projects / deliverable / binutils-gdb.git / blob
? search:
summary | shortlog | log | commit | commitdiff | tree
blame | history | raw | HEAD
Automatic date update in version.in
[deliverable/binutils-gdb.git] / bfd / elf32-ppc.c
1 /* PowerPC-specific support for 32-bit ELF
2 Copyright (C) 1994-2015 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 "elf-linux-psinfo.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 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 bfd_elf_generic_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 bfd_elf_generic_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 bfd_elf_generic_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_addr16_ha_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 bfd_elf_generic_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 bfd_elf_generic_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 bfd_elf_generic_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 bfd_elf_generic_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 bfd_elf_generic_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 bfd_elf_generic_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 bfd_elf_generic_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 bfd_elf_generic_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_addr16_ha_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 bfd_elf_generic_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 bfd_elf_generic_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 bfd_elf_generic_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 bfd_elf_generic_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_addr16_ha_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 bfd_elf_generic_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 bfd_elf_generic_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 bfd_elf_generic_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 bfd_elf_generic_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_addr16_ha_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 bfd_elf_generic_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 bfd_elf_generic_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 bfd_elf_generic_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 bfd_elf_generic_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 bfd_elf_generic_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 0xfe, /* 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 bfd_elf_generic_reloc, /* special_function */
1456 "R_PPC_VLE_LO16A", /* name */
1457 FALSE, /* partial_inplace */
1458 0, /* src_mask */
1459 0x1f007ff, /* 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 bfd_elf_generic_reloc, /* special_function */
1471 "R_PPC_VLE_LO16D", /* name */
1472 FALSE, /* partial_inplace */
1473 0, /* src_mask */
1474 0x1f07ff, /* 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 bfd_elf_generic_reloc, /* special_function */
1486 "R_PPC_VLE_HI16A", /* name */
1487 FALSE, /* partial_inplace */
1488 0, /* src_mask */
1489 0x1f007ff, /* 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 bfd_elf_generic_reloc, /* special_function */
1501 "R_PPC_VLE_HI16D", /* name */
1502 FALSE, /* partial_inplace */
1503 0, /* src_mask */
1504 0x1f07ff, /* 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 bfd_elf_generic_reloc, /* special_function */
1516 "R_PPC_VLE_HA16A", /* name */
1517 FALSE, /* partial_inplace */
1518 0, /* src_mask */
1519 0x1f007ff, /* 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 bfd_elf_generic_reloc, /* special_function */
1531 "R_PPC_VLE_HA16D", /* name */
1532 FALSE, /* partial_inplace */
1533 0, /* src_mask */
1534 0x1f07ff, /* 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 bfd_elf_generic_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 bfd_elf_generic_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 bfd_elf_generic_reloc, /* special_function */
1578 "R_PPC_VLE_SDAREL_LO16A", /* name */
1579 FALSE, /* partial_inplace */
1580 0, /* src_mask */
1581 0x1f007ff, /* 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 bfd_elf_generic_reloc, /* special_function */
1593 "R_PPC_VLE_SDAREL_LO16D", /* name */
1594 FALSE, /* partial_inplace */
1595 0, /* src_mask */
1596 0x1f07ff, /* 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 bfd_elf_generic_reloc, /* special_function */
1608 "R_PPC_VLE_SDAREL_HI16A", /* name */
1609 FALSE, /* partial_inplace */
1610 0, /* src_mask */
1611 0x1f007ff, /* 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 bfd_elf_generic_reloc, /* special_function */
1623 "R_PPC_VLE_SDAREL_HI16D", /* name */
1624 FALSE, /* partial_inplace */
1625 0, /* src_mask */
1626 0x1f07ff, /* 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 bfd_elf_generic_reloc, /* special_function */
1638 "R_PPC_VLE_SDAREL_HA16A", /* name */
1639 FALSE, /* partial_inplace */
1640 0, /* src_mask */
1641 0x1f007ff, /* 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 bfd_elf_generic_reloc, /* special_function */
1653 "R_PPC_VLE_SDAREL_HA16D", /* name */
1654 FALSE, /* partial_inplace */
1655 0, /* src_mask */
1656 0x1f07ff, /* dst_mask */
1657 FALSE), /* pcrel_offset */
1658
1659 HOWTO (R_PPC_IRELATIVE, /* type */
1660 0, /* rightshift */
1661 2, /* size (0 = byte, 1 = short, 2 = long) */
1662 32, /* bitsize */
1663 FALSE, /* pc_relative */
1664 0, /* bitpos */
1665 complain_overflow_dont, /* complain_on_overflow */
1666 bfd_elf_generic_reloc, /* special_function */
1667 "R_PPC_IRELATIVE", /* name */
1668 FALSE, /* partial_inplace */
1669 0, /* src_mask */
1670 0xffffffff, /* dst_mask */
1671 FALSE), /* pcrel_offset */
1672
1673 /* A 16 bit relative relocation. */
1674 HOWTO (R_PPC_REL16, /* type */
1675 0, /* rightshift */
1676 1, /* size (0 = byte, 1 = short, 2 = long) */
1677 16, /* bitsize */
1678 TRUE, /* pc_relative */
1679 0, /* bitpos */
1680 complain_overflow_signed, /* complain_on_overflow */
1681 bfd_elf_generic_reloc, /* special_function */
1682 "R_PPC_REL16", /* name */
1683 FALSE, /* partial_inplace */
1684 0, /* src_mask */
1685 0xffff, /* dst_mask */
1686 TRUE), /* pcrel_offset */
1687
1688 /* A 16 bit relative relocation without overflow. */
1689 HOWTO (R_PPC_REL16_LO, /* 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_dont,/* complain_on_overflow */
1696 bfd_elf_generic_reloc, /* special_function */
1697 "R_PPC_REL16_LO", /* name */
1698 FALSE, /* partial_inplace */
1699 0, /* src_mask */
1700 0xffff, /* dst_mask */
1701 TRUE), /* pcrel_offset */
1702
1703 /* The high order 16 bits of a relative address. */
1704 HOWTO (R_PPC_REL16_HI, /* type */
1705 16, /* 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_HI", /* 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, plus 1 if the contents of
1719 the low 16 bits, treated as a signed number, is negative. */
1720 HOWTO (R_PPC_REL16_HA, /* type */
1721 16, /* rightshift */
1722 1, /* size (0 = byte, 1 = short, 2 = long) */
1723 16, /* bitsize */
1724 TRUE, /* pc_relative */
1725 0, /* bitpos */
1726 complain_overflow_dont, /* complain_on_overflow */
1727 ppc_elf_addr16_ha_reloc, /* special_function */
1728 "R_PPC_REL16_HA", /* name */
1729 FALSE, /* partial_inplace */
1730 0, /* src_mask */
1731 0xffff, /* dst_mask */
1732 TRUE), /* pcrel_offset */
1733
1734 /* GNU extension to record C++ vtable hierarchy. */
1735 HOWTO (R_PPC_GNU_VTINHERIT, /* type */
1736 0, /* rightshift */
1737 0, /* size (0 = byte, 1 = short, 2 = long) */
1738 0, /* bitsize */
1739 FALSE, /* pc_relative */
1740 0, /* bitpos */
1741 complain_overflow_dont, /* complain_on_overflow */
1742 NULL, /* special_function */
1743 "R_PPC_GNU_VTINHERIT", /* name */
1744 FALSE, /* partial_inplace */
1745 0, /* src_mask */
1746 0, /* dst_mask */
1747 FALSE), /* pcrel_offset */
1748
1749 /* GNU extension to record C++ vtable member usage. */
1750 HOWTO (R_PPC_GNU_VTENTRY, /* type */
1751 0, /* rightshift */
1752 0, /* size (0 = byte, 1 = short, 2 = long) */
1753 0, /* bitsize */
1754 FALSE, /* pc_relative */
1755 0, /* bitpos */
1756 complain_overflow_dont, /* complain_on_overflow */
1757 NULL, /* special_function */
1758 "R_PPC_GNU_VTENTRY", /* name */
1759 FALSE, /* partial_inplace */
1760 0, /* src_mask */
1761 0, /* dst_mask */
1762 FALSE), /* pcrel_offset */
1763
1764 /* Phony reloc to handle AIX style TOC entries. */
1765 HOWTO (R_PPC_TOC16, /* type */
1766 0, /* rightshift */
1767 1, /* 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 bfd_elf_generic_reloc, /* special_function */
1773 "R_PPC_TOC16", /* name */
1774 FALSE, /* partial_inplace */
1775 0, /* src_mask */
1776 0xffff, /* dst_mask */
1777 FALSE), /* pcrel_offset */
1778 };
1779
1780 /* External 32-bit PPC structure for PRPSINFO. This structure is
1781 ABI-defined, thus we choose to use char arrays here in order to
1782 avoid dealing with different types in different architectures.
1783
1784 The PPC 32-bit structure uses int for `pr_uid' and `pr_gid' while
1785 most non-PPC architectures use `short int'.
1786
1787 This structure will ultimately be written in the corefile's note
1788 section, as the PRPSINFO. */
1789
1790 struct elf_external_ppc_linux_prpsinfo32
1791 {
1792 char pr_state; /* Numeric process state. */
1793 char pr_sname; /* Char for pr_state. */
1794 char pr_zomb; /* Zombie. */
1795 char pr_nice; /* Nice val. */
1796 char pr_flag[4]; /* Flags. */
1797 char pr_uid[4];
1798 char pr_gid[4];
1799 char pr_pid[4];
1800 char pr_ppid[4];
1801 char pr_pgrp[4];
1802 char pr_sid[4];
1803 char pr_fname[16]; /* Filename of executable. */
1804 char pr_psargs[80]; /* Initial part of arg list. */
1805 };
1806
1807 /* Helper macro to swap (properly handling endianess) things from the
1808 `elf_internal_prpsinfo' structure to the `elf_external_ppc_prpsinfo32'
1809 structure.
1810
1811 Note that FROM should be a pointer, and TO should be the explicit type. */
1812
1813 #define PPC_LINUX_PRPSINFO32_SWAP_FIELDS(abfd, from, to) \
1814 do \
1815 { \
1816 H_PUT_8 (abfd, from->pr_state, &to.pr_state); \
1817 H_PUT_8 (abfd, from->pr_sname, &to.pr_sname); \
1818 H_PUT_8 (abfd, from->pr_zomb, &to.pr_zomb); \
1819 H_PUT_8 (abfd, from->pr_nice, &to.pr_nice); \
1820 H_PUT_32 (abfd, from->pr_flag, to.pr_flag); \
1821 H_PUT_32 (abfd, from->pr_uid, to.pr_uid); \
1822 H_PUT_32 (abfd, from->pr_gid, to.pr_gid); \
1823 H_PUT_32 (abfd, from->pr_pid, to.pr_pid); \
1824 H_PUT_32 (abfd, from->pr_ppid, to.pr_ppid); \
1825 H_PUT_32 (abfd, from->pr_pgrp, to.pr_pgrp); \
1826 H_PUT_32 (abfd, from->pr_sid, to.pr_sid); \
1827 strncpy (to.pr_fname, from->pr_fname, sizeof (to.pr_fname)); \
1828 strncpy (to.pr_psargs, from->pr_psargs, sizeof (to.pr_psargs)); \
1829 } while (0)
1830
1831 \f
1832 /* Initialize the ppc_elf_howto_table, so that linear accesses can be done. */
1833
1834 static void
1835 ppc_elf_howto_init (void)
1836 {
1837 unsigned int i, type;
1838
1839 for (i = 0;
1840 i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]);
1841 i++)
1842 {
1843 type = ppc_elf_howto_raw[i].type;
1844 if (type >= (sizeof (ppc_elf_howto_table)
1845 / sizeof (ppc_elf_howto_table[0])))
1846 abort ();
1847 ppc_elf_howto_table[type] = &ppc_elf_howto_raw[i];
1848 }
1849 }
1850
1851 static reloc_howto_type *
1852 ppc_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1853 bfd_reloc_code_real_type code)
1854 {
1855 enum elf_ppc_reloc_type r;
1856
1857 /* Initialize howto table if not already done. */
1858 if (!ppc_elf_howto_table[R_PPC_ADDR32])
1859 ppc_elf_howto_init ();
1860
1861 switch (code)
1862 {
1863 default:
1864 return NULL;
1865
1866 case BFD_RELOC_NONE: r = R_PPC_NONE; break;
1867 case BFD_RELOC_32: r = R_PPC_ADDR32; break;
1868 case BFD_RELOC_PPC_BA26: r = R_PPC_ADDR24; break;
1869 case BFD_RELOC_PPC64_ADDR16_DS:
1870 case BFD_RELOC_16: r = R_PPC_ADDR16; break;
1871 case BFD_RELOC_PPC64_ADDR16_LO_DS:
1872 case BFD_RELOC_LO16: r = R_PPC_ADDR16_LO; break;
1873 case BFD_RELOC_HI16: r = R_PPC_ADDR16_HI; break;
1874 case BFD_RELOC_HI16_S: r = R_PPC_ADDR16_HA; break;
1875 case BFD_RELOC_PPC_BA16: r = R_PPC_ADDR14; break;
1876 case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC_ADDR14_BRTAKEN; break;
1877 case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC_ADDR14_BRNTAKEN; break;
1878 case BFD_RELOC_PPC_B26: r = R_PPC_REL24; break;
1879 case BFD_RELOC_PPC_B16: r = R_PPC_REL14; break;
1880 case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC_REL14_BRTAKEN; break;
1881 case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC_REL14_BRNTAKEN; break;
1882 case BFD_RELOC_PPC64_GOT16_DS:
1883 case BFD_RELOC_16_GOTOFF: r = R_PPC_GOT16; break;
1884 case BFD_RELOC_PPC64_GOT16_LO_DS:
1885 case BFD_RELOC_LO16_GOTOFF: r = R_PPC_GOT16_LO; break;
1886 case BFD_RELOC_HI16_GOTOFF: r = R_PPC_GOT16_HI; break;
1887 case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC_GOT16_HA; break;
1888 case BFD_RELOC_24_PLT_PCREL: r = R_PPC_PLTREL24; break;
1889 case BFD_RELOC_PPC_COPY: r = R_PPC_COPY; break;
1890 case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC_GLOB_DAT; break;
1891 case BFD_RELOC_PPC_LOCAL24PC: r = R_PPC_LOCAL24PC; break;
1892 case BFD_RELOC_32_PCREL: r = R_PPC_REL32; break;
1893 case BFD_RELOC_32_PLTOFF: r = R_PPC_PLT32; break;
1894 case BFD_RELOC_32_PLT_PCREL: r = R_PPC_PLTREL32; break;
1895 case BFD_RELOC_PPC64_PLT16_LO_DS:
1896 case BFD_RELOC_LO16_PLTOFF: r = R_PPC_PLT16_LO; break;
1897 case BFD_RELOC_HI16_PLTOFF: r = R_PPC_PLT16_HI; break;
1898 case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC_PLT16_HA; break;
1899 case BFD_RELOC_GPREL16: r = R_PPC_SDAREL16; break;
1900 case BFD_RELOC_PPC64_SECTOFF_DS:
1901 case BFD_RELOC_16_BASEREL: r = R_PPC_SECTOFF; break;
1902 case BFD_RELOC_PPC64_SECTOFF_LO_DS:
1903 case BFD_RELOC_LO16_BASEREL: r = R_PPC_SECTOFF_LO; break;
1904 case BFD_RELOC_HI16_BASEREL: r = R_PPC_SECTOFF_HI; break;
1905 case BFD_RELOC_HI16_S_BASEREL: r = R_PPC_SECTOFF_HA; break;
1906 case BFD_RELOC_CTOR: r = R_PPC_ADDR32; break;
1907 case BFD_RELOC_PPC64_TOC16_DS:
1908 case BFD_RELOC_PPC_TOC16: r = R_PPC_TOC16; break;
1909 case BFD_RELOC_PPC_TLS: r = R_PPC_TLS; break;
1910 case BFD_RELOC_PPC_TLSGD: r = R_PPC_TLSGD; break;
1911 case BFD_RELOC_PPC_TLSLD: r = R_PPC_TLSLD; break;
1912 case BFD_RELOC_PPC_DTPMOD: r = R_PPC_DTPMOD32; break;
1913 case BFD_RELOC_PPC64_TPREL16_DS:
1914 case BFD_RELOC_PPC_TPREL16: r = R_PPC_TPREL16; break;
1915 case BFD_RELOC_PPC64_TPREL16_LO_DS:
1916 case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC_TPREL16_LO; break;
1917 case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC_TPREL16_HI; break;
1918 case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC_TPREL16_HA; break;
1919 case BFD_RELOC_PPC_TPREL: r = R_PPC_TPREL32; break;
1920 case BFD_RELOC_PPC64_DTPREL16_DS:
1921 case BFD_RELOC_PPC_DTPREL16: r = R_PPC_DTPREL16; break;
1922 case BFD_RELOC_PPC64_DTPREL16_LO_DS:
1923 case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC_DTPREL16_LO; break;
1924 case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC_DTPREL16_HI; break;
1925 case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC_DTPREL16_HA; break;
1926 case BFD_RELOC_PPC_DTPREL: r = R_PPC_DTPREL32; break;
1927 case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC_GOT_TLSGD16; break;
1928 case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC_GOT_TLSGD16_LO; break;
1929 case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC_GOT_TLSGD16_HI; break;
1930 case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC_GOT_TLSGD16_HA; break;
1931 case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC_GOT_TLSLD16; break;
1932 case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC_GOT_TLSLD16_LO; break;
1933 case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC_GOT_TLSLD16_HI; break;
1934 case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC_GOT_TLSLD16_HA; break;
1935 case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC_GOT_TPREL16; break;
1936 case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC_GOT_TPREL16_LO; break;
1937 case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC_GOT_TPREL16_HI; break;
1938 case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC_GOT_TPREL16_HA; break;
1939 case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC_GOT_DTPREL16; break;
1940 case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC_GOT_DTPREL16_LO; break;
1941 case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC_GOT_DTPREL16_HI; break;
1942 case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC_GOT_DTPREL16_HA; break;
1943 case BFD_RELOC_PPC_EMB_NADDR32: r = R_PPC_EMB_NADDR32; break;
1944 case BFD_RELOC_PPC_EMB_NADDR16: r = R_PPC_EMB_NADDR16; break;
1945 case BFD_RELOC_PPC_EMB_NADDR16_LO: r = R_PPC_EMB_NADDR16_LO; break;
1946 case BFD_RELOC_PPC_EMB_NADDR16_HI: r = R_PPC_EMB_NADDR16_HI; break;
1947 case BFD_RELOC_PPC_EMB_NADDR16_HA: r = R_PPC_EMB_NADDR16_HA; break;
1948 case BFD_RELOC_PPC_EMB_SDAI16: r = R_PPC_EMB_SDAI16; break;
1949 case BFD_RELOC_PPC_EMB_SDA2I16: r = R_PPC_EMB_SDA2I16; break;
1950 case BFD_RELOC_PPC_EMB_SDA2REL: r = R_PPC_EMB_SDA2REL; break;
1951 case BFD_RELOC_PPC_EMB_SDA21: r = R_PPC_EMB_SDA21; break;
1952 case BFD_RELOC_PPC_EMB_MRKREF: r = R_PPC_EMB_MRKREF; break;
1953 case BFD_RELOC_PPC_EMB_RELSEC16: r = R_PPC_EMB_RELSEC16; break;
1954 case BFD_RELOC_PPC_EMB_RELST_LO: r = R_PPC_EMB_RELST_LO; break;
1955 case BFD_RELOC_PPC_EMB_RELST_HI: r = R_PPC_EMB_RELST_HI; break;
1956 case BFD_RELOC_PPC_EMB_RELST_HA: r = R_PPC_EMB_RELST_HA; break;
1957 case BFD_RELOC_PPC_EMB_BIT_FLD: r = R_PPC_EMB_BIT_FLD; break;
1958 case BFD_RELOC_PPC_EMB_RELSDA: r = R_PPC_EMB_RELSDA; break;
1959 case BFD_RELOC_PPC_VLE_REL8: r = R_PPC_VLE_REL8; break;
1960 case BFD_RELOC_PPC_VLE_REL15: r = R_PPC_VLE_REL15; break;
1961 case BFD_RELOC_PPC_VLE_REL24: r = R_PPC_VLE_REL24; break;
1962 case BFD_RELOC_PPC_VLE_LO16A: r = R_PPC_VLE_LO16A; break;
1963 case BFD_RELOC_PPC_VLE_LO16D: r = R_PPC_VLE_LO16D; break;
1964 case BFD_RELOC_PPC_VLE_HI16A: r = R_PPC_VLE_HI16A; break;
1965 case BFD_RELOC_PPC_VLE_HI16D: r = R_PPC_VLE_HI16D; break;
1966 case BFD_RELOC_PPC_VLE_HA16A: r = R_PPC_VLE_HA16A; break;
1967 case BFD_RELOC_PPC_VLE_HA16D: r = R_PPC_VLE_HA16D; break;
1968 case BFD_RELOC_PPC_VLE_SDA21: r = R_PPC_VLE_SDA21; break;
1969 case BFD_RELOC_PPC_VLE_SDA21_LO: r = R_PPC_VLE_SDA21_LO; break;
1970 case BFD_RELOC_PPC_VLE_SDAREL_LO16A:
1971 r = R_PPC_VLE_SDAREL_LO16A;
1972 break;
1973 case BFD_RELOC_PPC_VLE_SDAREL_LO16D:
1974 r = R_PPC_VLE_SDAREL_LO16D;
1975 break;
1976 case BFD_RELOC_PPC_VLE_SDAREL_HI16A:
1977 r = R_PPC_VLE_SDAREL_HI16A;
1978 break;
1979 case BFD_RELOC_PPC_VLE_SDAREL_HI16D:
1980 r = R_PPC_VLE_SDAREL_HI16D;
1981 break;
1982 case BFD_RELOC_PPC_VLE_SDAREL_HA16A:
1983 r = R_PPC_VLE_SDAREL_HA16A;
1984 break;
1985 case BFD_RELOC_PPC_VLE_SDAREL_HA16D:
1986 r = R_PPC_VLE_SDAREL_HA16D;
1987 break;
1988 case BFD_RELOC_16_PCREL: r = R_PPC_REL16; break;
1989 case BFD_RELOC_LO16_PCREL: r = R_PPC_REL16_LO; break;
1990 case BFD_RELOC_HI16_PCREL: r = R_PPC_REL16_HI; break;
1991 case BFD_RELOC_HI16_S_PCREL: r = R_PPC_REL16_HA; break;
1992 case BFD_RELOC_VTABLE_INHERIT: r = R_PPC_GNU_VTINHERIT; break;
1993 case BFD_RELOC_VTABLE_ENTRY: r = R_PPC_GNU_VTENTRY; break;
1994 }
1995
1996 return ppc_elf_howto_table[r];
1997 };
1998
1999 static reloc_howto_type *
2000 ppc_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
2001 const char *r_name)
2002 {
2003 unsigned int i;
2004
2005 for (i = 0;
2006 i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]);
2007 i++)
2008 if (ppc_elf_howto_raw[i].name != NULL
2009 && strcasecmp (ppc_elf_howto_raw[i].name, r_name) == 0)
2010 return &ppc_elf_howto_raw[i];
2011
2012 return NULL;
2013 }
2014
2015 /* Set the howto pointer for a PowerPC ELF reloc. */
2016
2017 static void
2018 ppc_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED,
2019 arelent *cache_ptr,
2020 Elf_Internal_Rela *dst)
2021 {
2022 unsigned int r_type;
2023
2024 /* Initialize howto table if not already done. */
2025 if (!ppc_elf_howto_table[R_PPC_ADDR32])
2026 ppc_elf_howto_init ();
2027
2028 r_type = ELF32_R_TYPE (dst->r_info);
2029 if (r_type >= R_PPC_max)
2030 {
2031 (*_bfd_error_handler) (_("%B: unrecognised PPC reloc number: %d"),
2032 abfd, r_type);
2033 bfd_set_error (bfd_error_bad_value);
2034 r_type = R_PPC_NONE;
2035 }
2036 cache_ptr->howto = ppc_elf_howto_table[r_type];
2037
2038 /* Just because the above assert didn't trigger doesn't mean that
2039 ELF32_R_TYPE (dst->r_info) is necessarily a valid relocation. */
2040 if (!cache_ptr->howto)
2041 {
2042 (*_bfd_error_handler) (_("%B: invalid relocation type %d"),
2043 abfd, r_type);
2044 bfd_set_error (bfd_error_bad_value);
2045
2046 cache_ptr->howto = ppc_elf_howto_table[R_PPC_NONE];
2047 }
2048 }
2049
2050 /* Handle the R_PPC_ADDR16_HA and R_PPC_REL16_HA relocs. */
2051
2052 static bfd_reloc_status_type
2053 ppc_elf_addr16_ha_reloc (bfd *abfd ATTRIBUTE_UNUSED,
2054 arelent *reloc_entry,
2055 asymbol *symbol,
2056 void *data ATTRIBUTE_UNUSED,
2057 asection *input_section,
2058 bfd *output_bfd,
2059 char **error_message ATTRIBUTE_UNUSED)
2060 {
2061 bfd_vma relocation;
2062
2063 if (output_bfd != NULL)
2064 {
2065 reloc_entry->address += input_section->output_offset;
2066 return bfd_reloc_ok;
2067 }
2068
2069 if (bfd_is_com_section (symbol->section))
2070 relocation = 0;
2071 else
2072 relocation = symbol->value;
2073
2074 relocation += symbol->section->output_section->vma;
2075 relocation += symbol->section->output_offset;
2076 relocation += reloc_entry->addend;
2077 if (reloc_entry->howto->pc_relative)
2078 relocation -= reloc_entry->address;
2079
2080 reloc_entry->addend += (relocation & 0x8000) << 1;
2081
2082 return bfd_reloc_continue;
2083 }
2084
2085 static bfd_reloc_status_type
2086 ppc_elf_unhandled_reloc (bfd *abfd,
2087 arelent *reloc_entry,
2088 asymbol *symbol,
2089 void *data,
2090 asection *input_section,
2091 bfd *output_bfd,
2092 char **error_message)
2093 {
2094 /* If this is a relocatable link (output_bfd test tells us), just
2095 call the generic function. Any adjustment will be done at final
2096 link time. */
2097 if (output_bfd != NULL)
2098 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2099 input_section, output_bfd, error_message);
2100
2101 if (error_message != NULL)
2102 {
2103 static char buf[60];
2104 sprintf (buf, _("generic linker can't handle %s"),
2105 reloc_entry->howto->name);
2106 *error_message = buf;
2107 }
2108 return bfd_reloc_dangerous;
2109 }
2110 \f
2111 /* Sections created by the linker. */
2112
2113 typedef struct elf_linker_section
2114 {
2115 /* Pointer to the bfd section. */
2116 asection *section;
2117 /* Section name. */
2118 const char *name;
2119 /* Associated bss section name. */
2120 const char *bss_name;
2121 /* Associated symbol name. */
2122 const char *sym_name;
2123 /* Associated symbol. */
2124 struct elf_link_hash_entry *sym;
2125 } elf_linker_section_t;
2126
2127 /* Linked list of allocated pointer entries. This hangs off of the
2128 symbol lists, and provides allows us to return different pointers,
2129 based on different addend's. */
2130
2131 typedef struct elf_linker_section_pointers
2132 {
2133 /* next allocated pointer for this symbol */
2134 struct elf_linker_section_pointers *next;
2135 /* offset of pointer from beginning of section */
2136 bfd_vma offset;
2137 /* addend used */
2138 bfd_vma addend;
2139 /* which linker section this is */
2140 elf_linker_section_t *lsect;
2141 } elf_linker_section_pointers_t;
2142
2143 struct ppc_elf_obj_tdata
2144 {
2145 struct elf_obj_tdata elf;
2146
2147 /* A mapping from local symbols to offsets into the various linker
2148 sections added. This is index by the symbol index. */
2149 elf_linker_section_pointers_t **linker_section_pointers;
2150
2151 /* Flags used to auto-detect plt type. */
2152 unsigned int makes_plt_call : 1;
2153 unsigned int has_rel16 : 1;
2154 };
2155
2156 #define ppc_elf_tdata(bfd) \
2157 ((struct ppc_elf_obj_tdata *) (bfd)->tdata.any)
2158
2159 #define elf_local_ptr_offsets(bfd) \
2160 (ppc_elf_tdata (bfd)->linker_section_pointers)
2161
2162 #define is_ppc_elf(bfd) \
2163 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
2164 && elf_object_id (bfd) == PPC32_ELF_DATA)
2165
2166 /* Override the generic function because we store some extras. */
2167
2168 static bfd_boolean
2169 ppc_elf_mkobject (bfd *abfd)
2170 {
2171 return bfd_elf_allocate_object (abfd, sizeof (struct ppc_elf_obj_tdata),
2172 PPC32_ELF_DATA);
2173 }
2174
2175 /* Fix bad default arch selected for a 32 bit input bfd when the
2176 default is 64 bit. */
2177
2178 static bfd_boolean
2179 ppc_elf_object_p (bfd *abfd)
2180 {
2181 if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 64)
2182 {
2183 Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd);
2184
2185 if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS32)
2186 {
2187 /* Relies on arch after 64 bit default being 32 bit default. */
2188 abfd->arch_info = abfd->arch_info->next;
2189 BFD_ASSERT (abfd->arch_info->bits_per_word == 32);
2190 }
2191 }
2192 return TRUE;
2193 }
2194
2195 /* Function to set whether a module needs the -mrelocatable bit set. */
2196
2197 static bfd_boolean
2198 ppc_elf_set_private_flags (bfd *abfd, flagword flags)
2199 {
2200 BFD_ASSERT (!elf_flags_init (abfd)
2201 || elf_elfheader (abfd)->e_flags == flags);
2202
2203 elf_elfheader (abfd)->e_flags = flags;
2204 elf_flags_init (abfd) = TRUE;
2205 return TRUE;
2206 }
2207
2208 /* Support for core dump NOTE sections. */
2209
2210 static bfd_boolean
2211 ppc_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
2212 {
2213 int offset;
2214 unsigned int size;
2215
2216 switch (note->descsz)
2217 {
2218 default:
2219 return FALSE;
2220
2221 case 268: /* Linux/PPC. */
2222 /* pr_cursig */
2223 elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12);
2224
2225 /* pr_pid */
2226 elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 24);
2227
2228 /* pr_reg */
2229 offset = 72;
2230 size = 192;
2231
2232 break;
2233 }
2234
2235 /* Make a ".reg/999" section. */
2236 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
2237 size, note->descpos + offset);
2238 }
2239
2240 static bfd_boolean
2241 ppc_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
2242 {
2243 switch (note->descsz)
2244 {
2245 default:
2246 return FALSE;
2247
2248 case 128: /* Linux/PPC elf_prpsinfo. */
2249 elf_tdata (abfd)->core->pid
2250 = bfd_get_32 (abfd, note->descdata + 16);
2251 elf_tdata (abfd)->core->program
2252 = _bfd_elfcore_strndup (abfd, note->descdata + 32, 16);
2253 elf_tdata (abfd)->core->command
2254 = _bfd_elfcore_strndup (abfd, note->descdata + 48, 80);
2255 }
2256
2257 /* Note that for some reason, a spurious space is tacked
2258 onto the end of the args in some (at least one anyway)
2259 implementations, so strip it off if it exists. */
2260
2261 {
2262 char *command = elf_tdata (abfd)->core->command;
2263 int n = strlen (command);
2264
2265 if (0 < n && command[n - 1] == ' ')
2266 command[n - 1] = '\0';
2267 }
2268
2269 return TRUE;
2270 }
2271
2272 char *
2273 elfcore_write_ppc_linux_prpsinfo32 (bfd *abfd, char *buf, int *bufsiz,
2274 const struct elf_internal_linux_prpsinfo *prpsinfo)
2275 {
2276 struct elf_external_ppc_linux_prpsinfo32 data;
2277
2278 memset (&data, 0, sizeof (data));
2279 PPC_LINUX_PRPSINFO32_SWAP_FIELDS (abfd, prpsinfo, data);
2280
2281 return elfcore_write_note (abfd, buf, bufsiz,
2282 "CORE", NT_PRPSINFO, &data, sizeof (data));
2283 }
2284
2285 static char *
2286 ppc_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type, ...)
2287 {
2288 switch (note_type)
2289 {
2290 default:
2291 return NULL;
2292
2293 case NT_PRPSINFO:
2294 {
2295 char data[128];
2296 va_list ap;
2297
2298 va_start (ap, note_type);
2299 memset (data, 0, sizeof (data));
2300 strncpy (data + 32, va_arg (ap, const char *), 16);
2301 strncpy (data + 48, va_arg (ap, const char *), 80);
2302 va_end (ap);
2303 return elfcore_write_note (abfd, buf, bufsiz,
2304 "CORE", note_type, data, sizeof (data));
2305 }
2306
2307 case NT_PRSTATUS:
2308 {
2309 char data[268];
2310 va_list ap;
2311 long pid;
2312 int cursig;
2313 const void *greg;
2314
2315 va_start (ap, note_type);
2316 memset (data, 0, 72);
2317 pid = va_arg (ap, long);
2318 bfd_put_32 (abfd, pid, data + 24);
2319 cursig = va_arg (ap, int);
2320 bfd_put_16 (abfd, cursig, data + 12);
2321 greg = va_arg (ap, const void *);
2322 memcpy (data + 72, greg, 192);
2323 memset (data + 264, 0, 4);
2324 va_end (ap);
2325 return elfcore_write_note (abfd, buf, bufsiz,
2326 "CORE", note_type, data, sizeof (data));
2327 }
2328 }
2329 }
2330
2331 static flagword
2332 ppc_elf_lookup_section_flags (char *flag_name)
2333 {
2334
2335 if (!strcmp (flag_name, "SHF_PPC_VLE"))
2336 return SHF_PPC_VLE;
2337
2338 return 0;
2339 }
2340
2341 /* Add the VLE flag if required. */
2342
2343 bfd_boolean
2344 ppc_elf_section_processing (bfd *abfd, Elf_Internal_Shdr *shdr)
2345 {
2346 if (bfd_get_mach (abfd) == bfd_mach_ppc_vle
2347 && (shdr->sh_flags & SHF_EXECINSTR) != 0)
2348 shdr->sh_flags |= SHF_PPC_VLE;
2349
2350 return TRUE;
2351 }
2352
2353 /* Return address for Ith PLT stub in section PLT, for relocation REL
2354 or (bfd_vma) -1 if it should not be included. */
2355
2356 static bfd_vma
2357 ppc_elf_plt_sym_val (bfd_vma i ATTRIBUTE_UNUSED,
2358 const asection *plt ATTRIBUTE_UNUSED,
2359 const arelent *rel)
2360 {
2361 return rel->address;
2362 }
2363
2364 /* Handle a PowerPC specific section when reading an object file. This
2365 is called when bfd_section_from_shdr finds a section with an unknown
2366 type. */
2367
2368 static bfd_boolean
2369 ppc_elf_section_from_shdr (bfd *abfd,
2370 Elf_Internal_Shdr *hdr,
2371 const char *name,
2372 int shindex)
2373 {
2374 asection *newsect;
2375 flagword flags;
2376
2377 if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
2378 return FALSE;
2379
2380 newsect = hdr->bfd_section;
2381 flags = bfd_get_section_flags (abfd, newsect);
2382 if (hdr->sh_flags & SHF_EXCLUDE)
2383 flags |= SEC_EXCLUDE;
2384
2385 if (hdr->sh_type == SHT_ORDERED)
2386 flags |= SEC_SORT_ENTRIES;
2387
2388 bfd_set_section_flags (abfd, newsect, flags);
2389 return TRUE;
2390 }
2391
2392 /* Set up any other section flags and such that may be necessary. */
2393
2394 static bfd_boolean
2395 ppc_elf_fake_sections (bfd *abfd ATTRIBUTE_UNUSED,
2396 Elf_Internal_Shdr *shdr,
2397 asection *asect)
2398 {
2399 if ((asect->flags & SEC_SORT_ENTRIES) != 0)
2400 shdr->sh_type = SHT_ORDERED;
2401
2402 return TRUE;
2403 }
2404
2405 /* If we have .sbss2 or .PPC.EMB.sbss0 output sections, we
2406 need to bump up the number of section headers. */
2407
2408 static int
2409 ppc_elf_additional_program_headers (bfd *abfd,
2410 struct bfd_link_info *info ATTRIBUTE_UNUSED)
2411 {
2412 asection *s;
2413 int ret = 0;
2414
2415 s = bfd_get_section_by_name (abfd, ".sbss2");
2416 if (s != NULL && (s->flags & SEC_ALLOC) != 0)
2417 ++ret;
2418
2419 s = bfd_get_section_by_name (abfd, ".PPC.EMB.sbss0");
2420 if (s != NULL && (s->flags & SEC_ALLOC) != 0)
2421 ++ret;
2422
2423 return ret;
2424 }
2425
2426 /* Modify the segment map for VLE executables. */
2427
2428 bfd_boolean
2429 ppc_elf_modify_segment_map (bfd *abfd,
2430 struct bfd_link_info *info ATTRIBUTE_UNUSED)
2431 {
2432 struct elf_segment_map *m, *n;
2433 bfd_size_type amt;
2434 unsigned int j, k;
2435 bfd_boolean sect0_vle, sectj_vle;
2436
2437 /* At this point in the link, output sections have already been sorted by
2438 LMA and assigned to segments. All that is left to do is to ensure
2439 there is no mixing of VLE & non-VLE sections in a text segment.
2440 If we find that case, we split the segment.
2441 We maintain the original output section order. */
2442
2443 for (m = elf_seg_map (abfd); m != NULL; m = m->next)
2444 {
2445 if (m->count == 0)
2446 continue;
2447
2448 sect0_vle = (elf_section_flags (m->sections[0]) & SHF_PPC_VLE) != 0;
2449 for (j = 1; j < m->count; ++j)
2450 {
2451 sectj_vle = (elf_section_flags (m->sections[j]) & SHF_PPC_VLE) != 0;
2452
2453 if (sectj_vle != sect0_vle)
2454 break;
2455 }
2456 if (j >= m->count)
2457 continue;
2458
2459 /* sections 0..j-1 stay in this (current) segment,
2460 the remainder are put in a new segment.
2461 The scan resumes with the new segment. */
2462
2463 /* Fix the new segment. */
2464 amt = sizeof (struct elf_segment_map);
2465 amt += (m->count - j - 1) * sizeof (asection *);
2466 n = (struct elf_segment_map *) bfd_zalloc (abfd, amt);
2467 if (n == NULL)
2468 return FALSE;
2469
2470 n->p_type = PT_LOAD;
2471 n->p_flags = PF_X | PF_R;
2472 if (sectj_vle)
2473 n->p_flags |= PF_PPC_VLE;
2474 n->count = m->count - j;
2475 for (k = 0; k < n->count; ++k)
2476 {
2477 n->sections[k] = m->sections[j+k];
2478 m->sections[j+k] = NULL;
2479 }
2480 n->next = m->next;
2481 m->next = n;
2482
2483 /* Fix the current segment */
2484 m->count = j;
2485 }
2486
2487 return TRUE;
2488 }
2489
2490 /* Add extra PPC sections -- Note, for now, make .sbss2 and
2491 .PPC.EMB.sbss0 a normal section, and not a bss section so
2492 that the linker doesn't crater when trying to make more than
2493 2 sections. */
2494
2495 static const struct bfd_elf_special_section ppc_elf_special_sections[] =
2496 {
2497 { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, SHF_ALLOC + SHF_EXECINSTR },
2498 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2499 { STRING_COMMA_LEN (".sbss2"), -2, SHT_PROGBITS, SHF_ALLOC },
2500 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2501 { STRING_COMMA_LEN (".sdata2"), -2, SHT_PROGBITS, SHF_ALLOC },
2502 { STRING_COMMA_LEN (".tags"), 0, SHT_ORDERED, SHF_ALLOC },
2503 { STRING_COMMA_LEN (".PPC.EMB.apuinfo"), 0, SHT_NOTE, 0 },
2504 { STRING_COMMA_LEN (".PPC.EMB.sbss0"), 0, SHT_PROGBITS, SHF_ALLOC },
2505 { STRING_COMMA_LEN (".PPC.EMB.sdata0"), 0, SHT_PROGBITS, SHF_ALLOC },
2506 { NULL, 0, 0, 0, 0 }
2507 };
2508
2509 /* This is what we want for new plt/got. */
2510 static struct bfd_elf_special_section ppc_alt_plt =
2511 { STRING_COMMA_LEN (".plt"), 0, SHT_PROGBITS, SHF_ALLOC };
2512
2513 static const struct bfd_elf_special_section *
2514 ppc_elf_get_sec_type_attr (bfd *abfd ATTRIBUTE_UNUSED, asection *sec)
2515 {
2516 const struct bfd_elf_special_section *ssect;
2517
2518 /* See if this is one of the special sections. */
2519 if (sec->name == NULL)
2520 return NULL;
2521
2522 ssect = _bfd_elf_get_special_section (sec->name, ppc_elf_special_sections,
2523 sec->use_rela_p);
2524 if (ssect != NULL)
2525 {
2526 if (ssect == ppc_elf_special_sections && (sec->flags & SEC_LOAD) != 0)
2527 ssect = &ppc_alt_plt;
2528 return ssect;
2529 }
2530
2531 return _bfd_elf_get_sec_type_attr (abfd, sec);
2532 }
2533 \f
2534 /* Very simple linked list structure for recording apuinfo values. */
2535 typedef struct apuinfo_list
2536 {
2537 struct apuinfo_list *next;
2538 unsigned long value;
2539 }
2540 apuinfo_list;
2541
2542 static apuinfo_list *head;
2543 static bfd_boolean apuinfo_set;
2544
2545 static void
2546 apuinfo_list_init (void)
2547 {
2548 head = NULL;
2549 apuinfo_set = FALSE;
2550 }
2551
2552 static void
2553 apuinfo_list_add (unsigned long value)
2554 {
2555 apuinfo_list *entry = head;
2556
2557 while (entry != NULL)
2558 {
2559 if (entry->value == value)
2560 return;
2561 entry = entry->next;
2562 }
2563
2564 entry = bfd_malloc (sizeof (* entry));
2565 if (entry == NULL)
2566 return;
2567
2568 entry->value = value;
2569 entry->next = head;
2570 head = entry;
2571 }
2572
2573 static unsigned
2574 apuinfo_list_length (void)
2575 {
2576 apuinfo_list *entry;
2577 unsigned long count;
2578
2579 for (entry = head, count = 0;
2580 entry;
2581 entry = entry->next)
2582 ++ count;
2583
2584 return count;
2585 }
2586
2587 static inline unsigned long
2588 apuinfo_list_element (unsigned long number)
2589 {
2590 apuinfo_list * entry;
2591
2592 for (entry = head;
2593 entry && number --;
2594 entry = entry->next)
2595 ;
2596
2597 return entry ? entry->value : 0;
2598 }
2599
2600 static void
2601 apuinfo_list_finish (void)
2602 {
2603 apuinfo_list *entry;
2604
2605 for (entry = head; entry;)
2606 {
2607 apuinfo_list *next = entry->next;
2608 free (entry);
2609 entry = next;
2610 }
2611
2612 head = NULL;
2613 }
2614
2615 #define APUINFO_SECTION_NAME ".PPC.EMB.apuinfo"
2616 #define APUINFO_LABEL "APUinfo"
2617
2618 /* Scan the input BFDs and create a linked list of
2619 the APUinfo values that will need to be emitted. */
2620
2621 static void
2622 ppc_elf_begin_write_processing (bfd *abfd, struct bfd_link_info *link_info)
2623 {
2624 bfd *ibfd;
2625 asection *asec;
2626 char *buffer = NULL;
2627 bfd_size_type largest_input_size = 0;
2628 unsigned i;
2629 unsigned long length;
2630 const char *error_message = NULL;
2631
2632 if (link_info == NULL)
2633 return;
2634
2635 apuinfo_list_init ();
2636
2637 /* Read in the input sections contents. */
2638 for (ibfd = link_info->input_bfds; ibfd; ibfd = ibfd->link.next)
2639 {
2640 unsigned long datum;
2641
2642 asec = bfd_get_section_by_name (ibfd, APUINFO_SECTION_NAME);
2643 if (asec == NULL)
2644 continue;
2645
2646 error_message = _("corrupt %s section in %B");
2647 length = asec->size;
2648 if (length < 20)
2649 goto fail;
2650
2651 apuinfo_set = TRUE;
2652 if (largest_input_size < asec->size)
2653 {
2654 if (buffer)
2655 free (buffer);
2656 largest_input_size = asec->size;
2657 buffer = bfd_malloc (largest_input_size);
2658 if (!buffer)
2659 return;
2660 }
2661
2662 if (bfd_seek (ibfd, asec->filepos, SEEK_SET) != 0
2663 || (bfd_bread (buffer, length, ibfd) != length))
2664 {
2665 error_message = _("unable to read in %s section from %B");
2666 goto fail;
2667 }
2668
2669 /* Verify the contents of the header. Note - we have to
2670 extract the values this way in order to allow for a
2671 host whose endian-ness is different from the target. */
2672 datum = bfd_get_32 (ibfd, buffer);
2673 if (datum != sizeof APUINFO_LABEL)
2674 goto fail;
2675
2676 datum = bfd_get_32 (ibfd, buffer + 8);
2677 if (datum != 0x2)
2678 goto fail;
2679
2680 if (strcmp (buffer + 12, APUINFO_LABEL) != 0)
2681 goto fail;
2682
2683 /* Get the number of bytes used for apuinfo entries. */
2684 datum = bfd_get_32 (ibfd, buffer + 4);
2685 if (datum + 20 != length)
2686 goto fail;
2687
2688 /* Scan the apuinfo section, building a list of apuinfo numbers. */
2689 for (i = 0; i < datum; i += 4)
2690 apuinfo_list_add (bfd_get_32 (ibfd, buffer + 20 + i));
2691 }
2692
2693 error_message = NULL;
2694
2695 if (apuinfo_set)
2696 {
2697 /* Compute the size of the output section. */
2698 unsigned num_entries = apuinfo_list_length ();
2699
2700 /* Set the output section size, if it exists. */
2701 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2702
2703 if (asec && ! bfd_set_section_size (abfd, asec, 20 + num_entries * 4))
2704 {
2705 ibfd = abfd;
2706 error_message = _("warning: unable to set size of %s section in %B");
2707 }
2708 }
2709
2710 fail:
2711 if (buffer)
2712 free (buffer);
2713
2714 if (error_message)
2715 (*_bfd_error_handler) (error_message, ibfd, APUINFO_SECTION_NAME);
2716 }
2717
2718 /* Prevent the output section from accumulating the input sections'
2719 contents. We have already stored this in our linked list structure. */
2720
2721 static bfd_boolean
2722 ppc_elf_write_section (bfd *abfd ATTRIBUTE_UNUSED,
2723 struct bfd_link_info *link_info ATTRIBUTE_UNUSED,
2724 asection *asec,
2725 bfd_byte *contents ATTRIBUTE_UNUSED)
2726 {
2727 return apuinfo_set && strcmp (asec->name, APUINFO_SECTION_NAME) == 0;
2728 }
2729
2730 /* Finally we can generate the output section. */
2731
2732 static void
2733 ppc_elf_final_write_processing (bfd *abfd, bfd_boolean linker ATTRIBUTE_UNUSED)
2734 {
2735 bfd_byte *buffer;
2736 asection *asec;
2737 unsigned i;
2738 unsigned num_entries;
2739 bfd_size_type length;
2740
2741 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2742 if (asec == NULL)
2743 return;
2744
2745 if (!apuinfo_set)
2746 return;
2747
2748 length = asec->size;
2749 if (length < 20)
2750 return;
2751
2752 buffer = bfd_malloc (length);
2753 if (buffer == NULL)
2754 {
2755 (*_bfd_error_handler)
2756 (_("failed to allocate space for new APUinfo section."));
2757 return;
2758 }
2759
2760 /* Create the apuinfo header. */
2761 num_entries = apuinfo_list_length ();
2762 bfd_put_32 (abfd, sizeof APUINFO_LABEL, buffer);
2763 bfd_put_32 (abfd, num_entries * 4, buffer + 4);
2764 bfd_put_32 (abfd, 0x2, buffer + 8);
2765 strcpy ((char *) buffer + 12, APUINFO_LABEL);
2766
2767 length = 20;
2768 for (i = 0; i < num_entries; i++)
2769 {
2770 bfd_put_32 (abfd, apuinfo_list_element (i), buffer + length);
2771 length += 4;
2772 }
2773
2774 if (length != asec->size)
2775 (*_bfd_error_handler) (_("failed to compute new APUinfo section."));
2776
2777 if (! bfd_set_section_contents (abfd, asec, buffer, (file_ptr) 0, length))
2778 (*_bfd_error_handler) (_("failed to install new APUinfo section."));
2779
2780 free (buffer);
2781
2782 apuinfo_list_finish ();
2783 }
2784 \f
2785 static bfd_boolean
2786 is_nonpic_glink_stub (bfd *abfd, asection *glink, bfd_vma off)
2787 {
2788 bfd_byte buf[GLINK_ENTRY_SIZE];
2789
2790 if (!bfd_get_section_contents (abfd, glink, buf, off, GLINK_ENTRY_SIZE))
2791 return FALSE;
2792
2793 return ((bfd_get_32 (abfd, buf + 0) & 0xffff0000) == LIS_11
2794 && (bfd_get_32 (abfd, buf + 4) & 0xffff0000) == LWZ_11_11
2795 && bfd_get_32 (abfd, buf + 8) == MTCTR_11
2796 && bfd_get_32 (abfd, buf + 12) == BCTR);
2797 }
2798
2799 static bfd_boolean
2800 section_covers_vma (bfd *abfd ATTRIBUTE_UNUSED, asection *section, void *ptr)
2801 {
2802 bfd_vma vma = *(bfd_vma *) ptr;
2803 return ((section->flags & SEC_ALLOC) != 0
2804 && section->vma <= vma
2805 && vma < section->vma + section->size);
2806 }
2807
2808 static long
2809 ppc_elf_get_synthetic_symtab (bfd *abfd, long symcount, asymbol **syms,
2810 long dynsymcount, asymbol **dynsyms,
2811 asymbol **ret)
2812 {
2813 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
2814 asection *plt, *relplt, *dynamic, *glink;
2815 bfd_vma glink_vma = 0;
2816 bfd_vma resolv_vma = 0;
2817 bfd_vma stub_vma;
2818 asymbol *s;
2819 arelent *p;
2820 long count, i;
2821 size_t size;
2822 char *names;
2823 bfd_byte buf[4];
2824
2825 *ret = NULL;
2826
2827 if ((abfd->flags & (DYNAMIC | EXEC_P)) == 0)
2828 return 0;
2829
2830 if (dynsymcount <= 0)
2831 return 0;
2832
2833 relplt = bfd_get_section_by_name (abfd, ".rela.plt");
2834 if (relplt == NULL)
2835 return 0;
2836
2837 plt = bfd_get_section_by_name (abfd, ".plt");
2838 if (plt == NULL)
2839 return 0;
2840
2841 /* Call common code to handle old-style executable PLTs. */
2842 if (elf_section_flags (plt) & SHF_EXECINSTR)
2843 return _bfd_elf_get_synthetic_symtab (abfd, symcount, syms,
2844 dynsymcount, dynsyms, ret);
2845
2846 /* If this object was prelinked, the prelinker stored the address
2847 of .glink at got[1]. If it wasn't prelinked, got[1] will be zero. */
2848 dynamic = bfd_get_section_by_name (abfd, ".dynamic");
2849 if (dynamic != NULL)
2850 {
2851 bfd_byte *dynbuf, *extdyn, *extdynend;
2852 size_t extdynsize;
2853 void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *);
2854
2855 if (!bfd_malloc_and_get_section (abfd, dynamic, &dynbuf))
2856 return -1;
2857
2858 extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn;
2859 swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in;
2860
2861 extdyn = dynbuf;
2862 extdynend = extdyn + dynamic->size;
2863 for (; extdyn < extdynend; extdyn += extdynsize)
2864 {
2865 Elf_Internal_Dyn dyn;
2866 (*swap_dyn_in) (abfd, extdyn, &dyn);
2867
2868 if (dyn.d_tag == DT_NULL)
2869 break;
2870
2871 if (dyn.d_tag == DT_PPC_GOT)
2872 {
2873 unsigned int g_o_t = dyn.d_un.d_val;
2874 asection *got = bfd_get_section_by_name (abfd, ".got");
2875 if (got != NULL
2876 && bfd_get_section_contents (abfd, got, buf,
2877 g_o_t - got->vma + 4, 4))
2878 glink_vma = bfd_get_32 (abfd, buf);
2879 break;
2880 }
2881 }
2882 free (dynbuf);
2883 }
2884
2885 /* Otherwise we read the first plt entry. */
2886 if (glink_vma == 0)
2887 {
2888 if (bfd_get_section_contents (abfd, plt, buf, 0, 4))
2889 glink_vma = bfd_get_32 (abfd, buf);
2890 }
2891
2892 if (glink_vma == 0)
2893 return 0;
2894
2895 /* The .glink section usually does not survive the final
2896 link; search for the section (usually .text) where the
2897 glink stubs now reside. */
2898 glink = bfd_sections_find_if (abfd, section_covers_vma, &glink_vma);
2899 if (glink == NULL)
2900 return 0;
2901
2902 /* Determine glink PLT resolver by reading the relative branch
2903 from the first glink stub. */
2904 if (bfd_get_section_contents (abfd, glink, buf,
2905 glink_vma - glink->vma, 4))
2906 {
2907 unsigned int insn = bfd_get_32 (abfd, buf);
2908
2909 /* The first glink stub may either branch to the resolver ... */
2910 insn ^= B;
2911 if ((insn & ~0x3fffffc) == 0)
2912 resolv_vma = glink_vma + (insn ^ 0x2000000) - 0x2000000;
2913
2914 /* ... or fall through a bunch of NOPs. */
2915 else if ((insn ^ B ^ NOP) == 0)
2916 for (i = 4;
2917 bfd_get_section_contents (abfd, glink, buf,
2918 glink_vma - glink->vma + i, 4);
2919 i += 4)
2920 if (bfd_get_32 (abfd, buf) != NOP)
2921 {
2922 resolv_vma = glink_vma + i;
2923 break;
2924 }
2925 }
2926
2927 count = relplt->size / sizeof (Elf32_External_Rela);
2928 stub_vma = glink_vma - (bfd_vma) count * 16;
2929 /* If the stubs are those for -shared/-pie then we might have
2930 multiple stubs for each plt entry. If that is the case then
2931 there is no way to associate stubs with their plt entries short
2932 of figuring out the GOT pointer value used in the stub. */
2933 if (!is_nonpic_glink_stub (abfd, glink,
2934 glink_vma - GLINK_ENTRY_SIZE - glink->vma))
2935 return 0;
2936
2937 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
2938 if (! (*slurp_relocs) (abfd, relplt, dynsyms, TRUE))
2939 return -1;
2940
2941 size = count * sizeof (asymbol);
2942 p = relplt->relocation;
2943 for (i = 0; i < count; i++, p++)
2944 {
2945 size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt");
2946 if (p->addend != 0)
2947 size += sizeof ("+0x") - 1 + 8;
2948 }
2949
2950 size += sizeof (asymbol) + sizeof ("__glink");
2951
2952 if (resolv_vma)
2953 size += sizeof (asymbol) + sizeof ("__glink_PLTresolve");
2954
2955 s = *ret = bfd_malloc (size);
2956 if (s == NULL)
2957 return -1;
2958
2959 names = (char *) (s + count + 1 + (resolv_vma != 0));
2960 p = relplt->relocation;
2961 for (i = 0; i < count; i++, p++)
2962 {
2963 size_t len;
2964
2965 *s = **p->sym_ptr_ptr;
2966 /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since
2967 we are defining a symbol, ensure one of them is set. */
2968 if ((s->flags & BSF_LOCAL) == 0)
2969 s->flags |= BSF_GLOBAL;
2970 s->flags |= BSF_SYNTHETIC;
2971 s->section = glink;
2972 s->value = stub_vma - glink->vma;
2973 s->name = names;
2974 s->udata.p = NULL;
2975 len = strlen ((*p->sym_ptr_ptr)->name);
2976 memcpy (names, (*p->sym_ptr_ptr)->name, len);
2977 names += len;
2978 if (p->addend != 0)
2979 {
2980 memcpy (names, "+0x", sizeof ("+0x") - 1);
2981 names += sizeof ("+0x") - 1;
2982 bfd_sprintf_vma (abfd, names, p->addend);
2983 names += strlen (names);
2984 }
2985 memcpy (names, "@plt", sizeof ("@plt"));
2986 names += sizeof ("@plt");
2987 ++s;
2988 stub_vma += 16;
2989 }
2990
2991 /* Add a symbol at the start of the glink branch table. */
2992 memset (s, 0, sizeof *s);
2993 s->the_bfd = abfd;
2994 s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
2995 s->section = glink;
2996 s->value = glink_vma - glink->vma;
2997 s->name = names;
2998 memcpy (names, "__glink", sizeof ("__glink"));
2999 names += sizeof ("__glink");
3000 s++;
3001 count++;
3002
3003 if (resolv_vma)
3004 {
3005 /* Add a symbol for the glink PLT resolver. */
3006 memset (s, 0, sizeof *s);
3007 s->the_bfd = abfd;
3008 s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
3009 s->section = glink;
3010 s->value = resolv_vma - glink->vma;
3011 s->name = names;
3012 memcpy (names, "__glink_PLTresolve", sizeof ("__glink_PLTresolve"));
3013 names += sizeof ("__glink_PLTresolve");
3014 s++;
3015 count++;
3016 }
3017
3018 return count;
3019 }
3020 \f
3021 /* The following functions are specific to the ELF linker, while
3022 functions above are used generally. They appear in this file more
3023 or less in the order in which they are called. eg.
3024 ppc_elf_check_relocs is called early in the link process,
3025 ppc_elf_finish_dynamic_sections is one of the last functions
3026 called. */
3027
3028 /* Track PLT entries needed for a given symbol. We might need more
3029 than one glink entry per symbol when generating a pic binary. */
3030 struct plt_entry
3031 {
3032 struct plt_entry *next;
3033
3034 /* -fPIC uses multiple GOT sections, one per file, called ".got2".
3035 This field stores the offset into .got2 used to initialise the
3036 GOT pointer reg. It will always be at least 32768. (Current
3037 gcc always uses an offset of 32768, but ld -r will pack .got2
3038 sections together resulting in larger offsets). */
3039 bfd_vma addend;
3040
3041 /* The .got2 section. */
3042 asection *sec;
3043
3044 /* PLT refcount or offset. */
3045 union
3046 {
3047 bfd_signed_vma refcount;
3048 bfd_vma offset;
3049 } plt;
3050
3051 /* .glink stub offset. */
3052 bfd_vma glink_offset;
3053 };
3054
3055 /* Of those relocs that might be copied as dynamic relocs, this function
3056 selects those that must be copied when linking a shared library,
3057 even when the symbol is local. */
3058
3059 static int
3060 must_be_dyn_reloc (struct bfd_link_info *info,
3061 enum elf_ppc_reloc_type r_type)
3062 {
3063 switch (r_type)
3064 {
3065 default:
3066 return 1;
3067
3068 case R_PPC_REL24:
3069 case R_PPC_REL14:
3070 case R_PPC_REL14_BRTAKEN:
3071 case R_PPC_REL14_BRNTAKEN:
3072 case R_PPC_REL32:
3073 return 0;
3074
3075 case R_PPC_TPREL32:
3076 case R_PPC_TPREL16:
3077 case R_PPC_TPREL16_LO:
3078 case R_PPC_TPREL16_HI:
3079 case R_PPC_TPREL16_HA:
3080 return !info->executable;
3081 }
3082 }
3083
3084 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
3085 copying dynamic variables from a shared lib into an app's dynbss
3086 section, and instead use a dynamic relocation to point into the
3087 shared lib. */
3088 #define ELIMINATE_COPY_RELOCS 1
3089
3090 /* Used to track dynamic relocations for local symbols. */
3091 struct ppc_dyn_relocs
3092 {
3093 struct ppc_dyn_relocs *next;
3094
3095 /* The input section of the reloc. */
3096 asection *sec;
3097
3098 /* Total number of relocs copied for the input section. */
3099 unsigned int count : 31;
3100
3101 /* Whether this entry is for STT_GNU_IFUNC symbols. */
3102 unsigned int ifunc : 1;
3103 };
3104
3105 /* PPC ELF linker hash entry. */
3106
3107 struct ppc_elf_link_hash_entry
3108 {
3109 struct elf_link_hash_entry elf;
3110
3111 /* If this symbol is used in the linker created sections, the processor
3112 specific backend uses this field to map the field into the offset
3113 from the beginning of the section. */
3114 elf_linker_section_pointers_t *linker_section_pointer;
3115
3116 /* Track dynamic relocs copied for this symbol. */
3117 struct elf_dyn_relocs *dyn_relocs;
3118
3119 /* Contexts in which symbol is used in the GOT (or TOC).
3120 TLS_GD .. TLS_TLS bits are or'd into the mask as the
3121 corresponding relocs are encountered during check_relocs.
3122 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
3123 indicate the corresponding GOT entry type is not needed. */
3124 #define TLS_GD 1 /* GD reloc. */
3125 #define TLS_LD 2 /* LD reloc. */
3126 #define TLS_TPREL 4 /* TPREL reloc, => IE. */
3127 #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
3128 #define TLS_TLS 16 /* Any TLS reloc. */
3129 #define TLS_TPRELGD 32 /* TPREL reloc resulting from GD->IE. */
3130 #define PLT_IFUNC 64 /* STT_GNU_IFUNC. */
3131 char tls_mask;
3132
3133 /* Nonzero if we have seen a small data relocation referring to this
3134 symbol. */
3135 unsigned char has_sda_refs;
3136 };
3137
3138 #define ppc_elf_hash_entry(ent) ((struct ppc_elf_link_hash_entry *) (ent))
3139
3140 /* PPC ELF linker hash table. */
3141
3142 struct ppc_elf_link_hash_table
3143 {
3144 struct elf_link_hash_table elf;
3145
3146 /* Various options passed from the linker. */
3147 struct ppc_elf_params *params;
3148
3149 /* Short-cuts to get to dynamic linker sections. */
3150 asection *got;
3151 asection *relgot;
3152 asection *glink;
3153 asection *plt;
3154 asection *relplt;
3155 asection *iplt;
3156 asection *reliplt;
3157 asection *dynbss;
3158 asection *relbss;
3159 asection *dynsbss;
3160 asection *relsbss;
3161 elf_linker_section_t sdata[2];
3162 asection *sbss;
3163 asection *glink_eh_frame;
3164
3165 /* The (unloaded but important) .rela.plt.unloaded on VxWorks. */
3166 asection *srelplt2;
3167
3168 /* The .got.plt section (VxWorks only)*/
3169 asection *sgotplt;
3170
3171 /* Shortcut to __tls_get_addr. */
3172 struct elf_link_hash_entry *tls_get_addr;
3173
3174 /* The bfd that forced an old-style PLT. */
3175 bfd *old_bfd;
3176
3177 /* TLS local dynamic got entry handling. */
3178 union {
3179 bfd_signed_vma refcount;
3180 bfd_vma offset;
3181 } tlsld_got;
3182
3183 /* Offset of branch table to PltResolve function in glink. */
3184 bfd_vma glink_pltresolve;
3185
3186 /* Size of reserved GOT entries. */
3187 unsigned int got_header_size;
3188 /* Non-zero if allocating the header left a gap. */
3189 unsigned int got_gap;
3190
3191 /* The type of PLT we have chosen to use. */
3192 enum ppc_elf_plt_type plt_type;
3193
3194 /* True if the target system is VxWorks. */
3195 unsigned int is_vxworks:1;
3196
3197 /* The size of PLT entries. */
3198 int plt_entry_size;
3199 /* The distance between adjacent PLT slots. */
3200 int plt_slot_size;
3201 /* The size of the first PLT entry. */
3202 int plt_initial_entry_size;
3203
3204 /* Small local sym cache. */
3205 struct sym_cache sym_cache;
3206 };
3207
3208 /* Rename some of the generic section flags to better document how they
3209 are used for ppc32. The flags are only valid for ppc32 elf objects. */
3210
3211 /* Nonzero if this section has TLS related relocations. */
3212 #define has_tls_reloc sec_flg0
3213
3214 /* Nonzero if this section has a call to __tls_get_addr. */
3215 #define has_tls_get_addr_call sec_flg1
3216
3217 /* Get the PPC ELF linker hash table from a link_info structure. */
3218
3219 #define ppc_elf_hash_table(p) \
3220 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
3221 == PPC32_ELF_DATA ? ((struct ppc_elf_link_hash_table *) ((p)->hash)) : NULL)
3222
3223 /* Create an entry in a PPC ELF linker hash table. */
3224
3225 static struct bfd_hash_entry *
3226 ppc_elf_link_hash_newfunc (struct bfd_hash_entry *entry,
3227 struct bfd_hash_table *table,
3228 const char *string)
3229 {
3230 /* Allocate the structure if it has not already been allocated by a
3231 subclass. */
3232 if (entry == NULL)
3233 {
3234 entry = bfd_hash_allocate (table,
3235 sizeof (struct ppc_elf_link_hash_entry));
3236 if (entry == NULL)
3237 return entry;
3238 }
3239
3240 /* Call the allocation method of the superclass. */
3241 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
3242 if (entry != NULL)
3243 {
3244 ppc_elf_hash_entry (entry)->linker_section_pointer = NULL;
3245 ppc_elf_hash_entry (entry)->dyn_relocs = NULL;
3246 ppc_elf_hash_entry (entry)->tls_mask = 0;
3247 ppc_elf_hash_entry (entry)->has_sda_refs = 0;
3248 }
3249
3250 return entry;
3251 }
3252
3253 /* Create a PPC ELF linker hash table. */
3254
3255 static struct bfd_link_hash_table *
3256 ppc_elf_link_hash_table_create (bfd *abfd)
3257 {
3258 struct ppc_elf_link_hash_table *ret;
3259 static struct ppc_elf_params default_params = { PLT_OLD, 0, 1, 0, 0, 12 };
3260
3261 ret = bfd_zmalloc (sizeof (struct ppc_elf_link_hash_table));
3262 if (ret == NULL)
3263 return NULL;
3264
3265 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd,
3266 ppc_elf_link_hash_newfunc,
3267 sizeof (struct ppc_elf_link_hash_entry),
3268 PPC32_ELF_DATA))
3269 {
3270 free (ret);
3271 return NULL;
3272 }
3273
3274 ret->elf.init_plt_refcount.refcount = 0;
3275 ret->elf.init_plt_refcount.glist = NULL;
3276 ret->elf.init_plt_offset.offset = 0;
3277 ret->elf.init_plt_offset.glist = NULL;
3278
3279 ret->params = &default_params;
3280
3281 ret->sdata[0].name = ".sdata";
3282 ret->sdata[0].sym_name = "_SDA_BASE_";
3283 ret->sdata[0].bss_name = ".sbss";
3284
3285 ret->sdata[1].name = ".sdata2";
3286 ret->sdata[1].sym_name = "_SDA2_BASE_";
3287 ret->sdata[1].bss_name = ".sbss2";
3288
3289 ret->plt_entry_size = 12;
3290 ret->plt_slot_size = 8;
3291 ret->plt_initial_entry_size = 72;
3292
3293 return &ret->elf.root;
3294 }
3295
3296 /* Hook linker params into hash table. */
3297
3298 void
3299 ppc_elf_link_params (struct bfd_link_info *info, struct ppc_elf_params *params)
3300 {
3301 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
3302
3303 if (htab)
3304 htab->params = params;
3305 }
3306
3307 /* Create .got and the related sections. */
3308
3309 static bfd_boolean
3310 ppc_elf_create_got (bfd *abfd, struct bfd_link_info *info)
3311 {
3312 struct ppc_elf_link_hash_table *htab;
3313 asection *s;
3314 flagword flags;
3315
3316 if (!_bfd_elf_create_got_section (abfd, info))
3317 return FALSE;
3318
3319 htab = ppc_elf_hash_table (info);
3320 htab->got = s = bfd_get_linker_section (abfd, ".got");
3321 if (s == NULL)
3322 abort ();
3323
3324 if (htab->is_vxworks)
3325 {
3326 htab->sgotplt = bfd_get_linker_section (abfd, ".got.plt");
3327 if (!htab->sgotplt)
3328 abort ();
3329 }
3330 else
3331 {
3332 /* The powerpc .got has a blrl instruction in it. Mark it
3333 executable. */
3334 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS
3335 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3336 if (!bfd_set_section_flags (abfd, s, flags))
3337 return FALSE;
3338 }
3339
3340 htab->relgot = bfd_get_linker_section (abfd, ".rela.got");
3341 if (!htab->relgot)
3342 abort ();
3343
3344 return TRUE;
3345 }
3346
3347 /* Create a special linker section, used for R_PPC_EMB_SDAI16 and
3348 R_PPC_EMB_SDA2I16 pointers. These sections become part of .sdata
3349 and .sdata2. Create _SDA_BASE_ and _SDA2_BASE too. */
3350
3351 static bfd_boolean
3352 ppc_elf_create_linker_section (bfd *abfd,
3353 struct bfd_link_info *info,
3354 flagword flags,
3355 elf_linker_section_t *lsect)
3356 {
3357 asection *s;
3358
3359 flags |= (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
3360 | SEC_LINKER_CREATED);
3361
3362 s = bfd_make_section_anyway_with_flags (abfd, lsect->name, flags);
3363 if (s == NULL)
3364 return FALSE;
3365 lsect->section = s;
3366
3367 /* Define the sym on the first section of this name. */
3368 s = bfd_get_section_by_name (abfd, lsect->name);
3369
3370 lsect->sym = _bfd_elf_define_linkage_sym (abfd, info, s, lsect->sym_name);
3371 if (lsect->sym == NULL)
3372 return FALSE;
3373 lsect->sym->root.u.def.value = 0x8000;
3374 return TRUE;
3375 }
3376
3377 static bfd_boolean
3378 ppc_elf_create_glink (bfd *abfd, struct bfd_link_info *info)
3379 {
3380 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
3381 asection *s;
3382 flagword flags;
3383
3384 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY | SEC_HAS_CONTENTS
3385 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3386 s = bfd_make_section_anyway_with_flags (abfd, ".glink", flags);
3387 htab->glink = s;
3388 if (s == NULL
3389 || !bfd_set_section_alignment (abfd, s,
3390 htab->params->ppc476_workaround ? 6 : 4))
3391 return FALSE;
3392
3393 if (!info->no_ld_generated_unwind_info)
3394 {
3395 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
3396 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3397 s = bfd_make_section_anyway_with_flags (abfd, ".eh_frame", flags);
3398 htab->glink_eh_frame = s;
3399 if (s == NULL
3400 || !bfd_set_section_alignment (abfd, s, 2))
3401 return FALSE;
3402 }
3403
3404 flags = SEC_ALLOC | SEC_LINKER_CREATED;
3405 s = bfd_make_section_anyway_with_flags (abfd, ".iplt", flags);
3406 htab->iplt = s;
3407 if (s == NULL
3408 || !bfd_set_section_alignment (abfd, s, 4))
3409 return FALSE;
3410
3411 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
3412 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3413 s = bfd_make_section_anyway_with_flags (abfd, ".rela.iplt", flags);
3414 htab->reliplt = s;
3415 if (s == NULL
3416 || ! bfd_set_section_alignment (abfd, s, 2))
3417 return FALSE;
3418
3419 if (!ppc_elf_create_linker_section (abfd, info, 0,
3420 &htab->sdata[0]))
3421 return FALSE;
3422
3423 if (!ppc_elf_create_linker_section (abfd, info, SEC_READONLY,
3424 &htab->sdata[1]))
3425 return FALSE;
3426
3427 return TRUE;
3428 }
3429
3430 /* We have to create .dynsbss and .rela.sbss here so that they get mapped
3431 to output sections (just like _bfd_elf_create_dynamic_sections has
3432 to create .dynbss and .rela.bss). */
3433
3434 static bfd_boolean
3435 ppc_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
3436 {
3437 struct ppc_elf_link_hash_table *htab;
3438 asection *s;
3439 flagword flags;
3440
3441 htab = ppc_elf_hash_table (info);
3442
3443 if (htab->got == NULL
3444 && !ppc_elf_create_got (abfd, info))
3445 return FALSE;
3446
3447 if (!_bfd_elf_create_dynamic_sections (abfd, info))
3448 return FALSE;
3449
3450 if (htab->glink == NULL
3451 && !ppc_elf_create_glink (abfd, info))
3452 return FALSE;
3453
3454 htab->dynbss = bfd_get_linker_section (abfd, ".dynbss");
3455 s = bfd_make_section_anyway_with_flags (abfd, ".dynsbss",
3456 SEC_ALLOC | SEC_LINKER_CREATED);
3457 htab->dynsbss = s;
3458 if (s == NULL)
3459 return FALSE;
3460
3461 if (! info->shared)
3462 {
3463 htab->relbss = bfd_get_linker_section (abfd, ".rela.bss");
3464 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
3465 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3466 s = bfd_make_section_anyway_with_flags (abfd, ".rela.sbss", flags);
3467 htab->relsbss = s;
3468 if (s == NULL
3469 || ! bfd_set_section_alignment (abfd, s, 2))
3470 return FALSE;
3471 }
3472
3473 if (htab->is_vxworks
3474 && !elf_vxworks_create_dynamic_sections (abfd, info, &htab->srelplt2))
3475 return FALSE;
3476
3477 htab->relplt = bfd_get_linker_section (abfd, ".rela.plt");
3478 htab->plt = s = bfd_get_linker_section (abfd, ".plt");
3479 if (s == NULL)
3480 abort ();
3481
3482 flags = SEC_ALLOC | SEC_CODE | SEC_LINKER_CREATED;
3483 if (htab->plt_type == PLT_VXWORKS)
3484 /* The VxWorks PLT is a loaded section with contents. */
3485 flags |= SEC_HAS_CONTENTS | SEC_LOAD | SEC_READONLY;
3486 return bfd_set_section_flags (abfd, s, flags);
3487 }
3488
3489 /* Copy the extra info we tack onto an elf_link_hash_entry. */
3490
3491 static void
3492 ppc_elf_copy_indirect_symbol (struct bfd_link_info *info,
3493 struct elf_link_hash_entry *dir,
3494 struct elf_link_hash_entry *ind)
3495 {
3496 struct ppc_elf_link_hash_entry *edir, *eind;
3497
3498 edir = (struct ppc_elf_link_hash_entry *) dir;
3499 eind = (struct ppc_elf_link_hash_entry *) ind;
3500
3501 edir->tls_mask |= eind->tls_mask;
3502 edir->has_sda_refs |= eind->has_sda_refs;
3503
3504 /* If called to transfer flags for a weakdef during processing
3505 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
3506 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
3507 if (!(ELIMINATE_COPY_RELOCS
3508 && eind->elf.root.type != bfd_link_hash_indirect
3509 && edir->elf.dynamic_adjusted))
3510 edir->elf.non_got_ref |= eind->elf.non_got_ref;
3511
3512 edir->elf.ref_dynamic |= eind->elf.ref_dynamic;
3513 edir->elf.ref_regular |= eind->elf.ref_regular;
3514 edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak;
3515 edir->elf.needs_plt |= eind->elf.needs_plt;
3516 edir->elf.pointer_equality_needed |= eind->elf.pointer_equality_needed;
3517
3518 if (eind->dyn_relocs != NULL)
3519 {
3520 if (edir->dyn_relocs != NULL)
3521 {
3522 struct elf_dyn_relocs **pp;
3523 struct elf_dyn_relocs *p;
3524
3525 /* Add reloc counts against the indirect sym to the direct sym
3526 list. Merge any entries against the same section. */
3527 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
3528 {
3529 struct elf_dyn_relocs *q;
3530
3531 for (q = edir->dyn_relocs; q != NULL; q = q->next)
3532 if (q->sec == p->sec)
3533 {
3534 q->pc_count += p->pc_count;
3535 q->count += p->count;
3536 *pp = p->next;
3537 break;
3538 }
3539 if (q == NULL)
3540 pp = &p->next;
3541 }
3542 *pp = edir->dyn_relocs;
3543 }
3544
3545 edir->dyn_relocs = eind->dyn_relocs;
3546 eind->dyn_relocs = NULL;
3547 }
3548
3549 /* If we were called to copy over info for a weak sym, that's all.
3550 You might think dyn_relocs need not be copied over; After all,
3551 both syms will be dynamic or both non-dynamic so we're just
3552 moving reloc accounting around. However, ELIMINATE_COPY_RELOCS
3553 code in ppc_elf_adjust_dynamic_symbol needs to check for
3554 dyn_relocs in read-only sections, and it does so on what is the
3555 DIR sym here. */
3556 if (eind->elf.root.type != bfd_link_hash_indirect)
3557 return;
3558
3559 /* Copy over the GOT refcount entries that we may have already seen to
3560 the symbol which just became indirect. */
3561 edir->elf.got.refcount += eind->elf.got.refcount;
3562 eind->elf.got.refcount = 0;
3563
3564 /* And plt entries. */
3565 if (eind->elf.plt.plist != NULL)
3566 {
3567 if (edir->elf.plt.plist != NULL)
3568 {
3569 struct plt_entry **entp;
3570 struct plt_entry *ent;
3571
3572 for (entp = &eind->elf.plt.plist; (ent = *entp) != NULL; )
3573 {
3574 struct plt_entry *dent;
3575
3576 for (dent = edir->elf.plt.plist; dent != NULL; dent = dent->next)
3577 if (dent->sec == ent->sec && dent->addend == ent->addend)
3578 {
3579 dent->plt.refcount += ent->plt.refcount;
3580 *entp = ent->next;
3581 break;
3582 }
3583 if (dent == NULL)
3584 entp = &ent->next;
3585 }
3586 *entp = edir->elf.plt.plist;
3587 }
3588
3589 edir->elf.plt.plist = eind->elf.plt.plist;
3590 eind->elf.plt.plist = NULL;
3591 }
3592
3593 if (eind->elf.dynindx != -1)
3594 {
3595 if (edir->elf.dynindx != -1)
3596 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
3597 edir->elf.dynstr_index);
3598 edir->elf.dynindx = eind->elf.dynindx;
3599 edir->elf.dynstr_index = eind->elf.dynstr_index;
3600 eind->elf.dynindx = -1;
3601 eind->elf.dynstr_index = 0;
3602 }
3603 }
3604
3605 /* Hook called by the linker routine which adds symbols from an object
3606 file. We use it to put .comm items in .sbss, and not .bss. */
3607
3608 static bfd_boolean
3609 ppc_elf_add_symbol_hook (bfd *abfd,
3610 struct bfd_link_info *info,
3611 Elf_Internal_Sym *sym,
3612 const char **namep ATTRIBUTE_UNUSED,
3613 flagword *flagsp ATTRIBUTE_UNUSED,
3614 asection **secp,
3615 bfd_vma *valp)
3616 {
3617 if (sym->st_shndx == SHN_COMMON
3618 && !info->relocatable
3619 && is_ppc_elf (info->output_bfd)
3620 && sym->st_size <= elf_gp_size (abfd))
3621 {
3622 /* Common symbols less than or equal to -G nn bytes are automatically
3623 put into .sbss. */
3624 struct ppc_elf_link_hash_table *htab;
3625
3626 htab = ppc_elf_hash_table (info);
3627 if (htab->sbss == NULL)
3628 {
3629 flagword flags = SEC_IS_COMMON | SEC_LINKER_CREATED;
3630
3631 if (!htab->elf.dynobj)
3632 htab->elf.dynobj = abfd;
3633
3634 htab->sbss = bfd_make_section_anyway_with_flags (htab->elf.dynobj,
3635 ".sbss",
3636 flags);
3637 if (htab->sbss == NULL)
3638 return FALSE;
3639 }
3640
3641 *secp = htab->sbss;
3642 *valp = sym->st_size;
3643 }
3644
3645 if ((ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC
3646 || ELF_ST_BIND (sym->st_info) == STB_GNU_UNIQUE)
3647 && (abfd->flags & DYNAMIC) == 0
3648 && bfd_get_flavour (info->output_bfd) == bfd_target_elf_flavour)
3649 elf_tdata (info->output_bfd)->has_gnu_symbols = TRUE;
3650
3651 return TRUE;
3652 }
3653 \f
3654 /* Find a linker generated pointer with a given addend and type. */
3655
3656 static elf_linker_section_pointers_t *
3657 elf_find_pointer_linker_section
3658 (elf_linker_section_pointers_t *linker_pointers,
3659 bfd_vma addend,
3660 elf_linker_section_t *lsect)
3661 {
3662 for ( ; linker_pointers != NULL; linker_pointers = linker_pointers->next)
3663 if (lsect == linker_pointers->lsect && addend == linker_pointers->addend)
3664 return linker_pointers;
3665
3666 return NULL;
3667 }
3668
3669 /* Allocate a pointer to live in a linker created section. */
3670
3671 static bfd_boolean
3672 elf_allocate_pointer_linker_section (bfd *abfd,
3673 elf_linker_section_t *lsect,
3674 struct elf_link_hash_entry *h,
3675 const Elf_Internal_Rela *rel)
3676 {
3677 elf_linker_section_pointers_t **ptr_linker_section_ptr = NULL;
3678 elf_linker_section_pointers_t *linker_section_ptr;
3679 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
3680 bfd_size_type amt;
3681
3682 BFD_ASSERT (lsect != NULL);
3683
3684 /* Is this a global symbol? */
3685 if (h != NULL)
3686 {
3687 struct ppc_elf_link_hash_entry *eh;
3688
3689 /* Has this symbol already been allocated? If so, our work is done. */
3690 eh = (struct ppc_elf_link_hash_entry *) h;
3691 if (elf_find_pointer_linker_section (eh->linker_section_pointer,
3692 rel->r_addend,
3693 lsect))
3694 return TRUE;
3695
3696 ptr_linker_section_ptr = &eh->linker_section_pointer;
3697 }
3698 else
3699 {
3700 BFD_ASSERT (is_ppc_elf (abfd));
3701
3702 /* Allocation of a pointer to a local symbol. */
3703 elf_linker_section_pointers_t **ptr = elf_local_ptr_offsets (abfd);
3704
3705 /* Allocate a table to hold the local symbols if first time. */
3706 if (!ptr)
3707 {
3708 unsigned int num_symbols = elf_symtab_hdr (abfd).sh_info;
3709
3710 amt = num_symbols;
3711 amt *= sizeof (elf_linker_section_pointers_t *);
3712 ptr = bfd_zalloc (abfd, amt);
3713
3714 if (!ptr)
3715 return FALSE;
3716
3717 elf_local_ptr_offsets (abfd) = ptr;
3718 }
3719
3720 /* Has this symbol already been allocated? If so, our work is done. */
3721 if (elf_find_pointer_linker_section (ptr[r_symndx],
3722 rel->r_addend,
3723 lsect))
3724 return TRUE;
3725
3726 ptr_linker_section_ptr = &ptr[r_symndx];
3727 }
3728
3729 /* Allocate space for a pointer in the linker section, and allocate
3730 a new pointer record from internal memory. */
3731 BFD_ASSERT (ptr_linker_section_ptr != NULL);
3732 amt = sizeof (elf_linker_section_pointers_t);
3733 linker_section_ptr = bfd_alloc (abfd, amt);
3734
3735 if (!linker_section_ptr)
3736 return FALSE;
3737
3738 linker_section_ptr->next = *ptr_linker_section_ptr;
3739 linker_section_ptr->addend = rel->r_addend;
3740 linker_section_ptr->lsect = lsect;
3741 *ptr_linker_section_ptr = linker_section_ptr;
3742
3743 if (!bfd_set_section_alignment (lsect->section->owner, lsect->section, 2))
3744 return FALSE;
3745 linker_section_ptr->offset = lsect->section->size;
3746 lsect->section->size += 4;
3747
3748 #ifdef DEBUG
3749 fprintf (stderr,
3750 "Create pointer in linker section %s, offset = %ld, section size = %ld\n",
3751 lsect->name, (long) linker_section_ptr->offset,
3752 (long) lsect->section->size);
3753 #endif
3754
3755 return TRUE;
3756 }
3757
3758 static struct plt_entry **
3759 update_local_sym_info (bfd *abfd,
3760 Elf_Internal_Shdr *symtab_hdr,
3761 unsigned long r_symndx,
3762 int tls_type)
3763 {
3764 bfd_signed_vma *local_got_refcounts = elf_local_got_refcounts (abfd);
3765 struct plt_entry **local_plt;
3766 char *local_got_tls_masks;
3767
3768 if (local_got_refcounts == NULL)
3769 {
3770 bfd_size_type size = symtab_hdr->sh_info;
3771
3772 size *= (sizeof (*local_got_refcounts)
3773 + sizeof (*local_plt)
3774 + sizeof (*local_got_tls_masks));
3775 local_got_refcounts = bfd_zalloc (abfd, size);
3776 if (local_got_refcounts == NULL)
3777 return NULL;
3778 elf_local_got_refcounts (abfd) = local_got_refcounts;
3779 }
3780
3781 local_plt = (struct plt_entry **) (local_got_refcounts + symtab_hdr->sh_info);
3782 local_got_tls_masks = (char *) (local_plt + symtab_hdr->sh_info);
3783 local_got_tls_masks[r_symndx] |= tls_type;
3784 if (tls_type != PLT_IFUNC)
3785 local_got_refcounts[r_symndx] += 1;
3786 return local_plt + r_symndx;
3787 }
3788
3789 static bfd_boolean
3790 update_plt_info (bfd *abfd, struct plt_entry **plist,
3791 asection *sec, bfd_vma addend)
3792 {
3793 struct plt_entry *ent;
3794
3795 if (addend < 32768)
3796 sec = NULL;
3797 for (ent = *plist; ent != NULL; ent = ent->next)
3798 if (ent->sec == sec && ent->addend == addend)
3799 break;
3800 if (ent == NULL)
3801 {
3802 bfd_size_type amt = sizeof (*ent);
3803 ent = bfd_alloc (abfd, amt);
3804 if (ent == NULL)
3805 return FALSE;
3806 ent->next = *plist;
3807 ent->sec = sec;
3808 ent->addend = addend;
3809 ent->plt.refcount = 0;
3810 *plist = ent;
3811 }
3812 ent->plt.refcount += 1;
3813 return TRUE;
3814 }
3815
3816 static struct plt_entry *
3817 find_plt_ent (struct plt_entry **plist, asection *sec, bfd_vma addend)
3818 {
3819 struct plt_entry *ent;
3820
3821 if (addend < 32768)
3822 sec = NULL;
3823 for (ent = *plist; ent != NULL; ent = ent->next)
3824 if (ent->sec == sec && ent->addend == addend)
3825 break;
3826 return ent;
3827 }
3828
3829 static bfd_boolean
3830 is_branch_reloc (enum elf_ppc_reloc_type r_type)
3831 {
3832 return (r_type == R_PPC_PLTREL24
3833 || r_type == R_PPC_LOCAL24PC
3834 || r_type == R_PPC_REL24
3835 || r_type == R_PPC_REL14
3836 || r_type == R_PPC_REL14_BRTAKEN
3837 || r_type == R_PPC_REL14_BRNTAKEN
3838 || r_type == R_PPC_ADDR24
3839 || r_type == R_PPC_ADDR14
3840 || r_type == R_PPC_ADDR14_BRTAKEN
3841 || r_type == R_PPC_ADDR14_BRNTAKEN);
3842 }
3843
3844 static void
3845 bad_shared_reloc (bfd *abfd, enum elf_ppc_reloc_type r_type)
3846 {
3847 (*_bfd_error_handler)
3848 (_("%B: relocation %s cannot be used when making a shared object"),
3849 abfd,
3850 ppc_elf_howto_table[r_type]->name);
3851 bfd_set_error (bfd_error_bad_value);
3852 }
3853
3854 /* Look through the relocs for a section during the first phase, and
3855 allocate space in the global offset table or procedure linkage
3856 table. */
3857
3858 static bfd_boolean
3859 ppc_elf_check_relocs (bfd *abfd,
3860 struct bfd_link_info *info,
3861 asection *sec,
3862 const Elf_Internal_Rela *relocs)
3863 {
3864 struct ppc_elf_link_hash_table *htab;
3865 Elf_Internal_Shdr *symtab_hdr;
3866 struct elf_link_hash_entry **sym_hashes;
3867 const Elf_Internal_Rela *rel;
3868 const Elf_Internal_Rela *rel_end;
3869 asection *got2, *sreloc;
3870 struct elf_link_hash_entry *tga;
3871
3872 if (info->relocatable)
3873 return TRUE;
3874
3875 /* Don't do anything special with non-loaded, non-alloced sections.
3876 In particular, any relocs in such sections should not affect GOT
3877 and PLT reference counting (ie. we don't allow them to create GOT
3878 or PLT entries), there's no possibility or desire to optimize TLS
3879 relocs, and there's not much point in propagating relocs to shared
3880 libs that the dynamic linker won't relocate. */
3881 if ((sec->flags & SEC_ALLOC) == 0)
3882 return TRUE;
3883
3884 #ifdef DEBUG
3885 _bfd_error_handler ("ppc_elf_check_relocs called for section %A in %B",
3886 sec, abfd);
3887 #endif
3888
3889 BFD_ASSERT (is_ppc_elf (abfd));
3890
3891 /* Initialize howto table if not already done. */
3892 if (!ppc_elf_howto_table[R_PPC_ADDR32])
3893 ppc_elf_howto_init ();
3894
3895 htab = ppc_elf_hash_table (info);
3896 if (htab->glink == NULL)
3897 {
3898 if (htab->elf.dynobj == NULL)
3899 htab->elf.dynobj = abfd;
3900 if (!ppc_elf_create_glink (htab->elf.dynobj, info))
3901 return FALSE;
3902 }
3903 tga = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
3904 FALSE, FALSE, TRUE);
3905 symtab_hdr = &elf_symtab_hdr (abfd);
3906 sym_hashes = elf_sym_hashes (abfd);
3907 got2 = bfd_get_section_by_name (abfd, ".got2");
3908 sreloc = NULL;
3909
3910 rel_end = relocs + sec->reloc_count;
3911 for (rel = relocs; rel < rel_end; rel++)
3912 {
3913 unsigned long r_symndx;
3914 enum elf_ppc_reloc_type r_type;
3915 struct elf_link_hash_entry *h;
3916 int tls_type;
3917
3918 r_symndx = ELF32_R_SYM (rel->r_info);
3919 if (r_symndx < symtab_hdr->sh_info)
3920 h = NULL;
3921 else
3922 {
3923 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3924 while (h->root.type == bfd_link_hash_indirect
3925 || h->root.type == bfd_link_hash_warning)
3926 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3927
3928 /* PR15323, ref flags aren't set for references in the same
3929 object. */
3930 h->root.non_ir_ref = 1;
3931 }
3932
3933 /* If a relocation refers to _GLOBAL_OFFSET_TABLE_, create the .got.
3934 This shows up in particular in an R_PPC_ADDR32 in the eabi
3935 startup code. */
3936 if (h != NULL
3937 && htab->got == NULL
3938 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
3939 {
3940 if (htab->elf.dynobj == NULL)
3941 htab->elf.dynobj = abfd;
3942 if (!ppc_elf_create_got (htab->elf.dynobj, info))
3943 return FALSE;
3944 BFD_ASSERT (h == htab->elf.hgot);
3945 }
3946
3947 tls_type = 0;
3948 r_type = ELF32_R_TYPE (rel->r_info);
3949 if (h == NULL && !htab->is_vxworks)
3950 {
3951 Elf_Internal_Sym *isym = bfd_sym_from_r_symndx (&htab->sym_cache,
3952 abfd, r_symndx);
3953 if (isym == NULL)
3954 return FALSE;
3955
3956 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
3957 {
3958 struct plt_entry **ifunc;
3959
3960 /* Set PLT_IFUNC flag for this sym, no GOT entry yet. */
3961 ifunc = update_local_sym_info (abfd, symtab_hdr, r_symndx,
3962 PLT_IFUNC);
3963 if (ifunc == NULL)
3964 return FALSE;
3965
3966 /* STT_GNU_IFUNC symbols must have a PLT entry;
3967 In a non-pie executable even when there are
3968 no plt calls. */
3969 if (!info->shared
3970 || is_branch_reloc (r_type))
3971 {
3972 bfd_vma addend = 0;
3973 if (r_type == R_PPC_PLTREL24)
3974 {
3975 ppc_elf_tdata (abfd)->makes_plt_call = 1;
3976 if (info->shared)
3977 addend = rel->r_addend;
3978 }
3979 if (!update_plt_info (abfd, ifunc, got2, addend))
3980 return FALSE;
3981 }
3982 }
3983 }
3984
3985 if (!htab->is_vxworks
3986 && is_branch_reloc (r_type)
3987 && h != NULL
3988 && h == tga)
3989 {
3990 if (rel != relocs
3991 && (ELF32_R_TYPE (rel[-1].r_info) == R_PPC_TLSGD
3992 || ELF32_R_TYPE (rel[-1].r_info) == R_PPC_TLSLD))
3993 /* We have a new-style __tls_get_addr call with a marker
3994 reloc. */
3995 ;
3996 else
3997 /* Mark this section as having an old-style call. */
3998 sec->has_tls_get_addr_call = 1;
3999 }
4000
4001 switch (r_type)
4002 {
4003 case R_PPC_TLSGD:
4004 case R_PPC_TLSLD:
4005 /* These special tls relocs tie a call to __tls_get_addr with
4006 its parameter symbol. */
4007 break;
4008
4009 case R_PPC_GOT_TLSLD16:
4010 case R_PPC_GOT_TLSLD16_LO:
4011 case R_PPC_GOT_TLSLD16_HI:
4012 case R_PPC_GOT_TLSLD16_HA:
4013 tls_type = TLS_TLS | TLS_LD;
4014 goto dogottls;
4015
4016 case R_PPC_GOT_TLSGD16:
4017 case R_PPC_GOT_TLSGD16_LO:
4018 case R_PPC_GOT_TLSGD16_HI:
4019 case R_PPC_GOT_TLSGD16_HA:
4020 tls_type = TLS_TLS | TLS_GD;
4021 goto dogottls;
4022
4023 case R_PPC_GOT_TPREL16:
4024 case R_PPC_GOT_TPREL16_LO:
4025 case R_PPC_GOT_TPREL16_HI:
4026 case R_PPC_GOT_TPREL16_HA:
4027 if (info->shared)
4028 info->flags |= DF_STATIC_TLS;
4029 tls_type = TLS_TLS | TLS_TPREL;
4030 goto dogottls;
4031
4032 case R_PPC_GOT_DTPREL16:
4033 case R_PPC_GOT_DTPREL16_LO:
4034 case R_PPC_GOT_DTPREL16_HI:
4035 case R_PPC_GOT_DTPREL16_HA:
4036 tls_type = TLS_TLS | TLS_DTPREL;
4037 dogottls:
4038 sec->has_tls_reloc = 1;
4039 /* Fall thru */
4040
4041 /* GOT16 relocations */
4042 case R_PPC_GOT16:
4043 case R_PPC_GOT16_LO:
4044 case R_PPC_GOT16_HI:
4045 case R_PPC_GOT16_HA:
4046 /* This symbol requires a global offset table entry. */
4047 if (htab->got == NULL)
4048 {
4049 if (htab->elf.dynobj == NULL)
4050 htab->elf.dynobj = abfd;
4051 if (!ppc_elf_create_got (htab->elf.dynobj, info))
4052 return FALSE;
4053 }
4054 if (h != NULL)
4055 {
4056 h->got.refcount += 1;
4057 ppc_elf_hash_entry (h)->tls_mask |= tls_type;
4058 }
4059 else
4060 /* This is a global offset table entry for a local symbol. */
4061 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, tls_type))
4062 return FALSE;
4063
4064 /* We may also need a plt entry if the symbol turns out to be
4065 an ifunc. */
4066 if (h != NULL && !info->shared)
4067 {
4068 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
4069 return FALSE;
4070 }
4071 break;
4072
4073 /* Indirect .sdata relocation. */
4074 case R_PPC_EMB_SDAI16:
4075 if (info->shared)
4076 {
4077 bad_shared_reloc (abfd, r_type);
4078 return FALSE;
4079 }
4080 htab->sdata[0].sym->ref_regular = 1;
4081 if (!elf_allocate_pointer_linker_section (abfd, &htab->sdata[0],
4082 h, rel))
4083 return FALSE;
4084 if (h != NULL)
4085 {
4086 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4087 h->non_got_ref = TRUE;
4088 }
4089 break;
4090
4091 /* Indirect .sdata2 relocation. */
4092 case R_PPC_EMB_SDA2I16:
4093 if (info->shared)
4094 {
4095 bad_shared_reloc (abfd, r_type);
4096 return FALSE;
4097 }
4098 htab->sdata[1].sym->ref_regular = 1;
4099 if (!elf_allocate_pointer_linker_section (abfd, &htab->sdata[1],
4100 h, rel))
4101 return FALSE;
4102 if (h != NULL)
4103 {
4104 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4105 h->non_got_ref = TRUE;
4106 }
4107 break;
4108
4109 case R_PPC_SDAREL16:
4110 htab->sdata[0].sym->ref_regular = 1;
4111 /* Fall thru */
4112
4113 case R_PPC_VLE_SDAREL_LO16A:
4114 case R_PPC_VLE_SDAREL_LO16D:
4115 case R_PPC_VLE_SDAREL_HI16A:
4116 case R_PPC_VLE_SDAREL_HI16D:
4117 case R_PPC_VLE_SDAREL_HA16A:
4118 case R_PPC_VLE_SDAREL_HA16D:
4119 if (h != NULL)
4120 {
4121 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4122 h->non_got_ref = TRUE;
4123 }
4124 break;
4125
4126 case R_PPC_VLE_REL8:
4127 case R_PPC_VLE_REL15:
4128 case R_PPC_VLE_REL24:
4129 case R_PPC_VLE_LO16A:
4130 case R_PPC_VLE_LO16D:
4131 case R_PPC_VLE_HI16A:
4132 case R_PPC_VLE_HI16D:
4133 case R_PPC_VLE_HA16A:
4134 case R_PPC_VLE_HA16D:
4135 break;
4136
4137 case R_PPC_EMB_SDA2REL:
4138 if (info->shared)
4139 {
4140 bad_shared_reloc (abfd, r_type);
4141 return FALSE;
4142 }
4143 htab->sdata[1].sym->ref_regular = 1;
4144 if (h != NULL)
4145 {
4146 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4147 h->non_got_ref = TRUE;
4148 }
4149 break;
4150
4151 case R_PPC_VLE_SDA21_LO:
4152 case R_PPC_VLE_SDA21:
4153 case R_PPC_EMB_SDA21:
4154 case R_PPC_EMB_RELSDA:
4155 if (info->shared)
4156 {
4157 bad_shared_reloc (abfd, r_type);
4158 return FALSE;
4159 }
4160 if (h != NULL)
4161 {
4162 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4163 h->non_got_ref = TRUE;
4164 }
4165 break;
4166
4167 case R_PPC_EMB_NADDR32:
4168 case R_PPC_EMB_NADDR16:
4169 case R_PPC_EMB_NADDR16_LO:
4170 case R_PPC_EMB_NADDR16_HI:
4171 case R_PPC_EMB_NADDR16_HA:
4172 if (info->shared)
4173 {
4174 bad_shared_reloc (abfd, r_type);
4175 return FALSE;
4176 }
4177 if (h != NULL)
4178 h->non_got_ref = TRUE;
4179 break;
4180
4181 case R_PPC_PLTREL24:
4182 if (h == NULL)
4183 break;
4184 /* Fall through */
4185 case R_PPC_PLT32:
4186 case R_PPC_PLTREL32:
4187 case R_PPC_PLT16_LO:
4188 case R_PPC_PLT16_HI:
4189 case R_PPC_PLT16_HA:
4190 #ifdef DEBUG
4191 fprintf (stderr, "Reloc requires a PLT entry\n");
4192 #endif
4193 /* This symbol requires a procedure linkage table entry. We
4194 actually build the entry in finish_dynamic_symbol,
4195 because this might be a case of linking PIC code without
4196 linking in any dynamic objects, in which case we don't
4197 need to generate a procedure linkage table after all. */
4198
4199 if (h == NULL)
4200 {
4201 /* It does not make sense to have a procedure linkage
4202 table entry for a local symbol. */
4203 info->callbacks->einfo (_("%P: %H: %s reloc against local symbol\n"),
4204 abfd, sec, rel->r_offset,
4205 ppc_elf_howto_table[r_type]->name);
4206 bfd_set_error (bfd_error_bad_value);
4207 return FALSE;
4208 }
4209 else
4210 {
4211 bfd_vma addend = 0;
4212
4213 if (r_type == R_PPC_PLTREL24)
4214 {
4215 ppc_elf_tdata (abfd)->makes_plt_call = 1;
4216 if (info->shared)
4217 addend = rel->r_addend;
4218 }
4219 h->needs_plt = 1;
4220 if (!update_plt_info (abfd, &h->plt.plist, got2, addend))
4221 return FALSE;
4222 }
4223 break;
4224
4225 /* The following relocations don't need to propagate the
4226 relocation if linking a shared object since they are
4227 section relative. */
4228 case R_PPC_SECTOFF:
4229 case R_PPC_SECTOFF_LO:
4230 case R_PPC_SECTOFF_HI:
4231 case R_PPC_SECTOFF_HA:
4232 case R_PPC_DTPREL16:
4233 case R_PPC_DTPREL16_LO:
4234 case R_PPC_DTPREL16_HI:
4235 case R_PPC_DTPREL16_HA:
4236 case R_PPC_TOC16:
4237 break;
4238
4239 case R_PPC_REL16:
4240 case R_PPC_REL16_LO:
4241 case R_PPC_REL16_HI:
4242 case R_PPC_REL16_HA:
4243 ppc_elf_tdata (abfd)->has_rel16 = 1;
4244 break;
4245
4246 /* These are just markers. */
4247 case R_PPC_TLS:
4248 case R_PPC_EMB_MRKREF:
4249 case R_PPC_NONE:
4250 case R_PPC_max:
4251 case R_PPC_RELAX:
4252 case R_PPC_RELAX_PLT:
4253 case R_PPC_RELAX_PLTREL24:
4254 break;
4255
4256 /* These should only appear in dynamic objects. */
4257 case R_PPC_COPY:
4258 case R_PPC_GLOB_DAT:
4259 case R_PPC_JMP_SLOT:
4260 case R_PPC_RELATIVE:
4261 case R_PPC_IRELATIVE:
4262 break;
4263
4264 /* These aren't handled yet. We'll report an error later. */
4265 case R_PPC_ADDR30:
4266 case R_PPC_EMB_RELSEC16:
4267 case R_PPC_EMB_RELST_LO:
4268 case R_PPC_EMB_RELST_HI:
4269 case R_PPC_EMB_RELST_HA:
4270 case R_PPC_EMB_BIT_FLD:
4271 break;
4272
4273 /* This refers only to functions defined in the shared library. */
4274 case R_PPC_LOCAL24PC:
4275 if (h != NULL && h == htab->elf.hgot && htab->plt_type == PLT_UNSET)
4276 {
4277 htab->plt_type = PLT_OLD;
4278 htab->old_bfd = abfd;
4279 }
4280 if (h != NULL && h->type == STT_GNU_IFUNC)
4281 {
4282 if (info->shared)
4283 {
4284 info->callbacks->einfo (_("%P: %H: @local call to ifunc %s\n"),
4285 abfd, sec, rel->r_offset,
4286 h->root.root.string);
4287 bfd_set_error (bfd_error_bad_value);
4288 return FALSE;
4289 }
4290 h->needs_plt = 1;
4291 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
4292 return FALSE;
4293 }
4294 break;
4295
4296 /* This relocation describes the C++ object vtable hierarchy.
4297 Reconstruct it for later use during GC. */
4298 case R_PPC_GNU_VTINHERIT:
4299 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
4300 return FALSE;
4301 break;
4302
4303 /* This relocation describes which C++ vtable entries are actually
4304 used. Record for later use during GC. */
4305 case R_PPC_GNU_VTENTRY:
4306 BFD_ASSERT (h != NULL);
4307 if (h != NULL
4308 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
4309 return FALSE;
4310 break;
4311
4312 /* We shouldn't really be seeing these. */
4313 case R_PPC_TPREL32:
4314 case R_PPC_TPREL16:
4315 case R_PPC_TPREL16_LO:
4316 case R_PPC_TPREL16_HI:
4317 case R_PPC_TPREL16_HA:
4318 if (info->shared)
4319 info->flags |= DF_STATIC_TLS;
4320 goto dodyn;
4321
4322 /* Nor these. */
4323 case R_PPC_DTPMOD32:
4324 case R_PPC_DTPREL32:
4325 goto dodyn;
4326
4327 case R_PPC_REL32:
4328 if (h == NULL
4329 && got2 != NULL
4330 && (sec->flags & SEC_CODE) != 0
4331 && info->shared
4332 && htab->plt_type == PLT_UNSET)
4333 {
4334 /* Old -fPIC gcc code has .long LCTOC1-LCFx just before
4335 the start of a function, which assembles to a REL32
4336 reference to .got2. If we detect one of these, then
4337 force the old PLT layout because the linker cannot
4338 reliably deduce the GOT pointer value needed for
4339 PLT call stubs. */
4340 asection *s;
4341 Elf_Internal_Sym *isym;
4342
4343 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
4344 abfd, r_symndx);
4345 if (isym == NULL)
4346 return FALSE;
4347
4348 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
4349 if (s == got2)
4350 {
4351 htab->plt_type = PLT_OLD;
4352 htab->old_bfd = abfd;
4353 }
4354 }
4355 if (h == NULL || h == htab->elf.hgot)
4356 break;
4357 /* fall through */
4358
4359 case R_PPC_ADDR32:
4360 case R_PPC_ADDR16:
4361 case R_PPC_ADDR16_LO:
4362 case R_PPC_ADDR16_HI:
4363 case R_PPC_ADDR16_HA:
4364 case R_PPC_UADDR32:
4365 case R_PPC_UADDR16:
4366 if (h != NULL && !info->shared)
4367 {
4368 /* We may need a plt entry if the symbol turns out to be
4369 a function defined in a dynamic object. */
4370 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
4371 return FALSE;
4372
4373 /* We may need a copy reloc too. */
4374 h->non_got_ref = 1;
4375 h->pointer_equality_needed = 1;
4376 }
4377 goto dodyn;
4378
4379 case R_PPC_REL24:
4380 case R_PPC_REL14:
4381 case R_PPC_REL14_BRTAKEN:
4382 case R_PPC_REL14_BRNTAKEN:
4383 if (h == NULL)
4384 break;
4385 if (h == htab->elf.hgot)
4386 {
4387 if (htab->plt_type == PLT_UNSET)
4388 {
4389 htab->plt_type = PLT_OLD;
4390 htab->old_bfd = abfd;
4391 }
4392 break;
4393 }
4394 /* fall through */
4395
4396 case R_PPC_ADDR24:
4397 case R_PPC_ADDR14:
4398 case R_PPC_ADDR14_BRTAKEN:
4399 case R_PPC_ADDR14_BRNTAKEN:
4400 if (h != NULL && !info->shared)
4401 {
4402 /* We may need a plt entry if the symbol turns out to be
4403 a function defined in a dynamic object. */
4404 h->needs_plt = 1;
4405 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
4406 return FALSE;
4407 break;
4408 }
4409
4410 dodyn:
4411 /* If we are creating a shared library, and this is a reloc
4412 against a global symbol, or a non PC relative reloc
4413 against a local symbol, then we need to copy the reloc
4414 into the shared library. However, if we are linking with
4415 -Bsymbolic, we do not need to copy a reloc against a
4416 global symbol which is defined in an object we are
4417 including in the link (i.e., DEF_REGULAR is set). At
4418 this point we have not seen all the input files, so it is
4419 possible that DEF_REGULAR is not set now but will be set
4420 later (it is never cleared). In case of a weak definition,
4421 DEF_REGULAR may be cleared later by a strong definition in
4422 a shared library. We account for that possibility below by
4423 storing information in the dyn_relocs field of the hash
4424 table entry. A similar situation occurs when creating
4425 shared libraries and symbol visibility changes render the
4426 symbol local.
4427
4428 If on the other hand, we are creating an executable, we
4429 may need to keep relocations for symbols satisfied by a
4430 dynamic library if we manage to avoid copy relocs for the
4431 symbol. */
4432 if ((info->shared
4433 && (must_be_dyn_reloc (info, r_type)
4434 || (h != NULL
4435 && (!SYMBOLIC_BIND (info, h)
4436 || h->root.type == bfd_link_hash_defweak
4437 || !h->def_regular))))
4438 || (ELIMINATE_COPY_RELOCS
4439 && !info->shared
4440 && h != NULL
4441 && (h->root.type == bfd_link_hash_defweak
4442 || !h->def_regular)))
4443 {
4444 #ifdef DEBUG
4445 fprintf (stderr,
4446 "ppc_elf_check_relocs needs to "
4447 "create relocation for %s\n",
4448 (h && h->root.root.string
4449 ? h->root.root.string : "<unknown>"));
4450 #endif
4451 if (sreloc == NULL)
4452 {
4453 if (htab->elf.dynobj == NULL)
4454 htab->elf.dynobj = abfd;
4455
4456 sreloc = _bfd_elf_make_dynamic_reloc_section
4457 (sec, htab->elf.dynobj, 2, abfd, /*rela?*/ TRUE);
4458
4459 if (sreloc == NULL)
4460 return FALSE;
4461 }
4462
4463 /* If this is a global symbol, we count the number of
4464 relocations we need for this symbol. */
4465 if (h != NULL)
4466 {
4467 struct elf_dyn_relocs *p;
4468 struct elf_dyn_relocs **rel_head;
4469
4470 rel_head = &ppc_elf_hash_entry (h)->dyn_relocs;
4471 p = *rel_head;
4472 if (p == NULL || p->sec != sec)
4473 {
4474 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
4475 if (p == NULL)
4476 return FALSE;
4477 p->next = *rel_head;
4478 *rel_head = p;
4479 p->sec = sec;
4480 p->count = 0;
4481 p->pc_count = 0;
4482 }
4483 p->count += 1;
4484 if (!must_be_dyn_reloc (info, r_type))
4485 p->pc_count += 1;
4486 }
4487 else
4488 {
4489 /* Track dynamic relocs needed for local syms too.
4490 We really need local syms available to do this
4491 easily. Oh well. */
4492 struct ppc_dyn_relocs *p;
4493 struct ppc_dyn_relocs **rel_head;
4494 bfd_boolean is_ifunc;
4495 asection *s;
4496 void *vpp;
4497 Elf_Internal_Sym *isym;
4498
4499 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
4500 abfd, r_symndx);
4501 if (isym == NULL)
4502 return FALSE;
4503
4504 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
4505 if (s == NULL)
4506 s = sec;
4507
4508 vpp = &elf_section_data (s)->local_dynrel;
4509 rel_head = (struct ppc_dyn_relocs **) vpp;
4510 is_ifunc = ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC;
4511 p = *rel_head;
4512 if (p != NULL && p->sec == sec && p->ifunc != is_ifunc)
4513 p = p->next;
4514 if (p == NULL || p->sec != sec || p->ifunc != is_ifunc)
4515 {
4516 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
4517 if (p == NULL)
4518 return FALSE;
4519 p->next = *rel_head;
4520 *rel_head = p;
4521 p->sec = sec;
4522 p->ifunc = is_ifunc;
4523 p->count = 0;
4524 }
4525 p->count += 1;
4526 }
4527 }
4528
4529 break;
4530 }
4531 }
4532
4533 return TRUE;
4534 }
4535 \f
4536
4537 /* Merge object attributes from IBFD into OBFD. Raise an error if
4538 there are conflicting attributes. */
4539 static bfd_boolean
4540 ppc_elf_merge_obj_attributes (bfd *ibfd, bfd *obfd)
4541 {
4542 obj_attribute *in_attr, *in_attrs;
4543 obj_attribute *out_attr, *out_attrs;
4544
4545 if (!elf_known_obj_attributes_proc (obfd)[0].i)
4546 {
4547 /* This is the first object. Copy the attributes. */
4548 _bfd_elf_copy_obj_attributes (ibfd, obfd);
4549
4550 /* Use the Tag_null value to indicate the attributes have been
4551 initialized. */
4552 elf_known_obj_attributes_proc (obfd)[0].i = 1;
4553
4554 return TRUE;
4555 }
4556
4557 in_attrs = elf_known_obj_attributes (ibfd)[OBJ_ATTR_GNU];
4558 out_attrs = elf_known_obj_attributes (obfd)[OBJ_ATTR_GNU];
4559
4560 /* Check for conflicting Tag_GNU_Power_ABI_FP attributes and merge
4561 non-conflicting ones. */
4562 in_attr = &in_attrs[Tag_GNU_Power_ABI_FP];
4563 out_attr = &out_attrs[Tag_GNU_Power_ABI_FP];
4564 if (in_attr->i != out_attr->i)
4565 {
4566 out_attr->type = 1;
4567 if (out_attr->i == 0)
4568 out_attr->i = in_attr->i;
4569 else if (in_attr->i == 0)
4570 ;
4571 else if (out_attr->i == 1 && in_attr->i == 2)
4572 _bfd_error_handler
4573 (_("Warning: %B uses hard float, %B uses soft float"), obfd, ibfd);
4574 else if (out_attr->i == 1 && in_attr->i == 3)
4575 _bfd_error_handler
4576 (_("Warning: %B uses double-precision hard float, %B uses single-precision hard float"),
4577 obfd, ibfd);
4578 else if (out_attr->i == 3 && in_attr->i == 1)
4579 _bfd_error_handler
4580 (_("Warning: %B uses double-precision hard float, %B uses single-precision hard float"),
4581 ibfd, obfd);
4582 else if (out_attr->i == 3 && in_attr->i == 2)
4583 _bfd_error_handler
4584 (_("Warning: %B uses soft float, %B uses single-precision hard float"),
4585 ibfd, obfd);
4586 else if (out_attr->i == 2 && (in_attr->i == 1 || in_attr->i == 3))
4587 _bfd_error_handler
4588 (_("Warning: %B uses hard float, %B uses soft float"), ibfd, obfd);
4589 else if (in_attr->i > 3)
4590 _bfd_error_handler
4591 (_("Warning: %B uses unknown floating point ABI %d"), ibfd,
4592 in_attr->i);
4593 else
4594 _bfd_error_handler
4595 (_("Warning: %B uses unknown floating point ABI %d"), obfd,
4596 out_attr->i);
4597 }
4598
4599 /* Check for conflicting Tag_GNU_Power_ABI_Vector attributes and
4600 merge non-conflicting ones. */
4601 in_attr = &in_attrs[Tag_GNU_Power_ABI_Vector];
4602 out_attr = &out_attrs[Tag_GNU_Power_ABI_Vector];
4603 if (in_attr->i != out_attr->i)
4604 {
4605 const char *in_abi = NULL, *out_abi = NULL;
4606
4607 switch (in_attr->i)
4608 {
4609 case 1: in_abi = "generic"; break;
4610 case 2: in_abi = "AltiVec"; break;
4611 case 3: in_abi = "SPE"; break;
4612 }
4613
4614 switch (out_attr->i)
4615 {
4616 case 1: out_abi = "generic"; break;
4617 case 2: out_abi = "AltiVec"; break;
4618 case 3: out_abi = "SPE"; break;
4619 }
4620
4621 out_attr->type = 1;
4622 if (out_attr->i == 0)
4623 out_attr->i = in_attr->i;
4624 else if (in_attr->i == 0)
4625 ;
4626 /* For now, allow generic to transition to AltiVec or SPE
4627 without a warning. If GCC marked files with their stack
4628 alignment and used don't-care markings for files which are
4629 not affected by the vector ABI, we could warn about this
4630 case too. */
4631 else if (out_attr->i == 1)
4632 out_attr->i = in_attr->i;
4633 else if (in_attr->i == 1)
4634 ;
4635 else if (in_abi == NULL)
4636 _bfd_error_handler
4637 (_("Warning: %B uses unknown vector ABI %d"), ibfd,
4638 in_attr->i);
4639 else if (out_abi == NULL)
4640 _bfd_error_handler
4641 (_("Warning: %B uses unknown vector ABI %d"), obfd,
4642 in_attr->i);
4643 else
4644 _bfd_error_handler
4645 (_("Warning: %B uses vector ABI \"%s\", %B uses \"%s\""),
4646 ibfd, obfd, in_abi, out_abi);
4647 }
4648
4649 /* Check for conflicting Tag_GNU_Power_ABI_Struct_Return attributes
4650 and merge non-conflicting ones. */
4651 in_attr = &in_attrs[Tag_GNU_Power_ABI_Struct_Return];
4652 out_attr = &out_attrs[Tag_GNU_Power_ABI_Struct_Return];
4653 if (in_attr->i != out_attr->i)
4654 {
4655 out_attr->type = 1;
4656 if (out_attr->i == 0)
4657 out_attr->i = in_attr->i;
4658 else if (in_attr->i == 0)
4659 ;
4660 else if (out_attr->i == 1 && in_attr->i == 2)
4661 _bfd_error_handler
4662 (_("Warning: %B uses r3/r4 for small structure returns, %B uses memory"), obfd, ibfd);
4663 else if (out_attr->i == 2 && in_attr->i == 1)
4664 _bfd_error_handler
4665 (_("Warning: %B uses r3/r4 for small structure returns, %B uses memory"), ibfd, obfd);
4666 else if (in_attr->i > 2)
4667 _bfd_error_handler
4668 (_("Warning: %B uses unknown small structure return convention %d"), ibfd,
4669 in_attr->i);
4670 else
4671 _bfd_error_handler
4672 (_("Warning: %B uses unknown small structure return convention %d"), obfd,
4673 out_attr->i);
4674 }
4675
4676 /* Merge Tag_compatibility attributes and any common GNU ones. */
4677 _bfd_elf_merge_object_attributes (ibfd, obfd);
4678
4679 return TRUE;
4680 }
4681
4682 /* Merge backend specific data from an object file to the output
4683 object file when linking. */
4684
4685 static bfd_boolean
4686 ppc_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
4687 {
4688 flagword old_flags;
4689 flagword new_flags;
4690 bfd_boolean error;
4691
4692 if (!is_ppc_elf (ibfd) || !is_ppc_elf (obfd))
4693 return TRUE;
4694
4695 /* Check if we have the same endianness. */
4696 if (! _bfd_generic_verify_endian_match (ibfd, obfd))
4697 return FALSE;
4698
4699 if (!ppc_elf_merge_obj_attributes (ibfd, obfd))
4700 return FALSE;
4701
4702 new_flags = elf_elfheader (ibfd)->e_flags;
4703 old_flags = elf_elfheader (obfd)->e_flags;
4704 if (!elf_flags_init (obfd))
4705 {
4706 /* First call, no flags set. */
4707 elf_flags_init (obfd) = TRUE;
4708 elf_elfheader (obfd)->e_flags = new_flags;
4709 }
4710
4711 /* Compatible flags are ok. */
4712 else if (new_flags == old_flags)
4713 ;
4714
4715 /* Incompatible flags. */
4716 else
4717 {
4718 /* Warn about -mrelocatable mismatch. Allow -mrelocatable-lib
4719 to be linked with either. */
4720 error = FALSE;
4721 if ((new_flags & EF_PPC_RELOCATABLE) != 0
4722 && (old_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0)
4723 {
4724 error = TRUE;
4725 (*_bfd_error_handler)
4726 (_("%B: compiled with -mrelocatable and linked with "
4727 "modules compiled normally"), ibfd);
4728 }
4729 else if ((new_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0
4730 && (old_flags & EF_PPC_RELOCATABLE) != 0)
4731 {
4732 error = TRUE;
4733 (*_bfd_error_handler)
4734 (_("%B: compiled normally and linked with "
4735 "modules compiled with -mrelocatable"), ibfd);
4736 }
4737
4738 /* The output is -mrelocatable-lib iff both the input files are. */
4739 if (! (new_flags & EF_PPC_RELOCATABLE_LIB))
4740 elf_elfheader (obfd)->e_flags &= ~EF_PPC_RELOCATABLE_LIB;
4741
4742 /* The output is -mrelocatable iff it can't be -mrelocatable-lib,
4743 but each input file is either -mrelocatable or -mrelocatable-lib. */
4744 if (! (elf_elfheader (obfd)->e_flags & EF_PPC_RELOCATABLE_LIB)
4745 && (new_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE))
4746 && (old_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE)))
4747 elf_elfheader (obfd)->e_flags |= EF_PPC_RELOCATABLE;
4748
4749 /* Do not warn about eabi vs. V.4 mismatch, just or in the bit if
4750 any module uses it. */
4751 elf_elfheader (obfd)->e_flags |= (new_flags & EF_PPC_EMB);
4752
4753 new_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
4754 old_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
4755
4756 /* Warn about any other mismatches. */
4757 if (new_flags != old_flags)
4758 {
4759 error = TRUE;
4760 (*_bfd_error_handler)
4761 (_("%B: uses different e_flags (0x%lx) fields "
4762 "than previous modules (0x%lx)"),
4763 ibfd, (long) new_flags, (long) old_flags);
4764 }
4765
4766 if (error)
4767 {
4768 bfd_set_error (bfd_error_bad_value);
4769 return FALSE;
4770 }
4771 }
4772
4773 return TRUE;
4774 }
4775
4776 static void
4777 ppc_elf_vle_split16 (bfd *output_bfd, bfd_byte *loc,
4778 bfd_vma value,
4779 split16_format_type split16_format)
4780
4781 {
4782 unsigned int insn, top5;
4783
4784 insn = bfd_get_32 (output_bfd, loc);
4785 top5 = value & 0xf800;
4786 top5 = top5 << (split16_format == split16a_type ? 9 : 5);
4787 insn |= top5;
4788 insn |= value & 0x7ff;
4789 bfd_put_32 (output_bfd, insn, loc);
4790 }
4791
4792 \f
4793 /* Choose which PLT scheme to use, and set .plt flags appropriately.
4794 Returns -1 on error, 0 for old PLT, 1 for new PLT. */
4795 int
4796 ppc_elf_select_plt_layout (bfd *output_bfd ATTRIBUTE_UNUSED,
4797 struct bfd_link_info *info)
4798 {
4799 struct ppc_elf_link_hash_table *htab;
4800 flagword flags;
4801
4802 htab = ppc_elf_hash_table (info);
4803
4804 if (htab->plt_type == PLT_UNSET)
4805 {
4806 struct elf_link_hash_entry *h;
4807
4808 if (htab->params->plt_style == PLT_OLD)
4809 htab->plt_type = PLT_OLD;
4810 else if (info->shared
4811 && htab->elf.dynamic_sections_created
4812 && (h = elf_link_hash_lookup (&htab->elf, "_mcount",
4813 FALSE, FALSE, TRUE)) != NULL
4814 && (h->type == STT_FUNC
4815 || h->needs_plt)
4816 && h->ref_regular
4817 && !(SYMBOL_CALLS_LOCAL (info, h)
4818 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
4819 && h->root.type == bfd_link_hash_undefweak)))
4820 {
4821 /* Profiling of shared libs (and pies) is not supported with
4822 secure plt, because ppc32 does profiling before a
4823 function prologue and a secure plt pic call stubs needs
4824 r30 to be set up. */
4825 htab->plt_type = PLT_OLD;
4826 }
4827 else
4828 {
4829 bfd *ibfd;
4830 enum ppc_elf_plt_type plt_type = htab->params->plt_style;
4831
4832 /* Look through the reloc flags left by ppc_elf_check_relocs.
4833 Use the old style bss plt if a file makes plt calls
4834 without using the new relocs, and if ld isn't given
4835 --secure-plt and we never see REL16 relocs. */
4836 if (plt_type == PLT_UNSET)
4837 plt_type = PLT_OLD;
4838 for (ibfd = info->input_bfds; ibfd; ibfd = ibfd->link.next)
4839 if (is_ppc_elf (ibfd))
4840 {
4841 if (ppc_elf_tdata (ibfd)->has_rel16)
4842 plt_type = PLT_NEW;
4843 else if (ppc_elf_tdata (ibfd)->makes_plt_call)
4844 {
4845 plt_type = PLT_OLD;
4846 htab->old_bfd = ibfd;
4847 break;
4848 }
4849 }
4850 htab->plt_type = plt_type;
4851 }
4852 }
4853 if (htab->plt_type == PLT_OLD && htab->params->plt_style == PLT_NEW)
4854 {
4855 if (htab->old_bfd != NULL)
4856 info->callbacks->einfo (_("%P: bss-plt forced due to %B\n"),
4857 htab->old_bfd);
4858 else
4859 info->callbacks->einfo (_("%P: bss-plt forced by profiling\n"));
4860 }
4861
4862 BFD_ASSERT (htab->plt_type != PLT_VXWORKS);
4863
4864 if (htab->plt_type == PLT_NEW)
4865 {
4866 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
4867 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4868
4869 /* The new PLT is a loaded section. */
4870 if (htab->plt != NULL
4871 && !bfd_set_section_flags (htab->elf.dynobj, htab->plt, flags))
4872 return -1;
4873
4874 /* The new GOT is not executable. */
4875 if (htab->got != NULL
4876 && !bfd_set_section_flags (htab->elf.dynobj, htab->got, flags))
4877 return -1;
4878 }
4879 else
4880 {
4881 /* Stop an unused .glink section from affecting .text alignment. */
4882 if (htab->glink != NULL
4883 && !bfd_set_section_alignment (htab->elf.dynobj, htab->glink, 0))
4884 return -1;
4885 }
4886 return htab->plt_type == PLT_NEW;
4887 }
4888 \f
4889 /* Return the section that should be marked against GC for a given
4890 relocation. */
4891
4892 static asection *
4893 ppc_elf_gc_mark_hook (asection *sec,
4894 struct bfd_link_info *info,
4895 Elf_Internal_Rela *rel,
4896 struct elf_link_hash_entry *h,
4897 Elf_Internal_Sym *sym)
4898 {
4899 if (h != NULL)
4900 switch (ELF32_R_TYPE (rel->r_info))
4901 {
4902 case R_PPC_GNU_VTINHERIT:
4903 case R_PPC_GNU_VTENTRY:
4904 return NULL;
4905 }
4906
4907 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
4908 }
4909
4910 /* Update the got, plt and dynamic reloc reference counts for the
4911 section being removed. */
4912
4913 static bfd_boolean
4914 ppc_elf_gc_sweep_hook (bfd *abfd,
4915 struct bfd_link_info *info,
4916 asection *sec,
4917 const Elf_Internal_Rela *relocs)
4918 {
4919 struct ppc_elf_link_hash_table *htab;
4920 Elf_Internal_Shdr *symtab_hdr;
4921 struct elf_link_hash_entry **sym_hashes;
4922 bfd_signed_vma *local_got_refcounts;
4923 const Elf_Internal_Rela *rel, *relend;
4924 asection *got2;
4925
4926 if (info->relocatable)
4927 return TRUE;
4928
4929 if ((sec->flags & SEC_ALLOC) == 0)
4930 return TRUE;
4931
4932 elf_section_data (sec)->local_dynrel = NULL;
4933
4934 htab = ppc_elf_hash_table (info);
4935 symtab_hdr = &elf_symtab_hdr (abfd);
4936 sym_hashes = elf_sym_hashes (abfd);
4937 local_got_refcounts = elf_local_got_refcounts (abfd);
4938 got2 = bfd_get_section_by_name (abfd, ".got2");
4939
4940 relend = relocs + sec->reloc_count;
4941 for (rel = relocs; rel < relend; rel++)
4942 {
4943 unsigned long r_symndx;
4944 enum elf_ppc_reloc_type r_type;
4945 struct elf_link_hash_entry *h = NULL;
4946
4947 r_symndx = ELF32_R_SYM (rel->r_info);
4948 if (r_symndx >= symtab_hdr->sh_info)
4949 {
4950 struct elf_dyn_relocs **pp, *p;
4951 struct ppc_elf_link_hash_entry *eh;
4952
4953 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4954 while (h->root.type == bfd_link_hash_indirect
4955 || h->root.type == bfd_link_hash_warning)
4956 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4957 eh = (struct ppc_elf_link_hash_entry *) h;
4958
4959 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
4960 if (p->sec == sec)
4961 {
4962 /* Everything must go for SEC. */
4963 *pp = p->next;
4964 break;
4965 }
4966 }
4967
4968 r_type = ELF32_R_TYPE (rel->r_info);
4969 if (!htab->is_vxworks
4970 && h == NULL
4971 && local_got_refcounts != NULL
4972 && (!info->shared
4973 || is_branch_reloc (r_type)))
4974 {
4975 struct plt_entry **local_plt = (struct plt_entry **)
4976 (local_got_refcounts + symtab_hdr->sh_info);
4977 char *local_got_tls_masks = (char *)
4978 (local_plt + symtab_hdr->sh_info);
4979 if ((local_got_tls_masks[r_symndx] & PLT_IFUNC) != 0)
4980 {
4981 struct plt_entry **ifunc = local_plt + r_symndx;
4982 bfd_vma addend = 0;
4983 struct plt_entry *ent;
4984
4985 if (r_type == R_PPC_PLTREL24 && info->shared)
4986 addend = rel->r_addend;
4987 ent = find_plt_ent (ifunc, got2, addend);
4988 if (ent->plt.refcount > 0)
4989 ent->plt.refcount -= 1;
4990 continue;
4991 }
4992 }
4993
4994 switch (r_type)
4995 {
4996 case R_PPC_GOT_TLSLD16:
4997 case R_PPC_GOT_TLSLD16_LO:
4998 case R_PPC_GOT_TLSLD16_HI:
4999 case R_PPC_GOT_TLSLD16_HA:
5000 case R_PPC_GOT_TLSGD16:
5001 case R_PPC_GOT_TLSGD16_LO:
5002 case R_PPC_GOT_TLSGD16_HI:
5003 case R_PPC_GOT_TLSGD16_HA:
5004 case R_PPC_GOT_TPREL16:
5005 case R_PPC_GOT_TPREL16_LO:
5006 case R_PPC_GOT_TPREL16_HI:
5007 case R_PPC_GOT_TPREL16_HA:
5008 case R_PPC_GOT_DTPREL16:
5009 case R_PPC_GOT_DTPREL16_LO:
5010 case R_PPC_GOT_DTPREL16_HI:
5011 case R_PPC_GOT_DTPREL16_HA:
5012 case R_PPC_GOT16:
5013 case R_PPC_GOT16_LO:
5014 case R_PPC_GOT16_HI:
5015 case R_PPC_GOT16_HA:
5016 if (h != NULL)
5017 {
5018 if (h->got.refcount > 0)
5019 h->got.refcount--;
5020 if (!info->shared)
5021 {
5022 struct plt_entry *ent;
5023
5024 ent = find_plt_ent (&h->plt.plist, NULL, 0);
5025 if (ent != NULL && ent->plt.refcount > 0)
5026 ent->plt.refcount -= 1;
5027 }
5028 }
5029 else if (local_got_refcounts != NULL)
5030 {
5031 if (local_got_refcounts[r_symndx] > 0)
5032 local_got_refcounts[r_symndx]--;
5033 }
5034 break;
5035
5036 case R_PPC_REL24:
5037 case R_PPC_REL14:
5038 case R_PPC_REL14_BRTAKEN:
5039 case R_PPC_REL14_BRNTAKEN:
5040 case R_PPC_REL32:
5041 if (h == NULL || h == htab->elf.hgot)
5042 break;
5043 /* Fall thru */
5044
5045 case R_PPC_ADDR32:
5046 case R_PPC_ADDR24:
5047 case R_PPC_ADDR16:
5048 case R_PPC_ADDR16_LO:
5049 case R_PPC_ADDR16_HI:
5050 case R_PPC_ADDR16_HA:
5051 case R_PPC_ADDR14:
5052 case R_PPC_ADDR14_BRTAKEN:
5053 case R_PPC_ADDR14_BRNTAKEN:
5054 case R_PPC_UADDR32:
5055 case R_PPC_UADDR16:
5056 if (info->shared)
5057 break;
5058
5059 case R_PPC_PLT32:
5060 case R_PPC_PLTREL24:
5061 case R_PPC_PLTREL32:
5062 case R_PPC_PLT16_LO:
5063 case R_PPC_PLT16_HI:
5064 case R_PPC_PLT16_HA:
5065 if (h != NULL)
5066 {
5067 bfd_vma addend = 0;
5068 struct plt_entry *ent;
5069
5070 if (r_type == R_PPC_PLTREL24 && info->shared)
5071 addend = rel->r_addend;
5072 ent = find_plt_ent (&h->plt.plist, got2, addend);
5073 if (ent != NULL && ent->plt.refcount > 0)
5074 ent->plt.refcount -= 1;
5075 }
5076 break;
5077
5078 default:
5079 break;
5080 }
5081 }
5082 return TRUE;
5083 }
5084 \f
5085 /* Set plt output section type, htab->tls_get_addr, and call the
5086 generic ELF tls_setup function. */
5087
5088 asection *
5089 ppc_elf_tls_setup (bfd *obfd, struct bfd_link_info *info)
5090 {
5091 struct ppc_elf_link_hash_table *htab;
5092
5093 htab = ppc_elf_hash_table (info);
5094 htab->tls_get_addr = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
5095 FALSE, FALSE, TRUE);
5096 if (htab->plt_type != PLT_NEW)
5097 htab->params->no_tls_get_addr_opt = TRUE;
5098
5099 if (!htab->params->no_tls_get_addr_opt)
5100 {
5101 struct elf_link_hash_entry *opt, *tga;
5102 opt = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_opt",
5103 FALSE, FALSE, TRUE);
5104 if (opt != NULL
5105 && (opt->root.type == bfd_link_hash_defined
5106 || opt->root.type == bfd_link_hash_defweak))
5107 {
5108 /* If glibc supports an optimized __tls_get_addr call stub,
5109 signalled by the presence of __tls_get_addr_opt, and we'll
5110 be calling __tls_get_addr via a plt call stub, then
5111 make __tls_get_addr point to __tls_get_addr_opt. */
5112 tga = htab->tls_get_addr;
5113 if (htab->elf.dynamic_sections_created
5114 && tga != NULL
5115 && (tga->type == STT_FUNC
5116 || tga->needs_plt)
5117 && !(SYMBOL_CALLS_LOCAL (info, tga)
5118 || (ELF_ST_VISIBILITY (tga->other) != STV_DEFAULT
5119 && tga->root.type == bfd_link_hash_undefweak)))
5120 {
5121 struct plt_entry *ent;
5122 for (ent = tga->plt.plist; ent != NULL; ent = ent->next)
5123 if (ent->plt.refcount > 0)
5124 break;
5125 if (ent != NULL)
5126 {
5127 tga->root.type = bfd_link_hash_indirect;
5128 tga->root.u.i.link = &opt->root;
5129 ppc_elf_copy_indirect_symbol (info, opt, tga);
5130 if (opt->dynindx != -1)
5131 {
5132 /* Use __tls_get_addr_opt in dynamic relocations. */
5133 opt->dynindx = -1;
5134 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
5135 opt->dynstr_index);
5136 if (!bfd_elf_link_record_dynamic_symbol (info, opt))
5137 return FALSE;
5138 }
5139 htab->tls_get_addr = opt;
5140 }
5141 }
5142 }
5143 else
5144 htab->params->no_tls_get_addr_opt = TRUE;
5145 }
5146 if (htab->plt_type == PLT_NEW
5147 && htab->plt != NULL
5148 && htab->plt->output_section != NULL)
5149 {
5150 elf_section_type (htab->plt->output_section) = SHT_PROGBITS;
5151 elf_section_flags (htab->plt->output_section) = SHF_ALLOC + SHF_WRITE;
5152 }
5153
5154 return _bfd_elf_tls_setup (obfd, info);
5155 }
5156
5157 /* Return TRUE iff REL is a branch reloc with a global symbol matching
5158 HASH. */
5159
5160 static bfd_boolean
5161 branch_reloc_hash_match (const bfd *ibfd,
5162 const Elf_Internal_Rela *rel,
5163 const struct elf_link_hash_entry *hash)
5164 {
5165 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
5166 enum elf_ppc_reloc_type r_type = ELF32_R_TYPE (rel->r_info);
5167 unsigned int r_symndx = ELF32_R_SYM (rel->r_info);
5168
5169 if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type))
5170 {
5171 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
5172 struct elf_link_hash_entry *h;
5173
5174 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5175 while (h->root.type == bfd_link_hash_indirect
5176 || h->root.type == bfd_link_hash_warning)
5177 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5178 if (h == hash)
5179 return TRUE;
5180 }
5181 return FALSE;
5182 }
5183
5184 /* Run through all the TLS relocs looking for optimization
5185 opportunities. */
5186
5187 bfd_boolean
5188 ppc_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED,
5189 struct bfd_link_info *info)
5190 {
5191 bfd *ibfd;
5192 asection *sec;
5193 struct ppc_elf_link_hash_table *htab;
5194 int pass;
5195
5196 if (info->relocatable || !info->executable)
5197 return TRUE;
5198
5199 htab = ppc_elf_hash_table (info);
5200 if (htab == NULL)
5201 return FALSE;
5202
5203 /* Make two passes through the relocs. First time check that tls
5204 relocs involved in setting up a tls_get_addr call are indeed
5205 followed by such a call. If they are not, don't do any tls
5206 optimization. On the second pass twiddle tls_mask flags to
5207 notify relocate_section that optimization can be done, and
5208 adjust got and plt refcounts. */
5209 for (pass = 0; pass < 2; ++pass)
5210 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
5211 {
5212 Elf_Internal_Sym *locsyms = NULL;
5213 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
5214 asection *got2 = bfd_get_section_by_name (ibfd, ".got2");
5215
5216 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
5217 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
5218 {
5219 Elf_Internal_Rela *relstart, *rel, *relend;
5220 int expecting_tls_get_addr = 0;
5221
5222 /* Read the relocations. */
5223 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
5224 info->keep_memory);
5225 if (relstart == NULL)
5226 return FALSE;
5227
5228 relend = relstart + sec->reloc_count;
5229 for (rel = relstart; rel < relend; rel++)
5230 {
5231 enum elf_ppc_reloc_type r_type;
5232 unsigned long r_symndx;
5233 struct elf_link_hash_entry *h = NULL;
5234 char *tls_mask;
5235 char tls_set, tls_clear;
5236 bfd_boolean is_local;
5237 bfd_signed_vma *got_count;
5238
5239 r_symndx = ELF32_R_SYM (rel->r_info);
5240 if (r_symndx >= symtab_hdr->sh_info)
5241 {
5242 struct elf_link_hash_entry **sym_hashes;
5243
5244 sym_hashes = elf_sym_hashes (ibfd);
5245 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5246 while (h->root.type == bfd_link_hash_indirect
5247 || h->root.type == bfd_link_hash_warning)
5248 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5249 }
5250
5251 is_local = FALSE;
5252 if (h == NULL
5253 || !h->def_dynamic)
5254 is_local = TRUE;
5255
5256 r_type = ELF32_R_TYPE (rel->r_info);
5257 /* If this section has old-style __tls_get_addr calls
5258 without marker relocs, then check that each
5259 __tls_get_addr call reloc is preceded by a reloc
5260 that conceivably belongs to the __tls_get_addr arg
5261 setup insn. If we don't find matching arg setup
5262 relocs, don't do any tls optimization. */
5263 if (pass == 0
5264 && sec->has_tls_get_addr_call
5265 && h != NULL
5266 && h == htab->tls_get_addr
5267 && !expecting_tls_get_addr
5268 && is_branch_reloc (r_type))
5269 {
5270 info->callbacks->minfo ("%H __tls_get_addr lost arg, "
5271 "TLS optimization disabled\n",
5272 ibfd, sec, rel->r_offset);
5273 if (elf_section_data (sec)->relocs != relstart)
5274 free (relstart);
5275 return TRUE;
5276 }
5277
5278 expecting_tls_get_addr = 0;
5279 switch (r_type)
5280 {
5281 case R_PPC_GOT_TLSLD16:
5282 case R_PPC_GOT_TLSLD16_LO:
5283 expecting_tls_get_addr = 1;
5284 /* Fall thru */
5285
5286 case R_PPC_GOT_TLSLD16_HI:
5287 case R_PPC_GOT_TLSLD16_HA:
5288 /* These relocs should never be against a symbol
5289 defined in a shared lib. Leave them alone if
5290 that turns out to be the case. */
5291 if (!is_local)
5292 continue;
5293
5294 /* LD -> LE */
5295 tls_set = 0;
5296 tls_clear = TLS_LD;
5297 break;
5298
5299 case R_PPC_GOT_TLSGD16:
5300 case R_PPC_GOT_TLSGD16_LO:
5301 expecting_tls_get_addr = 1;
5302 /* Fall thru */
5303
5304 case R_PPC_GOT_TLSGD16_HI:
5305 case R_PPC_GOT_TLSGD16_HA:
5306 if (is_local)
5307 /* GD -> LE */
5308 tls_set = 0;
5309 else
5310 /* GD -> IE */
5311 tls_set = TLS_TLS | TLS_TPRELGD;
5312 tls_clear = TLS_GD;
5313 break;
5314
5315 case R_PPC_GOT_TPREL16:
5316 case R_PPC_GOT_TPREL16_LO:
5317 case R_PPC_GOT_TPREL16_HI:
5318 case R_PPC_GOT_TPREL16_HA:
5319 if (is_local)
5320 {
5321 /* IE -> LE */
5322 tls_set = 0;
5323 tls_clear = TLS_TPREL;
5324 break;
5325 }
5326 else
5327 continue;
5328
5329 case R_PPC_TLSGD:
5330 case R_PPC_TLSLD:
5331 expecting_tls_get_addr = 2;
5332 tls_set = 0;
5333 tls_clear = 0;
5334 break;
5335
5336 default:
5337 continue;
5338 }
5339
5340 if (pass == 0)
5341 {
5342 if (!expecting_tls_get_addr
5343 || (expecting_tls_get_addr == 1
5344 && !sec->has_tls_get_addr_call))
5345 continue;
5346
5347 if (rel + 1 < relend
5348 && branch_reloc_hash_match (ibfd, rel + 1,
5349 htab->tls_get_addr))
5350 continue;
5351
5352 /* Uh oh, we didn't find the expected call. We
5353 could just mark this symbol to exclude it
5354 from tls optimization but it's safer to skip
5355 the entire optimization. */
5356 info->callbacks->minfo (_("%H arg lost __tls_get_addr, "
5357 "TLS optimization disabled\n"),
5358 ibfd, sec, rel->r_offset);
5359 if (elf_section_data (sec)->relocs != relstart)
5360 free (relstart);
5361 return TRUE;
5362 }
5363
5364 if (expecting_tls_get_addr)
5365 {
5366 struct plt_entry *ent;
5367 bfd_vma addend = 0;
5368
5369 if (info->shared
5370 && ELF32_R_TYPE (rel[1].r_info) == R_PPC_PLTREL24)
5371 addend = rel[1].r_addend;
5372 ent = find_plt_ent (&htab->tls_get_addr->plt.plist,
5373 got2, addend);
5374 if (ent != NULL && ent->plt.refcount > 0)
5375 ent->plt.refcount -= 1;
5376
5377 if (expecting_tls_get_addr == 2)
5378 continue;
5379 }
5380
5381 if (h != NULL)
5382 {
5383 tls_mask = &ppc_elf_hash_entry (h)->tls_mask;
5384 got_count = &h->got.refcount;
5385 }
5386 else
5387 {
5388 bfd_signed_vma *lgot_refs;
5389 struct plt_entry **local_plt;
5390 char *lgot_masks;
5391
5392 if (locsyms == NULL)
5393 {
5394 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
5395 if (locsyms == NULL)
5396 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
5397 symtab_hdr->sh_info,
5398 0, NULL, NULL, NULL);
5399 if (locsyms == NULL)
5400 {
5401 if (elf_section_data (sec)->relocs != relstart)
5402 free (relstart);
5403 return FALSE;
5404 }
5405 }
5406 lgot_refs = elf_local_got_refcounts (ibfd);
5407 if (lgot_refs == NULL)
5408 abort ();
5409 local_plt = (struct plt_entry **)
5410 (lgot_refs + symtab_hdr->sh_info);
5411 lgot_masks = (char *) (local_plt + symtab_hdr->sh_info);
5412 tls_mask = &lgot_masks[r_symndx];
5413 got_count = &lgot_refs[r_symndx];
5414 }
5415
5416 if (tls_set == 0)
5417 {
5418 /* We managed to get rid of a got entry. */
5419 if (*got_count > 0)
5420 *got_count -= 1;
5421 }
5422
5423 *tls_mask |= tls_set;
5424 *tls_mask &= ~tls_clear;
5425 }
5426
5427 if (elf_section_data (sec)->relocs != relstart)
5428 free (relstart);
5429 }
5430
5431 if (locsyms != NULL
5432 && (symtab_hdr->contents != (unsigned char *) locsyms))
5433 {
5434 if (!info->keep_memory)
5435 free (locsyms);
5436 else
5437 symtab_hdr->contents = (unsigned char *) locsyms;
5438 }
5439 }
5440 return TRUE;
5441 }
5442 \f
5443 /* Return true if we have dynamic relocs that apply to read-only sections. */
5444
5445 static bfd_boolean
5446 readonly_dynrelocs (struct elf_link_hash_entry *h)
5447 {
5448 struct elf_dyn_relocs *p;
5449
5450 for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next)
5451 {
5452 asection *s = p->sec->output_section;
5453
5454 if (s != NULL
5455 && ((s->flags & (SEC_READONLY | SEC_ALLOC))
5456 == (SEC_READONLY | SEC_ALLOC)))
5457 return TRUE;
5458 }
5459 return FALSE;
5460 }
5461
5462 /* Adjust a symbol defined by a dynamic object and referenced by a
5463 regular object. The current definition is in some section of the
5464 dynamic object, but we're not including those sections. We have to
5465 change the definition to something the rest of the link can
5466 understand. */
5467
5468 static bfd_boolean
5469 ppc_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
5470 struct elf_link_hash_entry *h)
5471 {
5472 struct ppc_elf_link_hash_table *htab;
5473 asection *s;
5474
5475 #ifdef DEBUG
5476 fprintf (stderr, "ppc_elf_adjust_dynamic_symbol called for %s\n",
5477 h->root.root.string);
5478 #endif
5479
5480 /* Make sure we know what is going on here. */
5481 htab = ppc_elf_hash_table (info);
5482 BFD_ASSERT (htab->elf.dynobj != NULL
5483 && (h->needs_plt
5484 || h->type == STT_GNU_IFUNC
5485 || h->u.weakdef != NULL
5486 || (h->def_dynamic
5487 && h->ref_regular
5488 && !h->def_regular)));
5489
5490 /* Deal with function syms. */
5491 if (h->type == STT_FUNC
5492 || h->type == STT_GNU_IFUNC
5493 || h->needs_plt)
5494 {
5495 /* Clear procedure linkage table information for any symbol that
5496 won't need a .plt entry. */
5497 struct plt_entry *ent;
5498 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
5499 if (ent->plt.refcount > 0)
5500 break;
5501 if (ent == NULL
5502 || (h->type != STT_GNU_IFUNC
5503 && (SYMBOL_CALLS_LOCAL (info, h)
5504 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
5505 && h->root.type == bfd_link_hash_undefweak))))
5506 {
5507 /* A PLT entry is not required/allowed when:
5508
5509 1. We are not using ld.so; because then the PLT entry
5510 can't be set up, so we can't use one. In this case,
5511 ppc_elf_adjust_dynamic_symbol won't even be called.
5512
5513 2. GC has rendered the entry unused.
5514
5515 3. We know for certain that a call to this symbol
5516 will go to this object, or will remain undefined. */
5517 h->plt.plist = NULL;
5518 h->needs_plt = 0;
5519 h->pointer_equality_needed = 0;
5520 }
5521 else
5522 {
5523 /* Taking a function's address in a read/write section
5524 doesn't require us to define the function symbol in the
5525 executable on a plt call stub. A dynamic reloc can
5526 be used instead. */
5527 if (h->pointer_equality_needed
5528 && h->type != STT_GNU_IFUNC
5529 && !htab->is_vxworks
5530 && !ppc_elf_hash_entry (h)->has_sda_refs
5531 && !readonly_dynrelocs (h))
5532 {
5533 h->pointer_equality_needed = 0;
5534 h->non_got_ref = 0;
5535 }
5536
5537 /* After adjust_dynamic_symbol, non_got_ref set in the
5538 non-shared case means that we have allocated space in
5539 .dynbss for the symbol and thus dyn_relocs for this
5540 symbol should be discarded.
5541 If we get here we know we are making a PLT entry for this
5542 symbol, and in an executable we'd normally resolve
5543 relocations against this symbol to the PLT entry. Allow
5544 dynamic relocs if the reference is weak, and the dynamic
5545 relocs will not cause text relocation. */
5546 else if (!h->ref_regular_nonweak
5547 && h->non_got_ref
5548 && h->type != STT_GNU_IFUNC
5549 && !htab->is_vxworks
5550 && !ppc_elf_hash_entry (h)->has_sda_refs
5551 && !readonly_dynrelocs (h))
5552 h->non_got_ref = 0;
5553 }
5554 return TRUE;
5555 }
5556 else
5557 h->plt.plist = NULL;
5558
5559 /* If this is a weak symbol, and there is a real definition, the
5560 processor independent code will have arranged for us to see the
5561 real definition first, and we can just use the same value. */
5562 if (h->u.weakdef != NULL)
5563 {
5564 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
5565 || h->u.weakdef->root.type == bfd_link_hash_defweak);
5566 h->root.u.def.section = h->u.weakdef->root.u.def.section;
5567 h->root.u.def.value = h->u.weakdef->root.u.def.value;
5568 if (ELIMINATE_COPY_RELOCS)
5569 h->non_got_ref = h->u.weakdef->non_got_ref;
5570 return TRUE;
5571 }
5572
5573 /* This is a reference to a symbol defined by a dynamic object which
5574 is not a function. */
5575
5576 /* If we are creating a shared library, we must presume that the
5577 only references to the symbol are via the global offset table.
5578 For such cases we need not do anything here; the relocations will
5579 be handled correctly by relocate_section. */
5580 if (info->shared)
5581 return TRUE;
5582
5583 /* If there are no references to this symbol that do not use the
5584 GOT, we don't need to generate a copy reloc. */
5585 if (!h->non_got_ref)
5586 return TRUE;
5587
5588 /* If -z nocopyreloc was given, we won't generate them either. */
5589 if (info->nocopyreloc)
5590 {
5591 h->non_got_ref = 0;
5592 return TRUE;
5593 }
5594
5595 /* If we didn't find any dynamic relocs in read-only sections, then
5596 we'll be keeping the dynamic relocs and avoiding the copy reloc.
5597 We can't do this if there are any small data relocations. This
5598 doesn't work on VxWorks, where we can not have dynamic
5599 relocations (other than copy and jump slot relocations) in an
5600 executable. */
5601 if (ELIMINATE_COPY_RELOCS
5602 && !ppc_elf_hash_entry (h)->has_sda_refs
5603 && !htab->is_vxworks
5604 && !h->def_regular
5605 && !readonly_dynrelocs (h))
5606 {
5607 h->non_got_ref = 0;
5608 return TRUE;
5609 }
5610
5611 /* Protected variables do not work with .dynbss. The copy in
5612 .dynbss won't be used by the shared library with the protected
5613 definition for the variable. Text relocations are preferable
5614 to an incorrect program. */
5615 if (h->protected_def)
5616 {
5617 h->non_got_ref = 0;
5618 return TRUE;
5619 }
5620
5621 /* We must allocate the symbol in our .dynbss section, which will
5622 become part of the .bss section of the executable. There will be
5623 an entry for this symbol in the .dynsym section. The dynamic
5624 object will contain position independent code, so all references
5625 from the dynamic object to this symbol will go through the global
5626 offset table. The dynamic linker will use the .dynsym entry to
5627 determine the address it must put in the global offset table, so
5628 both the dynamic object and the regular object will refer to the
5629 same memory location for the variable.
5630
5631 Of course, if the symbol is referenced using SDAREL relocs, we
5632 must instead allocate it in .sbss. */
5633
5634 if (ppc_elf_hash_entry (h)->has_sda_refs)
5635 s = htab->dynsbss;
5636 else
5637 s = htab->dynbss;
5638 BFD_ASSERT (s != NULL);
5639
5640 /* We must generate a R_PPC_COPY reloc to tell the dynamic linker to
5641 copy the initial value out of the dynamic object and into the
5642 runtime process image. We need to remember the offset into the
5643 .rela.bss section we are going to use. */
5644 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
5645 {
5646 asection *srel;
5647
5648 if (ppc_elf_hash_entry (h)->has_sda_refs)
5649 srel = htab->relsbss;
5650 else
5651 srel = htab->relbss;
5652 BFD_ASSERT (srel != NULL);
5653 srel->size += sizeof (Elf32_External_Rela);
5654 h->needs_copy = 1;
5655 }
5656
5657 return _bfd_elf_adjust_dynamic_copy (info, h, s);
5658 }
5659 \f
5660 /* Generate a symbol to mark plt call stubs. For non-PIC code the sym is
5661 xxxxxxxx.plt_call32.<callee> where xxxxxxxx is a hex number, usually 0,
5662 specifying the addend on the plt relocation. For -fpic code, the sym
5663 is xxxxxxxx.plt_pic32.<callee>, and for -fPIC
5664 xxxxxxxx.got2.plt_pic32.<callee>. */
5665
5666 static bfd_boolean
5667 add_stub_sym (struct plt_entry *ent,
5668 struct elf_link_hash_entry *h,
5669 struct bfd_link_info *info)
5670 {
5671 struct elf_link_hash_entry *sh;
5672 size_t len1, len2, len3;
5673 char *name;
5674 const char *stub;
5675 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
5676
5677 if (info->shared)
5678 stub = ".plt_pic32.";
5679 else
5680 stub = ".plt_call32.";
5681
5682 len1 = strlen (h->root.root.string);
5683 len2 = strlen (stub);
5684 len3 = 0;
5685 if (ent->sec)
5686 len3 = strlen (ent->sec->name);
5687 name = bfd_malloc (len1 + len2 + len3 + 9);
5688 if (name == NULL)
5689 return FALSE;
5690 sprintf (name, "%08x", (unsigned) ent->addend & 0xffffffff);
5691 if (ent->sec)
5692 memcpy (name + 8, ent->sec->name, len3);
5693 memcpy (name + 8 + len3, stub, len2);
5694 memcpy (name + 8 + len3 + len2, h->root.root.string, len1 + 1);
5695 sh = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
5696 if (sh == NULL)
5697 return FALSE;
5698 if (sh->root.type == bfd_link_hash_new)
5699 {
5700 sh->root.type = bfd_link_hash_defined;
5701 sh->root.u.def.section = htab->glink;
5702 sh->root.u.def.value = ent->glink_offset;
5703 sh->ref_regular = 1;
5704 sh->def_regular = 1;
5705 sh->ref_regular_nonweak = 1;
5706 sh->forced_local = 1;
5707 sh->non_elf = 0;
5708 sh->root.linker_def = 1;
5709 }
5710 return TRUE;
5711 }
5712
5713 /* Allocate NEED contiguous space in .got, and return the offset.
5714 Handles allocation of the got header when crossing 32k. */
5715
5716 static bfd_vma
5717 allocate_got (struct ppc_elf_link_hash_table *htab, unsigned int need)
5718 {
5719 bfd_vma where;
5720 unsigned int max_before_header;
5721
5722 if (htab->plt_type == PLT_VXWORKS)
5723 {
5724 where = htab->got->size;
5725 htab->got->size += need;
5726 }
5727 else
5728 {
5729 max_before_header = htab->plt_type == PLT_NEW ? 32768 : 32764;
5730 if (need <= htab->got_gap)
5731 {
5732 where = max_before_header - htab->got_gap;
5733 htab->got_gap -= need;
5734 }
5735 else
5736 {
5737 if (htab->got->size + need > max_before_header
5738 && htab->got->size <= max_before_header)
5739 {
5740 htab->got_gap = max_before_header - htab->got->size;
5741 htab->got->size = max_before_header + htab->got_header_size;
5742 }
5743 where = htab->got->size;
5744 htab->got->size += need;
5745 }
5746 }
5747 return where;
5748 }
5749
5750 /* Allocate space in associated reloc sections for dynamic relocs. */
5751
5752 static bfd_boolean
5753 allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
5754 {
5755 struct bfd_link_info *info = inf;
5756 struct ppc_elf_link_hash_entry *eh;
5757 struct ppc_elf_link_hash_table *htab;
5758 struct elf_dyn_relocs *p;
5759
5760 if (h->root.type == bfd_link_hash_indirect)
5761 return TRUE;
5762
5763 htab = ppc_elf_hash_table (info);
5764 if (htab->elf.dynamic_sections_created
5765 || h->type == STT_GNU_IFUNC)
5766 {
5767 struct plt_entry *ent;
5768 bfd_boolean doneone = FALSE;
5769 bfd_vma plt_offset = 0, glink_offset = 0;
5770 bfd_boolean dyn;
5771
5772 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
5773 if (ent->plt.refcount > 0)
5774 {
5775 /* Make sure this symbol is output as a dynamic symbol. */
5776 if (h->dynindx == -1
5777 && !h->forced_local
5778 && !h->def_regular
5779 && htab->elf.dynamic_sections_created)
5780 {
5781 if (! bfd_elf_link_record_dynamic_symbol (info, h))
5782 return FALSE;
5783 }
5784
5785 dyn = htab->elf.dynamic_sections_created;
5786 if (info->shared
5787 || h->type == STT_GNU_IFUNC
5788 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))
5789 {
5790 asection *s = htab->plt;
5791 if (!dyn || h->dynindx == -1)
5792 s = htab->iplt;
5793
5794 if (htab->plt_type == PLT_NEW || !dyn || h->dynindx == -1)
5795 {
5796 if (!doneone)
5797 {
5798 plt_offset = s->size;
5799 s->size += 4;
5800 }
5801 ent->plt.offset = plt_offset;
5802
5803 s = htab->glink;
5804 if (!doneone || info->shared)
5805 {
5806 glink_offset = s->size;
5807 s->size += GLINK_ENTRY_SIZE;
5808 if (h == htab->tls_get_addr
5809 && !htab->params->no_tls_get_addr_opt)
5810 s->size += TLS_GET_ADDR_GLINK_SIZE - GLINK_ENTRY_SIZE;
5811 }
5812 if (!doneone
5813 && !info->shared
5814 && h->def_dynamic
5815 && !h->def_regular)
5816 {
5817 h->root.u.def.section = s;
5818 h->root.u.def.value = glink_offset;
5819 }
5820 ent->glink_offset = glink_offset;
5821
5822 if (htab->params->emit_stub_syms
5823 && !add_stub_sym (ent, h, info))
5824 return FALSE;
5825 }
5826 else
5827 {
5828 if (!doneone)
5829 {
5830 /* If this is the first .plt entry, make room
5831 for the special first entry. */
5832 if (s->size == 0)
5833 s->size += htab->plt_initial_entry_size;
5834
5835 /* The PowerPC PLT is actually composed of two
5836 parts, the first part is 2 words (for a load
5837 and a jump), and then there is a remaining
5838 word available at the end. */
5839 plt_offset = (htab->plt_initial_entry_size
5840 + (htab->plt_slot_size
5841 * ((s->size
5842 - htab->plt_initial_entry_size)
5843 / htab->plt_entry_size)));
5844
5845 /* If this symbol is not defined in a regular
5846 file, and we are not generating a shared
5847 library, then set the symbol to this location
5848 in the .plt. This is to avoid text
5849 relocations, and is required to make
5850 function pointers compare as equal between
5851 the normal executable and the shared library. */
5852 if (! info->shared
5853 && h->def_dynamic
5854 && !h->def_regular)
5855 {
5856 h->root.u.def.section = s;
5857 h->root.u.def.value = plt_offset;
5858 }
5859
5860 /* Make room for this entry. */
5861 s->size += htab->plt_entry_size;
5862 /* After the 8192nd entry, room for two entries
5863 is allocated. */
5864 if (htab->plt_type == PLT_OLD
5865 && (s->size - htab->plt_initial_entry_size)
5866 / htab->plt_entry_size
5867 > PLT_NUM_SINGLE_ENTRIES)
5868 s->size += htab->plt_entry_size;
5869 }
5870 ent->plt.offset = plt_offset;
5871 }
5872
5873 /* We also need to make an entry in the .rela.plt section. */
5874 if (!doneone)
5875 {
5876 if (!htab->elf.dynamic_sections_created
5877 || h->dynindx == -1)
5878 htab->reliplt->size += sizeof (Elf32_External_Rela);
5879 else
5880 {
5881 htab->relplt->size += sizeof (Elf32_External_Rela);
5882
5883 if (htab->plt_type == PLT_VXWORKS)
5884 {
5885 /* Allocate space for the unloaded relocations. */
5886 if (!info->shared
5887 && htab->elf.dynamic_sections_created)
5888 {
5889 if (ent->plt.offset
5890 == (bfd_vma) htab->plt_initial_entry_size)
5891 {
5892 htab->srelplt2->size
5893 += (sizeof (Elf32_External_Rela)
5894 * VXWORKS_PLTRESOLVE_RELOCS);
5895 }
5896
5897 htab->srelplt2->size
5898 += (sizeof (Elf32_External_Rela)
5899 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS);
5900 }
5901
5902 /* Every PLT entry has an associated GOT entry in
5903 .got.plt. */
5904 htab->sgotplt->size += 4;
5905 }
5906 }
5907 doneone = TRUE;
5908 }
5909 }
5910 else
5911 ent->plt.offset = (bfd_vma) -1;
5912 }
5913 else
5914 ent->plt.offset = (bfd_vma) -1;
5915
5916 if (!doneone)
5917 {
5918 h->plt.plist = NULL;
5919 h->needs_plt = 0;
5920 }
5921 }
5922 else
5923 {
5924 h->plt.plist = NULL;
5925 h->needs_plt = 0;
5926 }
5927
5928 eh = (struct ppc_elf_link_hash_entry *) h;
5929 if (eh->elf.got.refcount > 0)
5930 {
5931 bfd_boolean dyn;
5932 unsigned int need;
5933
5934 /* Make sure this symbol is output as a dynamic symbol. */
5935 if (eh->elf.dynindx == -1
5936 && !eh->elf.forced_local
5937 && eh->elf.type != STT_GNU_IFUNC
5938 && htab->elf.dynamic_sections_created)
5939 {
5940 if (!bfd_elf_link_record_dynamic_symbol (info, &eh->elf))
5941 return FALSE;
5942 }
5943
5944 need = 0;
5945 if ((eh->tls_mask & TLS_TLS) != 0)
5946 {
5947 if ((eh->tls_mask & TLS_LD) != 0)
5948 {
5949 if (!eh->elf.def_dynamic)
5950 /* We'll just use htab->tlsld_got.offset. This should
5951 always be the case. It's a little odd if we have
5952 a local dynamic reloc against a non-local symbol. */
5953 htab->tlsld_got.refcount += 1;
5954 else
5955 need += 8;
5956 }
5957 if ((eh->tls_mask & TLS_GD) != 0)
5958 need += 8;
5959 if ((eh->tls_mask & (TLS_TPREL | TLS_TPRELGD)) != 0)
5960 need += 4;
5961 if ((eh->tls_mask & TLS_DTPREL) != 0)
5962 need += 4;
5963 }
5964 else
5965 need += 4;
5966 if (need == 0)
5967 eh->elf.got.offset = (bfd_vma) -1;
5968 else
5969 {
5970 eh->elf.got.offset = allocate_got (htab, need);
5971 dyn = htab->elf.dynamic_sections_created;
5972 if ((info->shared
5973 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, &eh->elf))
5974 && (ELF_ST_VISIBILITY (eh->elf.other) == STV_DEFAULT
5975 || eh->elf.root.type != bfd_link_hash_undefweak))
5976 {
5977 asection *rsec = htab->relgot;
5978
5979 if (eh->elf.type == STT_GNU_IFUNC)
5980 rsec = htab->reliplt;
5981 /* All the entries we allocated need relocs.
5982 Except LD only needs one. */
5983 if ((eh->tls_mask & TLS_LD) != 0
5984 && eh->elf.def_dynamic)
5985 need -= 4;
5986 rsec->size += need * (sizeof (Elf32_External_Rela) / 4);
5987 }
5988 }
5989 }
5990 else
5991 eh->elf.got.offset = (bfd_vma) -1;
5992
5993 if (eh->dyn_relocs == NULL
5994 || !htab->elf.dynamic_sections_created)
5995 return TRUE;
5996
5997 /* In the shared -Bsymbolic case, discard space allocated for
5998 dynamic pc-relative relocs against symbols which turn out to be
5999 defined in regular objects. For the normal shared case, discard
6000 space for relocs that have become local due to symbol visibility
6001 changes. */
6002
6003 if (info->shared)
6004 {
6005 /* Relocs that use pc_count are those that appear on a call insn,
6006 or certain REL relocs (see must_be_dyn_reloc) that can be
6007 generated via assembly. We want calls to protected symbols to
6008 resolve directly to the function rather than going via the plt.
6009 If people want function pointer comparisons to work as expected
6010 then they should avoid writing weird assembly. */
6011 if (SYMBOL_CALLS_LOCAL (info, h))
6012 {
6013 struct elf_dyn_relocs **pp;
6014
6015 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
6016 {
6017 p->count -= p->pc_count;
6018 p->pc_count = 0;
6019 if (p->count == 0)
6020 *pp = p->next;
6021 else
6022 pp = &p->next;
6023 }
6024 }
6025
6026 if (htab->is_vxworks)
6027 {
6028 struct elf_dyn_relocs **pp;
6029
6030 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
6031 {
6032 if (strcmp (p->sec->output_section->name, ".tls_vars") == 0)
6033 *pp = p->next;
6034 else
6035 pp = &p->next;
6036 }
6037 }
6038
6039 /* Discard relocs on undefined symbols that must be local. */
6040 if (eh->dyn_relocs != NULL
6041 && h->root.type == bfd_link_hash_undefined
6042 && (ELF_ST_VISIBILITY (h->other) == STV_HIDDEN
6043 || ELF_ST_VISIBILITY (h->other) == STV_INTERNAL))
6044 eh->dyn_relocs = NULL;
6045
6046 /* Also discard relocs on undefined weak syms with non-default
6047 visibility. */
6048 if (eh->dyn_relocs != NULL
6049 && h->root.type == bfd_link_hash_undefweak)
6050 {
6051 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
6052 eh->dyn_relocs = NULL;
6053
6054 /* Make sure undefined weak symbols are output as a dynamic
6055 symbol in PIEs. */
6056 else if (h->dynindx == -1
6057 && !h->forced_local
6058 && !h->def_regular)
6059 {
6060 if (! bfd_elf_link_record_dynamic_symbol (info, h))
6061 return FALSE;
6062 }
6063 }
6064 }
6065 else if (ELIMINATE_COPY_RELOCS)
6066 {
6067 /* For the non-shared case, discard space for relocs against
6068 symbols which turn out to need copy relocs or are not
6069 dynamic. */
6070
6071 if (!h->non_got_ref
6072 && !h->def_regular)
6073 {
6074 /* Make sure this symbol is output as a dynamic symbol.
6075 Undefined weak syms won't yet be marked as dynamic. */
6076 if (h->dynindx == -1
6077 && !h->forced_local)
6078 {
6079 if (! bfd_elf_link_record_dynamic_symbol (info, h))
6080 return FALSE;
6081 }
6082
6083 /* If that succeeded, we know we'll be keeping all the
6084 relocs. */
6085 if (h->dynindx != -1)
6086 goto keep;
6087 }
6088
6089 eh->dyn_relocs = NULL;
6090
6091 keep: ;
6092 }
6093
6094 /* Finally, allocate space. */
6095 for (p = eh->dyn_relocs; p != NULL; p = p->next)
6096 {
6097 asection *sreloc = elf_section_data (p->sec)->sreloc;
6098 if (eh->elf.type == STT_GNU_IFUNC)
6099 sreloc = htab->reliplt;
6100 sreloc->size += p->count * sizeof (Elf32_External_Rela);
6101 }
6102
6103 return TRUE;
6104 }
6105
6106 /* Set DF_TEXTREL if we find any dynamic relocs that apply to
6107 read-only sections. */
6108
6109 static bfd_boolean
6110 maybe_set_textrel (struct elf_link_hash_entry *h, void *info)
6111 {
6112 if (h->root.type == bfd_link_hash_indirect)
6113 return TRUE;
6114
6115 if (readonly_dynrelocs (h))
6116 {
6117 ((struct bfd_link_info *) info)->flags |= DF_TEXTREL;
6118
6119 /* Not an error, just cut short the traversal. */
6120 return FALSE;
6121 }
6122 return TRUE;
6123 }
6124
6125 static const unsigned char glink_eh_frame_cie[] =
6126 {
6127 0, 0, 0, 16, /* length. */
6128 0, 0, 0, 0, /* id. */
6129 1, /* CIE version. */
6130 'z', 'R', 0, /* Augmentation string. */
6131 4, /* Code alignment. */
6132 0x7c, /* Data alignment. */
6133 65, /* RA reg. */
6134 1, /* Augmentation size. */
6135 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding. */
6136 DW_CFA_def_cfa, 1, 0 /* def_cfa: r1 offset 0. */
6137 };
6138
6139 /* Set the sizes of the dynamic sections. */
6140
6141 static bfd_boolean
6142 ppc_elf_size_dynamic_sections (bfd *output_bfd,
6143 struct bfd_link_info *info)
6144 {
6145 struct ppc_elf_link_hash_table *htab;
6146 asection *s;
6147 bfd_boolean relocs;
6148 bfd *ibfd;
6149
6150 #ifdef DEBUG
6151 fprintf (stderr, "ppc_elf_size_dynamic_sections called\n");
6152 #endif
6153
6154 htab = ppc_elf_hash_table (info);
6155 BFD_ASSERT (htab->elf.dynobj != NULL);
6156
6157 if (elf_hash_table (info)->dynamic_sections_created)
6158 {
6159 /* Set the contents of the .interp section to the interpreter. */
6160 if (info->executable)
6161 {
6162 s = bfd_get_linker_section (htab->elf.dynobj, ".interp");
6163 BFD_ASSERT (s != NULL);
6164 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
6165 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
6166 }
6167 }
6168
6169 if (htab->plt_type == PLT_OLD)
6170 htab->got_header_size = 16;
6171 else if (htab->plt_type == PLT_NEW)
6172 htab->got_header_size = 12;
6173
6174 /* Set up .got offsets for local syms, and space for local dynamic
6175 relocs. */
6176 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
6177 {
6178 bfd_signed_vma *local_got;
6179 bfd_signed_vma *end_local_got;
6180 struct plt_entry **local_plt;
6181 struct plt_entry **end_local_plt;
6182 char *lgot_masks;
6183 bfd_size_type locsymcount;
6184 Elf_Internal_Shdr *symtab_hdr;
6185
6186 if (!is_ppc_elf (ibfd))
6187 continue;
6188
6189 for (s = ibfd->sections; s != NULL; s = s->next)
6190 {
6191 struct ppc_dyn_relocs *p;
6192
6193 for (p = ((struct ppc_dyn_relocs *)
6194 elf_section_data (s)->local_dynrel);
6195 p != NULL;
6196 p = p->next)
6197 {
6198 if (!bfd_is_abs_section (p->sec)
6199 && bfd_is_abs_section (p->sec->output_section))
6200 {
6201 /* Input section has been discarded, either because
6202 it is a copy of a linkonce section or due to
6203 linker script /DISCARD/, so we'll be discarding
6204 the relocs too. */
6205 }
6206 else if (htab->is_vxworks
6207 && strcmp (p->sec->output_section->name,
6208 ".tls_vars") == 0)
6209 {
6210 /* Relocations in vxworks .tls_vars sections are
6211 handled specially by the loader. */
6212 }
6213 else if (p->count != 0)
6214 {
6215 asection *sreloc = elf_section_data (p->sec)->sreloc;
6216 if (p->ifunc)
6217 sreloc = htab->reliplt;
6218 sreloc->size += p->count * sizeof (Elf32_External_Rela);
6219 if ((p->sec->output_section->flags
6220 & (SEC_READONLY | SEC_ALLOC))
6221 == (SEC_READONLY | SEC_ALLOC))
6222 info->flags |= DF_TEXTREL;
6223 }
6224 }
6225 }
6226
6227 local_got = elf_local_got_refcounts (ibfd);
6228 if (!local_got)
6229 continue;
6230
6231 symtab_hdr = &elf_symtab_hdr (ibfd);
6232 locsymcount = symtab_hdr->sh_info;
6233 end_local_got = local_got + locsymcount;
6234 local_plt = (struct plt_entry **) end_local_got;
6235 end_local_plt = local_plt + locsymcount;
6236 lgot_masks = (char *) end_local_plt;
6237
6238 for (; local_got < end_local_got; ++local_got, ++lgot_masks)
6239 if (*local_got > 0)
6240 {
6241 unsigned int need = 0;
6242 if ((*lgot_masks & TLS_TLS) != 0)
6243 {
6244 if ((*lgot_masks & TLS_GD) != 0)
6245 need += 8;
6246 if ((*lgot_masks & TLS_LD) != 0)
6247 htab->tlsld_got.refcount += 1;
6248 if ((*lgot_masks & (TLS_TPREL | TLS_TPRELGD)) != 0)
6249 need += 4;
6250 if ((*lgot_masks & TLS_DTPREL) != 0)
6251 need += 4;
6252 }
6253 else
6254 need += 4;
6255 if (need == 0)
6256 *local_got = (bfd_vma) -1;
6257 else
6258 {
6259 *local_got = allocate_got (htab, need);
6260 if (info->shared)
6261 {
6262 asection *srel = htab->relgot;
6263 if ((*lgot_masks & PLT_IFUNC) != 0)
6264 srel = htab->reliplt;
6265 srel->size += need * (sizeof (Elf32_External_Rela) / 4);
6266 }
6267 }
6268 }
6269 else
6270 *local_got = (bfd_vma) -1;
6271
6272 if (htab->is_vxworks)
6273 continue;
6274
6275 /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */
6276 for (; local_plt < end_local_plt; ++local_plt)
6277 {
6278 struct plt_entry *ent;
6279 bfd_boolean doneone = FALSE;
6280 bfd_vma plt_offset = 0, glink_offset = 0;
6281
6282 for (ent = *local_plt; ent != NULL; ent = ent->next)
6283 if (ent->plt.refcount > 0)
6284 {
6285 s = htab->iplt;
6286
6287 if (!doneone)
6288 {
6289 plt_offset = s->size;
6290 s->size += 4;
6291 }
6292 ent->plt.offset = plt_offset;
6293
6294 s = htab->glink;
6295 if (!doneone || info->shared)
6296 {
6297 glink_offset = s->size;
6298 s->size += GLINK_ENTRY_SIZE;
6299 }
6300 ent->glink_offset = glink_offset;
6301
6302 if (!doneone)
6303 {
6304 htab->reliplt->size += sizeof (Elf32_External_Rela);
6305 doneone = TRUE;
6306 }
6307 }
6308 else
6309 ent->plt.offset = (bfd_vma) -1;
6310 }
6311 }
6312
6313 /* Allocate space for global sym dynamic relocs. */
6314 elf_link_hash_traverse (elf_hash_table (info), allocate_dynrelocs, info);
6315
6316 if (htab->tlsld_got.refcount > 0)
6317 {
6318 htab->tlsld_got.offset = allocate_got (htab, 8);
6319 if (info->shared)
6320 htab->relgot->size += sizeof (Elf32_External_Rela);
6321 }
6322 else
6323 htab->tlsld_got.offset = (bfd_vma) -1;
6324
6325 if (htab->got != NULL && htab->plt_type != PLT_VXWORKS)
6326 {
6327 unsigned int g_o_t = 32768;
6328
6329 /* If we haven't allocated the header, do so now. When we get here,
6330 for old plt/got the got size will be 0 to 32764 (not allocated),
6331 or 32780 to 65536 (header allocated). For new plt/got, the
6332 corresponding ranges are 0 to 32768 and 32780 to 65536. */
6333 if (htab->got->size <= 32768)
6334 {
6335 g_o_t = htab->got->size;
6336 if (htab->plt_type == PLT_OLD)
6337 g_o_t += 4;
6338 htab->got->size += htab->got_header_size;
6339 }
6340
6341 htab->elf.hgot->root.u.def.value = g_o_t;
6342 }
6343 if (info->shared)
6344 {
6345 struct elf_link_hash_entry *sda = htab->sdata[0].sym;
6346
6347 sda->root.u.def.section = htab->elf.hgot->root.u.def.section;
6348 sda->root.u.def.value = htab->elf.hgot->root.u.def.value;
6349 }
6350 if (info->emitrelocations)
6351 {
6352 struct elf_link_hash_entry *sda = htab->sdata[0].sym;
6353
6354 if (sda != NULL && sda->ref_regular)
6355 sda->root.u.def.section->flags |= SEC_KEEP;
6356 sda = htab->sdata[1].sym;
6357 if (sda != NULL && sda->ref_regular)
6358 sda->root.u.def.section->flags |= SEC_KEEP;
6359 }
6360
6361 if (htab->glink != NULL
6362 && htab->glink->size != 0
6363 && htab->elf.dynamic_sections_created)
6364 {
6365 htab->glink_pltresolve = htab->glink->size;
6366 /* Space for the branch table. */
6367 htab->glink->size += htab->glink->size / (GLINK_ENTRY_SIZE / 4) - 4;
6368 /* Pad out to align the start of PLTresolve. */
6369 htab->glink->size += -htab->glink->size & (htab->params->ppc476_workaround
6370 ? 63 : 15);
6371 htab->glink->size += GLINK_PLTRESOLVE;
6372
6373 if (htab->params->emit_stub_syms)
6374 {
6375 struct elf_link_hash_entry *sh;
6376 sh = elf_link_hash_lookup (&htab->elf, "__glink",
6377 TRUE, FALSE, FALSE);
6378 if (sh == NULL)
6379 return FALSE;
6380 if (sh->root.type == bfd_link_hash_new)
6381 {
6382 sh->root.type = bfd_link_hash_defined;
6383 sh->root.u.def.section = htab->glink;
6384 sh->root.u.def.value = htab->glink_pltresolve;
6385 sh->ref_regular = 1;
6386 sh->def_regular = 1;
6387 sh->ref_regular_nonweak = 1;
6388 sh->forced_local = 1;
6389 sh->non_elf = 0;
6390 sh->root.linker_def = 1;
6391 }
6392 sh = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve",
6393 TRUE, FALSE, FALSE);
6394 if (sh == NULL)
6395 return FALSE;
6396 if (sh->root.type == bfd_link_hash_new)
6397 {
6398 sh->root.type = bfd_link_hash_defined;
6399 sh->root.u.def.section = htab->glink;
6400 sh->root.u.def.value = htab->glink->size - GLINK_PLTRESOLVE;
6401 sh->ref_regular = 1;
6402 sh->def_regular = 1;
6403 sh->ref_regular_nonweak = 1;
6404 sh->forced_local = 1;
6405 sh->non_elf = 0;
6406 sh->root.linker_def = 1;
6407 }
6408 }
6409 }
6410
6411 if (htab->glink != NULL
6412 && htab->glink->size != 0
6413 && htab->glink_eh_frame != NULL
6414 && !bfd_is_abs_section (htab->glink_eh_frame->output_section)
6415 && _bfd_elf_eh_frame_present (info))
6416 {
6417 s = htab->glink_eh_frame;
6418 s->size = sizeof (glink_eh_frame_cie) + 20;
6419 if (info->shared)
6420 {
6421 s->size += 4;
6422 if (htab->glink->size - GLINK_PLTRESOLVE + 8 >= 256)
6423 s->size += 4;
6424 }
6425 }
6426
6427 /* We've now determined the sizes of the various dynamic sections.
6428 Allocate memory for them. */
6429 relocs = FALSE;
6430 for (s = htab->elf.dynobj->sections; s != NULL; s = s->next)
6431 {
6432 bfd_boolean strip_section = TRUE;
6433
6434 if ((s->flags & SEC_LINKER_CREATED) == 0)
6435 continue;
6436
6437 if (s == htab->plt
6438 || s == htab->got)
6439 {
6440 /* We'd like to strip these sections if they aren't needed, but if
6441 we've exported dynamic symbols from them we must leave them.
6442 It's too late to tell BFD to get rid of the symbols. */
6443 if (htab->elf.hplt != NULL)
6444 strip_section = FALSE;
6445 /* Strip this section if we don't need it; see the
6446 comment below. */
6447 }
6448 else if (s == htab->iplt
6449 || s == htab->glink
6450 || s == htab->glink_eh_frame
6451 || s == htab->sgotplt
6452 || s == htab->sbss
6453 || s == htab->dynbss
6454 || s == htab->dynsbss)
6455 {
6456 /* Strip these too. */
6457 }
6458 else if (s == htab->sdata[0].section
6459 || s == htab->sdata[1].section)
6460 {
6461 strip_section = (s->flags & SEC_KEEP) == 0;
6462 }
6463 else if (CONST_STRNEQ (bfd_get_section_name (htab->elf.dynobj, s),
6464 ".rela"))
6465 {
6466 if (s->size != 0)
6467 {
6468 /* Remember whether there are any relocation sections. */
6469 relocs = TRUE;
6470
6471 /* We use the reloc_count field as a counter if we need
6472 to copy relocs into the output file. */
6473 s->reloc_count = 0;
6474 }
6475 }
6476 else
6477 {
6478 /* It's not one of our sections, so don't allocate space. */
6479 continue;
6480 }
6481
6482 if (s->size == 0 && strip_section)
6483 {
6484 /* If we don't need this section, strip it from the
6485 output file. This is mostly to handle .rela.bss and
6486 .rela.plt. We must create both sections in
6487 create_dynamic_sections, because they must be created
6488 before the linker maps input sections to output
6489 sections. The linker does that before
6490 adjust_dynamic_symbol is called, and it is that
6491 function which decides whether anything needs to go
6492 into these sections. */
6493 s->flags |= SEC_EXCLUDE;
6494 continue;
6495 }
6496
6497 if ((s->flags & SEC_HAS_CONTENTS) == 0)
6498 continue;
6499
6500 /* Allocate memory for the section contents. */
6501 s->contents = bfd_zalloc (htab->elf.dynobj, s->size);
6502 if (s->contents == NULL)
6503 return FALSE;
6504 }
6505
6506 if (htab->elf.dynamic_sections_created)
6507 {
6508 /* Add some entries to the .dynamic section. We fill in the
6509 values later, in ppc_elf_finish_dynamic_sections, but we
6510 must add the entries now so that we get the correct size for
6511 the .dynamic section. The DT_DEBUG entry is filled in by the
6512 dynamic linker and used by the debugger. */
6513 #define add_dynamic_entry(TAG, VAL) \
6514 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
6515
6516 if (info->executable)
6517 {
6518 if (!add_dynamic_entry (DT_DEBUG, 0))
6519 return FALSE;
6520 }
6521
6522 if (htab->plt != NULL && htab->plt->size != 0)
6523 {
6524 if (!add_dynamic_entry (DT_PLTGOT, 0)
6525 || !add_dynamic_entry (DT_PLTRELSZ, 0)
6526 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
6527 || !add_dynamic_entry (DT_JMPREL, 0))
6528 return FALSE;
6529 }
6530
6531 if (htab->plt_type == PLT_NEW
6532 && htab->glink != NULL
6533 && htab->glink->size != 0)
6534 {
6535 if (!add_dynamic_entry (DT_PPC_GOT, 0))
6536 return FALSE;
6537 if (!htab->params->no_tls_get_addr_opt
6538 && htab->tls_get_addr != NULL
6539 && htab->tls_get_addr->plt.plist != NULL
6540 && !add_dynamic_entry (DT_PPC_OPT, PPC_OPT_TLS))
6541 return FALSE;
6542 }
6543
6544 if (relocs)
6545 {
6546 if (!add_dynamic_entry (DT_RELA, 0)
6547 || !add_dynamic_entry (DT_RELASZ, 0)
6548 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
6549 return FALSE;
6550 }
6551
6552 /* If any dynamic relocs apply to a read-only section, then we
6553 need a DT_TEXTREL entry. */
6554 if ((info->flags & DF_TEXTREL) == 0)
6555 elf_link_hash_traverse (elf_hash_table (info), maybe_set_textrel,
6556 info);
6557
6558 if ((info->flags & DF_TEXTREL) != 0)
6559 {
6560 if (!add_dynamic_entry (DT_TEXTREL, 0))
6561 return FALSE;
6562 }
6563 if (htab->is_vxworks
6564 && !elf_vxworks_add_dynamic_entries (output_bfd, info))
6565 return FALSE;
6566 }
6567 #undef add_dynamic_entry
6568
6569 if (htab->glink_eh_frame != NULL
6570 && htab->glink_eh_frame->contents != NULL)
6571 {
6572 unsigned char *p = htab->glink_eh_frame->contents;
6573 bfd_vma val;
6574
6575 memcpy (p, glink_eh_frame_cie, sizeof (glink_eh_frame_cie));
6576 /* CIE length (rewrite in case little-endian). */
6577 bfd_put_32 (htab->elf.dynobj, sizeof (glink_eh_frame_cie) - 4, p);
6578 p += sizeof (glink_eh_frame_cie);
6579 /* FDE length. */
6580 val = htab->glink_eh_frame->size - 4 - sizeof (glink_eh_frame_cie);
6581 bfd_put_32 (htab->elf.dynobj, val, p);
6582 p += 4;
6583 /* CIE pointer. */
6584 val = p - htab->glink_eh_frame->contents;
6585 bfd_put_32 (htab->elf.dynobj, val, p);
6586 p += 4;
6587 /* Offset to .glink. Set later. */
6588 p += 4;
6589 /* .glink size. */
6590 bfd_put_32 (htab->elf.dynobj, htab->glink->size, p);
6591 p += 4;
6592 /* Augmentation. */
6593 p += 1;
6594
6595 if (info->shared
6596 && htab->elf.dynamic_sections_created)
6597 {
6598 bfd_vma adv = (htab->glink->size - GLINK_PLTRESOLVE + 8) >> 2;
6599 if (adv < 64)
6600 *p++ = DW_CFA_advance_loc + adv;
6601 else if (adv < 256)
6602 {
6603 *p++ = DW_CFA_advance_loc1;
6604 *p++ = adv;
6605 }
6606 else if (adv < 65536)
6607 {
6608 *p++ = DW_CFA_advance_loc2;
6609 bfd_put_16 (htab->elf.dynobj, adv, p);
6610 p += 2;
6611 }
6612 else
6613 {
6614 *p++ = DW_CFA_advance_loc4;
6615 bfd_put_32 (htab->elf.dynobj, adv, p);
6616 p += 4;
6617 }
6618 *p++ = DW_CFA_register;
6619 *p++ = 65;
6620 p++;
6621 *p++ = DW_CFA_advance_loc + 4;
6622 *p++ = DW_CFA_restore_extended;
6623 *p++ = 65;
6624 }
6625 BFD_ASSERT ((bfd_vma) ((p + 3 - htab->glink_eh_frame->contents) & -4)
6626 == htab->glink_eh_frame->size);
6627 }
6628
6629 return TRUE;
6630 }
6631
6632 /* Arrange to have _SDA_BASE_ or _SDA2_BASE_ stripped from the output
6633 if it looks like nothing is using them. */
6634
6635 static void
6636 maybe_strip_sdasym (bfd *output_bfd, elf_linker_section_t *lsect)
6637 {
6638 struct elf_link_hash_entry *sda = lsect->sym;
6639
6640 if (sda != NULL && !sda->ref_regular && sda->dynindx == -1)
6641 {
6642 asection *s;
6643
6644 s = bfd_get_section_by_name (output_bfd, lsect->name);
6645 if (s == NULL || bfd_section_removed_from_list (output_bfd, s))
6646 {
6647 s = bfd_get_section_by_name (output_bfd, lsect->bss_name);
6648 if (s == NULL || bfd_section_removed_from_list (output_bfd, s))
6649 {
6650 sda->def_regular = 0;
6651 /* This is somewhat magic. See elf_link_output_extsym. */
6652 sda->ref_dynamic = 1;
6653 sda->forced_local = 0;
6654 }
6655 }
6656 }
6657 }
6658
6659 void
6660 ppc_elf_maybe_strip_sdata_syms (struct bfd_link_info *info)
6661 {
6662 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
6663
6664 if (htab != NULL)
6665 {
6666 maybe_strip_sdasym (info->output_bfd, &htab->sdata[0]);
6667 maybe_strip_sdasym (info->output_bfd, &htab->sdata[1]);
6668 }
6669 }
6670
6671
6672 /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
6673
6674 static bfd_boolean
6675 ppc_elf_hash_symbol (struct elf_link_hash_entry *h)
6676 {
6677 if (h->plt.plist != NULL
6678 && !h->def_regular
6679 && (!h->pointer_equality_needed
6680 || !h->ref_regular_nonweak))
6681 return FALSE;
6682
6683 return _bfd_elf_hash_symbol (h);
6684 }
6685 \f
6686 #define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0]))
6687
6688 /* Relaxation trampolines. r12 is available for clobbering (r11, is
6689 used for some functions that are allowed to break the ABI). */
6690 static const int shared_stub_entry[] =
6691 {
6692 0x7c0802a6, /* mflr 0 */
6693 0x429f0005, /* bcl 20, 31, .Lxxx */
6694 0x7d8802a6, /* mflr 12 */
6695 0x3d8c0000, /* addis 12, 12, (xxx-.Lxxx)@ha */
6696 0x398c0000, /* addi 12, 12, (xxx-.Lxxx)@l */
6697 0x7c0803a6, /* mtlr 0 */
6698 0x7d8903a6, /* mtctr 12 */
6699 0x4e800420, /* bctr */
6700 };
6701
6702 static const int stub_entry[] =
6703 {
6704 0x3d800000, /* lis 12,xxx@ha */
6705 0x398c0000, /* addi 12,12,xxx@l */
6706 0x7d8903a6, /* mtctr 12 */
6707 0x4e800420, /* bctr */
6708 };
6709
6710 struct ppc_elf_relax_info
6711 {
6712 unsigned int workaround_size;
6713 };
6714
6715 /* This function implements long branch trampolines, and the ppc476
6716 icache bug workaround. Any section needing trampolines or patch
6717 space for the workaround has its size extended so that we can
6718 add trampolines at the end of the section. */
6719
6720 static bfd_boolean
6721 ppc_elf_relax_section (bfd *abfd,
6722 asection *isec,
6723 struct bfd_link_info *link_info,
6724 bfd_boolean *again)
6725 {
6726 struct one_fixup
6727 {
6728 struct one_fixup *next;
6729 asection *tsec;
6730 /* Final link, can use the symbol offset. For a
6731 relocatable link we use the symbol's index. */
6732 bfd_vma toff;
6733 bfd_vma trampoff;
6734 };
6735
6736 Elf_Internal_Shdr *symtab_hdr;
6737 bfd_byte *contents = NULL;
6738 Elf_Internal_Sym *isymbuf = NULL;
6739 Elf_Internal_Rela *internal_relocs = NULL;
6740 Elf_Internal_Rela *irel, *irelend = NULL;
6741 struct one_fixup *fixups = NULL;
6742 struct ppc_elf_relax_info *relax_info = NULL;
6743 unsigned changes = 0;
6744 bfd_boolean workaround_change;
6745 struct ppc_elf_link_hash_table *htab;
6746 bfd_size_type trampbase, trampoff, newsize;
6747 asection *got2;
6748 bfd_boolean maybe_pasted;
6749
6750 *again = FALSE;
6751
6752 /* No need to do anything with non-alloc or non-code sections. */
6753 if ((isec->flags & SEC_ALLOC) == 0
6754 || (isec->flags & SEC_CODE) == 0
6755 || (isec->flags & SEC_LINKER_CREATED) != 0
6756 || isec->size < 4)
6757 return TRUE;
6758
6759 /* We cannot represent the required PIC relocs in the output, so don't
6760 do anything. The linker doesn't support mixing -shared and -r
6761 anyway. */
6762 if (link_info->relocatable && link_info->shared)
6763 return TRUE;
6764
6765 htab = ppc_elf_hash_table (link_info);
6766 if (htab == NULL)
6767 return TRUE;
6768
6769 isec->size = (isec->size + 3) & -4;
6770 if (isec->rawsize == 0)
6771 isec->rawsize = isec->size;
6772 trampbase = isec->size;
6773
6774 BFD_ASSERT (isec->sec_info_type == SEC_INFO_TYPE_NONE
6775 || isec->sec_info_type == SEC_INFO_TYPE_TARGET);
6776 isec->sec_info_type = SEC_INFO_TYPE_TARGET;
6777
6778 if (htab->params->ppc476_workaround)
6779 {
6780 if (elf_section_data (isec)->sec_info == NULL)
6781 {
6782 elf_section_data (isec)->sec_info
6783 = bfd_zalloc (abfd, sizeof (struct ppc_elf_relax_info));
6784 if (elf_section_data (isec)->sec_info == NULL)
6785 return FALSE;
6786 }
6787 relax_info = elf_section_data (isec)->sec_info;
6788 trampbase -= relax_info->workaround_size;
6789 }
6790
6791 maybe_pasted = (strcmp (isec->output_section->name, ".init") == 0
6792 || strcmp (isec->output_section->name, ".fini") == 0);
6793 /* Space for a branch around any trampolines. */
6794 trampoff = trampbase;
6795 if (maybe_pasted && trampbase == isec->rawsize)
6796 trampoff += 4;
6797
6798 symtab_hdr = &elf_symtab_hdr (abfd);
6799
6800 if (htab->params->branch_trampolines)
6801 {
6802 /* Get a copy of the native relocations. */
6803 if (isec->reloc_count != 0)
6804 {
6805 internal_relocs = _bfd_elf_link_read_relocs (abfd, isec, NULL, NULL,
6806 link_info->keep_memory);
6807 if (internal_relocs == NULL)
6808 goto error_return;
6809 }
6810
6811 got2 = bfd_get_section_by_name (abfd, ".got2");
6812
6813 irelend = internal_relocs + isec->reloc_count;
6814 for (irel = internal_relocs; irel < irelend; irel++)
6815 {
6816 unsigned long r_type = ELF32_R_TYPE (irel->r_info);
6817 bfd_vma toff, roff;
6818 asection *tsec;
6819 struct one_fixup *f;
6820 size_t insn_offset = 0;
6821 bfd_vma max_branch_offset, val;
6822 bfd_byte *hit_addr;
6823 unsigned long t0;
6824 struct elf_link_hash_entry *h;
6825 struct plt_entry **plist;
6826 unsigned char sym_type;
6827
6828 switch (r_type)
6829 {
6830 case R_PPC_REL24:
6831 case R_PPC_LOCAL24PC:
6832 case R_PPC_PLTREL24:
6833 max_branch_offset = 1 << 25;
6834 break;
6835
6836 case R_PPC_REL14:
6837 case R_PPC_REL14_BRTAKEN:
6838 case R_PPC_REL14_BRNTAKEN:
6839 max_branch_offset = 1 << 15;
6840 break;
6841
6842 default:
6843 continue;
6844 }
6845
6846 /* Get the value of the symbol referred to by the reloc. */
6847 h = NULL;
6848 if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
6849 {
6850 /* A local symbol. */
6851 Elf_Internal_Sym *isym;
6852
6853 /* Read this BFD's local symbols. */
6854 if (isymbuf == NULL)
6855 {
6856 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
6857 if (isymbuf == NULL)
6858 isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
6859 symtab_hdr->sh_info, 0,
6860 NULL, NULL, NULL);
6861 if (isymbuf == 0)
6862 goto error_return;
6863 }
6864 isym = isymbuf + ELF32_R_SYM (irel->r_info);
6865 if (isym->st_shndx == SHN_UNDEF)
6866 tsec = bfd_und_section_ptr;
6867 else if (isym->st_shndx == SHN_ABS)
6868 tsec = bfd_abs_section_ptr;
6869 else if (isym->st_shndx == SHN_COMMON)
6870 tsec = bfd_com_section_ptr;
6871 else
6872 tsec = bfd_section_from_elf_index (abfd, isym->st_shndx);
6873
6874 toff = isym->st_value;
6875 sym_type = ELF_ST_TYPE (isym->st_info);
6876 }
6877 else
6878 {
6879 /* Global symbol handling. */
6880 unsigned long indx;
6881
6882 indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
6883 h = elf_sym_hashes (abfd)[indx];
6884
6885 while (h->root.type == bfd_link_hash_indirect
6886 || h->root.type == bfd_link_hash_warning)
6887 h = (struct elf_link_hash_entry *) h->root.u.i.link;
6888
6889 if (h->root.type == bfd_link_hash_defined
6890 || h->root.type == bfd_link_hash_defweak)
6891 {
6892 tsec = h->root.u.def.section;
6893 toff = h->root.u.def.value;
6894 }
6895 else if (h->root.type == bfd_link_hash_undefined
6896 || h->root.type == bfd_link_hash_undefweak)
6897 {
6898 tsec = bfd_und_section_ptr;
6899 toff = link_info->relocatable ? indx : 0;
6900 }
6901 else
6902 continue;
6903
6904 /* If this branch is to __tls_get_addr then we may later
6905 optimise away the call. We won't be needing a long-
6906 branch stub in that case. */
6907 if (link_info->executable
6908 && !link_info->relocatable
6909 && h == htab->tls_get_addr
6910 && irel != internal_relocs)
6911 {
6912 unsigned long t_symndx = ELF32_R_SYM (irel[-1].r_info);
6913 unsigned long t_rtype = ELF32_R_TYPE (irel[-1].r_info);
6914 unsigned int tls_mask = 0;
6915
6916 /* The previous reloc should be one of R_PPC_TLSGD or
6917 R_PPC_TLSLD, or for older object files, a reloc
6918 on the __tls_get_addr arg setup insn. Get tls
6919 mask bits from the symbol on that reloc. */
6920 if (t_symndx < symtab_hdr->sh_info)
6921 {
6922 bfd_vma *local_got_offsets = elf_local_got_offsets (abfd);
6923
6924 if (local_got_offsets != NULL)
6925 {
6926 struct plt_entry **local_plt = (struct plt_entry **)
6927 (local_got_offsets + symtab_hdr->sh_info);
6928 char *lgot_masks = (char *)
6929 (local_plt + symtab_hdr->sh_info);
6930 tls_mask = lgot_masks[t_symndx];
6931 }
6932 }
6933 else
6934 {
6935 struct elf_link_hash_entry *th
6936 = elf_sym_hashes (abfd)[t_symndx - symtab_hdr->sh_info];
6937
6938 while (th->root.type == bfd_link_hash_indirect
6939 || th->root.type == bfd_link_hash_warning)
6940 th = (struct elf_link_hash_entry *) th->root.u.i.link;
6941
6942 tls_mask
6943 = ((struct ppc_elf_link_hash_entry *) th)->tls_mask;
6944 }
6945
6946 /* The mask bits tell us if the call will be
6947 optimised away. */
6948 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0
6949 && (t_rtype == R_PPC_TLSGD
6950 || t_rtype == R_PPC_GOT_TLSGD16
6951 || t_rtype == R_PPC_GOT_TLSGD16_LO))
6952 continue;
6953 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0
6954 && (t_rtype == R_PPC_TLSLD
6955 || t_rtype == R_PPC_GOT_TLSLD16
6956 || t_rtype == R_PPC_GOT_TLSLD16_LO))
6957 continue;
6958 }
6959
6960 sym_type = h->type;
6961 }
6962
6963 /* The condition here under which we call find_plt_ent must
6964 match that in relocate_section. If we call find_plt_ent here
6965 but not in relocate_section, or vice versa, then the branch
6966 destination used here may be incorrect. */
6967 plist = NULL;
6968 if (h != NULL)
6969 {
6970 /* We know is_branch_reloc (r_type) is true. */
6971 if (h->type == STT_GNU_IFUNC
6972 || r_type == R_PPC_PLTREL24)
6973 plist = &h->plt.plist;
6974 }
6975 else if (sym_type == STT_GNU_IFUNC
6976 && elf_local_got_offsets (abfd) != NULL)
6977 {
6978 bfd_vma *local_got_offsets = elf_local_got_offsets (abfd);
6979 struct plt_entry **local_plt = (struct plt_entry **)
6980 (local_got_offsets + symtab_hdr->sh_info);
6981 plist = local_plt + ELF32_R_SYM (irel->r_info);
6982 }
6983 if (plist != NULL)
6984 {
6985 bfd_vma addend = 0;
6986 struct plt_entry *ent;
6987
6988 if (r_type == R_PPC_PLTREL24 && link_info->shared)
6989 addend = irel->r_addend;
6990 ent = find_plt_ent (plist, got2, addend);
6991 if (ent != NULL)
6992 {
6993 if (htab->plt_type == PLT_NEW
6994 || h == NULL
6995 || !htab->elf.dynamic_sections_created
6996 || h->dynindx == -1)
6997 {
6998 tsec = htab->glink;
6999 toff = ent->glink_offset;
7000 }
7001 else
7002 {
7003 tsec = htab->plt;
7004 toff = ent->plt.offset;
7005 }
7006 }
7007 }
7008
7009 /* If the branch and target are in the same section, you have
7010 no hope of adding stubs. We'll error out later should the
7011 branch overflow. */
7012 if (tsec == isec)
7013 continue;
7014
7015 /* There probably isn't any reason to handle symbols in
7016 SEC_MERGE sections; SEC_MERGE doesn't seem a likely
7017 attribute for a code section, and we are only looking at
7018 branches. However, implement it correctly here as a
7019 reference for other target relax_section functions. */
7020 if (0 && tsec->sec_info_type == SEC_INFO_TYPE_MERGE)
7021 {
7022 /* At this stage in linking, no SEC_MERGE symbol has been
7023 adjusted, so all references to such symbols need to be
7024 passed through _bfd_merged_section_offset. (Later, in
7025 relocate_section, all SEC_MERGE symbols *except* for
7026 section symbols have been adjusted.)
7027
7028 gas may reduce relocations against symbols in SEC_MERGE
7029 sections to a relocation against the section symbol when
7030 the original addend was zero. When the reloc is against
7031 a section symbol we should include the addend in the
7032 offset passed to _bfd_merged_section_offset, since the
7033 location of interest is the original symbol. On the
7034 other hand, an access to "sym+addend" where "sym" is not
7035 a section symbol should not include the addend; Such an
7036 access is presumed to be an offset from "sym"; The
7037 location of interest is just "sym". */
7038 if (sym_type == STT_SECTION)
7039 toff += irel->r_addend;
7040
7041 toff
7042 = _bfd_merged_section_offset (abfd, &tsec,
7043 elf_section_data (tsec)->sec_info,
7044 toff);
7045
7046 if (sym_type != STT_SECTION)
7047 toff += irel->r_addend;
7048 }
7049 /* PLTREL24 addends are special. */
7050 else if (r_type != R_PPC_PLTREL24)
7051 toff += irel->r_addend;
7052
7053 /* Attempted -shared link of non-pic code loses. */
7054 if ((!link_info->relocatable
7055 && tsec == bfd_und_section_ptr)
7056 || tsec->output_section == NULL
7057 || (tsec->owner != NULL
7058 && (tsec->owner->flags & BFD_PLUGIN) != 0))
7059 continue;
7060
7061 roff = irel->r_offset;
7062
7063 /* If the branch is in range, no need to do anything. */
7064 if (tsec != bfd_und_section_ptr
7065 && (!link_info->relocatable
7066 /* A relocatable link may have sections moved during
7067 final link, so do not presume they remain in range. */
7068 || tsec->output_section == isec->output_section))
7069 {
7070 bfd_vma symaddr, reladdr;
7071
7072 symaddr = tsec->output_section->vma + tsec->output_offset + toff;
7073 reladdr = isec->output_section->vma + isec->output_offset + roff;
7074 if (symaddr - reladdr + max_branch_offset
7075 < 2 * max_branch_offset)
7076 continue;
7077 }
7078
7079 /* Look for an existing fixup to this address. */
7080 for (f = fixups; f ; f = f->next)
7081 if (f->tsec == tsec && f->toff == toff)
7082 break;
7083
7084 if (f == NULL)
7085 {
7086 size_t size;
7087 unsigned long stub_rtype;
7088
7089 val = trampoff - roff;
7090 if (val >= max_branch_offset)
7091 /* Oh dear, we can't reach a trampoline. Don't try to add
7092 one. We'll report an error later. */
7093 continue;
7094
7095 if (link_info->shared)
7096 {
7097 size = 4 * ARRAY_SIZE (shared_stub_entry);
7098 insn_offset = 12;
7099 }
7100 else
7101 {
7102 size = 4 * ARRAY_SIZE (stub_entry);
7103 insn_offset = 0;
7104 }
7105 stub_rtype = R_PPC_RELAX;
7106 if (tsec == htab->plt
7107 || tsec == htab->glink)
7108 {
7109 stub_rtype = R_PPC_RELAX_PLT;
7110 if (r_type == R_PPC_PLTREL24)
7111 stub_rtype = R_PPC_RELAX_PLTREL24;
7112 }
7113
7114 /* Hijack the old relocation. Since we need two
7115 relocations for this use a "composite" reloc. */
7116 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
7117 stub_rtype);
7118 irel->r_offset = trampoff + insn_offset;
7119 if (r_type == R_PPC_PLTREL24
7120 && stub_rtype != R_PPC_RELAX_PLTREL24)
7121 irel->r_addend = 0;
7122
7123 /* Record the fixup so we don't do it again this section. */
7124 f = bfd_malloc (sizeof (*f));
7125 f->next = fixups;
7126 f->tsec = tsec;
7127 f->toff = toff;
7128 f->trampoff = trampoff;
7129 fixups = f;
7130
7131 trampoff += size;
7132 changes++;
7133 }
7134 else
7135 {
7136 val = f->trampoff - roff;
7137 if (val >= max_branch_offset)
7138 continue;
7139
7140 /* Nop out the reloc, since we're finalizing things here. */
7141 irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
7142 }
7143
7144 /* Get the section contents. */
7145 if (contents == NULL)
7146 {
7147 /* Get cached copy if it exists. */
7148 if (elf_section_data (isec)->this_hdr.contents != NULL)
7149 contents = elf_section_data (isec)->this_hdr.contents;
7150 /* Go get them off disk. */
7151 else if (!bfd_malloc_and_get_section (abfd, isec, &contents))
7152 goto error_return;
7153 }
7154
7155 /* Fix up the existing branch to hit the trampoline. */
7156 hit_addr = contents + roff;
7157 switch (r_type)
7158 {
7159 case R_PPC_REL24:
7160 case R_PPC_LOCAL24PC:
7161 case R_PPC_PLTREL24:
7162 t0 = bfd_get_32 (abfd, hit_addr);
7163 t0 &= ~0x3fffffc;
7164 t0 |= val & 0x3fffffc;
7165 bfd_put_32 (abfd, t0, hit_addr);
7166 break;
7167
7168 case R_PPC_REL14:
7169 case R_PPC_REL14_BRTAKEN:
7170 case R_PPC_REL14_BRNTAKEN:
7171 t0 = bfd_get_32 (abfd, hit_addr);
7172 t0 &= ~0xfffc;
7173 t0 |= val & 0xfffc;
7174 bfd_put_32 (abfd, t0, hit_addr);
7175 break;
7176 }
7177 }
7178
7179 while (fixups != NULL)
7180 {
7181 struct one_fixup *f = fixups;
7182 fixups = fixups->next;
7183 free (f);
7184 }
7185 }
7186
7187 workaround_change = FALSE;
7188 newsize = trampoff;
7189 if (htab->params->ppc476_workaround
7190 && (!link_info->relocatable
7191 || isec->output_section->alignment_power >= htab->params->pagesize_p2))
7192 {
7193 bfd_vma addr, end_addr;
7194 unsigned int crossings;
7195 bfd_vma pagesize = (bfd_vma) 1 << htab->params->pagesize_p2;
7196
7197 addr = isec->output_section->vma + isec->output_offset;
7198 end_addr = addr + trampoff;
7199 addr &= -pagesize;
7200 crossings = ((end_addr & -pagesize) - addr) >> htab->params->pagesize_p2;
7201 if (crossings != 0)
7202 {
7203 /* Keep space aligned, to ensure the patch code itself does
7204 not cross a page. Don't decrease size calculated on a
7205 previous pass as otherwise we might never settle on a layout. */
7206 newsize = 15 - ((end_addr - 1) & 15);
7207 newsize += crossings * 16;
7208 if (relax_info->workaround_size < newsize)
7209 {
7210 relax_info->workaround_size = newsize;
7211 workaround_change = TRUE;
7212 }
7213 /* Ensure relocate_section is called. */
7214 isec->flags |= SEC_RELOC;
7215 }
7216 newsize = trampoff + relax_info->workaround_size;
7217 }
7218
7219 if (changes || workaround_change)
7220 isec->size = newsize;
7221
7222 if (isymbuf != NULL
7223 && symtab_hdr->contents != (unsigned char *) isymbuf)
7224 {
7225 if (! link_info->keep_memory)
7226 free (isymbuf);
7227 else
7228 {
7229 /* Cache the symbols for elf_link_input_bfd. */
7230 symtab_hdr->contents = (unsigned char *) isymbuf;
7231 }
7232 }
7233
7234 if (contents != NULL
7235 && elf_section_data (isec)->this_hdr.contents != contents)
7236 {
7237 if (!changes && !link_info->keep_memory)
7238 free (contents);
7239 else
7240 {
7241 /* Cache the section contents for elf_link_input_bfd. */
7242 elf_section_data (isec)->this_hdr.contents = contents;
7243 }
7244 }
7245
7246 if (changes != 0)
7247 {
7248 /* Append sufficient NOP relocs so we can write out relocation
7249 information for the trampolines. */
7250 Elf_Internal_Shdr *rel_hdr;
7251 Elf_Internal_Rela *new_relocs = bfd_malloc ((changes + isec->reloc_count)
7252 * sizeof (*new_relocs));
7253 unsigned ix;
7254
7255 if (!new_relocs)
7256 goto error_return;
7257 memcpy (new_relocs, internal_relocs,
7258 isec->reloc_count * sizeof (*new_relocs));
7259 for (ix = changes; ix--;)
7260 {
7261 irel = new_relocs + ix + isec->reloc_count;
7262
7263 irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
7264 }
7265 if (internal_relocs != elf_section_data (isec)->relocs)
7266 free (internal_relocs);
7267 elf_section_data (isec)->relocs = new_relocs;
7268 isec->reloc_count += changes;
7269 rel_hdr = _bfd_elf_single_rel_hdr (isec);
7270 rel_hdr->sh_size += changes * rel_hdr->sh_entsize;
7271 }
7272 else if (internal_relocs != NULL
7273 && elf_section_data (isec)->relocs != internal_relocs)
7274 free (internal_relocs);
7275
7276 *again = changes != 0 || workaround_change;
7277 return TRUE;
7278
7279 error_return:
7280 while (fixups != NULL)
7281 {
7282 struct one_fixup *f = fixups;
7283 fixups = fixups->next;
7284 free (f);
7285 }
7286 if (isymbuf != NULL && (unsigned char *) isymbuf != symtab_hdr->contents)
7287 free (isymbuf);
7288 if (contents != NULL
7289 && elf_section_data (isec)->this_hdr.contents != contents)
7290 free (contents);
7291 if (internal_relocs != NULL
7292 && elf_section_data (isec)->relocs != internal_relocs)
7293 free (internal_relocs);
7294 return FALSE;
7295 }
7296 \f
7297 /* What to do when ld finds relocations against symbols defined in
7298 discarded sections. */
7299
7300 static unsigned int
7301 ppc_elf_action_discarded (asection *sec)
7302 {
7303 if (strcmp (".fixup", sec->name) == 0)
7304 return 0;
7305
7306 if (strcmp (".got2", sec->name) == 0)
7307 return 0;
7308
7309 return _bfd_elf_default_action_discarded (sec);
7310 }
7311 \f
7312 /* Fill in the address for a pointer generated in a linker section. */
7313
7314 static bfd_vma
7315 elf_finish_pointer_linker_section (bfd *input_bfd,
7316 elf_linker_section_t *lsect,
7317 struct elf_link_hash_entry *h,
7318 bfd_vma relocation,
7319 const Elf_Internal_Rela *rel)
7320 {
7321 elf_linker_section_pointers_t *linker_section_ptr;
7322
7323 BFD_ASSERT (lsect != NULL);
7324
7325 if (h != NULL)
7326 {
7327 /* Handle global symbol. */
7328 struct ppc_elf_link_hash_entry *eh;
7329
7330 eh = (struct ppc_elf_link_hash_entry *) h;
7331 BFD_ASSERT (eh->elf.def_regular);
7332 linker_section_ptr = eh->linker_section_pointer;
7333 }
7334 else
7335 {
7336 /* Handle local symbol. */
7337 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
7338
7339 BFD_ASSERT (is_ppc_elf (input_bfd));
7340 BFD_ASSERT (elf_local_ptr_offsets (input_bfd) != NULL);
7341 linker_section_ptr = elf_local_ptr_offsets (input_bfd)[r_symndx];
7342 }
7343
7344 linker_section_ptr = elf_find_pointer_linker_section (linker_section_ptr,
7345 rel->r_addend,
7346 lsect);
7347 BFD_ASSERT (linker_section_ptr != NULL);
7348
7349 /* Offset will always be a multiple of four, so use the bottom bit
7350 as a "written" flag. */
7351 if ((linker_section_ptr->offset & 1) == 0)
7352 {
7353 bfd_put_32 (lsect->section->owner,
7354 relocation + linker_section_ptr->addend,
7355 lsect->section->contents + linker_section_ptr->offset);
7356 linker_section_ptr->offset += 1;
7357 }
7358
7359 relocation = (lsect->section->output_section->vma
7360 + lsect->section->output_offset
7361 + linker_section_ptr->offset - 1
7362 - SYM_VAL (lsect->sym));
7363
7364 #ifdef DEBUG
7365 fprintf (stderr,
7366 "Finish pointer in linker section %s, offset = %ld (0x%lx)\n",
7367 lsect->name, (long) relocation, (long) relocation);
7368 #endif
7369
7370 return relocation;
7371 }
7372
7373 #define PPC_LO(v) ((v) & 0xffff)
7374 #define PPC_HI(v) (((v) >> 16) & 0xffff)
7375 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
7376
7377 static void
7378 write_glink_stub (struct plt_entry *ent, asection *plt_sec, unsigned char *p,
7379 struct bfd_link_info *info)
7380 {
7381 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
7382 bfd *output_bfd = info->output_bfd;
7383 bfd_vma plt;
7384
7385 plt = ((ent->plt.offset & ~1)
7386 + plt_sec->output_section->vma
7387 + plt_sec->output_offset);
7388
7389 if (info->shared)
7390 {
7391 bfd_vma got = 0;
7392
7393 if (ent->addend >= 32768)
7394 got = (ent->addend
7395 + ent->sec->output_section->vma
7396 + ent->sec->output_offset);
7397 else if (htab->elf.hgot != NULL)
7398 got = SYM_VAL (htab->elf.hgot);
7399
7400 plt -= got;
7401
7402 if (plt + 0x8000 < 0x10000)
7403 {
7404 bfd_put_32 (output_bfd, LWZ_11_30 + PPC_LO (plt), p);
7405 p += 4;
7406 bfd_put_32 (output_bfd, MTCTR_11, p);
7407 p += 4;
7408 bfd_put_32 (output_bfd, BCTR, p);
7409 p += 4;
7410 bfd_put_32 (output_bfd, htab->params->ppc476_workaround ? BA : NOP, p);
7411 p += 4;
7412 }
7413 else
7414 {
7415 bfd_put_32 (output_bfd, ADDIS_11_30 + PPC_HA (plt), p);
7416 p += 4;
7417 bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
7418 p += 4;
7419 bfd_put_32 (output_bfd, MTCTR_11, p);
7420 p += 4;
7421 bfd_put_32 (output_bfd, BCTR, p);
7422 p += 4;
7423 }
7424 }
7425 else
7426 {
7427 bfd_put_32 (output_bfd, LIS_11 + PPC_HA (plt), p);
7428 p += 4;
7429 bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
7430 p += 4;
7431 bfd_put_32 (output_bfd, MTCTR_11, p);
7432 p += 4;
7433 bfd_put_32 (output_bfd, BCTR, p);
7434 p += 4;
7435 }
7436 }
7437
7438 /* Return true if symbol is defined statically. */
7439
7440 static bfd_boolean
7441 is_static_defined (struct elf_link_hash_entry *h)
7442 {
7443 return ((h->root.type == bfd_link_hash_defined
7444 || h->root.type == bfd_link_hash_defweak)
7445 && h->root.u.def.section != NULL
7446 && h->root.u.def.section->output_section != NULL);
7447 }
7448
7449 /* If INSN is an opcode that may be used with an @tls operand, return
7450 the transformed insn for TLS optimisation, otherwise return 0. If
7451 REG is non-zero only match an insn with RB or RA equal to REG. */
7452
7453 unsigned int
7454 _bfd_elf_ppc_at_tls_transform (unsigned int insn, unsigned int reg)
7455 {
7456 unsigned int rtra;
7457
7458 if ((insn & (0x3f << 26)) != 31 << 26)
7459 return 0;
7460
7461 if (reg == 0 || ((insn >> 11) & 0x1f) == reg)
7462 rtra = insn & ((1 << 26) - (1 << 16));
7463 else if (((insn >> 16) & 0x1f) == reg)
7464 rtra = (insn & (0x1f << 21)) | ((insn & (0x1f << 11)) << 5);
7465 else
7466 return 0;
7467
7468 if ((insn & (0x3ff << 1)) == 266 << 1)
7469 /* add -> addi. */
7470 insn = 14 << 26;
7471 else if ((insn & (0x1f << 1)) == 23 << 1
7472 && ((insn & (0x1f << 6)) < 14 << 6
7473 || ((insn & (0x1f << 6)) >= 16 << 6
7474 && (insn & (0x1f << 6)) < 24 << 6)))
7475 /* load and store indexed -> dform. */
7476 insn = (32 | ((insn >> 6) & 0x1f)) << 26;
7477 else if ((insn & (((0x1a << 5) | 0x1f) << 1)) == 21 << 1)
7478 /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
7479 insn = ((58 | ((insn >> 6) & 4)) << 26) | ((insn >> 6) & 1);
7480 else if ((insn & (((0x1f << 5) | 0x1f) << 1)) == 341 << 1)
7481 /* lwax -> lwa. */
7482 insn = (58 << 26) | 2;
7483 else
7484 return 0;
7485 insn |= rtra;
7486 return insn;
7487 }
7488
7489 /* If INSN is an opcode that may be used with an @tprel operand, return
7490 the transformed insn for an undefined weak symbol, ie. with the
7491 thread pointer REG operand removed. Otherwise return 0. */
7492
7493 unsigned int
7494 _bfd_elf_ppc_at_tprel_transform (unsigned int insn, unsigned int reg)
7495 {
7496 if ((insn & (0x1f << 16)) == reg << 16
7497 && ((insn & (0x3f << 26)) == 14u << 26 /* addi */
7498 || (insn & (0x3f << 26)) == 15u << 26 /* addis */
7499 || (insn & (0x3f << 26)) == 32u << 26 /* lwz */
7500 || (insn & (0x3f << 26)) == 34u << 26 /* lbz */
7501 || (insn & (0x3f << 26)) == 36u << 26 /* stw */
7502 || (insn & (0x3f << 26)) == 38u << 26 /* stb */
7503 || (insn & (0x3f << 26)) == 40u << 26 /* lhz */
7504 || (insn & (0x3f << 26)) == 42u << 26 /* lha */
7505 || (insn & (0x3f << 26)) == 44u << 26 /* sth */
7506 || (insn & (0x3f << 26)) == 46u << 26 /* lmw */
7507 || (insn & (0x3f << 26)) == 47u << 26 /* stmw */
7508 || (insn & (0x3f << 26)) == 48u << 26 /* lfs */
7509 || (insn & (0x3f << 26)) == 50u << 26 /* lfd */
7510 || (insn & (0x3f << 26)) == 52u << 26 /* stfs */
7511 || (insn & (0x3f << 26)) == 54u << 26 /* stfd */
7512 || ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
7513 && (insn & 3) != 1)
7514 || ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */
7515 && ((insn & 3) == 0 || (insn & 3) == 3))))
7516 {
7517 insn &= ~(0x1f << 16);
7518 }
7519 else if ((insn & (0x1f << 21)) == reg << 21
7520 && ((insn & (0x3e << 26)) == 24u << 26 /* ori, oris */
7521 || (insn & (0x3e << 26)) == 26u << 26 /* xori,xoris */
7522 || (insn & (0x3e << 26)) == 28u << 26 /* andi,andis */))
7523 {
7524 insn &= ~(0x1f << 21);
7525 insn |= (insn & (0x1f << 16)) << 5;
7526 if ((insn & (0x3e << 26)) == 26 << 26 /* xori,xoris */)
7527 insn -= 2 >> 26; /* convert to ori,oris */
7528 }
7529 else
7530 insn = 0;
7531 return insn;
7532 }
7533
7534 static bfd_boolean
7535 is_insn_ds_form (unsigned int insn)
7536 {
7537 return ((insn & (0x3f << 26)) == 58u << 26 /* ld,ldu,lwa */
7538 || (insn & (0x3f << 26)) == 62u << 26 /* std,stdu,stq */
7539 || (insn & (0x3f << 26)) == 57u << 26 /* lfdp */
7540 || (insn & (0x3f << 26)) == 61u << 26 /* stfdp */);
7541 }
7542
7543 static bfd_boolean
7544 is_insn_dq_form (unsigned int insn)
7545 {
7546 return (insn & (0x3f << 26)) == 56u << 26; /* lq */
7547 }
7548
7549 /* The RELOCATE_SECTION function is called by the ELF backend linker
7550 to handle the relocations for a section.
7551
7552 The relocs are always passed as Rela structures; if the section
7553 actually uses Rel structures, the r_addend field will always be
7554 zero.
7555
7556 This function is responsible for adjust the section contents as
7557 necessary, and (if using Rela relocs and generating a
7558 relocatable output file) adjusting the reloc addend as
7559 necessary.
7560
7561 This function does not have to worry about setting the reloc
7562 address or the reloc symbol index.
7563
7564 LOCAL_SYMS is a pointer to the swapped in local symbols.
7565
7566 LOCAL_SECTIONS is an array giving the section in the input file
7567 corresponding to the st_shndx field of each local symbol.
7568
7569 The global hash table entry for the global symbols can be found
7570 via elf_sym_hashes (input_bfd).
7571
7572 When generating relocatable output, this function must handle
7573 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
7574 going to be the section symbol corresponding to the output
7575 section, which means that the addend must be adjusted
7576 accordingly. */
7577
7578 static bfd_boolean
7579 ppc_elf_relocate_section (bfd *output_bfd,
7580 struct bfd_link_info *info,
7581 bfd *input_bfd,
7582 asection *input_section,
7583 bfd_byte *contents,
7584 Elf_Internal_Rela *relocs,
7585 Elf_Internal_Sym *local_syms,
7586 asection **local_sections)
7587 {
7588 Elf_Internal_Shdr *symtab_hdr;
7589 struct elf_link_hash_entry **sym_hashes;
7590 struct ppc_elf_link_hash_table *htab;
7591 Elf_Internal_Rela *rel;
7592 Elf_Internal_Rela *relend;
7593 Elf_Internal_Rela outrel;
7594 asection *got2;
7595 bfd_vma *local_got_offsets;
7596 bfd_boolean ret = TRUE;
7597 bfd_vma d_offset = (bfd_big_endian (output_bfd) ? 2 : 0);
7598 bfd_boolean is_vxworks_tls;
7599
7600 #ifdef DEBUG
7601 _bfd_error_handler ("ppc_elf_relocate_section called for %B section %A, "
7602 "%ld relocations%s",
7603 input_bfd, input_section,
7604 (long) input_section->reloc_count,
7605 (info->relocatable) ? " (relocatable)" : "");
7606 #endif
7607
7608 got2 = bfd_get_section_by_name (input_bfd, ".got2");
7609
7610 /* Initialize howto table if not already done. */
7611 if (!ppc_elf_howto_table[R_PPC_ADDR32])
7612 ppc_elf_howto_init ();
7613
7614 htab = ppc_elf_hash_table (info);
7615 local_got_offsets = elf_local_got_offsets (input_bfd);
7616 symtab_hdr = &elf_symtab_hdr (input_bfd);
7617 sym_hashes = elf_sym_hashes (input_bfd);
7618 /* We have to handle relocations in vxworks .tls_vars sections
7619 specially, because the dynamic loader is 'weird'. */
7620 is_vxworks_tls = (htab->is_vxworks && info->shared
7621 && !strcmp (input_section->output_section->name,
7622 ".tls_vars"));
7623 rel = relocs;
7624 relend = relocs + input_section->reloc_count;
7625 for (; rel < relend; rel++)
7626 {
7627 enum elf_ppc_reloc_type r_type;
7628 bfd_vma addend;
7629 bfd_reloc_status_type r;
7630 Elf_Internal_Sym *sym;
7631 asection *sec;
7632 struct elf_link_hash_entry *h;
7633 const char *sym_name;
7634 reloc_howto_type *howto;
7635 unsigned long r_symndx;
7636 bfd_vma relocation;
7637 bfd_vma branch_bit, from;
7638 bfd_boolean unresolved_reloc;
7639 bfd_boolean warned;
7640 unsigned int tls_type, tls_mask, tls_gd;
7641 struct plt_entry **ifunc;
7642 struct reloc_howto_struct alt_howto;
7643
7644 r_type = ELF32_R_TYPE (rel->r_info);
7645 sym = NULL;
7646 sec = NULL;
7647 h = NULL;
7648 unresolved_reloc = FALSE;
7649 warned = FALSE;
7650 r_symndx = ELF32_R_SYM (rel->r_info);
7651
7652 if (r_symndx < symtab_hdr->sh_info)
7653 {
7654 sym = local_syms + r_symndx;
7655 sec = local_sections[r_symndx];
7656 sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
7657
7658 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
7659 }
7660 else
7661 {
7662 bfd_boolean ignored;
7663
7664 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
7665 r_symndx, symtab_hdr, sym_hashes,
7666 h, sec, relocation,
7667 unresolved_reloc, warned, ignored);
7668
7669 sym_name = h->root.root.string;
7670 }
7671
7672 if (sec != NULL && discarded_section (sec))
7673 {
7674 /* For relocs against symbols from removed linkonce sections,
7675 or sections discarded by a linker script, we just want the
7676 section contents zeroed. Avoid any special processing. */
7677 howto = NULL;
7678 if (r_type < R_PPC_max)
7679 howto = ppc_elf_howto_table[r_type];
7680 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
7681 rel, 1, relend, howto, 0, contents);
7682 }
7683
7684 if (info->relocatable)
7685 {
7686 if (got2 != NULL
7687 && r_type == R_PPC_PLTREL24
7688 && rel->r_addend != 0)
7689 {
7690 /* R_PPC_PLTREL24 is rather special. If non-zero, the
7691 addend specifies the GOT pointer offset within .got2. */
7692 rel->r_addend += got2->output_offset;
7693 }
7694 if (r_type != R_PPC_RELAX_PLT
7695 && r_type != R_PPC_RELAX_PLTREL24
7696 && r_type != R_PPC_RELAX)
7697 continue;
7698 }
7699
7700 /* TLS optimizations. Replace instruction sequences and relocs
7701 based on information we collected in tls_optimize. We edit
7702 RELOCS so that --emit-relocs will output something sensible
7703 for the final instruction stream. */
7704 tls_mask = 0;
7705 tls_gd = 0;
7706 if (h != NULL)
7707 tls_mask = ((struct ppc_elf_link_hash_entry *) h)->tls_mask;
7708 else if (local_got_offsets != NULL)
7709 {
7710 struct plt_entry **local_plt;
7711 char *lgot_masks;
7712 local_plt
7713 = (struct plt_entry **) (local_got_offsets + symtab_hdr->sh_info);
7714 lgot_masks = (char *) (local_plt + symtab_hdr->sh_info);
7715 tls_mask = lgot_masks[r_symndx];
7716 }
7717
7718 /* Ensure reloc mapping code below stays sane. */
7719 if ((R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TLSGD16 & 3)
7720 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TLSGD16_LO & 3)
7721 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TLSGD16_HI & 3)
7722 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TLSGD16_HA & 3)
7723 || (R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TPREL16 & 3)
7724 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TPREL16_LO & 3)
7725 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TPREL16_HI & 3)
7726 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TPREL16_HA & 3))
7727 abort ();
7728 switch (r_type)
7729 {
7730 default:
7731 break;
7732
7733 case R_PPC_GOT_TPREL16:
7734 case R_PPC_GOT_TPREL16_LO:
7735 if ((tls_mask & TLS_TLS) != 0
7736 && (tls_mask & TLS_TPREL) == 0)
7737 {
7738 bfd_vma insn;
7739
7740 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset);
7741 insn &= 31 << 21;
7742 insn |= 0x3c020000; /* addis 0,2,0 */
7743 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset);
7744 r_type = R_PPC_TPREL16_HA;
7745 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7746 }
7747 break;
7748
7749 case R_PPC_TLS:
7750 if ((tls_mask & TLS_TLS) != 0
7751 && (tls_mask & TLS_TPREL) == 0)
7752 {
7753 bfd_vma insn;
7754
7755 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
7756 insn = _bfd_elf_ppc_at_tls_transform (insn, 2);
7757 if (insn == 0)
7758 abort ();
7759 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
7760 r_type = R_PPC_TPREL16_LO;
7761 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7762
7763 /* Was PPC_TLS which sits on insn boundary, now
7764 PPC_TPREL16_LO which is at low-order half-word. */
7765 rel->r_offset += d_offset;
7766 }
7767 break;
7768
7769 case R_PPC_GOT_TLSGD16_HI:
7770 case R_PPC_GOT_TLSGD16_HA:
7771 tls_gd = TLS_TPRELGD;
7772 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
7773 goto tls_gdld_hi;
7774 break;
7775
7776 case R_PPC_GOT_TLSLD16_HI:
7777 case R_PPC_GOT_TLSLD16_HA:
7778 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
7779 {
7780 tls_gdld_hi:
7781 if ((tls_mask & tls_gd) != 0)
7782 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
7783 + R_PPC_GOT_TPREL16);
7784 else
7785 {
7786 rel->r_offset -= d_offset;
7787 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
7788 r_type = R_PPC_NONE;
7789 }
7790 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7791 }
7792 break;
7793
7794 case R_PPC_GOT_TLSGD16:
7795 case R_PPC_GOT_TLSGD16_LO:
7796 tls_gd = TLS_TPRELGD;
7797 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
7798 goto tls_ldgd_opt;
7799 break;
7800
7801 case R_PPC_GOT_TLSLD16:
7802 case R_PPC_GOT_TLSLD16_LO:
7803 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
7804 {
7805 unsigned int insn1, insn2;
7806 bfd_vma offset;
7807
7808 tls_ldgd_opt:
7809 offset = (bfd_vma) -1;
7810 /* If not using the newer R_PPC_TLSGD/LD to mark
7811 __tls_get_addr calls, we must trust that the call
7812 stays with its arg setup insns, ie. that the next
7813 reloc is the __tls_get_addr call associated with
7814 the current reloc. Edit both insns. */
7815 if (input_section->has_tls_get_addr_call
7816 && rel + 1 < relend
7817 && branch_reloc_hash_match (input_bfd, rel + 1,
7818 htab->tls_get_addr))
7819 offset = rel[1].r_offset;
7820 /* We read the low GOT_TLS insn because we need to keep
7821 the destination reg. It may be something other than
7822 the usual r3, and moved to r3 before the call by
7823 intervening code. */
7824 insn1 = bfd_get_32 (output_bfd,
7825 contents + rel->r_offset - d_offset);
7826 if ((tls_mask & tls_gd) != 0)
7827 {
7828 /* IE */
7829 insn1 &= (0x1f << 21) | (0x1f << 16);
7830 insn1 |= 32 << 26; /* lwz */
7831 if (offset != (bfd_vma) -1)
7832 {
7833 rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
7834 insn2 = 0x7c631214; /* add 3,3,2 */
7835 bfd_put_32 (output_bfd, insn2, contents + offset);
7836 }
7837 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
7838 + R_PPC_GOT_TPREL16);
7839 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7840 }
7841 else
7842 {
7843 /* LE */
7844 insn1 &= 0x1f << 21;
7845 insn1 |= 0x3c020000; /* addis r,2,0 */
7846 if (tls_gd == 0)
7847 {
7848 /* Was an LD reloc. */
7849 for (r_symndx = 0;
7850 r_symndx < symtab_hdr->sh_info;
7851 r_symndx++)
7852 if (local_sections[r_symndx] == sec)
7853 break;
7854 if (r_symndx >= symtab_hdr->sh_info)
7855 r_symndx = STN_UNDEF;
7856 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
7857 if (r_symndx != STN_UNDEF)
7858 rel->r_addend -= (local_syms[r_symndx].st_value
7859 + sec->output_offset
7860 + sec->output_section->vma);
7861 }
7862 r_type = R_PPC_TPREL16_HA;
7863 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7864 if (offset != (bfd_vma) -1)
7865 {
7866 rel[1].r_info = ELF32_R_INFO (r_symndx, R_PPC_TPREL16_LO);
7867 rel[1].r_offset = offset + d_offset;
7868 rel[1].r_addend = rel->r_addend;
7869 insn2 = 0x38630000; /* addi 3,3,0 */
7870 bfd_put_32 (output_bfd, insn2, contents + offset);
7871 }
7872 }
7873 bfd_put_32 (output_bfd, insn1,
7874 contents + rel->r_offset - d_offset);
7875 if (tls_gd == 0)
7876 {
7877 /* We changed the symbol on an LD reloc. Start over
7878 in order to get h, sym, sec etc. right. */
7879 rel--;
7880 continue;
7881 }
7882 }
7883 break;
7884
7885 case R_PPC_TLSGD:
7886 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
7887 {
7888 unsigned int insn2;
7889 bfd_vma offset = rel->r_offset;
7890
7891 if ((tls_mask & TLS_TPRELGD) != 0)
7892 {
7893 /* IE */
7894 r_type = R_PPC_NONE;
7895 insn2 = 0x7c631214; /* add 3,3,2 */
7896 }
7897 else
7898 {
7899 /* LE */
7900 r_type = R_PPC_TPREL16_LO;
7901 rel->r_offset += d_offset;
7902 insn2 = 0x38630000; /* addi 3,3,0 */
7903 }
7904 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7905 bfd_put_32 (output_bfd, insn2, contents + offset);
7906 /* Zap the reloc on the _tls_get_addr call too. */
7907 BFD_ASSERT (offset == rel[1].r_offset);
7908 rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
7909 }
7910 break;
7911
7912 case R_PPC_TLSLD:
7913 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
7914 {
7915 unsigned int insn2;
7916
7917 for (r_symndx = 0;
7918 r_symndx < symtab_hdr->sh_info;
7919 r_symndx++)
7920 if (local_sections[r_symndx] == sec)
7921 break;
7922 if (r_symndx >= symtab_hdr->sh_info)
7923 r_symndx = STN_UNDEF;
7924 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
7925 if (r_symndx != STN_UNDEF)
7926 rel->r_addend -= (local_syms[r_symndx].st_value
7927 + sec->output_offset
7928 + sec->output_section->vma);
7929
7930 rel->r_info = ELF32_R_INFO (r_symndx, R_PPC_TPREL16_LO);
7931 rel->r_offset += d_offset;
7932 insn2 = 0x38630000; /* addi 3,3,0 */
7933 bfd_put_32 (output_bfd, insn2,
7934 contents + rel->r_offset - d_offset);
7935 /* Zap the reloc on the _tls_get_addr call too. */
7936 BFD_ASSERT (rel->r_offset - d_offset == rel[1].r_offset);
7937 rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
7938 rel--;
7939 continue;
7940 }
7941 break;
7942 }
7943
7944 /* Handle other relocations that tweak non-addend part of insn. */
7945 branch_bit = 0;
7946 switch (r_type)
7947 {
7948 default:
7949 break;
7950
7951 /* Branch taken prediction relocations. */
7952 case R_PPC_ADDR14_BRTAKEN:
7953 case R_PPC_REL14_BRTAKEN:
7954 branch_bit = BRANCH_PREDICT_BIT;
7955 /* Fall thru */
7956
7957 /* Branch not taken prediction relocations. */
7958 case R_PPC_ADDR14_BRNTAKEN:
7959 case R_PPC_REL14_BRNTAKEN:
7960 {
7961 bfd_vma insn;
7962
7963 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
7964 insn &= ~BRANCH_PREDICT_BIT;
7965 insn |= branch_bit;
7966
7967 from = (rel->r_offset
7968 + input_section->output_offset
7969 + input_section->output_section->vma);
7970
7971 /* Invert 'y' bit if not the default. */
7972 if ((bfd_signed_vma) (relocation + rel->r_addend - from) < 0)
7973 insn ^= BRANCH_PREDICT_BIT;
7974
7975 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
7976 break;
7977 }
7978 }
7979
7980 ifunc = NULL;
7981 if (!htab->is_vxworks)
7982 {
7983 struct plt_entry *ent;
7984
7985 if (h != NULL)
7986 {
7987 if (h->type == STT_GNU_IFUNC)
7988 ifunc = &h->plt.plist;
7989 }
7990 else if (local_got_offsets != NULL
7991 && ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
7992 {
7993 struct plt_entry **local_plt;
7994
7995 local_plt = (struct plt_entry **) (local_got_offsets
7996 + symtab_hdr->sh_info);
7997 ifunc = local_plt + r_symndx;
7998 }
7999
8000 ent = NULL;
8001 if (ifunc != NULL
8002 && (!info->shared
8003 || is_branch_reloc (r_type)))
8004 {
8005 addend = 0;
8006 if (r_type == R_PPC_PLTREL24 && info->shared)
8007 addend = rel->r_addend;
8008 ent = find_plt_ent (ifunc, got2, addend);
8009 }
8010 if (ent != NULL)
8011 {
8012 if (h == NULL && (ent->plt.offset & 1) == 0)
8013 {
8014 Elf_Internal_Rela rela;
8015 bfd_byte *loc;
8016
8017 rela.r_offset = (htab->iplt->output_section->vma
8018 + htab->iplt->output_offset
8019 + ent->plt.offset);
8020 rela.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
8021 rela.r_addend = relocation;
8022 loc = htab->reliplt->contents;
8023 loc += (htab->reliplt->reloc_count++
8024 * sizeof (Elf32_External_Rela));
8025 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
8026
8027 ent->plt.offset |= 1;
8028 }
8029 if (h == NULL && (ent->glink_offset & 1) == 0)
8030 {
8031 unsigned char *p = ((unsigned char *) htab->glink->contents
8032 + ent->glink_offset);
8033 write_glink_stub (ent, htab->iplt, p, info);
8034 ent->glink_offset |= 1;
8035 }
8036
8037 unresolved_reloc = FALSE;
8038 if (htab->plt_type == PLT_NEW
8039 || !htab->elf.dynamic_sections_created
8040 || h == NULL
8041 || h->dynindx == -1)
8042 relocation = (htab->glink->output_section->vma
8043 + htab->glink->output_offset
8044 + (ent->glink_offset & ~1));
8045 else
8046 relocation = (htab->plt->output_section->vma
8047 + htab->plt->output_offset
8048 + ent->plt.offset);
8049 }
8050 }
8051
8052 addend = rel->r_addend;
8053 tls_type = 0;
8054 howto = NULL;
8055 if (r_type < R_PPC_max)
8056 howto = ppc_elf_howto_table[r_type];
8057 switch (r_type)
8058 {
8059 default:
8060 info->callbacks->einfo
8061 (_("%P: %B: unknown relocation type %d for symbol %s\n"),
8062 input_bfd, (int) r_type, sym_name);
8063
8064 bfd_set_error (bfd_error_bad_value);
8065 ret = FALSE;
8066 continue;
8067
8068 case R_PPC_NONE:
8069 case R_PPC_TLS:
8070 case R_PPC_TLSGD:
8071 case R_PPC_TLSLD:
8072 case R_PPC_EMB_MRKREF:
8073 case R_PPC_GNU_VTINHERIT:
8074 case R_PPC_GNU_VTENTRY:
8075 continue;
8076
8077 /* GOT16 relocations. Like an ADDR16 using the symbol's
8078 address in the GOT as relocation value instead of the
8079 symbol's value itself. Also, create a GOT entry for the
8080 symbol and put the symbol value there. */
8081 case R_PPC_GOT_TLSGD16:
8082 case R_PPC_GOT_TLSGD16_LO:
8083 case R_PPC_GOT_TLSGD16_HI:
8084 case R_PPC_GOT_TLSGD16_HA:
8085 tls_type = TLS_TLS | TLS_GD;
8086 goto dogot;
8087
8088 case R_PPC_GOT_TLSLD16:
8089 case R_PPC_GOT_TLSLD16_LO:
8090 case R_PPC_GOT_TLSLD16_HI:
8091 case R_PPC_GOT_TLSLD16_HA:
8092 tls_type = TLS_TLS | TLS_LD;
8093 goto dogot;
8094
8095 case R_PPC_GOT_TPREL16:
8096 case R_PPC_GOT_TPREL16_LO:
8097 case R_PPC_GOT_TPREL16_HI:
8098 case R_PPC_GOT_TPREL16_HA:
8099 tls_type = TLS_TLS | TLS_TPREL;
8100 goto dogot;
8101
8102 case R_PPC_GOT_DTPREL16:
8103 case R_PPC_GOT_DTPREL16_LO:
8104 case R_PPC_GOT_DTPREL16_HI:
8105 case R_PPC_GOT_DTPREL16_HA:
8106 tls_type = TLS_TLS | TLS_DTPREL;
8107 goto dogot;
8108
8109 case R_PPC_GOT16:
8110 case R_PPC_GOT16_LO:
8111 case R_PPC_GOT16_HI:
8112 case R_PPC_GOT16_HA:
8113 tls_mask = 0;
8114 dogot:
8115 {
8116 /* Relocation is to the entry for this symbol in the global
8117 offset table. */
8118 bfd_vma off;
8119 bfd_vma *offp;
8120 unsigned long indx;
8121
8122 if (htab->got == NULL)
8123 abort ();
8124
8125 indx = 0;
8126 if (tls_type == (TLS_TLS | TLS_LD)
8127 && (h == NULL
8128 || !h->def_dynamic))
8129 offp = &htab->tlsld_got.offset;
8130 else if (h != NULL)
8131 {
8132 bfd_boolean dyn;
8133 dyn = htab->elf.dynamic_sections_created;
8134 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
8135 || (info->shared
8136 && SYMBOL_REFERENCES_LOCAL (info, h)))
8137 /* This is actually a static link, or it is a
8138 -Bsymbolic link and the symbol is defined
8139 locally, or the symbol was forced to be local
8140 because of a version file. */
8141 ;
8142 else
8143 {
8144 BFD_ASSERT (h->dynindx != -1);
8145 indx = h->dynindx;
8146 unresolved_reloc = FALSE;
8147 }
8148 offp = &h->got.offset;
8149 }
8150 else
8151 {
8152 if (local_got_offsets == NULL)
8153 abort ();
8154 offp = &local_got_offsets[r_symndx];
8155 }
8156
8157 /* The offset must always be a multiple of 4. We use the
8158 least significant bit to record whether we have already
8159 processed this entry. */
8160 off = *offp;
8161 if ((off & 1) != 0)
8162 off &= ~1;
8163 else
8164 {
8165 unsigned int tls_m = (tls_mask
8166 & (TLS_LD | TLS_GD | TLS_DTPREL
8167 | TLS_TPREL | TLS_TPRELGD));
8168
8169 if (offp == &htab->tlsld_got.offset)
8170 tls_m = TLS_LD;
8171 else if (h == NULL
8172 || !h->def_dynamic)
8173 tls_m &= ~TLS_LD;
8174
8175 /* We might have multiple got entries for this sym.
8176 Initialize them all. */
8177 do
8178 {
8179 int tls_ty = 0;
8180
8181 if ((tls_m & TLS_LD) != 0)
8182 {
8183 tls_ty = TLS_TLS | TLS_LD;
8184 tls_m &= ~TLS_LD;
8185 }
8186 else if ((tls_m & TLS_GD) != 0)
8187 {
8188 tls_ty = TLS_TLS | TLS_GD;
8189 tls_m &= ~TLS_GD;
8190 }
8191 else if ((tls_m & TLS_DTPREL) != 0)
8192 {
8193 tls_ty = TLS_TLS | TLS_DTPREL;
8194 tls_m &= ~TLS_DTPREL;
8195 }
8196 else if ((tls_m & (TLS_TPREL | TLS_TPRELGD)) != 0)
8197 {
8198 tls_ty = TLS_TLS | TLS_TPREL;
8199 tls_m = 0;
8200 }
8201
8202 /* Generate relocs for the dynamic linker. */
8203 if ((info->shared || indx != 0)
8204 && (offp == &htab->tlsld_got.offset
8205 || h == NULL
8206 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
8207 || h->root.type != bfd_link_hash_undefweak))
8208 {
8209 asection *rsec = htab->relgot;
8210 bfd_byte * loc;
8211
8212 if (ifunc != NULL)
8213 rsec = htab->reliplt;
8214 outrel.r_offset = (htab->got->output_section->vma
8215 + htab->got->output_offset
8216 + off);
8217 outrel.r_addend = 0;
8218 if (tls_ty & (TLS_LD | TLS_GD))
8219 {
8220 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPMOD32);
8221 if (tls_ty == (TLS_TLS | TLS_GD))
8222 {
8223 loc = rsec->contents;
8224 loc += (rsec->reloc_count++
8225 * sizeof (Elf32_External_Rela));
8226 bfd_elf32_swap_reloca_out (output_bfd,
8227 &outrel, loc);
8228 outrel.r_offset += 4;
8229 outrel.r_info
8230 = ELF32_R_INFO (indx, R_PPC_DTPREL32);
8231 }
8232 }
8233 else if (tls_ty == (TLS_TLS | TLS_DTPREL))
8234 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPREL32);
8235 else if (tls_ty == (TLS_TLS | TLS_TPREL))
8236 outrel.r_info = ELF32_R_INFO (indx, R_PPC_TPREL32);
8237 else if (indx != 0)
8238 outrel.r_info = ELF32_R_INFO (indx, R_PPC_GLOB_DAT);
8239 else if (ifunc != NULL)
8240 outrel.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
8241 else
8242 outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
8243 if (indx == 0 && tls_ty != (TLS_TLS | TLS_LD))
8244 {
8245 outrel.r_addend += relocation;
8246 if (tls_ty & (TLS_GD | TLS_DTPREL | TLS_TPREL))
8247 {
8248 if (htab->elf.tls_sec == NULL)
8249 outrel.r_addend = 0;
8250 else
8251 outrel.r_addend -= htab->elf.tls_sec->vma;
8252 }
8253 }
8254 loc = rsec->contents;
8255 loc += (rsec->reloc_count++
8256 * sizeof (Elf32_External_Rela));
8257 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
8258 }
8259
8260 /* Init the .got section contents if we're not
8261 emitting a reloc. */
8262 else
8263 {
8264 bfd_vma value = relocation;
8265
8266 if (tls_ty == (TLS_TLS | TLS_LD))
8267 value = 1;
8268 else if (tls_ty != 0)
8269 {
8270 if (htab->elf.tls_sec == NULL)
8271 value = 0;
8272 else
8273 {
8274 value -= htab->elf.tls_sec->vma + DTP_OFFSET;
8275 if (tls_ty == (TLS_TLS | TLS_TPREL))
8276 value += DTP_OFFSET - TP_OFFSET;
8277 }
8278
8279 if (tls_ty == (TLS_TLS | TLS_GD))
8280 {
8281 bfd_put_32 (output_bfd, value,
8282 htab->got->contents + off + 4);
8283 value = 1;
8284 }
8285 }
8286 bfd_put_32 (output_bfd, value,
8287 htab->got->contents + off);
8288 }
8289
8290 off += 4;
8291 if (tls_ty & (TLS_LD | TLS_GD))
8292 off += 4;
8293 }
8294 while (tls_m != 0);
8295
8296 off = *offp;
8297 *offp = off | 1;
8298 }
8299
8300 if (off >= (bfd_vma) -2)
8301 abort ();
8302
8303 if ((tls_type & TLS_TLS) != 0)
8304 {
8305 if (tls_type != (TLS_TLS | TLS_LD))
8306 {
8307 if ((tls_mask & TLS_LD) != 0
8308 && !(h == NULL
8309 || !h->def_dynamic))
8310 off += 8;
8311 if (tls_type != (TLS_TLS | TLS_GD))
8312 {
8313 if ((tls_mask & TLS_GD) != 0)
8314 off += 8;
8315 if (tls_type != (TLS_TLS | TLS_DTPREL))
8316 {
8317 if ((tls_mask & TLS_DTPREL) != 0)
8318 off += 4;
8319 }
8320 }
8321 }
8322 }
8323
8324 relocation = (htab->got->output_section->vma
8325 + htab->got->output_offset
8326 + off
8327 - SYM_VAL (htab->elf.hgot));
8328
8329 /* Addends on got relocations don't make much sense.
8330 x+off@got is actually x@got+off, and since the got is
8331 generated by a hash table traversal, the value in the
8332 got at entry m+n bears little relation to the entry m. */
8333 if (addend != 0)
8334 info->callbacks->einfo
8335 (_("%P: %H: non-zero addend on %s reloc against `%s'\n"),
8336 input_bfd, input_section, rel->r_offset,
8337 howto->name,
8338 sym_name);
8339 }
8340 break;
8341
8342 /* Relocations that need no special processing. */
8343 case R_PPC_LOCAL24PC:
8344 /* It makes no sense to point a local relocation
8345 at a symbol not in this object. */
8346 if (unresolved_reloc)
8347 {
8348 if (! (*info->callbacks->undefined_symbol) (info,
8349 h->root.root.string,
8350 input_bfd,
8351 input_section,
8352 rel->r_offset,
8353 TRUE))
8354 return FALSE;
8355 continue;
8356 }
8357 break;
8358
8359 case R_PPC_DTPREL16:
8360 case R_PPC_DTPREL16_LO:
8361 case R_PPC_DTPREL16_HI:
8362 case R_PPC_DTPREL16_HA:
8363 if (htab->elf.tls_sec != NULL)
8364 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
8365 break;
8366
8367 /* Relocations that may need to be propagated if this is a shared
8368 object. */
8369 case R_PPC_TPREL16:
8370 case R_PPC_TPREL16_LO:
8371 case R_PPC_TPREL16_HI:
8372 case R_PPC_TPREL16_HA:
8373 if (h != NULL
8374 && h->root.type == bfd_link_hash_undefweak
8375 && h->dynindx == -1)
8376 {
8377 /* Make this relocation against an undefined weak symbol
8378 resolve to zero. This is really just a tweak, since
8379 code using weak externs ought to check that they are
8380 defined before using them. */
8381 bfd_byte *p = contents + rel->r_offset - d_offset;
8382 unsigned int insn = bfd_get_32 (output_bfd, p);
8383 insn = _bfd_elf_ppc_at_tprel_transform (insn, 2);
8384 if (insn != 0)
8385 bfd_put_32 (output_bfd, insn, p);
8386 break;
8387 }
8388 if (htab->elf.tls_sec != NULL)
8389 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
8390 /* The TPREL16 relocs shouldn't really be used in shared
8391 libs as they will result in DT_TEXTREL being set, but
8392 support them anyway. */
8393 goto dodyn;
8394
8395 case R_PPC_TPREL32:
8396 if (htab->elf.tls_sec != NULL)
8397 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
8398 goto dodyn;
8399
8400 case R_PPC_DTPREL32:
8401 if (htab->elf.tls_sec != NULL)
8402 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
8403 goto dodyn;
8404
8405 case R_PPC_DTPMOD32:
8406 relocation = 1;
8407 addend = 0;
8408 goto dodyn;
8409
8410 case R_PPC_REL16:
8411 case R_PPC_REL16_LO:
8412 case R_PPC_REL16_HI:
8413 case R_PPC_REL16_HA:
8414 break;
8415
8416 case R_PPC_REL32:
8417 if (h == NULL || h == htab->elf.hgot)
8418 break;
8419 /* fall through */
8420
8421 case R_PPC_ADDR32:
8422 case R_PPC_ADDR16:
8423 case R_PPC_ADDR16_LO:
8424 case R_PPC_ADDR16_HI:
8425 case R_PPC_ADDR16_HA:
8426 case R_PPC_UADDR32:
8427 case R_PPC_UADDR16:
8428 goto dodyn;
8429
8430 case R_PPC_VLE_REL8:
8431 case R_PPC_VLE_REL15:
8432 case R_PPC_VLE_REL24:
8433 case R_PPC_REL24:
8434 case R_PPC_REL14:
8435 case R_PPC_REL14_BRTAKEN:
8436 case R_PPC_REL14_BRNTAKEN:
8437 /* If these relocations are not to a named symbol, they can be
8438 handled right here, no need to bother the dynamic linker. */
8439 if (SYMBOL_CALLS_LOCAL (info, h)
8440 || h == htab->elf.hgot)
8441 break;
8442 /* fall through */
8443
8444 case R_PPC_ADDR24:
8445 case R_PPC_ADDR14:
8446 case R_PPC_ADDR14_BRTAKEN:
8447 case R_PPC_ADDR14_BRNTAKEN:
8448 if (h != NULL && !info->shared)
8449 break;
8450 /* fall through */
8451
8452 dodyn:
8453 if ((input_section->flags & SEC_ALLOC) == 0
8454 || is_vxworks_tls)
8455 break;
8456
8457 if ((info->shared
8458 && !(h != NULL
8459 && ((h->root.type == bfd_link_hash_undefined
8460 && (ELF_ST_VISIBILITY (h->other) == STV_HIDDEN
8461 || ELF_ST_VISIBILITY (h->other) == STV_INTERNAL))
8462 || (h->root.type == bfd_link_hash_undefweak
8463 && ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)))
8464 && (must_be_dyn_reloc (info, r_type)
8465 || !SYMBOL_CALLS_LOCAL (info, h)))
8466 || (ELIMINATE_COPY_RELOCS
8467 && !info->shared
8468 && h != NULL
8469 && h->dynindx != -1
8470 && !h->non_got_ref
8471 && !h->def_regular))
8472 {
8473 int skip;
8474 bfd_byte *loc;
8475 asection *sreloc;
8476 #ifdef DEBUG
8477 fprintf (stderr, "ppc_elf_relocate_section needs to "
8478 "create relocation for %s\n",
8479 (h && h->root.root.string
8480 ? h->root.root.string : "<unknown>"));
8481 #endif
8482
8483 /* When generating a shared object, these relocations
8484 are copied into the output file to be resolved at run
8485 time. */
8486 sreloc = elf_section_data (input_section)->sreloc;
8487 if (ifunc)
8488 sreloc = htab->reliplt;
8489 if (sreloc == NULL)
8490 return FALSE;
8491
8492 skip = 0;
8493 outrel.r_offset = _bfd_elf_section_offset (output_bfd, info,
8494 input_section,
8495 rel->r_offset);
8496 if (outrel.r_offset == (bfd_vma) -1
8497 || outrel.r_offset == (bfd_vma) -2)
8498 skip = (int) outrel.r_offset;
8499 outrel.r_offset += (input_section->output_section->vma
8500 + input_section->output_offset);
8501
8502 if (skip)
8503 memset (&outrel, 0, sizeof outrel);
8504 else if ((h != NULL
8505 && (h->root.type == bfd_link_hash_undefined
8506 || h->root.type == bfd_link_hash_undefweak))
8507 || !SYMBOL_REFERENCES_LOCAL (info, h))
8508 {
8509 BFD_ASSERT (h->dynindx != -1);
8510 unresolved_reloc = FALSE;
8511 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
8512 outrel.r_addend = rel->r_addend;
8513 }
8514 else
8515 {
8516 outrel.r_addend = relocation + rel->r_addend;
8517
8518 if (r_type != R_PPC_ADDR32)
8519 {
8520 long indx = 0;
8521
8522 if (ifunc != NULL)
8523 {
8524 /* If we get here when building a static
8525 executable, then the libc startup function
8526 responsible for applying indirect function
8527 relocations is going to complain about
8528 the reloc type.
8529 If we get here when building a dynamic
8530 executable, it will be because we have
8531 a text relocation. The dynamic loader
8532 will set the text segment writable and
8533 non-executable to apply text relocations.
8534 So we'll segfault when trying to run the
8535 indirection function to resolve the reloc. */
8536 info->callbacks->einfo
8537 (_("%P: %H: relocation %s for indirect "
8538 "function %s unsupported\n"),
8539 input_bfd, input_section, rel->r_offset,
8540 howto->name,
8541 sym_name);
8542 ret = FALSE;
8543 }
8544 else if (r_symndx == STN_UNDEF || bfd_is_abs_section (sec))
8545 ;
8546 else if (sec == NULL || sec->owner == NULL)
8547 {
8548 bfd_set_error (bfd_error_bad_value);
8549 ret = FALSE;
8550 }
8551 else
8552 {
8553 asection *osec;
8554
8555 /* We are turning this relocation into one
8556 against a section symbol. It would be
8557 proper to subtract the symbol's value,
8558 osec->vma, from the emitted reloc addend,
8559 but ld.so expects buggy relocs.
8560 FIXME: Why not always use a zero index? */
8561 osec = sec->output_section;
8562 indx = elf_section_data (osec)->dynindx;
8563 if (indx == 0)
8564 {
8565 osec = htab->elf.text_index_section;
8566 indx = elf_section_data (osec)->dynindx;
8567 }
8568 BFD_ASSERT (indx != 0);
8569 #ifdef DEBUG
8570 if (indx == 0)
8571 printf ("indx=%ld section=%s flags=%08x name=%s\n",
8572 indx, osec->name, osec->flags,
8573 h->root.root.string);
8574 #endif
8575 }
8576
8577 outrel.r_info = ELF32_R_INFO (indx, r_type);
8578 }
8579 else if (ifunc != NULL)
8580 outrel.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
8581 else
8582 outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
8583 }
8584
8585 loc = sreloc->contents;
8586 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
8587 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
8588
8589 if (skip == -1)
8590 continue;
8591
8592 /* This reloc will be computed at runtime. We clear the memory
8593 so that it contains predictable value. */
8594 if (! skip
8595 && ((input_section->flags & SEC_ALLOC) != 0
8596 || ELF32_R_TYPE (outrel.r_info) != R_PPC_RELATIVE))
8597 {
8598 relocation = howto->pc_relative ? outrel.r_offset : 0;
8599 addend = 0;
8600 break;
8601 }
8602 }
8603 break;
8604
8605 case R_PPC_RELAX_PLT:
8606 case R_PPC_RELAX_PLTREL24:
8607 if (h != NULL)
8608 {
8609 struct plt_entry *ent;
8610 bfd_vma got2_addend = 0;
8611
8612 if (r_type == R_PPC_RELAX_PLTREL24)
8613 {
8614 if (info->shared)
8615 got2_addend = addend;
8616 addend = 0;
8617 }
8618 ent = find_plt_ent (&h->plt.plist, got2, got2_addend);
8619 if (htab->plt_type == PLT_NEW)
8620 relocation = (htab->glink->output_section->vma
8621 + htab->glink->output_offset
8622 + ent->glink_offset);
8623 else
8624 relocation = (htab->plt->output_section->vma
8625 + htab->plt->output_offset
8626 + ent->plt.offset);
8627 }
8628 /* Fall thru */
8629
8630 case R_PPC_RELAX:
8631 {
8632 const int *stub;
8633 size_t size;
8634 size_t insn_offset = rel->r_offset;
8635 unsigned int insn;
8636
8637 if (info->shared)
8638 {
8639 relocation -= (input_section->output_section->vma
8640 + input_section->output_offset
8641 + rel->r_offset - 4);
8642 stub = shared_stub_entry;
8643 bfd_put_32 (output_bfd, stub[0], contents + insn_offset - 12);
8644 bfd_put_32 (output_bfd, stub[1], contents + insn_offset - 8);
8645 bfd_put_32 (output_bfd, stub[2], contents + insn_offset - 4);
8646 stub += 3;
8647 size = ARRAY_SIZE (shared_stub_entry) - 3;
8648 }
8649 else
8650 {
8651 stub = stub_entry;
8652 size = ARRAY_SIZE (stub_entry);
8653 }
8654
8655 relocation += addend;
8656 if (info->relocatable)
8657 relocation = 0;
8658
8659 /* First insn is HA, second is LO. */
8660 insn = *stub++;
8661 insn |= ((relocation + 0x8000) >> 16) & 0xffff;
8662 bfd_put_32 (output_bfd, insn, contents + insn_offset);
8663 insn_offset += 4;
8664
8665 insn = *stub++;
8666 insn |= relocation & 0xffff;
8667 bfd_put_32 (output_bfd, insn, contents + insn_offset);
8668 insn_offset += 4;
8669 size -= 2;
8670
8671 while (size != 0)
8672 {
8673 insn = *stub++;
8674 --size;
8675 bfd_put_32 (output_bfd, insn, contents + insn_offset);
8676 insn_offset += 4;
8677 }
8678
8679 /* Rewrite the reloc and convert one of the trailing nop
8680 relocs to describe this relocation. */
8681 BFD_ASSERT (ELF32_R_TYPE (relend[-1].r_info) == R_PPC_NONE);
8682 /* The relocs are at the bottom 2 bytes */
8683 rel[0].r_offset += d_offset;
8684 memmove (rel + 1, rel, (relend - rel - 1) * sizeof (*rel));
8685 rel[0].r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_HA);
8686 rel[1].r_offset += 4;
8687 rel[1].r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_LO);
8688 rel++;
8689 }
8690 continue;
8691
8692 /* Indirect .sdata relocation. */
8693 case R_PPC_EMB_SDAI16:
8694 BFD_ASSERT (htab->sdata[0].section != NULL);
8695 if (!is_static_defined (htab->sdata[0].sym))
8696 {
8697 unresolved_reloc = TRUE;
8698 break;
8699 }
8700 relocation
8701 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[0],
8702 h, relocation, rel);
8703 addend = 0;
8704 break;
8705
8706 /* Indirect .sdata2 relocation. */
8707 case R_PPC_EMB_SDA2I16:
8708 BFD_ASSERT (htab->sdata[1].section != NULL);
8709 if (!is_static_defined (htab->sdata[1].sym))
8710 {
8711 unresolved_reloc = TRUE;
8712 break;
8713 }
8714 relocation
8715 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[1],
8716 h, relocation, rel);
8717 addend = 0;
8718 break;
8719
8720 /* Handle the TOC16 reloc. We want to use the offset within the .got
8721 section, not the actual VMA. This is appropriate when generating
8722 an embedded ELF object, for which the .got section acts like the
8723 AIX .toc section. */
8724 case R_PPC_TOC16: /* phony GOT16 relocations */
8725 if (sec == NULL || sec->output_section == NULL)
8726 {
8727 unresolved_reloc = TRUE;
8728 break;
8729 }
8730 BFD_ASSERT (strcmp (bfd_get_section_name (sec->owner, sec),
8731 ".got") == 0
8732 || strcmp (bfd_get_section_name (sec->owner, sec),
8733 ".cgot") == 0);
8734
8735 addend -= sec->output_section->vma + sec->output_offset + 0x8000;
8736 break;
8737
8738 case R_PPC_PLTREL24:
8739 if (h != NULL && ifunc == NULL)
8740 {
8741 struct plt_entry *ent = find_plt_ent (&h->plt.plist, got2,
8742 info->shared ? addend : 0);
8743 if (ent == NULL
8744 || htab->plt == NULL)
8745 {
8746 /* We didn't make a PLT entry for this symbol. This
8747 happens when statically linking PIC code, or when
8748 using -Bsymbolic. */
8749 }
8750 else
8751 {
8752 /* Relocation is to the entry for this symbol in the
8753 procedure linkage table. */
8754 unresolved_reloc = FALSE;
8755 if (htab->plt_type == PLT_NEW)
8756 relocation = (htab->glink->output_section->vma
8757 + htab->glink->output_offset
8758 + ent->glink_offset);
8759 else
8760 relocation = (htab->plt->output_section->vma
8761 + htab->plt->output_offset
8762 + ent->plt.offset);
8763 }
8764 }
8765
8766 /* R_PPC_PLTREL24 is rather special. If non-zero, the
8767 addend specifies the GOT pointer offset within .got2.
8768 Don't apply it to the relocation field. */
8769 addend = 0;
8770 break;
8771
8772 /* Relocate against _SDA_BASE_. */
8773 case R_PPC_SDAREL16:
8774 {
8775 const char *name;
8776 struct elf_link_hash_entry *sda = htab->sdata[0].sym;
8777
8778 if (sec == NULL
8779 || sec->output_section == NULL
8780 || !is_static_defined (sda))
8781 {
8782 unresolved_reloc = TRUE;
8783 break;
8784 }
8785 addend -= SYM_VAL (sda);
8786
8787 name = bfd_get_section_name (output_bfd, sec->output_section);
8788 if (!(strcmp (name, ".sdata") == 0
8789 || strcmp (name, ".sbss") == 0))
8790 {
8791 info->callbacks->einfo
8792 (_("%P: %B: the target (%s) of a %s relocation is "
8793 "in the wrong output section (%s)\n"),
8794 input_bfd,
8795 sym_name,
8796 howto->name,
8797 name);
8798 }
8799 }
8800 break;
8801
8802 /* Relocate against _SDA2_BASE_. */
8803 case R_PPC_EMB_SDA2REL:
8804 {
8805 const char *name;
8806 struct elf_link_hash_entry *sda = htab->sdata[1].sym;
8807
8808 if (sec == NULL
8809 || sec->output_section == NULL
8810 || !is_static_defined (sda))
8811 {
8812 unresolved_reloc = TRUE;
8813 break;
8814 }
8815 addend -= SYM_VAL (sda);
8816
8817 name = bfd_get_section_name (output_bfd, sec->output_section);
8818 if (!(strcmp (name, ".sdata2") == 0
8819 || strcmp (name, ".sbss2") == 0))
8820 {
8821 info->callbacks->einfo
8822 (_("%P: %B: the target (%s) of a %s relocation is "
8823 "in the wrong output section (%s)\n"),
8824 input_bfd,
8825 sym_name,
8826 howto->name,
8827 name);
8828 }
8829 }
8830 break;
8831
8832 case R_PPC_VLE_LO16A:
8833 relocation = relocation + addend;
8834 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
8835 relocation, split16a_type);
8836 continue;
8837
8838 case R_PPC_VLE_LO16D:
8839 relocation = relocation + addend;
8840 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
8841 relocation, split16d_type);
8842 continue;
8843
8844 case R_PPC_VLE_HI16A:
8845 relocation = (relocation + addend) >> 16;
8846 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
8847 relocation, split16a_type);
8848 continue;
8849
8850 case R_PPC_VLE_HI16D:
8851 relocation = (relocation + addend) >> 16;
8852 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
8853 relocation, split16d_type);
8854 continue;
8855
8856 case R_PPC_VLE_HA16A:
8857 relocation = (relocation + addend + 0x8000) >> 16;
8858 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
8859 relocation, split16a_type);
8860 continue;
8861
8862 case R_PPC_VLE_HA16D:
8863 relocation = (relocation + addend + 0x8000) >> 16;
8864 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
8865 relocation, split16d_type);
8866 continue;
8867
8868 /* Relocate against either _SDA_BASE_, _SDA2_BASE_, or 0. */
8869 case R_PPC_EMB_SDA21:
8870 case R_PPC_VLE_SDA21:
8871 case R_PPC_EMB_RELSDA:
8872 case R_PPC_VLE_SDA21_LO:
8873 {
8874 const char *name;
8875 int reg;
8876 unsigned int insn;
8877 struct elf_link_hash_entry *sda = NULL;
8878
8879 if (sec == NULL || sec->output_section == NULL)
8880 {
8881 unresolved_reloc = TRUE;
8882 break;
8883 }
8884
8885 name = bfd_get_section_name (output_bfd, sec->output_section);
8886 if (strcmp (name, ".sdata") == 0
8887 || strcmp (name, ".sbss") == 0)
8888 {
8889 reg = 13;
8890 sda = htab->sdata[0].sym;
8891 }
8892 else if (strcmp (name, ".sdata2") == 0
8893 || strcmp (name, ".sbss2") == 0)
8894 {
8895 reg = 2;
8896 sda = htab->sdata[1].sym;
8897 }
8898 else if (strcmp (name, ".PPC.EMB.sdata0") == 0
8899 || strcmp (name, ".PPC.EMB.sbss0") == 0)
8900 {
8901 reg = 0;
8902 }
8903 else
8904 {
8905 info->callbacks->einfo
8906 (_("%P: %B: the target (%s) of a %s relocation is "
8907 "in the wrong output section (%s)\n"),
8908 input_bfd,
8909 sym_name,
8910 howto->name,
8911 name);
8912
8913 bfd_set_error (bfd_error_bad_value);
8914 ret = FALSE;
8915 continue;
8916 }
8917
8918 if (sda != NULL)
8919 {
8920 if (!is_static_defined (sda))
8921 {
8922 unresolved_reloc = TRUE;
8923 break;
8924 }
8925 addend -= SYM_VAL (sda);
8926 }
8927
8928 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
8929 if (reg == 0
8930 && (r_type == R_PPC_VLE_SDA21
8931 || r_type == R_PPC_VLE_SDA21_LO))
8932 {
8933 relocation = relocation + addend;
8934 addend = 0;
8935
8936 /* Force e_li insn, keeping RT from original insn. */
8937 insn &= 0x1f << 21;
8938 insn |= 28u << 26;
8939
8940 /* We have an li20 field, bits 17..20, 11..15, 21..31. */
8941 /* Top 4 bits of value to 17..20. */
8942 insn |= (relocation & 0xf0000) >> 5;
8943 /* Next 5 bits of the value to 11..15. */
8944 insn |= (relocation & 0xf800) << 5;
8945 /* And the final 11 bits of the value to bits 21 to 31. */
8946 insn |= relocation & 0x7ff;
8947
8948 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
8949
8950 if (r_type == R_PPC_VLE_SDA21
8951 && ((relocation + 0x80000) & 0xffffffff) > 0x100000)
8952 goto overflow;
8953 continue;
8954 }
8955 else if (r_type == R_PPC_EMB_SDA21
8956 || r_type == R_PPC_VLE_SDA21
8957 || r_type == R_PPC_VLE_SDA21_LO)
8958 {
8959 /* Fill in register field. */
8960 insn = (insn & ~RA_REGISTER_MASK) | (reg << RA_REGISTER_SHIFT);
8961 }
8962 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
8963 }
8964 break;
8965
8966 case R_PPC_VLE_SDAREL_LO16A:
8967 case R_PPC_VLE_SDAREL_LO16D:
8968 case R_PPC_VLE_SDAREL_HI16A:
8969 case R_PPC_VLE_SDAREL_HI16D:
8970 case R_PPC_VLE_SDAREL_HA16A:
8971 case R_PPC_VLE_SDAREL_HA16D:
8972 {
8973 bfd_vma value;
8974 const char *name;
8975 //int reg;
8976 struct elf_link_hash_entry *sda = NULL;
8977
8978 if (sec == NULL || sec->output_section == NULL)
8979 {
8980 unresolved_reloc = TRUE;
8981 break;
8982 }
8983
8984 name = bfd_get_section_name (output_bfd, sec->output_section);
8985 if (strcmp (name, ".sdata") == 0
8986 || strcmp (name, ".sbss") == 0)
8987 {
8988 //reg = 13;
8989 sda = htab->sdata[0].sym;
8990 }
8991 else if (strcmp (name, ".sdata2") == 0
8992 || strcmp (name, ".sbss2") == 0)
8993 {
8994 //reg = 2;
8995 sda = htab->sdata[1].sym;
8996 }
8997 else
8998 {
8999 (*_bfd_error_handler)
9000 (_("%B: the target (%s) of a %s relocation is "
9001 "in the wrong output section (%s)"),
9002 input_bfd,
9003 sym_name,
9004 howto->name,
9005 name);
9006
9007 bfd_set_error (bfd_error_bad_value);
9008 ret = FALSE;
9009 continue;
9010 }
9011
9012 if (sda != NULL)
9013 {
9014 if (!is_static_defined (sda))
9015 {
9016 unresolved_reloc = TRUE;
9017 break;
9018 }
9019 }
9020
9021 value = (sda->root.u.def.section->output_section->vma
9022 + sda->root.u.def.section->output_offset
9023 + addend);
9024
9025 if (r_type == R_PPC_VLE_SDAREL_LO16A)
9026 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9027 value, split16a_type);
9028 else if (r_type == R_PPC_VLE_SDAREL_LO16D)
9029 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9030 value, split16d_type);
9031 else if (r_type == R_PPC_VLE_SDAREL_HI16A)
9032 {
9033 value = value >> 16;
9034 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9035 value, split16a_type);
9036 }
9037 else if (r_type == R_PPC_VLE_SDAREL_HI16D)
9038 {
9039 value = value >> 16;
9040 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9041 value, split16d_type);
9042 }
9043 else if (r_type == R_PPC_VLE_SDAREL_HA16A)
9044 {
9045 value = (value + 0x8000) >> 16;
9046 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9047 value, split16a_type);
9048 }
9049 else if (r_type == R_PPC_VLE_SDAREL_HA16D)
9050 {
9051 value = (value + 0x8000) >> 16;
9052 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9053 value, split16d_type);
9054 }
9055 }
9056 continue;
9057
9058 /* Relocate against the beginning of the section. */
9059 case R_PPC_SECTOFF:
9060 case R_PPC_SECTOFF_LO:
9061 case R_PPC_SECTOFF_HI:
9062 case R_PPC_SECTOFF_HA:
9063 if (sec == NULL || sec->output_section == NULL)
9064 {
9065 unresolved_reloc = TRUE;
9066 break;
9067 }
9068 addend -= sec->output_section->vma;
9069 break;
9070
9071 /* Negative relocations. */
9072 case R_PPC_EMB_NADDR32:
9073 case R_PPC_EMB_NADDR16:
9074 case R_PPC_EMB_NADDR16_LO:
9075 case R_PPC_EMB_NADDR16_HI:
9076 case R_PPC_EMB_NADDR16_HA:
9077 addend -= 2 * relocation;
9078 break;
9079
9080 case R_PPC_COPY:
9081 case R_PPC_GLOB_DAT:
9082 case R_PPC_JMP_SLOT:
9083 case R_PPC_RELATIVE:
9084 case R_PPC_IRELATIVE:
9085 case R_PPC_PLT32:
9086 case R_PPC_PLTREL32:
9087 case R_PPC_PLT16_LO:
9088 case R_PPC_PLT16_HI:
9089 case R_PPC_PLT16_HA:
9090 case R_PPC_ADDR30:
9091 case R_PPC_EMB_RELSEC16:
9092 case R_PPC_EMB_RELST_LO:
9093 case R_PPC_EMB_RELST_HI:
9094 case R_PPC_EMB_RELST_HA:
9095 case R_PPC_EMB_BIT_FLD:
9096 info->callbacks->einfo
9097 (_("%P: %B: relocation %s is not yet supported for symbol %s\n"),
9098 input_bfd,
9099 howto->name,
9100 sym_name);
9101
9102 bfd_set_error (bfd_error_invalid_operation);
9103 ret = FALSE;
9104 continue;
9105 }
9106
9107 /* Do any further special processing. */
9108 switch (r_type)
9109 {
9110 default:
9111 break;
9112
9113 case R_PPC_ADDR16_HA:
9114 case R_PPC_REL16_HA:
9115 case R_PPC_SECTOFF_HA:
9116 case R_PPC_TPREL16_HA:
9117 case R_PPC_DTPREL16_HA:
9118 case R_PPC_EMB_NADDR16_HA:
9119 case R_PPC_EMB_RELST_HA:
9120 /* It's just possible that this symbol is a weak symbol
9121 that's not actually defined anywhere. In that case,
9122 'sec' would be NULL, and we should leave the symbol
9123 alone (it will be set to zero elsewhere in the link). */
9124 if (sec == NULL)
9125 break;
9126 /* Fall thru */
9127
9128 case R_PPC_PLT16_HA:
9129 case R_PPC_GOT16_HA:
9130 case R_PPC_GOT_TLSGD16_HA:
9131 case R_PPC_GOT_TLSLD16_HA:
9132 case R_PPC_GOT_TPREL16_HA:
9133 case R_PPC_GOT_DTPREL16_HA:
9134 /* Add 0x10000 if sign bit in 0:15 is set.
9135 Bits 0:15 are not used. */
9136 addend += 0x8000;
9137 break;
9138
9139 case R_PPC_ADDR16:
9140 case R_PPC_ADDR16_LO:
9141 case R_PPC_GOT16:
9142 case R_PPC_GOT16_LO:
9143 case R_PPC_SDAREL16:
9144 case R_PPC_SECTOFF:
9145 case R_PPC_SECTOFF_LO:
9146 case R_PPC_DTPREL16:
9147 case R_PPC_DTPREL16_LO:
9148 case R_PPC_TPREL16:
9149 case R_PPC_TPREL16_LO:
9150 case R_PPC_GOT_TLSGD16:
9151 case R_PPC_GOT_TLSGD16_LO:
9152 case R_PPC_GOT_TLSLD16:
9153 case R_PPC_GOT_TLSLD16_LO:
9154 case R_PPC_GOT_DTPREL16:
9155 case R_PPC_GOT_DTPREL16_LO:
9156 case R_PPC_GOT_TPREL16:
9157 case R_PPC_GOT_TPREL16_LO:
9158 {
9159 /* The 32-bit ABI lacks proper relocations to deal with
9160 certain 64-bit instructions. Prevent damage to bits
9161 that make up part of the insn opcode. */
9162 unsigned int insn, mask, lobit;
9163
9164 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset);
9165 mask = 0;
9166 if (is_insn_ds_form (insn))
9167 mask = 3;
9168 else if (is_insn_dq_form (insn))
9169 mask = 15;
9170 else
9171 break;
9172 lobit = mask & (relocation + addend);
9173 if (lobit != 0)
9174 {
9175 addend -= lobit;
9176 info->callbacks->einfo
9177 (_("%P: %H: error: %s against `%s' not a multiple of %u\n"),
9178 input_bfd, input_section, rel->r_offset,
9179 howto->name, sym_name, mask + 1);
9180 bfd_set_error (bfd_error_bad_value);
9181 ret = FALSE;
9182 }
9183 addend += insn & mask;
9184 }
9185 break;
9186 }
9187
9188 #ifdef DEBUG
9189 fprintf (stderr, "\ttype = %s (%d), name = %s, symbol index = %ld, "
9190 "offset = %ld, addend = %ld\n",
9191 howto->name,
9192 (int) r_type,
9193 sym_name,
9194 r_symndx,
9195 (long) rel->r_offset,
9196 (long) addend);
9197 #endif
9198
9199 if (unresolved_reloc
9200 && !((input_section->flags & SEC_DEBUGGING) != 0
9201 && h->def_dynamic)
9202 && _bfd_elf_section_offset (output_bfd, info, input_section,
9203 rel->r_offset) != (bfd_vma) -1)
9204 {
9205 info->callbacks->einfo
9206 (_("%P: %H: unresolvable %s relocation against symbol `%s'\n"),
9207 input_bfd, input_section, rel->r_offset,
9208 howto->name,
9209 sym_name);
9210 ret = FALSE;
9211 }
9212
9213 /* 16-bit fields in insns mostly have signed values, but a
9214 few insns have 16-bit unsigned values. Really, we should
9215 have different reloc types. */
9216 if (howto->complain_on_overflow != complain_overflow_dont
9217 && howto->dst_mask == 0xffff
9218 && (input_section->flags & SEC_CODE) != 0)
9219 {
9220 enum complain_overflow complain = complain_overflow_signed;
9221
9222 if ((elf_section_flags (input_section) & SHF_PPC_VLE) == 0)
9223 {
9224 unsigned int insn;
9225
9226 insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
9227 if ((insn & (0x3f << 26)) == 10u << 26 /* cmpli */)
9228 complain = complain_overflow_bitfield;
9229 else if ((insn & (0x3f << 26)) == 28u << 26 /* andi */
9230 || (insn & (0x3f << 26)) == 24u << 26 /* ori */
9231 || (insn & (0x3f << 26)) == 26u << 26 /* xori */)
9232 complain = complain_overflow_unsigned;
9233 }
9234 if (howto->complain_on_overflow != complain)
9235 {
9236 alt_howto = *howto;
9237 alt_howto.complain_on_overflow = complain;
9238 howto = &alt_howto;
9239 }
9240 }
9241
9242 r = _bfd_final_link_relocate (howto, input_bfd, input_section, contents,
9243 rel->r_offset, relocation, addend);
9244
9245 if (r != bfd_reloc_ok)
9246 {
9247 if (r == bfd_reloc_overflow)
9248 {
9249 overflow:
9250 if (warned)
9251 continue;
9252 if (h != NULL
9253 && h->root.type == bfd_link_hash_undefweak
9254 && howto->pc_relative)
9255 {
9256 /* Assume this is a call protected by other code that
9257 detect the symbol is undefined. If this is the case,
9258 we can safely ignore the overflow. If not, the
9259 program is hosed anyway, and a little warning isn't
9260 going to help. */
9261
9262 continue;
9263 }
9264
9265 if (! (*info->callbacks->reloc_overflow) (info,
9266 (h ? &h->root : NULL),
9267 sym_name,
9268 howto->name,
9269 rel->r_addend,
9270 input_bfd,
9271 input_section,
9272 rel->r_offset))
9273 return FALSE;
9274 }
9275 else
9276 {
9277 info->callbacks->einfo
9278 (_("%P: %H: %s reloc against `%s': error %d\n"),
9279 input_bfd, input_section, rel->r_offset,
9280 howto->name, sym_name, (int) r);
9281 ret = FALSE;
9282 }
9283 }
9284 }
9285
9286 #ifdef DEBUG
9287 fprintf (stderr, "\n");
9288 #endif
9289
9290 if (input_section->sec_info_type == SEC_INFO_TYPE_TARGET
9291 && input_section->size != input_section->rawsize
9292 && (strcmp (input_section->output_section->name, ".init") == 0
9293 || strcmp (input_section->output_section->name, ".fini") == 0))
9294 {
9295 /* Branch around the trampolines. */
9296 unsigned int insn = B + input_section->size - input_section->rawsize;
9297 bfd_put_32 (input_bfd, insn, contents + input_section->rawsize);
9298 }
9299
9300 if (htab->params->ppc476_workaround
9301 && input_section->sec_info_type == SEC_INFO_TYPE_TARGET
9302 && (!info->relocatable
9303 || (input_section->output_section->alignment_power
9304 >= htab->params->pagesize_p2)))
9305 {
9306 struct ppc_elf_relax_info *relax_info;
9307 bfd_vma start_addr, end_addr, addr;
9308 bfd_vma pagesize = (bfd_vma) 1 << htab->params->pagesize_p2;
9309
9310 relax_info = elf_section_data (input_section)->sec_info;
9311 if (relax_info->workaround_size != 0)
9312 {
9313 bfd_byte *p;
9314 unsigned int n;
9315 bfd_byte fill[4];
9316
9317 bfd_put_32 (input_bfd, BA, fill);
9318 p = contents + input_section->size - relax_info->workaround_size;
9319 n = relax_info->workaround_size >> 2;
9320 while (n--)
9321 {
9322 memcpy (p, fill, 4);
9323 p += 4;
9324 }
9325 }
9326
9327 /* The idea is: Replace the last instruction on a page with a
9328 branch to a patch area. Put the insn there followed by a
9329 branch back to the next page. Complicated a little by
9330 needing to handle moved conditional branches, and by not
9331 wanting to touch data-in-text. */
9332
9333 start_addr = (input_section->output_section->vma
9334 + input_section->output_offset);
9335 end_addr = (start_addr + input_section->size
9336 - relax_info->workaround_size);
9337 for (addr = ((start_addr & -pagesize) + pagesize - 4);
9338 addr < end_addr;
9339 addr += pagesize)
9340 {
9341 bfd_vma offset = addr - start_addr;
9342 Elf_Internal_Rela *lo, *hi;
9343 bfd_boolean is_data;
9344 bfd_vma patch_off, patch_addr;
9345 unsigned int insn;
9346
9347 /* Do we have a data reloc at this offset? If so, leave
9348 the word alone. */
9349 is_data = FALSE;
9350 lo = relocs;
9351 hi = relend;
9352 rel = NULL;
9353 while (lo < hi)
9354 {
9355 rel = lo + (hi - lo) / 2;
9356 if (rel->r_offset < offset)
9357 lo = rel + 1;
9358 else if (rel->r_offset > offset + 3)
9359 hi = rel;
9360 else
9361 {
9362 switch (ELF32_R_TYPE (rel->r_info))
9363 {
9364 case R_PPC_ADDR32:
9365 case R_PPC_UADDR32:
9366 case R_PPC_REL32:
9367 case R_PPC_ADDR30:
9368 is_data = TRUE;
9369 break;
9370 default:
9371 break;
9372 }
9373 break;
9374 }
9375 }
9376 if (is_data)
9377 continue;
9378
9379 /* Some instructions can be left alone too. Unconditional
9380 branches, except for bcctr with BO=0x14 (bctr, bctrl),
9381 avoid the icache failure.
9382
9383 The problem occurs due to prefetch across a page boundary
9384 where stale instructions can be fetched from the next
9385 page, and the mechanism for flushing these bad
9386 instructions fails under certain circumstances. The
9387 unconditional branches:
9388 1) Branch: b, bl, ba, bla,
9389 2) Branch Conditional: bc, bca, bcl, bcla,
9390 3) Branch Conditional to Link Register: bclr, bclrl,
9391 where (2) and (3) have BO=0x14 making them unconditional,
9392 prevent the bad prefetch because the prefetch itself is
9393 affected by these instructions. This happens even if the
9394 instruction is not executed.
9395
9396 A bctr example:
9397 .
9398 . lis 9,new_page@ha
9399 . addi 9,9,new_page@l
9400 . mtctr 9
9401 . bctr
9402 . nop
9403 . nop
9404 . new_page:
9405 .
9406 The bctr is not predicted taken due to ctr not being
9407 ready, so prefetch continues on past the bctr into the
9408 new page which might have stale instructions. If they
9409 fail to be flushed, then they will be executed after the
9410 bctr executes. Either of the following modifications
9411 prevent the bad prefetch from happening in the first
9412 place:
9413 .
9414 . lis 9,new_page@ha lis 9,new_page@ha
9415 . addi 9,9,new_page@l addi 9,9,new_page@l
9416 . mtctr 9 mtctr 9
9417 . bctr bctr
9418 . nop b somewhere_else
9419 . b somewhere_else nop
9420 . new_page: new_page:
9421 . */
9422 insn = bfd_get_32 (input_bfd, contents + offset);
9423 if ((insn & (0x3f << 26)) == (18u << 26) /* b,bl,ba,bla */
9424 || ((insn & (0x3f << 26)) == (16u << 26) /* bc,bcl,bca,bcla*/
9425 && (insn & (0x14 << 21)) == (0x14 << 21)) /* with BO=0x14 */
9426 || ((insn & (0x3f << 26)) == (19u << 26)
9427 && (insn & (0x3ff << 1)) == (16u << 1) /* bclr,bclrl */
9428 && (insn & (0x14 << 21)) == (0x14 << 21)))/* with BO=0x14 */
9429 continue;
9430
9431 patch_addr = (start_addr + input_section->size
9432 - relax_info->workaround_size);
9433 patch_addr = (patch_addr + 15) & -16;
9434 patch_off = patch_addr - start_addr;
9435 bfd_put_32 (input_bfd, B + patch_off - offset, contents + offset);
9436
9437 if (rel != NULL
9438 && rel->r_offset >= offset
9439 && rel->r_offset < offset + 4)
9440 {
9441 /* If the insn we are patching had a reloc, adjust the
9442 reloc r_offset so that the reloc applies to the moved
9443 location. This matters for -r and --emit-relocs. */
9444 if (rel + 1 != relend)
9445 {
9446 Elf_Internal_Rela tmp = *rel;
9447
9448 /* Keep the relocs sorted by r_offset. */
9449 memmove (rel, rel + 1, (relend - (rel + 1)) * sizeof (*rel));
9450 relend[-1] = tmp;
9451 }
9452 relend[-1].r_offset += patch_off - offset;
9453 }
9454 else
9455 rel = NULL;
9456
9457 if ((insn & (0x3f << 26)) == (16u << 26) /* bc */
9458 && (insn & 2) == 0 /* relative */)
9459 {
9460 bfd_vma delta = ((insn & 0xfffc) ^ 0x8000) - 0x8000;
9461
9462 delta += offset - patch_off;
9463 if (info->relocatable && rel != NULL)
9464 delta = 0;
9465 if (!info->relocatable && rel != NULL)
9466 {
9467 enum elf_ppc_reloc_type r_type;
9468
9469 r_type = ELF32_R_TYPE (relend[-1].r_info);
9470 if (r_type == R_PPC_REL14_BRTAKEN)
9471 insn |= BRANCH_PREDICT_BIT;
9472 else if (r_type == R_PPC_REL14_BRNTAKEN)
9473 insn &= ~BRANCH_PREDICT_BIT;
9474 else
9475 BFD_ASSERT (r_type == R_PPC_REL14);
9476
9477 if ((r_type == R_PPC_REL14_BRTAKEN
9478 || r_type == R_PPC_REL14_BRNTAKEN)
9479 && delta + 0x8000 < 0x10000
9480 && (bfd_signed_vma) delta < 0)
9481 insn ^= BRANCH_PREDICT_BIT;
9482 }
9483 if (delta + 0x8000 < 0x10000)
9484 {
9485 bfd_put_32 (input_bfd,
9486 (insn & ~0xfffc) | (delta & 0xfffc),
9487 contents + patch_off);
9488 patch_off += 4;
9489 bfd_put_32 (input_bfd,
9490 B | ((offset + 4 - patch_off) & 0x3fffffc),
9491 contents + patch_off);
9492 patch_off += 4;
9493 }
9494 else
9495 {
9496 if (rel != NULL)
9497 {
9498 unsigned int r_sym = ELF32_R_SYM (relend[-1].r_info);
9499
9500 relend[-1].r_offset += 8;
9501 relend[-1].r_info = ELF32_R_INFO (r_sym, R_PPC_REL24);
9502 }
9503 bfd_put_32 (input_bfd,
9504 (insn & ~0xfffc) | 8,
9505 contents + patch_off);
9506 patch_off += 4;
9507 bfd_put_32 (input_bfd,
9508 B | ((offset + 4 - patch_off) & 0x3fffffc),
9509 contents + patch_off);
9510 patch_off += 4;
9511 bfd_put_32 (input_bfd,
9512 B | ((delta - 8) & 0x3fffffc),
9513 contents + patch_off);
9514 patch_off += 4;
9515 }
9516 }
9517 else
9518 {
9519 bfd_put_32 (input_bfd, insn, contents + patch_off);
9520 patch_off += 4;
9521 bfd_put_32 (input_bfd,
9522 B | ((offset + 4 - patch_off) & 0x3fffffc),
9523 contents + patch_off);
9524 patch_off += 4;
9525 }
9526 BFD_ASSERT (patch_off <= input_section->size);
9527 relax_info->workaround_size = input_section->size - patch_off;
9528 }
9529 }
9530
9531 return ret;
9532 }
9533 \f
9534 /* Finish up dynamic symbol handling. We set the contents of various
9535 dynamic sections here. */
9536
9537 static bfd_boolean
9538 ppc_elf_finish_dynamic_symbol (bfd *output_bfd,
9539 struct bfd_link_info *info,
9540 struct elf_link_hash_entry *h,
9541 Elf_Internal_Sym *sym)
9542 {
9543 struct ppc_elf_link_hash_table *htab;
9544 struct plt_entry *ent;
9545 bfd_boolean doneone;
9546
9547 #ifdef DEBUG
9548 fprintf (stderr, "ppc_elf_finish_dynamic_symbol called for %s",
9549 h->root.root.string);
9550 #endif
9551
9552 htab = ppc_elf_hash_table (info);
9553 BFD_ASSERT (htab->elf.dynobj != NULL);
9554
9555 doneone = FALSE;
9556 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
9557 if (ent->plt.offset != (bfd_vma) -1)
9558 {
9559 if (!doneone)
9560 {
9561 Elf_Internal_Rela rela;
9562 bfd_byte *loc;
9563 bfd_vma reloc_index;
9564
9565 if (htab->plt_type == PLT_NEW
9566 || !htab->elf.dynamic_sections_created
9567 || h->dynindx == -1)
9568 reloc_index = ent->plt.offset / 4;
9569 else
9570 {
9571 reloc_index = ((ent->plt.offset - htab->plt_initial_entry_size)
9572 / htab->plt_slot_size);
9573 if (reloc_index > PLT_NUM_SINGLE_ENTRIES
9574 && htab->plt_type == PLT_OLD)
9575 reloc_index -= (reloc_index - PLT_NUM_SINGLE_ENTRIES) / 2;
9576 }
9577
9578 /* This symbol has an entry in the procedure linkage table.
9579 Set it up. */
9580 if (htab->plt_type == PLT_VXWORKS
9581 && htab->elf.dynamic_sections_created
9582 && h->dynindx != -1)
9583 {
9584 bfd_vma got_offset;
9585 const bfd_vma *plt_entry;
9586
9587 /* The first three entries in .got.plt are reserved. */
9588 got_offset = (reloc_index + 3) * 4;
9589
9590 /* Use the right PLT. */
9591 plt_entry = info->shared ? ppc_elf_vxworks_pic_plt_entry
9592 : ppc_elf_vxworks_plt_entry;
9593
9594 /* Fill in the .plt on VxWorks. */
9595 if (info->shared)
9596 {
9597 bfd_put_32 (output_bfd,
9598 plt_entry[0] | PPC_HA (got_offset),
9599 htab->plt->contents + ent->plt.offset + 0);
9600 bfd_put_32 (output_bfd,
9601 plt_entry[1] | PPC_LO (got_offset),
9602 htab->plt->contents + ent->plt.offset + 4);
9603 }
9604 else
9605 {
9606 bfd_vma got_loc = got_offset + SYM_VAL (htab->elf.hgot);
9607
9608 bfd_put_32 (output_bfd,
9609 plt_entry[0] | PPC_HA (got_loc),
9610 htab->plt->contents + ent->plt.offset + 0);
9611 bfd_put_32 (output_bfd,
9612 plt_entry[1] | PPC_LO (got_loc),
9613 htab->plt->contents + ent->plt.offset + 4);
9614 }
9615
9616 bfd_put_32 (output_bfd, plt_entry[2],
9617 htab->plt->contents + ent->plt.offset + 8);
9618 bfd_put_32 (output_bfd, plt_entry[3],
9619 htab->plt->contents + ent->plt.offset + 12);
9620
9621 /* This instruction is an immediate load. The value loaded is
9622 the byte offset of the R_PPC_JMP_SLOT relocation from the
9623 start of the .rela.plt section. The value is stored in the
9624 low-order 16 bits of the load instruction. */
9625 /* NOTE: It appears that this is now an index rather than a
9626 prescaled offset. */
9627 bfd_put_32 (output_bfd,
9628 plt_entry[4] | reloc_index,
9629 htab->plt->contents + ent->plt.offset + 16);
9630 /* This instruction is a PC-relative branch whose target is
9631 the start of the PLT section. The address of this branch
9632 instruction is 20 bytes beyond the start of this PLT entry.
9633 The address is encoded in bits 6-29, inclusive. The value
9634 stored is right-shifted by two bits, permitting a 26-bit
9635 offset. */
9636 bfd_put_32 (output_bfd,
9637 (plt_entry[5]
9638 | (-(ent->plt.offset + 20) & 0x03fffffc)),
9639 htab->plt->contents + ent->plt.offset + 20);
9640 bfd_put_32 (output_bfd, plt_entry[6],
9641 htab->plt->contents + ent->plt.offset + 24);
9642 bfd_put_32 (output_bfd, plt_entry[7],
9643 htab->plt->contents + ent->plt.offset + 28);
9644
9645 /* Fill in the GOT entry corresponding to this PLT slot with
9646 the address immediately after the "bctr" instruction
9647 in this PLT entry. */
9648 bfd_put_32 (output_bfd, (htab->plt->output_section->vma
9649 + htab->plt->output_offset
9650 + ent->plt.offset + 16),
9651 htab->sgotplt->contents + got_offset);
9652
9653 if (!info->shared)
9654 {
9655 /* Fill in a couple of entries in .rela.plt.unloaded. */
9656 loc = htab->srelplt2->contents
9657 + ((VXWORKS_PLTRESOLVE_RELOCS + reloc_index
9658 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS)
9659 * sizeof (Elf32_External_Rela));
9660
9661 /* Provide the @ha relocation for the first instruction. */
9662 rela.r_offset = (htab->plt->output_section->vma
9663 + htab->plt->output_offset
9664 + ent->plt.offset + 2);
9665 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
9666 R_PPC_ADDR16_HA);
9667 rela.r_addend = got_offset;
9668 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
9669 loc += sizeof (Elf32_External_Rela);
9670
9671 /* Provide the @l relocation for the second instruction. */
9672 rela.r_offset = (htab->plt->output_section->vma
9673 + htab->plt->output_offset
9674 + ent->plt.offset + 6);
9675 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
9676 R_PPC_ADDR16_LO);
9677 rela.r_addend = got_offset;
9678 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
9679 loc += sizeof (Elf32_External_Rela);
9680
9681 /* Provide a relocation for the GOT entry corresponding to this
9682 PLT slot. Point it at the middle of the .plt entry. */
9683 rela.r_offset = (htab->sgotplt->output_section->vma
9684 + htab->sgotplt->output_offset
9685 + got_offset);
9686 rela.r_info = ELF32_R_INFO (htab->elf.hplt->indx,
9687 R_PPC_ADDR32);
9688 rela.r_addend = ent->plt.offset + 16;
9689 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
9690 }
9691
9692 /* VxWorks uses non-standard semantics for R_PPC_JMP_SLOT.
9693 In particular, the offset for the relocation is not the
9694 address of the PLT entry for this function, as specified
9695 by the ABI. Instead, the offset is set to the address of
9696 the GOT slot for this function. See EABI 4.4.4.1. */
9697 rela.r_offset = (htab->sgotplt->output_section->vma
9698 + htab->sgotplt->output_offset
9699 + got_offset);
9700
9701 }
9702 else
9703 {
9704 asection *splt = htab->plt;
9705 if (!htab->elf.dynamic_sections_created
9706 || h->dynindx == -1)
9707 splt = htab->iplt;
9708
9709 rela.r_offset = (splt->output_section->vma
9710 + splt->output_offset
9711 + ent->plt.offset);
9712 if (htab->plt_type == PLT_OLD
9713 || !htab->elf.dynamic_sections_created
9714 || h->dynindx == -1)
9715 {
9716 /* We don't need to fill in the .plt. The ppc dynamic
9717 linker will fill it in. */
9718 }
9719 else
9720 {
9721 bfd_vma val = (htab->glink_pltresolve + ent->plt.offset
9722 + htab->glink->output_section->vma
9723 + htab->glink->output_offset);
9724 bfd_put_32 (output_bfd, val,
9725 splt->contents + ent->plt.offset);
9726 }
9727 }
9728
9729 /* Fill in the entry in the .rela.plt section. */
9730 rela.r_addend = 0;
9731 if (!htab->elf.dynamic_sections_created
9732 || h->dynindx == -1)
9733 {
9734 BFD_ASSERT (h->type == STT_GNU_IFUNC
9735 && h->def_regular
9736 && (h->root.type == bfd_link_hash_defined
9737 || h->root.type == bfd_link_hash_defweak));
9738 rela.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
9739 rela.r_addend = SYM_VAL (h);
9740 }
9741 else
9742 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_JMP_SLOT);
9743
9744 if (!htab->elf.dynamic_sections_created
9745 || h->dynindx == -1)
9746 loc = (htab->reliplt->contents
9747 + (htab->reliplt->reloc_count++
9748 * sizeof (Elf32_External_Rela)));
9749 else
9750 loc = (htab->relplt->contents
9751 + reloc_index * sizeof (Elf32_External_Rela));
9752 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
9753
9754 if (!h->def_regular)
9755 {
9756 /* Mark the symbol as undefined, rather than as
9757 defined in the .plt section. Leave the value if
9758 there were any relocations where pointer equality
9759 matters (this is a clue for the dynamic linker, to
9760 make function pointer comparisons work between an
9761 application and shared library), otherwise set it
9762 to zero. */
9763 sym->st_shndx = SHN_UNDEF;
9764 if (!h->pointer_equality_needed)
9765 sym->st_value = 0;
9766 else if (!h->ref_regular_nonweak)
9767 {
9768 /* This breaks function pointer comparisons, but
9769 that is better than breaking tests for a NULL
9770 function pointer. */
9771 sym->st_value = 0;
9772 }
9773 }
9774 else if (h->type == STT_GNU_IFUNC
9775 && !info->shared)
9776 {
9777 /* Set the value of ifunc symbols in a non-pie
9778 executable to the glink entry. This is to avoid
9779 text relocations. We can't do this for ifunc in
9780 allocate_dynrelocs, as we do for normal dynamic
9781 function symbols with plt entries, because we need
9782 to keep the original value around for the ifunc
9783 relocation. */
9784 sym->st_shndx = (_bfd_elf_section_from_bfd_section
9785 (output_bfd, htab->glink->output_section));
9786 sym->st_value = (ent->glink_offset
9787 + htab->glink->output_offset
9788 + htab->glink->output_section->vma);
9789 }
9790 doneone = TRUE;
9791 }
9792
9793 if (htab->plt_type == PLT_NEW
9794 || !htab->elf.dynamic_sections_created
9795 || h->dynindx == -1)
9796 {
9797 unsigned char *p;
9798 asection *splt = htab->plt;
9799 if (!htab->elf.dynamic_sections_created
9800 || h->dynindx == -1)
9801 splt = htab->iplt;
9802
9803 p = (unsigned char *) htab->glink->contents + ent->glink_offset;
9804
9805 if (h == htab->tls_get_addr && !htab->params->no_tls_get_addr_opt)
9806 {
9807 bfd_put_32 (output_bfd, LWZ_11_3, p);
9808 p += 4;
9809 bfd_put_32 (output_bfd, LWZ_12_3 + 4, p);
9810 p += 4;
9811 bfd_put_32 (output_bfd, MR_0_3, p);
9812 p += 4;
9813 bfd_put_32 (output_bfd, CMPWI_11_0, p);
9814 p += 4;
9815 bfd_put_32 (output_bfd, ADD_3_12_2, p);
9816 p += 4;
9817 bfd_put_32 (output_bfd, BEQLR, p);
9818 p += 4;
9819 bfd_put_32 (output_bfd, MR_3_0, p);
9820 p += 4;
9821 bfd_put_32 (output_bfd, NOP, p);
9822 p += 4;
9823 }
9824
9825 write_glink_stub (ent, splt, p, info);
9826
9827 if (!info->shared)
9828 /* We only need one non-PIC glink stub. */
9829 break;
9830 }
9831 else
9832 break;
9833 }
9834
9835 if (h->needs_copy)
9836 {
9837 asection *s;
9838 Elf_Internal_Rela rela;
9839 bfd_byte *loc;
9840
9841 /* This symbols needs a copy reloc. Set it up. */
9842
9843 #ifdef DEBUG
9844 fprintf (stderr, ", copy");
9845 #endif
9846
9847 BFD_ASSERT (h->dynindx != -1);
9848
9849 if (ppc_elf_hash_entry (h)->has_sda_refs)
9850 s = htab->relsbss;
9851 else
9852 s = htab->relbss;
9853 BFD_ASSERT (s != NULL);
9854
9855 rela.r_offset = SYM_VAL (h);
9856 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_COPY);
9857 rela.r_addend = 0;
9858 loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
9859 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
9860 }
9861
9862 #ifdef DEBUG
9863 fprintf (stderr, "\n");
9864 #endif
9865
9866 return TRUE;
9867 }
9868 \f
9869 static enum elf_reloc_type_class
9870 ppc_elf_reloc_type_class (const struct bfd_link_info *info,
9871 const asection *rel_sec,
9872 const Elf_Internal_Rela *rela)
9873 {
9874 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
9875
9876 if (rel_sec == htab->reliplt)
9877 return reloc_class_ifunc;
9878
9879 switch (ELF32_R_TYPE (rela->r_info))
9880 {
9881 case R_PPC_RELATIVE:
9882 return reloc_class_relative;
9883 case R_PPC_JMP_SLOT:
9884 return reloc_class_plt;
9885 case R_PPC_COPY:
9886 return reloc_class_copy;
9887 default:
9888 return reloc_class_normal;
9889 }
9890 }
9891 \f
9892 /* Finish up the dynamic sections. */
9893
9894 static bfd_boolean
9895 ppc_elf_finish_dynamic_sections (bfd *output_bfd,
9896 struct bfd_link_info *info)
9897 {
9898 asection *sdyn;
9899 asection *splt;
9900 struct ppc_elf_link_hash_table *htab;
9901 bfd_vma got;
9902 bfd *dynobj;
9903 bfd_boolean ret = TRUE;
9904
9905 #ifdef DEBUG
9906 fprintf (stderr, "ppc_elf_finish_dynamic_sections called\n");
9907 #endif
9908
9909 htab = ppc_elf_hash_table (info);
9910 dynobj = elf_hash_table (info)->dynobj;
9911 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
9912 if (htab->is_vxworks)
9913 splt = bfd_get_linker_section (dynobj, ".plt");
9914 else
9915 splt = NULL;
9916
9917 got = 0;
9918 if (htab->elf.hgot != NULL)
9919 got = SYM_VAL (htab->elf.hgot);
9920
9921 if (htab->elf.dynamic_sections_created)
9922 {
9923 Elf32_External_Dyn *dyncon, *dynconend;
9924
9925 BFD_ASSERT (htab->plt != NULL && sdyn != NULL);
9926
9927 dyncon = (Elf32_External_Dyn *) sdyn->contents;
9928 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
9929 for (; dyncon < dynconend; dyncon++)
9930 {
9931 Elf_Internal_Dyn dyn;
9932 asection *s;
9933
9934 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
9935
9936 switch (dyn.d_tag)
9937 {
9938 case DT_PLTGOT:
9939 if (htab->is_vxworks)
9940 s = htab->sgotplt;
9941 else
9942 s = htab->plt;
9943 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
9944 break;
9945
9946 case DT_PLTRELSZ:
9947 dyn.d_un.d_val = htab->relplt->size;
9948 break;
9949
9950 case DT_JMPREL:
9951 s = htab->relplt;
9952 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
9953 break;
9954
9955 case DT_PPC_GOT:
9956 dyn.d_un.d_ptr = got;
9957 break;
9958
9959 case DT_RELASZ:
9960 if (htab->is_vxworks)
9961 {
9962 if (htab->relplt)
9963 dyn.d_un.d_ptr -= htab->relplt->size;
9964 break;
9965 }
9966 continue;
9967
9968 default:
9969 if (htab->is_vxworks
9970 && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn))
9971 break;
9972 continue;
9973 }
9974
9975 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
9976 }
9977 }
9978
9979 if (htab->got != NULL)
9980 {
9981 if (htab->elf.hgot->root.u.def.section == htab->got
9982 || htab->elf.hgot->root.u.def.section == htab->sgotplt)
9983 {
9984 unsigned char *p = htab->elf.hgot->root.u.def.section->contents;
9985
9986 p += htab->elf.hgot->root.u.def.value;
9987 if (htab->plt_type == PLT_OLD)
9988 {
9989 /* Add a blrl instruction at _GLOBAL_OFFSET_TABLE_-4
9990 so that a function can easily find the address of
9991 _GLOBAL_OFFSET_TABLE_. */
9992 BFD_ASSERT (htab->elf.hgot->root.u.def.value - 4
9993 < htab->elf.hgot->root.u.def.section->size);
9994 bfd_put_32 (output_bfd, 0x4e800021, p - 4);
9995 }
9996
9997 if (sdyn != NULL)
9998 {
9999 bfd_vma val = sdyn->output_section->vma + sdyn->output_offset;
10000 BFD_ASSERT (htab->elf.hgot->root.u.def.value
10001 < htab->elf.hgot->root.u.def.section->size);
10002 bfd_put_32 (output_bfd, val, p);
10003 }
10004 }
10005 else
10006 {
10007 info->callbacks->einfo (_("%P: %s not defined in linker created %s\n"),
10008 htab->elf.hgot->root.root.string,
10009 (htab->sgotplt != NULL
10010 ? htab->sgotplt->name : htab->got->name));
10011 bfd_set_error (bfd_error_bad_value);
10012 ret = FALSE;
10013 }
10014
10015 elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 4;
10016 }
10017
10018 /* Fill in the first entry in the VxWorks procedure linkage table. */
10019 if (splt && splt->size > 0)
10020 {
10021 /* Use the right PLT. */
10022 const bfd_vma *plt_entry = (info->shared
10023 ? ppc_elf_vxworks_pic_plt0_entry
10024 : ppc_elf_vxworks_plt0_entry);
10025
10026 if (!info->shared)
10027 {
10028 bfd_vma got_value = SYM_VAL (htab->elf.hgot);
10029
10030 bfd_put_32 (output_bfd, plt_entry[0] | PPC_HA (got_value),
10031 splt->contents + 0);
10032 bfd_put_32 (output_bfd, plt_entry[1] | PPC_LO (got_value),
10033 splt->contents + 4);
10034 }
10035 else
10036 {
10037 bfd_put_32 (output_bfd, plt_entry[0], splt->contents + 0);
10038 bfd_put_32 (output_bfd, plt_entry[1], splt->contents + 4);
10039 }
10040 bfd_put_32 (output_bfd, plt_entry[2], splt->contents + 8);
10041 bfd_put_32 (output_bfd, plt_entry[3], splt->contents + 12);
10042 bfd_put_32 (output_bfd, plt_entry[4], splt->contents + 16);
10043 bfd_put_32 (output_bfd, plt_entry[5], splt->contents + 20);
10044 bfd_put_32 (output_bfd, plt_entry[6], splt->contents + 24);
10045 bfd_put_32 (output_bfd, plt_entry[7], splt->contents + 28);
10046
10047 if (! info->shared)
10048 {
10049 Elf_Internal_Rela rela;
10050 bfd_byte *loc;
10051
10052 loc = htab->srelplt2->contents;
10053
10054 /* Output the @ha relocation for the first instruction. */
10055 rela.r_offset = (htab->plt->output_section->vma
10056 + htab->plt->output_offset
10057 + 2);
10058 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
10059 rela.r_addend = 0;
10060 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10061 loc += sizeof (Elf32_External_Rela);
10062
10063 /* Output the @l relocation for the second instruction. */
10064 rela.r_offset = (htab->plt->output_section->vma
10065 + htab->plt->output_offset
10066 + 6);
10067 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
10068 rela.r_addend = 0;
10069 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10070 loc += sizeof (Elf32_External_Rela);
10071
10072 /* Fix up the remaining relocations. They may have the wrong
10073 symbol index for _G_O_T_ or _P_L_T_ depending on the order
10074 in which symbols were output. */
10075 while (loc < htab->srelplt2->contents + htab->srelplt2->size)
10076 {
10077 Elf_Internal_Rela rel;
10078
10079 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
10080 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
10081 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
10082 loc += sizeof (Elf32_External_Rela);
10083
10084 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
10085 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
10086 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
10087 loc += sizeof (Elf32_External_Rela);
10088
10089 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
10090 rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_PPC_ADDR32);
10091 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
10092 loc += sizeof (Elf32_External_Rela);
10093 }
10094 }
10095 }
10096
10097 if (htab->glink != NULL
10098 && htab->glink->contents != NULL
10099 && htab->elf.dynamic_sections_created)
10100 {
10101 unsigned char *p;
10102 unsigned char *endp;
10103 bfd_vma res0;
10104 unsigned int i;
10105
10106 /*
10107 * PIC glink code is the following:
10108 *
10109 * # ith PLT code stub.
10110 * addis 11,30,(plt+(i-1)*4-got)@ha
10111 * lwz 11,(plt+(i-1)*4-got)@l(11)
10112 * mtctr 11
10113 * bctr
10114 *
10115 * # A table of branches, one for each plt entry.
10116 * # The idea is that the plt call stub loads ctr and r11 with these
10117 * # addresses, so (r11 - res_0) gives the plt index * 4.
10118 * res_0: b PLTresolve
10119 * res_1: b PLTresolve
10120 * .
10121 * # Some number of entries towards the end can be nops
10122 * res_n_m3: nop
10123 * res_n_m2: nop
10124 * res_n_m1:
10125 *
10126 * PLTresolve:
10127 * addis 11,11,(1f-res_0)@ha
10128 * mflr 0
10129 * bcl 20,31,1f
10130 * 1: addi 11,11,(1b-res_0)@l
10131 * mflr 12
10132 * mtlr 0
10133 * sub 11,11,12 # r11 = index * 4
10134 * addis 12,12,(got+4-1b)@ha
10135 * lwz 0,(got+4-1b)@l(12) # got[1] address of dl_runtime_resolve
10136 * lwz 12,(got+8-1b)@l(12) # got[2] contains the map address
10137 * mtctr 0
10138 * add 0,11,11
10139 * add 11,0,11 # r11 = index * 12 = reloc offset.
10140 * bctr
10141 */
10142 static const unsigned int pic_plt_resolve[] =
10143 {
10144 ADDIS_11_11,
10145 MFLR_0,
10146 BCL_20_31,
10147 ADDI_11_11,
10148 MFLR_12,
10149 MTLR_0,
10150 SUB_11_11_12,
10151 ADDIS_12_12,
10152 LWZ_0_12,
10153 LWZ_12_12,
10154 MTCTR_0,
10155 ADD_0_11_11,
10156 ADD_11_0_11,
10157 BCTR,
10158 NOP,
10159 NOP
10160 };
10161
10162 /*
10163 * Non-PIC glink code is a little simpler.
10164 *
10165 * # ith PLT code stub.
10166 * lis 11,(plt+(i-1)*4)@ha
10167 * lwz 11,(plt+(i-1)*4)@l(11)
10168 * mtctr 11
10169 * bctr
10170 *
10171 * The branch table is the same, then comes
10172 *
10173 * PLTresolve:
10174 * lis 12,(got+4)@ha
10175 * addis 11,11,(-res_0)@ha
10176 * lwz 0,(got+4)@l(12) # got[1] address of dl_runtime_resolve
10177 * addi 11,11,(-res_0)@l # r11 = index * 4
10178 * mtctr 0
10179 * add 0,11,11
10180 * lwz 12,(got+8)@l(12) # got[2] contains the map address
10181 * add 11,0,11 # r11 = index * 12 = reloc offset.
10182 * bctr
10183 */
10184 static const unsigned int plt_resolve[] =
10185 {
10186 LIS_12,
10187 ADDIS_11_11,
10188 LWZ_0_12,
10189 ADDI_11_11,
10190 MTCTR_0,
10191 ADD_0_11_11,
10192 LWZ_12_12,
10193 ADD_11_0_11,
10194 BCTR,
10195 NOP,
10196 NOP,
10197 NOP,
10198 NOP,
10199 NOP,
10200 NOP,
10201 NOP
10202 };
10203
10204 if (ARRAY_SIZE (pic_plt_resolve) != GLINK_PLTRESOLVE / 4)
10205 abort ();
10206 if (ARRAY_SIZE (plt_resolve) != GLINK_PLTRESOLVE / 4)
10207 abort ();
10208
10209 /* Build the branch table, one for each plt entry (less one),
10210 and perhaps some padding. */
10211 p = htab->glink->contents;
10212 p += htab->glink_pltresolve;
10213 endp = htab->glink->contents;
10214 endp += htab->glink->size - GLINK_PLTRESOLVE;
10215 while (p < endp - (htab->params->ppc476_workaround ? 0 : 8 * 4))
10216 {
10217 bfd_put_32 (output_bfd, B + endp - p, p);
10218 p += 4;
10219 }
10220 while (p < endp)
10221 {
10222 bfd_put_32 (output_bfd, NOP, p);
10223 p += 4;
10224 }
10225
10226 res0 = (htab->glink_pltresolve
10227 + htab->glink->output_section->vma
10228 + htab->glink->output_offset);
10229
10230 if (htab->params->ppc476_workaround)
10231 {
10232 /* Ensure that a call stub at the end of a page doesn't
10233 result in prefetch over the end of the page into the
10234 glink branch table. */
10235 bfd_vma pagesize = (bfd_vma) 1 << htab->params->pagesize_p2;
10236 bfd_vma page_addr;
10237 bfd_vma glink_start = (htab->glink->output_section->vma
10238 + htab->glink->output_offset);
10239
10240 for (page_addr = res0 & -pagesize;
10241 page_addr > glink_start;
10242 page_addr -= pagesize)
10243 {
10244 /* We have a plt call stub that may need fixing. */
10245 bfd_byte *loc;
10246 unsigned int insn;
10247
10248 loc = htab->glink->contents + page_addr - 4 - glink_start;
10249 insn = bfd_get_32 (output_bfd, loc);
10250 if (insn == BCTR)
10251 {
10252 /* By alignment, we know that there must be at least
10253 one other call stub before this one. */
10254 insn = bfd_get_32 (output_bfd, loc - 16);
10255 if (insn == BCTR)
10256 bfd_put_32 (output_bfd, B | (-16 & 0x3fffffc), loc);
10257 else
10258 bfd_put_32 (output_bfd, B | (-20 & 0x3fffffc), loc);
10259 }
10260 }
10261 }
10262
10263 /* Last comes the PLTresolve stub. */
10264 if (info->shared)
10265 {
10266 bfd_vma bcl;
10267
10268 for (i = 0; i < ARRAY_SIZE (pic_plt_resolve); i++)
10269 {
10270 unsigned int insn = pic_plt_resolve[i];
10271
10272 if (htab->params->ppc476_workaround && insn == NOP)
10273 insn = BA + 0;
10274 bfd_put_32 (output_bfd, insn, p);
10275 p += 4;
10276 }
10277 p -= 4 * ARRAY_SIZE (pic_plt_resolve);
10278
10279 bcl = (htab->glink->size - GLINK_PLTRESOLVE + 3*4
10280 + htab->glink->output_section->vma
10281 + htab->glink->output_offset);
10282
10283 bfd_put_32 (output_bfd,
10284 ADDIS_11_11 + PPC_HA (bcl - res0), p + 0*4);
10285 bfd_put_32 (output_bfd,
10286 ADDI_11_11 + PPC_LO (bcl - res0), p + 3*4);
10287 bfd_put_32 (output_bfd,
10288 ADDIS_12_12 + PPC_HA (got + 4 - bcl), p + 7*4);
10289 if (PPC_HA (got + 4 - bcl) == PPC_HA (got + 8 - bcl))
10290 {
10291 bfd_put_32 (output_bfd,
10292 LWZ_0_12 + PPC_LO (got + 4 - bcl), p + 8*4);
10293 bfd_put_32 (output_bfd,
10294 LWZ_12_12 + PPC_LO (got + 8 - bcl), p + 9*4);
10295 }
10296 else
10297 {
10298 bfd_put_32 (output_bfd,
10299 LWZU_0_12 + PPC_LO (got + 4 - bcl), p + 8*4);
10300 bfd_put_32 (output_bfd,
10301 LWZ_12_12 + 4, p + 9*4);
10302 }
10303 }
10304 else
10305 {
10306 for (i = 0; i < ARRAY_SIZE (plt_resolve); i++)
10307 {
10308 unsigned int insn = plt_resolve[i];
10309
10310 if (htab->params->ppc476_workaround && insn == NOP)
10311 insn = BA + 0;
10312 bfd_put_32 (output_bfd, insn, p);
10313 p += 4;
10314 }
10315 p -= 4 * ARRAY_SIZE (plt_resolve);
10316
10317 bfd_put_32 (output_bfd,
10318 LIS_12 + PPC_HA (got + 4), p + 0*4);
10319 bfd_put_32 (output_bfd,
10320 ADDIS_11_11 + PPC_HA (-res0), p + 1*4);
10321 bfd_put_32 (output_bfd,
10322 ADDI_11_11 + PPC_LO (-res0), p + 3*4);
10323 if (PPC_HA (got + 4) == PPC_HA (got + 8))
10324 {
10325 bfd_put_32 (output_bfd,
10326 LWZ_0_12 + PPC_LO (got + 4), p + 2*4);
10327 bfd_put_32 (output_bfd,
10328 LWZ_12_12 + PPC_LO (got + 8), p + 6*4);
10329 }
10330 else
10331 {
10332 bfd_put_32 (output_bfd,
10333 LWZU_0_12 + PPC_LO (got + 4), p + 2*4);
10334 bfd_put_32 (output_bfd,
10335 LWZ_12_12 + 4, p + 6*4);
10336 }
10337 }
10338 }
10339
10340 if (htab->glink_eh_frame != NULL
10341 && htab->glink_eh_frame->contents != NULL)
10342 {
10343 unsigned char *p = htab->glink_eh_frame->contents;
10344 bfd_vma val;
10345
10346 p += sizeof (glink_eh_frame_cie);
10347 /* FDE length. */
10348 p += 4;
10349 /* CIE pointer. */
10350 p += 4;
10351 /* Offset to .glink. */
10352 val = (htab->glink->output_section->vma
10353 + htab->glink->output_offset);
10354 val -= (htab->glink_eh_frame->output_section->vma
10355 + htab->glink_eh_frame->output_offset);
10356 val -= p - htab->glink_eh_frame->contents;
10357 bfd_put_32 (htab->elf.dynobj, val, p);
10358
10359 if (htab->glink_eh_frame->sec_info_type == SEC_INFO_TYPE_EH_FRAME
10360 && !_bfd_elf_write_section_eh_frame (output_bfd, info,
10361 htab->glink_eh_frame,
10362 htab->glink_eh_frame->contents))
10363 return FALSE;
10364 }
10365
10366 return ret;
10367 }
10368 \f
10369 #define TARGET_LITTLE_SYM powerpc_elf32_le_vec
10370 #define TARGET_LITTLE_NAME "elf32-powerpcle"
10371 #define TARGET_BIG_SYM powerpc_elf32_vec
10372 #define TARGET_BIG_NAME "elf32-powerpc"
10373 #define ELF_ARCH bfd_arch_powerpc
10374 #define ELF_TARGET_ID PPC32_ELF_DATA
10375 #define ELF_MACHINE_CODE EM_PPC
10376 #ifdef __QNXTARGET__
10377 #define ELF_MAXPAGESIZE 0x1000
10378 #define ELF_COMMONPAGESIZE 0x1000
10379 #else
10380 #define ELF_MAXPAGESIZE 0x10000
10381 #define ELF_COMMONPAGESIZE 0x10000
10382 #endif
10383 #define ELF_MINPAGESIZE 0x1000
10384 #define elf_info_to_howto ppc_elf_info_to_howto
10385
10386 #ifdef EM_CYGNUS_POWERPC
10387 #define ELF_MACHINE_ALT1 EM_CYGNUS_POWERPC
10388 #endif
10389
10390 #ifdef EM_PPC_OLD
10391 #define ELF_MACHINE_ALT2 EM_PPC_OLD
10392 #endif
10393
10394 #define elf_backend_plt_not_loaded 1
10395 #define elf_backend_can_gc_sections 1
10396 #define elf_backend_can_refcount 1
10397 #define elf_backend_rela_normal 1
10398 #define elf_backend_caches_rawsize 1
10399
10400 #define bfd_elf32_mkobject ppc_elf_mkobject
10401 #define bfd_elf32_bfd_merge_private_bfd_data ppc_elf_merge_private_bfd_data
10402 #define bfd_elf32_bfd_relax_section ppc_elf_relax_section
10403 #define bfd_elf32_bfd_reloc_type_lookup ppc_elf_reloc_type_lookup
10404 #define bfd_elf32_bfd_reloc_name_lookup ppc_elf_reloc_name_lookup
10405 #define bfd_elf32_bfd_set_private_flags ppc_elf_set_private_flags
10406 #define bfd_elf32_bfd_link_hash_table_create ppc_elf_link_hash_table_create
10407 #define bfd_elf32_get_synthetic_symtab ppc_elf_get_synthetic_symtab
10408
10409 #define elf_backend_object_p ppc_elf_object_p
10410 #define elf_backend_gc_mark_hook ppc_elf_gc_mark_hook
10411 #define elf_backend_gc_sweep_hook ppc_elf_gc_sweep_hook
10412 #define elf_backend_section_from_shdr ppc_elf_section_from_shdr
10413 #define elf_backend_relocate_section ppc_elf_relocate_section
10414 #define elf_backend_create_dynamic_sections ppc_elf_create_dynamic_sections
10415 #define elf_backend_check_relocs ppc_elf_check_relocs
10416 #define elf_backend_copy_indirect_symbol ppc_elf_copy_indirect_symbol
10417 #define elf_backend_adjust_dynamic_symbol ppc_elf_adjust_dynamic_symbol
10418 #define elf_backend_add_symbol_hook ppc_elf_add_symbol_hook
10419 #define elf_backend_size_dynamic_sections ppc_elf_size_dynamic_sections
10420 #define elf_backend_hash_symbol ppc_elf_hash_symbol
10421 #define elf_backend_finish_dynamic_symbol ppc_elf_finish_dynamic_symbol
10422 #define elf_backend_finish_dynamic_sections ppc_elf_finish_dynamic_sections
10423 #define elf_backend_fake_sections ppc_elf_fake_sections
10424 #define elf_backend_additional_program_headers ppc_elf_additional_program_headers
10425 #define elf_backend_modify_segment_map ppc_elf_modify_segment_map
10426 #define elf_backend_grok_prstatus ppc_elf_grok_prstatus
10427 #define elf_backend_grok_psinfo ppc_elf_grok_psinfo
10428 #define elf_backend_write_core_note ppc_elf_write_core_note
10429 #define elf_backend_reloc_type_class ppc_elf_reloc_type_class
10430 #define elf_backend_begin_write_processing ppc_elf_begin_write_processing
10431 #define elf_backend_final_write_processing ppc_elf_final_write_processing
10432 #define elf_backend_write_section ppc_elf_write_section
10433 #define elf_backend_get_sec_type_attr ppc_elf_get_sec_type_attr
10434 #define elf_backend_plt_sym_val ppc_elf_plt_sym_val
10435 #define elf_backend_action_discarded ppc_elf_action_discarded
10436 #define elf_backend_init_index_section _bfd_elf_init_1_index_section
10437 #define elf_backend_lookup_section_flags_hook ppc_elf_lookup_section_flags
10438 #define elf_backend_section_processing ppc_elf_section_processing
10439
10440 #include "elf32-target.h"
10441
10442 /* FreeBSD Target */
10443
10444 #undef TARGET_LITTLE_SYM
10445 #undef TARGET_LITTLE_NAME
10446
10447 #undef TARGET_BIG_SYM
10448 #define TARGET_BIG_SYM powerpc_elf32_fbsd_vec
10449 #undef TARGET_BIG_NAME
10450 #define TARGET_BIG_NAME "elf32-powerpc-freebsd"
10451
10452 #undef ELF_OSABI
10453 #define ELF_OSABI ELFOSABI_FREEBSD
10454
10455 #undef elf32_bed
10456 #define elf32_bed elf32_powerpc_fbsd_bed
10457
10458 #include "elf32-target.h"
10459
10460 /* VxWorks Target */
10461
10462 #undef TARGET_LITTLE_SYM
10463 #undef TARGET_LITTLE_NAME
10464
10465 #undef TARGET_BIG_SYM
10466 #define TARGET_BIG_SYM powerpc_elf32_vxworks_vec
10467 #undef TARGET_BIG_NAME
10468 #define TARGET_BIG_NAME "elf32-powerpc-vxworks"
10469
10470 #undef ELF_OSABI
10471
10472 /* VxWorks uses the elf default section flags for .plt. */
10473 static const struct bfd_elf_special_section *
10474 ppc_elf_vxworks_get_sec_type_attr (bfd *abfd ATTRIBUTE_UNUSED, asection *sec)
10475 {
10476 if (sec->name == NULL)
10477 return NULL;
10478
10479 if (strcmp (sec->name, ".plt") == 0)
10480 return _bfd_elf_get_sec_type_attr (abfd, sec);
10481
10482 return ppc_elf_get_sec_type_attr (abfd, sec);
10483 }
10484
10485 /* Like ppc_elf_link_hash_table_create, but overrides
10486 appropriately for VxWorks. */
10487 static struct bfd_link_hash_table *
10488 ppc_elf_vxworks_link_hash_table_create (bfd *abfd)
10489 {
10490 struct bfd_link_hash_table *ret;
10491
10492 ret = ppc_elf_link_hash_table_create (abfd);
10493 if (ret)
10494 {
10495 struct ppc_elf_link_hash_table *htab
10496 = (struct ppc_elf_link_hash_table *)ret;
10497 htab->is_vxworks = 1;
10498 htab->plt_type = PLT_VXWORKS;
10499 htab->plt_entry_size = VXWORKS_PLT_ENTRY_SIZE;
10500 htab->plt_slot_size = VXWORKS_PLT_ENTRY_SIZE;
10501 htab->plt_initial_entry_size = VXWORKS_PLT_INITIAL_ENTRY_SIZE;
10502 }
10503 return ret;
10504 }
10505
10506 /* Tweak magic VxWorks symbols as they are loaded. */
10507 static bfd_boolean
10508 ppc_elf_vxworks_add_symbol_hook (bfd *abfd,
10509 struct bfd_link_info *info,
10510 Elf_Internal_Sym *sym,
10511 const char **namep ATTRIBUTE_UNUSED,
10512 flagword *flagsp ATTRIBUTE_UNUSED,
10513 asection **secp,
10514 bfd_vma *valp)
10515 {
10516 if (!elf_vxworks_add_symbol_hook(abfd, info, sym,namep, flagsp, secp,
10517 valp))
10518 return FALSE;
10519
10520 return ppc_elf_add_symbol_hook(abfd, info, sym,namep, flagsp, secp, valp);
10521 }
10522
10523 static void
10524 ppc_elf_vxworks_final_write_processing (bfd *abfd, bfd_boolean linker)
10525 {
10526 ppc_elf_final_write_processing(abfd, linker);
10527 elf_vxworks_final_write_processing(abfd, linker);
10528 }
10529
10530 /* On VxWorks, we emit relocations against _PROCEDURE_LINKAGE_TABLE_, so
10531 define it. */
10532 #undef elf_backend_want_plt_sym
10533 #define elf_backend_want_plt_sym 1
10534 #undef elf_backend_want_got_plt
10535 #define elf_backend_want_got_plt 1
10536 #undef elf_backend_got_symbol_offset
10537 #define elf_backend_got_symbol_offset 0
10538 #undef elf_backend_plt_not_loaded
10539 #define elf_backend_plt_not_loaded 0
10540 #undef elf_backend_plt_readonly
10541 #define elf_backend_plt_readonly 1
10542 #undef elf_backend_got_header_size
10543 #define elf_backend_got_header_size 12
10544
10545 #undef bfd_elf32_get_synthetic_symtab
10546
10547 #undef bfd_elf32_bfd_link_hash_table_create
10548 #define bfd_elf32_bfd_link_hash_table_create \
10549 ppc_elf_vxworks_link_hash_table_create
10550 #undef elf_backend_add_symbol_hook
10551 #define elf_backend_add_symbol_hook \
10552 ppc_elf_vxworks_add_symbol_hook
10553 #undef elf_backend_link_output_symbol_hook
10554 #define elf_backend_link_output_symbol_hook \
10555 elf_vxworks_link_output_symbol_hook
10556 #undef elf_backend_final_write_processing
10557 #define elf_backend_final_write_processing \
10558 ppc_elf_vxworks_final_write_processing
10559 #undef elf_backend_get_sec_type_attr
10560 #define elf_backend_get_sec_type_attr \
10561 ppc_elf_vxworks_get_sec_type_attr
10562 #undef elf_backend_emit_relocs
10563 #define elf_backend_emit_relocs \
10564 elf_vxworks_emit_relocs
10565
10566 #undef elf32_bed
10567 #define elf32_bed ppc_elf_vxworks_bed
10568 #undef elf_backend_post_process_headers
10569
10570 #include "elf32-target.h"
GDB Binutils - Deliverables
This page took 0.2825 seconds and 4 git commands to generate.