELF_DATA ? ((struct ppc_elf_link_hash_table *) ((p)->hash)) : NULL)
3344
3345 /* Create an entry in a PPC ELF linker hash table. */
3346
3347 static struct bfd_hash_entry *
3348 ppc_elf_link_hash_newfunc (struct bfd_hash_entry *entry,
3349 struct bfd_hash_table *table,
3350 const char *string)
3351 {
3352 /* Allocate the structure if it has not already been allocated by a
3353 subclass. */
3354 if (entry == NULL)
3355 {
3356 entry = bfd_hash_allocate (table,
3357 sizeof (struct ppc_elf_link_hash_entry));
3358 if (entry == NULL)
3359 return entry;
3360 }
3361
3362 /* Call the allocation method of the superclass. */
3363 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
3364 if (entry != NULL)
3365 {
3366 ppc_elf_hash_entry (entry)->linker_section_pointer = NULL;
3367 ppc_elf_hash_entry (entry)->dyn_relocs = NULL;
3368 ppc_elf_hash_entry (entry)->tls_mask = 0;
3369 ppc_elf_hash_entry (entry)->has_sda_refs = 0;
3370 }
3371
3372 return entry;
3373 }
3374
3375 /* Create a PPC ELF linker hash table. */
3376
3377 static struct bfd_link_hash_table *
3378 ppc_elf_link_hash_table_create (bfd *abfd)
3379 {
3380 struct ppc_elf_link_hash_table *ret;
3381 static struct ppc_elf_params default_params
3382 = { PLT_OLD, 0, 1, 0, 0, 12, 0, 0 };
3383
3384 ret = bfd_zmalloc (sizeof (struct ppc_elf_link_hash_table));
3385 if (ret == NULL)
3386 return NULL;
3387
3388 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd,
3389 ppc_elf_link_hash_newfunc,
3390 sizeof (struct ppc_elf_link_hash_entry),
3391 PPC32_ELF_DATA))
3392 {
3393 free (ret);
3394 return NULL;
3395 }
3396
3397 ret->elf.init_plt_refcount.refcount = 0;
3398 ret->elf.init_plt_refcount.glist = NULL;
3399 ret->elf.init_plt_offset.offset = 0;
3400 ret->elf.init_plt_offset.glist = NULL;
3401
3402 ret->params = &default_params;
3403
3404 ret->sdata[0].name = ".sdata";
3405 ret->sdata[0].sym_name = "_SDA_BASE_";
3406 ret->sdata[0].bss_name = ".sbss";
3407
3408 ret->sdata[1].name = ".sdata2";
3409 ret->sdata[1].sym_name = "_SDA2_BASE_";
3410 ret->sdata[1].bss_name = ".sbss2";
3411
3412 ret->plt_entry_size = 12;
3413 ret->plt_slot_size = 8;
3414 ret->plt_initial_entry_size = 72;
3415
3416 return &ret->elf.root;
3417 }
3418
3419 /* Hook linker params into hash table. */
3420
3421 void
3422 ppc_elf_link_params (struct bfd_link_info *info, struct ppc_elf_params *params)
3423 {
3424 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
3425
3426 if (htab)
3427 htab->params = params;
3428 params->pagesize_p2 = bfd_log2 (params->pagesize);
3429 }
3430
3431 /* Create .got and the related sections. */
3432
3433 static bfd_boolean
3434 ppc_elf_create_got (bfd *abfd, struct bfd_link_info *info)
3435 {
3436 struct ppc_elf_link_hash_table *htab;
3437 asection *s;
3438 flagword flags;
3439
3440 if (!_bfd_elf_create_got_section (abfd, info))
3441 return FALSE;
3442
3443 htab = ppc_elf_hash_table (info);
3444 htab->got = s = bfd_get_linker_section (abfd, ".got");
3445 if (s == NULL)
3446 abort ();
3447
3448 if (htab->is_vxworks)
3449 {
3450 htab->sgotplt = bfd_get_linker_section (abfd, ".got.plt");
3451 if (!htab->sgotplt)
3452 abort ();
3453 }
3454 else
3455 {
3456 /* The powerpc .got has a blrl instruction in it. Mark it
3457 executable. */
3458 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS
3459 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3460 if (!bfd_set_section_flags (abfd, s, flags))
3461 return FALSE;
3462 }
3463
3464 htab->relgot = bfd_get_linker_section (abfd, ".rela.got");
3465 if (!htab->relgot)
3466 abort ();
3467
3468 return TRUE;
3469 }
3470
3471 /* Create a special linker section, used for R_PPC_EMB_SDAI16 and
3472 R_PPC_EMB_SDA2I16 pointers. These sections become part of .sdata
3473 and .sdata2. Create _SDA_BASE_ and _SDA2_BASE too. */
3474
3475 static bfd_boolean
3476 ppc_elf_create_linker_section (bfd *abfd,
3477 struct bfd_link_info *info,
3478 flagword flags,
3479 elf_linker_section_t *lsect)
3480 {
3481 asection *s;
3482
3483 flags |= (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
3484 | SEC_LINKER_CREATED);
3485
3486 s = bfd_make_section_anyway_with_flags (abfd, lsect->name, flags);
3487 if (s == NULL)
3488 return FALSE;
3489 lsect->section = s;
3490
3491 /* Define the sym on the first section of this name. */
3492 s = bfd_get_section_by_name (abfd, lsect->name);
3493
3494 lsect->sym = _bfd_elf_define_linkage_sym (abfd, info, s, lsect->sym_name);
3495 if (lsect->sym == NULL)
3496 return FALSE;
3497 lsect->sym->root.u.def.value = 0x8000;
3498 return TRUE;
3499 }
3500
3501 static bfd_boolean
3502 ppc_elf_create_glink (bfd *abfd, struct bfd_link_info *info)
3503 {
3504 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
3505 asection *s;
3506 flagword flags;
3507
3508 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY | SEC_HAS_CONTENTS
3509 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3510 s = bfd_make_section_anyway_with_flags (abfd, ".glink", flags);
3511 htab->glink = s;
3512 if (s == NULL
3513 || !bfd_set_section_alignment (abfd, s,
3514 htab->params->ppc476_workaround ? 6 : 4))
3515 return FALSE;
3516
3517 if (!info->no_ld_generated_unwind_info)
3518 {
3519 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
3520 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3521 s = bfd_make_section_anyway_with_flags (abfd, ".eh_frame", flags);
3522 htab->glink_eh_frame = s;
3523 if (s == NULL
3524 || !bfd_set_section_alignment (abfd, s, 2))
3525 return FALSE;
3526 }
3527
3528 flags = SEC_ALLOC | SEC_LINKER_CREATED;
3529 s = bfd_make_section_anyway_with_flags (abfd, ".iplt", flags);
3530 htab->iplt = s;
3531 if (s == NULL
3532 || !bfd_set_section_alignment (abfd, s, 4))
3533 return FALSE;
3534
3535 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
3536 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3537 s = bfd_make_section_anyway_with_flags (abfd, ".rela.iplt", flags);
3538 htab->reliplt = s;
3539 if (s == NULL
3540 || ! bfd_set_section_alignment (abfd, s, 2))
3541 return FALSE;
3542
3543 if (!ppc_elf_create_linker_section (abfd, info, 0,
3544 &htab->sdata[0]))
3545 return FALSE;
3546
3547 if (!ppc_elf_create_linker_section (abfd, info, SEC_READONLY,
3548 &htab->sdata[1]))
3549 return FALSE;
3550
3551 return TRUE;
3552 }
3553
3554 /* We have to create .dynsbss and .rela.sbss here so that they get mapped
3555 to output sections (just like _bfd_elf_create_dynamic_sections has
3556 to create .dynbss and .rela.bss). */
3557
3558 static bfd_boolean
3559 ppc_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
3560 {
3561 struct ppc_elf_link_hash_table *htab;
3562 asection *s;
3563 flagword flags;
3564
3565 htab = ppc_elf_hash_table (info);
3566
3567 if (htab->got == NULL
3568 && !ppc_elf_create_got (abfd, info))
3569 return FALSE;
3570
3571 if (!_bfd_elf_create_dynamic_sections (abfd, info))
3572 return FALSE;
3573
3574 if (htab->glink == NULL
3575 && !ppc_elf_create_glink (abfd, info))
3576 return FALSE;
3577
3578 htab->dynbss = bfd_get_linker_section (abfd, ".dynbss");
3579 s = bfd_make_section_anyway_with_flags (abfd, ".dynsbss",
3580 SEC_ALLOC | SEC_LINKER_CREATED);
3581 htab->dynsbss = s;
3582 if (s == NULL)
3583 return FALSE;
3584
3585 if (! bfd_link_pic (info))
3586 {
3587 htab->relbss = bfd_get_linker_section (abfd, ".rela.bss");
3588 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
3589 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3590 s = bfd_make_section_anyway_with_flags (abfd, ".rela.sbss", flags);
3591 htab->relsbss = s;
3592 if (s == NULL
3593 || ! bfd_set_section_alignment (abfd, s, 2))
3594 return FALSE;
3595 }
3596
3597 if (htab->is_vxworks
3598 && !elf_vxworks_create_dynamic_sections (abfd, info, &htab->srelplt2))
3599 return FALSE;
3600
3601 htab->relplt = bfd_get_linker_section (abfd, ".rela.plt");
3602 htab->plt = s = bfd_get_linker_section (abfd, ".plt");
3603 if (s == NULL)
3604 abort ();
3605
3606 flags = SEC_ALLOC | SEC_CODE | SEC_LINKER_CREATED;
3607 if (htab->plt_type == PLT_VXWORKS)
3608 /* The VxWorks PLT is a loaded section with contents. */
3609 flags |= SEC_HAS_CONTENTS | SEC_LOAD | SEC_READONLY;
3610 return bfd_set_section_flags (abfd, s, flags);
3611 }
3612
3613 /* Copy the extra info we tack onto an elf_link_hash_entry. */
3614
3615 static void
3616 ppc_elf_copy_indirect_symbol (struct bfd_link_info *info,
3617 struct elf_link_hash_entry *dir,
3618 struct elf_link_hash_entry *ind)
3619 {
3620 struct ppc_elf_link_hash_entry *edir, *eind;
3621
3622 edir = (struct ppc_elf_link_hash_entry *) dir;
3623 eind = (struct ppc_elf_link_hash_entry *) ind;
3624
3625 edir->tls_mask |= eind->tls_mask;
3626 edir->has_sda_refs |= eind->has_sda_refs;
3627
3628 /* If called to transfer flags for a weakdef during processing
3629 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
3630 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
3631 if (!(ELIMINATE_COPY_RELOCS
3632 && eind->elf.root.type != bfd_link_hash_indirect
3633 && edir->elf.dynamic_adjusted))
3634 edir->elf.non_got_ref |= eind->elf.non_got_ref;
3635
3636 edir->elf.ref_dynamic |= eind->elf.ref_dynamic;
3637 edir->elf.ref_regular |= eind->elf.ref_regular;
3638 edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak;
3639 edir->elf.needs_plt |= eind->elf.needs_plt;
3640 edir->elf.pointer_equality_needed |= eind->elf.pointer_equality_needed;
3641
3642 if (eind->dyn_relocs != NULL)
3643 {
3644 if (edir->dyn_relocs != NULL)
3645 {
3646 struct elf_dyn_relocs **pp;
3647 struct elf_dyn_relocs *p;
3648
3649 /* Add reloc counts against the indirect sym to the direct sym
3650 list. Merge any entries against the same section. */
3651 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
3652 {
3653 struct elf_dyn_relocs *q;
3654
3655 for (q = edir->dyn_relocs; q != NULL; q = q->next)
3656 if (q->sec == p->sec)
3657 {
3658 q->pc_count += p->pc_count;
3659 q->count += p->count;
3660 *pp = p->next;
3661 break;
3662 }
3663 if (q == NULL)
3664 pp = &p->next;
3665 }
3666 *pp = edir->dyn_relocs;
3667 }
3668
3669 edir->dyn_relocs = eind->dyn_relocs;
3670 eind->dyn_relocs = NULL;
3671 }
3672
3673 /* If we were called to copy over info for a weak sym, that's all.
3674 You might think dyn_relocs need not be copied over; After all,
3675 both syms will be dynamic or both non-dynamic so we're just
3676 moving reloc accounting around. However, ELIMINATE_COPY_RELOCS
3677 code in ppc_elf_adjust_dynamic_symbol needs to check for
3678 dyn_relocs in read-only sections, and it does so on what is the
3679 DIR sym here. */
3680 if (eind->elf.root.type != bfd_link_hash_indirect)
3681 return;
3682
3683 /* Copy over the GOT refcount entries that we may have already seen to
3684 the symbol which just became indirect. */
3685 edir->elf.got.refcount += eind->elf.got.refcount;
3686 eind->elf.got.refcount = 0;
3687
3688 /* And plt entries. */
3689 if (eind->elf.plt.plist != NULL)
3690 {
3691 if (edir->elf.plt.plist != NULL)
3692 {
3693 struct plt_entry **entp;
3694 struct plt_entry *ent;
3695
3696 for (entp = &eind->elf.plt.plist; (ent = *entp) != NULL; )
3697 {
3698 struct plt_entry *dent;
3699
3700 for (dent = edir->elf.plt.plist; dent != NULL; dent = dent->next)
3701 if (dent->sec == ent->sec && dent->addend == ent->addend)
3702 {
3703 dent->plt.refcount += ent->plt.refcount;
3704 *entp = ent->next;
3705 break;
3706 }
3707 if (dent == NULL)
3708 entp = &ent->next;
3709 }
3710 *entp = edir->elf.plt.plist;
3711 }
3712
3713 edir->elf.plt.plist = eind->elf.plt.plist;
3714 eind->elf.plt.plist = NULL;
3715 }
3716
3717 if (eind->elf.dynindx != -1)
3718 {
3719 if (edir->elf.dynindx != -1)
3720 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
3721 edir->elf.dynstr_index);
3722 edir->elf.dynindx = eind->elf.dynindx;
3723 edir->elf.dynstr_index = eind->elf.dynstr_index;
3724 eind->elf.dynindx = -1;
3725 eind->elf.dynstr_index = 0;
3726 }
3727 }
3728
3729 /* Hook called by the linker routine which adds symbols from an object
3730 file. We use it to put .comm items in .sbss, and not .bss. */
3731
3732 static bfd_boolean
3733 ppc_elf_add_symbol_hook (bfd *abfd,
3734 struct bfd_link_info *info,
3735 Elf_Internal_Sym *sym,
3736 const char **namep ATTRIBUTE_UNUSED,
3737 flagword *flagsp ATTRIBUTE_UNUSED,
3738 asection **secp,
3739 bfd_vma *valp)
3740 {
3741 if (sym->st_shndx == SHN_COMMON
3742 && !bfd_link_relocatable (info)
3743 && is_ppc_elf (info->output_bfd)
3744 && sym->st_size <= elf_gp_size (abfd))
3745 {
3746 /* Common symbols less than or equal to -G nn bytes are automatically
3747 put into .sbss. */
3748 struct ppc_elf_link_hash_table *htab;
3749
3750 htab = ppc_elf_hash_table (info);
3751 if (htab->sbss == NULL)
3752 {
3753 flagword flags = SEC_IS_COMMON | SEC_LINKER_CREATED;
3754
3755 if (!htab->elf.dynobj)
3756 htab->elf.dynobj = abfd;
3757
3758 htab->sbss = bfd_make_section_anyway_with_flags (htab->elf.dynobj,
3759 ".sbss",
3760 flags);
3761 if (htab->sbss == NULL)
3762 return FALSE;
3763 }
3764
3765 *secp = htab->sbss;
3766 *valp = sym->st_size;
3767 }
3768
3769 if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC
3770 && (abfd->flags & DYNAMIC) == 0
3771 && bfd_get_flavour (info->output_bfd) == bfd_target_elf_flavour)
3772 elf_tdata (info->output_bfd)->has_gnu_symbols |= elf_gnu_symbol_ifunc;
3773
3774 return TRUE;
3775 }
3776 \f
3777 /* Find a linker generated pointer with a given addend and type. */
3778
3779 static elf_linker_section_pointers_t *
3780 elf_find_pointer_linker_section
3781 (elf_linker_section_pointers_t *linker_pointers,
3782 bfd_vma addend,
3783 elf_linker_section_t *lsect)
3784 {
3785 for ( ; linker_pointers != NULL; linker_pointers = linker_pointers->next)
3786 if (lsect == linker_pointers->lsect && addend == linker_pointers->addend)
3787 return linker_pointers;
3788
3789 return NULL;
3790 }
3791
3792 /* Allocate a pointer to live in a linker created section. */
3793
3794 static bfd_boolean
3795 elf_allocate_pointer_linker_section (bfd *abfd,
3796 elf_linker_section_t *lsect,
3797 struct elf_link_hash_entry *h,
3798 const Elf_Internal_Rela *rel)
3799 {
3800 elf_linker_section_pointers_t **ptr_linker_section_ptr = NULL;
3801 elf_linker_section_pointers_t *linker_section_ptr;
3802 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
3803 bfd_size_type amt;
3804
3805 BFD_ASSERT (lsect != NULL);
3806
3807 /* Is this a global symbol? */
3808 if (h != NULL)
3809 {
3810 struct ppc_elf_link_hash_entry *eh;
3811
3812 /* Has this symbol already been allocated? If so, our work is done. */
3813 eh = (struct ppc_elf_link_hash_entry *) h;
3814 if (elf_find_pointer_linker_section (eh->linker_section_pointer,
3815 rel->r_addend,
3816 lsect))
3817 return TRUE;
3818
3819 ptr_linker_section_ptr = &eh->linker_section_pointer;
3820 }
3821 else
3822 {
3823 BFD_ASSERT (is_ppc_elf (abfd));
3824
3825 /* Allocation of a pointer to a local symbol. */
3826 elf_linker_section_pointers_t **ptr = elf_local_ptr_offsets (abfd);
3827
3828 /* Allocate a table to hold the local symbols if first time. */
3829 if (!ptr)
3830 {
3831 unsigned int num_symbols = elf_symtab_hdr (abfd).sh_info;
3832
3833 amt = num_symbols;
3834 amt *= sizeof (elf_linker_section_pointers_t *);
3835 ptr = bfd_zalloc (abfd, amt);
3836
3837 if (!ptr)
3838 return FALSE;
3839
3840 elf_local_ptr_offsets (abfd) = ptr;
3841 }
3842
3843 /* Has this symbol already been allocated? If so, our work is done. */
3844 if (elf_find_pointer_linker_section (ptr[r_symndx],
3845 rel->r_addend,
3846 lsect))
3847 return TRUE;
3848
3849 ptr_linker_section_ptr = &ptr[r_symndx];
3850 }
3851
3852 /* Allocate space for a pointer in the linker section, and allocate
3853 a new pointer record from internal memory. */
3854 BFD_ASSERT (ptr_linker_section_ptr != NULL);
3855 amt = sizeof (elf_linker_section_pointers_t);
3856 linker_section_ptr = bfd_alloc (abfd, amt);
3857
3858 if (!linker_section_ptr)
3859 return FALSE;
3860
3861 linker_section_ptr->next = *ptr_linker_section_ptr;
3862 linker_section_ptr->addend = rel->r_addend;
3863 linker_section_ptr->lsect = lsect;
3864 *ptr_linker_section_ptr = linker_section_ptr;
3865
3866 if (!bfd_set_section_alignment (lsect->section->owner, lsect->section, 2))
3867 return FALSE;
3868 linker_section_ptr->offset = lsect->section->size;
3869 lsect->section->size += 4;
3870
3871 #ifdef DEBUG
3872 fprintf (stderr,
3873 "Create pointer in linker section %s, offset = %ld, section size = %ld\n",
3874 lsect->name, (long) linker_section_ptr->offset,
3875 (long) lsect->section->size);
3876 #endif
3877
3878 return TRUE;
3879 }
3880
3881 static struct plt_entry **
3882 update_local_sym_info (bfd *abfd,
3883 Elf_Internal_Shdr *symtab_hdr,
3884 unsigned long r_symndx,
3885 int tls_type)
3886 {
3887 bfd_signed_vma *local_got_refcounts = elf_local_got_refcounts (abfd);
3888 struct plt_entry **local_plt;
3889 char *local_got_tls_masks;
3890
3891 if (local_got_refcounts == NULL)
3892 {
3893 bfd_size_type size = symtab_hdr->sh_info;
3894
3895 size *= (sizeof (*local_got_refcounts)
3896 + sizeof (*local_plt)
3897 + sizeof (*local_got_tls_masks));
3898 local_got_refcounts = bfd_zalloc (abfd, size);
3899 if (local_got_refcounts == NULL)
3900 return NULL;
3901 elf_local_got_refcounts (abfd) = local_got_refcounts;
3902 }
3903
3904 local_plt = (struct plt_entry **) (local_got_refcounts + symtab_hdr->sh_info);
3905 local_got_tls_masks = (char *) (local_plt + symtab_hdr->sh_info);
3906 local_got_tls_masks[r_symndx] |= tls_type;
3907 if (tls_type != PLT_IFUNC)
3908 local_got_refcounts[r_symndx] += 1;
3909 return local_plt + r_symndx;
3910 }
3911
3912 static bfd_boolean
3913 update_plt_info (bfd *abfd, struct plt_entry **plist,
3914 asection *sec, bfd_vma addend)
3915 {
3916 struct plt_entry *ent;
3917
3918 if (addend < 32768)
3919 sec = NULL;
3920 for (ent = *plist; ent != NULL; ent = ent->next)
3921 if (ent->sec == sec && ent->addend == addend)
3922 break;
3923 if (ent == NULL)
3924 {
3925 bfd_size_type amt = sizeof (*ent);
3926 ent = bfd_alloc (abfd, amt);
3927 if (ent == NULL)
3928 return FALSE;
3929 ent->next = *plist;
3930 ent->sec = sec;
3931 ent->addend = addend;
3932 ent->plt.refcount = 0;
3933 *plist = ent;
3934 }
3935 ent->plt.refcount += 1;
3936 return TRUE;
3937 }
3938
3939 static struct plt_entry *
3940 find_plt_ent (struct plt_entry **plist, asection *sec, bfd_vma addend)
3941 {
3942 struct plt_entry *ent;
3943
3944 if (addend < 32768)
3945 sec = NULL;
3946 for (ent = *plist; ent != NULL; ent = ent->next)
3947 if (ent->sec == sec && ent->addend == addend)
3948 break;
3949 return ent;
3950 }
3951
3952 static bfd_boolean
3953 is_branch_reloc (enum elf_ppc_reloc_type r_type)
3954 {
3955 return (r_type == R_PPC_PLTREL24
3956 || r_type == R_PPC_LOCAL24PC
3957 || r_type == R_PPC_REL24
3958 || r_type == R_PPC_REL14
3959 || r_type == R_PPC_REL14_BRTAKEN
3960 || r_type == R_PPC_REL14_BRNTAKEN
3961 || r_type == R_PPC_ADDR24
3962 || r_type == R_PPC_ADDR14
3963 || r_type == R_PPC_ADDR14_BRTAKEN
3964 || r_type == R_PPC_ADDR14_BRNTAKEN
3965 || r_type == R_PPC_VLE_REL24);
3966 }
3967
3968 static void
3969 bad_shared_reloc (bfd *abfd, enum elf_ppc_reloc_type r_type)
3970 {
3971 _bfd_error_handler
3972 (_("%B: relocation %s cannot be used when making a shared object"),
3973 abfd,
3974 ppc_elf_howto_table[r_type]->name);
3975 bfd_set_error (bfd_error_bad_value);
3976 }
3977
3978 /* Look through the relocs for a section during the first phase, and
3979 allocate space in the global offset table or procedure linkage
3980 table. */
3981
3982 static bfd_boolean
3983 ppc_elf_check_relocs (bfd *abfd,
3984 struct bfd_link_info *info,
3985 asection *sec,
3986 const Elf_Internal_Rela *relocs)
3987 {
3988 struct ppc_elf_link_hash_table *htab;
3989 Elf_Internal_Shdr *symtab_hdr;
3990 struct elf_link_hash_entry **sym_hashes;
3991 const Elf_Internal_Rela *rel;
3992 const Elf_Internal_Rela *rel_end;
3993 asection *got2, *sreloc;
3994 struct elf_link_hash_entry *tga;
3995
3996 if (bfd_link_relocatable (info))
3997 return TRUE;
3998
3999 /* Don't do anything special with non-loaded, non-alloced sections.
4000 In particular, any relocs in such sections should not affect GOT
4001 and PLT reference counting (ie. we don't allow them to create GOT
4002 or PLT entries), there's no possibility or desire to optimize TLS
4003 relocs, and there's not much point in propagating relocs to shared
4004 libs that the dynamic linker won't relocate. */
4005 if ((sec->flags & SEC_ALLOC) == 0)
4006 return TRUE;
4007
4008 #ifdef DEBUG
4009 _bfd_error_handler ("ppc_elf_check_relocs called for section %A in %B",
4010 sec, abfd);
4011 #endif
4012
4013 BFD_ASSERT (is_ppc_elf (abfd));
4014
4015 /* Initialize howto table if not already done. */
4016 if (!ppc_elf_howto_table[R_PPC_ADDR32])
4017 ppc_elf_howto_init ();
4018
4019 htab = ppc_elf_hash_table (info);
4020 if (htab->glink == NULL)
4021 {
4022 if (htab->elf.dynobj == NULL)
4023 htab->elf.dynobj = abfd;
4024 if (!ppc_elf_create_glink (htab->elf.dynobj, info))
4025 return FALSE;
4026 }
4027 tga = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
4028 FALSE, FALSE, TRUE);
4029 symtab_hdr = &elf_symtab_hdr (abfd);
4030 sym_hashes = elf_sym_hashes (abfd);
4031 got2 = bfd_get_section_by_name (abfd, ".got2");
4032 sreloc = NULL;
4033
4034 rel_end = relocs + sec->reloc_count;
4035 for (rel = relocs; rel < rel_end; rel++)
4036 {
4037 unsigned long r_symndx;
4038 enum elf_ppc_reloc_type r_type;
4039 struct elf_link_hash_entry *h;
4040 int tls_type;
4041 struct plt_entry **ifunc;
4042
4043 r_symndx = ELF32_R_SYM (rel->r_info);
4044 if (r_symndx < symtab_hdr->sh_info)
4045 h = NULL;
4046 else
4047 {
4048 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4049 while (h->root.type == bfd_link_hash_indirect
4050 || h->root.type == bfd_link_hash_warning)
4051 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4052
4053 /* PR15323, ref flags aren't set for references in the same
4054 object. */
4055 h->root.non_ir_ref = 1;
4056 }
4057
4058 /* If a relocation refers to _GLOBAL_OFFSET_TABLE_, create the .got.
4059 This shows up in particular in an R_PPC_ADDR32 in the eabi
4060 startup code. */
4061 if (h != NULL
4062 && htab->got == NULL
4063 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
4064 {
4065 if (htab->elf.dynobj == NULL)
4066 htab->elf.dynobj = abfd;
4067 if (!ppc_elf_create_got (htab->elf.dynobj, info))
4068 return FALSE;
4069 BFD_ASSERT (h == htab->elf.hgot);
4070 }
4071
4072 tls_type = 0;
4073 r_type = ELF32_R_TYPE (rel->r_info);
4074 ifunc = NULL;
4075 if (h == NULL && !htab->is_vxworks)
4076 {
4077 Elf_Internal_Sym *isym = bfd_sym_from_r_symndx (&htab->sym_cache,
4078 abfd, r_symndx);
4079 if (isym == NULL)
4080 return FALSE;
4081
4082 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
4083 {
4084 /* Set PLT_IFUNC flag for this sym, no GOT entry yet. */
4085 ifunc = update_local_sym_info (abfd, symtab_hdr, r_symndx,
4086 PLT_IFUNC);
4087 if (ifunc == NULL)
4088 return FALSE;
4089
4090 /* STT_GNU_IFUNC symbols must have a PLT entry;
4091 In a non-pie executable even when there are
4092 no plt calls. */
4093 if (!bfd_link_pic (info)
4094 || is_branch_reloc (r_type))
4095 {
4096 bfd_vma addend = 0;
4097 if (r_type == R_PPC_PLTREL24)
4098 {
4099 ppc_elf_tdata (abfd)->makes_plt_call = 1;
4100 if (bfd_link_pic (info))
4101 addend = rel->r_addend;
4102 }
4103 if (!update_plt_info (abfd, ifunc, got2, addend))
4104 return FALSE;
4105 }
4106 }
4107 }
4108
4109 if (!htab->is_vxworks
4110 && is_branch_reloc (r_type)
4111 && h != NULL
4112 && h == tga)
4113 {
4114 if (rel != relocs
4115 && (ELF32_R_TYPE (rel[-1].r_info) == R_PPC_TLSGD
4116 || ELF32_R_TYPE (rel[-1].r_info) == R_PPC_TLSLD))
4117 /* We have a new-style __tls_get_addr call with a marker
4118 reloc. */
4119 ;
4120 else
4121 /* Mark this section as having an old-style call. */
4122 sec->has_tls_get_addr_call = 1;
4123 }
4124
4125 switch (r_type)
4126 {
4127 case R_PPC_TLSGD:
4128 case R_PPC_TLSLD:
4129 /* These special tls relocs tie a call to __tls_get_addr with
4130 its parameter symbol. */
4131 break;
4132
4133 case R_PPC_GOT_TLSLD16:
4134 case R_PPC_GOT_TLSLD16_LO:
4135 case R_PPC_GOT_TLSLD16_HI:
4136 case R_PPC_GOT_TLSLD16_HA:
4137 tls_type = TLS_TLS | TLS_LD;
4138 goto dogottls;
4139
4140 case R_PPC_GOT_TLSGD16:
4141 case R_PPC_GOT_TLSGD16_LO:
4142 case R_PPC_GOT_TLSGD16_HI:
4143 case R_PPC_GOT_TLSGD16_HA:
4144 tls_type = TLS_TLS | TLS_GD;
4145 goto dogottls;
4146
4147 case R_PPC_GOT_TPREL16:
4148 case R_PPC_GOT_TPREL16_LO:
4149 case R_PPC_GOT_TPREL16_HI:
4150 case R_PPC_GOT_TPREL16_HA:
4151 if (bfd_link_pic (info))
4152 info->flags |= DF_STATIC_TLS;
4153 tls_type = TLS_TLS | TLS_TPREL;
4154 goto dogottls;
4155
4156 case R_PPC_GOT_DTPREL16:
4157 case R_PPC_GOT_DTPREL16_LO:
4158 case R_PPC_GOT_DTPREL16_HI:
4159 case R_PPC_GOT_DTPREL16_HA:
4160 tls_type = TLS_TLS | TLS_DTPREL;
4161 dogottls:
4162 sec->has_tls_reloc = 1;
4163 /* Fall thru */
4164
4165 /* GOT16 relocations */
4166 case R_PPC_GOT16:
4167 case R_PPC_GOT16_LO:
4168 case R_PPC_GOT16_HI:
4169 case R_PPC_GOT16_HA:
4170 /* This symbol requires a global offset table entry. */
4171 if (htab->got == NULL)
4172 {
4173 if (htab->elf.dynobj == NULL)
4174 htab->elf.dynobj = abfd;
4175 if (!ppc_elf_create_got (htab->elf.dynobj, info))
4176 return FALSE;
4177 }
4178 if (h != NULL)
4179 {
4180 h->got.refcount += 1;
4181 ppc_elf_hash_entry (h)->tls_mask |= tls_type;
4182 }
4183 else
4184 /* This is a global offset table entry for a local symbol. */
4185 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, tls_type))
4186 return FALSE;
4187
4188 /* We may also need a plt entry if the symbol turns out to be
4189 an ifunc. */
4190 if (h != NULL && !bfd_link_pic (info))
4191 {
4192 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
4193 return FALSE;
4194 }
4195 break;
4196
4197 /* Indirect .sdata relocation. */
4198 case R_PPC_EMB_SDAI16:
4199 if (bfd_link_pic (info))
4200 {
4201 bad_shared_reloc (abfd, r_type);
4202 return FALSE;
4203 }
4204 htab->sdata[0].sym->ref_regular = 1;
4205 if (!elf_allocate_pointer_linker_section (abfd, &htab->sdata[0],
4206 h, rel))
4207 return FALSE;
4208 if (h != NULL)
4209 {
4210 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4211 h->non_got_ref = TRUE;
4212 }
4213 break;
4214
4215 /* Indirect .sdata2 relocation. */
4216 case R_PPC_EMB_SDA2I16:
4217 if (bfd_link_pic (info))
4218 {
4219 bad_shared_reloc (abfd, r_type);
4220 return FALSE;
4221 }
4222 htab->sdata[1].sym->ref_regular = 1;
4223 if (!elf_allocate_pointer_linker_section (abfd, &htab->sdata[1],
4224 h, rel))
4225 return FALSE;
4226 if (h != NULL)
4227 {
4228 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4229 h->non_got_ref = TRUE;
4230 }
4231 break;
4232
4233 case R_PPC_SDAREL16:
4234 htab->sdata[0].sym->ref_regular = 1;
4235 /* Fall thru */
4236
4237 case R_PPC_VLE_SDAREL_LO16A:
4238 case R_PPC_VLE_SDAREL_LO16D:
4239 case R_PPC_VLE_SDAREL_HI16A:
4240 case R_PPC_VLE_SDAREL_HI16D:
4241 case R_PPC_VLE_SDAREL_HA16A:
4242 case R_PPC_VLE_SDAREL_HA16D:
4243 if (h != NULL)
4244 {
4245 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4246 h->non_got_ref = TRUE;
4247 }
4248 break;
4249
4250 case R_PPC_VLE_REL8:
4251 case R_PPC_VLE_REL15:
4252 case R_PPC_VLE_REL24:
4253 case R_PPC_VLE_LO16A:
4254 case R_PPC_VLE_LO16D:
4255 case R_PPC_VLE_HI16A:
4256 case R_PPC_VLE_HI16D:
4257 case R_PPC_VLE_HA16A:
4258 case R_PPC_VLE_HA16D:
4259 break;
4260
4261 case R_PPC_EMB_SDA2REL:
4262 if (bfd_link_pic (info))
4263 {
4264 bad_shared_reloc (abfd, r_type);
4265 return FALSE;
4266 }
4267 htab->sdata[1].sym->ref_regular = 1;
4268 if (h != NULL)
4269 {
4270 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4271 h->non_got_ref = TRUE;
4272 }
4273 break;
4274
4275 case R_PPC_VLE_SDA21_LO:
4276 case R_PPC_VLE_SDA21:
4277 case R_PPC_EMB_SDA21:
4278 case R_PPC_EMB_RELSDA:
4279 if (bfd_link_pic (info))
4280 {
4281 bad_shared_reloc (abfd, r_type);
4282 return FALSE;
4283 }
4284 if (h != NULL)
4285 {
4286 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4287 h->non_got_ref = TRUE;
4288 }
4289 break;
4290
4291 case R_PPC_EMB_NADDR32:
4292 case R_PPC_EMB_NADDR16:
4293 case R_PPC_EMB_NADDR16_LO:
4294 case R_PPC_EMB_NADDR16_HI:
4295 case R_PPC_EMB_NADDR16_HA:
4296 if (bfd_link_pic (info))
4297 {
4298 bad_shared_reloc (abfd, r_type);
4299 return FALSE;
4300 }
4301 if (h != NULL)
4302 h->non_got_ref = TRUE;
4303 break;
4304
4305 case R_PPC_PLTREL24:
4306 if (h == NULL)
4307 break;
4308 /* Fall through */
4309 case R_PPC_PLT32:
4310 case R_PPC_PLTREL32:
4311 case R_PPC_PLT16_LO:
4312 case R_PPC_PLT16_HI:
4313 case R_PPC_PLT16_HA:
4314 #ifdef DEBUG
4315 fprintf (stderr, "Reloc requires a PLT entry\n");
4316 #endif
4317 /* This symbol requires a procedure linkage table entry. */
4318 if (h == NULL)
4319 {
4320 if (ifunc == NULL)
4321 {
4322 /* It does not make sense to have a procedure linkage
4323 table entry for a non-ifunc local symbol. */
4324 info->callbacks->einfo
4325 (_("%P: %H: %s reloc against local symbol\n"),
4326 abfd, sec, rel->r_offset,
4327 ppc_elf_howto_table[r_type]->name);
4328 bfd_set_error (bfd_error_bad_value);
4329 return FALSE;
4330 }
4331 }
4332 else
4333 {
4334 bfd_vma addend = 0;
4335
4336 if (r_type == R_PPC_PLTREL24)
4337 {
4338 ppc_elf_tdata (abfd)->makes_plt_call = 1;
4339 if (bfd_link_pic (info))
4340 addend = rel->r_addend;
4341 }
4342 h->needs_plt = 1;
4343 if (!update_plt_info (abfd, &h->plt.plist, got2, addend))
4344 return FALSE;
4345 }
4346 break;
4347
4348 /* The following relocations don't need to propagate the
4349 relocation if linking a shared object since they are
4350 section relative. */
4351 case R_PPC_SECTOFF:
4352 case R_PPC_SECTOFF_LO:
4353 case R_PPC_SECTOFF_HI:
4354 case R_PPC_SECTOFF_HA:
4355 case R_PPC_DTPREL16:
4356 case R_PPC_DTPREL16_LO:
4357 case R_PPC_DTPREL16_HI:
4358 case R_PPC_DTPREL16_HA:
4359 case R_PPC_TOC16:
4360 break;
4361
4362 case R_PPC_REL16:
4363 case R_PPC_REL16_LO:
4364 case R_PPC_REL16_HI:
4365 case R_PPC_REL16_HA:
4366 case R_PPC_REL16DX_HA:
4367 ppc_elf_tdata (abfd)->has_rel16 = 1;
4368 break;
4369
4370 /* These are just markers. */
4371 case R_PPC_TLS:
4372 case R_PPC_EMB_MRKREF:
4373 case R_PPC_NONE:
4374 case R_PPC_max:
4375 case R_PPC_RELAX:
4376 case R_PPC_RELAX_PLT:
4377 case R_PPC_RELAX_PLTREL24:
4378 break;
4379
4380 /* These should only appear in dynamic objects. */
4381 case R_PPC_COPY:
4382 case R_PPC_GLOB_DAT:
4383 case R_PPC_JMP_SLOT:
4384 case R_PPC_RELATIVE:
4385 case R_PPC_IRELATIVE:
4386 break;
4387
4388 /* These aren't handled yet. We'll report an error later. */
4389 case R_PPC_ADDR30:
4390 case R_PPC_EMB_RELSEC16:
4391 case R_PPC_EMB_RELST_LO:
4392 case R_PPC_EMB_RELST_HI:
4393 case R_PPC_EMB_RELST_HA:
4394 case R_PPC_EMB_BIT_FLD:
4395 break;
4396
4397 /* This refers only to functions defined in the shared library. */
4398 case R_PPC_LOCAL24PC:
4399 if (h != NULL && h == htab->elf.hgot && htab->plt_type == PLT_UNSET)
4400 {
4401 htab->plt_type = PLT_OLD;
4402 htab->old_bfd = abfd;
4403 }
4404 if (h != NULL && h->type == STT_GNU_IFUNC)
4405 {
4406 h->needs_plt = 1;
4407 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
4408 return FALSE;
4409 }
4410 break;
4411
4412 /* This relocation describes the C++ object vtable hierarchy.
4413 Reconstruct it for later use during GC. */
4414 case R_PPC_GNU_VTINHERIT:
4415 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
4416 return FALSE;
4417 break;
4418
4419 /* This relocation describes which C++ vtable entries are actually
4420 used. Record for later use during GC. */
4421 case R_PPC_GNU_VTENTRY:
4422 BFD_ASSERT (h != NULL);
4423 if (h != NULL
4424 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
4425 return FALSE;
4426 break;
4427
4428 /* We shouldn't really be seeing these. */
4429 case R_PPC_TPREL32:
4430 case R_PPC_TPREL16:
4431 case R_PPC_TPREL16_LO:
4432 case R_PPC_TPREL16_HI:
4433 case R_PPC_TPREL16_HA:
4434 if (bfd_link_pic (info))
4435 info->flags |= DF_STATIC_TLS;
4436 goto dodyn;
4437
4438 /* Nor these. */
4439 case R_PPC_DTPMOD32:
4440 case R_PPC_DTPREL32:
4441 goto dodyn;
4442
4443 case R_PPC_REL32:
4444 if (h == NULL
4445 && got2 != NULL
4446 && (sec->flags & SEC_CODE) != 0
4447 && bfd_link_pic (info)
4448 && htab->plt_type == PLT_UNSET)
4449 {
4450 /* Old -fPIC gcc code has .long LCTOC1-LCFx just before
4451 the start of a function, which assembles to a REL32
4452 reference to .got2. If we detect one of these, then
4453 force the old PLT layout because the linker cannot
4454 reliably deduce the GOT pointer value needed for
4455 PLT call stubs. */
4456 asection *s;
4457 Elf_Internal_Sym *isym;
4458
4459 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
4460 abfd, r_symndx);
4461 if (isym == NULL)
4462 return FALSE;
4463
4464 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
4465 if (s == got2)
4466 {
4467 htab->plt_type = PLT_OLD;
4468 htab->old_bfd = abfd;
4469 }
4470 }
4471 if (h == NULL || h == htab->elf.hgot)
4472 break;
4473 /* fall through */
4474
4475 case R_PPC_ADDR32:
4476 case R_PPC_ADDR16:
4477 case R_PPC_ADDR16_LO:
4478 case R_PPC_ADDR16_HI:
4479 case R_PPC_ADDR16_HA:
4480 case R_PPC_UADDR32:
4481 case R_PPC_UADDR16:
4482 if (h != NULL && !bfd_link_pic (info))
4483 {
4484 /* We may need a plt entry if the symbol turns out to be
4485 a function defined in a dynamic object. */
4486 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
4487 return FALSE;
4488
4489 /* We may need a copy reloc too. */
4490 h->non_got_ref = 1;
4491 h->pointer_equality_needed = 1;
4492 if (r_type == R_PPC_ADDR16_HA)
4493 ppc_elf_hash_entry (h)->has_addr16_ha = 1;
4494 if (r_type == R_PPC_ADDR16_LO)
4495 ppc_elf_hash_entry (h)->has_addr16_lo = 1;
4496 }
4497 goto dodyn;
4498
4499 case R_PPC_REL24:
4500 case R_PPC_REL14:
4501 case R_PPC_REL14_BRTAKEN:
4502 case R_PPC_REL14_BRNTAKEN:
4503 if (h == NULL)
4504 break;
4505 if (h == htab->elf.hgot)
4506 {
4507 if (htab->plt_type == PLT_UNSET)
4508 {
4509 htab->plt_type = PLT_OLD;
4510 htab->old_bfd = abfd;
4511 }
4512 break;
4513 }
4514 /* fall through */
4515
4516 case R_PPC_ADDR24:
4517 case R_PPC_ADDR14:
4518 case R_PPC_ADDR14_BRTAKEN:
4519 case R_PPC_ADDR14_BRNTAKEN:
4520 if (h != NULL && !bfd_link_pic (info))
4521 {
4522 /* We may need a plt entry if the symbol turns out to be
4523 a function defined in a dynamic object. */
4524 h->needs_plt = 1;
4525 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
4526 return FALSE;
4527 break;
4528 }
4529
4530 dodyn:
4531 /* If we are creating a shared library, and this is a reloc
4532 against a global symbol, or a non PC relative reloc
4533 against a local symbol, then we need to copy the reloc
4534 into the shared library. However, if we are linking with
4535 -Bsymbolic, we do not need to copy a reloc against a
4536 global symbol which is defined in an object we are
4537 including in the link (i.e., DEF_REGULAR is set). At
4538 this point we have not seen all the input files, so it is
4539 possible that DEF_REGULAR is not set now but will be set
4540 later (it is never cleared). In case of a weak definition,
4541 DEF_REGULAR may be cleared later by a strong definition in
4542 a shared library. We account for that possibility below by
4543 storing information in the dyn_relocs field of the hash
4544 table entry. A similar situation occurs when creating
4545 shared libraries and symbol visibility changes render the
4546 symbol local.
4547
4548 If on the other hand, we are creating an executable, we
4549 may need to keep relocations for symbols satisfied by a
4550 dynamic library if we manage to avoid copy relocs for the
4551 symbol. */
4552 if ((bfd_link_pic (info)
4553 && (must_be_dyn_reloc (info, r_type)
4554 || (h != NULL
4555 && (!SYMBOLIC_BIND (info, h)
4556 || h->root.type == bfd_link_hash_defweak
4557 || !h->def_regular))))
4558 || (ELIMINATE_COPY_RELOCS
4559 && !bfd_link_pic (info)
4560 && h != NULL
4561 && (h->root.type == bfd_link_hash_defweak
4562 || !h->def_regular)))
4563 {
4564 #ifdef DEBUG
4565 fprintf (stderr,
4566 "ppc_elf_check_relocs needs to "
4567 "create relocation for %s\n",
4568 (h && h->root.root.string
4569 ? h->root.root.string : "<unknown>"));
4570 #endif
4571 if (sreloc == NULL)
4572 {
4573 if (htab->elf.dynobj == NULL)
4574 htab->elf.dynobj = abfd;
4575
4576 sreloc = _bfd_elf_make_dynamic_reloc_section
4577 (sec, htab->elf.dynobj, 2, abfd, /*rela?*/ TRUE);
4578
4579 if (sreloc == NULL)
4580 return FALSE;
4581 }
4582
4583 /* If this is a global symbol, we count the number of
4584 relocations we need for this symbol. */
4585 if (h != NULL)
4586 {
4587 struct elf_dyn_relocs *p;
4588 struct elf_dyn_relocs **rel_head;
4589
4590 rel_head = &ppc_elf_hash_entry (h)->dyn_relocs;
4591 p = *rel_head;
4592 if (p == NULL || p->sec != sec)
4593 {
4594 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
4595 if (p == NULL)
4596 return FALSE;
4597 p->next = *rel_head;
4598 *rel_head = p;
4599 p->sec = sec;
4600 p->count = 0;
4601 p->pc_count = 0;
4602 }
4603 p->count += 1;
4604 if (!must_be_dyn_reloc (info, r_type))
4605 p->pc_count += 1;
4606 }
4607 else
4608 {
4609 /* Track dynamic relocs needed for local syms too.
4610 We really need local syms available to do this
4611 easily. Oh well. */
4612 struct ppc_dyn_relocs *p;
4613 struct ppc_dyn_relocs **rel_head;
4614 bfd_boolean is_ifunc;
4615 asection *s;
4616 void *vpp;
4617 Elf_Internal_Sym *isym;
4618
4619 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
4620 abfd, r_symndx);
4621 if (isym == NULL)
4622 return FALSE;
4623
4624 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
4625 if (s == NULL)
4626 s = sec;
4627
4628 vpp = &elf_section_data (s)->local_dynrel;
4629 rel_head = (struct ppc_dyn_relocs **) vpp;
4630 is_ifunc = ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC;
4631 p = *rel_head;
4632 if (p != NULL && p->sec == sec && p->ifunc != is_ifunc)
4633 p = p->next;
4634 if (p == NULL || p->sec != sec || p->ifunc != is_ifunc)
4635 {
4636 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
4637 if (p == NULL)
4638 return FALSE;
4639 p->next = *rel_head;
4640 *rel_head = p;
4641 p->sec = sec;
4642 p->ifunc = is_ifunc;
4643 p->count = 0;
4644 }
4645 p->count += 1;
4646 }
4647 }
4648
4649 break;
4650 }
4651 }
4652
4653 return TRUE;
4654 }
4655 \f
4656 /* Warn for conflicting Tag_GNU_Power_ABI_FP attributes between IBFD
4657 and OBFD, and merge non-conflicting ones. */
4658 void
4659 _bfd_elf_ppc_merge_fp_attributes (bfd *ibfd, bfd *obfd)
4660 {
4661 obj_attribute *in_attr, *in_attrs;
4662 obj_attribute *out_attr, *out_attrs;
4663
4664 in_attrs = elf_known_obj_attributes (ibfd)[OBJ_ATTR_GNU];
4665 out_attrs = elf_known_obj_attributes (obfd)[OBJ_ATTR_GNU];
4666
4667 in_attr = &in_attrs[Tag_GNU_Power_ABI_FP];
4668 out_attr = &out_attrs[Tag_GNU_Power_ABI_FP];
4669
4670 if (in_attr->i != out_attr->i)
4671 {
4672 int in_fp = in_attr->i & 3;
4673 int out_fp = out_attr->i & 3;
4674
4675 if (in_fp == 0)
4676 ;
4677 else if (out_fp == 0)
4678 {
4679 out_attr->type = 1;
4680 out_attr->i ^= in_fp;
4681 }
4682 else if (out_fp != 2 && in_fp == 2)
4683 _bfd_error_handler
4684 (_("Warning: %B uses hard float, %B uses soft float"), obfd, ibfd);
4685 else if (out_fp == 2 && in_fp != 2)
4686 _bfd_error_handler
4687 (_("Warning: %B uses hard float, %B uses soft float"), ibfd, obfd);
4688 else if (out_fp == 1 && in_fp == 3)
4689 _bfd_error_handler
4690 (_("Warning: %B uses double-precision hard float, "
4691 "%B uses single-precision hard float"), obfd, ibfd);
4692 else if (out_fp == 3 && in_fp == 1)
4693 _bfd_error_handler
4694 (_("Warning: %B uses double-precision hard float, "
4695 "%B uses single-precision hard float"), ibfd, obfd);
4696
4697 in_fp = in_attr->i & 0xc;
4698 out_fp = out_attr->i & 0xc;
4699 if (in_fp == 0)
4700 ;
4701 else if (out_fp == 0)
4702 {
4703 out_attr->type = 1;
4704 out_attr->i ^= in_fp;
4705 }
4706 else if (out_fp != 2 * 4 && in_fp == 2 * 4)
4707 _bfd_error_handler
4708 (_("Warning: %B uses 64-bit long double, "
4709 "%B uses 128-bit long double"), ibfd, obfd);
4710 else if (in_fp != 2 * 4 && out_fp == 2 * 4)
4711 _bfd_error_handler
4712 (_("Warning: %B uses 64-bit long double, "
4713 "%B uses 128-bit long double"), obfd, ibfd);
4714 else if (out_fp == 1 * 4 && in_fp == 3 * 4)
4715 _bfd_error_handler
4716 (_("Warning: %B uses IBM long double, "
4717 "%B uses IEEE long double"), ibfd, obfd);
4718 else if (out_fp == 3 * 4 && in_fp == 1 * 4)
4719 _bfd_error_handler
4720 (_("Warning: %B uses IBM long double, "
4721 "%B uses IEEE long double"), obfd, ibfd);
4722 }
4723 }
4724
4725 /* Merge object attributes from IBFD into OBFD. Warn if
4726 there are conflicting attributes. */
4727 static bfd_boolean
4728 ppc_elf_merge_obj_attributes (bfd *ibfd, bfd *obfd)
4729 {
4730 obj_attribute *in_attr, *in_attrs;
4731 obj_attribute *out_attr, *out_attrs;
4732
4733 _bfd_elf_ppc_merge_fp_attributes (ibfd, obfd);
4734
4735 in_attrs = elf_known_obj_attributes (ibfd)[OBJ_ATTR_GNU];
4736 out_attrs = elf_known_obj_attributes (obfd)[OBJ_ATTR_GNU];
4737
4738 /* Check for conflicting Tag_GNU_Power_ABI_Vector attributes and
4739 merge non-conflicting ones. */
4740 in_attr = &in_attrs[Tag_GNU_Power_ABI_Vector];
4741 out_attr = &out_attrs[Tag_GNU_Power_ABI_Vector];
4742 if (in_attr->i != out_attr->i)
4743 {
4744 int in_vec = in_attr->i & 3;
4745 int out_vec = out_attr->i & 3;
4746
4747 if (in_vec == 0)
4748 ;
4749 else if (out_vec == 0)
4750 {
4751 out_attr->type = 1;
4752 out_attr->i = in_vec;
4753 }
4754 /* For now, allow generic to transition to AltiVec or SPE
4755 without a warning. If GCC marked files with their stack
4756 alignment and used don't-care markings for files which are
4757 not affected by the vector ABI, we could warn about this
4758 case too. */
4759 else if (in_vec == 1)
4760 ;
4761 else if (out_vec == 1)
4762 {
4763 out_attr->type = 1;
4764 out_attr->i = in_vec;
4765 }
4766 else if (out_vec < in_vec)
4767 _bfd_error_handler
4768 (_("Warning: %B uses AltiVec vector ABI, %B uses SPE vector ABI"),
4769 obfd, ibfd);
4770 else if (out_vec > in_vec)
4771 _bfd_error_handler
4772 (_("Warning: %B uses AltiVec vector ABI, %B uses SPE vector ABI"),
4773 ibfd, obfd);
4774 }
4775
4776 /* Check for conflicting Tag_GNU_Power_ABI_Struct_Return attributes
4777 and merge non-conflicting ones. */
4778 in_attr = &in_attrs[Tag_GNU_Power_ABI_Struct_Return];
4779 out_attr = &out_attrs[Tag_GNU_Power_ABI_Struct_Return];
4780 if (in_attr->i != out_attr->i)
4781 {
4782 int in_struct = in_attr->i & 3;
4783 int out_struct = out_attr->i & 3;
4784
4785 if (in_struct == 0 || in_struct == 3)
4786 ;
4787 else if (out_struct == 0)
4788 {
4789 out_attr->type = 1;
4790 out_attr->i = in_struct;
4791 }
4792 else if (out_struct < in_struct)
4793 _bfd_error_handler
4794 (_("Warning: %B uses r3/r4 for small structure returns, "
4795 "%B uses memory"), obfd, ibfd);
4796 else if (out_struct > in_struct)
4797 _bfd_error_handler
4798 (_("Warning: %B uses r3/r4 for small structure returns, "
4799 "%B uses memory"), ibfd, obfd);
4800 }
4801
4802 /* Merge Tag_compatibility attributes and any common GNU ones. */
4803 _bfd_elf_merge_object_attributes (ibfd, obfd);
4804
4805 return TRUE;
4806 }
4807
4808 /* Merge backend specific data from an object file to the output
4809 object file when linking. */
4810
4811 static bfd_boolean
4812 ppc_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
4813 {
4814 flagword old_flags;
4815 flagword new_flags;
4816 bfd_boolean error;
4817
4818 if (!is_ppc_elf (ibfd) || !is_ppc_elf (obfd))
4819 return TRUE;
4820
4821 /* Check if we have the same endianness. */
4822 if (! _bfd_generic_verify_endian_match (ibfd, obfd))
4823 return FALSE;
4824
4825 if (!ppc_elf_merge_obj_attributes (ibfd, obfd))
4826 return FALSE;
4827
4828 new_flags = elf_elfheader (ibfd)->e_flags;
4829 old_flags = elf_elfheader (obfd)->e_flags;
4830 if (!elf_flags_init (obfd))
4831 {
4832 /* First call, no flags set. */
4833 elf_flags_init (obfd) = TRUE;
4834 elf_elfheader (obfd)->e_flags = new_flags;
4835 }
4836
4837 /* Compatible flags are ok. */
4838 else if (new_flags == old_flags)
4839 ;
4840
4841 /* Incompatible flags. */
4842 else
4843 {
4844 /* Warn about -mrelocatable mismatch. Allow -mrelocatable-lib
4845 to be linked with either. */
4846 error = FALSE;
4847 if ((new_flags & EF_PPC_RELOCATABLE) != 0
4848 && (old_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0)
4849 {
4850 error = TRUE;
4851 _bfd_error_handler
4852 (_("%B: compiled with -mrelocatable and linked with "
4853 "modules compiled normally"), ibfd);
4854 }
4855 else if ((new_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0
4856 && (old_flags & EF_PPC_RELOCATABLE) != 0)
4857 {
4858 error = TRUE;
4859 _bfd_error_handler
4860 (_("%B: compiled normally and linked with "
4861 "modules compiled with -mrelocatable"), ibfd);
4862 }
4863
4864 /* The output is -mrelocatable-lib iff both the input files are. */
4865 if (! (new_flags & EF_PPC_RELOCATABLE_LIB))
4866 elf_elfheader (obfd)->e_flags &= ~EF_PPC_RELOCATABLE_LIB;
4867
4868 /* The output is -mrelocatable iff it can't be -mrelocatable-lib,
4869 but each input file is either -mrelocatable or -mrelocatable-lib. */
4870 if (! (elf_elfheader (obfd)->e_flags & EF_PPC_RELOCATABLE_LIB)
4871 && (new_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE))
4872 && (old_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE)))
4873 elf_elfheader (obfd)->e_flags |= EF_PPC_RELOCATABLE;
4874
4875 /* Do not warn about eabi vs. V.4 mismatch, just or in the bit if
4876 any module uses it. */
4877 elf_elfheader (obfd)->e_flags |= (new_flags & EF_PPC_EMB);
4878
4879 new_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
4880 old_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
4881
4882 /* Warn about any other mismatches. */
4883 if (new_flags != old_flags)
4884 {
4885 error = TRUE;
4886 _bfd_error_handler
4887 (_("%B: uses different e_flags (0x%lx) fields "
4888 "than previous modules (0x%lx)"),
4889 ibfd, (long) new_flags, (long) old_flags);
4890 }
4891
4892 if (error)
4893 {
4894 bfd_set_error (bfd_error_bad_value);
4895 return FALSE;
4896 }
4897 }
4898
4899 return TRUE;
4900 }
4901
4902 static void
4903 ppc_elf_vle_split16 (bfd *output_bfd, bfd_byte *loc,
4904 bfd_vma value,
4905 split16_format_type split16_format)
4906
4907 {
4908 unsigned int insn, top5;
4909
4910 insn = bfd_get_32 (output_bfd, loc);
4911 top5 = value & 0xf800;
4912 top5 = top5 << (split16_format == split16a_type ? 9 : 5);
4913 insn &= (split16_format == split16a_type ? ~0x1f007ff : ~0x1f07ff);
4914 insn |= top5;
4915 insn |= value & 0x7ff;
4916 bfd_put_32 (output_bfd, insn, loc);
4917 }
4918
4919 \f
4920 /* Choose which PLT scheme to use, and set .plt flags appropriately.
4921 Returns -1 on error, 0 for old PLT, 1 for new PLT. */
4922 int
4923 ppc_elf_select_plt_layout (bfd *output_bfd ATTRIBUTE_UNUSED,
4924 struct bfd_link_info *info)
4925 {
4926 struct ppc_elf_link_hash_table *htab;
4927 flagword flags;
4928
4929 htab = ppc_elf_hash_table (info);
4930
4931 if (htab->plt_type == PLT_UNSET)
4932 {
4933 struct elf_link_hash_entry *h;
4934
4935 if (htab->params->plt_style == PLT_OLD)
4936 htab->plt_type = PLT_OLD;
4937 else if (bfd_link_pic (info)
4938 && htab->elf.dynamic_sections_created
4939 && (h = elf_link_hash_lookup (&htab->elf, "_mcount",
4940 FALSE, FALSE, TRUE)) != NULL
4941 && (h->type == STT_FUNC
4942 || h->needs_plt)
4943 && h->ref_regular
4944 && !(SYMBOL_CALLS_LOCAL (info, h)
4945 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
4946 && h->root.type == bfd_link_hash_undefweak)))
4947 {
4948 /* Profiling of shared libs (and pies) is not supported with
4949 secure plt, because ppc32 does profiling before a
4950 function prologue and a secure plt pic call stubs needs
4951 r30 to be set up. */
4952 htab->plt_type = PLT_OLD;
4953 }
4954 else
4955 {
4956 bfd *ibfd;
4957 enum ppc_elf_plt_type plt_type = htab->params->plt_style;
4958
4959 /* Look through the reloc flags left by ppc_elf_check_relocs.
4960 Use the old style bss plt if a file makes plt calls
4961 without using the new relocs, and if ld isn't given
4962 --secure-plt and we never see REL16 relocs. */
4963 if (plt_type == PLT_UNSET)
4964 plt_type = PLT_OLD;
4965 for (ibfd = info->input_bfds; ibfd; ibfd = ibfd->link.next)
4966 if (is_ppc_elf (ibfd))
4967 {
4968 if (ppc_elf_tdata (ibfd)->has_rel16)
4969 plt_type = PLT_NEW;
4970 else if (ppc_elf_tdata (ibfd)->makes_plt_call)
4971 {
4972 plt_type = PLT_OLD;
4973 htab->old_bfd = ibfd;
4974 break;
4975 }
4976 }
4977 htab->plt_type = plt_type;
4978 }
4979 }
4980 if (htab->plt_type == PLT_OLD && htab->params->plt_style == PLT_NEW)
4981 {
4982 if (htab->old_bfd != NULL)
4983 info->callbacks->einfo (_("%P: bss-plt forced due to %B\n"),
4984 htab->old_bfd);
4985 else
4986 info->callbacks->einfo (_("%P: bss-plt forced by profiling\n"));
4987 }
4988
4989 BFD_ASSERT (htab->plt_type != PLT_VXWORKS);
4990
4991 if (htab->plt_type == PLT_NEW)
4992 {
4993 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
4994 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4995
4996 /* The new PLT is a loaded section. */
4997 if (htab->plt != NULL
4998 && !bfd_set_section_flags (htab->elf.dynobj, htab->plt, flags))
4999 return -1;
5000
5001 /* The new GOT is not executable. */
5002 if (htab->got != NULL
5003 && !bfd_set_section_flags (htab->elf.dynobj, htab->got, flags))
5004 return -1;
5005 }
5006 else
5007 {
5008 /* Stop an unused .glink section from affecting .text alignment. */
5009 if (htab->glink != NULL
5010 && !bfd_set_section_alignment (htab->elf.dynobj, htab->glink, 0))
5011 return -1;
5012 }
5013 return htab->plt_type == PLT_NEW;
5014 }
5015 \f
5016 /* Return the section that should be marked against GC for a given
5017 relocation. */
5018
5019 static asection *
5020 ppc_elf_gc_mark_hook (asection *sec,
5021 struct bfd_link_info *info,
5022 Elf_Internal_Rela *rel,
5023 struct elf_link_hash_entry *h,
5024 Elf_Internal_Sym *sym)
5025 {
5026 if (h != NULL)
5027 switch (ELF32_R_TYPE (rel->r_info))
5028 {
5029 case R_PPC_GNU_VTINHERIT:
5030 case R_PPC_GNU_VTENTRY:
5031 return NULL;
5032 }
5033
5034 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
5035 }
5036
5037 /* Update the got, plt and dynamic reloc reference counts for the
5038 section being removed. */
5039
5040 static bfd_boolean
5041 ppc_elf_gc_sweep_hook (bfd *abfd,
5042 struct bfd_link_info *info,
5043 asection *sec,
5044 const Elf_Internal_Rela *relocs)
5045 {
5046 struct ppc_elf_link_hash_table *htab;
5047 Elf_Internal_Shdr *symtab_hdr;
5048 struct elf_link_hash_entry **sym_hashes;
5049 bfd_signed_vma *local_got_refcounts;
5050 const Elf_Internal_Rela *rel, *relend;
5051 asection *got2;
5052
5053 if (bfd_link_relocatable (info))
5054 return TRUE;
5055
5056 if ((sec->flags & SEC_ALLOC) == 0)
5057 return TRUE;
5058
5059 elf_section_data (sec)->local_dynrel = NULL;
5060
5061 htab = ppc_elf_hash_table (info);
5062 symtab_hdr = &elf_symtab_hdr (abfd);
5063 sym_hashes = elf_sym_hashes (abfd);
5064 local_got_refcounts = elf_local_got_refcounts (abfd);
5065 got2 = bfd_get_section_by_name (abfd, ".got2");
5066
5067 relend = relocs + sec->reloc_count;
5068 for (rel = relocs; rel < relend; rel++)
5069 {
5070 unsigned long r_symndx;
5071 enum elf_ppc_reloc_type r_type;
5072 struct elf_link_hash_entry *h = NULL;
5073
5074 r_symndx = ELF32_R_SYM (rel->r_info);
5075 if (r_symndx >= symtab_hdr->sh_info)
5076 {
5077 struct elf_dyn_relocs **pp, *p;
5078 struct ppc_elf_link_hash_entry *eh;
5079
5080 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5081 while (h->root.type == bfd_link_hash_indirect
5082 || h->root.type == bfd_link_hash_warning)
5083 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5084 eh = (struct ppc_elf_link_hash_entry *) h;
5085
5086 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
5087 if (p->sec == sec)
5088 {
5089 /* Everything must go for SEC. */
5090 *pp = p->next;
5091 break;
5092 }
5093 }
5094
5095 r_type = ELF32_R_TYPE (rel->r_info);
5096 if (!htab->is_vxworks
5097 && h == NULL
5098 && local_got_refcounts != NULL
5099 && (!bfd_link_pic (info)
5100 || is_branch_reloc (r_type)))
5101 {
5102 struct plt_entry **local_plt = (struct plt_entry **)
5103 (local_got_refcounts + symtab_hdr->sh_info);
5104 char *local_got_tls_masks = (char *)
5105 (local_plt + symtab_hdr->sh_info);
5106 if ((local_got_tls_masks[r_symndx] & PLT_IFUNC) != 0)
5107 {
5108 struct plt_entry **ifunc = local_plt + r_symndx;
5109 bfd_vma addend = 0;
5110 struct plt_entry *ent;
5111
5112 if (r_type == R_PPC_PLTREL24 && bfd_link_pic (info))
5113 addend = rel->r_addend;
5114 ent = find_plt_ent (ifunc, got2, addend);
5115 if (ent->plt.refcount > 0)
5116 ent->plt.refcount -= 1;
5117 continue;
5118 }
5119 }
5120
5121 switch (r_type)
5122 {
5123 case R_PPC_GOT_TLSLD16:
5124 case R_PPC_GOT_TLSLD16_LO:
5125 case R_PPC_GOT_TLSLD16_HI:
5126 case R_PPC_GOT_TLSLD16_HA:
5127 case R_PPC_GOT_TLSGD16:
5128 case R_PPC_GOT_TLSGD16_LO:
5129 case R_PPC_GOT_TLSGD16_HI:
5130 case R_PPC_GOT_TLSGD16_HA:
5131 case R_PPC_GOT_TPREL16:
5132 case R_PPC_GOT_TPREL16_LO:
5133 case R_PPC_GOT_TPREL16_HI:
5134 case R_PPC_GOT_TPREL16_HA:
5135 case R_PPC_GOT_DTPREL16:
5136 case R_PPC_GOT_DTPREL16_LO:
5137 case R_PPC_GOT_DTPREL16_HI:
5138 case R_PPC_GOT_DTPREL16_HA:
5139 case R_PPC_GOT16:
5140 case R_PPC_GOT16_LO:
5141 case R_PPC_GOT16_HI:
5142 case R_PPC_GOT16_HA:
5143 if (h != NULL)
5144 {
5145 if (h->got.refcount > 0)
5146 h->got.refcount--;
5147 if (!bfd_link_pic (info))
5148 {
5149 struct plt_entry *ent;
5150
5151 ent = find_plt_ent (&h->plt.plist, NULL, 0);
5152 if (ent != NULL && ent->plt.refcount > 0)
5153 ent->plt.refcount -= 1;
5154 }
5155 }
5156 else if (local_got_refcounts != NULL)
5157 {
5158 if (local_got_refcounts[r_symndx] > 0)
5159 local_got_refcounts[r_symndx]--;
5160 }
5161 break;
5162
5163 case R_PPC_REL24:
5164 case R_PPC_REL14:
5165 case R_PPC_REL14_BRTAKEN:
5166 case R_PPC_REL14_BRNTAKEN:
5167 case R_PPC_REL32:
5168 if (h == NULL || h == htab->elf.hgot)
5169 break;
5170 /* Fall thru */
5171
5172 case R_PPC_ADDR32:
5173 case R_PPC_ADDR24:
5174 case R_PPC_ADDR16:
5175 case R_PPC_ADDR16_LO:
5176 case R_PPC_ADDR16_HI:
5177 case R_PPC_ADDR16_HA:
5178 case R_PPC_ADDR14:
5179 case R_PPC_ADDR14_BRTAKEN:
5180 case R_PPC_ADDR14_BRNTAKEN:
5181 case R_PPC_UADDR32:
5182 case R_PPC_UADDR16:
5183 if (bfd_link_pic (info))
5184 break;
5185
5186 case R_PPC_PLT32:
5187 case R_PPC_PLTREL24:
5188 case R_PPC_PLTREL32:
5189 case R_PPC_PLT16_LO:
5190 case R_PPC_PLT16_HI:
5191 case R_PPC_PLT16_HA:
5192 if (h != NULL)
5193 {
5194 bfd_vma addend = 0;
5195 struct plt_entry *ent;
5196
5197 if (r_type == R_PPC_PLTREL24 && bfd_link_pic (info))
5198 addend = rel->r_addend;
5199 ent = find_plt_ent (&h->plt.plist, got2, addend);
5200 if (ent != NULL && ent->plt.refcount > 0)
5201 ent->plt.refcount -= 1;
5202 }
5203 break;
5204
5205 default:
5206 break;
5207 }
5208 }
5209 return TRUE;
5210 }
5211 \f
5212 /* Set plt output section type, htab->tls_get_addr, and call the
5213 generic ELF tls_setup function. */
5214
5215 asection *
5216 ppc_elf_tls_setup (bfd *obfd, struct bfd_link_info *info)
5217 {
5218 struct ppc_elf_link_hash_table *htab;
5219
5220 htab = ppc_elf_hash_table (info);
5221 htab->tls_get_addr = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
5222 FALSE, FALSE, TRUE);
5223 if (htab->plt_type != PLT_NEW)
5224 htab->params->no_tls_get_addr_opt = TRUE;
5225
5226 if (!htab->params->no_tls_get_addr_opt)
5227 {
5228 struct elf_link_hash_entry *opt, *tga;
5229 opt = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_opt",
5230 FALSE, FALSE, TRUE);
5231 if (opt != NULL
5232 && (opt->root.type == bfd_link_hash_defined
5233 || opt->root.type == bfd_link_hash_defweak))
5234 {
5235 /* If glibc supports an optimized __tls_get_addr call stub,
5236 signalled by the presence of __tls_get_addr_opt, and we'll
5237 be calling __tls_get_addr via a plt call stub, then
5238 make __tls_get_addr point to __tls_get_addr_opt. */
5239 tga = htab->tls_get_addr;
5240 if (htab->elf.dynamic_sections_created
5241 && tga != NULL
5242 && (tga->type == STT_FUNC
5243 || tga->needs_plt)
5244 && !(SYMBOL_CALLS_LOCAL (info, tga)
5245 || (ELF_ST_VISIBILITY (tga->other) != STV_DEFAULT
5246 && tga->root.type == bfd_link_hash_undefweak)))
5247 {
5248 struct plt_entry *ent;
5249 for (ent = tga->plt.plist; ent != NULL; ent = ent->next)
5250 if (ent->plt.refcount > 0)
5251 break;
5252 if (ent != NULL)
5253 {
5254 tga->root.type = bfd_link_hash_indirect;
5255 tga->root.u.i.link = &opt->root;
5256 ppc_elf_copy_indirect_symbol (info, opt, tga);
5257 opt->forced_local = 0;
5258 if (opt->dynindx != -1)
5259 {
5260 /* Use __tls_get_addr_opt in dynamic relocations. */
5261 opt->dynindx = -1;
5262 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
5263 opt->dynstr_index);
5264 if (!bfd_elf_link_record_dynamic_symbol (info, opt))
5265 return FALSE;
5266 }
5267 htab->tls_get_addr = opt;
5268 }
5269 }
5270 }
5271 else
5272 htab->params->no_tls_get_addr_opt = TRUE;
5273 }
5274 if (htab->plt_type == PLT_NEW
5275 && htab->plt != NULL
5276 && htab->plt->output_section != NULL)
5277 {
5278 elf_section_type (htab->plt->output_section) = SHT_PROGBITS;
5279 elf_section_flags (htab->plt->output_section) = SHF_ALLOC + SHF_WRITE;
5280 }
5281
5282 return _bfd_elf_tls_setup (obfd, info);
5283 }
5284
5285 /* Return TRUE iff REL is a branch reloc with a global symbol matching
5286 HASH. */
5287
5288 static bfd_boolean
5289 branch_reloc_hash_match (const bfd *ibfd,
5290 const Elf_Internal_Rela *rel,
5291 const struct elf_link_hash_entry *hash)
5292 {
5293 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
5294 enum elf_ppc_reloc_type r_type = ELF32_R_TYPE (rel->r_info);
5295 unsigned int r_symndx = ELF32_R_SYM (rel->r_info);
5296
5297 if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type))
5298 {
5299 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
5300 struct elf_link_hash_entry *h;
5301
5302 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5303 while (h->root.type == bfd_link_hash_indirect
5304 || h->root.type == bfd_link_hash_warning)
5305 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5306 if (h == hash)
5307 return TRUE;
5308 }
5309 return FALSE;
5310 }
5311
5312 /* Run through all the TLS relocs looking for optimization
5313 opportunities. */
5314
5315 bfd_boolean
5316 ppc_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED,
5317 struct bfd_link_info *info)
5318 {
5319 bfd *ibfd;
5320 asection *sec;
5321 struct ppc_elf_link_hash_table *htab;
5322 int pass;
5323
5324 if (!bfd_link_executable (info))
5325 return TRUE;
5326
5327 htab = ppc_elf_hash_table (info);
5328 if (htab == NULL)
5329 return FALSE;
5330
5331 /* Make two passes through the relocs. First time check that tls
5332 relocs involved in setting up a tls_get_addr call are indeed
5333 followed by such a call. If they are not, don't do any tls
5334 optimization. On the second pass twiddle tls_mask flags to
5335 notify relocate_section that optimization can be done, and
5336 adjust got and plt refcounts. */
5337 for (pass = 0; pass < 2; ++pass)
5338 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
5339 {
5340 Elf_Internal_Sym *locsyms = NULL;
5341 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
5342 asection *got2 = bfd_get_section_by_name (ibfd, ".got2");
5343
5344 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
5345 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
5346 {
5347 Elf_Internal_Rela *relstart, *rel, *relend;
5348 int expecting_tls_get_addr = 0;
5349
5350 /* Read the relocations. */
5351 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
5352 info->keep_memory);
5353 if (relstart == NULL)
5354 return FALSE;
5355
5356 relend = relstart + sec->reloc_count;
5357 for (rel = relstart; rel < relend; rel++)
5358 {
5359 enum elf_ppc_reloc_type r_type;
5360 unsigned long r_symndx;
5361 struct elf_link_hash_entry *h = NULL;
5362 char *tls_mask;
5363 char tls_set, tls_clear;
5364 bfd_boolean is_local;
5365 bfd_signed_vma *got_count;
5366
5367 r_symndx = ELF32_R_SYM (rel->r_info);
5368 if (r_symndx >= symtab_hdr->sh_info)
5369 {
5370 struct elf_link_hash_entry **sym_hashes;
5371
5372 sym_hashes = elf_sym_hashes (ibfd);
5373 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5374 while (h->root.type == bfd_link_hash_indirect
5375 || h->root.type == bfd_link_hash_warning)
5376 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5377 }
5378
5379 is_local = FALSE;
5380 if (h == NULL
5381 || !h->def_dynamic)
5382 is_local = TRUE;
5383
5384 r_type = ELF32_R_TYPE (rel->r_info);
5385 /* If this section has old-style __tls_get_addr calls
5386 without marker relocs, then check that each
5387 __tls_get_addr call reloc is preceded by a reloc
5388 that conceivably belongs to the __tls_get_addr arg
5389 setup insn. If we don't find matching arg setup
5390 relocs, don't do any tls optimization. */
5391 if (pass == 0
5392 && sec->has_tls_get_addr_call
5393 && h != NULL
5394 && h == htab->tls_get_addr
5395 && !expecting_tls_get_addr
5396 && is_branch_reloc (r_type))
5397 {
5398 info->callbacks->minfo ("%H __tls_get_addr lost arg, "
5399 "TLS optimization disabled\n",
5400 ibfd, sec, rel->r_offset);
5401 if (elf_section_data (sec)->relocs != relstart)
5402 free (relstart);
5403 return TRUE;
5404 }
5405
5406 expecting_tls_get_addr = 0;
5407 switch (r_type)
5408 {
5409 case R_PPC_GOT_TLSLD16:
5410 case R_PPC_GOT_TLSLD16_LO:
5411 expecting_tls_get_addr = 1;
5412 /* Fall thru */
5413
5414 case R_PPC_GOT_TLSLD16_HI:
5415 case R_PPC_GOT_TLSLD16_HA:
5416 /* These relocs should never be against a symbol
5417 defined in a shared lib. Leave them alone if
5418 that turns out to be the case. */
5419 if (!is_local)
5420 continue;
5421
5422 /* LD -> LE */
5423 tls_set = 0;
5424 tls_clear = TLS_LD;
5425 break;
5426
5427 case R_PPC_GOT_TLSGD16:
5428 case R_PPC_GOT_TLSGD16_LO:
5429 expecting_tls_get_addr = 1;
5430 /* Fall thru */
5431
5432 case R_PPC_GOT_TLSGD16_HI:
5433 case R_PPC_GOT_TLSGD16_HA:
5434 if (is_local)
5435 /* GD -> LE */
5436 tls_set = 0;
5437 else
5438 /* GD -> IE */
5439 tls_set = TLS_TLS | TLS_TPRELGD;
5440 tls_clear = TLS_GD;
5441 break;
5442
5443 case R_PPC_GOT_TPREL16:
5444 case R_PPC_GOT_TPREL16_LO:
5445 case R_PPC_GOT_TPREL16_HI:
5446 case R_PPC_GOT_TPREL16_HA:
5447 if (is_local)
5448 {
5449 /* IE -> LE */
5450 tls_set = 0;
5451 tls_clear = TLS_TPREL;
5452 break;
5453 }
5454 else
5455 continue;
5456
5457 case R_PPC_TLSGD:
5458 case R_PPC_TLSLD:
5459 expecting_tls_get_addr = 2;
5460 tls_set = 0;
5461 tls_clear = 0;
5462 break;
5463
5464 default:
5465 continue;
5466 }
5467
5468 if (pass == 0)
5469 {
5470 if (!expecting_tls_get_addr
5471 || (expecting_tls_get_addr == 1
5472 && !sec->has_tls_get_addr_call))
5473 continue;
5474
5475 if (rel + 1 < relend
5476 && branch_reloc_hash_match (ibfd, rel + 1,
5477 htab->tls_get_addr))
5478 continue;
5479
5480 /* Uh oh, we didn't find the expected call. We
5481 could just mark this symbol to exclude it
5482 from tls optimization but it's safer to skip
5483 the entire optimization. */
5484 info->callbacks->minfo (_("%H arg lost __tls_get_addr, "
5485 "TLS optimization disabled\n"),
5486 ibfd, sec, rel->r_offset);
5487 if (elf_section_data (sec)->relocs != relstart)
5488 free (relstart);
5489 return TRUE;
5490 }
5491
5492 if (expecting_tls_get_addr)
5493 {
5494 struct plt_entry *ent;
5495 bfd_vma addend = 0;
5496
5497 if (bfd_link_pic (info)
5498 && ELF32_R_TYPE (rel[1].r_info) == R_PPC_PLTREL24)
5499 addend = rel[1].r_addend;
5500 ent = find_plt_ent (&htab->tls_get_addr->plt.plist,
5501 got2, addend);
5502 if (ent != NULL && ent->plt.refcount > 0)
5503 ent->plt.refcount -= 1;
5504
5505 if (expecting_tls_get_addr == 2)
5506 continue;
5507 }
5508
5509 if (h != NULL)
5510 {
5511 tls_mask = &ppc_elf_hash_entry (h)->tls_mask;
5512 got_count = &h->got.refcount;
5513 }
5514 else
5515 {
5516 bfd_signed_vma *lgot_refs;
5517 struct plt_entry **local_plt;
5518 char *lgot_masks;
5519
5520 if (locsyms == NULL)
5521 {
5522 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
5523 if (locsyms == NULL)
5524 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
5525 symtab_hdr->sh_info,
5526 0, NULL, NULL, NULL);
5527 if (locsyms == NULL)
5528 {
5529 if (elf_section_data (sec)->relocs != relstart)
5530 free (relstart);
5531 return FALSE;
5532 }
5533 }
5534 lgot_refs = elf_local_got_refcounts (ibfd);
5535 if (lgot_refs == NULL)
5536 abort ();
5537 local_plt = (struct plt_entry **)
5538 (lgot_refs + symtab_hdr->sh_info);
5539 lgot_masks = (char *) (local_plt + symtab_hdr->sh_info);
5540 tls_mask = &lgot_masks[r_symndx];
5541 got_count = &lgot_refs[r_symndx];
5542 }
5543
5544 if (tls_set == 0)
5545 {
5546 /* We managed to get rid of a got entry. */
5547 if (*got_count > 0)
5548 *got_count -= 1;
5549 }
5550
5551 *tls_mask |= tls_set;
5552 *tls_mask &= ~tls_clear;
5553 }
5554
5555 if (elf_section_data (sec)->relocs != relstart)
5556 free (relstart);
5557 }
5558
5559 if (locsyms != NULL
5560 && (symtab_hdr->contents != (unsigned char *) locsyms))
5561 {
5562 if (!info->keep_memory)
5563 free (locsyms);
5564 else
5565 symtab_hdr->contents = (unsigned char *) locsyms;
5566 }
5567 }
5568 return TRUE;
5569 }
5570 \f
5571 /* Return true if we have dynamic relocs that apply to read-only sections. */
5572
5573 static bfd_boolean
5574 readonly_dynrelocs (struct elf_link_hash_entry *h)
5575 {
5576 struct elf_dyn_relocs *p;
5577
5578 for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next)
5579 {
5580 asection *s = p->sec->output_section;
5581
5582 if (s != NULL
5583 && ((s->flags & (SEC_READONLY | SEC_ALLOC))
5584 == (SEC_READONLY | SEC_ALLOC)))
5585 return TRUE;
5586 }
5587 return FALSE;
5588 }
5589
5590 /* Adjust a symbol defined by a dynamic object and referenced by a
5591 regular object. The current definition is in some section of the
5592 dynamic object, but we're not including those sections. We have to
5593 change the definition to something the rest of the link can
5594 understand. */
5595
5596 static bfd_boolean
5597 ppc_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
5598 struct elf_link_hash_entry *h)
5599 {
5600 struct ppc_elf_link_hash_table *htab;
5601 asection *s;
5602
5603 #ifdef DEBUG
5604 fprintf (stderr, "ppc_elf_adjust_dynamic_symbol called for %s\n",
5605 h->root.root.string);
5606 #endif
5607
5608 /* Make sure we know what is going on here. */
5609 htab = ppc_elf_hash_table (info);
5610 BFD_ASSERT (htab->elf.dynobj != NULL
5611 && (h->needs_plt
5612 || h->type == STT_GNU_IFUNC
5613 || h->u.weakdef != NULL
5614 || (h->def_dynamic
5615 && h->ref_regular
5616 && !h->def_regular)));
5617
5618 /* Deal with function syms. */
5619 if (h->type == STT_FUNC
5620 || h->type == STT_GNU_IFUNC
5621 || h->needs_plt)
5622 {
5623 /* Clear procedure linkage table information for any symbol that
5624 won't need a .plt entry. */
5625 struct plt_entry *ent;
5626 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
5627 if (ent->plt.refcount > 0)
5628 break;
5629 if (ent == NULL
5630 || (h->type != STT_GNU_IFUNC
5631 && (SYMBOL_CALLS_LOCAL (info, h)
5632 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
5633 && h->root.type == bfd_link_hash_undefweak))))
5634 {
5635 /* A PLT entry is not required/allowed when:
5636
5637 1. We are not using ld.so; because then the PLT entry
5638 can't be set up, so we can't use one. In this case,
5639 ppc_elf_adjust_dynamic_symbol won't even be called.
5640
5641 2. GC has rendered the entry unused.
5642
5643 3. We know for certain that a call to this symbol
5644 will go to this object, or will remain undefined. */
5645 h->plt.plist = NULL;
5646 h->needs_plt = 0;
5647 h->pointer_equality_needed = 0;
5648 }
5649 else
5650 {
5651 /* Taking a function's address in a read/write section
5652 doesn't require us to define the function symbol in the
5653 executable on a plt call stub. A dynamic reloc can
5654 be used instead. */
5655 if (h->pointer_equality_needed
5656 && h->type != STT_GNU_IFUNC
5657 && !htab->is_vxworks
5658 && !ppc_elf_hash_entry (h)->has_sda_refs
5659 && !readonly_dynrelocs (h))
5660 {
5661 h->pointer_equality_needed = 0;
5662 h->non_got_ref = 0;
5663 }
5664
5665 /* After adjust_dynamic_symbol, non_got_ref set in the
5666 non-shared case means that we have allocated space in
5667 .dynbss for the symbol and thus dyn_relocs for this
5668 symbol should be discarded.
5669 If we get here we know we are making a PLT entry for this
5670 symbol, and in an executable we'd normally resolve
5671 relocations against this symbol to the PLT entry. Allow
5672 dynamic relocs if the reference is weak, and the dynamic
5673 relocs will not cause text relocation. */
5674 else if (!h->ref_regular_nonweak
5675 && h->non_got_ref
5676 && h->type != STT_GNU_IFUNC
5677 && !htab->is_vxworks
5678 && !ppc_elf_hash_entry (h)->has_sda_refs
5679 && !readonly_dynrelocs (h))
5680 h->non_got_ref = 0;
5681 }
5682 h->protected_def = 0;
5683 return TRUE;
5684 }
5685 else
5686 h->plt.plist = NULL;
5687
5688 /* If this is a weak symbol, and there is a real definition, the
5689 processor independent code will have arranged for us to see the
5690 real definition first, and we can just use the same value. */
5691 if (h->u.weakdef != NULL)
5692 {
5693 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
5694 || h->u.weakdef->root.type == bfd_link_hash_defweak);
5695 h->root.u.def.section = h->u.weakdef->root.u.def.section;
5696 h->root.u.def.value = h->u.weakdef->root.u.def.value;
5697 if (ELIMINATE_COPY_RELOCS)
5698 h->non_got_ref = h->u.weakdef->non_got_ref;
5699 return TRUE;
5700 }
5701
5702 /* This is a reference to a symbol defined by a dynamic object which
5703 is not a function. */
5704
5705 /* If we are creating a shared library, we must presume that the
5706 only references to the symbol are via the global offset table.
5707 For such cases we need not do anything here; the relocations will
5708 be handled correctly by relocate_section. */
5709 if (bfd_link_pic (info))
5710 {
5711 h->protected_def = 0;
5712 return TRUE;
5713 }
5714
5715 /* If there are no references to this symbol that do not use the
5716 GOT, we don't need to generate a copy reloc. */
5717 if (!h->non_got_ref)
5718 {
5719 h->protected_def = 0;
5720 return TRUE;
5721 }
5722
5723 /* Protected variables do not work with .dynbss. The copy in
5724 .dynbss won't be used by the shared library with the protected
5725 definition for the variable. Editing to PIC, or text relocations
5726 are preferable to an incorrect program. */
5727 if (h->protected_def)
5728 {
5729 if (ELIMINATE_COPY_RELOCS
5730 && ppc_elf_hash_entry (h)->has_addr16_ha
5731 && ppc_elf_hash_entry (h)->has_addr16_lo
5732 && htab->params->pic_fixup == 0
5733 && info->disable_target_specific_optimizations <= 1)
5734 htab->params->pic_fixup = 1;
5735 h->non_got_ref = 0;
5736 return TRUE;
5737 }
5738
5739 /* If -z nocopyreloc was given, we won't generate them either. */
5740 if (info->nocopyreloc)
5741 {
5742 h->non_got_ref = 0;
5743 return TRUE;
5744 }
5745
5746 /* If we didn't find any dynamic relocs in read-only sections, then
5747 we'll be keeping the dynamic relocs and avoiding the copy reloc.
5748 We can't do this if there are any small data relocations. This
5749 doesn't work on VxWorks, where we can not have dynamic
5750 relocations (other than copy and jump slot relocations) in an
5751 executable. */
5752 if (ELIMINATE_COPY_RELOCS
5753 && !ppc_elf_hash_entry (h)->has_sda_refs
5754 && !htab->is_vxworks
5755 && !h->def_regular
5756 && !readonly_dynrelocs (h))
5757 {
5758 h->non_got_ref = 0;
5759 return TRUE;
5760 }
5761
5762 /* We must allocate the symbol in our .dynbss section, which will
5763 become part of the .bss section of the executable. There will be
5764 an entry for this symbol in the .dynsym section. The dynamic
5765 object will contain position independent code, so all references
5766 from the dynamic object to this symbol will go through the global
5767 offset table. The dynamic linker will use the .dynsym entry to
5768 determine the address it must put in the global offset table, so
5769 both the dynamic object and the regular object will refer to the
5770 same memory location for the variable.
5771
5772 Of course, if the symbol is referenced using SDAREL relocs, we
5773 must instead allocate it in .sbss. */
5774
5775 if (ppc_elf_hash_entry (h)->has_sda_refs)
5776 s = htab->dynsbss;
5777 else
5778 s = htab->dynbss;
5779 BFD_ASSERT (s != NULL);
5780
5781 /* We must generate a R_PPC_COPY reloc to tell the dynamic linker to
5782 copy the initial value out of the dynamic object and into the
5783 runtime process image. We need to remember the offset into the
5784 .rela.bss section we are going to use. */
5785 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
5786 {
5787 asection *srel;
5788
5789 if (ppc_elf_hash_entry (h)->has_sda_refs)
5790 srel = htab->relsbss;
5791 else
5792 srel = htab->relbss;
5793 BFD_ASSERT (srel != NULL);
5794 srel->size += sizeof (Elf32_External_Rela);
5795 h->needs_copy = 1;
5796 }
5797
5798 return _bfd_elf_adjust_dynamic_copy (info, h, s);
5799 }
5800 \f
5801 /* Generate a symbol to mark plt call stubs. For non-PIC code the sym is
5802 xxxxxxxx.plt_call32.<callee> where xxxxxxxx is a hex number, usually 0,
5803 specifying the addend on the plt relocation. For -fpic code, the sym
5804 is xxxxxxxx.plt_pic32.<callee>, and for -fPIC
5805 xxxxxxxx.got2.plt_pic32.<callee>. */
5806
5807 static bfd_boolean
5808 add_stub_sym (struct plt_entry *ent,
5809 struct elf_link_hash_entry *h,
5810 struct bfd_link_info *info)
5811 {
5812 struct elf_link_hash_entry *sh;
5813 size_t len1, len2, len3;
5814 char *name;
5815 const char *stub;
5816 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
5817
5818 if (bfd_link_pic (info))
5819 stub = ".plt_pic32.";
5820 else
5821 stub = ".plt_call32.";
5822
5823 len1 = strlen (h->root.root.string);
5824 len2 = strlen (stub);
5825 len3 = 0;
5826 if (ent->sec)
5827 len3 = strlen (ent->sec->name);
5828 name = bfd_malloc (len1 + len2 + len3 + 9);
5829 if (name == NULL)
5830 return FALSE;
5831 sprintf (name, "%08x", (unsigned) ent->addend & 0xffffffff);
5832 if (ent->sec)
5833 memcpy (name + 8, ent->sec->name, len3);
5834 memcpy (name + 8 + len3, stub, len2);
5835 memcpy (name + 8 + len3 + len2, h->root.root.string, len1 + 1);
5836 sh = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
5837 if (sh == NULL)
5838 return FALSE;
5839 if (sh->root.type == bfd_link_hash_new)
5840 {
5841 sh->root.type = bfd_link_hash_defined;
5842 sh->root.u.def.section = htab->glink;
5843 sh->root.u.def.value = ent->glink_offset;
5844 sh->ref_regular = 1;
5845 sh->def_regular = 1;
5846 sh->ref_regular_nonweak = 1;
5847 sh->forced_local = 1;
5848 sh->non_elf = 0;
5849 sh->root.linker_def = 1;
5850 }
5851 return TRUE;
5852 }
5853
5854 /* Allocate NEED contiguous space in .got, and return the offset.
5855 Handles allocation of the got header when crossing 32k. */
5856
5857 static bfd_vma
5858 allocate_got (struct ppc_elf_link_hash_table *htab, unsigned int need)
5859 {
5860 bfd_vma where;
5861 unsigned int max_before_header;
5862
5863 if (htab->plt_type == PLT_VXWORKS)
5864 {
5865 where = htab->got->size;
5866 htab->got->size += need;
5867 }
5868 else
5869 {
5870 max_before_header = htab->plt_type == PLT_NEW ? 32768 : 32764;
5871 if (need <= htab->got_gap)
5872 {
5873 where = max_before_header - htab->got_gap;
5874 htab->got_gap -= need;
5875 }
5876 else
5877 {
5878 if (htab->got->size + need > max_before_header
5879 && htab->got->size <= max_before_header)
5880 {
5881 htab->got_gap = max_before_header - htab->got->size;
5882 htab->got->size = max_before_header + htab->got_header_size;
5883 }
5884 where = htab->got->size;
5885 htab->got->size += need;
5886 }
5887 }
5888 return where;
5889 }
5890
5891 /* Allocate space in associated reloc sections for dynamic relocs. */
5892
5893 static bfd_boolean
5894 allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
5895 {
5896 struct bfd_link_info *info = inf;
5897 struct ppc_elf_link_hash_entry *eh;
5898 struct ppc_elf_link_hash_table *htab;
5899 struct elf_dyn_relocs *p;
5900
5901 if (h->root.type == bfd_link_hash_indirect)
5902 return TRUE;
5903
5904 htab = ppc_elf_hash_table (info);
5905 if (htab->elf.dynamic_sections_created
5906 || h->type == STT_GNU_IFUNC)
5907 {
5908 struct plt_entry *ent;
5909 bfd_boolean doneone = FALSE;
5910 bfd_vma plt_offset = 0, glink_offset = 0;
5911 bfd_boolean dyn;
5912
5913 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
5914 if (ent->plt.refcount > 0)
5915 {
5916 /* Make sure this symbol is output as a dynamic symbol. */
5917 if (h->dynindx == -1
5918 && !h->forced_local
5919 && !h->def_regular
5920 && htab->elf.dynamic_sections_created)
5921 {
5922 if (! bfd_elf_link_record_dynamic_symbol (info, h))
5923 return FALSE;
5924 }
5925
5926 dyn = htab->elf.dynamic_sections_created;
5927 if (bfd_link_pic (info)
5928 || h->type == STT_GNU_IFUNC
5929 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))
5930 {
5931 asection *s = htab->plt;
5932 if (!dyn || h->dynindx == -1)
5933 s = htab->iplt;
5934
5935 if (htab->plt_type == PLT_NEW || !dyn || h->dynindx == -1)
5936 {
5937 if (!doneone)
5938 {
5939 plt_offset = s->size;
5940 s->size += 4;
5941 }
5942 ent->plt.offset = plt_offset;
5943
5944 s = htab->glink;
5945 if (!doneone || bfd_link_pic (info))
5946 {
5947 glink_offset = s->size;
5948 s->size += GLINK_ENTRY_SIZE;
5949 if (h == htab->tls_get_addr
5950 && !htab->params->no_tls_get_addr_opt)
5951 s->size += TLS_GET_ADDR_GLINK_SIZE - GLINK_ENTRY_SIZE;
5952 }
5953 if (!doneone
5954 && !bfd_link_pic (info)
5955 && h->def_dynamic
5956 && !h->def_regular)
5957 {
5958 h->root.u.def.section = s;
5959 h->root.u.def.value = glink_offset;
5960 }
5961 ent->glink_offset = glink_offset;
5962
5963 if (htab->params->emit_stub_syms
5964 && !add_stub_sym (ent, h, info))
5965 return FALSE;
5966 }
5967 else
5968 {
5969 if (!doneone)
5970 {
5971 /* If this is the first .plt entry, make room
5972 for the special first entry. */
5973 if (s->size == 0)
5974 s->size += htab->plt_initial_entry_size;
5975
5976 /* The PowerPC PLT is actually composed of two
5977 parts, the first part is 2 words (for a load
5978 and a jump), and then there is a remaining
5979 word available at the end. */
5980 plt_offset = (htab->plt_initial_entry_size
5981 + (htab->plt_slot_size
5982 * ((s->size
5983 - htab->plt_initial_entry_size)
5984 / htab->plt_entry_size)));
5985
5986 /* If this symbol is not defined in a regular
5987 file, and we are not generating a shared
5988 library, then set the symbol to this location
5989 in the .plt. This is to avoid text
5990 relocations, and is required to make
5991 function pointers compare as equal between
5992 the normal executable and the shared library. */
5993 if (! bfd_link_pic (info)
5994 && h->def_dynamic
5995 && !h->def_regular)
5996 {
5997 h->root.u.def.section = s;
5998 h->root.u.def.value = plt_offset;
5999 }
6000
6001 /* Make room for this entry. */
6002 s->size += htab->plt_entry_size;
6003 /* After the 8192nd entry, room for two entries
6004 is allocated. */
6005 if (htab->plt_type == PLT_OLD
6006 && (s->size - htab->plt_initial_entry_size)
6007 / htab->plt_entry_size
6008 > PLT_NUM_SINGLE_ENTRIES)
6009 s->size += htab->plt_entry_size;
6010 }
6011 ent->plt.offset = plt_offset;
6012 }
6013
6014 /* We also need to make an entry in the .rela.plt section. */
6015 if (!doneone)
6016 {
6017 if (!htab->elf.dynamic_sections_created
6018 || h->dynindx == -1)
6019 htab->reliplt->size += sizeof (Elf32_External_Rela);
6020 else
6021 {
6022 htab->relplt->size += sizeof (Elf32_External_Rela);
6023
6024 if (htab->plt_type == PLT_VXWORKS)
6025 {
6026 /* Allocate space for the unloaded relocations. */
6027 if (!bfd_link_pic (info)
6028 && htab->elf.dynamic_sections_created)
6029 {
6030 if (ent->plt.offset
6031 == (bfd_vma) htab->plt_initial_entry_size)
6032 {
6033 htab->srelplt2->size
6034 += (sizeof (Elf32_External_Rela)
6035 * VXWORKS_PLTRESOLVE_RELOCS);
6036 }
6037
6038 htab->srelplt2->size
6039 += (sizeof (Elf32_External_Rela)
6040 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS);
6041 }
6042
6043 /* Every PLT entry has an associated GOT entry in
6044 .got.plt. */
6045 htab->sgotplt->size += 4;
6046 }
6047 }
6048 doneone = TRUE;
6049 }
6050 }
6051 else
6052 ent->plt.offset = (bfd_vma) -1;
6053 }
6054 else
6055 ent->plt.offset = (bfd_vma) -1;
6056
6057 if (!doneone)
6058 {
6059 h->plt.plist = NULL;
6060 h->needs_plt = 0;
6061 }
6062 }
6063 else
6064 {
6065 h->plt.plist = NULL;
6066 h->needs_plt = 0;
6067 }
6068
6069 eh = (struct ppc_elf_link_hash_entry *) h;
6070 if (eh->elf.got.refcount > 0
6071 || (ELIMINATE_COPY_RELOCS
6072 && !eh->elf.def_regular
6073 && eh->elf.protected_def
6074 && eh->has_addr16_ha
6075 && eh->has_addr16_lo
6076 && htab->params->pic_fixup > 0))
6077 {
6078 bfd_boolean dyn;
6079 unsigned int need;
6080
6081 /* Make sure this symbol is output as a dynamic symbol. */
6082 if (eh->elf.dynindx == -1
6083 && !eh->elf.forced_local
6084 && eh->elf.type != STT_GNU_IFUNC
6085 && htab->elf.dynamic_sections_created)
6086 {
6087 if (!bfd_elf_link_record_dynamic_symbol (info, &eh->elf))
6088 return FALSE;
6089 }
6090
6091 need = 0;
6092 if ((eh->tls_mask & TLS_TLS) != 0)
6093 {
6094 if ((eh->tls_mask & TLS_LD) != 0)
6095 {
6096 if (!eh->elf.def_dynamic)
6097 /* We'll just use htab->tlsld_got.offset. This should
6098 always be the case. It's a little odd if we have
6099 a local dynamic reloc against a non-local symbol. */
6100 htab->tlsld_got.refcount += 1;
6101 else
6102 need += 8;
6103 }
6104 if ((eh->tls_mask & TLS_GD) != 0)
6105 need += 8;
6106 if ((eh->tls_mask & (TLS_TPREL | TLS_TPRELGD)) != 0)
6107 need += 4;
6108 if ((eh->tls_mask & TLS_DTPREL) != 0)
6109 need += 4;
6110 }
6111 else
6112 need += 4;
6113 if (need == 0)
6114 eh->elf.got.offset = (bfd_vma) -1;
6115 else
6116 {
6117 eh->elf.got.offset = allocate_got (htab, need);
6118 dyn = htab->elf.dynamic_sections_created;
6119 if ((bfd_link_pic (info)
6120 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, &eh->elf))
6121 && (ELF_ST_VISIBILITY (eh->elf.other) == STV_DEFAULT
6122 || eh->elf.root.type != bfd_link_hash_undefweak))
6123 {
6124 asection *rsec = htab->relgot;
6125
6126 if (eh->elf.type == STT_GNU_IFUNC)
6127 rsec = htab->reliplt;
6128 /* All the entries we allocated need relocs.
6129 Except LD only needs one. */
6130 if ((eh->tls_mask & TLS_LD) != 0
6131 && eh->elf.def_dynamic)
6132 need -= 4;
6133 rsec->size += need * (sizeof (Elf32_External_Rela) / 4);
6134 }
6135 }
6136 }
6137 else
6138 eh->elf.got.offset = (bfd_vma) -1;
6139
6140 if (eh->dyn_relocs == NULL
6141 || !htab->elf.dynamic_sections_created)
6142 return TRUE;
6143
6144 /* In the shared -Bsymbolic case, discard space allocated for
6145 dynamic pc-relative relocs against symbols which turn out to be
6146 defined in regular objects. For the normal shared case, discard
6147 space for relocs that have become local due to symbol visibility
6148 changes. */
6149
6150 if (bfd_link_pic (info))
6151 {
6152 /* Relocs that use pc_count are those that appear on a call insn,
6153 or certain REL relocs (see must_be_dyn_reloc) that can be
6154 generated via assembly. We want calls to protected symbols to
6155 resolve directly to the function rather than going via the plt.
6156 If people want function pointer comparisons to work as expected
6157 then they should avoid writing weird assembly. */
6158 if (SYMBOL_CALLS_LOCAL (info, h))
6159 {
6160 struct elf_dyn_relocs **pp;
6161
6162 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
6163 {
6164 p->count -= p->pc_count;
6165 p->pc_count = 0;
6166 if (p->count == 0)
6167 *pp = p->next;
6168 else
6169 pp = &p->next;
6170 }
6171 }
6172
6173 if (htab->is_vxworks)
6174 {
6175 struct elf_dyn_relocs **pp;
6176
6177 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
6178 {
6179 if (strcmp (p->sec->output_section->name, ".tls_vars") == 0)
6180 *pp = p->next;
6181 else
6182 pp = &p->next;
6183 }
6184 }
6185
6186 /* Discard relocs on undefined symbols that must be local. */
6187 if (eh->dyn_relocs != NULL
6188 && h->root.type == bfd_link_hash_undefined
6189 && (ELF_ST_VISIBILITY (h->other) == STV_HIDDEN
6190 || ELF_ST_VISIBILITY (h->other) == STV_INTERNAL))
6191 eh->dyn_relocs = NULL;
6192
6193 /* Also discard relocs on undefined weak syms with non-default
6194 visibility. */
6195 if (eh->dyn_relocs != NULL
6196 && h->root.type == bfd_link_hash_undefweak)
6197 {
6198 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
6199 eh->dyn_relocs = NULL;
6200
6201 /* Make sure undefined weak symbols are output as a dynamic
6202 symbol in PIEs. */
6203 else if (h->dynindx == -1
6204 && !h->forced_local
6205 && !h->def_regular)
6206 {
6207 if (! bfd_elf_link_record_dynamic_symbol (info, h))
6208 return FALSE;
6209 }
6210 }
6211 }
6212 else if (ELIMINATE_COPY_RELOCS)
6213 {
6214 /* For the non-shared case, discard space for relocs against
6215 symbols which turn out to need copy relocs or are not
6216 dynamic. */
6217
6218 if (!h->non_got_ref
6219 && !h->def_regular
6220 && !(h->protected_def
6221 && eh->has_addr16_ha
6222 && eh->has_addr16_lo
6223 && htab->params->pic_fixup > 0))
6224 {
6225 /* Make sure this symbol is output as a dynamic symbol.
6226 Undefined weak syms won't yet be marked as dynamic. */
6227 if (h->dynindx == -1
6228 && !h->forced_local)
6229 {
6230 if (! bfd_elf_link_record_dynamic_symbol (info, h))
6231 return FALSE;
6232 }
6233
6234 /* If that succeeded, we know we'll be keeping all the
6235 relocs. */
6236 if (h->dynindx != -1)
6237 goto keep;
6238 }
6239
6240 eh->dyn_relocs = NULL;
6241
6242 keep: ;
6243 }
6244
6245 /* Finally, allocate space. */
6246 for (p = eh->dyn_relocs; p != NULL; p = p->next)
6247 {
6248 asection *sreloc = elf_section_data (p->sec)->sreloc;
6249 if (eh->elf.type == STT_GNU_IFUNC)
6250 sreloc = htab->reliplt;
6251 sreloc->size += p->count * sizeof (Elf32_External_Rela);
6252 }
6253
6254 return TRUE;
6255 }
6256
6257 /* Set DF_TEXTREL if we find any dynamic relocs that apply to
6258 read-only sections. */
6259
6260 static bfd_boolean
6261 maybe_set_textrel (struct elf_link_hash_entry *h, void *info)
6262 {
6263 if (h->root.type == bfd_link_hash_indirect)
6264 return TRUE;
6265
6266 if (readonly_dynrelocs (h))
6267 {
6268 ((struct bfd_link_info *) info)->flags |= DF_TEXTREL;
6269
6270 /* Not an error, just cut short the traversal. */
6271 return FALSE;
6272 }
6273 return TRUE;
6274 }
6275
6276 static const unsigned char glink_eh_frame_cie[] =
6277 {
6278 0, 0, 0, 16, /* length. */
6279 0, 0, 0, 0, /* id. */
6280 1, /* CIE version. */
6281 'z', 'R', 0, /* Augmentation string. */
6282 4, /* Code alignment. */
6283 0x7c, /* Data alignment. */
6284 65, /* RA reg. */
6285 1, /* Augmentation size. */
6286 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding. */
6287 DW_CFA_def_cfa, 1, 0 /* def_cfa: r1 offset 0. */
6288 };
6289
6290 /* Set the sizes of the dynamic sections. */
6291
6292 static bfd_boolean
6293 ppc_elf_size_dynamic_sections (bfd *output_bfd,
6294 struct bfd_link_info *info)
6295 {
6296 struct ppc_elf_link_hash_table *htab;
6297 asection *s;
6298 bfd_boolean relocs;
6299 bfd *ibfd;
6300
6301 #ifdef DEBUG
6302 fprintf (stderr, "ppc_elf_size_dynamic_sections called\n");
6303 #endif
6304
6305 htab = ppc_elf_hash_table (info);
6306 BFD_ASSERT (htab->elf.dynobj != NULL);
6307
6308 if (elf_hash_table (info)->dynamic_sections_created)
6309 {
6310 /* Set the contents of the .interp section to the interpreter. */
6311 if (bfd_link_executable (info) && !info->nointerp)
6312 {
6313 s = bfd_get_linker_section (htab->elf.dynobj, ".interp");
6314 BFD_ASSERT (s != NULL);
6315 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
6316 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
6317 }
6318 }
6319
6320 if (htab->plt_type == PLT_OLD)
6321 htab->got_header_size = 16;
6322 else if (htab->plt_type == PLT_NEW)
6323 htab->got_header_size = 12;
6324
6325 /* Set up .got offsets for local syms, and space for local dynamic
6326 relocs. */
6327 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
6328 {
6329 bfd_signed_vma *local_got;
6330 bfd_signed_vma *end_local_got;
6331 struct plt_entry **local_plt;
6332 struct plt_entry **end_local_plt;
6333 char *lgot_masks;
6334 bfd_size_type locsymcount;
6335 Elf_Internal_Shdr *symtab_hdr;
6336
6337 if (!is_ppc_elf (ibfd))
6338 continue;
6339
6340 for (s = ibfd->sections; s != NULL; s = s->next)
6341 {
6342 struct ppc_dyn_relocs *p;
6343
6344 for (p = ((struct ppc_dyn_relocs *)
6345 elf_section_data (s)->local_dynrel);
6346 p != NULL;
6347 p = p->next)
6348 {
6349 if (!bfd_is_abs_section (p->sec)
6350 && bfd_is_abs_section (p->sec->output_section))
6351 {
6352 /* Input section has been discarded, either because
6353 it is a copy of a linkonce section or due to
6354 linker script /DISCARD/, so we'll be discarding
6355 the relocs too. */
6356 }
6357 else if (htab->is_vxworks
6358 && strcmp (p->sec->output_section->name,
6359 ".tls_vars") == 0)
6360 {
6361 /* Relocations in vxworks .tls_vars sections are
6362 handled specially by the loader. */
6363 }
6364 else if (p->count != 0)
6365 {
6366 asection *sreloc = elf_section_data (p->sec)->sreloc;
6367 if (p->ifunc)
6368 sreloc = htab->reliplt;
6369 sreloc->size += p->count * sizeof (Elf32_External_Rela);
6370 if ((p->sec->output_section->flags
6371 & (SEC_READONLY | SEC_ALLOC))
6372 == (SEC_READONLY | SEC_ALLOC))
6373 info->flags |= DF_TEXTREL;
6374 }
6375 }
6376 }
6377
6378 local_got = elf_local_got_refcounts (ibfd);
6379 if (!local_got)
6380 continue;
6381
6382 symtab_hdr = &elf_symtab_hdr (ibfd);
6383 locsymcount = symtab_hdr->sh_info;
6384 end_local_got = local_got + locsymcount;
6385 local_plt = (struct plt_entry **) end_local_got;
6386 end_local_plt = local_plt + locsymcount;
6387 lgot_masks = (char *) end_local_plt;
6388
6389 for (; local_got < end_local_got; ++local_got, ++lgot_masks)
6390 if (*local_got > 0)
6391 {
6392 unsigned int need = 0;
6393 if ((*lgot_masks & TLS_TLS) != 0)
6394 {
6395 if ((*lgot_masks & TLS_GD) != 0)
6396 need += 8;
6397 if ((*lgot_masks & TLS_LD) != 0)
6398 htab->tlsld_got.refcount += 1;
6399 if ((*lgot_masks & (TLS_TPREL | TLS_TPRELGD)) != 0)
6400 need += 4;
6401 if ((*lgot_masks & TLS_DTPREL) != 0)
6402 need += 4;
6403 }
6404 else
6405 need += 4;
6406 if (need == 0)
6407 *local_got = (bfd_vma) -1;
6408 else
6409 {
6410 *local_got = allocate_got (htab, need);
6411 if (bfd_link_pic (info))
6412 {
6413 asection *srel = htab->relgot;
6414 if ((*lgot_masks & PLT_IFUNC) != 0)
6415 srel = htab->reliplt;
6416 srel->size += need * (sizeof (Elf32_External_Rela) / 4);
6417 }
6418 }
6419 }
6420 else
6421 *local_got = (bfd_vma) -1;
6422
6423 if (htab->is_vxworks)
6424 continue;
6425
6426 /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */
6427 for (; local_plt < end_local_plt; ++local_plt)
6428 {
6429 struct plt_entry *ent;
6430 bfd_boolean doneone = FALSE;
6431 bfd_vma plt_offset = 0, glink_offset = 0;
6432
6433 for (ent = *local_plt; ent != NULL; ent = ent->next)
6434 if (ent->plt.refcount > 0)
6435 {
6436 s = htab->iplt;
6437
6438 if (!doneone)
6439 {
6440 plt_offset = s->size;
6441 s->size += 4;
6442 }
6443 ent->plt.offset = plt_offset;
6444
6445 s = htab->glink;
6446 if (!doneone || bfd_link_pic (info))
6447 {
6448 glink_offset = s->size;
6449 s->size += GLINK_ENTRY_SIZE;
6450 }
6451 ent->glink_offset = glink_offset;
6452
6453 if (!doneone)
6454 {
6455 htab->reliplt->size += sizeof (Elf32_External_Rela);
6456 doneone = TRUE;
6457 }
6458 }
6459 else
6460 ent->plt.offset = (bfd_vma) -1;
6461 }
6462 }
6463
6464 /* Allocate space for global sym dynamic relocs. */
6465 elf_link_hash_traverse (elf_hash_table (info), allocate_dynrelocs, info);
6466
6467 if (htab->tlsld_got.refcount > 0)
6468 {
6469 htab->tlsld_got.offset = allocate_got (htab, 8);
6470 if (bfd_link_pic (info))
6471 htab->relgot->size += sizeof (Elf32_External_Rela);
6472 }
6473 else
6474 htab->tlsld_got.offset = (bfd_vma) -1;
6475
6476 if (htab->got != NULL && htab->plt_type != PLT_VXWORKS)
6477 {
6478 unsigned int g_o_t = 32768;
6479
6480 /* If we haven't allocated the header, do so now. When we get here,
6481 for old plt/got the got size will be 0 to 32764 (not allocated),
6482 or 32780 to 65536 (header allocated). For new plt/got, the
6483 corresponding ranges are 0 to 32768 and 32780 to 65536. */
6484 if (htab->got->size <= 32768)
6485 {
6486 g_o_t = htab->got->size;
6487 if (htab->plt_type == PLT_OLD)
6488 g_o_t += 4;
6489 htab->got->size += htab->got_header_size;
6490 }
6491
6492 htab->elf.hgot->root.u.def.value = g_o_t;
6493 }
6494 if (bfd_link_pic (info))
6495 {
6496 struct elf_link_hash_entry *sda = htab->sdata[0].sym;
6497
6498 sda->root.u.def.section = htab->elf.hgot->root.u.def.section;
6499 sda->root.u.def.value = htab->elf.hgot->root.u.def.value;
6500 }
6501 if (info->emitrelocations)
6502 {
6503 struct elf_link_hash_entry *sda = htab->sdata[0].sym;
6504
6505 if (sda != NULL && sda->ref_regular)
6506 sda->root.u.def.section->flags |= SEC_KEEP;
6507 sda = htab->sdata[1].sym;
6508 if (sda != NULL && sda->ref_regular)
6509 sda->root.u.def.section->flags |= SEC_KEEP;
6510 }
6511
6512 if (htab->glink != NULL
6513 && htab->glink->size != 0
6514 && htab->elf.dynamic_sections_created)
6515 {
6516 htab->glink_pltresolve = htab->glink->size;
6517 /* Space for the branch table. ??? We don't need entries for
6518 non-dynamic symbols in this table. This case can arise with
6519 static ifuncs or forced local ifuncs. */
6520 htab->glink->size += htab->glink->size / (GLINK_ENTRY_SIZE / 4) - 4;
6521 /* Pad out to align the start of PLTresolve. */
6522 htab->glink->size += -htab->glink->size & (htab->params->ppc476_workaround
6523 ? 63 : 15);
6524 htab->glink->size += GLINK_PLTRESOLVE;
6525
6526 if (htab->params->emit_stub_syms)
6527 {
6528 struct elf_link_hash_entry *sh;
6529 sh = elf_link_hash_lookup (&htab->elf, "__glink",
6530 TRUE, FALSE, FALSE);
6531 if (sh == NULL)
6532 return FALSE;
6533 if (sh->root.type == bfd_link_hash_new)
6534 {
6535 sh->root.type = bfd_link_hash_defined;
6536 sh->root.u.def.section = htab->glink;
6537 sh->root.u.def.value = htab->glink_pltresolve;
6538 sh->ref_regular = 1;
6539 sh->def_regular = 1;
6540 sh->ref_regular_nonweak = 1;
6541 sh->forced_local = 1;
6542 sh->non_elf = 0;
6543 sh->root.linker_def = 1;
6544 }
6545 sh = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve",
6546 TRUE, FALSE, FALSE);
6547 if (sh == NULL)
6548 return FALSE;
6549 if (sh->root.type == bfd_link_hash_new)
6550 {
6551 sh->root.type = bfd_link_hash_defined;
6552 sh->root.u.def.section = htab->glink;
6553 sh->root.u.def.value = htab->glink->size - GLINK_PLTRESOLVE;
6554 sh->ref_regular = 1;
6555 sh->def_regular = 1;
6556 sh->ref_regular_nonweak = 1;
6557 sh->forced_local = 1;
6558 sh->non_elf = 0;
6559 sh->root.linker_def = 1;
6560 }
6561 }
6562 }
6563
6564 if (htab->glink != NULL
6565 && htab->glink->size != 0
6566 && htab->glink_eh_frame != NULL
6567 && !bfd_is_abs_section (htab->glink_eh_frame->output_section)
6568 && _bfd_elf_eh_frame_present (info))
6569 {
6570 s = htab->glink_eh_frame;
6571 s->size = sizeof (glink_eh_frame_cie) + 20;
6572 if (bfd_link_pic (info))
6573 {
6574 s->size += 4;
6575 if (htab->glink->size - GLINK_PLTRESOLVE + 8 >= 256)
6576 s->size += 4;
6577 }
6578 }
6579
6580 /* We've now determined the sizes of the various dynamic sections.
6581 Allocate memory for them. */
6582 relocs = FALSE;
6583 for (s = htab->elf.dynobj->sections; s != NULL; s = s->next)
6584 {
6585 bfd_boolean strip_section = TRUE;
6586
6587 if ((s->flags & SEC_LINKER_CREATED) == 0)
6588 continue;
6589
6590 if (s == htab->plt
6591 || s == htab->got)
6592 {
6593 /* We'd like to strip these sections if they aren't needed, but if
6594 we've exported dynamic symbols from them we must leave them.
6595 It's too late to tell BFD to get rid of the symbols. */
6596 if (htab->elf.hplt != NULL)
6597 strip_section = FALSE;
6598 /* Strip this section if we don't need it; see the
6599 comment below. */
6600 }
6601 else if (s == htab->iplt
6602 || s == htab->glink
6603 || s == htab->glink_eh_frame
6604 || s == htab->sgotplt
6605 || s == htab->sbss
6606 || s == htab->dynbss
6607 || s == htab->dynsbss)
6608 {
6609 /* Strip these too. */
6610 }
6611 else if (s == htab->sdata[0].section
6612 || s == htab->sdata[1].section)
6613 {
6614 strip_section = (s->flags & SEC_KEEP) == 0;
6615 }
6616 else if (CONST_STRNEQ (bfd_get_section_name (htab->elf.dynobj, s),
6617 ".rela"))
6618 {
6619 if (s->size != 0)
6620 {
6621 /* Remember whether there are any relocation sections. */
6622 relocs = TRUE;
6623
6624 /* We use the reloc_count field as a counter if we need
6625 to copy relocs into the output file. */
6626 s->reloc_count = 0;
6627 }
6628 }
6629 else
6630 {
6631 /* It's not one of our sections, so don't allocate space. */
6632 continue;
6633 }
6634
6635 if (s->size == 0 && strip_section)
6636 {
6637 /* If we don't need this section, strip it from the
6638 output file. This is mostly to handle .rela.bss and
6639 .rela.plt. We must create both sections in
6640 create_dynamic_sections, because they must be created
6641 before the linker maps input sections to output
6642 sections. The linker does that before
6643 adjust_dynamic_symbol is called, and it is that
6644 function which decides whether anything needs to go
6645 into these sections. */
6646 s->flags |= SEC_EXCLUDE;
6647 continue;
6648 }
6649
6650 if ((s->flags & SEC_HAS_CONTENTS) == 0)
6651 continue;
6652
6653 /* Allocate memory for the section contents. */
6654 s->contents = bfd_zalloc (htab->elf.dynobj, s->size);
6655 if (s->contents == NULL)
6656 return FALSE;
6657 }
6658
6659 if (htab->elf.dynamic_sections_created)
6660 {
6661 /* Add some entries to the .dynamic section. We fill in the
6662 values later, in ppc_elf_finish_dynamic_sections, but we
6663 must add the entries now so that we get the correct size for
6664 the .dynamic section. The DT_DEBUG entry is filled in by the
6665 dynamic linker and used by the debugger. */
6666 #define add_dynamic_entry(TAG, VAL) \
6667 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
6668
6669 if (bfd_link_executable (info))
6670 {
6671 if (!add_dynamic_entry (DT_DEBUG, 0))
6672 return FALSE;
6673 }
6674
6675 if (htab->plt != NULL && htab->plt->size != 0)
6676 {
6677 if (!add_dynamic_entry (DT_PLTGOT, 0)
6678 || !add_dynamic_entry (DT_PLTRELSZ, 0)
6679 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
6680 || !add_dynamic_entry (DT_JMPREL, 0))
6681 return FALSE;
6682 }
6683
6684 if (htab->plt_type == PLT_NEW
6685 && htab->glink != NULL
6686 && htab->glink->size != 0)
6687 {
6688 if (!add_dynamic_entry (DT_PPC_GOT, 0))
6689 return FALSE;
6690 if (!htab->params->no_tls_get_addr_opt
6691 && htab->tls_get_addr != NULL
6692 && htab->tls_get_addr->plt.plist != NULL
6693 && !add_dynamic_entry (DT_PPC_OPT, PPC_OPT_TLS))
6694 return FALSE;
6695 }
6696
6697 if (relocs)
6698 {
6699 if (!add_dynamic_entry (DT_RELA, 0)
6700 || !add_dynamic_entry (DT_RELASZ, 0)
6701 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
6702 return FALSE;
6703 }
6704
6705 /* If any dynamic relocs apply to a read-only section, then we
6706 need a DT_TEXTREL entry. */
6707 if ((info->flags & DF_TEXTREL) == 0)
6708 elf_link_hash_traverse (elf_hash_table (info), maybe_set_textrel,
6709 info);
6710
6711 if ((info->flags & DF_TEXTREL) != 0)
6712 {
6713 if (!add_dynamic_entry (DT_TEXTREL, 0))
6714 return FALSE;
6715 }
6716 if (htab->is_vxworks
6717 && !elf_vxworks_add_dynamic_entries (output_bfd, info))
6718 return FALSE;
6719 }
6720 #undef add_dynamic_entry
6721
6722 if (htab->glink_eh_frame != NULL
6723 && htab->glink_eh_frame->contents != NULL)
6724 {
6725 unsigned char *p = htab->glink_eh_frame->contents;
6726 bfd_vma val;
6727
6728 memcpy (p, glink_eh_frame_cie, sizeof (glink_eh_frame_cie));
6729 /* CIE length (rewrite in case little-endian). */
6730 bfd_put_32 (htab->elf.dynobj, sizeof (glink_eh_frame_cie) - 4, p);
6731 p += sizeof (glink_eh_frame_cie);
6732 /* FDE length. */
6733 val = htab->glink_eh_frame->size - 4 - sizeof (glink_eh_frame_cie);
6734 bfd_put_32 (htab->elf.dynobj, val, p);
6735 p += 4;
6736 /* CIE pointer. */
6737 val = p - htab->glink_eh_frame->contents;
6738 bfd_put_32 (htab->elf.dynobj, val, p);
6739 p += 4;
6740 /* Offset to .glink. Set later. */
6741 p += 4;
6742 /* .glink size. */
6743 bfd_put_32 (htab->elf.dynobj, htab->glink->size, p);
6744 p += 4;
6745 /* Augmentation. */
6746 p += 1;
6747
6748 if (bfd_link_pic (info)
6749 && htab->elf.dynamic_sections_created)
6750 {
6751 bfd_vma adv = (htab->glink->size - GLINK_PLTRESOLVE + 8) >> 2;
6752 if (adv < 64)
6753 *p++ = DW_CFA_advance_loc + adv;
6754 else if (adv < 256)
6755 {
6756 *p++ = DW_CFA_advance_loc1;
6757 *p++ = adv;
6758 }
6759 else if (adv < 65536)
6760 {
6761 *p++ = DW_CFA_advance_loc2;
6762 bfd_put_16 (htab->elf.dynobj, adv, p);
6763 p += 2;
6764 }
6765 else
6766 {
6767 *p++ = DW_CFA_advance_loc4;
6768 bfd_put_32 (htab->elf.dynobj, adv, p);
6769 p += 4;
6770 }
6771 *p++ = DW_CFA_register;
6772 *p++ = 65;
6773 p++;
6774 *p++ = DW_CFA_advance_loc + 4;
6775 *p++ = DW_CFA_restore_extended;
6776 *p++ = 65;
6777 }
6778 BFD_ASSERT ((bfd_vma) ((p + 3 - htab->glink_eh_frame->contents) & -4)
6779 == htab->glink_eh_frame->size);
6780 }
6781
6782 return TRUE;
6783 }
6784
6785 /* Arrange to have _SDA_BASE_ or _SDA2_BASE_ stripped from the output
6786 if it looks like nothing is using them. */
6787
6788 static void
6789 maybe_strip_sdasym (bfd *output_bfd, elf_linker_section_t *lsect)
6790 {
6791 struct elf_link_hash_entry *sda = lsect->sym;
6792
6793 if (sda != NULL && !sda->ref_regular && sda->dynindx == -1)
6794 {
6795 asection *s;
6796
6797 s = bfd_get_section_by_name (output_bfd, lsect->name);
6798 if (s == NULL || bfd_section_removed_from_list (output_bfd, s))
6799 {
6800 s = bfd_get_section_by_name (output_bfd, lsect->bss_name);
6801 if (s == NULL || bfd_section_removed_from_list (output_bfd, s))
6802 {
6803 sda->def_regular = 0;
6804 /* This is somewhat magic. See elf_link_output_extsym. */
6805 sda->ref_dynamic = 1;
6806 sda->forced_local = 0;
6807 }
6808 }
6809 }
6810 }
6811
6812 void
6813 ppc_elf_maybe_strip_sdata_syms (struct bfd_link_info *info)
6814 {
6815 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
6816
6817 if (htab != NULL)
6818 {
6819 maybe_strip_sdasym (info->output_bfd, &htab->sdata[0]);
6820 maybe_strip_sdasym (info->output_bfd, &htab->sdata[1]);
6821 }
6822 }
6823
6824
6825 /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
6826
6827 static bfd_boolean
6828 ppc_elf_hash_symbol (struct elf_link_hash_entry *h)
6829 {
6830 if (h->plt.plist != NULL
6831 && !h->def_regular
6832 && (!h->pointer_equality_needed
6833 || !h->ref_regular_nonweak))
6834 return FALSE;
6835
6836 return _bfd_elf_hash_symbol (h);
6837 }
6838 \f
6839 #define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0]))
6840
6841 /* Relaxation trampolines. r12 is available for clobbering (r11, is
6842 used for some functions that are allowed to break the ABI). */
6843 static const int shared_stub_entry[] =
6844 {
6845 0x7c0802a6, /* mflr 0 */
6846 0x429f0005, /* bcl 20, 31, .Lxxx */
6847 0x7d8802a6, /* mflr 12 */
6848 0x3d8c0000, /* addis 12, 12, (xxx-.Lxxx)@ha */
6849 0x398c0000, /* addi 12, 12, (xxx-.Lxxx)@l */
6850 0x7c0803a6, /* mtlr 0 */
6851 0x7d8903a6, /* mtctr 12 */
6852 0x4e800420, /* bctr */
6853 };
6854
6855 static const int stub_entry[] =
6856 {
6857 0x3d800000, /* lis 12,xxx@ha */
6858 0x398c0000, /* addi 12,12,xxx@l */
6859 0x7d8903a6, /* mtctr 12 */
6860 0x4e800420, /* bctr */
6861 };
6862
6863 struct ppc_elf_relax_info
6864 {
6865 unsigned int workaround_size;
6866 unsigned int picfixup_size;
6867 };
6868
6869 /* This function implements long branch trampolines, and the ppc476
6870 icache bug workaround. Any section needing trampolines or patch
6871 space for the workaround has its size extended so that we can
6872 add trampolines at the end of the section. */
6873
6874 static bfd_boolean
6875 ppc_elf_relax_section (bfd *abfd,
6876 asection *isec,
6877 struct bfd_link_info *link_info,
6878 bfd_boolean *again)
6879 {
6880 struct one_branch_fixup
6881 {
6882 struct one_branch_fixup *next;
6883 asection *tsec;
6884 /* Final link, can use the symbol offset. For a
6885 relocatable link we use the symbol's index. */
6886 bfd_vma toff;
6887 bfd_vma trampoff;
6888 };
6889
6890 Elf_Internal_Shdr *symtab_hdr;
6891 bfd_byte *contents = NULL;
6892 Elf_Internal_Sym *isymbuf = NULL;
6893 Elf_Internal_Rela *internal_relocs = NULL;
6894 Elf_Internal_Rela *irel, *irelend = NULL;
6895 struct one_branch_fixup *branch_fixups = NULL;
6896 struct ppc_elf_relax_info *relax_info = NULL;
6897 unsigned changes = 0;
6898 bfd_boolean workaround_change;
6899 struct ppc_elf_link_hash_table *htab;
6900 bfd_size_type trampbase, trampoff, newsize, picfixup_size;
6901 asection *got2;
6902 bfd_boolean maybe_pasted;
6903
6904 *again = FALSE;
6905
6906 /* No need to do anything with non-alloc or non-code sections. */
6907 if ((isec->flags & SEC_ALLOC) == 0
6908 || (isec->flags & SEC_CODE) == 0
6909 || (isec->flags & SEC_LINKER_CREATED) != 0
6910 || isec->size < 4)
6911 return TRUE;
6912
6913 /* We cannot represent the required PIC relocs in the output, so don't
6914 do anything. The linker doesn't support mixing -shared and -r
6915 anyway. */
6916 if (bfd_link_relocatable (link_info) && bfd_link_pic (link_info))
6917 return TRUE;
6918
6919 htab = ppc_elf_hash_table (link_info);
6920 if (htab == NULL)
6921 return TRUE;
6922
6923 isec->size = (isec->size + 3) & -4;
6924 if (isec->rawsize == 0)
6925 isec->rawsize = isec->size;
6926 trampbase = isec->size;
6927
6928 BFD_ASSERT (isec->sec_info_type == SEC_INFO_TYPE_NONE
6929 || isec->sec_info_type == SEC_INFO_TYPE_TARGET);
6930 isec->sec_info_type = SEC_INFO_TYPE_TARGET;
6931
6932 if (htab->params->ppc476_workaround
6933 || htab->params->pic_fixup > 0)
6934 {
6935 if (elf_section_data (isec)->sec_info == NULL)
6936 {
6937 elf_section_data (isec)->sec_info
6938 = bfd_zalloc (abfd, sizeof (struct ppc_elf_relax_info));
6939 if (elf_section_data (isec)->sec_info == NULL)
6940 return FALSE;
6941 }
6942 relax_info = elf_section_data (isec)->sec_info;
6943 trampbase -= relax_info->workaround_size;
6944 }
6945
6946 maybe_pasted = (strcmp (isec->output_section->name, ".init") == 0
6947 || strcmp (isec->output_section->name, ".fini") == 0);
6948 /* Space for a branch around any trampolines. */
6949 trampoff = trampbase;
6950 if (maybe_pasted && trampbase == isec->rawsize)
6951 trampoff += 4;
6952
6953 symtab_hdr = &elf_symtab_hdr (abfd);
6954 picfixup_size = 0;
6955 if (htab->params->branch_trampolines
6956 || htab->params->pic_fixup > 0)
6957 {
6958 /* Get a copy of the native relocations. */
6959 if (isec->reloc_count != 0)
6960 {
6961 internal_relocs = _bfd_elf_link_read_relocs (abfd, isec, NULL, NULL,
6962 link_info->keep_memory);
6963 if (internal_relocs == NULL)
6964 goto error_return;
6965 }
6966
6967 got2 = bfd_get_section_by_name (abfd, ".got2");
6968
6969 irelend = internal_relocs + isec->reloc_count;
6970 for (irel = internal_relocs; irel < irelend; irel++)
6971 {
6972 unsigned long r_type = ELF32_R_TYPE (irel->r_info);
6973 bfd_vma toff, roff;
6974 asection *tsec;
6975 struct one_branch_fixup *f;
6976 size_t insn_offset = 0;
6977 bfd_vma max_branch_offset = 0, val;
6978 bfd_byte *hit_addr;
6979 unsigned long t0;
6980 struct elf_link_hash_entry *h;
6981 struct plt_entry **plist;
6982 unsigned char sym_type;
6983
6984 switch (r_type)
6985 {
6986 case R_PPC_REL24:
6987 case R_PPC_LOCAL24PC:
6988 case R_PPC_PLTREL24:
6989 max_branch_offset = 1 << 25;
6990 break;
6991
6992 case R_PPC_REL14:
6993 case R_PPC_REL14_BRTAKEN:
6994 case R_PPC_REL14_BRNTAKEN:
6995 max_branch_offset = 1 << 15;
6996 break;
6997
6998 case R_PPC_ADDR16_HA:
6999 if (htab->params->pic_fixup > 0)
7000 break;
7001 continue;
7002
7003 default:
7004 continue;
7005 }
7006
7007 /* Get the value of the symbol referred to by the reloc. */
7008 h = NULL;
7009 if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
7010 {
7011 /* A local symbol. */
7012 Elf_Internal_Sym *isym;
7013
7014 /* Read this BFD's local symbols. */
7015 if (isymbuf == NULL)
7016 {
7017 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
7018 if (isymbuf == NULL)
7019 isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
7020 symtab_hdr->sh_info, 0,
7021 NULL, NULL, NULL);
7022 if (isymbuf == 0)
7023 goto error_return;
7024 }
7025 isym = isymbuf + ELF32_R_SYM (irel->r_info);
7026 if (isym->st_shndx == SHN_UNDEF)
7027 tsec = bfd_und_section_ptr;
7028 else if (isym->st_shndx == SHN_ABS)
7029 tsec = bfd_abs_section_ptr;
7030 else if (isym->st_shndx == SHN_COMMON)
7031 tsec = bfd_com_section_ptr;
7032 else
7033 tsec = bfd_section_from_elf_index (abfd, isym->st_shndx);
7034
7035 toff = isym->st_value;
7036 sym_type = ELF_ST_TYPE (isym->st_info);
7037 }
7038 else
7039 {
7040 /* Global symbol handling. */
7041 unsigned long indx;
7042
7043 indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
7044 h = elf_sym_hashes (abfd)[indx];
7045
7046 while (h->root.type == bfd_link_hash_indirect
7047 || h->root.type == bfd_link_hash_warning)
7048 h = (struct elf_link_hash_entry *) h->root.u.i.link;
7049
7050 if (h->root.type == bfd_link_hash_defined
7051 || h->root.type == bfd_link_hash_defweak)
7052 {
7053 tsec = h->root.u.def.section;
7054 toff = h->root.u.def.value;
7055 }
7056 else if (h->root.type == bfd_link_hash_undefined
7057 || h->root.type == bfd_link_hash_undefweak)
7058 {
7059 tsec = bfd_und_section_ptr;
7060 toff = bfd_link_relocatable (link_info) ? indx : 0;
7061 }
7062 else
7063 continue;
7064
7065 /* If this branch is to __tls_get_addr then we may later
7066 optimise away the call. We won't be needing a long-
7067 branch stub in that case. */
7068 if (bfd_link_executable (link_info)
7069 && h == htab->tls_get_addr
7070 && irel != internal_relocs)
7071 {
7072 unsigned long t_symndx = ELF32_R_SYM (irel[-1].r_info);
7073 unsigned long t_rtype = ELF32_R_TYPE (irel[-1].r_info);
7074 unsigned int tls_mask = 0;
7075
7076 /* The previous reloc should be one of R_PPC_TLSGD or
7077 R_PPC_TLSLD, or for older object files, a reloc
7078 on the __tls_get_addr arg setup insn. Get tls
7079 mask bits from the symbol on that reloc. */
7080 if (t_symndx < symtab_hdr->sh_info)
7081 {
7082 bfd_vma *local_got_offsets = elf_local_got_offsets (abfd);
7083
7084 if (local_got_offsets != NULL)
7085 {
7086 struct plt_entry **local_plt = (struct plt_entry **)
7087 (local_got_offsets + symtab_hdr->sh_info);
7088 char *lgot_masks = (char *)
7089 (local_plt + symtab_hdr->sh_info);
7090 tls_mask = lgot_masks[t_symndx];
7091 }
7092 }
7093 else
7094 {
7095 struct elf_link_hash_entry *th
7096 = elf_sym_hashes (abfd)[t_symndx - symtab_hdr->sh_info];
7097
7098 while (th->root.type == bfd_link_hash_indirect
7099 || th->root.type == bfd_link_hash_warning)
7100 th = (struct elf_link_hash_entry *) th->root.u.i.link;
7101
7102 tls_mask
7103 = ((struct ppc_elf_link_hash_entry *) th)->tls_mask;
7104 }
7105
7106 /* The mask bits tell us if the call will be
7107 optimised away. */
7108 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0
7109 && (t_rtype == R_PPC_TLSGD
7110 || t_rtype == R_PPC_GOT_TLSGD16
7111 || t_rtype == R_PPC_GOT_TLSGD16_LO))
7112 continue;
7113 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0
7114 && (t_rtype == R_PPC_TLSLD
7115 || t_rtype == R_PPC_GOT_TLSLD16
7116 || t_rtype == R_PPC_GOT_TLSLD16_LO))
7117 continue;
7118 }
7119
7120 sym_type = h->type;
7121 }
7122
7123 if (r_type == R_PPC_ADDR16_HA)
7124 {
7125 if (h != NULL
7126 && !h->def_regular
7127 && h->protected_def
7128 && ppc_elf_hash_entry (h)->has_addr16_ha
7129 && ppc_elf_hash_entry (h)->has_addr16_lo)
7130 picfixup_size += 12;
7131 continue;
7132 }
7133
7134 /* The condition here under which we call find_plt_ent must
7135 match that in relocate_section. If we call find_plt_ent here
7136 but not in relocate_section, or vice versa, then the branch
7137 destination used here may be incorrect. */
7138 plist = NULL;
7139 if (h != NULL)
7140 {
7141 /* We know is_branch_reloc (r_type) is true. */
7142 if (h->type == STT_GNU_IFUNC
7143 || r_type == R_PPC_PLTREL24)
7144 plist = &h->plt.plist;
7145 }
7146 else if (sym_type == STT_GNU_IFUNC
7147 && elf_local_got_offsets (abfd) != NULL)
7148 {
7149 bfd_vma *local_got_offsets = elf_local_got_offsets (abfd);
7150 struct plt_entry **local_plt = (struct plt_entry **)
7151 (local_got_offsets + symtab_hdr->sh_info);
7152 plist = local_plt + ELF32_R_SYM (irel->r_info);
7153 }
7154 if (plist != NULL)
7155 {
7156 bfd_vma addend = 0;
7157 struct plt_entry *ent;
7158
7159 if (r_type == R_PPC_PLTREL24 && bfd_link_pic (link_info))
7160 addend = irel->r_addend;
7161 ent = find_plt_ent (plist, got2, addend);
7162 if (ent != NULL)
7163 {
7164 if (htab->plt_type == PLT_NEW
7165 || h == NULL
7166 || !htab->elf.dynamic_sections_created
7167 || h->dynindx == -1)
7168 {
7169 tsec = htab->glink;
7170 toff = ent->glink_offset;
7171 }
7172 else
7173 {
7174 tsec = htab->plt;
7175 toff = ent->plt.offset;
7176 }
7177 }
7178 }
7179
7180 /* If the branch and target are in the same section, you have
7181 no hope of adding stubs. We'll error out later should the
7182 branch overflow. */
7183 if (tsec == isec)
7184 continue;
7185
7186 /* There probably isn't any reason to handle symbols in
7187 SEC_MERGE sections; SEC_MERGE doesn't seem a likely
7188 attribute for a code section, and we are only looking at
7189 branches. However, implement it correctly here as a
7190 reference for other target relax_section functions. */
7191 if (0 && tsec->sec_info_type == SEC_INFO_TYPE_MERGE)
7192 {
7193 /* At this stage in linking, no SEC_MERGE symbol has been
7194 adjusted, so all references to such symbols need to be
7195 passed through _bfd_merged_section_offset. (Later, in
7196 relocate_section, all SEC_MERGE symbols *except* for
7197 section symbols have been adjusted.)
7198
7199 gas may reduce relocations against symbols in SEC_MERGE
7200 sections to a relocation against the section symbol when
7201 the original addend was zero. When the reloc is against
7202 a section symbol we should include the addend in the
7203 offset passed to _bfd_merged_section_offset, since the
7204 location of interest is the original symbol. On the
7205 other hand, an access to "sym+addend" where "sym" is not
7206 a section symbol should not include the addend; Such an
7207 access is presumed to be an offset from "sym"; The
7208 location of interest is just "sym". */
7209 if (sym_type == STT_SECTION)
7210 toff += irel->r_addend;
7211
7212 toff
7213 = _bfd_merged_section_offset (abfd, &tsec,
7214 elf_section_data (tsec)->sec_info,
7215 toff);
7216
7217 if (sym_type != STT_SECTION)
7218 toff += irel->r_addend;
7219 }
7220 /* PLTREL24 addends are special. */
7221 else if (r_type != R_PPC_PLTREL24)
7222 toff += irel->r_addend;
7223
7224 /* Attempted -shared link of non-pic code loses. */
7225 if ((!bfd_link_relocatable (link_info)
7226 && tsec == bfd_und_section_ptr)
7227 || tsec->output_section == NULL
7228 || (tsec->owner != NULL
7229 && (tsec->owner->flags & BFD_PLUGIN) != 0))
7230 continue;
7231
7232 roff = irel->r_offset;
7233
7234 /* If the branch is in range, no need to do anything. */
7235 if (tsec != bfd_und_section_ptr
7236 && (!bfd_link_relocatable (link_info)
7237 /* A relocatable link may have sections moved during
7238 final link, so do not presume they remain in range. */
7239 || tsec->output_section == isec->output_section))
7240 {
7241 bfd_vma symaddr, reladdr;
7242
7243 symaddr = tsec->output_section->vma + tsec->output_offset + toff;
7244 reladdr = isec->output_section->vma + isec->output_offset + roff;
7245 if (symaddr - reladdr + max_branch_offset
7246 < 2 * max_branch_offset)
7247 continue;
7248 }
7249
7250 /* Look for an existing fixup to this address. */
7251 for (f = branch_fixups; f ; f = f->next)
7252 if (f->tsec == tsec && f->toff == toff)
7253 break;
7254
7255 if (f == NULL)
7256 {
7257 size_t size;
7258 unsigned long stub_rtype;
7259
7260 val = trampoff - roff;
7261 if (val >= max_branch_offset)
7262 /* Oh dear, we can't reach a trampoline. Don't try to add
7263 one. We'll report an error later. */
7264 continue;
7265
7266 if (bfd_link_pic (link_info))
7267 {
7268 size = 4 * ARRAY_SIZE (shared_stub_entry);
7269 insn_offset = 12;
7270 }
7271 else
7272 {
7273 size = 4 * ARRAY_SIZE (stub_entry);
7274 insn_offset = 0;
7275 }
7276 stub_rtype = R_PPC_RELAX;
7277 if (tsec == htab->plt
7278 || tsec == htab->glink)
7279 {
7280 stub_rtype = R_PPC_RELAX_PLT;
7281 if (r_type == R_PPC_PLTREL24)
7282 stub_rtype = R_PPC_RELAX_PLTREL24;
7283 }
7284
7285 /* Hijack the old relocation. Since we need two
7286 relocations for this use a "composite" reloc. */
7287 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
7288 stub_rtype);
7289 irel->r_offset = trampoff + insn_offset;
7290 if (r_type == R_PPC_PLTREL24
7291 && stub_rtype != R_PPC_RELAX_PLTREL24)
7292 irel->r_addend = 0;
7293
7294 /* Record the fixup so we don't do it again this section. */
7295 f = bfd_malloc (sizeof (*f));
7296 f->next = branch_fixups;
7297 f->tsec = tsec;
7298 f->toff = toff;
7299 f->trampoff = trampoff;
7300 branch_fixups = f;
7301
7302 trampoff += size;
7303 changes++;
7304 }
7305 else
7306 {
7307 val = f->trampoff - roff;
7308 if (val >= max_branch_offset)
7309 continue;
7310
7311 /* Nop out the reloc, since we're finalizing things here. */
7312 irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
7313 }
7314
7315 /* Get the section contents. */
7316 if (contents == NULL)
7317 {
7318 /* Get cached copy if it exists. */
7319 if (elf_section_data (isec)->this_hdr.contents != NULL)
7320 contents = elf_section_data (isec)->this_hdr.contents;
7321 /* Go get them off disk. */
7322 else if (!bfd_malloc_and_get_section (abfd, isec, &contents))
7323 goto error_return;
7324 }
7325
7326 /* Fix up the existing branch to hit the trampoline. */
7327 hit_addr = contents + roff;
7328 switch (r_type)
7329 {
7330 case R_PPC_REL24:
7331 case R_PPC_LOCAL24PC:
7332 case R_PPC_PLTREL24:
7333 t0 = bfd_get_32 (abfd, hit_addr);
7334 t0 &= ~0x3fffffc;
7335 t0 |= val & 0x3fffffc;
7336 bfd_put_32 (abfd, t0, hit_addr);
7337 break;
7338
7339 case R_PPC_REL14:
7340 case R_PPC_REL14_BRTAKEN:
7341 case R_PPC_REL14_BRNTAKEN:
7342 t0 = bfd_get_32 (abfd, hit_addr);
7343 t0 &= ~0xfffc;
7344 t0 |= val & 0xfffc;
7345 bfd_put_32 (abfd, t0, hit_addr);
7346 break;
7347 }
7348 }
7349
7350 while (branch_fixups != NULL)
7351 {
7352 struct one_branch_fixup *f = branch_fixups;
7353 branch_fixups = branch_fixups->next;
7354 free (f);
7355 }
7356 }
7357
7358 workaround_change = FALSE;
7359 newsize = trampoff;
7360 if (htab->params->ppc476_workaround
7361 && (!bfd_link_relocatable (link_info)
7362 || isec->output_section->alignment_power >= htab->params->pagesize_p2))
7363 {
7364 bfd_vma addr, end_addr;
7365 unsigned int crossings;
7366 bfd_vma pagesize = (bfd_vma) 1 << htab->params->pagesize_p2;
7367
7368 addr = isec->output_section->vma + isec->output_offset;
7369 end_addr = addr + trampoff;
7370 addr &= -pagesize;
7371 crossings = ((end_addr & -pagesize) - addr) >> htab->params->pagesize_p2;
7372 if (crossings != 0)
7373 {
7374 /* Keep space aligned, to ensure the patch code itself does
7375 not cross a page. Don't decrease size calculated on a
7376 previous pass as otherwise we might never settle on a layout. */
7377 newsize = 15 - ((end_addr - 1) & 15);
7378 newsize += crossings * 16;
7379 if (relax_info->workaround_size < newsize)
7380 {
7381 relax_info->workaround_size = newsize;
7382 workaround_change = TRUE;
7383 }
7384 /* Ensure relocate_section is called. */
7385 isec->flags |= SEC_RELOC;
7386 }
7387 newsize = trampoff + relax_info->workaround_size;
7388 }
7389
7390 if (htab->params->pic_fixup > 0)
7391 {
7392 picfixup_size -= relax_info->picfixup_size;
7393 if (picfixup_size != 0)
7394 relax_info->picfixup_size += picfixup_size;
7395 newsize += relax_info->picfixup_size;
7396 }
7397
7398 if (changes != 0 || picfixup_size != 0 || workaround_change)
7399 isec->size = newsize;
7400
7401 if (isymbuf != NULL
7402 && symtab_hdr->contents != (unsigned char *) isymbuf)
7403 {
7404 if (! link_info->keep_memory)
7405 free (isymbuf);
7406 else
7407 {
7408 /* Cache the symbols for elf_link_input_bfd. */
7409 symtab_hdr->contents = (unsigned char *) isymbuf;
7410 }
7411 }
7412
7413 if (contents != NULL
7414 && elf_section_data (isec)->this_hdr.contents != contents)
7415 {
7416 if (!changes && !link_info->keep_memory)
7417 free (contents);
7418 else
7419 {
7420 /* Cache the section contents for elf_link_input_bfd. */
7421 elf_section_data (isec)->this_hdr.contents = contents;
7422 }
7423 }
7424
7425 changes += picfixup_size;
7426 if (changes != 0)
7427 {
7428 /* Append sufficient NOP relocs so we can write out relocation
7429 information for the trampolines. */
7430 Elf_Internal_Shdr *rel_hdr;
7431 Elf_Internal_Rela *new_relocs = bfd_malloc ((changes + isec->reloc_count)
7432 * sizeof (*new_relocs));
7433 unsigned ix;
7434
7435 if (!new_relocs)
7436 goto error_return;
7437 memcpy (new_relocs, internal_relocs,
7438 isec->reloc_count * sizeof (*new_relocs));
7439 for (ix = changes; ix--;)
7440 {
7441 irel = new_relocs + ix + isec->reloc_count;
7442
7443 irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
7444 }
7445 if (internal_relocs != elf_section_data (isec)->relocs)
7446 free (internal_relocs);
7447 elf_section_data (isec)->relocs = new_relocs;
7448 isec->reloc_count += changes;
7449 rel_hdr = _bfd_elf_single_rel_hdr (isec);
7450 rel_hdr->sh_size += changes * rel_hdr->sh_entsize;
7451 }
7452 else if (internal_relocs != NULL
7453 && elf_section_data (isec)->relocs != internal_relocs)
7454 free (internal_relocs);
7455
7456 *again = changes != 0 || workaround_change;
7457 return TRUE;
7458
7459 error_return:
7460 while (branch_fixups != NULL)
7461 {
7462 struct one_branch_fixup *f = branch_fixups;
7463 branch_fixups = branch_fixups->next;
7464 free (f);
7465 }
7466 if (isymbuf != NULL && (unsigned char *) isymbuf != symtab_hdr->contents)
7467 free (isymbuf);
7468 if (contents != NULL
7469 && elf_section_data (isec)->this_hdr.contents != contents)
7470 free (contents);
7471 if (internal_relocs != NULL
7472 && elf_section_data (isec)->relocs != internal_relocs)
7473 free (internal_relocs);
7474 return FALSE;
7475 }
7476 \f
7477 /* What to do when ld finds relocations against symbols defined in
7478 discarded sections. */
7479
7480 static unsigned int
7481 ppc_elf_action_discarded (asection *sec)
7482 {
7483 if (strcmp (".fixup", sec->name) == 0)
7484 return 0;
7485
7486 if (strcmp (".got2", sec->name) == 0)
7487 return 0;
7488
7489 return _bfd_elf_default_action_discarded (sec);
7490 }
7491 \f
7492 /* Fill in the address for a pointer generated in a linker section. */
7493
7494 static bfd_vma
7495 elf_finish_pointer_linker_section (bfd *input_bfd,
7496 elf_linker_section_t *lsect,
7497 struct elf_link_hash_entry *h,
7498 bfd_vma relocation,
7499 const Elf_Internal_Rela *rel)
7500 {
7501 elf_linker_section_pointers_t *linker_section_ptr;
7502
7503 BFD_ASSERT (lsect != NULL);
7504
7505 if (h != NULL)
7506 {
7507 /* Handle global symbol. */
7508 struct ppc_elf_link_hash_entry *eh;
7509
7510 eh = (struct ppc_elf_link_hash_entry *) h;
7511 BFD_ASSERT (eh->elf.def_regular);
7512 linker_section_ptr = eh->linker_section_pointer;
7513 }
7514 else
7515 {
7516 /* Handle local symbol. */
7517 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
7518
7519 BFD_ASSERT (is_ppc_elf (input_bfd));
7520 BFD_ASSERT (elf_local_ptr_offsets (input_bfd) != NULL);
7521 linker_section_ptr = elf_local_ptr_offsets (input_bfd)[r_symndx];
7522 }
7523
7524 linker_section_ptr = elf_find_pointer_linker_section (linker_section_ptr,
7525 rel->r_addend,
7526 lsect);
7527 BFD_ASSERT (linker_section_ptr != NULL);
7528
7529 /* Offset will always be a multiple of four, so use the bottom bit
7530 as a "written" flag. */
7531 if ((linker_section_ptr->offset & 1) == 0)
7532 {
7533 bfd_put_32 (lsect->section->owner,
7534 relocation + linker_section_ptr->addend,
7535 lsect->section->contents + linker_section_ptr->offset);
7536 linker_section_ptr->offset += 1;
7537 }
7538
7539 relocation = (lsect->section->output_section->vma
7540 + lsect->section->output_offset
7541 + linker_section_ptr->offset - 1
7542 - SYM_VAL (lsect->sym));
7543
7544 #ifdef DEBUG
7545 fprintf (stderr,
7546 "Finish pointer in linker section %s, offset = %ld (0x%lx)\n",
7547 lsect->name, (long) relocation, (long) relocation);
7548 #endif
7549
7550 return relocation;
7551 }
7552
7553 #define PPC_LO(v) ((v) & 0xffff)
7554 #define PPC_HI(v) (((v) >> 16) & 0xffff)
7555 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
7556
7557 static void
7558 write_glink_stub (struct plt_entry *ent, asection *plt_sec, unsigned char *p,
7559 struct bfd_link_info *info)
7560 {
7561 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
7562 bfd *output_bfd = info->output_bfd;
7563 bfd_vma plt;
7564
7565 plt = ((ent->plt.offset & ~1)
7566 + plt_sec->output_section->vma
7567 + plt_sec->output_offset);
7568
7569 if (bfd_link_pic (info))
7570 {
7571 bfd_vma got = 0;
7572
7573 if (ent->addend >= 32768)
7574 got = (ent->addend
7575 + ent->sec->output_section->vma
7576 + ent->sec->output_offset);
7577 else if (htab->elf.hgot != NULL)
7578 got = SYM_VAL (htab->elf.hgot);
7579
7580 plt -= got;
7581
7582 if (plt + 0x8000 < 0x10000)
7583 {
7584 bfd_put_32 (output_bfd, LWZ_11_30 + PPC_LO (plt), p);
7585 p += 4;
7586 bfd_put_32 (output_bfd, MTCTR_11, p);
7587 p += 4;
7588 bfd_put_32 (output_bfd, BCTR, p);
7589 p += 4;
7590 bfd_put_32 (output_bfd, htab->params->ppc476_workaround ? BA : NOP, p);
7591 p += 4;
7592 }
7593 else
7594 {
7595 bfd_put_32 (output_bfd, ADDIS_11_30 + PPC_HA (plt), p);
7596 p += 4;
7597 bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
7598 p += 4;
7599 bfd_put_32 (output_bfd, MTCTR_11, p);
7600 p += 4;
7601 bfd_put_32 (output_bfd, BCTR, p);
7602 p += 4;
7603 }
7604 }
7605 else
7606 {
7607 bfd_put_32 (output_bfd, LIS_11 + PPC_HA (plt), p);
7608 p += 4;
7609 bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
7610 p += 4;
7611 bfd_put_32 (output_bfd, MTCTR_11, p);
7612 p += 4;
7613 bfd_put_32 (output_bfd, BCTR, p);
7614 p += 4;
7615 }
7616 }
7617
7618 /* Return true if symbol is defined statically. */
7619
7620 static bfd_boolean
7621 is_static_defined (struct elf_link_hash_entry *h)
7622 {
7623 return ((h->root.type == bfd_link_hash_defined
7624 || h->root.type == bfd_link_hash_defweak)
7625 && h->root.u.def.section != NULL
7626 && h->root.u.def.section->output_section != NULL);
7627 }
7628
7629 /* If INSN is an opcode that may be used with an @tls operand, return
7630 the transformed insn for TLS optimisation, otherwise return 0. If
7631 REG is non-zero only match an insn with RB or RA equal to REG. */
7632
7633 unsigned int
7634 _bfd_elf_ppc_at_tls_transform (unsigned int insn, unsigned int reg)
7635 {
7636 unsigned int rtra;
7637
7638 if ((insn & (0x3f << 26)) != 31 << 26)
7639 return 0;
7640
7641 if (reg == 0 || ((insn >> 11) & 0x1f) == reg)
7642 rtra = insn & ((1 << 26) - (1 << 16));
7643 else if (((insn >> 16) & 0x1f) == reg)
7644 rtra = (insn & (0x1f << 21)) | ((insn & (0x1f << 11)) << 5);
7645 else
7646 return 0;
7647
7648 if ((insn & (0x3ff << 1)) == 266 << 1)
7649 /* add -> addi. */
7650 insn = 14 << 26;
7651 else if ((insn & (0x1f << 1)) == 23 << 1
7652 && ((insn & (0x1f << 6)) < 14 << 6
7653 || ((insn & (0x1f << 6)) >= 16 << 6
7654 && (insn & (0x1f << 6)) < 24 << 6)))
7655 /* load and store indexed -> dform. */
7656 insn = (32 | ((insn >> 6) & 0x1f)) << 26;
7657 else if ((insn & (((0x1a << 5) | 0x1f) << 1)) == 21 << 1)
7658 /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
7659 insn = ((58 | ((insn >> 6) & 4)) << 26) | ((insn >> 6) & 1);
7660 else if ((insn & (((0x1f << 5) | 0x1f) << 1)) == 341 << 1)
7661 /* lwax -> lwa. */
7662 insn = (58 << 26) | 2;
7663 else
7664 return 0;
7665 insn |= rtra;
7666 return insn;
7667 }
7668
7669 /* If INSN is an opcode that may be used with an @tprel operand, return
7670 the transformed insn for an undefined weak symbol, ie. with the
7671 thread pointer REG operand removed. Otherwise return 0. */
7672
7673 unsigned int
7674 _bfd_elf_ppc_at_tprel_transform (unsigned int insn, unsigned int reg)
7675 {
7676 if ((insn & (0x1f << 16)) == reg << 16
7677 && ((insn & (0x3f << 26)) == 14u << 26 /* addi */
7678 || (insn & (0x3f << 26)) == 15u << 26 /* addis */
7679 || (insn & (0x3f << 26)) == 32u << 26 /* lwz */
7680 || (insn & (0x3f << 26)) == 34u << 26 /* lbz */
7681 || (insn & (0x3f << 26)) == 36u << 26 /* stw */
7682 || (insn & (0x3f << 26)) == 38u << 26 /* stb */
7683 || (insn & (0x3f << 26)) == 40u << 26 /* lhz */
7684 || (insn & (0x3f << 26)) == 42u << 26 /* lha */
7685 || (insn & (0x3f << 26)) == 44u << 26 /* sth */
7686 || (insn & (0x3f << 26)) == 46u << 26 /* lmw */
7687 || (insn & (0x3f << 26)) == 47u << 26 /* stmw */
7688 || (insn & (0x3f << 26)) == 48u << 26 /* lfs */
7689 || (insn & (0x3f << 26)) == 50u << 26 /* lfd */
7690 || (insn & (0x3f << 26)) == 52u << 26 /* stfs */
7691 || (insn & (0x3f << 26)) == 54u << 26 /* stfd */
7692 || ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
7693 && (insn & 3) != 1)
7694 || ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */
7695 && ((insn & 3) == 0 || (insn & 3) == 3))))
7696 {
7697 insn &= ~(0x1f << 16);
7698 }
7699 else if ((insn & (0x1f << 21)) == reg << 21
7700 && ((insn & (0x3e << 26)) == 24u << 26 /* ori, oris */
7701 || (insn & (0x3e << 26)) == 26u << 26 /* xori,xoris */
7702 || (insn & (0x3e << 26)) == 28u << 26 /* andi,andis */))
7703 {
7704 insn &= ~(0x1f << 21);
7705 insn |= (insn & (0x1f << 16)) << 5;
7706 if ((insn & (0x3e << 26)) == 26 << 26 /* xori,xoris */)
7707 insn -= 2 >> 26; /* convert to ori,oris */
7708 }
7709 else
7710 insn = 0;
7711 return insn;
7712 }
7713
7714 static bfd_boolean
7715 is_insn_ds_form (unsigned int insn)
7716 {
7717 return ((insn & (0x3f << 26)) == 58u << 26 /* ld,ldu,lwa */
7718 || (insn & (0x3f << 26)) == 62u << 26 /* std,stdu,stq */
7719 || (insn & (0x3f << 26)) == 57u << 26 /* lfdp */
7720 || (insn & (0x3f << 26)) == 61u << 26 /* stfdp */);
7721 }
7722
7723 static bfd_boolean
7724 is_insn_dq_form (unsigned int insn)
7725 {
7726 return ((insn & (0x3f << 26)) == 56u << 26 /* lq */
7727 || ((insn & (0x3f << 26)) == (61u << 26) /* lxv, stxv */
7728 && (insn & 3) == 1));
7729 }
7730
7731 /* The RELOCATE_SECTION function is called by the ELF backend linker
7732 to handle the relocations for a section.
7733
7734 The relocs are always passed as Rela structures; if the section
7735 actually uses Rel structures, the r_addend field will always be
7736 zero.
7737
7738 This function is responsible for adjust the section contents as
7739 necessary, and (if using Rela relocs and generating a
7740 relocatable output file) adjusting the reloc addend as
7741 necessary.
7742
7743 This function does not have to worry about setting the reloc
7744 address or the reloc symbol index.
7745
7746 LOCAL_SYMS is a pointer to the swapped in local symbols.
7747
7748 LOCAL_SECTIONS is an array giving the section in the input file
7749 corresponding to the st_shndx field of each local symbol.
7750
7751 The global hash table entry for the global symbols can be found
7752 via elf_sym_hashes (input_bfd).
7753
7754 When generating relocatable output, this function must handle
7755 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
7756 going to be the section symbol corresponding to the output
7757 section, which means that the addend must be adjusted
7758 accordingly. */
7759
7760 static bfd_boolean
7761 ppc_elf_relocate_section (bfd *output_bfd,
7762 struct bfd_link_info *info,
7763 bfd *input_bfd,
7764 asection *input_section,
7765 bfd_byte *contents,
7766 Elf_Internal_Rela *relocs,
7767 Elf_Internal_Sym *local_syms,
7768 asection **local_sections)
7769 {
7770 Elf_Internal_Shdr *symtab_hdr;
7771 struct elf_link_hash_entry **sym_hashes;
7772 struct ppc_elf_link_hash_table *htab;
7773 Elf_Internal_Rela *rel;
7774 Elf_Internal_Rela *wrel;
7775 Elf_Internal_Rela *relend;
7776 Elf_Internal_Rela outrel;
7777 asection *got2;
7778 bfd_vma *local_got_offsets;
7779 bfd_boolean ret = TRUE;
7780 bfd_vma d_offset = (bfd_big_endian (output_bfd) ? 2 : 0);
7781 bfd_boolean is_vxworks_tls;
7782 unsigned int picfixup_size = 0;
7783 struct ppc_elf_relax_info *relax_info = NULL;
7784
7785 #ifdef DEBUG
7786 _bfd_error_handler ("ppc_elf_relocate_section called for %B section %A, "
7787 "%ld relocations%s",
7788 input_bfd, input_section,
7789 (long) input_section->reloc_count,
7790 (bfd_link_relocatable (info)) ? " (relocatable)" : "");
7791 #endif
7792
7793 got2 = bfd_get_section_by_name (input_bfd, ".got2");
7794
7795 /* Initialize howto table if not already done. */
7796 if (!ppc_elf_howto_table[R_PPC_ADDR32])
7797 ppc_elf_howto_init ();
7798
7799 htab = ppc_elf_hash_table (info);
7800 local_got_offsets = elf_local_got_offsets (input_bfd);
7801 symtab_hdr = &elf_symtab_hdr (input_bfd);
7802 sym_hashes = elf_sym_hashes (input_bfd);
7803 /* We have to handle relocations in vxworks .tls_vars sections
7804 specially, because the dynamic loader is 'weird'. */
7805 is_vxworks_tls = (htab->is_vxworks && bfd_link_pic (info)
7806 && !strcmp (input_section->output_section->name,
7807 ".tls_vars"));
7808 if (input_section->sec_info_type == SEC_INFO_TYPE_TARGET)
7809 relax_info = elf_section_data (input_section)->sec_info;
7810 rel = wrel = relocs;
7811 relend = relocs + input_section->reloc_count;
7812 for (; rel < relend; wrel++, rel++)
7813 {
7814 enum elf_ppc_reloc_type r_type;
7815 bfd_vma addend;
7816 bfd_reloc_status_type r;
7817 Elf_Internal_Sym *sym;
7818 asection *sec;
7819 struct elf_link_hash_entry *h;
7820 const char *sym_name;
7821 reloc_howto_type *howto;
7822 unsigned long r_symndx;
7823 bfd_vma relocation;
7824 bfd_vma branch_bit, from;
7825 bfd_boolean unresolved_reloc;
7826 bfd_boolean warned;
7827 unsigned int tls_type, tls_mask, tls_gd;
7828 struct plt_entry **ifunc;
7829 struct reloc_howto_struct alt_howto;
7830
7831 again:
7832 r_type = ELF32_R_TYPE (rel->r_info);
7833 sym = NULL;
7834 sec = NULL;
7835 h = NULL;
7836 unresolved_reloc = FALSE;
7837 warned = FALSE;
7838 r_symndx = ELF32_R_SYM (rel->r_info);
7839
7840 if (r_symndx < symtab_hdr->sh_info)
7841 {
7842 sym = local_syms + r_symndx;
7843 sec = local_sections[r_symndx];
7844 sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
7845
7846 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
7847 }
7848 else
7849 {
7850 bfd_boolean ignored;
7851
7852 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
7853 r_symndx, symtab_hdr, sym_hashes,
7854 h, sec, relocation,
7855 unresolved_reloc, warned, ignored);
7856
7857 sym_name = h->root.root.string;
7858 }
7859
7860 if (sec != NULL && discarded_section (sec))
7861 {
7862 /* For relocs against symbols from removed linkonce sections,
7863 or sections discarded by a linker script, we just want the
7864 section contents zeroed. Avoid any special processing. */
7865 howto = NULL;
7866 if (r_type < R_PPC_max)
7867 howto = ppc_elf_howto_table[r_type];
7868
7869 _bfd_clear_contents (howto, input_bfd, input_section,
7870 contents + rel->r_offset);
7871 wrel->r_offset = rel->r_offset;
7872 wrel->r_info = 0;
7873 wrel->r_addend = 0;
7874
7875 /* For ld -r, remove relocations in debug sections against
7876 sections defined in discarded sections. Not done for
7877 non-debug to preserve relocs in .eh_frame which the
7878 eh_frame editing code expects to be present. */
7879 if (bfd_link_relocatable (info)
7880 && (input_section->flags & SEC_DEBUGGING))
7881 wrel--;
7882
7883 continue;
7884 }
7885
7886 if (bfd_link_relocatable (info))
7887 {
7888 if (got2 != NULL
7889 && r_type == R_PPC_PLTREL24
7890 && rel->r_addend != 0)
7891 {
7892 /* R_PPC_PLTREL24 is rather special. If non-zero, the
7893 addend specifies the GOT pointer offset within .got2. */
7894 rel->r_addend += got2->output_offset;
7895 }
7896 if (r_type != R_PPC_RELAX_PLT
7897 && r_type != R_PPC_RELAX_PLTREL24
7898 && r_type != R_PPC_RELAX)
7899 goto copy_reloc;
7900 }
7901
7902 /* TLS optimizations. Replace instruction sequences and relocs
7903 based on information we collected in tls_optimize. We edit
7904 RELOCS so that --emit-relocs will output something sensible
7905 for the final instruction stream. */
7906 tls_mask = 0;
7907 tls_gd = 0;
7908 if (h != NULL)
7909 tls_mask = ((struct ppc_elf_link_hash_entry *) h)->tls_mask;
7910 else if (local_got_offsets != NULL)
7911 {
7912 struct plt_entry **local_plt;
7913 char *lgot_masks;
7914 local_plt
7915 = (struct plt_entry **) (local_got_offsets + symtab_hdr->sh_info);
7916 lgot_masks = (char *) (local_plt + symtab_hdr->sh_info);
7917 tls_mask = lgot_masks[r_symndx];
7918 }
7919
7920 /* Ensure reloc mapping code below stays sane. */
7921 if ((R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TLSGD16 & 3)
7922 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TLSGD16_LO & 3)
7923 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TLSGD16_HI & 3)
7924 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TLSGD16_HA & 3)
7925 || (R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TPREL16 & 3)
7926 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TPREL16_LO & 3)
7927 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TPREL16_HI & 3)
7928 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TPREL16_HA & 3))
7929 abort ();
7930 switch (r_type)
7931 {
7932 default:
7933 break;
7934
7935 case R_PPC_GOT_TPREL16:
7936 case R_PPC_GOT_TPREL16_LO:
7937 if ((tls_mask & TLS_TLS) != 0
7938 && (tls_mask & TLS_TPREL) == 0)
7939 {
7940 bfd_vma insn;
7941
7942 insn = bfd_get_32 (output_bfd,
7943 contents + rel->r_offset - d_offset);
7944 insn &= 31 << 21;
7945 insn |= 0x3c020000; /* addis 0,2,0 */
7946 bfd_put_32 (output_bfd, insn,
7947 contents + rel->r_offset - d_offset);
7948 r_type = R_PPC_TPREL16_HA;
7949 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7950 }
7951 break;
7952
7953 case R_PPC_TLS:
7954 if ((tls_mask & TLS_TLS) != 0
7955 && (tls_mask & TLS_TPREL) == 0)
7956 {
7957 bfd_vma insn;
7958
7959 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
7960 insn = _bfd_elf_ppc_at_tls_transform (insn, 2);
7961 if (insn == 0)
7962 abort ();
7963 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
7964 r_type = R_PPC_TPREL16_LO;
7965 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7966
7967 /* Was PPC_TLS which sits on insn boundary, now
7968 PPC_TPREL16_LO which is at low-order half-word. */
7969 rel->r_offset += d_offset;
7970 }
7971 break;
7972
7973 case R_PPC_GOT_TLSGD16_HI:
7974 case R_PPC_GOT_TLSGD16_HA:
7975 tls_gd = TLS_TPRELGD;
7976 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
7977 goto tls_gdld_hi;
7978 break;
7979
7980 case R_PPC_GOT_TLSLD16_HI:
7981 case R_PPC_GOT_TLSLD16_HA:
7982 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
7983 {
7984 tls_gdld_hi:
7985 if ((tls_mask & tls_gd) != 0)
7986 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
7987 + R_PPC_GOT_TPREL16);
7988 else
7989 {
7990 rel->r_offset -= d_offset;
7991 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
7992 r_type = R_PPC_NONE;
7993 }
7994 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7995 }
7996 break;
7997
7998 case R_PPC_GOT_TLSGD16:
7999 case R_PPC_GOT_TLSGD16_LO:
8000 tls_gd = TLS_TPRELGD;
8001 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
8002 goto tls_ldgd_opt;
8003 break;
8004
8005 case R_PPC_GOT_TLSLD16:
8006 case R_PPC_GOT_TLSLD16_LO:
8007 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
8008 {
8009 unsigned int insn1, insn2;
8010 bfd_vma offset;
8011
8012 tls_ldgd_opt:
8013 offset = (bfd_vma) -1;
8014 /* If not using the newer R_PPC_TLSGD/LD to mark
8015 __tls_get_addr calls, we must trust that the call
8016 stays with its arg setup insns, ie. that the next
8017 reloc is the __tls_get_addr call associated with
8018 the current reloc. Edit both insns. */
8019 if (input_section->has_tls_get_addr_call
8020 && rel + 1 < relend
8021 && branch_reloc_hash_match (input_bfd, rel + 1,
8022 htab->tls_get_addr))
8023 offset = rel[1].r_offset;
8024 /* We read the low GOT_TLS insn because we need to keep
8025 the destination reg. It may be something other than
8026 the usual r3, and moved to r3 before the call by
8027 intervening code. */
8028 insn1 = bfd_get_32 (output_bfd,
8029 contents + rel->r_offset - d_offset);
8030 if ((tls_mask & tls_gd) != 0)
8031 {
8032 /* IE */
8033 insn1 &= (0x1f << 21) | (0x1f << 16);
8034 insn1 |= 32 << 26; /* lwz */
8035 if (offset != (bfd_vma) -1)
8036 {
8037 rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
8038 insn2 = 0x7c631214; /* add 3,3,2 */
8039 bfd_put_32 (output_bfd, insn2, contents + offset);
8040 }
8041 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
8042 + R_PPC_GOT_TPREL16);
8043 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
8044 }
8045 else
8046 {
8047 /* LE */
8048 insn1 &= 0x1f << 21;
8049 insn1 |= 0x3c020000; /* addis r,2,0 */
8050 if (tls_gd == 0)
8051 {
8052 /* Was an LD reloc. */
8053 for (r_symndx = 0;
8054 r_symndx < symtab_hdr->sh_info;
8055 r_symndx++)
8056 if (local_sections[r_symndx] == sec)
8057 break;
8058 if (r_symndx >= symtab_hdr->sh_info)
8059 r_symndx = STN_UNDEF;
8060 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
8061 if (r_symndx != STN_UNDEF)
8062 rel->r_addend -= (local_syms[r_symndx].st_value
8063 + sec->output_offset
8064 + sec->output_section->vma);
8065 }
8066 r_type = R_PPC_TPREL16_HA;
8067 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
8068 if (offset != (bfd_vma) -1)
8069 {
8070 rel[1].r_info = ELF32_R_INFO (r_symndx, R_PPC_TPREL16_LO);
8071 rel[1].r_offset = offset + d_offset;
8072 rel[1].r_addend = rel->r_addend;
8073 insn2 = 0x38630000; /* addi 3,3,0 */
8074 bfd_put_32 (output_bfd, insn2, contents + offset);
8075 }
8076 }
8077 bfd_put_32 (output_bfd, insn1,
8078 contents + rel->r_offset - d_offset);
8079 if (tls_gd == 0)
8080 {
8081 /* We changed the symbol on an LD reloc. Start over
8082 in order to get h, sym, sec etc. right. */
8083 goto again;
8084 }
8085 }
8086 break;
8087
8088 case R_PPC_TLSGD:
8089 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
8090 {
8091 unsigned int insn2;
8092 bfd_vma offset = rel->r_offset;
8093
8094 if ((tls_mask & TLS_TPRELGD) != 0)
8095 {
8096 /* IE */
8097 r_type = R_PPC_NONE;
8098 insn2 = 0x7c631214; /* add 3,3,2 */
8099 }
8100 else
8101 {
8102 /* LE */
8103 r_type = R_PPC_TPREL16_LO;
8104 rel->r_offset += d_offset;
8105 insn2 = 0x38630000; /* addi 3,3,0 */
8106 }
8107 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
8108 bfd_put_32 (output_bfd, insn2, contents + offset);
8109 /* Zap the reloc on the _tls_get_addr call too. */
8110 BFD_ASSERT (offset == rel[1].r_offset);
8111 rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
8112 }
8113 break;
8114
8115 case R_PPC_TLSLD:
8116 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
8117 {
8118 unsigned int insn2;
8119
8120 for (r_symndx = 0;
8121 r_symndx < symtab_hdr->sh_info;
8122 r_symndx++)
8123 if (local_sections[r_symndx] == sec)
8124 break;
8125 if (r_symndx >= symtab_hdr->sh_info)
8126 r_symndx = STN_UNDEF;
8127 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
8128 if (r_symndx != STN_UNDEF)
8129 rel->r_addend -= (local_syms[r_symndx].st_value
8130 + sec->output_offset
8131 + sec->output_section->vma);
8132
8133 rel->r_info = ELF32_R_INFO (r_symndx, R_PPC_TPREL16_LO);
8134 rel->r_offset += d_offset;
8135 insn2 = 0x38630000; /* addi 3,3,0 */
8136 bfd_put_32 (output_bfd, insn2,
8137 contents + rel->r_offset - d_offset);
8138 /* Zap the reloc on the _tls_get_addr call too. */
8139 BFD_ASSERT (rel->r_offset - d_offset == rel[1].r_offset);
8140 rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
8141 goto again;
8142 }
8143 break;
8144 }
8145
8146 /* Handle other relocations that tweak non-addend part of insn. */
8147 branch_bit = 0;
8148 switch (r_type)
8149 {
8150 default:
8151 break;
8152
8153 /* Branch taken prediction relocations. */
8154 case R_PPC_ADDR14_BRTAKEN:
8155 case R_PPC_REL14_BRTAKEN:
8156 branch_bit = BRANCH_PREDICT_BIT;
8157 /* Fall thru */
8158
8159 /* Branch not taken prediction relocations. */
8160 case R_PPC_ADDR14_BRNTAKEN:
8161 case R_PPC_REL14_BRNTAKEN:
8162 {
8163 bfd_vma insn;
8164
8165 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
8166 insn &= ~BRANCH_PREDICT_BIT;
8167 insn |= branch_bit;
8168
8169 from = (rel->r_offset
8170 + input_section->output_offset
8171 + input_section->output_section->vma);
8172
8173 /* Invert 'y' bit if not the default. */
8174 if ((bfd_signed_vma) (relocation + rel->r_addend - from) < 0)
8175 insn ^= BRANCH_PREDICT_BIT;
8176
8177 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
8178 break;
8179 }
8180 }
8181
8182 if (ELIMINATE_COPY_RELOCS
8183 && h != NULL
8184 && !h->def_regular
8185 && h->protected_def
8186 && ppc_elf_hash_entry (h)->has_addr16_ha
8187 && ppc_elf_hash_entry (h)->has_addr16_lo
8188 && htab->params->pic_fixup > 0)
8189 {
8190 /* Convert lis;addi or lis;load/store accessing a protected
8191 variable defined in a shared library to PIC. */
8192 unsigned int insn;
8193
8194 if (r_type == R_PPC_ADDR16_HA)
8195 {
8196 insn = bfd_get_32 (output_bfd,
8197 contents + rel->r_offset - d_offset);
8198 if ((insn & (0x3f << 26)) == (15u << 26)
8199 && (insn & (0x1f << 16)) == 0 /* lis */)
8200 {
8201 bfd_byte *p;
8202 bfd_vma off;
8203 bfd_vma got_addr;
8204
8205 p = (contents + input_section->size
8206 - relax_info->workaround_size
8207 - relax_info->picfixup_size
8208 + picfixup_size);
8209 off = (p - contents) - (rel->r_offset - d_offset);
8210 if (off > 0x1fffffc || (off & 3) != 0)
8211 info->callbacks->einfo
8212 (_("%P: %H: fixup branch overflow\n"),
8213 input_bfd, input_section, rel->r_offset);
8214
8215 bfd_put_32 (output_bfd, B | off,
8216 contents + rel->r_offset - d_offset);
8217 got_addr = (htab->got->output_section->vma
8218 + htab->got->output_offset
8219 + (h->got.offset & ~1));
8220 wrel->r_offset = (p - contents) + d_offset;
8221 wrel->r_info = ELF32_R_INFO (0, R_PPC_ADDR16_HA);
8222 wrel->r_addend = got_addr;
8223 insn &= ~0xffff;
8224 insn |= ((unsigned int )(got_addr + 0x8000) >> 16) & 0xffff;
8225 bfd_put_32 (output_bfd, insn, p);
8226
8227 /* Convert lis to lwz, loading address from GOT. */
8228 insn &= ~0xffff;
8229 insn ^= (32u ^ 15u) << 26;
8230 insn |= (insn & (0x1f << 21)) >> 5;
8231 insn |= got_addr & 0xffff;
8232 bfd_put_32 (output_bfd, insn, p + 4);
8233
8234 bfd_put_32 (output_bfd, B | ((-4 - off) & 0x3ffffff), p + 8);
8235 picfixup_size += 12;
8236
8237 /* Use one of the spare relocs, so --emit-relocs
8238 output is reasonable. */
8239 memmove (rel + 1, rel, (relend - rel - 1) * sizeof (*rel));
8240 wrel++, rel++;
8241 rel->r_offset = wrel[-1].r_offset + 4;
8242 rel->r_info = ELF32_R_INFO (0, R_PPC_ADDR16_LO);
8243 rel->r_addend = wrel[-1].r_addend;
8244
8245 /* Continue on as if we had a got reloc, to output
8246 dynamic reloc. */
8247 r_type = R_PPC_GOT16_LO;
8248 }
8249 else
8250 info->callbacks->einfo
8251 (_("%P: %H: error: %s with unexpected instruction %x\n"),
8252 input_bfd, input_section, rel->r_offset,
8253 "R_PPC_ADDR16_HA", insn);
8254 }
8255 else if (r_type == R_PPC_ADDR16_LO)
8256 {
8257 insn = bfd_get_32 (output_bfd,
8258 contents + rel->r_offset - d_offset);
8259 if ((insn & (0x3f << 26)) == 14u << 26 /* addi */
8260 || (insn & (0x3f << 26)) == 32u << 26 /* lwz */
8261 || (insn & (0x3f << 26)) == 34u << 26 /* lbz */
8262 || (insn & (0x3f << 26)) == 36u << 26 /* stw */
8263 || (insn & (0x3f << 26)) == 38u << 26 /* stb */
8264 || (insn & (0x3f << 26)) == 40u << 26 /* lhz */
8265 || (insn & (0x3f << 26)) == 42u << 26 /* lha */
8266 || (insn & (0x3f << 26)) == 44u << 26 /* sth */
8267 || (insn & (0x3f << 26)) == 46u << 26 /* lmw */
8268 || (insn & (0x3f << 26)) == 47u << 26 /* stmw */
8269 || (insn & (0x3f << 26)) == 48u << 26 /* lfs */
8270 || (insn & (0x3f << 26)) == 50u << 26 /* lfd */
8271 || (insn & (0x3f << 26)) == 52u << 26 /* stfs */
8272 || (insn & (0x3f << 26)) == 54u << 26 /* stfd */
8273 || ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
8274 && (insn & 3) != 1)
8275 || ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */
8276 && ((insn & 3) == 0 || (insn & 3) == 3)))
8277 {
8278 /* Arrange to apply the reloc addend, if any. */
8279 relocation = 0;
8280 unresolved_reloc = FALSE;
8281 rel->r_info = ELF32_R_INFO (0, r_type);
8282 }
8283 else
8284 info->callbacks->einfo
8285 (_("%P: %H: error: %s with unexpected instruction %x\n"),
8286 input_bfd, input_section, rel->r_offset,
8287 "R_PPC_ADDR16_LO", insn);
8288 }
8289 }
8290
8291 ifunc = NULL;
8292 if (!htab->is_vxworks)
8293 {
8294 struct plt_entry *ent;
8295
8296 if (h != NULL)
8297 {
8298 if (h->type == STT_GNU_IFUNC)
8299 ifunc = &h->plt.plist;
8300 }
8301 else if (local_got_offsets != NULL
8302 && ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
8303 {
8304 struct plt_entry **local_plt;
8305
8306 local_plt = (struct plt_entry **) (local_got_offsets
8307 + symtab_hdr->sh_info);
8308 ifunc = local_plt + r_symndx;
8309 }
8310
8311 ent = NULL;
8312 if (ifunc != NULL
8313 && (!bfd_link_pic (info)
8314 || is_branch_reloc (r_type)))
8315 {
8316 addend = 0;
8317 if (r_type == R_PPC_PLTREL24 && bfd_link_pic (info))
8318 addend = rel->r_addend;
8319 ent = find_plt_ent (ifunc, got2, addend);
8320 }
8321 if (ent != NULL)
8322 {
8323 if (bfd_link_pic (info)
8324 && ent->sec != got2
8325 && htab->plt_type != PLT_NEW
8326 && (!htab->elf.dynamic_sections_created
8327 || h == NULL
8328 || h->dynindx == -1))
8329 {
8330 /* Uh oh, we are going to create a pic glink stub
8331 for an ifunc (here for h == NULL and later in
8332 finish_dynamic_symbol for h != NULL), and
8333 apparently are using code compiled with
8334 -mbss-plt. The difficulty is that -mbss-plt code
8335 gives no indication via a magic PLTREL24 addend
8336 whether r30 is equal to _GLOBAL_OFFSET_TABLE_ or
8337 is pointing into a .got2 section (and how far
8338 into .got2). */
8339 info->callbacks->einfo
8340 (_("%X%P: %H: unsupported bss-plt -fPIC ifunc %s\n"),
8341 input_bfd, input_section, rel->r_offset, sym_name);
8342 }
8343 if (h == NULL && (ent->plt.offset & 1) == 0)
8344 {
8345 Elf_Internal_Rela rela;
8346 bfd_byte *loc;
8347
8348 rela.r_offset = (htab->iplt->output_section->vma
8349 + htab->iplt->output_offset
8350 + ent->plt.offset);
8351 rela.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
8352 rela.r_addend = relocation;
8353 loc = htab->reliplt->contents;
8354 loc += (htab->reliplt->reloc_count++
8355 * sizeof (Elf32_External_Rela));
8356 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
8357
8358 ent->plt.offset |= 1;
8359 }
8360 if (h == NULL && (ent->glink_offset & 1) == 0)
8361 {
8362 unsigned char *p = ((unsigned char *) htab->glink->contents
8363 + ent->glink_offset);
8364 write_glink_stub (ent, htab->iplt, p, info);
8365 ent->glink_offset |= 1;
8366 }
8367
8368 unresolved_reloc = FALSE;
8369 if (htab->plt_type == PLT_NEW
8370 || !htab->elf.dynamic_sections_created
8371 || h == NULL
8372 || h->dynindx == -1)
8373 relocation = (htab->glink->output_section->vma
8374 + htab->glink->output_offset
8375 + (ent->glink_offset & ~1));
8376 else
8377 relocation = (htab->plt->output_section->vma
8378 + htab->plt->output_offset
8379 + ent->plt.offset);
8380 }
8381 }
8382
8383 addend = rel->r_addend;
8384 tls_type = 0;
8385 howto = NULL;
8386 if (r_type < R_PPC_max)
8387 howto = ppc_elf_howto_table[r_type];
8388 switch (r_type)
8389 {
8390 default:
8391 info->callbacks->einfo
8392 (_("%P: %B: unknown relocation type %d for symbol %s\n"),
8393 input_bfd, (int) r_type, sym_name);
8394
8395 bfd_set_error (bfd_error_bad_value);
8396 ret = FALSE;
8397 goto copy_reloc;
8398
8399 case R_PPC_NONE:
8400 case R_PPC_TLS:
8401 case R_PPC_TLSGD:
8402 case R_PPC_TLSLD:
8403 case R_PPC_EMB_MRKREF:
8404 case R_PPC_GNU_VTINHERIT:
8405 case R_PPC_GNU_VTENTRY:
8406 goto copy_reloc;
8407
8408 /* GOT16 relocations. Like an ADDR16 using the symbol's
8409 address in the GOT as relocation value instead of the
8410 symbol's value itself. Also, create a GOT entry for the
8411 symbol and put the symbol value there. */
8412 case R_PPC_GOT_TLSGD16:
8413 case R_PPC_GOT_TLSGD16_LO:
8414 case R_PPC_GOT_TLSGD16_HI:
8415 case R_PPC_GOT_TLSGD16_HA:
8416 tls_type = TLS_TLS | TLS_GD;
8417 goto dogot;
8418
8419 case R_PPC_GOT_TLSLD16:
8420 case R_PPC_GOT_TLSLD16_LO:
8421 case R_PPC_GOT_TLSLD16_HI:
8422 case R_PPC_GOT_TLSLD16_HA:
8423 tls_type = TLS_TLS | TLS_LD;
8424 goto dogot;
8425
8426 case R_PPC_GOT_TPREL16:
8427 case R_PPC_GOT_TPREL16_LO:
8428 case R_PPC_GOT_TPREL16_HI:
8429 case R_PPC_GOT_TPREL16_HA:
8430 tls_type = TLS_TLS | TLS_TPREL;
8431 goto dogot;
8432
8433 case R_PPC_GOT_DTPREL16:
8434 case R_PPC_GOT_DTPREL16_LO:
8435 case R_PPC_GOT_DTPREL16_HI:
8436 case R_PPC_GOT_DTPREL16_HA:
8437 tls_type = TLS_TLS | TLS_DTPREL;
8438 goto dogot;
8439
8440 case R_PPC_GOT16:
8441 case R_PPC_GOT16_LO:
8442 case R_PPC_GOT16_HI:
8443 case R_PPC_GOT16_HA:
8444 tls_mask = 0;
8445 dogot:
8446 {
8447 /* Relocation is to the entry for this symbol in the global
8448 offset table. */
8449 bfd_vma off;
8450 bfd_vma *offp;
8451 unsigned long indx;
8452
8453 if (htab->got == NULL)
8454 abort ();
8455
8456 indx = 0;
8457 if (tls_type == (TLS_TLS | TLS_LD)
8458 && (h == NULL
8459 || !h->def_dynamic))
8460 offp = &htab->tlsld_got.offset;
8461 else if (h != NULL)
8462 {
8463 bfd_boolean dyn;
8464 dyn = htab->elf.dynamic_sections_created;
8465 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, bfd_link_pic (info), h)
8466 || (bfd_link_pic (info)
8467 && SYMBOL_REFERENCES_LOCAL (info, h)))
8468 /* This is actually a static link, or it is a
8469 -Bsymbolic link and the symbol is defined
8470 locally, or the symbol was forced to be local
8471 because of a version file. */
8472 ;
8473 else
8474 {
8475 BFD_ASSERT (h->dynindx != -1);
8476 indx = h->dynindx;
8477 unresolved_reloc = FALSE;
8478 }
8479 offp = &h->got.offset;
8480 }
8481 else
8482 {
8483 if (local_got_offsets == NULL)
8484 abort ();
8485 offp = &local_got_offsets[r_symndx];
8486 }
8487
8488 /* The offset must always be a multiple of 4. We use the
8489 least significant bit to record whether we have already
8490 processed this entry. */
8491 off = *offp;
8492 if ((off & 1) != 0)
8493 off &= ~1;
8494 else
8495 {
8496 unsigned int tls_m = (tls_mask
8497 & (TLS_LD | TLS_GD | TLS_DTPREL
8498 | TLS_TPREL | TLS_TPRELGD));
8499
8500 if (offp == &htab->tlsld_got.offset)
8501 tls_m = TLS_LD;
8502 else if (h == NULL
8503 || !h->def_dynamic)
8504 tls_m &= ~TLS_LD;
8505
8506 /* We might have multiple got entries for this sym.
8507 Initialize them all. */
8508 do
8509 {
8510 int tls_ty = 0;
8511
8512 if ((tls_m & TLS_LD) != 0)
8513 {
8514 tls_ty = TLS_TLS | TLS_LD;
8515 tls_m &= ~TLS_LD;
8516 }
8517 else if ((tls_m & TLS_GD) != 0)
8518 {
8519 tls_ty = TLS_TLS | TLS_GD;
8520 tls_m &= ~TLS_GD;
8521 }
8522 else if ((tls_m & TLS_DTPREL) != 0)
8523 {
8524 tls_ty = TLS_TLS | TLS_DTPREL;
8525 tls_m &= ~TLS_DTPREL;
8526 }
8527 else if ((tls_m & (TLS_TPREL | TLS_TPRELGD)) != 0)
8528 {
8529 tls_ty = TLS_TLS | TLS_TPREL;
8530 tls_m = 0;
8531 }
8532
8533 /* Generate relocs for the dynamic linker. */
8534 if ((bfd_link_pic (info) || indx != 0)
8535 && (offp == &htab->tlsld_got.offset
8536 || h == NULL
8537 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
8538 || h->root.type != bfd_link_hash_undefweak))
8539 {
8540 asection *rsec = htab->relgot;
8541 bfd_byte * loc;
8542
8543 if (ifunc != NULL)
8544 rsec = htab->reliplt;
8545 outrel.r_offset = (htab->got->output_section->vma
8546 + htab->got->output_offset
8547 + off);
8548 outrel.r_addend = 0;
8549 if (tls_ty & (TLS_LD | TLS_GD))
8550 {
8551 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPMOD32);
8552 if (tls_ty == (TLS_TLS | TLS_GD))
8553 {
8554 loc = rsec->contents;
8555 loc += (rsec->reloc_count++
8556 * sizeof (Elf32_External_Rela));
8557 bfd_elf32_swap_reloca_out (output_bfd,
8558 &outrel, loc);
8559 outrel.r_offset += 4;
8560 outrel.r_info
8561 = ELF32_R_INFO (indx, R_PPC_DTPREL32);
8562 }
8563 }
8564 else if (tls_ty == (TLS_TLS | TLS_DTPREL))
8565 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPREL32);
8566 else if (tls_ty == (TLS_TLS | TLS_TPREL))
8567 outrel.r_info = ELF32_R_INFO (indx, R_PPC_TPREL32);
8568 else if (indx != 0)
8569 outrel.r_info = ELF32_R_INFO (indx, R_PPC_GLOB_DAT);
8570 else if (ifunc != NULL)
8571 outrel.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
8572 else
8573 outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
8574 if (indx == 0 && tls_ty != (TLS_TLS | TLS_LD))
8575 {
8576 outrel.r_addend += relocation;
8577 if (tls_ty & (TLS_GD | TLS_DTPREL | TLS_TPREL))
8578 {
8579 if (htab->elf.tls_sec == NULL)
8580 outrel.r_addend = 0;
8581 else
8582 outrel.r_addend -= htab->elf.tls_sec->vma;
8583 }
8584 }
8585 loc = rsec->contents;
8586 loc += (rsec->reloc_count++
8587 * sizeof (Elf32_External_Rela));
8588 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
8589 }
8590
8591 /* Init the .got section contents if we're not
8592 emitting a reloc. */
8593 else
8594 {
8595 bfd_vma value = relocation;
8596
8597 if (tls_ty == (TLS_TLS | TLS_LD))
8598 value = 1;
8599 else if (tls_ty != 0)
8600 {
8601 if (htab->elf.tls_sec == NULL)
8602 value = 0;
8603 else
8604 {
8605 value -= htab->elf.tls_sec->vma + DTP_OFFSET;
8606 if (tls_ty == (TLS_TLS | TLS_TPREL))
8607 value += DTP_OFFSET - TP_OFFSET;
8608 }
8609
8610 if (tls_ty == (TLS_TLS | TLS_GD))
8611 {
8612 bfd_put_32 (output_bfd, value,
8613 htab->got->contents + off + 4);
8614 value = 1;
8615 }
8616 }
8617 bfd_put_32 (output_bfd, value,
8618 htab->got->contents + off);
8619 }
8620
8621 off += 4;
8622 if (tls_ty & (TLS_LD | TLS_GD))
8623 off += 4;
8624 }
8625 while (tls_m != 0);
8626
8627 off = *offp;
8628 *offp = off | 1;
8629 }
8630
8631 if (off >= (bfd_vma) -2)
8632 abort ();
8633
8634 if ((tls_type & TLS_TLS) != 0)
8635 {
8636 if (tls_type != (TLS_TLS | TLS_LD))
8637 {
8638 if ((tls_mask & TLS_LD) != 0
8639 && !(h == NULL
8640 || !h->def_dynamic))
8641 off += 8;
8642 if (tls_type != (TLS_TLS | TLS_GD))
8643 {
8644 if ((tls_mask & TLS_GD) != 0)
8645 off += 8;
8646 if (tls_type != (TLS_TLS | TLS_DTPREL))
8647 {
8648 if ((tls_mask & TLS_DTPREL) != 0)
8649 off += 4;
8650 }
8651 }
8652 }
8653 }
8654
8655 /* If here for a picfixup, we're done. */
8656 if (r_type != ELF32_R_TYPE (rel->r_info))
8657 goto copy_reloc;
8658
8659 relocation = (htab->got->output_section->vma
8660 + htab->got->output_offset
8661 + off
8662 - SYM_VAL (htab->elf.hgot));
8663
8664 /* Addends on got relocations don't make much sense.
8665 x+off@got is actually x@got+off, and since the got is
8666 generated by a hash table traversal, the value in the
8667 got at entry m+n bears little relation to the entry m. */
8668 if (addend != 0)
8669 info->callbacks->einfo
8670 (_("%P: %H: non-zero addend on %s reloc against `%s'\n"),
8671 input_bfd, input_section, rel->r_offset,
8672 howto->name,
8673 sym_name);
8674 }
8675 break;
8676
8677 /* Relocations that need no special processing. */
8678 case R_PPC_LOCAL24PC:
8679 /* It makes no sense to point a local relocation
8680 at a symbol not in this object. */
8681 if (unresolved_reloc)
8682 {
8683 (*info->callbacks->undefined_symbol) (info,
8684 h->root.root.string,
8685 input_bfd,
8686 input_section,
8687 rel->r_offset,
8688 TRUE);
8689 goto copy_reloc;
8690 }
8691 if (h != NULL && h->type == STT_GNU_IFUNC && bfd_link_pic (info))
8692 {
8693 /* @local on an ifunc does not really make sense since
8694 the ifunc resolver can take you anywhere. More
8695 seriously, calls to ifuncs must go through a plt call
8696 stub, and for pic the plt call stubs uses r30 to
8697 access the PLT. The problem is that a call that is
8698 local won't have the +32k reloc addend trick marking
8699 -fPIC code, so the linker won't know whether r30 is
8700 _GLOBAL_OFFSET_TABLE_ or pointing into a .got2 section. */
8701 info->callbacks->einfo (_("%X%P: %H: @local call to ifunc %s\n"),
8702 input_bfd, input_section, rel->r_offset,
8703 h->root.root.string);
8704 }
8705 break;
8706
8707 case R_PPC_DTPREL16:
8708 case R_PPC_DTPREL16_LO:
8709 case R_PPC_DTPREL16_HI:
8710 case R_PPC_DTPREL16_HA:
8711 if (htab->elf.tls_sec != NULL)
8712 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
8713 break;
8714
8715 /* Relocations that may need to be propagated if this is a shared
8716 object. */
8717 case R_PPC_TPREL16:
8718 case R_PPC_TPREL16_LO:
8719 case R_PPC_TPREL16_HI:
8720 case R_PPC_TPREL16_HA:
8721 if (h != NULL
8722 && h->root.type == bfd_link_hash_undefweak
8723 && h->dynindx == -1)
8724 {
8725 /* Make this relocation against an undefined weak symbol
8726 resolve to zero. This is really just a tweak, since
8727 code using weak externs ought to check that they are
8728 defined before using them. */
8729 bfd_byte *p = contents + rel->r_offset - d_offset;
8730 unsigned int insn = bfd_get_32 (output_bfd, p);
8731 insn = _bfd_elf_ppc_at_tprel_transform (insn, 2);
8732 if (insn != 0)
8733 bfd_put_32 (output_bfd, insn, p);
8734 break;
8735 }
8736 if (htab->elf.tls_sec != NULL)
8737 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
8738 /* The TPREL16 relocs shouldn't really be used in shared
8739 libs as they will result in DT_TEXTREL being set, but
8740 support them anyway. */
8741 goto dodyn;
8742
8743 case R_PPC_TPREL32:
8744 if (htab->elf.tls_sec != NULL)
8745 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
8746 goto dodyn;
8747
8748 case R_PPC_DTPREL32:
8749 if (htab->elf.tls_sec != NULL)
8750 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
8751 goto dodyn;
8752
8753 case R_PPC_DTPMOD32:
8754 relocation = 1;
8755 addend = 0;
8756 goto dodyn;
8757
8758 case R_PPC_REL16:
8759 case R_PPC_REL16_LO:
8760 case R_PPC_REL16_HI:
8761 case R_PPC_REL16_HA:
8762 case R_PPC_REL16DX_HA:
8763 break;
8764
8765 case R_PPC_REL32:
8766 if (h == NULL || h == htab->elf.hgot)
8767 break;
8768 /* fall through */
8769
8770 case R_PPC_ADDR32:
8771 case R_PPC_ADDR16:
8772 case R_PPC_ADDR16_LO:
8773 case R_PPC_ADDR16_HI:
8774 case R_PPC_ADDR16_HA:
8775 case R_PPC_UADDR32:
8776 case R_PPC_UADDR16:
8777 goto dodyn;
8778
8779 case R_PPC_VLE_REL8:
8780 case R_PPC_VLE_REL15:
8781 case R_PPC_VLE_REL24:
8782 case R_PPC_REL24:
8783 case R_PPC_REL14:
8784 case R_PPC_REL14_BRTAKEN:
8785 case R_PPC_REL14_BRNTAKEN:
8786 /* If these relocations are not to a named symbol, they can be
8787 handled right here, no need to bother the dynamic linker. */
8788 if (SYMBOL_CALLS_LOCAL (info, h)
8789 || h == htab->elf.hgot)
8790 break;
8791 /* fall through */
8792
8793 case R_PPC_ADDR24:
8794 case R_PPC_ADDR14:
8795 case R_PPC_ADDR14_BRTAKEN:
8796 case R_PPC_ADDR14_BRNTAKEN:
8797 if (h != NULL && !bfd_link_pic (info))
8798 break;
8799 /* fall through */
8800
8801 dodyn:
8802 if ((input_section->flags & SEC_ALLOC) == 0
8803 || is_vxworks_tls)
8804 break;
8805
8806 if ((bfd_link_pic (info)
8807 && !(h != NULL
8808 && ((h->root.type == bfd_link_hash_undefined
8809 && (ELF_ST_VISIBILITY (h->other) == STV_HIDDEN
8810 || ELF_ST_VISIBILITY (h->other) == STV_INTERNAL))
8811 || (h->root.type == bfd_link_hash_undefweak
8812 && ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)))
8813 && (must_be_dyn_reloc (info, r_type)
8814 || !SYMBOL_CALLS_LOCAL (info, h)))
8815 || (ELIMINATE_COPY_RELOCS
8816 && !bfd_link_pic (info)
8817 && h != NULL
8818 && h->dynindx != -1
8819 && !h->non_got_ref
8820 && !h->def_regular
8821 && !(h->protected_def
8822 && ppc_elf_hash_entry (h)->has_addr16_ha
8823 && ppc_elf_hash_entry (h)->has_addr16_lo
8824 && htab->params->pic_fixup > 0)))
8825 {
8826 int skip;
8827 bfd_byte *loc;
8828 asection *sreloc;
8829 #ifdef DEBUG
8830 fprintf (stderr, "ppc_elf_relocate_section needs to "
8831 "create relocation for %s\n",
8832 (h && h->root.root.string
8833 ? h->root.root.string : "<unknown>"));
8834 #endif
8835
8836 /* When generating a shared object, these relocations
8837 are copied into the output file to be resolved at run
8838 time. */
8839 sreloc = elf_section_data (input_section)->sreloc;
8840 if (ifunc)
8841 sreloc = htab->reliplt;
8842 if (sreloc == NULL)
8843 return FALSE;
8844
8845 skip = 0;
8846 outrel.r_offset = _bfd_elf_section_offset (output_bfd, info,
8847 input_section,
8848 rel->r_offset);
8849 if (outrel.r_offset == (bfd_vma) -1
8850 || outrel.r_offset == (bfd_vma) -2)
8851 skip = (int) outrel.r_offset;
8852 outrel.r_offset += (input_section->output_section->vma
8853 + input_section->output_offset);
8854
8855 if (skip)
8856 memset (&outrel, 0, sizeof outrel);
8857 else if ((h != NULL
8858 && (h->root.type == bfd_link_hash_undefined
8859 || h->root.type == bfd_link_hash_undefweak))
8860 || !SYMBOL_REFERENCES_LOCAL (info, h))
8861 {
8862 BFD_ASSERT (h->dynindx != -1);
8863 unresolved_reloc = FALSE;
8864 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
8865 outrel.r_addend = rel->r_addend;
8866 }
8867 else
8868 {
8869 outrel.r_addend = relocation + rel->r_addend;
8870
8871 if (r_type != R_PPC_ADDR32)
8872 {
8873 long indx = 0;
8874
8875 if (ifunc != NULL)
8876 {
8877 /* If we get here when building a static
8878 executable, then the libc startup function
8879 responsible for applying indirect function
8880 relocations is going to complain about
8881 the reloc type.
8882 If we get here when building a dynamic
8883 executable, it will be because we have
8884 a text relocation. The dynamic loader
8885 will set the text segment writable and
8886 non-executable to apply text relocations.
8887 So we'll segfault when trying to run the
8888 indirection function to resolve the reloc. */
8889 info->callbacks->einfo
8890 (_("%P: %H: relocation %s for indirect "
8891 "function %s unsupported\n"),
8892 input_bfd, input_section, rel->r_offset,
8893 howto->name,
8894 sym_name);
8895 ret = FALSE;
8896 }
8897 else if (r_symndx == STN_UNDEF || bfd_is_abs_section (sec))
8898 ;
8899 else if (sec == NULL || sec->owner == NULL)
8900 {
8901 bfd_set_error (bfd_error_bad_value);
8902 ret = FALSE;
8903 }
8904 else
8905 {
8906 asection *osec;
8907
8908 /* We are turning this relocation into one
8909 against a section symbol. It would be
8910 proper to subtract the symbol's value,
8911 osec->vma, from the emitted reloc addend,
8912 but ld.so expects buggy relocs.
8913 FIXME: Why not always use a zero index? */
8914 osec = sec->output_section;
8915 indx = elf_section_data (osec)->dynindx;
8916 if (indx == 0)
8917 {
8918 osec = htab->elf.text_index_section;
8919 indx = elf_section_data (osec)->dynindx;
8920 }
8921 BFD_ASSERT (indx != 0);
8922 #ifdef DEBUG
8923 if (indx == 0)
8924 printf ("indx=%ld section=%s flags=%08x name=%s\n",
8925 indx, osec->name, osec->flags,
8926 h->root.root.string);
8927 #endif
8928 }
8929
8930 outrel.r_info = ELF32_R_INFO (indx, r_type);
8931 }
8932 else if (ifunc != NULL)
8933 outrel.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
8934 else
8935 outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
8936 }
8937
8938 loc = sreloc->contents;
8939 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
8940 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
8941
8942 if (skip == -1)
8943 goto copy_reloc;
8944
8945 /* This reloc will be computed at runtime. We clear the memory
8946 so that it contains predictable value. */
8947 if (! skip
8948 && ((input_section->flags & SEC_ALLOC) != 0
8949 || ELF32_R_TYPE (outrel.r_info) != R_PPC_RELATIVE))
8950 {
8951 relocation = howto->pc_relative ? outrel.r_offset : 0;
8952 addend = 0;
8953 break;
8954 }
8955 }
8956 break;
8957
8958 case R_PPC_RELAX_PLT:
8959 case R_PPC_RELAX_PLTREL24:
8960 if (h != NULL)
8961 {
8962 struct plt_entry *ent;
8963 bfd_vma got2_addend = 0;
8964
8965 if (r_type == R_PPC_RELAX_PLTREL24)
8966 {
8967 if (bfd_link_pic (info))
8968 got2_addend = addend;
8969 addend = 0;
8970 }
8971 ent = find_plt_ent (&h->plt.plist, got2, got2_addend);
8972 if (htab->plt_type == PLT_NEW)
8973 relocation = (htab->glink->output_section->vma
8974 + htab->glink->output_offset
8975 + ent->glink_offset);
8976 else
8977 relocation = (htab->plt->output_section->vma
8978 + htab->plt->output_offset
8979 + ent->plt.offset);
8980 }
8981 /* Fall thru */
8982
8983 case R_PPC_RELAX:
8984 {
8985 const int *stub;
8986 size_t size;
8987 size_t insn_offset = rel->r_offset;
8988 unsigned int insn;
8989
8990 if (bfd_link_pic (info))
8991 {
8992 relocation -= (input_section->output_section->vma
8993 + input_section->output_offset
8994 + rel->r_offset - 4);
8995 stub = shared_stub_entry;
8996 bfd_put_32 (output_bfd, stub[0], contents + insn_offset - 12);
8997 bfd_put_32 (output_bfd, stub[1], contents + insn_offset - 8);
8998 bfd_put_32 (output_bfd, stub[2], contents + insn_offset - 4);
8999 stub += 3;
9000 size = ARRAY_SIZE (shared_stub_entry) - 3;
9001 }
9002 else
9003 {
9004 stub = stub_entry;
9005 size = ARRAY_SIZE (stub_entry);
9006 }
9007
9008 relocation += addend;
9009 if (bfd_link_relocatable (info))
9010 relocation = 0;
9011
9012 /* First insn is HA, second is LO. */
9013 insn = *stub++;
9014 insn |= ((relocation + 0x8000) >> 16) & 0xffff;
9015 bfd_put_32 (output_bfd, insn, contents + insn_offset);
9016 insn_offset += 4;
9017
9018 insn = *stub++;
9019 insn |= relocation & 0xffff;
9020 bfd_put_32 (output_bfd, insn, contents + insn_offset);
9021 insn_offset += 4;
9022 size -= 2;
9023
9024 while (size != 0)
9025 {
9026 insn = *stub++;
9027 --size;
9028 bfd_put_32 (output_bfd, insn, contents + insn_offset);
9029 insn_offset += 4;
9030 }
9031
9032 /* Rewrite the reloc and convert one of the trailing nop
9033 relocs to describe this relocation. */
9034 BFD_ASSERT (ELF32_R_TYPE (relend[-1].r_info) == R_PPC_NONE);
9035 /* The relocs are at the bottom 2 bytes */
9036 wrel->r_offset = rel->r_offset + d_offset;
9037 wrel->r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_HA);
9038 wrel->r_addend = rel->r_addend;
9039 memmove (wrel + 1, wrel, (relend - wrel - 1) * sizeof (*wrel));
9040 wrel++, rel++;
9041 wrel->r_offset += 4;
9042 wrel->r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_LO);
9043 }
9044 continue;
9045
9046 /* Indirect .sdata relocation. */
9047 case R_PPC_EMB_SDAI16:
9048 BFD_ASSERT (htab->sdata[0].section != NULL);
9049 if (!is_static_defined (htab->sdata[0].sym))
9050 {
9051 unresolved_reloc = TRUE;
9052 break;
9053 }
9054 relocation
9055 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[0],
9056 h, relocation, rel);
9057 addend = 0;
9058 break;
9059
9060 /* Indirect .sdata2 relocation. */
9061 case R_PPC_EMB_SDA2I16:
9062 BFD_ASSERT (htab->sdata[1].section != NULL);
9063 if (!is_static_defined (htab->sdata[1].sym))
9064 {
9065 unresolved_reloc = TRUE;
9066 break;
9067 }
9068 relocation
9069 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[1],
9070 h, relocation, rel);
9071 addend = 0;
9072 break;
9073
9074 /* Handle the TOC16 reloc. We want to use the offset within the .got
9075 section, not the actual VMA. This is appropriate when generating
9076 an embedded ELF object, for which the .got section acts like the
9077 AIX .toc section. */
9078 case R_PPC_TOC16: /* phony GOT16 relocations */
9079 if (sec == NULL || sec->output_section == NULL)
9080 {
9081 unresolved_reloc = TRUE;
9082 break;
9083 }
9084 BFD_ASSERT (strcmp (bfd_get_section_name (sec->owner, sec),
9085 ".got") == 0
9086 || strcmp (bfd_get_section_name (sec->owner, sec),
9087 ".cgot") == 0);
9088
9089 addend -= sec->output_section->vma + sec->output_offset + 0x8000;
9090 break;
9091
9092 case R_PPC_PLTREL24:
9093 if (h != NULL && ifunc == NULL)
9094 {
9095 struct plt_entry *ent;
9096
9097 ent = find_plt_ent (&h->plt.plist, got2,
9098 bfd_link_pic (info) ? addend : 0);
9099 if (ent == NULL
9100 || htab->plt == NULL)
9101 {
9102 /* We didn't make a PLT entry for this symbol. This
9103 happens when statically linking PIC code, or when
9104 using -Bsymbolic. */
9105 }
9106 else
9107 {
9108 /* Relocation is to the entry for this symbol in the
9109 procedure linkage table. */
9110 unresolved_reloc = FALSE;
9111 if (htab->plt_type == PLT_NEW)
9112 relocation = (htab->glink->output_section->vma
9113 + htab->glink->output_offset
9114 + ent->glink_offset);
9115 else
9116 relocation = (htab->plt->output_section->vma
9117 + htab->plt->output_offset
9118 + ent->plt.offset);
9119 }
9120 }
9121
9122 /* R_PPC_PLTREL24 is rather special. If non-zero, the
9123 addend specifies the GOT pointer offset within .got2.
9124 Don't apply it to the relocation field. */
9125 addend = 0;
9126 break;
9127
9128 /* Relocate against _SDA_BASE_. */
9129 case R_PPC_SDAREL16:
9130 {
9131 const char *name;
9132 struct elf_link_hash_entry *sda = htab->sdata[0].sym;
9133
9134 if (sec == NULL
9135 || sec->output_section == NULL
9136 || !is_static_defined (sda))
9137 {
9138 unresolved_reloc = TRUE;
9139 break;
9140 }
9141 addend -= SYM_VAL (sda);
9142
9143 name = bfd_get_section_name (output_bfd, sec->output_section);
9144 if (!(strcmp (name, ".sdata") == 0
9145 || strcmp (name, ".sbss") == 0))
9146 {
9147 info->callbacks->einfo
9148 (_("%P: %B: the target (%s) of a %s relocation is "
9149 "in the wrong output section (%s)\n"),
9150 input_bfd,
9151 sym_name,
9152 howto->name,
9153 name);
9154 }
9155 }
9156 break;
9157
9158 /* Relocate against _SDA2_BASE_. */
9159 case R_PPC_EMB_SDA2REL:
9160 {
9161 const char *name;
9162 struct elf_link_hash_entry *sda = htab->sdata[1].sym;
9163
9164 if (sec == NULL
9165 || sec->output_section == NULL
9166 || !is_static_defined (sda))
9167 {
9168 unresolved_reloc = TRUE;
9169 break;
9170 }
9171 addend -= SYM_VAL (sda);
9172
9173 name = bfd_get_section_name (output_bfd, sec->output_section);
9174 if (!(strcmp (name, ".sdata2") == 0
9175 || strcmp (name, ".sbss2") == 0))
9176 {
9177 info->callbacks->einfo
9178 (_("%P: %B: the target (%s) of a %s relocation is "
9179 "in the wrong output section (%s)\n"),
9180 input_bfd,
9181 sym_name,
9182 howto->name,
9183 name);
9184 }
9185 }
9186 break;
9187
9188 case R_PPC_VLE_LO16A:
9189 relocation = relocation + addend;
9190 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9191 relocation, split16a_type);
9192 goto copy_reloc;
9193
9194 case R_PPC_VLE_LO16D:
9195 relocation = relocation + addend;
9196 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9197 relocation, split16d_type);
9198 goto copy_reloc;
9199
9200 case R_PPC_VLE_HI16A:
9201 relocation = (relocation + addend) >> 16;
9202 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9203 relocation, split16a_type);
9204 goto copy_reloc;
9205
9206 case R_PPC_VLE_HI16D:
9207 relocation = (relocation + addend) >> 16;
9208 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9209 relocation, split16d_type);
9210 goto copy_reloc;
9211
9212 case R_PPC_VLE_HA16A:
9213 relocation = (relocation + addend + 0x8000) >> 16;
9214 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9215 relocation, split16a_type);
9216 goto copy_reloc;
9217
9218 case R_PPC_VLE_HA16D:
9219 relocation = (relocation + addend + 0x8000) >> 16;
9220 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9221 relocation, split16d_type);
9222 goto copy_reloc;
9223
9224 /* Relocate against either _SDA_BASE_, _SDA2_BASE_, or 0. */
9225 case R_PPC_EMB_SDA21:
9226 case R_PPC_VLE_SDA21:
9227 case R_PPC_EMB_RELSDA:
9228 case R_PPC_VLE_SDA21_LO:
9229 {
9230 const char *name;
9231 int reg;
9232 unsigned int insn;
9233 struct elf_link_hash_entry *sda = NULL;
9234
9235 if (sec == NULL || sec->output_section == NULL)
9236 {
9237 unresolved_reloc = TRUE;
9238 break;
9239 }
9240
9241 name = bfd_get_section_name (output_bfd, sec->output_section);
9242 if (strcmp (name, ".sdata") == 0
9243 || strcmp (name, ".sbss") == 0)
9244 {
9245 reg = 13;
9246 sda = htab->sdata[0].sym;
9247 }
9248 else if (strcmp (name, ".sdata2") == 0
9249 || strcmp (name, ".sbss2") == 0)
9250 {
9251 reg = 2;
9252 sda = htab->sdata[1].sym;
9253 }
9254 else if (strcmp (name, ".PPC.EMB.sdata0") == 0
9255 || strcmp (name, ".PPC.EMB.sbss0") == 0)
9256 {
9257 reg = 0;
9258 }
9259 else
9260 {
9261 info->callbacks->einfo
9262 (_("%P: %B: the target (%s) of a %s relocation is "
9263 "in the wrong output section (%s)\n"),
9264 input_bfd,
9265 sym_name,
9266 howto->name,
9267 name);
9268
9269 bfd_set_error (bfd_error_bad_value);
9270 ret = FALSE;
9271 goto copy_reloc;
9272 }
9273
9274 if (sda != NULL)
9275 {
9276 if (!is_static_defined (sda))
9277 {
9278 unresolved_reloc = TRUE;
9279 break;
9280 }
9281 addend -= SYM_VAL (sda);
9282 }
9283
9284 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
9285 if (reg == 0
9286 && (r_type == R_PPC_VLE_SDA21
9287 || r_type == R_PPC_VLE_SDA21_LO))
9288 {
9289 relocation = relocation + addend;
9290 addend = 0;
9291
9292 /* Force e_li insn, keeping RT from original insn. */
9293 insn &= 0x1f << 21;
9294 insn |= 28u << 26;
9295
9296 /* We have an li20 field, bits 17..20, 11..15, 21..31. */
9297 /* Top 4 bits of value to 17..20. */
9298 insn |= (relocation & 0xf0000) >> 5;
9299 /* Next 5 bits of the value to 11..15. */
9300 insn |= (relocation & 0xf800) << 5;
9301 /* And the final 11 bits of the value to bits 21 to 31. */
9302 insn |= relocation & 0x7ff;
9303
9304 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
9305
9306 if (r_type == R_PPC_VLE_SDA21
9307 && ((relocation + 0x80000) & 0xffffffff) > 0x100000)
9308 goto overflow;
9309 goto copy_reloc;
9310 }
9311 else if (r_type == R_PPC_EMB_SDA21
9312 || r_type == R_PPC_VLE_SDA21
9313 || r_type == R_PPC_VLE_SDA21_LO)
9314 {
9315 /* Fill in register field. */
9316 insn = (insn & ~RA_REGISTER_MASK) | (reg << RA_REGISTER_SHIFT);
9317 }
9318 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
9319 }
9320 break;
9321
9322 case R_PPC_VLE_SDAREL_LO16A:
9323 case R_PPC_VLE_SDAREL_LO16D:
9324 case R_PPC_VLE_SDAREL_HI16A:
9325 case R_PPC_VLE_SDAREL_HI16D:
9326 case R_PPC_VLE_SDAREL_HA16A:
9327 case R_PPC_VLE_SDAREL_HA16D:
9328 {
9329 bfd_vma value;
9330 const char *name;
9331 //int reg;
9332 struct elf_link_hash_entry *sda = NULL;
9333
9334 if (sec == NULL || sec->output_section == NULL)
9335 {
9336 unresolved_reloc = TRUE;
9337 break;
9338 }
9339
9340 name = bfd_get_section_name (output_bfd, sec->output_section);
9341 if (strcmp (name, ".sdata") == 0
9342 || strcmp (name, ".sbss") == 0)
9343 {
9344 //reg = 13;
9345 sda = htab->sdata[0].sym;
9346 }
9347 else if (strcmp (name, ".sdata2") == 0
9348 || strcmp (name, ".sbss2") == 0)
9349 {
9350 //reg = 2;
9351 sda = htab->sdata[1].sym;
9352 }
9353 else
9354 {
9355 _bfd_error_handler
9356 (_("%B: the target (%s) of a %s relocation is "
9357 "in the wrong output section (%s)"),
9358 input_bfd,
9359 sym_name,
9360 howto->name,
9361 name);
9362
9363 bfd_set_error (bfd_error_bad_value);
9364 ret = FALSE;
9365 goto copy_reloc;
9366 }
9367
9368 if (sda != NULL)
9369 {
9370 if (!is_static_defined (sda))
9371 {
9372 unresolved_reloc = TRUE;
9373 break;
9374 }
9375 }
9376
9377 value = (sda->root.u.def.section->output_section->vma
9378 + sda->root.u.def.section->output_offset
9379 + addend);
9380
9381 if (r_type == R_PPC_VLE_SDAREL_LO16A)
9382 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9383 value, split16a_type);
9384 else if (r_type == R_PPC_VLE_SDAREL_LO16D)
9385 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9386 value, split16d_type);
9387 else if (r_type == R_PPC_VLE_SDAREL_HI16A)
9388 {
9389 value = value >> 16;
9390 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9391 value, split16a_type);
9392 }
9393 else if (r_type == R_PPC_VLE_SDAREL_HI16D)
9394 {
9395 value = value >> 16;
9396 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9397 value, split16d_type);
9398 }
9399 else if (r_type == R_PPC_VLE_SDAREL_HA16A)
9400 {
9401 value = (value + 0x8000) >> 16;
9402 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9403 value, split16a_type);
9404 }
9405 else if (r_type == R_PPC_VLE_SDAREL_HA16D)
9406 {
9407 value = (value + 0x8000) >> 16;
9408 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9409 value, split16d_type);
9410 }
9411 }
9412 goto copy_reloc;
9413
9414 /* Relocate against the beginning of the section. */
9415 case R_PPC_SECTOFF:
9416 case R_PPC_SECTOFF_LO:
9417 case R_PPC_SECTOFF_HI:
9418 case R_PPC_SECTOFF_HA:
9419 if (sec == NULL || sec->output_section == NULL)
9420 {
9421 unresolved_reloc = TRUE;
9422 break;
9423 }
9424 addend -= sec->output_section->vma;
9425 break;
9426
9427 /* Negative relocations. */
9428 case R_PPC_EMB_NADDR32:
9429 case R_PPC_EMB_NADDR16:
9430 case R_PPC_EMB_NADDR16_LO:
9431 case R_PPC_EMB_NADDR16_HI:
9432 case R_PPC_EMB_NADDR16_HA:
9433 addend -= 2 * relocation;
9434 break;
9435
9436 case R_PPC_COPY:
9437 case R_PPC_GLOB_DAT:
9438 case R_PPC_JMP_SLOT:
9439 case R_PPC_RELATIVE:
9440 case R_PPC_IRELATIVE:
9441 case R_PPC_PLT32:
9442 case R_PPC_PLTREL32:
9443 case R_PPC_PLT16_LO:
9444 case R_PPC_PLT16_HI:
9445 case R_PPC_PLT16_HA:
9446 case R_PPC_ADDR30:
9447 case R_PPC_EMB_RELSEC16:
9448 case R_PPC_EMB_RELST_LO:
9449 case R_PPC_EMB_RELST_HI:
9450 case R_PPC_EMB_RELST_HA:
9451 case R_PPC_EMB_BIT_FLD:
9452 info->callbacks->einfo
9453 (_("%P: %B: relocation %s is not yet supported for symbol %s\n"),
9454 input_bfd,
9455 howto->name,
9456 sym_name);
9457
9458 bfd_set_error (bfd_error_invalid_operation);
9459 ret = FALSE;
9460 goto copy_reloc;
9461 }
9462
9463 /* Do any further special processing. */
9464 switch (r_type)
9465 {
9466 default:
9467 break;
9468
9469 case R_PPC_ADDR16_HA:
9470 case R_PPC_REL16_HA:
9471 case R_PPC_REL16DX_HA:
9472 case R_PPC_SECTOFF_HA:
9473 case R_PPC_TPREL16_HA:
9474 case R_PPC_DTPREL16_HA:
9475 case R_PPC_EMB_NADDR16_HA:
9476 case R_PPC_EMB_RELST_HA:
9477 /* It's just possible that this symbol is a weak symbol
9478 that's not actually defined anywhere. In that case,
9479 'sec' would be NULL, and we should leave the symbol
9480 alone (it will be set to zero elsewhere in the link). */
9481 if (sec == NULL)
9482 break;
9483 /* Fall thru */
9484
9485 case R_PPC_PLT16_HA:
9486 case R_PPC_GOT16_HA:
9487 case R_PPC_GOT_TLSGD16_HA:
9488 case R_PPC_GOT_TLSLD16_HA:
9489 case R_PPC_GOT_TPREL16_HA:
9490 case R_PPC_GOT_DTPREL16_HA:
9491 /* Add 0x10000 if sign bit in 0:15 is set.
9492 Bits 0:15 are not used. */
9493 addend += 0x8000;
9494 break;
9495
9496 case R_PPC_ADDR16:
9497 case R_PPC_ADDR16_LO:
9498 case R_PPC_GOT16:
9499 case R_PPC_GOT16_LO:
9500 case R_PPC_SDAREL16:
9501 case R_PPC_SECTOFF:
9502 case R_PPC_SECTOFF_LO:
9503 case R_PPC_DTPREL16:
9504 case R_PPC_DTPREL16_LO:
9505 case R_PPC_TPREL16:
9506 case R_PPC_TPREL16_LO:
9507 case R_PPC_GOT_TLSGD16:
9508 case R_PPC_GOT_TLSGD16_LO:
9509 case R_PPC_GOT_TLSLD16:
9510 case R_PPC_GOT_TLSLD16_LO:
9511 case R_PPC_GOT_DTPREL16:
9512 case R_PPC_GOT_DTPREL16_LO:
9513 case R_PPC_GOT_TPREL16:
9514 case R_PPC_GOT_TPREL16_LO:
9515 {
9516 /* The 32-bit ABI lacks proper relocations to deal with
9517 certain 64-bit instructions. Prevent damage to bits
9518 that make up part of the insn opcode. */
9519 unsigned int insn, mask, lobit;
9520
9521 insn = bfd_get_32 (output_bfd,
9522 contents + rel->r_offset - d_offset);
9523 mask = 0;
9524 if (is_insn_ds_form (insn))
9525 mask = 3;
9526 else if (is_insn_dq_form (insn))
9527 mask = 15;
9528 else
9529 break;
9530 relocation += addend;
9531 addend = insn & mask;
9532 lobit = mask & relocation;
9533 if (lobit != 0)
9534 {
9535 relocation ^= lobit;
9536 info->callbacks->einfo
9537 (_("%P: %H: error: %s against `%s' not a multiple of %u\n"),
9538 input_bfd, input_section, rel->r_offset,
9539 howto->name, sym_name, mask + 1);
9540 bfd_set_error (bfd_error_bad_value);
9541 ret = FALSE;
9542 }
9543 }
9544 break;
9545 }
9546
9547 #ifdef DEBUG
9548 fprintf (stderr, "\ttype = %s (%d), name = %s, symbol index = %ld, "
9549 "offset = %ld, addend = %ld\n",
9550 howto->name,
9551 (int) r_type,
9552 sym_name,
9553 r_symndx,
9554 (long) rel->r_offset,
9555 (long) addend);
9556 #endif
9557
9558 if (unresolved_reloc
9559 && !((input_section->flags & SEC_DEBUGGING) != 0
9560 && h->def_dynamic)
9561 && _bfd_elf_section_offset (output_bfd, info, input_section,
9562 rel->r_offset) != (bfd_vma) -1)
9563 {
9564 info->callbacks->einfo
9565 (_("%P: %H: unresolvable %s relocation against symbol `%s'\n"),
9566 input_bfd, input_section, rel->r_offset,
9567 howto->name,
9568 sym_name);
9569 ret = FALSE;
9570 }
9571
9572 /* 16-bit fields in insns mostly have signed values, but a
9573 few insns have 16-bit unsigned values. Really, we should
9574 have different reloc types. */
9575 if (howto->complain_on_overflow != complain_overflow_dont
9576 && howto->dst_mask == 0xffff
9577 && (input_section->flags & SEC_CODE) != 0)
9578 {
9579 enum complain_overflow complain = complain_overflow_signed;
9580
9581 if ((elf_section_flags (input_section) & SHF_PPC_VLE) == 0)
9582 {
9583 unsigned int insn;
9584
9585 insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
9586 if ((insn & (0x3f << 26)) == 10u << 26 /* cmpli */)
9587 complain = complain_overflow_bitfield;
9588 else if ((insn & (0x3f << 26)) == 28u << 26 /* andi */
9589 || (insn & (0x3f << 26)) == 24u << 26 /* ori */
9590 || (insn & (0x3f << 26)) == 26u << 26 /* xori */)
9591 complain = complain_overflow_unsigned;
9592 }
9593 if (howto->complain_on_overflow != complain)
9594 {
9595 alt_howto = *howto;
9596 alt_howto.complain_on_overflow = complain;
9597 howto = &alt_howto;
9598 }
9599 }
9600
9601 if (r_type == R_PPC_REL16DX_HA)
9602 {
9603 /* Split field reloc isn't handled by _bfd_final_link_relocate. */
9604 if (rel->r_offset + 4 > input_section->size)
9605 r = bfd_reloc_outofrange;
9606 else
9607 {
9608 unsigned int insn;
9609
9610 relocation += addend;
9611 relocation -= (rel->r_offset
9612 + input_section->output_offset
9613 + input_section->output_section->vma);
9614 relocation >>= 16;
9615 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
9616 insn &= ~0x1fffc1;
9617 insn |= (relocation & 0xffc1) | ((relocation & 0x3e) << 15);
9618 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
9619 r = bfd_reloc_ok;
9620 }
9621 }
9622 else
9623 r = _bfd_final_link_relocate (howto, input_bfd, input_section, contents,
9624 rel->r_offset, relocation, addend);
9625
9626 if (r != bfd_reloc_ok)
9627 {
9628 if (r == bfd_reloc_overflow)
9629 {
9630 overflow:
9631 /* On code like "if (foo) foo();" don't report overflow
9632 on a branch to zero when foo is undefined. */
9633 if (!warned
9634 && !(h != NULL
9635 && (h->root.type == bfd_link_hash_undefweak
9636 || h->root.type == bfd_link_hash_undefined)
9637 && is_branch_reloc (r_type)))
9638 info->callbacks->reloc_overflow
9639 (info, (h ? &h->root : NULL), sym_name, howto->name,
9640 rel->r_addend, input_bfd, input_section, rel->r_offset);
9641 }
9642 else
9643 {
9644 info->callbacks->einfo
9645 (_("%P: %H: %s reloc against `%s': error %d\n"),
9646 input_bfd, input_section, rel->r_offset,
9647 howto->name, sym_name, (int) r);
9648 ret = FALSE;
9649 }
9650 }
9651 copy_reloc:
9652 if (wrel != rel)
9653 *wrel = *rel;
9654 }
9655
9656 if (wrel != rel)
9657 {
9658 Elf_Internal_Shdr *rel_hdr;
9659 size_t deleted = rel - wrel;
9660
9661 rel_hdr = _bfd_elf_single_rel_hdr (input_section->output_section);
9662 rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted;
9663 if (rel_hdr->sh_size == 0)
9664 {
9665 /* It is too late to remove an empty reloc section. Leave
9666 one NONE reloc.
9667 ??? What is wrong with an empty section??? */
9668 rel_hdr->sh_size = rel_hdr->sh_entsize;
9669 deleted -= 1;
9670 wrel++;
9671 }
9672 relend = wrel;
9673 rel_hdr = _bfd_elf_single_rel_hdr (input_section);
9674 rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted;
9675 input_section->reloc_count -= deleted;
9676 }
9677
9678 #ifdef DEBUG
9679 fprintf (stderr, "\n");
9680 #endif
9681
9682 if (input_section->sec_info_type == SEC_INFO_TYPE_TARGET
9683 && input_section->size != input_section->rawsize
9684 && (strcmp (input_section->output_section->name, ".init") == 0
9685 || strcmp (input_section->output_section->name, ".fini") == 0))
9686 {
9687 /* Branch around the trampolines. */
9688 unsigned int insn = B + input_section->size - input_section->rawsize;
9689 bfd_put_32 (input_bfd, insn, contents + input_section->rawsize);
9690 }
9691
9692 if (htab->params->ppc476_workaround
9693 && input_section->sec_info_type == SEC_INFO_TYPE_TARGET
9694 && (!bfd_link_relocatable (info)
9695 || (input_section->output_section->alignment_power
9696 >= htab->params->pagesize_p2)))
9697 {
9698 bfd_vma start_addr, end_addr, addr;
9699 bfd_vma pagesize = (bfd_vma) 1 << htab->params->pagesize_p2;
9700
9701 if (relax_info->workaround_size != 0)
9702 {
9703 bfd_byte *p;
9704 unsigned int n;
9705 bfd_byte fill[4];
9706
9707 bfd_put_32 (input_bfd, BA, fill);
9708 p = contents + input_section->size - relax_info->workaround_size;
9709 n = relax_info->workaround_size >> 2;
9710 while (n--)
9711 {
9712 memcpy (p, fill, 4);
9713 p += 4;
9714 }
9715 }
9716
9717 /* The idea is: Replace the last instruction on a page with a
9718 branch to a patch area. Put the insn there followed by a
9719 branch back to the next page. Complicated a little by
9720 needing to handle moved conditional branches, and by not
9721 wanting to touch data-in-text. */
9722
9723 start_addr = (input_section->output_section->vma
9724 + input_section->output_offset);
9725 end_addr = (start_addr + input_section->size
9726 - relax_info->workaround_size);
9727 for (addr = ((start_addr & -pagesize) + pagesize - 4);
9728 addr < end_addr;
9729 addr += pagesize)
9730 {
9731 bfd_vma offset = addr - start_addr;
9732 Elf_Internal_Rela *lo, *hi;
9733 bfd_boolean is_data;
9734 bfd_vma patch_off, patch_addr;
9735 unsigned int insn;
9736
9737 /* Do we have a data reloc at this offset? If so, leave
9738 the word alone. */
9739 is_data = FALSE;
9740 lo = relocs;
9741 hi = relend;
9742 rel = NULL;
9743 while (lo < hi)
9744 {
9745 rel = lo + (hi - lo) / 2;
9746 if (rel->r_offset < offset)
9747 lo = rel + 1;
9748 else if (rel->r_offset > offset + 3)
9749 hi = rel;
9750 else
9751 {
9752 switch (ELF32_R_TYPE (rel->r_info))
9753 {
9754 case R_PPC_ADDR32:
9755 case R_PPC_UADDR32:
9756 case R_PPC_REL32:
9757 case R_PPC_ADDR30:
9758 is_data = TRUE;
9759 break;
9760 default:
9761 break;
9762 }
9763 break;
9764 }
9765 }
9766 if (is_data)
9767 continue;
9768
9769 /* Some instructions can be left alone too. Unconditional
9770 branches, except for bcctr with BO=0x14 (bctr, bctrl),
9771 avoid the icache failure.
9772
9773 The problem occurs due to prefetch across a page boundary
9774 where stale instructions can be fetched from the next
9775 page, and the mechanism for flushing these bad
9776 instructions fails under certain circumstances. The
9777 unconditional branches:
9778 1) Branch: b, bl, ba, bla,
9779 2) Branch Conditional: bc, bca, bcl, bcla,
9780 3) Branch Conditional to Link Register: bclr, bclrl,
9781 where (2) and (3) have BO=0x14 making them unconditional,
9782 prevent the bad prefetch because the prefetch itself is
9783 affected by these instructions. This happens even if the
9784 instruction is not executed.
9785
9786 A bctr example:
9787 .
9788 . lis 9,new_page@ha
9789 . addi 9,9,new_page@l
9790 . mtctr 9
9791 . bctr
9792 . nop
9793 . nop
9794 . new_page:
9795 .
9796 The bctr is not predicted taken due to ctr not being
9797 ready, so prefetch continues on past the bctr into the
9798 new page which might have stale instructions. If they
9799 fail to be flushed, then they will be executed after the
9800 bctr executes. Either of the following modifications
9801 prevent the bad prefetch from happening in the first
9802 place:
9803 .
9804 . lis 9,new_page@ha lis 9,new_page@ha
9805 . addi 9,9,new_page@l addi 9,9,new_page@l
9806 . mtctr 9 mtctr 9
9807 . bctr bctr
9808 . nop b somewhere_else
9809 . b somewhere_else nop
9810 . new_page: new_page:
9811 . */
9812 insn = bfd_get_32 (input_bfd, contents + offset);
9813 if ((insn & (0x3f << 26)) == (18u << 26) /* b,bl,ba,bla */
9814 || ((insn & (0x3f << 26)) == (16u << 26) /* bc,bcl,bca,bcla*/
9815 && (insn & (0x14 << 21)) == (0x14 << 21)) /* with BO=0x14 */
9816 || ((insn & (0x3f << 26)) == (19u << 26)
9817 && (insn & (0x3ff << 1)) == (16u << 1) /* bclr,bclrl */
9818 && (insn & (0x14 << 21)) == (0x14 << 21)))/* with BO=0x14 */
9819 continue;
9820
9821 patch_addr = (start_addr + input_section->size
9822 - relax_info->workaround_size);
9823 patch_addr = (patch_addr + 15) & -16;
9824 patch_off = patch_addr - start_addr;
9825 bfd_put_32 (input_bfd, B + patch_off - offset, contents + offset);
9826
9827 if (rel != NULL
9828 && rel->r_offset >= offset
9829 && rel->r_offset < offset + 4)
9830 {
9831 asection *sreloc;
9832
9833 /* If the insn we are patching had a reloc, adjust the
9834 reloc r_offset so that the reloc applies to the moved
9835 location. This matters for -r and --emit-relocs. */
9836 if (rel + 1 != relend)
9837 {
9838 Elf_Internal_Rela tmp = *rel;
9839
9840 /* Keep the relocs sorted by r_offset. */
9841 memmove (rel, rel + 1, (relend - (rel + 1)) * sizeof (*rel));
9842 relend[-1] = tmp;
9843 }
9844 relend[-1].r_offset += patch_off - offset;
9845
9846 /* Adjust REL16 addends too. */
9847 switch (ELF32_R_TYPE (relend[-1].r_info))
9848 {
9849 case R_PPC_REL16:
9850 case R_PPC_REL16_LO:
9851 case R_PPC_REL16_HI:
9852 case R_PPC_REL16_HA:
9853 relend[-1].r_addend += patch_off - offset;
9854 break;
9855 default:
9856 break;
9857 }
9858
9859 /* If we are building a PIE or shared library with
9860 non-PIC objects, perhaps we had a dynamic reloc too?
9861 If so, the dynamic reloc must move with the insn. */
9862 sreloc = elf_section_data (input_section)->sreloc;
9863 if (sreloc != NULL)
9864 {
9865 Elf32_External_Rela *slo, *shi, *srelend;
9866 bfd_vma soffset;
9867
9868 slo = (Elf32_External_Rela *) sreloc->contents;
9869 shi = srelend = slo + sreloc->reloc_count;
9870 soffset = (offset + input_section->output_section->vma
9871 + input_section->output_offset);
9872 while (slo < shi)
9873 {
9874 Elf32_External_Rela *srel = slo + (shi - slo) / 2;
9875 bfd_elf32_swap_reloca_in (output_bfd, (bfd_byte *) srel,
9876 &outrel);
9877 if (outrel.r_offset < soffset)
9878 slo = srel + 1;
9879 else if (outrel.r_offset > soffset + 3)
9880 shi = srel;
9881 else
9882 {
9883 if (srel + 1 != srelend)
9884 {
9885 memmove (srel, srel + 1,
9886 (srelend - (srel + 1)) * sizeof (*srel));
9887 srel = srelend - 1;
9888 }
9889 outrel.r_offset += patch_off - offset;
9890 bfd_elf32_swap_reloca_out (output_bfd, &outrel,
9891 (bfd_byte *) srel);
9892 break;
9893 }
9894 }
9895 }
9896 }
9897 else
9898 rel = NULL;
9899
9900 if ((insn & (0x3f << 26)) == (16u << 26) /* bc */
9901 && (insn & 2) == 0 /* relative */)
9902 {
9903 bfd_vma delta = ((insn & 0xfffc) ^ 0x8000) - 0x8000;
9904
9905 delta += offset - patch_off;
9906 if (bfd_link_relocatable (info) && rel != NULL)
9907 delta = 0;
9908 if (!bfd_link_relocatable (info) && rel != NULL)
9909 {
9910 enum elf_ppc_reloc_type r_type;
9911
9912 r_type = ELF32_R_TYPE (relend[-1].r_info);
9913 if (r_type == R_PPC_REL14_BRTAKEN)
9914 insn |= BRANCH_PREDICT_BIT;
9915 else if (r_type == R_PPC_REL14_BRNTAKEN)
9916 insn &= ~BRANCH_PREDICT_BIT;
9917 else
9918 BFD_ASSERT (r_type == R_PPC_REL14);
9919
9920 if ((r_type == R_PPC_REL14_BRTAKEN
9921 || r_type == R_PPC_REL14_BRNTAKEN)
9922 && delta + 0x8000 < 0x10000
9923 && (bfd_signed_vma) delta < 0)
9924 insn ^= BRANCH_PREDICT_BIT;
9925 }
9926 if (delta + 0x8000 < 0x10000)
9927 {
9928 bfd_put_32 (input_bfd,
9929 (insn & ~0xfffc) | (delta & 0xfffc),
9930 contents + patch_off);
9931 patch_off += 4;
9932 bfd_put_32 (input_bfd,
9933 B | ((offset + 4 - patch_off) & 0x3fffffc),
9934 contents + patch_off);
9935 patch_off += 4;
9936 }
9937 else
9938 {
9939 if (rel != NULL)
9940 {
9941 unsigned int r_sym = ELF32_R_SYM (relend[-1].r_info);
9942
9943 relend[-1].r_offset += 8;
9944 relend[-1].r_info = ELF32_R_INFO (r_sym, R_PPC_REL24);
9945 }
9946 bfd_put_32 (input_bfd,
9947 (insn & ~0xfffc) | 8,
9948 contents + patch_off);
9949 patch_off += 4;
9950 bfd_put_32 (input_bfd,
9951 B | ((offset + 4 - patch_off) & 0x3fffffc),
9952 contents + patch_off);
9953 patch_off += 4;
9954 bfd_put_32 (input_bfd,
9955 B | ((delta - 8) & 0x3fffffc),
9956 contents + patch_off);
9957 patch_off += 4;
9958 }
9959 }
9960 else
9961 {
9962 bfd_put_32 (input_bfd, insn, contents + patch_off);
9963 patch_off += 4;
9964 bfd_put_32 (input_bfd,
9965 B | ((offset + 4 - patch_off) & 0x3fffffc),
9966 contents + patch_off);
9967 patch_off += 4;
9968 }
9969 BFD_ASSERT (patch_off <= input_section->size);
9970 relax_info->workaround_size = input_section->size - patch_off;
9971 }
9972 }
9973
9974 return ret;
9975 }
9976 \f
9977 /* Finish up dynamic symbol handling. We set the contents of various
9978 dynamic sections here. */
9979
9980 static bfd_boolean
9981 ppc_elf_finish_dynamic_symbol (bfd *output_bfd,
9982 struct bfd_link_info *info,
9983 struct elf_link_hash_entry *h,
9984 Elf_Internal_Sym *sym)
9985 {
9986 struct ppc_elf_link_hash_table *htab;
9987 struct plt_entry *ent;
9988 bfd_boolean doneone;
9989
9990 #ifdef DEBUG
9991 fprintf (stderr, "ppc_elf_finish_dynamic_symbol called for %s",
9992 h->root.root.string);
9993 #endif
9994
9995 htab = ppc_elf_hash_table (info);
9996 BFD_ASSERT (htab->elf.dynobj != NULL);
9997
9998 doneone = FALSE;
9999 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
10000 if (ent->plt.offset != (bfd_vma) -1)
10001 {
10002 if (!doneone)
10003 {
10004 Elf_Internal_Rela rela;
10005 bfd_byte *loc;
10006 bfd_vma reloc_index;
10007
10008 if (htab->plt_type == PLT_NEW
10009 || !htab->elf.dynamic_sections_created
10010 || h->dynindx == -1)
10011 reloc_index = ent->plt.offset / 4;
10012 else
10013 {
10014 reloc_index = ((ent->plt.offset - htab->plt_initial_entry_size)
10015 / htab->plt_slot_size);
10016 if (reloc_index > PLT_NUM_SINGLE_ENTRIES
10017 && htab->plt_type == PLT_OLD)
10018 reloc_index -= (reloc_index - PLT_NUM_SINGLE_ENTRIES) / 2;
10019 }
10020
10021 /* This symbol has an entry in the procedure linkage table.
10022 Set it up. */
10023 if (htab->plt_type == PLT_VXWORKS
10024 && htab->elf.dynamic_sections_created
10025 && h->dynindx != -1)
10026 {
10027 bfd_vma got_offset;
10028 const bfd_vma *plt_entry;
10029
10030 /* The first three entries in .got.plt are reserved. */
10031 got_offset = (reloc_index + 3) * 4;
10032
10033 /* Use the right PLT. */
10034 plt_entry = bfd_link_pic (info) ? ppc_elf_vxworks_pic_plt_entry
10035 : ppc_elf_vxworks_plt_entry;
10036
10037 /* Fill in the .plt on VxWorks. */
10038 if (bfd_link_pic (info))
10039 {
10040 bfd_put_32 (output_bfd,
10041 plt_entry[0] | PPC_HA (got_offset),
10042 htab->plt->contents + ent->plt.offset + 0);
10043 bfd_put_32 (output_bfd,
10044 plt_entry[1] | PPC_LO (got_offset),
10045 htab->plt->contents + ent->plt.offset + 4);
10046 }
10047 else
10048 {
10049 bfd_vma got_loc = got_offset + SYM_VAL (htab->elf.hgot);
10050
10051 bfd_put_32 (output_bfd,
10052 plt_entry[0] | PPC_HA (got_loc),
10053 htab->plt->contents + ent->plt.offset + 0);
10054 bfd_put_32 (output_bfd,
10055 plt_entry[1] | PPC_LO (got_loc),
10056 htab->plt->contents + ent->plt.offset + 4);
10057 }
10058
10059 bfd_put_32 (output_bfd, plt_entry[2],
10060 htab->plt->contents + ent->plt.offset + 8);
10061 bfd_put_32 (output_bfd, plt_entry[3],
10062 htab->plt->contents + ent->plt.offset + 12);
10063
10064 /* This instruction is an immediate load. The value loaded is
10065 the byte offset of the R_PPC_JMP_SLOT relocation from the
10066 start of the .rela.plt section. The value is stored in the
10067 low-order 16 bits of the load instruction. */
10068 /* NOTE: It appears that this is now an index rather than a
10069 prescaled offset. */
10070 bfd_put_32 (output_bfd,
10071 plt_entry[4] | reloc_index,
10072 htab->plt->contents + ent->plt.offset + 16);
10073 /* This instruction is a PC-relative branch whose target is
10074 the start of the PLT section. The address of this branch
10075 instruction is 20 bytes beyond the start of this PLT entry.
10076 The address is encoded in bits 6-29, inclusive. The value
10077 stored is right-shifted by two bits, permitting a 26-bit
10078 offset. */
10079 bfd_put_32 (output_bfd,
10080 (plt_entry[5]
10081 | (-(ent->plt.offset + 20) & 0x03fffffc)),
10082 htab->plt->contents + ent->plt.offset + 20);
10083 bfd_put_32 (output_bfd, plt_entry[6],
10084 htab->plt->contents + ent->plt.offset + 24);
10085 bfd_put_32 (output_bfd, plt_entry[7],
10086 htab->plt->contents + ent->plt.offset + 28);
10087
10088 /* Fill in the GOT entry corresponding to this PLT slot with
10089 the address immediately after the "bctr" instruction
10090 in this PLT entry. */
10091 bfd_put_32 (output_bfd, (htab->plt->output_section->vma
10092 + htab->plt->output_offset
10093 + ent->plt.offset + 16),
10094 htab->sgotplt->contents + got_offset);
10095
10096 if (!bfd_link_pic (info))
10097 {
10098 /* Fill in a couple of entries in .rela.plt.unloaded. */
10099 loc = htab->srelplt2->contents
10100 + ((VXWORKS_PLTRESOLVE_RELOCS + reloc_index
10101 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS)
10102 * sizeof (Elf32_External_Rela));
10103
10104 /* Provide the @ha relocation for the first instruction. */
10105 rela.r_offset = (htab->plt->output_section->vma
10106 + htab->plt->output_offset
10107 + ent->plt.offset + 2);
10108 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
10109 R_PPC_ADDR16_HA);
10110 rela.r_addend = got_offset;
10111 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10112 loc += sizeof (Elf32_External_Rela);
10113
10114 /* Provide the @l relocation for the second instruction. */
10115 rela.r_offset = (htab->plt->output_section->vma
10116 + htab->plt->output_offset
10117 + ent->plt.offset + 6);
10118 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
10119 R_PPC_ADDR16_LO);
10120 rela.r_addend = got_offset;
10121 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10122 loc += sizeof (Elf32_External_Rela);
10123
10124 /* Provide a relocation for the GOT entry corresponding to this
10125 PLT slot. Point it at the middle of the .plt entry. */
10126 rela.r_offset = (htab->sgotplt->output_section->vma
10127 + htab->sgotplt->output_offset
10128 + got_offset);
10129 rela.r_info = ELF32_R_INFO (htab->elf.hplt->indx,
10130 R_PPC_ADDR32);
10131 rela.r_addend = ent->plt.offset + 16;
10132 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10133 }
10134
10135 /* VxWorks uses non-standard semantics for R_PPC_JMP_SLOT.
10136 In particular, the offset for the relocation is not the
10137 address of the PLT entry for this function, as specified
10138 by the ABI. Instead, the offset is set to the address of
10139 the GOT slot for this function. See EABI 4.4.4.1. */
10140 rela.r_offset = (htab->sgotplt->output_section->vma
10141 + htab->sgotplt->output_offset
10142 + got_offset);
10143
10144 }
10145 else
10146 {
10147 asection *splt = htab->plt;
10148 if (!htab->elf.dynamic_sections_created
10149 || h->dynindx == -1)
10150 splt = htab->iplt;
10151
10152 rela.r_offset = (splt->output_section->vma
10153 + splt->output_offset
10154 + ent->plt.offset);
10155 if (htab->plt_type == PLT_OLD
10156 || !htab->elf.dynamic_sections_created
10157 || h->dynindx == -1)
10158 {
10159 /* We don't need to fill in the .plt. The ppc dynamic
10160 linker will fill it in. */
10161 }
10162 else
10163 {
10164 bfd_vma val = (htab->glink_pltresolve + ent->plt.offset
10165 + htab->glink->output_section->vma
10166 + htab->glink->output_offset);
10167 bfd_put_32 (output_bfd, val,
10168 splt->contents + ent->plt.offset);
10169 }
10170 }
10171
10172 /* Fill in the entry in the .rela.plt section. */
10173 rela.r_addend = 0;
10174 if (!htab->elf.dynamic_sections_created
10175 || h->dynindx == -1)
10176 {
10177 BFD_ASSERT (h->type == STT_GNU_IFUNC
10178 && h->def_regular
10179 && (h->root.type == bfd_link_hash_defined
10180 || h->root.type == bfd_link_hash_defweak));
10181 rela.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
10182 rela.r_addend = SYM_VAL (h);
10183 }
10184 else
10185 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_JMP_SLOT);
10186
10187 if (!htab->elf.dynamic_sections_created
10188 || h->dynindx == -1)
10189 loc = (htab->reliplt->contents
10190 + (htab->reliplt->reloc_count++
10191 * sizeof (Elf32_External_Rela)));
10192 else
10193 loc = (htab->relplt->contents
10194 + reloc_index * sizeof (Elf32_External_Rela));
10195 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10196
10197 if (!h->def_regular)
10198 {
10199 /* Mark the symbol as undefined, rather than as
10200 defined in the .plt section. Leave the value if
10201 there were any relocations where pointer equality
10202 matters (this is a clue for the dynamic linker, to
10203 make function pointer comparisons work between an
10204 application and shared library), otherwise set it
10205 to zero. */
10206 sym->st_shndx = SHN_UNDEF;
10207 if (!h->pointer_equality_needed)
10208 sym->st_value = 0;
10209 else if (!h->ref_regular_nonweak)
10210 {
10211 /* This breaks function pointer comparisons, but
10212 that is better than breaking tests for a NULL
10213 function pointer. */
10214 sym->st_value = 0;
10215 }
10216 }
10217 else if (h->type == STT_GNU_IFUNC
10218 && !bfd_link_pic (info))
10219 {
10220 /* Set the value of ifunc symbols in a non-pie
10221 executable to the glink entry. This is to avoid
10222 text relocations. We can't do this for ifunc in
10223 allocate_dynrelocs, as we do for normal dynamic
10224 function symbols with plt entries, because we need
10225 to keep the original value around for the ifunc
10226 relocation. */
10227 sym->st_shndx = (_bfd_elf_section_from_bfd_section
10228 (output_bfd, htab->glink->output_section));
10229 sym->st_value = (ent->glink_offset
10230 + htab->glink->output_offset
10231 + htab->glink->output_section->vma);
10232 }
10233 doneone = TRUE;
10234 }
10235
10236 if (htab->plt_type == PLT_NEW
10237 || !htab->elf.dynamic_sections_created
10238 || h->dynindx == -1)
10239 {
10240 unsigned char *p;
10241 asection *splt = htab->plt;
10242 if (!htab->elf.dynamic_sections_created
10243 || h->dynindx == -1)
10244 splt = htab->iplt;
10245
10246 p = (unsigned char *) htab->glink->contents + ent->glink_offset;
10247
10248 if (h == htab->tls_get_addr && !htab->params->no_tls_get_addr_opt)
10249 {
10250 bfd_put_32 (output_bfd, LWZ_11_3, p);
10251 p += 4;
10252 bfd_put_32 (output_bfd, LWZ_12_3 + 4, p);
10253 p += 4;
10254 bfd_put_32 (output_bfd, MR_0_3, p);
10255 p += 4;
10256 bfd_put_32 (output_bfd, CMPWI_11_0, p);
10257 p += 4;
10258 bfd_put_32 (output_bfd, ADD_3_12_2, p);
10259 p += 4;
10260 bfd_put_32 (output_bfd, BEQLR, p);
10261 p += 4;
10262 bfd_put_32 (output_bfd, MR_3_0, p);
10263 p += 4;
10264 bfd_put_32 (output_bfd, NOP, p);
10265 p += 4;
10266 }
10267
10268 write_glink_stub (ent, splt, p, info);
10269
10270 if (!bfd_link_pic (info))
10271 /* We only need one non-PIC glink stub. */
10272 break;
10273 }
10274 else
10275 break;
10276 }
10277
10278 if (h->needs_copy)
10279 {
10280 asection *s;
10281 Elf_Internal_Rela rela;
10282 bfd_byte *loc;
10283
10284 /* This symbols needs a copy reloc. Set it up. */
10285
10286 #ifdef DEBUG
10287 fprintf (stderr, ", copy");
10288 #endif
10289
10290 BFD_ASSERT (h->dynindx != -1);
10291
10292 if (ppc_elf_hash_entry (h)->has_sda_refs)
10293 s = htab->relsbss;
10294 else
10295 s = htab->relbss;
10296 BFD_ASSERT (s != NULL);
10297
10298 rela.r_offset = SYM_VAL (h);
10299 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_COPY);
10300 rela.r_addend = 0;
10301 loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
10302 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10303 }
10304
10305 #ifdef DEBUG
10306 fprintf (stderr, "\n");
10307 #endif
10308
10309 return TRUE;
10310 }
10311 \f
10312 static enum elf_reloc_type_class
10313 ppc_elf_reloc_type_class (const struct bfd_link_info *info,
10314 const asection *rel_sec,
10315 const Elf_Internal_Rela *rela)
10316 {
10317 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
10318
10319 if (rel_sec == htab->reliplt)
10320 return reloc_class_ifunc;
10321
10322 switch (ELF32_R_TYPE (rela->r_info))
10323 {
10324 case R_PPC_RELATIVE:
10325 return reloc_class_relative;
10326 case R_PPC_JMP_SLOT:
10327 return reloc_class_plt;
10328 case R_PPC_COPY:
10329 return reloc_class_copy;
10330 default:
10331 return reloc_class_normal;
10332 }
10333 }
10334 \f
10335 /* Finish up the dynamic sections. */
10336
10337 static bfd_boolean
10338 ppc_elf_finish_dynamic_sections (bfd *output_bfd,
10339 struct bfd_link_info *info)
10340 {
10341 asection *sdyn;
10342 asection *splt;
10343 struct ppc_elf_link_hash_table *htab;
10344 bfd_vma got;
10345 bfd *dynobj;
10346 bfd_boolean ret = TRUE;
10347
10348 #ifdef DEBUG
10349 fprintf (stderr, "ppc_elf_finish_dynamic_sections called\n");
10350 #endif
10351
10352 htab = ppc_elf_hash_table (info);
10353 dynobj = elf_hash_table (info)->dynobj;
10354 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
10355 if (htab->is_vxworks)
10356 splt = bfd_get_linker_section (dynobj, ".plt");
10357 else
10358 splt = NULL;
10359
10360 got = 0;
10361 if (htab->elf.hgot != NULL)
10362 got = SYM_VAL (htab->elf.hgot);
10363
10364 if (htab->elf.dynamic_sections_created)
10365 {
10366 Elf32_External_Dyn *dyncon, *dynconend;
10367
10368 BFD_ASSERT (htab->plt != NULL && sdyn != NULL);
10369
10370 dyncon = (Elf32_External_Dyn *) sdyn->contents;
10371 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
10372 for (; dyncon < dynconend; dyncon++)
10373 {
10374 Elf_Internal_Dyn dyn;
10375 asection *s;
10376
10377 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
10378
10379 switch (dyn.d_tag)
10380 {
10381 case DT_PLTGOT:
10382 if (htab->is_vxworks)
10383 s = htab->sgotplt;
10384 else
10385 s = htab->plt;
10386 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
10387 break;
10388
10389 case DT_PLTRELSZ:
10390 dyn.d_un.d_val = htab->relplt->size;
10391 break;
10392
10393 case DT_JMPREL:
10394 s = htab->relplt;
10395 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
10396 break;
10397
10398 case DT_PPC_GOT:
10399 dyn.d_un.d_ptr = got;
10400 break;
10401
10402 case DT_RELASZ:
10403 if (htab->is_vxworks)
10404 {
10405 if (htab->relplt)
10406 dyn.d_un.d_ptr -= htab->relplt->size;
10407 break;
10408 }
10409 continue;
10410
10411 default:
10412 if (htab->is_vxworks
10413 && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn))
10414 break;
10415 continue;
10416 }
10417
10418 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
10419 }
10420 }
10421
10422 if (htab->got != NULL)
10423 {
10424 if (htab->elf.hgot->root.u.def.section == htab->got
10425 || htab->elf.hgot->root.u.def.section == htab->sgotplt)
10426 {
10427 unsigned char *p = htab->elf.hgot->root.u.def.section->contents;
10428
10429 p += htab->elf.hgot->root.u.def.value;
10430 if (htab->plt_type == PLT_OLD)
10431 {
10432 /* Add a blrl instruction at _GLOBAL_OFFSET_TABLE_-4
10433 so that a function can easily find the address of
10434 _GLOBAL_OFFSET_TABLE_. */
10435 BFD_ASSERT (htab->elf.hgot->root.u.def.value - 4
10436 < htab->elf.hgot->root.u.def.section->size);
10437 bfd_put_32 (output_bfd, 0x4e800021, p - 4);
10438 }
10439
10440 if (sdyn != NULL)
10441 {
10442 bfd_vma val = sdyn->output_section->vma + sdyn->output_offset;
10443 BFD_ASSERT (htab->elf.hgot->root.u.def.value
10444 < htab->elf.hgot->root.u.def.section->size);
10445 bfd_put_32 (output_bfd, val, p);
10446 }
10447 }
10448 else
10449 {
10450 info->callbacks->einfo (_("%P: %s not defined in linker created %s\n"),
10451 htab->elf.hgot->root.root.string,
10452 (htab->sgotplt != NULL
10453 ? htab->sgotplt->name : htab->got->name));
10454 bfd_set_error (bfd_error_bad_value);
10455 ret = FALSE;
10456 }
10457
10458 elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 4;
10459 }
10460
10461 /* Fill in the first entry in the VxWorks procedure linkage table. */
10462 if (splt && splt->size > 0)
10463 {
10464 /* Use the right PLT. */
10465 const bfd_vma *plt_entry = (bfd_link_pic (info)
10466 ? ppc_elf_vxworks_pic_plt0_entry
10467 : ppc_elf_vxworks_plt0_entry);
10468
10469 if (!bfd_link_pic (info))
10470 {
10471 bfd_vma got_value = SYM_VAL (htab->elf.hgot);
10472
10473 bfd_put_32 (output_bfd, plt_entry[0] | PPC_HA (got_value),
10474 splt->contents + 0);
10475 bfd_put_32 (output_bfd, plt_entry[1] | PPC_LO (got_value),
10476 splt->contents + 4);
10477 }
10478 else
10479 {
10480 bfd_put_32 (output_bfd, plt_entry[0], splt->contents + 0);
10481 bfd_put_32 (output_bfd, plt_entry[1], splt->contents + 4);
10482 }
10483 bfd_put_32 (output_bfd, plt_entry[2], splt->contents + 8);
10484 bfd_put_32 (output_bfd, plt_entry[3], splt->contents + 12);
10485 bfd_put_32 (output_bfd, plt_entry[4], splt->contents + 16);
10486 bfd_put_32 (output_bfd, plt_entry[5], splt->contents + 20);
10487 bfd_put_32 (output_bfd, plt_entry[6], splt->contents + 24);
10488 bfd_put_32 (output_bfd, plt_entry[7], splt->contents + 28);
10489
10490 if (! bfd_link_pic (info))
10491 {
10492 Elf_Internal_Rela rela;
10493 bfd_byte *loc;
10494
10495 loc = htab->srelplt2->contents;
10496
10497 /* Output the @ha relocation for the first instruction. */
10498 rela.r_offset = (htab->plt->output_section->vma
10499 + htab->plt->output_offset
10500 + 2);
10501 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
10502 rela.r_addend = 0;
10503 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10504 loc += sizeof (Elf32_External_Rela);
10505
10506 /* Output the @l relocation for the second instruction. */
10507 rela.r_offset = (htab->plt->output_section->vma
10508 + htab->plt->output_offset
10509 + 6);
10510 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
10511 rela.r_addend = 0;
10512 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10513 loc += sizeof (Elf32_External_Rela);
10514
10515 /* Fix up the remaining relocations. They may have the wrong
10516 symbol index for _G_O_T_ or _P_L_T_ depending on the order
10517 in which symbols were output. */
10518 while (loc < htab->srelplt2->contents + htab->srelplt2->size)
10519 {
10520 Elf_Internal_Rela rel;
10521
10522 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
10523 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
10524 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
10525 loc += sizeof (Elf32_External_Rela);
10526
10527 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
10528 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
10529 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
10530 loc += sizeof (Elf32_External_Rela);
10531
10532 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
10533 rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_PPC_ADDR32);
10534 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
10535 loc += sizeof (Elf32_External_Rela);
10536 }
10537 }
10538 }
10539
10540 if (htab->glink != NULL
10541 && htab->glink->contents != NULL
10542 && htab->elf.dynamic_sections_created)
10543 {
10544 unsigned char *p;
10545 unsigned char *endp;
10546 bfd_vma res0;
10547 unsigned int i;
10548
10549 /*
10550 * PIC glink code is the following:
10551 *
10552 * # ith PLT code stub.
10553 * addis 11,30,(plt+(i-1)*4-got)@ha
10554 * lwz 11,(plt+(i-1)*4-got)@l(11)
10555 * mtctr 11
10556 * bctr
10557 *
10558 * # A table of branches, one for each plt entry.
10559 * # The idea is that the plt call stub loads ctr and r11 with these
10560 * # addresses, so (r11 - res_0) gives the plt index * 4.
10561 * res_0: b PLTresolve
10562 * res_1: b PLTresolve
10563 * .
10564 * # Some number of entries towards the end can be nops
10565 * res_n_m3: nop
10566 * res_n_m2: nop
10567 * res_n_m1:
10568 *
10569 * PLTresolve:
10570 * addis 11,11,(1f-res_0)@ha
10571 * mflr 0
10572 * bcl 20,31,1f
10573 * 1: addi 11,11,(1b-res_0)@l
10574 * mflr 12
10575 * mtlr 0
10576 * sub 11,11,12 # r11 = index * 4
10577 * addis 12,12,(got+4-1b)@ha
10578 * lwz 0,(got+4-1b)@l(12) # got[1] address of dl_runtime_resolve
10579 * lwz 12,(got+8-1b)@l(12) # got[2] contains the map address
10580 * mtctr 0
10581 * add 0,11,11
10582 * add 11,0,11 # r11 = index * 12 = reloc offset.
10583 * bctr
10584 */
10585 static const unsigned int pic_plt_resolve[] =
10586 {
10587 ADDIS_11_11,
10588 MFLR_0,
10589 BCL_20_31,
10590 ADDI_11_11,
10591 MFLR_12,
10592 MTLR_0,
10593 SUB_11_11_12,
10594 ADDIS_12_12,
10595 LWZ_0_12,
10596 LWZ_12_12,
10597 MTCTR_0,
10598 ADD_0_11_11,
10599 ADD_11_0_11,
10600 BCTR,
10601 NOP,
10602 NOP
10603 };
10604
10605 /*
10606 * Non-PIC glink code is a little simpler.
10607 *
10608 * # ith PLT code stub.
10609 * lis 11,(plt+(i-1)*4)@ha
10610 * lwz 11,(plt+(i-1)*4)@l(11)
10611 * mtctr 11
10612 * bctr
10613 *
10614 * The branch table is the same, then comes
10615 *
10616 * PLTresolve:
10617 * lis 12,(got+4)@ha
10618 * addis 11,11,(-res_0)@ha
10619 * lwz 0,(got+4)@l(12) # got[1] address of dl_runtime_resolve
10620 * addi 11,11,(-res_0)@l # r11 = index * 4
10621 * mtctr 0
10622 * add 0,11,11
10623 * lwz 12,(got+8)@l(12) # got[2] contains the map address
10624 * add 11,0,11 # r11 = index * 12 = reloc offset.
10625 * bctr
10626 */
10627 static const unsigned int plt_resolve[] =
10628 {
10629 LIS_12,
10630 ADDIS_11_11,
10631 LWZ_0_12,
10632 ADDI_11_11,
10633 MTCTR_0,
10634 ADD_0_11_11,
10635 LWZ_12_12,
10636 ADD_11_0_11,
10637 BCTR,
10638 NOP,
10639 NOP,
10640 NOP,
10641 NOP,
10642 NOP,
10643 NOP,
10644 NOP
10645 };
10646
10647 if (ARRAY_SIZE (pic_plt_resolve) != GLINK_PLTRESOLVE / 4)
10648 abort ();
10649 if (ARRAY_SIZE (plt_resolve) != GLINK_PLTRESOLVE / 4)
10650 abort ();
10651
10652 /* Build the branch table, one for each plt entry (less one),
10653 and perhaps some padding. */
10654 p = htab->glink->contents;
10655 p += htab->glink_pltresolve;
10656 endp = htab->glink->contents;
10657 endp += htab->glink->size - GLINK_PLTRESOLVE;
10658 while (p < endp - (htab->params->ppc476_workaround ? 0 : 8 * 4))
10659 {
10660 bfd_put_32 (output_bfd, B + endp - p, p);
10661 p += 4;
10662 }
10663 while (p < endp)
10664 {
10665 bfd_put_32 (output_bfd, NOP, p);
10666 p += 4;
10667 }
10668
10669 res0 = (htab->glink_pltresolve
10670 + htab->glink->output_section->vma
10671 + htab->glink->output_offset);
10672
10673 if (htab->params->ppc476_workaround)
10674 {
10675 /* Ensure that a call stub at the end of a page doesn't
10676 result in prefetch over the end of the page into the
10677 glink branch table. */
10678 bfd_vma pagesize = (bfd_vma) 1 << htab->params->pagesize_p2;
10679 bfd_vma page_addr;
10680 bfd_vma glink_start = (htab->glink->output_section->vma
10681 + htab->glink->output_offset);
10682
10683 for (page_addr = res0 & -pagesize;
10684 page_addr > glink_start;
10685 page_addr -= pagesize)
10686 {
10687 /* We have a plt call stub that may need fixing. */
10688 bfd_byte *loc;
10689 unsigned int insn;
10690
10691 loc = htab->glink->contents + page_addr - 4 - glink_start;
10692 insn = bfd_get_32 (output_bfd, loc);
10693 if (insn == BCTR)
10694 {
10695 /* By alignment, we know that there must be at least
10696 one other call stub before this one. */
10697 insn = bfd_get_32 (output_bfd, loc - 16);
10698 if (insn == BCTR)
10699 bfd_put_32 (output_bfd, B | (-16 & 0x3fffffc), loc);
10700 else
10701 bfd_put_32 (output_bfd, B | (-20 & 0x3fffffc), loc);
10702 }
10703 }
10704 }
10705
10706 /* Last comes the PLTresolve stub. */
10707 if (bfd_link_pic (info))
10708 {
10709 bfd_vma bcl;
10710
10711 for (i = 0; i < ARRAY_SIZE (pic_plt_resolve); i++)
10712 {
10713 unsigned int insn = pic_plt_resolve[i];
10714
10715 if (htab->params->ppc476_workaround && insn == NOP)
10716 insn = BA + 0;
10717 bfd_put_32 (output_bfd, insn, p);
10718 p += 4;
10719 }
10720 p -= 4 * ARRAY_SIZE (pic_plt_resolve);
10721
10722 bcl = (htab->glink->size - GLINK_PLTRESOLVE + 3*4
10723 + htab->glink->output_section->vma
10724 + htab->glink->output_offset);
10725
10726 bfd_put_32 (output_bfd,
10727 ADDIS_11_11 + PPC_HA (bcl - res0), p + 0*4);
10728 bfd_put_32 (output_bfd,
10729 ADDI_11_11 + PPC_LO (bcl - res0), p + 3*4);
10730 bfd_put_32 (output_bfd,
10731 ADDIS_12_12 + PPC_HA (got + 4 - bcl), p + 7*4);
10732 if (PPC_HA (got + 4 - bcl) == PPC_HA (got + 8 - bcl))
10733 {
10734 bfd_put_32 (output_bfd,
10735 LWZ_0_12 + PPC_LO (got + 4 - bcl), p + 8*4);
10736 bfd_put_32 (output_bfd,
10737 LWZ_12_12 + PPC_LO (got + 8 - bcl), p + 9*4);
10738 }
10739 else
10740 {
10741 bfd_put_32 (output_bfd,
10742 LWZU_0_12 + PPC_LO (got + 4 - bcl), p + 8*4);
10743 bfd_put_32 (output_bfd,
10744 LWZ_12_12 + 4, p + 9*4);
10745 }
10746 }
10747 else
10748 {
10749 for (i = 0; i < ARRAY_SIZE (plt_resolve); i++)
10750 {
10751 unsigned int insn = plt_resolve[i];
10752
10753 if (htab->params->ppc476_workaround && insn == NOP)
10754 insn = BA + 0;
10755 bfd_put_32 (output_bfd, insn, p);
10756 p += 4;
10757 }
10758 p -= 4 * ARRAY_SIZE (plt_resolve);
10759
10760 bfd_put_32 (output_bfd,
10761 LIS_12 + PPC_HA (got + 4), p + 0*4);
10762 bfd_put_32 (output_bfd,
10763 ADDIS_11_11 + PPC_HA (-res0), p + 1*4);
10764 bfd_put_32 (output_bfd,
10765 ADDI_11_11 + PPC_LO (-res0), p + 3*4);
10766 if (PPC_HA (got + 4) == PPC_HA (got + 8))
10767 {
10768 bfd_put_32 (output_bfd,
10769 LWZ_0_12 + PPC_LO (got + 4), p + 2*4);
10770 bfd_put_32 (output_bfd,
10771 LWZ_12_12 + PPC_LO (got + 8), p + 6*4);
10772 }
10773 else
10774 {
10775 bfd_put_32 (output_bfd,
10776 LWZU_0_12 + PPC_LO (got + 4), p + 2*4);
10777 bfd_put_32 (output_bfd,
10778 LWZ_12_12 + 4, p + 6*4);
10779 }
10780 }
10781 }
10782
10783 if (htab->glink_eh_frame != NULL
10784 && htab->glink_eh_frame->contents != NULL)
10785 {
10786 unsigned char *p = htab->glink_eh_frame->contents;
10787 bfd_vma val;
10788
10789 p += sizeof (glink_eh_frame_cie);
10790 /* FDE length. */
10791 p += 4;
10792 /* CIE pointer. */
10793 p += 4;
10794 /* Offset to .glink. */
10795 val = (htab->glink->output_section->vma
10796 + htab->glink->output_offset);
10797 val -= (htab->glink_eh_frame->output_section->vma
10798 + htab->glink_eh_frame->output_offset);
10799 val -= p - htab->glink_eh_frame->contents;
10800 bfd_put_32 (htab->elf.dynobj, val, p);
10801
10802 if (htab->glink_eh_frame->sec_info_type == SEC_INFO_TYPE_EH_FRAME
10803 && !_bfd_elf_write_section_eh_frame (output_bfd, info,
10804 htab->glink_eh_frame,
10805 htab->glink_eh_frame->contents))
10806 return FALSE;
10807 }
10808
10809 return ret;
10810 }
10811 \f
10812 #define TARGET_LITTLE_SYM powerpc_elf32_le_vec
10813 #define TARGET_LITTLE_NAME "elf32-powerpcle"
10814 #define TARGET_BIG_SYM powerpc_elf32_vec
10815 #define TARGET_BIG_NAME "elf32-powerpc"
10816 #define ELF_ARCH bfd_arch_powerpc
10817 #define ELF_TARGET_ID PPC32_ELF_DATA
10818 #define ELF_MACHINE_CODE EM_PPC
10819 #ifdef __QNXTARGET__
10820 #define ELF_MAXPAGESIZE 0x1000
10821 #define ELF_COMMONPAGESIZE 0x1000
10822 #else
10823 #define ELF_MAXPAGESIZE 0x10000
10824 #define ELF_COMMONPAGESIZE 0x10000
10825 #endif
10826 #define ELF_MINPAGESIZE 0x1000
10827 #define elf_info_to_howto ppc_elf_info_to_howto
10828
10829 #ifdef EM_CYGNUS_POWERPC
10830 #define ELF_MACHINE_ALT1 EM_CYGNUS_POWERPC
10831 #endif
10832
10833 #ifdef EM_PPC_OLD
10834 #define ELF_MACHINE_ALT2 EM_PPC_OLD
10835 #endif
10836
10837 #define elf_backend_plt_not_loaded 1
10838 #define elf_backend_can_gc_sections 1
10839 #define elf_backend_can_refcount 1
10840 #define elf_backend_rela_normal 1
10841 #define elf_backend_caches_rawsize 1
10842
10843 #define bfd_elf32_mkobject ppc_elf_mkobject
10844 #define bfd_elf32_bfd_merge_private_bfd_data ppc_elf_merge_private_bfd_data
10845 #define bfd_elf32_bfd_relax_section ppc_elf_relax_section
10846 #define bfd_elf32_bfd_reloc_type_lookup ppc_elf_reloc_type_lookup
10847 #define bfd_elf32_bfd_reloc_name_lookup ppc_elf_reloc_name_lookup
10848 #define bfd_elf32_bfd_set_private_flags ppc_elf_set_private_flags
10849 #define bfd_elf32_bfd_link_hash_table_create ppc_elf_link_hash_table_create
10850 #define bfd_elf32_get_synthetic_symtab ppc_elf_get_synthetic_symtab
10851
10852 #define elf_backend_object_p ppc_elf_object_p
10853 #define elf_backend_gc_mark_hook ppc_elf_gc_mark_hook
10854 #define elf_backend_gc_sweep_hook ppc_elf_gc_sweep_hook
10855 #define elf_backend_section_from_shdr ppc_elf_section_from_shdr
10856 #define elf_backend_relocate_section ppc_elf_relocate_section
10857 #define elf_backend_create_dynamic_sections ppc_elf_create_dynamic_sections
10858 #define elf_backend_check_relocs ppc_elf_check_relocs
10859 #define elf_backend_copy_indirect_symbol ppc_elf_copy_indirect_symbol
10860 #define elf_backend_adjust_dynamic_symbol ppc_elf_adjust_dynamic_symbol
10861 #define elf_backend_add_symbol_hook ppc_elf_add_symbol_hook
10862 #define elf_backend_size_dynamic_sections ppc_elf_size_dynamic_sections
10863 #define elf_backend_hash_symbol ppc_elf_hash_symbol
10864 #define elf_backend_finish_dynamic_symbol ppc_elf_finish_dynamic_symbol
10865 #define elf_backend_finish_dynamic_sections ppc_elf_finish_dynamic_sections
10866 #define elf_backend_fake_sections ppc_elf_fake_sections
10867 #define elf_backend_additional_program_headers ppc_elf_additional_program_headers
10868 #define elf_backend_modify_segment_map ppc_elf_modify_segment_map
10869 #define elf_backend_grok_prstatus ppc_elf_grok_prstatus
10870 #define elf_backend_grok_psinfo ppc_elf_grok_psinfo
10871 #define elf_backend_write_core_note ppc_elf_write_core_note
10872 #define elf_backend_reloc_type_class ppc_elf_reloc_type_class
10873 #define elf_backend_begin_write_processing ppc_elf_begin_write_processing
10874 #define elf_backend_final_write_processing ppc_elf_final_write_processing
10875 #define elf_backend_write_section ppc_elf_write_section
10876 #define elf_backend_get_sec_type_attr ppc_elf_get_sec_type_attr
10877 #define elf_backend_plt_sym_val ppc_elf_plt_sym_val
10878 #define elf_backend_action_discarded ppc_elf_action_discarded
10879 #define elf_backend_init_index_section _bfd_elf_init_1_index_section
10880 #define elf_backend_lookup_section_flags_hook ppc_elf_lookup_section_flags
10881
10882 #include "elf32-target.h"
10883
10884 /* FreeBSD Target */
10885
10886 #undef TARGET_LITTLE_SYM
10887 #undef TARGET_LITTLE_NAME
10888
10889 #undef TARGET_BIG_SYM
10890 #define TARGET_BIG_SYM powerpc_elf32_fbsd_vec
10891 #undef TARGET_BIG_NAME
10892 #define TARGET_BIG_NAME "elf32-powerpc-freebsd"
10893
10894 #undef ELF_OSABI
10895 #define ELF_OSABI ELFOSABI_FREEBSD
10896
10897 #undef elf32_bed
10898 #define elf32_bed elf32_powerpc_fbsd_bed
10899
10900 #include "elf32-target.h"
10901
10902 /* VxWorks Target */
10903
10904 #undef TARGET_LITTLE_SYM
10905 #undef TARGET_LITTLE_NAME
10906
10907 #undef TARGET_BIG_SYM
10908 #define TARGET_BIG_SYM powerpc_elf32_vxworks_vec
10909 #undef TARGET_BIG_NAME
10910 #define TARGET_BIG_NAME "elf32-powerpc-vxworks"
10911
10912 #undef ELF_OSABI
10913
10914 /* VxWorks uses the elf default section flags for .plt. */
10915 static const struct bfd_elf_special_section *
10916 ppc_elf_vxworks_get_sec_type_attr (bfd *abfd ATTRIBUTE_UNUSED, asection *sec)
10917 {
10918 if (sec->name == NULL)
10919 return NULL;
10920
10921 if (strcmp (sec->name, ".plt") == 0)
10922 return _bfd_elf_get_sec_type_attr (abfd, sec);
10923
10924 return ppc_elf_get_sec_type_attr (abfd, sec);
10925 }
10926
10927 /* Like ppc_elf_link_hash_table_create, but overrides
10928 appropriately for VxWorks. */
10929 static struct bfd_link_hash_table *
10930 ppc_elf_vxworks_link_hash_table_create (bfd *abfd)
10931 {
10932 struct bfd_link_hash_table *ret;
10933
10934 ret = ppc_elf_link_hash_table_create (abfd);
10935 if (ret)
10936 {
10937 struct ppc_elf_link_hash_table *htab
10938 = (struct ppc_elf_link_hash_table *)ret;
10939 htab->is_vxworks = 1;
10940 htab->plt_type = PLT_VXWORKS;
10941 htab->plt_entry_size = VXWORKS_PLT_ENTRY_SIZE;
10942 htab->plt_slot_size = VXWORKS_PLT_ENTRY_SIZE;
10943 htab->plt_initial_entry_size = VXWORKS_PLT_INITIAL_ENTRY_SIZE;
10944 }
10945 return ret;
10946 }
10947
10948 /* Tweak magic VxWorks symbols as they are loaded. */
10949 static bfd_boolean
10950 ppc_elf_vxworks_add_symbol_hook (bfd *abfd,
10951 struct bfd_link_info *info,
10952 Elf_Internal_Sym *sym,
10953 const char **namep ATTRIBUTE_UNUSED,
10954 flagword *flagsp ATTRIBUTE_UNUSED,
10955 asection **secp,
10956 bfd_vma *valp)
10957 {
10958 if (!elf_vxworks_add_symbol_hook(abfd, info, sym,namep, flagsp, secp,
10959 valp))
10960 return FALSE;
10961
10962 return ppc_elf_add_symbol_hook(abfd, info, sym,namep, flagsp, secp, valp);
10963 }
10964
10965 static void
10966 ppc_elf_vxworks_final_write_processing (bfd *abfd, bfd_boolean linker)
10967 {
10968 ppc_elf_final_write_processing(abfd, linker);
10969 elf_vxworks_final_write_processing(abfd, linker);
10970 }
10971
10972 /* On VxWorks, we emit relocations against _PROCEDURE_LINKAGE_TABLE_, so
10973 define it. */
10974 #undef elf_backend_want_plt_sym
10975 #define elf_backend_want_plt_sym 1
10976 #undef elf_backend_want_got_plt
10977 #define elf_backend_want_got_plt 1
10978 #undef elf_backend_got_symbol_offset
10979 #define elf_backend_got_symbol_offset 0
10980 #undef elf_backend_plt_not_loaded
10981 #define elf_backend_plt_not_loaded 0
10982 #undef elf_backend_plt_readonly
10983 #define elf_backend_plt_readonly 1
10984 #undef elf_backend_got_header_size
10985 #define elf_backend_got_header_size 12
10986
10987 #undef bfd_elf32_get_synthetic_symtab
10988
10989 #undef bfd_elf32_bfd_link_hash_table_create
10990 #define bfd_elf32_bfd_link_hash_table_create \
10991 ppc_elf_vxworks_link_hash_table_create
10992 #undef elf_backend_add_symbol_hook
10993 #define elf_backend_add_symbol_hook \
10994 ppc_elf_vxworks_add_symbol_hook
10995 #undef elf_backend_link_output_symbol_hook
10996 #define elf_backend_link_output_symbol_hook \
10997 elf_vxworks_link_output_symbol_hook
10998 #undef elf_backend_final_write_processing
10999 #define elf_backend_final_write_processing \
11000 ppc_elf_vxworks_final_write_processing
11001 #undef elf_backend_get_sec_type_attr
11002 #define elf_backend_get_sec_type_attr \
11003 ppc_elf_vxworks_get_sec_type_attr
11004 #undef elf_backend_emit_relocs
11005 #define elf_backend_emit_relocs \
11006 elf_vxworks_emit_relocs
11007
11008 #undef elf32_bed
11009 #define elf32_bed ppc_elf_vxworks_bed
11010 #undef elf_backend_post_process_headers
11011
11012 #include "elf32-target.h"
GDB Binutils - Deliverables
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