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* elf32-ppc.c (ppc_elf_adjust_dynamic_symbol): Ignore dynamic
[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 {
2913 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
2914 while (h->root.type == bfd_link_hash_indirect
2915 || h->root.type == bfd_link_hash_warning)
2916 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2917 }
2918
2919 /* If a relocation refers to _GLOBAL_OFFSET_TABLE_, create the .got.
2920 This shows up in particular in an R_PPC_ADDR32 in the eabi
2921 startup code. */
2922 if (h != NULL
2923 && htab->got == NULL
2924 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
2925 {
2926 if (htab->elf.dynobj == NULL)
2927 htab->elf.dynobj = abfd;
2928 if (!ppc_elf_create_got (htab->elf.dynobj, info))
2929 return FALSE;
2930 BFD_ASSERT (h == htab->elf.hgot);
2931 }
2932
2933 r_type = ELF32_R_TYPE (rel->r_info);
2934 switch (r_type)
2935 {
2936 case R_PPC_GOT_TLSLD16:
2937 case R_PPC_GOT_TLSLD16_LO:
2938 case R_PPC_GOT_TLSLD16_HI:
2939 case R_PPC_GOT_TLSLD16_HA:
2940 htab->tlsld_got.refcount += 1;
2941 tls_type = TLS_TLS | TLS_LD;
2942 goto dogottls;
2943
2944 case R_PPC_GOT_TLSGD16:
2945 case R_PPC_GOT_TLSGD16_LO:
2946 case R_PPC_GOT_TLSGD16_HI:
2947 case R_PPC_GOT_TLSGD16_HA:
2948 tls_type = TLS_TLS | TLS_GD;
2949 goto dogottls;
2950
2951 case R_PPC_GOT_TPREL16:
2952 case R_PPC_GOT_TPREL16_LO:
2953 case R_PPC_GOT_TPREL16_HI:
2954 case R_PPC_GOT_TPREL16_HA:
2955 if (info->shared)
2956 info->flags |= DF_STATIC_TLS;
2957 tls_type = TLS_TLS | TLS_TPREL;
2958 goto dogottls;
2959
2960 case R_PPC_GOT_DTPREL16:
2961 case R_PPC_GOT_DTPREL16_LO:
2962 case R_PPC_GOT_DTPREL16_HI:
2963 case R_PPC_GOT_DTPREL16_HA:
2964 tls_type = TLS_TLS | TLS_DTPREL;
2965 dogottls:
2966 sec->has_tls_reloc = 1;
2967 /* Fall thru */
2968
2969 /* GOT16 relocations */
2970 case R_PPC_GOT16:
2971 case R_PPC_GOT16_LO:
2972 case R_PPC_GOT16_HI:
2973 case R_PPC_GOT16_HA:
2974 /* This symbol requires a global offset table entry. */
2975 if (htab->got == NULL)
2976 {
2977 if (htab->elf.dynobj == NULL)
2978 htab->elf.dynobj = abfd;
2979 if (!ppc_elf_create_got (htab->elf.dynobj, info))
2980 return FALSE;
2981 }
2982 if (h != NULL)
2983 {
2984 h->got.refcount += 1;
2985 ppc_elf_hash_entry (h)->tls_mask |= tls_type;
2986 }
2987 else
2988 /* This is a global offset table entry for a local symbol. */
2989 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, tls_type))
2990 return FALSE;
2991 break;
2992
2993 /* Indirect .sdata relocation. */
2994 case R_PPC_EMB_SDAI16:
2995 if (info->shared)
2996 {
2997 bad_shared_reloc (abfd, r_type);
2998 return FALSE;
2999 }
3000 if (htab->sdata[0].section == NULL
3001 && !ppc_elf_create_linker_section (abfd, info, 0,
3002 &htab->sdata[0]))
3003 return FALSE;
3004 if (!elf_create_pointer_linker_section (abfd, &htab->sdata[0],
3005 h, rel))
3006 return FALSE;
3007 break;
3008
3009 /* Indirect .sdata2 relocation. */
3010 case R_PPC_EMB_SDA2I16:
3011 if (info->shared)
3012 {
3013 bad_shared_reloc (abfd, r_type);
3014 return FALSE;
3015 }
3016 if (htab->sdata[1].section == NULL
3017 && !ppc_elf_create_linker_section (abfd, info, SEC_READONLY,
3018 &htab->sdata[1]))
3019 return FALSE;
3020 if (!elf_create_pointer_linker_section (abfd, &htab->sdata[1],
3021 h, rel))
3022 return FALSE;
3023 break;
3024
3025 case R_PPC_SDAREL16:
3026 case R_PPC_EMB_SDA2REL:
3027 case R_PPC_EMB_SDA21:
3028 case R_PPC_EMB_RELSDA:
3029 case R_PPC_EMB_NADDR32:
3030 case R_PPC_EMB_NADDR16:
3031 case R_PPC_EMB_NADDR16_LO:
3032 case R_PPC_EMB_NADDR16_HI:
3033 case R_PPC_EMB_NADDR16_HA:
3034 if (info->shared)
3035 {
3036 bad_shared_reloc (abfd, r_type);
3037 return FALSE;
3038 }
3039 if (h != NULL)
3040 {
3041 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3042 /* We may need a copy reloc. */
3043 h->non_got_ref = TRUE;
3044 }
3045 break;
3046
3047 case R_PPC_PLT32:
3048 case R_PPC_PLTREL24:
3049 case R_PPC_PLTREL32:
3050 case R_PPC_PLT16_LO:
3051 case R_PPC_PLT16_HI:
3052 case R_PPC_PLT16_HA:
3053 #ifdef DEBUG
3054 fprintf (stderr, "Reloc requires a PLT entry\n");
3055 #endif
3056 /* This symbol requires a procedure linkage table entry. We
3057 actually build the entry in finish_dynamic_symbol,
3058 because this might be a case of linking PIC code without
3059 linking in any dynamic objects, in which case we don't
3060 need to generate a procedure linkage table after all. */
3061
3062 if (h == NULL)
3063 {
3064 /* It does not make sense to have a procedure linkage
3065 table entry for a local symbol. */
3066 (*_bfd_error_handler) (_("%B(%A+0x%lx): %s reloc against "
3067 "local symbol"),
3068 abfd,
3069 sec,
3070 (long) rel->r_offset,
3071 ppc_elf_howto_table[r_type]->name);
3072 bfd_set_error (bfd_error_bad_value);
3073 return FALSE;
3074 }
3075 else
3076 {
3077 bfd_vma addend = r_type == R_PPC_PLTREL24 ? rel->r_addend : 0;
3078
3079 h->needs_plt = 1;
3080 if (!update_plt_info (abfd, h, got2, addend))
3081 return FALSE;
3082 }
3083 break;
3084
3085 /* The following relocations don't need to propagate the
3086 relocation if linking a shared object since they are
3087 section relative. */
3088 case R_PPC_SECTOFF:
3089 case R_PPC_SECTOFF_LO:
3090 case R_PPC_SECTOFF_HI:
3091 case R_PPC_SECTOFF_HA:
3092 case R_PPC_DTPREL16:
3093 case R_PPC_DTPREL16_LO:
3094 case R_PPC_DTPREL16_HI:
3095 case R_PPC_DTPREL16_HA:
3096 case R_PPC_TOC16:
3097 break;
3098
3099 case R_PPC_REL16:
3100 case R_PPC_REL16_LO:
3101 case R_PPC_REL16_HI:
3102 case R_PPC_REL16_HA:
3103 htab->new_plt = 1;
3104 break;
3105
3106 /* These are just markers. */
3107 case R_PPC_TLS:
3108 case R_PPC_EMB_MRKREF:
3109 case R_PPC_NONE:
3110 case R_PPC_max:
3111 break;
3112
3113 /* These should only appear in dynamic objects. */
3114 case R_PPC_COPY:
3115 case R_PPC_GLOB_DAT:
3116 case R_PPC_JMP_SLOT:
3117 case R_PPC_RELATIVE:
3118 break;
3119
3120 /* These aren't handled yet. We'll report an error later. */
3121 case R_PPC_ADDR30:
3122 case R_PPC_EMB_RELSEC16:
3123 case R_PPC_EMB_RELST_LO:
3124 case R_PPC_EMB_RELST_HI:
3125 case R_PPC_EMB_RELST_HA:
3126 case R_PPC_EMB_BIT_FLD:
3127 break;
3128
3129 /* This refers only to functions defined in the shared library. */
3130 case R_PPC_LOCAL24PC:
3131 if (h && h == htab->elf.hgot)
3132 htab->old_plt = 1;
3133 break;
3134
3135 /* This relocation describes the C++ object vtable hierarchy.
3136 Reconstruct it for later use during GC. */
3137 case R_PPC_GNU_VTINHERIT:
3138 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
3139 return FALSE;
3140 break;
3141
3142 /* This relocation describes which C++ vtable entries are actually
3143 used. Record for later use during GC. */
3144 case R_PPC_GNU_VTENTRY:
3145 if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
3146 return FALSE;
3147 break;
3148
3149 /* We shouldn't really be seeing these. */
3150 case R_PPC_TPREL32:
3151 if (info->shared)
3152 info->flags |= DF_STATIC_TLS;
3153 goto dodyn;
3154
3155 /* Nor these. */
3156 case R_PPC_DTPMOD32:
3157 case R_PPC_DTPREL32:
3158 goto dodyn;
3159
3160 case R_PPC_TPREL16:
3161 case R_PPC_TPREL16_LO:
3162 case R_PPC_TPREL16_HI:
3163 case R_PPC_TPREL16_HA:
3164 if (info->shared)
3165 info->flags |= DF_STATIC_TLS;
3166 goto dodyn;
3167
3168 case R_PPC_REL32:
3169 if (h == NULL
3170 && got2 != NULL
3171 && (sec->flags & SEC_CODE) != 0
3172 && (info->shared || info->pie)
3173 && !htab->old_plt)
3174 {
3175 /* Old -fPIC gcc code has .long LCTOC1-LCFx just before
3176 the start of a function, which assembles to a REL32
3177 reference to .got2. If we detect one of these, then
3178 force the old PLT layout because the linker cannot
3179 reliably deduce the GOT pointer value needed for
3180 PLT call stubs. */
3181 asection *s;
3182
3183 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec, sec,
3184 r_symndx);
3185 if (s == got2)
3186 htab->old_plt = 1;
3187 }
3188 /* fall through */
3189
3190 case R_PPC_REL24:
3191 case R_PPC_REL14:
3192 case R_PPC_REL14_BRTAKEN:
3193 case R_PPC_REL14_BRNTAKEN:
3194 if (h == NULL)
3195 break;
3196 if (h == htab->elf.hgot)
3197 {
3198 htab->old_plt = 1;
3199 break;
3200 }
3201 /* fall through */
3202
3203 case R_PPC_ADDR32:
3204 case R_PPC_ADDR24:
3205 case R_PPC_ADDR16:
3206 case R_PPC_ADDR16_LO:
3207 case R_PPC_ADDR16_HI:
3208 case R_PPC_ADDR16_HA:
3209 case R_PPC_ADDR14:
3210 case R_PPC_ADDR14_BRTAKEN:
3211 case R_PPC_ADDR14_BRNTAKEN:
3212 case R_PPC_UADDR32:
3213 case R_PPC_UADDR16:
3214 if (h != NULL && !info->shared)
3215 {
3216 /* We may need a plt entry if the symbol turns out to be
3217 a function defined in a dynamic object. */
3218 if (!update_plt_info (abfd, h, NULL, 0))
3219 return FALSE;
3220
3221 /* We may need a copy reloc too. */
3222 h->non_got_ref = 1;
3223 }
3224
3225 dodyn:
3226 /* If we are creating a shared library, and this is a reloc
3227 against a global symbol, or a non PC relative reloc
3228 against a local symbol, then we need to copy the reloc
3229 into the shared library. However, if we are linking with
3230 -Bsymbolic, we do not need to copy a reloc against a
3231 global symbol which is defined in an object we are
3232 including in the link (i.e., DEF_REGULAR is set). At
3233 this point we have not seen all the input files, so it is
3234 possible that DEF_REGULAR is not set now but will be set
3235 later (it is never cleared). In case of a weak definition,
3236 DEF_REGULAR may be cleared later by a strong definition in
3237 a shared library. We account for that possibility below by
3238 storing information in the dyn_relocs field of the hash
3239 table entry. A similar situation occurs when creating
3240 shared libraries and symbol visibility changes render the
3241 symbol local.
3242
3243 If on the other hand, we are creating an executable, we
3244 may need to keep relocations for symbols satisfied by a
3245 dynamic library if we manage to avoid copy relocs for the
3246 symbol. */
3247 if ((info->shared
3248 && (MUST_BE_DYN_RELOC (r_type)
3249 || (h != NULL
3250 && (! info->symbolic
3251 || h->root.type == bfd_link_hash_defweak
3252 || !h->def_regular))))
3253 || (ELIMINATE_COPY_RELOCS
3254 && !info->shared
3255 && h != NULL
3256 && (h->root.type == bfd_link_hash_defweak
3257 || !h->def_regular)))
3258 {
3259 struct ppc_elf_dyn_relocs *p;
3260 struct ppc_elf_dyn_relocs **head;
3261
3262 #ifdef DEBUG
3263 fprintf (stderr,
3264 "ppc_elf_check_relocs needs to "
3265 "create relocation for %s\n",
3266 (h && h->root.root.string
3267 ? h->root.root.string : "<unknown>"));
3268 #endif
3269 if (sreloc == NULL)
3270 {
3271 const char *name;
3272
3273 name = (bfd_elf_string_from_elf_section
3274 (abfd,
3275 elf_elfheader (abfd)->e_shstrndx,
3276 elf_section_data (sec)->rel_hdr.sh_name));
3277 if (name == NULL)
3278 return FALSE;
3279
3280 BFD_ASSERT (strncmp (name, ".rela", 5) == 0
3281 && strcmp (bfd_get_section_name (abfd, sec),
3282 name + 5) == 0);
3283
3284 if (htab->elf.dynobj == NULL)
3285 htab->elf.dynobj = abfd;
3286 sreloc = bfd_get_section_by_name (htab->elf.dynobj, name);
3287 if (sreloc == NULL)
3288 {
3289 flagword flags;
3290
3291 flags = (SEC_HAS_CONTENTS | SEC_READONLY
3292 | SEC_IN_MEMORY | SEC_LINKER_CREATED
3293 | SEC_ALLOC | SEC_LOAD);
3294 sreloc = bfd_make_section_with_flags (htab->elf.dynobj,
3295 name,
3296 flags);
3297 if (sreloc == NULL
3298 || ! bfd_set_section_alignment (htab->elf.dynobj,
3299 sreloc, 2))
3300 return FALSE;
3301 }
3302 elf_section_data (sec)->sreloc = sreloc;
3303 }
3304
3305 /* If this is a global symbol, we count the number of
3306 relocations we need for this symbol. */
3307 if (h != NULL)
3308 {
3309 head = &ppc_elf_hash_entry (h)->dyn_relocs;
3310 }
3311 else
3312 {
3313 /* Track dynamic relocs needed for local syms too.
3314 We really need local syms available to do this
3315 easily. Oh well. */
3316
3317 asection *s;
3318 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec,
3319 sec, r_symndx);
3320 if (s == NULL)
3321 return FALSE;
3322
3323 head = ((struct ppc_elf_dyn_relocs **)
3324 &elf_section_data (s)->local_dynrel);
3325 }
3326
3327 p = *head;
3328 if (p == NULL || p->sec != sec)
3329 {
3330 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
3331 if (p == NULL)
3332 return FALSE;
3333 p->next = *head;
3334 *head = p;
3335 p->sec = sec;
3336 p->count = 0;
3337 p->pc_count = 0;
3338 }
3339
3340 p->count += 1;
3341 if (!MUST_BE_DYN_RELOC (r_type))
3342 p->pc_count += 1;
3343 }
3344
3345 break;
3346 }
3347 }
3348
3349 return TRUE;
3350 }
3351 \f
3352 /* Merge backend specific data from an object file to the output
3353 object file when linking. */
3354
3355 static bfd_boolean
3356 ppc_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
3357 {
3358 flagword old_flags;
3359 flagword new_flags;
3360 bfd_boolean error;
3361
3362 if (!is_ppc_elf_target (ibfd->xvec)
3363 || !is_ppc_elf_target (obfd->xvec))
3364 return TRUE;
3365
3366 /* Check if we have the same endianess. */
3367 if (! _bfd_generic_verify_endian_match (ibfd, obfd))
3368 return FALSE;
3369
3370 new_flags = elf_elfheader (ibfd)->e_flags;
3371 old_flags = elf_elfheader (obfd)->e_flags;
3372 if (!elf_flags_init (obfd))
3373 {
3374 /* First call, no flags set. */
3375 elf_flags_init (obfd) = TRUE;
3376 elf_elfheader (obfd)->e_flags = new_flags;
3377 }
3378
3379 /* Compatible flags are ok. */
3380 else if (new_flags == old_flags)
3381 ;
3382
3383 /* Incompatible flags. */
3384 else
3385 {
3386 /* Warn about -mrelocatable mismatch. Allow -mrelocatable-lib
3387 to be linked with either. */
3388 error = FALSE;
3389 if ((new_flags & EF_PPC_RELOCATABLE) != 0
3390 && (old_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0)
3391 {
3392 error = TRUE;
3393 (*_bfd_error_handler)
3394 (_("%B: compiled with -mrelocatable and linked with "
3395 "modules compiled normally"), ibfd);
3396 }
3397 else if ((new_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0
3398 && (old_flags & EF_PPC_RELOCATABLE) != 0)
3399 {
3400 error = TRUE;
3401 (*_bfd_error_handler)
3402 (_("%B: compiled normally and linked with "
3403 "modules compiled with -mrelocatable"), ibfd);
3404 }
3405
3406 /* The output is -mrelocatable-lib iff both the input files are. */
3407 if (! (new_flags & EF_PPC_RELOCATABLE_LIB))
3408 elf_elfheader (obfd)->e_flags &= ~EF_PPC_RELOCATABLE_LIB;
3409
3410 /* The output is -mrelocatable iff it can't be -mrelocatable-lib,
3411 but each input file is either -mrelocatable or -mrelocatable-lib. */
3412 if (! (elf_elfheader (obfd)->e_flags & EF_PPC_RELOCATABLE_LIB)
3413 && (new_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE))
3414 && (old_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE)))
3415 elf_elfheader (obfd)->e_flags |= EF_PPC_RELOCATABLE;
3416
3417 /* Do not warn about eabi vs. V.4 mismatch, just or in the bit if
3418 any module uses it. */
3419 elf_elfheader (obfd)->e_flags |= (new_flags & EF_PPC_EMB);
3420
3421 new_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
3422 old_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
3423
3424 /* Warn about any other mismatches. */
3425 if (new_flags != old_flags)
3426 {
3427 error = TRUE;
3428 (*_bfd_error_handler)
3429 (_("%B: uses different e_flags (0x%lx) fields "
3430 "than previous modules (0x%lx)"),
3431 ibfd, (long) new_flags, (long) old_flags);
3432 }
3433
3434 if (error)
3435 {
3436 bfd_set_error (bfd_error_bad_value);
3437 return FALSE;
3438 }
3439 }
3440
3441 return TRUE;
3442 }
3443 \f
3444 /* Choose which PLT scheme to use, and set .plt flags appropriately.
3445 Returns -1 on error, 0 for old PLT, 1 for new PLT. */
3446 int
3447 ppc_elf_select_plt_layout (bfd *output_bfd ATTRIBUTE_UNUSED,
3448 struct bfd_link_info *info,
3449 int force_old_plt)
3450 {
3451 struct ppc_elf_link_hash_table *htab;
3452
3453 htab = ppc_elf_hash_table (info);
3454 if (force_old_plt || !htab->new_plt)
3455 htab->old_plt = 1;
3456
3457 if (!htab->old_plt)
3458 {
3459 flagword flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
3460 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3461
3462 /* The new PLT is a loaded section. */
3463 if (htab->plt != NULL
3464 && !bfd_set_section_flags (htab->elf.dynobj, htab->plt, flags))
3465 return -1;
3466
3467 /* The new GOT is not executable. */
3468 if (htab->got != NULL
3469 && !bfd_set_section_flags (htab->elf.dynobj, htab->got, flags))
3470 return -1;
3471 }
3472 else
3473 {
3474 /* Stop an unused .glink section from affecting .text alignment. */
3475 if (htab->glink != NULL
3476 && !bfd_set_section_alignment (htab->elf.dynobj, htab->glink, 0))
3477 return -1;
3478 }
3479 return !htab->old_plt;
3480 }
3481 \f
3482 /* Return the section that should be marked against GC for a given
3483 relocation. */
3484
3485 static asection *
3486 ppc_elf_gc_mark_hook (asection *sec,
3487 struct bfd_link_info *info ATTRIBUTE_UNUSED,
3488 Elf_Internal_Rela *rel,
3489 struct elf_link_hash_entry *h,
3490 Elf_Internal_Sym *sym)
3491 {
3492 if (h != NULL)
3493 {
3494 switch (ELF32_R_TYPE (rel->r_info))
3495 {
3496 case R_PPC_GNU_VTINHERIT:
3497 case R_PPC_GNU_VTENTRY:
3498 break;
3499
3500 default:
3501 switch (h->root.type)
3502 {
3503 case bfd_link_hash_defined:
3504 case bfd_link_hash_defweak:
3505 return h->root.u.def.section;
3506
3507 case bfd_link_hash_common:
3508 return h->root.u.c.p->section;
3509
3510 default:
3511 break;
3512 }
3513 }
3514 }
3515 else
3516 return bfd_section_from_elf_index (sec->owner, sym->st_shndx);
3517
3518 return NULL;
3519 }
3520
3521 /* Update the got, plt and dynamic reloc reference counts for the
3522 section being removed. */
3523
3524 static bfd_boolean
3525 ppc_elf_gc_sweep_hook (bfd *abfd,
3526 struct bfd_link_info *info,
3527 asection *sec,
3528 const Elf_Internal_Rela *relocs)
3529 {
3530 struct ppc_elf_link_hash_table *htab;
3531 Elf_Internal_Shdr *symtab_hdr;
3532 struct elf_link_hash_entry **sym_hashes;
3533 bfd_signed_vma *local_got_refcounts;
3534 const Elf_Internal_Rela *rel, *relend;
3535 asection *got2;
3536
3537 if ((sec->flags & SEC_ALLOC) == 0)
3538 return TRUE;
3539
3540 elf_section_data (sec)->local_dynrel = NULL;
3541
3542 htab = ppc_elf_hash_table (info);
3543 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
3544 sym_hashes = elf_sym_hashes (abfd);
3545 local_got_refcounts = elf_local_got_refcounts (abfd);
3546 got2 = bfd_get_section_by_name (abfd, ".got2");
3547
3548 relend = relocs + sec->reloc_count;
3549 for (rel = relocs; rel < relend; rel++)
3550 {
3551 unsigned long r_symndx;
3552 enum elf_ppc_reloc_type r_type;
3553 struct elf_link_hash_entry *h = NULL;
3554
3555 r_symndx = ELF32_R_SYM (rel->r_info);
3556 if (r_symndx >= symtab_hdr->sh_info)
3557 {
3558 struct ppc_elf_dyn_relocs **pp, *p;
3559 struct ppc_elf_link_hash_entry *eh;
3560
3561 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3562 while (h->root.type == bfd_link_hash_indirect
3563 || h->root.type == bfd_link_hash_warning)
3564 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3565 eh = (struct ppc_elf_link_hash_entry *) h;
3566
3567 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
3568 if (p->sec == sec)
3569 {
3570 /* Everything must go for SEC. */
3571 *pp = p->next;
3572 break;
3573 }
3574 }
3575
3576 r_type = ELF32_R_TYPE (rel->r_info);
3577 switch (r_type)
3578 {
3579 case R_PPC_GOT_TLSLD16:
3580 case R_PPC_GOT_TLSLD16_LO:
3581 case R_PPC_GOT_TLSLD16_HI:
3582 case R_PPC_GOT_TLSLD16_HA:
3583 htab->tlsld_got.refcount -= 1;
3584 /* Fall thru */
3585
3586 case R_PPC_GOT_TLSGD16:
3587 case R_PPC_GOT_TLSGD16_LO:
3588 case R_PPC_GOT_TLSGD16_HI:
3589 case R_PPC_GOT_TLSGD16_HA:
3590 case R_PPC_GOT_TPREL16:
3591 case R_PPC_GOT_TPREL16_LO:
3592 case R_PPC_GOT_TPREL16_HI:
3593 case R_PPC_GOT_TPREL16_HA:
3594 case R_PPC_GOT_DTPREL16:
3595 case R_PPC_GOT_DTPREL16_LO:
3596 case R_PPC_GOT_DTPREL16_HI:
3597 case R_PPC_GOT_DTPREL16_HA:
3598 case R_PPC_GOT16:
3599 case R_PPC_GOT16_LO:
3600 case R_PPC_GOT16_HI:
3601 case R_PPC_GOT16_HA:
3602 if (h != NULL)
3603 {
3604 if (h->got.refcount > 0)
3605 h->got.refcount--;
3606 }
3607 else if (local_got_refcounts != NULL)
3608 {
3609 if (local_got_refcounts[r_symndx] > 0)
3610 local_got_refcounts[r_symndx]--;
3611 }
3612 break;
3613
3614 case R_PPC_REL24:
3615 case R_PPC_REL14:
3616 case R_PPC_REL14_BRTAKEN:
3617 case R_PPC_REL14_BRNTAKEN:
3618 case R_PPC_REL32:
3619 if (h == NULL || h == htab->elf.hgot)
3620 break;
3621 /* Fall thru */
3622
3623 case R_PPC_ADDR32:
3624 case R_PPC_ADDR24:
3625 case R_PPC_ADDR16:
3626 case R_PPC_ADDR16_LO:
3627 case R_PPC_ADDR16_HI:
3628 case R_PPC_ADDR16_HA:
3629 case R_PPC_ADDR14:
3630 case R_PPC_ADDR14_BRTAKEN:
3631 case R_PPC_ADDR14_BRNTAKEN:
3632 case R_PPC_UADDR32:
3633 case R_PPC_UADDR16:
3634 case R_PPC_PLT32:
3635 case R_PPC_PLTREL24:
3636 case R_PPC_PLT16_LO:
3637 case R_PPC_PLT16_HI:
3638 case R_PPC_PLT16_HA:
3639 if (h != NULL)
3640 {
3641 bfd_vma addend = r_type == R_PPC_PLTREL24 ? rel->r_addend : 0;
3642 struct plt_entry *ent = find_plt_ent (h, got2, addend);
3643 if (ent->plt.refcount > 0)
3644 ent->plt.refcount -= 1;
3645 }
3646 break;
3647
3648 default:
3649 break;
3650 }
3651 }
3652 return TRUE;
3653 }
3654 \f
3655 /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */
3656
3657 asection *
3658 ppc_elf_tls_setup (bfd *obfd, struct bfd_link_info *info)
3659 {
3660 struct ppc_elf_link_hash_table *htab;
3661
3662 htab = ppc_elf_hash_table (info);
3663 if (!htab->old_plt
3664 && htab->plt != NULL
3665 && htab->plt->output_section != NULL)
3666 {
3667 elf_section_type (htab->plt->output_section) = SHT_PROGBITS;
3668 elf_section_flags (htab->plt->output_section) = SHF_ALLOC + SHF_WRITE;
3669 }
3670
3671 htab->tls_get_addr = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
3672 FALSE, FALSE, TRUE);
3673 return _bfd_elf_tls_setup (obfd, info);
3674 }
3675
3676 /* Run through all the TLS relocs looking for optimization
3677 opportunities. */
3678
3679 bfd_boolean
3680 ppc_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED,
3681 struct bfd_link_info *info)
3682 {
3683 bfd *ibfd;
3684 asection *sec;
3685 struct ppc_elf_link_hash_table *htab;
3686
3687 if (info->relocatable || info->shared)
3688 return TRUE;
3689
3690 htab = ppc_elf_hash_table (info);
3691 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
3692 {
3693 Elf_Internal_Sym *locsyms = NULL;
3694 Elf_Internal_Shdr *symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
3695
3696 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
3697 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
3698 {
3699 Elf_Internal_Rela *relstart, *rel, *relend;
3700 int expecting_tls_get_addr;
3701
3702 /* Read the relocations. */
3703 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
3704 info->keep_memory);
3705 if (relstart == NULL)
3706 return FALSE;
3707
3708 expecting_tls_get_addr = 0;
3709 relend = relstart + sec->reloc_count;
3710 for (rel = relstart; rel < relend; rel++)
3711 {
3712 enum elf_ppc_reloc_type r_type;
3713 unsigned long r_symndx;
3714 struct elf_link_hash_entry *h = NULL;
3715 char *tls_mask;
3716 char tls_set, tls_clear;
3717 bfd_boolean is_local;
3718
3719 r_symndx = ELF32_R_SYM (rel->r_info);
3720 if (r_symndx >= symtab_hdr->sh_info)
3721 {
3722 struct elf_link_hash_entry **sym_hashes;
3723
3724 sym_hashes = elf_sym_hashes (ibfd);
3725 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3726 while (h->root.type == bfd_link_hash_indirect
3727 || h->root.type == bfd_link_hash_warning)
3728 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3729 }
3730
3731 is_local = FALSE;
3732 if (h == NULL
3733 || !h->def_dynamic)
3734 is_local = TRUE;
3735
3736 r_type = ELF32_R_TYPE (rel->r_info);
3737 switch (r_type)
3738 {
3739 case R_PPC_GOT_TLSLD16:
3740 case R_PPC_GOT_TLSLD16_LO:
3741 case R_PPC_GOT_TLSLD16_HI:
3742 case R_PPC_GOT_TLSLD16_HA:
3743 /* These relocs should never be against a symbol
3744 defined in a shared lib. Leave them alone if
3745 that turns out to be the case. */
3746 expecting_tls_get_addr = 0;
3747 htab->tlsld_got.refcount -= 1;
3748 if (!is_local)
3749 continue;
3750
3751 /* LD -> LE */
3752 tls_set = 0;
3753 tls_clear = TLS_LD;
3754 expecting_tls_get_addr = 1;
3755 break;
3756
3757 case R_PPC_GOT_TLSGD16:
3758 case R_PPC_GOT_TLSGD16_LO:
3759 case R_PPC_GOT_TLSGD16_HI:
3760 case R_PPC_GOT_TLSGD16_HA:
3761 if (is_local)
3762 /* GD -> LE */
3763 tls_set = 0;
3764 else
3765 /* GD -> IE */
3766 tls_set = TLS_TLS | TLS_TPRELGD;
3767 tls_clear = TLS_GD;
3768 expecting_tls_get_addr = 1;
3769 break;
3770
3771 case R_PPC_GOT_TPREL16:
3772 case R_PPC_GOT_TPREL16_LO:
3773 case R_PPC_GOT_TPREL16_HI:
3774 case R_PPC_GOT_TPREL16_HA:
3775 expecting_tls_get_addr = 0;
3776 if (is_local)
3777 {
3778 /* IE -> LE */
3779 tls_set = 0;
3780 tls_clear = TLS_TPREL;
3781 break;
3782 }
3783 else
3784 continue;
3785
3786 case R_PPC_REL14:
3787 case R_PPC_REL14_BRTAKEN:
3788 case R_PPC_REL14_BRNTAKEN:
3789 case R_PPC_REL24:
3790 if (expecting_tls_get_addr
3791 && h != NULL
3792 && h == htab->tls_get_addr)
3793 {
3794 struct plt_entry *ent = find_plt_ent (h, NULL, 0);
3795 if (ent != NULL && ent->plt.refcount > 0)
3796 ent->plt.refcount -= 1;
3797 }
3798 expecting_tls_get_addr = 0;
3799 continue;
3800
3801 default:
3802 expecting_tls_get_addr = 0;
3803 continue;
3804 }
3805
3806 if (h != NULL)
3807 {
3808 if (tls_set == 0)
3809 {
3810 /* We managed to get rid of a got entry. */
3811 if (h->got.refcount > 0)
3812 h->got.refcount -= 1;
3813 }
3814 tls_mask = &ppc_elf_hash_entry (h)->tls_mask;
3815 }
3816 else
3817 {
3818 Elf_Internal_Sym *sym;
3819 bfd_signed_vma *lgot_refs;
3820 char *lgot_masks;
3821
3822 if (locsyms == NULL)
3823 {
3824 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
3825 if (locsyms == NULL)
3826 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
3827 symtab_hdr->sh_info,
3828 0, NULL, NULL, NULL);
3829 if (locsyms == NULL)
3830 {
3831 if (elf_section_data (sec)->relocs != relstart)
3832 free (relstart);
3833 return FALSE;
3834 }
3835 }
3836 sym = locsyms + r_symndx;
3837 lgot_refs = elf_local_got_refcounts (ibfd);
3838 if (lgot_refs == NULL)
3839 abort ();
3840 if (tls_set == 0)
3841 {
3842 /* We managed to get rid of a got entry. */
3843 if (lgot_refs[r_symndx] > 0)
3844 lgot_refs[r_symndx] -= 1;
3845 }
3846 lgot_masks = (char *) (lgot_refs + symtab_hdr->sh_info);
3847 tls_mask = &lgot_masks[r_symndx];
3848 }
3849
3850 *tls_mask |= tls_set;
3851 *tls_mask &= ~tls_clear;
3852 }
3853
3854 if (elf_section_data (sec)->relocs != relstart)
3855 free (relstart);
3856 }
3857
3858 if (locsyms != NULL
3859 && (symtab_hdr->contents != (unsigned char *) locsyms))
3860 {
3861 if (!info->keep_memory)
3862 free (locsyms);
3863 else
3864 symtab_hdr->contents = (unsigned char *) locsyms;
3865 }
3866 }
3867 return TRUE;
3868 }
3869 \f
3870 /* Adjust a symbol defined by a dynamic object and referenced by a
3871 regular object. The current definition is in some section of the
3872 dynamic object, but we're not including those sections. We have to
3873 change the definition to something the rest of the link can
3874 understand. */
3875
3876 static bfd_boolean
3877 ppc_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
3878 struct elf_link_hash_entry *h)
3879 {
3880 struct ppc_elf_link_hash_table *htab;
3881 asection *s;
3882 unsigned int power_of_two;
3883
3884 #ifdef DEBUG
3885 fprintf (stderr, "ppc_elf_adjust_dynamic_symbol called for %s\n",
3886 h->root.root.string);
3887 #endif
3888
3889 /* Make sure we know what is going on here. */
3890 htab = ppc_elf_hash_table (info);
3891 BFD_ASSERT (htab->elf.dynobj != NULL
3892 && (h->needs_plt
3893 || h->u.weakdef != NULL
3894 || (h->def_dynamic
3895 && h->ref_regular
3896 && !h->def_regular)));
3897
3898 /* Deal with function syms. */
3899 if (h->type == STT_FUNC
3900 || h->needs_plt)
3901 {
3902 /* Clear procedure linkage table information for any symbol that
3903 won't need a .plt entry. */
3904 struct plt_entry *ent;
3905 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
3906 if (ent->plt.refcount > 0)
3907 break;
3908 if (ent == NULL
3909 || SYMBOL_CALLS_LOCAL (info, h)
3910 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
3911 && h->root.type == bfd_link_hash_undefweak))
3912 {
3913 /* A PLT entry is not required/allowed when:
3914
3915 1. We are not using ld.so; because then the PLT entry
3916 can't be set up, so we can't use one. In this case,
3917 ppc_elf_adjust_dynamic_symbol won't even be called.
3918
3919 2. GC has rendered the entry unused.
3920
3921 3. We know for certain that a call to this symbol
3922 will go to this object, or will remain undefined. */
3923 h->plt.plist = NULL;
3924 h->needs_plt = 0;
3925 }
3926 return TRUE;
3927 }
3928 else
3929 h->plt.plist = NULL;
3930
3931 /* If this is a weak symbol, and there is a real definition, the
3932 processor independent code will have arranged for us to see the
3933 real definition first, and we can just use the same value. */
3934 if (h->u.weakdef != NULL)
3935 {
3936 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
3937 || h->u.weakdef->root.type == bfd_link_hash_defweak);
3938 h->root.u.def.section = h->u.weakdef->root.u.def.section;
3939 h->root.u.def.value = h->u.weakdef->root.u.def.value;
3940 if (ELIMINATE_COPY_RELOCS)
3941 h->non_got_ref = h->u.weakdef->non_got_ref;
3942 return TRUE;
3943 }
3944
3945 /* This is a reference to a symbol defined by a dynamic object which
3946 is not a function. */
3947
3948 /* First, a fudge for old shared libs that export some symbols they
3949 should not. */
3950 if (!h->def_regular
3951 && (strcmp (h->root.root.string, "_SDA_BASE_") == 0
3952 || strcmp (h->root.root.string, "_SDA2_BASE_") == 0))
3953 {
3954 /* These symbols will be defined later, as if they were defined in
3955 a linker script. We don't want to use a definition in a shared
3956 object. */
3957 const struct elf_backend_data *bed;
3958
3959 bed = get_elf_backend_data (htab->elf.dynobj);
3960 (*bed->elf_backend_hide_symbol) (info, h, TRUE);
3961 h->root.type = bfd_link_hash_undefined;
3962 h->root.u.undef.abfd = htab->elf.dynobj;
3963 return TRUE;
3964 }
3965
3966 /* If we are creating a shared library, we must presume that the
3967 only references to the symbol are via the global offset table.
3968 For such cases we need not do anything here; the relocations will
3969 be handled correctly by relocate_section. */
3970 if (info->shared)
3971 return TRUE;
3972
3973 /* If there are no references to this symbol that do not use the
3974 GOT, we don't need to generate a copy reloc. */
3975 if (!h->non_got_ref)
3976 return TRUE;
3977
3978 /* If we didn't find any dynamic relocs in read-only sections, then we'll
3979 be keeping the dynamic relocs and avoiding the copy reloc. We can't
3980 do this if there are any small data relocations. */
3981 if (ELIMINATE_COPY_RELOCS
3982 && !ppc_elf_hash_entry (h)->has_sda_refs)
3983 {
3984 struct ppc_elf_dyn_relocs *p;
3985 for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next)
3986 {
3987 s = p->sec->output_section;
3988 if (s != NULL && (s->flags & SEC_READONLY) != 0)
3989 break;
3990 }
3991
3992 if (p == NULL)
3993 {
3994 h->non_got_ref = 0;
3995 return TRUE;
3996 }
3997 }
3998
3999 /* We must allocate the symbol in our .dynbss section, which will
4000 become part of the .bss section of the executable. There will be
4001 an entry for this symbol in the .dynsym section. The dynamic
4002 object will contain position independent code, so all references
4003 from the dynamic object to this symbol will go through the global
4004 offset table. The dynamic linker will use the .dynsym entry to
4005 determine the address it must put in the global offset table, so
4006 both the dynamic object and the regular object will refer to the
4007 same memory location for the variable.
4008
4009 Of course, if the symbol is referenced using SDAREL relocs, we
4010 must instead allocate it in .sbss. */
4011
4012 if (ppc_elf_hash_entry (h)->has_sda_refs)
4013 s = htab->dynsbss;
4014 else
4015 s = htab->dynbss;
4016 BFD_ASSERT (s != NULL);
4017
4018 /* We must generate a R_PPC_COPY reloc to tell the dynamic linker to
4019 copy the initial value out of the dynamic object and into the
4020 runtime process image. We need to remember the offset into the
4021 .rela.bss section we are going to use. */
4022 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
4023 {
4024 asection *srel;
4025
4026 if (ppc_elf_hash_entry (h)->has_sda_refs)
4027 srel = htab->relsbss;
4028 else
4029 srel = htab->relbss;
4030 BFD_ASSERT (srel != NULL);
4031 srel->size += sizeof (Elf32_External_Rela);
4032 h->needs_copy = 1;
4033 }
4034
4035 /* We need to figure out the alignment required for this symbol. I
4036 have no idea how ELF linkers handle this. */
4037 power_of_two = bfd_log2 (h->size);
4038 if (power_of_two > 4)
4039 power_of_two = 4;
4040
4041 /* Apply the required alignment. */
4042 s->size = BFD_ALIGN (s->size, (bfd_size_type) (1 << power_of_two));
4043 if (power_of_two > bfd_get_section_alignment (htab->elf.dynobj, s))
4044 {
4045 if (! bfd_set_section_alignment (htab->elf.dynobj, s, power_of_two))
4046 return FALSE;
4047 }
4048
4049 /* Define the symbol as being at this point in the section. */
4050 h->root.u.def.section = s;
4051 h->root.u.def.value = s->size;
4052
4053 /* Increment the section size to make room for the symbol. */
4054 s->size += h->size;
4055
4056 return TRUE;
4057 }
4058 \f
4059 /* Allocate NEED contiguous space in .got, and return the offset.
4060 Handles allocation of the got header when crossing 32k. */
4061
4062 static bfd_vma
4063 allocate_got (struct ppc_elf_link_hash_table *htab, unsigned int need)
4064 {
4065 bfd_vma where;
4066 unsigned int max_before_header = 32768;
4067
4068 if (htab->old_plt)
4069 max_before_header = 32764;
4070
4071 if (need <= htab->got_gap)
4072 {
4073 where = max_before_header - htab->got_gap;
4074 htab->got_gap -= need;
4075 }
4076 else
4077 {
4078 if (htab->got->size + need > max_before_header
4079 && htab->got->size <= max_before_header)
4080 {
4081 htab->got_gap = max_before_header - htab->got->size;
4082 htab->got->size = max_before_header + htab->got_header_size;
4083 }
4084 where = htab->got->size;
4085 htab->got->size += need;
4086 }
4087 return where;
4088 }
4089
4090 /* Allocate space in associated reloc sections for dynamic relocs. */
4091
4092 static bfd_boolean
4093 allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
4094 {
4095 struct bfd_link_info *info = inf;
4096 struct ppc_elf_link_hash_entry *eh;
4097 struct ppc_elf_link_hash_table *htab;
4098 struct ppc_elf_dyn_relocs *p;
4099
4100 if (h->root.type == bfd_link_hash_indirect)
4101 return TRUE;
4102
4103 if (h->root.type == bfd_link_hash_warning)
4104 /* When warning symbols are created, they **replace** the "real"
4105 entry in the hash table, thus we never get to see the real
4106 symbol in a hash traversal. So look at it now. */
4107 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4108
4109 htab = ppc_elf_hash_table (info);
4110 if (htab->elf.dynamic_sections_created)
4111 {
4112 struct plt_entry *ent;
4113 bfd_boolean doneone = FALSE;
4114 bfd_vma plt_offset = 0, glink_offset = 0;
4115
4116 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
4117 if (ent->plt.refcount > 0)
4118 {
4119 /* Make sure this symbol is output as a dynamic symbol. */
4120 if (h->dynindx == -1
4121 && !h->forced_local)
4122 {
4123 if (! bfd_elf_link_record_dynamic_symbol (info, h))
4124 return FALSE;
4125 }
4126
4127 if (info->shared
4128 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
4129 {
4130 asection *s = htab->plt;
4131
4132 if (!htab->old_plt)
4133 {
4134 if (!doneone)
4135 {
4136 plt_offset = s->size;
4137 s->size += 4;
4138 }
4139 ent->plt.offset = plt_offset;
4140
4141 s = htab->glink;
4142 if (!doneone || info->shared || info->pie)
4143 {
4144 glink_offset = s->size;
4145 s->size += GLINK_ENTRY_SIZE;
4146 }
4147 if (!doneone
4148 && !info->shared
4149 && !h->def_regular)
4150 {
4151 h->root.u.def.section = s;
4152 h->root.u.def.value = glink_offset;
4153 }
4154 ent->glink_offset = glink_offset;
4155 }
4156 else
4157 {
4158 if (!doneone)
4159 {
4160 /* If this is the first .plt entry, make room
4161 for the special first entry. */
4162 if (s->size == 0)
4163 s->size += PLT_INITIAL_ENTRY_SIZE;
4164
4165 /* The PowerPC PLT is actually composed of two
4166 parts, the first part is 2 words (for a load
4167 and a jump), and then there is a remaining
4168 word available at the end. */
4169 plt_offset = (PLT_INITIAL_ENTRY_SIZE
4170 + (PLT_SLOT_SIZE
4171 * ((s->size - PLT_INITIAL_ENTRY_SIZE)
4172 / PLT_ENTRY_SIZE)));
4173
4174 /* If this symbol is not defined in a regular
4175 file, and we are not generating a shared
4176 library, then set the symbol to this location
4177 in the .plt. This is required to make
4178 function pointers compare as equal between
4179 the normal executable and the shared library. */
4180 if (! info->shared
4181 && !h->def_regular)
4182 {
4183 h->root.u.def.section = s;
4184 h->root.u.def.value = plt_offset;
4185 }
4186
4187 /* Make room for this entry. After the 8192nd
4188 entry, room for two entries is allocated. */
4189 s->size += PLT_ENTRY_SIZE;
4190 if ((s->size - PLT_INITIAL_ENTRY_SIZE) / PLT_ENTRY_SIZE
4191 > PLT_NUM_SINGLE_ENTRIES)
4192 s->size += PLT_ENTRY_SIZE;
4193 }
4194 ent->plt.offset = plt_offset;
4195 }
4196
4197 /* We also need to make an entry in the .rela.plt section. */
4198 if (!doneone)
4199 {
4200 htab->relplt->size += sizeof (Elf32_External_Rela);
4201 doneone = TRUE;
4202 }
4203 }
4204 else
4205 ent->plt.offset = (bfd_vma) -1;
4206
4207 if (!doneone)
4208 {
4209 h->plt.plist = NULL;
4210 h->needs_plt = 0;
4211 }
4212 }
4213 }
4214 else
4215 {
4216 h->plt.plist = NULL;
4217 h->needs_plt = 0;
4218 }
4219
4220 eh = (struct ppc_elf_link_hash_entry *) h;
4221 if (eh->elf.got.refcount > 0)
4222 {
4223 /* Make sure this symbol is output as a dynamic symbol. */
4224 if (eh->elf.dynindx == -1
4225 && !eh->elf.forced_local)
4226 {
4227 if (!bfd_elf_link_record_dynamic_symbol (info, &eh->elf))
4228 return FALSE;
4229 }
4230
4231 if (eh->tls_mask == (TLS_TLS | TLS_LD)
4232 && !eh->elf.def_dynamic)
4233 /* If just an LD reloc, we'll just use htab->tlsld_got.offset. */
4234 eh->elf.got.offset = (bfd_vma) -1;
4235 else
4236 {
4237 bfd_boolean dyn;
4238 unsigned int need = 0;
4239 if ((eh->tls_mask & TLS_TLS) != 0)
4240 {
4241 if ((eh->tls_mask & TLS_LD) != 0)
4242 need += 8;
4243 if ((eh->tls_mask & TLS_GD) != 0)
4244 need += 8;
4245 if ((eh->tls_mask & (TLS_TPREL | TLS_TPRELGD)) != 0)
4246 need += 4;
4247 if ((eh->tls_mask & TLS_DTPREL) != 0)
4248 need += 4;
4249 }
4250 else
4251 need += 4;
4252 eh->elf.got.offset = allocate_got (htab, need);
4253 dyn = htab->elf.dynamic_sections_created;
4254 if ((info->shared
4255 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, &eh->elf))
4256 && (ELF_ST_VISIBILITY (eh->elf.other) == STV_DEFAULT
4257 || eh->elf.root.type != bfd_link_hash_undefweak))
4258 {
4259 /* All the entries we allocated need relocs.
4260 Except LD only needs one. */
4261 if ((eh->tls_mask & TLS_LD) != 0)
4262 need -= 4;
4263 htab->relgot->size += need * (sizeof (Elf32_External_Rela) / 4);
4264 }
4265 }
4266 }
4267 else
4268 eh->elf.got.offset = (bfd_vma) -1;
4269
4270 if (eh->dyn_relocs == NULL)
4271 return TRUE;
4272
4273 /* In the shared -Bsymbolic case, discard space allocated for
4274 dynamic pc-relative relocs against symbols which turn out to be
4275 defined in regular objects. For the normal shared case, discard
4276 space for relocs that have become local due to symbol visibility
4277 changes. */
4278
4279 if (info->shared)
4280 {
4281 /* Relocs that use pc_count are those that appear on a call insn,
4282 or certain REL relocs (see MUST_BE_DYN_RELOC) that can be
4283 generated via assembly. We want calls to protected symbols to
4284 resolve directly to the function rather than going via the plt.
4285 If people want function pointer comparisons to work as expected
4286 then they should avoid writing weird assembly. */
4287 if (SYMBOL_CALLS_LOCAL (info, h))
4288 {
4289 struct ppc_elf_dyn_relocs **pp;
4290
4291 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
4292 {
4293 p->count -= p->pc_count;
4294 p->pc_count = 0;
4295 if (p->count == 0)
4296 *pp = p->next;
4297 else
4298 pp = &p->next;
4299 }
4300 }
4301
4302 /* Also discard relocs on undefined weak syms with non-default
4303 visibility. */
4304 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
4305 && h->root.type == bfd_link_hash_undefweak)
4306 eh->dyn_relocs = NULL;
4307
4308 /* Make sure undefined weak symbols are output as a dynamic symbol
4309 in PIEs. */
4310 if (info->pie
4311 && eh->dyn_relocs != NULL
4312 && h->dynindx == -1
4313 && h->root.type == bfd_link_hash_undefweak
4314 && !h->forced_local)
4315 {
4316 if (! bfd_elf_link_record_dynamic_symbol (info, h))
4317 return FALSE;
4318 }
4319 }
4320 else if (ELIMINATE_COPY_RELOCS)
4321 {
4322 /* For the non-shared case, discard space for relocs against
4323 symbols which turn out to need copy relocs or are not
4324 dynamic. */
4325
4326 if (!h->non_got_ref
4327 && h->def_dynamic
4328 && !h->def_regular)
4329 {
4330 /* Make sure this symbol is output as a dynamic symbol.
4331 Undefined weak syms won't yet be marked as dynamic. */
4332 if (h->dynindx == -1
4333 && !h->forced_local)
4334 {
4335 if (! bfd_elf_link_record_dynamic_symbol (info, h))
4336 return FALSE;
4337 }
4338
4339 /* If that succeeded, we know we'll be keeping all the
4340 relocs. */
4341 if (h->dynindx != -1)
4342 goto keep;
4343 }
4344
4345 eh->dyn_relocs = NULL;
4346
4347 keep: ;
4348 }
4349
4350 /* Finally, allocate space. */
4351 for (p = eh->dyn_relocs; p != NULL; p = p->next)
4352 {
4353 asection *sreloc = elf_section_data (p->sec)->sreloc;
4354 sreloc->size += p->count * sizeof (Elf32_External_Rela);
4355 }
4356
4357 return TRUE;
4358 }
4359
4360 /* Find any dynamic relocs that apply to read-only sections. */
4361
4362 static bfd_boolean
4363 readonly_dynrelocs (struct elf_link_hash_entry *h, void *info)
4364 {
4365 struct ppc_elf_dyn_relocs *p;
4366
4367 if (h->root.type == bfd_link_hash_indirect)
4368 return TRUE;
4369
4370 if (h->root.type == bfd_link_hash_warning)
4371 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4372
4373 for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next)
4374 {
4375 asection *s = p->sec->output_section;
4376
4377 if (s != NULL
4378 && ((s->flags & (SEC_READONLY | SEC_ALLOC))
4379 == (SEC_READONLY | SEC_ALLOC)))
4380 {
4381 ((struct bfd_link_info *) info)->flags |= DF_TEXTREL;
4382
4383 /* Not an error, just cut short the traversal. */
4384 return FALSE;
4385 }
4386 }
4387 return TRUE;
4388 }
4389
4390 /* Set the sizes of the dynamic sections. */
4391
4392 static bfd_boolean
4393 ppc_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
4394 struct bfd_link_info *info)
4395 {
4396 struct ppc_elf_link_hash_table *htab;
4397 asection *s;
4398 bfd_boolean relocs;
4399 bfd *ibfd;
4400
4401 #ifdef DEBUG
4402 fprintf (stderr, "ppc_elf_size_dynamic_sections called\n");
4403 #endif
4404
4405 htab = ppc_elf_hash_table (info);
4406 BFD_ASSERT (htab->elf.dynobj != NULL);
4407
4408 if (elf_hash_table (info)->dynamic_sections_created)
4409 {
4410 /* Set the contents of the .interp section to the interpreter. */
4411 if (info->executable)
4412 {
4413 s = bfd_get_section_by_name (htab->elf.dynobj, ".interp");
4414 BFD_ASSERT (s != NULL);
4415 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
4416 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
4417 }
4418 }
4419
4420 if (htab->old_plt)
4421 htab->got_header_size = 16;
4422 else
4423 htab->got_header_size = 12;
4424
4425 /* Set up .got offsets for local syms, and space for local dynamic
4426 relocs. */
4427 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
4428 {
4429 bfd_signed_vma *local_got;
4430 bfd_signed_vma *end_local_got;
4431 char *lgot_masks;
4432 bfd_size_type locsymcount;
4433 Elf_Internal_Shdr *symtab_hdr;
4434
4435 if (!is_ppc_elf_target (ibfd->xvec))
4436 continue;
4437
4438 for (s = ibfd->sections; s != NULL; s = s->next)
4439 {
4440 struct ppc_elf_dyn_relocs *p;
4441
4442 for (p = ((struct ppc_elf_dyn_relocs *)
4443 elf_section_data (s)->local_dynrel);
4444 p != NULL;
4445 p = p->next)
4446 {
4447 if (!bfd_is_abs_section (p->sec)
4448 && bfd_is_abs_section (p->sec->output_section))
4449 {
4450 /* Input section has been discarded, either because
4451 it is a copy of a linkonce section or due to
4452 linker script /DISCARD/, so we'll be discarding
4453 the relocs too. */
4454 }
4455 else if (p->count != 0)
4456 {
4457 elf_section_data (p->sec)->sreloc->size
4458 += p->count * sizeof (Elf32_External_Rela);
4459 if ((p->sec->output_section->flags
4460 & (SEC_READONLY | SEC_ALLOC))
4461 == (SEC_READONLY | SEC_ALLOC))
4462 info->flags |= DF_TEXTREL;
4463 }
4464 }
4465 }
4466
4467 local_got = elf_local_got_refcounts (ibfd);
4468 if (!local_got)
4469 continue;
4470
4471 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
4472 locsymcount = symtab_hdr->sh_info;
4473 end_local_got = local_got + locsymcount;
4474 lgot_masks = (char *) end_local_got;
4475 for (; local_got < end_local_got; ++local_got, ++lgot_masks)
4476 if (*local_got > 0)
4477 {
4478 if (*lgot_masks == (TLS_TLS | TLS_LD))
4479 {
4480 /* If just an LD reloc, we'll just use
4481 htab->tlsld_got.offset. */
4482 htab->tlsld_got.refcount += 1;
4483 *local_got = (bfd_vma) -1;
4484 }
4485 else
4486 {
4487 unsigned int need = 0;
4488 if ((*lgot_masks & TLS_TLS) != 0)
4489 {
4490 if ((*lgot_masks & TLS_GD) != 0)
4491 need += 8;
4492 if ((*lgot_masks & (TLS_TPREL | TLS_TPRELGD)) != 0)
4493 need += 4;
4494 if ((*lgot_masks & TLS_DTPREL) != 0)
4495 need += 4;
4496 }
4497 else
4498 need += 4;
4499 *local_got = allocate_got (htab, need);
4500 if (info->shared)
4501 htab->relgot->size += (need
4502 * (sizeof (Elf32_External_Rela) / 4));
4503 }
4504 }
4505 else
4506 *local_got = (bfd_vma) -1;
4507 }
4508
4509 if (htab->tlsld_got.refcount > 0)
4510 {
4511 htab->tlsld_got.offset = allocate_got (htab, 8);
4512 if (info->shared)
4513 htab->relgot->size += sizeof (Elf32_External_Rela);
4514 }
4515 else
4516 htab->tlsld_got.offset = (bfd_vma) -1;
4517
4518 /* Allocate space for global sym dynamic relocs. */
4519 elf_link_hash_traverse (elf_hash_table (info), allocate_dynrelocs, info);
4520
4521 if (htab->got != NULL)
4522 {
4523 unsigned int g_o_t = 32768;
4524
4525 /* If we haven't allocated the header, do so now. */
4526 if (htab->got->size <= 32768)
4527 {
4528 g_o_t = htab->got->size;
4529 htab->got->size += htab->got_header_size;
4530 }
4531 if (htab->old_plt)
4532 g_o_t += 4;
4533
4534 htab->elf.hgot->root.u.def.value = g_o_t;
4535 }
4536
4537 if (htab->glink != NULL && htab->glink->size != 0)
4538 {
4539 htab->glink_pltresolve = htab->glink->size;
4540 /* Space for the branch table. */
4541 htab->glink->size += htab->glink->size / (GLINK_ENTRY_SIZE / 4) - 4;
4542 /* Pad out to align the start of PLTresolve. */
4543 htab->glink->size += -htab->glink->size & 15;
4544 htab->glink->size += GLINK_PLTRESOLVE;
4545 }
4546
4547 /* We've now determined the sizes of the various dynamic sections.
4548 Allocate memory for them. */
4549 relocs = FALSE;
4550 for (s = htab->elf.dynobj->sections; s != NULL; s = s->next)
4551 {
4552 if ((s->flags & SEC_LINKER_CREATED) == 0)
4553 continue;
4554
4555 if (s == htab->plt
4556 || s == htab->glink
4557 || s == htab->got
4558 || s == htab->sbss)
4559 {
4560 /* Strip this section if we don't need it; see the
4561 comment below. */
4562 }
4563 else if (s == htab->sdata[0].section
4564 || s == htab->sdata[1].section)
4565 {
4566 /* Strip these too. */
4567 }
4568 else if (strncmp (bfd_get_section_name (dynobj, s), ".rela", 5) == 0)
4569 {
4570 if (s->size == 0)
4571 {
4572 /* If we don't need this section, strip it from the
4573 output file. This is mostly to handle .rela.bss and
4574 .rela.plt. We must create both sections in
4575 create_dynamic_sections, because they must be created
4576 before the linker maps input sections to output
4577 sections. The linker does that before
4578 adjust_dynamic_symbol is called, and it is that
4579 function which decides whether anything needs to go
4580 into these sections. */
4581 }
4582 else
4583 {
4584 /* Remember whether there are any relocation sections. */
4585 relocs = TRUE;
4586
4587 /* We use the reloc_count field as a counter if we need
4588 to copy relocs into the output file. */
4589 s->reloc_count = 0;
4590 }
4591 }
4592 else
4593 {
4594 /* It's not one of our sections, so don't allocate space. */
4595 continue;
4596 }
4597
4598 if (s->size == 0)
4599 {
4600 s->flags |= SEC_EXCLUDE;
4601 continue;
4602 }
4603
4604 if ((s->flags & SEC_HAS_CONTENTS) == 0)
4605 continue;
4606
4607 /* Allocate memory for the section contents. */
4608 s->contents = bfd_zalloc (htab->elf.dynobj, s->size);
4609 if (s->contents == NULL)
4610 return FALSE;
4611 }
4612
4613 if (htab->elf.dynamic_sections_created)
4614 {
4615 /* Add some entries to the .dynamic section. We fill in the
4616 values later, in ppc_elf_finish_dynamic_sections, but we
4617 must add the entries now so that we get the correct size for
4618 the .dynamic section. The DT_DEBUG entry is filled in by the
4619 dynamic linker and used by the debugger. */
4620 #define add_dynamic_entry(TAG, VAL) \
4621 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
4622
4623 if (info->executable)
4624 {
4625 if (!add_dynamic_entry (DT_DEBUG, 0))
4626 return FALSE;
4627 }
4628
4629 if (htab->plt != NULL && htab->plt->size != 0)
4630 {
4631 if (!add_dynamic_entry (DT_PLTGOT, 0)
4632 || !add_dynamic_entry (DT_PLTRELSZ, 0)
4633 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
4634 || !add_dynamic_entry (DT_JMPREL, 0))
4635 return FALSE;
4636 }
4637
4638 if (htab->glink != NULL && htab->glink->size != 0)
4639 {
4640 if (!add_dynamic_entry (DT_PPC_GOT, 0))
4641 return FALSE;
4642 }
4643
4644 if (relocs)
4645 {
4646 if (!add_dynamic_entry (DT_RELA, 0)
4647 || !add_dynamic_entry (DT_RELASZ, 0)
4648 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
4649 return FALSE;
4650 }
4651
4652 /* If any dynamic relocs apply to a read-only section, then we
4653 need a DT_TEXTREL entry. */
4654 if ((info->flags & DF_TEXTREL) == 0)
4655 elf_link_hash_traverse (elf_hash_table (info), readonly_dynrelocs,
4656 info);
4657
4658 if ((info->flags & DF_TEXTREL) != 0)
4659 {
4660 if (!add_dynamic_entry (DT_TEXTREL, 0))
4661 return FALSE;
4662 }
4663 }
4664 #undef add_dynamic_entry
4665
4666 return TRUE;
4667 }
4668 \f
4669 #define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0]))
4670
4671 static const int shared_stub_entry[] =
4672 {
4673 0x7c0802a6, /* mflr 0 */
4674 0x429f0005, /* bcl 20, 31, .Lxxx */
4675 0x7d6802a6, /* mflr 11 */
4676 0x3d6b0000, /* addis 11, 11, (xxx-.Lxxx)@ha */
4677 0x396b0018, /* addi 11, 11, (xxx-.Lxxx)@l */
4678 0x7c0803a6, /* mtlr 0 */
4679 0x7d6903a6, /* mtctr 11 */
4680 0x4e800420, /* bctr */
4681 };
4682
4683 static const int stub_entry[] =
4684 {
4685 0x3d600000, /* lis 11,xxx@ha */
4686 0x396b0000, /* addi 11,11,xxx@l */
4687 0x7d6903a6, /* mtctr 11 */
4688 0x4e800420, /* bctr */
4689 };
4690
4691 static bfd_boolean
4692 ppc_elf_relax_section (bfd *abfd,
4693 asection *isec,
4694 struct bfd_link_info *link_info,
4695 bfd_boolean *again)
4696 {
4697 struct one_fixup
4698 {
4699 struct one_fixup *next;
4700 asection *tsec;
4701 bfd_vma toff;
4702 bfd_vma trampoff;
4703 };
4704
4705 Elf_Internal_Shdr *symtab_hdr;
4706 bfd_byte *contents = NULL;
4707 Elf_Internal_Sym *isymbuf = NULL;
4708 Elf_Internal_Rela *internal_relocs = NULL;
4709 Elf_Internal_Rela *irel, *irelend;
4710 struct one_fixup *fixups = NULL;
4711 bfd_boolean changed;
4712 struct ppc_elf_link_hash_table *htab;
4713 bfd_size_type trampoff;
4714 asection *got2;
4715
4716 *again = FALSE;
4717
4718 /* Nothing to do if there are no relocations, and no need to do
4719 anything with non-alloc sections. */
4720 if ((isec->flags & SEC_ALLOC) == 0
4721 || (isec->flags & SEC_RELOC) == 0
4722 || isec->reloc_count == 0)
4723 return TRUE;
4724
4725 trampoff = (isec->size + 3) & (bfd_vma) -4;
4726 /* Space for a branch around any trampolines. */
4727 trampoff += 4;
4728
4729 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
4730
4731 /* Get a copy of the native relocations. */
4732 internal_relocs = _bfd_elf_link_read_relocs (abfd, isec, NULL, NULL,
4733 link_info->keep_memory);
4734 if (internal_relocs == NULL)
4735 goto error_return;
4736
4737 htab = ppc_elf_hash_table (link_info);
4738 got2 = bfd_get_section_by_name (abfd, ".got2");
4739
4740 irelend = internal_relocs + isec->reloc_count;
4741 for (irel = internal_relocs; irel < irelend; irel++)
4742 {
4743 unsigned long r_type = ELF32_R_TYPE (irel->r_info);
4744 bfd_vma symaddr, reladdr, toff, roff;
4745 asection *tsec;
4746 struct one_fixup *f;
4747 size_t insn_offset = 0;
4748 bfd_vma max_branch_offset, val;
4749 bfd_byte *hit_addr;
4750 unsigned long t0;
4751 unsigned char sym_type;
4752
4753 switch (r_type)
4754 {
4755 case R_PPC_REL24:
4756 case R_PPC_LOCAL24PC:
4757 case R_PPC_PLTREL24:
4758 max_branch_offset = 1 << 25;
4759 break;
4760
4761 case R_PPC_REL14:
4762 case R_PPC_REL14_BRTAKEN:
4763 case R_PPC_REL14_BRNTAKEN:
4764 max_branch_offset = 1 << 15;
4765 break;
4766
4767 default:
4768 continue;
4769 }
4770
4771 /* Get the value of the symbol referred to by the reloc. */
4772 if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
4773 {
4774 /* A local symbol. */
4775 Elf_Internal_Sym *isym;
4776
4777 /* Read this BFD's local symbols. */
4778 if (isymbuf == NULL)
4779 {
4780 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
4781 if (isymbuf == NULL)
4782 isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
4783 symtab_hdr->sh_info, 0,
4784 NULL, NULL, NULL);
4785 if (isymbuf == 0)
4786 goto error_return;
4787 }
4788 isym = isymbuf + ELF32_R_SYM (irel->r_info);
4789 if (isym->st_shndx == SHN_UNDEF)
4790 continue; /* We can't do anything with undefined symbols. */
4791 else if (isym->st_shndx == SHN_ABS)
4792 tsec = bfd_abs_section_ptr;
4793 else if (isym->st_shndx == SHN_COMMON)
4794 tsec = bfd_com_section_ptr;
4795 else
4796 tsec = bfd_section_from_elf_index (abfd, isym->st_shndx);
4797
4798 toff = isym->st_value;
4799 sym_type = ELF_ST_TYPE (isym->st_info);
4800 }
4801 else
4802 {
4803 /* Global symbol handling. */
4804 unsigned long indx;
4805 struct elf_link_hash_entry *h;
4806
4807 indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
4808 h = elf_sym_hashes (abfd)[indx];
4809
4810 while (h->root.type == bfd_link_hash_indirect
4811 || h->root.type == bfd_link_hash_warning)
4812 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4813
4814 tsec = NULL;
4815 toff = 0;
4816 if (r_type == R_PPC_PLTREL24
4817 && htab->plt != NULL)
4818 {
4819 struct plt_entry *ent = find_plt_ent (h, got2, irel->r_addend);
4820
4821 if (ent != NULL)
4822 {
4823 if (!htab->old_plt)
4824 {
4825 tsec = htab->glink;
4826 toff = ent->glink_offset;
4827 }
4828 else
4829 {
4830 tsec = htab->plt;
4831 toff = ent->plt.offset;
4832 }
4833 }
4834 }
4835 if (tsec != NULL)
4836 ;
4837 else if (h->root.type == bfd_link_hash_defined
4838 || h->root.type == bfd_link_hash_defweak)
4839 {
4840 tsec = h->root.u.def.section;
4841 toff = h->root.u.def.value;
4842 }
4843 else
4844 continue;
4845
4846 sym_type = h->type;
4847 }
4848
4849 /* If the branch and target are in the same section, you have
4850 no hope of adding stubs. We'll error out later should the
4851 branch overflow. */
4852 if (tsec == isec)
4853 continue;
4854
4855 /* There probably isn't any reason to handle symbols in
4856 SEC_MERGE sections; SEC_MERGE doesn't seem a likely
4857 attribute for a code section, and we are only looking at
4858 branches. However, implement it correctly here as a
4859 reference for other target relax_section functions. */
4860 if (0 && tsec->sec_info_type == ELF_INFO_TYPE_MERGE)
4861 {
4862 /* At this stage in linking, no SEC_MERGE symbol has been
4863 adjusted, so all references to such symbols need to be
4864 passed through _bfd_merged_section_offset. (Later, in
4865 relocate_section, all SEC_MERGE symbols *except* for
4866 section symbols have been adjusted.)
4867
4868 gas may reduce relocations against symbols in SEC_MERGE
4869 sections to a relocation against the section symbol when
4870 the original addend was zero. When the reloc is against
4871 a section symbol we should include the addend in the
4872 offset passed to _bfd_merged_section_offset, since the
4873 location of interest is the original symbol. On the
4874 other hand, an access to "sym+addend" where "sym" is not
4875 a section symbol should not include the addend; Such an
4876 access is presumed to be an offset from "sym"; The
4877 location of interest is just "sym". */
4878 if (sym_type == STT_SECTION)
4879 toff += irel->r_addend;
4880
4881 toff = _bfd_merged_section_offset (abfd, &tsec,
4882 elf_section_data (tsec)->sec_info,
4883 toff);
4884
4885 if (sym_type != STT_SECTION)
4886 toff += irel->r_addend;
4887 }
4888 /* PLTREL24 addends are special. */
4889 else if (r_type != R_PPC_PLTREL24)
4890 toff += irel->r_addend;
4891
4892 symaddr = tsec->output_section->vma + tsec->output_offset + toff;
4893
4894 roff = irel->r_offset;
4895 reladdr = isec->output_section->vma + isec->output_offset + roff;
4896
4897 /* If the branch is in range, no need to do anything. */
4898 if (symaddr - reladdr + max_branch_offset < 2 * max_branch_offset)
4899 continue;
4900
4901 /* Look for an existing fixup to this address. */
4902 for (f = fixups; f ; f = f->next)
4903 if (f->tsec == tsec && f->toff == toff)
4904 break;
4905
4906 if (f == NULL)
4907 {
4908 size_t size;
4909 unsigned long stub_rtype;
4910
4911 val = trampoff - roff;
4912 if (val >= max_branch_offset)
4913 /* Oh dear, we can't reach a trampoline. Don't try to add
4914 one. We'll report an error later. */
4915 continue;
4916
4917 if (link_info->shared)
4918 {
4919 size = 4 * ARRAY_SIZE (shared_stub_entry);
4920 insn_offset = 12;
4921 stub_rtype = R_PPC_RELAX32PC;
4922 }
4923 else
4924 {
4925 size = 4 * ARRAY_SIZE (stub_entry);
4926 insn_offset = 0;
4927 stub_rtype = R_PPC_RELAX32;
4928 }
4929
4930 if (R_PPC_RELAX32_PLT - R_PPC_RELAX32
4931 != R_PPC_RELAX32PC_PLT - R_PPC_RELAX32PC)
4932 abort ();
4933 if (tsec == htab->plt
4934 || tsec == htab->glink)
4935 stub_rtype += R_PPC_RELAX32_PLT - R_PPC_RELAX32;
4936
4937 /* Hijack the old relocation. Since we need two
4938 relocations for this use a "composite" reloc. */
4939 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
4940 stub_rtype);
4941 irel->r_offset = trampoff + insn_offset;
4942
4943 /* Record the fixup so we don't do it again this section. */
4944 f = bfd_malloc (sizeof (*f));
4945 f->next = fixups;
4946 f->tsec = tsec;
4947 f->toff = toff;
4948 f->trampoff = trampoff;
4949 fixups = f;
4950
4951 trampoff += size;
4952 }
4953 else
4954 {
4955 val = f->trampoff - roff;
4956 if (val >= max_branch_offset)
4957 continue;
4958
4959 /* Nop out the reloc, since we're finalizing things here. */
4960 irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
4961 }
4962
4963 /* Get the section contents. */
4964 if (contents == NULL)
4965 {
4966 /* Get cached copy if it exists. */
4967 if (elf_section_data (isec)->this_hdr.contents != NULL)
4968 contents = elf_section_data (isec)->this_hdr.contents;
4969 else
4970 {
4971 /* Go get them off disk. */
4972 if (!bfd_malloc_and_get_section (abfd, isec, &contents))
4973 goto error_return;
4974 }
4975 }
4976
4977 /* Fix up the existing branch to hit the trampoline. */
4978 hit_addr = contents + roff;
4979 switch (r_type)
4980 {
4981 case R_PPC_REL24:
4982 case R_PPC_LOCAL24PC:
4983 case R_PPC_PLTREL24:
4984 t0 = bfd_get_32 (abfd, hit_addr);
4985 t0 &= ~0x3fffffc;
4986 t0 |= val & 0x3fffffc;
4987 bfd_put_32 (abfd, t0, hit_addr);
4988 break;
4989
4990 case R_PPC_REL14:
4991 case R_PPC_REL14_BRTAKEN:
4992 case R_PPC_REL14_BRNTAKEN:
4993 t0 = bfd_get_32 (abfd, hit_addr);
4994 t0 &= ~0xfffc;
4995 t0 |= val & 0xfffc;
4996 bfd_put_32 (abfd, t0, hit_addr);
4997 break;
4998 }
4999 }
5000
5001 /* Write out the trampolines. */
5002 changed = fixups != NULL;
5003 if (fixups != NULL)
5004 {
5005 const int *stub;
5006 bfd_byte *dest;
5007 bfd_vma val;
5008 int i, size;
5009
5010 do
5011 {
5012 struct one_fixup *f = fixups;
5013 fixups = fixups->next;
5014 free (f);
5015 }
5016 while (fixups);
5017
5018 contents = bfd_realloc (contents, trampoff);
5019 if (contents == NULL)
5020 goto error_return;
5021
5022 isec->size = (isec->size + 3) & (bfd_vma) -4;
5023 /* Branch around the trampolines. */
5024 val = trampoff - isec->size + 0x48000000;
5025 dest = contents + isec->size;
5026 isec->size = trampoff;
5027 bfd_put_32 (abfd, val, dest);
5028 dest += 4;
5029
5030 if (link_info->shared)
5031 {
5032 stub = shared_stub_entry;
5033 size = ARRAY_SIZE (shared_stub_entry);
5034 }
5035 else
5036 {
5037 stub = stub_entry;
5038 size = ARRAY_SIZE (stub_entry);
5039 }
5040
5041 i = 0;
5042 while (dest < contents + trampoff)
5043 {
5044 bfd_put_32 (abfd, stub[i], dest);
5045 i++;
5046 if (i == size)
5047 i = 0;
5048 dest += 4;
5049 }
5050 BFD_ASSERT (i == 0);
5051 }
5052
5053 if (isymbuf != NULL
5054 && symtab_hdr->contents != (unsigned char *) isymbuf)
5055 {
5056 if (! link_info->keep_memory)
5057 free (isymbuf);
5058 else
5059 {
5060 /* Cache the symbols for elf_link_input_bfd. */
5061 symtab_hdr->contents = (unsigned char *) isymbuf;
5062 }
5063 }
5064
5065 if (contents != NULL
5066 && elf_section_data (isec)->this_hdr.contents != contents)
5067 {
5068 if (!changed && !link_info->keep_memory)
5069 free (contents);
5070 else
5071 {
5072 /* Cache the section contents for elf_link_input_bfd. */
5073 elf_section_data (isec)->this_hdr.contents = contents;
5074 }
5075 }
5076
5077 if (elf_section_data (isec)->relocs != internal_relocs)
5078 {
5079 if (!changed)
5080 free (internal_relocs);
5081 else
5082 elf_section_data (isec)->relocs = internal_relocs;
5083 }
5084
5085 *again = changed;
5086 return TRUE;
5087
5088 error_return:
5089 if (isymbuf != NULL && (unsigned char *) isymbuf != symtab_hdr->contents)
5090 free (isymbuf);
5091 if (contents != NULL
5092 && elf_section_data (isec)->this_hdr.contents != contents)
5093 free (contents);
5094 if (internal_relocs != NULL
5095 && elf_section_data (isec)->relocs != internal_relocs)
5096 free (internal_relocs);
5097 return FALSE;
5098 }
5099 \f
5100 /* Set _SDA_BASE_, _SDA2_BASE, and sbss start and end syms. They are
5101 set here rather than via PROVIDE in the default linker script,
5102 because using PROVIDE inside an output section statement results in
5103 unnecessary output sections. Using PROVIDE outside an output section
5104 statement runs the risk of section alignment affecting where the
5105 section starts. */
5106
5107 bfd_boolean
5108 ppc_elf_set_sdata_syms (bfd *obfd, struct bfd_link_info *info)
5109 {
5110 struct ppc_elf_link_hash_table *htab;
5111 unsigned i;
5112 asection *s;
5113 bfd_vma val;
5114
5115 htab = ppc_elf_hash_table (info);
5116
5117 for (i = 0; i < 2; i++)
5118 {
5119 elf_linker_section_t *lsect = &htab->sdata[i];
5120
5121 s = lsect->section;
5122 if (s != NULL)
5123 s = s->output_section;
5124 if (s == NULL)
5125 s = bfd_get_section_by_name (obfd, lsect->name);
5126 if (s == NULL)
5127 s = bfd_get_section_by_name (obfd, lsect->bss_name);
5128
5129 if (s)
5130 {
5131 /* VxWorks executables are relocatable, so the sdata base symbols
5132 must be section-relative. If the section is zero sized leave
5133 them as absolute symbols to avoid creationg an unused
5134 output section. */
5135 val = 32768;
5136 lsect->sym_val = val + s->vma;
5137 if (s->size == 0)
5138 {
5139 val += s->vma;
5140 s = NULL;
5141 }
5142 }
5143 else
5144 {
5145 val = 0;
5146 lsect->sym_val = 0;
5147 }
5148
5149 _bfd_elf_provide_symbol (info, lsect->sym_name, val, s);
5150 }
5151
5152 s = bfd_get_section_by_name (obfd, ".sbss");
5153 _bfd_elf_provide_symbol (info, "__sbss_start", 0, NULL);
5154 _bfd_elf_provide_symbol (info, "___sbss_start", 0, NULL);
5155 if (s != NULL)
5156 val = s->size;
5157 else
5158 val = 0;
5159 _bfd_elf_provide_symbol (info, "__sbss_end", val, s);
5160 _bfd_elf_provide_symbol (info, "___sbss_end", val, s);
5161 return TRUE;
5162 }
5163 \f
5164 /* Fill in the address for a pointer generated in a linker section. */
5165
5166 static bfd_vma
5167 elf_finish_pointer_linker_section (bfd *input_bfd,
5168 elf_linker_section_t *lsect,
5169 struct elf_link_hash_entry *h,
5170 bfd_vma relocation,
5171 const Elf_Internal_Rela *rel)
5172 {
5173 elf_linker_section_pointers_t *linker_section_ptr;
5174
5175 BFD_ASSERT (lsect != NULL);
5176
5177 if (h != NULL)
5178 {
5179 /* Handle global symbol. */
5180 struct ppc_elf_link_hash_entry *eh;
5181
5182 eh = (struct ppc_elf_link_hash_entry *) h;
5183 BFD_ASSERT (eh->elf.def_regular);
5184 linker_section_ptr = eh->linker_section_pointer;
5185 }
5186 else
5187 {
5188 /* Handle local symbol. */
5189 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
5190
5191 BFD_ASSERT (elf_local_ptr_offsets (input_bfd) != NULL);
5192 linker_section_ptr = elf_local_ptr_offsets (input_bfd)[r_symndx];
5193 }
5194
5195 linker_section_ptr = elf_find_pointer_linker_section (linker_section_ptr,
5196 rel->r_addend,
5197 lsect);
5198 BFD_ASSERT (linker_section_ptr != NULL);
5199
5200 /* Offset will always be a multiple of four, so use the bottom bit
5201 as a "written" flag. */
5202 if ((linker_section_ptr->offset & 1) == 0)
5203 {
5204 bfd_put_32 (lsect->section->owner,
5205 relocation + linker_section_ptr->addend,
5206 lsect->section->contents + linker_section_ptr->offset);
5207 linker_section_ptr->offset += 1;
5208 }
5209
5210 relocation = (lsect->section->output_offset
5211 + linker_section_ptr->offset - 1
5212 - 0x8000);
5213
5214 #ifdef DEBUG
5215 fprintf (stderr,
5216 "Finish pointer in linker section %s, offset = %ld (0x%lx)\n",
5217 lsect->name, (long) relocation, (long) relocation);
5218 #endif
5219
5220 /* Subtract out the addend, because it will get added back in by the normal
5221 processing. */
5222 return relocation - linker_section_ptr->addend;
5223 }
5224
5225 /* The RELOCATE_SECTION function is called by the ELF backend linker
5226 to handle the relocations for a section.
5227
5228 The relocs are always passed as Rela structures; if the section
5229 actually uses Rel structures, the r_addend field will always be
5230 zero.
5231
5232 This function is responsible for adjust the section contents as
5233 necessary, and (if using Rela relocs and generating a
5234 relocatable output file) adjusting the reloc addend as
5235 necessary.
5236
5237 This function does not have to worry about setting the reloc
5238 address or the reloc symbol index.
5239
5240 LOCAL_SYMS is a pointer to the swapped in local symbols.
5241
5242 LOCAL_SECTIONS is an array giving the section in the input file
5243 corresponding to the st_shndx field of each local symbol.
5244
5245 The global hash table entry for the global symbols can be found
5246 via elf_sym_hashes (input_bfd).
5247
5248 When generating relocatable output, this function must handle
5249 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
5250 going to be the section symbol corresponding to the output
5251 section, which means that the addend must be adjusted
5252 accordingly. */
5253
5254 static bfd_boolean
5255 ppc_elf_relocate_section (bfd *output_bfd,
5256 struct bfd_link_info *info,
5257 bfd *input_bfd,
5258 asection *input_section,
5259 bfd_byte *contents,
5260 Elf_Internal_Rela *relocs,
5261 Elf_Internal_Sym *local_syms,
5262 asection **local_sections)
5263 {
5264 Elf_Internal_Shdr *symtab_hdr;
5265 struct elf_link_hash_entry **sym_hashes;
5266 struct ppc_elf_link_hash_table *htab;
5267 Elf_Internal_Rela *rel;
5268 Elf_Internal_Rela *relend;
5269 Elf_Internal_Rela outrel;
5270 bfd_byte *loc;
5271 asection *got2, *sreloc = NULL;
5272 bfd_vma *local_got_offsets;
5273 bfd_boolean ret = TRUE;
5274
5275 #ifdef DEBUG
5276 _bfd_error_handler ("ppc_elf_relocate_section called for %B section %A, "
5277 "%ld relocations%s",
5278 input_bfd, input_section,
5279 (long) input_section->reloc_count,
5280 (info->relocatable) ? " (relocatable)" : "");
5281 #endif
5282
5283 got2 = bfd_get_section_by_name (input_bfd, ".got2");
5284
5285 if (info->relocatable)
5286 {
5287 if (got2 == NULL)
5288 return TRUE;
5289
5290 rel = relocs;
5291 relend = relocs + input_section->reloc_count;
5292 for (; rel < relend; rel++)
5293 {
5294 enum elf_ppc_reloc_type r_type;
5295
5296 r_type = ELF32_R_TYPE (rel->r_info);
5297 if (r_type == R_PPC_PLTREL24
5298 && rel->r_addend >= 32768)
5299 {
5300 /* R_PPC_PLTREL24 is rather special. If non-zero, the
5301 addend specifies the GOT pointer offset within .got2. */
5302 rel->r_addend += got2->output_offset;
5303 }
5304 }
5305 return TRUE;
5306 }
5307
5308 /* Initialize howto table if not already done. */
5309 if (!ppc_elf_howto_table[R_PPC_ADDR32])
5310 ppc_elf_howto_init ();
5311
5312 htab = ppc_elf_hash_table (info);
5313 local_got_offsets = elf_local_got_offsets (input_bfd);
5314 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
5315 sym_hashes = elf_sym_hashes (input_bfd);
5316 rel = relocs;
5317 relend = relocs + input_section->reloc_count;
5318 for (; rel < relend; rel++)
5319 {
5320 enum elf_ppc_reloc_type r_type;
5321 bfd_vma addend;
5322 bfd_reloc_status_type r;
5323 Elf_Internal_Sym *sym;
5324 asection *sec;
5325 struct elf_link_hash_entry *h;
5326 const char *sym_name;
5327 reloc_howto_type *howto;
5328 unsigned long r_symndx;
5329 bfd_vma relocation;
5330 bfd_vma branch_bit, insn, from;
5331 bfd_boolean unresolved_reloc;
5332 bfd_boolean warned;
5333 unsigned int tls_type, tls_mask, tls_gd;
5334
5335 r_type = ELF32_R_TYPE (rel->r_info);
5336 sym = NULL;
5337 sec = NULL;
5338 h = NULL;
5339 unresolved_reloc = FALSE;
5340 warned = FALSE;
5341 r_symndx = ELF32_R_SYM (rel->r_info);
5342
5343 if (r_symndx < symtab_hdr->sh_info)
5344 {
5345 sym = local_syms + r_symndx;
5346 sec = local_sections[r_symndx];
5347 sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
5348
5349 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
5350 }
5351 else
5352 {
5353 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
5354 r_symndx, symtab_hdr, sym_hashes,
5355 h, sec, relocation,
5356 unresolved_reloc, warned);
5357
5358 sym_name = h->root.root.string;
5359 }
5360
5361 /* TLS optimizations. Replace instruction sequences and relocs
5362 based on information we collected in tls_optimize. We edit
5363 RELOCS so that --emit-relocs will output something sensible
5364 for the final instruction stream. */
5365 tls_mask = 0;
5366 tls_gd = 0;
5367 if (IS_PPC_TLS_RELOC (r_type))
5368 {
5369 if (h != NULL)
5370 tls_mask = ((struct ppc_elf_link_hash_entry *) h)->tls_mask;
5371 else if (local_got_offsets != NULL)
5372 {
5373 char *lgot_masks;
5374 lgot_masks = (char *) (local_got_offsets + symtab_hdr->sh_info);
5375 tls_mask = lgot_masks[r_symndx];
5376 }
5377 }
5378
5379 /* Ensure reloc mapping code below stays sane. */
5380 if ((R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TLSGD16 & 3)
5381 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TLSGD16_LO & 3)
5382 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TLSGD16_HI & 3)
5383 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TLSGD16_HA & 3)
5384 || (R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TPREL16 & 3)
5385 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TPREL16_LO & 3)
5386 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TPREL16_HI & 3)
5387 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TPREL16_HA & 3))
5388 abort ();
5389 switch (r_type)
5390 {
5391 default:
5392 break;
5393
5394 case R_PPC_GOT_TPREL16:
5395 case R_PPC_GOT_TPREL16_LO:
5396 if (tls_mask != 0
5397 && (tls_mask & TLS_TPREL) == 0)
5398 {
5399 bfd_vma insn;
5400 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - 2);
5401 insn &= 31 << 21;
5402 insn |= 0x3c020000; /* addis 0,2,0 */
5403 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - 2);
5404 r_type = R_PPC_TPREL16_HA;
5405 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
5406 }
5407 break;
5408
5409 case R_PPC_TLS:
5410 if (tls_mask != 0
5411 && (tls_mask & TLS_TPREL) == 0)
5412 {
5413 bfd_vma insn, rtra;
5414 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
5415 if ((insn & ((31 << 26) | (31 << 11)))
5416 == ((31 << 26) | (2 << 11)))
5417 rtra = insn & ((1 << 26) - (1 << 16));
5418 else if ((insn & ((31 << 26) | (31 << 16)))
5419 == ((31 << 26) | (2 << 16)))
5420 rtra = (insn & (31 << 21)) | ((insn & (31 << 11)) << 5);
5421 else
5422 abort ();
5423 if ((insn & ((1 << 11) - (1 << 1))) == 266 << 1)
5424 /* add -> addi. */
5425 insn = 14 << 26;
5426 else if ((insn & (31 << 1)) == 23 << 1
5427 && ((insn & (31 << 6)) < 14 << 6
5428 || ((insn & (31 << 6)) >= 16 << 6
5429 && (insn & (31 << 6)) < 24 << 6)))
5430 /* load and store indexed -> dform. */
5431 insn = (32 | ((insn >> 6) & 31)) << 26;
5432 else if ((insn & (31 << 1)) == 21 << 1
5433 && (insn & (0x1a << 6)) == 0)
5434 /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
5435 insn = (((58 | ((insn >> 6) & 4)) << 26)
5436 | ((insn >> 6) & 1));
5437 else if ((insn & (31 << 1)) == 21 << 1
5438 && (insn & ((1 << 11) - (1 << 1))) == 341 << 1)
5439 /* lwax -> lwa. */
5440 insn = (58 << 26) | 2;
5441 else
5442 abort ();
5443 insn |= rtra;
5444 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
5445 r_type = R_PPC_TPREL16_LO;
5446 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
5447 /* Was PPC_TLS which sits on insn boundary, now
5448 PPC_TPREL16_LO which is at insn+2. */
5449 rel->r_offset += 2;
5450 }
5451 break;
5452
5453 case R_PPC_GOT_TLSGD16_HI:
5454 case R_PPC_GOT_TLSGD16_HA:
5455 tls_gd = TLS_TPRELGD;
5456 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
5457 goto tls_gdld_hi;
5458 break;
5459
5460 case R_PPC_GOT_TLSLD16_HI:
5461 case R_PPC_GOT_TLSLD16_HA:
5462 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
5463 {
5464 tls_gdld_hi:
5465 if ((tls_mask & tls_gd) != 0)
5466 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
5467 + R_PPC_GOT_TPREL16);
5468 else
5469 {
5470 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
5471 rel->r_offset -= 2;
5472 r_type = R_PPC_NONE;
5473 }
5474 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
5475 }
5476 break;
5477
5478 case R_PPC_GOT_TLSGD16:
5479 case R_PPC_GOT_TLSGD16_LO:
5480 tls_gd = TLS_TPRELGD;
5481 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
5482 goto tls_get_addr_check;
5483 break;
5484
5485 case R_PPC_GOT_TLSLD16:
5486 case R_PPC_GOT_TLSLD16_LO:
5487 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
5488 {
5489 tls_get_addr_check:
5490 if (rel + 1 < relend)
5491 {
5492 enum elf_ppc_reloc_type r_type2;
5493 unsigned long r_symndx2;
5494 struct elf_link_hash_entry *h2;
5495 bfd_vma insn1, insn2;
5496 bfd_vma offset;
5497
5498 /* The next instruction should be a call to
5499 __tls_get_addr. Peek at the reloc to be sure. */
5500 r_type2 = ELF32_R_TYPE (rel[1].r_info);
5501 r_symndx2 = ELF32_R_SYM (rel[1].r_info);
5502 if (r_symndx2 < symtab_hdr->sh_info
5503 || (r_type2 != R_PPC_REL14
5504 && r_type2 != R_PPC_REL14_BRTAKEN
5505 && r_type2 != R_PPC_REL14_BRNTAKEN
5506 && r_type2 != R_PPC_REL24
5507 && r_type2 != R_PPC_PLTREL24))
5508 break;
5509
5510 h2 = sym_hashes[r_symndx2 - symtab_hdr->sh_info];
5511 while (h2->root.type == bfd_link_hash_indirect
5512 || h2->root.type == bfd_link_hash_warning)
5513 h2 = (struct elf_link_hash_entry *) h2->root.u.i.link;
5514 if (h2 == NULL || h2 != htab->tls_get_addr)
5515 break;
5516
5517 /* OK, it checks out. Replace the call. */
5518 offset = rel[1].r_offset;
5519 insn1 = bfd_get_32 (output_bfd,
5520 contents + rel->r_offset - 2);
5521 if ((tls_mask & tls_gd) != 0)
5522 {
5523 /* IE */
5524 insn1 &= (1 << 26) - 1;
5525 insn1 |= 32 << 26; /* lwz */
5526 insn2 = 0x7c631214; /* add 3,3,2 */
5527 rel[1].r_info = ELF32_R_INFO (r_symndx2, R_PPC_NONE);
5528 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
5529 + R_PPC_GOT_TPREL16);
5530 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
5531 }
5532 else
5533 {
5534 /* LE */
5535 insn1 = 0x3c620000; /* addis 3,2,0 */
5536 insn2 = 0x38630000; /* addi 3,3,0 */
5537 if (tls_gd == 0)
5538 {
5539 /* Was an LD reloc. */
5540 r_symndx = 0;
5541 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
5542 rel[1].r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
5543 }
5544 r_type = R_PPC_TPREL16_HA;
5545 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
5546 rel[1].r_info = ELF32_R_INFO (r_symndx,
5547 R_PPC_TPREL16_LO);
5548 rel[1].r_offset += 2;
5549 }
5550 bfd_put_32 (output_bfd, insn1, contents + rel->r_offset - 2);
5551 bfd_put_32 (output_bfd, insn2, contents + offset);
5552 if (tls_gd == 0)
5553 {
5554 /* We changed the symbol on an LD reloc. Start over
5555 in order to get h, sym, sec etc. right. */
5556 rel--;
5557 continue;
5558 }
5559 }
5560 }
5561 break;
5562 }
5563
5564 /* Handle other relocations that tweak non-addend part of insn. */
5565 branch_bit = 0;
5566 switch (r_type)
5567 {
5568 default:
5569 break;
5570
5571 /* Branch taken prediction relocations. */
5572 case R_PPC_ADDR14_BRTAKEN:
5573 case R_PPC_REL14_BRTAKEN:
5574 branch_bit = BRANCH_PREDICT_BIT;
5575 /* Fall thru */
5576
5577 /* Branch not taken prediction relocations. */
5578 case R_PPC_ADDR14_BRNTAKEN:
5579 case R_PPC_REL14_BRNTAKEN:
5580 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
5581 insn &= ~BRANCH_PREDICT_BIT;
5582 insn |= branch_bit;
5583
5584 from = (rel->r_offset
5585 + input_section->output_offset
5586 + input_section->output_section->vma);
5587
5588 /* Invert 'y' bit if not the default. */
5589 if ((bfd_signed_vma) (relocation + rel->r_addend - from) < 0)
5590 insn ^= BRANCH_PREDICT_BIT;
5591
5592 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
5593 break;
5594 }
5595
5596 addend = rel->r_addend;
5597 tls_type = 0;
5598 howto = NULL;
5599 if (r_type < R_PPC_max)
5600 howto = ppc_elf_howto_table[r_type];
5601 switch (r_type)
5602 {
5603 default:
5604 (*_bfd_error_handler)
5605 (_("%B: unknown relocation type %d for symbol %s"),
5606 input_bfd, (int) r_type, sym_name);
5607
5608 bfd_set_error (bfd_error_bad_value);
5609 ret = FALSE;
5610 continue;
5611
5612 case R_PPC_NONE:
5613 case R_PPC_TLS:
5614 case R_PPC_EMB_MRKREF:
5615 case R_PPC_GNU_VTINHERIT:
5616 case R_PPC_GNU_VTENTRY:
5617 continue;
5618
5619 /* GOT16 relocations. Like an ADDR16 using the symbol's
5620 address in the GOT as relocation value instead of the
5621 symbol's value itself. Also, create a GOT entry for the
5622 symbol and put the symbol value there. */
5623 case R_PPC_GOT_TLSGD16:
5624 case R_PPC_GOT_TLSGD16_LO:
5625 case R_PPC_GOT_TLSGD16_HI:
5626 case R_PPC_GOT_TLSGD16_HA:
5627 tls_type = TLS_TLS | TLS_GD;
5628 goto dogot;
5629
5630 case R_PPC_GOT_TLSLD16:
5631 case R_PPC_GOT_TLSLD16_LO:
5632 case R_PPC_GOT_TLSLD16_HI:
5633 case R_PPC_GOT_TLSLD16_HA:
5634 tls_type = TLS_TLS | TLS_LD;
5635 goto dogot;
5636
5637 case R_PPC_GOT_TPREL16:
5638 case R_PPC_GOT_TPREL16_LO:
5639 case R_PPC_GOT_TPREL16_HI:
5640 case R_PPC_GOT_TPREL16_HA:
5641 tls_type = TLS_TLS | TLS_TPREL;
5642 goto dogot;
5643
5644 case R_PPC_GOT_DTPREL16:
5645 case R_PPC_GOT_DTPREL16_LO:
5646 case R_PPC_GOT_DTPREL16_HI:
5647 case R_PPC_GOT_DTPREL16_HA:
5648 tls_type = TLS_TLS | TLS_DTPREL;
5649 goto dogot;
5650
5651 case R_PPC_GOT16:
5652 case R_PPC_GOT16_LO:
5653 case R_PPC_GOT16_HI:
5654 case R_PPC_GOT16_HA:
5655 dogot:
5656 {
5657 /* Relocation is to the entry for this symbol in the global
5658 offset table. */
5659 bfd_vma off;
5660 bfd_vma *offp;
5661 unsigned long indx;
5662
5663 if (htab->got == NULL)
5664 abort ();
5665
5666 indx = 0;
5667 if (tls_type == (TLS_TLS | TLS_LD)
5668 && (h == NULL
5669 || !h->def_dynamic))
5670 offp = &htab->tlsld_got.offset;
5671 else if (h != NULL)
5672 {
5673 bfd_boolean dyn;
5674 dyn = htab->elf.dynamic_sections_created;
5675 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
5676 || (info->shared
5677 && SYMBOL_REFERENCES_LOCAL (info, h)))
5678 /* This is actually a static link, or it is a
5679 -Bsymbolic link and the symbol is defined
5680 locally, or the symbol was forced to be local
5681 because of a version file. */
5682 ;
5683 else
5684 {
5685 indx = h->dynindx;
5686 unresolved_reloc = FALSE;
5687 }
5688 offp = &h->got.offset;
5689 }
5690 else
5691 {
5692 if (local_got_offsets == NULL)
5693 abort ();
5694 offp = &local_got_offsets[r_symndx];
5695 }
5696
5697 /* The offset must always be a multiple of 4. We use the
5698 least significant bit to record whether we have already
5699 processed this entry. */
5700 off = *offp;
5701 if ((off & 1) != 0)
5702 off &= ~1;
5703 else
5704 {
5705 unsigned int tls_m = (tls_mask
5706 & (TLS_LD | TLS_GD | TLS_DTPREL
5707 | TLS_TPREL | TLS_TPRELGD));
5708
5709 if (offp == &htab->tlsld_got.offset)
5710 tls_m = TLS_LD;
5711 else if (h == NULL
5712 || !h->def_dynamic)
5713 tls_m &= ~TLS_LD;
5714
5715 /* We might have multiple got entries for this sym.
5716 Initialize them all. */
5717 do
5718 {
5719 int tls_ty = 0;
5720
5721 if ((tls_m & TLS_LD) != 0)
5722 {
5723 tls_ty = TLS_TLS | TLS_LD;
5724 tls_m &= ~TLS_LD;
5725 }
5726 else if ((tls_m & TLS_GD) != 0)
5727 {
5728 tls_ty = TLS_TLS | TLS_GD;
5729 tls_m &= ~TLS_GD;
5730 }
5731 else if ((tls_m & TLS_DTPREL) != 0)
5732 {
5733 tls_ty = TLS_TLS | TLS_DTPREL;
5734 tls_m &= ~TLS_DTPREL;
5735 }
5736 else if ((tls_m & (TLS_TPREL | TLS_TPRELGD)) != 0)
5737 {
5738 tls_ty = TLS_TLS | TLS_TPREL;
5739 tls_m = 0;
5740 }
5741
5742 /* Generate relocs for the dynamic linker. */
5743 if ((info->shared || indx != 0)
5744 && (h == NULL
5745 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
5746 || h->root.type != bfd_link_hash_undefweak))
5747 {
5748 outrel.r_offset = (htab->got->output_section->vma
5749 + htab->got->output_offset
5750 + off);
5751 outrel.r_addend = 0;
5752 if (tls_ty & (TLS_LD | TLS_GD))
5753 {
5754 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPMOD32);
5755 if (tls_ty == (TLS_TLS | TLS_GD))
5756 {
5757 loc = htab->relgot->contents;
5758 loc += (htab->relgot->reloc_count++
5759 * sizeof (Elf32_External_Rela));
5760 bfd_elf32_swap_reloca_out (output_bfd,
5761 &outrel, loc);
5762 outrel.r_offset += 4;
5763 outrel.r_info
5764 = ELF32_R_INFO (indx, R_PPC_DTPREL32);
5765 }
5766 }
5767 else if (tls_ty == (TLS_TLS | TLS_DTPREL))
5768 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPREL32);
5769 else if (tls_ty == (TLS_TLS | TLS_TPREL))
5770 outrel.r_info = ELF32_R_INFO (indx, R_PPC_TPREL32);
5771 else if (indx == 0)
5772 outrel.r_info = ELF32_R_INFO (indx, R_PPC_RELATIVE);
5773 else
5774 outrel.r_info = ELF32_R_INFO (indx, R_PPC_GLOB_DAT);
5775 if (indx == 0)
5776 {
5777 outrel.r_addend += relocation;
5778 if (tls_ty & (TLS_GD | TLS_DTPREL | TLS_TPREL))
5779 outrel.r_addend -= htab->elf.tls_sec->vma;
5780 }
5781 loc = htab->relgot->contents;
5782 loc += (htab->relgot->reloc_count++
5783 * sizeof (Elf32_External_Rela));
5784 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
5785 }
5786
5787 /* Init the .got section contents if we're not
5788 emitting a reloc. */
5789 else
5790 {
5791 bfd_vma value = relocation;
5792
5793 if (tls_ty == (TLS_TLS | TLS_LD))
5794 value = 1;
5795 else if (tls_ty != 0)
5796 {
5797 value -= htab->elf.tls_sec->vma + DTP_OFFSET;
5798 if (tls_ty == (TLS_TLS | TLS_TPREL))
5799 value += DTP_OFFSET - TP_OFFSET;
5800
5801 if (tls_ty == (TLS_TLS | TLS_GD))
5802 {
5803 bfd_put_32 (output_bfd, value,
5804 htab->got->contents + off + 4);
5805 value = 1;
5806 }
5807 }
5808 bfd_put_32 (output_bfd, value,
5809 htab->got->contents + off);
5810 }
5811
5812 off += 4;
5813 if (tls_ty & (TLS_LD | TLS_GD))
5814 off += 4;
5815 }
5816 while (tls_m != 0);
5817
5818 off = *offp;
5819 *offp = off | 1;
5820 }
5821
5822 if (off >= (bfd_vma) -2)
5823 abort ();
5824
5825 if ((tls_type & TLS_TLS) != 0)
5826 {
5827 if (tls_type != (TLS_TLS | TLS_LD))
5828 {
5829 if ((tls_mask & TLS_LD) != 0
5830 && !(h == NULL
5831 || !h->def_dynamic))
5832 off += 8;
5833 if (tls_type != (TLS_TLS | TLS_GD))
5834 {
5835 if ((tls_mask & TLS_GD) != 0)
5836 off += 8;
5837 if (tls_type != (TLS_TLS | TLS_DTPREL))
5838 {
5839 if ((tls_mask & TLS_DTPREL) != 0)
5840 off += 4;
5841 }
5842 }
5843 }
5844 }
5845
5846 relocation = htab->got->output_offset + off;
5847 relocation -= htab->elf.hgot->root.u.def.value;
5848
5849 /* Addends on got relocations don't make much sense.
5850 x+off@got is actually x@got+off, and since the got is
5851 generated by a hash table traversal, the value in the
5852 got at entry m+n bears little relation to the entry m. */
5853 if (addend != 0)
5854 (*_bfd_error_handler)
5855 (_("%B(%A+0x%lx): non-zero addend on %s reloc against `%s'"),
5856 input_bfd,
5857 input_section,
5858 (long) rel->r_offset,
5859 howto->name,
5860 sym_name);
5861 }
5862 break;
5863
5864 /* Relocations that need no special processing. */
5865 case R_PPC_LOCAL24PC:
5866 /* It makes no sense to point a local relocation
5867 at a symbol not in this object. */
5868 if (unresolved_reloc)
5869 {
5870 if (! (*info->callbacks->undefined_symbol) (info,
5871 h->root.root.string,
5872 input_bfd,
5873 input_section,
5874 rel->r_offset,
5875 TRUE))
5876 return FALSE;
5877 continue;
5878 }
5879 break;
5880
5881 case R_PPC_DTPREL16:
5882 case R_PPC_DTPREL16_LO:
5883 case R_PPC_DTPREL16_HI:
5884 case R_PPC_DTPREL16_HA:
5885 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
5886 break;
5887
5888 /* Relocations that may need to be propagated if this is a shared
5889 object. */
5890 case R_PPC_TPREL16:
5891 case R_PPC_TPREL16_LO:
5892 case R_PPC_TPREL16_HI:
5893 case R_PPC_TPREL16_HA:
5894 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
5895 /* The TPREL16 relocs shouldn't really be used in shared
5896 libs as they will result in DT_TEXTREL being set, but
5897 support them anyway. */
5898 goto dodyn;
5899
5900 case R_PPC_TPREL32:
5901 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
5902 goto dodyn;
5903
5904 case R_PPC_DTPREL32:
5905 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
5906 goto dodyn;
5907
5908 case R_PPC_DTPMOD32:
5909 relocation = 1;
5910 addend = 0;
5911 goto dodyn;
5912
5913 case R_PPC_REL16:
5914 case R_PPC_REL16_LO:
5915 case R_PPC_REL16_HI:
5916 case R_PPC_REL16_HA:
5917 break;
5918
5919 case R_PPC_REL24:
5920 case R_PPC_REL32:
5921 case R_PPC_REL14:
5922 case R_PPC_REL14_BRTAKEN:
5923 case R_PPC_REL14_BRNTAKEN:
5924 /* If these relocations are not to a named symbol, they can be
5925 handled right here, no need to bother the dynamic linker. */
5926 if (SYMBOL_REFERENCES_LOCAL (info, h)
5927 || h == htab->elf.hgot)
5928 break;
5929 /* fall through */
5930
5931 /* Relocations that always need to be propagated if this is a shared
5932 object. */
5933 case R_PPC_ADDR32:
5934 case R_PPC_ADDR24:
5935 case R_PPC_ADDR16:
5936 case R_PPC_ADDR16_LO:
5937 case R_PPC_ADDR16_HI:
5938 case R_PPC_ADDR16_HA:
5939 case R_PPC_ADDR14:
5940 case R_PPC_ADDR14_BRTAKEN:
5941 case R_PPC_ADDR14_BRNTAKEN:
5942 case R_PPC_UADDR32:
5943 case R_PPC_UADDR16:
5944 /* r_symndx will be zero only for relocs against symbols
5945 from removed linkonce sections, or sections discarded by
5946 a linker script. */
5947 dodyn:
5948 if (r_symndx == 0)
5949 break;
5950 /* Fall thru. */
5951
5952 if ((input_section->flags & SEC_ALLOC) == 0)
5953 break;
5954 /* Fall thru. */
5955
5956 if ((info->shared
5957 && (h == NULL
5958 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
5959 || h->root.type != bfd_link_hash_undefweak)
5960 && (MUST_BE_DYN_RELOC (r_type)
5961 || !SYMBOL_CALLS_LOCAL (info, h)))
5962 || (ELIMINATE_COPY_RELOCS
5963 && !info->shared
5964 && h != NULL
5965 && h->dynindx != -1
5966 && !h->non_got_ref
5967 && h->def_dynamic
5968 && !h->def_regular))
5969 {
5970 int skip;
5971
5972 #ifdef DEBUG
5973 fprintf (stderr, "ppc_elf_relocate_section needs to "
5974 "create relocation for %s\n",
5975 (h && h->root.root.string
5976 ? h->root.root.string : "<unknown>"));
5977 #endif
5978
5979 /* When generating a shared object, these relocations
5980 are copied into the output file to be resolved at run
5981 time. */
5982 if (sreloc == NULL)
5983 {
5984 const char *name;
5985
5986 name = (bfd_elf_string_from_elf_section
5987 (input_bfd,
5988 elf_elfheader (input_bfd)->e_shstrndx,
5989 elf_section_data (input_section)->rel_hdr.sh_name));
5990 if (name == NULL)
5991 return FALSE;
5992
5993 BFD_ASSERT (strncmp (name, ".rela", 5) == 0
5994 && strcmp (bfd_get_section_name (input_bfd,
5995 input_section),
5996 name + 5) == 0);
5997
5998 sreloc = bfd_get_section_by_name (htab->elf.dynobj, name);
5999 BFD_ASSERT (sreloc != NULL);
6000 }
6001
6002 skip = 0;
6003
6004 outrel.r_offset =
6005 _bfd_elf_section_offset (output_bfd, info, input_section,
6006 rel->r_offset);
6007 if (outrel.r_offset == (bfd_vma) -1
6008 || outrel.r_offset == (bfd_vma) -2)
6009 skip = (int) outrel.r_offset;
6010 outrel.r_offset += (input_section->output_section->vma
6011 + input_section->output_offset);
6012
6013 if (skip)
6014 memset (&outrel, 0, sizeof outrel);
6015 else if (!SYMBOL_REFERENCES_LOCAL (info, h))
6016 {
6017 unresolved_reloc = FALSE;
6018 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
6019 outrel.r_addend = rel->r_addend;
6020 }
6021 else
6022 {
6023 outrel.r_addend = relocation + rel->r_addend;
6024
6025 if (r_type == R_PPC_ADDR32)
6026 outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
6027 else
6028 {
6029 long indx;
6030
6031 if (bfd_is_abs_section (sec))
6032 indx = 0;
6033 else if (sec == NULL || sec->owner == NULL)
6034 {
6035 bfd_set_error (bfd_error_bad_value);
6036 return FALSE;
6037 }
6038 else
6039 {
6040 asection *osec;
6041
6042 /* We are turning this relocation into one
6043 against a section symbol. It would be
6044 proper to subtract the symbol's value,
6045 osec->vma, from the emitted reloc addend,
6046 but ld.so expects buggy relocs. */
6047 osec = sec->output_section;
6048 indx = elf_section_data (osec)->dynindx;
6049 BFD_ASSERT (indx > 0);
6050 #ifdef DEBUG
6051 if (indx <= 0)
6052 printf ("indx=%d section=%s flags=%08x name=%s\n",
6053 indx, osec->name, osec->flags,
6054 h->root.root.string);
6055 #endif
6056 }
6057
6058 outrel.r_info = ELF32_R_INFO (indx, r_type);
6059 }
6060 }
6061
6062 loc = sreloc->contents;
6063 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
6064 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
6065
6066 if (skip == -1)
6067 continue;
6068
6069 /* This reloc will be computed at runtime. We clear the memory
6070 so that it contains predictable value. */
6071 if (! skip
6072 && ((input_section->flags & SEC_ALLOC) != 0
6073 || ELF32_R_TYPE (outrel.r_info) != R_PPC_RELATIVE))
6074 {
6075 relocation = howto->pc_relative ? outrel.r_offset : 0;
6076 addend = 0;
6077 break;
6078 }
6079 }
6080 break;
6081
6082 case R_PPC_RELAX32PC_PLT:
6083 case R_PPC_RELAX32_PLT:
6084 {
6085 struct plt_entry *ent = find_plt_ent (h, got2, addend);
6086
6087 if (!htab->old_plt)
6088 relocation = (htab->glink->output_section->vma
6089 + htab->glink->output_offset
6090 + ent->glink_offset);
6091 else
6092 relocation = (htab->plt->output_section->vma
6093 + htab->plt->output_offset
6094 + ent->plt.offset);
6095 addend = 0;
6096 }
6097 if (r_type == R_PPC_RELAX32_PLT)
6098 goto relax32;
6099 /* Fall thru */
6100
6101 case R_PPC_RELAX32PC:
6102 relocation -= (input_section->output_section->vma
6103 + input_section->output_offset
6104 + rel->r_offset - 4);
6105 /* Fall thru */
6106
6107 case R_PPC_RELAX32:
6108 relax32:
6109 {
6110 unsigned long t0;
6111 unsigned long t1;
6112
6113 t0 = bfd_get_32 (output_bfd, contents + rel->r_offset);
6114 t1 = bfd_get_32 (output_bfd, contents + rel->r_offset + 4);
6115
6116 /* We're clearing the bits for R_PPC_ADDR16_HA
6117 and R_PPC_ADDR16_LO here. */
6118 t0 &= ~0xffff;
6119 t1 &= ~0xffff;
6120
6121 /* t0 is HA, t1 is LO */
6122 relocation += addend;
6123 t0 |= ((relocation + 0x8000) >> 16) & 0xffff;
6124 t1 |= relocation & 0xffff;
6125
6126 bfd_put_32 (output_bfd, t0, contents + rel->r_offset);
6127 bfd_put_32 (output_bfd, t1, contents + rel->r_offset + 4);
6128 }
6129 continue;
6130
6131 /* Indirect .sdata relocation. */
6132 case R_PPC_EMB_SDAI16:
6133 BFD_ASSERT (htab->sdata[0].section != NULL);
6134 relocation
6135 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[0],
6136 h, relocation, rel);
6137 break;
6138
6139 /* Indirect .sdata2 relocation. */
6140 case R_PPC_EMB_SDA2I16:
6141 BFD_ASSERT (htab->sdata[1].section != NULL);
6142 relocation
6143 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[1],
6144 h, relocation, rel);
6145 break;
6146
6147 /* Handle the TOC16 reloc. We want to use the offset within the .got
6148 section, not the actual VMA. This is appropriate when generating
6149 an embedded ELF object, for which the .got section acts like the
6150 AIX .toc section. */
6151 case R_PPC_TOC16: /* phony GOT16 relocations */
6152 BFD_ASSERT (sec != NULL);
6153 BFD_ASSERT (bfd_is_und_section (sec)
6154 || strcmp (bfd_get_section_name (abfd, sec), ".got") == 0
6155 || strcmp (bfd_get_section_name (abfd, sec), ".cgot") == 0);
6156
6157 addend -= sec->output_section->vma + sec->output_offset + 0x8000;
6158 break;
6159
6160 case R_PPC_PLTREL24:
6161 /* Relocation is to the entry for this symbol in the
6162 procedure linkage table. */
6163 {
6164 struct plt_entry *ent = find_plt_ent (h, got2, addend);
6165
6166 addend = 0;
6167 if (ent == NULL
6168 || htab->plt == NULL)
6169 {
6170 /* We didn't make a PLT entry for this symbol. This
6171 happens when statically linking PIC code, or when
6172 using -Bsymbolic. */
6173 break;
6174 }
6175
6176 unresolved_reloc = FALSE;
6177 if (!htab->old_plt)
6178 relocation = (htab->glink->output_section->vma
6179 + htab->glink->output_offset
6180 + ent->glink_offset);
6181 else
6182 relocation = (htab->plt->output_section->vma
6183 + htab->plt->output_offset
6184 + ent->plt.offset);
6185 }
6186 break;
6187
6188 /* Relocate against _SDA_BASE_. */
6189 case R_PPC_SDAREL16:
6190 {
6191 const char *name;
6192
6193 BFD_ASSERT (sec != NULL);
6194 name = bfd_get_section_name (abfd, sec->output_section);
6195 if (! ((strncmp (name, ".sdata", 6) == 0
6196 && (name[6] == 0 || name[6] == '.'))
6197 || (strncmp (name, ".sbss", 5) == 0
6198 && (name[5] == 0 || name[5] == '.'))))
6199 {
6200 (*_bfd_error_handler)
6201 (_("%B: the target (%s) of a %s relocation is "
6202 "in the wrong output section (%s)"),
6203 input_bfd,
6204 sym_name,
6205 howto->name,
6206 name);
6207 }
6208 addend -= htab->sdata[0].sym_val;
6209 }
6210 break;
6211
6212 /* Relocate against _SDA2_BASE_. */
6213 case R_PPC_EMB_SDA2REL:
6214 {
6215 const char *name;
6216
6217 BFD_ASSERT (sec != NULL);
6218 name = bfd_get_section_name (abfd, sec->output_section);
6219 if (! (strncmp (name, ".sdata2", 7) == 0
6220 || strncmp (name, ".sbss2", 6) == 0))
6221 {
6222 (*_bfd_error_handler)
6223 (_("%B: the target (%s) of a %s relocation is "
6224 "in the wrong output section (%s)"),
6225 input_bfd,
6226 sym_name,
6227 howto->name,
6228 name);
6229
6230 bfd_set_error (bfd_error_bad_value);
6231 ret = FALSE;
6232 continue;
6233 }
6234 addend -= htab->sdata[1].sym_val;
6235 }
6236 break;
6237
6238 /* Relocate against either _SDA_BASE_, _SDA2_BASE_, or 0. */
6239 case R_PPC_EMB_SDA21:
6240 case R_PPC_EMB_RELSDA:
6241 {
6242 const char *name;
6243 int reg;
6244
6245 BFD_ASSERT (sec != NULL);
6246 name = bfd_get_section_name (abfd, sec->output_section);
6247 if (((strncmp (name, ".sdata", 6) == 0
6248 && (name[6] == 0 || name[6] == '.'))
6249 || (strncmp (name, ".sbss", 5) == 0
6250 && (name[5] == 0 || name[5] == '.'))))
6251 {
6252 reg = 13;
6253 addend -= htab->sdata[0].sym_val;
6254 }
6255
6256 else if (strncmp (name, ".sdata2", 7) == 0
6257 || strncmp (name, ".sbss2", 6) == 0)
6258 {
6259 reg = 2;
6260 addend -= htab->sdata[1].sym_val;
6261 }
6262
6263 else if (strcmp (name, ".PPC.EMB.sdata0") == 0
6264 || strcmp (name, ".PPC.EMB.sbss0") == 0)
6265 {
6266 reg = 0;
6267 }
6268
6269 else
6270 {
6271 (*_bfd_error_handler)
6272 (_("%B: the target (%s) of a %s relocation is "
6273 "in the wrong output section (%s)"),
6274 input_bfd,
6275 sym_name,
6276 howto->name,
6277 name);
6278
6279 bfd_set_error (bfd_error_bad_value);
6280 ret = FALSE;
6281 continue;
6282 }
6283
6284 if (r_type == R_PPC_EMB_SDA21)
6285 { /* fill in register field */
6286 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
6287 insn = (insn & ~RA_REGISTER_MASK) | (reg << RA_REGISTER_SHIFT);
6288 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
6289 }
6290 }
6291 break;
6292
6293 /* Relocate against the beginning of the section. */
6294 case R_PPC_SECTOFF:
6295 case R_PPC_SECTOFF_LO:
6296 case R_PPC_SECTOFF_HI:
6297 case R_PPC_SECTOFF_HA:
6298 BFD_ASSERT (sec != NULL);
6299 addend -= sec->output_section->vma;
6300 break;
6301
6302 /* Negative relocations. */
6303 case R_PPC_EMB_NADDR32:
6304 case R_PPC_EMB_NADDR16:
6305 case R_PPC_EMB_NADDR16_LO:
6306 case R_PPC_EMB_NADDR16_HI:
6307 case R_PPC_EMB_NADDR16_HA:
6308 addend -= 2 * relocation;
6309 break;
6310
6311 case R_PPC_COPY:
6312 case R_PPC_GLOB_DAT:
6313 case R_PPC_JMP_SLOT:
6314 case R_PPC_RELATIVE:
6315 case R_PPC_PLT32:
6316 case R_PPC_PLTREL32:
6317 case R_PPC_PLT16_LO:
6318 case R_PPC_PLT16_HI:
6319 case R_PPC_PLT16_HA:
6320 case R_PPC_ADDR30:
6321 case R_PPC_EMB_RELSEC16:
6322 case R_PPC_EMB_RELST_LO:
6323 case R_PPC_EMB_RELST_HI:
6324 case R_PPC_EMB_RELST_HA:
6325 case R_PPC_EMB_BIT_FLD:
6326 (*_bfd_error_handler)
6327 (_("%B: relocation %s is not yet supported for symbol %s."),
6328 input_bfd,
6329 howto->name,
6330 sym_name);
6331
6332 bfd_set_error (bfd_error_invalid_operation);
6333 ret = FALSE;
6334 continue;
6335 }
6336
6337 /* Do any further special processing. */
6338 switch (r_type)
6339 {
6340 default:
6341 break;
6342
6343 case R_PPC_ADDR16_HA:
6344 case R_PPC_REL16_HA:
6345 case R_PPC_GOT16_HA:
6346 case R_PPC_PLT16_HA:
6347 case R_PPC_SECTOFF_HA:
6348 case R_PPC_TPREL16_HA:
6349 case R_PPC_DTPREL16_HA:
6350 case R_PPC_GOT_TLSGD16_HA:
6351 case R_PPC_GOT_TLSLD16_HA:
6352 case R_PPC_GOT_TPREL16_HA:
6353 case R_PPC_GOT_DTPREL16_HA:
6354 case R_PPC_EMB_NADDR16_HA:
6355 case R_PPC_EMB_RELST_HA:
6356 /* It's just possible that this symbol is a weak symbol
6357 that's not actually defined anywhere. In that case,
6358 'sec' would be NULL, and we should leave the symbol
6359 alone (it will be set to zero elsewhere in the link). */
6360 if (sec != NULL)
6361 /* Add 0x10000 if sign bit in 0:15 is set.
6362 Bits 0:15 are not used. */
6363 addend += 0x8000;
6364 break;
6365 }
6366
6367 #ifdef DEBUG
6368 fprintf (stderr, "\ttype = %s (%d), name = %s, symbol index = %ld, "
6369 "offset = %ld, addend = %ld\n",
6370 howto->name,
6371 (int) r_type,
6372 sym_name,
6373 r_symndx,
6374 (long) rel->r_offset,
6375 (long) addend);
6376 #endif
6377
6378 if (unresolved_reloc
6379 && !((input_section->flags & SEC_DEBUGGING) != 0
6380 && h->def_dynamic))
6381 {
6382 (*_bfd_error_handler)
6383 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
6384 input_bfd,
6385 input_section,
6386 (long) rel->r_offset,
6387 howto->name,
6388 sym_name);
6389 ret = FALSE;
6390 }
6391
6392 r = _bfd_final_link_relocate (howto,
6393 input_bfd,
6394 input_section,
6395 contents,
6396 rel->r_offset,
6397 relocation,
6398 addend);
6399
6400 if (r != bfd_reloc_ok)
6401 {
6402 if (r == bfd_reloc_overflow)
6403 {
6404 if (warned)
6405 continue;
6406 if (h != NULL
6407 && h->root.type == bfd_link_hash_undefweak
6408 && howto->pc_relative)
6409 {
6410 /* Assume this is a call protected by other code that
6411 detect the symbol is undefined. If this is the case,
6412 we can safely ignore the overflow. If not, the
6413 program is hosed anyway, and a little warning isn't
6414 going to help. */
6415
6416 continue;
6417 }
6418
6419 if (! (*info->callbacks->reloc_overflow) (info,
6420 (h ? &h->root : NULL),
6421 sym_name,
6422 howto->name,
6423 rel->r_addend,
6424 input_bfd,
6425 input_section,
6426 rel->r_offset))
6427 return FALSE;
6428 }
6429 else
6430 {
6431 (*_bfd_error_handler)
6432 (_("%B(%A+0x%lx): %s reloc against `%s': error %d"),
6433 input_bfd, input_section,
6434 (long) rel->r_offset, howto->name, sym_name, (int) r);
6435 ret = FALSE;
6436 }
6437 }
6438 }
6439
6440 #ifdef DEBUG
6441 fprintf (stderr, "\n");
6442 #endif
6443
6444 return ret;
6445 }
6446 \f
6447 #define PPC_LO(v) ((v) & 0xffff)
6448 #define PPC_HI(v) (((v) >> 16) & 0xffff)
6449 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
6450
6451 /* Finish up dynamic symbol handling. We set the contents of various
6452 dynamic sections here. */
6453
6454 static bfd_boolean
6455 ppc_elf_finish_dynamic_symbol (bfd *output_bfd,
6456 struct bfd_link_info *info,
6457 struct elf_link_hash_entry *h,
6458 Elf_Internal_Sym *sym)
6459 {
6460 struct ppc_elf_link_hash_table *htab;
6461 struct plt_entry *ent;
6462 bfd_boolean doneone;
6463
6464 #ifdef DEBUG
6465 fprintf (stderr, "ppc_elf_finish_dynamic_symbol called for %s",
6466 h->root.root.string);
6467 #endif
6468
6469 htab = ppc_elf_hash_table (info);
6470 BFD_ASSERT (htab->elf.dynobj != NULL);
6471
6472 doneone = FALSE;
6473 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
6474 if (ent->plt.offset != (bfd_vma) -1)
6475 {
6476 if (!doneone)
6477 {
6478 Elf_Internal_Rela rela;
6479 bfd_byte *loc;
6480 bfd_vma reloc_index;
6481
6482 /* This symbol has an entry in the procedure linkage table.
6483 Set it up. */
6484 if (htab->old_plt)
6485 {
6486 /* We don't need to fill in the .plt. The ppc dynamic
6487 linker will fill it in. */
6488 }
6489 else
6490 {
6491 bfd_vma val = (htab->glink_pltresolve + ent->plt.offset
6492 + htab->glink->output_section->vma
6493 + htab->glink->output_offset);
6494 bfd_put_32 (output_bfd, val,
6495 htab->plt->contents + ent->plt.offset);
6496 }
6497
6498 /* Fill in the entry in the .rela.plt section. */
6499 rela.r_offset = (htab->plt->output_section->vma
6500 + htab->plt->output_offset
6501 + ent->plt.offset);
6502 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_JMP_SLOT);
6503 rela.r_addend = 0;
6504
6505 if (!htab->old_plt)
6506 reloc_index = ent->plt.offset / 4;
6507 else
6508 {
6509 reloc_index = ((ent->plt.offset - PLT_INITIAL_ENTRY_SIZE)
6510 / PLT_SLOT_SIZE);
6511 if (reloc_index > PLT_NUM_SINGLE_ENTRIES)
6512 reloc_index -= (reloc_index - PLT_NUM_SINGLE_ENTRIES) / 2;
6513 }
6514 loc = (htab->relplt->contents
6515 + reloc_index * sizeof (Elf32_External_Rela));
6516 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
6517
6518 if (!h->def_regular)
6519 {
6520 /* Mark the symbol as undefined, rather than as defined in
6521 the .plt section. Leave the value alone. */
6522 sym->st_shndx = SHN_UNDEF;
6523 /* If the symbol is weak, we do need to clear the value.
6524 Otherwise, the PLT entry would provide a definition for
6525 the symbol even if the symbol wasn't defined anywhere,
6526 and so the symbol would never be NULL. */
6527 if (!h->ref_regular_nonweak)
6528 sym->st_value = 0;
6529 }
6530 doneone = TRUE;
6531 }
6532
6533 if (!htab->old_plt)
6534 {
6535 bfd_vma plt;
6536 unsigned char *p;
6537
6538 plt = (ent->plt.offset
6539 + htab->plt->output_section->vma
6540 + htab->plt->output_offset);
6541 p = (unsigned char *) htab->glink->contents + ent->glink_offset;
6542
6543 if (info->shared || info->pie)
6544 {
6545 bfd_vma got = 0;
6546
6547 if (ent->addend >= 32768)
6548 got = (ent->addend
6549 + ent->sec->output_section->vma
6550 + ent->sec->output_offset);
6551 else if (htab->elf.hgot != NULL)
6552 got = (htab->elf.hgot->root.u.def.value
6553 + htab->elf.hgot->root.u.def.section->output_section->vma
6554 + htab->elf.hgot->root.u.def.section->output_offset);
6555
6556 plt -= got;
6557
6558 if (plt + 0x8000 < 0x10000)
6559 {
6560 bfd_put_32 (output_bfd, LWZ_11_30 + PPC_LO (plt), p);
6561 p += 4;
6562 bfd_put_32 (output_bfd, MTCTR_11, p);
6563 p += 4;
6564 bfd_put_32 (output_bfd, BCTR, p);
6565 p += 4;
6566 bfd_put_32 (output_bfd, NOP, p);
6567 p += 4;
6568 }
6569 else
6570 {
6571 bfd_put_32 (output_bfd, ADDIS_11_30 + PPC_HA (plt), p);
6572 p += 4;
6573 bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
6574 p += 4;
6575 bfd_put_32 (output_bfd, MTCTR_11, p);
6576 p += 4;
6577 bfd_put_32 (output_bfd, BCTR, p);
6578 p += 4;
6579 }
6580 }
6581 else
6582 {
6583 bfd_put_32 (output_bfd, LIS_11 + PPC_HA (plt), p);
6584 p += 4;
6585 bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
6586 p += 4;
6587 bfd_put_32 (output_bfd, MTCTR_11, p);
6588 p += 4;
6589 bfd_put_32 (output_bfd, BCTR, p);
6590 p += 4;
6591
6592 /* We only need one non-PIC glink stub. */
6593 break;
6594 }
6595 }
6596 else
6597 break;
6598 }
6599
6600 if (h->needs_copy)
6601 {
6602 asection *s;
6603 Elf_Internal_Rela rela;
6604 bfd_byte *loc;
6605
6606 /* This symbols needs a copy reloc. Set it up. */
6607
6608 #ifdef DEBUG
6609 fprintf (stderr, ", copy");
6610 #endif
6611
6612 BFD_ASSERT (h->dynindx != -1);
6613
6614 if (ppc_elf_hash_entry (h)->has_sda_refs)
6615 s = htab->relsbss;
6616 else
6617 s = htab->relbss;
6618 BFD_ASSERT (s != NULL);
6619
6620 rela.r_offset = (h->root.u.def.value
6621 + h->root.u.def.section->output_section->vma
6622 + h->root.u.def.section->output_offset);
6623 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_COPY);
6624 rela.r_addend = 0;
6625 loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
6626 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
6627 }
6628
6629 #ifdef DEBUG
6630 fprintf (stderr, "\n");
6631 #endif
6632
6633 /* Mark some specially defined symbols as absolute. */
6634 if (h == htab->elf.hgot
6635 || strcmp (h->root.root.string, "_DYNAMIC") == 0
6636 || strcmp (h->root.root.string, "_PROCEDURE_LINKAGE_TABLE_") == 0)
6637 sym->st_shndx = SHN_ABS;
6638
6639 return TRUE;
6640 }
6641 \f
6642 static enum elf_reloc_type_class
6643 ppc_elf_reloc_type_class (const Elf_Internal_Rela *rela)
6644 {
6645 switch (ELF32_R_TYPE (rela->r_info))
6646 {
6647 case R_PPC_RELATIVE:
6648 return reloc_class_relative;
6649 case R_PPC_REL24:
6650 case R_PPC_ADDR24:
6651 case R_PPC_JMP_SLOT:
6652 return reloc_class_plt;
6653 case R_PPC_COPY:
6654 return reloc_class_copy;
6655 default:
6656 return reloc_class_normal;
6657 }
6658 }
6659 \f
6660 /* Finish up the dynamic sections. */
6661
6662 static bfd_boolean
6663 ppc_elf_finish_dynamic_sections (bfd *output_bfd,
6664 struct bfd_link_info *info)
6665 {
6666 asection *sdyn;
6667 struct ppc_elf_link_hash_table *htab;
6668 bfd_vma got;
6669
6670 #ifdef DEBUG
6671 fprintf (stderr, "ppc_elf_finish_dynamic_sections called\n");
6672 #endif
6673
6674 htab = ppc_elf_hash_table (info);
6675 sdyn = bfd_get_section_by_name (htab->elf.dynobj, ".dynamic");
6676
6677 got = 0;
6678 if (htab->elf.hgot != NULL)
6679 got = (htab->elf.hgot->root.u.def.value
6680 + htab->elf.hgot->root.u.def.section->output_section->vma
6681 + htab->elf.hgot->root.u.def.section->output_offset);
6682
6683 if (htab->elf.dynamic_sections_created)
6684 {
6685 Elf32_External_Dyn *dyncon, *dynconend;
6686
6687 BFD_ASSERT (htab->plt != NULL && sdyn != NULL);
6688
6689 dyncon = (Elf32_External_Dyn *) sdyn->contents;
6690 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
6691 for (; dyncon < dynconend; dyncon++)
6692 {
6693 Elf_Internal_Dyn dyn;
6694 asection *s;
6695
6696 bfd_elf32_swap_dyn_in (htab->elf.dynobj, dyncon, &dyn);
6697
6698 switch (dyn.d_tag)
6699 {
6700 case DT_PLTGOT:
6701 s = htab->plt;
6702 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
6703 break;
6704
6705 case DT_PLTRELSZ:
6706 dyn.d_un.d_val = htab->relplt->size;
6707 break;
6708
6709 case DT_JMPREL:
6710 s = htab->relplt;
6711 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
6712 break;
6713
6714 case DT_PPC_GOT:
6715 dyn.d_un.d_ptr = got;
6716 break;
6717
6718 default:
6719 continue;
6720 }
6721
6722 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
6723 }
6724 }
6725
6726 /* Add a blrl instruction at _GLOBAL_OFFSET_TABLE_-4 so that a function can
6727 easily find the address of the _GLOBAL_OFFSET_TABLE_. */
6728 if (htab->got != NULL)
6729 {
6730 unsigned char *p = htab->got->contents;
6731 bfd_vma val;
6732
6733 p += elf_hash_table (info)->hgot->root.u.def.value;
6734 if (htab->old_plt)
6735 bfd_put_32 (output_bfd, 0x4e800021 /* blrl */, p - 4);
6736
6737 val = 0;
6738 if (sdyn != NULL)
6739 val = sdyn->output_section->vma + sdyn->output_offset;
6740 bfd_put_32 (output_bfd, val, p);
6741
6742 elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 4;
6743 }
6744
6745 if (htab->glink != NULL && htab->glink->contents != NULL)
6746 {
6747 unsigned char *p;
6748 unsigned char *endp;
6749 bfd_vma res0;
6750 unsigned int i;
6751
6752 /*
6753 * PIC glink code is the following:
6754 *
6755 * # ith PLT code stub.
6756 * addis 11,30,(plt+(i-1)*4-got)@ha
6757 * lwz 11,(plt+(i-1)*4-got)@l(11)
6758 * mtctr 11
6759 * bctr
6760 *
6761 * # A table of branches, one for each plt entry.
6762 * # The idea is that the plt call stub loads ctr (and r11) with these
6763 * # addresses, so (r11 - res_0) gives the plt index * 4.
6764 * res_0: b PLTresolve
6765 * res_1: b PLTresolve
6766 * .
6767 * # Some number of entries towards the end can be nops
6768 * res_n_m3: nop
6769 * res_n_m2: nop
6770 * res_n_m1:
6771 *
6772 * PLTresolve:
6773 * addis 11,11,(1f-res_0)@ha
6774 * mflr 0
6775 * bcl 20,31,1f
6776 * 1: addi 11,11,(1b-res_0)@l
6777 * mflr 12
6778 * mtlr 0
6779 * sub 11,11,12 # r11 = index * 4
6780 * addis 12,12,(got+4-1b)@ha
6781 * lwz 0,(got+4-1b)@l(12) # got[1] address of dl_runtime_resolve
6782 * lwz 12,(got+8-1b)@l(12) # got[2] contains the map address
6783 * mtctr 0
6784 * add 0,11,11
6785 * add 11,0,11 # r11 = index * 12 = reloc offset.
6786 * bctr
6787 */
6788 static const unsigned int pic_plt_resolve[] =
6789 {
6790 ADDIS_11_11,
6791 MFLR_0,
6792 BCL_20_31,
6793 ADDI_11_11,
6794 MFLR_12,
6795 MTLR_0,
6796 SUB_11_11_12,
6797 ADDIS_12_12,
6798 LWZ_0_12,
6799 LWZ_12_12,
6800 MTCTR_0,
6801 ADD_0_11_11,
6802 ADD_11_0_11,
6803 BCTR,
6804 NOP,
6805 NOP
6806 };
6807
6808 static const unsigned int plt_resolve[] =
6809 {
6810 LIS_12,
6811 ADDIS_11_11,
6812 LWZ_0_12,
6813 ADDI_11_11,
6814 MTCTR_0,
6815 ADD_0_11_11,
6816 LWZ_12_12,
6817 ADD_11_0_11,
6818 BCTR,
6819 NOP,
6820 NOP,
6821 NOP,
6822 NOP,
6823 NOP,
6824 NOP,
6825 NOP
6826 };
6827
6828 if (ARRAY_SIZE (pic_plt_resolve) != GLINK_PLTRESOLVE / 4)
6829 abort ();
6830 if (ARRAY_SIZE (plt_resolve) != GLINK_PLTRESOLVE / 4)
6831 abort ();
6832
6833 /* Build the branch table, one for each plt entry (less one),
6834 and perhaps some padding. */
6835 p = htab->glink->contents;
6836 p += htab->glink_pltresolve;
6837 endp = htab->glink->contents;
6838 endp += htab->glink->size - GLINK_PLTRESOLVE;
6839 while (p < endp - 8 * 4)
6840 {
6841 bfd_put_32 (output_bfd, B + endp - p, p);
6842 p += 4;
6843 }
6844 while (p < endp)
6845 {
6846 bfd_put_32 (output_bfd, NOP, p);
6847 p += 4;
6848 }
6849
6850 res0 = (htab->glink_pltresolve
6851 + htab->glink->output_section->vma
6852 + htab->glink->output_offset);
6853
6854 /* Last comes the PLTresolve stub. */
6855 if (info->shared || info->pie)
6856 {
6857 bfd_vma bcl;
6858
6859 for (i = 0; i < ARRAY_SIZE (pic_plt_resolve); i++)
6860 {
6861 bfd_put_32 (output_bfd, pic_plt_resolve[i], p);
6862 p += 4;
6863 }
6864 p -= 4 * ARRAY_SIZE (pic_plt_resolve);
6865
6866 bcl = (htab->glink->size - GLINK_PLTRESOLVE + 3*4
6867 + htab->glink->output_section->vma
6868 + htab->glink->output_offset);
6869
6870 bfd_put_32 (output_bfd,
6871 ADDIS_11_11 + PPC_HA (bcl - res0), p + 0*4);
6872 bfd_put_32 (output_bfd,
6873 ADDI_11_11 + PPC_LO (bcl - res0), p + 3*4);
6874 bfd_put_32 (output_bfd,
6875 ADDIS_12_12 + PPC_HA (got + 4 - bcl), p + 7*4);
6876 if (PPC_HA (got + 4 - bcl) == PPC_HA (got + 8 - bcl))
6877 {
6878 bfd_put_32 (output_bfd,
6879 LWZ_0_12 + PPC_LO (got + 4 - bcl), p + 8*4);
6880 bfd_put_32 (output_bfd,
6881 LWZ_12_12 + PPC_LO (got + 8 - bcl), p + 9*4);
6882 }
6883 else
6884 {
6885 bfd_put_32 (output_bfd,
6886 LWZU_0_12 + PPC_LO (got + 4 - bcl), p + 8*4);
6887 bfd_put_32 (output_bfd,
6888 LWZ_12_12 + 4, p + 9*4);
6889 }
6890 }
6891 else
6892 {
6893 for (i = 0; i < ARRAY_SIZE (plt_resolve); i++)
6894 {
6895 bfd_put_32 (output_bfd, plt_resolve[i], p);
6896 p += 4;
6897 }
6898 p -= 4 * ARRAY_SIZE (plt_resolve);
6899
6900 bfd_put_32 (output_bfd,
6901 LIS_12 + PPC_HA (got + 4), p + 0*4);
6902 bfd_put_32 (output_bfd,
6903 ADDIS_11_11 + PPC_HA (-res0), p + 1*4);
6904 bfd_put_32 (output_bfd,
6905 ADDI_11_11 + PPC_LO (-res0), p + 3*4);
6906 if (PPC_HA (got + 4) == PPC_HA (got + 8))
6907 {
6908 bfd_put_32 (output_bfd,
6909 LWZ_0_12 + PPC_LO (got + 4), p + 2*4);
6910 bfd_put_32 (output_bfd,
6911 LWZ_12_12 + PPC_LO (got + 8), p + 6*4);
6912 }
6913 else
6914 {
6915 bfd_put_32 (output_bfd,
6916 LWZU_0_12 + PPC_LO (got + 4), p + 2*4);
6917 bfd_put_32 (output_bfd,
6918 LWZ_12_12 + 4, p + 6*4);
6919 }
6920 }
6921 }
6922
6923 return TRUE;
6924 }
6925 \f
6926 #define TARGET_LITTLE_SYM bfd_elf32_powerpcle_vec
6927 #define TARGET_LITTLE_NAME "elf32-powerpcle"
6928 #define TARGET_BIG_SYM bfd_elf32_powerpc_vec
6929 #define TARGET_BIG_NAME "elf32-powerpc"
6930 #define ELF_ARCH bfd_arch_powerpc
6931 #define ELF_MACHINE_CODE EM_PPC
6932 #ifdef __QNXTARGET__
6933 #define ELF_MAXPAGESIZE 0x1000
6934 #else
6935 #define ELF_MAXPAGESIZE 0x10000
6936 #endif
6937 #define ELF_MINPAGESIZE 0x1000
6938 #define elf_info_to_howto ppc_elf_info_to_howto
6939
6940 #ifdef EM_CYGNUS_POWERPC
6941 #define ELF_MACHINE_ALT1 EM_CYGNUS_POWERPC
6942 #endif
6943
6944 #ifdef EM_PPC_OLD
6945 #define ELF_MACHINE_ALT2 EM_PPC_OLD
6946 #endif
6947
6948 #define elf_backend_plt_not_loaded 1
6949 #define elf_backend_can_gc_sections 1
6950 #define elf_backend_can_refcount 1
6951 #define elf_backend_rela_normal 1
6952
6953 #define bfd_elf32_mkobject ppc_elf_mkobject
6954 #define bfd_elf32_bfd_merge_private_bfd_data ppc_elf_merge_private_bfd_data
6955 #define bfd_elf32_bfd_relax_section ppc_elf_relax_section
6956 #define bfd_elf32_bfd_reloc_type_lookup ppc_elf_reloc_type_lookup
6957 #define bfd_elf32_bfd_set_private_flags ppc_elf_set_private_flags
6958 #define bfd_elf32_bfd_link_hash_table_create ppc_elf_link_hash_table_create
6959
6960 #define elf_backend_object_p ppc_elf_object_p
6961 #define elf_backend_gc_mark_hook ppc_elf_gc_mark_hook
6962 #define elf_backend_gc_sweep_hook ppc_elf_gc_sweep_hook
6963 #define elf_backend_section_from_shdr ppc_elf_section_from_shdr
6964 #define elf_backend_relocate_section ppc_elf_relocate_section
6965 #define elf_backend_create_dynamic_sections ppc_elf_create_dynamic_sections
6966 #define elf_backend_check_relocs ppc_elf_check_relocs
6967 #define elf_backend_copy_indirect_symbol ppc_elf_copy_indirect_symbol
6968 #define elf_backend_adjust_dynamic_symbol ppc_elf_adjust_dynamic_symbol
6969 #define elf_backend_add_symbol_hook ppc_elf_add_symbol_hook
6970 #define elf_backend_size_dynamic_sections ppc_elf_size_dynamic_sections
6971 #define elf_backend_finish_dynamic_symbol ppc_elf_finish_dynamic_symbol
6972 #define elf_backend_finish_dynamic_sections ppc_elf_finish_dynamic_sections
6973 #define elf_backend_fake_sections ppc_elf_fake_sections
6974 #define elf_backend_additional_program_headers ppc_elf_additional_program_headers
6975 #define elf_backend_grok_prstatus ppc_elf_grok_prstatus
6976 #define elf_backend_grok_psinfo ppc_elf_grok_psinfo
6977 #define elf_backend_reloc_type_class ppc_elf_reloc_type_class
6978 #define elf_backend_begin_write_processing ppc_elf_begin_write_processing
6979 #define elf_backend_final_write_processing ppc_elf_final_write_processing
6980 #define elf_backend_write_section ppc_elf_write_section
6981 #define elf_backend_special_sections ppc_elf_special_sections
6982 #define elf_backend_plt_sym_val ppc_elf_plt_sym_val
6983
6984 #include "elf32-target.h"
GDB Binutils - Deliverables
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