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[binutils-gdb.git] / bfd / elf32-ppc.c
1 /* PowerPC-specific support for 32-bit ELF
2 Copyright (C) 1994-2014 Free Software Foundation, Inc.
3 Written by Ian Lance Taylor, Cygnus Support.
4
5 This file is part of BFD, the Binary File Descriptor library.
6
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
11
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
16
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the
19 Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor,
20 Boston, MA 02110-1301, USA. */
21
22
23 /* This file is based on a preliminary PowerPC ELF ABI. The
24 information may not match the final PowerPC ELF ABI. It includes
25 suggestions from the in-progress Embedded PowerPC ABI, and that
26 information may also not match. */
27
28 #include "sysdep.h"
29 #include <stdarg.h>
30 #include "bfd.h"
31 #include "bfdlink.h"
32 #include "libbfd.h"
33 #include "elf-bfd.h"
34 #include "elf/ppc.h"
35 #include "elf32-ppc.h"
36 #include "elf-vxworks.h"
37 #include "dwarf2.h"
38 #include "elf-linux-psinfo.h"
39
40 typedef enum split16_format_type
41 {
42 split16a_type = 0,
43 split16d_type
44 }
45 split16_format_type;
46
47 /* RELA relocations are used here. */
48
49 static bfd_reloc_status_type ppc_elf_addr16_ha_reloc
50 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
51 static bfd_reloc_status_type ppc_elf_unhandled_reloc
52 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
53 static void ppc_elf_vle_split16
54 (bfd *, bfd_byte *, bfd_vma, bfd_vma, split16_format_type);
55
56 /* Branch prediction bit for branch taken relocs. */
57 #define BRANCH_PREDICT_BIT 0x200000
58 /* Mask to set RA in memory instructions. */
59 #define RA_REGISTER_MASK 0x001f0000
60 /* Value to shift register by to insert RA. */
61 #define RA_REGISTER_SHIFT 16
62
63 /* The name of the dynamic interpreter. This is put in the .interp
64 section. */
65 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
66
67 /* For old-style PLT. */
68 /* The number of single-slot PLT entries (the rest use two slots). */
69 #define PLT_NUM_SINGLE_ENTRIES 8192
70
71 /* For new-style .glink and .plt. */
72 #define GLINK_PLTRESOLVE 16*4
73 #define GLINK_ENTRY_SIZE 4*4
74 #define TLS_GET_ADDR_GLINK_SIZE 12*4
75
76 /* VxWorks uses its own plt layout, filled in by the static linker. */
77
78 /* The standard VxWorks PLT entry. */
79 #define VXWORKS_PLT_ENTRY_SIZE 32
80 static const bfd_vma ppc_elf_vxworks_plt_entry
81 [VXWORKS_PLT_ENTRY_SIZE / 4] =
82 {
83 0x3d800000, /* lis r12,0 */
84 0x818c0000, /* lwz r12,0(r12) */
85 0x7d8903a6, /* mtctr r12 */
86 0x4e800420, /* bctr */
87 0x39600000, /* li r11,0 */
88 0x48000000, /* b 14 <.PLT0resolve+0x4> */
89 0x60000000, /* nop */
90 0x60000000, /* nop */
91 };
92 static const bfd_vma ppc_elf_vxworks_pic_plt_entry
93 [VXWORKS_PLT_ENTRY_SIZE / 4] =
94 {
95 0x3d9e0000, /* addis r12,r30,0 */
96 0x818c0000, /* lwz r12,0(r12) */
97 0x7d8903a6, /* mtctr r12 */
98 0x4e800420, /* bctr */
99 0x39600000, /* li r11,0 */
100 0x48000000, /* b 14 <.PLT0resolve+0x4> 14: R_PPC_REL24 .PLTresolve */
101 0x60000000, /* nop */
102 0x60000000, /* nop */
103 };
104
105 /* The initial VxWorks PLT entry. */
106 #define VXWORKS_PLT_INITIAL_ENTRY_SIZE 32
107 static const bfd_vma ppc_elf_vxworks_plt0_entry
108 [VXWORKS_PLT_INITIAL_ENTRY_SIZE / 4] =
109 {
110 0x3d800000, /* lis r12,0 */
111 0x398c0000, /* addi r12,r12,0 */
112 0x800c0008, /* lwz r0,8(r12) */
113 0x7c0903a6, /* mtctr r0 */
114 0x818c0004, /* lwz r12,4(r12) */
115 0x4e800420, /* bctr */
116 0x60000000, /* nop */
117 0x60000000, /* nop */
118 };
119 static const bfd_vma ppc_elf_vxworks_pic_plt0_entry
120 [VXWORKS_PLT_INITIAL_ENTRY_SIZE / 4] =
121 {
122 0x819e0008, /* lwz r12,8(r30) */
123 0x7d8903a6, /* mtctr r12 */
124 0x819e0004, /* lwz r12,4(r30) */
125 0x4e800420, /* bctr */
126 0x60000000, /* nop */
127 0x60000000, /* nop */
128 0x60000000, /* nop */
129 0x60000000, /* nop */
130 };
131
132 /* For executables, we have some additional relocations in
133 .rela.plt.unloaded, for the kernel loader. */
134
135 /* The number of non-JMP_SLOT relocations per PLT0 slot. */
136 #define VXWORKS_PLT_NON_JMP_SLOT_RELOCS 3
137 /* The number of relocations in the PLTResolve slot. */
138 #define VXWORKS_PLTRESOLVE_RELOCS 2
139 /* The number of relocations in the PLTResolve slot when when creating
140 a shared library. */
141 #define VXWORKS_PLTRESOLVE_RELOCS_SHLIB 0
142
143 /* Some instructions. */
144 #define ADDIS_11_11 0x3d6b0000
145 #define ADDIS_11_30 0x3d7e0000
146 #define ADDIS_12_12 0x3d8c0000
147 #define ADDI_11_11 0x396b0000
148 #define ADD_0_11_11 0x7c0b5a14
149 #define ADD_3_12_2 0x7c6c1214
150 #define ADD_11_0_11 0x7d605a14
151 #define B 0x48000000
152 #define BCL_20_31 0x429f0005
153 #define BCTR 0x4e800420
154 #define BEQLR 0x4d820020
155 #define CMPWI_11_0 0x2c0b0000
156 #define LIS_11 0x3d600000
157 #define LIS_12 0x3d800000
158 #define LWZU_0_12 0x840c0000
159 #define LWZ_0_12 0x800c0000
160 #define LWZ_11_3 0x81630000
161 #define LWZ_11_11 0x816b0000
162 #define LWZ_11_30 0x817e0000
163 #define LWZ_12_3 0x81830000
164 #define LWZ_12_12 0x818c0000
165 #define MR_0_3 0x7c601b78
166 #define MR_3_0 0x7c030378
167 #define MFLR_0 0x7c0802a6
168 #define MFLR_12 0x7d8802a6
169 #define MTCTR_0 0x7c0903a6
170 #define MTCTR_11 0x7d6903a6
171 #define MTLR_0 0x7c0803a6
172 #define NOP 0x60000000
173 #define SUB_11_11_12 0x7d6c5850
174
175 /* Offset of tp and dtp pointers from start of TLS block. */
176 #define TP_OFFSET 0x7000
177 #define DTP_OFFSET 0x8000
178
179 /* The value of a defined global symbol. */
180 #define SYM_VAL(SYM) \
181 ((SYM)->root.u.def.section->output_section->vma \
182 + (SYM)->root.u.def.section->output_offset \
183 + (SYM)->root.u.def.value)
184 \f
185 static reloc_howto_type *ppc_elf_howto_table[R_PPC_max];
186
187 static reloc_howto_type ppc_elf_howto_raw[] = {
188 /* This reloc does nothing. */
189 HOWTO (R_PPC_NONE, /* type */
190 0, /* rightshift */
191 2, /* size (0 = byte, 1 = short, 2 = long) */
192 32, /* bitsize */
193 FALSE, /* pc_relative */
194 0, /* bitpos */
195 complain_overflow_bitfield, /* complain_on_overflow */
196 bfd_elf_generic_reloc, /* special_function */
197 "R_PPC_NONE", /* name */
198 FALSE, /* partial_inplace */
199 0, /* src_mask */
200 0, /* dst_mask */
201 FALSE), /* pcrel_offset */
202
203 /* A standard 32 bit relocation. */
204 HOWTO (R_PPC_ADDR32, /* type */
205 0, /* rightshift */
206 2, /* size (0 = byte, 1 = short, 2 = long) */
207 32, /* bitsize */
208 FALSE, /* pc_relative */
209 0, /* bitpos */
210 complain_overflow_bitfield, /* complain_on_overflow */
211 bfd_elf_generic_reloc, /* special_function */
212 "R_PPC_ADDR32", /* name */
213 FALSE, /* partial_inplace */
214 0, /* src_mask */
215 0xffffffff, /* dst_mask */
216 FALSE), /* pcrel_offset */
217
218 /* An absolute 26 bit branch; the lower two bits must be zero.
219 FIXME: we don't check that, we just clear them. */
220 HOWTO (R_PPC_ADDR24, /* type */
221 0, /* rightshift */
222 2, /* size (0 = byte, 1 = short, 2 = long) */
223 26, /* bitsize */
224 FALSE, /* pc_relative */
225 0, /* bitpos */
226 complain_overflow_bitfield, /* complain_on_overflow */
227 bfd_elf_generic_reloc, /* special_function */
228 "R_PPC_ADDR24", /* name */
229 FALSE, /* partial_inplace */
230 0, /* src_mask */
231 0x3fffffc, /* dst_mask */
232 FALSE), /* pcrel_offset */
233
234 /* A standard 16 bit relocation. */
235 HOWTO (R_PPC_ADDR16, /* type */
236 0, /* rightshift */
237 1, /* size (0 = byte, 1 = short, 2 = long) */
238 16, /* bitsize */
239 FALSE, /* pc_relative */
240 0, /* bitpos */
241 complain_overflow_bitfield, /* complain_on_overflow */
242 bfd_elf_generic_reloc, /* special_function */
243 "R_PPC_ADDR16", /* name */
244 FALSE, /* partial_inplace */
245 0, /* src_mask */
246 0xffff, /* dst_mask */
247 FALSE), /* pcrel_offset */
248
249 /* A 16 bit relocation without overflow. */
250 HOWTO (R_PPC_ADDR16_LO, /* type */
251 0, /* rightshift */
252 1, /* size (0 = byte, 1 = short, 2 = long) */
253 16, /* bitsize */
254 FALSE, /* pc_relative */
255 0, /* bitpos */
256 complain_overflow_dont,/* complain_on_overflow */
257 bfd_elf_generic_reloc, /* special_function */
258 "R_PPC_ADDR16_LO", /* name */
259 FALSE, /* partial_inplace */
260 0, /* src_mask */
261 0xffff, /* dst_mask */
262 FALSE), /* pcrel_offset */
263
264 /* The high order 16 bits of an address. */
265 HOWTO (R_PPC_ADDR16_HI, /* type */
266 16, /* rightshift */
267 1, /* size (0 = byte, 1 = short, 2 = long) */
268 16, /* bitsize */
269 FALSE, /* pc_relative */
270 0, /* bitpos */
271 complain_overflow_dont, /* complain_on_overflow */
272 bfd_elf_generic_reloc, /* special_function */
273 "R_PPC_ADDR16_HI", /* name */
274 FALSE, /* partial_inplace */
275 0, /* src_mask */
276 0xffff, /* dst_mask */
277 FALSE), /* pcrel_offset */
278
279 /* The high order 16 bits of an address, plus 1 if the contents of
280 the low 16 bits, treated as a signed number, is negative. */
281 HOWTO (R_PPC_ADDR16_HA, /* type */
282 16, /* rightshift */
283 1, /* size (0 = byte, 1 = short, 2 = long) */
284 16, /* bitsize */
285 FALSE, /* pc_relative */
286 0, /* bitpos */
287 complain_overflow_dont, /* complain_on_overflow */
288 ppc_elf_addr16_ha_reloc, /* special_function */
289 "R_PPC_ADDR16_HA", /* name */
290 FALSE, /* partial_inplace */
291 0, /* src_mask */
292 0xffff, /* dst_mask */
293 FALSE), /* pcrel_offset */
294
295 /* An absolute 16 bit branch; the lower two bits must be zero.
296 FIXME: we don't check that, we just clear them. */
297 HOWTO (R_PPC_ADDR14, /* type */
298 0, /* rightshift */
299 2, /* size (0 = byte, 1 = short, 2 = long) */
300 16, /* bitsize */
301 FALSE, /* pc_relative */
302 0, /* bitpos */
303 complain_overflow_bitfield, /* complain_on_overflow */
304 bfd_elf_generic_reloc, /* special_function */
305 "R_PPC_ADDR14", /* name */
306 FALSE, /* partial_inplace */
307 0, /* src_mask */
308 0xfffc, /* dst_mask */
309 FALSE), /* pcrel_offset */
310
311 /* An absolute 16 bit branch, for which bit 10 should be set to
312 indicate that the branch is expected to be taken. The lower two
313 bits must be zero. */
314 HOWTO (R_PPC_ADDR14_BRTAKEN, /* type */
315 0, /* rightshift */
316 2, /* size (0 = byte, 1 = short, 2 = long) */
317 16, /* bitsize */
318 FALSE, /* pc_relative */
319 0, /* bitpos */
320 complain_overflow_bitfield, /* complain_on_overflow */
321 bfd_elf_generic_reloc, /* special_function */
322 "R_PPC_ADDR14_BRTAKEN",/* name */
323 FALSE, /* partial_inplace */
324 0, /* src_mask */
325 0xfffc, /* dst_mask */
326 FALSE), /* pcrel_offset */
327
328 /* An absolute 16 bit branch, for which bit 10 should be set to
329 indicate that the branch is not expected to be taken. The lower
330 two bits must be zero. */
331 HOWTO (R_PPC_ADDR14_BRNTAKEN, /* type */
332 0, /* rightshift */
333 2, /* size (0 = byte, 1 = short, 2 = long) */
334 16, /* bitsize */
335 FALSE, /* pc_relative */
336 0, /* bitpos */
337 complain_overflow_bitfield, /* complain_on_overflow */
338 bfd_elf_generic_reloc, /* special_function */
339 "R_PPC_ADDR14_BRNTAKEN",/* name */
340 FALSE, /* partial_inplace */
341 0, /* src_mask */
342 0xfffc, /* dst_mask */
343 FALSE), /* pcrel_offset */
344
345 /* A relative 26 bit branch; the lower two bits must be zero. */
346 HOWTO (R_PPC_REL24, /* type */
347 0, /* rightshift */
348 2, /* size (0 = byte, 1 = short, 2 = long) */
349 26, /* bitsize */
350 TRUE, /* pc_relative */
351 0, /* bitpos */
352 complain_overflow_signed, /* complain_on_overflow */
353 bfd_elf_generic_reloc, /* special_function */
354 "R_PPC_REL24", /* name */
355 FALSE, /* partial_inplace */
356 0, /* src_mask */
357 0x3fffffc, /* dst_mask */
358 TRUE), /* pcrel_offset */
359
360 /* A relative 16 bit branch; the lower two bits must be zero. */
361 HOWTO (R_PPC_REL14, /* type */
362 0, /* rightshift */
363 2, /* size (0 = byte, 1 = short, 2 = long) */
364 16, /* bitsize */
365 TRUE, /* pc_relative */
366 0, /* bitpos */
367 complain_overflow_signed, /* complain_on_overflow */
368 bfd_elf_generic_reloc, /* special_function */
369 "R_PPC_REL14", /* name */
370 FALSE, /* partial_inplace */
371 0, /* src_mask */
372 0xfffc, /* dst_mask */
373 TRUE), /* pcrel_offset */
374
375 /* A relative 16 bit branch. Bit 10 should be set to indicate that
376 the branch is expected to be taken. The lower two bits must be
377 zero. */
378 HOWTO (R_PPC_REL14_BRTAKEN, /* type */
379 0, /* rightshift */
380 2, /* size (0 = byte, 1 = short, 2 = long) */
381 16, /* bitsize */
382 TRUE, /* pc_relative */
383 0, /* bitpos */
384 complain_overflow_signed, /* complain_on_overflow */
385 bfd_elf_generic_reloc, /* special_function */
386 "R_PPC_REL14_BRTAKEN", /* name */
387 FALSE, /* partial_inplace */
388 0, /* src_mask */
389 0xfffc, /* dst_mask */
390 TRUE), /* pcrel_offset */
391
392 /* A relative 16 bit branch. Bit 10 should be set to indicate that
393 the branch is not expected to be taken. The lower two bits must
394 be zero. */
395 HOWTO (R_PPC_REL14_BRNTAKEN, /* type */
396 0, /* rightshift */
397 2, /* size (0 = byte, 1 = short, 2 = long) */
398 16, /* bitsize */
399 TRUE, /* pc_relative */
400 0, /* bitpos */
401 complain_overflow_signed, /* complain_on_overflow */
402 bfd_elf_generic_reloc, /* special_function */
403 "R_PPC_REL14_BRNTAKEN",/* name */
404 FALSE, /* partial_inplace */
405 0, /* src_mask */
406 0xfffc, /* dst_mask */
407 TRUE), /* pcrel_offset */
408
409 /* Like R_PPC_ADDR16, but referring to the GOT table entry for the
410 symbol. */
411 HOWTO (R_PPC_GOT16, /* type */
412 0, /* rightshift */
413 1, /* size (0 = byte, 1 = short, 2 = long) */
414 16, /* bitsize */
415 FALSE, /* pc_relative */
416 0, /* bitpos */
417 complain_overflow_signed, /* complain_on_overflow */
418 bfd_elf_generic_reloc, /* special_function */
419 "R_PPC_GOT16", /* name */
420 FALSE, /* partial_inplace */
421 0, /* src_mask */
422 0xffff, /* dst_mask */
423 FALSE), /* pcrel_offset */
424
425 /* Like R_PPC_ADDR16_LO, but referring to the GOT table entry for
426 the symbol. */
427 HOWTO (R_PPC_GOT16_LO, /* type */
428 0, /* rightshift */
429 1, /* size (0 = byte, 1 = short, 2 = long) */
430 16, /* bitsize */
431 FALSE, /* pc_relative */
432 0, /* bitpos */
433 complain_overflow_dont, /* complain_on_overflow */
434 bfd_elf_generic_reloc, /* special_function */
435 "R_PPC_GOT16_LO", /* name */
436 FALSE, /* partial_inplace */
437 0, /* src_mask */
438 0xffff, /* dst_mask */
439 FALSE), /* pcrel_offset */
440
441 /* Like R_PPC_ADDR16_HI, but referring to the GOT table entry for
442 the symbol. */
443 HOWTO (R_PPC_GOT16_HI, /* type */
444 16, /* rightshift */
445 1, /* size (0 = byte, 1 = short, 2 = long) */
446 16, /* bitsize */
447 FALSE, /* pc_relative */
448 0, /* bitpos */
449 complain_overflow_bitfield, /* complain_on_overflow */
450 bfd_elf_generic_reloc, /* special_function */
451 "R_PPC_GOT16_HI", /* name */
452 FALSE, /* partial_inplace */
453 0, /* src_mask */
454 0xffff, /* dst_mask */
455 FALSE), /* pcrel_offset */
456
457 /* Like R_PPC_ADDR16_HA, but referring to the GOT table entry for
458 the symbol. */
459 HOWTO (R_PPC_GOT16_HA, /* type */
460 16, /* rightshift */
461 1, /* size (0 = byte, 1 = short, 2 = long) */
462 16, /* bitsize */
463 FALSE, /* pc_relative */
464 0, /* bitpos */
465 complain_overflow_bitfield, /* complain_on_overflow */
466 ppc_elf_addr16_ha_reloc, /* special_function */
467 "R_PPC_GOT16_HA", /* name */
468 FALSE, /* partial_inplace */
469 0, /* src_mask */
470 0xffff, /* dst_mask */
471 FALSE), /* pcrel_offset */
472
473 /* Like R_PPC_REL24, but referring to the procedure linkage table
474 entry for the symbol. */
475 HOWTO (R_PPC_PLTREL24, /* type */
476 0, /* rightshift */
477 2, /* size (0 = byte, 1 = short, 2 = long) */
478 26, /* bitsize */
479 TRUE, /* pc_relative */
480 0, /* bitpos */
481 complain_overflow_signed, /* complain_on_overflow */
482 bfd_elf_generic_reloc, /* special_function */
483 "R_PPC_PLTREL24", /* name */
484 FALSE, /* partial_inplace */
485 0, /* src_mask */
486 0x3fffffc, /* dst_mask */
487 TRUE), /* pcrel_offset */
488
489 /* This is used only by the dynamic linker. The symbol should exist
490 both in the object being run and in some shared library. The
491 dynamic linker copies the data addressed by the symbol from the
492 shared library into the object, because the object being
493 run has to have the data at some particular address. */
494 HOWTO (R_PPC_COPY, /* type */
495 0, /* rightshift */
496 2, /* size (0 = byte, 1 = short, 2 = long) */
497 32, /* bitsize */
498 FALSE, /* pc_relative */
499 0, /* bitpos */
500 complain_overflow_bitfield, /* complain_on_overflow */
501 bfd_elf_generic_reloc, /* special_function */
502 "R_PPC_COPY", /* name */
503 FALSE, /* partial_inplace */
504 0, /* src_mask */
505 0, /* dst_mask */
506 FALSE), /* pcrel_offset */
507
508 /* Like R_PPC_ADDR32, but used when setting global offset table
509 entries. */
510 HOWTO (R_PPC_GLOB_DAT, /* type */
511 0, /* rightshift */
512 2, /* size (0 = byte, 1 = short, 2 = long) */
513 32, /* bitsize */
514 FALSE, /* pc_relative */
515 0, /* bitpos */
516 complain_overflow_bitfield, /* complain_on_overflow */
517 bfd_elf_generic_reloc, /* special_function */
518 "R_PPC_GLOB_DAT", /* name */
519 FALSE, /* partial_inplace */
520 0, /* src_mask */
521 0xffffffff, /* dst_mask */
522 FALSE), /* pcrel_offset */
523
524 /* Marks a procedure linkage table entry for a symbol. */
525 HOWTO (R_PPC_JMP_SLOT, /* type */
526 0, /* rightshift */
527 2, /* size (0 = byte, 1 = short, 2 = long) */
528 32, /* bitsize */
529 FALSE, /* pc_relative */
530 0, /* bitpos */
531 complain_overflow_bitfield, /* complain_on_overflow */
532 bfd_elf_generic_reloc, /* special_function */
533 "R_PPC_JMP_SLOT", /* name */
534 FALSE, /* partial_inplace */
535 0, /* src_mask */
536 0, /* dst_mask */
537 FALSE), /* pcrel_offset */
538
539 /* Used only by the dynamic linker. When the object is run, this
540 longword is set to the load address of the object, plus the
541 addend. */
542 HOWTO (R_PPC_RELATIVE, /* type */
543 0, /* rightshift */
544 2, /* size (0 = byte, 1 = short, 2 = long) */
545 32, /* bitsize */
546 FALSE, /* pc_relative */
547 0, /* bitpos */
548 complain_overflow_bitfield, /* complain_on_overflow */
549 bfd_elf_generic_reloc, /* special_function */
550 "R_PPC_RELATIVE", /* name */
551 FALSE, /* partial_inplace */
552 0, /* src_mask */
553 0xffffffff, /* dst_mask */
554 FALSE), /* pcrel_offset */
555
556 /* Like R_PPC_REL24, but uses the value of the symbol within the
557 object rather than the final value. Normally used for
558 _GLOBAL_OFFSET_TABLE_. */
559 HOWTO (R_PPC_LOCAL24PC, /* type */
560 0, /* rightshift */
561 2, /* size (0 = byte, 1 = short, 2 = long) */
562 26, /* bitsize */
563 TRUE, /* pc_relative */
564 0, /* bitpos */
565 complain_overflow_signed, /* complain_on_overflow */
566 bfd_elf_generic_reloc, /* special_function */
567 "R_PPC_LOCAL24PC", /* name */
568 FALSE, /* partial_inplace */
569 0, /* src_mask */
570 0x3fffffc, /* dst_mask */
571 TRUE), /* pcrel_offset */
572
573 /* Like R_PPC_ADDR32, but may be unaligned. */
574 HOWTO (R_PPC_UADDR32, /* type */
575 0, /* rightshift */
576 2, /* size (0 = byte, 1 = short, 2 = long) */
577 32, /* bitsize */
578 FALSE, /* pc_relative */
579 0, /* bitpos */
580 complain_overflow_bitfield, /* complain_on_overflow */
581 bfd_elf_generic_reloc, /* special_function */
582 "R_PPC_UADDR32", /* name */
583 FALSE, /* partial_inplace */
584 0, /* src_mask */
585 0xffffffff, /* dst_mask */
586 FALSE), /* pcrel_offset */
587
588 /* Like R_PPC_ADDR16, but may be unaligned. */
589 HOWTO (R_PPC_UADDR16, /* type */
590 0, /* rightshift */
591 1, /* size (0 = byte, 1 = short, 2 = long) */
592 16, /* bitsize */
593 FALSE, /* pc_relative */
594 0, /* bitpos */
595 complain_overflow_bitfield, /* complain_on_overflow */
596 bfd_elf_generic_reloc, /* special_function */
597 "R_PPC_UADDR16", /* name */
598 FALSE, /* partial_inplace */
599 0, /* src_mask */
600 0xffff, /* dst_mask */
601 FALSE), /* pcrel_offset */
602
603 /* 32-bit PC relative */
604 HOWTO (R_PPC_REL32, /* type */
605 0, /* rightshift */
606 2, /* size (0 = byte, 1 = short, 2 = long) */
607 32, /* bitsize */
608 TRUE, /* pc_relative */
609 0, /* bitpos */
610 complain_overflow_bitfield, /* complain_on_overflow */
611 bfd_elf_generic_reloc, /* special_function */
612 "R_PPC_REL32", /* name */
613 FALSE, /* partial_inplace */
614 0, /* src_mask */
615 0xffffffff, /* dst_mask */
616 TRUE), /* pcrel_offset */
617
618 /* 32-bit relocation to the symbol's procedure linkage table.
619 FIXME: not supported. */
620 HOWTO (R_PPC_PLT32, /* type */
621 0, /* rightshift */
622 2, /* size (0 = byte, 1 = short, 2 = long) */
623 32, /* bitsize */
624 FALSE, /* pc_relative */
625 0, /* bitpos */
626 complain_overflow_bitfield, /* complain_on_overflow */
627 bfd_elf_generic_reloc, /* special_function */
628 "R_PPC_PLT32", /* name */
629 FALSE, /* partial_inplace */
630 0, /* src_mask */
631 0, /* dst_mask */
632 FALSE), /* pcrel_offset */
633
634 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
635 FIXME: not supported. */
636 HOWTO (R_PPC_PLTREL32, /* type */
637 0, /* rightshift */
638 2, /* size (0 = byte, 1 = short, 2 = long) */
639 32, /* bitsize */
640 TRUE, /* pc_relative */
641 0, /* bitpos */
642 complain_overflow_bitfield, /* complain_on_overflow */
643 bfd_elf_generic_reloc, /* special_function */
644 "R_PPC_PLTREL32", /* name */
645 FALSE, /* partial_inplace */
646 0, /* src_mask */
647 0, /* dst_mask */
648 TRUE), /* pcrel_offset */
649
650 /* Like R_PPC_ADDR16_LO, but referring to the PLT table entry for
651 the symbol. */
652 HOWTO (R_PPC_PLT16_LO, /* type */
653 0, /* rightshift */
654 1, /* size (0 = byte, 1 = short, 2 = long) */
655 16, /* bitsize */
656 FALSE, /* pc_relative */
657 0, /* bitpos */
658 complain_overflow_dont, /* complain_on_overflow */
659 bfd_elf_generic_reloc, /* special_function */
660 "R_PPC_PLT16_LO", /* name */
661 FALSE, /* partial_inplace */
662 0, /* src_mask */
663 0xffff, /* dst_mask */
664 FALSE), /* pcrel_offset */
665
666 /* Like R_PPC_ADDR16_HI, but referring to the PLT table entry for
667 the symbol. */
668 HOWTO (R_PPC_PLT16_HI, /* type */
669 16, /* rightshift */
670 1, /* size (0 = byte, 1 = short, 2 = long) */
671 16, /* bitsize */
672 FALSE, /* pc_relative */
673 0, /* bitpos */
674 complain_overflow_bitfield, /* complain_on_overflow */
675 bfd_elf_generic_reloc, /* special_function */
676 "R_PPC_PLT16_HI", /* name */
677 FALSE, /* partial_inplace */
678 0, /* src_mask */
679 0xffff, /* dst_mask */
680 FALSE), /* pcrel_offset */
681
682 /* Like R_PPC_ADDR16_HA, but referring to the PLT table entry for
683 the symbol. */
684 HOWTO (R_PPC_PLT16_HA, /* type */
685 16, /* rightshift */
686 1, /* size (0 = byte, 1 = short, 2 = long) */
687 16, /* bitsize */
688 FALSE, /* pc_relative */
689 0, /* bitpos */
690 complain_overflow_bitfield, /* complain_on_overflow */
691 ppc_elf_addr16_ha_reloc, /* special_function */
692 "R_PPC_PLT16_HA", /* name */
693 FALSE, /* partial_inplace */
694 0, /* src_mask */
695 0xffff, /* dst_mask */
696 FALSE), /* pcrel_offset */
697
698 /* A sign-extended 16 bit value relative to _SDA_BASE_, for use with
699 small data items. */
700 HOWTO (R_PPC_SDAREL16, /* type */
701 0, /* rightshift */
702 1, /* size (0 = byte, 1 = short, 2 = long) */
703 16, /* bitsize */
704 FALSE, /* pc_relative */
705 0, /* bitpos */
706 complain_overflow_signed, /* complain_on_overflow */
707 bfd_elf_generic_reloc, /* special_function */
708 "R_PPC_SDAREL16", /* name */
709 FALSE, /* partial_inplace */
710 0, /* src_mask */
711 0xffff, /* dst_mask */
712 FALSE), /* pcrel_offset */
713
714 /* 16-bit section relative relocation. */
715 HOWTO (R_PPC_SECTOFF, /* type */
716 0, /* rightshift */
717 1, /* size (0 = byte, 1 = short, 2 = long) */
718 16, /* bitsize */
719 FALSE, /* pc_relative */
720 0, /* bitpos */
721 complain_overflow_bitfield, /* complain_on_overflow */
722 bfd_elf_generic_reloc, /* special_function */
723 "R_PPC_SECTOFF", /* name */
724 FALSE, /* partial_inplace */
725 0, /* src_mask */
726 0xffff, /* dst_mask */
727 FALSE), /* pcrel_offset */
728
729 /* 16-bit lower half section relative relocation. */
730 HOWTO (R_PPC_SECTOFF_LO, /* type */
731 0, /* rightshift */
732 1, /* size (0 = byte, 1 = short, 2 = long) */
733 16, /* bitsize */
734 FALSE, /* pc_relative */
735 0, /* bitpos */
736 complain_overflow_dont, /* complain_on_overflow */
737 bfd_elf_generic_reloc, /* special_function */
738 "R_PPC_SECTOFF_LO", /* name */
739 FALSE, /* partial_inplace */
740 0, /* src_mask */
741 0xffff, /* dst_mask */
742 FALSE), /* pcrel_offset */
743
744 /* 16-bit upper half section relative relocation. */
745 HOWTO (R_PPC_SECTOFF_HI, /* type */
746 16, /* rightshift */
747 1, /* size (0 = byte, 1 = short, 2 = long) */
748 16, /* bitsize */
749 FALSE, /* pc_relative */
750 0, /* bitpos */
751 complain_overflow_bitfield, /* complain_on_overflow */
752 bfd_elf_generic_reloc, /* special_function */
753 "R_PPC_SECTOFF_HI", /* name */
754 FALSE, /* partial_inplace */
755 0, /* src_mask */
756 0xffff, /* dst_mask */
757 FALSE), /* pcrel_offset */
758
759 /* 16-bit upper half adjusted section relative relocation. */
760 HOWTO (R_PPC_SECTOFF_HA, /* type */
761 16, /* rightshift */
762 1, /* size (0 = byte, 1 = short, 2 = long) */
763 16, /* bitsize */
764 FALSE, /* pc_relative */
765 0, /* bitpos */
766 complain_overflow_bitfield, /* complain_on_overflow */
767 ppc_elf_addr16_ha_reloc, /* special_function */
768 "R_PPC_SECTOFF_HA", /* name */
769 FALSE, /* partial_inplace */
770 0, /* src_mask */
771 0xffff, /* dst_mask */
772 FALSE), /* pcrel_offset */
773
774 /* Marker relocs for TLS. */
775 HOWTO (R_PPC_TLS,
776 0, /* rightshift */
777 2, /* size (0 = byte, 1 = short, 2 = long) */
778 32, /* bitsize */
779 FALSE, /* pc_relative */
780 0, /* bitpos */
781 complain_overflow_dont, /* complain_on_overflow */
782 bfd_elf_generic_reloc, /* special_function */
783 "R_PPC_TLS", /* name */
784 FALSE, /* partial_inplace */
785 0, /* src_mask */
786 0, /* dst_mask */
787 FALSE), /* pcrel_offset */
788
789 HOWTO (R_PPC_TLSGD,
790 0, /* rightshift */
791 2, /* size (0 = byte, 1 = short, 2 = long) */
792 32, /* bitsize */
793 FALSE, /* pc_relative */
794 0, /* bitpos */
795 complain_overflow_dont, /* complain_on_overflow */
796 bfd_elf_generic_reloc, /* special_function */
797 "R_PPC_TLSGD", /* name */
798 FALSE, /* partial_inplace */
799 0, /* src_mask */
800 0, /* dst_mask */
801 FALSE), /* pcrel_offset */
802
803 HOWTO (R_PPC_TLSLD,
804 0, /* rightshift */
805 2, /* size (0 = byte, 1 = short, 2 = long) */
806 32, /* bitsize */
807 FALSE, /* pc_relative */
808 0, /* bitpos */
809 complain_overflow_dont, /* complain_on_overflow */
810 bfd_elf_generic_reloc, /* special_function */
811 "R_PPC_TLSLD", /* name */
812 FALSE, /* partial_inplace */
813 0, /* src_mask */
814 0, /* dst_mask */
815 FALSE), /* pcrel_offset */
816
817 /* Computes the load module index of the load module that contains the
818 definition of its TLS sym. */
819 HOWTO (R_PPC_DTPMOD32,
820 0, /* rightshift */
821 2, /* size (0 = byte, 1 = short, 2 = long) */
822 32, /* bitsize */
823 FALSE, /* pc_relative */
824 0, /* bitpos */
825 complain_overflow_dont, /* complain_on_overflow */
826 ppc_elf_unhandled_reloc, /* special_function */
827 "R_PPC_DTPMOD32", /* name */
828 FALSE, /* partial_inplace */
829 0, /* src_mask */
830 0xffffffff, /* dst_mask */
831 FALSE), /* pcrel_offset */
832
833 /* Computes a dtv-relative displacement, the difference between the value
834 of sym+add and the base address of the thread-local storage block that
835 contains the definition of sym, minus 0x8000. */
836 HOWTO (R_PPC_DTPREL32,
837 0, /* rightshift */
838 2, /* size (0 = byte, 1 = short, 2 = long) */
839 32, /* bitsize */
840 FALSE, /* pc_relative */
841 0, /* bitpos */
842 complain_overflow_dont, /* complain_on_overflow */
843 ppc_elf_unhandled_reloc, /* special_function */
844 "R_PPC_DTPREL32", /* name */
845 FALSE, /* partial_inplace */
846 0, /* src_mask */
847 0xffffffff, /* dst_mask */
848 FALSE), /* pcrel_offset */
849
850 /* A 16 bit dtprel reloc. */
851 HOWTO (R_PPC_DTPREL16,
852 0, /* rightshift */
853 1, /* size (0 = byte, 1 = short, 2 = long) */
854 16, /* bitsize */
855 FALSE, /* pc_relative */
856 0, /* bitpos */
857 complain_overflow_signed, /* complain_on_overflow */
858 ppc_elf_unhandled_reloc, /* special_function */
859 "R_PPC_DTPREL16", /* name */
860 FALSE, /* partial_inplace */
861 0, /* src_mask */
862 0xffff, /* dst_mask */
863 FALSE), /* pcrel_offset */
864
865 /* Like DTPREL16, but no overflow. */
866 HOWTO (R_PPC_DTPREL16_LO,
867 0, /* rightshift */
868 1, /* size (0 = byte, 1 = short, 2 = long) */
869 16, /* bitsize */
870 FALSE, /* pc_relative */
871 0, /* bitpos */
872 complain_overflow_dont, /* complain_on_overflow */
873 ppc_elf_unhandled_reloc, /* special_function */
874 "R_PPC_DTPREL16_LO", /* name */
875 FALSE, /* partial_inplace */
876 0, /* src_mask */
877 0xffff, /* dst_mask */
878 FALSE), /* pcrel_offset */
879
880 /* Like DTPREL16_LO, but next higher group of 16 bits. */
881 HOWTO (R_PPC_DTPREL16_HI,
882 16, /* rightshift */
883 1, /* size (0 = byte, 1 = short, 2 = long) */
884 16, /* bitsize */
885 FALSE, /* pc_relative */
886 0, /* bitpos */
887 complain_overflow_dont, /* complain_on_overflow */
888 ppc_elf_unhandled_reloc, /* special_function */
889 "R_PPC_DTPREL16_HI", /* name */
890 FALSE, /* partial_inplace */
891 0, /* src_mask */
892 0xffff, /* dst_mask */
893 FALSE), /* pcrel_offset */
894
895 /* Like DTPREL16_HI, but adjust for low 16 bits. */
896 HOWTO (R_PPC_DTPREL16_HA,
897 16, /* rightshift */
898 1, /* size (0 = byte, 1 = short, 2 = long) */
899 16, /* bitsize */
900 FALSE, /* pc_relative */
901 0, /* bitpos */
902 complain_overflow_dont, /* complain_on_overflow */
903 ppc_elf_unhandled_reloc, /* special_function */
904 "R_PPC_DTPREL16_HA", /* name */
905 FALSE, /* partial_inplace */
906 0, /* src_mask */
907 0xffff, /* dst_mask */
908 FALSE), /* pcrel_offset */
909
910 /* Computes a tp-relative displacement, the difference between the value of
911 sym+add and the value of the thread pointer (r13). */
912 HOWTO (R_PPC_TPREL32,
913 0, /* rightshift */
914 2, /* size (0 = byte, 1 = short, 2 = long) */
915 32, /* bitsize */
916 FALSE, /* pc_relative */
917 0, /* bitpos */
918 complain_overflow_dont, /* complain_on_overflow */
919 ppc_elf_unhandled_reloc, /* special_function */
920 "R_PPC_TPREL32", /* name */
921 FALSE, /* partial_inplace */
922 0, /* src_mask */
923 0xffffffff, /* dst_mask */
924 FALSE), /* pcrel_offset */
925
926 /* A 16 bit tprel reloc. */
927 HOWTO (R_PPC_TPREL16,
928 0, /* rightshift */
929 1, /* size (0 = byte, 1 = short, 2 = long) */
930 16, /* bitsize */
931 FALSE, /* pc_relative */
932 0, /* bitpos */
933 complain_overflow_signed, /* complain_on_overflow */
934 ppc_elf_unhandled_reloc, /* special_function */
935 "R_PPC_TPREL16", /* name */
936 FALSE, /* partial_inplace */
937 0, /* src_mask */
938 0xffff, /* dst_mask */
939 FALSE), /* pcrel_offset */
940
941 /* Like TPREL16, but no overflow. */
942 HOWTO (R_PPC_TPREL16_LO,
943 0, /* rightshift */
944 1, /* size (0 = byte, 1 = short, 2 = long) */
945 16, /* bitsize */
946 FALSE, /* pc_relative */
947 0, /* bitpos */
948 complain_overflow_dont, /* complain_on_overflow */
949 ppc_elf_unhandled_reloc, /* special_function */
950 "R_PPC_TPREL16_LO", /* name */
951 FALSE, /* partial_inplace */
952 0, /* src_mask */
953 0xffff, /* dst_mask */
954 FALSE), /* pcrel_offset */
955
956 /* Like TPREL16_LO, but next higher group of 16 bits. */
957 HOWTO (R_PPC_TPREL16_HI,
958 16, /* rightshift */
959 1, /* size (0 = byte, 1 = short, 2 = long) */
960 16, /* bitsize */
961 FALSE, /* pc_relative */
962 0, /* bitpos */
963 complain_overflow_dont, /* complain_on_overflow */
964 ppc_elf_unhandled_reloc, /* special_function */
965 "R_PPC_TPREL16_HI", /* name */
966 FALSE, /* partial_inplace */
967 0, /* src_mask */
968 0xffff, /* dst_mask */
969 FALSE), /* pcrel_offset */
970
971 /* Like TPREL16_HI, but adjust for low 16 bits. */
972 HOWTO (R_PPC_TPREL16_HA,
973 16, /* rightshift */
974 1, /* size (0 = byte, 1 = short, 2 = long) */
975 16, /* bitsize */
976 FALSE, /* pc_relative */
977 0, /* bitpos */
978 complain_overflow_dont, /* complain_on_overflow */
979 ppc_elf_unhandled_reloc, /* special_function */
980 "R_PPC_TPREL16_HA", /* name */
981 FALSE, /* partial_inplace */
982 0, /* src_mask */
983 0xffff, /* dst_mask */
984 FALSE), /* pcrel_offset */
985
986 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
987 with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
988 to the first entry. */
989 HOWTO (R_PPC_GOT_TLSGD16,
990 0, /* rightshift */
991 1, /* size (0 = byte, 1 = short, 2 = long) */
992 16, /* bitsize */
993 FALSE, /* pc_relative */
994 0, /* bitpos */
995 complain_overflow_signed, /* complain_on_overflow */
996 ppc_elf_unhandled_reloc, /* special_function */
997 "R_PPC_GOT_TLSGD16", /* name */
998 FALSE, /* partial_inplace */
999 0, /* src_mask */
1000 0xffff, /* dst_mask */
1001 FALSE), /* pcrel_offset */
1002
1003 /* Like GOT_TLSGD16, but no overflow. */
1004 HOWTO (R_PPC_GOT_TLSGD16_LO,
1005 0, /* rightshift */
1006 1, /* size (0 = byte, 1 = short, 2 = long) */
1007 16, /* bitsize */
1008 FALSE, /* pc_relative */
1009 0, /* bitpos */
1010 complain_overflow_dont, /* complain_on_overflow */
1011 ppc_elf_unhandled_reloc, /* special_function */
1012 "R_PPC_GOT_TLSGD16_LO", /* name */
1013 FALSE, /* partial_inplace */
1014 0, /* src_mask */
1015 0xffff, /* dst_mask */
1016 FALSE), /* pcrel_offset */
1017
1018 /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
1019 HOWTO (R_PPC_GOT_TLSGD16_HI,
1020 16, /* rightshift */
1021 1, /* size (0 = byte, 1 = short, 2 = long) */
1022 16, /* bitsize */
1023 FALSE, /* pc_relative */
1024 0, /* bitpos */
1025 complain_overflow_dont, /* complain_on_overflow */
1026 ppc_elf_unhandled_reloc, /* special_function */
1027 "R_PPC_GOT_TLSGD16_HI", /* name */
1028 FALSE, /* partial_inplace */
1029 0, /* src_mask */
1030 0xffff, /* dst_mask */
1031 FALSE), /* pcrel_offset */
1032
1033 /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
1034 HOWTO (R_PPC_GOT_TLSGD16_HA,
1035 16, /* rightshift */
1036 1, /* size (0 = byte, 1 = short, 2 = long) */
1037 16, /* bitsize */
1038 FALSE, /* pc_relative */
1039 0, /* bitpos */
1040 complain_overflow_dont, /* complain_on_overflow */
1041 ppc_elf_unhandled_reloc, /* special_function */
1042 "R_PPC_GOT_TLSGD16_HA", /* name */
1043 FALSE, /* partial_inplace */
1044 0, /* src_mask */
1045 0xffff, /* dst_mask */
1046 FALSE), /* pcrel_offset */
1047
1048 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1049 with values (sym+add)@dtpmod and zero, and computes the offset to the
1050 first entry. */
1051 HOWTO (R_PPC_GOT_TLSLD16,
1052 0, /* rightshift */
1053 1, /* size (0 = byte, 1 = short, 2 = long) */
1054 16, /* bitsize */
1055 FALSE, /* pc_relative */
1056 0, /* bitpos */
1057 complain_overflow_signed, /* complain_on_overflow */
1058 ppc_elf_unhandled_reloc, /* special_function */
1059 "R_PPC_GOT_TLSLD16", /* name */
1060 FALSE, /* partial_inplace */
1061 0, /* src_mask */
1062 0xffff, /* dst_mask */
1063 FALSE), /* pcrel_offset */
1064
1065 /* Like GOT_TLSLD16, but no overflow. */
1066 HOWTO (R_PPC_GOT_TLSLD16_LO,
1067 0, /* rightshift */
1068 1, /* size (0 = byte, 1 = short, 2 = long) */
1069 16, /* bitsize */
1070 FALSE, /* pc_relative */
1071 0, /* bitpos */
1072 complain_overflow_dont, /* complain_on_overflow */
1073 ppc_elf_unhandled_reloc, /* special_function */
1074 "R_PPC_GOT_TLSLD16_LO", /* name */
1075 FALSE, /* partial_inplace */
1076 0, /* src_mask */
1077 0xffff, /* dst_mask */
1078 FALSE), /* pcrel_offset */
1079
1080 /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
1081 HOWTO (R_PPC_GOT_TLSLD16_HI,
1082 16, /* rightshift */
1083 1, /* size (0 = byte, 1 = short, 2 = long) */
1084 16, /* bitsize */
1085 FALSE, /* pc_relative */
1086 0, /* bitpos */
1087 complain_overflow_dont, /* complain_on_overflow */
1088 ppc_elf_unhandled_reloc, /* special_function */
1089 "R_PPC_GOT_TLSLD16_HI", /* name */
1090 FALSE, /* partial_inplace */
1091 0, /* src_mask */
1092 0xffff, /* dst_mask */
1093 FALSE), /* pcrel_offset */
1094
1095 /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
1096 HOWTO (R_PPC_GOT_TLSLD16_HA,
1097 16, /* rightshift */
1098 1, /* size (0 = byte, 1 = short, 2 = long) */
1099 16, /* bitsize */
1100 FALSE, /* pc_relative */
1101 0, /* bitpos */
1102 complain_overflow_dont, /* complain_on_overflow */
1103 ppc_elf_unhandled_reloc, /* special_function */
1104 "R_PPC_GOT_TLSLD16_HA", /* name */
1105 FALSE, /* partial_inplace */
1106 0, /* src_mask */
1107 0xffff, /* dst_mask */
1108 FALSE), /* pcrel_offset */
1109
1110 /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
1111 the offset to the entry. */
1112 HOWTO (R_PPC_GOT_DTPREL16,
1113 0, /* rightshift */
1114 1, /* size (0 = byte, 1 = short, 2 = long) */
1115 16, /* bitsize */
1116 FALSE, /* pc_relative */
1117 0, /* bitpos */
1118 complain_overflow_signed, /* complain_on_overflow */
1119 ppc_elf_unhandled_reloc, /* special_function */
1120 "R_PPC_GOT_DTPREL16", /* name */
1121 FALSE, /* partial_inplace */
1122 0, /* src_mask */
1123 0xffff, /* dst_mask */
1124 FALSE), /* pcrel_offset */
1125
1126 /* Like GOT_DTPREL16, but no overflow. */
1127 HOWTO (R_PPC_GOT_DTPREL16_LO,
1128 0, /* rightshift */
1129 1, /* size (0 = byte, 1 = short, 2 = long) */
1130 16, /* bitsize */
1131 FALSE, /* pc_relative */
1132 0, /* bitpos */
1133 complain_overflow_dont, /* complain_on_overflow */
1134 ppc_elf_unhandled_reloc, /* special_function */
1135 "R_PPC_GOT_DTPREL16_LO", /* name */
1136 FALSE, /* partial_inplace */
1137 0, /* src_mask */
1138 0xffff, /* dst_mask */
1139 FALSE), /* pcrel_offset */
1140
1141 /* Like GOT_DTPREL16_LO, but next higher group of 16 bits. */
1142 HOWTO (R_PPC_GOT_DTPREL16_HI,
1143 16, /* rightshift */
1144 1, /* size (0 = byte, 1 = short, 2 = long) */
1145 16, /* bitsize */
1146 FALSE, /* pc_relative */
1147 0, /* bitpos */
1148 complain_overflow_dont, /* complain_on_overflow */
1149 ppc_elf_unhandled_reloc, /* special_function */
1150 "R_PPC_GOT_DTPREL16_HI", /* name */
1151 FALSE, /* partial_inplace */
1152 0, /* src_mask */
1153 0xffff, /* dst_mask */
1154 FALSE), /* pcrel_offset */
1155
1156 /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
1157 HOWTO (R_PPC_GOT_DTPREL16_HA,
1158 16, /* rightshift */
1159 1, /* size (0 = byte, 1 = short, 2 = long) */
1160 16, /* bitsize */
1161 FALSE, /* pc_relative */
1162 0, /* bitpos */
1163 complain_overflow_dont, /* complain_on_overflow */
1164 ppc_elf_unhandled_reloc, /* special_function */
1165 "R_PPC_GOT_DTPREL16_HA", /* name */
1166 FALSE, /* partial_inplace */
1167 0, /* src_mask */
1168 0xffff, /* dst_mask */
1169 FALSE), /* pcrel_offset */
1170
1171 /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
1172 offset to the entry. */
1173 HOWTO (R_PPC_GOT_TPREL16,
1174 0, /* rightshift */
1175 1, /* size (0 = byte, 1 = short, 2 = long) */
1176 16, /* bitsize */
1177 FALSE, /* pc_relative */
1178 0, /* bitpos */
1179 complain_overflow_signed, /* complain_on_overflow */
1180 ppc_elf_unhandled_reloc, /* special_function */
1181 "R_PPC_GOT_TPREL16", /* name */
1182 FALSE, /* partial_inplace */
1183 0, /* src_mask */
1184 0xffff, /* dst_mask */
1185 FALSE), /* pcrel_offset */
1186
1187 /* Like GOT_TPREL16, but no overflow. */
1188 HOWTO (R_PPC_GOT_TPREL16_LO,
1189 0, /* rightshift */
1190 1, /* size (0 = byte, 1 = short, 2 = long) */
1191 16, /* bitsize */
1192 FALSE, /* pc_relative */
1193 0, /* bitpos */
1194 complain_overflow_dont, /* complain_on_overflow */
1195 ppc_elf_unhandled_reloc, /* special_function */
1196 "R_PPC_GOT_TPREL16_LO", /* name */
1197 FALSE, /* partial_inplace */
1198 0, /* src_mask */
1199 0xffff, /* dst_mask */
1200 FALSE), /* pcrel_offset */
1201
1202 /* Like GOT_TPREL16_LO, but next higher group of 16 bits. */
1203 HOWTO (R_PPC_GOT_TPREL16_HI,
1204 16, /* rightshift */
1205 1, /* size (0 = byte, 1 = short, 2 = long) */
1206 16, /* bitsize */
1207 FALSE, /* pc_relative */
1208 0, /* bitpos */
1209 complain_overflow_dont, /* complain_on_overflow */
1210 ppc_elf_unhandled_reloc, /* special_function */
1211 "R_PPC_GOT_TPREL16_HI", /* name */
1212 FALSE, /* partial_inplace */
1213 0, /* src_mask */
1214 0xffff, /* dst_mask */
1215 FALSE), /* pcrel_offset */
1216
1217 /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
1218 HOWTO (R_PPC_GOT_TPREL16_HA,
1219 16, /* rightshift */
1220 1, /* size (0 = byte, 1 = short, 2 = long) */
1221 16, /* bitsize */
1222 FALSE, /* pc_relative */
1223 0, /* bitpos */
1224 complain_overflow_dont, /* complain_on_overflow */
1225 ppc_elf_unhandled_reloc, /* special_function */
1226 "R_PPC_GOT_TPREL16_HA", /* name */
1227 FALSE, /* partial_inplace */
1228 0, /* src_mask */
1229 0xffff, /* dst_mask */
1230 FALSE), /* pcrel_offset */
1231
1232 /* The remaining relocs are from the Embedded ELF ABI, and are not
1233 in the SVR4 ELF ABI. */
1234
1235 /* 32 bit value resulting from the addend minus the symbol. */
1236 HOWTO (R_PPC_EMB_NADDR32, /* type */
1237 0, /* rightshift */
1238 2, /* size (0 = byte, 1 = short, 2 = long) */
1239 32, /* bitsize */
1240 FALSE, /* pc_relative */
1241 0, /* bitpos */
1242 complain_overflow_bitfield, /* complain_on_overflow */
1243 bfd_elf_generic_reloc, /* special_function */
1244 "R_PPC_EMB_NADDR32", /* name */
1245 FALSE, /* partial_inplace */
1246 0, /* src_mask */
1247 0xffffffff, /* dst_mask */
1248 FALSE), /* pcrel_offset */
1249
1250 /* 16 bit value resulting from the addend minus the symbol. */
1251 HOWTO (R_PPC_EMB_NADDR16, /* type */
1252 0, /* rightshift */
1253 1, /* size (0 = byte, 1 = short, 2 = long) */
1254 16, /* bitsize */
1255 FALSE, /* pc_relative */
1256 0, /* bitpos */
1257 complain_overflow_bitfield, /* complain_on_overflow */
1258 bfd_elf_generic_reloc, /* special_function */
1259 "R_PPC_EMB_NADDR16", /* name */
1260 FALSE, /* partial_inplace */
1261 0, /* src_mask */
1262 0xffff, /* dst_mask */
1263 FALSE), /* pcrel_offset */
1264
1265 /* 16 bit value resulting from the addend minus the symbol. */
1266 HOWTO (R_PPC_EMB_NADDR16_LO, /* type */
1267 0, /* rightshift */
1268 1, /* size (0 = byte, 1 = short, 2 = long) */
1269 16, /* bitsize */
1270 FALSE, /* pc_relative */
1271 0, /* bitpos */
1272 complain_overflow_dont,/* complain_on_overflow */
1273 bfd_elf_generic_reloc, /* special_function */
1274 "R_PPC_EMB_ADDR16_LO", /* name */
1275 FALSE, /* partial_inplace */
1276 0, /* src_mask */
1277 0xffff, /* dst_mask */
1278 FALSE), /* pcrel_offset */
1279
1280 /* The high order 16 bits of the addend minus the symbol. */
1281 HOWTO (R_PPC_EMB_NADDR16_HI, /* type */
1282 16, /* rightshift */
1283 1, /* size (0 = byte, 1 = short, 2 = long) */
1284 16, /* bitsize */
1285 FALSE, /* pc_relative */
1286 0, /* bitpos */
1287 complain_overflow_dont, /* complain_on_overflow */
1288 bfd_elf_generic_reloc, /* special_function */
1289 "R_PPC_EMB_NADDR16_HI", /* name */
1290 FALSE, /* partial_inplace */
1291 0, /* src_mask */
1292 0xffff, /* dst_mask */
1293 FALSE), /* pcrel_offset */
1294
1295 /* The high order 16 bits of the result of the addend minus the address,
1296 plus 1 if the contents of the low 16 bits, treated as a signed number,
1297 is negative. */
1298 HOWTO (R_PPC_EMB_NADDR16_HA, /* type */
1299 16, /* rightshift */
1300 1, /* size (0 = byte, 1 = short, 2 = long) */
1301 16, /* bitsize */
1302 FALSE, /* pc_relative */
1303 0, /* bitpos */
1304 complain_overflow_dont, /* complain_on_overflow */
1305 ppc_elf_addr16_ha_reloc, /* special_function */
1306 "R_PPC_EMB_NADDR16_HA", /* name */
1307 FALSE, /* partial_inplace */
1308 0, /* src_mask */
1309 0xffff, /* dst_mask */
1310 FALSE), /* pcrel_offset */
1311
1312 /* 16 bit value resulting from allocating a 4 byte word to hold an
1313 address in the .sdata section, and returning the offset from
1314 _SDA_BASE_ for that relocation. */
1315 HOWTO (R_PPC_EMB_SDAI16, /* type */
1316 0, /* rightshift */
1317 1, /* size (0 = byte, 1 = short, 2 = long) */
1318 16, /* bitsize */
1319 FALSE, /* pc_relative */
1320 0, /* bitpos */
1321 complain_overflow_signed, /* complain_on_overflow */
1322 bfd_elf_generic_reloc, /* special_function */
1323 "R_PPC_EMB_SDAI16", /* name */
1324 FALSE, /* partial_inplace */
1325 0, /* src_mask */
1326 0xffff, /* dst_mask */
1327 FALSE), /* pcrel_offset */
1328
1329 /* 16 bit value resulting from allocating a 4 byte word to hold an
1330 address in the .sdata2 section, and returning the offset from
1331 _SDA2_BASE_ for that relocation. */
1332 HOWTO (R_PPC_EMB_SDA2I16, /* type */
1333 0, /* rightshift */
1334 1, /* size (0 = byte, 1 = short, 2 = long) */
1335 16, /* bitsize */
1336 FALSE, /* pc_relative */
1337 0, /* bitpos */
1338 complain_overflow_signed, /* complain_on_overflow */
1339 bfd_elf_generic_reloc, /* special_function */
1340 "R_PPC_EMB_SDA2I16", /* name */
1341 FALSE, /* partial_inplace */
1342 0, /* src_mask */
1343 0xffff, /* dst_mask */
1344 FALSE), /* pcrel_offset */
1345
1346 /* A sign-extended 16 bit value relative to _SDA2_BASE_, for use with
1347 small data items. */
1348 HOWTO (R_PPC_EMB_SDA2REL, /* type */
1349 0, /* rightshift */
1350 1, /* size (0 = byte, 1 = short, 2 = long) */
1351 16, /* bitsize */
1352 FALSE, /* pc_relative */
1353 0, /* bitpos */
1354 complain_overflow_signed, /* complain_on_overflow */
1355 bfd_elf_generic_reloc, /* special_function */
1356 "R_PPC_EMB_SDA2REL", /* name */
1357 FALSE, /* partial_inplace */
1358 0, /* src_mask */
1359 0xffff, /* dst_mask */
1360 FALSE), /* pcrel_offset */
1361
1362 /* Relocate against either _SDA_BASE_ or _SDA2_BASE_, filling in the 16 bit
1363 signed offset from the appropriate base, and filling in the register
1364 field with the appropriate register (0, 2, or 13). */
1365 HOWTO (R_PPC_EMB_SDA21, /* type */
1366 0, /* rightshift */
1367 2, /* size (0 = byte, 1 = short, 2 = long) */
1368 16, /* bitsize */
1369 FALSE, /* pc_relative */
1370 0, /* bitpos */
1371 complain_overflow_signed, /* complain_on_overflow */
1372 bfd_elf_generic_reloc, /* special_function */
1373 "R_PPC_EMB_SDA21", /* name */
1374 FALSE, /* partial_inplace */
1375 0, /* src_mask */
1376 0xffff, /* dst_mask */
1377 FALSE), /* pcrel_offset */
1378
1379 /* Relocation not handled: R_PPC_EMB_MRKREF */
1380 /* Relocation not handled: R_PPC_EMB_RELSEC16 */
1381 /* Relocation not handled: R_PPC_EMB_RELST_LO */
1382 /* Relocation not handled: R_PPC_EMB_RELST_HI */
1383 /* Relocation not handled: R_PPC_EMB_RELST_HA */
1384 /* Relocation not handled: R_PPC_EMB_BIT_FLD */
1385
1386 /* PC relative relocation against either _SDA_BASE_ or _SDA2_BASE_, filling
1387 in the 16 bit signed offset from the appropriate base, and filling in the
1388 register field with the appropriate register (0, 2, or 13). */
1389 HOWTO (R_PPC_EMB_RELSDA, /* type */
1390 0, /* rightshift */
1391 1, /* size (0 = byte, 1 = short, 2 = long) */
1392 16, /* bitsize */
1393 FALSE, /* pc_relative */
1394 0, /* bitpos */
1395 complain_overflow_signed, /* complain_on_overflow */
1396 bfd_elf_generic_reloc, /* special_function */
1397 "R_PPC_EMB_RELSDA", /* name */
1398 FALSE, /* partial_inplace */
1399 0, /* src_mask */
1400 0xffff, /* dst_mask */
1401 FALSE), /* pcrel_offset */
1402
1403 /* A relative 8 bit branch. */
1404 HOWTO (R_PPC_VLE_REL8, /* type */
1405 1, /* rightshift */
1406 1, /* size (0 = byte, 1 = short, 2 = long) */
1407 8, /* bitsize */
1408 TRUE, /* pc_relative */
1409 0, /* bitpos */
1410 complain_overflow_signed, /* complain_on_overflow */
1411 bfd_elf_generic_reloc, /* special_function */
1412 "R_PPC_VLE_REL8", /* name */
1413 FALSE, /* partial_inplace */
1414 0, /* src_mask */
1415 0xff, /* dst_mask */
1416 TRUE), /* pcrel_offset */
1417
1418 /* A relative 15 bit branch. */
1419 HOWTO (R_PPC_VLE_REL15, /* type */
1420 1, /* rightshift */
1421 2, /* size (0 = byte, 1 = short, 2 = long) */
1422 15, /* bitsize */
1423 TRUE, /* pc_relative */
1424 1, /* bitpos */
1425 complain_overflow_signed, /* complain_on_overflow */
1426 bfd_elf_generic_reloc, /* special_function */
1427 "R_PPC_VLE_REL15", /* name */
1428 FALSE, /* partial_inplace */
1429 0, /* src_mask */
1430 0xfe, /* dst_mask */
1431 TRUE), /* pcrel_offset */
1432
1433 /* A relative 24 bit branch. */
1434 HOWTO (R_PPC_VLE_REL24, /* type */
1435 1, /* rightshift */
1436 2, /* size (0 = byte, 1 = short, 2 = long) */
1437 24, /* bitsize */
1438 TRUE, /* pc_relative */
1439 1, /* bitpos */
1440 complain_overflow_signed, /* complain_on_overflow */
1441 bfd_elf_generic_reloc, /* special_function */
1442 "R_PPC_VLE_REL24", /* name */
1443 FALSE, /* partial_inplace */
1444 0, /* src_mask */
1445 0x1fffffe, /* dst_mask */
1446 TRUE), /* pcrel_offset */
1447
1448 /* The 16 LSBS in split16a format. */
1449 HOWTO (R_PPC_VLE_LO16A, /* type */
1450 0, /* rightshift */
1451 2, /* size (0 = byte, 1 = short, 2 = long) */
1452 32, /* bitsize */
1453 FALSE, /* pc_relative */
1454 0, /* bitpos */
1455 complain_overflow_bitfield, /* complain_on_overflow */
1456 bfd_elf_generic_reloc, /* special_function */
1457 "R_PPC_VLE_LO16A", /* name */
1458 FALSE, /* partial_inplace */
1459 0, /* src_mask */
1460 0x1f007ff, /* dst_mask */
1461 FALSE), /* pcrel_offset */
1462
1463 /* The 16 LSBS in split16d format. */
1464 HOWTO (R_PPC_VLE_LO16D, /* type */
1465 0, /* rightshift */
1466 2, /* size (0 = byte, 1 = short, 2 = long) */
1467 32, /* bitsize */
1468 FALSE, /* pc_relative */
1469 0, /* bitpos */
1470 complain_overflow_bitfield, /* complain_on_overflow */
1471 bfd_elf_generic_reloc, /* special_function */
1472 "R_PPC_VLE_LO16D", /* name */
1473 FALSE, /* partial_inplace */
1474 0, /* src_mask */
1475 0x1f07ff, /* dst_mask */
1476 FALSE), /* pcrel_offset */
1477
1478 /* Bits 16-31 split16a format. */
1479 HOWTO (R_PPC_VLE_HI16A, /* type */
1480 0, /* rightshift */
1481 2, /* size (0 = byte, 1 = short, 2 = long) */
1482 32, /* bitsize */
1483 FALSE, /* pc_relative */
1484 0, /* bitpos */
1485 complain_overflow_bitfield, /* complain_on_overflow */
1486 bfd_elf_generic_reloc, /* special_function */
1487 "R_PPC_VLE_HI16A", /* name */
1488 FALSE, /* partial_inplace */
1489 0, /* src_mask */
1490 0x1f007ff, /* dst_mask */
1491 FALSE), /* pcrel_offset */
1492
1493 /* Bits 16-31 split16d format. */
1494 HOWTO (R_PPC_VLE_HI16D, /* type */
1495 0, /* rightshift */
1496 2, /* size (0 = byte, 1 = short, 2 = long) */
1497 32, /* bitsize */
1498 FALSE, /* pc_relative */
1499 0, /* bitpos */
1500 complain_overflow_bitfield, /* complain_on_overflow */
1501 bfd_elf_generic_reloc, /* special_function */
1502 "R_PPC_VLE_HI16D", /* name */
1503 FALSE, /* partial_inplace */
1504 0, /* src_mask */
1505 0x1f07ff, /* dst_mask */
1506 FALSE), /* pcrel_offset */
1507
1508 /* Bits 16-31 (High Adjusted) in split16a format. */
1509 HOWTO (R_PPC_VLE_HA16A, /* type */
1510 0, /* rightshift */
1511 2, /* size (0 = byte, 1 = short, 2 = long) */
1512 32, /* bitsize */
1513 FALSE, /* pc_relative */
1514 0, /* bitpos */
1515 complain_overflow_bitfield, /* complain_on_overflow */
1516 bfd_elf_generic_reloc, /* special_function */
1517 "R_PPC_VLE_HA16A", /* name */
1518 FALSE, /* partial_inplace */
1519 0, /* src_mask */
1520 0x1f007ff, /* dst_mask */
1521 FALSE), /* pcrel_offset */
1522
1523 /* Bits 16-31 (High Adjusted) in split16d format. */
1524 HOWTO (R_PPC_VLE_HA16D, /* type */
1525 0, /* rightshift */
1526 2, /* size (0 = byte, 1 = short, 2 = long) */
1527 32, /* bitsize */
1528 FALSE, /* pc_relative */
1529 0, /* bitpos */
1530 complain_overflow_bitfield, /* complain_on_overflow */
1531 bfd_elf_generic_reloc, /* special_function */
1532 "R_PPC_VLE_HA16D", /* name */
1533 FALSE, /* partial_inplace */
1534 0, /* src_mask */
1535 0x1f07ff, /* dst_mask */
1536 FALSE), /* pcrel_offset */
1537
1538 /* This reloc does nothing. */
1539 HOWTO (R_PPC_VLE_SDA21, /* type */
1540 0, /* rightshift */
1541 2, /* size (0 = byte, 1 = short, 2 = long) */
1542 32, /* bitsize */
1543 FALSE, /* pc_relative */
1544 0, /* bitpos */
1545 complain_overflow_bitfield, /* complain_on_overflow */
1546 bfd_elf_generic_reloc, /* special_function */
1547 "R_PPC_VLE_SDA21", /* name */
1548 FALSE, /* partial_inplace */
1549 0, /* src_mask */
1550 0xffff, /* dst_mask */
1551 FALSE), /* pcrel_offset */
1552
1553 /* This reloc does nothing. */
1554 HOWTO (R_PPC_VLE_SDA21_LO, /* type */
1555 0, /* rightshift */
1556 2, /* size (0 = byte, 1 = short, 2 = long) */
1557 32, /* bitsize */
1558 FALSE, /* pc_relative */
1559 0, /* bitpos */
1560 complain_overflow_bitfield, /* complain_on_overflow */
1561 bfd_elf_generic_reloc, /* special_function */
1562 "R_PPC_VLE_SDA21_LO", /* name */
1563 FALSE, /* partial_inplace */
1564 0, /* src_mask */
1565 0, /* dst_mask */
1566 FALSE), /* pcrel_offset */
1567
1568 /* The 16 LSBS relative to _SDA_BASE_ in split16a format. */
1569 HOWTO (R_PPC_VLE_SDAREL_LO16A,/* type */
1570 0, /* rightshift */
1571 2, /* size (0 = byte, 1 = short, 2 = long) */
1572 32, /* bitsize */
1573 FALSE, /* pc_relative */
1574 0, /* bitpos */
1575 complain_overflow_bitfield, /* complain_on_overflow */
1576 bfd_elf_generic_reloc, /* special_function */
1577 "R_PPC_VLE_SDAREL_LO16A", /* name */
1578 FALSE, /* partial_inplace */
1579 0, /* src_mask */
1580 0x1f007ff, /* dst_mask */
1581 FALSE), /* pcrel_offset */
1582
1583 /* The 16 LSBS relative to _SDA_BASE_ in split16d format. */
1584 /* This reloc does nothing. */
1585 HOWTO (R_PPC_VLE_SDAREL_LO16D, /* type */
1586 0, /* rightshift */
1587 2, /* size (0 = byte, 1 = short, 2 = long) */
1588 32, /* bitsize */
1589 FALSE, /* pc_relative */
1590 0, /* bitpos */
1591 complain_overflow_bitfield, /* complain_on_overflow */
1592 bfd_elf_generic_reloc, /* special_function */
1593 "R_PPC_VLE_SDAREL_LO16D", /* name */
1594 FALSE, /* partial_inplace */
1595 0, /* src_mask */
1596 0x1f07ff, /* dst_mask */
1597 FALSE), /* pcrel_offset */
1598
1599 /* Bits 16-31 relative to _SDA_BASE_ in split16a format. */
1600 HOWTO (R_PPC_VLE_SDAREL_HI16A, /* type */
1601 0, /* rightshift */
1602 2, /* size (0 = byte, 1 = short, 2 = long) */
1603 32, /* bitsize */
1604 FALSE, /* pc_relative */
1605 0, /* bitpos */
1606 complain_overflow_bitfield, /* complain_on_overflow */
1607 bfd_elf_generic_reloc, /* special_function */
1608 "R_PPC_VLE_SDAREL_HI16A", /* name */
1609 FALSE, /* partial_inplace */
1610 0, /* src_mask */
1611 0x1f007ff, /* dst_mask */
1612 FALSE), /* pcrel_offset */
1613
1614 /* Bits 16-31 relative to _SDA_BASE_ in split16d format. */
1615 HOWTO (R_PPC_VLE_SDAREL_HI16D, /* type */
1616 0, /* rightshift */
1617 2, /* size (0 = byte, 1 = short, 2 = long) */
1618 32, /* bitsize */
1619 FALSE, /* pc_relative */
1620 0, /* bitpos */
1621 complain_overflow_bitfield, /* complain_on_overflow */
1622 bfd_elf_generic_reloc, /* special_function */
1623 "R_PPC_VLE_SDAREL_HI16D", /* name */
1624 FALSE, /* partial_inplace */
1625 0, /* src_mask */
1626 0x1f07ff, /* dst_mask */
1627 FALSE), /* pcrel_offset */
1628
1629 /* Bits 16-31 (HA) relative to _SDA_BASE split16a format. */
1630 HOWTO (R_PPC_VLE_SDAREL_HA16A, /* type */
1631 0, /* rightshift */
1632 2, /* size (0 = byte, 1 = short, 2 = long) */
1633 32, /* bitsize */
1634 FALSE, /* pc_relative */
1635 0, /* bitpos */
1636 complain_overflow_bitfield, /* complain_on_overflow */
1637 bfd_elf_generic_reloc, /* special_function */
1638 "R_PPC_VLE_SDAREL_HA16A", /* name */
1639 FALSE, /* partial_inplace */
1640 0, /* src_mask */
1641 0x1f007ff, /* dst_mask */
1642 FALSE), /* pcrel_offset */
1643
1644 /* Bits 16-31 (HA) relative to _SDA_BASE split16d format. */
1645 HOWTO (R_PPC_VLE_SDAREL_HA16D, /* type */
1646 0, /* rightshift */
1647 2, /* size (0 = byte, 1 = short, 2 = long) */
1648 32, /* bitsize */
1649 FALSE, /* pc_relative */
1650 0, /* bitpos */
1651 complain_overflow_bitfield, /* complain_on_overflow */
1652 bfd_elf_generic_reloc, /* special_function */
1653 "R_PPC_VLE_SDAREL_HA16D", /* name */
1654 FALSE, /* partial_inplace */
1655 0, /* src_mask */
1656 0x1f07ff, /* dst_mask */
1657 FALSE), /* pcrel_offset */
1658
1659 HOWTO (R_PPC_IRELATIVE, /* type */
1660 0, /* rightshift */
1661 2, /* size (0 = byte, 1 = short, 2 = long) */
1662 32, /* bitsize */
1663 FALSE, /* pc_relative */
1664 0, /* bitpos */
1665 complain_overflow_bitfield, /* complain_on_overflow */
1666 bfd_elf_generic_reloc, /* special_function */
1667 "R_PPC_IRELATIVE", /* name */
1668 FALSE, /* partial_inplace */
1669 0, /* src_mask */
1670 0xffffffff, /* dst_mask */
1671 FALSE), /* pcrel_offset */
1672
1673 /* A 16 bit relative relocation. */
1674 HOWTO (R_PPC_REL16, /* type */
1675 0, /* rightshift */
1676 1, /* size (0 = byte, 1 = short, 2 = long) */
1677 16, /* bitsize */
1678 TRUE, /* pc_relative */
1679 0, /* bitpos */
1680 complain_overflow_bitfield, /* complain_on_overflow */
1681 bfd_elf_generic_reloc, /* special_function */
1682 "R_PPC_REL16", /* name */
1683 FALSE, /* partial_inplace */
1684 0, /* src_mask */
1685 0xffff, /* dst_mask */
1686 TRUE), /* pcrel_offset */
1687
1688 /* A 16 bit relative relocation without overflow. */
1689 HOWTO (R_PPC_REL16_LO, /* type */
1690 0, /* rightshift */
1691 1, /* size (0 = byte, 1 = short, 2 = long) */
1692 16, /* bitsize */
1693 TRUE, /* pc_relative */
1694 0, /* bitpos */
1695 complain_overflow_dont,/* complain_on_overflow */
1696 bfd_elf_generic_reloc, /* special_function */
1697 "R_PPC_REL16_LO", /* name */
1698 FALSE, /* partial_inplace */
1699 0, /* src_mask */
1700 0xffff, /* dst_mask */
1701 TRUE), /* pcrel_offset */
1702
1703 /* The high order 16 bits of a relative address. */
1704 HOWTO (R_PPC_REL16_HI, /* type */
1705 16, /* rightshift */
1706 1, /* size (0 = byte, 1 = short, 2 = long) */
1707 16, /* bitsize */
1708 TRUE, /* pc_relative */
1709 0, /* bitpos */
1710 complain_overflow_dont, /* complain_on_overflow */
1711 bfd_elf_generic_reloc, /* special_function */
1712 "R_PPC_REL16_HI", /* name */
1713 FALSE, /* partial_inplace */
1714 0, /* src_mask */
1715 0xffff, /* dst_mask */
1716 TRUE), /* pcrel_offset */
1717
1718 /* The high order 16 bits of a relative address, plus 1 if the contents of
1719 the low 16 bits, treated as a signed number, is negative. */
1720 HOWTO (R_PPC_REL16_HA, /* type */
1721 16, /* rightshift */
1722 1, /* size (0 = byte, 1 = short, 2 = long) */
1723 16, /* bitsize */
1724 TRUE, /* pc_relative */
1725 0, /* bitpos */
1726 complain_overflow_dont, /* complain_on_overflow */
1727 ppc_elf_addr16_ha_reloc, /* special_function */
1728 "R_PPC_REL16_HA", /* name */
1729 FALSE, /* partial_inplace */
1730 0, /* src_mask */
1731 0xffff, /* dst_mask */
1732 TRUE), /* pcrel_offset */
1733
1734 /* GNU extension to record C++ vtable hierarchy. */
1735 HOWTO (R_PPC_GNU_VTINHERIT, /* type */
1736 0, /* rightshift */
1737 0, /* size (0 = byte, 1 = short, 2 = long) */
1738 0, /* bitsize */
1739 FALSE, /* pc_relative */
1740 0, /* bitpos */
1741 complain_overflow_dont, /* complain_on_overflow */
1742 NULL, /* special_function */
1743 "R_PPC_GNU_VTINHERIT", /* name */
1744 FALSE, /* partial_inplace */
1745 0, /* src_mask */
1746 0, /* dst_mask */
1747 FALSE), /* pcrel_offset */
1748
1749 /* GNU extension to record C++ vtable member usage. */
1750 HOWTO (R_PPC_GNU_VTENTRY, /* type */
1751 0, /* rightshift */
1752 0, /* size (0 = byte, 1 = short, 2 = long) */
1753 0, /* bitsize */
1754 FALSE, /* pc_relative */
1755 0, /* bitpos */
1756 complain_overflow_dont, /* complain_on_overflow */
1757 NULL, /* special_function */
1758 "R_PPC_GNU_VTENTRY", /* name */
1759 FALSE, /* partial_inplace */
1760 0, /* src_mask */
1761 0, /* dst_mask */
1762 FALSE), /* pcrel_offset */
1763
1764 /* Phony reloc to handle AIX style TOC entries. */
1765 HOWTO (R_PPC_TOC16, /* type */
1766 0, /* rightshift */
1767 1, /* size (0 = byte, 1 = short, 2 = long) */
1768 16, /* bitsize */
1769 FALSE, /* pc_relative */
1770 0, /* bitpos */
1771 complain_overflow_signed, /* complain_on_overflow */
1772 bfd_elf_generic_reloc, /* special_function */
1773 "R_PPC_TOC16", /* name */
1774 FALSE, /* partial_inplace */
1775 0, /* src_mask */
1776 0xffff, /* dst_mask */
1777 FALSE), /* pcrel_offset */
1778 };
1779
1780 /* External 32-bit PPC structure for PRPSINFO. This structure is
1781 ABI-defined, thus we choose to use char arrays here in order to
1782 avoid dealing with different types in different architectures.
1783
1784 The PPC 32-bit structure uses int for `pr_uid' and `pr_gid' while
1785 most non-PPC architectures use `short int'.
1786
1787 This structure will ultimately be written in the corefile's note
1788 section, as the PRPSINFO. */
1789
1790 struct elf_external_ppc_linux_prpsinfo32
1791 {
1792 char pr_state; /* Numeric process state. */
1793 char pr_sname; /* Char for pr_state. */
1794 char pr_zomb; /* Zombie. */
1795 char pr_nice; /* Nice val. */
1796 char pr_flag[4]; /* Flags. */
1797 char pr_uid[4];
1798 char pr_gid[4];
1799 char pr_pid[4];
1800 char pr_ppid[4];
1801 char pr_pgrp[4];
1802 char pr_sid[4];
1803 char pr_fname[16]; /* Filename of executable. */
1804 char pr_psargs[80]; /* Initial part of arg list. */
1805 };
1806
1807 /* Helper macro to swap (properly handling endianess) things from the
1808 `elf_internal_prpsinfo' structure to the `elf_external_ppc_prpsinfo32'
1809 structure.
1810
1811 Note that FROM should be a pointer, and TO should be the explicit type. */
1812
1813 #define PPC_LINUX_PRPSINFO32_SWAP_FIELDS(abfd, from, to) \
1814 do \
1815 { \
1816 H_PUT_8 (abfd, from->pr_state, &to.pr_state); \
1817 H_PUT_8 (abfd, from->pr_sname, &to.pr_sname); \
1818 H_PUT_8 (abfd, from->pr_zomb, &to.pr_zomb); \
1819 H_PUT_8 (abfd, from->pr_nice, &to.pr_nice); \
1820 H_PUT_32 (abfd, from->pr_flag, to.pr_flag); \
1821 H_PUT_32 (abfd, from->pr_uid, to.pr_uid); \
1822 H_PUT_32 (abfd, from->pr_gid, to.pr_gid); \
1823 H_PUT_32 (abfd, from->pr_pid, to.pr_pid); \
1824 H_PUT_32 (abfd, from->pr_ppid, to.pr_ppid); \
1825 H_PUT_32 (abfd, from->pr_pgrp, to.pr_pgrp); \
1826 H_PUT_32 (abfd, from->pr_sid, to.pr_sid); \
1827 strncpy (to.pr_fname, from->pr_fname, sizeof (to.pr_fname)); \
1828 strncpy (to.pr_psargs, from->pr_psargs, sizeof (to.pr_psargs)); \
1829 } while (0)
1830
1831 \f
1832 /* Initialize the ppc_elf_howto_table, so that linear accesses can be done. */
1833
1834 static void
1835 ppc_elf_howto_init (void)
1836 {
1837 unsigned int i, type;
1838
1839 for (i = 0;
1840 i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]);
1841 i++)
1842 {
1843 type = ppc_elf_howto_raw[i].type;
1844 if (type >= (sizeof (ppc_elf_howto_table)
1845 / sizeof (ppc_elf_howto_table[0])))
1846 abort ();
1847 ppc_elf_howto_table[type] = &ppc_elf_howto_raw[i];
1848 }
1849 }
1850
1851 static reloc_howto_type *
1852 ppc_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1853 bfd_reloc_code_real_type code)
1854 {
1855 enum elf_ppc_reloc_type r;
1856
1857 /* Initialize howto table if not already done. */
1858 if (!ppc_elf_howto_table[R_PPC_ADDR32])
1859 ppc_elf_howto_init ();
1860
1861 switch (code)
1862 {
1863 default:
1864 return NULL;
1865
1866 case BFD_RELOC_NONE: r = R_PPC_NONE; break;
1867 case BFD_RELOC_32: r = R_PPC_ADDR32; break;
1868 case BFD_RELOC_PPC_BA26: r = R_PPC_ADDR24; break;
1869 case BFD_RELOC_PPC64_ADDR16_DS:
1870 case BFD_RELOC_16: r = R_PPC_ADDR16; break;
1871 case BFD_RELOC_PPC64_ADDR16_LO_DS:
1872 case BFD_RELOC_LO16: r = R_PPC_ADDR16_LO; break;
1873 case BFD_RELOC_HI16: r = R_PPC_ADDR16_HI; break;
1874 case BFD_RELOC_HI16_S: r = R_PPC_ADDR16_HA; break;
1875 case BFD_RELOC_PPC_BA16: r = R_PPC_ADDR14; break;
1876 case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC_ADDR14_BRTAKEN; break;
1877 case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC_ADDR14_BRNTAKEN; break;
1878 case BFD_RELOC_PPC_B26: r = R_PPC_REL24; break;
1879 case BFD_RELOC_PPC_B16: r = R_PPC_REL14; break;
1880 case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC_REL14_BRTAKEN; break;
1881 case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC_REL14_BRNTAKEN; break;
1882 case BFD_RELOC_PPC64_GOT16_DS:
1883 case BFD_RELOC_16_GOTOFF: r = R_PPC_GOT16; break;
1884 case BFD_RELOC_PPC64_GOT16_LO_DS:
1885 case BFD_RELOC_LO16_GOTOFF: r = R_PPC_GOT16_LO; break;
1886 case BFD_RELOC_HI16_GOTOFF: r = R_PPC_GOT16_HI; break;
1887 case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC_GOT16_HA; break;
1888 case BFD_RELOC_24_PLT_PCREL: r = R_PPC_PLTREL24; break;
1889 case BFD_RELOC_PPC_COPY: r = R_PPC_COPY; break;
1890 case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC_GLOB_DAT; break;
1891 case BFD_RELOC_PPC_LOCAL24PC: r = R_PPC_LOCAL24PC; break;
1892 case BFD_RELOC_32_PCREL: r = R_PPC_REL32; break;
1893 case BFD_RELOC_32_PLTOFF: r = R_PPC_PLT32; break;
1894 case BFD_RELOC_32_PLT_PCREL: r = R_PPC_PLTREL32; break;
1895 case BFD_RELOC_PPC64_PLT16_LO_DS:
1896 case BFD_RELOC_LO16_PLTOFF: r = R_PPC_PLT16_LO; break;
1897 case BFD_RELOC_HI16_PLTOFF: r = R_PPC_PLT16_HI; break;
1898 case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC_PLT16_HA; break;
1899 case BFD_RELOC_GPREL16: r = R_PPC_SDAREL16; break;
1900 case BFD_RELOC_PPC64_SECTOFF_DS:
1901 case BFD_RELOC_16_BASEREL: r = R_PPC_SECTOFF; break;
1902 case BFD_RELOC_PPC64_SECTOFF_LO_DS:
1903 case BFD_RELOC_LO16_BASEREL: r = R_PPC_SECTOFF_LO; break;
1904 case BFD_RELOC_HI16_BASEREL: r = R_PPC_SECTOFF_HI; break;
1905 case BFD_RELOC_HI16_S_BASEREL: r = R_PPC_SECTOFF_HA; break;
1906 case BFD_RELOC_CTOR: r = R_PPC_ADDR32; break;
1907 case BFD_RELOC_PPC64_TOC16_DS:
1908 case BFD_RELOC_PPC_TOC16: r = R_PPC_TOC16; break;
1909 case BFD_RELOC_PPC_TLS: r = R_PPC_TLS; break;
1910 case BFD_RELOC_PPC_TLSGD: r = R_PPC_TLSGD; break;
1911 case BFD_RELOC_PPC_TLSLD: r = R_PPC_TLSLD; break;
1912 case BFD_RELOC_PPC_DTPMOD: r = R_PPC_DTPMOD32; break;
1913 case BFD_RELOC_PPC64_TPREL16_DS:
1914 case BFD_RELOC_PPC_TPREL16: r = R_PPC_TPREL16; break;
1915 case BFD_RELOC_PPC64_TPREL16_LO_DS:
1916 case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC_TPREL16_LO; break;
1917 case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC_TPREL16_HI; break;
1918 case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC_TPREL16_HA; break;
1919 case BFD_RELOC_PPC_TPREL: r = R_PPC_TPREL32; break;
1920 case BFD_RELOC_PPC64_DTPREL16_DS:
1921 case BFD_RELOC_PPC_DTPREL16: r = R_PPC_DTPREL16; break;
1922 case BFD_RELOC_PPC64_DTPREL16_LO_DS:
1923 case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC_DTPREL16_LO; break;
1924 case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC_DTPREL16_HI; break;
1925 case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC_DTPREL16_HA; break;
1926 case BFD_RELOC_PPC_DTPREL: r = R_PPC_DTPREL32; break;
1927 case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC_GOT_TLSGD16; break;
1928 case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC_GOT_TLSGD16_LO; break;
1929 case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC_GOT_TLSGD16_HI; break;
1930 case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC_GOT_TLSGD16_HA; break;
1931 case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC_GOT_TLSLD16; break;
1932 case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC_GOT_TLSLD16_LO; break;
1933 case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC_GOT_TLSLD16_HI; break;
1934 case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC_GOT_TLSLD16_HA; break;
1935 case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC_GOT_TPREL16; break;
1936 case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC_GOT_TPREL16_LO; break;
1937 case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC_GOT_TPREL16_HI; break;
1938 case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC_GOT_TPREL16_HA; break;
1939 case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC_GOT_DTPREL16; break;
1940 case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC_GOT_DTPREL16_LO; break;
1941 case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC_GOT_DTPREL16_HI; break;
1942 case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC_GOT_DTPREL16_HA; break;
1943 case BFD_RELOC_PPC_EMB_NADDR32: r = R_PPC_EMB_NADDR32; break;
1944 case BFD_RELOC_PPC_EMB_NADDR16: r = R_PPC_EMB_NADDR16; break;
1945 case BFD_RELOC_PPC_EMB_NADDR16_LO: r = R_PPC_EMB_NADDR16_LO; break;
1946 case BFD_RELOC_PPC_EMB_NADDR16_HI: r = R_PPC_EMB_NADDR16_HI; break;
1947 case BFD_RELOC_PPC_EMB_NADDR16_HA: r = R_PPC_EMB_NADDR16_HA; break;
1948 case BFD_RELOC_PPC_EMB_SDAI16: r = R_PPC_EMB_SDAI16; break;
1949 case BFD_RELOC_PPC_EMB_SDA2I16: r = R_PPC_EMB_SDA2I16; break;
1950 case BFD_RELOC_PPC_EMB_SDA2REL: r = R_PPC_EMB_SDA2REL; break;
1951 case BFD_RELOC_PPC_EMB_SDA21: r = R_PPC_EMB_SDA21; break;
1952 case BFD_RELOC_PPC_EMB_MRKREF: r = R_PPC_EMB_MRKREF; break;
1953 case BFD_RELOC_PPC_EMB_RELSEC16: r = R_PPC_EMB_RELSEC16; break;
1954 case BFD_RELOC_PPC_EMB_RELST_LO: r = R_PPC_EMB_RELST_LO; break;
1955 case BFD_RELOC_PPC_EMB_RELST_HI: r = R_PPC_EMB_RELST_HI; break;
1956 case BFD_RELOC_PPC_EMB_RELST_HA: r = R_PPC_EMB_RELST_HA; break;
1957 case BFD_RELOC_PPC_EMB_BIT_FLD: r = R_PPC_EMB_BIT_FLD; break;
1958 case BFD_RELOC_PPC_EMB_RELSDA: r = R_PPC_EMB_RELSDA; break;
1959 case BFD_RELOC_PPC_VLE_REL8: r = R_PPC_VLE_REL8; break;
1960 case BFD_RELOC_PPC_VLE_REL15: r = R_PPC_VLE_REL15; break;
1961 case BFD_RELOC_PPC_VLE_REL24: r = R_PPC_VLE_REL24; break;
1962 case BFD_RELOC_PPC_VLE_LO16A: r = R_PPC_VLE_LO16A; break;
1963 case BFD_RELOC_PPC_VLE_LO16D: r = R_PPC_VLE_LO16D; break;
1964 case BFD_RELOC_PPC_VLE_HI16A: r = R_PPC_VLE_HI16A; break;
1965 case BFD_RELOC_PPC_VLE_HI16D: r = R_PPC_VLE_HI16D; break;
1966 case BFD_RELOC_PPC_VLE_HA16A: r = R_PPC_VLE_HA16A; break;
1967 case BFD_RELOC_PPC_VLE_HA16D: r = R_PPC_VLE_HA16D; break;
1968 case BFD_RELOC_PPC_VLE_SDA21: r = R_PPC_VLE_SDA21; break;
1969 case BFD_RELOC_PPC_VLE_SDA21_LO: r = R_PPC_VLE_SDA21_LO; break;
1970 case BFD_RELOC_PPC_VLE_SDAREL_LO16A:
1971 r = R_PPC_VLE_SDAREL_LO16A;
1972 break;
1973 case BFD_RELOC_PPC_VLE_SDAREL_LO16D:
1974 r = R_PPC_VLE_SDAREL_LO16D;
1975 break;
1976 case BFD_RELOC_PPC_VLE_SDAREL_HI16A:
1977 r = R_PPC_VLE_SDAREL_HI16A;
1978 break;
1979 case BFD_RELOC_PPC_VLE_SDAREL_HI16D:
1980 r = R_PPC_VLE_SDAREL_HI16D;
1981 break;
1982 case BFD_RELOC_PPC_VLE_SDAREL_HA16A:
1983 r = R_PPC_VLE_SDAREL_HA16A;
1984 break;
1985 case BFD_RELOC_PPC_VLE_SDAREL_HA16D:
1986 r = R_PPC_VLE_SDAREL_HA16D;
1987 break;
1988 case BFD_RELOC_16_PCREL: r = R_PPC_REL16; break;
1989 case BFD_RELOC_LO16_PCREL: r = R_PPC_REL16_LO; break;
1990 case BFD_RELOC_HI16_PCREL: r = R_PPC_REL16_HI; break;
1991 case BFD_RELOC_HI16_S_PCREL: r = R_PPC_REL16_HA; break;
1992 case BFD_RELOC_VTABLE_INHERIT: r = R_PPC_GNU_VTINHERIT; break;
1993 case BFD_RELOC_VTABLE_ENTRY: r = R_PPC_GNU_VTENTRY; break;
1994 }
1995
1996 return ppc_elf_howto_table[r];
1997 };
1998
1999 static reloc_howto_type *
2000 ppc_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
2001 const char *r_name)
2002 {
2003 unsigned int i;
2004
2005 for (i = 0;
2006 i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]);
2007 i++)
2008 if (ppc_elf_howto_raw[i].name != NULL
2009 && strcasecmp (ppc_elf_howto_raw[i].name, r_name) == 0)
2010 return &ppc_elf_howto_raw[i];
2011
2012 return NULL;
2013 }
2014
2015 /* Set the howto pointer for a PowerPC ELF reloc. */
2016
2017 static void
2018 ppc_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED,
2019 arelent *cache_ptr,
2020 Elf_Internal_Rela *dst)
2021 {
2022 /* Initialize howto table if not already done. */
2023 if (!ppc_elf_howto_table[R_PPC_ADDR32])
2024 ppc_elf_howto_init ();
2025
2026 BFD_ASSERT (ELF32_R_TYPE (dst->r_info) < (unsigned int) R_PPC_max);
2027 cache_ptr->howto = ppc_elf_howto_table[ELF32_R_TYPE (dst->r_info)];
2028
2029 /* Just because the above assert didn't trigger doesn't mean that
2030 ELF32_R_TYPE (dst->r_info) is necessarily a valid relocation. */
2031 if (!cache_ptr->howto)
2032 {
2033 (*_bfd_error_handler) (_("%B: invalid relocation type %d"),
2034 abfd, ELF32_R_TYPE (dst->r_info));
2035 bfd_set_error (bfd_error_bad_value);
2036
2037 cache_ptr->howto = ppc_elf_howto_table[R_PPC_NONE];
2038 }
2039 }
2040
2041 /* Handle the R_PPC_ADDR16_HA and R_PPC_REL16_HA relocs. */
2042
2043 static bfd_reloc_status_type
2044 ppc_elf_addr16_ha_reloc (bfd *abfd ATTRIBUTE_UNUSED,
2045 arelent *reloc_entry,
2046 asymbol *symbol,
2047 void *data ATTRIBUTE_UNUSED,
2048 asection *input_section,
2049 bfd *output_bfd,
2050 char **error_message ATTRIBUTE_UNUSED)
2051 {
2052 bfd_vma relocation;
2053
2054 if (output_bfd != NULL)
2055 {
2056 reloc_entry->address += input_section->output_offset;
2057 return bfd_reloc_ok;
2058 }
2059
2060 if (reloc_entry->address > bfd_get_section_limit (abfd, input_section))
2061 return bfd_reloc_outofrange;
2062
2063 if (bfd_is_com_section (symbol->section))
2064 relocation = 0;
2065 else
2066 relocation = symbol->value;
2067
2068 relocation += symbol->section->output_section->vma;
2069 relocation += symbol->section->output_offset;
2070 relocation += reloc_entry->addend;
2071 if (reloc_entry->howto->pc_relative)
2072 relocation -= reloc_entry->address;
2073
2074 reloc_entry->addend += (relocation & 0x8000) << 1;
2075
2076 return bfd_reloc_continue;
2077 }
2078
2079 static bfd_reloc_status_type
2080 ppc_elf_unhandled_reloc (bfd *abfd,
2081 arelent *reloc_entry,
2082 asymbol *symbol,
2083 void *data,
2084 asection *input_section,
2085 bfd *output_bfd,
2086 char **error_message)
2087 {
2088 /* If this is a relocatable link (output_bfd test tells us), just
2089 call the generic function. Any adjustment will be done at final
2090 link time. */
2091 if (output_bfd != NULL)
2092 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2093 input_section, output_bfd, error_message);
2094
2095 if (error_message != NULL)
2096 {
2097 static char buf[60];
2098 sprintf (buf, _("generic linker can't handle %s"),
2099 reloc_entry->howto->name);
2100 *error_message = buf;
2101 }
2102 return bfd_reloc_dangerous;
2103 }
2104 \f
2105 /* Sections created by the linker. */
2106
2107 typedef struct elf_linker_section
2108 {
2109 /* Pointer to the bfd section. */
2110 asection *section;
2111 /* Section name. */
2112 const char *name;
2113 /* Associated bss section name. */
2114 const char *bss_name;
2115 /* Associated symbol name. */
2116 const char *sym_name;
2117 /* Associated symbol. */
2118 struct elf_link_hash_entry *sym;
2119 } elf_linker_section_t;
2120
2121 /* Linked list of allocated pointer entries. This hangs off of the
2122 symbol lists, and provides allows us to return different pointers,
2123 based on different addend's. */
2124
2125 typedef struct elf_linker_section_pointers
2126 {
2127 /* next allocated pointer for this symbol */
2128 struct elf_linker_section_pointers *next;
2129 /* offset of pointer from beginning of section */
2130 bfd_vma offset;
2131 /* addend used */
2132 bfd_vma addend;
2133 /* which linker section this is */
2134 elf_linker_section_t *lsect;
2135 } elf_linker_section_pointers_t;
2136
2137 struct ppc_elf_obj_tdata
2138 {
2139 struct elf_obj_tdata elf;
2140
2141 /* A mapping from local symbols to offsets into the various linker
2142 sections added. This is index by the symbol index. */
2143 elf_linker_section_pointers_t **linker_section_pointers;
2144
2145 /* Flags used to auto-detect plt type. */
2146 unsigned int makes_plt_call : 1;
2147 unsigned int has_rel16 : 1;
2148 };
2149
2150 #define ppc_elf_tdata(bfd) \
2151 ((struct ppc_elf_obj_tdata *) (bfd)->tdata.any)
2152
2153 #define elf_local_ptr_offsets(bfd) \
2154 (ppc_elf_tdata (bfd)->linker_section_pointers)
2155
2156 #define is_ppc_elf(bfd) \
2157 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
2158 && elf_object_id (bfd) == PPC32_ELF_DATA)
2159
2160 /* Override the generic function because we store some extras. */
2161
2162 static bfd_boolean
2163 ppc_elf_mkobject (bfd *abfd)
2164 {
2165 return bfd_elf_allocate_object (abfd, sizeof (struct ppc_elf_obj_tdata),
2166 PPC32_ELF_DATA);
2167 }
2168
2169 /* Fix bad default arch selected for a 32 bit input bfd when the
2170 default is 64 bit. */
2171
2172 static bfd_boolean
2173 ppc_elf_object_p (bfd *abfd)
2174 {
2175 if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 64)
2176 {
2177 Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd);
2178
2179 if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS32)
2180 {
2181 /* Relies on arch after 64 bit default being 32 bit default. */
2182 abfd->arch_info = abfd->arch_info->next;
2183 BFD_ASSERT (abfd->arch_info->bits_per_word == 32);
2184 }
2185 }
2186 return TRUE;
2187 }
2188
2189 /* Function to set whether a module needs the -mrelocatable bit set. */
2190
2191 static bfd_boolean
2192 ppc_elf_set_private_flags (bfd *abfd, flagword flags)
2193 {
2194 BFD_ASSERT (!elf_flags_init (abfd)
2195 || elf_elfheader (abfd)->e_flags == flags);
2196
2197 elf_elfheader (abfd)->e_flags = flags;
2198 elf_flags_init (abfd) = TRUE;
2199 return TRUE;
2200 }
2201
2202 /* Support for core dump NOTE sections. */
2203
2204 static bfd_boolean
2205 ppc_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
2206 {
2207 int offset;
2208 unsigned int size;
2209
2210 switch (note->descsz)
2211 {
2212 default:
2213 return FALSE;
2214
2215 case 268: /* Linux/PPC. */
2216 /* pr_cursig */
2217 elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12);
2218
2219 /* pr_pid */
2220 elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 24);
2221
2222 /* pr_reg */
2223 offset = 72;
2224 size = 192;
2225
2226 break;
2227 }
2228
2229 /* Make a ".reg/999" section. */
2230 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
2231 size, note->descpos + offset);
2232 }
2233
2234 static bfd_boolean
2235 ppc_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
2236 {
2237 switch (note->descsz)
2238 {
2239 default:
2240 return FALSE;
2241
2242 case 128: /* Linux/PPC elf_prpsinfo. */
2243 elf_tdata (abfd)->core->pid
2244 = bfd_get_32 (abfd, note->descdata + 16);
2245 elf_tdata (abfd)->core->program
2246 = _bfd_elfcore_strndup (abfd, note->descdata + 32, 16);
2247 elf_tdata (abfd)->core->command
2248 = _bfd_elfcore_strndup (abfd, note->descdata + 48, 80);
2249 }
2250
2251 /* Note that for some reason, a spurious space is tacked
2252 onto the end of the args in some (at least one anyway)
2253 implementations, so strip it off if it exists. */
2254
2255 {
2256 char *command = elf_tdata (abfd)->core->command;
2257 int n = strlen (command);
2258
2259 if (0 < n && command[n - 1] == ' ')
2260 command[n - 1] = '\0';
2261 }
2262
2263 return TRUE;
2264 }
2265
2266 char *
2267 elfcore_write_ppc_linux_prpsinfo32 (bfd *abfd, char *buf, int *bufsiz,
2268 const struct elf_internal_linux_prpsinfo *prpsinfo)
2269 {
2270 struct elf_external_ppc_linux_prpsinfo32 data;
2271
2272 memset (&data, 0, sizeof (data));
2273 PPC_LINUX_PRPSINFO32_SWAP_FIELDS (abfd, prpsinfo, data);
2274
2275 return elfcore_write_note (abfd, buf, bufsiz,
2276 "CORE", NT_PRPSINFO, &data, sizeof (data));
2277 }
2278
2279 static char *
2280 ppc_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type, ...)
2281 {
2282 switch (note_type)
2283 {
2284 default:
2285 return NULL;
2286
2287 case NT_PRPSINFO:
2288 {
2289 char data[128];
2290 va_list ap;
2291
2292 va_start (ap, note_type);
2293 memset (data, 0, sizeof (data));
2294 strncpy (data + 32, va_arg (ap, const char *), 16);
2295 strncpy (data + 48, va_arg (ap, const char *), 80);
2296 va_end (ap);
2297 return elfcore_write_note (abfd, buf, bufsiz,
2298 "CORE", note_type, data, sizeof (data));
2299 }
2300
2301 case NT_PRSTATUS:
2302 {
2303 char data[268];
2304 va_list ap;
2305 long pid;
2306 int cursig;
2307 const void *greg;
2308
2309 va_start (ap, note_type);
2310 memset (data, 0, 72);
2311 pid = va_arg (ap, long);
2312 bfd_put_32 (abfd, pid, data + 24);
2313 cursig = va_arg (ap, int);
2314 bfd_put_16 (abfd, cursig, data + 12);
2315 greg = va_arg (ap, const void *);
2316 memcpy (data + 72, greg, 192);
2317 memset (data + 264, 0, 4);
2318 va_end (ap);
2319 return elfcore_write_note (abfd, buf, bufsiz,
2320 "CORE", note_type, data, sizeof (data));
2321 }
2322 }
2323 }
2324
2325 static flagword
2326 ppc_elf_lookup_section_flags (char *flag_name)
2327 {
2328
2329 if (!strcmp (flag_name, "SHF_PPC_VLE"))
2330 return SHF_PPC_VLE;
2331
2332 return 0;
2333 }
2334
2335 /* Add the VLE flag if required. */
2336
2337 bfd_boolean
2338 ppc_elf_section_processing (bfd *abfd, Elf_Internal_Shdr *shdr)
2339 {
2340 if (bfd_get_mach (abfd) == bfd_mach_ppc_vle
2341 && (shdr->sh_flags & SHF_EXECINSTR) != 0)
2342 shdr->sh_flags |= SHF_PPC_VLE;
2343
2344 return TRUE;
2345 }
2346
2347 /* Return address for Ith PLT stub in section PLT, for relocation REL
2348 or (bfd_vma) -1 if it should not be included. */
2349
2350 static bfd_vma
2351 ppc_elf_plt_sym_val (bfd_vma i ATTRIBUTE_UNUSED,
2352 const asection *plt ATTRIBUTE_UNUSED,
2353 const arelent *rel)
2354 {
2355 return rel->address;
2356 }
2357
2358 /* Handle a PowerPC specific section when reading an object file. This
2359 is called when bfd_section_from_shdr finds a section with an unknown
2360 type. */
2361
2362 static bfd_boolean
2363 ppc_elf_section_from_shdr (bfd *abfd,
2364 Elf_Internal_Shdr *hdr,
2365 const char *name,
2366 int shindex)
2367 {
2368 asection *newsect;
2369 flagword flags;
2370
2371 if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
2372 return FALSE;
2373
2374 newsect = hdr->bfd_section;
2375 flags = bfd_get_section_flags (abfd, newsect);
2376 if (hdr->sh_flags & SHF_EXCLUDE)
2377 flags |= SEC_EXCLUDE;
2378
2379 if (hdr->sh_type == SHT_ORDERED)
2380 flags |= SEC_SORT_ENTRIES;
2381
2382 bfd_set_section_flags (abfd, newsect, flags);
2383 return TRUE;
2384 }
2385
2386 /* Set up any other section flags and such that may be necessary. */
2387
2388 static bfd_boolean
2389 ppc_elf_fake_sections (bfd *abfd ATTRIBUTE_UNUSED,
2390 Elf_Internal_Shdr *shdr,
2391 asection *asect)
2392 {
2393 if ((asect->flags & SEC_SORT_ENTRIES) != 0)
2394 shdr->sh_type = SHT_ORDERED;
2395
2396 return TRUE;
2397 }
2398
2399 /* If we have .sbss2 or .PPC.EMB.sbss0 output sections, we
2400 need to bump up the number of section headers. */
2401
2402 static int
2403 ppc_elf_additional_program_headers (bfd *abfd,
2404 struct bfd_link_info *info ATTRIBUTE_UNUSED)
2405 {
2406 asection *s;
2407 int ret = 0;
2408
2409 s = bfd_get_section_by_name (abfd, ".sbss2");
2410 if (s != NULL && (s->flags & SEC_ALLOC) != 0)
2411 ++ret;
2412
2413 s = bfd_get_section_by_name (abfd, ".PPC.EMB.sbss0");
2414 if (s != NULL && (s->flags & SEC_ALLOC) != 0)
2415 ++ret;
2416
2417 return ret;
2418 }
2419
2420 /* Modify the segment map for VLE executables. */
2421
2422 bfd_boolean
2423 ppc_elf_modify_segment_map (bfd *abfd,
2424 struct bfd_link_info *info ATTRIBUTE_UNUSED)
2425 {
2426 struct elf_segment_map *m, *n;
2427 bfd_size_type amt;
2428 unsigned int j, k;
2429 bfd_boolean sect0_vle, sectj_vle;
2430
2431 /* At this point in the link, output sections have already been sorted by
2432 LMA and assigned to segments. All that is left to do is to ensure
2433 there is no mixing of VLE & non-VLE sections in a text segment.
2434 If we find that case, we split the segment.
2435 We maintain the original output section order. */
2436
2437 for (m = elf_seg_map (abfd); m != NULL; m = m->next)
2438 {
2439 if (m->count == 0)
2440 continue;
2441
2442 sect0_vle = (elf_section_flags (m->sections[0]) & SHF_PPC_VLE) != 0;
2443 for (j = 1; j < m->count; ++j)
2444 {
2445 sectj_vle = (elf_section_flags (m->sections[j]) & SHF_PPC_VLE) != 0;
2446
2447 if (sectj_vle != sect0_vle)
2448 break;
2449 }
2450 if (j >= m->count)
2451 continue;
2452
2453 /* sections 0..j-1 stay in this (current) segment,
2454 the remainder are put in a new segment.
2455 The scan resumes with the new segment. */
2456
2457 /* Fix the new segment. */
2458 amt = sizeof (struct elf_segment_map);
2459 amt += (m->count - j - 1) * sizeof (asection *);
2460 n = (struct elf_segment_map *) bfd_zalloc (abfd, amt);
2461 if (n == NULL)
2462 return FALSE;
2463
2464 n->p_type = PT_LOAD;
2465 n->p_flags = PF_X | PF_R;
2466 if (sectj_vle)
2467 n->p_flags |= PF_PPC_VLE;
2468 n->count = m->count - j;
2469 for (k = 0; k < n->count; ++k)
2470 {
2471 n->sections[k] = m->sections[j+k];
2472 m->sections[j+k] = NULL;
2473 }
2474 n->next = m->next;
2475 m->next = n;
2476
2477 /* Fix the current segment */
2478 m->count = j;
2479 }
2480
2481 return TRUE;
2482 }
2483
2484 /* Add extra PPC sections -- Note, for now, make .sbss2 and
2485 .PPC.EMB.sbss0 a normal section, and not a bss section so
2486 that the linker doesn't crater when trying to make more than
2487 2 sections. */
2488
2489 static const struct bfd_elf_special_section ppc_elf_special_sections[] =
2490 {
2491 { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, SHF_ALLOC + SHF_EXECINSTR },
2492 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2493 { STRING_COMMA_LEN (".sbss2"), -2, SHT_PROGBITS, SHF_ALLOC },
2494 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2495 { STRING_COMMA_LEN (".sdata2"), -2, SHT_PROGBITS, SHF_ALLOC },
2496 { STRING_COMMA_LEN (".tags"), 0, SHT_ORDERED, SHF_ALLOC },
2497 { STRING_COMMA_LEN (".PPC.EMB.apuinfo"), 0, SHT_NOTE, 0 },
2498 { STRING_COMMA_LEN (".PPC.EMB.sbss0"), 0, SHT_PROGBITS, SHF_ALLOC },
2499 { STRING_COMMA_LEN (".PPC.EMB.sdata0"), 0, SHT_PROGBITS, SHF_ALLOC },
2500 { NULL, 0, 0, 0, 0 }
2501 };
2502
2503 /* This is what we want for new plt/got. */
2504 static struct bfd_elf_special_section ppc_alt_plt =
2505 { STRING_COMMA_LEN (".plt"), 0, SHT_PROGBITS, SHF_ALLOC };
2506
2507 static const struct bfd_elf_special_section *
2508 ppc_elf_get_sec_type_attr (bfd *abfd ATTRIBUTE_UNUSED, asection *sec)
2509 {
2510 const struct bfd_elf_special_section *ssect;
2511
2512 /* See if this is one of the special sections. */
2513 if (sec->name == NULL)
2514 return NULL;
2515
2516 ssect = _bfd_elf_get_special_section (sec->name, ppc_elf_special_sections,
2517 sec->use_rela_p);
2518 if (ssect != NULL)
2519 {
2520 if (ssect == ppc_elf_special_sections && (sec->flags & SEC_LOAD) != 0)
2521 ssect = &ppc_alt_plt;
2522 return ssect;
2523 }
2524
2525 return _bfd_elf_get_sec_type_attr (abfd, sec);
2526 }
2527 \f
2528 /* Very simple linked list structure for recording apuinfo values. */
2529 typedef struct apuinfo_list
2530 {
2531 struct apuinfo_list *next;
2532 unsigned long value;
2533 }
2534 apuinfo_list;
2535
2536 static apuinfo_list *head;
2537 static bfd_boolean apuinfo_set;
2538
2539 static void
2540 apuinfo_list_init (void)
2541 {
2542 head = NULL;
2543 apuinfo_set = FALSE;
2544 }
2545
2546 static void
2547 apuinfo_list_add (unsigned long value)
2548 {
2549 apuinfo_list *entry = head;
2550
2551 while (entry != NULL)
2552 {
2553 if (entry->value == value)
2554 return;
2555 entry = entry->next;
2556 }
2557
2558 entry = bfd_malloc (sizeof (* entry));
2559 if (entry == NULL)
2560 return;
2561
2562 entry->value = value;
2563 entry->next = head;
2564 head = entry;
2565 }
2566
2567 static unsigned
2568 apuinfo_list_length (void)
2569 {
2570 apuinfo_list *entry;
2571 unsigned long count;
2572
2573 for (entry = head, count = 0;
2574 entry;
2575 entry = entry->next)
2576 ++ count;
2577
2578 return count;
2579 }
2580
2581 static inline unsigned long
2582 apuinfo_list_element (unsigned long number)
2583 {
2584 apuinfo_list * entry;
2585
2586 for (entry = head;
2587 entry && number --;
2588 entry = entry->next)
2589 ;
2590
2591 return entry ? entry->value : 0;
2592 }
2593
2594 static void
2595 apuinfo_list_finish (void)
2596 {
2597 apuinfo_list *entry;
2598
2599 for (entry = head; entry;)
2600 {
2601 apuinfo_list *next = entry->next;
2602 free (entry);
2603 entry = next;
2604 }
2605
2606 head = NULL;
2607 }
2608
2609 #define APUINFO_SECTION_NAME ".PPC.EMB.apuinfo"
2610 #define APUINFO_LABEL "APUinfo"
2611
2612 /* Scan the input BFDs and create a linked list of
2613 the APUinfo values that will need to be emitted. */
2614
2615 static void
2616 ppc_elf_begin_write_processing (bfd *abfd, struct bfd_link_info *link_info)
2617 {
2618 bfd *ibfd;
2619 asection *asec;
2620 char *buffer = NULL;
2621 bfd_size_type largest_input_size = 0;
2622 unsigned i;
2623 unsigned long length;
2624 const char *error_message = NULL;
2625
2626 if (link_info == NULL)
2627 return;
2628
2629 apuinfo_list_init ();
2630
2631 /* Read in the input sections contents. */
2632 for (ibfd = link_info->input_bfds; ibfd; ibfd = ibfd->link_next)
2633 {
2634 unsigned long datum;
2635
2636 asec = bfd_get_section_by_name (ibfd, APUINFO_SECTION_NAME);
2637 if (asec == NULL)
2638 continue;
2639
2640 error_message = _("corrupt %s section in %B");
2641 length = asec->size;
2642 if (length < 20)
2643 goto fail;
2644
2645 apuinfo_set = TRUE;
2646 if (largest_input_size < asec->size)
2647 {
2648 if (buffer)
2649 free (buffer);
2650 largest_input_size = asec->size;
2651 buffer = bfd_malloc (largest_input_size);
2652 if (!buffer)
2653 return;
2654 }
2655
2656 if (bfd_seek (ibfd, asec->filepos, SEEK_SET) != 0
2657 || (bfd_bread (buffer, length, ibfd) != length))
2658 {
2659 error_message = _("unable to read in %s section from %B");
2660 goto fail;
2661 }
2662
2663 /* Verify the contents of the header. Note - we have to
2664 extract the values this way in order to allow for a
2665 host whose endian-ness is different from the target. */
2666 datum = bfd_get_32 (ibfd, buffer);
2667 if (datum != sizeof APUINFO_LABEL)
2668 goto fail;
2669
2670 datum = bfd_get_32 (ibfd, buffer + 8);
2671 if (datum != 0x2)
2672 goto fail;
2673
2674 if (strcmp (buffer + 12, APUINFO_LABEL) != 0)
2675 goto fail;
2676
2677 /* Get the number of bytes used for apuinfo entries. */
2678 datum = bfd_get_32 (ibfd, buffer + 4);
2679 if (datum + 20 != length)
2680 goto fail;
2681
2682 /* Scan the apuinfo section, building a list of apuinfo numbers. */
2683 for (i = 0; i < datum; i += 4)
2684 apuinfo_list_add (bfd_get_32 (ibfd, buffer + 20 + i));
2685 }
2686
2687 error_message = NULL;
2688
2689 if (apuinfo_set)
2690 {
2691 /* Compute the size of the output section. */
2692 unsigned num_entries = apuinfo_list_length ();
2693
2694 /* Set the output section size, if it exists. */
2695 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2696
2697 if (asec && ! bfd_set_section_size (abfd, asec, 20 + num_entries * 4))
2698 {
2699 ibfd = abfd;
2700 error_message = _("warning: unable to set size of %s section in %B");
2701 }
2702 }
2703
2704 fail:
2705 if (buffer)
2706 free (buffer);
2707
2708 if (error_message)
2709 (*_bfd_error_handler) (error_message, ibfd, APUINFO_SECTION_NAME);
2710 }
2711
2712 /* Prevent the output section from accumulating the input sections'
2713 contents. We have already stored this in our linked list structure. */
2714
2715 static bfd_boolean
2716 ppc_elf_write_section (bfd *abfd ATTRIBUTE_UNUSED,
2717 struct bfd_link_info *link_info ATTRIBUTE_UNUSED,
2718 asection *asec,
2719 bfd_byte *contents ATTRIBUTE_UNUSED)
2720 {
2721 return apuinfo_set && strcmp (asec->name, APUINFO_SECTION_NAME) == 0;
2722 }
2723
2724 /* Finally we can generate the output section. */
2725
2726 static void
2727 ppc_elf_final_write_processing (bfd *abfd, bfd_boolean linker ATTRIBUTE_UNUSED)
2728 {
2729 bfd_byte *buffer;
2730 asection *asec;
2731 unsigned i;
2732 unsigned num_entries;
2733 bfd_size_type length;
2734
2735 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2736 if (asec == NULL)
2737 return;
2738
2739 if (!apuinfo_set)
2740 return;
2741
2742 length = asec->size;
2743 if (length < 20)
2744 return;
2745
2746 buffer = bfd_malloc (length);
2747 if (buffer == NULL)
2748 {
2749 (*_bfd_error_handler)
2750 (_("failed to allocate space for new APUinfo section."));
2751 return;
2752 }
2753
2754 /* Create the apuinfo header. */
2755 num_entries = apuinfo_list_length ();
2756 bfd_put_32 (abfd, sizeof APUINFO_LABEL, buffer);
2757 bfd_put_32 (abfd, num_entries * 4, buffer + 4);
2758 bfd_put_32 (abfd, 0x2, buffer + 8);
2759 strcpy ((char *) buffer + 12, APUINFO_LABEL);
2760
2761 length = 20;
2762 for (i = 0; i < num_entries; i++)
2763 {
2764 bfd_put_32 (abfd, apuinfo_list_element (i), buffer + length);
2765 length += 4;
2766 }
2767
2768 if (length != asec->size)
2769 (*_bfd_error_handler) (_("failed to compute new APUinfo section."));
2770
2771 if (! bfd_set_section_contents (abfd, asec, buffer, (file_ptr) 0, length))
2772 (*_bfd_error_handler) (_("failed to install new APUinfo section."));
2773
2774 free (buffer);
2775
2776 apuinfo_list_finish ();
2777 }
2778 \f
2779 static bfd_boolean
2780 is_nonpic_glink_stub (bfd *abfd, asection *glink, bfd_vma off)
2781 {
2782 bfd_byte buf[GLINK_ENTRY_SIZE];
2783
2784 if (!bfd_get_section_contents (abfd, glink, buf, off, GLINK_ENTRY_SIZE))
2785 return FALSE;
2786
2787 return ((bfd_get_32 (abfd, buf + 0) & 0xffff0000) == LIS_11
2788 && (bfd_get_32 (abfd, buf + 4) & 0xffff0000) == LWZ_11_11
2789 && bfd_get_32 (abfd, buf + 8) == MTCTR_11
2790 && bfd_get_32 (abfd, buf + 12) == BCTR);
2791 }
2792
2793 static bfd_boolean
2794 section_covers_vma (bfd *abfd ATTRIBUTE_UNUSED, asection *section, void *ptr)
2795 {
2796 bfd_vma vma = *(bfd_vma *) ptr;
2797 return ((section->flags & SEC_ALLOC) != 0
2798 && section->vma <= vma
2799 && vma < section->vma + section->size);
2800 }
2801
2802 static long
2803 ppc_elf_get_synthetic_symtab (bfd *abfd, long symcount, asymbol **syms,
2804 long dynsymcount, asymbol **dynsyms,
2805 asymbol **ret)
2806 {
2807 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
2808 asection *plt, *relplt, *dynamic, *glink;
2809 bfd_vma glink_vma = 0;
2810 bfd_vma resolv_vma = 0;
2811 bfd_vma stub_vma;
2812 asymbol *s;
2813 arelent *p;
2814 long count, i;
2815 size_t size;
2816 char *names;
2817 bfd_byte buf[4];
2818
2819 *ret = NULL;
2820
2821 if ((abfd->flags & (DYNAMIC | EXEC_P)) == 0)
2822 return 0;
2823
2824 if (dynsymcount <= 0)
2825 return 0;
2826
2827 relplt = bfd_get_section_by_name (abfd, ".rela.plt");
2828 if (relplt == NULL)
2829 return 0;
2830
2831 plt = bfd_get_section_by_name (abfd, ".plt");
2832 if (plt == NULL)
2833 return 0;
2834
2835 /* Call common code to handle old-style executable PLTs. */
2836 if (elf_section_flags (plt) & SHF_EXECINSTR)
2837 return _bfd_elf_get_synthetic_symtab (abfd, symcount, syms,
2838 dynsymcount, dynsyms, ret);
2839
2840 /* If this object was prelinked, the prelinker stored the address
2841 of .glink at got[1]. If it wasn't prelinked, got[1] will be zero. */
2842 dynamic = bfd_get_section_by_name (abfd, ".dynamic");
2843 if (dynamic != NULL)
2844 {
2845 bfd_byte *dynbuf, *extdyn, *extdynend;
2846 size_t extdynsize;
2847 void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *);
2848
2849 if (!bfd_malloc_and_get_section (abfd, dynamic, &dynbuf))
2850 return -1;
2851
2852 extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn;
2853 swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in;
2854
2855 extdyn = dynbuf;
2856 extdynend = extdyn + dynamic->size;
2857 for (; extdyn < extdynend; extdyn += extdynsize)
2858 {
2859 Elf_Internal_Dyn dyn;
2860 (*swap_dyn_in) (abfd, extdyn, &dyn);
2861
2862 if (dyn.d_tag == DT_NULL)
2863 break;
2864
2865 if (dyn.d_tag == DT_PPC_GOT)
2866 {
2867 unsigned int g_o_t = dyn.d_un.d_val;
2868 asection *got = bfd_get_section_by_name (abfd, ".got");
2869 if (got != NULL
2870 && bfd_get_section_contents (abfd, got, buf,
2871 g_o_t - got->vma + 4, 4))
2872 glink_vma = bfd_get_32 (abfd, buf);
2873 break;
2874 }
2875 }
2876 free (dynbuf);
2877 }
2878
2879 /* Otherwise we read the first plt entry. */
2880 if (glink_vma == 0)
2881 {
2882 if (bfd_get_section_contents (abfd, plt, buf, 0, 4))
2883 glink_vma = bfd_get_32 (abfd, buf);
2884 }
2885
2886 if (glink_vma == 0)
2887 return 0;
2888
2889 /* The .glink section usually does not survive the final
2890 link; search for the section (usually .text) where the
2891 glink stubs now reside. */
2892 glink = bfd_sections_find_if (abfd, section_covers_vma, &glink_vma);
2893 if (glink == NULL)
2894 return 0;
2895
2896 /* Determine glink PLT resolver by reading the relative branch
2897 from the first glink stub. */
2898 if (bfd_get_section_contents (abfd, glink, buf,
2899 glink_vma - glink->vma, 4))
2900 {
2901 unsigned int insn = bfd_get_32 (abfd, buf);
2902
2903 /* The first glink stub may either branch to the resolver ... */
2904 insn ^= B;
2905 if ((insn & ~0x3fffffc) == 0)
2906 resolv_vma = glink_vma + (insn ^ 0x2000000) - 0x2000000;
2907
2908 /* ... or fall through a bunch of NOPs. */
2909 else if ((insn ^ B ^ NOP) == 0)
2910 for (i = 4;
2911 bfd_get_section_contents (abfd, glink, buf,
2912 glink_vma - glink->vma + i, 4);
2913 i += 4)
2914 if (bfd_get_32 (abfd, buf) != NOP)
2915 {
2916 resolv_vma = glink_vma + i;
2917 break;
2918 }
2919 }
2920
2921 count = relplt->size / sizeof (Elf32_External_Rela);
2922 stub_vma = glink_vma - (bfd_vma) count * 16;
2923 /* If the stubs are those for -shared/-pie then we might have
2924 multiple stubs for each plt entry. If that is the case then
2925 there is no way to associate stubs with their plt entries short
2926 of figuring out the GOT pointer value used in the stub. */
2927 if (!is_nonpic_glink_stub (abfd, glink,
2928 glink_vma - GLINK_ENTRY_SIZE - glink->vma))
2929 return 0;
2930
2931 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
2932 if (! (*slurp_relocs) (abfd, relplt, dynsyms, TRUE))
2933 return -1;
2934
2935 size = count * sizeof (asymbol);
2936 p = relplt->relocation;
2937 for (i = 0; i < count; i++, p++)
2938 {
2939 size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt");
2940 if (p->addend != 0)
2941 size += sizeof ("+0x") - 1 + 8;
2942 }
2943
2944 size += sizeof (asymbol) + sizeof ("__glink");
2945
2946 if (resolv_vma)
2947 size += sizeof (asymbol) + sizeof ("__glink_PLTresolve");
2948
2949 s = *ret = bfd_malloc (size);
2950 if (s == NULL)
2951 return -1;
2952
2953 names = (char *) (s + count + 1 + (resolv_vma != 0));
2954 p = relplt->relocation;
2955 for (i = 0; i < count; i++, p++)
2956 {
2957 size_t len;
2958
2959 *s = **p->sym_ptr_ptr;
2960 /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since
2961 we are defining a symbol, ensure one of them is set. */
2962 if ((s->flags & BSF_LOCAL) == 0)
2963 s->flags |= BSF_GLOBAL;
2964 s->flags |= BSF_SYNTHETIC;
2965 s->section = glink;
2966 s->value = stub_vma - glink->vma;
2967 s->name = names;
2968 s->udata.p = NULL;
2969 len = strlen ((*p->sym_ptr_ptr)->name);
2970 memcpy (names, (*p->sym_ptr_ptr)->name, len);
2971 names += len;
2972 if (p->addend != 0)
2973 {
2974 memcpy (names, "+0x", sizeof ("+0x") - 1);
2975 names += sizeof ("+0x") - 1;
2976 bfd_sprintf_vma (abfd, names, p->addend);
2977 names += strlen (names);
2978 }
2979 memcpy (names, "@plt", sizeof ("@plt"));
2980 names += sizeof ("@plt");
2981 ++s;
2982 stub_vma += 16;
2983 }
2984
2985 /* Add a symbol at the start of the glink branch table. */
2986 memset (s, 0, sizeof *s);
2987 s->the_bfd = abfd;
2988 s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
2989 s->section = glink;
2990 s->value = glink_vma - glink->vma;
2991 s->name = names;
2992 memcpy (names, "__glink", sizeof ("__glink"));
2993 names += sizeof ("__glink");
2994 s++;
2995 count++;
2996
2997 if (resolv_vma)
2998 {
2999 /* Add a symbol for the glink PLT resolver. */
3000 memset (s, 0, sizeof *s);
3001 s->the_bfd = abfd;
3002 s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
3003 s->section = glink;
3004 s->value = resolv_vma - glink->vma;
3005 s->name = names;
3006 memcpy (names, "__glink_PLTresolve", sizeof ("__glink_PLTresolve"));
3007 names += sizeof ("__glink_PLTresolve");
3008 s++;
3009 count++;
3010 }
3011
3012 return count;
3013 }
3014 \f
3015 /* The following functions are specific to the ELF linker, while
3016 functions above are used generally. They appear in this file more
3017 or less in the order in which they are called. eg.
3018 ppc_elf_check_relocs is called early in the link process,
3019 ppc_elf_finish_dynamic_sections is one of the last functions
3020 called. */
3021
3022 /* Track PLT entries needed for a given symbol. We might need more
3023 than one glink entry per symbol when generating a pic binary. */
3024 struct plt_entry
3025 {
3026 struct plt_entry *next;
3027
3028 /* -fPIC uses multiple GOT sections, one per file, called ".got2".
3029 This field stores the offset into .got2 used to initialise the
3030 GOT pointer reg. It will always be at least 32768. (Current
3031 gcc always uses an offset of 32768, but ld -r will pack .got2
3032 sections together resulting in larger offsets). */
3033 bfd_vma addend;
3034
3035 /* The .got2 section. */
3036 asection *sec;
3037
3038 /* PLT refcount or offset. */
3039 union
3040 {
3041 bfd_signed_vma refcount;
3042 bfd_vma offset;
3043 } plt;
3044
3045 /* .glink stub offset. */
3046 bfd_vma glink_offset;
3047 };
3048
3049 /* Of those relocs that might be copied as dynamic relocs, this function
3050 selects those that must be copied when linking a shared library,
3051 even when the symbol is local. */
3052
3053 static int
3054 must_be_dyn_reloc (struct bfd_link_info *info,
3055 enum elf_ppc_reloc_type r_type)
3056 {
3057 switch (r_type)
3058 {
3059 default:
3060 return 1;
3061
3062 case R_PPC_REL24:
3063 case R_PPC_REL14:
3064 case R_PPC_REL14_BRTAKEN:
3065 case R_PPC_REL14_BRNTAKEN:
3066 case R_PPC_REL32:
3067 return 0;
3068
3069 case R_PPC_TPREL32:
3070 case R_PPC_TPREL16:
3071 case R_PPC_TPREL16_LO:
3072 case R_PPC_TPREL16_HI:
3073 case R_PPC_TPREL16_HA:
3074 return !info->executable;
3075 }
3076 }
3077
3078 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
3079 copying dynamic variables from a shared lib into an app's dynbss
3080 section, and instead use a dynamic relocation to point into the
3081 shared lib. */
3082 #define ELIMINATE_COPY_RELOCS 1
3083
3084 /* Used to track dynamic relocations for local symbols. */
3085 struct ppc_dyn_relocs
3086 {
3087 struct ppc_dyn_relocs *next;
3088
3089 /* The input section of the reloc. */
3090 asection *sec;
3091
3092 /* Total number of relocs copied for the input section. */
3093 unsigned int count : 31;
3094
3095 /* Whether this entry is for STT_GNU_IFUNC symbols. */
3096 unsigned int ifunc : 1;
3097 };
3098
3099 /* PPC ELF linker hash entry. */
3100
3101 struct ppc_elf_link_hash_entry
3102 {
3103 struct elf_link_hash_entry elf;
3104
3105 /* If this symbol is used in the linker created sections, the processor
3106 specific backend uses this field to map the field into the offset
3107 from the beginning of the section. */
3108 elf_linker_section_pointers_t *linker_section_pointer;
3109
3110 /* Track dynamic relocs copied for this symbol. */
3111 struct elf_dyn_relocs *dyn_relocs;
3112
3113 /* Contexts in which symbol is used in the GOT (or TOC).
3114 TLS_GD .. TLS_TLS bits are or'd into the mask as the
3115 corresponding relocs are encountered during check_relocs.
3116 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
3117 indicate the corresponding GOT entry type is not needed. */
3118 #define TLS_GD 1 /* GD reloc. */
3119 #define TLS_LD 2 /* LD reloc. */
3120 #define TLS_TPREL 4 /* TPREL reloc, => IE. */
3121 #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
3122 #define TLS_TLS 16 /* Any TLS reloc. */
3123 #define TLS_TPRELGD 32 /* TPREL reloc resulting from GD->IE. */
3124 #define PLT_IFUNC 64 /* STT_GNU_IFUNC. */
3125 char tls_mask;
3126
3127 /* Nonzero if we have seen a small data relocation referring to this
3128 symbol. */
3129 unsigned char has_sda_refs;
3130 };
3131
3132 #define ppc_elf_hash_entry(ent) ((struct ppc_elf_link_hash_entry *) (ent))
3133
3134 /* PPC ELF linker hash table. */
3135
3136 struct ppc_elf_link_hash_table
3137 {
3138 struct elf_link_hash_table elf;
3139
3140 /* Various options passed from the linker. */
3141 struct ppc_elf_params *params;
3142
3143 /* Short-cuts to get to dynamic linker sections. */
3144 asection *got;
3145 asection *relgot;
3146 asection *glink;
3147 asection *plt;
3148 asection *relplt;
3149 asection *iplt;
3150 asection *reliplt;
3151 asection *dynbss;
3152 asection *relbss;
3153 asection *dynsbss;
3154 asection *relsbss;
3155 elf_linker_section_t sdata[2];
3156 asection *sbss;
3157 asection *glink_eh_frame;
3158
3159 /* The (unloaded but important) .rela.plt.unloaded on VxWorks. */
3160 asection *srelplt2;
3161
3162 /* The .got.plt section (VxWorks only)*/
3163 asection *sgotplt;
3164
3165 /* Shortcut to __tls_get_addr. */
3166 struct elf_link_hash_entry *tls_get_addr;
3167
3168 /* The bfd that forced an old-style PLT. */
3169 bfd *old_bfd;
3170
3171 /* TLS local dynamic got entry handling. */
3172 union {
3173 bfd_signed_vma refcount;
3174 bfd_vma offset;
3175 } tlsld_got;
3176
3177 /* Offset of branch table to PltResolve function in glink. */
3178 bfd_vma glink_pltresolve;
3179
3180 /* Size of reserved GOT entries. */
3181 unsigned int got_header_size;
3182 /* Non-zero if allocating the header left a gap. */
3183 unsigned int got_gap;
3184
3185 /* The type of PLT we have chosen to use. */
3186 enum ppc_elf_plt_type plt_type;
3187
3188 /* True if the target system is VxWorks. */
3189 unsigned int is_vxworks:1;
3190
3191 /* The size of PLT entries. */
3192 int plt_entry_size;
3193 /* The distance between adjacent PLT slots. */
3194 int plt_slot_size;
3195 /* The size of the first PLT entry. */
3196 int plt_initial_entry_size;
3197
3198 /* Small local sym cache. */
3199 struct sym_cache sym_cache;
3200 };
3201
3202 /* Rename some of the generic section flags to better document how they
3203 are used for ppc32. The flags are only valid for ppc32 elf objects. */
3204
3205 /* Nonzero if this section has TLS related relocations. */
3206 #define has_tls_reloc sec_flg0
3207
3208 /* Nonzero if this section has a call to __tls_get_addr. */
3209 #define has_tls_get_addr_call sec_flg1
3210
3211 /* Get the PPC ELF linker hash table from a link_info structure. */
3212
3213 #define ppc_elf_hash_table(p) \
3214 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
3215 == PPC32_ELF_DATA ? ((struct ppc_elf_link_hash_table *) ((p)->hash)) : NULL)
3216
3217 /* Create an entry in a PPC ELF linker hash table. */
3218
3219 static struct bfd_hash_entry *
3220 ppc_elf_link_hash_newfunc (struct bfd_hash_entry *entry,
3221 struct bfd_hash_table *table,
3222 const char *string)
3223 {
3224 /* Allocate the structure if it has not already been allocated by a
3225 subclass. */
3226 if (entry == NULL)
3227 {
3228 entry = bfd_hash_allocate (table,
3229 sizeof (struct ppc_elf_link_hash_entry));
3230 if (entry == NULL)
3231 return entry;
3232 }
3233
3234 /* Call the allocation method of the superclass. */
3235 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
3236 if (entry != NULL)
3237 {
3238 ppc_elf_hash_entry (entry)->linker_section_pointer = NULL;
3239 ppc_elf_hash_entry (entry)->dyn_relocs = NULL;
3240 ppc_elf_hash_entry (entry)->tls_mask = 0;
3241 ppc_elf_hash_entry (entry)->has_sda_refs = 0;
3242 }
3243
3244 return entry;
3245 }
3246
3247 /* Create a PPC ELF linker hash table. */
3248
3249 static struct bfd_link_hash_table *
3250 ppc_elf_link_hash_table_create (bfd *abfd)
3251 {
3252 struct ppc_elf_link_hash_table *ret;
3253 static struct ppc_elf_params default_params = { PLT_OLD, 0, 1, 0, 0, 4096 };
3254
3255 ret = bfd_zmalloc (sizeof (struct ppc_elf_link_hash_table));
3256 if (ret == NULL)
3257 return NULL;
3258
3259 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd,
3260 ppc_elf_link_hash_newfunc,
3261 sizeof (struct ppc_elf_link_hash_entry),
3262 PPC32_ELF_DATA))
3263 {
3264 free (ret);
3265 return NULL;
3266 }
3267
3268 ret->elf.init_plt_refcount.refcount = 0;
3269 ret->elf.init_plt_refcount.glist = NULL;
3270 ret->elf.init_plt_offset.offset = 0;
3271 ret->elf.init_plt_offset.glist = NULL;
3272
3273 ret->params = &default_params;
3274
3275 ret->sdata[0].name = ".sdata";
3276 ret->sdata[0].sym_name = "_SDA_BASE_";
3277 ret->sdata[0].bss_name = ".sbss";
3278
3279 ret->sdata[1].name = ".sdata2";
3280 ret->sdata[1].sym_name = "_SDA2_BASE_";
3281 ret->sdata[1].bss_name = ".sbss2";
3282
3283 ret->plt_entry_size = 12;
3284 ret->plt_slot_size = 8;
3285 ret->plt_initial_entry_size = 72;
3286
3287 return &ret->elf.root;
3288 }
3289
3290 /* Hook linker params into hash table. */
3291
3292 void
3293 ppc_elf_link_params (struct bfd_link_info *info, struct ppc_elf_params *params)
3294 {
3295 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
3296
3297 if (htab)
3298 htab->params = params;
3299 }
3300
3301 /* Create .got and the related sections. */
3302
3303 static bfd_boolean
3304 ppc_elf_create_got (bfd *abfd, struct bfd_link_info *info)
3305 {
3306 struct ppc_elf_link_hash_table *htab;
3307 asection *s;
3308 flagword flags;
3309
3310 if (!_bfd_elf_create_got_section (abfd, info))
3311 return FALSE;
3312
3313 htab = ppc_elf_hash_table (info);
3314 htab->got = s = bfd_get_linker_section (abfd, ".got");
3315 if (s == NULL)
3316 abort ();
3317
3318 if (htab->is_vxworks)
3319 {
3320 htab->sgotplt = bfd_get_linker_section (abfd, ".got.plt");
3321 if (!htab->sgotplt)
3322 abort ();
3323 }
3324 else
3325 {
3326 /* The powerpc .got has a blrl instruction in it. Mark it
3327 executable. */
3328 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS
3329 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3330 if (!bfd_set_section_flags (abfd, s, flags))
3331 return FALSE;
3332 }
3333
3334 htab->relgot = bfd_get_linker_section (abfd, ".rela.got");
3335 if (!htab->relgot)
3336 abort ();
3337
3338 return TRUE;
3339 }
3340
3341 static bfd_boolean
3342 ppc_elf_create_glink (bfd *abfd, struct bfd_link_info *info)
3343 {
3344 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
3345 asection *s;
3346 flagword flags;
3347
3348 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY | SEC_HAS_CONTENTS
3349 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3350 s = bfd_make_section_anyway_with_flags (abfd, ".glink", flags);
3351 htab->glink = s;
3352 if (s == NULL
3353 || !bfd_set_section_alignment (abfd, s,
3354 htab->params->ppc476_workaround ? 6 : 4))
3355 return FALSE;
3356
3357 if (!info->no_ld_generated_unwind_info)
3358 {
3359 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
3360 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3361 s = bfd_make_section_anyway_with_flags (abfd, ".eh_frame", flags);
3362 htab->glink_eh_frame = s;
3363 if (s == NULL
3364 || !bfd_set_section_alignment (abfd, s, 2))
3365 return FALSE;
3366 }
3367
3368 flags = SEC_ALLOC | SEC_LINKER_CREATED;
3369 s = bfd_make_section_anyway_with_flags (abfd, ".iplt", flags);
3370 htab->iplt = s;
3371 if (s == NULL
3372 || !bfd_set_section_alignment (abfd, s, 4))
3373 return FALSE;
3374
3375 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
3376 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3377 s = bfd_make_section_anyway_with_flags (abfd, ".rela.iplt", flags);
3378 htab->reliplt = s;
3379 if (s == NULL
3380 || ! bfd_set_section_alignment (abfd, s, 2))
3381 return FALSE;
3382 return TRUE;
3383 }
3384
3385 /* We have to create .dynsbss and .rela.sbss here so that they get mapped
3386 to output sections (just like _bfd_elf_create_dynamic_sections has
3387 to create .dynbss and .rela.bss). */
3388
3389 static bfd_boolean
3390 ppc_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
3391 {
3392 struct ppc_elf_link_hash_table *htab;
3393 asection *s;
3394 flagword flags;
3395
3396 htab = ppc_elf_hash_table (info);
3397
3398 if (htab->got == NULL
3399 && !ppc_elf_create_got (abfd, info))
3400 return FALSE;
3401
3402 if (!_bfd_elf_create_dynamic_sections (abfd, info))
3403 return FALSE;
3404
3405 if (htab->glink == NULL
3406 && !ppc_elf_create_glink (abfd, info))
3407 return FALSE;
3408
3409 htab->dynbss = bfd_get_linker_section (abfd, ".dynbss");
3410 s = bfd_make_section_anyway_with_flags (abfd, ".dynsbss",
3411 SEC_ALLOC | SEC_LINKER_CREATED);
3412 htab->dynsbss = s;
3413 if (s == NULL)
3414 return FALSE;
3415
3416 if (! info->shared)
3417 {
3418 htab->relbss = bfd_get_linker_section (abfd, ".rela.bss");
3419 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
3420 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3421 s = bfd_make_section_anyway_with_flags (abfd, ".rela.sbss", flags);
3422 htab->relsbss = s;
3423 if (s == NULL
3424 || ! bfd_set_section_alignment (abfd, s, 2))
3425 return FALSE;
3426 }
3427
3428 if (htab->is_vxworks
3429 && !elf_vxworks_create_dynamic_sections (abfd, info, &htab->srelplt2))
3430 return FALSE;
3431
3432 htab->relplt = bfd_get_linker_section (abfd, ".rela.plt");
3433 htab->plt = s = bfd_get_linker_section (abfd, ".plt");
3434 if (s == NULL)
3435 abort ();
3436
3437 flags = SEC_ALLOC | SEC_CODE | SEC_LINKER_CREATED;
3438 if (htab->plt_type == PLT_VXWORKS)
3439 /* The VxWorks PLT is a loaded section with contents. */
3440 flags |= SEC_HAS_CONTENTS | SEC_LOAD | SEC_READONLY;
3441 return bfd_set_section_flags (abfd, s, flags);
3442 }
3443
3444 /* Copy the extra info we tack onto an elf_link_hash_entry. */
3445
3446 static void
3447 ppc_elf_copy_indirect_symbol (struct bfd_link_info *info,
3448 struct elf_link_hash_entry *dir,
3449 struct elf_link_hash_entry *ind)
3450 {
3451 struct ppc_elf_link_hash_entry *edir, *eind;
3452
3453 edir = (struct ppc_elf_link_hash_entry *) dir;
3454 eind = (struct ppc_elf_link_hash_entry *) ind;
3455
3456 edir->tls_mask |= eind->tls_mask;
3457 edir->has_sda_refs |= eind->has_sda_refs;
3458
3459 /* If called to transfer flags for a weakdef during processing
3460 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
3461 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
3462 if (!(ELIMINATE_COPY_RELOCS
3463 && eind->elf.root.type != bfd_link_hash_indirect
3464 && edir->elf.dynamic_adjusted))
3465 edir->elf.non_got_ref |= eind->elf.non_got_ref;
3466
3467 edir->elf.ref_dynamic |= eind->elf.ref_dynamic;
3468 edir->elf.ref_regular |= eind->elf.ref_regular;
3469 edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak;
3470 edir->elf.needs_plt |= eind->elf.needs_plt;
3471 edir->elf.pointer_equality_needed |= eind->elf.pointer_equality_needed;
3472
3473 if (eind->dyn_relocs != NULL)
3474 {
3475 if (edir->dyn_relocs != NULL)
3476 {
3477 struct elf_dyn_relocs **pp;
3478 struct elf_dyn_relocs *p;
3479
3480 /* Add reloc counts against the indirect sym to the direct sym
3481 list. Merge any entries against the same section. */
3482 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
3483 {
3484 struct elf_dyn_relocs *q;
3485
3486 for (q = edir->dyn_relocs; q != NULL; q = q->next)
3487 if (q->sec == p->sec)
3488 {
3489 q->pc_count += p->pc_count;
3490 q->count += p->count;
3491 *pp = p->next;
3492 break;
3493 }
3494 if (q == NULL)
3495 pp = &p->next;
3496 }
3497 *pp = edir->dyn_relocs;
3498 }
3499
3500 edir->dyn_relocs = eind->dyn_relocs;
3501 eind->dyn_relocs = NULL;
3502 }
3503
3504 /* If we were called to copy over info for a weak sym, that's all.
3505 You might think dyn_relocs need not be copied over; After all,
3506 both syms will be dynamic or both non-dynamic so we're just
3507 moving reloc accounting around. However, ELIMINATE_COPY_RELOCS
3508 code in ppc_elf_adjust_dynamic_symbol needs to check for
3509 dyn_relocs in read-only sections, and it does so on what is the
3510 DIR sym here. */
3511 if (eind->elf.root.type != bfd_link_hash_indirect)
3512 return;
3513
3514 /* Copy over the GOT refcount entries that we may have already seen to
3515 the symbol which just became indirect. */
3516 edir->elf.got.refcount += eind->elf.got.refcount;
3517 eind->elf.got.refcount = 0;
3518
3519 /* And plt entries. */
3520 if (eind->elf.plt.plist != NULL)
3521 {
3522 if (edir->elf.plt.plist != NULL)
3523 {
3524 struct plt_entry **entp;
3525 struct plt_entry *ent;
3526
3527 for (entp = &eind->elf.plt.plist; (ent = *entp) != NULL; )
3528 {
3529 struct plt_entry *dent;
3530
3531 for (dent = edir->elf.plt.plist; dent != NULL; dent = dent->next)
3532 if (dent->sec == ent->sec && dent->addend == ent->addend)
3533 {
3534 dent->plt.refcount += ent->plt.refcount;
3535 *entp = ent->next;
3536 break;
3537 }
3538 if (dent == NULL)
3539 entp = &ent->next;
3540 }
3541 *entp = edir->elf.plt.plist;
3542 }
3543
3544 edir->elf.plt.plist = eind->elf.plt.plist;
3545 eind->elf.plt.plist = NULL;
3546 }
3547
3548 if (eind->elf.dynindx != -1)
3549 {
3550 if (edir->elf.dynindx != -1)
3551 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
3552 edir->elf.dynstr_index);
3553 edir->elf.dynindx = eind->elf.dynindx;
3554 edir->elf.dynstr_index = eind->elf.dynstr_index;
3555 eind->elf.dynindx = -1;
3556 eind->elf.dynstr_index = 0;
3557 }
3558 }
3559
3560 /* Hook called by the linker routine which adds symbols from an object
3561 file. We use it to put .comm items in .sbss, and not .bss. */
3562
3563 static bfd_boolean
3564 ppc_elf_add_symbol_hook (bfd *abfd,
3565 struct bfd_link_info *info,
3566 Elf_Internal_Sym *sym,
3567 const char **namep ATTRIBUTE_UNUSED,
3568 flagword *flagsp ATTRIBUTE_UNUSED,
3569 asection **secp,
3570 bfd_vma *valp)
3571 {
3572 if (sym->st_shndx == SHN_COMMON
3573 && !info->relocatable
3574 && is_ppc_elf (info->output_bfd)
3575 && sym->st_size <= elf_gp_size (abfd))
3576 {
3577 /* Common symbols less than or equal to -G nn bytes are automatically
3578 put into .sbss. */
3579 struct ppc_elf_link_hash_table *htab;
3580
3581 htab = ppc_elf_hash_table (info);
3582 if (htab->sbss == NULL)
3583 {
3584 flagword flags = SEC_IS_COMMON | SEC_LINKER_CREATED;
3585
3586 if (!htab->elf.dynobj)
3587 htab->elf.dynobj = abfd;
3588
3589 htab->sbss = bfd_make_section_anyway_with_flags (htab->elf.dynobj,
3590 ".sbss",
3591 flags);
3592 if (htab->sbss == NULL)
3593 return FALSE;
3594 }
3595
3596 *secp = htab->sbss;
3597 *valp = sym->st_size;
3598 }
3599
3600 if ((abfd->flags & DYNAMIC) == 0
3601 && (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC
3602 || ELF_ST_BIND (sym->st_info) == STB_GNU_UNIQUE))
3603 elf_tdata (info->output_bfd)->has_gnu_symbols = TRUE;
3604
3605 return TRUE;
3606 }
3607 \f
3608 static bfd_boolean
3609 create_sdata_sym (struct bfd_link_info *info, elf_linker_section_t *lsect)
3610 {
3611 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
3612
3613 lsect->sym = elf_link_hash_lookup (&htab->elf, lsect->sym_name,
3614 TRUE, FALSE, TRUE);
3615 if (lsect->sym == NULL)
3616 return FALSE;
3617 if (lsect->sym->root.type == bfd_link_hash_new)
3618 lsect->sym->non_elf = 0;
3619 lsect->sym->ref_regular = 1;
3620 _bfd_elf_link_hash_hide_symbol (info, lsect->sym, TRUE);
3621 return TRUE;
3622 }
3623
3624 /* Create a special linker section. */
3625
3626 static bfd_boolean
3627 ppc_elf_create_linker_section (bfd *abfd,
3628 struct bfd_link_info *info,
3629 flagword flags,
3630 elf_linker_section_t *lsect)
3631 {
3632 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
3633 asection *s;
3634
3635 flags |= (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
3636 | SEC_LINKER_CREATED);
3637
3638 /* Record the first bfd that needs the special sections. */
3639 if (!htab->elf.dynobj)
3640 htab->elf.dynobj = abfd;
3641
3642 s = bfd_make_section_anyway_with_flags (htab->elf.dynobj,
3643 lsect->name,
3644 flags);
3645 if (s == NULL
3646 || !bfd_set_section_alignment (htab->elf.dynobj, s, 2))
3647 return FALSE;
3648 lsect->section = s;
3649
3650 return create_sdata_sym (info, lsect);
3651 }
3652
3653 /* Find a linker generated pointer with a given addend and type. */
3654
3655 static elf_linker_section_pointers_t *
3656 elf_find_pointer_linker_section
3657 (elf_linker_section_pointers_t *linker_pointers,
3658 bfd_vma addend,
3659 elf_linker_section_t *lsect)
3660 {
3661 for ( ; linker_pointers != NULL; linker_pointers = linker_pointers->next)
3662 if (lsect == linker_pointers->lsect && addend == linker_pointers->addend)
3663 return linker_pointers;
3664
3665 return NULL;
3666 }
3667
3668 /* Allocate a pointer to live in a linker created section. */
3669
3670 static bfd_boolean
3671 elf_create_pointer_linker_section (bfd *abfd,
3672 elf_linker_section_t *lsect,
3673 struct elf_link_hash_entry *h,
3674 const Elf_Internal_Rela *rel)
3675 {
3676 elf_linker_section_pointers_t **ptr_linker_section_ptr = NULL;
3677 elf_linker_section_pointers_t *linker_section_ptr;
3678 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
3679 bfd_size_type amt;
3680
3681 BFD_ASSERT (lsect != NULL);
3682
3683 /* Is this a global symbol? */
3684 if (h != NULL)
3685 {
3686 struct ppc_elf_link_hash_entry *eh;
3687
3688 /* Has this symbol already been allocated? If so, our work is done. */
3689 eh = (struct ppc_elf_link_hash_entry *) h;
3690 if (elf_find_pointer_linker_section (eh->linker_section_pointer,
3691 rel->r_addend,
3692 lsect))
3693 return TRUE;
3694
3695 ptr_linker_section_ptr = &eh->linker_section_pointer;
3696 }
3697 else
3698 {
3699 BFD_ASSERT (is_ppc_elf (abfd));
3700
3701 /* Allocation of a pointer to a local symbol. */
3702 elf_linker_section_pointers_t **ptr = elf_local_ptr_offsets (abfd);
3703
3704 /* Allocate a table to hold the local symbols if first time. */
3705 if (!ptr)
3706 {
3707 unsigned int num_symbols = elf_symtab_hdr (abfd).sh_info;
3708
3709 amt = num_symbols;
3710 amt *= sizeof (elf_linker_section_pointers_t *);
3711 ptr = bfd_zalloc (abfd, amt);
3712
3713 if (!ptr)
3714 return FALSE;
3715
3716 elf_local_ptr_offsets (abfd) = ptr;
3717 }
3718
3719 /* Has this symbol already been allocated? If so, our work is done. */
3720 if (elf_find_pointer_linker_section (ptr[r_symndx],
3721 rel->r_addend,
3722 lsect))
3723 return TRUE;
3724
3725 ptr_linker_section_ptr = &ptr[r_symndx];
3726 }
3727
3728 /* Allocate space for a pointer in the linker section, and allocate
3729 a new pointer record from internal memory. */
3730 BFD_ASSERT (ptr_linker_section_ptr != NULL);
3731 amt = sizeof (elf_linker_section_pointers_t);
3732 linker_section_ptr = bfd_alloc (abfd, amt);
3733
3734 if (!linker_section_ptr)
3735 return FALSE;
3736
3737 linker_section_ptr->next = *ptr_linker_section_ptr;
3738 linker_section_ptr->addend = rel->r_addend;
3739 linker_section_ptr->lsect = lsect;
3740 *ptr_linker_section_ptr = linker_section_ptr;
3741
3742 linker_section_ptr->offset = lsect->section->size;
3743 lsect->section->size += 4;
3744
3745 #ifdef DEBUG
3746 fprintf (stderr,
3747 "Create pointer in linker section %s, offset = %ld, section size = %ld\n",
3748 lsect->name, (long) linker_section_ptr->offset,
3749 (long) lsect->section->size);
3750 #endif
3751
3752 return TRUE;
3753 }
3754
3755 static struct plt_entry **
3756 update_local_sym_info (bfd *abfd,
3757 Elf_Internal_Shdr *symtab_hdr,
3758 unsigned long r_symndx,
3759 int tls_type)
3760 {
3761 bfd_signed_vma *local_got_refcounts = elf_local_got_refcounts (abfd);
3762 struct plt_entry **local_plt;
3763 char *local_got_tls_masks;
3764
3765 if (local_got_refcounts == NULL)
3766 {
3767 bfd_size_type size = symtab_hdr->sh_info;
3768
3769 size *= (sizeof (*local_got_refcounts)
3770 + sizeof (*local_plt)
3771 + sizeof (*local_got_tls_masks));
3772 local_got_refcounts = bfd_zalloc (abfd, size);
3773 if (local_got_refcounts == NULL)
3774 return NULL;
3775 elf_local_got_refcounts (abfd) = local_got_refcounts;
3776 }
3777
3778 local_plt = (struct plt_entry **) (local_got_refcounts + symtab_hdr->sh_info);
3779 local_got_tls_masks = (char *) (local_plt + symtab_hdr->sh_info);
3780 local_got_tls_masks[r_symndx] |= tls_type;
3781 if (tls_type != PLT_IFUNC)
3782 local_got_refcounts[r_symndx] += 1;
3783 return local_plt + r_symndx;
3784 }
3785
3786 static bfd_boolean
3787 update_plt_info (bfd *abfd, struct plt_entry **plist,
3788 asection *sec, bfd_vma addend)
3789 {
3790 struct plt_entry *ent;
3791
3792 if (addend < 32768)
3793 sec = NULL;
3794 for (ent = *plist; ent != NULL; ent = ent->next)
3795 if (ent->sec == sec && ent->addend == addend)
3796 break;
3797 if (ent == NULL)
3798 {
3799 bfd_size_type amt = sizeof (*ent);
3800 ent = bfd_alloc (abfd, amt);
3801 if (ent == NULL)
3802 return FALSE;
3803 ent->next = *plist;
3804 ent->sec = sec;
3805 ent->addend = addend;
3806 ent->plt.refcount = 0;
3807 *plist = ent;
3808 }
3809 ent->plt.refcount += 1;
3810 return TRUE;
3811 }
3812
3813 static struct plt_entry *
3814 find_plt_ent (struct plt_entry **plist, asection *sec, bfd_vma addend)
3815 {
3816 struct plt_entry *ent;
3817
3818 if (addend < 32768)
3819 sec = NULL;
3820 for (ent = *plist; ent != NULL; ent = ent->next)
3821 if (ent->sec == sec && ent->addend == addend)
3822 break;
3823 return ent;
3824 }
3825
3826 static bfd_boolean
3827 is_branch_reloc (enum elf_ppc_reloc_type r_type)
3828 {
3829 return (r_type == R_PPC_PLTREL24
3830 || r_type == R_PPC_LOCAL24PC
3831 || r_type == R_PPC_REL24
3832 || r_type == R_PPC_REL14
3833 || r_type == R_PPC_REL14_BRTAKEN
3834 || r_type == R_PPC_REL14_BRNTAKEN
3835 || r_type == R_PPC_ADDR24
3836 || r_type == R_PPC_ADDR14
3837 || r_type == R_PPC_ADDR14_BRTAKEN
3838 || r_type == R_PPC_ADDR14_BRNTAKEN);
3839 }
3840
3841 static void
3842 bad_shared_reloc (bfd *abfd, enum elf_ppc_reloc_type r_type)
3843 {
3844 (*_bfd_error_handler)
3845 (_("%B: relocation %s cannot be used when making a shared object"),
3846 abfd,
3847 ppc_elf_howto_table[r_type]->name);
3848 bfd_set_error (bfd_error_bad_value);
3849 }
3850
3851 /* Look through the relocs for a section during the first phase, and
3852 allocate space in the global offset table or procedure linkage
3853 table. */
3854
3855 static bfd_boolean
3856 ppc_elf_check_relocs (bfd *abfd,
3857 struct bfd_link_info *info,
3858 asection *sec,
3859 const Elf_Internal_Rela *relocs)
3860 {
3861 struct ppc_elf_link_hash_table *htab;
3862 Elf_Internal_Shdr *symtab_hdr;
3863 struct elf_link_hash_entry **sym_hashes;
3864 const Elf_Internal_Rela *rel;
3865 const Elf_Internal_Rela *rel_end;
3866 asection *got2, *sreloc;
3867 struct elf_link_hash_entry *tga;
3868
3869 if (info->relocatable)
3870 return TRUE;
3871
3872 /* Don't do anything special with non-loaded, non-alloced sections.
3873 In particular, any relocs in such sections should not affect GOT
3874 and PLT reference counting (ie. we don't allow them to create GOT
3875 or PLT entries), there's no possibility or desire to optimize TLS
3876 relocs, and there's not much point in propagating relocs to shared
3877 libs that the dynamic linker won't relocate. */
3878 if ((sec->flags & SEC_ALLOC) == 0)
3879 return TRUE;
3880
3881 #ifdef DEBUG
3882 _bfd_error_handler ("ppc_elf_check_relocs called for section %A in %B",
3883 sec, abfd);
3884 #endif
3885
3886 BFD_ASSERT (is_ppc_elf (abfd));
3887
3888 /* Initialize howto table if not already done. */
3889 if (!ppc_elf_howto_table[R_PPC_ADDR32])
3890 ppc_elf_howto_init ();
3891
3892 htab = ppc_elf_hash_table (info);
3893 if (htab->glink == NULL)
3894 {
3895 if (htab->elf.dynobj == NULL)
3896 htab->elf.dynobj = abfd;
3897 if (!ppc_elf_create_glink (htab->elf.dynobj, info))
3898 return FALSE;
3899 }
3900 tga = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
3901 FALSE, FALSE, TRUE);
3902 symtab_hdr = &elf_symtab_hdr (abfd);
3903 sym_hashes = elf_sym_hashes (abfd);
3904 got2 = bfd_get_section_by_name (abfd, ".got2");
3905 sreloc = NULL;
3906
3907 rel_end = relocs + sec->reloc_count;
3908 for (rel = relocs; rel < rel_end; rel++)
3909 {
3910 unsigned long r_symndx;
3911 enum elf_ppc_reloc_type r_type;
3912 struct elf_link_hash_entry *h;
3913 int tls_type;
3914
3915 r_symndx = ELF32_R_SYM (rel->r_info);
3916 if (r_symndx < symtab_hdr->sh_info)
3917 h = NULL;
3918 else
3919 {
3920 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3921 while (h->root.type == bfd_link_hash_indirect
3922 || h->root.type == bfd_link_hash_warning)
3923 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3924
3925 /* PR15323, ref flags aren't set for references in the same
3926 object. */
3927 h->root.non_ir_ref = 1;
3928 }
3929
3930 /* If a relocation refers to _GLOBAL_OFFSET_TABLE_, create the .got.
3931 This shows up in particular in an R_PPC_ADDR32 in the eabi
3932 startup code. */
3933 if (h != NULL
3934 && htab->got == NULL
3935 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
3936 {
3937 if (htab->elf.dynobj == NULL)
3938 htab->elf.dynobj = abfd;
3939 if (!ppc_elf_create_got (htab->elf.dynobj, info))
3940 return FALSE;
3941 BFD_ASSERT (h == htab->elf.hgot);
3942 }
3943
3944 tls_type = 0;
3945 r_type = ELF32_R_TYPE (rel->r_info);
3946 if (h == NULL && !htab->is_vxworks)
3947 {
3948 Elf_Internal_Sym *isym = bfd_sym_from_r_symndx (&htab->sym_cache,
3949 abfd, r_symndx);
3950 if (isym == NULL)
3951 return FALSE;
3952
3953 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
3954 {
3955 struct plt_entry **ifunc;
3956
3957 /* Set PLT_IFUNC flag for this sym, no GOT entry yet. */
3958 ifunc = update_local_sym_info (abfd, symtab_hdr, r_symndx,
3959 PLT_IFUNC);
3960 if (ifunc == NULL)
3961 return FALSE;
3962
3963 /* STT_GNU_IFUNC symbols must have a PLT entry;
3964 In a non-pie executable even when there are
3965 no plt calls. */
3966 if (!info->shared
3967 || is_branch_reloc (r_type))
3968 {
3969 bfd_vma addend = 0;
3970 if (r_type == R_PPC_PLTREL24)
3971 {
3972 ppc_elf_tdata (abfd)->makes_plt_call = 1;
3973 if (info->shared)
3974 addend = rel->r_addend;
3975 }
3976 if (!update_plt_info (abfd, ifunc, got2, addend))
3977 return FALSE;
3978 }
3979 }
3980 }
3981
3982 if (!htab->is_vxworks
3983 && is_branch_reloc (r_type)
3984 && h != NULL
3985 && h == tga)
3986 {
3987 if (rel != relocs
3988 && (ELF32_R_TYPE (rel[-1].r_info) == R_PPC_TLSGD
3989 || ELF32_R_TYPE (rel[-1].r_info) == R_PPC_TLSLD))
3990 /* We have a new-style __tls_get_addr call with a marker
3991 reloc. */
3992 ;
3993 else
3994 /* Mark this section as having an old-style call. */
3995 sec->has_tls_get_addr_call = 1;
3996 }
3997
3998 switch (r_type)
3999 {
4000 case R_PPC_TLSGD:
4001 case R_PPC_TLSLD:
4002 /* These special tls relocs tie a call to __tls_get_addr with
4003 its parameter symbol. */
4004 break;
4005
4006 case R_PPC_GOT_TLSLD16:
4007 case R_PPC_GOT_TLSLD16_LO:
4008 case R_PPC_GOT_TLSLD16_HI:
4009 case R_PPC_GOT_TLSLD16_HA:
4010 tls_type = TLS_TLS | TLS_LD;
4011 goto dogottls;
4012
4013 case R_PPC_GOT_TLSGD16:
4014 case R_PPC_GOT_TLSGD16_LO:
4015 case R_PPC_GOT_TLSGD16_HI:
4016 case R_PPC_GOT_TLSGD16_HA:
4017 tls_type = TLS_TLS | TLS_GD;
4018 goto dogottls;
4019
4020 case R_PPC_GOT_TPREL16:
4021 case R_PPC_GOT_TPREL16_LO:
4022 case R_PPC_GOT_TPREL16_HI:
4023 case R_PPC_GOT_TPREL16_HA:
4024 if (!info->executable)
4025 info->flags |= DF_STATIC_TLS;
4026 tls_type = TLS_TLS | TLS_TPREL;
4027 goto dogottls;
4028
4029 case R_PPC_GOT_DTPREL16:
4030 case R_PPC_GOT_DTPREL16_LO:
4031 case R_PPC_GOT_DTPREL16_HI:
4032 case R_PPC_GOT_DTPREL16_HA:
4033 tls_type = TLS_TLS | TLS_DTPREL;
4034 dogottls:
4035 sec->has_tls_reloc = 1;
4036 /* Fall thru */
4037
4038 /* GOT16 relocations */
4039 case R_PPC_GOT16:
4040 case R_PPC_GOT16_LO:
4041 case R_PPC_GOT16_HI:
4042 case R_PPC_GOT16_HA:
4043 /* This symbol requires a global offset table entry. */
4044 if (htab->got == NULL)
4045 {
4046 if (htab->elf.dynobj == NULL)
4047 htab->elf.dynobj = abfd;
4048 if (!ppc_elf_create_got (htab->elf.dynobj, info))
4049 return FALSE;
4050 }
4051 if (h != NULL)
4052 {
4053 h->got.refcount += 1;
4054 ppc_elf_hash_entry (h)->tls_mask |= tls_type;
4055 }
4056 else
4057 /* This is a global offset table entry for a local symbol. */
4058 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, tls_type))
4059 return FALSE;
4060
4061 /* We may also need a plt entry if the symbol turns out to be
4062 an ifunc. */
4063 if (h != NULL && !info->shared)
4064 {
4065 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
4066 return FALSE;
4067 }
4068 break;
4069
4070 /* Indirect .sdata relocation. */
4071 case R_PPC_EMB_SDAI16:
4072 if (info->shared)
4073 {
4074 bad_shared_reloc (abfd, r_type);
4075 return FALSE;
4076 }
4077 if (htab->sdata[0].section == NULL
4078 && !ppc_elf_create_linker_section (abfd, info, 0,
4079 &htab->sdata[0]))
4080 return FALSE;
4081 if (!elf_create_pointer_linker_section (abfd, &htab->sdata[0],
4082 h, rel))
4083 return FALSE;
4084 if (h != NULL)
4085 {
4086 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4087 h->non_got_ref = TRUE;
4088 }
4089 break;
4090
4091 /* Indirect .sdata2 relocation. */
4092 case R_PPC_EMB_SDA2I16:
4093 if (info->shared)
4094 {
4095 bad_shared_reloc (abfd, r_type);
4096 return FALSE;
4097 }
4098 if (htab->sdata[1].section == NULL
4099 && !ppc_elf_create_linker_section (abfd, info, SEC_READONLY,
4100 &htab->sdata[1]))
4101 return FALSE;
4102 if (!elf_create_pointer_linker_section (abfd, &htab->sdata[1],
4103 h, rel))
4104 return FALSE;
4105 if (h != NULL)
4106 {
4107 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4108 h->non_got_ref = TRUE;
4109 }
4110 break;
4111
4112 case R_PPC_VLE_SDAREL_LO16A:
4113 case R_PPC_VLE_SDAREL_LO16D:
4114 case R_PPC_VLE_SDAREL_HI16A:
4115 case R_PPC_VLE_SDAREL_HI16D:
4116 case R_PPC_VLE_SDAREL_HA16A:
4117 case R_PPC_VLE_SDAREL_HA16D:
4118 case R_PPC_SDAREL16:
4119 if (htab->sdata[0].sym == NULL
4120 && !create_sdata_sym (info, &htab->sdata[0]))
4121 return FALSE;
4122
4123 if (htab->sdata[1].sym == NULL
4124 && !create_sdata_sym (info, &htab->sdata[1]))
4125 return FALSE;
4126
4127 if (h != NULL)
4128 {
4129 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4130 h->non_got_ref = TRUE;
4131 }
4132 break;
4133
4134 case R_PPC_VLE_REL8:
4135 case R_PPC_VLE_REL15:
4136 case R_PPC_VLE_REL24:
4137 case R_PPC_VLE_LO16A:
4138 case R_PPC_VLE_LO16D:
4139 case R_PPC_VLE_HI16A:
4140 case R_PPC_VLE_HI16D:
4141 case R_PPC_VLE_HA16A:
4142 case R_PPC_VLE_HA16D:
4143 break;
4144
4145 case R_PPC_EMB_SDA2REL:
4146 if (info->shared)
4147 {
4148 bad_shared_reloc (abfd, r_type);
4149 return FALSE;
4150 }
4151 if (htab->sdata[1].sym == NULL
4152 && !create_sdata_sym (info, &htab->sdata[1]))
4153 return FALSE;
4154 if (h != NULL)
4155 {
4156 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4157 h->non_got_ref = TRUE;
4158 }
4159 break;
4160
4161 case R_PPC_VLE_SDA21_LO:
4162 case R_PPC_VLE_SDA21:
4163 case R_PPC_EMB_SDA21:
4164 case R_PPC_EMB_RELSDA:
4165 if (info->shared)
4166 {
4167 bad_shared_reloc (abfd, r_type);
4168 return FALSE;
4169 }
4170 if (htab->sdata[0].sym == NULL
4171 && !create_sdata_sym (info, &htab->sdata[0]))
4172 return FALSE;
4173 if (htab->sdata[1].sym == NULL
4174 && !create_sdata_sym (info, &htab->sdata[1]))
4175 return FALSE;
4176 if (h != NULL)
4177 {
4178 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4179 h->non_got_ref = TRUE;
4180 }
4181 break;
4182
4183 case R_PPC_EMB_NADDR32:
4184 case R_PPC_EMB_NADDR16:
4185 case R_PPC_EMB_NADDR16_LO:
4186 case R_PPC_EMB_NADDR16_HI:
4187 case R_PPC_EMB_NADDR16_HA:
4188 if (info->shared)
4189 {
4190 bad_shared_reloc (abfd, r_type);
4191 return FALSE;
4192 }
4193 if (h != NULL)
4194 h->non_got_ref = TRUE;
4195 break;
4196
4197 case R_PPC_PLTREL24:
4198 if (h == NULL)
4199 break;
4200 /* Fall through */
4201 case R_PPC_PLT32:
4202 case R_PPC_PLTREL32:
4203 case R_PPC_PLT16_LO:
4204 case R_PPC_PLT16_HI:
4205 case R_PPC_PLT16_HA:
4206 #ifdef DEBUG
4207 fprintf (stderr, "Reloc requires a PLT entry\n");
4208 #endif
4209 /* This symbol requires a procedure linkage table entry. We
4210 actually build the entry in finish_dynamic_symbol,
4211 because this might be a case of linking PIC code without
4212 linking in any dynamic objects, in which case we don't
4213 need to generate a procedure linkage table after all. */
4214
4215 if (h == NULL)
4216 {
4217 /* It does not make sense to have a procedure linkage
4218 table entry for a local symbol. */
4219 info->callbacks->einfo (_("%P: %H: %s reloc against local symbol\n"),
4220 abfd, sec, rel->r_offset,
4221 ppc_elf_howto_table[r_type]->name);
4222 bfd_set_error (bfd_error_bad_value);
4223 return FALSE;
4224 }
4225 else
4226 {
4227 bfd_vma addend = 0;
4228
4229 if (r_type == R_PPC_PLTREL24)
4230 {
4231 ppc_elf_tdata (abfd)->makes_plt_call = 1;
4232 if (info->shared)
4233 addend = rel->r_addend;
4234 }
4235 h->needs_plt = 1;
4236 if (!update_plt_info (abfd, &h->plt.plist, got2, addend))
4237 return FALSE;
4238 }
4239 break;
4240
4241 /* The following relocations don't need to propagate the
4242 relocation if linking a shared object since they are
4243 section relative. */
4244 case R_PPC_SECTOFF:
4245 case R_PPC_SECTOFF_LO:
4246 case R_PPC_SECTOFF_HI:
4247 case R_PPC_SECTOFF_HA:
4248 case R_PPC_DTPREL16:
4249 case R_PPC_DTPREL16_LO:
4250 case R_PPC_DTPREL16_HI:
4251 case R_PPC_DTPREL16_HA:
4252 case R_PPC_TOC16:
4253 break;
4254
4255 case R_PPC_REL16:
4256 case R_PPC_REL16_LO:
4257 case R_PPC_REL16_HI:
4258 case R_PPC_REL16_HA:
4259 ppc_elf_tdata (abfd)->has_rel16 = 1;
4260 break;
4261
4262 /* These are just markers. */
4263 case R_PPC_TLS:
4264 case R_PPC_EMB_MRKREF:
4265 case R_PPC_NONE:
4266 case R_PPC_max:
4267 case R_PPC_RELAX:
4268 case R_PPC_RELAX_PLT:
4269 case R_PPC_RELAX_PLTREL24:
4270 break;
4271
4272 /* These should only appear in dynamic objects. */
4273 case R_PPC_COPY:
4274 case R_PPC_GLOB_DAT:
4275 case R_PPC_JMP_SLOT:
4276 case R_PPC_RELATIVE:
4277 case R_PPC_IRELATIVE:
4278 break;
4279
4280 /* These aren't handled yet. We'll report an error later. */
4281 case R_PPC_ADDR30:
4282 case R_PPC_EMB_RELSEC16:
4283 case R_PPC_EMB_RELST_LO:
4284 case R_PPC_EMB_RELST_HI:
4285 case R_PPC_EMB_RELST_HA:
4286 case R_PPC_EMB_BIT_FLD:
4287 break;
4288
4289 /* This refers only to functions defined in the shared library. */
4290 case R_PPC_LOCAL24PC:
4291 if (h != NULL && h == htab->elf.hgot && htab->plt_type == PLT_UNSET)
4292 {
4293 htab->plt_type = PLT_OLD;
4294 htab->old_bfd = abfd;
4295 }
4296 if (h != NULL && h->type == STT_GNU_IFUNC)
4297 {
4298 if (info->shared)
4299 {
4300 info->callbacks->einfo (_("%P: %H: @local call to ifunc %s\n"),
4301 abfd, sec, rel->r_offset,
4302 h->root.root.string);
4303 bfd_set_error (bfd_error_bad_value);
4304 return FALSE;
4305 }
4306 h->needs_plt = 1;
4307 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
4308 return FALSE;
4309 }
4310 break;
4311
4312 /* This relocation describes the C++ object vtable hierarchy.
4313 Reconstruct it for later use during GC. */
4314 case R_PPC_GNU_VTINHERIT:
4315 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
4316 return FALSE;
4317 break;
4318
4319 /* This relocation describes which C++ vtable entries are actually
4320 used. Record for later use during GC. */
4321 case R_PPC_GNU_VTENTRY:
4322 BFD_ASSERT (h != NULL);
4323 if (h != NULL
4324 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
4325 return FALSE;
4326 break;
4327
4328 /* We shouldn't really be seeing these. */
4329 case R_PPC_TPREL32:
4330 case R_PPC_TPREL16:
4331 case R_PPC_TPREL16_LO:
4332 case R_PPC_TPREL16_HI:
4333 case R_PPC_TPREL16_HA:
4334 if (!info->executable)
4335 info->flags |= DF_STATIC_TLS;
4336 goto dodyn;
4337
4338 /* Nor these. */
4339 case R_PPC_DTPMOD32:
4340 case R_PPC_DTPREL32:
4341 goto dodyn;
4342
4343 case R_PPC_REL32:
4344 if (h == NULL
4345 && got2 != NULL
4346 && (sec->flags & SEC_CODE) != 0
4347 && info->shared
4348 && htab->plt_type == PLT_UNSET)
4349 {
4350 /* Old -fPIC gcc code has .long LCTOC1-LCFx just before
4351 the start of a function, which assembles to a REL32
4352 reference to .got2. If we detect one of these, then
4353 force the old PLT layout because the linker cannot
4354 reliably deduce the GOT pointer value needed for
4355 PLT call stubs. */
4356 asection *s;
4357 Elf_Internal_Sym *isym;
4358
4359 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
4360 abfd, r_symndx);
4361 if (isym == NULL)
4362 return FALSE;
4363
4364 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
4365 if (s == got2)
4366 {
4367 htab->plt_type = PLT_OLD;
4368 htab->old_bfd = abfd;
4369 }
4370 }
4371 if (h == NULL || h == htab->elf.hgot)
4372 break;
4373 /* fall through */
4374
4375 case R_PPC_ADDR32:
4376 case R_PPC_ADDR16:
4377 case R_PPC_ADDR16_LO:
4378 case R_PPC_ADDR16_HI:
4379 case R_PPC_ADDR16_HA:
4380 case R_PPC_UADDR32:
4381 case R_PPC_UADDR16:
4382 if (h != NULL && !info->shared)
4383 {
4384 /* We may need a plt entry if the symbol turns out to be
4385 a function defined in a dynamic object. */
4386 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
4387 return FALSE;
4388
4389 /* We may need a copy reloc too. */
4390 h->non_got_ref = 1;
4391 h->pointer_equality_needed = 1;
4392 }
4393 goto dodyn;
4394
4395 case R_PPC_REL24:
4396 case R_PPC_REL14:
4397 case R_PPC_REL14_BRTAKEN:
4398 case R_PPC_REL14_BRNTAKEN:
4399 if (h == NULL)
4400 break;
4401 if (h == htab->elf.hgot)
4402 {
4403 if (htab->plt_type == PLT_UNSET)
4404 {
4405 htab->plt_type = PLT_OLD;
4406 htab->old_bfd = abfd;
4407 }
4408 break;
4409 }
4410 /* fall through */
4411
4412 case R_PPC_ADDR24:
4413 case R_PPC_ADDR14:
4414 case R_PPC_ADDR14_BRTAKEN:
4415 case R_PPC_ADDR14_BRNTAKEN:
4416 if (h != NULL && !info->shared)
4417 {
4418 /* We may need a plt entry if the symbol turns out to be
4419 a function defined in a dynamic object. */
4420 h->needs_plt = 1;
4421 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
4422 return FALSE;
4423 break;
4424 }
4425
4426 dodyn:
4427 /* If we are creating a shared library, and this is a reloc
4428 against a global symbol, or a non PC relative reloc
4429 against a local symbol, then we need to copy the reloc
4430 into the shared library. However, if we are linking with
4431 -Bsymbolic, we do not need to copy a reloc against a
4432 global symbol which is defined in an object we are
4433 including in the link (i.e., DEF_REGULAR is set). At
4434 this point we have not seen all the input files, so it is
4435 possible that DEF_REGULAR is not set now but will be set
4436 later (it is never cleared). In case of a weak definition,
4437 DEF_REGULAR may be cleared later by a strong definition in
4438 a shared library. We account for that possibility below by
4439 storing information in the dyn_relocs field of the hash
4440 table entry. A similar situation occurs when creating
4441 shared libraries and symbol visibility changes render the
4442 symbol local.
4443
4444 If on the other hand, we are creating an executable, we
4445 may need to keep relocations for symbols satisfied by a
4446 dynamic library if we manage to avoid copy relocs for the
4447 symbol. */
4448 if ((info->shared
4449 && (must_be_dyn_reloc (info, r_type)
4450 || (h != NULL
4451 && (!SYMBOLIC_BIND (info, h)
4452 || h->root.type == bfd_link_hash_defweak
4453 || !h->def_regular))))
4454 || (ELIMINATE_COPY_RELOCS
4455 && !info->shared
4456 && h != NULL
4457 && (h->root.type == bfd_link_hash_defweak
4458 || !h->def_regular)))
4459 {
4460 #ifdef DEBUG
4461 fprintf (stderr,
4462 "ppc_elf_check_relocs needs to "
4463 "create relocation for %s\n",
4464 (h && h->root.root.string
4465 ? h->root.root.string : "<unknown>"));
4466 #endif
4467 if (sreloc == NULL)
4468 {
4469 if (htab->elf.dynobj == NULL)
4470 htab->elf.dynobj = abfd;
4471
4472 sreloc = _bfd_elf_make_dynamic_reloc_section
4473 (sec, htab->elf.dynobj, 2, abfd, /*rela?*/ TRUE);
4474
4475 if (sreloc == NULL)
4476 return FALSE;
4477 }
4478
4479 /* If this is a global symbol, we count the number of
4480 relocations we need for this symbol. */
4481 if (h != NULL)
4482 {
4483 struct elf_dyn_relocs *p;
4484 struct elf_dyn_relocs **rel_head;
4485
4486 rel_head = &ppc_elf_hash_entry (h)->dyn_relocs;
4487 p = *rel_head;
4488 if (p == NULL || p->sec != sec)
4489 {
4490 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
4491 if (p == NULL)
4492 return FALSE;
4493 p->next = *rel_head;
4494 *rel_head = p;
4495 p->sec = sec;
4496 p->count = 0;
4497 p->pc_count = 0;
4498 }
4499 p->count += 1;
4500 if (!must_be_dyn_reloc (info, r_type))
4501 p->pc_count += 1;
4502 }
4503 else
4504 {
4505 /* Track dynamic relocs needed for local syms too.
4506 We really need local syms available to do this
4507 easily. Oh well. */
4508 struct ppc_dyn_relocs *p;
4509 struct ppc_dyn_relocs **rel_head;
4510 bfd_boolean is_ifunc;
4511 asection *s;
4512 void *vpp;
4513 Elf_Internal_Sym *isym;
4514
4515 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
4516 abfd, r_symndx);
4517 if (isym == NULL)
4518 return FALSE;
4519
4520 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
4521 if (s == NULL)
4522 s = sec;
4523
4524 vpp = &elf_section_data (s)->local_dynrel;
4525 rel_head = (struct ppc_dyn_relocs **) vpp;
4526 is_ifunc = ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC;
4527 p = *rel_head;
4528 if (p != NULL && p->sec == sec && p->ifunc != is_ifunc)
4529 p = p->next;
4530 if (p == NULL || p->sec != sec || p->ifunc != is_ifunc)
4531 {
4532 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
4533 if (p == NULL)
4534 return FALSE;
4535 p->next = *rel_head;
4536 *rel_head = p;
4537 p->sec = sec;
4538 p->ifunc = is_ifunc;
4539 p->count = 0;
4540 }
4541 p->count += 1;
4542 }
4543 }
4544
4545 break;
4546 }
4547 }
4548
4549 return TRUE;
4550 }
4551 \f
4552
4553 /* Merge object attributes from IBFD into OBFD. Raise an error if
4554 there are conflicting attributes. */
4555 static bfd_boolean
4556 ppc_elf_merge_obj_attributes (bfd *ibfd, bfd *obfd)
4557 {
4558 obj_attribute *in_attr, *in_attrs;
4559 obj_attribute *out_attr, *out_attrs;
4560
4561 if (!elf_known_obj_attributes_proc (obfd)[0].i)
4562 {
4563 /* This is the first object. Copy the attributes. */
4564 _bfd_elf_copy_obj_attributes (ibfd, obfd);
4565
4566 /* Use the Tag_null value to indicate the attributes have been
4567 initialized. */
4568 elf_known_obj_attributes_proc (obfd)[0].i = 1;
4569
4570 return TRUE;
4571 }
4572
4573 in_attrs = elf_known_obj_attributes (ibfd)[OBJ_ATTR_GNU];
4574 out_attrs = elf_known_obj_attributes (obfd)[OBJ_ATTR_GNU];
4575
4576 /* Check for conflicting Tag_GNU_Power_ABI_FP attributes and merge
4577 non-conflicting ones. */
4578 in_attr = &in_attrs[Tag_GNU_Power_ABI_FP];
4579 out_attr = &out_attrs[Tag_GNU_Power_ABI_FP];
4580 if (in_attr->i != out_attr->i)
4581 {
4582 out_attr->type = 1;
4583 if (out_attr->i == 0)
4584 out_attr->i = in_attr->i;
4585 else if (in_attr->i == 0)
4586 ;
4587 else if (out_attr->i == 1 && in_attr->i == 2)
4588 _bfd_error_handler
4589 (_("Warning: %B uses hard float, %B uses soft float"), obfd, ibfd);
4590 else if (out_attr->i == 1 && in_attr->i == 3)
4591 _bfd_error_handler
4592 (_("Warning: %B uses double-precision hard float, %B uses single-precision hard float"),
4593 obfd, ibfd);
4594 else if (out_attr->i == 3 && in_attr->i == 1)
4595 _bfd_error_handler
4596 (_("Warning: %B uses double-precision hard float, %B uses single-precision hard float"),
4597 ibfd, obfd);
4598 else if (out_attr->i == 3 && in_attr->i == 2)
4599 _bfd_error_handler
4600 (_("Warning: %B uses soft float, %B uses single-precision hard float"),
4601 ibfd, obfd);
4602 else if (out_attr->i == 2 && (in_attr->i == 1 || in_attr->i == 3))
4603 _bfd_error_handler
4604 (_("Warning: %B uses hard float, %B uses soft float"), ibfd, obfd);
4605 else if (in_attr->i > 3)
4606 _bfd_error_handler
4607 (_("Warning: %B uses unknown floating point ABI %d"), ibfd,
4608 in_attr->i);
4609 else
4610 _bfd_error_handler
4611 (_("Warning: %B uses unknown floating point ABI %d"), obfd,
4612 out_attr->i);
4613 }
4614
4615 /* Check for conflicting Tag_GNU_Power_ABI_Vector attributes and
4616 merge non-conflicting ones. */
4617 in_attr = &in_attrs[Tag_GNU_Power_ABI_Vector];
4618 out_attr = &out_attrs[Tag_GNU_Power_ABI_Vector];
4619 if (in_attr->i != out_attr->i)
4620 {
4621 const char *in_abi = NULL, *out_abi = NULL;
4622
4623 switch (in_attr->i)
4624 {
4625 case 1: in_abi = "generic"; break;
4626 case 2: in_abi = "AltiVec"; break;
4627 case 3: in_abi = "SPE"; break;
4628 }
4629
4630 switch (out_attr->i)
4631 {
4632 case 1: out_abi = "generic"; break;
4633 case 2: out_abi = "AltiVec"; break;
4634 case 3: out_abi = "SPE"; break;
4635 }
4636
4637 out_attr->type = 1;
4638 if (out_attr->i == 0)
4639 out_attr->i = in_attr->i;
4640 else if (in_attr->i == 0)
4641 ;
4642 /* For now, allow generic to transition to AltiVec or SPE
4643 without a warning. If GCC marked files with their stack
4644 alignment and used don't-care markings for files which are
4645 not affected by the vector ABI, we could warn about this
4646 case too. */
4647 else if (out_attr->i == 1)
4648 out_attr->i = in_attr->i;
4649 else if (in_attr->i == 1)
4650 ;
4651 else if (in_abi == NULL)
4652 _bfd_error_handler
4653 (_("Warning: %B uses unknown vector ABI %d"), ibfd,
4654 in_attr->i);
4655 else if (out_abi == NULL)
4656 _bfd_error_handler
4657 (_("Warning: %B uses unknown vector ABI %d"), obfd,
4658 in_attr->i);
4659 else
4660 _bfd_error_handler
4661 (_("Warning: %B uses vector ABI \"%s\", %B uses \"%s\""),
4662 ibfd, obfd, in_abi, out_abi);
4663 }
4664
4665 /* Check for conflicting Tag_GNU_Power_ABI_Struct_Return attributes
4666 and merge non-conflicting ones. */
4667 in_attr = &in_attrs[Tag_GNU_Power_ABI_Struct_Return];
4668 out_attr = &out_attrs[Tag_GNU_Power_ABI_Struct_Return];
4669 if (in_attr->i != out_attr->i)
4670 {
4671 out_attr->type = 1;
4672 if (out_attr->i == 0)
4673 out_attr->i = in_attr->i;
4674 else if (in_attr->i == 0)
4675 ;
4676 else if (out_attr->i == 1 && in_attr->i == 2)
4677 _bfd_error_handler
4678 (_("Warning: %B uses r3/r4 for small structure returns, %B uses memory"), obfd, ibfd);
4679 else if (out_attr->i == 2 && in_attr->i == 1)
4680 _bfd_error_handler
4681 (_("Warning: %B uses r3/r4 for small structure returns, %B uses memory"), ibfd, obfd);
4682 else if (in_attr->i > 2)
4683 _bfd_error_handler
4684 (_("Warning: %B uses unknown small structure return convention %d"), ibfd,
4685 in_attr->i);
4686 else
4687 _bfd_error_handler
4688 (_("Warning: %B uses unknown small structure return convention %d"), obfd,
4689 out_attr->i);
4690 }
4691
4692 /* Merge Tag_compatibility attributes and any common GNU ones. */
4693 _bfd_elf_merge_object_attributes (ibfd, obfd);
4694
4695 return TRUE;
4696 }
4697
4698 /* Merge backend specific data from an object file to the output
4699 object file when linking. */
4700
4701 static bfd_boolean
4702 ppc_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
4703 {
4704 flagword old_flags;
4705 flagword new_flags;
4706 bfd_boolean error;
4707
4708 if (!is_ppc_elf (ibfd) || !is_ppc_elf (obfd))
4709 return TRUE;
4710
4711 /* Check if we have the same endianness. */
4712 if (! _bfd_generic_verify_endian_match (ibfd, obfd))
4713 return FALSE;
4714
4715 if (!ppc_elf_merge_obj_attributes (ibfd, obfd))
4716 return FALSE;
4717
4718 new_flags = elf_elfheader (ibfd)->e_flags;
4719 old_flags = elf_elfheader (obfd)->e_flags;
4720 if (!elf_flags_init (obfd))
4721 {
4722 /* First call, no flags set. */
4723 elf_flags_init (obfd) = TRUE;
4724 elf_elfheader (obfd)->e_flags = new_flags;
4725 }
4726
4727 /* Compatible flags are ok. */
4728 else if (new_flags == old_flags)
4729 ;
4730
4731 /* Incompatible flags. */
4732 else
4733 {
4734 /* Warn about -mrelocatable mismatch. Allow -mrelocatable-lib
4735 to be linked with either. */
4736 error = FALSE;
4737 if ((new_flags & EF_PPC_RELOCATABLE) != 0
4738 && (old_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0)
4739 {
4740 error = TRUE;
4741 (*_bfd_error_handler)
4742 (_("%B: compiled with -mrelocatable and linked with "
4743 "modules compiled normally"), ibfd);
4744 }
4745 else if ((new_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0
4746 && (old_flags & EF_PPC_RELOCATABLE) != 0)
4747 {
4748 error = TRUE;
4749 (*_bfd_error_handler)
4750 (_("%B: compiled normally and linked with "
4751 "modules compiled with -mrelocatable"), ibfd);
4752 }
4753
4754 /* The output is -mrelocatable-lib iff both the input files are. */
4755 if (! (new_flags & EF_PPC_RELOCATABLE_LIB))
4756 elf_elfheader (obfd)->e_flags &= ~EF_PPC_RELOCATABLE_LIB;
4757
4758 /* The output is -mrelocatable iff it can't be -mrelocatable-lib,
4759 but each input file is either -mrelocatable or -mrelocatable-lib. */
4760 if (! (elf_elfheader (obfd)->e_flags & EF_PPC_RELOCATABLE_LIB)
4761 && (new_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE))
4762 && (old_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE)))
4763 elf_elfheader (obfd)->e_flags |= EF_PPC_RELOCATABLE;
4764
4765 /* Do not warn about eabi vs. V.4 mismatch, just or in the bit if
4766 any module uses it. */
4767 elf_elfheader (obfd)->e_flags |= (new_flags & EF_PPC_EMB);
4768
4769 new_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
4770 old_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
4771
4772 /* Warn about any other mismatches. */
4773 if (new_flags != old_flags)
4774 {
4775 error = TRUE;
4776 (*_bfd_error_handler)
4777 (_("%B: uses different e_flags (0x%lx) fields "
4778 "than previous modules (0x%lx)"),
4779 ibfd, (long) new_flags, (long) old_flags);
4780 }
4781
4782 if (error)
4783 {
4784 bfd_set_error (bfd_error_bad_value);
4785 return FALSE;
4786 }
4787 }
4788
4789 return TRUE;
4790 }
4791
4792 static void
4793 ppc_elf_vle_split16 (bfd *output_bfd, bfd_byte *contents,
4794 bfd_vma offset, bfd_vma relocation,
4795 split16_format_type split16_format)
4796
4797 {
4798 bfd_vma insn, top5, bottom11;
4799
4800 insn = bfd_get_32 (output_bfd, contents + offset);
4801 top5 = relocation >> 11;
4802 top5 = top5 << (split16_format == split16a_type ? 20 : 16);
4803 bottom11 = relocation & 0x7ff;
4804 insn |= top5;
4805 insn |= bottom11;
4806 bfd_put_32 (output_bfd, insn, contents + offset);
4807 }
4808
4809 \f
4810 /* Choose which PLT scheme to use, and set .plt flags appropriately.
4811 Returns -1 on error, 0 for old PLT, 1 for new PLT. */
4812 int
4813 ppc_elf_select_plt_layout (bfd *output_bfd ATTRIBUTE_UNUSED,
4814 struct bfd_link_info *info)
4815 {
4816 struct ppc_elf_link_hash_table *htab;
4817 flagword flags;
4818
4819 htab = ppc_elf_hash_table (info);
4820
4821 if (htab->plt_type == PLT_UNSET)
4822 {
4823 struct elf_link_hash_entry *h;
4824
4825 if (htab->params->plt_style == PLT_OLD)
4826 htab->plt_type = PLT_OLD;
4827 else if (info->shared
4828 && htab->elf.dynamic_sections_created
4829 && (h = elf_link_hash_lookup (&htab->elf, "_mcount",
4830 FALSE, FALSE, TRUE)) != NULL
4831 && (h->type == STT_FUNC
4832 || h->needs_plt)
4833 && h->ref_regular
4834 && !(SYMBOL_CALLS_LOCAL (info, h)
4835 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
4836 && h->root.type == bfd_link_hash_undefweak)))
4837 {
4838 /* Profiling of shared libs (and pies) is not supported with
4839 secure plt, because ppc32 does profiling before a
4840 function prologue and a secure plt pic call stubs needs
4841 r30 to be set up. */
4842 htab->plt_type = PLT_OLD;
4843 }
4844 else
4845 {
4846 bfd *ibfd;
4847 enum ppc_elf_plt_type plt_type = htab->params->plt_style;
4848
4849 /* Look through the reloc flags left by ppc_elf_check_relocs.
4850 Use the old style bss plt if a file makes plt calls
4851 without using the new relocs, and if ld isn't given
4852 --secure-plt and we never see REL16 relocs. */
4853 if (plt_type == PLT_UNSET)
4854 plt_type = PLT_OLD;
4855 for (ibfd = info->input_bfds; ibfd; ibfd = ibfd->link_next)
4856 if (is_ppc_elf (ibfd))
4857 {
4858 if (ppc_elf_tdata (ibfd)->has_rel16)
4859 plt_type = PLT_NEW;
4860 else if (ppc_elf_tdata (ibfd)->makes_plt_call)
4861 {
4862 plt_type = PLT_OLD;
4863 htab->old_bfd = ibfd;
4864 break;
4865 }
4866 }
4867 htab->plt_type = plt_type;
4868 }
4869 }
4870 if (htab->plt_type == PLT_OLD && htab->params->plt_style == PLT_NEW)
4871 {
4872 if (htab->old_bfd != NULL)
4873 info->callbacks->einfo (_("%P: bss-plt forced due to %B\n"),
4874 htab->old_bfd);
4875 else
4876 info->callbacks->einfo (_("%P: bss-plt forced by profiling\n"));
4877 }
4878
4879 BFD_ASSERT (htab->plt_type != PLT_VXWORKS);
4880
4881 if (htab->plt_type == PLT_NEW)
4882 {
4883 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
4884 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4885
4886 /* The new PLT is a loaded section. */
4887 if (htab->plt != NULL
4888 && !bfd_set_section_flags (htab->elf.dynobj, htab->plt, flags))
4889 return -1;
4890
4891 /* The new GOT is not executable. */
4892 if (htab->got != NULL
4893 && !bfd_set_section_flags (htab->elf.dynobj, htab->got, flags))
4894 return -1;
4895 }
4896 else
4897 {
4898 /* Stop an unused .glink section from affecting .text alignment. */
4899 if (htab->glink != NULL
4900 && !bfd_set_section_alignment (htab->elf.dynobj, htab->glink, 0))
4901 return -1;
4902 }
4903 return htab->plt_type == PLT_NEW;
4904 }
4905 \f
4906 /* Return the section that should be marked against GC for a given
4907 relocation. */
4908
4909 static asection *
4910 ppc_elf_gc_mark_hook (asection *sec,
4911 struct bfd_link_info *info,
4912 Elf_Internal_Rela *rel,
4913 struct elf_link_hash_entry *h,
4914 Elf_Internal_Sym *sym)
4915 {
4916 if (h != NULL)
4917 switch (ELF32_R_TYPE (rel->r_info))
4918 {
4919 case R_PPC_GNU_VTINHERIT:
4920 case R_PPC_GNU_VTENTRY:
4921 return NULL;
4922 }
4923
4924 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
4925 }
4926
4927 /* Update the got, plt and dynamic reloc reference counts for the
4928 section being removed. */
4929
4930 static bfd_boolean
4931 ppc_elf_gc_sweep_hook (bfd *abfd,
4932 struct bfd_link_info *info,
4933 asection *sec,
4934 const Elf_Internal_Rela *relocs)
4935 {
4936 struct ppc_elf_link_hash_table *htab;
4937 Elf_Internal_Shdr *symtab_hdr;
4938 struct elf_link_hash_entry **sym_hashes;
4939 bfd_signed_vma *local_got_refcounts;
4940 const Elf_Internal_Rela *rel, *relend;
4941 asection *got2;
4942
4943 if (info->relocatable)
4944 return TRUE;
4945
4946 if ((sec->flags & SEC_ALLOC) == 0)
4947 return TRUE;
4948
4949 elf_section_data (sec)->local_dynrel = NULL;
4950
4951 htab = ppc_elf_hash_table (info);
4952 symtab_hdr = &elf_symtab_hdr (abfd);
4953 sym_hashes = elf_sym_hashes (abfd);
4954 local_got_refcounts = elf_local_got_refcounts (abfd);
4955 got2 = bfd_get_section_by_name (abfd, ".got2");
4956
4957 relend = relocs + sec->reloc_count;
4958 for (rel = relocs; rel < relend; rel++)
4959 {
4960 unsigned long r_symndx;
4961 enum elf_ppc_reloc_type r_type;
4962 struct elf_link_hash_entry *h = NULL;
4963
4964 r_symndx = ELF32_R_SYM (rel->r_info);
4965 if (r_symndx >= symtab_hdr->sh_info)
4966 {
4967 struct elf_dyn_relocs **pp, *p;
4968 struct ppc_elf_link_hash_entry *eh;
4969
4970 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4971 while (h->root.type == bfd_link_hash_indirect
4972 || h->root.type == bfd_link_hash_warning)
4973 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4974 eh = (struct ppc_elf_link_hash_entry *) h;
4975
4976 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
4977 if (p->sec == sec)
4978 {
4979 /* Everything must go for SEC. */
4980 *pp = p->next;
4981 break;
4982 }
4983 }
4984
4985 r_type = ELF32_R_TYPE (rel->r_info);
4986 if (!htab->is_vxworks
4987 && h == NULL
4988 && local_got_refcounts != NULL
4989 && (!info->shared
4990 || is_branch_reloc (r_type)))
4991 {
4992 struct plt_entry **local_plt = (struct plt_entry **)
4993 (local_got_refcounts + symtab_hdr->sh_info);
4994 char *local_got_tls_masks = (char *)
4995 (local_plt + symtab_hdr->sh_info);
4996 if ((local_got_tls_masks[r_symndx] & PLT_IFUNC) != 0)
4997 {
4998 struct plt_entry **ifunc = local_plt + r_symndx;
4999 bfd_vma addend = 0;
5000 struct plt_entry *ent;
5001
5002 if (r_type == R_PPC_PLTREL24 && info->shared)
5003 addend = rel->r_addend;
5004 ent = find_plt_ent (ifunc, got2, addend);
5005 if (ent->plt.refcount > 0)
5006 ent->plt.refcount -= 1;
5007 continue;
5008 }
5009 }
5010
5011 switch (r_type)
5012 {
5013 case R_PPC_GOT_TLSLD16:
5014 case R_PPC_GOT_TLSLD16_LO:
5015 case R_PPC_GOT_TLSLD16_HI:
5016 case R_PPC_GOT_TLSLD16_HA:
5017 case R_PPC_GOT_TLSGD16:
5018 case R_PPC_GOT_TLSGD16_LO:
5019 case R_PPC_GOT_TLSGD16_HI:
5020 case R_PPC_GOT_TLSGD16_HA:
5021 case R_PPC_GOT_TPREL16:
5022 case R_PPC_GOT_TPREL16_LO:
5023 case R_PPC_GOT_TPREL16_HI:
5024 case R_PPC_GOT_TPREL16_HA:
5025 case R_PPC_GOT_DTPREL16:
5026 case R_PPC_GOT_DTPREL16_LO:
5027 case R_PPC_GOT_DTPREL16_HI:
5028 case R_PPC_GOT_DTPREL16_HA:
5029 case R_PPC_GOT16:
5030 case R_PPC_GOT16_LO:
5031 case R_PPC_GOT16_HI:
5032 case R_PPC_GOT16_HA:
5033 if (h != NULL)
5034 {
5035 if (h->got.refcount > 0)
5036 h->got.refcount--;
5037 if (!info->shared)
5038 {
5039 struct plt_entry *ent;
5040
5041 ent = find_plt_ent (&h->plt.plist, NULL, 0);
5042 if (ent != NULL && ent->plt.refcount > 0)
5043 ent->plt.refcount -= 1;
5044 }
5045 }
5046 else if (local_got_refcounts != NULL)
5047 {
5048 if (local_got_refcounts[r_symndx] > 0)
5049 local_got_refcounts[r_symndx]--;
5050 }
5051 break;
5052
5053 case R_PPC_REL24:
5054 case R_PPC_REL14:
5055 case R_PPC_REL14_BRTAKEN:
5056 case R_PPC_REL14_BRNTAKEN:
5057 case R_PPC_REL32:
5058 if (h == NULL || h == htab->elf.hgot)
5059 break;
5060 /* Fall thru */
5061
5062 case R_PPC_ADDR32:
5063 case R_PPC_ADDR24:
5064 case R_PPC_ADDR16:
5065 case R_PPC_ADDR16_LO:
5066 case R_PPC_ADDR16_HI:
5067 case R_PPC_ADDR16_HA:
5068 case R_PPC_ADDR14:
5069 case R_PPC_ADDR14_BRTAKEN:
5070 case R_PPC_ADDR14_BRNTAKEN:
5071 case R_PPC_UADDR32:
5072 case R_PPC_UADDR16:
5073 if (info->shared)
5074 break;
5075
5076 case R_PPC_PLT32:
5077 case R_PPC_PLTREL24:
5078 case R_PPC_PLTREL32:
5079 case R_PPC_PLT16_LO:
5080 case R_PPC_PLT16_HI:
5081 case R_PPC_PLT16_HA:
5082 if (h != NULL)
5083 {
5084 bfd_vma addend = 0;
5085 struct plt_entry *ent;
5086
5087 if (r_type == R_PPC_PLTREL24 && info->shared)
5088 addend = rel->r_addend;
5089 ent = find_plt_ent (&h->plt.plist, got2, addend);
5090 if (ent != NULL && ent->plt.refcount > 0)
5091 ent->plt.refcount -= 1;
5092 }
5093 break;
5094
5095 default:
5096 break;
5097 }
5098 }
5099 return TRUE;
5100 }
5101 \f
5102 /* Set plt output section type, htab->tls_get_addr, and call the
5103 generic ELF tls_setup function. */
5104
5105 asection *
5106 ppc_elf_tls_setup (bfd *obfd, struct bfd_link_info *info)
5107 {
5108 struct ppc_elf_link_hash_table *htab;
5109
5110 htab = ppc_elf_hash_table (info);
5111 htab->tls_get_addr = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
5112 FALSE, FALSE, TRUE);
5113 if (!htab->params->no_tls_get_addr_opt)
5114 {
5115 struct elf_link_hash_entry *opt, *tga;
5116 opt = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_opt",
5117 FALSE, FALSE, TRUE);
5118 if (opt != NULL
5119 && (opt->root.type == bfd_link_hash_defined
5120 || opt->root.type == bfd_link_hash_defweak))
5121 {
5122 /* If glibc supports an optimized __tls_get_addr call stub,
5123 signalled by the presence of __tls_get_addr_opt, and we'll
5124 be calling __tls_get_addr via a plt call stub, then
5125 make __tls_get_addr point to __tls_get_addr_opt. */
5126 tga = htab->tls_get_addr;
5127 if (htab->elf.dynamic_sections_created
5128 && tga != NULL
5129 && (tga->type == STT_FUNC
5130 || tga->needs_plt)
5131 && !(SYMBOL_CALLS_LOCAL (info, tga)
5132 || (ELF_ST_VISIBILITY (tga->other) != STV_DEFAULT
5133 && tga->root.type == bfd_link_hash_undefweak)))
5134 {
5135 struct plt_entry *ent;
5136 for (ent = tga->plt.plist; ent != NULL; ent = ent->next)
5137 if (ent->plt.refcount > 0)
5138 break;
5139 if (ent != NULL)
5140 {
5141 tga->root.type = bfd_link_hash_indirect;
5142 tga->root.u.i.link = &opt->root;
5143 ppc_elf_copy_indirect_symbol (info, opt, tga);
5144 if (opt->dynindx != -1)
5145 {
5146 /* Use __tls_get_addr_opt in dynamic relocations. */
5147 opt->dynindx = -1;
5148 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
5149 opt->dynstr_index);
5150 if (!bfd_elf_link_record_dynamic_symbol (info, opt))
5151 return FALSE;
5152 }
5153 htab->tls_get_addr = opt;
5154 }
5155 }
5156 }
5157 else
5158 htab->params->no_tls_get_addr_opt = TRUE;
5159 }
5160 if (htab->plt_type == PLT_NEW
5161 && htab->plt != NULL
5162 && htab->plt->output_section != NULL)
5163 {
5164 elf_section_type (htab->plt->output_section) = SHT_PROGBITS;
5165 elf_section_flags (htab->plt->output_section) = SHF_ALLOC + SHF_WRITE;
5166 }
5167
5168 return _bfd_elf_tls_setup (obfd, info);
5169 }
5170
5171 /* Return TRUE iff REL is a branch reloc with a global symbol matching
5172 HASH. */
5173
5174 static bfd_boolean
5175 branch_reloc_hash_match (const bfd *ibfd,
5176 const Elf_Internal_Rela *rel,
5177 const struct elf_link_hash_entry *hash)
5178 {
5179 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
5180 enum elf_ppc_reloc_type r_type = ELF32_R_TYPE (rel->r_info);
5181 unsigned int r_symndx = ELF32_R_SYM (rel->r_info);
5182
5183 if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type))
5184 {
5185 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
5186 struct elf_link_hash_entry *h;
5187
5188 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5189 while (h->root.type == bfd_link_hash_indirect
5190 || h->root.type == bfd_link_hash_warning)
5191 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5192 if (h == hash)
5193 return TRUE;
5194 }
5195 return FALSE;
5196 }
5197
5198 /* Run through all the TLS relocs looking for optimization
5199 opportunities. */
5200
5201 bfd_boolean
5202 ppc_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED,
5203 struct bfd_link_info *info)
5204 {
5205 bfd *ibfd;
5206 asection *sec;
5207 struct ppc_elf_link_hash_table *htab;
5208 int pass;
5209
5210 if (info->relocatable || !info->executable)
5211 return TRUE;
5212
5213 htab = ppc_elf_hash_table (info);
5214 if (htab == NULL)
5215 return FALSE;
5216
5217 /* Make two passes through the relocs. First time check that tls
5218 relocs involved in setting up a tls_get_addr call are indeed
5219 followed by such a call. If they are not, don't do any tls
5220 optimization. On the second pass twiddle tls_mask flags to
5221 notify relocate_section that optimization can be done, and
5222 adjust got and plt refcounts. */
5223 for (pass = 0; pass < 2; ++pass)
5224 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
5225 {
5226 Elf_Internal_Sym *locsyms = NULL;
5227 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
5228 asection *got2 = bfd_get_section_by_name (ibfd, ".got2");
5229
5230 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
5231 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
5232 {
5233 Elf_Internal_Rela *relstart, *rel, *relend;
5234 int expecting_tls_get_addr = 0;
5235
5236 /* Read the relocations. */
5237 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
5238 info->keep_memory);
5239 if (relstart == NULL)
5240 return FALSE;
5241
5242 relend = relstart + sec->reloc_count;
5243 for (rel = relstart; rel < relend; rel++)
5244 {
5245 enum elf_ppc_reloc_type r_type;
5246 unsigned long r_symndx;
5247 struct elf_link_hash_entry *h = NULL;
5248 char *tls_mask;
5249 char tls_set, tls_clear;
5250 bfd_boolean is_local;
5251 bfd_signed_vma *got_count;
5252
5253 r_symndx = ELF32_R_SYM (rel->r_info);
5254 if (r_symndx >= symtab_hdr->sh_info)
5255 {
5256 struct elf_link_hash_entry **sym_hashes;
5257
5258 sym_hashes = elf_sym_hashes (ibfd);
5259 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5260 while (h->root.type == bfd_link_hash_indirect
5261 || h->root.type == bfd_link_hash_warning)
5262 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5263 }
5264
5265 is_local = FALSE;
5266 if (h == NULL
5267 || !h->def_dynamic)
5268 is_local = TRUE;
5269
5270 r_type = ELF32_R_TYPE (rel->r_info);
5271 /* If this section has old-style __tls_get_addr calls
5272 without marker relocs, then check that each
5273 __tls_get_addr call reloc is preceded by a reloc
5274 that conceivably belongs to the __tls_get_addr arg
5275 setup insn. If we don't find matching arg setup
5276 relocs, don't do any tls optimization. */
5277 if (pass == 0
5278 && sec->has_tls_get_addr_call
5279 && h != NULL
5280 && h == htab->tls_get_addr
5281 && !expecting_tls_get_addr
5282 && is_branch_reloc (r_type))
5283 {
5284 info->callbacks->minfo ("%H __tls_get_addr lost arg, "
5285 "TLS optimization disabled\n",
5286 ibfd, sec, rel->r_offset);
5287 if (elf_section_data (sec)->relocs != relstart)
5288 free (relstart);
5289 return TRUE;
5290 }
5291
5292 expecting_tls_get_addr = 0;
5293 switch (r_type)
5294 {
5295 case R_PPC_GOT_TLSLD16:
5296 case R_PPC_GOT_TLSLD16_LO:
5297 expecting_tls_get_addr = 1;
5298 /* Fall thru */
5299
5300 case R_PPC_GOT_TLSLD16_HI:
5301 case R_PPC_GOT_TLSLD16_HA:
5302 /* These relocs should never be against a symbol
5303 defined in a shared lib. Leave them alone if
5304 that turns out to be the case. */
5305 if (!is_local)
5306 continue;
5307
5308 /* LD -> LE */
5309 tls_set = 0;
5310 tls_clear = TLS_LD;
5311 break;
5312
5313 case R_PPC_GOT_TLSGD16:
5314 case R_PPC_GOT_TLSGD16_LO:
5315 expecting_tls_get_addr = 1;
5316 /* Fall thru */
5317
5318 case R_PPC_GOT_TLSGD16_HI:
5319 case R_PPC_GOT_TLSGD16_HA:
5320 if (is_local)
5321 /* GD -> LE */
5322 tls_set = 0;
5323 else
5324 /* GD -> IE */
5325 tls_set = TLS_TLS | TLS_TPRELGD;
5326 tls_clear = TLS_GD;
5327 break;
5328
5329 case R_PPC_GOT_TPREL16:
5330 case R_PPC_GOT_TPREL16_LO:
5331 case R_PPC_GOT_TPREL16_HI:
5332 case R_PPC_GOT_TPREL16_HA:
5333 if (is_local)
5334 {
5335 /* IE -> LE */
5336 tls_set = 0;
5337 tls_clear = TLS_TPREL;
5338 break;
5339 }
5340 else
5341 continue;
5342
5343 case R_PPC_TLSGD:
5344 case R_PPC_TLSLD:
5345 expecting_tls_get_addr = 2;
5346 tls_set = 0;
5347 tls_clear = 0;
5348 break;
5349
5350 default:
5351 continue;
5352 }
5353
5354 if (pass == 0)
5355 {
5356 if (!expecting_tls_get_addr
5357 || (expecting_tls_get_addr == 1
5358 && !sec->has_tls_get_addr_call))
5359 continue;
5360
5361 if (rel + 1 < relend
5362 && branch_reloc_hash_match (ibfd, rel + 1,
5363 htab->tls_get_addr))
5364 continue;
5365
5366 /* Uh oh, we didn't find the expected call. We
5367 could just mark this symbol to exclude it
5368 from tls optimization but it's safer to skip
5369 the entire optimization. */
5370 info->callbacks->minfo (_("%H arg lost __tls_get_addr, "
5371 "TLS optimization disabled\n"),
5372 ibfd, sec, rel->r_offset);
5373 if (elf_section_data (sec)->relocs != relstart)
5374 free (relstart);
5375 return TRUE;
5376 }
5377
5378 if (expecting_tls_get_addr)
5379 {
5380 struct plt_entry *ent;
5381 bfd_vma addend = 0;
5382
5383 if (info->shared
5384 && ELF32_R_TYPE (rel[1].r_info) == R_PPC_PLTREL24)
5385 addend = rel[1].r_addend;
5386 ent = find_plt_ent (&htab->tls_get_addr->plt.plist,
5387 got2, addend);
5388 if (ent != NULL && ent->plt.refcount > 0)
5389 ent->plt.refcount -= 1;
5390
5391 if (expecting_tls_get_addr == 2)
5392 continue;
5393 }
5394
5395 if (h != NULL)
5396 {
5397 tls_mask = &ppc_elf_hash_entry (h)->tls_mask;
5398 got_count = &h->got.refcount;
5399 }
5400 else
5401 {
5402 bfd_signed_vma *lgot_refs;
5403 struct plt_entry **local_plt;
5404 char *lgot_masks;
5405
5406 if (locsyms == NULL)
5407 {
5408 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
5409 if (locsyms == NULL)
5410 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
5411 symtab_hdr->sh_info,
5412 0, NULL, NULL, NULL);
5413 if (locsyms == NULL)
5414 {
5415 if (elf_section_data (sec)->relocs != relstart)
5416 free (relstart);
5417 return FALSE;
5418 }
5419 }
5420 lgot_refs = elf_local_got_refcounts (ibfd);
5421 if (lgot_refs == NULL)
5422 abort ();
5423 local_plt = (struct plt_entry **)
5424 (lgot_refs + symtab_hdr->sh_info);
5425 lgot_masks = (char *) (local_plt + symtab_hdr->sh_info);
5426 tls_mask = &lgot_masks[r_symndx];
5427 got_count = &lgot_refs[r_symndx];
5428 }
5429
5430 if (tls_set == 0)
5431 {
5432 /* We managed to get rid of a got entry. */
5433 if (*got_count > 0)
5434 *got_count -= 1;
5435 }
5436
5437 *tls_mask |= tls_set;
5438 *tls_mask &= ~tls_clear;
5439 }
5440
5441 if (elf_section_data (sec)->relocs != relstart)
5442 free (relstart);
5443 }
5444
5445 if (locsyms != NULL
5446 && (symtab_hdr->contents != (unsigned char *) locsyms))
5447 {
5448 if (!info->keep_memory)
5449 free (locsyms);
5450 else
5451 symtab_hdr->contents = (unsigned char *) locsyms;
5452 }
5453 }
5454 return TRUE;
5455 }
5456 \f
5457 /* Return true if we have dynamic relocs that apply to read-only sections. */
5458
5459 static bfd_boolean
5460 readonly_dynrelocs (struct elf_link_hash_entry *h)
5461 {
5462 struct elf_dyn_relocs *p;
5463
5464 for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next)
5465 {
5466 asection *s = p->sec->output_section;
5467
5468 if (s != NULL
5469 && ((s->flags & (SEC_READONLY | SEC_ALLOC))
5470 == (SEC_READONLY | SEC_ALLOC)))
5471 return TRUE;
5472 }
5473 return FALSE;
5474 }
5475
5476 /* Adjust a symbol defined by a dynamic object and referenced by a
5477 regular object. The current definition is in some section of the
5478 dynamic object, but we're not including those sections. We have to
5479 change the definition to something the rest of the link can
5480 understand. */
5481
5482 static bfd_boolean
5483 ppc_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
5484 struct elf_link_hash_entry *h)
5485 {
5486 struct ppc_elf_link_hash_table *htab;
5487 asection *s;
5488
5489 #ifdef DEBUG
5490 fprintf (stderr, "ppc_elf_adjust_dynamic_symbol called for %s\n",
5491 h->root.root.string);
5492 #endif
5493
5494 /* Make sure we know what is going on here. */
5495 htab = ppc_elf_hash_table (info);
5496 BFD_ASSERT (htab->elf.dynobj != NULL
5497 && (h->needs_plt
5498 || h->type == STT_GNU_IFUNC
5499 || h->u.weakdef != NULL
5500 || (h->def_dynamic
5501 && h->ref_regular
5502 && !h->def_regular)));
5503
5504 /* Deal with function syms. */
5505 if (h->type == STT_FUNC
5506 || h->type == STT_GNU_IFUNC
5507 || h->needs_plt)
5508 {
5509 /* Clear procedure linkage table information for any symbol that
5510 won't need a .plt entry. */
5511 struct plt_entry *ent;
5512 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
5513 if (ent->plt.refcount > 0)
5514 break;
5515 if (ent == NULL
5516 || (h->type != STT_GNU_IFUNC
5517 && (SYMBOL_CALLS_LOCAL (info, h)
5518 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
5519 && h->root.type == bfd_link_hash_undefweak))))
5520 {
5521 /* A PLT entry is not required/allowed when:
5522
5523 1. We are not using ld.so; because then the PLT entry
5524 can't be set up, so we can't use one. In this case,
5525 ppc_elf_adjust_dynamic_symbol won't even be called.
5526
5527 2. GC has rendered the entry unused.
5528
5529 3. We know for certain that a call to this symbol
5530 will go to this object, or will remain undefined. */
5531 h->plt.plist = NULL;
5532 h->needs_plt = 0;
5533 }
5534 else
5535 {
5536 /* After adjust_dynamic_symbol, non_got_ref set in the
5537 non-shared case means that we have allocated space in
5538 .dynbss for the symbol and thus dyn_relocs for this
5539 symbol should be discarded.
5540 If we get here we know we are making a PLT entry for this
5541 symbol, and in an executable we'd normally resolve
5542 relocations against this symbol to the PLT entry. Allow
5543 dynamic relocs if the reference is weak, and the dynamic
5544 relocs will not cause text relocation. */
5545 if (!h->ref_regular_nonweak
5546 && h->non_got_ref
5547 && h->type != STT_GNU_IFUNC
5548 && !htab->is_vxworks
5549 && !ppc_elf_hash_entry (h)->has_sda_refs
5550 && !readonly_dynrelocs (h))
5551 h->non_got_ref = 0;
5552 }
5553 return TRUE;
5554 }
5555 else
5556 h->plt.plist = NULL;
5557
5558 /* If this is a weak symbol, and there is a real definition, the
5559 processor independent code will have arranged for us to see the
5560 real definition first, and we can just use the same value. */
5561 if (h->u.weakdef != NULL)
5562 {
5563 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
5564 || h->u.weakdef->root.type == bfd_link_hash_defweak);
5565 h->root.u.def.section = h->u.weakdef->root.u.def.section;
5566 h->root.u.def.value = h->u.weakdef->root.u.def.value;
5567 if (ELIMINATE_COPY_RELOCS)
5568 h->non_got_ref = h->u.weakdef->non_got_ref;
5569 return TRUE;
5570 }
5571
5572 /* This is a reference to a symbol defined by a dynamic object which
5573 is not a function. */
5574
5575 /* If we are creating a shared library, we must presume that the
5576 only references to the symbol are via the global offset table.
5577 For such cases we need not do anything here; the relocations will
5578 be handled correctly by relocate_section. */
5579 if (info->shared)
5580 return TRUE;
5581
5582 /* If there are no references to this symbol that do not use the
5583 GOT, we don't need to generate a copy reloc. */
5584 if (!h->non_got_ref)
5585 return TRUE;
5586
5587 /* If we didn't find any dynamic relocs in read-only sections, then
5588 we'll be keeping the dynamic relocs and avoiding the copy reloc.
5589 We can't do this if there are any small data relocations. This
5590 doesn't work on VxWorks, where we can not have dynamic
5591 relocations (other than copy and jump slot relocations) in an
5592 executable. */
5593 if (ELIMINATE_COPY_RELOCS
5594 && !ppc_elf_hash_entry (h)->has_sda_refs
5595 && !htab->is_vxworks
5596 && !h->def_regular
5597 && !readonly_dynrelocs (h))
5598 {
5599 h->non_got_ref = 0;
5600 return TRUE;
5601 }
5602
5603 /* We must allocate the symbol in our .dynbss section, which will
5604 become part of the .bss section of the executable. There will be
5605 an entry for this symbol in the .dynsym section. The dynamic
5606 object will contain position independent code, so all references
5607 from the dynamic object to this symbol will go through the global
5608 offset table. The dynamic linker will use the .dynsym entry to
5609 determine the address it must put in the global offset table, so
5610 both the dynamic object and the regular object will refer to the
5611 same memory location for the variable.
5612
5613 Of course, if the symbol is referenced using SDAREL relocs, we
5614 must instead allocate it in .sbss. */
5615
5616 if (ppc_elf_hash_entry (h)->has_sda_refs)
5617 s = htab->dynsbss;
5618 else
5619 s = htab->dynbss;
5620 BFD_ASSERT (s != NULL);
5621
5622 /* We must generate a R_PPC_COPY reloc to tell the dynamic linker to
5623 copy the initial value out of the dynamic object and into the
5624 runtime process image. We need to remember the offset into the
5625 .rela.bss section we are going to use. */
5626 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
5627 {
5628 asection *srel;
5629
5630 if (ppc_elf_hash_entry (h)->has_sda_refs)
5631 srel = htab->relsbss;
5632 else
5633 srel = htab->relbss;
5634 BFD_ASSERT (srel != NULL);
5635 srel->size += sizeof (Elf32_External_Rela);
5636 h->needs_copy = 1;
5637 }
5638
5639 return _bfd_elf_adjust_dynamic_copy (h, s);
5640 }
5641 \f
5642 /* Generate a symbol to mark plt call stubs. For non-PIC code the sym is
5643 xxxxxxxx.plt_call32.<callee> where xxxxxxxx is a hex number, usually 0,
5644 specifying the addend on the plt relocation. For -fpic code, the sym
5645 is xxxxxxxx.plt_pic32.<callee>, and for -fPIC
5646 xxxxxxxx.got2.plt_pic32.<callee>. */
5647
5648 static bfd_boolean
5649 add_stub_sym (struct plt_entry *ent,
5650 struct elf_link_hash_entry *h,
5651 struct bfd_link_info *info)
5652 {
5653 struct elf_link_hash_entry *sh;
5654 size_t len1, len2, len3;
5655 char *name;
5656 const char *stub;
5657 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
5658
5659 if (info->shared)
5660 stub = ".plt_pic32.";
5661 else
5662 stub = ".plt_call32.";
5663
5664 len1 = strlen (h->root.root.string);
5665 len2 = strlen (stub);
5666 len3 = 0;
5667 if (ent->sec)
5668 len3 = strlen (ent->sec->name);
5669 name = bfd_malloc (len1 + len2 + len3 + 9);
5670 if (name == NULL)
5671 return FALSE;
5672 sprintf (name, "%08x", (unsigned) ent->addend & 0xffffffff);
5673 if (ent->sec)
5674 memcpy (name + 8, ent->sec->name, len3);
5675 memcpy (name + 8 + len3, stub, len2);
5676 memcpy (name + 8 + len3 + len2, h->root.root.string, len1 + 1);
5677 sh = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
5678 if (sh == NULL)
5679 return FALSE;
5680 if (sh->root.type == bfd_link_hash_new)
5681 {
5682 sh->root.type = bfd_link_hash_defined;
5683 sh->root.u.def.section = htab->glink;
5684 sh->root.u.def.value = ent->glink_offset;
5685 sh->ref_regular = 1;
5686 sh->def_regular = 1;
5687 sh->ref_regular_nonweak = 1;
5688 sh->forced_local = 1;
5689 sh->non_elf = 0;
5690 }
5691 return TRUE;
5692 }
5693
5694 /* Allocate NEED contiguous space in .got, and return the offset.
5695 Handles allocation of the got header when crossing 32k. */
5696
5697 static bfd_vma
5698 allocate_got (struct ppc_elf_link_hash_table *htab, unsigned int need)
5699 {
5700 bfd_vma where;
5701 unsigned int max_before_header;
5702
5703 if (htab->plt_type == PLT_VXWORKS)
5704 {
5705 where = htab->got->size;
5706 htab->got->size += need;
5707 }
5708 else
5709 {
5710 max_before_header = htab->plt_type == PLT_NEW ? 32768 : 32764;
5711 if (need <= htab->got_gap)
5712 {
5713 where = max_before_header - htab->got_gap;
5714 htab->got_gap -= need;
5715 }
5716 else
5717 {
5718 if (htab->got->size + need > max_before_header
5719 && htab->got->size <= max_before_header)
5720 {
5721 htab->got_gap = max_before_header - htab->got->size;
5722 htab->got->size = max_before_header + htab->got_header_size;
5723 }
5724 where = htab->got->size;
5725 htab->got->size += need;
5726 }
5727 }
5728 return where;
5729 }
5730
5731 /* Allocate space in associated reloc sections for dynamic relocs. */
5732
5733 static bfd_boolean
5734 allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
5735 {
5736 struct bfd_link_info *info = inf;
5737 struct ppc_elf_link_hash_entry *eh;
5738 struct ppc_elf_link_hash_table *htab;
5739 struct elf_dyn_relocs *p;
5740
5741 if (h->root.type == bfd_link_hash_indirect)
5742 return TRUE;
5743
5744 htab = ppc_elf_hash_table (info);
5745 if (htab->elf.dynamic_sections_created
5746 || h->type == STT_GNU_IFUNC)
5747 {
5748 struct plt_entry *ent;
5749 bfd_boolean doneone = FALSE;
5750 bfd_vma plt_offset = 0, glink_offset = 0;
5751 bfd_boolean dyn;
5752
5753 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
5754 if (ent->plt.refcount > 0)
5755 {
5756 /* Make sure this symbol is output as a dynamic symbol. */
5757 if (h->dynindx == -1
5758 && !h->forced_local
5759 && !h->def_regular
5760 && htab->elf.dynamic_sections_created)
5761 {
5762 if (! bfd_elf_link_record_dynamic_symbol (info, h))
5763 return FALSE;
5764 }
5765
5766 dyn = htab->elf.dynamic_sections_created;
5767 if (info->shared
5768 || h->type == STT_GNU_IFUNC
5769 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))
5770 {
5771 asection *s = htab->plt;
5772 if (!dyn || h->dynindx == -1)
5773 s = htab->iplt;
5774
5775 if (htab->plt_type == PLT_NEW || !dyn || h->dynindx == -1)
5776 {
5777 if (!doneone)
5778 {
5779 plt_offset = s->size;
5780 s->size += 4;
5781 }
5782 ent->plt.offset = plt_offset;
5783
5784 s = htab->glink;
5785 if (!doneone || info->shared)
5786 {
5787 glink_offset = s->size;
5788 s->size += GLINK_ENTRY_SIZE;
5789 if (h == htab->tls_get_addr
5790 && !htab->params->no_tls_get_addr_opt)
5791 s->size += TLS_GET_ADDR_GLINK_SIZE - GLINK_ENTRY_SIZE;
5792 }
5793 if (!doneone
5794 && !info->shared
5795 && h->def_dynamic
5796 && !h->def_regular)
5797 {
5798 h->root.u.def.section = s;
5799 h->root.u.def.value = glink_offset;
5800 }
5801 ent->glink_offset = glink_offset;
5802
5803 if (htab->params->emit_stub_syms
5804 && !add_stub_sym (ent, h, info))
5805 return FALSE;
5806 }
5807 else
5808 {
5809 if (!doneone)
5810 {
5811 /* If this is the first .plt entry, make room
5812 for the special first entry. */
5813 if (s->size == 0)
5814 s->size += htab->plt_initial_entry_size;
5815
5816 /* The PowerPC PLT is actually composed of two
5817 parts, the first part is 2 words (for a load
5818 and a jump), and then there is a remaining
5819 word available at the end. */
5820 plt_offset = (htab->plt_initial_entry_size
5821 + (htab->plt_slot_size
5822 * ((s->size
5823 - htab->plt_initial_entry_size)
5824 / htab->plt_entry_size)));
5825
5826 /* If this symbol is not defined in a regular
5827 file, and we are not generating a shared
5828 library, then set the symbol to this location
5829 in the .plt. This is to avoid text
5830 relocations, and is required to make
5831 function pointers compare as equal between
5832 the normal executable and the shared library. */
5833 if (! info->shared
5834 && h->def_dynamic
5835 && !h->def_regular)
5836 {
5837 h->root.u.def.section = s;
5838 h->root.u.def.value = plt_offset;
5839 }
5840
5841 /* Make room for this entry. */
5842 s->size += htab->plt_entry_size;
5843 /* After the 8192nd entry, room for two entries
5844 is allocated. */
5845 if (htab->plt_type == PLT_OLD
5846 && (s->size - htab->plt_initial_entry_size)
5847 / htab->plt_entry_size
5848 > PLT_NUM_SINGLE_ENTRIES)
5849 s->size += htab->plt_entry_size;
5850 }
5851 ent->plt.offset = plt_offset;
5852 }
5853
5854 /* We also need to make an entry in the .rela.plt section. */
5855 if (!doneone)
5856 {
5857 if (!htab->elf.dynamic_sections_created
5858 || h->dynindx == -1)
5859 htab->reliplt->size += sizeof (Elf32_External_Rela);
5860 else
5861 {
5862 htab->relplt->size += sizeof (Elf32_External_Rela);
5863
5864 if (htab->plt_type == PLT_VXWORKS)
5865 {
5866 /* Allocate space for the unloaded relocations. */
5867 if (!info->shared
5868 && htab->elf.dynamic_sections_created)
5869 {
5870 if (ent->plt.offset
5871 == (bfd_vma) htab->plt_initial_entry_size)
5872 {
5873 htab->srelplt2->size
5874 += (sizeof (Elf32_External_Rela)
5875 * VXWORKS_PLTRESOLVE_RELOCS);
5876 }
5877
5878 htab->srelplt2->size
5879 += (sizeof (Elf32_External_Rela)
5880 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS);
5881 }
5882
5883 /* Every PLT entry has an associated GOT entry in
5884 .got.plt. */
5885 htab->sgotplt->size += 4;
5886 }
5887 }
5888 doneone = TRUE;
5889 }
5890 }
5891 else
5892 ent->plt.offset = (bfd_vma) -1;
5893 }
5894 else
5895 ent->plt.offset = (bfd_vma) -1;
5896
5897 if (!doneone)
5898 {
5899 h->plt.plist = NULL;
5900 h->needs_plt = 0;
5901 }
5902 }
5903 else
5904 {
5905 h->plt.plist = NULL;
5906 h->needs_plt = 0;
5907 }
5908
5909 eh = (struct ppc_elf_link_hash_entry *) h;
5910 if (eh->elf.got.refcount > 0)
5911 {
5912 bfd_boolean dyn;
5913 unsigned int need;
5914
5915 /* Make sure this symbol is output as a dynamic symbol. */
5916 if (eh->elf.dynindx == -1
5917 && !eh->elf.forced_local
5918 && eh->elf.type != STT_GNU_IFUNC
5919 && htab->elf.dynamic_sections_created)
5920 {
5921 if (!bfd_elf_link_record_dynamic_symbol (info, &eh->elf))
5922 return FALSE;
5923 }
5924
5925 need = 0;
5926 if ((eh->tls_mask & TLS_TLS) != 0)
5927 {
5928 if ((eh->tls_mask & TLS_LD) != 0)
5929 {
5930 if (!eh->elf.def_dynamic)
5931 /* We'll just use htab->tlsld_got.offset. This should
5932 always be the case. It's a little odd if we have
5933 a local dynamic reloc against a non-local symbol. */
5934 htab->tlsld_got.refcount += 1;
5935 else
5936 need += 8;
5937 }
5938 if ((eh->tls_mask & TLS_GD) != 0)
5939 need += 8;
5940 if ((eh->tls_mask & (TLS_TPREL | TLS_TPRELGD)) != 0)
5941 need += 4;
5942 if ((eh->tls_mask & TLS_DTPREL) != 0)
5943 need += 4;
5944 }
5945 else
5946 need += 4;
5947 if (need == 0)
5948 eh->elf.got.offset = (bfd_vma) -1;
5949 else
5950 {
5951 eh->elf.got.offset = allocate_got (htab, need);
5952 dyn = htab->elf.dynamic_sections_created;
5953 if ((info->shared
5954 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, &eh->elf))
5955 && (ELF_ST_VISIBILITY (eh->elf.other) == STV_DEFAULT
5956 || eh->elf.root.type != bfd_link_hash_undefweak))
5957 {
5958 asection *rsec = htab->relgot;
5959
5960 if (eh->elf.type == STT_GNU_IFUNC)
5961 rsec = htab->reliplt;
5962 /* All the entries we allocated need relocs.
5963 Except LD only needs one. */
5964 if ((eh->tls_mask & TLS_LD) != 0
5965 && eh->elf.def_dynamic)
5966 need -= 4;
5967 rsec->size += need * (sizeof (Elf32_External_Rela) / 4);
5968 }
5969 }
5970 }
5971 else
5972 eh->elf.got.offset = (bfd_vma) -1;
5973
5974 if (eh->dyn_relocs == NULL
5975 || !htab->elf.dynamic_sections_created)
5976 return TRUE;
5977
5978 /* In the shared -Bsymbolic case, discard space allocated for
5979 dynamic pc-relative relocs against symbols which turn out to be
5980 defined in regular objects. For the normal shared case, discard
5981 space for relocs that have become local due to symbol visibility
5982 changes. */
5983
5984 if (info->shared)
5985 {
5986 /* Relocs that use pc_count are those that appear on a call insn,
5987 or certain REL relocs (see must_be_dyn_reloc) that can be
5988 generated via assembly. We want calls to protected symbols to
5989 resolve directly to the function rather than going via the plt.
5990 If people want function pointer comparisons to work as expected
5991 then they should avoid writing weird assembly. */
5992 if (SYMBOL_CALLS_LOCAL (info, h))
5993 {
5994 struct elf_dyn_relocs **pp;
5995
5996 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
5997 {
5998 p->count -= p->pc_count;
5999 p->pc_count = 0;
6000 if (p->count == 0)
6001 *pp = p->next;
6002 else
6003 pp = &p->next;
6004 }
6005 }
6006
6007 if (htab->is_vxworks)
6008 {
6009 struct elf_dyn_relocs **pp;
6010
6011 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
6012 {
6013 if (strcmp (p->sec->output_section->name, ".tls_vars") == 0)
6014 *pp = p->next;
6015 else
6016 pp = &p->next;
6017 }
6018 }
6019
6020 /* Discard relocs on undefined symbols that must be local. */
6021 if (eh->dyn_relocs != NULL
6022 && h->root.type == bfd_link_hash_undefined
6023 && (ELF_ST_VISIBILITY (h->other) == STV_HIDDEN
6024 || ELF_ST_VISIBILITY (h->other) == STV_INTERNAL))
6025 eh->dyn_relocs = NULL;
6026
6027 /* Also discard relocs on undefined weak syms with non-default
6028 visibility. */
6029 if (eh->dyn_relocs != NULL
6030 && h->root.type == bfd_link_hash_undefweak)
6031 {
6032 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
6033 eh->dyn_relocs = NULL;
6034
6035 /* Make sure undefined weak symbols are output as a dynamic
6036 symbol in PIEs. */
6037 else if (h->dynindx == -1
6038 && !h->forced_local
6039 && !h->def_regular)
6040 {
6041 if (! bfd_elf_link_record_dynamic_symbol (info, h))
6042 return FALSE;
6043 }
6044 }
6045 }
6046 else if (ELIMINATE_COPY_RELOCS)
6047 {
6048 /* For the non-shared case, discard space for relocs against
6049 symbols which turn out to need copy relocs or are not
6050 dynamic. */
6051
6052 if (!h->non_got_ref
6053 && !h->def_regular)
6054 {
6055 /* Make sure this symbol is output as a dynamic symbol.
6056 Undefined weak syms won't yet be marked as dynamic. */
6057 if (h->dynindx == -1
6058 && !h->forced_local)
6059 {
6060 if (! bfd_elf_link_record_dynamic_symbol (info, h))
6061 return FALSE;
6062 }
6063
6064 /* If that succeeded, we know we'll be keeping all the
6065 relocs. */
6066 if (h->dynindx != -1)
6067 goto keep;
6068 }
6069
6070 eh->dyn_relocs = NULL;
6071
6072 keep: ;
6073 }
6074
6075 /* Finally, allocate space. */
6076 for (p = eh->dyn_relocs; p != NULL; p = p->next)
6077 {
6078 asection *sreloc = elf_section_data (p->sec)->sreloc;
6079 if (eh->elf.type == STT_GNU_IFUNC)
6080 sreloc = htab->reliplt;
6081 sreloc->size += p->count * sizeof (Elf32_External_Rela);
6082 }
6083
6084 return TRUE;
6085 }
6086
6087 /* Set DF_TEXTREL if we find any dynamic relocs that apply to
6088 read-only sections. */
6089
6090 static bfd_boolean
6091 maybe_set_textrel (struct elf_link_hash_entry *h, void *info)
6092 {
6093 if (h->root.type == bfd_link_hash_indirect)
6094 return TRUE;
6095
6096 if (readonly_dynrelocs (h))
6097 {
6098 ((struct bfd_link_info *) info)->flags |= DF_TEXTREL;
6099
6100 /* Not an error, just cut short the traversal. */
6101 return FALSE;
6102 }
6103 return TRUE;
6104 }
6105
6106 static const unsigned char glink_eh_frame_cie[] =
6107 {
6108 0, 0, 0, 16, /* length. */
6109 0, 0, 0, 0, /* id. */
6110 1, /* CIE version. */
6111 'z', 'R', 0, /* Augmentation string. */
6112 4, /* Code alignment. */
6113 0x7c, /* Data alignment. */
6114 65, /* RA reg. */
6115 1, /* Augmentation size. */
6116 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding. */
6117 DW_CFA_def_cfa, 1, 0 /* def_cfa: r1 offset 0. */
6118 };
6119
6120 /* Set the sizes of the dynamic sections. */
6121
6122 static bfd_boolean
6123 ppc_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
6124 struct bfd_link_info *info)
6125 {
6126 struct ppc_elf_link_hash_table *htab;
6127 asection *s;
6128 bfd_boolean relocs;
6129 bfd *ibfd;
6130
6131 #ifdef DEBUG
6132 fprintf (stderr, "ppc_elf_size_dynamic_sections called\n");
6133 #endif
6134
6135 htab = ppc_elf_hash_table (info);
6136 BFD_ASSERT (htab->elf.dynobj != NULL);
6137
6138 if (elf_hash_table (info)->dynamic_sections_created)
6139 {
6140 /* Set the contents of the .interp section to the interpreter. */
6141 if (info->executable)
6142 {
6143 s = bfd_get_linker_section (htab->elf.dynobj, ".interp");
6144 BFD_ASSERT (s != NULL);
6145 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
6146 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
6147 }
6148 }
6149
6150 if (htab->plt_type == PLT_OLD)
6151 htab->got_header_size = 16;
6152 else if (htab->plt_type == PLT_NEW)
6153 htab->got_header_size = 12;
6154
6155 /* Set up .got offsets for local syms, and space for local dynamic
6156 relocs. */
6157 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
6158 {
6159 bfd_signed_vma *local_got;
6160 bfd_signed_vma *end_local_got;
6161 struct plt_entry **local_plt;
6162 struct plt_entry **end_local_plt;
6163 char *lgot_masks;
6164 bfd_size_type locsymcount;
6165 Elf_Internal_Shdr *symtab_hdr;
6166
6167 if (!is_ppc_elf (ibfd))
6168 continue;
6169
6170 for (s = ibfd->sections; s != NULL; s = s->next)
6171 {
6172 struct ppc_dyn_relocs *p;
6173
6174 for (p = ((struct ppc_dyn_relocs *)
6175 elf_section_data (s)->local_dynrel);
6176 p != NULL;
6177 p = p->next)
6178 {
6179 if (!bfd_is_abs_section (p->sec)
6180 && bfd_is_abs_section (p->sec->output_section))
6181 {
6182 /* Input section has been discarded, either because
6183 it is a copy of a linkonce section or due to
6184 linker script /DISCARD/, so we'll be discarding
6185 the relocs too. */
6186 }
6187 else if (htab->is_vxworks
6188 && strcmp (p->sec->output_section->name,
6189 ".tls_vars") == 0)
6190 {
6191 /* Relocations in vxworks .tls_vars sections are
6192 handled specially by the loader. */
6193 }
6194 else if (p->count != 0)
6195 {
6196 asection *sreloc = elf_section_data (p->sec)->sreloc;
6197 if (p->ifunc)
6198 sreloc = htab->reliplt;
6199 sreloc->size += p->count * sizeof (Elf32_External_Rela);
6200 if ((p->sec->output_section->flags
6201 & (SEC_READONLY | SEC_ALLOC))
6202 == (SEC_READONLY | SEC_ALLOC))
6203 info->flags |= DF_TEXTREL;
6204 }
6205 }
6206 }
6207
6208 local_got = elf_local_got_refcounts (ibfd);
6209 if (!local_got)
6210 continue;
6211
6212 symtab_hdr = &elf_symtab_hdr (ibfd);
6213 locsymcount = symtab_hdr->sh_info;
6214 end_local_got = local_got + locsymcount;
6215 local_plt = (struct plt_entry **) end_local_got;
6216 end_local_plt = local_plt + locsymcount;
6217 lgot_masks = (char *) end_local_plt;
6218
6219 for (; local_got < end_local_got; ++local_got, ++lgot_masks)
6220 if (*local_got > 0)
6221 {
6222 unsigned int need = 0;
6223 if ((*lgot_masks & TLS_TLS) != 0)
6224 {
6225 if ((*lgot_masks & TLS_GD) != 0)
6226 need += 8;
6227 if ((*lgot_masks & TLS_LD) != 0)
6228 htab->tlsld_got.refcount += 1;
6229 if ((*lgot_masks & (TLS_TPREL | TLS_TPRELGD)) != 0)
6230 need += 4;
6231 if ((*lgot_masks & TLS_DTPREL) != 0)
6232 need += 4;
6233 }
6234 else
6235 need += 4;
6236 if (need == 0)
6237 *local_got = (bfd_vma) -1;
6238 else
6239 {
6240 *local_got = allocate_got (htab, need);
6241 if (info->shared)
6242 {
6243 asection *srel = htab->relgot;
6244 if ((*lgot_masks & PLT_IFUNC) != 0)
6245 srel = htab->reliplt;
6246 srel->size += need * (sizeof (Elf32_External_Rela) / 4);
6247 }
6248 }
6249 }
6250 else
6251 *local_got = (bfd_vma) -1;
6252
6253 if (htab->is_vxworks)
6254 continue;
6255
6256 /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */
6257 for (; local_plt < end_local_plt; ++local_plt)
6258 {
6259 struct plt_entry *ent;
6260 bfd_boolean doneone = FALSE;
6261 bfd_vma plt_offset = 0, glink_offset = 0;
6262
6263 for (ent = *local_plt; ent != NULL; ent = ent->next)
6264 if (ent->plt.refcount > 0)
6265 {
6266 s = htab->iplt;
6267
6268 if (!doneone)
6269 {
6270 plt_offset = s->size;
6271 s->size += 4;
6272 }
6273 ent->plt.offset = plt_offset;
6274
6275 s = htab->glink;
6276 if (!doneone || info->shared)
6277 {
6278 glink_offset = s->size;
6279 s->size += GLINK_ENTRY_SIZE;
6280 }
6281 ent->glink_offset = glink_offset;
6282
6283 if (!doneone)
6284 {
6285 htab->reliplt->size += sizeof (Elf32_External_Rela);
6286 doneone = TRUE;
6287 }
6288 }
6289 else
6290 ent->plt.offset = (bfd_vma) -1;
6291 }
6292 }
6293
6294 /* Allocate space for global sym dynamic relocs. */
6295 elf_link_hash_traverse (elf_hash_table (info), allocate_dynrelocs, info);
6296
6297 if (htab->tlsld_got.refcount > 0)
6298 {
6299 htab->tlsld_got.offset = allocate_got (htab, 8);
6300 if (info->shared)
6301 htab->relgot->size += sizeof (Elf32_External_Rela);
6302 }
6303 else
6304 htab->tlsld_got.offset = (bfd_vma) -1;
6305
6306 if (htab->got != NULL && htab->plt_type != PLT_VXWORKS)
6307 {
6308 unsigned int g_o_t = 32768;
6309
6310 /* If we haven't allocated the header, do so now. When we get here,
6311 for old plt/got the got size will be 0 to 32764 (not allocated),
6312 or 32780 to 65536 (header allocated). For new plt/got, the
6313 corresponding ranges are 0 to 32768 and 32780 to 65536. */
6314 if (htab->got->size <= 32768)
6315 {
6316 g_o_t = htab->got->size;
6317 if (htab->plt_type == PLT_OLD)
6318 g_o_t += 4;
6319 htab->got->size += htab->got_header_size;
6320 }
6321
6322 htab->elf.hgot->root.u.def.value = g_o_t;
6323 }
6324 if (info->shared)
6325 {
6326 struct elf_link_hash_entry *sda = htab->sdata[0].sym;
6327 if (sda != NULL
6328 && !(sda->root.type == bfd_link_hash_defined
6329 || sda->root.type == bfd_link_hash_defweak))
6330 {
6331 sda->root.type = bfd_link_hash_defined;
6332 sda->root.u.def.section = htab->elf.hgot->root.u.def.section;
6333 sda->root.u.def.value = htab->elf.hgot->root.u.def.value;
6334 }
6335 }
6336
6337 if (htab->glink != NULL
6338 && htab->glink->size != 0
6339 && htab->elf.dynamic_sections_created)
6340 {
6341 htab->glink_pltresolve = htab->glink->size;
6342 /* Space for the branch table. */
6343 htab->glink->size += htab->glink->size / (GLINK_ENTRY_SIZE / 4) - 4;
6344 /* Pad out to align the start of PLTresolve. */
6345 htab->glink->size += -htab->glink->size & (htab->params->ppc476_workaround
6346 ? 63 : 15);
6347 htab->glink->size += GLINK_PLTRESOLVE;
6348
6349 if (htab->params->emit_stub_syms)
6350 {
6351 struct elf_link_hash_entry *sh;
6352 sh = elf_link_hash_lookup (&htab->elf, "__glink",
6353 TRUE, FALSE, FALSE);
6354 if (sh == NULL)
6355 return FALSE;
6356 if (sh->root.type == bfd_link_hash_new)
6357 {
6358 sh->root.type = bfd_link_hash_defined;
6359 sh->root.u.def.section = htab->glink;
6360 sh->root.u.def.value = htab->glink_pltresolve;
6361 sh->ref_regular = 1;
6362 sh->def_regular = 1;
6363 sh->ref_regular_nonweak = 1;
6364 sh->forced_local = 1;
6365 sh->non_elf = 0;
6366 }
6367 sh = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve",
6368 TRUE, FALSE, FALSE);
6369 if (sh == NULL)
6370 return FALSE;
6371 if (sh->root.type == bfd_link_hash_new)
6372 {
6373 sh->root.type = bfd_link_hash_defined;
6374 sh->root.u.def.section = htab->glink;
6375 sh->root.u.def.value = htab->glink->size - GLINK_PLTRESOLVE;
6376 sh->ref_regular = 1;
6377 sh->def_regular = 1;
6378 sh->ref_regular_nonweak = 1;
6379 sh->forced_local = 1;
6380 sh->non_elf = 0;
6381 }
6382 }
6383 }
6384
6385 if (htab->glink != NULL
6386 && htab->glink->size != 0
6387 && htab->glink_eh_frame != NULL
6388 && !bfd_is_abs_section (htab->glink_eh_frame->output_section)
6389 && _bfd_elf_eh_frame_present (info))
6390 {
6391 s = htab->glink_eh_frame;
6392 s->size = sizeof (glink_eh_frame_cie) + 20;
6393 if (info->shared)
6394 {
6395 s->size += 4;
6396 if (htab->glink->size - GLINK_PLTRESOLVE + 8 >= 256)
6397 s->size += 4;
6398 }
6399 }
6400
6401 /* We've now determined the sizes of the various dynamic sections.
6402 Allocate memory for them. */
6403 relocs = FALSE;
6404 for (s = htab->elf.dynobj->sections; s != NULL; s = s->next)
6405 {
6406 bfd_boolean strip_section = TRUE;
6407
6408 if ((s->flags & SEC_LINKER_CREATED) == 0)
6409 continue;
6410
6411 if (s == htab->plt
6412 || s == htab->got)
6413 {
6414 /* We'd like to strip these sections if they aren't needed, but if
6415 we've exported dynamic symbols from them we must leave them.
6416 It's too late to tell BFD to get rid of the symbols. */
6417 if (htab->elf.hplt != NULL)
6418 strip_section = FALSE;
6419 /* Strip this section if we don't need it; see the
6420 comment below. */
6421 }
6422 else if (s == htab->iplt
6423 || s == htab->glink
6424 || s == htab->glink_eh_frame
6425 || s == htab->sgotplt
6426 || s == htab->sbss
6427 || s == htab->dynbss
6428 || s == htab->dynsbss
6429 || s == htab->sdata[0].section
6430 || s == htab->sdata[1].section)
6431 {
6432 /* Strip these too. */
6433 }
6434 else if (CONST_STRNEQ (bfd_get_section_name (htab->elf.dynobj, s),
6435 ".rela"))
6436 {
6437 if (s->size != 0)
6438 {
6439 /* Remember whether there are any relocation sections. */
6440 relocs = TRUE;
6441
6442 /* We use the reloc_count field as a counter if we need
6443 to copy relocs into the output file. */
6444 s->reloc_count = 0;
6445 }
6446 }
6447 else
6448 {
6449 /* It's not one of our sections, so don't allocate space. */
6450 continue;
6451 }
6452
6453 if (s->size == 0 && strip_section)
6454 {
6455 /* If we don't need this section, strip it from the
6456 output file. This is mostly to handle .rela.bss and
6457 .rela.plt. We must create both sections in
6458 create_dynamic_sections, because they must be created
6459 before the linker maps input sections to output
6460 sections. The linker does that before
6461 adjust_dynamic_symbol is called, and it is that
6462 function which decides whether anything needs to go
6463 into these sections. */
6464 s->flags |= SEC_EXCLUDE;
6465 continue;
6466 }
6467
6468 if ((s->flags & SEC_HAS_CONTENTS) == 0)
6469 continue;
6470
6471 /* Allocate memory for the section contents. */
6472 s->contents = bfd_zalloc (htab->elf.dynobj, s->size);
6473 if (s->contents == NULL)
6474 return FALSE;
6475 }
6476
6477 if (htab->elf.dynamic_sections_created)
6478 {
6479 /* Add some entries to the .dynamic section. We fill in the
6480 values later, in ppc_elf_finish_dynamic_sections, but we
6481 must add the entries now so that we get the correct size for
6482 the .dynamic section. The DT_DEBUG entry is filled in by the
6483 dynamic linker and used by the debugger. */
6484 #define add_dynamic_entry(TAG, VAL) \
6485 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
6486
6487 if (info->executable)
6488 {
6489 if (!add_dynamic_entry (DT_DEBUG, 0))
6490 return FALSE;
6491 }
6492
6493 if (htab->plt != NULL && htab->plt->size != 0)
6494 {
6495 if (!add_dynamic_entry (DT_PLTGOT, 0)
6496 || !add_dynamic_entry (DT_PLTRELSZ, 0)
6497 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
6498 || !add_dynamic_entry (DT_JMPREL, 0))
6499 return FALSE;
6500 }
6501
6502 if (htab->plt_type == PLT_NEW
6503 && htab->glink != NULL
6504 && htab->glink->size != 0)
6505 {
6506 if (!add_dynamic_entry (DT_PPC_GOT, 0))
6507 return FALSE;
6508 if (!htab->params->no_tls_get_addr_opt
6509 && htab->tls_get_addr != NULL
6510 && htab->tls_get_addr->plt.plist != NULL
6511 && !add_dynamic_entry (DT_PPC_OPT, PPC_OPT_TLS))
6512 return FALSE;
6513 }
6514
6515 if (relocs)
6516 {
6517 if (!add_dynamic_entry (DT_RELA, 0)
6518 || !add_dynamic_entry (DT_RELASZ, 0)
6519 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
6520 return FALSE;
6521 }
6522
6523 /* If any dynamic relocs apply to a read-only section, then we
6524 need a DT_TEXTREL entry. */
6525 if ((info->flags & DF_TEXTREL) == 0)
6526 elf_link_hash_traverse (elf_hash_table (info), maybe_set_textrel,
6527 info);
6528
6529 if ((info->flags & DF_TEXTREL) != 0)
6530 {
6531 if (!add_dynamic_entry (DT_TEXTREL, 0))
6532 return FALSE;
6533 }
6534 if (htab->is_vxworks
6535 && !elf_vxworks_add_dynamic_entries (output_bfd, info))
6536 return FALSE;
6537 }
6538 #undef add_dynamic_entry
6539
6540 if (htab->glink_eh_frame != NULL
6541 && htab->glink_eh_frame->contents != NULL)
6542 {
6543 unsigned char *p = htab->glink_eh_frame->contents;
6544 bfd_vma val;
6545
6546 memcpy (p, glink_eh_frame_cie, sizeof (glink_eh_frame_cie));
6547 /* CIE length (rewrite in case little-endian). */
6548 bfd_put_32 (htab->elf.dynobj, sizeof (glink_eh_frame_cie) - 4, p);
6549 p += sizeof (glink_eh_frame_cie);
6550 /* FDE length. */
6551 val = htab->glink_eh_frame->size - 4 - sizeof (glink_eh_frame_cie);
6552 bfd_put_32 (htab->elf.dynobj, val, p);
6553 p += 4;
6554 /* CIE pointer. */
6555 val = p - htab->glink_eh_frame->contents;
6556 bfd_put_32 (htab->elf.dynobj, val, p);
6557 p += 4;
6558 /* Offset to .glink. Set later. */
6559 p += 4;
6560 /* .glink size. */
6561 bfd_put_32 (htab->elf.dynobj, htab->glink->size, p);
6562 p += 4;
6563 /* Augmentation. */
6564 p += 1;
6565
6566 if (info->shared
6567 && htab->elf.dynamic_sections_created)
6568 {
6569 bfd_vma adv = (htab->glink->size - GLINK_PLTRESOLVE + 8) >> 2;
6570 if (adv < 64)
6571 *p++ = DW_CFA_advance_loc + adv;
6572 else if (adv < 256)
6573 {
6574 *p++ = DW_CFA_advance_loc1;
6575 *p++ = adv;
6576 }
6577 else if (adv < 65536)
6578 {
6579 *p++ = DW_CFA_advance_loc2;
6580 bfd_put_16 (htab->elf.dynobj, adv, p);
6581 p += 2;
6582 }
6583 else
6584 {
6585 *p++ = DW_CFA_advance_loc4;
6586 bfd_put_32 (htab->elf.dynobj, adv, p);
6587 p += 4;
6588 }
6589 *p++ = DW_CFA_register;
6590 *p++ = 65;
6591 p++;
6592 *p++ = DW_CFA_advance_loc + 4;
6593 *p++ = DW_CFA_restore_extended;
6594 *p++ = 65;
6595 }
6596 BFD_ASSERT ((bfd_vma) ((p + 3 - htab->glink_eh_frame->contents) & -4)
6597 == htab->glink_eh_frame->size);
6598 }
6599
6600 return TRUE;
6601 }
6602
6603 /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
6604
6605 static bfd_boolean
6606 ppc_elf_hash_symbol (struct elf_link_hash_entry *h)
6607 {
6608 if (h->plt.plist != NULL
6609 && !h->def_regular
6610 && (!h->pointer_equality_needed
6611 || !h->ref_regular_nonweak))
6612 return FALSE;
6613
6614 return _bfd_elf_hash_symbol (h);
6615 }
6616 \f
6617 #define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0]))
6618
6619 /* Relaxation trampolines. r12 is available for clobbering (r11, is
6620 used for some functions that are allowed to break the ABI). */
6621 static const int shared_stub_entry[] =
6622 {
6623 0x7c0802a6, /* mflr 0 */
6624 0x429f0005, /* bcl 20, 31, .Lxxx */
6625 0x7d8802a6, /* mflr 12 */
6626 0x3d8c0000, /* addis 12, 12, (xxx-.Lxxx)@ha */
6627 0x398c0000, /* addi 12, 12, (xxx-.Lxxx)@l */
6628 0x7c0803a6, /* mtlr 0 */
6629 0x7d8903a6, /* mtctr 12 */
6630 0x4e800420, /* bctr */
6631 };
6632
6633 static const int stub_entry[] =
6634 {
6635 0x3d800000, /* lis 12,xxx@ha */
6636 0x398c0000, /* addi 12,12,xxx@l */
6637 0x7d8903a6, /* mtctr 12 */
6638 0x4e800420, /* bctr */
6639 };
6640
6641 struct ppc_elf_relax_info
6642 {
6643 unsigned int workaround_size;
6644 };
6645
6646 /* This function implements long branch trampolines, and the ppc476
6647 icache bug workaround. Any section needing trampolines or patch
6648 space for the workaround has its size extended so that we can
6649 add trampolines at the end of the section. */
6650
6651 static bfd_boolean
6652 ppc_elf_relax_section (bfd *abfd,
6653 asection *isec,
6654 struct bfd_link_info *link_info,
6655 bfd_boolean *again)
6656 {
6657 struct one_fixup
6658 {
6659 struct one_fixup *next;
6660 asection *tsec;
6661 /* Final link, can use the symbol offset. For a
6662 relocatable link we use the symbol's index. */
6663 bfd_vma toff;
6664 bfd_vma trampoff;
6665 };
6666
6667 Elf_Internal_Shdr *symtab_hdr;
6668 bfd_byte *contents = NULL;
6669 Elf_Internal_Sym *isymbuf = NULL;
6670 Elf_Internal_Rela *internal_relocs = NULL;
6671 Elf_Internal_Rela *irel, *irelend = NULL;
6672 struct one_fixup *fixups = NULL;
6673 struct ppc_elf_relax_info *relax_info = NULL;
6674 unsigned changes = 0;
6675 bfd_boolean workaround_change;
6676 struct ppc_elf_link_hash_table *htab;
6677 bfd_size_type trampbase, trampoff, newsize;
6678 asection *got2;
6679 bfd_boolean maybe_pasted;
6680
6681 *again = FALSE;
6682
6683 /* No need to do anything with non-alloc or non-code sections. */
6684 if ((isec->flags & SEC_ALLOC) == 0
6685 || (isec->flags & SEC_CODE) == 0
6686 || (isec->flags & SEC_LINKER_CREATED) != 0
6687 || isec->size < 4)
6688 return TRUE;
6689
6690 /* We cannot represent the required PIC relocs in the output, so don't
6691 do anything. The linker doesn't support mixing -shared and -r
6692 anyway. */
6693 if (link_info->relocatable && link_info->shared)
6694 return TRUE;
6695
6696 htab = ppc_elf_hash_table (link_info);
6697 if (htab == NULL)
6698 return TRUE;
6699
6700 isec->size = (isec->size + 3) & -4;
6701 if (isec->rawsize == 0)
6702 isec->rawsize = isec->size;
6703 trampbase = isec->size;
6704
6705 BFD_ASSERT (isec->sec_info_type == SEC_INFO_TYPE_NONE
6706 || isec->sec_info_type == SEC_INFO_TYPE_TARGET);
6707 isec->sec_info_type = SEC_INFO_TYPE_TARGET;
6708
6709 if (htab->params->ppc476_workaround)
6710 {
6711 if (elf_section_data (isec)->sec_info == NULL)
6712 {
6713 elf_section_data (isec)->sec_info
6714 = bfd_zalloc (abfd, sizeof (struct ppc_elf_relax_info));
6715 if (elf_section_data (isec)->sec_info == NULL)
6716 return FALSE;
6717 }
6718 relax_info = elf_section_data (isec)->sec_info;
6719 trampbase -= relax_info->workaround_size;
6720 }
6721
6722 maybe_pasted = (strcmp (isec->output_section->name, ".init") == 0
6723 || strcmp (isec->output_section->name, ".fini") == 0);
6724 /* Space for a branch around any trampolines. */
6725 trampoff = trampbase;
6726 if (maybe_pasted && trampbase == isec->rawsize)
6727 trampoff += 4;
6728
6729 symtab_hdr = &elf_symtab_hdr (abfd);
6730
6731 if (htab->params->branch_trampolines)
6732 {
6733 /* Get a copy of the native relocations. */
6734 if (isec->reloc_count != 0)
6735 {
6736 internal_relocs = _bfd_elf_link_read_relocs (abfd, isec, NULL, NULL,
6737 link_info->keep_memory);
6738 if (internal_relocs == NULL)
6739 goto error_return;
6740 }
6741
6742 got2 = bfd_get_section_by_name (abfd, ".got2");
6743
6744 irelend = internal_relocs + isec->reloc_count;
6745 for (irel = internal_relocs; irel < irelend; irel++)
6746 {
6747 unsigned long r_type = ELF32_R_TYPE (irel->r_info);
6748 bfd_vma toff, roff;
6749 asection *tsec;
6750 struct one_fixup *f;
6751 size_t insn_offset = 0;
6752 bfd_vma max_branch_offset, val;
6753 bfd_byte *hit_addr;
6754 unsigned long t0;
6755 struct elf_link_hash_entry *h;
6756 struct plt_entry **plist;
6757 unsigned char sym_type;
6758
6759 switch (r_type)
6760 {
6761 case R_PPC_REL24:
6762 case R_PPC_LOCAL24PC:
6763 case R_PPC_PLTREL24:
6764 max_branch_offset = 1 << 25;
6765 break;
6766
6767 case R_PPC_REL14:
6768 case R_PPC_REL14_BRTAKEN:
6769 case R_PPC_REL14_BRNTAKEN:
6770 max_branch_offset = 1 << 15;
6771 break;
6772
6773 default:
6774 continue;
6775 }
6776
6777 /* Get the value of the symbol referred to by the reloc. */
6778 h = NULL;
6779 if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
6780 {
6781 /* A local symbol. */
6782 Elf_Internal_Sym *isym;
6783
6784 /* Read this BFD's local symbols. */
6785 if (isymbuf == NULL)
6786 {
6787 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
6788 if (isymbuf == NULL)
6789 isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
6790 symtab_hdr->sh_info, 0,
6791 NULL, NULL, NULL);
6792 if (isymbuf == 0)
6793 goto error_return;
6794 }
6795 isym = isymbuf + ELF32_R_SYM (irel->r_info);
6796 if (isym->st_shndx == SHN_UNDEF)
6797 tsec = bfd_und_section_ptr;
6798 else if (isym->st_shndx == SHN_ABS)
6799 tsec = bfd_abs_section_ptr;
6800 else if (isym->st_shndx == SHN_COMMON)
6801 tsec = bfd_com_section_ptr;
6802 else
6803 tsec = bfd_section_from_elf_index (abfd, isym->st_shndx);
6804
6805 toff = isym->st_value;
6806 sym_type = ELF_ST_TYPE (isym->st_info);
6807 }
6808 else
6809 {
6810 /* Global symbol handling. */
6811 unsigned long indx;
6812
6813 indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
6814 h = elf_sym_hashes (abfd)[indx];
6815
6816 while (h->root.type == bfd_link_hash_indirect
6817 || h->root.type == bfd_link_hash_warning)
6818 h = (struct elf_link_hash_entry *) h->root.u.i.link;
6819
6820 if (h->root.type == bfd_link_hash_defined
6821 || h->root.type == bfd_link_hash_defweak)
6822 {
6823 tsec = h->root.u.def.section;
6824 toff = h->root.u.def.value;
6825 }
6826 else if (h->root.type == bfd_link_hash_undefined
6827 || h->root.type == bfd_link_hash_undefweak)
6828 {
6829 tsec = bfd_und_section_ptr;
6830 toff = link_info->relocatable ? indx : 0;
6831 }
6832 else
6833 continue;
6834
6835 /* If this branch is to __tls_get_addr then we may later
6836 optimise away the call. We won't be needing a long-
6837 branch stub in that case. */
6838 if (link_info->executable
6839 && !link_info->relocatable
6840 && h == htab->tls_get_addr
6841 && irel != internal_relocs)
6842 {
6843 unsigned long t_symndx = ELF32_R_SYM (irel[-1].r_info);
6844 unsigned long t_rtype = ELF32_R_TYPE (irel[-1].r_info);
6845 unsigned int tls_mask = 0;
6846
6847 /* The previous reloc should be one of R_PPC_TLSGD or
6848 R_PPC_TLSLD, or for older object files, a reloc
6849 on the __tls_get_addr arg setup insn. Get tls
6850 mask bits from the symbol on that reloc. */
6851 if (t_symndx < symtab_hdr->sh_info)
6852 {
6853 bfd_vma *local_got_offsets = elf_local_got_offsets (abfd);
6854
6855 if (local_got_offsets != NULL)
6856 {
6857 struct plt_entry **local_plt = (struct plt_entry **)
6858 (local_got_offsets + symtab_hdr->sh_info);
6859 char *lgot_masks = (char *)
6860 (local_plt + symtab_hdr->sh_info);
6861 tls_mask = lgot_masks[t_symndx];
6862 }
6863 }
6864 else
6865 {
6866 struct elf_link_hash_entry *th
6867 = elf_sym_hashes (abfd)[t_symndx - symtab_hdr->sh_info];
6868
6869 while (th->root.type == bfd_link_hash_indirect
6870 || th->root.type == bfd_link_hash_warning)
6871 th = (struct elf_link_hash_entry *) th->root.u.i.link;
6872
6873 tls_mask
6874 = ((struct ppc_elf_link_hash_entry *) th)->tls_mask;
6875 }
6876
6877 /* The mask bits tell us if the call will be
6878 optimised away. */
6879 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0
6880 && (t_rtype == R_PPC_TLSGD
6881 || t_rtype == R_PPC_GOT_TLSGD16
6882 || t_rtype == R_PPC_GOT_TLSGD16_LO))
6883 continue;
6884 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0
6885 && (t_rtype == R_PPC_TLSLD
6886 || t_rtype == R_PPC_GOT_TLSLD16
6887 || t_rtype == R_PPC_GOT_TLSLD16_LO))
6888 continue;
6889 }
6890
6891 sym_type = h->type;
6892 }
6893
6894 /* The condition here under which we call find_plt_ent must
6895 match that in relocate_section. If we call find_plt_ent here
6896 but not in relocate_section, or vice versa, then the branch
6897 destination used here may be incorrect. */
6898 plist = NULL;
6899 if (h != NULL)
6900 {
6901 /* We know is_branch_reloc (r_type) is true. */
6902 if (h->type == STT_GNU_IFUNC
6903 || r_type == R_PPC_PLTREL24)
6904 plist = &h->plt.plist;
6905 }
6906 else if (sym_type == STT_GNU_IFUNC
6907 && elf_local_got_offsets (abfd) != NULL)
6908 {
6909 bfd_vma *local_got_offsets = elf_local_got_offsets (abfd);
6910 struct plt_entry **local_plt = (struct plt_entry **)
6911 (local_got_offsets + symtab_hdr->sh_info);
6912 plist = local_plt + ELF32_R_SYM (irel->r_info);
6913 }
6914 if (plist != NULL)
6915 {
6916 bfd_vma addend = 0;
6917 struct plt_entry *ent;
6918
6919 if (r_type == R_PPC_PLTREL24 && link_info->shared)
6920 addend = irel->r_addend;
6921 ent = find_plt_ent (plist, got2, addend);
6922 if (ent != NULL)
6923 {
6924 if (htab->plt_type == PLT_NEW
6925 || h == NULL
6926 || !htab->elf.dynamic_sections_created
6927 || h->dynindx == -1)
6928 {
6929 tsec = htab->glink;
6930 toff = ent->glink_offset;
6931 }
6932 else
6933 {
6934 tsec = htab->plt;
6935 toff = ent->plt.offset;
6936 }
6937 }
6938 }
6939
6940 /* If the branch and target are in the same section, you have
6941 no hope of adding stubs. We'll error out later should the
6942 branch overflow. */
6943 if (tsec == isec)
6944 continue;
6945
6946 /* There probably isn't any reason to handle symbols in
6947 SEC_MERGE sections; SEC_MERGE doesn't seem a likely
6948 attribute for a code section, and we are only looking at
6949 branches. However, implement it correctly here as a
6950 reference for other target relax_section functions. */
6951 if (0 && tsec->sec_info_type == SEC_INFO_TYPE_MERGE)
6952 {
6953 /* At this stage in linking, no SEC_MERGE symbol has been
6954 adjusted, so all references to such symbols need to be
6955 passed through _bfd_merged_section_offset. (Later, in
6956 relocate_section, all SEC_MERGE symbols *except* for
6957 section symbols have been adjusted.)
6958
6959 gas may reduce relocations against symbols in SEC_MERGE
6960 sections to a relocation against the section symbol when
6961 the original addend was zero. When the reloc is against
6962 a section symbol we should include the addend in the
6963 offset passed to _bfd_merged_section_offset, since the
6964 location of interest is the original symbol. On the
6965 other hand, an access to "sym+addend" where "sym" is not
6966 a section symbol should not include the addend; Such an
6967 access is presumed to be an offset from "sym"; The
6968 location of interest is just "sym". */
6969 if (sym_type == STT_SECTION)
6970 toff += irel->r_addend;
6971
6972 toff
6973 = _bfd_merged_section_offset (abfd, &tsec,
6974 elf_section_data (tsec)->sec_info,
6975 toff);
6976
6977 if (sym_type != STT_SECTION)
6978 toff += irel->r_addend;
6979 }
6980 /* PLTREL24 addends are special. */
6981 else if (r_type != R_PPC_PLTREL24)
6982 toff += irel->r_addend;
6983
6984 /* Attempted -shared link of non-pic code loses. */
6985 if ((!link_info->relocatable
6986 && tsec == bfd_und_section_ptr)
6987 || tsec->output_section == NULL
6988 || (tsec->owner != NULL
6989 && (tsec->owner->flags & BFD_PLUGIN) != 0))
6990 continue;
6991
6992 roff = irel->r_offset;
6993
6994 /* If the branch is in range, no need to do anything. */
6995 if (tsec != bfd_und_section_ptr
6996 && (!link_info->relocatable
6997 /* A relocatable link may have sections moved during
6998 final link, so do not presume they remain in range. */
6999 || tsec->output_section == isec->output_section))
7000 {
7001 bfd_vma symaddr, reladdr;
7002
7003 symaddr = tsec->output_section->vma + tsec->output_offset + toff;
7004 reladdr = isec->output_section->vma + isec->output_offset + roff;
7005 if (symaddr - reladdr + max_branch_offset
7006 < 2 * max_branch_offset)
7007 continue;
7008 }
7009
7010 /* Look for an existing fixup to this address. */
7011 for (f = fixups; f ; f = f->next)
7012 if (f->tsec == tsec && f->toff == toff)
7013 break;
7014
7015 if (f == NULL)
7016 {
7017 size_t size;
7018 unsigned long stub_rtype;
7019
7020 val = trampoff - roff;
7021 if (val >= max_branch_offset)
7022 /* Oh dear, we can't reach a trampoline. Don't try to add
7023 one. We'll report an error later. */
7024 continue;
7025
7026 if (link_info->shared)
7027 {
7028 size = 4 * ARRAY_SIZE (shared_stub_entry);
7029 insn_offset = 12;
7030 }
7031 else
7032 {
7033 size = 4 * ARRAY_SIZE (stub_entry);
7034 insn_offset = 0;
7035 }
7036 stub_rtype = R_PPC_RELAX;
7037 if (tsec == htab->plt
7038 || tsec == htab->glink)
7039 {
7040 stub_rtype = R_PPC_RELAX_PLT;
7041 if (r_type == R_PPC_PLTREL24)
7042 stub_rtype = R_PPC_RELAX_PLTREL24;
7043 }
7044
7045 /* Hijack the old relocation. Since we need two
7046 relocations for this use a "composite" reloc. */
7047 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
7048 stub_rtype);
7049 irel->r_offset = trampoff + insn_offset;
7050 if (r_type == R_PPC_PLTREL24
7051 && stub_rtype != R_PPC_RELAX_PLTREL24)
7052 irel->r_addend = 0;
7053
7054 /* Record the fixup so we don't do it again this section. */
7055 f = bfd_malloc (sizeof (*f));
7056 f->next = fixups;
7057 f->tsec = tsec;
7058 f->toff = toff;
7059 f->trampoff = trampoff;
7060 fixups = f;
7061
7062 trampoff += size;
7063 changes++;
7064 }
7065 else
7066 {
7067 val = f->trampoff - roff;
7068 if (val >= max_branch_offset)
7069 continue;
7070
7071 /* Nop out the reloc, since we're finalizing things here. */
7072 irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
7073 }
7074
7075 /* Get the section contents. */
7076 if (contents == NULL)
7077 {
7078 /* Get cached copy if it exists. */
7079 if (elf_section_data (isec)->this_hdr.contents != NULL)
7080 contents = elf_section_data (isec)->this_hdr.contents;
7081 /* Go get them off disk. */
7082 else if (!bfd_malloc_and_get_section (abfd, isec, &contents))
7083 goto error_return;
7084 }
7085
7086 /* Fix up the existing branch to hit the trampoline. */
7087 hit_addr = contents + roff;
7088 switch (r_type)
7089 {
7090 case R_PPC_REL24:
7091 case R_PPC_LOCAL24PC:
7092 case R_PPC_PLTREL24:
7093 t0 = bfd_get_32 (abfd, hit_addr);
7094 t0 &= ~0x3fffffc;
7095 t0 |= val & 0x3fffffc;
7096 bfd_put_32 (abfd, t0, hit_addr);
7097 break;
7098
7099 case R_PPC_REL14:
7100 case R_PPC_REL14_BRTAKEN:
7101 case R_PPC_REL14_BRNTAKEN:
7102 t0 = bfd_get_32 (abfd, hit_addr);
7103 t0 &= ~0xfffc;
7104 t0 |= val & 0xfffc;
7105 bfd_put_32 (abfd, t0, hit_addr);
7106 break;
7107 }
7108 }
7109
7110 while (fixups != NULL)
7111 {
7112 struct one_fixup *f = fixups;
7113 fixups = fixups->next;
7114 free (f);
7115 }
7116 }
7117
7118 workaround_change = FALSE;
7119 newsize = trampoff;
7120 if (htab->params->ppc476_workaround
7121 && (!link_info->relocatable
7122 || isec->output_section->alignment_power >= htab->params->pagesize_p2))
7123 {
7124 bfd_vma addr, end_addr;
7125 unsigned int crossings;
7126 bfd_vma pagesize = (bfd_vma) 1 << htab->params->pagesize_p2;
7127
7128 addr = isec->output_section->vma + isec->output_offset;
7129 end_addr = addr + trampoff - 1;
7130 addr &= -pagesize;
7131 crossings = ((end_addr & -pagesize) - addr) >> htab->params->pagesize_p2;
7132 if (crossings != 0)
7133 {
7134 /* Keep space aligned, to ensure the patch code itself does
7135 not cross a page. Don't decrease size calculated on a
7136 previous pass as otherwise we might never settle on a layout. */
7137 newsize = 15 - (end_addr & 15);
7138 newsize += crossings * 16;
7139 if (relax_info->workaround_size < newsize)
7140 {
7141 relax_info->workaround_size = newsize;
7142 workaround_change = TRUE;
7143 }
7144 /* Ensure relocate_section is called. */
7145 isec->flags |= SEC_RELOC;
7146 }
7147 newsize = trampoff + relax_info->workaround_size;
7148 }
7149
7150 if (changes || workaround_change)
7151 isec->size = newsize;
7152
7153 if (isymbuf != NULL
7154 && symtab_hdr->contents != (unsigned char *) isymbuf)
7155 {
7156 if (! link_info->keep_memory)
7157 free (isymbuf);
7158 else
7159 {
7160 /* Cache the symbols for elf_link_input_bfd. */
7161 symtab_hdr->contents = (unsigned char *) isymbuf;
7162 }
7163 }
7164
7165 if (contents != NULL
7166 && elf_section_data (isec)->this_hdr.contents != contents)
7167 {
7168 if (!changes && !link_info->keep_memory)
7169 free (contents);
7170 else
7171 {
7172 /* Cache the section contents for elf_link_input_bfd. */
7173 elf_section_data (isec)->this_hdr.contents = contents;
7174 }
7175 }
7176
7177 if (changes != 0)
7178 {
7179 /* Append sufficient NOP relocs so we can write out relocation
7180 information for the trampolines. */
7181 Elf_Internal_Shdr *rel_hdr;
7182 Elf_Internal_Rela *new_relocs = bfd_malloc ((changes + isec->reloc_count)
7183 * sizeof (*new_relocs));
7184 unsigned ix;
7185
7186 if (!new_relocs)
7187 goto error_return;
7188 memcpy (new_relocs, internal_relocs,
7189 isec->reloc_count * sizeof (*new_relocs));
7190 for (ix = changes; ix--;)
7191 {
7192 irel = new_relocs + ix + isec->reloc_count;
7193
7194 irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
7195 }
7196 if (internal_relocs != elf_section_data (isec)->relocs)
7197 free (internal_relocs);
7198 elf_section_data (isec)->relocs = new_relocs;
7199 isec->reloc_count += changes;
7200 rel_hdr = _bfd_elf_single_rel_hdr (isec);
7201 rel_hdr->sh_size += changes * rel_hdr->sh_entsize;
7202 }
7203 else if (internal_relocs != NULL
7204 && elf_section_data (isec)->relocs != internal_relocs)
7205 free (internal_relocs);
7206
7207 *again = changes != 0 || workaround_change;
7208 return TRUE;
7209
7210 error_return:
7211 while (fixups != NULL)
7212 {
7213 struct one_fixup *f = fixups;
7214 fixups = fixups->next;
7215 free (f);
7216 }
7217 if (isymbuf != NULL && (unsigned char *) isymbuf != symtab_hdr->contents)
7218 free (isymbuf);
7219 if (contents != NULL
7220 && elf_section_data (isec)->this_hdr.contents != contents)
7221 free (contents);
7222 if (internal_relocs != NULL
7223 && elf_section_data (isec)->relocs != internal_relocs)
7224 free (internal_relocs);
7225 return FALSE;
7226 }
7227 \f
7228 /* What to do when ld finds relocations against symbols defined in
7229 discarded sections. */
7230
7231 static unsigned int
7232 ppc_elf_action_discarded (asection *sec)
7233 {
7234 if (strcmp (".fixup", sec->name) == 0)
7235 return 0;
7236
7237 if (strcmp (".got2", sec->name) == 0)
7238 return 0;
7239
7240 return _bfd_elf_default_action_discarded (sec);
7241 }
7242 \f
7243 /* Fill in the address for a pointer generated in a linker section. */
7244
7245 static bfd_vma
7246 elf_finish_pointer_linker_section (bfd *input_bfd,
7247 elf_linker_section_t *lsect,
7248 struct elf_link_hash_entry *h,
7249 bfd_vma relocation,
7250 const Elf_Internal_Rela *rel)
7251 {
7252 elf_linker_section_pointers_t *linker_section_ptr;
7253
7254 BFD_ASSERT (lsect != NULL);
7255
7256 if (h != NULL)
7257 {
7258 /* Handle global symbol. */
7259 struct ppc_elf_link_hash_entry *eh;
7260
7261 eh = (struct ppc_elf_link_hash_entry *) h;
7262 BFD_ASSERT (eh->elf.def_regular);
7263 linker_section_ptr = eh->linker_section_pointer;
7264 }
7265 else
7266 {
7267 /* Handle local symbol. */
7268 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
7269
7270 BFD_ASSERT (is_ppc_elf (input_bfd));
7271 BFD_ASSERT (elf_local_ptr_offsets (input_bfd) != NULL);
7272 linker_section_ptr = elf_local_ptr_offsets (input_bfd)[r_symndx];
7273 }
7274
7275 linker_section_ptr = elf_find_pointer_linker_section (linker_section_ptr,
7276 rel->r_addend,
7277 lsect);
7278 BFD_ASSERT (linker_section_ptr != NULL);
7279
7280 /* Offset will always be a multiple of four, so use the bottom bit
7281 as a "written" flag. */
7282 if ((linker_section_ptr->offset & 1) == 0)
7283 {
7284 bfd_put_32 (lsect->section->owner,
7285 relocation + linker_section_ptr->addend,
7286 lsect->section->contents + linker_section_ptr->offset);
7287 linker_section_ptr->offset += 1;
7288 }
7289
7290 relocation = (lsect->section->output_section->vma
7291 + lsect->section->output_offset
7292 + linker_section_ptr->offset - 1
7293 - SYM_VAL (lsect->sym));
7294
7295 #ifdef DEBUG
7296 fprintf (stderr,
7297 "Finish pointer in linker section %s, offset = %ld (0x%lx)\n",
7298 lsect->name, (long) relocation, (long) relocation);
7299 #endif
7300
7301 return relocation;
7302 }
7303
7304 #define PPC_LO(v) ((v) & 0xffff)
7305 #define PPC_HI(v) (((v) >> 16) & 0xffff)
7306 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
7307
7308 static void
7309 write_glink_stub (struct plt_entry *ent, asection *plt_sec, unsigned char *p,
7310 struct bfd_link_info *info)
7311 {
7312 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
7313 bfd *output_bfd = info->output_bfd;
7314 bfd_vma plt;
7315
7316 plt = ((ent->plt.offset & ~1)
7317 + plt_sec->output_section->vma
7318 + plt_sec->output_offset);
7319
7320 if (info->shared)
7321 {
7322 bfd_vma got = 0;
7323
7324 if (ent->addend >= 32768)
7325 got = (ent->addend
7326 + ent->sec->output_section->vma
7327 + ent->sec->output_offset);
7328 else if (htab->elf.hgot != NULL)
7329 got = SYM_VAL (htab->elf.hgot);
7330
7331 plt -= got;
7332
7333 if (plt + 0x8000 < 0x10000)
7334 {
7335 bfd_put_32 (output_bfd, LWZ_11_30 + PPC_LO (plt), p);
7336 p += 4;
7337 bfd_put_32 (output_bfd, MTCTR_11, p);
7338 p += 4;
7339 bfd_put_32 (output_bfd, BCTR, p);
7340 p += 4;
7341 bfd_put_32 (output_bfd, NOP, p);
7342 p += 4;
7343 }
7344 else
7345 {
7346 bfd_put_32 (output_bfd, ADDIS_11_30 + PPC_HA (plt), p);
7347 p += 4;
7348 bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
7349 p += 4;
7350 bfd_put_32 (output_bfd, MTCTR_11, p);
7351 p += 4;
7352 bfd_put_32 (output_bfd, BCTR, p);
7353 p += 4;
7354 }
7355 }
7356 else
7357 {
7358 bfd_put_32 (output_bfd, LIS_11 + PPC_HA (plt), p);
7359 p += 4;
7360 bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
7361 p += 4;
7362 bfd_put_32 (output_bfd, MTCTR_11, p);
7363 p += 4;
7364 bfd_put_32 (output_bfd, BCTR, p);
7365 p += 4;
7366 }
7367 }
7368
7369 /* Return true if symbol is defined statically. */
7370
7371 static bfd_boolean
7372 is_static_defined (struct elf_link_hash_entry *h)
7373 {
7374 return ((h->root.type == bfd_link_hash_defined
7375 || h->root.type == bfd_link_hash_defweak)
7376 && h->root.u.def.section != NULL
7377 && h->root.u.def.section->output_section != NULL);
7378 }
7379
7380 /* If INSN is an opcode that may be used with an @tls operand, return
7381 the transformed insn for TLS optimisation, otherwise return 0. If
7382 REG is non-zero only match an insn with RB or RA equal to REG. */
7383
7384 unsigned int
7385 _bfd_elf_ppc_at_tls_transform (unsigned int insn, unsigned int reg)
7386 {
7387 unsigned int rtra;
7388
7389 if ((insn & (0x3f << 26)) != 31 << 26)
7390 return 0;
7391
7392 if (reg == 0 || ((insn >> 11) & 0x1f) == reg)
7393 rtra = insn & ((1 << 26) - (1 << 16));
7394 else if (((insn >> 16) & 0x1f) == reg)
7395 rtra = (insn & (0x1f << 21)) | ((insn & (0x1f << 11)) << 5);
7396 else
7397 return 0;
7398
7399 if ((insn & (0x3ff << 1)) == 266 << 1)
7400 /* add -> addi. */
7401 insn = 14 << 26;
7402 else if ((insn & (0x1f << 1)) == 23 << 1
7403 && ((insn & (0x1f << 6)) < 14 << 6
7404 || ((insn & (0x1f << 6)) >= 16 << 6
7405 && (insn & (0x1f << 6)) < 24 << 6)))
7406 /* load and store indexed -> dform. */
7407 insn = (32 | ((insn >> 6) & 0x1f)) << 26;
7408 else if ((insn & (((0x1a << 5) | 0x1f) << 1)) == 21 << 1)
7409 /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
7410 insn = ((58 | ((insn >> 6) & 4)) << 26) | ((insn >> 6) & 1);
7411 else if ((insn & (((0x1f << 5) | 0x1f) << 1)) == 341 << 1)
7412 /* lwax -> lwa. */
7413 insn = (58 << 26) | 2;
7414 else
7415 return 0;
7416 insn |= rtra;
7417 return insn;
7418 }
7419
7420 /* If INSN is an opcode that may be used with an @tprel operand, return
7421 the transformed insn for an undefined weak symbol, ie. with the
7422 thread pointer REG operand removed. Otherwise return 0. */
7423
7424 unsigned int
7425 _bfd_elf_ppc_at_tprel_transform (unsigned int insn, unsigned int reg)
7426 {
7427 if ((insn & (0x1f << 16)) == reg << 16
7428 && ((insn & (0x3f << 26)) == 14u << 26 /* addi */
7429 || (insn & (0x3f << 26)) == 15u << 26 /* addis */
7430 || (insn & (0x3f << 26)) == 32u << 26 /* lwz */
7431 || (insn & (0x3f << 26)) == 34u << 26 /* lbz */
7432 || (insn & (0x3f << 26)) == 36u << 26 /* stw */
7433 || (insn & (0x3f << 26)) == 38u << 26 /* stb */
7434 || (insn & (0x3f << 26)) == 40u << 26 /* lhz */
7435 || (insn & (0x3f << 26)) == 42u << 26 /* lha */
7436 || (insn & (0x3f << 26)) == 44u << 26 /* sth */
7437 || (insn & (0x3f << 26)) == 46u << 26 /* lmw */
7438 || (insn & (0x3f << 26)) == 47u << 26 /* stmw */
7439 || (insn & (0x3f << 26)) == 48u << 26 /* lfs */
7440 || (insn & (0x3f << 26)) == 50u << 26 /* lfd */
7441 || (insn & (0x3f << 26)) == 52u << 26 /* stfs */
7442 || (insn & (0x3f << 26)) == 54u << 26 /* stfd */
7443 || ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
7444 && (insn & 3) != 1)
7445 || ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */
7446 && ((insn & 3) == 0 || (insn & 3) == 3))))
7447 {
7448 insn &= ~(0x1f << 16);
7449 }
7450 else if ((insn & (0x1f << 21)) == reg << 21
7451 && ((insn & (0x3e << 26)) == 24u << 26 /* ori, oris */
7452 || (insn & (0x3e << 26)) == 26u << 26 /* xori,xoris */
7453 || (insn & (0x3e << 26)) == 28u << 26 /* andi,andis */))
7454 {
7455 insn &= ~(0x1f << 21);
7456 insn |= (insn & (0x1f << 16)) << 5;
7457 if ((insn & (0x3e << 26)) == 26 << 26 /* xori,xoris */)
7458 insn -= 2 >> 26; /* convert to ori,oris */
7459 }
7460 else
7461 insn = 0;
7462 return insn;
7463 }
7464
7465 static bfd_boolean
7466 is_insn_ds_form (unsigned int insn)
7467 {
7468 return ((insn & (0x3f << 26)) == 58u << 26 /* ld,ldu,lwa */
7469 || (insn & (0x3f << 26)) == 62u << 26 /* std,stdu,stq */
7470 || (insn & (0x3f << 26)) == 57u << 26 /* lfdp */
7471 || (insn & (0x3f << 26)) == 61u << 26 /* stfdp */);
7472 }
7473
7474 static bfd_boolean
7475 is_insn_dq_form (unsigned int insn)
7476 {
7477 return (insn & (0x3f << 26)) == 56u << 26; /* lq */
7478 }
7479
7480 /* The RELOCATE_SECTION function is called by the ELF backend linker
7481 to handle the relocations for a section.
7482
7483 The relocs are always passed as Rela structures; if the section
7484 actually uses Rel structures, the r_addend field will always be
7485 zero.
7486
7487 This function is responsible for adjust the section contents as
7488 necessary, and (if using Rela relocs and generating a
7489 relocatable output file) adjusting the reloc addend as
7490 necessary.
7491
7492 This function does not have to worry about setting the reloc
7493 address or the reloc symbol index.
7494
7495 LOCAL_SYMS is a pointer to the swapped in local symbols.
7496
7497 LOCAL_SECTIONS is an array giving the section in the input file
7498 corresponding to the st_shndx field of each local symbol.
7499
7500 The global hash table entry for the global symbols can be found
7501 via elf_sym_hashes (input_bfd).
7502
7503 When generating relocatable output, this function must handle
7504 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
7505 going to be the section symbol corresponding to the output
7506 section, which means that the addend must be adjusted
7507 accordingly. */
7508
7509 static bfd_boolean
7510 ppc_elf_relocate_section (bfd *output_bfd,
7511 struct bfd_link_info *info,
7512 bfd *input_bfd,
7513 asection *input_section,
7514 bfd_byte *contents,
7515 Elf_Internal_Rela *relocs,
7516 Elf_Internal_Sym *local_syms,
7517 asection **local_sections)
7518 {
7519 Elf_Internal_Shdr *symtab_hdr;
7520 struct elf_link_hash_entry **sym_hashes;
7521 struct ppc_elf_link_hash_table *htab;
7522 Elf_Internal_Rela *rel;
7523 Elf_Internal_Rela *relend;
7524 Elf_Internal_Rela outrel;
7525 asection *got2;
7526 bfd_vma *local_got_offsets;
7527 bfd_boolean ret = TRUE;
7528 bfd_vma d_offset = (bfd_big_endian (output_bfd) ? 2 : 0);
7529 bfd_boolean is_vxworks_tls;
7530
7531 #ifdef DEBUG
7532 _bfd_error_handler ("ppc_elf_relocate_section called for %B section %A, "
7533 "%ld relocations%s",
7534 input_bfd, input_section,
7535 (long) input_section->reloc_count,
7536 (info->relocatable) ? " (relocatable)" : "");
7537 #endif
7538
7539 got2 = bfd_get_section_by_name (input_bfd, ".got2");
7540
7541 /* Initialize howto table if not already done. */
7542 if (!ppc_elf_howto_table[R_PPC_ADDR32])
7543 ppc_elf_howto_init ();
7544
7545 htab = ppc_elf_hash_table (info);
7546 local_got_offsets = elf_local_got_offsets (input_bfd);
7547 symtab_hdr = &elf_symtab_hdr (input_bfd);
7548 sym_hashes = elf_sym_hashes (input_bfd);
7549 /* We have to handle relocations in vxworks .tls_vars sections
7550 specially, because the dynamic loader is 'weird'. */
7551 is_vxworks_tls = (htab->is_vxworks && info->shared
7552 && !strcmp (input_section->output_section->name,
7553 ".tls_vars"));
7554 rel = relocs;
7555 relend = relocs + input_section->reloc_count;
7556 for (; rel < relend; rel++)
7557 {
7558 enum elf_ppc_reloc_type r_type;
7559 bfd_vma addend;
7560 bfd_reloc_status_type r;
7561 Elf_Internal_Sym *sym;
7562 asection *sec;
7563 struct elf_link_hash_entry *h;
7564 const char *sym_name;
7565 reloc_howto_type *howto;
7566 unsigned long r_symndx;
7567 bfd_vma relocation;
7568 bfd_vma branch_bit, from;
7569 bfd_boolean unresolved_reloc;
7570 bfd_boolean warned;
7571 unsigned int tls_type, tls_mask, tls_gd;
7572 struct plt_entry **ifunc;
7573
7574 r_type = ELF32_R_TYPE (rel->r_info);
7575 sym = NULL;
7576 sec = NULL;
7577 h = NULL;
7578 unresolved_reloc = FALSE;
7579 warned = FALSE;
7580 r_symndx = ELF32_R_SYM (rel->r_info);
7581
7582 if (r_symndx < symtab_hdr->sh_info)
7583 {
7584 sym = local_syms + r_symndx;
7585 sec = local_sections[r_symndx];
7586 sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
7587
7588 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
7589 }
7590 else
7591 {
7592 bfd_boolean ignored;
7593
7594 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
7595 r_symndx, symtab_hdr, sym_hashes,
7596 h, sec, relocation,
7597 unresolved_reloc, warned, ignored);
7598
7599 sym_name = h->root.root.string;
7600 }
7601
7602 if (sec != NULL && discarded_section (sec))
7603 {
7604 /* For relocs against symbols from removed linkonce sections,
7605 or sections discarded by a linker script, we just want the
7606 section contents zeroed. Avoid any special processing. */
7607 howto = NULL;
7608 if (r_type < R_PPC_max)
7609 howto = ppc_elf_howto_table[r_type];
7610 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
7611 rel, 1, relend, howto, 0, contents);
7612 }
7613
7614 if (info->relocatable)
7615 {
7616 if (got2 != NULL
7617 && r_type == R_PPC_PLTREL24
7618 && rel->r_addend != 0)
7619 {
7620 /* R_PPC_PLTREL24 is rather special. If non-zero, the
7621 addend specifies the GOT pointer offset within .got2. */
7622 rel->r_addend += got2->output_offset;
7623 }
7624 if (r_type != R_PPC_RELAX_PLT
7625 && r_type != R_PPC_RELAX_PLTREL24
7626 && r_type != R_PPC_RELAX)
7627 continue;
7628 }
7629
7630 /* TLS optimizations. Replace instruction sequences and relocs
7631 based on information we collected in tls_optimize. We edit
7632 RELOCS so that --emit-relocs will output something sensible
7633 for the final instruction stream. */
7634 tls_mask = 0;
7635 tls_gd = 0;
7636 if (h != NULL)
7637 tls_mask = ((struct ppc_elf_link_hash_entry *) h)->tls_mask;
7638 else if (local_got_offsets != NULL)
7639 {
7640 struct plt_entry **local_plt;
7641 char *lgot_masks;
7642 local_plt
7643 = (struct plt_entry **) (local_got_offsets + symtab_hdr->sh_info);
7644 lgot_masks = (char *) (local_plt + symtab_hdr->sh_info);
7645 tls_mask = lgot_masks[r_symndx];
7646 }
7647
7648 /* Ensure reloc mapping code below stays sane. */
7649 if ((R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TLSGD16 & 3)
7650 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TLSGD16_LO & 3)
7651 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TLSGD16_HI & 3)
7652 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TLSGD16_HA & 3)
7653 || (R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TPREL16 & 3)
7654 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TPREL16_LO & 3)
7655 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TPREL16_HI & 3)
7656 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TPREL16_HA & 3))
7657 abort ();
7658 switch (r_type)
7659 {
7660 default:
7661 break;
7662
7663 case R_PPC_GOT_TPREL16:
7664 case R_PPC_GOT_TPREL16_LO:
7665 if ((tls_mask & TLS_TLS) != 0
7666 && (tls_mask & TLS_TPREL) == 0)
7667 {
7668 bfd_vma insn;
7669
7670 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset);
7671 insn &= 31 << 21;
7672 insn |= 0x3c020000; /* addis 0,2,0 */
7673 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset);
7674 r_type = R_PPC_TPREL16_HA;
7675 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7676 }
7677 break;
7678
7679 case R_PPC_TLS:
7680 if ((tls_mask & TLS_TLS) != 0
7681 && (tls_mask & TLS_TPREL) == 0)
7682 {
7683 bfd_vma insn;
7684
7685 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
7686 insn = _bfd_elf_ppc_at_tls_transform (insn, 2);
7687 if (insn == 0)
7688 abort ();
7689 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
7690 r_type = R_PPC_TPREL16_LO;
7691 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7692
7693 /* Was PPC_TLS which sits on insn boundary, now
7694 PPC_TPREL16_LO which is at low-order half-word. */
7695 rel->r_offset += d_offset;
7696 }
7697 break;
7698
7699 case R_PPC_GOT_TLSGD16_HI:
7700 case R_PPC_GOT_TLSGD16_HA:
7701 tls_gd = TLS_TPRELGD;
7702 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
7703 goto tls_gdld_hi;
7704 break;
7705
7706 case R_PPC_GOT_TLSLD16_HI:
7707 case R_PPC_GOT_TLSLD16_HA:
7708 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
7709 {
7710 tls_gdld_hi:
7711 if ((tls_mask & tls_gd) != 0)
7712 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
7713 + R_PPC_GOT_TPREL16);
7714 else
7715 {
7716 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
7717 rel->r_offset -= d_offset;
7718 r_type = R_PPC_NONE;
7719 }
7720 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7721 }
7722 break;
7723
7724 case R_PPC_GOT_TLSGD16:
7725 case R_PPC_GOT_TLSGD16_LO:
7726 tls_gd = TLS_TPRELGD;
7727 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
7728 goto tls_ldgd_opt;
7729 break;
7730
7731 case R_PPC_GOT_TLSLD16:
7732 case R_PPC_GOT_TLSLD16_LO:
7733 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
7734 {
7735 unsigned int insn1, insn2;
7736 bfd_vma offset;
7737
7738 tls_ldgd_opt:
7739 offset = (bfd_vma) -1;
7740 /* If not using the newer R_PPC_TLSGD/LD to mark
7741 __tls_get_addr calls, we must trust that the call
7742 stays with its arg setup insns, ie. that the next
7743 reloc is the __tls_get_addr call associated with
7744 the current reloc. Edit both insns. */
7745 if (input_section->has_tls_get_addr_call
7746 && rel + 1 < relend
7747 && branch_reloc_hash_match (input_bfd, rel + 1,
7748 htab->tls_get_addr))
7749 offset = rel[1].r_offset;
7750 if ((tls_mask & tls_gd) != 0)
7751 {
7752 /* IE */
7753 insn1 = bfd_get_32 (output_bfd,
7754 contents + rel->r_offset - d_offset);
7755 insn1 &= (1 << 26) - 1;
7756 insn1 |= 32 << 26; /* lwz */
7757 if (offset != (bfd_vma) -1)
7758 {
7759 rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
7760 insn2 = 0x7c631214; /* add 3,3,2 */
7761 bfd_put_32 (output_bfd, insn2, contents + offset);
7762 }
7763 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
7764 + R_PPC_GOT_TPREL16);
7765 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7766 }
7767 else
7768 {
7769 /* LE */
7770 insn1 = 0x3c620000; /* addis 3,2,0 */
7771 if (tls_gd == 0)
7772 {
7773 /* Was an LD reloc. */
7774 for (r_symndx = 0;
7775 r_symndx < symtab_hdr->sh_info;
7776 r_symndx++)
7777 if (local_sections[r_symndx] == sec)
7778 break;
7779 if (r_symndx >= symtab_hdr->sh_info)
7780 r_symndx = STN_UNDEF;
7781 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
7782 if (r_symndx != STN_UNDEF)
7783 rel->r_addend -= (local_syms[r_symndx].st_value
7784 + sec->output_offset
7785 + sec->output_section->vma);
7786 }
7787 r_type = R_PPC_TPREL16_HA;
7788 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7789 if (offset != (bfd_vma) -1)
7790 {
7791 rel[1].r_info = ELF32_R_INFO (r_symndx, R_PPC_TPREL16_LO);
7792 rel[1].r_offset = offset + d_offset;
7793 rel[1].r_addend = rel->r_addend;
7794 insn2 = 0x38630000; /* addi 3,3,0 */
7795 bfd_put_32 (output_bfd, insn2, contents + offset);
7796 }
7797 }
7798 bfd_put_32 (output_bfd, insn1,
7799 contents + rel->r_offset - d_offset);
7800 if (tls_gd == 0)
7801 {
7802 /* We changed the symbol on an LD reloc. Start over
7803 in order to get h, sym, sec etc. right. */
7804 rel--;
7805 continue;
7806 }
7807 }
7808 break;
7809
7810 case R_PPC_TLSGD:
7811 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
7812 {
7813 unsigned int insn2;
7814 bfd_vma offset = rel->r_offset;
7815
7816 if ((tls_mask & TLS_TPRELGD) != 0)
7817 {
7818 /* IE */
7819 r_type = R_PPC_NONE;
7820 insn2 = 0x7c631214; /* add 3,3,2 */
7821 }
7822 else
7823 {
7824 /* LE */
7825 r_type = R_PPC_TPREL16_LO;
7826 rel->r_offset += d_offset;
7827 insn2 = 0x38630000; /* addi 3,3,0 */
7828 }
7829 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7830 bfd_put_32 (output_bfd, insn2, contents + offset);
7831 /* Zap the reloc on the _tls_get_addr call too. */
7832 BFD_ASSERT (offset == rel[1].r_offset);
7833 rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
7834 }
7835 break;
7836
7837 case R_PPC_TLSLD:
7838 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
7839 {
7840 unsigned int insn2;
7841
7842 for (r_symndx = 0;
7843 r_symndx < symtab_hdr->sh_info;
7844 r_symndx++)
7845 if (local_sections[r_symndx] == sec)
7846 break;
7847 if (r_symndx >= symtab_hdr->sh_info)
7848 r_symndx = STN_UNDEF;
7849 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
7850 if (r_symndx != STN_UNDEF)
7851 rel->r_addend -= (local_syms[r_symndx].st_value
7852 + sec->output_offset
7853 + sec->output_section->vma);
7854
7855 rel->r_info = ELF32_R_INFO (r_symndx, R_PPC_TPREL16_LO);
7856 rel->r_offset += d_offset;
7857 insn2 = 0x38630000; /* addi 3,3,0 */
7858 bfd_put_32 (output_bfd, insn2,
7859 contents + rel->r_offset - d_offset);
7860 /* Zap the reloc on the _tls_get_addr call too. */
7861 BFD_ASSERT (rel->r_offset - d_offset == rel[1].r_offset);
7862 rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
7863 rel--;
7864 continue;
7865 }
7866 break;
7867 }
7868
7869 /* Handle other relocations that tweak non-addend part of insn. */
7870 branch_bit = 0;
7871 switch (r_type)
7872 {
7873 default:
7874 break;
7875
7876 /* Branch taken prediction relocations. */
7877 case R_PPC_ADDR14_BRTAKEN:
7878 case R_PPC_REL14_BRTAKEN:
7879 branch_bit = BRANCH_PREDICT_BIT;
7880 /* Fall thru */
7881
7882 /* Branch not taken prediction relocations. */
7883 case R_PPC_ADDR14_BRNTAKEN:
7884 case R_PPC_REL14_BRNTAKEN:
7885 {
7886 bfd_vma insn;
7887
7888 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
7889 insn &= ~BRANCH_PREDICT_BIT;
7890 insn |= branch_bit;
7891
7892 from = (rel->r_offset
7893 + input_section->output_offset
7894 + input_section->output_section->vma);
7895
7896 /* Invert 'y' bit if not the default. */
7897 if ((bfd_signed_vma) (relocation + rel->r_addend - from) < 0)
7898 insn ^= BRANCH_PREDICT_BIT;
7899
7900 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
7901 break;
7902 }
7903 }
7904
7905 ifunc = NULL;
7906 if (!htab->is_vxworks)
7907 {
7908 struct plt_entry *ent;
7909
7910 if (h != NULL)
7911 {
7912 if (h->type == STT_GNU_IFUNC)
7913 ifunc = &h->plt.plist;
7914 }
7915 else if (local_got_offsets != NULL
7916 && ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
7917 {
7918 struct plt_entry **local_plt;
7919
7920 local_plt = (struct plt_entry **) (local_got_offsets
7921 + symtab_hdr->sh_info);
7922 ifunc = local_plt + r_symndx;
7923 }
7924
7925 ent = NULL;
7926 if (ifunc != NULL
7927 && (!info->shared
7928 || is_branch_reloc (r_type)))
7929 {
7930 addend = 0;
7931 if (r_type == R_PPC_PLTREL24 && info->shared)
7932 addend = rel->r_addend;
7933 ent = find_plt_ent (ifunc, got2, addend);
7934 }
7935 if (ent != NULL)
7936 {
7937 if (h == NULL && (ent->plt.offset & 1) == 0)
7938 {
7939 Elf_Internal_Rela rela;
7940 bfd_byte *loc;
7941
7942 rela.r_offset = (htab->iplt->output_section->vma
7943 + htab->iplt->output_offset
7944 + ent->plt.offset);
7945 rela.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
7946 rela.r_addend = relocation;
7947 loc = htab->reliplt->contents;
7948 loc += (htab->reliplt->reloc_count++
7949 * sizeof (Elf32_External_Rela));
7950 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
7951
7952 ent->plt.offset |= 1;
7953 }
7954 if (h == NULL && (ent->glink_offset & 1) == 0)
7955 {
7956 unsigned char *p = ((unsigned char *) htab->glink->contents
7957 + ent->glink_offset);
7958 write_glink_stub (ent, htab->iplt, p, info);
7959 ent->glink_offset |= 1;
7960 }
7961
7962 unresolved_reloc = FALSE;
7963 if (htab->plt_type == PLT_NEW
7964 || !htab->elf.dynamic_sections_created
7965 || h == NULL
7966 || h->dynindx == -1)
7967 relocation = (htab->glink->output_section->vma
7968 + htab->glink->output_offset
7969 + (ent->glink_offset & ~1));
7970 else
7971 relocation = (htab->plt->output_section->vma
7972 + htab->plt->output_offset
7973 + ent->plt.offset);
7974 }
7975 }
7976
7977 addend = rel->r_addend;
7978 tls_type = 0;
7979 howto = NULL;
7980 if (r_type < R_PPC_max)
7981 howto = ppc_elf_howto_table[r_type];
7982 switch (r_type)
7983 {
7984 default:
7985 info->callbacks->einfo
7986 (_("%P: %B: unknown relocation type %d for symbol %s\n"),
7987 input_bfd, (int) r_type, sym_name);
7988
7989 bfd_set_error (bfd_error_bad_value);
7990 ret = FALSE;
7991 continue;
7992
7993 case R_PPC_NONE:
7994 case R_PPC_TLS:
7995 case R_PPC_TLSGD:
7996 case R_PPC_TLSLD:
7997 case R_PPC_EMB_MRKREF:
7998 case R_PPC_GNU_VTINHERIT:
7999 case R_PPC_GNU_VTENTRY:
8000 continue;
8001
8002 /* GOT16 relocations. Like an ADDR16 using the symbol's
8003 address in the GOT as relocation value instead of the
8004 symbol's value itself. Also, create a GOT entry for the
8005 symbol and put the symbol value there. */
8006 case R_PPC_GOT_TLSGD16:
8007 case R_PPC_GOT_TLSGD16_LO:
8008 case R_PPC_GOT_TLSGD16_HI:
8009 case R_PPC_GOT_TLSGD16_HA:
8010 tls_type = TLS_TLS | TLS_GD;
8011 goto dogot;
8012
8013 case R_PPC_GOT_TLSLD16:
8014 case R_PPC_GOT_TLSLD16_LO:
8015 case R_PPC_GOT_TLSLD16_HI:
8016 case R_PPC_GOT_TLSLD16_HA:
8017 tls_type = TLS_TLS | TLS_LD;
8018 goto dogot;
8019
8020 case R_PPC_GOT_TPREL16:
8021 case R_PPC_GOT_TPREL16_LO:
8022 case R_PPC_GOT_TPREL16_HI:
8023 case R_PPC_GOT_TPREL16_HA:
8024 tls_type = TLS_TLS | TLS_TPREL;
8025 goto dogot;
8026
8027 case R_PPC_GOT_DTPREL16:
8028 case R_PPC_GOT_DTPREL16_LO:
8029 case R_PPC_GOT_DTPREL16_HI:
8030 case R_PPC_GOT_DTPREL16_HA:
8031 tls_type = TLS_TLS | TLS_DTPREL;
8032 goto dogot;
8033
8034 case R_PPC_GOT16:
8035 case R_PPC_GOT16_LO:
8036 case R_PPC_GOT16_HI:
8037 case R_PPC_GOT16_HA:
8038 tls_mask = 0;
8039 dogot:
8040 {
8041 /* Relocation is to the entry for this symbol in the global
8042 offset table. */
8043 bfd_vma off;
8044 bfd_vma *offp;
8045 unsigned long indx;
8046
8047 if (htab->got == NULL)
8048 abort ();
8049
8050 indx = 0;
8051 if (tls_type == (TLS_TLS | TLS_LD)
8052 && (h == NULL
8053 || !h->def_dynamic))
8054 offp = &htab->tlsld_got.offset;
8055 else if (h != NULL)
8056 {
8057 bfd_boolean dyn;
8058 dyn = htab->elf.dynamic_sections_created;
8059 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
8060 || (info->shared
8061 && SYMBOL_REFERENCES_LOCAL (info, h)))
8062 /* This is actually a static link, or it is a
8063 -Bsymbolic link and the symbol is defined
8064 locally, or the symbol was forced to be local
8065 because of a version file. */
8066 ;
8067 else
8068 {
8069 BFD_ASSERT (h->dynindx != -1);
8070 indx = h->dynindx;
8071 unresolved_reloc = FALSE;
8072 }
8073 offp = &h->got.offset;
8074 }
8075 else
8076 {
8077 if (local_got_offsets == NULL)
8078 abort ();
8079 offp = &local_got_offsets[r_symndx];
8080 }
8081
8082 /* The offset must always be a multiple of 4. We use the
8083 least significant bit to record whether we have already
8084 processed this entry. */
8085 off = *offp;
8086 if ((off & 1) != 0)
8087 off &= ~1;
8088 else
8089 {
8090 unsigned int tls_m = (tls_mask
8091 & (TLS_LD | TLS_GD | TLS_DTPREL
8092 | TLS_TPREL | TLS_TPRELGD));
8093
8094 if (offp == &htab->tlsld_got.offset)
8095 tls_m = TLS_LD;
8096 else if (h == NULL
8097 || !h->def_dynamic)
8098 tls_m &= ~TLS_LD;
8099
8100 /* We might have multiple got entries for this sym.
8101 Initialize them all. */
8102 do
8103 {
8104 int tls_ty = 0;
8105
8106 if ((tls_m & TLS_LD) != 0)
8107 {
8108 tls_ty = TLS_TLS | TLS_LD;
8109 tls_m &= ~TLS_LD;
8110 }
8111 else if ((tls_m & TLS_GD) != 0)
8112 {
8113 tls_ty = TLS_TLS | TLS_GD;
8114 tls_m &= ~TLS_GD;
8115 }
8116 else if ((tls_m & TLS_DTPREL) != 0)
8117 {
8118 tls_ty = TLS_TLS | TLS_DTPREL;
8119 tls_m &= ~TLS_DTPREL;
8120 }
8121 else if ((tls_m & (TLS_TPREL | TLS_TPRELGD)) != 0)
8122 {
8123 tls_ty = TLS_TLS | TLS_TPREL;
8124 tls_m = 0;
8125 }
8126
8127 /* Generate relocs for the dynamic linker. */
8128 if ((info->shared || indx != 0)
8129 && (offp == &htab->tlsld_got.offset
8130 || h == NULL
8131 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
8132 || h->root.type != bfd_link_hash_undefweak))
8133 {
8134 asection *rsec = htab->relgot;
8135 bfd_byte * loc;
8136
8137 if (ifunc != NULL)
8138 rsec = htab->reliplt;
8139 outrel.r_offset = (htab->got->output_section->vma
8140 + htab->got->output_offset
8141 + off);
8142 outrel.r_addend = 0;
8143 if (tls_ty & (TLS_LD | TLS_GD))
8144 {
8145 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPMOD32);
8146 if (tls_ty == (TLS_TLS | TLS_GD))
8147 {
8148 loc = rsec->contents;
8149 loc += (rsec->reloc_count++
8150 * sizeof (Elf32_External_Rela));
8151 bfd_elf32_swap_reloca_out (output_bfd,
8152 &outrel, loc);
8153 outrel.r_offset += 4;
8154 outrel.r_info
8155 = ELF32_R_INFO (indx, R_PPC_DTPREL32);
8156 }
8157 }
8158 else if (tls_ty == (TLS_TLS | TLS_DTPREL))
8159 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPREL32);
8160 else if (tls_ty == (TLS_TLS | TLS_TPREL))
8161 outrel.r_info = ELF32_R_INFO (indx, R_PPC_TPREL32);
8162 else if (indx != 0)
8163 outrel.r_info = ELF32_R_INFO (indx, R_PPC_GLOB_DAT);
8164 else if (ifunc != NULL)
8165 outrel.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
8166 else
8167 outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
8168 if (indx == 0 && tls_ty != (TLS_TLS | TLS_LD))
8169 {
8170 outrel.r_addend += relocation;
8171 if (tls_ty & (TLS_GD | TLS_DTPREL | TLS_TPREL))
8172 outrel.r_addend -= htab->elf.tls_sec->vma;
8173 }
8174 loc = rsec->contents;
8175 loc += (rsec->reloc_count++
8176 * sizeof (Elf32_External_Rela));
8177 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
8178 }
8179
8180 /* Init the .got section contents if we're not
8181 emitting a reloc. */
8182 else
8183 {
8184 bfd_vma value = relocation;
8185
8186 if (tls_ty == (TLS_TLS | TLS_LD))
8187 value = 1;
8188 else if (tls_ty != 0)
8189 {
8190 value -= htab->elf.tls_sec->vma + DTP_OFFSET;
8191 if (tls_ty == (TLS_TLS | TLS_TPREL))
8192 value += DTP_OFFSET - TP_OFFSET;
8193
8194 if (tls_ty == (TLS_TLS | TLS_GD))
8195 {
8196 bfd_put_32 (output_bfd, value,
8197 htab->got->contents + off + 4);
8198 value = 1;
8199 }
8200 }
8201 bfd_put_32 (output_bfd, value,
8202 htab->got->contents + off);
8203 }
8204
8205 off += 4;
8206 if (tls_ty & (TLS_LD | TLS_GD))
8207 off += 4;
8208 }
8209 while (tls_m != 0);
8210
8211 off = *offp;
8212 *offp = off | 1;
8213 }
8214
8215 if (off >= (bfd_vma) -2)
8216 abort ();
8217
8218 if ((tls_type & TLS_TLS) != 0)
8219 {
8220 if (tls_type != (TLS_TLS | TLS_LD))
8221 {
8222 if ((tls_mask & TLS_LD) != 0
8223 && !(h == NULL
8224 || !h->def_dynamic))
8225 off += 8;
8226 if (tls_type != (TLS_TLS | TLS_GD))
8227 {
8228 if ((tls_mask & TLS_GD) != 0)
8229 off += 8;
8230 if (tls_type != (TLS_TLS | TLS_DTPREL))
8231 {
8232 if ((tls_mask & TLS_DTPREL) != 0)
8233 off += 4;
8234 }
8235 }
8236 }
8237 }
8238
8239 relocation = (htab->got->output_section->vma
8240 + htab->got->output_offset
8241 + off
8242 - SYM_VAL (htab->elf.hgot));
8243
8244 /* Addends on got relocations don't make much sense.
8245 x+off@got is actually x@got+off, and since the got is
8246 generated by a hash table traversal, the value in the
8247 got at entry m+n bears little relation to the entry m. */
8248 if (addend != 0)
8249 info->callbacks->einfo
8250 (_("%P: %H: non-zero addend on %s reloc against `%s'\n"),
8251 input_bfd, input_section, rel->r_offset,
8252 howto->name,
8253 sym_name);
8254 }
8255 break;
8256
8257 /* Relocations that need no special processing. */
8258 case R_PPC_LOCAL24PC:
8259 /* It makes no sense to point a local relocation
8260 at a symbol not in this object. */
8261 if (unresolved_reloc)
8262 {
8263 if (! (*info->callbacks->undefined_symbol) (info,
8264 h->root.root.string,
8265 input_bfd,
8266 input_section,
8267 rel->r_offset,
8268 TRUE))
8269 return FALSE;
8270 continue;
8271 }
8272 break;
8273
8274 case R_PPC_DTPREL16:
8275 case R_PPC_DTPREL16_LO:
8276 case R_PPC_DTPREL16_HI:
8277 case R_PPC_DTPREL16_HA:
8278 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
8279 break;
8280
8281 /* Relocations that may need to be propagated if this is a shared
8282 object. */
8283 case R_PPC_TPREL16:
8284 case R_PPC_TPREL16_LO:
8285 case R_PPC_TPREL16_HI:
8286 case R_PPC_TPREL16_HA:
8287 if (h != NULL
8288 && h->root.type == bfd_link_hash_undefweak
8289 && h->dynindx == -1)
8290 {
8291 /* Make this relocation against an undefined weak symbol
8292 resolve to zero. This is really just a tweak, since
8293 code using weak externs ought to check that they are
8294 defined before using them. */
8295 bfd_byte *p = contents + rel->r_offset - d_offset;
8296 unsigned int insn = bfd_get_32 (output_bfd, p);
8297 insn = _bfd_elf_ppc_at_tprel_transform (insn, 2);
8298 if (insn != 0)
8299 bfd_put_32 (output_bfd, insn, p);
8300 break;
8301 }
8302 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
8303 /* The TPREL16 relocs shouldn't really be used in shared
8304 libs as they will result in DT_TEXTREL being set, but
8305 support them anyway. */
8306 goto dodyn;
8307
8308 case R_PPC_TPREL32:
8309 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
8310 goto dodyn;
8311
8312 case R_PPC_DTPREL32:
8313 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
8314 goto dodyn;
8315
8316 case R_PPC_DTPMOD32:
8317 relocation = 1;
8318 addend = 0;
8319 goto dodyn;
8320
8321 case R_PPC_REL16:
8322 case R_PPC_REL16_LO:
8323 case R_PPC_REL16_HI:
8324 case R_PPC_REL16_HA:
8325 break;
8326
8327 case R_PPC_REL32:
8328 if (h == NULL || h == htab->elf.hgot)
8329 break;
8330 /* fall through */
8331
8332 case R_PPC_ADDR32:
8333 case R_PPC_ADDR16:
8334 case R_PPC_ADDR16_LO:
8335 case R_PPC_ADDR16_HI:
8336 case R_PPC_ADDR16_HA:
8337 case R_PPC_UADDR32:
8338 case R_PPC_UADDR16:
8339 goto dodyn;
8340
8341 case R_PPC_VLE_REL8:
8342 case R_PPC_VLE_REL15:
8343 case R_PPC_VLE_REL24:
8344 case R_PPC_REL24:
8345 case R_PPC_REL14:
8346 case R_PPC_REL14_BRTAKEN:
8347 case R_PPC_REL14_BRNTAKEN:
8348 /* If these relocations are not to a named symbol, they can be
8349 handled right here, no need to bother the dynamic linker. */
8350 if (SYMBOL_CALLS_LOCAL (info, h)
8351 || h == htab->elf.hgot)
8352 break;
8353 /* fall through */
8354
8355 case R_PPC_ADDR24:
8356 case R_PPC_ADDR14:
8357 case R_PPC_ADDR14_BRTAKEN:
8358 case R_PPC_ADDR14_BRNTAKEN:
8359 if (h != NULL && !info->shared)
8360 break;
8361 /* fall through */
8362
8363 dodyn:
8364 if ((input_section->flags & SEC_ALLOC) == 0
8365 || is_vxworks_tls)
8366 break;
8367
8368 if ((info->shared
8369 && !(h != NULL
8370 && ((h->root.type == bfd_link_hash_undefined
8371 && (ELF_ST_VISIBILITY (h->other) == STV_HIDDEN
8372 || ELF_ST_VISIBILITY (h->other) == STV_INTERNAL))
8373 || (h->root.type == bfd_link_hash_undefweak
8374 && ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)))
8375 && (must_be_dyn_reloc (info, r_type)
8376 || !SYMBOL_CALLS_LOCAL (info, h)))
8377 || (ELIMINATE_COPY_RELOCS
8378 && !info->shared
8379 && h != NULL
8380 && h->dynindx != -1
8381 && !h->non_got_ref
8382 && !h->def_regular))
8383 {
8384 int skip;
8385 bfd_byte *loc;
8386 asection *sreloc;
8387 #ifdef DEBUG
8388 fprintf (stderr, "ppc_elf_relocate_section needs to "
8389 "create relocation for %s\n",
8390 (h && h->root.root.string
8391 ? h->root.root.string : "<unknown>"));
8392 #endif
8393
8394 /* When generating a shared object, these relocations
8395 are copied into the output file to be resolved at run
8396 time. */
8397 sreloc = elf_section_data (input_section)->sreloc;
8398 if (ifunc)
8399 sreloc = htab->reliplt;
8400 if (sreloc == NULL)
8401 return FALSE;
8402
8403 skip = 0;
8404 outrel.r_offset = _bfd_elf_section_offset (output_bfd, info,
8405 input_section,
8406 rel->r_offset);
8407 if (outrel.r_offset == (bfd_vma) -1
8408 || outrel.r_offset == (bfd_vma) -2)
8409 skip = (int) outrel.r_offset;
8410 outrel.r_offset += (input_section->output_section->vma
8411 + input_section->output_offset);
8412
8413 if (skip)
8414 memset (&outrel, 0, sizeof outrel);
8415 else if ((h != NULL
8416 && (h->root.type == bfd_link_hash_undefined
8417 || h->root.type == bfd_link_hash_undefweak))
8418 || !SYMBOL_REFERENCES_LOCAL (info, h))
8419 {
8420 BFD_ASSERT (h->dynindx != -1);
8421 unresolved_reloc = FALSE;
8422 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
8423 outrel.r_addend = rel->r_addend;
8424 }
8425 else
8426 {
8427 outrel.r_addend = relocation + rel->r_addend;
8428
8429 if (r_type != R_PPC_ADDR32)
8430 {
8431 long indx = 0;
8432
8433 if (ifunc != NULL)
8434 {
8435 /* If we get here when building a static
8436 executable, then the libc startup function
8437 responsible for applying indirect function
8438 relocations is going to complain about
8439 the reloc type.
8440 If we get here when building a dynamic
8441 executable, it will be because we have
8442 a text relocation. The dynamic loader
8443 will set the text segment writable and
8444 non-executable to apply text relocations.
8445 So we'll segfault when trying to run the
8446 indirection function to resolve the reloc. */
8447 info->callbacks->einfo
8448 (_("%P: %H: relocation %s for indirect "
8449 "function %s unsupported\n"),
8450 input_bfd, input_section, rel->r_offset,
8451 howto->name,
8452 sym_name);
8453 ret = FALSE;
8454 }
8455 else if (r_symndx == STN_UNDEF || bfd_is_abs_section (sec))
8456 ;
8457 else if (sec == NULL || sec->owner == NULL)
8458 {
8459 bfd_set_error (bfd_error_bad_value);
8460 ret = FALSE;
8461 }
8462 else
8463 {
8464 asection *osec;
8465
8466 /* We are turning this relocation into one
8467 against a section symbol. It would be
8468 proper to subtract the symbol's value,
8469 osec->vma, from the emitted reloc addend,
8470 but ld.so expects buggy relocs.
8471 FIXME: Why not always use a zero index? */
8472 osec = sec->output_section;
8473 indx = elf_section_data (osec)->dynindx;
8474 if (indx == 0)
8475 {
8476 osec = htab->elf.text_index_section;
8477 indx = elf_section_data (osec)->dynindx;
8478 }
8479 BFD_ASSERT (indx != 0);
8480 #ifdef DEBUG
8481 if (indx == 0)
8482 printf ("indx=%ld section=%s flags=%08x name=%s\n",
8483 indx, osec->name, osec->flags,
8484 h->root.root.string);
8485 #endif
8486 }
8487
8488 outrel.r_info = ELF32_R_INFO (indx, r_type);
8489 }
8490 else if (ifunc != NULL)
8491 outrel.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
8492 else
8493 outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
8494 }
8495
8496 loc = sreloc->contents;
8497 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
8498 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
8499
8500 if (skip == -1)
8501 continue;
8502
8503 /* This reloc will be computed at runtime. We clear the memory
8504 so that it contains predictable value. */
8505 if (! skip
8506 && ((input_section->flags & SEC_ALLOC) != 0
8507 || ELF32_R_TYPE (outrel.r_info) != R_PPC_RELATIVE))
8508 {
8509 relocation = howto->pc_relative ? outrel.r_offset : 0;
8510 addend = 0;
8511 break;
8512 }
8513 }
8514 break;
8515
8516 case R_PPC_RELAX_PLT:
8517 case R_PPC_RELAX_PLTREL24:
8518 if (h != NULL)
8519 {
8520 struct plt_entry *ent;
8521 bfd_vma got2_addend = 0;
8522
8523 if (r_type == R_PPC_RELAX_PLTREL24)
8524 {
8525 if (info->shared)
8526 got2_addend = addend;
8527 addend = 0;
8528 }
8529 ent = find_plt_ent (&h->plt.plist, got2, got2_addend);
8530 if (htab->plt_type == PLT_NEW)
8531 relocation = (htab->glink->output_section->vma
8532 + htab->glink->output_offset
8533 + ent->glink_offset);
8534 else
8535 relocation = (htab->plt->output_section->vma
8536 + htab->plt->output_offset
8537 + ent->plt.offset);
8538 }
8539 /* Fall thru */
8540
8541 case R_PPC_RELAX:
8542 {
8543 const int *stub;
8544 size_t size;
8545 size_t insn_offset = rel->r_offset;
8546 unsigned int insn;
8547
8548 if (info->shared)
8549 {
8550 relocation -= (input_section->output_section->vma
8551 + input_section->output_offset
8552 + rel->r_offset - 4);
8553 stub = shared_stub_entry;
8554 bfd_put_32 (output_bfd, stub[0], contents + insn_offset - 12);
8555 bfd_put_32 (output_bfd, stub[1], contents + insn_offset - 8);
8556 bfd_put_32 (output_bfd, stub[2], contents + insn_offset - 4);
8557 stub += 3;
8558 size = ARRAY_SIZE (shared_stub_entry) - 3;
8559 }
8560 else
8561 {
8562 stub = stub_entry;
8563 size = ARRAY_SIZE (stub_entry);
8564 }
8565
8566 relocation += addend;
8567 if (info->relocatable)
8568 relocation = 0;
8569
8570 /* First insn is HA, second is LO. */
8571 insn = *stub++;
8572 insn |= ((relocation + 0x8000) >> 16) & 0xffff;
8573 bfd_put_32 (output_bfd, insn, contents + insn_offset);
8574 insn_offset += 4;
8575
8576 insn = *stub++;
8577 insn |= relocation & 0xffff;
8578 bfd_put_32 (output_bfd, insn, contents + insn_offset);
8579 insn_offset += 4;
8580 size -= 2;
8581
8582 while (size != 0)
8583 {
8584 insn = *stub++;
8585 --size;
8586 bfd_put_32 (output_bfd, insn, contents + insn_offset);
8587 insn_offset += 4;
8588 }
8589
8590 /* Rewrite the reloc and convert one of the trailing nop
8591 relocs to describe this relocation. */
8592 BFD_ASSERT (ELF32_R_TYPE (relend[-1].r_info) == R_PPC_NONE);
8593 /* The relocs are at the bottom 2 bytes */
8594 rel[0].r_offset += d_offset;
8595 memmove (rel + 1, rel, (relend - rel - 1) * sizeof (*rel));
8596 rel[0].r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_HA);
8597 rel[1].r_offset += 4;
8598 rel[1].r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_LO);
8599 rel++;
8600 }
8601 continue;
8602
8603 /* Indirect .sdata relocation. */
8604 case R_PPC_EMB_SDAI16:
8605 BFD_ASSERT (htab->sdata[0].section != NULL);
8606 if (!is_static_defined (htab->sdata[0].sym))
8607 {
8608 unresolved_reloc = TRUE;
8609 break;
8610 }
8611 relocation
8612 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[0],
8613 h, relocation, rel);
8614 addend = 0;
8615 break;
8616
8617 /* Indirect .sdata2 relocation. */
8618 case R_PPC_EMB_SDA2I16:
8619 BFD_ASSERT (htab->sdata[1].section != NULL);
8620 if (!is_static_defined (htab->sdata[1].sym))
8621 {
8622 unresolved_reloc = TRUE;
8623 break;
8624 }
8625 relocation
8626 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[1],
8627 h, relocation, rel);
8628 addend = 0;
8629 break;
8630
8631 /* Handle the TOC16 reloc. We want to use the offset within the .got
8632 section, not the actual VMA. This is appropriate when generating
8633 an embedded ELF object, for which the .got section acts like the
8634 AIX .toc section. */
8635 case R_PPC_TOC16: /* phony GOT16 relocations */
8636 if (sec == NULL || sec->output_section == NULL)
8637 {
8638 unresolved_reloc = TRUE;
8639 break;
8640 }
8641 BFD_ASSERT (strcmp (bfd_get_section_name (sec->owner, sec),
8642 ".got") == 0
8643 || strcmp (bfd_get_section_name (sec->owner, sec),
8644 ".cgot") == 0);
8645
8646 addend -= sec->output_section->vma + sec->output_offset + 0x8000;
8647 break;
8648
8649 case R_PPC_PLTREL24:
8650 if (h != NULL && ifunc == NULL)
8651 {
8652 struct plt_entry *ent = find_plt_ent (&h->plt.plist, got2,
8653 info->shared ? addend : 0);
8654 if (ent == NULL
8655 || htab->plt == NULL)
8656 {
8657 /* We didn't make a PLT entry for this symbol. This
8658 happens when statically linking PIC code, or when
8659 using -Bsymbolic. */
8660 }
8661 else
8662 {
8663 /* Relocation is to the entry for this symbol in the
8664 procedure linkage table. */
8665 unresolved_reloc = FALSE;
8666 if (htab->plt_type == PLT_NEW)
8667 relocation = (htab->glink->output_section->vma
8668 + htab->glink->output_offset
8669 + ent->glink_offset);
8670 else
8671 relocation = (htab->plt->output_section->vma
8672 + htab->plt->output_offset
8673 + ent->plt.offset);
8674 }
8675 }
8676
8677 /* R_PPC_PLTREL24 is rather special. If non-zero, the
8678 addend specifies the GOT pointer offset within .got2.
8679 Don't apply it to the relocation field. */
8680 addend = 0;
8681 break;
8682
8683 /* Relocate against _SDA_BASE_. */
8684 case R_PPC_SDAREL16:
8685 {
8686 const char *name;
8687 struct elf_link_hash_entry *sda = htab->sdata[0].sym;
8688
8689 if (sec == NULL
8690 || sec->output_section == NULL
8691 || !is_static_defined (sda))
8692 {
8693 unresolved_reloc = TRUE;
8694 break;
8695 }
8696 addend -= SYM_VAL (sda);
8697
8698 name = bfd_get_section_name (output_bfd, sec->output_section);
8699 if (! ((CONST_STRNEQ (name, ".sdata")
8700 && (name[6] == 0 || name[6] == '.'))
8701 || (CONST_STRNEQ (name, ".sbss")
8702 && (name[5] == 0 || name[5] == '.'))))
8703 {
8704 info->callbacks->einfo
8705 (_("%P: %B: the target (%s) of a %s relocation is "
8706 "in the wrong output section (%s)\n"),
8707 input_bfd,
8708 sym_name,
8709 howto->name,
8710 name);
8711 }
8712 }
8713 break;
8714
8715 /* Relocate against _SDA2_BASE_. */
8716 case R_PPC_EMB_SDA2REL:
8717 {
8718 const char *name;
8719 struct elf_link_hash_entry *sda = htab->sdata[1].sym;
8720
8721 if (sec == NULL
8722 || sec->output_section == NULL
8723 || !is_static_defined (sda))
8724 {
8725 unresolved_reloc = TRUE;
8726 break;
8727 }
8728 addend -= SYM_VAL (sda);
8729
8730 name = bfd_get_section_name (output_bfd, sec->output_section);
8731 if (! (CONST_STRNEQ (name, ".sdata2")
8732 || CONST_STRNEQ (name, ".sbss2")))
8733 {
8734 info->callbacks->einfo
8735 (_("%P: %B: the target (%s) of a %s relocation is "
8736 "in the wrong output section (%s)\n"),
8737 input_bfd,
8738 sym_name,
8739 howto->name,
8740 name);
8741 }
8742 }
8743 break;
8744
8745 case R_PPC_VLE_LO16A:
8746 relocation = (relocation + addend) & 0xffff;
8747 ppc_elf_vle_split16 (output_bfd, contents, rel->r_offset,
8748 relocation, split16a_type);
8749 continue;
8750
8751 case R_PPC_VLE_LO16D:
8752 relocation = (relocation + addend) & 0xffff;
8753 ppc_elf_vle_split16 (output_bfd, contents, rel->r_offset,
8754 relocation, split16d_type);
8755 continue;
8756
8757 case R_PPC_VLE_HI16A:
8758 relocation = ((relocation + addend) >> 16) & 0xffff;
8759 ppc_elf_vle_split16 (output_bfd, contents, rel->r_offset,
8760 relocation, split16a_type);
8761 continue;
8762
8763 case R_PPC_VLE_HI16D:
8764 relocation = ((relocation + addend) >> 16) & 0xffff;
8765 ppc_elf_vle_split16 (output_bfd, contents, rel->r_offset,
8766 relocation, split16d_type);
8767 continue;
8768
8769 case R_PPC_VLE_HA16A:
8770 {
8771 bfd_vma value = relocation + addend;
8772 value = (((value >> 16) + ((value & 0x8000) ? 1 : 0)) & 0xffff);
8773 ppc_elf_vle_split16 (output_bfd, contents, rel->r_offset,
8774 value, split16a_type);
8775 }
8776 continue;
8777
8778 case R_PPC_VLE_HA16D:
8779 {
8780 bfd_vma value = relocation + addend;
8781 value = (((value >> 16) + ((value & 0x8000) ? 1 : 0)) & 0xffff);
8782 ppc_elf_vle_split16 (output_bfd, contents, rel->r_offset,
8783 value, split16d_type);
8784 }
8785 continue;
8786
8787 /* Relocate against either _SDA_BASE_, _SDA2_BASE_, or 0. */
8788 case R_PPC_EMB_SDA21:
8789 case R_PPC_VLE_SDA21:
8790 case R_PPC_EMB_RELSDA:
8791 case R_PPC_VLE_SDA21_LO:
8792 {
8793 const char *name;
8794 int reg;
8795 struct elf_link_hash_entry *sda = NULL;
8796
8797 if (sec == NULL || sec->output_section == NULL)
8798 {
8799 unresolved_reloc = TRUE;
8800 break;
8801 }
8802
8803 name = bfd_get_section_name (output_bfd, sec->output_section);
8804 if (((CONST_STRNEQ (name, ".sdata")
8805 && (name[6] == 0 || name[6] == '.'))
8806 || (CONST_STRNEQ (name, ".sbss")
8807 && (name[5] == 0 || name[5] == '.'))))
8808 {
8809 reg = 13;
8810 sda = htab->sdata[0].sym;
8811 }
8812 else if (CONST_STRNEQ (name, ".sdata2")
8813 || CONST_STRNEQ (name, ".sbss2"))
8814 {
8815 reg = 2;
8816 sda = htab->sdata[1].sym;
8817 }
8818 else if (strcmp (name, ".PPC.EMB.sdata0") == 0
8819 || strcmp (name, ".PPC.EMB.sbss0") == 0)
8820 {
8821 reg = 0;
8822 }
8823 else
8824 {
8825 info->callbacks->einfo
8826 (_("%P: %B: the target (%s) of a %s relocation is "
8827 "in the wrong output section (%s)\n"),
8828 input_bfd,
8829 sym_name,
8830 howto->name,
8831 name);
8832
8833 bfd_set_error (bfd_error_bad_value);
8834 ret = FALSE;
8835 continue;
8836 }
8837
8838 if (sda != NULL)
8839 {
8840 if (!is_static_defined (sda))
8841 {
8842 unresolved_reloc = TRUE;
8843 break;
8844 }
8845 addend -= SYM_VAL (sda);
8846 }
8847
8848 if (reg == 0
8849 && (r_type == R_PPC_VLE_SDA21
8850 || r_type == R_PPC_VLE_SDA21_LO))
8851 {
8852 /* Use the split20 format. */
8853 bfd_vma insn, bits12to15, bits21to31;
8854 bfd_vma value = (relocation + rel->r_offset) & 0xffff;
8855 /* Propagate sign bit, if necessary. */
8856 insn = (value & 0x8000) ? 0x70107800 : 0x70000000;
8857 bits12to15 = value & 0x700;
8858 bits21to31 = value & 0x7ff;
8859 insn |= bits12to15;
8860 insn |= bits21to31;
8861 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
8862 continue;
8863 }
8864 else if (r_type == R_PPC_EMB_SDA21
8865 || r_type == R_PPC_VLE_SDA21
8866 || r_type == R_PPC_VLE_SDA21_LO)
8867 {
8868 bfd_vma insn; /* Fill in register field. */
8869
8870 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
8871 insn = (insn & ~RA_REGISTER_MASK) | (reg << RA_REGISTER_SHIFT);
8872 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
8873 }
8874 }
8875 break;
8876
8877 case R_PPC_VLE_SDAREL_LO16A:
8878 case R_PPC_VLE_SDAREL_LO16D:
8879 case R_PPC_VLE_SDAREL_HI16A:
8880 case R_PPC_VLE_SDAREL_HI16D:
8881 case R_PPC_VLE_SDAREL_HA16A:
8882 case R_PPC_VLE_SDAREL_HA16D:
8883 {
8884 bfd_vma value;
8885 const char *name;
8886 //int reg;
8887 struct elf_link_hash_entry *sda = NULL;
8888
8889 if (sec == NULL || sec->output_section == NULL)
8890 {
8891 unresolved_reloc = TRUE;
8892 break;
8893 }
8894
8895 name = bfd_get_section_name (output_bfd, sec->output_section);
8896 if (((CONST_STRNEQ (name, ".sdata")
8897 && (name[6] == 0 || name[6] == '.'))
8898 || (CONST_STRNEQ (name, ".sbss")
8899 && (name[5] == 0 || name[5] == '.'))))
8900 {
8901 //reg = 13;
8902 sda = htab->sdata[0].sym;
8903 }
8904 else if (CONST_STRNEQ (name, ".sdata2")
8905 || CONST_STRNEQ (name, ".sbss2"))
8906 {
8907 //reg = 2;
8908 sda = htab->sdata[1].sym;
8909 }
8910 else
8911 {
8912 (*_bfd_error_handler)
8913 (_("%B: the target (%s) of a %s relocation is "
8914 "in the wrong output section (%s)"),
8915 input_bfd,
8916 sym_name,
8917 howto->name,
8918 name);
8919
8920 bfd_set_error (bfd_error_bad_value);
8921 ret = FALSE;
8922 continue;
8923 }
8924
8925 if (sda != NULL)
8926 {
8927 if (!is_static_defined (sda))
8928 {
8929 unresolved_reloc = TRUE;
8930 break;
8931 }
8932 }
8933
8934 value = sda->root.u.def.section->output_section->vma
8935 + sda->root.u.def.section->output_offset;
8936
8937 if (r_type == R_PPC_VLE_SDAREL_LO16A)
8938 {
8939 value = (value + addend) & 0xffff;
8940 ppc_elf_vle_split16 (output_bfd, contents, rel->r_offset,
8941 value, split16a_type);
8942 }
8943 else if (r_type == R_PPC_VLE_SDAREL_LO16D)
8944 {
8945 value = (value + addend) & 0xffff;
8946 ppc_elf_vle_split16 (output_bfd, contents, rel->r_offset,
8947 value, split16d_type);
8948 }
8949 else if (r_type == R_PPC_VLE_SDAREL_HI16A)
8950 {
8951 value = ((value + addend) >> 16) & 0xffff;
8952 ppc_elf_vle_split16 (output_bfd, contents, rel->r_offset,
8953 value, split16a_type);
8954 }
8955 else if (r_type == R_PPC_VLE_SDAREL_HI16D)
8956 {
8957 value = ((value + addend) >> 16) & 0xffff;
8958 ppc_elf_vle_split16 (output_bfd, contents, rel->r_offset,
8959 value, split16d_type);
8960 }
8961 else if (r_type == R_PPC_VLE_SDAREL_HA16A)
8962 {
8963 value += addend;
8964 value = (((value >> 16) + ((value & 0x8000) ? 1 : 0)) & 0xffff);
8965 ppc_elf_vle_split16 (output_bfd, contents, rel->r_offset,
8966 value, split16a_type);
8967 }
8968 else if (r_type == R_PPC_VLE_SDAREL_HA16D)
8969 {
8970 value += addend;
8971 value = (((value >> 16) + ((value & 0x8000) ? 1 : 0)) & 0xffff);
8972 ppc_elf_vle_split16 (output_bfd, contents, rel->r_offset,
8973 value, split16d_type);
8974 }
8975 }
8976 continue;
8977
8978 /* Relocate against the beginning of the section. */
8979 case R_PPC_SECTOFF:
8980 case R_PPC_SECTOFF_LO:
8981 case R_PPC_SECTOFF_HI:
8982 case R_PPC_SECTOFF_HA:
8983 if (sec == NULL || sec->output_section == NULL)
8984 {
8985 unresolved_reloc = TRUE;
8986 break;
8987 }
8988 addend -= sec->output_section->vma;
8989 break;
8990
8991 /* Negative relocations. */
8992 case R_PPC_EMB_NADDR32:
8993 case R_PPC_EMB_NADDR16:
8994 case R_PPC_EMB_NADDR16_LO:
8995 case R_PPC_EMB_NADDR16_HI:
8996 case R_PPC_EMB_NADDR16_HA:
8997 addend -= 2 * relocation;
8998 break;
8999
9000 case R_PPC_COPY:
9001 case R_PPC_GLOB_DAT:
9002 case R_PPC_JMP_SLOT:
9003 case R_PPC_RELATIVE:
9004 case R_PPC_IRELATIVE:
9005 case R_PPC_PLT32:
9006 case R_PPC_PLTREL32:
9007 case R_PPC_PLT16_LO:
9008 case R_PPC_PLT16_HI:
9009 case R_PPC_PLT16_HA:
9010 case R_PPC_ADDR30:
9011 case R_PPC_EMB_RELSEC16:
9012 case R_PPC_EMB_RELST_LO:
9013 case R_PPC_EMB_RELST_HI:
9014 case R_PPC_EMB_RELST_HA:
9015 case R_PPC_EMB_BIT_FLD:
9016 info->callbacks->einfo
9017 (_("%P: %B: relocation %s is not yet supported for symbol %s\n"),
9018 input_bfd,
9019 howto->name,
9020 sym_name);
9021
9022 bfd_set_error (bfd_error_invalid_operation);
9023 ret = FALSE;
9024 continue;
9025 }
9026
9027 /* Do any further special processing. */
9028 switch (r_type)
9029 {
9030 default:
9031 break;
9032
9033 case R_PPC_ADDR16_HA:
9034 case R_PPC_REL16_HA:
9035 case R_PPC_SECTOFF_HA:
9036 case R_PPC_TPREL16_HA:
9037 case R_PPC_DTPREL16_HA:
9038 case R_PPC_EMB_NADDR16_HA:
9039 case R_PPC_EMB_RELST_HA:
9040 /* It's just possible that this symbol is a weak symbol
9041 that's not actually defined anywhere. In that case,
9042 'sec' would be NULL, and we should leave the symbol
9043 alone (it will be set to zero elsewhere in the link). */
9044 if (sec == NULL)
9045 break;
9046 /* Fall thru */
9047
9048 case R_PPC_PLT16_HA:
9049 case R_PPC_GOT16_HA:
9050 case R_PPC_GOT_TLSGD16_HA:
9051 case R_PPC_GOT_TLSLD16_HA:
9052 case R_PPC_GOT_TPREL16_HA:
9053 case R_PPC_GOT_DTPREL16_HA:
9054 /* Add 0x10000 if sign bit in 0:15 is set.
9055 Bits 0:15 are not used. */
9056 addend += 0x8000;
9057 break;
9058
9059 case R_PPC_ADDR16:
9060 case R_PPC_ADDR16_LO:
9061 case R_PPC_GOT16:
9062 case R_PPC_GOT16_LO:
9063 case R_PPC_SDAREL16:
9064 case R_PPC_SECTOFF:
9065 case R_PPC_SECTOFF_LO:
9066 case R_PPC_DTPREL16:
9067 case R_PPC_DTPREL16_LO:
9068 case R_PPC_TPREL16:
9069 case R_PPC_TPREL16_LO:
9070 case R_PPC_GOT_TLSGD16:
9071 case R_PPC_GOT_TLSGD16_LO:
9072 case R_PPC_GOT_TLSLD16:
9073 case R_PPC_GOT_TLSLD16_LO:
9074 case R_PPC_GOT_DTPREL16:
9075 case R_PPC_GOT_DTPREL16_LO:
9076 case R_PPC_GOT_TPREL16:
9077 case R_PPC_GOT_TPREL16_LO:
9078 {
9079 /* The 32-bit ABI lacks proper relocations to deal with
9080 certain 64-bit instructions. Prevent damage to bits
9081 that make up part of the insn opcode. */
9082 unsigned int insn, mask, lobit;
9083
9084 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset);
9085 mask = 0;
9086 if (is_insn_ds_form (insn))
9087 mask = 3;
9088 else if (is_insn_dq_form (insn))
9089 mask = 15;
9090 else
9091 break;
9092 lobit = mask & (relocation + addend);
9093 if (lobit != 0)
9094 {
9095 addend -= lobit;
9096 info->callbacks->einfo
9097 (_("%P: %H: error: %s against `%s' not a multiple of %u\n"),
9098 input_bfd, input_section, rel->r_offset,
9099 howto->name, sym_name, mask + 1);
9100 bfd_set_error (bfd_error_bad_value);
9101 ret = FALSE;
9102 }
9103 addend += insn & mask;
9104 }
9105 break;
9106 }
9107
9108 #ifdef DEBUG
9109 fprintf (stderr, "\ttype = %s (%d), name = %s, symbol index = %ld, "
9110 "offset = %ld, addend = %ld\n",
9111 howto->name,
9112 (int) r_type,
9113 sym_name,
9114 r_symndx,
9115 (long) rel->r_offset,
9116 (long) addend);
9117 #endif
9118
9119 if (unresolved_reloc
9120 && !((input_section->flags & SEC_DEBUGGING) != 0
9121 && h->def_dynamic)
9122 && _bfd_elf_section_offset (output_bfd, info, input_section,
9123 rel->r_offset) != (bfd_vma) -1)
9124 {
9125 info->callbacks->einfo
9126 (_("%P: %H: unresolvable %s relocation against symbol `%s'\n"),
9127 input_bfd, input_section, rel->r_offset,
9128 howto->name,
9129 sym_name);
9130 ret = FALSE;
9131 }
9132
9133 r = _bfd_final_link_relocate (howto,
9134 input_bfd,
9135 input_section,
9136 contents,
9137 rel->r_offset,
9138 relocation,
9139 addend);
9140
9141 if (r != bfd_reloc_ok)
9142 {
9143 if (r == bfd_reloc_overflow)
9144 {
9145 if (warned)
9146 continue;
9147 if (h != NULL
9148 && h->root.type == bfd_link_hash_undefweak
9149 && howto->pc_relative)
9150 {
9151 /* Assume this is a call protected by other code that
9152 detect the symbol is undefined. If this is the case,
9153 we can safely ignore the overflow. If not, the
9154 program is hosed anyway, and a little warning isn't
9155 going to help. */
9156
9157 continue;
9158 }
9159
9160 if (! (*info->callbacks->reloc_overflow) (info,
9161 (h ? &h->root : NULL),
9162 sym_name,
9163 howto->name,
9164 rel->r_addend,
9165 input_bfd,
9166 input_section,
9167 rel->r_offset))
9168 return FALSE;
9169 }
9170 else
9171 {
9172 info->callbacks->einfo
9173 (_("%P: %H: %s reloc against `%s': error %d\n"),
9174 input_bfd, input_section, rel->r_offset,
9175 howto->name, sym_name, (int) r);
9176 ret = FALSE;
9177 }
9178 }
9179 }
9180
9181 #ifdef DEBUG
9182 fprintf (stderr, "\n");
9183 #endif
9184
9185 if (input_section->sec_info_type == SEC_INFO_TYPE_TARGET
9186 && input_section->size != input_section->rawsize
9187 && (strcmp (input_section->output_section->name, ".init") == 0
9188 || strcmp (input_section->output_section->name, ".fini") == 0))
9189 {
9190 /* Branch around the trampolines. */
9191 unsigned int insn = B + input_section->size - input_section->rawsize;
9192 bfd_put_32 (input_bfd, insn, contents + input_section->rawsize);
9193 }
9194
9195 if (htab->params->ppc476_workaround
9196 && input_section->sec_info_type == SEC_INFO_TYPE_TARGET
9197 && (!info->relocatable
9198 || (input_section->output_section->alignment_power
9199 >= htab->params->pagesize_p2)))
9200 {
9201 struct ppc_elf_relax_info *relax_info;
9202 bfd_vma start_addr, end_addr, addr;
9203 bfd_vma pagesize = (bfd_vma) 1 << htab->params->pagesize_p2;
9204
9205 relax_info = elf_section_data (input_section)->sec_info;
9206 if (relax_info->workaround_size != 0)
9207 memset (contents + input_section->size - relax_info->workaround_size,
9208 0, relax_info->workaround_size);
9209
9210 /* The idea is: Replace the last instruction on a page with a
9211 branch to a patch area. Put the insn there followed by a
9212 branch back to the next page. Complicated a little by
9213 needing to handle moved conditional branches, and by not
9214 wanting to touch data-in-text. */
9215
9216 start_addr = (input_section->output_section->vma
9217 + input_section->output_offset);
9218 end_addr = (start_addr + input_section->size
9219 - relax_info->workaround_size);
9220 for (addr = ((start_addr & -pagesize) + pagesize - 4);
9221 addr < end_addr;
9222 addr += pagesize)
9223 {
9224 bfd_vma offset = addr - start_addr;
9225 Elf_Internal_Rela *lo, *hi;
9226 bfd_boolean is_data;
9227 bfd_vma patch_off, patch_addr;
9228 unsigned int insn;
9229
9230 /* Do we have a data reloc at this offset? If so, leave
9231 the word alone. */
9232 is_data = FALSE;
9233 lo = relocs;
9234 hi = relend;
9235 rel = NULL;
9236 while (lo < hi)
9237 {
9238 rel = lo + (hi - lo) / 2;
9239 if (rel->r_offset < offset)
9240 lo = rel + 1;
9241 else if (rel->r_offset > offset + 3)
9242 hi = rel;
9243 else
9244 {
9245 switch (ELF32_R_TYPE (rel->r_info))
9246 {
9247 case R_PPC_ADDR32:
9248 case R_PPC_UADDR32:
9249 case R_PPC_REL32:
9250 case R_PPC_ADDR30:
9251 is_data = TRUE;
9252 break;
9253 default:
9254 break;
9255 }
9256 break;
9257 }
9258 }
9259 if (is_data)
9260 continue;
9261
9262 /* Some instructions can be left alone too. In this
9263 category are most insns that unconditionally change
9264 control flow, and isync. Of these, some *must* be left
9265 alone, for example, the "bcl 20, 31, label" used in pic
9266 sequences to give the address of the next insn. twui
9267 and twu apparently are not safe. */
9268 insn = bfd_get_32 (input_bfd, contents + offset);
9269 if (insn == 0
9270 || (insn & (0x3f << 26)) == (18u << 26) /* b */
9271 || ((insn & (0x3f << 26)) == (16u << 26) /* bc always */
9272 && (insn & (0x14 << 21)) == (0x14 << 21))
9273 || ((insn & (0x3f << 26)) == (19u << 26) /* blr, bctr */
9274 && (insn & (0x14 << 21)) == (0x14 << 21)
9275 && (insn & (0x1ff << 1)) == (16u << 1))
9276 || (insn & (0x3f << 26)) == (17u << 26) /* sc */
9277 || ((insn & (0x3f << 26)) == (19u << 26)
9278 && ((insn & (0x3ff << 1)) == (38u << 1) /* rfmci */
9279 || (insn & (0x3ff << 1)) == (50u << 1) /* rfi */
9280 || (insn & (0x3ff << 1)) == (51u << 1) /* rfci */
9281 || (insn & (0x3ff << 1)) == (82u << 1) /* rfsvc */
9282 || (insn & (0x3ff << 1)) == (150u << 1))) /* isync */)
9283 continue;
9284
9285 patch_addr = (start_addr + input_section->size
9286 - relax_info->workaround_size);
9287 patch_addr = (patch_addr + 15) & -16;
9288 patch_off = patch_addr - start_addr;
9289 bfd_put_32 (input_bfd, B + patch_off - offset, contents + offset);
9290
9291 if (rel != NULL
9292 && rel->r_offset >= offset
9293 && rel->r_offset < offset + 4)
9294 {
9295 /* If the insn we are patching had a reloc, adjust the
9296 reloc r_offset so that the reloc applies to the moved
9297 location. This matters for -r and --emit-relocs. */
9298 if (rel + 1 != relend)
9299 {
9300 Elf_Internal_Rela tmp = *rel;
9301
9302 /* Keep the relocs sorted by r_offset. */
9303 memmove (rel, rel + 1, (relend - (rel + 1)) * sizeof (*rel));
9304 relend[-1] = tmp;
9305 }
9306 relend[-1].r_offset += patch_off - offset;
9307 }
9308 else
9309 rel = NULL;
9310
9311 if ((insn & (0x3f << 26)) == (16u << 26) /* bc */
9312 && (insn & 2) == 0 /* relative */)
9313 {
9314 bfd_vma delta = ((insn & 0xfffc) ^ 0x8000) - 0x8000;
9315
9316 delta += offset - patch_off;
9317 if (info->relocatable && rel != NULL)
9318 delta = 0;
9319 if (!info->relocatable && rel != NULL)
9320 {
9321 enum elf_ppc_reloc_type r_type;
9322
9323 r_type = ELF32_R_TYPE (relend[-1].r_info);
9324 if (r_type == R_PPC_REL14_BRTAKEN)
9325 insn |= BRANCH_PREDICT_BIT;
9326 else if (r_type == R_PPC_REL14_BRNTAKEN)
9327 insn &= ~BRANCH_PREDICT_BIT;
9328 else
9329 BFD_ASSERT (r_type == R_PPC_REL14);
9330
9331 if ((r_type == R_PPC_REL14_BRTAKEN
9332 || r_type == R_PPC_REL14_BRNTAKEN)
9333 && delta + 0x8000 < 0x10000
9334 && (bfd_signed_vma) delta < 0)
9335 insn ^= BRANCH_PREDICT_BIT;
9336 }
9337 if (delta + 0x8000 < 0x10000)
9338 {
9339 bfd_put_32 (input_bfd,
9340 (insn & ~0xfffc) | (delta & 0xfffc),
9341 contents + patch_off);
9342 patch_off += 4;
9343 bfd_put_32 (input_bfd,
9344 B | ((offset + 4 - patch_off) & 0x3fffffc),
9345 contents + patch_off);
9346 patch_off += 4;
9347 }
9348 else
9349 {
9350 if (rel != NULL)
9351 {
9352 unsigned int r_sym = ELF32_R_SYM (relend[-1].r_info);
9353
9354 relend[-1].r_offset += 8;
9355 relend[-1].r_info = ELF32_R_INFO (r_sym, R_PPC_REL24);
9356 }
9357 bfd_put_32 (input_bfd,
9358 (insn & ~0xfffc) | 8,
9359 contents + patch_off);
9360 patch_off += 4;
9361 bfd_put_32 (input_bfd,
9362 B | ((offset + 4 - patch_off) & 0x3fffffc),
9363 contents + patch_off);
9364 patch_off += 4;
9365 bfd_put_32 (input_bfd,
9366 B | ((delta - 8) & 0x3fffffc),
9367 contents + patch_off);
9368 patch_off += 4;
9369 }
9370 }
9371 else
9372 {
9373 bfd_put_32 (input_bfd, insn, contents + patch_off);
9374 patch_off += 4;
9375 bfd_put_32 (input_bfd,
9376 B | ((offset + 4 - patch_off) & 0x3fffffc),
9377 contents + patch_off);
9378 patch_off += 4;
9379 }
9380 BFD_ASSERT (patch_off <= input_section->size);
9381 relax_info->workaround_size = input_section->size - patch_off;
9382 }
9383 }
9384
9385 return ret;
9386 }
9387 \f
9388 /* Finish up dynamic symbol handling. We set the contents of various
9389 dynamic sections here. */
9390
9391 static bfd_boolean
9392 ppc_elf_finish_dynamic_symbol (bfd *output_bfd,
9393 struct bfd_link_info *info,
9394 struct elf_link_hash_entry *h,
9395 Elf_Internal_Sym *sym)
9396 {
9397 struct ppc_elf_link_hash_table *htab;
9398 struct plt_entry *ent;
9399 bfd_boolean doneone;
9400
9401 #ifdef DEBUG
9402 fprintf (stderr, "ppc_elf_finish_dynamic_symbol called for %s",
9403 h->root.root.string);
9404 #endif
9405
9406 htab = ppc_elf_hash_table (info);
9407 BFD_ASSERT (htab->elf.dynobj != NULL);
9408
9409 doneone = FALSE;
9410 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
9411 if (ent->plt.offset != (bfd_vma) -1)
9412 {
9413 if (!doneone)
9414 {
9415 Elf_Internal_Rela rela;
9416 bfd_byte *loc;
9417 bfd_vma reloc_index;
9418
9419 if (htab->plt_type == PLT_NEW
9420 || !htab->elf.dynamic_sections_created
9421 || h->dynindx == -1)
9422 reloc_index = ent->plt.offset / 4;
9423 else
9424 {
9425 reloc_index = ((ent->plt.offset - htab->plt_initial_entry_size)
9426 / htab->plt_slot_size);
9427 if (reloc_index > PLT_NUM_SINGLE_ENTRIES
9428 && htab->plt_type == PLT_OLD)
9429 reloc_index -= (reloc_index - PLT_NUM_SINGLE_ENTRIES) / 2;
9430 }
9431
9432 /* This symbol has an entry in the procedure linkage table.
9433 Set it up. */
9434 if (htab->plt_type == PLT_VXWORKS
9435 && htab->elf.dynamic_sections_created
9436 && h->dynindx != -1)
9437 {
9438 bfd_vma got_offset;
9439 const bfd_vma *plt_entry;
9440
9441 /* The first three entries in .got.plt are reserved. */
9442 got_offset = (reloc_index + 3) * 4;
9443
9444 /* Use the right PLT. */
9445 plt_entry = info->shared ? ppc_elf_vxworks_pic_plt_entry
9446 : ppc_elf_vxworks_plt_entry;
9447
9448 /* Fill in the .plt on VxWorks. */
9449 if (info->shared)
9450 {
9451 bfd_put_32 (output_bfd,
9452 plt_entry[0] | PPC_HA (got_offset),
9453 htab->plt->contents + ent->plt.offset + 0);
9454 bfd_put_32 (output_bfd,
9455 plt_entry[1] | PPC_LO (got_offset),
9456 htab->plt->contents + ent->plt.offset + 4);
9457 }
9458 else
9459 {
9460 bfd_vma got_loc = got_offset + SYM_VAL (htab->elf.hgot);
9461
9462 bfd_put_32 (output_bfd,
9463 plt_entry[0] | PPC_HA (got_loc),
9464 htab->plt->contents + ent->plt.offset + 0);
9465 bfd_put_32 (output_bfd,
9466 plt_entry[1] | PPC_LO (got_loc),
9467 htab->plt->contents + ent->plt.offset + 4);
9468 }
9469
9470 bfd_put_32 (output_bfd, plt_entry[2],
9471 htab->plt->contents + ent->plt.offset + 8);
9472 bfd_put_32 (output_bfd, plt_entry[3],
9473 htab->plt->contents + ent->plt.offset + 12);
9474
9475 /* This instruction is an immediate load. The value loaded is
9476 the byte offset of the R_PPC_JMP_SLOT relocation from the
9477 start of the .rela.plt section. The value is stored in the
9478 low-order 16 bits of the load instruction. */
9479 /* NOTE: It appears that this is now an index rather than a
9480 prescaled offset. */
9481 bfd_put_32 (output_bfd,
9482 plt_entry[4] | reloc_index,
9483 htab->plt->contents + ent->plt.offset + 16);
9484 /* This instruction is a PC-relative branch whose target is
9485 the start of the PLT section. The address of this branch
9486 instruction is 20 bytes beyond the start of this PLT entry.
9487 The address is encoded in bits 6-29, inclusive. The value
9488 stored is right-shifted by two bits, permitting a 26-bit
9489 offset. */
9490 bfd_put_32 (output_bfd,
9491 (plt_entry[5]
9492 | (-(ent->plt.offset + 20) & 0x03fffffc)),
9493 htab->plt->contents + ent->plt.offset + 20);
9494 bfd_put_32 (output_bfd, plt_entry[6],
9495 htab->plt->contents + ent->plt.offset + 24);
9496 bfd_put_32 (output_bfd, plt_entry[7],
9497 htab->plt->contents + ent->plt.offset + 28);
9498
9499 /* Fill in the GOT entry corresponding to this PLT slot with
9500 the address immediately after the "bctr" instruction
9501 in this PLT entry. */
9502 bfd_put_32 (output_bfd, (htab->plt->output_section->vma
9503 + htab->plt->output_offset
9504 + ent->plt.offset + 16),
9505 htab->sgotplt->contents + got_offset);
9506
9507 if (!info->shared)
9508 {
9509 /* Fill in a couple of entries in .rela.plt.unloaded. */
9510 loc = htab->srelplt2->contents
9511 + ((VXWORKS_PLTRESOLVE_RELOCS + reloc_index
9512 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS)
9513 * sizeof (Elf32_External_Rela));
9514
9515 /* Provide the @ha relocation for the first instruction. */
9516 rela.r_offset = (htab->plt->output_section->vma
9517 + htab->plt->output_offset
9518 + ent->plt.offset + 2);
9519 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
9520 R_PPC_ADDR16_HA);
9521 rela.r_addend = got_offset;
9522 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
9523 loc += sizeof (Elf32_External_Rela);
9524
9525 /* Provide the @l relocation for the second instruction. */
9526 rela.r_offset = (htab->plt->output_section->vma
9527 + htab->plt->output_offset
9528 + ent->plt.offset + 6);
9529 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
9530 R_PPC_ADDR16_LO);
9531 rela.r_addend = got_offset;
9532 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
9533 loc += sizeof (Elf32_External_Rela);
9534
9535 /* Provide a relocation for the GOT entry corresponding to this
9536 PLT slot. Point it at the middle of the .plt entry. */
9537 rela.r_offset = (htab->sgotplt->output_section->vma
9538 + htab->sgotplt->output_offset
9539 + got_offset);
9540 rela.r_info = ELF32_R_INFO (htab->elf.hplt->indx,
9541 R_PPC_ADDR32);
9542 rela.r_addend = ent->plt.offset + 16;
9543 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
9544 }
9545
9546 /* VxWorks uses non-standard semantics for R_PPC_JMP_SLOT.
9547 In particular, the offset for the relocation is not the
9548 address of the PLT entry for this function, as specified
9549 by the ABI. Instead, the offset is set to the address of
9550 the GOT slot for this function. See EABI 4.4.4.1. */
9551 rela.r_offset = (htab->sgotplt->output_section->vma
9552 + htab->sgotplt->output_offset
9553 + got_offset);
9554
9555 }
9556 else
9557 {
9558 asection *splt = htab->plt;
9559 if (!htab->elf.dynamic_sections_created
9560 || h->dynindx == -1)
9561 splt = htab->iplt;
9562
9563 rela.r_offset = (splt->output_section->vma
9564 + splt->output_offset
9565 + ent->plt.offset);
9566 if (htab->plt_type == PLT_OLD
9567 || !htab->elf.dynamic_sections_created
9568 || h->dynindx == -1)
9569 {
9570 /* We don't need to fill in the .plt. The ppc dynamic
9571 linker will fill it in. */
9572 }
9573 else
9574 {
9575 bfd_vma val = (htab->glink_pltresolve + ent->plt.offset
9576 + htab->glink->output_section->vma
9577 + htab->glink->output_offset);
9578 bfd_put_32 (output_bfd, val,
9579 splt->contents + ent->plt.offset);
9580 }
9581 }
9582
9583 /* Fill in the entry in the .rela.plt section. */
9584 rela.r_addend = 0;
9585 if (!htab->elf.dynamic_sections_created
9586 || h->dynindx == -1)
9587 {
9588 BFD_ASSERT (h->type == STT_GNU_IFUNC
9589 && h->def_regular
9590 && (h->root.type == bfd_link_hash_defined
9591 || h->root.type == bfd_link_hash_defweak));
9592 rela.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
9593 rela.r_addend = SYM_VAL (h);
9594 }
9595 else
9596 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_JMP_SLOT);
9597
9598 if (!htab->elf.dynamic_sections_created
9599 || h->dynindx == -1)
9600 loc = (htab->reliplt->contents
9601 + (htab->reliplt->reloc_count++
9602 * sizeof (Elf32_External_Rela)));
9603 else
9604 loc = (htab->relplt->contents
9605 + reloc_index * sizeof (Elf32_External_Rela));
9606 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
9607
9608 if (!h->def_regular)
9609 {
9610 /* Mark the symbol as undefined, rather than as
9611 defined in the .plt section. Leave the value if
9612 there were any relocations where pointer equality
9613 matters (this is a clue for the dynamic linker, to
9614 make function pointer comparisons work between an
9615 application and shared library), otherwise set it
9616 to zero. */
9617 sym->st_shndx = SHN_UNDEF;
9618 if (!h->pointer_equality_needed)
9619 sym->st_value = 0;
9620 else if (!h->ref_regular_nonweak)
9621 {
9622 /* This breaks function pointer comparisons, but
9623 that is better than breaking tests for a NULL
9624 function pointer. */
9625 sym->st_value = 0;
9626 }
9627 }
9628 else if (h->type == STT_GNU_IFUNC
9629 && !info->shared)
9630 {
9631 /* Set the value of ifunc symbols in a non-pie
9632 executable to the glink entry. This is to avoid
9633 text relocations. We can't do this for ifunc in
9634 allocate_dynrelocs, as we do for normal dynamic
9635 function symbols with plt entries, because we need
9636 to keep the original value around for the ifunc
9637 relocation. */
9638 sym->st_shndx = (_bfd_elf_section_from_bfd_section
9639 (output_bfd, htab->glink->output_section));
9640 sym->st_value = (ent->glink_offset
9641 + htab->glink->output_offset
9642 + htab->glink->output_section->vma);
9643 }
9644 doneone = TRUE;
9645 }
9646
9647 if (htab->plt_type == PLT_NEW
9648 || !htab->elf.dynamic_sections_created
9649 || h->dynindx == -1)
9650 {
9651 unsigned char *p;
9652 asection *splt = htab->plt;
9653 if (!htab->elf.dynamic_sections_created
9654 || h->dynindx == -1)
9655 splt = htab->iplt;
9656
9657 p = (unsigned char *) htab->glink->contents + ent->glink_offset;
9658
9659 if (h == htab->tls_get_addr && !htab->params->no_tls_get_addr_opt)
9660 {
9661 bfd_put_32 (output_bfd, LWZ_11_3, p);
9662 p += 4;
9663 bfd_put_32 (output_bfd, LWZ_12_3 + 4, p);
9664 p += 4;
9665 bfd_put_32 (output_bfd, MR_0_3, p);
9666 p += 4;
9667 bfd_put_32 (output_bfd, CMPWI_11_0, p);
9668 p += 4;
9669 bfd_put_32 (output_bfd, ADD_3_12_2, p);
9670 p += 4;
9671 bfd_put_32 (output_bfd, BEQLR, p);
9672 p += 4;
9673 bfd_put_32 (output_bfd, MR_3_0, p);
9674 p += 4;
9675 bfd_put_32 (output_bfd, NOP, p);
9676 p += 4;
9677 }
9678
9679 write_glink_stub (ent, splt, p, info);
9680
9681 if (!info->shared)
9682 /* We only need one non-PIC glink stub. */
9683 break;
9684 }
9685 else
9686 break;
9687 }
9688
9689 if (h->needs_copy)
9690 {
9691 asection *s;
9692 Elf_Internal_Rela rela;
9693 bfd_byte *loc;
9694
9695 /* This symbols needs a copy reloc. Set it up. */
9696
9697 #ifdef DEBUG
9698 fprintf (stderr, ", copy");
9699 #endif
9700
9701 BFD_ASSERT (h->dynindx != -1);
9702
9703 if (ppc_elf_hash_entry (h)->has_sda_refs)
9704 s = htab->relsbss;
9705 else
9706 s = htab->relbss;
9707 BFD_ASSERT (s != NULL);
9708
9709 rela.r_offset = SYM_VAL (h);
9710 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_COPY);
9711 rela.r_addend = 0;
9712 loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
9713 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
9714 }
9715
9716 #ifdef DEBUG
9717 fprintf (stderr, "\n");
9718 #endif
9719
9720 return TRUE;
9721 }
9722 \f
9723 static enum elf_reloc_type_class
9724 ppc_elf_reloc_type_class (const struct bfd_link_info *info,
9725 const asection *rel_sec,
9726 const Elf_Internal_Rela *rela)
9727 {
9728 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
9729
9730 if (rel_sec == htab->reliplt)
9731 return reloc_class_ifunc;
9732
9733 switch (ELF32_R_TYPE (rela->r_info))
9734 {
9735 case R_PPC_RELATIVE:
9736 return reloc_class_relative;
9737 case R_PPC_JMP_SLOT:
9738 return reloc_class_plt;
9739 case R_PPC_COPY:
9740 return reloc_class_copy;
9741 default:
9742 return reloc_class_normal;
9743 }
9744 }
9745 \f
9746 /* Finish up the dynamic sections. */
9747
9748 static bfd_boolean
9749 ppc_elf_finish_dynamic_sections (bfd *output_bfd,
9750 struct bfd_link_info *info)
9751 {
9752 asection *sdyn;
9753 asection *splt;
9754 struct ppc_elf_link_hash_table *htab;
9755 bfd_vma got;
9756 bfd *dynobj;
9757 bfd_boolean ret = TRUE;
9758
9759 #ifdef DEBUG
9760 fprintf (stderr, "ppc_elf_finish_dynamic_sections called\n");
9761 #endif
9762
9763 htab = ppc_elf_hash_table (info);
9764 dynobj = elf_hash_table (info)->dynobj;
9765 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
9766 if (htab->is_vxworks)
9767 splt = bfd_get_linker_section (dynobj, ".plt");
9768 else
9769 splt = NULL;
9770
9771 got = 0;
9772 if (htab->elf.hgot != NULL)
9773 got = SYM_VAL (htab->elf.hgot);
9774
9775 if (htab->elf.dynamic_sections_created)
9776 {
9777 Elf32_External_Dyn *dyncon, *dynconend;
9778
9779 BFD_ASSERT (htab->plt != NULL && sdyn != NULL);
9780
9781 dyncon = (Elf32_External_Dyn *) sdyn->contents;
9782 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
9783 for (; dyncon < dynconend; dyncon++)
9784 {
9785 Elf_Internal_Dyn dyn;
9786 asection *s;
9787
9788 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
9789
9790 switch (dyn.d_tag)
9791 {
9792 case DT_PLTGOT:
9793 if (htab->is_vxworks)
9794 s = htab->sgotplt;
9795 else
9796 s = htab->plt;
9797 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
9798 break;
9799
9800 case DT_PLTRELSZ:
9801 dyn.d_un.d_val = htab->relplt->size;
9802 break;
9803
9804 case DT_JMPREL:
9805 s = htab->relplt;
9806 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
9807 break;
9808
9809 case DT_PPC_GOT:
9810 dyn.d_un.d_ptr = got;
9811 break;
9812
9813 case DT_RELASZ:
9814 if (htab->is_vxworks)
9815 {
9816 if (htab->relplt)
9817 dyn.d_un.d_ptr -= htab->relplt->size;
9818 break;
9819 }
9820 continue;
9821
9822 default:
9823 if (htab->is_vxworks
9824 && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn))
9825 break;
9826 continue;
9827 }
9828
9829 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
9830 }
9831 }
9832
9833 if (htab->got != NULL)
9834 {
9835 if (htab->elf.hgot->root.u.def.section == htab->got
9836 || htab->elf.hgot->root.u.def.section == htab->sgotplt)
9837 {
9838 unsigned char *p = htab->elf.hgot->root.u.def.section->contents;
9839
9840 p += htab->elf.hgot->root.u.def.value;
9841 if (htab->plt_type == PLT_OLD)
9842 {
9843 /* Add a blrl instruction at _GLOBAL_OFFSET_TABLE_-4
9844 so that a function can easily find the address of
9845 _GLOBAL_OFFSET_TABLE_. */
9846 BFD_ASSERT (htab->elf.hgot->root.u.def.value - 4
9847 < htab->elf.hgot->root.u.def.section->size);
9848 bfd_put_32 (output_bfd, 0x4e800021, p - 4);
9849 }
9850
9851 if (sdyn != NULL)
9852 {
9853 bfd_vma val = sdyn->output_section->vma + sdyn->output_offset;
9854 BFD_ASSERT (htab->elf.hgot->root.u.def.value
9855 < htab->elf.hgot->root.u.def.section->size);
9856 bfd_put_32 (output_bfd, val, p);
9857 }
9858 }
9859 else
9860 {
9861 info->callbacks->einfo (_("%P: %s not defined in linker created %s\n"),
9862 htab->elf.hgot->root.root.string,
9863 (htab->sgotplt != NULL
9864 ? htab->sgotplt->name : htab->got->name));
9865 bfd_set_error (bfd_error_bad_value);
9866 ret = FALSE;
9867 }
9868
9869 elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 4;
9870 }
9871
9872 /* Fill in the first entry in the VxWorks procedure linkage table. */
9873 if (splt && splt->size > 0)
9874 {
9875 /* Use the right PLT. */
9876 const bfd_vma *plt_entry = (info->shared
9877 ? ppc_elf_vxworks_pic_plt0_entry
9878 : ppc_elf_vxworks_plt0_entry);
9879
9880 if (!info->shared)
9881 {
9882 bfd_vma got_value = SYM_VAL (htab->elf.hgot);
9883
9884 bfd_put_32 (output_bfd, plt_entry[0] | PPC_HA (got_value),
9885 splt->contents + 0);
9886 bfd_put_32 (output_bfd, plt_entry[1] | PPC_LO (got_value),
9887 splt->contents + 4);
9888 }
9889 else
9890 {
9891 bfd_put_32 (output_bfd, plt_entry[0], splt->contents + 0);
9892 bfd_put_32 (output_bfd, plt_entry[1], splt->contents + 4);
9893 }
9894 bfd_put_32 (output_bfd, plt_entry[2], splt->contents + 8);
9895 bfd_put_32 (output_bfd, plt_entry[3], splt->contents + 12);
9896 bfd_put_32 (output_bfd, plt_entry[4], splt->contents + 16);
9897 bfd_put_32 (output_bfd, plt_entry[5], splt->contents + 20);
9898 bfd_put_32 (output_bfd, plt_entry[6], splt->contents + 24);
9899 bfd_put_32 (output_bfd, plt_entry[7], splt->contents + 28);
9900
9901 if (! info->shared)
9902 {
9903 Elf_Internal_Rela rela;
9904 bfd_byte *loc;
9905
9906 loc = htab->srelplt2->contents;
9907
9908 /* Output the @ha relocation for the first instruction. */
9909 rela.r_offset = (htab->plt->output_section->vma
9910 + htab->plt->output_offset
9911 + 2);
9912 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
9913 rela.r_addend = 0;
9914 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
9915 loc += sizeof (Elf32_External_Rela);
9916
9917 /* Output the @l relocation for the second instruction. */
9918 rela.r_offset = (htab->plt->output_section->vma
9919 + htab->plt->output_offset
9920 + 6);
9921 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
9922 rela.r_addend = 0;
9923 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
9924 loc += sizeof (Elf32_External_Rela);
9925
9926 /* Fix up the remaining relocations. They may have the wrong
9927 symbol index for _G_O_T_ or _P_L_T_ depending on the order
9928 in which symbols were output. */
9929 while (loc < htab->srelplt2->contents + htab->srelplt2->size)
9930 {
9931 Elf_Internal_Rela rel;
9932
9933 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
9934 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
9935 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
9936 loc += sizeof (Elf32_External_Rela);
9937
9938 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
9939 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
9940 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
9941 loc += sizeof (Elf32_External_Rela);
9942
9943 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
9944 rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_PPC_ADDR32);
9945 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
9946 loc += sizeof (Elf32_External_Rela);
9947 }
9948 }
9949 }
9950
9951 if (htab->glink != NULL
9952 && htab->glink->contents != NULL
9953 && htab->elf.dynamic_sections_created)
9954 {
9955 unsigned char *p;
9956 unsigned char *endp;
9957 bfd_vma res0;
9958 unsigned int i;
9959
9960 /*
9961 * PIC glink code is the following:
9962 *
9963 * # ith PLT code stub.
9964 * addis 11,30,(plt+(i-1)*4-got)@ha
9965 * lwz 11,(plt+(i-1)*4-got)@l(11)
9966 * mtctr 11
9967 * bctr
9968 *
9969 * # A table of branches, one for each plt entry.
9970 * # The idea is that the plt call stub loads ctr and r11 with these
9971 * # addresses, so (r11 - res_0) gives the plt index * 4.
9972 * res_0: b PLTresolve
9973 * res_1: b PLTresolve
9974 * .
9975 * # Some number of entries towards the end can be nops
9976 * res_n_m3: nop
9977 * res_n_m2: nop
9978 * res_n_m1:
9979 *
9980 * PLTresolve:
9981 * addis 11,11,(1f-res_0)@ha
9982 * mflr 0
9983 * bcl 20,31,1f
9984 * 1: addi 11,11,(1b-res_0)@l
9985 * mflr 12
9986 * mtlr 0
9987 * sub 11,11,12 # r11 = index * 4
9988 * addis 12,12,(got+4-1b)@ha
9989 * lwz 0,(got+4-1b)@l(12) # got[1] address of dl_runtime_resolve
9990 * lwz 12,(got+8-1b)@l(12) # got[2] contains the map address
9991 * mtctr 0
9992 * add 0,11,11
9993 * add 11,0,11 # r11 = index * 12 = reloc offset.
9994 * bctr
9995 */
9996 static const unsigned int pic_plt_resolve[] =
9997 {
9998 ADDIS_11_11,
9999 MFLR_0,
10000 BCL_20_31,
10001 ADDI_11_11,
10002 MFLR_12,
10003 MTLR_0,
10004 SUB_11_11_12,
10005 ADDIS_12_12,
10006 LWZ_0_12,
10007 LWZ_12_12,
10008 MTCTR_0,
10009 ADD_0_11_11,
10010 ADD_11_0_11,
10011 BCTR,
10012 NOP,
10013 NOP
10014 };
10015
10016 /*
10017 * Non-PIC glink code is a little simpler.
10018 *
10019 * # ith PLT code stub.
10020 * lis 11,(plt+(i-1)*4)@ha
10021 * lwz 11,(plt+(i-1)*4)@l(11)
10022 * mtctr 11
10023 * bctr
10024 *
10025 * The branch table is the same, then comes
10026 *
10027 * PLTresolve:
10028 * lis 12,(got+4)@ha
10029 * addis 11,11,(-res_0)@ha
10030 * lwz 0,(got+4)@l(12) # got[1] address of dl_runtime_resolve
10031 * addi 11,11,(-res_0)@l # r11 = index * 4
10032 * mtctr 0
10033 * add 0,11,11
10034 * lwz 12,(got+8)@l(12) # got[2] contains the map address
10035 * add 11,0,11 # r11 = index * 12 = reloc offset.
10036 * bctr
10037 */
10038 static const unsigned int plt_resolve[] =
10039 {
10040 LIS_12,
10041 ADDIS_11_11,
10042 LWZ_0_12,
10043 ADDI_11_11,
10044 MTCTR_0,
10045 ADD_0_11_11,
10046 LWZ_12_12,
10047 ADD_11_0_11,
10048 BCTR,
10049 NOP,
10050 NOP,
10051 NOP,
10052 NOP,
10053 NOP,
10054 NOP,
10055 NOP
10056 };
10057
10058 if (ARRAY_SIZE (pic_plt_resolve) != GLINK_PLTRESOLVE / 4)
10059 abort ();
10060 if (ARRAY_SIZE (plt_resolve) != GLINK_PLTRESOLVE / 4)
10061 abort ();
10062
10063 /* Build the branch table, one for each plt entry (less one),
10064 and perhaps some padding. */
10065 p = htab->glink->contents;
10066 p += htab->glink_pltresolve;
10067 endp = htab->glink->contents;
10068 endp += htab->glink->size - GLINK_PLTRESOLVE;
10069 while (p < endp - 8 * 4)
10070 {
10071 bfd_put_32 (output_bfd, B + endp - p, p);
10072 p += 4;
10073 }
10074 while (p < endp)
10075 {
10076 bfd_put_32 (output_bfd, NOP, p);
10077 p += 4;
10078 }
10079
10080 res0 = (htab->glink_pltresolve
10081 + htab->glink->output_section->vma
10082 + htab->glink->output_offset);
10083
10084 /* Last comes the PLTresolve stub. */
10085 if (info->shared)
10086 {
10087 bfd_vma bcl;
10088
10089 for (i = 0; i < ARRAY_SIZE (pic_plt_resolve); i++)
10090 {
10091 bfd_put_32 (output_bfd, pic_plt_resolve[i], p);
10092 p += 4;
10093 }
10094 p -= 4 * ARRAY_SIZE (pic_plt_resolve);
10095
10096 bcl = (htab->glink->size - GLINK_PLTRESOLVE + 3*4
10097 + htab->glink->output_section->vma
10098 + htab->glink->output_offset);
10099
10100 bfd_put_32 (output_bfd,
10101 ADDIS_11_11 + PPC_HA (bcl - res0), p + 0*4);
10102 bfd_put_32 (output_bfd,
10103 ADDI_11_11 + PPC_LO (bcl - res0), p + 3*4);
10104 bfd_put_32 (output_bfd,
10105 ADDIS_12_12 + PPC_HA (got + 4 - bcl), p + 7*4);
10106 if (PPC_HA (got + 4 - bcl) == PPC_HA (got + 8 - bcl))
10107 {
10108 bfd_put_32 (output_bfd,
10109 LWZ_0_12 + PPC_LO (got + 4 - bcl), p + 8*4);
10110 bfd_put_32 (output_bfd,
10111 LWZ_12_12 + PPC_LO (got + 8 - bcl), p + 9*4);
10112 }
10113 else
10114 {
10115 bfd_put_32 (output_bfd,
10116 LWZU_0_12 + PPC_LO (got + 4 - bcl), p + 8*4);
10117 bfd_put_32 (output_bfd,
10118 LWZ_12_12 + 4, p + 9*4);
10119 }
10120 }
10121 else
10122 {
10123 for (i = 0; i < ARRAY_SIZE (plt_resolve); i++)
10124 {
10125 bfd_put_32 (output_bfd, plt_resolve[i], p);
10126 p += 4;
10127 }
10128 p -= 4 * ARRAY_SIZE (plt_resolve);
10129
10130 bfd_put_32 (output_bfd,
10131 LIS_12 + PPC_HA (got + 4), p + 0*4);
10132 bfd_put_32 (output_bfd,
10133 ADDIS_11_11 + PPC_HA (-res0), p + 1*4);
10134 bfd_put_32 (output_bfd,
10135 ADDI_11_11 + PPC_LO (-res0), p + 3*4);
10136 if (PPC_HA (got + 4) == PPC_HA (got + 8))
10137 {
10138 bfd_put_32 (output_bfd,
10139 LWZ_0_12 + PPC_LO (got + 4), p + 2*4);
10140 bfd_put_32 (output_bfd,
10141 LWZ_12_12 + PPC_LO (got + 8), p + 6*4);
10142 }
10143 else
10144 {
10145 bfd_put_32 (output_bfd,
10146 LWZU_0_12 + PPC_LO (got + 4), p + 2*4);
10147 bfd_put_32 (output_bfd,
10148 LWZ_12_12 + 4, p + 6*4);
10149 }
10150 }
10151 }
10152
10153 if (htab->glink_eh_frame != NULL
10154 && htab->glink_eh_frame->contents != NULL)
10155 {
10156 unsigned char *p = htab->glink_eh_frame->contents;
10157 bfd_vma val;
10158
10159 p += sizeof (glink_eh_frame_cie);
10160 /* FDE length. */
10161 p += 4;
10162 /* CIE pointer. */
10163 p += 4;
10164 /* Offset to .glink. */
10165 val = (htab->glink->output_section->vma
10166 + htab->glink->output_offset);
10167 val -= (htab->glink_eh_frame->output_section->vma
10168 + htab->glink_eh_frame->output_offset);
10169 val -= p - htab->glink_eh_frame->contents;
10170 bfd_put_32 (htab->elf.dynobj, val, p);
10171
10172 if (htab->glink_eh_frame->sec_info_type == SEC_INFO_TYPE_EH_FRAME
10173 && !_bfd_elf_write_section_eh_frame (output_bfd, info,
10174 htab->glink_eh_frame,
10175 htab->glink_eh_frame->contents))
10176 return FALSE;
10177 }
10178
10179 return ret;
10180 }
10181 \f
10182 #define TARGET_LITTLE_SYM bfd_elf32_powerpcle_vec
10183 #define TARGET_LITTLE_NAME "elf32-powerpcle"
10184 #define TARGET_BIG_SYM bfd_elf32_powerpc_vec
10185 #define TARGET_BIG_NAME "elf32-powerpc"
10186 #define ELF_ARCH bfd_arch_powerpc
10187 #define ELF_TARGET_ID PPC32_ELF_DATA
10188 #define ELF_MACHINE_CODE EM_PPC
10189 #ifdef __QNXTARGET__
10190 #define ELF_MAXPAGESIZE 0x1000
10191 #else
10192 #define ELF_MAXPAGESIZE 0x10000
10193 #endif
10194 #define ELF_MINPAGESIZE 0x1000
10195 #define ELF_COMMONPAGESIZE 0x1000
10196 #define elf_info_to_howto ppc_elf_info_to_howto
10197
10198 #ifdef EM_CYGNUS_POWERPC
10199 #define ELF_MACHINE_ALT1 EM_CYGNUS_POWERPC
10200 #endif
10201
10202 #ifdef EM_PPC_OLD
10203 #define ELF_MACHINE_ALT2 EM_PPC_OLD
10204 #endif
10205
10206 #define elf_backend_plt_not_loaded 1
10207 #define elf_backend_can_gc_sections 1
10208 #define elf_backend_can_refcount 1
10209 #define elf_backend_rela_normal 1
10210 #define elf_backend_caches_rawsize 1
10211
10212 #define bfd_elf32_mkobject ppc_elf_mkobject
10213 #define bfd_elf32_bfd_merge_private_bfd_data ppc_elf_merge_private_bfd_data
10214 #define bfd_elf32_bfd_relax_section ppc_elf_relax_section
10215 #define bfd_elf32_bfd_reloc_type_lookup ppc_elf_reloc_type_lookup
10216 #define bfd_elf32_bfd_reloc_name_lookup ppc_elf_reloc_name_lookup
10217 #define bfd_elf32_bfd_set_private_flags ppc_elf_set_private_flags
10218 #define bfd_elf32_bfd_link_hash_table_create ppc_elf_link_hash_table_create
10219 #define bfd_elf32_get_synthetic_symtab ppc_elf_get_synthetic_symtab
10220
10221 #define elf_backend_object_p ppc_elf_object_p
10222 #define elf_backend_gc_mark_hook ppc_elf_gc_mark_hook
10223 #define elf_backend_gc_sweep_hook ppc_elf_gc_sweep_hook
10224 #define elf_backend_section_from_shdr ppc_elf_section_from_shdr
10225 #define elf_backend_relocate_section ppc_elf_relocate_section
10226 #define elf_backend_create_dynamic_sections ppc_elf_create_dynamic_sections
10227 #define elf_backend_check_relocs ppc_elf_check_relocs
10228 #define elf_backend_copy_indirect_symbol ppc_elf_copy_indirect_symbol
10229 #define elf_backend_adjust_dynamic_symbol ppc_elf_adjust_dynamic_symbol
10230 #define elf_backend_add_symbol_hook ppc_elf_add_symbol_hook
10231 #define elf_backend_size_dynamic_sections ppc_elf_size_dynamic_sections
10232 #define elf_backend_hash_symbol ppc_elf_hash_symbol
10233 #define elf_backend_finish_dynamic_symbol ppc_elf_finish_dynamic_symbol
10234 #define elf_backend_finish_dynamic_sections ppc_elf_finish_dynamic_sections
10235 #define elf_backend_fake_sections ppc_elf_fake_sections
10236 #define elf_backend_additional_program_headers ppc_elf_additional_program_headers
10237 #define elf_backend_modify_segment_map ppc_elf_modify_segment_map
10238 #define elf_backend_grok_prstatus ppc_elf_grok_prstatus
10239 #define elf_backend_grok_psinfo ppc_elf_grok_psinfo
10240 #define elf_backend_write_core_note ppc_elf_write_core_note
10241 #define elf_backend_reloc_type_class ppc_elf_reloc_type_class
10242 #define elf_backend_begin_write_processing ppc_elf_begin_write_processing
10243 #define elf_backend_final_write_processing ppc_elf_final_write_processing
10244 #define elf_backend_write_section ppc_elf_write_section
10245 #define elf_backend_get_sec_type_attr ppc_elf_get_sec_type_attr
10246 #define elf_backend_plt_sym_val ppc_elf_plt_sym_val
10247 #define elf_backend_action_discarded ppc_elf_action_discarded
10248 #define elf_backend_init_index_section _bfd_elf_init_1_index_section
10249 #define elf_backend_lookup_section_flags_hook ppc_elf_lookup_section_flags
10250 #define elf_backend_section_processing ppc_elf_section_processing
10251
10252 #include "elf32-target.h"
10253
10254 /* FreeBSD Target */
10255
10256 #undef TARGET_LITTLE_SYM
10257 #undef TARGET_LITTLE_NAME
10258
10259 #undef TARGET_BIG_SYM
10260 #define TARGET_BIG_SYM bfd_elf32_powerpc_freebsd_vec
10261 #undef TARGET_BIG_NAME
10262 #define TARGET_BIG_NAME "elf32-powerpc-freebsd"
10263
10264 #undef ELF_OSABI
10265 #define ELF_OSABI ELFOSABI_FREEBSD
10266
10267 #undef elf32_bed
10268 #define elf32_bed elf32_powerpc_fbsd_bed
10269
10270 #include "elf32-target.h"
10271
10272 /* VxWorks Target */
10273
10274 #undef TARGET_LITTLE_SYM
10275 #undef TARGET_LITTLE_NAME
10276
10277 #undef TARGET_BIG_SYM
10278 #define TARGET_BIG_SYM bfd_elf32_powerpc_vxworks_vec
10279 #undef TARGET_BIG_NAME
10280 #define TARGET_BIG_NAME "elf32-powerpc-vxworks"
10281
10282 #undef ELF_OSABI
10283
10284 /* VxWorks uses the elf default section flags for .plt. */
10285 static const struct bfd_elf_special_section *
10286 ppc_elf_vxworks_get_sec_type_attr (bfd *abfd ATTRIBUTE_UNUSED, asection *sec)
10287 {
10288 if (sec->name == NULL)
10289 return NULL;
10290
10291 if (strcmp (sec->name, ".plt") == 0)
10292 return _bfd_elf_get_sec_type_attr (abfd, sec);
10293
10294 return ppc_elf_get_sec_type_attr (abfd, sec);
10295 }
10296
10297 /* Like ppc_elf_link_hash_table_create, but overrides
10298 appropriately for VxWorks. */
10299 static struct bfd_link_hash_table *
10300 ppc_elf_vxworks_link_hash_table_create (bfd *abfd)
10301 {
10302 struct bfd_link_hash_table *ret;
10303
10304 ret = ppc_elf_link_hash_table_create (abfd);
10305 if (ret)
10306 {
10307 struct ppc_elf_link_hash_table *htab
10308 = (struct ppc_elf_link_hash_table *)ret;
10309 htab->is_vxworks = 1;
10310 htab->plt_type = PLT_VXWORKS;
10311 htab->plt_entry_size = VXWORKS_PLT_ENTRY_SIZE;
10312 htab->plt_slot_size = VXWORKS_PLT_ENTRY_SIZE;
10313 htab->plt_initial_entry_size = VXWORKS_PLT_INITIAL_ENTRY_SIZE;
10314 }
10315 return ret;
10316 }
10317
10318 /* Tweak magic VxWorks symbols as they are loaded. */
10319 static bfd_boolean
10320 ppc_elf_vxworks_add_symbol_hook (bfd *abfd,
10321 struct bfd_link_info *info,
10322 Elf_Internal_Sym *sym,
10323 const char **namep ATTRIBUTE_UNUSED,
10324 flagword *flagsp ATTRIBUTE_UNUSED,
10325 asection **secp,
10326 bfd_vma *valp)
10327 {
10328 if (!elf_vxworks_add_symbol_hook(abfd, info, sym,namep, flagsp, secp,
10329 valp))
10330 return FALSE;
10331
10332 return ppc_elf_add_symbol_hook(abfd, info, sym,namep, flagsp, secp, valp);
10333 }
10334
10335 static void
10336 ppc_elf_vxworks_final_write_processing (bfd *abfd, bfd_boolean linker)
10337 {
10338 ppc_elf_final_write_processing(abfd, linker);
10339 elf_vxworks_final_write_processing(abfd, linker);
10340 }
10341
10342 /* On VxWorks, we emit relocations against _PROCEDURE_LINKAGE_TABLE_, so
10343 define it. */
10344 #undef elf_backend_want_plt_sym
10345 #define elf_backend_want_plt_sym 1
10346 #undef elf_backend_want_got_plt
10347 #define elf_backend_want_got_plt 1
10348 #undef elf_backend_got_symbol_offset
10349 #define elf_backend_got_symbol_offset 0
10350 #undef elf_backend_plt_not_loaded
10351 #define elf_backend_plt_not_loaded 0
10352 #undef elf_backend_plt_readonly
10353 #define elf_backend_plt_readonly 1
10354 #undef elf_backend_got_header_size
10355 #define elf_backend_got_header_size 12
10356
10357 #undef bfd_elf32_get_synthetic_symtab
10358
10359 #undef bfd_elf32_bfd_link_hash_table_create
10360 #define bfd_elf32_bfd_link_hash_table_create \
10361 ppc_elf_vxworks_link_hash_table_create
10362 #undef elf_backend_add_symbol_hook
10363 #define elf_backend_add_symbol_hook \
10364 ppc_elf_vxworks_add_symbol_hook
10365 #undef elf_backend_link_output_symbol_hook
10366 #define elf_backend_link_output_symbol_hook \
10367 elf_vxworks_link_output_symbol_hook
10368 #undef elf_backend_final_write_processing
10369 #define elf_backend_final_write_processing \
10370 ppc_elf_vxworks_final_write_processing
10371 #undef elf_backend_get_sec_type_attr
10372 #define elf_backend_get_sec_type_attr \
10373 ppc_elf_vxworks_get_sec_type_attr
10374 #undef elf_backend_emit_relocs
10375 #define elf_backend_emit_relocs \
10376 elf_vxworks_emit_relocs
10377
10378 #undef elf32_bed
10379 #define elf32_bed ppc_elf_vxworks_bed
10380 #undef elf_backend_post_process_headers
10381
10382 #include "elf32-target.h"