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PR22374, PowerPC unnecessary PLT entries
[deliverable/binutils-gdb.git] / bfd / elf32-ppc.c
1 /* PowerPC-specific support for 32-bit ELF
2 Copyright (C) 1994-2017 Free Software Foundation, Inc.
3 Written by Ian Lance Taylor, Cygnus Support.
4
5 This file is part of BFD, the Binary File Descriptor library.
6
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
11
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
16
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the
19 Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor,
20 Boston, MA 02110-1301, USA. */
21
22
23 /* This file is based on a preliminary PowerPC ELF ABI. The
24 information may not match the final PowerPC ELF ABI. It includes
25 suggestions from the in-progress Embedded PowerPC ABI, and that
26 information may also not match. */
27
28 #include "sysdep.h"
29 #include <stdarg.h>
30 #include "bfd.h"
31 #include "bfdlink.h"
32 #include "libbfd.h"
33 #include "elf-bfd.h"
34 #include "elf/ppc.h"
35 #include "elf32-ppc.h"
36 #include "elf-vxworks.h"
37 #include "dwarf2.h"
38 #include "opcode/ppc.h"
39
40 typedef enum split16_format_type
41 {
42 split16a_type = 0,
43 split16d_type
44 }
45 split16_format_type;
46
47 /* RELA relocations are used here. */
48
49 static bfd_reloc_status_type ppc_elf_addr16_ha_reloc
50 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
51 static bfd_reloc_status_type ppc_elf_unhandled_reloc
52 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
53
54 /* Branch prediction bit for branch taken relocs. */
55 #define BRANCH_PREDICT_BIT 0x200000
56 /* Mask to set RA in memory instructions. */
57 #define RA_REGISTER_MASK 0x001f0000
58 /* Value to shift register by to insert RA. */
59 #define RA_REGISTER_SHIFT 16
60
61 /* The name of the dynamic interpreter. This is put in the .interp
62 section. */
63 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
64
65 /* For old-style PLT. */
66 /* The number of single-slot PLT entries (the rest use two slots). */
67 #define PLT_NUM_SINGLE_ENTRIES 8192
68
69 /* For new-style .glink and .plt. */
70 #define GLINK_PLTRESOLVE 16*4
71 #define GLINK_ENTRY_SIZE 4*4
72 #define TLS_GET_ADDR_GLINK_SIZE 12*4
73
74 /* VxWorks uses its own plt layout, filled in by the static linker. */
75
76 /* The standard VxWorks PLT entry. */
77 #define VXWORKS_PLT_ENTRY_SIZE 32
78 static const bfd_vma ppc_elf_vxworks_plt_entry
79 [VXWORKS_PLT_ENTRY_SIZE / 4] =
80 {
81 0x3d800000, /* lis r12,0 */
82 0x818c0000, /* lwz r12,0(r12) */
83 0x7d8903a6, /* mtctr r12 */
84 0x4e800420, /* bctr */
85 0x39600000, /* li r11,0 */
86 0x48000000, /* b 14 <.PLT0resolve+0x4> */
87 0x60000000, /* nop */
88 0x60000000, /* nop */
89 };
90 static const bfd_vma ppc_elf_vxworks_pic_plt_entry
91 [VXWORKS_PLT_ENTRY_SIZE / 4] =
92 {
93 0x3d9e0000, /* addis r12,r30,0 */
94 0x818c0000, /* lwz r12,0(r12) */
95 0x7d8903a6, /* mtctr r12 */
96 0x4e800420, /* bctr */
97 0x39600000, /* li r11,0 */
98 0x48000000, /* b 14 <.PLT0resolve+0x4> 14: R_PPC_REL24 .PLTresolve */
99 0x60000000, /* nop */
100 0x60000000, /* nop */
101 };
102
103 /* The initial VxWorks PLT entry. */
104 #define VXWORKS_PLT_INITIAL_ENTRY_SIZE 32
105 static const bfd_vma ppc_elf_vxworks_plt0_entry
106 [VXWORKS_PLT_INITIAL_ENTRY_SIZE / 4] =
107 {
108 0x3d800000, /* lis r12,0 */
109 0x398c0000, /* addi r12,r12,0 */
110 0x800c0008, /* lwz r0,8(r12) */
111 0x7c0903a6, /* mtctr r0 */
112 0x818c0004, /* lwz r12,4(r12) */
113 0x4e800420, /* bctr */
114 0x60000000, /* nop */
115 0x60000000, /* nop */
116 };
117 static const bfd_vma ppc_elf_vxworks_pic_plt0_entry
118 [VXWORKS_PLT_INITIAL_ENTRY_SIZE / 4] =
119 {
120 0x819e0008, /* lwz r12,8(r30) */
121 0x7d8903a6, /* mtctr r12 */
122 0x819e0004, /* lwz r12,4(r30) */
123 0x4e800420, /* bctr */
124 0x60000000, /* nop */
125 0x60000000, /* nop */
126 0x60000000, /* nop */
127 0x60000000, /* nop */
128 };
129
130 /* For executables, we have some additional relocations in
131 .rela.plt.unloaded, for the kernel loader. */
132
133 /* The number of non-JMP_SLOT relocations per PLT0 slot. */
134 #define VXWORKS_PLT_NON_JMP_SLOT_RELOCS 3
135 /* The number of relocations in the PLTResolve slot. */
136 #define VXWORKS_PLTRESOLVE_RELOCS 2
137 /* The number of relocations in the PLTResolve slot when creating
138 a shared library. */
139 #define VXWORKS_PLTRESOLVE_RELOCS_SHLIB 0
140
141 /* Some instructions. */
142 #define ADDIS_11_11 0x3d6b0000
143 #define ADDIS_11_30 0x3d7e0000
144 #define ADDIS_12_12 0x3d8c0000
145 #define ADDI_11_11 0x396b0000
146 #define ADD_0_11_11 0x7c0b5a14
147 #define ADD_3_12_2 0x7c6c1214
148 #define ADD_11_0_11 0x7d605a14
149 #define B 0x48000000
150 #define BA 0x48000002
151 #define BCL_20_31 0x429f0005
152 #define BCTR 0x4e800420
153 #define BEQLR 0x4d820020
154 #define CMPWI_11_0 0x2c0b0000
155 #define LIS_11 0x3d600000
156 #define LIS_12 0x3d800000
157 #define LWZU_0_12 0x840c0000
158 #define LWZ_0_12 0x800c0000
159 #define LWZ_11_3 0x81630000
160 #define LWZ_11_11 0x816b0000
161 #define LWZ_11_30 0x817e0000
162 #define LWZ_12_3 0x81830000
163 #define LWZ_12_12 0x818c0000
164 #define MR_0_3 0x7c601b78
165 #define MR_3_0 0x7c030378
166 #define MFLR_0 0x7c0802a6
167 #define MFLR_12 0x7d8802a6
168 #define MTCTR_0 0x7c0903a6
169 #define MTCTR_11 0x7d6903a6
170 #define MTLR_0 0x7c0803a6
171 #define NOP 0x60000000
172 #define SUB_11_11_12 0x7d6c5850
173
174 /* Offset of tp and dtp pointers from start of TLS block. */
175 #define TP_OFFSET 0x7000
176 #define DTP_OFFSET 0x8000
177
178 /* The value of a defined global symbol. */
179 #define SYM_VAL(SYM) \
180 ((SYM)->root.u.def.section->output_section->vma \
181 + (SYM)->root.u.def.section->output_offset \
182 + (SYM)->root.u.def.value)
183 \f
184 static reloc_howto_type *ppc_elf_howto_table[R_PPC_max];
185
186 static reloc_howto_type ppc_elf_howto_raw[] = {
187 /* This reloc does nothing. */
188 HOWTO (R_PPC_NONE, /* type */
189 0, /* rightshift */
190 3, /* size (0 = byte, 1 = short, 2 = long) */
191 0, /* bitsize */
192 FALSE, /* pc_relative */
193 0, /* bitpos */
194 complain_overflow_dont, /* complain_on_overflow */
195 bfd_elf_generic_reloc, /* special_function */
196 "R_PPC_NONE", /* name */
197 FALSE, /* partial_inplace */
198 0, /* src_mask */
199 0, /* dst_mask */
200 FALSE), /* pcrel_offset */
201
202 /* A standard 32 bit relocation. */
203 HOWTO (R_PPC_ADDR32, /* type */
204 0, /* rightshift */
205 2, /* size (0 = byte, 1 = short, 2 = long) */
206 32, /* bitsize */
207 FALSE, /* pc_relative */
208 0, /* bitpos */
209 complain_overflow_dont, /* complain_on_overflow */
210 bfd_elf_generic_reloc, /* special_function */
211 "R_PPC_ADDR32", /* name */
212 FALSE, /* partial_inplace */
213 0, /* src_mask */
214 0xffffffff, /* dst_mask */
215 FALSE), /* pcrel_offset */
216
217 /* An absolute 26 bit branch; the lower two bits must be zero.
218 FIXME: we don't check that, we just clear them. */
219 HOWTO (R_PPC_ADDR24, /* type */
220 0, /* rightshift */
221 2, /* size (0 = byte, 1 = short, 2 = long) */
222 26, /* bitsize */
223 FALSE, /* pc_relative */
224 0, /* bitpos */
225 complain_overflow_signed, /* complain_on_overflow */
226 bfd_elf_generic_reloc, /* special_function */
227 "R_PPC_ADDR24", /* name */
228 FALSE, /* partial_inplace */
229 0, /* src_mask */
230 0x3fffffc, /* dst_mask */
231 FALSE), /* pcrel_offset */
232
233 /* A standard 16 bit relocation. */
234 HOWTO (R_PPC_ADDR16, /* type */
235 0, /* rightshift */
236 1, /* size (0 = byte, 1 = short, 2 = long) */
237 16, /* bitsize */
238 FALSE, /* pc_relative */
239 0, /* bitpos */
240 complain_overflow_bitfield, /* complain_on_overflow */
241 bfd_elf_generic_reloc, /* special_function */
242 "R_PPC_ADDR16", /* name */
243 FALSE, /* partial_inplace */
244 0, /* src_mask */
245 0xffff, /* dst_mask */
246 FALSE), /* pcrel_offset */
247
248 /* A 16 bit relocation without overflow. */
249 HOWTO (R_PPC_ADDR16_LO, /* type */
250 0, /* rightshift */
251 1, /* size (0 = byte, 1 = short, 2 = long) */
252 16, /* bitsize */
253 FALSE, /* pc_relative */
254 0, /* bitpos */
255 complain_overflow_dont,/* complain_on_overflow */
256 bfd_elf_generic_reloc, /* special_function */
257 "R_PPC_ADDR16_LO", /* name */
258 FALSE, /* partial_inplace */
259 0, /* src_mask */
260 0xffff, /* dst_mask */
261 FALSE), /* pcrel_offset */
262
263 /* The high order 16 bits of an address. */
264 HOWTO (R_PPC_ADDR16_HI, /* type */
265 16, /* rightshift */
266 1, /* size (0 = byte, 1 = short, 2 = long) */
267 16, /* bitsize */
268 FALSE, /* pc_relative */
269 0, /* bitpos */
270 complain_overflow_dont, /* complain_on_overflow */
271 bfd_elf_generic_reloc, /* special_function */
272 "R_PPC_ADDR16_HI", /* name */
273 FALSE, /* partial_inplace */
274 0, /* src_mask */
275 0xffff, /* dst_mask */
276 FALSE), /* pcrel_offset */
277
278 /* The high order 16 bits of an address, plus 1 if the contents of
279 the low 16 bits, treated as a signed number, is negative. */
280 HOWTO (R_PPC_ADDR16_HA, /* type */
281 16, /* rightshift */
282 1, /* size (0 = byte, 1 = short, 2 = long) */
283 16, /* bitsize */
284 FALSE, /* pc_relative */
285 0, /* bitpos */
286 complain_overflow_dont, /* complain_on_overflow */
287 ppc_elf_addr16_ha_reloc, /* special_function */
288 "R_PPC_ADDR16_HA", /* name */
289 FALSE, /* partial_inplace */
290 0, /* src_mask */
291 0xffff, /* dst_mask */
292 FALSE), /* pcrel_offset */
293
294 /* An absolute 16 bit branch; the lower two bits must be zero.
295 FIXME: we don't check that, we just clear them. */
296 HOWTO (R_PPC_ADDR14, /* type */
297 0, /* rightshift */
298 2, /* size (0 = byte, 1 = short, 2 = long) */
299 16, /* bitsize */
300 FALSE, /* pc_relative */
301 0, /* bitpos */
302 complain_overflow_signed, /* complain_on_overflow */
303 bfd_elf_generic_reloc, /* special_function */
304 "R_PPC_ADDR14", /* name */
305 FALSE, /* partial_inplace */
306 0, /* src_mask */
307 0xfffc, /* dst_mask */
308 FALSE), /* pcrel_offset */
309
310 /* An absolute 16 bit branch, for which bit 10 should be set to
311 indicate that the branch is expected to be taken. The lower two
312 bits must be zero. */
313 HOWTO (R_PPC_ADDR14_BRTAKEN, /* type */
314 0, /* rightshift */
315 2, /* size (0 = byte, 1 = short, 2 = long) */
316 16, /* bitsize */
317 FALSE, /* pc_relative */
318 0, /* bitpos */
319 complain_overflow_signed, /* complain_on_overflow */
320 bfd_elf_generic_reloc, /* special_function */
321 "R_PPC_ADDR14_BRTAKEN",/* name */
322 FALSE, /* partial_inplace */
323 0, /* src_mask */
324 0xfffc, /* dst_mask */
325 FALSE), /* pcrel_offset */
326
327 /* An absolute 16 bit branch, for which bit 10 should be set to
328 indicate that the branch is not expected to be taken. The lower
329 two bits must be zero. */
330 HOWTO (R_PPC_ADDR14_BRNTAKEN, /* type */
331 0, /* rightshift */
332 2, /* size (0 = byte, 1 = short, 2 = long) */
333 16, /* bitsize */
334 FALSE, /* pc_relative */
335 0, /* bitpos */
336 complain_overflow_signed, /* complain_on_overflow */
337 bfd_elf_generic_reloc, /* special_function */
338 "R_PPC_ADDR14_BRNTAKEN",/* name */
339 FALSE, /* partial_inplace */
340 0, /* src_mask */
341 0xfffc, /* dst_mask */
342 FALSE), /* pcrel_offset */
343
344 /* A relative 26 bit branch; the lower two bits must be zero. */
345 HOWTO (R_PPC_REL24, /* type */
346 0, /* rightshift */
347 2, /* size (0 = byte, 1 = short, 2 = long) */
348 26, /* bitsize */
349 TRUE, /* pc_relative */
350 0, /* bitpos */
351 complain_overflow_signed, /* complain_on_overflow */
352 bfd_elf_generic_reloc, /* special_function */
353 "R_PPC_REL24", /* name */
354 FALSE, /* partial_inplace */
355 0, /* src_mask */
356 0x3fffffc, /* dst_mask */
357 TRUE), /* pcrel_offset */
358
359 /* A relative 16 bit branch; the lower two bits must be zero. */
360 HOWTO (R_PPC_REL14, /* type */
361 0, /* rightshift */
362 2, /* size (0 = byte, 1 = short, 2 = long) */
363 16, /* bitsize */
364 TRUE, /* pc_relative */
365 0, /* bitpos */
366 complain_overflow_signed, /* complain_on_overflow */
367 bfd_elf_generic_reloc, /* special_function */
368 "R_PPC_REL14", /* name */
369 FALSE, /* partial_inplace */
370 0, /* src_mask */
371 0xfffc, /* dst_mask */
372 TRUE), /* pcrel_offset */
373
374 /* A relative 16 bit branch. Bit 10 should be set to indicate that
375 the branch is expected to be taken. The lower two bits must be
376 zero. */
377 HOWTO (R_PPC_REL14_BRTAKEN, /* type */
378 0, /* rightshift */
379 2, /* size (0 = byte, 1 = short, 2 = long) */
380 16, /* bitsize */
381 TRUE, /* pc_relative */
382 0, /* bitpos */
383 complain_overflow_signed, /* complain_on_overflow */
384 bfd_elf_generic_reloc, /* special_function */
385 "R_PPC_REL14_BRTAKEN", /* name */
386 FALSE, /* partial_inplace */
387 0, /* src_mask */
388 0xfffc, /* dst_mask */
389 TRUE), /* pcrel_offset */
390
391 /* A relative 16 bit branch. Bit 10 should be set to indicate that
392 the branch is not expected to be taken. The lower two bits must
393 be zero. */
394 HOWTO (R_PPC_REL14_BRNTAKEN, /* type */
395 0, /* rightshift */
396 2, /* size (0 = byte, 1 = short, 2 = long) */
397 16, /* bitsize */
398 TRUE, /* pc_relative */
399 0, /* bitpos */
400 complain_overflow_signed, /* complain_on_overflow */
401 bfd_elf_generic_reloc, /* special_function */
402 "R_PPC_REL14_BRNTAKEN",/* name */
403 FALSE, /* partial_inplace */
404 0, /* src_mask */
405 0xfffc, /* dst_mask */
406 TRUE), /* pcrel_offset */
407
408 /* Like R_PPC_ADDR16, but referring to the GOT table entry for the
409 symbol. */
410 HOWTO (R_PPC_GOT16, /* type */
411 0, /* rightshift */
412 1, /* size (0 = byte, 1 = short, 2 = long) */
413 16, /* bitsize */
414 FALSE, /* pc_relative */
415 0, /* bitpos */
416 complain_overflow_signed, /* complain_on_overflow */
417 ppc_elf_unhandled_reloc, /* special_function */
418 "R_PPC_GOT16", /* name */
419 FALSE, /* partial_inplace */
420 0, /* src_mask */
421 0xffff, /* dst_mask */
422 FALSE), /* pcrel_offset */
423
424 /* Like R_PPC_ADDR16_LO, but referring to the GOT table entry for
425 the symbol. */
426 HOWTO (R_PPC_GOT16_LO, /* type */
427 0, /* rightshift */
428 1, /* size (0 = byte, 1 = short, 2 = long) */
429 16, /* bitsize */
430 FALSE, /* pc_relative */
431 0, /* bitpos */
432 complain_overflow_dont, /* complain_on_overflow */
433 ppc_elf_unhandled_reloc, /* special_function */
434 "R_PPC_GOT16_LO", /* name */
435 FALSE, /* partial_inplace */
436 0, /* src_mask */
437 0xffff, /* dst_mask */
438 FALSE), /* pcrel_offset */
439
440 /* Like R_PPC_ADDR16_HI, but referring to the GOT table entry for
441 the symbol. */
442 HOWTO (R_PPC_GOT16_HI, /* type */
443 16, /* rightshift */
444 1, /* size (0 = byte, 1 = short, 2 = long) */
445 16, /* bitsize */
446 FALSE, /* pc_relative */
447 0, /* bitpos */
448 complain_overflow_dont, /* complain_on_overflow */
449 ppc_elf_unhandled_reloc, /* special_function */
450 "R_PPC_GOT16_HI", /* name */
451 FALSE, /* partial_inplace */
452 0, /* src_mask */
453 0xffff, /* dst_mask */
454 FALSE), /* pcrel_offset */
455
456 /* Like R_PPC_ADDR16_HA, but referring to the GOT table entry for
457 the symbol. */
458 HOWTO (R_PPC_GOT16_HA, /* type */
459 16, /* rightshift */
460 1, /* size (0 = byte, 1 = short, 2 = long) */
461 16, /* bitsize */
462 FALSE, /* pc_relative */
463 0, /* bitpos */
464 complain_overflow_dont, /* complain_on_overflow */
465 ppc_elf_unhandled_reloc, /* special_function */
466 "R_PPC_GOT16_HA", /* name */
467 FALSE, /* partial_inplace */
468 0, /* src_mask */
469 0xffff, /* dst_mask */
470 FALSE), /* pcrel_offset */
471
472 /* Like R_PPC_REL24, but referring to the procedure linkage table
473 entry for the symbol. */
474 HOWTO (R_PPC_PLTREL24, /* type */
475 0, /* rightshift */
476 2, /* size (0 = byte, 1 = short, 2 = long) */
477 26, /* bitsize */
478 TRUE, /* pc_relative */
479 0, /* bitpos */
480 complain_overflow_signed, /* complain_on_overflow */
481 ppc_elf_unhandled_reloc, /* special_function */
482 "R_PPC_PLTREL24", /* name */
483 FALSE, /* partial_inplace */
484 0, /* src_mask */
485 0x3fffffc, /* dst_mask */
486 TRUE), /* pcrel_offset */
487
488 /* This is used only by the dynamic linker. The symbol should exist
489 both in the object being run and in some shared library. The
490 dynamic linker copies the data addressed by the symbol from the
491 shared library into the object, because the object being
492 run has to have the data at some particular address. */
493 HOWTO (R_PPC_COPY, /* type */
494 0, /* rightshift */
495 2, /* size (0 = byte, 1 = short, 2 = long) */
496 32, /* bitsize */
497 FALSE, /* pc_relative */
498 0, /* bitpos */
499 complain_overflow_dont, /* complain_on_overflow */
500 ppc_elf_unhandled_reloc, /* special_function */
501 "R_PPC_COPY", /* name */
502 FALSE, /* partial_inplace */
503 0, /* src_mask */
504 0, /* dst_mask */
505 FALSE), /* pcrel_offset */
506
507 /* Like R_PPC_ADDR32, but used when setting global offset table
508 entries. */
509 HOWTO (R_PPC_GLOB_DAT, /* type */
510 0, /* rightshift */
511 2, /* size (0 = byte, 1 = short, 2 = long) */
512 32, /* bitsize */
513 FALSE, /* pc_relative */
514 0, /* bitpos */
515 complain_overflow_dont, /* complain_on_overflow */
516 ppc_elf_unhandled_reloc, /* special_function */
517 "R_PPC_GLOB_DAT", /* name */
518 FALSE, /* partial_inplace */
519 0, /* src_mask */
520 0xffffffff, /* dst_mask */
521 FALSE), /* pcrel_offset */
522
523 /* Marks a procedure linkage table entry for a symbol. */
524 HOWTO (R_PPC_JMP_SLOT, /* type */
525 0, /* rightshift */
526 2, /* size (0 = byte, 1 = short, 2 = long) */
527 32, /* bitsize */
528 FALSE, /* pc_relative */
529 0, /* bitpos */
530 complain_overflow_dont, /* complain_on_overflow */
531 ppc_elf_unhandled_reloc, /* special_function */
532 "R_PPC_JMP_SLOT", /* name */
533 FALSE, /* partial_inplace */
534 0, /* src_mask */
535 0, /* dst_mask */
536 FALSE), /* pcrel_offset */
537
538 /* Used only by the dynamic linker. When the object is run, this
539 longword is set to the load address of the object, plus the
540 addend. */
541 HOWTO (R_PPC_RELATIVE, /* type */
542 0, /* rightshift */
543 2, /* size (0 = byte, 1 = short, 2 = long) */
544 32, /* bitsize */
545 FALSE, /* pc_relative */
546 0, /* bitpos */
547 complain_overflow_dont, /* complain_on_overflow */
548 bfd_elf_generic_reloc, /* special_function */
549 "R_PPC_RELATIVE", /* name */
550 FALSE, /* partial_inplace */
551 0, /* src_mask */
552 0xffffffff, /* dst_mask */
553 FALSE), /* pcrel_offset */
554
555 /* Like R_PPC_REL24, but uses the value of the symbol within the
556 object rather than the final value. Normally used for
557 _GLOBAL_OFFSET_TABLE_. */
558 HOWTO (R_PPC_LOCAL24PC, /* type */
559 0, /* rightshift */
560 2, /* size (0 = byte, 1 = short, 2 = long) */
561 26, /* bitsize */
562 TRUE, /* pc_relative */
563 0, /* bitpos */
564 complain_overflow_signed, /* complain_on_overflow */
565 bfd_elf_generic_reloc, /* special_function */
566 "R_PPC_LOCAL24PC", /* name */
567 FALSE, /* partial_inplace */
568 0, /* src_mask */
569 0x3fffffc, /* dst_mask */
570 TRUE), /* pcrel_offset */
571
572 /* Like R_PPC_ADDR32, but may be unaligned. */
573 HOWTO (R_PPC_UADDR32, /* type */
574 0, /* rightshift */
575 2, /* size (0 = byte, 1 = short, 2 = long) */
576 32, /* bitsize */
577 FALSE, /* pc_relative */
578 0, /* bitpos */
579 complain_overflow_dont, /* complain_on_overflow */
580 bfd_elf_generic_reloc, /* special_function */
581 "R_PPC_UADDR32", /* name */
582 FALSE, /* partial_inplace */
583 0, /* src_mask */
584 0xffffffff, /* dst_mask */
585 FALSE), /* pcrel_offset */
586
587 /* Like R_PPC_ADDR16, but may be unaligned. */
588 HOWTO (R_PPC_UADDR16, /* type */
589 0, /* rightshift */
590 1, /* size (0 = byte, 1 = short, 2 = long) */
591 16, /* bitsize */
592 FALSE, /* pc_relative */
593 0, /* bitpos */
594 complain_overflow_bitfield, /* complain_on_overflow */
595 bfd_elf_generic_reloc, /* special_function */
596 "R_PPC_UADDR16", /* name */
597 FALSE, /* partial_inplace */
598 0, /* src_mask */
599 0xffff, /* dst_mask */
600 FALSE), /* pcrel_offset */
601
602 /* 32-bit PC relative */
603 HOWTO (R_PPC_REL32, /* type */
604 0, /* rightshift */
605 2, /* size (0 = byte, 1 = short, 2 = long) */
606 32, /* bitsize */
607 TRUE, /* pc_relative */
608 0, /* bitpos */
609 complain_overflow_dont, /* complain_on_overflow */
610 bfd_elf_generic_reloc, /* special_function */
611 "R_PPC_REL32", /* name */
612 FALSE, /* partial_inplace */
613 0, /* src_mask */
614 0xffffffff, /* dst_mask */
615 TRUE), /* pcrel_offset */
616
617 /* 32-bit relocation to the symbol's procedure linkage table.
618 FIXME: not supported. */
619 HOWTO (R_PPC_PLT32, /* type */
620 0, /* rightshift */
621 2, /* size (0 = byte, 1 = short, 2 = long) */
622 32, /* bitsize */
623 FALSE, /* pc_relative */
624 0, /* bitpos */
625 complain_overflow_dont, /* complain_on_overflow */
626 ppc_elf_unhandled_reloc, /* special_function */
627 "R_PPC_PLT32", /* name */
628 FALSE, /* partial_inplace */
629 0, /* src_mask */
630 0, /* dst_mask */
631 FALSE), /* pcrel_offset */
632
633 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
634 FIXME: not supported. */
635 HOWTO (R_PPC_PLTREL32, /* type */
636 0, /* rightshift */
637 2, /* size (0 = byte, 1 = short, 2 = long) */
638 32, /* bitsize */
639 TRUE, /* pc_relative */
640 0, /* bitpos */
641 complain_overflow_dont, /* complain_on_overflow */
642 ppc_elf_unhandled_reloc, /* special_function */
643 "R_PPC_PLTREL32", /* name */
644 FALSE, /* partial_inplace */
645 0, /* src_mask */
646 0, /* dst_mask */
647 TRUE), /* pcrel_offset */
648
649 /* Like R_PPC_ADDR16_LO, but referring to the PLT table entry for
650 the symbol. */
651 HOWTO (R_PPC_PLT16_LO, /* type */
652 0, /* rightshift */
653 1, /* size (0 = byte, 1 = short, 2 = long) */
654 16, /* bitsize */
655 FALSE, /* pc_relative */
656 0, /* bitpos */
657 complain_overflow_dont, /* complain_on_overflow */
658 ppc_elf_unhandled_reloc, /* special_function */
659 "R_PPC_PLT16_LO", /* name */
660 FALSE, /* partial_inplace */
661 0, /* src_mask */
662 0xffff, /* dst_mask */
663 FALSE), /* pcrel_offset */
664
665 /* Like R_PPC_ADDR16_HI, but referring to the PLT table entry for
666 the symbol. */
667 HOWTO (R_PPC_PLT16_HI, /* type */
668 16, /* rightshift */
669 1, /* size (0 = byte, 1 = short, 2 = long) */
670 16, /* bitsize */
671 FALSE, /* pc_relative */
672 0, /* bitpos */
673 complain_overflow_dont, /* complain_on_overflow */
674 ppc_elf_unhandled_reloc, /* special_function */
675 "R_PPC_PLT16_HI", /* name */
676 FALSE, /* partial_inplace */
677 0, /* src_mask */
678 0xffff, /* dst_mask */
679 FALSE), /* pcrel_offset */
680
681 /* Like R_PPC_ADDR16_HA, but referring to the PLT table entry for
682 the symbol. */
683 HOWTO (R_PPC_PLT16_HA, /* type */
684 16, /* rightshift */
685 1, /* size (0 = byte, 1 = short, 2 = long) */
686 16, /* bitsize */
687 FALSE, /* pc_relative */
688 0, /* bitpos */
689 complain_overflow_dont, /* complain_on_overflow */
690 ppc_elf_unhandled_reloc, /* special_function */
691 "R_PPC_PLT16_HA", /* name */
692 FALSE, /* partial_inplace */
693 0, /* src_mask */
694 0xffff, /* dst_mask */
695 FALSE), /* pcrel_offset */
696
697 /* A sign-extended 16 bit value relative to _SDA_BASE_, for use with
698 small data items. */
699 HOWTO (R_PPC_SDAREL16, /* type */
700 0, /* rightshift */
701 1, /* size (0 = byte, 1 = short, 2 = long) */
702 16, /* bitsize */
703 FALSE, /* pc_relative */
704 0, /* bitpos */
705 complain_overflow_signed, /* complain_on_overflow */
706 ppc_elf_unhandled_reloc, /* special_function */
707 "R_PPC_SDAREL16", /* name */
708 FALSE, /* partial_inplace */
709 0, /* src_mask */
710 0xffff, /* dst_mask */
711 FALSE), /* pcrel_offset */
712
713 /* 16-bit section relative relocation. */
714 HOWTO (R_PPC_SECTOFF, /* type */
715 0, /* rightshift */
716 1, /* size (0 = byte, 1 = short, 2 = long) */
717 16, /* bitsize */
718 FALSE, /* pc_relative */
719 0, /* bitpos */
720 complain_overflow_signed, /* complain_on_overflow */
721 ppc_elf_unhandled_reloc, /* special_function */
722 "R_PPC_SECTOFF", /* name */
723 FALSE, /* partial_inplace */
724 0, /* src_mask */
725 0xffff, /* dst_mask */
726 FALSE), /* pcrel_offset */
727
728 /* 16-bit lower half section relative relocation. */
729 HOWTO (R_PPC_SECTOFF_LO, /* type */
730 0, /* rightshift */
731 1, /* size (0 = byte, 1 = short, 2 = long) */
732 16, /* bitsize */
733 FALSE, /* pc_relative */
734 0, /* bitpos */
735 complain_overflow_dont, /* complain_on_overflow */
736 ppc_elf_unhandled_reloc, /* special_function */
737 "R_PPC_SECTOFF_LO", /* name */
738 FALSE, /* partial_inplace */
739 0, /* src_mask */
740 0xffff, /* dst_mask */
741 FALSE), /* pcrel_offset */
742
743 /* 16-bit upper half section relative relocation. */
744 HOWTO (R_PPC_SECTOFF_HI, /* type */
745 16, /* rightshift */
746 1, /* size (0 = byte, 1 = short, 2 = long) */
747 16, /* bitsize */
748 FALSE, /* pc_relative */
749 0, /* bitpos */
750 complain_overflow_dont, /* complain_on_overflow */
751 ppc_elf_unhandled_reloc, /* special_function */
752 "R_PPC_SECTOFF_HI", /* name */
753 FALSE, /* partial_inplace */
754 0, /* src_mask */
755 0xffff, /* dst_mask */
756 FALSE), /* pcrel_offset */
757
758 /* 16-bit upper half adjusted section relative relocation. */
759 HOWTO (R_PPC_SECTOFF_HA, /* type */
760 16, /* rightshift */
761 1, /* size (0 = byte, 1 = short, 2 = long) */
762 16, /* bitsize */
763 FALSE, /* pc_relative */
764 0, /* bitpos */
765 complain_overflow_dont, /* complain_on_overflow */
766 ppc_elf_unhandled_reloc, /* special_function */
767 "R_PPC_SECTOFF_HA", /* name */
768 FALSE, /* partial_inplace */
769 0, /* src_mask */
770 0xffff, /* dst_mask */
771 FALSE), /* pcrel_offset */
772
773 /* Marker relocs for TLS. */
774 HOWTO (R_PPC_TLS,
775 0, /* rightshift */
776 2, /* size (0 = byte, 1 = short, 2 = long) */
777 32, /* bitsize */
778 FALSE, /* pc_relative */
779 0, /* bitpos */
780 complain_overflow_dont, /* complain_on_overflow */
781 bfd_elf_generic_reloc, /* special_function */
782 "R_PPC_TLS", /* name */
783 FALSE, /* partial_inplace */
784 0, /* src_mask */
785 0, /* dst_mask */
786 FALSE), /* pcrel_offset */
787
788 HOWTO (R_PPC_TLSGD,
789 0, /* rightshift */
790 2, /* size (0 = byte, 1 = short, 2 = long) */
791 32, /* bitsize */
792 FALSE, /* pc_relative */
793 0, /* bitpos */
794 complain_overflow_dont, /* complain_on_overflow */
795 bfd_elf_generic_reloc, /* special_function */
796 "R_PPC_TLSGD", /* name */
797 FALSE, /* partial_inplace */
798 0, /* src_mask */
799 0, /* dst_mask */
800 FALSE), /* pcrel_offset */
801
802 HOWTO (R_PPC_TLSLD,
803 0, /* rightshift */
804 2, /* size (0 = byte, 1 = short, 2 = long) */
805 32, /* bitsize */
806 FALSE, /* pc_relative */
807 0, /* bitpos */
808 complain_overflow_dont, /* complain_on_overflow */
809 bfd_elf_generic_reloc, /* special_function */
810 "R_PPC_TLSLD", /* name */
811 FALSE, /* partial_inplace */
812 0, /* src_mask */
813 0, /* dst_mask */
814 FALSE), /* pcrel_offset */
815
816 /* Computes the load module index of the load module that contains the
817 definition of its TLS sym. */
818 HOWTO (R_PPC_DTPMOD32,
819 0, /* rightshift */
820 2, /* size (0 = byte, 1 = short, 2 = long) */
821 32, /* bitsize */
822 FALSE, /* pc_relative */
823 0, /* bitpos */
824 complain_overflow_dont, /* complain_on_overflow */
825 ppc_elf_unhandled_reloc, /* special_function */
826 "R_PPC_DTPMOD32", /* name */
827 FALSE, /* partial_inplace */
828 0, /* src_mask */
829 0xffffffff, /* dst_mask */
830 FALSE), /* pcrel_offset */
831
832 /* Computes a dtv-relative displacement, the difference between the value
833 of sym+add and the base address of the thread-local storage block that
834 contains the definition of sym, minus 0x8000. */
835 HOWTO (R_PPC_DTPREL32,
836 0, /* rightshift */
837 2, /* size (0 = byte, 1 = short, 2 = long) */
838 32, /* bitsize */
839 FALSE, /* pc_relative */
840 0, /* bitpos */
841 complain_overflow_dont, /* complain_on_overflow */
842 ppc_elf_unhandled_reloc, /* special_function */
843 "R_PPC_DTPREL32", /* name */
844 FALSE, /* partial_inplace */
845 0, /* src_mask */
846 0xffffffff, /* dst_mask */
847 FALSE), /* pcrel_offset */
848
849 /* A 16 bit dtprel reloc. */
850 HOWTO (R_PPC_DTPREL16,
851 0, /* rightshift */
852 1, /* size (0 = byte, 1 = short, 2 = long) */
853 16, /* bitsize */
854 FALSE, /* pc_relative */
855 0, /* bitpos */
856 complain_overflow_signed, /* complain_on_overflow */
857 ppc_elf_unhandled_reloc, /* special_function */
858 "R_PPC_DTPREL16", /* name */
859 FALSE, /* partial_inplace */
860 0, /* src_mask */
861 0xffff, /* dst_mask */
862 FALSE), /* pcrel_offset */
863
864 /* Like DTPREL16, but no overflow. */
865 HOWTO (R_PPC_DTPREL16_LO,
866 0, /* rightshift */
867 1, /* size (0 = byte, 1 = short, 2 = long) */
868 16, /* bitsize */
869 FALSE, /* pc_relative */
870 0, /* bitpos */
871 complain_overflow_dont, /* complain_on_overflow */
872 ppc_elf_unhandled_reloc, /* special_function */
873 "R_PPC_DTPREL16_LO", /* name */
874 FALSE, /* partial_inplace */
875 0, /* src_mask */
876 0xffff, /* dst_mask */
877 FALSE), /* pcrel_offset */
878
879 /* Like DTPREL16_LO, but next higher group of 16 bits. */
880 HOWTO (R_PPC_DTPREL16_HI,
881 16, /* rightshift */
882 1, /* size (0 = byte, 1 = short, 2 = long) */
883 16, /* bitsize */
884 FALSE, /* pc_relative */
885 0, /* bitpos */
886 complain_overflow_dont, /* complain_on_overflow */
887 ppc_elf_unhandled_reloc, /* special_function */
888 "R_PPC_DTPREL16_HI", /* name */
889 FALSE, /* partial_inplace */
890 0, /* src_mask */
891 0xffff, /* dst_mask */
892 FALSE), /* pcrel_offset */
893
894 /* Like DTPREL16_HI, but adjust for low 16 bits. */
895 HOWTO (R_PPC_DTPREL16_HA,
896 16, /* rightshift */
897 1, /* size (0 = byte, 1 = short, 2 = long) */
898 16, /* bitsize */
899 FALSE, /* pc_relative */
900 0, /* bitpos */
901 complain_overflow_dont, /* complain_on_overflow */
902 ppc_elf_unhandled_reloc, /* special_function */
903 "R_PPC_DTPREL16_HA", /* name */
904 FALSE, /* partial_inplace */
905 0, /* src_mask */
906 0xffff, /* dst_mask */
907 FALSE), /* pcrel_offset */
908
909 /* Computes a tp-relative displacement, the difference between the value of
910 sym+add and the value of the thread pointer (r13). */
911 HOWTO (R_PPC_TPREL32,
912 0, /* rightshift */
913 2, /* size (0 = byte, 1 = short, 2 = long) */
914 32, /* bitsize */
915 FALSE, /* pc_relative */
916 0, /* bitpos */
917 complain_overflow_dont, /* complain_on_overflow */
918 ppc_elf_unhandled_reloc, /* special_function */
919 "R_PPC_TPREL32", /* name */
920 FALSE, /* partial_inplace */
921 0, /* src_mask */
922 0xffffffff, /* dst_mask */
923 FALSE), /* pcrel_offset */
924
925 /* A 16 bit tprel reloc. */
926 HOWTO (R_PPC_TPREL16,
927 0, /* rightshift */
928 1, /* size (0 = byte, 1 = short, 2 = long) */
929 16, /* bitsize */
930 FALSE, /* pc_relative */
931 0, /* bitpos */
932 complain_overflow_signed, /* complain_on_overflow */
933 ppc_elf_unhandled_reloc, /* special_function */
934 "R_PPC_TPREL16", /* name */
935 FALSE, /* partial_inplace */
936 0, /* src_mask */
937 0xffff, /* dst_mask */
938 FALSE), /* pcrel_offset */
939
940 /* Like TPREL16, but no overflow. */
941 HOWTO (R_PPC_TPREL16_LO,
942 0, /* rightshift */
943 1, /* size (0 = byte, 1 = short, 2 = long) */
944 16, /* bitsize */
945 FALSE, /* pc_relative */
946 0, /* bitpos */
947 complain_overflow_dont, /* complain_on_overflow */
948 ppc_elf_unhandled_reloc, /* special_function */
949 "R_PPC_TPREL16_LO", /* name */
950 FALSE, /* partial_inplace */
951 0, /* src_mask */
952 0xffff, /* dst_mask */
953 FALSE), /* pcrel_offset */
954
955 /* Like TPREL16_LO, but next higher group of 16 bits. */
956 HOWTO (R_PPC_TPREL16_HI,
957 16, /* rightshift */
958 1, /* size (0 = byte, 1 = short, 2 = long) */
959 16, /* bitsize */
960 FALSE, /* pc_relative */
961 0, /* bitpos */
962 complain_overflow_dont, /* complain_on_overflow */
963 ppc_elf_unhandled_reloc, /* special_function */
964 "R_PPC_TPREL16_HI", /* name */
965 FALSE, /* partial_inplace */
966 0, /* src_mask */
967 0xffff, /* dst_mask */
968 FALSE), /* pcrel_offset */
969
970 /* Like TPREL16_HI, but adjust for low 16 bits. */
971 HOWTO (R_PPC_TPREL16_HA,
972 16, /* rightshift */
973 1, /* size (0 = byte, 1 = short, 2 = long) */
974 16, /* bitsize */
975 FALSE, /* pc_relative */
976 0, /* bitpos */
977 complain_overflow_dont, /* complain_on_overflow */
978 ppc_elf_unhandled_reloc, /* special_function */
979 "R_PPC_TPREL16_HA", /* name */
980 FALSE, /* partial_inplace */
981 0, /* src_mask */
982 0xffff, /* dst_mask */
983 FALSE), /* pcrel_offset */
984
985 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
986 with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
987 to the first entry. */
988 HOWTO (R_PPC_GOT_TLSGD16,
989 0, /* rightshift */
990 1, /* size (0 = byte, 1 = short, 2 = long) */
991 16, /* bitsize */
992 FALSE, /* pc_relative */
993 0, /* bitpos */
994 complain_overflow_signed, /* complain_on_overflow */
995 ppc_elf_unhandled_reloc, /* special_function */
996 "R_PPC_GOT_TLSGD16", /* name */
997 FALSE, /* partial_inplace */
998 0, /* src_mask */
999 0xffff, /* dst_mask */
1000 FALSE), /* pcrel_offset */
1001
1002 /* Like GOT_TLSGD16, but no overflow. */
1003 HOWTO (R_PPC_GOT_TLSGD16_LO,
1004 0, /* rightshift */
1005 1, /* size (0 = byte, 1 = short, 2 = long) */
1006 16, /* bitsize */
1007 FALSE, /* pc_relative */
1008 0, /* bitpos */
1009 complain_overflow_dont, /* complain_on_overflow */
1010 ppc_elf_unhandled_reloc, /* special_function */
1011 "R_PPC_GOT_TLSGD16_LO", /* name */
1012 FALSE, /* partial_inplace */
1013 0, /* src_mask */
1014 0xffff, /* dst_mask */
1015 FALSE), /* pcrel_offset */
1016
1017 /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
1018 HOWTO (R_PPC_GOT_TLSGD16_HI,
1019 16, /* rightshift */
1020 1, /* size (0 = byte, 1 = short, 2 = long) */
1021 16, /* bitsize */
1022 FALSE, /* pc_relative */
1023 0, /* bitpos */
1024 complain_overflow_dont, /* complain_on_overflow */
1025 ppc_elf_unhandled_reloc, /* special_function */
1026 "R_PPC_GOT_TLSGD16_HI", /* name */
1027 FALSE, /* partial_inplace */
1028 0, /* src_mask */
1029 0xffff, /* dst_mask */
1030 FALSE), /* pcrel_offset */
1031
1032 /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
1033 HOWTO (R_PPC_GOT_TLSGD16_HA,
1034 16, /* rightshift */
1035 1, /* size (0 = byte, 1 = short, 2 = long) */
1036 16, /* bitsize */
1037 FALSE, /* pc_relative */
1038 0, /* bitpos */
1039 complain_overflow_dont, /* complain_on_overflow */
1040 ppc_elf_unhandled_reloc, /* special_function */
1041 "R_PPC_GOT_TLSGD16_HA", /* name */
1042 FALSE, /* partial_inplace */
1043 0, /* src_mask */
1044 0xffff, /* dst_mask */
1045 FALSE), /* pcrel_offset */
1046
1047 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1048 with values (sym+add)@dtpmod and zero, and computes the offset to the
1049 first entry. */
1050 HOWTO (R_PPC_GOT_TLSLD16,
1051 0, /* rightshift */
1052 1, /* size (0 = byte, 1 = short, 2 = long) */
1053 16, /* bitsize */
1054 FALSE, /* pc_relative */
1055 0, /* bitpos */
1056 complain_overflow_signed, /* complain_on_overflow */
1057 ppc_elf_unhandled_reloc, /* special_function */
1058 "R_PPC_GOT_TLSLD16", /* name */
1059 FALSE, /* partial_inplace */
1060 0, /* src_mask */
1061 0xffff, /* dst_mask */
1062 FALSE), /* pcrel_offset */
1063
1064 /* Like GOT_TLSLD16, but no overflow. */
1065 HOWTO (R_PPC_GOT_TLSLD16_LO,
1066 0, /* rightshift */
1067 1, /* size (0 = byte, 1 = short, 2 = long) */
1068 16, /* bitsize */
1069 FALSE, /* pc_relative */
1070 0, /* bitpos */
1071 complain_overflow_dont, /* complain_on_overflow */
1072 ppc_elf_unhandled_reloc, /* special_function */
1073 "R_PPC_GOT_TLSLD16_LO", /* name */
1074 FALSE, /* partial_inplace */
1075 0, /* src_mask */
1076 0xffff, /* dst_mask */
1077 FALSE), /* pcrel_offset */
1078
1079 /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
1080 HOWTO (R_PPC_GOT_TLSLD16_HI,
1081 16, /* rightshift */
1082 1, /* size (0 = byte, 1 = short, 2 = long) */
1083 16, /* bitsize */
1084 FALSE, /* pc_relative */
1085 0, /* bitpos */
1086 complain_overflow_dont, /* complain_on_overflow */
1087 ppc_elf_unhandled_reloc, /* special_function */
1088 "R_PPC_GOT_TLSLD16_HI", /* name */
1089 FALSE, /* partial_inplace */
1090 0, /* src_mask */
1091 0xffff, /* dst_mask */
1092 FALSE), /* pcrel_offset */
1093
1094 /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
1095 HOWTO (R_PPC_GOT_TLSLD16_HA,
1096 16, /* rightshift */
1097 1, /* size (0 = byte, 1 = short, 2 = long) */
1098 16, /* bitsize */
1099 FALSE, /* pc_relative */
1100 0, /* bitpos */
1101 complain_overflow_dont, /* complain_on_overflow */
1102 ppc_elf_unhandled_reloc, /* special_function */
1103 "R_PPC_GOT_TLSLD16_HA", /* name */
1104 FALSE, /* partial_inplace */
1105 0, /* src_mask */
1106 0xffff, /* dst_mask */
1107 FALSE), /* pcrel_offset */
1108
1109 /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
1110 the offset to the entry. */
1111 HOWTO (R_PPC_GOT_DTPREL16,
1112 0, /* rightshift */
1113 1, /* size (0 = byte, 1 = short, 2 = long) */
1114 16, /* bitsize */
1115 FALSE, /* pc_relative */
1116 0, /* bitpos */
1117 complain_overflow_signed, /* complain_on_overflow */
1118 ppc_elf_unhandled_reloc, /* special_function */
1119 "R_PPC_GOT_DTPREL16", /* name */
1120 FALSE, /* partial_inplace */
1121 0, /* src_mask */
1122 0xffff, /* dst_mask */
1123 FALSE), /* pcrel_offset */
1124
1125 /* Like GOT_DTPREL16, but no overflow. */
1126 HOWTO (R_PPC_GOT_DTPREL16_LO,
1127 0, /* rightshift */
1128 1, /* size (0 = byte, 1 = short, 2 = long) */
1129 16, /* bitsize */
1130 FALSE, /* pc_relative */
1131 0, /* bitpos */
1132 complain_overflow_dont, /* complain_on_overflow */
1133 ppc_elf_unhandled_reloc, /* special_function */
1134 "R_PPC_GOT_DTPREL16_LO", /* name */
1135 FALSE, /* partial_inplace */
1136 0, /* src_mask */
1137 0xffff, /* dst_mask */
1138 FALSE), /* pcrel_offset */
1139
1140 /* Like GOT_DTPREL16_LO, but next higher group of 16 bits. */
1141 HOWTO (R_PPC_GOT_DTPREL16_HI,
1142 16, /* rightshift */
1143 1, /* size (0 = byte, 1 = short, 2 = long) */
1144 16, /* bitsize */
1145 FALSE, /* pc_relative */
1146 0, /* bitpos */
1147 complain_overflow_dont, /* complain_on_overflow */
1148 ppc_elf_unhandled_reloc, /* special_function */
1149 "R_PPC_GOT_DTPREL16_HI", /* name */
1150 FALSE, /* partial_inplace */
1151 0, /* src_mask */
1152 0xffff, /* dst_mask */
1153 FALSE), /* pcrel_offset */
1154
1155 /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
1156 HOWTO (R_PPC_GOT_DTPREL16_HA,
1157 16, /* rightshift */
1158 1, /* size (0 = byte, 1 = short, 2 = long) */
1159 16, /* bitsize */
1160 FALSE, /* pc_relative */
1161 0, /* bitpos */
1162 complain_overflow_dont, /* complain_on_overflow */
1163 ppc_elf_unhandled_reloc, /* special_function */
1164 "R_PPC_GOT_DTPREL16_HA", /* name */
1165 FALSE, /* partial_inplace */
1166 0, /* src_mask */
1167 0xffff, /* dst_mask */
1168 FALSE), /* pcrel_offset */
1169
1170 /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
1171 offset to the entry. */
1172 HOWTO (R_PPC_GOT_TPREL16,
1173 0, /* rightshift */
1174 1, /* size (0 = byte, 1 = short, 2 = long) */
1175 16, /* bitsize */
1176 FALSE, /* pc_relative */
1177 0, /* bitpos */
1178 complain_overflow_signed, /* complain_on_overflow */
1179 ppc_elf_unhandled_reloc, /* special_function */
1180 "R_PPC_GOT_TPREL16", /* name */
1181 FALSE, /* partial_inplace */
1182 0, /* src_mask */
1183 0xffff, /* dst_mask */
1184 FALSE), /* pcrel_offset */
1185
1186 /* Like GOT_TPREL16, but no overflow. */
1187 HOWTO (R_PPC_GOT_TPREL16_LO,
1188 0, /* rightshift */
1189 1, /* size (0 = byte, 1 = short, 2 = long) */
1190 16, /* bitsize */
1191 FALSE, /* pc_relative */
1192 0, /* bitpos */
1193 complain_overflow_dont, /* complain_on_overflow */
1194 ppc_elf_unhandled_reloc, /* special_function */
1195 "R_PPC_GOT_TPREL16_LO", /* name */
1196 FALSE, /* partial_inplace */
1197 0, /* src_mask */
1198 0xffff, /* dst_mask */
1199 FALSE), /* pcrel_offset */
1200
1201 /* Like GOT_TPREL16_LO, but next higher group of 16 bits. */
1202 HOWTO (R_PPC_GOT_TPREL16_HI,
1203 16, /* rightshift */
1204 1, /* size (0 = byte, 1 = short, 2 = long) */
1205 16, /* bitsize */
1206 FALSE, /* pc_relative */
1207 0, /* bitpos */
1208 complain_overflow_dont, /* complain_on_overflow */
1209 ppc_elf_unhandled_reloc, /* special_function */
1210 "R_PPC_GOT_TPREL16_HI", /* name */
1211 FALSE, /* partial_inplace */
1212 0, /* src_mask */
1213 0xffff, /* dst_mask */
1214 FALSE), /* pcrel_offset */
1215
1216 /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
1217 HOWTO (R_PPC_GOT_TPREL16_HA,
1218 16, /* rightshift */
1219 1, /* size (0 = byte, 1 = short, 2 = long) */
1220 16, /* bitsize */
1221 FALSE, /* pc_relative */
1222 0, /* bitpos */
1223 complain_overflow_dont, /* complain_on_overflow */
1224 ppc_elf_unhandled_reloc, /* special_function */
1225 "R_PPC_GOT_TPREL16_HA", /* name */
1226 FALSE, /* partial_inplace */
1227 0, /* src_mask */
1228 0xffff, /* dst_mask */
1229 FALSE), /* pcrel_offset */
1230
1231 /* The remaining relocs are from the Embedded ELF ABI, and are not
1232 in the SVR4 ELF ABI. */
1233
1234 /* 32 bit value resulting from the addend minus the symbol. */
1235 HOWTO (R_PPC_EMB_NADDR32, /* type */
1236 0, /* rightshift */
1237 2, /* size (0 = byte, 1 = short, 2 = long) */
1238 32, /* bitsize */
1239 FALSE, /* pc_relative */
1240 0, /* bitpos */
1241 complain_overflow_dont, /* complain_on_overflow */
1242 ppc_elf_unhandled_reloc, /* special_function */
1243 "R_PPC_EMB_NADDR32", /* name */
1244 FALSE, /* partial_inplace */
1245 0, /* src_mask */
1246 0xffffffff, /* dst_mask */
1247 FALSE), /* pcrel_offset */
1248
1249 /* 16 bit value resulting from the addend minus the symbol. */
1250 HOWTO (R_PPC_EMB_NADDR16, /* type */
1251 0, /* rightshift */
1252 1, /* size (0 = byte, 1 = short, 2 = long) */
1253 16, /* bitsize */
1254 FALSE, /* pc_relative */
1255 0, /* bitpos */
1256 complain_overflow_signed, /* complain_on_overflow */
1257 ppc_elf_unhandled_reloc, /* special_function */
1258 "R_PPC_EMB_NADDR16", /* name */
1259 FALSE, /* partial_inplace */
1260 0, /* src_mask */
1261 0xffff, /* dst_mask */
1262 FALSE), /* pcrel_offset */
1263
1264 /* 16 bit value resulting from the addend minus the symbol. */
1265 HOWTO (R_PPC_EMB_NADDR16_LO, /* type */
1266 0, /* rightshift */
1267 1, /* size (0 = byte, 1 = short, 2 = long) */
1268 16, /* bitsize */
1269 FALSE, /* pc_relative */
1270 0, /* bitpos */
1271 complain_overflow_dont,/* complain_on_overflow */
1272 ppc_elf_unhandled_reloc, /* special_function */
1273 "R_PPC_EMB_ADDR16_LO", /* name */
1274 FALSE, /* partial_inplace */
1275 0, /* src_mask */
1276 0xffff, /* dst_mask */
1277 FALSE), /* pcrel_offset */
1278
1279 /* The high order 16 bits of the addend minus the symbol. */
1280 HOWTO (R_PPC_EMB_NADDR16_HI, /* type */
1281 16, /* rightshift */
1282 1, /* size (0 = byte, 1 = short, 2 = long) */
1283 16, /* bitsize */
1284 FALSE, /* pc_relative */
1285 0, /* bitpos */
1286 complain_overflow_dont, /* complain_on_overflow */
1287 ppc_elf_unhandled_reloc, /* special_function */
1288 "R_PPC_EMB_NADDR16_HI", /* name */
1289 FALSE, /* partial_inplace */
1290 0, /* src_mask */
1291 0xffff, /* dst_mask */
1292 FALSE), /* pcrel_offset */
1293
1294 /* The high order 16 bits of the result of the addend minus the address,
1295 plus 1 if the contents of the low 16 bits, treated as a signed number,
1296 is negative. */
1297 HOWTO (R_PPC_EMB_NADDR16_HA, /* type */
1298 16, /* rightshift */
1299 1, /* size (0 = byte, 1 = short, 2 = long) */
1300 16, /* bitsize */
1301 FALSE, /* pc_relative */
1302 0, /* bitpos */
1303 complain_overflow_dont, /* complain_on_overflow */
1304 ppc_elf_unhandled_reloc, /* special_function */
1305 "R_PPC_EMB_NADDR16_HA", /* name */
1306 FALSE, /* partial_inplace */
1307 0, /* src_mask */
1308 0xffff, /* dst_mask */
1309 FALSE), /* pcrel_offset */
1310
1311 /* 16 bit value resulting from allocating a 4 byte word to hold an
1312 address in the .sdata section, and returning the offset from
1313 _SDA_BASE_ for that relocation. */
1314 HOWTO (R_PPC_EMB_SDAI16, /* type */
1315 0, /* rightshift */
1316 1, /* size (0 = byte, 1 = short, 2 = long) */
1317 16, /* bitsize */
1318 FALSE, /* pc_relative */
1319 0, /* bitpos */
1320 complain_overflow_signed, /* complain_on_overflow */
1321 ppc_elf_unhandled_reloc, /* special_function */
1322 "R_PPC_EMB_SDAI16", /* name */
1323 FALSE, /* partial_inplace */
1324 0, /* src_mask */
1325 0xffff, /* dst_mask */
1326 FALSE), /* pcrel_offset */
1327
1328 /* 16 bit value resulting from allocating a 4 byte word to hold an
1329 address in the .sdata2 section, and returning the offset from
1330 _SDA2_BASE_ for that relocation. */
1331 HOWTO (R_PPC_EMB_SDA2I16, /* type */
1332 0, /* rightshift */
1333 1, /* size (0 = byte, 1 = short, 2 = long) */
1334 16, /* bitsize */
1335 FALSE, /* pc_relative */
1336 0, /* bitpos */
1337 complain_overflow_signed, /* complain_on_overflow */
1338 ppc_elf_unhandled_reloc, /* special_function */
1339 "R_PPC_EMB_SDA2I16", /* name */
1340 FALSE, /* partial_inplace */
1341 0, /* src_mask */
1342 0xffff, /* dst_mask */
1343 FALSE), /* pcrel_offset */
1344
1345 /* A sign-extended 16 bit value relative to _SDA2_BASE_, for use with
1346 small data items. */
1347 HOWTO (R_PPC_EMB_SDA2REL, /* type */
1348 0, /* rightshift */
1349 1, /* size (0 = byte, 1 = short, 2 = long) */
1350 16, /* bitsize */
1351 FALSE, /* pc_relative */
1352 0, /* bitpos */
1353 complain_overflow_signed, /* complain_on_overflow */
1354 ppc_elf_unhandled_reloc, /* special_function */
1355 "R_PPC_EMB_SDA2REL", /* name */
1356 FALSE, /* partial_inplace */
1357 0, /* src_mask */
1358 0xffff, /* dst_mask */
1359 FALSE), /* pcrel_offset */
1360
1361 /* Relocate against either _SDA_BASE_ or _SDA2_BASE_, filling in the 16 bit
1362 signed offset from the appropriate base, and filling in the register
1363 field with the appropriate register (0, 2, or 13). */
1364 HOWTO (R_PPC_EMB_SDA21, /* type */
1365 0, /* rightshift */
1366 2, /* size (0 = byte, 1 = short, 2 = long) */
1367 16, /* bitsize */
1368 FALSE, /* pc_relative */
1369 0, /* bitpos */
1370 complain_overflow_signed, /* complain_on_overflow */
1371 ppc_elf_unhandled_reloc, /* special_function */
1372 "R_PPC_EMB_SDA21", /* name */
1373 FALSE, /* partial_inplace */
1374 0, /* src_mask */
1375 0xffff, /* dst_mask */
1376 FALSE), /* pcrel_offset */
1377
1378 /* Relocation not handled: R_PPC_EMB_MRKREF */
1379 /* Relocation not handled: R_PPC_EMB_RELSEC16 */
1380 /* Relocation not handled: R_PPC_EMB_RELST_LO */
1381 /* Relocation not handled: R_PPC_EMB_RELST_HI */
1382 /* Relocation not handled: R_PPC_EMB_RELST_HA */
1383 /* Relocation not handled: R_PPC_EMB_BIT_FLD */
1384
1385 /* PC relative relocation against either _SDA_BASE_ or _SDA2_BASE_, filling
1386 in the 16 bit signed offset from the appropriate base, and filling in the
1387 register field with the appropriate register (0, 2, or 13). */
1388 HOWTO (R_PPC_EMB_RELSDA, /* type */
1389 0, /* rightshift */
1390 1, /* size (0 = byte, 1 = short, 2 = long) */
1391 16, /* bitsize */
1392 FALSE, /* pc_relative */
1393 0, /* bitpos */
1394 complain_overflow_signed, /* complain_on_overflow */
1395 ppc_elf_unhandled_reloc, /* special_function */
1396 "R_PPC_EMB_RELSDA", /* name */
1397 FALSE, /* partial_inplace */
1398 0, /* src_mask */
1399 0xffff, /* dst_mask */
1400 FALSE), /* pcrel_offset */
1401
1402 /* A relative 8 bit branch. */
1403 HOWTO (R_PPC_VLE_REL8, /* type */
1404 1, /* rightshift */
1405 1, /* size (0 = byte, 1 = short, 2 = long) */
1406 8, /* bitsize */
1407 TRUE, /* pc_relative */
1408 0, /* bitpos */
1409 complain_overflow_signed, /* complain_on_overflow */
1410 bfd_elf_generic_reloc, /* special_function */
1411 "R_PPC_VLE_REL8", /* name */
1412 FALSE, /* partial_inplace */
1413 0, /* src_mask */
1414 0xff, /* dst_mask */
1415 TRUE), /* pcrel_offset */
1416
1417 /* A relative 15 bit branch. */
1418 HOWTO (R_PPC_VLE_REL15, /* type */
1419 1, /* rightshift */
1420 2, /* size (0 = byte, 1 = short, 2 = long) */
1421 15, /* bitsize */
1422 TRUE, /* pc_relative */
1423 1, /* bitpos */
1424 complain_overflow_signed, /* complain_on_overflow */
1425 bfd_elf_generic_reloc, /* special_function */
1426 "R_PPC_VLE_REL15", /* name */
1427 FALSE, /* partial_inplace */
1428 0, /* src_mask */
1429 0xfffe, /* dst_mask */
1430 TRUE), /* pcrel_offset */
1431
1432 /* A relative 24 bit branch. */
1433 HOWTO (R_PPC_VLE_REL24, /* type */
1434 1, /* rightshift */
1435 2, /* size (0 = byte, 1 = short, 2 = long) */
1436 24, /* bitsize */
1437 TRUE, /* pc_relative */
1438 1, /* bitpos */
1439 complain_overflow_signed, /* complain_on_overflow */
1440 bfd_elf_generic_reloc, /* special_function */
1441 "R_PPC_VLE_REL24", /* name */
1442 FALSE, /* partial_inplace */
1443 0, /* src_mask */
1444 0x1fffffe, /* dst_mask */
1445 TRUE), /* pcrel_offset */
1446
1447 /* The 16 LSBS in split16a format. */
1448 HOWTO (R_PPC_VLE_LO16A, /* type */
1449 0, /* rightshift */
1450 2, /* size (0 = byte, 1 = short, 2 = long) */
1451 16, /* bitsize */
1452 FALSE, /* pc_relative */
1453 0, /* bitpos */
1454 complain_overflow_dont, /* complain_on_overflow */
1455 ppc_elf_unhandled_reloc, /* special_function */
1456 "R_PPC_VLE_LO16A", /* name */
1457 FALSE, /* partial_inplace */
1458 0, /* src_mask */
1459 0x1f07ff, /* dst_mask */
1460 FALSE), /* pcrel_offset */
1461
1462 /* The 16 LSBS in split16d format. */
1463 HOWTO (R_PPC_VLE_LO16D, /* type */
1464 0, /* rightshift */
1465 2, /* size (0 = byte, 1 = short, 2 = long) */
1466 16, /* bitsize */
1467 FALSE, /* pc_relative */
1468 0, /* bitpos */
1469 complain_overflow_dont, /* complain_on_overflow */
1470 ppc_elf_unhandled_reloc, /* special_function */
1471 "R_PPC_VLE_LO16D", /* name */
1472 FALSE, /* partial_inplace */
1473 0, /* src_mask */
1474 0x3e007ff, /* dst_mask */
1475 FALSE), /* pcrel_offset */
1476
1477 /* Bits 16-31 split16a format. */
1478 HOWTO (R_PPC_VLE_HI16A, /* type */
1479 16, /* rightshift */
1480 2, /* size (0 = byte, 1 = short, 2 = long) */
1481 16, /* bitsize */
1482 FALSE, /* pc_relative */
1483 0, /* bitpos */
1484 complain_overflow_dont, /* complain_on_overflow */
1485 ppc_elf_unhandled_reloc, /* special_function */
1486 "R_PPC_VLE_HI16A", /* name */
1487 FALSE, /* partial_inplace */
1488 0, /* src_mask */
1489 0x1f07ff, /* dst_mask */
1490 FALSE), /* pcrel_offset */
1491
1492 /* Bits 16-31 split16d format. */
1493 HOWTO (R_PPC_VLE_HI16D, /* type */
1494 16, /* rightshift */
1495 2, /* size (0 = byte, 1 = short, 2 = long) */
1496 16, /* bitsize */
1497 FALSE, /* pc_relative */
1498 0, /* bitpos */
1499 complain_overflow_dont, /* complain_on_overflow */
1500 ppc_elf_unhandled_reloc, /* special_function */
1501 "R_PPC_VLE_HI16D", /* name */
1502 FALSE, /* partial_inplace */
1503 0, /* src_mask */
1504 0x3e007ff, /* dst_mask */
1505 FALSE), /* pcrel_offset */
1506
1507 /* Bits 16-31 (High Adjusted) in split16a format. */
1508 HOWTO (R_PPC_VLE_HA16A, /* type */
1509 16, /* rightshift */
1510 2, /* size (0 = byte, 1 = short, 2 = long) */
1511 16, /* bitsize */
1512 FALSE, /* pc_relative */
1513 0, /* bitpos */
1514 complain_overflow_dont, /* complain_on_overflow */
1515 ppc_elf_unhandled_reloc, /* special_function */
1516 "R_PPC_VLE_HA16A", /* name */
1517 FALSE, /* partial_inplace */
1518 0, /* src_mask */
1519 0x1f07ff, /* dst_mask */
1520 FALSE), /* pcrel_offset */
1521
1522 /* Bits 16-31 (High Adjusted) in split16d format. */
1523 HOWTO (R_PPC_VLE_HA16D, /* type */
1524 16, /* rightshift */
1525 2, /* size (0 = byte, 1 = short, 2 = long) */
1526 16, /* bitsize */
1527 FALSE, /* pc_relative */
1528 0, /* bitpos */
1529 complain_overflow_dont, /* complain_on_overflow */
1530 ppc_elf_unhandled_reloc, /* special_function */
1531 "R_PPC_VLE_HA16D", /* name */
1532 FALSE, /* partial_inplace */
1533 0, /* src_mask */
1534 0x3e007ff, /* dst_mask */
1535 FALSE), /* pcrel_offset */
1536
1537 /* This reloc is like R_PPC_EMB_SDA21 but only applies to e_add16i
1538 instructions. If the register base is 0 then the linker changes
1539 the e_add16i to an e_li instruction. */
1540 HOWTO (R_PPC_VLE_SDA21, /* type */
1541 0, /* rightshift */
1542 2, /* size (0 = byte, 1 = short, 2 = long) */
1543 16, /* bitsize */
1544 FALSE, /* pc_relative */
1545 0, /* bitpos */
1546 complain_overflow_signed, /* complain_on_overflow */
1547 ppc_elf_unhandled_reloc, /* special_function */
1548 "R_PPC_VLE_SDA21", /* name */
1549 FALSE, /* partial_inplace */
1550 0, /* src_mask */
1551 0xffff, /* dst_mask */
1552 FALSE), /* pcrel_offset */
1553
1554 /* Like R_PPC_VLE_SDA21 but ignore overflow. */
1555 HOWTO (R_PPC_VLE_SDA21_LO, /* type */
1556 0, /* rightshift */
1557 2, /* size (0 = byte, 1 = short, 2 = long) */
1558 16, /* bitsize */
1559 FALSE, /* pc_relative */
1560 0, /* bitpos */
1561 complain_overflow_dont, /* complain_on_overflow */
1562 ppc_elf_unhandled_reloc, /* special_function */
1563 "R_PPC_VLE_SDA21_LO", /* name */
1564 FALSE, /* partial_inplace */
1565 0, /* src_mask */
1566 0xffff, /* dst_mask */
1567 FALSE), /* pcrel_offset */
1568
1569 /* The 16 LSBS relative to _SDA_BASE_ in split16a format. */
1570 HOWTO (R_PPC_VLE_SDAREL_LO16A,/* type */
1571 0, /* rightshift */
1572 2, /* size (0 = byte, 1 = short, 2 = long) */
1573 16, /* bitsize */
1574 FALSE, /* pc_relative */
1575 0, /* bitpos */
1576 complain_overflow_dont, /* complain_on_overflow */
1577 ppc_elf_unhandled_reloc, /* special_function */
1578 "R_PPC_VLE_SDAREL_LO16A", /* name */
1579 FALSE, /* partial_inplace */
1580 0, /* src_mask */
1581 0x1f07ff, /* dst_mask */
1582 FALSE), /* pcrel_offset */
1583
1584 /* The 16 LSBS relative to _SDA_BASE_ in split16d format. */
1585 HOWTO (R_PPC_VLE_SDAREL_LO16D, /* type */
1586 0, /* rightshift */
1587 2, /* size (0 = byte, 1 = short, 2 = long) */
1588 16, /* bitsize */
1589 FALSE, /* pc_relative */
1590 0, /* bitpos */
1591 complain_overflow_dont, /* complain_on_overflow */
1592 ppc_elf_unhandled_reloc, /* special_function */
1593 "R_PPC_VLE_SDAREL_LO16D", /* name */
1594 FALSE, /* partial_inplace */
1595 0, /* src_mask */
1596 0x3e007ff, /* dst_mask */
1597 FALSE), /* pcrel_offset */
1598
1599 /* Bits 16-31 relative to _SDA_BASE_ in split16a format. */
1600 HOWTO (R_PPC_VLE_SDAREL_HI16A, /* type */
1601 16, /* rightshift */
1602 2, /* size (0 = byte, 1 = short, 2 = long) */
1603 16, /* bitsize */
1604 FALSE, /* pc_relative */
1605 0, /* bitpos */
1606 complain_overflow_dont, /* complain_on_overflow */
1607 ppc_elf_unhandled_reloc, /* special_function */
1608 "R_PPC_VLE_SDAREL_HI16A", /* name */
1609 FALSE, /* partial_inplace */
1610 0, /* src_mask */
1611 0x1f07ff, /* dst_mask */
1612 FALSE), /* pcrel_offset */
1613
1614 /* Bits 16-31 relative to _SDA_BASE_ in split16d format. */
1615 HOWTO (R_PPC_VLE_SDAREL_HI16D, /* type */
1616 16, /* rightshift */
1617 2, /* size (0 = byte, 1 = short, 2 = long) */
1618 16, /* bitsize */
1619 FALSE, /* pc_relative */
1620 0, /* bitpos */
1621 complain_overflow_dont, /* complain_on_overflow */
1622 ppc_elf_unhandled_reloc, /* special_function */
1623 "R_PPC_VLE_SDAREL_HI16D", /* name */
1624 FALSE, /* partial_inplace */
1625 0, /* src_mask */
1626 0x3e007ff, /* dst_mask */
1627 FALSE), /* pcrel_offset */
1628
1629 /* Bits 16-31 (HA) relative to _SDA_BASE split16a format. */
1630 HOWTO (R_PPC_VLE_SDAREL_HA16A, /* type */
1631 16, /* rightshift */
1632 2, /* size (0 = byte, 1 = short, 2 = long) */
1633 16, /* bitsize */
1634 FALSE, /* pc_relative */
1635 0, /* bitpos */
1636 complain_overflow_dont, /* complain_on_overflow */
1637 ppc_elf_unhandled_reloc, /* special_function */
1638 "R_PPC_VLE_SDAREL_HA16A", /* name */
1639 FALSE, /* partial_inplace */
1640 0, /* src_mask */
1641 0x1f07ff, /* dst_mask */
1642 FALSE), /* pcrel_offset */
1643
1644 /* Bits 16-31 (HA) relative to _SDA_BASE split16d format. */
1645 HOWTO (R_PPC_VLE_SDAREL_HA16D, /* type */
1646 16, /* rightshift */
1647 2, /* size (0 = byte, 1 = short, 2 = long) */
1648 16, /* bitsize */
1649 FALSE, /* pc_relative */
1650 0, /* bitpos */
1651 complain_overflow_dont, /* complain_on_overflow */
1652 ppc_elf_unhandled_reloc, /* special_function */
1653 "R_PPC_VLE_SDAREL_HA16D", /* name */
1654 FALSE, /* partial_inplace */
1655 0, /* src_mask */
1656 0x3e007ff, /* dst_mask */
1657 FALSE), /* pcrel_offset */
1658
1659 /* e_li split20 format. */
1660 HOWTO (R_PPC_VLE_ADDR20, /* type */
1661 16, /* rightshift */
1662 2, /* size (0 = byte, 1 = short, 2 = long) */
1663 20, /* bitsize */
1664 FALSE, /* pc_relative */
1665 0, /* bitpos */
1666 complain_overflow_dont, /* complain_on_overflow */
1667 bfd_elf_generic_reloc, /* special_function */
1668 "R_PPC_VLE_ADDR20", /* name */
1669 FALSE, /* partial_inplace */
1670 0, /* src_mask */
1671 0x1f07ff, /* dst_mask */
1672 FALSE), /* pcrel_offset */
1673
1674 HOWTO (R_PPC_IRELATIVE, /* type */
1675 0, /* rightshift */
1676 2, /* size (0 = byte, 1 = short, 2 = long) */
1677 32, /* bitsize */
1678 FALSE, /* pc_relative */
1679 0, /* bitpos */
1680 complain_overflow_dont, /* complain_on_overflow */
1681 ppc_elf_unhandled_reloc, /* special_function */
1682 "R_PPC_IRELATIVE", /* name */
1683 FALSE, /* partial_inplace */
1684 0, /* src_mask */
1685 0xffffffff, /* dst_mask */
1686 FALSE), /* pcrel_offset */
1687
1688 /* A 16 bit relative relocation. */
1689 HOWTO (R_PPC_REL16, /* type */
1690 0, /* rightshift */
1691 1, /* size (0 = byte, 1 = short, 2 = long) */
1692 16, /* bitsize */
1693 TRUE, /* pc_relative */
1694 0, /* bitpos */
1695 complain_overflow_signed, /* complain_on_overflow */
1696 bfd_elf_generic_reloc, /* special_function */
1697 "R_PPC_REL16", /* name */
1698 FALSE, /* partial_inplace */
1699 0, /* src_mask */
1700 0xffff, /* dst_mask */
1701 TRUE), /* pcrel_offset */
1702
1703 /* A 16 bit relative relocation without overflow. */
1704 HOWTO (R_PPC_REL16_LO, /* type */
1705 0, /* rightshift */
1706 1, /* size (0 = byte, 1 = short, 2 = long) */
1707 16, /* bitsize */
1708 TRUE, /* pc_relative */
1709 0, /* bitpos */
1710 complain_overflow_dont,/* complain_on_overflow */
1711 bfd_elf_generic_reloc, /* special_function */
1712 "R_PPC_REL16_LO", /* name */
1713 FALSE, /* partial_inplace */
1714 0, /* src_mask */
1715 0xffff, /* dst_mask */
1716 TRUE), /* pcrel_offset */
1717
1718 /* The high order 16 bits of a relative address. */
1719 HOWTO (R_PPC_REL16_HI, /* type */
1720 16, /* rightshift */
1721 1, /* size (0 = byte, 1 = short, 2 = long) */
1722 16, /* bitsize */
1723 TRUE, /* pc_relative */
1724 0, /* bitpos */
1725 complain_overflow_dont, /* complain_on_overflow */
1726 bfd_elf_generic_reloc, /* special_function */
1727 "R_PPC_REL16_HI", /* name */
1728 FALSE, /* partial_inplace */
1729 0, /* src_mask */
1730 0xffff, /* dst_mask */
1731 TRUE), /* pcrel_offset */
1732
1733 /* The high order 16 bits of a relative address, plus 1 if the contents of
1734 the low 16 bits, treated as a signed number, is negative. */
1735 HOWTO (R_PPC_REL16_HA, /* type */
1736 16, /* rightshift */
1737 1, /* size (0 = byte, 1 = short, 2 = long) */
1738 16, /* bitsize */
1739 TRUE, /* pc_relative */
1740 0, /* bitpos */
1741 complain_overflow_dont, /* complain_on_overflow */
1742 ppc_elf_addr16_ha_reloc, /* special_function */
1743 "R_PPC_REL16_HA", /* name */
1744 FALSE, /* partial_inplace */
1745 0, /* src_mask */
1746 0xffff, /* dst_mask */
1747 TRUE), /* pcrel_offset */
1748
1749 /* Like R_PPC_REL16_HA but for split field in addpcis. */
1750 HOWTO (R_PPC_REL16DX_HA, /* type */
1751 16, /* rightshift */
1752 2, /* size (0 = byte, 1 = short, 2 = long) */
1753 16, /* bitsize */
1754 TRUE, /* pc_relative */
1755 0, /* bitpos */
1756 complain_overflow_signed, /* complain_on_overflow */
1757 ppc_elf_addr16_ha_reloc, /* special_function */
1758 "R_PPC_REL16DX_HA", /* name */
1759 FALSE, /* partial_inplace */
1760 0, /* src_mask */
1761 0x1fffc1, /* dst_mask */
1762 TRUE), /* pcrel_offset */
1763
1764 /* A split-field reloc for addpcis, non-relative (gas internal use only). */
1765 HOWTO (R_PPC_16DX_HA, /* type */
1766 16, /* rightshift */
1767 2, /* size (0 = byte, 1 = short, 2 = long) */
1768 16, /* bitsize */
1769 FALSE, /* pc_relative */
1770 0, /* bitpos */
1771 complain_overflow_signed, /* complain_on_overflow */
1772 ppc_elf_addr16_ha_reloc, /* special_function */
1773 "R_PPC_16DX_HA", /* name */
1774 FALSE, /* partial_inplace */
1775 0, /* src_mask */
1776 0x1fffc1, /* dst_mask */
1777 FALSE), /* pcrel_offset */
1778
1779 /* GNU extension to record C++ vtable hierarchy. */
1780 HOWTO (R_PPC_GNU_VTINHERIT, /* type */
1781 0, /* rightshift */
1782 0, /* size (0 = byte, 1 = short, 2 = long) */
1783 0, /* bitsize */
1784 FALSE, /* pc_relative */
1785 0, /* bitpos */
1786 complain_overflow_dont, /* complain_on_overflow */
1787 NULL, /* special_function */
1788 "R_PPC_GNU_VTINHERIT", /* name */
1789 FALSE, /* partial_inplace */
1790 0, /* src_mask */
1791 0, /* dst_mask */
1792 FALSE), /* pcrel_offset */
1793
1794 /* GNU extension to record C++ vtable member usage. */
1795 HOWTO (R_PPC_GNU_VTENTRY, /* type */
1796 0, /* rightshift */
1797 0, /* size (0 = byte, 1 = short, 2 = long) */
1798 0, /* bitsize */
1799 FALSE, /* pc_relative */
1800 0, /* bitpos */
1801 complain_overflow_dont, /* complain_on_overflow */
1802 NULL, /* special_function */
1803 "R_PPC_GNU_VTENTRY", /* name */
1804 FALSE, /* partial_inplace */
1805 0, /* src_mask */
1806 0, /* dst_mask */
1807 FALSE), /* pcrel_offset */
1808
1809 /* Phony reloc to handle AIX style TOC entries. */
1810 HOWTO (R_PPC_TOC16, /* type */
1811 0, /* rightshift */
1812 1, /* size (0 = byte, 1 = short, 2 = long) */
1813 16, /* bitsize */
1814 FALSE, /* pc_relative */
1815 0, /* bitpos */
1816 complain_overflow_signed, /* complain_on_overflow */
1817 ppc_elf_unhandled_reloc, /* special_function */
1818 "R_PPC_TOC16", /* name */
1819 FALSE, /* partial_inplace */
1820 0, /* src_mask */
1821 0xffff, /* dst_mask */
1822 FALSE), /* pcrel_offset */
1823 };
1824 \f
1825 /* Initialize the ppc_elf_howto_table, so that linear accesses can be done. */
1826
1827 static void
1828 ppc_elf_howto_init (void)
1829 {
1830 unsigned int i, type;
1831
1832 for (i = 0;
1833 i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]);
1834 i++)
1835 {
1836 type = ppc_elf_howto_raw[i].type;
1837 if (type >= (sizeof (ppc_elf_howto_table)
1838 / sizeof (ppc_elf_howto_table[0])))
1839 abort ();
1840 ppc_elf_howto_table[type] = &ppc_elf_howto_raw[i];
1841 }
1842 }
1843
1844 static reloc_howto_type *
1845 ppc_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1846 bfd_reloc_code_real_type code)
1847 {
1848 enum elf_ppc_reloc_type r;
1849
1850 /* Initialize howto table if not already done. */
1851 if (!ppc_elf_howto_table[R_PPC_ADDR32])
1852 ppc_elf_howto_init ();
1853
1854 switch (code)
1855 {
1856 default:
1857 return NULL;
1858
1859 case BFD_RELOC_NONE: r = R_PPC_NONE; break;
1860 case BFD_RELOC_32: r = R_PPC_ADDR32; break;
1861 case BFD_RELOC_PPC_BA26: r = R_PPC_ADDR24; break;
1862 case BFD_RELOC_PPC64_ADDR16_DS:
1863 case BFD_RELOC_16: r = R_PPC_ADDR16; break;
1864 case BFD_RELOC_PPC64_ADDR16_LO_DS:
1865 case BFD_RELOC_LO16: r = R_PPC_ADDR16_LO; break;
1866 case BFD_RELOC_HI16: r = R_PPC_ADDR16_HI; break;
1867 case BFD_RELOC_HI16_S: r = R_PPC_ADDR16_HA; break;
1868 case BFD_RELOC_PPC_BA16: r = R_PPC_ADDR14; break;
1869 case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC_ADDR14_BRTAKEN; break;
1870 case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC_ADDR14_BRNTAKEN; break;
1871 case BFD_RELOC_PPC_B26: r = R_PPC_REL24; break;
1872 case BFD_RELOC_PPC_B16: r = R_PPC_REL14; break;
1873 case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC_REL14_BRTAKEN; break;
1874 case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC_REL14_BRNTAKEN; break;
1875 case BFD_RELOC_PPC64_GOT16_DS:
1876 case BFD_RELOC_16_GOTOFF: r = R_PPC_GOT16; break;
1877 case BFD_RELOC_PPC64_GOT16_LO_DS:
1878 case BFD_RELOC_LO16_GOTOFF: r = R_PPC_GOT16_LO; break;
1879 case BFD_RELOC_HI16_GOTOFF: r = R_PPC_GOT16_HI; break;
1880 case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC_GOT16_HA; break;
1881 case BFD_RELOC_24_PLT_PCREL: r = R_PPC_PLTREL24; break;
1882 case BFD_RELOC_PPC_COPY: r = R_PPC_COPY; break;
1883 case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC_GLOB_DAT; break;
1884 case BFD_RELOC_PPC_LOCAL24PC: r = R_PPC_LOCAL24PC; break;
1885 case BFD_RELOC_32_PCREL: r = R_PPC_REL32; break;
1886 case BFD_RELOC_32_PLTOFF: r = R_PPC_PLT32; break;
1887 case BFD_RELOC_32_PLT_PCREL: r = R_PPC_PLTREL32; break;
1888 case BFD_RELOC_PPC64_PLT16_LO_DS:
1889 case BFD_RELOC_LO16_PLTOFF: r = R_PPC_PLT16_LO; break;
1890 case BFD_RELOC_HI16_PLTOFF: r = R_PPC_PLT16_HI; break;
1891 case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC_PLT16_HA; break;
1892 case BFD_RELOC_GPREL16: r = R_PPC_SDAREL16; break;
1893 case BFD_RELOC_PPC64_SECTOFF_DS:
1894 case BFD_RELOC_16_BASEREL: r = R_PPC_SECTOFF; break;
1895 case BFD_RELOC_PPC64_SECTOFF_LO_DS:
1896 case BFD_RELOC_LO16_BASEREL: r = R_PPC_SECTOFF_LO; break;
1897 case BFD_RELOC_HI16_BASEREL: r = R_PPC_SECTOFF_HI; break;
1898 case BFD_RELOC_HI16_S_BASEREL: r = R_PPC_SECTOFF_HA; break;
1899 case BFD_RELOC_CTOR: r = R_PPC_ADDR32; break;
1900 case BFD_RELOC_PPC64_TOC16_DS:
1901 case BFD_RELOC_PPC_TOC16: r = R_PPC_TOC16; break;
1902 case BFD_RELOC_PPC_TLS: r = R_PPC_TLS; break;
1903 case BFD_RELOC_PPC_TLSGD: r = R_PPC_TLSGD; break;
1904 case BFD_RELOC_PPC_TLSLD: r = R_PPC_TLSLD; break;
1905 case BFD_RELOC_PPC_DTPMOD: r = R_PPC_DTPMOD32; break;
1906 case BFD_RELOC_PPC64_TPREL16_DS:
1907 case BFD_RELOC_PPC_TPREL16: r = R_PPC_TPREL16; break;
1908 case BFD_RELOC_PPC64_TPREL16_LO_DS:
1909 case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC_TPREL16_LO; break;
1910 case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC_TPREL16_HI; break;
1911 case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC_TPREL16_HA; break;
1912 case BFD_RELOC_PPC_TPREL: r = R_PPC_TPREL32; break;
1913 case BFD_RELOC_PPC64_DTPREL16_DS:
1914 case BFD_RELOC_PPC_DTPREL16: r = R_PPC_DTPREL16; break;
1915 case BFD_RELOC_PPC64_DTPREL16_LO_DS:
1916 case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC_DTPREL16_LO; break;
1917 case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC_DTPREL16_HI; break;
1918 case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC_DTPREL16_HA; break;
1919 case BFD_RELOC_PPC_DTPREL: r = R_PPC_DTPREL32; break;
1920 case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC_GOT_TLSGD16; break;
1921 case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC_GOT_TLSGD16_LO; break;
1922 case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC_GOT_TLSGD16_HI; break;
1923 case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC_GOT_TLSGD16_HA; break;
1924 case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC_GOT_TLSLD16; break;
1925 case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC_GOT_TLSLD16_LO; break;
1926 case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC_GOT_TLSLD16_HI; break;
1927 case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC_GOT_TLSLD16_HA; break;
1928 case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC_GOT_TPREL16; break;
1929 case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC_GOT_TPREL16_LO; break;
1930 case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC_GOT_TPREL16_HI; break;
1931 case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC_GOT_TPREL16_HA; break;
1932 case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC_GOT_DTPREL16; break;
1933 case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC_GOT_DTPREL16_LO; break;
1934 case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC_GOT_DTPREL16_HI; break;
1935 case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC_GOT_DTPREL16_HA; break;
1936 case BFD_RELOC_PPC_EMB_NADDR32: r = R_PPC_EMB_NADDR32; break;
1937 case BFD_RELOC_PPC_EMB_NADDR16: r = R_PPC_EMB_NADDR16; break;
1938 case BFD_RELOC_PPC_EMB_NADDR16_LO: r = R_PPC_EMB_NADDR16_LO; break;
1939 case BFD_RELOC_PPC_EMB_NADDR16_HI: r = R_PPC_EMB_NADDR16_HI; break;
1940 case BFD_RELOC_PPC_EMB_NADDR16_HA: r = R_PPC_EMB_NADDR16_HA; break;
1941 case BFD_RELOC_PPC_EMB_SDAI16: r = R_PPC_EMB_SDAI16; break;
1942 case BFD_RELOC_PPC_EMB_SDA2I16: r = R_PPC_EMB_SDA2I16; break;
1943 case BFD_RELOC_PPC_EMB_SDA2REL: r = R_PPC_EMB_SDA2REL; break;
1944 case BFD_RELOC_PPC_EMB_SDA21: r = R_PPC_EMB_SDA21; break;
1945 case BFD_RELOC_PPC_EMB_MRKREF: r = R_PPC_EMB_MRKREF; break;
1946 case BFD_RELOC_PPC_EMB_RELSEC16: r = R_PPC_EMB_RELSEC16; break;
1947 case BFD_RELOC_PPC_EMB_RELST_LO: r = R_PPC_EMB_RELST_LO; break;
1948 case BFD_RELOC_PPC_EMB_RELST_HI: r = R_PPC_EMB_RELST_HI; break;
1949 case BFD_RELOC_PPC_EMB_RELST_HA: r = R_PPC_EMB_RELST_HA; break;
1950 case BFD_RELOC_PPC_EMB_BIT_FLD: r = R_PPC_EMB_BIT_FLD; break;
1951 case BFD_RELOC_PPC_EMB_RELSDA: r = R_PPC_EMB_RELSDA; break;
1952 case BFD_RELOC_PPC_VLE_REL8: r = R_PPC_VLE_REL8; break;
1953 case BFD_RELOC_PPC_VLE_REL15: r = R_PPC_VLE_REL15; break;
1954 case BFD_RELOC_PPC_VLE_REL24: r = R_PPC_VLE_REL24; break;
1955 case BFD_RELOC_PPC_VLE_LO16A: r = R_PPC_VLE_LO16A; break;
1956 case BFD_RELOC_PPC_VLE_LO16D: r = R_PPC_VLE_LO16D; break;
1957 case BFD_RELOC_PPC_VLE_HI16A: r = R_PPC_VLE_HI16A; break;
1958 case BFD_RELOC_PPC_VLE_HI16D: r = R_PPC_VLE_HI16D; break;
1959 case BFD_RELOC_PPC_VLE_HA16A: r = R_PPC_VLE_HA16A; break;
1960 case BFD_RELOC_PPC_VLE_HA16D: r = R_PPC_VLE_HA16D; break;
1961 case BFD_RELOC_PPC_VLE_SDA21: r = R_PPC_VLE_SDA21; break;
1962 case BFD_RELOC_PPC_VLE_SDA21_LO: r = R_PPC_VLE_SDA21_LO; break;
1963 case BFD_RELOC_PPC_VLE_SDAREL_LO16A:
1964 r = R_PPC_VLE_SDAREL_LO16A;
1965 break;
1966 case BFD_RELOC_PPC_VLE_SDAREL_LO16D:
1967 r = R_PPC_VLE_SDAREL_LO16D;
1968 break;
1969 case BFD_RELOC_PPC_VLE_SDAREL_HI16A:
1970 r = R_PPC_VLE_SDAREL_HI16A;
1971 break;
1972 case BFD_RELOC_PPC_VLE_SDAREL_HI16D:
1973 r = R_PPC_VLE_SDAREL_HI16D;
1974 break;
1975 case BFD_RELOC_PPC_VLE_SDAREL_HA16A:
1976 r = R_PPC_VLE_SDAREL_HA16A;
1977 break;
1978 case BFD_RELOC_PPC_VLE_SDAREL_HA16D:
1979 r = R_PPC_VLE_SDAREL_HA16D;
1980 break;
1981 case BFD_RELOC_16_PCREL: r = R_PPC_REL16; break;
1982 case BFD_RELOC_LO16_PCREL: r = R_PPC_REL16_LO; break;
1983 case BFD_RELOC_HI16_PCREL: r = R_PPC_REL16_HI; break;
1984 case BFD_RELOC_HI16_S_PCREL: r = R_PPC_REL16_HA; break;
1985 case BFD_RELOC_PPC_16DX_HA: r = R_PPC_16DX_HA; break;
1986 case BFD_RELOC_PPC_REL16DX_HA: r = R_PPC_REL16DX_HA; break;
1987 case BFD_RELOC_VTABLE_INHERIT: r = R_PPC_GNU_VTINHERIT; break;
1988 case BFD_RELOC_VTABLE_ENTRY: r = R_PPC_GNU_VTENTRY; break;
1989 }
1990
1991 return ppc_elf_howto_table[r];
1992 };
1993
1994 static reloc_howto_type *
1995 ppc_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1996 const char *r_name)
1997 {
1998 unsigned int i;
1999
2000 for (i = 0;
2001 i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]);
2002 i++)
2003 if (ppc_elf_howto_raw[i].name != NULL
2004 && strcasecmp (ppc_elf_howto_raw[i].name, r_name) == 0)
2005 return &ppc_elf_howto_raw[i];
2006
2007 return NULL;
2008 }
2009
2010 /* Set the howto pointer for a PowerPC ELF reloc. */
2011
2012 static void
2013 ppc_elf_info_to_howto (bfd *abfd,
2014 arelent *cache_ptr,
2015 Elf_Internal_Rela *dst)
2016 {
2017 unsigned int r_type;
2018
2019 /* Initialize howto table if not already done. */
2020 if (!ppc_elf_howto_table[R_PPC_ADDR32])
2021 ppc_elf_howto_init ();
2022
2023 r_type = ELF32_R_TYPE (dst->r_info);
2024 if (r_type >= R_PPC_max)
2025 {
2026 /* xgettext:c-format */
2027 _bfd_error_handler (_("%B: unrecognised PPC reloc number: %d"),
2028 abfd, r_type);
2029 bfd_set_error (bfd_error_bad_value);
2030 r_type = R_PPC_NONE;
2031 }
2032 cache_ptr->howto = ppc_elf_howto_table[r_type];
2033
2034 /* Just because the above assert didn't trigger doesn't mean that
2035 ELF32_R_TYPE (dst->r_info) is necessarily a valid relocation. */
2036 if (!cache_ptr->howto)
2037 {
2038 /* xgettext:c-format */
2039 _bfd_error_handler (_("%B: invalid relocation type %d"),
2040 abfd, r_type);
2041 bfd_set_error (bfd_error_bad_value);
2042
2043 cache_ptr->howto = ppc_elf_howto_table[R_PPC_NONE];
2044 }
2045 }
2046
2047 /* Handle the R_PPC_ADDR16_HA and R_PPC_REL16_HA relocs. */
2048
2049 static bfd_reloc_status_type
2050 ppc_elf_addr16_ha_reloc (bfd *abfd,
2051 arelent *reloc_entry,
2052 asymbol *symbol,
2053 void *data,
2054 asection *input_section,
2055 bfd *output_bfd,
2056 char **error_message ATTRIBUTE_UNUSED)
2057 {
2058 enum elf_ppc_reloc_type r_type;
2059 long insn;
2060 bfd_size_type octets;
2061 bfd_vma value;
2062
2063 if (output_bfd != NULL)
2064 {
2065 reloc_entry->address += input_section->output_offset;
2066 return bfd_reloc_ok;
2067 }
2068
2069 reloc_entry->addend += 0x8000;
2070 r_type = reloc_entry->howto->type;
2071 if (r_type != R_PPC_REL16DX_HA)
2072 return bfd_reloc_continue;
2073
2074 value = 0;
2075 if (!bfd_is_com_section (symbol->section))
2076 value = symbol->value;
2077 value += (reloc_entry->addend
2078 + symbol->section->output_offset
2079 + symbol->section->output_section->vma);
2080 value -= (reloc_entry->address
2081 + input_section->output_offset
2082 + input_section->output_section->vma);
2083 value >>= 16;
2084
2085 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
2086 insn = bfd_get_32 (abfd, (bfd_byte *) data + octets);
2087 insn &= ~0x1fffc1;
2088 insn |= (value & 0xffc1) | ((value & 0x3e) << 15);
2089 bfd_put_32 (abfd, insn, (bfd_byte *) data + octets);
2090 return bfd_reloc_ok;
2091 }
2092
2093 static bfd_reloc_status_type
2094 ppc_elf_unhandled_reloc (bfd *abfd,
2095 arelent *reloc_entry,
2096 asymbol *symbol,
2097 void *data,
2098 asection *input_section,
2099 bfd *output_bfd,
2100 char **error_message)
2101 {
2102 /* If this is a relocatable link (output_bfd test tells us), just
2103 call the generic function. Any adjustment will be done at final
2104 link time. */
2105 if (output_bfd != NULL)
2106 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2107 input_section, output_bfd, error_message);
2108
2109 if (error_message != NULL)
2110 {
2111 static char buf[60];
2112 sprintf (buf, _("generic linker can't handle %s"),
2113 reloc_entry->howto->name);
2114 *error_message = buf;
2115 }
2116 return bfd_reloc_dangerous;
2117 }
2118 \f
2119 /* Sections created by the linker. */
2120
2121 typedef struct elf_linker_section
2122 {
2123 /* Pointer to the bfd section. */
2124 asection *section;
2125 /* Section name. */
2126 const char *name;
2127 /* Associated bss section name. */
2128 const char *bss_name;
2129 /* Associated symbol name. */
2130 const char *sym_name;
2131 /* Associated symbol. */
2132 struct elf_link_hash_entry *sym;
2133 } elf_linker_section_t;
2134
2135 /* Linked list of allocated pointer entries. This hangs off of the
2136 symbol lists, and provides allows us to return different pointers,
2137 based on different addend's. */
2138
2139 typedef struct elf_linker_section_pointers
2140 {
2141 /* next allocated pointer for this symbol */
2142 struct elf_linker_section_pointers *next;
2143 /* offset of pointer from beginning of section */
2144 bfd_vma offset;
2145 /* addend used */
2146 bfd_vma addend;
2147 /* which linker section this is */
2148 elf_linker_section_t *lsect;
2149 } elf_linker_section_pointers_t;
2150
2151 struct ppc_elf_obj_tdata
2152 {
2153 struct elf_obj_tdata elf;
2154
2155 /* A mapping from local symbols to offsets into the various linker
2156 sections added. This is index by the symbol index. */
2157 elf_linker_section_pointers_t **linker_section_pointers;
2158
2159 /* Flags used to auto-detect plt type. */
2160 unsigned int makes_plt_call : 1;
2161 unsigned int has_rel16 : 1;
2162 };
2163
2164 #define ppc_elf_tdata(bfd) \
2165 ((struct ppc_elf_obj_tdata *) (bfd)->tdata.any)
2166
2167 #define elf_local_ptr_offsets(bfd) \
2168 (ppc_elf_tdata (bfd)->linker_section_pointers)
2169
2170 #define is_ppc_elf(bfd) \
2171 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
2172 && elf_object_id (bfd) == PPC32_ELF_DATA)
2173
2174 /* Override the generic function because we store some extras. */
2175
2176 static bfd_boolean
2177 ppc_elf_mkobject (bfd *abfd)
2178 {
2179 return bfd_elf_allocate_object (abfd, sizeof (struct ppc_elf_obj_tdata),
2180 PPC32_ELF_DATA);
2181 }
2182
2183 /* When defaulting arch/mach, decode apuinfo to find a better match. */
2184
2185 bfd_boolean
2186 _bfd_elf_ppc_set_arch (bfd *abfd)
2187 {
2188 unsigned long mach = 0;
2189 asection *s;
2190 unsigned char *contents;
2191
2192 if (abfd->arch_info->bits_per_word == 32
2193 && bfd_big_endian (abfd))
2194 {
2195
2196 for (s = abfd->sections; s != NULL; s = s->next)
2197 if ((elf_section_data (s)->this_hdr.sh_flags & SHF_PPC_VLE) != 0)
2198 break;
2199 if (s != NULL)
2200 mach = bfd_mach_ppc_vle;
2201 }
2202
2203 if (mach == 0)
2204 {
2205 s = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2206 if (s != NULL && bfd_malloc_and_get_section (abfd, s, &contents))
2207 {
2208 unsigned int apuinfo_size = bfd_get_32 (abfd, contents + 4);
2209 unsigned int i;
2210
2211 for (i = 20; i < apuinfo_size + 20 && i + 4 <= s->size; i += 4)
2212 {
2213 unsigned int val = bfd_get_32 (abfd, contents + i);
2214 switch (val >> 16)
2215 {
2216 case PPC_APUINFO_PMR:
2217 case PPC_APUINFO_RFMCI:
2218 if (mach == 0)
2219 mach = bfd_mach_ppc_titan;
2220 break;
2221
2222 case PPC_APUINFO_ISEL:
2223 case PPC_APUINFO_CACHELCK:
2224 if (mach == bfd_mach_ppc_titan)
2225 mach = bfd_mach_ppc_e500mc;
2226 break;
2227
2228 case PPC_APUINFO_SPE:
2229 case PPC_APUINFO_EFS:
2230 case PPC_APUINFO_BRLOCK:
2231 if (mach != bfd_mach_ppc_vle)
2232 mach = bfd_mach_ppc_e500;
2233 break;
2234
2235 case PPC_APUINFO_VLE:
2236 mach = bfd_mach_ppc_vle;
2237 break;
2238
2239 default:
2240 mach = -1ul;
2241 }
2242 }
2243 free (contents);
2244 }
2245 }
2246
2247 if (mach != 0 && mach != -1ul)
2248 {
2249 const bfd_arch_info_type *arch;
2250
2251 for (arch = abfd->arch_info->next; arch; arch = arch->next)
2252 if (arch->mach == mach)
2253 {
2254 abfd->arch_info = arch;
2255 break;
2256 }
2257 }
2258 return TRUE;
2259 }
2260
2261 /* Fix bad default arch selected for a 32 bit input bfd when the
2262 default is 64 bit. Also select arch based on apuinfo. */
2263
2264 static bfd_boolean
2265 ppc_elf_object_p (bfd *abfd)
2266 {
2267 if (!abfd->arch_info->the_default)
2268 return TRUE;
2269
2270 if (abfd->arch_info->bits_per_word == 64)
2271 {
2272 Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd);
2273
2274 if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS32)
2275 {
2276 /* Relies on arch after 64 bit default being 32 bit default. */
2277 abfd->arch_info = abfd->arch_info->next;
2278 BFD_ASSERT (abfd->arch_info->bits_per_word == 32);
2279 }
2280 }
2281 return _bfd_elf_ppc_set_arch (abfd);
2282 }
2283
2284 /* Function to set whether a module needs the -mrelocatable bit set. */
2285
2286 static bfd_boolean
2287 ppc_elf_set_private_flags (bfd *abfd, flagword flags)
2288 {
2289 BFD_ASSERT (!elf_flags_init (abfd)
2290 || elf_elfheader (abfd)->e_flags == flags);
2291
2292 elf_elfheader (abfd)->e_flags = flags;
2293 elf_flags_init (abfd) = TRUE;
2294 return TRUE;
2295 }
2296
2297 /* Support for core dump NOTE sections. */
2298
2299 static bfd_boolean
2300 ppc_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
2301 {
2302 int offset;
2303 unsigned int size;
2304
2305 switch (note->descsz)
2306 {
2307 default:
2308 return FALSE;
2309
2310 case 268: /* Linux/PPC. */
2311 /* pr_cursig */
2312 elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12);
2313
2314 /* pr_pid */
2315 elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 24);
2316
2317 /* pr_reg */
2318 offset = 72;
2319 size = 192;
2320
2321 break;
2322 }
2323
2324 /* Make a ".reg/999" section. */
2325 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
2326 size, note->descpos + offset);
2327 }
2328
2329 static bfd_boolean
2330 ppc_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
2331 {
2332 switch (note->descsz)
2333 {
2334 default:
2335 return FALSE;
2336
2337 case 128: /* Linux/PPC elf_prpsinfo. */
2338 elf_tdata (abfd)->core->pid
2339 = bfd_get_32 (abfd, note->descdata + 16);
2340 elf_tdata (abfd)->core->program
2341 = _bfd_elfcore_strndup (abfd, note->descdata + 32, 16);
2342 elf_tdata (abfd)->core->command
2343 = _bfd_elfcore_strndup (abfd, note->descdata + 48, 80);
2344 }
2345
2346 /* Note that for some reason, a spurious space is tacked
2347 onto the end of the args in some (at least one anyway)
2348 implementations, so strip it off if it exists. */
2349
2350 {
2351 char *command = elf_tdata (abfd)->core->command;
2352 int n = strlen (command);
2353
2354 if (0 < n && command[n - 1] == ' ')
2355 command[n - 1] = '\0';
2356 }
2357
2358 return TRUE;
2359 }
2360
2361 static char *
2362 ppc_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type, ...)
2363 {
2364 switch (note_type)
2365 {
2366 default:
2367 return NULL;
2368
2369 case NT_PRPSINFO:
2370 {
2371 char data[128];
2372 va_list ap;
2373
2374 va_start (ap, note_type);
2375 memset (data, 0, sizeof (data));
2376 strncpy (data + 32, va_arg (ap, const char *), 16);
2377 strncpy (data + 48, va_arg (ap, const char *), 80);
2378 va_end (ap);
2379 return elfcore_write_note (abfd, buf, bufsiz,
2380 "CORE", note_type, data, sizeof (data));
2381 }
2382
2383 case NT_PRSTATUS:
2384 {
2385 char data[268];
2386 va_list ap;
2387 long pid;
2388 int cursig;
2389 const void *greg;
2390
2391 va_start (ap, note_type);
2392 memset (data, 0, 72);
2393 pid = va_arg (ap, long);
2394 bfd_put_32 (abfd, pid, data + 24);
2395 cursig = va_arg (ap, int);
2396 bfd_put_16 (abfd, cursig, data + 12);
2397 greg = va_arg (ap, const void *);
2398 memcpy (data + 72, greg, 192);
2399 memset (data + 264, 0, 4);
2400 va_end (ap);
2401 return elfcore_write_note (abfd, buf, bufsiz,
2402 "CORE", note_type, data, sizeof (data));
2403 }
2404 }
2405 }
2406
2407 static flagword
2408 ppc_elf_lookup_section_flags (char *flag_name)
2409 {
2410
2411 if (!strcmp (flag_name, "SHF_PPC_VLE"))
2412 return SHF_PPC_VLE;
2413
2414 return 0;
2415 }
2416
2417 /* Return address for Ith PLT stub in section PLT, for relocation REL
2418 or (bfd_vma) -1 if it should not be included. */
2419
2420 static bfd_vma
2421 ppc_elf_plt_sym_val (bfd_vma i ATTRIBUTE_UNUSED,
2422 const asection *plt ATTRIBUTE_UNUSED,
2423 const arelent *rel)
2424 {
2425 return rel->address;
2426 }
2427
2428 /* Handle a PowerPC specific section when reading an object file. This
2429 is called when bfd_section_from_shdr finds a section with an unknown
2430 type. */
2431
2432 static bfd_boolean
2433 ppc_elf_section_from_shdr (bfd *abfd,
2434 Elf_Internal_Shdr *hdr,
2435 const char *name,
2436 int shindex)
2437 {
2438 asection *newsect;
2439 flagword flags;
2440
2441 if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
2442 return FALSE;
2443
2444 newsect = hdr->bfd_section;
2445 flags = bfd_get_section_flags (abfd, newsect);
2446 if (hdr->sh_flags & SHF_EXCLUDE)
2447 flags |= SEC_EXCLUDE;
2448
2449 if (hdr->sh_type == SHT_ORDERED)
2450 flags |= SEC_SORT_ENTRIES;
2451
2452 bfd_set_section_flags (abfd, newsect, flags);
2453 return TRUE;
2454 }
2455
2456 /* Set up any other section flags and such that may be necessary. */
2457
2458 static bfd_boolean
2459 ppc_elf_fake_sections (bfd *abfd ATTRIBUTE_UNUSED,
2460 Elf_Internal_Shdr *shdr,
2461 asection *asect)
2462 {
2463 if ((asect->flags & SEC_SORT_ENTRIES) != 0)
2464 shdr->sh_type = SHT_ORDERED;
2465
2466 return TRUE;
2467 }
2468
2469 /* If we have .sbss2 or .PPC.EMB.sbss0 output sections, we
2470 need to bump up the number of section headers. */
2471
2472 static int
2473 ppc_elf_additional_program_headers (bfd *abfd,
2474 struct bfd_link_info *info ATTRIBUTE_UNUSED)
2475 {
2476 asection *s;
2477 int ret = 0;
2478
2479 s = bfd_get_section_by_name (abfd, ".sbss2");
2480 if (s != NULL && (s->flags & SEC_ALLOC) != 0)
2481 ++ret;
2482
2483 s = bfd_get_section_by_name (abfd, ".PPC.EMB.sbss0");
2484 if (s != NULL && (s->flags & SEC_ALLOC) != 0)
2485 ++ret;
2486
2487 return ret;
2488 }
2489
2490 /* Modify the segment map for VLE executables. */
2491
2492 bfd_boolean
2493 ppc_elf_modify_segment_map (bfd *abfd,
2494 struct bfd_link_info *info ATTRIBUTE_UNUSED)
2495 {
2496 struct elf_segment_map *m;
2497
2498 /* At this point in the link, output sections have already been sorted by
2499 LMA and assigned to segments. All that is left to do is to ensure
2500 there is no mixing of VLE & non-VLE sections in a text segment.
2501 If we find that case, we split the segment.
2502 We maintain the original output section order. */
2503
2504 for (m = elf_seg_map (abfd); m != NULL; m = m->next)
2505 {
2506 struct elf_segment_map *n;
2507 bfd_size_type amt;
2508 unsigned int j, k;
2509 unsigned int p_flags;
2510
2511 if (m->p_type != PT_LOAD || m->count == 0)
2512 continue;
2513
2514 for (p_flags = PF_R, j = 0; j != m->count; ++j)
2515 {
2516 if ((m->sections[j]->flags & SEC_READONLY) == 0)
2517 p_flags |= PF_W;
2518 if ((m->sections[j]->flags & SEC_CODE) != 0)
2519 {
2520 p_flags |= PF_X;
2521 if ((elf_section_flags (m->sections[j]) & SHF_PPC_VLE) != 0)
2522 p_flags |= PF_PPC_VLE;
2523 break;
2524 }
2525 }
2526 if (j != m->count)
2527 while (++j != m->count)
2528 {
2529 unsigned int p_flags1 = PF_R;
2530
2531 if ((m->sections[j]->flags & SEC_READONLY) == 0)
2532 p_flags1 |= PF_W;
2533 if ((m->sections[j]->flags & SEC_CODE) != 0)
2534 {
2535 p_flags1 |= PF_X;
2536 if ((elf_section_flags (m->sections[j]) & SHF_PPC_VLE) != 0)
2537 p_flags1 |= PF_PPC_VLE;
2538 if (((p_flags1 ^ p_flags) & PF_PPC_VLE) != 0)
2539 break;
2540 }
2541 p_flags |= p_flags1;
2542 }
2543 /* If we're splitting a segment which originally contained rw
2544 sections then those sections might now only be in one of the
2545 two parts. So always set p_flags if splitting, even if we
2546 are being called for objcopy with p_flags_valid set. */
2547 if (j != m->count || !m->p_flags_valid)
2548 {
2549 m->p_flags_valid = 1;
2550 m->p_flags = p_flags;
2551 }
2552 if (j == m->count)
2553 continue;
2554
2555 /* Sections 0..j-1 stay in this (current) segment,
2556 the remainder are put in a new segment.
2557 The scan resumes with the new segment. */
2558
2559 amt = sizeof (struct elf_segment_map);
2560 amt += (m->count - j - 1) * sizeof (asection *);
2561 n = (struct elf_segment_map *) bfd_zalloc (abfd, amt);
2562 if (n == NULL)
2563 return FALSE;
2564
2565 n->p_type = PT_LOAD;
2566 n->count = m->count - j;
2567 for (k = 0; k < n->count; ++k)
2568 n->sections[k] = m->sections[j + k];
2569 m->count = j;
2570 m->p_size_valid = 0;
2571 n->next = m->next;
2572 m->next = n;
2573 }
2574
2575 return TRUE;
2576 }
2577
2578 /* Add extra PPC sections -- Note, for now, make .sbss2 and
2579 .PPC.EMB.sbss0 a normal section, and not a bss section so
2580 that the linker doesn't crater when trying to make more than
2581 2 sections. */
2582
2583 static const struct bfd_elf_special_section ppc_elf_special_sections[] =
2584 {
2585 { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, SHF_ALLOC + SHF_EXECINSTR },
2586 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2587 { STRING_COMMA_LEN (".sbss2"), -2, SHT_PROGBITS, SHF_ALLOC },
2588 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2589 { STRING_COMMA_LEN (".sdata2"), -2, SHT_PROGBITS, SHF_ALLOC },
2590 { STRING_COMMA_LEN (".tags"), 0, SHT_ORDERED, SHF_ALLOC },
2591 { STRING_COMMA_LEN (APUINFO_SECTION_NAME), 0, SHT_NOTE, 0 },
2592 { STRING_COMMA_LEN (".PPC.EMB.sbss0"), 0, SHT_PROGBITS, SHF_ALLOC },
2593 { STRING_COMMA_LEN (".PPC.EMB.sdata0"), 0, SHT_PROGBITS, SHF_ALLOC },
2594 { NULL, 0, 0, 0, 0 }
2595 };
2596
2597 /* This is what we want for new plt/got. */
2598 static struct bfd_elf_special_section ppc_alt_plt =
2599 { STRING_COMMA_LEN (".plt"), 0, SHT_PROGBITS, SHF_ALLOC };
2600
2601 static const struct bfd_elf_special_section *
2602 ppc_elf_get_sec_type_attr (bfd *abfd, asection *sec)
2603 {
2604 const struct bfd_elf_special_section *ssect;
2605
2606 /* See if this is one of the special sections. */
2607 if (sec->name == NULL)
2608 return NULL;
2609
2610 ssect = _bfd_elf_get_special_section (sec->name, ppc_elf_special_sections,
2611 sec->use_rela_p);
2612 if (ssect != NULL)
2613 {
2614 if (ssect == ppc_elf_special_sections && (sec->flags & SEC_LOAD) != 0)
2615 ssect = &ppc_alt_plt;
2616 return ssect;
2617 }
2618
2619 return _bfd_elf_get_sec_type_attr (abfd, sec);
2620 }
2621 \f
2622 /* Very simple linked list structure for recording apuinfo values. */
2623 typedef struct apuinfo_list
2624 {
2625 struct apuinfo_list *next;
2626 unsigned long value;
2627 }
2628 apuinfo_list;
2629
2630 static apuinfo_list *head;
2631 static bfd_boolean apuinfo_set;
2632
2633 static void
2634 apuinfo_list_init (void)
2635 {
2636 head = NULL;
2637 apuinfo_set = FALSE;
2638 }
2639
2640 static void
2641 apuinfo_list_add (unsigned long value)
2642 {
2643 apuinfo_list *entry = head;
2644
2645 while (entry != NULL)
2646 {
2647 if (entry->value == value)
2648 return;
2649 entry = entry->next;
2650 }
2651
2652 entry = bfd_malloc (sizeof (* entry));
2653 if (entry == NULL)
2654 return;
2655
2656 entry->value = value;
2657 entry->next = head;
2658 head = entry;
2659 }
2660
2661 static unsigned
2662 apuinfo_list_length (void)
2663 {
2664 apuinfo_list *entry;
2665 unsigned long count;
2666
2667 for (entry = head, count = 0;
2668 entry;
2669 entry = entry->next)
2670 ++ count;
2671
2672 return count;
2673 }
2674
2675 static inline unsigned long
2676 apuinfo_list_element (unsigned long number)
2677 {
2678 apuinfo_list * entry;
2679
2680 for (entry = head;
2681 entry && number --;
2682 entry = entry->next)
2683 ;
2684
2685 return entry ? entry->value : 0;
2686 }
2687
2688 static void
2689 apuinfo_list_finish (void)
2690 {
2691 apuinfo_list *entry;
2692
2693 for (entry = head; entry;)
2694 {
2695 apuinfo_list *next = entry->next;
2696 free (entry);
2697 entry = next;
2698 }
2699
2700 head = NULL;
2701 }
2702
2703 /* Scan the input BFDs and create a linked list of
2704 the APUinfo values that will need to be emitted. */
2705
2706 static void
2707 ppc_elf_begin_write_processing (bfd *abfd, struct bfd_link_info *link_info)
2708 {
2709 bfd *ibfd;
2710 asection *asec;
2711 char *buffer = NULL;
2712 bfd_size_type largest_input_size = 0;
2713 unsigned i;
2714 unsigned long length;
2715 const char *error_message = NULL;
2716
2717 if (link_info == NULL)
2718 return;
2719
2720 apuinfo_list_init ();
2721
2722 /* Read in the input sections contents. */
2723 for (ibfd = link_info->input_bfds; ibfd; ibfd = ibfd->link.next)
2724 {
2725 unsigned long datum;
2726
2727 asec = bfd_get_section_by_name (ibfd, APUINFO_SECTION_NAME);
2728 if (asec == NULL)
2729 continue;
2730
2731 /* xgettext:c-format */
2732 error_message = _("corrupt %s section in %B");
2733 length = asec->size;
2734 if (length < 20)
2735 goto fail;
2736
2737 apuinfo_set = TRUE;
2738 if (largest_input_size < asec->size)
2739 {
2740 if (buffer)
2741 free (buffer);
2742 largest_input_size = asec->size;
2743 buffer = bfd_malloc (largest_input_size);
2744 if (!buffer)
2745 return;
2746 }
2747
2748 if (bfd_seek (ibfd, asec->filepos, SEEK_SET) != 0
2749 || (bfd_bread (buffer, length, ibfd) != length))
2750 {
2751 /* xgettext:c-format */
2752 error_message = _("unable to read in %s section from %B");
2753 goto fail;
2754 }
2755
2756 /* Verify the contents of the header. Note - we have to
2757 extract the values this way in order to allow for a
2758 host whose endian-ness is different from the target. */
2759 datum = bfd_get_32 (ibfd, buffer);
2760 if (datum != sizeof APUINFO_LABEL)
2761 goto fail;
2762
2763 datum = bfd_get_32 (ibfd, buffer + 8);
2764 if (datum != 0x2)
2765 goto fail;
2766
2767 if (strcmp (buffer + 12, APUINFO_LABEL) != 0)
2768 goto fail;
2769
2770 /* Get the number of bytes used for apuinfo entries. */
2771 datum = bfd_get_32 (ibfd, buffer + 4);
2772 if (datum + 20 != length)
2773 goto fail;
2774
2775 /* Scan the apuinfo section, building a list of apuinfo numbers. */
2776 for (i = 0; i < datum; i += 4)
2777 apuinfo_list_add (bfd_get_32 (ibfd, buffer + 20 + i));
2778 }
2779
2780 error_message = NULL;
2781
2782 if (apuinfo_set)
2783 {
2784 /* Compute the size of the output section. */
2785 unsigned num_entries = apuinfo_list_length ();
2786
2787 /* Set the output section size, if it exists. */
2788 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2789
2790 if (asec && ! bfd_set_section_size (abfd, asec, 20 + num_entries * 4))
2791 {
2792 ibfd = abfd;
2793 /* xgettext:c-format */
2794 error_message = _("warning: unable to set size of %s section in %B");
2795 }
2796 }
2797
2798 fail:
2799 if (buffer)
2800 free (buffer);
2801
2802 if (error_message)
2803 _bfd_error_handler (error_message, APUINFO_SECTION_NAME, ibfd);
2804 }
2805
2806 /* Prevent the output section from accumulating the input sections'
2807 contents. We have already stored this in our linked list structure. */
2808
2809 static bfd_boolean
2810 ppc_elf_write_section (bfd *abfd ATTRIBUTE_UNUSED,
2811 struct bfd_link_info *link_info ATTRIBUTE_UNUSED,
2812 asection *asec,
2813 bfd_byte *contents ATTRIBUTE_UNUSED)
2814 {
2815 return apuinfo_set && strcmp (asec->name, APUINFO_SECTION_NAME) == 0;
2816 }
2817
2818 /* Finally we can generate the output section. */
2819
2820 static void
2821 ppc_elf_final_write_processing (bfd *abfd, bfd_boolean linker ATTRIBUTE_UNUSED)
2822 {
2823 bfd_byte *buffer;
2824 asection *asec;
2825 unsigned i;
2826 unsigned num_entries;
2827 bfd_size_type length;
2828
2829 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2830 if (asec == NULL)
2831 return;
2832
2833 if (!apuinfo_set)
2834 return;
2835
2836 length = asec->size;
2837 if (length < 20)
2838 return;
2839
2840 buffer = bfd_malloc (length);
2841 if (buffer == NULL)
2842 {
2843 _bfd_error_handler
2844 (_("failed to allocate space for new APUinfo section."));
2845 return;
2846 }
2847
2848 /* Create the apuinfo header. */
2849 num_entries = apuinfo_list_length ();
2850 bfd_put_32 (abfd, sizeof APUINFO_LABEL, buffer);
2851 bfd_put_32 (abfd, num_entries * 4, buffer + 4);
2852 bfd_put_32 (abfd, 0x2, buffer + 8);
2853 strcpy ((char *) buffer + 12, APUINFO_LABEL);
2854
2855 length = 20;
2856 for (i = 0; i < num_entries; i++)
2857 {
2858 bfd_put_32 (abfd, apuinfo_list_element (i), buffer + length);
2859 length += 4;
2860 }
2861
2862 if (length != asec->size)
2863 _bfd_error_handler (_("failed to compute new APUinfo section."));
2864
2865 if (! bfd_set_section_contents (abfd, asec, buffer, (file_ptr) 0, length))
2866 _bfd_error_handler (_("failed to install new APUinfo section."));
2867
2868 free (buffer);
2869
2870 apuinfo_list_finish ();
2871 }
2872 \f
2873 static bfd_boolean
2874 is_nonpic_glink_stub (bfd *abfd, asection *glink, bfd_vma off)
2875 {
2876 bfd_byte buf[GLINK_ENTRY_SIZE];
2877
2878 if (!bfd_get_section_contents (abfd, glink, buf, off, GLINK_ENTRY_SIZE))
2879 return FALSE;
2880
2881 return ((bfd_get_32 (abfd, buf + 0) & 0xffff0000) == LIS_11
2882 && (bfd_get_32 (abfd, buf + 4) & 0xffff0000) == LWZ_11_11
2883 && bfd_get_32 (abfd, buf + 8) == MTCTR_11
2884 && bfd_get_32 (abfd, buf + 12) == BCTR);
2885 }
2886
2887 static bfd_boolean
2888 section_covers_vma (bfd *abfd ATTRIBUTE_UNUSED, asection *section, void *ptr)
2889 {
2890 bfd_vma vma = *(bfd_vma *) ptr;
2891 return ((section->flags & SEC_ALLOC) != 0
2892 && section->vma <= vma
2893 && vma < section->vma + section->size);
2894 }
2895
2896 static long
2897 ppc_elf_get_synthetic_symtab (bfd *abfd, long symcount, asymbol **syms,
2898 long dynsymcount, asymbol **dynsyms,
2899 asymbol **ret)
2900 {
2901 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
2902 asection *plt, *relplt, *dynamic, *glink;
2903 bfd_vma glink_vma = 0;
2904 bfd_vma resolv_vma = 0;
2905 bfd_vma stub_vma;
2906 asymbol *s;
2907 arelent *p;
2908 long count, i;
2909 size_t size;
2910 char *names;
2911 bfd_byte buf[4];
2912
2913 *ret = NULL;
2914
2915 if ((abfd->flags & (DYNAMIC | EXEC_P)) == 0)
2916 return 0;
2917
2918 if (dynsymcount <= 0)
2919 return 0;
2920
2921 relplt = bfd_get_section_by_name (abfd, ".rela.plt");
2922 if (relplt == NULL)
2923 return 0;
2924
2925 plt = bfd_get_section_by_name (abfd, ".plt");
2926 if (plt == NULL)
2927 return 0;
2928
2929 /* Call common code to handle old-style executable PLTs. */
2930 if (elf_section_flags (plt) & SHF_EXECINSTR)
2931 return _bfd_elf_get_synthetic_symtab (abfd, symcount, syms,
2932 dynsymcount, dynsyms, ret);
2933
2934 /* If this object was prelinked, the prelinker stored the address
2935 of .glink at got[1]. If it wasn't prelinked, got[1] will be zero. */
2936 dynamic = bfd_get_section_by_name (abfd, ".dynamic");
2937 if (dynamic != NULL)
2938 {
2939 bfd_byte *dynbuf, *extdyn, *extdynend;
2940 size_t extdynsize;
2941 void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *);
2942
2943 if (!bfd_malloc_and_get_section (abfd, dynamic, &dynbuf))
2944 return -1;
2945
2946 extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn;
2947 swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in;
2948
2949 extdyn = dynbuf;
2950 extdynend = extdyn + dynamic->size;
2951 for (; extdyn < extdynend; extdyn += extdynsize)
2952 {
2953 Elf_Internal_Dyn dyn;
2954 (*swap_dyn_in) (abfd, extdyn, &dyn);
2955
2956 if (dyn.d_tag == DT_NULL)
2957 break;
2958
2959 if (dyn.d_tag == DT_PPC_GOT)
2960 {
2961 unsigned int g_o_t = dyn.d_un.d_val;
2962 asection *got = bfd_get_section_by_name (abfd, ".got");
2963 if (got != NULL
2964 && bfd_get_section_contents (abfd, got, buf,
2965 g_o_t - got->vma + 4, 4))
2966 glink_vma = bfd_get_32 (abfd, buf);
2967 break;
2968 }
2969 }
2970 free (dynbuf);
2971 }
2972
2973 /* Otherwise we read the first plt entry. */
2974 if (glink_vma == 0)
2975 {
2976 if (bfd_get_section_contents (abfd, plt, buf, 0, 4))
2977 glink_vma = bfd_get_32 (abfd, buf);
2978 }
2979
2980 if (glink_vma == 0)
2981 return 0;
2982
2983 /* The .glink section usually does not survive the final
2984 link; search for the section (usually .text) where the
2985 glink stubs now reside. */
2986 glink = bfd_sections_find_if (abfd, section_covers_vma, &glink_vma);
2987 if (glink == NULL)
2988 return 0;
2989
2990 /* Determine glink PLT resolver by reading the relative branch
2991 from the first glink stub. */
2992 if (bfd_get_section_contents (abfd, glink, buf,
2993 glink_vma - glink->vma, 4))
2994 {
2995 unsigned int insn = bfd_get_32 (abfd, buf);
2996
2997 /* The first glink stub may either branch to the resolver ... */
2998 insn ^= B;
2999 if ((insn & ~0x3fffffc) == 0)
3000 resolv_vma = glink_vma + (insn ^ 0x2000000) - 0x2000000;
3001
3002 /* ... or fall through a bunch of NOPs. */
3003 else if ((insn ^ B ^ NOP) == 0)
3004 for (i = 4;
3005 bfd_get_section_contents (abfd, glink, buf,
3006 glink_vma - glink->vma + i, 4);
3007 i += 4)
3008 if (bfd_get_32 (abfd, buf) != NOP)
3009 {
3010 resolv_vma = glink_vma + i;
3011 break;
3012 }
3013 }
3014
3015 count = relplt->size / sizeof (Elf32_External_Rela);
3016 /* If the stubs are those for -shared/-pie then we might have
3017 multiple stubs for each plt entry. If that is the case then
3018 there is no way to associate stubs with their plt entries short
3019 of figuring out the GOT pointer value used in the stub. */
3020 if (!is_nonpic_glink_stub (abfd, glink,
3021 glink_vma - GLINK_ENTRY_SIZE - glink->vma))
3022 return 0;
3023
3024 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
3025 if (! (*slurp_relocs) (abfd, relplt, dynsyms, TRUE))
3026 return -1;
3027
3028 size = count * sizeof (asymbol);
3029 p = relplt->relocation;
3030 for (i = 0; i < count; i++, p++)
3031 {
3032 size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt");
3033 if (p->addend != 0)
3034 size += sizeof ("+0x") - 1 + 8;
3035 }
3036
3037 size += sizeof (asymbol) + sizeof ("__glink");
3038
3039 if (resolv_vma)
3040 size += sizeof (asymbol) + sizeof ("__glink_PLTresolve");
3041
3042 s = *ret = bfd_malloc (size);
3043 if (s == NULL)
3044 return -1;
3045
3046 stub_vma = glink_vma;
3047 names = (char *) (s + count + 1 + (resolv_vma != 0));
3048 p = relplt->relocation + count - 1;
3049 for (i = 0; i < count; i++)
3050 {
3051 size_t len;
3052
3053 *s = **p->sym_ptr_ptr;
3054 /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since
3055 we are defining a symbol, ensure one of them is set. */
3056 if ((s->flags & BSF_LOCAL) == 0)
3057 s->flags |= BSF_GLOBAL;
3058 s->flags |= BSF_SYNTHETIC;
3059 s->section = glink;
3060 stub_vma -= 16;
3061 if (strcmp ((*p->sym_ptr_ptr)->name, "__tls_get_addr_opt") == 0)
3062 stub_vma -= 32;
3063 s->value = stub_vma - glink->vma;
3064 s->name = names;
3065 s->udata.p = NULL;
3066 len = strlen ((*p->sym_ptr_ptr)->name);
3067 memcpy (names, (*p->sym_ptr_ptr)->name, len);
3068 names += len;
3069 if (p->addend != 0)
3070 {
3071 memcpy (names, "+0x", sizeof ("+0x") - 1);
3072 names += sizeof ("+0x") - 1;
3073 bfd_sprintf_vma (abfd, names, p->addend);
3074 names += strlen (names);
3075 }
3076 memcpy (names, "@plt", sizeof ("@plt"));
3077 names += sizeof ("@plt");
3078 ++s;
3079 --p;
3080 }
3081
3082 /* Add a symbol at the start of the glink branch table. */
3083 memset (s, 0, sizeof *s);
3084 s->the_bfd = abfd;
3085 s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
3086 s->section = glink;
3087 s->value = glink_vma - glink->vma;
3088 s->name = names;
3089 memcpy (names, "__glink", sizeof ("__glink"));
3090 names += sizeof ("__glink");
3091 s++;
3092 count++;
3093
3094 if (resolv_vma)
3095 {
3096 /* Add a symbol for the glink PLT resolver. */
3097 memset (s, 0, sizeof *s);
3098 s->the_bfd = abfd;
3099 s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
3100 s->section = glink;
3101 s->value = resolv_vma - glink->vma;
3102 s->name = names;
3103 memcpy (names, "__glink_PLTresolve", sizeof ("__glink_PLTresolve"));
3104 names += sizeof ("__glink_PLTresolve");
3105 s++;
3106 count++;
3107 }
3108
3109 return count;
3110 }
3111 \f
3112 /* The following functions are specific to the ELF linker, while
3113 functions above are used generally. They appear in this file more
3114 or less in the order in which they are called. eg.
3115 ppc_elf_check_relocs is called early in the link process,
3116 ppc_elf_finish_dynamic_sections is one of the last functions
3117 called. */
3118
3119 /* Track PLT entries needed for a given symbol. We might need more
3120 than one glink entry per symbol when generating a pic binary. */
3121 struct plt_entry
3122 {
3123 struct plt_entry *next;
3124
3125 /* -fPIC uses multiple GOT sections, one per file, called ".got2".
3126 This field stores the offset into .got2 used to initialise the
3127 GOT pointer reg. It will always be at least 32768. (Current
3128 gcc always uses an offset of 32768, but ld -r will pack .got2
3129 sections together resulting in larger offsets). */
3130 bfd_vma addend;
3131
3132 /* The .got2 section. */
3133 asection *sec;
3134
3135 /* PLT refcount or offset. */
3136 union
3137 {
3138 bfd_signed_vma refcount;
3139 bfd_vma offset;
3140 } plt;
3141
3142 /* .glink stub offset. */
3143 bfd_vma glink_offset;
3144 };
3145
3146 /* Of those relocs that might be copied as dynamic relocs, this
3147 function selects those that must be copied when linking a shared
3148 library or PIE, even when the symbol is local. */
3149
3150 static int
3151 must_be_dyn_reloc (struct bfd_link_info *info,
3152 enum elf_ppc_reloc_type r_type)
3153 {
3154 switch (r_type)
3155 {
3156 default:
3157 /* Only relative relocs can be resolved when the object load
3158 address isn't fixed. DTPREL32 is excluded because the
3159 dynamic linker needs to differentiate global dynamic from
3160 local dynamic __tls_index pairs when PPC_OPT_TLS is set. */
3161 return 1;
3162
3163 case R_PPC_REL24:
3164 case R_PPC_REL14:
3165 case R_PPC_REL14_BRTAKEN:
3166 case R_PPC_REL14_BRNTAKEN:
3167 case R_PPC_REL32:
3168 return 0;
3169
3170 case R_PPC_TPREL32:
3171 case R_PPC_TPREL16:
3172 case R_PPC_TPREL16_LO:
3173 case R_PPC_TPREL16_HI:
3174 case R_PPC_TPREL16_HA:
3175 /* These relocations are relative but in a shared library the
3176 linker doesn't know the thread pointer base. */
3177 return bfd_link_dll (info);
3178 }
3179 }
3180
3181 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
3182 copying dynamic variables from a shared lib into an app's dynbss
3183 section, and instead use a dynamic relocation to point into the
3184 shared lib. */
3185 #define ELIMINATE_COPY_RELOCS 1
3186
3187 /* Used to track dynamic relocations for local symbols. */
3188 struct ppc_dyn_relocs
3189 {
3190 struct ppc_dyn_relocs *next;
3191
3192 /* The input section of the reloc. */
3193 asection *sec;
3194
3195 /* Total number of relocs copied for the input section. */
3196 unsigned int count : 31;
3197
3198 /* Whether this entry is for STT_GNU_IFUNC symbols. */
3199 unsigned int ifunc : 1;
3200 };
3201
3202 /* PPC ELF linker hash entry. */
3203
3204 struct ppc_elf_link_hash_entry
3205 {
3206 struct elf_link_hash_entry elf;
3207
3208 /* If this symbol is used in the linker created sections, the processor
3209 specific backend uses this field to map the field into the offset
3210 from the beginning of the section. */
3211 elf_linker_section_pointers_t *linker_section_pointer;
3212
3213 /* Track dynamic relocs copied for this symbol. */
3214 struct elf_dyn_relocs *dyn_relocs;
3215
3216 /* Contexts in which symbol is used in the GOT (or TOC).
3217 TLS_GD .. TLS_TLS bits are or'd into the mask as the
3218 corresponding relocs are encountered during check_relocs.
3219 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
3220 indicate the corresponding GOT entry type is not needed. */
3221 #define TLS_GD 1 /* GD reloc. */
3222 #define TLS_LD 2 /* LD reloc. */
3223 #define TLS_TPREL 4 /* TPREL reloc, => IE. */
3224 #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
3225 #define TLS_TLS 16 /* Any TLS reloc. */
3226 #define TLS_TPRELGD 32 /* TPREL reloc resulting from GD->IE. */
3227 #define PLT_IFUNC 64 /* STT_GNU_IFUNC. */
3228 char tls_mask;
3229
3230 /* Nonzero if we have seen a small data relocation referring to this
3231 symbol. */
3232 unsigned char has_sda_refs : 1;
3233
3234 /* Flag use of given relocations. */
3235 unsigned char has_addr16_ha : 1;
3236 unsigned char has_addr16_lo : 1;
3237 };
3238
3239 #define ppc_elf_hash_entry(ent) ((struct ppc_elf_link_hash_entry *) (ent))
3240
3241 /* PPC ELF linker hash table. */
3242
3243 struct ppc_elf_link_hash_table
3244 {
3245 struct elf_link_hash_table elf;
3246
3247 /* Various options passed from the linker. */
3248 struct ppc_elf_params *params;
3249
3250 /* Short-cuts to get to dynamic linker sections. */
3251 asection *glink;
3252 asection *dynsbss;
3253 asection *relsbss;
3254 elf_linker_section_t sdata[2];
3255 asection *sbss;
3256 asection *glink_eh_frame;
3257
3258 /* The (unloaded but important) .rela.plt.unloaded on VxWorks. */
3259 asection *srelplt2;
3260
3261 /* Shortcut to __tls_get_addr. */
3262 struct elf_link_hash_entry *tls_get_addr;
3263
3264 /* The bfd that forced an old-style PLT. */
3265 bfd *old_bfd;
3266
3267 /* TLS local dynamic got entry handling. */
3268 union {
3269 bfd_signed_vma refcount;
3270 bfd_vma offset;
3271 } tlsld_got;
3272
3273 /* Offset of branch table to PltResolve function in glink. */
3274 bfd_vma glink_pltresolve;
3275
3276 /* Size of reserved GOT entries. */
3277 unsigned int got_header_size;
3278 /* Non-zero if allocating the header left a gap. */
3279 unsigned int got_gap;
3280
3281 /* The type of PLT we have chosen to use. */
3282 enum ppc_elf_plt_type plt_type;
3283
3284 /* True if the target system is VxWorks. */
3285 unsigned int is_vxworks:1;
3286
3287 /* Whether there exist local gnu indirect function resolvers,
3288 referenced by dynamic relocations. */
3289 unsigned int local_ifunc_resolver:1;
3290 unsigned int maybe_local_ifunc_resolver:1;
3291
3292 /* Set if tls optimization is enabled. */
3293 unsigned int do_tls_opt:1;
3294
3295 /* The size of PLT entries. */
3296 int plt_entry_size;
3297 /* The distance between adjacent PLT slots. */
3298 int plt_slot_size;
3299 /* The size of the first PLT entry. */
3300 int plt_initial_entry_size;
3301
3302 /* Small local sym cache. */
3303 struct sym_cache sym_cache;
3304 };
3305
3306 /* Rename some of the generic section flags to better document how they
3307 are used for ppc32. The flags are only valid for ppc32 elf objects. */
3308
3309 /* Nonzero if this section has TLS related relocations. */
3310 #define has_tls_reloc sec_flg0
3311
3312 /* Nonzero if this section has a call to __tls_get_addr. */
3313 #define has_tls_get_addr_call sec_flg1
3314
3315 /* Get the PPC ELF linker hash table from a link_info structure. */
3316
3317 #define ppc_elf_hash_table(p) \
3318 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
3319 == PPC32_ELF_DATA ? ((struct ppc_elf_link_hash_table *) ((p)->hash)) : NULL)
3320
3321 /* Create an entry in a PPC ELF linker hash table. */
3322
3323 static struct bfd_hash_entry *
3324 ppc_elf_link_hash_newfunc (struct bfd_hash_entry *entry,
3325 struct bfd_hash_table *table,
3326 const char *string)
3327 {
3328 /* Allocate the structure if it has not already been allocated by a
3329 subclass. */
3330 if (entry == NULL)
3331 {
3332 entry = bfd_hash_allocate (table,
3333 sizeof (struct ppc_elf_link_hash_entry));
3334 if (entry == NULL)
3335 return entry;
3336 }
3337
3338 /* Call the allocation method of the superclass. */
3339 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
3340 if (entry != NULL)
3341 {
3342 ppc_elf_hash_entry (entry)->linker_section_pointer = NULL;
3343 ppc_elf_hash_entry (entry)->dyn_relocs = NULL;
3344 ppc_elf_hash_entry (entry)->tls_mask = 0;
3345 ppc_elf_hash_entry (entry)->has_sda_refs = 0;
3346 }
3347
3348 return entry;
3349 }
3350
3351 /* Create a PPC ELF linker hash table. */
3352
3353 static struct bfd_link_hash_table *
3354 ppc_elf_link_hash_table_create (bfd *abfd)
3355 {
3356 struct ppc_elf_link_hash_table *ret;
3357 static struct ppc_elf_params default_params
3358 = { PLT_OLD, 0, 1, 0, 0, 12, 0, 0, 0 };
3359
3360 ret = bfd_zmalloc (sizeof (struct ppc_elf_link_hash_table));
3361 if (ret == NULL)
3362 return NULL;
3363
3364 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd,
3365 ppc_elf_link_hash_newfunc,
3366 sizeof (struct ppc_elf_link_hash_entry),
3367 PPC32_ELF_DATA))
3368 {
3369 free (ret);
3370 return NULL;
3371 }
3372
3373 ret->elf.init_plt_refcount.refcount = 0;
3374 ret->elf.init_plt_refcount.glist = NULL;
3375 ret->elf.init_plt_offset.offset = 0;
3376 ret->elf.init_plt_offset.glist = NULL;
3377
3378 ret->params = &default_params;
3379
3380 ret->sdata[0].name = ".sdata";
3381 ret->sdata[0].sym_name = "_SDA_BASE_";
3382 ret->sdata[0].bss_name = ".sbss";
3383
3384 ret->sdata[1].name = ".sdata2";
3385 ret->sdata[1].sym_name = "_SDA2_BASE_";
3386 ret->sdata[1].bss_name = ".sbss2";
3387
3388 ret->plt_entry_size = 12;
3389 ret->plt_slot_size = 8;
3390 ret->plt_initial_entry_size = 72;
3391
3392 return &ret->elf.root;
3393 }
3394
3395 /* Hook linker params into hash table. */
3396
3397 void
3398 ppc_elf_link_params (struct bfd_link_info *info, struct ppc_elf_params *params)
3399 {
3400 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
3401
3402 if (htab)
3403 htab->params = params;
3404 params->pagesize_p2 = bfd_log2 (params->pagesize);
3405 }
3406
3407 /* Create .got and the related sections. */
3408
3409 static bfd_boolean
3410 ppc_elf_create_got (bfd *abfd, struct bfd_link_info *info)
3411 {
3412 struct ppc_elf_link_hash_table *htab;
3413
3414 if (!_bfd_elf_create_got_section (abfd, info))
3415 return FALSE;
3416
3417 htab = ppc_elf_hash_table (info);
3418 if (!htab->is_vxworks)
3419 {
3420 /* The powerpc .got has a blrl instruction in it. Mark it
3421 executable. */
3422 flagword flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS
3423 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3424 if (!bfd_set_section_flags (abfd, htab->elf.sgot, flags))
3425 return FALSE;
3426 }
3427
3428 return TRUE;
3429 }
3430
3431 /* Create a special linker section, used for R_PPC_EMB_SDAI16 and
3432 R_PPC_EMB_SDA2I16 pointers. These sections become part of .sdata
3433 and .sdata2. Create _SDA_BASE_ and _SDA2_BASE too. */
3434
3435 static bfd_boolean
3436 ppc_elf_create_linker_section (bfd *abfd,
3437 struct bfd_link_info *info,
3438 flagword flags,
3439 elf_linker_section_t *lsect)
3440 {
3441 asection *s;
3442
3443 flags |= (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
3444 | SEC_LINKER_CREATED);
3445
3446 s = bfd_make_section_anyway_with_flags (abfd, lsect->name, flags);
3447 if (s == NULL)
3448 return FALSE;
3449 lsect->section = s;
3450
3451 /* Define the sym on the first section of this name. */
3452 s = bfd_get_section_by_name (abfd, lsect->name);
3453
3454 lsect->sym = _bfd_elf_define_linkage_sym (abfd, info, s, lsect->sym_name);
3455 if (lsect->sym == NULL)
3456 return FALSE;
3457 lsect->sym->root.u.def.value = 0x8000;
3458 return TRUE;
3459 }
3460
3461 static bfd_boolean
3462 ppc_elf_create_glink (bfd *abfd, struct bfd_link_info *info)
3463 {
3464 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
3465 asection *s;
3466 flagword flags;
3467
3468 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY | SEC_HAS_CONTENTS
3469 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3470 s = bfd_make_section_anyway_with_flags (abfd, ".glink", flags);
3471 htab->glink = s;
3472 if (s == NULL
3473 || !bfd_set_section_alignment (abfd, s,
3474 htab->params->ppc476_workaround ? 6 : 4))
3475 return FALSE;
3476
3477 if (!info->no_ld_generated_unwind_info)
3478 {
3479 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
3480 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3481 s = bfd_make_section_anyway_with_flags (abfd, ".eh_frame", flags);
3482 htab->glink_eh_frame = s;
3483 if (s == NULL
3484 || !bfd_set_section_alignment (abfd, s, 2))
3485 return FALSE;
3486 }
3487
3488 flags = SEC_ALLOC | SEC_LINKER_CREATED;
3489 s = bfd_make_section_anyway_with_flags (abfd, ".iplt", flags);
3490 htab->elf.iplt = s;
3491 if (s == NULL
3492 || !bfd_set_section_alignment (abfd, s, 4))
3493 return FALSE;
3494
3495 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
3496 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3497 s = bfd_make_section_anyway_with_flags (abfd, ".rela.iplt", flags);
3498 htab->elf.irelplt = s;
3499 if (s == NULL
3500 || ! bfd_set_section_alignment (abfd, s, 2))
3501 return FALSE;
3502
3503 if (!ppc_elf_create_linker_section (abfd, info, 0,
3504 &htab->sdata[0]))
3505 return FALSE;
3506
3507 if (!ppc_elf_create_linker_section (abfd, info, SEC_READONLY,
3508 &htab->sdata[1]))
3509 return FALSE;
3510
3511 return TRUE;
3512 }
3513
3514 /* We have to create .dynsbss and .rela.sbss here so that they get mapped
3515 to output sections (just like _bfd_elf_create_dynamic_sections has
3516 to create .dynbss and .rela.bss). */
3517
3518 static bfd_boolean
3519 ppc_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
3520 {
3521 struct ppc_elf_link_hash_table *htab;
3522 asection *s;
3523 flagword flags;
3524
3525 htab = ppc_elf_hash_table (info);
3526
3527 if (htab->elf.sgot == NULL
3528 && !ppc_elf_create_got (abfd, info))
3529 return FALSE;
3530
3531 if (!_bfd_elf_create_dynamic_sections (abfd, info))
3532 return FALSE;
3533
3534 if (htab->glink == NULL
3535 && !ppc_elf_create_glink (abfd, info))
3536 return FALSE;
3537
3538 s = bfd_make_section_anyway_with_flags (abfd, ".dynsbss",
3539 SEC_ALLOC | SEC_LINKER_CREATED);
3540 htab->dynsbss = s;
3541 if (s == NULL)
3542 return FALSE;
3543
3544 if (! bfd_link_pic (info))
3545 {
3546 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
3547 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3548 s = bfd_make_section_anyway_with_flags (abfd, ".rela.sbss", flags);
3549 htab->relsbss = s;
3550 if (s == NULL
3551 || ! bfd_set_section_alignment (abfd, s, 2))
3552 return FALSE;
3553 }
3554
3555 if (htab->is_vxworks
3556 && !elf_vxworks_create_dynamic_sections (abfd, info, &htab->srelplt2))
3557 return FALSE;
3558
3559 s = htab->elf.splt;
3560 flags = SEC_ALLOC | SEC_CODE | SEC_LINKER_CREATED;
3561 if (htab->plt_type == PLT_VXWORKS)
3562 /* The VxWorks PLT is a loaded section with contents. */
3563 flags |= SEC_HAS_CONTENTS | SEC_LOAD | SEC_READONLY;
3564 return bfd_set_section_flags (abfd, s, flags);
3565 }
3566
3567 /* Copy the extra info we tack onto an elf_link_hash_entry. */
3568
3569 static void
3570 ppc_elf_copy_indirect_symbol (struct bfd_link_info *info,
3571 struct elf_link_hash_entry *dir,
3572 struct elf_link_hash_entry *ind)
3573 {
3574 struct ppc_elf_link_hash_entry *edir, *eind;
3575
3576 edir = (struct ppc_elf_link_hash_entry *) dir;
3577 eind = (struct ppc_elf_link_hash_entry *) ind;
3578
3579 edir->tls_mask |= eind->tls_mask;
3580 edir->has_sda_refs |= eind->has_sda_refs;
3581
3582 /* If called to transfer flags for a weakdef during processing
3583 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
3584 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
3585 if (!(ELIMINATE_COPY_RELOCS
3586 && eind->elf.root.type != bfd_link_hash_indirect
3587 && edir->elf.dynamic_adjusted))
3588 edir->elf.non_got_ref |= eind->elf.non_got_ref;
3589
3590 if (edir->elf.versioned != versioned_hidden)
3591 edir->elf.ref_dynamic |= eind->elf.ref_dynamic;
3592 edir->elf.ref_regular |= eind->elf.ref_regular;
3593 edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak;
3594 edir->elf.needs_plt |= eind->elf.needs_plt;
3595 edir->elf.pointer_equality_needed |= eind->elf.pointer_equality_needed;
3596
3597 if (eind->dyn_relocs != NULL)
3598 {
3599 if (edir->dyn_relocs != NULL)
3600 {
3601 struct elf_dyn_relocs **pp;
3602 struct elf_dyn_relocs *p;
3603
3604 /* Add reloc counts against the indirect sym to the direct sym
3605 list. Merge any entries against the same section. */
3606 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
3607 {
3608 struct elf_dyn_relocs *q;
3609
3610 for (q = edir->dyn_relocs; q != NULL; q = q->next)
3611 if (q->sec == p->sec)
3612 {
3613 q->pc_count += p->pc_count;
3614 q->count += p->count;
3615 *pp = p->next;
3616 break;
3617 }
3618 if (q == NULL)
3619 pp = &p->next;
3620 }
3621 *pp = edir->dyn_relocs;
3622 }
3623
3624 edir->dyn_relocs = eind->dyn_relocs;
3625 eind->dyn_relocs = NULL;
3626 }
3627
3628 /* If we were called to copy over info for a weak sym, that's all.
3629 You might think dyn_relocs need not be copied over; After all,
3630 both syms will be dynamic or both non-dynamic so we're just
3631 moving reloc accounting around. However, ELIMINATE_COPY_RELOCS
3632 code in ppc_elf_adjust_dynamic_symbol needs to check for
3633 dyn_relocs in read-only sections, and it does so on what is the
3634 DIR sym here. */
3635 if (eind->elf.root.type != bfd_link_hash_indirect)
3636 return;
3637
3638 /* Copy over the GOT refcount entries that we may have already seen to
3639 the symbol which just became indirect. */
3640 edir->elf.got.refcount += eind->elf.got.refcount;
3641 eind->elf.got.refcount = 0;
3642
3643 /* And plt entries. */
3644 if (eind->elf.plt.plist != NULL)
3645 {
3646 if (edir->elf.plt.plist != NULL)
3647 {
3648 struct plt_entry **entp;
3649 struct plt_entry *ent;
3650
3651 for (entp = &eind->elf.plt.plist; (ent = *entp) != NULL; )
3652 {
3653 struct plt_entry *dent;
3654
3655 for (dent = edir->elf.plt.plist; dent != NULL; dent = dent->next)
3656 if (dent->sec == ent->sec && dent->addend == ent->addend)
3657 {
3658 dent->plt.refcount += ent->plt.refcount;
3659 *entp = ent->next;
3660 break;
3661 }
3662 if (dent == NULL)
3663 entp = &ent->next;
3664 }
3665 *entp = edir->elf.plt.plist;
3666 }
3667
3668 edir->elf.plt.plist = eind->elf.plt.plist;
3669 eind->elf.plt.plist = NULL;
3670 }
3671
3672 if (eind->elf.dynindx != -1)
3673 {
3674 if (edir->elf.dynindx != -1)
3675 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
3676 edir->elf.dynstr_index);
3677 edir->elf.dynindx = eind->elf.dynindx;
3678 edir->elf.dynstr_index = eind->elf.dynstr_index;
3679 eind->elf.dynindx = -1;
3680 eind->elf.dynstr_index = 0;
3681 }
3682 }
3683
3684 /* Hook called by the linker routine which adds symbols from an object
3685 file. We use it to put .comm items in .sbss, and not .bss. */
3686
3687 static bfd_boolean
3688 ppc_elf_add_symbol_hook (bfd *abfd,
3689 struct bfd_link_info *info,
3690 Elf_Internal_Sym *sym,
3691 const char **namep ATTRIBUTE_UNUSED,
3692 flagword *flagsp ATTRIBUTE_UNUSED,
3693 asection **secp,
3694 bfd_vma *valp)
3695 {
3696 if (sym->st_shndx == SHN_COMMON
3697 && !bfd_link_relocatable (info)
3698 && is_ppc_elf (info->output_bfd)
3699 && sym->st_size <= elf_gp_size (abfd))
3700 {
3701 /* Common symbols less than or equal to -G nn bytes are automatically
3702 put into .sbss. */
3703 struct ppc_elf_link_hash_table *htab;
3704
3705 htab = ppc_elf_hash_table (info);
3706 if (htab->sbss == NULL)
3707 {
3708 flagword flags = SEC_IS_COMMON | SEC_LINKER_CREATED;
3709
3710 if (!htab->elf.dynobj)
3711 htab->elf.dynobj = abfd;
3712
3713 htab->sbss = bfd_make_section_anyway_with_flags (htab->elf.dynobj,
3714 ".sbss",
3715 flags);
3716 if (htab->sbss == NULL)
3717 return FALSE;
3718 }
3719
3720 *secp = htab->sbss;
3721 *valp = sym->st_size;
3722 }
3723
3724 if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC
3725 && (abfd->flags & DYNAMIC) == 0
3726 && bfd_get_flavour (info->output_bfd) == bfd_target_elf_flavour)
3727 elf_tdata (info->output_bfd)->has_gnu_symbols |= elf_gnu_symbol_ifunc;
3728
3729 return TRUE;
3730 }
3731 \f
3732 /* Find a linker generated pointer with a given addend and type. */
3733
3734 static elf_linker_section_pointers_t *
3735 elf_find_pointer_linker_section
3736 (elf_linker_section_pointers_t *linker_pointers,
3737 bfd_vma addend,
3738 elf_linker_section_t *lsect)
3739 {
3740 for ( ; linker_pointers != NULL; linker_pointers = linker_pointers->next)
3741 if (lsect == linker_pointers->lsect && addend == linker_pointers->addend)
3742 return linker_pointers;
3743
3744 return NULL;
3745 }
3746
3747 /* Allocate a pointer to live in a linker created section. */
3748
3749 static bfd_boolean
3750 elf_allocate_pointer_linker_section (bfd *abfd,
3751 elf_linker_section_t *lsect,
3752 struct elf_link_hash_entry *h,
3753 const Elf_Internal_Rela *rel)
3754 {
3755 elf_linker_section_pointers_t **ptr_linker_section_ptr = NULL;
3756 elf_linker_section_pointers_t *linker_section_ptr;
3757 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
3758 bfd_size_type amt;
3759
3760 BFD_ASSERT (lsect != NULL);
3761
3762 /* Is this a global symbol? */
3763 if (h != NULL)
3764 {
3765 struct ppc_elf_link_hash_entry *eh;
3766
3767 /* Has this symbol already been allocated? If so, our work is done. */
3768 eh = (struct ppc_elf_link_hash_entry *) h;
3769 if (elf_find_pointer_linker_section (eh->linker_section_pointer,
3770 rel->r_addend,
3771 lsect))
3772 return TRUE;
3773
3774 ptr_linker_section_ptr = &eh->linker_section_pointer;
3775 }
3776 else
3777 {
3778 BFD_ASSERT (is_ppc_elf (abfd));
3779
3780 /* Allocation of a pointer to a local symbol. */
3781 elf_linker_section_pointers_t **ptr = elf_local_ptr_offsets (abfd);
3782
3783 /* Allocate a table to hold the local symbols if first time. */
3784 if (!ptr)
3785 {
3786 unsigned int num_symbols = elf_symtab_hdr (abfd).sh_info;
3787
3788 amt = num_symbols;
3789 amt *= sizeof (elf_linker_section_pointers_t *);
3790 ptr = bfd_zalloc (abfd, amt);
3791
3792 if (!ptr)
3793 return FALSE;
3794
3795 elf_local_ptr_offsets (abfd) = ptr;
3796 }
3797
3798 /* Has this symbol already been allocated? If so, our work is done. */
3799 if (elf_find_pointer_linker_section (ptr[r_symndx],
3800 rel->r_addend,
3801 lsect))
3802 return TRUE;
3803
3804 ptr_linker_section_ptr = &ptr[r_symndx];
3805 }
3806
3807 /* Allocate space for a pointer in the linker section, and allocate
3808 a new pointer record from internal memory. */
3809 BFD_ASSERT (ptr_linker_section_ptr != NULL);
3810 amt = sizeof (elf_linker_section_pointers_t);
3811 linker_section_ptr = bfd_alloc (abfd, amt);
3812
3813 if (!linker_section_ptr)
3814 return FALSE;
3815
3816 linker_section_ptr->next = *ptr_linker_section_ptr;
3817 linker_section_ptr->addend = rel->r_addend;
3818 linker_section_ptr->lsect = lsect;
3819 *ptr_linker_section_ptr = linker_section_ptr;
3820
3821 if (!bfd_set_section_alignment (lsect->section->owner, lsect->section, 2))
3822 return FALSE;
3823 linker_section_ptr->offset = lsect->section->size;
3824 lsect->section->size += 4;
3825
3826 #ifdef DEBUG
3827 fprintf (stderr,
3828 "Create pointer in linker section %s, offset = %ld, section size = %ld\n",
3829 lsect->name, (long) linker_section_ptr->offset,
3830 (long) lsect->section->size);
3831 #endif
3832
3833 return TRUE;
3834 }
3835
3836 static struct plt_entry **
3837 update_local_sym_info (bfd *abfd,
3838 Elf_Internal_Shdr *symtab_hdr,
3839 unsigned long r_symndx,
3840 int tls_type)
3841 {
3842 bfd_signed_vma *local_got_refcounts = elf_local_got_refcounts (abfd);
3843 struct plt_entry **local_plt;
3844 char *local_got_tls_masks;
3845
3846 if (local_got_refcounts == NULL)
3847 {
3848 bfd_size_type size = symtab_hdr->sh_info;
3849
3850 size *= (sizeof (*local_got_refcounts)
3851 + sizeof (*local_plt)
3852 + sizeof (*local_got_tls_masks));
3853 local_got_refcounts = bfd_zalloc (abfd, size);
3854 if (local_got_refcounts == NULL)
3855 return NULL;
3856 elf_local_got_refcounts (abfd) = local_got_refcounts;
3857 }
3858
3859 local_plt = (struct plt_entry **) (local_got_refcounts + symtab_hdr->sh_info);
3860 local_got_tls_masks = (char *) (local_plt + symtab_hdr->sh_info);
3861 local_got_tls_masks[r_symndx] |= tls_type;
3862 if (tls_type != PLT_IFUNC)
3863 local_got_refcounts[r_symndx] += 1;
3864 return local_plt + r_symndx;
3865 }
3866
3867 static bfd_boolean
3868 update_plt_info (bfd *abfd, struct plt_entry **plist,
3869 asection *sec, bfd_vma addend)
3870 {
3871 struct plt_entry *ent;
3872
3873 if (addend < 32768)
3874 sec = NULL;
3875 for (ent = *plist; ent != NULL; ent = ent->next)
3876 if (ent->sec == sec && ent->addend == addend)
3877 break;
3878 if (ent == NULL)
3879 {
3880 bfd_size_type amt = sizeof (*ent);
3881 ent = bfd_alloc (abfd, amt);
3882 if (ent == NULL)
3883 return FALSE;
3884 ent->next = *plist;
3885 ent->sec = sec;
3886 ent->addend = addend;
3887 ent->plt.refcount = 0;
3888 *plist = ent;
3889 }
3890 ent->plt.refcount += 1;
3891 return TRUE;
3892 }
3893
3894 static struct plt_entry *
3895 find_plt_ent (struct plt_entry **plist, asection *sec, bfd_vma addend)
3896 {
3897 struct plt_entry *ent;
3898
3899 if (addend < 32768)
3900 sec = NULL;
3901 for (ent = *plist; ent != NULL; ent = ent->next)
3902 if (ent->sec == sec && ent->addend == addend)
3903 break;
3904 return ent;
3905 }
3906
3907 static bfd_boolean
3908 is_branch_reloc (enum elf_ppc_reloc_type r_type)
3909 {
3910 return (r_type == R_PPC_PLTREL24
3911 || r_type == R_PPC_LOCAL24PC
3912 || r_type == R_PPC_REL24
3913 || r_type == R_PPC_REL14
3914 || r_type == R_PPC_REL14_BRTAKEN
3915 || r_type == R_PPC_REL14_BRNTAKEN
3916 || r_type == R_PPC_ADDR24
3917 || r_type == R_PPC_ADDR14
3918 || r_type == R_PPC_ADDR14_BRTAKEN
3919 || r_type == R_PPC_ADDR14_BRNTAKEN
3920 || r_type == R_PPC_VLE_REL24);
3921 }
3922
3923 static void
3924 bad_shared_reloc (bfd *abfd, enum elf_ppc_reloc_type r_type)
3925 {
3926 _bfd_error_handler
3927 /* xgettext:c-format */
3928 (_("%B: relocation %s cannot be used when making a shared object"),
3929 abfd,
3930 ppc_elf_howto_table[r_type]->name);
3931 bfd_set_error (bfd_error_bad_value);
3932 }
3933
3934 /* Look through the relocs for a section during the first phase, and
3935 allocate space in the global offset table or procedure linkage
3936 table. */
3937
3938 static bfd_boolean
3939 ppc_elf_check_relocs (bfd *abfd,
3940 struct bfd_link_info *info,
3941 asection *sec,
3942 const Elf_Internal_Rela *relocs)
3943 {
3944 struct ppc_elf_link_hash_table *htab;
3945 Elf_Internal_Shdr *symtab_hdr;
3946 struct elf_link_hash_entry **sym_hashes;
3947 const Elf_Internal_Rela *rel;
3948 const Elf_Internal_Rela *rel_end;
3949 asection *got2, *sreloc;
3950 struct elf_link_hash_entry *tga;
3951
3952 if (bfd_link_relocatable (info))
3953 return TRUE;
3954
3955 /* Don't do anything special with non-loaded, non-alloced sections.
3956 In particular, any relocs in such sections should not affect GOT
3957 and PLT reference counting (ie. we don't allow them to create GOT
3958 or PLT entries), there's no possibility or desire to optimize TLS
3959 relocs, and there's not much point in propagating relocs to shared
3960 libs that the dynamic linker won't relocate. */
3961 if ((sec->flags & SEC_ALLOC) == 0)
3962 return TRUE;
3963
3964 #ifdef DEBUG
3965 _bfd_error_handler ("ppc_elf_check_relocs called for section %A in %B",
3966 sec, abfd);
3967 #endif
3968
3969 BFD_ASSERT (is_ppc_elf (abfd));
3970
3971 /* Initialize howto table if not already done. */
3972 if (!ppc_elf_howto_table[R_PPC_ADDR32])
3973 ppc_elf_howto_init ();
3974
3975 htab = ppc_elf_hash_table (info);
3976 if (htab->glink == NULL)
3977 {
3978 if (htab->elf.dynobj == NULL)
3979 htab->elf.dynobj = abfd;
3980 if (!ppc_elf_create_glink (htab->elf.dynobj, info))
3981 return FALSE;
3982 }
3983 tga = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
3984 FALSE, FALSE, TRUE);
3985 symtab_hdr = &elf_symtab_hdr (abfd);
3986 sym_hashes = elf_sym_hashes (abfd);
3987 got2 = bfd_get_section_by_name (abfd, ".got2");
3988 sreloc = NULL;
3989
3990 rel_end = relocs + sec->reloc_count;
3991 for (rel = relocs; rel < rel_end; rel++)
3992 {
3993 unsigned long r_symndx;
3994 enum elf_ppc_reloc_type r_type;
3995 struct elf_link_hash_entry *h;
3996 int tls_type;
3997 struct plt_entry **ifunc;
3998
3999 r_symndx = ELF32_R_SYM (rel->r_info);
4000 if (r_symndx < symtab_hdr->sh_info)
4001 h = NULL;
4002 else
4003 {
4004 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4005 while (h->root.type == bfd_link_hash_indirect
4006 || h->root.type == bfd_link_hash_warning)
4007 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4008
4009 /* PR15323, ref flags aren't set for references in the same
4010 object. */
4011 h->root.non_ir_ref_regular = 1;
4012 }
4013
4014 /* If a relocation refers to _GLOBAL_OFFSET_TABLE_, create the .got.
4015 This shows up in particular in an R_PPC_ADDR32 in the eabi
4016 startup code. */
4017 if (h != NULL
4018 && htab->elf.sgot == NULL
4019 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
4020 {
4021 if (htab->elf.dynobj == NULL)
4022 htab->elf.dynobj = abfd;
4023 if (!ppc_elf_create_got (htab->elf.dynobj, info))
4024 return FALSE;
4025 BFD_ASSERT (h == htab->elf.hgot);
4026 }
4027
4028 tls_type = 0;
4029 r_type = ELF32_R_TYPE (rel->r_info);
4030 ifunc = NULL;
4031 if (h == NULL && !htab->is_vxworks)
4032 {
4033 Elf_Internal_Sym *isym = bfd_sym_from_r_symndx (&htab->sym_cache,
4034 abfd, r_symndx);
4035 if (isym == NULL)
4036 return FALSE;
4037
4038 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
4039 {
4040 /* Set PLT_IFUNC flag for this sym, no GOT entry yet. */
4041 ifunc = update_local_sym_info (abfd, symtab_hdr, r_symndx,
4042 PLT_IFUNC);
4043 if (ifunc == NULL)
4044 return FALSE;
4045
4046 /* STT_GNU_IFUNC symbols must have a PLT entry;
4047 In a non-pie executable even when there are
4048 no plt calls. */
4049 if (!bfd_link_pic (info)
4050 || is_branch_reloc (r_type))
4051 {
4052 bfd_vma addend = 0;
4053 if (r_type == R_PPC_PLTREL24)
4054 {
4055 ppc_elf_tdata (abfd)->makes_plt_call = 1;
4056 if (bfd_link_pic (info))
4057 addend = rel->r_addend;
4058 }
4059 if (!update_plt_info (abfd, ifunc, got2, addend))
4060 return FALSE;
4061 }
4062 }
4063 }
4064
4065 if (!htab->is_vxworks
4066 && is_branch_reloc (r_type)
4067 && h != NULL
4068 && h == tga)
4069 {
4070 if (rel != relocs
4071 && (ELF32_R_TYPE (rel[-1].r_info) == R_PPC_TLSGD
4072 || ELF32_R_TYPE (rel[-1].r_info) == R_PPC_TLSLD))
4073 /* We have a new-style __tls_get_addr call with a marker
4074 reloc. */
4075 ;
4076 else
4077 /* Mark this section as having an old-style call. */
4078 sec->has_tls_get_addr_call = 1;
4079 }
4080
4081 switch (r_type)
4082 {
4083 case R_PPC_TLSGD:
4084 case R_PPC_TLSLD:
4085 /* These special tls relocs tie a call to __tls_get_addr with
4086 its parameter symbol. */
4087 break;
4088
4089 case R_PPC_GOT_TLSLD16:
4090 case R_PPC_GOT_TLSLD16_LO:
4091 case R_PPC_GOT_TLSLD16_HI:
4092 case R_PPC_GOT_TLSLD16_HA:
4093 tls_type = TLS_TLS | TLS_LD;
4094 goto dogottls;
4095
4096 case R_PPC_GOT_TLSGD16:
4097 case R_PPC_GOT_TLSGD16_LO:
4098 case R_PPC_GOT_TLSGD16_HI:
4099 case R_PPC_GOT_TLSGD16_HA:
4100 tls_type = TLS_TLS | TLS_GD;
4101 goto dogottls;
4102
4103 case R_PPC_GOT_TPREL16:
4104 case R_PPC_GOT_TPREL16_LO:
4105 case R_PPC_GOT_TPREL16_HI:
4106 case R_PPC_GOT_TPREL16_HA:
4107 if (bfd_link_dll (info))
4108 info->flags |= DF_STATIC_TLS;
4109 tls_type = TLS_TLS | TLS_TPREL;
4110 goto dogottls;
4111
4112 case R_PPC_GOT_DTPREL16:
4113 case R_PPC_GOT_DTPREL16_LO:
4114 case R_PPC_GOT_DTPREL16_HI:
4115 case R_PPC_GOT_DTPREL16_HA:
4116 tls_type = TLS_TLS | TLS_DTPREL;
4117 dogottls:
4118 sec->has_tls_reloc = 1;
4119 /* Fall through. */
4120
4121 /* GOT16 relocations */
4122 case R_PPC_GOT16:
4123 case R_PPC_GOT16_LO:
4124 case R_PPC_GOT16_HI:
4125 case R_PPC_GOT16_HA:
4126 /* This symbol requires a global offset table entry. */
4127 if (htab->elf.sgot == NULL)
4128 {
4129 if (htab->elf.dynobj == NULL)
4130 htab->elf.dynobj = abfd;
4131 if (!ppc_elf_create_got (htab->elf.dynobj, info))
4132 return FALSE;
4133 }
4134 if (h != NULL)
4135 {
4136 h->got.refcount += 1;
4137 ppc_elf_hash_entry (h)->tls_mask |= tls_type;
4138 }
4139 else
4140 /* This is a global offset table entry for a local symbol. */
4141 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, tls_type))
4142 return FALSE;
4143
4144 /* We may also need a plt entry if the symbol turns out to be
4145 an ifunc. */
4146 if (h != NULL && !bfd_link_pic (info))
4147 {
4148 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
4149 return FALSE;
4150 }
4151 break;
4152
4153 /* Indirect .sdata relocation. */
4154 case R_PPC_EMB_SDAI16:
4155 if (bfd_link_pic (info))
4156 {
4157 bad_shared_reloc (abfd, r_type);
4158 return FALSE;
4159 }
4160 htab->sdata[0].sym->ref_regular = 1;
4161 if (!elf_allocate_pointer_linker_section (abfd, &htab->sdata[0],
4162 h, rel))
4163 return FALSE;
4164 if (h != NULL)
4165 {
4166 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4167 h->non_got_ref = TRUE;
4168 }
4169 break;
4170
4171 /* Indirect .sdata2 relocation. */
4172 case R_PPC_EMB_SDA2I16:
4173 if (bfd_link_pic (info))
4174 {
4175 bad_shared_reloc (abfd, r_type);
4176 return FALSE;
4177 }
4178 htab->sdata[1].sym->ref_regular = 1;
4179 if (!elf_allocate_pointer_linker_section (abfd, &htab->sdata[1],
4180 h, rel))
4181 return FALSE;
4182 if (h != NULL)
4183 {
4184 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4185 h->non_got_ref = TRUE;
4186 }
4187 break;
4188
4189 case R_PPC_SDAREL16:
4190 htab->sdata[0].sym->ref_regular = 1;
4191 /* Fall through. */
4192
4193 case R_PPC_VLE_SDAREL_LO16A:
4194 case R_PPC_VLE_SDAREL_LO16D:
4195 case R_PPC_VLE_SDAREL_HI16A:
4196 case R_PPC_VLE_SDAREL_HI16D:
4197 case R_PPC_VLE_SDAREL_HA16A:
4198 case R_PPC_VLE_SDAREL_HA16D:
4199 if (h != NULL)
4200 {
4201 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4202 h->non_got_ref = TRUE;
4203 }
4204 break;
4205
4206 case R_PPC_VLE_REL8:
4207 case R_PPC_VLE_REL15:
4208 case R_PPC_VLE_REL24:
4209 case R_PPC_VLE_LO16A:
4210 case R_PPC_VLE_LO16D:
4211 case R_PPC_VLE_HI16A:
4212 case R_PPC_VLE_HI16D:
4213 case R_PPC_VLE_HA16A:
4214 case R_PPC_VLE_HA16D:
4215 case R_PPC_VLE_ADDR20:
4216 break;
4217
4218 case R_PPC_EMB_SDA2REL:
4219 if (bfd_link_pic (info))
4220 {
4221 bad_shared_reloc (abfd, r_type);
4222 return FALSE;
4223 }
4224 htab->sdata[1].sym->ref_regular = 1;
4225 if (h != NULL)
4226 {
4227 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4228 h->non_got_ref = TRUE;
4229 }
4230 break;
4231
4232 case R_PPC_VLE_SDA21_LO:
4233 case R_PPC_VLE_SDA21:
4234 case R_PPC_EMB_SDA21:
4235 case R_PPC_EMB_RELSDA:
4236 if (bfd_link_pic (info))
4237 {
4238 bad_shared_reloc (abfd, r_type);
4239 return FALSE;
4240 }
4241 if (h != NULL)
4242 {
4243 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4244 h->non_got_ref = TRUE;
4245 }
4246 break;
4247
4248 case R_PPC_EMB_NADDR32:
4249 case R_PPC_EMB_NADDR16:
4250 case R_PPC_EMB_NADDR16_LO:
4251 case R_PPC_EMB_NADDR16_HI:
4252 case R_PPC_EMB_NADDR16_HA:
4253 if (bfd_link_pic (info))
4254 {
4255 bad_shared_reloc (abfd, r_type);
4256 return FALSE;
4257 }
4258 if (h != NULL)
4259 h->non_got_ref = TRUE;
4260 break;
4261
4262 case R_PPC_PLTREL24:
4263 if (h == NULL)
4264 break;
4265 /* Fall through */
4266 case R_PPC_PLT32:
4267 case R_PPC_PLTREL32:
4268 case R_PPC_PLT16_LO:
4269 case R_PPC_PLT16_HI:
4270 case R_PPC_PLT16_HA:
4271 #ifdef DEBUG
4272 fprintf (stderr, "Reloc requires a PLT entry\n");
4273 #endif
4274 /* This symbol requires a procedure linkage table entry. */
4275 if (h == NULL)
4276 {
4277 if (ifunc == NULL)
4278 {
4279 /* It does not make sense to have a procedure linkage
4280 table entry for a non-ifunc local symbol. */
4281 info->callbacks->einfo
4282 /* xgettext:c-format */
4283 (_("%H: %s reloc against local symbol\n"),
4284 abfd, sec, rel->r_offset,
4285 ppc_elf_howto_table[r_type]->name);
4286 bfd_set_error (bfd_error_bad_value);
4287 return FALSE;
4288 }
4289 }
4290 else
4291 {
4292 bfd_vma addend = 0;
4293
4294 if (r_type == R_PPC_PLTREL24)
4295 {
4296 ppc_elf_tdata (abfd)->makes_plt_call = 1;
4297 if (bfd_link_pic (info))
4298 addend = rel->r_addend;
4299 }
4300 h->needs_plt = 1;
4301 if (!update_plt_info (abfd, &h->plt.plist, got2, addend))
4302 return FALSE;
4303 }
4304 break;
4305
4306 /* The following relocations don't need to propagate the
4307 relocation if linking a shared object since they are
4308 section relative. */
4309 case R_PPC_SECTOFF:
4310 case R_PPC_SECTOFF_LO:
4311 case R_PPC_SECTOFF_HI:
4312 case R_PPC_SECTOFF_HA:
4313 case R_PPC_DTPREL16:
4314 case R_PPC_DTPREL16_LO:
4315 case R_PPC_DTPREL16_HI:
4316 case R_PPC_DTPREL16_HA:
4317 case R_PPC_TOC16:
4318 break;
4319
4320 case R_PPC_REL16:
4321 case R_PPC_REL16_LO:
4322 case R_PPC_REL16_HI:
4323 case R_PPC_REL16_HA:
4324 case R_PPC_REL16DX_HA:
4325 ppc_elf_tdata (abfd)->has_rel16 = 1;
4326 break;
4327
4328 /* These are just markers. */
4329 case R_PPC_TLS:
4330 case R_PPC_EMB_MRKREF:
4331 case R_PPC_NONE:
4332 case R_PPC_max:
4333 case R_PPC_RELAX:
4334 case R_PPC_RELAX_PLT:
4335 case R_PPC_RELAX_PLTREL24:
4336 case R_PPC_16DX_HA:
4337 break;
4338
4339 /* These should only appear in dynamic objects. */
4340 case R_PPC_COPY:
4341 case R_PPC_GLOB_DAT:
4342 case R_PPC_JMP_SLOT:
4343 case R_PPC_RELATIVE:
4344 case R_PPC_IRELATIVE:
4345 break;
4346
4347 /* These aren't handled yet. We'll report an error later. */
4348 case R_PPC_ADDR30:
4349 case R_PPC_EMB_RELSEC16:
4350 case R_PPC_EMB_RELST_LO:
4351 case R_PPC_EMB_RELST_HI:
4352 case R_PPC_EMB_RELST_HA:
4353 case R_PPC_EMB_BIT_FLD:
4354 break;
4355
4356 /* This refers only to functions defined in the shared library. */
4357 case R_PPC_LOCAL24PC:
4358 if (h != NULL && h == htab->elf.hgot && htab->plt_type == PLT_UNSET)
4359 {
4360 htab->plt_type = PLT_OLD;
4361 htab->old_bfd = abfd;
4362 }
4363 if (h != NULL && h->type == STT_GNU_IFUNC)
4364 {
4365 h->needs_plt = 1;
4366 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
4367 return FALSE;
4368 }
4369 break;
4370
4371 /* This relocation describes the C++ object vtable hierarchy.
4372 Reconstruct it for later use during GC. */
4373 case R_PPC_GNU_VTINHERIT:
4374 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
4375 return FALSE;
4376 break;
4377
4378 /* This relocation describes which C++ vtable entries are actually
4379 used. Record for later use during GC. */
4380 case R_PPC_GNU_VTENTRY:
4381 BFD_ASSERT (h != NULL);
4382 if (h != NULL
4383 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
4384 return FALSE;
4385 break;
4386
4387 /* We shouldn't really be seeing TPREL32. */
4388 case R_PPC_TPREL32:
4389 case R_PPC_TPREL16:
4390 case R_PPC_TPREL16_LO:
4391 case R_PPC_TPREL16_HI:
4392 case R_PPC_TPREL16_HA:
4393 if (bfd_link_dll (info))
4394 info->flags |= DF_STATIC_TLS;
4395 goto dodyn;
4396
4397 /* Nor these. */
4398 case R_PPC_DTPMOD32:
4399 case R_PPC_DTPREL32:
4400 goto dodyn;
4401
4402 case R_PPC_REL32:
4403 if (h == NULL
4404 && got2 != NULL
4405 && (sec->flags & SEC_CODE) != 0
4406 && bfd_link_pic (info)
4407 && htab->plt_type == PLT_UNSET)
4408 {
4409 /* Old -fPIC gcc code has .long LCTOC1-LCFx just before
4410 the start of a function, which assembles to a REL32
4411 reference to .got2. If we detect one of these, then
4412 force the old PLT layout because the linker cannot
4413 reliably deduce the GOT pointer value needed for
4414 PLT call stubs. */
4415 asection *s;
4416 Elf_Internal_Sym *isym;
4417
4418 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
4419 abfd, r_symndx);
4420 if (isym == NULL)
4421 return FALSE;
4422
4423 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
4424 if (s == got2)
4425 {
4426 htab->plt_type = PLT_OLD;
4427 htab->old_bfd = abfd;
4428 }
4429 }
4430 if (h == NULL || h == htab->elf.hgot)
4431 break;
4432 /* fall through */
4433
4434 case R_PPC_ADDR32:
4435 case R_PPC_ADDR16:
4436 case R_PPC_ADDR16_LO:
4437 case R_PPC_ADDR16_HI:
4438 case R_PPC_ADDR16_HA:
4439 case R_PPC_UADDR32:
4440 case R_PPC_UADDR16:
4441 if (h != NULL && !bfd_link_pic (info))
4442 {
4443 /* We may need a plt entry if the symbol turns out to be
4444 a function defined in a dynamic object. */
4445 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
4446 return FALSE;
4447
4448 /* We may need a copy reloc too. */
4449 h->non_got_ref = 1;
4450 h->pointer_equality_needed = 1;
4451 if (r_type == R_PPC_ADDR16_HA)
4452 ppc_elf_hash_entry (h)->has_addr16_ha = 1;
4453 if (r_type == R_PPC_ADDR16_LO)
4454 ppc_elf_hash_entry (h)->has_addr16_lo = 1;
4455 }
4456 goto dodyn;
4457
4458 case R_PPC_REL24:
4459 case R_PPC_REL14:
4460 case R_PPC_REL14_BRTAKEN:
4461 case R_PPC_REL14_BRNTAKEN:
4462 if (h == NULL)
4463 break;
4464 if (h == htab->elf.hgot)
4465 {
4466 if (htab->plt_type == PLT_UNSET)
4467 {
4468 htab->plt_type = PLT_OLD;
4469 htab->old_bfd = abfd;
4470 }
4471 break;
4472 }
4473 /* fall through */
4474
4475 case R_PPC_ADDR24:
4476 case R_PPC_ADDR14:
4477 case R_PPC_ADDR14_BRTAKEN:
4478 case R_PPC_ADDR14_BRNTAKEN:
4479 if (h != NULL && !bfd_link_pic (info))
4480 {
4481 /* We may need a plt entry if the symbol turns out to be
4482 a function defined in a dynamic object. */
4483 h->needs_plt = 1;
4484 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
4485 return FALSE;
4486 break;
4487 }
4488
4489 dodyn:
4490 /* If we are creating a shared library, and this is a reloc
4491 against a global symbol, or a non PC relative reloc
4492 against a local symbol, then we need to copy the reloc
4493 into the shared library. However, if we are linking with
4494 -Bsymbolic, we do not need to copy a reloc against a
4495 global symbol which is defined in an object we are
4496 including in the link (i.e., DEF_REGULAR is set). At
4497 this point we have not seen all the input files, so it is
4498 possible that DEF_REGULAR is not set now but will be set
4499 later (it is never cleared). In case of a weak definition,
4500 DEF_REGULAR may be cleared later by a strong definition in
4501 a shared library. We account for that possibility below by
4502 storing information in the dyn_relocs field of the hash
4503 table entry. A similar situation occurs when creating
4504 shared libraries and symbol visibility changes render the
4505 symbol local.
4506
4507 If on the other hand, we are creating an executable, we
4508 may need to keep relocations for symbols satisfied by a
4509 dynamic library if we manage to avoid copy relocs for the
4510 symbol. */
4511 if ((bfd_link_pic (info)
4512 && (must_be_dyn_reloc (info, r_type)
4513 || (h != NULL
4514 && (!SYMBOLIC_BIND (info, h)
4515 || h->root.type == bfd_link_hash_defweak
4516 || !h->def_regular))))
4517 || (ELIMINATE_COPY_RELOCS
4518 && !bfd_link_pic (info)
4519 && h != NULL
4520 && (h->root.type == bfd_link_hash_defweak
4521 || !h->def_regular)))
4522 {
4523 #ifdef DEBUG
4524 fprintf (stderr,
4525 "ppc_elf_check_relocs needs to "
4526 "create relocation for %s\n",
4527 (h && h->root.root.string
4528 ? h->root.root.string : "<unknown>"));
4529 #endif
4530 if (sreloc == NULL)
4531 {
4532 if (htab->elf.dynobj == NULL)
4533 htab->elf.dynobj = abfd;
4534
4535 sreloc = _bfd_elf_make_dynamic_reloc_section
4536 (sec, htab->elf.dynobj, 2, abfd, /*rela?*/ TRUE);
4537
4538 if (sreloc == NULL)
4539 return FALSE;
4540 }
4541
4542 /* If this is a global symbol, we count the number of
4543 relocations we need for this symbol. */
4544 if (h != NULL)
4545 {
4546 struct elf_dyn_relocs *p;
4547 struct elf_dyn_relocs **rel_head;
4548
4549 rel_head = &ppc_elf_hash_entry (h)->dyn_relocs;
4550 p = *rel_head;
4551 if (p == NULL || p->sec != sec)
4552 {
4553 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
4554 if (p == NULL)
4555 return FALSE;
4556 p->next = *rel_head;
4557 *rel_head = p;
4558 p->sec = sec;
4559 p->count = 0;
4560 p->pc_count = 0;
4561 }
4562 p->count += 1;
4563 if (!must_be_dyn_reloc (info, r_type))
4564 p->pc_count += 1;
4565 }
4566 else
4567 {
4568 /* Track dynamic relocs needed for local syms too.
4569 We really need local syms available to do this
4570 easily. Oh well. */
4571 struct ppc_dyn_relocs *p;
4572 struct ppc_dyn_relocs **rel_head;
4573 bfd_boolean is_ifunc;
4574 asection *s;
4575 void *vpp;
4576 Elf_Internal_Sym *isym;
4577
4578 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
4579 abfd, r_symndx);
4580 if (isym == NULL)
4581 return FALSE;
4582
4583 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
4584 if (s == NULL)
4585 s = sec;
4586
4587 vpp = &elf_section_data (s)->local_dynrel;
4588 rel_head = (struct ppc_dyn_relocs **) vpp;
4589 is_ifunc = ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC;
4590 p = *rel_head;
4591 if (p != NULL && p->sec == sec && p->ifunc != is_ifunc)
4592 p = p->next;
4593 if (p == NULL || p->sec != sec || p->ifunc != is_ifunc)
4594 {
4595 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
4596 if (p == NULL)
4597 return FALSE;
4598 p->next = *rel_head;
4599 *rel_head = p;
4600 p->sec = sec;
4601 p->ifunc = is_ifunc;
4602 p->count = 0;
4603 }
4604 p->count += 1;
4605 }
4606 }
4607
4608 break;
4609 }
4610 }
4611
4612 return TRUE;
4613 }
4614 \f
4615 /* Warn for conflicting Tag_GNU_Power_ABI_FP attributes between IBFD
4616 and OBFD, and merge non-conflicting ones. */
4617 void
4618 _bfd_elf_ppc_merge_fp_attributes (bfd *ibfd, struct bfd_link_info *info)
4619 {
4620 bfd *obfd = info->output_bfd;
4621 obj_attribute *in_attr, *in_attrs;
4622 obj_attribute *out_attr, *out_attrs;
4623
4624 in_attrs = elf_known_obj_attributes (ibfd)[OBJ_ATTR_GNU];
4625 out_attrs = elf_known_obj_attributes (obfd)[OBJ_ATTR_GNU];
4626
4627 in_attr = &in_attrs[Tag_GNU_Power_ABI_FP];
4628 out_attr = &out_attrs[Tag_GNU_Power_ABI_FP];
4629
4630 if (in_attr->i != out_attr->i)
4631 {
4632 int in_fp = in_attr->i & 3;
4633 int out_fp = out_attr->i & 3;
4634
4635 if (in_fp == 0)
4636 ;
4637 else if (out_fp == 0)
4638 {
4639 out_attr->type = 1;
4640 out_attr->i ^= in_fp;
4641 }
4642 else if (out_fp != 2 && in_fp == 2)
4643 _bfd_error_handler
4644 /* xgettext:c-format */
4645 (_("Warning: %B uses hard float, %B uses soft float"), obfd, ibfd);
4646 else if (out_fp == 2 && in_fp != 2)
4647 _bfd_error_handler
4648 /* xgettext:c-format */
4649 (_("Warning: %B uses hard float, %B uses soft float"), ibfd, obfd);
4650 else if (out_fp == 1 && in_fp == 3)
4651 _bfd_error_handler
4652 /* xgettext:c-format */
4653 (_("Warning: %B uses double-precision hard float, "
4654 "%B uses single-precision hard float"), obfd, ibfd);
4655 else if (out_fp == 3 && in_fp == 1)
4656 _bfd_error_handler
4657 /* xgettext:c-format */
4658 (_("Warning: %B uses double-precision hard float, "
4659 "%B uses single-precision hard float"), ibfd, obfd);
4660
4661 in_fp = in_attr->i & 0xc;
4662 out_fp = out_attr->i & 0xc;
4663 if (in_fp == 0)
4664 ;
4665 else if (out_fp == 0)
4666 {
4667 out_attr->type = 1;
4668 out_attr->i ^= in_fp;
4669 }
4670 else if (out_fp != 2 * 4 && in_fp == 2 * 4)
4671 _bfd_error_handler
4672 /* xgettext:c-format */
4673 (_("Warning: %B uses 64-bit long double, "
4674 "%B uses 128-bit long double"), ibfd, obfd);
4675 else if (in_fp != 2 * 4 && out_fp == 2 * 4)
4676 _bfd_error_handler
4677 /* xgettext:c-format */
4678 (_("Warning: %B uses 64-bit long double, "
4679 "%B uses 128-bit long double"), obfd, ibfd);
4680 else if (out_fp == 1 * 4 && in_fp == 3 * 4)
4681 _bfd_error_handler
4682 /* xgettext:c-format */
4683 (_("Warning: %B uses IBM long double, "
4684 "%B uses IEEE long double"), ibfd, obfd);
4685 else if (out_fp == 3 * 4 && in_fp == 1 * 4)
4686 _bfd_error_handler
4687 /* xgettext:c-format */
4688 (_("Warning: %B uses IBM long double, "
4689 "%B uses IEEE long double"), obfd, ibfd);
4690 }
4691 }
4692
4693 /* Merge object attributes from IBFD into OBFD. Warn if
4694 there are conflicting attributes. */
4695 static bfd_boolean
4696 ppc_elf_merge_obj_attributes (bfd *ibfd, struct bfd_link_info *info)
4697 {
4698 bfd *obfd;
4699 obj_attribute *in_attr, *in_attrs;
4700 obj_attribute *out_attr, *out_attrs;
4701
4702 _bfd_elf_ppc_merge_fp_attributes (ibfd, info);
4703
4704 obfd = info->output_bfd;
4705 in_attrs = elf_known_obj_attributes (ibfd)[OBJ_ATTR_GNU];
4706 out_attrs = elf_known_obj_attributes (obfd)[OBJ_ATTR_GNU];
4707
4708 /* Check for conflicting Tag_GNU_Power_ABI_Vector attributes and
4709 merge non-conflicting ones. */
4710 in_attr = &in_attrs[Tag_GNU_Power_ABI_Vector];
4711 out_attr = &out_attrs[Tag_GNU_Power_ABI_Vector];
4712 if (in_attr->i != out_attr->i)
4713 {
4714 int in_vec = in_attr->i & 3;
4715 int out_vec = out_attr->i & 3;
4716
4717 if (in_vec == 0)
4718 ;
4719 else if (out_vec == 0)
4720 {
4721 out_attr->type = 1;
4722 out_attr->i = in_vec;
4723 }
4724 /* For now, allow generic to transition to AltiVec or SPE
4725 without a warning. If GCC marked files with their stack
4726 alignment and used don't-care markings for files which are
4727 not affected by the vector ABI, we could warn about this
4728 case too. */
4729 else if (in_vec == 1)
4730 ;
4731 else if (out_vec == 1)
4732 {
4733 out_attr->type = 1;
4734 out_attr->i = in_vec;
4735 }
4736 else if (out_vec < in_vec)
4737 _bfd_error_handler
4738 /* xgettext:c-format */
4739 (_("Warning: %B uses AltiVec vector ABI, %B uses SPE vector ABI"),
4740 obfd, ibfd);
4741 else if (out_vec > in_vec)
4742 _bfd_error_handler
4743 /* xgettext:c-format */
4744 (_("Warning: %B uses AltiVec vector ABI, %B uses SPE vector ABI"),
4745 ibfd, obfd);
4746 }
4747
4748 /* Check for conflicting Tag_GNU_Power_ABI_Struct_Return attributes
4749 and merge non-conflicting ones. */
4750 in_attr = &in_attrs[Tag_GNU_Power_ABI_Struct_Return];
4751 out_attr = &out_attrs[Tag_GNU_Power_ABI_Struct_Return];
4752 if (in_attr->i != out_attr->i)
4753 {
4754 int in_struct = in_attr->i & 3;
4755 int out_struct = out_attr->i & 3;
4756
4757 if (in_struct == 0 || in_struct == 3)
4758 ;
4759 else if (out_struct == 0)
4760 {
4761 out_attr->type = 1;
4762 out_attr->i = in_struct;
4763 }
4764 else if (out_struct < in_struct)
4765 _bfd_error_handler
4766 /* xgettext:c-format */
4767 (_("Warning: %B uses r3/r4 for small structure returns, "
4768 "%B uses memory"), obfd, ibfd);
4769 else if (out_struct > in_struct)
4770 _bfd_error_handler
4771 /* xgettext:c-format */
4772 (_("Warning: %B uses r3/r4 for small structure returns, "
4773 "%B uses memory"), ibfd, obfd);
4774 }
4775
4776 /* Merge Tag_compatibility attributes and any common GNU ones. */
4777 _bfd_elf_merge_object_attributes (ibfd, info);
4778
4779 return TRUE;
4780 }
4781
4782 /* Merge backend specific data from an object file to the output
4783 object file when linking. */
4784
4785 static bfd_boolean
4786 ppc_elf_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info)
4787 {
4788 bfd *obfd = info->output_bfd;
4789 flagword old_flags;
4790 flagword new_flags;
4791 bfd_boolean error;
4792
4793 if (!is_ppc_elf (ibfd) || !is_ppc_elf (obfd))
4794 return TRUE;
4795
4796 /* Check if we have the same endianness. */
4797 if (! _bfd_generic_verify_endian_match (ibfd, info))
4798 return FALSE;
4799
4800 if (!ppc_elf_merge_obj_attributes (ibfd, info))
4801 return FALSE;
4802
4803 new_flags = elf_elfheader (ibfd)->e_flags;
4804 old_flags = elf_elfheader (obfd)->e_flags;
4805 if (!elf_flags_init (obfd))
4806 {
4807 /* First call, no flags set. */
4808 elf_flags_init (obfd) = TRUE;
4809 elf_elfheader (obfd)->e_flags = new_flags;
4810 }
4811
4812 /* Compatible flags are ok. */
4813 else if (new_flags == old_flags)
4814 ;
4815
4816 /* Incompatible flags. */
4817 else
4818 {
4819 /* Warn about -mrelocatable mismatch. Allow -mrelocatable-lib
4820 to be linked with either. */
4821 error = FALSE;
4822 if ((new_flags & EF_PPC_RELOCATABLE) != 0
4823 && (old_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0)
4824 {
4825 error = TRUE;
4826 _bfd_error_handler
4827 (_("%B: compiled with -mrelocatable and linked with "
4828 "modules compiled normally"), ibfd);
4829 }
4830 else if ((new_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0
4831 && (old_flags & EF_PPC_RELOCATABLE) != 0)
4832 {
4833 error = TRUE;
4834 _bfd_error_handler
4835 (_("%B: compiled normally and linked with "
4836 "modules compiled with -mrelocatable"), ibfd);
4837 }
4838
4839 /* The output is -mrelocatable-lib iff both the input files are. */
4840 if (! (new_flags & EF_PPC_RELOCATABLE_LIB))
4841 elf_elfheader (obfd)->e_flags &= ~EF_PPC_RELOCATABLE_LIB;
4842
4843 /* The output is -mrelocatable iff it can't be -mrelocatable-lib,
4844 but each input file is either -mrelocatable or -mrelocatable-lib. */
4845 if (! (elf_elfheader (obfd)->e_flags & EF_PPC_RELOCATABLE_LIB)
4846 && (new_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE))
4847 && (old_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE)))
4848 elf_elfheader (obfd)->e_flags |= EF_PPC_RELOCATABLE;
4849
4850 /* Do not warn about eabi vs. V.4 mismatch, just or in the bit if
4851 any module uses it. */
4852 elf_elfheader (obfd)->e_flags |= (new_flags & EF_PPC_EMB);
4853
4854 new_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
4855 old_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
4856
4857 /* Warn about any other mismatches. */
4858 if (new_flags != old_flags)
4859 {
4860 error = TRUE;
4861 _bfd_error_handler
4862 /* xgettext:c-format */
4863 (_("%B: uses different e_flags (%#x) fields "
4864 "than previous modules (%#x)"),
4865 ibfd, new_flags, old_flags);
4866 }
4867
4868 if (error)
4869 {
4870 bfd_set_error (bfd_error_bad_value);
4871 return FALSE;
4872 }
4873 }
4874
4875 return TRUE;
4876 }
4877
4878 static void
4879 ppc_elf_vle_split16 (bfd *input_bfd,
4880 asection *input_section,
4881 unsigned long offset,
4882 bfd_byte *loc,
4883 bfd_vma value,
4884 split16_format_type split16_format,
4885 bfd_boolean fixup)
4886 {
4887 unsigned int insn, opcode, top5;
4888
4889 insn = bfd_get_32 (input_bfd, loc);
4890 opcode = insn & 0xfc00f800;
4891 if (opcode == E_OR2I_INSN
4892 || opcode == E_AND2I_DOT_INSN
4893 || opcode == E_OR2IS_INSN
4894 || opcode == E_LIS_INSN
4895 || opcode == E_AND2IS_DOT_INSN)
4896 {
4897 if (split16_format != split16a_type)
4898 {
4899 if (fixup)
4900 split16_format = split16a_type;
4901 else
4902 _bfd_error_handler
4903 /* xgettext:c-format */
4904 (_("%B(%A+0x%lx): expected 16A style relocation on 0x%08x insn"),
4905 input_bfd, input_section, offset, opcode);
4906 }
4907 }
4908 else if (opcode == E_ADD2I_DOT_INSN
4909 || opcode == E_ADD2IS_INSN
4910 || opcode == E_CMP16I_INSN
4911 || opcode == E_MULL2I_INSN
4912 || opcode == E_CMPL16I_INSN
4913 || opcode == E_CMPH16I_INSN
4914 || opcode == E_CMPHL16I_INSN)
4915 {
4916 if (split16_format != split16d_type)
4917 {
4918 if (fixup)
4919 split16_format = split16d_type;
4920 else
4921 _bfd_error_handler
4922 /* xgettext:c-format */
4923 (_("%B(%A+0x%lx): expected 16D style relocation on 0x%08x insn"),
4924 input_bfd, input_section, offset, opcode);
4925 }
4926 }
4927 top5 = value & 0xf800;
4928 top5 = top5 << (split16_format == split16a_type ? 5 : 10);
4929 insn &= (split16_format == split16a_type ? ~0x1f07ff : ~0x3e007ff);
4930 insn |= top5;
4931 insn |= value & 0x7ff;
4932 bfd_put_32 (input_bfd, insn, loc);
4933 }
4934
4935 static void
4936 ppc_elf_vle_split20 (bfd *output_bfd, bfd_byte *loc, bfd_vma value)
4937 {
4938 unsigned int insn;
4939
4940 insn = bfd_get_32 (output_bfd, loc);
4941 /* We have an li20 field, bits 17..20, 11..15, 21..31. */
4942 /* Top 4 bits of value to 17..20. */
4943 insn |= (value & 0xf0000) >> 5;
4944 /* Next 5 bits of the value to 11..15. */
4945 insn |= (value & 0xf800) << 5;
4946 /* And the final 11 bits of the value to bits 21 to 31. */
4947 insn |= value & 0x7ff;
4948 bfd_put_32 (output_bfd, insn, loc);
4949 }
4950
4951 \f
4952 /* Choose which PLT scheme to use, and set .plt flags appropriately.
4953 Returns -1 on error, 0 for old PLT, 1 for new PLT. */
4954 int
4955 ppc_elf_select_plt_layout (bfd *output_bfd ATTRIBUTE_UNUSED,
4956 struct bfd_link_info *info)
4957 {
4958 struct ppc_elf_link_hash_table *htab;
4959 flagword flags;
4960
4961 htab = ppc_elf_hash_table (info);
4962
4963 if (htab->plt_type == PLT_UNSET)
4964 {
4965 struct elf_link_hash_entry *h;
4966
4967 if (htab->params->plt_style == PLT_OLD)
4968 htab->plt_type = PLT_OLD;
4969 else if (bfd_link_pic (info)
4970 && htab->elf.dynamic_sections_created
4971 && (h = elf_link_hash_lookup (&htab->elf, "_mcount",
4972 FALSE, FALSE, TRUE)) != NULL
4973 && (h->type == STT_FUNC
4974 || h->needs_plt)
4975 && h->ref_regular
4976 && !(SYMBOL_CALLS_LOCAL (info, h)
4977 || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)))
4978 {
4979 /* Profiling of shared libs (and pies) is not supported with
4980 secure plt, because ppc32 does profiling before a
4981 function prologue and a secure plt pic call stubs needs
4982 r30 to be set up. */
4983 htab->plt_type = PLT_OLD;
4984 }
4985 else
4986 {
4987 bfd *ibfd;
4988 enum ppc_elf_plt_type plt_type = htab->params->plt_style;
4989
4990 /* Look through the reloc flags left by ppc_elf_check_relocs.
4991 Use the old style bss plt if a file makes plt calls
4992 without using the new relocs, and if ld isn't given
4993 --secure-plt and we never see REL16 relocs. */
4994 if (plt_type == PLT_UNSET)
4995 plt_type = PLT_OLD;
4996 for (ibfd = info->input_bfds; ibfd; ibfd = ibfd->link.next)
4997 if (is_ppc_elf (ibfd))
4998 {
4999 if (ppc_elf_tdata (ibfd)->has_rel16)
5000 plt_type = PLT_NEW;
5001 else if (ppc_elf_tdata (ibfd)->makes_plt_call)
5002 {
5003 plt_type = PLT_OLD;
5004 htab->old_bfd = ibfd;
5005 break;
5006 }
5007 }
5008 htab->plt_type = plt_type;
5009 }
5010 }
5011 if (htab->plt_type == PLT_OLD && htab->params->plt_style == PLT_NEW)
5012 {
5013 if (htab->old_bfd != NULL)
5014 info->callbacks->einfo (_("%P: bss-plt forced due to %B\n"),
5015 htab->old_bfd);
5016 else
5017 info->callbacks->einfo (_("%P: bss-plt forced by profiling\n"));
5018 }
5019
5020 BFD_ASSERT (htab->plt_type != PLT_VXWORKS);
5021
5022 if (htab->plt_type == PLT_NEW)
5023 {
5024 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
5025 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
5026
5027 /* The new PLT is a loaded section. */
5028 if (htab->elf.splt != NULL
5029 && !bfd_set_section_flags (htab->elf.dynobj, htab->elf.splt, flags))
5030 return -1;
5031
5032 /* The new GOT is not executable. */
5033 if (htab->elf.sgot != NULL
5034 && !bfd_set_section_flags (htab->elf.dynobj, htab->elf.sgot, flags))
5035 return -1;
5036 }
5037 else
5038 {
5039 /* Stop an unused .glink section from affecting .text alignment. */
5040 if (htab->glink != NULL
5041 && !bfd_set_section_alignment (htab->elf.dynobj, htab->glink, 0))
5042 return -1;
5043 }
5044 return htab->plt_type == PLT_NEW;
5045 }
5046 \f
5047 /* Return the section that should be marked against GC for a given
5048 relocation. */
5049
5050 static asection *
5051 ppc_elf_gc_mark_hook (asection *sec,
5052 struct bfd_link_info *info,
5053 Elf_Internal_Rela *rel,
5054 struct elf_link_hash_entry *h,
5055 Elf_Internal_Sym *sym)
5056 {
5057 if (h != NULL)
5058 switch (ELF32_R_TYPE (rel->r_info))
5059 {
5060 case R_PPC_GNU_VTINHERIT:
5061 case R_PPC_GNU_VTENTRY:
5062 return NULL;
5063 }
5064
5065 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
5066 }
5067 \f
5068 /* Set plt output section type, htab->tls_get_addr, and call the
5069 generic ELF tls_setup function. */
5070
5071 asection *
5072 ppc_elf_tls_setup (bfd *obfd, struct bfd_link_info *info)
5073 {
5074 struct ppc_elf_link_hash_table *htab;
5075
5076 htab = ppc_elf_hash_table (info);
5077 htab->tls_get_addr = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
5078 FALSE, FALSE, TRUE);
5079 if (htab->plt_type != PLT_NEW)
5080 htab->params->no_tls_get_addr_opt = TRUE;
5081
5082 if (!htab->params->no_tls_get_addr_opt)
5083 {
5084 struct elf_link_hash_entry *opt, *tga;
5085 opt = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_opt",
5086 FALSE, FALSE, TRUE);
5087 if (opt != NULL
5088 && (opt->root.type == bfd_link_hash_defined
5089 || opt->root.type == bfd_link_hash_defweak))
5090 {
5091 /* If glibc supports an optimized __tls_get_addr call stub,
5092 signalled by the presence of __tls_get_addr_opt, and we'll
5093 be calling __tls_get_addr via a plt call stub, then
5094 make __tls_get_addr point to __tls_get_addr_opt. */
5095 tga = htab->tls_get_addr;
5096 if (htab->elf.dynamic_sections_created
5097 && tga != NULL
5098 && (tga->type == STT_FUNC
5099 || tga->needs_plt)
5100 && !(SYMBOL_CALLS_LOCAL (info, tga)
5101 || UNDEFWEAK_NO_DYNAMIC_RELOC (info, tga)))
5102 {
5103 struct plt_entry *ent;
5104 for (ent = tga->plt.plist; ent != NULL; ent = ent->next)
5105 if (ent->plt.refcount > 0)
5106 break;
5107 if (ent != NULL)
5108 {
5109 tga->root.type = bfd_link_hash_indirect;
5110 tga->root.u.i.link = &opt->root;
5111 ppc_elf_copy_indirect_symbol (info, opt, tga);
5112 opt->mark = 1;
5113 if (opt->dynindx != -1)
5114 {
5115 /* Use __tls_get_addr_opt in dynamic relocations. */
5116 opt->dynindx = -1;
5117 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
5118 opt->dynstr_index);
5119 if (!bfd_elf_link_record_dynamic_symbol (info, opt))
5120 return FALSE;
5121 }
5122 htab->tls_get_addr = opt;
5123 }
5124 }
5125 }
5126 else
5127 htab->params->no_tls_get_addr_opt = TRUE;
5128 }
5129 if (htab->plt_type == PLT_NEW
5130 && htab->elf.splt != NULL
5131 && htab->elf.splt->output_section != NULL)
5132 {
5133 elf_section_type (htab->elf.splt->output_section) = SHT_PROGBITS;
5134 elf_section_flags (htab->elf.splt->output_section) = SHF_ALLOC + SHF_WRITE;
5135 }
5136
5137 return _bfd_elf_tls_setup (obfd, info);
5138 }
5139
5140 /* Return TRUE iff REL is a branch reloc with a global symbol matching
5141 HASH. */
5142
5143 static bfd_boolean
5144 branch_reloc_hash_match (const bfd *ibfd,
5145 const Elf_Internal_Rela *rel,
5146 const struct elf_link_hash_entry *hash)
5147 {
5148 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
5149 enum elf_ppc_reloc_type r_type = ELF32_R_TYPE (rel->r_info);
5150 unsigned int r_symndx = ELF32_R_SYM (rel->r_info);
5151
5152 if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type))
5153 {
5154 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
5155 struct elf_link_hash_entry *h;
5156
5157 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5158 while (h->root.type == bfd_link_hash_indirect
5159 || h->root.type == bfd_link_hash_warning)
5160 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5161 if (h == hash)
5162 return TRUE;
5163 }
5164 return FALSE;
5165 }
5166
5167 /* Run through all the TLS relocs looking for optimization
5168 opportunities. */
5169
5170 bfd_boolean
5171 ppc_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED,
5172 struct bfd_link_info *info)
5173 {
5174 bfd *ibfd;
5175 asection *sec;
5176 struct ppc_elf_link_hash_table *htab;
5177 int pass;
5178
5179 if (!bfd_link_executable (info))
5180 return TRUE;
5181
5182 htab = ppc_elf_hash_table (info);
5183 if (htab == NULL)
5184 return FALSE;
5185
5186 /* Make two passes through the relocs. First time check that tls
5187 relocs involved in setting up a tls_get_addr call are indeed
5188 followed by such a call. If they are not, don't do any tls
5189 optimization. On the second pass twiddle tls_mask flags to
5190 notify relocate_section that optimization can be done, and
5191 adjust got and plt refcounts. */
5192 for (pass = 0; pass < 2; ++pass)
5193 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
5194 {
5195 Elf_Internal_Sym *locsyms = NULL;
5196 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
5197 asection *got2 = bfd_get_section_by_name (ibfd, ".got2");
5198
5199 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
5200 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
5201 {
5202 Elf_Internal_Rela *relstart, *rel, *relend;
5203 int expecting_tls_get_addr = 0;
5204
5205 /* Read the relocations. */
5206 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
5207 info->keep_memory);
5208 if (relstart == NULL)
5209 return FALSE;
5210
5211 relend = relstart + sec->reloc_count;
5212 for (rel = relstart; rel < relend; rel++)
5213 {
5214 enum elf_ppc_reloc_type r_type;
5215 unsigned long r_symndx;
5216 struct elf_link_hash_entry *h = NULL;
5217 char *tls_mask;
5218 char tls_set, tls_clear;
5219 bfd_boolean is_local;
5220 bfd_signed_vma *got_count;
5221
5222 r_symndx = ELF32_R_SYM (rel->r_info);
5223 if (r_symndx >= symtab_hdr->sh_info)
5224 {
5225 struct elf_link_hash_entry **sym_hashes;
5226
5227 sym_hashes = elf_sym_hashes (ibfd);
5228 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5229 while (h->root.type == bfd_link_hash_indirect
5230 || h->root.type == bfd_link_hash_warning)
5231 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5232 }
5233
5234 is_local = FALSE;
5235 if (h == NULL
5236 || !h->def_dynamic)
5237 is_local = TRUE;
5238
5239 r_type = ELF32_R_TYPE (rel->r_info);
5240 /* If this section has old-style __tls_get_addr calls
5241 without marker relocs, then check that each
5242 __tls_get_addr call reloc is preceded by a reloc
5243 that conceivably belongs to the __tls_get_addr arg
5244 setup insn. If we don't find matching arg setup
5245 relocs, don't do any tls optimization. */
5246 if (pass == 0
5247 && sec->has_tls_get_addr_call
5248 && h != NULL
5249 && h == htab->tls_get_addr
5250 && !expecting_tls_get_addr
5251 && is_branch_reloc (r_type))
5252 {
5253 info->callbacks->minfo ("%H __tls_get_addr lost arg, "
5254 "TLS optimization disabled\n",
5255 ibfd, sec, rel->r_offset);
5256 if (elf_section_data (sec)->relocs != relstart)
5257 free (relstart);
5258 return TRUE;
5259 }
5260
5261 expecting_tls_get_addr = 0;
5262 switch (r_type)
5263 {
5264 case R_PPC_GOT_TLSLD16:
5265 case R_PPC_GOT_TLSLD16_LO:
5266 expecting_tls_get_addr = 1;
5267 /* Fall through. */
5268
5269 case R_PPC_GOT_TLSLD16_HI:
5270 case R_PPC_GOT_TLSLD16_HA:
5271 /* These relocs should never be against a symbol
5272 defined in a shared lib. Leave them alone if
5273 that turns out to be the case. */
5274 if (!is_local)
5275 continue;
5276
5277 /* LD -> LE */
5278 tls_set = 0;
5279 tls_clear = TLS_LD;
5280 break;
5281
5282 case R_PPC_GOT_TLSGD16:
5283 case R_PPC_GOT_TLSGD16_LO:
5284 expecting_tls_get_addr = 1;
5285 /* Fall through. */
5286
5287 case R_PPC_GOT_TLSGD16_HI:
5288 case R_PPC_GOT_TLSGD16_HA:
5289 if (is_local)
5290 /* GD -> LE */
5291 tls_set = 0;
5292 else
5293 /* GD -> IE */
5294 tls_set = TLS_TLS | TLS_TPRELGD;
5295 tls_clear = TLS_GD;
5296 break;
5297
5298 case R_PPC_GOT_TPREL16:
5299 case R_PPC_GOT_TPREL16_LO:
5300 case R_PPC_GOT_TPREL16_HI:
5301 case R_PPC_GOT_TPREL16_HA:
5302 if (is_local)
5303 {
5304 /* IE -> LE */
5305 tls_set = 0;
5306 tls_clear = TLS_TPREL;
5307 break;
5308 }
5309 else
5310 continue;
5311
5312 case R_PPC_TLSGD:
5313 case R_PPC_TLSLD:
5314 expecting_tls_get_addr = 2;
5315 tls_set = 0;
5316 tls_clear = 0;
5317 break;
5318
5319 default:
5320 continue;
5321 }
5322
5323 if (pass == 0)
5324 {
5325 if (!expecting_tls_get_addr
5326 || (expecting_tls_get_addr == 1
5327 && !sec->has_tls_get_addr_call))
5328 continue;
5329
5330 if (rel + 1 < relend
5331 && branch_reloc_hash_match (ibfd, rel + 1,
5332 htab->tls_get_addr))
5333 continue;
5334
5335 /* Uh oh, we didn't find the expected call. We
5336 could just mark this symbol to exclude it
5337 from tls optimization but it's safer to skip
5338 the entire optimization. */
5339 info->callbacks->minfo (_("%H arg lost __tls_get_addr, "
5340 "TLS optimization disabled\n"),
5341 ibfd, sec, rel->r_offset);
5342 if (elf_section_data (sec)->relocs != relstart)
5343 free (relstart);
5344 return TRUE;
5345 }
5346
5347 if (expecting_tls_get_addr)
5348 {
5349 struct plt_entry *ent;
5350 bfd_vma addend = 0;
5351
5352 if (bfd_link_pic (info)
5353 && ELF32_R_TYPE (rel[1].r_info) == R_PPC_PLTREL24)
5354 addend = rel[1].r_addend;
5355 ent = find_plt_ent (&htab->tls_get_addr->plt.plist,
5356 got2, addend);
5357 if (ent != NULL && ent->plt.refcount > 0)
5358 ent->plt.refcount -= 1;
5359
5360 if (expecting_tls_get_addr == 2)
5361 continue;
5362 }
5363
5364 if (h != NULL)
5365 {
5366 tls_mask = &ppc_elf_hash_entry (h)->tls_mask;
5367 got_count = &h->got.refcount;
5368 }
5369 else
5370 {
5371 bfd_signed_vma *lgot_refs;
5372 struct plt_entry **local_plt;
5373 char *lgot_masks;
5374
5375 if (locsyms == NULL)
5376 {
5377 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
5378 if (locsyms == NULL)
5379 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
5380 symtab_hdr->sh_info,
5381 0, NULL, NULL, NULL);
5382 if (locsyms == NULL)
5383 {
5384 if (elf_section_data (sec)->relocs != relstart)
5385 free (relstart);
5386 return FALSE;
5387 }
5388 }
5389 lgot_refs = elf_local_got_refcounts (ibfd);
5390 if (lgot_refs == NULL)
5391 abort ();
5392 local_plt = (struct plt_entry **)
5393 (lgot_refs + symtab_hdr->sh_info);
5394 lgot_masks = (char *) (local_plt + symtab_hdr->sh_info);
5395 tls_mask = &lgot_masks[r_symndx];
5396 got_count = &lgot_refs[r_symndx];
5397 }
5398
5399 if (tls_set == 0)
5400 {
5401 /* We managed to get rid of a got entry. */
5402 if (*got_count > 0)
5403 *got_count -= 1;
5404 }
5405
5406 *tls_mask |= tls_set;
5407 *tls_mask &= ~tls_clear;
5408 }
5409
5410 if (elf_section_data (sec)->relocs != relstart)
5411 free (relstart);
5412 }
5413
5414 if (locsyms != NULL
5415 && (symtab_hdr->contents != (unsigned char *) locsyms))
5416 {
5417 if (!info->keep_memory)
5418 free (locsyms);
5419 else
5420 symtab_hdr->contents = (unsigned char *) locsyms;
5421 }
5422 }
5423 htab->do_tls_opt = 1;
5424 return TRUE;
5425 }
5426 \f
5427 /* Return true if we have dynamic relocs that apply to read-only sections. */
5428
5429 static bfd_boolean
5430 readonly_dynrelocs (struct elf_link_hash_entry *h,
5431 struct bfd_link_info *info)
5432 {
5433 struct elf_dyn_relocs *p;
5434
5435 for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next)
5436 {
5437 asection *s = p->sec->output_section;
5438
5439 if (s != NULL
5440 && ((s->flags & (SEC_READONLY | SEC_ALLOC))
5441 == (SEC_READONLY | SEC_ALLOC)))
5442 {
5443 if (info)
5444 info->callbacks->minfo (_("%B: dynamic relocation in read-only section `%A'\n"),
5445 p->sec->owner, p->sec);
5446
5447 return TRUE;
5448 }
5449 }
5450 return FALSE;
5451 }
5452
5453 /* Adjust a symbol defined by a dynamic object and referenced by a
5454 regular object. The current definition is in some section of the
5455 dynamic object, but we're not including those sections. We have to
5456 change the definition to something the rest of the link can
5457 understand. */
5458
5459 static bfd_boolean
5460 ppc_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
5461 struct elf_link_hash_entry *h)
5462 {
5463 struct ppc_elf_link_hash_table *htab;
5464 asection *s;
5465
5466 #ifdef DEBUG
5467 fprintf (stderr, "ppc_elf_adjust_dynamic_symbol called for %s\n",
5468 h->root.root.string);
5469 #endif
5470
5471 /* Make sure we know what is going on here. */
5472 htab = ppc_elf_hash_table (info);
5473 BFD_ASSERT (htab->elf.dynobj != NULL
5474 && (h->needs_plt
5475 || h->type == STT_GNU_IFUNC
5476 || h->u.weakdef != NULL
5477 || (h->def_dynamic
5478 && h->ref_regular
5479 && !h->def_regular)));
5480
5481 /* Deal with function syms. */
5482 if (h->type == STT_FUNC
5483 || h->type == STT_GNU_IFUNC
5484 || h->needs_plt)
5485 {
5486 /* Clear procedure linkage table information for any symbol that
5487 won't need a .plt entry. */
5488 struct plt_entry *ent;
5489 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
5490 if (ent->plt.refcount > 0)
5491 break;
5492 if (ent == NULL
5493 || (h->type != STT_GNU_IFUNC
5494 && (SYMBOL_CALLS_LOCAL (info, h)
5495 || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h))))
5496 {
5497 /* A PLT entry is not required/allowed when:
5498
5499 1. We are not using ld.so; because then the PLT entry
5500 can't be set up, so we can't use one. In this case,
5501 ppc_elf_adjust_dynamic_symbol won't even be called.
5502
5503 2. GC has rendered the entry unused.
5504
5505 3. We know for certain that a call to this symbol
5506 will go to this object, or will remain undefined. */
5507 h->plt.plist = NULL;
5508 h->needs_plt = 0;
5509 h->pointer_equality_needed = 0;
5510 /* After adjust_dynamic_symbol, non_got_ref set in the
5511 non-pic case means that dyn_relocs for this symbol should
5512 be discarded. We either want the symbol to remain
5513 undefined, or we have a local definition of some sort.
5514 The "local definition" for non-function symbols may be
5515 due to creating a local definition in .dynbss, and for
5516 function symbols, defining the symbol on the PLT call
5517 stub code. Set non_got_ref here to ensure undef weaks
5518 stay undefined. */
5519 h->non_got_ref = 1;
5520 }
5521 else
5522 {
5523 /* Taking a function's address in a read/write section
5524 doesn't require us to define the function symbol in the
5525 executable on a plt call stub. A dynamic reloc can
5526 be used instead, giving better runtime performance.
5527 (Calls via that function pointer don't need to bounce
5528 through the plt call stub.) Similarly, use a dynamic
5529 reloc for a weak reference when possible, allowing the
5530 resolution of the symbol to be set at load time rather
5531 than link time. */
5532 if ((h->pointer_equality_needed
5533 || (h->non_got_ref
5534 && !h->ref_regular_nonweak
5535 && !UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)))
5536 && !htab->is_vxworks
5537 && !ppc_elf_hash_entry (h)->has_sda_refs
5538 && !readonly_dynrelocs (h, NULL))
5539 {
5540 h->pointer_equality_needed = 0;
5541 /* Say that we do want dynamic relocs. */
5542 h->non_got_ref = 0;
5543 /* If we haven't seen a branch reloc then we don't need
5544 a plt entry. */
5545 if (!h->needs_plt)
5546 h->plt.plist = NULL;
5547 }
5548 }
5549 h->protected_def = 0;
5550 /* Function symbols can't have copy relocs. */
5551 return TRUE;
5552 }
5553 else
5554 h->plt.plist = NULL;
5555
5556 /* If this is a weak symbol, and there is a real definition, the
5557 processor independent code will have arranged for us to see the
5558 real definition first, and we can just use the same value. */
5559 if (h->u.weakdef != NULL)
5560 {
5561 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
5562 || h->u.weakdef->root.type == bfd_link_hash_defweak);
5563 h->root.u.def.section = h->u.weakdef->root.u.def.section;
5564 h->root.u.def.value = h->u.weakdef->root.u.def.value;
5565 if (ELIMINATE_COPY_RELOCS)
5566 h->non_got_ref = h->u.weakdef->non_got_ref;
5567 return TRUE;
5568 }
5569
5570 /* This is a reference to a symbol defined by a dynamic object which
5571 is not a function. */
5572
5573 /* If we are creating a shared library, we must presume that the
5574 only references to the symbol are via the global offset table.
5575 For such cases we need not do anything here; the relocations will
5576 be handled correctly by relocate_section. */
5577 if (bfd_link_pic (info))
5578 {
5579 h->protected_def = 0;
5580 return TRUE;
5581 }
5582
5583 /* If there are no references to this symbol that do not use the
5584 GOT, we don't need to generate a copy reloc. */
5585 if (!h->non_got_ref)
5586 {
5587 h->protected_def = 0;
5588 return TRUE;
5589 }
5590
5591 /* Protected variables do not work with .dynbss. The copy in
5592 .dynbss won't be used by the shared library with the protected
5593 definition for the variable. Editing to PIC, or text relocations
5594 are preferable to an incorrect program. */
5595 if (h->protected_def)
5596 {
5597 if (ELIMINATE_COPY_RELOCS
5598 && ppc_elf_hash_entry (h)->has_addr16_ha
5599 && ppc_elf_hash_entry (h)->has_addr16_lo
5600 && htab->params->pic_fixup == 0
5601 && info->disable_target_specific_optimizations <= 1)
5602 htab->params->pic_fixup = 1;
5603 h->non_got_ref = 0;
5604 return TRUE;
5605 }
5606
5607 /* If -z nocopyreloc was given, we won't generate them either. */
5608 if (info->nocopyreloc)
5609 {
5610 h->non_got_ref = 0;
5611 return TRUE;
5612 }
5613
5614 /* If we didn't find any dynamic relocs in read-only sections, then
5615 we'll be keeping the dynamic relocs and avoiding the copy reloc.
5616 We can't do this if there are any small data relocations. This
5617 doesn't work on VxWorks, where we can not have dynamic
5618 relocations (other than copy and jump slot relocations) in an
5619 executable. */
5620 if (ELIMINATE_COPY_RELOCS
5621 && !ppc_elf_hash_entry (h)->has_sda_refs
5622 && !htab->is_vxworks
5623 && !h->def_regular
5624 && !readonly_dynrelocs (h, NULL))
5625 {
5626 h->non_got_ref = 0;
5627 return TRUE;
5628 }
5629
5630 /* We must allocate the symbol in our .dynbss section, which will
5631 become part of the .bss section of the executable. There will be
5632 an entry for this symbol in the .dynsym section. The dynamic
5633 object will contain position independent code, so all references
5634 from the dynamic object to this symbol will go through the global
5635 offset table. The dynamic linker will use the .dynsym entry to
5636 determine the address it must put in the global offset table, so
5637 both the dynamic object and the regular object will refer to the
5638 same memory location for the variable.
5639
5640 Of course, if the symbol is referenced using SDAREL relocs, we
5641 must instead allocate it in .sbss. */
5642
5643 if (ppc_elf_hash_entry (h)->has_sda_refs)
5644 s = htab->dynsbss;
5645 else if ((h->root.u.def.section->flags & SEC_READONLY) != 0)
5646 s = htab->elf.sdynrelro;
5647 else
5648 s = htab->elf.sdynbss;
5649 BFD_ASSERT (s != NULL);
5650
5651 /* We must generate a R_PPC_COPY reloc to tell the dynamic linker to
5652 copy the initial value out of the dynamic object and into the
5653 runtime process image. We need to remember the offset into the
5654 .rela.bss section we are going to use. */
5655 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
5656 {
5657 asection *srel;
5658
5659 if (ppc_elf_hash_entry (h)->has_sda_refs)
5660 srel = htab->relsbss;
5661 else if ((h->root.u.def.section->flags & SEC_READONLY) != 0)
5662 srel = htab->elf.sreldynrelro;
5663 else
5664 srel = htab->elf.srelbss;
5665 BFD_ASSERT (srel != NULL);
5666 srel->size += sizeof (Elf32_External_Rela);
5667 h->needs_copy = 1;
5668 }
5669
5670 return _bfd_elf_adjust_dynamic_copy (info, h, s);
5671 }
5672 \f
5673 /* Generate a symbol to mark plt call stubs. For non-PIC code the sym is
5674 xxxxxxxx.plt_call32.<callee> where xxxxxxxx is a hex number, usually 0,
5675 specifying the addend on the plt relocation. For -fpic code, the sym
5676 is xxxxxxxx.plt_pic32.<callee>, and for -fPIC
5677 xxxxxxxx.got2.plt_pic32.<callee>. */
5678
5679 static bfd_boolean
5680 add_stub_sym (struct plt_entry *ent,
5681 struct elf_link_hash_entry *h,
5682 struct bfd_link_info *info)
5683 {
5684 struct elf_link_hash_entry *sh;
5685 size_t len1, len2, len3;
5686 char *name;
5687 const char *stub;
5688 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
5689
5690 if (bfd_link_pic (info))
5691 stub = ".plt_pic32.";
5692 else
5693 stub = ".plt_call32.";
5694
5695 len1 = strlen (h->root.root.string);
5696 len2 = strlen (stub);
5697 len3 = 0;
5698 if (ent->sec)
5699 len3 = strlen (ent->sec->name);
5700 name = bfd_malloc (len1 + len2 + len3 + 9);
5701 if (name == NULL)
5702 return FALSE;
5703 sprintf (name, "%08x", (unsigned) ent->addend & 0xffffffff);
5704 if (ent->sec)
5705 memcpy (name + 8, ent->sec->name, len3);
5706 memcpy (name + 8 + len3, stub, len2);
5707 memcpy (name + 8 + len3 + len2, h->root.root.string, len1 + 1);
5708 sh = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
5709 if (sh == NULL)
5710 return FALSE;
5711 if (sh->root.type == bfd_link_hash_new)
5712 {
5713 sh->root.type = bfd_link_hash_defined;
5714 sh->root.u.def.section = htab->glink;
5715 sh->root.u.def.value = ent->glink_offset;
5716 sh->ref_regular = 1;
5717 sh->def_regular = 1;
5718 sh->ref_regular_nonweak = 1;
5719 sh->forced_local = 1;
5720 sh->non_elf = 0;
5721 sh->root.linker_def = 1;
5722 }
5723 return TRUE;
5724 }
5725
5726 /* Allocate NEED contiguous space in .got, and return the offset.
5727 Handles allocation of the got header when crossing 32k. */
5728
5729 static bfd_vma
5730 allocate_got (struct ppc_elf_link_hash_table *htab, unsigned int need)
5731 {
5732 bfd_vma where;
5733 unsigned int max_before_header;
5734
5735 if (htab->plt_type == PLT_VXWORKS)
5736 {
5737 where = htab->elf.sgot->size;
5738 htab->elf.sgot->size += need;
5739 }
5740 else
5741 {
5742 max_before_header = htab->plt_type == PLT_NEW ? 32768 : 32764;
5743 if (need <= htab->got_gap)
5744 {
5745 where = max_before_header - htab->got_gap;
5746 htab->got_gap -= need;
5747 }
5748 else
5749 {
5750 if (htab->elf.sgot->size + need > max_before_header
5751 && htab->elf.sgot->size <= max_before_header)
5752 {
5753 htab->got_gap = max_before_header - htab->elf.sgot->size;
5754 htab->elf.sgot->size = max_before_header + htab->got_header_size;
5755 }
5756 where = htab->elf.sgot->size;
5757 htab->elf.sgot->size += need;
5758 }
5759 }
5760 return where;
5761 }
5762
5763 /* If H is undefined, make it dynamic if that makes sense. */
5764
5765 static bfd_boolean
5766 ensure_undef_dynamic (struct bfd_link_info *info,
5767 struct elf_link_hash_entry *h)
5768 {
5769 struct elf_link_hash_table *htab = elf_hash_table (info);
5770
5771 if (htab->dynamic_sections_created
5772 && ((info->dynamic_undefined_weak != 0
5773 && h->root.type == bfd_link_hash_undefweak)
5774 || h->root.type == bfd_link_hash_undefined)
5775 && h->dynindx == -1
5776 && !h->forced_local
5777 && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
5778 return bfd_elf_link_record_dynamic_symbol (info, h);
5779 return TRUE;
5780 }
5781
5782 /* Allocate space in associated reloc sections for dynamic relocs. */
5783
5784 static bfd_boolean
5785 allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
5786 {
5787 struct bfd_link_info *info = inf;
5788 struct ppc_elf_link_hash_entry *eh;
5789 struct ppc_elf_link_hash_table *htab;
5790 struct elf_dyn_relocs *p;
5791 bfd_boolean dyn;
5792
5793 if (h->root.type == bfd_link_hash_indirect)
5794 return TRUE;
5795
5796 htab = ppc_elf_hash_table (info);
5797 eh = (struct ppc_elf_link_hash_entry *) h;
5798 if (eh->elf.got.refcount > 0
5799 || (ELIMINATE_COPY_RELOCS
5800 && !eh->elf.def_regular
5801 && eh->elf.protected_def
5802 && eh->has_addr16_ha
5803 && eh->has_addr16_lo
5804 && htab->params->pic_fixup > 0))
5805 {
5806 unsigned int need;
5807
5808 /* Make sure this symbol is output as a dynamic symbol. */
5809 if (!ensure_undef_dynamic (info, &eh->elf))
5810 return FALSE;
5811
5812 need = 0;
5813 if ((eh->tls_mask & TLS_TLS) != 0)
5814 {
5815 if ((eh->tls_mask & TLS_LD) != 0)
5816 {
5817 if (!eh->elf.def_dynamic)
5818 /* We'll just use htab->tlsld_got.offset. This should
5819 always be the case. It's a little odd if we have
5820 a local dynamic reloc against a non-local symbol. */
5821 htab->tlsld_got.refcount += 1;
5822 else
5823 need += 8;
5824 }
5825 if ((eh->tls_mask & TLS_GD) != 0)
5826 need += 8;
5827 if ((eh->tls_mask & (TLS_TPREL | TLS_TPRELGD)) != 0)
5828 need += 4;
5829 if ((eh->tls_mask & TLS_DTPREL) != 0)
5830 need += 4;
5831 }
5832 else
5833 need += 4;
5834 if (need == 0)
5835 eh->elf.got.offset = (bfd_vma) -1;
5836 else
5837 {
5838 eh->elf.got.offset = allocate_got (htab, need);
5839 if ((bfd_link_pic (info)
5840 || (htab->elf.dynamic_sections_created
5841 && eh->elf.dynindx != -1
5842 && !SYMBOL_REFERENCES_LOCAL (info, &eh->elf)))
5843 && !UNDEFWEAK_NO_DYNAMIC_RELOC (info, &eh->elf))
5844 {
5845 asection *rsec = htab->elf.srelgot;
5846
5847 if (eh->elf.type == STT_GNU_IFUNC)
5848 rsec = htab->elf.irelplt;
5849 /* All the entries we allocated need relocs.
5850 Except LD only needs one. */
5851 if ((eh->tls_mask & TLS_LD) != 0
5852 && eh->elf.def_dynamic)
5853 need -= 4;
5854 rsec->size += need * (sizeof (Elf32_External_Rela) / 4);
5855 }
5856 }
5857 }
5858 else
5859 eh->elf.got.offset = (bfd_vma) -1;
5860
5861 /* If no dynamic sections we can't have dynamic relocs, except for
5862 IFUNCs which are handled even in static executables. */
5863 if (!htab->elf.dynamic_sections_created
5864 && h->type != STT_GNU_IFUNC)
5865 eh->dyn_relocs = NULL;
5866
5867 if (eh->dyn_relocs == NULL)
5868 ;
5869
5870 /* In the shared -Bsymbolic case, discard space allocated for
5871 dynamic pc-relative relocs against symbols which turn out to be
5872 defined in regular objects. For the normal shared case, discard
5873 space for relocs that have become local due to symbol visibility
5874 changes. */
5875 else if (bfd_link_pic (info))
5876 {
5877 /* Discard relocs on undefined symbols that must be local. */
5878 if (h->root.type == bfd_link_hash_undefined
5879 && ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
5880 eh->dyn_relocs = NULL;
5881
5882 /* Also discard relocs on undefined weak syms with non-default
5883 visibility, or when dynamic_undefined_weak says so. */
5884 else if (UNDEFWEAK_NO_DYNAMIC_RELOC (info, h))
5885 eh->dyn_relocs = NULL;
5886
5887 /* Relocs that use pc_count are those that appear on a call insn,
5888 or certain REL relocs (see must_be_dyn_reloc) that can be
5889 generated via assembly. We want calls to protected symbols to
5890 resolve directly to the function rather than going via the plt.
5891 If people want function pointer comparisons to work as expected
5892 then they should avoid writing weird assembly. */
5893 else if (SYMBOL_CALLS_LOCAL (info, h))
5894 {
5895 struct elf_dyn_relocs **pp;
5896
5897 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
5898 {
5899 p->count -= p->pc_count;
5900 p->pc_count = 0;
5901 if (p->count == 0)
5902 *pp = p->next;
5903 else
5904 pp = &p->next;
5905 }
5906 }
5907
5908 if (htab->is_vxworks)
5909 {
5910 struct elf_dyn_relocs **pp;
5911
5912 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
5913 {
5914 if (strcmp (p->sec->output_section->name, ".tls_vars") == 0)
5915 *pp = p->next;
5916 else
5917 pp = &p->next;
5918 }
5919 }
5920
5921 if (eh->dyn_relocs != NULL)
5922 {
5923 /* Make sure this symbol is output as a dynamic symbol. */
5924 if (!ensure_undef_dynamic (info, h))
5925 return FALSE;
5926 }
5927 }
5928 else if (ELIMINATE_COPY_RELOCS)
5929 {
5930 /* For the non-pic case, discard space for relocs against
5931 symbols which turn out to need copy relocs or are not
5932 dynamic. */
5933 if (!h->non_got_ref
5934 && !h->def_regular
5935 && !(h->protected_def
5936 && eh->has_addr16_ha
5937 && eh->has_addr16_lo
5938 && htab->params->pic_fixup > 0))
5939 {
5940 /* Make sure this symbol is output as a dynamic symbol. */
5941 if (!ensure_undef_dynamic (info, h))
5942 return FALSE;
5943
5944 if (h->dynindx == -1)
5945 eh->dyn_relocs = NULL;
5946 }
5947 else
5948 eh->dyn_relocs = NULL;
5949 }
5950
5951 /* Allocate space. */
5952 for (p = eh->dyn_relocs; p != NULL; p = p->next)
5953 {
5954 asection *sreloc = elf_section_data (p->sec)->sreloc;
5955 if (eh->elf.type == STT_GNU_IFUNC)
5956 sreloc = htab->elf.irelplt;
5957 sreloc->size += p->count * sizeof (Elf32_External_Rela);
5958 }
5959
5960 /* Handle PLT relocs. Done last, after dynindx has settled. */
5961 dyn = htab->elf.dynamic_sections_created && h->dynindx != -1;
5962 if (dyn || h->type == STT_GNU_IFUNC)
5963 {
5964 struct plt_entry *ent;
5965 bfd_boolean doneone = FALSE;
5966 bfd_vma plt_offset = 0, glink_offset = 0;
5967
5968 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
5969 if (ent->plt.refcount > 0)
5970 {
5971 asection *s = htab->elf.splt;
5972
5973 if (!dyn)
5974 s = htab->elf.iplt;
5975
5976 if (htab->plt_type == PLT_NEW || !dyn)
5977 {
5978 if (!doneone)
5979 {
5980 plt_offset = s->size;
5981 s->size += 4;
5982 }
5983 ent->plt.offset = plt_offset;
5984
5985 s = htab->glink;
5986 if (!doneone || bfd_link_pic (info))
5987 {
5988 glink_offset = s->size;
5989 s->size += GLINK_ENTRY_SIZE;
5990 if (h == htab->tls_get_addr
5991 && !htab->params->no_tls_get_addr_opt)
5992 s->size += TLS_GET_ADDR_GLINK_SIZE - GLINK_ENTRY_SIZE;
5993 }
5994 if (!doneone
5995 && !bfd_link_pic (info)
5996 && h->def_dynamic
5997 && !h->def_regular)
5998 {
5999 h->root.u.def.section = s;
6000 h->root.u.def.value = glink_offset;
6001 }
6002 ent->glink_offset = glink_offset;
6003
6004 if (htab->params->emit_stub_syms
6005 && !add_stub_sym (ent, h, info))
6006 return FALSE;
6007 }
6008 else
6009 {
6010 if (!doneone)
6011 {
6012 /* If this is the first .plt entry, make room
6013 for the special first entry. */
6014 if (s->size == 0)
6015 s->size += htab->plt_initial_entry_size;
6016
6017 /* The PowerPC PLT is actually composed of two
6018 parts, the first part is 2 words (for a load
6019 and a jump), and then there is a remaining
6020 word available at the end. */
6021 plt_offset = (htab->plt_initial_entry_size
6022 + (htab->plt_slot_size
6023 * ((s->size
6024 - htab->plt_initial_entry_size)
6025 / htab->plt_entry_size)));
6026
6027 /* If this symbol is not defined in a regular
6028 file, and we are not generating a shared
6029 library, then set the symbol to this location
6030 in the .plt. This is to avoid text
6031 relocations, and is required to make
6032 function pointers compare as equal between
6033 the normal executable and the shared library. */
6034 if (! bfd_link_pic (info)
6035 && h->def_dynamic
6036 && !h->def_regular)
6037 {
6038 h->root.u.def.section = s;
6039 h->root.u.def.value = plt_offset;
6040 }
6041
6042 /* Make room for this entry. */
6043 s->size += htab->plt_entry_size;
6044 /* After the 8192nd entry, room for two entries
6045 is allocated. */
6046 if (htab->plt_type == PLT_OLD
6047 && (s->size - htab->plt_initial_entry_size)
6048 / htab->plt_entry_size
6049 > PLT_NUM_SINGLE_ENTRIES)
6050 s->size += htab->plt_entry_size;
6051 }
6052 ent->plt.offset = plt_offset;
6053 }
6054
6055 /* We also need to make an entry in the .rela.plt section. */
6056 if (!doneone)
6057 {
6058 if (!dyn)
6059 htab->elf.irelplt->size += sizeof (Elf32_External_Rela);
6060 else
6061 {
6062 htab->elf.srelplt->size += sizeof (Elf32_External_Rela);
6063
6064 if (htab->plt_type == PLT_VXWORKS)
6065 {
6066 /* Allocate space for the unloaded relocations. */
6067 if (!bfd_link_pic (info)
6068 && htab->elf.dynamic_sections_created)
6069 {
6070 if (ent->plt.offset
6071 == (bfd_vma) htab->plt_initial_entry_size)
6072 {
6073 htab->srelplt2->size
6074 += (sizeof (Elf32_External_Rela)
6075 * VXWORKS_PLTRESOLVE_RELOCS);
6076 }
6077
6078 htab->srelplt2->size
6079 += (sizeof (Elf32_External_Rela)
6080 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS);
6081 }
6082
6083 /* Every PLT entry has an associated GOT entry in
6084 .got.plt. */
6085 htab->elf.sgotplt->size += 4;
6086 }
6087 }
6088 doneone = TRUE;
6089 }
6090 }
6091 else
6092 ent->plt.offset = (bfd_vma) -1;
6093
6094 if (!doneone)
6095 {
6096 h->plt.plist = NULL;
6097 h->needs_plt = 0;
6098 }
6099 }
6100 else
6101 {
6102 h->plt.plist = NULL;
6103 h->needs_plt = 0;
6104 }
6105
6106 return TRUE;
6107 }
6108
6109 /* Set DF_TEXTREL if we find any dynamic relocs that apply to
6110 read-only sections. */
6111
6112 static bfd_boolean
6113 maybe_set_textrel (struct elf_link_hash_entry *h, void *info_p)
6114 {
6115 struct bfd_link_info *info;
6116
6117 if (h->root.type == bfd_link_hash_indirect)
6118 return TRUE;
6119
6120 info = (struct bfd_link_info *) info_p;
6121 if (readonly_dynrelocs (h, info))
6122 {
6123 info->flags |= DF_TEXTREL;
6124
6125 /* Not an error, just cut short the traversal. */
6126 return FALSE;
6127 }
6128 return TRUE;
6129 }
6130
6131 static const unsigned char glink_eh_frame_cie[] =
6132 {
6133 0, 0, 0, 16, /* length. */
6134 0, 0, 0, 0, /* id. */
6135 1, /* CIE version. */
6136 'z', 'R', 0, /* Augmentation string. */
6137 4, /* Code alignment. */
6138 0x7c, /* Data alignment. */
6139 65, /* RA reg. */
6140 1, /* Augmentation size. */
6141 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding. */
6142 DW_CFA_def_cfa, 1, 0 /* def_cfa: r1 offset 0. */
6143 };
6144
6145 /* Set the sizes of the dynamic sections. */
6146
6147 static bfd_boolean
6148 ppc_elf_size_dynamic_sections (bfd *output_bfd,
6149 struct bfd_link_info *info)
6150 {
6151 struct ppc_elf_link_hash_table *htab;
6152 asection *s;
6153 bfd_boolean relocs;
6154 bfd *ibfd;
6155
6156 #ifdef DEBUG
6157 fprintf (stderr, "ppc_elf_size_dynamic_sections called\n");
6158 #endif
6159
6160 htab = ppc_elf_hash_table (info);
6161 BFD_ASSERT (htab->elf.dynobj != NULL);
6162
6163 if (elf_hash_table (info)->dynamic_sections_created)
6164 {
6165 /* Set the contents of the .interp section to the interpreter. */
6166 if (bfd_link_executable (info) && !info->nointerp)
6167 {
6168 s = bfd_get_linker_section (htab->elf.dynobj, ".interp");
6169 BFD_ASSERT (s != NULL);
6170 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
6171 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
6172 }
6173 }
6174
6175 if (htab->plt_type == PLT_OLD)
6176 htab->got_header_size = 16;
6177 else if (htab->plt_type == PLT_NEW)
6178 htab->got_header_size = 12;
6179
6180 /* Set up .got offsets for local syms, and space for local dynamic
6181 relocs. */
6182 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
6183 {
6184 bfd_signed_vma *local_got;
6185 bfd_signed_vma *end_local_got;
6186 struct plt_entry **local_plt;
6187 struct plt_entry **end_local_plt;
6188 char *lgot_masks;
6189 bfd_size_type locsymcount;
6190 Elf_Internal_Shdr *symtab_hdr;
6191
6192 if (!is_ppc_elf (ibfd))
6193 continue;
6194
6195 for (s = ibfd->sections; s != NULL; s = s->next)
6196 {
6197 struct ppc_dyn_relocs *p;
6198
6199 for (p = ((struct ppc_dyn_relocs *)
6200 elf_section_data (s)->local_dynrel);
6201 p != NULL;
6202 p = p->next)
6203 {
6204 if (!bfd_is_abs_section (p->sec)
6205 && bfd_is_abs_section (p->sec->output_section))
6206 {
6207 /* Input section has been discarded, either because
6208 it is a copy of a linkonce section or due to
6209 linker script /DISCARD/, so we'll be discarding
6210 the relocs too. */
6211 }
6212 else if (htab->is_vxworks
6213 && strcmp (p->sec->output_section->name,
6214 ".tls_vars") == 0)
6215 {
6216 /* Relocations in vxworks .tls_vars sections are
6217 handled specially by the loader. */
6218 }
6219 else if (p->count != 0)
6220 {
6221 asection *sreloc = elf_section_data (p->sec)->sreloc;
6222 if (p->ifunc)
6223 sreloc = htab->elf.irelplt;
6224 sreloc->size += p->count * sizeof (Elf32_External_Rela);
6225 if ((p->sec->output_section->flags
6226 & (SEC_READONLY | SEC_ALLOC))
6227 == (SEC_READONLY | SEC_ALLOC))
6228 {
6229 info->flags |= DF_TEXTREL;
6230 info->callbacks->minfo (_("%B: dynamic relocation in read-only section `%A'\n"),
6231 p->sec->owner, p->sec);
6232 }
6233 }
6234 }
6235 }
6236
6237 local_got = elf_local_got_refcounts (ibfd);
6238 if (!local_got)
6239 continue;
6240
6241 symtab_hdr = &elf_symtab_hdr (ibfd);
6242 locsymcount = symtab_hdr->sh_info;
6243 end_local_got = local_got + locsymcount;
6244 local_plt = (struct plt_entry **) end_local_got;
6245 end_local_plt = local_plt + locsymcount;
6246 lgot_masks = (char *) end_local_plt;
6247
6248 for (; local_got < end_local_got; ++local_got, ++lgot_masks)
6249 if (*local_got > 0)
6250 {
6251 unsigned int need = 0;
6252 if ((*lgot_masks & TLS_TLS) != 0)
6253 {
6254 if ((*lgot_masks & TLS_GD) != 0)
6255 need += 8;
6256 if ((*lgot_masks & TLS_LD) != 0)
6257 htab->tlsld_got.refcount += 1;
6258 if ((*lgot_masks & (TLS_TPREL | TLS_TPRELGD)) != 0)
6259 need += 4;
6260 if ((*lgot_masks & TLS_DTPREL) != 0)
6261 need += 4;
6262 }
6263 else
6264 need += 4;
6265 if (need == 0)
6266 *local_got = (bfd_vma) -1;
6267 else
6268 {
6269 *local_got = allocate_got (htab, need);
6270 if (bfd_link_pic (info))
6271 {
6272 asection *srel = htab->elf.srelgot;
6273 if ((*lgot_masks & PLT_IFUNC) != 0)
6274 srel = htab->elf.irelplt;
6275 srel->size += need * (sizeof (Elf32_External_Rela) / 4);
6276 }
6277 }
6278 }
6279 else
6280 *local_got = (bfd_vma) -1;
6281
6282 if (htab->is_vxworks)
6283 continue;
6284
6285 /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */
6286 for (; local_plt < end_local_plt; ++local_plt)
6287 {
6288 struct plt_entry *ent;
6289 bfd_boolean doneone = FALSE;
6290 bfd_vma plt_offset = 0, glink_offset = 0;
6291
6292 for (ent = *local_plt; ent != NULL; ent = ent->next)
6293 if (ent->plt.refcount > 0)
6294 {
6295 s = htab->elf.iplt;
6296
6297 if (!doneone)
6298 {
6299 plt_offset = s->size;
6300 s->size += 4;
6301 }
6302 ent->plt.offset = plt_offset;
6303
6304 s = htab->glink;
6305 if (!doneone || bfd_link_pic (info))
6306 {
6307 glink_offset = s->size;
6308 s->size += GLINK_ENTRY_SIZE;
6309 }
6310 ent->glink_offset = glink_offset;
6311
6312 if (!doneone)
6313 {
6314 htab->elf.irelplt->size += sizeof (Elf32_External_Rela);
6315 doneone = TRUE;
6316 }
6317 }
6318 else
6319 ent->plt.offset = (bfd_vma) -1;
6320 }
6321 }
6322
6323 /* Allocate space for global sym dynamic relocs. */
6324 elf_link_hash_traverse (elf_hash_table (info), allocate_dynrelocs, info);
6325
6326 if (htab->tlsld_got.refcount > 0)
6327 {
6328 htab->tlsld_got.offset = allocate_got (htab, 8);
6329 if (bfd_link_pic (info))
6330 htab->elf.srelgot->size += sizeof (Elf32_External_Rela);
6331 }
6332 else
6333 htab->tlsld_got.offset = (bfd_vma) -1;
6334
6335 if (htab->elf.sgot != NULL && htab->plt_type != PLT_VXWORKS)
6336 {
6337 unsigned int g_o_t = 32768;
6338
6339 /* If we haven't allocated the header, do so now. When we get here,
6340 for old plt/got the got size will be 0 to 32764 (not allocated),
6341 or 32780 to 65536 (header allocated). For new plt/got, the
6342 corresponding ranges are 0 to 32768 and 32780 to 65536. */
6343 if (htab->elf.sgot->size <= 32768)
6344 {
6345 g_o_t = htab->elf.sgot->size;
6346 if (htab->plt_type == PLT_OLD)
6347 g_o_t += 4;
6348 htab->elf.sgot->size += htab->got_header_size;
6349 }
6350
6351 htab->elf.hgot->root.u.def.value = g_o_t;
6352 }
6353 if (bfd_link_pic (info))
6354 {
6355 struct elf_link_hash_entry *sda = htab->sdata[0].sym;
6356
6357 sda->root.u.def.section = htab->elf.hgot->root.u.def.section;
6358 sda->root.u.def.value = htab->elf.hgot->root.u.def.value;
6359 }
6360 if (info->emitrelocations)
6361 {
6362 struct elf_link_hash_entry *sda = htab->sdata[0].sym;
6363
6364 if (sda != NULL && sda->ref_regular)
6365 sda->root.u.def.section->flags |= SEC_KEEP;
6366 sda = htab->sdata[1].sym;
6367 if (sda != NULL && sda->ref_regular)
6368 sda->root.u.def.section->flags |= SEC_KEEP;
6369 }
6370
6371 if (htab->glink != NULL
6372 && htab->glink->size != 0
6373 && htab->elf.dynamic_sections_created)
6374 {
6375 htab->glink_pltresolve = htab->glink->size;
6376 /* Space for the branch table. ??? We don't need entries for
6377 non-dynamic symbols in this table. This case can arise with
6378 static ifuncs or forced local ifuncs. */
6379 htab->glink->size += htab->glink->size / (GLINK_ENTRY_SIZE / 4) - 4;
6380 /* Pad out to align the start of PLTresolve. */
6381 htab->glink->size += -htab->glink->size & (htab->params->ppc476_workaround
6382 ? 63 : 15);
6383 htab->glink->size += GLINK_PLTRESOLVE;
6384
6385 if (htab->params->emit_stub_syms)
6386 {
6387 struct elf_link_hash_entry *sh;
6388 sh = elf_link_hash_lookup (&htab->elf, "__glink",
6389 TRUE, FALSE, FALSE);
6390 if (sh == NULL)
6391 return FALSE;
6392 if (sh->root.type == bfd_link_hash_new)
6393 {
6394 sh->root.type = bfd_link_hash_defined;
6395 sh->root.u.def.section = htab->glink;
6396 sh->root.u.def.value = htab->glink_pltresolve;
6397 sh->ref_regular = 1;
6398 sh->def_regular = 1;
6399 sh->ref_regular_nonweak = 1;
6400 sh->forced_local = 1;
6401 sh->non_elf = 0;
6402 sh->root.linker_def = 1;
6403 }
6404 sh = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve",
6405 TRUE, FALSE, FALSE);
6406 if (sh == NULL)
6407 return FALSE;
6408 if (sh->root.type == bfd_link_hash_new)
6409 {
6410 sh->root.type = bfd_link_hash_defined;
6411 sh->root.u.def.section = htab->glink;
6412 sh->root.u.def.value = htab->glink->size - GLINK_PLTRESOLVE;
6413 sh->ref_regular = 1;
6414 sh->def_regular = 1;
6415 sh->ref_regular_nonweak = 1;
6416 sh->forced_local = 1;
6417 sh->non_elf = 0;
6418 sh->root.linker_def = 1;
6419 }
6420 }
6421 }
6422
6423 if (htab->glink != NULL
6424 && htab->glink->size != 0
6425 && htab->glink_eh_frame != NULL
6426 && !bfd_is_abs_section (htab->glink_eh_frame->output_section)
6427 && _bfd_elf_eh_frame_present (info))
6428 {
6429 s = htab->glink_eh_frame;
6430 s->size = sizeof (glink_eh_frame_cie) + 20;
6431 if (bfd_link_pic (info))
6432 {
6433 s->size += 4;
6434 if (htab->glink->size - GLINK_PLTRESOLVE + 8 >= 256)
6435 s->size += 4;
6436 }
6437 }
6438
6439 /* We've now determined the sizes of the various dynamic sections.
6440 Allocate memory for them. */
6441 relocs = FALSE;
6442 for (s = htab->elf.dynobj->sections; s != NULL; s = s->next)
6443 {
6444 bfd_boolean strip_section = TRUE;
6445
6446 if ((s->flags & SEC_LINKER_CREATED) == 0)
6447 continue;
6448
6449 if (s == htab->elf.splt
6450 || s == htab->elf.sgot)
6451 {
6452 /* We'd like to strip these sections if they aren't needed, but if
6453 we've exported dynamic symbols from them we must leave them.
6454 It's too late to tell BFD to get rid of the symbols. */
6455 if (htab->elf.hplt != NULL)
6456 strip_section = FALSE;
6457 /* Strip this section if we don't need it; see the
6458 comment below. */
6459 }
6460 else if (s == htab->elf.iplt
6461 || s == htab->glink
6462 || s == htab->glink_eh_frame
6463 || s == htab->elf.sgotplt
6464 || s == htab->sbss
6465 || s == htab->elf.sdynbss
6466 || s == htab->elf.sdynrelro
6467 || s == htab->dynsbss)
6468 {
6469 /* Strip these too. */
6470 }
6471 else if (s == htab->sdata[0].section
6472 || s == htab->sdata[1].section)
6473 {
6474 strip_section = (s->flags & SEC_KEEP) == 0;
6475 }
6476 else if (CONST_STRNEQ (bfd_get_section_name (htab->elf.dynobj, s),
6477 ".rela"))
6478 {
6479 if (s->size != 0)
6480 {
6481 /* Remember whether there are any relocation sections. */
6482 relocs = TRUE;
6483
6484 /* We use the reloc_count field as a counter if we need
6485 to copy relocs into the output file. */
6486 s->reloc_count = 0;
6487 }
6488 }
6489 else
6490 {
6491 /* It's not one of our sections, so don't allocate space. */
6492 continue;
6493 }
6494
6495 if (s->size == 0 && strip_section)
6496 {
6497 /* If we don't need this section, strip it from the
6498 output file. This is mostly to handle .rela.bss and
6499 .rela.plt. We must create both sections in
6500 create_dynamic_sections, because they must be created
6501 before the linker maps input sections to output
6502 sections. The linker does that before
6503 adjust_dynamic_symbol is called, and it is that
6504 function which decides whether anything needs to go
6505 into these sections. */
6506 s->flags |= SEC_EXCLUDE;
6507 continue;
6508 }
6509
6510 if ((s->flags & SEC_HAS_CONTENTS) == 0)
6511 continue;
6512
6513 /* Allocate memory for the section contents. */
6514 s->contents = bfd_zalloc (htab->elf.dynobj, s->size);
6515 if (s->contents == NULL)
6516 return FALSE;
6517 }
6518
6519 if (htab->elf.dynamic_sections_created)
6520 {
6521 /* Add some entries to the .dynamic section. We fill in the
6522 values later, in ppc_elf_finish_dynamic_sections, but we
6523 must add the entries now so that we get the correct size for
6524 the .dynamic section. The DT_DEBUG entry is filled in by the
6525 dynamic linker and used by the debugger. */
6526 #define add_dynamic_entry(TAG, VAL) \
6527 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
6528
6529 if (bfd_link_executable (info))
6530 {
6531 if (!add_dynamic_entry (DT_DEBUG, 0))
6532 return FALSE;
6533 }
6534
6535 if (htab->elf.splt != NULL && htab->elf.splt->size != 0)
6536 {
6537 if (!add_dynamic_entry (DT_PLTGOT, 0)
6538 || !add_dynamic_entry (DT_PLTRELSZ, 0)
6539 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
6540 || !add_dynamic_entry (DT_JMPREL, 0))
6541 return FALSE;
6542 }
6543
6544 if (htab->plt_type == PLT_NEW
6545 && htab->glink != NULL
6546 && htab->glink->size != 0)
6547 {
6548 if (!add_dynamic_entry (DT_PPC_GOT, 0))
6549 return FALSE;
6550 if (!htab->params->no_tls_get_addr_opt
6551 && htab->tls_get_addr != NULL
6552 && htab->tls_get_addr->plt.plist != NULL
6553 && !add_dynamic_entry (DT_PPC_OPT, PPC_OPT_TLS))
6554 return FALSE;
6555 }
6556
6557 if (relocs)
6558 {
6559 if (!add_dynamic_entry (DT_RELA, 0)
6560 || !add_dynamic_entry (DT_RELASZ, 0)
6561 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
6562 return FALSE;
6563 }
6564
6565 /* If any dynamic relocs apply to a read-only section, then we
6566 need a DT_TEXTREL entry. */
6567 if ((info->flags & DF_TEXTREL) == 0)
6568 elf_link_hash_traverse (elf_hash_table (info), maybe_set_textrel,
6569 info);
6570
6571 if ((info->flags & DF_TEXTREL) != 0)
6572 {
6573 if (!add_dynamic_entry (DT_TEXTREL, 0))
6574 return FALSE;
6575 }
6576 if (htab->is_vxworks
6577 && !elf_vxworks_add_dynamic_entries (output_bfd, info))
6578 return FALSE;
6579 }
6580 #undef add_dynamic_entry
6581
6582 if (htab->glink_eh_frame != NULL
6583 && htab->glink_eh_frame->contents != NULL)
6584 {
6585 unsigned char *p = htab->glink_eh_frame->contents;
6586 bfd_vma val;
6587
6588 memcpy (p, glink_eh_frame_cie, sizeof (glink_eh_frame_cie));
6589 /* CIE length (rewrite in case little-endian). */
6590 bfd_put_32 (htab->elf.dynobj, sizeof (glink_eh_frame_cie) - 4, p);
6591 p += sizeof (glink_eh_frame_cie);
6592 /* FDE length. */
6593 val = htab->glink_eh_frame->size - 4 - sizeof (glink_eh_frame_cie);
6594 bfd_put_32 (htab->elf.dynobj, val, p);
6595 p += 4;
6596 /* CIE pointer. */
6597 val = p - htab->glink_eh_frame->contents;
6598 bfd_put_32 (htab->elf.dynobj, val, p);
6599 p += 4;
6600 /* Offset to .glink. Set later. */
6601 p += 4;
6602 /* .glink size. */
6603 bfd_put_32 (htab->elf.dynobj, htab->glink->size, p);
6604 p += 4;
6605 /* Augmentation. */
6606 p += 1;
6607
6608 if (bfd_link_pic (info)
6609 && htab->elf.dynamic_sections_created)
6610 {
6611 bfd_vma adv = (htab->glink->size - GLINK_PLTRESOLVE + 8) >> 2;
6612 if (adv < 64)
6613 *p++ = DW_CFA_advance_loc + adv;
6614 else if (adv < 256)
6615 {
6616 *p++ = DW_CFA_advance_loc1;
6617 *p++ = adv;
6618 }
6619 else if (adv < 65536)
6620 {
6621 *p++ = DW_CFA_advance_loc2;
6622 bfd_put_16 (htab->elf.dynobj, adv, p);
6623 p += 2;
6624 }
6625 else
6626 {
6627 *p++ = DW_CFA_advance_loc4;
6628 bfd_put_32 (htab->elf.dynobj, adv, p);
6629 p += 4;
6630 }
6631 *p++ = DW_CFA_register;
6632 *p++ = 65;
6633 p++;
6634 *p++ = DW_CFA_advance_loc + 4;
6635 *p++ = DW_CFA_restore_extended;
6636 *p++ = 65;
6637 }
6638 BFD_ASSERT ((bfd_vma) ((p + 3 - htab->glink_eh_frame->contents) & -4)
6639 == htab->glink_eh_frame->size);
6640 }
6641
6642 return TRUE;
6643 }
6644
6645 /* Arrange to have _SDA_BASE_ or _SDA2_BASE_ stripped from the output
6646 if it looks like nothing is using them. */
6647
6648 static void
6649 maybe_strip_sdasym (bfd *output_bfd, elf_linker_section_t *lsect)
6650 {
6651 struct elf_link_hash_entry *sda = lsect->sym;
6652
6653 if (sda != NULL && !sda->ref_regular && sda->dynindx == -1)
6654 {
6655 asection *s;
6656
6657 s = bfd_get_section_by_name (output_bfd, lsect->name);
6658 if (s == NULL || bfd_section_removed_from_list (output_bfd, s))
6659 {
6660 s = bfd_get_section_by_name (output_bfd, lsect->bss_name);
6661 if (s == NULL || bfd_section_removed_from_list (output_bfd, s))
6662 {
6663 sda->def_regular = 0;
6664 /* This is somewhat magic. See elf_link_output_extsym. */
6665 sda->ref_dynamic = 1;
6666 sda->forced_local = 0;
6667 }
6668 }
6669 }
6670 }
6671
6672 void
6673 ppc_elf_maybe_strip_sdata_syms (struct bfd_link_info *info)
6674 {
6675 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
6676
6677 if (htab != NULL)
6678 {
6679 maybe_strip_sdasym (info->output_bfd, &htab->sdata[0]);
6680 maybe_strip_sdasym (info->output_bfd, &htab->sdata[1]);
6681 }
6682 }
6683
6684
6685 /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
6686
6687 static bfd_boolean
6688 ppc_elf_hash_symbol (struct elf_link_hash_entry *h)
6689 {
6690 if (h->plt.plist != NULL
6691 && !h->def_regular
6692 && (!h->pointer_equality_needed
6693 || !h->ref_regular_nonweak))
6694 return FALSE;
6695
6696 return _bfd_elf_hash_symbol (h);
6697 }
6698 \f
6699 #define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0]))
6700
6701 /* Relaxation trampolines. r12 is available for clobbering (r11, is
6702 used for some functions that are allowed to break the ABI). */
6703 static const int shared_stub_entry[] =
6704 {
6705 0x7c0802a6, /* mflr 0 */
6706 0x429f0005, /* bcl 20, 31, .Lxxx */
6707 0x7d8802a6, /* mflr 12 */
6708 0x3d8c0000, /* addis 12, 12, (xxx-.Lxxx)@ha */
6709 0x398c0000, /* addi 12, 12, (xxx-.Lxxx)@l */
6710 0x7c0803a6, /* mtlr 0 */
6711 0x7d8903a6, /* mtctr 12 */
6712 0x4e800420, /* bctr */
6713 };
6714
6715 static const int stub_entry[] =
6716 {
6717 0x3d800000, /* lis 12,xxx@ha */
6718 0x398c0000, /* addi 12,12,xxx@l */
6719 0x7d8903a6, /* mtctr 12 */
6720 0x4e800420, /* bctr */
6721 };
6722
6723 struct ppc_elf_relax_info
6724 {
6725 unsigned int workaround_size;
6726 unsigned int picfixup_size;
6727 };
6728
6729 /* This function implements long branch trampolines, and the ppc476
6730 icache bug workaround. Any section needing trampolines or patch
6731 space for the workaround has its size extended so that we can
6732 add trampolines at the end of the section. */
6733
6734 static bfd_boolean
6735 ppc_elf_relax_section (bfd *abfd,
6736 asection *isec,
6737 struct bfd_link_info *link_info,
6738 bfd_boolean *again)
6739 {
6740 struct one_branch_fixup
6741 {
6742 struct one_branch_fixup *next;
6743 asection *tsec;
6744 /* Final link, can use the symbol offset. For a
6745 relocatable link we use the symbol's index. */
6746 bfd_vma toff;
6747 bfd_vma trampoff;
6748 };
6749
6750 Elf_Internal_Shdr *symtab_hdr;
6751 bfd_byte *contents = NULL;
6752 Elf_Internal_Sym *isymbuf = NULL;
6753 Elf_Internal_Rela *internal_relocs = NULL;
6754 Elf_Internal_Rela *irel, *irelend = NULL;
6755 struct one_branch_fixup *branch_fixups = NULL;
6756 struct ppc_elf_relax_info *relax_info = NULL;
6757 unsigned changes = 0;
6758 bfd_boolean workaround_change;
6759 struct ppc_elf_link_hash_table *htab;
6760 bfd_size_type trampbase, trampoff, newsize, picfixup_size;
6761 asection *got2;
6762 bfd_boolean maybe_pasted;
6763
6764 *again = FALSE;
6765
6766 /* No need to do anything with non-alloc or non-code sections. */
6767 if ((isec->flags & SEC_ALLOC) == 0
6768 || (isec->flags & SEC_CODE) == 0
6769 || (isec->flags & SEC_LINKER_CREATED) != 0
6770 || isec->size < 4)
6771 return TRUE;
6772
6773 /* We cannot represent the required PIC relocs in the output, so don't
6774 do anything. The linker doesn't support mixing -shared and -r
6775 anyway. */
6776 if (bfd_link_relocatable (link_info) && bfd_link_pic (link_info))
6777 return TRUE;
6778
6779 htab = ppc_elf_hash_table (link_info);
6780 if (htab == NULL)
6781 return TRUE;
6782
6783 isec->size = (isec->size + 3) & -4;
6784 if (isec->rawsize == 0)
6785 isec->rawsize = isec->size;
6786 trampbase = isec->size;
6787
6788 BFD_ASSERT (isec->sec_info_type == SEC_INFO_TYPE_NONE
6789 || isec->sec_info_type == SEC_INFO_TYPE_TARGET);
6790 isec->sec_info_type = SEC_INFO_TYPE_TARGET;
6791
6792 if (htab->params->ppc476_workaround
6793 || htab->params->pic_fixup > 0)
6794 {
6795 if (elf_section_data (isec)->sec_info == NULL)
6796 {
6797 elf_section_data (isec)->sec_info
6798 = bfd_zalloc (abfd, sizeof (struct ppc_elf_relax_info));
6799 if (elf_section_data (isec)->sec_info == NULL)
6800 return FALSE;
6801 }
6802 relax_info = elf_section_data (isec)->sec_info;
6803 trampbase -= relax_info->workaround_size;
6804 }
6805
6806 maybe_pasted = (strcmp (isec->output_section->name, ".init") == 0
6807 || strcmp (isec->output_section->name, ".fini") == 0);
6808 /* Space for a branch around any trampolines. */
6809 trampoff = trampbase;
6810 if (maybe_pasted && trampbase == isec->rawsize)
6811 trampoff += 4;
6812
6813 symtab_hdr = &elf_symtab_hdr (abfd);
6814 picfixup_size = 0;
6815 if (htab->params->branch_trampolines
6816 || htab->params->pic_fixup > 0)
6817 {
6818 /* Get a copy of the native relocations. */
6819 if (isec->reloc_count != 0)
6820 {
6821 internal_relocs = _bfd_elf_link_read_relocs (abfd, isec, NULL, NULL,
6822 link_info->keep_memory);
6823 if (internal_relocs == NULL)
6824 goto error_return;
6825 }
6826
6827 got2 = bfd_get_section_by_name (abfd, ".got2");
6828
6829 irelend = internal_relocs + isec->reloc_count;
6830 for (irel = internal_relocs; irel < irelend; irel++)
6831 {
6832 unsigned long r_type = ELF32_R_TYPE (irel->r_info);
6833 bfd_vma toff, roff;
6834 asection *tsec;
6835 struct one_branch_fixup *f;
6836 size_t insn_offset = 0;
6837 bfd_vma max_branch_offset = 0, val;
6838 bfd_byte *hit_addr;
6839 unsigned long t0;
6840 struct elf_link_hash_entry *h;
6841 struct plt_entry **plist;
6842 unsigned char sym_type;
6843
6844 switch (r_type)
6845 {
6846 case R_PPC_REL24:
6847 case R_PPC_LOCAL24PC:
6848 case R_PPC_PLTREL24:
6849 max_branch_offset = 1 << 25;
6850 break;
6851
6852 case R_PPC_REL14:
6853 case R_PPC_REL14_BRTAKEN:
6854 case R_PPC_REL14_BRNTAKEN:
6855 max_branch_offset = 1 << 15;
6856 break;
6857
6858 case R_PPC_ADDR16_HA:
6859 if (htab->params->pic_fixup > 0)
6860 break;
6861 continue;
6862
6863 default:
6864 continue;
6865 }
6866
6867 /* Get the value of the symbol referred to by the reloc. */
6868 h = NULL;
6869 if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
6870 {
6871 /* A local symbol. */
6872 Elf_Internal_Sym *isym;
6873
6874 /* Read this BFD's local symbols. */
6875 if (isymbuf == NULL)
6876 {
6877 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
6878 if (isymbuf == NULL)
6879 isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
6880 symtab_hdr->sh_info, 0,
6881 NULL, NULL, NULL);
6882 if (isymbuf == 0)
6883 goto error_return;
6884 }
6885 isym = isymbuf + ELF32_R_SYM (irel->r_info);
6886 if (isym->st_shndx == SHN_UNDEF)
6887 tsec = bfd_und_section_ptr;
6888 else if (isym->st_shndx == SHN_ABS)
6889 tsec = bfd_abs_section_ptr;
6890 else if (isym->st_shndx == SHN_COMMON)
6891 tsec = bfd_com_section_ptr;
6892 else
6893 tsec = bfd_section_from_elf_index (abfd, isym->st_shndx);
6894
6895 toff = isym->st_value;
6896 sym_type = ELF_ST_TYPE (isym->st_info);
6897 }
6898 else
6899 {
6900 /* Global symbol handling. */
6901 unsigned long indx;
6902
6903 indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
6904 h = elf_sym_hashes (abfd)[indx];
6905
6906 while (h->root.type == bfd_link_hash_indirect
6907 || h->root.type == bfd_link_hash_warning)
6908 h = (struct elf_link_hash_entry *) h->root.u.i.link;
6909
6910 if (h->root.type == bfd_link_hash_defined
6911 || h->root.type == bfd_link_hash_defweak)
6912 {
6913 tsec = h->root.u.def.section;
6914 toff = h->root.u.def.value;
6915 }
6916 else if (h->root.type == bfd_link_hash_undefined
6917 || h->root.type == bfd_link_hash_undefweak)
6918 {
6919 tsec = bfd_und_section_ptr;
6920 toff = bfd_link_relocatable (link_info) ? indx : 0;
6921 }
6922 else
6923 continue;
6924
6925 /* If this branch is to __tls_get_addr then we may later
6926 optimise away the call. We won't be needing a long-
6927 branch stub in that case. */
6928 if (bfd_link_executable (link_info)
6929 && h == htab->tls_get_addr
6930 && irel != internal_relocs)
6931 {
6932 unsigned long t_symndx = ELF32_R_SYM (irel[-1].r_info);
6933 unsigned long t_rtype = ELF32_R_TYPE (irel[-1].r_info);
6934 unsigned int tls_mask = 0;
6935
6936 /* The previous reloc should be one of R_PPC_TLSGD or
6937 R_PPC_TLSLD, or for older object files, a reloc
6938 on the __tls_get_addr arg setup insn. Get tls
6939 mask bits from the symbol on that reloc. */
6940 if (t_symndx < symtab_hdr->sh_info)
6941 {
6942 bfd_vma *local_got_offsets = elf_local_got_offsets (abfd);
6943
6944 if (local_got_offsets != NULL)
6945 {
6946 struct plt_entry **local_plt = (struct plt_entry **)
6947 (local_got_offsets + symtab_hdr->sh_info);
6948 char *lgot_masks = (char *)
6949 (local_plt + symtab_hdr->sh_info);
6950 tls_mask = lgot_masks[t_symndx];
6951 }
6952 }
6953 else
6954 {
6955 struct elf_link_hash_entry *th
6956 = elf_sym_hashes (abfd)[t_symndx - symtab_hdr->sh_info];
6957
6958 while (th->root.type == bfd_link_hash_indirect
6959 || th->root.type == bfd_link_hash_warning)
6960 th = (struct elf_link_hash_entry *) th->root.u.i.link;
6961
6962 tls_mask
6963 = ((struct ppc_elf_link_hash_entry *) th)->tls_mask;
6964 }
6965
6966 /* The mask bits tell us if the call will be
6967 optimised away. */
6968 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0
6969 && (t_rtype == R_PPC_TLSGD
6970 || t_rtype == R_PPC_GOT_TLSGD16
6971 || t_rtype == R_PPC_GOT_TLSGD16_LO))
6972 continue;
6973 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0
6974 && (t_rtype == R_PPC_TLSLD
6975 || t_rtype == R_PPC_GOT_TLSLD16
6976 || t_rtype == R_PPC_GOT_TLSLD16_LO))
6977 continue;
6978 }
6979
6980 sym_type = h->type;
6981 }
6982
6983 if (r_type == R_PPC_ADDR16_HA)
6984 {
6985 if (h != NULL
6986 && !h->def_regular
6987 && h->protected_def
6988 && ppc_elf_hash_entry (h)->has_addr16_ha
6989 && ppc_elf_hash_entry (h)->has_addr16_lo)
6990 picfixup_size += 12;
6991 continue;
6992 }
6993
6994 /* The condition here under which we call find_plt_ent must
6995 match that in relocate_section. If we call find_plt_ent here
6996 but not in relocate_section, or vice versa, then the branch
6997 destination used here may be incorrect. */
6998 plist = NULL;
6999 if (h != NULL)
7000 {
7001 /* We know is_branch_reloc (r_type) is true. */
7002 if (h->type == STT_GNU_IFUNC
7003 || r_type == R_PPC_PLTREL24)
7004 plist = &h->plt.plist;
7005 }
7006 else if (sym_type == STT_GNU_IFUNC
7007 && elf_local_got_offsets (abfd) != NULL)
7008 {
7009 bfd_vma *local_got_offsets = elf_local_got_offsets (abfd);
7010 struct plt_entry **local_plt = (struct plt_entry **)
7011 (local_got_offsets + symtab_hdr->sh_info);
7012 plist = local_plt + ELF32_R_SYM (irel->r_info);
7013 }
7014 if (plist != NULL)
7015 {
7016 bfd_vma addend = 0;
7017 struct plt_entry *ent;
7018
7019 if (r_type == R_PPC_PLTREL24 && bfd_link_pic (link_info))
7020 addend = irel->r_addend;
7021 ent = find_plt_ent (plist, got2, addend);
7022 if (ent != NULL)
7023 {
7024 if (htab->plt_type == PLT_NEW
7025 || h == NULL
7026 || !htab->elf.dynamic_sections_created
7027 || h->dynindx == -1)
7028 {
7029 tsec = htab->glink;
7030 toff = ent->glink_offset;
7031 }
7032 else
7033 {
7034 tsec = htab->elf.splt;
7035 toff = ent->plt.offset;
7036 }
7037 }
7038 }
7039
7040 /* If the branch and target are in the same section, you have
7041 no hope of adding stubs. We'll error out later should the
7042 branch overflow. */
7043 if (tsec == isec)
7044 continue;
7045
7046 /* There probably isn't any reason to handle symbols in
7047 SEC_MERGE sections; SEC_MERGE doesn't seem a likely
7048 attribute for a code section, and we are only looking at
7049 branches. However, implement it correctly here as a
7050 reference for other target relax_section functions. */
7051 if (0 && tsec->sec_info_type == SEC_INFO_TYPE_MERGE)
7052 {
7053 /* At this stage in linking, no SEC_MERGE symbol has been
7054 adjusted, so all references to such symbols need to be
7055 passed through _bfd_merged_section_offset. (Later, in
7056 relocate_section, all SEC_MERGE symbols *except* for
7057 section symbols have been adjusted.)
7058
7059 gas may reduce relocations against symbols in SEC_MERGE
7060 sections to a relocation against the section symbol when
7061 the original addend was zero. When the reloc is against
7062 a section symbol we should include the addend in the
7063 offset passed to _bfd_merged_section_offset, since the
7064 location of interest is the original symbol. On the
7065 other hand, an access to "sym+addend" where "sym" is not
7066 a section symbol should not include the addend; Such an
7067 access is presumed to be an offset from "sym"; The
7068 location of interest is just "sym". */
7069 if (sym_type == STT_SECTION)
7070 toff += irel->r_addend;
7071
7072 toff
7073 = _bfd_merged_section_offset (abfd, &tsec,
7074 elf_section_data (tsec)->sec_info,
7075 toff);
7076
7077 if (sym_type != STT_SECTION)
7078 toff += irel->r_addend;
7079 }
7080 /* PLTREL24 addends are special. */
7081 else if (r_type != R_PPC_PLTREL24)
7082 toff += irel->r_addend;
7083
7084 /* Attempted -shared link of non-pic code loses. */
7085 if ((!bfd_link_relocatable (link_info)
7086 && tsec == bfd_und_section_ptr)
7087 || tsec->output_section == NULL
7088 || (tsec->owner != NULL
7089 && (tsec->owner->flags & BFD_PLUGIN) != 0))
7090 continue;
7091
7092 roff = irel->r_offset;
7093
7094 /* If the branch is in range, no need to do anything. */
7095 if (tsec != bfd_und_section_ptr
7096 && (!bfd_link_relocatable (link_info)
7097 /* A relocatable link may have sections moved during
7098 final link, so do not presume they remain in range. */
7099 || tsec->output_section == isec->output_section))
7100 {
7101 bfd_vma symaddr, reladdr;
7102
7103 symaddr = tsec->output_section->vma + tsec->output_offset + toff;
7104 reladdr = isec->output_section->vma + isec->output_offset + roff;
7105 if (symaddr - reladdr + max_branch_offset
7106 < 2 * max_branch_offset)
7107 continue;
7108 }
7109
7110 /* Look for an existing fixup to this address. */
7111 for (f = branch_fixups; f ; f = f->next)
7112 if (f->tsec == tsec && f->toff == toff)
7113 break;
7114
7115 if (f == NULL)
7116 {
7117 size_t size;
7118 unsigned long stub_rtype;
7119
7120 val = trampoff - roff;
7121 if (val >= max_branch_offset)
7122 /* Oh dear, we can't reach a trampoline. Don't try to add
7123 one. We'll report an error later. */
7124 continue;
7125
7126 if (bfd_link_pic (link_info))
7127 {
7128 size = 4 * ARRAY_SIZE (shared_stub_entry);
7129 insn_offset = 12;
7130 }
7131 else
7132 {
7133 size = 4 * ARRAY_SIZE (stub_entry);
7134 insn_offset = 0;
7135 }
7136 stub_rtype = R_PPC_RELAX;
7137 if (tsec == htab->elf.splt
7138 || tsec == htab->glink)
7139 {
7140 stub_rtype = R_PPC_RELAX_PLT;
7141 if (r_type == R_PPC_PLTREL24)
7142 stub_rtype = R_PPC_RELAX_PLTREL24;
7143 }
7144
7145 /* Hijack the old relocation. Since we need two
7146 relocations for this use a "composite" reloc. */
7147 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
7148 stub_rtype);
7149 irel->r_offset = trampoff + insn_offset;
7150 if (r_type == R_PPC_PLTREL24
7151 && stub_rtype != R_PPC_RELAX_PLTREL24)
7152 irel->r_addend = 0;
7153
7154 /* Record the fixup so we don't do it again this section. */
7155 f = bfd_malloc (sizeof (*f));
7156 f->next = branch_fixups;
7157 f->tsec = tsec;
7158 f->toff = toff;
7159 f->trampoff = trampoff;
7160 branch_fixups = f;
7161
7162 trampoff += size;
7163 changes++;
7164 }
7165 else
7166 {
7167 val = f->trampoff - roff;
7168 if (val >= max_branch_offset)
7169 continue;
7170
7171 /* Nop out the reloc, since we're finalizing things here. */
7172 irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
7173 }
7174
7175 /* Get the section contents. */
7176 if (contents == NULL)
7177 {
7178 /* Get cached copy if it exists. */
7179 if (elf_section_data (isec)->this_hdr.contents != NULL)
7180 contents = elf_section_data (isec)->this_hdr.contents;
7181 /* Go get them off disk. */
7182 else if (!bfd_malloc_and_get_section (abfd, isec, &contents))
7183 goto error_return;
7184 }
7185
7186 /* Fix up the existing branch to hit the trampoline. */
7187 hit_addr = contents + roff;
7188 switch (r_type)
7189 {
7190 case R_PPC_REL24:
7191 case R_PPC_LOCAL24PC:
7192 case R_PPC_PLTREL24:
7193 t0 = bfd_get_32 (abfd, hit_addr);
7194 t0 &= ~0x3fffffc;
7195 t0 |= val & 0x3fffffc;
7196 bfd_put_32 (abfd, t0, hit_addr);
7197 break;
7198
7199 case R_PPC_REL14:
7200 case R_PPC_REL14_BRTAKEN:
7201 case R_PPC_REL14_BRNTAKEN:
7202 t0 = bfd_get_32 (abfd, hit_addr);
7203 t0 &= ~0xfffc;
7204 t0 |= val & 0xfffc;
7205 bfd_put_32 (abfd, t0, hit_addr);
7206 break;
7207 }
7208 }
7209
7210 while (branch_fixups != NULL)
7211 {
7212 struct one_branch_fixup *f = branch_fixups;
7213 branch_fixups = branch_fixups->next;
7214 free (f);
7215 }
7216 }
7217
7218 workaround_change = FALSE;
7219 newsize = trampoff;
7220 if (htab->params->ppc476_workaround
7221 && (!bfd_link_relocatable (link_info)
7222 || isec->output_section->alignment_power >= htab->params->pagesize_p2))
7223 {
7224 bfd_vma addr, end_addr;
7225 unsigned int crossings;
7226 bfd_vma pagesize = (bfd_vma) 1 << htab->params->pagesize_p2;
7227
7228 addr = isec->output_section->vma + isec->output_offset;
7229 end_addr = addr + trampoff;
7230 addr &= -pagesize;
7231 crossings = ((end_addr & -pagesize) - addr) >> htab->params->pagesize_p2;
7232 if (crossings != 0)
7233 {
7234 /* Keep space aligned, to ensure the patch code itself does
7235 not cross a page. Don't decrease size calculated on a
7236 previous pass as otherwise we might never settle on a layout. */
7237 newsize = 15 - ((end_addr - 1) & 15);
7238 newsize += crossings * 16;
7239 if (relax_info->workaround_size < newsize)
7240 {
7241 relax_info->workaround_size = newsize;
7242 workaround_change = TRUE;
7243 }
7244 /* Ensure relocate_section is called. */
7245 isec->flags |= SEC_RELOC;
7246 }
7247 newsize = trampoff + relax_info->workaround_size;
7248 }
7249
7250 if (htab->params->pic_fixup > 0)
7251 {
7252 picfixup_size -= relax_info->picfixup_size;
7253 if (picfixup_size != 0)
7254 relax_info->picfixup_size += picfixup_size;
7255 newsize += relax_info->picfixup_size;
7256 }
7257
7258 if (changes != 0 || picfixup_size != 0 || workaround_change)
7259 isec->size = newsize;
7260
7261 if (isymbuf != NULL
7262 && symtab_hdr->contents != (unsigned char *) isymbuf)
7263 {
7264 if (! link_info->keep_memory)
7265 free (isymbuf);
7266 else
7267 {
7268 /* Cache the symbols for elf_link_input_bfd. */
7269 symtab_hdr->contents = (unsigned char *) isymbuf;
7270 }
7271 }
7272
7273 if (contents != NULL
7274 && elf_section_data (isec)->this_hdr.contents != contents)
7275 {
7276 if (!changes && !link_info->keep_memory)
7277 free (contents);
7278 else
7279 {
7280 /* Cache the section contents for elf_link_input_bfd. */
7281 elf_section_data (isec)->this_hdr.contents = contents;
7282 }
7283 }
7284
7285 changes += picfixup_size;
7286 if (changes != 0)
7287 {
7288 /* Append sufficient NOP relocs so we can write out relocation
7289 information for the trampolines. */
7290 Elf_Internal_Shdr *rel_hdr;
7291 Elf_Internal_Rela *new_relocs = bfd_malloc ((changes + isec->reloc_count)
7292 * sizeof (*new_relocs));
7293 unsigned ix;
7294
7295 if (!new_relocs)
7296 goto error_return;
7297 memcpy (new_relocs, internal_relocs,
7298 isec->reloc_count * sizeof (*new_relocs));
7299 for (ix = changes; ix--;)
7300 {
7301 irel = new_relocs + ix + isec->reloc_count;
7302
7303 irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
7304 }
7305 if (internal_relocs != elf_section_data (isec)->relocs)
7306 free (internal_relocs);
7307 elf_section_data (isec)->relocs = new_relocs;
7308 isec->reloc_count += changes;
7309 rel_hdr = _bfd_elf_single_rel_hdr (isec);
7310 rel_hdr->sh_size += changes * rel_hdr->sh_entsize;
7311 }
7312 else if (internal_relocs != NULL
7313 && elf_section_data (isec)->relocs != internal_relocs)
7314 free (internal_relocs);
7315
7316 *again = changes != 0 || workaround_change;
7317 return TRUE;
7318
7319 error_return:
7320 while (branch_fixups != NULL)
7321 {
7322 struct one_branch_fixup *f = branch_fixups;
7323 branch_fixups = branch_fixups->next;
7324 free (f);
7325 }
7326 if (isymbuf != NULL && (unsigned char *) isymbuf != symtab_hdr->contents)
7327 free (isymbuf);
7328 if (contents != NULL
7329 && elf_section_data (isec)->this_hdr.contents != contents)
7330 free (contents);
7331 if (internal_relocs != NULL
7332 && elf_section_data (isec)->relocs != internal_relocs)
7333 free (internal_relocs);
7334 return FALSE;
7335 }
7336 \f
7337 /* What to do when ld finds relocations against symbols defined in
7338 discarded sections. */
7339
7340 static unsigned int
7341 ppc_elf_action_discarded (asection *sec)
7342 {
7343 if (strcmp (".fixup", sec->name) == 0)
7344 return 0;
7345
7346 if (strcmp (".got2", sec->name) == 0)
7347 return 0;
7348
7349 return _bfd_elf_default_action_discarded (sec);
7350 }
7351 \f
7352 /* Fill in the address for a pointer generated in a linker section. */
7353
7354 static bfd_vma
7355 elf_finish_pointer_linker_section (bfd *input_bfd,
7356 elf_linker_section_t *lsect,
7357 struct elf_link_hash_entry *h,
7358 bfd_vma relocation,
7359 const Elf_Internal_Rela *rel)
7360 {
7361 elf_linker_section_pointers_t *linker_section_ptr;
7362
7363 BFD_ASSERT (lsect != NULL);
7364
7365 if (h != NULL)
7366 {
7367 /* Handle global symbol. */
7368 struct ppc_elf_link_hash_entry *eh;
7369
7370 eh = (struct ppc_elf_link_hash_entry *) h;
7371 BFD_ASSERT (eh->elf.def_regular);
7372 linker_section_ptr = eh->linker_section_pointer;
7373 }
7374 else
7375 {
7376 /* Handle local symbol. */
7377 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
7378
7379 BFD_ASSERT (is_ppc_elf (input_bfd));
7380 BFD_ASSERT (elf_local_ptr_offsets (input_bfd) != NULL);
7381 linker_section_ptr = elf_local_ptr_offsets (input_bfd)[r_symndx];
7382 }
7383
7384 linker_section_ptr = elf_find_pointer_linker_section (linker_section_ptr,
7385 rel->r_addend,
7386 lsect);
7387 BFD_ASSERT (linker_section_ptr != NULL);
7388
7389 /* Offset will always be a multiple of four, so use the bottom bit
7390 as a "written" flag. */
7391 if ((linker_section_ptr->offset & 1) == 0)
7392 {
7393 bfd_put_32 (lsect->section->owner,
7394 relocation + linker_section_ptr->addend,
7395 lsect->section->contents + linker_section_ptr->offset);
7396 linker_section_ptr->offset += 1;
7397 }
7398
7399 relocation = (lsect->section->output_section->vma
7400 + lsect->section->output_offset
7401 + linker_section_ptr->offset - 1
7402 - SYM_VAL (lsect->sym));
7403
7404 #ifdef DEBUG
7405 fprintf (stderr,
7406 "Finish pointer in linker section %s, offset = %ld (0x%lx)\n",
7407 lsect->name, (long) relocation, (long) relocation);
7408 #endif
7409
7410 return relocation;
7411 }
7412
7413 #define PPC_LO(v) ((v) & 0xffff)
7414 #define PPC_HI(v) (((v) >> 16) & 0xffff)
7415 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
7416
7417 static void
7418 write_glink_stub (struct plt_entry *ent, asection *plt_sec, unsigned char *p,
7419 struct bfd_link_info *info)
7420 {
7421 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
7422 bfd *output_bfd = info->output_bfd;
7423 bfd_vma plt;
7424
7425 plt = ((ent->plt.offset & ~1)
7426 + plt_sec->output_section->vma
7427 + plt_sec->output_offset);
7428
7429 if (bfd_link_pic (info))
7430 {
7431 bfd_vma got = 0;
7432
7433 if (ent->addend >= 32768)
7434 got = (ent->addend
7435 + ent->sec->output_section->vma
7436 + ent->sec->output_offset);
7437 else if (htab->elf.hgot != NULL)
7438 got = SYM_VAL (htab->elf.hgot);
7439
7440 plt -= got;
7441
7442 if (plt + 0x8000 < 0x10000)
7443 {
7444 bfd_put_32 (output_bfd, LWZ_11_30 + PPC_LO (plt), p);
7445 p += 4;
7446 bfd_put_32 (output_bfd, MTCTR_11, p);
7447 p += 4;
7448 bfd_put_32 (output_bfd, BCTR, p);
7449 p += 4;
7450 bfd_put_32 (output_bfd, htab->params->ppc476_workaround ? BA : NOP, p);
7451 p += 4;
7452 }
7453 else
7454 {
7455 bfd_put_32 (output_bfd, ADDIS_11_30 + PPC_HA (plt), p);
7456 p += 4;
7457 bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
7458 p += 4;
7459 bfd_put_32 (output_bfd, MTCTR_11, p);
7460 p += 4;
7461 bfd_put_32 (output_bfd, BCTR, p);
7462 p += 4;
7463 }
7464 }
7465 else
7466 {
7467 bfd_put_32 (output_bfd, LIS_11 + PPC_HA (plt), p);
7468 p += 4;
7469 bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
7470 p += 4;
7471 bfd_put_32 (output_bfd, MTCTR_11, p);
7472 p += 4;
7473 bfd_put_32 (output_bfd, BCTR, p);
7474 p += 4;
7475 }
7476 }
7477
7478 /* Return true if symbol is defined statically. */
7479
7480 static bfd_boolean
7481 is_static_defined (struct elf_link_hash_entry *h)
7482 {
7483 return ((h->root.type == bfd_link_hash_defined
7484 || h->root.type == bfd_link_hash_defweak)
7485 && h->root.u.def.section != NULL
7486 && h->root.u.def.section->output_section != NULL);
7487 }
7488
7489 /* If INSN is an opcode that may be used with an @tls operand, return
7490 the transformed insn for TLS optimisation, otherwise return 0. If
7491 REG is non-zero only match an insn with RB or RA equal to REG. */
7492
7493 unsigned int
7494 _bfd_elf_ppc_at_tls_transform (unsigned int insn, unsigned int reg)
7495 {
7496 unsigned int rtra;
7497
7498 if ((insn & (0x3f << 26)) != 31 << 26)
7499 return 0;
7500
7501 if (reg == 0 || ((insn >> 11) & 0x1f) == reg)
7502 rtra = insn & ((1 << 26) - (1 << 16));
7503 else if (((insn >> 16) & 0x1f) == reg)
7504 rtra = (insn & (0x1f << 21)) | ((insn & (0x1f << 11)) << 5);
7505 else
7506 return 0;
7507
7508 if ((insn & (0x3ff << 1)) == 266 << 1)
7509 /* add -> addi. */
7510 insn = 14 << 26;
7511 else if ((insn & (0x1f << 1)) == 23 << 1
7512 && ((insn & (0x1f << 6)) < 14 << 6
7513 || ((insn & (0x1f << 6)) >= 16 << 6
7514 && (insn & (0x1f << 6)) < 24 << 6)))
7515 /* load and store indexed -> dform. */
7516 insn = (32 | ((insn >> 6) & 0x1f)) << 26;
7517 else if ((insn & (((0x1a << 5) | 0x1f) << 1)) == 21 << 1)
7518 /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
7519 insn = ((58 | ((insn >> 6) & 4)) << 26) | ((insn >> 6) & 1);
7520 else if ((insn & (((0x1f << 5) | 0x1f) << 1)) == 341 << 1)
7521 /* lwax -> lwa. */
7522 insn = (58 << 26) | 2;
7523 else
7524 return 0;
7525 insn |= rtra;
7526 return insn;
7527 }
7528
7529 /* If INSN is an opcode that may be used with an @tprel operand, return
7530 the transformed insn for an undefined weak symbol, ie. with the
7531 thread pointer REG operand removed. Otherwise return 0. */
7532
7533 unsigned int
7534 _bfd_elf_ppc_at_tprel_transform (unsigned int insn, unsigned int reg)
7535 {
7536 if ((insn & (0x1f << 16)) == reg << 16
7537 && ((insn & (0x3f << 26)) == 14u << 26 /* addi */
7538 || (insn & (0x3f << 26)) == 15u << 26 /* addis */
7539 || (insn & (0x3f << 26)) == 32u << 26 /* lwz */
7540 || (insn & (0x3f << 26)) == 34u << 26 /* lbz */
7541 || (insn & (0x3f << 26)) == 36u << 26 /* stw */
7542 || (insn & (0x3f << 26)) == 38u << 26 /* stb */
7543 || (insn & (0x3f << 26)) == 40u << 26 /* lhz */
7544 || (insn & (0x3f << 26)) == 42u << 26 /* lha */
7545 || (insn & (0x3f << 26)) == 44u << 26 /* sth */
7546 || (insn & (0x3f << 26)) == 46u << 26 /* lmw */
7547 || (insn & (0x3f << 26)) == 47u << 26 /* stmw */
7548 || (insn & (0x3f << 26)) == 48u << 26 /* lfs */
7549 || (insn & (0x3f << 26)) == 50u << 26 /* lfd */
7550 || (insn & (0x3f << 26)) == 52u << 26 /* stfs */
7551 || (insn & (0x3f << 26)) == 54u << 26 /* stfd */
7552 || ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
7553 && (insn & 3) != 1)
7554 || ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */
7555 && ((insn & 3) == 0 || (insn & 3) == 3))))
7556 {
7557 insn &= ~(0x1f << 16);
7558 }
7559 else if ((insn & (0x1f << 21)) == reg << 21
7560 && ((insn & (0x3e << 26)) == 24u << 26 /* ori, oris */
7561 || (insn & (0x3e << 26)) == 26u << 26 /* xori,xoris */
7562 || (insn & (0x3e << 26)) == 28u << 26 /* andi,andis */))
7563 {
7564 insn &= ~(0x1f << 21);
7565 insn |= (insn & (0x1f << 16)) << 5;
7566 if ((insn & (0x3e << 26)) == 26 << 26 /* xori,xoris */)
7567 insn -= 2 >> 26; /* convert to ori,oris */
7568 }
7569 else
7570 insn = 0;
7571 return insn;
7572 }
7573
7574 static bfd_boolean
7575 is_insn_ds_form (unsigned int insn)
7576 {
7577 return ((insn & (0x3f << 26)) == 58u << 26 /* ld,ldu,lwa */
7578 || (insn & (0x3f << 26)) == 62u << 26 /* std,stdu,stq */
7579 || (insn & (0x3f << 26)) == 57u << 26 /* lfdp */
7580 || (insn & (0x3f << 26)) == 61u << 26 /* stfdp */);
7581 }
7582
7583 static bfd_boolean
7584 is_insn_dq_form (unsigned int insn)
7585 {
7586 return ((insn & (0x3f << 26)) == 56u << 26 /* lq */
7587 || ((insn & (0x3f << 26)) == (61u << 26) /* lxv, stxv */
7588 && (insn & 3) == 1));
7589 }
7590
7591 /* The RELOCATE_SECTION function is called by the ELF backend linker
7592 to handle the relocations for a section.
7593
7594 The relocs are always passed as Rela structures; if the section
7595 actually uses Rel structures, the r_addend field will always be
7596 zero.
7597
7598 This function is responsible for adjust the section contents as
7599 necessary, and (if using Rela relocs and generating a
7600 relocatable output file) adjusting the reloc addend as
7601 necessary.
7602
7603 This function does not have to worry about setting the reloc
7604 address or the reloc symbol index.
7605
7606 LOCAL_SYMS is a pointer to the swapped in local symbols.
7607
7608 LOCAL_SECTIONS is an array giving the section in the input file
7609 corresponding to the st_shndx field of each local symbol.
7610
7611 The global hash table entry for the global symbols can be found
7612 via elf_sym_hashes (input_bfd).
7613
7614 When generating relocatable output, this function must handle
7615 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
7616 going to be the section symbol corresponding to the output
7617 section, which means that the addend must be adjusted
7618 accordingly. */
7619
7620 static bfd_boolean
7621 ppc_elf_relocate_section (bfd *output_bfd,
7622 struct bfd_link_info *info,
7623 bfd *input_bfd,
7624 asection *input_section,
7625 bfd_byte *contents,
7626 Elf_Internal_Rela *relocs,
7627 Elf_Internal_Sym *local_syms,
7628 asection **local_sections)
7629 {
7630 Elf_Internal_Shdr *symtab_hdr;
7631 struct elf_link_hash_entry **sym_hashes;
7632 struct ppc_elf_link_hash_table *htab;
7633 Elf_Internal_Rela *rel;
7634 Elf_Internal_Rela *wrel;
7635 Elf_Internal_Rela *relend;
7636 Elf_Internal_Rela outrel;
7637 asection *got2;
7638 bfd_vma *local_got_offsets;
7639 bfd_boolean ret = TRUE;
7640 bfd_vma d_offset = (bfd_big_endian (input_bfd) ? 2 : 0);
7641 bfd_boolean is_vxworks_tls;
7642 unsigned int picfixup_size = 0;
7643 struct ppc_elf_relax_info *relax_info = NULL;
7644
7645 #ifdef DEBUG
7646 _bfd_error_handler ("ppc_elf_relocate_section called for %B section %A, "
7647 "%ld relocations%s",
7648 input_bfd, input_section,
7649 (long) input_section->reloc_count,
7650 (bfd_link_relocatable (info)) ? " (relocatable)" : "");
7651 #endif
7652
7653 got2 = bfd_get_section_by_name (input_bfd, ".got2");
7654
7655 /* Initialize howto table if not already done. */
7656 if (!ppc_elf_howto_table[R_PPC_ADDR32])
7657 ppc_elf_howto_init ();
7658
7659 htab = ppc_elf_hash_table (info);
7660 local_got_offsets = elf_local_got_offsets (input_bfd);
7661 symtab_hdr = &elf_symtab_hdr (input_bfd);
7662 sym_hashes = elf_sym_hashes (input_bfd);
7663 /* We have to handle relocations in vxworks .tls_vars sections
7664 specially, because the dynamic loader is 'weird'. */
7665 is_vxworks_tls = (htab->is_vxworks && bfd_link_pic (info)
7666 && !strcmp (input_section->output_section->name,
7667 ".tls_vars"));
7668 if (input_section->sec_info_type == SEC_INFO_TYPE_TARGET)
7669 relax_info = elf_section_data (input_section)->sec_info;
7670 rel = wrel = relocs;
7671 relend = relocs + input_section->reloc_count;
7672 for (; rel < relend; wrel++, rel++)
7673 {
7674 enum elf_ppc_reloc_type r_type;
7675 bfd_vma addend;
7676 bfd_reloc_status_type r;
7677 Elf_Internal_Sym *sym;
7678 asection *sec;
7679 struct elf_link_hash_entry *h;
7680 const char *sym_name;
7681 reloc_howto_type *howto;
7682 unsigned long r_symndx;
7683 bfd_vma relocation;
7684 bfd_vma branch_bit, from;
7685 bfd_boolean unresolved_reloc;
7686 bfd_boolean warned;
7687 unsigned int tls_type, tls_mask, tls_gd;
7688 struct plt_entry **ifunc;
7689 struct reloc_howto_struct alt_howto;
7690
7691 again:
7692 r_type = ELF32_R_TYPE (rel->r_info);
7693 sym = NULL;
7694 sec = NULL;
7695 h = NULL;
7696 unresolved_reloc = FALSE;
7697 warned = FALSE;
7698 r_symndx = ELF32_R_SYM (rel->r_info);
7699
7700 if (r_symndx < symtab_hdr->sh_info)
7701 {
7702 sym = local_syms + r_symndx;
7703 sec = local_sections[r_symndx];
7704 sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
7705
7706 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
7707 }
7708 else
7709 {
7710 bfd_boolean ignored;
7711
7712 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
7713 r_symndx, symtab_hdr, sym_hashes,
7714 h, sec, relocation,
7715 unresolved_reloc, warned, ignored);
7716
7717 sym_name = h->root.root.string;
7718 }
7719
7720 if (sec != NULL && discarded_section (sec))
7721 {
7722 /* For relocs against symbols from removed linkonce sections,
7723 or sections discarded by a linker script, we just want the
7724 section contents zeroed. Avoid any special processing. */
7725 howto = NULL;
7726 if (r_type < R_PPC_max)
7727 howto = ppc_elf_howto_table[r_type];
7728
7729 _bfd_clear_contents (howto, input_bfd, input_section,
7730 contents + rel->r_offset);
7731 wrel->r_offset = rel->r_offset;
7732 wrel->r_info = 0;
7733 wrel->r_addend = 0;
7734
7735 /* For ld -r, remove relocations in debug sections against
7736 symbols defined in discarded sections. Not done for
7737 non-debug to preserve relocs in .eh_frame which the
7738 eh_frame editing code expects to be present. */
7739 if (bfd_link_relocatable (info)
7740 && (input_section->flags & SEC_DEBUGGING))
7741 wrel--;
7742
7743 continue;
7744 }
7745
7746 if (bfd_link_relocatable (info))
7747 {
7748 if (got2 != NULL
7749 && r_type == R_PPC_PLTREL24
7750 && rel->r_addend != 0)
7751 {
7752 /* R_PPC_PLTREL24 is rather special. If non-zero, the
7753 addend specifies the GOT pointer offset within .got2. */
7754 rel->r_addend += got2->output_offset;
7755 }
7756 if (r_type != R_PPC_RELAX_PLT
7757 && r_type != R_PPC_RELAX_PLTREL24
7758 && r_type != R_PPC_RELAX)
7759 goto copy_reloc;
7760 }
7761
7762 /* TLS optimizations. Replace instruction sequences and relocs
7763 based on information we collected in tls_optimize. We edit
7764 RELOCS so that --emit-relocs will output something sensible
7765 for the final instruction stream. */
7766 tls_mask = 0;
7767 tls_gd = 0;
7768 if (h != NULL)
7769 tls_mask = ((struct ppc_elf_link_hash_entry *) h)->tls_mask;
7770 else if (local_got_offsets != NULL)
7771 {
7772 struct plt_entry **local_plt;
7773 char *lgot_masks;
7774 local_plt
7775 = (struct plt_entry **) (local_got_offsets + symtab_hdr->sh_info);
7776 lgot_masks = (char *) (local_plt + symtab_hdr->sh_info);
7777 tls_mask = lgot_masks[r_symndx];
7778 }
7779
7780 /* Ensure reloc mapping code below stays sane. */
7781 if ((R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TLSGD16 & 3)
7782 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TLSGD16_LO & 3)
7783 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TLSGD16_HI & 3)
7784 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TLSGD16_HA & 3)
7785 || (R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TPREL16 & 3)
7786 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TPREL16_LO & 3)
7787 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TPREL16_HI & 3)
7788 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TPREL16_HA & 3))
7789 abort ();
7790 switch (r_type)
7791 {
7792 default:
7793 break;
7794
7795 case R_PPC_GOT_TPREL16:
7796 case R_PPC_GOT_TPREL16_LO:
7797 if ((tls_mask & TLS_TLS) != 0
7798 && (tls_mask & TLS_TPREL) == 0)
7799 {
7800 bfd_vma insn;
7801
7802 insn = bfd_get_32 (input_bfd,
7803 contents + rel->r_offset - d_offset);
7804 insn &= 31 << 21;
7805 insn |= 0x3c020000; /* addis 0,2,0 */
7806 bfd_put_32 (input_bfd, insn,
7807 contents + rel->r_offset - d_offset);
7808 r_type = R_PPC_TPREL16_HA;
7809 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7810 }
7811 break;
7812
7813 case R_PPC_TLS:
7814 if ((tls_mask & TLS_TLS) != 0
7815 && (tls_mask & TLS_TPREL) == 0)
7816 {
7817 bfd_vma insn;
7818
7819 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
7820 insn = _bfd_elf_ppc_at_tls_transform (insn, 2);
7821 if (insn == 0)
7822 abort ();
7823 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
7824 r_type = R_PPC_TPREL16_LO;
7825 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7826
7827 /* Was PPC_TLS which sits on insn boundary, now
7828 PPC_TPREL16_LO which is at low-order half-word. */
7829 rel->r_offset += d_offset;
7830 }
7831 break;
7832
7833 case R_PPC_GOT_TLSGD16_HI:
7834 case R_PPC_GOT_TLSGD16_HA:
7835 tls_gd = TLS_TPRELGD;
7836 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
7837 goto tls_gdld_hi;
7838 break;
7839
7840 case R_PPC_GOT_TLSLD16_HI:
7841 case R_PPC_GOT_TLSLD16_HA:
7842 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
7843 {
7844 tls_gdld_hi:
7845 if ((tls_mask & tls_gd) != 0)
7846 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
7847 + R_PPC_GOT_TPREL16);
7848 else
7849 {
7850 rel->r_offset -= d_offset;
7851 bfd_put_32 (input_bfd, NOP, contents + rel->r_offset);
7852 r_type = R_PPC_NONE;
7853 }
7854 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7855 }
7856 break;
7857
7858 case R_PPC_GOT_TLSGD16:
7859 case R_PPC_GOT_TLSGD16_LO:
7860 tls_gd = TLS_TPRELGD;
7861 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
7862 goto tls_ldgd_opt;
7863 break;
7864
7865 case R_PPC_GOT_TLSLD16:
7866 case R_PPC_GOT_TLSLD16_LO:
7867 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
7868 {
7869 unsigned int insn1, insn2;
7870 bfd_vma offset;
7871
7872 tls_ldgd_opt:
7873 offset = (bfd_vma) -1;
7874 /* If not using the newer R_PPC_TLSGD/LD to mark
7875 __tls_get_addr calls, we must trust that the call
7876 stays with its arg setup insns, ie. that the next
7877 reloc is the __tls_get_addr call associated with
7878 the current reloc. Edit both insns. */
7879 if (input_section->has_tls_get_addr_call
7880 && rel + 1 < relend
7881 && branch_reloc_hash_match (input_bfd, rel + 1,
7882 htab->tls_get_addr))
7883 offset = rel[1].r_offset;
7884 /* We read the low GOT_TLS insn because we need to keep
7885 the destination reg. It may be something other than
7886 the usual r3, and moved to r3 before the call by
7887 intervening code. */
7888 insn1 = bfd_get_32 (input_bfd,
7889 contents + rel->r_offset - d_offset);
7890 if ((tls_mask & tls_gd) != 0)
7891 {
7892 /* IE */
7893 insn1 &= (0x1f << 21) | (0x1f << 16);
7894 insn1 |= 32 << 26; /* lwz */
7895 if (offset != (bfd_vma) -1)
7896 {
7897 rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
7898 insn2 = 0x7c631214; /* add 3,3,2 */
7899 bfd_put_32 (input_bfd, insn2, contents + offset);
7900 }
7901 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
7902 + R_PPC_GOT_TPREL16);
7903 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7904 }
7905 else
7906 {
7907 /* LE */
7908 insn1 &= 0x1f << 21;
7909 insn1 |= 0x3c020000; /* addis r,2,0 */
7910 if (tls_gd == 0)
7911 {
7912 /* Was an LD reloc. */
7913 for (r_symndx = 0;
7914 r_symndx < symtab_hdr->sh_info;
7915 r_symndx++)
7916 if (local_sections[r_symndx] == sec)
7917 break;
7918 if (r_symndx >= symtab_hdr->sh_info)
7919 r_symndx = STN_UNDEF;
7920 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
7921 if (r_symndx != STN_UNDEF)
7922 rel->r_addend -= (local_syms[r_symndx].st_value
7923 + sec->output_offset
7924 + sec->output_section->vma);
7925 }
7926 r_type = R_PPC_TPREL16_HA;
7927 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7928 if (offset != (bfd_vma) -1)
7929 {
7930 rel[1].r_info = ELF32_R_INFO (r_symndx, R_PPC_TPREL16_LO);
7931 rel[1].r_offset = offset + d_offset;
7932 rel[1].r_addend = rel->r_addend;
7933 insn2 = 0x38630000; /* addi 3,3,0 */
7934 bfd_put_32 (input_bfd, insn2, contents + offset);
7935 }
7936 }
7937 bfd_put_32 (input_bfd, insn1,
7938 contents + rel->r_offset - d_offset);
7939 if (tls_gd == 0)
7940 {
7941 /* We changed the symbol on an LD reloc. Start over
7942 in order to get h, sym, sec etc. right. */
7943 goto again;
7944 }
7945 }
7946 break;
7947
7948 case R_PPC_TLSGD:
7949 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
7950 {
7951 unsigned int insn2;
7952 bfd_vma offset = rel->r_offset;
7953
7954 if ((tls_mask & TLS_TPRELGD) != 0)
7955 {
7956 /* IE */
7957 r_type = R_PPC_NONE;
7958 insn2 = 0x7c631214; /* add 3,3,2 */
7959 }
7960 else
7961 {
7962 /* LE */
7963 r_type = R_PPC_TPREL16_LO;
7964 rel->r_offset += d_offset;
7965 insn2 = 0x38630000; /* addi 3,3,0 */
7966 }
7967 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7968 bfd_put_32 (input_bfd, insn2, contents + offset);
7969 /* Zap the reloc on the _tls_get_addr call too. */
7970 BFD_ASSERT (offset == rel[1].r_offset);
7971 rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
7972 }
7973 break;
7974
7975 case R_PPC_TLSLD:
7976 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
7977 {
7978 unsigned int insn2;
7979
7980 for (r_symndx = 0;
7981 r_symndx < symtab_hdr->sh_info;
7982 r_symndx++)
7983 if (local_sections[r_symndx] == sec)
7984 break;
7985 if (r_symndx >= symtab_hdr->sh_info)
7986 r_symndx = STN_UNDEF;
7987 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
7988 if (r_symndx != STN_UNDEF)
7989 rel->r_addend -= (local_syms[r_symndx].st_value
7990 + sec->output_offset
7991 + sec->output_section->vma);
7992
7993 rel->r_info = ELF32_R_INFO (r_symndx, R_PPC_TPREL16_LO);
7994 rel->r_offset += d_offset;
7995 insn2 = 0x38630000; /* addi 3,3,0 */
7996 bfd_put_32 (input_bfd, insn2,
7997 contents + rel->r_offset - d_offset);
7998 /* Zap the reloc on the _tls_get_addr call too. */
7999 BFD_ASSERT (rel->r_offset - d_offset == rel[1].r_offset);
8000 rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
8001 goto again;
8002 }
8003 break;
8004 }
8005
8006 /* Handle other relocations that tweak non-addend part of insn. */
8007 branch_bit = 0;
8008 switch (r_type)
8009 {
8010 default:
8011 break;
8012
8013 /* Branch taken prediction relocations. */
8014 case R_PPC_ADDR14_BRTAKEN:
8015 case R_PPC_REL14_BRTAKEN:
8016 branch_bit = BRANCH_PREDICT_BIT;
8017 /* Fall through. */
8018
8019 /* Branch not taken prediction relocations. */
8020 case R_PPC_ADDR14_BRNTAKEN:
8021 case R_PPC_REL14_BRNTAKEN:
8022 {
8023 bfd_vma insn;
8024
8025 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
8026 insn &= ~BRANCH_PREDICT_BIT;
8027 insn |= branch_bit;
8028
8029 from = (rel->r_offset
8030 + input_section->output_offset
8031 + input_section->output_section->vma);
8032
8033 /* Invert 'y' bit if not the default. */
8034 if ((bfd_signed_vma) (relocation + rel->r_addend - from) < 0)
8035 insn ^= BRANCH_PREDICT_BIT;
8036
8037 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
8038 break;
8039 }
8040 }
8041
8042 if (ELIMINATE_COPY_RELOCS
8043 && h != NULL
8044 && !h->def_regular
8045 && h->protected_def
8046 && ppc_elf_hash_entry (h)->has_addr16_ha
8047 && ppc_elf_hash_entry (h)->has_addr16_lo
8048 && htab->params->pic_fixup > 0)
8049 {
8050 /* Convert lis;addi or lis;load/store accessing a protected
8051 variable defined in a shared library to PIC. */
8052 unsigned int insn;
8053
8054 if (r_type == R_PPC_ADDR16_HA)
8055 {
8056 insn = bfd_get_32 (input_bfd,
8057 contents + rel->r_offset - d_offset);
8058 if ((insn & (0x3f << 26)) == (15u << 26)
8059 && (insn & (0x1f << 16)) == 0 /* lis */)
8060 {
8061 bfd_byte *p;
8062 bfd_vma off;
8063 bfd_vma got_addr;
8064
8065 p = (contents + input_section->size
8066 - relax_info->workaround_size
8067 - relax_info->picfixup_size
8068 + picfixup_size);
8069 off = (p - contents) - (rel->r_offset - d_offset);
8070 if (off > 0x1fffffc || (off & 3) != 0)
8071 info->callbacks->einfo
8072 (_("%H: fixup branch overflow\n"),
8073 input_bfd, input_section, rel->r_offset);
8074
8075 bfd_put_32 (input_bfd, B | off,
8076 contents + rel->r_offset - d_offset);
8077 got_addr = (htab->elf.sgot->output_section->vma
8078 + htab->elf.sgot->output_offset
8079 + (h->got.offset & ~1));
8080 wrel->r_offset = (p - contents) + d_offset;
8081 wrel->r_info = ELF32_R_INFO (0, R_PPC_ADDR16_HA);
8082 wrel->r_addend = got_addr;
8083 insn &= ~0xffff;
8084 insn |= ((unsigned int) (got_addr + 0x8000) >> 16) & 0xffff;
8085 bfd_put_32 (input_bfd, insn, p);
8086
8087 /* Convert lis to lwz, loading address from GOT. */
8088 insn &= ~0xffff;
8089 insn ^= (32u ^ 15u) << 26;
8090 insn |= (insn & (0x1f << 21)) >> 5;
8091 insn |= got_addr & 0xffff;
8092 bfd_put_32 (input_bfd, insn, p + 4);
8093
8094 bfd_put_32 (input_bfd, B | ((-4 - off) & 0x3ffffff), p + 8);
8095 picfixup_size += 12;
8096
8097 /* Use one of the spare relocs, so --emit-relocs
8098 output is reasonable. */
8099 memmove (rel + 1, rel, (relend - rel - 1) * sizeof (*rel));
8100 wrel++, rel++;
8101 rel->r_offset = wrel[-1].r_offset + 4;
8102 rel->r_info = ELF32_R_INFO (0, R_PPC_ADDR16_LO);
8103 rel->r_addend = wrel[-1].r_addend;
8104
8105 /* Continue on as if we had a got reloc, to output
8106 dynamic reloc. */
8107 r_type = R_PPC_GOT16_LO;
8108 }
8109 else
8110 _bfd_error_handler
8111 /* xgettext:c-format */
8112 (_("%B(%A+%#Lx): error: %s with unexpected instruction %#x"),
8113 input_bfd, input_section, rel->r_offset,
8114 "R_PPC_ADDR16_HA", insn);
8115 }
8116 else if (r_type == R_PPC_ADDR16_LO)
8117 {
8118 insn = bfd_get_32 (input_bfd,
8119 contents + rel->r_offset - d_offset);
8120 if ((insn & (0x3f << 26)) == 14u << 26 /* addi */
8121 || (insn & (0x3f << 26)) == 32u << 26 /* lwz */
8122 || (insn & (0x3f << 26)) == 34u << 26 /* lbz */
8123 || (insn & (0x3f << 26)) == 36u << 26 /* stw */
8124 || (insn & (0x3f << 26)) == 38u << 26 /* stb */
8125 || (insn & (0x3f << 26)) == 40u << 26 /* lhz */
8126 || (insn & (0x3f << 26)) == 42u << 26 /* lha */
8127 || (insn & (0x3f << 26)) == 44u << 26 /* sth */
8128 || (insn & (0x3f << 26)) == 46u << 26 /* lmw */
8129 || (insn & (0x3f << 26)) == 47u << 26 /* stmw */
8130 || (insn & (0x3f << 26)) == 48u << 26 /* lfs */
8131 || (insn & (0x3f << 26)) == 50u << 26 /* lfd */
8132 || (insn & (0x3f << 26)) == 52u << 26 /* stfs */
8133 || (insn & (0x3f << 26)) == 54u << 26 /* stfd */
8134 || ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
8135 && (insn & 3) != 1)
8136 || ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */
8137 && ((insn & 3) == 0 || (insn & 3) == 3)))
8138 {
8139 /* Arrange to apply the reloc addend, if any. */
8140 relocation = 0;
8141 unresolved_reloc = FALSE;
8142 rel->r_info = ELF32_R_INFO (0, r_type);
8143 }
8144 else
8145 _bfd_error_handler
8146 /* xgettext:c-format */
8147 (_("%B(%A+%#Lx): error: %s with unexpected instruction %#x"),
8148 input_bfd, input_section, rel->r_offset,
8149 "R_PPC_ADDR16_LO", insn);
8150 }
8151 }
8152
8153 ifunc = NULL;
8154 if (!htab->is_vxworks)
8155 {
8156 struct plt_entry *ent;
8157
8158 if (h != NULL)
8159 {
8160 if (h->type == STT_GNU_IFUNC)
8161 ifunc = &h->plt.plist;
8162 }
8163 else if (local_got_offsets != NULL
8164 && ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
8165 {
8166 struct plt_entry **local_plt;
8167
8168 local_plt = (struct plt_entry **) (local_got_offsets
8169 + symtab_hdr->sh_info);
8170 ifunc = local_plt + r_symndx;
8171 }
8172
8173 ent = NULL;
8174 if (ifunc != NULL
8175 && (!bfd_link_pic (info)
8176 || is_branch_reloc (r_type)))
8177 {
8178 addend = 0;
8179 if (r_type == R_PPC_PLTREL24 && bfd_link_pic (info))
8180 addend = rel->r_addend;
8181 ent = find_plt_ent (ifunc, got2, addend);
8182 }
8183 if (ent != NULL)
8184 {
8185 if (bfd_link_pic (info)
8186 && ent->sec != got2
8187 && htab->plt_type != PLT_NEW
8188 && (!htab->elf.dynamic_sections_created
8189 || h == NULL
8190 || h->dynindx == -1))
8191 {
8192 /* Uh oh, we are going to create a pic glink stub
8193 for an ifunc (here for h == NULL and later in
8194 finish_dynamic_symbol for h != NULL), and
8195 apparently are using code compiled with
8196 -mbss-plt. The difficulty is that -mbss-plt code
8197 gives no indication via a magic PLTREL24 addend
8198 whether r30 is equal to _GLOBAL_OFFSET_TABLE_ or
8199 is pointing into a .got2 section (and how far
8200 into .got2). */
8201 info->callbacks->einfo
8202 /* xgettext:c-format */
8203 (_("%X%H: unsupported bss-plt -fPIC ifunc %s\n"),
8204 input_bfd, input_section, rel->r_offset, sym_name);
8205 }
8206 if (h == NULL && (ent->plt.offset & 1) == 0)
8207 {
8208 Elf_Internal_Rela rela;
8209 bfd_byte *loc;
8210
8211 rela.r_offset = (htab->elf.iplt->output_section->vma
8212 + htab->elf.iplt->output_offset
8213 + ent->plt.offset);
8214 rela.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
8215 rela.r_addend = relocation;
8216 loc = htab->elf.irelplt->contents;
8217 loc += (htab->elf.irelplt->reloc_count++
8218 * sizeof (Elf32_External_Rela));
8219 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
8220 htab->local_ifunc_resolver = 1;
8221
8222 ent->plt.offset |= 1;
8223 }
8224 if (h == NULL && (ent->glink_offset & 1) == 0)
8225 {
8226 unsigned char *p = ((unsigned char *) htab->glink->contents
8227 + ent->glink_offset);
8228 write_glink_stub (ent, htab->elf.iplt, p, info);
8229 ent->glink_offset |= 1;
8230 }
8231
8232 unresolved_reloc = FALSE;
8233 if (htab->plt_type == PLT_NEW
8234 || !htab->elf.dynamic_sections_created
8235 || h == NULL
8236 || h->dynindx == -1)
8237 relocation = (htab->glink->output_section->vma
8238 + htab->glink->output_offset
8239 + (ent->glink_offset & ~1));
8240 else
8241 relocation = (htab->elf.splt->output_section->vma
8242 + htab->elf.splt->output_offset
8243 + ent->plt.offset);
8244 }
8245 }
8246
8247 addend = rel->r_addend;
8248 howto = NULL;
8249 if (r_type < R_PPC_max)
8250 howto = ppc_elf_howto_table[r_type];
8251
8252 switch (r_type)
8253 {
8254 default:
8255 break;
8256
8257 case R_PPC_TPREL16_HA:
8258 if (htab->do_tls_opt && relocation + addend + 0x8000 < 0x10000)
8259 {
8260 bfd_byte *p = contents + (rel->r_offset & ~3);
8261 unsigned int insn = bfd_get_32 (input_bfd, p);
8262 if ((insn & ((0x3f << 26) | 0x1f << 16))
8263 != ((15u << 26) | (2 << 16)) /* addis rt,2,imm */)
8264 /* xgettext:c-format */
8265 info->callbacks->minfo
8266 (_("%H: warning: %s unexpected insn %#x.\n"),
8267 input_bfd, input_section, rel->r_offset, howto->name, insn);
8268 else
8269 bfd_put_32 (input_bfd, NOP, p);
8270 }
8271 break;
8272
8273 case R_PPC_TPREL16_LO:
8274 if (htab->do_tls_opt && relocation + addend + 0x8000 < 0x10000)
8275 {
8276 bfd_byte *p = contents + (rel->r_offset & ~3);
8277 unsigned int insn = bfd_get_32 (input_bfd, p);
8278 insn &= ~(0x1f << 16);
8279 insn |= 2 << 16;
8280 bfd_put_32 (input_bfd, insn, p);
8281 }
8282 break;
8283 }
8284
8285 tls_type = 0;
8286 switch (r_type)
8287 {
8288 default:
8289 info->callbacks->einfo
8290 /* xgettext:c-format */
8291 (_("%P: %B: unknown relocation type %d for symbol %s\n"),
8292 input_bfd, (int) r_type, sym_name);
8293
8294 bfd_set_error (bfd_error_bad_value);
8295 ret = FALSE;
8296 goto copy_reloc;
8297
8298 case R_PPC_NONE:
8299 case R_PPC_TLS:
8300 case R_PPC_TLSGD:
8301 case R_PPC_TLSLD:
8302 case R_PPC_EMB_MRKREF:
8303 case R_PPC_GNU_VTINHERIT:
8304 case R_PPC_GNU_VTENTRY:
8305 goto copy_reloc;
8306
8307 /* GOT16 relocations. Like an ADDR16 using the symbol's
8308 address in the GOT as relocation value instead of the
8309 symbol's value itself. Also, create a GOT entry for the
8310 symbol and put the symbol value there. */
8311 case R_PPC_GOT_TLSGD16:
8312 case R_PPC_GOT_TLSGD16_LO:
8313 case R_PPC_GOT_TLSGD16_HI:
8314 case R_PPC_GOT_TLSGD16_HA:
8315 tls_type = TLS_TLS | TLS_GD;
8316 goto dogot;
8317
8318 case R_PPC_GOT_TLSLD16:
8319 case R_PPC_GOT_TLSLD16_LO:
8320 case R_PPC_GOT_TLSLD16_HI:
8321 case R_PPC_GOT_TLSLD16_HA:
8322 tls_type = TLS_TLS | TLS_LD;
8323 goto dogot;
8324
8325 case R_PPC_GOT_TPREL16:
8326 case R_PPC_GOT_TPREL16_LO:
8327 case R_PPC_GOT_TPREL16_HI:
8328 case R_PPC_GOT_TPREL16_HA:
8329 tls_type = TLS_TLS | TLS_TPREL;
8330 goto dogot;
8331
8332 case R_PPC_GOT_DTPREL16:
8333 case R_PPC_GOT_DTPREL16_LO:
8334 case R_PPC_GOT_DTPREL16_HI:
8335 case R_PPC_GOT_DTPREL16_HA:
8336 tls_type = TLS_TLS | TLS_DTPREL;
8337 goto dogot;
8338
8339 case R_PPC_GOT16:
8340 case R_PPC_GOT16_LO:
8341 case R_PPC_GOT16_HI:
8342 case R_PPC_GOT16_HA:
8343 tls_mask = 0;
8344 dogot:
8345 {
8346 /* Relocation is to the entry for this symbol in the global
8347 offset table. */
8348 bfd_vma off;
8349 bfd_vma *offp;
8350 unsigned long indx;
8351
8352 if (htab->elf.sgot == NULL)
8353 abort ();
8354
8355 indx = 0;
8356 if (tls_type == (TLS_TLS | TLS_LD)
8357 && (h == NULL
8358 || !h->def_dynamic))
8359 offp = &htab->tlsld_got.offset;
8360 else if (h != NULL)
8361 {
8362 if (!htab->elf.dynamic_sections_created
8363 || h->dynindx == -1
8364 || SYMBOL_REFERENCES_LOCAL (info, h)
8365 || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h))
8366 /* This is actually a static link, or it is a
8367 -Bsymbolic link and the symbol is defined
8368 locally, or the symbol was forced to be local
8369 because of a version file. */
8370 ;
8371 else
8372 {
8373 indx = h->dynindx;
8374 unresolved_reloc = FALSE;
8375 }
8376 offp = &h->got.offset;
8377 }
8378 else
8379 {
8380 if (local_got_offsets == NULL)
8381 abort ();
8382 offp = &local_got_offsets[r_symndx];
8383 }
8384
8385 /* The offset must always be a multiple of 4. We use the
8386 least significant bit to record whether we have already
8387 processed this entry. */
8388 off = *offp;
8389 if ((off & 1) != 0)
8390 off &= ~1;
8391 else
8392 {
8393 unsigned int tls_m = (tls_mask
8394 & (TLS_LD | TLS_GD | TLS_DTPREL
8395 | TLS_TPREL | TLS_TPRELGD));
8396
8397 if (offp == &htab->tlsld_got.offset)
8398 tls_m = TLS_LD;
8399 else if (h == NULL
8400 || !h->def_dynamic)
8401 tls_m &= ~TLS_LD;
8402
8403 /* We might have multiple got entries for this sym.
8404 Initialize them all. */
8405 do
8406 {
8407 int tls_ty = 0;
8408
8409 if ((tls_m & TLS_LD) != 0)
8410 {
8411 tls_ty = TLS_TLS | TLS_LD;
8412 tls_m &= ~TLS_LD;
8413 }
8414 else if ((tls_m & TLS_GD) != 0)
8415 {
8416 tls_ty = TLS_TLS | TLS_GD;
8417 tls_m &= ~TLS_GD;
8418 }
8419 else if ((tls_m & TLS_DTPREL) != 0)
8420 {
8421 tls_ty = TLS_TLS | TLS_DTPREL;
8422 tls_m &= ~TLS_DTPREL;
8423 }
8424 else if ((tls_m & (TLS_TPREL | TLS_TPRELGD)) != 0)
8425 {
8426 tls_ty = TLS_TLS | TLS_TPREL;
8427 tls_m = 0;
8428 }
8429
8430 /* Generate relocs for the dynamic linker. */
8431 if (indx != 0
8432 || (bfd_link_pic (info)
8433 && (h == NULL
8434 || !UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)
8435 || offp == &htab->tlsld_got.offset)))
8436 {
8437 asection *rsec = htab->elf.srelgot;
8438 bfd_byte * loc;
8439
8440 if (ifunc != NULL)
8441 {
8442 rsec = htab->elf.irelplt;
8443 if (indx == 0)
8444 htab->local_ifunc_resolver = 1;
8445 else if (is_static_defined (h))
8446 htab->maybe_local_ifunc_resolver = 1;
8447 }
8448 outrel.r_offset = (htab->elf.sgot->output_section->vma
8449 + htab->elf.sgot->output_offset
8450 + off);
8451 outrel.r_addend = 0;
8452 if (tls_ty & (TLS_LD | TLS_GD))
8453 {
8454 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPMOD32);
8455 if (tls_ty == (TLS_TLS | TLS_GD))
8456 {
8457 loc = rsec->contents;
8458 loc += (rsec->reloc_count++
8459 * sizeof (Elf32_External_Rela));
8460 bfd_elf32_swap_reloca_out (output_bfd,
8461 &outrel, loc);
8462 outrel.r_offset += 4;
8463 outrel.r_info
8464 = ELF32_R_INFO (indx, R_PPC_DTPREL32);
8465 }
8466 }
8467 else if (tls_ty == (TLS_TLS | TLS_DTPREL))
8468 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPREL32);
8469 else if (tls_ty == (TLS_TLS | TLS_TPREL))
8470 outrel.r_info = ELF32_R_INFO (indx, R_PPC_TPREL32);
8471 else if (indx != 0)
8472 outrel.r_info = ELF32_R_INFO (indx, R_PPC_GLOB_DAT);
8473 else if (ifunc != NULL)
8474 outrel.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
8475 else
8476 outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
8477 if (indx == 0 && tls_ty != (TLS_TLS | TLS_LD))
8478 {
8479 outrel.r_addend += relocation;
8480 if (tls_ty & (TLS_GD | TLS_DTPREL | TLS_TPREL))
8481 {
8482 if (htab->elf.tls_sec == NULL)
8483 outrel.r_addend = 0;
8484 else
8485 outrel.r_addend -= htab->elf.tls_sec->vma;
8486 }
8487 }
8488 loc = rsec->contents;
8489 loc += (rsec->reloc_count++
8490 * sizeof (Elf32_External_Rela));
8491 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
8492 }
8493
8494 /* Init the .got section contents if we're not
8495 emitting a reloc. */
8496 else
8497 {
8498 bfd_vma value = relocation;
8499
8500 if (tls_ty != 0)
8501 {
8502 if (htab->elf.tls_sec == NULL)
8503 value = 0;
8504 else
8505 {
8506 if (tls_ty & TLS_LD)
8507 value = 0;
8508 else
8509 value -= htab->elf.tls_sec->vma + DTP_OFFSET;
8510 if (tls_ty & TLS_TPREL)
8511 value += DTP_OFFSET - TP_OFFSET;
8512 }
8513
8514 if (tls_ty & (TLS_LD | TLS_GD))
8515 {
8516 bfd_put_32 (input_bfd, value,
8517 htab->elf.sgot->contents + off + 4);
8518 value = 1;
8519 }
8520 }
8521 bfd_put_32 (input_bfd, value,
8522 htab->elf.sgot->contents + off);
8523 }
8524
8525 off += 4;
8526 if (tls_ty & (TLS_LD | TLS_GD))
8527 off += 4;
8528 }
8529 while (tls_m != 0);
8530
8531 off = *offp;
8532 *offp = off | 1;
8533 }
8534
8535 if (off >= (bfd_vma) -2)
8536 abort ();
8537
8538 if ((tls_type & TLS_TLS) != 0)
8539 {
8540 if (tls_type != (TLS_TLS | TLS_LD))
8541 {
8542 if ((tls_mask & TLS_LD) != 0
8543 && !(h == NULL
8544 || !h->def_dynamic))
8545 off += 8;
8546 if (tls_type != (TLS_TLS | TLS_GD))
8547 {
8548 if ((tls_mask & TLS_GD) != 0)
8549 off += 8;
8550 if (tls_type != (TLS_TLS | TLS_DTPREL))
8551 {
8552 if ((tls_mask & TLS_DTPREL) != 0)
8553 off += 4;
8554 }
8555 }
8556 }
8557 }
8558
8559 /* If here for a picfixup, we're done. */
8560 if (r_type != ELF32_R_TYPE (rel->r_info))
8561 goto copy_reloc;
8562
8563 relocation = (htab->elf.sgot->output_section->vma
8564 + htab->elf.sgot->output_offset
8565 + off
8566 - SYM_VAL (htab->elf.hgot));
8567
8568 /* Addends on got relocations don't make much sense.
8569 x+off@got is actually x@got+off, and since the got is
8570 generated by a hash table traversal, the value in the
8571 got at entry m+n bears little relation to the entry m. */
8572 if (addend != 0)
8573 info->callbacks->einfo
8574 /* xgettext:c-format */
8575 (_("%H: non-zero addend on %s reloc against `%s'\n"),
8576 input_bfd, input_section, rel->r_offset,
8577 howto->name,
8578 sym_name);
8579 }
8580 break;
8581
8582 /* Relocations that need no special processing. */
8583 case R_PPC_LOCAL24PC:
8584 /* It makes no sense to point a local relocation
8585 at a symbol not in this object. */
8586 if (unresolved_reloc)
8587 {
8588 (*info->callbacks->undefined_symbol) (info,
8589 h->root.root.string,
8590 input_bfd,
8591 input_section,
8592 rel->r_offset,
8593 TRUE);
8594 goto copy_reloc;
8595 }
8596 if (h != NULL && h->type == STT_GNU_IFUNC && bfd_link_pic (info))
8597 {
8598 /* @local on an ifunc does not really make sense since
8599 the ifunc resolver can take you anywhere. More
8600 seriously, calls to ifuncs must go through a plt call
8601 stub, and for pic the plt call stubs uses r30 to
8602 access the PLT. The problem is that a call that is
8603 local won't have the +32k reloc addend trick marking
8604 -fPIC code, so the linker won't know whether r30 is
8605 _GLOBAL_OFFSET_TABLE_ or pointing into a .got2 section. */
8606 /* xgettext:c-format */
8607 info->callbacks->einfo (_("%X%H: @local call to ifunc %s\n"),
8608 input_bfd, input_section, rel->r_offset,
8609 h->root.root.string);
8610 }
8611 break;
8612
8613 case R_PPC_DTPREL16:
8614 case R_PPC_DTPREL16_LO:
8615 case R_PPC_DTPREL16_HI:
8616 case R_PPC_DTPREL16_HA:
8617 if (htab->elf.tls_sec != NULL)
8618 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
8619 break;
8620
8621 /* Relocations that may need to be propagated if this is a shared
8622 object. */
8623 case R_PPC_TPREL16:
8624 case R_PPC_TPREL16_LO:
8625 case R_PPC_TPREL16_HI:
8626 case R_PPC_TPREL16_HA:
8627 if (h != NULL
8628 && h->root.type == bfd_link_hash_undefweak
8629 && h->dynindx == -1)
8630 {
8631 /* Make this relocation against an undefined weak symbol
8632 resolve to zero. This is really just a tweak, since
8633 code using weak externs ought to check that they are
8634 defined before using them. */
8635 bfd_byte *p = contents + rel->r_offset - d_offset;
8636 unsigned int insn = bfd_get_32 (input_bfd, p);
8637 insn = _bfd_elf_ppc_at_tprel_transform (insn, 2);
8638 if (insn != 0)
8639 bfd_put_32 (input_bfd, insn, p);
8640 break;
8641 }
8642 if (htab->elf.tls_sec != NULL)
8643 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
8644 /* The TPREL16 relocs shouldn't really be used in shared
8645 libs or with non-local symbols as that will result in
8646 DT_TEXTREL being set, but support them anyway. */
8647 goto dodyn;
8648
8649 case R_PPC_TPREL32:
8650 if (htab->elf.tls_sec != NULL)
8651 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
8652 goto dodyn;
8653
8654 case R_PPC_DTPREL32:
8655 if (htab->elf.tls_sec != NULL)
8656 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
8657 goto dodyn;
8658
8659 case R_PPC_DTPMOD32:
8660 relocation = 1;
8661 addend = 0;
8662 goto dodyn;
8663
8664 case R_PPC_REL16:
8665 case R_PPC_REL16_LO:
8666 case R_PPC_REL16_HI:
8667 case R_PPC_REL16_HA:
8668 case R_PPC_REL16DX_HA:
8669 break;
8670
8671 case R_PPC_REL32:
8672 if (h == NULL || h == htab->elf.hgot)
8673 break;
8674 /* fall through */
8675
8676 case R_PPC_ADDR32:
8677 case R_PPC_ADDR16:
8678 case R_PPC_ADDR16_LO:
8679 case R_PPC_ADDR16_HI:
8680 case R_PPC_ADDR16_HA:
8681 case R_PPC_UADDR32:
8682 case R_PPC_UADDR16:
8683 goto dodyn;
8684
8685 case R_PPC_VLE_REL8:
8686 case R_PPC_VLE_REL15:
8687 case R_PPC_VLE_REL24:
8688 case R_PPC_REL24:
8689 case R_PPC_REL14:
8690 case R_PPC_REL14_BRTAKEN:
8691 case R_PPC_REL14_BRNTAKEN:
8692 /* If these relocations are not to a named symbol, they can be
8693 handled right here, no need to bother the dynamic linker. */
8694 if (SYMBOL_CALLS_LOCAL (info, h)
8695 || h == htab->elf.hgot)
8696 break;
8697 /* fall through */
8698
8699 case R_PPC_ADDR24:
8700 case R_PPC_ADDR14:
8701 case R_PPC_ADDR14_BRTAKEN:
8702 case R_PPC_ADDR14_BRNTAKEN:
8703 if (h != NULL && !bfd_link_pic (info))
8704 break;
8705 /* fall through */
8706
8707 dodyn:
8708 if ((input_section->flags & SEC_ALLOC) == 0
8709 || is_vxworks_tls)
8710 break;
8711
8712 if ((bfd_link_pic (info)
8713 && !(h != NULL
8714 && ((h->root.type == bfd_link_hash_undefined
8715 && ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
8716 || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)))
8717 && (must_be_dyn_reloc (info, r_type)
8718 || !SYMBOL_CALLS_LOCAL (info, h)))
8719 || (ELIMINATE_COPY_RELOCS
8720 && !bfd_link_pic (info)
8721 && h != NULL
8722 && h->dynindx != -1
8723 && !h->non_got_ref
8724 && !h->def_regular
8725 && !(h->protected_def
8726 && ppc_elf_hash_entry (h)->has_addr16_ha
8727 && ppc_elf_hash_entry (h)->has_addr16_lo
8728 && htab->params->pic_fixup > 0)))
8729 {
8730 int skip;
8731 bfd_byte *loc;
8732 asection *sreloc;
8733 long indx = 0;
8734
8735 #ifdef DEBUG
8736 fprintf (stderr, "ppc_elf_relocate_section needs to "
8737 "create relocation for %s\n",
8738 (h && h->root.root.string
8739 ? h->root.root.string : "<unknown>"));
8740 #endif
8741
8742 /* When generating a shared object, these relocations
8743 are copied into the output file to be resolved at run
8744 time. */
8745 skip = 0;
8746 outrel.r_offset = _bfd_elf_section_offset (output_bfd, info,
8747 input_section,
8748 rel->r_offset);
8749 if (outrel.r_offset == (bfd_vma) -1
8750 || outrel.r_offset == (bfd_vma) -2)
8751 skip = (int) outrel.r_offset;
8752 outrel.r_offset += (input_section->output_section->vma
8753 + input_section->output_offset);
8754
8755 if (skip)
8756 memset (&outrel, 0, sizeof outrel);
8757 else if (!SYMBOL_REFERENCES_LOCAL (info, h))
8758 {
8759 indx = h->dynindx;
8760 BFD_ASSERT (indx != -1);
8761 unresolved_reloc = FALSE;
8762 outrel.r_info = ELF32_R_INFO (indx, r_type);
8763 outrel.r_addend = rel->r_addend;
8764 }
8765 else
8766 {
8767 outrel.r_addend = relocation + rel->r_addend;
8768
8769 if (r_type != R_PPC_ADDR32)
8770 {
8771 if (ifunc != NULL)
8772 {
8773 /* If we get here when building a static
8774 executable, then the libc startup function
8775 responsible for applying indirect function
8776 relocations is going to complain about
8777 the reloc type.
8778 If we get here when building a dynamic
8779 executable, it will be because we have
8780 a text relocation. The dynamic loader
8781 will set the text segment writable and
8782 non-executable to apply text relocations.
8783 So we'll segfault when trying to run the
8784 indirection function to resolve the reloc. */
8785 info->callbacks->einfo
8786 /* xgettext:c-format */
8787 (_("%H: relocation %s for indirect "
8788 "function %s unsupported\n"),
8789 input_bfd, input_section, rel->r_offset,
8790 howto->name,
8791 sym_name);
8792 ret = FALSE;
8793 }
8794 else if (r_symndx == STN_UNDEF || bfd_is_abs_section (sec))
8795 ;
8796 else if (sec == NULL || sec->owner == NULL)
8797 {
8798 bfd_set_error (bfd_error_bad_value);
8799 ret = FALSE;
8800 }
8801 else
8802 {
8803 asection *osec;
8804
8805 /* We are turning this relocation into one
8806 against a section symbol. It would be
8807 proper to subtract the symbol's value,
8808 osec->vma, from the emitted reloc addend,
8809 but ld.so expects buggy relocs.
8810 FIXME: Why not always use a zero index? */
8811 osec = sec->output_section;
8812 indx = elf_section_data (osec)->dynindx;
8813 if (indx == 0)
8814 {
8815 osec = htab->elf.text_index_section;
8816 indx = elf_section_data (osec)->dynindx;
8817 }
8818 BFD_ASSERT (indx != 0);
8819 #ifdef DEBUG
8820 if (indx == 0)
8821 printf ("indx=%ld section=%s flags=%08x name=%s\n",
8822 indx, osec->name, osec->flags,
8823 h->root.root.string);
8824 #endif
8825 }
8826
8827 outrel.r_info = ELF32_R_INFO (indx, r_type);
8828 }
8829 else if (ifunc != NULL)
8830 outrel.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
8831 else
8832 outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
8833 }
8834
8835 sreloc = elf_section_data (input_section)->sreloc;
8836 if (ifunc)
8837 {
8838 sreloc = htab->elf.irelplt;
8839 if (indx == 0)
8840 htab->local_ifunc_resolver = 1;
8841 else if (is_static_defined (h))
8842 htab->maybe_local_ifunc_resolver = 1;
8843 }
8844 if (sreloc == NULL)
8845 return FALSE;
8846
8847 loc = sreloc->contents;
8848 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
8849 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
8850
8851 if (skip == -1)
8852 goto copy_reloc;
8853
8854 /* This reloc will be computed at runtime. Clear the memory
8855 so that it contains a predictable value for prelink. */
8856 if (!skip)
8857 {
8858 relocation = howto->pc_relative ? outrel.r_offset : 0;
8859 addend = 0;
8860 break;
8861 }
8862 }
8863 break;
8864
8865 case R_PPC_RELAX_PLT:
8866 case R_PPC_RELAX_PLTREL24:
8867 if (h != NULL)
8868 {
8869 struct plt_entry *ent;
8870 bfd_vma got2_addend = 0;
8871
8872 if (r_type == R_PPC_RELAX_PLTREL24)
8873 {
8874 if (bfd_link_pic (info))
8875 got2_addend = addend;
8876 addend = 0;
8877 }
8878 ent = find_plt_ent (&h->plt.plist, got2, got2_addend);
8879 if (htab->plt_type == PLT_NEW)
8880 relocation = (htab->glink->output_section->vma
8881 + htab->glink->output_offset
8882 + ent->glink_offset);
8883 else
8884 relocation = (htab->elf.splt->output_section->vma
8885 + htab->elf.splt->output_offset
8886 + ent->plt.offset);
8887 }
8888 /* Fall through. */
8889
8890 case R_PPC_RELAX:
8891 {
8892 const int *stub;
8893 size_t size;
8894 size_t insn_offset = rel->r_offset;
8895 unsigned int insn;
8896
8897 if (bfd_link_pic (info))
8898 {
8899 relocation -= (input_section->output_section->vma
8900 + input_section->output_offset
8901 + rel->r_offset - 4);
8902 stub = shared_stub_entry;
8903 bfd_put_32 (input_bfd, stub[0], contents + insn_offset - 12);
8904 bfd_put_32 (input_bfd, stub[1], contents + insn_offset - 8);
8905 bfd_put_32 (input_bfd, stub[2], contents + insn_offset - 4);
8906 stub += 3;
8907 size = ARRAY_SIZE (shared_stub_entry) - 3;
8908 }
8909 else
8910 {
8911 stub = stub_entry;
8912 size = ARRAY_SIZE (stub_entry);
8913 }
8914
8915 relocation += addend;
8916 if (bfd_link_relocatable (info))
8917 relocation = 0;
8918
8919 /* First insn is HA, second is LO. */
8920 insn = *stub++;
8921 insn |= ((relocation + 0x8000) >> 16) & 0xffff;
8922 bfd_put_32 (input_bfd, insn, contents + insn_offset);
8923 insn_offset += 4;
8924
8925 insn = *stub++;
8926 insn |= relocation & 0xffff;
8927 bfd_put_32 (input_bfd, insn, contents + insn_offset);
8928 insn_offset += 4;
8929 size -= 2;
8930
8931 while (size != 0)
8932 {
8933 insn = *stub++;
8934 --size;
8935 bfd_put_32 (input_bfd, insn, contents + insn_offset);
8936 insn_offset += 4;
8937 }
8938
8939 /* Rewrite the reloc and convert one of the trailing nop
8940 relocs to describe this relocation. */
8941 BFD_ASSERT (ELF32_R_TYPE (relend[-1].r_info) == R_PPC_NONE);
8942 /* The relocs are at the bottom 2 bytes */
8943 wrel->r_offset = rel->r_offset + d_offset;
8944 wrel->r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_HA);
8945 wrel->r_addend = rel->r_addend;
8946 memmove (wrel + 1, wrel, (relend - wrel - 1) * sizeof (*wrel));
8947 wrel++, rel++;
8948 wrel->r_offset += 4;
8949 wrel->r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_LO);
8950 }
8951 continue;
8952
8953 /* Indirect .sdata relocation. */
8954 case R_PPC_EMB_SDAI16:
8955 BFD_ASSERT (htab->sdata[0].section != NULL);
8956 if (!is_static_defined (htab->sdata[0].sym))
8957 {
8958 unresolved_reloc = TRUE;
8959 break;
8960 }
8961 relocation
8962 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[0],
8963 h, relocation, rel);
8964 addend = 0;
8965 break;
8966
8967 /* Indirect .sdata2 relocation. */
8968 case R_PPC_EMB_SDA2I16:
8969 BFD_ASSERT (htab->sdata[1].section != NULL);
8970 if (!is_static_defined (htab->sdata[1].sym))
8971 {
8972 unresolved_reloc = TRUE;
8973 break;
8974 }
8975 relocation
8976 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[1],
8977 h, relocation, rel);
8978 addend = 0;
8979 break;
8980
8981 /* Handle the TOC16 reloc. We want to use the offset within the .got
8982 section, not the actual VMA. This is appropriate when generating
8983 an embedded ELF object, for which the .got section acts like the
8984 AIX .toc section. */
8985 case R_PPC_TOC16: /* phony GOT16 relocations */
8986 if (sec == NULL || sec->output_section == NULL)
8987 {
8988 unresolved_reloc = TRUE;
8989 break;
8990 }
8991 BFD_ASSERT (strcmp (bfd_get_section_name (sec->owner, sec),
8992 ".got") == 0
8993 || strcmp (bfd_get_section_name (sec->owner, sec),
8994 ".cgot") == 0);
8995
8996 addend -= sec->output_section->vma + sec->output_offset + 0x8000;
8997 break;
8998
8999 case R_PPC_PLTREL24:
9000 if (h != NULL && ifunc == NULL)
9001 {
9002 struct plt_entry *ent;
9003
9004 ent = find_plt_ent (&h->plt.plist, got2,
9005 bfd_link_pic (info) ? addend : 0);
9006 if (ent == NULL
9007 || htab->elf.splt == NULL)
9008 {
9009 /* We didn't make a PLT entry for this symbol. This
9010 happens when statically linking PIC code, or when
9011 using -Bsymbolic. */
9012 }
9013 else
9014 {
9015 /* Relocation is to the entry for this symbol in the
9016 procedure linkage table. */
9017 unresolved_reloc = FALSE;
9018 if (htab->plt_type == PLT_NEW)
9019 relocation = (htab->glink->output_section->vma
9020 + htab->glink->output_offset
9021 + ent->glink_offset);
9022 else
9023 relocation = (htab->elf.splt->output_section->vma
9024 + htab->elf.splt->output_offset
9025 + ent->plt.offset);
9026 }
9027 }
9028
9029 /* R_PPC_PLTREL24 is rather special. If non-zero, the
9030 addend specifies the GOT pointer offset within .got2.
9031 Don't apply it to the relocation field. */
9032 addend = 0;
9033 break;
9034
9035 /* Relocate against _SDA_BASE_. */
9036 case R_PPC_SDAREL16:
9037 {
9038 const char *name;
9039 struct elf_link_hash_entry *sda = htab->sdata[0].sym;
9040
9041 if (sec == NULL
9042 || sec->output_section == NULL
9043 || !is_static_defined (sda))
9044 {
9045 unresolved_reloc = TRUE;
9046 break;
9047 }
9048 addend -= SYM_VAL (sda);
9049
9050 name = bfd_get_section_name (output_bfd, sec->output_section);
9051 if (!(strcmp (name, ".sdata") == 0
9052 || strcmp (name, ".sbss") == 0))
9053 {
9054 info->callbacks->einfo
9055 /* xgettext:c-format */
9056 (_("%P: %B: the target (%s) of a %s relocation is "
9057 "in the wrong output section (%s)\n"),
9058 input_bfd,
9059 sym_name,
9060 howto->name,
9061 name);
9062 }
9063 }
9064 break;
9065
9066 /* Relocate against _SDA2_BASE_. */
9067 case R_PPC_EMB_SDA2REL:
9068 {
9069 const char *name;
9070 struct elf_link_hash_entry *sda = htab->sdata[1].sym;
9071
9072 if (sec == NULL
9073 || sec->output_section == NULL
9074 || !is_static_defined (sda))
9075 {
9076 unresolved_reloc = TRUE;
9077 break;
9078 }
9079 addend -= SYM_VAL (sda);
9080
9081 name = bfd_get_section_name (output_bfd, sec->output_section);
9082 if (!(strcmp (name, ".sdata2") == 0
9083 || strcmp (name, ".sbss2") == 0))
9084 {
9085 info->callbacks->einfo
9086 /* xgettext:c-format */
9087 (_("%P: %B: the target (%s) of a %s relocation is "
9088 "in the wrong output section (%s)\n"),
9089 input_bfd,
9090 sym_name,
9091 howto->name,
9092 name);
9093 }
9094 }
9095 break;
9096
9097 case R_PPC_VLE_LO16A:
9098 relocation = relocation + addend;
9099 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9100 contents + rel->r_offset, relocation,
9101 split16a_type, htab->params->vle_reloc_fixup);
9102 goto copy_reloc;
9103
9104 case R_PPC_VLE_LO16D:
9105 relocation = relocation + addend;
9106 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9107 contents + rel->r_offset, relocation,
9108 split16d_type, htab->params->vle_reloc_fixup);
9109 goto copy_reloc;
9110
9111 case R_PPC_VLE_HI16A:
9112 relocation = (relocation + addend) >> 16;
9113 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9114 contents + rel->r_offset, relocation,
9115 split16a_type, htab->params->vle_reloc_fixup);
9116 goto copy_reloc;
9117
9118 case R_PPC_VLE_HI16D:
9119 relocation = (relocation + addend) >> 16;
9120 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9121 contents + rel->r_offset, relocation,
9122 split16d_type, htab->params->vle_reloc_fixup);
9123 goto copy_reloc;
9124
9125 case R_PPC_VLE_HA16A:
9126 relocation = (relocation + addend + 0x8000) >> 16;
9127 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9128 contents + rel->r_offset, relocation,
9129 split16a_type, htab->params->vle_reloc_fixup);
9130 goto copy_reloc;
9131
9132 case R_PPC_VLE_HA16D:
9133 relocation = (relocation + addend + 0x8000) >> 16;
9134 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9135 contents + rel->r_offset, relocation,
9136 split16d_type, htab->params->vle_reloc_fixup);
9137 goto copy_reloc;
9138
9139 /* Relocate against either _SDA_BASE_, _SDA2_BASE_, or 0. */
9140 case R_PPC_EMB_SDA21:
9141 case R_PPC_VLE_SDA21:
9142 case R_PPC_EMB_RELSDA:
9143 case R_PPC_VLE_SDA21_LO:
9144 {
9145 const char *name;
9146 int reg;
9147 unsigned int insn;
9148 struct elf_link_hash_entry *sda = NULL;
9149
9150 if (sec == NULL || sec->output_section == NULL)
9151 {
9152 unresolved_reloc = TRUE;
9153 break;
9154 }
9155
9156 name = bfd_get_section_name (output_bfd, sec->output_section);
9157 if (strcmp (name, ".sdata") == 0
9158 || strcmp (name, ".sbss") == 0)
9159 {
9160 reg = 13;
9161 sda = htab->sdata[0].sym;
9162 }
9163 else if (strcmp (name, ".sdata2") == 0
9164 || strcmp (name, ".sbss2") == 0)
9165 {
9166 reg = 2;
9167 sda = htab->sdata[1].sym;
9168 }
9169 else if (strcmp (name, ".PPC.EMB.sdata0") == 0
9170 || strcmp (name, ".PPC.EMB.sbss0") == 0)
9171 {
9172 reg = 0;
9173 }
9174 else
9175 {
9176 info->callbacks->einfo
9177 /* xgettext:c-format */
9178 (_("%P: %B: the target (%s) of a %s relocation is "
9179 "in the wrong output section (%s)\n"),
9180 input_bfd,
9181 sym_name,
9182 howto->name,
9183 name);
9184
9185 bfd_set_error (bfd_error_bad_value);
9186 ret = FALSE;
9187 goto copy_reloc;
9188 }
9189
9190 if (sda != NULL)
9191 {
9192 if (!is_static_defined (sda))
9193 {
9194 unresolved_reloc = TRUE;
9195 break;
9196 }
9197 addend -= SYM_VAL (sda);
9198 }
9199
9200 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
9201 if (reg == 0
9202 && (r_type == R_PPC_VLE_SDA21
9203 || r_type == R_PPC_VLE_SDA21_LO))
9204 {
9205 relocation = relocation + addend;
9206 addend = 0;
9207
9208 /* Force e_li insn, keeping RT from original insn. */
9209 insn &= 0x1f << 21;
9210 insn |= 28u << 26;
9211
9212 /* We have an li20 field, bits 17..20, 11..15, 21..31. */
9213 /* Top 4 bits of value to 17..20. */
9214 insn |= (relocation & 0xf0000) >> 5;
9215 /* Next 5 bits of the value to 11..15. */
9216 insn |= (relocation & 0xf800) << 5;
9217 /* And the final 11 bits of the value to bits 21 to 31. */
9218 insn |= relocation & 0x7ff;
9219
9220 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
9221
9222 if (r_type == R_PPC_VLE_SDA21
9223 && ((relocation + 0x80000) & 0xffffffff) > 0x100000)
9224 goto overflow;
9225 goto copy_reloc;
9226 }
9227 else if (r_type == R_PPC_EMB_SDA21
9228 || r_type == R_PPC_VLE_SDA21
9229 || r_type == R_PPC_VLE_SDA21_LO)
9230 {
9231 /* Fill in register field. */
9232 insn = (insn & ~RA_REGISTER_MASK) | (reg << RA_REGISTER_SHIFT);
9233 }
9234 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
9235 }
9236 break;
9237
9238 case R_PPC_VLE_SDAREL_LO16A:
9239 case R_PPC_VLE_SDAREL_LO16D:
9240 case R_PPC_VLE_SDAREL_HI16A:
9241 case R_PPC_VLE_SDAREL_HI16D:
9242 case R_PPC_VLE_SDAREL_HA16A:
9243 case R_PPC_VLE_SDAREL_HA16D:
9244 {
9245 bfd_vma value;
9246 const char *name;
9247 struct elf_link_hash_entry *sda = NULL;
9248
9249 if (sec == NULL || sec->output_section == NULL)
9250 {
9251 unresolved_reloc = TRUE;
9252 break;
9253 }
9254
9255 name = bfd_get_section_name (output_bfd, sec->output_section);
9256 if (strcmp (name, ".sdata") == 0
9257 || strcmp (name, ".sbss") == 0)
9258 sda = htab->sdata[0].sym;
9259 else if (strcmp (name, ".sdata2") == 0
9260 || strcmp (name, ".sbss2") == 0)
9261 sda = htab->sdata[1].sym;
9262 else
9263 {
9264 _bfd_error_handler
9265 /* xgettext:c-format */
9266 (_("%B: the target (%s) of a %s relocation is "
9267 "in the wrong output section (%s)"),
9268 input_bfd,
9269 sym_name,
9270 howto->name,
9271 name);
9272
9273 bfd_set_error (bfd_error_bad_value);
9274 ret = FALSE;
9275 goto copy_reloc;
9276 }
9277
9278 if (sda == NULL || !is_static_defined (sda))
9279 {
9280 unresolved_reloc = TRUE;
9281 break;
9282 }
9283 value = relocation + addend - SYM_VAL (sda);
9284
9285 if (r_type == R_PPC_VLE_SDAREL_LO16A)
9286 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9287 contents + rel->r_offset, value,
9288 split16a_type,
9289 htab->params->vle_reloc_fixup);
9290 else if (r_type == R_PPC_VLE_SDAREL_LO16D)
9291 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9292 contents + rel->r_offset, value,
9293 split16d_type,
9294 htab->params->vle_reloc_fixup);
9295 else if (r_type == R_PPC_VLE_SDAREL_HI16A)
9296 {
9297 value = value >> 16;
9298 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9299 contents + rel->r_offset, value,
9300 split16a_type,
9301 htab->params->vle_reloc_fixup);
9302 }
9303 else if (r_type == R_PPC_VLE_SDAREL_HI16D)
9304 {
9305 value = value >> 16;
9306 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9307 contents + rel->r_offset, value,
9308 split16d_type,
9309 htab->params->vle_reloc_fixup);
9310 }
9311 else if (r_type == R_PPC_VLE_SDAREL_HA16A)
9312 {
9313 value = (value + 0x8000) >> 16;
9314 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9315 contents + rel->r_offset, value,
9316 split16a_type,
9317 htab->params->vle_reloc_fixup);
9318 }
9319 else if (r_type == R_PPC_VLE_SDAREL_HA16D)
9320 {
9321 value = (value + 0x8000) >> 16;
9322 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9323 contents + rel->r_offset, value,
9324 split16d_type,
9325 htab->params->vle_reloc_fixup);
9326 }
9327 }
9328 goto copy_reloc;
9329
9330 case R_PPC_VLE_ADDR20:
9331 ppc_elf_vle_split20 (output_bfd, contents + rel->r_offset, relocation);
9332 continue;
9333
9334 /* Relocate against the beginning of the section. */
9335 case R_PPC_SECTOFF:
9336 case R_PPC_SECTOFF_LO:
9337 case R_PPC_SECTOFF_HI:
9338 case R_PPC_SECTOFF_HA:
9339 if (sec == NULL || sec->output_section == NULL)
9340 {
9341 unresolved_reloc = TRUE;
9342 break;
9343 }
9344 addend -= sec->output_section->vma;
9345 break;
9346
9347 /* Negative relocations. */
9348 case R_PPC_EMB_NADDR32:
9349 case R_PPC_EMB_NADDR16:
9350 case R_PPC_EMB_NADDR16_LO:
9351 case R_PPC_EMB_NADDR16_HI:
9352 case R_PPC_EMB_NADDR16_HA:
9353 addend -= 2 * relocation;
9354 break;
9355
9356 case R_PPC_COPY:
9357 case R_PPC_GLOB_DAT:
9358 case R_PPC_JMP_SLOT:
9359 case R_PPC_RELATIVE:
9360 case R_PPC_IRELATIVE:
9361 case R_PPC_PLT32:
9362 case R_PPC_PLTREL32:
9363 case R_PPC_PLT16_LO:
9364 case R_PPC_PLT16_HI:
9365 case R_PPC_PLT16_HA:
9366 case R_PPC_ADDR30:
9367 case R_PPC_EMB_RELSEC16:
9368 case R_PPC_EMB_RELST_LO:
9369 case R_PPC_EMB_RELST_HI:
9370 case R_PPC_EMB_RELST_HA:
9371 case R_PPC_EMB_BIT_FLD:
9372 info->callbacks->einfo
9373 /* xgettext:c-format */
9374 (_("%P: %B: relocation %s is not yet supported for symbol %s\n"),
9375 input_bfd,
9376 howto->name,
9377 sym_name);
9378
9379 bfd_set_error (bfd_error_invalid_operation);
9380 ret = FALSE;
9381 goto copy_reloc;
9382 }
9383
9384 /* Do any further special processing. */
9385 switch (r_type)
9386 {
9387 default:
9388 break;
9389
9390 case R_PPC_ADDR16_HA:
9391 case R_PPC_REL16_HA:
9392 case R_PPC_REL16DX_HA:
9393 case R_PPC_SECTOFF_HA:
9394 case R_PPC_TPREL16_HA:
9395 case R_PPC_DTPREL16_HA:
9396 case R_PPC_EMB_NADDR16_HA:
9397 case R_PPC_EMB_RELST_HA:
9398 /* It's just possible that this symbol is a weak symbol
9399 that's not actually defined anywhere. In that case,
9400 'sec' would be NULL, and we should leave the symbol
9401 alone (it will be set to zero elsewhere in the link). */
9402 if (sec == NULL)
9403 break;
9404 /* Fall through. */
9405
9406 case R_PPC_PLT16_HA:
9407 case R_PPC_GOT16_HA:
9408 case R_PPC_GOT_TLSGD16_HA:
9409 case R_PPC_GOT_TLSLD16_HA:
9410 case R_PPC_GOT_TPREL16_HA:
9411 case R_PPC_GOT_DTPREL16_HA:
9412 /* Add 0x10000 if sign bit in 0:15 is set.
9413 Bits 0:15 are not used. */
9414 addend += 0x8000;
9415 break;
9416
9417 case R_PPC_ADDR16:
9418 case R_PPC_ADDR16_LO:
9419 case R_PPC_GOT16:
9420 case R_PPC_GOT16_LO:
9421 case R_PPC_SDAREL16:
9422 case R_PPC_SECTOFF:
9423 case R_PPC_SECTOFF_LO:
9424 case R_PPC_DTPREL16:
9425 case R_PPC_DTPREL16_LO:
9426 case R_PPC_TPREL16:
9427 case R_PPC_TPREL16_LO:
9428 case R_PPC_GOT_TLSGD16:
9429 case R_PPC_GOT_TLSGD16_LO:
9430 case R_PPC_GOT_TLSLD16:
9431 case R_PPC_GOT_TLSLD16_LO:
9432 case R_PPC_GOT_DTPREL16:
9433 case R_PPC_GOT_DTPREL16_LO:
9434 case R_PPC_GOT_TPREL16:
9435 case R_PPC_GOT_TPREL16_LO:
9436 {
9437 /* The 32-bit ABI lacks proper relocations to deal with
9438 certain 64-bit instructions. Prevent damage to bits
9439 that make up part of the insn opcode. */
9440 unsigned int insn, mask, lobit;
9441
9442 insn = bfd_get_32 (input_bfd,
9443 contents + rel->r_offset - d_offset);
9444 mask = 0;
9445 if (is_insn_ds_form (insn))
9446 mask = 3;
9447 else if (is_insn_dq_form (insn))
9448 mask = 15;
9449 else
9450 break;
9451 relocation += addend;
9452 addend = insn & mask;
9453 lobit = mask & relocation;
9454 if (lobit != 0)
9455 {
9456 relocation ^= lobit;
9457 info->callbacks->einfo
9458 /* xgettext:c-format */
9459 (_("%H: error: %s against `%s' not a multiple of %u\n"),
9460 input_bfd, input_section, rel->r_offset,
9461 howto->name, sym_name, mask + 1);
9462 bfd_set_error (bfd_error_bad_value);
9463 ret = FALSE;
9464 }
9465 }
9466 break;
9467 }
9468
9469 #ifdef DEBUG
9470 fprintf (stderr, "\ttype = %s (%d), name = %s, symbol index = %ld, "
9471 "offset = %ld, addend = %ld\n",
9472 howto->name,
9473 (int) r_type,
9474 sym_name,
9475 r_symndx,
9476 (long) rel->r_offset,
9477 (long) addend);
9478 #endif
9479
9480 if (unresolved_reloc
9481 && !((input_section->flags & SEC_DEBUGGING) != 0
9482 && h->def_dynamic)
9483 && _bfd_elf_section_offset (output_bfd, info, input_section,
9484 rel->r_offset) != (bfd_vma) -1)
9485 {
9486 info->callbacks->einfo
9487 /* xgettext:c-format */
9488 (_("%H: unresolvable %s relocation against symbol `%s'\n"),
9489 input_bfd, input_section, rel->r_offset,
9490 howto->name,
9491 sym_name);
9492 ret = FALSE;
9493 }
9494
9495 /* 16-bit fields in insns mostly have signed values, but a
9496 few insns have 16-bit unsigned values. Really, we should
9497 have different reloc types. */
9498 if (howto->complain_on_overflow != complain_overflow_dont
9499 && howto->dst_mask == 0xffff
9500 && (input_section->flags & SEC_CODE) != 0)
9501 {
9502 enum complain_overflow complain = complain_overflow_signed;
9503
9504 if ((elf_section_flags (input_section) & SHF_PPC_VLE) == 0)
9505 {
9506 unsigned int insn;
9507
9508 insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
9509 if ((insn & (0x3f << 26)) == 10u << 26 /* cmpli */)
9510 complain = complain_overflow_bitfield;
9511 else if ((insn & (0x3f << 26)) == 28u << 26 /* andi */
9512 || (insn & (0x3f << 26)) == 24u << 26 /* ori */
9513 || (insn & (0x3f << 26)) == 26u << 26 /* xori */)
9514 complain = complain_overflow_unsigned;
9515 }
9516 if (howto->complain_on_overflow != complain)
9517 {
9518 alt_howto = *howto;
9519 alt_howto.complain_on_overflow = complain;
9520 howto = &alt_howto;
9521 }
9522 }
9523
9524 if (r_type == R_PPC_REL16DX_HA)
9525 {
9526 /* Split field reloc isn't handled by _bfd_final_link_relocate. */
9527 if (rel->r_offset + 4 > input_section->size)
9528 r = bfd_reloc_outofrange;
9529 else
9530 {
9531 unsigned int insn;
9532
9533 relocation += addend;
9534 relocation -= (rel->r_offset
9535 + input_section->output_offset
9536 + input_section->output_section->vma);
9537 relocation >>= 16;
9538 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
9539 insn &= ~0x1fffc1;
9540 insn |= (relocation & 0xffc1) | ((relocation & 0x3e) << 15);
9541 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
9542 r = bfd_reloc_ok;
9543 }
9544 }
9545 else
9546 r = _bfd_final_link_relocate (howto, input_bfd, input_section, contents,
9547 rel->r_offset, relocation, addend);
9548
9549 if (r != bfd_reloc_ok)
9550 {
9551 if (r == bfd_reloc_overflow)
9552 {
9553 overflow:
9554 /* On code like "if (foo) foo();" don't report overflow
9555 on a branch to zero when foo is undefined. */
9556 if (!warned
9557 && !(h != NULL
9558 && (h->root.type == bfd_link_hash_undefweak
9559 || h->root.type == bfd_link_hash_undefined)
9560 && is_branch_reloc (r_type)))
9561 info->callbacks->reloc_overflow
9562 (info, (h ? &h->root : NULL), sym_name, howto->name,
9563 rel->r_addend, input_bfd, input_section, rel->r_offset);
9564 }
9565 else
9566 {
9567 info->callbacks->einfo
9568 /* xgettext:c-format */
9569 (_("%H: %s reloc against `%s': error %d\n"),
9570 input_bfd, input_section, rel->r_offset,
9571 howto->name, sym_name, (int) r);
9572 ret = FALSE;
9573 }
9574 }
9575 copy_reloc:
9576 if (wrel != rel)
9577 *wrel = *rel;
9578 }
9579
9580 if (wrel != rel)
9581 {
9582 Elf_Internal_Shdr *rel_hdr;
9583 size_t deleted = rel - wrel;
9584
9585 rel_hdr = _bfd_elf_single_rel_hdr (input_section->output_section);
9586 rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted;
9587 if (rel_hdr->sh_size == 0)
9588 {
9589 /* It is too late to remove an empty reloc section. Leave
9590 one NONE reloc.
9591 ??? What is wrong with an empty section??? */
9592 rel_hdr->sh_size = rel_hdr->sh_entsize;
9593 deleted -= 1;
9594 wrel++;
9595 }
9596 relend = wrel;
9597 rel_hdr = _bfd_elf_single_rel_hdr (input_section);
9598 rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted;
9599 input_section->reloc_count -= deleted;
9600 }
9601
9602 #ifdef DEBUG
9603 fprintf (stderr, "\n");
9604 #endif
9605
9606 if (input_section->sec_info_type == SEC_INFO_TYPE_TARGET
9607 && input_section->size != input_section->rawsize
9608 && (strcmp (input_section->output_section->name, ".init") == 0
9609 || strcmp (input_section->output_section->name, ".fini") == 0))
9610 {
9611 /* Branch around the trampolines. */
9612 unsigned int insn = B + input_section->size - input_section->rawsize;
9613 bfd_put_32 (input_bfd, insn, contents + input_section->rawsize);
9614 }
9615
9616 if (htab->params->ppc476_workaround
9617 && input_section->sec_info_type == SEC_INFO_TYPE_TARGET
9618 && (!bfd_link_relocatable (info)
9619 || (input_section->output_section->alignment_power
9620 >= htab->params->pagesize_p2)))
9621 {
9622 bfd_vma start_addr, end_addr, addr;
9623 bfd_vma pagesize = (bfd_vma) 1 << htab->params->pagesize_p2;
9624
9625 if (relax_info->workaround_size != 0)
9626 {
9627 bfd_byte *p;
9628 unsigned int n;
9629 bfd_byte fill[4];
9630
9631 bfd_put_32 (input_bfd, BA, fill);
9632 p = contents + input_section->size - relax_info->workaround_size;
9633 n = relax_info->workaround_size >> 2;
9634 while (n--)
9635 {
9636 memcpy (p, fill, 4);
9637 p += 4;
9638 }
9639 }
9640
9641 /* The idea is: Replace the last instruction on a page with a
9642 branch to a patch area. Put the insn there followed by a
9643 branch back to the next page. Complicated a little by
9644 needing to handle moved conditional branches, and by not
9645 wanting to touch data-in-text. */
9646
9647 start_addr = (input_section->output_section->vma
9648 + input_section->output_offset);
9649 end_addr = (start_addr + input_section->size
9650 - relax_info->workaround_size);
9651 for (addr = ((start_addr & -pagesize) + pagesize - 4);
9652 addr < end_addr;
9653 addr += pagesize)
9654 {
9655 bfd_vma offset = addr - start_addr;
9656 Elf_Internal_Rela *lo, *hi;
9657 bfd_boolean is_data;
9658 bfd_vma patch_off, patch_addr;
9659 unsigned int insn;
9660
9661 /* Do we have a data reloc at this offset? If so, leave
9662 the word alone. */
9663 is_data = FALSE;
9664 lo = relocs;
9665 hi = relend;
9666 rel = NULL;
9667 while (lo < hi)
9668 {
9669 rel = lo + (hi - lo) / 2;
9670 if (rel->r_offset < offset)
9671 lo = rel + 1;
9672 else if (rel->r_offset > offset + 3)
9673 hi = rel;
9674 else
9675 {
9676 switch (ELF32_R_TYPE (rel->r_info))
9677 {
9678 case R_PPC_ADDR32:
9679 case R_PPC_UADDR32:
9680 case R_PPC_REL32:
9681 case R_PPC_ADDR30:
9682 is_data = TRUE;
9683 break;
9684 default:
9685 break;
9686 }
9687 break;
9688 }
9689 }
9690 if (is_data)
9691 continue;
9692
9693 /* Some instructions can be left alone too. Unconditional
9694 branches, except for bcctr with BO=0x14 (bctr, bctrl),
9695 avoid the icache failure.
9696
9697 The problem occurs due to prefetch across a page boundary
9698 where stale instructions can be fetched from the next
9699 page, and the mechanism for flushing these bad
9700 instructions fails under certain circumstances. The
9701 unconditional branches:
9702 1) Branch: b, bl, ba, bla,
9703 2) Branch Conditional: bc, bca, bcl, bcla,
9704 3) Branch Conditional to Link Register: bclr, bclrl,
9705 where (2) and (3) have BO=0x14 making them unconditional,
9706 prevent the bad prefetch because the prefetch itself is
9707 affected by these instructions. This happens even if the
9708 instruction is not executed.
9709
9710 A bctr example:
9711 .
9712 . lis 9,new_page@ha
9713 . addi 9,9,new_page@l
9714 . mtctr 9
9715 . bctr
9716 . nop
9717 . nop
9718 . new_page:
9719 .
9720 The bctr is not predicted taken due to ctr not being
9721 ready, so prefetch continues on past the bctr into the
9722 new page which might have stale instructions. If they
9723 fail to be flushed, then they will be executed after the
9724 bctr executes. Either of the following modifications
9725 prevent the bad prefetch from happening in the first
9726 place:
9727 .
9728 . lis 9,new_page@ha lis 9,new_page@ha
9729 . addi 9,9,new_page@l addi 9,9,new_page@l
9730 . mtctr 9 mtctr 9
9731 . bctr bctr
9732 . nop b somewhere_else
9733 . b somewhere_else nop
9734 . new_page: new_page:
9735 . */
9736 insn = bfd_get_32 (input_bfd, contents + offset);
9737 if ((insn & (0x3f << 26)) == (18u << 26) /* b,bl,ba,bla */
9738 || ((insn & (0x3f << 26)) == (16u << 26) /* bc,bcl,bca,bcla*/
9739 && (insn & (0x14 << 21)) == (0x14 << 21)) /* with BO=0x14 */
9740 || ((insn & (0x3f << 26)) == (19u << 26)
9741 && (insn & (0x3ff << 1)) == (16u << 1) /* bclr,bclrl */
9742 && (insn & (0x14 << 21)) == (0x14 << 21)))/* with BO=0x14 */
9743 continue;
9744
9745 patch_addr = (start_addr + input_section->size
9746 - relax_info->workaround_size);
9747 patch_addr = (patch_addr + 15) & -16;
9748 patch_off = patch_addr - start_addr;
9749 bfd_put_32 (input_bfd, B + patch_off - offset, contents + offset);
9750
9751 if (rel != NULL
9752 && rel->r_offset >= offset
9753 && rel->r_offset < offset + 4)
9754 {
9755 asection *sreloc;
9756
9757 /* If the insn we are patching had a reloc, adjust the
9758 reloc r_offset so that the reloc applies to the moved
9759 location. This matters for -r and --emit-relocs. */
9760 if (rel + 1 != relend)
9761 {
9762 Elf_Internal_Rela tmp = *rel;
9763
9764 /* Keep the relocs sorted by r_offset. */
9765 memmove (rel, rel + 1, (relend - (rel + 1)) * sizeof (*rel));
9766 relend[-1] = tmp;
9767 }
9768 relend[-1].r_offset += patch_off - offset;
9769
9770 /* Adjust REL16 addends too. */
9771 switch (ELF32_R_TYPE (relend[-1].r_info))
9772 {
9773 case R_PPC_REL16:
9774 case R_PPC_REL16_LO:
9775 case R_PPC_REL16_HI:
9776 case R_PPC_REL16_HA:
9777 relend[-1].r_addend += patch_off - offset;
9778 break;
9779 default:
9780 break;
9781 }
9782
9783 /* If we are building a PIE or shared library with
9784 non-PIC objects, perhaps we had a dynamic reloc too?
9785 If so, the dynamic reloc must move with the insn. */
9786 sreloc = elf_section_data (input_section)->sreloc;
9787 if (sreloc != NULL)
9788 {
9789 Elf32_External_Rela *slo, *shi, *srelend;
9790 bfd_vma soffset;
9791
9792 slo = (Elf32_External_Rela *) sreloc->contents;
9793 shi = srelend = slo + sreloc->reloc_count;
9794 soffset = (offset + input_section->output_section->vma
9795 + input_section->output_offset);
9796 while (slo < shi)
9797 {
9798 Elf32_External_Rela *srel = slo + (shi - slo) / 2;
9799 bfd_elf32_swap_reloca_in (output_bfd, (bfd_byte *) srel,
9800 &outrel);
9801 if (outrel.r_offset < soffset)
9802 slo = srel + 1;
9803 else if (outrel.r_offset > soffset + 3)
9804 shi = srel;
9805 else
9806 {
9807 if (srel + 1 != srelend)
9808 {
9809 memmove (srel, srel + 1,
9810 (srelend - (srel + 1)) * sizeof (*srel));
9811 srel = srelend - 1;
9812 }
9813 outrel.r_offset += patch_off - offset;
9814 bfd_elf32_swap_reloca_out (output_bfd, &outrel,
9815 (bfd_byte *) srel);
9816 break;
9817 }
9818 }
9819 }
9820 }
9821 else
9822 rel = NULL;
9823
9824 if ((insn & (0x3f << 26)) == (16u << 26) /* bc */
9825 && (insn & 2) == 0 /* relative */)
9826 {
9827 bfd_vma delta = ((insn & 0xfffc) ^ 0x8000) - 0x8000;
9828
9829 delta += offset - patch_off;
9830 if (bfd_link_relocatable (info) && rel != NULL)
9831 delta = 0;
9832 if (!bfd_link_relocatable (info) && rel != NULL)
9833 {
9834 enum elf_ppc_reloc_type r_type;
9835
9836 r_type = ELF32_R_TYPE (relend[-1].r_info);
9837 if (r_type == R_PPC_REL14_BRTAKEN)
9838 insn |= BRANCH_PREDICT_BIT;
9839 else if (r_type == R_PPC_REL14_BRNTAKEN)
9840 insn &= ~BRANCH_PREDICT_BIT;
9841 else
9842 BFD_ASSERT (r_type == R_PPC_REL14);
9843
9844 if ((r_type == R_PPC_REL14_BRTAKEN
9845 || r_type == R_PPC_REL14_BRNTAKEN)
9846 && delta + 0x8000 < 0x10000
9847 && (bfd_signed_vma) delta < 0)
9848 insn ^= BRANCH_PREDICT_BIT;
9849 }
9850 if (delta + 0x8000 < 0x10000)
9851 {
9852 bfd_put_32 (input_bfd,
9853 (insn & ~0xfffc) | (delta & 0xfffc),
9854 contents + patch_off);
9855 patch_off += 4;
9856 bfd_put_32 (input_bfd,
9857 B | ((offset + 4 - patch_off) & 0x3fffffc),
9858 contents + patch_off);
9859 patch_off += 4;
9860 }
9861 else
9862 {
9863 if (rel != NULL)
9864 {
9865 unsigned int r_sym = ELF32_R_SYM (relend[-1].r_info);
9866
9867 relend[-1].r_offset += 8;
9868 relend[-1].r_info = ELF32_R_INFO (r_sym, R_PPC_REL24);
9869 }
9870 bfd_put_32 (input_bfd,
9871 (insn & ~0xfffc) | 8,
9872 contents + patch_off);
9873 patch_off += 4;
9874 bfd_put_32 (input_bfd,
9875 B | ((offset + 4 - patch_off) & 0x3fffffc),
9876 contents + patch_off);
9877 patch_off += 4;
9878 bfd_put_32 (input_bfd,
9879 B | ((delta - 8) & 0x3fffffc),
9880 contents + patch_off);
9881 patch_off += 4;
9882 }
9883 }
9884 else
9885 {
9886 bfd_put_32 (input_bfd, insn, contents + patch_off);
9887 patch_off += 4;
9888 bfd_put_32 (input_bfd,
9889 B | ((offset + 4 - patch_off) & 0x3fffffc),
9890 contents + patch_off);
9891 patch_off += 4;
9892 }
9893 BFD_ASSERT (patch_off <= input_section->size);
9894 relax_info->workaround_size = input_section->size - patch_off;
9895 }
9896 }
9897
9898 return ret;
9899 }
9900 \f
9901 /* Finish up dynamic symbol handling. We set the contents of various
9902 dynamic sections here. */
9903
9904 static bfd_boolean
9905 ppc_elf_finish_dynamic_symbol (bfd *output_bfd,
9906 struct bfd_link_info *info,
9907 struct elf_link_hash_entry *h,
9908 Elf_Internal_Sym *sym)
9909 {
9910 struct ppc_elf_link_hash_table *htab;
9911 struct plt_entry *ent;
9912 bfd_boolean doneone;
9913
9914 #ifdef DEBUG
9915 fprintf (stderr, "ppc_elf_finish_dynamic_symbol called for %s",
9916 h->root.root.string);
9917 #endif
9918
9919 htab = ppc_elf_hash_table (info);
9920 BFD_ASSERT (htab->elf.dynobj != NULL);
9921
9922 doneone = FALSE;
9923 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
9924 if (ent->plt.offset != (bfd_vma) -1)
9925 {
9926 if (!doneone)
9927 {
9928 Elf_Internal_Rela rela;
9929 bfd_byte *loc;
9930 bfd_vma reloc_index;
9931
9932 if (htab->plt_type == PLT_NEW
9933 || !htab->elf.dynamic_sections_created
9934 || h->dynindx == -1)
9935 reloc_index = ent->plt.offset / 4;
9936 else
9937 {
9938 reloc_index = ((ent->plt.offset - htab->plt_initial_entry_size)
9939 / htab->plt_slot_size);
9940 if (reloc_index > PLT_NUM_SINGLE_ENTRIES
9941 && htab->plt_type == PLT_OLD)
9942 reloc_index -= (reloc_index - PLT_NUM_SINGLE_ENTRIES) / 2;
9943 }
9944
9945 /* This symbol has an entry in the procedure linkage table.
9946 Set it up. */
9947 if (htab->plt_type == PLT_VXWORKS
9948 && htab->elf.dynamic_sections_created
9949 && h->dynindx != -1)
9950 {
9951 bfd_vma got_offset;
9952 const bfd_vma *plt_entry;
9953
9954 /* The first three entries in .got.plt are reserved. */
9955 got_offset = (reloc_index + 3) * 4;
9956
9957 /* Use the right PLT. */
9958 plt_entry = bfd_link_pic (info) ? ppc_elf_vxworks_pic_plt_entry
9959 : ppc_elf_vxworks_plt_entry;
9960
9961 /* Fill in the .plt on VxWorks. */
9962 if (bfd_link_pic (info))
9963 {
9964 bfd_put_32 (output_bfd,
9965 plt_entry[0] | PPC_HA (got_offset),
9966 htab->elf.splt->contents + ent->plt.offset + 0);
9967 bfd_put_32 (output_bfd,
9968 plt_entry[1] | PPC_LO (got_offset),
9969 htab->elf.splt->contents + ent->plt.offset + 4);
9970 }
9971 else
9972 {
9973 bfd_vma got_loc = got_offset + SYM_VAL (htab->elf.hgot);
9974
9975 bfd_put_32 (output_bfd,
9976 plt_entry[0] | PPC_HA (got_loc),
9977 htab->elf.splt->contents + ent->plt.offset + 0);
9978 bfd_put_32 (output_bfd,
9979 plt_entry[1] | PPC_LO (got_loc),
9980 htab->elf.splt->contents + ent->plt.offset + 4);
9981 }
9982
9983 bfd_put_32 (output_bfd, plt_entry[2],
9984 htab->elf.splt->contents + ent->plt.offset + 8);
9985 bfd_put_32 (output_bfd, plt_entry[3],
9986 htab->elf.splt->contents + ent->plt.offset + 12);
9987
9988 /* This instruction is an immediate load. The value loaded is
9989 the byte offset of the R_PPC_JMP_SLOT relocation from the
9990 start of the .rela.plt section. The value is stored in the
9991 low-order 16 bits of the load instruction. */
9992 /* NOTE: It appears that this is now an index rather than a
9993 prescaled offset. */
9994 bfd_put_32 (output_bfd,
9995 plt_entry[4] | reloc_index,
9996 htab->elf.splt->contents + ent->plt.offset + 16);
9997 /* This instruction is a PC-relative branch whose target is
9998 the start of the PLT section. The address of this branch
9999 instruction is 20 bytes beyond the start of this PLT entry.
10000 The address is encoded in bits 6-29, inclusive. The value
10001 stored is right-shifted by two bits, permitting a 26-bit
10002 offset. */
10003 bfd_put_32 (output_bfd,
10004 (plt_entry[5]
10005 | (-(ent->plt.offset + 20) & 0x03fffffc)),
10006 htab->elf.splt->contents + ent->plt.offset + 20);
10007 bfd_put_32 (output_bfd, plt_entry[6],
10008 htab->elf.splt->contents + ent->plt.offset + 24);
10009 bfd_put_32 (output_bfd, plt_entry[7],
10010 htab->elf.splt->contents + ent->plt.offset + 28);
10011
10012 /* Fill in the GOT entry corresponding to this PLT slot with
10013 the address immediately after the "bctr" instruction
10014 in this PLT entry. */
10015 bfd_put_32 (output_bfd, (htab->elf.splt->output_section->vma
10016 + htab->elf.splt->output_offset
10017 + ent->plt.offset + 16),
10018 htab->elf.sgotplt->contents + got_offset);
10019
10020 if (!bfd_link_pic (info))
10021 {
10022 /* Fill in a couple of entries in .rela.plt.unloaded. */
10023 loc = htab->srelplt2->contents
10024 + ((VXWORKS_PLTRESOLVE_RELOCS + reloc_index
10025 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS)
10026 * sizeof (Elf32_External_Rela));
10027
10028 /* Provide the @ha relocation for the first instruction. */
10029 rela.r_offset = (htab->elf.splt->output_section->vma
10030 + htab->elf.splt->output_offset
10031 + ent->plt.offset + 2);
10032 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
10033 R_PPC_ADDR16_HA);
10034 rela.r_addend = got_offset;
10035 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10036 loc += sizeof (Elf32_External_Rela);
10037
10038 /* Provide the @l relocation for the second instruction. */
10039 rela.r_offset = (htab->elf.splt->output_section->vma
10040 + htab->elf.splt->output_offset
10041 + ent->plt.offset + 6);
10042 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
10043 R_PPC_ADDR16_LO);
10044 rela.r_addend = got_offset;
10045 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10046 loc += sizeof (Elf32_External_Rela);
10047
10048 /* Provide a relocation for the GOT entry corresponding to this
10049 PLT slot. Point it at the middle of the .plt entry. */
10050 rela.r_offset = (htab->elf.sgotplt->output_section->vma
10051 + htab->elf.sgotplt->output_offset
10052 + got_offset);
10053 rela.r_info = ELF32_R_INFO (htab->elf.hplt->indx,
10054 R_PPC_ADDR32);
10055 rela.r_addend = ent->plt.offset + 16;
10056 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10057 }
10058
10059 /* VxWorks uses non-standard semantics for R_PPC_JMP_SLOT.
10060 In particular, the offset for the relocation is not the
10061 address of the PLT entry for this function, as specified
10062 by the ABI. Instead, the offset is set to the address of
10063 the GOT slot for this function. See EABI 4.4.4.1. */
10064 rela.r_offset = (htab->elf.sgotplt->output_section->vma
10065 + htab->elf.sgotplt->output_offset
10066 + got_offset);
10067
10068 }
10069 else
10070 {
10071 asection *splt = htab->elf.splt;
10072 if (!htab->elf.dynamic_sections_created
10073 || h->dynindx == -1)
10074 splt = htab->elf.iplt;
10075
10076 rela.r_offset = (splt->output_section->vma
10077 + splt->output_offset
10078 + ent->plt.offset);
10079 if (htab->plt_type == PLT_OLD
10080 || !htab->elf.dynamic_sections_created
10081 || h->dynindx == -1)
10082 {
10083 /* We don't need to fill in the .plt. The ppc dynamic
10084 linker will fill it in. */
10085 }
10086 else
10087 {
10088 bfd_vma val = (htab->glink_pltresolve + ent->plt.offset
10089 + htab->glink->output_section->vma
10090 + htab->glink->output_offset);
10091 bfd_put_32 (output_bfd, val,
10092 splt->contents + ent->plt.offset);
10093 }
10094 }
10095
10096 /* Fill in the entry in the .rela.plt section. */
10097 rela.r_addend = 0;
10098 if (!htab->elf.dynamic_sections_created
10099 || h->dynindx == -1)
10100 {
10101 BFD_ASSERT (h->type == STT_GNU_IFUNC
10102 && h->def_regular
10103 && (h->root.type == bfd_link_hash_defined
10104 || h->root.type == bfd_link_hash_defweak));
10105 rela.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
10106 rela.r_addend = SYM_VAL (h);
10107 }
10108 else
10109 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_JMP_SLOT);
10110
10111 if (!htab->elf.dynamic_sections_created
10112 || h->dynindx == -1)
10113 {
10114 loc = (htab->elf.irelplt->contents
10115 + (htab->elf.irelplt->reloc_count++
10116 * sizeof (Elf32_External_Rela)));
10117 htab->local_ifunc_resolver = 1;
10118 }
10119 else
10120 {
10121 loc = (htab->elf.srelplt->contents
10122 + reloc_index * sizeof (Elf32_External_Rela));
10123 if (h->type == STT_GNU_IFUNC && is_static_defined (h))
10124 htab->maybe_local_ifunc_resolver = 1;
10125 }
10126 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10127
10128 if (!h->def_regular)
10129 {
10130 /* Mark the symbol as undefined, rather than as
10131 defined in the .plt section. Leave the value if
10132 there were any relocations where pointer equality
10133 matters (this is a clue for the dynamic linker, to
10134 make function pointer comparisons work between an
10135 application and shared library), otherwise set it
10136 to zero. */
10137 sym->st_shndx = SHN_UNDEF;
10138 if (!h->pointer_equality_needed)
10139 sym->st_value = 0;
10140 else if (!h->ref_regular_nonweak)
10141 {
10142 /* This breaks function pointer comparisons, but
10143 that is better than breaking tests for a NULL
10144 function pointer. */
10145 sym->st_value = 0;
10146 }
10147 }
10148 else if (h->type == STT_GNU_IFUNC
10149 && !bfd_link_pic (info))
10150 {
10151 /* Set the value of ifunc symbols in a non-pie
10152 executable to the glink entry. This is to avoid
10153 text relocations. We can't do this for ifunc in
10154 allocate_dynrelocs, as we do for normal dynamic
10155 function symbols with plt entries, because we need
10156 to keep the original value around for the ifunc
10157 relocation. */
10158 sym->st_shndx = (_bfd_elf_section_from_bfd_section
10159 (output_bfd, htab->glink->output_section));
10160 sym->st_value = (ent->glink_offset
10161 + htab->glink->output_offset
10162 + htab->glink->output_section->vma);
10163 }
10164 doneone = TRUE;
10165 }
10166
10167 if (htab->plt_type == PLT_NEW
10168 || !htab->elf.dynamic_sections_created
10169 || h->dynindx == -1)
10170 {
10171 unsigned char *p;
10172 asection *splt = htab->elf.splt;
10173 if (!htab->elf.dynamic_sections_created
10174 || h->dynindx == -1)
10175 splt = htab->elf.iplt;
10176
10177 p = (unsigned char *) htab->glink->contents + ent->glink_offset;
10178
10179 if (h == htab->tls_get_addr && !htab->params->no_tls_get_addr_opt)
10180 {
10181 bfd_put_32 (output_bfd, LWZ_11_3, p);
10182 p += 4;
10183 bfd_put_32 (output_bfd, LWZ_12_3 + 4, p);
10184 p += 4;
10185 bfd_put_32 (output_bfd, MR_0_3, p);
10186 p += 4;
10187 bfd_put_32 (output_bfd, CMPWI_11_0, p);
10188 p += 4;
10189 bfd_put_32 (output_bfd, ADD_3_12_2, p);
10190 p += 4;
10191 bfd_put_32 (output_bfd, BEQLR, p);
10192 p += 4;
10193 bfd_put_32 (output_bfd, MR_3_0, p);
10194 p += 4;
10195 bfd_put_32 (output_bfd, NOP, p);
10196 p += 4;
10197 }
10198
10199 write_glink_stub (ent, splt, p, info);
10200
10201 if (!bfd_link_pic (info))
10202 /* We only need one non-PIC glink stub. */
10203 break;
10204 }
10205 else
10206 break;
10207 }
10208
10209 if (h->needs_copy)
10210 {
10211 asection *s;
10212 Elf_Internal_Rela rela;
10213 bfd_byte *loc;
10214
10215 /* This symbols needs a copy reloc. Set it up. */
10216
10217 #ifdef DEBUG
10218 fprintf (stderr, ", copy");
10219 #endif
10220
10221 BFD_ASSERT (h->dynindx != -1);
10222
10223 if (ppc_elf_hash_entry (h)->has_sda_refs)
10224 s = htab->relsbss;
10225 else if (h->root.u.def.section == htab->elf.sdynrelro)
10226 s = htab->elf.sreldynrelro;
10227 else
10228 s = htab->elf.srelbss;
10229 BFD_ASSERT (s != NULL);
10230
10231 rela.r_offset = SYM_VAL (h);
10232 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_COPY);
10233 rela.r_addend = 0;
10234 loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
10235 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10236 }
10237
10238 #ifdef DEBUG
10239 fprintf (stderr, "\n");
10240 #endif
10241
10242 return TRUE;
10243 }
10244 \f
10245 static enum elf_reloc_type_class
10246 ppc_elf_reloc_type_class (const struct bfd_link_info *info,
10247 const asection *rel_sec,
10248 const Elf_Internal_Rela *rela)
10249 {
10250 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
10251
10252 if (rel_sec == htab->elf.irelplt)
10253 return reloc_class_ifunc;
10254
10255 switch (ELF32_R_TYPE (rela->r_info))
10256 {
10257 case R_PPC_RELATIVE:
10258 return reloc_class_relative;
10259 case R_PPC_JMP_SLOT:
10260 return reloc_class_plt;
10261 case R_PPC_COPY:
10262 return reloc_class_copy;
10263 default:
10264 return reloc_class_normal;
10265 }
10266 }
10267 \f
10268 /* Finish up the dynamic sections. */
10269
10270 static bfd_boolean
10271 ppc_elf_finish_dynamic_sections (bfd *output_bfd,
10272 struct bfd_link_info *info)
10273 {
10274 asection *sdyn;
10275 struct ppc_elf_link_hash_table *htab;
10276 bfd_vma got;
10277 bfd *dynobj;
10278 bfd_boolean ret = TRUE;
10279
10280 #ifdef DEBUG
10281 fprintf (stderr, "ppc_elf_finish_dynamic_sections called\n");
10282 #endif
10283
10284 htab = ppc_elf_hash_table (info);
10285 dynobj = htab->elf.dynobj;
10286 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
10287
10288 got = 0;
10289 if (htab->elf.hgot != NULL)
10290 got = SYM_VAL (htab->elf.hgot);
10291
10292 if (htab->elf.dynamic_sections_created)
10293 {
10294 Elf32_External_Dyn *dyncon, *dynconend;
10295
10296 BFD_ASSERT (htab->elf.splt != NULL && sdyn != NULL);
10297
10298 dyncon = (Elf32_External_Dyn *) sdyn->contents;
10299 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
10300 for (; dyncon < dynconend; dyncon++)
10301 {
10302 Elf_Internal_Dyn dyn;
10303 asection *s;
10304
10305 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
10306
10307 switch (dyn.d_tag)
10308 {
10309 case DT_PLTGOT:
10310 if (htab->is_vxworks)
10311 s = htab->elf.sgotplt;
10312 else
10313 s = htab->elf.splt;
10314 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
10315 break;
10316
10317 case DT_PLTRELSZ:
10318 dyn.d_un.d_val = htab->elf.srelplt->size;
10319 break;
10320
10321 case DT_JMPREL:
10322 s = htab->elf.srelplt;
10323 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
10324 break;
10325
10326 case DT_PPC_GOT:
10327 dyn.d_un.d_ptr = got;
10328 break;
10329
10330 case DT_TEXTREL:
10331 if (htab->local_ifunc_resolver)
10332 info->callbacks->einfo
10333 (_("%X%P: text relocations and GNU indirect "
10334 "functions will result in a segfault at runtime\n"));
10335 else if (htab->maybe_local_ifunc_resolver)
10336 info->callbacks->einfo
10337 (_("%P: warning: text relocations and GNU indirect "
10338 "functions may result in a segfault at runtime\n"));
10339 continue;
10340
10341 default:
10342 if (htab->is_vxworks
10343 && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn))
10344 break;
10345 continue;
10346 }
10347
10348 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
10349 }
10350 }
10351
10352 if (htab->elf.sgot != NULL
10353 && htab->elf.sgot->output_section != bfd_abs_section_ptr)
10354 {
10355 if (htab->elf.hgot->root.u.def.section == htab->elf.sgot
10356 || htab->elf.hgot->root.u.def.section == htab->elf.sgotplt)
10357 {
10358 unsigned char *p = htab->elf.hgot->root.u.def.section->contents;
10359
10360 p += htab->elf.hgot->root.u.def.value;
10361 if (htab->plt_type == PLT_OLD)
10362 {
10363 /* Add a blrl instruction at _GLOBAL_OFFSET_TABLE_-4
10364 so that a function can easily find the address of
10365 _GLOBAL_OFFSET_TABLE_. */
10366 BFD_ASSERT (htab->elf.hgot->root.u.def.value - 4
10367 < htab->elf.hgot->root.u.def.section->size);
10368 bfd_put_32 (output_bfd, 0x4e800021, p - 4);
10369 }
10370
10371 if (sdyn != NULL)
10372 {
10373 bfd_vma val = sdyn->output_section->vma + sdyn->output_offset;
10374 BFD_ASSERT (htab->elf.hgot->root.u.def.value
10375 < htab->elf.hgot->root.u.def.section->size);
10376 bfd_put_32 (output_bfd, val, p);
10377 }
10378 }
10379 else
10380 {
10381 /* xgettext:c-format */
10382 info->callbacks->einfo (_("%P: %s not defined in linker created %s\n"),
10383 htab->elf.hgot->root.root.string,
10384 (htab->elf.sgotplt != NULL
10385 ? htab->elf.sgotplt->name
10386 : htab->elf.sgot->name));
10387 bfd_set_error (bfd_error_bad_value);
10388 ret = FALSE;
10389 }
10390
10391 elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize = 4;
10392 }
10393
10394 /* Fill in the first entry in the VxWorks procedure linkage table. */
10395 if (htab->is_vxworks
10396 && htab->elf.splt != NULL
10397 && htab->elf.splt->size != 0
10398 && htab->elf.splt->output_section != bfd_abs_section_ptr)
10399 {
10400 asection *splt = htab->elf.splt;
10401 /* Use the right PLT. */
10402 const bfd_vma *plt_entry = (bfd_link_pic (info)
10403 ? ppc_elf_vxworks_pic_plt0_entry
10404 : ppc_elf_vxworks_plt0_entry);
10405
10406 if (!bfd_link_pic (info))
10407 {
10408 bfd_vma got_value = SYM_VAL (htab->elf.hgot);
10409
10410 bfd_put_32 (output_bfd, plt_entry[0] | PPC_HA (got_value),
10411 splt->contents + 0);
10412 bfd_put_32 (output_bfd, plt_entry[1] | PPC_LO (got_value),
10413 splt->contents + 4);
10414 }
10415 else
10416 {
10417 bfd_put_32 (output_bfd, plt_entry[0], splt->contents + 0);
10418 bfd_put_32 (output_bfd, plt_entry[1], splt->contents + 4);
10419 }
10420 bfd_put_32 (output_bfd, plt_entry[2], splt->contents + 8);
10421 bfd_put_32 (output_bfd, plt_entry[3], splt->contents + 12);
10422 bfd_put_32 (output_bfd, plt_entry[4], splt->contents + 16);
10423 bfd_put_32 (output_bfd, plt_entry[5], splt->contents + 20);
10424 bfd_put_32 (output_bfd, plt_entry[6], splt->contents + 24);
10425 bfd_put_32 (output_bfd, plt_entry[7], splt->contents + 28);
10426
10427 if (! bfd_link_pic (info))
10428 {
10429 Elf_Internal_Rela rela;
10430 bfd_byte *loc;
10431
10432 loc = htab->srelplt2->contents;
10433
10434 /* Output the @ha relocation for the first instruction. */
10435 rela.r_offset = (htab->elf.splt->output_section->vma
10436 + htab->elf.splt->output_offset
10437 + 2);
10438 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
10439 rela.r_addend = 0;
10440 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10441 loc += sizeof (Elf32_External_Rela);
10442
10443 /* Output the @l relocation for the second instruction. */
10444 rela.r_offset = (htab->elf.splt->output_section->vma
10445 + htab->elf.splt->output_offset
10446 + 6);
10447 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
10448 rela.r_addend = 0;
10449 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10450 loc += sizeof (Elf32_External_Rela);
10451
10452 /* Fix up the remaining relocations. They may have the wrong
10453 symbol index for _G_O_T_ or _P_L_T_ depending on the order
10454 in which symbols were output. */
10455 while (loc < htab->srelplt2->contents + htab->srelplt2->size)
10456 {
10457 Elf_Internal_Rela rel;
10458
10459 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
10460 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
10461 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
10462 loc += sizeof (Elf32_External_Rela);
10463
10464 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
10465 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
10466 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
10467 loc += sizeof (Elf32_External_Rela);
10468
10469 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
10470 rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_PPC_ADDR32);
10471 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
10472 loc += sizeof (Elf32_External_Rela);
10473 }
10474 }
10475 }
10476
10477 if (htab->glink != NULL
10478 && htab->glink->contents != NULL
10479 && htab->elf.dynamic_sections_created)
10480 {
10481 unsigned char *p;
10482 unsigned char *endp;
10483 bfd_vma res0;
10484 unsigned int i;
10485
10486 /*
10487 * PIC glink code is the following:
10488 *
10489 * # ith PLT code stub.
10490 * addis 11,30,(plt+(i-1)*4-got)@ha
10491 * lwz 11,(plt+(i-1)*4-got)@l(11)
10492 * mtctr 11
10493 * bctr
10494 *
10495 * # A table of branches, one for each plt entry.
10496 * # The idea is that the plt call stub loads ctr and r11 with these
10497 * # addresses, so (r11 - res_0) gives the plt index * 4.
10498 * res_0: b PLTresolve
10499 * res_1: b PLTresolve
10500 * .
10501 * # Some number of entries towards the end can be nops
10502 * res_n_m3: nop
10503 * res_n_m2: nop
10504 * res_n_m1:
10505 *
10506 * PLTresolve:
10507 * addis 11,11,(1f-res_0)@ha
10508 * mflr 0
10509 * bcl 20,31,1f
10510 * 1: addi 11,11,(1b-res_0)@l
10511 * mflr 12
10512 * mtlr 0
10513 * sub 11,11,12 # r11 = index * 4
10514 * addis 12,12,(got+4-1b)@ha
10515 * lwz 0,(got+4-1b)@l(12) # got[1] address of dl_runtime_resolve
10516 * lwz 12,(got+8-1b)@l(12) # got[2] contains the map address
10517 * mtctr 0
10518 * add 0,11,11
10519 * add 11,0,11 # r11 = index * 12 = reloc offset.
10520 * bctr
10521 */
10522 static const unsigned int pic_plt_resolve[] =
10523 {
10524 ADDIS_11_11,
10525 MFLR_0,
10526 BCL_20_31,
10527 ADDI_11_11,
10528 MFLR_12,
10529 MTLR_0,
10530 SUB_11_11_12,
10531 ADDIS_12_12,
10532 LWZ_0_12,
10533 LWZ_12_12,
10534 MTCTR_0,
10535 ADD_0_11_11,
10536 ADD_11_0_11,
10537 BCTR,
10538 NOP,
10539 NOP
10540 };
10541
10542 /*
10543 * Non-PIC glink code is a little simpler.
10544 *
10545 * # ith PLT code stub.
10546 * lis 11,(plt+(i-1)*4)@ha
10547 * lwz 11,(plt+(i-1)*4)@l(11)
10548 * mtctr 11
10549 * bctr
10550 *
10551 * The branch table is the same, then comes
10552 *
10553 * PLTresolve:
10554 * lis 12,(got+4)@ha
10555 * addis 11,11,(-res_0)@ha
10556 * lwz 0,(got+4)@l(12) # got[1] address of dl_runtime_resolve
10557 * addi 11,11,(-res_0)@l # r11 = index * 4
10558 * mtctr 0
10559 * add 0,11,11
10560 * lwz 12,(got+8)@l(12) # got[2] contains the map address
10561 * add 11,0,11 # r11 = index * 12 = reloc offset.
10562 * bctr
10563 */
10564 static const unsigned int plt_resolve[] =
10565 {
10566 LIS_12,
10567 ADDIS_11_11,
10568 LWZ_0_12,
10569 ADDI_11_11,
10570 MTCTR_0,
10571 ADD_0_11_11,
10572 LWZ_12_12,
10573 ADD_11_0_11,
10574 BCTR,
10575 NOP,
10576 NOP,
10577 NOP,
10578 NOP,
10579 NOP,
10580 NOP,
10581 NOP
10582 };
10583
10584 if (ARRAY_SIZE (pic_plt_resolve) != GLINK_PLTRESOLVE / 4)
10585 abort ();
10586 if (ARRAY_SIZE (plt_resolve) != GLINK_PLTRESOLVE / 4)
10587 abort ();
10588
10589 /* Build the branch table, one for each plt entry (less one),
10590 and perhaps some padding. */
10591 p = htab->glink->contents;
10592 p += htab->glink_pltresolve;
10593 endp = htab->glink->contents;
10594 endp += htab->glink->size - GLINK_PLTRESOLVE;
10595 while (p < endp - (htab->params->ppc476_workaround ? 0 : 8 * 4))
10596 {
10597 bfd_put_32 (output_bfd, B + endp - p, p);
10598 p += 4;
10599 }
10600 while (p < endp)
10601 {
10602 bfd_put_32 (output_bfd, NOP, p);
10603 p += 4;
10604 }
10605
10606 res0 = (htab->glink_pltresolve
10607 + htab->glink->output_section->vma
10608 + htab->glink->output_offset);
10609
10610 if (htab->params->ppc476_workaround)
10611 {
10612 /* Ensure that a call stub at the end of a page doesn't
10613 result in prefetch over the end of the page into the
10614 glink branch table. */
10615 bfd_vma pagesize = (bfd_vma) 1 << htab->params->pagesize_p2;
10616 bfd_vma page_addr;
10617 bfd_vma glink_start = (htab->glink->output_section->vma
10618 + htab->glink->output_offset);
10619
10620 for (page_addr = res0 & -pagesize;
10621 page_addr > glink_start;
10622 page_addr -= pagesize)
10623 {
10624 /* We have a plt call stub that may need fixing. */
10625 bfd_byte *loc;
10626 unsigned int insn;
10627
10628 loc = htab->glink->contents + page_addr - 4 - glink_start;
10629 insn = bfd_get_32 (output_bfd, loc);
10630 if (insn == BCTR)
10631 {
10632 /* By alignment, we know that there must be at least
10633 one other call stub before this one. */
10634 insn = bfd_get_32 (output_bfd, loc - 16);
10635 if (insn == BCTR)
10636 bfd_put_32 (output_bfd, B | (-16 & 0x3fffffc), loc);
10637 else
10638 bfd_put_32 (output_bfd, B | (-20 & 0x3fffffc), loc);
10639 }
10640 }
10641 }
10642
10643 /* Last comes the PLTresolve stub. */
10644 if (bfd_link_pic (info))
10645 {
10646 bfd_vma bcl;
10647
10648 for (i = 0; i < ARRAY_SIZE (pic_plt_resolve); i++)
10649 {
10650 unsigned int insn = pic_plt_resolve[i];
10651
10652 if (htab->params->ppc476_workaround && insn == NOP)
10653 insn = BA + 0;
10654 bfd_put_32 (output_bfd, insn, p);
10655 p += 4;
10656 }
10657 p -= 4 * ARRAY_SIZE (pic_plt_resolve);
10658
10659 bcl = (htab->glink->size - GLINK_PLTRESOLVE + 3*4
10660 + htab->glink->output_section->vma
10661 + htab->glink->output_offset);
10662
10663 bfd_put_32 (output_bfd,
10664 ADDIS_11_11 + PPC_HA (bcl - res0), p + 0*4);
10665 bfd_put_32 (output_bfd,
10666 ADDI_11_11 + PPC_LO (bcl - res0), p + 3*4);
10667 bfd_put_32 (output_bfd,
10668 ADDIS_12_12 + PPC_HA (got + 4 - bcl), p + 7*4);
10669 if (PPC_HA (got + 4 - bcl) == PPC_HA (got + 8 - bcl))
10670 {
10671 bfd_put_32 (output_bfd,
10672 LWZ_0_12 + PPC_LO (got + 4 - bcl), p + 8*4);
10673 bfd_put_32 (output_bfd,
10674 LWZ_12_12 + PPC_LO (got + 8 - bcl), p + 9*4);
10675 }
10676 else
10677 {
10678 bfd_put_32 (output_bfd,
10679 LWZU_0_12 + PPC_LO (got + 4 - bcl), p + 8*4);
10680 bfd_put_32 (output_bfd,
10681 LWZ_12_12 + 4, p + 9*4);
10682 }
10683 }
10684 else
10685 {
10686 for (i = 0; i < ARRAY_SIZE (plt_resolve); i++)
10687 {
10688 unsigned int insn = plt_resolve[i];
10689
10690 if (htab->params->ppc476_workaround && insn == NOP)
10691 insn = BA + 0;
10692 bfd_put_32 (output_bfd, insn, p);
10693 p += 4;
10694 }
10695 p -= 4 * ARRAY_SIZE (plt_resolve);
10696
10697 bfd_put_32 (output_bfd,
10698 LIS_12 + PPC_HA (got + 4), p + 0*4);
10699 bfd_put_32 (output_bfd,
10700 ADDIS_11_11 + PPC_HA (-res0), p + 1*4);
10701 bfd_put_32 (output_bfd,
10702 ADDI_11_11 + PPC_LO (-res0), p + 3*4);
10703 if (PPC_HA (got + 4) == PPC_HA (got + 8))
10704 {
10705 bfd_put_32 (output_bfd,
10706 LWZ_0_12 + PPC_LO (got + 4), p + 2*4);
10707 bfd_put_32 (output_bfd,
10708 LWZ_12_12 + PPC_LO (got + 8), p + 6*4);
10709 }
10710 else
10711 {
10712 bfd_put_32 (output_bfd,
10713 LWZU_0_12 + PPC_LO (got + 4), p + 2*4);
10714 bfd_put_32 (output_bfd,
10715 LWZ_12_12 + 4, p + 6*4);
10716 }
10717 }
10718 }
10719
10720 if (htab->glink_eh_frame != NULL
10721 && htab->glink_eh_frame->contents != NULL)
10722 {
10723 unsigned char *p = htab->glink_eh_frame->contents;
10724 bfd_vma val;
10725
10726 p += sizeof (glink_eh_frame_cie);
10727 /* FDE length. */
10728 p += 4;
10729 /* CIE pointer. */
10730 p += 4;
10731 /* Offset to .glink. */
10732 val = (htab->glink->output_section->vma
10733 + htab->glink->output_offset);
10734 val -= (htab->glink_eh_frame->output_section->vma
10735 + htab->glink_eh_frame->output_offset);
10736 val -= p - htab->glink_eh_frame->contents;
10737 bfd_put_32 (htab->elf.dynobj, val, p);
10738
10739 if (htab->glink_eh_frame->sec_info_type == SEC_INFO_TYPE_EH_FRAME
10740 && !_bfd_elf_write_section_eh_frame (output_bfd, info,
10741 htab->glink_eh_frame,
10742 htab->glink_eh_frame->contents))
10743 return FALSE;
10744 }
10745
10746 return ret;
10747 }
10748 \f
10749 #define TARGET_LITTLE_SYM powerpc_elf32_le_vec
10750 #define TARGET_LITTLE_NAME "elf32-powerpcle"
10751 #define TARGET_BIG_SYM powerpc_elf32_vec
10752 #define TARGET_BIG_NAME "elf32-powerpc"
10753 #define ELF_ARCH bfd_arch_powerpc
10754 #define ELF_TARGET_ID PPC32_ELF_DATA
10755 #define ELF_MACHINE_CODE EM_PPC
10756 #ifdef __QNXTARGET__
10757 #define ELF_MAXPAGESIZE 0x1000
10758 #define ELF_COMMONPAGESIZE 0x1000
10759 #else
10760 #define ELF_MAXPAGESIZE 0x10000
10761 #define ELF_COMMONPAGESIZE 0x10000
10762 #endif
10763 #define ELF_MINPAGESIZE 0x1000
10764 #define elf_info_to_howto ppc_elf_info_to_howto
10765
10766 #ifdef EM_CYGNUS_POWERPC
10767 #define ELF_MACHINE_ALT1 EM_CYGNUS_POWERPC
10768 #endif
10769
10770 #ifdef EM_PPC_OLD
10771 #define ELF_MACHINE_ALT2 EM_PPC_OLD
10772 #endif
10773
10774 #define elf_backend_plt_not_loaded 1
10775 #define elf_backend_want_dynrelro 1
10776 #define elf_backend_can_gc_sections 1
10777 #define elf_backend_can_refcount 1
10778 #define elf_backend_rela_normal 1
10779 #define elf_backend_caches_rawsize 1
10780
10781 #define bfd_elf32_mkobject ppc_elf_mkobject
10782 #define bfd_elf32_bfd_merge_private_bfd_data ppc_elf_merge_private_bfd_data
10783 #define bfd_elf32_bfd_relax_section ppc_elf_relax_section
10784 #define bfd_elf32_bfd_reloc_type_lookup ppc_elf_reloc_type_lookup
10785 #define bfd_elf32_bfd_reloc_name_lookup ppc_elf_reloc_name_lookup
10786 #define bfd_elf32_bfd_set_private_flags ppc_elf_set_private_flags
10787 #define bfd_elf32_bfd_link_hash_table_create ppc_elf_link_hash_table_create
10788 #define bfd_elf32_get_synthetic_symtab ppc_elf_get_synthetic_symtab
10789
10790 #define elf_backend_object_p ppc_elf_object_p
10791 #define elf_backend_gc_mark_hook ppc_elf_gc_mark_hook
10792 #define elf_backend_section_from_shdr ppc_elf_section_from_shdr
10793 #define elf_backend_relocate_section ppc_elf_relocate_section
10794 #define elf_backend_create_dynamic_sections ppc_elf_create_dynamic_sections
10795 #define elf_backend_check_relocs ppc_elf_check_relocs
10796 #define elf_backend_relocs_compatible _bfd_elf_relocs_compatible
10797 #define elf_backend_copy_indirect_symbol ppc_elf_copy_indirect_symbol
10798 #define elf_backend_adjust_dynamic_symbol ppc_elf_adjust_dynamic_symbol
10799 #define elf_backend_add_symbol_hook ppc_elf_add_symbol_hook
10800 #define elf_backend_size_dynamic_sections ppc_elf_size_dynamic_sections
10801 #define elf_backend_hash_symbol ppc_elf_hash_symbol
10802 #define elf_backend_finish_dynamic_symbol ppc_elf_finish_dynamic_symbol
10803 #define elf_backend_finish_dynamic_sections ppc_elf_finish_dynamic_sections
10804 #define elf_backend_fake_sections ppc_elf_fake_sections
10805 #define elf_backend_additional_program_headers ppc_elf_additional_program_headers
10806 #define elf_backend_modify_segment_map ppc_elf_modify_segment_map
10807 #define elf_backend_grok_prstatus ppc_elf_grok_prstatus
10808 #define elf_backend_grok_psinfo ppc_elf_grok_psinfo
10809 #define elf_backend_write_core_note ppc_elf_write_core_note
10810 #define elf_backend_reloc_type_class ppc_elf_reloc_type_class
10811 #define elf_backend_begin_write_processing ppc_elf_begin_write_processing
10812 #define elf_backend_final_write_processing ppc_elf_final_write_processing
10813 #define elf_backend_write_section ppc_elf_write_section
10814 #define elf_backend_get_sec_type_attr ppc_elf_get_sec_type_attr
10815 #define elf_backend_plt_sym_val ppc_elf_plt_sym_val
10816 #define elf_backend_action_discarded ppc_elf_action_discarded
10817 #define elf_backend_init_index_section _bfd_elf_init_1_index_section
10818 #define elf_backend_lookup_section_flags_hook ppc_elf_lookup_section_flags
10819
10820 #include "elf32-target.h"
10821
10822 /* FreeBSD Target */
10823
10824 #undef TARGET_LITTLE_SYM
10825 #undef TARGET_LITTLE_NAME
10826
10827 #undef TARGET_BIG_SYM
10828 #define TARGET_BIG_SYM powerpc_elf32_fbsd_vec
10829 #undef TARGET_BIG_NAME
10830 #define TARGET_BIG_NAME "elf32-powerpc-freebsd"
10831
10832 #undef ELF_OSABI
10833 #define ELF_OSABI ELFOSABI_FREEBSD
10834
10835 #undef elf32_bed
10836 #define elf32_bed elf32_powerpc_fbsd_bed
10837
10838 #include "elf32-target.h"
10839
10840 /* VxWorks Target */
10841
10842 #undef TARGET_LITTLE_SYM
10843 #undef TARGET_LITTLE_NAME
10844
10845 #undef TARGET_BIG_SYM
10846 #define TARGET_BIG_SYM powerpc_elf32_vxworks_vec
10847 #undef TARGET_BIG_NAME
10848 #define TARGET_BIG_NAME "elf32-powerpc-vxworks"
10849
10850 #undef ELF_OSABI
10851
10852 /* VxWorks uses the elf default section flags for .plt. */
10853 static const struct bfd_elf_special_section *
10854 ppc_elf_vxworks_get_sec_type_attr (bfd *abfd, asection *sec)
10855 {
10856 if (sec->name == NULL)
10857 return NULL;
10858
10859 if (strcmp (sec->name, ".plt") == 0)
10860 return _bfd_elf_get_sec_type_attr (abfd, sec);
10861
10862 return ppc_elf_get_sec_type_attr (abfd, sec);
10863 }
10864
10865 /* Like ppc_elf_link_hash_table_create, but overrides
10866 appropriately for VxWorks. */
10867 static struct bfd_link_hash_table *
10868 ppc_elf_vxworks_link_hash_table_create (bfd *abfd)
10869 {
10870 struct bfd_link_hash_table *ret;
10871
10872 ret = ppc_elf_link_hash_table_create (abfd);
10873 if (ret)
10874 {
10875 struct ppc_elf_link_hash_table *htab
10876 = (struct ppc_elf_link_hash_table *)ret;
10877 htab->is_vxworks = 1;
10878 htab->plt_type = PLT_VXWORKS;
10879 htab->plt_entry_size = VXWORKS_PLT_ENTRY_SIZE;
10880 htab->plt_slot_size = VXWORKS_PLT_ENTRY_SIZE;
10881 htab->plt_initial_entry_size = VXWORKS_PLT_INITIAL_ENTRY_SIZE;
10882 }
10883 return ret;
10884 }
10885
10886 /* Tweak magic VxWorks symbols as they are loaded. */
10887 static bfd_boolean
10888 ppc_elf_vxworks_add_symbol_hook (bfd *abfd,
10889 struct bfd_link_info *info,
10890 Elf_Internal_Sym *sym,
10891 const char **namep,
10892 flagword *flagsp,
10893 asection **secp,
10894 bfd_vma *valp)
10895 {
10896 if (!elf_vxworks_add_symbol_hook (abfd, info, sym, namep, flagsp, secp,
10897 valp))
10898 return FALSE;
10899
10900 return ppc_elf_add_symbol_hook (abfd, info, sym, namep, flagsp, secp, valp);
10901 }
10902
10903 static void
10904 ppc_elf_vxworks_final_write_processing (bfd *abfd, bfd_boolean linker)
10905 {
10906 ppc_elf_final_write_processing (abfd, linker);
10907 elf_vxworks_final_write_processing (abfd, linker);
10908 }
10909
10910 /* On VxWorks, we emit relocations against _PROCEDURE_LINKAGE_TABLE_, so
10911 define it. */
10912 #undef elf_backend_want_plt_sym
10913 #define elf_backend_want_plt_sym 1
10914 #undef elf_backend_want_got_plt
10915 #define elf_backend_want_got_plt 1
10916 #undef elf_backend_got_symbol_offset
10917 #define elf_backend_got_symbol_offset 0
10918 #undef elf_backend_plt_not_loaded
10919 #define elf_backend_plt_not_loaded 0
10920 #undef elf_backend_plt_readonly
10921 #define elf_backend_plt_readonly 1
10922 #undef elf_backend_got_header_size
10923 #define elf_backend_got_header_size 12
10924 #undef elf_backend_dtrel_excludes_plt
10925 #define elf_backend_dtrel_excludes_plt 1
10926
10927 #undef bfd_elf32_get_synthetic_symtab
10928
10929 #undef bfd_elf32_bfd_link_hash_table_create
10930 #define bfd_elf32_bfd_link_hash_table_create \
10931 ppc_elf_vxworks_link_hash_table_create
10932 #undef elf_backend_add_symbol_hook
10933 #define elf_backend_add_symbol_hook \
10934 ppc_elf_vxworks_add_symbol_hook
10935 #undef elf_backend_link_output_symbol_hook
10936 #define elf_backend_link_output_symbol_hook \
10937 elf_vxworks_link_output_symbol_hook
10938 #undef elf_backend_final_write_processing
10939 #define elf_backend_final_write_processing \
10940 ppc_elf_vxworks_final_write_processing
10941 #undef elf_backend_get_sec_type_attr
10942 #define elf_backend_get_sec_type_attr \
10943 ppc_elf_vxworks_get_sec_type_attr
10944 #undef elf_backend_emit_relocs
10945 #define elf_backend_emit_relocs \
10946 elf_vxworks_emit_relocs
10947
10948 #undef elf32_bed
10949 #define elf32_bed ppc_elf_vxworks_bed
10950 #undef elf_backend_post_process_headers
10951
10952 #include "elf32-target.h"
GDB Binutils - Deliverables
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