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dynrelro section for read-only dynamic symbols copied into executable
[deliverable/binutils-gdb.git] / bfd / elf32-ppc.c
1 /* PowerPC-specific support for 32-bit ELF
2 Copyright (C) 1994-2016 Free Software Foundation, Inc.
3 Written by Ian Lance Taylor, Cygnus Support.
4
5 This file is part of BFD, the Binary File Descriptor library.
6
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
11
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
16
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the
19 Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor,
20 Boston, MA 02110-1301, USA. */
21
22
23 /* This file is based on a preliminary PowerPC ELF ABI. The
24 information may not match the final PowerPC ELF ABI. It includes
25 suggestions from the in-progress Embedded PowerPC ABI, and that
26 information may also not match. */
27
28 #include "sysdep.h"
29 #include <stdarg.h>
30 #include "bfd.h"
31 #include "bfdlink.h"
32 #include "libbfd.h"
33 #include "elf-bfd.h"
34 #include "elf/ppc.h"
35 #include "elf32-ppc.h"
36 #include "elf-vxworks.h"
37 #include "dwarf2.h"
38 #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 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 0x1f007ff, /* 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 0x1f007ff, /* 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 0x1f007ff, /* 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 0x1f007ff, /* 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 0x1f007ff, /* 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 0x1f007ff, /* dst_mask */
1657 FALSE), /* pcrel_offset */
1658
1659 HOWTO (R_PPC_IRELATIVE, /* type */
1660 0, /* rightshift */
1661 2, /* size (0 = byte, 1 = short, 2 = long) */
1662 32, /* bitsize */
1663 FALSE, /* pc_relative */
1664 0, /* bitpos */
1665 complain_overflow_dont, /* complain_on_overflow */
1666 ppc_elf_unhandled_reloc, /* special_function */
1667 "R_PPC_IRELATIVE", /* name */
1668 FALSE, /* partial_inplace */
1669 0, /* src_mask */
1670 0xffffffff, /* dst_mask */
1671 FALSE), /* pcrel_offset */
1672
1673 /* A 16 bit relative relocation. */
1674 HOWTO (R_PPC_REL16, /* type */
1675 0, /* rightshift */
1676 1, /* size (0 = byte, 1 = short, 2 = long) */
1677 16, /* bitsize */
1678 TRUE, /* pc_relative */
1679 0, /* bitpos */
1680 complain_overflow_signed, /* complain_on_overflow */
1681 bfd_elf_generic_reloc, /* special_function */
1682 "R_PPC_REL16", /* name */
1683 FALSE, /* partial_inplace */
1684 0, /* src_mask */
1685 0xffff, /* dst_mask */
1686 TRUE), /* pcrel_offset */
1687
1688 /* A 16 bit relative relocation without overflow. */
1689 HOWTO (R_PPC_REL16_LO, /* type */
1690 0, /* rightshift */
1691 1, /* size (0 = byte, 1 = short, 2 = long) */
1692 16, /* bitsize */
1693 TRUE, /* pc_relative */
1694 0, /* bitpos */
1695 complain_overflow_dont,/* complain_on_overflow */
1696 bfd_elf_generic_reloc, /* special_function */
1697 "R_PPC_REL16_LO", /* name */
1698 FALSE, /* partial_inplace */
1699 0, /* src_mask */
1700 0xffff, /* dst_mask */
1701 TRUE), /* pcrel_offset */
1702
1703 /* The high order 16 bits of a relative address. */
1704 HOWTO (R_PPC_REL16_HI, /* type */
1705 16, /* rightshift */
1706 1, /* size (0 = byte, 1 = short, 2 = long) */
1707 16, /* bitsize */
1708 TRUE, /* pc_relative */
1709 0, /* bitpos */
1710 complain_overflow_dont, /* complain_on_overflow */
1711 bfd_elf_generic_reloc, /* special_function */
1712 "R_PPC_REL16_HI", /* name */
1713 FALSE, /* partial_inplace */
1714 0, /* src_mask */
1715 0xffff, /* dst_mask */
1716 TRUE), /* pcrel_offset */
1717
1718 /* The high order 16 bits of a relative address, plus 1 if the contents of
1719 the low 16 bits, treated as a signed number, is negative. */
1720 HOWTO (R_PPC_REL16_HA, /* type */
1721 16, /* rightshift */
1722 1, /* size (0 = byte, 1 = short, 2 = long) */
1723 16, /* bitsize */
1724 TRUE, /* pc_relative */
1725 0, /* bitpos */
1726 complain_overflow_dont, /* complain_on_overflow */
1727 ppc_elf_addr16_ha_reloc, /* special_function */
1728 "R_PPC_REL16_HA", /* name */
1729 FALSE, /* partial_inplace */
1730 0, /* src_mask */
1731 0xffff, /* dst_mask */
1732 TRUE), /* pcrel_offset */
1733
1734 /* Like R_PPC_REL16_HA but for split field in addpcis. */
1735 HOWTO (R_PPC_REL16DX_HA, /* type */
1736 16, /* rightshift */
1737 2, /* size (0 = byte, 1 = short, 2 = long) */
1738 16, /* bitsize */
1739 TRUE, /* pc_relative */
1740 0, /* bitpos */
1741 complain_overflow_signed, /* complain_on_overflow */
1742 ppc_elf_addr16_ha_reloc, /* special_function */
1743 "R_PPC_REL16DX_HA", /* name */
1744 FALSE, /* partial_inplace */
1745 0, /* src_mask */
1746 0x1fffc1, /* dst_mask */
1747 TRUE), /* pcrel_offset */
1748
1749 /* GNU extension to record C++ vtable hierarchy. */
1750 HOWTO (R_PPC_GNU_VTINHERIT, /* type */
1751 0, /* rightshift */
1752 0, /* size (0 = byte, 1 = short, 2 = long) */
1753 0, /* bitsize */
1754 FALSE, /* pc_relative */
1755 0, /* bitpos */
1756 complain_overflow_dont, /* complain_on_overflow */
1757 NULL, /* special_function */
1758 "R_PPC_GNU_VTINHERIT", /* name */
1759 FALSE, /* partial_inplace */
1760 0, /* src_mask */
1761 0, /* dst_mask */
1762 FALSE), /* pcrel_offset */
1763
1764 /* GNU extension to record C++ vtable member usage. */
1765 HOWTO (R_PPC_GNU_VTENTRY, /* type */
1766 0, /* rightshift */
1767 0, /* size (0 = byte, 1 = short, 2 = long) */
1768 0, /* bitsize */
1769 FALSE, /* pc_relative */
1770 0, /* bitpos */
1771 complain_overflow_dont, /* complain_on_overflow */
1772 NULL, /* special_function */
1773 "R_PPC_GNU_VTENTRY", /* name */
1774 FALSE, /* partial_inplace */
1775 0, /* src_mask */
1776 0, /* dst_mask */
1777 FALSE), /* pcrel_offset */
1778
1779 /* Phony reloc to handle AIX style TOC entries. */
1780 HOWTO (R_PPC_TOC16, /* type */
1781 0, /* rightshift */
1782 1, /* size (0 = byte, 1 = short, 2 = long) */
1783 16, /* bitsize */
1784 FALSE, /* pc_relative */
1785 0, /* bitpos */
1786 complain_overflow_signed, /* complain_on_overflow */
1787 ppc_elf_unhandled_reloc, /* special_function */
1788 "R_PPC_TOC16", /* name */
1789 FALSE, /* partial_inplace */
1790 0, /* src_mask */
1791 0xffff, /* dst_mask */
1792 FALSE), /* pcrel_offset */
1793 };
1794
1795 /* External 32-bit PPC structure for PRPSINFO. This structure is
1796 ABI-defined, thus we choose to use char arrays here in order to
1797 avoid dealing with different types in different architectures.
1798
1799 The PPC 32-bit structure uses int for `pr_uid' and `pr_gid' while
1800 most non-PPC architectures use `short int'.
1801
1802 This structure will ultimately be written in the corefile's note
1803 section, as the PRPSINFO. */
1804
1805 struct elf_external_ppc_linux_prpsinfo32
1806 {
1807 char pr_state; /* Numeric process state. */
1808 char pr_sname; /* Char for pr_state. */
1809 char pr_zomb; /* Zombie. */
1810 char pr_nice; /* Nice val. */
1811 char pr_flag[4]; /* Flags. */
1812 char pr_uid[4];
1813 char pr_gid[4];
1814 char pr_pid[4];
1815 char pr_ppid[4];
1816 char pr_pgrp[4];
1817 char pr_sid[4];
1818 char pr_fname[16]; /* Filename of executable. */
1819 char pr_psargs[80]; /* Initial part of arg list. */
1820 };
1821
1822 /* Helper function to copy an elf_internal_linux_prpsinfo in host
1823 endian to an elf_external_ppc_linux_prpsinfo32 in target endian. */
1824
1825 static inline void
1826 swap_ppc_linux_prpsinfo32_out (bfd *obfd,
1827 const struct elf_internal_linux_prpsinfo *from,
1828 struct elf_external_ppc_linux_prpsinfo32 *to)
1829 {
1830 bfd_put_8 (obfd, from->pr_state, &to->pr_state);
1831 bfd_put_8 (obfd, from->pr_sname, &to->pr_sname);
1832 bfd_put_8 (obfd, from->pr_zomb, &to->pr_zomb);
1833 bfd_put_8 (obfd, from->pr_nice, &to->pr_nice);
1834 bfd_put_32 (obfd, from->pr_flag, to->pr_flag);
1835 bfd_put_32 (obfd, from->pr_uid, to->pr_uid);
1836 bfd_put_32 (obfd, from->pr_gid, to->pr_gid);
1837 bfd_put_32 (obfd, from->pr_pid, to->pr_pid);
1838 bfd_put_32 (obfd, from->pr_ppid, to->pr_ppid);
1839 bfd_put_32 (obfd, from->pr_pgrp, to->pr_pgrp);
1840 bfd_put_32 (obfd, from->pr_sid, to->pr_sid);
1841 strncpy (to->pr_fname, from->pr_fname, sizeof (to->pr_fname));
1842 strncpy (to->pr_psargs, from->pr_psargs, sizeof (to->pr_psargs));
1843 }
1844 \f
1845 /* Initialize the ppc_elf_howto_table, so that linear accesses can be done. */
1846
1847 static void
1848 ppc_elf_howto_init (void)
1849 {
1850 unsigned int i, type;
1851
1852 for (i = 0;
1853 i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]);
1854 i++)
1855 {
1856 type = ppc_elf_howto_raw[i].type;
1857 if (type >= (sizeof (ppc_elf_howto_table)
1858 / sizeof (ppc_elf_howto_table[0])))
1859 abort ();
1860 ppc_elf_howto_table[type] = &ppc_elf_howto_raw[i];
1861 }
1862 }
1863
1864 static reloc_howto_type *
1865 ppc_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1866 bfd_reloc_code_real_type code)
1867 {
1868 enum elf_ppc_reloc_type r;
1869
1870 /* Initialize howto table if not already done. */
1871 if (!ppc_elf_howto_table[R_PPC_ADDR32])
1872 ppc_elf_howto_init ();
1873
1874 switch (code)
1875 {
1876 default:
1877 return NULL;
1878
1879 case BFD_RELOC_NONE: r = R_PPC_NONE; break;
1880 case BFD_RELOC_32: r = R_PPC_ADDR32; break;
1881 case BFD_RELOC_PPC_BA26: r = R_PPC_ADDR24; break;
1882 case BFD_RELOC_PPC64_ADDR16_DS:
1883 case BFD_RELOC_16: r = R_PPC_ADDR16; break;
1884 case BFD_RELOC_PPC64_ADDR16_LO_DS:
1885 case BFD_RELOC_LO16: r = R_PPC_ADDR16_LO; break;
1886 case BFD_RELOC_HI16: r = R_PPC_ADDR16_HI; break;
1887 case BFD_RELOC_HI16_S: r = R_PPC_ADDR16_HA; break;
1888 case BFD_RELOC_PPC_BA16: r = R_PPC_ADDR14; break;
1889 case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC_ADDR14_BRTAKEN; break;
1890 case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC_ADDR14_BRNTAKEN; break;
1891 case BFD_RELOC_PPC_B26: r = R_PPC_REL24; break;
1892 case BFD_RELOC_PPC_B16: r = R_PPC_REL14; break;
1893 case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC_REL14_BRTAKEN; break;
1894 case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC_REL14_BRNTAKEN; break;
1895 case BFD_RELOC_PPC64_GOT16_DS:
1896 case BFD_RELOC_16_GOTOFF: r = R_PPC_GOT16; break;
1897 case BFD_RELOC_PPC64_GOT16_LO_DS:
1898 case BFD_RELOC_LO16_GOTOFF: r = R_PPC_GOT16_LO; break;
1899 case BFD_RELOC_HI16_GOTOFF: r = R_PPC_GOT16_HI; break;
1900 case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC_GOT16_HA; break;
1901 case BFD_RELOC_24_PLT_PCREL: r = R_PPC_PLTREL24; break;
1902 case BFD_RELOC_PPC_COPY: r = R_PPC_COPY; break;
1903 case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC_GLOB_DAT; break;
1904 case BFD_RELOC_PPC_LOCAL24PC: r = R_PPC_LOCAL24PC; break;
1905 case BFD_RELOC_32_PCREL: r = R_PPC_REL32; break;
1906 case BFD_RELOC_32_PLTOFF: r = R_PPC_PLT32; break;
1907 case BFD_RELOC_32_PLT_PCREL: r = R_PPC_PLTREL32; break;
1908 case BFD_RELOC_PPC64_PLT16_LO_DS:
1909 case BFD_RELOC_LO16_PLTOFF: r = R_PPC_PLT16_LO; break;
1910 case BFD_RELOC_HI16_PLTOFF: r = R_PPC_PLT16_HI; break;
1911 case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC_PLT16_HA; break;
1912 case BFD_RELOC_GPREL16: r = R_PPC_SDAREL16; break;
1913 case BFD_RELOC_PPC64_SECTOFF_DS:
1914 case BFD_RELOC_16_BASEREL: r = R_PPC_SECTOFF; break;
1915 case BFD_RELOC_PPC64_SECTOFF_LO_DS:
1916 case BFD_RELOC_LO16_BASEREL: r = R_PPC_SECTOFF_LO; break;
1917 case BFD_RELOC_HI16_BASEREL: r = R_PPC_SECTOFF_HI; break;
1918 case BFD_RELOC_HI16_S_BASEREL: r = R_PPC_SECTOFF_HA; break;
1919 case BFD_RELOC_CTOR: r = R_PPC_ADDR32; break;
1920 case BFD_RELOC_PPC64_TOC16_DS:
1921 case BFD_RELOC_PPC_TOC16: r = R_PPC_TOC16; break;
1922 case BFD_RELOC_PPC_TLS: r = R_PPC_TLS; break;
1923 case BFD_RELOC_PPC_TLSGD: r = R_PPC_TLSGD; break;
1924 case BFD_RELOC_PPC_TLSLD: r = R_PPC_TLSLD; break;
1925 case BFD_RELOC_PPC_DTPMOD: r = R_PPC_DTPMOD32; break;
1926 case BFD_RELOC_PPC64_TPREL16_DS:
1927 case BFD_RELOC_PPC_TPREL16: r = R_PPC_TPREL16; break;
1928 case BFD_RELOC_PPC64_TPREL16_LO_DS:
1929 case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC_TPREL16_LO; break;
1930 case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC_TPREL16_HI; break;
1931 case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC_TPREL16_HA; break;
1932 case BFD_RELOC_PPC_TPREL: r = R_PPC_TPREL32; break;
1933 case BFD_RELOC_PPC64_DTPREL16_DS:
1934 case BFD_RELOC_PPC_DTPREL16: r = R_PPC_DTPREL16; break;
1935 case BFD_RELOC_PPC64_DTPREL16_LO_DS:
1936 case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC_DTPREL16_LO; break;
1937 case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC_DTPREL16_HI; break;
1938 case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC_DTPREL16_HA; break;
1939 case BFD_RELOC_PPC_DTPREL: r = R_PPC_DTPREL32; break;
1940 case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC_GOT_TLSGD16; break;
1941 case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC_GOT_TLSGD16_LO; break;
1942 case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC_GOT_TLSGD16_HI; break;
1943 case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC_GOT_TLSGD16_HA; break;
1944 case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC_GOT_TLSLD16; break;
1945 case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC_GOT_TLSLD16_LO; break;
1946 case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC_GOT_TLSLD16_HI; break;
1947 case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC_GOT_TLSLD16_HA; break;
1948 case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC_GOT_TPREL16; break;
1949 case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC_GOT_TPREL16_LO; break;
1950 case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC_GOT_TPREL16_HI; break;
1951 case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC_GOT_TPREL16_HA; break;
1952 case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC_GOT_DTPREL16; break;
1953 case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC_GOT_DTPREL16_LO; break;
1954 case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC_GOT_DTPREL16_HI; break;
1955 case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC_GOT_DTPREL16_HA; break;
1956 case BFD_RELOC_PPC_EMB_NADDR32: r = R_PPC_EMB_NADDR32; break;
1957 case BFD_RELOC_PPC_EMB_NADDR16: r = R_PPC_EMB_NADDR16; break;
1958 case BFD_RELOC_PPC_EMB_NADDR16_LO: r = R_PPC_EMB_NADDR16_LO; break;
1959 case BFD_RELOC_PPC_EMB_NADDR16_HI: r = R_PPC_EMB_NADDR16_HI; break;
1960 case BFD_RELOC_PPC_EMB_NADDR16_HA: r = R_PPC_EMB_NADDR16_HA; break;
1961 case BFD_RELOC_PPC_EMB_SDAI16: r = R_PPC_EMB_SDAI16; break;
1962 case BFD_RELOC_PPC_EMB_SDA2I16: r = R_PPC_EMB_SDA2I16; break;
1963 case BFD_RELOC_PPC_EMB_SDA2REL: r = R_PPC_EMB_SDA2REL; break;
1964 case BFD_RELOC_PPC_EMB_SDA21: r = R_PPC_EMB_SDA21; break;
1965 case BFD_RELOC_PPC_EMB_MRKREF: r = R_PPC_EMB_MRKREF; break;
1966 case BFD_RELOC_PPC_EMB_RELSEC16: r = R_PPC_EMB_RELSEC16; break;
1967 case BFD_RELOC_PPC_EMB_RELST_LO: r = R_PPC_EMB_RELST_LO; break;
1968 case BFD_RELOC_PPC_EMB_RELST_HI: r = R_PPC_EMB_RELST_HI; break;
1969 case BFD_RELOC_PPC_EMB_RELST_HA: r = R_PPC_EMB_RELST_HA; break;
1970 case BFD_RELOC_PPC_EMB_BIT_FLD: r = R_PPC_EMB_BIT_FLD; break;
1971 case BFD_RELOC_PPC_EMB_RELSDA: r = R_PPC_EMB_RELSDA; break;
1972 case BFD_RELOC_PPC_VLE_REL8: r = R_PPC_VLE_REL8; break;
1973 case BFD_RELOC_PPC_VLE_REL15: r = R_PPC_VLE_REL15; break;
1974 case BFD_RELOC_PPC_VLE_REL24: r = R_PPC_VLE_REL24; break;
1975 case BFD_RELOC_PPC_VLE_LO16A: r = R_PPC_VLE_LO16A; break;
1976 case BFD_RELOC_PPC_VLE_LO16D: r = R_PPC_VLE_LO16D; break;
1977 case BFD_RELOC_PPC_VLE_HI16A: r = R_PPC_VLE_HI16A; break;
1978 case BFD_RELOC_PPC_VLE_HI16D: r = R_PPC_VLE_HI16D; break;
1979 case BFD_RELOC_PPC_VLE_HA16A: r = R_PPC_VLE_HA16A; break;
1980 case BFD_RELOC_PPC_VLE_HA16D: r = R_PPC_VLE_HA16D; break;
1981 case BFD_RELOC_PPC_VLE_SDA21: r = R_PPC_VLE_SDA21; break;
1982 case BFD_RELOC_PPC_VLE_SDA21_LO: r = R_PPC_VLE_SDA21_LO; break;
1983 case BFD_RELOC_PPC_VLE_SDAREL_LO16A:
1984 r = R_PPC_VLE_SDAREL_LO16A;
1985 break;
1986 case BFD_RELOC_PPC_VLE_SDAREL_LO16D:
1987 r = R_PPC_VLE_SDAREL_LO16D;
1988 break;
1989 case BFD_RELOC_PPC_VLE_SDAREL_HI16A:
1990 r = R_PPC_VLE_SDAREL_HI16A;
1991 break;
1992 case BFD_RELOC_PPC_VLE_SDAREL_HI16D:
1993 r = R_PPC_VLE_SDAREL_HI16D;
1994 break;
1995 case BFD_RELOC_PPC_VLE_SDAREL_HA16A:
1996 r = R_PPC_VLE_SDAREL_HA16A;
1997 break;
1998 case BFD_RELOC_PPC_VLE_SDAREL_HA16D:
1999 r = R_PPC_VLE_SDAREL_HA16D;
2000 break;
2001 case BFD_RELOC_16_PCREL: r = R_PPC_REL16; break;
2002 case BFD_RELOC_LO16_PCREL: r = R_PPC_REL16_LO; break;
2003 case BFD_RELOC_HI16_PCREL: r = R_PPC_REL16_HI; break;
2004 case BFD_RELOC_HI16_S_PCREL: r = R_PPC_REL16_HA; break;
2005 case BFD_RELOC_PPC_REL16DX_HA: r = R_PPC_REL16DX_HA; break;
2006 case BFD_RELOC_VTABLE_INHERIT: r = R_PPC_GNU_VTINHERIT; break;
2007 case BFD_RELOC_VTABLE_ENTRY: r = R_PPC_GNU_VTENTRY; break;
2008 }
2009
2010 return ppc_elf_howto_table[r];
2011 };
2012
2013 static reloc_howto_type *
2014 ppc_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
2015 const char *r_name)
2016 {
2017 unsigned int i;
2018
2019 for (i = 0;
2020 i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]);
2021 i++)
2022 if (ppc_elf_howto_raw[i].name != NULL
2023 && strcasecmp (ppc_elf_howto_raw[i].name, r_name) == 0)
2024 return &ppc_elf_howto_raw[i];
2025
2026 return NULL;
2027 }
2028
2029 /* Set the howto pointer for a PowerPC ELF reloc. */
2030
2031 static void
2032 ppc_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED,
2033 arelent *cache_ptr,
2034 Elf_Internal_Rela *dst)
2035 {
2036 unsigned int r_type;
2037
2038 /* Initialize howto table if not already done. */
2039 if (!ppc_elf_howto_table[R_PPC_ADDR32])
2040 ppc_elf_howto_init ();
2041
2042 r_type = ELF32_R_TYPE (dst->r_info);
2043 if (r_type >= R_PPC_max)
2044 {
2045 /* xgettext:c-format */
2046 _bfd_error_handler (_("%B: unrecognised PPC reloc number: %d"),
2047 abfd, r_type);
2048 bfd_set_error (bfd_error_bad_value);
2049 r_type = R_PPC_NONE;
2050 }
2051 cache_ptr->howto = ppc_elf_howto_table[r_type];
2052
2053 /* Just because the above assert didn't trigger doesn't mean that
2054 ELF32_R_TYPE (dst->r_info) is necessarily a valid relocation. */
2055 if (!cache_ptr->howto)
2056 {
2057 /* xgettext:c-format */
2058 _bfd_error_handler (_("%B: invalid relocation type %d"),
2059 abfd, r_type);
2060 bfd_set_error (bfd_error_bad_value);
2061
2062 cache_ptr->howto = ppc_elf_howto_table[R_PPC_NONE];
2063 }
2064 }
2065
2066 /* Handle the R_PPC_ADDR16_HA and R_PPC_REL16_HA relocs. */
2067
2068 static bfd_reloc_status_type
2069 ppc_elf_addr16_ha_reloc (bfd *abfd ATTRIBUTE_UNUSED,
2070 arelent *reloc_entry,
2071 asymbol *symbol,
2072 void *data ATTRIBUTE_UNUSED,
2073 asection *input_section,
2074 bfd *output_bfd,
2075 char **error_message ATTRIBUTE_UNUSED)
2076 {
2077 enum elf_ppc_reloc_type r_type;
2078 long insn;
2079 bfd_size_type octets;
2080 bfd_vma value;
2081
2082 if (output_bfd != NULL)
2083 {
2084 reloc_entry->address += input_section->output_offset;
2085 return bfd_reloc_ok;
2086 }
2087
2088 reloc_entry->addend += 0x8000;
2089 r_type = reloc_entry->howto->type;
2090 if (r_type != R_PPC_REL16DX_HA)
2091 return bfd_reloc_continue;
2092
2093 value = 0;
2094 if (!bfd_is_com_section (symbol->section))
2095 value = symbol->value;
2096 value += (reloc_entry->addend
2097 + symbol->section->output_offset
2098 + symbol->section->output_section->vma);
2099 value -= (reloc_entry->address
2100 + input_section->output_offset
2101 + input_section->output_section->vma);
2102 value >>= 16;
2103
2104 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
2105 insn = bfd_get_32 (abfd, (bfd_byte *) data + octets);
2106 insn &= ~0x1fffc1;
2107 insn |= (value & 0xffc1) | ((value & 0x3e) << 15);
2108 bfd_put_32 (abfd, insn, (bfd_byte *) data + octets);
2109 return bfd_reloc_ok;
2110 }
2111
2112 static bfd_reloc_status_type
2113 ppc_elf_unhandled_reloc (bfd *abfd,
2114 arelent *reloc_entry,
2115 asymbol *symbol,
2116 void *data,
2117 asection *input_section,
2118 bfd *output_bfd,
2119 char **error_message)
2120 {
2121 /* If this is a relocatable link (output_bfd test tells us), just
2122 call the generic function. Any adjustment will be done at final
2123 link time. */
2124 if (output_bfd != NULL)
2125 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2126 input_section, output_bfd, error_message);
2127
2128 if (error_message != NULL)
2129 {
2130 static char buf[60];
2131 sprintf (buf, _("generic linker can't handle %s"),
2132 reloc_entry->howto->name);
2133 *error_message = buf;
2134 }
2135 return bfd_reloc_dangerous;
2136 }
2137 \f
2138 /* Sections created by the linker. */
2139
2140 typedef struct elf_linker_section
2141 {
2142 /* Pointer to the bfd section. */
2143 asection *section;
2144 /* Section name. */
2145 const char *name;
2146 /* Associated bss section name. */
2147 const char *bss_name;
2148 /* Associated symbol name. */
2149 const char *sym_name;
2150 /* Associated symbol. */
2151 struct elf_link_hash_entry *sym;
2152 } elf_linker_section_t;
2153
2154 /* Linked list of allocated pointer entries. This hangs off of the
2155 symbol lists, and provides allows us to return different pointers,
2156 based on different addend's. */
2157
2158 typedef struct elf_linker_section_pointers
2159 {
2160 /* next allocated pointer for this symbol */
2161 struct elf_linker_section_pointers *next;
2162 /* offset of pointer from beginning of section */
2163 bfd_vma offset;
2164 /* addend used */
2165 bfd_vma addend;
2166 /* which linker section this is */
2167 elf_linker_section_t *lsect;
2168 } elf_linker_section_pointers_t;
2169
2170 struct ppc_elf_obj_tdata
2171 {
2172 struct elf_obj_tdata elf;
2173
2174 /* A mapping from local symbols to offsets into the various linker
2175 sections added. This is index by the symbol index. */
2176 elf_linker_section_pointers_t **linker_section_pointers;
2177
2178 /* Flags used to auto-detect plt type. */
2179 unsigned int makes_plt_call : 1;
2180 unsigned int has_rel16 : 1;
2181 };
2182
2183 #define ppc_elf_tdata(bfd) \
2184 ((struct ppc_elf_obj_tdata *) (bfd)->tdata.any)
2185
2186 #define elf_local_ptr_offsets(bfd) \
2187 (ppc_elf_tdata (bfd)->linker_section_pointers)
2188
2189 #define is_ppc_elf(bfd) \
2190 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
2191 && elf_object_id (bfd) == PPC32_ELF_DATA)
2192
2193 /* Override the generic function because we store some extras. */
2194
2195 static bfd_boolean
2196 ppc_elf_mkobject (bfd *abfd)
2197 {
2198 return bfd_elf_allocate_object (abfd, sizeof (struct ppc_elf_obj_tdata),
2199 PPC32_ELF_DATA);
2200 }
2201
2202 /* When defaulting arch/mach, decode apuinfo to find a better match. */
2203
2204 bfd_boolean
2205 _bfd_elf_ppc_set_arch (bfd *abfd)
2206 {
2207 unsigned long mach = 0;
2208 asection *s;
2209 unsigned char *contents;
2210
2211 if (abfd->arch_info->bits_per_word == 32
2212 && bfd_big_endian (abfd))
2213 {
2214
2215 for (s = abfd->sections; s != NULL; s = s->next)
2216 if ((elf_section_data (s)->this_hdr.sh_flags & SHF_PPC_VLE) != 0)
2217 break;
2218 if (s != NULL)
2219 mach = bfd_mach_ppc_vle;
2220 }
2221
2222 if (mach == 0)
2223 {
2224 s = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2225 if (s != NULL && bfd_malloc_and_get_section (abfd, s, &contents))
2226 {
2227 unsigned int apuinfo_size = bfd_get_32 (abfd, contents + 4);
2228 unsigned int i;
2229
2230 for (i = 20; i < apuinfo_size + 20 && i + 4 <= s->size; i += 4)
2231 {
2232 unsigned int val = bfd_get_32 (abfd, contents + i);
2233 switch (val >> 16)
2234 {
2235 case PPC_APUINFO_PMR:
2236 case PPC_APUINFO_RFMCI:
2237 if (mach == 0)
2238 mach = bfd_mach_ppc_titan;
2239 break;
2240
2241 case PPC_APUINFO_ISEL:
2242 case PPC_APUINFO_CACHELCK:
2243 if (mach == bfd_mach_ppc_titan)
2244 mach = bfd_mach_ppc_e500mc;
2245 break;
2246
2247 case PPC_APUINFO_SPE:
2248 case PPC_APUINFO_EFS:
2249 case PPC_APUINFO_BRLOCK:
2250 if (mach != bfd_mach_ppc_vle)
2251 mach = bfd_mach_ppc_e500;
2252 break;
2253
2254 case PPC_APUINFO_VLE:
2255 mach = bfd_mach_ppc_vle;
2256 break;
2257
2258 default:
2259 mach = -1ul;
2260 }
2261 }
2262 free (contents);
2263 }
2264 }
2265
2266 if (mach != 0 && mach != -1ul)
2267 {
2268 const bfd_arch_info_type *arch;
2269
2270 for (arch = abfd->arch_info->next; arch; arch = arch->next)
2271 if (arch->mach == mach)
2272 {
2273 abfd->arch_info = arch;
2274 break;
2275 }
2276 }
2277 return TRUE;
2278 }
2279
2280 /* Fix bad default arch selected for a 32 bit input bfd when the
2281 default is 64 bit. Also select arch based on apuinfo. */
2282
2283 static bfd_boolean
2284 ppc_elf_object_p (bfd *abfd)
2285 {
2286 if (!abfd->arch_info->the_default)
2287 return TRUE;
2288
2289 if (abfd->arch_info->bits_per_word == 64)
2290 {
2291 Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd);
2292
2293 if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS32)
2294 {
2295 /* Relies on arch after 64 bit default being 32 bit default. */
2296 abfd->arch_info = abfd->arch_info->next;
2297 BFD_ASSERT (abfd->arch_info->bits_per_word == 32);
2298 }
2299 }
2300 return _bfd_elf_ppc_set_arch (abfd);
2301 }
2302
2303 /* Function to set whether a module needs the -mrelocatable bit set. */
2304
2305 static bfd_boolean
2306 ppc_elf_set_private_flags (bfd *abfd, flagword flags)
2307 {
2308 BFD_ASSERT (!elf_flags_init (abfd)
2309 || elf_elfheader (abfd)->e_flags == flags);
2310
2311 elf_elfheader (abfd)->e_flags = flags;
2312 elf_flags_init (abfd) = TRUE;
2313 return TRUE;
2314 }
2315
2316 /* Support for core dump NOTE sections. */
2317
2318 static bfd_boolean
2319 ppc_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
2320 {
2321 int offset;
2322 unsigned int size;
2323
2324 switch (note->descsz)
2325 {
2326 default:
2327 return FALSE;
2328
2329 case 268: /* Linux/PPC. */
2330 /* pr_cursig */
2331 elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12);
2332
2333 /* pr_pid */
2334 elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 24);
2335
2336 /* pr_reg */
2337 offset = 72;
2338 size = 192;
2339
2340 break;
2341 }
2342
2343 /* Make a ".reg/999" section. */
2344 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
2345 size, note->descpos + offset);
2346 }
2347
2348 static bfd_boolean
2349 ppc_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
2350 {
2351 switch (note->descsz)
2352 {
2353 default:
2354 return FALSE;
2355
2356 case 128: /* Linux/PPC elf_prpsinfo. */
2357 elf_tdata (abfd)->core->pid
2358 = bfd_get_32 (abfd, note->descdata + 16);
2359 elf_tdata (abfd)->core->program
2360 = _bfd_elfcore_strndup (abfd, note->descdata + 32, 16);
2361 elf_tdata (abfd)->core->command
2362 = _bfd_elfcore_strndup (abfd, note->descdata + 48, 80);
2363 }
2364
2365 /* Note that for some reason, a spurious space is tacked
2366 onto the end of the args in some (at least one anyway)
2367 implementations, so strip it off if it exists. */
2368
2369 {
2370 char *command = elf_tdata (abfd)->core->command;
2371 int n = strlen (command);
2372
2373 if (0 < n && command[n - 1] == ' ')
2374 command[n - 1] = '\0';
2375 }
2376
2377 return TRUE;
2378 }
2379
2380 char *
2381 elfcore_write_ppc_linux_prpsinfo32
2382 (bfd *abfd,
2383 char *buf,
2384 int *bufsiz,
2385 const struct elf_internal_linux_prpsinfo *prpsinfo)
2386 {
2387 struct elf_external_ppc_linux_prpsinfo32 data;
2388
2389 swap_ppc_linux_prpsinfo32_out (abfd, prpsinfo, &data);
2390 return elfcore_write_note (abfd, buf, bufsiz,
2391 "CORE", NT_PRPSINFO, &data, sizeof (data));
2392 }
2393
2394 static char *
2395 ppc_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type, ...)
2396 {
2397 switch (note_type)
2398 {
2399 default:
2400 return NULL;
2401
2402 case NT_PRPSINFO:
2403 {
2404 char data[128];
2405 va_list ap;
2406
2407 va_start (ap, note_type);
2408 memset (data, 0, sizeof (data));
2409 strncpy (data + 32, va_arg (ap, const char *), 16);
2410 strncpy (data + 48, va_arg (ap, const char *), 80);
2411 va_end (ap);
2412 return elfcore_write_note (abfd, buf, bufsiz,
2413 "CORE", note_type, data, sizeof (data));
2414 }
2415
2416 case NT_PRSTATUS:
2417 {
2418 char data[268];
2419 va_list ap;
2420 long pid;
2421 int cursig;
2422 const void *greg;
2423
2424 va_start (ap, note_type);
2425 memset (data, 0, 72);
2426 pid = va_arg (ap, long);
2427 bfd_put_32 (abfd, pid, data + 24);
2428 cursig = va_arg (ap, int);
2429 bfd_put_16 (abfd, cursig, data + 12);
2430 greg = va_arg (ap, const void *);
2431 memcpy (data + 72, greg, 192);
2432 memset (data + 264, 0, 4);
2433 va_end (ap);
2434 return elfcore_write_note (abfd, buf, bufsiz,
2435 "CORE", note_type, data, sizeof (data));
2436 }
2437 }
2438 }
2439
2440 static flagword
2441 ppc_elf_lookup_section_flags (char *flag_name)
2442 {
2443
2444 if (!strcmp (flag_name, "SHF_PPC_VLE"))
2445 return SHF_PPC_VLE;
2446
2447 return 0;
2448 }
2449
2450 /* Return address for Ith PLT stub in section PLT, for relocation REL
2451 or (bfd_vma) -1 if it should not be included. */
2452
2453 static bfd_vma
2454 ppc_elf_plt_sym_val (bfd_vma i ATTRIBUTE_UNUSED,
2455 const asection *plt ATTRIBUTE_UNUSED,
2456 const arelent *rel)
2457 {
2458 return rel->address;
2459 }
2460
2461 /* Handle a PowerPC specific section when reading an object file. This
2462 is called when bfd_section_from_shdr finds a section with an unknown
2463 type. */
2464
2465 static bfd_boolean
2466 ppc_elf_section_from_shdr (bfd *abfd,
2467 Elf_Internal_Shdr *hdr,
2468 const char *name,
2469 int shindex)
2470 {
2471 asection *newsect;
2472 flagword flags;
2473
2474 if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
2475 return FALSE;
2476
2477 newsect = hdr->bfd_section;
2478 flags = bfd_get_section_flags (abfd, newsect);
2479 if (hdr->sh_flags & SHF_EXCLUDE)
2480 flags |= SEC_EXCLUDE;
2481
2482 if (hdr->sh_type == SHT_ORDERED)
2483 flags |= SEC_SORT_ENTRIES;
2484
2485 bfd_set_section_flags (abfd, newsect, flags);
2486 return TRUE;
2487 }
2488
2489 /* Set up any other section flags and such that may be necessary. */
2490
2491 static bfd_boolean
2492 ppc_elf_fake_sections (bfd *abfd ATTRIBUTE_UNUSED,
2493 Elf_Internal_Shdr *shdr,
2494 asection *asect)
2495 {
2496 if ((asect->flags & SEC_SORT_ENTRIES) != 0)
2497 shdr->sh_type = SHT_ORDERED;
2498
2499 return TRUE;
2500 }
2501
2502 /* If we have .sbss2 or .PPC.EMB.sbss0 output sections, we
2503 need to bump up the number of section headers. */
2504
2505 static int
2506 ppc_elf_additional_program_headers (bfd *abfd,
2507 struct bfd_link_info *info ATTRIBUTE_UNUSED)
2508 {
2509 asection *s;
2510 int ret = 0;
2511
2512 s = bfd_get_section_by_name (abfd, ".sbss2");
2513 if (s != NULL && (s->flags & SEC_ALLOC) != 0)
2514 ++ret;
2515
2516 s = bfd_get_section_by_name (abfd, ".PPC.EMB.sbss0");
2517 if (s != NULL && (s->flags & SEC_ALLOC) != 0)
2518 ++ret;
2519
2520 return ret;
2521 }
2522
2523 /* Modify the segment map for VLE executables. */
2524
2525 bfd_boolean
2526 ppc_elf_modify_segment_map (bfd *abfd,
2527 struct bfd_link_info *info ATTRIBUTE_UNUSED)
2528 {
2529 struct elf_segment_map *m;
2530
2531 /* At this point in the link, output sections have already been sorted by
2532 LMA and assigned to segments. All that is left to do is to ensure
2533 there is no mixing of VLE & non-VLE sections in a text segment.
2534 If we find that case, we split the segment.
2535 We maintain the original output section order. */
2536
2537 for (m = elf_seg_map (abfd); m != NULL; m = m->next)
2538 {
2539 struct elf_segment_map *n;
2540 bfd_size_type amt;
2541 unsigned int j, k;
2542 unsigned int p_flags;
2543
2544 if (m->p_type != PT_LOAD || m->count == 0)
2545 continue;
2546
2547 for (p_flags = PF_R, j = 0; j != m->count; ++j)
2548 {
2549 if ((m->sections[j]->flags & SEC_READONLY) == 0)
2550 p_flags |= PF_W;
2551 if ((m->sections[j]->flags & SEC_CODE) != 0)
2552 {
2553 p_flags |= PF_X;
2554 if ((elf_section_flags (m->sections[j]) & SHF_PPC_VLE) != 0)
2555 p_flags |= PF_PPC_VLE;
2556 break;
2557 }
2558 }
2559 if (j != m->count)
2560 while (++j != m->count)
2561 {
2562 unsigned int p_flags1 = PF_R;
2563
2564 if ((m->sections[j]->flags & SEC_READONLY) == 0)
2565 p_flags1 |= PF_W;
2566 if ((m->sections[j]->flags & SEC_CODE) != 0)
2567 {
2568 p_flags1 |= PF_X;
2569 if ((elf_section_flags (m->sections[j]) & SHF_PPC_VLE) != 0)
2570 p_flags1 |= PF_PPC_VLE;
2571 if (((p_flags1 ^ p_flags) & PF_PPC_VLE) != 0)
2572 break;
2573 }
2574 p_flags |= p_flags1;
2575 }
2576 /* If we're splitting a segment which originally contained rw
2577 sections then those sections might now only be in one of the
2578 two parts. So always set p_flags if splitting, even if we
2579 are being called for objcopy with p_flags_valid set. */
2580 if (j != m->count || !m->p_flags_valid)
2581 {
2582 m->p_flags_valid = 1;
2583 m->p_flags = p_flags;
2584 }
2585 if (j == m->count)
2586 continue;
2587
2588 /* Sections 0..j-1 stay in this (current) segment,
2589 the remainder are put in a new segment.
2590 The scan resumes with the new segment. */
2591
2592 amt = sizeof (struct elf_segment_map);
2593 amt += (m->count - j - 1) * sizeof (asection *);
2594 n = (struct elf_segment_map *) bfd_zalloc (abfd, amt);
2595 if (n == NULL)
2596 return FALSE;
2597
2598 n->p_type = PT_LOAD;
2599 n->count = m->count - j;
2600 for (k = 0; k < n->count; ++k)
2601 n->sections[k] = m->sections[j + k];
2602 m->count = j;
2603 m->p_size_valid = 0;
2604 n->next = m->next;
2605 m->next = n;
2606 }
2607
2608 return TRUE;
2609 }
2610
2611 /* Add extra PPC sections -- Note, for now, make .sbss2 and
2612 .PPC.EMB.sbss0 a normal section, and not a bss section so
2613 that the linker doesn't crater when trying to make more than
2614 2 sections. */
2615
2616 static const struct bfd_elf_special_section ppc_elf_special_sections[] =
2617 {
2618 { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, SHF_ALLOC + SHF_EXECINSTR },
2619 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2620 { STRING_COMMA_LEN (".sbss2"), -2, SHT_PROGBITS, SHF_ALLOC },
2621 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2622 { STRING_COMMA_LEN (".sdata2"), -2, SHT_PROGBITS, SHF_ALLOC },
2623 { STRING_COMMA_LEN (".tags"), 0, SHT_ORDERED, SHF_ALLOC },
2624 { STRING_COMMA_LEN (APUINFO_SECTION_NAME), 0, SHT_NOTE, 0 },
2625 { STRING_COMMA_LEN (".PPC.EMB.sbss0"), 0, SHT_PROGBITS, SHF_ALLOC },
2626 { STRING_COMMA_LEN (".PPC.EMB.sdata0"), 0, SHT_PROGBITS, SHF_ALLOC },
2627 { NULL, 0, 0, 0, 0 }
2628 };
2629
2630 /* This is what we want for new plt/got. */
2631 static struct bfd_elf_special_section ppc_alt_plt =
2632 { STRING_COMMA_LEN (".plt"), 0, SHT_PROGBITS, SHF_ALLOC };
2633
2634 static const struct bfd_elf_special_section *
2635 ppc_elf_get_sec_type_attr (bfd *abfd ATTRIBUTE_UNUSED, asection *sec)
2636 {
2637 const struct bfd_elf_special_section *ssect;
2638
2639 /* See if this is one of the special sections. */
2640 if (sec->name == NULL)
2641 return NULL;
2642
2643 ssect = _bfd_elf_get_special_section (sec->name, ppc_elf_special_sections,
2644 sec->use_rela_p);
2645 if (ssect != NULL)
2646 {
2647 if (ssect == ppc_elf_special_sections && (sec->flags & SEC_LOAD) != 0)
2648 ssect = &ppc_alt_plt;
2649 return ssect;
2650 }
2651
2652 return _bfd_elf_get_sec_type_attr (abfd, sec);
2653 }
2654 \f
2655 /* Very simple linked list structure for recording apuinfo values. */
2656 typedef struct apuinfo_list
2657 {
2658 struct apuinfo_list *next;
2659 unsigned long value;
2660 }
2661 apuinfo_list;
2662
2663 static apuinfo_list *head;
2664 static bfd_boolean apuinfo_set;
2665
2666 static void
2667 apuinfo_list_init (void)
2668 {
2669 head = NULL;
2670 apuinfo_set = FALSE;
2671 }
2672
2673 static void
2674 apuinfo_list_add (unsigned long value)
2675 {
2676 apuinfo_list *entry = head;
2677
2678 while (entry != NULL)
2679 {
2680 if (entry->value == value)
2681 return;
2682 entry = entry->next;
2683 }
2684
2685 entry = bfd_malloc (sizeof (* entry));
2686 if (entry == NULL)
2687 return;
2688
2689 entry->value = value;
2690 entry->next = head;
2691 head = entry;
2692 }
2693
2694 static unsigned
2695 apuinfo_list_length (void)
2696 {
2697 apuinfo_list *entry;
2698 unsigned long count;
2699
2700 for (entry = head, count = 0;
2701 entry;
2702 entry = entry->next)
2703 ++ count;
2704
2705 return count;
2706 }
2707
2708 static inline unsigned long
2709 apuinfo_list_element (unsigned long number)
2710 {
2711 apuinfo_list * entry;
2712
2713 for (entry = head;
2714 entry && number --;
2715 entry = entry->next)
2716 ;
2717
2718 return entry ? entry->value : 0;
2719 }
2720
2721 static void
2722 apuinfo_list_finish (void)
2723 {
2724 apuinfo_list *entry;
2725
2726 for (entry = head; entry;)
2727 {
2728 apuinfo_list *next = entry->next;
2729 free (entry);
2730 entry = next;
2731 }
2732
2733 head = NULL;
2734 }
2735
2736 /* Scan the input BFDs and create a linked list of
2737 the APUinfo values that will need to be emitted. */
2738
2739 static void
2740 ppc_elf_begin_write_processing (bfd *abfd, struct bfd_link_info *link_info)
2741 {
2742 bfd *ibfd;
2743 asection *asec;
2744 char *buffer = NULL;
2745 bfd_size_type largest_input_size = 0;
2746 unsigned i;
2747 unsigned long length;
2748 const char *error_message = NULL;
2749
2750 if (link_info == NULL)
2751 return;
2752
2753 apuinfo_list_init ();
2754
2755 /* Read in the input sections contents. */
2756 for (ibfd = link_info->input_bfds; ibfd; ibfd = ibfd->link.next)
2757 {
2758 unsigned long datum;
2759
2760 asec = bfd_get_section_by_name (ibfd, APUINFO_SECTION_NAME);
2761 if (asec == NULL)
2762 continue;
2763
2764 /* xgettext:c-format */
2765 error_message = _("corrupt %s section in %B");
2766 length = asec->size;
2767 if (length < 20)
2768 goto fail;
2769
2770 apuinfo_set = TRUE;
2771 if (largest_input_size < asec->size)
2772 {
2773 if (buffer)
2774 free (buffer);
2775 largest_input_size = asec->size;
2776 buffer = bfd_malloc (largest_input_size);
2777 if (!buffer)
2778 return;
2779 }
2780
2781 if (bfd_seek (ibfd, asec->filepos, SEEK_SET) != 0
2782 || (bfd_bread (buffer, length, ibfd) != length))
2783 {
2784 /* xgettext:c-format */
2785 error_message = _("unable to read in %s section from %B");
2786 goto fail;
2787 }
2788
2789 /* Verify the contents of the header. Note - we have to
2790 extract the values this way in order to allow for a
2791 host whose endian-ness is different from the target. */
2792 datum = bfd_get_32 (ibfd, buffer);
2793 if (datum != sizeof APUINFO_LABEL)
2794 goto fail;
2795
2796 datum = bfd_get_32 (ibfd, buffer + 8);
2797 if (datum != 0x2)
2798 goto fail;
2799
2800 if (strcmp (buffer + 12, APUINFO_LABEL) != 0)
2801 goto fail;
2802
2803 /* Get the number of bytes used for apuinfo entries. */
2804 datum = bfd_get_32 (ibfd, buffer + 4);
2805 if (datum + 20 != length)
2806 goto fail;
2807
2808 /* Scan the apuinfo section, building a list of apuinfo numbers. */
2809 for (i = 0; i < datum; i += 4)
2810 apuinfo_list_add (bfd_get_32 (ibfd, buffer + 20 + i));
2811 }
2812
2813 error_message = NULL;
2814
2815 if (apuinfo_set)
2816 {
2817 /* Compute the size of the output section. */
2818 unsigned num_entries = apuinfo_list_length ();
2819
2820 /* Set the output section size, if it exists. */
2821 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2822
2823 if (asec && ! bfd_set_section_size (abfd, asec, 20 + num_entries * 4))
2824 {
2825 ibfd = abfd;
2826 /* xgettext:c-format */
2827 error_message = _("warning: unable to set size of %s section in %B");
2828 }
2829 }
2830
2831 fail:
2832 if (buffer)
2833 free (buffer);
2834
2835 if (error_message)
2836 _bfd_error_handler (error_message, ibfd, APUINFO_SECTION_NAME);
2837 }
2838
2839 /* Prevent the output section from accumulating the input sections'
2840 contents. We have already stored this in our linked list structure. */
2841
2842 static bfd_boolean
2843 ppc_elf_write_section (bfd *abfd ATTRIBUTE_UNUSED,
2844 struct bfd_link_info *link_info ATTRIBUTE_UNUSED,
2845 asection *asec,
2846 bfd_byte *contents ATTRIBUTE_UNUSED)
2847 {
2848 return apuinfo_set && strcmp (asec->name, APUINFO_SECTION_NAME) == 0;
2849 }
2850
2851 /* Finally we can generate the output section. */
2852
2853 static void
2854 ppc_elf_final_write_processing (bfd *abfd, bfd_boolean linker ATTRIBUTE_UNUSED)
2855 {
2856 bfd_byte *buffer;
2857 asection *asec;
2858 unsigned i;
2859 unsigned num_entries;
2860 bfd_size_type length;
2861
2862 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2863 if (asec == NULL)
2864 return;
2865
2866 if (!apuinfo_set)
2867 return;
2868
2869 length = asec->size;
2870 if (length < 20)
2871 return;
2872
2873 buffer = bfd_malloc (length);
2874 if (buffer == NULL)
2875 {
2876 _bfd_error_handler
2877 (_("failed to allocate space for new APUinfo section."));
2878 return;
2879 }
2880
2881 /* Create the apuinfo header. */
2882 num_entries = apuinfo_list_length ();
2883 bfd_put_32 (abfd, sizeof APUINFO_LABEL, buffer);
2884 bfd_put_32 (abfd, num_entries * 4, buffer + 4);
2885 bfd_put_32 (abfd, 0x2, buffer + 8);
2886 strcpy ((char *) buffer + 12, APUINFO_LABEL);
2887
2888 length = 20;
2889 for (i = 0; i < num_entries; i++)
2890 {
2891 bfd_put_32 (abfd, apuinfo_list_element (i), buffer + length);
2892 length += 4;
2893 }
2894
2895 if (length != asec->size)
2896 _bfd_error_handler (_("failed to compute new APUinfo section."));
2897
2898 if (! bfd_set_section_contents (abfd, asec, buffer, (file_ptr) 0, length))
2899 _bfd_error_handler (_("failed to install new APUinfo section."));
2900
2901 free (buffer);
2902
2903 apuinfo_list_finish ();
2904 }
2905 \f
2906 static bfd_boolean
2907 is_nonpic_glink_stub (bfd *abfd, asection *glink, bfd_vma off)
2908 {
2909 bfd_byte buf[GLINK_ENTRY_SIZE];
2910
2911 if (!bfd_get_section_contents (abfd, glink, buf, off, GLINK_ENTRY_SIZE))
2912 return FALSE;
2913
2914 return ((bfd_get_32 (abfd, buf + 0) & 0xffff0000) == LIS_11
2915 && (bfd_get_32 (abfd, buf + 4) & 0xffff0000) == LWZ_11_11
2916 && bfd_get_32 (abfd, buf + 8) == MTCTR_11
2917 && bfd_get_32 (abfd, buf + 12) == BCTR);
2918 }
2919
2920 static bfd_boolean
2921 section_covers_vma (bfd *abfd ATTRIBUTE_UNUSED, asection *section, void *ptr)
2922 {
2923 bfd_vma vma = *(bfd_vma *) ptr;
2924 return ((section->flags & SEC_ALLOC) != 0
2925 && section->vma <= vma
2926 && vma < section->vma + section->size);
2927 }
2928
2929 static long
2930 ppc_elf_get_synthetic_symtab (bfd *abfd, long symcount, asymbol **syms,
2931 long dynsymcount, asymbol **dynsyms,
2932 asymbol **ret)
2933 {
2934 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
2935 asection *plt, *relplt, *dynamic, *glink;
2936 bfd_vma glink_vma = 0;
2937 bfd_vma resolv_vma = 0;
2938 bfd_vma stub_vma;
2939 asymbol *s;
2940 arelent *p;
2941 long count, i;
2942 size_t size;
2943 char *names;
2944 bfd_byte buf[4];
2945
2946 *ret = NULL;
2947
2948 if ((abfd->flags & (DYNAMIC | EXEC_P)) == 0)
2949 return 0;
2950
2951 if (dynsymcount <= 0)
2952 return 0;
2953
2954 relplt = bfd_get_section_by_name (abfd, ".rela.plt");
2955 if (relplt == NULL)
2956 return 0;
2957
2958 plt = bfd_get_section_by_name (abfd, ".plt");
2959 if (plt == NULL)
2960 return 0;
2961
2962 /* Call common code to handle old-style executable PLTs. */
2963 if (elf_section_flags (plt) & SHF_EXECINSTR)
2964 return _bfd_elf_get_synthetic_symtab (abfd, symcount, syms,
2965 dynsymcount, dynsyms, ret);
2966
2967 /* If this object was prelinked, the prelinker stored the address
2968 of .glink at got[1]. If it wasn't prelinked, got[1] will be zero. */
2969 dynamic = bfd_get_section_by_name (abfd, ".dynamic");
2970 if (dynamic != NULL)
2971 {
2972 bfd_byte *dynbuf, *extdyn, *extdynend;
2973 size_t extdynsize;
2974 void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *);
2975
2976 if (!bfd_malloc_and_get_section (abfd, dynamic, &dynbuf))
2977 return -1;
2978
2979 extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn;
2980 swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in;
2981
2982 extdyn = dynbuf;
2983 extdynend = extdyn + dynamic->size;
2984 for (; extdyn < extdynend; extdyn += extdynsize)
2985 {
2986 Elf_Internal_Dyn dyn;
2987 (*swap_dyn_in) (abfd, extdyn, &dyn);
2988
2989 if (dyn.d_tag == DT_NULL)
2990 break;
2991
2992 if (dyn.d_tag == DT_PPC_GOT)
2993 {
2994 unsigned int g_o_t = dyn.d_un.d_val;
2995 asection *got = bfd_get_section_by_name (abfd, ".got");
2996 if (got != NULL
2997 && bfd_get_section_contents (abfd, got, buf,
2998 g_o_t - got->vma + 4, 4))
2999 glink_vma = bfd_get_32 (abfd, buf);
3000 break;
3001 }
3002 }
3003 free (dynbuf);
3004 }
3005
3006 /* Otherwise we read the first plt entry. */
3007 if (glink_vma == 0)
3008 {
3009 if (bfd_get_section_contents (abfd, plt, buf, 0, 4))
3010 glink_vma = bfd_get_32 (abfd, buf);
3011 }
3012
3013 if (glink_vma == 0)
3014 return 0;
3015
3016 /* The .glink section usually does not survive the final
3017 link; search for the section (usually .text) where the
3018 glink stubs now reside. */
3019 glink = bfd_sections_find_if (abfd, section_covers_vma, &glink_vma);
3020 if (glink == NULL)
3021 return 0;
3022
3023 /* Determine glink PLT resolver by reading the relative branch
3024 from the first glink stub. */
3025 if (bfd_get_section_contents (abfd, glink, buf,
3026 glink_vma - glink->vma, 4))
3027 {
3028 unsigned int insn = bfd_get_32 (abfd, buf);
3029
3030 /* The first glink stub may either branch to the resolver ... */
3031 insn ^= B;
3032 if ((insn & ~0x3fffffc) == 0)
3033 resolv_vma = glink_vma + (insn ^ 0x2000000) - 0x2000000;
3034
3035 /* ... or fall through a bunch of NOPs. */
3036 else if ((insn ^ B ^ NOP) == 0)
3037 for (i = 4;
3038 bfd_get_section_contents (abfd, glink, buf,
3039 glink_vma - glink->vma + i, 4);
3040 i += 4)
3041 if (bfd_get_32 (abfd, buf) != NOP)
3042 {
3043 resolv_vma = glink_vma + i;
3044 break;
3045 }
3046 }
3047
3048 count = relplt->size / sizeof (Elf32_External_Rela);
3049 /* If the stubs are those for -shared/-pie then we might have
3050 multiple stubs for each plt entry. If that is the case then
3051 there is no way to associate stubs with their plt entries short
3052 of figuring out the GOT pointer value used in the stub. */
3053 if (!is_nonpic_glink_stub (abfd, glink,
3054 glink_vma - GLINK_ENTRY_SIZE - glink->vma))
3055 return 0;
3056
3057 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
3058 if (! (*slurp_relocs) (abfd, relplt, dynsyms, TRUE))
3059 return -1;
3060
3061 size = count * sizeof (asymbol);
3062 p = relplt->relocation;
3063 for (i = 0; i < count; i++, p++)
3064 {
3065 size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt");
3066 if (p->addend != 0)
3067 size += sizeof ("+0x") - 1 + 8;
3068 }
3069
3070 size += sizeof (asymbol) + sizeof ("__glink");
3071
3072 if (resolv_vma)
3073 size += sizeof (asymbol) + sizeof ("__glink_PLTresolve");
3074
3075 s = *ret = bfd_malloc (size);
3076 if (s == NULL)
3077 return -1;
3078
3079 stub_vma = glink_vma;
3080 names = (char *) (s + count + 1 + (resolv_vma != 0));
3081 p = relplt->relocation + count - 1;
3082 for (i = 0; i < count; i++)
3083 {
3084 size_t len;
3085
3086 *s = **p->sym_ptr_ptr;
3087 /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since
3088 we are defining a symbol, ensure one of them is set. */
3089 if ((s->flags & BSF_LOCAL) == 0)
3090 s->flags |= BSF_GLOBAL;
3091 s->flags |= BSF_SYNTHETIC;
3092 s->section = glink;
3093 stub_vma -= 16;
3094 if (strcmp ((*p->sym_ptr_ptr)->name, "__tls_get_addr_opt") == 0)
3095 stub_vma -= 32;
3096 s->value = stub_vma - glink->vma;
3097 s->name = names;
3098 s->udata.p = NULL;
3099 len = strlen ((*p->sym_ptr_ptr)->name);
3100 memcpy (names, (*p->sym_ptr_ptr)->name, len);
3101 names += len;
3102 if (p->addend != 0)
3103 {
3104 memcpy (names, "+0x", sizeof ("+0x") - 1);
3105 names += sizeof ("+0x") - 1;
3106 bfd_sprintf_vma (abfd, names, p->addend);
3107 names += strlen (names);
3108 }
3109 memcpy (names, "@plt", sizeof ("@plt"));
3110 names += sizeof ("@plt");
3111 ++s;
3112 --p;
3113 }
3114
3115 /* Add a symbol at the start of the glink branch table. */
3116 memset (s, 0, sizeof *s);
3117 s->the_bfd = abfd;
3118 s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
3119 s->section = glink;
3120 s->value = glink_vma - glink->vma;
3121 s->name = names;
3122 memcpy (names, "__glink", sizeof ("__glink"));
3123 names += sizeof ("__glink");
3124 s++;
3125 count++;
3126
3127 if (resolv_vma)
3128 {
3129 /* Add a symbol for the glink PLT resolver. */
3130 memset (s, 0, sizeof *s);
3131 s->the_bfd = abfd;
3132 s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
3133 s->section = glink;
3134 s->value = resolv_vma - glink->vma;
3135 s->name = names;
3136 memcpy (names, "__glink_PLTresolve", sizeof ("__glink_PLTresolve"));
3137 names += sizeof ("__glink_PLTresolve");
3138 s++;
3139 count++;
3140 }
3141
3142 return count;
3143 }
3144 \f
3145 /* The following functions are specific to the ELF linker, while
3146 functions above are used generally. They appear in this file more
3147 or less in the order in which they are called. eg.
3148 ppc_elf_check_relocs is called early in the link process,
3149 ppc_elf_finish_dynamic_sections is one of the last functions
3150 called. */
3151
3152 /* Track PLT entries needed for a given symbol. We might need more
3153 than one glink entry per symbol when generating a pic binary. */
3154 struct plt_entry
3155 {
3156 struct plt_entry *next;
3157
3158 /* -fPIC uses multiple GOT sections, one per file, called ".got2".
3159 This field stores the offset into .got2 used to initialise the
3160 GOT pointer reg. It will always be at least 32768. (Current
3161 gcc always uses an offset of 32768, but ld -r will pack .got2
3162 sections together resulting in larger offsets). */
3163 bfd_vma addend;
3164
3165 /* The .got2 section. */
3166 asection *sec;
3167
3168 /* PLT refcount or offset. */
3169 union
3170 {
3171 bfd_signed_vma refcount;
3172 bfd_vma offset;
3173 } plt;
3174
3175 /* .glink stub offset. */
3176 bfd_vma glink_offset;
3177 };
3178
3179 /* Of those relocs that might be copied as dynamic relocs, this function
3180 selects those that must be copied when linking a shared library,
3181 even when the symbol is local. */
3182
3183 static int
3184 must_be_dyn_reloc (struct bfd_link_info *info,
3185 enum elf_ppc_reloc_type r_type)
3186 {
3187 switch (r_type)
3188 {
3189 default:
3190 return 1;
3191
3192 case R_PPC_REL24:
3193 case R_PPC_REL14:
3194 case R_PPC_REL14_BRTAKEN:
3195 case R_PPC_REL14_BRNTAKEN:
3196 case R_PPC_REL32:
3197 return 0;
3198
3199 case R_PPC_TPREL32:
3200 case R_PPC_TPREL16:
3201 case R_PPC_TPREL16_LO:
3202 case R_PPC_TPREL16_HI:
3203 case R_PPC_TPREL16_HA:
3204 return !bfd_link_executable (info);
3205 }
3206 }
3207
3208 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
3209 copying dynamic variables from a shared lib into an app's dynbss
3210 section, and instead use a dynamic relocation to point into the
3211 shared lib. */
3212 #define ELIMINATE_COPY_RELOCS 1
3213
3214 /* Used to track dynamic relocations for local symbols. */
3215 struct ppc_dyn_relocs
3216 {
3217 struct ppc_dyn_relocs *next;
3218
3219 /* The input section of the reloc. */
3220 asection *sec;
3221
3222 /* Total number of relocs copied for the input section. */
3223 unsigned int count : 31;
3224
3225 /* Whether this entry is for STT_GNU_IFUNC symbols. */
3226 unsigned int ifunc : 1;
3227 };
3228
3229 /* PPC ELF linker hash entry. */
3230
3231 struct ppc_elf_link_hash_entry
3232 {
3233 struct elf_link_hash_entry elf;
3234
3235 /* If this symbol is used in the linker created sections, the processor
3236 specific backend uses this field to map the field into the offset
3237 from the beginning of the section. */
3238 elf_linker_section_pointers_t *linker_section_pointer;
3239
3240 /* Track dynamic relocs copied for this symbol. */
3241 struct elf_dyn_relocs *dyn_relocs;
3242
3243 /* Contexts in which symbol is used in the GOT (or TOC).
3244 TLS_GD .. TLS_TLS bits are or'd into the mask as the
3245 corresponding relocs are encountered during check_relocs.
3246 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
3247 indicate the corresponding GOT entry type is not needed. */
3248 #define TLS_GD 1 /* GD reloc. */
3249 #define TLS_LD 2 /* LD reloc. */
3250 #define TLS_TPREL 4 /* TPREL reloc, => IE. */
3251 #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
3252 #define TLS_TLS 16 /* Any TLS reloc. */
3253 #define TLS_TPRELGD 32 /* TPREL reloc resulting from GD->IE. */
3254 #define PLT_IFUNC 64 /* STT_GNU_IFUNC. */
3255 char tls_mask;
3256
3257 /* Nonzero if we have seen a small data relocation referring to this
3258 symbol. */
3259 unsigned char has_sda_refs : 1;
3260
3261 /* Flag use of given relocations. */
3262 unsigned char has_addr16_ha : 1;
3263 unsigned char has_addr16_lo : 1;
3264 };
3265
3266 #define ppc_elf_hash_entry(ent) ((struct ppc_elf_link_hash_entry *) (ent))
3267
3268 /* PPC ELF linker hash table. */
3269
3270 struct ppc_elf_link_hash_table
3271 {
3272 struct elf_link_hash_table elf;
3273
3274 /* Various options passed from the linker. */
3275 struct ppc_elf_params *params;
3276
3277 /* Short-cuts to get to dynamic linker sections. */
3278 asection *glink;
3279 asection *dynsbss;
3280 asection *relsbss;
3281 elf_linker_section_t sdata[2];
3282 asection *sbss;
3283 asection *glink_eh_frame;
3284
3285 /* The (unloaded but important) .rela.plt.unloaded on VxWorks. */
3286 asection *srelplt2;
3287
3288 /* Shortcut to __tls_get_addr. */
3289 struct elf_link_hash_entry *tls_get_addr;
3290
3291 /* The bfd that forced an old-style PLT. */
3292 bfd *old_bfd;
3293
3294 /* TLS local dynamic got entry handling. */
3295 union {
3296 bfd_signed_vma refcount;
3297 bfd_vma offset;
3298 } tlsld_got;
3299
3300 /* Offset of branch table to PltResolve function in glink. */
3301 bfd_vma glink_pltresolve;
3302
3303 /* Size of reserved GOT entries. */
3304 unsigned int got_header_size;
3305 /* Non-zero if allocating the header left a gap. */
3306 unsigned int got_gap;
3307
3308 /* The type of PLT we have chosen to use. */
3309 enum ppc_elf_plt_type plt_type;
3310
3311 /* True if the target system is VxWorks. */
3312 unsigned int is_vxworks:1;
3313
3314 /* The size of PLT entries. */
3315 int plt_entry_size;
3316 /* The distance between adjacent PLT slots. */
3317 int plt_slot_size;
3318 /* The size of the first PLT entry. */
3319 int plt_initial_entry_size;
3320
3321 /* Small local sym cache. */
3322 struct sym_cache sym_cache;
3323 };
3324
3325 /* Rename some of the generic section flags to better document how they
3326 are used for ppc32. The flags are only valid for ppc32 elf objects. */
3327
3328 /* Nonzero if this section has TLS related relocations. */
3329 #define has_tls_reloc sec_flg0
3330
3331 /* Nonzero if this section has a call to __tls_get_addr. */
3332 #define has_tls_get_addr_call sec_flg1
3333
3334 /* Get the PPC ELF linker hash table from a link_info structure. */
3335
3336 #define ppc_elf_hash_table(p) \
3337 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
3338 == PPC32_ELF_DATA ? ((struct ppc_elf_link_hash_table *) ((p)->hash)) : NULL)
3339
3340 /* Create an entry in a PPC ELF linker hash table. */
3341
3342 static struct bfd_hash_entry *
3343 ppc_elf_link_hash_newfunc (struct bfd_hash_entry *entry,
3344 struct bfd_hash_table *table,
3345 const char *string)
3346 {
3347 /* Allocate the structure if it has not already been allocated by a
3348 subclass. */
3349 if (entry == NULL)
3350 {
3351 entry = bfd_hash_allocate (table,
3352 sizeof (struct ppc_elf_link_hash_entry));
3353 if (entry == NULL)
3354 return entry;
3355 }
3356
3357 /* Call the allocation method of the superclass. */
3358 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
3359 if (entry != NULL)
3360 {
3361 ppc_elf_hash_entry (entry)->linker_section_pointer = NULL;
3362 ppc_elf_hash_entry (entry)->dyn_relocs = NULL;
3363 ppc_elf_hash_entry (entry)->tls_mask = 0;
3364 ppc_elf_hash_entry (entry)->has_sda_refs = 0;
3365 }
3366
3367 return entry;
3368 }
3369
3370 /* Create a PPC ELF linker hash table. */
3371
3372 static struct bfd_link_hash_table *
3373 ppc_elf_link_hash_table_create (bfd *abfd)
3374 {
3375 struct ppc_elf_link_hash_table *ret;
3376 static struct ppc_elf_params default_params
3377 = { PLT_OLD, 0, 1, 0, 0, 12, 0, 0, 0 };
3378
3379 ret = bfd_zmalloc (sizeof (struct ppc_elf_link_hash_table));
3380 if (ret == NULL)
3381 return NULL;
3382
3383 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd,
3384 ppc_elf_link_hash_newfunc,
3385 sizeof (struct ppc_elf_link_hash_entry),
3386 PPC32_ELF_DATA))
3387 {
3388 free (ret);
3389 return NULL;
3390 }
3391
3392 ret->elf.init_plt_refcount.refcount = 0;
3393 ret->elf.init_plt_refcount.glist = NULL;
3394 ret->elf.init_plt_offset.offset = 0;
3395 ret->elf.init_plt_offset.glist = NULL;
3396
3397 ret->params = &default_params;
3398
3399 ret->sdata[0].name = ".sdata";
3400 ret->sdata[0].sym_name = "_SDA_BASE_";
3401 ret->sdata[0].bss_name = ".sbss";
3402
3403 ret->sdata[1].name = ".sdata2";
3404 ret->sdata[1].sym_name = "_SDA2_BASE_";
3405 ret->sdata[1].bss_name = ".sbss2";
3406
3407 ret->plt_entry_size = 12;
3408 ret->plt_slot_size = 8;
3409 ret->plt_initial_entry_size = 72;
3410
3411 return &ret->elf.root;
3412 }
3413
3414 /* Hook linker params into hash table. */
3415
3416 void
3417 ppc_elf_link_params (struct bfd_link_info *info, struct ppc_elf_params *params)
3418 {
3419 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
3420
3421 if (htab)
3422 htab->params = params;
3423 params->pagesize_p2 = bfd_log2 (params->pagesize);
3424 }
3425
3426 /* Create .got and the related sections. */
3427
3428 static bfd_boolean
3429 ppc_elf_create_got (bfd *abfd, struct bfd_link_info *info)
3430 {
3431 struct ppc_elf_link_hash_table *htab;
3432
3433 if (!_bfd_elf_create_got_section (abfd, info))
3434 return FALSE;
3435
3436 htab = ppc_elf_hash_table (info);
3437 if (!htab->is_vxworks)
3438 {
3439 /* The powerpc .got has a blrl instruction in it. Mark it
3440 executable. */
3441 flagword flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS
3442 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3443 if (!bfd_set_section_flags (abfd, htab->elf.sgot, flags))
3444 return FALSE;
3445 }
3446
3447 return TRUE;
3448 }
3449
3450 /* Create a special linker section, used for R_PPC_EMB_SDAI16 and
3451 R_PPC_EMB_SDA2I16 pointers. These sections become part of .sdata
3452 and .sdata2. Create _SDA_BASE_ and _SDA2_BASE too. */
3453
3454 static bfd_boolean
3455 ppc_elf_create_linker_section (bfd *abfd,
3456 struct bfd_link_info *info,
3457 flagword flags,
3458 elf_linker_section_t *lsect)
3459 {
3460 asection *s;
3461
3462 flags |= (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
3463 | SEC_LINKER_CREATED);
3464
3465 s = bfd_make_section_anyway_with_flags (abfd, lsect->name, flags);
3466 if (s == NULL)
3467 return FALSE;
3468 lsect->section = s;
3469
3470 /* Define the sym on the first section of this name. */
3471 s = bfd_get_section_by_name (abfd, lsect->name);
3472
3473 lsect->sym = _bfd_elf_define_linkage_sym (abfd, info, s, lsect->sym_name);
3474 if (lsect->sym == NULL)
3475 return FALSE;
3476 lsect->sym->root.u.def.value = 0x8000;
3477 return TRUE;
3478 }
3479
3480 static bfd_boolean
3481 ppc_elf_create_glink (bfd *abfd, struct bfd_link_info *info)
3482 {
3483 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
3484 asection *s;
3485 flagword flags;
3486
3487 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY | SEC_HAS_CONTENTS
3488 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3489 s = bfd_make_section_anyway_with_flags (abfd, ".glink", flags);
3490 htab->glink = s;
3491 if (s == NULL
3492 || !bfd_set_section_alignment (abfd, s,
3493 htab->params->ppc476_workaround ? 6 : 4))
3494 return FALSE;
3495
3496 if (!info->no_ld_generated_unwind_info)
3497 {
3498 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
3499 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3500 s = bfd_make_section_anyway_with_flags (abfd, ".eh_frame", flags);
3501 htab->glink_eh_frame = s;
3502 if (s == NULL
3503 || !bfd_set_section_alignment (abfd, s, 2))
3504 return FALSE;
3505 }
3506
3507 flags = SEC_ALLOC | SEC_LINKER_CREATED;
3508 s = bfd_make_section_anyway_with_flags (abfd, ".iplt", flags);
3509 htab->elf.iplt = s;
3510 if (s == NULL
3511 || !bfd_set_section_alignment (abfd, s, 4))
3512 return FALSE;
3513
3514 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
3515 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3516 s = bfd_make_section_anyway_with_flags (abfd, ".rela.iplt", flags);
3517 htab->elf.irelplt = s;
3518 if (s == NULL
3519 || ! bfd_set_section_alignment (abfd, s, 2))
3520 return FALSE;
3521
3522 if (!ppc_elf_create_linker_section (abfd, info, 0,
3523 &htab->sdata[0]))
3524 return FALSE;
3525
3526 if (!ppc_elf_create_linker_section (abfd, info, SEC_READONLY,
3527 &htab->sdata[1]))
3528 return FALSE;
3529
3530 return TRUE;
3531 }
3532
3533 /* We have to create .dynsbss and .rela.sbss here so that they get mapped
3534 to output sections (just like _bfd_elf_create_dynamic_sections has
3535 to create .dynbss and .rela.bss). */
3536
3537 static bfd_boolean
3538 ppc_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
3539 {
3540 struct ppc_elf_link_hash_table *htab;
3541 asection *s;
3542 flagword flags;
3543
3544 htab = ppc_elf_hash_table (info);
3545
3546 if (htab->elf.sgot == NULL
3547 && !ppc_elf_create_got (abfd, info))
3548 return FALSE;
3549
3550 if (!_bfd_elf_create_dynamic_sections (abfd, info))
3551 return FALSE;
3552
3553 if (htab->glink == NULL
3554 && !ppc_elf_create_glink (abfd, info))
3555 return FALSE;
3556
3557 s = bfd_make_section_anyway_with_flags (abfd, ".dynsbss",
3558 SEC_ALLOC | SEC_LINKER_CREATED);
3559 htab->dynsbss = s;
3560 if (s == NULL)
3561 return FALSE;
3562
3563 if (! bfd_link_pic (info))
3564 {
3565 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
3566 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3567 s = bfd_make_section_anyway_with_flags (abfd, ".rela.sbss", flags);
3568 htab->relsbss = s;
3569 if (s == NULL
3570 || ! bfd_set_section_alignment (abfd, s, 2))
3571 return FALSE;
3572 }
3573
3574 if (htab->is_vxworks
3575 && !elf_vxworks_create_dynamic_sections (abfd, info, &htab->srelplt2))
3576 return FALSE;
3577
3578 s = htab->elf.splt;
3579 flags = SEC_ALLOC | SEC_CODE | SEC_LINKER_CREATED;
3580 if (htab->plt_type == PLT_VXWORKS)
3581 /* The VxWorks PLT is a loaded section with contents. */
3582 flags |= SEC_HAS_CONTENTS | SEC_LOAD | SEC_READONLY;
3583 return bfd_set_section_flags (abfd, s, flags);
3584 }
3585
3586 /* Copy the extra info we tack onto an elf_link_hash_entry. */
3587
3588 static void
3589 ppc_elf_copy_indirect_symbol (struct bfd_link_info *info,
3590 struct elf_link_hash_entry *dir,
3591 struct elf_link_hash_entry *ind)
3592 {
3593 struct ppc_elf_link_hash_entry *edir, *eind;
3594
3595 edir = (struct ppc_elf_link_hash_entry *) dir;
3596 eind = (struct ppc_elf_link_hash_entry *) ind;
3597
3598 edir->tls_mask |= eind->tls_mask;
3599 edir->has_sda_refs |= eind->has_sda_refs;
3600
3601 /* If called to transfer flags for a weakdef during processing
3602 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
3603 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
3604 if (!(ELIMINATE_COPY_RELOCS
3605 && eind->elf.root.type != bfd_link_hash_indirect
3606 && edir->elf.dynamic_adjusted))
3607 edir->elf.non_got_ref |= eind->elf.non_got_ref;
3608
3609 edir->elf.ref_dynamic |= eind->elf.ref_dynamic;
3610 edir->elf.ref_regular |= eind->elf.ref_regular;
3611 edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak;
3612 edir->elf.needs_plt |= eind->elf.needs_plt;
3613 edir->elf.pointer_equality_needed |= eind->elf.pointer_equality_needed;
3614
3615 if (eind->dyn_relocs != NULL)
3616 {
3617 if (edir->dyn_relocs != NULL)
3618 {
3619 struct elf_dyn_relocs **pp;
3620 struct elf_dyn_relocs *p;
3621
3622 /* Add reloc counts against the indirect sym to the direct sym
3623 list. Merge any entries against the same section. */
3624 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
3625 {
3626 struct elf_dyn_relocs *q;
3627
3628 for (q = edir->dyn_relocs; q != NULL; q = q->next)
3629 if (q->sec == p->sec)
3630 {
3631 q->pc_count += p->pc_count;
3632 q->count += p->count;
3633 *pp = p->next;
3634 break;
3635 }
3636 if (q == NULL)
3637 pp = &p->next;
3638 }
3639 *pp = edir->dyn_relocs;
3640 }
3641
3642 edir->dyn_relocs = eind->dyn_relocs;
3643 eind->dyn_relocs = NULL;
3644 }
3645
3646 /* If we were called to copy over info for a weak sym, that's all.
3647 You might think dyn_relocs need not be copied over; After all,
3648 both syms will be dynamic or both non-dynamic so we're just
3649 moving reloc accounting around. However, ELIMINATE_COPY_RELOCS
3650 code in ppc_elf_adjust_dynamic_symbol needs to check for
3651 dyn_relocs in read-only sections, and it does so on what is the
3652 DIR sym here. */
3653 if (eind->elf.root.type != bfd_link_hash_indirect)
3654 return;
3655
3656 /* Copy over the GOT refcount entries that we may have already seen to
3657 the symbol which just became indirect. */
3658 edir->elf.got.refcount += eind->elf.got.refcount;
3659 eind->elf.got.refcount = 0;
3660
3661 /* And plt entries. */
3662 if (eind->elf.plt.plist != NULL)
3663 {
3664 if (edir->elf.plt.plist != NULL)
3665 {
3666 struct plt_entry **entp;
3667 struct plt_entry *ent;
3668
3669 for (entp = &eind->elf.plt.plist; (ent = *entp) != NULL; )
3670 {
3671 struct plt_entry *dent;
3672
3673 for (dent = edir->elf.plt.plist; dent != NULL; dent = dent->next)
3674 if (dent->sec == ent->sec && dent->addend == ent->addend)
3675 {
3676 dent->plt.refcount += ent->plt.refcount;
3677 *entp = ent->next;
3678 break;
3679 }
3680 if (dent == NULL)
3681 entp = &ent->next;
3682 }
3683 *entp = edir->elf.plt.plist;
3684 }
3685
3686 edir->elf.plt.plist = eind->elf.plt.plist;
3687 eind->elf.plt.plist = NULL;
3688 }
3689
3690 if (eind->elf.dynindx != -1)
3691 {
3692 if (edir->elf.dynindx != -1)
3693 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
3694 edir->elf.dynstr_index);
3695 edir->elf.dynindx = eind->elf.dynindx;
3696 edir->elf.dynstr_index = eind->elf.dynstr_index;
3697 eind->elf.dynindx = -1;
3698 eind->elf.dynstr_index = 0;
3699 }
3700 }
3701
3702 /* Hook called by the linker routine which adds symbols from an object
3703 file. We use it to put .comm items in .sbss, and not .bss. */
3704
3705 static bfd_boolean
3706 ppc_elf_add_symbol_hook (bfd *abfd,
3707 struct bfd_link_info *info,
3708 Elf_Internal_Sym *sym,
3709 const char **namep ATTRIBUTE_UNUSED,
3710 flagword *flagsp ATTRIBUTE_UNUSED,
3711 asection **secp,
3712 bfd_vma *valp)
3713 {
3714 if (sym->st_shndx == SHN_COMMON
3715 && !bfd_link_relocatable (info)
3716 && is_ppc_elf (info->output_bfd)
3717 && sym->st_size <= elf_gp_size (abfd))
3718 {
3719 /* Common symbols less than or equal to -G nn bytes are automatically
3720 put into .sbss. */
3721 struct ppc_elf_link_hash_table *htab;
3722
3723 htab = ppc_elf_hash_table (info);
3724 if (htab->sbss == NULL)
3725 {
3726 flagword flags = SEC_IS_COMMON | SEC_LINKER_CREATED;
3727
3728 if (!htab->elf.dynobj)
3729 htab->elf.dynobj = abfd;
3730
3731 htab->sbss = bfd_make_section_anyway_with_flags (htab->elf.dynobj,
3732 ".sbss",
3733 flags);
3734 if (htab->sbss == NULL)
3735 return FALSE;
3736 }
3737
3738 *secp = htab->sbss;
3739 *valp = sym->st_size;
3740 }
3741
3742 if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC
3743 && (abfd->flags & DYNAMIC) == 0
3744 && bfd_get_flavour (info->output_bfd) == bfd_target_elf_flavour)
3745 elf_tdata (info->output_bfd)->has_gnu_symbols |= elf_gnu_symbol_ifunc;
3746
3747 return TRUE;
3748 }
3749 \f
3750 /* Find a linker generated pointer with a given addend and type. */
3751
3752 static elf_linker_section_pointers_t *
3753 elf_find_pointer_linker_section
3754 (elf_linker_section_pointers_t *linker_pointers,
3755 bfd_vma addend,
3756 elf_linker_section_t *lsect)
3757 {
3758 for ( ; linker_pointers != NULL; linker_pointers = linker_pointers->next)
3759 if (lsect == linker_pointers->lsect && addend == linker_pointers->addend)
3760 return linker_pointers;
3761
3762 return NULL;
3763 }
3764
3765 /* Allocate a pointer to live in a linker created section. */
3766
3767 static bfd_boolean
3768 elf_allocate_pointer_linker_section (bfd *abfd,
3769 elf_linker_section_t *lsect,
3770 struct elf_link_hash_entry *h,
3771 const Elf_Internal_Rela *rel)
3772 {
3773 elf_linker_section_pointers_t **ptr_linker_section_ptr = NULL;
3774 elf_linker_section_pointers_t *linker_section_ptr;
3775 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
3776 bfd_size_type amt;
3777
3778 BFD_ASSERT (lsect != NULL);
3779
3780 /* Is this a global symbol? */
3781 if (h != NULL)
3782 {
3783 struct ppc_elf_link_hash_entry *eh;
3784
3785 /* Has this symbol already been allocated? If so, our work is done. */
3786 eh = (struct ppc_elf_link_hash_entry *) h;
3787 if (elf_find_pointer_linker_section (eh->linker_section_pointer,
3788 rel->r_addend,
3789 lsect))
3790 return TRUE;
3791
3792 ptr_linker_section_ptr = &eh->linker_section_pointer;
3793 }
3794 else
3795 {
3796 BFD_ASSERT (is_ppc_elf (abfd));
3797
3798 /* Allocation of a pointer to a local symbol. */
3799 elf_linker_section_pointers_t **ptr = elf_local_ptr_offsets (abfd);
3800
3801 /* Allocate a table to hold the local symbols if first time. */
3802 if (!ptr)
3803 {
3804 unsigned int num_symbols = elf_symtab_hdr (abfd).sh_info;
3805
3806 amt = num_symbols;
3807 amt *= sizeof (elf_linker_section_pointers_t *);
3808 ptr = bfd_zalloc (abfd, amt);
3809
3810 if (!ptr)
3811 return FALSE;
3812
3813 elf_local_ptr_offsets (abfd) = ptr;
3814 }
3815
3816 /* Has this symbol already been allocated? If so, our work is done. */
3817 if (elf_find_pointer_linker_section (ptr[r_symndx],
3818 rel->r_addend,
3819 lsect))
3820 return TRUE;
3821
3822 ptr_linker_section_ptr = &ptr[r_symndx];
3823 }
3824
3825 /* Allocate space for a pointer in the linker section, and allocate
3826 a new pointer record from internal memory. */
3827 BFD_ASSERT (ptr_linker_section_ptr != NULL);
3828 amt = sizeof (elf_linker_section_pointers_t);
3829 linker_section_ptr = bfd_alloc (abfd, amt);
3830
3831 if (!linker_section_ptr)
3832 return FALSE;
3833
3834 linker_section_ptr->next = *ptr_linker_section_ptr;
3835 linker_section_ptr->addend = rel->r_addend;
3836 linker_section_ptr->lsect = lsect;
3837 *ptr_linker_section_ptr = linker_section_ptr;
3838
3839 if (!bfd_set_section_alignment (lsect->section->owner, lsect->section, 2))
3840 return FALSE;
3841 linker_section_ptr->offset = lsect->section->size;
3842 lsect->section->size += 4;
3843
3844 #ifdef DEBUG
3845 fprintf (stderr,
3846 "Create pointer in linker section %s, offset = %ld, section size = %ld\n",
3847 lsect->name, (long) linker_section_ptr->offset,
3848 (long) lsect->section->size);
3849 #endif
3850
3851 return TRUE;
3852 }
3853
3854 static struct plt_entry **
3855 update_local_sym_info (bfd *abfd,
3856 Elf_Internal_Shdr *symtab_hdr,
3857 unsigned long r_symndx,
3858 int tls_type)
3859 {
3860 bfd_signed_vma *local_got_refcounts = elf_local_got_refcounts (abfd);
3861 struct plt_entry **local_plt;
3862 char *local_got_tls_masks;
3863
3864 if (local_got_refcounts == NULL)
3865 {
3866 bfd_size_type size = symtab_hdr->sh_info;
3867
3868 size *= (sizeof (*local_got_refcounts)
3869 + sizeof (*local_plt)
3870 + sizeof (*local_got_tls_masks));
3871 local_got_refcounts = bfd_zalloc (abfd, size);
3872 if (local_got_refcounts == NULL)
3873 return NULL;
3874 elf_local_got_refcounts (abfd) = local_got_refcounts;
3875 }
3876
3877 local_plt = (struct plt_entry **) (local_got_refcounts + symtab_hdr->sh_info);
3878 local_got_tls_masks = (char *) (local_plt + symtab_hdr->sh_info);
3879 local_got_tls_masks[r_symndx] |= tls_type;
3880 if (tls_type != PLT_IFUNC)
3881 local_got_refcounts[r_symndx] += 1;
3882 return local_plt + r_symndx;
3883 }
3884
3885 static bfd_boolean
3886 update_plt_info (bfd *abfd, struct plt_entry **plist,
3887 asection *sec, bfd_vma addend)
3888 {
3889 struct plt_entry *ent;
3890
3891 if (addend < 32768)
3892 sec = NULL;
3893 for (ent = *plist; ent != NULL; ent = ent->next)
3894 if (ent->sec == sec && ent->addend == addend)
3895 break;
3896 if (ent == NULL)
3897 {
3898 bfd_size_type amt = sizeof (*ent);
3899 ent = bfd_alloc (abfd, amt);
3900 if (ent == NULL)
3901 return FALSE;
3902 ent->next = *plist;
3903 ent->sec = sec;
3904 ent->addend = addend;
3905 ent->plt.refcount = 0;
3906 *plist = ent;
3907 }
3908 ent->plt.refcount += 1;
3909 return TRUE;
3910 }
3911
3912 static struct plt_entry *
3913 find_plt_ent (struct plt_entry **plist, asection *sec, bfd_vma addend)
3914 {
3915 struct plt_entry *ent;
3916
3917 if (addend < 32768)
3918 sec = NULL;
3919 for (ent = *plist; ent != NULL; ent = ent->next)
3920 if (ent->sec == sec && ent->addend == addend)
3921 break;
3922 return ent;
3923 }
3924
3925 static bfd_boolean
3926 is_branch_reloc (enum elf_ppc_reloc_type r_type)
3927 {
3928 return (r_type == R_PPC_PLTREL24
3929 || r_type == R_PPC_LOCAL24PC
3930 || r_type == R_PPC_REL24
3931 || r_type == R_PPC_REL14
3932 || r_type == R_PPC_REL14_BRTAKEN
3933 || r_type == R_PPC_REL14_BRNTAKEN
3934 || r_type == R_PPC_ADDR24
3935 || r_type == R_PPC_ADDR14
3936 || r_type == R_PPC_ADDR14_BRTAKEN
3937 || r_type == R_PPC_ADDR14_BRNTAKEN
3938 || r_type == R_PPC_VLE_REL24);
3939 }
3940
3941 static void
3942 bad_shared_reloc (bfd *abfd, enum elf_ppc_reloc_type r_type)
3943 {
3944 _bfd_error_handler
3945 /* xgettext:c-format */
3946 (_("%B: relocation %s cannot be used when making a shared object"),
3947 abfd,
3948 ppc_elf_howto_table[r_type]->name);
3949 bfd_set_error (bfd_error_bad_value);
3950 }
3951
3952 /* Look through the relocs for a section during the first phase, and
3953 allocate space in the global offset table or procedure linkage
3954 table. */
3955
3956 static bfd_boolean
3957 ppc_elf_check_relocs (bfd *abfd,
3958 struct bfd_link_info *info,
3959 asection *sec,
3960 const Elf_Internal_Rela *relocs)
3961 {
3962 struct ppc_elf_link_hash_table *htab;
3963 Elf_Internal_Shdr *symtab_hdr;
3964 struct elf_link_hash_entry **sym_hashes;
3965 const Elf_Internal_Rela *rel;
3966 const Elf_Internal_Rela *rel_end;
3967 asection *got2, *sreloc;
3968 struct elf_link_hash_entry *tga;
3969
3970 if (bfd_link_relocatable (info))
3971 return TRUE;
3972
3973 /* Don't do anything special with non-loaded, non-alloced sections.
3974 In particular, any relocs in such sections should not affect GOT
3975 and PLT reference counting (ie. we don't allow them to create GOT
3976 or PLT entries), there's no possibility or desire to optimize TLS
3977 relocs, and there's not much point in propagating relocs to shared
3978 libs that the dynamic linker won't relocate. */
3979 if ((sec->flags & SEC_ALLOC) == 0)
3980 return TRUE;
3981
3982 #ifdef DEBUG
3983 _bfd_error_handler ("ppc_elf_check_relocs called for section %A in %B",
3984 sec, abfd);
3985 #endif
3986
3987 BFD_ASSERT (is_ppc_elf (abfd));
3988
3989 /* Initialize howto table if not already done. */
3990 if (!ppc_elf_howto_table[R_PPC_ADDR32])
3991 ppc_elf_howto_init ();
3992
3993 htab = ppc_elf_hash_table (info);
3994 if (htab->glink == NULL)
3995 {
3996 if (htab->elf.dynobj == NULL)
3997 htab->elf.dynobj = abfd;
3998 if (!ppc_elf_create_glink (htab->elf.dynobj, info))
3999 return FALSE;
4000 }
4001 tga = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
4002 FALSE, FALSE, TRUE);
4003 symtab_hdr = &elf_symtab_hdr (abfd);
4004 sym_hashes = elf_sym_hashes (abfd);
4005 got2 = bfd_get_section_by_name (abfd, ".got2");
4006 sreloc = NULL;
4007
4008 rel_end = relocs + sec->reloc_count;
4009 for (rel = relocs; rel < rel_end; rel++)
4010 {
4011 unsigned long r_symndx;
4012 enum elf_ppc_reloc_type r_type;
4013 struct elf_link_hash_entry *h;
4014 int tls_type;
4015 struct plt_entry **ifunc;
4016
4017 r_symndx = ELF32_R_SYM (rel->r_info);
4018 if (r_symndx < symtab_hdr->sh_info)
4019 h = NULL;
4020 else
4021 {
4022 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4023 while (h->root.type == bfd_link_hash_indirect
4024 || h->root.type == bfd_link_hash_warning)
4025 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4026
4027 /* PR15323, ref flags aren't set for references in the same
4028 object. */
4029 h->root.non_ir_ref = 1;
4030 }
4031
4032 /* If a relocation refers to _GLOBAL_OFFSET_TABLE_, create the .got.
4033 This shows up in particular in an R_PPC_ADDR32 in the eabi
4034 startup code. */
4035 if (h != NULL
4036 && htab->elf.sgot == NULL
4037 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
4038 {
4039 if (htab->elf.dynobj == NULL)
4040 htab->elf.dynobj = abfd;
4041 if (!ppc_elf_create_got (htab->elf.dynobj, info))
4042 return FALSE;
4043 BFD_ASSERT (h == htab->elf.hgot);
4044 }
4045
4046 tls_type = 0;
4047 r_type = ELF32_R_TYPE (rel->r_info);
4048 ifunc = NULL;
4049 if (h == NULL && !htab->is_vxworks)
4050 {
4051 Elf_Internal_Sym *isym = bfd_sym_from_r_symndx (&htab->sym_cache,
4052 abfd, r_symndx);
4053 if (isym == NULL)
4054 return FALSE;
4055
4056 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
4057 {
4058 /* Set PLT_IFUNC flag for this sym, no GOT entry yet. */
4059 ifunc = update_local_sym_info (abfd, symtab_hdr, r_symndx,
4060 PLT_IFUNC);
4061 if (ifunc == NULL)
4062 return FALSE;
4063
4064 /* STT_GNU_IFUNC symbols must have a PLT entry;
4065 In a non-pie executable even when there are
4066 no plt calls. */
4067 if (!bfd_link_pic (info)
4068 || is_branch_reloc (r_type))
4069 {
4070 bfd_vma addend = 0;
4071 if (r_type == R_PPC_PLTREL24)
4072 {
4073 ppc_elf_tdata (abfd)->makes_plt_call = 1;
4074 if (bfd_link_pic (info))
4075 addend = rel->r_addend;
4076 }
4077 if (!update_plt_info (abfd, ifunc, got2, addend))
4078 return FALSE;
4079 }
4080 }
4081 }
4082
4083 if (!htab->is_vxworks
4084 && is_branch_reloc (r_type)
4085 && h != NULL
4086 && h == tga)
4087 {
4088 if (rel != relocs
4089 && (ELF32_R_TYPE (rel[-1].r_info) == R_PPC_TLSGD
4090 || ELF32_R_TYPE (rel[-1].r_info) == R_PPC_TLSLD))
4091 /* We have a new-style __tls_get_addr call with a marker
4092 reloc. */
4093 ;
4094 else
4095 /* Mark this section as having an old-style call. */
4096 sec->has_tls_get_addr_call = 1;
4097 }
4098
4099 switch (r_type)
4100 {
4101 case R_PPC_TLSGD:
4102 case R_PPC_TLSLD:
4103 /* These special tls relocs tie a call to __tls_get_addr with
4104 its parameter symbol. */
4105 break;
4106
4107 case R_PPC_GOT_TLSLD16:
4108 case R_PPC_GOT_TLSLD16_LO:
4109 case R_PPC_GOT_TLSLD16_HI:
4110 case R_PPC_GOT_TLSLD16_HA:
4111 tls_type = TLS_TLS | TLS_LD;
4112 goto dogottls;
4113
4114 case R_PPC_GOT_TLSGD16:
4115 case R_PPC_GOT_TLSGD16_LO:
4116 case R_PPC_GOT_TLSGD16_HI:
4117 case R_PPC_GOT_TLSGD16_HA:
4118 tls_type = TLS_TLS | TLS_GD;
4119 goto dogottls;
4120
4121 case R_PPC_GOT_TPREL16:
4122 case R_PPC_GOT_TPREL16_LO:
4123 case R_PPC_GOT_TPREL16_HI:
4124 case R_PPC_GOT_TPREL16_HA:
4125 if (bfd_link_pic (info))
4126 info->flags |= DF_STATIC_TLS;
4127 tls_type = TLS_TLS | TLS_TPREL;
4128 goto dogottls;
4129
4130 case R_PPC_GOT_DTPREL16:
4131 case R_PPC_GOT_DTPREL16_LO:
4132 case R_PPC_GOT_DTPREL16_HI:
4133 case R_PPC_GOT_DTPREL16_HA:
4134 tls_type = TLS_TLS | TLS_DTPREL;
4135 dogottls:
4136 sec->has_tls_reloc = 1;
4137 /* Fall through. */
4138
4139 /* GOT16 relocations */
4140 case R_PPC_GOT16:
4141 case R_PPC_GOT16_LO:
4142 case R_PPC_GOT16_HI:
4143 case R_PPC_GOT16_HA:
4144 /* This symbol requires a global offset table entry. */
4145 if (htab->elf.sgot == NULL)
4146 {
4147 if (htab->elf.dynobj == NULL)
4148 htab->elf.dynobj = abfd;
4149 if (!ppc_elf_create_got (htab->elf.dynobj, info))
4150 return FALSE;
4151 }
4152 if (h != NULL)
4153 {
4154 h->got.refcount += 1;
4155 ppc_elf_hash_entry (h)->tls_mask |= tls_type;
4156 }
4157 else
4158 /* This is a global offset table entry for a local symbol. */
4159 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, tls_type))
4160 return FALSE;
4161
4162 /* We may also need a plt entry if the symbol turns out to be
4163 an ifunc. */
4164 if (h != NULL && !bfd_link_pic (info))
4165 {
4166 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
4167 return FALSE;
4168 }
4169 break;
4170
4171 /* Indirect .sdata relocation. */
4172 case R_PPC_EMB_SDAI16:
4173 if (bfd_link_pic (info))
4174 {
4175 bad_shared_reloc (abfd, r_type);
4176 return FALSE;
4177 }
4178 htab->sdata[0].sym->ref_regular = 1;
4179 if (!elf_allocate_pointer_linker_section (abfd, &htab->sdata[0],
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 /* Indirect .sdata2 relocation. */
4190 case R_PPC_EMB_SDA2I16:
4191 if (bfd_link_pic (info))
4192 {
4193 bad_shared_reloc (abfd, r_type);
4194 return FALSE;
4195 }
4196 htab->sdata[1].sym->ref_regular = 1;
4197 if (!elf_allocate_pointer_linker_section (abfd, &htab->sdata[1],
4198 h, rel))
4199 return FALSE;
4200 if (h != NULL)
4201 {
4202 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4203 h->non_got_ref = TRUE;
4204 }
4205 break;
4206
4207 case R_PPC_SDAREL16:
4208 htab->sdata[0].sym->ref_regular = 1;
4209 /* Fall through. */
4210
4211 case R_PPC_VLE_SDAREL_LO16A:
4212 case R_PPC_VLE_SDAREL_LO16D:
4213 case R_PPC_VLE_SDAREL_HI16A:
4214 case R_PPC_VLE_SDAREL_HI16D:
4215 case R_PPC_VLE_SDAREL_HA16A:
4216 case R_PPC_VLE_SDAREL_HA16D:
4217 if (h != NULL)
4218 {
4219 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4220 h->non_got_ref = TRUE;
4221 }
4222 break;
4223
4224 case R_PPC_VLE_REL8:
4225 case R_PPC_VLE_REL15:
4226 case R_PPC_VLE_REL24:
4227 case R_PPC_VLE_LO16A:
4228 case R_PPC_VLE_LO16D:
4229 case R_PPC_VLE_HI16A:
4230 case R_PPC_VLE_HI16D:
4231 case R_PPC_VLE_HA16A:
4232 case R_PPC_VLE_HA16D:
4233 break;
4234
4235 case R_PPC_EMB_SDA2REL:
4236 if (bfd_link_pic (info))
4237 {
4238 bad_shared_reloc (abfd, r_type);
4239 return FALSE;
4240 }
4241 htab->sdata[1].sym->ref_regular = 1;
4242 if (h != NULL)
4243 {
4244 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4245 h->non_got_ref = TRUE;
4246 }
4247 break;
4248
4249 case R_PPC_VLE_SDA21_LO:
4250 case R_PPC_VLE_SDA21:
4251 case R_PPC_EMB_SDA21:
4252 case R_PPC_EMB_RELSDA:
4253 if (bfd_link_pic (info))
4254 {
4255 bad_shared_reloc (abfd, r_type);
4256 return FALSE;
4257 }
4258 if (h != NULL)
4259 {
4260 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4261 h->non_got_ref = TRUE;
4262 }
4263 break;
4264
4265 case R_PPC_EMB_NADDR32:
4266 case R_PPC_EMB_NADDR16:
4267 case R_PPC_EMB_NADDR16_LO:
4268 case R_PPC_EMB_NADDR16_HI:
4269 case R_PPC_EMB_NADDR16_HA:
4270 if (bfd_link_pic (info))
4271 {
4272 bad_shared_reloc (abfd, r_type);
4273 return FALSE;
4274 }
4275 if (h != NULL)
4276 h->non_got_ref = TRUE;
4277 break;
4278
4279 case R_PPC_PLTREL24:
4280 if (h == NULL)
4281 break;
4282 /* Fall through */
4283 case R_PPC_PLT32:
4284 case R_PPC_PLTREL32:
4285 case R_PPC_PLT16_LO:
4286 case R_PPC_PLT16_HI:
4287 case R_PPC_PLT16_HA:
4288 #ifdef DEBUG
4289 fprintf (stderr, "Reloc requires a PLT entry\n");
4290 #endif
4291 /* This symbol requires a procedure linkage table entry. */
4292 if (h == NULL)
4293 {
4294 if (ifunc == NULL)
4295 {
4296 /* It does not make sense to have a procedure linkage
4297 table entry for a non-ifunc local symbol. */
4298 info->callbacks->einfo
4299 /* xgettext:c-format */
4300 (_("%P: %H: %s reloc against local symbol\n"),
4301 abfd, sec, rel->r_offset,
4302 ppc_elf_howto_table[r_type]->name);
4303 bfd_set_error (bfd_error_bad_value);
4304 return FALSE;
4305 }
4306 }
4307 else
4308 {
4309 bfd_vma addend = 0;
4310
4311 if (r_type == R_PPC_PLTREL24)
4312 {
4313 ppc_elf_tdata (abfd)->makes_plt_call = 1;
4314 if (bfd_link_pic (info))
4315 addend = rel->r_addend;
4316 }
4317 h->needs_plt = 1;
4318 if (!update_plt_info (abfd, &h->plt.plist, got2, addend))
4319 return FALSE;
4320 }
4321 break;
4322
4323 /* The following relocations don't need to propagate the
4324 relocation if linking a shared object since they are
4325 section relative. */
4326 case R_PPC_SECTOFF:
4327 case R_PPC_SECTOFF_LO:
4328 case R_PPC_SECTOFF_HI:
4329 case R_PPC_SECTOFF_HA:
4330 case R_PPC_DTPREL16:
4331 case R_PPC_DTPREL16_LO:
4332 case R_PPC_DTPREL16_HI:
4333 case R_PPC_DTPREL16_HA:
4334 case R_PPC_TOC16:
4335 break;
4336
4337 case R_PPC_REL16:
4338 case R_PPC_REL16_LO:
4339 case R_PPC_REL16_HI:
4340 case R_PPC_REL16_HA:
4341 case R_PPC_REL16DX_HA:
4342 ppc_elf_tdata (abfd)->has_rel16 = 1;
4343 break;
4344
4345 /* These are just markers. */
4346 case R_PPC_TLS:
4347 case R_PPC_EMB_MRKREF:
4348 case R_PPC_NONE:
4349 case R_PPC_max:
4350 case R_PPC_RELAX:
4351 case R_PPC_RELAX_PLT:
4352 case R_PPC_RELAX_PLTREL24:
4353 break;
4354
4355 /* These should only appear in dynamic objects. */
4356 case R_PPC_COPY:
4357 case R_PPC_GLOB_DAT:
4358 case R_PPC_JMP_SLOT:
4359 case R_PPC_RELATIVE:
4360 case R_PPC_IRELATIVE:
4361 break;
4362
4363 /* These aren't handled yet. We'll report an error later. */
4364 case R_PPC_ADDR30:
4365 case R_PPC_EMB_RELSEC16:
4366 case R_PPC_EMB_RELST_LO:
4367 case R_PPC_EMB_RELST_HI:
4368 case R_PPC_EMB_RELST_HA:
4369 case R_PPC_EMB_BIT_FLD:
4370 break;
4371
4372 /* This refers only to functions defined in the shared library. */
4373 case R_PPC_LOCAL24PC:
4374 if (h != NULL && h == htab->elf.hgot && htab->plt_type == PLT_UNSET)
4375 {
4376 htab->plt_type = PLT_OLD;
4377 htab->old_bfd = abfd;
4378 }
4379 if (h != NULL && h->type == STT_GNU_IFUNC)
4380 {
4381 h->needs_plt = 1;
4382 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
4383 return FALSE;
4384 }
4385 break;
4386
4387 /* This relocation describes the C++ object vtable hierarchy.
4388 Reconstruct it for later use during GC. */
4389 case R_PPC_GNU_VTINHERIT:
4390 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
4391 return FALSE;
4392 break;
4393
4394 /* This relocation describes which C++ vtable entries are actually
4395 used. Record for later use during GC. */
4396 case R_PPC_GNU_VTENTRY:
4397 BFD_ASSERT (h != NULL);
4398 if (h != NULL
4399 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
4400 return FALSE;
4401 break;
4402
4403 /* We shouldn't really be seeing these. */
4404 case R_PPC_TPREL32:
4405 case R_PPC_TPREL16:
4406 case R_PPC_TPREL16_LO:
4407 case R_PPC_TPREL16_HI:
4408 case R_PPC_TPREL16_HA:
4409 if (bfd_link_pic (info))
4410 info->flags |= DF_STATIC_TLS;
4411 goto dodyn;
4412
4413 /* Nor these. */
4414 case R_PPC_DTPMOD32:
4415 case R_PPC_DTPREL32:
4416 goto dodyn;
4417
4418 case R_PPC_REL32:
4419 if (h == NULL
4420 && got2 != NULL
4421 && (sec->flags & SEC_CODE) != 0
4422 && bfd_link_pic (info)
4423 && htab->plt_type == PLT_UNSET)
4424 {
4425 /* Old -fPIC gcc code has .long LCTOC1-LCFx just before
4426 the start of a function, which assembles to a REL32
4427 reference to .got2. If we detect one of these, then
4428 force the old PLT layout because the linker cannot
4429 reliably deduce the GOT pointer value needed for
4430 PLT call stubs. */
4431 asection *s;
4432 Elf_Internal_Sym *isym;
4433
4434 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
4435 abfd, r_symndx);
4436 if (isym == NULL)
4437 return FALSE;
4438
4439 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
4440 if (s == got2)
4441 {
4442 htab->plt_type = PLT_OLD;
4443 htab->old_bfd = abfd;
4444 }
4445 }
4446 if (h == NULL || h == htab->elf.hgot)
4447 break;
4448 /* fall through */
4449
4450 case R_PPC_ADDR32:
4451 case R_PPC_ADDR16:
4452 case R_PPC_ADDR16_LO:
4453 case R_PPC_ADDR16_HI:
4454 case R_PPC_ADDR16_HA:
4455 case R_PPC_UADDR32:
4456 case R_PPC_UADDR16:
4457 if (h != NULL && !bfd_link_pic (info))
4458 {
4459 /* We may need a plt entry if the symbol turns out to be
4460 a function defined in a dynamic object. */
4461 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
4462 return FALSE;
4463
4464 /* We may need a copy reloc too. */
4465 h->non_got_ref = 1;
4466 h->pointer_equality_needed = 1;
4467 if (r_type == R_PPC_ADDR16_HA)
4468 ppc_elf_hash_entry (h)->has_addr16_ha = 1;
4469 if (r_type == R_PPC_ADDR16_LO)
4470 ppc_elf_hash_entry (h)->has_addr16_lo = 1;
4471 }
4472 goto dodyn;
4473
4474 case R_PPC_REL24:
4475 case R_PPC_REL14:
4476 case R_PPC_REL14_BRTAKEN:
4477 case R_PPC_REL14_BRNTAKEN:
4478 if (h == NULL)
4479 break;
4480 if (h == htab->elf.hgot)
4481 {
4482 if (htab->plt_type == PLT_UNSET)
4483 {
4484 htab->plt_type = PLT_OLD;
4485 htab->old_bfd = abfd;
4486 }
4487 break;
4488 }
4489 /* fall through */
4490
4491 case R_PPC_ADDR24:
4492 case R_PPC_ADDR14:
4493 case R_PPC_ADDR14_BRTAKEN:
4494 case R_PPC_ADDR14_BRNTAKEN:
4495 if (h != NULL && !bfd_link_pic (info))
4496 {
4497 /* We may need a plt entry if the symbol turns out to be
4498 a function defined in a dynamic object. */
4499 h->needs_plt = 1;
4500 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
4501 return FALSE;
4502 break;
4503 }
4504
4505 dodyn:
4506 /* If we are creating a shared library, and this is a reloc
4507 against a global symbol, or a non PC relative reloc
4508 against a local symbol, then we need to copy the reloc
4509 into the shared library. However, if we are linking with
4510 -Bsymbolic, we do not need to copy a reloc against a
4511 global symbol which is defined in an object we are
4512 including in the link (i.e., DEF_REGULAR is set). At
4513 this point we have not seen all the input files, so it is
4514 possible that DEF_REGULAR is not set now but will be set
4515 later (it is never cleared). In case of a weak definition,
4516 DEF_REGULAR may be cleared later by a strong definition in
4517 a shared library. We account for that possibility below by
4518 storing information in the dyn_relocs field of the hash
4519 table entry. A similar situation occurs when creating
4520 shared libraries and symbol visibility changes render the
4521 symbol local.
4522
4523 If on the other hand, we are creating an executable, we
4524 may need to keep relocations for symbols satisfied by a
4525 dynamic library if we manage to avoid copy relocs for the
4526 symbol. */
4527 if ((bfd_link_pic (info)
4528 && (must_be_dyn_reloc (info, r_type)
4529 || (h != NULL
4530 && (!SYMBOLIC_BIND (info, h)
4531 || h->root.type == bfd_link_hash_defweak
4532 || !h->def_regular))))
4533 || (ELIMINATE_COPY_RELOCS
4534 && !bfd_link_pic (info)
4535 && h != NULL
4536 && (h->root.type == bfd_link_hash_defweak
4537 || !h->def_regular)))
4538 {
4539 #ifdef DEBUG
4540 fprintf (stderr,
4541 "ppc_elf_check_relocs needs to "
4542 "create relocation for %s\n",
4543 (h && h->root.root.string
4544 ? h->root.root.string : "<unknown>"));
4545 #endif
4546 if (sreloc == NULL)
4547 {
4548 if (htab->elf.dynobj == NULL)
4549 htab->elf.dynobj = abfd;
4550
4551 sreloc = _bfd_elf_make_dynamic_reloc_section
4552 (sec, htab->elf.dynobj, 2, abfd, /*rela?*/ TRUE);
4553
4554 if (sreloc == NULL)
4555 return FALSE;
4556 }
4557
4558 /* If this is a global symbol, we count the number of
4559 relocations we need for this symbol. */
4560 if (h != NULL)
4561 {
4562 struct elf_dyn_relocs *p;
4563 struct elf_dyn_relocs **rel_head;
4564
4565 rel_head = &ppc_elf_hash_entry (h)->dyn_relocs;
4566 p = *rel_head;
4567 if (p == NULL || p->sec != sec)
4568 {
4569 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
4570 if (p == NULL)
4571 return FALSE;
4572 p->next = *rel_head;
4573 *rel_head = p;
4574 p->sec = sec;
4575 p->count = 0;
4576 p->pc_count = 0;
4577 }
4578 p->count += 1;
4579 if (!must_be_dyn_reloc (info, r_type))
4580 p->pc_count += 1;
4581 }
4582 else
4583 {
4584 /* Track dynamic relocs needed for local syms too.
4585 We really need local syms available to do this
4586 easily. Oh well. */
4587 struct ppc_dyn_relocs *p;
4588 struct ppc_dyn_relocs **rel_head;
4589 bfd_boolean is_ifunc;
4590 asection *s;
4591 void *vpp;
4592 Elf_Internal_Sym *isym;
4593
4594 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
4595 abfd, r_symndx);
4596 if (isym == NULL)
4597 return FALSE;
4598
4599 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
4600 if (s == NULL)
4601 s = sec;
4602
4603 vpp = &elf_section_data (s)->local_dynrel;
4604 rel_head = (struct ppc_dyn_relocs **) vpp;
4605 is_ifunc = ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC;
4606 p = *rel_head;
4607 if (p != NULL && p->sec == sec && p->ifunc != is_ifunc)
4608 p = p->next;
4609 if (p == NULL || p->sec != sec || p->ifunc != is_ifunc)
4610 {
4611 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
4612 if (p == NULL)
4613 return FALSE;
4614 p->next = *rel_head;
4615 *rel_head = p;
4616 p->sec = sec;
4617 p->ifunc = is_ifunc;
4618 p->count = 0;
4619 }
4620 p->count += 1;
4621 }
4622 }
4623
4624 break;
4625 }
4626 }
4627
4628 return TRUE;
4629 }
4630 \f
4631 /* Warn for conflicting Tag_GNU_Power_ABI_FP attributes between IBFD
4632 and OBFD, and merge non-conflicting ones. */
4633 void
4634 _bfd_elf_ppc_merge_fp_attributes (bfd *ibfd, struct bfd_link_info *info)
4635 {
4636 bfd *obfd = info->output_bfd;
4637 obj_attribute *in_attr, *in_attrs;
4638 obj_attribute *out_attr, *out_attrs;
4639
4640 in_attrs = elf_known_obj_attributes (ibfd)[OBJ_ATTR_GNU];
4641 out_attrs = elf_known_obj_attributes (obfd)[OBJ_ATTR_GNU];
4642
4643 in_attr = &in_attrs[Tag_GNU_Power_ABI_FP];
4644 out_attr = &out_attrs[Tag_GNU_Power_ABI_FP];
4645
4646 if (in_attr->i != out_attr->i)
4647 {
4648 int in_fp = in_attr->i & 3;
4649 int out_fp = out_attr->i & 3;
4650
4651 if (in_fp == 0)
4652 ;
4653 else if (out_fp == 0)
4654 {
4655 out_attr->type = 1;
4656 out_attr->i ^= in_fp;
4657 }
4658 else if (out_fp != 2 && in_fp == 2)
4659 _bfd_error_handler
4660 /* xgettext:c-format */
4661 (_("Warning: %B uses hard float, %B uses soft float"), obfd, ibfd);
4662 else if (out_fp == 2 && in_fp != 2)
4663 _bfd_error_handler
4664 /* xgettext:c-format */
4665 (_("Warning: %B uses hard float, %B uses soft float"), ibfd, obfd);
4666 else if (out_fp == 1 && in_fp == 3)
4667 _bfd_error_handler
4668 /* xgettext:c-format */
4669 (_("Warning: %B uses double-precision hard float, "
4670 "%B uses single-precision hard float"), obfd, ibfd);
4671 else if (out_fp == 3 && in_fp == 1)
4672 _bfd_error_handler
4673 /* xgettext:c-format */
4674 (_("Warning: %B uses double-precision hard float, "
4675 "%B uses single-precision hard float"), ibfd, obfd);
4676
4677 in_fp = in_attr->i & 0xc;
4678 out_fp = out_attr->i & 0xc;
4679 if (in_fp == 0)
4680 ;
4681 else if (out_fp == 0)
4682 {
4683 out_attr->type = 1;
4684 out_attr->i ^= in_fp;
4685 }
4686 else if (out_fp != 2 * 4 && in_fp == 2 * 4)
4687 _bfd_error_handler
4688 /* xgettext:c-format */
4689 (_("Warning: %B uses 64-bit long double, "
4690 "%B uses 128-bit long double"), ibfd, obfd);
4691 else if (in_fp != 2 * 4 && out_fp == 2 * 4)
4692 _bfd_error_handler
4693 /* xgettext:c-format */
4694 (_("Warning: %B uses 64-bit long double, "
4695 "%B uses 128-bit long double"), obfd, ibfd);
4696 else if (out_fp == 1 * 4 && in_fp == 3 * 4)
4697 _bfd_error_handler
4698 /* xgettext:c-format */
4699 (_("Warning: %B uses IBM long double, "
4700 "%B uses IEEE long double"), ibfd, obfd);
4701 else if (out_fp == 3 * 4 && in_fp == 1 * 4)
4702 _bfd_error_handler
4703 /* xgettext:c-format */
4704 (_("Warning: %B uses IBM long double, "
4705 "%B uses IEEE long double"), obfd, ibfd);
4706 }
4707 }
4708
4709 /* Merge object attributes from IBFD into OBFD. Warn if
4710 there are conflicting attributes. */
4711 static bfd_boolean
4712 ppc_elf_merge_obj_attributes (bfd *ibfd, struct bfd_link_info *info)
4713 {
4714 bfd *obfd;
4715 obj_attribute *in_attr, *in_attrs;
4716 obj_attribute *out_attr, *out_attrs;
4717
4718 _bfd_elf_ppc_merge_fp_attributes (ibfd, info);
4719
4720 obfd = info->output_bfd;
4721 in_attrs = elf_known_obj_attributes (ibfd)[OBJ_ATTR_GNU];
4722 out_attrs = elf_known_obj_attributes (obfd)[OBJ_ATTR_GNU];
4723
4724 /* Check for conflicting Tag_GNU_Power_ABI_Vector attributes and
4725 merge non-conflicting ones. */
4726 in_attr = &in_attrs[Tag_GNU_Power_ABI_Vector];
4727 out_attr = &out_attrs[Tag_GNU_Power_ABI_Vector];
4728 if (in_attr->i != out_attr->i)
4729 {
4730 int in_vec = in_attr->i & 3;
4731 int out_vec = out_attr->i & 3;
4732
4733 if (in_vec == 0)
4734 ;
4735 else if (out_vec == 0)
4736 {
4737 out_attr->type = 1;
4738 out_attr->i = in_vec;
4739 }
4740 /* For now, allow generic to transition to AltiVec or SPE
4741 without a warning. If GCC marked files with their stack
4742 alignment and used don't-care markings for files which are
4743 not affected by the vector ABI, we could warn about this
4744 case too. */
4745 else if (in_vec == 1)
4746 ;
4747 else if (out_vec == 1)
4748 {
4749 out_attr->type = 1;
4750 out_attr->i = in_vec;
4751 }
4752 else if (out_vec < in_vec)
4753 _bfd_error_handler
4754 /* xgettext:c-format */
4755 (_("Warning: %B uses AltiVec vector ABI, %B uses SPE vector ABI"),
4756 obfd, ibfd);
4757 else if (out_vec > in_vec)
4758 _bfd_error_handler
4759 /* xgettext:c-format */
4760 (_("Warning: %B uses AltiVec vector ABI, %B uses SPE vector ABI"),
4761 ibfd, obfd);
4762 }
4763
4764 /* Check for conflicting Tag_GNU_Power_ABI_Struct_Return attributes
4765 and merge non-conflicting ones. */
4766 in_attr = &in_attrs[Tag_GNU_Power_ABI_Struct_Return];
4767 out_attr = &out_attrs[Tag_GNU_Power_ABI_Struct_Return];
4768 if (in_attr->i != out_attr->i)
4769 {
4770 int in_struct = in_attr->i & 3;
4771 int out_struct = out_attr->i & 3;
4772
4773 if (in_struct == 0 || in_struct == 3)
4774 ;
4775 else if (out_struct == 0)
4776 {
4777 out_attr->type = 1;
4778 out_attr->i = in_struct;
4779 }
4780 else if (out_struct < in_struct)
4781 _bfd_error_handler
4782 /* xgettext:c-format */
4783 (_("Warning: %B uses r3/r4 for small structure returns, "
4784 "%B uses memory"), obfd, ibfd);
4785 else if (out_struct > in_struct)
4786 _bfd_error_handler
4787 /* xgettext:c-format */
4788 (_("Warning: %B uses r3/r4 for small structure returns, "
4789 "%B uses memory"), ibfd, obfd);
4790 }
4791
4792 /* Merge Tag_compatibility attributes and any common GNU ones. */
4793 _bfd_elf_merge_object_attributes (ibfd, info);
4794
4795 return TRUE;
4796 }
4797
4798 /* Merge backend specific data from an object file to the output
4799 object file when linking. */
4800
4801 static bfd_boolean
4802 ppc_elf_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info)
4803 {
4804 bfd *obfd = info->output_bfd;
4805 flagword old_flags;
4806 flagword new_flags;
4807 bfd_boolean error;
4808
4809 if (!is_ppc_elf (ibfd) || !is_ppc_elf (obfd))
4810 return TRUE;
4811
4812 /* Check if we have the same endianness. */
4813 if (! _bfd_generic_verify_endian_match (ibfd, info))
4814 return FALSE;
4815
4816 if (!ppc_elf_merge_obj_attributes (ibfd, info))
4817 return FALSE;
4818
4819 new_flags = elf_elfheader (ibfd)->e_flags;
4820 old_flags = elf_elfheader (obfd)->e_flags;
4821 if (!elf_flags_init (obfd))
4822 {
4823 /* First call, no flags set. */
4824 elf_flags_init (obfd) = TRUE;
4825 elf_elfheader (obfd)->e_flags = new_flags;
4826 }
4827
4828 /* Compatible flags are ok. */
4829 else if (new_flags == old_flags)
4830 ;
4831
4832 /* Incompatible flags. */
4833 else
4834 {
4835 /* Warn about -mrelocatable mismatch. Allow -mrelocatable-lib
4836 to be linked with either. */
4837 error = FALSE;
4838 if ((new_flags & EF_PPC_RELOCATABLE) != 0
4839 && (old_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0)
4840 {
4841 error = TRUE;
4842 _bfd_error_handler
4843 (_("%B: compiled with -mrelocatable and linked with "
4844 "modules compiled normally"), ibfd);
4845 }
4846 else if ((new_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0
4847 && (old_flags & EF_PPC_RELOCATABLE) != 0)
4848 {
4849 error = TRUE;
4850 _bfd_error_handler
4851 (_("%B: compiled normally and linked with "
4852 "modules compiled with -mrelocatable"), ibfd);
4853 }
4854
4855 /* The output is -mrelocatable-lib iff both the input files are. */
4856 if (! (new_flags & EF_PPC_RELOCATABLE_LIB))
4857 elf_elfheader (obfd)->e_flags &= ~EF_PPC_RELOCATABLE_LIB;
4858
4859 /* The output is -mrelocatable iff it can't be -mrelocatable-lib,
4860 but each input file is either -mrelocatable or -mrelocatable-lib. */
4861 if (! (elf_elfheader (obfd)->e_flags & EF_PPC_RELOCATABLE_LIB)
4862 && (new_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE))
4863 && (old_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE)))
4864 elf_elfheader (obfd)->e_flags |= EF_PPC_RELOCATABLE;
4865
4866 /* Do not warn about eabi vs. V.4 mismatch, just or in the bit if
4867 any module uses it. */
4868 elf_elfheader (obfd)->e_flags |= (new_flags & EF_PPC_EMB);
4869
4870 new_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
4871 old_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
4872
4873 /* Warn about any other mismatches. */
4874 if (new_flags != old_flags)
4875 {
4876 error = TRUE;
4877 _bfd_error_handler
4878 /* xgettext:c-format */
4879 (_("%B: uses different e_flags (0x%lx) fields "
4880 "than previous modules (0x%lx)"),
4881 ibfd, (long) new_flags, (long) old_flags);
4882 }
4883
4884 if (error)
4885 {
4886 bfd_set_error (bfd_error_bad_value);
4887 return FALSE;
4888 }
4889 }
4890
4891 return TRUE;
4892 }
4893
4894 static void
4895 ppc_elf_vle_split16 (bfd *input_bfd,
4896 asection *input_section,
4897 unsigned long offset,
4898 bfd_byte *loc,
4899 bfd_vma value,
4900 split16_format_type split16_format,
4901 bfd_boolean fixup)
4902 {
4903 unsigned int insn, opcode, top5;
4904
4905 insn = bfd_get_32 (input_bfd, loc);
4906 opcode = insn & 0xf300f800;
4907 if (opcode == E_OR2I_INSN
4908 || opcode == E_AND2I_DOT_INSN
4909 || opcode == E_OR2IS_INSN
4910 || opcode == E_LIS_INSN
4911 || opcode == E_AND2IS_DOT_INSN)
4912 {
4913 if (split16_format != split16a_type)
4914 {
4915 if (fixup)
4916 split16_format = split16a_type;
4917 else
4918 _bfd_error_handler
4919 /* xgettext:c-format */
4920 (_("%B(%A+0x%lx): expected 16A style relocation on 0x%08x insn"),
4921 input_bfd, input_section, offset, opcode);
4922 }
4923 }
4924 else if (opcode == E_ADD2I_DOT_INSN
4925 || opcode == E_ADD2IS_INSN
4926 || opcode == E_CMP16I_INSN
4927 || opcode == E_MULL2I_INSN
4928 || opcode == E_CMPL16I_INSN
4929 || opcode == E_CMPH16I_INSN
4930 || opcode == E_CMPHL16I_INSN)
4931 {
4932 if (split16_format != split16d_type)
4933 {
4934 if (fixup)
4935 split16_format = split16d_type;
4936 else
4937 _bfd_error_handler
4938 /* xgettext:c-format */
4939 (_("%B(%A+0x%lx): expected 16D style relocation on 0x%08x insn"),
4940 input_bfd, input_section, offset, opcode);
4941 }
4942 }
4943 top5 = value & 0xf800;
4944 top5 = top5 << (split16_format == split16a_type ? 5 : 9);
4945 insn &= (split16_format == split16a_type ? ~0x1f07ff : ~0x1f007ff);
4946 insn |= top5;
4947 insn |= value & 0x7ff;
4948 bfd_put_32 (input_bfd, insn, loc);
4949 }
4950 \f
4951 /* Choose which PLT scheme to use, and set .plt flags appropriately.
4952 Returns -1 on error, 0 for old PLT, 1 for new PLT. */
4953 int
4954 ppc_elf_select_plt_layout (bfd *output_bfd ATTRIBUTE_UNUSED,
4955 struct bfd_link_info *info)
4956 {
4957 struct ppc_elf_link_hash_table *htab;
4958 flagword flags;
4959
4960 htab = ppc_elf_hash_table (info);
4961
4962 if (htab->plt_type == PLT_UNSET)
4963 {
4964 struct elf_link_hash_entry *h;
4965
4966 if (htab->params->plt_style == PLT_OLD)
4967 htab->plt_type = PLT_OLD;
4968 else if (bfd_link_pic (info)
4969 && htab->elf.dynamic_sections_created
4970 && (h = elf_link_hash_lookup (&htab->elf, "_mcount",
4971 FALSE, FALSE, TRUE)) != NULL
4972 && (h->type == STT_FUNC
4973 || h->needs_plt)
4974 && h->ref_regular
4975 && !(SYMBOL_CALLS_LOCAL (info, h)
4976 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
4977 && h->root.type == bfd_link_hash_undefweak)))
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
5068 /* Update the got, plt and dynamic reloc reference counts for the
5069 section being removed. */
5070
5071 static bfd_boolean
5072 ppc_elf_gc_sweep_hook (bfd *abfd,
5073 struct bfd_link_info *info,
5074 asection *sec,
5075 const Elf_Internal_Rela *relocs)
5076 {
5077 struct ppc_elf_link_hash_table *htab;
5078 Elf_Internal_Shdr *symtab_hdr;
5079 struct elf_link_hash_entry **sym_hashes;
5080 bfd_signed_vma *local_got_refcounts;
5081 const Elf_Internal_Rela *rel, *relend;
5082 asection *got2;
5083
5084 if (bfd_link_relocatable (info))
5085 return TRUE;
5086
5087 if ((sec->flags & SEC_ALLOC) == 0)
5088 return TRUE;
5089
5090 elf_section_data (sec)->local_dynrel = NULL;
5091
5092 htab = ppc_elf_hash_table (info);
5093 symtab_hdr = &elf_symtab_hdr (abfd);
5094 sym_hashes = elf_sym_hashes (abfd);
5095 local_got_refcounts = elf_local_got_refcounts (abfd);
5096 got2 = bfd_get_section_by_name (abfd, ".got2");
5097
5098 relend = relocs + sec->reloc_count;
5099 for (rel = relocs; rel < relend; rel++)
5100 {
5101 unsigned long r_symndx;
5102 enum elf_ppc_reloc_type r_type;
5103 struct elf_link_hash_entry *h = NULL;
5104
5105 r_symndx = ELF32_R_SYM (rel->r_info);
5106 if (r_symndx >= symtab_hdr->sh_info)
5107 {
5108 struct elf_dyn_relocs **pp, *p;
5109 struct ppc_elf_link_hash_entry *eh;
5110
5111 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5112 while (h->root.type == bfd_link_hash_indirect
5113 || h->root.type == bfd_link_hash_warning)
5114 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5115 eh = (struct ppc_elf_link_hash_entry *) h;
5116
5117 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
5118 if (p->sec == sec)
5119 {
5120 /* Everything must go for SEC. */
5121 *pp = p->next;
5122 break;
5123 }
5124 }
5125
5126 r_type = ELF32_R_TYPE (rel->r_info);
5127 if (!htab->is_vxworks
5128 && h == NULL
5129 && local_got_refcounts != NULL
5130 && (!bfd_link_pic (info)
5131 || is_branch_reloc (r_type)))
5132 {
5133 struct plt_entry **local_plt = (struct plt_entry **)
5134 (local_got_refcounts + symtab_hdr->sh_info);
5135 char *local_got_tls_masks = (char *)
5136 (local_plt + symtab_hdr->sh_info);
5137 if ((local_got_tls_masks[r_symndx] & PLT_IFUNC) != 0)
5138 {
5139 struct plt_entry **ifunc = local_plt + r_symndx;
5140 bfd_vma addend = 0;
5141 struct plt_entry *ent;
5142
5143 if (r_type == R_PPC_PLTREL24 && bfd_link_pic (info))
5144 addend = rel->r_addend;
5145 ent = find_plt_ent (ifunc, got2, addend);
5146 if (ent->plt.refcount > 0)
5147 ent->plt.refcount -= 1;
5148 continue;
5149 }
5150 }
5151
5152 switch (r_type)
5153 {
5154 case R_PPC_GOT_TLSLD16:
5155 case R_PPC_GOT_TLSLD16_LO:
5156 case R_PPC_GOT_TLSLD16_HI:
5157 case R_PPC_GOT_TLSLD16_HA:
5158 case R_PPC_GOT_TLSGD16:
5159 case R_PPC_GOT_TLSGD16_LO:
5160 case R_PPC_GOT_TLSGD16_HI:
5161 case R_PPC_GOT_TLSGD16_HA:
5162 case R_PPC_GOT_TPREL16:
5163 case R_PPC_GOT_TPREL16_LO:
5164 case R_PPC_GOT_TPREL16_HI:
5165 case R_PPC_GOT_TPREL16_HA:
5166 case R_PPC_GOT_DTPREL16:
5167 case R_PPC_GOT_DTPREL16_LO:
5168 case R_PPC_GOT_DTPREL16_HI:
5169 case R_PPC_GOT_DTPREL16_HA:
5170 case R_PPC_GOT16:
5171 case R_PPC_GOT16_LO:
5172 case R_PPC_GOT16_HI:
5173 case R_PPC_GOT16_HA:
5174 if (h != NULL)
5175 {
5176 if (h->got.refcount > 0)
5177 h->got.refcount--;
5178 if (!bfd_link_pic (info))
5179 {
5180 struct plt_entry *ent;
5181
5182 ent = find_plt_ent (&h->plt.plist, NULL, 0);
5183 if (ent != NULL && ent->plt.refcount > 0)
5184 ent->plt.refcount -= 1;
5185 }
5186 }
5187 else if (local_got_refcounts != NULL)
5188 {
5189 if (local_got_refcounts[r_symndx] > 0)
5190 local_got_refcounts[r_symndx]--;
5191 }
5192 break;
5193
5194 case R_PPC_REL24:
5195 case R_PPC_REL14:
5196 case R_PPC_REL14_BRTAKEN:
5197 case R_PPC_REL14_BRNTAKEN:
5198 case R_PPC_REL32:
5199 if (h == NULL || h == htab->elf.hgot)
5200 break;
5201 /* Fall through. */
5202
5203 case R_PPC_ADDR32:
5204 case R_PPC_ADDR24:
5205 case R_PPC_ADDR16:
5206 case R_PPC_ADDR16_LO:
5207 case R_PPC_ADDR16_HI:
5208 case R_PPC_ADDR16_HA:
5209 case R_PPC_ADDR14:
5210 case R_PPC_ADDR14_BRTAKEN:
5211 case R_PPC_ADDR14_BRNTAKEN:
5212 case R_PPC_UADDR32:
5213 case R_PPC_UADDR16:
5214 if (bfd_link_pic (info))
5215 break;
5216 /* Fall through. */
5217
5218 case R_PPC_PLT32:
5219 case R_PPC_PLTREL24:
5220 case R_PPC_PLTREL32:
5221 case R_PPC_PLT16_LO:
5222 case R_PPC_PLT16_HI:
5223 case R_PPC_PLT16_HA:
5224 if (h != NULL)
5225 {
5226 bfd_vma addend = 0;
5227 struct plt_entry *ent;
5228
5229 if (r_type == R_PPC_PLTREL24 && bfd_link_pic (info))
5230 addend = rel->r_addend;
5231 ent = find_plt_ent (&h->plt.plist, got2, addend);
5232 if (ent != NULL && ent->plt.refcount > 0)
5233 ent->plt.refcount -= 1;
5234 }
5235 break;
5236
5237 default:
5238 break;
5239 }
5240 }
5241 return TRUE;
5242 }
5243 \f
5244 /* Set plt output section type, htab->tls_get_addr, and call the
5245 generic ELF tls_setup function. */
5246
5247 asection *
5248 ppc_elf_tls_setup (bfd *obfd, struct bfd_link_info *info)
5249 {
5250 struct ppc_elf_link_hash_table *htab;
5251
5252 htab = ppc_elf_hash_table (info);
5253 htab->tls_get_addr = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
5254 FALSE, FALSE, TRUE);
5255 if (htab->plt_type != PLT_NEW)
5256 htab->params->no_tls_get_addr_opt = TRUE;
5257
5258 if (!htab->params->no_tls_get_addr_opt)
5259 {
5260 struct elf_link_hash_entry *opt, *tga;
5261 opt = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_opt",
5262 FALSE, FALSE, TRUE);
5263 if (opt != NULL
5264 && (opt->root.type == bfd_link_hash_defined
5265 || opt->root.type == bfd_link_hash_defweak))
5266 {
5267 /* If glibc supports an optimized __tls_get_addr call stub,
5268 signalled by the presence of __tls_get_addr_opt, and we'll
5269 be calling __tls_get_addr via a plt call stub, then
5270 make __tls_get_addr point to __tls_get_addr_opt. */
5271 tga = htab->tls_get_addr;
5272 if (htab->elf.dynamic_sections_created
5273 && tga != NULL
5274 && (tga->type == STT_FUNC
5275 || tga->needs_plt)
5276 && !(SYMBOL_CALLS_LOCAL (info, tga)
5277 || (ELF_ST_VISIBILITY (tga->other) != STV_DEFAULT
5278 && tga->root.type == bfd_link_hash_undefweak)))
5279 {
5280 struct plt_entry *ent;
5281 for (ent = tga->plt.plist; ent != NULL; ent = ent->next)
5282 if (ent->plt.refcount > 0)
5283 break;
5284 if (ent != NULL)
5285 {
5286 tga->root.type = bfd_link_hash_indirect;
5287 tga->root.u.i.link = &opt->root;
5288 ppc_elf_copy_indirect_symbol (info, opt, tga);
5289 opt->forced_local = 0;
5290 if (opt->dynindx != -1)
5291 {
5292 /* Use __tls_get_addr_opt in dynamic relocations. */
5293 opt->dynindx = -1;
5294 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
5295 opt->dynstr_index);
5296 if (!bfd_elf_link_record_dynamic_symbol (info, opt))
5297 return FALSE;
5298 }
5299 htab->tls_get_addr = opt;
5300 }
5301 }
5302 }
5303 else
5304 htab->params->no_tls_get_addr_opt = TRUE;
5305 }
5306 if (htab->plt_type == PLT_NEW
5307 && htab->elf.splt != NULL
5308 && htab->elf.splt->output_section != NULL)
5309 {
5310 elf_section_type (htab->elf.splt->output_section) = SHT_PROGBITS;
5311 elf_section_flags (htab->elf.splt->output_section) = SHF_ALLOC + SHF_WRITE;
5312 }
5313
5314 return _bfd_elf_tls_setup (obfd, info);
5315 }
5316
5317 /* Return TRUE iff REL is a branch reloc with a global symbol matching
5318 HASH. */
5319
5320 static bfd_boolean
5321 branch_reloc_hash_match (const bfd *ibfd,
5322 const Elf_Internal_Rela *rel,
5323 const struct elf_link_hash_entry *hash)
5324 {
5325 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
5326 enum elf_ppc_reloc_type r_type = ELF32_R_TYPE (rel->r_info);
5327 unsigned int r_symndx = ELF32_R_SYM (rel->r_info);
5328
5329 if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type))
5330 {
5331 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
5332 struct elf_link_hash_entry *h;
5333
5334 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5335 while (h->root.type == bfd_link_hash_indirect
5336 || h->root.type == bfd_link_hash_warning)
5337 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5338 if (h == hash)
5339 return TRUE;
5340 }
5341 return FALSE;
5342 }
5343
5344 /* Run through all the TLS relocs looking for optimization
5345 opportunities. */
5346
5347 bfd_boolean
5348 ppc_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED,
5349 struct bfd_link_info *info)
5350 {
5351 bfd *ibfd;
5352 asection *sec;
5353 struct ppc_elf_link_hash_table *htab;
5354 int pass;
5355
5356 if (!bfd_link_executable (info))
5357 return TRUE;
5358
5359 htab = ppc_elf_hash_table (info);
5360 if (htab == NULL)
5361 return FALSE;
5362
5363 /* Make two passes through the relocs. First time check that tls
5364 relocs involved in setting up a tls_get_addr call are indeed
5365 followed by such a call. If they are not, don't do any tls
5366 optimization. On the second pass twiddle tls_mask flags to
5367 notify relocate_section that optimization can be done, and
5368 adjust got and plt refcounts. */
5369 for (pass = 0; pass < 2; ++pass)
5370 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
5371 {
5372 Elf_Internal_Sym *locsyms = NULL;
5373 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
5374 asection *got2 = bfd_get_section_by_name (ibfd, ".got2");
5375
5376 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
5377 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
5378 {
5379 Elf_Internal_Rela *relstart, *rel, *relend;
5380 int expecting_tls_get_addr = 0;
5381
5382 /* Read the relocations. */
5383 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
5384 info->keep_memory);
5385 if (relstart == NULL)
5386 return FALSE;
5387
5388 relend = relstart + sec->reloc_count;
5389 for (rel = relstart; rel < relend; rel++)
5390 {
5391 enum elf_ppc_reloc_type r_type;
5392 unsigned long r_symndx;
5393 struct elf_link_hash_entry *h = NULL;
5394 char *tls_mask;
5395 char tls_set, tls_clear;
5396 bfd_boolean is_local;
5397 bfd_signed_vma *got_count;
5398
5399 r_symndx = ELF32_R_SYM (rel->r_info);
5400 if (r_symndx >= symtab_hdr->sh_info)
5401 {
5402 struct elf_link_hash_entry **sym_hashes;
5403
5404 sym_hashes = elf_sym_hashes (ibfd);
5405 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5406 while (h->root.type == bfd_link_hash_indirect
5407 || h->root.type == bfd_link_hash_warning)
5408 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5409 }
5410
5411 is_local = FALSE;
5412 if (h == NULL
5413 || !h->def_dynamic)
5414 is_local = TRUE;
5415
5416 r_type = ELF32_R_TYPE (rel->r_info);
5417 /* If this section has old-style __tls_get_addr calls
5418 without marker relocs, then check that each
5419 __tls_get_addr call reloc is preceded by a reloc
5420 that conceivably belongs to the __tls_get_addr arg
5421 setup insn. If we don't find matching arg setup
5422 relocs, don't do any tls optimization. */
5423 if (pass == 0
5424 && sec->has_tls_get_addr_call
5425 && h != NULL
5426 && h == htab->tls_get_addr
5427 && !expecting_tls_get_addr
5428 && is_branch_reloc (r_type))
5429 {
5430 info->callbacks->minfo ("%H __tls_get_addr lost arg, "
5431 "TLS optimization disabled\n",
5432 ibfd, sec, rel->r_offset);
5433 if (elf_section_data (sec)->relocs != relstart)
5434 free (relstart);
5435 return TRUE;
5436 }
5437
5438 expecting_tls_get_addr = 0;
5439 switch (r_type)
5440 {
5441 case R_PPC_GOT_TLSLD16:
5442 case R_PPC_GOT_TLSLD16_LO:
5443 expecting_tls_get_addr = 1;
5444 /* Fall through. */
5445
5446 case R_PPC_GOT_TLSLD16_HI:
5447 case R_PPC_GOT_TLSLD16_HA:
5448 /* These relocs should never be against a symbol
5449 defined in a shared lib. Leave them alone if
5450 that turns out to be the case. */
5451 if (!is_local)
5452 continue;
5453
5454 /* LD -> LE */
5455 tls_set = 0;
5456 tls_clear = TLS_LD;
5457 break;
5458
5459 case R_PPC_GOT_TLSGD16:
5460 case R_PPC_GOT_TLSGD16_LO:
5461 expecting_tls_get_addr = 1;
5462 /* Fall through. */
5463
5464 case R_PPC_GOT_TLSGD16_HI:
5465 case R_PPC_GOT_TLSGD16_HA:
5466 if (is_local)
5467 /* GD -> LE */
5468 tls_set = 0;
5469 else
5470 /* GD -> IE */
5471 tls_set = TLS_TLS | TLS_TPRELGD;
5472 tls_clear = TLS_GD;
5473 break;
5474
5475 case R_PPC_GOT_TPREL16:
5476 case R_PPC_GOT_TPREL16_LO:
5477 case R_PPC_GOT_TPREL16_HI:
5478 case R_PPC_GOT_TPREL16_HA:
5479 if (is_local)
5480 {
5481 /* IE -> LE */
5482 tls_set = 0;
5483 tls_clear = TLS_TPREL;
5484 break;
5485 }
5486 else
5487 continue;
5488
5489 case R_PPC_TLSGD:
5490 case R_PPC_TLSLD:
5491 expecting_tls_get_addr = 2;
5492 tls_set = 0;
5493 tls_clear = 0;
5494 break;
5495
5496 default:
5497 continue;
5498 }
5499
5500 if (pass == 0)
5501 {
5502 if (!expecting_tls_get_addr
5503 || (expecting_tls_get_addr == 1
5504 && !sec->has_tls_get_addr_call))
5505 continue;
5506
5507 if (rel + 1 < relend
5508 && branch_reloc_hash_match (ibfd, rel + 1,
5509 htab->tls_get_addr))
5510 continue;
5511
5512 /* Uh oh, we didn't find the expected call. We
5513 could just mark this symbol to exclude it
5514 from tls optimization but it's safer to skip
5515 the entire optimization. */
5516 info->callbacks->minfo (_("%H arg lost __tls_get_addr, "
5517 "TLS optimization disabled\n"),
5518 ibfd, sec, rel->r_offset);
5519 if (elf_section_data (sec)->relocs != relstart)
5520 free (relstart);
5521 return TRUE;
5522 }
5523
5524 if (expecting_tls_get_addr)
5525 {
5526 struct plt_entry *ent;
5527 bfd_vma addend = 0;
5528
5529 if (bfd_link_pic (info)
5530 && ELF32_R_TYPE (rel[1].r_info) == R_PPC_PLTREL24)
5531 addend = rel[1].r_addend;
5532 ent = find_plt_ent (&htab->tls_get_addr->plt.plist,
5533 got2, addend);
5534 if (ent != NULL && ent->plt.refcount > 0)
5535 ent->plt.refcount -= 1;
5536
5537 if (expecting_tls_get_addr == 2)
5538 continue;
5539 }
5540
5541 if (h != NULL)
5542 {
5543 tls_mask = &ppc_elf_hash_entry (h)->tls_mask;
5544 got_count = &h->got.refcount;
5545 }
5546 else
5547 {
5548 bfd_signed_vma *lgot_refs;
5549 struct plt_entry **local_plt;
5550 char *lgot_masks;
5551
5552 if (locsyms == NULL)
5553 {
5554 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
5555 if (locsyms == NULL)
5556 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
5557 symtab_hdr->sh_info,
5558 0, NULL, NULL, NULL);
5559 if (locsyms == NULL)
5560 {
5561 if (elf_section_data (sec)->relocs != relstart)
5562 free (relstart);
5563 return FALSE;
5564 }
5565 }
5566 lgot_refs = elf_local_got_refcounts (ibfd);
5567 if (lgot_refs == NULL)
5568 abort ();
5569 local_plt = (struct plt_entry **)
5570 (lgot_refs + symtab_hdr->sh_info);
5571 lgot_masks = (char *) (local_plt + symtab_hdr->sh_info);
5572 tls_mask = &lgot_masks[r_symndx];
5573 got_count = &lgot_refs[r_symndx];
5574 }
5575
5576 if (tls_set == 0)
5577 {
5578 /* We managed to get rid of a got entry. */
5579 if (*got_count > 0)
5580 *got_count -= 1;
5581 }
5582
5583 *tls_mask |= tls_set;
5584 *tls_mask &= ~tls_clear;
5585 }
5586
5587 if (elf_section_data (sec)->relocs != relstart)
5588 free (relstart);
5589 }
5590
5591 if (locsyms != NULL
5592 && (symtab_hdr->contents != (unsigned char *) locsyms))
5593 {
5594 if (!info->keep_memory)
5595 free (locsyms);
5596 else
5597 symtab_hdr->contents = (unsigned char *) locsyms;
5598 }
5599 }
5600 return TRUE;
5601 }
5602 \f
5603 /* Return true if we have dynamic relocs that apply to read-only sections. */
5604
5605 static bfd_boolean
5606 readonly_dynrelocs (struct elf_link_hash_entry *h)
5607 {
5608 struct elf_dyn_relocs *p;
5609
5610 for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next)
5611 {
5612 asection *s = p->sec->output_section;
5613
5614 if (s != NULL
5615 && ((s->flags & (SEC_READONLY | SEC_ALLOC))
5616 == (SEC_READONLY | SEC_ALLOC)))
5617 return TRUE;
5618 }
5619 return FALSE;
5620 }
5621
5622 /* Adjust a symbol defined by a dynamic object and referenced by a
5623 regular object. The current definition is in some section of the
5624 dynamic object, but we're not including those sections. We have to
5625 change the definition to something the rest of the link can
5626 understand. */
5627
5628 static bfd_boolean
5629 ppc_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
5630 struct elf_link_hash_entry *h)
5631 {
5632 struct ppc_elf_link_hash_table *htab;
5633 asection *s;
5634
5635 #ifdef DEBUG
5636 fprintf (stderr, "ppc_elf_adjust_dynamic_symbol called for %s\n",
5637 h->root.root.string);
5638 #endif
5639
5640 /* Make sure we know what is going on here. */
5641 htab = ppc_elf_hash_table (info);
5642 BFD_ASSERT (htab->elf.dynobj != NULL
5643 && (h->needs_plt
5644 || h->type == STT_GNU_IFUNC
5645 || h->u.weakdef != NULL
5646 || (h->def_dynamic
5647 && h->ref_regular
5648 && !h->def_regular)));
5649
5650 /* Deal with function syms. */
5651 if (h->type == STT_FUNC
5652 || h->type == STT_GNU_IFUNC
5653 || h->needs_plt)
5654 {
5655 /* Clear procedure linkage table information for any symbol that
5656 won't need a .plt entry. */
5657 struct plt_entry *ent;
5658 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
5659 if (ent->plt.refcount > 0)
5660 break;
5661 if (ent == NULL
5662 || (h->type != STT_GNU_IFUNC
5663 && (SYMBOL_CALLS_LOCAL (info, h)
5664 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
5665 && h->root.type == bfd_link_hash_undefweak))))
5666 {
5667 /* A PLT entry is not required/allowed when:
5668
5669 1. We are not using ld.so; because then the PLT entry
5670 can't be set up, so we can't use one. In this case,
5671 ppc_elf_adjust_dynamic_symbol won't even be called.
5672
5673 2. GC has rendered the entry unused.
5674
5675 3. We know for certain that a call to this symbol
5676 will go to this object, or will remain undefined. */
5677 h->plt.plist = NULL;
5678 h->needs_plt = 0;
5679 h->pointer_equality_needed = 0;
5680 }
5681 else
5682 {
5683 /* Taking a function's address in a read/write section
5684 doesn't require us to define the function symbol in the
5685 executable on a plt call stub. A dynamic reloc can
5686 be used instead. */
5687 if (h->pointer_equality_needed
5688 && h->type != STT_GNU_IFUNC
5689 && !htab->is_vxworks
5690 && !ppc_elf_hash_entry (h)->has_sda_refs
5691 && !readonly_dynrelocs (h))
5692 {
5693 h->pointer_equality_needed = 0;
5694 h->non_got_ref = 0;
5695 }
5696
5697 /* After adjust_dynamic_symbol, non_got_ref set in the
5698 non-shared case means that we have allocated space in
5699 .dynbss for the symbol and thus dyn_relocs for this
5700 symbol should be discarded.
5701 If we get here we know we are making a PLT entry for this
5702 symbol, and in an executable we'd normally resolve
5703 relocations against this symbol to the PLT entry. Allow
5704 dynamic relocs if the reference is weak, and the dynamic
5705 relocs will not cause text relocation. */
5706 else if (!h->ref_regular_nonweak
5707 && h->non_got_ref
5708 && h->type != STT_GNU_IFUNC
5709 && !htab->is_vxworks
5710 && !ppc_elf_hash_entry (h)->has_sda_refs
5711 && !readonly_dynrelocs (h))
5712 h->non_got_ref = 0;
5713 }
5714 h->protected_def = 0;
5715 return TRUE;
5716 }
5717 else
5718 h->plt.plist = NULL;
5719
5720 /* If this is a weak symbol, and there is a real definition, the
5721 processor independent code will have arranged for us to see the
5722 real definition first, and we can just use the same value. */
5723 if (h->u.weakdef != NULL)
5724 {
5725 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
5726 || h->u.weakdef->root.type == bfd_link_hash_defweak);
5727 h->root.u.def.section = h->u.weakdef->root.u.def.section;
5728 h->root.u.def.value = h->u.weakdef->root.u.def.value;
5729 if (ELIMINATE_COPY_RELOCS)
5730 h->non_got_ref = h->u.weakdef->non_got_ref;
5731 return TRUE;
5732 }
5733
5734 /* This is a reference to a symbol defined by a dynamic object which
5735 is not a function. */
5736
5737 /* If we are creating a shared library, we must presume that the
5738 only references to the symbol are via the global offset table.
5739 For such cases we need not do anything here; the relocations will
5740 be handled correctly by relocate_section. */
5741 if (bfd_link_pic (info))
5742 {
5743 h->protected_def = 0;
5744 return TRUE;
5745 }
5746
5747 /* If there are no references to this symbol that do not use the
5748 GOT, we don't need to generate a copy reloc. */
5749 if (!h->non_got_ref)
5750 {
5751 h->protected_def = 0;
5752 return TRUE;
5753 }
5754
5755 /* Protected variables do not work with .dynbss. The copy in
5756 .dynbss won't be used by the shared library with the protected
5757 definition for the variable. Editing to PIC, or text relocations
5758 are preferable to an incorrect program. */
5759 if (h->protected_def)
5760 {
5761 if (ELIMINATE_COPY_RELOCS
5762 && ppc_elf_hash_entry (h)->has_addr16_ha
5763 && ppc_elf_hash_entry (h)->has_addr16_lo
5764 && htab->params->pic_fixup == 0
5765 && info->disable_target_specific_optimizations <= 1)
5766 htab->params->pic_fixup = 1;
5767 h->non_got_ref = 0;
5768 return TRUE;
5769 }
5770
5771 /* If -z nocopyreloc was given, we won't generate them either. */
5772 if (info->nocopyreloc)
5773 {
5774 h->non_got_ref = 0;
5775 return TRUE;
5776 }
5777
5778 /* If we didn't find any dynamic relocs in read-only sections, then
5779 we'll be keeping the dynamic relocs and avoiding the copy reloc.
5780 We can't do this if there are any small data relocations. This
5781 doesn't work on VxWorks, where we can not have dynamic
5782 relocations (other than copy and jump slot relocations) in an
5783 executable. */
5784 if (ELIMINATE_COPY_RELOCS
5785 && !ppc_elf_hash_entry (h)->has_sda_refs
5786 && !htab->is_vxworks
5787 && !h->def_regular
5788 && !readonly_dynrelocs (h))
5789 {
5790 h->non_got_ref = 0;
5791 return TRUE;
5792 }
5793
5794 /* We must allocate the symbol in our .dynbss section, which will
5795 become part of the .bss section of the executable. There will be
5796 an entry for this symbol in the .dynsym section. The dynamic
5797 object will contain position independent code, so all references
5798 from the dynamic object to this symbol will go through the global
5799 offset table. The dynamic linker will use the .dynsym entry to
5800 determine the address it must put in the global offset table, so
5801 both the dynamic object and the regular object will refer to the
5802 same memory location for the variable.
5803
5804 Of course, if the symbol is referenced using SDAREL relocs, we
5805 must instead allocate it in .sbss. */
5806
5807 if (ppc_elf_hash_entry (h)->has_sda_refs)
5808 s = htab->dynsbss;
5809 else if ((h->root.u.def.section->flags & SEC_READONLY) != 0)
5810 s = htab->elf.sdynrelro;
5811 else
5812 s = htab->elf.sdynbss;
5813 BFD_ASSERT (s != NULL);
5814
5815 /* We must generate a R_PPC_COPY reloc to tell the dynamic linker to
5816 copy the initial value out of the dynamic object and into the
5817 runtime process image. We need to remember the offset into the
5818 .rela.bss section we are going to use. */
5819 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
5820 {
5821 asection *srel;
5822
5823 if (ppc_elf_hash_entry (h)->has_sda_refs)
5824 srel = htab->relsbss;
5825 else if ((h->root.u.def.section->flags & SEC_READONLY) != 0)
5826 srel = htab->elf.sreldynrelro;
5827 else
5828 srel = htab->elf.srelbss;
5829 BFD_ASSERT (srel != NULL);
5830 srel->size += sizeof (Elf32_External_Rela);
5831 h->needs_copy = 1;
5832 }
5833
5834 return _bfd_elf_adjust_dynamic_copy (info, h, s);
5835 }
5836 \f
5837 /* Generate a symbol to mark plt call stubs. For non-PIC code the sym is
5838 xxxxxxxx.plt_call32.<callee> where xxxxxxxx is a hex number, usually 0,
5839 specifying the addend on the plt relocation. For -fpic code, the sym
5840 is xxxxxxxx.plt_pic32.<callee>, and for -fPIC
5841 xxxxxxxx.got2.plt_pic32.<callee>. */
5842
5843 static bfd_boolean
5844 add_stub_sym (struct plt_entry *ent,
5845 struct elf_link_hash_entry *h,
5846 struct bfd_link_info *info)
5847 {
5848 struct elf_link_hash_entry *sh;
5849 size_t len1, len2, len3;
5850 char *name;
5851 const char *stub;
5852 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
5853
5854 if (bfd_link_pic (info))
5855 stub = ".plt_pic32.";
5856 else
5857 stub = ".plt_call32.";
5858
5859 len1 = strlen (h->root.root.string);
5860 len2 = strlen (stub);
5861 len3 = 0;
5862 if (ent->sec)
5863 len3 = strlen (ent->sec->name);
5864 name = bfd_malloc (len1 + len2 + len3 + 9);
5865 if (name == NULL)
5866 return FALSE;
5867 sprintf (name, "%08x", (unsigned) ent->addend & 0xffffffff);
5868 if (ent->sec)
5869 memcpy (name + 8, ent->sec->name, len3);
5870 memcpy (name + 8 + len3, stub, len2);
5871 memcpy (name + 8 + len3 + len2, h->root.root.string, len1 + 1);
5872 sh = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
5873 if (sh == NULL)
5874 return FALSE;
5875 if (sh->root.type == bfd_link_hash_new)
5876 {
5877 sh->root.type = bfd_link_hash_defined;
5878 sh->root.u.def.section = htab->glink;
5879 sh->root.u.def.value = ent->glink_offset;
5880 sh->ref_regular = 1;
5881 sh->def_regular = 1;
5882 sh->ref_regular_nonweak = 1;
5883 sh->forced_local = 1;
5884 sh->non_elf = 0;
5885 sh->root.linker_def = 1;
5886 }
5887 return TRUE;
5888 }
5889
5890 /* Allocate NEED contiguous space in .got, and return the offset.
5891 Handles allocation of the got header when crossing 32k. */
5892
5893 static bfd_vma
5894 allocate_got (struct ppc_elf_link_hash_table *htab, unsigned int need)
5895 {
5896 bfd_vma where;
5897 unsigned int max_before_header;
5898
5899 if (htab->plt_type == PLT_VXWORKS)
5900 {
5901 where = htab->elf.sgot->size;
5902 htab->elf.sgot->size += need;
5903 }
5904 else
5905 {
5906 max_before_header = htab->plt_type == PLT_NEW ? 32768 : 32764;
5907 if (need <= htab->got_gap)
5908 {
5909 where = max_before_header - htab->got_gap;
5910 htab->got_gap -= need;
5911 }
5912 else
5913 {
5914 if (htab->elf.sgot->size + need > max_before_header
5915 && htab->elf.sgot->size <= max_before_header)
5916 {
5917 htab->got_gap = max_before_header - htab->elf.sgot->size;
5918 htab->elf.sgot->size = max_before_header + htab->got_header_size;
5919 }
5920 where = htab->elf.sgot->size;
5921 htab->elf.sgot->size += need;
5922 }
5923 }
5924 return where;
5925 }
5926
5927 /* Allocate space in associated reloc sections for dynamic relocs. */
5928
5929 static bfd_boolean
5930 allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
5931 {
5932 struct bfd_link_info *info = inf;
5933 struct ppc_elf_link_hash_entry *eh;
5934 struct ppc_elf_link_hash_table *htab;
5935 struct elf_dyn_relocs *p;
5936
5937 if (h->root.type == bfd_link_hash_indirect)
5938 return TRUE;
5939
5940 htab = ppc_elf_hash_table (info);
5941 if (htab->elf.dynamic_sections_created
5942 || h->type == STT_GNU_IFUNC)
5943 {
5944 struct plt_entry *ent;
5945 bfd_boolean doneone = FALSE;
5946 bfd_vma plt_offset = 0, glink_offset = 0;
5947 bfd_boolean dyn;
5948
5949 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
5950 if (ent->plt.refcount > 0)
5951 {
5952 /* Make sure this symbol is output as a dynamic symbol. */
5953 if (h->dynindx == -1
5954 && !h->forced_local
5955 && !h->def_regular
5956 && htab->elf.dynamic_sections_created)
5957 {
5958 if (! bfd_elf_link_record_dynamic_symbol (info, h))
5959 return FALSE;
5960 }
5961
5962 dyn = htab->elf.dynamic_sections_created;
5963 if (bfd_link_pic (info)
5964 || h->type == STT_GNU_IFUNC
5965 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))
5966 {
5967 asection *s = htab->elf.splt;
5968 if (!dyn || h->dynindx == -1)
5969 s = htab->elf.iplt;
5970
5971 if (htab->plt_type == PLT_NEW || !dyn || h->dynindx == -1)
5972 {
5973 if (!doneone)
5974 {
5975 plt_offset = s->size;
5976 s->size += 4;
5977 }
5978 ent->plt.offset = plt_offset;
5979
5980 s = htab->glink;
5981 if (!doneone || bfd_link_pic (info))
5982 {
5983 glink_offset = s->size;
5984 s->size += GLINK_ENTRY_SIZE;
5985 if (h == htab->tls_get_addr
5986 && !htab->params->no_tls_get_addr_opt)
5987 s->size += TLS_GET_ADDR_GLINK_SIZE - GLINK_ENTRY_SIZE;
5988 }
5989 if (!doneone
5990 && !bfd_link_pic (info)
5991 && h->def_dynamic
5992 && !h->def_regular)
5993 {
5994 h->root.u.def.section = s;
5995 h->root.u.def.value = glink_offset;
5996 }
5997 ent->glink_offset = glink_offset;
5998
5999 if (htab->params->emit_stub_syms
6000 && !add_stub_sym (ent, h, info))
6001 return FALSE;
6002 }
6003 else
6004 {
6005 if (!doneone)
6006 {
6007 /* If this is the first .plt entry, make room
6008 for the special first entry. */
6009 if (s->size == 0)
6010 s->size += htab->plt_initial_entry_size;
6011
6012 /* The PowerPC PLT is actually composed of two
6013 parts, the first part is 2 words (for a load
6014 and a jump), and then there is a remaining
6015 word available at the end. */
6016 plt_offset = (htab->plt_initial_entry_size
6017 + (htab->plt_slot_size
6018 * ((s->size
6019 - htab->plt_initial_entry_size)
6020 / htab->plt_entry_size)));
6021
6022 /* If this symbol is not defined in a regular
6023 file, and we are not generating a shared
6024 library, then set the symbol to this location
6025 in the .plt. This is to avoid text
6026 relocations, and is required to make
6027 function pointers compare as equal between
6028 the normal executable and the shared library. */
6029 if (! bfd_link_pic (info)
6030 && h->def_dynamic
6031 && !h->def_regular)
6032 {
6033 h->root.u.def.section = s;
6034 h->root.u.def.value = plt_offset;
6035 }
6036
6037 /* Make room for this entry. */
6038 s->size += htab->plt_entry_size;
6039 /* After the 8192nd entry, room for two entries
6040 is allocated. */
6041 if (htab->plt_type == PLT_OLD
6042 && (s->size - htab->plt_initial_entry_size)
6043 / htab->plt_entry_size
6044 > PLT_NUM_SINGLE_ENTRIES)
6045 s->size += htab->plt_entry_size;
6046 }
6047 ent->plt.offset = plt_offset;
6048 }
6049
6050 /* We also need to make an entry in the .rela.plt section. */
6051 if (!doneone)
6052 {
6053 if (!htab->elf.dynamic_sections_created
6054 || h->dynindx == -1)
6055 htab->elf.irelplt->size += sizeof (Elf32_External_Rela);
6056 else
6057 {
6058 htab->elf.srelplt->size += sizeof (Elf32_External_Rela);
6059
6060 if (htab->plt_type == PLT_VXWORKS)
6061 {
6062 /* Allocate space for the unloaded relocations. */
6063 if (!bfd_link_pic (info)
6064 && htab->elf.dynamic_sections_created)
6065 {
6066 if (ent->plt.offset
6067 == (bfd_vma) htab->plt_initial_entry_size)
6068 {
6069 htab->srelplt2->size
6070 += (sizeof (Elf32_External_Rela)
6071 * VXWORKS_PLTRESOLVE_RELOCS);
6072 }
6073
6074 htab->srelplt2->size
6075 += (sizeof (Elf32_External_Rela)
6076 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS);
6077 }
6078
6079 /* Every PLT entry has an associated GOT entry in
6080 .got.plt. */
6081 htab->elf.sgotplt->size += 4;
6082 }
6083 }
6084 doneone = TRUE;
6085 }
6086 }
6087 else
6088 ent->plt.offset = (bfd_vma) -1;
6089 }
6090 else
6091 ent->plt.offset = (bfd_vma) -1;
6092
6093 if (!doneone)
6094 {
6095 h->plt.plist = NULL;
6096 h->needs_plt = 0;
6097 }
6098 }
6099 else
6100 {
6101 h->plt.plist = NULL;
6102 h->needs_plt = 0;
6103 }
6104
6105 eh = (struct ppc_elf_link_hash_entry *) h;
6106 if (eh->elf.got.refcount > 0
6107 || (ELIMINATE_COPY_RELOCS
6108 && !eh->elf.def_regular
6109 && eh->elf.protected_def
6110 && eh->has_addr16_ha
6111 && eh->has_addr16_lo
6112 && htab->params->pic_fixup > 0))
6113 {
6114 bfd_boolean dyn;
6115 unsigned int need;
6116
6117 /* Make sure this symbol is output as a dynamic symbol. */
6118 if (eh->elf.dynindx == -1
6119 && !eh->elf.forced_local
6120 && eh->elf.type != STT_GNU_IFUNC
6121 && htab->elf.dynamic_sections_created)
6122 {
6123 if (!bfd_elf_link_record_dynamic_symbol (info, &eh->elf))
6124 return FALSE;
6125 }
6126
6127 need = 0;
6128 if ((eh->tls_mask & TLS_TLS) != 0)
6129 {
6130 if ((eh->tls_mask & TLS_LD) != 0)
6131 {
6132 if (!eh->elf.def_dynamic)
6133 /* We'll just use htab->tlsld_got.offset. This should
6134 always be the case. It's a little odd if we have
6135 a local dynamic reloc against a non-local symbol. */
6136 htab->tlsld_got.refcount += 1;
6137 else
6138 need += 8;
6139 }
6140 if ((eh->tls_mask & TLS_GD) != 0)
6141 need += 8;
6142 if ((eh->tls_mask & (TLS_TPREL | TLS_TPRELGD)) != 0)
6143 need += 4;
6144 if ((eh->tls_mask & TLS_DTPREL) != 0)
6145 need += 4;
6146 }
6147 else
6148 need += 4;
6149 if (need == 0)
6150 eh->elf.got.offset = (bfd_vma) -1;
6151 else
6152 {
6153 eh->elf.got.offset = allocate_got (htab, need);
6154 dyn = htab->elf.dynamic_sections_created;
6155 if ((bfd_link_pic (info)
6156 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, &eh->elf))
6157 && (ELF_ST_VISIBILITY (eh->elf.other) == STV_DEFAULT
6158 || eh->elf.root.type != bfd_link_hash_undefweak))
6159 {
6160 asection *rsec = htab->elf.srelgot;
6161
6162 if (eh->elf.type == STT_GNU_IFUNC)
6163 rsec = htab->elf.irelplt;
6164 /* All the entries we allocated need relocs.
6165 Except LD only needs one. */
6166 if ((eh->tls_mask & TLS_LD) != 0
6167 && eh->elf.def_dynamic)
6168 need -= 4;
6169 rsec->size += need * (sizeof (Elf32_External_Rela) / 4);
6170 }
6171 }
6172 }
6173 else
6174 eh->elf.got.offset = (bfd_vma) -1;
6175
6176 if (eh->dyn_relocs == NULL
6177 || !htab->elf.dynamic_sections_created)
6178 return TRUE;
6179
6180 /* In the shared -Bsymbolic case, discard space allocated for
6181 dynamic pc-relative relocs against symbols which turn out to be
6182 defined in regular objects. For the normal shared case, discard
6183 space for relocs that have become local due to symbol visibility
6184 changes. */
6185
6186 if (bfd_link_pic (info))
6187 {
6188 /* Relocs that use pc_count are those that appear on a call insn,
6189 or certain REL relocs (see must_be_dyn_reloc) that can be
6190 generated via assembly. We want calls to protected symbols to
6191 resolve directly to the function rather than going via the plt.
6192 If people want function pointer comparisons to work as expected
6193 then they should avoid writing weird assembly. */
6194 if (SYMBOL_CALLS_LOCAL (info, h))
6195 {
6196 struct elf_dyn_relocs **pp;
6197
6198 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
6199 {
6200 p->count -= p->pc_count;
6201 p->pc_count = 0;
6202 if (p->count == 0)
6203 *pp = p->next;
6204 else
6205 pp = &p->next;
6206 }
6207 }
6208
6209 if (htab->is_vxworks)
6210 {
6211 struct elf_dyn_relocs **pp;
6212
6213 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
6214 {
6215 if (strcmp (p->sec->output_section->name, ".tls_vars") == 0)
6216 *pp = p->next;
6217 else
6218 pp = &p->next;
6219 }
6220 }
6221
6222 /* Discard relocs on undefined symbols that must be local. */
6223 if (eh->dyn_relocs != NULL
6224 && h->root.type == bfd_link_hash_undefined
6225 && (ELF_ST_VISIBILITY (h->other) == STV_HIDDEN
6226 || ELF_ST_VISIBILITY (h->other) == STV_INTERNAL))
6227 eh->dyn_relocs = NULL;
6228
6229 /* Also discard relocs on undefined weak syms with non-default
6230 visibility. */
6231 if (eh->dyn_relocs != NULL
6232 && h->root.type == bfd_link_hash_undefweak)
6233 {
6234 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
6235 eh->dyn_relocs = NULL;
6236
6237 /* Make sure undefined weak symbols are output as a dynamic
6238 symbol in PIEs. */
6239 else if (h->dynindx == -1
6240 && !h->forced_local
6241 && !h->def_regular)
6242 {
6243 if (! bfd_elf_link_record_dynamic_symbol (info, h))
6244 return FALSE;
6245 }
6246 }
6247 }
6248 else if (ELIMINATE_COPY_RELOCS)
6249 {
6250 /* For the non-shared case, discard space for relocs against
6251 symbols which turn out to need copy relocs or are not
6252 dynamic. */
6253
6254 if (!h->non_got_ref
6255 && !h->def_regular
6256 && !(h->protected_def
6257 && eh->has_addr16_ha
6258 && eh->has_addr16_lo
6259 && htab->params->pic_fixup > 0))
6260 {
6261 /* Make sure this symbol is output as a dynamic symbol.
6262 Undefined weak syms won't yet be marked as dynamic. */
6263 if (h->dynindx == -1
6264 && !h->forced_local)
6265 {
6266 if (! bfd_elf_link_record_dynamic_symbol (info, h))
6267 return FALSE;
6268 }
6269
6270 /* If that succeeded, we know we'll be keeping all the
6271 relocs. */
6272 if (h->dynindx != -1)
6273 goto keep;
6274 }
6275
6276 eh->dyn_relocs = NULL;
6277
6278 keep: ;
6279 }
6280
6281 /* Finally, allocate space. */
6282 for (p = eh->dyn_relocs; p != NULL; p = p->next)
6283 {
6284 asection *sreloc = elf_section_data (p->sec)->sreloc;
6285 if (eh->elf.type == STT_GNU_IFUNC)
6286 sreloc = htab->elf.irelplt;
6287 sreloc->size += p->count * sizeof (Elf32_External_Rela);
6288 }
6289
6290 return TRUE;
6291 }
6292
6293 /* Set DF_TEXTREL if we find any dynamic relocs that apply to
6294 read-only sections. */
6295
6296 static bfd_boolean
6297 maybe_set_textrel (struct elf_link_hash_entry *h, void *info)
6298 {
6299 if (h->root.type == bfd_link_hash_indirect)
6300 return TRUE;
6301
6302 if (readonly_dynrelocs (h))
6303 {
6304 ((struct bfd_link_info *) info)->flags |= DF_TEXTREL;
6305
6306 /* Not an error, just cut short the traversal. */
6307 return FALSE;
6308 }
6309 return TRUE;
6310 }
6311
6312 static const unsigned char glink_eh_frame_cie[] =
6313 {
6314 0, 0, 0, 16, /* length. */
6315 0, 0, 0, 0, /* id. */
6316 1, /* CIE version. */
6317 'z', 'R', 0, /* Augmentation string. */
6318 4, /* Code alignment. */
6319 0x7c, /* Data alignment. */
6320 65, /* RA reg. */
6321 1, /* Augmentation size. */
6322 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding. */
6323 DW_CFA_def_cfa, 1, 0 /* def_cfa: r1 offset 0. */
6324 };
6325
6326 /* Set the sizes of the dynamic sections. */
6327
6328 static bfd_boolean
6329 ppc_elf_size_dynamic_sections (bfd *output_bfd,
6330 struct bfd_link_info *info)
6331 {
6332 struct ppc_elf_link_hash_table *htab;
6333 asection *s;
6334 bfd_boolean relocs;
6335 bfd *ibfd;
6336
6337 #ifdef DEBUG
6338 fprintf (stderr, "ppc_elf_size_dynamic_sections called\n");
6339 #endif
6340
6341 htab = ppc_elf_hash_table (info);
6342 BFD_ASSERT (htab->elf.dynobj != NULL);
6343
6344 if (elf_hash_table (info)->dynamic_sections_created)
6345 {
6346 /* Set the contents of the .interp section to the interpreter. */
6347 if (bfd_link_executable (info) && !info->nointerp)
6348 {
6349 s = bfd_get_linker_section (htab->elf.dynobj, ".interp");
6350 BFD_ASSERT (s != NULL);
6351 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
6352 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
6353 }
6354 }
6355
6356 if (htab->plt_type == PLT_OLD)
6357 htab->got_header_size = 16;
6358 else if (htab->plt_type == PLT_NEW)
6359 htab->got_header_size = 12;
6360
6361 /* Set up .got offsets for local syms, and space for local dynamic
6362 relocs. */
6363 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
6364 {
6365 bfd_signed_vma *local_got;
6366 bfd_signed_vma *end_local_got;
6367 struct plt_entry **local_plt;
6368 struct plt_entry **end_local_plt;
6369 char *lgot_masks;
6370 bfd_size_type locsymcount;
6371 Elf_Internal_Shdr *symtab_hdr;
6372
6373 if (!is_ppc_elf (ibfd))
6374 continue;
6375
6376 for (s = ibfd->sections; s != NULL; s = s->next)
6377 {
6378 struct ppc_dyn_relocs *p;
6379
6380 for (p = ((struct ppc_dyn_relocs *)
6381 elf_section_data (s)->local_dynrel);
6382 p != NULL;
6383 p = p->next)
6384 {
6385 if (!bfd_is_abs_section (p->sec)
6386 && bfd_is_abs_section (p->sec->output_section))
6387 {
6388 /* Input section has been discarded, either because
6389 it is a copy of a linkonce section or due to
6390 linker script /DISCARD/, so we'll be discarding
6391 the relocs too. */
6392 }
6393 else if (htab->is_vxworks
6394 && strcmp (p->sec->output_section->name,
6395 ".tls_vars") == 0)
6396 {
6397 /* Relocations in vxworks .tls_vars sections are
6398 handled specially by the loader. */
6399 }
6400 else if (p->count != 0)
6401 {
6402 asection *sreloc = elf_section_data (p->sec)->sreloc;
6403 if (p->ifunc)
6404 sreloc = htab->elf.irelplt;
6405 sreloc->size += p->count * sizeof (Elf32_External_Rela);
6406 if ((p->sec->output_section->flags
6407 & (SEC_READONLY | SEC_ALLOC))
6408 == (SEC_READONLY | SEC_ALLOC))
6409 info->flags |= DF_TEXTREL;
6410 }
6411 }
6412 }
6413
6414 local_got = elf_local_got_refcounts (ibfd);
6415 if (!local_got)
6416 continue;
6417
6418 symtab_hdr = &elf_symtab_hdr (ibfd);
6419 locsymcount = symtab_hdr->sh_info;
6420 end_local_got = local_got + locsymcount;
6421 local_plt = (struct plt_entry **) end_local_got;
6422 end_local_plt = local_plt + locsymcount;
6423 lgot_masks = (char *) end_local_plt;
6424
6425 for (; local_got < end_local_got; ++local_got, ++lgot_masks)
6426 if (*local_got > 0)
6427 {
6428 unsigned int need = 0;
6429 if ((*lgot_masks & TLS_TLS) != 0)
6430 {
6431 if ((*lgot_masks & TLS_GD) != 0)
6432 need += 8;
6433 if ((*lgot_masks & TLS_LD) != 0)
6434 htab->tlsld_got.refcount += 1;
6435 if ((*lgot_masks & (TLS_TPREL | TLS_TPRELGD)) != 0)
6436 need += 4;
6437 if ((*lgot_masks & TLS_DTPREL) != 0)
6438 need += 4;
6439 }
6440 else
6441 need += 4;
6442 if (need == 0)
6443 *local_got = (bfd_vma) -1;
6444 else
6445 {
6446 *local_got = allocate_got (htab, need);
6447 if (bfd_link_pic (info))
6448 {
6449 asection *srel = htab->elf.srelgot;
6450 if ((*lgot_masks & PLT_IFUNC) != 0)
6451 srel = htab->elf.irelplt;
6452 srel->size += need * (sizeof (Elf32_External_Rela) / 4);
6453 }
6454 }
6455 }
6456 else
6457 *local_got = (bfd_vma) -1;
6458
6459 if (htab->is_vxworks)
6460 continue;
6461
6462 /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */
6463 for (; local_plt < end_local_plt; ++local_plt)
6464 {
6465 struct plt_entry *ent;
6466 bfd_boolean doneone = FALSE;
6467 bfd_vma plt_offset = 0, glink_offset = 0;
6468
6469 for (ent = *local_plt; ent != NULL; ent = ent->next)
6470 if (ent->plt.refcount > 0)
6471 {
6472 s = htab->elf.iplt;
6473
6474 if (!doneone)
6475 {
6476 plt_offset = s->size;
6477 s->size += 4;
6478 }
6479 ent->plt.offset = plt_offset;
6480
6481 s = htab->glink;
6482 if (!doneone || bfd_link_pic (info))
6483 {
6484 glink_offset = s->size;
6485 s->size += GLINK_ENTRY_SIZE;
6486 }
6487 ent->glink_offset = glink_offset;
6488
6489 if (!doneone)
6490 {
6491 htab->elf.irelplt->size += sizeof (Elf32_External_Rela);
6492 doneone = TRUE;
6493 }
6494 }
6495 else
6496 ent->plt.offset = (bfd_vma) -1;
6497 }
6498 }
6499
6500 /* Allocate space for global sym dynamic relocs. */
6501 elf_link_hash_traverse (elf_hash_table (info), allocate_dynrelocs, info);
6502
6503 if (htab->tlsld_got.refcount > 0)
6504 {
6505 htab->tlsld_got.offset = allocate_got (htab, 8);
6506 if (bfd_link_pic (info))
6507 htab->elf.srelgot->size += sizeof (Elf32_External_Rela);
6508 }
6509 else
6510 htab->tlsld_got.offset = (bfd_vma) -1;
6511
6512 if (htab->elf.sgot != NULL && htab->plt_type != PLT_VXWORKS)
6513 {
6514 unsigned int g_o_t = 32768;
6515
6516 /* If we haven't allocated the header, do so now. When we get here,
6517 for old plt/got the got size will be 0 to 32764 (not allocated),
6518 or 32780 to 65536 (header allocated). For new plt/got, the
6519 corresponding ranges are 0 to 32768 and 32780 to 65536. */
6520 if (htab->elf.sgot->size <= 32768)
6521 {
6522 g_o_t = htab->elf.sgot->size;
6523 if (htab->plt_type == PLT_OLD)
6524 g_o_t += 4;
6525 htab->elf.sgot->size += htab->got_header_size;
6526 }
6527
6528 htab->elf.hgot->root.u.def.value = g_o_t;
6529 }
6530 if (bfd_link_pic (info))
6531 {
6532 struct elf_link_hash_entry *sda = htab->sdata[0].sym;
6533
6534 sda->root.u.def.section = htab->elf.hgot->root.u.def.section;
6535 sda->root.u.def.value = htab->elf.hgot->root.u.def.value;
6536 }
6537 if (info->emitrelocations)
6538 {
6539 struct elf_link_hash_entry *sda = htab->sdata[0].sym;
6540
6541 if (sda != NULL && sda->ref_regular)
6542 sda->root.u.def.section->flags |= SEC_KEEP;
6543 sda = htab->sdata[1].sym;
6544 if (sda != NULL && sda->ref_regular)
6545 sda->root.u.def.section->flags |= SEC_KEEP;
6546 }
6547
6548 if (htab->glink != NULL
6549 && htab->glink->size != 0
6550 && htab->elf.dynamic_sections_created)
6551 {
6552 htab->glink_pltresolve = htab->glink->size;
6553 /* Space for the branch table. ??? We don't need entries for
6554 non-dynamic symbols in this table. This case can arise with
6555 static ifuncs or forced local ifuncs. */
6556 htab->glink->size += htab->glink->size / (GLINK_ENTRY_SIZE / 4) - 4;
6557 /* Pad out to align the start of PLTresolve. */
6558 htab->glink->size += -htab->glink->size & (htab->params->ppc476_workaround
6559 ? 63 : 15);
6560 htab->glink->size += GLINK_PLTRESOLVE;
6561
6562 if (htab->params->emit_stub_syms)
6563 {
6564 struct elf_link_hash_entry *sh;
6565 sh = elf_link_hash_lookup (&htab->elf, "__glink",
6566 TRUE, FALSE, FALSE);
6567 if (sh == NULL)
6568 return FALSE;
6569 if (sh->root.type == bfd_link_hash_new)
6570 {
6571 sh->root.type = bfd_link_hash_defined;
6572 sh->root.u.def.section = htab->glink;
6573 sh->root.u.def.value = htab->glink_pltresolve;
6574 sh->ref_regular = 1;
6575 sh->def_regular = 1;
6576 sh->ref_regular_nonweak = 1;
6577 sh->forced_local = 1;
6578 sh->non_elf = 0;
6579 sh->root.linker_def = 1;
6580 }
6581 sh = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve",
6582 TRUE, FALSE, FALSE);
6583 if (sh == NULL)
6584 return FALSE;
6585 if (sh->root.type == bfd_link_hash_new)
6586 {
6587 sh->root.type = bfd_link_hash_defined;
6588 sh->root.u.def.section = htab->glink;
6589 sh->root.u.def.value = htab->glink->size - GLINK_PLTRESOLVE;
6590 sh->ref_regular = 1;
6591 sh->def_regular = 1;
6592 sh->ref_regular_nonweak = 1;
6593 sh->forced_local = 1;
6594 sh->non_elf = 0;
6595 sh->root.linker_def = 1;
6596 }
6597 }
6598 }
6599
6600 if (htab->glink != NULL
6601 && htab->glink->size != 0
6602 && htab->glink_eh_frame != NULL
6603 && !bfd_is_abs_section (htab->glink_eh_frame->output_section)
6604 && _bfd_elf_eh_frame_present (info))
6605 {
6606 s = htab->glink_eh_frame;
6607 s->size = sizeof (glink_eh_frame_cie) + 20;
6608 if (bfd_link_pic (info))
6609 {
6610 s->size += 4;
6611 if (htab->glink->size - GLINK_PLTRESOLVE + 8 >= 256)
6612 s->size += 4;
6613 }
6614 }
6615
6616 /* We've now determined the sizes of the various dynamic sections.
6617 Allocate memory for them. */
6618 relocs = FALSE;
6619 for (s = htab->elf.dynobj->sections; s != NULL; s = s->next)
6620 {
6621 bfd_boolean strip_section = TRUE;
6622
6623 if ((s->flags & SEC_LINKER_CREATED) == 0)
6624 continue;
6625
6626 if (s == htab->elf.splt
6627 || s == htab->elf.sgot)
6628 {
6629 /* We'd like to strip these sections if they aren't needed, but if
6630 we've exported dynamic symbols from them we must leave them.
6631 It's too late to tell BFD to get rid of the symbols. */
6632 if (htab->elf.hplt != NULL)
6633 strip_section = FALSE;
6634 /* Strip this section if we don't need it; see the
6635 comment below. */
6636 }
6637 else if (s == htab->elf.iplt
6638 || s == htab->glink
6639 || s == htab->glink_eh_frame
6640 || s == htab->elf.sgotplt
6641 || s == htab->sbss
6642 || s == htab->elf.sdynbss
6643 || s == htab->elf.sdynrelro
6644 || s == htab->dynsbss)
6645 {
6646 /* Strip these too. */
6647 }
6648 else if (s == htab->sdata[0].section
6649 || s == htab->sdata[1].section)
6650 {
6651 strip_section = (s->flags & SEC_KEEP) == 0;
6652 }
6653 else if (CONST_STRNEQ (bfd_get_section_name (htab->elf.dynobj, s),
6654 ".rela"))
6655 {
6656 if (s->size != 0)
6657 {
6658 /* Remember whether there are any relocation sections. */
6659 relocs = TRUE;
6660
6661 /* We use the reloc_count field as a counter if we need
6662 to copy relocs into the output file. */
6663 s->reloc_count = 0;
6664 }
6665 }
6666 else
6667 {
6668 /* It's not one of our sections, so don't allocate space. */
6669 continue;
6670 }
6671
6672 if (s->size == 0 && strip_section)
6673 {
6674 /* If we don't need this section, strip it from the
6675 output file. This is mostly to handle .rela.bss and
6676 .rela.plt. We must create both sections in
6677 create_dynamic_sections, because they must be created
6678 before the linker maps input sections to output
6679 sections. The linker does that before
6680 adjust_dynamic_symbol is called, and it is that
6681 function which decides whether anything needs to go
6682 into these sections. */
6683 s->flags |= SEC_EXCLUDE;
6684 continue;
6685 }
6686
6687 if ((s->flags & SEC_HAS_CONTENTS) == 0)
6688 continue;
6689
6690 /* Allocate memory for the section contents. */
6691 s->contents = bfd_zalloc (htab->elf.dynobj, s->size);
6692 if (s->contents == NULL)
6693 return FALSE;
6694 }
6695
6696 if (htab->elf.dynamic_sections_created)
6697 {
6698 /* Add some entries to the .dynamic section. We fill in the
6699 values later, in ppc_elf_finish_dynamic_sections, but we
6700 must add the entries now so that we get the correct size for
6701 the .dynamic section. The DT_DEBUG entry is filled in by the
6702 dynamic linker and used by the debugger. */
6703 #define add_dynamic_entry(TAG, VAL) \
6704 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
6705
6706 if (bfd_link_executable (info))
6707 {
6708 if (!add_dynamic_entry (DT_DEBUG, 0))
6709 return FALSE;
6710 }
6711
6712 if (htab->elf.splt != NULL && htab->elf.splt->size != 0)
6713 {
6714 if (!add_dynamic_entry (DT_PLTGOT, 0)
6715 || !add_dynamic_entry (DT_PLTRELSZ, 0)
6716 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
6717 || !add_dynamic_entry (DT_JMPREL, 0))
6718 return FALSE;
6719 }
6720
6721 if (htab->plt_type == PLT_NEW
6722 && htab->glink != NULL
6723 && htab->glink->size != 0)
6724 {
6725 if (!add_dynamic_entry (DT_PPC_GOT, 0))
6726 return FALSE;
6727 if (!htab->params->no_tls_get_addr_opt
6728 && htab->tls_get_addr != NULL
6729 && htab->tls_get_addr->plt.plist != NULL
6730 && !add_dynamic_entry (DT_PPC_OPT, PPC_OPT_TLS))
6731 return FALSE;
6732 }
6733
6734 if (relocs)
6735 {
6736 if (!add_dynamic_entry (DT_RELA, 0)
6737 || !add_dynamic_entry (DT_RELASZ, 0)
6738 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
6739 return FALSE;
6740 }
6741
6742 /* If any dynamic relocs apply to a read-only section, then we
6743 need a DT_TEXTREL entry. */
6744 if ((info->flags & DF_TEXTREL) == 0)
6745 elf_link_hash_traverse (elf_hash_table (info), maybe_set_textrel,
6746 info);
6747
6748 if ((info->flags & DF_TEXTREL) != 0)
6749 {
6750 if (!add_dynamic_entry (DT_TEXTREL, 0))
6751 return FALSE;
6752 }
6753 if (htab->is_vxworks
6754 && !elf_vxworks_add_dynamic_entries (output_bfd, info))
6755 return FALSE;
6756 }
6757 #undef add_dynamic_entry
6758
6759 if (htab->glink_eh_frame != NULL
6760 && htab->glink_eh_frame->contents != NULL)
6761 {
6762 unsigned char *p = htab->glink_eh_frame->contents;
6763 bfd_vma val;
6764
6765 memcpy (p, glink_eh_frame_cie, sizeof (glink_eh_frame_cie));
6766 /* CIE length (rewrite in case little-endian). */
6767 bfd_put_32 (htab->elf.dynobj, sizeof (glink_eh_frame_cie) - 4, p);
6768 p += sizeof (glink_eh_frame_cie);
6769 /* FDE length. */
6770 val = htab->glink_eh_frame->size - 4 - sizeof (glink_eh_frame_cie);
6771 bfd_put_32 (htab->elf.dynobj, val, p);
6772 p += 4;
6773 /* CIE pointer. */
6774 val = p - htab->glink_eh_frame->contents;
6775 bfd_put_32 (htab->elf.dynobj, val, p);
6776 p += 4;
6777 /* Offset to .glink. Set later. */
6778 p += 4;
6779 /* .glink size. */
6780 bfd_put_32 (htab->elf.dynobj, htab->glink->size, p);
6781 p += 4;
6782 /* Augmentation. */
6783 p += 1;
6784
6785 if (bfd_link_pic (info)
6786 && htab->elf.dynamic_sections_created)
6787 {
6788 bfd_vma adv = (htab->glink->size - GLINK_PLTRESOLVE + 8) >> 2;
6789 if (adv < 64)
6790 *p++ = DW_CFA_advance_loc + adv;
6791 else if (adv < 256)
6792 {
6793 *p++ = DW_CFA_advance_loc1;
6794 *p++ = adv;
6795 }
6796 else if (adv < 65536)
6797 {
6798 *p++ = DW_CFA_advance_loc2;
6799 bfd_put_16 (htab->elf.dynobj, adv, p);
6800 p += 2;
6801 }
6802 else
6803 {
6804 *p++ = DW_CFA_advance_loc4;
6805 bfd_put_32 (htab->elf.dynobj, adv, p);
6806 p += 4;
6807 }
6808 *p++ = DW_CFA_register;
6809 *p++ = 65;
6810 p++;
6811 *p++ = DW_CFA_advance_loc + 4;
6812 *p++ = DW_CFA_restore_extended;
6813 *p++ = 65;
6814 }
6815 BFD_ASSERT ((bfd_vma) ((p + 3 - htab->glink_eh_frame->contents) & -4)
6816 == htab->glink_eh_frame->size);
6817 }
6818
6819 return TRUE;
6820 }
6821
6822 /* Arrange to have _SDA_BASE_ or _SDA2_BASE_ stripped from the output
6823 if it looks like nothing is using them. */
6824
6825 static void
6826 maybe_strip_sdasym (bfd *output_bfd, elf_linker_section_t *lsect)
6827 {
6828 struct elf_link_hash_entry *sda = lsect->sym;
6829
6830 if (sda != NULL && !sda->ref_regular && sda->dynindx == -1)
6831 {
6832 asection *s;
6833
6834 s = bfd_get_section_by_name (output_bfd, lsect->name);
6835 if (s == NULL || bfd_section_removed_from_list (output_bfd, s))
6836 {
6837 s = bfd_get_section_by_name (output_bfd, lsect->bss_name);
6838 if (s == NULL || bfd_section_removed_from_list (output_bfd, s))
6839 {
6840 sda->def_regular = 0;
6841 /* This is somewhat magic. See elf_link_output_extsym. */
6842 sda->ref_dynamic = 1;
6843 sda->forced_local = 0;
6844 }
6845 }
6846 }
6847 }
6848
6849 void
6850 ppc_elf_maybe_strip_sdata_syms (struct bfd_link_info *info)
6851 {
6852 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
6853
6854 if (htab != NULL)
6855 {
6856 maybe_strip_sdasym (info->output_bfd, &htab->sdata[0]);
6857 maybe_strip_sdasym (info->output_bfd, &htab->sdata[1]);
6858 }
6859 }
6860
6861
6862 /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
6863
6864 static bfd_boolean
6865 ppc_elf_hash_symbol (struct elf_link_hash_entry *h)
6866 {
6867 if (h->plt.plist != NULL
6868 && !h->def_regular
6869 && (!h->pointer_equality_needed
6870 || !h->ref_regular_nonweak))
6871 return FALSE;
6872
6873 return _bfd_elf_hash_symbol (h);
6874 }
6875 \f
6876 #define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0]))
6877
6878 /* Relaxation trampolines. r12 is available for clobbering (r11, is
6879 used for some functions that are allowed to break the ABI). */
6880 static const int shared_stub_entry[] =
6881 {
6882 0x7c0802a6, /* mflr 0 */
6883 0x429f0005, /* bcl 20, 31, .Lxxx */
6884 0x7d8802a6, /* mflr 12 */
6885 0x3d8c0000, /* addis 12, 12, (xxx-.Lxxx)@ha */
6886 0x398c0000, /* addi 12, 12, (xxx-.Lxxx)@l */
6887 0x7c0803a6, /* mtlr 0 */
6888 0x7d8903a6, /* mtctr 12 */
6889 0x4e800420, /* bctr */
6890 };
6891
6892 static const int stub_entry[] =
6893 {
6894 0x3d800000, /* lis 12,xxx@ha */
6895 0x398c0000, /* addi 12,12,xxx@l */
6896 0x7d8903a6, /* mtctr 12 */
6897 0x4e800420, /* bctr */
6898 };
6899
6900 struct ppc_elf_relax_info
6901 {
6902 unsigned int workaround_size;
6903 unsigned int picfixup_size;
6904 };
6905
6906 /* This function implements long branch trampolines, and the ppc476
6907 icache bug workaround. Any section needing trampolines or patch
6908 space for the workaround has its size extended so that we can
6909 add trampolines at the end of the section. */
6910
6911 static bfd_boolean
6912 ppc_elf_relax_section (bfd *abfd,
6913 asection *isec,
6914 struct bfd_link_info *link_info,
6915 bfd_boolean *again)
6916 {
6917 struct one_branch_fixup
6918 {
6919 struct one_branch_fixup *next;
6920 asection *tsec;
6921 /* Final link, can use the symbol offset. For a
6922 relocatable link we use the symbol's index. */
6923 bfd_vma toff;
6924 bfd_vma trampoff;
6925 };
6926
6927 Elf_Internal_Shdr *symtab_hdr;
6928 bfd_byte *contents = NULL;
6929 Elf_Internal_Sym *isymbuf = NULL;
6930 Elf_Internal_Rela *internal_relocs = NULL;
6931 Elf_Internal_Rela *irel, *irelend = NULL;
6932 struct one_branch_fixup *branch_fixups = NULL;
6933 struct ppc_elf_relax_info *relax_info = NULL;
6934 unsigned changes = 0;
6935 bfd_boolean workaround_change;
6936 struct ppc_elf_link_hash_table *htab;
6937 bfd_size_type trampbase, trampoff, newsize, picfixup_size;
6938 asection *got2;
6939 bfd_boolean maybe_pasted;
6940
6941 *again = FALSE;
6942
6943 /* No need to do anything with non-alloc or non-code sections. */
6944 if ((isec->flags & SEC_ALLOC) == 0
6945 || (isec->flags & SEC_CODE) == 0
6946 || (isec->flags & SEC_LINKER_CREATED) != 0
6947 || isec->size < 4)
6948 return TRUE;
6949
6950 /* We cannot represent the required PIC relocs in the output, so don't
6951 do anything. The linker doesn't support mixing -shared and -r
6952 anyway. */
6953 if (bfd_link_relocatable (link_info) && bfd_link_pic (link_info))
6954 return TRUE;
6955
6956 htab = ppc_elf_hash_table (link_info);
6957 if (htab == NULL)
6958 return TRUE;
6959
6960 isec->size = (isec->size + 3) & -4;
6961 if (isec->rawsize == 0)
6962 isec->rawsize = isec->size;
6963 trampbase = isec->size;
6964
6965 BFD_ASSERT (isec->sec_info_type == SEC_INFO_TYPE_NONE
6966 || isec->sec_info_type == SEC_INFO_TYPE_TARGET);
6967 isec->sec_info_type = SEC_INFO_TYPE_TARGET;
6968
6969 if (htab->params->ppc476_workaround
6970 || htab->params->pic_fixup > 0)
6971 {
6972 if (elf_section_data (isec)->sec_info == NULL)
6973 {
6974 elf_section_data (isec)->sec_info
6975 = bfd_zalloc (abfd, sizeof (struct ppc_elf_relax_info));
6976 if (elf_section_data (isec)->sec_info == NULL)
6977 return FALSE;
6978 }
6979 relax_info = elf_section_data (isec)->sec_info;
6980 trampbase -= relax_info->workaround_size;
6981 }
6982
6983 maybe_pasted = (strcmp (isec->output_section->name, ".init") == 0
6984 || strcmp (isec->output_section->name, ".fini") == 0);
6985 /* Space for a branch around any trampolines. */
6986 trampoff = trampbase;
6987 if (maybe_pasted && trampbase == isec->rawsize)
6988 trampoff += 4;
6989
6990 symtab_hdr = &elf_symtab_hdr (abfd);
6991 picfixup_size = 0;
6992 if (htab->params->branch_trampolines
6993 || htab->params->pic_fixup > 0)
6994 {
6995 /* Get a copy of the native relocations. */
6996 if (isec->reloc_count != 0)
6997 {
6998 internal_relocs = _bfd_elf_link_read_relocs (abfd, isec, NULL, NULL,
6999 link_info->keep_memory);
7000 if (internal_relocs == NULL)
7001 goto error_return;
7002 }
7003
7004 got2 = bfd_get_section_by_name (abfd, ".got2");
7005
7006 irelend = internal_relocs + isec->reloc_count;
7007 for (irel = internal_relocs; irel < irelend; irel++)
7008 {
7009 unsigned long r_type = ELF32_R_TYPE (irel->r_info);
7010 bfd_vma toff, roff;
7011 asection *tsec;
7012 struct one_branch_fixup *f;
7013 size_t insn_offset = 0;
7014 bfd_vma max_branch_offset = 0, val;
7015 bfd_byte *hit_addr;
7016 unsigned long t0;
7017 struct elf_link_hash_entry *h;
7018 struct plt_entry **plist;
7019 unsigned char sym_type;
7020
7021 switch (r_type)
7022 {
7023 case R_PPC_REL24:
7024 case R_PPC_LOCAL24PC:
7025 case R_PPC_PLTREL24:
7026 max_branch_offset = 1 << 25;
7027 break;
7028
7029 case R_PPC_REL14:
7030 case R_PPC_REL14_BRTAKEN:
7031 case R_PPC_REL14_BRNTAKEN:
7032 max_branch_offset = 1 << 15;
7033 break;
7034
7035 case R_PPC_ADDR16_HA:
7036 if (htab->params->pic_fixup > 0)
7037 break;
7038 continue;
7039
7040 default:
7041 continue;
7042 }
7043
7044 /* Get the value of the symbol referred to by the reloc. */
7045 h = NULL;
7046 if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
7047 {
7048 /* A local symbol. */
7049 Elf_Internal_Sym *isym;
7050
7051 /* Read this BFD's local symbols. */
7052 if (isymbuf == NULL)
7053 {
7054 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
7055 if (isymbuf == NULL)
7056 isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
7057 symtab_hdr->sh_info, 0,
7058 NULL, NULL, NULL);
7059 if (isymbuf == 0)
7060 goto error_return;
7061 }
7062 isym = isymbuf + ELF32_R_SYM (irel->r_info);
7063 if (isym->st_shndx == SHN_UNDEF)
7064 tsec = bfd_und_section_ptr;
7065 else if (isym->st_shndx == SHN_ABS)
7066 tsec = bfd_abs_section_ptr;
7067 else if (isym->st_shndx == SHN_COMMON)
7068 tsec = bfd_com_section_ptr;
7069 else
7070 tsec = bfd_section_from_elf_index (abfd, isym->st_shndx);
7071
7072 toff = isym->st_value;
7073 sym_type = ELF_ST_TYPE (isym->st_info);
7074 }
7075 else
7076 {
7077 /* Global symbol handling. */
7078 unsigned long indx;
7079
7080 indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
7081 h = elf_sym_hashes (abfd)[indx];
7082
7083 while (h->root.type == bfd_link_hash_indirect
7084 || h->root.type == bfd_link_hash_warning)
7085 h = (struct elf_link_hash_entry *) h->root.u.i.link;
7086
7087 if (h->root.type == bfd_link_hash_defined
7088 || h->root.type == bfd_link_hash_defweak)
7089 {
7090 tsec = h->root.u.def.section;
7091 toff = h->root.u.def.value;
7092 }
7093 else if (h->root.type == bfd_link_hash_undefined
7094 || h->root.type == bfd_link_hash_undefweak)
7095 {
7096 tsec = bfd_und_section_ptr;
7097 toff = bfd_link_relocatable (link_info) ? indx : 0;
7098 }
7099 else
7100 continue;
7101
7102 /* If this branch is to __tls_get_addr then we may later
7103 optimise away the call. We won't be needing a long-
7104 branch stub in that case. */
7105 if (bfd_link_executable (link_info)
7106 && h == htab->tls_get_addr
7107 && irel != internal_relocs)
7108 {
7109 unsigned long t_symndx = ELF32_R_SYM (irel[-1].r_info);
7110 unsigned long t_rtype = ELF32_R_TYPE (irel[-1].r_info);
7111 unsigned int tls_mask = 0;
7112
7113 /* The previous reloc should be one of R_PPC_TLSGD or
7114 R_PPC_TLSLD, or for older object files, a reloc
7115 on the __tls_get_addr arg setup insn. Get tls
7116 mask bits from the symbol on that reloc. */
7117 if (t_symndx < symtab_hdr->sh_info)
7118 {
7119 bfd_vma *local_got_offsets = elf_local_got_offsets (abfd);
7120
7121 if (local_got_offsets != NULL)
7122 {
7123 struct plt_entry **local_plt = (struct plt_entry **)
7124 (local_got_offsets + symtab_hdr->sh_info);
7125 char *lgot_masks = (char *)
7126 (local_plt + symtab_hdr->sh_info);
7127 tls_mask = lgot_masks[t_symndx];
7128 }
7129 }
7130 else
7131 {
7132 struct elf_link_hash_entry *th
7133 = elf_sym_hashes (abfd)[t_symndx - symtab_hdr->sh_info];
7134
7135 while (th->root.type == bfd_link_hash_indirect
7136 || th->root.type == bfd_link_hash_warning)
7137 th = (struct elf_link_hash_entry *) th->root.u.i.link;
7138
7139 tls_mask
7140 = ((struct ppc_elf_link_hash_entry *) th)->tls_mask;
7141 }
7142
7143 /* The mask bits tell us if the call will be
7144 optimised away. */
7145 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0
7146 && (t_rtype == R_PPC_TLSGD
7147 || t_rtype == R_PPC_GOT_TLSGD16
7148 || t_rtype == R_PPC_GOT_TLSGD16_LO))
7149 continue;
7150 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0
7151 && (t_rtype == R_PPC_TLSLD
7152 || t_rtype == R_PPC_GOT_TLSLD16
7153 || t_rtype == R_PPC_GOT_TLSLD16_LO))
7154 continue;
7155 }
7156
7157 sym_type = h->type;
7158 }
7159
7160 if (r_type == R_PPC_ADDR16_HA)
7161 {
7162 if (h != NULL
7163 && !h->def_regular
7164 && h->protected_def
7165 && ppc_elf_hash_entry (h)->has_addr16_ha
7166 && ppc_elf_hash_entry (h)->has_addr16_lo)
7167 picfixup_size += 12;
7168 continue;
7169 }
7170
7171 /* The condition here under which we call find_plt_ent must
7172 match that in relocate_section. If we call find_plt_ent here
7173 but not in relocate_section, or vice versa, then the branch
7174 destination used here may be incorrect. */
7175 plist = NULL;
7176 if (h != NULL)
7177 {
7178 /* We know is_branch_reloc (r_type) is true. */
7179 if (h->type == STT_GNU_IFUNC
7180 || r_type == R_PPC_PLTREL24)
7181 plist = &h->plt.plist;
7182 }
7183 else if (sym_type == STT_GNU_IFUNC
7184 && elf_local_got_offsets (abfd) != NULL)
7185 {
7186 bfd_vma *local_got_offsets = elf_local_got_offsets (abfd);
7187 struct plt_entry **local_plt = (struct plt_entry **)
7188 (local_got_offsets + symtab_hdr->sh_info);
7189 plist = local_plt + ELF32_R_SYM (irel->r_info);
7190 }
7191 if (plist != NULL)
7192 {
7193 bfd_vma addend = 0;
7194 struct plt_entry *ent;
7195
7196 if (r_type == R_PPC_PLTREL24 && bfd_link_pic (link_info))
7197 addend = irel->r_addend;
7198 ent = find_plt_ent (plist, got2, addend);
7199 if (ent != NULL)
7200 {
7201 if (htab->plt_type == PLT_NEW
7202 || h == NULL
7203 || !htab->elf.dynamic_sections_created
7204 || h->dynindx == -1)
7205 {
7206 tsec = htab->glink;
7207 toff = ent->glink_offset;
7208 }
7209 else
7210 {
7211 tsec = htab->elf.splt;
7212 toff = ent->plt.offset;
7213 }
7214 }
7215 }
7216
7217 /* If the branch and target are in the same section, you have
7218 no hope of adding stubs. We'll error out later should the
7219 branch overflow. */
7220 if (tsec == isec)
7221 continue;
7222
7223 /* There probably isn't any reason to handle symbols in
7224 SEC_MERGE sections; SEC_MERGE doesn't seem a likely
7225 attribute for a code section, and we are only looking at
7226 branches. However, implement it correctly here as a
7227 reference for other target relax_section functions. */
7228 if (0 && tsec->sec_info_type == SEC_INFO_TYPE_MERGE)
7229 {
7230 /* At this stage in linking, no SEC_MERGE symbol has been
7231 adjusted, so all references to such symbols need to be
7232 passed through _bfd_merged_section_offset. (Later, in
7233 relocate_section, all SEC_MERGE symbols *except* for
7234 section symbols have been adjusted.)
7235
7236 gas may reduce relocations against symbols in SEC_MERGE
7237 sections to a relocation against the section symbol when
7238 the original addend was zero. When the reloc is against
7239 a section symbol we should include the addend in the
7240 offset passed to _bfd_merged_section_offset, since the
7241 location of interest is the original symbol. On the
7242 other hand, an access to "sym+addend" where "sym" is not
7243 a section symbol should not include the addend; Such an
7244 access is presumed to be an offset from "sym"; The
7245 location of interest is just "sym". */
7246 if (sym_type == STT_SECTION)
7247 toff += irel->r_addend;
7248
7249 toff
7250 = _bfd_merged_section_offset (abfd, &tsec,
7251 elf_section_data (tsec)->sec_info,
7252 toff);
7253
7254 if (sym_type != STT_SECTION)
7255 toff += irel->r_addend;
7256 }
7257 /* PLTREL24 addends are special. */
7258 else if (r_type != R_PPC_PLTREL24)
7259 toff += irel->r_addend;
7260
7261 /* Attempted -shared link of non-pic code loses. */
7262 if ((!bfd_link_relocatable (link_info)
7263 && tsec == bfd_und_section_ptr)
7264 || tsec->output_section == NULL
7265 || (tsec->owner != NULL
7266 && (tsec->owner->flags & BFD_PLUGIN) != 0))
7267 continue;
7268
7269 roff = irel->r_offset;
7270
7271 /* If the branch is in range, no need to do anything. */
7272 if (tsec != bfd_und_section_ptr
7273 && (!bfd_link_relocatable (link_info)
7274 /* A relocatable link may have sections moved during
7275 final link, so do not presume they remain in range. */
7276 || tsec->output_section == isec->output_section))
7277 {
7278 bfd_vma symaddr, reladdr;
7279
7280 symaddr = tsec->output_section->vma + tsec->output_offset + toff;
7281 reladdr = isec->output_section->vma + isec->output_offset + roff;
7282 if (symaddr - reladdr + max_branch_offset
7283 < 2 * max_branch_offset)
7284 continue;
7285 }
7286
7287 /* Look for an existing fixup to this address. */
7288 for (f = branch_fixups; f ; f = f->next)
7289 if (f->tsec == tsec && f->toff == toff)
7290 break;
7291
7292 if (f == NULL)
7293 {
7294 size_t size;
7295 unsigned long stub_rtype;
7296
7297 val = trampoff - roff;
7298 if (val >= max_branch_offset)
7299 /* Oh dear, we can't reach a trampoline. Don't try to add
7300 one. We'll report an error later. */
7301 continue;
7302
7303 if (bfd_link_pic (link_info))
7304 {
7305 size = 4 * ARRAY_SIZE (shared_stub_entry);
7306 insn_offset = 12;
7307 }
7308 else
7309 {
7310 size = 4 * ARRAY_SIZE (stub_entry);
7311 insn_offset = 0;
7312 }
7313 stub_rtype = R_PPC_RELAX;
7314 if (tsec == htab->elf.splt
7315 || tsec == htab->glink)
7316 {
7317 stub_rtype = R_PPC_RELAX_PLT;
7318 if (r_type == R_PPC_PLTREL24)
7319 stub_rtype = R_PPC_RELAX_PLTREL24;
7320 }
7321
7322 /* Hijack the old relocation. Since we need two
7323 relocations for this use a "composite" reloc. */
7324 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
7325 stub_rtype);
7326 irel->r_offset = trampoff + insn_offset;
7327 if (r_type == R_PPC_PLTREL24
7328 && stub_rtype != R_PPC_RELAX_PLTREL24)
7329 irel->r_addend = 0;
7330
7331 /* Record the fixup so we don't do it again this section. */
7332 f = bfd_malloc (sizeof (*f));
7333 f->next = branch_fixups;
7334 f->tsec = tsec;
7335 f->toff = toff;
7336 f->trampoff = trampoff;
7337 branch_fixups = f;
7338
7339 trampoff += size;
7340 changes++;
7341 }
7342 else
7343 {
7344 val = f->trampoff - roff;
7345 if (val >= max_branch_offset)
7346 continue;
7347
7348 /* Nop out the reloc, since we're finalizing things here. */
7349 irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
7350 }
7351
7352 /* Get the section contents. */
7353 if (contents == NULL)
7354 {
7355 /* Get cached copy if it exists. */
7356 if (elf_section_data (isec)->this_hdr.contents != NULL)
7357 contents = elf_section_data (isec)->this_hdr.contents;
7358 /* Go get them off disk. */
7359 else if (!bfd_malloc_and_get_section (abfd, isec, &contents))
7360 goto error_return;
7361 }
7362
7363 /* Fix up the existing branch to hit the trampoline. */
7364 hit_addr = contents + roff;
7365 switch (r_type)
7366 {
7367 case R_PPC_REL24:
7368 case R_PPC_LOCAL24PC:
7369 case R_PPC_PLTREL24:
7370 t0 = bfd_get_32 (abfd, hit_addr);
7371 t0 &= ~0x3fffffc;
7372 t0 |= val & 0x3fffffc;
7373 bfd_put_32 (abfd, t0, hit_addr);
7374 break;
7375
7376 case R_PPC_REL14:
7377 case R_PPC_REL14_BRTAKEN:
7378 case R_PPC_REL14_BRNTAKEN:
7379 t0 = bfd_get_32 (abfd, hit_addr);
7380 t0 &= ~0xfffc;
7381 t0 |= val & 0xfffc;
7382 bfd_put_32 (abfd, t0, hit_addr);
7383 break;
7384 }
7385 }
7386
7387 while (branch_fixups != NULL)
7388 {
7389 struct one_branch_fixup *f = branch_fixups;
7390 branch_fixups = branch_fixups->next;
7391 free (f);
7392 }
7393 }
7394
7395 workaround_change = FALSE;
7396 newsize = trampoff;
7397 if (htab->params->ppc476_workaround
7398 && (!bfd_link_relocatable (link_info)
7399 || isec->output_section->alignment_power >= htab->params->pagesize_p2))
7400 {
7401 bfd_vma addr, end_addr;
7402 unsigned int crossings;
7403 bfd_vma pagesize = (bfd_vma) 1 << htab->params->pagesize_p2;
7404
7405 addr = isec->output_section->vma + isec->output_offset;
7406 end_addr = addr + trampoff;
7407 addr &= -pagesize;
7408 crossings = ((end_addr & -pagesize) - addr) >> htab->params->pagesize_p2;
7409 if (crossings != 0)
7410 {
7411 /* Keep space aligned, to ensure the patch code itself does
7412 not cross a page. Don't decrease size calculated on a
7413 previous pass as otherwise we might never settle on a layout. */
7414 newsize = 15 - ((end_addr - 1) & 15);
7415 newsize += crossings * 16;
7416 if (relax_info->workaround_size < newsize)
7417 {
7418 relax_info->workaround_size = newsize;
7419 workaround_change = TRUE;
7420 }
7421 /* Ensure relocate_section is called. */
7422 isec->flags |= SEC_RELOC;
7423 }
7424 newsize = trampoff + relax_info->workaround_size;
7425 }
7426
7427 if (htab->params->pic_fixup > 0)
7428 {
7429 picfixup_size -= relax_info->picfixup_size;
7430 if (picfixup_size != 0)
7431 relax_info->picfixup_size += picfixup_size;
7432 newsize += relax_info->picfixup_size;
7433 }
7434
7435 if (changes != 0 || picfixup_size != 0 || workaround_change)
7436 isec->size = newsize;
7437
7438 if (isymbuf != NULL
7439 && symtab_hdr->contents != (unsigned char *) isymbuf)
7440 {
7441 if (! link_info->keep_memory)
7442 free (isymbuf);
7443 else
7444 {
7445 /* Cache the symbols for elf_link_input_bfd. */
7446 symtab_hdr->contents = (unsigned char *) isymbuf;
7447 }
7448 }
7449
7450 if (contents != NULL
7451 && elf_section_data (isec)->this_hdr.contents != contents)
7452 {
7453 if (!changes && !link_info->keep_memory)
7454 free (contents);
7455 else
7456 {
7457 /* Cache the section contents for elf_link_input_bfd. */
7458 elf_section_data (isec)->this_hdr.contents = contents;
7459 }
7460 }
7461
7462 changes += picfixup_size;
7463 if (changes != 0)
7464 {
7465 /* Append sufficient NOP relocs so we can write out relocation
7466 information for the trampolines. */
7467 Elf_Internal_Shdr *rel_hdr;
7468 Elf_Internal_Rela *new_relocs = bfd_malloc ((changes + isec->reloc_count)
7469 * sizeof (*new_relocs));
7470 unsigned ix;
7471
7472 if (!new_relocs)
7473 goto error_return;
7474 memcpy (new_relocs, internal_relocs,
7475 isec->reloc_count * sizeof (*new_relocs));
7476 for (ix = changes; ix--;)
7477 {
7478 irel = new_relocs + ix + isec->reloc_count;
7479
7480 irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
7481 }
7482 if (internal_relocs != elf_section_data (isec)->relocs)
7483 free (internal_relocs);
7484 elf_section_data (isec)->relocs = new_relocs;
7485 isec->reloc_count += changes;
7486 rel_hdr = _bfd_elf_single_rel_hdr (isec);
7487 rel_hdr->sh_size += changes * rel_hdr->sh_entsize;
7488 }
7489 else if (internal_relocs != NULL
7490 && elf_section_data (isec)->relocs != internal_relocs)
7491 free (internal_relocs);
7492
7493 *again = changes != 0 || workaround_change;
7494 return TRUE;
7495
7496 error_return:
7497 while (branch_fixups != NULL)
7498 {
7499 struct one_branch_fixup *f = branch_fixups;
7500 branch_fixups = branch_fixups->next;
7501 free (f);
7502 }
7503 if (isymbuf != NULL && (unsigned char *) isymbuf != symtab_hdr->contents)
7504 free (isymbuf);
7505 if (contents != NULL
7506 && elf_section_data (isec)->this_hdr.contents != contents)
7507 free (contents);
7508 if (internal_relocs != NULL
7509 && elf_section_data (isec)->relocs != internal_relocs)
7510 free (internal_relocs);
7511 return FALSE;
7512 }
7513 \f
7514 /* What to do when ld finds relocations against symbols defined in
7515 discarded sections. */
7516
7517 static unsigned int
7518 ppc_elf_action_discarded (asection *sec)
7519 {
7520 if (strcmp (".fixup", sec->name) == 0)
7521 return 0;
7522
7523 if (strcmp (".got2", sec->name) == 0)
7524 return 0;
7525
7526 return _bfd_elf_default_action_discarded (sec);
7527 }
7528 \f
7529 /* Fill in the address for a pointer generated in a linker section. */
7530
7531 static bfd_vma
7532 elf_finish_pointer_linker_section (bfd *input_bfd,
7533 elf_linker_section_t *lsect,
7534 struct elf_link_hash_entry *h,
7535 bfd_vma relocation,
7536 const Elf_Internal_Rela *rel)
7537 {
7538 elf_linker_section_pointers_t *linker_section_ptr;
7539
7540 BFD_ASSERT (lsect != NULL);
7541
7542 if (h != NULL)
7543 {
7544 /* Handle global symbol. */
7545 struct ppc_elf_link_hash_entry *eh;
7546
7547 eh = (struct ppc_elf_link_hash_entry *) h;
7548 BFD_ASSERT (eh->elf.def_regular);
7549 linker_section_ptr = eh->linker_section_pointer;
7550 }
7551 else
7552 {
7553 /* Handle local symbol. */
7554 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
7555
7556 BFD_ASSERT (is_ppc_elf (input_bfd));
7557 BFD_ASSERT (elf_local_ptr_offsets (input_bfd) != NULL);
7558 linker_section_ptr = elf_local_ptr_offsets (input_bfd)[r_symndx];
7559 }
7560
7561 linker_section_ptr = elf_find_pointer_linker_section (linker_section_ptr,
7562 rel->r_addend,
7563 lsect);
7564 BFD_ASSERT (linker_section_ptr != NULL);
7565
7566 /* Offset will always be a multiple of four, so use the bottom bit
7567 as a "written" flag. */
7568 if ((linker_section_ptr->offset & 1) == 0)
7569 {
7570 bfd_put_32 (lsect->section->owner,
7571 relocation + linker_section_ptr->addend,
7572 lsect->section->contents + linker_section_ptr->offset);
7573 linker_section_ptr->offset += 1;
7574 }
7575
7576 relocation = (lsect->section->output_section->vma
7577 + lsect->section->output_offset
7578 + linker_section_ptr->offset - 1
7579 - SYM_VAL (lsect->sym));
7580
7581 #ifdef DEBUG
7582 fprintf (stderr,
7583 "Finish pointer in linker section %s, offset = %ld (0x%lx)\n",
7584 lsect->name, (long) relocation, (long) relocation);
7585 #endif
7586
7587 return relocation;
7588 }
7589
7590 #define PPC_LO(v) ((v) & 0xffff)
7591 #define PPC_HI(v) (((v) >> 16) & 0xffff)
7592 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
7593
7594 static void
7595 write_glink_stub (struct plt_entry *ent, asection *plt_sec, unsigned char *p,
7596 struct bfd_link_info *info)
7597 {
7598 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
7599 bfd *output_bfd = info->output_bfd;
7600 bfd_vma plt;
7601
7602 plt = ((ent->plt.offset & ~1)
7603 + plt_sec->output_section->vma
7604 + plt_sec->output_offset);
7605
7606 if (bfd_link_pic (info))
7607 {
7608 bfd_vma got = 0;
7609
7610 if (ent->addend >= 32768)
7611 got = (ent->addend
7612 + ent->sec->output_section->vma
7613 + ent->sec->output_offset);
7614 else if (htab->elf.hgot != NULL)
7615 got = SYM_VAL (htab->elf.hgot);
7616
7617 plt -= got;
7618
7619 if (plt + 0x8000 < 0x10000)
7620 {
7621 bfd_put_32 (output_bfd, LWZ_11_30 + PPC_LO (plt), p);
7622 p += 4;
7623 bfd_put_32 (output_bfd, MTCTR_11, p);
7624 p += 4;
7625 bfd_put_32 (output_bfd, BCTR, p);
7626 p += 4;
7627 bfd_put_32 (output_bfd, htab->params->ppc476_workaround ? BA : NOP, p);
7628 p += 4;
7629 }
7630 else
7631 {
7632 bfd_put_32 (output_bfd, ADDIS_11_30 + PPC_HA (plt), p);
7633 p += 4;
7634 bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
7635 p += 4;
7636 bfd_put_32 (output_bfd, MTCTR_11, p);
7637 p += 4;
7638 bfd_put_32 (output_bfd, BCTR, p);
7639 p += 4;
7640 }
7641 }
7642 else
7643 {
7644 bfd_put_32 (output_bfd, LIS_11 + PPC_HA (plt), p);
7645 p += 4;
7646 bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
7647 p += 4;
7648 bfd_put_32 (output_bfd, MTCTR_11, p);
7649 p += 4;
7650 bfd_put_32 (output_bfd, BCTR, p);
7651 p += 4;
7652 }
7653 }
7654
7655 /* Return true if symbol is defined statically. */
7656
7657 static bfd_boolean
7658 is_static_defined (struct elf_link_hash_entry *h)
7659 {
7660 return ((h->root.type == bfd_link_hash_defined
7661 || h->root.type == bfd_link_hash_defweak)
7662 && h->root.u.def.section != NULL
7663 && h->root.u.def.section->output_section != NULL);
7664 }
7665
7666 /* If INSN is an opcode that may be used with an @tls operand, return
7667 the transformed insn for TLS optimisation, otherwise return 0. If
7668 REG is non-zero only match an insn with RB or RA equal to REG. */
7669
7670 unsigned int
7671 _bfd_elf_ppc_at_tls_transform (unsigned int insn, unsigned int reg)
7672 {
7673 unsigned int rtra;
7674
7675 if ((insn & (0x3f << 26)) != 31 << 26)
7676 return 0;
7677
7678 if (reg == 0 || ((insn >> 11) & 0x1f) == reg)
7679 rtra = insn & ((1 << 26) - (1 << 16));
7680 else if (((insn >> 16) & 0x1f) == reg)
7681 rtra = (insn & (0x1f << 21)) | ((insn & (0x1f << 11)) << 5);
7682 else
7683 return 0;
7684
7685 if ((insn & (0x3ff << 1)) == 266 << 1)
7686 /* add -> addi. */
7687 insn = 14 << 26;
7688 else if ((insn & (0x1f << 1)) == 23 << 1
7689 && ((insn & (0x1f << 6)) < 14 << 6
7690 || ((insn & (0x1f << 6)) >= 16 << 6
7691 && (insn & (0x1f << 6)) < 24 << 6)))
7692 /* load and store indexed -> dform. */
7693 insn = (32 | ((insn >> 6) & 0x1f)) << 26;
7694 else if ((insn & (((0x1a << 5) | 0x1f) << 1)) == 21 << 1)
7695 /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
7696 insn = ((58 | ((insn >> 6) & 4)) << 26) | ((insn >> 6) & 1);
7697 else if ((insn & (((0x1f << 5) | 0x1f) << 1)) == 341 << 1)
7698 /* lwax -> lwa. */
7699 insn = (58 << 26) | 2;
7700 else
7701 return 0;
7702 insn |= rtra;
7703 return insn;
7704 }
7705
7706 /* If INSN is an opcode that may be used with an @tprel operand, return
7707 the transformed insn for an undefined weak symbol, ie. with the
7708 thread pointer REG operand removed. Otherwise return 0. */
7709
7710 unsigned int
7711 _bfd_elf_ppc_at_tprel_transform (unsigned int insn, unsigned int reg)
7712 {
7713 if ((insn & (0x1f << 16)) == reg << 16
7714 && ((insn & (0x3f << 26)) == 14u << 26 /* addi */
7715 || (insn & (0x3f << 26)) == 15u << 26 /* addis */
7716 || (insn & (0x3f << 26)) == 32u << 26 /* lwz */
7717 || (insn & (0x3f << 26)) == 34u << 26 /* lbz */
7718 || (insn & (0x3f << 26)) == 36u << 26 /* stw */
7719 || (insn & (0x3f << 26)) == 38u << 26 /* stb */
7720 || (insn & (0x3f << 26)) == 40u << 26 /* lhz */
7721 || (insn & (0x3f << 26)) == 42u << 26 /* lha */
7722 || (insn & (0x3f << 26)) == 44u << 26 /* sth */
7723 || (insn & (0x3f << 26)) == 46u << 26 /* lmw */
7724 || (insn & (0x3f << 26)) == 47u << 26 /* stmw */
7725 || (insn & (0x3f << 26)) == 48u << 26 /* lfs */
7726 || (insn & (0x3f << 26)) == 50u << 26 /* lfd */
7727 || (insn & (0x3f << 26)) == 52u << 26 /* stfs */
7728 || (insn & (0x3f << 26)) == 54u << 26 /* stfd */
7729 || ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
7730 && (insn & 3) != 1)
7731 || ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */
7732 && ((insn & 3) == 0 || (insn & 3) == 3))))
7733 {
7734 insn &= ~(0x1f << 16);
7735 }
7736 else if ((insn & (0x1f << 21)) == reg << 21
7737 && ((insn & (0x3e << 26)) == 24u << 26 /* ori, oris */
7738 || (insn & (0x3e << 26)) == 26u << 26 /* xori,xoris */
7739 || (insn & (0x3e << 26)) == 28u << 26 /* andi,andis */))
7740 {
7741 insn &= ~(0x1f << 21);
7742 insn |= (insn & (0x1f << 16)) << 5;
7743 if ((insn & (0x3e << 26)) == 26 << 26 /* xori,xoris */)
7744 insn -= 2 >> 26; /* convert to ori,oris */
7745 }
7746 else
7747 insn = 0;
7748 return insn;
7749 }
7750
7751 static bfd_boolean
7752 is_insn_ds_form (unsigned int insn)
7753 {
7754 return ((insn & (0x3f << 26)) == 58u << 26 /* ld,ldu,lwa */
7755 || (insn & (0x3f << 26)) == 62u << 26 /* std,stdu,stq */
7756 || (insn & (0x3f << 26)) == 57u << 26 /* lfdp */
7757 || (insn & (0x3f << 26)) == 61u << 26 /* stfdp */);
7758 }
7759
7760 static bfd_boolean
7761 is_insn_dq_form (unsigned int insn)
7762 {
7763 return ((insn & (0x3f << 26)) == 56u << 26 /* lq */
7764 || ((insn & (0x3f << 26)) == (61u << 26) /* lxv, stxv */
7765 && (insn & 3) == 1));
7766 }
7767
7768 /* The RELOCATE_SECTION function is called by the ELF backend linker
7769 to handle the relocations for a section.
7770
7771 The relocs are always passed as Rela structures; if the section
7772 actually uses Rel structures, the r_addend field will always be
7773 zero.
7774
7775 This function is responsible for adjust the section contents as
7776 necessary, and (if using Rela relocs and generating a
7777 relocatable output file) adjusting the reloc addend as
7778 necessary.
7779
7780 This function does not have to worry about setting the reloc
7781 address or the reloc symbol index.
7782
7783 LOCAL_SYMS is a pointer to the swapped in local symbols.
7784
7785 LOCAL_SECTIONS is an array giving the section in the input file
7786 corresponding to the st_shndx field of each local symbol.
7787
7788 The global hash table entry for the global symbols can be found
7789 via elf_sym_hashes (input_bfd).
7790
7791 When generating relocatable output, this function must handle
7792 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
7793 going to be the section symbol corresponding to the output
7794 section, which means that the addend must be adjusted
7795 accordingly. */
7796
7797 static bfd_boolean
7798 ppc_elf_relocate_section (bfd *output_bfd,
7799 struct bfd_link_info *info,
7800 bfd *input_bfd,
7801 asection *input_section,
7802 bfd_byte *contents,
7803 Elf_Internal_Rela *relocs,
7804 Elf_Internal_Sym *local_syms,
7805 asection **local_sections)
7806 {
7807 Elf_Internal_Shdr *symtab_hdr;
7808 struct elf_link_hash_entry **sym_hashes;
7809 struct ppc_elf_link_hash_table *htab;
7810 Elf_Internal_Rela *rel;
7811 Elf_Internal_Rela *wrel;
7812 Elf_Internal_Rela *relend;
7813 Elf_Internal_Rela outrel;
7814 asection *got2;
7815 bfd_vma *local_got_offsets;
7816 bfd_boolean ret = TRUE;
7817 bfd_vma d_offset = (bfd_big_endian (input_bfd) ? 2 : 0);
7818 bfd_boolean is_vxworks_tls;
7819 unsigned int picfixup_size = 0;
7820 struct ppc_elf_relax_info *relax_info = NULL;
7821
7822 #ifdef DEBUG
7823 _bfd_error_handler ("ppc_elf_relocate_section called for %B section %A, "
7824 "%ld relocations%s",
7825 input_bfd, input_section,
7826 (long) input_section->reloc_count,
7827 (bfd_link_relocatable (info)) ? " (relocatable)" : "");
7828 #endif
7829
7830 got2 = bfd_get_section_by_name (input_bfd, ".got2");
7831
7832 /* Initialize howto table if not already done. */
7833 if (!ppc_elf_howto_table[R_PPC_ADDR32])
7834 ppc_elf_howto_init ();
7835
7836 htab = ppc_elf_hash_table (info);
7837 local_got_offsets = elf_local_got_offsets (input_bfd);
7838 symtab_hdr = &elf_symtab_hdr (input_bfd);
7839 sym_hashes = elf_sym_hashes (input_bfd);
7840 /* We have to handle relocations in vxworks .tls_vars sections
7841 specially, because the dynamic loader is 'weird'. */
7842 is_vxworks_tls = (htab->is_vxworks && bfd_link_pic (info)
7843 && !strcmp (input_section->output_section->name,
7844 ".tls_vars"));
7845 if (input_section->sec_info_type == SEC_INFO_TYPE_TARGET)
7846 relax_info = elf_section_data (input_section)->sec_info;
7847 rel = wrel = relocs;
7848 relend = relocs + input_section->reloc_count;
7849 for (; rel < relend; wrel++, rel++)
7850 {
7851 enum elf_ppc_reloc_type r_type;
7852 bfd_vma addend;
7853 bfd_reloc_status_type r;
7854 Elf_Internal_Sym *sym;
7855 asection *sec;
7856 struct elf_link_hash_entry *h;
7857 const char *sym_name;
7858 reloc_howto_type *howto;
7859 unsigned long r_symndx;
7860 bfd_vma relocation;
7861 bfd_vma branch_bit, from;
7862 bfd_boolean unresolved_reloc;
7863 bfd_boolean warned;
7864 unsigned int tls_type, tls_mask, tls_gd;
7865 struct plt_entry **ifunc;
7866 struct reloc_howto_struct alt_howto;
7867
7868 again:
7869 r_type = ELF32_R_TYPE (rel->r_info);
7870 sym = NULL;
7871 sec = NULL;
7872 h = NULL;
7873 unresolved_reloc = FALSE;
7874 warned = FALSE;
7875 r_symndx = ELF32_R_SYM (rel->r_info);
7876
7877 if (r_symndx < symtab_hdr->sh_info)
7878 {
7879 sym = local_syms + r_symndx;
7880 sec = local_sections[r_symndx];
7881 sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
7882
7883 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
7884 }
7885 else
7886 {
7887 bfd_boolean ignored;
7888
7889 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
7890 r_symndx, symtab_hdr, sym_hashes,
7891 h, sec, relocation,
7892 unresolved_reloc, warned, ignored);
7893
7894 sym_name = h->root.root.string;
7895 }
7896
7897 if (sec != NULL && discarded_section (sec))
7898 {
7899 /* For relocs against symbols from removed linkonce sections,
7900 or sections discarded by a linker script, we just want the
7901 section contents zeroed. Avoid any special processing. */
7902 howto = NULL;
7903 if (r_type < R_PPC_max)
7904 howto = ppc_elf_howto_table[r_type];
7905
7906 _bfd_clear_contents (howto, input_bfd, input_section,
7907 contents + rel->r_offset);
7908 wrel->r_offset = rel->r_offset;
7909 wrel->r_info = 0;
7910 wrel->r_addend = 0;
7911
7912 /* For ld -r, remove relocations in debug sections against
7913 sections defined in discarded sections. Not done for
7914 non-debug to preserve relocs in .eh_frame which the
7915 eh_frame editing code expects to be present. */
7916 if (bfd_link_relocatable (info)
7917 && (input_section->flags & SEC_DEBUGGING))
7918 wrel--;
7919
7920 continue;
7921 }
7922
7923 if (bfd_link_relocatable (info))
7924 {
7925 if (got2 != NULL
7926 && r_type == R_PPC_PLTREL24
7927 && rel->r_addend != 0)
7928 {
7929 /* R_PPC_PLTREL24 is rather special. If non-zero, the
7930 addend specifies the GOT pointer offset within .got2. */
7931 rel->r_addend += got2->output_offset;
7932 }
7933 if (r_type != R_PPC_RELAX_PLT
7934 && r_type != R_PPC_RELAX_PLTREL24
7935 && r_type != R_PPC_RELAX)
7936 goto copy_reloc;
7937 }
7938
7939 /* TLS optimizations. Replace instruction sequences and relocs
7940 based on information we collected in tls_optimize. We edit
7941 RELOCS so that --emit-relocs will output something sensible
7942 for the final instruction stream. */
7943 tls_mask = 0;
7944 tls_gd = 0;
7945 if (h != NULL)
7946 tls_mask = ((struct ppc_elf_link_hash_entry *) h)->tls_mask;
7947 else if (local_got_offsets != NULL)
7948 {
7949 struct plt_entry **local_plt;
7950 char *lgot_masks;
7951 local_plt
7952 = (struct plt_entry **) (local_got_offsets + symtab_hdr->sh_info);
7953 lgot_masks = (char *) (local_plt + symtab_hdr->sh_info);
7954 tls_mask = lgot_masks[r_symndx];
7955 }
7956
7957 /* Ensure reloc mapping code below stays sane. */
7958 if ((R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TLSGD16 & 3)
7959 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TLSGD16_LO & 3)
7960 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TLSGD16_HI & 3)
7961 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TLSGD16_HA & 3)
7962 || (R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TPREL16 & 3)
7963 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TPREL16_LO & 3)
7964 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TPREL16_HI & 3)
7965 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TPREL16_HA & 3))
7966 abort ();
7967 switch (r_type)
7968 {
7969 default:
7970 break;
7971
7972 case R_PPC_GOT_TPREL16:
7973 case R_PPC_GOT_TPREL16_LO:
7974 if ((tls_mask & TLS_TLS) != 0
7975 && (tls_mask & TLS_TPREL) == 0)
7976 {
7977 bfd_vma insn;
7978
7979 insn = bfd_get_32 (input_bfd,
7980 contents + rel->r_offset - d_offset);
7981 insn &= 31 << 21;
7982 insn |= 0x3c020000; /* addis 0,2,0 */
7983 bfd_put_32 (input_bfd, insn,
7984 contents + rel->r_offset - d_offset);
7985 r_type = R_PPC_TPREL16_HA;
7986 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7987 }
7988 break;
7989
7990 case R_PPC_TLS:
7991 if ((tls_mask & TLS_TLS) != 0
7992 && (tls_mask & TLS_TPREL) == 0)
7993 {
7994 bfd_vma insn;
7995
7996 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
7997 insn = _bfd_elf_ppc_at_tls_transform (insn, 2);
7998 if (insn == 0)
7999 abort ();
8000 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
8001 r_type = R_PPC_TPREL16_LO;
8002 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
8003
8004 /* Was PPC_TLS which sits on insn boundary, now
8005 PPC_TPREL16_LO which is at low-order half-word. */
8006 rel->r_offset += d_offset;
8007 }
8008 break;
8009
8010 case R_PPC_GOT_TLSGD16_HI:
8011 case R_PPC_GOT_TLSGD16_HA:
8012 tls_gd = TLS_TPRELGD;
8013 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
8014 goto tls_gdld_hi;
8015 break;
8016
8017 case R_PPC_GOT_TLSLD16_HI:
8018 case R_PPC_GOT_TLSLD16_HA:
8019 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
8020 {
8021 tls_gdld_hi:
8022 if ((tls_mask & tls_gd) != 0)
8023 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
8024 + R_PPC_GOT_TPREL16);
8025 else
8026 {
8027 rel->r_offset -= d_offset;
8028 bfd_put_32 (input_bfd, NOP, contents + rel->r_offset);
8029 r_type = R_PPC_NONE;
8030 }
8031 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
8032 }
8033 break;
8034
8035 case R_PPC_GOT_TLSGD16:
8036 case R_PPC_GOT_TLSGD16_LO:
8037 tls_gd = TLS_TPRELGD;
8038 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
8039 goto tls_ldgd_opt;
8040 break;
8041
8042 case R_PPC_GOT_TLSLD16:
8043 case R_PPC_GOT_TLSLD16_LO:
8044 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
8045 {
8046 unsigned int insn1, insn2;
8047 bfd_vma offset;
8048
8049 tls_ldgd_opt:
8050 offset = (bfd_vma) -1;
8051 /* If not using the newer R_PPC_TLSGD/LD to mark
8052 __tls_get_addr calls, we must trust that the call
8053 stays with its arg setup insns, ie. that the next
8054 reloc is the __tls_get_addr call associated with
8055 the current reloc. Edit both insns. */
8056 if (input_section->has_tls_get_addr_call
8057 && rel + 1 < relend
8058 && branch_reloc_hash_match (input_bfd, rel + 1,
8059 htab->tls_get_addr))
8060 offset = rel[1].r_offset;
8061 /* We read the low GOT_TLS insn because we need to keep
8062 the destination reg. It may be something other than
8063 the usual r3, and moved to r3 before the call by
8064 intervening code. */
8065 insn1 = bfd_get_32 (input_bfd,
8066 contents + rel->r_offset - d_offset);
8067 if ((tls_mask & tls_gd) != 0)
8068 {
8069 /* IE */
8070 insn1 &= (0x1f << 21) | (0x1f << 16);
8071 insn1 |= 32 << 26; /* lwz */
8072 if (offset != (bfd_vma) -1)
8073 {
8074 rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
8075 insn2 = 0x7c631214; /* add 3,3,2 */
8076 bfd_put_32 (input_bfd, insn2, contents + offset);
8077 }
8078 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
8079 + R_PPC_GOT_TPREL16);
8080 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
8081 }
8082 else
8083 {
8084 /* LE */
8085 insn1 &= 0x1f << 21;
8086 insn1 |= 0x3c020000; /* addis r,2,0 */
8087 if (tls_gd == 0)
8088 {
8089 /* Was an LD reloc. */
8090 for (r_symndx = 0;
8091 r_symndx < symtab_hdr->sh_info;
8092 r_symndx++)
8093 if (local_sections[r_symndx] == sec)
8094 break;
8095 if (r_symndx >= symtab_hdr->sh_info)
8096 r_symndx = STN_UNDEF;
8097 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
8098 if (r_symndx != STN_UNDEF)
8099 rel->r_addend -= (local_syms[r_symndx].st_value
8100 + sec->output_offset
8101 + sec->output_section->vma);
8102 }
8103 r_type = R_PPC_TPREL16_HA;
8104 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
8105 if (offset != (bfd_vma) -1)
8106 {
8107 rel[1].r_info = ELF32_R_INFO (r_symndx, R_PPC_TPREL16_LO);
8108 rel[1].r_offset = offset + d_offset;
8109 rel[1].r_addend = rel->r_addend;
8110 insn2 = 0x38630000; /* addi 3,3,0 */
8111 bfd_put_32 (input_bfd, insn2, contents + offset);
8112 }
8113 }
8114 bfd_put_32 (input_bfd, insn1,
8115 contents + rel->r_offset - d_offset);
8116 if (tls_gd == 0)
8117 {
8118 /* We changed the symbol on an LD reloc. Start over
8119 in order to get h, sym, sec etc. right. */
8120 goto again;
8121 }
8122 }
8123 break;
8124
8125 case R_PPC_TLSGD:
8126 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
8127 {
8128 unsigned int insn2;
8129 bfd_vma offset = rel->r_offset;
8130
8131 if ((tls_mask & TLS_TPRELGD) != 0)
8132 {
8133 /* IE */
8134 r_type = R_PPC_NONE;
8135 insn2 = 0x7c631214; /* add 3,3,2 */
8136 }
8137 else
8138 {
8139 /* LE */
8140 r_type = R_PPC_TPREL16_LO;
8141 rel->r_offset += d_offset;
8142 insn2 = 0x38630000; /* addi 3,3,0 */
8143 }
8144 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
8145 bfd_put_32 (input_bfd, insn2, contents + offset);
8146 /* Zap the reloc on the _tls_get_addr call too. */
8147 BFD_ASSERT (offset == rel[1].r_offset);
8148 rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
8149 }
8150 break;
8151
8152 case R_PPC_TLSLD:
8153 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
8154 {
8155 unsigned int insn2;
8156
8157 for (r_symndx = 0;
8158 r_symndx < symtab_hdr->sh_info;
8159 r_symndx++)
8160 if (local_sections[r_symndx] == sec)
8161 break;
8162 if (r_symndx >= symtab_hdr->sh_info)
8163 r_symndx = STN_UNDEF;
8164 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
8165 if (r_symndx != STN_UNDEF)
8166 rel->r_addend -= (local_syms[r_symndx].st_value
8167 + sec->output_offset
8168 + sec->output_section->vma);
8169
8170 rel->r_info = ELF32_R_INFO (r_symndx, R_PPC_TPREL16_LO);
8171 rel->r_offset += d_offset;
8172 insn2 = 0x38630000; /* addi 3,3,0 */
8173 bfd_put_32 (input_bfd, insn2,
8174 contents + rel->r_offset - d_offset);
8175 /* Zap the reloc on the _tls_get_addr call too. */
8176 BFD_ASSERT (rel->r_offset - d_offset == rel[1].r_offset);
8177 rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
8178 goto again;
8179 }
8180 break;
8181 }
8182
8183 /* Handle other relocations that tweak non-addend part of insn. */
8184 branch_bit = 0;
8185 switch (r_type)
8186 {
8187 default:
8188 break;
8189
8190 /* Branch taken prediction relocations. */
8191 case R_PPC_ADDR14_BRTAKEN:
8192 case R_PPC_REL14_BRTAKEN:
8193 branch_bit = BRANCH_PREDICT_BIT;
8194 /* Fall through. */
8195
8196 /* Branch not taken prediction relocations. */
8197 case R_PPC_ADDR14_BRNTAKEN:
8198 case R_PPC_REL14_BRNTAKEN:
8199 {
8200 bfd_vma insn;
8201
8202 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
8203 insn &= ~BRANCH_PREDICT_BIT;
8204 insn |= branch_bit;
8205
8206 from = (rel->r_offset
8207 + input_section->output_offset
8208 + input_section->output_section->vma);
8209
8210 /* Invert 'y' bit if not the default. */
8211 if ((bfd_signed_vma) (relocation + rel->r_addend - from) < 0)
8212 insn ^= BRANCH_PREDICT_BIT;
8213
8214 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
8215 break;
8216 }
8217 }
8218
8219 if (ELIMINATE_COPY_RELOCS
8220 && h != NULL
8221 && !h->def_regular
8222 && h->protected_def
8223 && ppc_elf_hash_entry (h)->has_addr16_ha
8224 && ppc_elf_hash_entry (h)->has_addr16_lo
8225 && htab->params->pic_fixup > 0)
8226 {
8227 /* Convert lis;addi or lis;load/store accessing a protected
8228 variable defined in a shared library to PIC. */
8229 unsigned int insn;
8230
8231 if (r_type == R_PPC_ADDR16_HA)
8232 {
8233 insn = bfd_get_32 (input_bfd,
8234 contents + rel->r_offset - d_offset);
8235 if ((insn & (0x3f << 26)) == (15u << 26)
8236 && (insn & (0x1f << 16)) == 0 /* lis */)
8237 {
8238 bfd_byte *p;
8239 bfd_vma off;
8240 bfd_vma got_addr;
8241
8242 p = (contents + input_section->size
8243 - relax_info->workaround_size
8244 - relax_info->picfixup_size
8245 + picfixup_size);
8246 off = (p - contents) - (rel->r_offset - d_offset);
8247 if (off > 0x1fffffc || (off & 3) != 0)
8248 info->callbacks->einfo
8249 (_("%P: %H: fixup branch overflow\n"),
8250 input_bfd, input_section, rel->r_offset);
8251
8252 bfd_put_32 (input_bfd, B | off,
8253 contents + rel->r_offset - d_offset);
8254 got_addr = (htab->elf.sgot->output_section->vma
8255 + htab->elf.sgot->output_offset
8256 + (h->got.offset & ~1));
8257 wrel->r_offset = (p - contents) + d_offset;
8258 wrel->r_info = ELF32_R_INFO (0, R_PPC_ADDR16_HA);
8259 wrel->r_addend = got_addr;
8260 insn &= ~0xffff;
8261 insn |= ((unsigned int )(got_addr + 0x8000) >> 16) & 0xffff;
8262 bfd_put_32 (input_bfd, insn, p);
8263
8264 /* Convert lis to lwz, loading address from GOT. */
8265 insn &= ~0xffff;
8266 insn ^= (32u ^ 15u) << 26;
8267 insn |= (insn & (0x1f << 21)) >> 5;
8268 insn |= got_addr & 0xffff;
8269 bfd_put_32 (input_bfd, insn, p + 4);
8270
8271 bfd_put_32 (input_bfd, B | ((-4 - off) & 0x3ffffff), p + 8);
8272 picfixup_size += 12;
8273
8274 /* Use one of the spare relocs, so --emit-relocs
8275 output is reasonable. */
8276 memmove (rel + 1, rel, (relend - rel - 1) * sizeof (*rel));
8277 wrel++, rel++;
8278 rel->r_offset = wrel[-1].r_offset + 4;
8279 rel->r_info = ELF32_R_INFO (0, R_PPC_ADDR16_LO);
8280 rel->r_addend = wrel[-1].r_addend;
8281
8282 /* Continue on as if we had a got reloc, to output
8283 dynamic reloc. */
8284 r_type = R_PPC_GOT16_LO;
8285 }
8286 else
8287 info->callbacks->einfo
8288 /* xgettext:c-format */
8289 (_("%P: %H: error: %s with unexpected instruction %x\n"),
8290 input_bfd, input_section, rel->r_offset,
8291 "R_PPC_ADDR16_HA", insn);
8292 }
8293 else if (r_type == R_PPC_ADDR16_LO)
8294 {
8295 insn = bfd_get_32 (input_bfd,
8296 contents + rel->r_offset - d_offset);
8297 if ((insn & (0x3f << 26)) == 14u << 26 /* addi */
8298 || (insn & (0x3f << 26)) == 32u << 26 /* lwz */
8299 || (insn & (0x3f << 26)) == 34u << 26 /* lbz */
8300 || (insn & (0x3f << 26)) == 36u << 26 /* stw */
8301 || (insn & (0x3f << 26)) == 38u << 26 /* stb */
8302 || (insn & (0x3f << 26)) == 40u << 26 /* lhz */
8303 || (insn & (0x3f << 26)) == 42u << 26 /* lha */
8304 || (insn & (0x3f << 26)) == 44u << 26 /* sth */
8305 || (insn & (0x3f << 26)) == 46u << 26 /* lmw */
8306 || (insn & (0x3f << 26)) == 47u << 26 /* stmw */
8307 || (insn & (0x3f << 26)) == 48u << 26 /* lfs */
8308 || (insn & (0x3f << 26)) == 50u << 26 /* lfd */
8309 || (insn & (0x3f << 26)) == 52u << 26 /* stfs */
8310 || (insn & (0x3f << 26)) == 54u << 26 /* stfd */
8311 || ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
8312 && (insn & 3) != 1)
8313 || ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */
8314 && ((insn & 3) == 0 || (insn & 3) == 3)))
8315 {
8316 /* Arrange to apply the reloc addend, if any. */
8317 relocation = 0;
8318 unresolved_reloc = FALSE;
8319 rel->r_info = ELF32_R_INFO (0, r_type);
8320 }
8321 else
8322 info->callbacks->einfo
8323 /* xgettext:c-format */
8324 (_("%P: %H: error: %s with unexpected instruction %x\n"),
8325 input_bfd, input_section, rel->r_offset,
8326 "R_PPC_ADDR16_LO", insn);
8327 }
8328 }
8329
8330 ifunc = NULL;
8331 if (!htab->is_vxworks)
8332 {
8333 struct plt_entry *ent;
8334
8335 if (h != NULL)
8336 {
8337 if (h->type == STT_GNU_IFUNC)
8338 ifunc = &h->plt.plist;
8339 }
8340 else if (local_got_offsets != NULL
8341 && ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
8342 {
8343 struct plt_entry **local_plt;
8344
8345 local_plt = (struct plt_entry **) (local_got_offsets
8346 + symtab_hdr->sh_info);
8347 ifunc = local_plt + r_symndx;
8348 }
8349
8350 ent = NULL;
8351 if (ifunc != NULL
8352 && (!bfd_link_pic (info)
8353 || is_branch_reloc (r_type)))
8354 {
8355 addend = 0;
8356 if (r_type == R_PPC_PLTREL24 && bfd_link_pic (info))
8357 addend = rel->r_addend;
8358 ent = find_plt_ent (ifunc, got2, addend);
8359 }
8360 if (ent != NULL)
8361 {
8362 if (bfd_link_pic (info)
8363 && ent->sec != got2
8364 && htab->plt_type != PLT_NEW
8365 && (!htab->elf.dynamic_sections_created
8366 || h == NULL
8367 || h->dynindx == -1))
8368 {
8369 /* Uh oh, we are going to create a pic glink stub
8370 for an ifunc (here for h == NULL and later in
8371 finish_dynamic_symbol for h != NULL), and
8372 apparently are using code compiled with
8373 -mbss-plt. The difficulty is that -mbss-plt code
8374 gives no indication via a magic PLTREL24 addend
8375 whether r30 is equal to _GLOBAL_OFFSET_TABLE_ or
8376 is pointing into a .got2 section (and how far
8377 into .got2). */
8378 info->callbacks->einfo
8379 /* xgettext:c-format */
8380 (_("%X%P: %H: unsupported bss-plt -fPIC ifunc %s\n"),
8381 input_bfd, input_section, rel->r_offset, sym_name);
8382 }
8383 if (h == NULL && (ent->plt.offset & 1) == 0)
8384 {
8385 Elf_Internal_Rela rela;
8386 bfd_byte *loc;
8387
8388 rela.r_offset = (htab->elf.iplt->output_section->vma
8389 + htab->elf.iplt->output_offset
8390 + ent->plt.offset);
8391 rela.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
8392 rela.r_addend = relocation;
8393 loc = htab->elf.irelplt->contents;
8394 loc += (htab->elf.irelplt->reloc_count++
8395 * sizeof (Elf32_External_Rela));
8396 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
8397
8398 ent->plt.offset |= 1;
8399 }
8400 if (h == NULL && (ent->glink_offset & 1) == 0)
8401 {
8402 unsigned char *p = ((unsigned char *) htab->glink->contents
8403 + ent->glink_offset);
8404 write_glink_stub (ent, htab->elf.iplt, p, info);
8405 ent->glink_offset |= 1;
8406 }
8407
8408 unresolved_reloc = FALSE;
8409 if (htab->plt_type == PLT_NEW
8410 || !htab->elf.dynamic_sections_created
8411 || h == NULL
8412 || h->dynindx == -1)
8413 relocation = (htab->glink->output_section->vma
8414 + htab->glink->output_offset
8415 + (ent->glink_offset & ~1));
8416 else
8417 relocation = (htab->elf.splt->output_section->vma
8418 + htab->elf.splt->output_offset
8419 + ent->plt.offset);
8420 }
8421 }
8422
8423 addend = rel->r_addend;
8424 tls_type = 0;
8425 howto = NULL;
8426 if (r_type < R_PPC_max)
8427 howto = ppc_elf_howto_table[r_type];
8428 switch (r_type)
8429 {
8430 default:
8431 info->callbacks->einfo
8432 /* xgettext:c-format */
8433 (_("%P: %B: unknown relocation type %d for symbol %s\n"),
8434 input_bfd, (int) r_type, sym_name);
8435
8436 bfd_set_error (bfd_error_bad_value);
8437 ret = FALSE;
8438 goto copy_reloc;
8439
8440 case R_PPC_NONE:
8441 case R_PPC_TLS:
8442 case R_PPC_TLSGD:
8443 case R_PPC_TLSLD:
8444 case R_PPC_EMB_MRKREF:
8445 case R_PPC_GNU_VTINHERIT:
8446 case R_PPC_GNU_VTENTRY:
8447 goto copy_reloc;
8448
8449 /* GOT16 relocations. Like an ADDR16 using the symbol's
8450 address in the GOT as relocation value instead of the
8451 symbol's value itself. Also, create a GOT entry for the
8452 symbol and put the symbol value there. */
8453 case R_PPC_GOT_TLSGD16:
8454 case R_PPC_GOT_TLSGD16_LO:
8455 case R_PPC_GOT_TLSGD16_HI:
8456 case R_PPC_GOT_TLSGD16_HA:
8457 tls_type = TLS_TLS | TLS_GD;
8458 goto dogot;
8459
8460 case R_PPC_GOT_TLSLD16:
8461 case R_PPC_GOT_TLSLD16_LO:
8462 case R_PPC_GOT_TLSLD16_HI:
8463 case R_PPC_GOT_TLSLD16_HA:
8464 tls_type = TLS_TLS | TLS_LD;
8465 goto dogot;
8466
8467 case R_PPC_GOT_TPREL16:
8468 case R_PPC_GOT_TPREL16_LO:
8469 case R_PPC_GOT_TPREL16_HI:
8470 case R_PPC_GOT_TPREL16_HA:
8471 tls_type = TLS_TLS | TLS_TPREL;
8472 goto dogot;
8473
8474 case R_PPC_GOT_DTPREL16:
8475 case R_PPC_GOT_DTPREL16_LO:
8476 case R_PPC_GOT_DTPREL16_HI:
8477 case R_PPC_GOT_DTPREL16_HA:
8478 tls_type = TLS_TLS | TLS_DTPREL;
8479 goto dogot;
8480
8481 case R_PPC_GOT16:
8482 case R_PPC_GOT16_LO:
8483 case R_PPC_GOT16_HI:
8484 case R_PPC_GOT16_HA:
8485 tls_mask = 0;
8486 dogot:
8487 {
8488 /* Relocation is to the entry for this symbol in the global
8489 offset table. */
8490 bfd_vma off;
8491 bfd_vma *offp;
8492 unsigned long indx;
8493
8494 if (htab->elf.sgot == NULL)
8495 abort ();
8496
8497 indx = 0;
8498 if (tls_type == (TLS_TLS | TLS_LD)
8499 && (h == NULL
8500 || !h->def_dynamic))
8501 offp = &htab->tlsld_got.offset;
8502 else if (h != NULL)
8503 {
8504 bfd_boolean dyn;
8505 dyn = htab->elf.dynamic_sections_created;
8506 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, bfd_link_pic (info), h)
8507 || (bfd_link_pic (info)
8508 && SYMBOL_REFERENCES_LOCAL (info, h)))
8509 /* This is actually a static link, or it is a
8510 -Bsymbolic link and the symbol is defined
8511 locally, or the symbol was forced to be local
8512 because of a version file. */
8513 ;
8514 else
8515 {
8516 BFD_ASSERT (h->dynindx != -1);
8517 indx = h->dynindx;
8518 unresolved_reloc = FALSE;
8519 }
8520 offp = &h->got.offset;
8521 }
8522 else
8523 {
8524 if (local_got_offsets == NULL)
8525 abort ();
8526 offp = &local_got_offsets[r_symndx];
8527 }
8528
8529 /* The offset must always be a multiple of 4. We use the
8530 least significant bit to record whether we have already
8531 processed this entry. */
8532 off = *offp;
8533 if ((off & 1) != 0)
8534 off &= ~1;
8535 else
8536 {
8537 unsigned int tls_m = (tls_mask
8538 & (TLS_LD | TLS_GD | TLS_DTPREL
8539 | TLS_TPREL | TLS_TPRELGD));
8540
8541 if (offp == &htab->tlsld_got.offset)
8542 tls_m = TLS_LD;
8543 else if (h == NULL
8544 || !h->def_dynamic)
8545 tls_m &= ~TLS_LD;
8546
8547 /* We might have multiple got entries for this sym.
8548 Initialize them all. */
8549 do
8550 {
8551 int tls_ty = 0;
8552
8553 if ((tls_m & TLS_LD) != 0)
8554 {
8555 tls_ty = TLS_TLS | TLS_LD;
8556 tls_m &= ~TLS_LD;
8557 }
8558 else if ((tls_m & TLS_GD) != 0)
8559 {
8560 tls_ty = TLS_TLS | TLS_GD;
8561 tls_m &= ~TLS_GD;
8562 }
8563 else if ((tls_m & TLS_DTPREL) != 0)
8564 {
8565 tls_ty = TLS_TLS | TLS_DTPREL;
8566 tls_m &= ~TLS_DTPREL;
8567 }
8568 else if ((tls_m & (TLS_TPREL | TLS_TPRELGD)) != 0)
8569 {
8570 tls_ty = TLS_TLS | TLS_TPREL;
8571 tls_m = 0;
8572 }
8573
8574 /* Generate relocs for the dynamic linker. */
8575 if ((bfd_link_pic (info) || indx != 0)
8576 && (offp == &htab->tlsld_got.offset
8577 || h == NULL
8578 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
8579 || h->root.type != bfd_link_hash_undefweak))
8580 {
8581 asection *rsec = htab->elf.srelgot;
8582 bfd_byte * loc;
8583
8584 if (ifunc != NULL)
8585 rsec = htab->elf.irelplt;
8586 outrel.r_offset = (htab->elf.sgot->output_section->vma
8587 + htab->elf.sgot->output_offset
8588 + off);
8589 outrel.r_addend = 0;
8590 if (tls_ty & (TLS_LD | TLS_GD))
8591 {
8592 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPMOD32);
8593 if (tls_ty == (TLS_TLS | TLS_GD))
8594 {
8595 loc = rsec->contents;
8596 loc += (rsec->reloc_count++
8597 * sizeof (Elf32_External_Rela));
8598 bfd_elf32_swap_reloca_out (output_bfd,
8599 &outrel, loc);
8600 outrel.r_offset += 4;
8601 outrel.r_info
8602 = ELF32_R_INFO (indx, R_PPC_DTPREL32);
8603 }
8604 }
8605 else if (tls_ty == (TLS_TLS | TLS_DTPREL))
8606 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPREL32);
8607 else if (tls_ty == (TLS_TLS | TLS_TPREL))
8608 outrel.r_info = ELF32_R_INFO (indx, R_PPC_TPREL32);
8609 else if (indx != 0)
8610 outrel.r_info = ELF32_R_INFO (indx, R_PPC_GLOB_DAT);
8611 else if (ifunc != NULL)
8612 outrel.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
8613 else
8614 outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
8615 if (indx == 0 && tls_ty != (TLS_TLS | TLS_LD))
8616 {
8617 outrel.r_addend += relocation;
8618 if (tls_ty & (TLS_GD | TLS_DTPREL | TLS_TPREL))
8619 {
8620 if (htab->elf.tls_sec == NULL)
8621 outrel.r_addend = 0;
8622 else
8623 outrel.r_addend -= htab->elf.tls_sec->vma;
8624 }
8625 }
8626 loc = rsec->contents;
8627 loc += (rsec->reloc_count++
8628 * sizeof (Elf32_External_Rela));
8629 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
8630 }
8631
8632 /* Init the .got section contents if we're not
8633 emitting a reloc. */
8634 else
8635 {
8636 bfd_vma value = relocation;
8637
8638 if (tls_ty == (TLS_TLS | TLS_LD))
8639 value = 1;
8640 else if (tls_ty != 0)
8641 {
8642 if (htab->elf.tls_sec == NULL)
8643 value = 0;
8644 else
8645 {
8646 value -= htab->elf.tls_sec->vma + DTP_OFFSET;
8647 if (tls_ty == (TLS_TLS | TLS_TPREL))
8648 value += DTP_OFFSET - TP_OFFSET;
8649 }
8650
8651 if (tls_ty == (TLS_TLS | TLS_GD))
8652 {
8653 bfd_put_32 (input_bfd, value,
8654 htab->elf.sgot->contents + off + 4);
8655 value = 1;
8656 }
8657 }
8658 bfd_put_32 (input_bfd, value,
8659 htab->elf.sgot->contents + off);
8660 }
8661
8662 off += 4;
8663 if (tls_ty & (TLS_LD | TLS_GD))
8664 off += 4;
8665 }
8666 while (tls_m != 0);
8667
8668 off = *offp;
8669 *offp = off | 1;
8670 }
8671
8672 if (off >= (bfd_vma) -2)
8673 abort ();
8674
8675 if ((tls_type & TLS_TLS) != 0)
8676 {
8677 if (tls_type != (TLS_TLS | TLS_LD))
8678 {
8679 if ((tls_mask & TLS_LD) != 0
8680 && !(h == NULL
8681 || !h->def_dynamic))
8682 off += 8;
8683 if (tls_type != (TLS_TLS | TLS_GD))
8684 {
8685 if ((tls_mask & TLS_GD) != 0)
8686 off += 8;
8687 if (tls_type != (TLS_TLS | TLS_DTPREL))
8688 {
8689 if ((tls_mask & TLS_DTPREL) != 0)
8690 off += 4;
8691 }
8692 }
8693 }
8694 }
8695
8696 /* If here for a picfixup, we're done. */
8697 if (r_type != ELF32_R_TYPE (rel->r_info))
8698 goto copy_reloc;
8699
8700 relocation = (htab->elf.sgot->output_section->vma
8701 + htab->elf.sgot->output_offset
8702 + off
8703 - SYM_VAL (htab->elf.hgot));
8704
8705 /* Addends on got relocations don't make much sense.
8706 x+off@got is actually x@got+off, and since the got is
8707 generated by a hash table traversal, the value in the
8708 got at entry m+n bears little relation to the entry m. */
8709 if (addend != 0)
8710 info->callbacks->einfo
8711 /* xgettext:c-format */
8712 (_("%P: %H: non-zero addend on %s reloc against `%s'\n"),
8713 input_bfd, input_section, rel->r_offset,
8714 howto->name,
8715 sym_name);
8716 }
8717 break;
8718
8719 /* Relocations that need no special processing. */
8720 case R_PPC_LOCAL24PC:
8721 /* It makes no sense to point a local relocation
8722 at a symbol not in this object. */
8723 if (unresolved_reloc)
8724 {
8725 (*info->callbacks->undefined_symbol) (info,
8726 h->root.root.string,
8727 input_bfd,
8728 input_section,
8729 rel->r_offset,
8730 TRUE);
8731 goto copy_reloc;
8732 }
8733 if (h != NULL && h->type == STT_GNU_IFUNC && bfd_link_pic (info))
8734 {
8735 /* @local on an ifunc does not really make sense since
8736 the ifunc resolver can take you anywhere. More
8737 seriously, calls to ifuncs must go through a plt call
8738 stub, and for pic the plt call stubs uses r30 to
8739 access the PLT. The problem is that a call that is
8740 local won't have the +32k reloc addend trick marking
8741 -fPIC code, so the linker won't know whether r30 is
8742 _GLOBAL_OFFSET_TABLE_ or pointing into a .got2 section. */
8743 /* xgettext:c-format */
8744 info->callbacks->einfo (_("%X%P: %H: @local call to ifunc %s\n"),
8745 input_bfd, input_section, rel->r_offset,
8746 h->root.root.string);
8747 }
8748 break;
8749
8750 case R_PPC_DTPREL16:
8751 case R_PPC_DTPREL16_LO:
8752 case R_PPC_DTPREL16_HI:
8753 case R_PPC_DTPREL16_HA:
8754 if (htab->elf.tls_sec != NULL)
8755 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
8756 break;
8757
8758 /* Relocations that may need to be propagated if this is a shared
8759 object. */
8760 case R_PPC_TPREL16:
8761 case R_PPC_TPREL16_LO:
8762 case R_PPC_TPREL16_HI:
8763 case R_PPC_TPREL16_HA:
8764 if (h != NULL
8765 && h->root.type == bfd_link_hash_undefweak
8766 && h->dynindx == -1)
8767 {
8768 /* Make this relocation against an undefined weak symbol
8769 resolve to zero. This is really just a tweak, since
8770 code using weak externs ought to check that they are
8771 defined before using them. */
8772 bfd_byte *p = contents + rel->r_offset - d_offset;
8773 unsigned int insn = bfd_get_32 (input_bfd, p);
8774 insn = _bfd_elf_ppc_at_tprel_transform (insn, 2);
8775 if (insn != 0)
8776 bfd_put_32 (input_bfd, insn, p);
8777 break;
8778 }
8779 if (htab->elf.tls_sec != NULL)
8780 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
8781 /* The TPREL16 relocs shouldn't really be used in shared
8782 libs as they will result in DT_TEXTREL being set, but
8783 support them anyway. */
8784 goto dodyn;
8785
8786 case R_PPC_TPREL32:
8787 if (htab->elf.tls_sec != NULL)
8788 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
8789 goto dodyn;
8790
8791 case R_PPC_DTPREL32:
8792 if (htab->elf.tls_sec != NULL)
8793 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
8794 goto dodyn;
8795
8796 case R_PPC_DTPMOD32:
8797 relocation = 1;
8798 addend = 0;
8799 goto dodyn;
8800
8801 case R_PPC_REL16:
8802 case R_PPC_REL16_LO:
8803 case R_PPC_REL16_HI:
8804 case R_PPC_REL16_HA:
8805 case R_PPC_REL16DX_HA:
8806 break;
8807
8808 case R_PPC_REL32:
8809 if (h == NULL || h == htab->elf.hgot)
8810 break;
8811 /* fall through */
8812
8813 case R_PPC_ADDR32:
8814 case R_PPC_ADDR16:
8815 case R_PPC_ADDR16_LO:
8816 case R_PPC_ADDR16_HI:
8817 case R_PPC_ADDR16_HA:
8818 case R_PPC_UADDR32:
8819 case R_PPC_UADDR16:
8820 goto dodyn;
8821
8822 case R_PPC_VLE_REL8:
8823 case R_PPC_VLE_REL15:
8824 case R_PPC_VLE_REL24:
8825 case R_PPC_REL24:
8826 case R_PPC_REL14:
8827 case R_PPC_REL14_BRTAKEN:
8828 case R_PPC_REL14_BRNTAKEN:
8829 /* If these relocations are not to a named symbol, they can be
8830 handled right here, no need to bother the dynamic linker. */
8831 if (SYMBOL_CALLS_LOCAL (info, h)
8832 || h == htab->elf.hgot)
8833 break;
8834 /* fall through */
8835
8836 case R_PPC_ADDR24:
8837 case R_PPC_ADDR14:
8838 case R_PPC_ADDR14_BRTAKEN:
8839 case R_PPC_ADDR14_BRNTAKEN:
8840 if (h != NULL && !bfd_link_pic (info))
8841 break;
8842 /* fall through */
8843
8844 dodyn:
8845 if ((input_section->flags & SEC_ALLOC) == 0
8846 || is_vxworks_tls)
8847 break;
8848
8849 if ((bfd_link_pic (info)
8850 && !(h != NULL
8851 && ((h->root.type == bfd_link_hash_undefined
8852 && (ELF_ST_VISIBILITY (h->other) == STV_HIDDEN
8853 || ELF_ST_VISIBILITY (h->other) == STV_INTERNAL))
8854 || (h->root.type == bfd_link_hash_undefweak
8855 && ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)))
8856 && (must_be_dyn_reloc (info, r_type)
8857 || !SYMBOL_CALLS_LOCAL (info, h)))
8858 || (ELIMINATE_COPY_RELOCS
8859 && !bfd_link_pic (info)
8860 && h != NULL
8861 && h->dynindx != -1
8862 && !h->non_got_ref
8863 && !h->def_regular
8864 && !(h->protected_def
8865 && ppc_elf_hash_entry (h)->has_addr16_ha
8866 && ppc_elf_hash_entry (h)->has_addr16_lo
8867 && htab->params->pic_fixup > 0)))
8868 {
8869 int skip;
8870 bfd_byte *loc;
8871 asection *sreloc;
8872 #ifdef DEBUG
8873 fprintf (stderr, "ppc_elf_relocate_section needs to "
8874 "create relocation for %s\n",
8875 (h && h->root.root.string
8876 ? h->root.root.string : "<unknown>"));
8877 #endif
8878
8879 /* When generating a shared object, these relocations
8880 are copied into the output file to be resolved at run
8881 time. */
8882 sreloc = elf_section_data (input_section)->sreloc;
8883 if (ifunc)
8884 sreloc = htab->elf.irelplt;
8885 if (sreloc == NULL)
8886 return FALSE;
8887
8888 skip = 0;
8889 outrel.r_offset = _bfd_elf_section_offset (output_bfd, info,
8890 input_section,
8891 rel->r_offset);
8892 if (outrel.r_offset == (bfd_vma) -1
8893 || outrel.r_offset == (bfd_vma) -2)
8894 skip = (int) outrel.r_offset;
8895 outrel.r_offset += (input_section->output_section->vma
8896 + input_section->output_offset);
8897
8898 if (skip)
8899 memset (&outrel, 0, sizeof outrel);
8900 else if ((h != NULL
8901 && (h->root.type == bfd_link_hash_undefined
8902 || h->root.type == bfd_link_hash_undefweak))
8903 || !SYMBOL_REFERENCES_LOCAL (info, h))
8904 {
8905 BFD_ASSERT (h->dynindx != -1);
8906 unresolved_reloc = FALSE;
8907 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
8908 outrel.r_addend = rel->r_addend;
8909 }
8910 else
8911 {
8912 outrel.r_addend = relocation + rel->r_addend;
8913
8914 if (r_type != R_PPC_ADDR32)
8915 {
8916 long indx = 0;
8917
8918 if (ifunc != NULL)
8919 {
8920 /* If we get here when building a static
8921 executable, then the libc startup function
8922 responsible for applying indirect function
8923 relocations is going to complain about
8924 the reloc type.
8925 If we get here when building a dynamic
8926 executable, it will be because we have
8927 a text relocation. The dynamic loader
8928 will set the text segment writable and
8929 non-executable to apply text relocations.
8930 So we'll segfault when trying to run the
8931 indirection function to resolve the reloc. */
8932 info->callbacks->einfo
8933 /* xgettext:c-format */
8934 (_("%P: %H: relocation %s for indirect "
8935 "function %s unsupported\n"),
8936 input_bfd, input_section, rel->r_offset,
8937 howto->name,
8938 sym_name);
8939 ret = FALSE;
8940 }
8941 else if (r_symndx == STN_UNDEF || bfd_is_abs_section (sec))
8942 ;
8943 else if (sec == NULL || sec->owner == NULL)
8944 {
8945 bfd_set_error (bfd_error_bad_value);
8946 ret = FALSE;
8947 }
8948 else
8949 {
8950 asection *osec;
8951
8952 /* We are turning this relocation into one
8953 against a section symbol. It would be
8954 proper to subtract the symbol's value,
8955 osec->vma, from the emitted reloc addend,
8956 but ld.so expects buggy relocs.
8957 FIXME: Why not always use a zero index? */
8958 osec = sec->output_section;
8959 indx = elf_section_data (osec)->dynindx;
8960 if (indx == 0)
8961 {
8962 osec = htab->elf.text_index_section;
8963 indx = elf_section_data (osec)->dynindx;
8964 }
8965 BFD_ASSERT (indx != 0);
8966 #ifdef DEBUG
8967 if (indx == 0)
8968 printf ("indx=%ld section=%s flags=%08x name=%s\n",
8969 indx, osec->name, osec->flags,
8970 h->root.root.string);
8971 #endif
8972 }
8973
8974 outrel.r_info = ELF32_R_INFO (indx, r_type);
8975 }
8976 else if (ifunc != NULL)
8977 outrel.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
8978 else
8979 outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
8980 }
8981
8982 loc = sreloc->contents;
8983 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
8984 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
8985
8986 if (skip == -1)
8987 goto copy_reloc;
8988
8989 /* This reloc will be computed at runtime. We clear the memory
8990 so that it contains predictable value. */
8991 if (! skip
8992 && ((input_section->flags & SEC_ALLOC) != 0
8993 || ELF32_R_TYPE (outrel.r_info) != R_PPC_RELATIVE))
8994 {
8995 relocation = howto->pc_relative ? outrel.r_offset : 0;
8996 addend = 0;
8997 break;
8998 }
8999 }
9000 break;
9001
9002 case R_PPC_RELAX_PLT:
9003 case R_PPC_RELAX_PLTREL24:
9004 if (h != NULL)
9005 {
9006 struct plt_entry *ent;
9007 bfd_vma got2_addend = 0;
9008
9009 if (r_type == R_PPC_RELAX_PLTREL24)
9010 {
9011 if (bfd_link_pic (info))
9012 got2_addend = addend;
9013 addend = 0;
9014 }
9015 ent = find_plt_ent (&h->plt.plist, got2, got2_addend);
9016 if (htab->plt_type == PLT_NEW)
9017 relocation = (htab->glink->output_section->vma
9018 + htab->glink->output_offset
9019 + ent->glink_offset);
9020 else
9021 relocation = (htab->elf.splt->output_section->vma
9022 + htab->elf.splt->output_offset
9023 + ent->plt.offset);
9024 }
9025 /* Fall through. */
9026
9027 case R_PPC_RELAX:
9028 {
9029 const int *stub;
9030 size_t size;
9031 size_t insn_offset = rel->r_offset;
9032 unsigned int insn;
9033
9034 if (bfd_link_pic (info))
9035 {
9036 relocation -= (input_section->output_section->vma
9037 + input_section->output_offset
9038 + rel->r_offset - 4);
9039 stub = shared_stub_entry;
9040 bfd_put_32 (input_bfd, stub[0], contents + insn_offset - 12);
9041 bfd_put_32 (input_bfd, stub[1], contents + insn_offset - 8);
9042 bfd_put_32 (input_bfd, stub[2], contents + insn_offset - 4);
9043 stub += 3;
9044 size = ARRAY_SIZE (shared_stub_entry) - 3;
9045 }
9046 else
9047 {
9048 stub = stub_entry;
9049 size = ARRAY_SIZE (stub_entry);
9050 }
9051
9052 relocation += addend;
9053 if (bfd_link_relocatable (info))
9054 relocation = 0;
9055
9056 /* First insn is HA, second is LO. */
9057 insn = *stub++;
9058 insn |= ((relocation + 0x8000) >> 16) & 0xffff;
9059 bfd_put_32 (input_bfd, insn, contents + insn_offset);
9060 insn_offset += 4;
9061
9062 insn = *stub++;
9063 insn |= relocation & 0xffff;
9064 bfd_put_32 (input_bfd, insn, contents + insn_offset);
9065 insn_offset += 4;
9066 size -= 2;
9067
9068 while (size != 0)
9069 {
9070 insn = *stub++;
9071 --size;
9072 bfd_put_32 (input_bfd, insn, contents + insn_offset);
9073 insn_offset += 4;
9074 }
9075
9076 /* Rewrite the reloc and convert one of the trailing nop
9077 relocs to describe this relocation. */
9078 BFD_ASSERT (ELF32_R_TYPE (relend[-1].r_info) == R_PPC_NONE);
9079 /* The relocs are at the bottom 2 bytes */
9080 wrel->r_offset = rel->r_offset + d_offset;
9081 wrel->r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_HA);
9082 wrel->r_addend = rel->r_addend;
9083 memmove (wrel + 1, wrel, (relend - wrel - 1) * sizeof (*wrel));
9084 wrel++, rel++;
9085 wrel->r_offset += 4;
9086 wrel->r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_LO);
9087 }
9088 continue;
9089
9090 /* Indirect .sdata relocation. */
9091 case R_PPC_EMB_SDAI16:
9092 BFD_ASSERT (htab->sdata[0].section != NULL);
9093 if (!is_static_defined (htab->sdata[0].sym))
9094 {
9095 unresolved_reloc = TRUE;
9096 break;
9097 }
9098 relocation
9099 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[0],
9100 h, relocation, rel);
9101 addend = 0;
9102 break;
9103
9104 /* Indirect .sdata2 relocation. */
9105 case R_PPC_EMB_SDA2I16:
9106 BFD_ASSERT (htab->sdata[1].section != NULL);
9107 if (!is_static_defined (htab->sdata[1].sym))
9108 {
9109 unresolved_reloc = TRUE;
9110 break;
9111 }
9112 relocation
9113 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[1],
9114 h, relocation, rel);
9115 addend = 0;
9116 break;
9117
9118 /* Handle the TOC16 reloc. We want to use the offset within the .got
9119 section, not the actual VMA. This is appropriate when generating
9120 an embedded ELF object, for which the .got section acts like the
9121 AIX .toc section. */
9122 case R_PPC_TOC16: /* phony GOT16 relocations */
9123 if (sec == NULL || sec->output_section == NULL)
9124 {
9125 unresolved_reloc = TRUE;
9126 break;
9127 }
9128 BFD_ASSERT (strcmp (bfd_get_section_name (sec->owner, sec),
9129 ".got") == 0
9130 || strcmp (bfd_get_section_name (sec->owner, sec),
9131 ".cgot") == 0);
9132
9133 addend -= sec->output_section->vma + sec->output_offset + 0x8000;
9134 break;
9135
9136 case R_PPC_PLTREL24:
9137 if (h != NULL && ifunc == NULL)
9138 {
9139 struct plt_entry *ent;
9140
9141 ent = find_plt_ent (&h->plt.plist, got2,
9142 bfd_link_pic (info) ? addend : 0);
9143 if (ent == NULL
9144 || htab->elf.splt == NULL)
9145 {
9146 /* We didn't make a PLT entry for this symbol. This
9147 happens when statically linking PIC code, or when
9148 using -Bsymbolic. */
9149 }
9150 else
9151 {
9152 /* Relocation is to the entry for this symbol in the
9153 procedure linkage table. */
9154 unresolved_reloc = FALSE;
9155 if (htab->plt_type == PLT_NEW)
9156 relocation = (htab->glink->output_section->vma
9157 + htab->glink->output_offset
9158 + ent->glink_offset);
9159 else
9160 relocation = (htab->elf.splt->output_section->vma
9161 + htab->elf.splt->output_offset
9162 + ent->plt.offset);
9163 }
9164 }
9165
9166 /* R_PPC_PLTREL24 is rather special. If non-zero, the
9167 addend specifies the GOT pointer offset within .got2.
9168 Don't apply it to the relocation field. */
9169 addend = 0;
9170 break;
9171
9172 /* Relocate against _SDA_BASE_. */
9173 case R_PPC_SDAREL16:
9174 {
9175 const char *name;
9176 struct elf_link_hash_entry *sda = htab->sdata[0].sym;
9177
9178 if (sec == NULL
9179 || sec->output_section == NULL
9180 || !is_static_defined (sda))
9181 {
9182 unresolved_reloc = TRUE;
9183 break;
9184 }
9185 addend -= SYM_VAL (sda);
9186
9187 name = bfd_get_section_name (output_bfd, sec->output_section);
9188 if (!(strcmp (name, ".sdata") == 0
9189 || strcmp (name, ".sbss") == 0))
9190 {
9191 info->callbacks->einfo
9192 /* xgettext:c-format */
9193 (_("%P: %B: the target (%s) of a %s relocation is "
9194 "in the wrong output section (%s)\n"),
9195 input_bfd,
9196 sym_name,
9197 howto->name,
9198 name);
9199 }
9200 }
9201 break;
9202
9203 /* Relocate against _SDA2_BASE_. */
9204 case R_PPC_EMB_SDA2REL:
9205 {
9206 const char *name;
9207 struct elf_link_hash_entry *sda = htab->sdata[1].sym;
9208
9209 if (sec == NULL
9210 || sec->output_section == NULL
9211 || !is_static_defined (sda))
9212 {
9213 unresolved_reloc = TRUE;
9214 break;
9215 }
9216 addend -= SYM_VAL (sda);
9217
9218 name = bfd_get_section_name (output_bfd, sec->output_section);
9219 if (!(strcmp (name, ".sdata2") == 0
9220 || strcmp (name, ".sbss2") == 0))
9221 {
9222 info->callbacks->einfo
9223 /* xgettext:c-format */
9224 (_("%P: %B: the target (%s) of a %s relocation is "
9225 "in the wrong output section (%s)\n"),
9226 input_bfd,
9227 sym_name,
9228 howto->name,
9229 name);
9230 }
9231 }
9232 break;
9233
9234 case R_PPC_VLE_LO16A:
9235 relocation = relocation + addend;
9236 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9237 contents + rel->r_offset, relocation,
9238 split16a_type, htab->params->vle_reloc_fixup);
9239 goto copy_reloc;
9240
9241 case R_PPC_VLE_LO16D:
9242 relocation = relocation + addend;
9243 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9244 contents + rel->r_offset, relocation,
9245 split16d_type, htab->params->vle_reloc_fixup);
9246 goto copy_reloc;
9247
9248 case R_PPC_VLE_HI16A:
9249 relocation = (relocation + addend) >> 16;
9250 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9251 contents + rel->r_offset, relocation,
9252 split16a_type, htab->params->vle_reloc_fixup);
9253 goto copy_reloc;
9254
9255 case R_PPC_VLE_HI16D:
9256 relocation = (relocation + addend) >> 16;
9257 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9258 contents + rel->r_offset, relocation,
9259 split16d_type, htab->params->vle_reloc_fixup);
9260 goto copy_reloc;
9261
9262 case R_PPC_VLE_HA16A:
9263 relocation = (relocation + addend + 0x8000) >> 16;
9264 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9265 contents + rel->r_offset, relocation,
9266 split16a_type, htab->params->vle_reloc_fixup);
9267 goto copy_reloc;
9268
9269 case R_PPC_VLE_HA16D:
9270 relocation = (relocation + addend + 0x8000) >> 16;
9271 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9272 contents + rel->r_offset, relocation,
9273 split16d_type, htab->params->vle_reloc_fixup);
9274 goto copy_reloc;
9275
9276 /* Relocate against either _SDA_BASE_, _SDA2_BASE_, or 0. */
9277 case R_PPC_EMB_SDA21:
9278 case R_PPC_VLE_SDA21:
9279 case R_PPC_EMB_RELSDA:
9280 case R_PPC_VLE_SDA21_LO:
9281 {
9282 const char *name;
9283 int reg;
9284 unsigned int insn;
9285 struct elf_link_hash_entry *sda = NULL;
9286
9287 if (sec == NULL || sec->output_section == NULL)
9288 {
9289 unresolved_reloc = TRUE;
9290 break;
9291 }
9292
9293 name = bfd_get_section_name (output_bfd, sec->output_section);
9294 if (strcmp (name, ".sdata") == 0
9295 || strcmp (name, ".sbss") == 0)
9296 {
9297 reg = 13;
9298 sda = htab->sdata[0].sym;
9299 }
9300 else if (strcmp (name, ".sdata2") == 0
9301 || strcmp (name, ".sbss2") == 0)
9302 {
9303 reg = 2;
9304 sda = htab->sdata[1].sym;
9305 }
9306 else if (strcmp (name, ".PPC.EMB.sdata0") == 0
9307 || strcmp (name, ".PPC.EMB.sbss0") == 0)
9308 {
9309 reg = 0;
9310 }
9311 else
9312 {
9313 info->callbacks->einfo
9314 /* xgettext:c-format */
9315 (_("%P: %B: the target (%s) of a %s relocation is "
9316 "in the wrong output section (%s)\n"),
9317 input_bfd,
9318 sym_name,
9319 howto->name,
9320 name);
9321
9322 bfd_set_error (bfd_error_bad_value);
9323 ret = FALSE;
9324 goto copy_reloc;
9325 }
9326
9327 if (sda != NULL)
9328 {
9329 if (!is_static_defined (sda))
9330 {
9331 unresolved_reloc = TRUE;
9332 break;
9333 }
9334 addend -= SYM_VAL (sda);
9335 }
9336
9337 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
9338 if (reg == 0
9339 && (r_type == R_PPC_VLE_SDA21
9340 || r_type == R_PPC_VLE_SDA21_LO))
9341 {
9342 relocation = relocation + addend;
9343 addend = 0;
9344
9345 /* Force e_li insn, keeping RT from original insn. */
9346 insn &= 0x1f << 21;
9347 insn |= 28u << 26;
9348
9349 /* We have an li20 field, bits 17..20, 11..15, 21..31. */
9350 /* Top 4 bits of value to 17..20. */
9351 insn |= (relocation & 0xf0000) >> 5;
9352 /* Next 5 bits of the value to 11..15. */
9353 insn |= (relocation & 0xf800) << 5;
9354 /* And the final 11 bits of the value to bits 21 to 31. */
9355 insn |= relocation & 0x7ff;
9356
9357 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
9358
9359 if (r_type == R_PPC_VLE_SDA21
9360 && ((relocation + 0x80000) & 0xffffffff) > 0x100000)
9361 goto overflow;
9362 goto copy_reloc;
9363 }
9364 else if (r_type == R_PPC_EMB_SDA21
9365 || r_type == R_PPC_VLE_SDA21
9366 || r_type == R_PPC_VLE_SDA21_LO)
9367 {
9368 /* Fill in register field. */
9369 insn = (insn & ~RA_REGISTER_MASK) | (reg << RA_REGISTER_SHIFT);
9370 }
9371 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
9372 }
9373 break;
9374
9375 case R_PPC_VLE_SDAREL_LO16A:
9376 case R_PPC_VLE_SDAREL_LO16D:
9377 case R_PPC_VLE_SDAREL_HI16A:
9378 case R_PPC_VLE_SDAREL_HI16D:
9379 case R_PPC_VLE_SDAREL_HA16A:
9380 case R_PPC_VLE_SDAREL_HA16D:
9381 {
9382 bfd_vma value;
9383 const char *name;
9384 //int reg;
9385 struct elf_link_hash_entry *sda = NULL;
9386
9387 if (sec == NULL || sec->output_section == NULL)
9388 {
9389 unresolved_reloc = TRUE;
9390 break;
9391 }
9392
9393 name = bfd_get_section_name (output_bfd, sec->output_section);
9394 if (strcmp (name, ".sdata") == 0
9395 || strcmp (name, ".sbss") == 0)
9396 {
9397 //reg = 13;
9398 sda = htab->sdata[0].sym;
9399 }
9400 else if (strcmp (name, ".sdata2") == 0
9401 || strcmp (name, ".sbss2") == 0)
9402 {
9403 //reg = 2;
9404 sda = htab->sdata[1].sym;
9405 }
9406 else
9407 {
9408 _bfd_error_handler
9409 /* xgettext:c-format */
9410 (_("%B: the target (%s) of a %s relocation is "
9411 "in the wrong output section (%s)"),
9412 input_bfd,
9413 sym_name,
9414 howto->name,
9415 name);
9416
9417 bfd_set_error (bfd_error_bad_value);
9418 ret = FALSE;
9419 goto copy_reloc;
9420 }
9421
9422 if (sda != NULL)
9423 {
9424 if (!is_static_defined (sda))
9425 {
9426 unresolved_reloc = TRUE;
9427 break;
9428 }
9429 }
9430
9431 value = (sda->root.u.def.section->output_section->vma
9432 + sda->root.u.def.section->output_offset
9433 + addend);
9434
9435 if (r_type == R_PPC_VLE_SDAREL_LO16A)
9436 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9437 contents + rel->r_offset, value,
9438 split16a_type,
9439 htab->params->vle_reloc_fixup);
9440 else if (r_type == R_PPC_VLE_SDAREL_LO16D)
9441 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9442 contents + rel->r_offset, value,
9443 split16d_type,
9444 htab->params->vle_reloc_fixup);
9445 else if (r_type == R_PPC_VLE_SDAREL_HI16A)
9446 {
9447 value = value >> 16;
9448 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9449 contents + rel->r_offset, value,
9450 split16a_type,
9451 htab->params->vle_reloc_fixup);
9452 }
9453 else if (r_type == R_PPC_VLE_SDAREL_HI16D)
9454 {
9455 value = value >> 16;
9456 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9457 contents + rel->r_offset, value,
9458 split16d_type,
9459 htab->params->vle_reloc_fixup);
9460 }
9461 else if (r_type == R_PPC_VLE_SDAREL_HA16A)
9462 {
9463 value = (value + 0x8000) >> 16;
9464 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9465 contents + rel->r_offset, value,
9466 split16a_type,
9467 htab->params->vle_reloc_fixup);
9468 }
9469 else if (r_type == R_PPC_VLE_SDAREL_HA16D)
9470 {
9471 value = (value + 0x8000) >> 16;
9472 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9473 contents + rel->r_offset, value,
9474 split16d_type,
9475 htab->params->vle_reloc_fixup);
9476 }
9477 }
9478 goto copy_reloc;
9479
9480 /* Relocate against the beginning of the section. */
9481 case R_PPC_SECTOFF:
9482 case R_PPC_SECTOFF_LO:
9483 case R_PPC_SECTOFF_HI:
9484 case R_PPC_SECTOFF_HA:
9485 if (sec == NULL || sec->output_section == NULL)
9486 {
9487 unresolved_reloc = TRUE;
9488 break;
9489 }
9490 addend -= sec->output_section->vma;
9491 break;
9492
9493 /* Negative relocations. */
9494 case R_PPC_EMB_NADDR32:
9495 case R_PPC_EMB_NADDR16:
9496 case R_PPC_EMB_NADDR16_LO:
9497 case R_PPC_EMB_NADDR16_HI:
9498 case R_PPC_EMB_NADDR16_HA:
9499 addend -= 2 * relocation;
9500 break;
9501
9502 case R_PPC_COPY:
9503 case R_PPC_GLOB_DAT:
9504 case R_PPC_JMP_SLOT:
9505 case R_PPC_RELATIVE:
9506 case R_PPC_IRELATIVE:
9507 case R_PPC_PLT32:
9508 case R_PPC_PLTREL32:
9509 case R_PPC_PLT16_LO:
9510 case R_PPC_PLT16_HI:
9511 case R_PPC_PLT16_HA:
9512 case R_PPC_ADDR30:
9513 case R_PPC_EMB_RELSEC16:
9514 case R_PPC_EMB_RELST_LO:
9515 case R_PPC_EMB_RELST_HI:
9516 case R_PPC_EMB_RELST_HA:
9517 case R_PPC_EMB_BIT_FLD:
9518 info->callbacks->einfo
9519 /* xgettext:c-format */
9520 (_("%P: %B: relocation %s is not yet supported for symbol %s\n"),
9521 input_bfd,
9522 howto->name,
9523 sym_name);
9524
9525 bfd_set_error (bfd_error_invalid_operation);
9526 ret = FALSE;
9527 goto copy_reloc;
9528 }
9529
9530 /* Do any further special processing. */
9531 switch (r_type)
9532 {
9533 default:
9534 break;
9535
9536 case R_PPC_ADDR16_HA:
9537 case R_PPC_REL16_HA:
9538 case R_PPC_REL16DX_HA:
9539 case R_PPC_SECTOFF_HA:
9540 case R_PPC_TPREL16_HA:
9541 case R_PPC_DTPREL16_HA:
9542 case R_PPC_EMB_NADDR16_HA:
9543 case R_PPC_EMB_RELST_HA:
9544 /* It's just possible that this symbol is a weak symbol
9545 that's not actually defined anywhere. In that case,
9546 'sec' would be NULL, and we should leave the symbol
9547 alone (it will be set to zero elsewhere in the link). */
9548 if (sec == NULL)
9549 break;
9550 /* Fall through. */
9551
9552 case R_PPC_PLT16_HA:
9553 case R_PPC_GOT16_HA:
9554 case R_PPC_GOT_TLSGD16_HA:
9555 case R_PPC_GOT_TLSLD16_HA:
9556 case R_PPC_GOT_TPREL16_HA:
9557 case R_PPC_GOT_DTPREL16_HA:
9558 /* Add 0x10000 if sign bit in 0:15 is set.
9559 Bits 0:15 are not used. */
9560 addend += 0x8000;
9561 break;
9562
9563 case R_PPC_ADDR16:
9564 case R_PPC_ADDR16_LO:
9565 case R_PPC_GOT16:
9566 case R_PPC_GOT16_LO:
9567 case R_PPC_SDAREL16:
9568 case R_PPC_SECTOFF:
9569 case R_PPC_SECTOFF_LO:
9570 case R_PPC_DTPREL16:
9571 case R_PPC_DTPREL16_LO:
9572 case R_PPC_TPREL16:
9573 case R_PPC_TPREL16_LO:
9574 case R_PPC_GOT_TLSGD16:
9575 case R_PPC_GOT_TLSGD16_LO:
9576 case R_PPC_GOT_TLSLD16:
9577 case R_PPC_GOT_TLSLD16_LO:
9578 case R_PPC_GOT_DTPREL16:
9579 case R_PPC_GOT_DTPREL16_LO:
9580 case R_PPC_GOT_TPREL16:
9581 case R_PPC_GOT_TPREL16_LO:
9582 {
9583 /* The 32-bit ABI lacks proper relocations to deal with
9584 certain 64-bit instructions. Prevent damage to bits
9585 that make up part of the insn opcode. */
9586 unsigned int insn, mask, lobit;
9587
9588 insn = bfd_get_32 (input_bfd,
9589 contents + rel->r_offset - d_offset);
9590 mask = 0;
9591 if (is_insn_ds_form (insn))
9592 mask = 3;
9593 else if (is_insn_dq_form (insn))
9594 mask = 15;
9595 else
9596 break;
9597 relocation += addend;
9598 addend = insn & mask;
9599 lobit = mask & relocation;
9600 if (lobit != 0)
9601 {
9602 relocation ^= lobit;
9603 info->callbacks->einfo
9604 /* xgettext:c-format */
9605 (_("%P: %H: error: %s against `%s' not a multiple of %u\n"),
9606 input_bfd, input_section, rel->r_offset,
9607 howto->name, sym_name, mask + 1);
9608 bfd_set_error (bfd_error_bad_value);
9609 ret = FALSE;
9610 }
9611 }
9612 break;
9613 }
9614
9615 #ifdef DEBUG
9616 fprintf (stderr, "\ttype = %s (%d), name = %s, symbol index = %ld, "
9617 "offset = %ld, addend = %ld\n",
9618 howto->name,
9619 (int) r_type,
9620 sym_name,
9621 r_symndx,
9622 (long) rel->r_offset,
9623 (long) addend);
9624 #endif
9625
9626 if (unresolved_reloc
9627 && !((input_section->flags & SEC_DEBUGGING) != 0
9628 && h->def_dynamic)
9629 && _bfd_elf_section_offset (output_bfd, info, input_section,
9630 rel->r_offset) != (bfd_vma) -1)
9631 {
9632 info->callbacks->einfo
9633 /* xgettext:c-format */
9634 (_("%P: %H: unresolvable %s relocation against symbol `%s'\n"),
9635 input_bfd, input_section, rel->r_offset,
9636 howto->name,
9637 sym_name);
9638 ret = FALSE;
9639 }
9640
9641 /* 16-bit fields in insns mostly have signed values, but a
9642 few insns have 16-bit unsigned values. Really, we should
9643 have different reloc types. */
9644 if (howto->complain_on_overflow != complain_overflow_dont
9645 && howto->dst_mask == 0xffff
9646 && (input_section->flags & SEC_CODE) != 0)
9647 {
9648 enum complain_overflow complain = complain_overflow_signed;
9649
9650 if ((elf_section_flags (input_section) & SHF_PPC_VLE) == 0)
9651 {
9652 unsigned int insn;
9653
9654 insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
9655 if ((insn & (0x3f << 26)) == 10u << 26 /* cmpli */)
9656 complain = complain_overflow_bitfield;
9657 else if ((insn & (0x3f << 26)) == 28u << 26 /* andi */
9658 || (insn & (0x3f << 26)) == 24u << 26 /* ori */
9659 || (insn & (0x3f << 26)) == 26u << 26 /* xori */)
9660 complain = complain_overflow_unsigned;
9661 }
9662 if (howto->complain_on_overflow != complain)
9663 {
9664 alt_howto = *howto;
9665 alt_howto.complain_on_overflow = complain;
9666 howto = &alt_howto;
9667 }
9668 }
9669
9670 if (r_type == R_PPC_REL16DX_HA)
9671 {
9672 /* Split field reloc isn't handled by _bfd_final_link_relocate. */
9673 if (rel->r_offset + 4 > input_section->size)
9674 r = bfd_reloc_outofrange;
9675 else
9676 {
9677 unsigned int insn;
9678
9679 relocation += addend;
9680 relocation -= (rel->r_offset
9681 + input_section->output_offset
9682 + input_section->output_section->vma);
9683 relocation >>= 16;
9684 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
9685 insn &= ~0x1fffc1;
9686 insn |= (relocation & 0xffc1) | ((relocation & 0x3e) << 15);
9687 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
9688 r = bfd_reloc_ok;
9689 }
9690 }
9691 else
9692 r = _bfd_final_link_relocate (howto, input_bfd, input_section, contents,
9693 rel->r_offset, relocation, addend);
9694
9695 if (r != bfd_reloc_ok)
9696 {
9697 if (r == bfd_reloc_overflow)
9698 {
9699 overflow:
9700 /* On code like "if (foo) foo();" don't report overflow
9701 on a branch to zero when foo is undefined. */
9702 if (!warned
9703 && !(h != NULL
9704 && (h->root.type == bfd_link_hash_undefweak
9705 || h->root.type == bfd_link_hash_undefined)
9706 && is_branch_reloc (r_type)))
9707 info->callbacks->reloc_overflow
9708 (info, (h ? &h->root : NULL), sym_name, howto->name,
9709 rel->r_addend, input_bfd, input_section, rel->r_offset);
9710 }
9711 else
9712 {
9713 info->callbacks->einfo
9714 /* xgettext:c-format */
9715 (_("%P: %H: %s reloc against `%s': error %d\n"),
9716 input_bfd, input_section, rel->r_offset,
9717 howto->name, sym_name, (int) r);
9718 ret = FALSE;
9719 }
9720 }
9721 copy_reloc:
9722 if (wrel != rel)
9723 *wrel = *rel;
9724 }
9725
9726 if (wrel != rel)
9727 {
9728 Elf_Internal_Shdr *rel_hdr;
9729 size_t deleted = rel - wrel;
9730
9731 rel_hdr = _bfd_elf_single_rel_hdr (input_section->output_section);
9732 rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted;
9733 if (rel_hdr->sh_size == 0)
9734 {
9735 /* It is too late to remove an empty reloc section. Leave
9736 one NONE reloc.
9737 ??? What is wrong with an empty section??? */
9738 rel_hdr->sh_size = rel_hdr->sh_entsize;
9739 deleted -= 1;
9740 wrel++;
9741 }
9742 relend = wrel;
9743 rel_hdr = _bfd_elf_single_rel_hdr (input_section);
9744 rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted;
9745 input_section->reloc_count -= deleted;
9746 }
9747
9748 #ifdef DEBUG
9749 fprintf (stderr, "\n");
9750 #endif
9751
9752 if (input_section->sec_info_type == SEC_INFO_TYPE_TARGET
9753 && input_section->size != input_section->rawsize
9754 && (strcmp (input_section->output_section->name, ".init") == 0
9755 || strcmp (input_section->output_section->name, ".fini") == 0))
9756 {
9757 /* Branch around the trampolines. */
9758 unsigned int insn = B + input_section->size - input_section->rawsize;
9759 bfd_put_32 (input_bfd, insn, contents + input_section->rawsize);
9760 }
9761
9762 if (htab->params->ppc476_workaround
9763 && input_section->sec_info_type == SEC_INFO_TYPE_TARGET
9764 && (!bfd_link_relocatable (info)
9765 || (input_section->output_section->alignment_power
9766 >= htab->params->pagesize_p2)))
9767 {
9768 bfd_vma start_addr, end_addr, addr;
9769 bfd_vma pagesize = (bfd_vma) 1 << htab->params->pagesize_p2;
9770
9771 if (relax_info->workaround_size != 0)
9772 {
9773 bfd_byte *p;
9774 unsigned int n;
9775 bfd_byte fill[4];
9776
9777 bfd_put_32 (input_bfd, BA, fill);
9778 p = contents + input_section->size - relax_info->workaround_size;
9779 n = relax_info->workaround_size >> 2;
9780 while (n--)
9781 {
9782 memcpy (p, fill, 4);
9783 p += 4;
9784 }
9785 }
9786
9787 /* The idea is: Replace the last instruction on a page with a
9788 branch to a patch area. Put the insn there followed by a
9789 branch back to the next page. Complicated a little by
9790 needing to handle moved conditional branches, and by not
9791 wanting to touch data-in-text. */
9792
9793 start_addr = (input_section->output_section->vma
9794 + input_section->output_offset);
9795 end_addr = (start_addr + input_section->size
9796 - relax_info->workaround_size);
9797 for (addr = ((start_addr & -pagesize) + pagesize - 4);
9798 addr < end_addr;
9799 addr += pagesize)
9800 {
9801 bfd_vma offset = addr - start_addr;
9802 Elf_Internal_Rela *lo, *hi;
9803 bfd_boolean is_data;
9804 bfd_vma patch_off, patch_addr;
9805 unsigned int insn;
9806
9807 /* Do we have a data reloc at this offset? If so, leave
9808 the word alone. */
9809 is_data = FALSE;
9810 lo = relocs;
9811 hi = relend;
9812 rel = NULL;
9813 while (lo < hi)
9814 {
9815 rel = lo + (hi - lo) / 2;
9816 if (rel->r_offset < offset)
9817 lo = rel + 1;
9818 else if (rel->r_offset > offset + 3)
9819 hi = rel;
9820 else
9821 {
9822 switch (ELF32_R_TYPE (rel->r_info))
9823 {
9824 case R_PPC_ADDR32:
9825 case R_PPC_UADDR32:
9826 case R_PPC_REL32:
9827 case R_PPC_ADDR30:
9828 is_data = TRUE;
9829 break;
9830 default:
9831 break;
9832 }
9833 break;
9834 }
9835 }
9836 if (is_data)
9837 continue;
9838
9839 /* Some instructions can be left alone too. Unconditional
9840 branches, except for bcctr with BO=0x14 (bctr, bctrl),
9841 avoid the icache failure.
9842
9843 The problem occurs due to prefetch across a page boundary
9844 where stale instructions can be fetched from the next
9845 page, and the mechanism for flushing these bad
9846 instructions fails under certain circumstances. The
9847 unconditional branches:
9848 1) Branch: b, bl, ba, bla,
9849 2) Branch Conditional: bc, bca, bcl, bcla,
9850 3) Branch Conditional to Link Register: bclr, bclrl,
9851 where (2) and (3) have BO=0x14 making them unconditional,
9852 prevent the bad prefetch because the prefetch itself is
9853 affected by these instructions. This happens even if the
9854 instruction is not executed.
9855
9856 A bctr example:
9857 .
9858 . lis 9,new_page@ha
9859 . addi 9,9,new_page@l
9860 . mtctr 9
9861 . bctr
9862 . nop
9863 . nop
9864 . new_page:
9865 .
9866 The bctr is not predicted taken due to ctr not being
9867 ready, so prefetch continues on past the bctr into the
9868 new page which might have stale instructions. If they
9869 fail to be flushed, then they will be executed after the
9870 bctr executes. Either of the following modifications
9871 prevent the bad prefetch from happening in the first
9872 place:
9873 .
9874 . lis 9,new_page@ha lis 9,new_page@ha
9875 . addi 9,9,new_page@l addi 9,9,new_page@l
9876 . mtctr 9 mtctr 9
9877 . bctr bctr
9878 . nop b somewhere_else
9879 . b somewhere_else nop
9880 . new_page: new_page:
9881 . */
9882 insn = bfd_get_32 (input_bfd, contents + offset);
9883 if ((insn & (0x3f << 26)) == (18u << 26) /* b,bl,ba,bla */
9884 || ((insn & (0x3f << 26)) == (16u << 26) /* bc,bcl,bca,bcla*/
9885 && (insn & (0x14 << 21)) == (0x14 << 21)) /* with BO=0x14 */
9886 || ((insn & (0x3f << 26)) == (19u << 26)
9887 && (insn & (0x3ff << 1)) == (16u << 1) /* bclr,bclrl */
9888 && (insn & (0x14 << 21)) == (0x14 << 21)))/* with BO=0x14 */
9889 continue;
9890
9891 patch_addr = (start_addr + input_section->size
9892 - relax_info->workaround_size);
9893 patch_addr = (patch_addr + 15) & -16;
9894 patch_off = patch_addr - start_addr;
9895 bfd_put_32 (input_bfd, B + patch_off - offset, contents + offset);
9896
9897 if (rel != NULL
9898 && rel->r_offset >= offset
9899 && rel->r_offset < offset + 4)
9900 {
9901 asection *sreloc;
9902
9903 /* If the insn we are patching had a reloc, adjust the
9904 reloc r_offset so that the reloc applies to the moved
9905 location. This matters for -r and --emit-relocs. */
9906 if (rel + 1 != relend)
9907 {
9908 Elf_Internal_Rela tmp = *rel;
9909
9910 /* Keep the relocs sorted by r_offset. */
9911 memmove (rel, rel + 1, (relend - (rel + 1)) * sizeof (*rel));
9912 relend[-1] = tmp;
9913 }
9914 relend[-1].r_offset += patch_off - offset;
9915
9916 /* Adjust REL16 addends too. */
9917 switch (ELF32_R_TYPE (relend[-1].r_info))
9918 {
9919 case R_PPC_REL16:
9920 case R_PPC_REL16_LO:
9921 case R_PPC_REL16_HI:
9922 case R_PPC_REL16_HA:
9923 relend[-1].r_addend += patch_off - offset;
9924 break;
9925 default:
9926 break;
9927 }
9928
9929 /* If we are building a PIE or shared library with
9930 non-PIC objects, perhaps we had a dynamic reloc too?
9931 If so, the dynamic reloc must move with the insn. */
9932 sreloc = elf_section_data (input_section)->sreloc;
9933 if (sreloc != NULL)
9934 {
9935 Elf32_External_Rela *slo, *shi, *srelend;
9936 bfd_vma soffset;
9937
9938 slo = (Elf32_External_Rela *) sreloc->contents;
9939 shi = srelend = slo + sreloc->reloc_count;
9940 soffset = (offset + input_section->output_section->vma
9941 + input_section->output_offset);
9942 while (slo < shi)
9943 {
9944 Elf32_External_Rela *srel = slo + (shi - slo) / 2;
9945 bfd_elf32_swap_reloca_in (output_bfd, (bfd_byte *) srel,
9946 &outrel);
9947 if (outrel.r_offset < soffset)
9948 slo = srel + 1;
9949 else if (outrel.r_offset > soffset + 3)
9950 shi = srel;
9951 else
9952 {
9953 if (srel + 1 != srelend)
9954 {
9955 memmove (srel, srel + 1,
9956 (srelend - (srel + 1)) * sizeof (*srel));
9957 srel = srelend - 1;
9958 }
9959 outrel.r_offset += patch_off - offset;
9960 bfd_elf32_swap_reloca_out (output_bfd, &outrel,
9961 (bfd_byte *) srel);
9962 break;
9963 }
9964 }
9965 }
9966 }
9967 else
9968 rel = NULL;
9969
9970 if ((insn & (0x3f << 26)) == (16u << 26) /* bc */
9971 && (insn & 2) == 0 /* relative */)
9972 {
9973 bfd_vma delta = ((insn & 0xfffc) ^ 0x8000) - 0x8000;
9974
9975 delta += offset - patch_off;
9976 if (bfd_link_relocatable (info) && rel != NULL)
9977 delta = 0;
9978 if (!bfd_link_relocatable (info) && rel != NULL)
9979 {
9980 enum elf_ppc_reloc_type r_type;
9981
9982 r_type = ELF32_R_TYPE (relend[-1].r_info);
9983 if (r_type == R_PPC_REL14_BRTAKEN)
9984 insn |= BRANCH_PREDICT_BIT;
9985 else if (r_type == R_PPC_REL14_BRNTAKEN)
9986 insn &= ~BRANCH_PREDICT_BIT;
9987 else
9988 BFD_ASSERT (r_type == R_PPC_REL14);
9989
9990 if ((r_type == R_PPC_REL14_BRTAKEN
9991 || r_type == R_PPC_REL14_BRNTAKEN)
9992 && delta + 0x8000 < 0x10000
9993 && (bfd_signed_vma) delta < 0)
9994 insn ^= BRANCH_PREDICT_BIT;
9995 }
9996 if (delta + 0x8000 < 0x10000)
9997 {
9998 bfd_put_32 (input_bfd,
9999 (insn & ~0xfffc) | (delta & 0xfffc),
10000 contents + patch_off);
10001 patch_off += 4;
10002 bfd_put_32 (input_bfd,
10003 B | ((offset + 4 - patch_off) & 0x3fffffc),
10004 contents + patch_off);
10005 patch_off += 4;
10006 }
10007 else
10008 {
10009 if (rel != NULL)
10010 {
10011 unsigned int r_sym = ELF32_R_SYM (relend[-1].r_info);
10012
10013 relend[-1].r_offset += 8;
10014 relend[-1].r_info = ELF32_R_INFO (r_sym, R_PPC_REL24);
10015 }
10016 bfd_put_32 (input_bfd,
10017 (insn & ~0xfffc) | 8,
10018 contents + patch_off);
10019 patch_off += 4;
10020 bfd_put_32 (input_bfd,
10021 B | ((offset + 4 - patch_off) & 0x3fffffc),
10022 contents + patch_off);
10023 patch_off += 4;
10024 bfd_put_32 (input_bfd,
10025 B | ((delta - 8) & 0x3fffffc),
10026 contents + patch_off);
10027 patch_off += 4;
10028 }
10029 }
10030 else
10031 {
10032 bfd_put_32 (input_bfd, insn, contents + patch_off);
10033 patch_off += 4;
10034 bfd_put_32 (input_bfd,
10035 B | ((offset + 4 - patch_off) & 0x3fffffc),
10036 contents + patch_off);
10037 patch_off += 4;
10038 }
10039 BFD_ASSERT (patch_off <= input_section->size);
10040 relax_info->workaround_size = input_section->size - patch_off;
10041 }
10042 }
10043
10044 return ret;
10045 }
10046 \f
10047 /* Finish up dynamic symbol handling. We set the contents of various
10048 dynamic sections here. */
10049
10050 static bfd_boolean
10051 ppc_elf_finish_dynamic_symbol (bfd *output_bfd,
10052 struct bfd_link_info *info,
10053 struct elf_link_hash_entry *h,
10054 Elf_Internal_Sym *sym)
10055 {
10056 struct ppc_elf_link_hash_table *htab;
10057 struct plt_entry *ent;
10058 bfd_boolean doneone;
10059
10060 #ifdef DEBUG
10061 fprintf (stderr, "ppc_elf_finish_dynamic_symbol called for %s",
10062 h->root.root.string);
10063 #endif
10064
10065 htab = ppc_elf_hash_table (info);
10066 BFD_ASSERT (htab->elf.dynobj != NULL);
10067
10068 doneone = FALSE;
10069 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
10070 if (ent->plt.offset != (bfd_vma) -1)
10071 {
10072 if (!doneone)
10073 {
10074 Elf_Internal_Rela rela;
10075 bfd_byte *loc;
10076 bfd_vma reloc_index;
10077
10078 if (htab->plt_type == PLT_NEW
10079 || !htab->elf.dynamic_sections_created
10080 || h->dynindx == -1)
10081 reloc_index = ent->plt.offset / 4;
10082 else
10083 {
10084 reloc_index = ((ent->plt.offset - htab->plt_initial_entry_size)
10085 / htab->plt_slot_size);
10086 if (reloc_index > PLT_NUM_SINGLE_ENTRIES
10087 && htab->plt_type == PLT_OLD)
10088 reloc_index -= (reloc_index - PLT_NUM_SINGLE_ENTRIES) / 2;
10089 }
10090
10091 /* This symbol has an entry in the procedure linkage table.
10092 Set it up. */
10093 if (htab->plt_type == PLT_VXWORKS
10094 && htab->elf.dynamic_sections_created
10095 && h->dynindx != -1)
10096 {
10097 bfd_vma got_offset;
10098 const bfd_vma *plt_entry;
10099
10100 /* The first three entries in .got.plt are reserved. */
10101 got_offset = (reloc_index + 3) * 4;
10102
10103 /* Use the right PLT. */
10104 plt_entry = bfd_link_pic (info) ? ppc_elf_vxworks_pic_plt_entry
10105 : ppc_elf_vxworks_plt_entry;
10106
10107 /* Fill in the .plt on VxWorks. */
10108 if (bfd_link_pic (info))
10109 {
10110 bfd_put_32 (output_bfd,
10111 plt_entry[0] | PPC_HA (got_offset),
10112 htab->elf.splt->contents + ent->plt.offset + 0);
10113 bfd_put_32 (output_bfd,
10114 plt_entry[1] | PPC_LO (got_offset),
10115 htab->elf.splt->contents + ent->plt.offset + 4);
10116 }
10117 else
10118 {
10119 bfd_vma got_loc = got_offset + SYM_VAL (htab->elf.hgot);
10120
10121 bfd_put_32 (output_bfd,
10122 plt_entry[0] | PPC_HA (got_loc),
10123 htab->elf.splt->contents + ent->plt.offset + 0);
10124 bfd_put_32 (output_bfd,
10125 plt_entry[1] | PPC_LO (got_loc),
10126 htab->elf.splt->contents + ent->plt.offset + 4);
10127 }
10128
10129 bfd_put_32 (output_bfd, plt_entry[2],
10130 htab->elf.splt->contents + ent->plt.offset + 8);
10131 bfd_put_32 (output_bfd, plt_entry[3],
10132 htab->elf.splt->contents + ent->plt.offset + 12);
10133
10134 /* This instruction is an immediate load. The value loaded is
10135 the byte offset of the R_PPC_JMP_SLOT relocation from the
10136 start of the .rela.plt section. The value is stored in the
10137 low-order 16 bits of the load instruction. */
10138 /* NOTE: It appears that this is now an index rather than a
10139 prescaled offset. */
10140 bfd_put_32 (output_bfd,
10141 plt_entry[4] | reloc_index,
10142 htab->elf.splt->contents + ent->plt.offset + 16);
10143 /* This instruction is a PC-relative branch whose target is
10144 the start of the PLT section. The address of this branch
10145 instruction is 20 bytes beyond the start of this PLT entry.
10146 The address is encoded in bits 6-29, inclusive. The value
10147 stored is right-shifted by two bits, permitting a 26-bit
10148 offset. */
10149 bfd_put_32 (output_bfd,
10150 (plt_entry[5]
10151 | (-(ent->plt.offset + 20) & 0x03fffffc)),
10152 htab->elf.splt->contents + ent->plt.offset + 20);
10153 bfd_put_32 (output_bfd, plt_entry[6],
10154 htab->elf.splt->contents + ent->plt.offset + 24);
10155 bfd_put_32 (output_bfd, plt_entry[7],
10156 htab->elf.splt->contents + ent->plt.offset + 28);
10157
10158 /* Fill in the GOT entry corresponding to this PLT slot with
10159 the address immediately after the "bctr" instruction
10160 in this PLT entry. */
10161 bfd_put_32 (output_bfd, (htab->elf.splt->output_section->vma
10162 + htab->elf.splt->output_offset
10163 + ent->plt.offset + 16),
10164 htab->elf.sgotplt->contents + got_offset);
10165
10166 if (!bfd_link_pic (info))
10167 {
10168 /* Fill in a couple of entries in .rela.plt.unloaded. */
10169 loc = htab->srelplt2->contents
10170 + ((VXWORKS_PLTRESOLVE_RELOCS + reloc_index
10171 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS)
10172 * sizeof (Elf32_External_Rela));
10173
10174 /* Provide the @ha relocation for the first instruction. */
10175 rela.r_offset = (htab->elf.splt->output_section->vma
10176 + htab->elf.splt->output_offset
10177 + ent->plt.offset + 2);
10178 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
10179 R_PPC_ADDR16_HA);
10180 rela.r_addend = got_offset;
10181 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10182 loc += sizeof (Elf32_External_Rela);
10183
10184 /* Provide the @l relocation for the second instruction. */
10185 rela.r_offset = (htab->elf.splt->output_section->vma
10186 + htab->elf.splt->output_offset
10187 + ent->plt.offset + 6);
10188 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
10189 R_PPC_ADDR16_LO);
10190 rela.r_addend = got_offset;
10191 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10192 loc += sizeof (Elf32_External_Rela);
10193
10194 /* Provide a relocation for the GOT entry corresponding to this
10195 PLT slot. Point it at the middle of the .plt entry. */
10196 rela.r_offset = (htab->elf.sgotplt->output_section->vma
10197 + htab->elf.sgotplt->output_offset
10198 + got_offset);
10199 rela.r_info = ELF32_R_INFO (htab->elf.hplt->indx,
10200 R_PPC_ADDR32);
10201 rela.r_addend = ent->plt.offset + 16;
10202 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10203 }
10204
10205 /* VxWorks uses non-standard semantics for R_PPC_JMP_SLOT.
10206 In particular, the offset for the relocation is not the
10207 address of the PLT entry for this function, as specified
10208 by the ABI. Instead, the offset is set to the address of
10209 the GOT slot for this function. See EABI 4.4.4.1. */
10210 rela.r_offset = (htab->elf.sgotplt->output_section->vma
10211 + htab->elf.sgotplt->output_offset
10212 + got_offset);
10213
10214 }
10215 else
10216 {
10217 asection *splt = htab->elf.splt;
10218 if (!htab->elf.dynamic_sections_created
10219 || h->dynindx == -1)
10220 splt = htab->elf.iplt;
10221
10222 rela.r_offset = (splt->output_section->vma
10223 + splt->output_offset
10224 + ent->plt.offset);
10225 if (htab->plt_type == PLT_OLD
10226 || !htab->elf.dynamic_sections_created
10227 || h->dynindx == -1)
10228 {
10229 /* We don't need to fill in the .plt. The ppc dynamic
10230 linker will fill it in. */
10231 }
10232 else
10233 {
10234 bfd_vma val = (htab->glink_pltresolve + ent->plt.offset
10235 + htab->glink->output_section->vma
10236 + htab->glink->output_offset);
10237 bfd_put_32 (output_bfd, val,
10238 splt->contents + ent->plt.offset);
10239 }
10240 }
10241
10242 /* Fill in the entry in the .rela.plt section. */
10243 rela.r_addend = 0;
10244 if (!htab->elf.dynamic_sections_created
10245 || h->dynindx == -1)
10246 {
10247 BFD_ASSERT (h->type == STT_GNU_IFUNC
10248 && h->def_regular
10249 && (h->root.type == bfd_link_hash_defined
10250 || h->root.type == bfd_link_hash_defweak));
10251 rela.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
10252 rela.r_addend = SYM_VAL (h);
10253 }
10254 else
10255 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_JMP_SLOT);
10256
10257 if (!htab->elf.dynamic_sections_created
10258 || h->dynindx == -1)
10259 loc = (htab->elf.irelplt->contents
10260 + (htab->elf.irelplt->reloc_count++
10261 * sizeof (Elf32_External_Rela)));
10262 else
10263 loc = (htab->elf.srelplt->contents
10264 + reloc_index * sizeof (Elf32_External_Rela));
10265 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10266
10267 if (!h->def_regular)
10268 {
10269 /* Mark the symbol as undefined, rather than as
10270 defined in the .plt section. Leave the value if
10271 there were any relocations where pointer equality
10272 matters (this is a clue for the dynamic linker, to
10273 make function pointer comparisons work between an
10274 application and shared library), otherwise set it
10275 to zero. */
10276 sym->st_shndx = SHN_UNDEF;
10277 if (!h->pointer_equality_needed)
10278 sym->st_value = 0;
10279 else if (!h->ref_regular_nonweak)
10280 {
10281 /* This breaks function pointer comparisons, but
10282 that is better than breaking tests for a NULL
10283 function pointer. */
10284 sym->st_value = 0;
10285 }
10286 }
10287 else if (h->type == STT_GNU_IFUNC
10288 && !bfd_link_pic (info))
10289 {
10290 /* Set the value of ifunc symbols in a non-pie
10291 executable to the glink entry. This is to avoid
10292 text relocations. We can't do this for ifunc in
10293 allocate_dynrelocs, as we do for normal dynamic
10294 function symbols with plt entries, because we need
10295 to keep the original value around for the ifunc
10296 relocation. */
10297 sym->st_shndx = (_bfd_elf_section_from_bfd_section
10298 (output_bfd, htab->glink->output_section));
10299 sym->st_value = (ent->glink_offset
10300 + htab->glink->output_offset
10301 + htab->glink->output_section->vma);
10302 }
10303 doneone = TRUE;
10304 }
10305
10306 if (htab->plt_type == PLT_NEW
10307 || !htab->elf.dynamic_sections_created
10308 || h->dynindx == -1)
10309 {
10310 unsigned char *p;
10311 asection *splt = htab->elf.splt;
10312 if (!htab->elf.dynamic_sections_created
10313 || h->dynindx == -1)
10314 splt = htab->elf.iplt;
10315
10316 p = (unsigned char *) htab->glink->contents + ent->glink_offset;
10317
10318 if (h == htab->tls_get_addr && !htab->params->no_tls_get_addr_opt)
10319 {
10320 bfd_put_32 (output_bfd, LWZ_11_3, p);
10321 p += 4;
10322 bfd_put_32 (output_bfd, LWZ_12_3 + 4, p);
10323 p += 4;
10324 bfd_put_32 (output_bfd, MR_0_3, p);
10325 p += 4;
10326 bfd_put_32 (output_bfd, CMPWI_11_0, p);
10327 p += 4;
10328 bfd_put_32 (output_bfd, ADD_3_12_2, p);
10329 p += 4;
10330 bfd_put_32 (output_bfd, BEQLR, p);
10331 p += 4;
10332 bfd_put_32 (output_bfd, MR_3_0, p);
10333 p += 4;
10334 bfd_put_32 (output_bfd, NOP, p);
10335 p += 4;
10336 }
10337
10338 write_glink_stub (ent, splt, p, info);
10339
10340 if (!bfd_link_pic (info))
10341 /* We only need one non-PIC glink stub. */
10342 break;
10343 }
10344 else
10345 break;
10346 }
10347
10348 if (h->needs_copy)
10349 {
10350 asection *s;
10351 Elf_Internal_Rela rela;
10352 bfd_byte *loc;
10353
10354 /* This symbols needs a copy reloc. Set it up. */
10355
10356 #ifdef DEBUG
10357 fprintf (stderr, ", copy");
10358 #endif
10359
10360 BFD_ASSERT (h->dynindx != -1);
10361
10362 if (ppc_elf_hash_entry (h)->has_sda_refs)
10363 s = htab->relsbss;
10364 else if ((h->root.u.def.section->flags & SEC_READONLY) != 0)
10365 s = htab->elf.sreldynrelro;
10366 else
10367 s = htab->elf.srelbss;
10368 BFD_ASSERT (s != NULL);
10369
10370 rela.r_offset = SYM_VAL (h);
10371 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_COPY);
10372 rela.r_addend = 0;
10373 loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
10374 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10375 }
10376
10377 #ifdef DEBUG
10378 fprintf (stderr, "\n");
10379 #endif
10380
10381 return TRUE;
10382 }
10383 \f
10384 static enum elf_reloc_type_class
10385 ppc_elf_reloc_type_class (const struct bfd_link_info *info,
10386 const asection *rel_sec,
10387 const Elf_Internal_Rela *rela)
10388 {
10389 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
10390
10391 if (rel_sec == htab->elf.irelplt)
10392 return reloc_class_ifunc;
10393
10394 switch (ELF32_R_TYPE (rela->r_info))
10395 {
10396 case R_PPC_RELATIVE:
10397 return reloc_class_relative;
10398 case R_PPC_JMP_SLOT:
10399 return reloc_class_plt;
10400 case R_PPC_COPY:
10401 return reloc_class_copy;
10402 default:
10403 return reloc_class_normal;
10404 }
10405 }
10406 \f
10407 /* Finish up the dynamic sections. */
10408
10409 static bfd_boolean
10410 ppc_elf_finish_dynamic_sections (bfd *output_bfd,
10411 struct bfd_link_info *info)
10412 {
10413 asection *sdyn;
10414 asection *splt;
10415 struct ppc_elf_link_hash_table *htab;
10416 bfd_vma got;
10417 bfd *dynobj;
10418 bfd_boolean ret = TRUE;
10419
10420 #ifdef DEBUG
10421 fprintf (stderr, "ppc_elf_finish_dynamic_sections called\n");
10422 #endif
10423
10424 htab = ppc_elf_hash_table (info);
10425 dynobj = htab->elf.dynobj;
10426 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
10427 if (htab->is_vxworks)
10428 splt = htab->elf.splt;
10429 else
10430 splt = NULL;
10431
10432 got = 0;
10433 if (htab->elf.hgot != NULL)
10434 got = SYM_VAL (htab->elf.hgot);
10435
10436 if (htab->elf.dynamic_sections_created)
10437 {
10438 Elf32_External_Dyn *dyncon, *dynconend;
10439
10440 BFD_ASSERT (htab->elf.splt != NULL && sdyn != NULL);
10441
10442 dyncon = (Elf32_External_Dyn *) sdyn->contents;
10443 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
10444 for (; dyncon < dynconend; dyncon++)
10445 {
10446 Elf_Internal_Dyn dyn;
10447 asection *s;
10448
10449 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
10450
10451 switch (dyn.d_tag)
10452 {
10453 case DT_PLTGOT:
10454 if (htab->is_vxworks)
10455 s = htab->elf.sgotplt;
10456 else
10457 s = htab->elf.splt;
10458 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
10459 break;
10460
10461 case DT_PLTRELSZ:
10462 dyn.d_un.d_val = htab->elf.srelplt->size;
10463 break;
10464
10465 case DT_JMPREL:
10466 s = htab->elf.srelplt;
10467 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
10468 break;
10469
10470 case DT_PPC_GOT:
10471 dyn.d_un.d_ptr = got;
10472 break;
10473
10474 default:
10475 if (htab->is_vxworks
10476 && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn))
10477 break;
10478 continue;
10479 }
10480
10481 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
10482 }
10483 }
10484
10485 if (htab->elf.sgot != NULL)
10486 {
10487 if (htab->elf.hgot->root.u.def.section == htab->elf.sgot
10488 || htab->elf.hgot->root.u.def.section == htab->elf.sgotplt)
10489 {
10490 unsigned char *p = htab->elf.hgot->root.u.def.section->contents;
10491
10492 p += htab->elf.hgot->root.u.def.value;
10493 if (htab->plt_type == PLT_OLD)
10494 {
10495 /* Add a blrl instruction at _GLOBAL_OFFSET_TABLE_-4
10496 so that a function can easily find the address of
10497 _GLOBAL_OFFSET_TABLE_. */
10498 BFD_ASSERT (htab->elf.hgot->root.u.def.value - 4
10499 < htab->elf.hgot->root.u.def.section->size);
10500 bfd_put_32 (output_bfd, 0x4e800021, p - 4);
10501 }
10502
10503 if (sdyn != NULL)
10504 {
10505 bfd_vma val = sdyn->output_section->vma + sdyn->output_offset;
10506 BFD_ASSERT (htab->elf.hgot->root.u.def.value
10507 < htab->elf.hgot->root.u.def.section->size);
10508 bfd_put_32 (output_bfd, val, p);
10509 }
10510 }
10511 else
10512 {
10513 /* xgettext:c-format */
10514 info->callbacks->einfo (_("%P: %s not defined in linker created %s\n"),
10515 htab->elf.hgot->root.root.string,
10516 (htab->elf.sgotplt != NULL
10517 ? htab->elf.sgotplt->name
10518 : htab->elf.sgot->name));
10519 bfd_set_error (bfd_error_bad_value);
10520 ret = FALSE;
10521 }
10522
10523 elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize = 4;
10524 }
10525
10526 /* Fill in the first entry in the VxWorks procedure linkage table. */
10527 if (splt && splt->size > 0)
10528 {
10529 /* Use the right PLT. */
10530 const bfd_vma *plt_entry = (bfd_link_pic (info)
10531 ? ppc_elf_vxworks_pic_plt0_entry
10532 : ppc_elf_vxworks_plt0_entry);
10533
10534 if (!bfd_link_pic (info))
10535 {
10536 bfd_vma got_value = SYM_VAL (htab->elf.hgot);
10537
10538 bfd_put_32 (output_bfd, plt_entry[0] | PPC_HA (got_value),
10539 splt->contents + 0);
10540 bfd_put_32 (output_bfd, plt_entry[1] | PPC_LO (got_value),
10541 splt->contents + 4);
10542 }
10543 else
10544 {
10545 bfd_put_32 (output_bfd, plt_entry[0], splt->contents + 0);
10546 bfd_put_32 (output_bfd, plt_entry[1], splt->contents + 4);
10547 }
10548 bfd_put_32 (output_bfd, plt_entry[2], splt->contents + 8);
10549 bfd_put_32 (output_bfd, plt_entry[3], splt->contents + 12);
10550 bfd_put_32 (output_bfd, plt_entry[4], splt->contents + 16);
10551 bfd_put_32 (output_bfd, plt_entry[5], splt->contents + 20);
10552 bfd_put_32 (output_bfd, plt_entry[6], splt->contents + 24);
10553 bfd_put_32 (output_bfd, plt_entry[7], splt->contents + 28);
10554
10555 if (! bfd_link_pic (info))
10556 {
10557 Elf_Internal_Rela rela;
10558 bfd_byte *loc;
10559
10560 loc = htab->srelplt2->contents;
10561
10562 /* Output the @ha relocation for the first instruction. */
10563 rela.r_offset = (htab->elf.splt->output_section->vma
10564 + htab->elf.splt->output_offset
10565 + 2);
10566 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
10567 rela.r_addend = 0;
10568 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10569 loc += sizeof (Elf32_External_Rela);
10570
10571 /* Output the @l relocation for the second instruction. */
10572 rela.r_offset = (htab->elf.splt->output_section->vma
10573 + htab->elf.splt->output_offset
10574 + 6);
10575 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
10576 rela.r_addend = 0;
10577 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10578 loc += sizeof (Elf32_External_Rela);
10579
10580 /* Fix up the remaining relocations. They may have the wrong
10581 symbol index for _G_O_T_ or _P_L_T_ depending on the order
10582 in which symbols were output. */
10583 while (loc < htab->srelplt2->contents + htab->srelplt2->size)
10584 {
10585 Elf_Internal_Rela rel;
10586
10587 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
10588 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
10589 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
10590 loc += sizeof (Elf32_External_Rela);
10591
10592 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
10593 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
10594 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
10595 loc += sizeof (Elf32_External_Rela);
10596
10597 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
10598 rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_PPC_ADDR32);
10599 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
10600 loc += sizeof (Elf32_External_Rela);
10601 }
10602 }
10603 }
10604
10605 if (htab->glink != NULL
10606 && htab->glink->contents != NULL
10607 && htab->elf.dynamic_sections_created)
10608 {
10609 unsigned char *p;
10610 unsigned char *endp;
10611 bfd_vma res0;
10612 unsigned int i;
10613
10614 /*
10615 * PIC glink code is the following:
10616 *
10617 * # ith PLT code stub.
10618 * addis 11,30,(plt+(i-1)*4-got)@ha
10619 * lwz 11,(plt+(i-1)*4-got)@l(11)
10620 * mtctr 11
10621 * bctr
10622 *
10623 * # A table of branches, one for each plt entry.
10624 * # The idea is that the plt call stub loads ctr and r11 with these
10625 * # addresses, so (r11 - res_0) gives the plt index * 4.
10626 * res_0: b PLTresolve
10627 * res_1: b PLTresolve
10628 * .
10629 * # Some number of entries towards the end can be nops
10630 * res_n_m3: nop
10631 * res_n_m2: nop
10632 * res_n_m1:
10633 *
10634 * PLTresolve:
10635 * addis 11,11,(1f-res_0)@ha
10636 * mflr 0
10637 * bcl 20,31,1f
10638 * 1: addi 11,11,(1b-res_0)@l
10639 * mflr 12
10640 * mtlr 0
10641 * sub 11,11,12 # r11 = index * 4
10642 * addis 12,12,(got+4-1b)@ha
10643 * lwz 0,(got+4-1b)@l(12) # got[1] address of dl_runtime_resolve
10644 * lwz 12,(got+8-1b)@l(12) # got[2] contains the map address
10645 * mtctr 0
10646 * add 0,11,11
10647 * add 11,0,11 # r11 = index * 12 = reloc offset.
10648 * bctr
10649 */
10650 static const unsigned int pic_plt_resolve[] =
10651 {
10652 ADDIS_11_11,
10653 MFLR_0,
10654 BCL_20_31,
10655 ADDI_11_11,
10656 MFLR_12,
10657 MTLR_0,
10658 SUB_11_11_12,
10659 ADDIS_12_12,
10660 LWZ_0_12,
10661 LWZ_12_12,
10662 MTCTR_0,
10663 ADD_0_11_11,
10664 ADD_11_0_11,
10665 BCTR,
10666 NOP,
10667 NOP
10668 };
10669
10670 /*
10671 * Non-PIC glink code is a little simpler.
10672 *
10673 * # ith PLT code stub.
10674 * lis 11,(plt+(i-1)*4)@ha
10675 * lwz 11,(plt+(i-1)*4)@l(11)
10676 * mtctr 11
10677 * bctr
10678 *
10679 * The branch table is the same, then comes
10680 *
10681 * PLTresolve:
10682 * lis 12,(got+4)@ha
10683 * addis 11,11,(-res_0)@ha
10684 * lwz 0,(got+4)@l(12) # got[1] address of dl_runtime_resolve
10685 * addi 11,11,(-res_0)@l # r11 = index * 4
10686 * mtctr 0
10687 * add 0,11,11
10688 * lwz 12,(got+8)@l(12) # got[2] contains the map address
10689 * add 11,0,11 # r11 = index * 12 = reloc offset.
10690 * bctr
10691 */
10692 static const unsigned int plt_resolve[] =
10693 {
10694 LIS_12,
10695 ADDIS_11_11,
10696 LWZ_0_12,
10697 ADDI_11_11,
10698 MTCTR_0,
10699 ADD_0_11_11,
10700 LWZ_12_12,
10701 ADD_11_0_11,
10702 BCTR,
10703 NOP,
10704 NOP,
10705 NOP,
10706 NOP,
10707 NOP,
10708 NOP,
10709 NOP
10710 };
10711
10712 if (ARRAY_SIZE (pic_plt_resolve) != GLINK_PLTRESOLVE / 4)
10713 abort ();
10714 if (ARRAY_SIZE (plt_resolve) != GLINK_PLTRESOLVE / 4)
10715 abort ();
10716
10717 /* Build the branch table, one for each plt entry (less one),
10718 and perhaps some padding. */
10719 p = htab->glink->contents;
10720 p += htab->glink_pltresolve;
10721 endp = htab->glink->contents;
10722 endp += htab->glink->size - GLINK_PLTRESOLVE;
10723 while (p < endp - (htab->params->ppc476_workaround ? 0 : 8 * 4))
10724 {
10725 bfd_put_32 (output_bfd, B + endp - p, p);
10726 p += 4;
10727 }
10728 while (p < endp)
10729 {
10730 bfd_put_32 (output_bfd, NOP, p);
10731 p += 4;
10732 }
10733
10734 res0 = (htab->glink_pltresolve
10735 + htab->glink->output_section->vma
10736 + htab->glink->output_offset);
10737
10738 if (htab->params->ppc476_workaround)
10739 {
10740 /* Ensure that a call stub at the end of a page doesn't
10741 result in prefetch over the end of the page into the
10742 glink branch table. */
10743 bfd_vma pagesize = (bfd_vma) 1 << htab->params->pagesize_p2;
10744 bfd_vma page_addr;
10745 bfd_vma glink_start = (htab->glink->output_section->vma
10746 + htab->glink->output_offset);
10747
10748 for (page_addr = res0 & -pagesize;
10749 page_addr > glink_start;
10750 page_addr -= pagesize)
10751 {
10752 /* We have a plt call stub that may need fixing. */
10753 bfd_byte *loc;
10754 unsigned int insn;
10755
10756 loc = htab->glink->contents + page_addr - 4 - glink_start;
10757 insn = bfd_get_32 (output_bfd, loc);
10758 if (insn == BCTR)
10759 {
10760 /* By alignment, we know that there must be at least
10761 one other call stub before this one. */
10762 insn = bfd_get_32 (output_bfd, loc - 16);
10763 if (insn == BCTR)
10764 bfd_put_32 (output_bfd, B | (-16 & 0x3fffffc), loc);
10765 else
10766 bfd_put_32 (output_bfd, B | (-20 & 0x3fffffc), loc);
10767 }
10768 }
10769 }
10770
10771 /* Last comes the PLTresolve stub. */
10772 if (bfd_link_pic (info))
10773 {
10774 bfd_vma bcl;
10775
10776 for (i = 0; i < ARRAY_SIZE (pic_plt_resolve); i++)
10777 {
10778 unsigned int insn = pic_plt_resolve[i];
10779
10780 if (htab->params->ppc476_workaround && insn == NOP)
10781 insn = BA + 0;
10782 bfd_put_32 (output_bfd, insn, p);
10783 p += 4;
10784 }
10785 p -= 4 * ARRAY_SIZE (pic_plt_resolve);
10786
10787 bcl = (htab->glink->size - GLINK_PLTRESOLVE + 3*4
10788 + htab->glink->output_section->vma
10789 + htab->glink->output_offset);
10790
10791 bfd_put_32 (output_bfd,
10792 ADDIS_11_11 + PPC_HA (bcl - res0), p + 0*4);
10793 bfd_put_32 (output_bfd,
10794 ADDI_11_11 + PPC_LO (bcl - res0), p + 3*4);
10795 bfd_put_32 (output_bfd,
10796 ADDIS_12_12 + PPC_HA (got + 4 - bcl), p + 7*4);
10797 if (PPC_HA (got + 4 - bcl) == PPC_HA (got + 8 - bcl))
10798 {
10799 bfd_put_32 (output_bfd,
10800 LWZ_0_12 + PPC_LO (got + 4 - bcl), p + 8*4);
10801 bfd_put_32 (output_bfd,
10802 LWZ_12_12 + PPC_LO (got + 8 - bcl), p + 9*4);
10803 }
10804 else
10805 {
10806 bfd_put_32 (output_bfd,
10807 LWZU_0_12 + PPC_LO (got + 4 - bcl), p + 8*4);
10808 bfd_put_32 (output_bfd,
10809 LWZ_12_12 + 4, p + 9*4);
10810 }
10811 }
10812 else
10813 {
10814 for (i = 0; i < ARRAY_SIZE (plt_resolve); i++)
10815 {
10816 unsigned int insn = plt_resolve[i];
10817
10818 if (htab->params->ppc476_workaround && insn == NOP)
10819 insn = BA + 0;
10820 bfd_put_32 (output_bfd, insn, p);
10821 p += 4;
10822 }
10823 p -= 4 * ARRAY_SIZE (plt_resolve);
10824
10825 bfd_put_32 (output_bfd,
10826 LIS_12 + PPC_HA (got + 4), p + 0*4);
10827 bfd_put_32 (output_bfd,
10828 ADDIS_11_11 + PPC_HA (-res0), p + 1*4);
10829 bfd_put_32 (output_bfd,
10830 ADDI_11_11 + PPC_LO (-res0), p + 3*4);
10831 if (PPC_HA (got + 4) == PPC_HA (got + 8))
10832 {
10833 bfd_put_32 (output_bfd,
10834 LWZ_0_12 + PPC_LO (got + 4), p + 2*4);
10835 bfd_put_32 (output_bfd,
10836 LWZ_12_12 + PPC_LO (got + 8), p + 6*4);
10837 }
10838 else
10839 {
10840 bfd_put_32 (output_bfd,
10841 LWZU_0_12 + PPC_LO (got + 4), p + 2*4);
10842 bfd_put_32 (output_bfd,
10843 LWZ_12_12 + 4, p + 6*4);
10844 }
10845 }
10846 }
10847
10848 if (htab->glink_eh_frame != NULL
10849 && htab->glink_eh_frame->contents != NULL)
10850 {
10851 unsigned char *p = htab->glink_eh_frame->contents;
10852 bfd_vma val;
10853
10854 p += sizeof (glink_eh_frame_cie);
10855 /* FDE length. */
10856 p += 4;
10857 /* CIE pointer. */
10858 p += 4;
10859 /* Offset to .glink. */
10860 val = (htab->glink->output_section->vma
10861 + htab->glink->output_offset);
10862 val -= (htab->glink_eh_frame->output_section->vma
10863 + htab->glink_eh_frame->output_offset);
10864 val -= p - htab->glink_eh_frame->contents;
10865 bfd_put_32 (htab->elf.dynobj, val, p);
10866
10867 if (htab->glink_eh_frame->sec_info_type == SEC_INFO_TYPE_EH_FRAME
10868 && !_bfd_elf_write_section_eh_frame (output_bfd, info,
10869 htab->glink_eh_frame,
10870 htab->glink_eh_frame->contents))
10871 return FALSE;
10872 }
10873
10874 return ret;
10875 }
10876 \f
10877 #define TARGET_LITTLE_SYM powerpc_elf32_le_vec
10878 #define TARGET_LITTLE_NAME "elf32-powerpcle"
10879 #define TARGET_BIG_SYM powerpc_elf32_vec
10880 #define TARGET_BIG_NAME "elf32-powerpc"
10881 #define ELF_ARCH bfd_arch_powerpc
10882 #define ELF_TARGET_ID PPC32_ELF_DATA
10883 #define ELF_MACHINE_CODE EM_PPC
10884 #ifdef __QNXTARGET__
10885 #define ELF_MAXPAGESIZE 0x1000
10886 #define ELF_COMMONPAGESIZE 0x1000
10887 #else
10888 #define ELF_MAXPAGESIZE 0x10000
10889 #define ELF_COMMONPAGESIZE 0x10000
10890 #endif
10891 #define ELF_MINPAGESIZE 0x1000
10892 #define elf_info_to_howto ppc_elf_info_to_howto
10893
10894 #ifdef EM_CYGNUS_POWERPC
10895 #define ELF_MACHINE_ALT1 EM_CYGNUS_POWERPC
10896 #endif
10897
10898 #ifdef EM_PPC_OLD
10899 #define ELF_MACHINE_ALT2 EM_PPC_OLD
10900 #endif
10901
10902 #define elf_backend_plt_not_loaded 1
10903 #define elf_backend_want_dynrelro 1
10904 #define elf_backend_can_gc_sections 1
10905 #define elf_backend_can_refcount 1
10906 #define elf_backend_rela_normal 1
10907 #define elf_backend_caches_rawsize 1
10908
10909 #define bfd_elf32_mkobject ppc_elf_mkobject
10910 #define bfd_elf32_bfd_merge_private_bfd_data ppc_elf_merge_private_bfd_data
10911 #define bfd_elf32_bfd_relax_section ppc_elf_relax_section
10912 #define bfd_elf32_bfd_reloc_type_lookup ppc_elf_reloc_type_lookup
10913 #define bfd_elf32_bfd_reloc_name_lookup ppc_elf_reloc_name_lookup
10914 #define bfd_elf32_bfd_set_private_flags ppc_elf_set_private_flags
10915 #define bfd_elf32_bfd_link_hash_table_create ppc_elf_link_hash_table_create
10916 #define bfd_elf32_get_synthetic_symtab ppc_elf_get_synthetic_symtab
10917
10918 #define elf_backend_object_p ppc_elf_object_p
10919 #define elf_backend_gc_mark_hook ppc_elf_gc_mark_hook
10920 #define elf_backend_gc_sweep_hook ppc_elf_gc_sweep_hook
10921 #define elf_backend_section_from_shdr ppc_elf_section_from_shdr
10922 #define elf_backend_relocate_section ppc_elf_relocate_section
10923 #define elf_backend_create_dynamic_sections ppc_elf_create_dynamic_sections
10924 #define elf_backend_check_relocs ppc_elf_check_relocs
10925 #define elf_backend_copy_indirect_symbol ppc_elf_copy_indirect_symbol
10926 #define elf_backend_adjust_dynamic_symbol ppc_elf_adjust_dynamic_symbol
10927 #define elf_backend_add_symbol_hook ppc_elf_add_symbol_hook
10928 #define elf_backend_size_dynamic_sections ppc_elf_size_dynamic_sections
10929 #define elf_backend_hash_symbol ppc_elf_hash_symbol
10930 #define elf_backend_finish_dynamic_symbol ppc_elf_finish_dynamic_symbol
10931 #define elf_backend_finish_dynamic_sections ppc_elf_finish_dynamic_sections
10932 #define elf_backend_fake_sections ppc_elf_fake_sections
10933 #define elf_backend_additional_program_headers ppc_elf_additional_program_headers
10934 #define elf_backend_modify_segment_map ppc_elf_modify_segment_map
10935 #define elf_backend_grok_prstatus ppc_elf_grok_prstatus
10936 #define elf_backend_grok_psinfo ppc_elf_grok_psinfo
10937 #define elf_backend_write_core_note ppc_elf_write_core_note
10938 #define elf_backend_reloc_type_class ppc_elf_reloc_type_class
10939 #define elf_backend_begin_write_processing ppc_elf_begin_write_processing
10940 #define elf_backend_final_write_processing ppc_elf_final_write_processing
10941 #define elf_backend_write_section ppc_elf_write_section
10942 #define elf_backend_get_sec_type_attr ppc_elf_get_sec_type_attr
10943 #define elf_backend_plt_sym_val ppc_elf_plt_sym_val
10944 #define elf_backend_action_discarded ppc_elf_action_discarded
10945 #define elf_backend_init_index_section _bfd_elf_init_1_index_section
10946 #define elf_backend_lookup_section_flags_hook ppc_elf_lookup_section_flags
10947
10948 #include "elf32-target.h"
10949
10950 /* FreeBSD Target */
10951
10952 #undef TARGET_LITTLE_SYM
10953 #undef TARGET_LITTLE_NAME
10954
10955 #undef TARGET_BIG_SYM
10956 #define TARGET_BIG_SYM powerpc_elf32_fbsd_vec
10957 #undef TARGET_BIG_NAME
10958 #define TARGET_BIG_NAME "elf32-powerpc-freebsd"
10959
10960 #undef ELF_OSABI
10961 #define ELF_OSABI ELFOSABI_FREEBSD
10962
10963 #undef elf32_bed
10964 #define elf32_bed elf32_powerpc_fbsd_bed
10965
10966 #include "elf32-target.h"
10967
10968 /* VxWorks Target */
10969
10970 #undef TARGET_LITTLE_SYM
10971 #undef TARGET_LITTLE_NAME
10972
10973 #undef TARGET_BIG_SYM
10974 #define TARGET_BIG_SYM powerpc_elf32_vxworks_vec
10975 #undef TARGET_BIG_NAME
10976 #define TARGET_BIG_NAME "elf32-powerpc-vxworks"
10977
10978 #undef ELF_OSABI
10979
10980 /* VxWorks uses the elf default section flags for .plt. */
10981 static const struct bfd_elf_special_section *
10982 ppc_elf_vxworks_get_sec_type_attr (bfd *abfd ATTRIBUTE_UNUSED, asection *sec)
10983 {
10984 if (sec->name == NULL)
10985 return NULL;
10986
10987 if (strcmp (sec->name, ".plt") == 0)
10988 return _bfd_elf_get_sec_type_attr (abfd, sec);
10989
10990 return ppc_elf_get_sec_type_attr (abfd, sec);
10991 }
10992
10993 /* Like ppc_elf_link_hash_table_create, but overrides
10994 appropriately for VxWorks. */
10995 static struct bfd_link_hash_table *
10996 ppc_elf_vxworks_link_hash_table_create (bfd *abfd)
10997 {
10998 struct bfd_link_hash_table *ret;
10999
11000 ret = ppc_elf_link_hash_table_create (abfd);
11001 if (ret)
11002 {
11003 struct ppc_elf_link_hash_table *htab
11004 = (struct ppc_elf_link_hash_table *)ret;
11005 htab->is_vxworks = 1;
11006 htab->plt_type = PLT_VXWORKS;
11007 htab->plt_entry_size = VXWORKS_PLT_ENTRY_SIZE;
11008 htab->plt_slot_size = VXWORKS_PLT_ENTRY_SIZE;
11009 htab->plt_initial_entry_size = VXWORKS_PLT_INITIAL_ENTRY_SIZE;
11010 }
11011 return ret;
11012 }
11013
11014 /* Tweak magic VxWorks symbols as they are loaded. */
11015 static bfd_boolean
11016 ppc_elf_vxworks_add_symbol_hook (bfd *abfd,
11017 struct bfd_link_info *info,
11018 Elf_Internal_Sym *sym,
11019 const char **namep ATTRIBUTE_UNUSED,
11020 flagword *flagsp ATTRIBUTE_UNUSED,
11021 asection **secp,
11022 bfd_vma *valp)
11023 {
11024 if (!elf_vxworks_add_symbol_hook(abfd, info, sym,namep, flagsp, secp,
11025 valp))
11026 return FALSE;
11027
11028 return ppc_elf_add_symbol_hook(abfd, info, sym,namep, flagsp, secp, valp);
11029 }
11030
11031 static void
11032 ppc_elf_vxworks_final_write_processing (bfd *abfd, bfd_boolean linker)
11033 {
11034 ppc_elf_final_write_processing(abfd, linker);
11035 elf_vxworks_final_write_processing(abfd, linker);
11036 }
11037
11038 /* On VxWorks, we emit relocations against _PROCEDURE_LINKAGE_TABLE_, so
11039 define it. */
11040 #undef elf_backend_want_plt_sym
11041 #define elf_backend_want_plt_sym 1
11042 #undef elf_backend_want_got_plt
11043 #define elf_backend_want_got_plt 1
11044 #undef elf_backend_got_symbol_offset
11045 #define elf_backend_got_symbol_offset 0
11046 #undef elf_backend_plt_not_loaded
11047 #define elf_backend_plt_not_loaded 0
11048 #undef elf_backend_plt_readonly
11049 #define elf_backend_plt_readonly 1
11050 #undef elf_backend_got_header_size
11051 #define elf_backend_got_header_size 12
11052 #undef elf_backend_dtrel_excludes_plt
11053 #define elf_backend_dtrel_excludes_plt 1
11054
11055 #undef bfd_elf32_get_synthetic_symtab
11056
11057 #undef bfd_elf32_bfd_link_hash_table_create
11058 #define bfd_elf32_bfd_link_hash_table_create \
11059 ppc_elf_vxworks_link_hash_table_create
11060 #undef elf_backend_add_symbol_hook
11061 #define elf_backend_add_symbol_hook \
11062 ppc_elf_vxworks_add_symbol_hook
11063 #undef elf_backend_link_output_symbol_hook
11064 #define elf_backend_link_output_symbol_hook \
11065 elf_vxworks_link_output_symbol_hook
11066 #undef elf_backend_final_write_processing
11067 #define elf_backend_final_write_processing \
11068 ppc_elf_vxworks_final_write_processing
11069 #undef elf_backend_get_sec_type_attr
11070 #define elf_backend_get_sec_type_attr \
11071 ppc_elf_vxworks_get_sec_type_attr
11072 #undef elf_backend_emit_relocs
11073 #define elf_backend_emit_relocs \
11074 elf_vxworks_emit_relocs
11075
11076 #undef elf32_bed
11077 #define elf32_bed ppc_elf_vxworks_bed
11078 #undef elf_backend_post_process_headers
11079
11080 #include "elf32-target.h"
GDB Binutils - Deliverables
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