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bfd/
[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, 2006, 2007, 2008, 2009, 2010, 2011, 2012
4 Free Software Foundation, Inc.
5 Written by Ian Lance Taylor, Cygnus Support.
6
7 This file is part of BFD, the Binary File Descriptor library.
8
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 3 of the License, or
12 (at your option) any later version.
13
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
18
19 You should have received a copy of the GNU General Public License
20 along with this program; if not, write to the
21 Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor,
22 Boston, MA 02110-1301, USA. */
23
24
25 /* This file is based on a preliminary PowerPC ELF ABI. The
26 information may not match the final PowerPC ELF ABI. It includes
27 suggestions from the in-progress Embedded PowerPC ABI, and that
28 information may also not match. */
29
30 #include "sysdep.h"
31 #include <stdarg.h>
32 #include "bfd.h"
33 #include "bfdlink.h"
34 #include "libbfd.h"
35 #include "elf-bfd.h"
36 #include "elf/ppc.h"
37 #include "elf32-ppc.h"
38 #include "elf-vxworks.h"
39 #include "dwarf2.h"
40
41 typedef enum split16_format_type
42 {
43 split16a_type = 0,
44 split16d_type
45 }
46 split16_format_type;
47
48 /* RELA relocations are used here. */
49
50 static bfd_reloc_status_type ppc_elf_addr16_ha_reloc
51 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
52 static bfd_reloc_status_type ppc_elf_unhandled_reloc
53 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
54 static void ppc_elf_vle_split16
55 (bfd *, bfd_byte *, bfd_vma, bfd_vma, split16_format_type);
56
57 /* Branch prediction bit for branch taken relocs. */
58 #define BRANCH_PREDICT_BIT 0x200000
59 /* Mask to set RA in memory instructions. */
60 #define RA_REGISTER_MASK 0x001f0000
61 /* Value to shift register by to insert RA. */
62 #define RA_REGISTER_SHIFT 16
63
64 /* The name of the dynamic interpreter. This is put in the .interp
65 section. */
66 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
67
68 /* For old-style PLT. */
69 /* The number of single-slot PLT entries (the rest use two slots). */
70 #define PLT_NUM_SINGLE_ENTRIES 8192
71
72 /* For new-style .glink and .plt. */
73 #define GLINK_PLTRESOLVE 16*4
74 #define GLINK_ENTRY_SIZE 4*4
75 #define TLS_GET_ADDR_GLINK_SIZE 12*4
76
77 /* VxWorks uses its own plt layout, filled in by the static linker. */
78
79 /* The standard VxWorks PLT entry. */
80 #define VXWORKS_PLT_ENTRY_SIZE 32
81 static const bfd_vma ppc_elf_vxworks_plt_entry
82 [VXWORKS_PLT_ENTRY_SIZE / 4] =
83 {
84 0x3d800000, /* lis r12,0 */
85 0x818c0000, /* lwz r12,0(r12) */
86 0x7d8903a6, /* mtctr r12 */
87 0x4e800420, /* bctr */
88 0x39600000, /* li r11,0 */
89 0x48000000, /* b 14 <.PLT0resolve+0x4> */
90 0x60000000, /* nop */
91 0x60000000, /* nop */
92 };
93 static const bfd_vma ppc_elf_vxworks_pic_plt_entry
94 [VXWORKS_PLT_ENTRY_SIZE / 4] =
95 {
96 0x3d9e0000, /* addis r12,r30,0 */
97 0x818c0000, /* lwz r12,0(r12) */
98 0x7d8903a6, /* mtctr r12 */
99 0x4e800420, /* bctr */
100 0x39600000, /* li r11,0 */
101 0x48000000, /* b 14 <.PLT0resolve+0x4> 14: R_PPC_REL24 .PLTresolve */
102 0x60000000, /* nop */
103 0x60000000, /* nop */
104 };
105
106 /* The initial VxWorks PLT entry. */
107 #define VXWORKS_PLT_INITIAL_ENTRY_SIZE 32
108 static const bfd_vma ppc_elf_vxworks_plt0_entry
109 [VXWORKS_PLT_INITIAL_ENTRY_SIZE / 4] =
110 {
111 0x3d800000, /* lis r12,0 */
112 0x398c0000, /* addi r12,r12,0 */
113 0x800c0008, /* lwz r0,8(r12) */
114 0x7c0903a6, /* mtctr r0 */
115 0x818c0004, /* lwz r12,4(r12) */
116 0x4e800420, /* bctr */
117 0x60000000, /* nop */
118 0x60000000, /* nop */
119 };
120 static const bfd_vma ppc_elf_vxworks_pic_plt0_entry
121 [VXWORKS_PLT_INITIAL_ENTRY_SIZE / 4] =
122 {
123 0x819e0008, /* lwz r12,8(r30) */
124 0x7d8903a6, /* mtctr r12 */
125 0x819e0004, /* lwz r12,4(r30) */
126 0x4e800420, /* bctr */
127 0x60000000, /* nop */
128 0x60000000, /* nop */
129 0x60000000, /* nop */
130 0x60000000, /* nop */
131 };
132
133 /* For executables, we have some additional relocations in
134 .rela.plt.unloaded, for the kernel loader. */
135
136 /* The number of non-JMP_SLOT relocations per PLT0 slot. */
137 #define VXWORKS_PLT_NON_JMP_SLOT_RELOCS 3
138 /* The number of relocations in the PLTResolve slot. */
139 #define VXWORKS_PLTRESOLVE_RELOCS 2
140 /* The number of relocations in the PLTResolve slot when when creating
141 a shared library. */
142 #define VXWORKS_PLTRESOLVE_RELOCS_SHLIB 0
143
144 /* Some instructions. */
145 #define ADDIS_11_11 0x3d6b0000
146 #define ADDIS_11_30 0x3d7e0000
147 #define ADDIS_12_12 0x3d8c0000
148 #define ADDI_11_11 0x396b0000
149 #define ADD_0_11_11 0x7c0b5a14
150 #define ADD_3_12_2 0x7c6c1214
151 #define ADD_11_0_11 0x7d605a14
152 #define B 0x48000000
153 #define BCL_20_31 0x429f0005
154 #define BCTR 0x4e800420
155 #define BEQLR 0x4d820020
156 #define CMPWI_11_0 0x2c0b0000
157 #define LIS_11 0x3d600000
158 #define LIS_12 0x3d800000
159 #define LWZU_0_12 0x840c0000
160 #define LWZ_0_12 0x800c0000
161 #define LWZ_11_3 0x81630000
162 #define LWZ_11_11 0x816b0000
163 #define LWZ_11_30 0x817e0000
164 #define LWZ_12_3 0x81830000
165 #define LWZ_12_12 0x818c0000
166 #define MR_0_3 0x7c601b78
167 #define MR_3_0 0x7c030378
168 #define MFLR_0 0x7c0802a6
169 #define MFLR_12 0x7d8802a6
170 #define MTCTR_0 0x7c0903a6
171 #define MTCTR_11 0x7d6903a6
172 #define MTLR_0 0x7c0803a6
173 #define NOP 0x60000000
174 #define SUB_11_11_12 0x7d6c5850
175
176 /* Offset of tp and dtp pointers from start of TLS block. */
177 #define TP_OFFSET 0x7000
178 #define DTP_OFFSET 0x8000
179
180 /* The value of a defined global symbol. */
181 #define SYM_VAL(SYM) \
182 ((SYM)->root.u.def.section->output_section->vma \
183 + (SYM)->root.u.def.section->output_offset \
184 + (SYM)->root.u.def.value)
185 \f
186 static reloc_howto_type *ppc_elf_howto_table[R_PPC_max];
187
188 static reloc_howto_type ppc_elf_howto_raw[] = {
189 /* This reloc does nothing. */
190 HOWTO (R_PPC_NONE, /* type */
191 0, /* rightshift */
192 2, /* size (0 = byte, 1 = short, 2 = long) */
193 32, /* bitsize */
194 FALSE, /* pc_relative */
195 0, /* bitpos */
196 complain_overflow_bitfield, /* complain_on_overflow */
197 bfd_elf_generic_reloc, /* special_function */
198 "R_PPC_NONE", /* name */
199 FALSE, /* partial_inplace */
200 0, /* src_mask */
201 0, /* dst_mask */
202 FALSE), /* pcrel_offset */
203
204 /* A standard 32 bit relocation. */
205 HOWTO (R_PPC_ADDR32, /* type */
206 0, /* rightshift */
207 2, /* size (0 = byte, 1 = short, 2 = long) */
208 32, /* bitsize */
209 FALSE, /* pc_relative */
210 0, /* bitpos */
211 complain_overflow_bitfield, /* complain_on_overflow */
212 bfd_elf_generic_reloc, /* special_function */
213 "R_PPC_ADDR32", /* name */
214 FALSE, /* partial_inplace */
215 0, /* src_mask */
216 0xffffffff, /* dst_mask */
217 FALSE), /* pcrel_offset */
218
219 /* An absolute 26 bit branch; the lower two bits must be zero.
220 FIXME: we don't check that, we just clear them. */
221 HOWTO (R_PPC_ADDR24, /* type */
222 0, /* rightshift */
223 2, /* size (0 = byte, 1 = short, 2 = long) */
224 26, /* bitsize */
225 FALSE, /* pc_relative */
226 0, /* bitpos */
227 complain_overflow_bitfield, /* complain_on_overflow */
228 bfd_elf_generic_reloc, /* special_function */
229 "R_PPC_ADDR24", /* name */
230 FALSE, /* partial_inplace */
231 0, /* src_mask */
232 0x3fffffc, /* dst_mask */
233 FALSE), /* pcrel_offset */
234
235 /* A standard 16 bit relocation. */
236 HOWTO (R_PPC_ADDR16, /* type */
237 0, /* rightshift */
238 1, /* size (0 = byte, 1 = short, 2 = long) */
239 16, /* bitsize */
240 FALSE, /* pc_relative */
241 0, /* bitpos */
242 complain_overflow_bitfield, /* complain_on_overflow */
243 bfd_elf_generic_reloc, /* special_function */
244 "R_PPC_ADDR16", /* name */
245 FALSE, /* partial_inplace */
246 0, /* src_mask */
247 0xffff, /* dst_mask */
248 FALSE), /* pcrel_offset */
249
250 /* A 16 bit relocation without overflow. */
251 HOWTO (R_PPC_ADDR16_LO, /* type */
252 0, /* rightshift */
253 1, /* size (0 = byte, 1 = short, 2 = long) */
254 16, /* bitsize */
255 FALSE, /* pc_relative */
256 0, /* bitpos */
257 complain_overflow_dont,/* complain_on_overflow */
258 bfd_elf_generic_reloc, /* special_function */
259 "R_PPC_ADDR16_LO", /* name */
260 FALSE, /* partial_inplace */
261 0, /* src_mask */
262 0xffff, /* dst_mask */
263 FALSE), /* pcrel_offset */
264
265 /* The high order 16 bits of an address. */
266 HOWTO (R_PPC_ADDR16_HI, /* type */
267 16, /* rightshift */
268 1, /* size (0 = byte, 1 = short, 2 = long) */
269 16, /* bitsize */
270 FALSE, /* pc_relative */
271 0, /* bitpos */
272 complain_overflow_dont, /* complain_on_overflow */
273 bfd_elf_generic_reloc, /* special_function */
274 "R_PPC_ADDR16_HI", /* name */
275 FALSE, /* partial_inplace */
276 0, /* src_mask */
277 0xffff, /* dst_mask */
278 FALSE), /* pcrel_offset */
279
280 /* The high order 16 bits of an address, plus 1 if the contents of
281 the low 16 bits, treated as a signed number, is negative. */
282 HOWTO (R_PPC_ADDR16_HA, /* type */
283 16, /* rightshift */
284 1, /* size (0 = byte, 1 = short, 2 = long) */
285 16, /* bitsize */
286 FALSE, /* pc_relative */
287 0, /* bitpos */
288 complain_overflow_dont, /* complain_on_overflow */
289 ppc_elf_addr16_ha_reloc, /* special_function */
290 "R_PPC_ADDR16_HA", /* name */
291 FALSE, /* partial_inplace */
292 0, /* src_mask */
293 0xffff, /* dst_mask */
294 FALSE), /* pcrel_offset */
295
296 /* An absolute 16 bit branch; the lower two bits must be zero.
297 FIXME: we don't check that, we just clear them. */
298 HOWTO (R_PPC_ADDR14, /* type */
299 0, /* rightshift */
300 2, /* size (0 = byte, 1 = short, 2 = long) */
301 16, /* bitsize */
302 FALSE, /* pc_relative */
303 0, /* bitpos */
304 complain_overflow_bitfield, /* complain_on_overflow */
305 bfd_elf_generic_reloc, /* special_function */
306 "R_PPC_ADDR14", /* name */
307 FALSE, /* partial_inplace */
308 0, /* src_mask */
309 0xfffc, /* dst_mask */
310 FALSE), /* pcrel_offset */
311
312 /* An absolute 16 bit branch, for which bit 10 should be set to
313 indicate that the branch is expected to be taken. The lower two
314 bits must be zero. */
315 HOWTO (R_PPC_ADDR14_BRTAKEN, /* type */
316 0, /* rightshift */
317 2, /* size (0 = byte, 1 = short, 2 = long) */
318 16, /* bitsize */
319 FALSE, /* pc_relative */
320 0, /* bitpos */
321 complain_overflow_bitfield, /* complain_on_overflow */
322 bfd_elf_generic_reloc, /* special_function */
323 "R_PPC_ADDR14_BRTAKEN",/* name */
324 FALSE, /* partial_inplace */
325 0, /* src_mask */
326 0xfffc, /* dst_mask */
327 FALSE), /* pcrel_offset */
328
329 /* An absolute 16 bit branch, for which bit 10 should be set to
330 indicate that the branch is not expected to be taken. The lower
331 two bits must be zero. */
332 HOWTO (R_PPC_ADDR14_BRNTAKEN, /* type */
333 0, /* rightshift */
334 2, /* size (0 = byte, 1 = short, 2 = long) */
335 16, /* bitsize */
336 FALSE, /* pc_relative */
337 0, /* bitpos */
338 complain_overflow_bitfield, /* complain_on_overflow */
339 bfd_elf_generic_reloc, /* special_function */
340 "R_PPC_ADDR14_BRNTAKEN",/* name */
341 FALSE, /* partial_inplace */
342 0, /* src_mask */
343 0xfffc, /* dst_mask */
344 FALSE), /* pcrel_offset */
345
346 /* A relative 26 bit branch; the lower two bits must be zero. */
347 HOWTO (R_PPC_REL24, /* type */
348 0, /* rightshift */
349 2, /* size (0 = byte, 1 = short, 2 = long) */
350 26, /* bitsize */
351 TRUE, /* pc_relative */
352 0, /* bitpos */
353 complain_overflow_signed, /* complain_on_overflow */
354 bfd_elf_generic_reloc, /* special_function */
355 "R_PPC_REL24", /* name */
356 FALSE, /* partial_inplace */
357 0, /* src_mask */
358 0x3fffffc, /* dst_mask */
359 TRUE), /* pcrel_offset */
360
361 /* A relative 16 bit branch; the lower two bits must be zero. */
362 HOWTO (R_PPC_REL14, /* type */
363 0, /* rightshift */
364 2, /* size (0 = byte, 1 = short, 2 = long) */
365 16, /* bitsize */
366 TRUE, /* pc_relative */
367 0, /* bitpos */
368 complain_overflow_signed, /* complain_on_overflow */
369 bfd_elf_generic_reloc, /* special_function */
370 "R_PPC_REL14", /* name */
371 FALSE, /* partial_inplace */
372 0, /* src_mask */
373 0xfffc, /* dst_mask */
374 TRUE), /* pcrel_offset */
375
376 /* A relative 16 bit branch. Bit 10 should be set to indicate that
377 the branch is expected to be taken. The lower two bits must be
378 zero. */
379 HOWTO (R_PPC_REL14_BRTAKEN, /* type */
380 0, /* rightshift */
381 2, /* size (0 = byte, 1 = short, 2 = long) */
382 16, /* bitsize */
383 TRUE, /* pc_relative */
384 0, /* bitpos */
385 complain_overflow_signed, /* complain_on_overflow */
386 bfd_elf_generic_reloc, /* special_function */
387 "R_PPC_REL14_BRTAKEN", /* name */
388 FALSE, /* partial_inplace */
389 0, /* src_mask */
390 0xfffc, /* dst_mask */
391 TRUE), /* pcrel_offset */
392
393 /* A relative 16 bit branch. Bit 10 should be set to indicate that
394 the branch is not expected to be taken. The lower two bits must
395 be zero. */
396 HOWTO (R_PPC_REL14_BRNTAKEN, /* type */
397 0, /* rightshift */
398 2, /* size (0 = byte, 1 = short, 2 = long) */
399 16, /* bitsize */
400 TRUE, /* pc_relative */
401 0, /* bitpos */
402 complain_overflow_signed, /* complain_on_overflow */
403 bfd_elf_generic_reloc, /* special_function */
404 "R_PPC_REL14_BRNTAKEN",/* name */
405 FALSE, /* partial_inplace */
406 0, /* src_mask */
407 0xfffc, /* dst_mask */
408 TRUE), /* pcrel_offset */
409
410 /* Like R_PPC_ADDR16, but referring to the GOT table entry for the
411 symbol. */
412 HOWTO (R_PPC_GOT16, /* type */
413 0, /* rightshift */
414 1, /* size (0 = byte, 1 = short, 2 = long) */
415 16, /* bitsize */
416 FALSE, /* pc_relative */
417 0, /* bitpos */
418 complain_overflow_signed, /* complain_on_overflow */
419 bfd_elf_generic_reloc, /* special_function */
420 "R_PPC_GOT16", /* name */
421 FALSE, /* partial_inplace */
422 0, /* src_mask */
423 0xffff, /* dst_mask */
424 FALSE), /* pcrel_offset */
425
426 /* Like R_PPC_ADDR16_LO, but referring to the GOT table entry for
427 the symbol. */
428 HOWTO (R_PPC_GOT16_LO, /* type */
429 0, /* rightshift */
430 1, /* size (0 = byte, 1 = short, 2 = long) */
431 16, /* bitsize */
432 FALSE, /* pc_relative */
433 0, /* bitpos */
434 complain_overflow_dont, /* complain_on_overflow */
435 bfd_elf_generic_reloc, /* special_function */
436 "R_PPC_GOT16_LO", /* name */
437 FALSE, /* partial_inplace */
438 0, /* src_mask */
439 0xffff, /* dst_mask */
440 FALSE), /* pcrel_offset */
441
442 /* Like R_PPC_ADDR16_HI, but referring to the GOT table entry for
443 the symbol. */
444 HOWTO (R_PPC_GOT16_HI, /* type */
445 16, /* rightshift */
446 1, /* size (0 = byte, 1 = short, 2 = long) */
447 16, /* bitsize */
448 FALSE, /* pc_relative */
449 0, /* bitpos */
450 complain_overflow_bitfield, /* complain_on_overflow */
451 bfd_elf_generic_reloc, /* special_function */
452 "R_PPC_GOT16_HI", /* name */
453 FALSE, /* partial_inplace */
454 0, /* src_mask */
455 0xffff, /* dst_mask */
456 FALSE), /* pcrel_offset */
457
458 /* Like R_PPC_ADDR16_HA, but referring to the GOT table entry for
459 the symbol. */
460 HOWTO (R_PPC_GOT16_HA, /* type */
461 16, /* rightshift */
462 1, /* size (0 = byte, 1 = short, 2 = long) */
463 16, /* bitsize */
464 FALSE, /* pc_relative */
465 0, /* bitpos */
466 complain_overflow_bitfield, /* complain_on_overflow */
467 ppc_elf_addr16_ha_reloc, /* special_function */
468 "R_PPC_GOT16_HA", /* name */
469 FALSE, /* partial_inplace */
470 0, /* src_mask */
471 0xffff, /* dst_mask */
472 FALSE), /* pcrel_offset */
473
474 /* Like R_PPC_REL24, but referring to the procedure linkage table
475 entry for the symbol. */
476 HOWTO (R_PPC_PLTREL24, /* type */
477 0, /* rightshift */
478 2, /* size (0 = byte, 1 = short, 2 = long) */
479 26, /* bitsize */
480 TRUE, /* pc_relative */
481 0, /* bitpos */
482 complain_overflow_signed, /* complain_on_overflow */
483 bfd_elf_generic_reloc, /* special_function */
484 "R_PPC_PLTREL24", /* name */
485 FALSE, /* partial_inplace */
486 0, /* src_mask */
487 0x3fffffc, /* dst_mask */
488 TRUE), /* pcrel_offset */
489
490 /* This is used only by the dynamic linker. The symbol should exist
491 both in the object being run and in some shared library. The
492 dynamic linker copies the data addressed by the symbol from the
493 shared library into the object, because the object being
494 run has to have the data at some particular address. */
495 HOWTO (R_PPC_COPY, /* type */
496 0, /* rightshift */
497 2, /* size (0 = byte, 1 = short, 2 = long) */
498 32, /* bitsize */
499 FALSE, /* pc_relative */
500 0, /* bitpos */
501 complain_overflow_bitfield, /* complain_on_overflow */
502 bfd_elf_generic_reloc, /* special_function */
503 "R_PPC_COPY", /* name */
504 FALSE, /* partial_inplace */
505 0, /* src_mask */
506 0, /* dst_mask */
507 FALSE), /* pcrel_offset */
508
509 /* Like R_PPC_ADDR32, but used when setting global offset table
510 entries. */
511 HOWTO (R_PPC_GLOB_DAT, /* type */
512 0, /* rightshift */
513 2, /* size (0 = byte, 1 = short, 2 = long) */
514 32, /* bitsize */
515 FALSE, /* pc_relative */
516 0, /* bitpos */
517 complain_overflow_bitfield, /* complain_on_overflow */
518 bfd_elf_generic_reloc, /* special_function */
519 "R_PPC_GLOB_DAT", /* name */
520 FALSE, /* partial_inplace */
521 0, /* src_mask */
522 0xffffffff, /* dst_mask */
523 FALSE), /* pcrel_offset */
524
525 /* Marks a procedure linkage table entry for a symbol. */
526 HOWTO (R_PPC_JMP_SLOT, /* type */
527 0, /* rightshift */
528 2, /* size (0 = byte, 1 = short, 2 = long) */
529 32, /* bitsize */
530 FALSE, /* pc_relative */
531 0, /* bitpos */
532 complain_overflow_bitfield, /* complain_on_overflow */
533 bfd_elf_generic_reloc, /* special_function */
534 "R_PPC_JMP_SLOT", /* name */
535 FALSE, /* partial_inplace */
536 0, /* src_mask */
537 0, /* dst_mask */
538 FALSE), /* pcrel_offset */
539
540 /* Used only by the dynamic linker. When the object is run, this
541 longword is set to the load address of the object, plus the
542 addend. */
543 HOWTO (R_PPC_RELATIVE, /* type */
544 0, /* rightshift */
545 2, /* size (0 = byte, 1 = short, 2 = long) */
546 32, /* bitsize */
547 FALSE, /* pc_relative */
548 0, /* bitpos */
549 complain_overflow_bitfield, /* complain_on_overflow */
550 bfd_elf_generic_reloc, /* special_function */
551 "R_PPC_RELATIVE", /* name */
552 FALSE, /* partial_inplace */
553 0, /* src_mask */
554 0xffffffff, /* dst_mask */
555 FALSE), /* pcrel_offset */
556
557 /* Like R_PPC_REL24, but uses the value of the symbol within the
558 object rather than the final value. Normally used for
559 _GLOBAL_OFFSET_TABLE_. */
560 HOWTO (R_PPC_LOCAL24PC, /* type */
561 0, /* rightshift */
562 2, /* size (0 = byte, 1 = short, 2 = long) */
563 26, /* bitsize */
564 TRUE, /* pc_relative */
565 0, /* bitpos */
566 complain_overflow_signed, /* complain_on_overflow */
567 bfd_elf_generic_reloc, /* special_function */
568 "R_PPC_LOCAL24PC", /* name */
569 FALSE, /* partial_inplace */
570 0, /* src_mask */
571 0x3fffffc, /* dst_mask */
572 TRUE), /* pcrel_offset */
573
574 /* Like R_PPC_ADDR32, but may be unaligned. */
575 HOWTO (R_PPC_UADDR32, /* type */
576 0, /* rightshift */
577 2, /* size (0 = byte, 1 = short, 2 = long) */
578 32, /* bitsize */
579 FALSE, /* pc_relative */
580 0, /* bitpos */
581 complain_overflow_bitfield, /* complain_on_overflow */
582 bfd_elf_generic_reloc, /* special_function */
583 "R_PPC_UADDR32", /* name */
584 FALSE, /* partial_inplace */
585 0, /* src_mask */
586 0xffffffff, /* dst_mask */
587 FALSE), /* pcrel_offset */
588
589 /* Like R_PPC_ADDR16, but may be unaligned. */
590 HOWTO (R_PPC_UADDR16, /* type */
591 0, /* rightshift */
592 1, /* size (0 = byte, 1 = short, 2 = long) */
593 16, /* bitsize */
594 FALSE, /* pc_relative */
595 0, /* bitpos */
596 complain_overflow_bitfield, /* complain_on_overflow */
597 bfd_elf_generic_reloc, /* special_function */
598 "R_PPC_UADDR16", /* name */
599 FALSE, /* partial_inplace */
600 0, /* src_mask */
601 0xffff, /* dst_mask */
602 FALSE), /* pcrel_offset */
603
604 /* 32-bit PC relative */
605 HOWTO (R_PPC_REL32, /* type */
606 0, /* rightshift */
607 2, /* size (0 = byte, 1 = short, 2 = long) */
608 32, /* bitsize */
609 TRUE, /* pc_relative */
610 0, /* bitpos */
611 complain_overflow_bitfield, /* complain_on_overflow */
612 bfd_elf_generic_reloc, /* special_function */
613 "R_PPC_REL32", /* name */
614 FALSE, /* partial_inplace */
615 0, /* src_mask */
616 0xffffffff, /* dst_mask */
617 TRUE), /* pcrel_offset */
618
619 /* 32-bit relocation to the symbol's procedure linkage table.
620 FIXME: not supported. */
621 HOWTO (R_PPC_PLT32, /* type */
622 0, /* rightshift */
623 2, /* size (0 = byte, 1 = short, 2 = long) */
624 32, /* bitsize */
625 FALSE, /* pc_relative */
626 0, /* bitpos */
627 complain_overflow_bitfield, /* complain_on_overflow */
628 bfd_elf_generic_reloc, /* special_function */
629 "R_PPC_PLT32", /* name */
630 FALSE, /* partial_inplace */
631 0, /* src_mask */
632 0, /* dst_mask */
633 FALSE), /* pcrel_offset */
634
635 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
636 FIXME: not supported. */
637 HOWTO (R_PPC_PLTREL32, /* type */
638 0, /* rightshift */
639 2, /* size (0 = byte, 1 = short, 2 = long) */
640 32, /* bitsize */
641 TRUE, /* pc_relative */
642 0, /* bitpos */
643 complain_overflow_bitfield, /* complain_on_overflow */
644 bfd_elf_generic_reloc, /* special_function */
645 "R_PPC_PLTREL32", /* name */
646 FALSE, /* partial_inplace */
647 0, /* src_mask */
648 0, /* dst_mask */
649 TRUE), /* pcrel_offset */
650
651 /* Like R_PPC_ADDR16_LO, but referring to the PLT table entry for
652 the symbol. */
653 HOWTO (R_PPC_PLT16_LO, /* type */
654 0, /* rightshift */
655 1, /* size (0 = byte, 1 = short, 2 = long) */
656 16, /* bitsize */
657 FALSE, /* pc_relative */
658 0, /* bitpos */
659 complain_overflow_dont, /* complain_on_overflow */
660 bfd_elf_generic_reloc, /* special_function */
661 "R_PPC_PLT16_LO", /* name */
662 FALSE, /* partial_inplace */
663 0, /* src_mask */
664 0xffff, /* dst_mask */
665 FALSE), /* pcrel_offset */
666
667 /* Like R_PPC_ADDR16_HI, but referring to the PLT table entry for
668 the symbol. */
669 HOWTO (R_PPC_PLT16_HI, /* type */
670 16, /* rightshift */
671 1, /* size (0 = byte, 1 = short, 2 = long) */
672 16, /* bitsize */
673 FALSE, /* pc_relative */
674 0, /* bitpos */
675 complain_overflow_bitfield, /* complain_on_overflow */
676 bfd_elf_generic_reloc, /* special_function */
677 "R_PPC_PLT16_HI", /* name */
678 FALSE, /* partial_inplace */
679 0, /* src_mask */
680 0xffff, /* dst_mask */
681 FALSE), /* pcrel_offset */
682
683 /* Like R_PPC_ADDR16_HA, but referring to the PLT table entry for
684 the symbol. */
685 HOWTO (R_PPC_PLT16_HA, /* type */
686 16, /* rightshift */
687 1, /* size (0 = byte, 1 = short, 2 = long) */
688 16, /* bitsize */
689 FALSE, /* pc_relative */
690 0, /* bitpos */
691 complain_overflow_bitfield, /* complain_on_overflow */
692 ppc_elf_addr16_ha_reloc, /* special_function */
693 "R_PPC_PLT16_HA", /* name */
694 FALSE, /* partial_inplace */
695 0, /* src_mask */
696 0xffff, /* dst_mask */
697 FALSE), /* pcrel_offset */
698
699 /* A sign-extended 16 bit value relative to _SDA_BASE_, for use with
700 small data items. */
701 HOWTO (R_PPC_SDAREL16, /* type */
702 0, /* rightshift */
703 1, /* size (0 = byte, 1 = short, 2 = long) */
704 16, /* bitsize */
705 FALSE, /* pc_relative */
706 0, /* bitpos */
707 complain_overflow_signed, /* complain_on_overflow */
708 bfd_elf_generic_reloc, /* special_function */
709 "R_PPC_SDAREL16", /* name */
710 FALSE, /* partial_inplace */
711 0, /* src_mask */
712 0xffff, /* dst_mask */
713 FALSE), /* pcrel_offset */
714
715 /* 16-bit section relative relocation. */
716 HOWTO (R_PPC_SECTOFF, /* type */
717 0, /* rightshift */
718 1, /* size (0 = byte, 1 = short, 2 = long) */
719 16, /* bitsize */
720 FALSE, /* pc_relative */
721 0, /* bitpos */
722 complain_overflow_bitfield, /* complain_on_overflow */
723 bfd_elf_generic_reloc, /* special_function */
724 "R_PPC_SECTOFF", /* name */
725 FALSE, /* partial_inplace */
726 0, /* src_mask */
727 0xffff, /* dst_mask */
728 FALSE), /* pcrel_offset */
729
730 /* 16-bit lower half section relative relocation. */
731 HOWTO (R_PPC_SECTOFF_LO, /* type */
732 0, /* rightshift */
733 1, /* size (0 = byte, 1 = short, 2 = long) */
734 16, /* bitsize */
735 FALSE, /* pc_relative */
736 0, /* bitpos */
737 complain_overflow_dont, /* complain_on_overflow */
738 bfd_elf_generic_reloc, /* special_function */
739 "R_PPC_SECTOFF_LO", /* name */
740 FALSE, /* partial_inplace */
741 0, /* src_mask */
742 0xffff, /* dst_mask */
743 FALSE), /* pcrel_offset */
744
745 /* 16-bit upper half section relative relocation. */
746 HOWTO (R_PPC_SECTOFF_HI, /* type */
747 16, /* rightshift */
748 1, /* size (0 = byte, 1 = short, 2 = long) */
749 16, /* bitsize */
750 FALSE, /* pc_relative */
751 0, /* bitpos */
752 complain_overflow_bitfield, /* complain_on_overflow */
753 bfd_elf_generic_reloc, /* special_function */
754 "R_PPC_SECTOFF_HI", /* name */
755 FALSE, /* partial_inplace */
756 0, /* src_mask */
757 0xffff, /* dst_mask */
758 FALSE), /* pcrel_offset */
759
760 /* 16-bit upper half adjusted section relative relocation. */
761 HOWTO (R_PPC_SECTOFF_HA, /* type */
762 16, /* rightshift */
763 1, /* size (0 = byte, 1 = short, 2 = long) */
764 16, /* bitsize */
765 FALSE, /* pc_relative */
766 0, /* bitpos */
767 complain_overflow_bitfield, /* complain_on_overflow */
768 ppc_elf_addr16_ha_reloc, /* special_function */
769 "R_PPC_SECTOFF_HA", /* name */
770 FALSE, /* partial_inplace */
771 0, /* src_mask */
772 0xffff, /* dst_mask */
773 FALSE), /* pcrel_offset */
774
775 /* Marker relocs for TLS. */
776 HOWTO (R_PPC_TLS,
777 0, /* rightshift */
778 2, /* size (0 = byte, 1 = short, 2 = long) */
779 32, /* bitsize */
780 FALSE, /* pc_relative */
781 0, /* bitpos */
782 complain_overflow_dont, /* complain_on_overflow */
783 bfd_elf_generic_reloc, /* special_function */
784 "R_PPC_TLS", /* name */
785 FALSE, /* partial_inplace */
786 0, /* src_mask */
787 0, /* dst_mask */
788 FALSE), /* pcrel_offset */
789
790 HOWTO (R_PPC_TLSGD,
791 0, /* rightshift */
792 2, /* size (0 = byte, 1 = short, 2 = long) */
793 32, /* bitsize */
794 FALSE, /* pc_relative */
795 0, /* bitpos */
796 complain_overflow_dont, /* complain_on_overflow */
797 bfd_elf_generic_reloc, /* special_function */
798 "R_PPC_TLSGD", /* name */
799 FALSE, /* partial_inplace */
800 0, /* src_mask */
801 0, /* dst_mask */
802 FALSE), /* pcrel_offset */
803
804 HOWTO (R_PPC_TLSLD,
805 0, /* rightshift */
806 2, /* size (0 = byte, 1 = short, 2 = long) */
807 32, /* bitsize */
808 FALSE, /* pc_relative */
809 0, /* bitpos */
810 complain_overflow_dont, /* complain_on_overflow */
811 bfd_elf_generic_reloc, /* special_function */
812 "R_PPC_TLSLD", /* name */
813 FALSE, /* partial_inplace */
814 0, /* src_mask */
815 0, /* dst_mask */
816 FALSE), /* pcrel_offset */
817
818 /* Computes the load module index of the load module that contains the
819 definition of its TLS sym. */
820 HOWTO (R_PPC_DTPMOD32,
821 0, /* rightshift */
822 2, /* size (0 = byte, 1 = short, 2 = long) */
823 32, /* bitsize */
824 FALSE, /* pc_relative */
825 0, /* bitpos */
826 complain_overflow_dont, /* complain_on_overflow */
827 ppc_elf_unhandled_reloc, /* special_function */
828 "R_PPC_DTPMOD32", /* name */
829 FALSE, /* partial_inplace */
830 0, /* src_mask */
831 0xffffffff, /* dst_mask */
832 FALSE), /* pcrel_offset */
833
834 /* Computes a dtv-relative displacement, the difference between the value
835 of sym+add and the base address of the thread-local storage block that
836 contains the definition of sym, minus 0x8000. */
837 HOWTO (R_PPC_DTPREL32,
838 0, /* rightshift */
839 2, /* size (0 = byte, 1 = short, 2 = long) */
840 32, /* bitsize */
841 FALSE, /* pc_relative */
842 0, /* bitpos */
843 complain_overflow_dont, /* complain_on_overflow */
844 ppc_elf_unhandled_reloc, /* special_function */
845 "R_PPC_DTPREL32", /* name */
846 FALSE, /* partial_inplace */
847 0, /* src_mask */
848 0xffffffff, /* dst_mask */
849 FALSE), /* pcrel_offset */
850
851 /* A 16 bit dtprel reloc. */
852 HOWTO (R_PPC_DTPREL16,
853 0, /* rightshift */
854 1, /* size (0 = byte, 1 = short, 2 = long) */
855 16, /* bitsize */
856 FALSE, /* pc_relative */
857 0, /* bitpos */
858 complain_overflow_signed, /* complain_on_overflow */
859 ppc_elf_unhandled_reloc, /* special_function */
860 "R_PPC_DTPREL16", /* name */
861 FALSE, /* partial_inplace */
862 0, /* src_mask */
863 0xffff, /* dst_mask */
864 FALSE), /* pcrel_offset */
865
866 /* Like DTPREL16, but no overflow. */
867 HOWTO (R_PPC_DTPREL16_LO,
868 0, /* rightshift */
869 1, /* size (0 = byte, 1 = short, 2 = long) */
870 16, /* bitsize */
871 FALSE, /* pc_relative */
872 0, /* bitpos */
873 complain_overflow_dont, /* complain_on_overflow */
874 ppc_elf_unhandled_reloc, /* special_function */
875 "R_PPC_DTPREL16_LO", /* name */
876 FALSE, /* partial_inplace */
877 0, /* src_mask */
878 0xffff, /* dst_mask */
879 FALSE), /* pcrel_offset */
880
881 /* Like DTPREL16_LO, but next higher group of 16 bits. */
882 HOWTO (R_PPC_DTPREL16_HI,
883 16, /* rightshift */
884 1, /* size (0 = byte, 1 = short, 2 = long) */
885 16, /* bitsize */
886 FALSE, /* pc_relative */
887 0, /* bitpos */
888 complain_overflow_dont, /* complain_on_overflow */
889 ppc_elf_unhandled_reloc, /* special_function */
890 "R_PPC_DTPREL16_HI", /* name */
891 FALSE, /* partial_inplace */
892 0, /* src_mask */
893 0xffff, /* dst_mask */
894 FALSE), /* pcrel_offset */
895
896 /* Like DTPREL16_HI, but adjust for low 16 bits. */
897 HOWTO (R_PPC_DTPREL16_HA,
898 16, /* rightshift */
899 1, /* size (0 = byte, 1 = short, 2 = long) */
900 16, /* bitsize */
901 FALSE, /* pc_relative */
902 0, /* bitpos */
903 complain_overflow_dont, /* complain_on_overflow */
904 ppc_elf_unhandled_reloc, /* special_function */
905 "R_PPC_DTPREL16_HA", /* name */
906 FALSE, /* partial_inplace */
907 0, /* src_mask */
908 0xffff, /* dst_mask */
909 FALSE), /* pcrel_offset */
910
911 /* Computes a tp-relative displacement, the difference between the value of
912 sym+add and the value of the thread pointer (r13). */
913 HOWTO (R_PPC_TPREL32,
914 0, /* rightshift */
915 2, /* size (0 = byte, 1 = short, 2 = long) */
916 32, /* bitsize */
917 FALSE, /* pc_relative */
918 0, /* bitpos */
919 complain_overflow_dont, /* complain_on_overflow */
920 ppc_elf_unhandled_reloc, /* special_function */
921 "R_PPC_TPREL32", /* name */
922 FALSE, /* partial_inplace */
923 0, /* src_mask */
924 0xffffffff, /* dst_mask */
925 FALSE), /* pcrel_offset */
926
927 /* A 16 bit tprel reloc. */
928 HOWTO (R_PPC_TPREL16,
929 0, /* rightshift */
930 1, /* size (0 = byte, 1 = short, 2 = long) */
931 16, /* bitsize */
932 FALSE, /* pc_relative */
933 0, /* bitpos */
934 complain_overflow_signed, /* complain_on_overflow */
935 ppc_elf_unhandled_reloc, /* special_function */
936 "R_PPC_TPREL16", /* name */
937 FALSE, /* partial_inplace */
938 0, /* src_mask */
939 0xffff, /* dst_mask */
940 FALSE), /* pcrel_offset */
941
942 /* Like TPREL16, but no overflow. */
943 HOWTO (R_PPC_TPREL16_LO,
944 0, /* rightshift */
945 1, /* size (0 = byte, 1 = short, 2 = long) */
946 16, /* bitsize */
947 FALSE, /* pc_relative */
948 0, /* bitpos */
949 complain_overflow_dont, /* complain_on_overflow */
950 ppc_elf_unhandled_reloc, /* special_function */
951 "R_PPC_TPREL16_LO", /* name */
952 FALSE, /* partial_inplace */
953 0, /* src_mask */
954 0xffff, /* dst_mask */
955 FALSE), /* pcrel_offset */
956
957 /* Like TPREL16_LO, but next higher group of 16 bits. */
958 HOWTO (R_PPC_TPREL16_HI,
959 16, /* rightshift */
960 1, /* size (0 = byte, 1 = short, 2 = long) */
961 16, /* bitsize */
962 FALSE, /* pc_relative */
963 0, /* bitpos */
964 complain_overflow_dont, /* complain_on_overflow */
965 ppc_elf_unhandled_reloc, /* special_function */
966 "R_PPC_TPREL16_HI", /* name */
967 FALSE, /* partial_inplace */
968 0, /* src_mask */
969 0xffff, /* dst_mask */
970 FALSE), /* pcrel_offset */
971
972 /* Like TPREL16_HI, but adjust for low 16 bits. */
973 HOWTO (R_PPC_TPREL16_HA,
974 16, /* rightshift */
975 1, /* size (0 = byte, 1 = short, 2 = long) */
976 16, /* bitsize */
977 FALSE, /* pc_relative */
978 0, /* bitpos */
979 complain_overflow_dont, /* complain_on_overflow */
980 ppc_elf_unhandled_reloc, /* special_function */
981 "R_PPC_TPREL16_HA", /* name */
982 FALSE, /* partial_inplace */
983 0, /* src_mask */
984 0xffff, /* dst_mask */
985 FALSE), /* pcrel_offset */
986
987 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
988 with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
989 to the first entry. */
990 HOWTO (R_PPC_GOT_TLSGD16,
991 0, /* rightshift */
992 1, /* size (0 = byte, 1 = short, 2 = long) */
993 16, /* bitsize */
994 FALSE, /* pc_relative */
995 0, /* bitpos */
996 complain_overflow_signed, /* complain_on_overflow */
997 ppc_elf_unhandled_reloc, /* special_function */
998 "R_PPC_GOT_TLSGD16", /* name */
999 FALSE, /* partial_inplace */
1000 0, /* src_mask */
1001 0xffff, /* dst_mask */
1002 FALSE), /* pcrel_offset */
1003
1004 /* Like GOT_TLSGD16, but no overflow. */
1005 HOWTO (R_PPC_GOT_TLSGD16_LO,
1006 0, /* rightshift */
1007 1, /* size (0 = byte, 1 = short, 2 = long) */
1008 16, /* bitsize */
1009 FALSE, /* pc_relative */
1010 0, /* bitpos */
1011 complain_overflow_dont, /* complain_on_overflow */
1012 ppc_elf_unhandled_reloc, /* special_function */
1013 "R_PPC_GOT_TLSGD16_LO", /* name */
1014 FALSE, /* partial_inplace */
1015 0, /* src_mask */
1016 0xffff, /* dst_mask */
1017 FALSE), /* pcrel_offset */
1018
1019 /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
1020 HOWTO (R_PPC_GOT_TLSGD16_HI,
1021 16, /* rightshift */
1022 1, /* size (0 = byte, 1 = short, 2 = long) */
1023 16, /* bitsize */
1024 FALSE, /* pc_relative */
1025 0, /* bitpos */
1026 complain_overflow_dont, /* complain_on_overflow */
1027 ppc_elf_unhandled_reloc, /* special_function */
1028 "R_PPC_GOT_TLSGD16_HI", /* name */
1029 FALSE, /* partial_inplace */
1030 0, /* src_mask */
1031 0xffff, /* dst_mask */
1032 FALSE), /* pcrel_offset */
1033
1034 /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
1035 HOWTO (R_PPC_GOT_TLSGD16_HA,
1036 16, /* rightshift */
1037 1, /* size (0 = byte, 1 = short, 2 = long) */
1038 16, /* bitsize */
1039 FALSE, /* pc_relative */
1040 0, /* bitpos */
1041 complain_overflow_dont, /* complain_on_overflow */
1042 ppc_elf_unhandled_reloc, /* special_function */
1043 "R_PPC_GOT_TLSGD16_HA", /* name */
1044 FALSE, /* partial_inplace */
1045 0, /* src_mask */
1046 0xffff, /* dst_mask */
1047 FALSE), /* pcrel_offset */
1048
1049 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1050 with values (sym+add)@dtpmod and zero, and computes the offset to the
1051 first entry. */
1052 HOWTO (R_PPC_GOT_TLSLD16,
1053 0, /* rightshift */
1054 1, /* size (0 = byte, 1 = short, 2 = long) */
1055 16, /* bitsize */
1056 FALSE, /* pc_relative */
1057 0, /* bitpos */
1058 complain_overflow_signed, /* complain_on_overflow */
1059 ppc_elf_unhandled_reloc, /* special_function */
1060 "R_PPC_GOT_TLSLD16", /* name */
1061 FALSE, /* partial_inplace */
1062 0, /* src_mask */
1063 0xffff, /* dst_mask */
1064 FALSE), /* pcrel_offset */
1065
1066 /* Like GOT_TLSLD16, but no overflow. */
1067 HOWTO (R_PPC_GOT_TLSLD16_LO,
1068 0, /* rightshift */
1069 1, /* size (0 = byte, 1 = short, 2 = long) */
1070 16, /* bitsize */
1071 FALSE, /* pc_relative */
1072 0, /* bitpos */
1073 complain_overflow_dont, /* complain_on_overflow */
1074 ppc_elf_unhandled_reloc, /* special_function */
1075 "R_PPC_GOT_TLSLD16_LO", /* name */
1076 FALSE, /* partial_inplace */
1077 0, /* src_mask */
1078 0xffff, /* dst_mask */
1079 FALSE), /* pcrel_offset */
1080
1081 /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
1082 HOWTO (R_PPC_GOT_TLSLD16_HI,
1083 16, /* rightshift */
1084 1, /* size (0 = byte, 1 = short, 2 = long) */
1085 16, /* bitsize */
1086 FALSE, /* pc_relative */
1087 0, /* bitpos */
1088 complain_overflow_dont, /* complain_on_overflow */
1089 ppc_elf_unhandled_reloc, /* special_function */
1090 "R_PPC_GOT_TLSLD16_HI", /* name */
1091 FALSE, /* partial_inplace */
1092 0, /* src_mask */
1093 0xffff, /* dst_mask */
1094 FALSE), /* pcrel_offset */
1095
1096 /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
1097 HOWTO (R_PPC_GOT_TLSLD16_HA,
1098 16, /* rightshift */
1099 1, /* size (0 = byte, 1 = short, 2 = long) */
1100 16, /* bitsize */
1101 FALSE, /* pc_relative */
1102 0, /* bitpos */
1103 complain_overflow_dont, /* complain_on_overflow */
1104 ppc_elf_unhandled_reloc, /* special_function */
1105 "R_PPC_GOT_TLSLD16_HA", /* name */
1106 FALSE, /* partial_inplace */
1107 0, /* src_mask */
1108 0xffff, /* dst_mask */
1109 FALSE), /* pcrel_offset */
1110
1111 /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
1112 the offset to the entry. */
1113 HOWTO (R_PPC_GOT_DTPREL16,
1114 0, /* rightshift */
1115 1, /* size (0 = byte, 1 = short, 2 = long) */
1116 16, /* bitsize */
1117 FALSE, /* pc_relative */
1118 0, /* bitpos */
1119 complain_overflow_signed, /* complain_on_overflow */
1120 ppc_elf_unhandled_reloc, /* special_function */
1121 "R_PPC_GOT_DTPREL16", /* name */
1122 FALSE, /* partial_inplace */
1123 0, /* src_mask */
1124 0xffff, /* dst_mask */
1125 FALSE), /* pcrel_offset */
1126
1127 /* Like GOT_DTPREL16, but no overflow. */
1128 HOWTO (R_PPC_GOT_DTPREL16_LO,
1129 0, /* rightshift */
1130 1, /* size (0 = byte, 1 = short, 2 = long) */
1131 16, /* bitsize */
1132 FALSE, /* pc_relative */
1133 0, /* bitpos */
1134 complain_overflow_dont, /* complain_on_overflow */
1135 ppc_elf_unhandled_reloc, /* special_function */
1136 "R_PPC_GOT_DTPREL16_LO", /* name */
1137 FALSE, /* partial_inplace */
1138 0, /* src_mask */
1139 0xffff, /* dst_mask */
1140 FALSE), /* pcrel_offset */
1141
1142 /* Like GOT_DTPREL16_LO, but next higher group of 16 bits. */
1143 HOWTO (R_PPC_GOT_DTPREL16_HI,
1144 16, /* rightshift */
1145 1, /* size (0 = byte, 1 = short, 2 = long) */
1146 16, /* bitsize */
1147 FALSE, /* pc_relative */
1148 0, /* bitpos */
1149 complain_overflow_dont, /* complain_on_overflow */
1150 ppc_elf_unhandled_reloc, /* special_function */
1151 "R_PPC_GOT_DTPREL16_HI", /* name */
1152 FALSE, /* partial_inplace */
1153 0, /* src_mask */
1154 0xffff, /* dst_mask */
1155 FALSE), /* pcrel_offset */
1156
1157 /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
1158 HOWTO (R_PPC_GOT_DTPREL16_HA,
1159 16, /* rightshift */
1160 1, /* size (0 = byte, 1 = short, 2 = long) */
1161 16, /* bitsize */
1162 FALSE, /* pc_relative */
1163 0, /* bitpos */
1164 complain_overflow_dont, /* complain_on_overflow */
1165 ppc_elf_unhandled_reloc, /* special_function */
1166 "R_PPC_GOT_DTPREL16_HA", /* name */
1167 FALSE, /* partial_inplace */
1168 0, /* src_mask */
1169 0xffff, /* dst_mask */
1170 FALSE), /* pcrel_offset */
1171
1172 /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
1173 offset to the entry. */
1174 HOWTO (R_PPC_GOT_TPREL16,
1175 0, /* rightshift */
1176 1, /* size (0 = byte, 1 = short, 2 = long) */
1177 16, /* bitsize */
1178 FALSE, /* pc_relative */
1179 0, /* bitpos */
1180 complain_overflow_signed, /* complain_on_overflow */
1181 ppc_elf_unhandled_reloc, /* special_function */
1182 "R_PPC_GOT_TPREL16", /* name */
1183 FALSE, /* partial_inplace */
1184 0, /* src_mask */
1185 0xffff, /* dst_mask */
1186 FALSE), /* pcrel_offset */
1187
1188 /* Like GOT_TPREL16, but no overflow. */
1189 HOWTO (R_PPC_GOT_TPREL16_LO,
1190 0, /* rightshift */
1191 1, /* size (0 = byte, 1 = short, 2 = long) */
1192 16, /* bitsize */
1193 FALSE, /* pc_relative */
1194 0, /* bitpos */
1195 complain_overflow_dont, /* complain_on_overflow */
1196 ppc_elf_unhandled_reloc, /* special_function */
1197 "R_PPC_GOT_TPREL16_LO", /* name */
1198 FALSE, /* partial_inplace */
1199 0, /* src_mask */
1200 0xffff, /* dst_mask */
1201 FALSE), /* pcrel_offset */
1202
1203 /* Like GOT_TPREL16_LO, but next higher group of 16 bits. */
1204 HOWTO (R_PPC_GOT_TPREL16_HI,
1205 16, /* rightshift */
1206 1, /* size (0 = byte, 1 = short, 2 = long) */
1207 16, /* bitsize */
1208 FALSE, /* pc_relative */
1209 0, /* bitpos */
1210 complain_overflow_dont, /* complain_on_overflow */
1211 ppc_elf_unhandled_reloc, /* special_function */
1212 "R_PPC_GOT_TPREL16_HI", /* name */
1213 FALSE, /* partial_inplace */
1214 0, /* src_mask */
1215 0xffff, /* dst_mask */
1216 FALSE), /* pcrel_offset */
1217
1218 /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
1219 HOWTO (R_PPC_GOT_TPREL16_HA,
1220 16, /* rightshift */
1221 1, /* size (0 = byte, 1 = short, 2 = long) */
1222 16, /* bitsize */
1223 FALSE, /* pc_relative */
1224 0, /* bitpos */
1225 complain_overflow_dont, /* complain_on_overflow */
1226 ppc_elf_unhandled_reloc, /* special_function */
1227 "R_PPC_GOT_TPREL16_HA", /* name */
1228 FALSE, /* partial_inplace */
1229 0, /* src_mask */
1230 0xffff, /* dst_mask */
1231 FALSE), /* pcrel_offset */
1232
1233 /* The remaining relocs are from the Embedded ELF ABI, and are not
1234 in the SVR4 ELF ABI. */
1235
1236 /* 32 bit value resulting from the addend minus the symbol. */
1237 HOWTO (R_PPC_EMB_NADDR32, /* type */
1238 0, /* rightshift */
1239 2, /* size (0 = byte, 1 = short, 2 = long) */
1240 32, /* bitsize */
1241 FALSE, /* pc_relative */
1242 0, /* bitpos */
1243 complain_overflow_bitfield, /* complain_on_overflow */
1244 bfd_elf_generic_reloc, /* special_function */
1245 "R_PPC_EMB_NADDR32", /* name */
1246 FALSE, /* partial_inplace */
1247 0, /* src_mask */
1248 0xffffffff, /* dst_mask */
1249 FALSE), /* pcrel_offset */
1250
1251 /* 16 bit value resulting from the addend minus the symbol. */
1252 HOWTO (R_PPC_EMB_NADDR16, /* type */
1253 0, /* rightshift */
1254 1, /* size (0 = byte, 1 = short, 2 = long) */
1255 16, /* bitsize */
1256 FALSE, /* pc_relative */
1257 0, /* bitpos */
1258 complain_overflow_bitfield, /* complain_on_overflow */
1259 bfd_elf_generic_reloc, /* special_function */
1260 "R_PPC_EMB_NADDR16", /* name */
1261 FALSE, /* partial_inplace */
1262 0, /* src_mask */
1263 0xffff, /* dst_mask */
1264 FALSE), /* pcrel_offset */
1265
1266 /* 16 bit value resulting from the addend minus the symbol. */
1267 HOWTO (R_PPC_EMB_NADDR16_LO, /* type */
1268 0, /* rightshift */
1269 1, /* size (0 = byte, 1 = short, 2 = long) */
1270 16, /* bitsize */
1271 FALSE, /* pc_relative */
1272 0, /* bitpos */
1273 complain_overflow_dont,/* complain_on_overflow */
1274 bfd_elf_generic_reloc, /* special_function */
1275 "R_PPC_EMB_ADDR16_LO", /* name */
1276 FALSE, /* partial_inplace */
1277 0, /* src_mask */
1278 0xffff, /* dst_mask */
1279 FALSE), /* pcrel_offset */
1280
1281 /* The high order 16 bits of the addend minus the symbol. */
1282 HOWTO (R_PPC_EMB_NADDR16_HI, /* type */
1283 16, /* rightshift */
1284 1, /* size (0 = byte, 1 = short, 2 = long) */
1285 16, /* bitsize */
1286 FALSE, /* pc_relative */
1287 0, /* bitpos */
1288 complain_overflow_dont, /* complain_on_overflow */
1289 bfd_elf_generic_reloc, /* special_function */
1290 "R_PPC_EMB_NADDR16_HI", /* name */
1291 FALSE, /* partial_inplace */
1292 0, /* src_mask */
1293 0xffff, /* dst_mask */
1294 FALSE), /* pcrel_offset */
1295
1296 /* The high order 16 bits of the result of the addend minus the address,
1297 plus 1 if the contents of the low 16 bits, treated as a signed number,
1298 is negative. */
1299 HOWTO (R_PPC_EMB_NADDR16_HA, /* type */
1300 16, /* rightshift */
1301 1, /* size (0 = byte, 1 = short, 2 = long) */
1302 16, /* bitsize */
1303 FALSE, /* pc_relative */
1304 0, /* bitpos */
1305 complain_overflow_dont, /* complain_on_overflow */
1306 ppc_elf_addr16_ha_reloc, /* special_function */
1307 "R_PPC_EMB_NADDR16_HA", /* name */
1308 FALSE, /* partial_inplace */
1309 0, /* src_mask */
1310 0xffff, /* dst_mask */
1311 FALSE), /* pcrel_offset */
1312
1313 /* 16 bit value resulting from allocating a 4 byte word to hold an
1314 address in the .sdata section, and returning the offset from
1315 _SDA_BASE_ for that relocation. */
1316 HOWTO (R_PPC_EMB_SDAI16, /* type */
1317 0, /* rightshift */
1318 1, /* size (0 = byte, 1 = short, 2 = long) */
1319 16, /* bitsize */
1320 FALSE, /* pc_relative */
1321 0, /* bitpos */
1322 complain_overflow_signed, /* complain_on_overflow */
1323 bfd_elf_generic_reloc, /* special_function */
1324 "R_PPC_EMB_SDAI16", /* name */
1325 FALSE, /* partial_inplace */
1326 0, /* src_mask */
1327 0xffff, /* dst_mask */
1328 FALSE), /* pcrel_offset */
1329
1330 /* 16 bit value resulting from allocating a 4 byte word to hold an
1331 address in the .sdata2 section, and returning the offset from
1332 _SDA2_BASE_ for that relocation. */
1333 HOWTO (R_PPC_EMB_SDA2I16, /* type */
1334 0, /* rightshift */
1335 1, /* size (0 = byte, 1 = short, 2 = long) */
1336 16, /* bitsize */
1337 FALSE, /* pc_relative */
1338 0, /* bitpos */
1339 complain_overflow_signed, /* complain_on_overflow */
1340 bfd_elf_generic_reloc, /* special_function */
1341 "R_PPC_EMB_SDA2I16", /* name */
1342 FALSE, /* partial_inplace */
1343 0, /* src_mask */
1344 0xffff, /* dst_mask */
1345 FALSE), /* pcrel_offset */
1346
1347 /* A sign-extended 16 bit value relative to _SDA2_BASE_, for use with
1348 small data items. */
1349 HOWTO (R_PPC_EMB_SDA2REL, /* type */
1350 0, /* rightshift */
1351 1, /* size (0 = byte, 1 = short, 2 = long) */
1352 16, /* bitsize */
1353 FALSE, /* pc_relative */
1354 0, /* bitpos */
1355 complain_overflow_signed, /* complain_on_overflow */
1356 bfd_elf_generic_reloc, /* special_function */
1357 "R_PPC_EMB_SDA2REL", /* name */
1358 FALSE, /* partial_inplace */
1359 0, /* src_mask */
1360 0xffff, /* dst_mask */
1361 FALSE), /* pcrel_offset */
1362
1363 /* Relocate against either _SDA_BASE_ or _SDA2_BASE_, filling in the 16 bit
1364 signed offset from the appropriate base, and filling in the register
1365 field with the appropriate register (0, 2, or 13). */
1366 HOWTO (R_PPC_EMB_SDA21, /* type */
1367 0, /* rightshift */
1368 2, /* size (0 = byte, 1 = short, 2 = long) */
1369 16, /* bitsize */
1370 FALSE, /* pc_relative */
1371 0, /* bitpos */
1372 complain_overflow_signed, /* complain_on_overflow */
1373 bfd_elf_generic_reloc, /* special_function */
1374 "R_PPC_EMB_SDA21", /* name */
1375 FALSE, /* partial_inplace */
1376 0, /* src_mask */
1377 0xffff, /* dst_mask */
1378 FALSE), /* pcrel_offset */
1379
1380 /* Relocation not handled: R_PPC_EMB_MRKREF */
1381 /* Relocation not handled: R_PPC_EMB_RELSEC16 */
1382 /* Relocation not handled: R_PPC_EMB_RELST_LO */
1383 /* Relocation not handled: R_PPC_EMB_RELST_HI */
1384 /* Relocation not handled: R_PPC_EMB_RELST_HA */
1385 /* Relocation not handled: R_PPC_EMB_BIT_FLD */
1386
1387 /* PC relative relocation against either _SDA_BASE_ or _SDA2_BASE_, filling
1388 in the 16 bit signed offset from the appropriate base, and filling in the
1389 register field with the appropriate register (0, 2, or 13). */
1390 HOWTO (R_PPC_EMB_RELSDA, /* type */
1391 0, /* rightshift */
1392 1, /* size (0 = byte, 1 = short, 2 = long) */
1393 16, /* bitsize */
1394 FALSE, /* pc_relative */
1395 0, /* bitpos */
1396 complain_overflow_signed, /* complain_on_overflow */
1397 bfd_elf_generic_reloc, /* special_function */
1398 "R_PPC_EMB_RELSDA", /* name */
1399 FALSE, /* partial_inplace */
1400 0, /* src_mask */
1401 0xffff, /* dst_mask */
1402 FALSE), /* pcrel_offset */
1403
1404 /* A relative 8 bit branch. */
1405 HOWTO (R_PPC_VLE_REL8, /* type */
1406 1, /* rightshift */
1407 1, /* size (0 = byte, 1 = short, 2 = long) */
1408 8, /* bitsize */
1409 TRUE, /* pc_relative */
1410 0, /* bitpos */
1411 complain_overflow_signed, /* complain_on_overflow */
1412 bfd_elf_generic_reloc, /* special_function */
1413 "R_PPC_VLE_REL8", /* name */
1414 FALSE, /* partial_inplace */
1415 0, /* src_mask */
1416 0xff, /* dst_mask */
1417 TRUE), /* pcrel_offset */
1418
1419 /* A relative 15 bit branch. */
1420 HOWTO (R_PPC_VLE_REL15, /* type */
1421 1, /* rightshift */
1422 2, /* size (0 = byte, 1 = short, 2 = long) */
1423 15, /* bitsize */
1424 TRUE, /* pc_relative */
1425 1, /* bitpos */
1426 complain_overflow_signed, /* complain_on_overflow */
1427 bfd_elf_generic_reloc, /* special_function */
1428 "R_PPC_VLE_REL15", /* name */
1429 FALSE, /* partial_inplace */
1430 0, /* src_mask */
1431 0xfe, /* dst_mask */
1432 TRUE), /* pcrel_offset */
1433
1434 /* A relative 24 bit branch. */
1435 HOWTO (R_PPC_VLE_REL24, /* type */
1436 1, /* rightshift */
1437 2, /* size (0 = byte, 1 = short, 2 = long) */
1438 24, /* bitsize */
1439 TRUE, /* pc_relative */
1440 1, /* bitpos */
1441 complain_overflow_signed, /* complain_on_overflow */
1442 bfd_elf_generic_reloc, /* special_function */
1443 "R_PPC_VLE_REL24", /* name */
1444 FALSE, /* partial_inplace */
1445 0, /* src_mask */
1446 0x1fffffe, /* dst_mask */
1447 TRUE), /* pcrel_offset */
1448
1449 /* The 16 LSBS in split16a format. */
1450 HOWTO (R_PPC_VLE_LO16A, /* type */
1451 0, /* rightshift */
1452 2, /* size (0 = byte, 1 = short, 2 = long) */
1453 32, /* bitsize */
1454 FALSE, /* pc_relative */ /* FIXME: Does this apply to split relocs? */
1455 0, /* bitpos */
1456 complain_overflow_bitfield, /* complain_on_overflow */
1457 bfd_elf_generic_reloc, /* special_function */
1458 "R_PPC_VLE_LO16A", /* name */
1459 FALSE, /* partial_inplace */
1460 0, /* src_mask */
1461 0x1f00fff, /* dst_mask */
1462 FALSE), /* pcrel_offset */
1463
1464 /* The 16 LSBS in split16d format. */
1465 HOWTO (R_PPC_VLE_LO16D, /* type */
1466 0, /* rightshift */
1467 2, /* size (0 = byte, 1 = short, 2 = long) */
1468 32, /* bitsize */
1469 FALSE, /* pc_relative */
1470 0, /* bitpos */
1471 complain_overflow_bitfield, /* complain_on_overflow */
1472 bfd_elf_generic_reloc, /* special_function */
1473 "R_PPC_VLE_LO16D", /* name */
1474 FALSE, /* partial_inplace */
1475 0, /* src_mask */
1476 0x1f07ff, /* dst_mask */
1477 FALSE), /* pcrel_offset */
1478
1479 /* Bits 16-31 split16a format. */
1480 HOWTO (R_PPC_VLE_HI16A, /* type */
1481 0, /* rightshift */
1482 2, /* size (0 = byte, 1 = short, 2 = long) */
1483 32, /* bitsize */
1484 FALSE, /* pc_relative */
1485 0, /* bitpos */
1486 complain_overflow_bitfield, /* complain_on_overflow */
1487 bfd_elf_generic_reloc, /* special_function */
1488 "R_PPC_VLE_HI16A", /* name */
1489 FALSE, /* partial_inplace */
1490 0, /* src_mask */
1491 0x1f00fff, /* dst_mask */
1492 FALSE), /* pcrel_offset */
1493
1494 /* Bits 16-31 split16d format. */
1495 HOWTO (R_PPC_VLE_HI16D, /* type */
1496 0, /* rightshift */
1497 2, /* size (0 = byte, 1 = short, 2 = long) */
1498 32, /* bitsize */
1499 FALSE, /* pc_relative */
1500 0, /* bitpos */
1501 complain_overflow_bitfield, /* complain_on_overflow */
1502 bfd_elf_generic_reloc, /* special_function */
1503 "R_PPC_VLE_HI16D", /* name */
1504 FALSE, /* partial_inplace */
1505 0, /* src_mask */
1506 0x1f07ff, /* dst_mask */
1507 FALSE), /* pcrel_offset */
1508
1509 /* Bits 16-31 (High Adjusted) in split16a format. */
1510 HOWTO (R_PPC_VLE_HA16A, /* type */
1511 0, /* rightshift */
1512 2, /* size (0 = byte, 1 = short, 2 = long) */
1513 32, /* bitsize */
1514 FALSE, /* pc_relative */
1515 0, /* bitpos */
1516 complain_overflow_bitfield, /* complain_on_overflow */
1517 bfd_elf_generic_reloc, /* special_function */
1518 "R_PPC_VLE_HA16A", /* name */
1519 FALSE, /* partial_inplace */
1520 0, /* src_mask */
1521 0x1f00fff, /* dst_mask */
1522 FALSE), /* pcrel_offset */
1523
1524 /* Bits 16-31 (High Adjusted) in split16d format. */
1525 HOWTO (R_PPC_VLE_HA16D, /* type */
1526 0, /* rightshift */
1527 2, /* size (0 = byte, 1 = short, 2 = long) */
1528 32, /* bitsize */
1529 FALSE, /* pc_relative */
1530 0, /* bitpos */
1531 complain_overflow_bitfield, /* complain_on_overflow */
1532 bfd_elf_generic_reloc, /* special_function */
1533 "R_PPC_VLE_HA16D", /* name */
1534 FALSE, /* partial_inplace */
1535 0, /* src_mask */
1536 0x1f07ff, /* dst_mask */
1537 FALSE), /* pcrel_offset */
1538
1539 /* This reloc does nothing. */
1540 HOWTO (R_PPC_VLE_SDA21, /* type */
1541 0, /* rightshift */
1542 2, /* size (0 = byte, 1 = short, 2 = long) */
1543 32, /* bitsize */
1544 FALSE, /* pc_relative */
1545 0, /* bitpos */
1546 complain_overflow_bitfield, /* complain_on_overflow */
1547 bfd_elf_generic_reloc, /* special_function */
1548 "R_PPC_VLE_SDA21", /* name */
1549 FALSE, /* partial_inplace */
1550 0, /* src_mask */
1551 0xffff, /* dst_mask */
1552 FALSE), /* pcrel_offset */
1553
1554 /* This reloc does nothing. */
1555 HOWTO (R_PPC_VLE_SDA21_LO, /* type */
1556 0, /* rightshift */
1557 2, /* size (0 = byte, 1 = short, 2 = long) */
1558 32, /* bitsize */
1559 FALSE, /* pc_relative */
1560 0, /* bitpos */
1561 complain_overflow_bitfield, /* complain_on_overflow */
1562 bfd_elf_generic_reloc, /* special_function */
1563 "R_PPC_VLE_SDA21_LO", /* name */
1564 FALSE, /* partial_inplace */
1565 0, /* src_mask */
1566 0, /* dst_mask */
1567 FALSE), /* pcrel_offset */
1568
1569 /* The 16 LSBS relative to _SDA_BASE_ in split16a format. */
1570 HOWTO (R_PPC_VLE_SDAREL_LO16A,/* type */
1571 0, /* rightshift */
1572 2, /* size (0 = byte, 1 = short, 2 = long) */
1573 32, /* bitsize */
1574 FALSE, /* pc_relative */
1575 0, /* bitpos */
1576 complain_overflow_bitfield, /* complain_on_overflow */
1577 bfd_elf_generic_reloc, /* special_function */
1578 "R_PPC_VLE_SDAREL_LO16A", /* name */
1579 FALSE, /* partial_inplace */
1580 0, /* src_mask */
1581 0x1f00fff, /* dst_mask */
1582 FALSE), /* pcrel_offset */
1583
1584 /* The 16 LSBS relative to _SDA_BASE_ in split16d format. */
1585 /* This reloc does nothing. */
1586 HOWTO (R_PPC_VLE_SDAREL_LO16D, /* type */
1587 0, /* rightshift */
1588 2, /* size (0 = byte, 1 = short, 2 = long) */
1589 32, /* bitsize */
1590 FALSE, /* pc_relative */
1591 0, /* bitpos */
1592 complain_overflow_bitfield, /* complain_on_overflow */
1593 bfd_elf_generic_reloc, /* special_function */
1594 "R_PPC_VLE_SDAREL_LO16D", /* name */
1595 FALSE, /* partial_inplace */
1596 0, /* src_mask */
1597 0x1f07ff, /* dst_mask */
1598 FALSE), /* pcrel_offset */
1599
1600 /* Bits 16-31 relative to _SDA_BASE_ in split16a format. */
1601 HOWTO (R_PPC_VLE_SDAREL_HI16A, /* type */
1602 0, /* rightshift */
1603 2, /* size (0 = byte, 1 = short, 2 = long) */
1604 32, /* bitsize */
1605 FALSE, /* pc_relative */
1606 0, /* bitpos */
1607 complain_overflow_bitfield, /* complain_on_overflow */
1608 bfd_elf_generic_reloc, /* special_function */
1609 "R_PPC_VLE_SDAREL_HI16A", /* name */
1610 FALSE, /* partial_inplace */
1611 0, /* src_mask */
1612 0x1f00fff, /* dst_mask */
1613 FALSE), /* pcrel_offset */
1614
1615 /* Bits 16-31 relative to _SDA_BASE_ in split16d format. */
1616 HOWTO (R_PPC_VLE_SDAREL_HI16D, /* type */
1617 0, /* rightshift */
1618 2, /* size (0 = byte, 1 = short, 2 = long) */
1619 32, /* bitsize */
1620 FALSE, /* pc_relative */
1621 0, /* bitpos */
1622 complain_overflow_bitfield, /* complain_on_overflow */
1623 bfd_elf_generic_reloc, /* special_function */
1624 "R_PPC_VLE_SDAREL_HI16D", /* name */
1625 FALSE, /* partial_inplace */
1626 0, /* src_mask */
1627 0x1f07ff, /* dst_mask */
1628 FALSE), /* pcrel_offset */
1629
1630 /* Bits 16-31 (HA) relative to _SDA_BASE split16a format. */
1631 HOWTO (R_PPC_VLE_SDAREL_HA16A, /* type */
1632 0, /* rightshift */
1633 2, /* size (0 = byte, 1 = short, 2 = long) */
1634 32, /* bitsize */
1635 FALSE, /* pc_relative */
1636 0, /* bitpos */
1637 complain_overflow_bitfield, /* complain_on_overflow */
1638 bfd_elf_generic_reloc, /* special_function */
1639 "R_PPC_VLE_SDAREL_HA16A", /* name */
1640 FALSE, /* partial_inplace */
1641 0, /* src_mask */
1642 0x1f00fff, /* dst_mask */
1643 FALSE), /* pcrel_offset */
1644
1645 /* Bits 16-31 (HA) relative to _SDA_BASE split16d format. */
1646 HOWTO (R_PPC_VLE_SDAREL_HA16D, /* type */
1647 0, /* rightshift */
1648 2, /* size (0 = byte, 1 = short, 2 = long) */
1649 32, /* bitsize */
1650 FALSE, /* pc_relative */
1651 0, /* bitpos */
1652 complain_overflow_bitfield, /* complain_on_overflow */
1653 bfd_elf_generic_reloc, /* special_function */
1654 "R_PPC_VLE_SDAREL_HA16D", /* name */
1655 FALSE, /* partial_inplace */
1656 0, /* src_mask */
1657 0x1f07ff, /* dst_mask */
1658 FALSE), /* pcrel_offset */
1659
1660 HOWTO (R_PPC_IRELATIVE, /* type */
1661 0, /* rightshift */
1662 2, /* size (0 = byte, 1 = short, 2 = long) */
1663 32, /* bitsize */
1664 FALSE, /* pc_relative */
1665 0, /* bitpos */
1666 complain_overflow_bitfield, /* complain_on_overflow */
1667 bfd_elf_generic_reloc, /* special_function */
1668 "R_PPC_IRELATIVE", /* name */
1669 FALSE, /* partial_inplace */
1670 0, /* src_mask */
1671 0xffffffff, /* dst_mask */
1672 FALSE), /* pcrel_offset */
1673
1674 /* A 16 bit relative relocation. */
1675 HOWTO (R_PPC_REL16, /* type */
1676 0, /* rightshift */
1677 1, /* size (0 = byte, 1 = short, 2 = long) */
1678 16, /* bitsize */
1679 TRUE, /* pc_relative */
1680 0, /* bitpos */
1681 complain_overflow_bitfield, /* complain_on_overflow */
1682 bfd_elf_generic_reloc, /* special_function */
1683 "R_PPC_REL16", /* name */
1684 FALSE, /* partial_inplace */
1685 0, /* src_mask */
1686 0xffff, /* dst_mask */
1687 TRUE), /* pcrel_offset */
1688
1689 /* A 16 bit relative relocation without overflow. */
1690 HOWTO (R_PPC_REL16_LO, /* type */
1691 0, /* rightshift */
1692 1, /* size (0 = byte, 1 = short, 2 = long) */
1693 16, /* bitsize */
1694 TRUE, /* pc_relative */
1695 0, /* bitpos */
1696 complain_overflow_dont,/* complain_on_overflow */
1697 bfd_elf_generic_reloc, /* special_function */
1698 "R_PPC_REL16_LO", /* name */
1699 FALSE, /* partial_inplace */
1700 0, /* src_mask */
1701 0xffff, /* dst_mask */
1702 TRUE), /* pcrel_offset */
1703
1704 /* The high order 16 bits of a relative address. */
1705 HOWTO (R_PPC_REL16_HI, /* type */
1706 16, /* rightshift */
1707 1, /* size (0 = byte, 1 = short, 2 = long) */
1708 16, /* bitsize */
1709 TRUE, /* pc_relative */
1710 0, /* bitpos */
1711 complain_overflow_dont, /* complain_on_overflow */
1712 bfd_elf_generic_reloc, /* special_function */
1713 "R_PPC_REL16_HI", /* name */
1714 FALSE, /* partial_inplace */
1715 0, /* src_mask */
1716 0xffff, /* dst_mask */
1717 TRUE), /* pcrel_offset */
1718
1719 /* The high order 16 bits of a relative address, plus 1 if the contents of
1720 the low 16 bits, treated as a signed number, is negative. */
1721 HOWTO (R_PPC_REL16_HA, /* type */
1722 16, /* rightshift */
1723 1, /* size (0 = byte, 1 = short, 2 = long) */
1724 16, /* bitsize */
1725 TRUE, /* pc_relative */
1726 0, /* bitpos */
1727 complain_overflow_dont, /* complain_on_overflow */
1728 ppc_elf_addr16_ha_reloc, /* special_function */
1729 "R_PPC_REL16_HA", /* name */
1730 FALSE, /* partial_inplace */
1731 0, /* src_mask */
1732 0xffff, /* dst_mask */
1733 TRUE), /* pcrel_offset */
1734
1735 /* GNU extension to record C++ vtable hierarchy. */
1736 HOWTO (R_PPC_GNU_VTINHERIT, /* type */
1737 0, /* rightshift */
1738 0, /* size (0 = byte, 1 = short, 2 = long) */
1739 0, /* bitsize */
1740 FALSE, /* pc_relative */
1741 0, /* bitpos */
1742 complain_overflow_dont, /* complain_on_overflow */
1743 NULL, /* special_function */
1744 "R_PPC_GNU_VTINHERIT", /* name */
1745 FALSE, /* partial_inplace */
1746 0, /* src_mask */
1747 0, /* dst_mask */
1748 FALSE), /* pcrel_offset */
1749
1750 /* GNU extension to record C++ vtable member usage. */
1751 HOWTO (R_PPC_GNU_VTENTRY, /* type */
1752 0, /* rightshift */
1753 0, /* size (0 = byte, 1 = short, 2 = long) */
1754 0, /* bitsize */
1755 FALSE, /* pc_relative */
1756 0, /* bitpos */
1757 complain_overflow_dont, /* complain_on_overflow */
1758 NULL, /* special_function */
1759 "R_PPC_GNU_VTENTRY", /* name */
1760 FALSE, /* partial_inplace */
1761 0, /* src_mask */
1762 0, /* dst_mask */
1763 FALSE), /* pcrel_offset */
1764
1765 /* Phony reloc to handle AIX style TOC entries. */
1766 HOWTO (R_PPC_TOC16, /* type */
1767 0, /* rightshift */
1768 1, /* size (0 = byte, 1 = short, 2 = long) */
1769 16, /* bitsize */
1770 FALSE, /* pc_relative */
1771 0, /* bitpos */
1772 complain_overflow_signed, /* complain_on_overflow */
1773 bfd_elf_generic_reloc, /* special_function */
1774 "R_PPC_TOC16", /* name */
1775 FALSE, /* partial_inplace */
1776 0, /* src_mask */
1777 0xffff, /* dst_mask */
1778 FALSE), /* pcrel_offset */
1779 };
1780 \f
1781 /* Initialize the ppc_elf_howto_table, so that linear accesses can be done. */
1782
1783 static void
1784 ppc_elf_howto_init (void)
1785 {
1786 unsigned int i, type;
1787
1788 for (i = 0;
1789 i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]);
1790 i++)
1791 {
1792 type = ppc_elf_howto_raw[i].type;
1793 if (type >= (sizeof (ppc_elf_howto_table)
1794 / sizeof (ppc_elf_howto_table[0])))
1795 abort ();
1796 ppc_elf_howto_table[type] = &ppc_elf_howto_raw[i];
1797 }
1798 }
1799
1800 static reloc_howto_type *
1801 ppc_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1802 bfd_reloc_code_real_type code)
1803 {
1804 enum elf_ppc_reloc_type r;
1805
1806 /* Initialize howto table if not already done. */
1807 if (!ppc_elf_howto_table[R_PPC_ADDR32])
1808 ppc_elf_howto_init ();
1809
1810 switch (code)
1811 {
1812 default:
1813 return NULL;
1814
1815 case BFD_RELOC_NONE: r = R_PPC_NONE; break;
1816 case BFD_RELOC_32: r = R_PPC_ADDR32; break;
1817 case BFD_RELOC_PPC_BA26: r = R_PPC_ADDR24; break;
1818 case BFD_RELOC_16: r = R_PPC_ADDR16; break;
1819 case BFD_RELOC_LO16: r = R_PPC_ADDR16_LO; break;
1820 case BFD_RELOC_HI16: r = R_PPC_ADDR16_HI; break;
1821 case BFD_RELOC_HI16_S: r = R_PPC_ADDR16_HA; break;
1822 case BFD_RELOC_PPC_BA16: r = R_PPC_ADDR14; break;
1823 case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC_ADDR14_BRTAKEN; break;
1824 case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC_ADDR14_BRNTAKEN; break;
1825 case BFD_RELOC_PPC_B26: r = R_PPC_REL24; break;
1826 case BFD_RELOC_PPC_B16: r = R_PPC_REL14; break;
1827 case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC_REL14_BRTAKEN; break;
1828 case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC_REL14_BRNTAKEN; break;
1829 case BFD_RELOC_16_GOTOFF: r = R_PPC_GOT16; break;
1830 case BFD_RELOC_LO16_GOTOFF: r = R_PPC_GOT16_LO; break;
1831 case BFD_RELOC_HI16_GOTOFF: r = R_PPC_GOT16_HI; break;
1832 case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC_GOT16_HA; break;
1833 case BFD_RELOC_24_PLT_PCREL: r = R_PPC_PLTREL24; break;
1834 case BFD_RELOC_PPC_COPY: r = R_PPC_COPY; break;
1835 case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC_GLOB_DAT; break;
1836 case BFD_RELOC_PPC_LOCAL24PC: r = R_PPC_LOCAL24PC; break;
1837 case BFD_RELOC_32_PCREL: r = R_PPC_REL32; break;
1838 case BFD_RELOC_32_PLTOFF: r = R_PPC_PLT32; break;
1839 case BFD_RELOC_32_PLT_PCREL: r = R_PPC_PLTREL32; break;
1840 case BFD_RELOC_LO16_PLTOFF: r = R_PPC_PLT16_LO; break;
1841 case BFD_RELOC_HI16_PLTOFF: r = R_PPC_PLT16_HI; break;
1842 case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC_PLT16_HA; break;
1843 case BFD_RELOC_GPREL16: r = R_PPC_SDAREL16; break;
1844 case BFD_RELOC_16_BASEREL: r = R_PPC_SECTOFF; break;
1845 case BFD_RELOC_LO16_BASEREL: r = R_PPC_SECTOFF_LO; break;
1846 case BFD_RELOC_HI16_BASEREL: r = R_PPC_SECTOFF_HI; break;
1847 case BFD_RELOC_HI16_S_BASEREL: r = R_PPC_SECTOFF_HA; break;
1848 case BFD_RELOC_CTOR: r = R_PPC_ADDR32; break;
1849 case BFD_RELOC_PPC_TOC16: r = R_PPC_TOC16; break;
1850 case BFD_RELOC_PPC_TLS: r = R_PPC_TLS; break;
1851 case BFD_RELOC_PPC_TLSGD: r = R_PPC_TLSGD; break;
1852 case BFD_RELOC_PPC_TLSLD: r = R_PPC_TLSLD; break;
1853 case BFD_RELOC_PPC_DTPMOD: r = R_PPC_DTPMOD32; break;
1854 case BFD_RELOC_PPC_TPREL16: r = R_PPC_TPREL16; break;
1855 case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC_TPREL16_LO; break;
1856 case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC_TPREL16_HI; break;
1857 case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC_TPREL16_HA; break;
1858 case BFD_RELOC_PPC_TPREL: r = R_PPC_TPREL32; break;
1859 case BFD_RELOC_PPC_DTPREL16: r = R_PPC_DTPREL16; break;
1860 case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC_DTPREL16_LO; break;
1861 case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC_DTPREL16_HI; break;
1862 case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC_DTPREL16_HA; break;
1863 case BFD_RELOC_PPC_DTPREL: r = R_PPC_DTPREL32; break;
1864 case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC_GOT_TLSGD16; break;
1865 case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC_GOT_TLSGD16_LO; break;
1866 case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC_GOT_TLSGD16_HI; break;
1867 case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC_GOT_TLSGD16_HA; break;
1868 case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC_GOT_TLSLD16; break;
1869 case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC_GOT_TLSLD16_LO; break;
1870 case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC_GOT_TLSLD16_HI; break;
1871 case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC_GOT_TLSLD16_HA; break;
1872 case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC_GOT_TPREL16; break;
1873 case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC_GOT_TPREL16_LO; break;
1874 case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC_GOT_TPREL16_HI; break;
1875 case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC_GOT_TPREL16_HA; break;
1876 case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC_GOT_DTPREL16; break;
1877 case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC_GOT_DTPREL16_LO; break;
1878 case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC_GOT_DTPREL16_HI; break;
1879 case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC_GOT_DTPREL16_HA; break;
1880 case BFD_RELOC_PPC_EMB_NADDR32: r = R_PPC_EMB_NADDR32; break;
1881 case BFD_RELOC_PPC_EMB_NADDR16: r = R_PPC_EMB_NADDR16; break;
1882 case BFD_RELOC_PPC_EMB_NADDR16_LO: r = R_PPC_EMB_NADDR16_LO; break;
1883 case BFD_RELOC_PPC_EMB_NADDR16_HI: r = R_PPC_EMB_NADDR16_HI; break;
1884 case BFD_RELOC_PPC_EMB_NADDR16_HA: r = R_PPC_EMB_NADDR16_HA; break;
1885 case BFD_RELOC_PPC_EMB_SDAI16: r = R_PPC_EMB_SDAI16; break;
1886 case BFD_RELOC_PPC_EMB_SDA2I16: r = R_PPC_EMB_SDA2I16; break;
1887 case BFD_RELOC_PPC_EMB_SDA2REL: r = R_PPC_EMB_SDA2REL; break;
1888 case BFD_RELOC_PPC_EMB_SDA21: r = R_PPC_EMB_SDA21; break;
1889 case BFD_RELOC_PPC_EMB_MRKREF: r = R_PPC_EMB_MRKREF; break;
1890 case BFD_RELOC_PPC_EMB_RELSEC16: r = R_PPC_EMB_RELSEC16; break;
1891 case BFD_RELOC_PPC_EMB_RELST_LO: r = R_PPC_EMB_RELST_LO; break;
1892 case BFD_RELOC_PPC_EMB_RELST_HI: r = R_PPC_EMB_RELST_HI; break;
1893 case BFD_RELOC_PPC_EMB_RELST_HA: r = R_PPC_EMB_RELST_HA; break;
1894 case BFD_RELOC_PPC_EMB_BIT_FLD: r = R_PPC_EMB_BIT_FLD; break;
1895 case BFD_RELOC_PPC_EMB_RELSDA: r = R_PPC_EMB_RELSDA; break;
1896 case BFD_RELOC_PPC_VLE_REL8: r = R_PPC_VLE_REL8; break;
1897 case BFD_RELOC_PPC_VLE_REL15: r = R_PPC_VLE_REL15; break;
1898 case BFD_RELOC_PPC_VLE_REL24: r = R_PPC_VLE_REL24; break;
1899 case BFD_RELOC_PPC_VLE_LO16A: r = R_PPC_VLE_LO16A; break;
1900 case BFD_RELOC_PPC_VLE_LO16D: r = R_PPC_VLE_LO16D; break;
1901 case BFD_RELOC_PPC_VLE_HI16A: r = R_PPC_VLE_HI16A; break;
1902 case BFD_RELOC_PPC_VLE_HI16D: r = R_PPC_VLE_HI16D; break;
1903 case BFD_RELOC_PPC_VLE_HA16A: r = R_PPC_VLE_HA16A; break;
1904 case BFD_RELOC_PPC_VLE_HA16D: r = R_PPC_VLE_HA16D; break;
1905 case BFD_RELOC_PPC_VLE_SDA21: r = R_PPC_VLE_SDA21; break;
1906 case BFD_RELOC_PPC_VLE_SDA21_LO: r = R_PPC_VLE_SDA21_LO; break;
1907 case BFD_RELOC_PPC_VLE_SDAREL_LO16A:
1908 r = R_PPC_VLE_SDAREL_LO16A;
1909 break;
1910 case BFD_RELOC_PPC_VLE_SDAREL_LO16D:
1911 r = R_PPC_VLE_SDAREL_LO16D;
1912 break;
1913 case BFD_RELOC_PPC_VLE_SDAREL_HI16A:
1914 r = R_PPC_VLE_SDAREL_HI16A;
1915 break;
1916 case BFD_RELOC_PPC_VLE_SDAREL_HI16D:
1917 r = R_PPC_VLE_SDAREL_HI16D;
1918 break;
1919 case BFD_RELOC_PPC_VLE_SDAREL_HA16A:
1920 r = R_PPC_VLE_SDAREL_HA16A;
1921 break;
1922 case BFD_RELOC_PPC_VLE_SDAREL_HA16D:
1923 r = R_PPC_VLE_SDAREL_HA16D;
1924 break;
1925 case BFD_RELOC_16_PCREL: r = R_PPC_REL16; break;
1926 case BFD_RELOC_LO16_PCREL: r = R_PPC_REL16_LO; break;
1927 case BFD_RELOC_HI16_PCREL: r = R_PPC_REL16_HI; break;
1928 case BFD_RELOC_HI16_S_PCREL: r = R_PPC_REL16_HA; break;
1929 case BFD_RELOC_VTABLE_INHERIT: r = R_PPC_GNU_VTINHERIT; break;
1930 case BFD_RELOC_VTABLE_ENTRY: r = R_PPC_GNU_VTENTRY; break;
1931 }
1932
1933 return ppc_elf_howto_table[r];
1934 };
1935
1936 static reloc_howto_type *
1937 ppc_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1938 const char *r_name)
1939 {
1940 unsigned int i;
1941
1942 for (i = 0;
1943 i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]);
1944 i++)
1945 if (ppc_elf_howto_raw[i].name != NULL
1946 && strcasecmp (ppc_elf_howto_raw[i].name, r_name) == 0)
1947 return &ppc_elf_howto_raw[i];
1948
1949 return NULL;
1950 }
1951
1952 /* Set the howto pointer for a PowerPC ELF reloc. */
1953
1954 static void
1955 ppc_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED,
1956 arelent *cache_ptr,
1957 Elf_Internal_Rela *dst)
1958 {
1959 /* Initialize howto table if not already done. */
1960 if (!ppc_elf_howto_table[R_PPC_ADDR32])
1961 ppc_elf_howto_init ();
1962
1963 BFD_ASSERT (ELF32_R_TYPE (dst->r_info) < (unsigned int) R_PPC_max);
1964 cache_ptr->howto = ppc_elf_howto_table[ELF32_R_TYPE (dst->r_info)];
1965
1966 /* Just because the above assert didn't trigger doesn't mean that
1967 ELF32_R_TYPE (dst->r_info) is necessarily a valid relocation. */
1968 if (!cache_ptr->howto)
1969 {
1970 (*_bfd_error_handler) (_("%B: invalid relocation type %d"),
1971 abfd, ELF32_R_TYPE (dst->r_info));
1972 bfd_set_error (bfd_error_bad_value);
1973
1974 cache_ptr->howto = ppc_elf_howto_table[R_PPC_NONE];
1975 }
1976 }
1977
1978 /* Handle the R_PPC_ADDR16_HA and R_PPC_REL16_HA relocs. */
1979
1980 static bfd_reloc_status_type
1981 ppc_elf_addr16_ha_reloc (bfd *abfd ATTRIBUTE_UNUSED,
1982 arelent *reloc_entry,
1983 asymbol *symbol,
1984 void *data ATTRIBUTE_UNUSED,
1985 asection *input_section,
1986 bfd *output_bfd,
1987 char **error_message ATTRIBUTE_UNUSED)
1988 {
1989 bfd_vma relocation;
1990
1991 if (output_bfd != NULL)
1992 {
1993 reloc_entry->address += input_section->output_offset;
1994 return bfd_reloc_ok;
1995 }
1996
1997 if (reloc_entry->address > bfd_get_section_limit (abfd, input_section))
1998 return bfd_reloc_outofrange;
1999
2000 if (bfd_is_com_section (symbol->section))
2001 relocation = 0;
2002 else
2003 relocation = symbol->value;
2004
2005 relocation += symbol->section->output_section->vma;
2006 relocation += symbol->section->output_offset;
2007 relocation += reloc_entry->addend;
2008 if (reloc_entry->howto->pc_relative)
2009 relocation -= reloc_entry->address;
2010
2011 reloc_entry->addend += (relocation & 0x8000) << 1;
2012
2013 return bfd_reloc_continue;
2014 }
2015
2016 static bfd_reloc_status_type
2017 ppc_elf_unhandled_reloc (bfd *abfd,
2018 arelent *reloc_entry,
2019 asymbol *symbol,
2020 void *data,
2021 asection *input_section,
2022 bfd *output_bfd,
2023 char **error_message)
2024 {
2025 /* If this is a relocatable link (output_bfd test tells us), just
2026 call the generic function. Any adjustment will be done at final
2027 link time. */
2028 if (output_bfd != NULL)
2029 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2030 input_section, output_bfd, error_message);
2031
2032 if (error_message != NULL)
2033 {
2034 static char buf[60];
2035 sprintf (buf, _("generic linker can't handle %s"),
2036 reloc_entry->howto->name);
2037 *error_message = buf;
2038 }
2039 return bfd_reloc_dangerous;
2040 }
2041 \f
2042 /* Sections created by the linker. */
2043
2044 typedef struct elf_linker_section
2045 {
2046 /* Pointer to the bfd section. */
2047 asection *section;
2048 /* Section name. */
2049 const char *name;
2050 /* Associated bss section name. */
2051 const char *bss_name;
2052 /* Associated symbol name. */
2053 const char *sym_name;
2054 /* Associated symbol. */
2055 struct elf_link_hash_entry *sym;
2056 } elf_linker_section_t;
2057
2058 /* Linked list of allocated pointer entries. This hangs off of the
2059 symbol lists, and provides allows us to return different pointers,
2060 based on different addend's. */
2061
2062 typedef struct elf_linker_section_pointers
2063 {
2064 /* next allocated pointer for this symbol */
2065 struct elf_linker_section_pointers *next;
2066 /* offset of pointer from beginning of section */
2067 bfd_vma offset;
2068 /* addend used */
2069 bfd_vma addend;
2070 /* which linker section this is */
2071 elf_linker_section_t *lsect;
2072 } elf_linker_section_pointers_t;
2073
2074 struct ppc_elf_obj_tdata
2075 {
2076 struct elf_obj_tdata elf;
2077
2078 /* A mapping from local symbols to offsets into the various linker
2079 sections added. This is index by the symbol index. */
2080 elf_linker_section_pointers_t **linker_section_pointers;
2081
2082 /* Flags used to auto-detect plt type. */
2083 unsigned int makes_plt_call : 1;
2084 unsigned int has_rel16 : 1;
2085 };
2086
2087 #define ppc_elf_tdata(bfd) \
2088 ((struct ppc_elf_obj_tdata *) (bfd)->tdata.any)
2089
2090 #define elf_local_ptr_offsets(bfd) \
2091 (ppc_elf_tdata (bfd)->linker_section_pointers)
2092
2093 #define is_ppc_elf(bfd) \
2094 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
2095 && elf_object_id (bfd) == PPC32_ELF_DATA)
2096
2097 /* Override the generic function because we store some extras. */
2098
2099 static bfd_boolean
2100 ppc_elf_mkobject (bfd *abfd)
2101 {
2102 return bfd_elf_allocate_object (abfd, sizeof (struct ppc_elf_obj_tdata),
2103 PPC32_ELF_DATA);
2104 }
2105
2106 /* Fix bad default arch selected for a 32 bit input bfd when the
2107 default is 64 bit. */
2108
2109 static bfd_boolean
2110 ppc_elf_object_p (bfd *abfd)
2111 {
2112 if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 64)
2113 {
2114 Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd);
2115
2116 if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS32)
2117 {
2118 /* Relies on arch after 64 bit default being 32 bit default. */
2119 abfd->arch_info = abfd->arch_info->next;
2120 BFD_ASSERT (abfd->arch_info->bits_per_word == 32);
2121 }
2122 }
2123 return TRUE;
2124 }
2125
2126 /* Function to set whether a module needs the -mrelocatable bit set. */
2127
2128 static bfd_boolean
2129 ppc_elf_set_private_flags (bfd *abfd, flagword flags)
2130 {
2131 BFD_ASSERT (!elf_flags_init (abfd)
2132 || elf_elfheader (abfd)->e_flags == flags);
2133
2134 elf_elfheader (abfd)->e_flags = flags;
2135 elf_flags_init (abfd) = TRUE;
2136 return TRUE;
2137 }
2138
2139 /* Support for core dump NOTE sections. */
2140
2141 static bfd_boolean
2142 ppc_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
2143 {
2144 int offset;
2145 unsigned int size;
2146
2147 switch (note->descsz)
2148 {
2149 default:
2150 return FALSE;
2151
2152 case 268: /* Linux/PPC. */
2153 /* pr_cursig */
2154 elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
2155
2156 /* pr_pid */
2157 elf_tdata (abfd)->core_lwpid = bfd_get_32 (abfd, note->descdata + 24);
2158
2159 /* pr_reg */
2160 offset = 72;
2161 size = 192;
2162
2163 break;
2164 }
2165
2166 /* Make a ".reg/999" section. */
2167 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
2168 size, note->descpos + offset);
2169 }
2170
2171 static bfd_boolean
2172 ppc_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
2173 {
2174 switch (note->descsz)
2175 {
2176 default:
2177 return FALSE;
2178
2179 case 128: /* Linux/PPC elf_prpsinfo. */
2180 elf_tdata (abfd)->core_pid
2181 = bfd_get_32 (abfd, note->descdata + 16);
2182 elf_tdata (abfd)->core_program
2183 = _bfd_elfcore_strndup (abfd, note->descdata + 32, 16);
2184 elf_tdata (abfd)->core_command
2185 = _bfd_elfcore_strndup (abfd, note->descdata + 48, 80);
2186 }
2187
2188 /* Note that for some reason, a spurious space is tacked
2189 onto the end of the args in some (at least one anyway)
2190 implementations, so strip it off if it exists. */
2191
2192 {
2193 char *command = elf_tdata (abfd)->core_command;
2194 int n = strlen (command);
2195
2196 if (0 < n && command[n - 1] == ' ')
2197 command[n - 1] = '\0';
2198 }
2199
2200 return TRUE;
2201 }
2202
2203 static char *
2204 ppc_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type, ...)
2205 {
2206 switch (note_type)
2207 {
2208 default:
2209 return NULL;
2210
2211 case NT_PRPSINFO:
2212 {
2213 char data[128];
2214 va_list ap;
2215
2216 va_start (ap, note_type);
2217 memset (data, 0, sizeof (data));
2218 strncpy (data + 32, va_arg (ap, const char *), 16);
2219 strncpy (data + 48, va_arg (ap, const char *), 80);
2220 va_end (ap);
2221 return elfcore_write_note (abfd, buf, bufsiz,
2222 "CORE", note_type, data, sizeof (data));
2223 }
2224
2225 case NT_PRSTATUS:
2226 {
2227 char data[268];
2228 va_list ap;
2229 long pid;
2230 int cursig;
2231 const void *greg;
2232
2233 va_start (ap, note_type);
2234 memset (data, 0, 72);
2235 pid = va_arg (ap, long);
2236 bfd_put_32 (abfd, pid, data + 24);
2237 cursig = va_arg (ap, int);
2238 bfd_put_16 (abfd, cursig, data + 12);
2239 greg = va_arg (ap, const void *);
2240 memcpy (data + 72, greg, 192);
2241 memset (data + 264, 0, 4);
2242 va_end (ap);
2243 return elfcore_write_note (abfd, buf, bufsiz,
2244 "CORE", note_type, data, sizeof (data));
2245 }
2246 }
2247 }
2248
2249 static bfd_boolean
2250 ppc_elf_section_flags (flagword *flags ATTRIBUTE_UNUSED,
2251 const Elf_Internal_Shdr *hdr)
2252 {
2253 if (hdr->sh_flags & SHF_PPC_VLE)
2254 hdr->bfd_section->has_vle_insns = 1;
2255 return TRUE;
2256 }
2257
2258 static flagword
2259 ppc_elf_lookup_section_flags (char *flag_name)
2260 {
2261
2262 if (!strcmp (flag_name, "SHF_PPC_VLE"))
2263 return SHF_PPC_VLE;
2264
2265 return 0;
2266 }
2267
2268 /* Add the VLE flag if required. */
2269
2270 bfd_boolean
2271 ppc_elf_section_processing (bfd *abfd, Elf_Internal_Shdr *shdr)
2272 {
2273 if (bfd_get_mach (abfd) == bfd_mach_ppc_vle
2274 && (shdr->sh_flags & SHF_EXECINSTR) != 0)
2275 shdr->sh_flags |= SHF_PPC_VLE;
2276
2277 return TRUE;
2278 }
2279
2280 /* Return address for Ith PLT stub in section PLT, for relocation REL
2281 or (bfd_vma) -1 if it should not be included. */
2282
2283 static bfd_vma
2284 ppc_elf_plt_sym_val (bfd_vma i ATTRIBUTE_UNUSED,
2285 const asection *plt ATTRIBUTE_UNUSED,
2286 const arelent *rel)
2287 {
2288 return rel->address;
2289 }
2290
2291 /* Handle a PowerPC specific section when reading an object file. This
2292 is called when bfd_section_from_shdr finds a section with an unknown
2293 type. */
2294
2295 static bfd_boolean
2296 ppc_elf_section_from_shdr (bfd *abfd,
2297 Elf_Internal_Shdr *hdr,
2298 const char *name,
2299 int shindex)
2300 {
2301 asection *newsect;
2302 flagword flags;
2303
2304 if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
2305 return FALSE;
2306
2307 newsect = hdr->bfd_section;
2308 flags = bfd_get_section_flags (abfd, newsect);
2309 if (hdr->sh_flags & SHF_EXCLUDE)
2310 flags |= SEC_EXCLUDE;
2311
2312 if (hdr->sh_type == SHT_ORDERED)
2313 flags |= SEC_SORT_ENTRIES;
2314
2315 bfd_set_section_flags (abfd, newsect, flags);
2316 return TRUE;
2317 }
2318
2319 /* Set up any other section flags and such that may be necessary. */
2320
2321 static bfd_boolean
2322 ppc_elf_fake_sections (bfd *abfd ATTRIBUTE_UNUSED,
2323 Elf_Internal_Shdr *shdr,
2324 asection *asect)
2325 {
2326 if ((asect->flags & SEC_SORT_ENTRIES) != 0)
2327 shdr->sh_type = SHT_ORDERED;
2328
2329 return TRUE;
2330 }
2331
2332 /* If we have .sbss2 or .PPC.EMB.sbss0 output sections, we
2333 need to bump up the number of section headers. */
2334
2335 static int
2336 ppc_elf_additional_program_headers (bfd *abfd,
2337 struct bfd_link_info *info ATTRIBUTE_UNUSED)
2338 {
2339 asection *s;
2340 int ret = 0;
2341
2342 s = bfd_get_section_by_name (abfd, ".sbss2");
2343 if (s != NULL && (s->flags & SEC_ALLOC) != 0)
2344 ++ret;
2345
2346 s = bfd_get_section_by_name (abfd, ".PPC.EMB.sbss0");
2347 if (s != NULL && (s->flags & SEC_ALLOC) != 0)
2348 ++ret;
2349
2350 return ret;
2351 }
2352
2353 /* Modify the segment map for VLE executables. */
2354
2355 bfd_boolean
2356 ppc_elf_modify_segment_map (bfd *abfd,
2357 struct bfd_link_info *info ATTRIBUTE_UNUSED)
2358 {
2359 struct elf_segment_map *m, *n;
2360 bfd_size_type amt;
2361 unsigned int j, k;
2362 bfd_boolean sect0_vle, sectj_vle;
2363
2364 /* At this point in the link, output sections have already been sorted by
2365 LMA and assigned to segments. All that is left to do is to ensure
2366 there is no mixing of VLE & non-VLE sections in a text segment.
2367 If we find that case, we split the segment.
2368 We maintain the original output section order. */
2369
2370 for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next)
2371 {
2372 if (m->count == 0)
2373 continue;
2374
2375 sect0_vle = is_ppc_vle (m->sections[0]);
2376 for (j = 1; j < m->count; ++j)
2377 {
2378 if (is_ppc_vle (m->sections[j]) != sect0_vle)
2379 break;
2380 }
2381 if (j >= m->count)
2382 continue;
2383
2384 sectj_vle = is_ppc_vle (m->sections[j]);
2385
2386 /* sections 0..j-1 stay in this (current) segment,
2387 the remainder are put in a new segment.
2388 The scan resumes with the new segment. */
2389
2390 /* Fix the new segment. */
2391 amt = sizeof (struct elf_segment_map);
2392 amt += (m->count - j - 1) * sizeof (asection *);
2393 n = (struct elf_segment_map *) bfd_zalloc (abfd, amt);
2394 if (n == NULL)
2395 return FALSE;
2396
2397 n->p_type = PT_LOAD;
2398 n->p_flags = PF_X | PF_R;
2399 if (sectj_vle)
2400 n->p_flags |= PF_PPC_VLE;
2401 n->count = m->count - j;
2402 for (k = 0; k < n->count; ++k)
2403 {
2404 n->sections[k] = m->sections[j+k];
2405 m->sections[j+k] = NULL;
2406 }
2407 n->next = m->next;
2408 m->next = n;
2409
2410 /* Fix the current segment */
2411 m->count = j;
2412 }
2413
2414 return TRUE;
2415 }
2416
2417 /* Add extra PPC sections -- Note, for now, make .sbss2 and
2418 .PPC.EMB.sbss0 a normal section, and not a bss section so
2419 that the linker doesn't crater when trying to make more than
2420 2 sections. */
2421
2422 static const struct bfd_elf_special_section ppc_elf_special_sections[] =
2423 {
2424 { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, SHF_ALLOC + SHF_EXECINSTR },
2425 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2426 { STRING_COMMA_LEN (".sbss2"), -2, SHT_PROGBITS, SHF_ALLOC },
2427 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2428 { STRING_COMMA_LEN (".sdata2"), -2, SHT_PROGBITS, SHF_ALLOC },
2429 { STRING_COMMA_LEN (".tags"), 0, SHT_ORDERED, SHF_ALLOC },
2430 { STRING_COMMA_LEN (".PPC.EMB.apuinfo"), 0, SHT_NOTE, 0 },
2431 { STRING_COMMA_LEN (".PPC.EMB.sbss0"), 0, SHT_PROGBITS, SHF_ALLOC },
2432 { STRING_COMMA_LEN (".PPC.EMB.sdata0"), 0, SHT_PROGBITS, SHF_ALLOC },
2433 { NULL, 0, 0, 0, 0 }
2434 };
2435
2436 /* This is what we want for new plt/got. */
2437 static struct bfd_elf_special_section ppc_alt_plt =
2438 { STRING_COMMA_LEN (".plt"), 0, SHT_PROGBITS, SHF_ALLOC };
2439
2440 static const struct bfd_elf_special_section *
2441 ppc_elf_get_sec_type_attr (bfd *abfd ATTRIBUTE_UNUSED, asection *sec)
2442 {
2443 const struct bfd_elf_special_section *ssect;
2444
2445 /* See if this is one of the special sections. */
2446 if (sec->name == NULL)
2447 return NULL;
2448
2449 ssect = _bfd_elf_get_special_section (sec->name, ppc_elf_special_sections,
2450 sec->use_rela_p);
2451 if (ssect != NULL)
2452 {
2453 if (ssect == ppc_elf_special_sections && (sec->flags & SEC_LOAD) != 0)
2454 ssect = &ppc_alt_plt;
2455 return ssect;
2456 }
2457
2458 return _bfd_elf_get_sec_type_attr (abfd, sec);
2459 }
2460 \f
2461 /* Very simple linked list structure for recording apuinfo values. */
2462 typedef struct apuinfo_list
2463 {
2464 struct apuinfo_list *next;
2465 unsigned long value;
2466 }
2467 apuinfo_list;
2468
2469 static apuinfo_list *head;
2470 static bfd_boolean apuinfo_set;
2471
2472 static void
2473 apuinfo_list_init (void)
2474 {
2475 head = NULL;
2476 apuinfo_set = FALSE;
2477 }
2478
2479 static void
2480 apuinfo_list_add (unsigned long value)
2481 {
2482 apuinfo_list *entry = head;
2483
2484 while (entry != NULL)
2485 {
2486 if (entry->value == value)
2487 return;
2488 entry = entry->next;
2489 }
2490
2491 entry = bfd_malloc (sizeof (* entry));
2492 if (entry == NULL)
2493 return;
2494
2495 entry->value = value;
2496 entry->next = head;
2497 head = entry;
2498 }
2499
2500 static unsigned
2501 apuinfo_list_length (void)
2502 {
2503 apuinfo_list *entry;
2504 unsigned long count;
2505
2506 for (entry = head, count = 0;
2507 entry;
2508 entry = entry->next)
2509 ++ count;
2510
2511 return count;
2512 }
2513
2514 static inline unsigned long
2515 apuinfo_list_element (unsigned long number)
2516 {
2517 apuinfo_list * entry;
2518
2519 for (entry = head;
2520 entry && number --;
2521 entry = entry->next)
2522 ;
2523
2524 return entry ? entry->value : 0;
2525 }
2526
2527 static void
2528 apuinfo_list_finish (void)
2529 {
2530 apuinfo_list *entry;
2531
2532 for (entry = head; entry;)
2533 {
2534 apuinfo_list *next = entry->next;
2535 free (entry);
2536 entry = next;
2537 }
2538
2539 head = NULL;
2540 }
2541
2542 #define APUINFO_SECTION_NAME ".PPC.EMB.apuinfo"
2543 #define APUINFO_LABEL "APUinfo"
2544
2545 /* Scan the input BFDs and create a linked list of
2546 the APUinfo values that will need to be emitted. */
2547
2548 static void
2549 ppc_elf_begin_write_processing (bfd *abfd, struct bfd_link_info *link_info)
2550 {
2551 bfd *ibfd;
2552 asection *asec;
2553 char *buffer = NULL;
2554 bfd_size_type largest_input_size = 0;
2555 unsigned i;
2556 unsigned long length;
2557 const char *error_message = NULL;
2558
2559 if (link_info == NULL)
2560 return;
2561
2562 apuinfo_list_init ();
2563
2564 /* Read in the input sections contents. */
2565 for (ibfd = link_info->input_bfds; ibfd; ibfd = ibfd->link_next)
2566 {
2567 unsigned long datum;
2568
2569 asec = bfd_get_section_by_name (ibfd, APUINFO_SECTION_NAME);
2570 if (asec == NULL)
2571 continue;
2572
2573 error_message = _("corrupt %s section in %B");
2574 length = asec->size;
2575 if (length < 20)
2576 goto fail;
2577
2578 apuinfo_set = TRUE;
2579 if (largest_input_size < asec->size)
2580 {
2581 if (buffer)
2582 free (buffer);
2583 largest_input_size = asec->size;
2584 buffer = bfd_malloc (largest_input_size);
2585 if (!buffer)
2586 return;
2587 }
2588
2589 if (bfd_seek (ibfd, asec->filepos, SEEK_SET) != 0
2590 || (bfd_bread (buffer, length, ibfd) != length))
2591 {
2592 error_message = _("unable to read in %s section from %B");
2593 goto fail;
2594 }
2595
2596 /* Verify the contents of the header. Note - we have to
2597 extract the values this way in order to allow for a
2598 host whose endian-ness is different from the target. */
2599 datum = bfd_get_32 (ibfd, buffer);
2600 if (datum != sizeof APUINFO_LABEL)
2601 goto fail;
2602
2603 datum = bfd_get_32 (ibfd, buffer + 8);
2604 if (datum != 0x2)
2605 goto fail;
2606
2607 if (strcmp (buffer + 12, APUINFO_LABEL) != 0)
2608 goto fail;
2609
2610 /* Get the number of bytes used for apuinfo entries. */
2611 datum = bfd_get_32 (ibfd, buffer + 4);
2612 if (datum + 20 != length)
2613 goto fail;
2614
2615 /* Scan the apuinfo section, building a list of apuinfo numbers. */
2616 for (i = 0; i < datum; i += 4)
2617 apuinfo_list_add (bfd_get_32 (ibfd, buffer + 20 + i));
2618 }
2619
2620 error_message = NULL;
2621
2622 if (apuinfo_set)
2623 {
2624 /* Compute the size of the output section. */
2625 unsigned num_entries = apuinfo_list_length ();
2626
2627 /* Set the output section size, if it exists. */
2628 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2629
2630 if (asec && ! bfd_set_section_size (abfd, asec, 20 + num_entries * 4))
2631 {
2632 ibfd = abfd;
2633 error_message = _("warning: unable to set size of %s section in %B");
2634 }
2635 }
2636
2637 fail:
2638 if (buffer)
2639 free (buffer);
2640
2641 if (error_message)
2642 (*_bfd_error_handler) (error_message, ibfd, APUINFO_SECTION_NAME);
2643 }
2644
2645 /* Prevent the output section from accumulating the input sections'
2646 contents. We have already stored this in our linked list structure. */
2647
2648 static bfd_boolean
2649 ppc_elf_write_section (bfd *abfd ATTRIBUTE_UNUSED,
2650 struct bfd_link_info *link_info ATTRIBUTE_UNUSED,
2651 asection *asec,
2652 bfd_byte *contents ATTRIBUTE_UNUSED)
2653 {
2654 return apuinfo_set && strcmp (asec->name, APUINFO_SECTION_NAME) == 0;
2655 }
2656
2657 /* Finally we can generate the output section. */
2658
2659 static void
2660 ppc_elf_final_write_processing (bfd *abfd, bfd_boolean linker ATTRIBUTE_UNUSED)
2661 {
2662 bfd_byte *buffer;
2663 asection *asec;
2664 unsigned i;
2665 unsigned num_entries;
2666 bfd_size_type length;
2667
2668 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2669 if (asec == NULL)
2670 return;
2671
2672 if (!apuinfo_set)
2673 return;
2674
2675 length = asec->size;
2676 if (length < 20)
2677 return;
2678
2679 buffer = bfd_malloc (length);
2680 if (buffer == NULL)
2681 {
2682 (*_bfd_error_handler)
2683 (_("failed to allocate space for new APUinfo section."));
2684 return;
2685 }
2686
2687 /* Create the apuinfo header. */
2688 num_entries = apuinfo_list_length ();
2689 bfd_put_32 (abfd, sizeof APUINFO_LABEL, buffer);
2690 bfd_put_32 (abfd, num_entries * 4, buffer + 4);
2691 bfd_put_32 (abfd, 0x2, buffer + 8);
2692 strcpy ((char *) buffer + 12, APUINFO_LABEL);
2693
2694 length = 20;
2695 for (i = 0; i < num_entries; i++)
2696 {
2697 bfd_put_32 (abfd, apuinfo_list_element (i), buffer + length);
2698 length += 4;
2699 }
2700
2701 if (length != asec->size)
2702 (*_bfd_error_handler) (_("failed to compute new APUinfo section."));
2703
2704 if (! bfd_set_section_contents (abfd, asec, buffer, (file_ptr) 0, length))
2705 (*_bfd_error_handler) (_("failed to install new APUinfo section."));
2706
2707 free (buffer);
2708
2709 apuinfo_list_finish ();
2710 }
2711 \f
2712 static bfd_boolean
2713 is_nonpic_glink_stub (bfd *abfd, asection *glink, bfd_vma off)
2714 {
2715 bfd_byte buf[GLINK_ENTRY_SIZE];
2716
2717 if (!bfd_get_section_contents (abfd, glink, buf, off, GLINK_ENTRY_SIZE))
2718 return FALSE;
2719
2720 return ((bfd_get_32 (abfd, buf + 0) & 0xffff0000) == LIS_11
2721 && (bfd_get_32 (abfd, buf + 4) & 0xffff0000) == LWZ_11_11
2722 && bfd_get_32 (abfd, buf + 8) == MTCTR_11
2723 && bfd_get_32 (abfd, buf + 12) == BCTR);
2724 }
2725
2726 static bfd_boolean
2727 section_covers_vma (bfd *abfd ATTRIBUTE_UNUSED, asection *section, void *ptr)
2728 {
2729 bfd_vma vma = *(bfd_vma *) ptr;
2730 return ((section->flags & SEC_ALLOC) != 0
2731 && section->vma <= vma
2732 && vma < section->vma + section->size);
2733 }
2734
2735 static long
2736 ppc_elf_get_synthetic_symtab (bfd *abfd, long symcount, asymbol **syms,
2737 long dynsymcount, asymbol **dynsyms,
2738 asymbol **ret)
2739 {
2740 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
2741 asection *plt, *relplt, *dynamic, *glink;
2742 bfd_vma glink_vma = 0;
2743 bfd_vma resolv_vma = 0;
2744 bfd_vma stub_vma;
2745 asymbol *s;
2746 arelent *p;
2747 long count, i;
2748 size_t size;
2749 char *names;
2750 bfd_byte buf[4];
2751
2752 *ret = NULL;
2753
2754 if ((abfd->flags & (DYNAMIC | EXEC_P)) == 0)
2755 return 0;
2756
2757 if (dynsymcount <= 0)
2758 return 0;
2759
2760 relplt = bfd_get_section_by_name (abfd, ".rela.plt");
2761 if (relplt == NULL)
2762 return 0;
2763
2764 plt = bfd_get_section_by_name (abfd, ".plt");
2765 if (plt == NULL)
2766 return 0;
2767
2768 /* Call common code to handle old-style executable PLTs. */
2769 if (elf_section_flags (plt) & SHF_EXECINSTR)
2770 return _bfd_elf_get_synthetic_symtab (abfd, symcount, syms,
2771 dynsymcount, dynsyms, ret);
2772
2773 /* If this object was prelinked, the prelinker stored the address
2774 of .glink at got[1]. If it wasn't prelinked, got[1] will be zero. */
2775 dynamic = bfd_get_section_by_name (abfd, ".dynamic");
2776 if (dynamic != NULL)
2777 {
2778 bfd_byte *dynbuf, *extdyn, *extdynend;
2779 size_t extdynsize;
2780 void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *);
2781
2782 if (!bfd_malloc_and_get_section (abfd, dynamic, &dynbuf))
2783 return -1;
2784
2785 extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn;
2786 swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in;
2787
2788 extdyn = dynbuf;
2789 extdynend = extdyn + dynamic->size;
2790 for (; extdyn < extdynend; extdyn += extdynsize)
2791 {
2792 Elf_Internal_Dyn dyn;
2793 (*swap_dyn_in) (abfd, extdyn, &dyn);
2794
2795 if (dyn.d_tag == DT_NULL)
2796 break;
2797
2798 if (dyn.d_tag == DT_PPC_GOT)
2799 {
2800 unsigned int g_o_t = dyn.d_un.d_val;
2801 asection *got = bfd_get_section_by_name (abfd, ".got");
2802 if (got != NULL
2803 && bfd_get_section_contents (abfd, got, buf,
2804 g_o_t - got->vma + 4, 4))
2805 glink_vma = bfd_get_32 (abfd, buf);
2806 break;
2807 }
2808 }
2809 free (dynbuf);
2810 }
2811
2812 /* Otherwise we read the first plt entry. */
2813 if (glink_vma == 0)
2814 {
2815 if (bfd_get_section_contents (abfd, plt, buf, 0, 4))
2816 glink_vma = bfd_get_32 (abfd, buf);
2817 }
2818
2819 if (glink_vma == 0)
2820 return 0;
2821
2822 /* The .glink section usually does not survive the final
2823 link; search for the section (usually .text) where the
2824 glink stubs now reside. */
2825 glink = bfd_sections_find_if (abfd, section_covers_vma, &glink_vma);
2826 if (glink == NULL)
2827 return 0;
2828
2829 /* Determine glink PLT resolver by reading the relative branch
2830 from the first glink stub. */
2831 if (bfd_get_section_contents (abfd, glink, buf,
2832 glink_vma - glink->vma, 4))
2833 {
2834 unsigned int insn = bfd_get_32 (abfd, buf);
2835
2836 /* The first glink stub may either branch to the resolver ... */
2837 insn ^= B;
2838 if ((insn & ~0x3fffffc) == 0)
2839 resolv_vma = glink_vma + (insn ^ 0x2000000) - 0x2000000;
2840
2841 /* ... or fall through a bunch of NOPs. */
2842 else if ((insn ^ B ^ NOP) == 0)
2843 for (i = 4;
2844 bfd_get_section_contents (abfd, glink, buf,
2845 glink_vma - glink->vma + i, 4);
2846 i += 4)
2847 if (bfd_get_32 (abfd, buf) != NOP)
2848 {
2849 resolv_vma = glink_vma + i;
2850 break;
2851 }
2852 }
2853
2854 count = relplt->size / sizeof (Elf32_External_Rela);
2855 stub_vma = glink_vma - (bfd_vma) count * 16;
2856 /* If the stubs are those for -shared/-pie then we might have
2857 multiple stubs for each plt entry. If that is the case then
2858 there is no way to associate stubs with their plt entries short
2859 of figuring out the GOT pointer value used in the stub. */
2860 if (!is_nonpic_glink_stub (abfd, glink,
2861 glink_vma - GLINK_ENTRY_SIZE - glink->vma))
2862 return 0;
2863
2864 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
2865 if (! (*slurp_relocs) (abfd, relplt, dynsyms, TRUE))
2866 return -1;
2867
2868 size = count * sizeof (asymbol);
2869 p = relplt->relocation;
2870 for (i = 0; i < count; i++, p++)
2871 {
2872 size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt");
2873 if (p->addend != 0)
2874 size += sizeof ("+0x") - 1 + 8;
2875 }
2876
2877 size += sizeof (asymbol) + sizeof ("__glink");
2878
2879 if (resolv_vma)
2880 size += sizeof (asymbol) + sizeof ("__glink_PLTresolve");
2881
2882 s = *ret = bfd_malloc (size);
2883 if (s == NULL)
2884 return -1;
2885
2886 names = (char *) (s + count + 1 + (resolv_vma != 0));
2887 p = relplt->relocation;
2888 for (i = 0; i < count; i++, p++)
2889 {
2890 size_t len;
2891
2892 *s = **p->sym_ptr_ptr;
2893 /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since
2894 we are defining a symbol, ensure one of them is set. */
2895 if ((s->flags & BSF_LOCAL) == 0)
2896 s->flags |= BSF_GLOBAL;
2897 s->flags |= BSF_SYNTHETIC;
2898 s->section = glink;
2899 s->value = stub_vma - glink->vma;
2900 s->name = names;
2901 s->udata.p = NULL;
2902 len = strlen ((*p->sym_ptr_ptr)->name);
2903 memcpy (names, (*p->sym_ptr_ptr)->name, len);
2904 names += len;
2905 if (p->addend != 0)
2906 {
2907 memcpy (names, "+0x", sizeof ("+0x") - 1);
2908 names += sizeof ("+0x") - 1;
2909 bfd_sprintf_vma (abfd, names, p->addend);
2910 names += strlen (names);
2911 }
2912 memcpy (names, "@plt", sizeof ("@plt"));
2913 names += sizeof ("@plt");
2914 ++s;
2915 stub_vma += 16;
2916 }
2917
2918 /* Add a symbol at the start of the glink branch table. */
2919 memset (s, 0, sizeof *s);
2920 s->the_bfd = abfd;
2921 s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
2922 s->section = glink;
2923 s->value = glink_vma - glink->vma;
2924 s->name = names;
2925 memcpy (names, "__glink", sizeof ("__glink"));
2926 names += sizeof ("__glink");
2927 s++;
2928 count++;
2929
2930 if (resolv_vma)
2931 {
2932 /* Add a symbol for the glink PLT resolver. */
2933 memset (s, 0, sizeof *s);
2934 s->the_bfd = abfd;
2935 s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
2936 s->section = glink;
2937 s->value = resolv_vma - glink->vma;
2938 s->name = names;
2939 memcpy (names, "__glink_PLTresolve", sizeof ("__glink_PLTresolve"));
2940 names += sizeof ("__glink_PLTresolve");
2941 s++;
2942 count++;
2943 }
2944
2945 return count;
2946 }
2947 \f
2948 /* The following functions are specific to the ELF linker, while
2949 functions above are used generally. They appear in this file more
2950 or less in the order in which they are called. eg.
2951 ppc_elf_check_relocs is called early in the link process,
2952 ppc_elf_finish_dynamic_sections is one of the last functions
2953 called. */
2954
2955 /* Track PLT entries needed for a given symbol. We might need more
2956 than one glink entry per symbol when generating a pic binary. */
2957 struct plt_entry
2958 {
2959 struct plt_entry *next;
2960
2961 /* -fPIC uses multiple GOT sections, one per file, called ".got2".
2962 This field stores the offset into .got2 used to initialise the
2963 GOT pointer reg. It will always be at least 32768. (Current
2964 gcc always uses an offset of 32768, but ld -r will pack .got2
2965 sections together resulting in larger offsets). */
2966 bfd_vma addend;
2967
2968 /* The .got2 section. */
2969 asection *sec;
2970
2971 /* PLT refcount or offset. */
2972 union
2973 {
2974 bfd_signed_vma refcount;
2975 bfd_vma offset;
2976 } plt;
2977
2978 /* .glink stub offset. */
2979 bfd_vma glink_offset;
2980 };
2981
2982 /* Of those relocs that might be copied as dynamic relocs, this function
2983 selects those that must be copied when linking a shared library,
2984 even when the symbol is local. */
2985
2986 static int
2987 must_be_dyn_reloc (struct bfd_link_info *info,
2988 enum elf_ppc_reloc_type r_type)
2989 {
2990 switch (r_type)
2991 {
2992 default:
2993 return 1;
2994
2995 case R_PPC_REL24:
2996 case R_PPC_REL14:
2997 case R_PPC_REL14_BRTAKEN:
2998 case R_PPC_REL14_BRNTAKEN:
2999 case R_PPC_REL32:
3000 return 0;
3001
3002 case R_PPC_TPREL32:
3003 case R_PPC_TPREL16:
3004 case R_PPC_TPREL16_LO:
3005 case R_PPC_TPREL16_HI:
3006 case R_PPC_TPREL16_HA:
3007 return !info->executable;
3008 }
3009 }
3010
3011 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
3012 copying dynamic variables from a shared lib into an app's dynbss
3013 section, and instead use a dynamic relocation to point into the
3014 shared lib. */
3015 #define ELIMINATE_COPY_RELOCS 1
3016
3017 /* PPC ELF linker hash entry. */
3018
3019 struct ppc_elf_link_hash_entry
3020 {
3021 struct elf_link_hash_entry elf;
3022
3023 /* If this symbol is used in the linker created sections, the processor
3024 specific backend uses this field to map the field into the offset
3025 from the beginning of the section. */
3026 elf_linker_section_pointers_t *linker_section_pointer;
3027
3028 /* Track dynamic relocs copied for this symbol. */
3029 struct elf_dyn_relocs *dyn_relocs;
3030
3031 /* Contexts in which symbol is used in the GOT (or TOC).
3032 TLS_GD .. TLS_TLS bits are or'd into the mask as the
3033 corresponding relocs are encountered during check_relocs.
3034 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
3035 indicate the corresponding GOT entry type is not needed. */
3036 #define TLS_GD 1 /* GD reloc. */
3037 #define TLS_LD 2 /* LD reloc. */
3038 #define TLS_TPREL 4 /* TPREL reloc, => IE. */
3039 #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
3040 #define TLS_TLS 16 /* Any TLS reloc. */
3041 #define TLS_TPRELGD 32 /* TPREL reloc resulting from GD->IE. */
3042 #define PLT_IFUNC 64 /* STT_GNU_IFUNC. */
3043 char tls_mask;
3044
3045 /* Nonzero if we have seen a small data relocation referring to this
3046 symbol. */
3047 unsigned char has_sda_refs;
3048 };
3049
3050 #define ppc_elf_hash_entry(ent) ((struct ppc_elf_link_hash_entry *) (ent))
3051
3052 /* PPC ELF linker hash table. */
3053
3054 struct ppc_elf_link_hash_table
3055 {
3056 struct elf_link_hash_table elf;
3057
3058 /* Short-cuts to get to dynamic linker sections. */
3059 asection *got;
3060 asection *relgot;
3061 asection *glink;
3062 asection *plt;
3063 asection *relplt;
3064 asection *iplt;
3065 asection *reliplt;
3066 asection *dynbss;
3067 asection *relbss;
3068 asection *dynsbss;
3069 asection *relsbss;
3070 elf_linker_section_t sdata[2];
3071 asection *sbss;
3072 asection *glink_eh_frame;
3073
3074 /* The (unloaded but important) .rela.plt.unloaded on VxWorks. */
3075 asection *srelplt2;
3076
3077 /* The .got.plt section (VxWorks only)*/
3078 asection *sgotplt;
3079
3080 /* Shortcut to __tls_get_addr. */
3081 struct elf_link_hash_entry *tls_get_addr;
3082
3083 /* The bfd that forced an old-style PLT. */
3084 bfd *old_bfd;
3085
3086 /* TLS local dynamic got entry handling. */
3087 union {
3088 bfd_signed_vma refcount;
3089 bfd_vma offset;
3090 } tlsld_got;
3091
3092 /* Offset of branch table to PltResolve function in glink. */
3093 bfd_vma glink_pltresolve;
3094
3095 /* Size of reserved GOT entries. */
3096 unsigned int got_header_size;
3097 /* Non-zero if allocating the header left a gap. */
3098 unsigned int got_gap;
3099
3100 /* The type of PLT we have chosen to use. */
3101 enum ppc_elf_plt_type plt_type;
3102
3103 /* Set if we should emit symbols for stubs. */
3104 unsigned int emit_stub_syms:1;
3105
3106 /* Set if __tls_get_addr optimization should not be done. */
3107 unsigned int no_tls_get_addr_opt:1;
3108
3109 /* True if the target system is VxWorks. */
3110 unsigned int is_vxworks:1;
3111
3112 /* The size of PLT entries. */
3113 int plt_entry_size;
3114 /* The distance between adjacent PLT slots. */
3115 int plt_slot_size;
3116 /* The size of the first PLT entry. */
3117 int plt_initial_entry_size;
3118
3119 /* Small local sym cache. */
3120 struct sym_cache sym_cache;
3121 };
3122
3123 /* Get the PPC ELF linker hash table from a link_info structure. */
3124
3125 #define ppc_elf_hash_table(p) \
3126 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
3127 == PPC32_ELF_DATA ? ((struct ppc_elf_link_hash_table *) ((p)->hash)) : NULL)
3128
3129 /* Create an entry in a PPC ELF linker hash table. */
3130
3131 static struct bfd_hash_entry *
3132 ppc_elf_link_hash_newfunc (struct bfd_hash_entry *entry,
3133 struct bfd_hash_table *table,
3134 const char *string)
3135 {
3136 /* Allocate the structure if it has not already been allocated by a
3137 subclass. */
3138 if (entry == NULL)
3139 {
3140 entry = bfd_hash_allocate (table,
3141 sizeof (struct ppc_elf_link_hash_entry));
3142 if (entry == NULL)
3143 return entry;
3144 }
3145
3146 /* Call the allocation method of the superclass. */
3147 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
3148 if (entry != NULL)
3149 {
3150 ppc_elf_hash_entry (entry)->linker_section_pointer = NULL;
3151 ppc_elf_hash_entry (entry)->dyn_relocs = NULL;
3152 ppc_elf_hash_entry (entry)->tls_mask = 0;
3153 ppc_elf_hash_entry (entry)->has_sda_refs = 0;
3154 }
3155
3156 return entry;
3157 }
3158
3159 /* Create a PPC ELF linker hash table. */
3160
3161 static struct bfd_link_hash_table *
3162 ppc_elf_link_hash_table_create (bfd *abfd)
3163 {
3164 struct ppc_elf_link_hash_table *ret;
3165
3166 ret = bfd_zmalloc (sizeof (struct ppc_elf_link_hash_table));
3167 if (ret == NULL)
3168 return NULL;
3169
3170 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd,
3171 ppc_elf_link_hash_newfunc,
3172 sizeof (struct ppc_elf_link_hash_entry),
3173 PPC32_ELF_DATA))
3174 {
3175 free (ret);
3176 return NULL;
3177 }
3178
3179 ret->elf.init_plt_refcount.refcount = 0;
3180 ret->elf.init_plt_refcount.glist = NULL;
3181 ret->elf.init_plt_offset.offset = 0;
3182 ret->elf.init_plt_offset.glist = NULL;
3183
3184 ret->sdata[0].name = ".sdata";
3185 ret->sdata[0].sym_name = "_SDA_BASE_";
3186 ret->sdata[0].bss_name = ".sbss";
3187
3188 ret->sdata[1].name = ".sdata2";
3189 ret->sdata[1].sym_name = "_SDA2_BASE_";
3190 ret->sdata[1].bss_name = ".sbss2";
3191
3192 ret->plt_entry_size = 12;
3193 ret->plt_slot_size = 8;
3194 ret->plt_initial_entry_size = 72;
3195
3196 return &ret->elf.root;
3197 }
3198
3199 /* Create .got and the related sections. */
3200
3201 static bfd_boolean
3202 ppc_elf_create_got (bfd *abfd, struct bfd_link_info *info)
3203 {
3204 struct ppc_elf_link_hash_table *htab;
3205 asection *s;
3206 flagword flags;
3207
3208 if (!_bfd_elf_create_got_section (abfd, info))
3209 return FALSE;
3210
3211 htab = ppc_elf_hash_table (info);
3212 htab->got = s = bfd_get_section_by_name (abfd, ".got");
3213 if (s == NULL)
3214 abort ();
3215
3216 if (htab->is_vxworks)
3217 {
3218 htab->sgotplt = bfd_get_section_by_name (abfd, ".got.plt");
3219 if (!htab->sgotplt)
3220 abort ();
3221 }
3222 else
3223 {
3224 /* The powerpc .got has a blrl instruction in it. Mark it
3225 executable. */
3226 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS
3227 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3228 if (!bfd_set_section_flags (abfd, s, flags))
3229 return FALSE;
3230 }
3231
3232 htab->relgot = bfd_get_section_by_name (abfd, ".rela.got");
3233 if (!htab->relgot)
3234 abort ();
3235
3236 return TRUE;
3237 }
3238
3239 static bfd_boolean
3240 ppc_elf_create_glink (bfd *abfd, struct bfd_link_info *info)
3241 {
3242 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
3243 asection *s;
3244 flagword flags;
3245
3246 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY | SEC_HAS_CONTENTS
3247 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3248 s = bfd_make_section_anyway_with_flags (abfd, ".glink", flags);
3249 htab->glink = s;
3250 if (s == NULL
3251 || !bfd_set_section_alignment (abfd, s, 4))
3252 return FALSE;
3253
3254 if (!info->no_ld_generated_unwind_info)
3255 {
3256 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
3257 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3258 s = bfd_make_section_anyway_with_flags (abfd, ".eh_frame", flags);
3259 htab->glink_eh_frame = s;
3260 if (s == NULL
3261 || !bfd_set_section_alignment (abfd, s, 2))
3262 return FALSE;
3263 }
3264
3265 flags = SEC_ALLOC | SEC_LINKER_CREATED;
3266 s = bfd_make_section_anyway_with_flags (abfd, ".iplt", flags);
3267 htab->iplt = s;
3268 if (s == NULL
3269 || !bfd_set_section_alignment (abfd, s, 4))
3270 return FALSE;
3271
3272 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
3273 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3274 s = bfd_make_section_anyway_with_flags (abfd, ".rela.iplt", flags);
3275 htab->reliplt = s;
3276 if (s == NULL
3277 || ! bfd_set_section_alignment (abfd, s, 2))
3278 return FALSE;
3279 return TRUE;
3280 }
3281
3282 /* We have to create .dynsbss and .rela.sbss here so that they get mapped
3283 to output sections (just like _bfd_elf_create_dynamic_sections has
3284 to create .dynbss and .rela.bss). */
3285
3286 static bfd_boolean
3287 ppc_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
3288 {
3289 struct ppc_elf_link_hash_table *htab;
3290 asection *s;
3291 flagword flags;
3292
3293 htab = ppc_elf_hash_table (info);
3294
3295 if (htab->got == NULL
3296 && !ppc_elf_create_got (abfd, info))
3297 return FALSE;
3298
3299 if (!_bfd_elf_create_dynamic_sections (abfd, info))
3300 return FALSE;
3301
3302 if (htab->glink == NULL
3303 && !ppc_elf_create_glink (abfd, info))
3304 return FALSE;
3305
3306 htab->dynbss = bfd_get_section_by_name (abfd, ".dynbss");
3307 s = bfd_make_section_anyway_with_flags (abfd, ".dynsbss",
3308 SEC_ALLOC | SEC_LINKER_CREATED);
3309 htab->dynsbss = s;
3310 if (s == NULL)
3311 return FALSE;
3312
3313 if (! info->shared)
3314 {
3315 htab->relbss = bfd_get_section_by_name (abfd, ".rela.bss");
3316 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
3317 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3318 s = bfd_make_section_anyway_with_flags (abfd, ".rela.sbss", flags);
3319 htab->relsbss = s;
3320 if (s == NULL
3321 || ! bfd_set_section_alignment (abfd, s, 2))
3322 return FALSE;
3323 }
3324
3325 if (htab->is_vxworks
3326 && !elf_vxworks_create_dynamic_sections (abfd, info, &htab->srelplt2))
3327 return FALSE;
3328
3329 htab->relplt = bfd_get_section_by_name (abfd, ".rela.plt");
3330 htab->plt = s = bfd_get_section_by_name (abfd, ".plt");
3331 if (s == NULL)
3332 abort ();
3333
3334 flags = SEC_ALLOC | SEC_CODE | SEC_LINKER_CREATED;
3335 if (htab->plt_type == PLT_VXWORKS)
3336 /* The VxWorks PLT is a loaded section with contents. */
3337 flags |= SEC_HAS_CONTENTS | SEC_LOAD | SEC_READONLY;
3338 return bfd_set_section_flags (abfd, s, flags);
3339 }
3340
3341 /* Copy the extra info we tack onto an elf_link_hash_entry. */
3342
3343 static void
3344 ppc_elf_copy_indirect_symbol (struct bfd_link_info *info,
3345 struct elf_link_hash_entry *dir,
3346 struct elf_link_hash_entry *ind)
3347 {
3348 struct ppc_elf_link_hash_entry *edir, *eind;
3349
3350 edir = (struct ppc_elf_link_hash_entry *) dir;
3351 eind = (struct ppc_elf_link_hash_entry *) ind;
3352
3353 edir->tls_mask |= eind->tls_mask;
3354 edir->has_sda_refs |= eind->has_sda_refs;
3355
3356 /* If called to transfer flags for a weakdef during processing
3357 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
3358 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
3359 if (!(ELIMINATE_COPY_RELOCS
3360 && eind->elf.root.type != bfd_link_hash_indirect
3361 && edir->elf.dynamic_adjusted))
3362 edir->elf.non_got_ref |= eind->elf.non_got_ref;
3363
3364 edir->elf.ref_dynamic |= eind->elf.ref_dynamic;
3365 edir->elf.ref_regular |= eind->elf.ref_regular;
3366 edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak;
3367 edir->elf.needs_plt |= eind->elf.needs_plt;
3368 edir->elf.pointer_equality_needed |= eind->elf.pointer_equality_needed;
3369
3370 if (eind->dyn_relocs != NULL)
3371 {
3372 if (edir->dyn_relocs != NULL)
3373 {
3374 struct elf_dyn_relocs **pp;
3375 struct elf_dyn_relocs *p;
3376
3377 /* Add reloc counts against the indirect sym to the direct sym
3378 list. Merge any entries against the same section. */
3379 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
3380 {
3381 struct elf_dyn_relocs *q;
3382
3383 for (q = edir->dyn_relocs; q != NULL; q = q->next)
3384 if (q->sec == p->sec)
3385 {
3386 q->pc_count += p->pc_count;
3387 q->count += p->count;
3388 *pp = p->next;
3389 break;
3390 }
3391 if (q == NULL)
3392 pp = &p->next;
3393 }
3394 *pp = edir->dyn_relocs;
3395 }
3396
3397 edir->dyn_relocs = eind->dyn_relocs;
3398 eind->dyn_relocs = NULL;
3399 }
3400
3401 /* If we were called to copy over info for a weak sym, that's all.
3402 You might think dyn_relocs need not be copied over; After all,
3403 both syms will be dynamic or both non-dynamic so we're just
3404 moving reloc accounting around. However, ELIMINATE_COPY_RELOCS
3405 code in ppc_elf_adjust_dynamic_symbol needs to check for
3406 dyn_relocs in read-only sections, and it does so on what is the
3407 DIR sym here. */
3408 if (eind->elf.root.type != bfd_link_hash_indirect)
3409 return;
3410
3411 /* Copy over the GOT refcount entries that we may have already seen to
3412 the symbol which just became indirect. */
3413 edir->elf.got.refcount += eind->elf.got.refcount;
3414 eind->elf.got.refcount = 0;
3415
3416 /* And plt entries. */
3417 if (eind->elf.plt.plist != NULL)
3418 {
3419 if (edir->elf.plt.plist != NULL)
3420 {
3421 struct plt_entry **entp;
3422 struct plt_entry *ent;
3423
3424 for (entp = &eind->elf.plt.plist; (ent = *entp) != NULL; )
3425 {
3426 struct plt_entry *dent;
3427
3428 for (dent = edir->elf.plt.plist; dent != NULL; dent = dent->next)
3429 if (dent->sec == ent->sec && dent->addend == ent->addend)
3430 {
3431 dent->plt.refcount += ent->plt.refcount;
3432 *entp = ent->next;
3433 break;
3434 }
3435 if (dent == NULL)
3436 entp = &ent->next;
3437 }
3438 *entp = edir->elf.plt.plist;
3439 }
3440
3441 edir->elf.plt.plist = eind->elf.plt.plist;
3442 eind->elf.plt.plist = NULL;
3443 }
3444
3445 if (eind->elf.dynindx != -1)
3446 {
3447 if (edir->elf.dynindx != -1)
3448 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
3449 edir->elf.dynstr_index);
3450 edir->elf.dynindx = eind->elf.dynindx;
3451 edir->elf.dynstr_index = eind->elf.dynstr_index;
3452 eind->elf.dynindx = -1;
3453 eind->elf.dynstr_index = 0;
3454 }
3455 }
3456
3457 /* Hook called by the linker routine which adds symbols from an object
3458 file. We use it to put .comm items in .sbss, and not .bss. */
3459
3460 static bfd_boolean
3461 ppc_elf_add_symbol_hook (bfd *abfd,
3462 struct bfd_link_info *info,
3463 Elf_Internal_Sym *sym,
3464 const char **namep ATTRIBUTE_UNUSED,
3465 flagword *flagsp ATTRIBUTE_UNUSED,
3466 asection **secp,
3467 bfd_vma *valp)
3468 {
3469 if (sym->st_shndx == SHN_COMMON
3470 && !info->relocatable
3471 && is_ppc_elf (info->output_bfd)
3472 && sym->st_size <= elf_gp_size (abfd))
3473 {
3474 /* Common symbols less than or equal to -G nn bytes are automatically
3475 put into .sbss. */
3476 struct ppc_elf_link_hash_table *htab;
3477
3478 htab = ppc_elf_hash_table (info);
3479 if (htab->sbss == NULL)
3480 {
3481 flagword flags = SEC_IS_COMMON | SEC_LINKER_CREATED;
3482
3483 if (!htab->elf.dynobj)
3484 htab->elf.dynobj = abfd;
3485
3486 htab->sbss = bfd_make_section_anyway_with_flags (htab->elf.dynobj,
3487 ".sbss",
3488 flags);
3489 if (htab->sbss == NULL)
3490 return FALSE;
3491 }
3492
3493 *secp = htab->sbss;
3494 *valp = sym->st_size;
3495 }
3496
3497 if ((abfd->flags & DYNAMIC) == 0
3498 && (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC
3499 || ELF_ST_BIND (sym->st_info) == STB_GNU_UNIQUE))
3500 elf_tdata (info->output_bfd)->has_gnu_symbols = TRUE;
3501
3502 return TRUE;
3503 }
3504 \f
3505 static bfd_boolean
3506 create_sdata_sym (struct bfd_link_info *info, elf_linker_section_t *lsect)
3507 {
3508 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
3509
3510 lsect->sym = elf_link_hash_lookup (&htab->elf, lsect->sym_name,
3511 TRUE, FALSE, TRUE);
3512 if (lsect->sym == NULL)
3513 return FALSE;
3514 if (lsect->sym->root.type == bfd_link_hash_new)
3515 lsect->sym->non_elf = 0;
3516 lsect->sym->ref_regular = 1;
3517 _bfd_elf_link_hash_hide_symbol (info, lsect->sym, TRUE);
3518 return TRUE;
3519 }
3520
3521 /* Create a special linker section. */
3522
3523 static bfd_boolean
3524 ppc_elf_create_linker_section (bfd *abfd,
3525 struct bfd_link_info *info,
3526 flagword flags,
3527 elf_linker_section_t *lsect)
3528 {
3529 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
3530 asection *s;
3531
3532 flags |= (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
3533 | SEC_LINKER_CREATED);
3534
3535 /* Record the first bfd that needs the special sections. */
3536 if (!htab->elf.dynobj)
3537 htab->elf.dynobj = abfd;
3538
3539 s = bfd_make_section_anyway_with_flags (htab->elf.dynobj,
3540 lsect->name,
3541 flags);
3542 if (s == NULL
3543 || !bfd_set_section_alignment (htab->elf.dynobj, s, 2))
3544 return FALSE;
3545 lsect->section = s;
3546
3547 return create_sdata_sym (info, lsect);
3548 }
3549
3550 /* Find a linker generated pointer with a given addend and type. */
3551
3552 static elf_linker_section_pointers_t *
3553 elf_find_pointer_linker_section
3554 (elf_linker_section_pointers_t *linker_pointers,
3555 bfd_vma addend,
3556 elf_linker_section_t *lsect)
3557 {
3558 for ( ; linker_pointers != NULL; linker_pointers = linker_pointers->next)
3559 if (lsect == linker_pointers->lsect && addend == linker_pointers->addend)
3560 return linker_pointers;
3561
3562 return NULL;
3563 }
3564
3565 /* Allocate a pointer to live in a linker created section. */
3566
3567 static bfd_boolean
3568 elf_create_pointer_linker_section (bfd *abfd,
3569 elf_linker_section_t *lsect,
3570 struct elf_link_hash_entry *h,
3571 const Elf_Internal_Rela *rel)
3572 {
3573 elf_linker_section_pointers_t **ptr_linker_section_ptr = NULL;
3574 elf_linker_section_pointers_t *linker_section_ptr;
3575 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
3576 bfd_size_type amt;
3577
3578 BFD_ASSERT (lsect != NULL);
3579
3580 /* Is this a global symbol? */
3581 if (h != NULL)
3582 {
3583 struct ppc_elf_link_hash_entry *eh;
3584
3585 /* Has this symbol already been allocated? If so, our work is done. */
3586 eh = (struct ppc_elf_link_hash_entry *) h;
3587 if (elf_find_pointer_linker_section (eh->linker_section_pointer,
3588 rel->r_addend,
3589 lsect))
3590 return TRUE;
3591
3592 ptr_linker_section_ptr = &eh->linker_section_pointer;
3593 }
3594 else
3595 {
3596 BFD_ASSERT (is_ppc_elf (abfd));
3597
3598 /* Allocation of a pointer to a local symbol. */
3599 elf_linker_section_pointers_t **ptr = elf_local_ptr_offsets (abfd);
3600
3601 /* Allocate a table to hold the local symbols if first time. */
3602 if (!ptr)
3603 {
3604 unsigned int num_symbols = elf_symtab_hdr (abfd).sh_info;
3605
3606 amt = num_symbols;
3607 amt *= sizeof (elf_linker_section_pointers_t *);
3608 ptr = bfd_zalloc (abfd, amt);
3609
3610 if (!ptr)
3611 return FALSE;
3612
3613 elf_local_ptr_offsets (abfd) = ptr;
3614 }
3615
3616 /* Has this symbol already been allocated? If so, our work is done. */
3617 if (elf_find_pointer_linker_section (ptr[r_symndx],
3618 rel->r_addend,
3619 lsect))
3620 return TRUE;
3621
3622 ptr_linker_section_ptr = &ptr[r_symndx];
3623 }
3624
3625 /* Allocate space for a pointer in the linker section, and allocate
3626 a new pointer record from internal memory. */
3627 BFD_ASSERT (ptr_linker_section_ptr != NULL);
3628 amt = sizeof (elf_linker_section_pointers_t);
3629 linker_section_ptr = bfd_alloc (abfd, amt);
3630
3631 if (!linker_section_ptr)
3632 return FALSE;
3633
3634 linker_section_ptr->next = *ptr_linker_section_ptr;
3635 linker_section_ptr->addend = rel->r_addend;
3636 linker_section_ptr->lsect = lsect;
3637 *ptr_linker_section_ptr = linker_section_ptr;
3638
3639 linker_section_ptr->offset = lsect->section->size;
3640 lsect->section->size += 4;
3641
3642 #ifdef DEBUG
3643 fprintf (stderr,
3644 "Create pointer in linker section %s, offset = %ld, section size = %ld\n",
3645 lsect->name, (long) linker_section_ptr->offset,
3646 (long) lsect->section->size);
3647 #endif
3648
3649 return TRUE;
3650 }
3651
3652 static struct plt_entry **
3653 update_local_sym_info (bfd *abfd,
3654 Elf_Internal_Shdr *symtab_hdr,
3655 unsigned long r_symndx,
3656 int tls_type)
3657 {
3658 bfd_signed_vma *local_got_refcounts = elf_local_got_refcounts (abfd);
3659 struct plt_entry **local_plt;
3660 char *local_got_tls_masks;
3661
3662 if (local_got_refcounts == NULL)
3663 {
3664 bfd_size_type size = symtab_hdr->sh_info;
3665
3666 size *= (sizeof (*local_got_refcounts)
3667 + sizeof (*local_plt)
3668 + sizeof (*local_got_tls_masks));
3669 local_got_refcounts = bfd_zalloc (abfd, size);
3670 if (local_got_refcounts == NULL)
3671 return NULL;
3672 elf_local_got_refcounts (abfd) = local_got_refcounts;
3673 }
3674
3675 local_plt = (struct plt_entry **) (local_got_refcounts + symtab_hdr->sh_info);
3676 local_got_tls_masks = (char *) (local_plt + symtab_hdr->sh_info);
3677 local_got_tls_masks[r_symndx] |= tls_type;
3678 if (tls_type != PLT_IFUNC)
3679 local_got_refcounts[r_symndx] += 1;
3680 return local_plt + r_symndx;
3681 }
3682
3683 static bfd_boolean
3684 update_plt_info (bfd *abfd, struct plt_entry **plist,
3685 asection *sec, bfd_vma addend)
3686 {
3687 struct plt_entry *ent;
3688
3689 if (addend < 32768)
3690 sec = NULL;
3691 for (ent = *plist; ent != NULL; ent = ent->next)
3692 if (ent->sec == sec && ent->addend == addend)
3693 break;
3694 if (ent == NULL)
3695 {
3696 bfd_size_type amt = sizeof (*ent);
3697 ent = bfd_alloc (abfd, amt);
3698 if (ent == NULL)
3699 return FALSE;
3700 ent->next = *plist;
3701 ent->sec = sec;
3702 ent->addend = addend;
3703 ent->plt.refcount = 0;
3704 *plist = ent;
3705 }
3706 ent->plt.refcount += 1;
3707 return TRUE;
3708 }
3709
3710 static struct plt_entry *
3711 find_plt_ent (struct plt_entry **plist, asection *sec, bfd_vma addend)
3712 {
3713 struct plt_entry *ent;
3714
3715 if (addend < 32768)
3716 sec = NULL;
3717 for (ent = *plist; ent != NULL; ent = ent->next)
3718 if (ent->sec == sec && ent->addend == addend)
3719 break;
3720 return ent;
3721 }
3722
3723 static bfd_boolean
3724 is_branch_reloc (enum elf_ppc_reloc_type r_type)
3725 {
3726 return (r_type == R_PPC_PLTREL24
3727 || r_type == R_PPC_LOCAL24PC
3728 || r_type == R_PPC_REL24
3729 || r_type == R_PPC_REL14
3730 || r_type == R_PPC_REL14_BRTAKEN
3731 || r_type == R_PPC_REL14_BRNTAKEN
3732 || r_type == R_PPC_ADDR24
3733 || r_type == R_PPC_ADDR14
3734 || r_type == R_PPC_ADDR14_BRTAKEN
3735 || r_type == R_PPC_ADDR14_BRNTAKEN);
3736 }
3737
3738 static void
3739 bad_shared_reloc (bfd *abfd, enum elf_ppc_reloc_type r_type)
3740 {
3741 (*_bfd_error_handler)
3742 (_("%B: relocation %s cannot be used when making a shared object"),
3743 abfd,
3744 ppc_elf_howto_table[r_type]->name);
3745 bfd_set_error (bfd_error_bad_value);
3746 }
3747
3748 /* Look through the relocs for a section during the first phase, and
3749 allocate space in the global offset table or procedure linkage
3750 table. */
3751
3752 static bfd_boolean
3753 ppc_elf_check_relocs (bfd *abfd,
3754 struct bfd_link_info *info,
3755 asection *sec,
3756 const Elf_Internal_Rela *relocs)
3757 {
3758 struct ppc_elf_link_hash_table *htab;
3759 Elf_Internal_Shdr *symtab_hdr;
3760 struct elf_link_hash_entry **sym_hashes;
3761 const Elf_Internal_Rela *rel;
3762 const Elf_Internal_Rela *rel_end;
3763 asection *got2, *sreloc;
3764 struct elf_link_hash_entry *tga;
3765
3766 if (info->relocatable)
3767 return TRUE;
3768
3769 /* Don't do anything special with non-loaded, non-alloced sections.
3770 In particular, any relocs in such sections should not affect GOT
3771 and PLT reference counting (ie. we don't allow them to create GOT
3772 or PLT entries), there's no possibility or desire to optimize TLS
3773 relocs, and there's not much point in propagating relocs to shared
3774 libs that the dynamic linker won't relocate. */
3775 if ((sec->flags & SEC_ALLOC) == 0)
3776 return TRUE;
3777
3778 #ifdef DEBUG
3779 _bfd_error_handler ("ppc_elf_check_relocs called for section %A in %B",
3780 sec, abfd);
3781 #endif
3782
3783 BFD_ASSERT (is_ppc_elf (abfd));
3784
3785 /* Initialize howto table if not already done. */
3786 if (!ppc_elf_howto_table[R_PPC_ADDR32])
3787 ppc_elf_howto_init ();
3788
3789 htab = ppc_elf_hash_table (info);
3790 if (htab->glink == NULL)
3791 {
3792 if (htab->elf.dynobj == NULL)
3793 htab->elf.dynobj = abfd;
3794 if (!ppc_elf_create_glink (htab->elf.dynobj, info))
3795 return FALSE;
3796 }
3797 tga = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
3798 FALSE, FALSE, TRUE);
3799 symtab_hdr = &elf_symtab_hdr (abfd);
3800 sym_hashes = elf_sym_hashes (abfd);
3801 got2 = bfd_get_section_by_name (abfd, ".got2");
3802 sreloc = NULL;
3803
3804 rel_end = relocs + sec->reloc_count;
3805 for (rel = relocs; rel < rel_end; rel++)
3806 {
3807 unsigned long r_symndx;
3808 enum elf_ppc_reloc_type r_type;
3809 struct elf_link_hash_entry *h;
3810 int tls_type;
3811
3812 r_symndx = ELF32_R_SYM (rel->r_info);
3813 if (r_symndx < symtab_hdr->sh_info)
3814 h = NULL;
3815 else
3816 {
3817 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3818 while (h->root.type == bfd_link_hash_indirect
3819 || h->root.type == bfd_link_hash_warning)
3820 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3821 }
3822
3823 /* If a relocation refers to _GLOBAL_OFFSET_TABLE_, create the .got.
3824 This shows up in particular in an R_PPC_ADDR32 in the eabi
3825 startup code. */
3826 if (h != NULL
3827 && htab->got == NULL
3828 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
3829 {
3830 if (htab->elf.dynobj == NULL)
3831 htab->elf.dynobj = abfd;
3832 if (!ppc_elf_create_got (htab->elf.dynobj, info))
3833 return FALSE;
3834 BFD_ASSERT (h == htab->elf.hgot);
3835 }
3836
3837 tls_type = 0;
3838 r_type = ELF32_R_TYPE (rel->r_info);
3839 if (h == NULL && !htab->is_vxworks)
3840 {
3841 Elf_Internal_Sym *isym = bfd_sym_from_r_symndx (&htab->sym_cache,
3842 abfd, r_symndx);
3843 if (isym == NULL)
3844 return FALSE;
3845
3846 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC
3847 && (!info->shared
3848 || is_branch_reloc (r_type)))
3849 {
3850 struct plt_entry **ifunc;
3851 bfd_vma addend;
3852
3853 ifunc = update_local_sym_info (abfd, symtab_hdr, r_symndx,
3854 PLT_IFUNC);
3855 if (ifunc == NULL)
3856 return FALSE;
3857
3858 /* STT_GNU_IFUNC symbols must have a PLT entry;
3859 In a non-pie executable even when there are
3860 no plt calls. */
3861 addend = 0;
3862 if (r_type == R_PPC_PLTREL24)
3863 {
3864 ppc_elf_tdata (abfd)->makes_plt_call = 1;
3865 if (info->shared)
3866 addend = rel->r_addend;
3867 }
3868 if (!update_plt_info (abfd, ifunc, got2, addend))
3869 return FALSE;
3870 }
3871 }
3872
3873 if (!htab->is_vxworks
3874 && is_branch_reloc (r_type)
3875 && h != NULL
3876 && h == tga)
3877 {
3878 if (rel != relocs
3879 && (ELF32_R_TYPE (rel[-1].r_info) == R_PPC_TLSGD
3880 || ELF32_R_TYPE (rel[-1].r_info) == R_PPC_TLSLD))
3881 /* We have a new-style __tls_get_addr call with a marker
3882 reloc. */
3883 ;
3884 else
3885 /* Mark this section as having an old-style call. */
3886 sec->has_tls_get_addr_call = 1;
3887 }
3888
3889 switch (r_type)
3890 {
3891 case R_PPC_TLSGD:
3892 case R_PPC_TLSLD:
3893 /* These special tls relocs tie a call to __tls_get_addr with
3894 its parameter symbol. */
3895 break;
3896
3897 case R_PPC_GOT_TLSLD16:
3898 case R_PPC_GOT_TLSLD16_LO:
3899 case R_PPC_GOT_TLSLD16_HI:
3900 case R_PPC_GOT_TLSLD16_HA:
3901 tls_type = TLS_TLS | TLS_LD;
3902 goto dogottls;
3903
3904 case R_PPC_GOT_TLSGD16:
3905 case R_PPC_GOT_TLSGD16_LO:
3906 case R_PPC_GOT_TLSGD16_HI:
3907 case R_PPC_GOT_TLSGD16_HA:
3908 tls_type = TLS_TLS | TLS_GD;
3909 goto dogottls;
3910
3911 case R_PPC_GOT_TPREL16:
3912 case R_PPC_GOT_TPREL16_LO:
3913 case R_PPC_GOT_TPREL16_HI:
3914 case R_PPC_GOT_TPREL16_HA:
3915 if (!info->executable)
3916 info->flags |= DF_STATIC_TLS;
3917 tls_type = TLS_TLS | TLS_TPREL;
3918 goto dogottls;
3919
3920 case R_PPC_GOT_DTPREL16:
3921 case R_PPC_GOT_DTPREL16_LO:
3922 case R_PPC_GOT_DTPREL16_HI:
3923 case R_PPC_GOT_DTPREL16_HA:
3924 tls_type = TLS_TLS | TLS_DTPREL;
3925 dogottls:
3926 sec->has_tls_reloc = 1;
3927 /* Fall thru */
3928
3929 /* GOT16 relocations */
3930 case R_PPC_GOT16:
3931 case R_PPC_GOT16_LO:
3932 case R_PPC_GOT16_HI:
3933 case R_PPC_GOT16_HA:
3934 /* This symbol requires a global offset table entry. */
3935 if (htab->got == NULL)
3936 {
3937 if (htab->elf.dynobj == NULL)
3938 htab->elf.dynobj = abfd;
3939 if (!ppc_elf_create_got (htab->elf.dynobj, info))
3940 return FALSE;
3941 }
3942 if (h != NULL)
3943 {
3944 h->got.refcount += 1;
3945 ppc_elf_hash_entry (h)->tls_mask |= tls_type;
3946 }
3947 else
3948 /* This is a global offset table entry for a local symbol. */
3949 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, tls_type))
3950 return FALSE;
3951
3952 /* We may also need a plt entry if the symbol turns out to be
3953 an ifunc. */
3954 if (h != NULL && !info->shared)
3955 {
3956 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
3957 return FALSE;
3958 }
3959 break;
3960
3961 /* Indirect .sdata relocation. */
3962 case R_PPC_EMB_SDAI16:
3963 if (info->shared)
3964 {
3965 bad_shared_reloc (abfd, r_type);
3966 return FALSE;
3967 }
3968 if (htab->sdata[0].section == NULL
3969 && !ppc_elf_create_linker_section (abfd, info, 0,
3970 &htab->sdata[0]))
3971 return FALSE;
3972 if (!elf_create_pointer_linker_section (abfd, &htab->sdata[0],
3973 h, rel))
3974 return FALSE;
3975 if (h != NULL)
3976 {
3977 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3978 h->non_got_ref = TRUE;
3979 }
3980 break;
3981
3982 /* Indirect .sdata2 relocation. */
3983 case R_PPC_EMB_SDA2I16:
3984 if (info->shared)
3985 {
3986 bad_shared_reloc (abfd, r_type);
3987 return FALSE;
3988 }
3989 if (htab->sdata[1].section == NULL
3990 && !ppc_elf_create_linker_section (abfd, info, SEC_READONLY,
3991 &htab->sdata[1]))
3992 return FALSE;
3993 if (!elf_create_pointer_linker_section (abfd, &htab->sdata[1],
3994 h, rel))
3995 return FALSE;
3996 if (h != NULL)
3997 {
3998 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3999 h->non_got_ref = TRUE;
4000 }
4001 break;
4002
4003 case R_PPC_VLE_SDAREL_LO16A:
4004 case R_PPC_VLE_SDAREL_LO16D:
4005 case R_PPC_VLE_SDAREL_HI16A:
4006 case R_PPC_VLE_SDAREL_HI16D:
4007 case R_PPC_VLE_SDAREL_HA16A:
4008 case R_PPC_VLE_SDAREL_HA16D:
4009 case R_PPC_SDAREL16:
4010 if (htab->sdata[0].sym == NULL
4011 && !create_sdata_sym (info, &htab->sdata[0]))
4012 return FALSE;
4013
4014 if (htab->sdata[1].sym == NULL
4015 && !create_sdata_sym (info, &htab->sdata[1]))
4016 return FALSE;
4017
4018 if (h != NULL)
4019 {
4020 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4021 h->non_got_ref = TRUE;
4022 }
4023 break;
4024
4025 case R_PPC_VLE_REL8:
4026 case R_PPC_VLE_REL15:
4027 case R_PPC_VLE_REL24:
4028 case R_PPC_VLE_LO16A:
4029 case R_PPC_VLE_LO16D:
4030 case R_PPC_VLE_HI16A:
4031 case R_PPC_VLE_HI16D:
4032 case R_PPC_VLE_HA16A:
4033 case R_PPC_VLE_HA16D:
4034 break;
4035
4036 case R_PPC_EMB_SDA2REL:
4037 if (info->shared)
4038 {
4039 bad_shared_reloc (abfd, r_type);
4040 return FALSE;
4041 }
4042 if (htab->sdata[1].sym == NULL
4043 && !create_sdata_sym (info, &htab->sdata[1]))
4044 return FALSE;
4045 if (h != NULL)
4046 {
4047 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4048 h->non_got_ref = TRUE;
4049 }
4050 break;
4051
4052 case R_PPC_VLE_SDA21_LO:
4053 case R_PPC_VLE_SDA21:
4054 case R_PPC_EMB_SDA21:
4055 case R_PPC_EMB_RELSDA:
4056 if (info->shared)
4057 {
4058 bad_shared_reloc (abfd, r_type);
4059 return FALSE;
4060 }
4061 if (htab->sdata[0].sym == NULL
4062 && !create_sdata_sym (info, &htab->sdata[0]))
4063 return FALSE;
4064 if (htab->sdata[1].sym == NULL
4065 && !create_sdata_sym (info, &htab->sdata[1]))
4066 return FALSE;
4067 if (h != NULL)
4068 {
4069 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4070 h->non_got_ref = TRUE;
4071 }
4072 break;
4073
4074 case R_PPC_EMB_NADDR32:
4075 case R_PPC_EMB_NADDR16:
4076 case R_PPC_EMB_NADDR16_LO:
4077 case R_PPC_EMB_NADDR16_HI:
4078 case R_PPC_EMB_NADDR16_HA:
4079 if (info->shared)
4080 {
4081 bad_shared_reloc (abfd, r_type);
4082 return FALSE;
4083 }
4084 if (h != NULL)
4085 h->non_got_ref = TRUE;
4086 break;
4087
4088 case R_PPC_PLTREL24:
4089 if (h == NULL)
4090 break;
4091 /* Fall through */
4092 case R_PPC_PLT32:
4093 case R_PPC_PLTREL32:
4094 case R_PPC_PLT16_LO:
4095 case R_PPC_PLT16_HI:
4096 case R_PPC_PLT16_HA:
4097 #ifdef DEBUG
4098 fprintf (stderr, "Reloc requires a PLT entry\n");
4099 #endif
4100 /* This symbol requires a procedure linkage table entry. We
4101 actually build the entry in finish_dynamic_symbol,
4102 because this might be a case of linking PIC code without
4103 linking in any dynamic objects, in which case we don't
4104 need to generate a procedure linkage table after all. */
4105
4106 if (h == NULL)
4107 {
4108 /* It does not make sense to have a procedure linkage
4109 table entry for a local symbol. */
4110 info->callbacks->einfo (_("%P: %H: %s reloc against local symbol\n"),
4111 abfd, sec, rel->r_offset,
4112 ppc_elf_howto_table[r_type]->name);
4113 bfd_set_error (bfd_error_bad_value);
4114 return FALSE;
4115 }
4116 else
4117 {
4118 bfd_vma addend = 0;
4119
4120 if (r_type == R_PPC_PLTREL24)
4121 {
4122 ppc_elf_tdata (abfd)->makes_plt_call = 1;
4123 if (info->shared)
4124 addend = rel->r_addend;
4125 }
4126 h->needs_plt = 1;
4127 if (!update_plt_info (abfd, &h->plt.plist, got2, addend))
4128 return FALSE;
4129 }
4130 break;
4131
4132 /* The following relocations don't need to propagate the
4133 relocation if linking a shared object since they are
4134 section relative. */
4135 case R_PPC_SECTOFF:
4136 case R_PPC_SECTOFF_LO:
4137 case R_PPC_SECTOFF_HI:
4138 case R_PPC_SECTOFF_HA:
4139 case R_PPC_DTPREL16:
4140 case R_PPC_DTPREL16_LO:
4141 case R_PPC_DTPREL16_HI:
4142 case R_PPC_DTPREL16_HA:
4143 case R_PPC_TOC16:
4144 break;
4145
4146 case R_PPC_REL16:
4147 case R_PPC_REL16_LO:
4148 case R_PPC_REL16_HI:
4149 case R_PPC_REL16_HA:
4150 ppc_elf_tdata (abfd)->has_rel16 = 1;
4151 break;
4152
4153 /* These are just markers. */
4154 case R_PPC_TLS:
4155 case R_PPC_EMB_MRKREF:
4156 case R_PPC_NONE:
4157 case R_PPC_max:
4158 case R_PPC_RELAX:
4159 case R_PPC_RELAX_PLT:
4160 case R_PPC_RELAX_PLTREL24:
4161 break;
4162
4163 /* These should only appear in dynamic objects. */
4164 case R_PPC_COPY:
4165 case R_PPC_GLOB_DAT:
4166 case R_PPC_JMP_SLOT:
4167 case R_PPC_RELATIVE:
4168 case R_PPC_IRELATIVE:
4169 break;
4170
4171 /* These aren't handled yet. We'll report an error later. */
4172 case R_PPC_ADDR30:
4173 case R_PPC_EMB_RELSEC16:
4174 case R_PPC_EMB_RELST_LO:
4175 case R_PPC_EMB_RELST_HI:
4176 case R_PPC_EMB_RELST_HA:
4177 case R_PPC_EMB_BIT_FLD:
4178 break;
4179
4180 /* This refers only to functions defined in the shared library. */
4181 case R_PPC_LOCAL24PC:
4182 if (h != NULL && h == htab->elf.hgot && htab->plt_type == PLT_UNSET)
4183 {
4184 htab->plt_type = PLT_OLD;
4185 htab->old_bfd = abfd;
4186 }
4187 break;
4188
4189 /* This relocation describes the C++ object vtable hierarchy.
4190 Reconstruct it for later use during GC. */
4191 case R_PPC_GNU_VTINHERIT:
4192 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
4193 return FALSE;
4194 break;
4195
4196 /* This relocation describes which C++ vtable entries are actually
4197 used. Record for later use during GC. */
4198 case R_PPC_GNU_VTENTRY:
4199 BFD_ASSERT (h != NULL);
4200 if (h != NULL
4201 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
4202 return FALSE;
4203 break;
4204
4205 /* We shouldn't really be seeing these. */
4206 case R_PPC_TPREL32:
4207 case R_PPC_TPREL16:
4208 case R_PPC_TPREL16_LO:
4209 case R_PPC_TPREL16_HI:
4210 case R_PPC_TPREL16_HA:
4211 if (!info->executable)
4212 info->flags |= DF_STATIC_TLS;
4213 goto dodyn;
4214
4215 /* Nor these. */
4216 case R_PPC_DTPMOD32:
4217 case R_PPC_DTPREL32:
4218 goto dodyn;
4219
4220 case R_PPC_REL32:
4221 if (h == NULL
4222 && got2 != NULL
4223 && (sec->flags & SEC_CODE) != 0
4224 && info->shared
4225 && htab->plt_type == PLT_UNSET)
4226 {
4227 /* Old -fPIC gcc code has .long LCTOC1-LCFx just before
4228 the start of a function, which assembles to a REL32
4229 reference to .got2. If we detect one of these, then
4230 force the old PLT layout because the linker cannot
4231 reliably deduce the GOT pointer value needed for
4232 PLT call stubs. */
4233 asection *s;
4234 Elf_Internal_Sym *isym;
4235
4236 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
4237 abfd, r_symndx);
4238 if (isym == NULL)
4239 return FALSE;
4240
4241 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
4242 if (s == got2)
4243 {
4244 htab->plt_type = PLT_OLD;
4245 htab->old_bfd = abfd;
4246 }
4247 }
4248 if (h == NULL || h == htab->elf.hgot)
4249 break;
4250 /* fall through */
4251
4252 case R_PPC_ADDR32:
4253 case R_PPC_ADDR16:
4254 case R_PPC_ADDR16_LO:
4255 case R_PPC_ADDR16_HI:
4256 case R_PPC_ADDR16_HA:
4257 case R_PPC_UADDR32:
4258 case R_PPC_UADDR16:
4259 if (h != NULL && !info->shared)
4260 {
4261 /* We may need a plt entry if the symbol turns out to be
4262 a function defined in a dynamic object. */
4263 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
4264 return FALSE;
4265
4266 /* We may need a copy reloc too. */
4267 h->non_got_ref = 1;
4268 h->pointer_equality_needed = 1;
4269 }
4270 goto dodyn;
4271
4272 case R_PPC_REL24:
4273 case R_PPC_REL14:
4274 case R_PPC_REL14_BRTAKEN:
4275 case R_PPC_REL14_BRNTAKEN:
4276 if (h == NULL)
4277 break;
4278 if (h == htab->elf.hgot)
4279 {
4280 if (htab->plt_type == PLT_UNSET)
4281 {
4282 htab->plt_type = PLT_OLD;
4283 htab->old_bfd = abfd;
4284 }
4285 break;
4286 }
4287 /* fall through */
4288
4289 case R_PPC_ADDR24:
4290 case R_PPC_ADDR14:
4291 case R_PPC_ADDR14_BRTAKEN:
4292 case R_PPC_ADDR14_BRNTAKEN:
4293 if (h != NULL && !info->shared)
4294 {
4295 /* We may need a plt entry if the symbol turns out to be
4296 a function defined in a dynamic object. */
4297 h->needs_plt = 1;
4298 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
4299 return FALSE;
4300 break;
4301 }
4302
4303 dodyn:
4304 /* If we are creating a shared library, and this is a reloc
4305 against a global symbol, or a non PC relative reloc
4306 against a local symbol, then we need to copy the reloc
4307 into the shared library. However, if we are linking with
4308 -Bsymbolic, we do not need to copy a reloc against a
4309 global symbol which is defined in an object we are
4310 including in the link (i.e., DEF_REGULAR is set). At
4311 this point we have not seen all the input files, so it is
4312 possible that DEF_REGULAR is not set now but will be set
4313 later (it is never cleared). In case of a weak definition,
4314 DEF_REGULAR may be cleared later by a strong definition in
4315 a shared library. We account for that possibility below by
4316 storing information in the dyn_relocs field of the hash
4317 table entry. A similar situation occurs when creating
4318 shared libraries and symbol visibility changes render the
4319 symbol local.
4320
4321 If on the other hand, we are creating an executable, we
4322 may need to keep relocations for symbols satisfied by a
4323 dynamic library if we manage to avoid copy relocs for the
4324 symbol. */
4325 if ((info->shared
4326 && (must_be_dyn_reloc (info, r_type)
4327 || (h != NULL
4328 && (! info->symbolic
4329 || h->root.type == bfd_link_hash_defweak
4330 || !h->def_regular))))
4331 || (ELIMINATE_COPY_RELOCS
4332 && !info->shared
4333 && h != NULL
4334 && (h->root.type == bfd_link_hash_defweak
4335 || !h->def_regular)))
4336 {
4337 struct elf_dyn_relocs *p;
4338 struct elf_dyn_relocs **rel_head;
4339
4340 #ifdef DEBUG
4341 fprintf (stderr,
4342 "ppc_elf_check_relocs needs to "
4343 "create relocation for %s\n",
4344 (h && h->root.root.string
4345 ? h->root.root.string : "<unknown>"));
4346 #endif
4347 if (sreloc == NULL)
4348 {
4349 if (htab->elf.dynobj == NULL)
4350 htab->elf.dynobj = abfd;
4351
4352 sreloc = _bfd_elf_make_dynamic_reloc_section
4353 (sec, htab->elf.dynobj, 2, abfd, /*rela?*/ TRUE);
4354
4355 if (sreloc == NULL)
4356 return FALSE;
4357 }
4358
4359 /* If this is a global symbol, we count the number of
4360 relocations we need for this symbol. */
4361 if (h != NULL)
4362 {
4363 rel_head = &ppc_elf_hash_entry (h)->dyn_relocs;
4364 }
4365 else
4366 {
4367 /* Track dynamic relocs needed for local syms too.
4368 We really need local syms available to do this
4369 easily. Oh well. */
4370 asection *s;
4371 void *vpp;
4372 Elf_Internal_Sym *isym;
4373
4374 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
4375 abfd, r_symndx);
4376 if (isym == NULL)
4377 return FALSE;
4378
4379 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
4380 if (s == NULL)
4381 s = sec;
4382
4383 vpp = &elf_section_data (s)->local_dynrel;
4384 rel_head = (struct elf_dyn_relocs **) vpp;
4385 }
4386
4387 p = *rel_head;
4388 if (p == NULL || p->sec != sec)
4389 {
4390 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
4391 if (p == NULL)
4392 return FALSE;
4393 p->next = *rel_head;
4394 *rel_head = p;
4395 p->sec = sec;
4396 p->count = 0;
4397 p->pc_count = 0;
4398 }
4399
4400 p->count += 1;
4401 if (!must_be_dyn_reloc (info, r_type))
4402 p->pc_count += 1;
4403 }
4404
4405 break;
4406 }
4407 }
4408
4409 return TRUE;
4410 }
4411 \f
4412
4413 /* Merge object attributes from IBFD into OBFD. Raise an error if
4414 there are conflicting attributes. */
4415 static bfd_boolean
4416 ppc_elf_merge_obj_attributes (bfd *ibfd, bfd *obfd)
4417 {
4418 obj_attribute *in_attr, *in_attrs;
4419 obj_attribute *out_attr, *out_attrs;
4420
4421 if (!elf_known_obj_attributes_proc (obfd)[0].i)
4422 {
4423 /* This is the first object. Copy the attributes. */
4424 _bfd_elf_copy_obj_attributes (ibfd, obfd);
4425
4426 /* Use the Tag_null value to indicate the attributes have been
4427 initialized. */
4428 elf_known_obj_attributes_proc (obfd)[0].i = 1;
4429
4430 return TRUE;
4431 }
4432
4433 in_attrs = elf_known_obj_attributes (ibfd)[OBJ_ATTR_GNU];
4434 out_attrs = elf_known_obj_attributes (obfd)[OBJ_ATTR_GNU];
4435
4436 /* Check for conflicting Tag_GNU_Power_ABI_FP attributes and merge
4437 non-conflicting ones. */
4438 in_attr = &in_attrs[Tag_GNU_Power_ABI_FP];
4439 out_attr = &out_attrs[Tag_GNU_Power_ABI_FP];
4440 if (in_attr->i != out_attr->i)
4441 {
4442 out_attr->type = 1;
4443 if (out_attr->i == 0)
4444 out_attr->i = in_attr->i;
4445 else if (in_attr->i == 0)
4446 ;
4447 else if (out_attr->i == 1 && in_attr->i == 2)
4448 _bfd_error_handler
4449 (_("Warning: %B uses hard float, %B uses soft float"), obfd, ibfd);
4450 else if (out_attr->i == 1 && in_attr->i == 3)
4451 _bfd_error_handler
4452 (_("Warning: %B uses double-precision hard float, %B uses single-precision hard float"),
4453 obfd, ibfd);
4454 else if (out_attr->i == 3 && in_attr->i == 1)
4455 _bfd_error_handler
4456 (_("Warning: %B uses double-precision hard float, %B uses single-precision hard float"),
4457 ibfd, obfd);
4458 else if (out_attr->i == 3 && in_attr->i == 2)
4459 _bfd_error_handler
4460 (_("Warning: %B uses soft float, %B uses single-precision hard float"),
4461 ibfd, obfd);
4462 else if (out_attr->i == 2 && (in_attr->i == 1 || in_attr->i == 3))
4463 _bfd_error_handler
4464 (_("Warning: %B uses hard float, %B uses soft float"), ibfd, obfd);
4465 else if (in_attr->i > 3)
4466 _bfd_error_handler
4467 (_("Warning: %B uses unknown floating point ABI %d"), ibfd,
4468 in_attr->i);
4469 else
4470 _bfd_error_handler
4471 (_("Warning: %B uses unknown floating point ABI %d"), obfd,
4472 out_attr->i);
4473 }
4474
4475 /* Check for conflicting Tag_GNU_Power_ABI_Vector attributes and
4476 merge non-conflicting ones. */
4477 in_attr = &in_attrs[Tag_GNU_Power_ABI_Vector];
4478 out_attr = &out_attrs[Tag_GNU_Power_ABI_Vector];
4479 if (in_attr->i != out_attr->i)
4480 {
4481 const char *in_abi = NULL, *out_abi = NULL;
4482
4483 switch (in_attr->i)
4484 {
4485 case 1: in_abi = "generic"; break;
4486 case 2: in_abi = "AltiVec"; break;
4487 case 3: in_abi = "SPE"; break;
4488 }
4489
4490 switch (out_attr->i)
4491 {
4492 case 1: out_abi = "generic"; break;
4493 case 2: out_abi = "AltiVec"; break;
4494 case 3: out_abi = "SPE"; break;
4495 }
4496
4497 out_attr->type = 1;
4498 if (out_attr->i == 0)
4499 out_attr->i = in_attr->i;
4500 else if (in_attr->i == 0)
4501 ;
4502 /* For now, allow generic to transition to AltiVec or SPE
4503 without a warning. If GCC marked files with their stack
4504 alignment and used don't-care markings for files which are
4505 not affected by the vector ABI, we could warn about this
4506 case too. */
4507 else if (out_attr->i == 1)
4508 out_attr->i = in_attr->i;
4509 else if (in_attr->i == 1)
4510 ;
4511 else if (in_abi == NULL)
4512 _bfd_error_handler
4513 (_("Warning: %B uses unknown vector ABI %d"), ibfd,
4514 in_attr->i);
4515 else if (out_abi == NULL)
4516 _bfd_error_handler
4517 (_("Warning: %B uses unknown vector ABI %d"), obfd,
4518 in_attr->i);
4519 else
4520 _bfd_error_handler
4521 (_("Warning: %B uses vector ABI \"%s\", %B uses \"%s\""),
4522 ibfd, obfd, in_abi, out_abi);
4523 }
4524
4525 /* Check for conflicting Tag_GNU_Power_ABI_Struct_Return attributes
4526 and merge non-conflicting ones. */
4527 in_attr = &in_attrs[Tag_GNU_Power_ABI_Struct_Return];
4528 out_attr = &out_attrs[Tag_GNU_Power_ABI_Struct_Return];
4529 if (in_attr->i != out_attr->i)
4530 {
4531 out_attr->type = 1;
4532 if (out_attr->i == 0)
4533 out_attr->i = in_attr->i;
4534 else if (in_attr->i == 0)
4535 ;
4536 else if (out_attr->i == 1 && in_attr->i == 2)
4537 _bfd_error_handler
4538 (_("Warning: %B uses r3/r4 for small structure returns, %B uses memory"), obfd, ibfd);
4539 else if (out_attr->i == 2 && in_attr->i == 1)
4540 _bfd_error_handler
4541 (_("Warning: %B uses r3/r4 for small structure returns, %B uses memory"), ibfd, obfd);
4542 else if (in_attr->i > 2)
4543 _bfd_error_handler
4544 (_("Warning: %B uses unknown small structure return convention %d"), ibfd,
4545 in_attr->i);
4546 else
4547 _bfd_error_handler
4548 (_("Warning: %B uses unknown small structure return convention %d"), obfd,
4549 out_attr->i);
4550 }
4551
4552 /* Merge Tag_compatibility attributes and any common GNU ones. */
4553 _bfd_elf_merge_object_attributes (ibfd, obfd);
4554
4555 return TRUE;
4556 }
4557
4558 /* Merge backend specific data from an object file to the output
4559 object file when linking. */
4560
4561 static bfd_boolean
4562 ppc_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
4563 {
4564 flagword old_flags;
4565 flagword new_flags;
4566 bfd_boolean error;
4567
4568 if (!is_ppc_elf (ibfd) || !is_ppc_elf (obfd))
4569 return TRUE;
4570
4571 /* Check if we have the same endianness. */
4572 if (! _bfd_generic_verify_endian_match (ibfd, obfd))
4573 return FALSE;
4574
4575 if (!ppc_elf_merge_obj_attributes (ibfd, obfd))
4576 return FALSE;
4577
4578 new_flags = elf_elfheader (ibfd)->e_flags;
4579 old_flags = elf_elfheader (obfd)->e_flags;
4580 if (!elf_flags_init (obfd))
4581 {
4582 /* First call, no flags set. */
4583 elf_flags_init (obfd) = TRUE;
4584 elf_elfheader (obfd)->e_flags = new_flags;
4585 }
4586
4587 /* Compatible flags are ok. */
4588 else if (new_flags == old_flags)
4589 ;
4590
4591 /* Incompatible flags. */
4592 else
4593 {
4594 /* Warn about -mrelocatable mismatch. Allow -mrelocatable-lib
4595 to be linked with either. */
4596 error = FALSE;
4597 if ((new_flags & EF_PPC_RELOCATABLE) != 0
4598 && (old_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0)
4599 {
4600 error = TRUE;
4601 (*_bfd_error_handler)
4602 (_("%B: compiled with -mrelocatable and linked with "
4603 "modules compiled normally"), ibfd);
4604 }
4605 else if ((new_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0
4606 && (old_flags & EF_PPC_RELOCATABLE) != 0)
4607 {
4608 error = TRUE;
4609 (*_bfd_error_handler)
4610 (_("%B: compiled normally and linked with "
4611 "modules compiled with -mrelocatable"), ibfd);
4612 }
4613
4614 /* The output is -mrelocatable-lib iff both the input files are. */
4615 if (! (new_flags & EF_PPC_RELOCATABLE_LIB))
4616 elf_elfheader (obfd)->e_flags &= ~EF_PPC_RELOCATABLE_LIB;
4617
4618 /* The output is -mrelocatable iff it can't be -mrelocatable-lib,
4619 but each input file is either -mrelocatable or -mrelocatable-lib. */
4620 if (! (elf_elfheader (obfd)->e_flags & EF_PPC_RELOCATABLE_LIB)
4621 && (new_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE))
4622 && (old_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE)))
4623 elf_elfheader (obfd)->e_flags |= EF_PPC_RELOCATABLE;
4624
4625 /* Do not warn about eabi vs. V.4 mismatch, just or in the bit if
4626 any module uses it. */
4627 elf_elfheader (obfd)->e_flags |= (new_flags & EF_PPC_EMB);
4628
4629 new_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
4630 old_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
4631
4632 /* Warn about any other mismatches. */
4633 if (new_flags != old_flags)
4634 {
4635 error = TRUE;
4636 (*_bfd_error_handler)
4637 (_("%B: uses different e_flags (0x%lx) fields "
4638 "than previous modules (0x%lx)"),
4639 ibfd, (long) new_flags, (long) old_flags);
4640 }
4641
4642 if (error)
4643 {
4644 bfd_set_error (bfd_error_bad_value);
4645 return FALSE;
4646 }
4647 }
4648
4649 return TRUE;
4650 }
4651
4652 static void
4653 ppc_elf_vle_split16 (bfd *output_bfd, bfd_byte *contents,
4654 bfd_vma offset, bfd_vma relocation,
4655 split16_format_type split16_format)
4656
4657 {
4658 bfd_vma insn, top5, bottom11;
4659
4660 insn = bfd_get_32 (output_bfd, contents + offset);
4661 top5 = relocation >> 11;
4662 top5 = top5 << (split16_format == split16a_type ? 20 : 16);
4663 bottom11 = relocation & 0x7ff;
4664 insn |= top5;
4665 insn |= bottom11;
4666 bfd_put_32 (output_bfd, insn, contents + offset);
4667 }
4668
4669 \f
4670 /* Choose which PLT scheme to use, and set .plt flags appropriately.
4671 Returns -1 on error, 0 for old PLT, 1 for new PLT. */
4672 int
4673 ppc_elf_select_plt_layout (bfd *output_bfd ATTRIBUTE_UNUSED,
4674 struct bfd_link_info *info,
4675 enum ppc_elf_plt_type plt_style,
4676 int emit_stub_syms)
4677 {
4678 struct ppc_elf_link_hash_table *htab;
4679 flagword flags;
4680
4681 htab = ppc_elf_hash_table (info);
4682
4683 htab->emit_stub_syms = emit_stub_syms;
4684
4685 if (htab->plt_type == PLT_UNSET)
4686 {
4687 struct elf_link_hash_entry *h;
4688
4689 if (plt_style == PLT_OLD)
4690 htab->plt_type = PLT_OLD;
4691 else if (info->shared
4692 && htab->elf.dynamic_sections_created
4693 && (h = elf_link_hash_lookup (&htab->elf, "_mcount",
4694 FALSE, FALSE, TRUE)) != NULL
4695 && (h->type == STT_FUNC
4696 || h->needs_plt)
4697 && h->ref_regular
4698 && !(SYMBOL_CALLS_LOCAL (info, h)
4699 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
4700 && h->root.type == bfd_link_hash_undefweak)))
4701 {
4702 /* Profiling of shared libs (and pies) is not supported with
4703 secure plt, because ppc32 does profiling before a
4704 function prologue and a secure plt pic call stubs needs
4705 r30 to be set up. */
4706 htab->plt_type = PLT_OLD;
4707 }
4708 else
4709 {
4710 bfd *ibfd;
4711 enum ppc_elf_plt_type plt_type = plt_style;
4712
4713 /* Look through the reloc flags left by ppc_elf_check_relocs.
4714 Use the old style bss plt if a file makes plt calls
4715 without using the new relocs, and if ld isn't given
4716 --secure-plt and we never see REL16 relocs. */
4717 if (plt_type == PLT_UNSET)
4718 plt_type = PLT_OLD;
4719 for (ibfd = info->input_bfds; ibfd; ibfd = ibfd->link_next)
4720 if (is_ppc_elf (ibfd))
4721 {
4722 if (ppc_elf_tdata (ibfd)->has_rel16)
4723 plt_type = PLT_NEW;
4724 else if (ppc_elf_tdata (ibfd)->makes_plt_call)
4725 {
4726 plt_type = PLT_OLD;
4727 htab->old_bfd = ibfd;
4728 break;
4729 }
4730 }
4731 htab->plt_type = plt_type;
4732 }
4733 }
4734 if (htab->plt_type == PLT_OLD && plt_style == PLT_NEW)
4735 {
4736 if (htab->old_bfd != NULL)
4737 info->callbacks->einfo (_("%P: bss-plt forced due to %B\n"),
4738 htab->old_bfd);
4739 else
4740 info->callbacks->einfo (_("%P: bss-plt forced by profiling\n"));
4741 }
4742
4743 BFD_ASSERT (htab->plt_type != PLT_VXWORKS);
4744
4745 if (htab->plt_type == PLT_NEW)
4746 {
4747 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
4748 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4749
4750 /* The new PLT is a loaded section. */
4751 if (htab->plt != NULL
4752 && !bfd_set_section_flags (htab->elf.dynobj, htab->plt, flags))
4753 return -1;
4754
4755 /* The new GOT is not executable. */
4756 if (htab->got != NULL
4757 && !bfd_set_section_flags (htab->elf.dynobj, htab->got, flags))
4758 return -1;
4759 }
4760 else
4761 {
4762 /* Stop an unused .glink section from affecting .text alignment. */
4763 if (htab->glink != NULL
4764 && !bfd_set_section_alignment (htab->elf.dynobj, htab->glink, 0))
4765 return -1;
4766 }
4767 return htab->plt_type == PLT_NEW;
4768 }
4769 \f
4770 /* Return the section that should be marked against GC for a given
4771 relocation. */
4772
4773 static asection *
4774 ppc_elf_gc_mark_hook (asection *sec,
4775 struct bfd_link_info *info,
4776 Elf_Internal_Rela *rel,
4777 struct elf_link_hash_entry *h,
4778 Elf_Internal_Sym *sym)
4779 {
4780 if (h != NULL)
4781 switch (ELF32_R_TYPE (rel->r_info))
4782 {
4783 case R_PPC_GNU_VTINHERIT:
4784 case R_PPC_GNU_VTENTRY:
4785 return NULL;
4786 }
4787
4788 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
4789 }
4790
4791 /* Update the got, plt and dynamic reloc reference counts for the
4792 section being removed. */
4793
4794 static bfd_boolean
4795 ppc_elf_gc_sweep_hook (bfd *abfd,
4796 struct bfd_link_info *info,
4797 asection *sec,
4798 const Elf_Internal_Rela *relocs)
4799 {
4800 struct ppc_elf_link_hash_table *htab;
4801 Elf_Internal_Shdr *symtab_hdr;
4802 struct elf_link_hash_entry **sym_hashes;
4803 bfd_signed_vma *local_got_refcounts;
4804 const Elf_Internal_Rela *rel, *relend;
4805 asection *got2;
4806
4807 if (info->relocatable)
4808 return TRUE;
4809
4810 if ((sec->flags & SEC_ALLOC) == 0)
4811 return TRUE;
4812
4813 elf_section_data (sec)->local_dynrel = NULL;
4814
4815 htab = ppc_elf_hash_table (info);
4816 symtab_hdr = &elf_symtab_hdr (abfd);
4817 sym_hashes = elf_sym_hashes (abfd);
4818 local_got_refcounts = elf_local_got_refcounts (abfd);
4819 got2 = bfd_get_section_by_name (abfd, ".got2");
4820
4821 relend = relocs + sec->reloc_count;
4822 for (rel = relocs; rel < relend; rel++)
4823 {
4824 unsigned long r_symndx;
4825 enum elf_ppc_reloc_type r_type;
4826 struct elf_link_hash_entry *h = NULL;
4827
4828 r_symndx = ELF32_R_SYM (rel->r_info);
4829 if (r_symndx >= symtab_hdr->sh_info)
4830 {
4831 struct elf_dyn_relocs **pp, *p;
4832 struct ppc_elf_link_hash_entry *eh;
4833
4834 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4835 while (h->root.type == bfd_link_hash_indirect
4836 || h->root.type == bfd_link_hash_warning)
4837 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4838 eh = (struct ppc_elf_link_hash_entry *) h;
4839
4840 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
4841 if (p->sec == sec)
4842 {
4843 /* Everything must go for SEC. */
4844 *pp = p->next;
4845 break;
4846 }
4847 }
4848
4849 r_type = ELF32_R_TYPE (rel->r_info);
4850 if (!htab->is_vxworks
4851 && h == NULL
4852 && local_got_refcounts != NULL
4853 && (!info->shared
4854 || is_branch_reloc (r_type)))
4855 {
4856 struct plt_entry **local_plt = (struct plt_entry **)
4857 (local_got_refcounts + symtab_hdr->sh_info);
4858 char *local_got_tls_masks = (char *)
4859 (local_plt + symtab_hdr->sh_info);
4860 if ((local_got_tls_masks[r_symndx] & PLT_IFUNC) != 0)
4861 {
4862 struct plt_entry **ifunc = local_plt + r_symndx;
4863 bfd_vma addend = 0;
4864 struct plt_entry *ent;
4865
4866 if (r_type == R_PPC_PLTREL24 && info->shared)
4867 addend = rel->r_addend;
4868 ent = find_plt_ent (ifunc, got2, addend);
4869 if (ent->plt.refcount > 0)
4870 ent->plt.refcount -= 1;
4871 continue;
4872 }
4873 }
4874
4875 switch (r_type)
4876 {
4877 case R_PPC_GOT_TLSLD16:
4878 case R_PPC_GOT_TLSLD16_LO:
4879 case R_PPC_GOT_TLSLD16_HI:
4880 case R_PPC_GOT_TLSLD16_HA:
4881 case R_PPC_GOT_TLSGD16:
4882 case R_PPC_GOT_TLSGD16_LO:
4883 case R_PPC_GOT_TLSGD16_HI:
4884 case R_PPC_GOT_TLSGD16_HA:
4885 case R_PPC_GOT_TPREL16:
4886 case R_PPC_GOT_TPREL16_LO:
4887 case R_PPC_GOT_TPREL16_HI:
4888 case R_PPC_GOT_TPREL16_HA:
4889 case R_PPC_GOT_DTPREL16:
4890 case R_PPC_GOT_DTPREL16_LO:
4891 case R_PPC_GOT_DTPREL16_HI:
4892 case R_PPC_GOT_DTPREL16_HA:
4893 case R_PPC_GOT16:
4894 case R_PPC_GOT16_LO:
4895 case R_PPC_GOT16_HI:
4896 case R_PPC_GOT16_HA:
4897 if (h != NULL)
4898 {
4899 if (h->got.refcount > 0)
4900 h->got.refcount--;
4901 if (!info->shared)
4902 {
4903 struct plt_entry *ent;
4904
4905 ent = find_plt_ent (&h->plt.plist, NULL, 0);
4906 if (ent != NULL && ent->plt.refcount > 0)
4907 ent->plt.refcount -= 1;
4908 }
4909 }
4910 else if (local_got_refcounts != NULL)
4911 {
4912 if (local_got_refcounts[r_symndx] > 0)
4913 local_got_refcounts[r_symndx]--;
4914 }
4915 break;
4916
4917 case R_PPC_REL24:
4918 case R_PPC_REL14:
4919 case R_PPC_REL14_BRTAKEN:
4920 case R_PPC_REL14_BRNTAKEN:
4921 case R_PPC_REL32:
4922 if (h == NULL || h == htab->elf.hgot)
4923 break;
4924 /* Fall thru */
4925
4926 case R_PPC_ADDR32:
4927 case R_PPC_ADDR24:
4928 case R_PPC_ADDR16:
4929 case R_PPC_ADDR16_LO:
4930 case R_PPC_ADDR16_HI:
4931 case R_PPC_ADDR16_HA:
4932 case R_PPC_ADDR14:
4933 case R_PPC_ADDR14_BRTAKEN:
4934 case R_PPC_ADDR14_BRNTAKEN:
4935 case R_PPC_UADDR32:
4936 case R_PPC_UADDR16:
4937 if (info->shared)
4938 break;
4939
4940 case R_PPC_PLT32:
4941 case R_PPC_PLTREL24:
4942 case R_PPC_PLTREL32:
4943 case R_PPC_PLT16_LO:
4944 case R_PPC_PLT16_HI:
4945 case R_PPC_PLT16_HA:
4946 if (h != NULL)
4947 {
4948 bfd_vma addend = 0;
4949 struct plt_entry *ent;
4950
4951 if (r_type == R_PPC_PLTREL24 && info->shared)
4952 addend = rel->r_addend;
4953 ent = find_plt_ent (&h->plt.plist, got2, addend);
4954 if (ent != NULL && ent->plt.refcount > 0)
4955 ent->plt.refcount -= 1;
4956 }
4957 break;
4958
4959 default:
4960 break;
4961 }
4962 }
4963 return TRUE;
4964 }
4965 \f
4966 /* Set plt output section type, htab->tls_get_addr, and call the
4967 generic ELF tls_setup function. */
4968
4969 asection *
4970 ppc_elf_tls_setup (bfd *obfd,
4971 struct bfd_link_info *info,
4972 int no_tls_get_addr_opt)
4973 {
4974 struct ppc_elf_link_hash_table *htab;
4975
4976 htab = ppc_elf_hash_table (info);
4977 htab->tls_get_addr = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
4978 FALSE, FALSE, TRUE);
4979 if (!no_tls_get_addr_opt)
4980 {
4981 struct elf_link_hash_entry *opt, *tga;
4982 opt = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_opt",
4983 FALSE, FALSE, TRUE);
4984 if (opt != NULL
4985 && (opt->root.type == bfd_link_hash_defined
4986 || opt->root.type == bfd_link_hash_defweak))
4987 {
4988 /* If glibc supports an optimized __tls_get_addr call stub,
4989 signalled by the presence of __tls_get_addr_opt, and we'll
4990 be calling __tls_get_addr via a plt call stub, then
4991 make __tls_get_addr point to __tls_get_addr_opt. */
4992 tga = htab->tls_get_addr;
4993 if (htab->elf.dynamic_sections_created
4994 && tga != NULL
4995 && (tga->type == STT_FUNC
4996 || tga->needs_plt)
4997 && !(SYMBOL_CALLS_LOCAL (info, tga)
4998 || (ELF_ST_VISIBILITY (tga->other) != STV_DEFAULT
4999 && tga->root.type == bfd_link_hash_undefweak)))
5000 {
5001 struct plt_entry *ent;
5002 for (ent = tga->plt.plist; ent != NULL; ent = ent->next)
5003 if (ent->plt.refcount > 0)
5004 break;
5005 if (ent != NULL)
5006 {
5007 tga->root.type = bfd_link_hash_indirect;
5008 tga->root.u.i.link = &opt->root;
5009 ppc_elf_copy_indirect_symbol (info, opt, tga);
5010 if (opt->dynindx != -1)
5011 {
5012 /* Use __tls_get_addr_opt in dynamic relocations. */
5013 opt->dynindx = -1;
5014 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
5015 opt->dynstr_index);
5016 if (!bfd_elf_link_record_dynamic_symbol (info, opt))
5017 return FALSE;
5018 }
5019 htab->tls_get_addr = opt;
5020 }
5021 }
5022 }
5023 else
5024 no_tls_get_addr_opt = TRUE;
5025 }
5026 htab->no_tls_get_addr_opt = no_tls_get_addr_opt;
5027 if (htab->plt_type == PLT_NEW
5028 && htab->plt != NULL
5029 && htab->plt->output_section != NULL)
5030 {
5031 elf_section_type (htab->plt->output_section) = SHT_PROGBITS;
5032 elf_section_flags (htab->plt->output_section) = SHF_ALLOC + SHF_WRITE;
5033 }
5034
5035 return _bfd_elf_tls_setup (obfd, info);
5036 }
5037
5038 /* Return TRUE iff REL is a branch reloc with a global symbol matching
5039 HASH. */
5040
5041 static bfd_boolean
5042 branch_reloc_hash_match (const bfd *ibfd,
5043 const Elf_Internal_Rela *rel,
5044 const struct elf_link_hash_entry *hash)
5045 {
5046 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
5047 enum elf_ppc_reloc_type r_type = ELF32_R_TYPE (rel->r_info);
5048 unsigned int r_symndx = ELF32_R_SYM (rel->r_info);
5049
5050 if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type))
5051 {
5052 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
5053 struct elf_link_hash_entry *h;
5054
5055 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5056 while (h->root.type == bfd_link_hash_indirect
5057 || h->root.type == bfd_link_hash_warning)
5058 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5059 if (h == hash)
5060 return TRUE;
5061 }
5062 return FALSE;
5063 }
5064
5065 /* Run through all the TLS relocs looking for optimization
5066 opportunities. */
5067
5068 bfd_boolean
5069 ppc_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED,
5070 struct bfd_link_info *info)
5071 {
5072 bfd *ibfd;
5073 asection *sec;
5074 struct ppc_elf_link_hash_table *htab;
5075 int pass;
5076
5077 if (info->relocatable || !info->executable)
5078 return TRUE;
5079
5080 htab = ppc_elf_hash_table (info);
5081 if (htab == NULL)
5082 return FALSE;
5083
5084 /* Make two passes through the relocs. First time check that tls
5085 relocs involved in setting up a tls_get_addr call are indeed
5086 followed by such a call. If they are not, don't do any tls
5087 optimization. On the second pass twiddle tls_mask flags to
5088 notify relocate_section that optimization can be done, and
5089 adjust got and plt refcounts. */
5090 for (pass = 0; pass < 2; ++pass)
5091 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
5092 {
5093 Elf_Internal_Sym *locsyms = NULL;
5094 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
5095 asection *got2 = bfd_get_section_by_name (ibfd, ".got2");
5096
5097 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
5098 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
5099 {
5100 Elf_Internal_Rela *relstart, *rel, *relend;
5101 int expecting_tls_get_addr = 0;
5102
5103 /* Read the relocations. */
5104 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
5105 info->keep_memory);
5106 if (relstart == NULL)
5107 return FALSE;
5108
5109 relend = relstart + sec->reloc_count;
5110 for (rel = relstart; rel < relend; rel++)
5111 {
5112 enum elf_ppc_reloc_type r_type;
5113 unsigned long r_symndx;
5114 struct elf_link_hash_entry *h = NULL;
5115 char *tls_mask;
5116 char tls_set, tls_clear;
5117 bfd_boolean is_local;
5118 bfd_signed_vma *got_count;
5119
5120 r_symndx = ELF32_R_SYM (rel->r_info);
5121 if (r_symndx >= symtab_hdr->sh_info)
5122 {
5123 struct elf_link_hash_entry **sym_hashes;
5124
5125 sym_hashes = elf_sym_hashes (ibfd);
5126 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5127 while (h->root.type == bfd_link_hash_indirect
5128 || h->root.type == bfd_link_hash_warning)
5129 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5130 }
5131
5132 is_local = FALSE;
5133 if (h == NULL
5134 || !h->def_dynamic)
5135 is_local = TRUE;
5136
5137 r_type = ELF32_R_TYPE (rel->r_info);
5138 /* If this section has old-style __tls_get_addr calls
5139 without marker relocs, then check that each
5140 __tls_get_addr call reloc is preceded by a reloc
5141 that conceivably belongs to the __tls_get_addr arg
5142 setup insn. If we don't find matching arg setup
5143 relocs, don't do any tls optimization. */
5144 if (pass == 0
5145 && sec->has_tls_get_addr_call
5146 && h != NULL
5147 && h == htab->tls_get_addr
5148 && !expecting_tls_get_addr
5149 && is_branch_reloc (r_type))
5150 {
5151 info->callbacks->minfo ("%H __tls_get_addr lost arg, "
5152 "TLS optimization disabled\n",
5153 ibfd, sec, rel->r_offset);
5154 if (elf_section_data (sec)->relocs != relstart)
5155 free (relstart);
5156 return TRUE;
5157 }
5158
5159 expecting_tls_get_addr = 0;
5160 switch (r_type)
5161 {
5162 case R_PPC_GOT_TLSLD16:
5163 case R_PPC_GOT_TLSLD16_LO:
5164 expecting_tls_get_addr = 1;
5165 /* Fall thru */
5166
5167 case R_PPC_GOT_TLSLD16_HI:
5168 case R_PPC_GOT_TLSLD16_HA:
5169 /* These relocs should never be against a symbol
5170 defined in a shared lib. Leave them alone if
5171 that turns out to be the case. */
5172 if (!is_local)
5173 continue;
5174
5175 /* LD -> LE */
5176 tls_set = 0;
5177 tls_clear = TLS_LD;
5178 break;
5179
5180 case R_PPC_GOT_TLSGD16:
5181 case R_PPC_GOT_TLSGD16_LO:
5182 expecting_tls_get_addr = 1;
5183 /* Fall thru */
5184
5185 case R_PPC_GOT_TLSGD16_HI:
5186 case R_PPC_GOT_TLSGD16_HA:
5187 if (is_local)
5188 /* GD -> LE */
5189 tls_set = 0;
5190 else
5191 /* GD -> IE */
5192 tls_set = TLS_TLS | TLS_TPRELGD;
5193 tls_clear = TLS_GD;
5194 break;
5195
5196 case R_PPC_GOT_TPREL16:
5197 case R_PPC_GOT_TPREL16_LO:
5198 case R_PPC_GOT_TPREL16_HI:
5199 case R_PPC_GOT_TPREL16_HA:
5200 if (is_local)
5201 {
5202 /* IE -> LE */
5203 tls_set = 0;
5204 tls_clear = TLS_TPREL;
5205 break;
5206 }
5207 else
5208 continue;
5209
5210 case R_PPC_TLSGD:
5211 case R_PPC_TLSLD:
5212 expecting_tls_get_addr = 2;
5213 tls_set = 0;
5214 tls_clear = 0;
5215 break;
5216
5217 default:
5218 continue;
5219 }
5220
5221 if (pass == 0)
5222 {
5223 if (!expecting_tls_get_addr
5224 || (expecting_tls_get_addr == 1
5225 && !sec->has_tls_get_addr_call))
5226 continue;
5227
5228 if (rel + 1 < relend
5229 && branch_reloc_hash_match (ibfd, rel + 1,
5230 htab->tls_get_addr))
5231 continue;
5232
5233 /* Uh oh, we didn't find the expected call. We
5234 could just mark this symbol to exclude it
5235 from tls optimization but it's safer to skip
5236 the entire optimization. */
5237 info->callbacks->minfo (_("%H arg lost __tls_get_addr, "
5238 "TLS optimization disabled\n"),
5239 ibfd, sec, rel->r_offset);
5240 if (elf_section_data (sec)->relocs != relstart)
5241 free (relstart);
5242 return TRUE;
5243 }
5244
5245 if (expecting_tls_get_addr)
5246 {
5247 struct plt_entry *ent;
5248 bfd_vma addend = 0;
5249
5250 if (info->shared
5251 && ELF32_R_TYPE (rel[1].r_info) == R_PPC_PLTREL24)
5252 addend = rel[1].r_addend;
5253 ent = find_plt_ent (&htab->tls_get_addr->plt.plist,
5254 got2, addend);
5255 if (ent != NULL && ent->plt.refcount > 0)
5256 ent->plt.refcount -= 1;
5257
5258 if (expecting_tls_get_addr == 2)
5259 continue;
5260 }
5261
5262 if (h != NULL)
5263 {
5264 tls_mask = &ppc_elf_hash_entry (h)->tls_mask;
5265 got_count = &h->got.refcount;
5266 }
5267 else
5268 {
5269 bfd_signed_vma *lgot_refs;
5270 struct plt_entry **local_plt;
5271 char *lgot_masks;
5272
5273 if (locsyms == NULL)
5274 {
5275 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
5276 if (locsyms == NULL)
5277 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
5278 symtab_hdr->sh_info,
5279 0, NULL, NULL, NULL);
5280 if (locsyms == NULL)
5281 {
5282 if (elf_section_data (sec)->relocs != relstart)
5283 free (relstart);
5284 return FALSE;
5285 }
5286 }
5287 lgot_refs = elf_local_got_refcounts (ibfd);
5288 if (lgot_refs == NULL)
5289 abort ();
5290 local_plt = (struct plt_entry **)
5291 (lgot_refs + symtab_hdr->sh_info);
5292 lgot_masks = (char *) (local_plt + symtab_hdr->sh_info);
5293 tls_mask = &lgot_masks[r_symndx];
5294 got_count = &lgot_refs[r_symndx];
5295 }
5296
5297 if (tls_set == 0)
5298 {
5299 /* We managed to get rid of a got entry. */
5300 if (*got_count > 0)
5301 *got_count -= 1;
5302 }
5303
5304 *tls_mask |= tls_set;
5305 *tls_mask &= ~tls_clear;
5306 }
5307
5308 if (elf_section_data (sec)->relocs != relstart)
5309 free (relstart);
5310 }
5311
5312 if (locsyms != NULL
5313 && (symtab_hdr->contents != (unsigned char *) locsyms))
5314 {
5315 if (!info->keep_memory)
5316 free (locsyms);
5317 else
5318 symtab_hdr->contents = (unsigned char *) locsyms;
5319 }
5320 }
5321 return TRUE;
5322 }
5323 \f
5324 /* Return true if we have dynamic relocs that apply to read-only sections. */
5325
5326 static bfd_boolean
5327 readonly_dynrelocs (struct elf_link_hash_entry *h)
5328 {
5329 struct elf_dyn_relocs *p;
5330
5331 for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next)
5332 {
5333 asection *s = p->sec->output_section;
5334
5335 if (s != NULL
5336 && ((s->flags & (SEC_READONLY | SEC_ALLOC))
5337 == (SEC_READONLY | SEC_ALLOC)))
5338 return TRUE;
5339 }
5340 return FALSE;
5341 }
5342
5343 /* Adjust a symbol defined by a dynamic object and referenced by a
5344 regular object. The current definition is in some section of the
5345 dynamic object, but we're not including those sections. We have to
5346 change the definition to something the rest of the link can
5347 understand. */
5348
5349 static bfd_boolean
5350 ppc_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
5351 struct elf_link_hash_entry *h)
5352 {
5353 struct ppc_elf_link_hash_table *htab;
5354 asection *s;
5355
5356 #ifdef DEBUG
5357 fprintf (stderr, "ppc_elf_adjust_dynamic_symbol called for %s\n",
5358 h->root.root.string);
5359 #endif
5360
5361 /* Make sure we know what is going on here. */
5362 htab = ppc_elf_hash_table (info);
5363 BFD_ASSERT (htab->elf.dynobj != NULL
5364 && (h->needs_plt
5365 || h->type == STT_GNU_IFUNC
5366 || h->u.weakdef != NULL
5367 || (h->def_dynamic
5368 && h->ref_regular
5369 && !h->def_regular)));
5370
5371 /* Deal with function syms. */
5372 if (h->type == STT_FUNC
5373 || h->type == STT_GNU_IFUNC
5374 || h->needs_plt)
5375 {
5376 /* Clear procedure linkage table information for any symbol that
5377 won't need a .plt entry. */
5378 struct plt_entry *ent;
5379 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
5380 if (ent->plt.refcount > 0)
5381 break;
5382 if (ent == NULL
5383 || (h->type != STT_GNU_IFUNC
5384 && (SYMBOL_CALLS_LOCAL (info, h)
5385 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
5386 && h->root.type == bfd_link_hash_undefweak))))
5387 {
5388 /* A PLT entry is not required/allowed when:
5389
5390 1. We are not using ld.so; because then the PLT entry
5391 can't be set up, so we can't use one. In this case,
5392 ppc_elf_adjust_dynamic_symbol won't even be called.
5393
5394 2. GC has rendered the entry unused.
5395
5396 3. We know for certain that a call to this symbol
5397 will go to this object, or will remain undefined. */
5398 h->plt.plist = NULL;
5399 h->needs_plt = 0;
5400 }
5401 else
5402 {
5403 /* After adjust_dynamic_symbol, non_got_ref set in the
5404 non-shared case means that we have allocated space in
5405 .dynbss for the symbol and thus dyn_relocs for this
5406 symbol should be discarded.
5407 If we get here we know we are making a PLT entry for this
5408 symbol, and in an executable we'd normally resolve
5409 relocations against this symbol to the PLT entry. Allow
5410 dynamic relocs if the reference is weak, and the dynamic
5411 relocs will not cause text relocation. */
5412 if (!h->ref_regular_nonweak
5413 && h->non_got_ref
5414 && h->type != STT_GNU_IFUNC
5415 && !htab->is_vxworks
5416 && !ppc_elf_hash_entry (h)->has_sda_refs
5417 && !readonly_dynrelocs (h))
5418 h->non_got_ref = 0;
5419 }
5420 return TRUE;
5421 }
5422 else
5423 h->plt.plist = NULL;
5424
5425 /* If this is a weak symbol, and there is a real definition, the
5426 processor independent code will have arranged for us to see the
5427 real definition first, and we can just use the same value. */
5428 if (h->u.weakdef != NULL)
5429 {
5430 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
5431 || h->u.weakdef->root.type == bfd_link_hash_defweak);
5432 h->root.u.def.section = h->u.weakdef->root.u.def.section;
5433 h->root.u.def.value = h->u.weakdef->root.u.def.value;
5434 if (ELIMINATE_COPY_RELOCS)
5435 h->non_got_ref = h->u.weakdef->non_got_ref;
5436 return TRUE;
5437 }
5438
5439 /* This is a reference to a symbol defined by a dynamic object which
5440 is not a function. */
5441
5442 /* If we are creating a shared library, we must presume that the
5443 only references to the symbol are via the global offset table.
5444 For such cases we need not do anything here; the relocations will
5445 be handled correctly by relocate_section. */
5446 if (info->shared)
5447 return TRUE;
5448
5449 /* If there are no references to this symbol that do not use the
5450 GOT, we don't need to generate a copy reloc. */
5451 if (!h->non_got_ref)
5452 return TRUE;
5453
5454 /* If we didn't find any dynamic relocs in read-only sections, then
5455 we'll be keeping the dynamic relocs and avoiding the copy reloc.
5456 We can't do this if there are any small data relocations. This
5457 doesn't work on VxWorks, where we can not have dynamic
5458 relocations (other than copy and jump slot relocations) in an
5459 executable. */
5460 if (ELIMINATE_COPY_RELOCS
5461 && !ppc_elf_hash_entry (h)->has_sda_refs
5462 && !htab->is_vxworks
5463 && !h->def_regular
5464 && !readonly_dynrelocs (h))
5465 {
5466 h->non_got_ref = 0;
5467 return TRUE;
5468 }
5469
5470 /* We must allocate the symbol in our .dynbss section, which will
5471 become part of the .bss section of the executable. There will be
5472 an entry for this symbol in the .dynsym section. The dynamic
5473 object will contain position independent code, so all references
5474 from the dynamic object to this symbol will go through the global
5475 offset table. The dynamic linker will use the .dynsym entry to
5476 determine the address it must put in the global offset table, so
5477 both the dynamic object and the regular object will refer to the
5478 same memory location for the variable.
5479
5480 Of course, if the symbol is referenced using SDAREL relocs, we
5481 must instead allocate it in .sbss. */
5482
5483 if (ppc_elf_hash_entry (h)->has_sda_refs)
5484 s = htab->dynsbss;
5485 else
5486 s = htab->dynbss;
5487 BFD_ASSERT (s != NULL);
5488
5489 /* We must generate a R_PPC_COPY reloc to tell the dynamic linker to
5490 copy the initial value out of the dynamic object and into the
5491 runtime process image. We need to remember the offset into the
5492 .rela.bss section we are going to use. */
5493 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
5494 {
5495 asection *srel;
5496
5497 if (ppc_elf_hash_entry (h)->has_sda_refs)
5498 srel = htab->relsbss;
5499 else
5500 srel = htab->relbss;
5501 BFD_ASSERT (srel != NULL);
5502 srel->size += sizeof (Elf32_External_Rela);
5503 h->needs_copy = 1;
5504 }
5505
5506 return _bfd_elf_adjust_dynamic_copy (h, s);
5507 }
5508 \f
5509 /* Generate a symbol to mark plt call stubs. For non-PIC code the sym is
5510 xxxxxxxx.plt_call32.<callee> where xxxxxxxx is a hex number, usually 0,
5511 specifying the addend on the plt relocation. For -fpic code, the sym
5512 is xxxxxxxx.plt_pic32.<callee>, and for -fPIC
5513 xxxxxxxx.got2.plt_pic32.<callee>. */
5514
5515 static bfd_boolean
5516 add_stub_sym (struct plt_entry *ent,
5517 struct elf_link_hash_entry *h,
5518 struct bfd_link_info *info)
5519 {
5520 struct elf_link_hash_entry *sh;
5521 size_t len1, len2, len3;
5522 char *name;
5523 const char *stub;
5524 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
5525
5526 if (info->shared)
5527 stub = ".plt_pic32.";
5528 else
5529 stub = ".plt_call32.";
5530
5531 len1 = strlen (h->root.root.string);
5532 len2 = strlen (stub);
5533 len3 = 0;
5534 if (ent->sec)
5535 len3 = strlen (ent->sec->name);
5536 name = bfd_malloc (len1 + len2 + len3 + 9);
5537 if (name == NULL)
5538 return FALSE;
5539 sprintf (name, "%08x", (unsigned) ent->addend & 0xffffffff);
5540 if (ent->sec)
5541 memcpy (name + 8, ent->sec->name, len3);
5542 memcpy (name + 8 + len3, stub, len2);
5543 memcpy (name + 8 + len3 + len2, h->root.root.string, len1 + 1);
5544 sh = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
5545 if (sh == NULL)
5546 return FALSE;
5547 if (sh->root.type == bfd_link_hash_new)
5548 {
5549 sh->root.type = bfd_link_hash_defined;
5550 sh->root.u.def.section = htab->glink;
5551 sh->root.u.def.value = ent->glink_offset;
5552 sh->ref_regular = 1;
5553 sh->def_regular = 1;
5554 sh->ref_regular_nonweak = 1;
5555 sh->forced_local = 1;
5556 sh->non_elf = 0;
5557 }
5558 return TRUE;
5559 }
5560
5561 /* Allocate NEED contiguous space in .got, and return the offset.
5562 Handles allocation of the got header when crossing 32k. */
5563
5564 static bfd_vma
5565 allocate_got (struct ppc_elf_link_hash_table *htab, unsigned int need)
5566 {
5567 bfd_vma where;
5568 unsigned int max_before_header;
5569
5570 if (htab->plt_type == PLT_VXWORKS)
5571 {
5572 where = htab->got->size;
5573 htab->got->size += need;
5574 }
5575 else
5576 {
5577 max_before_header = htab->plt_type == PLT_NEW ? 32768 : 32764;
5578 if (need <= htab->got_gap)
5579 {
5580 where = max_before_header - htab->got_gap;
5581 htab->got_gap -= need;
5582 }
5583 else
5584 {
5585 if (htab->got->size + need > max_before_header
5586 && htab->got->size <= max_before_header)
5587 {
5588 htab->got_gap = max_before_header - htab->got->size;
5589 htab->got->size = max_before_header + htab->got_header_size;
5590 }
5591 where = htab->got->size;
5592 htab->got->size += need;
5593 }
5594 }
5595 return where;
5596 }
5597
5598 /* Allocate space in associated reloc sections for dynamic relocs. */
5599
5600 static bfd_boolean
5601 allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
5602 {
5603 struct bfd_link_info *info = inf;
5604 struct ppc_elf_link_hash_entry *eh;
5605 struct ppc_elf_link_hash_table *htab;
5606 struct elf_dyn_relocs *p;
5607
5608 if (h->root.type == bfd_link_hash_indirect)
5609 return TRUE;
5610
5611 htab = ppc_elf_hash_table (info);
5612 if (htab->elf.dynamic_sections_created
5613 || h->type == STT_GNU_IFUNC)
5614 {
5615 struct plt_entry *ent;
5616 bfd_boolean doneone = FALSE;
5617 bfd_vma plt_offset = 0, glink_offset = 0;
5618 bfd_boolean dyn;
5619
5620 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
5621 if (ent->plt.refcount > 0)
5622 {
5623 /* Make sure this symbol is output as a dynamic symbol. */
5624 if (h->dynindx == -1
5625 && !h->forced_local
5626 && !h->def_regular
5627 && htab->elf.dynamic_sections_created)
5628 {
5629 if (! bfd_elf_link_record_dynamic_symbol (info, h))
5630 return FALSE;
5631 }
5632
5633 dyn = htab->elf.dynamic_sections_created;
5634 if (info->shared
5635 || h->type == STT_GNU_IFUNC
5636 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))
5637 {
5638 asection *s = htab->plt;
5639 if (!dyn || h->dynindx == -1)
5640 s = htab->iplt;
5641
5642 if (htab->plt_type == PLT_NEW || !dyn || h->dynindx == -1)
5643 {
5644 if (!doneone)
5645 {
5646 plt_offset = s->size;
5647 s->size += 4;
5648 }
5649 ent->plt.offset = plt_offset;
5650
5651 s = htab->glink;
5652 if (!doneone || info->shared)
5653 {
5654 glink_offset = s->size;
5655 s->size += GLINK_ENTRY_SIZE;
5656 if (h == htab->tls_get_addr
5657 && !htab->no_tls_get_addr_opt)
5658 s->size += TLS_GET_ADDR_GLINK_SIZE - GLINK_ENTRY_SIZE;
5659 }
5660 if (!doneone
5661 && !info->shared
5662 && h->def_dynamic
5663 && !h->def_regular)
5664 {
5665 h->root.u.def.section = s;
5666 h->root.u.def.value = glink_offset;
5667 }
5668 ent->glink_offset = glink_offset;
5669
5670 if (htab->emit_stub_syms
5671 && !add_stub_sym (ent, h, info))
5672 return FALSE;
5673 }
5674 else
5675 {
5676 if (!doneone)
5677 {
5678 /* If this is the first .plt entry, make room
5679 for the special first entry. */
5680 if (s->size == 0)
5681 s->size += htab->plt_initial_entry_size;
5682
5683 /* The PowerPC PLT is actually composed of two
5684 parts, the first part is 2 words (for a load
5685 and a jump), and then there is a remaining
5686 word available at the end. */
5687 plt_offset = (htab->plt_initial_entry_size
5688 + (htab->plt_slot_size
5689 * ((s->size
5690 - htab->plt_initial_entry_size)
5691 / htab->plt_entry_size)));
5692
5693 /* If this symbol is not defined in a regular
5694 file, and we are not generating a shared
5695 library, then set the symbol to this location
5696 in the .plt. This is to avoid text
5697 relocations, and is required to make
5698 function pointers compare as equal between
5699 the normal executable and the shared library. */
5700 if (! info->shared
5701 && h->def_dynamic
5702 && !h->def_regular)
5703 {
5704 h->root.u.def.section = s;
5705 h->root.u.def.value = plt_offset;
5706 }
5707
5708 /* Make room for this entry. */
5709 s->size += htab->plt_entry_size;
5710 /* After the 8192nd entry, room for two entries
5711 is allocated. */
5712 if (htab->plt_type == PLT_OLD
5713 && (s->size - htab->plt_initial_entry_size)
5714 / htab->plt_entry_size
5715 > PLT_NUM_SINGLE_ENTRIES)
5716 s->size += htab->plt_entry_size;
5717 }
5718 ent->plt.offset = plt_offset;
5719 }
5720
5721 /* We also need to make an entry in the .rela.plt section. */
5722 if (!doneone)
5723 {
5724 if (!htab->elf.dynamic_sections_created
5725 || h->dynindx == -1)
5726 htab->reliplt->size += sizeof (Elf32_External_Rela);
5727 else
5728 {
5729 htab->relplt->size += sizeof (Elf32_External_Rela);
5730
5731 if (htab->plt_type == PLT_VXWORKS)
5732 {
5733 /* Allocate space for the unloaded relocations. */
5734 if (!info->shared
5735 && htab->elf.dynamic_sections_created)
5736 {
5737 if (ent->plt.offset
5738 == (bfd_vma) htab->plt_initial_entry_size)
5739 {
5740 htab->srelplt2->size
5741 += (sizeof (Elf32_External_Rela)
5742 * VXWORKS_PLTRESOLVE_RELOCS);
5743 }
5744
5745 htab->srelplt2->size
5746 += (sizeof (Elf32_External_Rela)
5747 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS);
5748 }
5749
5750 /* Every PLT entry has an associated GOT entry in
5751 .got.plt. */
5752 htab->sgotplt->size += 4;
5753 }
5754 }
5755 doneone = TRUE;
5756 }
5757 }
5758 else
5759 ent->plt.offset = (bfd_vma) -1;
5760 }
5761 else
5762 ent->plt.offset = (bfd_vma) -1;
5763
5764 if (!doneone)
5765 {
5766 h->plt.plist = NULL;
5767 h->needs_plt = 0;
5768 }
5769 }
5770 else
5771 {
5772 h->plt.plist = NULL;
5773 h->needs_plt = 0;
5774 }
5775
5776 eh = (struct ppc_elf_link_hash_entry *) h;
5777 if (eh->elf.got.refcount > 0)
5778 {
5779 bfd_boolean dyn;
5780 unsigned int need;
5781
5782 /* Make sure this symbol is output as a dynamic symbol. */
5783 if (eh->elf.dynindx == -1
5784 && !eh->elf.forced_local
5785 && eh->elf.type != STT_GNU_IFUNC
5786 && htab->elf.dynamic_sections_created)
5787 {
5788 if (!bfd_elf_link_record_dynamic_symbol (info, &eh->elf))
5789 return FALSE;
5790 }
5791
5792 need = 0;
5793 if ((eh->tls_mask & TLS_TLS) != 0)
5794 {
5795 if ((eh->tls_mask & TLS_LD) != 0)
5796 {
5797 if (!eh->elf.def_dynamic)
5798 /* We'll just use htab->tlsld_got.offset. This should
5799 always be the case. It's a little odd if we have
5800 a local dynamic reloc against a non-local symbol. */
5801 htab->tlsld_got.refcount += 1;
5802 else
5803 need += 8;
5804 }
5805 if ((eh->tls_mask & TLS_GD) != 0)
5806 need += 8;
5807 if ((eh->tls_mask & (TLS_TPREL | TLS_TPRELGD)) != 0)
5808 need += 4;
5809 if ((eh->tls_mask & TLS_DTPREL) != 0)
5810 need += 4;
5811 }
5812 else
5813 need += 4;
5814 if (need == 0)
5815 eh->elf.got.offset = (bfd_vma) -1;
5816 else
5817 {
5818 eh->elf.got.offset = allocate_got (htab, need);
5819 dyn = htab->elf.dynamic_sections_created;
5820 if ((info->shared
5821 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, &eh->elf))
5822 && (ELF_ST_VISIBILITY (eh->elf.other) == STV_DEFAULT
5823 || eh->elf.root.type != bfd_link_hash_undefweak))
5824 {
5825 asection *rsec = htab->relgot;
5826 /* All the entries we allocated need relocs.
5827 Except LD only needs one. */
5828 if ((eh->tls_mask & TLS_LD) != 0
5829 && eh->elf.def_dynamic)
5830 need -= 4;
5831 rsec->size += need * (sizeof (Elf32_External_Rela) / 4);
5832 }
5833 }
5834 }
5835 else
5836 eh->elf.got.offset = (bfd_vma) -1;
5837
5838 if (eh->dyn_relocs == NULL
5839 || !htab->elf.dynamic_sections_created)
5840 return TRUE;
5841
5842 /* In the shared -Bsymbolic case, discard space allocated for
5843 dynamic pc-relative relocs against symbols which turn out to be
5844 defined in regular objects. For the normal shared case, discard
5845 space for relocs that have become local due to symbol visibility
5846 changes. */
5847
5848 if (info->shared)
5849 {
5850 /* Relocs that use pc_count are those that appear on a call insn,
5851 or certain REL relocs (see must_be_dyn_reloc) that can be
5852 generated via assembly. We want calls to protected symbols to
5853 resolve directly to the function rather than going via the plt.
5854 If people want function pointer comparisons to work as expected
5855 then they should avoid writing weird assembly. */
5856 if (SYMBOL_CALLS_LOCAL (info, h))
5857 {
5858 struct elf_dyn_relocs **pp;
5859
5860 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
5861 {
5862 p->count -= p->pc_count;
5863 p->pc_count = 0;
5864 if (p->count == 0)
5865 *pp = p->next;
5866 else
5867 pp = &p->next;
5868 }
5869 }
5870
5871 if (htab->is_vxworks)
5872 {
5873 struct elf_dyn_relocs **pp;
5874
5875 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
5876 {
5877 if (strcmp (p->sec->output_section->name, ".tls_vars") == 0)
5878 *pp = p->next;
5879 else
5880 pp = &p->next;
5881 }
5882 }
5883
5884 /* Discard relocs on undefined symbols that must be local. */
5885 if (eh->dyn_relocs != NULL
5886 && h->root.type == bfd_link_hash_undefined
5887 && (ELF_ST_VISIBILITY (h->other) == STV_HIDDEN
5888 || ELF_ST_VISIBILITY (h->other) == STV_INTERNAL))
5889 eh->dyn_relocs = NULL;
5890
5891 /* Also discard relocs on undefined weak syms with non-default
5892 visibility. */
5893 if (eh->dyn_relocs != NULL
5894 && h->root.type == bfd_link_hash_undefweak)
5895 {
5896 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
5897 eh->dyn_relocs = NULL;
5898
5899 /* Make sure undefined weak symbols are output as a dynamic
5900 symbol in PIEs. */
5901 else if (h->dynindx == -1
5902 && !h->forced_local
5903 && !h->def_regular)
5904 {
5905 if (! bfd_elf_link_record_dynamic_symbol (info, h))
5906 return FALSE;
5907 }
5908 }
5909 }
5910 else if (ELIMINATE_COPY_RELOCS)
5911 {
5912 /* For the non-shared case, discard space for relocs against
5913 symbols which turn out to need copy relocs or are not
5914 dynamic. */
5915
5916 if (!h->non_got_ref
5917 && !h->def_regular)
5918 {
5919 /* Make sure this symbol is output as a dynamic symbol.
5920 Undefined weak syms won't yet be marked as dynamic. */
5921 if (h->dynindx == -1
5922 && !h->forced_local)
5923 {
5924 if (! bfd_elf_link_record_dynamic_symbol (info, h))
5925 return FALSE;
5926 }
5927
5928 /* If that succeeded, we know we'll be keeping all the
5929 relocs. */
5930 if (h->dynindx != -1)
5931 goto keep;
5932 }
5933
5934 eh->dyn_relocs = NULL;
5935
5936 keep: ;
5937 }
5938
5939 /* Finally, allocate space. */
5940 for (p = eh->dyn_relocs; p != NULL; p = p->next)
5941 {
5942 asection *sreloc = elf_section_data (p->sec)->sreloc;
5943 if (!htab->elf.dynamic_sections_created)
5944 sreloc = htab->reliplt;
5945 sreloc->size += p->count * sizeof (Elf32_External_Rela);
5946 }
5947
5948 return TRUE;
5949 }
5950
5951 /* Set DF_TEXTREL if we find any dynamic relocs that apply to
5952 read-only sections. */
5953
5954 static bfd_boolean
5955 maybe_set_textrel (struct elf_link_hash_entry *h, void *info)
5956 {
5957 if (h->root.type == bfd_link_hash_indirect)
5958 return TRUE;
5959
5960 if (readonly_dynrelocs (h))
5961 {
5962 ((struct bfd_link_info *) info)->flags |= DF_TEXTREL;
5963
5964 /* Not an error, just cut short the traversal. */
5965 return FALSE;
5966 }
5967 return TRUE;
5968 }
5969
5970 static const unsigned char glink_eh_frame_cie[] =
5971 {
5972 0, 0, 0, 16, /* length. */
5973 0, 0, 0, 0, /* id. */
5974 1, /* CIE version. */
5975 'z', 'R', 0, /* Augmentation string. */
5976 4, /* Code alignment. */
5977 0x7c, /* Data alignment. */
5978 65, /* RA reg. */
5979 1, /* Augmentation size. */
5980 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding. */
5981 DW_CFA_def_cfa, 1, 0 /* def_cfa: r1 offset 0. */
5982 };
5983
5984 /* Set the sizes of the dynamic sections. */
5985
5986 static bfd_boolean
5987 ppc_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
5988 struct bfd_link_info *info)
5989 {
5990 struct ppc_elf_link_hash_table *htab;
5991 asection *s;
5992 bfd_boolean relocs;
5993 bfd *ibfd;
5994
5995 #ifdef DEBUG
5996 fprintf (stderr, "ppc_elf_size_dynamic_sections called\n");
5997 #endif
5998
5999 htab = ppc_elf_hash_table (info);
6000 BFD_ASSERT (htab->elf.dynobj != NULL);
6001
6002 if (elf_hash_table (info)->dynamic_sections_created)
6003 {
6004 /* Set the contents of the .interp section to the interpreter. */
6005 if (info->executable)
6006 {
6007 s = bfd_get_section_by_name (htab->elf.dynobj, ".interp");
6008 BFD_ASSERT (s != NULL);
6009 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
6010 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
6011 }
6012 }
6013
6014 if (htab->plt_type == PLT_OLD)
6015 htab->got_header_size = 16;
6016 else if (htab->plt_type == PLT_NEW)
6017 htab->got_header_size = 12;
6018
6019 /* Set up .got offsets for local syms, and space for local dynamic
6020 relocs. */
6021 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
6022 {
6023 bfd_signed_vma *local_got;
6024 bfd_signed_vma *end_local_got;
6025 struct plt_entry **local_plt;
6026 struct plt_entry **end_local_plt;
6027 char *lgot_masks;
6028 bfd_size_type locsymcount;
6029 Elf_Internal_Shdr *symtab_hdr;
6030
6031 if (!is_ppc_elf (ibfd))
6032 continue;
6033
6034 for (s = ibfd->sections; s != NULL; s = s->next)
6035 {
6036 struct elf_dyn_relocs *p;
6037
6038 for (p = ((struct elf_dyn_relocs *)
6039 elf_section_data (s)->local_dynrel);
6040 p != NULL;
6041 p = p->next)
6042 {
6043 if (!bfd_is_abs_section (p->sec)
6044 && bfd_is_abs_section (p->sec->output_section))
6045 {
6046 /* Input section has been discarded, either because
6047 it is a copy of a linkonce section or due to
6048 linker script /DISCARD/, so we'll be discarding
6049 the relocs too. */
6050 }
6051 else if (htab->is_vxworks
6052 && strcmp (p->sec->output_section->name,
6053 ".tls_vars") == 0)
6054 {
6055 /* Relocations in vxworks .tls_vars sections are
6056 handled specially by the loader. */
6057 }
6058 else if (p->count != 0)
6059 {
6060 asection *sreloc = elf_section_data (p->sec)->sreloc;
6061 if (!htab->elf.dynamic_sections_created)
6062 sreloc = htab->reliplt;
6063 sreloc->size += p->count * sizeof (Elf32_External_Rela);
6064 if ((p->sec->output_section->flags
6065 & (SEC_READONLY | SEC_ALLOC))
6066 == (SEC_READONLY | SEC_ALLOC))
6067 info->flags |= DF_TEXTREL;
6068 }
6069 }
6070 }
6071
6072 local_got = elf_local_got_refcounts (ibfd);
6073 if (!local_got)
6074 continue;
6075
6076 symtab_hdr = &elf_symtab_hdr (ibfd);
6077 locsymcount = symtab_hdr->sh_info;
6078 end_local_got = local_got + locsymcount;
6079 local_plt = (struct plt_entry **) end_local_got;
6080 end_local_plt = local_plt + locsymcount;
6081 lgot_masks = (char *) end_local_plt;
6082
6083 for (; local_got < end_local_got; ++local_got, ++lgot_masks)
6084 if (*local_got > 0)
6085 {
6086 unsigned int need = 0;
6087 if ((*lgot_masks & TLS_TLS) != 0)
6088 {
6089 if ((*lgot_masks & TLS_GD) != 0)
6090 need += 8;
6091 if ((*lgot_masks & TLS_LD) != 0)
6092 htab->tlsld_got.refcount += 1;
6093 if ((*lgot_masks & (TLS_TPREL | TLS_TPRELGD)) != 0)
6094 need += 4;
6095 if ((*lgot_masks & TLS_DTPREL) != 0)
6096 need += 4;
6097 }
6098 else
6099 need += 4;
6100 if (need == 0)
6101 *local_got = (bfd_vma) -1;
6102 else
6103 {
6104 *local_got = allocate_got (htab, need);
6105 if (info->shared)
6106 htab->relgot->size += (need
6107 * (sizeof (Elf32_External_Rela) / 4));
6108 }
6109 }
6110 else
6111 *local_got = (bfd_vma) -1;
6112
6113 if (htab->is_vxworks)
6114 continue;
6115
6116 /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */
6117 for (; local_plt < end_local_plt; ++local_plt)
6118 {
6119 struct plt_entry *ent;
6120 bfd_boolean doneone = FALSE;
6121 bfd_vma plt_offset = 0, glink_offset = 0;
6122
6123 for (ent = *local_plt; ent != NULL; ent = ent->next)
6124 if (ent->plt.refcount > 0)
6125 {
6126 s = htab->iplt;
6127
6128 if (!doneone)
6129 {
6130 plt_offset = s->size;
6131 s->size += 4;
6132 }
6133 ent->plt.offset = plt_offset;
6134
6135 s = htab->glink;
6136 if (!doneone || info->shared)
6137 {
6138 glink_offset = s->size;
6139 s->size += GLINK_ENTRY_SIZE;
6140 }
6141 ent->glink_offset = glink_offset;
6142
6143 if (!doneone)
6144 {
6145 htab->reliplt->size += sizeof (Elf32_External_Rela);
6146 doneone = TRUE;
6147 }
6148 }
6149 else
6150 ent->plt.offset = (bfd_vma) -1;
6151 }
6152 }
6153
6154 /* Allocate space for global sym dynamic relocs. */
6155 elf_link_hash_traverse (elf_hash_table (info), allocate_dynrelocs, info);
6156
6157 if (htab->tlsld_got.refcount > 0)
6158 {
6159 htab->tlsld_got.offset = allocate_got (htab, 8);
6160 if (info->shared)
6161 htab->relgot->size += sizeof (Elf32_External_Rela);
6162 }
6163 else
6164 htab->tlsld_got.offset = (bfd_vma) -1;
6165
6166 if (htab->got != NULL && htab->plt_type != PLT_VXWORKS)
6167 {
6168 unsigned int g_o_t = 32768;
6169
6170 /* If we haven't allocated the header, do so now. When we get here,
6171 for old plt/got the got size will be 0 to 32764 (not allocated),
6172 or 32780 to 65536 (header allocated). For new plt/got, the
6173 corresponding ranges are 0 to 32768 and 32780 to 65536. */
6174 if (htab->got->size <= 32768)
6175 {
6176 g_o_t = htab->got->size;
6177 if (htab->plt_type == PLT_OLD)
6178 g_o_t += 4;
6179 htab->got->size += htab->got_header_size;
6180 }
6181
6182 htab->elf.hgot->root.u.def.value = g_o_t;
6183 }
6184 if (info->shared)
6185 {
6186 struct elf_link_hash_entry *sda = htab->sdata[0].sym;
6187 if (sda != NULL
6188 && !(sda->root.type == bfd_link_hash_defined
6189 || sda->root.type == bfd_link_hash_defweak))
6190 {
6191 sda->root.type = bfd_link_hash_defined;
6192 sda->root.u.def.section = htab->elf.hgot->root.u.def.section;
6193 sda->root.u.def.value = htab->elf.hgot->root.u.def.value;
6194 }
6195 }
6196
6197 if (htab->glink != NULL
6198 && htab->glink->size != 0
6199 && htab->elf.dynamic_sections_created)
6200 {
6201 htab->glink_pltresolve = htab->glink->size;
6202 /* Space for the branch table. */
6203 htab->glink->size += htab->glink->size / (GLINK_ENTRY_SIZE / 4) - 4;
6204 /* Pad out to align the start of PLTresolve. */
6205 htab->glink->size += -htab->glink->size & 15;
6206 htab->glink->size += GLINK_PLTRESOLVE;
6207
6208 if (htab->emit_stub_syms)
6209 {
6210 struct elf_link_hash_entry *sh;
6211 sh = elf_link_hash_lookup (&htab->elf, "__glink",
6212 TRUE, FALSE, FALSE);
6213 if (sh == NULL)
6214 return FALSE;
6215 if (sh->root.type == bfd_link_hash_new)
6216 {
6217 sh->root.type = bfd_link_hash_defined;
6218 sh->root.u.def.section = htab->glink;
6219 sh->root.u.def.value = htab->glink_pltresolve;
6220 sh->ref_regular = 1;
6221 sh->def_regular = 1;
6222 sh->ref_regular_nonweak = 1;
6223 sh->forced_local = 1;
6224 sh->non_elf = 0;
6225 }
6226 sh = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve",
6227 TRUE, FALSE, FALSE);
6228 if (sh == NULL)
6229 return FALSE;
6230 if (sh->root.type == bfd_link_hash_new)
6231 {
6232 sh->root.type = bfd_link_hash_defined;
6233 sh->root.u.def.section = htab->glink;
6234 sh->root.u.def.value = htab->glink->size - GLINK_PLTRESOLVE;
6235 sh->ref_regular = 1;
6236 sh->def_regular = 1;
6237 sh->ref_regular_nonweak = 1;
6238 sh->forced_local = 1;
6239 sh->non_elf = 0;
6240 }
6241 }
6242 }
6243
6244 if (htab->glink != NULL
6245 && htab->glink->size != 0
6246 && htab->glink_eh_frame != NULL
6247 && !bfd_is_abs_section (htab->glink_eh_frame->output_section))
6248 {
6249 s = htab->glink_eh_frame;
6250 s->size = sizeof (glink_eh_frame_cie) + 20;
6251 if (info->shared)
6252 {
6253 s->size += 4;
6254 if (htab->glink->size - GLINK_PLTRESOLVE + 8 >= 256)
6255 s->size += 4;
6256 }
6257 }
6258
6259 /* We've now determined the sizes of the various dynamic sections.
6260 Allocate memory for them. */
6261 relocs = FALSE;
6262 for (s = htab->elf.dynobj->sections; s != NULL; s = s->next)
6263 {
6264 bfd_boolean strip_section = TRUE;
6265
6266 if ((s->flags & SEC_LINKER_CREATED) == 0)
6267 continue;
6268
6269 if (s == htab->plt
6270 || s == htab->got)
6271 {
6272 /* We'd like to strip these sections if they aren't needed, but if
6273 we've exported dynamic symbols from them we must leave them.
6274 It's too late to tell BFD to get rid of the symbols. */
6275 if (htab->elf.hplt != NULL)
6276 strip_section = FALSE;
6277 /* Strip this section if we don't need it; see the
6278 comment below. */
6279 }
6280 else if (s == htab->iplt
6281 || s == htab->glink
6282 || s == htab->glink_eh_frame
6283 || s == htab->sgotplt
6284 || s == htab->sbss
6285 || s == htab->dynbss
6286 || s == htab->dynsbss
6287 || s == htab->sdata[0].section
6288 || s == htab->sdata[1].section)
6289 {
6290 /* Strip these too. */
6291 }
6292 else if (CONST_STRNEQ (bfd_get_section_name (htab->elf.dynobj, s),
6293 ".rela"))
6294 {
6295 if (s->size != 0)
6296 {
6297 /* Remember whether there are any relocation sections. */
6298 relocs = TRUE;
6299
6300 /* We use the reloc_count field as a counter if we need
6301 to copy relocs into the output file. */
6302 s->reloc_count = 0;
6303 }
6304 }
6305 else
6306 {
6307 /* It's not one of our sections, so don't allocate space. */
6308 continue;
6309 }
6310
6311 if (s->size == 0 && strip_section)
6312 {
6313 /* If we don't need this section, strip it from the
6314 output file. This is mostly to handle .rela.bss and
6315 .rela.plt. We must create both sections in
6316 create_dynamic_sections, because they must be created
6317 before the linker maps input sections to output
6318 sections. The linker does that before
6319 adjust_dynamic_symbol is called, and it is that
6320 function which decides whether anything needs to go
6321 into these sections. */
6322 s->flags |= SEC_EXCLUDE;
6323 continue;
6324 }
6325
6326 if ((s->flags & SEC_HAS_CONTENTS) == 0)
6327 continue;
6328
6329 /* Allocate memory for the section contents. */
6330 s->contents = bfd_zalloc (htab->elf.dynobj, s->size);
6331 if (s->contents == NULL)
6332 return FALSE;
6333 }
6334
6335 if (htab->elf.dynamic_sections_created)
6336 {
6337 /* Add some entries to the .dynamic section. We fill in the
6338 values later, in ppc_elf_finish_dynamic_sections, but we
6339 must add the entries now so that we get the correct size for
6340 the .dynamic section. The DT_DEBUG entry is filled in by the
6341 dynamic linker and used by the debugger. */
6342 #define add_dynamic_entry(TAG, VAL) \
6343 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
6344
6345 if (info->executable)
6346 {
6347 if (!add_dynamic_entry (DT_DEBUG, 0))
6348 return FALSE;
6349 }
6350
6351 if (htab->plt != NULL && htab->plt->size != 0)
6352 {
6353 if (!add_dynamic_entry (DT_PLTGOT, 0)
6354 || !add_dynamic_entry (DT_PLTRELSZ, 0)
6355 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
6356 || !add_dynamic_entry (DT_JMPREL, 0))
6357 return FALSE;
6358 }
6359
6360 if (htab->glink != NULL && htab->glink->size != 0)
6361 {
6362 if (!add_dynamic_entry (DT_PPC_GOT, 0))
6363 return FALSE;
6364 if (!htab->no_tls_get_addr_opt
6365 && htab->tls_get_addr != NULL
6366 && htab->tls_get_addr->plt.plist != NULL
6367 && !add_dynamic_entry (DT_PPC_TLSOPT, 0))
6368 return FALSE;
6369 }
6370
6371 if (relocs)
6372 {
6373 if (!add_dynamic_entry (DT_RELA, 0)
6374 || !add_dynamic_entry (DT_RELASZ, 0)
6375 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
6376 return FALSE;
6377 }
6378
6379 /* If any dynamic relocs apply to a read-only section, then we
6380 need a DT_TEXTREL entry. */
6381 if ((info->flags & DF_TEXTREL) == 0)
6382 elf_link_hash_traverse (elf_hash_table (info), maybe_set_textrel,
6383 info);
6384
6385 if ((info->flags & DF_TEXTREL) != 0)
6386 {
6387 if (!add_dynamic_entry (DT_TEXTREL, 0))
6388 return FALSE;
6389 }
6390 if (htab->is_vxworks
6391 && !elf_vxworks_add_dynamic_entries (output_bfd, info))
6392 return FALSE;
6393 }
6394 #undef add_dynamic_entry
6395
6396 return TRUE;
6397 }
6398
6399 /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
6400
6401 static bfd_boolean
6402 ppc_elf_hash_symbol (struct elf_link_hash_entry *h)
6403 {
6404 if (h->plt.plist != NULL
6405 && !h->def_regular
6406 && (!h->pointer_equality_needed
6407 || !h->ref_regular_nonweak))
6408 return FALSE;
6409
6410 return _bfd_elf_hash_symbol (h);
6411 }
6412 \f
6413 #define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0]))
6414
6415 /* Relaxation trampolines. r12 is available for clobbering (r11, is
6416 used for some functions that are allowed to break the ABI). */
6417 static const int shared_stub_entry[] =
6418 {
6419 0x7c0802a6, /* mflr 0 */
6420 0x429f0005, /* bcl 20, 31, .Lxxx */
6421 0x7d8802a6, /* mflr 12 */
6422 0x3d8c0000, /* addis 12, 12, (xxx-.Lxxx)@ha */
6423 0x398c0008, /* addi 12, 12, (xxx-.Lxxx)@l */
6424 0x7c0803a6, /* mtlr 0 */
6425 0x7d8903a6, /* mtctr 12 */
6426 0x4e800420, /* bctr */
6427 };
6428
6429 static const int stub_entry[] =
6430 {
6431 0x3d800000, /* lis 12,xxx@ha */
6432 0x398c0000, /* addi 12,12,xxx@l */
6433 0x7d8903a6, /* mtctr 12 */
6434 0x4e800420, /* bctr */
6435 };
6436
6437 static bfd_boolean
6438 ppc_elf_relax_section (bfd *abfd,
6439 asection *isec,
6440 struct bfd_link_info *link_info,
6441 bfd_boolean *again)
6442 {
6443 struct one_fixup
6444 {
6445 struct one_fixup *next;
6446 asection *tsec;
6447 /* Final link, can use the symbol offset. For a
6448 relocatable link we use the symbol's index. */
6449 bfd_vma toff;
6450 bfd_vma trampoff;
6451 };
6452
6453 Elf_Internal_Shdr *symtab_hdr;
6454 bfd_byte *contents = NULL;
6455 Elf_Internal_Sym *isymbuf = NULL;
6456 Elf_Internal_Rela *internal_relocs = NULL;
6457 Elf_Internal_Rela *irel, *irelend;
6458 struct one_fixup *fixups = NULL;
6459 unsigned changes = 0;
6460 struct ppc_elf_link_hash_table *htab;
6461 bfd_size_type trampoff;
6462 asection *got2;
6463 bfd_boolean maybe_pasted;
6464
6465 *again = FALSE;
6466
6467 /* Nothing to do if there are no relocations, and no need to do
6468 anything with non-alloc or non-code sections. */
6469 if ((isec->flags & SEC_ALLOC) == 0
6470 || (isec->flags & SEC_CODE) == 0
6471 || (isec->flags & SEC_RELOC) == 0
6472 || isec->reloc_count == 0)
6473 return TRUE;
6474
6475 /* We cannot represent the required PIC relocs in the output, so don't
6476 do anything. The linker doesn't support mixing -shared and -r
6477 anyway. */
6478 if (link_info->relocatable && link_info->shared)
6479 return TRUE;
6480
6481 trampoff = (isec->size + 3) & (bfd_vma) -4;
6482 maybe_pasted = (strcmp (isec->output_section->name, ".init") == 0
6483 || strcmp (isec->output_section->name, ".fini") == 0);
6484 /* Space for a branch around any trampolines. */
6485 if (maybe_pasted)
6486 trampoff += 4;
6487
6488 symtab_hdr = &elf_symtab_hdr (abfd);
6489
6490 /* Get a copy of the native relocations. */
6491 internal_relocs = _bfd_elf_link_read_relocs (abfd, isec, NULL, NULL,
6492 link_info->keep_memory);
6493 if (internal_relocs == NULL)
6494 goto error_return;
6495
6496 htab = ppc_elf_hash_table (link_info);
6497 got2 = bfd_get_section_by_name (abfd, ".got2");
6498
6499 irelend = internal_relocs + isec->reloc_count;
6500 for (irel = internal_relocs; irel < irelend; irel++)
6501 {
6502 unsigned long r_type = ELF32_R_TYPE (irel->r_info);
6503 bfd_vma toff, roff;
6504 asection *tsec;
6505 struct one_fixup *f;
6506 size_t insn_offset = 0;
6507 bfd_vma max_branch_offset, val;
6508 bfd_byte *hit_addr;
6509 unsigned long t0;
6510 struct elf_link_hash_entry *h;
6511 struct plt_entry **plist;
6512 unsigned char sym_type;
6513
6514 switch (r_type)
6515 {
6516 case R_PPC_REL24:
6517 case R_PPC_LOCAL24PC:
6518 case R_PPC_PLTREL24:
6519 max_branch_offset = 1 << 25;
6520 break;
6521
6522 case R_PPC_REL14:
6523 case R_PPC_REL14_BRTAKEN:
6524 case R_PPC_REL14_BRNTAKEN:
6525 max_branch_offset = 1 << 15;
6526 break;
6527
6528 default:
6529 continue;
6530 }
6531
6532 /* Get the value of the symbol referred to by the reloc. */
6533 h = NULL;
6534 if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
6535 {
6536 /* A local symbol. */
6537 Elf_Internal_Sym *isym;
6538
6539 /* Read this BFD's local symbols. */
6540 if (isymbuf == NULL)
6541 {
6542 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
6543 if (isymbuf == NULL)
6544 isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
6545 symtab_hdr->sh_info, 0,
6546 NULL, NULL, NULL);
6547 if (isymbuf == 0)
6548 goto error_return;
6549 }
6550 isym = isymbuf + ELF32_R_SYM (irel->r_info);
6551 if (isym->st_shndx == SHN_UNDEF)
6552 tsec = bfd_und_section_ptr;
6553 else if (isym->st_shndx == SHN_ABS)
6554 tsec = bfd_abs_section_ptr;
6555 else if (isym->st_shndx == SHN_COMMON)
6556 tsec = bfd_com_section_ptr;
6557 else
6558 tsec = bfd_section_from_elf_index (abfd, isym->st_shndx);
6559
6560 toff = isym->st_value;
6561 sym_type = ELF_ST_TYPE (isym->st_info);
6562 }
6563 else
6564 {
6565 /* Global symbol handling. */
6566 unsigned long indx;
6567
6568 indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
6569 h = elf_sym_hashes (abfd)[indx];
6570
6571 while (h->root.type == bfd_link_hash_indirect
6572 || h->root.type == bfd_link_hash_warning)
6573 h = (struct elf_link_hash_entry *) h->root.u.i.link;
6574
6575 if (h->root.type == bfd_link_hash_defined
6576 || h->root.type == bfd_link_hash_defweak)
6577 {
6578 tsec = h->root.u.def.section;
6579 toff = h->root.u.def.value;
6580 }
6581 else if (h->root.type == bfd_link_hash_undefined
6582 || h->root.type == bfd_link_hash_undefweak)
6583 {
6584 tsec = bfd_und_section_ptr;
6585 toff = link_info->relocatable ? indx : 0;
6586 }
6587 else
6588 continue;
6589
6590 sym_type = h->type;
6591 }
6592
6593 /* The condition here under which we call find_plt_ent must
6594 match that in relocate_section. If we call find_plt_ent here
6595 but not in relocate_section, or vice versa, then the branch
6596 destination used here may be incorrect. */
6597 plist = NULL;
6598 if (h != NULL)
6599 {
6600 /* We know is_branch_reloc (r_type) is true. */
6601 if (h->type == STT_GNU_IFUNC
6602 || r_type == R_PPC_PLTREL24)
6603 plist = &h->plt.plist;
6604 }
6605 else if (sym_type == STT_GNU_IFUNC
6606 && elf_local_got_offsets (abfd) != NULL)
6607 {
6608 bfd_vma *local_got_offsets = elf_local_got_offsets (abfd);
6609 struct plt_entry **local_plt = (struct plt_entry **)
6610 (local_got_offsets + symtab_hdr->sh_info);
6611 plist = local_plt + ELF32_R_SYM (irel->r_info);
6612 }
6613 if (plist != NULL)
6614 {
6615 bfd_vma addend = 0;
6616 struct plt_entry *ent;
6617
6618 if (r_type == R_PPC_PLTREL24 && link_info->shared)
6619 addend = irel->r_addend;
6620 ent = find_plt_ent (plist, got2, addend);
6621 if (ent != NULL)
6622 {
6623 if (htab->plt_type == PLT_NEW
6624 || h == NULL
6625 || !htab->elf.dynamic_sections_created
6626 || h->dynindx == -1)
6627 {
6628 tsec = htab->glink;
6629 toff = ent->glink_offset;
6630 }
6631 else
6632 {
6633 tsec = htab->plt;
6634 toff = ent->plt.offset;
6635 }
6636 }
6637 }
6638
6639 /* If the branch and target are in the same section, you have
6640 no hope of adding stubs. We'll error out later should the
6641 branch overflow. */
6642 if (tsec == isec)
6643 continue;
6644
6645 /* There probably isn't any reason to handle symbols in
6646 SEC_MERGE sections; SEC_MERGE doesn't seem a likely
6647 attribute for a code section, and we are only looking at
6648 branches. However, implement it correctly here as a
6649 reference for other target relax_section functions. */
6650 if (0 && tsec->sec_info_type == SEC_INFO_TYPE_MERGE)
6651 {
6652 /* At this stage in linking, no SEC_MERGE symbol has been
6653 adjusted, so all references to such symbols need to be
6654 passed through _bfd_merged_section_offset. (Later, in
6655 relocate_section, all SEC_MERGE symbols *except* for
6656 section symbols have been adjusted.)
6657
6658 gas may reduce relocations against symbols in SEC_MERGE
6659 sections to a relocation against the section symbol when
6660 the original addend was zero. When the reloc is against
6661 a section symbol we should include the addend in the
6662 offset passed to _bfd_merged_section_offset, since the
6663 location of interest is the original symbol. On the
6664 other hand, an access to "sym+addend" where "sym" is not
6665 a section symbol should not include the addend; Such an
6666 access is presumed to be an offset from "sym"; The
6667 location of interest is just "sym". */
6668 if (sym_type == STT_SECTION)
6669 toff += irel->r_addend;
6670
6671 toff = _bfd_merged_section_offset (abfd, &tsec,
6672 elf_section_data (tsec)->sec_info,
6673 toff);
6674
6675 if (sym_type != STT_SECTION)
6676 toff += irel->r_addend;
6677 }
6678 /* PLTREL24 addends are special. */
6679 else if (r_type != R_PPC_PLTREL24)
6680 toff += irel->r_addend;
6681
6682 /* Attempted -shared link of non-pic code loses. */
6683 if (tsec->output_section == NULL)
6684 continue;
6685
6686 roff = irel->r_offset;
6687
6688 /* If the branch is in range, no need to do anything. */
6689 if (tsec != bfd_und_section_ptr
6690 && (!link_info->relocatable
6691 /* A relocatable link may have sections moved during
6692 final link, so do not presume they remain in range. */
6693 || tsec->output_section == isec->output_section))
6694 {
6695 bfd_vma symaddr, reladdr;
6696
6697 symaddr = tsec->output_section->vma + tsec->output_offset + toff;
6698 reladdr = isec->output_section->vma + isec->output_offset + roff;
6699 if (symaddr - reladdr + max_branch_offset < 2 * max_branch_offset)
6700 continue;
6701 }
6702
6703 /* Look for an existing fixup to this address. */
6704 for (f = fixups; f ; f = f->next)
6705 if (f->tsec == tsec && f->toff == toff)
6706 break;
6707
6708 if (f == NULL)
6709 {
6710 size_t size;
6711 unsigned long stub_rtype;
6712
6713 val = trampoff - roff;
6714 if (val >= max_branch_offset)
6715 /* Oh dear, we can't reach a trampoline. Don't try to add
6716 one. We'll report an error later. */
6717 continue;
6718
6719 if (link_info->shared)
6720 {
6721 size = 4 * ARRAY_SIZE (shared_stub_entry);
6722 insn_offset = 12;
6723 }
6724 else
6725 {
6726 size = 4 * ARRAY_SIZE (stub_entry);
6727 insn_offset = 0;
6728 }
6729 stub_rtype = R_PPC_RELAX;
6730 if (tsec == htab->plt
6731 || tsec == htab->glink)
6732 {
6733 stub_rtype = R_PPC_RELAX_PLT;
6734 if (r_type == R_PPC_PLTREL24)
6735 stub_rtype = R_PPC_RELAX_PLTREL24;
6736 }
6737
6738 /* Hijack the old relocation. Since we need two
6739 relocations for this use a "composite" reloc. */
6740 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
6741 stub_rtype);
6742 irel->r_offset = trampoff + insn_offset;
6743 if (r_type == R_PPC_PLTREL24
6744 && stub_rtype != R_PPC_RELAX_PLTREL24)
6745 irel->r_addend = 0;
6746
6747 /* Record the fixup so we don't do it again this section. */
6748 f = bfd_malloc (sizeof (*f));
6749 f->next = fixups;
6750 f->tsec = tsec;
6751 f->toff = toff;
6752 f->trampoff = trampoff;
6753 fixups = f;
6754
6755 trampoff += size;
6756 changes++;
6757 }
6758 else
6759 {
6760 val = f->trampoff - roff;
6761 if (val >= max_branch_offset)
6762 continue;
6763
6764 /* Nop out the reloc, since we're finalizing things here. */
6765 irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
6766 }
6767
6768 /* Get the section contents. */
6769 if (contents == NULL)
6770 {
6771 /* Get cached copy if it exists. */
6772 if (elf_section_data (isec)->this_hdr.contents != NULL)
6773 contents = elf_section_data (isec)->this_hdr.contents;
6774 else
6775 {
6776 /* Go get them off disk. */
6777 if (!bfd_malloc_and_get_section (abfd, isec, &contents))
6778 goto error_return;
6779 }
6780 }
6781
6782 /* Fix up the existing branch to hit the trampoline. */
6783 hit_addr = contents + roff;
6784 switch (r_type)
6785 {
6786 case R_PPC_REL24:
6787 case R_PPC_LOCAL24PC:
6788 case R_PPC_PLTREL24:
6789 t0 = bfd_get_32 (abfd, hit_addr);
6790 t0 &= ~0x3fffffc;
6791 t0 |= val & 0x3fffffc;
6792 bfd_put_32 (abfd, t0, hit_addr);
6793 break;
6794
6795 case R_PPC_REL14:
6796 case R_PPC_REL14_BRTAKEN:
6797 case R_PPC_REL14_BRNTAKEN:
6798 t0 = bfd_get_32 (abfd, hit_addr);
6799 t0 &= ~0xfffc;
6800 t0 |= val & 0xfffc;
6801 bfd_put_32 (abfd, t0, hit_addr);
6802 break;
6803 }
6804 }
6805
6806 /* Write out the trampolines. */
6807 if (fixups != NULL)
6808 {
6809 const int *stub;
6810 bfd_byte *dest;
6811 int i, size;
6812
6813 do
6814 {
6815 struct one_fixup *f = fixups;
6816 fixups = fixups->next;
6817 free (f);
6818 }
6819 while (fixups);
6820
6821 contents = bfd_realloc_or_free (contents, trampoff);
6822 if (contents == NULL)
6823 goto error_return;
6824
6825 isec->size = (isec->size + 3) & (bfd_vma) -4;
6826 dest = contents + isec->size;
6827 /* Branch around the trampolines. */
6828 if (maybe_pasted)
6829 {
6830 bfd_vma val = B + trampoff - isec->size;
6831 bfd_put_32 (abfd, val, dest);
6832 dest += 4;
6833 }
6834 isec->size = trampoff;
6835
6836 if (link_info->shared)
6837 {
6838 stub = shared_stub_entry;
6839 size = ARRAY_SIZE (shared_stub_entry);
6840 }
6841 else
6842 {
6843 stub = stub_entry;
6844 size = ARRAY_SIZE (stub_entry);
6845 }
6846
6847 i = 0;
6848 while (dest < contents + trampoff)
6849 {
6850 bfd_put_32 (abfd, stub[i], dest);
6851 i++;
6852 if (i == size)
6853 i = 0;
6854 dest += 4;
6855 }
6856 BFD_ASSERT (i == 0);
6857 }
6858
6859 if (isymbuf != NULL
6860 && symtab_hdr->contents != (unsigned char *) isymbuf)
6861 {
6862 if (! link_info->keep_memory)
6863 free (isymbuf);
6864 else
6865 {
6866 /* Cache the symbols for elf_link_input_bfd. */
6867 symtab_hdr->contents = (unsigned char *) isymbuf;
6868 }
6869 }
6870
6871 if (contents != NULL
6872 && elf_section_data (isec)->this_hdr.contents != contents)
6873 {
6874 if (!changes && !link_info->keep_memory)
6875 free (contents);
6876 else
6877 {
6878 /* Cache the section contents for elf_link_input_bfd. */
6879 elf_section_data (isec)->this_hdr.contents = contents;
6880 }
6881 }
6882
6883 if (changes != 0)
6884 {
6885 /* Append sufficient NOP relocs so we can write out relocation
6886 information for the trampolines. */
6887 Elf_Internal_Shdr *rel_hdr;
6888 Elf_Internal_Rela *new_relocs = bfd_malloc ((changes + isec->reloc_count)
6889 * sizeof (*new_relocs));
6890 unsigned ix;
6891
6892 if (!new_relocs)
6893 goto error_return;
6894 memcpy (new_relocs, internal_relocs,
6895 isec->reloc_count * sizeof (*new_relocs));
6896 for (ix = changes; ix--;)
6897 {
6898 irel = new_relocs + ix + isec->reloc_count;
6899
6900 irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
6901 }
6902 if (internal_relocs != elf_section_data (isec)->relocs)
6903 free (internal_relocs);
6904 elf_section_data (isec)->relocs = new_relocs;
6905 isec->reloc_count += changes;
6906 rel_hdr = _bfd_elf_single_rel_hdr (isec);
6907 rel_hdr->sh_size += changes * rel_hdr->sh_entsize;
6908 }
6909 else if (elf_section_data (isec)->relocs != internal_relocs)
6910 free (internal_relocs);
6911
6912 *again = changes != 0;
6913 if (!*again && link_info->relocatable)
6914 {
6915 /* Convert the internal relax relocs to external form. */
6916 for (irel = internal_relocs; irel < irelend; irel++)
6917 if (ELF32_R_TYPE (irel->r_info) == R_PPC_RELAX)
6918 {
6919 unsigned long r_symndx = ELF32_R_SYM (irel->r_info);
6920
6921 /* Rewrite the reloc and convert one of the trailing nop
6922 relocs to describe this relocation. */
6923 BFD_ASSERT (ELF32_R_TYPE (irelend[-1].r_info) == R_PPC_NONE);
6924 /* The relocs are at the bottom 2 bytes */
6925 irel[0].r_offset += 2;
6926 memmove (irel + 1, irel, (irelend - irel - 1) * sizeof (*irel));
6927 irel[0].r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_HA);
6928 irel[1].r_offset += 4;
6929 irel[1].r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_LO);
6930 irel++;
6931 }
6932 }
6933
6934 return TRUE;
6935
6936 error_return:
6937 if (isymbuf != NULL && (unsigned char *) isymbuf != symtab_hdr->contents)
6938 free (isymbuf);
6939 if (contents != NULL
6940 && elf_section_data (isec)->this_hdr.contents != contents)
6941 free (contents);
6942 if (internal_relocs != NULL
6943 && elf_section_data (isec)->relocs != internal_relocs)
6944 free (internal_relocs);
6945 return FALSE;
6946 }
6947 \f
6948 /* What to do when ld finds relocations against symbols defined in
6949 discarded sections. */
6950
6951 static unsigned int
6952 ppc_elf_action_discarded (asection *sec)
6953 {
6954 if (strcmp (".fixup", sec->name) == 0)
6955 return 0;
6956
6957 if (strcmp (".got2", sec->name) == 0)
6958 return 0;
6959
6960 return _bfd_elf_default_action_discarded (sec);
6961 }
6962 \f
6963 /* Fill in the address for a pointer generated in a linker section. */
6964
6965 static bfd_vma
6966 elf_finish_pointer_linker_section (bfd *input_bfd,
6967 elf_linker_section_t *lsect,
6968 struct elf_link_hash_entry *h,
6969 bfd_vma relocation,
6970 const Elf_Internal_Rela *rel)
6971 {
6972 elf_linker_section_pointers_t *linker_section_ptr;
6973
6974 BFD_ASSERT (lsect != NULL);
6975
6976 if (h != NULL)
6977 {
6978 /* Handle global symbol. */
6979 struct ppc_elf_link_hash_entry *eh;
6980
6981 eh = (struct ppc_elf_link_hash_entry *) h;
6982 BFD_ASSERT (eh->elf.def_regular);
6983 linker_section_ptr = eh->linker_section_pointer;
6984 }
6985 else
6986 {
6987 /* Handle local symbol. */
6988 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
6989
6990 BFD_ASSERT (is_ppc_elf (input_bfd));
6991 BFD_ASSERT (elf_local_ptr_offsets (input_bfd) != NULL);
6992 linker_section_ptr = elf_local_ptr_offsets (input_bfd)[r_symndx];
6993 }
6994
6995 linker_section_ptr = elf_find_pointer_linker_section (linker_section_ptr,
6996 rel->r_addend,
6997 lsect);
6998 BFD_ASSERT (linker_section_ptr != NULL);
6999
7000 /* Offset will always be a multiple of four, so use the bottom bit
7001 as a "written" flag. */
7002 if ((linker_section_ptr->offset & 1) == 0)
7003 {
7004 bfd_put_32 (lsect->section->owner,
7005 relocation + linker_section_ptr->addend,
7006 lsect->section->contents + linker_section_ptr->offset);
7007 linker_section_ptr->offset += 1;
7008 }
7009
7010 relocation = (lsect->section->output_section->vma
7011 + lsect->section->output_offset
7012 + linker_section_ptr->offset - 1
7013 - SYM_VAL (lsect->sym));
7014
7015 #ifdef DEBUG
7016 fprintf (stderr,
7017 "Finish pointer in linker section %s, offset = %ld (0x%lx)\n",
7018 lsect->name, (long) relocation, (long) relocation);
7019 #endif
7020
7021 return relocation;
7022 }
7023
7024 #define PPC_LO(v) ((v) & 0xffff)
7025 #define PPC_HI(v) (((v) >> 16) & 0xffff)
7026 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
7027
7028 static void
7029 write_glink_stub (struct plt_entry *ent, asection *plt_sec, unsigned char *p,
7030 struct bfd_link_info *info)
7031 {
7032 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
7033 bfd *output_bfd = info->output_bfd;
7034 bfd_vma plt;
7035
7036 plt = ((ent->plt.offset & ~1)
7037 + plt_sec->output_section->vma
7038 + plt_sec->output_offset);
7039
7040 if (info->shared)
7041 {
7042 bfd_vma got = 0;
7043
7044 if (ent->addend >= 32768)
7045 got = (ent->addend
7046 + ent->sec->output_section->vma
7047 + ent->sec->output_offset);
7048 else if (htab->elf.hgot != NULL)
7049 got = SYM_VAL (htab->elf.hgot);
7050
7051 plt -= got;
7052
7053 if (plt + 0x8000 < 0x10000)
7054 {
7055 bfd_put_32 (output_bfd, LWZ_11_30 + PPC_LO (plt), p);
7056 p += 4;
7057 bfd_put_32 (output_bfd, MTCTR_11, p);
7058 p += 4;
7059 bfd_put_32 (output_bfd, BCTR, p);
7060 p += 4;
7061 bfd_put_32 (output_bfd, NOP, p);
7062 p += 4;
7063 }
7064 else
7065 {
7066 bfd_put_32 (output_bfd, ADDIS_11_30 + PPC_HA (plt), p);
7067 p += 4;
7068 bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
7069 p += 4;
7070 bfd_put_32 (output_bfd, MTCTR_11, p);
7071 p += 4;
7072 bfd_put_32 (output_bfd, BCTR, p);
7073 p += 4;
7074 }
7075 }
7076 else
7077 {
7078 bfd_put_32 (output_bfd, LIS_11 + PPC_HA (plt), p);
7079 p += 4;
7080 bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
7081 p += 4;
7082 bfd_put_32 (output_bfd, MTCTR_11, p);
7083 p += 4;
7084 bfd_put_32 (output_bfd, BCTR, p);
7085 p += 4;
7086 }
7087 }
7088
7089 /* Return true if symbol is defined statically. */
7090
7091 static bfd_boolean
7092 is_static_defined (struct elf_link_hash_entry *h)
7093 {
7094 return ((h->root.type == bfd_link_hash_defined
7095 || h->root.type == bfd_link_hash_defweak)
7096 && h->root.u.def.section != NULL
7097 && h->root.u.def.section->output_section != NULL);
7098 }
7099
7100 /* If INSN is an opcode that may be used with an @tls operand, return
7101 the transformed insn for TLS optimisation, otherwise return 0. If
7102 REG is non-zero only match an insn with RB or RA equal to REG. */
7103
7104 unsigned int
7105 _bfd_elf_ppc_at_tls_transform (unsigned int insn, unsigned int reg)
7106 {
7107 unsigned int rtra;
7108
7109 if ((insn & (0x3f << 26)) != 31 << 26)
7110 return 0;
7111
7112 if (reg == 0 || ((insn >> 11) & 0x1f) == reg)
7113 rtra = insn & ((1 << 26) - (1 << 16));
7114 else if (((insn >> 16) & 0x1f) == reg)
7115 rtra = (insn & (0x1f << 21)) | ((insn & (0x1f << 11)) << 5);
7116 else
7117 return 0;
7118
7119 if ((insn & (0x3ff << 1)) == 266 << 1)
7120 /* add -> addi. */
7121 insn = 14 << 26;
7122 else if ((insn & (0x1f << 1)) == 23 << 1
7123 && ((insn & (0x1f << 6)) < 14 << 6
7124 || ((insn & (0x1f << 6)) >= 16 << 6
7125 && (insn & (0x1f << 6)) < 24 << 6)))
7126 /* load and store indexed -> dform. */
7127 insn = (32 | ((insn >> 6) & 0x1f)) << 26;
7128 else if ((insn & (((0x1a << 5) | 0x1f) << 1)) == 21 << 1)
7129 /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
7130 insn = ((58 | ((insn >> 6) & 4)) << 26) | ((insn >> 6) & 1);
7131 else if ((insn & (((0x1f << 5) | 0x1f) << 1)) == 341 << 1)
7132 /* lwax -> lwa. */
7133 insn = (58 << 26) | 2;
7134 else
7135 return 0;
7136 insn |= rtra;
7137 return insn;
7138 }
7139
7140 /* If INSN is an opcode that may be used with an @tprel operand, return
7141 the transformed insn for an undefined weak symbol, ie. with the
7142 thread pointer REG operand removed. Otherwise return 0. */
7143
7144 unsigned int
7145 _bfd_elf_ppc_at_tprel_transform (unsigned int insn, unsigned int reg)
7146 {
7147 if ((insn & (0x1f << 16)) == reg << 16
7148 && ((insn & (0x3f << 26)) == 14u << 26 /* addi */
7149 || (insn & (0x3f << 26)) == 15u << 26 /* addis */
7150 || (insn & (0x3f << 26)) == 32u << 26 /* lwz */
7151 || (insn & (0x3f << 26)) == 34u << 26 /* lbz */
7152 || (insn & (0x3f << 26)) == 36u << 26 /* stw */
7153 || (insn & (0x3f << 26)) == 38u << 26 /* stb */
7154 || (insn & (0x3f << 26)) == 40u << 26 /* lhz */
7155 || (insn & (0x3f << 26)) == 42u << 26 /* lha */
7156 || (insn & (0x3f << 26)) == 44u << 26 /* sth */
7157 || (insn & (0x3f << 26)) == 46u << 26 /* lmw */
7158 || (insn & (0x3f << 26)) == 47u << 26 /* stmw */
7159 || (insn & (0x3f << 26)) == 48u << 26 /* lfs */
7160 || (insn & (0x3f << 26)) == 50u << 26 /* lfd */
7161 || (insn & (0x3f << 26)) == 52u << 26 /* stfs */
7162 || (insn & (0x3f << 26)) == 54u << 26 /* stfd */
7163 || ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
7164 && (insn & 3) != 1)
7165 || ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */
7166 && ((insn & 3) == 0 || (insn & 3) == 3))))
7167 {
7168 insn &= ~(0x1f << 16);
7169 }
7170 else if ((insn & (0x1f << 21)) == reg << 21
7171 && ((insn & (0x3e << 26)) == 24u << 26 /* ori, oris */
7172 || (insn & (0x3e << 26)) == 26u << 26 /* xori,xoris */
7173 || (insn & (0x3e << 26)) == 28u << 26 /* andi,andis */))
7174 {
7175 insn &= ~(0x1f << 21);
7176 insn |= (insn & (0x1f << 16)) << 5;
7177 if ((insn & (0x3e << 26)) == 26 << 26 /* xori,xoris */)
7178 insn -= 2 >> 26; /* convert to ori,oris */
7179 }
7180 else
7181 insn = 0;
7182 return insn;
7183 }
7184
7185 /* The RELOCATE_SECTION function is called by the ELF backend linker
7186 to handle the relocations for a section.
7187
7188 The relocs are always passed as Rela structures; if the section
7189 actually uses Rel structures, the r_addend field will always be
7190 zero.
7191
7192 This function is responsible for adjust the section contents as
7193 necessary, and (if using Rela relocs and generating a
7194 relocatable output file) adjusting the reloc addend as
7195 necessary.
7196
7197 This function does not have to worry about setting the reloc
7198 address or the reloc symbol index.
7199
7200 LOCAL_SYMS is a pointer to the swapped in local symbols.
7201
7202 LOCAL_SECTIONS is an array giving the section in the input file
7203 corresponding to the st_shndx field of each local symbol.
7204
7205 The global hash table entry for the global symbols can be found
7206 via elf_sym_hashes (input_bfd).
7207
7208 When generating relocatable output, this function must handle
7209 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
7210 going to be the section symbol corresponding to the output
7211 section, which means that the addend must be adjusted
7212 accordingly. */
7213
7214 static bfd_boolean
7215 ppc_elf_relocate_section (bfd *output_bfd,
7216 struct bfd_link_info *info,
7217 bfd *input_bfd,
7218 asection *input_section,
7219 bfd_byte *contents,
7220 Elf_Internal_Rela *relocs,
7221 Elf_Internal_Sym *local_syms,
7222 asection **local_sections)
7223 {
7224 Elf_Internal_Shdr *symtab_hdr;
7225 struct elf_link_hash_entry **sym_hashes;
7226 struct ppc_elf_link_hash_table *htab;
7227 Elf_Internal_Rela *rel;
7228 Elf_Internal_Rela *relend;
7229 Elf_Internal_Rela outrel;
7230 asection *got2, *sreloc = NULL;
7231 bfd_vma *local_got_offsets;
7232 bfd_boolean ret = TRUE;
7233 bfd_vma d_offset = (bfd_big_endian (output_bfd) ? 2 : 0);
7234 bfd_boolean is_vxworks_tls;
7235
7236 #ifdef DEBUG
7237 _bfd_error_handler ("ppc_elf_relocate_section called for %B section %A, "
7238 "%ld relocations%s",
7239 input_bfd, input_section,
7240 (long) input_section->reloc_count,
7241 (info->relocatable) ? " (relocatable)" : "");
7242 #endif
7243
7244 got2 = bfd_get_section_by_name (input_bfd, ".got2");
7245
7246 /* Initialize howto table if not already done. */
7247 if (!ppc_elf_howto_table[R_PPC_ADDR32])
7248 ppc_elf_howto_init ();
7249
7250 htab = ppc_elf_hash_table (info);
7251 local_got_offsets = elf_local_got_offsets (input_bfd);
7252 symtab_hdr = &elf_symtab_hdr (input_bfd);
7253 sym_hashes = elf_sym_hashes (input_bfd);
7254 /* We have to handle relocations in vxworks .tls_vars sections
7255 specially, because the dynamic loader is 'weird'. */
7256 is_vxworks_tls = (htab->is_vxworks && info->shared
7257 && !strcmp (input_section->output_section->name,
7258 ".tls_vars"));
7259 rel = relocs;
7260 relend = relocs + input_section->reloc_count;
7261 for (; rel < relend; rel++)
7262 {
7263 enum elf_ppc_reloc_type r_type;
7264 bfd_vma addend;
7265 bfd_reloc_status_type r;
7266 Elf_Internal_Sym *sym;
7267 asection *sec;
7268 struct elf_link_hash_entry *h;
7269 const char *sym_name;
7270 reloc_howto_type *howto;
7271 unsigned long r_symndx;
7272 bfd_vma relocation;
7273 bfd_vma branch_bit, from;
7274 bfd_boolean unresolved_reloc;
7275 bfd_boolean warned;
7276 unsigned int tls_type, tls_mask, tls_gd;
7277 struct plt_entry **ifunc;
7278
7279 r_type = ELF32_R_TYPE (rel->r_info);
7280 sym = NULL;
7281 sec = NULL;
7282 h = NULL;
7283 unresolved_reloc = FALSE;
7284 warned = FALSE;
7285 r_symndx = ELF32_R_SYM (rel->r_info);
7286
7287 if (r_symndx < symtab_hdr->sh_info)
7288 {
7289 sym = local_syms + r_symndx;
7290 sec = local_sections[r_symndx];
7291 sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
7292
7293 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
7294 }
7295 else
7296 {
7297 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
7298 r_symndx, symtab_hdr, sym_hashes,
7299 h, sec, relocation,
7300 unresolved_reloc, warned);
7301
7302 sym_name = h->root.root.string;
7303 }
7304
7305 if (sec != NULL && discarded_section (sec))
7306 {
7307 /* For relocs against symbols from removed linkonce sections,
7308 or sections discarded by a linker script, we just want the
7309 section contents zeroed. Avoid any special processing. */
7310 howto = NULL;
7311 if (r_type < R_PPC_max)
7312 howto = ppc_elf_howto_table[r_type];
7313 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
7314 rel, 1, relend, howto, 0, contents);
7315 }
7316
7317 if (info->relocatable)
7318 {
7319 if (got2 != NULL
7320 && r_type == R_PPC_PLTREL24
7321 && rel->r_addend >= 32768)
7322 {
7323 /* R_PPC_PLTREL24 is rather special. If non-zero, the
7324 addend specifies the GOT pointer offset within .got2. */
7325 rel->r_addend += got2->output_offset;
7326 }
7327 continue;
7328 }
7329
7330 /* TLS optimizations. Replace instruction sequences and relocs
7331 based on information we collected in tls_optimize. We edit
7332 RELOCS so that --emit-relocs will output something sensible
7333 for the final instruction stream. */
7334 tls_mask = 0;
7335 tls_gd = 0;
7336 if (h != NULL)
7337 tls_mask = ((struct ppc_elf_link_hash_entry *) h)->tls_mask;
7338 else if (local_got_offsets != NULL)
7339 {
7340 struct plt_entry **local_plt;
7341 char *lgot_masks;
7342 local_plt
7343 = (struct plt_entry **) (local_got_offsets + symtab_hdr->sh_info);
7344 lgot_masks = (char *) (local_plt + symtab_hdr->sh_info);
7345 tls_mask = lgot_masks[r_symndx];
7346 }
7347
7348 /* Ensure reloc mapping code below stays sane. */
7349 if ((R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TLSGD16 & 3)
7350 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TLSGD16_LO & 3)
7351 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TLSGD16_HI & 3)
7352 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TLSGD16_HA & 3)
7353 || (R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TPREL16 & 3)
7354 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TPREL16_LO & 3)
7355 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TPREL16_HI & 3)
7356 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TPREL16_HA & 3))
7357 abort ();
7358 switch (r_type)
7359 {
7360 default:
7361 break;
7362
7363 case R_PPC_GOT_TPREL16:
7364 case R_PPC_GOT_TPREL16_LO:
7365 if ((tls_mask & TLS_TLS) != 0
7366 && (tls_mask & TLS_TPREL) == 0)
7367 {
7368 bfd_vma insn;
7369
7370 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset);
7371 insn &= 31 << 21;
7372 insn |= 0x3c020000; /* addis 0,2,0 */
7373 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset);
7374 r_type = R_PPC_TPREL16_HA;
7375 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7376 }
7377 break;
7378
7379 case R_PPC_TLS:
7380 if ((tls_mask & TLS_TLS) != 0
7381 && (tls_mask & TLS_TPREL) == 0)
7382 {
7383 bfd_vma insn;
7384
7385 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
7386 insn = _bfd_elf_ppc_at_tls_transform (insn, 2);
7387 if (insn == 0)
7388 abort ();
7389 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
7390 r_type = R_PPC_TPREL16_LO;
7391 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7392
7393 /* Was PPC_TLS which sits on insn boundary, now
7394 PPC_TPREL16_LO which is at low-order half-word. */
7395 rel->r_offset += d_offset;
7396 }
7397 break;
7398
7399 case R_PPC_GOT_TLSGD16_HI:
7400 case R_PPC_GOT_TLSGD16_HA:
7401 tls_gd = TLS_TPRELGD;
7402 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
7403 goto tls_gdld_hi;
7404 break;
7405
7406 case R_PPC_GOT_TLSLD16_HI:
7407 case R_PPC_GOT_TLSLD16_HA:
7408 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
7409 {
7410 tls_gdld_hi:
7411 if ((tls_mask & tls_gd) != 0)
7412 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
7413 + R_PPC_GOT_TPREL16);
7414 else
7415 {
7416 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
7417 rel->r_offset -= d_offset;
7418 r_type = R_PPC_NONE;
7419 }
7420 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7421 }
7422 break;
7423
7424 case R_PPC_GOT_TLSGD16:
7425 case R_PPC_GOT_TLSGD16_LO:
7426 tls_gd = TLS_TPRELGD;
7427 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
7428 goto tls_ldgd_opt;
7429 break;
7430
7431 case R_PPC_GOT_TLSLD16:
7432 case R_PPC_GOT_TLSLD16_LO:
7433 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
7434 {
7435 unsigned int insn1, insn2;
7436 bfd_vma offset;
7437
7438 tls_ldgd_opt:
7439 offset = (bfd_vma) -1;
7440 /* If not using the newer R_PPC_TLSGD/LD to mark
7441 __tls_get_addr calls, we must trust that the call
7442 stays with its arg setup insns, ie. that the next
7443 reloc is the __tls_get_addr call associated with
7444 the current reloc. Edit both insns. */
7445 if (input_section->has_tls_get_addr_call
7446 && rel + 1 < relend
7447 && branch_reloc_hash_match (input_bfd, rel + 1,
7448 htab->tls_get_addr))
7449 offset = rel[1].r_offset;
7450 if ((tls_mask & tls_gd) != 0)
7451 {
7452 /* IE */
7453 insn1 = bfd_get_32 (output_bfd,
7454 contents + rel->r_offset - d_offset);
7455 insn1 &= (1 << 26) - 1;
7456 insn1 |= 32 << 26; /* lwz */
7457 if (offset != (bfd_vma) -1)
7458 {
7459 rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
7460 insn2 = 0x7c631214; /* add 3,3,2 */
7461 bfd_put_32 (output_bfd, insn2, contents + offset);
7462 }
7463 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
7464 + R_PPC_GOT_TPREL16);
7465 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7466 }
7467 else
7468 {
7469 /* LE */
7470 insn1 = 0x3c620000; /* addis 3,2,0 */
7471 if (tls_gd == 0)
7472 {
7473 /* Was an LD reloc. */
7474 for (r_symndx = 0;
7475 r_symndx < symtab_hdr->sh_info;
7476 r_symndx++)
7477 if (local_sections[r_symndx] == sec)
7478 break;
7479 if (r_symndx >= symtab_hdr->sh_info)
7480 r_symndx = STN_UNDEF;
7481 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
7482 if (r_symndx != STN_UNDEF)
7483 rel->r_addend -= (local_syms[r_symndx].st_value
7484 + sec->output_offset
7485 + sec->output_section->vma);
7486 }
7487 r_type = R_PPC_TPREL16_HA;
7488 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7489 if (offset != (bfd_vma) -1)
7490 {
7491 rel[1].r_info = ELF32_R_INFO (r_symndx, R_PPC_TPREL16_LO);
7492 rel[1].r_offset = offset + d_offset;
7493 rel[1].r_addend = rel->r_addend;
7494 insn2 = 0x38630000; /* addi 3,3,0 */
7495 bfd_put_32 (output_bfd, insn2, contents + offset);
7496 }
7497 }
7498 bfd_put_32 (output_bfd, insn1,
7499 contents + rel->r_offset - d_offset);
7500 if (tls_gd == 0)
7501 {
7502 /* We changed the symbol on an LD reloc. Start over
7503 in order to get h, sym, sec etc. right. */
7504 rel--;
7505 continue;
7506 }
7507 }
7508 break;
7509
7510 case R_PPC_TLSGD:
7511 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
7512 {
7513 unsigned int insn2;
7514 bfd_vma offset = rel->r_offset;
7515
7516 if ((tls_mask & TLS_TPRELGD) != 0)
7517 {
7518 /* IE */
7519 r_type = R_PPC_NONE;
7520 insn2 = 0x7c631214; /* add 3,3,2 */
7521 }
7522 else
7523 {
7524 /* LE */
7525 r_type = R_PPC_TPREL16_LO;
7526 rel->r_offset += d_offset;
7527 insn2 = 0x38630000; /* addi 3,3,0 */
7528 }
7529 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7530 bfd_put_32 (output_bfd, insn2, contents + offset);
7531 /* Zap the reloc on the _tls_get_addr call too. */
7532 BFD_ASSERT (offset == rel[1].r_offset);
7533 rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
7534 }
7535 break;
7536
7537 case R_PPC_TLSLD:
7538 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
7539 {
7540 unsigned int insn2;
7541
7542 for (r_symndx = 0;
7543 r_symndx < symtab_hdr->sh_info;
7544 r_symndx++)
7545 if (local_sections[r_symndx] == sec)
7546 break;
7547 if (r_symndx >= symtab_hdr->sh_info)
7548 r_symndx = STN_UNDEF;
7549 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
7550 if (r_symndx != STN_UNDEF)
7551 rel->r_addend -= (local_syms[r_symndx].st_value
7552 + sec->output_offset
7553 + sec->output_section->vma);
7554
7555 rel->r_info = ELF32_R_INFO (r_symndx, R_PPC_TPREL16_LO);
7556 rel->r_offset += d_offset;
7557 insn2 = 0x38630000; /* addi 3,3,0 */
7558 bfd_put_32 (output_bfd, insn2,
7559 contents + rel->r_offset - d_offset);
7560 /* Zap the reloc on the _tls_get_addr call too. */
7561 BFD_ASSERT (rel->r_offset - d_offset == rel[1].r_offset);
7562 rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
7563 rel--;
7564 continue;
7565 }
7566 break;
7567 }
7568
7569 /* Handle other relocations that tweak non-addend part of insn. */
7570 branch_bit = 0;
7571 switch (r_type)
7572 {
7573 default:
7574 break;
7575
7576 /* Branch taken prediction relocations. */
7577 case R_PPC_ADDR14_BRTAKEN:
7578 case R_PPC_REL14_BRTAKEN:
7579 branch_bit = BRANCH_PREDICT_BIT;
7580 /* Fall thru */
7581
7582 /* Branch not taken prediction relocations. */
7583 case R_PPC_ADDR14_BRNTAKEN:
7584 case R_PPC_REL14_BRNTAKEN:
7585 {
7586 bfd_vma insn;
7587
7588 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
7589 insn &= ~BRANCH_PREDICT_BIT;
7590 insn |= branch_bit;
7591
7592 from = (rel->r_offset
7593 + input_section->output_offset
7594 + input_section->output_section->vma);
7595
7596 /* Invert 'y' bit if not the default. */
7597 if ((bfd_signed_vma) (relocation + rel->r_addend - from) < 0)
7598 insn ^= BRANCH_PREDICT_BIT;
7599
7600 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
7601 break;
7602 }
7603 }
7604
7605 ifunc = NULL;
7606 if (!htab->is_vxworks)
7607 {
7608 struct plt_entry *ent;
7609
7610 if (h != NULL)
7611 {
7612 if (h->type == STT_GNU_IFUNC)
7613 ifunc = &h->plt.plist;
7614 }
7615 else if (local_got_offsets != NULL
7616 && ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
7617 {
7618 struct plt_entry **local_plt;
7619
7620 local_plt = (struct plt_entry **) (local_got_offsets
7621 + symtab_hdr->sh_info);
7622 ifunc = local_plt + r_symndx;
7623 }
7624
7625 ent = NULL;
7626 if (ifunc != NULL
7627 && (!info->shared
7628 || is_branch_reloc (r_type)))
7629 {
7630 addend = 0;
7631 if (r_type == R_PPC_PLTREL24 && info->shared)
7632 addend = rel->r_addend;
7633 ent = find_plt_ent (ifunc, got2, addend);
7634 }
7635 if (ent != NULL)
7636 {
7637 if (h == NULL && (ent->plt.offset & 1) == 0)
7638 {
7639 Elf_Internal_Rela rela;
7640 bfd_byte *loc;
7641
7642 rela.r_offset = (htab->iplt->output_section->vma
7643 + htab->iplt->output_offset
7644 + ent->plt.offset);
7645 rela.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
7646 rela.r_addend = relocation;
7647 loc = htab->reliplt->contents;
7648 loc += (htab->reliplt->reloc_count++
7649 * sizeof (Elf32_External_Rela));
7650 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
7651
7652 ent->plt.offset |= 1;
7653 }
7654 if (h == NULL && (ent->glink_offset & 1) == 0)
7655 {
7656 unsigned char *p = ((unsigned char *) htab->glink->contents
7657 + ent->glink_offset);
7658 write_glink_stub (ent, htab->iplt, p, info);
7659 ent->glink_offset |= 1;
7660 }
7661
7662 unresolved_reloc = FALSE;
7663 if (htab->plt_type == PLT_NEW
7664 || !htab->elf.dynamic_sections_created
7665 || h == NULL)
7666 relocation = (htab->glink->output_section->vma
7667 + htab->glink->output_offset
7668 + (ent->glink_offset & ~1));
7669 else
7670 relocation = (htab->plt->output_section->vma
7671 + htab->plt->output_offset
7672 + ent->plt.offset);
7673 }
7674 }
7675
7676 addend = rel->r_addend;
7677 tls_type = 0;
7678 howto = NULL;
7679 if (r_type < R_PPC_max)
7680 howto = ppc_elf_howto_table[r_type];
7681 switch (r_type)
7682 {
7683 default:
7684 info->callbacks->einfo
7685 (_("%P: %B: unknown relocation type %d for symbol %s\n"),
7686 input_bfd, (int) r_type, sym_name);
7687
7688 bfd_set_error (bfd_error_bad_value);
7689 ret = FALSE;
7690 continue;
7691
7692 case R_PPC_NONE:
7693 case R_PPC_TLS:
7694 case R_PPC_TLSGD:
7695 case R_PPC_TLSLD:
7696 case R_PPC_EMB_MRKREF:
7697 case R_PPC_GNU_VTINHERIT:
7698 case R_PPC_GNU_VTENTRY:
7699 continue;
7700
7701 /* GOT16 relocations. Like an ADDR16 using the symbol's
7702 address in the GOT as relocation value instead of the
7703 symbol's value itself. Also, create a GOT entry for the
7704 symbol and put the symbol value there. */
7705 case R_PPC_GOT_TLSGD16:
7706 case R_PPC_GOT_TLSGD16_LO:
7707 case R_PPC_GOT_TLSGD16_HI:
7708 case R_PPC_GOT_TLSGD16_HA:
7709 tls_type = TLS_TLS | TLS_GD;
7710 goto dogot;
7711
7712 case R_PPC_GOT_TLSLD16:
7713 case R_PPC_GOT_TLSLD16_LO:
7714 case R_PPC_GOT_TLSLD16_HI:
7715 case R_PPC_GOT_TLSLD16_HA:
7716 tls_type = TLS_TLS | TLS_LD;
7717 goto dogot;
7718
7719 case R_PPC_GOT_TPREL16:
7720 case R_PPC_GOT_TPREL16_LO:
7721 case R_PPC_GOT_TPREL16_HI:
7722 case R_PPC_GOT_TPREL16_HA:
7723 tls_type = TLS_TLS | TLS_TPREL;
7724 goto dogot;
7725
7726 case R_PPC_GOT_DTPREL16:
7727 case R_PPC_GOT_DTPREL16_LO:
7728 case R_PPC_GOT_DTPREL16_HI:
7729 case R_PPC_GOT_DTPREL16_HA:
7730 tls_type = TLS_TLS | TLS_DTPREL;
7731 goto dogot;
7732
7733 case R_PPC_GOT16:
7734 case R_PPC_GOT16_LO:
7735 case R_PPC_GOT16_HI:
7736 case R_PPC_GOT16_HA:
7737 tls_mask = 0;
7738 dogot:
7739 {
7740 /* Relocation is to the entry for this symbol in the global
7741 offset table. */
7742 bfd_vma off;
7743 bfd_vma *offp;
7744 unsigned long indx;
7745
7746 if (htab->got == NULL)
7747 abort ();
7748
7749 indx = 0;
7750 if (tls_type == (TLS_TLS | TLS_LD)
7751 && (h == NULL
7752 || !h->def_dynamic))
7753 offp = &htab->tlsld_got.offset;
7754 else if (h != NULL)
7755 {
7756 bfd_boolean dyn;
7757 dyn = htab->elf.dynamic_sections_created;
7758 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
7759 || (info->shared
7760 && SYMBOL_REFERENCES_LOCAL (info, h)))
7761 /* This is actually a static link, or it is a
7762 -Bsymbolic link and the symbol is defined
7763 locally, or the symbol was forced to be local
7764 because of a version file. */
7765 ;
7766 else
7767 {
7768 indx = h->dynindx;
7769 unresolved_reloc = FALSE;
7770 }
7771 offp = &h->got.offset;
7772 }
7773 else
7774 {
7775 if (local_got_offsets == NULL)
7776 abort ();
7777 offp = &local_got_offsets[r_symndx];
7778 }
7779
7780 /* The offset must always be a multiple of 4. We use the
7781 least significant bit to record whether we have already
7782 processed this entry. */
7783 off = *offp;
7784 if ((off & 1) != 0)
7785 off &= ~1;
7786 else
7787 {
7788 unsigned int tls_m = (tls_mask
7789 & (TLS_LD | TLS_GD | TLS_DTPREL
7790 | TLS_TPREL | TLS_TPRELGD));
7791
7792 if (offp == &htab->tlsld_got.offset)
7793 tls_m = TLS_LD;
7794 else if (h == NULL
7795 || !h->def_dynamic)
7796 tls_m &= ~TLS_LD;
7797
7798 /* We might have multiple got entries for this sym.
7799 Initialize them all. */
7800 do
7801 {
7802 int tls_ty = 0;
7803
7804 if ((tls_m & TLS_LD) != 0)
7805 {
7806 tls_ty = TLS_TLS | TLS_LD;
7807 tls_m &= ~TLS_LD;
7808 }
7809 else if ((tls_m & TLS_GD) != 0)
7810 {
7811 tls_ty = TLS_TLS | TLS_GD;
7812 tls_m &= ~TLS_GD;
7813 }
7814 else if ((tls_m & TLS_DTPREL) != 0)
7815 {
7816 tls_ty = TLS_TLS | TLS_DTPREL;
7817 tls_m &= ~TLS_DTPREL;
7818 }
7819 else if ((tls_m & (TLS_TPREL | TLS_TPRELGD)) != 0)
7820 {
7821 tls_ty = TLS_TLS | TLS_TPREL;
7822 tls_m = 0;
7823 }
7824
7825 /* Generate relocs for the dynamic linker. */
7826 if ((info->shared || indx != 0)
7827 && (offp == &htab->tlsld_got.offset
7828 || h == NULL
7829 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
7830 || h->root.type != bfd_link_hash_undefweak))
7831 {
7832 asection *rsec = htab->relgot;
7833 bfd_byte * loc;
7834
7835 outrel.r_offset = (htab->got->output_section->vma
7836 + htab->got->output_offset
7837 + off);
7838 outrel.r_addend = 0;
7839 if (tls_ty & (TLS_LD | TLS_GD))
7840 {
7841 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPMOD32);
7842 if (tls_ty == (TLS_TLS | TLS_GD))
7843 {
7844 loc = rsec->contents;
7845 loc += (rsec->reloc_count++
7846 * sizeof (Elf32_External_Rela));
7847 bfd_elf32_swap_reloca_out (output_bfd,
7848 &outrel, loc);
7849 outrel.r_offset += 4;
7850 outrel.r_info
7851 = ELF32_R_INFO (indx, R_PPC_DTPREL32);
7852 }
7853 }
7854 else if (tls_ty == (TLS_TLS | TLS_DTPREL))
7855 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPREL32);
7856 else if (tls_ty == (TLS_TLS | TLS_TPREL))
7857 outrel.r_info = ELF32_R_INFO (indx, R_PPC_TPREL32);
7858 else if (indx != 0)
7859 outrel.r_info = ELF32_R_INFO (indx, R_PPC_GLOB_DAT);
7860 else if (ifunc != NULL)
7861 outrel.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
7862 else
7863 outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
7864 if (indx == 0 && tls_ty != (TLS_TLS | TLS_LD))
7865 {
7866 outrel.r_addend += relocation;
7867 if (tls_ty & (TLS_GD | TLS_DTPREL | TLS_TPREL))
7868 outrel.r_addend -= htab->elf.tls_sec->vma;
7869 }
7870 loc = rsec->contents;
7871 loc += (rsec->reloc_count++
7872 * sizeof (Elf32_External_Rela));
7873 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
7874 }
7875
7876 /* Init the .got section contents if we're not
7877 emitting a reloc. */
7878 else
7879 {
7880 bfd_vma value = relocation;
7881
7882 if (tls_ty == (TLS_TLS | TLS_LD))
7883 value = 1;
7884 else if (tls_ty != 0)
7885 {
7886 value -= htab->elf.tls_sec->vma + DTP_OFFSET;
7887 if (tls_ty == (TLS_TLS | TLS_TPREL))
7888 value += DTP_OFFSET - TP_OFFSET;
7889
7890 if (tls_ty == (TLS_TLS | TLS_GD))
7891 {
7892 bfd_put_32 (output_bfd, value,
7893 htab->got->contents + off + 4);
7894 value = 1;
7895 }
7896 }
7897 bfd_put_32 (output_bfd, value,
7898 htab->got->contents + off);
7899 }
7900
7901 off += 4;
7902 if (tls_ty & (TLS_LD | TLS_GD))
7903 off += 4;
7904 }
7905 while (tls_m != 0);
7906
7907 off = *offp;
7908 *offp = off | 1;
7909 }
7910
7911 if (off >= (bfd_vma) -2)
7912 abort ();
7913
7914 if ((tls_type & TLS_TLS) != 0)
7915 {
7916 if (tls_type != (TLS_TLS | TLS_LD))
7917 {
7918 if ((tls_mask & TLS_LD) != 0
7919 && !(h == NULL
7920 || !h->def_dynamic))
7921 off += 8;
7922 if (tls_type != (TLS_TLS | TLS_GD))
7923 {
7924 if ((tls_mask & TLS_GD) != 0)
7925 off += 8;
7926 if (tls_type != (TLS_TLS | TLS_DTPREL))
7927 {
7928 if ((tls_mask & TLS_DTPREL) != 0)
7929 off += 4;
7930 }
7931 }
7932 }
7933 }
7934
7935 relocation = (htab->got->output_section->vma
7936 + htab->got->output_offset
7937 + off
7938 - SYM_VAL (htab->elf.hgot));
7939
7940 /* Addends on got relocations don't make much sense.
7941 x+off@got is actually x@got+off, and since the got is
7942 generated by a hash table traversal, the value in the
7943 got at entry m+n bears little relation to the entry m. */
7944 if (addend != 0)
7945 info->callbacks->einfo
7946 (_("%P: %H: non-zero addend on %s reloc against `%s'\n"),
7947 input_bfd, input_section, rel->r_offset,
7948 howto->name,
7949 sym_name);
7950 }
7951 break;
7952
7953 /* Relocations that need no special processing. */
7954 case R_PPC_LOCAL24PC:
7955 /* It makes no sense to point a local relocation
7956 at a symbol not in this object. */
7957 if (unresolved_reloc)
7958 {
7959 if (! (*info->callbacks->undefined_symbol) (info,
7960 h->root.root.string,
7961 input_bfd,
7962 input_section,
7963 rel->r_offset,
7964 TRUE))
7965 return FALSE;
7966 continue;
7967 }
7968 break;
7969
7970 case R_PPC_DTPREL16:
7971 case R_PPC_DTPREL16_LO:
7972 case R_PPC_DTPREL16_HI:
7973 case R_PPC_DTPREL16_HA:
7974 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
7975 break;
7976
7977 /* Relocations that may need to be propagated if this is a shared
7978 object. */
7979 case R_PPC_TPREL16:
7980 case R_PPC_TPREL16_LO:
7981 case R_PPC_TPREL16_HI:
7982 case R_PPC_TPREL16_HA:
7983 if (h != NULL
7984 && h->root.type == bfd_link_hash_undefweak
7985 && h->dynindx == -1)
7986 {
7987 /* Make this relocation against an undefined weak symbol
7988 resolve to zero. This is really just a tweak, since
7989 code using weak externs ought to check that they are
7990 defined before using them. */
7991 bfd_byte *p = contents + rel->r_offset - d_offset;
7992 unsigned int insn = bfd_get_32 (output_bfd, p);
7993 insn = _bfd_elf_ppc_at_tprel_transform (insn, 2);
7994 if (insn != 0)
7995 bfd_put_32 (output_bfd, insn, p);
7996 break;
7997 }
7998 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
7999 /* The TPREL16 relocs shouldn't really be used in shared
8000 libs as they will result in DT_TEXTREL being set, but
8001 support them anyway. */
8002 goto dodyn;
8003
8004 case R_PPC_TPREL32:
8005 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
8006 goto dodyn;
8007
8008 case R_PPC_DTPREL32:
8009 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
8010 goto dodyn;
8011
8012 case R_PPC_DTPMOD32:
8013 relocation = 1;
8014 addend = 0;
8015 goto dodyn;
8016
8017 case R_PPC_REL16:
8018 case R_PPC_REL16_LO:
8019 case R_PPC_REL16_HI:
8020 case R_PPC_REL16_HA:
8021 break;
8022
8023 case R_PPC_REL32:
8024 if (h == NULL || h == htab->elf.hgot)
8025 break;
8026 /* fall through */
8027
8028 case R_PPC_ADDR32:
8029 case R_PPC_ADDR16:
8030 case R_PPC_ADDR16_LO:
8031 case R_PPC_ADDR16_HI:
8032 case R_PPC_ADDR16_HA:
8033 case R_PPC_UADDR32:
8034 case R_PPC_UADDR16:
8035 goto dodyn;
8036
8037 case R_PPC_VLE_REL8:
8038 case R_PPC_VLE_REL15:
8039 case R_PPC_VLE_REL24:
8040 case R_PPC_REL24:
8041 case R_PPC_REL14:
8042 case R_PPC_REL14_BRTAKEN:
8043 case R_PPC_REL14_BRNTAKEN:
8044 /* If these relocations are not to a named symbol, they can be
8045 handled right here, no need to bother the dynamic linker. */
8046 if (SYMBOL_CALLS_LOCAL (info, h)
8047 || h == htab->elf.hgot)
8048 break;
8049 /* fall through */
8050
8051 case R_PPC_ADDR24:
8052 case R_PPC_ADDR14:
8053 case R_PPC_ADDR14_BRTAKEN:
8054 case R_PPC_ADDR14_BRNTAKEN:
8055 if (h != NULL && !info->shared)
8056 break;
8057 /* fall through */
8058
8059 dodyn:
8060 if ((input_section->flags & SEC_ALLOC) == 0
8061 || is_vxworks_tls)
8062 break;
8063
8064 if ((info->shared
8065 && !(h != NULL
8066 && ((h->root.type == bfd_link_hash_undefined
8067 && (ELF_ST_VISIBILITY (h->other) == STV_HIDDEN
8068 || ELF_ST_VISIBILITY (h->other) == STV_INTERNAL))
8069 || (h->root.type == bfd_link_hash_undefweak
8070 && ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)))
8071 && (must_be_dyn_reloc (info, r_type)
8072 || !SYMBOL_CALLS_LOCAL (info, h)))
8073 || (ELIMINATE_COPY_RELOCS
8074 && !info->shared
8075 && h != NULL
8076 && h->dynindx != -1
8077 && !h->non_got_ref
8078 && !h->def_regular))
8079 {
8080 int skip;
8081 bfd_byte * loc;
8082 #ifdef DEBUG
8083 fprintf (stderr, "ppc_elf_relocate_section needs to "
8084 "create relocation for %s\n",
8085 (h && h->root.root.string
8086 ? h->root.root.string : "<unknown>"));
8087 #endif
8088
8089 /* When generating a shared object, these relocations
8090 are copied into the output file to be resolved at run
8091 time. */
8092 if (sreloc == NULL)
8093 {
8094 sreloc = elf_section_data (input_section)->sreloc;
8095 if (!htab->elf.dynamic_sections_created)
8096 sreloc = htab->reliplt;
8097 if (sreloc == NULL)
8098 return FALSE;
8099 }
8100
8101 skip = 0;
8102 outrel.r_offset = _bfd_elf_section_offset (output_bfd, info,
8103 input_section,
8104 rel->r_offset);
8105 if (outrel.r_offset == (bfd_vma) -1
8106 || outrel.r_offset == (bfd_vma) -2)
8107 skip = (int) outrel.r_offset;
8108 outrel.r_offset += (input_section->output_section->vma
8109 + input_section->output_offset);
8110
8111 if (skip)
8112 memset (&outrel, 0, sizeof outrel);
8113 else if ((h != NULL
8114 && (h->root.type == bfd_link_hash_undefined
8115 || h->root.type == bfd_link_hash_undefweak))
8116 || !SYMBOL_REFERENCES_LOCAL (info, h))
8117 {
8118 unresolved_reloc = FALSE;
8119 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
8120 outrel.r_addend = rel->r_addend;
8121 }
8122 else
8123 {
8124 outrel.r_addend = relocation + rel->r_addend;
8125
8126 if (r_type != R_PPC_ADDR32)
8127 {
8128 long indx = 0;
8129
8130 if (ifunc != NULL)
8131 {
8132 /* If we get here when building a static
8133 executable, then the libc startup function
8134 responsible for applying indirect function
8135 relocations is going to complain about
8136 the reloc type.
8137 If we get here when building a dynamic
8138 executable, it will be because we have
8139 a text relocation. The dynamic loader
8140 will set the text segment writable and
8141 non-executable to apply text relocations.
8142 So we'll segfault when trying to run the
8143 indirection function to resolve the reloc. */
8144 info->callbacks->einfo
8145 (_("%P: %H: relocation %s for indirect "
8146 "function %s unsupported\n"),
8147 input_bfd, input_section, rel->r_offset,
8148 howto->name,
8149 sym_name);
8150 ret = FALSE;
8151 }
8152 else if (r_symndx == STN_UNDEF || bfd_is_abs_section (sec))
8153 ;
8154 else if (sec == NULL || sec->owner == NULL)
8155 {
8156 bfd_set_error (bfd_error_bad_value);
8157 ret = FALSE;
8158 }
8159 else
8160 {
8161 asection *osec;
8162
8163 /* We are turning this relocation into one
8164 against a section symbol. It would be
8165 proper to subtract the symbol's value,
8166 osec->vma, from the emitted reloc addend,
8167 but ld.so expects buggy relocs.
8168 FIXME: Why not always use a zero index? */
8169 osec = sec->output_section;
8170 indx = elf_section_data (osec)->dynindx;
8171 if (indx == 0)
8172 {
8173 osec = htab->elf.text_index_section;
8174 indx = elf_section_data (osec)->dynindx;
8175 }
8176 BFD_ASSERT (indx != 0);
8177 #ifdef DEBUG
8178 if (indx == 0)
8179 printf ("indx=%ld section=%s flags=%08x name=%s\n",
8180 indx, osec->name, osec->flags,
8181 h->root.root.string);
8182 #endif
8183 }
8184
8185 outrel.r_info = ELF32_R_INFO (indx, r_type);
8186 }
8187 else if (ifunc != NULL)
8188 outrel.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
8189 else
8190 outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
8191 }
8192
8193 loc = sreloc->contents;
8194 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
8195 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
8196
8197 if (skip == -1)
8198 continue;
8199
8200 /* This reloc will be computed at runtime. We clear the memory
8201 so that it contains predictable value. */
8202 if (! skip
8203 && ((input_section->flags & SEC_ALLOC) != 0
8204 || ELF32_R_TYPE (outrel.r_info) != R_PPC_RELATIVE))
8205 {
8206 relocation = howto->pc_relative ? outrel.r_offset : 0;
8207 addend = 0;
8208 break;
8209 }
8210 }
8211 break;
8212
8213 case R_PPC_RELAX_PLT:
8214 case R_PPC_RELAX_PLTREL24:
8215 if (h != NULL)
8216 {
8217 struct plt_entry *ent;
8218 bfd_vma got2_addend = 0;
8219
8220 if (r_type == R_PPC_RELAX_PLTREL24)
8221 {
8222 if (info->shared)
8223 got2_addend = addend;
8224 addend = 0;
8225 }
8226 ent = find_plt_ent (&h->plt.plist, got2, got2_addend);
8227 if (htab->plt_type == PLT_NEW)
8228 relocation = (htab->glink->output_section->vma
8229 + htab->glink->output_offset
8230 + ent->glink_offset);
8231 else
8232 relocation = (htab->plt->output_section->vma
8233 + htab->plt->output_offset
8234 + ent->plt.offset);
8235 }
8236 /* Fall thru */
8237
8238 case R_PPC_RELAX:
8239 if (info->shared)
8240 relocation -= (input_section->output_section->vma
8241 + input_section->output_offset
8242 + rel->r_offset - 4);
8243
8244 {
8245 unsigned long t0;
8246 unsigned long t1;
8247
8248 t0 = bfd_get_32 (output_bfd, contents + rel->r_offset);
8249 t1 = bfd_get_32 (output_bfd, contents + rel->r_offset + 4);
8250
8251 /* We're clearing the bits for R_PPC_ADDR16_HA
8252 and R_PPC_ADDR16_LO here. */
8253 t0 &= ~0xffff;
8254 t1 &= ~0xffff;
8255
8256 /* t0 is HA, t1 is LO */
8257 relocation += addend;
8258 t0 |= ((relocation + 0x8000) >> 16) & 0xffff;
8259 t1 |= relocation & 0xffff;
8260
8261 bfd_put_32 (output_bfd, t0, contents + rel->r_offset);
8262 bfd_put_32 (output_bfd, t1, contents + rel->r_offset + 4);
8263
8264 /* Rewrite the reloc and convert one of the trailing nop
8265 relocs to describe this relocation. */
8266 BFD_ASSERT (ELF32_R_TYPE (relend[-1].r_info) == R_PPC_NONE);
8267 /* The relocs are at the bottom 2 bytes */
8268 rel[0].r_offset += 2;
8269 memmove (rel + 1, rel, (relend - rel - 1) * sizeof (*rel));
8270 rel[0].r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_HA);
8271 rel[1].r_offset += 4;
8272 rel[1].r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_LO);
8273 rel++;
8274 }
8275 continue;
8276
8277 /* Indirect .sdata relocation. */
8278 case R_PPC_EMB_SDAI16:
8279 BFD_ASSERT (htab->sdata[0].section != NULL);
8280 if (!is_static_defined (htab->sdata[0].sym))
8281 {
8282 unresolved_reloc = TRUE;
8283 break;
8284 }
8285 relocation
8286 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[0],
8287 h, relocation, rel);
8288 addend = 0;
8289 break;
8290
8291 /* Indirect .sdata2 relocation. */
8292 case R_PPC_EMB_SDA2I16:
8293 BFD_ASSERT (htab->sdata[1].section != NULL);
8294 if (!is_static_defined (htab->sdata[1].sym))
8295 {
8296 unresolved_reloc = TRUE;
8297 break;
8298 }
8299 relocation
8300 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[1],
8301 h, relocation, rel);
8302 addend = 0;
8303 break;
8304
8305 /* Handle the TOC16 reloc. We want to use the offset within the .got
8306 section, not the actual VMA. This is appropriate when generating
8307 an embedded ELF object, for which the .got section acts like the
8308 AIX .toc section. */
8309 case R_PPC_TOC16: /* phony GOT16 relocations */
8310 if (sec == NULL || sec->output_section == NULL)
8311 {
8312 unresolved_reloc = TRUE;
8313 break;
8314 }
8315 BFD_ASSERT (strcmp (bfd_get_section_name (sec->owner, sec),
8316 ".got") == 0
8317 || strcmp (bfd_get_section_name (sec->owner, sec),
8318 ".cgot") == 0);
8319
8320 addend -= sec->output_section->vma + sec->output_offset + 0x8000;
8321 break;
8322
8323 case R_PPC_PLTREL24:
8324 if (h == NULL || ifunc != NULL)
8325 break;
8326 /* Relocation is to the entry for this symbol in the
8327 procedure linkage table. */
8328 {
8329 struct plt_entry *ent = find_plt_ent (&h->plt.plist, got2,
8330 info->shared ? addend : 0);
8331 addend = 0;
8332 if (ent == NULL
8333 || htab->plt == NULL)
8334 {
8335 /* We didn't make a PLT entry for this symbol. This
8336 happens when statically linking PIC code, or when
8337 using -Bsymbolic. */
8338 break;
8339 }
8340
8341 unresolved_reloc = FALSE;
8342 if (htab->plt_type == PLT_NEW)
8343 relocation = (htab->glink->output_section->vma
8344 + htab->glink->output_offset
8345 + ent->glink_offset);
8346 else
8347 relocation = (htab->plt->output_section->vma
8348 + htab->plt->output_offset
8349 + ent->plt.offset);
8350 }
8351 break;
8352
8353 /* Relocate against _SDA_BASE_. */
8354 case R_PPC_SDAREL16:
8355 {
8356 const char *name;
8357 struct elf_link_hash_entry *sda = htab->sdata[0].sym;
8358
8359 if (sec == NULL
8360 || sec->output_section == NULL
8361 || !is_static_defined (sda))
8362 {
8363 unresolved_reloc = TRUE;
8364 break;
8365 }
8366 addend -= SYM_VAL (sda);
8367
8368 name = bfd_get_section_name (output_bfd, sec->output_section);
8369 if (! ((CONST_STRNEQ (name, ".sdata")
8370 && (name[6] == 0 || name[6] == '.'))
8371 || (CONST_STRNEQ (name, ".sbss")
8372 && (name[5] == 0 || name[5] == '.'))))
8373 {
8374 info->callbacks->einfo
8375 (_("%P: %B: the target (%s) of a %s relocation is "
8376 "in the wrong output section (%s)\n"),
8377 input_bfd,
8378 sym_name,
8379 howto->name,
8380 name);
8381 }
8382 }
8383 break;
8384
8385 /* Relocate against _SDA2_BASE_. */
8386 case R_PPC_EMB_SDA2REL:
8387 {
8388 const char *name;
8389 struct elf_link_hash_entry *sda = htab->sdata[1].sym;
8390
8391 if (sec == NULL
8392 || sec->output_section == NULL
8393 || !is_static_defined (sda))
8394 {
8395 unresolved_reloc = TRUE;
8396 break;
8397 }
8398 addend -= SYM_VAL (sda);
8399
8400 name = bfd_get_section_name (output_bfd, sec->output_section);
8401 if (! (CONST_STRNEQ (name, ".sdata2")
8402 || CONST_STRNEQ (name, ".sbss2")))
8403 {
8404 info->callbacks->einfo
8405 (_("%P: %B: the target (%s) of a %s relocation is "
8406 "in the wrong output section (%s)\n"),
8407 input_bfd,
8408 sym_name,
8409 howto->name,
8410 name);
8411 }
8412 }
8413 break;
8414
8415 case R_PPC_VLE_LO16A:
8416 relocation = (relocation + addend) & 0xffff;
8417 ppc_elf_vle_split16 (output_bfd, contents, rel->r_offset,
8418 relocation, split16a_type);
8419 continue;
8420
8421 case R_PPC_VLE_LO16D:
8422 relocation = (relocation + addend) & 0xffff;
8423 ppc_elf_vle_split16 (output_bfd, contents, rel->r_offset,
8424 relocation, split16d_type);
8425 continue;
8426
8427 case R_PPC_VLE_HI16A:
8428 relocation = ((relocation + addend) >> 16) & 0xffff;
8429 ppc_elf_vle_split16 (output_bfd, contents, rel->r_offset,
8430 relocation, split16a_type);
8431 continue;
8432
8433 case R_PPC_VLE_HI16D:
8434 relocation = ((relocation + addend) >> 16) & 0xffff;
8435 ppc_elf_vle_split16 (output_bfd, contents, rel->r_offset,
8436 relocation, split16d_type);
8437 continue;
8438
8439 case R_PPC_VLE_HA16A:
8440 {
8441 bfd_vma value = relocation + addend;
8442 value = (((value >> 16) + ((value & 0x8000) ? 1 : 0)) & 0xffff);
8443 ppc_elf_vle_split16 (output_bfd, contents, rel->r_offset,
8444 value, split16a_type);
8445 }
8446 continue;
8447
8448 case R_PPC_VLE_HA16D:
8449 {
8450 bfd_vma value = relocation + addend;
8451 value = (((value >> 16) + ((value & 0x8000) ? 1 : 0)) & 0xffff);
8452 ppc_elf_vle_split16 (output_bfd, contents, rel->r_offset,
8453 value, split16d_type);
8454 }
8455 continue;
8456
8457 /* Relocate against either _SDA_BASE_, _SDA2_BASE_, or 0. */
8458 case R_PPC_EMB_SDA21:
8459 case R_PPC_VLE_SDA21:
8460 case R_PPC_EMB_RELSDA:
8461 case R_PPC_VLE_SDA21_LO:
8462 {
8463 const char *name;
8464 int reg;
8465 struct elf_link_hash_entry *sda = NULL;
8466
8467 if (sec == NULL || sec->output_section == NULL)
8468 {
8469 unresolved_reloc = TRUE;
8470 break;
8471 }
8472
8473 name = bfd_get_section_name (output_bfd, sec->output_section);
8474 if (((CONST_STRNEQ (name, ".sdata")
8475 && (name[6] == 0 || name[6] == '.'))
8476 || (CONST_STRNEQ (name, ".sbss")
8477 && (name[5] == 0 || name[5] == '.'))))
8478 {
8479 reg = 13;
8480 sda = htab->sdata[0].sym;
8481 }
8482 else if (CONST_STRNEQ (name, ".sdata2")
8483 || CONST_STRNEQ (name, ".sbss2"))
8484 {
8485 reg = 2;
8486 sda = htab->sdata[1].sym;
8487 }
8488 else if (strcmp (name, ".PPC.EMB.sdata0") == 0
8489 || strcmp (name, ".PPC.EMB.sbss0") == 0)
8490 {
8491 reg = 0;
8492 }
8493 else
8494 {
8495 info->callbacks->einfo
8496 (_("%P: %B: the target (%s) of a %s relocation is "
8497 "in the wrong output section (%s)\n"),
8498 input_bfd,
8499 sym_name,
8500 howto->name,
8501 name);
8502
8503 bfd_set_error (bfd_error_bad_value);
8504 ret = FALSE;
8505 continue;
8506 }
8507
8508 if (sda != NULL)
8509 {
8510 if (!is_static_defined (sda))
8511 {
8512 unresolved_reloc = TRUE;
8513 break;
8514 }
8515 addend -= SYM_VAL (sda);
8516 }
8517
8518 if (reg == 0
8519 && (r_type == R_PPC_VLE_SDA21
8520 || r_type == R_PPC_VLE_SDA21_LO))
8521 {
8522 /* Use the split20 format. */
8523 bfd_vma insn, bits12to15, bits21to31;
8524 bfd_vma value = (relocation + rel->r_offset) & 0xffff;
8525 /* Propagate sign bit, if necessary. */
8526 insn = (value & 0x8000) ? 0x70107800 : 0x70000000;
8527 bits12to15 = value & 0x700;
8528 bits21to31 = value & 0x7ff;
8529 insn |= bits12to15;
8530 insn |= bits21to31;
8531 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
8532 continue;
8533 }
8534 else if (r_type == R_PPC_EMB_SDA21
8535 || r_type == R_PPC_VLE_SDA21
8536 || r_type == R_PPC_VLE_SDA21_LO)
8537 {
8538 bfd_vma insn; /* Fill in register field. */
8539
8540 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
8541 insn = (insn & ~RA_REGISTER_MASK) | (reg << RA_REGISTER_SHIFT);
8542 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
8543 }
8544 }
8545 break;
8546
8547 case R_PPC_VLE_SDAREL_LO16A:
8548 case R_PPC_VLE_SDAREL_LO16D:
8549 case R_PPC_VLE_SDAREL_HI16A:
8550 case R_PPC_VLE_SDAREL_HI16D:
8551 case R_PPC_VLE_SDAREL_HA16A:
8552 case R_PPC_VLE_SDAREL_HA16D:
8553 {
8554 bfd_vma value;
8555 const char *name;
8556 //int reg;
8557 struct elf_link_hash_entry *sda = NULL;
8558
8559 if (sec == NULL || sec->output_section == NULL)
8560 {
8561 unresolved_reloc = TRUE;
8562 break;
8563 }
8564
8565 name = bfd_get_section_name (output_bfd, sec->output_section);
8566 if (((CONST_STRNEQ (name, ".sdata")
8567 && (name[6] == 0 || name[6] == '.'))
8568 || (CONST_STRNEQ (name, ".sbss")
8569 && (name[5] == 0 || name[5] == '.'))))
8570 {
8571 //reg = 13;
8572 sda = htab->sdata[0].sym;
8573 }
8574 else if (CONST_STRNEQ (name, ".sdata2")
8575 || CONST_STRNEQ (name, ".sbss2"))
8576 {
8577 //reg = 2;
8578 sda = htab->sdata[1].sym;
8579 }
8580 else
8581 {
8582 (*_bfd_error_handler)
8583 (_("%B: the target (%s) of a %s relocation is "
8584 "in the wrong output section (%s)"),
8585 input_bfd,
8586 sym_name,
8587 howto->name,
8588 name);
8589
8590 bfd_set_error (bfd_error_bad_value);
8591 ret = FALSE;
8592 continue;
8593 }
8594
8595 if (sda != NULL)
8596 {
8597 if (!is_static_defined (sda))
8598 {
8599 unresolved_reloc = TRUE;
8600 break;
8601 }
8602 }
8603
8604 value = sda->root.u.def.section->output_section->vma
8605 + sda->root.u.def.section->output_offset;
8606
8607 if (r_type == R_PPC_VLE_SDAREL_LO16A)
8608 {
8609 value = (value + addend) & 0xffff;
8610 ppc_elf_vle_split16 (output_bfd, contents, rel->r_offset,
8611 value, split16a_type);
8612 }
8613 else if (r_type == R_PPC_VLE_SDAREL_LO16D)
8614 {
8615 value = (value + addend) & 0xffff;
8616 ppc_elf_vle_split16 (output_bfd, contents, rel->r_offset,
8617 value, split16d_type);
8618 }
8619 else if (r_type == R_PPC_VLE_SDAREL_HI16A)
8620 {
8621 value = ((value + addend) >> 16) & 0xffff;
8622 ppc_elf_vle_split16 (output_bfd, contents, rel->r_offset,
8623 value, split16a_type);
8624 }
8625 else if (r_type == R_PPC_VLE_SDAREL_HI16D)
8626 {
8627 value = ((value + addend) >> 16) & 0xffff;
8628 ppc_elf_vle_split16 (output_bfd, contents, rel->r_offset,
8629 value, split16d_type);
8630 }
8631 else if (r_type == R_PPC_VLE_SDAREL_HA16A)
8632 {
8633 value += addend;
8634 value = (((value >> 16) + ((value & 0x8000) ? 1 : 0)) & 0xffff);
8635 ppc_elf_vle_split16 (output_bfd, contents, rel->r_offset,
8636 value, split16a_type);
8637 }
8638 else if (r_type == R_PPC_VLE_SDAREL_HA16D)
8639 {
8640 value += addend;
8641 value = (((value >> 16) + ((value & 0x8000) ? 1 : 0)) & 0xffff);
8642 ppc_elf_vle_split16 (output_bfd, contents, rel->r_offset,
8643 value, split16d_type);
8644 }
8645 }
8646 continue;
8647
8648 /* Relocate against the beginning of the section. */
8649 case R_PPC_SECTOFF:
8650 case R_PPC_SECTOFF_LO:
8651 case R_PPC_SECTOFF_HI:
8652 case R_PPC_SECTOFF_HA:
8653 if (sec == NULL || sec->output_section == NULL)
8654 {
8655 unresolved_reloc = TRUE;
8656 break;
8657 }
8658 addend -= sec->output_section->vma;
8659 break;
8660
8661 /* Negative relocations. */
8662 case R_PPC_EMB_NADDR32:
8663 case R_PPC_EMB_NADDR16:
8664 case R_PPC_EMB_NADDR16_LO:
8665 case R_PPC_EMB_NADDR16_HI:
8666 case R_PPC_EMB_NADDR16_HA:
8667 addend -= 2 * relocation;
8668 break;
8669
8670 case R_PPC_COPY:
8671 case R_PPC_GLOB_DAT:
8672 case R_PPC_JMP_SLOT:
8673 case R_PPC_RELATIVE:
8674 case R_PPC_IRELATIVE:
8675 case R_PPC_PLT32:
8676 case R_PPC_PLTREL32:
8677 case R_PPC_PLT16_LO:
8678 case R_PPC_PLT16_HI:
8679 case R_PPC_PLT16_HA:
8680 case R_PPC_ADDR30:
8681 case R_PPC_EMB_RELSEC16:
8682 case R_PPC_EMB_RELST_LO:
8683 case R_PPC_EMB_RELST_HI:
8684 case R_PPC_EMB_RELST_HA:
8685 case R_PPC_EMB_BIT_FLD:
8686 info->callbacks->einfo
8687 (_("%P: %B: relocation %s is not yet supported for symbol %s\n"),
8688 input_bfd,
8689 howto->name,
8690 sym_name);
8691
8692 bfd_set_error (bfd_error_invalid_operation);
8693 ret = FALSE;
8694 continue;
8695 }
8696
8697 /* Do any further special processing. */
8698 switch (r_type)
8699 {
8700 default:
8701 break;
8702
8703 case R_PPC_ADDR16_HA:
8704 case R_PPC_REL16_HA:
8705 case R_PPC_SECTOFF_HA:
8706 case R_PPC_TPREL16_HA:
8707 case R_PPC_DTPREL16_HA:
8708 case R_PPC_EMB_NADDR16_HA:
8709 case R_PPC_EMB_RELST_HA:
8710 /* It's just possible that this symbol is a weak symbol
8711 that's not actually defined anywhere. In that case,
8712 'sec' would be NULL, and we should leave the symbol
8713 alone (it will be set to zero elsewhere in the link). */
8714 if (sec == NULL)
8715 break;
8716 /* Fall thru */
8717
8718 case R_PPC_PLT16_HA:
8719 case R_PPC_GOT16_HA:
8720 case R_PPC_GOT_TLSGD16_HA:
8721 case R_PPC_GOT_TLSLD16_HA:
8722 case R_PPC_GOT_TPREL16_HA:
8723 case R_PPC_GOT_DTPREL16_HA:
8724 /* Add 0x10000 if sign bit in 0:15 is set.
8725 Bits 0:15 are not used. */
8726 addend += 0x8000;
8727 break;
8728 }
8729
8730 #ifdef DEBUG
8731 fprintf (stderr, "\ttype = %s (%d), name = %s, symbol index = %ld, "
8732 "offset = %ld, addend = %ld\n",
8733 howto->name,
8734 (int) r_type,
8735 sym_name,
8736 r_symndx,
8737 (long) rel->r_offset,
8738 (long) addend);
8739 #endif
8740
8741 if (unresolved_reloc
8742 && !((input_section->flags & SEC_DEBUGGING) != 0
8743 && h->def_dynamic)
8744 && _bfd_elf_section_offset (output_bfd, info, input_section,
8745 rel->r_offset) != (bfd_vma) -1)
8746 {
8747 info->callbacks->einfo
8748 (_("%P: %H: unresolvable %s relocation against symbol `%s'\n"),
8749 input_bfd, input_section, rel->r_offset,
8750 howto->name,
8751 sym_name);
8752 ret = FALSE;
8753 }
8754
8755 r = _bfd_final_link_relocate (howto,
8756 input_bfd,
8757 input_section,
8758 contents,
8759 rel->r_offset,
8760 relocation,
8761 addend);
8762
8763 if (r != bfd_reloc_ok)
8764 {
8765 if (r == bfd_reloc_overflow)
8766 {
8767 if (warned)
8768 continue;
8769 if (h != NULL
8770 && h->root.type == bfd_link_hash_undefweak
8771 && howto->pc_relative)
8772 {
8773 /* Assume this is a call protected by other code that
8774 detect the symbol is undefined. If this is the case,
8775 we can safely ignore the overflow. If not, the
8776 program is hosed anyway, and a little warning isn't
8777 going to help. */
8778
8779 continue;
8780 }
8781
8782 if (! (*info->callbacks->reloc_overflow) (info,
8783 (h ? &h->root : NULL),
8784 sym_name,
8785 howto->name,
8786 rel->r_addend,
8787 input_bfd,
8788 input_section,
8789 rel->r_offset))
8790 return FALSE;
8791 }
8792 else
8793 {
8794 info->callbacks->einfo
8795 (_("%P: %H: %s reloc against `%s': error %d\n"),
8796 input_bfd, input_section, rel->r_offset,
8797 howto->name, sym_name, (int) r);
8798 ret = FALSE;
8799 }
8800 }
8801 }
8802
8803 #ifdef DEBUG
8804 fprintf (stderr, "\n");
8805 #endif
8806
8807 return ret;
8808 }
8809 \f
8810 /* Finish up dynamic symbol handling. We set the contents of various
8811 dynamic sections here. */
8812
8813 static bfd_boolean
8814 ppc_elf_finish_dynamic_symbol (bfd *output_bfd,
8815 struct bfd_link_info *info,
8816 struct elf_link_hash_entry *h,
8817 Elf_Internal_Sym *sym)
8818 {
8819 struct ppc_elf_link_hash_table *htab;
8820 struct plt_entry *ent;
8821 bfd_boolean doneone;
8822
8823 #ifdef DEBUG
8824 fprintf (stderr, "ppc_elf_finish_dynamic_symbol called for %s",
8825 h->root.root.string);
8826 #endif
8827
8828 htab = ppc_elf_hash_table (info);
8829 BFD_ASSERT (htab->elf.dynobj != NULL);
8830
8831 doneone = FALSE;
8832 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
8833 if (ent->plt.offset != (bfd_vma) -1)
8834 {
8835 if (!doneone)
8836 {
8837 Elf_Internal_Rela rela;
8838 bfd_byte *loc;
8839 bfd_vma reloc_index;
8840
8841 if (htab->plt_type == PLT_NEW
8842 || !htab->elf.dynamic_sections_created
8843 || h->dynindx == -1)
8844 reloc_index = ent->plt.offset / 4;
8845 else
8846 {
8847 reloc_index = ((ent->plt.offset - htab->plt_initial_entry_size)
8848 / htab->plt_slot_size);
8849 if (reloc_index > PLT_NUM_SINGLE_ENTRIES
8850 && htab->plt_type == PLT_OLD)
8851 reloc_index -= (reloc_index - PLT_NUM_SINGLE_ENTRIES) / 2;
8852 }
8853
8854 /* This symbol has an entry in the procedure linkage table.
8855 Set it up. */
8856 if (htab->plt_type == PLT_VXWORKS
8857 && htab->elf.dynamic_sections_created
8858 && h->dynindx != -1)
8859 {
8860 bfd_vma got_offset;
8861 const bfd_vma *plt_entry;
8862
8863 /* The first three entries in .got.plt are reserved. */
8864 got_offset = (reloc_index + 3) * 4;
8865
8866 /* Use the right PLT. */
8867 plt_entry = info->shared ? ppc_elf_vxworks_pic_plt_entry
8868 : ppc_elf_vxworks_plt_entry;
8869
8870 /* Fill in the .plt on VxWorks. */
8871 if (info->shared)
8872 {
8873 bfd_put_32 (output_bfd,
8874 plt_entry[0] | PPC_HA (got_offset),
8875 htab->plt->contents + ent->plt.offset + 0);
8876 bfd_put_32 (output_bfd,
8877 plt_entry[1] | PPC_LO (got_offset),
8878 htab->plt->contents + ent->plt.offset + 4);
8879 }
8880 else
8881 {
8882 bfd_vma got_loc = got_offset + SYM_VAL (htab->elf.hgot);
8883
8884 bfd_put_32 (output_bfd,
8885 plt_entry[0] | PPC_HA (got_loc),
8886 htab->plt->contents + ent->plt.offset + 0);
8887 bfd_put_32 (output_bfd,
8888 plt_entry[1] | PPC_LO (got_loc),
8889 htab->plt->contents + ent->plt.offset + 4);
8890 }
8891
8892 bfd_put_32 (output_bfd, plt_entry[2],
8893 htab->plt->contents + ent->plt.offset + 8);
8894 bfd_put_32 (output_bfd, plt_entry[3],
8895 htab->plt->contents + ent->plt.offset + 12);
8896
8897 /* This instruction is an immediate load. The value loaded is
8898 the byte offset of the R_PPC_JMP_SLOT relocation from the
8899 start of the .rela.plt section. The value is stored in the
8900 low-order 16 bits of the load instruction. */
8901 /* NOTE: It appears that this is now an index rather than a
8902 prescaled offset. */
8903 bfd_put_32 (output_bfd,
8904 plt_entry[4] | reloc_index,
8905 htab->plt->contents + ent->plt.offset + 16);
8906 /* This instruction is a PC-relative branch whose target is
8907 the start of the PLT section. The address of this branch
8908 instruction is 20 bytes beyond the start of this PLT entry.
8909 The address is encoded in bits 6-29, inclusive. The value
8910 stored is right-shifted by two bits, permitting a 26-bit
8911 offset. */
8912 bfd_put_32 (output_bfd,
8913 (plt_entry[5]
8914 | (-(ent->plt.offset + 20) & 0x03fffffc)),
8915 htab->plt->contents + ent->plt.offset + 20);
8916 bfd_put_32 (output_bfd, plt_entry[6],
8917 htab->plt->contents + ent->plt.offset + 24);
8918 bfd_put_32 (output_bfd, plt_entry[7],
8919 htab->plt->contents + ent->plt.offset + 28);
8920
8921 /* Fill in the GOT entry corresponding to this PLT slot with
8922 the address immediately after the the "bctr" instruction
8923 in this PLT entry. */
8924 bfd_put_32 (output_bfd, (htab->plt->output_section->vma
8925 + htab->plt->output_offset
8926 + ent->plt.offset + 16),
8927 htab->sgotplt->contents + got_offset);
8928
8929 if (!info->shared)
8930 {
8931 /* Fill in a couple of entries in .rela.plt.unloaded. */
8932 loc = htab->srelplt2->contents
8933 + ((VXWORKS_PLTRESOLVE_RELOCS + reloc_index
8934 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS)
8935 * sizeof (Elf32_External_Rela));
8936
8937 /* Provide the @ha relocation for the first instruction. */
8938 rela.r_offset = (htab->plt->output_section->vma
8939 + htab->plt->output_offset
8940 + ent->plt.offset + 2);
8941 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
8942 R_PPC_ADDR16_HA);
8943 rela.r_addend = got_offset;
8944 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
8945 loc += sizeof (Elf32_External_Rela);
8946
8947 /* Provide the @l relocation for the second instruction. */
8948 rela.r_offset = (htab->plt->output_section->vma
8949 + htab->plt->output_offset
8950 + ent->plt.offset + 6);
8951 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
8952 R_PPC_ADDR16_LO);
8953 rela.r_addend = got_offset;
8954 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
8955 loc += sizeof (Elf32_External_Rela);
8956
8957 /* Provide a relocation for the GOT entry corresponding to this
8958 PLT slot. Point it at the middle of the .plt entry. */
8959 rela.r_offset = (htab->sgotplt->output_section->vma
8960 + htab->sgotplt->output_offset
8961 + got_offset);
8962 rela.r_info = ELF32_R_INFO (htab->elf.hplt->indx,
8963 R_PPC_ADDR32);
8964 rela.r_addend = ent->plt.offset + 16;
8965 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
8966 }
8967
8968 /* VxWorks uses non-standard semantics for R_PPC_JMP_SLOT.
8969 In particular, the offset for the relocation is not the
8970 address of the PLT entry for this function, as specified
8971 by the ABI. Instead, the offset is set to the address of
8972 the GOT slot for this function. See EABI 4.4.4.1. */
8973 rela.r_offset = (htab->sgotplt->output_section->vma
8974 + htab->sgotplt->output_offset
8975 + got_offset);
8976
8977 }
8978 else
8979 {
8980 asection *splt = htab->plt;
8981 if (!htab->elf.dynamic_sections_created
8982 || h->dynindx == -1)
8983 splt = htab->iplt;
8984
8985 rela.r_offset = (splt->output_section->vma
8986 + splt->output_offset
8987 + ent->plt.offset);
8988 if (htab->plt_type == PLT_OLD
8989 || !htab->elf.dynamic_sections_created
8990 || h->dynindx == -1)
8991 {
8992 /* We don't need to fill in the .plt. The ppc dynamic
8993 linker will fill it in. */
8994 }
8995 else
8996 {
8997 bfd_vma val = (htab->glink_pltresolve + ent->plt.offset
8998 + htab->glink->output_section->vma
8999 + htab->glink->output_offset);
9000 bfd_put_32 (output_bfd, val,
9001 splt->contents + ent->plt.offset);
9002 }
9003 }
9004
9005 /* Fill in the entry in the .rela.plt section. */
9006 rela.r_addend = 0;
9007 if (!htab->elf.dynamic_sections_created
9008 || h->dynindx == -1)
9009 {
9010 BFD_ASSERT (h->type == STT_GNU_IFUNC
9011 && h->def_regular
9012 && (h->root.type == bfd_link_hash_defined
9013 || h->root.type == bfd_link_hash_defweak));
9014 rela.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
9015 rela.r_addend = SYM_VAL (h);
9016 }
9017 else
9018 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_JMP_SLOT);
9019
9020 if (!htab->elf.dynamic_sections_created
9021 || h->dynindx == -1)
9022 loc = (htab->reliplt->contents
9023 + (htab->reliplt->reloc_count++
9024 * sizeof (Elf32_External_Rela)));
9025 else
9026 loc = (htab->relplt->contents
9027 + reloc_index * sizeof (Elf32_External_Rela));
9028 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
9029
9030 if (!h->def_regular)
9031 {
9032 /* Mark the symbol as undefined, rather than as
9033 defined in the .plt section. Leave the value if
9034 there were any relocations where pointer equality
9035 matters (this is a clue for the dynamic linker, to
9036 make function pointer comparisons work between an
9037 application and shared library), otherwise set it
9038 to zero. */
9039 sym->st_shndx = SHN_UNDEF;
9040 if (!h->pointer_equality_needed)
9041 sym->st_value = 0;
9042 else if (!h->ref_regular_nonweak)
9043 {
9044 /* This breaks function pointer comparisons, but
9045 that is better than breaking tests for a NULL
9046 function pointer. */
9047 sym->st_value = 0;
9048 }
9049 }
9050 else if (h->type == STT_GNU_IFUNC
9051 && !info->shared)
9052 {
9053 /* Set the value of ifunc symbols in a non-pie
9054 executable to the glink entry. This is to avoid
9055 text relocations. We can't do this for ifunc in
9056 allocate_dynrelocs, as we do for normal dynamic
9057 function symbols with plt entries, because we need
9058 to keep the original value around for the ifunc
9059 relocation. */
9060 sym->st_shndx = (_bfd_elf_section_from_bfd_section
9061 (output_bfd, htab->glink->output_section));
9062 sym->st_value = (ent->glink_offset
9063 + htab->glink->output_offset
9064 + htab->glink->output_section->vma);
9065 }
9066 doneone = TRUE;
9067 }
9068
9069 if (htab->plt_type == PLT_NEW
9070 || !htab->elf.dynamic_sections_created
9071 || h->dynindx == -1)
9072 {
9073 unsigned char *p;
9074 asection *splt = htab->plt;
9075 if (!htab->elf.dynamic_sections_created
9076 || h->dynindx == -1)
9077 splt = htab->iplt;
9078
9079 p = (unsigned char *) htab->glink->contents + ent->glink_offset;
9080
9081 if (h == htab->tls_get_addr && !htab->no_tls_get_addr_opt)
9082 {
9083 bfd_put_32 (output_bfd, LWZ_11_3, p);
9084 p += 4;
9085 bfd_put_32 (output_bfd, LWZ_12_3 + 4, p);
9086 p += 4;
9087 bfd_put_32 (output_bfd, MR_0_3, p);
9088 p += 4;
9089 bfd_put_32 (output_bfd, CMPWI_11_0, p);
9090 p += 4;
9091 bfd_put_32 (output_bfd, ADD_3_12_2, p);
9092 p += 4;
9093 bfd_put_32 (output_bfd, BEQLR, p);
9094 p += 4;
9095 bfd_put_32 (output_bfd, MR_3_0, p);
9096 p += 4;
9097 bfd_put_32 (output_bfd, NOP, p);
9098 p += 4;
9099 }
9100
9101 write_glink_stub (ent, splt, p, info);
9102
9103 if (!info->shared)
9104 /* We only need one non-PIC glink stub. */
9105 break;
9106 }
9107 else
9108 break;
9109 }
9110
9111 if (h->needs_copy)
9112 {
9113 asection *s;
9114 Elf_Internal_Rela rela;
9115 bfd_byte *loc;
9116
9117 /* This symbols needs a copy reloc. Set it up. */
9118
9119 #ifdef DEBUG
9120 fprintf (stderr, ", copy");
9121 #endif
9122
9123 BFD_ASSERT (h->dynindx != -1);
9124
9125 if (ppc_elf_hash_entry (h)->has_sda_refs)
9126 s = htab->relsbss;
9127 else
9128 s = htab->relbss;
9129 BFD_ASSERT (s != NULL);
9130
9131 rela.r_offset = SYM_VAL (h);
9132 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_COPY);
9133 rela.r_addend = 0;
9134 loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
9135 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
9136 }
9137
9138 #ifdef DEBUG
9139 fprintf (stderr, "\n");
9140 #endif
9141
9142 return TRUE;
9143 }
9144 \f
9145 static enum elf_reloc_type_class
9146 ppc_elf_reloc_type_class (const Elf_Internal_Rela *rela)
9147 {
9148 switch (ELF32_R_TYPE (rela->r_info))
9149 {
9150 case R_PPC_RELATIVE:
9151 return reloc_class_relative;
9152 case R_PPC_REL24:
9153 case R_PPC_ADDR24:
9154 case R_PPC_JMP_SLOT:
9155 return reloc_class_plt;
9156 case R_PPC_COPY:
9157 return reloc_class_copy;
9158 default:
9159 return reloc_class_normal;
9160 }
9161 }
9162 \f
9163 /* Finish up the dynamic sections. */
9164
9165 static bfd_boolean
9166 ppc_elf_finish_dynamic_sections (bfd *output_bfd,
9167 struct bfd_link_info *info)
9168 {
9169 asection *sdyn;
9170 asection *splt;
9171 struct ppc_elf_link_hash_table *htab;
9172 bfd_vma got;
9173 bfd *dynobj;
9174 bfd_boolean ret = TRUE;
9175
9176 #ifdef DEBUG
9177 fprintf (stderr, "ppc_elf_finish_dynamic_sections called\n");
9178 #endif
9179
9180 htab = ppc_elf_hash_table (info);
9181 dynobj = elf_hash_table (info)->dynobj;
9182 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
9183 if (htab->is_vxworks)
9184 splt = bfd_get_section_by_name (dynobj, ".plt");
9185 else
9186 splt = NULL;
9187
9188 got = 0;
9189 if (htab->elf.hgot != NULL)
9190 got = SYM_VAL (htab->elf.hgot);
9191
9192 if (htab->elf.dynamic_sections_created)
9193 {
9194 Elf32_External_Dyn *dyncon, *dynconend;
9195
9196 BFD_ASSERT (htab->plt != NULL && sdyn != NULL);
9197
9198 dyncon = (Elf32_External_Dyn *) sdyn->contents;
9199 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
9200 for (; dyncon < dynconend; dyncon++)
9201 {
9202 Elf_Internal_Dyn dyn;
9203 asection *s;
9204
9205 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
9206
9207 switch (dyn.d_tag)
9208 {
9209 case DT_PLTGOT:
9210 if (htab->is_vxworks)
9211 s = htab->sgotplt;
9212 else
9213 s = htab->plt;
9214 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
9215 break;
9216
9217 case DT_PLTRELSZ:
9218 dyn.d_un.d_val = htab->relplt->size;
9219 break;
9220
9221 case DT_JMPREL:
9222 s = htab->relplt;
9223 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
9224 break;
9225
9226 case DT_PPC_GOT:
9227 dyn.d_un.d_ptr = got;
9228 break;
9229
9230 case DT_RELASZ:
9231 if (htab->is_vxworks)
9232 {
9233 if (htab->relplt)
9234 dyn.d_un.d_ptr -= htab->relplt->size;
9235 break;
9236 }
9237 continue;
9238
9239 default:
9240 if (htab->is_vxworks
9241 && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn))
9242 break;
9243 continue;
9244 }
9245
9246 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
9247 }
9248 }
9249
9250 if (htab->got != NULL)
9251 {
9252 if (htab->elf.hgot->root.u.def.section == htab->got
9253 || htab->elf.hgot->root.u.def.section == htab->sgotplt)
9254 {
9255 unsigned char *p = htab->elf.hgot->root.u.def.section->contents;
9256
9257 p += htab->elf.hgot->root.u.def.value;
9258 if (htab->plt_type == PLT_OLD)
9259 {
9260 /* Add a blrl instruction at _GLOBAL_OFFSET_TABLE_-4
9261 so that a function can easily find the address of
9262 _GLOBAL_OFFSET_TABLE_. */
9263 BFD_ASSERT (htab->elf.hgot->root.u.def.value - 4
9264 < htab->elf.hgot->root.u.def.section->size);
9265 bfd_put_32 (output_bfd, 0x4e800021, p - 4);
9266 }
9267
9268 if (sdyn != NULL)
9269 {
9270 bfd_vma val = sdyn->output_section->vma + sdyn->output_offset;
9271 BFD_ASSERT (htab->elf.hgot->root.u.def.value
9272 < htab->elf.hgot->root.u.def.section->size);
9273 bfd_put_32 (output_bfd, val, p);
9274 }
9275 }
9276 else
9277 {
9278 info->callbacks->einfo (_("%P: %s not defined in linker created %s\n"),
9279 htab->elf.hgot->root.root.string,
9280 (htab->sgotplt != NULL
9281 ? htab->sgotplt->name : htab->got->name));
9282 bfd_set_error (bfd_error_bad_value);
9283 ret = FALSE;
9284 }
9285
9286 elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 4;
9287 }
9288
9289 /* Fill in the first entry in the VxWorks procedure linkage table. */
9290 if (splt && splt->size > 0)
9291 {
9292 /* Use the right PLT. */
9293 const bfd_vma *plt_entry = (info->shared
9294 ? ppc_elf_vxworks_pic_plt0_entry
9295 : ppc_elf_vxworks_plt0_entry);
9296
9297 if (!info->shared)
9298 {
9299 bfd_vma got_value = SYM_VAL (htab->elf.hgot);
9300
9301 bfd_put_32 (output_bfd, plt_entry[0] | PPC_HA (got_value),
9302 splt->contents + 0);
9303 bfd_put_32 (output_bfd, plt_entry[1] | PPC_LO (got_value),
9304 splt->contents + 4);
9305 }
9306 else
9307 {
9308 bfd_put_32 (output_bfd, plt_entry[0], splt->contents + 0);
9309 bfd_put_32 (output_bfd, plt_entry[1], splt->contents + 4);
9310 }
9311 bfd_put_32 (output_bfd, plt_entry[2], splt->contents + 8);
9312 bfd_put_32 (output_bfd, plt_entry[3], splt->contents + 12);
9313 bfd_put_32 (output_bfd, plt_entry[4], splt->contents + 16);
9314 bfd_put_32 (output_bfd, plt_entry[5], splt->contents + 20);
9315 bfd_put_32 (output_bfd, plt_entry[6], splt->contents + 24);
9316 bfd_put_32 (output_bfd, plt_entry[7], splt->contents + 28);
9317
9318 if (! info->shared)
9319 {
9320 Elf_Internal_Rela rela;
9321 bfd_byte *loc;
9322
9323 loc = htab->srelplt2->contents;
9324
9325 /* Output the @ha relocation for the first instruction. */
9326 rela.r_offset = (htab->plt->output_section->vma
9327 + htab->plt->output_offset
9328 + 2);
9329 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
9330 rela.r_addend = 0;
9331 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
9332 loc += sizeof (Elf32_External_Rela);
9333
9334 /* Output the @l relocation for the second instruction. */
9335 rela.r_offset = (htab->plt->output_section->vma
9336 + htab->plt->output_offset
9337 + 6);
9338 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
9339 rela.r_addend = 0;
9340 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
9341 loc += sizeof (Elf32_External_Rela);
9342
9343 /* Fix up the remaining relocations. They may have the wrong
9344 symbol index for _G_O_T_ or _P_L_T_ depending on the order
9345 in which symbols were output. */
9346 while (loc < htab->srelplt2->contents + htab->srelplt2->size)
9347 {
9348 Elf_Internal_Rela rel;
9349
9350 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
9351 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
9352 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
9353 loc += sizeof (Elf32_External_Rela);
9354
9355 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
9356 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
9357 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
9358 loc += sizeof (Elf32_External_Rela);
9359
9360 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
9361 rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_PPC_ADDR32);
9362 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
9363 loc += sizeof (Elf32_External_Rela);
9364 }
9365 }
9366 }
9367
9368 if (htab->glink != NULL
9369 && htab->glink->contents != NULL
9370 && htab->elf.dynamic_sections_created)
9371 {
9372 unsigned char *p;
9373 unsigned char *endp;
9374 bfd_vma res0;
9375 unsigned int i;
9376
9377 /*
9378 * PIC glink code is the following:
9379 *
9380 * # ith PLT code stub.
9381 * addis 11,30,(plt+(i-1)*4-got)@ha
9382 * lwz 11,(plt+(i-1)*4-got)@l(11)
9383 * mtctr 11
9384 * bctr
9385 *
9386 * # A table of branches, one for each plt entry.
9387 * # The idea is that the plt call stub loads ctr and r11 with these
9388 * # addresses, so (r11 - res_0) gives the plt index * 4.
9389 * res_0: b PLTresolve
9390 * res_1: b PLTresolve
9391 * .
9392 * # Some number of entries towards the end can be nops
9393 * res_n_m3: nop
9394 * res_n_m2: nop
9395 * res_n_m1:
9396 *
9397 * PLTresolve:
9398 * addis 11,11,(1f-res_0)@ha
9399 * mflr 0
9400 * bcl 20,31,1f
9401 * 1: addi 11,11,(1b-res_0)@l
9402 * mflr 12
9403 * mtlr 0
9404 * sub 11,11,12 # r11 = index * 4
9405 * addis 12,12,(got+4-1b)@ha
9406 * lwz 0,(got+4-1b)@l(12) # got[1] address of dl_runtime_resolve
9407 * lwz 12,(got+8-1b)@l(12) # got[2] contains the map address
9408 * mtctr 0
9409 * add 0,11,11
9410 * add 11,0,11 # r11 = index * 12 = reloc offset.
9411 * bctr
9412 */
9413 static const unsigned int pic_plt_resolve[] =
9414 {
9415 ADDIS_11_11,
9416 MFLR_0,
9417 BCL_20_31,
9418 ADDI_11_11,
9419 MFLR_12,
9420 MTLR_0,
9421 SUB_11_11_12,
9422 ADDIS_12_12,
9423 LWZ_0_12,
9424 LWZ_12_12,
9425 MTCTR_0,
9426 ADD_0_11_11,
9427 ADD_11_0_11,
9428 BCTR,
9429 NOP,
9430 NOP
9431 };
9432
9433 /*
9434 * Non-PIC glink code is a little simpler.
9435 *
9436 * # ith PLT code stub.
9437 * lis 11,(plt+(i-1)*4)@ha
9438 * lwz 11,(plt+(i-1)*4)@l(11)
9439 * mtctr 11
9440 * bctr
9441 *
9442 * The branch table is the same, then comes
9443 *
9444 * PLTresolve:
9445 * lis 12,(got+4)@ha
9446 * addis 11,11,(-res_0)@ha
9447 * lwz 0,(got+4)@l(12) # got[1] address of dl_runtime_resolve
9448 * addi 11,11,(-res_0)@l # r11 = index * 4
9449 * mtctr 0
9450 * add 0,11,11
9451 * lwz 12,(got+8)@l(12) # got[2] contains the map address
9452 * add 11,0,11 # r11 = index * 12 = reloc offset.
9453 * bctr
9454 */
9455 static const unsigned int plt_resolve[] =
9456 {
9457 LIS_12,
9458 ADDIS_11_11,
9459 LWZ_0_12,
9460 ADDI_11_11,
9461 MTCTR_0,
9462 ADD_0_11_11,
9463 LWZ_12_12,
9464 ADD_11_0_11,
9465 BCTR,
9466 NOP,
9467 NOP,
9468 NOP,
9469 NOP,
9470 NOP,
9471 NOP,
9472 NOP
9473 };
9474
9475 if (ARRAY_SIZE (pic_plt_resolve) != GLINK_PLTRESOLVE / 4)
9476 abort ();
9477 if (ARRAY_SIZE (plt_resolve) != GLINK_PLTRESOLVE / 4)
9478 abort ();
9479
9480 /* Build the branch table, one for each plt entry (less one),
9481 and perhaps some padding. */
9482 p = htab->glink->contents;
9483 p += htab->glink_pltresolve;
9484 endp = htab->glink->contents;
9485 endp += htab->glink->size - GLINK_PLTRESOLVE;
9486 while (p < endp - 8 * 4)
9487 {
9488 bfd_put_32 (output_bfd, B + endp - p, p);
9489 p += 4;
9490 }
9491 while (p < endp)
9492 {
9493 bfd_put_32 (output_bfd, NOP, p);
9494 p += 4;
9495 }
9496
9497 res0 = (htab->glink_pltresolve
9498 + htab->glink->output_section->vma
9499 + htab->glink->output_offset);
9500
9501 /* Last comes the PLTresolve stub. */
9502 if (info->shared)
9503 {
9504 bfd_vma bcl;
9505
9506 for (i = 0; i < ARRAY_SIZE (pic_plt_resolve); i++)
9507 {
9508 bfd_put_32 (output_bfd, pic_plt_resolve[i], p);
9509 p += 4;
9510 }
9511 p -= 4 * ARRAY_SIZE (pic_plt_resolve);
9512
9513 bcl = (htab->glink->size - GLINK_PLTRESOLVE + 3*4
9514 + htab->glink->output_section->vma
9515 + htab->glink->output_offset);
9516
9517 bfd_put_32 (output_bfd,
9518 ADDIS_11_11 + PPC_HA (bcl - res0), p + 0*4);
9519 bfd_put_32 (output_bfd,
9520 ADDI_11_11 + PPC_LO (bcl - res0), p + 3*4);
9521 bfd_put_32 (output_bfd,
9522 ADDIS_12_12 + PPC_HA (got + 4 - bcl), p + 7*4);
9523 if (PPC_HA (got + 4 - bcl) == PPC_HA (got + 8 - bcl))
9524 {
9525 bfd_put_32 (output_bfd,
9526 LWZ_0_12 + PPC_LO (got + 4 - bcl), p + 8*4);
9527 bfd_put_32 (output_bfd,
9528 LWZ_12_12 + PPC_LO (got + 8 - bcl), p + 9*4);
9529 }
9530 else
9531 {
9532 bfd_put_32 (output_bfd,
9533 LWZU_0_12 + PPC_LO (got + 4 - bcl), p + 8*4);
9534 bfd_put_32 (output_bfd,
9535 LWZ_12_12 + 4, p + 9*4);
9536 }
9537 }
9538 else
9539 {
9540 for (i = 0; i < ARRAY_SIZE (plt_resolve); i++)
9541 {
9542 bfd_put_32 (output_bfd, plt_resolve[i], p);
9543 p += 4;
9544 }
9545 p -= 4 * ARRAY_SIZE (plt_resolve);
9546
9547 bfd_put_32 (output_bfd,
9548 LIS_12 + PPC_HA (got + 4), p + 0*4);
9549 bfd_put_32 (output_bfd,
9550 ADDIS_11_11 + PPC_HA (-res0), p + 1*4);
9551 bfd_put_32 (output_bfd,
9552 ADDI_11_11 + PPC_LO (-res0), p + 3*4);
9553 if (PPC_HA (got + 4) == PPC_HA (got + 8))
9554 {
9555 bfd_put_32 (output_bfd,
9556 LWZ_0_12 + PPC_LO (got + 4), p + 2*4);
9557 bfd_put_32 (output_bfd,
9558 LWZ_12_12 + PPC_LO (got + 8), p + 6*4);
9559 }
9560 else
9561 {
9562 bfd_put_32 (output_bfd,
9563 LWZU_0_12 + PPC_LO (got + 4), p + 2*4);
9564 bfd_put_32 (output_bfd,
9565 LWZ_12_12 + 4, p + 6*4);
9566 }
9567 }
9568 }
9569
9570 if (htab->glink_eh_frame != NULL
9571 && htab->glink_eh_frame->contents != NULL)
9572 {
9573 unsigned char *p = htab->glink_eh_frame->contents;
9574 bfd_vma val;
9575
9576 memcpy (p, glink_eh_frame_cie, sizeof (glink_eh_frame_cie));
9577 /* CIE length (rewrite in case little-endian). */
9578 bfd_put_32 (htab->elf.dynobj, sizeof (glink_eh_frame_cie) - 4, p);
9579 p += sizeof (glink_eh_frame_cie);
9580 /* FDE length. */
9581 val = htab->glink_eh_frame->size - 4 - sizeof (glink_eh_frame_cie);
9582 bfd_put_32 (htab->elf.dynobj, val, p);
9583 p += 4;
9584 /* CIE pointer. */
9585 val = p - htab->glink_eh_frame->contents;
9586 bfd_put_32 (htab->elf.dynobj, val, p);
9587 p += 4;
9588 /* Offset to .glink. */
9589 val = (htab->glink->output_section->vma
9590 + htab->glink->output_offset);
9591 val -= (htab->glink_eh_frame->output_section->vma
9592 + htab->glink_eh_frame->output_offset);
9593 val -= p - htab->glink_eh_frame->contents;
9594 bfd_put_32 (htab->elf.dynobj, val, p);
9595 p += 4;
9596 /* .glink size. */
9597 bfd_put_32 (htab->elf.dynobj, htab->glink->size, p);
9598 p += 4;
9599 /* Augmentation. */
9600 p += 1;
9601
9602 if (info->shared
9603 && htab->elf.dynamic_sections_created)
9604 {
9605 bfd_vma adv = (htab->glink->size - GLINK_PLTRESOLVE + 8) >> 2;
9606 if (adv < 64)
9607 *p++ = DW_CFA_advance_loc + adv;
9608 else if (adv < 256)
9609 {
9610 *p++ = DW_CFA_advance_loc1;
9611 *p++ = adv;
9612 }
9613 else if (adv < 65536)
9614 {
9615 *p++ = DW_CFA_advance_loc2;
9616 bfd_put_16 (htab->elf.dynobj, adv, p);
9617 p += 2;
9618 }
9619 else
9620 {
9621 *p++ = DW_CFA_advance_loc4;
9622 bfd_put_32 (htab->elf.dynobj, adv, p);
9623 p += 4;
9624 }
9625 *p++ = DW_CFA_register;
9626 *p++ = 65;
9627 p++;
9628 *p++ = DW_CFA_advance_loc + 4;
9629 *p++ = DW_CFA_restore_extended;
9630 *p++ = 65;
9631 }
9632 BFD_ASSERT ((bfd_vma) ((p + 3 - htab->glink_eh_frame->contents) & -4)
9633 == htab->glink_eh_frame->size);
9634
9635 if (htab->glink_eh_frame->sec_info_type == SEC_INFO_TYPE_EH_FRAME
9636 && !_bfd_elf_write_section_eh_frame (output_bfd, info,
9637 htab->glink_eh_frame,
9638 htab->glink_eh_frame->contents))
9639 return FALSE;
9640 }
9641
9642 return ret;
9643 }
9644 \f
9645 #define TARGET_LITTLE_SYM bfd_elf32_powerpcle_vec
9646 #define TARGET_LITTLE_NAME "elf32-powerpcle"
9647 #define TARGET_BIG_SYM bfd_elf32_powerpc_vec
9648 #define TARGET_BIG_NAME "elf32-powerpc"
9649 #define ELF_ARCH bfd_arch_powerpc
9650 #define ELF_TARGET_ID PPC32_ELF_DATA
9651 #define ELF_MACHINE_CODE EM_PPC
9652 #ifdef __QNXTARGET__
9653 #define ELF_MAXPAGESIZE 0x1000
9654 #else
9655 #define ELF_MAXPAGESIZE 0x10000
9656 #endif
9657 #define ELF_MINPAGESIZE 0x1000
9658 #define ELF_COMMONPAGESIZE 0x1000
9659 #define elf_info_to_howto ppc_elf_info_to_howto
9660
9661 #ifdef EM_CYGNUS_POWERPC
9662 #define ELF_MACHINE_ALT1 EM_CYGNUS_POWERPC
9663 #endif
9664
9665 #ifdef EM_PPC_OLD
9666 #define ELF_MACHINE_ALT2 EM_PPC_OLD
9667 #endif
9668
9669 #define elf_backend_plt_not_loaded 1
9670 #define elf_backend_can_gc_sections 1
9671 #define elf_backend_can_refcount 1
9672 #define elf_backend_rela_normal 1
9673
9674 #define bfd_elf32_mkobject ppc_elf_mkobject
9675 #define bfd_elf32_bfd_merge_private_bfd_data ppc_elf_merge_private_bfd_data
9676 #define bfd_elf32_bfd_relax_section ppc_elf_relax_section
9677 #define bfd_elf32_bfd_reloc_type_lookup ppc_elf_reloc_type_lookup
9678 #define bfd_elf32_bfd_reloc_name_lookup ppc_elf_reloc_name_lookup
9679 #define bfd_elf32_bfd_set_private_flags ppc_elf_set_private_flags
9680 #define bfd_elf32_bfd_link_hash_table_create ppc_elf_link_hash_table_create
9681 #define bfd_elf32_get_synthetic_symtab ppc_elf_get_synthetic_symtab
9682
9683 #define elf_backend_object_p ppc_elf_object_p
9684 #define elf_backend_gc_mark_hook ppc_elf_gc_mark_hook
9685 #define elf_backend_gc_sweep_hook ppc_elf_gc_sweep_hook
9686 #define elf_backend_section_from_shdr ppc_elf_section_from_shdr
9687 #define elf_backend_relocate_section ppc_elf_relocate_section
9688 #define elf_backend_create_dynamic_sections ppc_elf_create_dynamic_sections
9689 #define elf_backend_check_relocs ppc_elf_check_relocs
9690 #define elf_backend_copy_indirect_symbol ppc_elf_copy_indirect_symbol
9691 #define elf_backend_adjust_dynamic_symbol ppc_elf_adjust_dynamic_symbol
9692 #define elf_backend_add_symbol_hook ppc_elf_add_symbol_hook
9693 #define elf_backend_size_dynamic_sections ppc_elf_size_dynamic_sections
9694 #define elf_backend_hash_symbol ppc_elf_hash_symbol
9695 #define elf_backend_finish_dynamic_symbol ppc_elf_finish_dynamic_symbol
9696 #define elf_backend_finish_dynamic_sections ppc_elf_finish_dynamic_sections
9697 #define elf_backend_fake_sections ppc_elf_fake_sections
9698 #define elf_backend_additional_program_headers ppc_elf_additional_program_headers
9699 #define elf_backend_modify_segment_map ppc_elf_modify_segment_map
9700 #define elf_backend_grok_prstatus ppc_elf_grok_prstatus
9701 #define elf_backend_grok_psinfo ppc_elf_grok_psinfo
9702 #define elf_backend_write_core_note ppc_elf_write_core_note
9703 #define elf_backend_reloc_type_class ppc_elf_reloc_type_class
9704 #define elf_backend_begin_write_processing ppc_elf_begin_write_processing
9705 #define elf_backend_final_write_processing ppc_elf_final_write_processing
9706 #define elf_backend_write_section ppc_elf_write_section
9707 #define elf_backend_get_sec_type_attr ppc_elf_get_sec_type_attr
9708 #define elf_backend_plt_sym_val ppc_elf_plt_sym_val
9709 #define elf_backend_action_discarded ppc_elf_action_discarded
9710 #define elf_backend_init_index_section _bfd_elf_init_1_index_section
9711 #define elf_backend_post_process_headers _bfd_elf_set_osabi
9712 #define elf_backend_lookup_section_flags_hook ppc_elf_lookup_section_flags
9713 #define elf_backend_section_flags ppc_elf_section_flags
9714 #define elf_backend_section_processing ppc_elf_section_processing
9715
9716 #include "elf32-target.h"
9717
9718 /* FreeBSD Target */
9719
9720 #undef TARGET_LITTLE_SYM
9721 #undef TARGET_LITTLE_NAME
9722
9723 #undef TARGET_BIG_SYM
9724 #define TARGET_BIG_SYM bfd_elf32_powerpc_freebsd_vec
9725 #undef TARGET_BIG_NAME
9726 #define TARGET_BIG_NAME "elf32-powerpc-freebsd"
9727
9728 #undef ELF_OSABI
9729 #define ELF_OSABI ELFOSABI_FREEBSD
9730
9731 #undef elf32_bed
9732 #define elf32_bed elf32_powerpc_fbsd_bed
9733
9734 #include "elf32-target.h"
9735
9736 /* VxWorks Target */
9737
9738 #undef TARGET_LITTLE_SYM
9739 #undef TARGET_LITTLE_NAME
9740
9741 #undef TARGET_BIG_SYM
9742 #define TARGET_BIG_SYM bfd_elf32_powerpc_vxworks_vec
9743 #undef TARGET_BIG_NAME
9744 #define TARGET_BIG_NAME "elf32-powerpc-vxworks"
9745
9746 #undef ELF_OSABI
9747
9748 /* VxWorks uses the elf default section flags for .plt. */
9749 static const struct bfd_elf_special_section *
9750 ppc_elf_vxworks_get_sec_type_attr (bfd *abfd ATTRIBUTE_UNUSED, asection *sec)
9751 {
9752 if (sec->name == NULL)
9753 return NULL;
9754
9755 if (strcmp (sec->name, ".plt") == 0)
9756 return _bfd_elf_get_sec_type_attr (abfd, sec);
9757
9758 return ppc_elf_get_sec_type_attr (abfd, sec);
9759 }
9760
9761 /* Like ppc_elf_link_hash_table_create, but overrides
9762 appropriately for VxWorks. */
9763 static struct bfd_link_hash_table *
9764 ppc_elf_vxworks_link_hash_table_create (bfd *abfd)
9765 {
9766 struct bfd_link_hash_table *ret;
9767
9768 ret = ppc_elf_link_hash_table_create (abfd);
9769 if (ret)
9770 {
9771 struct ppc_elf_link_hash_table *htab
9772 = (struct ppc_elf_link_hash_table *)ret;
9773 htab->is_vxworks = 1;
9774 htab->plt_type = PLT_VXWORKS;
9775 htab->plt_entry_size = VXWORKS_PLT_ENTRY_SIZE;
9776 htab->plt_slot_size = VXWORKS_PLT_ENTRY_SIZE;
9777 htab->plt_initial_entry_size = VXWORKS_PLT_INITIAL_ENTRY_SIZE;
9778 }
9779 return ret;
9780 }
9781
9782 /* Tweak magic VxWorks symbols as they are loaded. */
9783 static bfd_boolean
9784 ppc_elf_vxworks_add_symbol_hook (bfd *abfd,
9785 struct bfd_link_info *info,
9786 Elf_Internal_Sym *sym,
9787 const char **namep ATTRIBUTE_UNUSED,
9788 flagword *flagsp ATTRIBUTE_UNUSED,
9789 asection **secp,
9790 bfd_vma *valp)
9791 {
9792 if (!elf_vxworks_add_symbol_hook(abfd, info, sym,namep, flagsp, secp,
9793 valp))
9794 return FALSE;
9795
9796 return ppc_elf_add_symbol_hook(abfd, info, sym,namep, flagsp, secp, valp);
9797 }
9798
9799 static void
9800 ppc_elf_vxworks_final_write_processing (bfd *abfd, bfd_boolean linker)
9801 {
9802 ppc_elf_final_write_processing(abfd, linker);
9803 elf_vxworks_final_write_processing(abfd, linker);
9804 }
9805
9806 /* On VxWorks, we emit relocations against _PROCEDURE_LINKAGE_TABLE_, so
9807 define it. */
9808 #undef elf_backend_want_plt_sym
9809 #define elf_backend_want_plt_sym 1
9810 #undef elf_backend_want_got_plt
9811 #define elf_backend_want_got_plt 1
9812 #undef elf_backend_got_symbol_offset
9813 #define elf_backend_got_symbol_offset 0
9814 #undef elf_backend_plt_not_loaded
9815 #define elf_backend_plt_not_loaded 0
9816 #undef elf_backend_plt_readonly
9817 #define elf_backend_plt_readonly 1
9818 #undef elf_backend_got_header_size
9819 #define elf_backend_got_header_size 12
9820
9821 #undef bfd_elf32_get_synthetic_symtab
9822
9823 #undef bfd_elf32_bfd_link_hash_table_create
9824 #define bfd_elf32_bfd_link_hash_table_create \
9825 ppc_elf_vxworks_link_hash_table_create
9826 #undef elf_backend_add_symbol_hook
9827 #define elf_backend_add_symbol_hook \
9828 ppc_elf_vxworks_add_symbol_hook
9829 #undef elf_backend_link_output_symbol_hook
9830 #define elf_backend_link_output_symbol_hook \
9831 elf_vxworks_link_output_symbol_hook
9832 #undef elf_backend_final_write_processing
9833 #define elf_backend_final_write_processing \
9834 ppc_elf_vxworks_final_write_processing
9835 #undef elf_backend_get_sec_type_attr
9836 #define elf_backend_get_sec_type_attr \
9837 ppc_elf_vxworks_get_sec_type_attr
9838 #undef elf_backend_emit_relocs
9839 #define elf_backend_emit_relocs \
9840 elf_vxworks_emit_relocs
9841
9842 #undef elf32_bed
9843 #define elf32_bed ppc_elf_vxworks_bed
9844 #undef elf_backend_post_process_headers
9845
9846 #include "elf32-target.h"