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[deliverable/binutils-gdb.git] / bfd / elf32-ppc.c
1 /* PowerPC-specific support for 32-bit ELF
2 Copyright 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
3 2004, 2005 Free Software Foundation, Inc.
4 Written by Ian Lance Taylor, Cygnus Support.
5
6 This file is part of BFD, the Binary File Descriptor library.
7
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2 of the License, or
11 (at your option) any later version.
12
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
17
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the
20 Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor,
21 Boston, MA 02110-1301, USA. */
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 "bfd.h"
29 #include "sysdep.h"
30 #include "bfdlink.h"
31 #include "libbfd.h"
32 #include "elf-bfd.h"
33 #include "elf/ppc.h"
34 #include "elf32-ppc.h"
35
36 /* RELA relocations are used here. */
37
38 static bfd_reloc_status_type ppc_elf_addr16_ha_reloc
39 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
40 static bfd_reloc_status_type ppc_elf_unhandled_reloc
41 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
42
43 /* Branch prediction bit for branch taken relocs. */
44 #define BRANCH_PREDICT_BIT 0x200000
45 /* Mask to set RA in memory instructions. */
46 #define RA_REGISTER_MASK 0x001f0000
47 /* Value to shift register by to insert RA. */
48 #define RA_REGISTER_SHIFT 16
49
50 /* The name of the dynamic interpreter. This is put in the .interp
51 section. */
52 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
53
54 /* For old-style PLT. */
55 /* The size in bytes of an entry in the procedure linkage table. */
56 #define PLT_ENTRY_SIZE 12
57 /* The initial size of the plt reserved for the dynamic linker. */
58 #define PLT_INITIAL_ENTRY_SIZE 72
59 /* The size of the gap between entries in the PLT. */
60 #define PLT_SLOT_SIZE 8
61 /* The number of single-slot PLT entries (the rest use two slots). */
62 #define PLT_NUM_SINGLE_ENTRIES 8192
63
64 /* For new-style .glink and .plt. */
65 #define GLINK_PLTRESOLVE 16*4
66 #define GLINK_ENTRY_SIZE 4*4
67
68 /* Some instructions. */
69 #define ADDIS_11_11 0x3d6b0000
70 #define ADDIS_11_30 0x3d7e0000
71 #define ADDIS_12_12 0x3d8c0000
72 #define ADDI_11_11 0x396b0000
73 #define ADD_0_11_11 0x7c0b5a14
74 #define ADD_11_0_11 0x7d605a14
75 #define B 0x48000000
76 #define BCL_20_31 0x429f0005
77 #define BCTR 0x4e800420
78 #define LIS_11 0x3d600000
79 #define LIS_12 0x3d800000
80 #define LWZU_0_12 0x840c0000
81 #define LWZ_0_12 0x800c0000
82 #define LWZ_11_11 0x816b0000
83 #define LWZ_11_30 0x817e0000
84 #define LWZ_12_12 0x818c0000
85 #define MFLR_0 0x7c0802a6
86 #define MFLR_12 0x7d8802a6
87 #define MTCTR_0 0x7c0903a6
88 #define MTCTR_11 0x7d6903a6
89 #define MTLR_0 0x7c0803a6
90 #define NOP 0x60000000
91 #define SUB_11_11_12 0x7d6c5850
92
93 /* Offset of tp and dtp pointers from start of TLS block. */
94 #define TP_OFFSET 0x7000
95 #define DTP_OFFSET 0x8000
96 \f
97 static reloc_howto_type *ppc_elf_howto_table[R_PPC_max];
98
99 static reloc_howto_type ppc_elf_howto_raw[] = {
100 /* This reloc does nothing. */
101 HOWTO (R_PPC_NONE, /* type */
102 0, /* rightshift */
103 2, /* size (0 = byte, 1 = short, 2 = long) */
104 32, /* bitsize */
105 FALSE, /* pc_relative */
106 0, /* bitpos */
107 complain_overflow_bitfield, /* complain_on_overflow */
108 bfd_elf_generic_reloc, /* special_function */
109 "R_PPC_NONE", /* name */
110 FALSE, /* partial_inplace */
111 0, /* src_mask */
112 0, /* dst_mask */
113 FALSE), /* pcrel_offset */
114
115 /* A standard 32 bit relocation. */
116 HOWTO (R_PPC_ADDR32, /* type */
117 0, /* rightshift */
118 2, /* size (0 = byte, 1 = short, 2 = long) */
119 32, /* bitsize */
120 FALSE, /* pc_relative */
121 0, /* bitpos */
122 complain_overflow_bitfield, /* complain_on_overflow */
123 bfd_elf_generic_reloc, /* special_function */
124 "R_PPC_ADDR32", /* name */
125 FALSE, /* partial_inplace */
126 0, /* src_mask */
127 0xffffffff, /* dst_mask */
128 FALSE), /* pcrel_offset */
129
130 /* An absolute 26 bit branch; the lower two bits must be zero.
131 FIXME: we don't check that, we just clear them. */
132 HOWTO (R_PPC_ADDR24, /* type */
133 0, /* rightshift */
134 2, /* size (0 = byte, 1 = short, 2 = long) */
135 26, /* bitsize */
136 FALSE, /* pc_relative */
137 0, /* bitpos */
138 complain_overflow_bitfield, /* complain_on_overflow */
139 bfd_elf_generic_reloc, /* special_function */
140 "R_PPC_ADDR24", /* name */
141 FALSE, /* partial_inplace */
142 0, /* src_mask */
143 0x3fffffc, /* dst_mask */
144 FALSE), /* pcrel_offset */
145
146 /* A standard 16 bit relocation. */
147 HOWTO (R_PPC_ADDR16, /* type */
148 0, /* rightshift */
149 1, /* size (0 = byte, 1 = short, 2 = long) */
150 16, /* bitsize */
151 FALSE, /* pc_relative */
152 0, /* bitpos */
153 complain_overflow_bitfield, /* complain_on_overflow */
154 bfd_elf_generic_reloc, /* special_function */
155 "R_PPC_ADDR16", /* name */
156 FALSE, /* partial_inplace */
157 0, /* src_mask */
158 0xffff, /* dst_mask */
159 FALSE), /* pcrel_offset */
160
161 /* A 16 bit relocation without overflow. */
162 HOWTO (R_PPC_ADDR16_LO, /* type */
163 0, /* rightshift */
164 1, /* size (0 = byte, 1 = short, 2 = long) */
165 16, /* bitsize */
166 FALSE, /* pc_relative */
167 0, /* bitpos */
168 complain_overflow_dont,/* complain_on_overflow */
169 bfd_elf_generic_reloc, /* special_function */
170 "R_PPC_ADDR16_LO", /* name */
171 FALSE, /* partial_inplace */
172 0, /* src_mask */
173 0xffff, /* dst_mask */
174 FALSE), /* pcrel_offset */
175
176 /* The high order 16 bits of an address. */
177 HOWTO (R_PPC_ADDR16_HI, /* type */
178 16, /* rightshift */
179 1, /* size (0 = byte, 1 = short, 2 = long) */
180 16, /* bitsize */
181 FALSE, /* pc_relative */
182 0, /* bitpos */
183 complain_overflow_dont, /* complain_on_overflow */
184 bfd_elf_generic_reloc, /* special_function */
185 "R_PPC_ADDR16_HI", /* name */
186 FALSE, /* partial_inplace */
187 0, /* src_mask */
188 0xffff, /* dst_mask */
189 FALSE), /* pcrel_offset */
190
191 /* The high order 16 bits of an address, plus 1 if the contents of
192 the low 16 bits, treated as a signed number, is negative. */
193 HOWTO (R_PPC_ADDR16_HA, /* type */
194 16, /* rightshift */
195 1, /* size (0 = byte, 1 = short, 2 = long) */
196 16, /* bitsize */
197 FALSE, /* pc_relative */
198 0, /* bitpos */
199 complain_overflow_dont, /* complain_on_overflow */
200 ppc_elf_addr16_ha_reloc, /* special_function */
201 "R_PPC_ADDR16_HA", /* name */
202 FALSE, /* partial_inplace */
203 0, /* src_mask */
204 0xffff, /* dst_mask */
205 FALSE), /* pcrel_offset */
206
207 /* An absolute 16 bit branch; the lower two bits must be zero.
208 FIXME: we don't check that, we just clear them. */
209 HOWTO (R_PPC_ADDR14, /* type */
210 0, /* rightshift */
211 2, /* size (0 = byte, 1 = short, 2 = long) */
212 16, /* bitsize */
213 FALSE, /* pc_relative */
214 0, /* bitpos */
215 complain_overflow_bitfield, /* complain_on_overflow */
216 bfd_elf_generic_reloc, /* special_function */
217 "R_PPC_ADDR14", /* name */
218 FALSE, /* partial_inplace */
219 0, /* src_mask */
220 0xfffc, /* dst_mask */
221 FALSE), /* pcrel_offset */
222
223 /* An absolute 16 bit branch, for which bit 10 should be set to
224 indicate that the branch is expected to be taken. The lower two
225 bits must be zero. */
226 HOWTO (R_PPC_ADDR14_BRTAKEN, /* type */
227 0, /* rightshift */
228 2, /* size (0 = byte, 1 = short, 2 = long) */
229 16, /* bitsize */
230 FALSE, /* pc_relative */
231 0, /* bitpos */
232 complain_overflow_bitfield, /* complain_on_overflow */
233 bfd_elf_generic_reloc, /* special_function */
234 "R_PPC_ADDR14_BRTAKEN",/* name */
235 FALSE, /* partial_inplace */
236 0, /* src_mask */
237 0xfffc, /* dst_mask */
238 FALSE), /* pcrel_offset */
239
240 /* An absolute 16 bit branch, for which bit 10 should be set to
241 indicate that the branch is not expected to be taken. The lower
242 two bits must be zero. */
243 HOWTO (R_PPC_ADDR14_BRNTAKEN, /* type */
244 0, /* rightshift */
245 2, /* size (0 = byte, 1 = short, 2 = long) */
246 16, /* bitsize */
247 FALSE, /* pc_relative */
248 0, /* bitpos */
249 complain_overflow_bitfield, /* complain_on_overflow */
250 bfd_elf_generic_reloc, /* special_function */
251 "R_PPC_ADDR14_BRNTAKEN",/* name */
252 FALSE, /* partial_inplace */
253 0, /* src_mask */
254 0xfffc, /* dst_mask */
255 FALSE), /* pcrel_offset */
256
257 /* A relative 26 bit branch; the lower two bits must be zero. */
258 HOWTO (R_PPC_REL24, /* type */
259 0, /* rightshift */
260 2, /* size (0 = byte, 1 = short, 2 = long) */
261 26, /* bitsize */
262 TRUE, /* pc_relative */
263 0, /* bitpos */
264 complain_overflow_signed, /* complain_on_overflow */
265 bfd_elf_generic_reloc, /* special_function */
266 "R_PPC_REL24", /* name */
267 FALSE, /* partial_inplace */
268 0, /* src_mask */
269 0x3fffffc, /* dst_mask */
270 TRUE), /* pcrel_offset */
271
272 /* A relative 16 bit branch; the lower two bits must be zero. */
273 HOWTO (R_PPC_REL14, /* type */
274 0, /* rightshift */
275 2, /* size (0 = byte, 1 = short, 2 = long) */
276 16, /* bitsize */
277 TRUE, /* pc_relative */
278 0, /* bitpos */
279 complain_overflow_signed, /* complain_on_overflow */
280 bfd_elf_generic_reloc, /* special_function */
281 "R_PPC_REL14", /* name */
282 FALSE, /* partial_inplace */
283 0, /* src_mask */
284 0xfffc, /* dst_mask */
285 TRUE), /* pcrel_offset */
286
287 /* A relative 16 bit branch. Bit 10 should be set to indicate that
288 the branch is expected to be taken. The lower two bits must be
289 zero. */
290 HOWTO (R_PPC_REL14_BRTAKEN, /* type */
291 0, /* rightshift */
292 2, /* size (0 = byte, 1 = short, 2 = long) */
293 16, /* bitsize */
294 TRUE, /* pc_relative */
295 0, /* bitpos */
296 complain_overflow_signed, /* complain_on_overflow */
297 bfd_elf_generic_reloc, /* special_function */
298 "R_PPC_REL14_BRTAKEN", /* name */
299 FALSE, /* partial_inplace */
300 0, /* src_mask */
301 0xfffc, /* dst_mask */
302 TRUE), /* pcrel_offset */
303
304 /* A relative 16 bit branch. Bit 10 should be set to indicate that
305 the branch is not expected to be taken. The lower two bits must
306 be zero. */
307 HOWTO (R_PPC_REL14_BRNTAKEN, /* type */
308 0, /* rightshift */
309 2, /* size (0 = byte, 1 = short, 2 = long) */
310 16, /* bitsize */
311 TRUE, /* pc_relative */
312 0, /* bitpos */
313 complain_overflow_signed, /* complain_on_overflow */
314 bfd_elf_generic_reloc, /* special_function */
315 "R_PPC_REL14_BRNTAKEN",/* name */
316 FALSE, /* partial_inplace */
317 0, /* src_mask */
318 0xfffc, /* dst_mask */
319 TRUE), /* pcrel_offset */
320
321 /* Like R_PPC_ADDR16, but referring to the GOT table entry for the
322 symbol. */
323 HOWTO (R_PPC_GOT16, /* type */
324 0, /* rightshift */
325 1, /* size (0 = byte, 1 = short, 2 = long) */
326 16, /* bitsize */
327 FALSE, /* pc_relative */
328 0, /* bitpos */
329 complain_overflow_signed, /* complain_on_overflow */
330 bfd_elf_generic_reloc, /* special_function */
331 "R_PPC_GOT16", /* name */
332 FALSE, /* partial_inplace */
333 0, /* src_mask */
334 0xffff, /* dst_mask */
335 FALSE), /* pcrel_offset */
336
337 /* Like R_PPC_ADDR16_LO, but referring to the GOT table entry for
338 the symbol. */
339 HOWTO (R_PPC_GOT16_LO, /* type */
340 0, /* rightshift */
341 1, /* size (0 = byte, 1 = short, 2 = long) */
342 16, /* bitsize */
343 FALSE, /* pc_relative */
344 0, /* bitpos */
345 complain_overflow_dont, /* complain_on_overflow */
346 bfd_elf_generic_reloc, /* special_function */
347 "R_PPC_GOT16_LO", /* name */
348 FALSE, /* partial_inplace */
349 0, /* src_mask */
350 0xffff, /* dst_mask */
351 FALSE), /* pcrel_offset */
352
353 /* Like R_PPC_ADDR16_HI, but referring to the GOT table entry for
354 the symbol. */
355 HOWTO (R_PPC_GOT16_HI, /* type */
356 16, /* rightshift */
357 1, /* size (0 = byte, 1 = short, 2 = long) */
358 16, /* bitsize */
359 FALSE, /* pc_relative */
360 0, /* bitpos */
361 complain_overflow_bitfield, /* complain_on_overflow */
362 bfd_elf_generic_reloc, /* special_function */
363 "R_PPC_GOT16_HI", /* name */
364 FALSE, /* partial_inplace */
365 0, /* src_mask */
366 0xffff, /* dst_mask */
367 FALSE), /* pcrel_offset */
368
369 /* Like R_PPC_ADDR16_HA, but referring to the GOT table entry for
370 the symbol. */
371 HOWTO (R_PPC_GOT16_HA, /* type */
372 16, /* rightshift */
373 1, /* size (0 = byte, 1 = short, 2 = long) */
374 16, /* bitsize */
375 FALSE, /* pc_relative */
376 0, /* bitpos */
377 complain_overflow_bitfield, /* complain_on_overflow */
378 ppc_elf_addr16_ha_reloc, /* special_function */
379 "R_PPC_GOT16_HA", /* name */
380 FALSE, /* partial_inplace */
381 0, /* src_mask */
382 0xffff, /* dst_mask */
383 FALSE), /* pcrel_offset */
384
385 /* Like R_PPC_REL24, but referring to the procedure linkage table
386 entry for the symbol. */
387 HOWTO (R_PPC_PLTREL24, /* type */
388 0, /* rightshift */
389 2, /* size (0 = byte, 1 = short, 2 = long) */
390 26, /* bitsize */
391 TRUE, /* pc_relative */
392 0, /* bitpos */
393 complain_overflow_signed, /* complain_on_overflow */
394 bfd_elf_generic_reloc, /* special_function */
395 "R_PPC_PLTREL24", /* name */
396 FALSE, /* partial_inplace */
397 0, /* src_mask */
398 0x3fffffc, /* dst_mask */
399 TRUE), /* pcrel_offset */
400
401 /* This is used only by the dynamic linker. The symbol should exist
402 both in the object being run and in some shared library. The
403 dynamic linker copies the data addressed by the symbol from the
404 shared library into the object, because the object being
405 run has to have the data at some particular address. */
406 HOWTO (R_PPC_COPY, /* type */
407 0, /* rightshift */
408 2, /* size (0 = byte, 1 = short, 2 = long) */
409 32, /* bitsize */
410 FALSE, /* pc_relative */
411 0, /* bitpos */
412 complain_overflow_bitfield, /* complain_on_overflow */
413 bfd_elf_generic_reloc, /* special_function */
414 "R_PPC_COPY", /* name */
415 FALSE, /* partial_inplace */
416 0, /* src_mask */
417 0, /* dst_mask */
418 FALSE), /* pcrel_offset */
419
420 /* Like R_PPC_ADDR32, but used when setting global offset table
421 entries. */
422 HOWTO (R_PPC_GLOB_DAT, /* type */
423 0, /* rightshift */
424 2, /* size (0 = byte, 1 = short, 2 = long) */
425 32, /* bitsize */
426 FALSE, /* pc_relative */
427 0, /* bitpos */
428 complain_overflow_bitfield, /* complain_on_overflow */
429 bfd_elf_generic_reloc, /* special_function */
430 "R_PPC_GLOB_DAT", /* name */
431 FALSE, /* partial_inplace */
432 0, /* src_mask */
433 0xffffffff, /* dst_mask */
434 FALSE), /* pcrel_offset */
435
436 /* Marks a procedure linkage table entry for a symbol. */
437 HOWTO (R_PPC_JMP_SLOT, /* type */
438 0, /* rightshift */
439 2, /* size (0 = byte, 1 = short, 2 = long) */
440 32, /* bitsize */
441 FALSE, /* pc_relative */
442 0, /* bitpos */
443 complain_overflow_bitfield, /* complain_on_overflow */
444 bfd_elf_generic_reloc, /* special_function */
445 "R_PPC_JMP_SLOT", /* name */
446 FALSE, /* partial_inplace */
447 0, /* src_mask */
448 0, /* dst_mask */
449 FALSE), /* pcrel_offset */
450
451 /* Used only by the dynamic linker. When the object is run, this
452 longword is set to the load address of the object, plus the
453 addend. */
454 HOWTO (R_PPC_RELATIVE, /* type */
455 0, /* rightshift */
456 2, /* size (0 = byte, 1 = short, 2 = long) */
457 32, /* bitsize */
458 FALSE, /* pc_relative */
459 0, /* bitpos */
460 complain_overflow_bitfield, /* complain_on_overflow */
461 bfd_elf_generic_reloc, /* special_function */
462 "R_PPC_RELATIVE", /* name */
463 FALSE, /* partial_inplace */
464 0, /* src_mask */
465 0xffffffff, /* dst_mask */
466 FALSE), /* pcrel_offset */
467
468 /* Like R_PPC_REL24, but uses the value of the symbol within the
469 object rather than the final value. Normally used for
470 _GLOBAL_OFFSET_TABLE_. */
471 HOWTO (R_PPC_LOCAL24PC, /* type */
472 0, /* rightshift */
473 2, /* size (0 = byte, 1 = short, 2 = long) */
474 26, /* bitsize */
475 TRUE, /* pc_relative */
476 0, /* bitpos */
477 complain_overflow_signed, /* complain_on_overflow */
478 bfd_elf_generic_reloc, /* special_function */
479 "R_PPC_LOCAL24PC", /* name */
480 FALSE, /* partial_inplace */
481 0, /* src_mask */
482 0x3fffffc, /* dst_mask */
483 TRUE), /* pcrel_offset */
484
485 /* Like R_PPC_ADDR32, but may be unaligned. */
486 HOWTO (R_PPC_UADDR32, /* type */
487 0, /* rightshift */
488 2, /* size (0 = byte, 1 = short, 2 = long) */
489 32, /* bitsize */
490 FALSE, /* pc_relative */
491 0, /* bitpos */
492 complain_overflow_bitfield, /* complain_on_overflow */
493 bfd_elf_generic_reloc, /* special_function */
494 "R_PPC_UADDR32", /* name */
495 FALSE, /* partial_inplace */
496 0, /* src_mask */
497 0xffffffff, /* dst_mask */
498 FALSE), /* pcrel_offset */
499
500 /* Like R_PPC_ADDR16, but may be unaligned. */
501 HOWTO (R_PPC_UADDR16, /* type */
502 0, /* rightshift */
503 1, /* size (0 = byte, 1 = short, 2 = long) */
504 16, /* bitsize */
505 FALSE, /* pc_relative */
506 0, /* bitpos */
507 complain_overflow_bitfield, /* complain_on_overflow */
508 bfd_elf_generic_reloc, /* special_function */
509 "R_PPC_UADDR16", /* name */
510 FALSE, /* partial_inplace */
511 0, /* src_mask */
512 0xffff, /* dst_mask */
513 FALSE), /* pcrel_offset */
514
515 /* 32-bit PC relative */
516 HOWTO (R_PPC_REL32, /* type */
517 0, /* rightshift */
518 2, /* size (0 = byte, 1 = short, 2 = long) */
519 32, /* bitsize */
520 TRUE, /* pc_relative */
521 0, /* bitpos */
522 complain_overflow_bitfield, /* complain_on_overflow */
523 bfd_elf_generic_reloc, /* special_function */
524 "R_PPC_REL32", /* name */
525 FALSE, /* partial_inplace */
526 0, /* src_mask */
527 0xffffffff, /* dst_mask */
528 TRUE), /* pcrel_offset */
529
530 /* 32-bit relocation to the symbol's procedure linkage table.
531 FIXME: not supported. */
532 HOWTO (R_PPC_PLT32, /* type */
533 0, /* rightshift */
534 2, /* size (0 = byte, 1 = short, 2 = long) */
535 32, /* bitsize */
536 FALSE, /* pc_relative */
537 0, /* bitpos */
538 complain_overflow_bitfield, /* complain_on_overflow */
539 bfd_elf_generic_reloc, /* special_function */
540 "R_PPC_PLT32", /* name */
541 FALSE, /* partial_inplace */
542 0, /* src_mask */
543 0, /* dst_mask */
544 FALSE), /* pcrel_offset */
545
546 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
547 FIXME: not supported. */
548 HOWTO (R_PPC_PLTREL32, /* type */
549 0, /* rightshift */
550 2, /* size (0 = byte, 1 = short, 2 = long) */
551 32, /* bitsize */
552 TRUE, /* pc_relative */
553 0, /* bitpos */
554 complain_overflow_bitfield, /* complain_on_overflow */
555 bfd_elf_generic_reloc, /* special_function */
556 "R_PPC_PLTREL32", /* name */
557 FALSE, /* partial_inplace */
558 0, /* src_mask */
559 0, /* dst_mask */
560 TRUE), /* pcrel_offset */
561
562 /* Like R_PPC_ADDR16_LO, but referring to the PLT table entry for
563 the symbol. */
564 HOWTO (R_PPC_PLT16_LO, /* type */
565 0, /* rightshift */
566 1, /* size (0 = byte, 1 = short, 2 = long) */
567 16, /* bitsize */
568 FALSE, /* pc_relative */
569 0, /* bitpos */
570 complain_overflow_dont, /* complain_on_overflow */
571 bfd_elf_generic_reloc, /* special_function */
572 "R_PPC_PLT16_LO", /* name */
573 FALSE, /* partial_inplace */
574 0, /* src_mask */
575 0xffff, /* dst_mask */
576 FALSE), /* pcrel_offset */
577
578 /* Like R_PPC_ADDR16_HI, but referring to the PLT table entry for
579 the symbol. */
580 HOWTO (R_PPC_PLT16_HI, /* type */
581 16, /* rightshift */
582 1, /* size (0 = byte, 1 = short, 2 = long) */
583 16, /* bitsize */
584 FALSE, /* pc_relative */
585 0, /* bitpos */
586 complain_overflow_bitfield, /* complain_on_overflow */
587 bfd_elf_generic_reloc, /* special_function */
588 "R_PPC_PLT16_HI", /* name */
589 FALSE, /* partial_inplace */
590 0, /* src_mask */
591 0xffff, /* dst_mask */
592 FALSE), /* pcrel_offset */
593
594 /* Like R_PPC_ADDR16_HA, but referring to the PLT table entry for
595 the symbol. */
596 HOWTO (R_PPC_PLT16_HA, /* type */
597 16, /* rightshift */
598 1, /* size (0 = byte, 1 = short, 2 = long) */
599 16, /* bitsize */
600 FALSE, /* pc_relative */
601 0, /* bitpos */
602 complain_overflow_bitfield, /* complain_on_overflow */
603 ppc_elf_addr16_ha_reloc, /* special_function */
604 "R_PPC_PLT16_HA", /* name */
605 FALSE, /* partial_inplace */
606 0, /* src_mask */
607 0xffff, /* dst_mask */
608 FALSE), /* pcrel_offset */
609
610 /* A sign-extended 16 bit value relative to _SDA_BASE_, for use with
611 small data items. */
612 HOWTO (R_PPC_SDAREL16, /* type */
613 0, /* rightshift */
614 1, /* size (0 = byte, 1 = short, 2 = long) */
615 16, /* bitsize */
616 FALSE, /* pc_relative */
617 0, /* bitpos */
618 complain_overflow_signed, /* complain_on_overflow */
619 bfd_elf_generic_reloc, /* special_function */
620 "R_PPC_SDAREL16", /* name */
621 FALSE, /* partial_inplace */
622 0, /* src_mask */
623 0xffff, /* dst_mask */
624 FALSE), /* pcrel_offset */
625
626 /* 16-bit section relative relocation. */
627 HOWTO (R_PPC_SECTOFF, /* type */
628 0, /* rightshift */
629 1, /* size (0 = byte, 1 = short, 2 = long) */
630 16, /* bitsize */
631 FALSE, /* pc_relative */
632 0, /* bitpos */
633 complain_overflow_bitfield, /* complain_on_overflow */
634 bfd_elf_generic_reloc, /* special_function */
635 "R_PPC_SECTOFF", /* name */
636 FALSE, /* partial_inplace */
637 0, /* src_mask */
638 0xffff, /* dst_mask */
639 FALSE), /* pcrel_offset */
640
641 /* 16-bit lower half section relative relocation. */
642 HOWTO (R_PPC_SECTOFF_LO, /* type */
643 0, /* rightshift */
644 1, /* size (0 = byte, 1 = short, 2 = long) */
645 16, /* bitsize */
646 FALSE, /* pc_relative */
647 0, /* bitpos */
648 complain_overflow_dont, /* complain_on_overflow */
649 bfd_elf_generic_reloc, /* special_function */
650 "R_PPC_SECTOFF_LO", /* name */
651 FALSE, /* partial_inplace */
652 0, /* src_mask */
653 0xffff, /* dst_mask */
654 FALSE), /* pcrel_offset */
655
656 /* 16-bit upper half section relative relocation. */
657 HOWTO (R_PPC_SECTOFF_HI, /* type */
658 16, /* rightshift */
659 1, /* size (0 = byte, 1 = short, 2 = long) */
660 16, /* bitsize */
661 FALSE, /* pc_relative */
662 0, /* bitpos */
663 complain_overflow_bitfield, /* complain_on_overflow */
664 bfd_elf_generic_reloc, /* special_function */
665 "R_PPC_SECTOFF_HI", /* name */
666 FALSE, /* partial_inplace */
667 0, /* src_mask */
668 0xffff, /* dst_mask */
669 FALSE), /* pcrel_offset */
670
671 /* 16-bit upper half adjusted section relative relocation. */
672 HOWTO (R_PPC_SECTOFF_HA, /* type */
673 16, /* rightshift */
674 1, /* size (0 = byte, 1 = short, 2 = long) */
675 16, /* bitsize */
676 FALSE, /* pc_relative */
677 0, /* bitpos */
678 complain_overflow_bitfield, /* complain_on_overflow */
679 ppc_elf_addr16_ha_reloc, /* special_function */
680 "R_PPC_SECTOFF_HA", /* name */
681 FALSE, /* partial_inplace */
682 0, /* src_mask */
683 0xffff, /* dst_mask */
684 FALSE), /* pcrel_offset */
685
686 /* Marker reloc for TLS. */
687 HOWTO (R_PPC_TLS,
688 0, /* rightshift */
689 2, /* size (0 = byte, 1 = short, 2 = long) */
690 32, /* bitsize */
691 FALSE, /* pc_relative */
692 0, /* bitpos */
693 complain_overflow_dont, /* complain_on_overflow */
694 bfd_elf_generic_reloc, /* special_function */
695 "R_PPC_TLS", /* name */
696 FALSE, /* partial_inplace */
697 0, /* src_mask */
698 0, /* dst_mask */
699 FALSE), /* pcrel_offset */
700
701 /* Computes the load module index of the load module that contains the
702 definition of its TLS sym. */
703 HOWTO (R_PPC_DTPMOD32,
704 0, /* rightshift */
705 2, /* size (0 = byte, 1 = short, 2 = long) */
706 32, /* bitsize */
707 FALSE, /* pc_relative */
708 0, /* bitpos */
709 complain_overflow_dont, /* complain_on_overflow */
710 ppc_elf_unhandled_reloc, /* special_function */
711 "R_PPC_DTPMOD32", /* name */
712 FALSE, /* partial_inplace */
713 0, /* src_mask */
714 0xffffffff, /* dst_mask */
715 FALSE), /* pcrel_offset */
716
717 /* Computes a dtv-relative displacement, the difference between the value
718 of sym+add and the base address of the thread-local storage block that
719 contains the definition of sym, minus 0x8000. */
720 HOWTO (R_PPC_DTPREL32,
721 0, /* rightshift */
722 2, /* size (0 = byte, 1 = short, 2 = long) */
723 32, /* bitsize */
724 FALSE, /* pc_relative */
725 0, /* bitpos */
726 complain_overflow_dont, /* complain_on_overflow */
727 ppc_elf_unhandled_reloc, /* special_function */
728 "R_PPC_DTPREL32", /* name */
729 FALSE, /* partial_inplace */
730 0, /* src_mask */
731 0xffffffff, /* dst_mask */
732 FALSE), /* pcrel_offset */
733
734 /* A 16 bit dtprel reloc. */
735 HOWTO (R_PPC_DTPREL16,
736 0, /* rightshift */
737 1, /* size (0 = byte, 1 = short, 2 = long) */
738 16, /* bitsize */
739 FALSE, /* pc_relative */
740 0, /* bitpos */
741 complain_overflow_signed, /* complain_on_overflow */
742 ppc_elf_unhandled_reloc, /* special_function */
743 "R_PPC_DTPREL16", /* name */
744 FALSE, /* partial_inplace */
745 0, /* src_mask */
746 0xffff, /* dst_mask */
747 FALSE), /* pcrel_offset */
748
749 /* Like DTPREL16, but no overflow. */
750 HOWTO (R_PPC_DTPREL16_LO,
751 0, /* rightshift */
752 1, /* size (0 = byte, 1 = short, 2 = long) */
753 16, /* bitsize */
754 FALSE, /* pc_relative */
755 0, /* bitpos */
756 complain_overflow_dont, /* complain_on_overflow */
757 ppc_elf_unhandled_reloc, /* special_function */
758 "R_PPC_DTPREL16_LO", /* name */
759 FALSE, /* partial_inplace */
760 0, /* src_mask */
761 0xffff, /* dst_mask */
762 FALSE), /* pcrel_offset */
763
764 /* Like DTPREL16_LO, but next higher group of 16 bits. */
765 HOWTO (R_PPC_DTPREL16_HI,
766 16, /* rightshift */
767 1, /* size (0 = byte, 1 = short, 2 = long) */
768 16, /* bitsize */
769 FALSE, /* pc_relative */
770 0, /* bitpos */
771 complain_overflow_dont, /* complain_on_overflow */
772 ppc_elf_unhandled_reloc, /* special_function */
773 "R_PPC_DTPREL16_HI", /* name */
774 FALSE, /* partial_inplace */
775 0, /* src_mask */
776 0xffff, /* dst_mask */
777 FALSE), /* pcrel_offset */
778
779 /* Like DTPREL16_HI, but adjust for low 16 bits. */
780 HOWTO (R_PPC_DTPREL16_HA,
781 16, /* rightshift */
782 1, /* size (0 = byte, 1 = short, 2 = long) */
783 16, /* bitsize */
784 FALSE, /* pc_relative */
785 0, /* bitpos */
786 complain_overflow_dont, /* complain_on_overflow */
787 ppc_elf_unhandled_reloc, /* special_function */
788 "R_PPC_DTPREL16_HA", /* name */
789 FALSE, /* partial_inplace */
790 0, /* src_mask */
791 0xffff, /* dst_mask */
792 FALSE), /* pcrel_offset */
793
794 /* Computes a tp-relative displacement, the difference between the value of
795 sym+add and the value of the thread pointer (r13). */
796 HOWTO (R_PPC_TPREL32,
797 0, /* rightshift */
798 2, /* size (0 = byte, 1 = short, 2 = long) */
799 32, /* bitsize */
800 FALSE, /* pc_relative */
801 0, /* bitpos */
802 complain_overflow_dont, /* complain_on_overflow */
803 ppc_elf_unhandled_reloc, /* special_function */
804 "R_PPC_TPREL32", /* name */
805 FALSE, /* partial_inplace */
806 0, /* src_mask */
807 0xffffffff, /* dst_mask */
808 FALSE), /* pcrel_offset */
809
810 /* A 16 bit tprel reloc. */
811 HOWTO (R_PPC_TPREL16,
812 0, /* rightshift */
813 1, /* size (0 = byte, 1 = short, 2 = long) */
814 16, /* bitsize */
815 FALSE, /* pc_relative */
816 0, /* bitpos */
817 complain_overflow_signed, /* complain_on_overflow */
818 ppc_elf_unhandled_reloc, /* special_function */
819 "R_PPC_TPREL16", /* name */
820 FALSE, /* partial_inplace */
821 0, /* src_mask */
822 0xffff, /* dst_mask */
823 FALSE), /* pcrel_offset */
824
825 /* Like TPREL16, but no overflow. */
826 HOWTO (R_PPC_TPREL16_LO,
827 0, /* rightshift */
828 1, /* size (0 = byte, 1 = short, 2 = long) */
829 16, /* bitsize */
830 FALSE, /* pc_relative */
831 0, /* bitpos */
832 complain_overflow_dont, /* complain_on_overflow */
833 ppc_elf_unhandled_reloc, /* special_function */
834 "R_PPC_TPREL16_LO", /* name */
835 FALSE, /* partial_inplace */
836 0, /* src_mask */
837 0xffff, /* dst_mask */
838 FALSE), /* pcrel_offset */
839
840 /* Like TPREL16_LO, but next higher group of 16 bits. */
841 HOWTO (R_PPC_TPREL16_HI,
842 16, /* rightshift */
843 1, /* size (0 = byte, 1 = short, 2 = long) */
844 16, /* bitsize */
845 FALSE, /* pc_relative */
846 0, /* bitpos */
847 complain_overflow_dont, /* complain_on_overflow */
848 ppc_elf_unhandled_reloc, /* special_function */
849 "R_PPC_TPREL16_HI", /* name */
850 FALSE, /* partial_inplace */
851 0, /* src_mask */
852 0xffff, /* dst_mask */
853 FALSE), /* pcrel_offset */
854
855 /* Like TPREL16_HI, but adjust for low 16 bits. */
856 HOWTO (R_PPC_TPREL16_HA,
857 16, /* rightshift */
858 1, /* size (0 = byte, 1 = short, 2 = long) */
859 16, /* bitsize */
860 FALSE, /* pc_relative */
861 0, /* bitpos */
862 complain_overflow_dont, /* complain_on_overflow */
863 ppc_elf_unhandled_reloc, /* special_function */
864 "R_PPC_TPREL16_HA", /* name */
865 FALSE, /* partial_inplace */
866 0, /* src_mask */
867 0xffff, /* dst_mask */
868 FALSE), /* pcrel_offset */
869
870 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
871 with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
872 to the first entry. */
873 HOWTO (R_PPC_GOT_TLSGD16,
874 0, /* rightshift */
875 1, /* size (0 = byte, 1 = short, 2 = long) */
876 16, /* bitsize */
877 FALSE, /* pc_relative */
878 0, /* bitpos */
879 complain_overflow_signed, /* complain_on_overflow */
880 ppc_elf_unhandled_reloc, /* special_function */
881 "R_PPC_GOT_TLSGD16", /* name */
882 FALSE, /* partial_inplace */
883 0, /* src_mask */
884 0xffff, /* dst_mask */
885 FALSE), /* pcrel_offset */
886
887 /* Like GOT_TLSGD16, but no overflow. */
888 HOWTO (R_PPC_GOT_TLSGD16_LO,
889 0, /* rightshift */
890 1, /* size (0 = byte, 1 = short, 2 = long) */
891 16, /* bitsize */
892 FALSE, /* pc_relative */
893 0, /* bitpos */
894 complain_overflow_dont, /* complain_on_overflow */
895 ppc_elf_unhandled_reloc, /* special_function */
896 "R_PPC_GOT_TLSGD16_LO", /* name */
897 FALSE, /* partial_inplace */
898 0, /* src_mask */
899 0xffff, /* dst_mask */
900 FALSE), /* pcrel_offset */
901
902 /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
903 HOWTO (R_PPC_GOT_TLSGD16_HI,
904 16, /* rightshift */
905 1, /* size (0 = byte, 1 = short, 2 = long) */
906 16, /* bitsize */
907 FALSE, /* pc_relative */
908 0, /* bitpos */
909 complain_overflow_dont, /* complain_on_overflow */
910 ppc_elf_unhandled_reloc, /* special_function */
911 "R_PPC_GOT_TLSGD16_HI", /* name */
912 FALSE, /* partial_inplace */
913 0, /* src_mask */
914 0xffff, /* dst_mask */
915 FALSE), /* pcrel_offset */
916
917 /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
918 HOWTO (R_PPC_GOT_TLSGD16_HA,
919 16, /* rightshift */
920 1, /* size (0 = byte, 1 = short, 2 = long) */
921 16, /* bitsize */
922 FALSE, /* pc_relative */
923 0, /* bitpos */
924 complain_overflow_dont, /* complain_on_overflow */
925 ppc_elf_unhandled_reloc, /* special_function */
926 "R_PPC_GOT_TLSGD16_HA", /* name */
927 FALSE, /* partial_inplace */
928 0, /* src_mask */
929 0xffff, /* dst_mask */
930 FALSE), /* pcrel_offset */
931
932 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
933 with values (sym+add)@dtpmod and zero, and computes the offset to the
934 first entry. */
935 HOWTO (R_PPC_GOT_TLSLD16,
936 0, /* rightshift */
937 1, /* size (0 = byte, 1 = short, 2 = long) */
938 16, /* bitsize */
939 FALSE, /* pc_relative */
940 0, /* bitpos */
941 complain_overflow_signed, /* complain_on_overflow */
942 ppc_elf_unhandled_reloc, /* special_function */
943 "R_PPC_GOT_TLSLD16", /* name */
944 FALSE, /* partial_inplace */
945 0, /* src_mask */
946 0xffff, /* dst_mask */
947 FALSE), /* pcrel_offset */
948
949 /* Like GOT_TLSLD16, but no overflow. */
950 HOWTO (R_PPC_GOT_TLSLD16_LO,
951 0, /* rightshift */
952 1, /* size (0 = byte, 1 = short, 2 = long) */
953 16, /* bitsize */
954 FALSE, /* pc_relative */
955 0, /* bitpos */
956 complain_overflow_dont, /* complain_on_overflow */
957 ppc_elf_unhandled_reloc, /* special_function */
958 "R_PPC_GOT_TLSLD16_LO", /* name */
959 FALSE, /* partial_inplace */
960 0, /* src_mask */
961 0xffff, /* dst_mask */
962 FALSE), /* pcrel_offset */
963
964 /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
965 HOWTO (R_PPC_GOT_TLSLD16_HI,
966 16, /* rightshift */
967 1, /* size (0 = byte, 1 = short, 2 = long) */
968 16, /* bitsize */
969 FALSE, /* pc_relative */
970 0, /* bitpos */
971 complain_overflow_dont, /* complain_on_overflow */
972 ppc_elf_unhandled_reloc, /* special_function */
973 "R_PPC_GOT_TLSLD16_HI", /* name */
974 FALSE, /* partial_inplace */
975 0, /* src_mask */
976 0xffff, /* dst_mask */
977 FALSE), /* pcrel_offset */
978
979 /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
980 HOWTO (R_PPC_GOT_TLSLD16_HA,
981 16, /* rightshift */
982 1, /* size (0 = byte, 1 = short, 2 = long) */
983 16, /* bitsize */
984 FALSE, /* pc_relative */
985 0, /* bitpos */
986 complain_overflow_dont, /* complain_on_overflow */
987 ppc_elf_unhandled_reloc, /* special_function */
988 "R_PPC_GOT_TLSLD16_HA", /* name */
989 FALSE, /* partial_inplace */
990 0, /* src_mask */
991 0xffff, /* dst_mask */
992 FALSE), /* pcrel_offset */
993
994 /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
995 the offset to the entry. */
996 HOWTO (R_PPC_GOT_DTPREL16,
997 0, /* rightshift */
998 1, /* size (0 = byte, 1 = short, 2 = long) */
999 16, /* bitsize */
1000 FALSE, /* pc_relative */
1001 0, /* bitpos */
1002 complain_overflow_signed, /* complain_on_overflow */
1003 ppc_elf_unhandled_reloc, /* special_function */
1004 "R_PPC_GOT_DTPREL16", /* name */
1005 FALSE, /* partial_inplace */
1006 0, /* src_mask */
1007 0xffff, /* dst_mask */
1008 FALSE), /* pcrel_offset */
1009
1010 /* Like GOT_DTPREL16, but no overflow. */
1011 HOWTO (R_PPC_GOT_DTPREL16_LO,
1012 0, /* rightshift */
1013 1, /* size (0 = byte, 1 = short, 2 = long) */
1014 16, /* bitsize */
1015 FALSE, /* pc_relative */
1016 0, /* bitpos */
1017 complain_overflow_dont, /* complain_on_overflow */
1018 ppc_elf_unhandled_reloc, /* special_function */
1019 "R_PPC_GOT_DTPREL16_LO", /* name */
1020 FALSE, /* partial_inplace */
1021 0, /* src_mask */
1022 0xffff, /* dst_mask */
1023 FALSE), /* pcrel_offset */
1024
1025 /* Like GOT_DTPREL16_LO, but next higher group of 16 bits. */
1026 HOWTO (R_PPC_GOT_DTPREL16_HI,
1027 16, /* rightshift */
1028 1, /* size (0 = byte, 1 = short, 2 = long) */
1029 16, /* bitsize */
1030 FALSE, /* pc_relative */
1031 0, /* bitpos */
1032 complain_overflow_dont, /* complain_on_overflow */
1033 ppc_elf_unhandled_reloc, /* special_function */
1034 "R_PPC_GOT_DTPREL16_HI", /* name */
1035 FALSE, /* partial_inplace */
1036 0, /* src_mask */
1037 0xffff, /* dst_mask */
1038 FALSE), /* pcrel_offset */
1039
1040 /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
1041 HOWTO (R_PPC_GOT_DTPREL16_HA,
1042 16, /* rightshift */
1043 1, /* size (0 = byte, 1 = short, 2 = long) */
1044 16, /* bitsize */
1045 FALSE, /* pc_relative */
1046 0, /* bitpos */
1047 complain_overflow_dont, /* complain_on_overflow */
1048 ppc_elf_unhandled_reloc, /* special_function */
1049 "R_PPC_GOT_DTPREL16_HA", /* name */
1050 FALSE, /* partial_inplace */
1051 0, /* src_mask */
1052 0xffff, /* dst_mask */
1053 FALSE), /* pcrel_offset */
1054
1055 /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
1056 offset to the entry. */
1057 HOWTO (R_PPC_GOT_TPREL16,
1058 0, /* rightshift */
1059 1, /* size (0 = byte, 1 = short, 2 = long) */
1060 16, /* bitsize */
1061 FALSE, /* pc_relative */
1062 0, /* bitpos */
1063 complain_overflow_signed, /* complain_on_overflow */
1064 ppc_elf_unhandled_reloc, /* special_function */
1065 "R_PPC_GOT_TPREL16", /* name */
1066 FALSE, /* partial_inplace */
1067 0, /* src_mask */
1068 0xffff, /* dst_mask */
1069 FALSE), /* pcrel_offset */
1070
1071 /* Like GOT_TPREL16, but no overflow. */
1072 HOWTO (R_PPC_GOT_TPREL16_LO,
1073 0, /* rightshift */
1074 1, /* size (0 = byte, 1 = short, 2 = long) */
1075 16, /* bitsize */
1076 FALSE, /* pc_relative */
1077 0, /* bitpos */
1078 complain_overflow_dont, /* complain_on_overflow */
1079 ppc_elf_unhandled_reloc, /* special_function */
1080 "R_PPC_GOT_TPREL16_LO", /* name */
1081 FALSE, /* partial_inplace */
1082 0, /* src_mask */
1083 0xffff, /* dst_mask */
1084 FALSE), /* pcrel_offset */
1085
1086 /* Like GOT_TPREL16_LO, but next higher group of 16 bits. */
1087 HOWTO (R_PPC_GOT_TPREL16_HI,
1088 16, /* rightshift */
1089 1, /* size (0 = byte, 1 = short, 2 = long) */
1090 16, /* bitsize */
1091 FALSE, /* pc_relative */
1092 0, /* bitpos */
1093 complain_overflow_dont, /* complain_on_overflow */
1094 ppc_elf_unhandled_reloc, /* special_function */
1095 "R_PPC_GOT_TPREL16_HI", /* name */
1096 FALSE, /* partial_inplace */
1097 0, /* src_mask */
1098 0xffff, /* dst_mask */
1099 FALSE), /* pcrel_offset */
1100
1101 /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
1102 HOWTO (R_PPC_GOT_TPREL16_HA,
1103 16, /* rightshift */
1104 1, /* size (0 = byte, 1 = short, 2 = long) */
1105 16, /* bitsize */
1106 FALSE, /* pc_relative */
1107 0, /* bitpos */
1108 complain_overflow_dont, /* complain_on_overflow */
1109 ppc_elf_unhandled_reloc, /* special_function */
1110 "R_PPC_GOT_TPREL16_HA", /* name */
1111 FALSE, /* partial_inplace */
1112 0, /* src_mask */
1113 0xffff, /* dst_mask */
1114 FALSE), /* pcrel_offset */
1115
1116 /* The remaining relocs are from the Embedded ELF ABI, and are not
1117 in the SVR4 ELF ABI. */
1118
1119 /* 32 bit value resulting from the addend minus the symbol. */
1120 HOWTO (R_PPC_EMB_NADDR32, /* type */
1121 0, /* rightshift */
1122 2, /* size (0 = byte, 1 = short, 2 = long) */
1123 32, /* bitsize */
1124 FALSE, /* pc_relative */
1125 0, /* bitpos */
1126 complain_overflow_bitfield, /* complain_on_overflow */
1127 bfd_elf_generic_reloc, /* special_function */
1128 "R_PPC_EMB_NADDR32", /* name */
1129 FALSE, /* partial_inplace */
1130 0, /* src_mask */
1131 0xffffffff, /* dst_mask */
1132 FALSE), /* pcrel_offset */
1133
1134 /* 16 bit value resulting from the addend minus the symbol. */
1135 HOWTO (R_PPC_EMB_NADDR16, /* type */
1136 0, /* rightshift */
1137 1, /* size (0 = byte, 1 = short, 2 = long) */
1138 16, /* bitsize */
1139 FALSE, /* pc_relative */
1140 0, /* bitpos */
1141 complain_overflow_bitfield, /* complain_on_overflow */
1142 bfd_elf_generic_reloc, /* special_function */
1143 "R_PPC_EMB_NADDR16", /* name */
1144 FALSE, /* partial_inplace */
1145 0, /* src_mask */
1146 0xffff, /* dst_mask */
1147 FALSE), /* pcrel_offset */
1148
1149 /* 16 bit value resulting from the addend minus the symbol. */
1150 HOWTO (R_PPC_EMB_NADDR16_LO, /* type */
1151 0, /* rightshift */
1152 1, /* size (0 = byte, 1 = short, 2 = long) */
1153 16, /* bitsize */
1154 FALSE, /* pc_relative */
1155 0, /* bitpos */
1156 complain_overflow_dont,/* complain_on_overflow */
1157 bfd_elf_generic_reloc, /* special_function */
1158 "R_PPC_EMB_ADDR16_LO", /* name */
1159 FALSE, /* partial_inplace */
1160 0, /* src_mask */
1161 0xffff, /* dst_mask */
1162 FALSE), /* pcrel_offset */
1163
1164 /* The high order 16 bits of the addend minus the symbol. */
1165 HOWTO (R_PPC_EMB_NADDR16_HI, /* type */
1166 16, /* rightshift */
1167 1, /* size (0 = byte, 1 = short, 2 = long) */
1168 16, /* bitsize */
1169 FALSE, /* pc_relative */
1170 0, /* bitpos */
1171 complain_overflow_dont, /* complain_on_overflow */
1172 bfd_elf_generic_reloc, /* special_function */
1173 "R_PPC_EMB_NADDR16_HI", /* name */
1174 FALSE, /* partial_inplace */
1175 0, /* src_mask */
1176 0xffff, /* dst_mask */
1177 FALSE), /* pcrel_offset */
1178
1179 /* The high order 16 bits of the result of the addend minus the address,
1180 plus 1 if the contents of the low 16 bits, treated as a signed number,
1181 is negative. */
1182 HOWTO (R_PPC_EMB_NADDR16_HA, /* type */
1183 16, /* rightshift */
1184 1, /* size (0 = byte, 1 = short, 2 = long) */
1185 16, /* bitsize */
1186 FALSE, /* pc_relative */
1187 0, /* bitpos */
1188 complain_overflow_dont, /* complain_on_overflow */
1189 ppc_elf_addr16_ha_reloc, /* special_function */
1190 "R_PPC_EMB_NADDR16_HA", /* name */
1191 FALSE, /* partial_inplace */
1192 0, /* src_mask */
1193 0xffff, /* dst_mask */
1194 FALSE), /* pcrel_offset */
1195
1196 /* 16 bit value resulting from allocating a 4 byte word to hold an
1197 address in the .sdata section, and returning the offset from
1198 _SDA_BASE_ for that relocation. */
1199 HOWTO (R_PPC_EMB_SDAI16, /* type */
1200 0, /* rightshift */
1201 1, /* size (0 = byte, 1 = short, 2 = long) */
1202 16, /* bitsize */
1203 FALSE, /* pc_relative */
1204 0, /* bitpos */
1205 complain_overflow_bitfield, /* complain_on_overflow */
1206 bfd_elf_generic_reloc, /* special_function */
1207 "R_PPC_EMB_SDAI16", /* name */
1208 FALSE, /* partial_inplace */
1209 0, /* src_mask */
1210 0xffff, /* dst_mask */
1211 FALSE), /* pcrel_offset */
1212
1213 /* 16 bit value resulting from allocating a 4 byte word to hold an
1214 address in the .sdata2 section, and returning the offset from
1215 _SDA2_BASE_ for that relocation. */
1216 HOWTO (R_PPC_EMB_SDA2I16, /* type */
1217 0, /* rightshift */
1218 1, /* size (0 = byte, 1 = short, 2 = long) */
1219 16, /* bitsize */
1220 FALSE, /* pc_relative */
1221 0, /* bitpos */
1222 complain_overflow_bitfield, /* complain_on_overflow */
1223 bfd_elf_generic_reloc, /* special_function */
1224 "R_PPC_EMB_SDA2I16", /* name */
1225 FALSE, /* partial_inplace */
1226 0, /* src_mask */
1227 0xffff, /* dst_mask */
1228 FALSE), /* pcrel_offset */
1229
1230 /* A sign-extended 16 bit value relative to _SDA2_BASE_, for use with
1231 small data items. */
1232 HOWTO (R_PPC_EMB_SDA2REL, /* type */
1233 0, /* rightshift */
1234 1, /* size (0 = byte, 1 = short, 2 = long) */
1235 16, /* bitsize */
1236 FALSE, /* pc_relative */
1237 0, /* bitpos */
1238 complain_overflow_signed, /* complain_on_overflow */
1239 bfd_elf_generic_reloc, /* special_function */
1240 "R_PPC_EMB_SDA2REL", /* name */
1241 FALSE, /* partial_inplace */
1242 0, /* src_mask */
1243 0xffff, /* dst_mask */
1244 FALSE), /* pcrel_offset */
1245
1246 /* Relocate against either _SDA_BASE_ or _SDA2_BASE_, filling in the 16 bit
1247 signed offset from the appropriate base, and filling in the register
1248 field with the appropriate register (0, 2, or 13). */
1249 HOWTO (R_PPC_EMB_SDA21, /* type */
1250 0, /* rightshift */
1251 2, /* size (0 = byte, 1 = short, 2 = long) */
1252 16, /* bitsize */
1253 FALSE, /* pc_relative */
1254 0, /* bitpos */
1255 complain_overflow_signed, /* complain_on_overflow */
1256 bfd_elf_generic_reloc, /* special_function */
1257 "R_PPC_EMB_SDA21", /* name */
1258 FALSE, /* partial_inplace */
1259 0, /* src_mask */
1260 0xffff, /* dst_mask */
1261 FALSE), /* pcrel_offset */
1262
1263 /* Relocation not handled: R_PPC_EMB_MRKREF */
1264 /* Relocation not handled: R_PPC_EMB_RELSEC16 */
1265 /* Relocation not handled: R_PPC_EMB_RELST_LO */
1266 /* Relocation not handled: R_PPC_EMB_RELST_HI */
1267 /* Relocation not handled: R_PPC_EMB_RELST_HA */
1268 /* Relocation not handled: R_PPC_EMB_BIT_FLD */
1269
1270 /* PC relative relocation against either _SDA_BASE_ or _SDA2_BASE_, filling
1271 in the 16 bit signed offset from the appropriate base, and filling in the
1272 register field with the appropriate register (0, 2, or 13). */
1273 HOWTO (R_PPC_EMB_RELSDA, /* type */
1274 0, /* rightshift */
1275 1, /* size (0 = byte, 1 = short, 2 = long) */
1276 16, /* bitsize */
1277 TRUE, /* pc_relative */
1278 0, /* bitpos */
1279 complain_overflow_signed, /* complain_on_overflow */
1280 bfd_elf_generic_reloc, /* special_function */
1281 "R_PPC_EMB_RELSDA", /* name */
1282 FALSE, /* partial_inplace */
1283 0, /* src_mask */
1284 0xffff, /* dst_mask */
1285 FALSE), /* pcrel_offset */
1286
1287 /* A 16 bit relative relocation. */
1288 HOWTO (R_PPC_REL16, /* type */
1289 0, /* rightshift */
1290 1, /* size (0 = byte, 1 = short, 2 = long) */
1291 16, /* bitsize */
1292 TRUE, /* pc_relative */
1293 0, /* bitpos */
1294 complain_overflow_bitfield, /* complain_on_overflow */
1295 bfd_elf_generic_reloc, /* special_function */
1296 "R_PPC_REL16", /* name */
1297 FALSE, /* partial_inplace */
1298 0, /* src_mask */
1299 0xffff, /* dst_mask */
1300 TRUE), /* pcrel_offset */
1301
1302 /* A 16 bit relative relocation without overflow. */
1303 HOWTO (R_PPC_REL16_LO, /* type */
1304 0, /* rightshift */
1305 1, /* size (0 = byte, 1 = short, 2 = long) */
1306 16, /* bitsize */
1307 TRUE, /* pc_relative */
1308 0, /* bitpos */
1309 complain_overflow_dont,/* complain_on_overflow */
1310 bfd_elf_generic_reloc, /* special_function */
1311 "R_PPC_REL16_LO", /* name */
1312 FALSE, /* partial_inplace */
1313 0, /* src_mask */
1314 0xffff, /* dst_mask */
1315 TRUE), /* pcrel_offset */
1316
1317 /* The high order 16 bits of a relative address. */
1318 HOWTO (R_PPC_REL16_HI, /* type */
1319 16, /* rightshift */
1320 1, /* size (0 = byte, 1 = short, 2 = long) */
1321 16, /* bitsize */
1322 TRUE, /* pc_relative */
1323 0, /* bitpos */
1324 complain_overflow_dont, /* complain_on_overflow */
1325 bfd_elf_generic_reloc, /* special_function */
1326 "R_PPC_REL16_HI", /* name */
1327 FALSE, /* partial_inplace */
1328 0, /* src_mask */
1329 0xffff, /* dst_mask */
1330 TRUE), /* pcrel_offset */
1331
1332 /* The high order 16 bits of a relative address, plus 1 if the contents of
1333 the low 16 bits, treated as a signed number, is negative. */
1334 HOWTO (R_PPC_REL16_HA, /* type */
1335 16, /* rightshift */
1336 1, /* size (0 = byte, 1 = short, 2 = long) */
1337 16, /* bitsize */
1338 TRUE, /* pc_relative */
1339 0, /* bitpos */
1340 complain_overflow_dont, /* complain_on_overflow */
1341 ppc_elf_addr16_ha_reloc, /* special_function */
1342 "R_PPC_REL16_HA", /* name */
1343 FALSE, /* partial_inplace */
1344 0, /* src_mask */
1345 0xffff, /* dst_mask */
1346 TRUE), /* pcrel_offset */
1347
1348 /* GNU extension to record C++ vtable hierarchy. */
1349 HOWTO (R_PPC_GNU_VTINHERIT, /* type */
1350 0, /* rightshift */
1351 0, /* size (0 = byte, 1 = short, 2 = long) */
1352 0, /* bitsize */
1353 FALSE, /* pc_relative */
1354 0, /* bitpos */
1355 complain_overflow_dont, /* complain_on_overflow */
1356 NULL, /* special_function */
1357 "R_PPC_GNU_VTINHERIT", /* name */
1358 FALSE, /* partial_inplace */
1359 0, /* src_mask */
1360 0, /* dst_mask */
1361 FALSE), /* pcrel_offset */
1362
1363 /* GNU extension to record C++ vtable member usage. */
1364 HOWTO (R_PPC_GNU_VTENTRY, /* type */
1365 0, /* rightshift */
1366 0, /* size (0 = byte, 1 = short, 2 = long) */
1367 0, /* bitsize */
1368 FALSE, /* pc_relative */
1369 0, /* bitpos */
1370 complain_overflow_dont, /* complain_on_overflow */
1371 NULL, /* special_function */
1372 "R_PPC_GNU_VTENTRY", /* name */
1373 FALSE, /* partial_inplace */
1374 0, /* src_mask */
1375 0, /* dst_mask */
1376 FALSE), /* pcrel_offset */
1377
1378 /* Phony reloc to handle AIX style TOC entries. */
1379 HOWTO (R_PPC_TOC16, /* type */
1380 0, /* rightshift */
1381 1, /* size (0 = byte, 1 = short, 2 = long) */
1382 16, /* bitsize */
1383 FALSE, /* pc_relative */
1384 0, /* bitpos */
1385 complain_overflow_signed, /* complain_on_overflow */
1386 bfd_elf_generic_reloc, /* special_function */
1387 "R_PPC_TOC16", /* name */
1388 FALSE, /* partial_inplace */
1389 0, /* src_mask */
1390 0xffff, /* dst_mask */
1391 FALSE), /* pcrel_offset */
1392 };
1393 \f
1394 /* Initialize the ppc_elf_howto_table, so that linear accesses can be done. */
1395
1396 static void
1397 ppc_elf_howto_init (void)
1398 {
1399 unsigned int i, type;
1400
1401 for (i = 0;
1402 i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]);
1403 i++)
1404 {
1405 type = ppc_elf_howto_raw[i].type;
1406 if (type >= (sizeof (ppc_elf_howto_table)
1407 / sizeof (ppc_elf_howto_table[0])))
1408 abort ();
1409 ppc_elf_howto_table[type] = &ppc_elf_howto_raw[i];
1410 }
1411 }
1412
1413 static reloc_howto_type *
1414 ppc_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1415 bfd_reloc_code_real_type code)
1416 {
1417 enum elf_ppc_reloc_type r;
1418
1419 /* Initialize howto table if not already done. */
1420 if (!ppc_elf_howto_table[R_PPC_ADDR32])
1421 ppc_elf_howto_init ();
1422
1423 switch (code)
1424 {
1425 default:
1426 return NULL;
1427
1428 case BFD_RELOC_NONE: r = R_PPC_NONE; break;
1429 case BFD_RELOC_32: r = R_PPC_ADDR32; break;
1430 case BFD_RELOC_PPC_BA26: r = R_PPC_ADDR24; break;
1431 case BFD_RELOC_16: r = R_PPC_ADDR16; break;
1432 case BFD_RELOC_LO16: r = R_PPC_ADDR16_LO; break;
1433 case BFD_RELOC_HI16: r = R_PPC_ADDR16_HI; break;
1434 case BFD_RELOC_HI16_S: r = R_PPC_ADDR16_HA; break;
1435 case BFD_RELOC_PPC_BA16: r = R_PPC_ADDR14; break;
1436 case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC_ADDR14_BRTAKEN; break;
1437 case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC_ADDR14_BRNTAKEN; break;
1438 case BFD_RELOC_PPC_B26: r = R_PPC_REL24; break;
1439 case BFD_RELOC_PPC_B16: r = R_PPC_REL14; break;
1440 case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC_REL14_BRTAKEN; break;
1441 case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC_REL14_BRNTAKEN; break;
1442 case BFD_RELOC_16_GOTOFF: r = R_PPC_GOT16; break;
1443 case BFD_RELOC_LO16_GOTOFF: r = R_PPC_GOT16_LO; break;
1444 case BFD_RELOC_HI16_GOTOFF: r = R_PPC_GOT16_HI; break;
1445 case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC_GOT16_HA; break;
1446 case BFD_RELOC_24_PLT_PCREL: r = R_PPC_PLTREL24; break;
1447 case BFD_RELOC_PPC_COPY: r = R_PPC_COPY; break;
1448 case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC_GLOB_DAT; break;
1449 case BFD_RELOC_PPC_LOCAL24PC: r = R_PPC_LOCAL24PC; break;
1450 case BFD_RELOC_32_PCREL: r = R_PPC_REL32; break;
1451 case BFD_RELOC_32_PLTOFF: r = R_PPC_PLT32; break;
1452 case BFD_RELOC_32_PLT_PCREL: r = R_PPC_PLTREL32; break;
1453 case BFD_RELOC_LO16_PLTOFF: r = R_PPC_PLT16_LO; break;
1454 case BFD_RELOC_HI16_PLTOFF: r = R_PPC_PLT16_HI; break;
1455 case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC_PLT16_HA; break;
1456 case BFD_RELOC_GPREL16: r = R_PPC_SDAREL16; break;
1457 case BFD_RELOC_16_BASEREL: r = R_PPC_SECTOFF; break;
1458 case BFD_RELOC_LO16_BASEREL: r = R_PPC_SECTOFF_LO; break;
1459 case BFD_RELOC_HI16_BASEREL: r = R_PPC_SECTOFF_HI; break;
1460 case BFD_RELOC_HI16_S_BASEREL: r = R_PPC_SECTOFF_HA; break;
1461 case BFD_RELOC_CTOR: r = R_PPC_ADDR32; break;
1462 case BFD_RELOC_PPC_TOC16: r = R_PPC_TOC16; break;
1463 case BFD_RELOC_PPC_TLS: r = R_PPC_TLS; break;
1464 case BFD_RELOC_PPC_DTPMOD: r = R_PPC_DTPMOD32; break;
1465 case BFD_RELOC_PPC_TPREL16: r = R_PPC_TPREL16; break;
1466 case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC_TPREL16_LO; break;
1467 case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC_TPREL16_HI; break;
1468 case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC_TPREL16_HA; break;
1469 case BFD_RELOC_PPC_TPREL: r = R_PPC_TPREL32; break;
1470 case BFD_RELOC_PPC_DTPREL16: r = R_PPC_DTPREL16; break;
1471 case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC_DTPREL16_LO; break;
1472 case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC_DTPREL16_HI; break;
1473 case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC_DTPREL16_HA; break;
1474 case BFD_RELOC_PPC_DTPREL: r = R_PPC_DTPREL32; break;
1475 case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC_GOT_TLSGD16; break;
1476 case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC_GOT_TLSGD16_LO; break;
1477 case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC_GOT_TLSGD16_HI; break;
1478 case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC_GOT_TLSGD16_HA; break;
1479 case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC_GOT_TLSLD16; break;
1480 case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC_GOT_TLSLD16_LO; break;
1481 case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC_GOT_TLSLD16_HI; break;
1482 case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC_GOT_TLSLD16_HA; break;
1483 case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC_GOT_TPREL16; break;
1484 case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC_GOT_TPREL16_LO; break;
1485 case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC_GOT_TPREL16_HI; break;
1486 case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC_GOT_TPREL16_HA; break;
1487 case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC_GOT_DTPREL16; break;
1488 case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC_GOT_DTPREL16_LO; break;
1489 case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC_GOT_DTPREL16_HI; break;
1490 case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC_GOT_DTPREL16_HA; break;
1491 case BFD_RELOC_PPC_EMB_NADDR32: r = R_PPC_EMB_NADDR32; break;
1492 case BFD_RELOC_PPC_EMB_NADDR16: r = R_PPC_EMB_NADDR16; break;
1493 case BFD_RELOC_PPC_EMB_NADDR16_LO: r = R_PPC_EMB_NADDR16_LO; break;
1494 case BFD_RELOC_PPC_EMB_NADDR16_HI: r = R_PPC_EMB_NADDR16_HI; break;
1495 case BFD_RELOC_PPC_EMB_NADDR16_HA: r = R_PPC_EMB_NADDR16_HA; break;
1496 case BFD_RELOC_PPC_EMB_SDAI16: r = R_PPC_EMB_SDAI16; break;
1497 case BFD_RELOC_PPC_EMB_SDA2I16: r = R_PPC_EMB_SDA2I16; break;
1498 case BFD_RELOC_PPC_EMB_SDA2REL: r = R_PPC_EMB_SDA2REL; break;
1499 case BFD_RELOC_PPC_EMB_SDA21: r = R_PPC_EMB_SDA21; break;
1500 case BFD_RELOC_PPC_EMB_MRKREF: r = R_PPC_EMB_MRKREF; break;
1501 case BFD_RELOC_PPC_EMB_RELSEC16: r = R_PPC_EMB_RELSEC16; break;
1502 case BFD_RELOC_PPC_EMB_RELST_LO: r = R_PPC_EMB_RELST_LO; break;
1503 case BFD_RELOC_PPC_EMB_RELST_HI: r = R_PPC_EMB_RELST_HI; break;
1504 case BFD_RELOC_PPC_EMB_RELST_HA: r = R_PPC_EMB_RELST_HA; break;
1505 case BFD_RELOC_PPC_EMB_BIT_FLD: r = R_PPC_EMB_BIT_FLD; break;
1506 case BFD_RELOC_PPC_EMB_RELSDA: r = R_PPC_EMB_RELSDA; break;
1507 case BFD_RELOC_16_PCREL: r = R_PPC_REL16; break;
1508 case BFD_RELOC_LO16_PCREL: r = R_PPC_REL16_LO; break;
1509 case BFD_RELOC_HI16_PCREL: r = R_PPC_REL16_HI; break;
1510 case BFD_RELOC_HI16_S_PCREL: r = R_PPC_REL16_HA; break;
1511 case BFD_RELOC_VTABLE_INHERIT: r = R_PPC_GNU_VTINHERIT; break;
1512 case BFD_RELOC_VTABLE_ENTRY: r = R_PPC_GNU_VTENTRY; break;
1513 }
1514
1515 return ppc_elf_howto_table[r];
1516 };
1517
1518 /* Set the howto pointer for a PowerPC ELF reloc. */
1519
1520 static void
1521 ppc_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED,
1522 arelent *cache_ptr,
1523 Elf_Internal_Rela *dst)
1524 {
1525 /* Initialize howto table if not already done. */
1526 if (!ppc_elf_howto_table[R_PPC_ADDR32])
1527 ppc_elf_howto_init ();
1528
1529 BFD_ASSERT (ELF32_R_TYPE (dst->r_info) < (unsigned int) R_PPC_max);
1530 cache_ptr->howto = ppc_elf_howto_table[ELF32_R_TYPE (dst->r_info)];
1531 }
1532
1533 /* Handle the R_PPC_ADDR16_HA and R_PPC_REL16_HA relocs. */
1534
1535 static bfd_reloc_status_type
1536 ppc_elf_addr16_ha_reloc (bfd *abfd ATTRIBUTE_UNUSED,
1537 arelent *reloc_entry,
1538 asymbol *symbol,
1539 void *data ATTRIBUTE_UNUSED,
1540 asection *input_section,
1541 bfd *output_bfd,
1542 char **error_message ATTRIBUTE_UNUSED)
1543 {
1544 bfd_vma relocation;
1545
1546 if (output_bfd != NULL)
1547 {
1548 reloc_entry->address += input_section->output_offset;
1549 return bfd_reloc_ok;
1550 }
1551
1552 if (reloc_entry->address > bfd_get_section_limit (abfd, input_section))
1553 return bfd_reloc_outofrange;
1554
1555 if (bfd_is_com_section (symbol->section))
1556 relocation = 0;
1557 else
1558 relocation = symbol->value;
1559
1560 relocation += symbol->section->output_section->vma;
1561 relocation += symbol->section->output_offset;
1562 relocation += reloc_entry->addend;
1563 if (reloc_entry->howto->pc_relative)
1564 relocation -= reloc_entry->address;
1565
1566 reloc_entry->addend += (relocation & 0x8000) << 1;
1567
1568 return bfd_reloc_continue;
1569 }
1570
1571 static bfd_reloc_status_type
1572 ppc_elf_unhandled_reloc (bfd *abfd,
1573 arelent *reloc_entry,
1574 asymbol *symbol,
1575 void *data,
1576 asection *input_section,
1577 bfd *output_bfd,
1578 char **error_message)
1579 {
1580 /* If this is a relocatable link (output_bfd test tells us), just
1581 call the generic function. Any adjustment will be done at final
1582 link time. */
1583 if (output_bfd != NULL)
1584 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
1585 input_section, output_bfd, error_message);
1586
1587 if (error_message != NULL)
1588 {
1589 static char buf[60];
1590 sprintf (buf, _("generic linker can't handle %s"),
1591 reloc_entry->howto->name);
1592 *error_message = buf;
1593 }
1594 return bfd_reloc_dangerous;
1595 }
1596 \f
1597 /* Sections created by the linker. */
1598
1599 typedef struct elf_linker_section
1600 {
1601 /* Pointer to the bfd section. */
1602 asection *section;
1603 /* Section name. */
1604 const char *name;
1605 /* Associated bss section name. */
1606 const char *bss_name;
1607 /* Associated symbol name. */
1608 const char *sym_name;
1609 /* Value of symbol. */
1610 bfd_vma sym_val;
1611 } elf_linker_section_t;
1612
1613 /* Linked list of allocated pointer entries. This hangs off of the
1614 symbol lists, and provides allows us to return different pointers,
1615 based on different addend's. */
1616
1617 typedef struct elf_linker_section_pointers
1618 {
1619 /* next allocated pointer for this symbol */
1620 struct elf_linker_section_pointers *next;
1621 /* offset of pointer from beginning of section */
1622 bfd_vma offset;
1623 /* addend used */
1624 bfd_vma addend;
1625 /* which linker section this is */
1626 elf_linker_section_t *lsect;
1627 } elf_linker_section_pointers_t;
1628
1629 struct ppc_elf_obj_tdata
1630 {
1631 struct elf_obj_tdata elf;
1632
1633 /* A mapping from local symbols to offsets into the various linker
1634 sections added. This is index by the symbol index. */
1635 elf_linker_section_pointers_t **linker_section_pointers;
1636 };
1637
1638 #define ppc_elf_tdata(bfd) \
1639 ((struct ppc_elf_obj_tdata *) (bfd)->tdata.any)
1640
1641 #define elf_local_ptr_offsets(bfd) \
1642 (ppc_elf_tdata (bfd)->linker_section_pointers)
1643
1644 /* Override the generic function because we store some extras. */
1645
1646 static bfd_boolean
1647 ppc_elf_mkobject (bfd *abfd)
1648 {
1649 bfd_size_type amt = sizeof (struct ppc_elf_obj_tdata);
1650 abfd->tdata.any = bfd_zalloc (abfd, amt);
1651 if (abfd->tdata.any == NULL)
1652 return FALSE;
1653 return TRUE;
1654 }
1655
1656 /* Fix bad default arch selected for a 32 bit input bfd when the
1657 default is 64 bit. */
1658
1659 static bfd_boolean
1660 ppc_elf_object_p (bfd *abfd)
1661 {
1662 if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 64)
1663 {
1664 Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd);
1665
1666 if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS32)
1667 {
1668 /* Relies on arch after 64 bit default being 32 bit default. */
1669 abfd->arch_info = abfd->arch_info->next;
1670 BFD_ASSERT (abfd->arch_info->bits_per_word == 32);
1671 }
1672 }
1673 return TRUE;
1674 }
1675
1676 /* Function to set whether a module needs the -mrelocatable bit set. */
1677
1678 static bfd_boolean
1679 ppc_elf_set_private_flags (bfd *abfd, flagword flags)
1680 {
1681 BFD_ASSERT (!elf_flags_init (abfd)
1682 || elf_elfheader (abfd)->e_flags == flags);
1683
1684 elf_elfheader (abfd)->e_flags = flags;
1685 elf_flags_init (abfd) = TRUE;
1686 return TRUE;
1687 }
1688
1689 /* Support for core dump NOTE sections. */
1690
1691 static bfd_boolean
1692 ppc_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
1693 {
1694 int offset;
1695 unsigned int size;
1696
1697 switch (note->descsz)
1698 {
1699 default:
1700 return FALSE;
1701
1702 case 268: /* Linux/PPC. */
1703 /* pr_cursig */
1704 elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
1705
1706 /* pr_pid */
1707 elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 24);
1708
1709 /* pr_reg */
1710 offset = 72;
1711 size = 192;
1712
1713 break;
1714 }
1715
1716 /* Make a ".reg/999" section. */
1717 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
1718 size, note->descpos + offset);
1719 }
1720
1721 static bfd_boolean
1722 ppc_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
1723 {
1724 switch (note->descsz)
1725 {
1726 default:
1727 return FALSE;
1728
1729 case 128: /* Linux/PPC elf_prpsinfo. */
1730 elf_tdata (abfd)->core_program
1731 = _bfd_elfcore_strndup (abfd, note->descdata + 32, 16);
1732 elf_tdata (abfd)->core_command
1733 = _bfd_elfcore_strndup (abfd, note->descdata + 48, 80);
1734 }
1735
1736 /* Note that for some reason, a spurious space is tacked
1737 onto the end of the args in some (at least one anyway)
1738 implementations, so strip it off if it exists. */
1739
1740 {
1741 char *command = elf_tdata (abfd)->core_command;
1742 int n = strlen (command);
1743
1744 if (0 < n && command[n - 1] == ' ')
1745 command[n - 1] = '\0';
1746 }
1747
1748 return TRUE;
1749 }
1750
1751 /* Return address for Ith PLT stub in section PLT, for relocation REL
1752 or (bfd_vma) -1 if it should not be included. */
1753
1754 static bfd_vma
1755 ppc_elf_plt_sym_val (bfd_vma i ATTRIBUTE_UNUSED,
1756 const asection *plt ATTRIBUTE_UNUSED,
1757 const arelent *rel)
1758 {
1759 return rel->address;
1760 }
1761
1762 /* Handle a PowerPC specific section when reading an object file. This
1763 is called when bfd_section_from_shdr finds a section with an unknown
1764 type. */
1765
1766 static bfd_boolean
1767 ppc_elf_section_from_shdr (bfd *abfd,
1768 Elf_Internal_Shdr *hdr,
1769 const char *name,
1770 int shindex)
1771 {
1772 asection *newsect;
1773 flagword flags;
1774
1775 if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
1776 return FALSE;
1777
1778 newsect = hdr->bfd_section;
1779 flags = bfd_get_section_flags (abfd, newsect);
1780 if (hdr->sh_flags & SHF_EXCLUDE)
1781 flags |= SEC_EXCLUDE;
1782
1783 if (hdr->sh_type == SHT_ORDERED)
1784 flags |= SEC_SORT_ENTRIES;
1785
1786 bfd_set_section_flags (abfd, newsect, flags);
1787 return TRUE;
1788 }
1789
1790 /* Set up any other section flags and such that may be necessary. */
1791
1792 static bfd_boolean
1793 ppc_elf_fake_sections (bfd *abfd ATTRIBUTE_UNUSED,
1794 Elf_Internal_Shdr *shdr,
1795 asection *asect)
1796 {
1797 if ((asect->flags & SEC_EXCLUDE) != 0)
1798 shdr->sh_flags |= SHF_EXCLUDE;
1799
1800 if ((asect->flags & SEC_SORT_ENTRIES) != 0)
1801 shdr->sh_type = SHT_ORDERED;
1802
1803 return TRUE;
1804 }
1805
1806 /* If we have .sbss2 or .PPC.EMB.sbss0 output sections, we
1807 need to bump up the number of section headers. */
1808
1809 static int
1810 ppc_elf_additional_program_headers (bfd *abfd)
1811 {
1812 asection *s;
1813 int ret = 0;
1814
1815 s = bfd_get_section_by_name (abfd, ".sbss2");
1816 if (s != NULL && (s->flags & SEC_ALLOC) != 0)
1817 ++ret;
1818
1819 s = bfd_get_section_by_name (abfd, ".PPC.EMB.sbss0");
1820 if (s != NULL && (s->flags & SEC_ALLOC) != 0)
1821 ++ret;
1822
1823 return ret;
1824 }
1825
1826 /* Add extra PPC sections -- Note, for now, make .sbss2 and
1827 .PPC.EMB.sbss0 a normal section, and not a bss section so
1828 that the linker doesn't crater when trying to make more than
1829 2 sections. */
1830
1831 static struct bfd_elf_special_section const
1832 ppc_special_sections_p[] =
1833 {
1834 { ".plt", 4, 0, SHT_NOBITS, SHF_ALLOC + SHF_EXECINSTR },
1835 { NULL, 0, 0, 0, 0 }
1836 };
1837
1838 static struct bfd_elf_special_section const
1839 ppc_special_sections_s[] =
1840 {
1841 { ".sdata", 6, -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
1842 { ".sbss", 5, -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
1843 { ".sdata2", 7, -2, SHT_PROGBITS, SHF_ALLOC },
1844 { ".sbss2", 6, -2, SHT_PROGBITS, SHF_ALLOC },
1845 { NULL, 0, 0, 0, 0 }
1846 };
1847
1848 static struct bfd_elf_special_section const
1849 ppc_special_sections_t[] =
1850 {
1851 { ".tags", 5, 0, SHT_ORDERED, SHF_ALLOC },
1852 { NULL, 0, 0, 0, 0 }
1853 };
1854
1855 static struct bfd_elf_special_section const
1856 ppc_special_sections_other[]=
1857 {
1858 { ".PPC.EMB.apuinfo", 16, 0, SHT_NOTE, 0 },
1859 { ".PPC.EMB.sdata0", 15, 0, SHT_PROGBITS, SHF_ALLOC },
1860 { ".PPC.EMB.sbss0", 14, 0, SHT_PROGBITS, SHF_ALLOC },
1861 { NULL, 0, 0, 0, 0 }
1862 };
1863
1864 static struct bfd_elf_special_section const *
1865 ppc_elf_special_sections[27]=
1866 {
1867 NULL, /* 'a' */
1868 NULL, /* 'b' */
1869 NULL, /* 'c' */
1870 NULL, /* 'd' */
1871 NULL, /* 'e' */
1872 NULL, /* 'f' */
1873 NULL, /* 'g' */
1874 NULL, /* 'h' */
1875 NULL, /* 'i' */
1876 NULL, /* 'j' */
1877 NULL, /* 'k' */
1878 NULL, /* 'l' */
1879 NULL, /* 'm' */
1880 NULL, /* 'n' */
1881 NULL, /* 'o' */
1882 ppc_special_sections_p, /* 'p' */
1883 NULL, /* 'q' */
1884 NULL, /* 'r' */
1885 ppc_special_sections_s, /* 's' */
1886 ppc_special_sections_t, /* 's' */
1887 NULL, /* 'u' */
1888 NULL, /* 'v' */
1889 NULL, /* 'w' */
1890 NULL, /* 'x' */
1891 NULL, /* 'y' */
1892 NULL, /* 'z' */
1893 ppc_special_sections_other, /* other */
1894 };
1895 \f
1896 /* Very simple linked list structure for recording apuinfo values. */
1897 typedef struct apuinfo_list
1898 {
1899 struct apuinfo_list *next;
1900 unsigned long value;
1901 }
1902 apuinfo_list;
1903
1904 static apuinfo_list *head;
1905
1906
1907 static void
1908 apuinfo_list_init (void)
1909 {
1910 head = NULL;
1911 }
1912
1913 static void
1914 apuinfo_list_add (unsigned long value)
1915 {
1916 apuinfo_list *entry = head;
1917
1918 while (entry != NULL)
1919 {
1920 if (entry->value == value)
1921 return;
1922 entry = entry->next;
1923 }
1924
1925 entry = bfd_malloc (sizeof (* entry));
1926 if (entry == NULL)
1927 return;
1928
1929 entry->value = value;
1930 entry->next = head;
1931 head = entry;
1932 }
1933
1934 static unsigned
1935 apuinfo_list_length (void)
1936 {
1937 apuinfo_list *entry;
1938 unsigned long count;
1939
1940 for (entry = head, count = 0;
1941 entry;
1942 entry = entry->next)
1943 ++ count;
1944
1945 return count;
1946 }
1947
1948 static inline unsigned long
1949 apuinfo_list_element (unsigned long number)
1950 {
1951 apuinfo_list * entry;
1952
1953 for (entry = head;
1954 entry && number --;
1955 entry = entry->next)
1956 ;
1957
1958 return entry ? entry->value : 0;
1959 }
1960
1961 static void
1962 apuinfo_list_finish (void)
1963 {
1964 apuinfo_list *entry;
1965
1966 for (entry = head; entry;)
1967 {
1968 apuinfo_list *next = entry->next;
1969 free (entry);
1970 entry = next;
1971 }
1972
1973 head = NULL;
1974 }
1975
1976 #define APUINFO_SECTION_NAME ".PPC.EMB.apuinfo"
1977 #define APUINFO_LABEL "APUinfo"
1978
1979 /* Scan the input BFDs and create a linked list of
1980 the APUinfo values that will need to be emitted. */
1981
1982 static void
1983 ppc_elf_begin_write_processing (bfd *abfd, struct bfd_link_info *link_info)
1984 {
1985 bfd *ibfd;
1986 asection *asec;
1987 char *buffer;
1988 unsigned num_input_sections;
1989 bfd_size_type output_section_size;
1990 unsigned i;
1991 unsigned num_entries;
1992 unsigned long offset;
1993 unsigned long length;
1994 const char *error_message = NULL;
1995
1996 if (link_info == NULL)
1997 return;
1998
1999 /* Scan the input bfds, looking for apuinfo sections. */
2000 num_input_sections = 0;
2001 output_section_size = 0;
2002
2003 for (ibfd = link_info->input_bfds; ibfd; ibfd = ibfd->link_next)
2004 {
2005 asec = bfd_get_section_by_name (ibfd, APUINFO_SECTION_NAME);
2006 if (asec)
2007 {
2008 ++ num_input_sections;
2009 output_section_size += asec->size;
2010 }
2011 }
2012
2013 /* We need at least one input sections
2014 in order to make merging worthwhile. */
2015 if (num_input_sections < 1)
2016 return;
2017
2018 /* Just make sure that the output section exists as well. */
2019 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2020 if (asec == NULL)
2021 return;
2022
2023 /* Allocate a buffer for the contents of the input sections. */
2024 buffer = bfd_malloc (output_section_size);
2025 if (buffer == NULL)
2026 return;
2027
2028 offset = 0;
2029 apuinfo_list_init ();
2030
2031 /* Read in the input sections contents. */
2032 for (ibfd = link_info->input_bfds; ibfd; ibfd = ibfd->link_next)
2033 {
2034 unsigned long datum;
2035 char *ptr;
2036
2037 asec = bfd_get_section_by_name (ibfd, APUINFO_SECTION_NAME);
2038 if (asec == NULL)
2039 continue;
2040
2041 length = asec->size;
2042 if (length < 24)
2043 {
2044 error_message = _("corrupt or empty %s section in %B");
2045 goto fail;
2046 }
2047
2048 if (bfd_seek (ibfd, asec->filepos, SEEK_SET) != 0
2049 || (bfd_bread (buffer + offset, length, ibfd) != length))
2050 {
2051 error_message = _("unable to read in %s section from %B");
2052 goto fail;
2053 }
2054
2055 /* Process the contents of the section. */
2056 ptr = buffer + offset;
2057 error_message = _("corrupt %s section in %B");
2058
2059 /* Verify the contents of the header. Note - we have to
2060 extract the values this way in order to allow for a
2061 host whose endian-ness is different from the target. */
2062 datum = bfd_get_32 (ibfd, ptr);
2063 if (datum != sizeof APUINFO_LABEL)
2064 goto fail;
2065
2066 datum = bfd_get_32 (ibfd, ptr + 8);
2067 if (datum != 0x2)
2068 goto fail;
2069
2070 if (strcmp (ptr + 12, APUINFO_LABEL) != 0)
2071 goto fail;
2072
2073 /* Get the number of bytes used for apuinfo entries. */
2074 datum = bfd_get_32 (ibfd, ptr + 4);
2075 if (datum + 20 != length)
2076 goto fail;
2077
2078 /* Make sure that we do not run off the end of the section. */
2079 if (offset + length > output_section_size)
2080 goto fail;
2081
2082 /* Scan the apuinfo section, building a list of apuinfo numbers. */
2083 for (i = 0; i < datum; i += 4)
2084 apuinfo_list_add (bfd_get_32 (ibfd, ptr + 20 + i));
2085
2086 /* Update the offset. */
2087 offset += length;
2088 }
2089
2090 error_message = NULL;
2091
2092 /* Compute the size of the output section. */
2093 num_entries = apuinfo_list_length ();
2094 output_section_size = 20 + num_entries * 4;
2095
2096 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2097
2098 if (! bfd_set_section_size (abfd, asec, output_section_size))
2099 ibfd = abfd,
2100 error_message = _("warning: unable to set size of %s section in %B");
2101
2102 fail:
2103 free (buffer);
2104
2105 if (error_message)
2106 (*_bfd_error_handler) (error_message, ibfd, APUINFO_SECTION_NAME);
2107 }
2108
2109 /* Prevent the output section from accumulating the input sections'
2110 contents. We have already stored this in our linked list structure. */
2111
2112 static bfd_boolean
2113 ppc_elf_write_section (bfd *abfd ATTRIBUTE_UNUSED,
2114 asection *asec,
2115 bfd_byte *contents ATTRIBUTE_UNUSED)
2116 {
2117 return (apuinfo_list_length ()
2118 && strcmp (asec->name, APUINFO_SECTION_NAME) == 0);
2119 }
2120
2121 /* Finally we can generate the output section. */
2122
2123 static void
2124 ppc_elf_final_write_processing (bfd *abfd, bfd_boolean linker ATTRIBUTE_UNUSED)
2125 {
2126 bfd_byte *buffer;
2127 asection *asec;
2128 unsigned i;
2129 unsigned num_entries;
2130 bfd_size_type length;
2131
2132 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2133 if (asec == NULL)
2134 return;
2135
2136 if (apuinfo_list_length () == 0)
2137 return;
2138
2139 length = asec->size;
2140 if (length < 20)
2141 return;
2142
2143 buffer = bfd_malloc (length);
2144 if (buffer == NULL)
2145 {
2146 (*_bfd_error_handler)
2147 (_("failed to allocate space for new APUinfo section."));
2148 return;
2149 }
2150
2151 /* Create the apuinfo header. */
2152 num_entries = apuinfo_list_length ();
2153 bfd_put_32 (abfd, sizeof APUINFO_LABEL, buffer);
2154 bfd_put_32 (abfd, num_entries * 4, buffer + 4);
2155 bfd_put_32 (abfd, 0x2, buffer + 8);
2156 strcpy ((char *) buffer + 12, APUINFO_LABEL);
2157
2158 length = 20;
2159 for (i = 0; i < num_entries; i++)
2160 {
2161 bfd_put_32 (abfd, apuinfo_list_element (i), buffer + length);
2162 length += 4;
2163 }
2164
2165 if (length != asec->size)
2166 (*_bfd_error_handler) (_("failed to compute new APUinfo section."));
2167
2168 if (! bfd_set_section_contents (abfd, asec, buffer, (file_ptr) 0, length))
2169 (*_bfd_error_handler) (_("failed to install new APUinfo section."));
2170
2171 free (buffer);
2172
2173 apuinfo_list_finish ();
2174 }
2175 \f
2176 /* The following functions are specific to the ELF linker, while
2177 functions above are used generally. They appear in this file more
2178 or less in the order in which they are called. eg.
2179 ppc_elf_check_relocs is called early in the link process,
2180 ppc_elf_finish_dynamic_sections is one of the last functions
2181 called. */
2182
2183 /* The PPC linker needs to keep track of the number of relocs that it
2184 decides to copy as dynamic relocs in check_relocs for each symbol.
2185 This is so that it can later discard them if they are found to be
2186 unnecessary. We store the information in a field extending the
2187 regular ELF linker hash table. */
2188
2189 struct ppc_elf_dyn_relocs
2190 {
2191 struct ppc_elf_dyn_relocs *next;
2192
2193 /* The input section of the reloc. */
2194 asection *sec;
2195
2196 /* Total number of relocs copied for the input section. */
2197 bfd_size_type count;
2198
2199 /* Number of pc-relative relocs copied for the input section. */
2200 bfd_size_type pc_count;
2201 };
2202
2203 /* Track PLT entries needed for a given symbol. We might need more
2204 than one glink entry per symbol. */
2205 struct plt_entry
2206 {
2207 struct plt_entry *next;
2208
2209 /* -fPIC uses multiple GOT sections, one per file, called ".got2".
2210 This field stores the offset into .got2 used to initialise the
2211 GOT pointer reg. It will always be at least 32768 (and for
2212 current gcc this is the only offset used). */
2213 bfd_vma addend;
2214
2215 /* The .got2 section. */
2216 asection *sec;
2217
2218 /* PLT refcount or offset. */
2219 union
2220 {
2221 bfd_signed_vma refcount;
2222 bfd_vma offset;
2223 } plt;
2224
2225 /* .glink stub offset. */
2226 bfd_vma glink_offset;
2227 };
2228
2229 /* Of those relocs that might be copied as dynamic relocs, this macro
2230 selects those that must be copied when linking a shared library,
2231 even when the symbol is local. */
2232
2233 #define MUST_BE_DYN_RELOC(RTYPE) \
2234 ((RTYPE) != R_PPC_REL24 \
2235 && (RTYPE) != R_PPC_REL14 \
2236 && (RTYPE) != R_PPC_REL14_BRTAKEN \
2237 && (RTYPE) != R_PPC_REL14_BRNTAKEN \
2238 && (RTYPE) != R_PPC_REL32)
2239
2240 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
2241 copying dynamic variables from a shared lib into an app's dynbss
2242 section, and instead use a dynamic relocation to point into the
2243 shared lib. */
2244 #define ELIMINATE_COPY_RELOCS 1
2245
2246 /* PPC ELF linker hash entry. */
2247
2248 struct ppc_elf_link_hash_entry
2249 {
2250 struct elf_link_hash_entry elf;
2251
2252 /* If this symbol is used in the linker created sections, the processor
2253 specific backend uses this field to map the field into the offset
2254 from the beginning of the section. */
2255 elf_linker_section_pointers_t *linker_section_pointer;
2256
2257 /* Track dynamic relocs copied for this symbol. */
2258 struct ppc_elf_dyn_relocs *dyn_relocs;
2259
2260 /* Contexts in which symbol is used in the GOT (or TOC).
2261 TLS_GD .. TLS_TLS bits are or'd into the mask as the
2262 corresponding relocs are encountered during check_relocs.
2263 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
2264 indicate the corresponding GOT entry type is not needed. */
2265 #define TLS_GD 1 /* GD reloc. */
2266 #define TLS_LD 2 /* LD reloc. */
2267 #define TLS_TPREL 4 /* TPREL reloc, => IE. */
2268 #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
2269 #define TLS_TLS 16 /* Any TLS reloc. */
2270 #define TLS_TPRELGD 32 /* TPREL reloc resulting from GD->IE. */
2271 char tls_mask;
2272
2273 /* Nonzero if we have seen a small data relocation referring to this
2274 symbol. */
2275 unsigned char has_sda_refs;
2276 };
2277
2278 #define ppc_elf_hash_entry(ent) ((struct ppc_elf_link_hash_entry *) (ent))
2279
2280 /* PPC ELF linker hash table. */
2281
2282 struct ppc_elf_link_hash_table
2283 {
2284 struct elf_link_hash_table elf;
2285
2286 /* Short-cuts to get to dynamic linker sections. */
2287 asection *got;
2288 asection *relgot;
2289 asection *glink;
2290 asection *plt;
2291 asection *relplt;
2292 asection *dynbss;
2293 asection *relbss;
2294 asection *dynsbss;
2295 asection *relsbss;
2296 elf_linker_section_t sdata[2];
2297 asection *sbss;
2298
2299 /* Shortcut to .__tls_get_addr. */
2300 struct elf_link_hash_entry *tls_get_addr;
2301
2302 /* TLS local dynamic got entry handling. */
2303 union {
2304 bfd_signed_vma refcount;
2305 bfd_vma offset;
2306 } tlsld_got;
2307
2308 /* Offset of PltResolve function in glink. */
2309 bfd_vma glink_pltresolve;
2310
2311 /* Size of reserved GOT entries. */
2312 unsigned int got_header_size;
2313 /* Non-zero if allocating the header left a gap. */
2314 unsigned int got_gap;
2315
2316 /* Whether to use new plt/got layout or not. */
2317 unsigned int new_plt:1;
2318 unsigned int old_plt:1;
2319
2320 /* Small local sym to section mapping cache. */
2321 struct sym_sec_cache sym_sec;
2322 };
2323
2324 /* Get the PPC ELF linker hash table from a link_info structure. */
2325
2326 #define ppc_elf_hash_table(p) \
2327 ((struct ppc_elf_link_hash_table *) (p)->hash)
2328
2329 /* Create an entry in a PPC ELF linker hash table. */
2330
2331 static struct bfd_hash_entry *
2332 ppc_elf_link_hash_newfunc (struct bfd_hash_entry *entry,
2333 struct bfd_hash_table *table,
2334 const char *string)
2335 {
2336 /* Allocate the structure if it has not already been allocated by a
2337 subclass. */
2338 if (entry == NULL)
2339 {
2340 entry = bfd_hash_allocate (table,
2341 sizeof (struct ppc_elf_link_hash_entry));
2342 if (entry == NULL)
2343 return entry;
2344 }
2345
2346 /* Call the allocation method of the superclass. */
2347 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
2348 if (entry != NULL)
2349 {
2350 ppc_elf_hash_entry (entry)->linker_section_pointer = NULL;
2351 ppc_elf_hash_entry (entry)->dyn_relocs = NULL;
2352 ppc_elf_hash_entry (entry)->tls_mask = 0;
2353 }
2354
2355 return entry;
2356 }
2357
2358 /* Create a PPC ELF linker hash table. */
2359
2360 static struct bfd_link_hash_table *
2361 ppc_elf_link_hash_table_create (bfd *abfd)
2362 {
2363 struct ppc_elf_link_hash_table *ret;
2364
2365 ret = bfd_zmalloc (sizeof (struct ppc_elf_link_hash_table));
2366 if (ret == NULL)
2367 return NULL;
2368
2369 if (! _bfd_elf_link_hash_table_init (&ret->elf, abfd,
2370 ppc_elf_link_hash_newfunc))
2371 {
2372 free (ret);
2373 return NULL;
2374 }
2375
2376 ret->elf.init_plt_refcount.refcount = 0;
2377 ret->elf.init_plt_refcount.glist = NULL;
2378 ret->elf.init_plt_offset.offset = 0;
2379 ret->elf.init_plt_offset.glist = NULL;
2380
2381 ret->sdata[0].name = ".sdata";
2382 ret->sdata[0].sym_name = "_SDA_BASE_";
2383 ret->sdata[0].bss_name = ".sbss";
2384
2385 ret->sdata[1].name = ".sdata2";
2386 ret->sdata[1].sym_name = "_SDA2_BASE_";
2387 ret->sdata[1].bss_name = ".sbss2";
2388
2389 return &ret->elf.root;
2390 }
2391
2392 /* The powerpc .got has a blrl instruction in it. Mark it executable. */
2393
2394 static bfd_boolean
2395 ppc_elf_create_got (bfd *abfd, struct bfd_link_info *info)
2396 {
2397 struct ppc_elf_link_hash_table *htab;
2398 asection *s;
2399 flagword flags;
2400
2401 if (!_bfd_elf_create_got_section (abfd, info))
2402 return FALSE;
2403
2404 htab = ppc_elf_hash_table (info);
2405 htab->got = s = bfd_get_section_by_name (abfd, ".got");
2406 if (s == NULL)
2407 abort ();
2408
2409 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS | SEC_IN_MEMORY
2410 | SEC_LINKER_CREATED);
2411 if (!bfd_set_section_flags (abfd, s, flags))
2412 return FALSE;
2413
2414 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
2415 | SEC_LINKER_CREATED | SEC_READONLY);
2416 htab->relgot = bfd_make_section_with_flags (abfd, ".rela.got", flags);
2417 if (!htab->relgot
2418 || ! bfd_set_section_alignment (abfd, htab->relgot, 2))
2419 return FALSE;
2420
2421 return TRUE;
2422 }
2423
2424 /* We have to create .dynsbss and .rela.sbss here so that they get mapped
2425 to output sections (just like _bfd_elf_create_dynamic_sections has
2426 to create .dynbss and .rela.bss). */
2427
2428 static bfd_boolean
2429 ppc_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
2430 {
2431 struct ppc_elf_link_hash_table *htab;
2432 asection *s;
2433 flagword flags;
2434
2435 htab = ppc_elf_hash_table (info);
2436
2437 if (htab->got == NULL
2438 && !ppc_elf_create_got (abfd, info))
2439 return FALSE;
2440
2441 if (!_bfd_elf_create_dynamic_sections (abfd, info))
2442 return FALSE;
2443
2444 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
2445 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
2446
2447 s = bfd_make_section_anyway_with_flags (abfd, ".glink", flags | SEC_CODE);
2448 htab->glink = s;
2449 if (s == NULL
2450 || !bfd_set_section_alignment (abfd, s, 4))
2451 return FALSE;
2452
2453 htab->dynbss = bfd_get_section_by_name (abfd, ".dynbss");
2454 s = bfd_make_section_with_flags (abfd, ".dynsbss",
2455 SEC_ALLOC | SEC_LINKER_CREATED);
2456 htab->dynsbss = s;
2457 if (s == NULL)
2458 return FALSE;
2459
2460 if (! info->shared)
2461 {
2462 htab->relbss = bfd_get_section_by_name (abfd, ".rela.bss");
2463 s = bfd_make_section_with_flags (abfd, ".rela.sbss", flags);
2464 htab->relsbss = s;
2465 if (s == NULL
2466 || ! bfd_set_section_alignment (abfd, s, 2))
2467 return FALSE;
2468 }
2469
2470 htab->relplt = bfd_get_section_by_name (abfd, ".rela.plt");
2471 htab->plt = s = bfd_get_section_by_name (abfd, ".plt");
2472 if (s == NULL)
2473 abort ();
2474
2475 flags = SEC_ALLOC | SEC_CODE | SEC_LINKER_CREATED;
2476 return bfd_set_section_flags (abfd, s, flags);
2477 }
2478
2479 /* Copy the extra info we tack onto an elf_link_hash_entry. */
2480
2481 static void
2482 ppc_elf_copy_indirect_symbol (const struct elf_backend_data *bed ATTRIBUTE_UNUSED,
2483 struct elf_link_hash_entry *dir,
2484 struct elf_link_hash_entry *ind)
2485 {
2486 struct ppc_elf_link_hash_entry *edir, *eind;
2487 bfd_signed_vma tmp;
2488
2489 edir = (struct ppc_elf_link_hash_entry *) dir;
2490 eind = (struct ppc_elf_link_hash_entry *) ind;
2491
2492 if (eind->dyn_relocs != NULL)
2493 {
2494 if (edir->dyn_relocs != NULL)
2495 {
2496 struct ppc_elf_dyn_relocs **pp;
2497 struct ppc_elf_dyn_relocs *p;
2498
2499 if (ind->root.type == bfd_link_hash_indirect)
2500 abort ();
2501
2502 /* Add reloc counts against the weak sym to the strong sym
2503 list. Merge any entries against the same section. */
2504 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
2505 {
2506 struct ppc_elf_dyn_relocs *q;
2507
2508 for (q = edir->dyn_relocs; q != NULL; q = q->next)
2509 if (q->sec == p->sec)
2510 {
2511 q->pc_count += p->pc_count;
2512 q->count += p->count;
2513 *pp = p->next;
2514 break;
2515 }
2516 if (q == NULL)
2517 pp = &p->next;
2518 }
2519 *pp = edir->dyn_relocs;
2520 }
2521
2522 edir->dyn_relocs = eind->dyn_relocs;
2523 eind->dyn_relocs = NULL;
2524 }
2525
2526 edir->tls_mask |= eind->tls_mask;
2527 edir->has_sda_refs |= eind->has_sda_refs;
2528
2529 /* If called to transfer flags for a weakdef during processing
2530 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
2531 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
2532 if (!(ELIMINATE_COPY_RELOCS
2533 && eind->elf.root.type != bfd_link_hash_indirect
2534 && edir->elf.dynamic_adjusted))
2535 edir->elf.non_got_ref |= eind->elf.non_got_ref;
2536
2537 edir->elf.ref_dynamic |= eind->elf.ref_dynamic;
2538 edir->elf.ref_regular |= eind->elf.ref_regular;
2539 edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak;
2540 edir->elf.needs_plt |= eind->elf.needs_plt;
2541
2542 /* If we were called to copy over info for a weak sym, that's all. */
2543 if (eind->elf.root.type != bfd_link_hash_indirect)
2544 return;
2545
2546 /* Copy over the GOT refcount entries that we may have already seen to
2547 the symbol which just became indirect. */
2548 tmp = edir->elf.got.refcount;
2549 if (tmp < 1)
2550 {
2551 edir->elf.got.refcount = eind->elf.got.refcount;
2552 eind->elf.got.refcount = tmp;
2553 }
2554 else
2555 BFD_ASSERT (eind->elf.got.refcount < 1);
2556
2557 /* And plt entries. */
2558 if (eind->elf.plt.plist != NULL)
2559 {
2560 if (edir->elf.plt.plist != NULL)
2561 {
2562 struct plt_entry **entp;
2563 struct plt_entry *ent;
2564
2565 for (entp = &eind->elf.plt.plist; (ent = *entp) != NULL; )
2566 {
2567 struct plt_entry *dent;
2568
2569 for (dent = edir->elf.plt.plist; dent != NULL; dent = dent->next)
2570 if (dent->sec == ent->sec && dent->addend == ent->addend)
2571 {
2572 dent->plt.refcount += ent->plt.refcount;
2573 *entp = ent->next;
2574 break;
2575 }
2576 if (dent == NULL)
2577 entp = &ent->next;
2578 }
2579 *entp = edir->elf.plt.plist;
2580 }
2581
2582 edir->elf.plt.plist = eind->elf.plt.plist;
2583 eind->elf.plt.plist = NULL;
2584 }
2585
2586 if (edir->elf.dynindx == -1)
2587 {
2588 edir->elf.dynindx = eind->elf.dynindx;
2589 edir->elf.dynstr_index = eind->elf.dynstr_index;
2590 eind->elf.dynindx = -1;
2591 eind->elf.dynstr_index = 0;
2592 }
2593 else
2594 BFD_ASSERT (eind->elf.dynindx == -1);
2595 }
2596
2597 /* Return 1 if target is one of ours. */
2598
2599 static bfd_boolean
2600 is_ppc_elf_target (const struct bfd_target *targ)
2601 {
2602 extern const bfd_target bfd_elf32_powerpc_vec;
2603 extern const bfd_target bfd_elf32_powerpcle_vec;
2604
2605 return targ == &bfd_elf32_powerpc_vec || targ == &bfd_elf32_powerpcle_vec;
2606 }
2607
2608 /* Hook called by the linker routine which adds symbols from an object
2609 file. We use it to put .comm items in .sbss, and not .bss. */
2610
2611 static bfd_boolean
2612 ppc_elf_add_symbol_hook (bfd *abfd,
2613 struct bfd_link_info *info,
2614 Elf_Internal_Sym *sym,
2615 const char **namep ATTRIBUTE_UNUSED,
2616 flagword *flagsp ATTRIBUTE_UNUSED,
2617 asection **secp,
2618 bfd_vma *valp)
2619 {
2620 if (sym->st_shndx == SHN_COMMON
2621 && !info->relocatable
2622 && sym->st_size <= elf_gp_size (abfd)
2623 && is_ppc_elf_target (info->hash->creator))
2624 {
2625 /* Common symbols less than or equal to -G nn bytes are automatically
2626 put into .sbss. */
2627 struct ppc_elf_link_hash_table *htab;
2628
2629 htab = ppc_elf_hash_table (info);
2630 if (htab->sbss == NULL)
2631 {
2632 flagword flags = SEC_IS_COMMON | SEC_LINKER_CREATED;
2633
2634 if (!htab->elf.dynobj)
2635 htab->elf.dynobj = abfd;
2636
2637 htab->sbss = bfd_make_section_anyway_with_flags (htab->elf.dynobj,
2638 ".sbss",
2639 flags);
2640 if (htab->sbss == NULL)
2641 return FALSE;
2642 }
2643
2644 *secp = htab->sbss;
2645 *valp = sym->st_size;
2646 }
2647
2648 return TRUE;
2649 }
2650 \f
2651 /* Create a special linker section. */
2652
2653 static bfd_boolean
2654 ppc_elf_create_linker_section (bfd *abfd,
2655 struct bfd_link_info *info,
2656 flagword flags,
2657 elf_linker_section_t *lsect)
2658 {
2659 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
2660 asection *s;
2661
2662 flags |= (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
2663 | SEC_LINKER_CREATED);
2664
2665 /* Record the first bfd that needs the special sections. */
2666 if (!htab->elf.dynobj)
2667 htab->elf.dynobj = abfd;
2668
2669 s = bfd_make_section_anyway_with_flags (htab->elf.dynobj,
2670 lsect->name,
2671 flags);
2672 if (s == NULL
2673 || !bfd_set_section_alignment (htab->elf.dynobj, s, 2))
2674 return FALSE;
2675 lsect->section = s;
2676
2677 return TRUE;
2678 }
2679
2680 /* Find a linker generated pointer with a given addend and type. */
2681
2682 static elf_linker_section_pointers_t *
2683 elf_find_pointer_linker_section
2684 (elf_linker_section_pointers_t *linker_pointers,
2685 bfd_vma addend,
2686 elf_linker_section_t *lsect)
2687 {
2688 for ( ; linker_pointers != NULL; linker_pointers = linker_pointers->next)
2689 if (lsect == linker_pointers->lsect && addend == linker_pointers->addend)
2690 return linker_pointers;
2691
2692 return NULL;
2693 }
2694
2695 /* Allocate a pointer to live in a linker created section. */
2696
2697 static bfd_boolean
2698 elf_create_pointer_linker_section (bfd *abfd,
2699 elf_linker_section_t *lsect,
2700 struct elf_link_hash_entry *h,
2701 const Elf_Internal_Rela *rel)
2702 {
2703 elf_linker_section_pointers_t **ptr_linker_section_ptr = NULL;
2704 elf_linker_section_pointers_t *linker_section_ptr;
2705 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
2706 bfd_size_type amt;
2707
2708 BFD_ASSERT (lsect != NULL);
2709
2710 /* Is this a global symbol? */
2711 if (h != NULL)
2712 {
2713 struct ppc_elf_link_hash_entry *eh;
2714
2715 /* Has this symbol already been allocated? If so, our work is done. */
2716 eh = (struct ppc_elf_link_hash_entry *) h;
2717 if (elf_find_pointer_linker_section (eh->linker_section_pointer,
2718 rel->r_addend,
2719 lsect))
2720 return TRUE;
2721
2722 ptr_linker_section_ptr = &eh->linker_section_pointer;
2723 }
2724 else
2725 {
2726 /* Allocation of a pointer to a local symbol. */
2727 elf_linker_section_pointers_t **ptr = elf_local_ptr_offsets (abfd);
2728
2729 /* Allocate a table to hold the local symbols if first time. */
2730 if (!ptr)
2731 {
2732 unsigned int num_symbols = elf_tdata (abfd)->symtab_hdr.sh_info;
2733
2734 amt = num_symbols;
2735 amt *= sizeof (elf_linker_section_pointers_t *);
2736 ptr = bfd_zalloc (abfd, amt);
2737
2738 if (!ptr)
2739 return FALSE;
2740
2741 elf_local_ptr_offsets (abfd) = ptr;
2742 }
2743
2744 /* Has this symbol already been allocated? If so, our work is done. */
2745 if (elf_find_pointer_linker_section (ptr[r_symndx],
2746 rel->r_addend,
2747 lsect))
2748 return TRUE;
2749
2750 ptr_linker_section_ptr = &ptr[r_symndx];
2751 }
2752
2753 /* Allocate space for a pointer in the linker section, and allocate
2754 a new pointer record from internal memory. */
2755 BFD_ASSERT (ptr_linker_section_ptr != NULL);
2756 amt = sizeof (elf_linker_section_pointers_t);
2757 linker_section_ptr = bfd_alloc (abfd, amt);
2758
2759 if (!linker_section_ptr)
2760 return FALSE;
2761
2762 linker_section_ptr->next = *ptr_linker_section_ptr;
2763 linker_section_ptr->addend = rel->r_addend;
2764 linker_section_ptr->lsect = lsect;
2765 *ptr_linker_section_ptr = linker_section_ptr;
2766
2767 linker_section_ptr->offset = lsect->section->size;
2768 lsect->section->size += 4;
2769
2770 #ifdef DEBUG
2771 fprintf (stderr,
2772 "Create pointer in linker section %s, offset = %ld, section size = %ld\n",
2773 lsect->name, (long) linker_section_ptr->offset,
2774 (long) lsect->section->size);
2775 #endif
2776
2777 return TRUE;
2778 }
2779
2780 static bfd_boolean
2781 update_local_sym_info (bfd *abfd,
2782 Elf_Internal_Shdr *symtab_hdr,
2783 unsigned long r_symndx,
2784 int tls_type)
2785 {
2786 bfd_signed_vma *local_got_refcounts = elf_local_got_refcounts (abfd);
2787 char *local_got_tls_masks;
2788
2789 if (local_got_refcounts == NULL)
2790 {
2791 bfd_size_type size = symtab_hdr->sh_info;
2792
2793 size *= sizeof (*local_got_refcounts) + sizeof (*local_got_tls_masks);
2794 local_got_refcounts = bfd_zalloc (abfd, size);
2795 if (local_got_refcounts == NULL)
2796 return FALSE;
2797 elf_local_got_refcounts (abfd) = local_got_refcounts;
2798 }
2799
2800 local_got_refcounts[r_symndx] += 1;
2801 local_got_tls_masks = (char *) (local_got_refcounts + symtab_hdr->sh_info);
2802 local_got_tls_masks[r_symndx] |= tls_type;
2803 return TRUE;
2804 }
2805
2806 static bfd_boolean
2807 update_plt_info (bfd *abfd, struct elf_link_hash_entry *h,
2808 asection *sec, bfd_vma addend)
2809 {
2810 struct plt_entry *ent;
2811
2812 if (addend < 32768)
2813 sec = NULL;
2814 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
2815 if (ent->sec == sec && ent->addend == addend)
2816 break;
2817 if (ent == NULL)
2818 {
2819 bfd_size_type amt = sizeof (*ent);
2820 ent = bfd_alloc (abfd, amt);
2821 if (ent == NULL)
2822 return FALSE;
2823 ent->next = h->plt.plist;
2824 ent->sec = sec;
2825 ent->addend = addend;
2826 ent->plt.refcount = 0;
2827 h->plt.plist = ent;
2828 }
2829 ent->plt.refcount += 1;
2830 return TRUE;
2831 }
2832
2833 static struct plt_entry *
2834 find_plt_ent (struct elf_link_hash_entry *h, asection *sec, bfd_vma addend)
2835 {
2836 struct plt_entry *ent;
2837
2838 if (addend < 32768)
2839 sec = NULL;
2840 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
2841 if (ent->sec == sec && ent->addend == addend)
2842 break;
2843 return ent;
2844 }
2845
2846 static void
2847 bad_shared_reloc (bfd *abfd, enum elf_ppc_reloc_type r_type)
2848 {
2849 (*_bfd_error_handler)
2850 (_("%B: relocation %s cannot be used when making a shared object"),
2851 abfd,
2852 ppc_elf_howto_table[r_type]->name);
2853 bfd_set_error (bfd_error_bad_value);
2854 }
2855
2856 /* Look through the relocs for a section during the first phase, and
2857 allocate space in the global offset table or procedure linkage
2858 table. */
2859
2860 static bfd_boolean
2861 ppc_elf_check_relocs (bfd *abfd,
2862 struct bfd_link_info *info,
2863 asection *sec,
2864 const Elf_Internal_Rela *relocs)
2865 {
2866 struct ppc_elf_link_hash_table *htab;
2867 Elf_Internal_Shdr *symtab_hdr;
2868 struct elf_link_hash_entry **sym_hashes;
2869 const Elf_Internal_Rela *rel;
2870 const Elf_Internal_Rela *rel_end;
2871 asection *got2, *sreloc;
2872
2873 if (info->relocatable)
2874 return TRUE;
2875
2876 /* Don't do anything special with non-loaded, non-alloced sections.
2877 In particular, any relocs in such sections should not affect GOT
2878 and PLT reference counting (ie. we don't allow them to create GOT
2879 or PLT entries), there's no possibility or desire to optimize TLS
2880 relocs, and there's not much point in propagating relocs to shared
2881 libs that the dynamic linker won't relocate. */
2882 if ((sec->flags & SEC_ALLOC) == 0)
2883 return TRUE;
2884
2885 #ifdef DEBUG
2886 _bfd_error_handler ("ppc_elf_check_relocs called for section %A in %B",
2887 sec, abfd);
2888 #endif
2889
2890 /* Initialize howto table if not already done. */
2891 if (!ppc_elf_howto_table[R_PPC_ADDR32])
2892 ppc_elf_howto_init ();
2893
2894 htab = ppc_elf_hash_table (info);
2895 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
2896 sym_hashes = elf_sym_hashes (abfd);
2897 got2 = bfd_get_section_by_name (abfd, ".got2");
2898 sreloc = NULL;
2899
2900 rel_end = relocs + sec->reloc_count;
2901 for (rel = relocs; rel < rel_end; rel++)
2902 {
2903 unsigned long r_symndx;
2904 enum elf_ppc_reloc_type r_type;
2905 struct elf_link_hash_entry *h;
2906 int tls_type = 0;
2907
2908 r_symndx = ELF32_R_SYM (rel->r_info);
2909 if (r_symndx < symtab_hdr->sh_info)
2910 h = NULL;
2911 else
2912 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
2913
2914 /* If a relocation refers to _GLOBAL_OFFSET_TABLE_, create the .got.
2915 This shows up in particular in an R_PPC_ADDR32 in the eabi
2916 startup code. */
2917 if (h != NULL
2918 && htab->got == NULL
2919 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
2920 {
2921 if (htab->elf.dynobj == NULL)
2922 htab->elf.dynobj = abfd;
2923 if (!ppc_elf_create_got (htab->elf.dynobj, info))
2924 return FALSE;
2925 BFD_ASSERT (h == htab->elf.hgot);
2926 }
2927
2928 r_type = ELF32_R_TYPE (rel->r_info);
2929 switch (r_type)
2930 {
2931 case R_PPC_GOT_TLSLD16:
2932 case R_PPC_GOT_TLSLD16_LO:
2933 case R_PPC_GOT_TLSLD16_HI:
2934 case R_PPC_GOT_TLSLD16_HA:
2935 htab->tlsld_got.refcount += 1;
2936 tls_type = TLS_TLS | TLS_LD;
2937 goto dogottls;
2938
2939 case R_PPC_GOT_TLSGD16:
2940 case R_PPC_GOT_TLSGD16_LO:
2941 case R_PPC_GOT_TLSGD16_HI:
2942 case R_PPC_GOT_TLSGD16_HA:
2943 tls_type = TLS_TLS | TLS_GD;
2944 goto dogottls;
2945
2946 case R_PPC_GOT_TPREL16:
2947 case R_PPC_GOT_TPREL16_LO:
2948 case R_PPC_GOT_TPREL16_HI:
2949 case R_PPC_GOT_TPREL16_HA:
2950 if (info->shared)
2951 info->flags |= DF_STATIC_TLS;
2952 tls_type = TLS_TLS | TLS_TPREL;
2953 goto dogottls;
2954
2955 case R_PPC_GOT_DTPREL16:
2956 case R_PPC_GOT_DTPREL16_LO:
2957 case R_PPC_GOT_DTPREL16_HI:
2958 case R_PPC_GOT_DTPREL16_HA:
2959 tls_type = TLS_TLS | TLS_DTPREL;
2960 dogottls:
2961 sec->has_tls_reloc = 1;
2962 /* Fall thru */
2963
2964 /* GOT16 relocations */
2965 case R_PPC_GOT16:
2966 case R_PPC_GOT16_LO:
2967 case R_PPC_GOT16_HI:
2968 case R_PPC_GOT16_HA:
2969 /* This symbol requires a global offset table entry. */
2970 if (htab->got == NULL)
2971 {
2972 if (htab->elf.dynobj == NULL)
2973 htab->elf.dynobj = abfd;
2974 if (!ppc_elf_create_got (htab->elf.dynobj, info))
2975 return FALSE;
2976 }
2977 if (h != NULL)
2978 {
2979 h->got.refcount += 1;
2980 ppc_elf_hash_entry (h)->tls_mask |= tls_type;
2981 }
2982 else
2983 /* This is a global offset table entry for a local symbol. */
2984 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, tls_type))
2985 return FALSE;
2986 break;
2987
2988 /* Indirect .sdata relocation. */
2989 case R_PPC_EMB_SDAI16:
2990 if (info->shared)
2991 {
2992 bad_shared_reloc (abfd, r_type);
2993 return FALSE;
2994 }
2995 if (htab->sdata[0].section == NULL
2996 && !ppc_elf_create_linker_section (abfd, info, 0,
2997 &htab->sdata[0]))
2998 return FALSE;
2999 if (!elf_create_pointer_linker_section (abfd, &htab->sdata[0],
3000 h, rel))
3001 return FALSE;
3002 break;
3003
3004 /* Indirect .sdata2 relocation. */
3005 case R_PPC_EMB_SDA2I16:
3006 if (info->shared)
3007 {
3008 bad_shared_reloc (abfd, r_type);
3009 return FALSE;
3010 }
3011 if (htab->sdata[1].section == NULL
3012 && !ppc_elf_create_linker_section (abfd, info, SEC_READONLY,
3013 &htab->sdata[1]))
3014 return FALSE;
3015 if (!elf_create_pointer_linker_section (abfd, &htab->sdata[1],
3016 h, rel))
3017 return FALSE;
3018 break;
3019
3020 case R_PPC_SDAREL16:
3021 case R_PPC_EMB_SDA2REL:
3022 case R_PPC_EMB_SDA21:
3023 case R_PPC_EMB_RELSDA:
3024 case R_PPC_EMB_NADDR32:
3025 case R_PPC_EMB_NADDR16:
3026 case R_PPC_EMB_NADDR16_LO:
3027 case R_PPC_EMB_NADDR16_HI:
3028 case R_PPC_EMB_NADDR16_HA:
3029 if (info->shared)
3030 {
3031 bad_shared_reloc (abfd, r_type);
3032 return FALSE;
3033 }
3034 if (h != NULL)
3035 {
3036 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3037 /* We may need a copy reloc. */
3038 h->non_got_ref = TRUE;
3039 }
3040 break;
3041
3042 case R_PPC_PLT32:
3043 case R_PPC_PLTREL24:
3044 case R_PPC_PLTREL32:
3045 case R_PPC_PLT16_LO:
3046 case R_PPC_PLT16_HI:
3047 case R_PPC_PLT16_HA:
3048 #ifdef DEBUG
3049 fprintf (stderr, "Reloc requires a PLT entry\n");
3050 #endif
3051 /* This symbol requires a procedure linkage table entry. We
3052 actually build the entry in finish_dynamic_symbol,
3053 because this might be a case of linking PIC code without
3054 linking in any dynamic objects, in which case we don't
3055 need to generate a procedure linkage table after all. */
3056
3057 if (h == NULL)
3058 {
3059 /* It does not make sense to have a procedure linkage
3060 table entry for a local symbol. */
3061 (*_bfd_error_handler) (_("%B(%A+0x%lx): %s reloc against "
3062 "local symbol"),
3063 abfd,
3064 sec,
3065 (long) rel->r_offset,
3066 ppc_elf_howto_table[r_type]->name);
3067 bfd_set_error (bfd_error_bad_value);
3068 return FALSE;
3069 }
3070 else
3071 {
3072 bfd_vma addend = r_type == R_PPC_PLTREL24 ? rel->r_addend : 0;
3073
3074 h->needs_plt = 1;
3075 if (!update_plt_info (abfd, h, got2, addend))
3076 return FALSE;
3077 }
3078 break;
3079
3080 /* The following relocations don't need to propagate the
3081 relocation if linking a shared object since they are
3082 section relative. */
3083 case R_PPC_SECTOFF:
3084 case R_PPC_SECTOFF_LO:
3085 case R_PPC_SECTOFF_HI:
3086 case R_PPC_SECTOFF_HA:
3087 case R_PPC_DTPREL16:
3088 case R_PPC_DTPREL16_LO:
3089 case R_PPC_DTPREL16_HI:
3090 case R_PPC_DTPREL16_HA:
3091 case R_PPC_TOC16:
3092 break;
3093
3094 case R_PPC_REL16:
3095 case R_PPC_REL16_LO:
3096 case R_PPC_REL16_HI:
3097 case R_PPC_REL16_HA:
3098 htab->new_plt = 1;
3099 break;
3100
3101 /* These are just markers. */
3102 case R_PPC_TLS:
3103 case R_PPC_EMB_MRKREF:
3104 case R_PPC_NONE:
3105 case R_PPC_max:
3106 break;
3107
3108 /* These should only appear in dynamic objects. */
3109 case R_PPC_COPY:
3110 case R_PPC_GLOB_DAT:
3111 case R_PPC_JMP_SLOT:
3112 case R_PPC_RELATIVE:
3113 break;
3114
3115 /* These aren't handled yet. We'll report an error later. */
3116 case R_PPC_ADDR30:
3117 case R_PPC_EMB_RELSEC16:
3118 case R_PPC_EMB_RELST_LO:
3119 case R_PPC_EMB_RELST_HI:
3120 case R_PPC_EMB_RELST_HA:
3121 case R_PPC_EMB_BIT_FLD:
3122 break;
3123
3124 /* This refers only to functions defined in the shared library. */
3125 case R_PPC_LOCAL24PC:
3126 if (h && h == htab->elf.hgot)
3127 htab->old_plt = 1;
3128 break;
3129
3130 /* This relocation describes the C++ object vtable hierarchy.
3131 Reconstruct it for later use during GC. */
3132 case R_PPC_GNU_VTINHERIT:
3133 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
3134 return FALSE;
3135 break;
3136
3137 /* This relocation describes which C++ vtable entries are actually
3138 used. Record for later use during GC. */
3139 case R_PPC_GNU_VTENTRY:
3140 if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
3141 return FALSE;
3142 break;
3143
3144 /* We shouldn't really be seeing these. */
3145 case R_PPC_TPREL32:
3146 if (info->shared)
3147 info->flags |= DF_STATIC_TLS;
3148 goto dodyn;
3149
3150 /* Nor these. */
3151 case R_PPC_DTPMOD32:
3152 case R_PPC_DTPREL32:
3153 goto dodyn;
3154
3155 case R_PPC_TPREL16:
3156 case R_PPC_TPREL16_LO:
3157 case R_PPC_TPREL16_HI:
3158 case R_PPC_TPREL16_HA:
3159 if (info->shared)
3160 info->flags |= DF_STATIC_TLS;
3161 goto dodyn;
3162
3163 case R_PPC_REL32:
3164 if (h == NULL
3165 && got2 != NULL
3166 && (sec->flags & SEC_CODE) != 0
3167 && (info->shared || info->pie)
3168 && !htab->old_plt)
3169 {
3170 /* Old -fPIC gcc code has .long LCTOC1-LCFx just before
3171 the start of a function, which assembles to a REL32
3172 reference to .got2. If we detect one of these, then
3173 force the old PLT layout because the linker cannot
3174 reliably deduce the GOT pointer value needed for
3175 PLT call stubs. */
3176 asection *s;
3177
3178 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec, sec,
3179 r_symndx);
3180 if (s == got2)
3181 htab->old_plt = 1;
3182 }
3183 /* fall through */
3184
3185 case R_PPC_REL24:
3186 case R_PPC_REL14:
3187 case R_PPC_REL14_BRTAKEN:
3188 case R_PPC_REL14_BRNTAKEN:
3189 if (h == NULL)
3190 break;
3191 if (h == htab->elf.hgot)
3192 {
3193 htab->old_plt = 1;
3194 break;
3195 }
3196 /* fall through */
3197
3198 case R_PPC_ADDR32:
3199 case R_PPC_ADDR24:
3200 case R_PPC_ADDR16:
3201 case R_PPC_ADDR16_LO:
3202 case R_PPC_ADDR16_HI:
3203 case R_PPC_ADDR16_HA:
3204 case R_PPC_ADDR14:
3205 case R_PPC_ADDR14_BRTAKEN:
3206 case R_PPC_ADDR14_BRNTAKEN:
3207 case R_PPC_UADDR32:
3208 case R_PPC_UADDR16:
3209 if (h != NULL && !info->shared)
3210 {
3211 /* We may need a plt entry if the symbol turns out to be
3212 a function defined in a dynamic object. */
3213 if (!update_plt_info (abfd, h, NULL, 0))
3214 return FALSE;
3215
3216 /* We may need a copy reloc too. */
3217 h->non_got_ref = 1;
3218 }
3219
3220 dodyn:
3221 /* If we are creating a shared library, and this is a reloc
3222 against a global symbol, or a non PC relative reloc
3223 against a local symbol, then we need to copy the reloc
3224 into the shared library. However, if we are linking with
3225 -Bsymbolic, we do not need to copy a reloc against a
3226 global symbol which is defined in an object we are
3227 including in the link (i.e., DEF_REGULAR is set). At
3228 this point we have not seen all the input files, so it is
3229 possible that DEF_REGULAR is not set now but will be set
3230 later (it is never cleared). In case of a weak definition,
3231 DEF_REGULAR may be cleared later by a strong definition in
3232 a shared library. We account for that possibility below by
3233 storing information in the dyn_relocs field of the hash
3234 table entry. A similar situation occurs when creating
3235 shared libraries and symbol visibility changes render the
3236 symbol local.
3237
3238 If on the other hand, we are creating an executable, we
3239 may need to keep relocations for symbols satisfied by a
3240 dynamic library if we manage to avoid copy relocs for the
3241 symbol. */
3242 if ((info->shared
3243 && (MUST_BE_DYN_RELOC (r_type)
3244 || (h != NULL
3245 && (! info->symbolic
3246 || h->root.type == bfd_link_hash_defweak
3247 || !h->def_regular))))
3248 || (ELIMINATE_COPY_RELOCS
3249 && !info->shared
3250 && h != NULL
3251 && (h->root.type == bfd_link_hash_defweak
3252 || !h->def_regular)))
3253 {
3254 struct ppc_elf_dyn_relocs *p;
3255 struct ppc_elf_dyn_relocs **head;
3256
3257 #ifdef DEBUG
3258 fprintf (stderr,
3259 "ppc_elf_check_relocs needs to "
3260 "create relocation for %s\n",
3261 (h && h->root.root.string
3262 ? h->root.root.string : "<unknown>"));
3263 #endif
3264 if (sreloc == NULL)
3265 {
3266 const char *name;
3267
3268 name = (bfd_elf_string_from_elf_section
3269 (abfd,
3270 elf_elfheader (abfd)->e_shstrndx,
3271 elf_section_data (sec)->rel_hdr.sh_name));
3272 if (name == NULL)
3273 return FALSE;
3274
3275 BFD_ASSERT (strncmp (name, ".rela", 5) == 0
3276 && strcmp (bfd_get_section_name (abfd, sec),
3277 name + 5) == 0);
3278
3279 if (htab->elf.dynobj == NULL)
3280 htab->elf.dynobj = abfd;
3281 sreloc = bfd_get_section_by_name (htab->elf.dynobj, name);
3282 if (sreloc == NULL)
3283 {
3284 flagword flags;
3285
3286 flags = (SEC_HAS_CONTENTS | SEC_READONLY
3287 | SEC_IN_MEMORY | SEC_LINKER_CREATED
3288 | SEC_ALLOC | SEC_LOAD);
3289 sreloc = bfd_make_section_with_flags (htab->elf.dynobj,
3290 name,
3291 flags);
3292 if (sreloc == NULL
3293 || ! bfd_set_section_alignment (htab->elf.dynobj,
3294 sreloc, 2))
3295 return FALSE;
3296 }
3297 elf_section_data (sec)->sreloc = sreloc;
3298 }
3299
3300 /* If this is a global symbol, we count the number of
3301 relocations we need for this symbol. */
3302 if (h != NULL)
3303 {
3304 head = &ppc_elf_hash_entry (h)->dyn_relocs;
3305 }
3306 else
3307 {
3308 /* Track dynamic relocs needed for local syms too.
3309 We really need local syms available to do this
3310 easily. Oh well. */
3311
3312 asection *s;
3313 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec,
3314 sec, r_symndx);
3315 if (s == NULL)
3316 return FALSE;
3317
3318 head = ((struct ppc_elf_dyn_relocs **)
3319 &elf_section_data (s)->local_dynrel);
3320 }
3321
3322 p = *head;
3323 if (p == NULL || p->sec != sec)
3324 {
3325 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
3326 if (p == NULL)
3327 return FALSE;
3328 p->next = *head;
3329 *head = p;
3330 p->sec = sec;
3331 p->count = 0;
3332 p->pc_count = 0;
3333 }
3334
3335 p->count += 1;
3336 if (!MUST_BE_DYN_RELOC (r_type))
3337 p->pc_count += 1;
3338 }
3339
3340 break;
3341 }
3342 }
3343
3344 return TRUE;
3345 }
3346 \f
3347 /* Merge backend specific data from an object file to the output
3348 object file when linking. */
3349
3350 static bfd_boolean
3351 ppc_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
3352 {
3353 flagword old_flags;
3354 flagword new_flags;
3355 bfd_boolean error;
3356
3357 if (!is_ppc_elf_target (ibfd->xvec)
3358 || !is_ppc_elf_target (obfd->xvec))
3359 return TRUE;
3360
3361 /* Check if we have the same endianess. */
3362 if (! _bfd_generic_verify_endian_match (ibfd, obfd))
3363 return FALSE;
3364
3365 new_flags = elf_elfheader (ibfd)->e_flags;
3366 old_flags = elf_elfheader (obfd)->e_flags;
3367 if (!elf_flags_init (obfd))
3368 {
3369 /* First call, no flags set. */
3370 elf_flags_init (obfd) = TRUE;
3371 elf_elfheader (obfd)->e_flags = new_flags;
3372 }
3373
3374 /* Compatible flags are ok. */
3375 else if (new_flags == old_flags)
3376 ;
3377
3378 /* Incompatible flags. */
3379 else
3380 {
3381 /* Warn about -mrelocatable mismatch. Allow -mrelocatable-lib
3382 to be linked with either. */
3383 error = FALSE;
3384 if ((new_flags & EF_PPC_RELOCATABLE) != 0
3385 && (old_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0)
3386 {
3387 error = TRUE;
3388 (*_bfd_error_handler)
3389 (_("%B: compiled with -mrelocatable and linked with "
3390 "modules compiled normally"), ibfd);
3391 }
3392 else if ((new_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0
3393 && (old_flags & EF_PPC_RELOCATABLE) != 0)
3394 {
3395 error = TRUE;
3396 (*_bfd_error_handler)
3397 (_("%B: compiled normally and linked with "
3398 "modules compiled with -mrelocatable"), ibfd);
3399 }
3400
3401 /* The output is -mrelocatable-lib iff both the input files are. */
3402 if (! (new_flags & EF_PPC_RELOCATABLE_LIB))
3403 elf_elfheader (obfd)->e_flags &= ~EF_PPC_RELOCATABLE_LIB;
3404
3405 /* The output is -mrelocatable iff it can't be -mrelocatable-lib,
3406 but each input file is either -mrelocatable or -mrelocatable-lib. */
3407 if (! (elf_elfheader (obfd)->e_flags & EF_PPC_RELOCATABLE_LIB)
3408 && (new_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE))
3409 && (old_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE)))
3410 elf_elfheader (obfd)->e_flags |= EF_PPC_RELOCATABLE;
3411
3412 /* Do not warn about eabi vs. V.4 mismatch, just or in the bit if
3413 any module uses it. */
3414 elf_elfheader (obfd)->e_flags |= (new_flags & EF_PPC_EMB);
3415
3416 new_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
3417 old_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
3418
3419 /* Warn about any other mismatches. */
3420 if (new_flags != old_flags)
3421 {
3422 error = TRUE;
3423 (*_bfd_error_handler)
3424 (_("%B: uses different e_flags (0x%lx) fields "
3425 "than previous modules (0x%lx)"),
3426 ibfd, (long) new_flags, (long) old_flags);
3427 }
3428
3429 if (error)
3430 {
3431 bfd_set_error (bfd_error_bad_value);
3432 return FALSE;
3433 }
3434 }
3435
3436 return TRUE;
3437 }
3438 \f
3439 /* Choose which PLT scheme to use, and set .plt flags appropriately.
3440 Returns -1 on error, 0 for old PLT, 1 for new PLT. */
3441 int
3442 ppc_elf_select_plt_layout (bfd *output_bfd ATTRIBUTE_UNUSED,
3443 struct bfd_link_info *info,
3444 int force_old_plt)
3445 {
3446 struct ppc_elf_link_hash_table *htab;
3447
3448 htab = ppc_elf_hash_table (info);
3449 if (force_old_plt || !htab->new_plt)
3450 htab->old_plt = 1;
3451
3452 if (!htab->old_plt)
3453 {
3454 flagword flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
3455 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3456
3457 /* The new PLT is a loaded section. */
3458 if (htab->plt != NULL
3459 && !bfd_set_section_flags (htab->elf.dynobj, htab->plt, flags))
3460 return -1;
3461
3462 /* The new GOT is not executable. */
3463 if (htab->got != NULL
3464 && !bfd_set_section_flags (htab->elf.dynobj, htab->got, flags))
3465 return -1;
3466 }
3467 else
3468 {
3469 /* Stop an unused .glink section from affecting .text alignment. */
3470 if (htab->glink != NULL
3471 && !bfd_set_section_alignment (htab->elf.dynobj, htab->glink, 0))
3472 return -1;
3473 }
3474 return !htab->old_plt;
3475 }
3476 \f
3477 /* Return the section that should be marked against GC for a given
3478 relocation. */
3479
3480 static asection *
3481 ppc_elf_gc_mark_hook (asection *sec,
3482 struct bfd_link_info *info ATTRIBUTE_UNUSED,
3483 Elf_Internal_Rela *rel,
3484 struct elf_link_hash_entry *h,
3485 Elf_Internal_Sym *sym)
3486 {
3487 if (h != NULL)
3488 {
3489 switch (ELF32_R_TYPE (rel->r_info))
3490 {
3491 case R_PPC_GNU_VTINHERIT:
3492 case R_PPC_GNU_VTENTRY:
3493 break;
3494
3495 default:
3496 switch (h->root.type)
3497 {
3498 case bfd_link_hash_defined:
3499 case bfd_link_hash_defweak:
3500 return h->root.u.def.section;
3501
3502 case bfd_link_hash_common:
3503 return h->root.u.c.p->section;
3504
3505 default:
3506 break;
3507 }
3508 }
3509 }
3510 else
3511 return bfd_section_from_elf_index (sec->owner, sym->st_shndx);
3512
3513 return NULL;
3514 }
3515
3516 /* Update the got, plt and dynamic reloc reference counts for the
3517 section being removed. */
3518
3519 static bfd_boolean
3520 ppc_elf_gc_sweep_hook (bfd *abfd,
3521 struct bfd_link_info *info,
3522 asection *sec,
3523 const Elf_Internal_Rela *relocs)
3524 {
3525 struct ppc_elf_link_hash_table *htab;
3526 Elf_Internal_Shdr *symtab_hdr;
3527 struct elf_link_hash_entry **sym_hashes;
3528 bfd_signed_vma *local_got_refcounts;
3529 const Elf_Internal_Rela *rel, *relend;
3530 asection *got2;
3531
3532 if ((sec->flags & SEC_ALLOC) == 0)
3533 return TRUE;
3534
3535 elf_section_data (sec)->local_dynrel = NULL;
3536
3537 htab = ppc_elf_hash_table (info);
3538 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
3539 sym_hashes = elf_sym_hashes (abfd);
3540 local_got_refcounts = elf_local_got_refcounts (abfd);
3541 got2 = bfd_get_section_by_name (abfd, ".got2");
3542
3543 relend = relocs + sec->reloc_count;
3544 for (rel = relocs; rel < relend; rel++)
3545 {
3546 unsigned long r_symndx;
3547 enum elf_ppc_reloc_type r_type;
3548 struct elf_link_hash_entry *h = NULL;
3549
3550 r_symndx = ELF32_R_SYM (rel->r_info);
3551 if (r_symndx >= symtab_hdr->sh_info)
3552 {
3553 struct ppc_elf_dyn_relocs **pp, *p;
3554 struct ppc_elf_link_hash_entry *eh;
3555
3556 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3557 while (h->root.type == bfd_link_hash_indirect
3558 || h->root.type == bfd_link_hash_warning)
3559 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3560 eh = (struct ppc_elf_link_hash_entry *) h;
3561
3562 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
3563 if (p->sec == sec)
3564 {
3565 /* Everything must go for SEC. */
3566 *pp = p->next;
3567 break;
3568 }
3569 }
3570
3571 r_type = ELF32_R_TYPE (rel->r_info);
3572 switch (r_type)
3573 {
3574 case R_PPC_GOT_TLSLD16:
3575 case R_PPC_GOT_TLSLD16_LO:
3576 case R_PPC_GOT_TLSLD16_HI:
3577 case R_PPC_GOT_TLSLD16_HA:
3578 htab->tlsld_got.refcount -= 1;
3579 /* Fall thru */
3580
3581 case R_PPC_GOT_TLSGD16:
3582 case R_PPC_GOT_TLSGD16_LO:
3583 case R_PPC_GOT_TLSGD16_HI:
3584 case R_PPC_GOT_TLSGD16_HA:
3585 case R_PPC_GOT_TPREL16:
3586 case R_PPC_GOT_TPREL16_LO:
3587 case R_PPC_GOT_TPREL16_HI:
3588 case R_PPC_GOT_TPREL16_HA:
3589 case R_PPC_GOT_DTPREL16:
3590 case R_PPC_GOT_DTPREL16_LO:
3591 case R_PPC_GOT_DTPREL16_HI:
3592 case R_PPC_GOT_DTPREL16_HA:
3593 case R_PPC_GOT16:
3594 case R_PPC_GOT16_LO:
3595 case R_PPC_GOT16_HI:
3596 case R_PPC_GOT16_HA:
3597 if (h != NULL)
3598 {
3599 if (h->got.refcount > 0)
3600 h->got.refcount--;
3601 }
3602 else if (local_got_refcounts != NULL)
3603 {
3604 if (local_got_refcounts[r_symndx] > 0)
3605 local_got_refcounts[r_symndx]--;
3606 }
3607 break;
3608
3609 case R_PPC_REL24:
3610 case R_PPC_REL14:
3611 case R_PPC_REL14_BRTAKEN:
3612 case R_PPC_REL14_BRNTAKEN:
3613 case R_PPC_REL32:
3614 if (h == NULL || h == htab->elf.hgot)
3615 break;
3616 /* Fall thru */
3617
3618 case R_PPC_ADDR32:
3619 case R_PPC_ADDR24:
3620 case R_PPC_ADDR16:
3621 case R_PPC_ADDR16_LO:
3622 case R_PPC_ADDR16_HI:
3623 case R_PPC_ADDR16_HA:
3624 case R_PPC_ADDR14:
3625 case R_PPC_ADDR14_BRTAKEN:
3626 case R_PPC_ADDR14_BRNTAKEN:
3627 case R_PPC_UADDR32:
3628 case R_PPC_UADDR16:
3629 case R_PPC_PLT32:
3630 case R_PPC_PLTREL24:
3631 case R_PPC_PLT16_LO:
3632 case R_PPC_PLT16_HI:
3633 case R_PPC_PLT16_HA:
3634 if (h != NULL)
3635 {
3636 bfd_vma addend = r_type == R_PPC_PLTREL24 ? rel->r_addend : 0;
3637 struct plt_entry *ent = find_plt_ent (h, got2, addend);
3638 if (ent->plt.refcount > 0)
3639 ent->plt.refcount -= 1;
3640 }
3641 break;
3642
3643 default:
3644 break;
3645 }
3646 }
3647 return TRUE;
3648 }
3649 \f
3650 /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */
3651
3652 asection *
3653 ppc_elf_tls_setup (bfd *obfd, struct bfd_link_info *info)
3654 {
3655 struct ppc_elf_link_hash_table *htab;
3656
3657 htab = ppc_elf_hash_table (info);
3658 if (!htab->old_plt
3659 && htab->plt != NULL
3660 && htab->plt->output_section != NULL)
3661 {
3662 elf_section_type (htab->plt->output_section) = SHT_PROGBITS;
3663 elf_section_flags (htab->plt->output_section) = SHF_ALLOC + SHF_WRITE;
3664 }
3665
3666 htab->tls_get_addr = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
3667 FALSE, FALSE, TRUE);
3668 return _bfd_elf_tls_setup (obfd, info);
3669 }
3670
3671 /* Run through all the TLS relocs looking for optimization
3672 opportunities. */
3673
3674 bfd_boolean
3675 ppc_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED,
3676 struct bfd_link_info *info)
3677 {
3678 bfd *ibfd;
3679 asection *sec;
3680 struct ppc_elf_link_hash_table *htab;
3681
3682 if (info->relocatable || info->shared)
3683 return TRUE;
3684
3685 htab = ppc_elf_hash_table (info);
3686 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
3687 {
3688 Elf_Internal_Sym *locsyms = NULL;
3689 Elf_Internal_Shdr *symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
3690
3691 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
3692 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
3693 {
3694 Elf_Internal_Rela *relstart, *rel, *relend;
3695 int expecting_tls_get_addr;
3696
3697 /* Read the relocations. */
3698 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
3699 info->keep_memory);
3700 if (relstart == NULL)
3701 return FALSE;
3702
3703 expecting_tls_get_addr = 0;
3704 relend = relstart + sec->reloc_count;
3705 for (rel = relstart; rel < relend; rel++)
3706 {
3707 enum elf_ppc_reloc_type r_type;
3708 unsigned long r_symndx;
3709 struct elf_link_hash_entry *h = NULL;
3710 char *tls_mask;
3711 char tls_set, tls_clear;
3712 bfd_boolean is_local;
3713
3714 r_symndx = ELF32_R_SYM (rel->r_info);
3715 if (r_symndx >= symtab_hdr->sh_info)
3716 {
3717 struct elf_link_hash_entry **sym_hashes;
3718
3719 sym_hashes = elf_sym_hashes (ibfd);
3720 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3721 while (h->root.type == bfd_link_hash_indirect
3722 || h->root.type == bfd_link_hash_warning)
3723 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3724 }
3725
3726 is_local = FALSE;
3727 if (h == NULL
3728 || !h->def_dynamic)
3729 is_local = TRUE;
3730
3731 r_type = ELF32_R_TYPE (rel->r_info);
3732 switch (r_type)
3733 {
3734 case R_PPC_GOT_TLSLD16:
3735 case R_PPC_GOT_TLSLD16_LO:
3736 case R_PPC_GOT_TLSLD16_HI:
3737 case R_PPC_GOT_TLSLD16_HA:
3738 /* These relocs should never be against a symbol
3739 defined in a shared lib. Leave them alone if
3740 that turns out to be the case. */
3741 expecting_tls_get_addr = 0;
3742 htab->tlsld_got.refcount -= 1;
3743 if (!is_local)
3744 continue;
3745
3746 /* LD -> LE */
3747 tls_set = 0;
3748 tls_clear = TLS_LD;
3749 expecting_tls_get_addr = 1;
3750 break;
3751
3752 case R_PPC_GOT_TLSGD16:
3753 case R_PPC_GOT_TLSGD16_LO:
3754 case R_PPC_GOT_TLSGD16_HI:
3755 case R_PPC_GOT_TLSGD16_HA:
3756 if (is_local)
3757 /* GD -> LE */
3758 tls_set = 0;
3759 else
3760 /* GD -> IE */
3761 tls_set = TLS_TLS | TLS_TPRELGD;
3762 tls_clear = TLS_GD;
3763 expecting_tls_get_addr = 1;
3764 break;
3765
3766 case R_PPC_GOT_TPREL16:
3767 case R_PPC_GOT_TPREL16_LO:
3768 case R_PPC_GOT_TPREL16_HI:
3769 case R_PPC_GOT_TPREL16_HA:
3770 expecting_tls_get_addr = 0;
3771 if (is_local)
3772 {
3773 /* IE -> LE */
3774 tls_set = 0;
3775 tls_clear = TLS_TPREL;
3776 break;
3777 }
3778 else
3779 continue;
3780
3781 case R_PPC_REL14:
3782 case R_PPC_REL14_BRTAKEN:
3783 case R_PPC_REL14_BRNTAKEN:
3784 case R_PPC_REL24:
3785 if (expecting_tls_get_addr
3786 && h != NULL
3787 && h == htab->tls_get_addr)
3788 {
3789 struct plt_entry *ent = find_plt_ent (h, NULL, 0);
3790 if (ent != NULL && ent->plt.refcount > 0)
3791 ent->plt.refcount -= 1;
3792 }
3793 expecting_tls_get_addr = 0;
3794 continue;
3795
3796 default:
3797 expecting_tls_get_addr = 0;
3798 continue;
3799 }
3800
3801 if (h != NULL)
3802 {
3803 if (tls_set == 0)
3804 {
3805 /* We managed to get rid of a got entry. */
3806 if (h->got.refcount > 0)
3807 h->got.refcount -= 1;
3808 }
3809 tls_mask = &ppc_elf_hash_entry (h)->tls_mask;
3810 }
3811 else
3812 {
3813 Elf_Internal_Sym *sym;
3814 bfd_signed_vma *lgot_refs;
3815 char *lgot_masks;
3816
3817 if (locsyms == NULL)
3818 {
3819 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
3820 if (locsyms == NULL)
3821 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
3822 symtab_hdr->sh_info,
3823 0, NULL, NULL, NULL);
3824 if (locsyms == NULL)
3825 {
3826 if (elf_section_data (sec)->relocs != relstart)
3827 free (relstart);
3828 return FALSE;
3829 }
3830 }
3831 sym = locsyms + r_symndx;
3832 lgot_refs = elf_local_got_refcounts (ibfd);
3833 if (lgot_refs == NULL)
3834 abort ();
3835 if (tls_set == 0)
3836 {
3837 /* We managed to get rid of a got entry. */
3838 if (lgot_refs[r_symndx] > 0)
3839 lgot_refs[r_symndx] -= 1;
3840 }
3841 lgot_masks = (char *) (lgot_refs + symtab_hdr->sh_info);
3842 tls_mask = &lgot_masks[r_symndx];
3843 }
3844
3845 *tls_mask |= tls_set;
3846 *tls_mask &= ~tls_clear;
3847 }
3848
3849 if (elf_section_data (sec)->relocs != relstart)
3850 free (relstart);
3851 }
3852
3853 if (locsyms != NULL
3854 && (symtab_hdr->contents != (unsigned char *) locsyms))
3855 {
3856 if (!info->keep_memory)
3857 free (locsyms);
3858 else
3859 symtab_hdr->contents = (unsigned char *) locsyms;
3860 }
3861 }
3862 return TRUE;
3863 }
3864 \f
3865 /* Adjust a symbol defined by a dynamic object and referenced by a
3866 regular object. The current definition is in some section of the
3867 dynamic object, but we're not including those sections. We have to
3868 change the definition to something the rest of the link can
3869 understand. */
3870
3871 static bfd_boolean
3872 ppc_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
3873 struct elf_link_hash_entry *h)
3874 {
3875 struct ppc_elf_link_hash_table *htab;
3876 asection *s;
3877 unsigned int power_of_two;
3878
3879 #ifdef DEBUG
3880 fprintf (stderr, "ppc_elf_adjust_dynamic_symbol called for %s\n",
3881 h->root.root.string);
3882 #endif
3883
3884 /* Make sure we know what is going on here. */
3885 htab = ppc_elf_hash_table (info);
3886 BFD_ASSERT (htab->elf.dynobj != NULL
3887 && (h->needs_plt
3888 || h->u.weakdef != NULL
3889 || (h->def_dynamic
3890 && h->ref_regular
3891 && !h->def_regular)));
3892
3893 /* Deal with function syms. */
3894 if (h->type == STT_FUNC
3895 || h->needs_plt)
3896 {
3897 /* Clear procedure linkage table information for any symbol that
3898 won't need a .plt entry. */
3899 struct plt_entry *ent;
3900 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
3901 if (ent->plt.refcount > 0)
3902 break;
3903 if (ent == NULL
3904 || SYMBOL_CALLS_LOCAL (info, h)
3905 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
3906 && h->root.type == bfd_link_hash_undefweak))
3907 {
3908 /* A PLT entry is not required/allowed when:
3909
3910 1. We are not using ld.so; because then the PLT entry
3911 can't be set up, so we can't use one. In this case,
3912 ppc_elf_adjust_dynamic_symbol won't even be called.
3913
3914 2. GC has rendered the entry unused.
3915
3916 3. We know for certain that a call to this symbol
3917 will go to this object, or will remain undefined. */
3918 h->plt.plist = NULL;
3919 h->needs_plt = 0;
3920 }
3921 return TRUE;
3922 }
3923 else
3924 h->plt.plist = NULL;
3925
3926 /* If this is a weak symbol, and there is a real definition, the
3927 processor independent code will have arranged for us to see the
3928 real definition first, and we can just use the same value. */
3929 if (h->u.weakdef != NULL)
3930 {
3931 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
3932 || h->u.weakdef->root.type == bfd_link_hash_defweak);
3933 h->root.u.def.section = h->u.weakdef->root.u.def.section;
3934 h->root.u.def.value = h->u.weakdef->root.u.def.value;
3935 if (ELIMINATE_COPY_RELOCS)
3936 h->non_got_ref = h->u.weakdef->non_got_ref;
3937 return TRUE;
3938 }
3939
3940 /* This is a reference to a symbol defined by a dynamic object which
3941 is not a function. */
3942
3943 /* If we are creating a shared library, we must presume that the
3944 only references to the symbol are via the global offset table.
3945 For such cases we need not do anything here; the relocations will
3946 be handled correctly by relocate_section. */
3947 if (info->shared)
3948 return TRUE;
3949
3950 /* If there are no references to this symbol that do not use the
3951 GOT, we don't need to generate a copy reloc. */
3952 if (!h->non_got_ref)
3953 return TRUE;
3954
3955 /* If we didn't find any dynamic relocs in read-only sections, then we'll
3956 be keeping the dynamic relocs and avoiding the copy reloc. We can't
3957 do this if there are any small data relocations. */
3958 if (ELIMINATE_COPY_RELOCS
3959 && !ppc_elf_hash_entry (h)->has_sda_refs)
3960 {
3961 struct ppc_elf_dyn_relocs *p;
3962 for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next)
3963 {
3964 s = p->sec->output_section;
3965 if (s != NULL && (s->flags & SEC_READONLY) != 0)
3966 break;
3967 }
3968
3969 if (p == NULL)
3970 {
3971 h->non_got_ref = 0;
3972 return TRUE;
3973 }
3974 }
3975
3976 /* We must allocate the symbol in our .dynbss section, which will
3977 become part of the .bss section of the executable. There will be
3978 an entry for this symbol in the .dynsym section. The dynamic
3979 object will contain position independent code, so all references
3980 from the dynamic object to this symbol will go through the global
3981 offset table. The dynamic linker will use the .dynsym entry to
3982 determine the address it must put in the global offset table, so
3983 both the dynamic object and the regular object will refer to the
3984 same memory location for the variable.
3985
3986 Of course, if the symbol is referenced using SDAREL relocs, we
3987 must instead allocate it in .sbss. */
3988
3989 if (ppc_elf_hash_entry (h)->has_sda_refs)
3990 s = htab->dynsbss;
3991 else
3992 s = htab->dynbss;
3993 BFD_ASSERT (s != NULL);
3994
3995 /* We must generate a R_PPC_COPY reloc to tell the dynamic linker to
3996 copy the initial value out of the dynamic object and into the
3997 runtime process image. We need to remember the offset into the
3998 .rela.bss section we are going to use. */
3999 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
4000 {
4001 asection *srel;
4002
4003 if (ppc_elf_hash_entry (h)->has_sda_refs)
4004 srel = htab->relsbss;
4005 else
4006 srel = htab->relbss;
4007 BFD_ASSERT (srel != NULL);
4008 srel->size += sizeof (Elf32_External_Rela);
4009 h->needs_copy = 1;
4010 }
4011
4012 /* We need to figure out the alignment required for this symbol. I
4013 have no idea how ELF linkers handle this. */
4014 power_of_two = bfd_log2 (h->size);
4015 if (power_of_two > 4)
4016 power_of_two = 4;
4017
4018 /* Apply the required alignment. */
4019 s->size = BFD_ALIGN (s->size, (bfd_size_type) (1 << power_of_two));
4020 if (power_of_two > bfd_get_section_alignment (htab->elf.dynobj, s))
4021 {
4022 if (! bfd_set_section_alignment (htab->elf.dynobj, s, power_of_two))
4023 return FALSE;
4024 }
4025
4026 /* Define the symbol as being at this point in the section. */
4027 h->root.u.def.section = s;
4028 h->root.u.def.value = s->size;
4029
4030 /* Increment the section size to make room for the symbol. */
4031 s->size += h->size;
4032
4033 return TRUE;
4034 }
4035 \f
4036 /* Allocate NEED contiguous space in .got, and return the offset.
4037 Handles allocation of the got header when crossing 32k. */
4038
4039 static bfd_vma
4040 allocate_got (struct ppc_elf_link_hash_table *htab, unsigned int need)
4041 {
4042 bfd_vma where;
4043 unsigned int max_before_header = 32768;
4044
4045 if (htab->old_plt)
4046 max_before_header = 32764;
4047
4048 if (need <= htab->got_gap)
4049 {
4050 where = max_before_header - htab->got_gap;
4051 htab->got_gap -= need;
4052 }
4053 else
4054 {
4055 if (htab->got->size + need > max_before_header
4056 && htab->got->size <= max_before_header)
4057 {
4058 htab->got_gap = max_before_header - htab->got->size;
4059 htab->got->size = max_before_header + htab->got_header_size;
4060 }
4061 where = htab->got->size;
4062 htab->got->size += need;
4063 }
4064 return where;
4065 }
4066
4067 /* Allocate space in associated reloc sections for dynamic relocs. */
4068
4069 static bfd_boolean
4070 allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
4071 {
4072 struct bfd_link_info *info = inf;
4073 struct ppc_elf_link_hash_entry *eh;
4074 struct ppc_elf_link_hash_table *htab;
4075 struct ppc_elf_dyn_relocs *p;
4076
4077 if (h->root.type == bfd_link_hash_indirect)
4078 return TRUE;
4079
4080 if (h->root.type == bfd_link_hash_warning)
4081 /* When warning symbols are created, they **replace** the "real"
4082 entry in the hash table, thus we never get to see the real
4083 symbol in a hash traversal. So look at it now. */
4084 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4085
4086 htab = ppc_elf_hash_table (info);
4087 if (htab->elf.dynamic_sections_created)
4088 {
4089 struct plt_entry *ent;
4090 bfd_boolean doneone = FALSE;
4091 bfd_vma plt_offset = 0, glink_offset = 0;
4092
4093 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
4094 if (ent->plt.refcount > 0)
4095 {
4096 /* Make sure this symbol is output as a dynamic symbol. */
4097 if (h->dynindx == -1
4098 && !h->forced_local)
4099 {
4100 if (! bfd_elf_link_record_dynamic_symbol (info, h))
4101 return FALSE;
4102 }
4103
4104 if (info->shared
4105 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
4106 {
4107 asection *s = htab->plt;
4108
4109 if (!htab->old_plt)
4110 {
4111 if (!doneone)
4112 {
4113 plt_offset = s->size;
4114 s->size += 4;
4115 }
4116 ent->plt.offset = plt_offset;
4117
4118 s = htab->glink;
4119 if (!doneone || info->shared || info->pie)
4120 {
4121 glink_offset = s->size;
4122 s->size += GLINK_ENTRY_SIZE;
4123 }
4124 if (!doneone
4125 && !info->shared
4126 && !h->def_regular)
4127 {
4128 h->root.u.def.section = s;
4129 h->root.u.def.value = glink_offset;
4130 }
4131 ent->glink_offset = glink_offset;
4132 }
4133 else
4134 {
4135 if (!doneone)
4136 {
4137 /* If this is the first .plt entry, make room
4138 for the special first entry. */
4139 if (s->size == 0)
4140 s->size += PLT_INITIAL_ENTRY_SIZE;
4141
4142 /* The PowerPC PLT is actually composed of two
4143 parts, the first part is 2 words (for a load
4144 and a jump), and then there is a remaining
4145 word available at the end. */
4146 plt_offset = (PLT_INITIAL_ENTRY_SIZE
4147 + (PLT_SLOT_SIZE
4148 * ((s->size - PLT_INITIAL_ENTRY_SIZE)
4149 / PLT_ENTRY_SIZE)));
4150
4151 /* If this symbol is not defined in a regular
4152 file, and we are not generating a shared
4153 library, then set the symbol to this location
4154 in the .plt. This is required to make
4155 function pointers compare as equal between
4156 the normal executable and the shared library. */
4157 if (! info->shared
4158 && !h->def_regular)
4159 {
4160 h->root.u.def.section = s;
4161 h->root.u.def.value = plt_offset;
4162 }
4163
4164 /* Make room for this entry. After the 8192nd
4165 entry, room for two entries is allocated. */
4166 s->size += PLT_ENTRY_SIZE;
4167 if ((s->size - PLT_INITIAL_ENTRY_SIZE) / PLT_ENTRY_SIZE
4168 > PLT_NUM_SINGLE_ENTRIES)
4169 s->size += PLT_ENTRY_SIZE;
4170 }
4171 ent->plt.offset = plt_offset;
4172 }
4173
4174 /* We also need to make an entry in the .rela.plt section. */
4175 if (!doneone)
4176 {
4177 htab->relplt->size += sizeof (Elf32_External_Rela);
4178 doneone = TRUE;
4179 }
4180 }
4181 else
4182 ent->plt.offset = (bfd_vma) -1;
4183
4184 if (!doneone)
4185 {
4186 h->plt.plist = NULL;
4187 h->needs_plt = 0;
4188 }
4189 }
4190 }
4191 else
4192 {
4193 h->plt.plist = NULL;
4194 h->needs_plt = 0;
4195 }
4196
4197 eh = (struct ppc_elf_link_hash_entry *) h;
4198 if (eh->elf.got.refcount > 0)
4199 {
4200 /* Make sure this symbol is output as a dynamic symbol. */
4201 if (eh->elf.dynindx == -1
4202 && !eh->elf.forced_local)
4203 {
4204 if (!bfd_elf_link_record_dynamic_symbol (info, &eh->elf))
4205 return FALSE;
4206 }
4207
4208 if (eh->tls_mask == (TLS_TLS | TLS_LD)
4209 && !eh->elf.def_dynamic)
4210 /* If just an LD reloc, we'll just use htab->tlsld_got.offset. */
4211 eh->elf.got.offset = (bfd_vma) -1;
4212 else
4213 {
4214 bfd_boolean dyn;
4215 unsigned int need = 0;
4216 if ((eh->tls_mask & TLS_TLS) != 0)
4217 {
4218 if ((eh->tls_mask & TLS_LD) != 0)
4219 need += 8;
4220 if ((eh->tls_mask & TLS_GD) != 0)
4221 need += 8;
4222 if ((eh->tls_mask & (TLS_TPREL | TLS_TPRELGD)) != 0)
4223 need += 4;
4224 if ((eh->tls_mask & TLS_DTPREL) != 0)
4225 need += 4;
4226 }
4227 else
4228 need += 4;
4229 eh->elf.got.offset = allocate_got (htab, need);
4230 dyn = htab->elf.dynamic_sections_created;
4231 if ((info->shared
4232 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, &eh->elf))
4233 && (ELF_ST_VISIBILITY (eh->elf.other) == STV_DEFAULT
4234 || eh->elf.root.type != bfd_link_hash_undefweak))
4235 {
4236 /* All the entries we allocated need relocs.
4237 Except LD only needs one. */
4238 if ((eh->tls_mask & TLS_LD) != 0)
4239 need -= 4;
4240 htab->relgot->size += need * (sizeof (Elf32_External_Rela) / 4);
4241 }
4242 }
4243 }
4244 else
4245 eh->elf.got.offset = (bfd_vma) -1;
4246
4247 if (eh->dyn_relocs == NULL)
4248 return TRUE;
4249
4250 /* In the shared -Bsymbolic case, discard space allocated for
4251 dynamic pc-relative relocs against symbols which turn out to be
4252 defined in regular objects. For the normal shared case, discard
4253 space for relocs that have become local due to symbol visibility
4254 changes. */
4255
4256 if (info->shared)
4257 {
4258 /* Relocs that use pc_count are those that appear on a call insn,
4259 or certain REL relocs (see MUST_BE_DYN_RELOC) that can be
4260 generated via assembly. We want calls to protected symbols to
4261 resolve directly to the function rather than going via the plt.
4262 If people want function pointer comparisons to work as expected
4263 then they should avoid writing weird assembly. */
4264 if (SYMBOL_CALLS_LOCAL (info, h))
4265 {
4266 struct ppc_elf_dyn_relocs **pp;
4267
4268 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
4269 {
4270 p->count -= p->pc_count;
4271 p->pc_count = 0;
4272 if (p->count == 0)
4273 *pp = p->next;
4274 else
4275 pp = &p->next;
4276 }
4277 }
4278
4279 /* Also discard relocs on undefined weak syms with non-default
4280 visibility. */
4281 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
4282 && h->root.type == bfd_link_hash_undefweak)
4283 eh->dyn_relocs = NULL;
4284
4285 /* Make sure undefined weak symbols are output as a dynamic symbol
4286 in PIEs. */
4287 if (info->pie
4288 && eh->dyn_relocs != NULL
4289 && h->dynindx == -1
4290 && h->root.type == bfd_link_hash_undefweak
4291 && !h->forced_local)
4292 {
4293 if (! bfd_elf_link_record_dynamic_symbol (info, h))
4294 return FALSE;
4295 }
4296 }
4297 else if (ELIMINATE_COPY_RELOCS)
4298 {
4299 /* For the non-shared case, discard space for relocs against
4300 symbols which turn out to need copy relocs or are not
4301 dynamic. */
4302
4303 if (!h->non_got_ref
4304 && h->def_dynamic
4305 && !h->def_regular)
4306 {
4307 /* Make sure this symbol is output as a dynamic symbol.
4308 Undefined weak syms won't yet be marked as dynamic. */
4309 if (h->dynindx == -1
4310 && !h->forced_local)
4311 {
4312 if (! bfd_elf_link_record_dynamic_symbol (info, h))
4313 return FALSE;
4314 }
4315
4316 /* If that succeeded, we know we'll be keeping all the
4317 relocs. */
4318 if (h->dynindx != -1)
4319 goto keep;
4320 }
4321
4322 eh->dyn_relocs = NULL;
4323
4324 keep: ;
4325 }
4326
4327 /* Finally, allocate space. */
4328 for (p = eh->dyn_relocs; p != NULL; p = p->next)
4329 {
4330 asection *sreloc = elf_section_data (p->sec)->sreloc;
4331 sreloc->size += p->count * sizeof (Elf32_External_Rela);
4332 }
4333
4334 return TRUE;
4335 }
4336
4337 /* Find any dynamic relocs that apply to read-only sections. */
4338
4339 static bfd_boolean
4340 readonly_dynrelocs (struct elf_link_hash_entry *h, void *info)
4341 {
4342 struct ppc_elf_dyn_relocs *p;
4343
4344 if (h->root.type == bfd_link_hash_indirect)
4345 return TRUE;
4346
4347 if (h->root.type == bfd_link_hash_warning)
4348 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4349
4350 for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next)
4351 {
4352 asection *s = p->sec->output_section;
4353
4354 if (s != NULL
4355 && ((s->flags & (SEC_READONLY | SEC_ALLOC))
4356 == (SEC_READONLY | SEC_ALLOC)))
4357 {
4358 ((struct bfd_link_info *) info)->flags |= DF_TEXTREL;
4359
4360 /* Not an error, just cut short the traversal. */
4361 return FALSE;
4362 }
4363 }
4364 return TRUE;
4365 }
4366
4367 /* Set the sizes of the dynamic sections. */
4368
4369 static bfd_boolean
4370 ppc_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
4371 struct bfd_link_info *info)
4372 {
4373 struct ppc_elf_link_hash_table *htab;
4374 asection *s;
4375 bfd_boolean relocs;
4376 bfd *ibfd;
4377
4378 #ifdef DEBUG
4379 fprintf (stderr, "ppc_elf_size_dynamic_sections called\n");
4380 #endif
4381
4382 htab = ppc_elf_hash_table (info);
4383 BFD_ASSERT (htab->elf.dynobj != NULL);
4384
4385 if (elf_hash_table (info)->dynamic_sections_created)
4386 {
4387 /* Set the contents of the .interp section to the interpreter. */
4388 if (info->executable)
4389 {
4390 s = bfd_get_section_by_name (htab->elf.dynobj, ".interp");
4391 BFD_ASSERT (s != NULL);
4392 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
4393 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
4394 }
4395 }
4396
4397 if (htab->old_plt)
4398 htab->got_header_size = 16;
4399 else
4400 htab->got_header_size = 12;
4401
4402 /* Set up .got offsets for local syms, and space for local dynamic
4403 relocs. */
4404 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
4405 {
4406 bfd_signed_vma *local_got;
4407 bfd_signed_vma *end_local_got;
4408 char *lgot_masks;
4409 bfd_size_type locsymcount;
4410 Elf_Internal_Shdr *symtab_hdr;
4411
4412 if (!is_ppc_elf_target (ibfd->xvec))
4413 continue;
4414
4415 for (s = ibfd->sections; s != NULL; s = s->next)
4416 {
4417 struct ppc_elf_dyn_relocs *p;
4418
4419 for (p = ((struct ppc_elf_dyn_relocs *)
4420 elf_section_data (s)->local_dynrel);
4421 p != NULL;
4422 p = p->next)
4423 {
4424 if (!bfd_is_abs_section (p->sec)
4425 && bfd_is_abs_section (p->sec->output_section))
4426 {
4427 /* Input section has been discarded, either because
4428 it is a copy of a linkonce section or due to
4429 linker script /DISCARD/, so we'll be discarding
4430 the relocs too. */
4431 }
4432 else if (p->count != 0)
4433 {
4434 elf_section_data (p->sec)->sreloc->size
4435 += p->count * sizeof (Elf32_External_Rela);
4436 if ((p->sec->output_section->flags
4437 & (SEC_READONLY | SEC_ALLOC))
4438 == (SEC_READONLY | SEC_ALLOC))
4439 info->flags |= DF_TEXTREL;
4440 }
4441 }
4442 }
4443
4444 local_got = elf_local_got_refcounts (ibfd);
4445 if (!local_got)
4446 continue;
4447
4448 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
4449 locsymcount = symtab_hdr->sh_info;
4450 end_local_got = local_got + locsymcount;
4451 lgot_masks = (char *) end_local_got;
4452 for (; local_got < end_local_got; ++local_got, ++lgot_masks)
4453 if (*local_got > 0)
4454 {
4455 if (*lgot_masks == (TLS_TLS | TLS_LD))
4456 {
4457 /* If just an LD reloc, we'll just use
4458 htab->tlsld_got.offset. */
4459 htab->tlsld_got.refcount += 1;
4460 *local_got = (bfd_vma) -1;
4461 }
4462 else
4463 {
4464 unsigned int need = 0;
4465 if ((*lgot_masks & TLS_TLS) != 0)
4466 {
4467 if ((*lgot_masks & TLS_GD) != 0)
4468 need += 8;
4469 if ((*lgot_masks & (TLS_TPREL | TLS_TPRELGD)) != 0)
4470 need += 4;
4471 if ((*lgot_masks & TLS_DTPREL) != 0)
4472 need += 4;
4473 }
4474 else
4475 need += 4;
4476 *local_got = allocate_got (htab, need);
4477 if (info->shared)
4478 htab->relgot->size += (need
4479 * (sizeof (Elf32_External_Rela) / 4));
4480 }
4481 }
4482 else
4483 *local_got = (bfd_vma) -1;
4484 }
4485
4486 if (htab->tlsld_got.refcount > 0)
4487 {
4488 htab->tlsld_got.offset = allocate_got (htab, 8);
4489 if (info->shared)
4490 htab->relgot->size += sizeof (Elf32_External_Rela);
4491 }
4492 else
4493 htab->tlsld_got.offset = (bfd_vma) -1;
4494
4495 /* Allocate space for global sym dynamic relocs. */
4496 elf_link_hash_traverse (elf_hash_table (info), allocate_dynrelocs, info);
4497
4498 if (htab->got != NULL)
4499 {
4500 unsigned int g_o_t = 32768;
4501
4502 /* If we haven't allocated the header, do so now. */
4503 if (htab->got->size <= 32768)
4504 {
4505 g_o_t = htab->got->size;
4506 htab->got->size += htab->got_header_size;
4507 }
4508 if (htab->old_plt)
4509 g_o_t += 4;
4510
4511 htab->elf.hgot->root.u.def.value = g_o_t;
4512 }
4513
4514 if (htab->glink != NULL && htab->glink->size != 0)
4515 {
4516 htab->glink_pltresolve = htab->glink->size;
4517 /* Space for the branch table. */
4518 htab->glink->size += htab->glink->size / (GLINK_ENTRY_SIZE / 4) - 4;
4519 /* Pad out to align the start of PLTresolve. */
4520 htab->glink->size += -htab->glink->size & 15;
4521 htab->glink->size += GLINK_PLTRESOLVE;
4522 }
4523
4524 /* We've now determined the sizes of the various dynamic sections.
4525 Allocate memory for them. */
4526 relocs = FALSE;
4527 for (s = htab->elf.dynobj->sections; s != NULL; s = s->next)
4528 {
4529 if ((s->flags & SEC_LINKER_CREATED) == 0)
4530 continue;
4531
4532 if (s == htab->plt
4533 || s == htab->glink
4534 || s == htab->got
4535 || s == htab->sbss)
4536 {
4537 /* Strip this section if we don't need it; see the
4538 comment below. */
4539 }
4540 else if (s == htab->sdata[0].section
4541 || s == htab->sdata[1].section)
4542 {
4543 /* Strip these too. */
4544 }
4545 else if (strncmp (bfd_get_section_name (dynobj, s), ".rela", 5) == 0)
4546 {
4547 if (s->size == 0)
4548 {
4549 /* If we don't need this section, strip it from the
4550 output file. This is mostly to handle .rela.bss and
4551 .rela.plt. We must create both sections in
4552 create_dynamic_sections, because they must be created
4553 before the linker maps input sections to output
4554 sections. The linker does that before
4555 adjust_dynamic_symbol is called, and it is that
4556 function which decides whether anything needs to go
4557 into these sections. */
4558 }
4559 else
4560 {
4561 /* Remember whether there are any relocation sections. */
4562 relocs = TRUE;
4563
4564 /* We use the reloc_count field as a counter if we need
4565 to copy relocs into the output file. */
4566 s->reloc_count = 0;
4567 }
4568 }
4569 else
4570 {
4571 /* It's not one of our sections, so don't allocate space. */
4572 continue;
4573 }
4574
4575 if (s->size == 0)
4576 {
4577 s->flags |= SEC_EXCLUDE;
4578 continue;
4579 }
4580
4581 if ((s->flags & SEC_HAS_CONTENTS) == 0)
4582 continue;
4583
4584 /* Allocate memory for the section contents. */
4585 s->contents = bfd_zalloc (htab->elf.dynobj, s->size);
4586 if (s->contents == NULL)
4587 return FALSE;
4588 }
4589
4590 if (htab->elf.dynamic_sections_created)
4591 {
4592 /* Add some entries to the .dynamic section. We fill in the
4593 values later, in ppc_elf_finish_dynamic_sections, but we
4594 must add the entries now so that we get the correct size for
4595 the .dynamic section. The DT_DEBUG entry is filled in by the
4596 dynamic linker and used by the debugger. */
4597 #define add_dynamic_entry(TAG, VAL) \
4598 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
4599
4600 if (info->executable)
4601 {
4602 if (!add_dynamic_entry (DT_DEBUG, 0))
4603 return FALSE;
4604 }
4605
4606 if (htab->plt != NULL && htab->plt->size != 0)
4607 {
4608 if (!add_dynamic_entry (DT_PLTGOT, 0)
4609 || !add_dynamic_entry (DT_PLTRELSZ, 0)
4610 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
4611 || !add_dynamic_entry (DT_JMPREL, 0))
4612 return FALSE;
4613 }
4614
4615 if (htab->glink != NULL && htab->glink->size != 0)
4616 {
4617 if (!add_dynamic_entry (DT_PPC_GOT, 0))
4618 return FALSE;
4619 }
4620
4621 if (relocs)
4622 {
4623 if (!add_dynamic_entry (DT_RELA, 0)
4624 || !add_dynamic_entry (DT_RELASZ, 0)
4625 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
4626 return FALSE;
4627 }
4628
4629 /* If any dynamic relocs apply to a read-only section, then we
4630 need a DT_TEXTREL entry. */
4631 if ((info->flags & DF_TEXTREL) == 0)
4632 elf_link_hash_traverse (elf_hash_table (info), readonly_dynrelocs,
4633 info);
4634
4635 if ((info->flags & DF_TEXTREL) != 0)
4636 {
4637 if (!add_dynamic_entry (DT_TEXTREL, 0))
4638 return FALSE;
4639 }
4640 }
4641 #undef add_dynamic_entry
4642
4643 return TRUE;
4644 }
4645 \f
4646 #define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0]))
4647
4648 static const int shared_stub_entry[] =
4649 {
4650 0x7c0802a6, /* mflr 0 */
4651 0x429f0005, /* bcl 20, 31, .Lxxx */
4652 0x7d6802a6, /* mflr 11 */
4653 0x3d6b0000, /* addis 11, 11, (xxx-.Lxxx)@ha */
4654 0x396b0018, /* addi 11, 11, (xxx-.Lxxx)@l */
4655 0x7c0803a6, /* mtlr 0 */
4656 0x7d6903a6, /* mtctr 11 */
4657 0x4e800420, /* bctr */
4658 };
4659
4660 static const int stub_entry[] =
4661 {
4662 0x3d600000, /* lis 11,xxx@ha */
4663 0x396b0000, /* addi 11,11,xxx@l */
4664 0x7d6903a6, /* mtctr 11 */
4665 0x4e800420, /* bctr */
4666 };
4667
4668 static bfd_boolean
4669 ppc_elf_relax_section (bfd *abfd,
4670 asection *isec,
4671 struct bfd_link_info *link_info,
4672 bfd_boolean *again)
4673 {
4674 struct one_fixup
4675 {
4676 struct one_fixup *next;
4677 asection *tsec;
4678 bfd_vma toff;
4679 bfd_vma trampoff;
4680 };
4681
4682 Elf_Internal_Shdr *symtab_hdr;
4683 bfd_byte *contents = NULL;
4684 Elf_Internal_Sym *isymbuf = NULL;
4685 Elf_Internal_Rela *internal_relocs = NULL;
4686 Elf_Internal_Rela *irel, *irelend;
4687 struct one_fixup *fixups = NULL;
4688 bfd_boolean changed;
4689 struct ppc_elf_link_hash_table *htab;
4690 bfd_size_type trampoff;
4691 asection *got2;
4692
4693 *again = FALSE;
4694
4695 /* Nothing to do if there are no relocations, and no need to do
4696 anything with non-alloc sections. */
4697 if ((isec->flags & SEC_ALLOC) == 0
4698 || (isec->flags & SEC_RELOC) == 0
4699 || isec->reloc_count == 0)
4700 return TRUE;
4701
4702 trampoff = (isec->size + 3) & (bfd_vma) -4;
4703 /* Space for a branch around any trampolines. */
4704 trampoff += 4;
4705
4706 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
4707
4708 /* Get a copy of the native relocations. */
4709 internal_relocs = _bfd_elf_link_read_relocs (abfd, isec, NULL, NULL,
4710 link_info->keep_memory);
4711 if (internal_relocs == NULL)
4712 goto error_return;
4713
4714 htab = ppc_elf_hash_table (link_info);
4715 got2 = bfd_get_section_by_name (abfd, ".got2");
4716
4717 irelend = internal_relocs + isec->reloc_count;
4718 for (irel = internal_relocs; irel < irelend; irel++)
4719 {
4720 unsigned long r_type = ELF32_R_TYPE (irel->r_info);
4721 bfd_vma symaddr, reladdr, toff, roff;
4722 asection *tsec;
4723 struct one_fixup *f;
4724 size_t insn_offset = 0;
4725 bfd_vma max_branch_offset, val;
4726 bfd_byte *hit_addr;
4727 unsigned long t0;
4728 unsigned char sym_type;
4729
4730 switch (r_type)
4731 {
4732 case R_PPC_REL24:
4733 case R_PPC_LOCAL24PC:
4734 case R_PPC_PLTREL24:
4735 max_branch_offset = 1 << 25;
4736 break;
4737
4738 case R_PPC_REL14:
4739 case R_PPC_REL14_BRTAKEN:
4740 case R_PPC_REL14_BRNTAKEN:
4741 max_branch_offset = 1 << 15;
4742 break;
4743
4744 default:
4745 continue;
4746 }
4747
4748 /* Get the value of the symbol referred to by the reloc. */
4749 if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
4750 {
4751 /* A local symbol. */
4752 Elf_Internal_Sym *isym;
4753
4754 /* Read this BFD's local symbols. */
4755 if (isymbuf == NULL)
4756 {
4757 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
4758 if (isymbuf == NULL)
4759 isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
4760 symtab_hdr->sh_info, 0,
4761 NULL, NULL, NULL);
4762 if (isymbuf == 0)
4763 goto error_return;
4764 }
4765 isym = isymbuf + ELF32_R_SYM (irel->r_info);
4766 if (isym->st_shndx == SHN_UNDEF)
4767 continue; /* We can't do anything with undefined symbols. */
4768 else if (isym->st_shndx == SHN_ABS)
4769 tsec = bfd_abs_section_ptr;
4770 else if (isym->st_shndx == SHN_COMMON)
4771 tsec = bfd_com_section_ptr;
4772 else
4773 tsec = bfd_section_from_elf_index (abfd, isym->st_shndx);
4774
4775 toff = isym->st_value;
4776 sym_type = ELF_ST_TYPE (isym->st_info);
4777 }
4778 else
4779 {
4780 /* Global symbol handling. */
4781 unsigned long indx;
4782 struct elf_link_hash_entry *h;
4783
4784 indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
4785 h = elf_sym_hashes (abfd)[indx];
4786
4787 while (h->root.type == bfd_link_hash_indirect
4788 || h->root.type == bfd_link_hash_warning)
4789 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4790
4791 tsec = NULL;
4792 toff = 0;
4793 if (r_type == R_PPC_PLTREL24
4794 && htab->plt != NULL)
4795 {
4796 struct plt_entry *ent = find_plt_ent (h, got2, irel->r_addend);
4797
4798 if (ent != NULL)
4799 {
4800 if (!htab->old_plt)
4801 {
4802 tsec = htab->glink;
4803 toff = ent->glink_offset;
4804 }
4805 else
4806 {
4807 tsec = htab->plt;
4808 toff = ent->plt.offset;
4809 }
4810 }
4811 }
4812 if (tsec != NULL)
4813 ;
4814 else if (h->root.type == bfd_link_hash_defined
4815 || h->root.type == bfd_link_hash_defweak)
4816 {
4817 tsec = h->root.u.def.section;
4818 toff = h->root.u.def.value;
4819 }
4820 else
4821 continue;
4822
4823 sym_type = h->type;
4824 }
4825
4826 /* If the branch and target are in the same section, you have
4827 no hope of adding stubs. We'll error out later should the
4828 branch overflow. */
4829 if (tsec == isec)
4830 continue;
4831
4832 /* There probably isn't any reason to handle symbols in
4833 SEC_MERGE sections; SEC_MERGE doesn't seem a likely
4834 attribute for a code section, and we are only looking at
4835 branches. However, implement it correctly here as a
4836 reference for other target relax_section functions. */
4837 if (0 && tsec->sec_info_type == ELF_INFO_TYPE_MERGE)
4838 {
4839 /* At this stage in linking, no SEC_MERGE symbol has been
4840 adjusted, so all references to such symbols need to be
4841 passed through _bfd_merged_section_offset. (Later, in
4842 relocate_section, all SEC_MERGE symbols *except* for
4843 section symbols have been adjusted.)
4844
4845 gas may reduce relocations against symbols in SEC_MERGE
4846 sections to a relocation against the section symbol when
4847 the original addend was zero. When the reloc is against
4848 a section symbol we should include the addend in the
4849 offset passed to _bfd_merged_section_offset, since the
4850 location of interest is the original symbol. On the
4851 other hand, an access to "sym+addend" where "sym" is not
4852 a section symbol should not include the addend; Such an
4853 access is presumed to be an offset from "sym"; The
4854 location of interest is just "sym". */
4855 if (sym_type == STT_SECTION)
4856 toff += irel->r_addend;
4857
4858 toff = _bfd_merged_section_offset (abfd, &tsec,
4859 elf_section_data (tsec)->sec_info,
4860 toff);
4861
4862 if (sym_type != STT_SECTION)
4863 toff += irel->r_addend;
4864 }
4865 /* PLTREL24 addends are special. */
4866 else if (r_type != R_PPC_PLTREL24)
4867 toff += irel->r_addend;
4868
4869 symaddr = tsec->output_section->vma + tsec->output_offset + toff;
4870
4871 roff = irel->r_offset;
4872 reladdr = isec->output_section->vma + isec->output_offset + roff;
4873
4874 /* If the branch is in range, no need to do anything. */
4875 if (symaddr - reladdr + max_branch_offset < 2 * max_branch_offset)
4876 continue;
4877
4878 /* Look for an existing fixup to this address. */
4879 for (f = fixups; f ; f = f->next)
4880 if (f->tsec == tsec && f->toff == toff)
4881 break;
4882
4883 if (f == NULL)
4884 {
4885 size_t size;
4886 unsigned long stub_rtype;
4887
4888 val = trampoff - roff;
4889 if (val >= max_branch_offset)
4890 /* Oh dear, we can't reach a trampoline. Don't try to add
4891 one. We'll report an error later. */
4892 continue;
4893
4894 if (link_info->shared)
4895 {
4896 size = 4 * ARRAY_SIZE (shared_stub_entry);
4897 insn_offset = 12;
4898 stub_rtype = R_PPC_RELAX32PC;
4899 }
4900 else
4901 {
4902 size = 4 * ARRAY_SIZE (stub_entry);
4903 insn_offset = 0;
4904 stub_rtype = R_PPC_RELAX32;
4905 }
4906
4907 if (R_PPC_RELAX32_PLT - R_PPC_RELAX32
4908 != R_PPC_RELAX32PC_PLT - R_PPC_RELAX32PC)
4909 abort ();
4910 if (tsec == htab->plt
4911 || tsec == htab->glink)
4912 stub_rtype += R_PPC_RELAX32_PLT - R_PPC_RELAX32;
4913
4914 /* Hijack the old relocation. Since we need two
4915 relocations for this use a "composite" reloc. */
4916 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
4917 stub_rtype);
4918 irel->r_offset = trampoff + insn_offset;
4919
4920 /* Record the fixup so we don't do it again this section. */
4921 f = bfd_malloc (sizeof (*f));
4922 f->next = fixups;
4923 f->tsec = tsec;
4924 f->toff = toff;
4925 f->trampoff = trampoff;
4926 fixups = f;
4927
4928 trampoff += size;
4929 }
4930 else
4931 {
4932 val = f->trampoff - roff;
4933 if (val >= max_branch_offset)
4934 continue;
4935
4936 /* Nop out the reloc, since we're finalizing things here. */
4937 irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
4938 }
4939
4940 /* Get the section contents. */
4941 if (contents == NULL)
4942 {
4943 /* Get cached copy if it exists. */
4944 if (elf_section_data (isec)->this_hdr.contents != NULL)
4945 contents = elf_section_data (isec)->this_hdr.contents;
4946 else
4947 {
4948 /* Go get them off disk. */
4949 if (!bfd_malloc_and_get_section (abfd, isec, &contents))
4950 goto error_return;
4951 }
4952 }
4953
4954 /* Fix up the existing branch to hit the trampoline. */
4955 hit_addr = contents + roff;
4956 switch (r_type)
4957 {
4958 case R_PPC_REL24:
4959 case R_PPC_LOCAL24PC:
4960 case R_PPC_PLTREL24:
4961 t0 = bfd_get_32 (abfd, hit_addr);
4962 t0 &= ~0x3fffffc;
4963 t0 |= val & 0x3fffffc;
4964 bfd_put_32 (abfd, t0, hit_addr);
4965 break;
4966
4967 case R_PPC_REL14:
4968 case R_PPC_REL14_BRTAKEN:
4969 case R_PPC_REL14_BRNTAKEN:
4970 t0 = bfd_get_32 (abfd, hit_addr);
4971 t0 &= ~0xfffc;
4972 t0 |= val & 0xfffc;
4973 bfd_put_32 (abfd, t0, hit_addr);
4974 break;
4975 }
4976 }
4977
4978 /* Write out the trampolines. */
4979 changed = fixups != NULL;
4980 if (fixups != NULL)
4981 {
4982 const int *stub;
4983 bfd_byte *dest;
4984 bfd_vma val;
4985 int i, size;
4986
4987 do
4988 {
4989 struct one_fixup *f = fixups;
4990 fixups = fixups->next;
4991 free (f);
4992 }
4993 while (fixups);
4994
4995 contents = bfd_realloc (contents, trampoff);
4996 if (contents == NULL)
4997 goto error_return;
4998
4999 isec->size = (isec->size + 3) & (bfd_vma) -4;
5000 /* Branch around the trampolines. */
5001 val = trampoff - isec->size + 0x48000000;
5002 dest = contents + isec->size;
5003 isec->size = trampoff;
5004 bfd_put_32 (abfd, val, dest);
5005 dest += 4;
5006
5007 if (link_info->shared)
5008 {
5009 stub = shared_stub_entry;
5010 size = ARRAY_SIZE (shared_stub_entry);
5011 }
5012 else
5013 {
5014 stub = stub_entry;
5015 size = ARRAY_SIZE (stub_entry);
5016 }
5017
5018 i = 0;
5019 while (dest < contents + trampoff)
5020 {
5021 bfd_put_32 (abfd, stub[i], dest);
5022 i++;
5023 if (i == size)
5024 i = 0;
5025 dest += 4;
5026 }
5027 BFD_ASSERT (i == 0);
5028 }
5029
5030 if (isymbuf != NULL
5031 && symtab_hdr->contents != (unsigned char *) isymbuf)
5032 {
5033 if (! link_info->keep_memory)
5034 free (isymbuf);
5035 else
5036 {
5037 /* Cache the symbols for elf_link_input_bfd. */
5038 symtab_hdr->contents = (unsigned char *) isymbuf;
5039 }
5040 }
5041
5042 if (contents != NULL
5043 && elf_section_data (isec)->this_hdr.contents != contents)
5044 {
5045 if (!changed && !link_info->keep_memory)
5046 free (contents);
5047 else
5048 {
5049 /* Cache the section contents for elf_link_input_bfd. */
5050 elf_section_data (isec)->this_hdr.contents = contents;
5051 }
5052 }
5053
5054 if (elf_section_data (isec)->relocs != internal_relocs)
5055 {
5056 if (!changed)
5057 free (internal_relocs);
5058 else
5059 elf_section_data (isec)->relocs = internal_relocs;
5060 }
5061
5062 *again = changed;
5063 return TRUE;
5064
5065 error_return:
5066 if (isymbuf != NULL && (unsigned char *) isymbuf != symtab_hdr->contents)
5067 free (isymbuf);
5068 if (contents != NULL
5069 && elf_section_data (isec)->this_hdr.contents != contents)
5070 free (contents);
5071 if (internal_relocs != NULL
5072 && elf_section_data (isec)->relocs != internal_relocs)
5073 free (internal_relocs);
5074 return FALSE;
5075 }
5076 \f
5077 /* Set _SDA_BASE_, _SDA2_BASE, and sbss start and end syms. They are
5078 set here rather than via PROVIDE in the default linker script,
5079 because using PROVIDE inside an output section statement results in
5080 unnecessary output sections. Using PROVIDE outside an output section
5081 statement runs the risk of section alignment affecting where the
5082 section starts. */
5083
5084 bfd_boolean
5085 ppc_elf_set_sdata_syms (bfd *obfd, struct bfd_link_info *info)
5086 {
5087 struct ppc_elf_link_hash_table *htab;
5088 unsigned i;
5089 asection *s;
5090 bfd_vma val;
5091
5092 htab = ppc_elf_hash_table (info);
5093
5094 for (i = 0; i < 2; i++)
5095 {
5096 elf_linker_section_t *lsect = &htab->sdata[i];
5097
5098 s = lsect->section;
5099 if (s != NULL)
5100 s = s->output_section;
5101 if (s == NULL)
5102 s = bfd_get_section_by_name (obfd, lsect->name);
5103 if (s == NULL)
5104 s = bfd_get_section_by_name (obfd, lsect->bss_name);
5105
5106 val = 0;
5107 if (s != NULL)
5108 val = s->vma + 32768;
5109 lsect->sym_val = val;
5110
5111 _bfd_elf_provide_symbol (info, lsect->sym_name, val);
5112 }
5113
5114 s = bfd_get_section_by_name (obfd, ".sbss");
5115 val = 0;
5116 if (s != NULL)
5117 val = s->vma;
5118 _bfd_elf_provide_symbol (info, "__sbss_start", val);
5119 _bfd_elf_provide_symbol (info, "___sbss_start", val);
5120 if (s != NULL)
5121 val += s->size;
5122 _bfd_elf_provide_symbol (info, "__sbss_end", val);
5123 _bfd_elf_provide_symbol (info, "___sbss_end", val);
5124 return TRUE;
5125 }
5126 \f
5127 /* Fill in the address for a pointer generated in a linker section. */
5128
5129 static bfd_vma
5130 elf_finish_pointer_linker_section (bfd *input_bfd,
5131 elf_linker_section_t *lsect,
5132 struct elf_link_hash_entry *h,
5133 bfd_vma relocation,
5134 const Elf_Internal_Rela *rel)
5135 {
5136 elf_linker_section_pointers_t *linker_section_ptr;
5137
5138 BFD_ASSERT (lsect != NULL);
5139
5140 if (h != NULL)
5141 {
5142 /* Handle global symbol. */
5143 struct ppc_elf_link_hash_entry *eh;
5144
5145 eh = (struct ppc_elf_link_hash_entry *) h;
5146 BFD_ASSERT (eh->elf.def_regular);
5147 linker_section_ptr = eh->linker_section_pointer;
5148 }
5149 else
5150 {
5151 /* Handle local symbol. */
5152 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
5153
5154 BFD_ASSERT (elf_local_ptr_offsets (input_bfd) != NULL);
5155 linker_section_ptr = elf_local_ptr_offsets (input_bfd)[r_symndx];
5156 }
5157
5158 linker_section_ptr = elf_find_pointer_linker_section (linker_section_ptr,
5159 rel->r_addend,
5160 lsect);
5161 BFD_ASSERT (linker_section_ptr != NULL);
5162
5163 /* Offset will always be a multiple of four, so use the bottom bit
5164 as a "written" flag. */
5165 if ((linker_section_ptr->offset & 1) == 0)
5166 {
5167 bfd_put_32 (lsect->section->owner,
5168 relocation + linker_section_ptr->addend,
5169 lsect->section->contents + linker_section_ptr->offset);
5170 linker_section_ptr->offset += 1;
5171 }
5172
5173 relocation = (lsect->section->output_offset
5174 + linker_section_ptr->offset - 1
5175 - 0x8000);
5176
5177 #ifdef DEBUG
5178 fprintf (stderr,
5179 "Finish pointer in linker section %s, offset = %ld (0x%lx)\n",
5180 lsect->name, (long) relocation, (long) relocation);
5181 #endif
5182
5183 /* Subtract out the addend, because it will get added back in by the normal
5184 processing. */
5185 return relocation - linker_section_ptr->addend;
5186 }
5187
5188 /* The RELOCATE_SECTION function is called by the ELF backend linker
5189 to handle the relocations for a section.
5190
5191 The relocs are always passed as Rela structures; if the section
5192 actually uses Rel structures, the r_addend field will always be
5193 zero.
5194
5195 This function is responsible for adjust the section contents as
5196 necessary, and (if using Rela relocs and generating a
5197 relocatable output file) adjusting the reloc addend as
5198 necessary.
5199
5200 This function does not have to worry about setting the reloc
5201 address or the reloc symbol index.
5202
5203 LOCAL_SYMS is a pointer to the swapped in local symbols.
5204
5205 LOCAL_SECTIONS is an array giving the section in the input file
5206 corresponding to the st_shndx field of each local symbol.
5207
5208 The global hash table entry for the global symbols can be found
5209 via elf_sym_hashes (input_bfd).
5210
5211 When generating relocatable output, this function must handle
5212 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
5213 going to be the section symbol corresponding to the output
5214 section, which means that the addend must be adjusted
5215 accordingly. */
5216
5217 static bfd_boolean
5218 ppc_elf_relocate_section (bfd *output_bfd,
5219 struct bfd_link_info *info,
5220 bfd *input_bfd,
5221 asection *input_section,
5222 bfd_byte *contents,
5223 Elf_Internal_Rela *relocs,
5224 Elf_Internal_Sym *local_syms,
5225 asection **local_sections)
5226 {
5227 Elf_Internal_Shdr *symtab_hdr;
5228 struct elf_link_hash_entry **sym_hashes;
5229 struct ppc_elf_link_hash_table *htab;
5230 Elf_Internal_Rela *rel;
5231 Elf_Internal_Rela *relend;
5232 Elf_Internal_Rela outrel;
5233 bfd_byte *loc;
5234 asection *got2, *sreloc = NULL;
5235 bfd_vma *local_got_offsets;
5236 bfd_boolean ret = TRUE;
5237
5238 #ifdef DEBUG
5239 _bfd_error_handler ("ppc_elf_relocate_section called for %B section %A, "
5240 "%ld relocations%s",
5241 input_bfd, input_section,
5242 (long) input_section->reloc_count,
5243 (info->relocatable) ? " (relocatable)" : "");
5244 #endif
5245
5246 got2 = bfd_get_section_by_name (input_bfd, ".got2");
5247
5248 if (info->relocatable)
5249 {
5250 if (got2 == NULL)
5251 return TRUE;
5252
5253 rel = relocs;
5254 relend = relocs + input_section->reloc_count;
5255 for (; rel < relend; rel++)
5256 {
5257 enum elf_ppc_reloc_type r_type;
5258
5259 r_type = ELF32_R_TYPE (rel->r_info);
5260 if (r_type == R_PPC_PLTREL24
5261 && rel->r_addend >= 32768)
5262 {
5263 /* R_PPC_PLTREL24 is rather special. If non-zero, the
5264 addend specifies the GOT pointer offset within .got2. */
5265 rel->r_addend += got2->output_offset;
5266 }
5267 }
5268 return TRUE;
5269 }
5270
5271 /* Initialize howto table if not already done. */
5272 if (!ppc_elf_howto_table[R_PPC_ADDR32])
5273 ppc_elf_howto_init ();
5274
5275 htab = ppc_elf_hash_table (info);
5276 local_got_offsets = elf_local_got_offsets (input_bfd);
5277 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
5278 sym_hashes = elf_sym_hashes (input_bfd);
5279 rel = relocs;
5280 relend = relocs + input_section->reloc_count;
5281 for (; rel < relend; rel++)
5282 {
5283 enum elf_ppc_reloc_type r_type;
5284 bfd_vma addend;
5285 bfd_reloc_status_type r;
5286 Elf_Internal_Sym *sym;
5287 asection *sec;
5288 struct elf_link_hash_entry *h;
5289 const char *sym_name;
5290 reloc_howto_type *howto;
5291 unsigned long r_symndx;
5292 bfd_vma relocation;
5293 bfd_vma branch_bit, insn, from;
5294 bfd_boolean unresolved_reloc;
5295 bfd_boolean warned;
5296 unsigned int tls_type, tls_mask, tls_gd;
5297
5298 r_type = ELF32_R_TYPE (rel->r_info);
5299 sym = NULL;
5300 sec = NULL;
5301 h = NULL;
5302 unresolved_reloc = FALSE;
5303 warned = FALSE;
5304 r_symndx = ELF32_R_SYM (rel->r_info);
5305
5306 if (r_symndx < symtab_hdr->sh_info)
5307 {
5308 sym = local_syms + r_symndx;
5309 sec = local_sections[r_symndx];
5310 sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
5311
5312 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
5313 }
5314 else
5315 {
5316 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
5317 r_symndx, symtab_hdr, sym_hashes,
5318 h, sec, relocation,
5319 unresolved_reloc, warned);
5320
5321 sym_name = h->root.root.string;
5322 }
5323
5324 /* TLS optimizations. Replace instruction sequences and relocs
5325 based on information we collected in tls_optimize. We edit
5326 RELOCS so that --emit-relocs will output something sensible
5327 for the final instruction stream. */
5328 tls_mask = 0;
5329 tls_gd = 0;
5330 if (IS_PPC_TLS_RELOC (r_type))
5331 {
5332 if (h != NULL)
5333 tls_mask = ((struct ppc_elf_link_hash_entry *) h)->tls_mask;
5334 else if (local_got_offsets != NULL)
5335 {
5336 char *lgot_masks;
5337 lgot_masks = (char *) (local_got_offsets + symtab_hdr->sh_info);
5338 tls_mask = lgot_masks[r_symndx];
5339 }
5340 }
5341
5342 /* Ensure reloc mapping code below stays sane. */
5343 if ((R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TLSGD16 & 3)
5344 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TLSGD16_LO & 3)
5345 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TLSGD16_HI & 3)
5346 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TLSGD16_HA & 3)
5347 || (R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TPREL16 & 3)
5348 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TPREL16_LO & 3)
5349 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TPREL16_HI & 3)
5350 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TPREL16_HA & 3))
5351 abort ();
5352 switch (r_type)
5353 {
5354 default:
5355 break;
5356
5357 case R_PPC_GOT_TPREL16:
5358 case R_PPC_GOT_TPREL16_LO:
5359 if (tls_mask != 0
5360 && (tls_mask & TLS_TPREL) == 0)
5361 {
5362 bfd_vma insn;
5363 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - 2);
5364 insn &= 31 << 21;
5365 insn |= 0x3c020000; /* addis 0,2,0 */
5366 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - 2);
5367 r_type = R_PPC_TPREL16_HA;
5368 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
5369 }
5370 break;
5371
5372 case R_PPC_TLS:
5373 if (tls_mask != 0
5374 && (tls_mask & TLS_TPREL) == 0)
5375 {
5376 bfd_vma insn, rtra;
5377 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
5378 if ((insn & ((31 << 26) | (31 << 11)))
5379 == ((31 << 26) | (2 << 11)))
5380 rtra = insn & ((1 << 26) - (1 << 16));
5381 else if ((insn & ((31 << 26) | (31 << 16)))
5382 == ((31 << 26) | (2 << 16)))
5383 rtra = (insn & (31 << 21)) | ((insn & (31 << 11)) << 5);
5384 else
5385 abort ();
5386 if ((insn & ((1 << 11) - (1 << 1))) == 266 << 1)
5387 /* add -> addi. */
5388 insn = 14 << 26;
5389 else if ((insn & (31 << 1)) == 23 << 1
5390 && ((insn & (31 << 6)) < 14 << 6
5391 || ((insn & (31 << 6)) >= 16 << 6
5392 && (insn & (31 << 6)) < 24 << 6)))
5393 /* load and store indexed -> dform. */
5394 insn = (32 | ((insn >> 6) & 31)) << 26;
5395 else if ((insn & (31 << 1)) == 21 << 1
5396 && (insn & (0x1a << 6)) == 0)
5397 /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
5398 insn = (((58 | ((insn >> 6) & 4)) << 26)
5399 | ((insn >> 6) & 1));
5400 else if ((insn & (31 << 1)) == 21 << 1
5401 && (insn & ((1 << 11) - (1 << 1))) == 341 << 1)
5402 /* lwax -> lwa. */
5403 insn = (58 << 26) | 2;
5404 else
5405 abort ();
5406 insn |= rtra;
5407 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
5408 r_type = R_PPC_TPREL16_LO;
5409 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
5410 /* Was PPC_TLS which sits on insn boundary, now
5411 PPC_TPREL16_LO which is at insn+2. */
5412 rel->r_offset += 2;
5413 }
5414 break;
5415
5416 case R_PPC_GOT_TLSGD16_HI:
5417 case R_PPC_GOT_TLSGD16_HA:
5418 tls_gd = TLS_TPRELGD;
5419 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
5420 goto tls_gdld_hi;
5421 break;
5422
5423 case R_PPC_GOT_TLSLD16_HI:
5424 case R_PPC_GOT_TLSLD16_HA:
5425 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
5426 {
5427 tls_gdld_hi:
5428 if ((tls_mask & tls_gd) != 0)
5429 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
5430 + R_PPC_GOT_TPREL16);
5431 else
5432 {
5433 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
5434 rel->r_offset -= 2;
5435 r_type = R_PPC_NONE;
5436 }
5437 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
5438 }
5439 break;
5440
5441 case R_PPC_GOT_TLSGD16:
5442 case R_PPC_GOT_TLSGD16_LO:
5443 tls_gd = TLS_TPRELGD;
5444 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
5445 goto tls_get_addr_check;
5446 break;
5447
5448 case R_PPC_GOT_TLSLD16:
5449 case R_PPC_GOT_TLSLD16_LO:
5450 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
5451 {
5452 tls_get_addr_check:
5453 if (rel + 1 < relend)
5454 {
5455 enum elf_ppc_reloc_type r_type2;
5456 unsigned long r_symndx2;
5457 struct elf_link_hash_entry *h2;
5458 bfd_vma insn1, insn2;
5459 bfd_vma offset;
5460
5461 /* The next instruction should be a call to
5462 __tls_get_addr. Peek at the reloc to be sure. */
5463 r_type2 = ELF32_R_TYPE (rel[1].r_info);
5464 r_symndx2 = ELF32_R_SYM (rel[1].r_info);
5465 if (r_symndx2 < symtab_hdr->sh_info
5466 || (r_type2 != R_PPC_REL14
5467 && r_type2 != R_PPC_REL14_BRTAKEN
5468 && r_type2 != R_PPC_REL14_BRNTAKEN
5469 && r_type2 != R_PPC_REL24
5470 && r_type2 != R_PPC_PLTREL24))
5471 break;
5472
5473 h2 = sym_hashes[r_symndx2 - symtab_hdr->sh_info];
5474 while (h2->root.type == bfd_link_hash_indirect
5475 || h2->root.type == bfd_link_hash_warning)
5476 h2 = (struct elf_link_hash_entry *) h2->root.u.i.link;
5477 if (h2 == NULL || h2 != htab->tls_get_addr)
5478 break;
5479
5480 /* OK, it checks out. Replace the call. */
5481 offset = rel[1].r_offset;
5482 insn1 = bfd_get_32 (output_bfd,
5483 contents + rel->r_offset - 2);
5484 if ((tls_mask & tls_gd) != 0)
5485 {
5486 /* IE */
5487 insn1 &= (1 << 26) - 1;
5488 insn1 |= 32 << 26; /* lwz */
5489 insn2 = 0x7c631214; /* add 3,3,2 */
5490 rel[1].r_info = ELF32_R_INFO (r_symndx2, R_PPC_NONE);
5491 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
5492 + R_PPC_GOT_TPREL16);
5493 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
5494 }
5495 else
5496 {
5497 /* LE */
5498 insn1 = 0x3c620000; /* addis 3,2,0 */
5499 insn2 = 0x38630000; /* addi 3,3,0 */
5500 if (tls_gd == 0)
5501 {
5502 /* Was an LD reloc. */
5503 r_symndx = 0;
5504 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
5505 rel[1].r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
5506 }
5507 r_type = R_PPC_TPREL16_HA;
5508 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
5509 rel[1].r_info = ELF32_R_INFO (r_symndx,
5510 R_PPC_TPREL16_LO);
5511 rel[1].r_offset += 2;
5512 }
5513 bfd_put_32 (output_bfd, insn1, contents + rel->r_offset - 2);
5514 bfd_put_32 (output_bfd, insn2, contents + offset);
5515 if (tls_gd == 0)
5516 {
5517 /* We changed the symbol on an LD reloc. Start over
5518 in order to get h, sym, sec etc. right. */
5519 rel--;
5520 continue;
5521 }
5522 }
5523 }
5524 break;
5525 }
5526
5527 /* Handle other relocations that tweak non-addend part of insn. */
5528 branch_bit = 0;
5529 switch (r_type)
5530 {
5531 default:
5532 break;
5533
5534 /* Branch taken prediction relocations. */
5535 case R_PPC_ADDR14_BRTAKEN:
5536 case R_PPC_REL14_BRTAKEN:
5537 branch_bit = BRANCH_PREDICT_BIT;
5538 /* Fall thru */
5539
5540 /* Branch not taken prediction relocations. */
5541 case R_PPC_ADDR14_BRNTAKEN:
5542 case R_PPC_REL14_BRNTAKEN:
5543 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
5544 insn &= ~BRANCH_PREDICT_BIT;
5545 insn |= branch_bit;
5546
5547 from = (rel->r_offset
5548 + input_section->output_offset
5549 + input_section->output_section->vma);
5550
5551 /* Invert 'y' bit if not the default. */
5552 if ((bfd_signed_vma) (relocation + rel->r_addend - from) < 0)
5553 insn ^= BRANCH_PREDICT_BIT;
5554
5555 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
5556 break;
5557 }
5558
5559 addend = rel->r_addend;
5560 tls_type = 0;
5561 howto = NULL;
5562 if (r_type < R_PPC_max)
5563 howto = ppc_elf_howto_table[r_type];
5564 switch (r_type)
5565 {
5566 default:
5567 (*_bfd_error_handler)
5568 (_("%B: unknown relocation type %d for symbol %s"),
5569 input_bfd, (int) r_type, sym_name);
5570
5571 bfd_set_error (bfd_error_bad_value);
5572 ret = FALSE;
5573 continue;
5574
5575 case R_PPC_NONE:
5576 case R_PPC_TLS:
5577 case R_PPC_EMB_MRKREF:
5578 case R_PPC_GNU_VTINHERIT:
5579 case R_PPC_GNU_VTENTRY:
5580 continue;
5581
5582 /* GOT16 relocations. Like an ADDR16 using the symbol's
5583 address in the GOT as relocation value instead of the
5584 symbol's value itself. Also, create a GOT entry for the
5585 symbol and put the symbol value there. */
5586 case R_PPC_GOT_TLSGD16:
5587 case R_PPC_GOT_TLSGD16_LO:
5588 case R_PPC_GOT_TLSGD16_HI:
5589 case R_PPC_GOT_TLSGD16_HA:
5590 tls_type = TLS_TLS | TLS_GD;
5591 goto dogot;
5592
5593 case R_PPC_GOT_TLSLD16:
5594 case R_PPC_GOT_TLSLD16_LO:
5595 case R_PPC_GOT_TLSLD16_HI:
5596 case R_PPC_GOT_TLSLD16_HA:
5597 tls_type = TLS_TLS | TLS_LD;
5598 goto dogot;
5599
5600 case R_PPC_GOT_TPREL16:
5601 case R_PPC_GOT_TPREL16_LO:
5602 case R_PPC_GOT_TPREL16_HI:
5603 case R_PPC_GOT_TPREL16_HA:
5604 tls_type = TLS_TLS | TLS_TPREL;
5605 goto dogot;
5606
5607 case R_PPC_GOT_DTPREL16:
5608 case R_PPC_GOT_DTPREL16_LO:
5609 case R_PPC_GOT_DTPREL16_HI:
5610 case R_PPC_GOT_DTPREL16_HA:
5611 tls_type = TLS_TLS | TLS_DTPREL;
5612 goto dogot;
5613
5614 case R_PPC_GOT16:
5615 case R_PPC_GOT16_LO:
5616 case R_PPC_GOT16_HI:
5617 case R_PPC_GOT16_HA:
5618 dogot:
5619 {
5620 /* Relocation is to the entry for this symbol in the global
5621 offset table. */
5622 bfd_vma off;
5623 bfd_vma *offp;
5624 unsigned long indx;
5625
5626 if (htab->got == NULL)
5627 abort ();
5628
5629 indx = 0;
5630 if (tls_type == (TLS_TLS | TLS_LD)
5631 && (h == NULL
5632 || !h->def_dynamic))
5633 offp = &htab->tlsld_got.offset;
5634 else if (h != NULL)
5635 {
5636 bfd_boolean dyn;
5637 dyn = htab->elf.dynamic_sections_created;
5638 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
5639 || (info->shared
5640 && SYMBOL_REFERENCES_LOCAL (info, h)))
5641 /* This is actually a static link, or it is a
5642 -Bsymbolic link and the symbol is defined
5643 locally, or the symbol was forced to be local
5644 because of a version file. */
5645 ;
5646 else
5647 {
5648 indx = h->dynindx;
5649 unresolved_reloc = FALSE;
5650 }
5651 offp = &h->got.offset;
5652 }
5653 else
5654 {
5655 if (local_got_offsets == NULL)
5656 abort ();
5657 offp = &local_got_offsets[r_symndx];
5658 }
5659
5660 /* The offset must always be a multiple of 4. We use the
5661 least significant bit to record whether we have already
5662 processed this entry. */
5663 off = *offp;
5664 if ((off & 1) != 0)
5665 off &= ~1;
5666 else
5667 {
5668 unsigned int tls_m = (tls_mask
5669 & (TLS_LD | TLS_GD | TLS_DTPREL
5670 | TLS_TPREL | TLS_TPRELGD));
5671
5672 if (offp == &htab->tlsld_got.offset)
5673 tls_m = TLS_LD;
5674 else if (h == NULL
5675 || !h->def_dynamic)
5676 tls_m &= ~TLS_LD;
5677
5678 /* We might have multiple got entries for this sym.
5679 Initialize them all. */
5680 do
5681 {
5682 int tls_ty = 0;
5683
5684 if ((tls_m & TLS_LD) != 0)
5685 {
5686 tls_ty = TLS_TLS | TLS_LD;
5687 tls_m &= ~TLS_LD;
5688 }
5689 else if ((tls_m & TLS_GD) != 0)
5690 {
5691 tls_ty = TLS_TLS | TLS_GD;
5692 tls_m &= ~TLS_GD;
5693 }
5694 else if ((tls_m & TLS_DTPREL) != 0)
5695 {
5696 tls_ty = TLS_TLS | TLS_DTPREL;
5697 tls_m &= ~TLS_DTPREL;
5698 }
5699 else if ((tls_m & (TLS_TPREL | TLS_TPRELGD)) != 0)
5700 {
5701 tls_ty = TLS_TLS | TLS_TPREL;
5702 tls_m = 0;
5703 }
5704
5705 /* Generate relocs for the dynamic linker. */
5706 if ((info->shared || indx != 0)
5707 && (h == NULL
5708 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
5709 || h->root.type != bfd_link_hash_undefweak))
5710 {
5711 outrel.r_offset = (htab->got->output_section->vma
5712 + htab->got->output_offset
5713 + off);
5714 outrel.r_addend = 0;
5715 if (tls_ty & (TLS_LD | TLS_GD))
5716 {
5717 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPMOD32);
5718 if (tls_ty == (TLS_TLS | TLS_GD))
5719 {
5720 loc = htab->relgot->contents;
5721 loc += (htab->relgot->reloc_count++
5722 * sizeof (Elf32_External_Rela));
5723 bfd_elf32_swap_reloca_out (output_bfd,
5724 &outrel, loc);
5725 outrel.r_offset += 4;
5726 outrel.r_info
5727 = ELF32_R_INFO (indx, R_PPC_DTPREL32);
5728 }
5729 }
5730 else if (tls_ty == (TLS_TLS | TLS_DTPREL))
5731 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPREL32);
5732 else if (tls_ty == (TLS_TLS | TLS_TPREL))
5733 outrel.r_info = ELF32_R_INFO (indx, R_PPC_TPREL32);
5734 else if (indx == 0)
5735 outrel.r_info = ELF32_R_INFO (indx, R_PPC_RELATIVE);
5736 else
5737 outrel.r_info = ELF32_R_INFO (indx, R_PPC_GLOB_DAT);
5738 if (indx == 0)
5739 {
5740 outrel.r_addend += relocation;
5741 if (tls_ty & (TLS_GD | TLS_DTPREL | TLS_TPREL))
5742 outrel.r_addend -= htab->elf.tls_sec->vma;
5743 }
5744 loc = htab->relgot->contents;
5745 loc += (htab->relgot->reloc_count++
5746 * sizeof (Elf32_External_Rela));
5747 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
5748 }
5749
5750 /* Init the .got section contents if we're not
5751 emitting a reloc. */
5752 else
5753 {
5754 bfd_vma value = relocation;
5755
5756 if (tls_ty == (TLS_TLS | TLS_LD))
5757 value = 1;
5758 else if (tls_ty != 0)
5759 {
5760 value -= htab->elf.tls_sec->vma + DTP_OFFSET;
5761 if (tls_ty == (TLS_TLS | TLS_TPREL))
5762 value += DTP_OFFSET - TP_OFFSET;
5763
5764 if (tls_ty == (TLS_TLS | TLS_GD))
5765 {
5766 bfd_put_32 (output_bfd, value,
5767 htab->got->contents + off + 4);
5768 value = 1;
5769 }
5770 }
5771 bfd_put_32 (output_bfd, value,
5772 htab->got->contents + off);
5773 }
5774
5775 off += 4;
5776 if (tls_ty & (TLS_LD | TLS_GD))
5777 off += 4;
5778 }
5779 while (tls_m != 0);
5780
5781 off = *offp;
5782 *offp = off | 1;
5783 }
5784
5785 if (off >= (bfd_vma) -2)
5786 abort ();
5787
5788 if ((tls_type & TLS_TLS) != 0)
5789 {
5790 if (tls_type != (TLS_TLS | TLS_LD))
5791 {
5792 if ((tls_mask & TLS_LD) != 0
5793 && !(h == NULL
5794 || !h->def_dynamic))
5795 off += 8;
5796 if (tls_type != (TLS_TLS | TLS_GD))
5797 {
5798 if ((tls_mask & TLS_GD) != 0)
5799 off += 8;
5800 if (tls_type != (TLS_TLS | TLS_DTPREL))
5801 {
5802 if ((tls_mask & TLS_DTPREL) != 0)
5803 off += 4;
5804 }
5805 }
5806 }
5807 }
5808
5809 relocation = htab->got->output_offset + off;
5810 relocation -= htab->elf.hgot->root.u.def.value;
5811
5812 /* Addends on got relocations don't make much sense.
5813 x+off@got is actually x@got+off, and since the got is
5814 generated by a hash table traversal, the value in the
5815 got at entry m+n bears little relation to the entry m. */
5816 if (addend != 0)
5817 (*_bfd_error_handler)
5818 (_("%B(%A+0x%lx): non-zero addend on %s reloc against `%s'"),
5819 input_bfd,
5820 input_section,
5821 (long) rel->r_offset,
5822 howto->name,
5823 sym_name);
5824 }
5825 break;
5826
5827 /* Relocations that need no special processing. */
5828 case R_PPC_LOCAL24PC:
5829 /* It makes no sense to point a local relocation
5830 at a symbol not in this object. */
5831 if (unresolved_reloc)
5832 {
5833 if (! (*info->callbacks->undefined_symbol) (info,
5834 h->root.root.string,
5835 input_bfd,
5836 input_section,
5837 rel->r_offset,
5838 TRUE))
5839 return FALSE;
5840 continue;
5841 }
5842 break;
5843
5844 case R_PPC_DTPREL16:
5845 case R_PPC_DTPREL16_LO:
5846 case R_PPC_DTPREL16_HI:
5847 case R_PPC_DTPREL16_HA:
5848 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
5849 break;
5850
5851 /* Relocations that may need to be propagated if this is a shared
5852 object. */
5853 case R_PPC_TPREL16:
5854 case R_PPC_TPREL16_LO:
5855 case R_PPC_TPREL16_HI:
5856 case R_PPC_TPREL16_HA:
5857 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
5858 /* The TPREL16 relocs shouldn't really be used in shared
5859 libs as they will result in DT_TEXTREL being set, but
5860 support them anyway. */
5861 goto dodyn;
5862
5863 case R_PPC_TPREL32:
5864 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
5865 goto dodyn;
5866
5867 case R_PPC_DTPREL32:
5868 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
5869 goto dodyn;
5870
5871 case R_PPC_DTPMOD32:
5872 relocation = 1;
5873 addend = 0;
5874 goto dodyn;
5875
5876 case R_PPC_REL16:
5877 case R_PPC_REL16_LO:
5878 case R_PPC_REL16_HI:
5879 case R_PPC_REL16_HA:
5880 break;
5881
5882 case R_PPC_REL24:
5883 case R_PPC_REL32:
5884 case R_PPC_REL14:
5885 case R_PPC_REL14_BRTAKEN:
5886 case R_PPC_REL14_BRNTAKEN:
5887 /* If these relocations are not to a named symbol, they can be
5888 handled right here, no need to bother the dynamic linker. */
5889 if (SYMBOL_REFERENCES_LOCAL (info, h)
5890 || h == htab->elf.hgot)
5891 break;
5892 /* fall through */
5893
5894 /* Relocations that always need to be propagated if this is a shared
5895 object. */
5896 case R_PPC_ADDR32:
5897 case R_PPC_ADDR24:
5898 case R_PPC_ADDR16:
5899 case R_PPC_ADDR16_LO:
5900 case R_PPC_ADDR16_HI:
5901 case R_PPC_ADDR16_HA:
5902 case R_PPC_ADDR14:
5903 case R_PPC_ADDR14_BRTAKEN:
5904 case R_PPC_ADDR14_BRNTAKEN:
5905 case R_PPC_UADDR32:
5906 case R_PPC_UADDR16:
5907 /* r_symndx will be zero only for relocs against symbols
5908 from removed linkonce sections, or sections discarded by
5909 a linker script. */
5910 dodyn:
5911 if (r_symndx == 0)
5912 break;
5913 /* Fall thru. */
5914
5915 if ((input_section->flags & SEC_ALLOC) == 0)
5916 break;
5917 /* Fall thru. */
5918
5919 if ((info->shared
5920 && (h == NULL
5921 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
5922 || h->root.type != bfd_link_hash_undefweak)
5923 && (MUST_BE_DYN_RELOC (r_type)
5924 || !SYMBOL_CALLS_LOCAL (info, h)))
5925 || (ELIMINATE_COPY_RELOCS
5926 && !info->shared
5927 && h != NULL
5928 && h->dynindx != -1
5929 && !h->non_got_ref
5930 && h->def_dynamic
5931 && !h->def_regular))
5932 {
5933 int skip;
5934
5935 #ifdef DEBUG
5936 fprintf (stderr, "ppc_elf_relocate_section needs to "
5937 "create relocation for %s\n",
5938 (h && h->root.root.string
5939 ? h->root.root.string : "<unknown>"));
5940 #endif
5941
5942 /* When generating a shared object, these relocations
5943 are copied into the output file to be resolved at run
5944 time. */
5945 if (sreloc == NULL)
5946 {
5947 const char *name;
5948
5949 name = (bfd_elf_string_from_elf_section
5950 (input_bfd,
5951 elf_elfheader (input_bfd)->e_shstrndx,
5952 elf_section_data (input_section)->rel_hdr.sh_name));
5953 if (name == NULL)
5954 return FALSE;
5955
5956 BFD_ASSERT (strncmp (name, ".rela", 5) == 0
5957 && strcmp (bfd_get_section_name (input_bfd,
5958 input_section),
5959 name + 5) == 0);
5960
5961 sreloc = bfd_get_section_by_name (htab->elf.dynobj, name);
5962 BFD_ASSERT (sreloc != NULL);
5963 }
5964
5965 skip = 0;
5966
5967 outrel.r_offset =
5968 _bfd_elf_section_offset (output_bfd, info, input_section,
5969 rel->r_offset);
5970 if (outrel.r_offset == (bfd_vma) -1
5971 || outrel.r_offset == (bfd_vma) -2)
5972 skip = (int) outrel.r_offset;
5973 outrel.r_offset += (input_section->output_section->vma
5974 + input_section->output_offset);
5975
5976 if (skip)
5977 memset (&outrel, 0, sizeof outrel);
5978 else if (!SYMBOL_REFERENCES_LOCAL (info, h))
5979 {
5980 unresolved_reloc = FALSE;
5981 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
5982 outrel.r_addend = rel->r_addend;
5983 }
5984 else
5985 {
5986 outrel.r_addend = relocation + rel->r_addend;
5987
5988 if (r_type == R_PPC_ADDR32)
5989 outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
5990 else
5991 {
5992 long indx;
5993
5994 if (bfd_is_abs_section (sec))
5995 indx = 0;
5996 else if (sec == NULL || sec->owner == NULL)
5997 {
5998 bfd_set_error (bfd_error_bad_value);
5999 return FALSE;
6000 }
6001 else
6002 {
6003 asection *osec;
6004
6005 /* We are turning this relocation into one
6006 against a section symbol. It would be
6007 proper to subtract the symbol's value,
6008 osec->vma, from the emitted reloc addend,
6009 but ld.so expects buggy relocs. */
6010 osec = sec->output_section;
6011 indx = elf_section_data (osec)->dynindx;
6012 BFD_ASSERT (indx > 0);
6013 #ifdef DEBUG
6014 if (indx <= 0)
6015 printf ("indx=%d section=%s flags=%08x name=%s\n",
6016 indx, osec->name, osec->flags,
6017 h->root.root.string);
6018 #endif
6019 }
6020
6021 outrel.r_info = ELF32_R_INFO (indx, r_type);
6022 }
6023 }
6024
6025 loc = sreloc->contents;
6026 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
6027 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
6028
6029 if (skip == -1)
6030 continue;
6031
6032 /* This reloc will be computed at runtime. We clear the memory
6033 so that it contains predictable value. */
6034 if (! skip
6035 && ((input_section->flags & SEC_ALLOC) != 0
6036 || ELF32_R_TYPE (outrel.r_info) != R_PPC_RELATIVE))
6037 {
6038 relocation = howto->pc_relative ? outrel.r_offset : 0;
6039 addend = 0;
6040 break;
6041 }
6042 }
6043 break;
6044
6045 case R_PPC_RELAX32PC_PLT:
6046 case R_PPC_RELAX32_PLT:
6047 {
6048 struct plt_entry *ent = find_plt_ent (h, got2, addend);
6049
6050 if (!htab->old_plt)
6051 relocation = (htab->glink->output_section->vma
6052 + htab->glink->output_offset
6053 + ent->glink_offset);
6054 else
6055 relocation = (htab->plt->output_section->vma
6056 + htab->plt->output_offset
6057 + ent->plt.offset);
6058 addend = 0;
6059 }
6060 if (r_type == R_PPC_RELAX32_PLT)
6061 goto relax32;
6062 /* Fall thru */
6063
6064 case R_PPC_RELAX32PC:
6065 relocation -= (input_section->output_section->vma
6066 + input_section->output_offset
6067 + rel->r_offset - 4);
6068 /* Fall thru */
6069
6070 case R_PPC_RELAX32:
6071 relax32:
6072 {
6073 unsigned long t0;
6074 unsigned long t1;
6075
6076 t0 = bfd_get_32 (output_bfd, contents + rel->r_offset);
6077 t1 = bfd_get_32 (output_bfd, contents + rel->r_offset + 4);
6078
6079 /* We're clearing the bits for R_PPC_ADDR16_HA
6080 and R_PPC_ADDR16_LO here. */
6081 t0 &= ~0xffff;
6082 t1 &= ~0xffff;
6083
6084 /* t0 is HA, t1 is LO */
6085 relocation += addend;
6086 t0 |= ((relocation + 0x8000) >> 16) & 0xffff;
6087 t1 |= relocation & 0xffff;
6088
6089 bfd_put_32 (output_bfd, t0, contents + rel->r_offset);
6090 bfd_put_32 (output_bfd, t1, contents + rel->r_offset + 4);
6091 }
6092 continue;
6093
6094 /* Indirect .sdata relocation. */
6095 case R_PPC_EMB_SDAI16:
6096 BFD_ASSERT (htab->sdata[0].section != NULL);
6097 relocation
6098 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[0],
6099 h, relocation, rel);
6100 break;
6101
6102 /* Indirect .sdata2 relocation. */
6103 case R_PPC_EMB_SDA2I16:
6104 BFD_ASSERT (htab->sdata[1].section != NULL);
6105 relocation
6106 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[1],
6107 h, relocation, rel);
6108 break;
6109
6110 /* Handle the TOC16 reloc. We want to use the offset within the .got
6111 section, not the actual VMA. This is appropriate when generating
6112 an embedded ELF object, for which the .got section acts like the
6113 AIX .toc section. */
6114 case R_PPC_TOC16: /* phony GOT16 relocations */
6115 BFD_ASSERT (sec != NULL);
6116 BFD_ASSERT (bfd_is_und_section (sec)
6117 || strcmp (bfd_get_section_name (abfd, sec), ".got") == 0
6118 || strcmp (bfd_get_section_name (abfd, sec), ".cgot") == 0);
6119
6120 addend -= sec->output_section->vma + sec->output_offset + 0x8000;
6121 break;
6122
6123 case R_PPC_PLTREL24:
6124 /* Relocation is to the entry for this symbol in the
6125 procedure linkage table. */
6126 {
6127 struct plt_entry *ent = find_plt_ent (h, got2, addend);
6128
6129 addend = 0;
6130 if (ent == NULL
6131 || htab->plt == NULL)
6132 {
6133 /* We didn't make a PLT entry for this symbol. This
6134 happens when statically linking PIC code, or when
6135 using -Bsymbolic. */
6136 break;
6137 }
6138
6139 unresolved_reloc = FALSE;
6140 if (!htab->old_plt)
6141 relocation = (htab->glink->output_section->vma
6142 + htab->glink->output_offset
6143 + ent->glink_offset);
6144 else
6145 relocation = (htab->plt->output_section->vma
6146 + htab->plt->output_offset
6147 + ent->plt.offset);
6148 }
6149 break;
6150
6151 /* Relocate against _SDA_BASE_. */
6152 case R_PPC_SDAREL16:
6153 {
6154 const char *name;
6155
6156 BFD_ASSERT (sec != NULL);
6157 name = bfd_get_section_name (abfd, sec->output_section);
6158 if (! ((strncmp (name, ".sdata", 6) == 0
6159 && (name[6] == 0 || name[6] == '.'))
6160 || (strncmp (name, ".sbss", 5) == 0
6161 && (name[5] == 0 || name[5] == '.'))))
6162 {
6163 (*_bfd_error_handler)
6164 (_("%B: the target (%s) of a %s relocation is "
6165 "in the wrong output section (%s)"),
6166 input_bfd,
6167 sym_name,
6168 howto->name,
6169 name);
6170 }
6171 addend -= htab->sdata[0].sym_val;
6172 }
6173 break;
6174
6175 /* Relocate against _SDA2_BASE_. */
6176 case R_PPC_EMB_SDA2REL:
6177 {
6178 const char *name;
6179
6180 BFD_ASSERT (sec != NULL);
6181 name = bfd_get_section_name (abfd, sec->output_section);
6182 if (! (strncmp (name, ".sdata2", 7) == 0
6183 || strncmp (name, ".sbss2", 6) == 0))
6184 {
6185 (*_bfd_error_handler)
6186 (_("%B: the target (%s) of a %s relocation is "
6187 "in the wrong output section (%s)"),
6188 input_bfd,
6189 sym_name,
6190 howto->name,
6191 name);
6192
6193 bfd_set_error (bfd_error_bad_value);
6194 ret = FALSE;
6195 continue;
6196 }
6197 addend -= htab->sdata[1].sym_val;
6198 }
6199 break;
6200
6201 /* Relocate against either _SDA_BASE_, _SDA2_BASE_, or 0. */
6202 case R_PPC_EMB_SDA21:
6203 case R_PPC_EMB_RELSDA:
6204 {
6205 const char *name;
6206 int reg;
6207
6208 BFD_ASSERT (sec != NULL);
6209 name = bfd_get_section_name (abfd, sec->output_section);
6210 if (((strncmp (name, ".sdata", 6) == 0
6211 && (name[6] == 0 || name[6] == '.'))
6212 || (strncmp (name, ".sbss", 5) == 0
6213 && (name[5] == 0 || name[5] == '.'))))
6214 {
6215 reg = 13;
6216 addend -= htab->sdata[0].sym_val;
6217 }
6218
6219 else if (strncmp (name, ".sdata2", 7) == 0
6220 || strncmp (name, ".sbss2", 6) == 0)
6221 {
6222 reg = 2;
6223 addend -= htab->sdata[1].sym_val;
6224 }
6225
6226 else if (strcmp (name, ".PPC.EMB.sdata0") == 0
6227 || strcmp (name, ".PPC.EMB.sbss0") == 0)
6228 {
6229 reg = 0;
6230 }
6231
6232 else
6233 {
6234 (*_bfd_error_handler)
6235 (_("%B: the target (%s) of a %s relocation is "
6236 "in the wrong output section (%s)"),
6237 input_bfd,
6238 sym_name,
6239 howto->name,
6240 name);
6241
6242 bfd_set_error (bfd_error_bad_value);
6243 ret = FALSE;
6244 continue;
6245 }
6246
6247 if (r_type == R_PPC_EMB_SDA21)
6248 { /* fill in register field */
6249 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
6250 insn = (insn & ~RA_REGISTER_MASK) | (reg << RA_REGISTER_SHIFT);
6251 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
6252 }
6253 }
6254 break;
6255
6256 /* Relocate against the beginning of the section. */
6257 case R_PPC_SECTOFF:
6258 case R_PPC_SECTOFF_LO:
6259 case R_PPC_SECTOFF_HI:
6260 case R_PPC_SECTOFF_HA:
6261 BFD_ASSERT (sec != NULL);
6262 addend -= sec->output_section->vma;
6263 break;
6264
6265 /* Negative relocations. */
6266 case R_PPC_EMB_NADDR32:
6267 case R_PPC_EMB_NADDR16:
6268 case R_PPC_EMB_NADDR16_LO:
6269 case R_PPC_EMB_NADDR16_HI:
6270 case R_PPC_EMB_NADDR16_HA:
6271 addend -= 2 * relocation;
6272 break;
6273
6274 case R_PPC_COPY:
6275 case R_PPC_GLOB_DAT:
6276 case R_PPC_JMP_SLOT:
6277 case R_PPC_RELATIVE:
6278 case R_PPC_PLT32:
6279 case R_PPC_PLTREL32:
6280 case R_PPC_PLT16_LO:
6281 case R_PPC_PLT16_HI:
6282 case R_PPC_PLT16_HA:
6283 case R_PPC_ADDR30:
6284 case R_PPC_EMB_RELSEC16:
6285 case R_PPC_EMB_RELST_LO:
6286 case R_PPC_EMB_RELST_HI:
6287 case R_PPC_EMB_RELST_HA:
6288 case R_PPC_EMB_BIT_FLD:
6289 (*_bfd_error_handler)
6290 (_("%B: relocation %s is not yet supported for symbol %s."),
6291 input_bfd,
6292 howto->name,
6293 sym_name);
6294
6295 bfd_set_error (bfd_error_invalid_operation);
6296 ret = FALSE;
6297 continue;
6298 }
6299
6300 /* Do any further special processing. */
6301 switch (r_type)
6302 {
6303 default:
6304 break;
6305
6306 case R_PPC_ADDR16_HA:
6307 case R_PPC_REL16_HA:
6308 case R_PPC_GOT16_HA:
6309 case R_PPC_PLT16_HA:
6310 case R_PPC_SECTOFF_HA:
6311 case R_PPC_TPREL16_HA:
6312 case R_PPC_DTPREL16_HA:
6313 case R_PPC_GOT_TLSGD16_HA:
6314 case R_PPC_GOT_TLSLD16_HA:
6315 case R_PPC_GOT_TPREL16_HA:
6316 case R_PPC_GOT_DTPREL16_HA:
6317 case R_PPC_EMB_NADDR16_HA:
6318 case R_PPC_EMB_RELST_HA:
6319 /* It's just possible that this symbol is a weak symbol
6320 that's not actually defined anywhere. In that case,
6321 'sec' would be NULL, and we should leave the symbol
6322 alone (it will be set to zero elsewhere in the link). */
6323 if (sec != NULL)
6324 /* Add 0x10000 if sign bit in 0:15 is set.
6325 Bits 0:15 are not used. */
6326 addend += 0x8000;
6327 break;
6328 }
6329
6330 #ifdef DEBUG
6331 fprintf (stderr, "\ttype = %s (%d), name = %s, symbol index = %ld, "
6332 "offset = %ld, addend = %ld\n",
6333 howto->name,
6334 (int) r_type,
6335 sym_name,
6336 r_symndx,
6337 (long) rel->r_offset,
6338 (long) addend);
6339 #endif
6340
6341 if (unresolved_reloc
6342 && !((input_section->flags & SEC_DEBUGGING) != 0
6343 && h->def_dynamic))
6344 {
6345 (*_bfd_error_handler)
6346 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
6347 input_bfd,
6348 input_section,
6349 (long) rel->r_offset,
6350 howto->name,
6351 sym_name);
6352 ret = FALSE;
6353 }
6354
6355 r = _bfd_final_link_relocate (howto,
6356 input_bfd,
6357 input_section,
6358 contents,
6359 rel->r_offset,
6360 relocation,
6361 addend);
6362
6363 if (r != bfd_reloc_ok)
6364 {
6365 if (r == bfd_reloc_overflow)
6366 {
6367 if (warned)
6368 continue;
6369 if (h != NULL
6370 && h->root.type == bfd_link_hash_undefweak
6371 && howto->pc_relative)
6372 {
6373 /* Assume this is a call protected by other code that
6374 detect the symbol is undefined. If this is the case,
6375 we can safely ignore the overflow. If not, the
6376 program is hosed anyway, and a little warning isn't
6377 going to help. */
6378
6379 continue;
6380 }
6381
6382 if (! (*info->callbacks->reloc_overflow) (info,
6383 (h ? &h->root : NULL),
6384 sym_name,
6385 howto->name,
6386 rel->r_addend,
6387 input_bfd,
6388 input_section,
6389 rel->r_offset))
6390 return FALSE;
6391 }
6392 else
6393 {
6394 (*_bfd_error_handler)
6395 (_("%B(%A+0x%lx): %s reloc against `%s': error %d"),
6396 input_bfd, input_section,
6397 (long) rel->r_offset, howto->name, sym_name, (int) r);
6398 ret = FALSE;
6399 }
6400 }
6401 }
6402
6403 #ifdef DEBUG
6404 fprintf (stderr, "\n");
6405 #endif
6406
6407 return ret;
6408 }
6409 \f
6410 #define PPC_LO(v) ((v) & 0xffff)
6411 #define PPC_HI(v) (((v) >> 16) & 0xffff)
6412 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
6413
6414 /* Finish up dynamic symbol handling. We set the contents of various
6415 dynamic sections here. */
6416
6417 static bfd_boolean
6418 ppc_elf_finish_dynamic_symbol (bfd *output_bfd,
6419 struct bfd_link_info *info,
6420 struct elf_link_hash_entry *h,
6421 Elf_Internal_Sym *sym)
6422 {
6423 struct ppc_elf_link_hash_table *htab;
6424 struct plt_entry *ent;
6425 bfd_boolean doneone;
6426
6427 #ifdef DEBUG
6428 fprintf (stderr, "ppc_elf_finish_dynamic_symbol called for %s",
6429 h->root.root.string);
6430 #endif
6431
6432 htab = ppc_elf_hash_table (info);
6433 BFD_ASSERT (htab->elf.dynobj != NULL);
6434
6435 doneone = FALSE;
6436 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
6437 if (ent->plt.offset != (bfd_vma) -1)
6438 {
6439 if (!doneone)
6440 {
6441 Elf_Internal_Rela rela;
6442 bfd_byte *loc;
6443 bfd_vma reloc_index;
6444
6445 /* This symbol has an entry in the procedure linkage table.
6446 Set it up. */
6447 if (htab->old_plt)
6448 {
6449 /* We don't need to fill in the .plt. The ppc dynamic
6450 linker will fill it in. */
6451 }
6452 else
6453 {
6454 bfd_vma val = (htab->glink_pltresolve + ent->plt.offset
6455 + htab->glink->output_section->vma
6456 + htab->glink->output_offset);
6457 bfd_put_32 (output_bfd, val,
6458 htab->plt->contents + ent->plt.offset);
6459 }
6460
6461 /* Fill in the entry in the .rela.plt section. */
6462 rela.r_offset = (htab->plt->output_section->vma
6463 + htab->plt->output_offset
6464 + ent->plt.offset);
6465 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_JMP_SLOT);
6466 rela.r_addend = 0;
6467
6468 if (!htab->old_plt)
6469 reloc_index = ent->plt.offset / 4;
6470 else
6471 {
6472 reloc_index = ((ent->plt.offset - PLT_INITIAL_ENTRY_SIZE)
6473 / PLT_SLOT_SIZE);
6474 if (reloc_index > PLT_NUM_SINGLE_ENTRIES)
6475 reloc_index -= (reloc_index - PLT_NUM_SINGLE_ENTRIES) / 2;
6476 }
6477 loc = (htab->relplt->contents
6478 + reloc_index * sizeof (Elf32_External_Rela));
6479 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
6480
6481 if (!h->def_regular)
6482 {
6483 /* Mark the symbol as undefined, rather than as defined in
6484 the .plt section. Leave the value alone. */
6485 sym->st_shndx = SHN_UNDEF;
6486 /* If the symbol is weak, we do need to clear the value.
6487 Otherwise, the PLT entry would provide a definition for
6488 the symbol even if the symbol wasn't defined anywhere,
6489 and so the symbol would never be NULL. */
6490 if (!h->ref_regular_nonweak)
6491 sym->st_value = 0;
6492 }
6493 doneone = TRUE;
6494 }
6495
6496 if (!htab->old_plt)
6497 {
6498 bfd_vma plt;
6499 unsigned char *p;
6500
6501 plt = (ent->plt.offset
6502 + htab->plt->output_section->vma
6503 + htab->plt->output_offset);
6504 p = (unsigned char *) htab->glink->contents + ent->glink_offset;
6505
6506 if (info->shared || info->pie)
6507 {
6508 bfd_vma got = 0;
6509
6510 if (ent->addend >= 32768)
6511 got = (ent->addend
6512 + ent->sec->output_section->vma
6513 + ent->sec->output_offset);
6514 else if (htab->elf.hgot != NULL)
6515 got = (htab->elf.hgot->root.u.def.value
6516 + htab->elf.hgot->root.u.def.section->output_section->vma
6517 + htab->elf.hgot->root.u.def.section->output_offset);
6518
6519 plt -= got;
6520
6521 if (plt + 0x8000 < 0x10000)
6522 {
6523 bfd_put_32 (output_bfd, LWZ_11_30 + PPC_LO (plt), p);
6524 p += 4;
6525 bfd_put_32 (output_bfd, MTCTR_11, p);
6526 p += 4;
6527 bfd_put_32 (output_bfd, BCTR, p);
6528 p += 4;
6529 bfd_put_32 (output_bfd, NOP, p);
6530 p += 4;
6531 }
6532 else
6533 {
6534 bfd_put_32 (output_bfd, ADDIS_11_30 + PPC_HA (plt), p);
6535 p += 4;
6536 bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
6537 p += 4;
6538 bfd_put_32 (output_bfd, MTCTR_11, p);
6539 p += 4;
6540 bfd_put_32 (output_bfd, BCTR, p);
6541 p += 4;
6542 }
6543 }
6544 else
6545 {
6546 bfd_put_32 (output_bfd, LIS_11 + PPC_HA (plt), p);
6547 p += 4;
6548 bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
6549 p += 4;
6550 bfd_put_32 (output_bfd, MTCTR_11, p);
6551 p += 4;
6552 bfd_put_32 (output_bfd, BCTR, p);
6553 p += 4;
6554
6555 /* We only need one non-PIC glink stub. */
6556 break;
6557 }
6558 }
6559 else
6560 break;
6561 }
6562
6563 if (h->needs_copy)
6564 {
6565 asection *s;
6566 Elf_Internal_Rela rela;
6567 bfd_byte *loc;
6568
6569 /* This symbols needs a copy reloc. Set it up. */
6570
6571 #ifdef DEBUG
6572 fprintf (stderr, ", copy");
6573 #endif
6574
6575 BFD_ASSERT (h->dynindx != -1);
6576
6577 if (ppc_elf_hash_entry (h)->has_sda_refs)
6578 s = htab->relsbss;
6579 else
6580 s = htab->relbss;
6581 BFD_ASSERT (s != NULL);
6582
6583 rela.r_offset = (h->root.u.def.value
6584 + h->root.u.def.section->output_section->vma
6585 + h->root.u.def.section->output_offset);
6586 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_COPY);
6587 rela.r_addend = 0;
6588 loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
6589 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
6590 }
6591
6592 #ifdef DEBUG
6593 fprintf (stderr, "\n");
6594 #endif
6595
6596 /* Mark some specially defined symbols as absolute. */
6597 if (h == htab->elf.hgot
6598 || strcmp (h->root.root.string, "_DYNAMIC") == 0
6599 || strcmp (h->root.root.string, "_PROCEDURE_LINKAGE_TABLE_") == 0)
6600 sym->st_shndx = SHN_ABS;
6601
6602 return TRUE;
6603 }
6604 \f
6605 static enum elf_reloc_type_class
6606 ppc_elf_reloc_type_class (const Elf_Internal_Rela *rela)
6607 {
6608 switch (ELF32_R_TYPE (rela->r_info))
6609 {
6610 case R_PPC_RELATIVE:
6611 return reloc_class_relative;
6612 case R_PPC_REL24:
6613 case R_PPC_ADDR24:
6614 case R_PPC_JMP_SLOT:
6615 return reloc_class_plt;
6616 case R_PPC_COPY:
6617 return reloc_class_copy;
6618 default:
6619 return reloc_class_normal;
6620 }
6621 }
6622 \f
6623 /* Finish up the dynamic sections. */
6624
6625 static bfd_boolean
6626 ppc_elf_finish_dynamic_sections (bfd *output_bfd,
6627 struct bfd_link_info *info)
6628 {
6629 asection *sdyn;
6630 struct ppc_elf_link_hash_table *htab;
6631 bfd_vma got;
6632
6633 #ifdef DEBUG
6634 fprintf (stderr, "ppc_elf_finish_dynamic_sections called\n");
6635 #endif
6636
6637 htab = ppc_elf_hash_table (info);
6638 sdyn = bfd_get_section_by_name (htab->elf.dynobj, ".dynamic");
6639
6640 got = 0;
6641 if (htab->elf.hgot != NULL)
6642 got = (htab->elf.hgot->root.u.def.value
6643 + htab->elf.hgot->root.u.def.section->output_section->vma
6644 + htab->elf.hgot->root.u.def.section->output_offset);
6645
6646 if (htab->elf.dynamic_sections_created)
6647 {
6648 Elf32_External_Dyn *dyncon, *dynconend;
6649
6650 BFD_ASSERT (htab->plt != NULL && sdyn != NULL);
6651
6652 dyncon = (Elf32_External_Dyn *) sdyn->contents;
6653 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
6654 for (; dyncon < dynconend; dyncon++)
6655 {
6656 Elf_Internal_Dyn dyn;
6657 asection *s;
6658
6659 bfd_elf32_swap_dyn_in (htab->elf.dynobj, dyncon, &dyn);
6660
6661 switch (dyn.d_tag)
6662 {
6663 case DT_PLTGOT:
6664 s = htab->plt;
6665 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
6666 break;
6667
6668 case DT_PLTRELSZ:
6669 dyn.d_un.d_val = htab->relplt->size;
6670 break;
6671
6672 case DT_JMPREL:
6673 s = htab->relplt;
6674 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
6675 break;
6676
6677 case DT_PPC_GOT:
6678 dyn.d_un.d_ptr = got;
6679 break;
6680
6681 default:
6682 continue;
6683 }
6684
6685 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
6686 }
6687 }
6688
6689 /* Add a blrl instruction at _GLOBAL_OFFSET_TABLE_-4 so that a function can
6690 easily find the address of the _GLOBAL_OFFSET_TABLE_. */
6691 if (htab->got != NULL)
6692 {
6693 unsigned char *p = htab->got->contents;
6694 bfd_vma val;
6695
6696 p += elf_hash_table (info)->hgot->root.u.def.value;
6697 if (htab->old_plt)
6698 bfd_put_32 (output_bfd, 0x4e800021 /* blrl */, p - 4);
6699
6700 val = 0;
6701 if (sdyn != NULL)
6702 val = sdyn->output_section->vma + sdyn->output_offset;
6703 bfd_put_32 (output_bfd, val, p);
6704
6705 elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 4;
6706 }
6707
6708 if (htab->glink != NULL && htab->glink->contents != NULL)
6709 {
6710 unsigned char *p;
6711 unsigned char *endp;
6712 bfd_vma res0;
6713 unsigned int i;
6714
6715 /*
6716 * PIC glink code is the following:
6717 *
6718 * # ith PLT code stub.
6719 * addis 11,30,(plt+(i-1)*4-got)@ha
6720 * lwz 11,(plt+(i-1)*4-got)@l(11)
6721 * mtctr 11
6722 * bctr
6723 *
6724 * # A table of branches, one for each plt entry.
6725 * # The idea is that the plt call stub loads ctr (and r11) with these
6726 * # addresses, so (r11 - res_0) gives the plt index * 4.
6727 * res_0: b PLTresolve
6728 * res_1: b PLTresolve
6729 * .
6730 * # Some number of entries towards the end can be nops
6731 * res_n_m3: nop
6732 * res_n_m2: nop
6733 * res_n_m1:
6734 *
6735 * PLTresolve:
6736 * addis 11,11,(1f-res_0)@ha
6737 * mflr 0
6738 * bcl 20,31,1f
6739 * 1: addi 11,11,(1b-res_0)@l
6740 * mflr 12
6741 * mtlr 0
6742 * sub 11,11,12 # r11 = index * 4
6743 * addis 12,12,(got+4-1b)@ha
6744 * lwz 0,(got+4-1b)@l(12) # got[1] address of dl_runtime_resolve
6745 * lwz 12,(got+8-1b)@l(12) # got[2] contains the map address
6746 * mtctr 0
6747 * add 0,11,11
6748 * add 11,0,11 # r11 = index * 12 = reloc offset.
6749 * bctr
6750 */
6751 static const unsigned int pic_plt_resolve[] =
6752 {
6753 ADDIS_11_11,
6754 MFLR_0,
6755 BCL_20_31,
6756 ADDI_11_11,
6757 MFLR_12,
6758 MTLR_0,
6759 SUB_11_11_12,
6760 ADDIS_12_12,
6761 LWZ_0_12,
6762 LWZ_12_12,
6763 MTCTR_0,
6764 ADD_0_11_11,
6765 ADD_11_0_11,
6766 BCTR,
6767 NOP,
6768 NOP
6769 };
6770
6771 static const unsigned int plt_resolve[] =
6772 {
6773 LIS_12,
6774 ADDIS_11_11,
6775 LWZ_0_12,
6776 ADDI_11_11,
6777 MTCTR_0,
6778 ADD_0_11_11,
6779 LWZ_12_12,
6780 ADD_11_0_11,
6781 BCTR,
6782 NOP,
6783 NOP,
6784 NOP,
6785 NOP,
6786 NOP,
6787 NOP,
6788 NOP
6789 };
6790
6791 if (ARRAY_SIZE (pic_plt_resolve) != GLINK_PLTRESOLVE / 4)
6792 abort ();
6793 if (ARRAY_SIZE (plt_resolve) != GLINK_PLTRESOLVE / 4)
6794 abort ();
6795
6796 /* Build the branch table, one for each plt entry (less one),
6797 and perhaps some padding. */
6798 p = htab->glink->contents;
6799 p += htab->glink_pltresolve;
6800 endp = htab->glink->contents;
6801 endp += htab->glink->size - GLINK_PLTRESOLVE;
6802 while (p < endp - 8 * 4)
6803 {
6804 bfd_put_32 (output_bfd, B + endp - p, p);
6805 p += 4;
6806 }
6807 while (p < endp)
6808 {
6809 bfd_put_32 (output_bfd, NOP, p);
6810 p += 4;
6811 }
6812
6813 res0 = (htab->glink_pltresolve
6814 + htab->glink->output_section->vma
6815 + htab->glink->output_offset);
6816
6817 /* Last comes the PLTresolve stub. */
6818 if (info->shared || info->pie)
6819 {
6820 bfd_vma bcl;
6821
6822 for (i = 0; i < ARRAY_SIZE (pic_plt_resolve); i++)
6823 {
6824 bfd_put_32 (output_bfd, pic_plt_resolve[i], p);
6825 p += 4;
6826 }
6827 p -= 4 * ARRAY_SIZE (pic_plt_resolve);
6828
6829 bcl = (htab->glink->size - GLINK_PLTRESOLVE + 3*4
6830 + htab->glink->output_section->vma
6831 + htab->glink->output_offset);
6832
6833 bfd_put_32 (output_bfd,
6834 ADDIS_11_11 + PPC_HA (bcl - res0), p + 0*4);
6835 bfd_put_32 (output_bfd,
6836 ADDI_11_11 + PPC_LO (bcl - res0), p + 3*4);
6837 bfd_put_32 (output_bfd,
6838 ADDIS_12_12 + PPC_HA (got + 4 - bcl), p + 7*4);
6839 if (PPC_HA (got + 4 - bcl) == PPC_HA (got + 8 - bcl))
6840 {
6841 bfd_put_32 (output_bfd,
6842 LWZ_0_12 + PPC_LO (got + 4 - bcl), p + 8*4);
6843 bfd_put_32 (output_bfd,
6844 LWZ_12_12 + PPC_LO (got + 8 - bcl), p + 9*4);
6845 }
6846 else
6847 {
6848 bfd_put_32 (output_bfd,
6849 LWZU_0_12 + PPC_LO (got + 4 - bcl), p + 8*4);
6850 bfd_put_32 (output_bfd,
6851 LWZ_12_12 + 4, p + 9*4);
6852 }
6853 }
6854 else
6855 {
6856 for (i = 0; i < ARRAY_SIZE (plt_resolve); i++)
6857 {
6858 bfd_put_32 (output_bfd, plt_resolve[i], p);
6859 p += 4;
6860 }
6861 p -= 4 * ARRAY_SIZE (plt_resolve);
6862
6863 bfd_put_32 (output_bfd,
6864 LIS_12 + PPC_HA (got + 4), p + 0*4);
6865 bfd_put_32 (output_bfd,
6866 ADDIS_11_11 + PPC_HA (-res0), p + 1*4);
6867 bfd_put_32 (output_bfd,
6868 ADDI_11_11 + PPC_LO (-res0), p + 3*4);
6869 if (PPC_HA (got + 4) == PPC_HA (got + 8))
6870 {
6871 bfd_put_32 (output_bfd,
6872 LWZ_0_12 + PPC_LO (got + 4), p + 2*4);
6873 bfd_put_32 (output_bfd,
6874 LWZ_12_12 + PPC_LO (got + 8), p + 6*4);
6875 }
6876 else
6877 {
6878 bfd_put_32 (output_bfd,
6879 LWZU_0_12 + PPC_LO (got + 4), p + 2*4);
6880 bfd_put_32 (output_bfd,
6881 LWZ_12_12 + 4, p + 6*4);
6882 }
6883 }
6884 }
6885
6886 return TRUE;
6887 }
6888 \f
6889 #define TARGET_LITTLE_SYM bfd_elf32_powerpcle_vec
6890 #define TARGET_LITTLE_NAME "elf32-powerpcle"
6891 #define TARGET_BIG_SYM bfd_elf32_powerpc_vec
6892 #define TARGET_BIG_NAME "elf32-powerpc"
6893 #define ELF_ARCH bfd_arch_powerpc
6894 #define ELF_MACHINE_CODE EM_PPC
6895 #ifdef __QNXTARGET__
6896 #define ELF_MAXPAGESIZE 0x1000
6897 #else
6898 #define ELF_MAXPAGESIZE 0x10000
6899 #endif
6900 #define ELF_MINPAGESIZE 0x1000
6901 #define elf_info_to_howto ppc_elf_info_to_howto
6902
6903 #ifdef EM_CYGNUS_POWERPC
6904 #define ELF_MACHINE_ALT1 EM_CYGNUS_POWERPC
6905 #endif
6906
6907 #ifdef EM_PPC_OLD
6908 #define ELF_MACHINE_ALT2 EM_PPC_OLD
6909 #endif
6910
6911 #define elf_backend_plt_not_loaded 1
6912 #define elf_backend_can_gc_sections 1
6913 #define elf_backend_can_refcount 1
6914 #define elf_backend_rela_normal 1
6915
6916 #define bfd_elf32_mkobject ppc_elf_mkobject
6917 #define bfd_elf32_bfd_merge_private_bfd_data ppc_elf_merge_private_bfd_data
6918 #define bfd_elf32_bfd_relax_section ppc_elf_relax_section
6919 #define bfd_elf32_bfd_reloc_type_lookup ppc_elf_reloc_type_lookup
6920 #define bfd_elf32_bfd_set_private_flags ppc_elf_set_private_flags
6921 #define bfd_elf32_bfd_link_hash_table_create ppc_elf_link_hash_table_create
6922
6923 #define elf_backend_object_p ppc_elf_object_p
6924 #define elf_backend_gc_mark_hook ppc_elf_gc_mark_hook
6925 #define elf_backend_gc_sweep_hook ppc_elf_gc_sweep_hook
6926 #define elf_backend_section_from_shdr ppc_elf_section_from_shdr
6927 #define elf_backend_relocate_section ppc_elf_relocate_section
6928 #define elf_backend_create_dynamic_sections ppc_elf_create_dynamic_sections
6929 #define elf_backend_check_relocs ppc_elf_check_relocs
6930 #define elf_backend_copy_indirect_symbol ppc_elf_copy_indirect_symbol
6931 #define elf_backend_adjust_dynamic_symbol ppc_elf_adjust_dynamic_symbol
6932 #define elf_backend_add_symbol_hook ppc_elf_add_symbol_hook
6933 #define elf_backend_size_dynamic_sections ppc_elf_size_dynamic_sections
6934 #define elf_backend_finish_dynamic_symbol ppc_elf_finish_dynamic_symbol
6935 #define elf_backend_finish_dynamic_sections ppc_elf_finish_dynamic_sections
6936 #define elf_backend_fake_sections ppc_elf_fake_sections
6937 #define elf_backend_additional_program_headers ppc_elf_additional_program_headers
6938 #define elf_backend_grok_prstatus ppc_elf_grok_prstatus
6939 #define elf_backend_grok_psinfo ppc_elf_grok_psinfo
6940 #define elf_backend_reloc_type_class ppc_elf_reloc_type_class
6941 #define elf_backend_begin_write_processing ppc_elf_begin_write_processing
6942 #define elf_backend_final_write_processing ppc_elf_final_write_processing
6943 #define elf_backend_write_section ppc_elf_write_section
6944 #define elf_backend_special_sections ppc_elf_special_sections
6945 #define elf_backend_plt_sym_val ppc_elf_plt_sym_val
6946
6947 #include "elf32-target.h"
GDB Binutils - Deliverables
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