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