]> git.ipfire.org Git - thirdparty/binutils-gdb.git/blob - bfd/elf32-ppc.c
projects / thirdparty / binutils-gdb.git / blob
? search:
summary | shortlog | log | commit | commitdiff | tree
blame | history | raw | HEAD
Remove usages of find_thread when calling need_step_over_p
[thirdparty/binutils-gdb.git] / bfd / elf32-ppc.c
1 /* PowerPC-specific support for 32-bit ELF
2 Copyright (C) 1994-2017 Free Software Foundation, Inc.
3 Written by Ian Lance Taylor, Cygnus Support.
4
5 This file is part of BFD, the Binary File Descriptor library.
6
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
11
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
16
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the
19 Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor,
20 Boston, MA 02110-1301, USA. */
21
22
23 /* This file is based on a preliminary PowerPC ELF ABI. The
24 information may not match the final PowerPC ELF ABI. It includes
25 suggestions from the in-progress Embedded PowerPC ABI, and that
26 information may also not match. */
27
28 #include "sysdep.h"
29 #include <stdarg.h>
30 #include "bfd.h"
31 #include "bfdlink.h"
32 #include "libbfd.h"
33 #include "elf-bfd.h"
34 #include "elf/ppc.h"
35 #include "elf32-ppc.h"
36 #include "elf-vxworks.h"
37 #include "dwarf2.h"
38 #include "opcode/ppc.h"
39
40 typedef enum split16_format_type
41 {
42 split16a_type = 0,
43 split16d_type
44 }
45 split16_format_type;
46
47 /* RELA relocations are used here. */
48
49 static bfd_reloc_status_type ppc_elf_addr16_ha_reloc
50 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
51 static bfd_reloc_status_type ppc_elf_unhandled_reloc
52 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
53
54 /* Branch prediction bit for branch taken relocs. */
55 #define BRANCH_PREDICT_BIT 0x200000
56 /* Mask to set RA in memory instructions. */
57 #define RA_REGISTER_MASK 0x001f0000
58 /* Value to shift register by to insert RA. */
59 #define RA_REGISTER_SHIFT 16
60
61 /* The name of the dynamic interpreter. This is put in the .interp
62 section. */
63 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
64
65 /* For old-style PLT. */
66 /* The number of single-slot PLT entries (the rest use two slots). */
67 #define PLT_NUM_SINGLE_ENTRIES 8192
68
69 /* For new-style .glink and .plt. */
70 #define GLINK_PLTRESOLVE 16*4
71 #define GLINK_ENTRY_SIZE 4*4
72 #define TLS_GET_ADDR_GLINK_SIZE 12*4
73
74 /* VxWorks uses its own plt layout, filled in by the static linker. */
75
76 /* The standard VxWorks PLT entry. */
77 #define VXWORKS_PLT_ENTRY_SIZE 32
78 static const bfd_vma ppc_elf_vxworks_plt_entry
79 [VXWORKS_PLT_ENTRY_SIZE / 4] =
80 {
81 0x3d800000, /* lis r12,0 */
82 0x818c0000, /* lwz r12,0(r12) */
83 0x7d8903a6, /* mtctr r12 */
84 0x4e800420, /* bctr */
85 0x39600000, /* li r11,0 */
86 0x48000000, /* b 14 <.PLT0resolve+0x4> */
87 0x60000000, /* nop */
88 0x60000000, /* nop */
89 };
90 static const bfd_vma ppc_elf_vxworks_pic_plt_entry
91 [VXWORKS_PLT_ENTRY_SIZE / 4] =
92 {
93 0x3d9e0000, /* addis r12,r30,0 */
94 0x818c0000, /* lwz r12,0(r12) */
95 0x7d8903a6, /* mtctr r12 */
96 0x4e800420, /* bctr */
97 0x39600000, /* li r11,0 */
98 0x48000000, /* b 14 <.PLT0resolve+0x4> 14: R_PPC_REL24 .PLTresolve */
99 0x60000000, /* nop */
100 0x60000000, /* nop */
101 };
102
103 /* The initial VxWorks PLT entry. */
104 #define VXWORKS_PLT_INITIAL_ENTRY_SIZE 32
105 static const bfd_vma ppc_elf_vxworks_plt0_entry
106 [VXWORKS_PLT_INITIAL_ENTRY_SIZE / 4] =
107 {
108 0x3d800000, /* lis r12,0 */
109 0x398c0000, /* addi r12,r12,0 */
110 0x800c0008, /* lwz r0,8(r12) */
111 0x7c0903a6, /* mtctr r0 */
112 0x818c0004, /* lwz r12,4(r12) */
113 0x4e800420, /* bctr */
114 0x60000000, /* nop */
115 0x60000000, /* nop */
116 };
117 static const bfd_vma ppc_elf_vxworks_pic_plt0_entry
118 [VXWORKS_PLT_INITIAL_ENTRY_SIZE / 4] =
119 {
120 0x819e0008, /* lwz r12,8(r30) */
121 0x7d8903a6, /* mtctr r12 */
122 0x819e0004, /* lwz r12,4(r30) */
123 0x4e800420, /* bctr */
124 0x60000000, /* nop */
125 0x60000000, /* nop */
126 0x60000000, /* nop */
127 0x60000000, /* nop */
128 };
129
130 /* For executables, we have some additional relocations in
131 .rela.plt.unloaded, for the kernel loader. */
132
133 /* The number of non-JMP_SLOT relocations per PLT0 slot. */
134 #define VXWORKS_PLT_NON_JMP_SLOT_RELOCS 3
135 /* The number of relocations in the PLTResolve slot. */
136 #define VXWORKS_PLTRESOLVE_RELOCS 2
137 /* The number of relocations in the PLTResolve slot when creating
138 a shared library. */
139 #define VXWORKS_PLTRESOLVE_RELOCS_SHLIB 0
140
141 /* Some instructions. */
142 #define ADDIS_11_11 0x3d6b0000
143 #define ADDIS_11_30 0x3d7e0000
144 #define ADDIS_12_12 0x3d8c0000
145 #define ADDI_11_11 0x396b0000
146 #define ADD_0_11_11 0x7c0b5a14
147 #define ADD_3_12_2 0x7c6c1214
148 #define ADD_11_0_11 0x7d605a14
149 #define B 0x48000000
150 #define BA 0x48000002
151 #define BCL_20_31 0x429f0005
152 #define BCTR 0x4e800420
153 #define BEQLR 0x4d820020
154 #define CMPWI_11_0 0x2c0b0000
155 #define LIS_11 0x3d600000
156 #define LIS_12 0x3d800000
157 #define LWZU_0_12 0x840c0000
158 #define LWZ_0_12 0x800c0000
159 #define LWZ_11_3 0x81630000
160 #define LWZ_11_11 0x816b0000
161 #define LWZ_11_30 0x817e0000
162 #define LWZ_12_3 0x81830000
163 #define LWZ_12_12 0x818c0000
164 #define MR_0_3 0x7c601b78
165 #define MR_3_0 0x7c030378
166 #define MFLR_0 0x7c0802a6
167 #define MFLR_12 0x7d8802a6
168 #define MTCTR_0 0x7c0903a6
169 #define MTCTR_11 0x7d6903a6
170 #define MTLR_0 0x7c0803a6
171 #define NOP 0x60000000
172 #define SUB_11_11_12 0x7d6c5850
173
174 /* Offset of tp and dtp pointers from start of TLS block. */
175 #define TP_OFFSET 0x7000
176 #define DTP_OFFSET 0x8000
177
178 /* The value of a defined global symbol. */
179 #define SYM_VAL(SYM) \
180 ((SYM)->root.u.def.section->output_section->vma \
181 + (SYM)->root.u.def.section->output_offset \
182 + (SYM)->root.u.def.value)
183 \f
184 static reloc_howto_type *ppc_elf_howto_table[R_PPC_max];
185
186 static reloc_howto_type ppc_elf_howto_raw[] = {
187 /* This reloc does nothing. */
188 HOWTO (R_PPC_NONE, /* type */
189 0, /* rightshift */
190 3, /* size (0 = byte, 1 = short, 2 = long) */
191 0, /* bitsize */
192 FALSE, /* pc_relative */
193 0, /* bitpos */
194 complain_overflow_dont, /* complain_on_overflow */
195 bfd_elf_generic_reloc, /* special_function */
196 "R_PPC_NONE", /* name */
197 FALSE, /* partial_inplace */
198 0, /* src_mask */
199 0, /* dst_mask */
200 FALSE), /* pcrel_offset */
201
202 /* A standard 32 bit relocation. */
203 HOWTO (R_PPC_ADDR32, /* type */
204 0, /* rightshift */
205 2, /* size (0 = byte, 1 = short, 2 = long) */
206 32, /* bitsize */
207 FALSE, /* pc_relative */
208 0, /* bitpos */
209 complain_overflow_dont, /* complain_on_overflow */
210 bfd_elf_generic_reloc, /* special_function */
211 "R_PPC_ADDR32", /* name */
212 FALSE, /* partial_inplace */
213 0, /* src_mask */
214 0xffffffff, /* dst_mask */
215 FALSE), /* pcrel_offset */
216
217 /* An absolute 26 bit branch; the lower two bits must be zero.
218 FIXME: we don't check that, we just clear them. */
219 HOWTO (R_PPC_ADDR24, /* type */
220 0, /* rightshift */
221 2, /* size (0 = byte, 1 = short, 2 = long) */
222 26, /* bitsize */
223 FALSE, /* pc_relative */
224 0, /* bitpos */
225 complain_overflow_signed, /* complain_on_overflow */
226 bfd_elf_generic_reloc, /* special_function */
227 "R_PPC_ADDR24", /* name */
228 FALSE, /* partial_inplace */
229 0, /* src_mask */
230 0x3fffffc, /* dst_mask */
231 FALSE), /* pcrel_offset */
232
233 /* A standard 16 bit relocation. */
234 HOWTO (R_PPC_ADDR16, /* type */
235 0, /* rightshift */
236 1, /* size (0 = byte, 1 = short, 2 = long) */
237 16, /* bitsize */
238 FALSE, /* pc_relative */
239 0, /* bitpos */
240 complain_overflow_bitfield, /* complain_on_overflow */
241 bfd_elf_generic_reloc, /* special_function */
242 "R_PPC_ADDR16", /* name */
243 FALSE, /* partial_inplace */
244 0, /* src_mask */
245 0xffff, /* dst_mask */
246 FALSE), /* pcrel_offset */
247
248 /* A 16 bit relocation without overflow. */
249 HOWTO (R_PPC_ADDR16_LO, /* type */
250 0, /* rightshift */
251 1, /* size (0 = byte, 1 = short, 2 = long) */
252 16, /* bitsize */
253 FALSE, /* pc_relative */
254 0, /* bitpos */
255 complain_overflow_dont,/* complain_on_overflow */
256 bfd_elf_generic_reloc, /* special_function */
257 "R_PPC_ADDR16_LO", /* name */
258 FALSE, /* partial_inplace */
259 0, /* src_mask */
260 0xffff, /* dst_mask */
261 FALSE), /* pcrel_offset */
262
263 /* The high order 16 bits of an address. */
264 HOWTO (R_PPC_ADDR16_HI, /* type */
265 16, /* rightshift */
266 1, /* size (0 = byte, 1 = short, 2 = long) */
267 16, /* bitsize */
268 FALSE, /* pc_relative */
269 0, /* bitpos */
270 complain_overflow_dont, /* complain_on_overflow */
271 bfd_elf_generic_reloc, /* special_function */
272 "R_PPC_ADDR16_HI", /* name */
273 FALSE, /* partial_inplace */
274 0, /* src_mask */
275 0xffff, /* dst_mask */
276 FALSE), /* pcrel_offset */
277
278 /* The high order 16 bits of an address, plus 1 if the contents of
279 the low 16 bits, treated as a signed number, is negative. */
280 HOWTO (R_PPC_ADDR16_HA, /* type */
281 16, /* rightshift */
282 1, /* size (0 = byte, 1 = short, 2 = long) */
283 16, /* bitsize */
284 FALSE, /* pc_relative */
285 0, /* bitpos */
286 complain_overflow_dont, /* complain_on_overflow */
287 ppc_elf_addr16_ha_reloc, /* special_function */
288 "R_PPC_ADDR16_HA", /* name */
289 FALSE, /* partial_inplace */
290 0, /* src_mask */
291 0xffff, /* dst_mask */
292 FALSE), /* pcrel_offset */
293
294 /* An absolute 16 bit branch; the lower two bits must be zero.
295 FIXME: we don't check that, we just clear them. */
296 HOWTO (R_PPC_ADDR14, /* type */
297 0, /* rightshift */
298 2, /* size (0 = byte, 1 = short, 2 = long) */
299 16, /* bitsize */
300 FALSE, /* pc_relative */
301 0, /* bitpos */
302 complain_overflow_signed, /* complain_on_overflow */
303 bfd_elf_generic_reloc, /* special_function */
304 "R_PPC_ADDR14", /* name */
305 FALSE, /* partial_inplace */
306 0, /* src_mask */
307 0xfffc, /* dst_mask */
308 FALSE), /* pcrel_offset */
309
310 /* An absolute 16 bit branch, for which bit 10 should be set to
311 indicate that the branch is expected to be taken. The lower two
312 bits must be zero. */
313 HOWTO (R_PPC_ADDR14_BRTAKEN, /* type */
314 0, /* rightshift */
315 2, /* size (0 = byte, 1 = short, 2 = long) */
316 16, /* bitsize */
317 FALSE, /* pc_relative */
318 0, /* bitpos */
319 complain_overflow_signed, /* complain_on_overflow */
320 bfd_elf_generic_reloc, /* special_function */
321 "R_PPC_ADDR14_BRTAKEN",/* name */
322 FALSE, /* partial_inplace */
323 0, /* src_mask */
324 0xfffc, /* dst_mask */
325 FALSE), /* pcrel_offset */
326
327 /* An absolute 16 bit branch, for which bit 10 should be set to
328 indicate that the branch is not expected to be taken. The lower
329 two bits must be zero. */
330 HOWTO (R_PPC_ADDR14_BRNTAKEN, /* type */
331 0, /* rightshift */
332 2, /* size (0 = byte, 1 = short, 2 = long) */
333 16, /* bitsize */
334 FALSE, /* pc_relative */
335 0, /* bitpos */
336 complain_overflow_signed, /* complain_on_overflow */
337 bfd_elf_generic_reloc, /* special_function */
338 "R_PPC_ADDR14_BRNTAKEN",/* name */
339 FALSE, /* partial_inplace */
340 0, /* src_mask */
341 0xfffc, /* dst_mask */
342 FALSE), /* pcrel_offset */
343
344 /* A relative 26 bit branch; the lower two bits must be zero. */
345 HOWTO (R_PPC_REL24, /* type */
346 0, /* rightshift */
347 2, /* size (0 = byte, 1 = short, 2 = long) */
348 26, /* bitsize */
349 TRUE, /* pc_relative */
350 0, /* bitpos */
351 complain_overflow_signed, /* complain_on_overflow */
352 bfd_elf_generic_reloc, /* special_function */
353 "R_PPC_REL24", /* name */
354 FALSE, /* partial_inplace */
355 0, /* src_mask */
356 0x3fffffc, /* dst_mask */
357 TRUE), /* pcrel_offset */
358
359 /* A relative 16 bit branch; the lower two bits must be zero. */
360 HOWTO (R_PPC_REL14, /* type */
361 0, /* rightshift */
362 2, /* size (0 = byte, 1 = short, 2 = long) */
363 16, /* bitsize */
364 TRUE, /* pc_relative */
365 0, /* bitpos */
366 complain_overflow_signed, /* complain_on_overflow */
367 bfd_elf_generic_reloc, /* special_function */
368 "R_PPC_REL14", /* name */
369 FALSE, /* partial_inplace */
370 0, /* src_mask */
371 0xfffc, /* dst_mask */
372 TRUE), /* pcrel_offset */
373
374 /* A relative 16 bit branch. Bit 10 should be set to indicate that
375 the branch is expected to be taken. The lower two bits must be
376 zero. */
377 HOWTO (R_PPC_REL14_BRTAKEN, /* type */
378 0, /* rightshift */
379 2, /* size (0 = byte, 1 = short, 2 = long) */
380 16, /* bitsize */
381 TRUE, /* pc_relative */
382 0, /* bitpos */
383 complain_overflow_signed, /* complain_on_overflow */
384 bfd_elf_generic_reloc, /* special_function */
385 "R_PPC_REL14_BRTAKEN", /* name */
386 FALSE, /* partial_inplace */
387 0, /* src_mask */
388 0xfffc, /* dst_mask */
389 TRUE), /* pcrel_offset */
390
391 /* A relative 16 bit branch. Bit 10 should be set to indicate that
392 the branch is not expected to be taken. The lower two bits must
393 be zero. */
394 HOWTO (R_PPC_REL14_BRNTAKEN, /* type */
395 0, /* rightshift */
396 2, /* size (0 = byte, 1 = short, 2 = long) */
397 16, /* bitsize */
398 TRUE, /* pc_relative */
399 0, /* bitpos */
400 complain_overflow_signed, /* complain_on_overflow */
401 bfd_elf_generic_reloc, /* special_function */
402 "R_PPC_REL14_BRNTAKEN",/* name */
403 FALSE, /* partial_inplace */
404 0, /* src_mask */
405 0xfffc, /* dst_mask */
406 TRUE), /* pcrel_offset */
407
408 /* Like R_PPC_ADDR16, but referring to the GOT table entry for the
409 symbol. */
410 HOWTO (R_PPC_GOT16, /* type */
411 0, /* rightshift */
412 1, /* size (0 = byte, 1 = short, 2 = long) */
413 16, /* bitsize */
414 FALSE, /* pc_relative */
415 0, /* bitpos */
416 complain_overflow_signed, /* complain_on_overflow */
417 ppc_elf_unhandled_reloc, /* special_function */
418 "R_PPC_GOT16", /* name */
419 FALSE, /* partial_inplace */
420 0, /* src_mask */
421 0xffff, /* dst_mask */
422 FALSE), /* pcrel_offset */
423
424 /* Like R_PPC_ADDR16_LO, but referring to the GOT table entry for
425 the symbol. */
426 HOWTO (R_PPC_GOT16_LO, /* type */
427 0, /* rightshift */
428 1, /* size (0 = byte, 1 = short, 2 = long) */
429 16, /* bitsize */
430 FALSE, /* pc_relative */
431 0, /* bitpos */
432 complain_overflow_dont, /* complain_on_overflow */
433 ppc_elf_unhandled_reloc, /* special_function */
434 "R_PPC_GOT16_LO", /* name */
435 FALSE, /* partial_inplace */
436 0, /* src_mask */
437 0xffff, /* dst_mask */
438 FALSE), /* pcrel_offset */
439
440 /* Like R_PPC_ADDR16_HI, but referring to the GOT table entry for
441 the symbol. */
442 HOWTO (R_PPC_GOT16_HI, /* type */
443 16, /* rightshift */
444 1, /* size (0 = byte, 1 = short, 2 = long) */
445 16, /* bitsize */
446 FALSE, /* pc_relative */
447 0, /* bitpos */
448 complain_overflow_dont, /* complain_on_overflow */
449 ppc_elf_unhandled_reloc, /* special_function */
450 "R_PPC_GOT16_HI", /* name */
451 FALSE, /* partial_inplace */
452 0, /* src_mask */
453 0xffff, /* dst_mask */
454 FALSE), /* pcrel_offset */
455
456 /* Like R_PPC_ADDR16_HA, but referring to the GOT table entry for
457 the symbol. */
458 HOWTO (R_PPC_GOT16_HA, /* type */
459 16, /* rightshift */
460 1, /* size (0 = byte, 1 = short, 2 = long) */
461 16, /* bitsize */
462 FALSE, /* pc_relative */
463 0, /* bitpos */
464 complain_overflow_dont, /* complain_on_overflow */
465 ppc_elf_unhandled_reloc, /* special_function */
466 "R_PPC_GOT16_HA", /* name */
467 FALSE, /* partial_inplace */
468 0, /* src_mask */
469 0xffff, /* dst_mask */
470 FALSE), /* pcrel_offset */
471
472 /* Like R_PPC_REL24, but referring to the procedure linkage table
473 entry for the symbol. */
474 HOWTO (R_PPC_PLTREL24, /* type */
475 0, /* rightshift */
476 2, /* size (0 = byte, 1 = short, 2 = long) */
477 26, /* bitsize */
478 TRUE, /* pc_relative */
479 0, /* bitpos */
480 complain_overflow_signed, /* complain_on_overflow */
481 ppc_elf_unhandled_reloc, /* special_function */
482 "R_PPC_PLTREL24", /* name */
483 FALSE, /* partial_inplace */
484 0, /* src_mask */
485 0x3fffffc, /* dst_mask */
486 TRUE), /* pcrel_offset */
487
488 /* This is used only by the dynamic linker. The symbol should exist
489 both in the object being run and in some shared library. The
490 dynamic linker copies the data addressed by the symbol from the
491 shared library into the object, because the object being
492 run has to have the data at some particular address. */
493 HOWTO (R_PPC_COPY, /* type */
494 0, /* rightshift */
495 2, /* size (0 = byte, 1 = short, 2 = long) */
496 32, /* bitsize */
497 FALSE, /* pc_relative */
498 0, /* bitpos */
499 complain_overflow_dont, /* complain_on_overflow */
500 ppc_elf_unhandled_reloc, /* special_function */
501 "R_PPC_COPY", /* name */
502 FALSE, /* partial_inplace */
503 0, /* src_mask */
504 0, /* dst_mask */
505 FALSE), /* pcrel_offset */
506
507 /* Like R_PPC_ADDR32, but used when setting global offset table
508 entries. */
509 HOWTO (R_PPC_GLOB_DAT, /* type */
510 0, /* rightshift */
511 2, /* size (0 = byte, 1 = short, 2 = long) */
512 32, /* bitsize */
513 FALSE, /* pc_relative */
514 0, /* bitpos */
515 complain_overflow_dont, /* complain_on_overflow */
516 ppc_elf_unhandled_reloc, /* special_function */
517 "R_PPC_GLOB_DAT", /* name */
518 FALSE, /* partial_inplace */
519 0, /* src_mask */
520 0xffffffff, /* dst_mask */
521 FALSE), /* pcrel_offset */
522
523 /* Marks a procedure linkage table entry for a symbol. */
524 HOWTO (R_PPC_JMP_SLOT, /* type */
525 0, /* rightshift */
526 2, /* size (0 = byte, 1 = short, 2 = long) */
527 32, /* bitsize */
528 FALSE, /* pc_relative */
529 0, /* bitpos */
530 complain_overflow_dont, /* complain_on_overflow */
531 ppc_elf_unhandled_reloc, /* special_function */
532 "R_PPC_JMP_SLOT", /* name */
533 FALSE, /* partial_inplace */
534 0, /* src_mask */
535 0, /* dst_mask */
536 FALSE), /* pcrel_offset */
537
538 /* Used only by the dynamic linker. When the object is run, this
539 longword is set to the load address of the object, plus the
540 addend. */
541 HOWTO (R_PPC_RELATIVE, /* type */
542 0, /* rightshift */
543 2, /* size (0 = byte, 1 = short, 2 = long) */
544 32, /* bitsize */
545 FALSE, /* pc_relative */
546 0, /* bitpos */
547 complain_overflow_dont, /* complain_on_overflow */
548 bfd_elf_generic_reloc, /* special_function */
549 "R_PPC_RELATIVE", /* name */
550 FALSE, /* partial_inplace */
551 0, /* src_mask */
552 0xffffffff, /* dst_mask */
553 FALSE), /* pcrel_offset */
554
555 /* Like R_PPC_REL24, but uses the value of the symbol within the
556 object rather than the final value. Normally used for
557 _GLOBAL_OFFSET_TABLE_. */
558 HOWTO (R_PPC_LOCAL24PC, /* type */
559 0, /* rightshift */
560 2, /* size (0 = byte, 1 = short, 2 = long) */
561 26, /* bitsize */
562 TRUE, /* pc_relative */
563 0, /* bitpos */
564 complain_overflow_signed, /* complain_on_overflow */
565 bfd_elf_generic_reloc, /* special_function */
566 "R_PPC_LOCAL24PC", /* name */
567 FALSE, /* partial_inplace */
568 0, /* src_mask */
569 0x3fffffc, /* dst_mask */
570 TRUE), /* pcrel_offset */
571
572 /* Like R_PPC_ADDR32, but may be unaligned. */
573 HOWTO (R_PPC_UADDR32, /* type */
574 0, /* rightshift */
575 2, /* size (0 = byte, 1 = short, 2 = long) */
576 32, /* bitsize */
577 FALSE, /* pc_relative */
578 0, /* bitpos */
579 complain_overflow_dont, /* complain_on_overflow */
580 bfd_elf_generic_reloc, /* special_function */
581 "R_PPC_UADDR32", /* name */
582 FALSE, /* partial_inplace */
583 0, /* src_mask */
584 0xffffffff, /* dst_mask */
585 FALSE), /* pcrel_offset */
586
587 /* Like R_PPC_ADDR16, but may be unaligned. */
588 HOWTO (R_PPC_UADDR16, /* type */
589 0, /* rightshift */
590 1, /* size (0 = byte, 1 = short, 2 = long) */
591 16, /* bitsize */
592 FALSE, /* pc_relative */
593 0, /* bitpos */
594 complain_overflow_bitfield, /* complain_on_overflow */
595 bfd_elf_generic_reloc, /* special_function */
596 "R_PPC_UADDR16", /* name */
597 FALSE, /* partial_inplace */
598 0, /* src_mask */
599 0xffff, /* dst_mask */
600 FALSE), /* pcrel_offset */
601
602 /* 32-bit PC relative */
603 HOWTO (R_PPC_REL32, /* type */
604 0, /* rightshift */
605 2, /* size (0 = byte, 1 = short, 2 = long) */
606 32, /* bitsize */
607 TRUE, /* pc_relative */
608 0, /* bitpos */
609 complain_overflow_dont, /* complain_on_overflow */
610 bfd_elf_generic_reloc, /* special_function */
611 "R_PPC_REL32", /* name */
612 FALSE, /* partial_inplace */
613 0, /* src_mask */
614 0xffffffff, /* dst_mask */
615 TRUE), /* pcrel_offset */
616
617 /* 32-bit relocation to the symbol's procedure linkage table.
618 FIXME: not supported. */
619 HOWTO (R_PPC_PLT32, /* type */
620 0, /* rightshift */
621 2, /* size (0 = byte, 1 = short, 2 = long) */
622 32, /* bitsize */
623 FALSE, /* pc_relative */
624 0, /* bitpos */
625 complain_overflow_dont, /* complain_on_overflow */
626 ppc_elf_unhandled_reloc, /* special_function */
627 "R_PPC_PLT32", /* name */
628 FALSE, /* partial_inplace */
629 0, /* src_mask */
630 0, /* dst_mask */
631 FALSE), /* pcrel_offset */
632
633 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
634 FIXME: not supported. */
635 HOWTO (R_PPC_PLTREL32, /* type */
636 0, /* rightshift */
637 2, /* size (0 = byte, 1 = short, 2 = long) */
638 32, /* bitsize */
639 TRUE, /* pc_relative */
640 0, /* bitpos */
641 complain_overflow_dont, /* complain_on_overflow */
642 ppc_elf_unhandled_reloc, /* special_function */
643 "R_PPC_PLTREL32", /* name */
644 FALSE, /* partial_inplace */
645 0, /* src_mask */
646 0, /* dst_mask */
647 TRUE), /* pcrel_offset */
648
649 /* Like R_PPC_ADDR16_LO, but referring to the PLT table entry for
650 the symbol. */
651 HOWTO (R_PPC_PLT16_LO, /* type */
652 0, /* rightshift */
653 1, /* size (0 = byte, 1 = short, 2 = long) */
654 16, /* bitsize */
655 FALSE, /* pc_relative */
656 0, /* bitpos */
657 complain_overflow_dont, /* complain_on_overflow */
658 ppc_elf_unhandled_reloc, /* special_function */
659 "R_PPC_PLT16_LO", /* name */
660 FALSE, /* partial_inplace */
661 0, /* src_mask */
662 0xffff, /* dst_mask */
663 FALSE), /* pcrel_offset */
664
665 /* Like R_PPC_ADDR16_HI, but referring to the PLT table entry for
666 the symbol. */
667 HOWTO (R_PPC_PLT16_HI, /* type */
668 16, /* rightshift */
669 1, /* size (0 = byte, 1 = short, 2 = long) */
670 16, /* bitsize */
671 FALSE, /* pc_relative */
672 0, /* bitpos */
673 complain_overflow_dont, /* complain_on_overflow */
674 ppc_elf_unhandled_reloc, /* special_function */
675 "R_PPC_PLT16_HI", /* name */
676 FALSE, /* partial_inplace */
677 0, /* src_mask */
678 0xffff, /* dst_mask */
679 FALSE), /* pcrel_offset */
680
681 /* Like R_PPC_ADDR16_HA, but referring to the PLT table entry for
682 the symbol. */
683 HOWTO (R_PPC_PLT16_HA, /* type */
684 16, /* rightshift */
685 1, /* size (0 = byte, 1 = short, 2 = long) */
686 16, /* bitsize */
687 FALSE, /* pc_relative */
688 0, /* bitpos */
689 complain_overflow_dont, /* complain_on_overflow */
690 ppc_elf_unhandled_reloc, /* special_function */
691 "R_PPC_PLT16_HA", /* name */
692 FALSE, /* partial_inplace */
693 0, /* src_mask */
694 0xffff, /* dst_mask */
695 FALSE), /* pcrel_offset */
696
697 /* A sign-extended 16 bit value relative to _SDA_BASE_, for use with
698 small data items. */
699 HOWTO (R_PPC_SDAREL16, /* type */
700 0, /* rightshift */
701 1, /* size (0 = byte, 1 = short, 2 = long) */
702 16, /* bitsize */
703 FALSE, /* pc_relative */
704 0, /* bitpos */
705 complain_overflow_signed, /* complain_on_overflow */
706 ppc_elf_unhandled_reloc, /* special_function */
707 "R_PPC_SDAREL16", /* name */
708 FALSE, /* partial_inplace */
709 0, /* src_mask */
710 0xffff, /* dst_mask */
711 FALSE), /* pcrel_offset */
712
713 /* 16-bit section relative relocation. */
714 HOWTO (R_PPC_SECTOFF, /* type */
715 0, /* rightshift */
716 1, /* size (0 = byte, 1 = short, 2 = long) */
717 16, /* bitsize */
718 FALSE, /* pc_relative */
719 0, /* bitpos */
720 complain_overflow_signed, /* complain_on_overflow */
721 ppc_elf_unhandled_reloc, /* special_function */
722 "R_PPC_SECTOFF", /* name */
723 FALSE, /* partial_inplace */
724 0, /* src_mask */
725 0xffff, /* dst_mask */
726 FALSE), /* pcrel_offset */
727
728 /* 16-bit lower half section relative relocation. */
729 HOWTO (R_PPC_SECTOFF_LO, /* type */
730 0, /* rightshift */
731 1, /* size (0 = byte, 1 = short, 2 = long) */
732 16, /* bitsize */
733 FALSE, /* pc_relative */
734 0, /* bitpos */
735 complain_overflow_dont, /* complain_on_overflow */
736 ppc_elf_unhandled_reloc, /* special_function */
737 "R_PPC_SECTOFF_LO", /* name */
738 FALSE, /* partial_inplace */
739 0, /* src_mask */
740 0xffff, /* dst_mask */
741 FALSE), /* pcrel_offset */
742
743 /* 16-bit upper half section relative relocation. */
744 HOWTO (R_PPC_SECTOFF_HI, /* type */
745 16, /* rightshift */
746 1, /* size (0 = byte, 1 = short, 2 = long) */
747 16, /* bitsize */
748 FALSE, /* pc_relative */
749 0, /* bitpos */
750 complain_overflow_dont, /* complain_on_overflow */
751 ppc_elf_unhandled_reloc, /* special_function */
752 "R_PPC_SECTOFF_HI", /* name */
753 FALSE, /* partial_inplace */
754 0, /* src_mask */
755 0xffff, /* dst_mask */
756 FALSE), /* pcrel_offset */
757
758 /* 16-bit upper half adjusted section relative relocation. */
759 HOWTO (R_PPC_SECTOFF_HA, /* type */
760 16, /* rightshift */
761 1, /* size (0 = byte, 1 = short, 2 = long) */
762 16, /* bitsize */
763 FALSE, /* pc_relative */
764 0, /* bitpos */
765 complain_overflow_dont, /* complain_on_overflow */
766 ppc_elf_unhandled_reloc, /* special_function */
767 "R_PPC_SECTOFF_HA", /* name */
768 FALSE, /* partial_inplace */
769 0, /* src_mask */
770 0xffff, /* dst_mask */
771 FALSE), /* pcrel_offset */
772
773 /* Marker relocs for TLS. */
774 HOWTO (R_PPC_TLS,
775 0, /* rightshift */
776 2, /* size (0 = byte, 1 = short, 2 = long) */
777 32, /* bitsize */
778 FALSE, /* pc_relative */
779 0, /* bitpos */
780 complain_overflow_dont, /* complain_on_overflow */
781 bfd_elf_generic_reloc, /* special_function */
782 "R_PPC_TLS", /* name */
783 FALSE, /* partial_inplace */
784 0, /* src_mask */
785 0, /* dst_mask */
786 FALSE), /* pcrel_offset */
787
788 HOWTO (R_PPC_TLSGD,
789 0, /* rightshift */
790 2, /* size (0 = byte, 1 = short, 2 = long) */
791 32, /* bitsize */
792 FALSE, /* pc_relative */
793 0, /* bitpos */
794 complain_overflow_dont, /* complain_on_overflow */
795 bfd_elf_generic_reloc, /* special_function */
796 "R_PPC_TLSGD", /* name */
797 FALSE, /* partial_inplace */
798 0, /* src_mask */
799 0, /* dst_mask */
800 FALSE), /* pcrel_offset */
801
802 HOWTO (R_PPC_TLSLD,
803 0, /* rightshift */
804 2, /* size (0 = byte, 1 = short, 2 = long) */
805 32, /* bitsize */
806 FALSE, /* pc_relative */
807 0, /* bitpos */
808 complain_overflow_dont, /* complain_on_overflow */
809 bfd_elf_generic_reloc, /* special_function */
810 "R_PPC_TLSLD", /* name */
811 FALSE, /* partial_inplace */
812 0, /* src_mask */
813 0, /* dst_mask */
814 FALSE), /* pcrel_offset */
815
816 /* Computes the load module index of the load module that contains the
817 definition of its TLS sym. */
818 HOWTO (R_PPC_DTPMOD32,
819 0, /* rightshift */
820 2, /* size (0 = byte, 1 = short, 2 = long) */
821 32, /* bitsize */
822 FALSE, /* pc_relative */
823 0, /* bitpos */
824 complain_overflow_dont, /* complain_on_overflow */
825 ppc_elf_unhandled_reloc, /* special_function */
826 "R_PPC_DTPMOD32", /* name */
827 FALSE, /* partial_inplace */
828 0, /* src_mask */
829 0xffffffff, /* dst_mask */
830 FALSE), /* pcrel_offset */
831
832 /* Computes a dtv-relative displacement, the difference between the value
833 of sym+add and the base address of the thread-local storage block that
834 contains the definition of sym, minus 0x8000. */
835 HOWTO (R_PPC_DTPREL32,
836 0, /* rightshift */
837 2, /* size (0 = byte, 1 = short, 2 = long) */
838 32, /* bitsize */
839 FALSE, /* pc_relative */
840 0, /* bitpos */
841 complain_overflow_dont, /* complain_on_overflow */
842 ppc_elf_unhandled_reloc, /* special_function */
843 "R_PPC_DTPREL32", /* name */
844 FALSE, /* partial_inplace */
845 0, /* src_mask */
846 0xffffffff, /* dst_mask */
847 FALSE), /* pcrel_offset */
848
849 /* A 16 bit dtprel reloc. */
850 HOWTO (R_PPC_DTPREL16,
851 0, /* rightshift */
852 1, /* size (0 = byte, 1 = short, 2 = long) */
853 16, /* bitsize */
854 FALSE, /* pc_relative */
855 0, /* bitpos */
856 complain_overflow_signed, /* complain_on_overflow */
857 ppc_elf_unhandled_reloc, /* special_function */
858 "R_PPC_DTPREL16", /* name */
859 FALSE, /* partial_inplace */
860 0, /* src_mask */
861 0xffff, /* dst_mask */
862 FALSE), /* pcrel_offset */
863
864 /* Like DTPREL16, but no overflow. */
865 HOWTO (R_PPC_DTPREL16_LO,
866 0, /* rightshift */
867 1, /* size (0 = byte, 1 = short, 2 = long) */
868 16, /* bitsize */
869 FALSE, /* pc_relative */
870 0, /* bitpos */
871 complain_overflow_dont, /* complain_on_overflow */
872 ppc_elf_unhandled_reloc, /* special_function */
873 "R_PPC_DTPREL16_LO", /* name */
874 FALSE, /* partial_inplace */
875 0, /* src_mask */
876 0xffff, /* dst_mask */
877 FALSE), /* pcrel_offset */
878
879 /* Like DTPREL16_LO, but next higher group of 16 bits. */
880 HOWTO (R_PPC_DTPREL16_HI,
881 16, /* rightshift */
882 1, /* size (0 = byte, 1 = short, 2 = long) */
883 16, /* bitsize */
884 FALSE, /* pc_relative */
885 0, /* bitpos */
886 complain_overflow_dont, /* complain_on_overflow */
887 ppc_elf_unhandled_reloc, /* special_function */
888 "R_PPC_DTPREL16_HI", /* name */
889 FALSE, /* partial_inplace */
890 0, /* src_mask */
891 0xffff, /* dst_mask */
892 FALSE), /* pcrel_offset */
893
894 /* Like DTPREL16_HI, but adjust for low 16 bits. */
895 HOWTO (R_PPC_DTPREL16_HA,
896 16, /* rightshift */
897 1, /* size (0 = byte, 1 = short, 2 = long) */
898 16, /* bitsize */
899 FALSE, /* pc_relative */
900 0, /* bitpos */
901 complain_overflow_dont, /* complain_on_overflow */
902 ppc_elf_unhandled_reloc, /* special_function */
903 "R_PPC_DTPREL16_HA", /* name */
904 FALSE, /* partial_inplace */
905 0, /* src_mask */
906 0xffff, /* dst_mask */
907 FALSE), /* pcrel_offset */
908
909 /* Computes a tp-relative displacement, the difference between the value of
910 sym+add and the value of the thread pointer (r13). */
911 HOWTO (R_PPC_TPREL32,
912 0, /* rightshift */
913 2, /* size (0 = byte, 1 = short, 2 = long) */
914 32, /* bitsize */
915 FALSE, /* pc_relative */
916 0, /* bitpos */
917 complain_overflow_dont, /* complain_on_overflow */
918 ppc_elf_unhandled_reloc, /* special_function */
919 "R_PPC_TPREL32", /* name */
920 FALSE, /* partial_inplace */
921 0, /* src_mask */
922 0xffffffff, /* dst_mask */
923 FALSE), /* pcrel_offset */
924
925 /* A 16 bit tprel reloc. */
926 HOWTO (R_PPC_TPREL16,
927 0, /* rightshift */
928 1, /* size (0 = byte, 1 = short, 2 = long) */
929 16, /* bitsize */
930 FALSE, /* pc_relative */
931 0, /* bitpos */
932 complain_overflow_signed, /* complain_on_overflow */
933 ppc_elf_unhandled_reloc, /* special_function */
934 "R_PPC_TPREL16", /* name */
935 FALSE, /* partial_inplace */
936 0, /* src_mask */
937 0xffff, /* dst_mask */
938 FALSE), /* pcrel_offset */
939
940 /* Like TPREL16, but no overflow. */
941 HOWTO (R_PPC_TPREL16_LO,
942 0, /* rightshift */
943 1, /* size (0 = byte, 1 = short, 2 = long) */
944 16, /* bitsize */
945 FALSE, /* pc_relative */
946 0, /* bitpos */
947 complain_overflow_dont, /* complain_on_overflow */
948 ppc_elf_unhandled_reloc, /* special_function */
949 "R_PPC_TPREL16_LO", /* name */
950 FALSE, /* partial_inplace */
951 0, /* src_mask */
952 0xffff, /* dst_mask */
953 FALSE), /* pcrel_offset */
954
955 /* Like TPREL16_LO, but next higher group of 16 bits. */
956 HOWTO (R_PPC_TPREL16_HI,
957 16, /* rightshift */
958 1, /* size (0 = byte, 1 = short, 2 = long) */
959 16, /* bitsize */
960 FALSE, /* pc_relative */
961 0, /* bitpos */
962 complain_overflow_dont, /* complain_on_overflow */
963 ppc_elf_unhandled_reloc, /* special_function */
964 "R_PPC_TPREL16_HI", /* name */
965 FALSE, /* partial_inplace */
966 0, /* src_mask */
967 0xffff, /* dst_mask */
968 FALSE), /* pcrel_offset */
969
970 /* Like TPREL16_HI, but adjust for low 16 bits. */
971 HOWTO (R_PPC_TPREL16_HA,
972 16, /* rightshift */
973 1, /* size (0 = byte, 1 = short, 2 = long) */
974 16, /* bitsize */
975 FALSE, /* pc_relative */
976 0, /* bitpos */
977 complain_overflow_dont, /* complain_on_overflow */
978 ppc_elf_unhandled_reloc, /* special_function */
979 "R_PPC_TPREL16_HA", /* name */
980 FALSE, /* partial_inplace */
981 0, /* src_mask */
982 0xffff, /* dst_mask */
983 FALSE), /* pcrel_offset */
984
985 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
986 with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
987 to the first entry. */
988 HOWTO (R_PPC_GOT_TLSGD16,
989 0, /* rightshift */
990 1, /* size (0 = byte, 1 = short, 2 = long) */
991 16, /* bitsize */
992 FALSE, /* pc_relative */
993 0, /* bitpos */
994 complain_overflow_signed, /* complain_on_overflow */
995 ppc_elf_unhandled_reloc, /* special_function */
996 "R_PPC_GOT_TLSGD16", /* name */
997 FALSE, /* partial_inplace */
998 0, /* src_mask */
999 0xffff, /* dst_mask */
1000 FALSE), /* pcrel_offset */
1001
1002 /* Like GOT_TLSGD16, but no overflow. */
1003 HOWTO (R_PPC_GOT_TLSGD16_LO,
1004 0, /* rightshift */
1005 1, /* size (0 = byte, 1 = short, 2 = long) */
1006 16, /* bitsize */
1007 FALSE, /* pc_relative */
1008 0, /* bitpos */
1009 complain_overflow_dont, /* complain_on_overflow */
1010 ppc_elf_unhandled_reloc, /* special_function */
1011 "R_PPC_GOT_TLSGD16_LO", /* name */
1012 FALSE, /* partial_inplace */
1013 0, /* src_mask */
1014 0xffff, /* dst_mask */
1015 FALSE), /* pcrel_offset */
1016
1017 /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
1018 HOWTO (R_PPC_GOT_TLSGD16_HI,
1019 16, /* rightshift */
1020 1, /* size (0 = byte, 1 = short, 2 = long) */
1021 16, /* bitsize */
1022 FALSE, /* pc_relative */
1023 0, /* bitpos */
1024 complain_overflow_dont, /* complain_on_overflow */
1025 ppc_elf_unhandled_reloc, /* special_function */
1026 "R_PPC_GOT_TLSGD16_HI", /* name */
1027 FALSE, /* partial_inplace */
1028 0, /* src_mask */
1029 0xffff, /* dst_mask */
1030 FALSE), /* pcrel_offset */
1031
1032 /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
1033 HOWTO (R_PPC_GOT_TLSGD16_HA,
1034 16, /* rightshift */
1035 1, /* size (0 = byte, 1 = short, 2 = long) */
1036 16, /* bitsize */
1037 FALSE, /* pc_relative */
1038 0, /* bitpos */
1039 complain_overflow_dont, /* complain_on_overflow */
1040 ppc_elf_unhandled_reloc, /* special_function */
1041 "R_PPC_GOT_TLSGD16_HA", /* name */
1042 FALSE, /* partial_inplace */
1043 0, /* src_mask */
1044 0xffff, /* dst_mask */
1045 FALSE), /* pcrel_offset */
1046
1047 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1048 with values (sym+add)@dtpmod and zero, and computes the offset to the
1049 first entry. */
1050 HOWTO (R_PPC_GOT_TLSLD16,
1051 0, /* rightshift */
1052 1, /* size (0 = byte, 1 = short, 2 = long) */
1053 16, /* bitsize */
1054 FALSE, /* pc_relative */
1055 0, /* bitpos */
1056 complain_overflow_signed, /* complain_on_overflow */
1057 ppc_elf_unhandled_reloc, /* special_function */
1058 "R_PPC_GOT_TLSLD16", /* name */
1059 FALSE, /* partial_inplace */
1060 0, /* src_mask */
1061 0xffff, /* dst_mask */
1062 FALSE), /* pcrel_offset */
1063
1064 /* Like GOT_TLSLD16, but no overflow. */
1065 HOWTO (R_PPC_GOT_TLSLD16_LO,
1066 0, /* rightshift */
1067 1, /* size (0 = byte, 1 = short, 2 = long) */
1068 16, /* bitsize */
1069 FALSE, /* pc_relative */
1070 0, /* bitpos */
1071 complain_overflow_dont, /* complain_on_overflow */
1072 ppc_elf_unhandled_reloc, /* special_function */
1073 "R_PPC_GOT_TLSLD16_LO", /* name */
1074 FALSE, /* partial_inplace */
1075 0, /* src_mask */
1076 0xffff, /* dst_mask */
1077 FALSE), /* pcrel_offset */
1078
1079 /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
1080 HOWTO (R_PPC_GOT_TLSLD16_HI,
1081 16, /* rightshift */
1082 1, /* size (0 = byte, 1 = short, 2 = long) */
1083 16, /* bitsize */
1084 FALSE, /* pc_relative */
1085 0, /* bitpos */
1086 complain_overflow_dont, /* complain_on_overflow */
1087 ppc_elf_unhandled_reloc, /* special_function */
1088 "R_PPC_GOT_TLSLD16_HI", /* name */
1089 FALSE, /* partial_inplace */
1090 0, /* src_mask */
1091 0xffff, /* dst_mask */
1092 FALSE), /* pcrel_offset */
1093
1094 /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
1095 HOWTO (R_PPC_GOT_TLSLD16_HA,
1096 16, /* rightshift */
1097 1, /* size (0 = byte, 1 = short, 2 = long) */
1098 16, /* bitsize */
1099 FALSE, /* pc_relative */
1100 0, /* bitpos */
1101 complain_overflow_dont, /* complain_on_overflow */
1102 ppc_elf_unhandled_reloc, /* special_function */
1103 "R_PPC_GOT_TLSLD16_HA", /* name */
1104 FALSE, /* partial_inplace */
1105 0, /* src_mask */
1106 0xffff, /* dst_mask */
1107 FALSE), /* pcrel_offset */
1108
1109 /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
1110 the offset to the entry. */
1111 HOWTO (R_PPC_GOT_DTPREL16,
1112 0, /* rightshift */
1113 1, /* size (0 = byte, 1 = short, 2 = long) */
1114 16, /* bitsize */
1115 FALSE, /* pc_relative */
1116 0, /* bitpos */
1117 complain_overflow_signed, /* complain_on_overflow */
1118 ppc_elf_unhandled_reloc, /* special_function */
1119 "R_PPC_GOT_DTPREL16", /* name */
1120 FALSE, /* partial_inplace */
1121 0, /* src_mask */
1122 0xffff, /* dst_mask */
1123 FALSE), /* pcrel_offset */
1124
1125 /* Like GOT_DTPREL16, but no overflow. */
1126 HOWTO (R_PPC_GOT_DTPREL16_LO,
1127 0, /* rightshift */
1128 1, /* size (0 = byte, 1 = short, 2 = long) */
1129 16, /* bitsize */
1130 FALSE, /* pc_relative */
1131 0, /* bitpos */
1132 complain_overflow_dont, /* complain_on_overflow */
1133 ppc_elf_unhandled_reloc, /* special_function */
1134 "R_PPC_GOT_DTPREL16_LO", /* name */
1135 FALSE, /* partial_inplace */
1136 0, /* src_mask */
1137 0xffff, /* dst_mask */
1138 FALSE), /* pcrel_offset */
1139
1140 /* Like GOT_DTPREL16_LO, but next higher group of 16 bits. */
1141 HOWTO (R_PPC_GOT_DTPREL16_HI,
1142 16, /* rightshift */
1143 1, /* size (0 = byte, 1 = short, 2 = long) */
1144 16, /* bitsize */
1145 FALSE, /* pc_relative */
1146 0, /* bitpos */
1147 complain_overflow_dont, /* complain_on_overflow */
1148 ppc_elf_unhandled_reloc, /* special_function */
1149 "R_PPC_GOT_DTPREL16_HI", /* name */
1150 FALSE, /* partial_inplace */
1151 0, /* src_mask */
1152 0xffff, /* dst_mask */
1153 FALSE), /* pcrel_offset */
1154
1155 /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
1156 HOWTO (R_PPC_GOT_DTPREL16_HA,
1157 16, /* rightshift */
1158 1, /* size (0 = byte, 1 = short, 2 = long) */
1159 16, /* bitsize */
1160 FALSE, /* pc_relative */
1161 0, /* bitpos */
1162 complain_overflow_dont, /* complain_on_overflow */
1163 ppc_elf_unhandled_reloc, /* special_function */
1164 "R_PPC_GOT_DTPREL16_HA", /* name */
1165 FALSE, /* partial_inplace */
1166 0, /* src_mask */
1167 0xffff, /* dst_mask */
1168 FALSE), /* pcrel_offset */
1169
1170 /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
1171 offset to the entry. */
1172 HOWTO (R_PPC_GOT_TPREL16,
1173 0, /* rightshift */
1174 1, /* size (0 = byte, 1 = short, 2 = long) */
1175 16, /* bitsize */
1176 FALSE, /* pc_relative */
1177 0, /* bitpos */
1178 complain_overflow_signed, /* complain_on_overflow */
1179 ppc_elf_unhandled_reloc, /* special_function */
1180 "R_PPC_GOT_TPREL16", /* name */
1181 FALSE, /* partial_inplace */
1182 0, /* src_mask */
1183 0xffff, /* dst_mask */
1184 FALSE), /* pcrel_offset */
1185
1186 /* Like GOT_TPREL16, but no overflow. */
1187 HOWTO (R_PPC_GOT_TPREL16_LO,
1188 0, /* rightshift */
1189 1, /* size (0 = byte, 1 = short, 2 = long) */
1190 16, /* bitsize */
1191 FALSE, /* pc_relative */
1192 0, /* bitpos */
1193 complain_overflow_dont, /* complain_on_overflow */
1194 ppc_elf_unhandled_reloc, /* special_function */
1195 "R_PPC_GOT_TPREL16_LO", /* name */
1196 FALSE, /* partial_inplace */
1197 0, /* src_mask */
1198 0xffff, /* dst_mask */
1199 FALSE), /* pcrel_offset */
1200
1201 /* Like GOT_TPREL16_LO, but next higher group of 16 bits. */
1202 HOWTO (R_PPC_GOT_TPREL16_HI,
1203 16, /* rightshift */
1204 1, /* size (0 = byte, 1 = short, 2 = long) */
1205 16, /* bitsize */
1206 FALSE, /* pc_relative */
1207 0, /* bitpos */
1208 complain_overflow_dont, /* complain_on_overflow */
1209 ppc_elf_unhandled_reloc, /* special_function */
1210 "R_PPC_GOT_TPREL16_HI", /* name */
1211 FALSE, /* partial_inplace */
1212 0, /* src_mask */
1213 0xffff, /* dst_mask */
1214 FALSE), /* pcrel_offset */
1215
1216 /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
1217 HOWTO (R_PPC_GOT_TPREL16_HA,
1218 16, /* rightshift */
1219 1, /* size (0 = byte, 1 = short, 2 = long) */
1220 16, /* bitsize */
1221 FALSE, /* pc_relative */
1222 0, /* bitpos */
1223 complain_overflow_dont, /* complain_on_overflow */
1224 ppc_elf_unhandled_reloc, /* special_function */
1225 "R_PPC_GOT_TPREL16_HA", /* name */
1226 FALSE, /* partial_inplace */
1227 0, /* src_mask */
1228 0xffff, /* dst_mask */
1229 FALSE), /* pcrel_offset */
1230
1231 /* The remaining relocs are from the Embedded ELF ABI, and are not
1232 in the SVR4 ELF ABI. */
1233
1234 /* 32 bit value resulting from the addend minus the symbol. */
1235 HOWTO (R_PPC_EMB_NADDR32, /* type */
1236 0, /* rightshift */
1237 2, /* size (0 = byte, 1 = short, 2 = long) */
1238 32, /* bitsize */
1239 FALSE, /* pc_relative */
1240 0, /* bitpos */
1241 complain_overflow_dont, /* complain_on_overflow */
1242 ppc_elf_unhandled_reloc, /* special_function */
1243 "R_PPC_EMB_NADDR32", /* name */
1244 FALSE, /* partial_inplace */
1245 0, /* src_mask */
1246 0xffffffff, /* dst_mask */
1247 FALSE), /* pcrel_offset */
1248
1249 /* 16 bit value resulting from the addend minus the symbol. */
1250 HOWTO (R_PPC_EMB_NADDR16, /* type */
1251 0, /* rightshift */
1252 1, /* size (0 = byte, 1 = short, 2 = long) */
1253 16, /* bitsize */
1254 FALSE, /* pc_relative */
1255 0, /* bitpos */
1256 complain_overflow_signed, /* complain_on_overflow */
1257 ppc_elf_unhandled_reloc, /* special_function */
1258 "R_PPC_EMB_NADDR16", /* name */
1259 FALSE, /* partial_inplace */
1260 0, /* src_mask */
1261 0xffff, /* dst_mask */
1262 FALSE), /* pcrel_offset */
1263
1264 /* 16 bit value resulting from the addend minus the symbol. */
1265 HOWTO (R_PPC_EMB_NADDR16_LO, /* type */
1266 0, /* rightshift */
1267 1, /* size (0 = byte, 1 = short, 2 = long) */
1268 16, /* bitsize */
1269 FALSE, /* pc_relative */
1270 0, /* bitpos */
1271 complain_overflow_dont,/* complain_on_overflow */
1272 ppc_elf_unhandled_reloc, /* special_function */
1273 "R_PPC_EMB_ADDR16_LO", /* name */
1274 FALSE, /* partial_inplace */
1275 0, /* src_mask */
1276 0xffff, /* dst_mask */
1277 FALSE), /* pcrel_offset */
1278
1279 /* The high order 16 bits of the addend minus the symbol. */
1280 HOWTO (R_PPC_EMB_NADDR16_HI, /* type */
1281 16, /* rightshift */
1282 1, /* size (0 = byte, 1 = short, 2 = long) */
1283 16, /* bitsize */
1284 FALSE, /* pc_relative */
1285 0, /* bitpos */
1286 complain_overflow_dont, /* complain_on_overflow */
1287 ppc_elf_unhandled_reloc, /* special_function */
1288 "R_PPC_EMB_NADDR16_HI", /* name */
1289 FALSE, /* partial_inplace */
1290 0, /* src_mask */
1291 0xffff, /* dst_mask */
1292 FALSE), /* pcrel_offset */
1293
1294 /* The high order 16 bits of the result of the addend minus the address,
1295 plus 1 if the contents of the low 16 bits, treated as a signed number,
1296 is negative. */
1297 HOWTO (R_PPC_EMB_NADDR16_HA, /* type */
1298 16, /* rightshift */
1299 1, /* size (0 = byte, 1 = short, 2 = long) */
1300 16, /* bitsize */
1301 FALSE, /* pc_relative */
1302 0, /* bitpos */
1303 complain_overflow_dont, /* complain_on_overflow */
1304 ppc_elf_unhandled_reloc, /* special_function */
1305 "R_PPC_EMB_NADDR16_HA", /* name */
1306 FALSE, /* partial_inplace */
1307 0, /* src_mask */
1308 0xffff, /* dst_mask */
1309 FALSE), /* pcrel_offset */
1310
1311 /* 16 bit value resulting from allocating a 4 byte word to hold an
1312 address in the .sdata section, and returning the offset from
1313 _SDA_BASE_ for that relocation. */
1314 HOWTO (R_PPC_EMB_SDAI16, /* type */
1315 0, /* rightshift */
1316 1, /* size (0 = byte, 1 = short, 2 = long) */
1317 16, /* bitsize */
1318 FALSE, /* pc_relative */
1319 0, /* bitpos */
1320 complain_overflow_signed, /* complain_on_overflow */
1321 ppc_elf_unhandled_reloc, /* special_function */
1322 "R_PPC_EMB_SDAI16", /* name */
1323 FALSE, /* partial_inplace */
1324 0, /* src_mask */
1325 0xffff, /* dst_mask */
1326 FALSE), /* pcrel_offset */
1327
1328 /* 16 bit value resulting from allocating a 4 byte word to hold an
1329 address in the .sdata2 section, and returning the offset from
1330 _SDA2_BASE_ for that relocation. */
1331 HOWTO (R_PPC_EMB_SDA2I16, /* type */
1332 0, /* rightshift */
1333 1, /* size (0 = byte, 1 = short, 2 = long) */
1334 16, /* bitsize */
1335 FALSE, /* pc_relative */
1336 0, /* bitpos */
1337 complain_overflow_signed, /* complain_on_overflow */
1338 ppc_elf_unhandled_reloc, /* special_function */
1339 "R_PPC_EMB_SDA2I16", /* name */
1340 FALSE, /* partial_inplace */
1341 0, /* src_mask */
1342 0xffff, /* dst_mask */
1343 FALSE), /* pcrel_offset */
1344
1345 /* A sign-extended 16 bit value relative to _SDA2_BASE_, for use with
1346 small data items. */
1347 HOWTO (R_PPC_EMB_SDA2REL, /* type */
1348 0, /* rightshift */
1349 1, /* size (0 = byte, 1 = short, 2 = long) */
1350 16, /* bitsize */
1351 FALSE, /* pc_relative */
1352 0, /* bitpos */
1353 complain_overflow_signed, /* complain_on_overflow */
1354 ppc_elf_unhandled_reloc, /* special_function */
1355 "R_PPC_EMB_SDA2REL", /* name */
1356 FALSE, /* partial_inplace */
1357 0, /* src_mask */
1358 0xffff, /* dst_mask */
1359 FALSE), /* pcrel_offset */
1360
1361 /* Relocate against either _SDA_BASE_ or _SDA2_BASE_, filling in the 16 bit
1362 signed offset from the appropriate base, and filling in the register
1363 field with the appropriate register (0, 2, or 13). */
1364 HOWTO (R_PPC_EMB_SDA21, /* type */
1365 0, /* rightshift */
1366 2, /* size (0 = byte, 1 = short, 2 = long) */
1367 16, /* bitsize */
1368 FALSE, /* pc_relative */
1369 0, /* bitpos */
1370 complain_overflow_signed, /* complain_on_overflow */
1371 ppc_elf_unhandled_reloc, /* special_function */
1372 "R_PPC_EMB_SDA21", /* name */
1373 FALSE, /* partial_inplace */
1374 0, /* src_mask */
1375 0xffff, /* dst_mask */
1376 FALSE), /* pcrel_offset */
1377
1378 /* Relocation not handled: R_PPC_EMB_MRKREF */
1379 /* Relocation not handled: R_PPC_EMB_RELSEC16 */
1380 /* Relocation not handled: R_PPC_EMB_RELST_LO */
1381 /* Relocation not handled: R_PPC_EMB_RELST_HI */
1382 /* Relocation not handled: R_PPC_EMB_RELST_HA */
1383 /* Relocation not handled: R_PPC_EMB_BIT_FLD */
1384
1385 /* PC relative relocation against either _SDA_BASE_ or _SDA2_BASE_, filling
1386 in the 16 bit signed offset from the appropriate base, and filling in the
1387 register field with the appropriate register (0, 2, or 13). */
1388 HOWTO (R_PPC_EMB_RELSDA, /* type */
1389 0, /* rightshift */
1390 1, /* size (0 = byte, 1 = short, 2 = long) */
1391 16, /* bitsize */
1392 FALSE, /* pc_relative */
1393 0, /* bitpos */
1394 complain_overflow_signed, /* complain_on_overflow */
1395 ppc_elf_unhandled_reloc, /* special_function */
1396 "R_PPC_EMB_RELSDA", /* name */
1397 FALSE, /* partial_inplace */
1398 0, /* src_mask */
1399 0xffff, /* dst_mask */
1400 FALSE), /* pcrel_offset */
1401
1402 /* A relative 8 bit branch. */
1403 HOWTO (R_PPC_VLE_REL8, /* type */
1404 1, /* rightshift */
1405 1, /* size (0 = byte, 1 = short, 2 = long) */
1406 8, /* bitsize */
1407 TRUE, /* pc_relative */
1408 0, /* bitpos */
1409 complain_overflow_signed, /* complain_on_overflow */
1410 bfd_elf_generic_reloc, /* special_function */
1411 "R_PPC_VLE_REL8", /* name */
1412 FALSE, /* partial_inplace */
1413 0, /* src_mask */
1414 0xff, /* dst_mask */
1415 TRUE), /* pcrel_offset */
1416
1417 /* A relative 15 bit branch. */
1418 HOWTO (R_PPC_VLE_REL15, /* type */
1419 1, /* rightshift */
1420 2, /* size (0 = byte, 1 = short, 2 = long) */
1421 15, /* bitsize */
1422 TRUE, /* pc_relative */
1423 1, /* bitpos */
1424 complain_overflow_signed, /* complain_on_overflow */
1425 bfd_elf_generic_reloc, /* special_function */
1426 "R_PPC_VLE_REL15", /* name */
1427 FALSE, /* partial_inplace */
1428 0, /* src_mask */
1429 0xfffe, /* dst_mask */
1430 TRUE), /* pcrel_offset */
1431
1432 /* A relative 24 bit branch. */
1433 HOWTO (R_PPC_VLE_REL24, /* type */
1434 1, /* rightshift */
1435 2, /* size (0 = byte, 1 = short, 2 = long) */
1436 24, /* bitsize */
1437 TRUE, /* pc_relative */
1438 1, /* bitpos */
1439 complain_overflow_signed, /* complain_on_overflow */
1440 bfd_elf_generic_reloc, /* special_function */
1441 "R_PPC_VLE_REL24", /* name */
1442 FALSE, /* partial_inplace */
1443 0, /* src_mask */
1444 0x1fffffe, /* dst_mask */
1445 TRUE), /* pcrel_offset */
1446
1447 /* The 16 LSBS in split16a format. */
1448 HOWTO (R_PPC_VLE_LO16A, /* type */
1449 0, /* rightshift */
1450 2, /* size (0 = byte, 1 = short, 2 = long) */
1451 16, /* bitsize */
1452 FALSE, /* pc_relative */
1453 0, /* bitpos */
1454 complain_overflow_dont, /* complain_on_overflow */
1455 ppc_elf_unhandled_reloc, /* special_function */
1456 "R_PPC_VLE_LO16A", /* name */
1457 FALSE, /* partial_inplace */
1458 0, /* src_mask */
1459 0x1f07ff, /* dst_mask */
1460 FALSE), /* pcrel_offset */
1461
1462 /* The 16 LSBS in split16d format. */
1463 HOWTO (R_PPC_VLE_LO16D, /* type */
1464 0, /* rightshift */
1465 2, /* size (0 = byte, 1 = short, 2 = long) */
1466 16, /* bitsize */
1467 FALSE, /* pc_relative */
1468 0, /* bitpos */
1469 complain_overflow_dont, /* complain_on_overflow */
1470 ppc_elf_unhandled_reloc, /* special_function */
1471 "R_PPC_VLE_LO16D", /* name */
1472 FALSE, /* partial_inplace */
1473 0, /* src_mask */
1474 0x3e007ff, /* dst_mask */
1475 FALSE), /* pcrel_offset */
1476
1477 /* Bits 16-31 split16a format. */
1478 HOWTO (R_PPC_VLE_HI16A, /* type */
1479 16, /* rightshift */
1480 2, /* size (0 = byte, 1 = short, 2 = long) */
1481 16, /* bitsize */
1482 FALSE, /* pc_relative */
1483 0, /* bitpos */
1484 complain_overflow_dont, /* complain_on_overflow */
1485 ppc_elf_unhandled_reloc, /* special_function */
1486 "R_PPC_VLE_HI16A", /* name */
1487 FALSE, /* partial_inplace */
1488 0, /* src_mask */
1489 0x1f07ff, /* dst_mask */
1490 FALSE), /* pcrel_offset */
1491
1492 /* Bits 16-31 split16d format. */
1493 HOWTO (R_PPC_VLE_HI16D, /* type */
1494 16, /* rightshift */
1495 2, /* size (0 = byte, 1 = short, 2 = long) */
1496 16, /* bitsize */
1497 FALSE, /* pc_relative */
1498 0, /* bitpos */
1499 complain_overflow_dont, /* complain_on_overflow */
1500 ppc_elf_unhandled_reloc, /* special_function */
1501 "R_PPC_VLE_HI16D", /* name */
1502 FALSE, /* partial_inplace */
1503 0, /* src_mask */
1504 0x3e007ff, /* dst_mask */
1505 FALSE), /* pcrel_offset */
1506
1507 /* Bits 16-31 (High Adjusted) in split16a format. */
1508 HOWTO (R_PPC_VLE_HA16A, /* type */
1509 16, /* rightshift */
1510 2, /* size (0 = byte, 1 = short, 2 = long) */
1511 16, /* bitsize */
1512 FALSE, /* pc_relative */
1513 0, /* bitpos */
1514 complain_overflow_dont, /* complain_on_overflow */
1515 ppc_elf_unhandled_reloc, /* special_function */
1516 "R_PPC_VLE_HA16A", /* name */
1517 FALSE, /* partial_inplace */
1518 0, /* src_mask */
1519 0x1f07ff, /* dst_mask */
1520 FALSE), /* pcrel_offset */
1521
1522 /* Bits 16-31 (High Adjusted) in split16d format. */
1523 HOWTO (R_PPC_VLE_HA16D, /* type */
1524 16, /* rightshift */
1525 2, /* size (0 = byte, 1 = short, 2 = long) */
1526 16, /* bitsize */
1527 FALSE, /* pc_relative */
1528 0, /* bitpos */
1529 complain_overflow_dont, /* complain_on_overflow */
1530 ppc_elf_unhandled_reloc, /* special_function */
1531 "R_PPC_VLE_HA16D", /* name */
1532 FALSE, /* partial_inplace */
1533 0, /* src_mask */
1534 0x3e007ff, /* dst_mask */
1535 FALSE), /* pcrel_offset */
1536
1537 /* This reloc is like R_PPC_EMB_SDA21 but only applies to e_add16i
1538 instructions. If the register base is 0 then the linker changes
1539 the e_add16i to an e_li instruction. */
1540 HOWTO (R_PPC_VLE_SDA21, /* type */
1541 0, /* rightshift */
1542 2, /* size (0 = byte, 1 = short, 2 = long) */
1543 16, /* bitsize */
1544 FALSE, /* pc_relative */
1545 0, /* bitpos */
1546 complain_overflow_signed, /* complain_on_overflow */
1547 ppc_elf_unhandled_reloc, /* special_function */
1548 "R_PPC_VLE_SDA21", /* name */
1549 FALSE, /* partial_inplace */
1550 0, /* src_mask */
1551 0xffff, /* dst_mask */
1552 FALSE), /* pcrel_offset */
1553
1554 /* Like R_PPC_VLE_SDA21 but ignore overflow. */
1555 HOWTO (R_PPC_VLE_SDA21_LO, /* type */
1556 0, /* rightshift */
1557 2, /* size (0 = byte, 1 = short, 2 = long) */
1558 16, /* bitsize */
1559 FALSE, /* pc_relative */
1560 0, /* bitpos */
1561 complain_overflow_dont, /* complain_on_overflow */
1562 ppc_elf_unhandled_reloc, /* special_function */
1563 "R_PPC_VLE_SDA21_LO", /* name */
1564 FALSE, /* partial_inplace */
1565 0, /* src_mask */
1566 0xffff, /* dst_mask */
1567 FALSE), /* pcrel_offset */
1568
1569 /* The 16 LSBS relative to _SDA_BASE_ in split16a format. */
1570 HOWTO (R_PPC_VLE_SDAREL_LO16A,/* type */
1571 0, /* rightshift */
1572 2, /* size (0 = byte, 1 = short, 2 = long) */
1573 16, /* bitsize */
1574 FALSE, /* pc_relative */
1575 0, /* bitpos */
1576 complain_overflow_dont, /* complain_on_overflow */
1577 ppc_elf_unhandled_reloc, /* special_function */
1578 "R_PPC_VLE_SDAREL_LO16A", /* name */
1579 FALSE, /* partial_inplace */
1580 0, /* src_mask */
1581 0x1f07ff, /* dst_mask */
1582 FALSE), /* pcrel_offset */
1583
1584 /* The 16 LSBS relative to _SDA_BASE_ in split16d format. */
1585 HOWTO (R_PPC_VLE_SDAREL_LO16D, /* type */
1586 0, /* rightshift */
1587 2, /* size (0 = byte, 1 = short, 2 = long) */
1588 16, /* bitsize */
1589 FALSE, /* pc_relative */
1590 0, /* bitpos */
1591 complain_overflow_dont, /* complain_on_overflow */
1592 ppc_elf_unhandled_reloc, /* special_function */
1593 "R_PPC_VLE_SDAREL_LO16D", /* name */
1594 FALSE, /* partial_inplace */
1595 0, /* src_mask */
1596 0x3e007ff, /* dst_mask */
1597 FALSE), /* pcrel_offset */
1598
1599 /* Bits 16-31 relative to _SDA_BASE_ in split16a format. */
1600 HOWTO (R_PPC_VLE_SDAREL_HI16A, /* type */
1601 16, /* rightshift */
1602 2, /* size (0 = byte, 1 = short, 2 = long) */
1603 16, /* bitsize */
1604 FALSE, /* pc_relative */
1605 0, /* bitpos */
1606 complain_overflow_dont, /* complain_on_overflow */
1607 ppc_elf_unhandled_reloc, /* special_function */
1608 "R_PPC_VLE_SDAREL_HI16A", /* name */
1609 FALSE, /* partial_inplace */
1610 0, /* src_mask */
1611 0x1f07ff, /* dst_mask */
1612 FALSE), /* pcrel_offset */
1613
1614 /* Bits 16-31 relative to _SDA_BASE_ in split16d format. */
1615 HOWTO (R_PPC_VLE_SDAREL_HI16D, /* type */
1616 16, /* rightshift */
1617 2, /* size (0 = byte, 1 = short, 2 = long) */
1618 16, /* bitsize */
1619 FALSE, /* pc_relative */
1620 0, /* bitpos */
1621 complain_overflow_dont, /* complain_on_overflow */
1622 ppc_elf_unhandled_reloc, /* special_function */
1623 "R_PPC_VLE_SDAREL_HI16D", /* name */
1624 FALSE, /* partial_inplace */
1625 0, /* src_mask */
1626 0x3e007ff, /* dst_mask */
1627 FALSE), /* pcrel_offset */
1628
1629 /* Bits 16-31 (HA) relative to _SDA_BASE split16a format. */
1630 HOWTO (R_PPC_VLE_SDAREL_HA16A, /* type */
1631 16, /* rightshift */
1632 2, /* size (0 = byte, 1 = short, 2 = long) */
1633 16, /* bitsize */
1634 FALSE, /* pc_relative */
1635 0, /* bitpos */
1636 complain_overflow_dont, /* complain_on_overflow */
1637 ppc_elf_unhandled_reloc, /* special_function */
1638 "R_PPC_VLE_SDAREL_HA16A", /* name */
1639 FALSE, /* partial_inplace */
1640 0, /* src_mask */
1641 0x1f07ff, /* dst_mask */
1642 FALSE), /* pcrel_offset */
1643
1644 /* Bits 16-31 (HA) relative to _SDA_BASE split16d format. */
1645 HOWTO (R_PPC_VLE_SDAREL_HA16D, /* type */
1646 16, /* rightshift */
1647 2, /* size (0 = byte, 1 = short, 2 = long) */
1648 16, /* bitsize */
1649 FALSE, /* pc_relative */
1650 0, /* bitpos */
1651 complain_overflow_dont, /* complain_on_overflow */
1652 ppc_elf_unhandled_reloc, /* special_function */
1653 "R_PPC_VLE_SDAREL_HA16D", /* name */
1654 FALSE, /* partial_inplace */
1655 0, /* src_mask */
1656 0x3e007ff, /* dst_mask */
1657 FALSE), /* pcrel_offset */
1658
1659 /* e_li split20 format. */
1660 HOWTO (R_PPC_VLE_ADDR20, /* type */
1661 16, /* rightshift */
1662 2, /* size (0 = byte, 1 = short, 2 = long) */
1663 20, /* bitsize */
1664 FALSE, /* pc_relative */
1665 0, /* bitpos */
1666 complain_overflow_dont, /* complain_on_overflow */
1667 bfd_elf_generic_reloc, /* special_function */
1668 "R_PPC_VLE_ADDR20", /* name */
1669 FALSE, /* partial_inplace */
1670 0, /* src_mask */
1671 0x1f07ff, /* dst_mask */
1672 FALSE), /* pcrel_offset */
1673
1674 HOWTO (R_PPC_IRELATIVE, /* type */
1675 0, /* rightshift */
1676 2, /* size (0 = byte, 1 = short, 2 = long) */
1677 32, /* bitsize */
1678 FALSE, /* pc_relative */
1679 0, /* bitpos */
1680 complain_overflow_dont, /* complain_on_overflow */
1681 ppc_elf_unhandled_reloc, /* special_function */
1682 "R_PPC_IRELATIVE", /* name */
1683 FALSE, /* partial_inplace */
1684 0, /* src_mask */
1685 0xffffffff, /* dst_mask */
1686 FALSE), /* pcrel_offset */
1687
1688 /* A 16 bit relative relocation. */
1689 HOWTO (R_PPC_REL16, /* type */
1690 0, /* rightshift */
1691 1, /* size (0 = byte, 1 = short, 2 = long) */
1692 16, /* bitsize */
1693 TRUE, /* pc_relative */
1694 0, /* bitpos */
1695 complain_overflow_signed, /* complain_on_overflow */
1696 bfd_elf_generic_reloc, /* special_function */
1697 "R_PPC_REL16", /* name */
1698 FALSE, /* partial_inplace */
1699 0, /* src_mask */
1700 0xffff, /* dst_mask */
1701 TRUE), /* pcrel_offset */
1702
1703 /* A 16 bit relative relocation without overflow. */
1704 HOWTO (R_PPC_REL16_LO, /* type */
1705 0, /* rightshift */
1706 1, /* size (0 = byte, 1 = short, 2 = long) */
1707 16, /* bitsize */
1708 TRUE, /* pc_relative */
1709 0, /* bitpos */
1710 complain_overflow_dont,/* complain_on_overflow */
1711 bfd_elf_generic_reloc, /* special_function */
1712 "R_PPC_REL16_LO", /* name */
1713 FALSE, /* partial_inplace */
1714 0, /* src_mask */
1715 0xffff, /* dst_mask */
1716 TRUE), /* pcrel_offset */
1717
1718 /* The high order 16 bits of a relative address. */
1719 HOWTO (R_PPC_REL16_HI, /* type */
1720 16, /* rightshift */
1721 1, /* size (0 = byte, 1 = short, 2 = long) */
1722 16, /* bitsize */
1723 TRUE, /* pc_relative */
1724 0, /* bitpos */
1725 complain_overflow_dont, /* complain_on_overflow */
1726 bfd_elf_generic_reloc, /* special_function */
1727 "R_PPC_REL16_HI", /* name */
1728 FALSE, /* partial_inplace */
1729 0, /* src_mask */
1730 0xffff, /* dst_mask */
1731 TRUE), /* pcrel_offset */
1732
1733 /* The high order 16 bits of a relative address, plus 1 if the contents of
1734 the low 16 bits, treated as a signed number, is negative. */
1735 HOWTO (R_PPC_REL16_HA, /* type */
1736 16, /* rightshift */
1737 1, /* size (0 = byte, 1 = short, 2 = long) */
1738 16, /* bitsize */
1739 TRUE, /* pc_relative */
1740 0, /* bitpos */
1741 complain_overflow_dont, /* complain_on_overflow */
1742 ppc_elf_addr16_ha_reloc, /* special_function */
1743 "R_PPC_REL16_HA", /* name */
1744 FALSE, /* partial_inplace */
1745 0, /* src_mask */
1746 0xffff, /* dst_mask */
1747 TRUE), /* pcrel_offset */
1748
1749 /* Like R_PPC_REL16_HA but for split field in addpcis. */
1750 HOWTO (R_PPC_REL16DX_HA, /* type */
1751 16, /* rightshift */
1752 2, /* size (0 = byte, 1 = short, 2 = long) */
1753 16, /* bitsize */
1754 TRUE, /* pc_relative */
1755 0, /* bitpos */
1756 complain_overflow_signed, /* complain_on_overflow */
1757 ppc_elf_addr16_ha_reloc, /* special_function */
1758 "R_PPC_REL16DX_HA", /* name */
1759 FALSE, /* partial_inplace */
1760 0, /* src_mask */
1761 0x1fffc1, /* dst_mask */
1762 TRUE), /* pcrel_offset */
1763
1764 /* A split-field reloc for addpcis, non-relative (gas internal use only). */
1765 HOWTO (R_PPC_16DX_HA, /* type */
1766 16, /* rightshift */
1767 2, /* size (0 = byte, 1 = short, 2 = long) */
1768 16, /* bitsize */
1769 FALSE, /* pc_relative */
1770 0, /* bitpos */
1771 complain_overflow_signed, /* complain_on_overflow */
1772 ppc_elf_addr16_ha_reloc, /* special_function */
1773 "R_PPC_16DX_HA", /* name */
1774 FALSE, /* partial_inplace */
1775 0, /* src_mask */
1776 0x1fffc1, /* dst_mask */
1777 FALSE), /* pcrel_offset */
1778
1779 /* GNU extension to record C++ vtable hierarchy. */
1780 HOWTO (R_PPC_GNU_VTINHERIT, /* type */
1781 0, /* rightshift */
1782 0, /* size (0 = byte, 1 = short, 2 = long) */
1783 0, /* bitsize */
1784 FALSE, /* pc_relative */
1785 0, /* bitpos */
1786 complain_overflow_dont, /* complain_on_overflow */
1787 NULL, /* special_function */
1788 "R_PPC_GNU_VTINHERIT", /* name */
1789 FALSE, /* partial_inplace */
1790 0, /* src_mask */
1791 0, /* dst_mask */
1792 FALSE), /* pcrel_offset */
1793
1794 /* GNU extension to record C++ vtable member usage. */
1795 HOWTO (R_PPC_GNU_VTENTRY, /* type */
1796 0, /* rightshift */
1797 0, /* size (0 = byte, 1 = short, 2 = long) */
1798 0, /* bitsize */
1799 FALSE, /* pc_relative */
1800 0, /* bitpos */
1801 complain_overflow_dont, /* complain_on_overflow */
1802 NULL, /* special_function */
1803 "R_PPC_GNU_VTENTRY", /* name */
1804 FALSE, /* partial_inplace */
1805 0, /* src_mask */
1806 0, /* dst_mask */
1807 FALSE), /* pcrel_offset */
1808
1809 /* Phony reloc to handle AIX style TOC entries. */
1810 HOWTO (R_PPC_TOC16, /* type */
1811 0, /* rightshift */
1812 1, /* size (0 = byte, 1 = short, 2 = long) */
1813 16, /* bitsize */
1814 FALSE, /* pc_relative */
1815 0, /* bitpos */
1816 complain_overflow_signed, /* complain_on_overflow */
1817 ppc_elf_unhandled_reloc, /* special_function */
1818 "R_PPC_TOC16", /* name */
1819 FALSE, /* partial_inplace */
1820 0, /* src_mask */
1821 0xffff, /* dst_mask */
1822 FALSE), /* pcrel_offset */
1823 };
1824 \f
1825 /* Initialize the ppc_elf_howto_table, so that linear accesses can be done. */
1826
1827 static void
1828 ppc_elf_howto_init (void)
1829 {
1830 unsigned int i, type;
1831
1832 for (i = 0;
1833 i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]);
1834 i++)
1835 {
1836 type = ppc_elf_howto_raw[i].type;
1837 if (type >= (sizeof (ppc_elf_howto_table)
1838 / sizeof (ppc_elf_howto_table[0])))
1839 abort ();
1840 ppc_elf_howto_table[type] = &ppc_elf_howto_raw[i];
1841 }
1842 }
1843
1844 static reloc_howto_type *
1845 ppc_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1846 bfd_reloc_code_real_type code)
1847 {
1848 enum elf_ppc_reloc_type r;
1849
1850 /* Initialize howto table if not already done. */
1851 if (!ppc_elf_howto_table[R_PPC_ADDR32])
1852 ppc_elf_howto_init ();
1853
1854 switch (code)
1855 {
1856 default:
1857 return NULL;
1858
1859 case BFD_RELOC_NONE: r = R_PPC_NONE; break;
1860 case BFD_RELOC_32: r = R_PPC_ADDR32; break;
1861 case BFD_RELOC_PPC_BA26: r = R_PPC_ADDR24; break;
1862 case BFD_RELOC_PPC64_ADDR16_DS:
1863 case BFD_RELOC_16: r = R_PPC_ADDR16; break;
1864 case BFD_RELOC_PPC64_ADDR16_LO_DS:
1865 case BFD_RELOC_LO16: r = R_PPC_ADDR16_LO; break;
1866 case BFD_RELOC_HI16: r = R_PPC_ADDR16_HI; break;
1867 case BFD_RELOC_HI16_S: r = R_PPC_ADDR16_HA; break;
1868 case BFD_RELOC_PPC_BA16: r = R_PPC_ADDR14; break;
1869 case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC_ADDR14_BRTAKEN; break;
1870 case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC_ADDR14_BRNTAKEN; break;
1871 case BFD_RELOC_PPC_B26: r = R_PPC_REL24; break;
1872 case BFD_RELOC_PPC_B16: r = R_PPC_REL14; break;
1873 case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC_REL14_BRTAKEN; break;
1874 case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC_REL14_BRNTAKEN; break;
1875 case BFD_RELOC_PPC64_GOT16_DS:
1876 case BFD_RELOC_16_GOTOFF: r = R_PPC_GOT16; break;
1877 case BFD_RELOC_PPC64_GOT16_LO_DS:
1878 case BFD_RELOC_LO16_GOTOFF: r = R_PPC_GOT16_LO; break;
1879 case BFD_RELOC_HI16_GOTOFF: r = R_PPC_GOT16_HI; break;
1880 case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC_GOT16_HA; break;
1881 case BFD_RELOC_24_PLT_PCREL: r = R_PPC_PLTREL24; break;
1882 case BFD_RELOC_PPC_COPY: r = R_PPC_COPY; break;
1883 case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC_GLOB_DAT; break;
1884 case BFD_RELOC_PPC_LOCAL24PC: r = R_PPC_LOCAL24PC; break;
1885 case BFD_RELOC_32_PCREL: r = R_PPC_REL32; break;
1886 case BFD_RELOC_32_PLTOFF: r = R_PPC_PLT32; break;
1887 case BFD_RELOC_32_PLT_PCREL: r = R_PPC_PLTREL32; break;
1888 case BFD_RELOC_PPC64_PLT16_LO_DS:
1889 case BFD_RELOC_LO16_PLTOFF: r = R_PPC_PLT16_LO; break;
1890 case BFD_RELOC_HI16_PLTOFF: r = R_PPC_PLT16_HI; break;
1891 case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC_PLT16_HA; break;
1892 case BFD_RELOC_GPREL16: r = R_PPC_SDAREL16; break;
1893 case BFD_RELOC_PPC64_SECTOFF_DS:
1894 case BFD_RELOC_16_BASEREL: r = R_PPC_SECTOFF; break;
1895 case BFD_RELOC_PPC64_SECTOFF_LO_DS:
1896 case BFD_RELOC_LO16_BASEREL: r = R_PPC_SECTOFF_LO; break;
1897 case BFD_RELOC_HI16_BASEREL: r = R_PPC_SECTOFF_HI; break;
1898 case BFD_RELOC_HI16_S_BASEREL: r = R_PPC_SECTOFF_HA; break;
1899 case BFD_RELOC_CTOR: r = R_PPC_ADDR32; break;
1900 case BFD_RELOC_PPC64_TOC16_DS:
1901 case BFD_RELOC_PPC_TOC16: r = R_PPC_TOC16; break;
1902 case BFD_RELOC_PPC_TLS: r = R_PPC_TLS; break;
1903 case BFD_RELOC_PPC_TLSGD: r = R_PPC_TLSGD; break;
1904 case BFD_RELOC_PPC_TLSLD: r = R_PPC_TLSLD; break;
1905 case BFD_RELOC_PPC_DTPMOD: r = R_PPC_DTPMOD32; break;
1906 case BFD_RELOC_PPC64_TPREL16_DS:
1907 case BFD_RELOC_PPC_TPREL16: r = R_PPC_TPREL16; break;
1908 case BFD_RELOC_PPC64_TPREL16_LO_DS:
1909 case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC_TPREL16_LO; break;
1910 case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC_TPREL16_HI; break;
1911 case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC_TPREL16_HA; break;
1912 case BFD_RELOC_PPC_TPREL: r = R_PPC_TPREL32; break;
1913 case BFD_RELOC_PPC64_DTPREL16_DS:
1914 case BFD_RELOC_PPC_DTPREL16: r = R_PPC_DTPREL16; break;
1915 case BFD_RELOC_PPC64_DTPREL16_LO_DS:
1916 case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC_DTPREL16_LO; break;
1917 case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC_DTPREL16_HI; break;
1918 case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC_DTPREL16_HA; break;
1919 case BFD_RELOC_PPC_DTPREL: r = R_PPC_DTPREL32; break;
1920 case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC_GOT_TLSGD16; break;
1921 case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC_GOT_TLSGD16_LO; break;
1922 case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC_GOT_TLSGD16_HI; break;
1923 case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC_GOT_TLSGD16_HA; break;
1924 case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC_GOT_TLSLD16; break;
1925 case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC_GOT_TLSLD16_LO; break;
1926 case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC_GOT_TLSLD16_HI; break;
1927 case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC_GOT_TLSLD16_HA; break;
1928 case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC_GOT_TPREL16; break;
1929 case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC_GOT_TPREL16_LO; break;
1930 case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC_GOT_TPREL16_HI; break;
1931 case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC_GOT_TPREL16_HA; break;
1932 case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC_GOT_DTPREL16; break;
1933 case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC_GOT_DTPREL16_LO; break;
1934 case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC_GOT_DTPREL16_HI; break;
1935 case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC_GOT_DTPREL16_HA; break;
1936 case BFD_RELOC_PPC_EMB_NADDR32: r = R_PPC_EMB_NADDR32; break;
1937 case BFD_RELOC_PPC_EMB_NADDR16: r = R_PPC_EMB_NADDR16; break;
1938 case BFD_RELOC_PPC_EMB_NADDR16_LO: r = R_PPC_EMB_NADDR16_LO; break;
1939 case BFD_RELOC_PPC_EMB_NADDR16_HI: r = R_PPC_EMB_NADDR16_HI; break;
1940 case BFD_RELOC_PPC_EMB_NADDR16_HA: r = R_PPC_EMB_NADDR16_HA; break;
1941 case BFD_RELOC_PPC_EMB_SDAI16: r = R_PPC_EMB_SDAI16; break;
1942 case BFD_RELOC_PPC_EMB_SDA2I16: r = R_PPC_EMB_SDA2I16; break;
1943 case BFD_RELOC_PPC_EMB_SDA2REL: r = R_PPC_EMB_SDA2REL; break;
1944 case BFD_RELOC_PPC_EMB_SDA21: r = R_PPC_EMB_SDA21; break;
1945 case BFD_RELOC_PPC_EMB_MRKREF: r = R_PPC_EMB_MRKREF; break;
1946 case BFD_RELOC_PPC_EMB_RELSEC16: r = R_PPC_EMB_RELSEC16; break;
1947 case BFD_RELOC_PPC_EMB_RELST_LO: r = R_PPC_EMB_RELST_LO; break;
1948 case BFD_RELOC_PPC_EMB_RELST_HI: r = R_PPC_EMB_RELST_HI; break;
1949 case BFD_RELOC_PPC_EMB_RELST_HA: r = R_PPC_EMB_RELST_HA; break;
1950 case BFD_RELOC_PPC_EMB_BIT_FLD: r = R_PPC_EMB_BIT_FLD; break;
1951 case BFD_RELOC_PPC_EMB_RELSDA: r = R_PPC_EMB_RELSDA; break;
1952 case BFD_RELOC_PPC_VLE_REL8: r = R_PPC_VLE_REL8; break;
1953 case BFD_RELOC_PPC_VLE_REL15: r = R_PPC_VLE_REL15; break;
1954 case BFD_RELOC_PPC_VLE_REL24: r = R_PPC_VLE_REL24; break;
1955 case BFD_RELOC_PPC_VLE_LO16A: r = R_PPC_VLE_LO16A; break;
1956 case BFD_RELOC_PPC_VLE_LO16D: r = R_PPC_VLE_LO16D; break;
1957 case BFD_RELOC_PPC_VLE_HI16A: r = R_PPC_VLE_HI16A; break;
1958 case BFD_RELOC_PPC_VLE_HI16D: r = R_PPC_VLE_HI16D; break;
1959 case BFD_RELOC_PPC_VLE_HA16A: r = R_PPC_VLE_HA16A; break;
1960 case BFD_RELOC_PPC_VLE_HA16D: r = R_PPC_VLE_HA16D; break;
1961 case BFD_RELOC_PPC_VLE_SDA21: r = R_PPC_VLE_SDA21; break;
1962 case BFD_RELOC_PPC_VLE_SDA21_LO: r = R_PPC_VLE_SDA21_LO; break;
1963 case BFD_RELOC_PPC_VLE_SDAREL_LO16A:
1964 r = R_PPC_VLE_SDAREL_LO16A;
1965 break;
1966 case BFD_RELOC_PPC_VLE_SDAREL_LO16D:
1967 r = R_PPC_VLE_SDAREL_LO16D;
1968 break;
1969 case BFD_RELOC_PPC_VLE_SDAREL_HI16A:
1970 r = R_PPC_VLE_SDAREL_HI16A;
1971 break;
1972 case BFD_RELOC_PPC_VLE_SDAREL_HI16D:
1973 r = R_PPC_VLE_SDAREL_HI16D;
1974 break;
1975 case BFD_RELOC_PPC_VLE_SDAREL_HA16A:
1976 r = R_PPC_VLE_SDAREL_HA16A;
1977 break;
1978 case BFD_RELOC_PPC_VLE_SDAREL_HA16D:
1979 r = R_PPC_VLE_SDAREL_HA16D;
1980 break;
1981 case BFD_RELOC_16_PCREL: r = R_PPC_REL16; break;
1982 case BFD_RELOC_LO16_PCREL: r = R_PPC_REL16_LO; break;
1983 case BFD_RELOC_HI16_PCREL: r = R_PPC_REL16_HI; break;
1984 case BFD_RELOC_HI16_S_PCREL: r = R_PPC_REL16_HA; break;
1985 case BFD_RELOC_PPC_16DX_HA: r = R_PPC_16DX_HA; break;
1986 case BFD_RELOC_PPC_REL16DX_HA: r = R_PPC_REL16DX_HA; break;
1987 case BFD_RELOC_VTABLE_INHERIT: r = R_PPC_GNU_VTINHERIT; break;
1988 case BFD_RELOC_VTABLE_ENTRY: r = R_PPC_GNU_VTENTRY; break;
1989 }
1990
1991 return ppc_elf_howto_table[r];
1992 };
1993
1994 static reloc_howto_type *
1995 ppc_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1996 const char *r_name)
1997 {
1998 unsigned int i;
1999
2000 for (i = 0;
2001 i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]);
2002 i++)
2003 if (ppc_elf_howto_raw[i].name != NULL
2004 && strcasecmp (ppc_elf_howto_raw[i].name, r_name) == 0)
2005 return &ppc_elf_howto_raw[i];
2006
2007 return NULL;
2008 }
2009
2010 /* Set the howto pointer for a PowerPC ELF reloc. */
2011
2012 static void
2013 ppc_elf_info_to_howto (bfd *abfd,
2014 arelent *cache_ptr,
2015 Elf_Internal_Rela *dst)
2016 {
2017 unsigned int r_type;
2018
2019 /* Initialize howto table if not already done. */
2020 if (!ppc_elf_howto_table[R_PPC_ADDR32])
2021 ppc_elf_howto_init ();
2022
2023 r_type = ELF32_R_TYPE (dst->r_info);
2024 if (r_type >= R_PPC_max)
2025 {
2026 /* xgettext:c-format */
2027 _bfd_error_handler (_("%B: unrecognised PPC reloc number: %d"),
2028 abfd, r_type);
2029 bfd_set_error (bfd_error_bad_value);
2030 r_type = R_PPC_NONE;
2031 }
2032 cache_ptr->howto = ppc_elf_howto_table[r_type];
2033
2034 /* Just because the above assert didn't trigger doesn't mean that
2035 ELF32_R_TYPE (dst->r_info) is necessarily a valid relocation. */
2036 if (!cache_ptr->howto)
2037 {
2038 /* xgettext:c-format */
2039 _bfd_error_handler (_("%B: invalid relocation type %d"),
2040 abfd, r_type);
2041 bfd_set_error (bfd_error_bad_value);
2042
2043 cache_ptr->howto = ppc_elf_howto_table[R_PPC_NONE];
2044 }
2045 }
2046
2047 /* Handle the R_PPC_ADDR16_HA and R_PPC_REL16_HA relocs. */
2048
2049 static bfd_reloc_status_type
2050 ppc_elf_addr16_ha_reloc (bfd *abfd,
2051 arelent *reloc_entry,
2052 asymbol *symbol,
2053 void *data,
2054 asection *input_section,
2055 bfd *output_bfd,
2056 char **error_message ATTRIBUTE_UNUSED)
2057 {
2058 enum elf_ppc_reloc_type r_type;
2059 long insn;
2060 bfd_size_type octets;
2061 bfd_vma value;
2062
2063 if (output_bfd != NULL)
2064 {
2065 reloc_entry->address += input_section->output_offset;
2066 return bfd_reloc_ok;
2067 }
2068
2069 reloc_entry->addend += 0x8000;
2070 r_type = reloc_entry->howto->type;
2071 if (r_type != R_PPC_REL16DX_HA)
2072 return bfd_reloc_continue;
2073
2074 value = 0;
2075 if (!bfd_is_com_section (symbol->section))
2076 value = symbol->value;
2077 value += (reloc_entry->addend
2078 + symbol->section->output_offset
2079 + symbol->section->output_section->vma);
2080 value -= (reloc_entry->address
2081 + input_section->output_offset
2082 + input_section->output_section->vma);
2083 value >>= 16;
2084
2085 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
2086 insn = bfd_get_32 (abfd, (bfd_byte *) data + octets);
2087 insn &= ~0x1fffc1;
2088 insn |= (value & 0xffc1) | ((value & 0x3e) << 15);
2089 bfd_put_32 (abfd, insn, (bfd_byte *) data + octets);
2090 return bfd_reloc_ok;
2091 }
2092
2093 static bfd_reloc_status_type
2094 ppc_elf_unhandled_reloc (bfd *abfd,
2095 arelent *reloc_entry,
2096 asymbol *symbol,
2097 void *data,
2098 asection *input_section,
2099 bfd *output_bfd,
2100 char **error_message)
2101 {
2102 /* If this is a relocatable link (output_bfd test tells us), just
2103 call the generic function. Any adjustment will be done at final
2104 link time. */
2105 if (output_bfd != NULL)
2106 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2107 input_section, output_bfd, error_message);
2108
2109 if (error_message != NULL)
2110 {
2111 static char buf[60];
2112 sprintf (buf, _("generic linker can't handle %s"),
2113 reloc_entry->howto->name);
2114 *error_message = buf;
2115 }
2116 return bfd_reloc_dangerous;
2117 }
2118 \f
2119 /* Sections created by the linker. */
2120
2121 typedef struct elf_linker_section
2122 {
2123 /* Pointer to the bfd section. */
2124 asection *section;
2125 /* Section name. */
2126 const char *name;
2127 /* Associated bss section name. */
2128 const char *bss_name;
2129 /* Associated symbol name. */
2130 const char *sym_name;
2131 /* Associated symbol. */
2132 struct elf_link_hash_entry *sym;
2133 } elf_linker_section_t;
2134
2135 /* Linked list of allocated pointer entries. This hangs off of the
2136 symbol lists, and provides allows us to return different pointers,
2137 based on different addend's. */
2138
2139 typedef struct elf_linker_section_pointers
2140 {
2141 /* next allocated pointer for this symbol */
2142 struct elf_linker_section_pointers *next;
2143 /* offset of pointer from beginning of section */
2144 bfd_vma offset;
2145 /* addend used */
2146 bfd_vma addend;
2147 /* which linker section this is */
2148 elf_linker_section_t *lsect;
2149 } elf_linker_section_pointers_t;
2150
2151 struct ppc_elf_obj_tdata
2152 {
2153 struct elf_obj_tdata elf;
2154
2155 /* A mapping from local symbols to offsets into the various linker
2156 sections added. This is index by the symbol index. */
2157 elf_linker_section_pointers_t **linker_section_pointers;
2158
2159 /* Flags used to auto-detect plt type. */
2160 unsigned int makes_plt_call : 1;
2161 unsigned int has_rel16 : 1;
2162 };
2163
2164 #define ppc_elf_tdata(bfd) \
2165 ((struct ppc_elf_obj_tdata *) (bfd)->tdata.any)
2166
2167 #define elf_local_ptr_offsets(bfd) \
2168 (ppc_elf_tdata (bfd)->linker_section_pointers)
2169
2170 #define is_ppc_elf(bfd) \
2171 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
2172 && elf_object_id (bfd) == PPC32_ELF_DATA)
2173
2174 /* Override the generic function because we store some extras. */
2175
2176 static bfd_boolean
2177 ppc_elf_mkobject (bfd *abfd)
2178 {
2179 return bfd_elf_allocate_object (abfd, sizeof (struct ppc_elf_obj_tdata),
2180 PPC32_ELF_DATA);
2181 }
2182
2183 /* When defaulting arch/mach, decode apuinfo to find a better match. */
2184
2185 bfd_boolean
2186 _bfd_elf_ppc_set_arch (bfd *abfd)
2187 {
2188 unsigned long mach = 0;
2189 asection *s;
2190 unsigned char *contents;
2191
2192 if (abfd->arch_info->bits_per_word == 32
2193 && bfd_big_endian (abfd))
2194 {
2195
2196 for (s = abfd->sections; s != NULL; s = s->next)
2197 if ((elf_section_data (s)->this_hdr.sh_flags & SHF_PPC_VLE) != 0)
2198 break;
2199 if (s != NULL)
2200 mach = bfd_mach_ppc_vle;
2201 }
2202
2203 if (mach == 0)
2204 {
2205 s = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2206 if (s != NULL && bfd_malloc_and_get_section (abfd, s, &contents))
2207 {
2208 unsigned int apuinfo_size = bfd_get_32 (abfd, contents + 4);
2209 unsigned int i;
2210
2211 for (i = 20; i < apuinfo_size + 20 && i + 4 <= s->size; i += 4)
2212 {
2213 unsigned int val = bfd_get_32 (abfd, contents + i);
2214 switch (val >> 16)
2215 {
2216 case PPC_APUINFO_PMR:
2217 case PPC_APUINFO_RFMCI:
2218 if (mach == 0)
2219 mach = bfd_mach_ppc_titan;
2220 break;
2221
2222 case PPC_APUINFO_ISEL:
2223 case PPC_APUINFO_CACHELCK:
2224 if (mach == bfd_mach_ppc_titan)
2225 mach = bfd_mach_ppc_e500mc;
2226 break;
2227
2228 case PPC_APUINFO_SPE:
2229 case PPC_APUINFO_EFS:
2230 case PPC_APUINFO_BRLOCK:
2231 if (mach != bfd_mach_ppc_vle)
2232 mach = bfd_mach_ppc_e500;
2233 break;
2234
2235 case PPC_APUINFO_VLE:
2236 mach = bfd_mach_ppc_vle;
2237 break;
2238
2239 default:
2240 mach = -1ul;
2241 }
2242 }
2243 free (contents);
2244 }
2245 }
2246
2247 if (mach != 0 && mach != -1ul)
2248 {
2249 const bfd_arch_info_type *arch;
2250
2251 for (arch = abfd->arch_info->next; arch; arch = arch->next)
2252 if (arch->mach == mach)
2253 {
2254 abfd->arch_info = arch;
2255 break;
2256 }
2257 }
2258 return TRUE;
2259 }
2260
2261 /* Fix bad default arch selected for a 32 bit input bfd when the
2262 default is 64 bit. Also select arch based on apuinfo. */
2263
2264 static bfd_boolean
2265 ppc_elf_object_p (bfd *abfd)
2266 {
2267 if (!abfd->arch_info->the_default)
2268 return TRUE;
2269
2270 if (abfd->arch_info->bits_per_word == 64)
2271 {
2272 Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd);
2273
2274 if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS32)
2275 {
2276 /* Relies on arch after 64 bit default being 32 bit default. */
2277 abfd->arch_info = abfd->arch_info->next;
2278 BFD_ASSERT (abfd->arch_info->bits_per_word == 32);
2279 }
2280 }
2281 return _bfd_elf_ppc_set_arch (abfd);
2282 }
2283
2284 /* Function to set whether a module needs the -mrelocatable bit set. */
2285
2286 static bfd_boolean
2287 ppc_elf_set_private_flags (bfd *abfd, flagword flags)
2288 {
2289 BFD_ASSERT (!elf_flags_init (abfd)
2290 || elf_elfheader (abfd)->e_flags == flags);
2291
2292 elf_elfheader (abfd)->e_flags = flags;
2293 elf_flags_init (abfd) = TRUE;
2294 return TRUE;
2295 }
2296
2297 /* Support for core dump NOTE sections. */
2298
2299 static bfd_boolean
2300 ppc_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
2301 {
2302 int offset;
2303 unsigned int size;
2304
2305 switch (note->descsz)
2306 {
2307 default:
2308 return FALSE;
2309
2310 case 268: /* Linux/PPC. */
2311 /* pr_cursig */
2312 elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12);
2313
2314 /* pr_pid */
2315 elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 24);
2316
2317 /* pr_reg */
2318 offset = 72;
2319 size = 192;
2320
2321 break;
2322 }
2323
2324 /* Make a ".reg/999" section. */
2325 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
2326 size, note->descpos + offset);
2327 }
2328
2329 static bfd_boolean
2330 ppc_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
2331 {
2332 switch (note->descsz)
2333 {
2334 default:
2335 return FALSE;
2336
2337 case 128: /* Linux/PPC elf_prpsinfo. */
2338 elf_tdata (abfd)->core->pid
2339 = bfd_get_32 (abfd, note->descdata + 16);
2340 elf_tdata (abfd)->core->program
2341 = _bfd_elfcore_strndup (abfd, note->descdata + 32, 16);
2342 elf_tdata (abfd)->core->command
2343 = _bfd_elfcore_strndup (abfd, note->descdata + 48, 80);
2344 }
2345
2346 /* Note that for some reason, a spurious space is tacked
2347 onto the end of the args in some (at least one anyway)
2348 implementations, so strip it off if it exists. */
2349
2350 {
2351 char *command = elf_tdata (abfd)->core->command;
2352 int n = strlen (command);
2353
2354 if (0 < n && command[n - 1] == ' ')
2355 command[n - 1] = '\0';
2356 }
2357
2358 return TRUE;
2359 }
2360
2361 static char *
2362 ppc_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type, ...)
2363 {
2364 switch (note_type)
2365 {
2366 default:
2367 return NULL;
2368
2369 case NT_PRPSINFO:
2370 {
2371 char data[128];
2372 va_list ap;
2373
2374 va_start (ap, note_type);
2375 memset (data, 0, sizeof (data));
2376 strncpy (data + 32, va_arg (ap, const char *), 16);
2377 strncpy (data + 48, va_arg (ap, const char *), 80);
2378 va_end (ap);
2379 return elfcore_write_note (abfd, buf, bufsiz,
2380 "CORE", note_type, data, sizeof (data));
2381 }
2382
2383 case NT_PRSTATUS:
2384 {
2385 char data[268];
2386 va_list ap;
2387 long pid;
2388 int cursig;
2389 const void *greg;
2390
2391 va_start (ap, note_type);
2392 memset (data, 0, 72);
2393 pid = va_arg (ap, long);
2394 bfd_put_32 (abfd, pid, data + 24);
2395 cursig = va_arg (ap, int);
2396 bfd_put_16 (abfd, cursig, data + 12);
2397 greg = va_arg (ap, const void *);
2398 memcpy (data + 72, greg, 192);
2399 memset (data + 264, 0, 4);
2400 va_end (ap);
2401 return elfcore_write_note (abfd, buf, bufsiz,
2402 "CORE", note_type, data, sizeof (data));
2403 }
2404 }
2405 }
2406
2407 static flagword
2408 ppc_elf_lookup_section_flags (char *flag_name)
2409 {
2410
2411 if (!strcmp (flag_name, "SHF_PPC_VLE"))
2412 return SHF_PPC_VLE;
2413
2414 return 0;
2415 }
2416
2417 /* Return address for Ith PLT stub in section PLT, for relocation REL
2418 or (bfd_vma) -1 if it should not be included. */
2419
2420 static bfd_vma
2421 ppc_elf_plt_sym_val (bfd_vma i ATTRIBUTE_UNUSED,
2422 const asection *plt ATTRIBUTE_UNUSED,
2423 const arelent *rel)
2424 {
2425 return rel->address;
2426 }
2427
2428 /* Handle a PowerPC specific section when reading an object file. This
2429 is called when bfd_section_from_shdr finds a section with an unknown
2430 type. */
2431
2432 static bfd_boolean
2433 ppc_elf_section_from_shdr (bfd *abfd,
2434 Elf_Internal_Shdr *hdr,
2435 const char *name,
2436 int shindex)
2437 {
2438 asection *newsect;
2439 flagword flags;
2440
2441 if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
2442 return FALSE;
2443
2444 newsect = hdr->bfd_section;
2445 flags = bfd_get_section_flags (abfd, newsect);
2446 if (hdr->sh_flags & SHF_EXCLUDE)
2447 flags |= SEC_EXCLUDE;
2448
2449 if (hdr->sh_type == SHT_ORDERED)
2450 flags |= SEC_SORT_ENTRIES;
2451
2452 bfd_set_section_flags (abfd, newsect, flags);
2453 return TRUE;
2454 }
2455
2456 /* Set up any other section flags and such that may be necessary. */
2457
2458 static bfd_boolean
2459 ppc_elf_fake_sections (bfd *abfd ATTRIBUTE_UNUSED,
2460 Elf_Internal_Shdr *shdr,
2461 asection *asect)
2462 {
2463 if ((asect->flags & SEC_SORT_ENTRIES) != 0)
2464 shdr->sh_type = SHT_ORDERED;
2465
2466 return TRUE;
2467 }
2468
2469 /* If we have .sbss2 or .PPC.EMB.sbss0 output sections, we
2470 need to bump up the number of section headers. */
2471
2472 static int
2473 ppc_elf_additional_program_headers (bfd *abfd,
2474 struct bfd_link_info *info ATTRIBUTE_UNUSED)
2475 {
2476 asection *s;
2477 int ret = 0;
2478
2479 s = bfd_get_section_by_name (abfd, ".sbss2");
2480 if (s != NULL && (s->flags & SEC_ALLOC) != 0)
2481 ++ret;
2482
2483 s = bfd_get_section_by_name (abfd, ".PPC.EMB.sbss0");
2484 if (s != NULL && (s->flags & SEC_ALLOC) != 0)
2485 ++ret;
2486
2487 return ret;
2488 }
2489
2490 /* Modify the segment map for VLE executables. */
2491
2492 bfd_boolean
2493 ppc_elf_modify_segment_map (bfd *abfd,
2494 struct bfd_link_info *info ATTRIBUTE_UNUSED)
2495 {
2496 struct elf_segment_map *m;
2497
2498 /* At this point in the link, output sections have already been sorted by
2499 LMA and assigned to segments. All that is left to do is to ensure
2500 there is no mixing of VLE & non-VLE sections in a text segment.
2501 If we find that case, we split the segment.
2502 We maintain the original output section order. */
2503
2504 for (m = elf_seg_map (abfd); m != NULL; m = m->next)
2505 {
2506 struct elf_segment_map *n;
2507 bfd_size_type amt;
2508 unsigned int j, k;
2509 unsigned int p_flags;
2510
2511 if (m->p_type != PT_LOAD || m->count == 0)
2512 continue;
2513
2514 for (p_flags = PF_R, j = 0; j != m->count; ++j)
2515 {
2516 if ((m->sections[j]->flags & SEC_READONLY) == 0)
2517 p_flags |= PF_W;
2518 if ((m->sections[j]->flags & SEC_CODE) != 0)
2519 {
2520 p_flags |= PF_X;
2521 if ((elf_section_flags (m->sections[j]) & SHF_PPC_VLE) != 0)
2522 p_flags |= PF_PPC_VLE;
2523 break;
2524 }
2525 }
2526 if (j != m->count)
2527 while (++j != m->count)
2528 {
2529 unsigned int p_flags1 = PF_R;
2530
2531 if ((m->sections[j]->flags & SEC_READONLY) == 0)
2532 p_flags1 |= PF_W;
2533 if ((m->sections[j]->flags & SEC_CODE) != 0)
2534 {
2535 p_flags1 |= PF_X;
2536 if ((elf_section_flags (m->sections[j]) & SHF_PPC_VLE) != 0)
2537 p_flags1 |= PF_PPC_VLE;
2538 if (((p_flags1 ^ p_flags) & PF_PPC_VLE) != 0)
2539 break;
2540 }
2541 p_flags |= p_flags1;
2542 }
2543 /* If we're splitting a segment which originally contained rw
2544 sections then those sections might now only be in one of the
2545 two parts. So always set p_flags if splitting, even if we
2546 are being called for objcopy with p_flags_valid set. */
2547 if (j != m->count || !m->p_flags_valid)
2548 {
2549 m->p_flags_valid = 1;
2550 m->p_flags = p_flags;
2551 }
2552 if (j == m->count)
2553 continue;
2554
2555 /* Sections 0..j-1 stay in this (current) segment,
2556 the remainder are put in a new segment.
2557 The scan resumes with the new segment. */
2558
2559 amt = sizeof (struct elf_segment_map);
2560 amt += (m->count - j - 1) * sizeof (asection *);
2561 n = (struct elf_segment_map *) bfd_zalloc (abfd, amt);
2562 if (n == NULL)
2563 return FALSE;
2564
2565 n->p_type = PT_LOAD;
2566 n->count = m->count - j;
2567 for (k = 0; k < n->count; ++k)
2568 n->sections[k] = m->sections[j + k];
2569 m->count = j;
2570 m->p_size_valid = 0;
2571 n->next = m->next;
2572 m->next = n;
2573 }
2574
2575 return TRUE;
2576 }
2577
2578 /* Add extra PPC sections -- Note, for now, make .sbss2 and
2579 .PPC.EMB.sbss0 a normal section, and not a bss section so
2580 that the linker doesn't crater when trying to make more than
2581 2 sections. */
2582
2583 static const struct bfd_elf_special_section ppc_elf_special_sections[] =
2584 {
2585 { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, SHF_ALLOC + SHF_EXECINSTR },
2586 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2587 { STRING_COMMA_LEN (".sbss2"), -2, SHT_PROGBITS, SHF_ALLOC },
2588 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2589 { STRING_COMMA_LEN (".sdata2"), -2, SHT_PROGBITS, SHF_ALLOC },
2590 { STRING_COMMA_LEN (".tags"), 0, SHT_ORDERED, SHF_ALLOC },
2591 { STRING_COMMA_LEN (APUINFO_SECTION_NAME), 0, SHT_NOTE, 0 },
2592 { STRING_COMMA_LEN (".PPC.EMB.sbss0"), 0, SHT_PROGBITS, SHF_ALLOC },
2593 { STRING_COMMA_LEN (".PPC.EMB.sdata0"), 0, SHT_PROGBITS, SHF_ALLOC },
2594 { NULL, 0, 0, 0, 0 }
2595 };
2596
2597 /* This is what we want for new plt/got. */
2598 static struct bfd_elf_special_section ppc_alt_plt =
2599 { STRING_COMMA_LEN (".plt"), 0, SHT_PROGBITS, SHF_ALLOC };
2600
2601 static const struct bfd_elf_special_section *
2602 ppc_elf_get_sec_type_attr (bfd *abfd, asection *sec)
2603 {
2604 const struct bfd_elf_special_section *ssect;
2605
2606 /* See if this is one of the special sections. */
2607 if (sec->name == NULL)
2608 return NULL;
2609
2610 ssect = _bfd_elf_get_special_section (sec->name, ppc_elf_special_sections,
2611 sec->use_rela_p);
2612 if (ssect != NULL)
2613 {
2614 if (ssect == ppc_elf_special_sections && (sec->flags & SEC_LOAD) != 0)
2615 ssect = &ppc_alt_plt;
2616 return ssect;
2617 }
2618
2619 return _bfd_elf_get_sec_type_attr (abfd, sec);
2620 }
2621 \f
2622 /* Very simple linked list structure for recording apuinfo values. */
2623 typedef struct apuinfo_list
2624 {
2625 struct apuinfo_list *next;
2626 unsigned long value;
2627 }
2628 apuinfo_list;
2629
2630 static apuinfo_list *head;
2631 static bfd_boolean apuinfo_set;
2632
2633 static void
2634 apuinfo_list_init (void)
2635 {
2636 head = NULL;
2637 apuinfo_set = FALSE;
2638 }
2639
2640 static void
2641 apuinfo_list_add (unsigned long value)
2642 {
2643 apuinfo_list *entry = head;
2644
2645 while (entry != NULL)
2646 {
2647 if (entry->value == value)
2648 return;
2649 entry = entry->next;
2650 }
2651
2652 entry = bfd_malloc (sizeof (* entry));
2653 if (entry == NULL)
2654 return;
2655
2656 entry->value = value;
2657 entry->next = head;
2658 head = entry;
2659 }
2660
2661 static unsigned
2662 apuinfo_list_length (void)
2663 {
2664 apuinfo_list *entry;
2665 unsigned long count;
2666
2667 for (entry = head, count = 0;
2668 entry;
2669 entry = entry->next)
2670 ++ count;
2671
2672 return count;
2673 }
2674
2675 static inline unsigned long
2676 apuinfo_list_element (unsigned long number)
2677 {
2678 apuinfo_list * entry;
2679
2680 for (entry = head;
2681 entry && number --;
2682 entry = entry->next)
2683 ;
2684
2685 return entry ? entry->value : 0;
2686 }
2687
2688 static void
2689 apuinfo_list_finish (void)
2690 {
2691 apuinfo_list *entry;
2692
2693 for (entry = head; entry;)
2694 {
2695 apuinfo_list *next = entry->next;
2696 free (entry);
2697 entry = next;
2698 }
2699
2700 head = NULL;
2701 }
2702
2703 /* Scan the input BFDs and create a linked list of
2704 the APUinfo values that will need to be emitted. */
2705
2706 static void
2707 ppc_elf_begin_write_processing (bfd *abfd, struct bfd_link_info *link_info)
2708 {
2709 bfd *ibfd;
2710 asection *asec;
2711 char *buffer = NULL;
2712 bfd_size_type largest_input_size = 0;
2713 unsigned i;
2714 unsigned long length;
2715 const char *error_message = NULL;
2716
2717 if (link_info == NULL)
2718 return;
2719
2720 apuinfo_list_init ();
2721
2722 /* Read in the input sections contents. */
2723 for (ibfd = link_info->input_bfds; ibfd; ibfd = ibfd->link.next)
2724 {
2725 unsigned long datum;
2726
2727 asec = bfd_get_section_by_name (ibfd, APUINFO_SECTION_NAME);
2728 if (asec == NULL)
2729 continue;
2730
2731 /* xgettext:c-format */
2732 error_message = _("corrupt %s section in %B");
2733 length = asec->size;
2734 if (length < 20)
2735 goto fail;
2736
2737 apuinfo_set = TRUE;
2738 if (largest_input_size < asec->size)
2739 {
2740 if (buffer)
2741 free (buffer);
2742 largest_input_size = asec->size;
2743 buffer = bfd_malloc (largest_input_size);
2744 if (!buffer)
2745 return;
2746 }
2747
2748 if (bfd_seek (ibfd, asec->filepos, SEEK_SET) != 0
2749 || (bfd_bread (buffer, length, ibfd) != length))
2750 {
2751 /* xgettext:c-format */
2752 error_message = _("unable to read in %s section from %B");
2753 goto fail;
2754 }
2755
2756 /* Verify the contents of the header. Note - we have to
2757 extract the values this way in order to allow for a
2758 host whose endian-ness is different from the target. */
2759 datum = bfd_get_32 (ibfd, buffer);
2760 if (datum != sizeof APUINFO_LABEL)
2761 goto fail;
2762
2763 datum = bfd_get_32 (ibfd, buffer + 8);
2764 if (datum != 0x2)
2765 goto fail;
2766
2767 if (strcmp (buffer + 12, APUINFO_LABEL) != 0)
2768 goto fail;
2769
2770 /* Get the number of bytes used for apuinfo entries. */
2771 datum = bfd_get_32 (ibfd, buffer + 4);
2772 if (datum + 20 != length)
2773 goto fail;
2774
2775 /* Scan the apuinfo section, building a list of apuinfo numbers. */
2776 for (i = 0; i < datum; i += 4)
2777 apuinfo_list_add (bfd_get_32 (ibfd, buffer + 20 + i));
2778 }
2779
2780 error_message = NULL;
2781
2782 if (apuinfo_set)
2783 {
2784 /* Compute the size of the output section. */
2785 unsigned num_entries = apuinfo_list_length ();
2786
2787 /* Set the output section size, if it exists. */
2788 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2789
2790 if (asec && ! bfd_set_section_size (abfd, asec, 20 + num_entries * 4))
2791 {
2792 ibfd = abfd;
2793 /* xgettext:c-format */
2794 error_message = _("warning: unable to set size of %s section in %B");
2795 }
2796 }
2797
2798 fail:
2799 if (buffer)
2800 free (buffer);
2801
2802 if (error_message)
2803 _bfd_error_handler (error_message, APUINFO_SECTION_NAME, ibfd);
2804 }
2805
2806 /* Prevent the output section from accumulating the input sections'
2807 contents. We have already stored this in our linked list structure. */
2808
2809 static bfd_boolean
2810 ppc_elf_write_section (bfd *abfd ATTRIBUTE_UNUSED,
2811 struct bfd_link_info *link_info ATTRIBUTE_UNUSED,
2812 asection *asec,
2813 bfd_byte *contents ATTRIBUTE_UNUSED)
2814 {
2815 return apuinfo_set && strcmp (asec->name, APUINFO_SECTION_NAME) == 0;
2816 }
2817
2818 /* Finally we can generate the output section. */
2819
2820 static void
2821 ppc_elf_final_write_processing (bfd *abfd, bfd_boolean linker ATTRIBUTE_UNUSED)
2822 {
2823 bfd_byte *buffer;
2824 asection *asec;
2825 unsigned i;
2826 unsigned num_entries;
2827 bfd_size_type length;
2828
2829 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2830 if (asec == NULL)
2831 return;
2832
2833 if (!apuinfo_set)
2834 return;
2835
2836 length = asec->size;
2837 if (length < 20)
2838 return;
2839
2840 buffer = bfd_malloc (length);
2841 if (buffer == NULL)
2842 {
2843 _bfd_error_handler
2844 (_("failed to allocate space for new APUinfo section."));
2845 return;
2846 }
2847
2848 /* Create the apuinfo header. */
2849 num_entries = apuinfo_list_length ();
2850 bfd_put_32 (abfd, sizeof APUINFO_LABEL, buffer);
2851 bfd_put_32 (abfd, num_entries * 4, buffer + 4);
2852 bfd_put_32 (abfd, 0x2, buffer + 8);
2853 strcpy ((char *) buffer + 12, APUINFO_LABEL);
2854
2855 length = 20;
2856 for (i = 0; i < num_entries; i++)
2857 {
2858 bfd_put_32 (abfd, apuinfo_list_element (i), buffer + length);
2859 length += 4;
2860 }
2861
2862 if (length != asec->size)
2863 _bfd_error_handler (_("failed to compute new APUinfo section."));
2864
2865 if (! bfd_set_section_contents (abfd, asec, buffer, (file_ptr) 0, length))
2866 _bfd_error_handler (_("failed to install new APUinfo section."));
2867
2868 free (buffer);
2869
2870 apuinfo_list_finish ();
2871 }
2872 \f
2873 static bfd_boolean
2874 is_nonpic_glink_stub (bfd *abfd, asection *glink, bfd_vma off)
2875 {
2876 bfd_byte buf[GLINK_ENTRY_SIZE];
2877
2878 if (!bfd_get_section_contents (abfd, glink, buf, off, GLINK_ENTRY_SIZE))
2879 return FALSE;
2880
2881 return ((bfd_get_32 (abfd, buf + 0) & 0xffff0000) == LIS_11
2882 && (bfd_get_32 (abfd, buf + 4) & 0xffff0000) == LWZ_11_11
2883 && bfd_get_32 (abfd, buf + 8) == MTCTR_11
2884 && bfd_get_32 (abfd, buf + 12) == BCTR);
2885 }
2886
2887 static bfd_boolean
2888 section_covers_vma (bfd *abfd ATTRIBUTE_UNUSED, asection *section, void *ptr)
2889 {
2890 bfd_vma vma = *(bfd_vma *) ptr;
2891 return ((section->flags & SEC_ALLOC) != 0
2892 && section->vma <= vma
2893 && vma < section->vma + section->size);
2894 }
2895
2896 static long
2897 ppc_elf_get_synthetic_symtab (bfd *abfd, long symcount, asymbol **syms,
2898 long dynsymcount, asymbol **dynsyms,
2899 asymbol **ret)
2900 {
2901 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
2902 asection *plt, *relplt, *dynamic, *glink;
2903 bfd_vma glink_vma = 0;
2904 bfd_vma resolv_vma = 0;
2905 bfd_vma stub_vma;
2906 asymbol *s;
2907 arelent *p;
2908 long count, i;
2909 size_t size;
2910 char *names;
2911 bfd_byte buf[4];
2912
2913 *ret = NULL;
2914
2915 if ((abfd->flags & (DYNAMIC | EXEC_P)) == 0)
2916 return 0;
2917
2918 if (dynsymcount <= 0)
2919 return 0;
2920
2921 relplt = bfd_get_section_by_name (abfd, ".rela.plt");
2922 if (relplt == NULL)
2923 return 0;
2924
2925 plt = bfd_get_section_by_name (abfd, ".plt");
2926 if (plt == NULL)
2927 return 0;
2928
2929 /* Call common code to handle old-style executable PLTs. */
2930 if (elf_section_flags (plt) & SHF_EXECINSTR)
2931 return _bfd_elf_get_synthetic_symtab (abfd, symcount, syms,
2932 dynsymcount, dynsyms, ret);
2933
2934 /* If this object was prelinked, the prelinker stored the address
2935 of .glink at got[1]. If it wasn't prelinked, got[1] will be zero. */
2936 dynamic = bfd_get_section_by_name (abfd, ".dynamic");
2937 if (dynamic != NULL)
2938 {
2939 bfd_byte *dynbuf, *extdyn, *extdynend;
2940 size_t extdynsize;
2941 void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *);
2942
2943 if (!bfd_malloc_and_get_section (abfd, dynamic, &dynbuf))
2944 return -1;
2945
2946 extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn;
2947 swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in;
2948
2949 extdyn = dynbuf;
2950 extdynend = extdyn + dynamic->size;
2951 for (; extdyn < extdynend; extdyn += extdynsize)
2952 {
2953 Elf_Internal_Dyn dyn;
2954 (*swap_dyn_in) (abfd, extdyn, &dyn);
2955
2956 if (dyn.d_tag == DT_NULL)
2957 break;
2958
2959 if (dyn.d_tag == DT_PPC_GOT)
2960 {
2961 unsigned int g_o_t = dyn.d_un.d_val;
2962 asection *got = bfd_get_section_by_name (abfd, ".got");
2963 if (got != NULL
2964 && bfd_get_section_contents (abfd, got, buf,
2965 g_o_t - got->vma + 4, 4))
2966 glink_vma = bfd_get_32 (abfd, buf);
2967 break;
2968 }
2969 }
2970 free (dynbuf);
2971 }
2972
2973 /* Otherwise we read the first plt entry. */
2974 if (glink_vma == 0)
2975 {
2976 if (bfd_get_section_contents (abfd, plt, buf, 0, 4))
2977 glink_vma = bfd_get_32 (abfd, buf);
2978 }
2979
2980 if (glink_vma == 0)
2981 return 0;
2982
2983 /* The .glink section usually does not survive the final
2984 link; search for the section (usually .text) where the
2985 glink stubs now reside. */
2986 glink = bfd_sections_find_if (abfd, section_covers_vma, &glink_vma);
2987 if (glink == NULL)
2988 return 0;
2989
2990 /* Determine glink PLT resolver by reading the relative branch
2991 from the first glink stub. */
2992 if (bfd_get_section_contents (abfd, glink, buf,
2993 glink_vma - glink->vma, 4))
2994 {
2995 unsigned int insn = bfd_get_32 (abfd, buf);
2996
2997 /* The first glink stub may either branch to the resolver ... */
2998 insn ^= B;
2999 if ((insn & ~0x3fffffc) == 0)
3000 resolv_vma = glink_vma + (insn ^ 0x2000000) - 0x2000000;
3001
3002 /* ... or fall through a bunch of NOPs. */
3003 else if ((insn ^ B ^ NOP) == 0)
3004 for (i = 4;
3005 bfd_get_section_contents (abfd, glink, buf,
3006 glink_vma - glink->vma + i, 4);
3007 i += 4)
3008 if (bfd_get_32 (abfd, buf) != NOP)
3009 {
3010 resolv_vma = glink_vma + i;
3011 break;
3012 }
3013 }
3014
3015 count = relplt->size / sizeof (Elf32_External_Rela);
3016 /* If the stubs are those for -shared/-pie then we might have
3017 multiple stubs for each plt entry. If that is the case then
3018 there is no way to associate stubs with their plt entries short
3019 of figuring out the GOT pointer value used in the stub. */
3020 if (!is_nonpic_glink_stub (abfd, glink,
3021 glink_vma - GLINK_ENTRY_SIZE - glink->vma))
3022 return 0;
3023
3024 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
3025 if (! (*slurp_relocs) (abfd, relplt, dynsyms, TRUE))
3026 return -1;
3027
3028 size = count * sizeof (asymbol);
3029 p = relplt->relocation;
3030 for (i = 0; i < count; i++, p++)
3031 {
3032 size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt");
3033 if (p->addend != 0)
3034 size += sizeof ("+0x") - 1 + 8;
3035 }
3036
3037 size += sizeof (asymbol) + sizeof ("__glink");
3038
3039 if (resolv_vma)
3040 size += sizeof (asymbol) + sizeof ("__glink_PLTresolve");
3041
3042 s = *ret = bfd_malloc (size);
3043 if (s == NULL)
3044 return -1;
3045
3046 stub_vma = glink_vma;
3047 names = (char *) (s + count + 1 + (resolv_vma != 0));
3048 p = relplt->relocation + count - 1;
3049 for (i = 0; i < count; i++)
3050 {
3051 size_t len;
3052
3053 *s = **p->sym_ptr_ptr;
3054 /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since
3055 we are defining a symbol, ensure one of them is set. */
3056 if ((s->flags & BSF_LOCAL) == 0)
3057 s->flags |= BSF_GLOBAL;
3058 s->flags |= BSF_SYNTHETIC;
3059 s->section = glink;
3060 stub_vma -= 16;
3061 if (strcmp ((*p->sym_ptr_ptr)->name, "__tls_get_addr_opt") == 0)
3062 stub_vma -= 32;
3063 s->value = stub_vma - glink->vma;
3064 s->name = names;
3065 s->udata.p = NULL;
3066 len = strlen ((*p->sym_ptr_ptr)->name);
3067 memcpy (names, (*p->sym_ptr_ptr)->name, len);
3068 names += len;
3069 if (p->addend != 0)
3070 {
3071 memcpy (names, "+0x", sizeof ("+0x") - 1);
3072 names += sizeof ("+0x") - 1;
3073 bfd_sprintf_vma (abfd, names, p->addend);
3074 names += strlen (names);
3075 }
3076 memcpy (names, "@plt", sizeof ("@plt"));
3077 names += sizeof ("@plt");
3078 ++s;
3079 --p;
3080 }
3081
3082 /* Add a symbol at the start of the glink branch table. */
3083 memset (s, 0, sizeof *s);
3084 s->the_bfd = abfd;
3085 s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
3086 s->section = glink;
3087 s->value = glink_vma - glink->vma;
3088 s->name = names;
3089 memcpy (names, "__glink", sizeof ("__glink"));
3090 names += sizeof ("__glink");
3091 s++;
3092 count++;
3093
3094 if (resolv_vma)
3095 {
3096 /* Add a symbol for the glink PLT resolver. */
3097 memset (s, 0, sizeof *s);
3098 s->the_bfd = abfd;
3099 s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
3100 s->section = glink;
3101 s->value = resolv_vma - glink->vma;
3102 s->name = names;
3103 memcpy (names, "__glink_PLTresolve", sizeof ("__glink_PLTresolve"));
3104 names += sizeof ("__glink_PLTresolve");
3105 s++;
3106 count++;
3107 }
3108
3109 return count;
3110 }
3111 \f
3112 /* The following functions are specific to the ELF linker, while
3113 functions above are used generally. They appear in this file more
3114 or less in the order in which they are called. eg.
3115 ppc_elf_check_relocs is called early in the link process,
3116 ppc_elf_finish_dynamic_sections is one of the last functions
3117 called. */
3118
3119 /* Track PLT entries needed for a given symbol. We might need more
3120 than one glink entry per symbol when generating a pic binary. */
3121 struct plt_entry
3122 {
3123 struct plt_entry *next;
3124
3125 /* -fPIC uses multiple GOT sections, one per file, called ".got2".
3126 This field stores the offset into .got2 used to initialise the
3127 GOT pointer reg. It will always be at least 32768. (Current
3128 gcc always uses an offset of 32768, but ld -r will pack .got2
3129 sections together resulting in larger offsets). */
3130 bfd_vma addend;
3131
3132 /* The .got2 section. */
3133 asection *sec;
3134
3135 /* PLT refcount or offset. */
3136 union
3137 {
3138 bfd_signed_vma refcount;
3139 bfd_vma offset;
3140 } plt;
3141
3142 /* .glink stub offset. */
3143 bfd_vma glink_offset;
3144 };
3145
3146 /* Of those relocs that might be copied as dynamic relocs, this
3147 function selects those that must be copied when linking a shared
3148 library or PIE, even when the symbol is local. */
3149
3150 static int
3151 must_be_dyn_reloc (struct bfd_link_info *info,
3152 enum elf_ppc_reloc_type r_type)
3153 {
3154 switch (r_type)
3155 {
3156 default:
3157 /* Only relative relocs can be resolved when the object load
3158 address isn't fixed. DTPREL32 is excluded because the
3159 dynamic linker needs to differentiate global dynamic from
3160 local dynamic __tls_index pairs when PPC_OPT_TLS is set. */
3161 return 1;
3162
3163 case R_PPC_REL24:
3164 case R_PPC_REL14:
3165 case R_PPC_REL14_BRTAKEN:
3166 case R_PPC_REL14_BRNTAKEN:
3167 case R_PPC_REL32:
3168 return 0;
3169
3170 case R_PPC_TPREL32:
3171 case R_PPC_TPREL16:
3172 case R_PPC_TPREL16_LO:
3173 case R_PPC_TPREL16_HI:
3174 case R_PPC_TPREL16_HA:
3175 /* These relocations are relative but in a shared library the
3176 linker doesn't know the thread pointer base. */
3177 return bfd_link_dll (info);
3178 }
3179 }
3180
3181 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
3182 copying dynamic variables from a shared lib into an app's dynbss
3183 section, and instead use a dynamic relocation to point into the
3184 shared lib. */
3185 #define ELIMINATE_COPY_RELOCS 1
3186
3187 /* Used to track dynamic relocations for local symbols. */
3188 struct ppc_dyn_relocs
3189 {
3190 struct ppc_dyn_relocs *next;
3191
3192 /* The input section of the reloc. */
3193 asection *sec;
3194
3195 /* Total number of relocs copied for the input section. */
3196 unsigned int count : 31;
3197
3198 /* Whether this entry is for STT_GNU_IFUNC symbols. */
3199 unsigned int ifunc : 1;
3200 };
3201
3202 /* PPC ELF linker hash entry. */
3203
3204 struct ppc_elf_link_hash_entry
3205 {
3206 struct elf_link_hash_entry elf;
3207
3208 /* If this symbol is used in the linker created sections, the processor
3209 specific backend uses this field to map the field into the offset
3210 from the beginning of the section. */
3211 elf_linker_section_pointers_t *linker_section_pointer;
3212
3213 /* Track dynamic relocs copied for this symbol. */
3214 struct elf_dyn_relocs *dyn_relocs;
3215
3216 /* Contexts in which symbol is used in the GOT (or TOC).
3217 TLS_GD .. TLS_TLS bits are or'd into the mask as the
3218 corresponding relocs are encountered during check_relocs.
3219 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
3220 indicate the corresponding GOT entry type is not needed. */
3221 #define TLS_GD 1 /* GD reloc. */
3222 #define TLS_LD 2 /* LD reloc. */
3223 #define TLS_TPREL 4 /* TPREL reloc, => IE. */
3224 #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
3225 #define TLS_TLS 16 /* Any TLS reloc. */
3226 #define TLS_TPRELGD 32 /* TPREL reloc resulting from GD->IE. */
3227 #define PLT_IFUNC 64 /* STT_GNU_IFUNC. */
3228 char tls_mask;
3229
3230 /* Nonzero if we have seen a small data relocation referring to this
3231 symbol. */
3232 unsigned char has_sda_refs : 1;
3233
3234 /* Flag use of given relocations. */
3235 unsigned char has_addr16_ha : 1;
3236 unsigned char has_addr16_lo : 1;
3237 };
3238
3239 #define ppc_elf_hash_entry(ent) ((struct ppc_elf_link_hash_entry *) (ent))
3240
3241 /* PPC ELF linker hash table. */
3242
3243 struct ppc_elf_link_hash_table
3244 {
3245 struct elf_link_hash_table elf;
3246
3247 /* Various options passed from the linker. */
3248 struct ppc_elf_params *params;
3249
3250 /* Short-cuts to get to dynamic linker sections. */
3251 asection *glink;
3252 asection *dynsbss;
3253 asection *relsbss;
3254 elf_linker_section_t sdata[2];
3255 asection *sbss;
3256 asection *glink_eh_frame;
3257
3258 /* The (unloaded but important) .rela.plt.unloaded on VxWorks. */
3259 asection *srelplt2;
3260
3261 /* Shortcut to __tls_get_addr. */
3262 struct elf_link_hash_entry *tls_get_addr;
3263
3264 /* The bfd that forced an old-style PLT. */
3265 bfd *old_bfd;
3266
3267 /* TLS local dynamic got entry handling. */
3268 union {
3269 bfd_signed_vma refcount;
3270 bfd_vma offset;
3271 } tlsld_got;
3272
3273 /* Offset of branch table to PltResolve function in glink. */
3274 bfd_vma glink_pltresolve;
3275
3276 /* Size of reserved GOT entries. */
3277 unsigned int got_header_size;
3278 /* Non-zero if allocating the header left a gap. */
3279 unsigned int got_gap;
3280
3281 /* The type of PLT we have chosen to use. */
3282 enum ppc_elf_plt_type plt_type;
3283
3284 /* True if the target system is VxWorks. */
3285 unsigned int is_vxworks:1;
3286
3287 /* Whether there exist local gnu indirect function resolvers,
3288 referenced by dynamic relocations. */
3289 unsigned int local_ifunc_resolver:1;
3290 unsigned int maybe_local_ifunc_resolver:1;
3291
3292 /* Set if tls optimization is enabled. */
3293 unsigned int do_tls_opt:1;
3294
3295 /* The size of PLT entries. */
3296 int plt_entry_size;
3297 /* The distance between adjacent PLT slots. */
3298 int plt_slot_size;
3299 /* The size of the first PLT entry. */
3300 int plt_initial_entry_size;
3301
3302 /* Small local sym cache. */
3303 struct sym_cache sym_cache;
3304 };
3305
3306 /* Rename some of the generic section flags to better document how they
3307 are used for ppc32. The flags are only valid for ppc32 elf objects. */
3308
3309 /* Nonzero if this section has TLS related relocations. */
3310 #define has_tls_reloc sec_flg0
3311
3312 /* Nonzero if this section has a call to __tls_get_addr. */
3313 #define has_tls_get_addr_call sec_flg1
3314
3315 /* Get the PPC ELF linker hash table from a link_info structure. */
3316
3317 #define ppc_elf_hash_table(p) \
3318 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
3319 == PPC32_ELF_DATA ? ((struct ppc_elf_link_hash_table *) ((p)->hash)) : NULL)
3320
3321 /* Create an entry in a PPC ELF linker hash table. */
3322
3323 static struct bfd_hash_entry *
3324 ppc_elf_link_hash_newfunc (struct bfd_hash_entry *entry,
3325 struct bfd_hash_table *table,
3326 const char *string)
3327 {
3328 /* Allocate the structure if it has not already been allocated by a
3329 subclass. */
3330 if (entry == NULL)
3331 {
3332 entry = bfd_hash_allocate (table,
3333 sizeof (struct ppc_elf_link_hash_entry));
3334 if (entry == NULL)
3335 return entry;
3336 }
3337
3338 /* Call the allocation method of the superclass. */
3339 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
3340 if (entry != NULL)
3341 {
3342 ppc_elf_hash_entry (entry)->linker_section_pointer = NULL;
3343 ppc_elf_hash_entry (entry)->dyn_relocs = NULL;
3344 ppc_elf_hash_entry (entry)->tls_mask = 0;
3345 ppc_elf_hash_entry (entry)->has_sda_refs = 0;
3346 }
3347
3348 return entry;
3349 }
3350
3351 /* Create a PPC ELF linker hash table. */
3352
3353 static struct bfd_link_hash_table *
3354 ppc_elf_link_hash_table_create (bfd *abfd)
3355 {
3356 struct ppc_elf_link_hash_table *ret;
3357 static struct ppc_elf_params default_params
3358 = { PLT_OLD, 0, 1, 0, 0, 12, 0, 0, 0 };
3359
3360 ret = bfd_zmalloc (sizeof (struct ppc_elf_link_hash_table));
3361 if (ret == NULL)
3362 return NULL;
3363
3364 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd,
3365 ppc_elf_link_hash_newfunc,
3366 sizeof (struct ppc_elf_link_hash_entry),
3367 PPC32_ELF_DATA))
3368 {
3369 free (ret);
3370 return NULL;
3371 }
3372
3373 ret->elf.init_plt_refcount.refcount = 0;
3374 ret->elf.init_plt_refcount.glist = NULL;
3375 ret->elf.init_plt_offset.offset = 0;
3376 ret->elf.init_plt_offset.glist = NULL;
3377
3378 ret->params = &default_params;
3379
3380 ret->sdata[0].name = ".sdata";
3381 ret->sdata[0].sym_name = "_SDA_BASE_";
3382 ret->sdata[0].bss_name = ".sbss";
3383
3384 ret->sdata[1].name = ".sdata2";
3385 ret->sdata[1].sym_name = "_SDA2_BASE_";
3386 ret->sdata[1].bss_name = ".sbss2";
3387
3388 ret->plt_entry_size = 12;
3389 ret->plt_slot_size = 8;
3390 ret->plt_initial_entry_size = 72;
3391
3392 return &ret->elf.root;
3393 }
3394
3395 /* Hook linker params into hash table. */
3396
3397 void
3398 ppc_elf_link_params (struct bfd_link_info *info, struct ppc_elf_params *params)
3399 {
3400 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
3401
3402 if (htab)
3403 htab->params = params;
3404 params->pagesize_p2 = bfd_log2 (params->pagesize);
3405 }
3406
3407 /* Create .got and the related sections. */
3408
3409 static bfd_boolean
3410 ppc_elf_create_got (bfd *abfd, struct bfd_link_info *info)
3411 {
3412 struct ppc_elf_link_hash_table *htab;
3413
3414 if (!_bfd_elf_create_got_section (abfd, info))
3415 return FALSE;
3416
3417 htab = ppc_elf_hash_table (info);
3418 if (!htab->is_vxworks)
3419 {
3420 /* The powerpc .got has a blrl instruction in it. Mark it
3421 executable. */
3422 flagword flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS
3423 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3424 if (!bfd_set_section_flags (abfd, htab->elf.sgot, flags))
3425 return FALSE;
3426 }
3427
3428 return TRUE;
3429 }
3430
3431 /* Create a special linker section, used for R_PPC_EMB_SDAI16 and
3432 R_PPC_EMB_SDA2I16 pointers. These sections become part of .sdata
3433 and .sdata2. Create _SDA_BASE_ and _SDA2_BASE too. */
3434
3435 static bfd_boolean
3436 ppc_elf_create_linker_section (bfd *abfd,
3437 struct bfd_link_info *info,
3438 flagword flags,
3439 elf_linker_section_t *lsect)
3440 {
3441 asection *s;
3442
3443 flags |= (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
3444 | SEC_LINKER_CREATED);
3445
3446 s = bfd_make_section_anyway_with_flags (abfd, lsect->name, flags);
3447 if (s == NULL)
3448 return FALSE;
3449 lsect->section = s;
3450
3451 /* Define the sym on the first section of this name. */
3452 s = bfd_get_section_by_name (abfd, lsect->name);
3453
3454 lsect->sym = _bfd_elf_define_linkage_sym (abfd, info, s, lsect->sym_name);
3455 if (lsect->sym == NULL)
3456 return FALSE;
3457 lsect->sym->root.u.def.value = 0x8000;
3458 return TRUE;
3459 }
3460
3461 static bfd_boolean
3462 ppc_elf_create_glink (bfd *abfd, struct bfd_link_info *info)
3463 {
3464 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
3465 asection *s;
3466 flagword flags;
3467
3468 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY | SEC_HAS_CONTENTS
3469 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3470 s = bfd_make_section_anyway_with_flags (abfd, ".glink", flags);
3471 htab->glink = s;
3472 if (s == NULL
3473 || !bfd_set_section_alignment (abfd, s,
3474 htab->params->ppc476_workaround ? 6 : 4))
3475 return FALSE;
3476
3477 if (!info->no_ld_generated_unwind_info)
3478 {
3479 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
3480 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3481 s = bfd_make_section_anyway_with_flags (abfd, ".eh_frame", flags);
3482 htab->glink_eh_frame = s;
3483 if (s == NULL
3484 || !bfd_set_section_alignment (abfd, s, 2))
3485 return FALSE;
3486 }
3487
3488 flags = SEC_ALLOC | SEC_LINKER_CREATED;
3489 s = bfd_make_section_anyway_with_flags (abfd, ".iplt", flags);
3490 htab->elf.iplt = s;
3491 if (s == NULL
3492 || !bfd_set_section_alignment (abfd, s, 4))
3493 return FALSE;
3494
3495 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
3496 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3497 s = bfd_make_section_anyway_with_flags (abfd, ".rela.iplt", flags);
3498 htab->elf.irelplt = s;
3499 if (s == NULL
3500 || ! bfd_set_section_alignment (abfd, s, 2))
3501 return FALSE;
3502
3503 if (!ppc_elf_create_linker_section (abfd, info, 0,
3504 &htab->sdata[0]))
3505 return FALSE;
3506
3507 if (!ppc_elf_create_linker_section (abfd, info, SEC_READONLY,
3508 &htab->sdata[1]))
3509 return FALSE;
3510
3511 return TRUE;
3512 }
3513
3514 /* We have to create .dynsbss and .rela.sbss here so that they get mapped
3515 to output sections (just like _bfd_elf_create_dynamic_sections has
3516 to create .dynbss and .rela.bss). */
3517
3518 static bfd_boolean
3519 ppc_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
3520 {
3521 struct ppc_elf_link_hash_table *htab;
3522 asection *s;
3523 flagword flags;
3524
3525 htab = ppc_elf_hash_table (info);
3526
3527 if (htab->elf.sgot == NULL
3528 && !ppc_elf_create_got (abfd, info))
3529 return FALSE;
3530
3531 if (!_bfd_elf_create_dynamic_sections (abfd, info))
3532 return FALSE;
3533
3534 if (htab->glink == NULL
3535 && !ppc_elf_create_glink (abfd, info))
3536 return FALSE;
3537
3538 s = bfd_make_section_anyway_with_flags (abfd, ".dynsbss",
3539 SEC_ALLOC | SEC_LINKER_CREATED);
3540 htab->dynsbss = s;
3541 if (s == NULL)
3542 return FALSE;
3543
3544 if (! bfd_link_pic (info))
3545 {
3546 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
3547 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3548 s = bfd_make_section_anyway_with_flags (abfd, ".rela.sbss", flags);
3549 htab->relsbss = s;
3550 if (s == NULL
3551 || ! bfd_set_section_alignment (abfd, s, 2))
3552 return FALSE;
3553 }
3554
3555 if (htab->is_vxworks
3556 && !elf_vxworks_create_dynamic_sections (abfd, info, &htab->srelplt2))
3557 return FALSE;
3558
3559 s = htab->elf.splt;
3560 flags = SEC_ALLOC | SEC_CODE | SEC_LINKER_CREATED;
3561 if (htab->plt_type == PLT_VXWORKS)
3562 /* The VxWorks PLT is a loaded section with contents. */
3563 flags |= SEC_HAS_CONTENTS | SEC_LOAD | SEC_READONLY;
3564 return bfd_set_section_flags (abfd, s, flags);
3565 }
3566
3567 /* Copy the extra info we tack onto an elf_link_hash_entry. */
3568
3569 static void
3570 ppc_elf_copy_indirect_symbol (struct bfd_link_info *info,
3571 struct elf_link_hash_entry *dir,
3572 struct elf_link_hash_entry *ind)
3573 {
3574 struct ppc_elf_link_hash_entry *edir, *eind;
3575
3576 edir = (struct ppc_elf_link_hash_entry *) dir;
3577 eind = (struct ppc_elf_link_hash_entry *) ind;
3578
3579 edir->tls_mask |= eind->tls_mask;
3580 edir->has_sda_refs |= eind->has_sda_refs;
3581
3582 /* If called to transfer flags for a weakdef during processing
3583 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
3584 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
3585 if (!(ELIMINATE_COPY_RELOCS
3586 && eind->elf.root.type != bfd_link_hash_indirect
3587 && edir->elf.dynamic_adjusted))
3588 edir->elf.non_got_ref |= eind->elf.non_got_ref;
3589
3590 if (edir->elf.versioned != versioned_hidden)
3591 edir->elf.ref_dynamic |= eind->elf.ref_dynamic;
3592 edir->elf.ref_regular |= eind->elf.ref_regular;
3593 edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak;
3594 edir->elf.needs_plt |= eind->elf.needs_plt;
3595 edir->elf.pointer_equality_needed |= eind->elf.pointer_equality_needed;
3596
3597 if (eind->dyn_relocs != NULL)
3598 {
3599 if (edir->dyn_relocs != NULL)
3600 {
3601 struct elf_dyn_relocs **pp;
3602 struct elf_dyn_relocs *p;
3603
3604 /* Add reloc counts against the indirect sym to the direct sym
3605 list. Merge any entries against the same section. */
3606 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
3607 {
3608 struct elf_dyn_relocs *q;
3609
3610 for (q = edir->dyn_relocs; q != NULL; q = q->next)
3611 if (q->sec == p->sec)
3612 {
3613 q->pc_count += p->pc_count;
3614 q->count += p->count;
3615 *pp = p->next;
3616 break;
3617 }
3618 if (q == NULL)
3619 pp = &p->next;
3620 }
3621 *pp = edir->dyn_relocs;
3622 }
3623
3624 edir->dyn_relocs = eind->dyn_relocs;
3625 eind->dyn_relocs = NULL;
3626 }
3627
3628 /* If we were called to copy over info for a weak sym, that's all.
3629 You might think dyn_relocs need not be copied over; After all,
3630 both syms will be dynamic or both non-dynamic so we're just
3631 moving reloc accounting around. However, ELIMINATE_COPY_RELOCS
3632 code in ppc_elf_adjust_dynamic_symbol needs to check for
3633 dyn_relocs in read-only sections, and it does so on what is the
3634 DIR sym here. */
3635 if (eind->elf.root.type != bfd_link_hash_indirect)
3636 return;
3637
3638 /* Copy over the GOT refcount entries that we may have already seen to
3639 the symbol which just became indirect. */
3640 edir->elf.got.refcount += eind->elf.got.refcount;
3641 eind->elf.got.refcount = 0;
3642
3643 /* And plt entries. */
3644 if (eind->elf.plt.plist != NULL)
3645 {
3646 if (edir->elf.plt.plist != NULL)
3647 {
3648 struct plt_entry **entp;
3649 struct plt_entry *ent;
3650
3651 for (entp = &eind->elf.plt.plist; (ent = *entp) != NULL; )
3652 {
3653 struct plt_entry *dent;
3654
3655 for (dent = edir->elf.plt.plist; dent != NULL; dent = dent->next)
3656 if (dent->sec == ent->sec && dent->addend == ent->addend)
3657 {
3658 dent->plt.refcount += ent->plt.refcount;
3659 *entp = ent->next;
3660 break;
3661 }
3662 if (dent == NULL)
3663 entp = &ent->next;
3664 }
3665 *entp = edir->elf.plt.plist;
3666 }
3667
3668 edir->elf.plt.plist = eind->elf.plt.plist;
3669 eind->elf.plt.plist = NULL;
3670 }
3671
3672 if (eind->elf.dynindx != -1)
3673 {
3674 if (edir->elf.dynindx != -1)
3675 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
3676 edir->elf.dynstr_index);
3677 edir->elf.dynindx = eind->elf.dynindx;
3678 edir->elf.dynstr_index = eind->elf.dynstr_index;
3679 eind->elf.dynindx = -1;
3680 eind->elf.dynstr_index = 0;
3681 }
3682 }
3683
3684 /* Hook called by the linker routine which adds symbols from an object
3685 file. We use it to put .comm items in .sbss, and not .bss. */
3686
3687 static bfd_boolean
3688 ppc_elf_add_symbol_hook (bfd *abfd,
3689 struct bfd_link_info *info,
3690 Elf_Internal_Sym *sym,
3691 const char **namep ATTRIBUTE_UNUSED,
3692 flagword *flagsp ATTRIBUTE_UNUSED,
3693 asection **secp,
3694 bfd_vma *valp)
3695 {
3696 if (sym->st_shndx == SHN_COMMON
3697 && !bfd_link_relocatable (info)
3698 && is_ppc_elf (info->output_bfd)
3699 && sym->st_size <= elf_gp_size (abfd))
3700 {
3701 /* Common symbols less than or equal to -G nn bytes are automatically
3702 put into .sbss. */
3703 struct ppc_elf_link_hash_table *htab;
3704
3705 htab = ppc_elf_hash_table (info);
3706 if (htab->sbss == NULL)
3707 {
3708 flagword flags = SEC_IS_COMMON | SEC_LINKER_CREATED;
3709
3710 if (!htab->elf.dynobj)
3711 htab->elf.dynobj = abfd;
3712
3713 htab->sbss = bfd_make_section_anyway_with_flags (htab->elf.dynobj,
3714 ".sbss",
3715 flags);
3716 if (htab->sbss == NULL)
3717 return FALSE;
3718 }
3719
3720 *secp = htab->sbss;
3721 *valp = sym->st_size;
3722 }
3723
3724 if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC
3725 && (abfd->flags & DYNAMIC) == 0
3726 && bfd_get_flavour (info->output_bfd) == bfd_target_elf_flavour)
3727 elf_tdata (info->output_bfd)->has_gnu_symbols |= elf_gnu_symbol_ifunc;
3728
3729 return TRUE;
3730 }
3731 \f
3732 /* Find a linker generated pointer with a given addend and type. */
3733
3734 static elf_linker_section_pointers_t *
3735 elf_find_pointer_linker_section
3736 (elf_linker_section_pointers_t *linker_pointers,
3737 bfd_vma addend,
3738 elf_linker_section_t *lsect)
3739 {
3740 for ( ; linker_pointers != NULL; linker_pointers = linker_pointers->next)
3741 if (lsect == linker_pointers->lsect && addend == linker_pointers->addend)
3742 return linker_pointers;
3743
3744 return NULL;
3745 }
3746
3747 /* Allocate a pointer to live in a linker created section. */
3748
3749 static bfd_boolean
3750 elf_allocate_pointer_linker_section (bfd *abfd,
3751 elf_linker_section_t *lsect,
3752 struct elf_link_hash_entry *h,
3753 const Elf_Internal_Rela *rel)
3754 {
3755 elf_linker_section_pointers_t **ptr_linker_section_ptr = NULL;
3756 elf_linker_section_pointers_t *linker_section_ptr;
3757 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
3758 bfd_size_type amt;
3759
3760 BFD_ASSERT (lsect != NULL);
3761
3762 /* Is this a global symbol? */
3763 if (h != NULL)
3764 {
3765 struct ppc_elf_link_hash_entry *eh;
3766
3767 /* Has this symbol already been allocated? If so, our work is done. */
3768 eh = (struct ppc_elf_link_hash_entry *) h;
3769 if (elf_find_pointer_linker_section (eh->linker_section_pointer,
3770 rel->r_addend,
3771 lsect))
3772 return TRUE;
3773
3774 ptr_linker_section_ptr = &eh->linker_section_pointer;
3775 }
3776 else
3777 {
3778 BFD_ASSERT (is_ppc_elf (abfd));
3779
3780 /* Allocation of a pointer to a local symbol. */
3781 elf_linker_section_pointers_t **ptr = elf_local_ptr_offsets (abfd);
3782
3783 /* Allocate a table to hold the local symbols if first time. */
3784 if (!ptr)
3785 {
3786 unsigned int num_symbols = elf_symtab_hdr (abfd).sh_info;
3787
3788 amt = num_symbols;
3789 amt *= sizeof (elf_linker_section_pointers_t *);
3790 ptr = bfd_zalloc (abfd, amt);
3791
3792 if (!ptr)
3793 return FALSE;
3794
3795 elf_local_ptr_offsets (abfd) = ptr;
3796 }
3797
3798 /* Has this symbol already been allocated? If so, our work is done. */
3799 if (elf_find_pointer_linker_section (ptr[r_symndx],
3800 rel->r_addend,
3801 lsect))
3802 return TRUE;
3803
3804 ptr_linker_section_ptr = &ptr[r_symndx];
3805 }
3806
3807 /* Allocate space for a pointer in the linker section, and allocate
3808 a new pointer record from internal memory. */
3809 BFD_ASSERT (ptr_linker_section_ptr != NULL);
3810 amt = sizeof (elf_linker_section_pointers_t);
3811 linker_section_ptr = bfd_alloc (abfd, amt);
3812
3813 if (!linker_section_ptr)
3814 return FALSE;
3815
3816 linker_section_ptr->next = *ptr_linker_section_ptr;
3817 linker_section_ptr->addend = rel->r_addend;
3818 linker_section_ptr->lsect = lsect;
3819 *ptr_linker_section_ptr = linker_section_ptr;
3820
3821 if (!bfd_set_section_alignment (lsect->section->owner, lsect->section, 2))
3822 return FALSE;
3823 linker_section_ptr->offset = lsect->section->size;
3824 lsect->section->size += 4;
3825
3826 #ifdef DEBUG
3827 fprintf (stderr,
3828 "Create pointer in linker section %s, offset = %ld, section size = %ld\n",
3829 lsect->name, (long) linker_section_ptr->offset,
3830 (long) lsect->section->size);
3831 #endif
3832
3833 return TRUE;
3834 }
3835
3836 static struct plt_entry **
3837 update_local_sym_info (bfd *abfd,
3838 Elf_Internal_Shdr *symtab_hdr,
3839 unsigned long r_symndx,
3840 int tls_type)
3841 {
3842 bfd_signed_vma *local_got_refcounts = elf_local_got_refcounts (abfd);
3843 struct plt_entry **local_plt;
3844 char *local_got_tls_masks;
3845
3846 if (local_got_refcounts == NULL)
3847 {
3848 bfd_size_type size = symtab_hdr->sh_info;
3849
3850 size *= (sizeof (*local_got_refcounts)
3851 + sizeof (*local_plt)
3852 + sizeof (*local_got_tls_masks));
3853 local_got_refcounts = bfd_zalloc (abfd, size);
3854 if (local_got_refcounts == NULL)
3855 return NULL;
3856 elf_local_got_refcounts (abfd) = local_got_refcounts;
3857 }
3858
3859 local_plt = (struct plt_entry **) (local_got_refcounts + symtab_hdr->sh_info);
3860 local_got_tls_masks = (char *) (local_plt + symtab_hdr->sh_info);
3861 local_got_tls_masks[r_symndx] |= tls_type;
3862 if (tls_type != PLT_IFUNC)
3863 local_got_refcounts[r_symndx] += 1;
3864 return local_plt + r_symndx;
3865 }
3866
3867 static bfd_boolean
3868 update_plt_info (bfd *abfd, struct plt_entry **plist,
3869 asection *sec, bfd_vma addend)
3870 {
3871 struct plt_entry *ent;
3872
3873 if (addend < 32768)
3874 sec = NULL;
3875 for (ent = *plist; ent != NULL; ent = ent->next)
3876 if (ent->sec == sec && ent->addend == addend)
3877 break;
3878 if (ent == NULL)
3879 {
3880 bfd_size_type amt = sizeof (*ent);
3881 ent = bfd_alloc (abfd, amt);
3882 if (ent == NULL)
3883 return FALSE;
3884 ent->next = *plist;
3885 ent->sec = sec;
3886 ent->addend = addend;
3887 ent->plt.refcount = 0;
3888 *plist = ent;
3889 }
3890 ent->plt.refcount += 1;
3891 return TRUE;
3892 }
3893
3894 static struct plt_entry *
3895 find_plt_ent (struct plt_entry **plist, asection *sec, bfd_vma addend)
3896 {
3897 struct plt_entry *ent;
3898
3899 if (addend < 32768)
3900 sec = NULL;
3901 for (ent = *plist; ent != NULL; ent = ent->next)
3902 if (ent->sec == sec && ent->addend == addend)
3903 break;
3904 return ent;
3905 }
3906
3907 static bfd_boolean
3908 is_branch_reloc (enum elf_ppc_reloc_type r_type)
3909 {
3910 return (r_type == R_PPC_PLTREL24
3911 || r_type == R_PPC_LOCAL24PC
3912 || r_type == R_PPC_REL24
3913 || r_type == R_PPC_REL14
3914 || r_type == R_PPC_REL14_BRTAKEN
3915 || r_type == R_PPC_REL14_BRNTAKEN
3916 || r_type == R_PPC_ADDR24
3917 || r_type == R_PPC_ADDR14
3918 || r_type == R_PPC_ADDR14_BRTAKEN
3919 || r_type == R_PPC_ADDR14_BRNTAKEN
3920 || r_type == R_PPC_VLE_REL24);
3921 }
3922
3923 static void
3924 bad_shared_reloc (bfd *abfd, enum elf_ppc_reloc_type r_type)
3925 {
3926 _bfd_error_handler
3927 /* xgettext:c-format */
3928 (_("%B: relocation %s cannot be used when making a shared object"),
3929 abfd,
3930 ppc_elf_howto_table[r_type]->name);
3931 bfd_set_error (bfd_error_bad_value);
3932 }
3933
3934 /* Look through the relocs for a section during the first phase, and
3935 allocate space in the global offset table or procedure linkage
3936 table. */
3937
3938 static bfd_boolean
3939 ppc_elf_check_relocs (bfd *abfd,
3940 struct bfd_link_info *info,
3941 asection *sec,
3942 const Elf_Internal_Rela *relocs)
3943 {
3944 struct ppc_elf_link_hash_table *htab;
3945 Elf_Internal_Shdr *symtab_hdr;
3946 struct elf_link_hash_entry **sym_hashes;
3947 const Elf_Internal_Rela *rel;
3948 const Elf_Internal_Rela *rel_end;
3949 asection *got2, *sreloc;
3950 struct elf_link_hash_entry *tga;
3951
3952 if (bfd_link_relocatable (info))
3953 return TRUE;
3954
3955 /* Don't do anything special with non-loaded, non-alloced sections.
3956 In particular, any relocs in such sections should not affect GOT
3957 and PLT reference counting (ie. we don't allow them to create GOT
3958 or PLT entries), there's no possibility or desire to optimize TLS
3959 relocs, and there's not much point in propagating relocs to shared
3960 libs that the dynamic linker won't relocate. */
3961 if ((sec->flags & SEC_ALLOC) == 0)
3962 return TRUE;
3963
3964 #ifdef DEBUG
3965 _bfd_error_handler ("ppc_elf_check_relocs called for section %A in %B",
3966 sec, abfd);
3967 #endif
3968
3969 BFD_ASSERT (is_ppc_elf (abfd));
3970
3971 /* Initialize howto table if not already done. */
3972 if (!ppc_elf_howto_table[R_PPC_ADDR32])
3973 ppc_elf_howto_init ();
3974
3975 htab = ppc_elf_hash_table (info);
3976 if (htab->glink == NULL)
3977 {
3978 if (htab->elf.dynobj == NULL)
3979 htab->elf.dynobj = abfd;
3980 if (!ppc_elf_create_glink (htab->elf.dynobj, info))
3981 return FALSE;
3982 }
3983 tga = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
3984 FALSE, FALSE, TRUE);
3985 symtab_hdr = &elf_symtab_hdr (abfd);
3986 sym_hashes = elf_sym_hashes (abfd);
3987 got2 = bfd_get_section_by_name (abfd, ".got2");
3988 sreloc = NULL;
3989
3990 rel_end = relocs + sec->reloc_count;
3991 for (rel = relocs; rel < rel_end; rel++)
3992 {
3993 unsigned long r_symndx;
3994 enum elf_ppc_reloc_type r_type;
3995 struct elf_link_hash_entry *h;
3996 int tls_type;
3997 struct plt_entry **ifunc;
3998
3999 r_symndx = ELF32_R_SYM (rel->r_info);
4000 if (r_symndx < symtab_hdr->sh_info)
4001 h = NULL;
4002 else
4003 {
4004 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4005 while (h->root.type == bfd_link_hash_indirect
4006 || h->root.type == bfd_link_hash_warning)
4007 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4008
4009 /* PR15323, ref flags aren't set for references in the same
4010 object. */
4011 h->root.non_ir_ref_regular = 1;
4012 }
4013
4014 /* If a relocation refers to _GLOBAL_OFFSET_TABLE_, create the .got.
4015 This shows up in particular in an R_PPC_ADDR32 in the eabi
4016 startup code. */
4017 if (h != NULL
4018 && htab->elf.sgot == NULL
4019 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
4020 {
4021 if (htab->elf.dynobj == NULL)
4022 htab->elf.dynobj = abfd;
4023 if (!ppc_elf_create_got (htab->elf.dynobj, info))
4024 return FALSE;
4025 BFD_ASSERT (h == htab->elf.hgot);
4026 }
4027
4028 tls_type = 0;
4029 r_type = ELF32_R_TYPE (rel->r_info);
4030 ifunc = NULL;
4031 if (h == NULL && !htab->is_vxworks)
4032 {
4033 Elf_Internal_Sym *isym = bfd_sym_from_r_symndx (&htab->sym_cache,
4034 abfd, r_symndx);
4035 if (isym == NULL)
4036 return FALSE;
4037
4038 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
4039 {
4040 /* Set PLT_IFUNC flag for this sym, no GOT entry yet. */
4041 ifunc = update_local_sym_info (abfd, symtab_hdr, r_symndx,
4042 PLT_IFUNC);
4043 if (ifunc == NULL)
4044 return FALSE;
4045
4046 /* STT_GNU_IFUNC symbols must have a PLT entry;
4047 In a non-pie executable even when there are
4048 no plt calls. */
4049 if (!bfd_link_pic (info)
4050 || is_branch_reloc (r_type))
4051 {
4052 bfd_vma addend = 0;
4053 if (r_type == R_PPC_PLTREL24)
4054 {
4055 ppc_elf_tdata (abfd)->makes_plt_call = 1;
4056 if (bfd_link_pic (info))
4057 addend = rel->r_addend;
4058 }
4059 if (!update_plt_info (abfd, ifunc, got2, addend))
4060 return FALSE;
4061 }
4062 }
4063 }
4064
4065 if (!htab->is_vxworks
4066 && is_branch_reloc (r_type)
4067 && h != NULL
4068 && h == tga)
4069 {
4070 if (rel != relocs
4071 && (ELF32_R_TYPE (rel[-1].r_info) == R_PPC_TLSGD
4072 || ELF32_R_TYPE (rel[-1].r_info) == R_PPC_TLSLD))
4073 /* We have a new-style __tls_get_addr call with a marker
4074 reloc. */
4075 ;
4076 else
4077 /* Mark this section as having an old-style call. */
4078 sec->has_tls_get_addr_call = 1;
4079 }
4080
4081 switch (r_type)
4082 {
4083 case R_PPC_TLSGD:
4084 case R_PPC_TLSLD:
4085 /* These special tls relocs tie a call to __tls_get_addr with
4086 its parameter symbol. */
4087 break;
4088
4089 case R_PPC_GOT_TLSLD16:
4090 case R_PPC_GOT_TLSLD16_LO:
4091 case R_PPC_GOT_TLSLD16_HI:
4092 case R_PPC_GOT_TLSLD16_HA:
4093 tls_type = TLS_TLS | TLS_LD;
4094 goto dogottls;
4095
4096 case R_PPC_GOT_TLSGD16:
4097 case R_PPC_GOT_TLSGD16_LO:
4098 case R_PPC_GOT_TLSGD16_HI:
4099 case R_PPC_GOT_TLSGD16_HA:
4100 tls_type = TLS_TLS | TLS_GD;
4101 goto dogottls;
4102
4103 case R_PPC_GOT_TPREL16:
4104 case R_PPC_GOT_TPREL16_LO:
4105 case R_PPC_GOT_TPREL16_HI:
4106 case R_PPC_GOT_TPREL16_HA:
4107 if (bfd_link_dll (info))
4108 info->flags |= DF_STATIC_TLS;
4109 tls_type = TLS_TLS | TLS_TPREL;
4110 goto dogottls;
4111
4112 case R_PPC_GOT_DTPREL16:
4113 case R_PPC_GOT_DTPREL16_LO:
4114 case R_PPC_GOT_DTPREL16_HI:
4115 case R_PPC_GOT_DTPREL16_HA:
4116 tls_type = TLS_TLS | TLS_DTPREL;
4117 dogottls:
4118 sec->has_tls_reloc = 1;
4119 /* Fall through. */
4120
4121 /* GOT16 relocations */
4122 case R_PPC_GOT16:
4123 case R_PPC_GOT16_LO:
4124 case R_PPC_GOT16_HI:
4125 case R_PPC_GOT16_HA:
4126 /* This symbol requires a global offset table entry. */
4127 if (htab->elf.sgot == NULL)
4128 {
4129 if (htab->elf.dynobj == NULL)
4130 htab->elf.dynobj = abfd;
4131 if (!ppc_elf_create_got (htab->elf.dynobj, info))
4132 return FALSE;
4133 }
4134 if (h != NULL)
4135 {
4136 h->got.refcount += 1;
4137 ppc_elf_hash_entry (h)->tls_mask |= tls_type;
4138 }
4139 else
4140 /* This is a global offset table entry for a local symbol. */
4141 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, tls_type))
4142 return FALSE;
4143
4144 /* We may also need a plt entry if the symbol turns out to be
4145 an ifunc. */
4146 if (h != NULL && !bfd_link_pic (info))
4147 {
4148 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
4149 return FALSE;
4150 }
4151 break;
4152
4153 /* Indirect .sdata relocation. */
4154 case R_PPC_EMB_SDAI16:
4155 if (bfd_link_pic (info))
4156 {
4157 bad_shared_reloc (abfd, r_type);
4158 return FALSE;
4159 }
4160 htab->sdata[0].sym->ref_regular = 1;
4161 if (!elf_allocate_pointer_linker_section (abfd, &htab->sdata[0],
4162 h, rel))
4163 return FALSE;
4164 if (h != NULL)
4165 {
4166 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4167 h->non_got_ref = TRUE;
4168 }
4169 break;
4170
4171 /* Indirect .sdata2 relocation. */
4172 case R_PPC_EMB_SDA2I16:
4173 if (bfd_link_pic (info))
4174 {
4175 bad_shared_reloc (abfd, r_type);
4176 return FALSE;
4177 }
4178 htab->sdata[1].sym->ref_regular = 1;
4179 if (!elf_allocate_pointer_linker_section (abfd, &htab->sdata[1],
4180 h, rel))
4181 return FALSE;
4182 if (h != NULL)
4183 {
4184 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4185 h->non_got_ref = TRUE;
4186 }
4187 break;
4188
4189 case R_PPC_SDAREL16:
4190 htab->sdata[0].sym->ref_regular = 1;
4191 /* Fall through. */
4192
4193 case R_PPC_VLE_SDAREL_LO16A:
4194 case R_PPC_VLE_SDAREL_LO16D:
4195 case R_PPC_VLE_SDAREL_HI16A:
4196 case R_PPC_VLE_SDAREL_HI16D:
4197 case R_PPC_VLE_SDAREL_HA16A:
4198 case R_PPC_VLE_SDAREL_HA16D:
4199 if (h != NULL)
4200 {
4201 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4202 h->non_got_ref = TRUE;
4203 }
4204 break;
4205
4206 case R_PPC_VLE_REL8:
4207 case R_PPC_VLE_REL15:
4208 case R_PPC_VLE_REL24:
4209 case R_PPC_VLE_LO16A:
4210 case R_PPC_VLE_LO16D:
4211 case R_PPC_VLE_HI16A:
4212 case R_PPC_VLE_HI16D:
4213 case R_PPC_VLE_HA16A:
4214 case R_PPC_VLE_HA16D:
4215 case R_PPC_VLE_ADDR20:
4216 break;
4217
4218 case R_PPC_EMB_SDA2REL:
4219 if (bfd_link_pic (info))
4220 {
4221 bad_shared_reloc (abfd, r_type);
4222 return FALSE;
4223 }
4224 htab->sdata[1].sym->ref_regular = 1;
4225 if (h != NULL)
4226 {
4227 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4228 h->non_got_ref = TRUE;
4229 }
4230 break;
4231
4232 case R_PPC_VLE_SDA21_LO:
4233 case R_PPC_VLE_SDA21:
4234 case R_PPC_EMB_SDA21:
4235 case R_PPC_EMB_RELSDA:
4236 if (bfd_link_pic (info))
4237 {
4238 bad_shared_reloc (abfd, r_type);
4239 return FALSE;
4240 }
4241 if (h != NULL)
4242 {
4243 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4244 h->non_got_ref = TRUE;
4245 }
4246 break;
4247
4248 case R_PPC_EMB_NADDR32:
4249 case R_PPC_EMB_NADDR16:
4250 case R_PPC_EMB_NADDR16_LO:
4251 case R_PPC_EMB_NADDR16_HI:
4252 case R_PPC_EMB_NADDR16_HA:
4253 if (bfd_link_pic (info))
4254 {
4255 bad_shared_reloc (abfd, r_type);
4256 return FALSE;
4257 }
4258 if (h != NULL)
4259 h->non_got_ref = TRUE;
4260 break;
4261
4262 case R_PPC_PLTREL24:
4263 if (h == NULL)
4264 break;
4265 /* Fall through */
4266 case R_PPC_PLT32:
4267 case R_PPC_PLTREL32:
4268 case R_PPC_PLT16_LO:
4269 case R_PPC_PLT16_HI:
4270 case R_PPC_PLT16_HA:
4271 #ifdef DEBUG
4272 fprintf (stderr, "Reloc requires a PLT entry\n");
4273 #endif
4274 /* This symbol requires a procedure linkage table entry. */
4275 if (h == NULL)
4276 {
4277 if (ifunc == NULL)
4278 {
4279 /* It does not make sense to have a procedure linkage
4280 table entry for a non-ifunc local symbol. */
4281 info->callbacks->einfo
4282 /* xgettext:c-format */
4283 (_("%H: %s reloc against local symbol\n"),
4284 abfd, sec, rel->r_offset,
4285 ppc_elf_howto_table[r_type]->name);
4286 bfd_set_error (bfd_error_bad_value);
4287 return FALSE;
4288 }
4289 }
4290 else
4291 {
4292 bfd_vma addend = 0;
4293
4294 if (r_type == R_PPC_PLTREL24)
4295 {
4296 ppc_elf_tdata (abfd)->makes_plt_call = 1;
4297 if (bfd_link_pic (info))
4298 addend = rel->r_addend;
4299 }
4300 h->needs_plt = 1;
4301 if (!update_plt_info (abfd, &h->plt.plist, got2, addend))
4302 return FALSE;
4303 }
4304 break;
4305
4306 /* The following relocations don't need to propagate the
4307 relocation if linking a shared object since they are
4308 section relative. */
4309 case R_PPC_SECTOFF:
4310 case R_PPC_SECTOFF_LO:
4311 case R_PPC_SECTOFF_HI:
4312 case R_PPC_SECTOFF_HA:
4313 case R_PPC_DTPREL16:
4314 case R_PPC_DTPREL16_LO:
4315 case R_PPC_DTPREL16_HI:
4316 case R_PPC_DTPREL16_HA:
4317 case R_PPC_TOC16:
4318 break;
4319
4320 case R_PPC_REL16:
4321 case R_PPC_REL16_LO:
4322 case R_PPC_REL16_HI:
4323 case R_PPC_REL16_HA:
4324 case R_PPC_REL16DX_HA:
4325 ppc_elf_tdata (abfd)->has_rel16 = 1;
4326 break;
4327
4328 /* These are just markers. */
4329 case R_PPC_TLS:
4330 case R_PPC_EMB_MRKREF:
4331 case R_PPC_NONE:
4332 case R_PPC_max:
4333 case R_PPC_RELAX:
4334 case R_PPC_RELAX_PLT:
4335 case R_PPC_RELAX_PLTREL24:
4336 case R_PPC_16DX_HA:
4337 break;
4338
4339 /* These should only appear in dynamic objects. */
4340 case R_PPC_COPY:
4341 case R_PPC_GLOB_DAT:
4342 case R_PPC_JMP_SLOT:
4343 case R_PPC_RELATIVE:
4344 case R_PPC_IRELATIVE:
4345 break;
4346
4347 /* These aren't handled yet. We'll report an error later. */
4348 case R_PPC_ADDR30:
4349 case R_PPC_EMB_RELSEC16:
4350 case R_PPC_EMB_RELST_LO:
4351 case R_PPC_EMB_RELST_HI:
4352 case R_PPC_EMB_RELST_HA:
4353 case R_PPC_EMB_BIT_FLD:
4354 break;
4355
4356 /* This refers only to functions defined in the shared library. */
4357 case R_PPC_LOCAL24PC:
4358 if (h != NULL && h == htab->elf.hgot && htab->plt_type == PLT_UNSET)
4359 {
4360 htab->plt_type = PLT_OLD;
4361 htab->old_bfd = abfd;
4362 }
4363 if (h != NULL && h->type == STT_GNU_IFUNC)
4364 {
4365 h->needs_plt = 1;
4366 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
4367 return FALSE;
4368 }
4369 break;
4370
4371 /* This relocation describes the C++ object vtable hierarchy.
4372 Reconstruct it for later use during GC. */
4373 case R_PPC_GNU_VTINHERIT:
4374 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
4375 return FALSE;
4376 break;
4377
4378 /* This relocation describes which C++ vtable entries are actually
4379 used. Record for later use during GC. */
4380 case R_PPC_GNU_VTENTRY:
4381 BFD_ASSERT (h != NULL);
4382 if (h != NULL
4383 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
4384 return FALSE;
4385 break;
4386
4387 /* We shouldn't really be seeing TPREL32. */
4388 case R_PPC_TPREL32:
4389 case R_PPC_TPREL16:
4390 case R_PPC_TPREL16_LO:
4391 case R_PPC_TPREL16_HI:
4392 case R_PPC_TPREL16_HA:
4393 if (bfd_link_dll (info))
4394 info->flags |= DF_STATIC_TLS;
4395 goto dodyn;
4396
4397 /* Nor these. */
4398 case R_PPC_DTPMOD32:
4399 case R_PPC_DTPREL32:
4400 goto dodyn;
4401
4402 case R_PPC_REL32:
4403 if (h == NULL
4404 && got2 != NULL
4405 && (sec->flags & SEC_CODE) != 0
4406 && bfd_link_pic (info)
4407 && htab->plt_type == PLT_UNSET)
4408 {
4409 /* Old -fPIC gcc code has .long LCTOC1-LCFx just before
4410 the start of a function, which assembles to a REL32
4411 reference to .got2. If we detect one of these, then
4412 force the old PLT layout because the linker cannot
4413 reliably deduce the GOT pointer value needed for
4414 PLT call stubs. */
4415 asection *s;
4416 Elf_Internal_Sym *isym;
4417
4418 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
4419 abfd, r_symndx);
4420 if (isym == NULL)
4421 return FALSE;
4422
4423 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
4424 if (s == got2)
4425 {
4426 htab->plt_type = PLT_OLD;
4427 htab->old_bfd = abfd;
4428 }
4429 }
4430 if (h == NULL || h == htab->elf.hgot)
4431 break;
4432 /* fall through */
4433
4434 case R_PPC_ADDR32:
4435 case R_PPC_ADDR16:
4436 case R_PPC_ADDR16_LO:
4437 case R_PPC_ADDR16_HI:
4438 case R_PPC_ADDR16_HA:
4439 case R_PPC_UADDR32:
4440 case R_PPC_UADDR16:
4441 if (h != NULL && !bfd_link_pic (info))
4442 {
4443 /* We may need a plt entry if the symbol turns out to be
4444 a function defined in a dynamic object. */
4445 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
4446 return FALSE;
4447
4448 /* We may need a copy reloc too. */
4449 h->non_got_ref = 1;
4450 h->pointer_equality_needed = 1;
4451 if (r_type == R_PPC_ADDR16_HA)
4452 ppc_elf_hash_entry (h)->has_addr16_ha = 1;
4453 if (r_type == R_PPC_ADDR16_LO)
4454 ppc_elf_hash_entry (h)->has_addr16_lo = 1;
4455 }
4456 goto dodyn;
4457
4458 case R_PPC_REL24:
4459 case R_PPC_REL14:
4460 case R_PPC_REL14_BRTAKEN:
4461 case R_PPC_REL14_BRNTAKEN:
4462 if (h == NULL)
4463 break;
4464 if (h == htab->elf.hgot)
4465 {
4466 if (htab->plt_type == PLT_UNSET)
4467 {
4468 htab->plt_type = PLT_OLD;
4469 htab->old_bfd = abfd;
4470 }
4471 break;
4472 }
4473 /* fall through */
4474
4475 case R_PPC_ADDR24:
4476 case R_PPC_ADDR14:
4477 case R_PPC_ADDR14_BRTAKEN:
4478 case R_PPC_ADDR14_BRNTAKEN:
4479 if (h != NULL && !bfd_link_pic (info))
4480 {
4481 /* We may need a plt entry if the symbol turns out to be
4482 a function defined in a dynamic object. */
4483 h->needs_plt = 1;
4484 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
4485 return FALSE;
4486 break;
4487 }
4488
4489 dodyn:
4490 /* If we are creating a shared library, and this is a reloc
4491 against a global symbol, or a non PC relative reloc
4492 against a local symbol, then we need to copy the reloc
4493 into the shared library. However, if we are linking with
4494 -Bsymbolic, we do not need to copy a reloc against a
4495 global symbol which is defined in an object we are
4496 including in the link (i.e., DEF_REGULAR is set). At
4497 this point we have not seen all the input files, so it is
4498 possible that DEF_REGULAR is not set now but will be set
4499 later (it is never cleared). In case of a weak definition,
4500 DEF_REGULAR may be cleared later by a strong definition in
4501 a shared library. We account for that possibility below by
4502 storing information in the dyn_relocs field of the hash
4503 table entry. A similar situation occurs when creating
4504 shared libraries and symbol visibility changes render the
4505 symbol local.
4506
4507 If on the other hand, we are creating an executable, we
4508 may need to keep relocations for symbols satisfied by a
4509 dynamic library if we manage to avoid copy relocs for the
4510 symbol. */
4511 if ((bfd_link_pic (info)
4512 && (must_be_dyn_reloc (info, r_type)
4513 || (h != NULL
4514 && (!SYMBOLIC_BIND (info, h)
4515 || h->root.type == bfd_link_hash_defweak
4516 || !h->def_regular))))
4517 || (ELIMINATE_COPY_RELOCS
4518 && !bfd_link_pic (info)
4519 && h != NULL
4520 && (h->root.type == bfd_link_hash_defweak
4521 || !h->def_regular)))
4522 {
4523 #ifdef DEBUG
4524 fprintf (stderr,
4525 "ppc_elf_check_relocs needs to "
4526 "create relocation for %s\n",
4527 (h && h->root.root.string
4528 ? h->root.root.string : "<unknown>"));
4529 #endif
4530 if (sreloc == NULL)
4531 {
4532 if (htab->elf.dynobj == NULL)
4533 htab->elf.dynobj = abfd;
4534
4535 sreloc = _bfd_elf_make_dynamic_reloc_section
4536 (sec, htab->elf.dynobj, 2, abfd, /*rela?*/ TRUE);
4537
4538 if (sreloc == NULL)
4539 return FALSE;
4540 }
4541
4542 /* If this is a global symbol, we count the number of
4543 relocations we need for this symbol. */
4544 if (h != NULL)
4545 {
4546 struct elf_dyn_relocs *p;
4547 struct elf_dyn_relocs **rel_head;
4548
4549 rel_head = &ppc_elf_hash_entry (h)->dyn_relocs;
4550 p = *rel_head;
4551 if (p == NULL || p->sec != sec)
4552 {
4553 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
4554 if (p == NULL)
4555 return FALSE;
4556 p->next = *rel_head;
4557 *rel_head = p;
4558 p->sec = sec;
4559 p->count = 0;
4560 p->pc_count = 0;
4561 }
4562 p->count += 1;
4563 if (!must_be_dyn_reloc (info, r_type))
4564 p->pc_count += 1;
4565 }
4566 else
4567 {
4568 /* Track dynamic relocs needed for local syms too.
4569 We really need local syms available to do this
4570 easily. Oh well. */
4571 struct ppc_dyn_relocs *p;
4572 struct ppc_dyn_relocs **rel_head;
4573 bfd_boolean is_ifunc;
4574 asection *s;
4575 void *vpp;
4576 Elf_Internal_Sym *isym;
4577
4578 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
4579 abfd, r_symndx);
4580 if (isym == NULL)
4581 return FALSE;
4582
4583 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
4584 if (s == NULL)
4585 s = sec;
4586
4587 vpp = &elf_section_data (s)->local_dynrel;
4588 rel_head = (struct ppc_dyn_relocs **) vpp;
4589 is_ifunc = ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC;
4590 p = *rel_head;
4591 if (p != NULL && p->sec == sec && p->ifunc != is_ifunc)
4592 p = p->next;
4593 if (p == NULL || p->sec != sec || p->ifunc != is_ifunc)
4594 {
4595 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
4596 if (p == NULL)
4597 return FALSE;
4598 p->next = *rel_head;
4599 *rel_head = p;
4600 p->sec = sec;
4601 p->ifunc = is_ifunc;
4602 p->count = 0;
4603 }
4604 p->count += 1;
4605 }
4606 }
4607
4608 break;
4609 }
4610 }
4611
4612 return TRUE;
4613 }
4614 \f
4615 /* Warn for conflicting Tag_GNU_Power_ABI_FP attributes between IBFD
4616 and OBFD, and merge non-conflicting ones. */
4617 void
4618 _bfd_elf_ppc_merge_fp_attributes (bfd *ibfd, struct bfd_link_info *info)
4619 {
4620 bfd *obfd = info->output_bfd;
4621 obj_attribute *in_attr, *in_attrs;
4622 obj_attribute *out_attr, *out_attrs;
4623
4624 in_attrs = elf_known_obj_attributes (ibfd)[OBJ_ATTR_GNU];
4625 out_attrs = elf_known_obj_attributes (obfd)[OBJ_ATTR_GNU];
4626
4627 in_attr = &in_attrs[Tag_GNU_Power_ABI_FP];
4628 out_attr = &out_attrs[Tag_GNU_Power_ABI_FP];
4629
4630 if (in_attr->i != out_attr->i)
4631 {
4632 int in_fp = in_attr->i & 3;
4633 int out_fp = out_attr->i & 3;
4634
4635 if (in_fp == 0)
4636 ;
4637 else if (out_fp == 0)
4638 {
4639 out_attr->type = 1;
4640 out_attr->i ^= in_fp;
4641 }
4642 else if (out_fp != 2 && in_fp == 2)
4643 _bfd_error_handler
4644 /* xgettext:c-format */
4645 (_("Warning: %B uses hard float, %B uses soft float"), obfd, ibfd);
4646 else if (out_fp == 2 && in_fp != 2)
4647 _bfd_error_handler
4648 /* xgettext:c-format */
4649 (_("Warning: %B uses hard float, %B uses soft float"), ibfd, obfd);
4650 else if (out_fp == 1 && in_fp == 3)
4651 _bfd_error_handler
4652 /* xgettext:c-format */
4653 (_("Warning: %B uses double-precision hard float, "
4654 "%B uses single-precision hard float"), obfd, ibfd);
4655 else if (out_fp == 3 && in_fp == 1)
4656 _bfd_error_handler
4657 /* xgettext:c-format */
4658 (_("Warning: %B uses double-precision hard float, "
4659 "%B uses single-precision hard float"), ibfd, obfd);
4660
4661 in_fp = in_attr->i & 0xc;
4662 out_fp = out_attr->i & 0xc;
4663 if (in_fp == 0)
4664 ;
4665 else if (out_fp == 0)
4666 {
4667 out_attr->type = 1;
4668 out_attr->i ^= in_fp;
4669 }
4670 else if (out_fp != 2 * 4 && in_fp == 2 * 4)
4671 _bfd_error_handler
4672 /* xgettext:c-format */
4673 (_("Warning: %B uses 64-bit long double, "
4674 "%B uses 128-bit long double"), ibfd, obfd);
4675 else if (in_fp != 2 * 4 && out_fp == 2 * 4)
4676 _bfd_error_handler
4677 /* xgettext:c-format */
4678 (_("Warning: %B uses 64-bit long double, "
4679 "%B uses 128-bit long double"), obfd, ibfd);
4680 else if (out_fp == 1 * 4 && in_fp == 3 * 4)
4681 _bfd_error_handler
4682 /* xgettext:c-format */
4683 (_("Warning: %B uses IBM long double, "
4684 "%B uses IEEE long double"), ibfd, obfd);
4685 else if (out_fp == 3 * 4 && in_fp == 1 * 4)
4686 _bfd_error_handler
4687 /* xgettext:c-format */
4688 (_("Warning: %B uses IBM long double, "
4689 "%B uses IEEE long double"), obfd, ibfd);
4690 }
4691 }
4692
4693 /* Merge object attributes from IBFD into OBFD. Warn if
4694 there are conflicting attributes. */
4695 static bfd_boolean
4696 ppc_elf_merge_obj_attributes (bfd *ibfd, struct bfd_link_info *info)
4697 {
4698 bfd *obfd;
4699 obj_attribute *in_attr, *in_attrs;
4700 obj_attribute *out_attr, *out_attrs;
4701
4702 _bfd_elf_ppc_merge_fp_attributes (ibfd, info);
4703
4704 obfd = info->output_bfd;
4705 in_attrs = elf_known_obj_attributes (ibfd)[OBJ_ATTR_GNU];
4706 out_attrs = elf_known_obj_attributes (obfd)[OBJ_ATTR_GNU];
4707
4708 /* Check for conflicting Tag_GNU_Power_ABI_Vector attributes and
4709 merge non-conflicting ones. */
4710 in_attr = &in_attrs[Tag_GNU_Power_ABI_Vector];
4711 out_attr = &out_attrs[Tag_GNU_Power_ABI_Vector];
4712 if (in_attr->i != out_attr->i)
4713 {
4714 int in_vec = in_attr->i & 3;
4715 int out_vec = out_attr->i & 3;
4716
4717 if (in_vec == 0)
4718 ;
4719 else if (out_vec == 0)
4720 {
4721 out_attr->type = 1;
4722 out_attr->i = in_vec;
4723 }
4724 /* For now, allow generic to transition to AltiVec or SPE
4725 without a warning. If GCC marked files with their stack
4726 alignment and used don't-care markings for files which are
4727 not affected by the vector ABI, we could warn about this
4728 case too. */
4729 else if (in_vec == 1)
4730 ;
4731 else if (out_vec == 1)
4732 {
4733 out_attr->type = 1;
4734 out_attr->i = in_vec;
4735 }
4736 else if (out_vec < in_vec)
4737 _bfd_error_handler
4738 /* xgettext:c-format */
4739 (_("Warning: %B uses AltiVec vector ABI, %B uses SPE vector ABI"),
4740 obfd, ibfd);
4741 else if (out_vec > in_vec)
4742 _bfd_error_handler
4743 /* xgettext:c-format */
4744 (_("Warning: %B uses AltiVec vector ABI, %B uses SPE vector ABI"),
4745 ibfd, obfd);
4746 }
4747
4748 /* Check for conflicting Tag_GNU_Power_ABI_Struct_Return attributes
4749 and merge non-conflicting ones. */
4750 in_attr = &in_attrs[Tag_GNU_Power_ABI_Struct_Return];
4751 out_attr = &out_attrs[Tag_GNU_Power_ABI_Struct_Return];
4752 if (in_attr->i != out_attr->i)
4753 {
4754 int in_struct = in_attr->i & 3;
4755 int out_struct = out_attr->i & 3;
4756
4757 if (in_struct == 0 || in_struct == 3)
4758 ;
4759 else if (out_struct == 0)
4760 {
4761 out_attr->type = 1;
4762 out_attr->i = in_struct;
4763 }
4764 else if (out_struct < in_struct)
4765 _bfd_error_handler
4766 /* xgettext:c-format */
4767 (_("Warning: %B uses r3/r4 for small structure returns, "
4768 "%B uses memory"), obfd, ibfd);
4769 else if (out_struct > in_struct)
4770 _bfd_error_handler
4771 /* xgettext:c-format */
4772 (_("Warning: %B uses r3/r4 for small structure returns, "
4773 "%B uses memory"), ibfd, obfd);
4774 }
4775
4776 /* Merge Tag_compatibility attributes and any common GNU ones. */
4777 _bfd_elf_merge_object_attributes (ibfd, info);
4778
4779 return TRUE;
4780 }
4781
4782 /* Merge backend specific data from an object file to the output
4783 object file when linking. */
4784
4785 static bfd_boolean
4786 ppc_elf_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info)
4787 {
4788 bfd *obfd = info->output_bfd;
4789 flagword old_flags;
4790 flagword new_flags;
4791 bfd_boolean error;
4792
4793 if (!is_ppc_elf (ibfd) || !is_ppc_elf (obfd))
4794 return TRUE;
4795
4796 /* Check if we have the same endianness. */
4797 if (! _bfd_generic_verify_endian_match (ibfd, info))
4798 return FALSE;
4799
4800 if (!ppc_elf_merge_obj_attributes (ibfd, info))
4801 return FALSE;
4802
4803 new_flags = elf_elfheader (ibfd)->e_flags;
4804 old_flags = elf_elfheader (obfd)->e_flags;
4805 if (!elf_flags_init (obfd))
4806 {
4807 /* First call, no flags set. */
4808 elf_flags_init (obfd) = TRUE;
4809 elf_elfheader (obfd)->e_flags = new_flags;
4810 }
4811
4812 /* Compatible flags are ok. */
4813 else if (new_flags == old_flags)
4814 ;
4815
4816 /* Incompatible flags. */
4817 else
4818 {
4819 /* Warn about -mrelocatable mismatch. Allow -mrelocatable-lib
4820 to be linked with either. */
4821 error = FALSE;
4822 if ((new_flags & EF_PPC_RELOCATABLE) != 0
4823 && (old_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0)
4824 {
4825 error = TRUE;
4826 _bfd_error_handler
4827 (_("%B: compiled with -mrelocatable and linked with "
4828 "modules compiled normally"), ibfd);
4829 }
4830 else if ((new_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0
4831 && (old_flags & EF_PPC_RELOCATABLE) != 0)
4832 {
4833 error = TRUE;
4834 _bfd_error_handler
4835 (_("%B: compiled normally and linked with "
4836 "modules compiled with -mrelocatable"), ibfd);
4837 }
4838
4839 /* The output is -mrelocatable-lib iff both the input files are. */
4840 if (! (new_flags & EF_PPC_RELOCATABLE_LIB))
4841 elf_elfheader (obfd)->e_flags &= ~EF_PPC_RELOCATABLE_LIB;
4842
4843 /* The output is -mrelocatable iff it can't be -mrelocatable-lib,
4844 but each input file is either -mrelocatable or -mrelocatable-lib. */
4845 if (! (elf_elfheader (obfd)->e_flags & EF_PPC_RELOCATABLE_LIB)
4846 && (new_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE))
4847 && (old_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE)))
4848 elf_elfheader (obfd)->e_flags |= EF_PPC_RELOCATABLE;
4849
4850 /* Do not warn about eabi vs. V.4 mismatch, just or in the bit if
4851 any module uses it. */
4852 elf_elfheader (obfd)->e_flags |= (new_flags & EF_PPC_EMB);
4853
4854 new_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
4855 old_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
4856
4857 /* Warn about any other mismatches. */
4858 if (new_flags != old_flags)
4859 {
4860 error = TRUE;
4861 _bfd_error_handler
4862 /* xgettext:c-format */
4863 (_("%B: uses different e_flags (%#x) fields "
4864 "than previous modules (%#x)"),
4865 ibfd, new_flags, old_flags);
4866 }
4867
4868 if (error)
4869 {
4870 bfd_set_error (bfd_error_bad_value);
4871 return FALSE;
4872 }
4873 }
4874
4875 return TRUE;
4876 }
4877
4878 static void
4879 ppc_elf_vle_split16 (bfd *input_bfd,
4880 asection *input_section,
4881 unsigned long offset,
4882 bfd_byte *loc,
4883 bfd_vma value,
4884 split16_format_type split16_format,
4885 bfd_boolean fixup)
4886 {
4887 unsigned int insn, opcode, top5;
4888
4889 insn = bfd_get_32 (input_bfd, loc);
4890 opcode = insn & 0xfc00f800;
4891 if (opcode == E_OR2I_INSN
4892 || opcode == E_AND2I_DOT_INSN
4893 || opcode == E_OR2IS_INSN
4894 || opcode == E_LIS_INSN
4895 || opcode == E_AND2IS_DOT_INSN)
4896 {
4897 if (split16_format != split16a_type)
4898 {
4899 if (fixup)
4900 split16_format = split16a_type;
4901 else
4902 _bfd_error_handler
4903 /* xgettext:c-format */
4904 (_("%B(%A+0x%lx): expected 16A style relocation on 0x%08x insn"),
4905 input_bfd, input_section, offset, opcode);
4906 }
4907 }
4908 else if (opcode == E_ADD2I_DOT_INSN
4909 || opcode == E_ADD2IS_INSN
4910 || opcode == E_CMP16I_INSN
4911 || opcode == E_MULL2I_INSN
4912 || opcode == E_CMPL16I_INSN
4913 || opcode == E_CMPH16I_INSN
4914 || opcode == E_CMPHL16I_INSN)
4915 {
4916 if (split16_format != split16d_type)
4917 {
4918 if (fixup)
4919 split16_format = split16d_type;
4920 else
4921 _bfd_error_handler
4922 /* xgettext:c-format */
4923 (_("%B(%A+0x%lx): expected 16D style relocation on 0x%08x insn"),
4924 input_bfd, input_section, offset, opcode);
4925 }
4926 }
4927 top5 = value & 0xf800;
4928 top5 = top5 << (split16_format == split16a_type ? 5 : 10);
4929 insn &= (split16_format == split16a_type ? ~0x1f07ff : ~0x3e007ff);
4930 insn |= top5;
4931 insn |= value & 0x7ff;
4932 bfd_put_32 (input_bfd, insn, loc);
4933 }
4934
4935 static void
4936 ppc_elf_vle_split20 (bfd *output_bfd, bfd_byte *loc, bfd_vma value)
4937 {
4938 unsigned int insn;
4939
4940 insn = bfd_get_32 (output_bfd, loc);
4941 /* We have an li20 field, bits 17..20, 11..15, 21..31. */
4942 /* Top 4 bits of value to 17..20. */
4943 insn |= (value & 0xf0000) >> 5;
4944 /* Next 5 bits of the value to 11..15. */
4945 insn |= (value & 0xf800) << 5;
4946 /* And the final 11 bits of the value to bits 21 to 31. */
4947 insn |= value & 0x7ff;
4948 bfd_put_32 (output_bfd, insn, loc);
4949 }
4950
4951 \f
4952 /* Choose which PLT scheme to use, and set .plt flags appropriately.
4953 Returns -1 on error, 0 for old PLT, 1 for new PLT. */
4954 int
4955 ppc_elf_select_plt_layout (bfd *output_bfd ATTRIBUTE_UNUSED,
4956 struct bfd_link_info *info)
4957 {
4958 struct ppc_elf_link_hash_table *htab;
4959 flagword flags;
4960
4961 htab = ppc_elf_hash_table (info);
4962
4963 if (htab->plt_type == PLT_UNSET)
4964 {
4965 struct elf_link_hash_entry *h;
4966
4967 if (htab->params->plt_style == PLT_OLD)
4968 htab->plt_type = PLT_OLD;
4969 else if (bfd_link_pic (info)
4970 && htab->elf.dynamic_sections_created
4971 && (h = elf_link_hash_lookup (&htab->elf, "_mcount",
4972 FALSE, FALSE, TRUE)) != NULL
4973 && (h->type == STT_FUNC
4974 || h->needs_plt)
4975 && h->ref_regular
4976 && !(SYMBOL_CALLS_LOCAL (info, h)
4977 || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)))
4978 {
4979 /* Profiling of shared libs (and pies) is not supported with
4980 secure plt, because ppc32 does profiling before a
4981 function prologue and a secure plt pic call stubs needs
4982 r30 to be set up. */
4983 htab->plt_type = PLT_OLD;
4984 }
4985 else
4986 {
4987 bfd *ibfd;
4988 enum ppc_elf_plt_type plt_type = htab->params->plt_style;
4989
4990 /* Look through the reloc flags left by ppc_elf_check_relocs.
4991 Use the old style bss plt if a file makes plt calls
4992 without using the new relocs, and if ld isn't given
4993 --secure-plt and we never see REL16 relocs. */
4994 if (plt_type == PLT_UNSET)
4995 plt_type = PLT_OLD;
4996 for (ibfd = info->input_bfds; ibfd; ibfd = ibfd->link.next)
4997 if (is_ppc_elf (ibfd))
4998 {
4999 if (ppc_elf_tdata (ibfd)->has_rel16)
5000 plt_type = PLT_NEW;
5001 else if (ppc_elf_tdata (ibfd)->makes_plt_call)
5002 {
5003 plt_type = PLT_OLD;
5004 htab->old_bfd = ibfd;
5005 break;
5006 }
5007 }
5008 htab->plt_type = plt_type;
5009 }
5010 }
5011 if (htab->plt_type == PLT_OLD && htab->params->plt_style == PLT_NEW)
5012 {
5013 if (htab->old_bfd != NULL)
5014 info->callbacks->einfo (_("%P: bss-plt forced due to %B\n"),
5015 htab->old_bfd);
5016 else
5017 info->callbacks->einfo (_("%P: bss-plt forced by profiling\n"));
5018 }
5019
5020 BFD_ASSERT (htab->plt_type != PLT_VXWORKS);
5021
5022 if (htab->plt_type == PLT_NEW)
5023 {
5024 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
5025 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
5026
5027 /* The new PLT is a loaded section. */
5028 if (htab->elf.splt != NULL
5029 && !bfd_set_section_flags (htab->elf.dynobj, htab->elf.splt, flags))
5030 return -1;
5031
5032 /* The new GOT is not executable. */
5033 if (htab->elf.sgot != NULL
5034 && !bfd_set_section_flags (htab->elf.dynobj, htab->elf.sgot, flags))
5035 return -1;
5036 }
5037 else
5038 {
5039 /* Stop an unused .glink section from affecting .text alignment. */
5040 if (htab->glink != NULL
5041 && !bfd_set_section_alignment (htab->elf.dynobj, htab->glink, 0))
5042 return -1;
5043 }
5044 return htab->plt_type == PLT_NEW;
5045 }
5046 \f
5047 /* Return the section that should be marked against GC for a given
5048 relocation. */
5049
5050 static asection *
5051 ppc_elf_gc_mark_hook (asection *sec,
5052 struct bfd_link_info *info,
5053 Elf_Internal_Rela *rel,
5054 struct elf_link_hash_entry *h,
5055 Elf_Internal_Sym *sym)
5056 {
5057 if (h != NULL)
5058 switch (ELF32_R_TYPE (rel->r_info))
5059 {
5060 case R_PPC_GNU_VTINHERIT:
5061 case R_PPC_GNU_VTENTRY:
5062 return NULL;
5063 }
5064
5065 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
5066 }
5067 \f
5068 /* Set plt output section type, htab->tls_get_addr, and call the
5069 generic ELF tls_setup function. */
5070
5071 asection *
5072 ppc_elf_tls_setup (bfd *obfd, struct bfd_link_info *info)
5073 {
5074 struct ppc_elf_link_hash_table *htab;
5075
5076 htab = ppc_elf_hash_table (info);
5077 htab->tls_get_addr = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
5078 FALSE, FALSE, TRUE);
5079 if (htab->plt_type != PLT_NEW)
5080 htab->params->no_tls_get_addr_opt = TRUE;
5081
5082 if (!htab->params->no_tls_get_addr_opt)
5083 {
5084 struct elf_link_hash_entry *opt, *tga;
5085 opt = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_opt",
5086 FALSE, FALSE, TRUE);
5087 if (opt != NULL
5088 && (opt->root.type == bfd_link_hash_defined
5089 || opt->root.type == bfd_link_hash_defweak))
5090 {
5091 /* If glibc supports an optimized __tls_get_addr call stub,
5092 signalled by the presence of __tls_get_addr_opt, and we'll
5093 be calling __tls_get_addr via a plt call stub, then
5094 make __tls_get_addr point to __tls_get_addr_opt. */
5095 tga = htab->tls_get_addr;
5096 if (htab->elf.dynamic_sections_created
5097 && tga != NULL
5098 && (tga->type == STT_FUNC
5099 || tga->needs_plt)
5100 && !(SYMBOL_CALLS_LOCAL (info, tga)
5101 || UNDEFWEAK_NO_DYNAMIC_RELOC (info, tga)))
5102 {
5103 struct plt_entry *ent;
5104 for (ent = tga->plt.plist; ent != NULL; ent = ent->next)
5105 if (ent->plt.refcount > 0)
5106 break;
5107 if (ent != NULL)
5108 {
5109 tga->root.type = bfd_link_hash_indirect;
5110 tga->root.u.i.link = &opt->root;
5111 ppc_elf_copy_indirect_symbol (info, opt, tga);
5112 opt->mark = 1;
5113 if (opt->dynindx != -1)
5114 {
5115 /* Use __tls_get_addr_opt in dynamic relocations. */
5116 opt->dynindx = -1;
5117 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
5118 opt->dynstr_index);
5119 if (!bfd_elf_link_record_dynamic_symbol (info, opt))
5120 return FALSE;
5121 }
5122 htab->tls_get_addr = opt;
5123 }
5124 }
5125 }
5126 else
5127 htab->params->no_tls_get_addr_opt = TRUE;
5128 }
5129 if (htab->plt_type == PLT_NEW
5130 && htab->elf.splt != NULL
5131 && htab->elf.splt->output_section != NULL)
5132 {
5133 elf_section_type (htab->elf.splt->output_section) = SHT_PROGBITS;
5134 elf_section_flags (htab->elf.splt->output_section) = SHF_ALLOC + SHF_WRITE;
5135 }
5136
5137 return _bfd_elf_tls_setup (obfd, info);
5138 }
5139
5140 /* Return TRUE iff REL is a branch reloc with a global symbol matching
5141 HASH. */
5142
5143 static bfd_boolean
5144 branch_reloc_hash_match (const bfd *ibfd,
5145 const Elf_Internal_Rela *rel,
5146 const struct elf_link_hash_entry *hash)
5147 {
5148 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
5149 enum elf_ppc_reloc_type r_type = ELF32_R_TYPE (rel->r_info);
5150 unsigned int r_symndx = ELF32_R_SYM (rel->r_info);
5151
5152 if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type))
5153 {
5154 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
5155 struct elf_link_hash_entry *h;
5156
5157 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5158 while (h->root.type == bfd_link_hash_indirect
5159 || h->root.type == bfd_link_hash_warning)
5160 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5161 if (h == hash)
5162 return TRUE;
5163 }
5164 return FALSE;
5165 }
5166
5167 /* Run through all the TLS relocs looking for optimization
5168 opportunities. */
5169
5170 bfd_boolean
5171 ppc_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED,
5172 struct bfd_link_info *info)
5173 {
5174 bfd *ibfd;
5175 asection *sec;
5176 struct ppc_elf_link_hash_table *htab;
5177 int pass;
5178
5179 if (!bfd_link_executable (info))
5180 return TRUE;
5181
5182 htab = ppc_elf_hash_table (info);
5183 if (htab == NULL)
5184 return FALSE;
5185
5186 /* Make two passes through the relocs. First time check that tls
5187 relocs involved in setting up a tls_get_addr call are indeed
5188 followed by such a call. If they are not, don't do any tls
5189 optimization. On the second pass twiddle tls_mask flags to
5190 notify relocate_section that optimization can be done, and
5191 adjust got and plt refcounts. */
5192 for (pass = 0; pass < 2; ++pass)
5193 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
5194 {
5195 Elf_Internal_Sym *locsyms = NULL;
5196 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
5197 asection *got2 = bfd_get_section_by_name (ibfd, ".got2");
5198
5199 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
5200 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
5201 {
5202 Elf_Internal_Rela *relstart, *rel, *relend;
5203 int expecting_tls_get_addr = 0;
5204
5205 /* Read the relocations. */
5206 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
5207 info->keep_memory);
5208 if (relstart == NULL)
5209 return FALSE;
5210
5211 relend = relstart + sec->reloc_count;
5212 for (rel = relstart; rel < relend; rel++)
5213 {
5214 enum elf_ppc_reloc_type r_type;
5215 unsigned long r_symndx;
5216 struct elf_link_hash_entry *h = NULL;
5217 char *tls_mask;
5218 char tls_set, tls_clear;
5219 bfd_boolean is_local;
5220 bfd_signed_vma *got_count;
5221
5222 r_symndx = ELF32_R_SYM (rel->r_info);
5223 if (r_symndx >= symtab_hdr->sh_info)
5224 {
5225 struct elf_link_hash_entry **sym_hashes;
5226
5227 sym_hashes = elf_sym_hashes (ibfd);
5228 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5229 while (h->root.type == bfd_link_hash_indirect
5230 || h->root.type == bfd_link_hash_warning)
5231 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5232 }
5233
5234 is_local = FALSE;
5235 if (h == NULL
5236 || !h->def_dynamic)
5237 is_local = TRUE;
5238
5239 r_type = ELF32_R_TYPE (rel->r_info);
5240 /* If this section has old-style __tls_get_addr calls
5241 without marker relocs, then check that each
5242 __tls_get_addr call reloc is preceded by a reloc
5243 that conceivably belongs to the __tls_get_addr arg
5244 setup insn. If we don't find matching arg setup
5245 relocs, don't do any tls optimization. */
5246 if (pass == 0
5247 && sec->has_tls_get_addr_call
5248 && h != NULL
5249 && h == htab->tls_get_addr
5250 && !expecting_tls_get_addr
5251 && is_branch_reloc (r_type))
5252 {
5253 info->callbacks->minfo ("%H __tls_get_addr lost arg, "
5254 "TLS optimization disabled\n",
5255 ibfd, sec, rel->r_offset);
5256 if (elf_section_data (sec)->relocs != relstart)
5257 free (relstart);
5258 return TRUE;
5259 }
5260
5261 expecting_tls_get_addr = 0;
5262 switch (r_type)
5263 {
5264 case R_PPC_GOT_TLSLD16:
5265 case R_PPC_GOT_TLSLD16_LO:
5266 expecting_tls_get_addr = 1;
5267 /* Fall through. */
5268
5269 case R_PPC_GOT_TLSLD16_HI:
5270 case R_PPC_GOT_TLSLD16_HA:
5271 /* These relocs should never be against a symbol
5272 defined in a shared lib. Leave them alone if
5273 that turns out to be the case. */
5274 if (!is_local)
5275 continue;
5276
5277 /* LD -> LE */
5278 tls_set = 0;
5279 tls_clear = TLS_LD;
5280 break;
5281
5282 case R_PPC_GOT_TLSGD16:
5283 case R_PPC_GOT_TLSGD16_LO:
5284 expecting_tls_get_addr = 1;
5285 /* Fall through. */
5286
5287 case R_PPC_GOT_TLSGD16_HI:
5288 case R_PPC_GOT_TLSGD16_HA:
5289 if (is_local)
5290 /* GD -> LE */
5291 tls_set = 0;
5292 else
5293 /* GD -> IE */
5294 tls_set = TLS_TLS | TLS_TPRELGD;
5295 tls_clear = TLS_GD;
5296 break;
5297
5298 case R_PPC_GOT_TPREL16:
5299 case R_PPC_GOT_TPREL16_LO:
5300 case R_PPC_GOT_TPREL16_HI:
5301 case R_PPC_GOT_TPREL16_HA:
5302 if (is_local)
5303 {
5304 /* IE -> LE */
5305 tls_set = 0;
5306 tls_clear = TLS_TPREL;
5307 break;
5308 }
5309 else
5310 continue;
5311
5312 case R_PPC_TLSGD:
5313 case R_PPC_TLSLD:
5314 expecting_tls_get_addr = 2;
5315 tls_set = 0;
5316 tls_clear = 0;
5317 break;
5318
5319 default:
5320 continue;
5321 }
5322
5323 if (pass == 0)
5324 {
5325 if (!expecting_tls_get_addr
5326 || (expecting_tls_get_addr == 1
5327 && !sec->has_tls_get_addr_call))
5328 continue;
5329
5330 if (rel + 1 < relend
5331 && branch_reloc_hash_match (ibfd, rel + 1,
5332 htab->tls_get_addr))
5333 continue;
5334
5335 /* Uh oh, we didn't find the expected call. We
5336 could just mark this symbol to exclude it
5337 from tls optimization but it's safer to skip
5338 the entire optimization. */
5339 info->callbacks->minfo (_("%H arg lost __tls_get_addr, "
5340 "TLS optimization disabled\n"),
5341 ibfd, sec, rel->r_offset);
5342 if (elf_section_data (sec)->relocs != relstart)
5343 free (relstart);
5344 return TRUE;
5345 }
5346
5347 if (expecting_tls_get_addr)
5348 {
5349 struct plt_entry *ent;
5350 bfd_vma addend = 0;
5351
5352 if (bfd_link_pic (info)
5353 && ELF32_R_TYPE (rel[1].r_info) == R_PPC_PLTREL24)
5354 addend = rel[1].r_addend;
5355 ent = find_plt_ent (&htab->tls_get_addr->plt.plist,
5356 got2, addend);
5357 if (ent != NULL && ent->plt.refcount > 0)
5358 ent->plt.refcount -= 1;
5359
5360 if (expecting_tls_get_addr == 2)
5361 continue;
5362 }
5363
5364 if (h != NULL)
5365 {
5366 tls_mask = &ppc_elf_hash_entry (h)->tls_mask;
5367 got_count = &h->got.refcount;
5368 }
5369 else
5370 {
5371 bfd_signed_vma *lgot_refs;
5372 struct plt_entry **local_plt;
5373 char *lgot_masks;
5374
5375 if (locsyms == NULL)
5376 {
5377 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
5378 if (locsyms == NULL)
5379 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
5380 symtab_hdr->sh_info,
5381 0, NULL, NULL, NULL);
5382 if (locsyms == NULL)
5383 {
5384 if (elf_section_data (sec)->relocs != relstart)
5385 free (relstart);
5386 return FALSE;
5387 }
5388 }
5389 lgot_refs = elf_local_got_refcounts (ibfd);
5390 if (lgot_refs == NULL)
5391 abort ();
5392 local_plt = (struct plt_entry **)
5393 (lgot_refs + symtab_hdr->sh_info);
5394 lgot_masks = (char *) (local_plt + symtab_hdr->sh_info);
5395 tls_mask = &lgot_masks[r_symndx];
5396 got_count = &lgot_refs[r_symndx];
5397 }
5398
5399 if (tls_set == 0)
5400 {
5401 /* We managed to get rid of a got entry. */
5402 if (*got_count > 0)
5403 *got_count -= 1;
5404 }
5405
5406 *tls_mask |= tls_set;
5407 *tls_mask &= ~tls_clear;
5408 }
5409
5410 if (elf_section_data (sec)->relocs != relstart)
5411 free (relstart);
5412 }
5413
5414 if (locsyms != NULL
5415 && (symtab_hdr->contents != (unsigned char *) locsyms))
5416 {
5417 if (!info->keep_memory)
5418 free (locsyms);
5419 else
5420 symtab_hdr->contents = (unsigned char *) locsyms;
5421 }
5422 }
5423 htab->do_tls_opt = 1;
5424 return TRUE;
5425 }
5426 \f
5427 /* Find dynamic relocs for H that apply to read-only sections. */
5428
5429 static asection *
5430 readonly_dynrelocs (struct elf_link_hash_entry *h)
5431 {
5432 struct elf_dyn_relocs *p;
5433
5434 for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next)
5435 {
5436 asection *s = p->sec->output_section;
5437
5438 if (s != NULL && (s->flags & SEC_READONLY) != 0)
5439 return p->sec;
5440 }
5441 return NULL;
5442 }
5443
5444 /* Adjust a symbol defined by a dynamic object and referenced by a
5445 regular object. The current definition is in some section of the
5446 dynamic object, but we're not including those sections. We have to
5447 change the definition to something the rest of the link can
5448 understand. */
5449
5450 static bfd_boolean
5451 ppc_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
5452 struct elf_link_hash_entry *h)
5453 {
5454 struct ppc_elf_link_hash_table *htab;
5455 asection *s;
5456
5457 #ifdef DEBUG
5458 fprintf (stderr, "ppc_elf_adjust_dynamic_symbol called for %s\n",
5459 h->root.root.string);
5460 #endif
5461
5462 /* Make sure we know what is going on here. */
5463 htab = ppc_elf_hash_table (info);
5464 BFD_ASSERT (htab->elf.dynobj != NULL
5465 && (h->needs_plt
5466 || h->type == STT_GNU_IFUNC
5467 || h->u.weakdef != NULL
5468 || (h->def_dynamic
5469 && h->ref_regular
5470 && !h->def_regular)));
5471
5472 /* Deal with function syms. */
5473 if (h->type == STT_FUNC
5474 || h->type == STT_GNU_IFUNC
5475 || h->needs_plt)
5476 {
5477 /* Prior to adjust_dynamic_symbol, non_got_ref set means that
5478 we might need to generate a copy reloc for this symbol.
5479 After adjust_dynamic_symbol, non_got_ref is only relevant for
5480 non-pic and means that the symbol might have dynamic
5481 relocations. If it is clear then dyn_relocs for this symbol
5482 should be discarded; We either want the symbol to remain
5483 undefined, or we have a local definition of some sort. The
5484 "local definition" for non-function symbols may be due to
5485 creating a local definition in .dynbss, and for function
5486 symbols, defining the symbol on the PLT call stub code. */
5487 bfd_boolean local = (SYMBOL_CALLS_LOCAL (info, h)
5488 || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h));
5489 /* Arrange to discard dyn_relocs if we've decided that a
5490 function symbol is local. It might be possible to discard
5491 dyn_relocs here, but when a symbol has a weakdef they have
5492 been transferred to the weakdef symbol for the benefit of
5493 readonly_dynrelocs. (See ppc_elf_copy_indirect_symbol.)
5494 Not only would we need to handle weakdefs here, but also in
5495 allocate_dynrelocs and relocate_section. The latter is
5496 impossible since the weakdef field has been overwritten by
5497 that time. In relocate_section we need a proxy for
5498 dyn_relocs and non_got_ref is that proxy.
5499 Note that function symbols are not supposed to have weakdefs,
5500 but since symbols may not be correctly typed we handle them
5501 here. */
5502 h->non_got_ref = (h->u.weakdef != NULL
5503 ? h->u.weakdef->non_got_ref
5504 : !local && (((struct ppc_elf_link_hash_entry *) h)
5505 ->dyn_relocs != NULL));
5506
5507 /* Clear procedure linkage table information for any symbol that
5508 won't need a .plt entry. */
5509 struct plt_entry *ent;
5510 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
5511 if (ent->plt.refcount > 0)
5512 break;
5513 if (ent == NULL
5514 || (h->type != STT_GNU_IFUNC && local))
5515 {
5516 /* A PLT entry is not required/allowed when:
5517
5518 1. We are not using ld.so; because then the PLT entry
5519 can't be set up, so we can't use one. In this case,
5520 ppc_elf_adjust_dynamic_symbol won't even be called.
5521
5522 2. GC has rendered the entry unused.
5523
5524 3. We know for certain that a call to this symbol
5525 will go to this object, or will remain undefined. */
5526 h->plt.plist = NULL;
5527 h->needs_plt = 0;
5528 h->pointer_equality_needed = 0;
5529 }
5530 else
5531 {
5532 /* Taking a function's address in a read/write section
5533 doesn't require us to define the function symbol in the
5534 executable on a plt call stub. A dynamic reloc can
5535 be used instead, giving better runtime performance.
5536 (Calls via that function pointer don't need to bounce
5537 through the plt call stub.) Similarly, use a dynamic
5538 reloc for a weak reference when possible, allowing the
5539 resolution of the symbol to be set at load time rather
5540 than link time. */
5541 if ((h->pointer_equality_needed
5542 || (h->non_got_ref
5543 && !h->ref_regular_nonweak
5544 && !UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)))
5545 && !htab->is_vxworks
5546 && !ppc_elf_hash_entry (h)->has_sda_refs
5547 && !readonly_dynrelocs (h))
5548 {
5549 h->pointer_equality_needed = 0;
5550 /* If we haven't seen a branch reloc then we don't need
5551 a plt entry. */
5552 if (!h->needs_plt)
5553 h->plt.plist = NULL;
5554 }
5555 else
5556 /* We are going to be defining the function symbol on the
5557 plt stub, so no dyn_relocs needed when non-pic. */
5558 h->non_got_ref = 0;
5559 }
5560 h->protected_def = 0;
5561 /* Function symbols can't have copy relocs. */
5562 return TRUE;
5563 }
5564 else
5565 h->plt.plist = NULL;
5566
5567 /* If this is a weak symbol, and there is a real definition, the
5568 processor independent code will have arranged for us to see the
5569 real definition first, and we can just use the same value. */
5570 if (h->u.weakdef != NULL)
5571 {
5572 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
5573 || h->u.weakdef->root.type == bfd_link_hash_defweak);
5574 h->root.u.def.section = h->u.weakdef->root.u.def.section;
5575 h->root.u.def.value = h->u.weakdef->root.u.def.value;
5576 if (ELIMINATE_COPY_RELOCS)
5577 h->non_got_ref = h->u.weakdef->non_got_ref;
5578 return TRUE;
5579 }
5580
5581 /* This is a reference to a symbol defined by a dynamic object which
5582 is not a function. */
5583
5584 /* If we are creating a shared library, we must presume that the
5585 only references to the symbol are via the global offset table.
5586 For such cases we need not do anything here; the relocations will
5587 be handled correctly by relocate_section. */
5588 if (bfd_link_pic (info))
5589 {
5590 h->protected_def = 0;
5591 return TRUE;
5592 }
5593
5594 /* If there are no references to this symbol that do not use the
5595 GOT, we don't need to generate a copy reloc. */
5596 if (!h->non_got_ref)
5597 {
5598 h->protected_def = 0;
5599 return TRUE;
5600 }
5601
5602 /* Protected variables do not work with .dynbss. The copy in
5603 .dynbss won't be used by the shared library with the protected
5604 definition for the variable. Editing to PIC, or text relocations
5605 are preferable to an incorrect program. */
5606 if (h->protected_def)
5607 {
5608 if (ELIMINATE_COPY_RELOCS
5609 && ppc_elf_hash_entry (h)->has_addr16_ha
5610 && ppc_elf_hash_entry (h)->has_addr16_lo
5611 && htab->params->pic_fixup == 0
5612 && info->disable_target_specific_optimizations <= 1)
5613 htab->params->pic_fixup = 1;
5614 return TRUE;
5615 }
5616
5617 /* If -z nocopyreloc was given, we won't generate them either. */
5618 if (info->nocopyreloc)
5619 return TRUE;
5620
5621 /* If we didn't find any dynamic relocs in read-only sections, then
5622 we'll be keeping the dynamic relocs and avoiding the copy reloc.
5623 We can't do this if there are any small data relocations. This
5624 doesn't work on VxWorks, where we can not have dynamic
5625 relocations (other than copy and jump slot relocations) in an
5626 executable. */
5627 if (ELIMINATE_COPY_RELOCS
5628 && !ppc_elf_hash_entry (h)->has_sda_refs
5629 && !htab->is_vxworks
5630 && !h->def_regular
5631 && !readonly_dynrelocs (h))
5632 return TRUE;
5633
5634 /* We must allocate the symbol in our .dynbss section, which will
5635 become part of the .bss section of the executable. There will be
5636 an entry for this symbol in the .dynsym section. The dynamic
5637 object will contain position independent code, so all references
5638 from the dynamic object to this symbol will go through the global
5639 offset table. The dynamic linker will use the .dynsym entry to
5640 determine the address it must put in the global offset table, so
5641 both the dynamic object and the regular object will refer to the
5642 same memory location for the variable.
5643
5644 Of course, if the symbol is referenced using SDAREL relocs, we
5645 must instead allocate it in .sbss. */
5646
5647 if (ppc_elf_hash_entry (h)->has_sda_refs)
5648 s = htab->dynsbss;
5649 else if ((h->root.u.def.section->flags & SEC_READONLY) != 0)
5650 s = htab->elf.sdynrelro;
5651 else
5652 s = htab->elf.sdynbss;
5653 BFD_ASSERT (s != NULL);
5654
5655 /* We must generate a R_PPC_COPY reloc to tell the dynamic linker to
5656 copy the initial value out of the dynamic object and into the
5657 runtime process image. We need to remember the offset into the
5658 .rela.bss section we are going to use. */
5659 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
5660 {
5661 asection *srel;
5662
5663 if (ppc_elf_hash_entry (h)->has_sda_refs)
5664 srel = htab->relsbss;
5665 else if ((h->root.u.def.section->flags & SEC_READONLY) != 0)
5666 srel = htab->elf.sreldynrelro;
5667 else
5668 srel = htab->elf.srelbss;
5669 BFD_ASSERT (srel != NULL);
5670 srel->size += sizeof (Elf32_External_Rela);
5671 h->needs_copy = 1;
5672 }
5673
5674 /* We no longer want dyn_relocs. */
5675 h->non_got_ref = 0;
5676 return _bfd_elf_adjust_dynamic_copy (info, h, s);
5677 }
5678 \f
5679 /* Generate a symbol to mark plt call stubs. For non-PIC code the sym is
5680 xxxxxxxx.plt_call32.<callee> where xxxxxxxx is a hex number, usually 0,
5681 specifying the addend on the plt relocation. For -fpic code, the sym
5682 is xxxxxxxx.plt_pic32.<callee>, and for -fPIC
5683 xxxxxxxx.got2.plt_pic32.<callee>. */
5684
5685 static bfd_boolean
5686 add_stub_sym (struct plt_entry *ent,
5687 struct elf_link_hash_entry *h,
5688 struct bfd_link_info *info)
5689 {
5690 struct elf_link_hash_entry *sh;
5691 size_t len1, len2, len3;
5692 char *name;
5693 const char *stub;
5694 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
5695
5696 if (bfd_link_pic (info))
5697 stub = ".plt_pic32.";
5698 else
5699 stub = ".plt_call32.";
5700
5701 len1 = strlen (h->root.root.string);
5702 len2 = strlen (stub);
5703 len3 = 0;
5704 if (ent->sec)
5705 len3 = strlen (ent->sec->name);
5706 name = bfd_malloc (len1 + len2 + len3 + 9);
5707 if (name == NULL)
5708 return FALSE;
5709 sprintf (name, "%08x", (unsigned) ent->addend & 0xffffffff);
5710 if (ent->sec)
5711 memcpy (name + 8, ent->sec->name, len3);
5712 memcpy (name + 8 + len3, stub, len2);
5713 memcpy (name + 8 + len3 + len2, h->root.root.string, len1 + 1);
5714 sh = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
5715 if (sh == NULL)
5716 return FALSE;
5717 if (sh->root.type == bfd_link_hash_new)
5718 {
5719 sh->root.type = bfd_link_hash_defined;
5720 sh->root.u.def.section = htab->glink;
5721 sh->root.u.def.value = ent->glink_offset;
5722 sh->ref_regular = 1;
5723 sh->def_regular = 1;
5724 sh->ref_regular_nonweak = 1;
5725 sh->forced_local = 1;
5726 sh->non_elf = 0;
5727 sh->root.linker_def = 1;
5728 }
5729 return TRUE;
5730 }
5731
5732 /* Allocate NEED contiguous space in .got, and return the offset.
5733 Handles allocation of the got header when crossing 32k. */
5734
5735 static bfd_vma
5736 allocate_got (struct ppc_elf_link_hash_table *htab, unsigned int need)
5737 {
5738 bfd_vma where;
5739 unsigned int max_before_header;
5740
5741 if (htab->plt_type == PLT_VXWORKS)
5742 {
5743 where = htab->elf.sgot->size;
5744 htab->elf.sgot->size += need;
5745 }
5746 else
5747 {
5748 max_before_header = htab->plt_type == PLT_NEW ? 32768 : 32764;
5749 if (need <= htab->got_gap)
5750 {
5751 where = max_before_header - htab->got_gap;
5752 htab->got_gap -= need;
5753 }
5754 else
5755 {
5756 if (htab->elf.sgot->size + need > max_before_header
5757 && htab->elf.sgot->size <= max_before_header)
5758 {
5759 htab->got_gap = max_before_header - htab->elf.sgot->size;
5760 htab->elf.sgot->size = max_before_header + htab->got_header_size;
5761 }
5762 where = htab->elf.sgot->size;
5763 htab->elf.sgot->size += need;
5764 }
5765 }
5766 return where;
5767 }
5768
5769 /* Calculate size of GOT entries for symbol given its TLS_MASK.
5770 TLS_LD is excluded because those go in a special GOT slot. */
5771
5772 static inline unsigned int
5773 got_entries_needed (int tls_mask)
5774 {
5775 unsigned int need;
5776 if ((tls_mask & TLS_TLS) == 0)
5777 need = 4;
5778 else
5779 {
5780 need = 0;
5781 if ((tls_mask & TLS_GD) != 0)
5782 need += 8;
5783 if ((tls_mask & (TLS_TPREL | TLS_TPRELGD)) != 0)
5784 need += 4;
5785 if ((tls_mask & TLS_DTPREL) != 0)
5786 need += 4;
5787 }
5788 return need;
5789 }
5790
5791 /* Calculate size of relocs needed for symbol given its TLS_MASK and
5792 NEEDed GOT entries. KNOWN says a TPREL offset can be calculated at
5793 link time. */
5794
5795 static inline unsigned int
5796 got_relocs_needed (int tls_mask, unsigned int need, bfd_boolean known)
5797 {
5798 /* All the entries we allocated need relocs.
5799 Except IE in executable with a local symbol. We could also omit
5800 the DTPREL reloc on the second word of a GD entry under the same
5801 condition as that for IE, but ld.so needs to differentiate
5802 LD and GD entries. */
5803 if ((tls_mask & (TLS_TPREL | TLS_TPRELGD)) != 0 && known)
5804 need -= 4;
5805 return need * sizeof (Elf32_External_Rela) / 4;
5806 }
5807
5808 /* If H is undefined, make it dynamic if that makes sense. */
5809
5810 static bfd_boolean
5811 ensure_undef_dynamic (struct bfd_link_info *info,
5812 struct elf_link_hash_entry *h)
5813 {
5814 struct elf_link_hash_table *htab = elf_hash_table (info);
5815
5816 if (htab->dynamic_sections_created
5817 && ((info->dynamic_undefined_weak != 0
5818 && h->root.type == bfd_link_hash_undefweak)
5819 || h->root.type == bfd_link_hash_undefined)
5820 && h->dynindx == -1
5821 && !h->forced_local
5822 && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
5823 return bfd_elf_link_record_dynamic_symbol (info, h);
5824 return TRUE;
5825 }
5826
5827 /* Allocate space in associated reloc sections for dynamic relocs. */
5828
5829 static bfd_boolean
5830 allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
5831 {
5832 struct bfd_link_info *info = inf;
5833 struct ppc_elf_link_hash_entry *eh;
5834 struct ppc_elf_link_hash_table *htab;
5835 struct elf_dyn_relocs *p;
5836 bfd_boolean dyn;
5837
5838 if (h->root.type == bfd_link_hash_indirect)
5839 return TRUE;
5840
5841 htab = ppc_elf_hash_table (info);
5842 eh = (struct ppc_elf_link_hash_entry *) h;
5843 if (eh->elf.got.refcount > 0
5844 || (ELIMINATE_COPY_RELOCS
5845 && !eh->elf.def_regular
5846 && eh->elf.protected_def
5847 && eh->has_addr16_ha
5848 && eh->has_addr16_lo
5849 && htab->params->pic_fixup > 0))
5850 {
5851 unsigned int need;
5852
5853 /* Make sure this symbol is output as a dynamic symbol. */
5854 if (!ensure_undef_dynamic (info, &eh->elf))
5855 return FALSE;
5856
5857 need = 0;
5858 if ((eh->tls_mask & TLS_LD) != 0)
5859 {
5860 if (!eh->elf.def_dynamic)
5861 /* We'll just use htab->tlsld_got.offset. This should
5862 always be the case. It's a little odd if we have
5863 a local dynamic reloc against a non-local symbol. */
5864 htab->tlsld_got.refcount += 1;
5865 else
5866 need += 8;
5867 }
5868 need += got_entries_needed (eh->tls_mask);
5869 if (need == 0)
5870 eh->elf.got.offset = (bfd_vma) -1;
5871 else
5872 {
5873 eh->elf.got.offset = allocate_got (htab, need);
5874 if ((bfd_link_pic (info)
5875 || (htab->elf.dynamic_sections_created
5876 && eh->elf.dynindx != -1
5877 && !SYMBOL_REFERENCES_LOCAL (info, &eh->elf)))
5878 && !UNDEFWEAK_NO_DYNAMIC_RELOC (info, &eh->elf))
5879 {
5880 asection *rsec;
5881 bfd_boolean tprel_known = (bfd_link_executable (info)
5882 && SYMBOL_REFERENCES_LOCAL (info,
5883 &eh->elf));
5884
5885 need = got_relocs_needed (eh->tls_mask, need, tprel_known);
5886 if ((eh->tls_mask & TLS_LD) != 0 && eh->elf.def_dynamic)
5887 need -= sizeof (Elf32_External_Rela);
5888 rsec = htab->elf.srelgot;
5889 if (eh->elf.type == STT_GNU_IFUNC)
5890 rsec = htab->elf.irelplt;
5891 rsec->size += need;
5892 }
5893 }
5894 }
5895 else
5896 eh->elf.got.offset = (bfd_vma) -1;
5897
5898 /* If no dynamic sections we can't have dynamic relocs, except for
5899 IFUNCs which are handled even in static executables. */
5900 if (!htab->elf.dynamic_sections_created
5901 && h->type != STT_GNU_IFUNC)
5902 eh->dyn_relocs = NULL;
5903
5904 /* Discard relocs on undefined symbols that must be local. */
5905 else if (h->root.type == bfd_link_hash_undefined
5906 && ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
5907 eh->dyn_relocs = NULL;
5908
5909 /* Also discard relocs on undefined weak syms with non-default
5910 visibility, or when dynamic_undefined_weak says so. */
5911 else if (UNDEFWEAK_NO_DYNAMIC_RELOC (info, h))
5912 eh->dyn_relocs = NULL;
5913
5914 if (eh->dyn_relocs == NULL)
5915 h->non_got_ref = 0;
5916
5917 /* In the shared -Bsymbolic case, discard space allocated for
5918 dynamic pc-relative relocs against symbols which turn out to be
5919 defined in regular objects. For the normal shared case, discard
5920 space for relocs that have become local due to symbol visibility
5921 changes. */
5922 else if (bfd_link_pic (info))
5923 {
5924 /* Relocs that use pc_count are those that appear on a call insn,
5925 or certain REL relocs (see must_be_dyn_reloc) that can be
5926 generated via assembly. We want calls to protected symbols to
5927 resolve directly to the function rather than going via the plt.
5928 If people want function pointer comparisons to work as expected
5929 then they should avoid writing weird assembly. */
5930 if (SYMBOL_CALLS_LOCAL (info, h))
5931 {
5932 struct elf_dyn_relocs **pp;
5933
5934 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
5935 {
5936 p->count -= p->pc_count;
5937 p->pc_count = 0;
5938 if (p->count == 0)
5939 *pp = p->next;
5940 else
5941 pp = &p->next;
5942 }
5943 }
5944
5945 if (htab->is_vxworks)
5946 {
5947 struct elf_dyn_relocs **pp;
5948
5949 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
5950 {
5951 if (strcmp (p->sec->output_section->name, ".tls_vars") == 0)
5952 *pp = p->next;
5953 else
5954 pp = &p->next;
5955 }
5956 }
5957
5958 if (eh->dyn_relocs != NULL)
5959 {
5960 /* Make sure this symbol is output as a dynamic symbol. */
5961 if (!ensure_undef_dynamic (info, h))
5962 return FALSE;
5963 }
5964 }
5965 else if (ELIMINATE_COPY_RELOCS)
5966 {
5967 /* For the non-pic case, discard space for relocs against
5968 symbols which turn out to need copy relocs or are not
5969 dynamic. */
5970 if (h->dynamic_adjusted
5971 && h->non_got_ref
5972 && !h->def_regular
5973 && !ELF_COMMON_DEF_P (h)
5974 && !(h->protected_def
5975 && eh->has_addr16_ha
5976 && eh->has_addr16_lo
5977 && htab->params->pic_fixup > 0))
5978 {
5979 /* Make sure this symbol is output as a dynamic symbol. */
5980 if (!ensure_undef_dynamic (info, h))
5981 return FALSE;
5982
5983 if (h->dynindx == -1)
5984 {
5985 h->non_got_ref = 0;
5986 eh->dyn_relocs = NULL;
5987 }
5988 }
5989 else
5990 {
5991 h->non_got_ref = 0;
5992 eh->dyn_relocs = NULL;
5993 }
5994 }
5995
5996 /* Allocate space. */
5997 for (p = eh->dyn_relocs; p != NULL; p = p->next)
5998 {
5999 asection *sreloc = elf_section_data (p->sec)->sreloc;
6000 if (eh->elf.type == STT_GNU_IFUNC)
6001 sreloc = htab->elf.irelplt;
6002 sreloc->size += p->count * sizeof (Elf32_External_Rela);
6003 }
6004
6005 /* Handle PLT relocs. Done last, after dynindx has settled. */
6006 dyn = htab->elf.dynamic_sections_created && h->dynindx != -1;
6007 if (dyn || h->type == STT_GNU_IFUNC)
6008 {
6009 struct plt_entry *ent;
6010 bfd_boolean doneone = FALSE;
6011 bfd_vma plt_offset = 0, glink_offset = 0;
6012
6013 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
6014 if (ent->plt.refcount > 0)
6015 {
6016 asection *s = htab->elf.splt;
6017
6018 if (!dyn)
6019 s = htab->elf.iplt;
6020
6021 if (htab->plt_type == PLT_NEW || !dyn)
6022 {
6023 if (!doneone)
6024 {
6025 plt_offset = s->size;
6026 s->size += 4;
6027 }
6028 ent->plt.offset = plt_offset;
6029
6030 s = htab->glink;
6031 if (!doneone || bfd_link_pic (info))
6032 {
6033 glink_offset = s->size;
6034 s->size += GLINK_ENTRY_SIZE;
6035 if (h == htab->tls_get_addr
6036 && !htab->params->no_tls_get_addr_opt)
6037 s->size += TLS_GET_ADDR_GLINK_SIZE - GLINK_ENTRY_SIZE;
6038 }
6039 if (!doneone
6040 && !bfd_link_pic (info)
6041 && h->def_dynamic
6042 && !h->def_regular)
6043 {
6044 h->root.u.def.section = s;
6045 h->root.u.def.value = glink_offset;
6046 }
6047 ent->glink_offset = glink_offset;
6048
6049 if (htab->params->emit_stub_syms
6050 && !add_stub_sym (ent, h, info))
6051 return FALSE;
6052 }
6053 else
6054 {
6055 if (!doneone)
6056 {
6057 /* If this is the first .plt entry, make room
6058 for the special first entry. */
6059 if (s->size == 0)
6060 s->size += htab->plt_initial_entry_size;
6061
6062 /* The PowerPC PLT is actually composed of two
6063 parts, the first part is 2 words (for a load
6064 and a jump), and then there is a remaining
6065 word available at the end. */
6066 plt_offset = (htab->plt_initial_entry_size
6067 + (htab->plt_slot_size
6068 * ((s->size
6069 - htab->plt_initial_entry_size)
6070 / htab->plt_entry_size)));
6071
6072 /* If this symbol is not defined in a regular
6073 file, and we are not generating a shared
6074 library, then set the symbol to this location
6075 in the .plt. This is to avoid text
6076 relocations, and is required to make
6077 function pointers compare as equal between
6078 the normal executable and the shared library. */
6079 if (! bfd_link_pic (info)
6080 && h->def_dynamic
6081 && !h->def_regular)
6082 {
6083 h->root.u.def.section = s;
6084 h->root.u.def.value = plt_offset;
6085 }
6086
6087 /* Make room for this entry. */
6088 s->size += htab->plt_entry_size;
6089 /* After the 8192nd entry, room for two entries
6090 is allocated. */
6091 if (htab->plt_type == PLT_OLD
6092 && (s->size - htab->plt_initial_entry_size)
6093 / htab->plt_entry_size
6094 > PLT_NUM_SINGLE_ENTRIES)
6095 s->size += htab->plt_entry_size;
6096 }
6097 ent->plt.offset = plt_offset;
6098 }
6099
6100 /* We also need to make an entry in the .rela.plt section. */
6101 if (!doneone)
6102 {
6103 if (!dyn)
6104 htab->elf.irelplt->size += sizeof (Elf32_External_Rela);
6105 else
6106 {
6107 htab->elf.srelplt->size += sizeof (Elf32_External_Rela);
6108
6109 if (htab->plt_type == PLT_VXWORKS)
6110 {
6111 /* Allocate space for the unloaded relocations. */
6112 if (!bfd_link_pic (info)
6113 && htab->elf.dynamic_sections_created)
6114 {
6115 if (ent->plt.offset
6116 == (bfd_vma) htab->plt_initial_entry_size)
6117 {
6118 htab->srelplt2->size
6119 += (sizeof (Elf32_External_Rela)
6120 * VXWORKS_PLTRESOLVE_RELOCS);
6121 }
6122
6123 htab->srelplt2->size
6124 += (sizeof (Elf32_External_Rela)
6125 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS);
6126 }
6127
6128 /* Every PLT entry has an associated GOT entry in
6129 .got.plt. */
6130 htab->elf.sgotplt->size += 4;
6131 }
6132 }
6133 doneone = TRUE;
6134 }
6135 }
6136 else
6137 ent->plt.offset = (bfd_vma) -1;
6138
6139 if (!doneone)
6140 {
6141 h->plt.plist = NULL;
6142 h->needs_plt = 0;
6143 }
6144 }
6145 else
6146 {
6147 h->plt.plist = NULL;
6148 h->needs_plt = 0;
6149 }
6150
6151 return TRUE;
6152 }
6153
6154 /* Set DF_TEXTREL if we find any dynamic relocs that apply to
6155 read-only sections. */
6156
6157 static bfd_boolean
6158 maybe_set_textrel (struct elf_link_hash_entry *h, void *info_p)
6159 {
6160 asection *sec;
6161
6162 if (h->root.type == bfd_link_hash_indirect)
6163 return TRUE;
6164
6165 sec = readonly_dynrelocs (h);
6166 if (sec != NULL)
6167 {
6168 struct bfd_link_info *info = (struct bfd_link_info *) info_p;
6169
6170 info->flags |= DF_TEXTREL;
6171 info->callbacks->minfo
6172 (_("%B: dynamic relocation in read-only section `%A'\n"),
6173 sec->owner, sec);
6174
6175 /* Not an error, just cut short the traversal. */
6176 return FALSE;
6177 }
6178 return TRUE;
6179 }
6180
6181 static const unsigned char glink_eh_frame_cie[] =
6182 {
6183 0, 0, 0, 16, /* length. */
6184 0, 0, 0, 0, /* id. */
6185 1, /* CIE version. */
6186 'z', 'R', 0, /* Augmentation string. */
6187 4, /* Code alignment. */
6188 0x7c, /* Data alignment. */
6189 65, /* RA reg. */
6190 1, /* Augmentation size. */
6191 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding. */
6192 DW_CFA_def_cfa, 1, 0 /* def_cfa: r1 offset 0. */
6193 };
6194
6195 /* Set the sizes of the dynamic sections. */
6196
6197 static bfd_boolean
6198 ppc_elf_size_dynamic_sections (bfd *output_bfd,
6199 struct bfd_link_info *info)
6200 {
6201 struct ppc_elf_link_hash_table *htab;
6202 asection *s;
6203 bfd_boolean relocs;
6204 bfd *ibfd;
6205
6206 #ifdef DEBUG
6207 fprintf (stderr, "ppc_elf_size_dynamic_sections called\n");
6208 #endif
6209
6210 htab = ppc_elf_hash_table (info);
6211 BFD_ASSERT (htab->elf.dynobj != NULL);
6212
6213 if (elf_hash_table (info)->dynamic_sections_created)
6214 {
6215 /* Set the contents of the .interp section to the interpreter. */
6216 if (bfd_link_executable (info) && !info->nointerp)
6217 {
6218 s = bfd_get_linker_section (htab->elf.dynobj, ".interp");
6219 BFD_ASSERT (s != NULL);
6220 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
6221 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
6222 }
6223 }
6224
6225 if (htab->plt_type == PLT_OLD)
6226 htab->got_header_size = 16;
6227 else if (htab->plt_type == PLT_NEW)
6228 htab->got_header_size = 12;
6229
6230 /* Set up .got offsets for local syms, and space for local dynamic
6231 relocs. */
6232 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
6233 {
6234 bfd_signed_vma *local_got;
6235 bfd_signed_vma *end_local_got;
6236 struct plt_entry **local_plt;
6237 struct plt_entry **end_local_plt;
6238 char *lgot_masks;
6239 bfd_size_type locsymcount;
6240 Elf_Internal_Shdr *symtab_hdr;
6241
6242 if (!is_ppc_elf (ibfd))
6243 continue;
6244
6245 for (s = ibfd->sections; s != NULL; s = s->next)
6246 {
6247 struct ppc_dyn_relocs *p;
6248
6249 for (p = ((struct ppc_dyn_relocs *)
6250 elf_section_data (s)->local_dynrel);
6251 p != NULL;
6252 p = p->next)
6253 {
6254 if (!bfd_is_abs_section (p->sec)
6255 && bfd_is_abs_section (p->sec->output_section))
6256 {
6257 /* Input section has been discarded, either because
6258 it is a copy of a linkonce section or due to
6259 linker script /DISCARD/, so we'll be discarding
6260 the relocs too. */
6261 }
6262 else if (htab->is_vxworks
6263 && strcmp (p->sec->output_section->name,
6264 ".tls_vars") == 0)
6265 {
6266 /* Relocations in vxworks .tls_vars sections are
6267 handled specially by the loader. */
6268 }
6269 else if (p->count != 0)
6270 {
6271 asection *sreloc = elf_section_data (p->sec)->sreloc;
6272 if (p->ifunc)
6273 sreloc = htab->elf.irelplt;
6274 sreloc->size += p->count * sizeof (Elf32_External_Rela);
6275 if ((p->sec->output_section->flags
6276 & (SEC_READONLY | SEC_ALLOC))
6277 == (SEC_READONLY | SEC_ALLOC))
6278 {
6279 info->flags |= DF_TEXTREL;
6280 info->callbacks->minfo (_("%B: dynamic relocation in read-only section `%A'\n"),
6281 p->sec->owner, p->sec);
6282 }
6283 }
6284 }
6285 }
6286
6287 local_got = elf_local_got_refcounts (ibfd);
6288 if (!local_got)
6289 continue;
6290
6291 symtab_hdr = &elf_symtab_hdr (ibfd);
6292 locsymcount = symtab_hdr->sh_info;
6293 end_local_got = local_got + locsymcount;
6294 local_plt = (struct plt_entry **) end_local_got;
6295 end_local_plt = local_plt + locsymcount;
6296 lgot_masks = (char *) end_local_plt;
6297
6298 for (; local_got < end_local_got; ++local_got, ++lgot_masks)
6299 if (*local_got > 0)
6300 {
6301 unsigned int need;
6302 if ((*lgot_masks & TLS_LD) != 0)
6303 htab->tlsld_got.refcount += 1;
6304 need = got_entries_needed (*lgot_masks);
6305 if (need == 0)
6306 *local_got = (bfd_vma) -1;
6307 else
6308 {
6309 *local_got = allocate_got (htab, need);
6310 if (bfd_link_pic (info))
6311 {
6312 asection *srel;
6313 bfd_boolean tprel_known = bfd_link_executable (info);
6314
6315 need = got_relocs_needed (*lgot_masks, need, tprel_known);
6316 srel = htab->elf.srelgot;
6317 if ((*lgot_masks & PLT_IFUNC) != 0)
6318 srel = htab->elf.irelplt;
6319 srel->size += need;
6320 }
6321 }
6322 }
6323 else
6324 *local_got = (bfd_vma) -1;
6325
6326 if (htab->is_vxworks)
6327 continue;
6328
6329 /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */
6330 for (; local_plt < end_local_plt; ++local_plt)
6331 {
6332 struct plt_entry *ent;
6333 bfd_boolean doneone = FALSE;
6334 bfd_vma plt_offset = 0, glink_offset = 0;
6335
6336 for (ent = *local_plt; ent != NULL; ent = ent->next)
6337 if (ent->plt.refcount > 0)
6338 {
6339 s = htab->elf.iplt;
6340
6341 if (!doneone)
6342 {
6343 plt_offset = s->size;
6344 s->size += 4;
6345 }
6346 ent->plt.offset = plt_offset;
6347
6348 s = htab->glink;
6349 if (!doneone || bfd_link_pic (info))
6350 {
6351 glink_offset = s->size;
6352 s->size += GLINK_ENTRY_SIZE;
6353 }
6354 ent->glink_offset = glink_offset;
6355
6356 if (!doneone)
6357 {
6358 htab->elf.irelplt->size += sizeof (Elf32_External_Rela);
6359 doneone = TRUE;
6360 }
6361 }
6362 else
6363 ent->plt.offset = (bfd_vma) -1;
6364 }
6365 }
6366
6367 /* Allocate space for global sym dynamic relocs. */
6368 elf_link_hash_traverse (elf_hash_table (info), allocate_dynrelocs, info);
6369
6370 if (htab->tlsld_got.refcount > 0)
6371 {
6372 htab->tlsld_got.offset = allocate_got (htab, 8);
6373 if (bfd_link_pic (info))
6374 htab->elf.srelgot->size += sizeof (Elf32_External_Rela);
6375 }
6376 else
6377 htab->tlsld_got.offset = (bfd_vma) -1;
6378
6379 if (htab->elf.sgot != NULL && htab->plt_type != PLT_VXWORKS)
6380 {
6381 unsigned int g_o_t = 32768;
6382
6383 /* If we haven't allocated the header, do so now. When we get here,
6384 for old plt/got the got size will be 0 to 32764 (not allocated),
6385 or 32780 to 65536 (header allocated). For new plt/got, the
6386 corresponding ranges are 0 to 32768 and 32780 to 65536. */
6387 if (htab->elf.sgot->size <= 32768)
6388 {
6389 g_o_t = htab->elf.sgot->size;
6390 if (htab->plt_type == PLT_OLD)
6391 g_o_t += 4;
6392 htab->elf.sgot->size += htab->got_header_size;
6393 }
6394
6395 htab->elf.hgot->root.u.def.value = g_o_t;
6396 }
6397 if (bfd_link_pic (info))
6398 {
6399 struct elf_link_hash_entry *sda = htab->sdata[0].sym;
6400
6401 sda->root.u.def.section = htab->elf.hgot->root.u.def.section;
6402 sda->root.u.def.value = htab->elf.hgot->root.u.def.value;
6403 }
6404 if (info->emitrelocations)
6405 {
6406 struct elf_link_hash_entry *sda = htab->sdata[0].sym;
6407
6408 if (sda != NULL && sda->ref_regular)
6409 sda->root.u.def.section->flags |= SEC_KEEP;
6410 sda = htab->sdata[1].sym;
6411 if (sda != NULL && sda->ref_regular)
6412 sda->root.u.def.section->flags |= SEC_KEEP;
6413 }
6414
6415 if (htab->glink != NULL
6416 && htab->glink->size != 0
6417 && htab->elf.dynamic_sections_created)
6418 {
6419 htab->glink_pltresolve = htab->glink->size;
6420 /* Space for the branch table. ??? We don't need entries for
6421 non-dynamic symbols in this table. This case can arise with
6422 static ifuncs or forced local ifuncs. */
6423 htab->glink->size += htab->glink->size / (GLINK_ENTRY_SIZE / 4) - 4;
6424 /* Pad out to align the start of PLTresolve. */
6425 htab->glink->size += -htab->glink->size & (htab->params->ppc476_workaround
6426 ? 63 : 15);
6427 htab->glink->size += GLINK_PLTRESOLVE;
6428
6429 if (htab->params->emit_stub_syms)
6430 {
6431 struct elf_link_hash_entry *sh;
6432 sh = elf_link_hash_lookup (&htab->elf, "__glink",
6433 TRUE, FALSE, FALSE);
6434 if (sh == NULL)
6435 return FALSE;
6436 if (sh->root.type == bfd_link_hash_new)
6437 {
6438 sh->root.type = bfd_link_hash_defined;
6439 sh->root.u.def.section = htab->glink;
6440 sh->root.u.def.value = htab->glink_pltresolve;
6441 sh->ref_regular = 1;
6442 sh->def_regular = 1;
6443 sh->ref_regular_nonweak = 1;
6444 sh->forced_local = 1;
6445 sh->non_elf = 0;
6446 sh->root.linker_def = 1;
6447 }
6448 sh = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve",
6449 TRUE, FALSE, FALSE);
6450 if (sh == NULL)
6451 return FALSE;
6452 if (sh->root.type == bfd_link_hash_new)
6453 {
6454 sh->root.type = bfd_link_hash_defined;
6455 sh->root.u.def.section = htab->glink;
6456 sh->root.u.def.value = htab->glink->size - GLINK_PLTRESOLVE;
6457 sh->ref_regular = 1;
6458 sh->def_regular = 1;
6459 sh->ref_regular_nonweak = 1;
6460 sh->forced_local = 1;
6461 sh->non_elf = 0;
6462 sh->root.linker_def = 1;
6463 }
6464 }
6465 }
6466
6467 if (htab->glink != NULL
6468 && htab->glink->size != 0
6469 && htab->glink_eh_frame != NULL
6470 && !bfd_is_abs_section (htab->glink_eh_frame->output_section)
6471 && _bfd_elf_eh_frame_present (info))
6472 {
6473 s = htab->glink_eh_frame;
6474 s->size = sizeof (glink_eh_frame_cie) + 20;
6475 if (bfd_link_pic (info))
6476 {
6477 s->size += 4;
6478 if (htab->glink->size - GLINK_PLTRESOLVE + 8 >= 256)
6479 s->size += 4;
6480 }
6481 }
6482
6483 /* We've now determined the sizes of the various dynamic sections.
6484 Allocate memory for them. */
6485 relocs = FALSE;
6486 for (s = htab->elf.dynobj->sections; s != NULL; s = s->next)
6487 {
6488 bfd_boolean strip_section = TRUE;
6489
6490 if ((s->flags & SEC_LINKER_CREATED) == 0)
6491 continue;
6492
6493 if (s == htab->elf.splt
6494 || s == htab->elf.sgot)
6495 {
6496 /* We'd like to strip these sections if they aren't needed, but if
6497 we've exported dynamic symbols from them we must leave them.
6498 It's too late to tell BFD to get rid of the symbols. */
6499 if (htab->elf.hplt != NULL)
6500 strip_section = FALSE;
6501 /* Strip this section if we don't need it; see the
6502 comment below. */
6503 }
6504 else if (s == htab->elf.iplt
6505 || s == htab->glink
6506 || s == htab->glink_eh_frame
6507 || s == htab->elf.sgotplt
6508 || s == htab->sbss
6509 || s == htab->elf.sdynbss
6510 || s == htab->elf.sdynrelro
6511 || s == htab->dynsbss)
6512 {
6513 /* Strip these too. */
6514 }
6515 else if (s == htab->sdata[0].section
6516 || s == htab->sdata[1].section)
6517 {
6518 strip_section = (s->flags & SEC_KEEP) == 0;
6519 }
6520 else if (CONST_STRNEQ (bfd_get_section_name (htab->elf.dynobj, s),
6521 ".rela"))
6522 {
6523 if (s->size != 0)
6524 {
6525 /* Remember whether there are any relocation sections. */
6526 relocs = TRUE;
6527
6528 /* We use the reloc_count field as a counter if we need
6529 to copy relocs into the output file. */
6530 s->reloc_count = 0;
6531 }
6532 }
6533 else
6534 {
6535 /* It's not one of our sections, so don't allocate space. */
6536 continue;
6537 }
6538
6539 if (s->size == 0 && strip_section)
6540 {
6541 /* If we don't need this section, strip it from the
6542 output file. This is mostly to handle .rela.bss and
6543 .rela.plt. We must create both sections in
6544 create_dynamic_sections, because they must be created
6545 before the linker maps input sections to output
6546 sections. The linker does that before
6547 adjust_dynamic_symbol is called, and it is that
6548 function which decides whether anything needs to go
6549 into these sections. */
6550 s->flags |= SEC_EXCLUDE;
6551 continue;
6552 }
6553
6554 if ((s->flags & SEC_HAS_CONTENTS) == 0)
6555 continue;
6556
6557 /* Allocate memory for the section contents. */
6558 s->contents = bfd_zalloc (htab->elf.dynobj, s->size);
6559 if (s->contents == NULL)
6560 return FALSE;
6561 }
6562
6563 if (htab->elf.dynamic_sections_created)
6564 {
6565 /* Add some entries to the .dynamic section. We fill in the
6566 values later, in ppc_elf_finish_dynamic_sections, but we
6567 must add the entries now so that we get the correct size for
6568 the .dynamic section. The DT_DEBUG entry is filled in by the
6569 dynamic linker and used by the debugger. */
6570 #define add_dynamic_entry(TAG, VAL) \
6571 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
6572
6573 if (bfd_link_executable (info))
6574 {
6575 if (!add_dynamic_entry (DT_DEBUG, 0))
6576 return FALSE;
6577 }
6578
6579 if (htab->elf.splt != NULL && htab->elf.splt->size != 0)
6580 {
6581 if (!add_dynamic_entry (DT_PLTGOT, 0)
6582 || !add_dynamic_entry (DT_PLTRELSZ, 0)
6583 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
6584 || !add_dynamic_entry (DT_JMPREL, 0))
6585 return FALSE;
6586 }
6587
6588 if (htab->plt_type == PLT_NEW
6589 && htab->glink != NULL
6590 && htab->glink->size != 0)
6591 {
6592 if (!add_dynamic_entry (DT_PPC_GOT, 0))
6593 return FALSE;
6594 if (!htab->params->no_tls_get_addr_opt
6595 && htab->tls_get_addr != NULL
6596 && htab->tls_get_addr->plt.plist != NULL
6597 && !add_dynamic_entry (DT_PPC_OPT, PPC_OPT_TLS))
6598 return FALSE;
6599 }
6600
6601 if (relocs)
6602 {
6603 if (!add_dynamic_entry (DT_RELA, 0)
6604 || !add_dynamic_entry (DT_RELASZ, 0)
6605 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
6606 return FALSE;
6607 }
6608
6609 /* If any dynamic relocs apply to a read-only section, then we
6610 need a DT_TEXTREL entry. */
6611 if ((info->flags & DF_TEXTREL) == 0)
6612 elf_link_hash_traverse (elf_hash_table (info), maybe_set_textrel,
6613 info);
6614
6615 if ((info->flags & DF_TEXTREL) != 0)
6616 {
6617 if (!add_dynamic_entry (DT_TEXTREL, 0))
6618 return FALSE;
6619 }
6620 if (htab->is_vxworks
6621 && !elf_vxworks_add_dynamic_entries (output_bfd, info))
6622 return FALSE;
6623 }
6624 #undef add_dynamic_entry
6625
6626 if (htab->glink_eh_frame != NULL
6627 && htab->glink_eh_frame->contents != NULL)
6628 {
6629 unsigned char *p = htab->glink_eh_frame->contents;
6630 bfd_vma val;
6631
6632 memcpy (p, glink_eh_frame_cie, sizeof (glink_eh_frame_cie));
6633 /* CIE length (rewrite in case little-endian). */
6634 bfd_put_32 (htab->elf.dynobj, sizeof (glink_eh_frame_cie) - 4, p);
6635 p += sizeof (glink_eh_frame_cie);
6636 /* FDE length. */
6637 val = htab->glink_eh_frame->size - 4 - sizeof (glink_eh_frame_cie);
6638 bfd_put_32 (htab->elf.dynobj, val, p);
6639 p += 4;
6640 /* CIE pointer. */
6641 val = p - htab->glink_eh_frame->contents;
6642 bfd_put_32 (htab->elf.dynobj, val, p);
6643 p += 4;
6644 /* Offset to .glink. Set later. */
6645 p += 4;
6646 /* .glink size. */
6647 bfd_put_32 (htab->elf.dynobj, htab->glink->size, p);
6648 p += 4;
6649 /* Augmentation. */
6650 p += 1;
6651
6652 if (bfd_link_pic (info)
6653 && htab->elf.dynamic_sections_created)
6654 {
6655 bfd_vma adv = (htab->glink->size - GLINK_PLTRESOLVE + 8) >> 2;
6656 if (adv < 64)
6657 *p++ = DW_CFA_advance_loc + adv;
6658 else if (adv < 256)
6659 {
6660 *p++ = DW_CFA_advance_loc1;
6661 *p++ = adv;
6662 }
6663 else if (adv < 65536)
6664 {
6665 *p++ = DW_CFA_advance_loc2;
6666 bfd_put_16 (htab->elf.dynobj, adv, p);
6667 p += 2;
6668 }
6669 else
6670 {
6671 *p++ = DW_CFA_advance_loc4;
6672 bfd_put_32 (htab->elf.dynobj, adv, p);
6673 p += 4;
6674 }
6675 *p++ = DW_CFA_register;
6676 *p++ = 65;
6677 p++;
6678 *p++ = DW_CFA_advance_loc + 4;
6679 *p++ = DW_CFA_restore_extended;
6680 *p++ = 65;
6681 }
6682 BFD_ASSERT ((bfd_vma) ((p + 3 - htab->glink_eh_frame->contents) & -4)
6683 == htab->glink_eh_frame->size);
6684 }
6685
6686 return TRUE;
6687 }
6688
6689 /* Arrange to have _SDA_BASE_ or _SDA2_BASE_ stripped from the output
6690 if it looks like nothing is using them. */
6691
6692 static void
6693 maybe_strip_sdasym (bfd *output_bfd, elf_linker_section_t *lsect)
6694 {
6695 struct elf_link_hash_entry *sda = lsect->sym;
6696
6697 if (sda != NULL && !sda->ref_regular && sda->dynindx == -1)
6698 {
6699 asection *s;
6700
6701 s = bfd_get_section_by_name (output_bfd, lsect->name);
6702 if (s == NULL || bfd_section_removed_from_list (output_bfd, s))
6703 {
6704 s = bfd_get_section_by_name (output_bfd, lsect->bss_name);
6705 if (s == NULL || bfd_section_removed_from_list (output_bfd, s))
6706 {
6707 sda->def_regular = 0;
6708 /* This is somewhat magic. See elf_link_output_extsym. */
6709 sda->ref_dynamic = 1;
6710 sda->forced_local = 0;
6711 }
6712 }
6713 }
6714 }
6715
6716 void
6717 ppc_elf_maybe_strip_sdata_syms (struct bfd_link_info *info)
6718 {
6719 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
6720
6721 if (htab != NULL)
6722 {
6723 maybe_strip_sdasym (info->output_bfd, &htab->sdata[0]);
6724 maybe_strip_sdasym (info->output_bfd, &htab->sdata[1]);
6725 }
6726 }
6727
6728
6729 /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
6730
6731 static bfd_boolean
6732 ppc_elf_hash_symbol (struct elf_link_hash_entry *h)
6733 {
6734 if (h->plt.plist != NULL
6735 && !h->def_regular
6736 && (!h->pointer_equality_needed
6737 || !h->ref_regular_nonweak))
6738 return FALSE;
6739
6740 return _bfd_elf_hash_symbol (h);
6741 }
6742 \f
6743 #define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0]))
6744
6745 /* Relaxation trampolines. r12 is available for clobbering (r11, is
6746 used for some functions that are allowed to break the ABI). */
6747 static const int shared_stub_entry[] =
6748 {
6749 0x7c0802a6, /* mflr 0 */
6750 0x429f0005, /* bcl 20, 31, .Lxxx */
6751 0x7d8802a6, /* mflr 12 */
6752 0x3d8c0000, /* addis 12, 12, (xxx-.Lxxx)@ha */
6753 0x398c0000, /* addi 12, 12, (xxx-.Lxxx)@l */
6754 0x7c0803a6, /* mtlr 0 */
6755 0x7d8903a6, /* mtctr 12 */
6756 0x4e800420, /* bctr */
6757 };
6758
6759 static const int stub_entry[] =
6760 {
6761 0x3d800000, /* lis 12,xxx@ha */
6762 0x398c0000, /* addi 12,12,xxx@l */
6763 0x7d8903a6, /* mtctr 12 */
6764 0x4e800420, /* bctr */
6765 };
6766
6767 struct ppc_elf_relax_info
6768 {
6769 unsigned int workaround_size;
6770 unsigned int picfixup_size;
6771 };
6772
6773 /* This function implements long branch trampolines, and the ppc476
6774 icache bug workaround. Any section needing trampolines or patch
6775 space for the workaround has its size extended so that we can
6776 add trampolines at the end of the section. */
6777
6778 static bfd_boolean
6779 ppc_elf_relax_section (bfd *abfd,
6780 asection *isec,
6781 struct bfd_link_info *link_info,
6782 bfd_boolean *again)
6783 {
6784 struct one_branch_fixup
6785 {
6786 struct one_branch_fixup *next;
6787 asection *tsec;
6788 /* Final link, can use the symbol offset. For a
6789 relocatable link we use the symbol's index. */
6790 bfd_vma toff;
6791 bfd_vma trampoff;
6792 };
6793
6794 Elf_Internal_Shdr *symtab_hdr;
6795 bfd_byte *contents = NULL;
6796 Elf_Internal_Sym *isymbuf = NULL;
6797 Elf_Internal_Rela *internal_relocs = NULL;
6798 Elf_Internal_Rela *irel, *irelend = NULL;
6799 struct one_branch_fixup *branch_fixups = NULL;
6800 struct ppc_elf_relax_info *relax_info = NULL;
6801 unsigned changes = 0;
6802 bfd_boolean workaround_change;
6803 struct ppc_elf_link_hash_table *htab;
6804 bfd_size_type trampbase, trampoff, newsize, picfixup_size;
6805 asection *got2;
6806 bfd_boolean maybe_pasted;
6807
6808 *again = FALSE;
6809
6810 /* No need to do anything with non-alloc or non-code sections. */
6811 if ((isec->flags & SEC_ALLOC) == 0
6812 || (isec->flags & SEC_CODE) == 0
6813 || (isec->flags & SEC_LINKER_CREATED) != 0
6814 || isec->size < 4)
6815 return TRUE;
6816
6817 /* We cannot represent the required PIC relocs in the output, so don't
6818 do anything. The linker doesn't support mixing -shared and -r
6819 anyway. */
6820 if (bfd_link_relocatable (link_info) && bfd_link_pic (link_info))
6821 return TRUE;
6822
6823 htab = ppc_elf_hash_table (link_info);
6824 if (htab == NULL)
6825 return TRUE;
6826
6827 isec->size = (isec->size + 3) & -4;
6828 if (isec->rawsize == 0)
6829 isec->rawsize = isec->size;
6830 trampbase = isec->size;
6831
6832 BFD_ASSERT (isec->sec_info_type == SEC_INFO_TYPE_NONE
6833 || isec->sec_info_type == SEC_INFO_TYPE_TARGET);
6834 isec->sec_info_type = SEC_INFO_TYPE_TARGET;
6835
6836 if (htab->params->ppc476_workaround
6837 || htab->params->pic_fixup > 0)
6838 {
6839 if (elf_section_data (isec)->sec_info == NULL)
6840 {
6841 elf_section_data (isec)->sec_info
6842 = bfd_zalloc (abfd, sizeof (struct ppc_elf_relax_info));
6843 if (elf_section_data (isec)->sec_info == NULL)
6844 return FALSE;
6845 }
6846 relax_info = elf_section_data (isec)->sec_info;
6847 trampbase -= relax_info->workaround_size;
6848 }
6849
6850 maybe_pasted = (strcmp (isec->output_section->name, ".init") == 0
6851 || strcmp (isec->output_section->name, ".fini") == 0);
6852 /* Space for a branch around any trampolines. */
6853 trampoff = trampbase;
6854 if (maybe_pasted && trampbase == isec->rawsize)
6855 trampoff += 4;
6856
6857 symtab_hdr = &elf_symtab_hdr (abfd);
6858 picfixup_size = 0;
6859 if (htab->params->branch_trampolines
6860 || htab->params->pic_fixup > 0)
6861 {
6862 /* Get a copy of the native relocations. */
6863 if (isec->reloc_count != 0)
6864 {
6865 internal_relocs = _bfd_elf_link_read_relocs (abfd, isec, NULL, NULL,
6866 link_info->keep_memory);
6867 if (internal_relocs == NULL)
6868 goto error_return;
6869 }
6870
6871 got2 = bfd_get_section_by_name (abfd, ".got2");
6872
6873 irelend = internal_relocs + isec->reloc_count;
6874 for (irel = internal_relocs; irel < irelend; irel++)
6875 {
6876 unsigned long r_type = ELF32_R_TYPE (irel->r_info);
6877 bfd_vma toff, roff;
6878 asection *tsec;
6879 struct one_branch_fixup *f;
6880 size_t insn_offset = 0;
6881 bfd_vma max_branch_offset = 0, val;
6882 bfd_byte *hit_addr;
6883 unsigned long t0;
6884 struct elf_link_hash_entry *h;
6885 struct plt_entry **plist;
6886 unsigned char sym_type;
6887
6888 switch (r_type)
6889 {
6890 case R_PPC_REL24:
6891 case R_PPC_LOCAL24PC:
6892 case R_PPC_PLTREL24:
6893 max_branch_offset = 1 << 25;
6894 break;
6895
6896 case R_PPC_REL14:
6897 case R_PPC_REL14_BRTAKEN:
6898 case R_PPC_REL14_BRNTAKEN:
6899 max_branch_offset = 1 << 15;
6900 break;
6901
6902 case R_PPC_ADDR16_HA:
6903 if (htab->params->pic_fixup > 0)
6904 break;
6905 continue;
6906
6907 default:
6908 continue;
6909 }
6910
6911 /* Get the value of the symbol referred to by the reloc. */
6912 h = NULL;
6913 if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
6914 {
6915 /* A local symbol. */
6916 Elf_Internal_Sym *isym;
6917
6918 /* Read this BFD's local symbols. */
6919 if (isymbuf == NULL)
6920 {
6921 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
6922 if (isymbuf == NULL)
6923 isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
6924 symtab_hdr->sh_info, 0,
6925 NULL, NULL, NULL);
6926 if (isymbuf == 0)
6927 goto error_return;
6928 }
6929 isym = isymbuf + ELF32_R_SYM (irel->r_info);
6930 if (isym->st_shndx == SHN_UNDEF)
6931 tsec = bfd_und_section_ptr;
6932 else if (isym->st_shndx == SHN_ABS)
6933 tsec = bfd_abs_section_ptr;
6934 else if (isym->st_shndx == SHN_COMMON)
6935 tsec = bfd_com_section_ptr;
6936 else
6937 tsec = bfd_section_from_elf_index (abfd, isym->st_shndx);
6938
6939 toff = isym->st_value;
6940 sym_type = ELF_ST_TYPE (isym->st_info);
6941 }
6942 else
6943 {
6944 /* Global symbol handling. */
6945 unsigned long indx;
6946
6947 indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
6948 h = elf_sym_hashes (abfd)[indx];
6949
6950 while (h->root.type == bfd_link_hash_indirect
6951 || h->root.type == bfd_link_hash_warning)
6952 h = (struct elf_link_hash_entry *) h->root.u.i.link;
6953
6954 if (h->root.type == bfd_link_hash_defined
6955 || h->root.type == bfd_link_hash_defweak)
6956 {
6957 tsec = h->root.u.def.section;
6958 toff = h->root.u.def.value;
6959 }
6960 else if (h->root.type == bfd_link_hash_undefined
6961 || h->root.type == bfd_link_hash_undefweak)
6962 {
6963 tsec = bfd_und_section_ptr;
6964 toff = bfd_link_relocatable (link_info) ? indx : 0;
6965 }
6966 else
6967 continue;
6968
6969 /* If this branch is to __tls_get_addr then we may later
6970 optimise away the call. We won't be needing a long-
6971 branch stub in that case. */
6972 if (bfd_link_executable (link_info)
6973 && h == htab->tls_get_addr
6974 && irel != internal_relocs)
6975 {
6976 unsigned long t_symndx = ELF32_R_SYM (irel[-1].r_info);
6977 unsigned long t_rtype = ELF32_R_TYPE (irel[-1].r_info);
6978 unsigned int tls_mask = 0;
6979
6980 /* The previous reloc should be one of R_PPC_TLSGD or
6981 R_PPC_TLSLD, or for older object files, a reloc
6982 on the __tls_get_addr arg setup insn. Get tls
6983 mask bits from the symbol on that reloc. */
6984 if (t_symndx < symtab_hdr->sh_info)
6985 {
6986 bfd_vma *local_got_offsets = elf_local_got_offsets (abfd);
6987
6988 if (local_got_offsets != NULL)
6989 {
6990 struct plt_entry **local_plt = (struct plt_entry **)
6991 (local_got_offsets + symtab_hdr->sh_info);
6992 char *lgot_masks = (char *)
6993 (local_plt + symtab_hdr->sh_info);
6994 tls_mask = lgot_masks[t_symndx];
6995 }
6996 }
6997 else
6998 {
6999 struct elf_link_hash_entry *th
7000 = elf_sym_hashes (abfd)[t_symndx - symtab_hdr->sh_info];
7001
7002 while (th->root.type == bfd_link_hash_indirect
7003 || th->root.type == bfd_link_hash_warning)
7004 th = (struct elf_link_hash_entry *) th->root.u.i.link;
7005
7006 tls_mask
7007 = ((struct ppc_elf_link_hash_entry *) th)->tls_mask;
7008 }
7009
7010 /* The mask bits tell us if the call will be
7011 optimised away. */
7012 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0
7013 && (t_rtype == R_PPC_TLSGD
7014 || t_rtype == R_PPC_GOT_TLSGD16
7015 || t_rtype == R_PPC_GOT_TLSGD16_LO))
7016 continue;
7017 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0
7018 && (t_rtype == R_PPC_TLSLD
7019 || t_rtype == R_PPC_GOT_TLSLD16
7020 || t_rtype == R_PPC_GOT_TLSLD16_LO))
7021 continue;
7022 }
7023
7024 sym_type = h->type;
7025 }
7026
7027 if (r_type == R_PPC_ADDR16_HA)
7028 {
7029 if (h != NULL
7030 && !h->def_regular
7031 && h->protected_def
7032 && ppc_elf_hash_entry (h)->has_addr16_ha
7033 && ppc_elf_hash_entry (h)->has_addr16_lo)
7034 picfixup_size += 12;
7035 continue;
7036 }
7037
7038 /* The condition here under which we call find_plt_ent must
7039 match that in relocate_section. If we call find_plt_ent here
7040 but not in relocate_section, or vice versa, then the branch
7041 destination used here may be incorrect. */
7042 plist = NULL;
7043 if (h != NULL)
7044 {
7045 /* We know is_branch_reloc (r_type) is true. */
7046 if (h->type == STT_GNU_IFUNC
7047 || r_type == R_PPC_PLTREL24)
7048 plist = &h->plt.plist;
7049 }
7050 else if (sym_type == STT_GNU_IFUNC
7051 && elf_local_got_offsets (abfd) != NULL)
7052 {
7053 bfd_vma *local_got_offsets = elf_local_got_offsets (abfd);
7054 struct plt_entry **local_plt = (struct plt_entry **)
7055 (local_got_offsets + symtab_hdr->sh_info);
7056 plist = local_plt + ELF32_R_SYM (irel->r_info);
7057 }
7058 if (plist != NULL)
7059 {
7060 bfd_vma addend = 0;
7061 struct plt_entry *ent;
7062
7063 if (r_type == R_PPC_PLTREL24 && bfd_link_pic (link_info))
7064 addend = irel->r_addend;
7065 ent = find_plt_ent (plist, got2, addend);
7066 if (ent != NULL)
7067 {
7068 if (htab->plt_type == PLT_NEW
7069 || h == NULL
7070 || !htab->elf.dynamic_sections_created
7071 || h->dynindx == -1)
7072 {
7073 tsec = htab->glink;
7074 toff = ent->glink_offset;
7075 }
7076 else
7077 {
7078 tsec = htab->elf.splt;
7079 toff = ent->plt.offset;
7080 }
7081 }
7082 }
7083
7084 /* If the branch and target are in the same section, you have
7085 no hope of adding stubs. We'll error out later should the
7086 branch overflow. */
7087 if (tsec == isec)
7088 continue;
7089
7090 /* There probably isn't any reason to handle symbols in
7091 SEC_MERGE sections; SEC_MERGE doesn't seem a likely
7092 attribute for a code section, and we are only looking at
7093 branches. However, implement it correctly here as a
7094 reference for other target relax_section functions. */
7095 if (0 && tsec->sec_info_type == SEC_INFO_TYPE_MERGE)
7096 {
7097 /* At this stage in linking, no SEC_MERGE symbol has been
7098 adjusted, so all references to such symbols need to be
7099 passed through _bfd_merged_section_offset. (Later, in
7100 relocate_section, all SEC_MERGE symbols *except* for
7101 section symbols have been adjusted.)
7102
7103 gas may reduce relocations against symbols in SEC_MERGE
7104 sections to a relocation against the section symbol when
7105 the original addend was zero. When the reloc is against
7106 a section symbol we should include the addend in the
7107 offset passed to _bfd_merged_section_offset, since the
7108 location of interest is the original symbol. On the
7109 other hand, an access to "sym+addend" where "sym" is not
7110 a section symbol should not include the addend; Such an
7111 access is presumed to be an offset from "sym"; The
7112 location of interest is just "sym". */
7113 if (sym_type == STT_SECTION)
7114 toff += irel->r_addend;
7115
7116 toff
7117 = _bfd_merged_section_offset (abfd, &tsec,
7118 elf_section_data (tsec)->sec_info,
7119 toff);
7120
7121 if (sym_type != STT_SECTION)
7122 toff += irel->r_addend;
7123 }
7124 /* PLTREL24 addends are special. */
7125 else if (r_type != R_PPC_PLTREL24)
7126 toff += irel->r_addend;
7127
7128 /* Attempted -shared link of non-pic code loses. */
7129 if ((!bfd_link_relocatable (link_info)
7130 && tsec == bfd_und_section_ptr)
7131 || tsec->output_section == NULL
7132 || (tsec->owner != NULL
7133 && (tsec->owner->flags & BFD_PLUGIN) != 0))
7134 continue;
7135
7136 roff = irel->r_offset;
7137
7138 /* If the branch is in range, no need to do anything. */
7139 if (tsec != bfd_und_section_ptr
7140 && (!bfd_link_relocatable (link_info)
7141 /* A relocatable link may have sections moved during
7142 final link, so do not presume they remain in range. */
7143 || tsec->output_section == isec->output_section))
7144 {
7145 bfd_vma symaddr, reladdr;
7146
7147 symaddr = tsec->output_section->vma + tsec->output_offset + toff;
7148 reladdr = isec->output_section->vma + isec->output_offset + roff;
7149 if (symaddr - reladdr + max_branch_offset
7150 < 2 * max_branch_offset)
7151 continue;
7152 }
7153
7154 /* Look for an existing fixup to this address. */
7155 for (f = branch_fixups; f ; f = f->next)
7156 if (f->tsec == tsec && f->toff == toff)
7157 break;
7158
7159 if (f == NULL)
7160 {
7161 size_t size;
7162 unsigned long stub_rtype;
7163
7164 val = trampoff - roff;
7165 if (val >= max_branch_offset)
7166 /* Oh dear, we can't reach a trampoline. Don't try to add
7167 one. We'll report an error later. */
7168 continue;
7169
7170 if (bfd_link_pic (link_info))
7171 {
7172 size = 4 * ARRAY_SIZE (shared_stub_entry);
7173 insn_offset = 12;
7174 }
7175 else
7176 {
7177 size = 4 * ARRAY_SIZE (stub_entry);
7178 insn_offset = 0;
7179 }
7180 stub_rtype = R_PPC_RELAX;
7181 if (tsec == htab->elf.splt
7182 || tsec == htab->glink)
7183 {
7184 stub_rtype = R_PPC_RELAX_PLT;
7185 if (r_type == R_PPC_PLTREL24)
7186 stub_rtype = R_PPC_RELAX_PLTREL24;
7187 }
7188
7189 /* Hijack the old relocation. Since we need two
7190 relocations for this use a "composite" reloc. */
7191 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
7192 stub_rtype);
7193 irel->r_offset = trampoff + insn_offset;
7194 if (r_type == R_PPC_PLTREL24
7195 && stub_rtype != R_PPC_RELAX_PLTREL24)
7196 irel->r_addend = 0;
7197
7198 /* Record the fixup so we don't do it again this section. */
7199 f = bfd_malloc (sizeof (*f));
7200 f->next = branch_fixups;
7201 f->tsec = tsec;
7202 f->toff = toff;
7203 f->trampoff = trampoff;
7204 branch_fixups = f;
7205
7206 trampoff += size;
7207 changes++;
7208 }
7209 else
7210 {
7211 val = f->trampoff - roff;
7212 if (val >= max_branch_offset)
7213 continue;
7214
7215 /* Nop out the reloc, since we're finalizing things here. */
7216 irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
7217 }
7218
7219 /* Get the section contents. */
7220 if (contents == NULL)
7221 {
7222 /* Get cached copy if it exists. */
7223 if (elf_section_data (isec)->this_hdr.contents != NULL)
7224 contents = elf_section_data (isec)->this_hdr.contents;
7225 /* Go get them off disk. */
7226 else if (!bfd_malloc_and_get_section (abfd, isec, &contents))
7227 goto error_return;
7228 }
7229
7230 /* Fix up the existing branch to hit the trampoline. */
7231 hit_addr = contents + roff;
7232 switch (r_type)
7233 {
7234 case R_PPC_REL24:
7235 case R_PPC_LOCAL24PC:
7236 case R_PPC_PLTREL24:
7237 t0 = bfd_get_32 (abfd, hit_addr);
7238 t0 &= ~0x3fffffc;
7239 t0 |= val & 0x3fffffc;
7240 bfd_put_32 (abfd, t0, hit_addr);
7241 break;
7242
7243 case R_PPC_REL14:
7244 case R_PPC_REL14_BRTAKEN:
7245 case R_PPC_REL14_BRNTAKEN:
7246 t0 = bfd_get_32 (abfd, hit_addr);
7247 t0 &= ~0xfffc;
7248 t0 |= val & 0xfffc;
7249 bfd_put_32 (abfd, t0, hit_addr);
7250 break;
7251 }
7252 }
7253
7254 while (branch_fixups != NULL)
7255 {
7256 struct one_branch_fixup *f = branch_fixups;
7257 branch_fixups = branch_fixups->next;
7258 free (f);
7259 }
7260 }
7261
7262 workaround_change = FALSE;
7263 newsize = trampoff;
7264 if (htab->params->ppc476_workaround
7265 && (!bfd_link_relocatable (link_info)
7266 || isec->output_section->alignment_power >= htab->params->pagesize_p2))
7267 {
7268 bfd_vma addr, end_addr;
7269 unsigned int crossings;
7270 bfd_vma pagesize = (bfd_vma) 1 << htab->params->pagesize_p2;
7271
7272 addr = isec->output_section->vma + isec->output_offset;
7273 end_addr = addr + trampoff;
7274 addr &= -pagesize;
7275 crossings = ((end_addr & -pagesize) - addr) >> htab->params->pagesize_p2;
7276 if (crossings != 0)
7277 {
7278 /* Keep space aligned, to ensure the patch code itself does
7279 not cross a page. Don't decrease size calculated on a
7280 previous pass as otherwise we might never settle on a layout. */
7281 newsize = 15 - ((end_addr - 1) & 15);
7282 newsize += crossings * 16;
7283 if (relax_info->workaround_size < newsize)
7284 {
7285 relax_info->workaround_size = newsize;
7286 workaround_change = TRUE;
7287 }
7288 /* Ensure relocate_section is called. */
7289 isec->flags |= SEC_RELOC;
7290 }
7291 newsize = trampoff + relax_info->workaround_size;
7292 }
7293
7294 if (htab->params->pic_fixup > 0)
7295 {
7296 picfixup_size -= relax_info->picfixup_size;
7297 if (picfixup_size != 0)
7298 relax_info->picfixup_size += picfixup_size;
7299 newsize += relax_info->picfixup_size;
7300 }
7301
7302 if (changes != 0 || picfixup_size != 0 || workaround_change)
7303 isec->size = newsize;
7304
7305 if (isymbuf != NULL
7306 && symtab_hdr->contents != (unsigned char *) isymbuf)
7307 {
7308 if (! link_info->keep_memory)
7309 free (isymbuf);
7310 else
7311 {
7312 /* Cache the symbols for elf_link_input_bfd. */
7313 symtab_hdr->contents = (unsigned char *) isymbuf;
7314 }
7315 }
7316
7317 if (contents != NULL
7318 && elf_section_data (isec)->this_hdr.contents != contents)
7319 {
7320 if (!changes && !link_info->keep_memory)
7321 free (contents);
7322 else
7323 {
7324 /* Cache the section contents for elf_link_input_bfd. */
7325 elf_section_data (isec)->this_hdr.contents = contents;
7326 }
7327 }
7328
7329 changes += picfixup_size;
7330 if (changes != 0)
7331 {
7332 /* Append sufficient NOP relocs so we can write out relocation
7333 information for the trampolines. */
7334 Elf_Internal_Shdr *rel_hdr;
7335 Elf_Internal_Rela *new_relocs = bfd_malloc ((changes + isec->reloc_count)
7336 * sizeof (*new_relocs));
7337 unsigned ix;
7338
7339 if (!new_relocs)
7340 goto error_return;
7341 memcpy (new_relocs, internal_relocs,
7342 isec->reloc_count * sizeof (*new_relocs));
7343 for (ix = changes; ix--;)
7344 {
7345 irel = new_relocs + ix + isec->reloc_count;
7346
7347 irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
7348 }
7349 if (internal_relocs != elf_section_data (isec)->relocs)
7350 free (internal_relocs);
7351 elf_section_data (isec)->relocs = new_relocs;
7352 isec->reloc_count += changes;
7353 rel_hdr = _bfd_elf_single_rel_hdr (isec);
7354 rel_hdr->sh_size += changes * rel_hdr->sh_entsize;
7355 }
7356 else if (internal_relocs != NULL
7357 && elf_section_data (isec)->relocs != internal_relocs)
7358 free (internal_relocs);
7359
7360 *again = changes != 0 || workaround_change;
7361 return TRUE;
7362
7363 error_return:
7364 while (branch_fixups != NULL)
7365 {
7366 struct one_branch_fixup *f = branch_fixups;
7367 branch_fixups = branch_fixups->next;
7368 free (f);
7369 }
7370 if (isymbuf != NULL && (unsigned char *) isymbuf != symtab_hdr->contents)
7371 free (isymbuf);
7372 if (contents != NULL
7373 && elf_section_data (isec)->this_hdr.contents != contents)
7374 free (contents);
7375 if (internal_relocs != NULL
7376 && elf_section_data (isec)->relocs != internal_relocs)
7377 free (internal_relocs);
7378 return FALSE;
7379 }
7380 \f
7381 /* What to do when ld finds relocations against symbols defined in
7382 discarded sections. */
7383
7384 static unsigned int
7385 ppc_elf_action_discarded (asection *sec)
7386 {
7387 if (strcmp (".fixup", sec->name) == 0)
7388 return 0;
7389
7390 if (strcmp (".got2", sec->name) == 0)
7391 return 0;
7392
7393 return _bfd_elf_default_action_discarded (sec);
7394 }
7395 \f
7396 /* Fill in the address for a pointer generated in a linker section. */
7397
7398 static bfd_vma
7399 elf_finish_pointer_linker_section (bfd *input_bfd,
7400 elf_linker_section_t *lsect,
7401 struct elf_link_hash_entry *h,
7402 bfd_vma relocation,
7403 const Elf_Internal_Rela *rel)
7404 {
7405 elf_linker_section_pointers_t *linker_section_ptr;
7406
7407 BFD_ASSERT (lsect != NULL);
7408
7409 if (h != NULL)
7410 {
7411 /* Handle global symbol. */
7412 struct ppc_elf_link_hash_entry *eh;
7413
7414 eh = (struct ppc_elf_link_hash_entry *) h;
7415 BFD_ASSERT (eh->elf.def_regular);
7416 linker_section_ptr = eh->linker_section_pointer;
7417 }
7418 else
7419 {
7420 /* Handle local symbol. */
7421 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
7422
7423 BFD_ASSERT (is_ppc_elf (input_bfd));
7424 BFD_ASSERT (elf_local_ptr_offsets (input_bfd) != NULL);
7425 linker_section_ptr = elf_local_ptr_offsets (input_bfd)[r_symndx];
7426 }
7427
7428 linker_section_ptr = elf_find_pointer_linker_section (linker_section_ptr,
7429 rel->r_addend,
7430 lsect);
7431 BFD_ASSERT (linker_section_ptr != NULL);
7432
7433 /* Offset will always be a multiple of four, so use the bottom bit
7434 as a "written" flag. */
7435 if ((linker_section_ptr->offset & 1) == 0)
7436 {
7437 bfd_put_32 (lsect->section->owner,
7438 relocation + linker_section_ptr->addend,
7439 lsect->section->contents + linker_section_ptr->offset);
7440 linker_section_ptr->offset += 1;
7441 }
7442
7443 relocation = (lsect->section->output_section->vma
7444 + lsect->section->output_offset
7445 + linker_section_ptr->offset - 1
7446 - SYM_VAL (lsect->sym));
7447
7448 #ifdef DEBUG
7449 fprintf (stderr,
7450 "Finish pointer in linker section %s, offset = %ld (0x%lx)\n",
7451 lsect->name, (long) relocation, (long) relocation);
7452 #endif
7453
7454 return relocation;
7455 }
7456
7457 #define PPC_LO(v) ((v) & 0xffff)
7458 #define PPC_HI(v) (((v) >> 16) & 0xffff)
7459 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
7460
7461 static void
7462 write_glink_stub (struct plt_entry *ent, asection *plt_sec, unsigned char *p,
7463 struct bfd_link_info *info)
7464 {
7465 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
7466 bfd *output_bfd = info->output_bfd;
7467 bfd_vma plt;
7468
7469 plt = ((ent->plt.offset & ~1)
7470 + plt_sec->output_section->vma
7471 + plt_sec->output_offset);
7472
7473 if (bfd_link_pic (info))
7474 {
7475 bfd_vma got = 0;
7476
7477 if (ent->addend >= 32768)
7478 got = (ent->addend
7479 + ent->sec->output_section->vma
7480 + ent->sec->output_offset);
7481 else if (htab->elf.hgot != NULL)
7482 got = SYM_VAL (htab->elf.hgot);
7483
7484 plt -= got;
7485
7486 if (plt + 0x8000 < 0x10000)
7487 {
7488 bfd_put_32 (output_bfd, LWZ_11_30 + PPC_LO (plt), p);
7489 p += 4;
7490 bfd_put_32 (output_bfd, MTCTR_11, p);
7491 p += 4;
7492 bfd_put_32 (output_bfd, BCTR, p);
7493 p += 4;
7494 bfd_put_32 (output_bfd, htab->params->ppc476_workaround ? BA : NOP, p);
7495 p += 4;
7496 }
7497 else
7498 {
7499 bfd_put_32 (output_bfd, ADDIS_11_30 + PPC_HA (plt), p);
7500 p += 4;
7501 bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
7502 p += 4;
7503 bfd_put_32 (output_bfd, MTCTR_11, p);
7504 p += 4;
7505 bfd_put_32 (output_bfd, BCTR, p);
7506 p += 4;
7507 }
7508 }
7509 else
7510 {
7511 bfd_put_32 (output_bfd, LIS_11 + PPC_HA (plt), p);
7512 p += 4;
7513 bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
7514 p += 4;
7515 bfd_put_32 (output_bfd, MTCTR_11, p);
7516 p += 4;
7517 bfd_put_32 (output_bfd, BCTR, p);
7518 p += 4;
7519 }
7520 }
7521
7522 /* Return true if symbol is defined statically. */
7523
7524 static bfd_boolean
7525 is_static_defined (struct elf_link_hash_entry *h)
7526 {
7527 return ((h->root.type == bfd_link_hash_defined
7528 || h->root.type == bfd_link_hash_defweak)
7529 && h->root.u.def.section != NULL
7530 && h->root.u.def.section->output_section != NULL);
7531 }
7532
7533 /* If INSN is an opcode that may be used with an @tls operand, return
7534 the transformed insn for TLS optimisation, otherwise return 0. If
7535 REG is non-zero only match an insn with RB or RA equal to REG. */
7536
7537 unsigned int
7538 _bfd_elf_ppc_at_tls_transform (unsigned int insn, unsigned int reg)
7539 {
7540 unsigned int rtra;
7541
7542 if ((insn & (0x3f << 26)) != 31 << 26)
7543 return 0;
7544
7545 if (reg == 0 || ((insn >> 11) & 0x1f) == reg)
7546 rtra = insn & ((1 << 26) - (1 << 16));
7547 else if (((insn >> 16) & 0x1f) == reg)
7548 rtra = (insn & (0x1f << 21)) | ((insn & (0x1f << 11)) << 5);
7549 else
7550 return 0;
7551
7552 if ((insn & (0x3ff << 1)) == 266 << 1)
7553 /* add -> addi. */
7554 insn = 14 << 26;
7555 else if ((insn & (0x1f << 1)) == 23 << 1
7556 && ((insn & (0x1f << 6)) < 14 << 6
7557 || ((insn & (0x1f << 6)) >= 16 << 6
7558 && (insn & (0x1f << 6)) < 24 << 6)))
7559 /* load and store indexed -> dform. */
7560 insn = (32 | ((insn >> 6) & 0x1f)) << 26;
7561 else if ((insn & (((0x1a << 5) | 0x1f) << 1)) == 21 << 1)
7562 /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
7563 insn = ((58 | ((insn >> 6) & 4)) << 26) | ((insn >> 6) & 1);
7564 else if ((insn & (((0x1f << 5) | 0x1f) << 1)) == 341 << 1)
7565 /* lwax -> lwa. */
7566 insn = (58 << 26) | 2;
7567 else
7568 return 0;
7569 insn |= rtra;
7570 return insn;
7571 }
7572
7573 /* If INSN is an opcode that may be used with an @tprel operand, return
7574 the transformed insn for an undefined weak symbol, ie. with the
7575 thread pointer REG operand removed. Otherwise return 0. */
7576
7577 unsigned int
7578 _bfd_elf_ppc_at_tprel_transform (unsigned int insn, unsigned int reg)
7579 {
7580 if ((insn & (0x1f << 16)) == reg << 16
7581 && ((insn & (0x3f << 26)) == 14u << 26 /* addi */
7582 || (insn & (0x3f << 26)) == 15u << 26 /* addis */
7583 || (insn & (0x3f << 26)) == 32u << 26 /* lwz */
7584 || (insn & (0x3f << 26)) == 34u << 26 /* lbz */
7585 || (insn & (0x3f << 26)) == 36u << 26 /* stw */
7586 || (insn & (0x3f << 26)) == 38u << 26 /* stb */
7587 || (insn & (0x3f << 26)) == 40u << 26 /* lhz */
7588 || (insn & (0x3f << 26)) == 42u << 26 /* lha */
7589 || (insn & (0x3f << 26)) == 44u << 26 /* sth */
7590 || (insn & (0x3f << 26)) == 46u << 26 /* lmw */
7591 || (insn & (0x3f << 26)) == 47u << 26 /* stmw */
7592 || (insn & (0x3f << 26)) == 48u << 26 /* lfs */
7593 || (insn & (0x3f << 26)) == 50u << 26 /* lfd */
7594 || (insn & (0x3f << 26)) == 52u << 26 /* stfs */
7595 || (insn & (0x3f << 26)) == 54u << 26 /* stfd */
7596 || ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
7597 && (insn & 3) != 1)
7598 || ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */
7599 && ((insn & 3) == 0 || (insn & 3) == 3))))
7600 {
7601 insn &= ~(0x1f << 16);
7602 }
7603 else if ((insn & (0x1f << 21)) == reg << 21
7604 && ((insn & (0x3e << 26)) == 24u << 26 /* ori, oris */
7605 || (insn & (0x3e << 26)) == 26u << 26 /* xori,xoris */
7606 || (insn & (0x3e << 26)) == 28u << 26 /* andi,andis */))
7607 {
7608 insn &= ~(0x1f << 21);
7609 insn |= (insn & (0x1f << 16)) << 5;
7610 if ((insn & (0x3e << 26)) == 26 << 26 /* xori,xoris */)
7611 insn -= 2 >> 26; /* convert to ori,oris */
7612 }
7613 else
7614 insn = 0;
7615 return insn;
7616 }
7617
7618 static bfd_boolean
7619 is_insn_ds_form (unsigned int insn)
7620 {
7621 return ((insn & (0x3f << 26)) == 58u << 26 /* ld,ldu,lwa */
7622 || (insn & (0x3f << 26)) == 62u << 26 /* std,stdu,stq */
7623 || (insn & (0x3f << 26)) == 57u << 26 /* lfdp */
7624 || (insn & (0x3f << 26)) == 61u << 26 /* stfdp */);
7625 }
7626
7627 static bfd_boolean
7628 is_insn_dq_form (unsigned int insn)
7629 {
7630 return ((insn & (0x3f << 26)) == 56u << 26 /* lq */
7631 || ((insn & (0x3f << 26)) == (61u << 26) /* lxv, stxv */
7632 && (insn & 3) == 1));
7633 }
7634
7635 /* The RELOCATE_SECTION function is called by the ELF backend linker
7636 to handle the relocations for a section.
7637
7638 The relocs are always passed as Rela structures; if the section
7639 actually uses Rel structures, the r_addend field will always be
7640 zero.
7641
7642 This function is responsible for adjust the section contents as
7643 necessary, and (if using Rela relocs and generating a
7644 relocatable output file) adjusting the reloc addend as
7645 necessary.
7646
7647 This function does not have to worry about setting the reloc
7648 address or the reloc symbol index.
7649
7650 LOCAL_SYMS is a pointer to the swapped in local symbols.
7651
7652 LOCAL_SECTIONS is an array giving the section in the input file
7653 corresponding to the st_shndx field of each local symbol.
7654
7655 The global hash table entry for the global symbols can be found
7656 via elf_sym_hashes (input_bfd).
7657
7658 When generating relocatable output, this function must handle
7659 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
7660 going to be the section symbol corresponding to the output
7661 section, which means that the addend must be adjusted
7662 accordingly. */
7663
7664 static bfd_boolean
7665 ppc_elf_relocate_section (bfd *output_bfd,
7666 struct bfd_link_info *info,
7667 bfd *input_bfd,
7668 asection *input_section,
7669 bfd_byte *contents,
7670 Elf_Internal_Rela *relocs,
7671 Elf_Internal_Sym *local_syms,
7672 asection **local_sections)
7673 {
7674 Elf_Internal_Shdr *symtab_hdr;
7675 struct elf_link_hash_entry **sym_hashes;
7676 struct ppc_elf_link_hash_table *htab;
7677 Elf_Internal_Rela *rel;
7678 Elf_Internal_Rela *wrel;
7679 Elf_Internal_Rela *relend;
7680 Elf_Internal_Rela outrel;
7681 asection *got2;
7682 bfd_vma *local_got_offsets;
7683 bfd_boolean ret = TRUE;
7684 bfd_vma d_offset = (bfd_big_endian (input_bfd) ? 2 : 0);
7685 bfd_boolean is_vxworks_tls;
7686 unsigned int picfixup_size = 0;
7687 struct ppc_elf_relax_info *relax_info = NULL;
7688
7689 #ifdef DEBUG
7690 _bfd_error_handler ("ppc_elf_relocate_section called for %B section %A, "
7691 "%ld relocations%s",
7692 input_bfd, input_section,
7693 (long) input_section->reloc_count,
7694 (bfd_link_relocatable (info)) ? " (relocatable)" : "");
7695 #endif
7696
7697 got2 = bfd_get_section_by_name (input_bfd, ".got2");
7698
7699 /* Initialize howto table if not already done. */
7700 if (!ppc_elf_howto_table[R_PPC_ADDR32])
7701 ppc_elf_howto_init ();
7702
7703 htab = ppc_elf_hash_table (info);
7704 local_got_offsets = elf_local_got_offsets (input_bfd);
7705 symtab_hdr = &elf_symtab_hdr (input_bfd);
7706 sym_hashes = elf_sym_hashes (input_bfd);
7707 /* We have to handle relocations in vxworks .tls_vars sections
7708 specially, because the dynamic loader is 'weird'. */
7709 is_vxworks_tls = (htab->is_vxworks && bfd_link_pic (info)
7710 && !strcmp (input_section->output_section->name,
7711 ".tls_vars"));
7712 if (input_section->sec_info_type == SEC_INFO_TYPE_TARGET)
7713 relax_info = elf_section_data (input_section)->sec_info;
7714 rel = wrel = relocs;
7715 relend = relocs + input_section->reloc_count;
7716 for (; rel < relend; wrel++, rel++)
7717 {
7718 enum elf_ppc_reloc_type r_type;
7719 bfd_vma addend;
7720 bfd_reloc_status_type r;
7721 Elf_Internal_Sym *sym;
7722 asection *sec;
7723 struct elf_link_hash_entry *h;
7724 const char *sym_name;
7725 reloc_howto_type *howto;
7726 unsigned long r_symndx;
7727 bfd_vma relocation;
7728 bfd_vma branch_bit, from;
7729 bfd_boolean unresolved_reloc;
7730 bfd_boolean warned;
7731 unsigned int tls_type, tls_mask, tls_gd;
7732 struct plt_entry **ifunc;
7733 struct reloc_howto_struct alt_howto;
7734
7735 again:
7736 r_type = ELF32_R_TYPE (rel->r_info);
7737 sym = NULL;
7738 sec = NULL;
7739 h = NULL;
7740 unresolved_reloc = FALSE;
7741 warned = FALSE;
7742 r_symndx = ELF32_R_SYM (rel->r_info);
7743
7744 if (r_symndx < symtab_hdr->sh_info)
7745 {
7746 sym = local_syms + r_symndx;
7747 sec = local_sections[r_symndx];
7748 sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
7749
7750 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
7751 }
7752 else
7753 {
7754 bfd_boolean ignored;
7755
7756 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
7757 r_symndx, symtab_hdr, sym_hashes,
7758 h, sec, relocation,
7759 unresolved_reloc, warned, ignored);
7760
7761 sym_name = h->root.root.string;
7762 }
7763
7764 if (sec != NULL && discarded_section (sec))
7765 {
7766 /* For relocs against symbols from removed linkonce sections,
7767 or sections discarded by a linker script, we just want the
7768 section contents zeroed. Avoid any special processing. */
7769 howto = NULL;
7770 if (r_type < R_PPC_max)
7771 howto = ppc_elf_howto_table[r_type];
7772
7773 _bfd_clear_contents (howto, input_bfd, input_section,
7774 contents + rel->r_offset);
7775 wrel->r_offset = rel->r_offset;
7776 wrel->r_info = 0;
7777 wrel->r_addend = 0;
7778
7779 /* For ld -r, remove relocations in debug sections against
7780 symbols defined in discarded sections. Not done for
7781 non-debug to preserve relocs in .eh_frame which the
7782 eh_frame editing code expects to be present. */
7783 if (bfd_link_relocatable (info)
7784 && (input_section->flags & SEC_DEBUGGING))
7785 wrel--;
7786
7787 continue;
7788 }
7789
7790 if (bfd_link_relocatable (info))
7791 {
7792 if (got2 != NULL
7793 && r_type == R_PPC_PLTREL24
7794 && rel->r_addend != 0)
7795 {
7796 /* R_PPC_PLTREL24 is rather special. If non-zero, the
7797 addend specifies the GOT pointer offset within .got2. */
7798 rel->r_addend += got2->output_offset;
7799 }
7800 if (r_type != R_PPC_RELAX_PLT
7801 && r_type != R_PPC_RELAX_PLTREL24
7802 && r_type != R_PPC_RELAX)
7803 goto copy_reloc;
7804 }
7805
7806 /* TLS optimizations. Replace instruction sequences and relocs
7807 based on information we collected in tls_optimize. We edit
7808 RELOCS so that --emit-relocs will output something sensible
7809 for the final instruction stream. */
7810 tls_mask = 0;
7811 tls_gd = 0;
7812 if (h != NULL)
7813 tls_mask = ((struct ppc_elf_link_hash_entry *) h)->tls_mask;
7814 else if (local_got_offsets != NULL)
7815 {
7816 struct plt_entry **local_plt;
7817 char *lgot_masks;
7818 local_plt
7819 = (struct plt_entry **) (local_got_offsets + symtab_hdr->sh_info);
7820 lgot_masks = (char *) (local_plt + symtab_hdr->sh_info);
7821 tls_mask = lgot_masks[r_symndx];
7822 }
7823
7824 /* Ensure reloc mapping code below stays sane. */
7825 if ((R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TLSGD16 & 3)
7826 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TLSGD16_LO & 3)
7827 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TLSGD16_HI & 3)
7828 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TLSGD16_HA & 3)
7829 || (R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TPREL16 & 3)
7830 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TPREL16_LO & 3)
7831 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TPREL16_HI & 3)
7832 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TPREL16_HA & 3))
7833 abort ();
7834 switch (r_type)
7835 {
7836 default:
7837 break;
7838
7839 case R_PPC_GOT_TPREL16:
7840 case R_PPC_GOT_TPREL16_LO:
7841 if ((tls_mask & TLS_TLS) != 0
7842 && (tls_mask & TLS_TPREL) == 0)
7843 {
7844 bfd_vma insn;
7845
7846 insn = bfd_get_32 (input_bfd,
7847 contents + rel->r_offset - d_offset);
7848 insn &= 31 << 21;
7849 insn |= 0x3c020000; /* addis 0,2,0 */
7850 bfd_put_32 (input_bfd, insn,
7851 contents + rel->r_offset - d_offset);
7852 r_type = R_PPC_TPREL16_HA;
7853 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7854 }
7855 break;
7856
7857 case R_PPC_TLS:
7858 if ((tls_mask & TLS_TLS) != 0
7859 && (tls_mask & TLS_TPREL) == 0)
7860 {
7861 bfd_vma insn;
7862
7863 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
7864 insn = _bfd_elf_ppc_at_tls_transform (insn, 2);
7865 if (insn == 0)
7866 abort ();
7867 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
7868 r_type = R_PPC_TPREL16_LO;
7869 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7870
7871 /* Was PPC_TLS which sits on insn boundary, now
7872 PPC_TPREL16_LO which is at low-order half-word. */
7873 rel->r_offset += d_offset;
7874 }
7875 break;
7876
7877 case R_PPC_GOT_TLSGD16_HI:
7878 case R_PPC_GOT_TLSGD16_HA:
7879 tls_gd = TLS_TPRELGD;
7880 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
7881 goto tls_gdld_hi;
7882 break;
7883
7884 case R_PPC_GOT_TLSLD16_HI:
7885 case R_PPC_GOT_TLSLD16_HA:
7886 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
7887 {
7888 tls_gdld_hi:
7889 if ((tls_mask & tls_gd) != 0)
7890 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
7891 + R_PPC_GOT_TPREL16);
7892 else
7893 {
7894 rel->r_offset -= d_offset;
7895 bfd_put_32 (input_bfd, NOP, contents + rel->r_offset);
7896 r_type = R_PPC_NONE;
7897 }
7898 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7899 }
7900 break;
7901
7902 case R_PPC_GOT_TLSGD16:
7903 case R_PPC_GOT_TLSGD16_LO:
7904 tls_gd = TLS_TPRELGD;
7905 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
7906 goto tls_ldgd_opt;
7907 break;
7908
7909 case R_PPC_GOT_TLSLD16:
7910 case R_PPC_GOT_TLSLD16_LO:
7911 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
7912 {
7913 unsigned int insn1, insn2;
7914 bfd_vma offset;
7915
7916 tls_ldgd_opt:
7917 offset = (bfd_vma) -1;
7918 /* If not using the newer R_PPC_TLSGD/LD to mark
7919 __tls_get_addr calls, we must trust that the call
7920 stays with its arg setup insns, ie. that the next
7921 reloc is the __tls_get_addr call associated with
7922 the current reloc. Edit both insns. */
7923 if (input_section->has_tls_get_addr_call
7924 && rel + 1 < relend
7925 && branch_reloc_hash_match (input_bfd, rel + 1,
7926 htab->tls_get_addr))
7927 offset = rel[1].r_offset;
7928 /* We read the low GOT_TLS insn because we need to keep
7929 the destination reg. It may be something other than
7930 the usual r3, and moved to r3 before the call by
7931 intervening code. */
7932 insn1 = bfd_get_32 (input_bfd,
7933 contents + rel->r_offset - d_offset);
7934 if ((tls_mask & tls_gd) != 0)
7935 {
7936 /* IE */
7937 insn1 &= (0x1f << 21) | (0x1f << 16);
7938 insn1 |= 32 << 26; /* lwz */
7939 if (offset != (bfd_vma) -1)
7940 {
7941 rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
7942 insn2 = 0x7c631214; /* add 3,3,2 */
7943 bfd_put_32 (input_bfd, insn2, contents + offset);
7944 }
7945 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
7946 + R_PPC_GOT_TPREL16);
7947 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7948 }
7949 else
7950 {
7951 /* LE */
7952 insn1 &= 0x1f << 21;
7953 insn1 |= 0x3c020000; /* addis r,2,0 */
7954 if (tls_gd == 0)
7955 {
7956 /* Was an LD reloc. */
7957 for (r_symndx = 0;
7958 r_symndx < symtab_hdr->sh_info;
7959 r_symndx++)
7960 if (local_sections[r_symndx] == sec)
7961 break;
7962 if (r_symndx >= symtab_hdr->sh_info)
7963 r_symndx = STN_UNDEF;
7964 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
7965 if (r_symndx != STN_UNDEF)
7966 rel->r_addend -= (local_syms[r_symndx].st_value
7967 + sec->output_offset
7968 + sec->output_section->vma);
7969 }
7970 r_type = R_PPC_TPREL16_HA;
7971 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7972 if (offset != (bfd_vma) -1)
7973 {
7974 rel[1].r_info = ELF32_R_INFO (r_symndx, R_PPC_TPREL16_LO);
7975 rel[1].r_offset = offset + d_offset;
7976 rel[1].r_addend = rel->r_addend;
7977 insn2 = 0x38630000; /* addi 3,3,0 */
7978 bfd_put_32 (input_bfd, insn2, contents + offset);
7979 }
7980 }
7981 bfd_put_32 (input_bfd, insn1,
7982 contents + rel->r_offset - d_offset);
7983 if (tls_gd == 0)
7984 {
7985 /* We changed the symbol on an LD reloc. Start over
7986 in order to get h, sym, sec etc. right. */
7987 goto again;
7988 }
7989 }
7990 break;
7991
7992 case R_PPC_TLSGD:
7993 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
7994 {
7995 unsigned int insn2;
7996 bfd_vma offset = rel->r_offset;
7997
7998 if ((tls_mask & TLS_TPRELGD) != 0)
7999 {
8000 /* IE */
8001 r_type = R_PPC_NONE;
8002 insn2 = 0x7c631214; /* add 3,3,2 */
8003 }
8004 else
8005 {
8006 /* LE */
8007 r_type = R_PPC_TPREL16_LO;
8008 rel->r_offset += d_offset;
8009 insn2 = 0x38630000; /* addi 3,3,0 */
8010 }
8011 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
8012 bfd_put_32 (input_bfd, insn2, contents + offset);
8013 /* Zap the reloc on the _tls_get_addr call too. */
8014 BFD_ASSERT (offset == rel[1].r_offset);
8015 rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
8016 }
8017 break;
8018
8019 case R_PPC_TLSLD:
8020 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
8021 {
8022 unsigned int insn2;
8023
8024 for (r_symndx = 0;
8025 r_symndx < symtab_hdr->sh_info;
8026 r_symndx++)
8027 if (local_sections[r_symndx] == sec)
8028 break;
8029 if (r_symndx >= symtab_hdr->sh_info)
8030 r_symndx = STN_UNDEF;
8031 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
8032 if (r_symndx != STN_UNDEF)
8033 rel->r_addend -= (local_syms[r_symndx].st_value
8034 + sec->output_offset
8035 + sec->output_section->vma);
8036
8037 rel->r_info = ELF32_R_INFO (r_symndx, R_PPC_TPREL16_LO);
8038 rel->r_offset += d_offset;
8039 insn2 = 0x38630000; /* addi 3,3,0 */
8040 bfd_put_32 (input_bfd, insn2,
8041 contents + rel->r_offset - d_offset);
8042 /* Zap the reloc on the _tls_get_addr call too. */
8043 BFD_ASSERT (rel->r_offset - d_offset == rel[1].r_offset);
8044 rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
8045 goto again;
8046 }
8047 break;
8048 }
8049
8050 /* Handle other relocations that tweak non-addend part of insn. */
8051 branch_bit = 0;
8052 switch (r_type)
8053 {
8054 default:
8055 break;
8056
8057 /* Branch taken prediction relocations. */
8058 case R_PPC_ADDR14_BRTAKEN:
8059 case R_PPC_REL14_BRTAKEN:
8060 branch_bit = BRANCH_PREDICT_BIT;
8061 /* Fall through. */
8062
8063 /* Branch not taken prediction relocations. */
8064 case R_PPC_ADDR14_BRNTAKEN:
8065 case R_PPC_REL14_BRNTAKEN:
8066 {
8067 bfd_vma insn;
8068
8069 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
8070 insn &= ~BRANCH_PREDICT_BIT;
8071 insn |= branch_bit;
8072
8073 from = (rel->r_offset
8074 + input_section->output_offset
8075 + input_section->output_section->vma);
8076
8077 /* Invert 'y' bit if not the default. */
8078 if ((bfd_signed_vma) (relocation + rel->r_addend - from) < 0)
8079 insn ^= BRANCH_PREDICT_BIT;
8080
8081 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
8082 break;
8083 }
8084 }
8085
8086 if (ELIMINATE_COPY_RELOCS
8087 && h != NULL
8088 && !h->def_regular
8089 && h->protected_def
8090 && ppc_elf_hash_entry (h)->has_addr16_ha
8091 && ppc_elf_hash_entry (h)->has_addr16_lo
8092 && htab->params->pic_fixup > 0)
8093 {
8094 /* Convert lis;addi or lis;load/store accessing a protected
8095 variable defined in a shared library to PIC. */
8096 unsigned int insn;
8097
8098 if (r_type == R_PPC_ADDR16_HA)
8099 {
8100 insn = bfd_get_32 (input_bfd,
8101 contents + rel->r_offset - d_offset);
8102 if ((insn & (0x3f << 26)) == (15u << 26)
8103 && (insn & (0x1f << 16)) == 0 /* lis */)
8104 {
8105 bfd_byte *p;
8106 bfd_vma off;
8107 bfd_vma got_addr;
8108
8109 p = (contents + input_section->size
8110 - relax_info->workaround_size
8111 - relax_info->picfixup_size
8112 + picfixup_size);
8113 off = (p - contents) - (rel->r_offset - d_offset);
8114 if (off > 0x1fffffc || (off & 3) != 0)
8115 info->callbacks->einfo
8116 (_("%H: fixup branch overflow\n"),
8117 input_bfd, input_section, rel->r_offset);
8118
8119 bfd_put_32 (input_bfd, B | off,
8120 contents + rel->r_offset - d_offset);
8121 got_addr = (htab->elf.sgot->output_section->vma
8122 + htab->elf.sgot->output_offset
8123 + (h->got.offset & ~1));
8124 wrel->r_offset = (p - contents) + d_offset;
8125 wrel->r_info = ELF32_R_INFO (0, R_PPC_ADDR16_HA);
8126 wrel->r_addend = got_addr;
8127 insn &= ~0xffff;
8128 insn |= ((unsigned int) (got_addr + 0x8000) >> 16) & 0xffff;
8129 bfd_put_32 (input_bfd, insn, p);
8130
8131 /* Convert lis to lwz, loading address from GOT. */
8132 insn &= ~0xffff;
8133 insn ^= (32u ^ 15u) << 26;
8134 insn |= (insn & (0x1f << 21)) >> 5;
8135 insn |= got_addr & 0xffff;
8136 bfd_put_32 (input_bfd, insn, p + 4);
8137
8138 bfd_put_32 (input_bfd, B | ((-4 - off) & 0x3ffffff), p + 8);
8139 picfixup_size += 12;
8140
8141 /* Use one of the spare relocs, so --emit-relocs
8142 output is reasonable. */
8143 memmove (rel + 1, rel, (relend - rel - 1) * sizeof (*rel));
8144 wrel++, rel++;
8145 rel->r_offset = wrel[-1].r_offset + 4;
8146 rel->r_info = ELF32_R_INFO (0, R_PPC_ADDR16_LO);
8147 rel->r_addend = wrel[-1].r_addend;
8148
8149 /* Continue on as if we had a got reloc, to output
8150 dynamic reloc. */
8151 r_type = R_PPC_GOT16_LO;
8152 }
8153 else
8154 _bfd_error_handler
8155 /* xgettext:c-format */
8156 (_("%B(%A+%#Lx): error: %s with unexpected instruction %#x"),
8157 input_bfd, input_section, rel->r_offset,
8158 "R_PPC_ADDR16_HA", insn);
8159 }
8160 else if (r_type == R_PPC_ADDR16_LO)
8161 {
8162 insn = bfd_get_32 (input_bfd,
8163 contents + rel->r_offset - d_offset);
8164 if ((insn & (0x3f << 26)) == 14u << 26 /* addi */
8165 || (insn & (0x3f << 26)) == 32u << 26 /* lwz */
8166 || (insn & (0x3f << 26)) == 34u << 26 /* lbz */
8167 || (insn & (0x3f << 26)) == 36u << 26 /* stw */
8168 || (insn & (0x3f << 26)) == 38u << 26 /* stb */
8169 || (insn & (0x3f << 26)) == 40u << 26 /* lhz */
8170 || (insn & (0x3f << 26)) == 42u << 26 /* lha */
8171 || (insn & (0x3f << 26)) == 44u << 26 /* sth */
8172 || (insn & (0x3f << 26)) == 46u << 26 /* lmw */
8173 || (insn & (0x3f << 26)) == 47u << 26 /* stmw */
8174 || (insn & (0x3f << 26)) == 48u << 26 /* lfs */
8175 || (insn & (0x3f << 26)) == 50u << 26 /* lfd */
8176 || (insn & (0x3f << 26)) == 52u << 26 /* stfs */
8177 || (insn & (0x3f << 26)) == 54u << 26 /* stfd */
8178 || ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
8179 && (insn & 3) != 1)
8180 || ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */
8181 && ((insn & 3) == 0 || (insn & 3) == 3)))
8182 {
8183 /* Arrange to apply the reloc addend, if any. */
8184 relocation = 0;
8185 unresolved_reloc = FALSE;
8186 rel->r_info = ELF32_R_INFO (0, r_type);
8187 }
8188 else
8189 _bfd_error_handler
8190 /* xgettext:c-format */
8191 (_("%B(%A+%#Lx): error: %s with unexpected instruction %#x"),
8192 input_bfd, input_section, rel->r_offset,
8193 "R_PPC_ADDR16_LO", insn);
8194 }
8195 }
8196
8197 ifunc = NULL;
8198 if (!htab->is_vxworks)
8199 {
8200 struct plt_entry *ent;
8201
8202 if (h != NULL)
8203 {
8204 if (h->type == STT_GNU_IFUNC)
8205 ifunc = &h->plt.plist;
8206 }
8207 else if (local_got_offsets != NULL
8208 && ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
8209 {
8210 struct plt_entry **local_plt;
8211
8212 local_plt = (struct plt_entry **) (local_got_offsets
8213 + symtab_hdr->sh_info);
8214 ifunc = local_plt + r_symndx;
8215 }
8216
8217 ent = NULL;
8218 if (ifunc != NULL
8219 && (!bfd_link_pic (info)
8220 || is_branch_reloc (r_type)))
8221 {
8222 addend = 0;
8223 if (r_type == R_PPC_PLTREL24 && bfd_link_pic (info))
8224 addend = rel->r_addend;
8225 ent = find_plt_ent (ifunc, got2, addend);
8226 }
8227 if (ent != NULL)
8228 {
8229 if (bfd_link_pic (info)
8230 && ent->sec != got2
8231 && htab->plt_type != PLT_NEW
8232 && (!htab->elf.dynamic_sections_created
8233 || h == NULL
8234 || h->dynindx == -1))
8235 {
8236 /* Uh oh, we are going to create a pic glink stub
8237 for an ifunc (here for h == NULL and later in
8238 finish_dynamic_symbol for h != NULL), and
8239 apparently are using code compiled with
8240 -mbss-plt. The difficulty is that -mbss-plt code
8241 gives no indication via a magic PLTREL24 addend
8242 whether r30 is equal to _GLOBAL_OFFSET_TABLE_ or
8243 is pointing into a .got2 section (and how far
8244 into .got2). */
8245 info->callbacks->einfo
8246 /* xgettext:c-format */
8247 (_("%X%H: unsupported bss-plt -fPIC ifunc %s\n"),
8248 input_bfd, input_section, rel->r_offset, sym_name);
8249 }
8250 if (h == NULL && (ent->plt.offset & 1) == 0)
8251 {
8252 Elf_Internal_Rela rela;
8253 bfd_byte *loc;
8254
8255 rela.r_offset = (htab->elf.iplt->output_section->vma
8256 + htab->elf.iplt->output_offset
8257 + ent->plt.offset);
8258 rela.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
8259 rela.r_addend = relocation;
8260 loc = htab->elf.irelplt->contents;
8261 loc += (htab->elf.irelplt->reloc_count++
8262 * sizeof (Elf32_External_Rela));
8263 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
8264 htab->local_ifunc_resolver = 1;
8265
8266 ent->plt.offset |= 1;
8267 }
8268 if (h == NULL && (ent->glink_offset & 1) == 0)
8269 {
8270 unsigned char *p = ((unsigned char *) htab->glink->contents
8271 + ent->glink_offset);
8272 write_glink_stub (ent, htab->elf.iplt, p, info);
8273 ent->glink_offset |= 1;
8274 }
8275
8276 unresolved_reloc = FALSE;
8277 if (htab->plt_type == PLT_NEW
8278 || !htab->elf.dynamic_sections_created
8279 || h == NULL
8280 || h->dynindx == -1)
8281 relocation = (htab->glink->output_section->vma
8282 + htab->glink->output_offset
8283 + (ent->glink_offset & ~1));
8284 else
8285 relocation = (htab->elf.splt->output_section->vma
8286 + htab->elf.splt->output_offset
8287 + ent->plt.offset);
8288 }
8289 }
8290
8291 addend = rel->r_addend;
8292 howto = NULL;
8293 if (r_type < R_PPC_max)
8294 howto = ppc_elf_howto_table[r_type];
8295
8296 switch (r_type)
8297 {
8298 default:
8299 break;
8300
8301 case R_PPC_TPREL16_HA:
8302 if (htab->do_tls_opt && relocation + addend + 0x8000 < 0x10000)
8303 {
8304 bfd_byte *p = contents + (rel->r_offset & ~3);
8305 unsigned int insn = bfd_get_32 (input_bfd, p);
8306 if ((insn & ((0x3f << 26) | 0x1f << 16))
8307 != ((15u << 26) | (2 << 16)) /* addis rt,2,imm */)
8308 /* xgettext:c-format */
8309 info->callbacks->minfo
8310 (_("%H: warning: %s unexpected insn %#x.\n"),
8311 input_bfd, input_section, rel->r_offset, howto->name, insn);
8312 else
8313 bfd_put_32 (input_bfd, NOP, p);
8314 }
8315 break;
8316
8317 case R_PPC_TPREL16_LO:
8318 if (htab->do_tls_opt && relocation + addend + 0x8000 < 0x10000)
8319 {
8320 bfd_byte *p = contents + (rel->r_offset & ~3);
8321 unsigned int insn = bfd_get_32 (input_bfd, p);
8322 insn &= ~(0x1f << 16);
8323 insn |= 2 << 16;
8324 bfd_put_32 (input_bfd, insn, p);
8325 }
8326 break;
8327 }
8328
8329 tls_type = 0;
8330 switch (r_type)
8331 {
8332 default:
8333 info->callbacks->einfo
8334 /* xgettext:c-format */
8335 (_("%P: %B: unknown relocation type %d for symbol %s\n"),
8336 input_bfd, (int) r_type, sym_name);
8337
8338 bfd_set_error (bfd_error_bad_value);
8339 ret = FALSE;
8340 goto copy_reloc;
8341
8342 case R_PPC_NONE:
8343 case R_PPC_TLS:
8344 case R_PPC_TLSGD:
8345 case R_PPC_TLSLD:
8346 case R_PPC_EMB_MRKREF:
8347 case R_PPC_GNU_VTINHERIT:
8348 case R_PPC_GNU_VTENTRY:
8349 goto copy_reloc;
8350
8351 /* GOT16 relocations. Like an ADDR16 using the symbol's
8352 address in the GOT as relocation value instead of the
8353 symbol's value itself. Also, create a GOT entry for the
8354 symbol and put the symbol value there. */
8355 case R_PPC_GOT_TLSGD16:
8356 case R_PPC_GOT_TLSGD16_LO:
8357 case R_PPC_GOT_TLSGD16_HI:
8358 case R_PPC_GOT_TLSGD16_HA:
8359 tls_type = TLS_TLS | TLS_GD;
8360 goto dogot;
8361
8362 case R_PPC_GOT_TLSLD16:
8363 case R_PPC_GOT_TLSLD16_LO:
8364 case R_PPC_GOT_TLSLD16_HI:
8365 case R_PPC_GOT_TLSLD16_HA:
8366 tls_type = TLS_TLS | TLS_LD;
8367 goto dogot;
8368
8369 case R_PPC_GOT_TPREL16:
8370 case R_PPC_GOT_TPREL16_LO:
8371 case R_PPC_GOT_TPREL16_HI:
8372 case R_PPC_GOT_TPREL16_HA:
8373 tls_type = TLS_TLS | TLS_TPREL;
8374 goto dogot;
8375
8376 case R_PPC_GOT_DTPREL16:
8377 case R_PPC_GOT_DTPREL16_LO:
8378 case R_PPC_GOT_DTPREL16_HI:
8379 case R_PPC_GOT_DTPREL16_HA:
8380 tls_type = TLS_TLS | TLS_DTPREL;
8381 goto dogot;
8382
8383 case R_PPC_GOT16:
8384 case R_PPC_GOT16_LO:
8385 case R_PPC_GOT16_HI:
8386 case R_PPC_GOT16_HA:
8387 tls_mask = 0;
8388 dogot:
8389 {
8390 /* Relocation is to the entry for this symbol in the global
8391 offset table. */
8392 bfd_vma off;
8393 bfd_vma *offp;
8394 unsigned long indx;
8395
8396 if (htab->elf.sgot == NULL)
8397 abort ();
8398
8399 indx = 0;
8400 if (tls_type == (TLS_TLS | TLS_LD)
8401 && (h == NULL
8402 || !h->def_dynamic))
8403 offp = &htab->tlsld_got.offset;
8404 else if (h != NULL)
8405 {
8406 if (!htab->elf.dynamic_sections_created
8407 || h->dynindx == -1
8408 || SYMBOL_REFERENCES_LOCAL (info, h)
8409 || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h))
8410 /* This is actually a static link, or it is a
8411 -Bsymbolic link and the symbol is defined
8412 locally, or the symbol was forced to be local
8413 because of a version file. */
8414 ;
8415 else
8416 {
8417 indx = h->dynindx;
8418 unresolved_reloc = FALSE;
8419 }
8420 offp = &h->got.offset;
8421 }
8422 else
8423 {
8424 if (local_got_offsets == NULL)
8425 abort ();
8426 offp = &local_got_offsets[r_symndx];
8427 }
8428
8429 /* The offset must always be a multiple of 4. We use the
8430 least significant bit to record whether we have already
8431 processed this entry. */
8432 off = *offp;
8433 if ((off & 1) != 0)
8434 off &= ~1;
8435 else
8436 {
8437 unsigned int tls_m = (tls_mask
8438 & (TLS_LD | TLS_GD | TLS_DTPREL
8439 | TLS_TPREL | TLS_TPRELGD));
8440
8441 if (offp == &htab->tlsld_got.offset)
8442 tls_m = TLS_LD;
8443 else if (h == NULL
8444 || !h->def_dynamic)
8445 tls_m &= ~TLS_LD;
8446
8447 /* We might have multiple got entries for this sym.
8448 Initialize them all. */
8449 do
8450 {
8451 int tls_ty = 0;
8452
8453 if ((tls_m & TLS_LD) != 0)
8454 {
8455 tls_ty = TLS_TLS | TLS_LD;
8456 tls_m &= ~TLS_LD;
8457 }
8458 else if ((tls_m & TLS_GD) != 0)
8459 {
8460 tls_ty = TLS_TLS | TLS_GD;
8461 tls_m &= ~TLS_GD;
8462 }
8463 else if ((tls_m & TLS_DTPREL) != 0)
8464 {
8465 tls_ty = TLS_TLS | TLS_DTPREL;
8466 tls_m &= ~TLS_DTPREL;
8467 }
8468 else if ((tls_m & (TLS_TPREL | TLS_TPRELGD)) != 0)
8469 {
8470 tls_ty = TLS_TLS | TLS_TPREL;
8471 tls_m = 0;
8472 }
8473
8474 /* Generate relocs for the dynamic linker. */
8475 if (indx != 0
8476 || (bfd_link_pic (info)
8477 && (h == NULL
8478 || !UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)
8479 || offp == &htab->tlsld_got.offset)
8480 && !(tls_ty == (TLS_TLS | TLS_TPREL)
8481 && bfd_link_executable (info)
8482 && SYMBOL_REFERENCES_LOCAL (info, h))))
8483 {
8484 asection *rsec = htab->elf.srelgot;
8485 bfd_byte * loc;
8486
8487 if (ifunc != NULL)
8488 {
8489 rsec = htab->elf.irelplt;
8490 if (indx == 0)
8491 htab->local_ifunc_resolver = 1;
8492 else if (is_static_defined (h))
8493 htab->maybe_local_ifunc_resolver = 1;
8494 }
8495 outrel.r_offset = (htab->elf.sgot->output_section->vma
8496 + htab->elf.sgot->output_offset
8497 + off);
8498 outrel.r_addend = 0;
8499 if (tls_ty & (TLS_LD | TLS_GD))
8500 {
8501 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPMOD32);
8502 if (tls_ty == (TLS_TLS | TLS_GD))
8503 {
8504 loc = rsec->contents;
8505 loc += (rsec->reloc_count++
8506 * sizeof (Elf32_External_Rela));
8507 bfd_elf32_swap_reloca_out (output_bfd,
8508 &outrel, loc);
8509 outrel.r_offset += 4;
8510 outrel.r_info
8511 = ELF32_R_INFO (indx, R_PPC_DTPREL32);
8512 }
8513 }
8514 else if (tls_ty == (TLS_TLS | TLS_DTPREL))
8515 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPREL32);
8516 else if (tls_ty == (TLS_TLS | TLS_TPREL))
8517 outrel.r_info = ELF32_R_INFO (indx, R_PPC_TPREL32);
8518 else if (indx != 0)
8519 outrel.r_info = ELF32_R_INFO (indx, R_PPC_GLOB_DAT);
8520 else if (ifunc != NULL)
8521 outrel.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
8522 else
8523 outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
8524 if (indx == 0 && tls_ty != (TLS_TLS | TLS_LD))
8525 {
8526 outrel.r_addend += relocation;
8527 if (tls_ty & (TLS_GD | TLS_DTPREL | TLS_TPREL))
8528 {
8529 if (htab->elf.tls_sec == NULL)
8530 outrel.r_addend = 0;
8531 else
8532 outrel.r_addend -= htab->elf.tls_sec->vma;
8533 }
8534 }
8535 loc = rsec->contents;
8536 loc += (rsec->reloc_count++
8537 * sizeof (Elf32_External_Rela));
8538 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
8539 }
8540
8541 /* Init the .got section contents if we're not
8542 emitting a reloc. */
8543 else
8544 {
8545 bfd_vma value = relocation;
8546
8547 if (tls_ty != 0)
8548 {
8549 if (htab->elf.tls_sec == NULL)
8550 value = 0;
8551 else
8552 {
8553 if (tls_ty & TLS_LD)
8554 value = 0;
8555 else
8556 value -= htab->elf.tls_sec->vma + DTP_OFFSET;
8557 if (tls_ty & TLS_TPREL)
8558 value += DTP_OFFSET - TP_OFFSET;
8559 }
8560
8561 if (tls_ty & (TLS_LD | TLS_GD))
8562 {
8563 bfd_put_32 (input_bfd, value,
8564 htab->elf.sgot->contents + off + 4);
8565 value = 1;
8566 }
8567 }
8568 bfd_put_32 (input_bfd, value,
8569 htab->elf.sgot->contents + off);
8570 }
8571
8572 off += 4;
8573 if (tls_ty & (TLS_LD | TLS_GD))
8574 off += 4;
8575 }
8576 while (tls_m != 0);
8577
8578 off = *offp;
8579 *offp = off | 1;
8580 }
8581
8582 if (off >= (bfd_vma) -2)
8583 abort ();
8584
8585 if ((tls_type & TLS_TLS) != 0)
8586 {
8587 if (tls_type != (TLS_TLS | TLS_LD))
8588 {
8589 if ((tls_mask & TLS_LD) != 0
8590 && !(h == NULL
8591 || !h->def_dynamic))
8592 off += 8;
8593 if (tls_type != (TLS_TLS | TLS_GD))
8594 {
8595 if ((tls_mask & TLS_GD) != 0)
8596 off += 8;
8597 if (tls_type != (TLS_TLS | TLS_DTPREL))
8598 {
8599 if ((tls_mask & TLS_DTPREL) != 0)
8600 off += 4;
8601 }
8602 }
8603 }
8604 }
8605
8606 /* If here for a picfixup, we're done. */
8607 if (r_type != ELF32_R_TYPE (rel->r_info))
8608 goto copy_reloc;
8609
8610 relocation = (htab->elf.sgot->output_section->vma
8611 + htab->elf.sgot->output_offset
8612 + off
8613 - SYM_VAL (htab->elf.hgot));
8614
8615 /* Addends on got relocations don't make much sense.
8616 x+off@got is actually x@got+off, and since the got is
8617 generated by a hash table traversal, the value in the
8618 got at entry m+n bears little relation to the entry m. */
8619 if (addend != 0)
8620 info->callbacks->einfo
8621 /* xgettext:c-format */
8622 (_("%H: non-zero addend on %s reloc against `%s'\n"),
8623 input_bfd, input_section, rel->r_offset,
8624 howto->name,
8625 sym_name);
8626 }
8627 break;
8628
8629 /* Relocations that need no special processing. */
8630 case R_PPC_LOCAL24PC:
8631 /* It makes no sense to point a local relocation
8632 at a symbol not in this object. */
8633 if (unresolved_reloc)
8634 {
8635 (*info->callbacks->undefined_symbol) (info,
8636 h->root.root.string,
8637 input_bfd,
8638 input_section,
8639 rel->r_offset,
8640 TRUE);
8641 goto copy_reloc;
8642 }
8643 if (h != NULL && h->type == STT_GNU_IFUNC && bfd_link_pic (info))
8644 {
8645 /* @local on an ifunc does not really make sense since
8646 the ifunc resolver can take you anywhere. More
8647 seriously, calls to ifuncs must go through a plt call
8648 stub, and for pic the plt call stubs uses r30 to
8649 access the PLT. The problem is that a call that is
8650 local won't have the +32k reloc addend trick marking
8651 -fPIC code, so the linker won't know whether r30 is
8652 _GLOBAL_OFFSET_TABLE_ or pointing into a .got2 section. */
8653 /* xgettext:c-format */
8654 info->callbacks->einfo (_("%X%H: @local call to ifunc %s\n"),
8655 input_bfd, input_section, rel->r_offset,
8656 h->root.root.string);
8657 }
8658 break;
8659
8660 case R_PPC_DTPREL16:
8661 case R_PPC_DTPREL16_LO:
8662 case R_PPC_DTPREL16_HI:
8663 case R_PPC_DTPREL16_HA:
8664 if (htab->elf.tls_sec != NULL)
8665 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
8666 break;
8667
8668 /* Relocations that may need to be propagated if this is a shared
8669 object. */
8670 case R_PPC_TPREL16:
8671 case R_PPC_TPREL16_LO:
8672 case R_PPC_TPREL16_HI:
8673 case R_PPC_TPREL16_HA:
8674 if (h != NULL
8675 && h->root.type == bfd_link_hash_undefweak
8676 && h->dynindx == -1)
8677 {
8678 /* Make this relocation against an undefined weak symbol
8679 resolve to zero. This is really just a tweak, since
8680 code using weak externs ought to check that they are
8681 defined before using them. */
8682 bfd_byte *p = contents + rel->r_offset - d_offset;
8683 unsigned int insn = bfd_get_32 (input_bfd, p);
8684 insn = _bfd_elf_ppc_at_tprel_transform (insn, 2);
8685 if (insn != 0)
8686 bfd_put_32 (input_bfd, insn, p);
8687 break;
8688 }
8689 if (htab->elf.tls_sec != NULL)
8690 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
8691 /* The TPREL16 relocs shouldn't really be used in shared
8692 libs or with non-local symbols as that will result in
8693 DT_TEXTREL being set, but support them anyway. */
8694 goto dodyn;
8695
8696 case R_PPC_TPREL32:
8697 if (htab->elf.tls_sec != NULL)
8698 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
8699 goto dodyn;
8700
8701 case R_PPC_DTPREL32:
8702 if (htab->elf.tls_sec != NULL)
8703 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
8704 goto dodyn;
8705
8706 case R_PPC_DTPMOD32:
8707 relocation = 1;
8708 addend = 0;
8709 goto dodyn;
8710
8711 case R_PPC_REL16:
8712 case R_PPC_REL16_LO:
8713 case R_PPC_REL16_HI:
8714 case R_PPC_REL16_HA:
8715 case R_PPC_REL16DX_HA:
8716 break;
8717
8718 case R_PPC_REL32:
8719 if (h == NULL || h == htab->elf.hgot)
8720 break;
8721 /* fall through */
8722
8723 case R_PPC_ADDR32:
8724 case R_PPC_ADDR16:
8725 case R_PPC_ADDR16_LO:
8726 case R_PPC_ADDR16_HI:
8727 case R_PPC_ADDR16_HA:
8728 case R_PPC_UADDR32:
8729 case R_PPC_UADDR16:
8730 goto dodyn;
8731
8732 case R_PPC_VLE_REL8:
8733 case R_PPC_VLE_REL15:
8734 case R_PPC_VLE_REL24:
8735 case R_PPC_REL24:
8736 case R_PPC_REL14:
8737 case R_PPC_REL14_BRTAKEN:
8738 case R_PPC_REL14_BRNTAKEN:
8739 /* If these relocations are not to a named symbol, they can be
8740 handled right here, no need to bother the dynamic linker. */
8741 if (SYMBOL_CALLS_LOCAL (info, h)
8742 || h == htab->elf.hgot)
8743 break;
8744 /* fall through */
8745
8746 case R_PPC_ADDR24:
8747 case R_PPC_ADDR14:
8748 case R_PPC_ADDR14_BRTAKEN:
8749 case R_PPC_ADDR14_BRNTAKEN:
8750 if (h != NULL && !bfd_link_pic (info))
8751 break;
8752 /* fall through */
8753
8754 dodyn:
8755 if ((input_section->flags & SEC_ALLOC) == 0
8756 || is_vxworks_tls)
8757 break;
8758
8759 if ((bfd_link_pic (info)
8760 && !(h != NULL
8761 && ((h->root.type == bfd_link_hash_undefined
8762 && ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
8763 || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)))
8764 && (must_be_dyn_reloc (info, r_type)
8765 || !SYMBOL_CALLS_LOCAL (info, h)))
8766 || (ELIMINATE_COPY_RELOCS
8767 && !bfd_link_pic (info)
8768 && h != NULL
8769 && h->non_got_ref))
8770 {
8771 int skip;
8772 bfd_byte *loc;
8773 asection *sreloc;
8774 long indx = 0;
8775
8776 #ifdef DEBUG
8777 fprintf (stderr, "ppc_elf_relocate_section needs to "
8778 "create relocation for %s\n",
8779 (h && h->root.root.string
8780 ? h->root.root.string : "<unknown>"));
8781 #endif
8782
8783 /* When generating a shared object, these relocations
8784 are copied into the output file to be resolved at run
8785 time. */
8786 skip = 0;
8787 outrel.r_offset = _bfd_elf_section_offset (output_bfd, info,
8788 input_section,
8789 rel->r_offset);
8790 if (outrel.r_offset == (bfd_vma) -1
8791 || outrel.r_offset == (bfd_vma) -2)
8792 skip = (int) outrel.r_offset;
8793 outrel.r_offset += (input_section->output_section->vma
8794 + input_section->output_offset);
8795
8796 if (skip)
8797 memset (&outrel, 0, sizeof outrel);
8798 else if (!SYMBOL_REFERENCES_LOCAL (info, h))
8799 {
8800 indx = h->dynindx;
8801 BFD_ASSERT (indx != -1);
8802 unresolved_reloc = FALSE;
8803 outrel.r_info = ELF32_R_INFO (indx, r_type);
8804 outrel.r_addend = rel->r_addend;
8805 }
8806 else
8807 {
8808 outrel.r_addend = relocation + rel->r_addend;
8809
8810 if (r_type != R_PPC_ADDR32)
8811 {
8812 if (ifunc != NULL)
8813 {
8814 /* If we get here when building a static
8815 executable, then the libc startup function
8816 responsible for applying indirect function
8817 relocations is going to complain about
8818 the reloc type.
8819 If we get here when building a dynamic
8820 executable, it will be because we have
8821 a text relocation. The dynamic loader
8822 will set the text segment writable and
8823 non-executable to apply text relocations.
8824 So we'll segfault when trying to run the
8825 indirection function to resolve the reloc. */
8826 info->callbacks->einfo
8827 /* xgettext:c-format */
8828 (_("%H: relocation %s for indirect "
8829 "function %s unsupported\n"),
8830 input_bfd, input_section, rel->r_offset,
8831 howto->name,
8832 sym_name);
8833 ret = FALSE;
8834 }
8835 else if (r_symndx == STN_UNDEF || bfd_is_abs_section (sec))
8836 ;
8837 else if (sec == NULL || sec->owner == NULL)
8838 {
8839 bfd_set_error (bfd_error_bad_value);
8840 ret = FALSE;
8841 }
8842 else
8843 {
8844 asection *osec;
8845
8846 /* We are turning this relocation into one
8847 against a section symbol. It would be
8848 proper to subtract the symbol's value,
8849 osec->vma, from the emitted reloc addend,
8850 but ld.so expects buggy relocs.
8851 FIXME: Why not always use a zero index? */
8852 osec = sec->output_section;
8853 indx = elf_section_data (osec)->dynindx;
8854 if (indx == 0)
8855 {
8856 osec = htab->elf.text_index_section;
8857 indx = elf_section_data (osec)->dynindx;
8858 }
8859 BFD_ASSERT (indx != 0);
8860 #ifdef DEBUG
8861 if (indx == 0)
8862 printf ("indx=%ld section=%s flags=%08x name=%s\n",
8863 indx, osec->name, osec->flags,
8864 h->root.root.string);
8865 #endif
8866 }
8867
8868 outrel.r_info = ELF32_R_INFO (indx, r_type);
8869 }
8870 else if (ifunc != NULL)
8871 outrel.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
8872 else
8873 outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
8874 }
8875
8876 sreloc = elf_section_data (input_section)->sreloc;
8877 if (ifunc)
8878 {
8879 sreloc = htab->elf.irelplt;
8880 if (indx == 0)
8881 htab->local_ifunc_resolver = 1;
8882 else if (is_static_defined (h))
8883 htab->maybe_local_ifunc_resolver = 1;
8884 }
8885 if (sreloc == NULL)
8886 return FALSE;
8887
8888 loc = sreloc->contents;
8889 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
8890 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
8891
8892 if (skip == -1)
8893 goto copy_reloc;
8894
8895 /* This reloc will be computed at runtime. Clear the memory
8896 so that it contains a predictable value for prelink. */
8897 if (!skip)
8898 {
8899 relocation = howto->pc_relative ? outrel.r_offset : 0;
8900 addend = 0;
8901 break;
8902 }
8903 }
8904 break;
8905
8906 case R_PPC_RELAX_PLT:
8907 case R_PPC_RELAX_PLTREL24:
8908 if (h != NULL)
8909 {
8910 struct plt_entry *ent;
8911 bfd_vma got2_addend = 0;
8912
8913 if (r_type == R_PPC_RELAX_PLTREL24)
8914 {
8915 if (bfd_link_pic (info))
8916 got2_addend = addend;
8917 addend = 0;
8918 }
8919 ent = find_plt_ent (&h->plt.plist, got2, got2_addend);
8920 if (htab->plt_type == PLT_NEW)
8921 relocation = (htab->glink->output_section->vma
8922 + htab->glink->output_offset
8923 + ent->glink_offset);
8924 else
8925 relocation = (htab->elf.splt->output_section->vma
8926 + htab->elf.splt->output_offset
8927 + ent->plt.offset);
8928 }
8929 /* Fall through. */
8930
8931 case R_PPC_RELAX:
8932 {
8933 const int *stub;
8934 size_t size;
8935 size_t insn_offset = rel->r_offset;
8936 unsigned int insn;
8937
8938 if (bfd_link_pic (info))
8939 {
8940 relocation -= (input_section->output_section->vma
8941 + input_section->output_offset
8942 + rel->r_offset - 4);
8943 stub = shared_stub_entry;
8944 bfd_put_32 (input_bfd, stub[0], contents + insn_offset - 12);
8945 bfd_put_32 (input_bfd, stub[1], contents + insn_offset - 8);
8946 bfd_put_32 (input_bfd, stub[2], contents + insn_offset - 4);
8947 stub += 3;
8948 size = ARRAY_SIZE (shared_stub_entry) - 3;
8949 }
8950 else
8951 {
8952 stub = stub_entry;
8953 size = ARRAY_SIZE (stub_entry);
8954 }
8955
8956 relocation += addend;
8957 if (bfd_link_relocatable (info))
8958 relocation = 0;
8959
8960 /* First insn is HA, second is LO. */
8961 insn = *stub++;
8962 insn |= ((relocation + 0x8000) >> 16) & 0xffff;
8963 bfd_put_32 (input_bfd, insn, contents + insn_offset);
8964 insn_offset += 4;
8965
8966 insn = *stub++;
8967 insn |= relocation & 0xffff;
8968 bfd_put_32 (input_bfd, insn, contents + insn_offset);
8969 insn_offset += 4;
8970 size -= 2;
8971
8972 while (size != 0)
8973 {
8974 insn = *stub++;
8975 --size;
8976 bfd_put_32 (input_bfd, insn, contents + insn_offset);
8977 insn_offset += 4;
8978 }
8979
8980 /* Rewrite the reloc and convert one of the trailing nop
8981 relocs to describe this relocation. */
8982 BFD_ASSERT (ELF32_R_TYPE (relend[-1].r_info) == R_PPC_NONE);
8983 /* The relocs are at the bottom 2 bytes */
8984 wrel->r_offset = rel->r_offset + d_offset;
8985 wrel->r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_HA);
8986 wrel->r_addend = rel->r_addend;
8987 memmove (wrel + 1, wrel, (relend - wrel - 1) * sizeof (*wrel));
8988 wrel++, rel++;
8989 wrel->r_offset += 4;
8990 wrel->r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_LO);
8991 }
8992 continue;
8993
8994 /* Indirect .sdata relocation. */
8995 case R_PPC_EMB_SDAI16:
8996 BFD_ASSERT (htab->sdata[0].section != NULL);
8997 if (!is_static_defined (htab->sdata[0].sym))
8998 {
8999 unresolved_reloc = TRUE;
9000 break;
9001 }
9002 relocation
9003 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[0],
9004 h, relocation, rel);
9005 addend = 0;
9006 break;
9007
9008 /* Indirect .sdata2 relocation. */
9009 case R_PPC_EMB_SDA2I16:
9010 BFD_ASSERT (htab->sdata[1].section != NULL);
9011 if (!is_static_defined (htab->sdata[1].sym))
9012 {
9013 unresolved_reloc = TRUE;
9014 break;
9015 }
9016 relocation
9017 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[1],
9018 h, relocation, rel);
9019 addend = 0;
9020 break;
9021
9022 /* Handle the TOC16 reloc. We want to use the offset within the .got
9023 section, not the actual VMA. This is appropriate when generating
9024 an embedded ELF object, for which the .got section acts like the
9025 AIX .toc section. */
9026 case R_PPC_TOC16: /* phony GOT16 relocations */
9027 if (sec == NULL || sec->output_section == NULL)
9028 {
9029 unresolved_reloc = TRUE;
9030 break;
9031 }
9032 BFD_ASSERT (strcmp (bfd_get_section_name (sec->owner, sec),
9033 ".got") == 0
9034 || strcmp (bfd_get_section_name (sec->owner, sec),
9035 ".cgot") == 0);
9036
9037 addend -= sec->output_section->vma + sec->output_offset + 0x8000;
9038 break;
9039
9040 case R_PPC_PLTREL24:
9041 if (h != NULL && ifunc == NULL)
9042 {
9043 struct plt_entry *ent;
9044
9045 ent = find_plt_ent (&h->plt.plist, got2,
9046 bfd_link_pic (info) ? addend : 0);
9047 if (ent == NULL
9048 || htab->elf.splt == NULL)
9049 {
9050 /* We didn't make a PLT entry for this symbol. This
9051 happens when statically linking PIC code, or when
9052 using -Bsymbolic. */
9053 }
9054 else
9055 {
9056 /* Relocation is to the entry for this symbol in the
9057 procedure linkage table. */
9058 unresolved_reloc = FALSE;
9059 if (htab->plt_type == PLT_NEW)
9060 relocation = (htab->glink->output_section->vma
9061 + htab->glink->output_offset
9062 + ent->glink_offset);
9063 else
9064 relocation = (htab->elf.splt->output_section->vma
9065 + htab->elf.splt->output_offset
9066 + ent->plt.offset);
9067 }
9068 }
9069
9070 /* R_PPC_PLTREL24 is rather special. If non-zero, the
9071 addend specifies the GOT pointer offset within .got2.
9072 Don't apply it to the relocation field. */
9073 addend = 0;
9074 break;
9075
9076 /* Relocate against _SDA_BASE_. */
9077 case R_PPC_SDAREL16:
9078 {
9079 const char *name;
9080 struct elf_link_hash_entry *sda = htab->sdata[0].sym;
9081
9082 if (sec == NULL
9083 || sec->output_section == NULL
9084 || !is_static_defined (sda))
9085 {
9086 unresolved_reloc = TRUE;
9087 break;
9088 }
9089 addend -= SYM_VAL (sda);
9090
9091 name = bfd_get_section_name (output_bfd, sec->output_section);
9092 if (!(strcmp (name, ".sdata") == 0
9093 || strcmp (name, ".sbss") == 0))
9094 {
9095 info->callbacks->einfo
9096 /* xgettext:c-format */
9097 (_("%P: %B: the target (%s) of a %s relocation is "
9098 "in the wrong output section (%s)\n"),
9099 input_bfd,
9100 sym_name,
9101 howto->name,
9102 name);
9103 }
9104 }
9105 break;
9106
9107 /* Relocate against _SDA2_BASE_. */
9108 case R_PPC_EMB_SDA2REL:
9109 {
9110 const char *name;
9111 struct elf_link_hash_entry *sda = htab->sdata[1].sym;
9112
9113 if (sec == NULL
9114 || sec->output_section == NULL
9115 || !is_static_defined (sda))
9116 {
9117 unresolved_reloc = TRUE;
9118 break;
9119 }
9120 addend -= SYM_VAL (sda);
9121
9122 name = bfd_get_section_name (output_bfd, sec->output_section);
9123 if (!(strcmp (name, ".sdata2") == 0
9124 || strcmp (name, ".sbss2") == 0))
9125 {
9126 info->callbacks->einfo
9127 /* xgettext:c-format */
9128 (_("%P: %B: the target (%s) of a %s relocation is "
9129 "in the wrong output section (%s)\n"),
9130 input_bfd,
9131 sym_name,
9132 howto->name,
9133 name);
9134 }
9135 }
9136 break;
9137
9138 case R_PPC_VLE_LO16A:
9139 relocation = relocation + addend;
9140 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9141 contents + rel->r_offset, relocation,
9142 split16a_type, htab->params->vle_reloc_fixup);
9143 goto copy_reloc;
9144
9145 case R_PPC_VLE_LO16D:
9146 relocation = relocation + addend;
9147 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9148 contents + rel->r_offset, relocation,
9149 split16d_type, htab->params->vle_reloc_fixup);
9150 goto copy_reloc;
9151
9152 case R_PPC_VLE_HI16A:
9153 relocation = (relocation + addend) >> 16;
9154 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9155 contents + rel->r_offset, relocation,
9156 split16a_type, htab->params->vle_reloc_fixup);
9157 goto copy_reloc;
9158
9159 case R_PPC_VLE_HI16D:
9160 relocation = (relocation + addend) >> 16;
9161 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9162 contents + rel->r_offset, relocation,
9163 split16d_type, htab->params->vle_reloc_fixup);
9164 goto copy_reloc;
9165
9166 case R_PPC_VLE_HA16A:
9167 relocation = (relocation + addend + 0x8000) >> 16;
9168 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9169 contents + rel->r_offset, relocation,
9170 split16a_type, htab->params->vle_reloc_fixup);
9171 goto copy_reloc;
9172
9173 case R_PPC_VLE_HA16D:
9174 relocation = (relocation + addend + 0x8000) >> 16;
9175 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9176 contents + rel->r_offset, relocation,
9177 split16d_type, htab->params->vle_reloc_fixup);
9178 goto copy_reloc;
9179
9180 /* Relocate against either _SDA_BASE_, _SDA2_BASE_, or 0. */
9181 case R_PPC_EMB_SDA21:
9182 case R_PPC_VLE_SDA21:
9183 case R_PPC_EMB_RELSDA:
9184 case R_PPC_VLE_SDA21_LO:
9185 {
9186 const char *name;
9187 int reg;
9188 unsigned int insn;
9189 struct elf_link_hash_entry *sda = NULL;
9190
9191 if (sec == NULL || sec->output_section == NULL)
9192 {
9193 unresolved_reloc = TRUE;
9194 break;
9195 }
9196
9197 name = bfd_get_section_name (output_bfd, sec->output_section);
9198 if (strcmp (name, ".sdata") == 0
9199 || strcmp (name, ".sbss") == 0)
9200 {
9201 reg = 13;
9202 sda = htab->sdata[0].sym;
9203 }
9204 else if (strcmp (name, ".sdata2") == 0
9205 || strcmp (name, ".sbss2") == 0)
9206 {
9207 reg = 2;
9208 sda = htab->sdata[1].sym;
9209 }
9210 else if (strcmp (name, ".PPC.EMB.sdata0") == 0
9211 || strcmp (name, ".PPC.EMB.sbss0") == 0)
9212 {
9213 reg = 0;
9214 }
9215 else
9216 {
9217 info->callbacks->einfo
9218 /* xgettext:c-format */
9219 (_("%P: %B: the target (%s) of a %s relocation is "
9220 "in the wrong output section (%s)\n"),
9221 input_bfd,
9222 sym_name,
9223 howto->name,
9224 name);
9225
9226 bfd_set_error (bfd_error_bad_value);
9227 ret = FALSE;
9228 goto copy_reloc;
9229 }
9230
9231 if (sda != NULL)
9232 {
9233 if (!is_static_defined (sda))
9234 {
9235 unresolved_reloc = TRUE;
9236 break;
9237 }
9238 addend -= SYM_VAL (sda);
9239 }
9240
9241 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
9242 if (reg == 0
9243 && (r_type == R_PPC_VLE_SDA21
9244 || r_type == R_PPC_VLE_SDA21_LO))
9245 {
9246 relocation = relocation + addend;
9247 addend = 0;
9248
9249 /* Force e_li insn, keeping RT from original insn. */
9250 insn &= 0x1f << 21;
9251 insn |= 28u << 26;
9252
9253 /* We have an li20 field, bits 17..20, 11..15, 21..31. */
9254 /* Top 4 bits of value to 17..20. */
9255 insn |= (relocation & 0xf0000) >> 5;
9256 /* Next 5 bits of the value to 11..15. */
9257 insn |= (relocation & 0xf800) << 5;
9258 /* And the final 11 bits of the value to bits 21 to 31. */
9259 insn |= relocation & 0x7ff;
9260
9261 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
9262
9263 if (r_type == R_PPC_VLE_SDA21
9264 && ((relocation + 0x80000) & 0xffffffff) > 0x100000)
9265 goto overflow;
9266 goto copy_reloc;
9267 }
9268 else if (r_type == R_PPC_EMB_SDA21
9269 || r_type == R_PPC_VLE_SDA21
9270 || r_type == R_PPC_VLE_SDA21_LO)
9271 {
9272 /* Fill in register field. */
9273 insn = (insn & ~RA_REGISTER_MASK) | (reg << RA_REGISTER_SHIFT);
9274 }
9275 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
9276 }
9277 break;
9278
9279 case R_PPC_VLE_SDAREL_LO16A:
9280 case R_PPC_VLE_SDAREL_LO16D:
9281 case R_PPC_VLE_SDAREL_HI16A:
9282 case R_PPC_VLE_SDAREL_HI16D:
9283 case R_PPC_VLE_SDAREL_HA16A:
9284 case R_PPC_VLE_SDAREL_HA16D:
9285 {
9286 bfd_vma value;
9287 const char *name;
9288 struct elf_link_hash_entry *sda = NULL;
9289
9290 if (sec == NULL || sec->output_section == NULL)
9291 {
9292 unresolved_reloc = TRUE;
9293 break;
9294 }
9295
9296 name = bfd_get_section_name (output_bfd, sec->output_section);
9297 if (strcmp (name, ".sdata") == 0
9298 || strcmp (name, ".sbss") == 0)
9299 sda = htab->sdata[0].sym;
9300 else if (strcmp (name, ".sdata2") == 0
9301 || strcmp (name, ".sbss2") == 0)
9302 sda = htab->sdata[1].sym;
9303 else
9304 {
9305 _bfd_error_handler
9306 /* xgettext:c-format */
9307 (_("%B: the target (%s) of a %s relocation is "
9308 "in the wrong output section (%s)"),
9309 input_bfd,
9310 sym_name,
9311 howto->name,
9312 name);
9313
9314 bfd_set_error (bfd_error_bad_value);
9315 ret = FALSE;
9316 goto copy_reloc;
9317 }
9318
9319 if (sda == NULL || !is_static_defined (sda))
9320 {
9321 unresolved_reloc = TRUE;
9322 break;
9323 }
9324 value = relocation + addend - SYM_VAL (sda);
9325
9326 if (r_type == R_PPC_VLE_SDAREL_LO16A)
9327 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9328 contents + rel->r_offset, value,
9329 split16a_type,
9330 htab->params->vle_reloc_fixup);
9331 else if (r_type == R_PPC_VLE_SDAREL_LO16D)
9332 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9333 contents + rel->r_offset, value,
9334 split16d_type,
9335 htab->params->vle_reloc_fixup);
9336 else if (r_type == R_PPC_VLE_SDAREL_HI16A)
9337 {
9338 value = value >> 16;
9339 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9340 contents + rel->r_offset, value,
9341 split16a_type,
9342 htab->params->vle_reloc_fixup);
9343 }
9344 else if (r_type == R_PPC_VLE_SDAREL_HI16D)
9345 {
9346 value = value >> 16;
9347 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9348 contents + rel->r_offset, value,
9349 split16d_type,
9350 htab->params->vle_reloc_fixup);
9351 }
9352 else if (r_type == R_PPC_VLE_SDAREL_HA16A)
9353 {
9354 value = (value + 0x8000) >> 16;
9355 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9356 contents + rel->r_offset, value,
9357 split16a_type,
9358 htab->params->vle_reloc_fixup);
9359 }
9360 else if (r_type == R_PPC_VLE_SDAREL_HA16D)
9361 {
9362 value = (value + 0x8000) >> 16;
9363 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9364 contents + rel->r_offset, value,
9365 split16d_type,
9366 htab->params->vle_reloc_fixup);
9367 }
9368 }
9369 goto copy_reloc;
9370
9371 case R_PPC_VLE_ADDR20:
9372 ppc_elf_vle_split20 (output_bfd, contents + rel->r_offset, relocation);
9373 continue;
9374
9375 /* Relocate against the beginning of the section. */
9376 case R_PPC_SECTOFF:
9377 case R_PPC_SECTOFF_LO:
9378 case R_PPC_SECTOFF_HI:
9379 case R_PPC_SECTOFF_HA:
9380 if (sec == NULL || sec->output_section == NULL)
9381 {
9382 unresolved_reloc = TRUE;
9383 break;
9384 }
9385 addend -= sec->output_section->vma;
9386 break;
9387
9388 /* Negative relocations. */
9389 case R_PPC_EMB_NADDR32:
9390 case R_PPC_EMB_NADDR16:
9391 case R_PPC_EMB_NADDR16_LO:
9392 case R_PPC_EMB_NADDR16_HI:
9393 case R_PPC_EMB_NADDR16_HA:
9394 addend -= 2 * relocation;
9395 break;
9396
9397 case R_PPC_COPY:
9398 case R_PPC_GLOB_DAT:
9399 case R_PPC_JMP_SLOT:
9400 case R_PPC_RELATIVE:
9401 case R_PPC_IRELATIVE:
9402 case R_PPC_PLT32:
9403 case R_PPC_PLTREL32:
9404 case R_PPC_PLT16_LO:
9405 case R_PPC_PLT16_HI:
9406 case R_PPC_PLT16_HA:
9407 case R_PPC_ADDR30:
9408 case R_PPC_EMB_RELSEC16:
9409 case R_PPC_EMB_RELST_LO:
9410 case R_PPC_EMB_RELST_HI:
9411 case R_PPC_EMB_RELST_HA:
9412 case R_PPC_EMB_BIT_FLD:
9413 info->callbacks->einfo
9414 /* xgettext:c-format */
9415 (_("%P: %B: relocation %s is not yet supported for symbol %s\n"),
9416 input_bfd,
9417 howto->name,
9418 sym_name);
9419
9420 bfd_set_error (bfd_error_invalid_operation);
9421 ret = FALSE;
9422 goto copy_reloc;
9423 }
9424
9425 /* Do any further special processing. */
9426 switch (r_type)
9427 {
9428 default:
9429 break;
9430
9431 case R_PPC_ADDR16_HA:
9432 case R_PPC_REL16_HA:
9433 case R_PPC_REL16DX_HA:
9434 case R_PPC_SECTOFF_HA:
9435 case R_PPC_TPREL16_HA:
9436 case R_PPC_DTPREL16_HA:
9437 case R_PPC_EMB_NADDR16_HA:
9438 case R_PPC_EMB_RELST_HA:
9439 /* It's just possible that this symbol is a weak symbol
9440 that's not actually defined anywhere. In that case,
9441 'sec' would be NULL, and we should leave the symbol
9442 alone (it will be set to zero elsewhere in the link). */
9443 if (sec == NULL)
9444 break;
9445 /* Fall through. */
9446
9447 case R_PPC_PLT16_HA:
9448 case R_PPC_GOT16_HA:
9449 case R_PPC_GOT_TLSGD16_HA:
9450 case R_PPC_GOT_TLSLD16_HA:
9451 case R_PPC_GOT_TPREL16_HA:
9452 case R_PPC_GOT_DTPREL16_HA:
9453 /* Add 0x10000 if sign bit in 0:15 is set.
9454 Bits 0:15 are not used. */
9455 addend += 0x8000;
9456 break;
9457
9458 case R_PPC_ADDR16:
9459 case R_PPC_ADDR16_LO:
9460 case R_PPC_GOT16:
9461 case R_PPC_GOT16_LO:
9462 case R_PPC_SDAREL16:
9463 case R_PPC_SECTOFF:
9464 case R_PPC_SECTOFF_LO:
9465 case R_PPC_DTPREL16:
9466 case R_PPC_DTPREL16_LO:
9467 case R_PPC_TPREL16:
9468 case R_PPC_TPREL16_LO:
9469 case R_PPC_GOT_TLSGD16:
9470 case R_PPC_GOT_TLSGD16_LO:
9471 case R_PPC_GOT_TLSLD16:
9472 case R_PPC_GOT_TLSLD16_LO:
9473 case R_PPC_GOT_DTPREL16:
9474 case R_PPC_GOT_DTPREL16_LO:
9475 case R_PPC_GOT_TPREL16:
9476 case R_PPC_GOT_TPREL16_LO:
9477 {
9478 /* The 32-bit ABI lacks proper relocations to deal with
9479 certain 64-bit instructions. Prevent damage to bits
9480 that make up part of the insn opcode. */
9481 unsigned int insn, mask, lobit;
9482
9483 insn = bfd_get_32 (input_bfd,
9484 contents + rel->r_offset - d_offset);
9485 mask = 0;
9486 if (is_insn_ds_form (insn))
9487 mask = 3;
9488 else if (is_insn_dq_form (insn))
9489 mask = 15;
9490 else
9491 break;
9492 relocation += addend;
9493 addend = insn & mask;
9494 lobit = mask & relocation;
9495 if (lobit != 0)
9496 {
9497 relocation ^= lobit;
9498 info->callbacks->einfo
9499 /* xgettext:c-format */
9500 (_("%H: error: %s against `%s' not a multiple of %u\n"),
9501 input_bfd, input_section, rel->r_offset,
9502 howto->name, sym_name, mask + 1);
9503 bfd_set_error (bfd_error_bad_value);
9504 ret = FALSE;
9505 }
9506 }
9507 break;
9508 }
9509
9510 #ifdef DEBUG
9511 fprintf (stderr, "\ttype = %s (%d), name = %s, symbol index = %ld, "
9512 "offset = %ld, addend = %ld\n",
9513 howto->name,
9514 (int) r_type,
9515 sym_name,
9516 r_symndx,
9517 (long) rel->r_offset,
9518 (long) addend);
9519 #endif
9520
9521 if (unresolved_reloc
9522 && !((input_section->flags & SEC_DEBUGGING) != 0
9523 && h->def_dynamic)
9524 && _bfd_elf_section_offset (output_bfd, info, input_section,
9525 rel->r_offset) != (bfd_vma) -1)
9526 {
9527 info->callbacks->einfo
9528 /* xgettext:c-format */
9529 (_("%H: unresolvable %s relocation against symbol `%s'\n"),
9530 input_bfd, input_section, rel->r_offset,
9531 howto->name,
9532 sym_name);
9533 ret = FALSE;
9534 }
9535
9536 /* 16-bit fields in insns mostly have signed values, but a
9537 few insns have 16-bit unsigned values. Really, we should
9538 have different reloc types. */
9539 if (howto->complain_on_overflow != complain_overflow_dont
9540 && howto->dst_mask == 0xffff
9541 && (input_section->flags & SEC_CODE) != 0)
9542 {
9543 enum complain_overflow complain = complain_overflow_signed;
9544
9545 if ((elf_section_flags (input_section) & SHF_PPC_VLE) == 0)
9546 {
9547 unsigned int insn;
9548
9549 insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
9550 if ((insn & (0x3f << 26)) == 10u << 26 /* cmpli */)
9551 complain = complain_overflow_bitfield;
9552 else if ((insn & (0x3f << 26)) == 28u << 26 /* andi */
9553 || (insn & (0x3f << 26)) == 24u << 26 /* ori */
9554 || (insn & (0x3f << 26)) == 26u << 26 /* xori */)
9555 complain = complain_overflow_unsigned;
9556 }
9557 if (howto->complain_on_overflow != complain)
9558 {
9559 alt_howto = *howto;
9560 alt_howto.complain_on_overflow = complain;
9561 howto = &alt_howto;
9562 }
9563 }
9564
9565 if (r_type == R_PPC_REL16DX_HA)
9566 {
9567 /* Split field reloc isn't handled by _bfd_final_link_relocate. */
9568 if (rel->r_offset + 4 > input_section->size)
9569 r = bfd_reloc_outofrange;
9570 else
9571 {
9572 unsigned int insn;
9573
9574 relocation += addend;
9575 relocation -= (rel->r_offset
9576 + input_section->output_offset
9577 + input_section->output_section->vma);
9578 relocation >>= 16;
9579 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
9580 insn &= ~0x1fffc1;
9581 insn |= (relocation & 0xffc1) | ((relocation & 0x3e) << 15);
9582 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
9583 r = bfd_reloc_ok;
9584 }
9585 }
9586 else
9587 r = _bfd_final_link_relocate (howto, input_bfd, input_section, contents,
9588 rel->r_offset, relocation, addend);
9589
9590 if (r != bfd_reloc_ok)
9591 {
9592 if (r == bfd_reloc_overflow)
9593 {
9594 overflow:
9595 /* On code like "if (foo) foo();" don't report overflow
9596 on a branch to zero when foo is undefined. */
9597 if (!warned
9598 && !(h != NULL
9599 && (h->root.type == bfd_link_hash_undefweak
9600 || h->root.type == bfd_link_hash_undefined)
9601 && is_branch_reloc (r_type)))
9602 info->callbacks->reloc_overflow
9603 (info, (h ? &h->root : NULL), sym_name, howto->name,
9604 rel->r_addend, input_bfd, input_section, rel->r_offset);
9605 }
9606 else
9607 {
9608 info->callbacks->einfo
9609 /* xgettext:c-format */
9610 (_("%H: %s reloc against `%s': error %d\n"),
9611 input_bfd, input_section, rel->r_offset,
9612 howto->name, sym_name, (int) r);
9613 ret = FALSE;
9614 }
9615 }
9616 copy_reloc:
9617 if (wrel != rel)
9618 *wrel = *rel;
9619 }
9620
9621 if (wrel != rel)
9622 {
9623 Elf_Internal_Shdr *rel_hdr;
9624 size_t deleted = rel - wrel;
9625
9626 rel_hdr = _bfd_elf_single_rel_hdr (input_section->output_section);
9627 rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted;
9628 if (rel_hdr->sh_size == 0)
9629 {
9630 /* It is too late to remove an empty reloc section. Leave
9631 one NONE reloc.
9632 ??? What is wrong with an empty section??? */
9633 rel_hdr->sh_size = rel_hdr->sh_entsize;
9634 deleted -= 1;
9635 wrel++;
9636 }
9637 relend = wrel;
9638 rel_hdr = _bfd_elf_single_rel_hdr (input_section);
9639 rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted;
9640 input_section->reloc_count -= deleted;
9641 }
9642
9643 #ifdef DEBUG
9644 fprintf (stderr, "\n");
9645 #endif
9646
9647 if (input_section->sec_info_type == SEC_INFO_TYPE_TARGET
9648 && input_section->size != input_section->rawsize
9649 && (strcmp (input_section->output_section->name, ".init") == 0
9650 || strcmp (input_section->output_section->name, ".fini") == 0))
9651 {
9652 /* Branch around the trampolines. */
9653 unsigned int insn = B + input_section->size - input_section->rawsize;
9654 bfd_put_32 (input_bfd, insn, contents + input_section->rawsize);
9655 }
9656
9657 if (htab->params->ppc476_workaround
9658 && input_section->sec_info_type == SEC_INFO_TYPE_TARGET
9659 && (!bfd_link_relocatable (info)
9660 || (input_section->output_section->alignment_power
9661 >= htab->params->pagesize_p2)))
9662 {
9663 bfd_vma start_addr, end_addr, addr;
9664 bfd_vma pagesize = (bfd_vma) 1 << htab->params->pagesize_p2;
9665
9666 if (relax_info->workaround_size != 0)
9667 {
9668 bfd_byte *p;
9669 unsigned int n;
9670 bfd_byte fill[4];
9671
9672 bfd_put_32 (input_bfd, BA, fill);
9673 p = contents + input_section->size - relax_info->workaround_size;
9674 n = relax_info->workaround_size >> 2;
9675 while (n--)
9676 {
9677 memcpy (p, fill, 4);
9678 p += 4;
9679 }
9680 }
9681
9682 /* The idea is: Replace the last instruction on a page with a
9683 branch to a patch area. Put the insn there followed by a
9684 branch back to the next page. Complicated a little by
9685 needing to handle moved conditional branches, and by not
9686 wanting to touch data-in-text. */
9687
9688 start_addr = (input_section->output_section->vma
9689 + input_section->output_offset);
9690 end_addr = (start_addr + input_section->size
9691 - relax_info->workaround_size);
9692 for (addr = ((start_addr & -pagesize) + pagesize - 4);
9693 addr < end_addr;
9694 addr += pagesize)
9695 {
9696 bfd_vma offset = addr - start_addr;
9697 Elf_Internal_Rela *lo, *hi;
9698 bfd_boolean is_data;
9699 bfd_vma patch_off, patch_addr;
9700 unsigned int insn;
9701
9702 /* Do we have a data reloc at this offset? If so, leave
9703 the word alone. */
9704 is_data = FALSE;
9705 lo = relocs;
9706 hi = relend;
9707 rel = NULL;
9708 while (lo < hi)
9709 {
9710 rel = lo + (hi - lo) / 2;
9711 if (rel->r_offset < offset)
9712 lo = rel + 1;
9713 else if (rel->r_offset > offset + 3)
9714 hi = rel;
9715 else
9716 {
9717 switch (ELF32_R_TYPE (rel->r_info))
9718 {
9719 case R_PPC_ADDR32:
9720 case R_PPC_UADDR32:
9721 case R_PPC_REL32:
9722 case R_PPC_ADDR30:
9723 is_data = TRUE;
9724 break;
9725 default:
9726 break;
9727 }
9728 break;
9729 }
9730 }
9731 if (is_data)
9732 continue;
9733
9734 /* Some instructions can be left alone too. Unconditional
9735 branches, except for bcctr with BO=0x14 (bctr, bctrl),
9736 avoid the icache failure.
9737
9738 The problem occurs due to prefetch across a page boundary
9739 where stale instructions can be fetched from the next
9740 page, and the mechanism for flushing these bad
9741 instructions fails under certain circumstances. The
9742 unconditional branches:
9743 1) Branch: b, bl, ba, bla,
9744 2) Branch Conditional: bc, bca, bcl, bcla,
9745 3) Branch Conditional to Link Register: bclr, bclrl,
9746 where (2) and (3) have BO=0x14 making them unconditional,
9747 prevent the bad prefetch because the prefetch itself is
9748 affected by these instructions. This happens even if the
9749 instruction is not executed.
9750
9751 A bctr example:
9752 .
9753 . lis 9,new_page@ha
9754 . addi 9,9,new_page@l
9755 . mtctr 9
9756 . bctr
9757 . nop
9758 . nop
9759 . new_page:
9760 .
9761 The bctr is not predicted taken due to ctr not being
9762 ready, so prefetch continues on past the bctr into the
9763 new page which might have stale instructions. If they
9764 fail to be flushed, then they will be executed after the
9765 bctr executes. Either of the following modifications
9766 prevent the bad prefetch from happening in the first
9767 place:
9768 .
9769 . lis 9,new_page@ha lis 9,new_page@ha
9770 . addi 9,9,new_page@l addi 9,9,new_page@l
9771 . mtctr 9 mtctr 9
9772 . bctr bctr
9773 . nop b somewhere_else
9774 . b somewhere_else nop
9775 . new_page: new_page:
9776 . */
9777 insn = bfd_get_32 (input_bfd, contents + offset);
9778 if ((insn & (0x3f << 26)) == (18u << 26) /* b,bl,ba,bla */
9779 || ((insn & (0x3f << 26)) == (16u << 26) /* bc,bcl,bca,bcla*/
9780 && (insn & (0x14 << 21)) == (0x14 << 21)) /* with BO=0x14 */
9781 || ((insn & (0x3f << 26)) == (19u << 26)
9782 && (insn & (0x3ff << 1)) == (16u << 1) /* bclr,bclrl */
9783 && (insn & (0x14 << 21)) == (0x14 << 21)))/* with BO=0x14 */
9784 continue;
9785
9786 patch_addr = (start_addr + input_section->size
9787 - relax_info->workaround_size);
9788 patch_addr = (patch_addr + 15) & -16;
9789 patch_off = patch_addr - start_addr;
9790 bfd_put_32 (input_bfd, B + patch_off - offset, contents + offset);
9791
9792 if (rel != NULL
9793 && rel->r_offset >= offset
9794 && rel->r_offset < offset + 4)
9795 {
9796 asection *sreloc;
9797
9798 /* If the insn we are patching had a reloc, adjust the
9799 reloc r_offset so that the reloc applies to the moved
9800 location. This matters for -r and --emit-relocs. */
9801 if (rel + 1 != relend)
9802 {
9803 Elf_Internal_Rela tmp = *rel;
9804
9805 /* Keep the relocs sorted by r_offset. */
9806 memmove (rel, rel + 1, (relend - (rel + 1)) * sizeof (*rel));
9807 relend[-1] = tmp;
9808 }
9809 relend[-1].r_offset += patch_off - offset;
9810
9811 /* Adjust REL16 addends too. */
9812 switch (ELF32_R_TYPE (relend[-1].r_info))
9813 {
9814 case R_PPC_REL16:
9815 case R_PPC_REL16_LO:
9816 case R_PPC_REL16_HI:
9817 case R_PPC_REL16_HA:
9818 relend[-1].r_addend += patch_off - offset;
9819 break;
9820 default:
9821 break;
9822 }
9823
9824 /* If we are building a PIE or shared library with
9825 non-PIC objects, perhaps we had a dynamic reloc too?
9826 If so, the dynamic reloc must move with the insn. */
9827 sreloc = elf_section_data (input_section)->sreloc;
9828 if (sreloc != NULL)
9829 {
9830 Elf32_External_Rela *slo, *shi, *srelend;
9831 bfd_vma soffset;
9832
9833 slo = (Elf32_External_Rela *) sreloc->contents;
9834 shi = srelend = slo + sreloc->reloc_count;
9835 soffset = (offset + input_section->output_section->vma
9836 + input_section->output_offset);
9837 while (slo < shi)
9838 {
9839 Elf32_External_Rela *srel = slo + (shi - slo) / 2;
9840 bfd_elf32_swap_reloca_in (output_bfd, (bfd_byte *) srel,
9841 &outrel);
9842 if (outrel.r_offset < soffset)
9843 slo = srel + 1;
9844 else if (outrel.r_offset > soffset + 3)
9845 shi = srel;
9846 else
9847 {
9848 if (srel + 1 != srelend)
9849 {
9850 memmove (srel, srel + 1,
9851 (srelend - (srel + 1)) * sizeof (*srel));
9852 srel = srelend - 1;
9853 }
9854 outrel.r_offset += patch_off - offset;
9855 bfd_elf32_swap_reloca_out (output_bfd, &outrel,
9856 (bfd_byte *) srel);
9857 break;
9858 }
9859 }
9860 }
9861 }
9862 else
9863 rel = NULL;
9864
9865 if ((insn & (0x3f << 26)) == (16u << 26) /* bc */
9866 && (insn & 2) == 0 /* relative */)
9867 {
9868 bfd_vma delta = ((insn & 0xfffc) ^ 0x8000) - 0x8000;
9869
9870 delta += offset - patch_off;
9871 if (bfd_link_relocatable (info) && rel != NULL)
9872 delta = 0;
9873 if (!bfd_link_relocatable (info) && rel != NULL)
9874 {
9875 enum elf_ppc_reloc_type r_type;
9876
9877 r_type = ELF32_R_TYPE (relend[-1].r_info);
9878 if (r_type == R_PPC_REL14_BRTAKEN)
9879 insn |= BRANCH_PREDICT_BIT;
9880 else if (r_type == R_PPC_REL14_BRNTAKEN)
9881 insn &= ~BRANCH_PREDICT_BIT;
9882 else
9883 BFD_ASSERT (r_type == R_PPC_REL14);
9884
9885 if ((r_type == R_PPC_REL14_BRTAKEN
9886 || r_type == R_PPC_REL14_BRNTAKEN)
9887 && delta + 0x8000 < 0x10000
9888 && (bfd_signed_vma) delta < 0)
9889 insn ^= BRANCH_PREDICT_BIT;
9890 }
9891 if (delta + 0x8000 < 0x10000)
9892 {
9893 bfd_put_32 (input_bfd,
9894 (insn & ~0xfffc) | (delta & 0xfffc),
9895 contents + patch_off);
9896 patch_off += 4;
9897 bfd_put_32 (input_bfd,
9898 B | ((offset + 4 - patch_off) & 0x3fffffc),
9899 contents + patch_off);
9900 patch_off += 4;
9901 }
9902 else
9903 {
9904 if (rel != NULL)
9905 {
9906 unsigned int r_sym = ELF32_R_SYM (relend[-1].r_info);
9907
9908 relend[-1].r_offset += 8;
9909 relend[-1].r_info = ELF32_R_INFO (r_sym, R_PPC_REL24);
9910 }
9911 bfd_put_32 (input_bfd,
9912 (insn & ~0xfffc) | 8,
9913 contents + patch_off);
9914 patch_off += 4;
9915 bfd_put_32 (input_bfd,
9916 B | ((offset + 4 - patch_off) & 0x3fffffc),
9917 contents + patch_off);
9918 patch_off += 4;
9919 bfd_put_32 (input_bfd,
9920 B | ((delta - 8) & 0x3fffffc),
9921 contents + patch_off);
9922 patch_off += 4;
9923 }
9924 }
9925 else
9926 {
9927 bfd_put_32 (input_bfd, insn, contents + patch_off);
9928 patch_off += 4;
9929 bfd_put_32 (input_bfd,
9930 B | ((offset + 4 - patch_off) & 0x3fffffc),
9931 contents + patch_off);
9932 patch_off += 4;
9933 }
9934 BFD_ASSERT (patch_off <= input_section->size);
9935 relax_info->workaround_size = input_section->size - patch_off;
9936 }
9937 }
9938
9939 return ret;
9940 }
9941 \f
9942 /* Finish up dynamic symbol handling. We set the contents of various
9943 dynamic sections here. */
9944
9945 static bfd_boolean
9946 ppc_elf_finish_dynamic_symbol (bfd *output_bfd,
9947 struct bfd_link_info *info,
9948 struct elf_link_hash_entry *h,
9949 Elf_Internal_Sym *sym)
9950 {
9951 struct ppc_elf_link_hash_table *htab;
9952 struct plt_entry *ent;
9953 bfd_boolean doneone;
9954
9955 #ifdef DEBUG
9956 fprintf (stderr, "ppc_elf_finish_dynamic_symbol called for %s",
9957 h->root.root.string);
9958 #endif
9959
9960 htab = ppc_elf_hash_table (info);
9961 BFD_ASSERT (htab->elf.dynobj != NULL);
9962
9963 doneone = FALSE;
9964 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
9965 if (ent->plt.offset != (bfd_vma) -1)
9966 {
9967 if (!doneone)
9968 {
9969 Elf_Internal_Rela rela;
9970 bfd_byte *loc;
9971 bfd_vma reloc_index;
9972
9973 if (htab->plt_type == PLT_NEW
9974 || !htab->elf.dynamic_sections_created
9975 || h->dynindx == -1)
9976 reloc_index = ent->plt.offset / 4;
9977 else
9978 {
9979 reloc_index = ((ent->plt.offset - htab->plt_initial_entry_size)
9980 / htab->plt_slot_size);
9981 if (reloc_index > PLT_NUM_SINGLE_ENTRIES
9982 && htab->plt_type == PLT_OLD)
9983 reloc_index -= (reloc_index - PLT_NUM_SINGLE_ENTRIES) / 2;
9984 }
9985
9986 /* This symbol has an entry in the procedure linkage table.
9987 Set it up. */
9988 if (htab->plt_type == PLT_VXWORKS
9989 && htab->elf.dynamic_sections_created
9990 && h->dynindx != -1)
9991 {
9992 bfd_vma got_offset;
9993 const bfd_vma *plt_entry;
9994
9995 /* The first three entries in .got.plt are reserved. */
9996 got_offset = (reloc_index + 3) * 4;
9997
9998 /* Use the right PLT. */
9999 plt_entry = bfd_link_pic (info) ? ppc_elf_vxworks_pic_plt_entry
10000 : ppc_elf_vxworks_plt_entry;
10001
10002 /* Fill in the .plt on VxWorks. */
10003 if (bfd_link_pic (info))
10004 {
10005 bfd_put_32 (output_bfd,
10006 plt_entry[0] | PPC_HA (got_offset),
10007 htab->elf.splt->contents + ent->plt.offset + 0);
10008 bfd_put_32 (output_bfd,
10009 plt_entry[1] | PPC_LO (got_offset),
10010 htab->elf.splt->contents + ent->plt.offset + 4);
10011 }
10012 else
10013 {
10014 bfd_vma got_loc = got_offset + SYM_VAL (htab->elf.hgot);
10015
10016 bfd_put_32 (output_bfd,
10017 plt_entry[0] | PPC_HA (got_loc),
10018 htab->elf.splt->contents + ent->plt.offset + 0);
10019 bfd_put_32 (output_bfd,
10020 plt_entry[1] | PPC_LO (got_loc),
10021 htab->elf.splt->contents + ent->plt.offset + 4);
10022 }
10023
10024 bfd_put_32 (output_bfd, plt_entry[2],
10025 htab->elf.splt->contents + ent->plt.offset + 8);
10026 bfd_put_32 (output_bfd, plt_entry[3],
10027 htab->elf.splt->contents + ent->plt.offset + 12);
10028
10029 /* This instruction is an immediate load. The value loaded is
10030 the byte offset of the R_PPC_JMP_SLOT relocation from the
10031 start of the .rela.plt section. The value is stored in the
10032 low-order 16 bits of the load instruction. */
10033 /* NOTE: It appears that this is now an index rather than a
10034 prescaled offset. */
10035 bfd_put_32 (output_bfd,
10036 plt_entry[4] | reloc_index,
10037 htab->elf.splt->contents + ent->plt.offset + 16);
10038 /* This instruction is a PC-relative branch whose target is
10039 the start of the PLT section. The address of this branch
10040 instruction is 20 bytes beyond the start of this PLT entry.
10041 The address is encoded in bits 6-29, inclusive. The value
10042 stored is right-shifted by two bits, permitting a 26-bit
10043 offset. */
10044 bfd_put_32 (output_bfd,
10045 (plt_entry[5]
10046 | (-(ent->plt.offset + 20) & 0x03fffffc)),
10047 htab->elf.splt->contents + ent->plt.offset + 20);
10048 bfd_put_32 (output_bfd, plt_entry[6],
10049 htab->elf.splt->contents + ent->plt.offset + 24);
10050 bfd_put_32 (output_bfd, plt_entry[7],
10051 htab->elf.splt->contents + ent->plt.offset + 28);
10052
10053 /* Fill in the GOT entry corresponding to this PLT slot with
10054 the address immediately after the "bctr" instruction
10055 in this PLT entry. */
10056 bfd_put_32 (output_bfd, (htab->elf.splt->output_section->vma
10057 + htab->elf.splt->output_offset
10058 + ent->plt.offset + 16),
10059 htab->elf.sgotplt->contents + got_offset);
10060
10061 if (!bfd_link_pic (info))
10062 {
10063 /* Fill in a couple of entries in .rela.plt.unloaded. */
10064 loc = htab->srelplt2->contents
10065 + ((VXWORKS_PLTRESOLVE_RELOCS + reloc_index
10066 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS)
10067 * sizeof (Elf32_External_Rela));
10068
10069 /* Provide the @ha relocation for the first instruction. */
10070 rela.r_offset = (htab->elf.splt->output_section->vma
10071 + htab->elf.splt->output_offset
10072 + ent->plt.offset + 2);
10073 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
10074 R_PPC_ADDR16_HA);
10075 rela.r_addend = got_offset;
10076 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10077 loc += sizeof (Elf32_External_Rela);
10078
10079 /* Provide the @l relocation for the second instruction. */
10080 rela.r_offset = (htab->elf.splt->output_section->vma
10081 + htab->elf.splt->output_offset
10082 + ent->plt.offset + 6);
10083 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
10084 R_PPC_ADDR16_LO);
10085 rela.r_addend = got_offset;
10086 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10087 loc += sizeof (Elf32_External_Rela);
10088
10089 /* Provide a relocation for the GOT entry corresponding to this
10090 PLT slot. Point it at the middle of the .plt entry. */
10091 rela.r_offset = (htab->elf.sgotplt->output_section->vma
10092 + htab->elf.sgotplt->output_offset
10093 + got_offset);
10094 rela.r_info = ELF32_R_INFO (htab->elf.hplt->indx,
10095 R_PPC_ADDR32);
10096 rela.r_addend = ent->plt.offset + 16;
10097 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10098 }
10099
10100 /* VxWorks uses non-standard semantics for R_PPC_JMP_SLOT.
10101 In particular, the offset for the relocation is not the
10102 address of the PLT entry for this function, as specified
10103 by the ABI. Instead, the offset is set to the address of
10104 the GOT slot for this function. See EABI 4.4.4.1. */
10105 rela.r_offset = (htab->elf.sgotplt->output_section->vma
10106 + htab->elf.sgotplt->output_offset
10107 + got_offset);
10108
10109 }
10110 else
10111 {
10112 asection *splt = htab->elf.splt;
10113 if (!htab->elf.dynamic_sections_created
10114 || h->dynindx == -1)
10115 splt = htab->elf.iplt;
10116
10117 rela.r_offset = (splt->output_section->vma
10118 + splt->output_offset
10119 + ent->plt.offset);
10120 if (htab->plt_type == PLT_OLD
10121 || !htab->elf.dynamic_sections_created
10122 || h->dynindx == -1)
10123 {
10124 /* We don't need to fill in the .plt. The ppc dynamic
10125 linker will fill it in. */
10126 }
10127 else
10128 {
10129 bfd_vma val = (htab->glink_pltresolve + ent->plt.offset
10130 + htab->glink->output_section->vma
10131 + htab->glink->output_offset);
10132 bfd_put_32 (output_bfd, val,
10133 splt->contents + ent->plt.offset);
10134 }
10135 }
10136
10137 /* Fill in the entry in the .rela.plt section. */
10138 rela.r_addend = 0;
10139 if (!htab->elf.dynamic_sections_created
10140 || h->dynindx == -1)
10141 {
10142 BFD_ASSERT (h->type == STT_GNU_IFUNC
10143 && h->def_regular
10144 && (h->root.type == bfd_link_hash_defined
10145 || h->root.type == bfd_link_hash_defweak));
10146 rela.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
10147 rela.r_addend = SYM_VAL (h);
10148 }
10149 else
10150 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_JMP_SLOT);
10151
10152 if (!htab->elf.dynamic_sections_created
10153 || h->dynindx == -1)
10154 {
10155 loc = (htab->elf.irelplt->contents
10156 + (htab->elf.irelplt->reloc_count++
10157 * sizeof (Elf32_External_Rela)));
10158 htab->local_ifunc_resolver = 1;
10159 }
10160 else
10161 {
10162 loc = (htab->elf.srelplt->contents
10163 + reloc_index * sizeof (Elf32_External_Rela));
10164 if (h->type == STT_GNU_IFUNC && is_static_defined (h))
10165 htab->maybe_local_ifunc_resolver = 1;
10166 }
10167 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10168
10169 if (!h->def_regular)
10170 {
10171 /* Mark the symbol as undefined, rather than as
10172 defined in the .plt section. Leave the value if
10173 there were any relocations where pointer equality
10174 matters (this is a clue for the dynamic linker, to
10175 make function pointer comparisons work between an
10176 application and shared library), otherwise set it
10177 to zero. */
10178 sym->st_shndx = SHN_UNDEF;
10179 if (!h->pointer_equality_needed)
10180 sym->st_value = 0;
10181 else if (!h->ref_regular_nonweak)
10182 {
10183 /* This breaks function pointer comparisons, but
10184 that is better than breaking tests for a NULL
10185 function pointer. */
10186 sym->st_value = 0;
10187 }
10188 }
10189 else if (h->type == STT_GNU_IFUNC
10190 && !bfd_link_pic (info))
10191 {
10192 /* Set the value of ifunc symbols in a non-pie
10193 executable to the glink entry. This is to avoid
10194 text relocations. We can't do this for ifunc in
10195 allocate_dynrelocs, as we do for normal dynamic
10196 function symbols with plt entries, because we need
10197 to keep the original value around for the ifunc
10198 relocation. */
10199 sym->st_shndx = (_bfd_elf_section_from_bfd_section
10200 (output_bfd, htab->glink->output_section));
10201 sym->st_value = (ent->glink_offset
10202 + htab->glink->output_offset
10203 + htab->glink->output_section->vma);
10204 }
10205 doneone = TRUE;
10206 }
10207
10208 if (htab->plt_type == PLT_NEW
10209 || !htab->elf.dynamic_sections_created
10210 || h->dynindx == -1)
10211 {
10212 unsigned char *p;
10213 asection *splt = htab->elf.splt;
10214 if (!htab->elf.dynamic_sections_created
10215 || h->dynindx == -1)
10216 splt = htab->elf.iplt;
10217
10218 p = (unsigned char *) htab->glink->contents + ent->glink_offset;
10219
10220 if (h == htab->tls_get_addr && !htab->params->no_tls_get_addr_opt)
10221 {
10222 bfd_put_32 (output_bfd, LWZ_11_3, p);
10223 p += 4;
10224 bfd_put_32 (output_bfd, LWZ_12_3 + 4, p);
10225 p += 4;
10226 bfd_put_32 (output_bfd, MR_0_3, p);
10227 p += 4;
10228 bfd_put_32 (output_bfd, CMPWI_11_0, p);
10229 p += 4;
10230 bfd_put_32 (output_bfd, ADD_3_12_2, p);
10231 p += 4;
10232 bfd_put_32 (output_bfd, BEQLR, p);
10233 p += 4;
10234 bfd_put_32 (output_bfd, MR_3_0, p);
10235 p += 4;
10236 bfd_put_32 (output_bfd, NOP, p);
10237 p += 4;
10238 }
10239
10240 write_glink_stub (ent, splt, p, info);
10241
10242 if (!bfd_link_pic (info))
10243 /* We only need one non-PIC glink stub. */
10244 break;
10245 }
10246 else
10247 break;
10248 }
10249
10250 if (h->needs_copy)
10251 {
10252 asection *s;
10253 Elf_Internal_Rela rela;
10254 bfd_byte *loc;
10255
10256 /* This symbols needs a copy reloc. Set it up. */
10257
10258 #ifdef DEBUG
10259 fprintf (stderr, ", copy");
10260 #endif
10261
10262 BFD_ASSERT (h->dynindx != -1);
10263
10264 if (ppc_elf_hash_entry (h)->has_sda_refs)
10265 s = htab->relsbss;
10266 else if (h->root.u.def.section == htab->elf.sdynrelro)
10267 s = htab->elf.sreldynrelro;
10268 else
10269 s = htab->elf.srelbss;
10270 BFD_ASSERT (s != NULL);
10271
10272 rela.r_offset = SYM_VAL (h);
10273 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_COPY);
10274 rela.r_addend = 0;
10275 loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
10276 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10277 }
10278
10279 #ifdef DEBUG
10280 fprintf (stderr, "\n");
10281 #endif
10282
10283 return TRUE;
10284 }
10285 \f
10286 static enum elf_reloc_type_class
10287 ppc_elf_reloc_type_class (const struct bfd_link_info *info,
10288 const asection *rel_sec,
10289 const Elf_Internal_Rela *rela)
10290 {
10291 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
10292
10293 if (rel_sec == htab->elf.irelplt)
10294 return reloc_class_ifunc;
10295
10296 switch (ELF32_R_TYPE (rela->r_info))
10297 {
10298 case R_PPC_RELATIVE:
10299 return reloc_class_relative;
10300 case R_PPC_JMP_SLOT:
10301 return reloc_class_plt;
10302 case R_PPC_COPY:
10303 return reloc_class_copy;
10304 default:
10305 return reloc_class_normal;
10306 }
10307 }
10308 \f
10309 /* Finish up the dynamic sections. */
10310
10311 static bfd_boolean
10312 ppc_elf_finish_dynamic_sections (bfd *output_bfd,
10313 struct bfd_link_info *info)
10314 {
10315 asection *sdyn;
10316 struct ppc_elf_link_hash_table *htab;
10317 bfd_vma got;
10318 bfd *dynobj;
10319 bfd_boolean ret = TRUE;
10320
10321 #ifdef DEBUG
10322 fprintf (stderr, "ppc_elf_finish_dynamic_sections called\n");
10323 #endif
10324
10325 htab = ppc_elf_hash_table (info);
10326 dynobj = htab->elf.dynobj;
10327 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
10328
10329 got = 0;
10330 if (htab->elf.hgot != NULL)
10331 got = SYM_VAL (htab->elf.hgot);
10332
10333 if (htab->elf.dynamic_sections_created)
10334 {
10335 Elf32_External_Dyn *dyncon, *dynconend;
10336
10337 BFD_ASSERT (htab->elf.splt != NULL && sdyn != NULL);
10338
10339 dyncon = (Elf32_External_Dyn *) sdyn->contents;
10340 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
10341 for (; dyncon < dynconend; dyncon++)
10342 {
10343 Elf_Internal_Dyn dyn;
10344 asection *s;
10345
10346 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
10347
10348 switch (dyn.d_tag)
10349 {
10350 case DT_PLTGOT:
10351 if (htab->is_vxworks)
10352 s = htab->elf.sgotplt;
10353 else
10354 s = htab->elf.splt;
10355 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
10356 break;
10357
10358 case DT_PLTRELSZ:
10359 dyn.d_un.d_val = htab->elf.srelplt->size;
10360 break;
10361
10362 case DT_JMPREL:
10363 s = htab->elf.srelplt;
10364 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
10365 break;
10366
10367 case DT_PPC_GOT:
10368 dyn.d_un.d_ptr = got;
10369 break;
10370
10371 case DT_TEXTREL:
10372 if (htab->local_ifunc_resolver)
10373 info->callbacks->einfo
10374 (_("%X%P: text relocations and GNU indirect "
10375 "functions will result in a segfault at runtime\n"));
10376 else if (htab->maybe_local_ifunc_resolver)
10377 info->callbacks->einfo
10378 (_("%P: warning: text relocations and GNU indirect "
10379 "functions may result in a segfault at runtime\n"));
10380 continue;
10381
10382 default:
10383 if (htab->is_vxworks
10384 && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn))
10385 break;
10386 continue;
10387 }
10388
10389 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
10390 }
10391 }
10392
10393 if (htab->elf.sgot != NULL
10394 && htab->elf.sgot->output_section != bfd_abs_section_ptr)
10395 {
10396 if (htab->elf.hgot->root.u.def.section == htab->elf.sgot
10397 || htab->elf.hgot->root.u.def.section == htab->elf.sgotplt)
10398 {
10399 unsigned char *p = htab->elf.hgot->root.u.def.section->contents;
10400
10401 p += htab->elf.hgot->root.u.def.value;
10402 if (htab->plt_type == PLT_OLD)
10403 {
10404 /* Add a blrl instruction at _GLOBAL_OFFSET_TABLE_-4
10405 so that a function can easily find the address of
10406 _GLOBAL_OFFSET_TABLE_. */
10407 BFD_ASSERT (htab->elf.hgot->root.u.def.value - 4
10408 < htab->elf.hgot->root.u.def.section->size);
10409 bfd_put_32 (output_bfd, 0x4e800021, p - 4);
10410 }
10411
10412 if (sdyn != NULL)
10413 {
10414 bfd_vma val = sdyn->output_section->vma + sdyn->output_offset;
10415 BFD_ASSERT (htab->elf.hgot->root.u.def.value
10416 < htab->elf.hgot->root.u.def.section->size);
10417 bfd_put_32 (output_bfd, val, p);
10418 }
10419 }
10420 else
10421 {
10422 /* xgettext:c-format */
10423 info->callbacks->einfo (_("%P: %s not defined in linker created %s\n"),
10424 htab->elf.hgot->root.root.string,
10425 (htab->elf.sgotplt != NULL
10426 ? htab->elf.sgotplt->name
10427 : htab->elf.sgot->name));
10428 bfd_set_error (bfd_error_bad_value);
10429 ret = FALSE;
10430 }
10431
10432 elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize = 4;
10433 }
10434
10435 /* Fill in the first entry in the VxWorks procedure linkage table. */
10436 if (htab->is_vxworks
10437 && htab->elf.splt != NULL
10438 && htab->elf.splt->size != 0
10439 && htab->elf.splt->output_section != bfd_abs_section_ptr)
10440 {
10441 asection *splt = htab->elf.splt;
10442 /* Use the right PLT. */
10443 const bfd_vma *plt_entry = (bfd_link_pic (info)
10444 ? ppc_elf_vxworks_pic_plt0_entry
10445 : ppc_elf_vxworks_plt0_entry);
10446
10447 if (!bfd_link_pic (info))
10448 {
10449 bfd_vma got_value = SYM_VAL (htab->elf.hgot);
10450
10451 bfd_put_32 (output_bfd, plt_entry[0] | PPC_HA (got_value),
10452 splt->contents + 0);
10453 bfd_put_32 (output_bfd, plt_entry[1] | PPC_LO (got_value),
10454 splt->contents + 4);
10455 }
10456 else
10457 {
10458 bfd_put_32 (output_bfd, plt_entry[0], splt->contents + 0);
10459 bfd_put_32 (output_bfd, plt_entry[1], splt->contents + 4);
10460 }
10461 bfd_put_32 (output_bfd, plt_entry[2], splt->contents + 8);
10462 bfd_put_32 (output_bfd, plt_entry[3], splt->contents + 12);
10463 bfd_put_32 (output_bfd, plt_entry[4], splt->contents + 16);
10464 bfd_put_32 (output_bfd, plt_entry[5], splt->contents + 20);
10465 bfd_put_32 (output_bfd, plt_entry[6], splt->contents + 24);
10466 bfd_put_32 (output_bfd, plt_entry[7], splt->contents + 28);
10467
10468 if (! bfd_link_pic (info))
10469 {
10470 Elf_Internal_Rela rela;
10471 bfd_byte *loc;
10472
10473 loc = htab->srelplt2->contents;
10474
10475 /* Output the @ha relocation for the first instruction. */
10476 rela.r_offset = (htab->elf.splt->output_section->vma
10477 + htab->elf.splt->output_offset
10478 + 2);
10479 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
10480 rela.r_addend = 0;
10481 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10482 loc += sizeof (Elf32_External_Rela);
10483
10484 /* Output the @l relocation for the second instruction. */
10485 rela.r_offset = (htab->elf.splt->output_section->vma
10486 + htab->elf.splt->output_offset
10487 + 6);
10488 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
10489 rela.r_addend = 0;
10490 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10491 loc += sizeof (Elf32_External_Rela);
10492
10493 /* Fix up the remaining relocations. They may have the wrong
10494 symbol index for _G_O_T_ or _P_L_T_ depending on the order
10495 in which symbols were output. */
10496 while (loc < htab->srelplt2->contents + htab->srelplt2->size)
10497 {
10498 Elf_Internal_Rela rel;
10499
10500 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
10501 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
10502 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
10503 loc += sizeof (Elf32_External_Rela);
10504
10505 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
10506 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
10507 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
10508 loc += sizeof (Elf32_External_Rela);
10509
10510 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
10511 rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_PPC_ADDR32);
10512 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
10513 loc += sizeof (Elf32_External_Rela);
10514 }
10515 }
10516 }
10517
10518 if (htab->glink != NULL
10519 && htab->glink->contents != NULL
10520 && htab->elf.dynamic_sections_created)
10521 {
10522 unsigned char *p;
10523 unsigned char *endp;
10524 bfd_vma res0;
10525 unsigned int i;
10526
10527 /*
10528 * PIC glink code is the following:
10529 *
10530 * # ith PLT code stub.
10531 * addis 11,30,(plt+(i-1)*4-got)@ha
10532 * lwz 11,(plt+(i-1)*4-got)@l(11)
10533 * mtctr 11
10534 * bctr
10535 *
10536 * # A table of branches, one for each plt entry.
10537 * # The idea is that the plt call stub loads ctr and r11 with these
10538 * # addresses, so (r11 - res_0) gives the plt index * 4.
10539 * res_0: b PLTresolve
10540 * res_1: b PLTresolve
10541 * .
10542 * # Some number of entries towards the end can be nops
10543 * res_n_m3: nop
10544 * res_n_m2: nop
10545 * res_n_m1:
10546 *
10547 * PLTresolve:
10548 * addis 11,11,(1f-res_0)@ha
10549 * mflr 0
10550 * bcl 20,31,1f
10551 * 1: addi 11,11,(1b-res_0)@l
10552 * mflr 12
10553 * mtlr 0
10554 * sub 11,11,12 # r11 = index * 4
10555 * addis 12,12,(got+4-1b)@ha
10556 * lwz 0,(got+4-1b)@l(12) # got[1] address of dl_runtime_resolve
10557 * lwz 12,(got+8-1b)@l(12) # got[2] contains the map address
10558 * mtctr 0
10559 * add 0,11,11
10560 * add 11,0,11 # r11 = index * 12 = reloc offset.
10561 * bctr
10562 */
10563 static const unsigned int pic_plt_resolve[] =
10564 {
10565 ADDIS_11_11,
10566 MFLR_0,
10567 BCL_20_31,
10568 ADDI_11_11,
10569 MFLR_12,
10570 MTLR_0,
10571 SUB_11_11_12,
10572 ADDIS_12_12,
10573 LWZ_0_12,
10574 LWZ_12_12,
10575 MTCTR_0,
10576 ADD_0_11_11,
10577 ADD_11_0_11,
10578 BCTR,
10579 NOP,
10580 NOP
10581 };
10582
10583 /*
10584 * Non-PIC glink code is a little simpler.
10585 *
10586 * # ith PLT code stub.
10587 * lis 11,(plt+(i-1)*4)@ha
10588 * lwz 11,(plt+(i-1)*4)@l(11)
10589 * mtctr 11
10590 * bctr
10591 *
10592 * The branch table is the same, then comes
10593 *
10594 * PLTresolve:
10595 * lis 12,(got+4)@ha
10596 * addis 11,11,(-res_0)@ha
10597 * lwz 0,(got+4)@l(12) # got[1] address of dl_runtime_resolve
10598 * addi 11,11,(-res_0)@l # r11 = index * 4
10599 * mtctr 0
10600 * add 0,11,11
10601 * lwz 12,(got+8)@l(12) # got[2] contains the map address
10602 * add 11,0,11 # r11 = index * 12 = reloc offset.
10603 * bctr
10604 */
10605 static const unsigned int plt_resolve[] =
10606 {
10607 LIS_12,
10608 ADDIS_11_11,
10609 LWZ_0_12,
10610 ADDI_11_11,
10611 MTCTR_0,
10612 ADD_0_11_11,
10613 LWZ_12_12,
10614 ADD_11_0_11,
10615 BCTR,
10616 NOP,
10617 NOP,
10618 NOP,
10619 NOP,
10620 NOP,
10621 NOP,
10622 NOP
10623 };
10624
10625 if (ARRAY_SIZE (pic_plt_resolve) != GLINK_PLTRESOLVE / 4)
10626 abort ();
10627 if (ARRAY_SIZE (plt_resolve) != GLINK_PLTRESOLVE / 4)
10628 abort ();
10629
10630 /* Build the branch table, one for each plt entry (less one),
10631 and perhaps some padding. */
10632 p = htab->glink->contents;
10633 p += htab->glink_pltresolve;
10634 endp = htab->glink->contents;
10635 endp += htab->glink->size - GLINK_PLTRESOLVE;
10636 while (p < endp - (htab->params->ppc476_workaround ? 0 : 8 * 4))
10637 {
10638 bfd_put_32 (output_bfd, B + endp - p, p);
10639 p += 4;
10640 }
10641 while (p < endp)
10642 {
10643 bfd_put_32 (output_bfd, NOP, p);
10644 p += 4;
10645 }
10646
10647 res0 = (htab->glink_pltresolve
10648 + htab->glink->output_section->vma
10649 + htab->glink->output_offset);
10650
10651 if (htab->params->ppc476_workaround)
10652 {
10653 /* Ensure that a call stub at the end of a page doesn't
10654 result in prefetch over the end of the page into the
10655 glink branch table. */
10656 bfd_vma pagesize = (bfd_vma) 1 << htab->params->pagesize_p2;
10657 bfd_vma page_addr;
10658 bfd_vma glink_start = (htab->glink->output_section->vma
10659 + htab->glink->output_offset);
10660
10661 for (page_addr = res0 & -pagesize;
10662 page_addr > glink_start;
10663 page_addr -= pagesize)
10664 {
10665 /* We have a plt call stub that may need fixing. */
10666 bfd_byte *loc;
10667 unsigned int insn;
10668
10669 loc = htab->glink->contents + page_addr - 4 - glink_start;
10670 insn = bfd_get_32 (output_bfd, loc);
10671 if (insn == BCTR)
10672 {
10673 /* By alignment, we know that there must be at least
10674 one other call stub before this one. */
10675 insn = bfd_get_32 (output_bfd, loc - 16);
10676 if (insn == BCTR)
10677 bfd_put_32 (output_bfd, B | (-16 & 0x3fffffc), loc);
10678 else
10679 bfd_put_32 (output_bfd, B | (-20 & 0x3fffffc), loc);
10680 }
10681 }
10682 }
10683
10684 /* Last comes the PLTresolve stub. */
10685 if (bfd_link_pic (info))
10686 {
10687 bfd_vma bcl;
10688
10689 for (i = 0; i < ARRAY_SIZE (pic_plt_resolve); i++)
10690 {
10691 unsigned int insn = pic_plt_resolve[i];
10692
10693 if (htab->params->ppc476_workaround && insn == NOP)
10694 insn = BA + 0;
10695 bfd_put_32 (output_bfd, insn, p);
10696 p += 4;
10697 }
10698 p -= 4 * ARRAY_SIZE (pic_plt_resolve);
10699
10700 bcl = (htab->glink->size - GLINK_PLTRESOLVE + 3*4
10701 + htab->glink->output_section->vma
10702 + htab->glink->output_offset);
10703
10704 bfd_put_32 (output_bfd,
10705 ADDIS_11_11 + PPC_HA (bcl - res0), p + 0*4);
10706 bfd_put_32 (output_bfd,
10707 ADDI_11_11 + PPC_LO (bcl - res0), p + 3*4);
10708 bfd_put_32 (output_bfd,
10709 ADDIS_12_12 + PPC_HA (got + 4 - bcl), p + 7*4);
10710 if (PPC_HA (got + 4 - bcl) == PPC_HA (got + 8 - bcl))
10711 {
10712 bfd_put_32 (output_bfd,
10713 LWZ_0_12 + PPC_LO (got + 4 - bcl), p + 8*4);
10714 bfd_put_32 (output_bfd,
10715 LWZ_12_12 + PPC_LO (got + 8 - bcl), p + 9*4);
10716 }
10717 else
10718 {
10719 bfd_put_32 (output_bfd,
10720 LWZU_0_12 + PPC_LO (got + 4 - bcl), p + 8*4);
10721 bfd_put_32 (output_bfd,
10722 LWZ_12_12 + 4, p + 9*4);
10723 }
10724 }
10725 else
10726 {
10727 for (i = 0; i < ARRAY_SIZE (plt_resolve); i++)
10728 {
10729 unsigned int insn = plt_resolve[i];
10730
10731 if (htab->params->ppc476_workaround && insn == NOP)
10732 insn = BA + 0;
10733 bfd_put_32 (output_bfd, insn, p);
10734 p += 4;
10735 }
10736 p -= 4 * ARRAY_SIZE (plt_resolve);
10737
10738 bfd_put_32 (output_bfd,
10739 LIS_12 + PPC_HA (got + 4), p + 0*4);
10740 bfd_put_32 (output_bfd,
10741 ADDIS_11_11 + PPC_HA (-res0), p + 1*4);
10742 bfd_put_32 (output_bfd,
10743 ADDI_11_11 + PPC_LO (-res0), p + 3*4);
10744 if (PPC_HA (got + 4) == PPC_HA (got + 8))
10745 {
10746 bfd_put_32 (output_bfd,
10747 LWZ_0_12 + PPC_LO (got + 4), p + 2*4);
10748 bfd_put_32 (output_bfd,
10749 LWZ_12_12 + PPC_LO (got + 8), p + 6*4);
10750 }
10751 else
10752 {
10753 bfd_put_32 (output_bfd,
10754 LWZU_0_12 + PPC_LO (got + 4), p + 2*4);
10755 bfd_put_32 (output_bfd,
10756 LWZ_12_12 + 4, p + 6*4);
10757 }
10758 }
10759 }
10760
10761 if (htab->glink_eh_frame != NULL
10762 && htab->glink_eh_frame->contents != NULL)
10763 {
10764 unsigned char *p = htab->glink_eh_frame->contents;
10765 bfd_vma val;
10766
10767 p += sizeof (glink_eh_frame_cie);
10768 /* FDE length. */
10769 p += 4;
10770 /* CIE pointer. */
10771 p += 4;
10772 /* Offset to .glink. */
10773 val = (htab->glink->output_section->vma
10774 + htab->glink->output_offset);
10775 val -= (htab->glink_eh_frame->output_section->vma
10776 + htab->glink_eh_frame->output_offset);
10777 val -= p - htab->glink_eh_frame->contents;
10778 bfd_put_32 (htab->elf.dynobj, val, p);
10779
10780 if (htab->glink_eh_frame->sec_info_type == SEC_INFO_TYPE_EH_FRAME
10781 && !_bfd_elf_write_section_eh_frame (output_bfd, info,
10782 htab->glink_eh_frame,
10783 htab->glink_eh_frame->contents))
10784 return FALSE;
10785 }
10786
10787 return ret;
10788 }
10789 \f
10790 #define TARGET_LITTLE_SYM powerpc_elf32_le_vec
10791 #define TARGET_LITTLE_NAME "elf32-powerpcle"
10792 #define TARGET_BIG_SYM powerpc_elf32_vec
10793 #define TARGET_BIG_NAME "elf32-powerpc"
10794 #define ELF_ARCH bfd_arch_powerpc
10795 #define ELF_TARGET_ID PPC32_ELF_DATA
10796 #define ELF_MACHINE_CODE EM_PPC
10797 #ifdef __QNXTARGET__
10798 #define ELF_MAXPAGESIZE 0x1000
10799 #define ELF_COMMONPAGESIZE 0x1000
10800 #else
10801 #define ELF_MAXPAGESIZE 0x10000
10802 #define ELF_COMMONPAGESIZE 0x10000
10803 #endif
10804 #define ELF_MINPAGESIZE 0x1000
10805 #define elf_info_to_howto ppc_elf_info_to_howto
10806
10807 #ifdef EM_CYGNUS_POWERPC
10808 #define ELF_MACHINE_ALT1 EM_CYGNUS_POWERPC
10809 #endif
10810
10811 #ifdef EM_PPC_OLD
10812 #define ELF_MACHINE_ALT2 EM_PPC_OLD
10813 #endif
10814
10815 #define elf_backend_plt_not_loaded 1
10816 #define elf_backend_want_dynrelro 1
10817 #define elf_backend_can_gc_sections 1
10818 #define elf_backend_can_refcount 1
10819 #define elf_backend_rela_normal 1
10820 #define elf_backend_caches_rawsize 1
10821
10822 #define bfd_elf32_mkobject ppc_elf_mkobject
10823 #define bfd_elf32_bfd_merge_private_bfd_data ppc_elf_merge_private_bfd_data
10824 #define bfd_elf32_bfd_relax_section ppc_elf_relax_section
10825 #define bfd_elf32_bfd_reloc_type_lookup ppc_elf_reloc_type_lookup
10826 #define bfd_elf32_bfd_reloc_name_lookup ppc_elf_reloc_name_lookup
10827 #define bfd_elf32_bfd_set_private_flags ppc_elf_set_private_flags
10828 #define bfd_elf32_bfd_link_hash_table_create ppc_elf_link_hash_table_create
10829 #define bfd_elf32_get_synthetic_symtab ppc_elf_get_synthetic_symtab
10830
10831 #define elf_backend_object_p ppc_elf_object_p
10832 #define elf_backend_gc_mark_hook ppc_elf_gc_mark_hook
10833 #define elf_backend_section_from_shdr ppc_elf_section_from_shdr
10834 #define elf_backend_relocate_section ppc_elf_relocate_section
10835 #define elf_backend_create_dynamic_sections ppc_elf_create_dynamic_sections
10836 #define elf_backend_check_relocs ppc_elf_check_relocs
10837 #define elf_backend_relocs_compatible _bfd_elf_relocs_compatible
10838 #define elf_backend_copy_indirect_symbol ppc_elf_copy_indirect_symbol
10839 #define elf_backend_adjust_dynamic_symbol ppc_elf_adjust_dynamic_symbol
10840 #define elf_backend_add_symbol_hook ppc_elf_add_symbol_hook
10841 #define elf_backend_size_dynamic_sections ppc_elf_size_dynamic_sections
10842 #define elf_backend_hash_symbol ppc_elf_hash_symbol
10843 #define elf_backend_finish_dynamic_symbol ppc_elf_finish_dynamic_symbol
10844 #define elf_backend_finish_dynamic_sections ppc_elf_finish_dynamic_sections
10845 #define elf_backend_fake_sections ppc_elf_fake_sections
10846 #define elf_backend_additional_program_headers ppc_elf_additional_program_headers
10847 #define elf_backend_modify_segment_map ppc_elf_modify_segment_map
10848 #define elf_backend_grok_prstatus ppc_elf_grok_prstatus
10849 #define elf_backend_grok_psinfo ppc_elf_grok_psinfo
10850 #define elf_backend_write_core_note ppc_elf_write_core_note
10851 #define elf_backend_reloc_type_class ppc_elf_reloc_type_class
10852 #define elf_backend_begin_write_processing ppc_elf_begin_write_processing
10853 #define elf_backend_final_write_processing ppc_elf_final_write_processing
10854 #define elf_backend_write_section ppc_elf_write_section
10855 #define elf_backend_get_sec_type_attr ppc_elf_get_sec_type_attr
10856 #define elf_backend_plt_sym_val ppc_elf_plt_sym_val
10857 #define elf_backend_action_discarded ppc_elf_action_discarded
10858 #define elf_backend_init_index_section _bfd_elf_init_1_index_section
10859 #define elf_backend_lookup_section_flags_hook ppc_elf_lookup_section_flags
10860
10861 #include "elf32-target.h"
10862
10863 /* FreeBSD Target */
10864
10865 #undef TARGET_LITTLE_SYM
10866 #undef TARGET_LITTLE_NAME
10867
10868 #undef TARGET_BIG_SYM
10869 #define TARGET_BIG_SYM powerpc_elf32_fbsd_vec
10870 #undef TARGET_BIG_NAME
10871 #define TARGET_BIG_NAME "elf32-powerpc-freebsd"
10872
10873 #undef ELF_OSABI
10874 #define ELF_OSABI ELFOSABI_FREEBSD
10875
10876 #undef elf32_bed
10877 #define elf32_bed elf32_powerpc_fbsd_bed
10878
10879 #include "elf32-target.h"
10880
10881 /* VxWorks Target */
10882
10883 #undef TARGET_LITTLE_SYM
10884 #undef TARGET_LITTLE_NAME
10885
10886 #undef TARGET_BIG_SYM
10887 #define TARGET_BIG_SYM powerpc_elf32_vxworks_vec
10888 #undef TARGET_BIG_NAME
10889 #define TARGET_BIG_NAME "elf32-powerpc-vxworks"
10890
10891 #undef ELF_OSABI
10892
10893 /* VxWorks uses the elf default section flags for .plt. */
10894 static const struct bfd_elf_special_section *
10895 ppc_elf_vxworks_get_sec_type_attr (bfd *abfd, asection *sec)
10896 {
10897 if (sec->name == NULL)
10898 return NULL;
10899
10900 if (strcmp (sec->name, ".plt") == 0)
10901 return _bfd_elf_get_sec_type_attr (abfd, sec);
10902
10903 return ppc_elf_get_sec_type_attr (abfd, sec);
10904 }
10905
10906 /* Like ppc_elf_link_hash_table_create, but overrides
10907 appropriately for VxWorks. */
10908 static struct bfd_link_hash_table *
10909 ppc_elf_vxworks_link_hash_table_create (bfd *abfd)
10910 {
10911 struct bfd_link_hash_table *ret;
10912
10913 ret = ppc_elf_link_hash_table_create (abfd);
10914 if (ret)
10915 {
10916 struct ppc_elf_link_hash_table *htab
10917 = (struct ppc_elf_link_hash_table *)ret;
10918 htab->is_vxworks = 1;
10919 htab->plt_type = PLT_VXWORKS;
10920 htab->plt_entry_size = VXWORKS_PLT_ENTRY_SIZE;
10921 htab->plt_slot_size = VXWORKS_PLT_ENTRY_SIZE;
10922 htab->plt_initial_entry_size = VXWORKS_PLT_INITIAL_ENTRY_SIZE;
10923 }
10924 return ret;
10925 }
10926
10927 /* Tweak magic VxWorks symbols as they are loaded. */
10928 static bfd_boolean
10929 ppc_elf_vxworks_add_symbol_hook (bfd *abfd,
10930 struct bfd_link_info *info,
10931 Elf_Internal_Sym *sym,
10932 const char **namep,
10933 flagword *flagsp,
10934 asection **secp,
10935 bfd_vma *valp)
10936 {
10937 if (!elf_vxworks_add_symbol_hook (abfd, info, sym, namep, flagsp, secp,
10938 valp))
10939 return FALSE;
10940
10941 return ppc_elf_add_symbol_hook (abfd, info, sym, namep, flagsp, secp, valp);
10942 }
10943
10944 static void
10945 ppc_elf_vxworks_final_write_processing (bfd *abfd, bfd_boolean linker)
10946 {
10947 ppc_elf_final_write_processing (abfd, linker);
10948 elf_vxworks_final_write_processing (abfd, linker);
10949 }
10950
10951 /* On VxWorks, we emit relocations against _PROCEDURE_LINKAGE_TABLE_, so
10952 define it. */
10953 #undef elf_backend_want_plt_sym
10954 #define elf_backend_want_plt_sym 1
10955 #undef elf_backend_want_got_plt
10956 #define elf_backend_want_got_plt 1
10957 #undef elf_backend_got_symbol_offset
10958 #define elf_backend_got_symbol_offset 0
10959 #undef elf_backend_plt_not_loaded
10960 #define elf_backend_plt_not_loaded 0
10961 #undef elf_backend_plt_readonly
10962 #define elf_backend_plt_readonly 1
10963 #undef elf_backend_got_header_size
10964 #define elf_backend_got_header_size 12
10965 #undef elf_backend_dtrel_excludes_plt
10966 #define elf_backend_dtrel_excludes_plt 1
10967
10968 #undef bfd_elf32_get_synthetic_symtab
10969
10970 #undef bfd_elf32_bfd_link_hash_table_create
10971 #define bfd_elf32_bfd_link_hash_table_create \
10972 ppc_elf_vxworks_link_hash_table_create
10973 #undef elf_backend_add_symbol_hook
10974 #define elf_backend_add_symbol_hook \
10975 ppc_elf_vxworks_add_symbol_hook
10976 #undef elf_backend_link_output_symbol_hook
10977 #define elf_backend_link_output_symbol_hook \
10978 elf_vxworks_link_output_symbol_hook
10979 #undef elf_backend_final_write_processing
10980 #define elf_backend_final_write_processing \
10981 ppc_elf_vxworks_final_write_processing
10982 #undef elf_backend_get_sec_type_attr
10983 #define elf_backend_get_sec_type_attr \
10984 ppc_elf_vxworks_get_sec_type_attr
10985 #undef elf_backend_emit_relocs
10986 #define elf_backend_emit_relocs \
10987 elf_vxworks_emit_relocs
10988
10989 #undef elf32_bed
10990 #define elf32_bed ppc_elf_vxworks_bed
10991 #undef elf_backend_post_process_headers
10992
10993 #include "elf32-target.h"
A mirror of the official binutils-gdb repository