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bfd/
[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 /* When creating a shared object, we must copy these
3164 relocs into the output file. We create a reloc
3165 section in dynobj and make room for the reloc. */
3166 case R_PPC_REL24:
3167 case R_PPC_REL14:
3168 case R_PPC_REL14_BRTAKEN:
3169 case R_PPC_REL14_BRNTAKEN:
3170 case R_PPC_REL32:
3171 if (h == NULL)
3172 break;
3173 if (h == htab->elf.hgot)
3174 {
3175 htab->old_plt = 1;
3176 break;
3177 }
3178 /* fall through */
3179
3180 case R_PPC_ADDR32:
3181 case R_PPC_ADDR24:
3182 case R_PPC_ADDR16:
3183 case R_PPC_ADDR16_LO:
3184 case R_PPC_ADDR16_HI:
3185 case R_PPC_ADDR16_HA:
3186 case R_PPC_ADDR14:
3187 case R_PPC_ADDR14_BRTAKEN:
3188 case R_PPC_ADDR14_BRNTAKEN:
3189 case R_PPC_UADDR32:
3190 case R_PPC_UADDR16:
3191 if (h != NULL && !info->shared)
3192 {
3193 /* We may need a plt entry if the symbol turns out to be
3194 a function defined in a dynamic object. */
3195 if (!update_plt_info (abfd, h, NULL, 0))
3196 return FALSE;
3197
3198 /* We may need a copy reloc too. */
3199 h->non_got_ref = 1;
3200 }
3201
3202 dodyn:
3203 /* If we are creating a shared library, and this is a reloc
3204 against a global symbol, or a non PC relative reloc
3205 against a local symbol, then we need to copy the reloc
3206 into the shared library. However, if we are linking with
3207 -Bsymbolic, we do not need to copy a reloc against a
3208 global symbol which is defined in an object we are
3209 including in the link (i.e., DEF_REGULAR is set). At
3210 this point we have not seen all the input files, so it is
3211 possible that DEF_REGULAR is not set now but will be set
3212 later (it is never cleared). In case of a weak definition,
3213 DEF_REGULAR may be cleared later by a strong definition in
3214 a shared library. We account for that possibility below by
3215 storing information in the dyn_relocs field of the hash
3216 table entry. A similar situation occurs when creating
3217 shared libraries and symbol visibility changes render the
3218 symbol local.
3219
3220 If on the other hand, we are creating an executable, we
3221 may need to keep relocations for symbols satisfied by a
3222 dynamic library if we manage to avoid copy relocs for the
3223 symbol. */
3224 if ((info->shared
3225 && (MUST_BE_DYN_RELOC (r_type)
3226 || (h != NULL
3227 && (! info->symbolic
3228 || h->root.type == bfd_link_hash_defweak
3229 || !h->def_regular))))
3230 || (ELIMINATE_COPY_RELOCS
3231 && !info->shared
3232 && h != NULL
3233 && (h->root.type == bfd_link_hash_defweak
3234 || !h->def_regular)))
3235 {
3236 struct ppc_elf_dyn_relocs *p;
3237 struct ppc_elf_dyn_relocs **head;
3238
3239 #ifdef DEBUG
3240 fprintf (stderr,
3241 "ppc_elf_check_relocs needs to "
3242 "create relocation for %s\n",
3243 (h && h->root.root.string
3244 ? h->root.root.string : "<unknown>"));
3245 #endif
3246 if (sreloc == NULL)
3247 {
3248 const char *name;
3249
3250 name = (bfd_elf_string_from_elf_section
3251 (abfd,
3252 elf_elfheader (abfd)->e_shstrndx,
3253 elf_section_data (sec)->rel_hdr.sh_name));
3254 if (name == NULL)
3255 return FALSE;
3256
3257 BFD_ASSERT (strncmp (name, ".rela", 5) == 0
3258 && strcmp (bfd_get_section_name (abfd, sec),
3259 name + 5) == 0);
3260
3261 if (htab->elf.dynobj == NULL)
3262 htab->elf.dynobj = abfd;
3263 sreloc = bfd_get_section_by_name (htab->elf.dynobj, name);
3264 if (sreloc == NULL)
3265 {
3266 flagword flags;
3267
3268 flags = (SEC_HAS_CONTENTS | SEC_READONLY
3269 | SEC_IN_MEMORY | SEC_LINKER_CREATED
3270 | SEC_ALLOC | SEC_LOAD);
3271 sreloc = bfd_make_section_with_flags (htab->elf.dynobj,
3272 name,
3273 flags);
3274 if (sreloc == NULL
3275 || ! bfd_set_section_alignment (htab->elf.dynobj,
3276 sreloc, 2))
3277 return FALSE;
3278 }
3279 elf_section_data (sec)->sreloc = sreloc;
3280 }
3281
3282 /* If this is a global symbol, we count the number of
3283 relocations we need for this symbol. */
3284 if (h != NULL)
3285 {
3286 head = &ppc_elf_hash_entry (h)->dyn_relocs;
3287 }
3288 else
3289 {
3290 /* Track dynamic relocs needed for local syms too.
3291 We really need local syms available to do this
3292 easily. Oh well. */
3293
3294 asection *s;
3295 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec,
3296 sec, r_symndx);
3297 if (s == NULL)
3298 return FALSE;
3299
3300 head = ((struct ppc_elf_dyn_relocs **)
3301 &elf_section_data (s)->local_dynrel);
3302 }
3303
3304 p = *head;
3305 if (p == NULL || p->sec != sec)
3306 {
3307 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
3308 if (p == NULL)
3309 return FALSE;
3310 p->next = *head;
3311 *head = p;
3312 p->sec = sec;
3313 p->count = 0;
3314 p->pc_count = 0;
3315 }
3316
3317 p->count += 1;
3318 if (!MUST_BE_DYN_RELOC (r_type))
3319 p->pc_count += 1;
3320 }
3321
3322 break;
3323 }
3324 }
3325
3326 return TRUE;
3327 }
3328 \f
3329 /* Merge backend specific data from an object file to the output
3330 object file when linking. */
3331
3332 static bfd_boolean
3333 ppc_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
3334 {
3335 flagword old_flags;
3336 flagword new_flags;
3337 bfd_boolean error;
3338
3339 if (!is_ppc_elf_target (ibfd->xvec)
3340 || !is_ppc_elf_target (obfd->xvec))
3341 return TRUE;
3342
3343 /* Check if we have the same endianess. */
3344 if (! _bfd_generic_verify_endian_match (ibfd, obfd))
3345 return FALSE;
3346
3347 new_flags = elf_elfheader (ibfd)->e_flags;
3348 old_flags = elf_elfheader (obfd)->e_flags;
3349 if (!elf_flags_init (obfd))
3350 {
3351 /* First call, no flags set. */
3352 elf_flags_init (obfd) = TRUE;
3353 elf_elfheader (obfd)->e_flags = new_flags;
3354 }
3355
3356 /* Compatible flags are ok. */
3357 else if (new_flags == old_flags)
3358 ;
3359
3360 /* Incompatible flags. */
3361 else
3362 {
3363 /* Warn about -mrelocatable mismatch. Allow -mrelocatable-lib
3364 to be linked with either. */
3365 error = FALSE;
3366 if ((new_flags & EF_PPC_RELOCATABLE) != 0
3367 && (old_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0)
3368 {
3369 error = TRUE;
3370 (*_bfd_error_handler)
3371 (_("%B: compiled with -mrelocatable and linked with "
3372 "modules compiled normally"), ibfd);
3373 }
3374 else if ((new_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0
3375 && (old_flags & EF_PPC_RELOCATABLE) != 0)
3376 {
3377 error = TRUE;
3378 (*_bfd_error_handler)
3379 (_("%B: compiled normally and linked with "
3380 "modules compiled with -mrelocatable"), ibfd);
3381 }
3382
3383 /* The output is -mrelocatable-lib iff both the input files are. */
3384 if (! (new_flags & EF_PPC_RELOCATABLE_LIB))
3385 elf_elfheader (obfd)->e_flags &= ~EF_PPC_RELOCATABLE_LIB;
3386
3387 /* The output is -mrelocatable iff it can't be -mrelocatable-lib,
3388 but each input file is either -mrelocatable or -mrelocatable-lib. */
3389 if (! (elf_elfheader (obfd)->e_flags & EF_PPC_RELOCATABLE_LIB)
3390 && (new_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE))
3391 && (old_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE)))
3392 elf_elfheader (obfd)->e_flags |= EF_PPC_RELOCATABLE;
3393
3394 /* Do not warn about eabi vs. V.4 mismatch, just or in the bit if
3395 any module uses it. */
3396 elf_elfheader (obfd)->e_flags |= (new_flags & EF_PPC_EMB);
3397
3398 new_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
3399 old_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
3400
3401 /* Warn about any other mismatches. */
3402 if (new_flags != old_flags)
3403 {
3404 error = TRUE;
3405 (*_bfd_error_handler)
3406 (_("%B: uses different e_flags (0x%lx) fields "
3407 "than previous modules (0x%lx)"),
3408 ibfd, (long) new_flags, (long) old_flags);
3409 }
3410
3411 if (error)
3412 {
3413 bfd_set_error (bfd_error_bad_value);
3414 return FALSE;
3415 }
3416 }
3417
3418 return TRUE;
3419 }
3420 \f
3421 /* Choose which PLT scheme to use, and set .plt flags appropriately.
3422 Returns -1 on error, 0 for old PLT, 1 for new PLT. */
3423 int
3424 ppc_elf_select_plt_layout (bfd *output_bfd ATTRIBUTE_UNUSED,
3425 struct bfd_link_info *info,
3426 int force_old_plt)
3427 {
3428 struct ppc_elf_link_hash_table *htab;
3429
3430 htab = ppc_elf_hash_table (info);
3431 if (force_old_plt || !htab->new_plt)
3432 htab->old_plt = 1;
3433
3434 if (!htab->old_plt)
3435 {
3436 flagword flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
3437 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3438
3439 /* The new PLT is a loaded section. */
3440 if (htab->plt != NULL
3441 && !bfd_set_section_flags (htab->elf.dynobj, htab->plt, flags))
3442 return -1;
3443
3444 /* The new GOT is not executable. */
3445 if (htab->got != NULL
3446 && !bfd_set_section_flags (htab->elf.dynobj, htab->got, flags))
3447 return -1;
3448 }
3449 else
3450 {
3451 /* Stop an unused .glink section from affecting .text alignment. */
3452 if (htab->glink != NULL
3453 && !bfd_set_section_alignment (htab->elf.dynobj, htab->glink, 0))
3454 return -1;
3455 }
3456 return !htab->old_plt;
3457 }
3458 \f
3459 /* Return the section that should be marked against GC for a given
3460 relocation. */
3461
3462 static asection *
3463 ppc_elf_gc_mark_hook (asection *sec,
3464 struct bfd_link_info *info ATTRIBUTE_UNUSED,
3465 Elf_Internal_Rela *rel,
3466 struct elf_link_hash_entry *h,
3467 Elf_Internal_Sym *sym)
3468 {
3469 if (h != NULL)
3470 {
3471 switch (ELF32_R_TYPE (rel->r_info))
3472 {
3473 case R_PPC_GNU_VTINHERIT:
3474 case R_PPC_GNU_VTENTRY:
3475 break;
3476
3477 default:
3478 switch (h->root.type)
3479 {
3480 case bfd_link_hash_defined:
3481 case bfd_link_hash_defweak:
3482 return h->root.u.def.section;
3483
3484 case bfd_link_hash_common:
3485 return h->root.u.c.p->section;
3486
3487 default:
3488 break;
3489 }
3490 }
3491 }
3492 else
3493 return bfd_section_from_elf_index (sec->owner, sym->st_shndx);
3494
3495 return NULL;
3496 }
3497
3498 /* Update the got, plt and dynamic reloc reference counts for the
3499 section being removed. */
3500
3501 static bfd_boolean
3502 ppc_elf_gc_sweep_hook (bfd *abfd,
3503 struct bfd_link_info *info,
3504 asection *sec,
3505 const Elf_Internal_Rela *relocs)
3506 {
3507 struct ppc_elf_link_hash_table *htab;
3508 Elf_Internal_Shdr *symtab_hdr;
3509 struct elf_link_hash_entry **sym_hashes;
3510 bfd_signed_vma *local_got_refcounts;
3511 const Elf_Internal_Rela *rel, *relend;
3512 asection *got2;
3513
3514 if ((sec->flags & SEC_ALLOC) == 0)
3515 return TRUE;
3516
3517 elf_section_data (sec)->local_dynrel = NULL;
3518
3519 htab = ppc_elf_hash_table (info);
3520 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
3521 sym_hashes = elf_sym_hashes (abfd);
3522 local_got_refcounts = elf_local_got_refcounts (abfd);
3523 got2 = bfd_get_section_by_name (abfd, ".got2");
3524
3525 relend = relocs + sec->reloc_count;
3526 for (rel = relocs; rel < relend; rel++)
3527 {
3528 unsigned long r_symndx;
3529 enum elf_ppc_reloc_type r_type;
3530 struct elf_link_hash_entry *h = NULL;
3531
3532 r_symndx = ELF32_R_SYM (rel->r_info);
3533 if (r_symndx >= symtab_hdr->sh_info)
3534 {
3535 struct ppc_elf_dyn_relocs **pp, *p;
3536 struct ppc_elf_link_hash_entry *eh;
3537
3538 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3539 while (h->root.type == bfd_link_hash_indirect
3540 || h->root.type == bfd_link_hash_warning)
3541 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3542 eh = (struct ppc_elf_link_hash_entry *) h;
3543
3544 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
3545 if (p->sec == sec)
3546 {
3547 /* Everything must go for SEC. */
3548 *pp = p->next;
3549 break;
3550 }
3551 }
3552
3553 r_type = ELF32_R_TYPE (rel->r_info);
3554 switch (r_type)
3555 {
3556 case R_PPC_GOT_TLSLD16:
3557 case R_PPC_GOT_TLSLD16_LO:
3558 case R_PPC_GOT_TLSLD16_HI:
3559 case R_PPC_GOT_TLSLD16_HA:
3560 htab->tlsld_got.refcount -= 1;
3561 /* Fall thru */
3562
3563 case R_PPC_GOT_TLSGD16:
3564 case R_PPC_GOT_TLSGD16_LO:
3565 case R_PPC_GOT_TLSGD16_HI:
3566 case R_PPC_GOT_TLSGD16_HA:
3567 case R_PPC_GOT_TPREL16:
3568 case R_PPC_GOT_TPREL16_LO:
3569 case R_PPC_GOT_TPREL16_HI:
3570 case R_PPC_GOT_TPREL16_HA:
3571 case R_PPC_GOT_DTPREL16:
3572 case R_PPC_GOT_DTPREL16_LO:
3573 case R_PPC_GOT_DTPREL16_HI:
3574 case R_PPC_GOT_DTPREL16_HA:
3575 case R_PPC_GOT16:
3576 case R_PPC_GOT16_LO:
3577 case R_PPC_GOT16_HI:
3578 case R_PPC_GOT16_HA:
3579 if (h != NULL)
3580 {
3581 if (h->got.refcount > 0)
3582 h->got.refcount--;
3583 }
3584 else if (local_got_refcounts != NULL)
3585 {
3586 if (local_got_refcounts[r_symndx] > 0)
3587 local_got_refcounts[r_symndx]--;
3588 }
3589 break;
3590
3591 case R_PPC_REL24:
3592 case R_PPC_REL14:
3593 case R_PPC_REL14_BRTAKEN:
3594 case R_PPC_REL14_BRNTAKEN:
3595 case R_PPC_REL32:
3596 if (h == NULL || h == htab->elf.hgot)
3597 break;
3598 /* Fall thru */
3599
3600 case R_PPC_ADDR32:
3601 case R_PPC_ADDR24:
3602 case R_PPC_ADDR16:
3603 case R_PPC_ADDR16_LO:
3604 case R_PPC_ADDR16_HI:
3605 case R_PPC_ADDR16_HA:
3606 case R_PPC_ADDR14:
3607 case R_PPC_ADDR14_BRTAKEN:
3608 case R_PPC_ADDR14_BRNTAKEN:
3609 case R_PPC_UADDR32:
3610 case R_PPC_UADDR16:
3611 case R_PPC_PLT32:
3612 case R_PPC_PLTREL24:
3613 case R_PPC_PLT16_LO:
3614 case R_PPC_PLT16_HI:
3615 case R_PPC_PLT16_HA:
3616 if (h != NULL)
3617 {
3618 bfd_vma addend = r_type == R_PPC_PLTREL24 ? rel->r_addend : 0;
3619 struct plt_entry *ent = find_plt_ent (h, got2, addend);
3620 if (ent->plt.refcount > 0)
3621 ent->plt.refcount -= 1;
3622 }
3623 break;
3624
3625 default:
3626 break;
3627 }
3628 }
3629 return TRUE;
3630 }
3631 \f
3632 /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */
3633
3634 asection *
3635 ppc_elf_tls_setup (bfd *obfd, struct bfd_link_info *info)
3636 {
3637 struct ppc_elf_link_hash_table *htab;
3638
3639 htab = ppc_elf_hash_table (info);
3640 if (!htab->old_plt
3641 && htab->plt != NULL
3642 && htab->plt->output_section != NULL)
3643 {
3644 elf_section_type (htab->plt->output_section) = SHT_PROGBITS;
3645 elf_section_flags (htab->plt->output_section) = SHF_ALLOC + SHF_WRITE;
3646 }
3647
3648 htab->tls_get_addr = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
3649 FALSE, FALSE, TRUE);
3650 return _bfd_elf_tls_setup (obfd, info);
3651 }
3652
3653 /* Run through all the TLS relocs looking for optimization
3654 opportunities. */
3655
3656 bfd_boolean
3657 ppc_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED,
3658 struct bfd_link_info *info)
3659 {
3660 bfd *ibfd;
3661 asection *sec;
3662 struct ppc_elf_link_hash_table *htab;
3663
3664 if (info->relocatable || info->shared)
3665 return TRUE;
3666
3667 htab = ppc_elf_hash_table (info);
3668 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
3669 {
3670 Elf_Internal_Sym *locsyms = NULL;
3671 Elf_Internal_Shdr *symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
3672
3673 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
3674 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
3675 {
3676 Elf_Internal_Rela *relstart, *rel, *relend;
3677 int expecting_tls_get_addr;
3678
3679 /* Read the relocations. */
3680 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
3681 info->keep_memory);
3682 if (relstart == NULL)
3683 return FALSE;
3684
3685 expecting_tls_get_addr = 0;
3686 relend = relstart + sec->reloc_count;
3687 for (rel = relstart; rel < relend; rel++)
3688 {
3689 enum elf_ppc_reloc_type r_type;
3690 unsigned long r_symndx;
3691 struct elf_link_hash_entry *h = NULL;
3692 char *tls_mask;
3693 char tls_set, tls_clear;
3694 bfd_boolean is_local;
3695
3696 r_symndx = ELF32_R_SYM (rel->r_info);
3697 if (r_symndx >= symtab_hdr->sh_info)
3698 {
3699 struct elf_link_hash_entry **sym_hashes;
3700
3701 sym_hashes = elf_sym_hashes (ibfd);
3702 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3703 while (h->root.type == bfd_link_hash_indirect
3704 || h->root.type == bfd_link_hash_warning)
3705 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3706 }
3707
3708 is_local = FALSE;
3709 if (h == NULL
3710 || !h->def_dynamic)
3711 is_local = TRUE;
3712
3713 r_type = ELF32_R_TYPE (rel->r_info);
3714 switch (r_type)
3715 {
3716 case R_PPC_GOT_TLSLD16:
3717 case R_PPC_GOT_TLSLD16_LO:
3718 case R_PPC_GOT_TLSLD16_HI:
3719 case R_PPC_GOT_TLSLD16_HA:
3720 /* These relocs should never be against a symbol
3721 defined in a shared lib. Leave them alone if
3722 that turns out to be the case. */
3723 expecting_tls_get_addr = 0;
3724 htab->tlsld_got.refcount -= 1;
3725 if (!is_local)
3726 continue;
3727
3728 /* LD -> LE */
3729 tls_set = 0;
3730 tls_clear = TLS_LD;
3731 expecting_tls_get_addr = 1;
3732 break;
3733
3734 case R_PPC_GOT_TLSGD16:
3735 case R_PPC_GOT_TLSGD16_LO:
3736 case R_PPC_GOT_TLSGD16_HI:
3737 case R_PPC_GOT_TLSGD16_HA:
3738 if (is_local)
3739 /* GD -> LE */
3740 tls_set = 0;
3741 else
3742 /* GD -> IE */
3743 tls_set = TLS_TLS | TLS_TPRELGD;
3744 tls_clear = TLS_GD;
3745 expecting_tls_get_addr = 1;
3746 break;
3747
3748 case R_PPC_GOT_TPREL16:
3749 case R_PPC_GOT_TPREL16_LO:
3750 case R_PPC_GOT_TPREL16_HI:
3751 case R_PPC_GOT_TPREL16_HA:
3752 expecting_tls_get_addr = 0;
3753 if (is_local)
3754 {
3755 /* IE -> LE */
3756 tls_set = 0;
3757 tls_clear = TLS_TPREL;
3758 break;
3759 }
3760 else
3761 continue;
3762
3763 case R_PPC_REL14:
3764 case R_PPC_REL14_BRTAKEN:
3765 case R_PPC_REL14_BRNTAKEN:
3766 case R_PPC_REL24:
3767 if (expecting_tls_get_addr
3768 && h != NULL
3769 && h == htab->tls_get_addr)
3770 {
3771 struct plt_entry *ent = find_plt_ent (h, NULL, 0);
3772 if (ent != NULL && ent->plt.refcount > 0)
3773 ent->plt.refcount -= 1;
3774 }
3775 expecting_tls_get_addr = 0;
3776 continue;
3777
3778 default:
3779 expecting_tls_get_addr = 0;
3780 continue;
3781 }
3782
3783 if (h != NULL)
3784 {
3785 if (tls_set == 0)
3786 {
3787 /* We managed to get rid of a got entry. */
3788 if (h->got.refcount > 0)
3789 h->got.refcount -= 1;
3790 }
3791 tls_mask = &ppc_elf_hash_entry (h)->tls_mask;
3792 }
3793 else
3794 {
3795 Elf_Internal_Sym *sym;
3796 bfd_signed_vma *lgot_refs;
3797 char *lgot_masks;
3798
3799 if (locsyms == NULL)
3800 {
3801 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
3802 if (locsyms == NULL)
3803 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
3804 symtab_hdr->sh_info,
3805 0, NULL, NULL, NULL);
3806 if (locsyms == NULL)
3807 {
3808 if (elf_section_data (sec)->relocs != relstart)
3809 free (relstart);
3810 return FALSE;
3811 }
3812 }
3813 sym = locsyms + r_symndx;
3814 lgot_refs = elf_local_got_refcounts (ibfd);
3815 if (lgot_refs == NULL)
3816 abort ();
3817 if (tls_set == 0)
3818 {
3819 /* We managed to get rid of a got entry. */
3820 if (lgot_refs[r_symndx] > 0)
3821 lgot_refs[r_symndx] -= 1;
3822 }
3823 lgot_masks = (char *) (lgot_refs + symtab_hdr->sh_info);
3824 tls_mask = &lgot_masks[r_symndx];
3825 }
3826
3827 *tls_mask |= tls_set;
3828 *tls_mask &= ~tls_clear;
3829 }
3830
3831 if (elf_section_data (sec)->relocs != relstart)
3832 free (relstart);
3833 }
3834
3835 if (locsyms != NULL
3836 && (symtab_hdr->contents != (unsigned char *) locsyms))
3837 {
3838 if (!info->keep_memory)
3839 free (locsyms);
3840 else
3841 symtab_hdr->contents = (unsigned char *) locsyms;
3842 }
3843 }
3844 return TRUE;
3845 }
3846 \f
3847 /* Adjust a symbol defined by a dynamic object and referenced by a
3848 regular object. The current definition is in some section of the
3849 dynamic object, but we're not including those sections. We have to
3850 change the definition to something the rest of the link can
3851 understand. */
3852
3853 static bfd_boolean
3854 ppc_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
3855 struct elf_link_hash_entry *h)
3856 {
3857 struct ppc_elf_link_hash_table *htab;
3858 asection *s;
3859 unsigned int power_of_two;
3860
3861 #ifdef DEBUG
3862 fprintf (stderr, "ppc_elf_adjust_dynamic_symbol called for %s\n",
3863 h->root.root.string);
3864 #endif
3865
3866 /* Make sure we know what is going on here. */
3867 htab = ppc_elf_hash_table (info);
3868 BFD_ASSERT (htab->elf.dynobj != NULL
3869 && (h->needs_plt
3870 || h->u.weakdef != NULL
3871 || (h->def_dynamic
3872 && h->ref_regular
3873 && !h->def_regular)));
3874
3875 /* Deal with function syms. */
3876 if (h->type == STT_FUNC
3877 || h->needs_plt)
3878 {
3879 /* Clear procedure linkage table information for any symbol that
3880 won't need a .plt entry. */
3881 struct plt_entry *ent;
3882 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
3883 if (ent->plt.refcount > 0)
3884 break;
3885 if (ent == NULL
3886 || SYMBOL_CALLS_LOCAL (info, h)
3887 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
3888 && h->root.type == bfd_link_hash_undefweak))
3889 {
3890 /* A PLT entry is not required/allowed when:
3891
3892 1. We are not using ld.so; because then the PLT entry
3893 can't be set up, so we can't use one. In this case,
3894 ppc_elf_adjust_dynamic_symbol won't even be called.
3895
3896 2. GC has rendered the entry unused.
3897
3898 3. We know for certain that a call to this symbol
3899 will go to this object, or will remain undefined. */
3900 h->plt.plist = NULL;
3901 h->needs_plt = 0;
3902 }
3903 return TRUE;
3904 }
3905 else
3906 h->plt.plist = NULL;
3907
3908 /* If this is a weak symbol, and there is a real definition, the
3909 processor independent code will have arranged for us to see the
3910 real definition first, and we can just use the same value. */
3911 if (h->u.weakdef != NULL)
3912 {
3913 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
3914 || h->u.weakdef->root.type == bfd_link_hash_defweak);
3915 h->root.u.def.section = h->u.weakdef->root.u.def.section;
3916 h->root.u.def.value = h->u.weakdef->root.u.def.value;
3917 if (ELIMINATE_COPY_RELOCS)
3918 h->non_got_ref = h->u.weakdef->non_got_ref;
3919 return TRUE;
3920 }
3921
3922 /* This is a reference to a symbol defined by a dynamic object which
3923 is not a function. */
3924
3925 /* If we are creating a shared library, we must presume that the
3926 only references to the symbol are via the global offset table.
3927 For such cases we need not do anything here; the relocations will
3928 be handled correctly by relocate_section. */
3929 if (info->shared)
3930 return TRUE;
3931
3932 /* If there are no references to this symbol that do not use the
3933 GOT, we don't need to generate a copy reloc. */
3934 if (!h->non_got_ref)
3935 return TRUE;
3936
3937 /* If we didn't find any dynamic relocs in read-only sections, then we'll
3938 be keeping the dynamic relocs and avoiding the copy reloc. We can't
3939 do this if there are any small data relocations. */
3940 if (ELIMINATE_COPY_RELOCS
3941 && !ppc_elf_hash_entry (h)->has_sda_refs)
3942 {
3943 struct ppc_elf_dyn_relocs *p;
3944 for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next)
3945 {
3946 s = p->sec->output_section;
3947 if (s != NULL && (s->flags & SEC_READONLY) != 0)
3948 break;
3949 }
3950
3951 if (p == NULL)
3952 {
3953 h->non_got_ref = 0;
3954 return TRUE;
3955 }
3956 }
3957
3958 /* We must allocate the symbol in our .dynbss section, which will
3959 become part of the .bss section of the executable. There will be
3960 an entry for this symbol in the .dynsym section. The dynamic
3961 object will contain position independent code, so all references
3962 from the dynamic object to this symbol will go through the global
3963 offset table. The dynamic linker will use the .dynsym entry to
3964 determine the address it must put in the global offset table, so
3965 both the dynamic object and the regular object will refer to the
3966 same memory location for the variable.
3967
3968 Of course, if the symbol is referenced using SDAREL relocs, we
3969 must instead allocate it in .sbss. */
3970
3971 if (ppc_elf_hash_entry (h)->has_sda_refs)
3972 s = htab->dynsbss;
3973 else
3974 s = htab->dynbss;
3975 BFD_ASSERT (s != NULL);
3976
3977 /* We must generate a R_PPC_COPY reloc to tell the dynamic linker to
3978 copy the initial value out of the dynamic object and into the
3979 runtime process image. We need to remember the offset into the
3980 .rela.bss section we are going to use. */
3981 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
3982 {
3983 asection *srel;
3984
3985 if (ppc_elf_hash_entry (h)->has_sda_refs)
3986 srel = htab->relsbss;
3987 else
3988 srel = htab->relbss;
3989 BFD_ASSERT (srel != NULL);
3990 srel->size += sizeof (Elf32_External_Rela);
3991 h->needs_copy = 1;
3992 }
3993
3994 /* We need to figure out the alignment required for this symbol. I
3995 have no idea how ELF linkers handle this. */
3996 power_of_two = bfd_log2 (h->size);
3997 if (power_of_two > 4)
3998 power_of_two = 4;
3999
4000 /* Apply the required alignment. */
4001 s->size = BFD_ALIGN (s->size, (bfd_size_type) (1 << power_of_two));
4002 if (power_of_two > bfd_get_section_alignment (htab->elf.dynobj, s))
4003 {
4004 if (! bfd_set_section_alignment (htab->elf.dynobj, s, power_of_two))
4005 return FALSE;
4006 }
4007
4008 /* Define the symbol as being at this point in the section. */
4009 h->root.u.def.section = s;
4010 h->root.u.def.value = s->size;
4011
4012 /* Increment the section size to make room for the symbol. */
4013 s->size += h->size;
4014
4015 return TRUE;
4016 }
4017 \f
4018 /* Allocate NEED contiguous space in .got, and return the offset.
4019 Handles allocation of the got header when crossing 32k. */
4020
4021 static bfd_vma
4022 allocate_got (struct ppc_elf_link_hash_table *htab, unsigned int need)
4023 {
4024 bfd_vma where;
4025 unsigned int max_before_header = 32768;
4026
4027 if (htab->old_plt)
4028 max_before_header = 32764;
4029
4030 if (need <= htab->got_gap)
4031 {
4032 where = max_before_header - htab->got_gap;
4033 htab->got_gap -= need;
4034 }
4035 else
4036 {
4037 if (htab->got->size + need > max_before_header
4038 && htab->got->size <= max_before_header)
4039 {
4040 htab->got_gap = max_before_header - htab->got->size;
4041 htab->got->size = max_before_header + htab->got_header_size;
4042 }
4043 where = htab->got->size;
4044 htab->got->size += need;
4045 }
4046 return where;
4047 }
4048
4049 /* Allocate space in associated reloc sections for dynamic relocs. */
4050
4051 static bfd_boolean
4052 allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
4053 {
4054 struct bfd_link_info *info = inf;
4055 struct ppc_elf_link_hash_entry *eh;
4056 struct ppc_elf_link_hash_table *htab;
4057 struct ppc_elf_dyn_relocs *p;
4058
4059 if (h->root.type == bfd_link_hash_indirect)
4060 return TRUE;
4061
4062 if (h->root.type == bfd_link_hash_warning)
4063 /* When warning symbols are created, they **replace** the "real"
4064 entry in the hash table, thus we never get to see the real
4065 symbol in a hash traversal. So look at it now. */
4066 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4067
4068 htab = ppc_elf_hash_table (info);
4069 if (htab->elf.dynamic_sections_created)
4070 {
4071 struct plt_entry *ent;
4072 bfd_boolean doneone = FALSE;
4073 bfd_vma plt_offset = 0, glink_offset = 0;
4074
4075 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
4076 if (ent->plt.refcount > 0)
4077 {
4078 /* Make sure this symbol is output as a dynamic symbol. */
4079 if (h->dynindx == -1
4080 && !h->forced_local)
4081 {
4082 if (! bfd_elf_link_record_dynamic_symbol (info, h))
4083 return FALSE;
4084 }
4085
4086 if (info->shared
4087 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
4088 {
4089 asection *s = htab->plt;
4090
4091 if (!htab->old_plt)
4092 {
4093 if (!doneone)
4094 {
4095 plt_offset = s->size;
4096 s->size += 4;
4097 }
4098 ent->plt.offset = plt_offset;
4099
4100 s = htab->glink;
4101 if (!doneone || info->shared || info->pie)
4102 {
4103 glink_offset = s->size;
4104 s->size += GLINK_ENTRY_SIZE;
4105 }
4106 if (!doneone
4107 && !info->shared
4108 && !h->def_regular)
4109 {
4110 h->root.u.def.section = s;
4111 h->root.u.def.value = glink_offset;
4112 }
4113 ent->glink_offset = glink_offset;
4114 }
4115 else
4116 {
4117 if (!doneone)
4118 {
4119 /* If this is the first .plt entry, make room
4120 for the special first entry. */
4121 if (s->size == 0)
4122 s->size += PLT_INITIAL_ENTRY_SIZE;
4123
4124 /* The PowerPC PLT is actually composed of two
4125 parts, the first part is 2 words (for a load
4126 and a jump), and then there is a remaining
4127 word available at the end. */
4128 plt_offset = (PLT_INITIAL_ENTRY_SIZE
4129 + (PLT_SLOT_SIZE
4130 * ((s->size - PLT_INITIAL_ENTRY_SIZE)
4131 / PLT_ENTRY_SIZE)));
4132
4133 /* If this symbol is not defined in a regular
4134 file, and we are not generating a shared
4135 library, then set the symbol to this location
4136 in the .plt. This is required to make
4137 function pointers compare as equal between
4138 the normal executable and the shared library. */
4139 if (! info->shared
4140 && !h->def_regular)
4141 {
4142 h->root.u.def.section = s;
4143 h->root.u.def.value = plt_offset;
4144 }
4145
4146 /* Make room for this entry. After the 8192nd
4147 entry, room for two entries is allocated. */
4148 s->size += PLT_ENTRY_SIZE;
4149 if ((s->size - PLT_INITIAL_ENTRY_SIZE) / PLT_ENTRY_SIZE
4150 > PLT_NUM_SINGLE_ENTRIES)
4151 s->size += PLT_ENTRY_SIZE;
4152 }
4153 ent->plt.offset = plt_offset;
4154 }
4155
4156 /* We also need to make an entry in the .rela.plt section. */
4157 if (!doneone)
4158 {
4159 htab->relplt->size += sizeof (Elf32_External_Rela);
4160 doneone = TRUE;
4161 }
4162 }
4163 else
4164 ent->plt.offset = (bfd_vma) -1;
4165
4166 if (!doneone)
4167 {
4168 h->plt.plist = NULL;
4169 h->needs_plt = 0;
4170 }
4171 }
4172 }
4173 else
4174 {
4175 h->plt.plist = NULL;
4176 h->needs_plt = 0;
4177 }
4178
4179 eh = (struct ppc_elf_link_hash_entry *) h;
4180 if (eh->elf.got.refcount > 0)
4181 {
4182 /* Make sure this symbol is output as a dynamic symbol. */
4183 if (eh->elf.dynindx == -1
4184 && !eh->elf.forced_local)
4185 {
4186 if (!bfd_elf_link_record_dynamic_symbol (info, &eh->elf))
4187 return FALSE;
4188 }
4189
4190 if (eh->tls_mask == (TLS_TLS | TLS_LD)
4191 && !eh->elf.def_dynamic)
4192 /* If just an LD reloc, we'll just use htab->tlsld_got.offset. */
4193 eh->elf.got.offset = (bfd_vma) -1;
4194 else
4195 {
4196 bfd_boolean dyn;
4197 unsigned int need = 0;
4198 if ((eh->tls_mask & TLS_TLS) != 0)
4199 {
4200 if ((eh->tls_mask & TLS_LD) != 0)
4201 need += 8;
4202 if ((eh->tls_mask & TLS_GD) != 0)
4203 need += 8;
4204 if ((eh->tls_mask & (TLS_TPREL | TLS_TPRELGD)) != 0)
4205 need += 4;
4206 if ((eh->tls_mask & TLS_DTPREL) != 0)
4207 need += 4;
4208 }
4209 else
4210 need += 4;
4211 eh->elf.got.offset = allocate_got (htab, need);
4212 dyn = htab->elf.dynamic_sections_created;
4213 if ((info->shared
4214 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, &eh->elf))
4215 && (ELF_ST_VISIBILITY (eh->elf.other) == STV_DEFAULT
4216 || eh->elf.root.type != bfd_link_hash_undefweak))
4217 {
4218 /* All the entries we allocated need relocs.
4219 Except LD only needs one. */
4220 if ((eh->tls_mask & TLS_LD) != 0)
4221 need -= 4;
4222 htab->relgot->size += need * (sizeof (Elf32_External_Rela) / 4);
4223 }
4224 }
4225 }
4226 else
4227 eh->elf.got.offset = (bfd_vma) -1;
4228
4229 if (eh->dyn_relocs == NULL)
4230 return TRUE;
4231
4232 /* In the shared -Bsymbolic case, discard space allocated for
4233 dynamic pc-relative relocs against symbols which turn out to be
4234 defined in regular objects. For the normal shared case, discard
4235 space for relocs that have become local due to symbol visibility
4236 changes. */
4237
4238 if (info->shared)
4239 {
4240 /* Relocs that use pc_count are those that appear on a call insn,
4241 or certain REL relocs (see MUST_BE_DYN_RELOC) that can be
4242 generated via assembly. We want calls to protected symbols to
4243 resolve directly to the function rather than going via the plt.
4244 If people want function pointer comparisons to work as expected
4245 then they should avoid writing weird assembly. */
4246 if (SYMBOL_CALLS_LOCAL (info, h))
4247 {
4248 struct ppc_elf_dyn_relocs **pp;
4249
4250 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
4251 {
4252 p->count -= p->pc_count;
4253 p->pc_count = 0;
4254 if (p->count == 0)
4255 *pp = p->next;
4256 else
4257 pp = &p->next;
4258 }
4259 }
4260
4261 /* Also discard relocs on undefined weak syms with non-default
4262 visibility. */
4263 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
4264 && h->root.type == bfd_link_hash_undefweak)
4265 eh->dyn_relocs = NULL;
4266
4267 /* Make sure undefined weak symbols are output as a dynamic symbol
4268 in PIEs. */
4269 if (info->pie
4270 && eh->dyn_relocs != NULL
4271 && h->dynindx == -1
4272 && h->root.type == bfd_link_hash_undefweak
4273 && !h->forced_local)
4274 {
4275 if (! bfd_elf_link_record_dynamic_symbol (info, h))
4276 return FALSE;
4277 }
4278 }
4279 else if (ELIMINATE_COPY_RELOCS)
4280 {
4281 /* For the non-shared case, discard space for relocs against
4282 symbols which turn out to need copy relocs or are not
4283 dynamic. */
4284
4285 if (!h->non_got_ref
4286 && h->def_dynamic
4287 && !h->def_regular)
4288 {
4289 /* Make sure this symbol is output as a dynamic symbol.
4290 Undefined weak syms won't yet be marked as dynamic. */
4291 if (h->dynindx == -1
4292 && !h->forced_local)
4293 {
4294 if (! bfd_elf_link_record_dynamic_symbol (info, h))
4295 return FALSE;
4296 }
4297
4298 /* If that succeeded, we know we'll be keeping all the
4299 relocs. */
4300 if (h->dynindx != -1)
4301 goto keep;
4302 }
4303
4304 eh->dyn_relocs = NULL;
4305
4306 keep: ;
4307 }
4308
4309 /* Finally, allocate space. */
4310 for (p = eh->dyn_relocs; p != NULL; p = p->next)
4311 {
4312 asection *sreloc = elf_section_data (p->sec)->sreloc;
4313 sreloc->size += p->count * sizeof (Elf32_External_Rela);
4314 }
4315
4316 return TRUE;
4317 }
4318
4319 /* Find any dynamic relocs that apply to read-only sections. */
4320
4321 static bfd_boolean
4322 readonly_dynrelocs (struct elf_link_hash_entry *h, void *info)
4323 {
4324 struct ppc_elf_dyn_relocs *p;
4325
4326 if (h->root.type == bfd_link_hash_indirect)
4327 return TRUE;
4328
4329 if (h->root.type == bfd_link_hash_warning)
4330 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4331
4332 for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next)
4333 {
4334 asection *s = p->sec->output_section;
4335
4336 if (s != NULL
4337 && ((s->flags & (SEC_READONLY | SEC_ALLOC))
4338 == (SEC_READONLY | SEC_ALLOC)))
4339 {
4340 ((struct bfd_link_info *) info)->flags |= DF_TEXTREL;
4341
4342 /* Not an error, just cut short the traversal. */
4343 return FALSE;
4344 }
4345 }
4346 return TRUE;
4347 }
4348
4349 /* Set the sizes of the dynamic sections. */
4350
4351 static bfd_boolean
4352 ppc_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
4353 struct bfd_link_info *info)
4354 {
4355 struct ppc_elf_link_hash_table *htab;
4356 asection *s;
4357 bfd_boolean relocs;
4358 bfd *ibfd;
4359
4360 #ifdef DEBUG
4361 fprintf (stderr, "ppc_elf_size_dynamic_sections called\n");
4362 #endif
4363
4364 htab = ppc_elf_hash_table (info);
4365 BFD_ASSERT (htab->elf.dynobj != NULL);
4366
4367 if (elf_hash_table (info)->dynamic_sections_created)
4368 {
4369 /* Set the contents of the .interp section to the interpreter. */
4370 if (info->executable)
4371 {
4372 s = bfd_get_section_by_name (htab->elf.dynobj, ".interp");
4373 BFD_ASSERT (s != NULL);
4374 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
4375 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
4376 }
4377 }
4378
4379 if (htab->old_plt)
4380 htab->got_header_size = 16;
4381 else
4382 htab->got_header_size = 12;
4383
4384 /* Set up .got offsets for local syms, and space for local dynamic
4385 relocs. */
4386 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
4387 {
4388 bfd_signed_vma *local_got;
4389 bfd_signed_vma *end_local_got;
4390 char *lgot_masks;
4391 bfd_size_type locsymcount;
4392 Elf_Internal_Shdr *symtab_hdr;
4393
4394 if (!is_ppc_elf_target (ibfd->xvec))
4395 continue;
4396
4397 for (s = ibfd->sections; s != NULL; s = s->next)
4398 {
4399 struct ppc_elf_dyn_relocs *p;
4400
4401 for (p = ((struct ppc_elf_dyn_relocs *)
4402 elf_section_data (s)->local_dynrel);
4403 p != NULL;
4404 p = p->next)
4405 {
4406 if (!bfd_is_abs_section (p->sec)
4407 && bfd_is_abs_section (p->sec->output_section))
4408 {
4409 /* Input section has been discarded, either because
4410 it is a copy of a linkonce section or due to
4411 linker script /DISCARD/, so we'll be discarding
4412 the relocs too. */
4413 }
4414 else if (p->count != 0)
4415 {
4416 elf_section_data (p->sec)->sreloc->size
4417 += p->count * sizeof (Elf32_External_Rela);
4418 if ((p->sec->output_section->flags
4419 & (SEC_READONLY | SEC_ALLOC))
4420 == (SEC_READONLY | SEC_ALLOC))
4421 info->flags |= DF_TEXTREL;
4422 }
4423 }
4424 }
4425
4426 local_got = elf_local_got_refcounts (ibfd);
4427 if (!local_got)
4428 continue;
4429
4430 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
4431 locsymcount = symtab_hdr->sh_info;
4432 end_local_got = local_got + locsymcount;
4433 lgot_masks = (char *) end_local_got;
4434 for (; local_got < end_local_got; ++local_got, ++lgot_masks)
4435 if (*local_got > 0)
4436 {
4437 if (*lgot_masks == (TLS_TLS | TLS_LD))
4438 {
4439 /* If just an LD reloc, we'll just use
4440 htab->tlsld_got.offset. */
4441 htab->tlsld_got.refcount += 1;
4442 *local_got = (bfd_vma) -1;
4443 }
4444 else
4445 {
4446 unsigned int need = 0;
4447 if ((*lgot_masks & TLS_TLS) != 0)
4448 {
4449 if ((*lgot_masks & TLS_GD) != 0)
4450 need += 8;
4451 if ((*lgot_masks & (TLS_TPREL | TLS_TPRELGD)) != 0)
4452 need += 4;
4453 if ((*lgot_masks & TLS_DTPREL) != 0)
4454 need += 4;
4455 }
4456 else
4457 need += 4;
4458 *local_got = allocate_got (htab, need);
4459 if (info->shared)
4460 htab->relgot->size += (need
4461 * (sizeof (Elf32_External_Rela) / 4));
4462 }
4463 }
4464 else
4465 *local_got = (bfd_vma) -1;
4466 }
4467
4468 if (htab->tlsld_got.refcount > 0)
4469 {
4470 htab->tlsld_got.offset = allocate_got (htab, 8);
4471 if (info->shared)
4472 htab->relgot->size += sizeof (Elf32_External_Rela);
4473 }
4474 else
4475 htab->tlsld_got.offset = (bfd_vma) -1;
4476
4477 /* Allocate space for global sym dynamic relocs. */
4478 elf_link_hash_traverse (elf_hash_table (info), allocate_dynrelocs, info);
4479
4480 if (htab->got != NULL)
4481 {
4482 unsigned int g_o_t = 32768;
4483
4484 /* If we haven't allocated the header, do so now. */
4485 if (htab->got->size <= 32768)
4486 {
4487 g_o_t = htab->got->size;
4488 htab->got->size += htab->got_header_size;
4489 }
4490 if (htab->old_plt)
4491 g_o_t += 4;
4492
4493 htab->elf.hgot->root.u.def.value = g_o_t;
4494 }
4495
4496 if (htab->glink != NULL && htab->glink->size != 0)
4497 {
4498 htab->glink_pltresolve = htab->glink->size;
4499 /* Space for the branch table. */
4500 htab->glink->size += htab->glink->size / (GLINK_ENTRY_SIZE / 4) - 4;
4501 /* Pad out to align the start of PLTresolve. */
4502 htab->glink->size += -htab->glink->size & 15;
4503 htab->glink->size += GLINK_PLTRESOLVE;
4504 }
4505
4506 /* We've now determined the sizes of the various dynamic sections.
4507 Allocate memory for them. */
4508 relocs = FALSE;
4509 for (s = htab->elf.dynobj->sections; s != NULL; s = s->next)
4510 {
4511 if ((s->flags & SEC_LINKER_CREATED) == 0)
4512 continue;
4513
4514 if (s == htab->plt
4515 || s == htab->glink
4516 || s == htab->got
4517 || s == htab->sbss)
4518 {
4519 /* Strip this section if we don't need it; see the
4520 comment below. */
4521 }
4522 else if (s == htab->sdata[0].section
4523 || s == htab->sdata[1].section)
4524 {
4525 /* Strip these too. */
4526 }
4527 else if (strncmp (bfd_get_section_name (dynobj, s), ".rela", 5) == 0)
4528 {
4529 if (s->size == 0)
4530 {
4531 /* If we don't need this section, strip it from the
4532 output file. This is mostly to handle .rela.bss and
4533 .rela.plt. We must create both sections in
4534 create_dynamic_sections, because they must be created
4535 before the linker maps input sections to output
4536 sections. The linker does that before
4537 adjust_dynamic_symbol is called, and it is that
4538 function which decides whether anything needs to go
4539 into these sections. */
4540 }
4541 else
4542 {
4543 /* Remember whether there are any relocation sections. */
4544 relocs = TRUE;
4545
4546 /* We use the reloc_count field as a counter if we need
4547 to copy relocs into the output file. */
4548 s->reloc_count = 0;
4549 }
4550 }
4551 else
4552 {
4553 /* It's not one of our sections, so don't allocate space. */
4554 continue;
4555 }
4556
4557 if (s->size == 0)
4558 {
4559 s->flags |= SEC_EXCLUDE;
4560 continue;
4561 }
4562
4563 if ((s->flags & SEC_HAS_CONTENTS) == 0)
4564 continue;
4565
4566 /* Allocate memory for the section contents. */
4567 s->contents = bfd_zalloc (htab->elf.dynobj, s->size);
4568 if (s->contents == NULL)
4569 return FALSE;
4570 }
4571
4572 if (htab->elf.dynamic_sections_created)
4573 {
4574 /* Add some entries to the .dynamic section. We fill in the
4575 values later, in ppc_elf_finish_dynamic_sections, but we
4576 must add the entries now so that we get the correct size for
4577 the .dynamic section. The DT_DEBUG entry is filled in by the
4578 dynamic linker and used by the debugger. */
4579 #define add_dynamic_entry(TAG, VAL) \
4580 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
4581
4582 if (info->executable)
4583 {
4584 if (!add_dynamic_entry (DT_DEBUG, 0))
4585 return FALSE;
4586 }
4587
4588 if (htab->plt != NULL && htab->plt->size != 0)
4589 {
4590 if (!add_dynamic_entry (DT_PLTGOT, 0)
4591 || !add_dynamic_entry (DT_PLTRELSZ, 0)
4592 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
4593 || !add_dynamic_entry (DT_JMPREL, 0))
4594 return FALSE;
4595 }
4596
4597 if (htab->glink != NULL && htab->glink->size != 0)
4598 {
4599 if (!add_dynamic_entry (DT_PPC_GOT, 0))
4600 return FALSE;
4601 }
4602
4603 if (relocs)
4604 {
4605 if (!add_dynamic_entry (DT_RELA, 0)
4606 || !add_dynamic_entry (DT_RELASZ, 0)
4607 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
4608 return FALSE;
4609 }
4610
4611 /* If any dynamic relocs apply to a read-only section, then we
4612 need a DT_TEXTREL entry. */
4613 if ((info->flags & DF_TEXTREL) == 0)
4614 elf_link_hash_traverse (elf_hash_table (info), readonly_dynrelocs,
4615 info);
4616
4617 if ((info->flags & DF_TEXTREL) != 0)
4618 {
4619 if (!add_dynamic_entry (DT_TEXTREL, 0))
4620 return FALSE;
4621 }
4622 }
4623 #undef add_dynamic_entry
4624
4625 return TRUE;
4626 }
4627 \f
4628 #define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0]))
4629
4630 static const int shared_stub_entry[] =
4631 {
4632 0x7c0802a6, /* mflr 0 */
4633 0x429f0005, /* bcl 20, 31, .Lxxx */
4634 0x7d6802a6, /* mflr 11 */
4635 0x3d6b0000, /* addis 11, 11, (xxx-.Lxxx)@ha */
4636 0x396b0018, /* addi 11, 11, (xxx-.Lxxx)@l */
4637 0x7c0803a6, /* mtlr 0 */
4638 0x7d6903a6, /* mtctr 11 */
4639 0x4e800420, /* bctr */
4640 };
4641
4642 static const int stub_entry[] =
4643 {
4644 0x3d600000, /* lis 11,xxx@ha */
4645 0x396b0000, /* addi 11,11,xxx@l */
4646 0x7d6903a6, /* mtctr 11 */
4647 0x4e800420, /* bctr */
4648 };
4649
4650 static bfd_boolean
4651 ppc_elf_relax_section (bfd *abfd,
4652 asection *isec,
4653 struct bfd_link_info *link_info,
4654 bfd_boolean *again)
4655 {
4656 struct one_fixup
4657 {
4658 struct one_fixup *next;
4659 asection *tsec;
4660 bfd_vma toff;
4661 bfd_vma trampoff;
4662 };
4663
4664 Elf_Internal_Shdr *symtab_hdr;
4665 bfd_byte *contents = NULL;
4666 Elf_Internal_Sym *isymbuf = NULL;
4667 Elf_Internal_Rela *internal_relocs = NULL;
4668 Elf_Internal_Rela *irel, *irelend;
4669 struct one_fixup *fixups = NULL;
4670 bfd_boolean changed;
4671 struct ppc_elf_link_hash_table *htab;
4672 bfd_size_type trampoff;
4673 asection *got2;
4674
4675 *again = FALSE;
4676
4677 /* Nothing to do if there are no relocations, and no need to do
4678 anything with non-alloc sections. */
4679 if ((isec->flags & SEC_ALLOC) == 0
4680 || (isec->flags & SEC_RELOC) == 0
4681 || isec->reloc_count == 0)
4682 return TRUE;
4683
4684 trampoff = (isec->size + 3) & (bfd_vma) -4;
4685 /* Space for a branch around any trampolines. */
4686 trampoff += 4;
4687
4688 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
4689
4690 /* Get a copy of the native relocations. */
4691 internal_relocs = _bfd_elf_link_read_relocs (abfd, isec, NULL, NULL,
4692 link_info->keep_memory);
4693 if (internal_relocs == NULL)
4694 goto error_return;
4695
4696 htab = ppc_elf_hash_table (link_info);
4697 got2 = bfd_get_section_by_name (abfd, ".got2");
4698
4699 irelend = internal_relocs + isec->reloc_count;
4700 for (irel = internal_relocs; irel < irelend; irel++)
4701 {
4702 unsigned long r_type = ELF32_R_TYPE (irel->r_info);
4703 bfd_vma symaddr, reladdr, toff, roff;
4704 asection *tsec;
4705 struct one_fixup *f;
4706 size_t insn_offset = 0;
4707 bfd_vma max_branch_offset, val;
4708 bfd_byte *hit_addr;
4709 unsigned long t0;
4710 unsigned char sym_type;
4711
4712 switch (r_type)
4713 {
4714 case R_PPC_REL24:
4715 case R_PPC_LOCAL24PC:
4716 case R_PPC_PLTREL24:
4717 max_branch_offset = 1 << 25;
4718 break;
4719
4720 case R_PPC_REL14:
4721 case R_PPC_REL14_BRTAKEN:
4722 case R_PPC_REL14_BRNTAKEN:
4723 max_branch_offset = 1 << 15;
4724 break;
4725
4726 default:
4727 continue;
4728 }
4729
4730 /* Get the value of the symbol referred to by the reloc. */
4731 if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
4732 {
4733 /* A local symbol. */
4734 Elf_Internal_Sym *isym;
4735
4736 /* Read this BFD's local symbols. */
4737 if (isymbuf == NULL)
4738 {
4739 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
4740 if (isymbuf == NULL)
4741 isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
4742 symtab_hdr->sh_info, 0,
4743 NULL, NULL, NULL);
4744 if (isymbuf == 0)
4745 goto error_return;
4746 }
4747 isym = isymbuf + ELF32_R_SYM (irel->r_info);
4748 if (isym->st_shndx == SHN_UNDEF)
4749 continue; /* We can't do anything with undefined symbols. */
4750 else if (isym->st_shndx == SHN_ABS)
4751 tsec = bfd_abs_section_ptr;
4752 else if (isym->st_shndx == SHN_COMMON)
4753 tsec = bfd_com_section_ptr;
4754 else
4755 tsec = bfd_section_from_elf_index (abfd, isym->st_shndx);
4756
4757 toff = isym->st_value;
4758 sym_type = ELF_ST_TYPE (isym->st_info);
4759 }
4760 else
4761 {
4762 /* Global symbol handling. */
4763 unsigned long indx;
4764 struct elf_link_hash_entry *h;
4765
4766 indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
4767 h = elf_sym_hashes (abfd)[indx];
4768
4769 while (h->root.type == bfd_link_hash_indirect
4770 || h->root.type == bfd_link_hash_warning)
4771 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4772
4773 tsec = NULL;
4774 toff = 0;
4775 if (r_type == R_PPC_PLTREL24
4776 && htab->plt != NULL)
4777 {
4778 struct plt_entry *ent = find_plt_ent (h, got2, irel->r_addend);
4779
4780 if (ent != NULL)
4781 {
4782 if (!htab->old_plt)
4783 {
4784 tsec = htab->glink;
4785 toff = ent->glink_offset;
4786 }
4787 else
4788 {
4789 tsec = htab->plt;
4790 toff = ent->plt.offset;
4791 }
4792 }
4793 }
4794 if (tsec != NULL)
4795 ;
4796 else if (h->root.type == bfd_link_hash_defined
4797 || h->root.type == bfd_link_hash_defweak)
4798 {
4799 tsec = h->root.u.def.section;
4800 toff = h->root.u.def.value;
4801 }
4802 else
4803 continue;
4804
4805 sym_type = h->type;
4806 }
4807
4808 /* If the branch and target are in the same section, you have
4809 no hope of adding stubs. We'll error out later should the
4810 branch overflow. */
4811 if (tsec == isec)
4812 continue;
4813
4814 /* There probably isn't any reason to handle symbols in
4815 SEC_MERGE sections; SEC_MERGE doesn't seem a likely
4816 attribute for a code section, and we are only looking at
4817 branches. However, implement it correctly here as a
4818 reference for other target relax_section functions. */
4819 if (0 && tsec->sec_info_type == ELF_INFO_TYPE_MERGE)
4820 {
4821 /* At this stage in linking, no SEC_MERGE symbol has been
4822 adjusted, so all references to such symbols need to be
4823 passed through _bfd_merged_section_offset. (Later, in
4824 relocate_section, all SEC_MERGE symbols *except* for
4825 section symbols have been adjusted.)
4826
4827 gas may reduce relocations against symbols in SEC_MERGE
4828 sections to a relocation against the section symbol when
4829 the original addend was zero. When the reloc is against
4830 a section symbol we should include the addend in the
4831 offset passed to _bfd_merged_section_offset, since the
4832 location of interest is the original symbol. On the
4833 other hand, an access to "sym+addend" where "sym" is not
4834 a section symbol should not include the addend; Such an
4835 access is presumed to be an offset from "sym"; The
4836 location of interest is just "sym". */
4837 if (sym_type == STT_SECTION)
4838 toff += irel->r_addend;
4839
4840 toff = _bfd_merged_section_offset (abfd, &tsec,
4841 elf_section_data (tsec)->sec_info,
4842 toff);
4843
4844 if (sym_type != STT_SECTION)
4845 toff += irel->r_addend;
4846 }
4847 /* PLTREL24 addends are special. */
4848 else if (r_type != R_PPC_PLTREL24)
4849 toff += irel->r_addend;
4850
4851 symaddr = tsec->output_section->vma + tsec->output_offset + toff;
4852
4853 roff = irel->r_offset;
4854 reladdr = isec->output_section->vma + isec->output_offset + roff;
4855
4856 /* If the branch is in range, no need to do anything. */
4857 if (symaddr - reladdr + max_branch_offset < 2 * max_branch_offset)
4858 continue;
4859
4860 /* Look for an existing fixup to this address. */
4861 for (f = fixups; f ; f = f->next)
4862 if (f->tsec == tsec && f->toff == toff)
4863 break;
4864
4865 if (f == NULL)
4866 {
4867 size_t size;
4868 unsigned long stub_rtype;
4869
4870 val = trampoff - roff;
4871 if (val >= max_branch_offset)
4872 /* Oh dear, we can't reach a trampoline. Don't try to add
4873 one. We'll report an error later. */
4874 continue;
4875
4876 if (link_info->shared)
4877 {
4878 size = 4 * ARRAY_SIZE (shared_stub_entry);
4879 insn_offset = 12;
4880 stub_rtype = R_PPC_RELAX32PC;
4881 }
4882 else
4883 {
4884 size = 4 * ARRAY_SIZE (stub_entry);
4885 insn_offset = 0;
4886 stub_rtype = R_PPC_RELAX32;
4887 }
4888
4889 if (R_PPC_RELAX32_PLT - R_PPC_RELAX32
4890 != R_PPC_RELAX32PC_PLT - R_PPC_RELAX32PC)
4891 abort ();
4892 if (tsec == htab->plt
4893 || tsec == htab->glink)
4894 stub_rtype += R_PPC_RELAX32_PLT - R_PPC_RELAX32;
4895
4896 /* Hijack the old relocation. Since we need two
4897 relocations for this use a "composite" reloc. */
4898 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
4899 stub_rtype);
4900 irel->r_offset = trampoff + insn_offset;
4901
4902 /* Record the fixup so we don't do it again this section. */
4903 f = bfd_malloc (sizeof (*f));
4904 f->next = fixups;
4905 f->tsec = tsec;
4906 f->toff = toff;
4907 f->trampoff = trampoff;
4908 fixups = f;
4909
4910 trampoff += size;
4911 }
4912 else
4913 {
4914 val = f->trampoff - roff;
4915 if (val >= max_branch_offset)
4916 continue;
4917
4918 /* Nop out the reloc, since we're finalizing things here. */
4919 irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
4920 }
4921
4922 /* Get the section contents. */
4923 if (contents == NULL)
4924 {
4925 /* Get cached copy if it exists. */
4926 if (elf_section_data (isec)->this_hdr.contents != NULL)
4927 contents = elf_section_data (isec)->this_hdr.contents;
4928 else
4929 {
4930 /* Go get them off disk. */
4931 if (!bfd_malloc_and_get_section (abfd, isec, &contents))
4932 goto error_return;
4933 }
4934 }
4935
4936 /* Fix up the existing branch to hit the trampoline. */
4937 hit_addr = contents + roff;
4938 switch (r_type)
4939 {
4940 case R_PPC_REL24:
4941 case R_PPC_LOCAL24PC:
4942 case R_PPC_PLTREL24:
4943 t0 = bfd_get_32 (abfd, hit_addr);
4944 t0 &= ~0x3fffffc;
4945 t0 |= val & 0x3fffffc;
4946 bfd_put_32 (abfd, t0, hit_addr);
4947 break;
4948
4949 case R_PPC_REL14:
4950 case R_PPC_REL14_BRTAKEN:
4951 case R_PPC_REL14_BRNTAKEN:
4952 t0 = bfd_get_32 (abfd, hit_addr);
4953 t0 &= ~0xfffc;
4954 t0 |= val & 0xfffc;
4955 bfd_put_32 (abfd, t0, hit_addr);
4956 break;
4957 }
4958 }
4959
4960 /* Write out the trampolines. */
4961 changed = fixups != NULL;
4962 if (fixups != NULL)
4963 {
4964 const int *stub;
4965 bfd_byte *dest;
4966 bfd_vma val;
4967 int i, size;
4968
4969 do
4970 {
4971 struct one_fixup *f = fixups;
4972 fixups = fixups->next;
4973 free (f);
4974 }
4975 while (fixups);
4976
4977 contents = bfd_realloc (contents, trampoff);
4978 if (contents == NULL)
4979 goto error_return;
4980
4981 isec->size = (isec->size + 3) & (bfd_vma) -4;
4982 /* Branch around the trampolines. */
4983 val = trampoff - isec->size + 0x48000000;
4984 dest = contents + isec->size;
4985 isec->size = trampoff;
4986 bfd_put_32 (abfd, val, dest);
4987 dest += 4;
4988
4989 if (link_info->shared)
4990 {
4991 stub = shared_stub_entry;
4992 size = ARRAY_SIZE (shared_stub_entry);
4993 }
4994 else
4995 {
4996 stub = stub_entry;
4997 size = ARRAY_SIZE (stub_entry);
4998 }
4999
5000 i = 0;
5001 while (dest < contents + trampoff)
5002 {
5003 bfd_put_32 (abfd, stub[i], dest);
5004 i++;
5005 if (i == size)
5006 i = 0;
5007 dest += 4;
5008 }
5009 BFD_ASSERT (i == 0);
5010 }
5011
5012 if (isymbuf != NULL
5013 && symtab_hdr->contents != (unsigned char *) isymbuf)
5014 {
5015 if (! link_info->keep_memory)
5016 free (isymbuf);
5017 else
5018 {
5019 /* Cache the symbols for elf_link_input_bfd. */
5020 symtab_hdr->contents = (unsigned char *) isymbuf;
5021 }
5022 }
5023
5024 if (contents != NULL
5025 && elf_section_data (isec)->this_hdr.contents != contents)
5026 {
5027 if (!changed && !link_info->keep_memory)
5028 free (contents);
5029 else
5030 {
5031 /* Cache the section contents for elf_link_input_bfd. */
5032 elf_section_data (isec)->this_hdr.contents = contents;
5033 }
5034 }
5035
5036 if (elf_section_data (isec)->relocs != internal_relocs)
5037 {
5038 if (!changed)
5039 free (internal_relocs);
5040 else
5041 elf_section_data (isec)->relocs = internal_relocs;
5042 }
5043
5044 *again = changed;
5045 return TRUE;
5046
5047 error_return:
5048 if (isymbuf != NULL && (unsigned char *) isymbuf != symtab_hdr->contents)
5049 free (isymbuf);
5050 if (contents != NULL
5051 && elf_section_data (isec)->this_hdr.contents != contents)
5052 free (contents);
5053 if (internal_relocs != NULL
5054 && elf_section_data (isec)->relocs != internal_relocs)
5055 free (internal_relocs);
5056 return FALSE;
5057 }
5058 \f
5059 /* Set _SDA_BASE_, _SDA2_BASE, and sbss start and end syms. They are
5060 set here rather than via PROVIDE in the default linker script,
5061 because using PROVIDE inside an output section statement results in
5062 unnecessary output sections. Using PROVIDE outside an output section
5063 statement runs the risk of section alignment affecting where the
5064 section starts. */
5065
5066 bfd_boolean
5067 ppc_elf_set_sdata_syms (bfd *obfd, struct bfd_link_info *info)
5068 {
5069 struct ppc_elf_link_hash_table *htab;
5070 unsigned i;
5071 asection *s;
5072 bfd_vma val;
5073
5074 htab = ppc_elf_hash_table (info);
5075
5076 for (i = 0; i < 2; i++)
5077 {
5078 elf_linker_section_t *lsect = &htab->sdata[i];
5079
5080 s = lsect->section;
5081 if (s != NULL)
5082 s = s->output_section;
5083 if (s == NULL)
5084 s = bfd_get_section_by_name (obfd, lsect->name);
5085 if (s == NULL)
5086 s = bfd_get_section_by_name (obfd, lsect->bss_name);
5087
5088 val = 0;
5089 if (s != NULL)
5090 val = s->vma + 32768;
5091 lsect->sym_val = val;
5092
5093 _bfd_elf_provide_symbol (info, lsect->sym_name, val);
5094 }
5095
5096 s = bfd_get_section_by_name (obfd, ".sbss");
5097 val = 0;
5098 if (s != NULL)
5099 val = s->vma;
5100 _bfd_elf_provide_symbol (info, "__sbss_start", val);
5101 _bfd_elf_provide_symbol (info, "___sbss_start", val);
5102 if (s != NULL)
5103 val += s->size;
5104 _bfd_elf_provide_symbol (info, "__sbss_end", val);
5105 _bfd_elf_provide_symbol (info, "___sbss_end", val);
5106 return TRUE;
5107 }
5108 \f
5109 /* Fill in the address for a pointer generated in a linker section. */
5110
5111 static bfd_vma
5112 elf_finish_pointer_linker_section (bfd *input_bfd,
5113 elf_linker_section_t *lsect,
5114 struct elf_link_hash_entry *h,
5115 bfd_vma relocation,
5116 const Elf_Internal_Rela *rel)
5117 {
5118 elf_linker_section_pointers_t *linker_section_ptr;
5119
5120 BFD_ASSERT (lsect != NULL);
5121
5122 if (h != NULL)
5123 {
5124 /* Handle global symbol. */
5125 struct ppc_elf_link_hash_entry *eh;
5126
5127 eh = (struct ppc_elf_link_hash_entry *) h;
5128 BFD_ASSERT (eh->elf.def_regular);
5129 linker_section_ptr = eh->linker_section_pointer;
5130 }
5131 else
5132 {
5133 /* Handle local symbol. */
5134 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
5135
5136 BFD_ASSERT (elf_local_ptr_offsets (input_bfd) != NULL);
5137 linker_section_ptr = elf_local_ptr_offsets (input_bfd)[r_symndx];
5138 }
5139
5140 linker_section_ptr = elf_find_pointer_linker_section (linker_section_ptr,
5141 rel->r_addend,
5142 lsect);
5143 BFD_ASSERT (linker_section_ptr != NULL);
5144
5145 /* Offset will always be a multiple of four, so use the bottom bit
5146 as a "written" flag. */
5147 if ((linker_section_ptr->offset & 1) == 0)
5148 {
5149 bfd_put_32 (lsect->section->owner,
5150 relocation + linker_section_ptr->addend,
5151 lsect->section->contents + linker_section_ptr->offset);
5152 linker_section_ptr->offset += 1;
5153 }
5154
5155 relocation = (lsect->section->output_offset
5156 + linker_section_ptr->offset - 1
5157 - 0x8000);
5158
5159 #ifdef DEBUG
5160 fprintf (stderr,
5161 "Finish pointer in linker section %s, offset = %ld (0x%lx)\n",
5162 lsect->name, (long) relocation, (long) relocation);
5163 #endif
5164
5165 /* Subtract out the addend, because it will get added back in by the normal
5166 processing. */
5167 return relocation - linker_section_ptr->addend;
5168 }
5169
5170 /* The RELOCATE_SECTION function is called by the ELF backend linker
5171 to handle the relocations for a section.
5172
5173 The relocs are always passed as Rela structures; if the section
5174 actually uses Rel structures, the r_addend field will always be
5175 zero.
5176
5177 This function is responsible for adjust the section contents as
5178 necessary, and (if using Rela relocs and generating a
5179 relocatable output file) adjusting the reloc addend as
5180 necessary.
5181
5182 This function does not have to worry about setting the reloc
5183 address or the reloc symbol index.
5184
5185 LOCAL_SYMS is a pointer to the swapped in local symbols.
5186
5187 LOCAL_SECTIONS is an array giving the section in the input file
5188 corresponding to the st_shndx field of each local symbol.
5189
5190 The global hash table entry for the global symbols can be found
5191 via elf_sym_hashes (input_bfd).
5192
5193 When generating relocatable output, this function must handle
5194 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
5195 going to be the section symbol corresponding to the output
5196 section, which means that the addend must be adjusted
5197 accordingly. */
5198
5199 static bfd_boolean
5200 ppc_elf_relocate_section (bfd *output_bfd,
5201 struct bfd_link_info *info,
5202 bfd *input_bfd,
5203 asection *input_section,
5204 bfd_byte *contents,
5205 Elf_Internal_Rela *relocs,
5206 Elf_Internal_Sym *local_syms,
5207 asection **local_sections)
5208 {
5209 Elf_Internal_Shdr *symtab_hdr;
5210 struct elf_link_hash_entry **sym_hashes;
5211 struct ppc_elf_link_hash_table *htab;
5212 Elf_Internal_Rela *rel;
5213 Elf_Internal_Rela *relend;
5214 Elf_Internal_Rela outrel;
5215 bfd_byte *loc;
5216 asection *got2, *sreloc = NULL;
5217 bfd_vma *local_got_offsets;
5218 bfd_boolean ret = TRUE;
5219
5220 #ifdef DEBUG
5221 _bfd_error_handler ("ppc_elf_relocate_section called for %B section %A, "
5222 "%ld relocations%s",
5223 input_bfd, input_section,
5224 (long) input_section->reloc_count,
5225 (info->relocatable) ? " (relocatable)" : "");
5226 #endif
5227
5228 got2 = bfd_get_section_by_name (input_bfd, ".got2");
5229
5230 if (info->relocatable)
5231 {
5232 if (got2 == NULL)
5233 return TRUE;
5234
5235 rel = relocs;
5236 relend = relocs + input_section->reloc_count;
5237 for (; rel < relend; rel++)
5238 {
5239 enum elf_ppc_reloc_type r_type;
5240
5241 r_type = ELF32_R_TYPE (rel->r_info);
5242 if (r_type == R_PPC_PLTREL24
5243 && rel->r_addend >= 32768)
5244 {
5245 /* R_PPC_PLTREL24 is rather special. If non-zero, the
5246 addend specifies the GOT pointer offset within .got2. */
5247 rel->r_addend += got2->output_offset;
5248 }
5249 }
5250 return TRUE;
5251 }
5252
5253 /* Initialize howto table if not already done. */
5254 if (!ppc_elf_howto_table[R_PPC_ADDR32])
5255 ppc_elf_howto_init ();
5256
5257 htab = ppc_elf_hash_table (info);
5258 local_got_offsets = elf_local_got_offsets (input_bfd);
5259 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
5260 sym_hashes = elf_sym_hashes (input_bfd);
5261 rel = relocs;
5262 relend = relocs + input_section->reloc_count;
5263 for (; rel < relend; rel++)
5264 {
5265 enum elf_ppc_reloc_type r_type;
5266 bfd_vma addend;
5267 bfd_reloc_status_type r;
5268 Elf_Internal_Sym *sym;
5269 asection *sec;
5270 struct elf_link_hash_entry *h;
5271 const char *sym_name;
5272 reloc_howto_type *howto;
5273 unsigned long r_symndx;
5274 bfd_vma relocation;
5275 bfd_vma branch_bit, insn, from;
5276 bfd_boolean unresolved_reloc;
5277 bfd_boolean warned;
5278 unsigned int tls_type, tls_mask, tls_gd;
5279
5280 r_type = ELF32_R_TYPE (rel->r_info);
5281 sym = NULL;
5282 sec = NULL;
5283 h = NULL;
5284 unresolved_reloc = FALSE;
5285 warned = FALSE;
5286 r_symndx = ELF32_R_SYM (rel->r_info);
5287
5288 if (r_symndx < symtab_hdr->sh_info)
5289 {
5290 sym = local_syms + r_symndx;
5291 sec = local_sections[r_symndx];
5292 sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
5293
5294 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
5295 }
5296 else
5297 {
5298 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
5299 r_symndx, symtab_hdr, sym_hashes,
5300 h, sec, relocation,
5301 unresolved_reloc, warned);
5302
5303 sym_name = h->root.root.string;
5304 }
5305
5306 /* TLS optimizations. Replace instruction sequences and relocs
5307 based on information we collected in tls_optimize. We edit
5308 RELOCS so that --emit-relocs will output something sensible
5309 for the final instruction stream. */
5310 tls_mask = 0;
5311 tls_gd = 0;
5312 if (IS_PPC_TLS_RELOC (r_type))
5313 {
5314 if (h != NULL)
5315 tls_mask = ((struct ppc_elf_link_hash_entry *) h)->tls_mask;
5316 else if (local_got_offsets != NULL)
5317 {
5318 char *lgot_masks;
5319 lgot_masks = (char *) (local_got_offsets + symtab_hdr->sh_info);
5320 tls_mask = lgot_masks[r_symndx];
5321 }
5322 }
5323
5324 /* Ensure reloc mapping code below stays sane. */
5325 if ((R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TLSGD16 & 3)
5326 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TLSGD16_LO & 3)
5327 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TLSGD16_HI & 3)
5328 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TLSGD16_HA & 3)
5329 || (R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TPREL16 & 3)
5330 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TPREL16_LO & 3)
5331 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TPREL16_HI & 3)
5332 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TPREL16_HA & 3))
5333 abort ();
5334 switch (r_type)
5335 {
5336 default:
5337 break;
5338
5339 case R_PPC_GOT_TPREL16:
5340 case R_PPC_GOT_TPREL16_LO:
5341 if (tls_mask != 0
5342 && (tls_mask & TLS_TPREL) == 0)
5343 {
5344 bfd_vma insn;
5345 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - 2);
5346 insn &= 31 << 21;
5347 insn |= 0x3c020000; /* addis 0,2,0 */
5348 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - 2);
5349 r_type = R_PPC_TPREL16_HA;
5350 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
5351 }
5352 break;
5353
5354 case R_PPC_TLS:
5355 if (tls_mask != 0
5356 && (tls_mask & TLS_TPREL) == 0)
5357 {
5358 bfd_vma insn, rtra;
5359 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
5360 if ((insn & ((31 << 26) | (31 << 11)))
5361 == ((31 << 26) | (2 << 11)))
5362 rtra = insn & ((1 << 26) - (1 << 16));
5363 else if ((insn & ((31 << 26) | (31 << 16)))
5364 == ((31 << 26) | (2 << 16)))
5365 rtra = (insn & (31 << 21)) | ((insn & (31 << 11)) << 5);
5366 else
5367 abort ();
5368 if ((insn & ((1 << 11) - (1 << 1))) == 266 << 1)
5369 /* add -> addi. */
5370 insn = 14 << 26;
5371 else if ((insn & (31 << 1)) == 23 << 1
5372 && ((insn & (31 << 6)) < 14 << 6
5373 || ((insn & (31 << 6)) >= 16 << 6
5374 && (insn & (31 << 6)) < 24 << 6)))
5375 /* load and store indexed -> dform. */
5376 insn = (32 | ((insn >> 6) & 31)) << 26;
5377 else if ((insn & (31 << 1)) == 21 << 1
5378 && (insn & (0x1a << 6)) == 0)
5379 /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
5380 insn = (((58 | ((insn >> 6) & 4)) << 26)
5381 | ((insn >> 6) & 1));
5382 else if ((insn & (31 << 1)) == 21 << 1
5383 && (insn & ((1 << 11) - (1 << 1))) == 341 << 1)
5384 /* lwax -> lwa. */
5385 insn = (58 << 26) | 2;
5386 else
5387 abort ();
5388 insn |= rtra;
5389 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
5390 r_type = R_PPC_TPREL16_LO;
5391 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
5392 /* Was PPC_TLS which sits on insn boundary, now
5393 PPC_TPREL16_LO which is at insn+2. */
5394 rel->r_offset += 2;
5395 }
5396 break;
5397
5398 case R_PPC_GOT_TLSGD16_HI:
5399 case R_PPC_GOT_TLSGD16_HA:
5400 tls_gd = TLS_TPRELGD;
5401 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
5402 goto tls_gdld_hi;
5403 break;
5404
5405 case R_PPC_GOT_TLSLD16_HI:
5406 case R_PPC_GOT_TLSLD16_HA:
5407 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
5408 {
5409 tls_gdld_hi:
5410 if ((tls_mask & tls_gd) != 0)
5411 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
5412 + R_PPC_GOT_TPREL16);
5413 else
5414 {
5415 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
5416 rel->r_offset -= 2;
5417 r_type = R_PPC_NONE;
5418 }
5419 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
5420 }
5421 break;
5422
5423 case R_PPC_GOT_TLSGD16:
5424 case R_PPC_GOT_TLSGD16_LO:
5425 tls_gd = TLS_TPRELGD;
5426 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
5427 goto tls_get_addr_check;
5428 break;
5429
5430 case R_PPC_GOT_TLSLD16:
5431 case R_PPC_GOT_TLSLD16_LO:
5432 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
5433 {
5434 tls_get_addr_check:
5435 if (rel + 1 < relend)
5436 {
5437 enum elf_ppc_reloc_type r_type2;
5438 unsigned long r_symndx2;
5439 struct elf_link_hash_entry *h2;
5440 bfd_vma insn1, insn2;
5441 bfd_vma offset;
5442
5443 /* The next instruction should be a call to
5444 __tls_get_addr. Peek at the reloc to be sure. */
5445 r_type2 = ELF32_R_TYPE (rel[1].r_info);
5446 r_symndx2 = ELF32_R_SYM (rel[1].r_info);
5447 if (r_symndx2 < symtab_hdr->sh_info
5448 || (r_type2 != R_PPC_REL14
5449 && r_type2 != R_PPC_REL14_BRTAKEN
5450 && r_type2 != R_PPC_REL14_BRNTAKEN
5451 && r_type2 != R_PPC_REL24
5452 && r_type2 != R_PPC_PLTREL24))
5453 break;
5454
5455 h2 = sym_hashes[r_symndx2 - symtab_hdr->sh_info];
5456 while (h2->root.type == bfd_link_hash_indirect
5457 || h2->root.type == bfd_link_hash_warning)
5458 h2 = (struct elf_link_hash_entry *) h2->root.u.i.link;
5459 if (h2 == NULL || h2 != htab->tls_get_addr)
5460 break;
5461
5462 /* OK, it checks out. Replace the call. */
5463 offset = rel[1].r_offset;
5464 insn1 = bfd_get_32 (output_bfd,
5465 contents + rel->r_offset - 2);
5466 if ((tls_mask & tls_gd) != 0)
5467 {
5468 /* IE */
5469 insn1 &= (1 << 26) - 1;
5470 insn1 |= 32 << 26; /* lwz */
5471 insn2 = 0x7c631214; /* add 3,3,2 */
5472 rel[1].r_info = ELF32_R_INFO (r_symndx2, R_PPC_NONE);
5473 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
5474 + R_PPC_GOT_TPREL16);
5475 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
5476 }
5477 else
5478 {
5479 /* LE */
5480 insn1 = 0x3c620000; /* addis 3,2,0 */
5481 insn2 = 0x38630000; /* addi 3,3,0 */
5482 if (tls_gd == 0)
5483 {
5484 /* Was an LD reloc. */
5485 r_symndx = 0;
5486 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
5487 rel[1].r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
5488 }
5489 r_type = R_PPC_TPREL16_HA;
5490 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
5491 rel[1].r_info = ELF32_R_INFO (r_symndx,
5492 R_PPC_TPREL16_LO);
5493 rel[1].r_offset += 2;
5494 }
5495 bfd_put_32 (output_bfd, insn1, contents + rel->r_offset - 2);
5496 bfd_put_32 (output_bfd, insn2, contents + offset);
5497 if (tls_gd == 0)
5498 {
5499 /* We changed the symbol on an LD reloc. Start over
5500 in order to get h, sym, sec etc. right. */
5501 rel--;
5502 continue;
5503 }
5504 }
5505 }
5506 break;
5507 }
5508
5509 /* Handle other relocations that tweak non-addend part of insn. */
5510 branch_bit = 0;
5511 switch (r_type)
5512 {
5513 default:
5514 break;
5515
5516 /* Branch taken prediction relocations. */
5517 case R_PPC_ADDR14_BRTAKEN:
5518 case R_PPC_REL14_BRTAKEN:
5519 branch_bit = BRANCH_PREDICT_BIT;
5520 /* Fall thru */
5521
5522 /* Branch not taken prediction relocations. */
5523 case R_PPC_ADDR14_BRNTAKEN:
5524 case R_PPC_REL14_BRNTAKEN:
5525 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
5526 insn &= ~BRANCH_PREDICT_BIT;
5527 insn |= branch_bit;
5528
5529 from = (rel->r_offset
5530 + input_section->output_offset
5531 + input_section->output_section->vma);
5532
5533 /* Invert 'y' bit if not the default. */
5534 if ((bfd_signed_vma) (relocation + rel->r_addend - from) < 0)
5535 insn ^= BRANCH_PREDICT_BIT;
5536
5537 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
5538 break;
5539 }
5540
5541 addend = rel->r_addend;
5542 tls_type = 0;
5543 howto = NULL;
5544 if (r_type < R_PPC_max)
5545 howto = ppc_elf_howto_table[r_type];
5546 switch (r_type)
5547 {
5548 default:
5549 (*_bfd_error_handler)
5550 (_("%B: unknown relocation type %d for symbol %s"),
5551 input_bfd, (int) r_type, sym_name);
5552
5553 bfd_set_error (bfd_error_bad_value);
5554 ret = FALSE;
5555 continue;
5556
5557 case R_PPC_NONE:
5558 case R_PPC_TLS:
5559 case R_PPC_EMB_MRKREF:
5560 case R_PPC_GNU_VTINHERIT:
5561 case R_PPC_GNU_VTENTRY:
5562 continue;
5563
5564 /* GOT16 relocations. Like an ADDR16 using the symbol's
5565 address in the GOT as relocation value instead of the
5566 symbol's value itself. Also, create a GOT entry for the
5567 symbol and put the symbol value there. */
5568 case R_PPC_GOT_TLSGD16:
5569 case R_PPC_GOT_TLSGD16_LO:
5570 case R_PPC_GOT_TLSGD16_HI:
5571 case R_PPC_GOT_TLSGD16_HA:
5572 tls_type = TLS_TLS | TLS_GD;
5573 goto dogot;
5574
5575 case R_PPC_GOT_TLSLD16:
5576 case R_PPC_GOT_TLSLD16_LO:
5577 case R_PPC_GOT_TLSLD16_HI:
5578 case R_PPC_GOT_TLSLD16_HA:
5579 tls_type = TLS_TLS | TLS_LD;
5580 goto dogot;
5581
5582 case R_PPC_GOT_TPREL16:
5583 case R_PPC_GOT_TPREL16_LO:
5584 case R_PPC_GOT_TPREL16_HI:
5585 case R_PPC_GOT_TPREL16_HA:
5586 tls_type = TLS_TLS | TLS_TPREL;
5587 goto dogot;
5588
5589 case R_PPC_GOT_DTPREL16:
5590 case R_PPC_GOT_DTPREL16_LO:
5591 case R_PPC_GOT_DTPREL16_HI:
5592 case R_PPC_GOT_DTPREL16_HA:
5593 tls_type = TLS_TLS | TLS_DTPREL;
5594 goto dogot;
5595
5596 case R_PPC_GOT16:
5597 case R_PPC_GOT16_LO:
5598 case R_PPC_GOT16_HI:
5599 case R_PPC_GOT16_HA:
5600 dogot:
5601 {
5602 /* Relocation is to the entry for this symbol in the global
5603 offset table. */
5604 bfd_vma off;
5605 bfd_vma *offp;
5606 unsigned long indx;
5607
5608 if (htab->got == NULL)
5609 abort ();
5610
5611 indx = 0;
5612 if (tls_type == (TLS_TLS | TLS_LD)
5613 && (h == NULL
5614 || !h->def_dynamic))
5615 offp = &htab->tlsld_got.offset;
5616 else if (h != NULL)
5617 {
5618 bfd_boolean dyn;
5619 dyn = htab->elf.dynamic_sections_created;
5620 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
5621 || (info->shared
5622 && SYMBOL_REFERENCES_LOCAL (info, h)))
5623 /* This is actually a static link, or it is a
5624 -Bsymbolic link and the symbol is defined
5625 locally, or the symbol was forced to be local
5626 because of a version file. */
5627 ;
5628 else
5629 {
5630 indx = h->dynindx;
5631 unresolved_reloc = FALSE;
5632 }
5633 offp = &h->got.offset;
5634 }
5635 else
5636 {
5637 if (local_got_offsets == NULL)
5638 abort ();
5639 offp = &local_got_offsets[r_symndx];
5640 }
5641
5642 /* The offset must always be a multiple of 4. We use the
5643 least significant bit to record whether we have already
5644 processed this entry. */
5645 off = *offp;
5646 if ((off & 1) != 0)
5647 off &= ~1;
5648 else
5649 {
5650 unsigned int tls_m = (tls_mask
5651 & (TLS_LD | TLS_GD | TLS_DTPREL
5652 | TLS_TPREL | TLS_TPRELGD));
5653
5654 if (offp == &htab->tlsld_got.offset)
5655 tls_m = TLS_LD;
5656 else if (h == NULL
5657 || !h->def_dynamic)
5658 tls_m &= ~TLS_LD;
5659
5660 /* We might have multiple got entries for this sym.
5661 Initialize them all. */
5662 do
5663 {
5664 int tls_ty = 0;
5665
5666 if ((tls_m & TLS_LD) != 0)
5667 {
5668 tls_ty = TLS_TLS | TLS_LD;
5669 tls_m &= ~TLS_LD;
5670 }
5671 else if ((tls_m & TLS_GD) != 0)
5672 {
5673 tls_ty = TLS_TLS | TLS_GD;
5674 tls_m &= ~TLS_GD;
5675 }
5676 else if ((tls_m & TLS_DTPREL) != 0)
5677 {
5678 tls_ty = TLS_TLS | TLS_DTPREL;
5679 tls_m &= ~TLS_DTPREL;
5680 }
5681 else if ((tls_m & (TLS_TPREL | TLS_TPRELGD)) != 0)
5682 {
5683 tls_ty = TLS_TLS | TLS_TPREL;
5684 tls_m = 0;
5685 }
5686
5687 /* Generate relocs for the dynamic linker. */
5688 if ((info->shared || indx != 0)
5689 && (h == NULL
5690 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
5691 || h->root.type != bfd_link_hash_undefweak))
5692 {
5693 outrel.r_offset = (htab->got->output_section->vma
5694 + htab->got->output_offset
5695 + off);
5696 outrel.r_addend = 0;
5697 if (tls_ty & (TLS_LD | TLS_GD))
5698 {
5699 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPMOD32);
5700 if (tls_ty == (TLS_TLS | TLS_GD))
5701 {
5702 loc = htab->relgot->contents;
5703 loc += (htab->relgot->reloc_count++
5704 * sizeof (Elf32_External_Rela));
5705 bfd_elf32_swap_reloca_out (output_bfd,
5706 &outrel, loc);
5707 outrel.r_offset += 4;
5708 outrel.r_info
5709 = ELF32_R_INFO (indx, R_PPC_DTPREL32);
5710 }
5711 }
5712 else if (tls_ty == (TLS_TLS | TLS_DTPREL))
5713 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPREL32);
5714 else if (tls_ty == (TLS_TLS | TLS_TPREL))
5715 outrel.r_info = ELF32_R_INFO (indx, R_PPC_TPREL32);
5716 else if (indx == 0)
5717 outrel.r_info = ELF32_R_INFO (indx, R_PPC_RELATIVE);
5718 else
5719 outrel.r_info = ELF32_R_INFO (indx, R_PPC_GLOB_DAT);
5720 if (indx == 0)
5721 {
5722 outrel.r_addend += relocation;
5723 if (tls_ty & (TLS_GD | TLS_DTPREL | TLS_TPREL))
5724 outrel.r_addend -= htab->elf.tls_sec->vma;
5725 }
5726 loc = htab->relgot->contents;
5727 loc += (htab->relgot->reloc_count++
5728 * sizeof (Elf32_External_Rela));
5729 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
5730 }
5731
5732 /* Init the .got section contents if we're not
5733 emitting a reloc. */
5734 else
5735 {
5736 bfd_vma value = relocation;
5737
5738 if (tls_ty == (TLS_TLS | TLS_LD))
5739 value = 1;
5740 else if (tls_ty != 0)
5741 {
5742 value -= htab->elf.tls_sec->vma + DTP_OFFSET;
5743 if (tls_ty == (TLS_TLS | TLS_TPREL))
5744 value += DTP_OFFSET - TP_OFFSET;
5745
5746 if (tls_ty == (TLS_TLS | TLS_GD))
5747 {
5748 bfd_put_32 (output_bfd, value,
5749 htab->got->contents + off + 4);
5750 value = 1;
5751 }
5752 }
5753 bfd_put_32 (output_bfd, value,
5754 htab->got->contents + off);
5755 }
5756
5757 off += 4;
5758 if (tls_ty & (TLS_LD | TLS_GD))
5759 off += 4;
5760 }
5761 while (tls_m != 0);
5762
5763 off = *offp;
5764 *offp = off | 1;
5765 }
5766
5767 if (off >= (bfd_vma) -2)
5768 abort ();
5769
5770 if ((tls_type & TLS_TLS) != 0)
5771 {
5772 if (tls_type != (TLS_TLS | TLS_LD))
5773 {
5774 if ((tls_mask & TLS_LD) != 0
5775 && !(h == NULL
5776 || !h->def_dynamic))
5777 off += 8;
5778 if (tls_type != (TLS_TLS | TLS_GD))
5779 {
5780 if ((tls_mask & TLS_GD) != 0)
5781 off += 8;
5782 if (tls_type != (TLS_TLS | TLS_DTPREL))
5783 {
5784 if ((tls_mask & TLS_DTPREL) != 0)
5785 off += 4;
5786 }
5787 }
5788 }
5789 }
5790
5791 relocation = htab->got->output_offset + off;
5792 relocation -= htab->elf.hgot->root.u.def.value;
5793
5794 /* Addends on got relocations don't make much sense.
5795 x+off@got is actually x@got+off, and since the got is
5796 generated by a hash table traversal, the value in the
5797 got at entry m+n bears little relation to the entry m. */
5798 if (addend != 0)
5799 (*_bfd_error_handler)
5800 (_("%B(%A+0x%lx): non-zero addend on %s reloc against `%s'"),
5801 input_bfd,
5802 input_section,
5803 (long) rel->r_offset,
5804 howto->name,
5805 sym_name);
5806 }
5807 break;
5808
5809 /* Relocations that need no special processing. */
5810 case R_PPC_LOCAL24PC:
5811 /* It makes no sense to point a local relocation
5812 at a symbol not in this object. */
5813 if (unresolved_reloc)
5814 {
5815 if (! (*info->callbacks->undefined_symbol) (info,
5816 h->root.root.string,
5817 input_bfd,
5818 input_section,
5819 rel->r_offset,
5820 TRUE))
5821 return FALSE;
5822 continue;
5823 }
5824 break;
5825
5826 case R_PPC_DTPREL16:
5827 case R_PPC_DTPREL16_LO:
5828 case R_PPC_DTPREL16_HI:
5829 case R_PPC_DTPREL16_HA:
5830 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
5831 break;
5832
5833 /* Relocations that may need to be propagated if this is a shared
5834 object. */
5835 case R_PPC_TPREL16:
5836 case R_PPC_TPREL16_LO:
5837 case R_PPC_TPREL16_HI:
5838 case R_PPC_TPREL16_HA:
5839 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
5840 /* The TPREL16 relocs shouldn't really be used in shared
5841 libs as they will result in DT_TEXTREL being set, but
5842 support them anyway. */
5843 goto dodyn;
5844
5845 case R_PPC_TPREL32:
5846 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
5847 goto dodyn;
5848
5849 case R_PPC_DTPREL32:
5850 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
5851 goto dodyn;
5852
5853 case R_PPC_DTPMOD32:
5854 relocation = 1;
5855 addend = 0;
5856 goto dodyn;
5857
5858 case R_PPC_REL16:
5859 case R_PPC_REL16_LO:
5860 case R_PPC_REL16_HI:
5861 case R_PPC_REL16_HA:
5862 break;
5863
5864 case R_PPC_REL24:
5865 case R_PPC_REL32:
5866 case R_PPC_REL14:
5867 case R_PPC_REL14_BRTAKEN:
5868 case R_PPC_REL14_BRNTAKEN:
5869 /* If these relocations are not to a named symbol, they can be
5870 handled right here, no need to bother the dynamic linker. */
5871 if (SYMBOL_REFERENCES_LOCAL (info, h)
5872 || h == htab->elf.hgot)
5873 break;
5874 /* fall through */
5875
5876 /* Relocations that always need to be propagated if this is a shared
5877 object. */
5878 case R_PPC_ADDR32:
5879 case R_PPC_ADDR24:
5880 case R_PPC_ADDR16:
5881 case R_PPC_ADDR16_LO:
5882 case R_PPC_ADDR16_HI:
5883 case R_PPC_ADDR16_HA:
5884 case R_PPC_ADDR14:
5885 case R_PPC_ADDR14_BRTAKEN:
5886 case R_PPC_ADDR14_BRNTAKEN:
5887 case R_PPC_UADDR32:
5888 case R_PPC_UADDR16:
5889 /* r_symndx will be zero only for relocs against symbols
5890 from removed linkonce sections, or sections discarded by
5891 a linker script. */
5892 dodyn:
5893 if (r_symndx == 0)
5894 break;
5895 /* Fall thru. */
5896
5897 if ((input_section->flags & SEC_ALLOC) == 0)
5898 break;
5899 /* Fall thru. */
5900
5901 if ((info->shared
5902 && (h == NULL
5903 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
5904 || h->root.type != bfd_link_hash_undefweak)
5905 && (MUST_BE_DYN_RELOC (r_type)
5906 || !SYMBOL_CALLS_LOCAL (info, h)))
5907 || (ELIMINATE_COPY_RELOCS
5908 && !info->shared
5909 && h != NULL
5910 && h->dynindx != -1
5911 && !h->non_got_ref
5912 && h->def_dynamic
5913 && !h->def_regular))
5914 {
5915 int skip;
5916
5917 #ifdef DEBUG
5918 fprintf (stderr, "ppc_elf_relocate_section needs to "
5919 "create relocation for %s\n",
5920 (h && h->root.root.string
5921 ? h->root.root.string : "<unknown>"));
5922 #endif
5923
5924 /* When generating a shared object, these relocations
5925 are copied into the output file to be resolved at run
5926 time. */
5927 if (sreloc == NULL)
5928 {
5929 const char *name;
5930
5931 name = (bfd_elf_string_from_elf_section
5932 (input_bfd,
5933 elf_elfheader (input_bfd)->e_shstrndx,
5934 elf_section_data (input_section)->rel_hdr.sh_name));
5935 if (name == NULL)
5936 return FALSE;
5937
5938 BFD_ASSERT (strncmp (name, ".rela", 5) == 0
5939 && strcmp (bfd_get_section_name (input_bfd,
5940 input_section),
5941 name + 5) == 0);
5942
5943 sreloc = bfd_get_section_by_name (htab->elf.dynobj, name);
5944 BFD_ASSERT (sreloc != NULL);
5945 }
5946
5947 skip = 0;
5948
5949 outrel.r_offset =
5950 _bfd_elf_section_offset (output_bfd, info, input_section,
5951 rel->r_offset);
5952 if (outrel.r_offset == (bfd_vma) -1
5953 || outrel.r_offset == (bfd_vma) -2)
5954 skip = (int) outrel.r_offset;
5955 outrel.r_offset += (input_section->output_section->vma
5956 + input_section->output_offset);
5957
5958 if (skip)
5959 memset (&outrel, 0, sizeof outrel);
5960 else if (!SYMBOL_REFERENCES_LOCAL (info, h))
5961 {
5962 unresolved_reloc = FALSE;
5963 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
5964 outrel.r_addend = rel->r_addend;
5965 }
5966 else
5967 {
5968 outrel.r_addend = relocation + rel->r_addend;
5969
5970 if (r_type == R_PPC_ADDR32)
5971 outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
5972 else
5973 {
5974 long indx;
5975
5976 if (bfd_is_abs_section (sec))
5977 indx = 0;
5978 else if (sec == NULL || sec->owner == NULL)
5979 {
5980 bfd_set_error (bfd_error_bad_value);
5981 return FALSE;
5982 }
5983 else
5984 {
5985 asection *osec;
5986
5987 /* We are turning this relocation into one
5988 against a section symbol. It would be
5989 proper to subtract the symbol's value,
5990 osec->vma, from the emitted reloc addend,
5991 but ld.so expects buggy relocs. */
5992 osec = sec->output_section;
5993 indx = elf_section_data (osec)->dynindx;
5994 BFD_ASSERT (indx > 0);
5995 #ifdef DEBUG
5996 if (indx <= 0)
5997 printf ("indx=%d section=%s flags=%08x name=%s\n",
5998 indx, osec->name, osec->flags,
5999 h->root.root.string);
6000 #endif
6001 }
6002
6003 outrel.r_info = ELF32_R_INFO (indx, r_type);
6004 }
6005 }
6006
6007 loc = sreloc->contents;
6008 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
6009 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
6010
6011 if (skip == -1)
6012 continue;
6013
6014 /* This reloc will be computed at runtime. We clear the memory
6015 so that it contains predictable value. */
6016 if (! skip
6017 && ((input_section->flags & SEC_ALLOC) != 0
6018 || ELF32_R_TYPE (outrel.r_info) != R_PPC_RELATIVE))
6019 {
6020 relocation = howto->pc_relative ? outrel.r_offset : 0;
6021 addend = 0;
6022 break;
6023 }
6024 }
6025 break;
6026
6027 case R_PPC_RELAX32PC_PLT:
6028 case R_PPC_RELAX32_PLT:
6029 {
6030 struct plt_entry *ent = find_plt_ent (h, got2, addend);
6031
6032 if (!htab->old_plt)
6033 relocation = (htab->glink->output_section->vma
6034 + htab->glink->output_offset
6035 + ent->glink_offset);
6036 else
6037 relocation = (htab->plt->output_section->vma
6038 + htab->plt->output_offset
6039 + ent->plt.offset);
6040 addend = 0;
6041 }
6042 if (r_type == R_PPC_RELAX32_PLT)
6043 goto relax32;
6044 /* Fall thru */
6045
6046 case R_PPC_RELAX32PC:
6047 relocation -= (input_section->output_section->vma
6048 + input_section->output_offset
6049 + rel->r_offset - 4);
6050 /* Fall thru */
6051
6052 case R_PPC_RELAX32:
6053 relax32:
6054 {
6055 unsigned long t0;
6056 unsigned long t1;
6057
6058 t0 = bfd_get_32 (output_bfd, contents + rel->r_offset);
6059 t1 = bfd_get_32 (output_bfd, contents + rel->r_offset + 4);
6060
6061 /* We're clearing the bits for R_PPC_ADDR16_HA
6062 and R_PPC_ADDR16_LO here. */
6063 t0 &= ~0xffff;
6064 t1 &= ~0xffff;
6065
6066 /* t0 is HA, t1 is LO */
6067 relocation += addend;
6068 t0 |= ((relocation + 0x8000) >> 16) & 0xffff;
6069 t1 |= relocation & 0xffff;
6070
6071 bfd_put_32 (output_bfd, t0, contents + rel->r_offset);
6072 bfd_put_32 (output_bfd, t1, contents + rel->r_offset + 4);
6073 }
6074 continue;
6075
6076 /* Indirect .sdata relocation. */
6077 case R_PPC_EMB_SDAI16:
6078 BFD_ASSERT (htab->sdata[0].section != NULL);
6079 relocation
6080 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[0],
6081 h, relocation, rel);
6082 break;
6083
6084 /* Indirect .sdata2 relocation. */
6085 case R_PPC_EMB_SDA2I16:
6086 BFD_ASSERT (htab->sdata[1].section != NULL);
6087 relocation
6088 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[1],
6089 h, relocation, rel);
6090 break;
6091
6092 /* Handle the TOC16 reloc. We want to use the offset within the .got
6093 section, not the actual VMA. This is appropriate when generating
6094 an embedded ELF object, for which the .got section acts like the
6095 AIX .toc section. */
6096 case R_PPC_TOC16: /* phony GOT16 relocations */
6097 BFD_ASSERT (sec != NULL);
6098 BFD_ASSERT (bfd_is_und_section (sec)
6099 || strcmp (bfd_get_section_name (abfd, sec), ".got") == 0
6100 || strcmp (bfd_get_section_name (abfd, sec), ".cgot") == 0);
6101
6102 addend -= sec->output_section->vma + sec->output_offset + 0x8000;
6103 break;
6104
6105 case R_PPC_PLTREL24:
6106 /* Relocation is to the entry for this symbol in the
6107 procedure linkage table. */
6108 {
6109 struct plt_entry *ent = find_plt_ent (h, got2, addend);
6110
6111 addend = 0;
6112 if (ent == NULL
6113 || htab->plt == NULL)
6114 {
6115 /* We didn't make a PLT entry for this symbol. This
6116 happens when statically linking PIC code, or when
6117 using -Bsymbolic. */
6118 break;
6119 }
6120
6121 unresolved_reloc = FALSE;
6122 if (!htab->old_plt)
6123 relocation = (htab->glink->output_section->vma
6124 + htab->glink->output_offset
6125 + ent->glink_offset);
6126 else
6127 relocation = (htab->plt->output_section->vma
6128 + htab->plt->output_offset
6129 + ent->plt.offset);
6130 }
6131 break;
6132
6133 /* Relocate against _SDA_BASE_. */
6134 case R_PPC_SDAREL16:
6135 {
6136 const char *name;
6137
6138 BFD_ASSERT (sec != NULL);
6139 name = bfd_get_section_name (abfd, sec->output_section);
6140 if (! ((strncmp (name, ".sdata", 6) == 0
6141 && (name[6] == 0 || name[6] == '.'))
6142 || (strncmp (name, ".sbss", 5) == 0
6143 && (name[5] == 0 || name[5] == '.'))))
6144 {
6145 (*_bfd_error_handler)
6146 (_("%B: the target (%s) of a %s relocation is "
6147 "in the wrong output section (%s)"),
6148 input_bfd,
6149 sym_name,
6150 howto->name,
6151 name);
6152 }
6153 addend -= htab->sdata[0].sym_val;
6154 }
6155 break;
6156
6157 /* Relocate against _SDA2_BASE_. */
6158 case R_PPC_EMB_SDA2REL:
6159 {
6160 const char *name;
6161
6162 BFD_ASSERT (sec != NULL);
6163 name = bfd_get_section_name (abfd, sec->output_section);
6164 if (! (strncmp (name, ".sdata2", 7) == 0
6165 || strncmp (name, ".sbss2", 6) == 0))
6166 {
6167 (*_bfd_error_handler)
6168 (_("%B: the target (%s) of a %s relocation is "
6169 "in the wrong output section (%s)"),
6170 input_bfd,
6171 sym_name,
6172 howto->name,
6173 name);
6174
6175 bfd_set_error (bfd_error_bad_value);
6176 ret = FALSE;
6177 continue;
6178 }
6179 addend -= htab->sdata[1].sym_val;
6180 }
6181 break;
6182
6183 /* Relocate against either _SDA_BASE_, _SDA2_BASE_, or 0. */
6184 case R_PPC_EMB_SDA21:
6185 case R_PPC_EMB_RELSDA:
6186 {
6187 const char *name;
6188 int reg;
6189
6190 BFD_ASSERT (sec != NULL);
6191 name = bfd_get_section_name (abfd, sec->output_section);
6192 if (((strncmp (name, ".sdata", 6) == 0
6193 && (name[6] == 0 || name[6] == '.'))
6194 || (strncmp (name, ".sbss", 5) == 0
6195 && (name[5] == 0 || name[5] == '.'))))
6196 {
6197 reg = 13;
6198 addend -= htab->sdata[0].sym_val;
6199 }
6200
6201 else if (strncmp (name, ".sdata2", 7) == 0
6202 || strncmp (name, ".sbss2", 6) == 0)
6203 {
6204 reg = 2;
6205 addend -= htab->sdata[1].sym_val;
6206 }
6207
6208 else if (strcmp (name, ".PPC.EMB.sdata0") == 0
6209 || strcmp (name, ".PPC.EMB.sbss0") == 0)
6210 {
6211 reg = 0;
6212 }
6213
6214 else
6215 {
6216 (*_bfd_error_handler)
6217 (_("%B: the target (%s) of a %s relocation is "
6218 "in the wrong output section (%s)"),
6219 input_bfd,
6220 sym_name,
6221 howto->name,
6222 name);
6223
6224 bfd_set_error (bfd_error_bad_value);
6225 ret = FALSE;
6226 continue;
6227 }
6228
6229 if (r_type == R_PPC_EMB_SDA21)
6230 { /* fill in register field */
6231 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
6232 insn = (insn & ~RA_REGISTER_MASK) | (reg << RA_REGISTER_SHIFT);
6233 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
6234 }
6235 }
6236 break;
6237
6238 /* Relocate against the beginning of the section. */
6239 case R_PPC_SECTOFF:
6240 case R_PPC_SECTOFF_LO:
6241 case R_PPC_SECTOFF_HI:
6242 case R_PPC_SECTOFF_HA:
6243 BFD_ASSERT (sec != NULL);
6244 addend -= sec->output_section->vma;
6245 break;
6246
6247 /* Negative relocations. */
6248 case R_PPC_EMB_NADDR32:
6249 case R_PPC_EMB_NADDR16:
6250 case R_PPC_EMB_NADDR16_LO:
6251 case R_PPC_EMB_NADDR16_HI:
6252 case R_PPC_EMB_NADDR16_HA:
6253 addend -= 2 * relocation;
6254 break;
6255
6256 case R_PPC_COPY:
6257 case R_PPC_GLOB_DAT:
6258 case R_PPC_JMP_SLOT:
6259 case R_PPC_RELATIVE:
6260 case R_PPC_PLT32:
6261 case R_PPC_PLTREL32:
6262 case R_PPC_PLT16_LO:
6263 case R_PPC_PLT16_HI:
6264 case R_PPC_PLT16_HA:
6265 case R_PPC_ADDR30:
6266 case R_PPC_EMB_RELSEC16:
6267 case R_PPC_EMB_RELST_LO:
6268 case R_PPC_EMB_RELST_HI:
6269 case R_PPC_EMB_RELST_HA:
6270 case R_PPC_EMB_BIT_FLD:
6271 (*_bfd_error_handler)
6272 (_("%B: relocation %s is not yet supported for symbol %s."),
6273 input_bfd,
6274 howto->name,
6275 sym_name);
6276
6277 bfd_set_error (bfd_error_invalid_operation);
6278 ret = FALSE;
6279 continue;
6280 }
6281
6282 /* Do any further special processing. */
6283 switch (r_type)
6284 {
6285 default:
6286 break;
6287
6288 case R_PPC_ADDR16_HA:
6289 case R_PPC_REL16_HA:
6290 case R_PPC_GOT16_HA:
6291 case R_PPC_PLT16_HA:
6292 case R_PPC_SECTOFF_HA:
6293 case R_PPC_TPREL16_HA:
6294 case R_PPC_DTPREL16_HA:
6295 case R_PPC_GOT_TLSGD16_HA:
6296 case R_PPC_GOT_TLSLD16_HA:
6297 case R_PPC_GOT_TPREL16_HA:
6298 case R_PPC_GOT_DTPREL16_HA:
6299 case R_PPC_EMB_NADDR16_HA:
6300 case R_PPC_EMB_RELST_HA:
6301 /* It's just possible that this symbol is a weak symbol
6302 that's not actually defined anywhere. In that case,
6303 'sec' would be NULL, and we should leave the symbol
6304 alone (it will be set to zero elsewhere in the link). */
6305 if (sec != NULL)
6306 /* Add 0x10000 if sign bit in 0:15 is set.
6307 Bits 0:15 are not used. */
6308 addend += 0x8000;
6309 break;
6310 }
6311
6312 #ifdef DEBUG
6313 fprintf (stderr, "\ttype = %s (%d), name = %s, symbol index = %ld, "
6314 "offset = %ld, addend = %ld\n",
6315 howto->name,
6316 (int) r_type,
6317 sym_name,
6318 r_symndx,
6319 (long) rel->r_offset,
6320 (long) addend);
6321 #endif
6322
6323 if (unresolved_reloc
6324 && !((input_section->flags & SEC_DEBUGGING) != 0
6325 && h->def_dynamic))
6326 {
6327 (*_bfd_error_handler)
6328 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
6329 input_bfd,
6330 input_section,
6331 (long) rel->r_offset,
6332 howto->name,
6333 sym_name);
6334 ret = FALSE;
6335 }
6336
6337 r = _bfd_final_link_relocate (howto,
6338 input_bfd,
6339 input_section,
6340 contents,
6341 rel->r_offset,
6342 relocation,
6343 addend);
6344
6345 if (r != bfd_reloc_ok)
6346 {
6347 if (r == bfd_reloc_overflow)
6348 {
6349 if (warned)
6350 continue;
6351 if (h != NULL
6352 && h->root.type == bfd_link_hash_undefweak
6353 && howto->pc_relative)
6354 {
6355 /* Assume this is a call protected by other code that
6356 detect the symbol is undefined. If this is the case,
6357 we can safely ignore the overflow. If not, the
6358 program is hosed anyway, and a little warning isn't
6359 going to help. */
6360
6361 continue;
6362 }
6363
6364 if (! (*info->callbacks->reloc_overflow) (info,
6365 (h ? &h->root : NULL),
6366 sym_name,
6367 howto->name,
6368 rel->r_addend,
6369 input_bfd,
6370 input_section,
6371 rel->r_offset))
6372 return FALSE;
6373 }
6374 else
6375 {
6376 (*_bfd_error_handler)
6377 (_("%B(%A+0x%lx): %s reloc against `%s': error %d"),
6378 input_bfd, input_section,
6379 (long) rel->r_offset, howto->name, sym_name, (int) r);
6380 ret = FALSE;
6381 }
6382 }
6383 }
6384
6385 #ifdef DEBUG
6386 fprintf (stderr, "\n");
6387 #endif
6388
6389 return ret;
6390 }
6391 \f
6392 #define PPC_LO(v) ((v) & 0xffff)
6393 #define PPC_HI(v) (((v) >> 16) & 0xffff)
6394 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
6395
6396 /* Finish up dynamic symbol handling. We set the contents of various
6397 dynamic sections here. */
6398
6399 static bfd_boolean
6400 ppc_elf_finish_dynamic_symbol (bfd *output_bfd,
6401 struct bfd_link_info *info,
6402 struct elf_link_hash_entry *h,
6403 Elf_Internal_Sym *sym)
6404 {
6405 struct ppc_elf_link_hash_table *htab;
6406 struct plt_entry *ent;
6407 bfd_boolean doneone;
6408
6409 #ifdef DEBUG
6410 fprintf (stderr, "ppc_elf_finish_dynamic_symbol called for %s",
6411 h->root.root.string);
6412 #endif
6413
6414 htab = ppc_elf_hash_table (info);
6415 BFD_ASSERT (htab->elf.dynobj != NULL);
6416
6417 doneone = FALSE;
6418 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
6419 if (ent->plt.offset != (bfd_vma) -1)
6420 {
6421 if (!doneone)
6422 {
6423 Elf_Internal_Rela rela;
6424 bfd_byte *loc;
6425 bfd_vma reloc_index;
6426
6427 /* This symbol has an entry in the procedure linkage table.
6428 Set it up. */
6429 if (htab->old_plt)
6430 {
6431 /* We don't need to fill in the .plt. The ppc dynamic
6432 linker will fill it in. */
6433 }
6434 else
6435 {
6436 bfd_vma val = (htab->glink_pltresolve + ent->plt.offset
6437 + htab->glink->output_section->vma
6438 + htab->glink->output_offset);
6439 bfd_put_32 (output_bfd, val,
6440 htab->plt->contents + ent->plt.offset);
6441 }
6442
6443 /* Fill in the entry in the .rela.plt section. */
6444 rela.r_offset = (htab->plt->output_section->vma
6445 + htab->plt->output_offset
6446 + ent->plt.offset);
6447 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_JMP_SLOT);
6448 rela.r_addend = 0;
6449
6450 if (!htab->old_plt)
6451 reloc_index = ent->plt.offset / 4;
6452 else
6453 {
6454 reloc_index = ((ent->plt.offset - PLT_INITIAL_ENTRY_SIZE)
6455 / PLT_SLOT_SIZE);
6456 if (reloc_index > PLT_NUM_SINGLE_ENTRIES)
6457 reloc_index -= (reloc_index - PLT_NUM_SINGLE_ENTRIES) / 2;
6458 }
6459 loc = (htab->relplt->contents
6460 + reloc_index * sizeof (Elf32_External_Rela));
6461 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
6462
6463 if (!h->def_regular)
6464 {
6465 /* Mark the symbol as undefined, rather than as defined in
6466 the .plt section. Leave the value alone. */
6467 sym->st_shndx = SHN_UNDEF;
6468 /* If the symbol is weak, we do need to clear the value.
6469 Otherwise, the PLT entry would provide a definition for
6470 the symbol even if the symbol wasn't defined anywhere,
6471 and so the symbol would never be NULL. */
6472 if (!h->ref_regular_nonweak)
6473 sym->st_value = 0;
6474 }
6475 doneone = TRUE;
6476 }
6477
6478 if (!htab->old_plt)
6479 {
6480 bfd_vma plt;
6481 unsigned char *p;
6482
6483 plt = (ent->plt.offset
6484 + htab->plt->output_section->vma
6485 + htab->plt->output_offset);
6486 p = (unsigned char *) htab->glink->contents + ent->glink_offset;
6487
6488 if (info->shared || info->pie)
6489 {
6490 bfd_vma got = 0;
6491
6492 if (ent->addend >= 32768)
6493 got = (ent->addend
6494 + ent->sec->output_section->vma
6495 + ent->sec->output_offset);
6496 else if (htab->elf.hgot != NULL)
6497 got = (htab->elf.hgot->root.u.def.value
6498 + htab->elf.hgot->root.u.def.section->output_section->vma
6499 + htab->elf.hgot->root.u.def.section->output_offset);
6500
6501 plt -= got;
6502
6503 if (plt + 0x8000 < 0x10000)
6504 {
6505 bfd_put_32 (output_bfd, LWZ_11_30 + PPC_LO (plt), p);
6506 p += 4;
6507 bfd_put_32 (output_bfd, MTCTR_11, p);
6508 p += 4;
6509 bfd_put_32 (output_bfd, BCTR, p);
6510 p += 4;
6511 bfd_put_32 (output_bfd, NOP, p);
6512 p += 4;
6513 }
6514 else
6515 {
6516 bfd_put_32 (output_bfd, ADDIS_11_30 + PPC_HA (plt), p);
6517 p += 4;
6518 bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
6519 p += 4;
6520 bfd_put_32 (output_bfd, MTCTR_11, p);
6521 p += 4;
6522 bfd_put_32 (output_bfd, BCTR, p);
6523 p += 4;
6524 }
6525 }
6526 else
6527 {
6528 bfd_put_32 (output_bfd, LIS_11 + PPC_HA (plt), p);
6529 p += 4;
6530 bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
6531 p += 4;
6532 bfd_put_32 (output_bfd, MTCTR_11, p);
6533 p += 4;
6534 bfd_put_32 (output_bfd, BCTR, p);
6535 p += 4;
6536
6537 /* We only need one non-PIC glink stub. */
6538 break;
6539 }
6540 }
6541 else
6542 break;
6543 }
6544
6545 if (h->needs_copy)
6546 {
6547 asection *s;
6548 Elf_Internal_Rela rela;
6549 bfd_byte *loc;
6550
6551 /* This symbols needs a copy reloc. Set it up. */
6552
6553 #ifdef DEBUG
6554 fprintf (stderr, ", copy");
6555 #endif
6556
6557 BFD_ASSERT (h->dynindx != -1);
6558
6559 if (ppc_elf_hash_entry (h)->has_sda_refs)
6560 s = htab->relsbss;
6561 else
6562 s = htab->relbss;
6563 BFD_ASSERT (s != NULL);
6564
6565 rela.r_offset = (h->root.u.def.value
6566 + h->root.u.def.section->output_section->vma
6567 + h->root.u.def.section->output_offset);
6568 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_COPY);
6569 rela.r_addend = 0;
6570 loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
6571 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
6572 }
6573
6574 #ifdef DEBUG
6575 fprintf (stderr, "\n");
6576 #endif
6577
6578 /* Mark some specially defined symbols as absolute. */
6579 if (h == htab->elf.hgot
6580 || strcmp (h->root.root.string, "_DYNAMIC") == 0
6581 || strcmp (h->root.root.string, "_PROCEDURE_LINKAGE_TABLE_") == 0)
6582 sym->st_shndx = SHN_ABS;
6583
6584 return TRUE;
6585 }
6586 \f
6587 static enum elf_reloc_type_class
6588 ppc_elf_reloc_type_class (const Elf_Internal_Rela *rela)
6589 {
6590 switch (ELF32_R_TYPE (rela->r_info))
6591 {
6592 case R_PPC_RELATIVE:
6593 return reloc_class_relative;
6594 case R_PPC_REL24:
6595 case R_PPC_ADDR24:
6596 case R_PPC_JMP_SLOT:
6597 return reloc_class_plt;
6598 case R_PPC_COPY:
6599 return reloc_class_copy;
6600 default:
6601 return reloc_class_normal;
6602 }
6603 }
6604 \f
6605 /* Finish up the dynamic sections. */
6606
6607 static bfd_boolean
6608 ppc_elf_finish_dynamic_sections (bfd *output_bfd,
6609 struct bfd_link_info *info)
6610 {
6611 asection *sdyn;
6612 struct ppc_elf_link_hash_table *htab;
6613 bfd_vma got;
6614
6615 #ifdef DEBUG
6616 fprintf (stderr, "ppc_elf_finish_dynamic_sections called\n");
6617 #endif
6618
6619 htab = ppc_elf_hash_table (info);
6620 sdyn = bfd_get_section_by_name (htab->elf.dynobj, ".dynamic");
6621
6622 got = 0;
6623 if (htab->elf.hgot != NULL)
6624 got = (htab->elf.hgot->root.u.def.value
6625 + htab->elf.hgot->root.u.def.section->output_section->vma
6626 + htab->elf.hgot->root.u.def.section->output_offset);
6627
6628 if (htab->elf.dynamic_sections_created)
6629 {
6630 Elf32_External_Dyn *dyncon, *dynconend;
6631
6632 BFD_ASSERT (htab->plt != NULL && sdyn != NULL);
6633
6634 dyncon = (Elf32_External_Dyn *) sdyn->contents;
6635 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
6636 for (; dyncon < dynconend; dyncon++)
6637 {
6638 Elf_Internal_Dyn dyn;
6639 asection *s;
6640
6641 bfd_elf32_swap_dyn_in (htab->elf.dynobj, dyncon, &dyn);
6642
6643 switch (dyn.d_tag)
6644 {
6645 case DT_PLTGOT:
6646 s = htab->plt;
6647 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
6648 break;
6649
6650 case DT_PLTRELSZ:
6651 dyn.d_un.d_val = htab->relplt->size;
6652 break;
6653
6654 case DT_JMPREL:
6655 s = htab->relplt;
6656 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
6657 break;
6658
6659 case DT_PPC_GOT:
6660 dyn.d_un.d_ptr = got;
6661 break;
6662
6663 default:
6664 continue;
6665 }
6666
6667 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
6668 }
6669 }
6670
6671 /* Add a blrl instruction at _GLOBAL_OFFSET_TABLE_-4 so that a function can
6672 easily find the address of the _GLOBAL_OFFSET_TABLE_. */
6673 if (htab->got != NULL)
6674 {
6675 unsigned char *p = htab->got->contents;
6676 bfd_vma val;
6677
6678 p += elf_hash_table (info)->hgot->root.u.def.value;
6679 if (htab->old_plt)
6680 bfd_put_32 (output_bfd, 0x4e800021 /* blrl */, p - 4);
6681
6682 val = 0;
6683 if (sdyn != NULL)
6684 val = sdyn->output_section->vma + sdyn->output_offset;
6685 bfd_put_32 (output_bfd, val, p);
6686
6687 elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 4;
6688 }
6689
6690 if (htab->glink != NULL && htab->glink->contents != NULL)
6691 {
6692 unsigned char *p;
6693 unsigned char *endp;
6694 bfd_vma res0;
6695 unsigned int i;
6696
6697 /*
6698 * PIC glink code is the following:
6699 *
6700 * # ith PLT code stub.
6701 * addis 11,30,(plt+(i-1)*4-got)@ha
6702 * lwz 11,(plt+(i-1)*4-got)@l(11)
6703 * mtctr 11
6704 * bctr
6705 *
6706 * # A table of branches, one for each plt entry.
6707 * # The idea is that the plt call stub loads ctr (and r11) with these
6708 * # addresses, so (r11 - res_0) gives the plt index * 4.
6709 * res_0: b PLTresolve
6710 * res_1: b PLTresolve
6711 * .
6712 * # Some number of entries towards the end can be nops
6713 * res_n_m3: nop
6714 * res_n_m2: nop
6715 * res_n_m1:
6716 *
6717 * PLTresolve:
6718 * addis 11,11,(1f-res_0)@ha
6719 * mflr 0
6720 * bcl 20,31,1f
6721 * 1: addi 11,11,(1b-res_0)@l
6722 * mflr 12
6723 * mtlr 0
6724 * sub 11,11,12 # r11 = index * 4
6725 * addis 12,12,(got+4-1b)@ha
6726 * lwz 0,(got+4-1b)@l(12) # got[1] address of dl_runtime_resolve
6727 * lwz 12,(got+8-1b)@l(12) # got[2] contains the map address
6728 * mtctr 0
6729 * add 0,11,11
6730 * add 11,0,11 # r11 = index * 12 = reloc offset.
6731 * bctr
6732 */
6733 static const unsigned int pic_plt_resolve[] =
6734 {
6735 ADDIS_11_11,
6736 MFLR_0,
6737 BCL_20_31,
6738 ADDI_11_11,
6739 MFLR_12,
6740 MTLR_0,
6741 SUB_11_11_12,
6742 ADDIS_12_12,
6743 LWZ_0_12,
6744 LWZ_12_12,
6745 MTCTR_0,
6746 ADD_0_11_11,
6747 ADD_11_0_11,
6748 BCTR,
6749 NOP,
6750 NOP
6751 };
6752
6753 static const unsigned int plt_resolve[] =
6754 {
6755 LIS_12,
6756 ADDIS_11_11,
6757 LWZ_0_12,
6758 ADDI_11_11,
6759 MTCTR_0,
6760 ADD_0_11_11,
6761 LWZ_12_12,
6762 ADD_11_0_11,
6763 BCTR,
6764 NOP,
6765 NOP,
6766 NOP,
6767 NOP,
6768 NOP,
6769 NOP,
6770 NOP
6771 };
6772
6773 if (ARRAY_SIZE (pic_plt_resolve) != GLINK_PLTRESOLVE / 4)
6774 abort ();
6775 if (ARRAY_SIZE (plt_resolve) != GLINK_PLTRESOLVE / 4)
6776 abort ();
6777
6778 /* Build the branch table, one for each plt entry (less one),
6779 and perhaps some padding. */
6780 p = htab->glink->contents;
6781 p += htab->glink_pltresolve;
6782 endp = htab->glink->contents;
6783 endp += htab->glink->size - GLINK_PLTRESOLVE;
6784 while (p < endp - 8 * 4)
6785 {
6786 bfd_put_32 (output_bfd, B + endp - p, p);
6787 p += 4;
6788 }
6789 while (p < endp)
6790 {
6791 bfd_put_32 (output_bfd, NOP, p);
6792 p += 4;
6793 }
6794
6795 res0 = (htab->glink_pltresolve
6796 + htab->glink->output_section->vma
6797 + htab->glink->output_offset);
6798
6799 /* Last comes the PLTresolve stub. */
6800 if (info->shared || info->pie)
6801 {
6802 bfd_vma bcl;
6803
6804 for (i = 0; i < ARRAY_SIZE (pic_plt_resolve); i++)
6805 {
6806 bfd_put_32 (output_bfd, pic_plt_resolve[i], p);
6807 p += 4;
6808 }
6809 p -= 4 * ARRAY_SIZE (pic_plt_resolve);
6810
6811 bcl = (htab->glink->size - GLINK_PLTRESOLVE + 3*4
6812 + htab->glink->output_section->vma
6813 + htab->glink->output_offset);
6814
6815 bfd_put_32 (output_bfd,
6816 ADDIS_11_11 + PPC_HA (bcl - res0), p + 0*4);
6817 bfd_put_32 (output_bfd,
6818 ADDI_11_11 + PPC_LO (bcl - res0), p + 3*4);
6819 bfd_put_32 (output_bfd,
6820 ADDIS_12_12 + PPC_HA (got + 4 - bcl), p + 7*4);
6821 if (PPC_HA (got + 4 - bcl) == PPC_HA (got + 8 - bcl))
6822 {
6823 bfd_put_32 (output_bfd,
6824 LWZ_0_12 + PPC_LO (got + 4 - bcl), p + 8*4);
6825 bfd_put_32 (output_bfd,
6826 LWZ_12_12 + PPC_LO (got + 8 - bcl), p + 9*4);
6827 }
6828 else
6829 {
6830 bfd_put_32 (output_bfd,
6831 LWZU_0_12 + PPC_LO (got + 4 - bcl), p + 8*4);
6832 bfd_put_32 (output_bfd,
6833 LWZ_12_12 + 4, p + 9*4);
6834 }
6835 }
6836 else
6837 {
6838 for (i = 0; i < ARRAY_SIZE (plt_resolve); i++)
6839 {
6840 bfd_put_32 (output_bfd, plt_resolve[i], p);
6841 p += 4;
6842 }
6843 p -= 4 * ARRAY_SIZE (plt_resolve);
6844
6845 bfd_put_32 (output_bfd,
6846 LIS_12 + PPC_HA (got + 4), p + 0*4);
6847 bfd_put_32 (output_bfd,
6848 ADDIS_11_11 + PPC_HA (-res0), p + 1*4);
6849 bfd_put_32 (output_bfd,
6850 ADDI_11_11 + PPC_LO (-res0), p + 3*4);
6851 if (PPC_HA (got + 4) == PPC_HA (got + 8))
6852 {
6853 bfd_put_32 (output_bfd,
6854 LWZ_0_12 + PPC_LO (got + 4), p + 2*4);
6855 bfd_put_32 (output_bfd,
6856 LWZ_12_12 + PPC_LO (got + 8), p + 6*4);
6857 }
6858 else
6859 {
6860 bfd_put_32 (output_bfd,
6861 LWZU_0_12 + PPC_LO (got + 4), p + 2*4);
6862 bfd_put_32 (output_bfd,
6863 LWZ_12_12 + 4, p + 6*4);
6864 }
6865 }
6866 }
6867
6868 return TRUE;
6869 }
6870 \f
6871 #define TARGET_LITTLE_SYM bfd_elf32_powerpcle_vec
6872 #define TARGET_LITTLE_NAME "elf32-powerpcle"
6873 #define TARGET_BIG_SYM bfd_elf32_powerpc_vec
6874 #define TARGET_BIG_NAME "elf32-powerpc"
6875 #define ELF_ARCH bfd_arch_powerpc
6876 #define ELF_MACHINE_CODE EM_PPC
6877 #ifdef __QNXTARGET__
6878 #define ELF_MAXPAGESIZE 0x1000
6879 #else
6880 #define ELF_MAXPAGESIZE 0x10000
6881 #endif
6882 #define ELF_MINPAGESIZE 0x1000
6883 #define elf_info_to_howto ppc_elf_info_to_howto
6884
6885 #ifdef EM_CYGNUS_POWERPC
6886 #define ELF_MACHINE_ALT1 EM_CYGNUS_POWERPC
6887 #endif
6888
6889 #ifdef EM_PPC_OLD
6890 #define ELF_MACHINE_ALT2 EM_PPC_OLD
6891 #endif
6892
6893 #define elf_backend_plt_not_loaded 1
6894 #define elf_backend_can_gc_sections 1
6895 #define elf_backend_can_refcount 1
6896 #define elf_backend_rela_normal 1
6897
6898 #define bfd_elf32_mkobject ppc_elf_mkobject
6899 #define bfd_elf32_bfd_merge_private_bfd_data ppc_elf_merge_private_bfd_data
6900 #define bfd_elf32_bfd_relax_section ppc_elf_relax_section
6901 #define bfd_elf32_bfd_reloc_type_lookup ppc_elf_reloc_type_lookup
6902 #define bfd_elf32_bfd_set_private_flags ppc_elf_set_private_flags
6903 #define bfd_elf32_bfd_link_hash_table_create ppc_elf_link_hash_table_create
6904
6905 #define elf_backend_object_p ppc_elf_object_p
6906 #define elf_backend_gc_mark_hook ppc_elf_gc_mark_hook
6907 #define elf_backend_gc_sweep_hook ppc_elf_gc_sweep_hook
6908 #define elf_backend_section_from_shdr ppc_elf_section_from_shdr
6909 #define elf_backend_relocate_section ppc_elf_relocate_section
6910 #define elf_backend_create_dynamic_sections ppc_elf_create_dynamic_sections
6911 #define elf_backend_check_relocs ppc_elf_check_relocs
6912 #define elf_backend_copy_indirect_symbol ppc_elf_copy_indirect_symbol
6913 #define elf_backend_adjust_dynamic_symbol ppc_elf_adjust_dynamic_symbol
6914 #define elf_backend_add_symbol_hook ppc_elf_add_symbol_hook
6915 #define elf_backend_size_dynamic_sections ppc_elf_size_dynamic_sections
6916 #define elf_backend_finish_dynamic_symbol ppc_elf_finish_dynamic_symbol
6917 #define elf_backend_finish_dynamic_sections ppc_elf_finish_dynamic_sections
6918 #define elf_backend_fake_sections ppc_elf_fake_sections
6919 #define elf_backend_additional_program_headers ppc_elf_additional_program_headers
6920 #define elf_backend_grok_prstatus ppc_elf_grok_prstatus
6921 #define elf_backend_grok_psinfo ppc_elf_grok_psinfo
6922 #define elf_backend_reloc_type_class ppc_elf_reloc_type_class
6923 #define elf_backend_begin_write_processing ppc_elf_begin_write_processing
6924 #define elf_backend_final_write_processing ppc_elf_final_write_processing
6925 #define elf_backend_write_section ppc_elf_write_section
6926 #define elf_backend_special_sections ppc_elf_special_sections
6927 #define elf_backend_plt_sym_val ppc_elf_plt_sym_val
6928
6929 #include "elf32-target.h"
GDB Binutils - Deliverables
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