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Replace DT_PPC_TLSOPT with DT_PPC_OPT.
[thirdparty/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 #include "elf-linux-psinfo.h"
41
42 typedef enum split16_format_type
43 {
44 split16a_type = 0,
45 split16d_type
46 }
47 split16_format_type;
48
49 /* RELA relocations are used here. */
50
51 static bfd_reloc_status_type ppc_elf_addr16_ha_reloc
52 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
53 static bfd_reloc_status_type ppc_elf_unhandled_reloc
54 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
55 static void ppc_elf_vle_split16
56 (bfd *, bfd_byte *, bfd_vma, bfd_vma, split16_format_type);
57
58 /* Branch prediction bit for branch taken relocs. */
59 #define BRANCH_PREDICT_BIT 0x200000
60 /* Mask to set RA in memory instructions. */
61 #define RA_REGISTER_MASK 0x001f0000
62 /* Value to shift register by to insert RA. */
63 #define RA_REGISTER_SHIFT 16
64
65 /* The name of the dynamic interpreter. This is put in the .interp
66 section. */
67 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
68
69 /* For old-style PLT. */
70 /* The number of single-slot PLT entries (the rest use two slots). */
71 #define PLT_NUM_SINGLE_ENTRIES 8192
72
73 /* For new-style .glink and .plt. */
74 #define GLINK_PLTRESOLVE 16*4
75 #define GLINK_ENTRY_SIZE 4*4
76 #define TLS_GET_ADDR_GLINK_SIZE 12*4
77
78 /* VxWorks uses its own plt layout, filled in by the static linker. */
79
80 /* The standard VxWorks PLT entry. */
81 #define VXWORKS_PLT_ENTRY_SIZE 32
82 static const bfd_vma ppc_elf_vxworks_plt_entry
83 [VXWORKS_PLT_ENTRY_SIZE / 4] =
84 {
85 0x3d800000, /* lis r12,0 */
86 0x818c0000, /* lwz r12,0(r12) */
87 0x7d8903a6, /* mtctr r12 */
88 0x4e800420, /* bctr */
89 0x39600000, /* li r11,0 */
90 0x48000000, /* b 14 <.PLT0resolve+0x4> */
91 0x60000000, /* nop */
92 0x60000000, /* nop */
93 };
94 static const bfd_vma ppc_elf_vxworks_pic_plt_entry
95 [VXWORKS_PLT_ENTRY_SIZE / 4] =
96 {
97 0x3d9e0000, /* addis r12,r30,0 */
98 0x818c0000, /* lwz r12,0(r12) */
99 0x7d8903a6, /* mtctr r12 */
100 0x4e800420, /* bctr */
101 0x39600000, /* li r11,0 */
102 0x48000000, /* b 14 <.PLT0resolve+0x4> 14: R_PPC_REL24 .PLTresolve */
103 0x60000000, /* nop */
104 0x60000000, /* nop */
105 };
106
107 /* The initial VxWorks PLT entry. */
108 #define VXWORKS_PLT_INITIAL_ENTRY_SIZE 32
109 static const bfd_vma ppc_elf_vxworks_plt0_entry
110 [VXWORKS_PLT_INITIAL_ENTRY_SIZE / 4] =
111 {
112 0x3d800000, /* lis r12,0 */
113 0x398c0000, /* addi r12,r12,0 */
114 0x800c0008, /* lwz r0,8(r12) */
115 0x7c0903a6, /* mtctr r0 */
116 0x818c0004, /* lwz r12,4(r12) */
117 0x4e800420, /* bctr */
118 0x60000000, /* nop */
119 0x60000000, /* nop */
120 };
121 static const bfd_vma ppc_elf_vxworks_pic_plt0_entry
122 [VXWORKS_PLT_INITIAL_ENTRY_SIZE / 4] =
123 {
124 0x819e0008, /* lwz r12,8(r30) */
125 0x7d8903a6, /* mtctr r12 */
126 0x819e0004, /* lwz r12,4(r30) */
127 0x4e800420, /* bctr */
128 0x60000000, /* nop */
129 0x60000000, /* nop */
130 0x60000000, /* nop */
131 0x60000000, /* nop */
132 };
133
134 /* For executables, we have some additional relocations in
135 .rela.plt.unloaded, for the kernel loader. */
136
137 /* The number of non-JMP_SLOT relocations per PLT0 slot. */
138 #define VXWORKS_PLT_NON_JMP_SLOT_RELOCS 3
139 /* The number of relocations in the PLTResolve slot. */
140 #define VXWORKS_PLTRESOLVE_RELOCS 2
141 /* The number of relocations in the PLTResolve slot when when creating
142 a shared library. */
143 #define VXWORKS_PLTRESOLVE_RELOCS_SHLIB 0
144
145 /* Some instructions. */
146 #define ADDIS_11_11 0x3d6b0000
147 #define ADDIS_11_30 0x3d7e0000
148 #define ADDIS_12_12 0x3d8c0000
149 #define ADDI_11_11 0x396b0000
150 #define ADD_0_11_11 0x7c0b5a14
151 #define ADD_3_12_2 0x7c6c1214
152 #define ADD_11_0_11 0x7d605a14
153 #define B 0x48000000
154 #define BCL_20_31 0x429f0005
155 #define BCTR 0x4e800420
156 #define BEQLR 0x4d820020
157 #define CMPWI_11_0 0x2c0b0000
158 #define LIS_11 0x3d600000
159 #define LIS_12 0x3d800000
160 #define LWZU_0_12 0x840c0000
161 #define LWZ_0_12 0x800c0000
162 #define LWZ_11_3 0x81630000
163 #define LWZ_11_11 0x816b0000
164 #define LWZ_11_30 0x817e0000
165 #define LWZ_12_3 0x81830000
166 #define LWZ_12_12 0x818c0000
167 #define MR_0_3 0x7c601b78
168 #define MR_3_0 0x7c030378
169 #define MFLR_0 0x7c0802a6
170 #define MFLR_12 0x7d8802a6
171 #define MTCTR_0 0x7c0903a6
172 #define MTCTR_11 0x7d6903a6
173 #define MTLR_0 0x7c0803a6
174 #define NOP 0x60000000
175 #define SUB_11_11_12 0x7d6c5850
176
177 /* Offset of tp and dtp pointers from start of TLS block. */
178 #define TP_OFFSET 0x7000
179 #define DTP_OFFSET 0x8000
180
181 /* The value of a defined global symbol. */
182 #define SYM_VAL(SYM) \
183 ((SYM)->root.u.def.section->output_section->vma \
184 + (SYM)->root.u.def.section->output_offset \
185 + (SYM)->root.u.def.value)
186 \f
187 static reloc_howto_type *ppc_elf_howto_table[R_PPC_max];
188
189 static reloc_howto_type ppc_elf_howto_raw[] = {
190 /* This reloc does nothing. */
191 HOWTO (R_PPC_NONE, /* type */
192 0, /* rightshift */
193 2, /* size (0 = byte, 1 = short, 2 = long) */
194 32, /* bitsize */
195 FALSE, /* pc_relative */
196 0, /* bitpos */
197 complain_overflow_bitfield, /* complain_on_overflow */
198 bfd_elf_generic_reloc, /* special_function */
199 "R_PPC_NONE", /* name */
200 FALSE, /* partial_inplace */
201 0, /* src_mask */
202 0, /* dst_mask */
203 FALSE), /* pcrel_offset */
204
205 /* A standard 32 bit relocation. */
206 HOWTO (R_PPC_ADDR32, /* type */
207 0, /* rightshift */
208 2, /* size (0 = byte, 1 = short, 2 = long) */
209 32, /* bitsize */
210 FALSE, /* pc_relative */
211 0, /* bitpos */
212 complain_overflow_bitfield, /* complain_on_overflow */
213 bfd_elf_generic_reloc, /* special_function */
214 "R_PPC_ADDR32", /* name */
215 FALSE, /* partial_inplace */
216 0, /* src_mask */
217 0xffffffff, /* dst_mask */
218 FALSE), /* pcrel_offset */
219
220 /* An absolute 26 bit branch; the lower two bits must be zero.
221 FIXME: we don't check that, we just clear them. */
222 HOWTO (R_PPC_ADDR24, /* type */
223 0, /* rightshift */
224 2, /* size (0 = byte, 1 = short, 2 = long) */
225 26, /* bitsize */
226 FALSE, /* pc_relative */
227 0, /* bitpos */
228 complain_overflow_bitfield, /* complain_on_overflow */
229 bfd_elf_generic_reloc, /* special_function */
230 "R_PPC_ADDR24", /* name */
231 FALSE, /* partial_inplace */
232 0, /* src_mask */
233 0x3fffffc, /* dst_mask */
234 FALSE), /* pcrel_offset */
235
236 /* A standard 16 bit relocation. */
237 HOWTO (R_PPC_ADDR16, /* type */
238 0, /* rightshift */
239 1, /* size (0 = byte, 1 = short, 2 = long) */
240 16, /* bitsize */
241 FALSE, /* pc_relative */
242 0, /* bitpos */
243 complain_overflow_bitfield, /* complain_on_overflow */
244 bfd_elf_generic_reloc, /* special_function */
245 "R_PPC_ADDR16", /* name */
246 FALSE, /* partial_inplace */
247 0, /* src_mask */
248 0xffff, /* dst_mask */
249 FALSE), /* pcrel_offset */
250
251 /* A 16 bit relocation without overflow. */
252 HOWTO (R_PPC_ADDR16_LO, /* type */
253 0, /* rightshift */
254 1, /* size (0 = byte, 1 = short, 2 = long) */
255 16, /* bitsize */
256 FALSE, /* pc_relative */
257 0, /* bitpos */
258 complain_overflow_dont,/* complain_on_overflow */
259 bfd_elf_generic_reloc, /* special_function */
260 "R_PPC_ADDR16_LO", /* name */
261 FALSE, /* partial_inplace */
262 0, /* src_mask */
263 0xffff, /* dst_mask */
264 FALSE), /* pcrel_offset */
265
266 /* The high order 16 bits of an address. */
267 HOWTO (R_PPC_ADDR16_HI, /* type */
268 16, /* rightshift */
269 1, /* size (0 = byte, 1 = short, 2 = long) */
270 16, /* bitsize */
271 FALSE, /* pc_relative */
272 0, /* bitpos */
273 complain_overflow_dont, /* complain_on_overflow */
274 bfd_elf_generic_reloc, /* special_function */
275 "R_PPC_ADDR16_HI", /* name */
276 FALSE, /* partial_inplace */
277 0, /* src_mask */
278 0xffff, /* dst_mask */
279 FALSE), /* pcrel_offset */
280
281 /* The high order 16 bits of an address, plus 1 if the contents of
282 the low 16 bits, treated as a signed number, is negative. */
283 HOWTO (R_PPC_ADDR16_HA, /* type */
284 16, /* rightshift */
285 1, /* size (0 = byte, 1 = short, 2 = long) */
286 16, /* bitsize */
287 FALSE, /* pc_relative */
288 0, /* bitpos */
289 complain_overflow_dont, /* complain_on_overflow */
290 ppc_elf_addr16_ha_reloc, /* special_function */
291 "R_PPC_ADDR16_HA", /* name */
292 FALSE, /* partial_inplace */
293 0, /* src_mask */
294 0xffff, /* dst_mask */
295 FALSE), /* pcrel_offset */
296
297 /* An absolute 16 bit branch; the lower two bits must be zero.
298 FIXME: we don't check that, we just clear them. */
299 HOWTO (R_PPC_ADDR14, /* type */
300 0, /* rightshift */
301 2, /* size (0 = byte, 1 = short, 2 = long) */
302 16, /* bitsize */
303 FALSE, /* pc_relative */
304 0, /* bitpos */
305 complain_overflow_bitfield, /* complain_on_overflow */
306 bfd_elf_generic_reloc, /* special_function */
307 "R_PPC_ADDR14", /* name */
308 FALSE, /* partial_inplace */
309 0, /* src_mask */
310 0xfffc, /* dst_mask */
311 FALSE), /* pcrel_offset */
312
313 /* An absolute 16 bit branch, for which bit 10 should be set to
314 indicate that the branch is expected to be taken. The lower two
315 bits must be zero. */
316 HOWTO (R_PPC_ADDR14_BRTAKEN, /* type */
317 0, /* rightshift */
318 2, /* size (0 = byte, 1 = short, 2 = long) */
319 16, /* bitsize */
320 FALSE, /* pc_relative */
321 0, /* bitpos */
322 complain_overflow_bitfield, /* complain_on_overflow */
323 bfd_elf_generic_reloc, /* special_function */
324 "R_PPC_ADDR14_BRTAKEN",/* name */
325 FALSE, /* partial_inplace */
326 0, /* src_mask */
327 0xfffc, /* dst_mask */
328 FALSE), /* pcrel_offset */
329
330 /* An absolute 16 bit branch, for which bit 10 should be set to
331 indicate that the branch is not expected to be taken. The lower
332 two bits must be zero. */
333 HOWTO (R_PPC_ADDR14_BRNTAKEN, /* type */
334 0, /* rightshift */
335 2, /* size (0 = byte, 1 = short, 2 = long) */
336 16, /* bitsize */
337 FALSE, /* pc_relative */
338 0, /* bitpos */
339 complain_overflow_bitfield, /* complain_on_overflow */
340 bfd_elf_generic_reloc, /* special_function */
341 "R_PPC_ADDR14_BRNTAKEN",/* name */
342 FALSE, /* partial_inplace */
343 0, /* src_mask */
344 0xfffc, /* dst_mask */
345 FALSE), /* pcrel_offset */
346
347 /* A relative 26 bit branch; the lower two bits must be zero. */
348 HOWTO (R_PPC_REL24, /* type */
349 0, /* rightshift */
350 2, /* size (0 = byte, 1 = short, 2 = long) */
351 26, /* bitsize */
352 TRUE, /* pc_relative */
353 0, /* bitpos */
354 complain_overflow_signed, /* complain_on_overflow */
355 bfd_elf_generic_reloc, /* special_function */
356 "R_PPC_REL24", /* name */
357 FALSE, /* partial_inplace */
358 0, /* src_mask */
359 0x3fffffc, /* dst_mask */
360 TRUE), /* pcrel_offset */
361
362 /* A relative 16 bit branch; the lower two bits must be zero. */
363 HOWTO (R_PPC_REL14, /* type */
364 0, /* rightshift */
365 2, /* size (0 = byte, 1 = short, 2 = long) */
366 16, /* bitsize */
367 TRUE, /* pc_relative */
368 0, /* bitpos */
369 complain_overflow_signed, /* complain_on_overflow */
370 bfd_elf_generic_reloc, /* special_function */
371 "R_PPC_REL14", /* name */
372 FALSE, /* partial_inplace */
373 0, /* src_mask */
374 0xfffc, /* dst_mask */
375 TRUE), /* pcrel_offset */
376
377 /* A relative 16 bit branch. Bit 10 should be set to indicate that
378 the branch is expected to be taken. The lower two bits must be
379 zero. */
380 HOWTO (R_PPC_REL14_BRTAKEN, /* type */
381 0, /* rightshift */
382 2, /* size (0 = byte, 1 = short, 2 = long) */
383 16, /* bitsize */
384 TRUE, /* pc_relative */
385 0, /* bitpos */
386 complain_overflow_signed, /* complain_on_overflow */
387 bfd_elf_generic_reloc, /* special_function */
388 "R_PPC_REL14_BRTAKEN", /* name */
389 FALSE, /* partial_inplace */
390 0, /* src_mask */
391 0xfffc, /* dst_mask */
392 TRUE), /* pcrel_offset */
393
394 /* A relative 16 bit branch. Bit 10 should be set to indicate that
395 the branch is not expected to be taken. The lower two bits must
396 be zero. */
397 HOWTO (R_PPC_REL14_BRNTAKEN, /* type */
398 0, /* rightshift */
399 2, /* size (0 = byte, 1 = short, 2 = long) */
400 16, /* bitsize */
401 TRUE, /* pc_relative */
402 0, /* bitpos */
403 complain_overflow_signed, /* complain_on_overflow */
404 bfd_elf_generic_reloc, /* special_function */
405 "R_PPC_REL14_BRNTAKEN",/* name */
406 FALSE, /* partial_inplace */
407 0, /* src_mask */
408 0xfffc, /* dst_mask */
409 TRUE), /* pcrel_offset */
410
411 /* Like R_PPC_ADDR16, but referring to the GOT table entry for the
412 symbol. */
413 HOWTO (R_PPC_GOT16, /* type */
414 0, /* rightshift */
415 1, /* size (0 = byte, 1 = short, 2 = long) */
416 16, /* bitsize */
417 FALSE, /* pc_relative */
418 0, /* bitpos */
419 complain_overflow_signed, /* complain_on_overflow */
420 bfd_elf_generic_reloc, /* special_function */
421 "R_PPC_GOT16", /* name */
422 FALSE, /* partial_inplace */
423 0, /* src_mask */
424 0xffff, /* dst_mask */
425 FALSE), /* pcrel_offset */
426
427 /* Like R_PPC_ADDR16_LO, but referring to the GOT table entry for
428 the symbol. */
429 HOWTO (R_PPC_GOT16_LO, /* type */
430 0, /* rightshift */
431 1, /* size (0 = byte, 1 = short, 2 = long) */
432 16, /* bitsize */
433 FALSE, /* pc_relative */
434 0, /* bitpos */
435 complain_overflow_dont, /* complain_on_overflow */
436 bfd_elf_generic_reloc, /* special_function */
437 "R_PPC_GOT16_LO", /* name */
438 FALSE, /* partial_inplace */
439 0, /* src_mask */
440 0xffff, /* dst_mask */
441 FALSE), /* pcrel_offset */
442
443 /* Like R_PPC_ADDR16_HI, but referring to the GOT table entry for
444 the symbol. */
445 HOWTO (R_PPC_GOT16_HI, /* type */
446 16, /* rightshift */
447 1, /* size (0 = byte, 1 = short, 2 = long) */
448 16, /* bitsize */
449 FALSE, /* pc_relative */
450 0, /* bitpos */
451 complain_overflow_bitfield, /* complain_on_overflow */
452 bfd_elf_generic_reloc, /* special_function */
453 "R_PPC_GOT16_HI", /* name */
454 FALSE, /* partial_inplace */
455 0, /* src_mask */
456 0xffff, /* dst_mask */
457 FALSE), /* pcrel_offset */
458
459 /* Like R_PPC_ADDR16_HA, but referring to the GOT table entry for
460 the symbol. */
461 HOWTO (R_PPC_GOT16_HA, /* type */
462 16, /* rightshift */
463 1, /* size (0 = byte, 1 = short, 2 = long) */
464 16, /* bitsize */
465 FALSE, /* pc_relative */
466 0, /* bitpos */
467 complain_overflow_bitfield, /* complain_on_overflow */
468 ppc_elf_addr16_ha_reloc, /* special_function */
469 "R_PPC_GOT16_HA", /* name */
470 FALSE, /* partial_inplace */
471 0, /* src_mask */
472 0xffff, /* dst_mask */
473 FALSE), /* pcrel_offset */
474
475 /* Like R_PPC_REL24, but referring to the procedure linkage table
476 entry for the symbol. */
477 HOWTO (R_PPC_PLTREL24, /* type */
478 0, /* rightshift */
479 2, /* size (0 = byte, 1 = short, 2 = long) */
480 26, /* bitsize */
481 TRUE, /* pc_relative */
482 0, /* bitpos */
483 complain_overflow_signed, /* complain_on_overflow */
484 bfd_elf_generic_reloc, /* special_function */
485 "R_PPC_PLTREL24", /* name */
486 FALSE, /* partial_inplace */
487 0, /* src_mask */
488 0x3fffffc, /* dst_mask */
489 TRUE), /* pcrel_offset */
490
491 /* This is used only by the dynamic linker. The symbol should exist
492 both in the object being run and in some shared library. The
493 dynamic linker copies the data addressed by the symbol from the
494 shared library into the object, because the object being
495 run has to have the data at some particular address. */
496 HOWTO (R_PPC_COPY, /* type */
497 0, /* rightshift */
498 2, /* size (0 = byte, 1 = short, 2 = long) */
499 32, /* bitsize */
500 FALSE, /* pc_relative */
501 0, /* bitpos */
502 complain_overflow_bitfield, /* complain_on_overflow */
503 bfd_elf_generic_reloc, /* special_function */
504 "R_PPC_COPY", /* name */
505 FALSE, /* partial_inplace */
506 0, /* src_mask */
507 0, /* dst_mask */
508 FALSE), /* pcrel_offset */
509
510 /* Like R_PPC_ADDR32, but used when setting global offset table
511 entries. */
512 HOWTO (R_PPC_GLOB_DAT, /* type */
513 0, /* rightshift */
514 2, /* size (0 = byte, 1 = short, 2 = long) */
515 32, /* bitsize */
516 FALSE, /* pc_relative */
517 0, /* bitpos */
518 complain_overflow_bitfield, /* complain_on_overflow */
519 bfd_elf_generic_reloc, /* special_function */
520 "R_PPC_GLOB_DAT", /* name */
521 FALSE, /* partial_inplace */
522 0, /* src_mask */
523 0xffffffff, /* dst_mask */
524 FALSE), /* pcrel_offset */
525
526 /* Marks a procedure linkage table entry for a symbol. */
527 HOWTO (R_PPC_JMP_SLOT, /* type */
528 0, /* rightshift */
529 2, /* size (0 = byte, 1 = short, 2 = long) */
530 32, /* bitsize */
531 FALSE, /* pc_relative */
532 0, /* bitpos */
533 complain_overflow_bitfield, /* complain_on_overflow */
534 bfd_elf_generic_reloc, /* special_function */
535 "R_PPC_JMP_SLOT", /* name */
536 FALSE, /* partial_inplace */
537 0, /* src_mask */
538 0, /* dst_mask */
539 FALSE), /* pcrel_offset */
540
541 /* Used only by the dynamic linker. When the object is run, this
542 longword is set to the load address of the object, plus the
543 addend. */
544 HOWTO (R_PPC_RELATIVE, /* type */
545 0, /* rightshift */
546 2, /* size (0 = byte, 1 = short, 2 = long) */
547 32, /* bitsize */
548 FALSE, /* pc_relative */
549 0, /* bitpos */
550 complain_overflow_bitfield, /* complain_on_overflow */
551 bfd_elf_generic_reloc, /* special_function */
552 "R_PPC_RELATIVE", /* name */
553 FALSE, /* partial_inplace */
554 0, /* src_mask */
555 0xffffffff, /* dst_mask */
556 FALSE), /* pcrel_offset */
557
558 /* Like R_PPC_REL24, but uses the value of the symbol within the
559 object rather than the final value. Normally used for
560 _GLOBAL_OFFSET_TABLE_. */
561 HOWTO (R_PPC_LOCAL24PC, /* type */
562 0, /* rightshift */
563 2, /* size (0 = byte, 1 = short, 2 = long) */
564 26, /* bitsize */
565 TRUE, /* pc_relative */
566 0, /* bitpos */
567 complain_overflow_signed, /* complain_on_overflow */
568 bfd_elf_generic_reloc, /* special_function */
569 "R_PPC_LOCAL24PC", /* name */
570 FALSE, /* partial_inplace */
571 0, /* src_mask */
572 0x3fffffc, /* dst_mask */
573 TRUE), /* pcrel_offset */
574
575 /* Like R_PPC_ADDR32, but may be unaligned. */
576 HOWTO (R_PPC_UADDR32, /* type */
577 0, /* rightshift */
578 2, /* size (0 = byte, 1 = short, 2 = long) */
579 32, /* bitsize */
580 FALSE, /* pc_relative */
581 0, /* bitpos */
582 complain_overflow_bitfield, /* complain_on_overflow */
583 bfd_elf_generic_reloc, /* special_function */
584 "R_PPC_UADDR32", /* name */
585 FALSE, /* partial_inplace */
586 0, /* src_mask */
587 0xffffffff, /* dst_mask */
588 FALSE), /* pcrel_offset */
589
590 /* Like R_PPC_ADDR16, but may be unaligned. */
591 HOWTO (R_PPC_UADDR16, /* type */
592 0, /* rightshift */
593 1, /* size (0 = byte, 1 = short, 2 = long) */
594 16, /* bitsize */
595 FALSE, /* pc_relative */
596 0, /* bitpos */
597 complain_overflow_bitfield, /* complain_on_overflow */
598 bfd_elf_generic_reloc, /* special_function */
599 "R_PPC_UADDR16", /* name */
600 FALSE, /* partial_inplace */
601 0, /* src_mask */
602 0xffff, /* dst_mask */
603 FALSE), /* pcrel_offset */
604
605 /* 32-bit PC relative */
606 HOWTO (R_PPC_REL32, /* type */
607 0, /* rightshift */
608 2, /* size (0 = byte, 1 = short, 2 = long) */
609 32, /* bitsize */
610 TRUE, /* pc_relative */
611 0, /* bitpos */
612 complain_overflow_bitfield, /* complain_on_overflow */
613 bfd_elf_generic_reloc, /* special_function */
614 "R_PPC_REL32", /* name */
615 FALSE, /* partial_inplace */
616 0, /* src_mask */
617 0xffffffff, /* dst_mask */
618 TRUE), /* pcrel_offset */
619
620 /* 32-bit relocation to the symbol's procedure linkage table.
621 FIXME: not supported. */
622 HOWTO (R_PPC_PLT32, /* type */
623 0, /* rightshift */
624 2, /* size (0 = byte, 1 = short, 2 = long) */
625 32, /* bitsize */
626 FALSE, /* pc_relative */
627 0, /* bitpos */
628 complain_overflow_bitfield, /* complain_on_overflow */
629 bfd_elf_generic_reloc, /* special_function */
630 "R_PPC_PLT32", /* name */
631 FALSE, /* partial_inplace */
632 0, /* src_mask */
633 0, /* dst_mask */
634 FALSE), /* pcrel_offset */
635
636 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
637 FIXME: not supported. */
638 HOWTO (R_PPC_PLTREL32, /* type */
639 0, /* rightshift */
640 2, /* size (0 = byte, 1 = short, 2 = long) */
641 32, /* bitsize */
642 TRUE, /* pc_relative */
643 0, /* bitpos */
644 complain_overflow_bitfield, /* complain_on_overflow */
645 bfd_elf_generic_reloc, /* special_function */
646 "R_PPC_PLTREL32", /* name */
647 FALSE, /* partial_inplace */
648 0, /* src_mask */
649 0, /* dst_mask */
650 TRUE), /* pcrel_offset */
651
652 /* Like R_PPC_ADDR16_LO, but referring to the PLT table entry for
653 the symbol. */
654 HOWTO (R_PPC_PLT16_LO, /* type */
655 0, /* rightshift */
656 1, /* size (0 = byte, 1 = short, 2 = long) */
657 16, /* bitsize */
658 FALSE, /* pc_relative */
659 0, /* bitpos */
660 complain_overflow_dont, /* complain_on_overflow */
661 bfd_elf_generic_reloc, /* special_function */
662 "R_PPC_PLT16_LO", /* name */
663 FALSE, /* partial_inplace */
664 0, /* src_mask */
665 0xffff, /* dst_mask */
666 FALSE), /* pcrel_offset */
667
668 /* Like R_PPC_ADDR16_HI, but referring to the PLT table entry for
669 the symbol. */
670 HOWTO (R_PPC_PLT16_HI, /* type */
671 16, /* rightshift */
672 1, /* size (0 = byte, 1 = short, 2 = long) */
673 16, /* bitsize */
674 FALSE, /* pc_relative */
675 0, /* bitpos */
676 complain_overflow_bitfield, /* complain_on_overflow */
677 bfd_elf_generic_reloc, /* special_function */
678 "R_PPC_PLT16_HI", /* name */
679 FALSE, /* partial_inplace */
680 0, /* src_mask */
681 0xffff, /* dst_mask */
682 FALSE), /* pcrel_offset */
683
684 /* Like R_PPC_ADDR16_HA, but referring to the PLT table entry for
685 the symbol. */
686 HOWTO (R_PPC_PLT16_HA, /* type */
687 16, /* rightshift */
688 1, /* size (0 = byte, 1 = short, 2 = long) */
689 16, /* bitsize */
690 FALSE, /* pc_relative */
691 0, /* bitpos */
692 complain_overflow_bitfield, /* complain_on_overflow */
693 ppc_elf_addr16_ha_reloc, /* special_function */
694 "R_PPC_PLT16_HA", /* name */
695 FALSE, /* partial_inplace */
696 0, /* src_mask */
697 0xffff, /* dst_mask */
698 FALSE), /* pcrel_offset */
699
700 /* A sign-extended 16 bit value relative to _SDA_BASE_, for use with
701 small data items. */
702 HOWTO (R_PPC_SDAREL16, /* type */
703 0, /* rightshift */
704 1, /* size (0 = byte, 1 = short, 2 = long) */
705 16, /* bitsize */
706 FALSE, /* pc_relative */
707 0, /* bitpos */
708 complain_overflow_signed, /* complain_on_overflow */
709 bfd_elf_generic_reloc, /* special_function */
710 "R_PPC_SDAREL16", /* name */
711 FALSE, /* partial_inplace */
712 0, /* src_mask */
713 0xffff, /* dst_mask */
714 FALSE), /* pcrel_offset */
715
716 /* 16-bit section relative relocation. */
717 HOWTO (R_PPC_SECTOFF, /* type */
718 0, /* rightshift */
719 1, /* size (0 = byte, 1 = short, 2 = long) */
720 16, /* bitsize */
721 FALSE, /* pc_relative */
722 0, /* bitpos */
723 complain_overflow_bitfield, /* complain_on_overflow */
724 bfd_elf_generic_reloc, /* special_function */
725 "R_PPC_SECTOFF", /* name */
726 FALSE, /* partial_inplace */
727 0, /* src_mask */
728 0xffff, /* dst_mask */
729 FALSE), /* pcrel_offset */
730
731 /* 16-bit lower half section relative relocation. */
732 HOWTO (R_PPC_SECTOFF_LO, /* type */
733 0, /* rightshift */
734 1, /* size (0 = byte, 1 = short, 2 = long) */
735 16, /* bitsize */
736 FALSE, /* pc_relative */
737 0, /* bitpos */
738 complain_overflow_dont, /* complain_on_overflow */
739 bfd_elf_generic_reloc, /* special_function */
740 "R_PPC_SECTOFF_LO", /* name */
741 FALSE, /* partial_inplace */
742 0, /* src_mask */
743 0xffff, /* dst_mask */
744 FALSE), /* pcrel_offset */
745
746 /* 16-bit upper half section relative relocation. */
747 HOWTO (R_PPC_SECTOFF_HI, /* type */
748 16, /* rightshift */
749 1, /* size (0 = byte, 1 = short, 2 = long) */
750 16, /* bitsize */
751 FALSE, /* pc_relative */
752 0, /* bitpos */
753 complain_overflow_bitfield, /* complain_on_overflow */
754 bfd_elf_generic_reloc, /* special_function */
755 "R_PPC_SECTOFF_HI", /* name */
756 FALSE, /* partial_inplace */
757 0, /* src_mask */
758 0xffff, /* dst_mask */
759 FALSE), /* pcrel_offset */
760
761 /* 16-bit upper half adjusted section relative relocation. */
762 HOWTO (R_PPC_SECTOFF_HA, /* type */
763 16, /* rightshift */
764 1, /* size (0 = byte, 1 = short, 2 = long) */
765 16, /* bitsize */
766 FALSE, /* pc_relative */
767 0, /* bitpos */
768 complain_overflow_bitfield, /* complain_on_overflow */
769 ppc_elf_addr16_ha_reloc, /* special_function */
770 "R_PPC_SECTOFF_HA", /* name */
771 FALSE, /* partial_inplace */
772 0, /* src_mask */
773 0xffff, /* dst_mask */
774 FALSE), /* pcrel_offset */
775
776 /* Marker relocs for TLS. */
777 HOWTO (R_PPC_TLS,
778 0, /* rightshift */
779 2, /* size (0 = byte, 1 = short, 2 = long) */
780 32, /* bitsize */
781 FALSE, /* pc_relative */
782 0, /* bitpos */
783 complain_overflow_dont, /* complain_on_overflow */
784 bfd_elf_generic_reloc, /* special_function */
785 "R_PPC_TLS", /* name */
786 FALSE, /* partial_inplace */
787 0, /* src_mask */
788 0, /* dst_mask */
789 FALSE), /* pcrel_offset */
790
791 HOWTO (R_PPC_TLSGD,
792 0, /* rightshift */
793 2, /* size (0 = byte, 1 = short, 2 = long) */
794 32, /* bitsize */
795 FALSE, /* pc_relative */
796 0, /* bitpos */
797 complain_overflow_dont, /* complain_on_overflow */
798 bfd_elf_generic_reloc, /* special_function */
799 "R_PPC_TLSGD", /* name */
800 FALSE, /* partial_inplace */
801 0, /* src_mask */
802 0, /* dst_mask */
803 FALSE), /* pcrel_offset */
804
805 HOWTO (R_PPC_TLSLD,
806 0, /* rightshift */
807 2, /* size (0 = byte, 1 = short, 2 = long) */
808 32, /* bitsize */
809 FALSE, /* pc_relative */
810 0, /* bitpos */
811 complain_overflow_dont, /* complain_on_overflow */
812 bfd_elf_generic_reloc, /* special_function */
813 "R_PPC_TLSLD", /* name */
814 FALSE, /* partial_inplace */
815 0, /* src_mask */
816 0, /* dst_mask */
817 FALSE), /* pcrel_offset */
818
819 /* Computes the load module index of the load module that contains the
820 definition of its TLS sym. */
821 HOWTO (R_PPC_DTPMOD32,
822 0, /* rightshift */
823 2, /* size (0 = byte, 1 = short, 2 = long) */
824 32, /* bitsize */
825 FALSE, /* pc_relative */
826 0, /* bitpos */
827 complain_overflow_dont, /* complain_on_overflow */
828 ppc_elf_unhandled_reloc, /* special_function */
829 "R_PPC_DTPMOD32", /* name */
830 FALSE, /* partial_inplace */
831 0, /* src_mask */
832 0xffffffff, /* dst_mask */
833 FALSE), /* pcrel_offset */
834
835 /* Computes a dtv-relative displacement, the difference between the value
836 of sym+add and the base address of the thread-local storage block that
837 contains the definition of sym, minus 0x8000. */
838 HOWTO (R_PPC_DTPREL32,
839 0, /* rightshift */
840 2, /* size (0 = byte, 1 = short, 2 = long) */
841 32, /* bitsize */
842 FALSE, /* pc_relative */
843 0, /* bitpos */
844 complain_overflow_dont, /* complain_on_overflow */
845 ppc_elf_unhandled_reloc, /* special_function */
846 "R_PPC_DTPREL32", /* name */
847 FALSE, /* partial_inplace */
848 0, /* src_mask */
849 0xffffffff, /* dst_mask */
850 FALSE), /* pcrel_offset */
851
852 /* A 16 bit dtprel reloc. */
853 HOWTO (R_PPC_DTPREL16,
854 0, /* rightshift */
855 1, /* size (0 = byte, 1 = short, 2 = long) */
856 16, /* bitsize */
857 FALSE, /* pc_relative */
858 0, /* bitpos */
859 complain_overflow_signed, /* complain_on_overflow */
860 ppc_elf_unhandled_reloc, /* special_function */
861 "R_PPC_DTPREL16", /* name */
862 FALSE, /* partial_inplace */
863 0, /* src_mask */
864 0xffff, /* dst_mask */
865 FALSE), /* pcrel_offset */
866
867 /* Like DTPREL16, but no overflow. */
868 HOWTO (R_PPC_DTPREL16_LO,
869 0, /* rightshift */
870 1, /* size (0 = byte, 1 = short, 2 = long) */
871 16, /* bitsize */
872 FALSE, /* pc_relative */
873 0, /* bitpos */
874 complain_overflow_dont, /* complain_on_overflow */
875 ppc_elf_unhandled_reloc, /* special_function */
876 "R_PPC_DTPREL16_LO", /* name */
877 FALSE, /* partial_inplace */
878 0, /* src_mask */
879 0xffff, /* dst_mask */
880 FALSE), /* pcrel_offset */
881
882 /* Like DTPREL16_LO, but next higher group of 16 bits. */
883 HOWTO (R_PPC_DTPREL16_HI,
884 16, /* rightshift */
885 1, /* size (0 = byte, 1 = short, 2 = long) */
886 16, /* bitsize */
887 FALSE, /* pc_relative */
888 0, /* bitpos */
889 complain_overflow_dont, /* complain_on_overflow */
890 ppc_elf_unhandled_reloc, /* special_function */
891 "R_PPC_DTPREL16_HI", /* name */
892 FALSE, /* partial_inplace */
893 0, /* src_mask */
894 0xffff, /* dst_mask */
895 FALSE), /* pcrel_offset */
896
897 /* Like DTPREL16_HI, but adjust for low 16 bits. */
898 HOWTO (R_PPC_DTPREL16_HA,
899 16, /* rightshift */
900 1, /* size (0 = byte, 1 = short, 2 = long) */
901 16, /* bitsize */
902 FALSE, /* pc_relative */
903 0, /* bitpos */
904 complain_overflow_dont, /* complain_on_overflow */
905 ppc_elf_unhandled_reloc, /* special_function */
906 "R_PPC_DTPREL16_HA", /* name */
907 FALSE, /* partial_inplace */
908 0, /* src_mask */
909 0xffff, /* dst_mask */
910 FALSE), /* pcrel_offset */
911
912 /* Computes a tp-relative displacement, the difference between the value of
913 sym+add and the value of the thread pointer (r13). */
914 HOWTO (R_PPC_TPREL32,
915 0, /* rightshift */
916 2, /* size (0 = byte, 1 = short, 2 = long) */
917 32, /* bitsize */
918 FALSE, /* pc_relative */
919 0, /* bitpos */
920 complain_overflow_dont, /* complain_on_overflow */
921 ppc_elf_unhandled_reloc, /* special_function */
922 "R_PPC_TPREL32", /* name */
923 FALSE, /* partial_inplace */
924 0, /* src_mask */
925 0xffffffff, /* dst_mask */
926 FALSE), /* pcrel_offset */
927
928 /* A 16 bit tprel reloc. */
929 HOWTO (R_PPC_TPREL16,
930 0, /* rightshift */
931 1, /* size (0 = byte, 1 = short, 2 = long) */
932 16, /* bitsize */
933 FALSE, /* pc_relative */
934 0, /* bitpos */
935 complain_overflow_signed, /* complain_on_overflow */
936 ppc_elf_unhandled_reloc, /* special_function */
937 "R_PPC_TPREL16", /* name */
938 FALSE, /* partial_inplace */
939 0, /* src_mask */
940 0xffff, /* dst_mask */
941 FALSE), /* pcrel_offset */
942
943 /* Like TPREL16, but no overflow. */
944 HOWTO (R_PPC_TPREL16_LO,
945 0, /* rightshift */
946 1, /* size (0 = byte, 1 = short, 2 = long) */
947 16, /* bitsize */
948 FALSE, /* pc_relative */
949 0, /* bitpos */
950 complain_overflow_dont, /* complain_on_overflow */
951 ppc_elf_unhandled_reloc, /* special_function */
952 "R_PPC_TPREL16_LO", /* name */
953 FALSE, /* partial_inplace */
954 0, /* src_mask */
955 0xffff, /* dst_mask */
956 FALSE), /* pcrel_offset */
957
958 /* Like TPREL16_LO, but next higher group of 16 bits. */
959 HOWTO (R_PPC_TPREL16_HI,
960 16, /* rightshift */
961 1, /* size (0 = byte, 1 = short, 2 = long) */
962 16, /* bitsize */
963 FALSE, /* pc_relative */
964 0, /* bitpos */
965 complain_overflow_dont, /* complain_on_overflow */
966 ppc_elf_unhandled_reloc, /* special_function */
967 "R_PPC_TPREL16_HI", /* name */
968 FALSE, /* partial_inplace */
969 0, /* src_mask */
970 0xffff, /* dst_mask */
971 FALSE), /* pcrel_offset */
972
973 /* Like TPREL16_HI, but adjust for low 16 bits. */
974 HOWTO (R_PPC_TPREL16_HA,
975 16, /* rightshift */
976 1, /* size (0 = byte, 1 = short, 2 = long) */
977 16, /* bitsize */
978 FALSE, /* pc_relative */
979 0, /* bitpos */
980 complain_overflow_dont, /* complain_on_overflow */
981 ppc_elf_unhandled_reloc, /* special_function */
982 "R_PPC_TPREL16_HA", /* name */
983 FALSE, /* partial_inplace */
984 0, /* src_mask */
985 0xffff, /* dst_mask */
986 FALSE), /* pcrel_offset */
987
988 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
989 with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
990 to the first entry. */
991 HOWTO (R_PPC_GOT_TLSGD16,
992 0, /* rightshift */
993 1, /* size (0 = byte, 1 = short, 2 = long) */
994 16, /* bitsize */
995 FALSE, /* pc_relative */
996 0, /* bitpos */
997 complain_overflow_signed, /* complain_on_overflow */
998 ppc_elf_unhandled_reloc, /* special_function */
999 "R_PPC_GOT_TLSGD16", /* name */
1000 FALSE, /* partial_inplace */
1001 0, /* src_mask */
1002 0xffff, /* dst_mask */
1003 FALSE), /* pcrel_offset */
1004
1005 /* Like GOT_TLSGD16, but no overflow. */
1006 HOWTO (R_PPC_GOT_TLSGD16_LO,
1007 0, /* rightshift */
1008 1, /* size (0 = byte, 1 = short, 2 = long) */
1009 16, /* bitsize */
1010 FALSE, /* pc_relative */
1011 0, /* bitpos */
1012 complain_overflow_dont, /* complain_on_overflow */
1013 ppc_elf_unhandled_reloc, /* special_function */
1014 "R_PPC_GOT_TLSGD16_LO", /* name */
1015 FALSE, /* partial_inplace */
1016 0, /* src_mask */
1017 0xffff, /* dst_mask */
1018 FALSE), /* pcrel_offset */
1019
1020 /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
1021 HOWTO (R_PPC_GOT_TLSGD16_HI,
1022 16, /* rightshift */
1023 1, /* size (0 = byte, 1 = short, 2 = long) */
1024 16, /* bitsize */
1025 FALSE, /* pc_relative */
1026 0, /* bitpos */
1027 complain_overflow_dont, /* complain_on_overflow */
1028 ppc_elf_unhandled_reloc, /* special_function */
1029 "R_PPC_GOT_TLSGD16_HI", /* name */
1030 FALSE, /* partial_inplace */
1031 0, /* src_mask */
1032 0xffff, /* dst_mask */
1033 FALSE), /* pcrel_offset */
1034
1035 /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
1036 HOWTO (R_PPC_GOT_TLSGD16_HA,
1037 16, /* rightshift */
1038 1, /* size (0 = byte, 1 = short, 2 = long) */
1039 16, /* bitsize */
1040 FALSE, /* pc_relative */
1041 0, /* bitpos */
1042 complain_overflow_dont, /* complain_on_overflow */
1043 ppc_elf_unhandled_reloc, /* special_function */
1044 "R_PPC_GOT_TLSGD16_HA", /* name */
1045 FALSE, /* partial_inplace */
1046 0, /* src_mask */
1047 0xffff, /* dst_mask */
1048 FALSE), /* pcrel_offset */
1049
1050 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1051 with values (sym+add)@dtpmod and zero, and computes the offset to the
1052 first entry. */
1053 HOWTO (R_PPC_GOT_TLSLD16,
1054 0, /* rightshift */
1055 1, /* size (0 = byte, 1 = short, 2 = long) */
1056 16, /* bitsize */
1057 FALSE, /* pc_relative */
1058 0, /* bitpos */
1059 complain_overflow_signed, /* complain_on_overflow */
1060 ppc_elf_unhandled_reloc, /* special_function */
1061 "R_PPC_GOT_TLSLD16", /* name */
1062 FALSE, /* partial_inplace */
1063 0, /* src_mask */
1064 0xffff, /* dst_mask */
1065 FALSE), /* pcrel_offset */
1066
1067 /* Like GOT_TLSLD16, but no overflow. */
1068 HOWTO (R_PPC_GOT_TLSLD16_LO,
1069 0, /* rightshift */
1070 1, /* size (0 = byte, 1 = short, 2 = long) */
1071 16, /* bitsize */
1072 FALSE, /* pc_relative */
1073 0, /* bitpos */
1074 complain_overflow_dont, /* complain_on_overflow */
1075 ppc_elf_unhandled_reloc, /* special_function */
1076 "R_PPC_GOT_TLSLD16_LO", /* name */
1077 FALSE, /* partial_inplace */
1078 0, /* src_mask */
1079 0xffff, /* dst_mask */
1080 FALSE), /* pcrel_offset */
1081
1082 /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
1083 HOWTO (R_PPC_GOT_TLSLD16_HI,
1084 16, /* rightshift */
1085 1, /* size (0 = byte, 1 = short, 2 = long) */
1086 16, /* bitsize */
1087 FALSE, /* pc_relative */
1088 0, /* bitpos */
1089 complain_overflow_dont, /* complain_on_overflow */
1090 ppc_elf_unhandled_reloc, /* special_function */
1091 "R_PPC_GOT_TLSLD16_HI", /* name */
1092 FALSE, /* partial_inplace */
1093 0, /* src_mask */
1094 0xffff, /* dst_mask */
1095 FALSE), /* pcrel_offset */
1096
1097 /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
1098 HOWTO (R_PPC_GOT_TLSLD16_HA,
1099 16, /* rightshift */
1100 1, /* size (0 = byte, 1 = short, 2 = long) */
1101 16, /* bitsize */
1102 FALSE, /* pc_relative */
1103 0, /* bitpos */
1104 complain_overflow_dont, /* complain_on_overflow */
1105 ppc_elf_unhandled_reloc, /* special_function */
1106 "R_PPC_GOT_TLSLD16_HA", /* name */
1107 FALSE, /* partial_inplace */
1108 0, /* src_mask */
1109 0xffff, /* dst_mask */
1110 FALSE), /* pcrel_offset */
1111
1112 /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
1113 the offset to the entry. */
1114 HOWTO (R_PPC_GOT_DTPREL16,
1115 0, /* rightshift */
1116 1, /* size (0 = byte, 1 = short, 2 = long) */
1117 16, /* bitsize */
1118 FALSE, /* pc_relative */
1119 0, /* bitpos */
1120 complain_overflow_signed, /* complain_on_overflow */
1121 ppc_elf_unhandled_reloc, /* special_function */
1122 "R_PPC_GOT_DTPREL16", /* name */
1123 FALSE, /* partial_inplace */
1124 0, /* src_mask */
1125 0xffff, /* dst_mask */
1126 FALSE), /* pcrel_offset */
1127
1128 /* Like GOT_DTPREL16, but no overflow. */
1129 HOWTO (R_PPC_GOT_DTPREL16_LO,
1130 0, /* rightshift */
1131 1, /* size (0 = byte, 1 = short, 2 = long) */
1132 16, /* bitsize */
1133 FALSE, /* pc_relative */
1134 0, /* bitpos */
1135 complain_overflow_dont, /* complain_on_overflow */
1136 ppc_elf_unhandled_reloc, /* special_function */
1137 "R_PPC_GOT_DTPREL16_LO", /* name */
1138 FALSE, /* partial_inplace */
1139 0, /* src_mask */
1140 0xffff, /* dst_mask */
1141 FALSE), /* pcrel_offset */
1142
1143 /* Like GOT_DTPREL16_LO, but next higher group of 16 bits. */
1144 HOWTO (R_PPC_GOT_DTPREL16_HI,
1145 16, /* rightshift */
1146 1, /* size (0 = byte, 1 = short, 2 = long) */
1147 16, /* bitsize */
1148 FALSE, /* pc_relative */
1149 0, /* bitpos */
1150 complain_overflow_dont, /* complain_on_overflow */
1151 ppc_elf_unhandled_reloc, /* special_function */
1152 "R_PPC_GOT_DTPREL16_HI", /* name */
1153 FALSE, /* partial_inplace */
1154 0, /* src_mask */
1155 0xffff, /* dst_mask */
1156 FALSE), /* pcrel_offset */
1157
1158 /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
1159 HOWTO (R_PPC_GOT_DTPREL16_HA,
1160 16, /* rightshift */
1161 1, /* size (0 = byte, 1 = short, 2 = long) */
1162 16, /* bitsize */
1163 FALSE, /* pc_relative */
1164 0, /* bitpos */
1165 complain_overflow_dont, /* complain_on_overflow */
1166 ppc_elf_unhandled_reloc, /* special_function */
1167 "R_PPC_GOT_DTPREL16_HA", /* name */
1168 FALSE, /* partial_inplace */
1169 0, /* src_mask */
1170 0xffff, /* dst_mask */
1171 FALSE), /* pcrel_offset */
1172
1173 /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
1174 offset to the entry. */
1175 HOWTO (R_PPC_GOT_TPREL16,
1176 0, /* rightshift */
1177 1, /* size (0 = byte, 1 = short, 2 = long) */
1178 16, /* bitsize */
1179 FALSE, /* pc_relative */
1180 0, /* bitpos */
1181 complain_overflow_signed, /* complain_on_overflow */
1182 ppc_elf_unhandled_reloc, /* special_function */
1183 "R_PPC_GOT_TPREL16", /* name */
1184 FALSE, /* partial_inplace */
1185 0, /* src_mask */
1186 0xffff, /* dst_mask */
1187 FALSE), /* pcrel_offset */
1188
1189 /* Like GOT_TPREL16, but no overflow. */
1190 HOWTO (R_PPC_GOT_TPREL16_LO,
1191 0, /* rightshift */
1192 1, /* size (0 = byte, 1 = short, 2 = long) */
1193 16, /* bitsize */
1194 FALSE, /* pc_relative */
1195 0, /* bitpos */
1196 complain_overflow_dont, /* complain_on_overflow */
1197 ppc_elf_unhandled_reloc, /* special_function */
1198 "R_PPC_GOT_TPREL16_LO", /* name */
1199 FALSE, /* partial_inplace */
1200 0, /* src_mask */
1201 0xffff, /* dst_mask */
1202 FALSE), /* pcrel_offset */
1203
1204 /* Like GOT_TPREL16_LO, but next higher group of 16 bits. */
1205 HOWTO (R_PPC_GOT_TPREL16_HI,
1206 16, /* rightshift */
1207 1, /* size (0 = byte, 1 = short, 2 = long) */
1208 16, /* bitsize */
1209 FALSE, /* pc_relative */
1210 0, /* bitpos */
1211 complain_overflow_dont, /* complain_on_overflow */
1212 ppc_elf_unhandled_reloc, /* special_function */
1213 "R_PPC_GOT_TPREL16_HI", /* name */
1214 FALSE, /* partial_inplace */
1215 0, /* src_mask */
1216 0xffff, /* dst_mask */
1217 FALSE), /* pcrel_offset */
1218
1219 /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
1220 HOWTO (R_PPC_GOT_TPREL16_HA,
1221 16, /* rightshift */
1222 1, /* size (0 = byte, 1 = short, 2 = long) */
1223 16, /* bitsize */
1224 FALSE, /* pc_relative */
1225 0, /* bitpos */
1226 complain_overflow_dont, /* complain_on_overflow */
1227 ppc_elf_unhandled_reloc, /* special_function */
1228 "R_PPC_GOT_TPREL16_HA", /* name */
1229 FALSE, /* partial_inplace */
1230 0, /* src_mask */
1231 0xffff, /* dst_mask */
1232 FALSE), /* pcrel_offset */
1233
1234 /* The remaining relocs are from the Embedded ELF ABI, and are not
1235 in the SVR4 ELF ABI. */
1236
1237 /* 32 bit value resulting from the addend minus the symbol. */
1238 HOWTO (R_PPC_EMB_NADDR32, /* type */
1239 0, /* rightshift */
1240 2, /* size (0 = byte, 1 = short, 2 = long) */
1241 32, /* bitsize */
1242 FALSE, /* pc_relative */
1243 0, /* bitpos */
1244 complain_overflow_bitfield, /* complain_on_overflow */
1245 bfd_elf_generic_reloc, /* special_function */
1246 "R_PPC_EMB_NADDR32", /* name */
1247 FALSE, /* partial_inplace */
1248 0, /* src_mask */
1249 0xffffffff, /* dst_mask */
1250 FALSE), /* pcrel_offset */
1251
1252 /* 16 bit value resulting from the addend minus the symbol. */
1253 HOWTO (R_PPC_EMB_NADDR16, /* type */
1254 0, /* rightshift */
1255 1, /* size (0 = byte, 1 = short, 2 = long) */
1256 16, /* bitsize */
1257 FALSE, /* pc_relative */
1258 0, /* bitpos */
1259 complain_overflow_bitfield, /* complain_on_overflow */
1260 bfd_elf_generic_reloc, /* special_function */
1261 "R_PPC_EMB_NADDR16", /* name */
1262 FALSE, /* partial_inplace */
1263 0, /* src_mask */
1264 0xffff, /* dst_mask */
1265 FALSE), /* pcrel_offset */
1266
1267 /* 16 bit value resulting from the addend minus the symbol. */
1268 HOWTO (R_PPC_EMB_NADDR16_LO, /* type */
1269 0, /* rightshift */
1270 1, /* size (0 = byte, 1 = short, 2 = long) */
1271 16, /* bitsize */
1272 FALSE, /* pc_relative */
1273 0, /* bitpos */
1274 complain_overflow_dont,/* complain_on_overflow */
1275 bfd_elf_generic_reloc, /* special_function */
1276 "R_PPC_EMB_ADDR16_LO", /* name */
1277 FALSE, /* partial_inplace */
1278 0, /* src_mask */
1279 0xffff, /* dst_mask */
1280 FALSE), /* pcrel_offset */
1281
1282 /* The high order 16 bits of the addend minus the symbol. */
1283 HOWTO (R_PPC_EMB_NADDR16_HI, /* type */
1284 16, /* rightshift */
1285 1, /* size (0 = byte, 1 = short, 2 = long) */
1286 16, /* bitsize */
1287 FALSE, /* pc_relative */
1288 0, /* bitpos */
1289 complain_overflow_dont, /* complain_on_overflow */
1290 bfd_elf_generic_reloc, /* special_function */
1291 "R_PPC_EMB_NADDR16_HI", /* name */
1292 FALSE, /* partial_inplace */
1293 0, /* src_mask */
1294 0xffff, /* dst_mask */
1295 FALSE), /* pcrel_offset */
1296
1297 /* The high order 16 bits of the result of the addend minus the address,
1298 plus 1 if the contents of the low 16 bits, treated as a signed number,
1299 is negative. */
1300 HOWTO (R_PPC_EMB_NADDR16_HA, /* type */
1301 16, /* rightshift */
1302 1, /* size (0 = byte, 1 = short, 2 = long) */
1303 16, /* bitsize */
1304 FALSE, /* pc_relative */
1305 0, /* bitpos */
1306 complain_overflow_dont, /* complain_on_overflow */
1307 ppc_elf_addr16_ha_reloc, /* special_function */
1308 "R_PPC_EMB_NADDR16_HA", /* name */
1309 FALSE, /* partial_inplace */
1310 0, /* src_mask */
1311 0xffff, /* dst_mask */
1312 FALSE), /* pcrel_offset */
1313
1314 /* 16 bit value resulting from allocating a 4 byte word to hold an
1315 address in the .sdata section, and returning the offset from
1316 _SDA_BASE_ for that relocation. */
1317 HOWTO (R_PPC_EMB_SDAI16, /* type */
1318 0, /* rightshift */
1319 1, /* size (0 = byte, 1 = short, 2 = long) */
1320 16, /* bitsize */
1321 FALSE, /* pc_relative */
1322 0, /* bitpos */
1323 complain_overflow_signed, /* complain_on_overflow */
1324 bfd_elf_generic_reloc, /* special_function */
1325 "R_PPC_EMB_SDAI16", /* name */
1326 FALSE, /* partial_inplace */
1327 0, /* src_mask */
1328 0xffff, /* dst_mask */
1329 FALSE), /* pcrel_offset */
1330
1331 /* 16 bit value resulting from allocating a 4 byte word to hold an
1332 address in the .sdata2 section, and returning the offset from
1333 _SDA2_BASE_ for that relocation. */
1334 HOWTO (R_PPC_EMB_SDA2I16, /* type */
1335 0, /* rightshift */
1336 1, /* size (0 = byte, 1 = short, 2 = long) */
1337 16, /* bitsize */
1338 FALSE, /* pc_relative */
1339 0, /* bitpos */
1340 complain_overflow_signed, /* complain_on_overflow */
1341 bfd_elf_generic_reloc, /* special_function */
1342 "R_PPC_EMB_SDA2I16", /* name */
1343 FALSE, /* partial_inplace */
1344 0, /* src_mask */
1345 0xffff, /* dst_mask */
1346 FALSE), /* pcrel_offset */
1347
1348 /* A sign-extended 16 bit value relative to _SDA2_BASE_, for use with
1349 small data items. */
1350 HOWTO (R_PPC_EMB_SDA2REL, /* type */
1351 0, /* rightshift */
1352 1, /* size (0 = byte, 1 = short, 2 = long) */
1353 16, /* bitsize */
1354 FALSE, /* pc_relative */
1355 0, /* bitpos */
1356 complain_overflow_signed, /* complain_on_overflow */
1357 bfd_elf_generic_reloc, /* special_function */
1358 "R_PPC_EMB_SDA2REL", /* name */
1359 FALSE, /* partial_inplace */
1360 0, /* src_mask */
1361 0xffff, /* dst_mask */
1362 FALSE), /* pcrel_offset */
1363
1364 /* Relocate against either _SDA_BASE_ or _SDA2_BASE_, filling in the 16 bit
1365 signed offset from the appropriate base, and filling in the register
1366 field with the appropriate register (0, 2, or 13). */
1367 HOWTO (R_PPC_EMB_SDA21, /* type */
1368 0, /* rightshift */
1369 2, /* size (0 = byte, 1 = short, 2 = long) */
1370 16, /* bitsize */
1371 FALSE, /* pc_relative */
1372 0, /* bitpos */
1373 complain_overflow_signed, /* complain_on_overflow */
1374 bfd_elf_generic_reloc, /* special_function */
1375 "R_PPC_EMB_SDA21", /* name */
1376 FALSE, /* partial_inplace */
1377 0, /* src_mask */
1378 0xffff, /* dst_mask */
1379 FALSE), /* pcrel_offset */
1380
1381 /* Relocation not handled: R_PPC_EMB_MRKREF */
1382 /* Relocation not handled: R_PPC_EMB_RELSEC16 */
1383 /* Relocation not handled: R_PPC_EMB_RELST_LO */
1384 /* Relocation not handled: R_PPC_EMB_RELST_HI */
1385 /* Relocation not handled: R_PPC_EMB_RELST_HA */
1386 /* Relocation not handled: R_PPC_EMB_BIT_FLD */
1387
1388 /* PC relative relocation against either _SDA_BASE_ or _SDA2_BASE_, filling
1389 in the 16 bit signed offset from the appropriate base, and filling in the
1390 register field with the appropriate register (0, 2, or 13). */
1391 HOWTO (R_PPC_EMB_RELSDA, /* type */
1392 0, /* rightshift */
1393 1, /* size (0 = byte, 1 = short, 2 = long) */
1394 16, /* bitsize */
1395 FALSE, /* pc_relative */
1396 0, /* bitpos */
1397 complain_overflow_signed, /* complain_on_overflow */
1398 bfd_elf_generic_reloc, /* special_function */
1399 "R_PPC_EMB_RELSDA", /* name */
1400 FALSE, /* partial_inplace */
1401 0, /* src_mask */
1402 0xffff, /* dst_mask */
1403 FALSE), /* pcrel_offset */
1404
1405 /* A relative 8 bit branch. */
1406 HOWTO (R_PPC_VLE_REL8, /* type */
1407 1, /* rightshift */
1408 1, /* size (0 = byte, 1 = short, 2 = long) */
1409 8, /* bitsize */
1410 TRUE, /* pc_relative */
1411 0, /* bitpos */
1412 complain_overflow_signed, /* complain_on_overflow */
1413 bfd_elf_generic_reloc, /* special_function */
1414 "R_PPC_VLE_REL8", /* name */
1415 FALSE, /* partial_inplace */
1416 0, /* src_mask */
1417 0xff, /* dst_mask */
1418 TRUE), /* pcrel_offset */
1419
1420 /* A relative 15 bit branch. */
1421 HOWTO (R_PPC_VLE_REL15, /* type */
1422 1, /* rightshift */
1423 2, /* size (0 = byte, 1 = short, 2 = long) */
1424 15, /* bitsize */
1425 TRUE, /* pc_relative */
1426 1, /* bitpos */
1427 complain_overflow_signed, /* complain_on_overflow */
1428 bfd_elf_generic_reloc, /* special_function */
1429 "R_PPC_VLE_REL15", /* name */
1430 FALSE, /* partial_inplace */
1431 0, /* src_mask */
1432 0xfe, /* dst_mask */
1433 TRUE), /* pcrel_offset */
1434
1435 /* A relative 24 bit branch. */
1436 HOWTO (R_PPC_VLE_REL24, /* type */
1437 1, /* rightshift */
1438 2, /* size (0 = byte, 1 = short, 2 = long) */
1439 24, /* bitsize */
1440 TRUE, /* pc_relative */
1441 1, /* bitpos */
1442 complain_overflow_signed, /* complain_on_overflow */
1443 bfd_elf_generic_reloc, /* special_function */
1444 "R_PPC_VLE_REL24", /* name */
1445 FALSE, /* partial_inplace */
1446 0, /* src_mask */
1447 0x1fffffe, /* dst_mask */
1448 TRUE), /* pcrel_offset */
1449
1450 /* The 16 LSBS in split16a format. */
1451 HOWTO (R_PPC_VLE_LO16A, /* type */
1452 0, /* rightshift */
1453 2, /* size (0 = byte, 1 = short, 2 = long) */
1454 32, /* bitsize */
1455 FALSE, /* pc_relative */
1456 0, /* bitpos */
1457 complain_overflow_bitfield, /* complain_on_overflow */
1458 bfd_elf_generic_reloc, /* special_function */
1459 "R_PPC_VLE_LO16A", /* name */
1460 FALSE, /* partial_inplace */
1461 0, /* src_mask */
1462 0x1f007ff, /* dst_mask */
1463 FALSE), /* pcrel_offset */
1464
1465 /* The 16 LSBS in split16d format. */
1466 HOWTO (R_PPC_VLE_LO16D, /* type */
1467 0, /* rightshift */
1468 2, /* size (0 = byte, 1 = short, 2 = long) */
1469 32, /* bitsize */
1470 FALSE, /* pc_relative */
1471 0, /* bitpos */
1472 complain_overflow_bitfield, /* complain_on_overflow */
1473 bfd_elf_generic_reloc, /* special_function */
1474 "R_PPC_VLE_LO16D", /* name */
1475 FALSE, /* partial_inplace */
1476 0, /* src_mask */
1477 0x1f07ff, /* dst_mask */
1478 FALSE), /* pcrel_offset */
1479
1480 /* Bits 16-31 split16a format. */
1481 HOWTO (R_PPC_VLE_HI16A, /* type */
1482 0, /* rightshift */
1483 2, /* size (0 = byte, 1 = short, 2 = long) */
1484 32, /* bitsize */
1485 FALSE, /* pc_relative */
1486 0, /* bitpos */
1487 complain_overflow_bitfield, /* complain_on_overflow */
1488 bfd_elf_generic_reloc, /* special_function */
1489 "R_PPC_VLE_HI16A", /* name */
1490 FALSE, /* partial_inplace */
1491 0, /* src_mask */
1492 0x1f007ff, /* dst_mask */
1493 FALSE), /* pcrel_offset */
1494
1495 /* Bits 16-31 split16d format. */
1496 HOWTO (R_PPC_VLE_HI16D, /* type */
1497 0, /* rightshift */
1498 2, /* size (0 = byte, 1 = short, 2 = long) */
1499 32, /* bitsize */
1500 FALSE, /* pc_relative */
1501 0, /* bitpos */
1502 complain_overflow_bitfield, /* complain_on_overflow */
1503 bfd_elf_generic_reloc, /* special_function */
1504 "R_PPC_VLE_HI16D", /* name */
1505 FALSE, /* partial_inplace */
1506 0, /* src_mask */
1507 0x1f07ff, /* dst_mask */
1508 FALSE), /* pcrel_offset */
1509
1510 /* Bits 16-31 (High Adjusted) in split16a format. */
1511 HOWTO (R_PPC_VLE_HA16A, /* type */
1512 0, /* rightshift */
1513 2, /* size (0 = byte, 1 = short, 2 = long) */
1514 32, /* bitsize */
1515 FALSE, /* pc_relative */
1516 0, /* bitpos */
1517 complain_overflow_bitfield, /* complain_on_overflow */
1518 bfd_elf_generic_reloc, /* special_function */
1519 "R_PPC_VLE_HA16A", /* name */
1520 FALSE, /* partial_inplace */
1521 0, /* src_mask */
1522 0x1f007ff, /* dst_mask */
1523 FALSE), /* pcrel_offset */
1524
1525 /* Bits 16-31 (High Adjusted) in split16d format. */
1526 HOWTO (R_PPC_VLE_HA16D, /* type */
1527 0, /* rightshift */
1528 2, /* size (0 = byte, 1 = short, 2 = long) */
1529 32, /* bitsize */
1530 FALSE, /* pc_relative */
1531 0, /* bitpos */
1532 complain_overflow_bitfield, /* complain_on_overflow */
1533 bfd_elf_generic_reloc, /* special_function */
1534 "R_PPC_VLE_HA16D", /* name */
1535 FALSE, /* partial_inplace */
1536 0, /* src_mask */
1537 0x1f07ff, /* dst_mask */
1538 FALSE), /* pcrel_offset */
1539
1540 /* This reloc does nothing. */
1541 HOWTO (R_PPC_VLE_SDA21, /* type */
1542 0, /* rightshift */
1543 2, /* size (0 = byte, 1 = short, 2 = long) */
1544 32, /* bitsize */
1545 FALSE, /* pc_relative */
1546 0, /* bitpos */
1547 complain_overflow_bitfield, /* complain_on_overflow */
1548 bfd_elf_generic_reloc, /* special_function */
1549 "R_PPC_VLE_SDA21", /* name */
1550 FALSE, /* partial_inplace */
1551 0, /* src_mask */
1552 0xffff, /* dst_mask */
1553 FALSE), /* pcrel_offset */
1554
1555 /* This reloc does nothing. */
1556 HOWTO (R_PPC_VLE_SDA21_LO, /* type */
1557 0, /* rightshift */
1558 2, /* size (0 = byte, 1 = short, 2 = long) */
1559 32, /* bitsize */
1560 FALSE, /* pc_relative */
1561 0, /* bitpos */
1562 complain_overflow_bitfield, /* complain_on_overflow */
1563 bfd_elf_generic_reloc, /* special_function */
1564 "R_PPC_VLE_SDA21_LO", /* name */
1565 FALSE, /* partial_inplace */
1566 0, /* src_mask */
1567 0, /* dst_mask */
1568 FALSE), /* pcrel_offset */
1569
1570 /* The 16 LSBS relative to _SDA_BASE_ in split16a format. */
1571 HOWTO (R_PPC_VLE_SDAREL_LO16A,/* type */
1572 0, /* rightshift */
1573 2, /* size (0 = byte, 1 = short, 2 = long) */
1574 32, /* bitsize */
1575 FALSE, /* pc_relative */
1576 0, /* bitpos */
1577 complain_overflow_bitfield, /* complain_on_overflow */
1578 bfd_elf_generic_reloc, /* special_function */
1579 "R_PPC_VLE_SDAREL_LO16A", /* name */
1580 FALSE, /* partial_inplace */
1581 0, /* src_mask */
1582 0x1f007ff, /* dst_mask */
1583 FALSE), /* pcrel_offset */
1584
1585 /* The 16 LSBS relative to _SDA_BASE_ in split16d format. */
1586 /* This reloc does nothing. */
1587 HOWTO (R_PPC_VLE_SDAREL_LO16D, /* type */
1588 0, /* rightshift */
1589 2, /* size (0 = byte, 1 = short, 2 = long) */
1590 32, /* bitsize */
1591 FALSE, /* pc_relative */
1592 0, /* bitpos */
1593 complain_overflow_bitfield, /* complain_on_overflow */
1594 bfd_elf_generic_reloc, /* special_function */
1595 "R_PPC_VLE_SDAREL_LO16D", /* name */
1596 FALSE, /* partial_inplace */
1597 0, /* src_mask */
1598 0x1f07ff, /* dst_mask */
1599 FALSE), /* pcrel_offset */
1600
1601 /* Bits 16-31 relative to _SDA_BASE_ in split16a format. */
1602 HOWTO (R_PPC_VLE_SDAREL_HI16A, /* type */
1603 0, /* rightshift */
1604 2, /* size (0 = byte, 1 = short, 2 = long) */
1605 32, /* bitsize */
1606 FALSE, /* pc_relative */
1607 0, /* bitpos */
1608 complain_overflow_bitfield, /* complain_on_overflow */
1609 bfd_elf_generic_reloc, /* special_function */
1610 "R_PPC_VLE_SDAREL_HI16A", /* name */
1611 FALSE, /* partial_inplace */
1612 0, /* src_mask */
1613 0x1f007ff, /* dst_mask */
1614 FALSE), /* pcrel_offset */
1615
1616 /* Bits 16-31 relative to _SDA_BASE_ in split16d format. */
1617 HOWTO (R_PPC_VLE_SDAREL_HI16D, /* type */
1618 0, /* rightshift */
1619 2, /* size (0 = byte, 1 = short, 2 = long) */
1620 32, /* bitsize */
1621 FALSE, /* pc_relative */
1622 0, /* bitpos */
1623 complain_overflow_bitfield, /* complain_on_overflow */
1624 bfd_elf_generic_reloc, /* special_function */
1625 "R_PPC_VLE_SDAREL_HI16D", /* name */
1626 FALSE, /* partial_inplace */
1627 0, /* src_mask */
1628 0x1f07ff, /* dst_mask */
1629 FALSE), /* pcrel_offset */
1630
1631 /* Bits 16-31 (HA) relative to _SDA_BASE split16a format. */
1632 HOWTO (R_PPC_VLE_SDAREL_HA16A, /* type */
1633 0, /* rightshift */
1634 2, /* size (0 = byte, 1 = short, 2 = long) */
1635 32, /* bitsize */
1636 FALSE, /* pc_relative */
1637 0, /* bitpos */
1638 complain_overflow_bitfield, /* complain_on_overflow */
1639 bfd_elf_generic_reloc, /* special_function */
1640 "R_PPC_VLE_SDAREL_HA16A", /* name */
1641 FALSE, /* partial_inplace */
1642 0, /* src_mask */
1643 0x1f007ff, /* dst_mask */
1644 FALSE), /* pcrel_offset */
1645
1646 /* Bits 16-31 (HA) relative to _SDA_BASE split16d format. */
1647 HOWTO (R_PPC_VLE_SDAREL_HA16D, /* type */
1648 0, /* rightshift */
1649 2, /* size (0 = byte, 1 = short, 2 = long) */
1650 32, /* bitsize */
1651 FALSE, /* pc_relative */
1652 0, /* bitpos */
1653 complain_overflow_bitfield, /* complain_on_overflow */
1654 bfd_elf_generic_reloc, /* special_function */
1655 "R_PPC_VLE_SDAREL_HA16D", /* name */
1656 FALSE, /* partial_inplace */
1657 0, /* src_mask */
1658 0x1f07ff, /* dst_mask */
1659 FALSE), /* pcrel_offset */
1660
1661 HOWTO (R_PPC_IRELATIVE, /* type */
1662 0, /* rightshift */
1663 2, /* size (0 = byte, 1 = short, 2 = long) */
1664 32, /* bitsize */
1665 FALSE, /* pc_relative */
1666 0, /* bitpos */
1667 complain_overflow_bitfield, /* complain_on_overflow */
1668 bfd_elf_generic_reloc, /* special_function */
1669 "R_PPC_IRELATIVE", /* name */
1670 FALSE, /* partial_inplace */
1671 0, /* src_mask */
1672 0xffffffff, /* dst_mask */
1673 FALSE), /* pcrel_offset */
1674
1675 /* A 16 bit relative relocation. */
1676 HOWTO (R_PPC_REL16, /* type */
1677 0, /* rightshift */
1678 1, /* size (0 = byte, 1 = short, 2 = long) */
1679 16, /* bitsize */
1680 TRUE, /* pc_relative */
1681 0, /* bitpos */
1682 complain_overflow_bitfield, /* complain_on_overflow */
1683 bfd_elf_generic_reloc, /* special_function */
1684 "R_PPC_REL16", /* name */
1685 FALSE, /* partial_inplace */
1686 0, /* src_mask */
1687 0xffff, /* dst_mask */
1688 TRUE), /* pcrel_offset */
1689
1690 /* A 16 bit relative relocation without overflow. */
1691 HOWTO (R_PPC_REL16_LO, /* type */
1692 0, /* rightshift */
1693 1, /* size (0 = byte, 1 = short, 2 = long) */
1694 16, /* bitsize */
1695 TRUE, /* pc_relative */
1696 0, /* bitpos */
1697 complain_overflow_dont,/* complain_on_overflow */
1698 bfd_elf_generic_reloc, /* special_function */
1699 "R_PPC_REL16_LO", /* name */
1700 FALSE, /* partial_inplace */
1701 0, /* src_mask */
1702 0xffff, /* dst_mask */
1703 TRUE), /* pcrel_offset */
1704
1705 /* The high order 16 bits of a relative address. */
1706 HOWTO (R_PPC_REL16_HI, /* type */
1707 16, /* rightshift */
1708 1, /* size (0 = byte, 1 = short, 2 = long) */
1709 16, /* bitsize */
1710 TRUE, /* pc_relative */
1711 0, /* bitpos */
1712 complain_overflow_dont, /* complain_on_overflow */
1713 bfd_elf_generic_reloc, /* special_function */
1714 "R_PPC_REL16_HI", /* name */
1715 FALSE, /* partial_inplace */
1716 0, /* src_mask */
1717 0xffff, /* dst_mask */
1718 TRUE), /* pcrel_offset */
1719
1720 /* The high order 16 bits of a relative address, plus 1 if the contents of
1721 the low 16 bits, treated as a signed number, is negative. */
1722 HOWTO (R_PPC_REL16_HA, /* type */
1723 16, /* rightshift */
1724 1, /* size (0 = byte, 1 = short, 2 = long) */
1725 16, /* bitsize */
1726 TRUE, /* pc_relative */
1727 0, /* bitpos */
1728 complain_overflow_dont, /* complain_on_overflow */
1729 ppc_elf_addr16_ha_reloc, /* special_function */
1730 "R_PPC_REL16_HA", /* name */
1731 FALSE, /* partial_inplace */
1732 0, /* src_mask */
1733 0xffff, /* dst_mask */
1734 TRUE), /* pcrel_offset */
1735
1736 /* GNU extension to record C++ vtable hierarchy. */
1737 HOWTO (R_PPC_GNU_VTINHERIT, /* type */
1738 0, /* rightshift */
1739 0, /* size (0 = byte, 1 = short, 2 = long) */
1740 0, /* bitsize */
1741 FALSE, /* pc_relative */
1742 0, /* bitpos */
1743 complain_overflow_dont, /* complain_on_overflow */
1744 NULL, /* special_function */
1745 "R_PPC_GNU_VTINHERIT", /* name */
1746 FALSE, /* partial_inplace */
1747 0, /* src_mask */
1748 0, /* dst_mask */
1749 FALSE), /* pcrel_offset */
1750
1751 /* GNU extension to record C++ vtable member usage. */
1752 HOWTO (R_PPC_GNU_VTENTRY, /* type */
1753 0, /* rightshift */
1754 0, /* size (0 = byte, 1 = short, 2 = long) */
1755 0, /* bitsize */
1756 FALSE, /* pc_relative */
1757 0, /* bitpos */
1758 complain_overflow_dont, /* complain_on_overflow */
1759 NULL, /* special_function */
1760 "R_PPC_GNU_VTENTRY", /* name */
1761 FALSE, /* partial_inplace */
1762 0, /* src_mask */
1763 0, /* dst_mask */
1764 FALSE), /* pcrel_offset */
1765
1766 /* Phony reloc to handle AIX style TOC entries. */
1767 HOWTO (R_PPC_TOC16, /* type */
1768 0, /* rightshift */
1769 1, /* size (0 = byte, 1 = short, 2 = long) */
1770 16, /* bitsize */
1771 FALSE, /* pc_relative */
1772 0, /* bitpos */
1773 complain_overflow_signed, /* complain_on_overflow */
1774 bfd_elf_generic_reloc, /* special_function */
1775 "R_PPC_TOC16", /* name */
1776 FALSE, /* partial_inplace */
1777 0, /* src_mask */
1778 0xffff, /* dst_mask */
1779 FALSE), /* pcrel_offset */
1780 };
1781
1782 /* External 32-bit PPC structure for PRPSINFO. This structure is
1783 ABI-defined, thus we choose to use char arrays here in order to
1784 avoid dealing with different types in different architectures.
1785
1786 The PPC 32-bit structure uses int for `pr_uid' and `pr_gid' while
1787 most non-PPC architectures use `short int'.
1788
1789 This structure will ultimately be written in the corefile's note
1790 section, as the PRPSINFO. */
1791
1792 struct elf_external_ppc_linux_prpsinfo32
1793 {
1794 char pr_state; /* Numeric process state. */
1795 char pr_sname; /* Char for pr_state. */
1796 char pr_zomb; /* Zombie. */
1797 char pr_nice; /* Nice val. */
1798 char pr_flag[4]; /* Flags. */
1799 char pr_uid[4];
1800 char pr_gid[4];
1801 char pr_pid[4];
1802 char pr_ppid[4];
1803 char pr_pgrp[4];
1804 char pr_sid[4];
1805 char pr_fname[16]; /* Filename of executable. */
1806 char pr_psargs[80]; /* Initial part of arg list. */
1807 };
1808
1809 /* Helper macro to swap (properly handling endianess) things from the
1810 `elf_internal_prpsinfo' structure to the `elf_external_ppc_prpsinfo32'
1811 structure.
1812
1813 Note that FROM should be a pointer, and TO should be the explicit type. */
1814
1815 #define PPC_LINUX_PRPSINFO32_SWAP_FIELDS(abfd, from, to) \
1816 do \
1817 { \
1818 H_PUT_8 (abfd, from->pr_state, &to.pr_state); \
1819 H_PUT_8 (abfd, from->pr_sname, &to.pr_sname); \
1820 H_PUT_8 (abfd, from->pr_zomb, &to.pr_zomb); \
1821 H_PUT_8 (abfd, from->pr_nice, &to.pr_nice); \
1822 H_PUT_32 (abfd, from->pr_flag, to.pr_flag); \
1823 H_PUT_32 (abfd, from->pr_uid, to.pr_uid); \
1824 H_PUT_32 (abfd, from->pr_gid, to.pr_gid); \
1825 H_PUT_32 (abfd, from->pr_pid, to.pr_pid); \
1826 H_PUT_32 (abfd, from->pr_ppid, to.pr_ppid); \
1827 H_PUT_32 (abfd, from->pr_pgrp, to.pr_pgrp); \
1828 H_PUT_32 (abfd, from->pr_sid, to.pr_sid); \
1829 strncpy (to.pr_fname, from->pr_fname, sizeof (to.pr_fname)); \
1830 strncpy (to.pr_psargs, from->pr_psargs, sizeof (to.pr_psargs)); \
1831 } while (0)
1832
1833 \f
1834 /* Initialize the ppc_elf_howto_table, so that linear accesses can be done. */
1835
1836 static void
1837 ppc_elf_howto_init (void)
1838 {
1839 unsigned int i, type;
1840
1841 for (i = 0;
1842 i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]);
1843 i++)
1844 {
1845 type = ppc_elf_howto_raw[i].type;
1846 if (type >= (sizeof (ppc_elf_howto_table)
1847 / sizeof (ppc_elf_howto_table[0])))
1848 abort ();
1849 ppc_elf_howto_table[type] = &ppc_elf_howto_raw[i];
1850 }
1851 }
1852
1853 static reloc_howto_type *
1854 ppc_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1855 bfd_reloc_code_real_type code)
1856 {
1857 enum elf_ppc_reloc_type r;
1858
1859 /* Initialize howto table if not already done. */
1860 if (!ppc_elf_howto_table[R_PPC_ADDR32])
1861 ppc_elf_howto_init ();
1862
1863 switch (code)
1864 {
1865 default:
1866 return NULL;
1867
1868 case BFD_RELOC_NONE: r = R_PPC_NONE; break;
1869 case BFD_RELOC_32: r = R_PPC_ADDR32; break;
1870 case BFD_RELOC_PPC_BA26: r = R_PPC_ADDR24; break;
1871 case BFD_RELOC_PPC64_ADDR16_DS:
1872 case BFD_RELOC_16: r = R_PPC_ADDR16; break;
1873 case BFD_RELOC_PPC64_ADDR16_LO_DS:
1874 case BFD_RELOC_LO16: r = R_PPC_ADDR16_LO; break;
1875 case BFD_RELOC_HI16: r = R_PPC_ADDR16_HI; break;
1876 case BFD_RELOC_HI16_S: r = R_PPC_ADDR16_HA; break;
1877 case BFD_RELOC_PPC_BA16: r = R_PPC_ADDR14; break;
1878 case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC_ADDR14_BRTAKEN; break;
1879 case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC_ADDR14_BRNTAKEN; break;
1880 case BFD_RELOC_PPC_B26: r = R_PPC_REL24; break;
1881 case BFD_RELOC_PPC_B16: r = R_PPC_REL14; break;
1882 case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC_REL14_BRTAKEN; break;
1883 case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC_REL14_BRNTAKEN; break;
1884 case BFD_RELOC_PPC64_GOT16_DS:
1885 case BFD_RELOC_16_GOTOFF: r = R_PPC_GOT16; break;
1886 case BFD_RELOC_PPC64_GOT16_LO_DS:
1887 case BFD_RELOC_LO16_GOTOFF: r = R_PPC_GOT16_LO; break;
1888 case BFD_RELOC_HI16_GOTOFF: r = R_PPC_GOT16_HI; break;
1889 case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC_GOT16_HA; break;
1890 case BFD_RELOC_24_PLT_PCREL: r = R_PPC_PLTREL24; break;
1891 case BFD_RELOC_PPC_COPY: r = R_PPC_COPY; break;
1892 case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC_GLOB_DAT; break;
1893 case BFD_RELOC_PPC_LOCAL24PC: r = R_PPC_LOCAL24PC; break;
1894 case BFD_RELOC_32_PCREL: r = R_PPC_REL32; break;
1895 case BFD_RELOC_32_PLTOFF: r = R_PPC_PLT32; break;
1896 case BFD_RELOC_32_PLT_PCREL: r = R_PPC_PLTREL32; break;
1897 case BFD_RELOC_PPC64_PLT16_LO_DS:
1898 case BFD_RELOC_LO16_PLTOFF: r = R_PPC_PLT16_LO; break;
1899 case BFD_RELOC_HI16_PLTOFF: r = R_PPC_PLT16_HI; break;
1900 case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC_PLT16_HA; break;
1901 case BFD_RELOC_GPREL16: r = R_PPC_SDAREL16; break;
1902 case BFD_RELOC_PPC64_SECTOFF_DS:
1903 case BFD_RELOC_16_BASEREL: r = R_PPC_SECTOFF; break;
1904 case BFD_RELOC_PPC64_SECTOFF_LO_DS:
1905 case BFD_RELOC_LO16_BASEREL: r = R_PPC_SECTOFF_LO; break;
1906 case BFD_RELOC_HI16_BASEREL: r = R_PPC_SECTOFF_HI; break;
1907 case BFD_RELOC_HI16_S_BASEREL: r = R_PPC_SECTOFF_HA; break;
1908 case BFD_RELOC_CTOR: r = R_PPC_ADDR32; break;
1909 case BFD_RELOC_PPC64_TOC16_DS:
1910 case BFD_RELOC_PPC_TOC16: r = R_PPC_TOC16; break;
1911 case BFD_RELOC_PPC_TLS: r = R_PPC_TLS; break;
1912 case BFD_RELOC_PPC_TLSGD: r = R_PPC_TLSGD; break;
1913 case BFD_RELOC_PPC_TLSLD: r = R_PPC_TLSLD; break;
1914 case BFD_RELOC_PPC_DTPMOD: r = R_PPC_DTPMOD32; break;
1915 case BFD_RELOC_PPC64_TPREL16_DS:
1916 case BFD_RELOC_PPC_TPREL16: r = R_PPC_TPREL16; break;
1917 case BFD_RELOC_PPC64_TPREL16_LO_DS:
1918 case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC_TPREL16_LO; break;
1919 case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC_TPREL16_HI; break;
1920 case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC_TPREL16_HA; break;
1921 case BFD_RELOC_PPC_TPREL: r = R_PPC_TPREL32; break;
1922 case BFD_RELOC_PPC64_DTPREL16_DS:
1923 case BFD_RELOC_PPC_DTPREL16: r = R_PPC_DTPREL16; break;
1924 case BFD_RELOC_PPC64_DTPREL16_LO_DS:
1925 case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC_DTPREL16_LO; break;
1926 case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC_DTPREL16_HI; break;
1927 case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC_DTPREL16_HA; break;
1928 case BFD_RELOC_PPC_DTPREL: r = R_PPC_DTPREL32; break;
1929 case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC_GOT_TLSGD16; break;
1930 case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC_GOT_TLSGD16_LO; break;
1931 case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC_GOT_TLSGD16_HI; break;
1932 case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC_GOT_TLSGD16_HA; break;
1933 case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC_GOT_TLSLD16; break;
1934 case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC_GOT_TLSLD16_LO; break;
1935 case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC_GOT_TLSLD16_HI; break;
1936 case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC_GOT_TLSLD16_HA; break;
1937 case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC_GOT_TPREL16; break;
1938 case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC_GOT_TPREL16_LO; break;
1939 case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC_GOT_TPREL16_HI; break;
1940 case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC_GOT_TPREL16_HA; break;
1941 case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC_GOT_DTPREL16; break;
1942 case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC_GOT_DTPREL16_LO; break;
1943 case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC_GOT_DTPREL16_HI; break;
1944 case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC_GOT_DTPREL16_HA; break;
1945 case BFD_RELOC_PPC_EMB_NADDR32: r = R_PPC_EMB_NADDR32; break;
1946 case BFD_RELOC_PPC_EMB_NADDR16: r = R_PPC_EMB_NADDR16; break;
1947 case BFD_RELOC_PPC_EMB_NADDR16_LO: r = R_PPC_EMB_NADDR16_LO; break;
1948 case BFD_RELOC_PPC_EMB_NADDR16_HI: r = R_PPC_EMB_NADDR16_HI; break;
1949 case BFD_RELOC_PPC_EMB_NADDR16_HA: r = R_PPC_EMB_NADDR16_HA; break;
1950 case BFD_RELOC_PPC_EMB_SDAI16: r = R_PPC_EMB_SDAI16; break;
1951 case BFD_RELOC_PPC_EMB_SDA2I16: r = R_PPC_EMB_SDA2I16; break;
1952 case BFD_RELOC_PPC_EMB_SDA2REL: r = R_PPC_EMB_SDA2REL; break;
1953 case BFD_RELOC_PPC_EMB_SDA21: r = R_PPC_EMB_SDA21; break;
1954 case BFD_RELOC_PPC_EMB_MRKREF: r = R_PPC_EMB_MRKREF; break;
1955 case BFD_RELOC_PPC_EMB_RELSEC16: r = R_PPC_EMB_RELSEC16; break;
1956 case BFD_RELOC_PPC_EMB_RELST_LO: r = R_PPC_EMB_RELST_LO; break;
1957 case BFD_RELOC_PPC_EMB_RELST_HI: r = R_PPC_EMB_RELST_HI; break;
1958 case BFD_RELOC_PPC_EMB_RELST_HA: r = R_PPC_EMB_RELST_HA; break;
1959 case BFD_RELOC_PPC_EMB_BIT_FLD: r = R_PPC_EMB_BIT_FLD; break;
1960 case BFD_RELOC_PPC_EMB_RELSDA: r = R_PPC_EMB_RELSDA; break;
1961 case BFD_RELOC_PPC_VLE_REL8: r = R_PPC_VLE_REL8; break;
1962 case BFD_RELOC_PPC_VLE_REL15: r = R_PPC_VLE_REL15; break;
1963 case BFD_RELOC_PPC_VLE_REL24: r = R_PPC_VLE_REL24; break;
1964 case BFD_RELOC_PPC_VLE_LO16A: r = R_PPC_VLE_LO16A; break;
1965 case BFD_RELOC_PPC_VLE_LO16D: r = R_PPC_VLE_LO16D; break;
1966 case BFD_RELOC_PPC_VLE_HI16A: r = R_PPC_VLE_HI16A; break;
1967 case BFD_RELOC_PPC_VLE_HI16D: r = R_PPC_VLE_HI16D; break;
1968 case BFD_RELOC_PPC_VLE_HA16A: r = R_PPC_VLE_HA16A; break;
1969 case BFD_RELOC_PPC_VLE_HA16D: r = R_PPC_VLE_HA16D; break;
1970 case BFD_RELOC_PPC_VLE_SDA21: r = R_PPC_VLE_SDA21; break;
1971 case BFD_RELOC_PPC_VLE_SDA21_LO: r = R_PPC_VLE_SDA21_LO; break;
1972 case BFD_RELOC_PPC_VLE_SDAREL_LO16A:
1973 r = R_PPC_VLE_SDAREL_LO16A;
1974 break;
1975 case BFD_RELOC_PPC_VLE_SDAREL_LO16D:
1976 r = R_PPC_VLE_SDAREL_LO16D;
1977 break;
1978 case BFD_RELOC_PPC_VLE_SDAREL_HI16A:
1979 r = R_PPC_VLE_SDAREL_HI16A;
1980 break;
1981 case BFD_RELOC_PPC_VLE_SDAREL_HI16D:
1982 r = R_PPC_VLE_SDAREL_HI16D;
1983 break;
1984 case BFD_RELOC_PPC_VLE_SDAREL_HA16A:
1985 r = R_PPC_VLE_SDAREL_HA16A;
1986 break;
1987 case BFD_RELOC_PPC_VLE_SDAREL_HA16D:
1988 r = R_PPC_VLE_SDAREL_HA16D;
1989 break;
1990 case BFD_RELOC_16_PCREL: r = R_PPC_REL16; break;
1991 case BFD_RELOC_LO16_PCREL: r = R_PPC_REL16_LO; break;
1992 case BFD_RELOC_HI16_PCREL: r = R_PPC_REL16_HI; break;
1993 case BFD_RELOC_HI16_S_PCREL: r = R_PPC_REL16_HA; break;
1994 case BFD_RELOC_VTABLE_INHERIT: r = R_PPC_GNU_VTINHERIT; break;
1995 case BFD_RELOC_VTABLE_ENTRY: r = R_PPC_GNU_VTENTRY; break;
1996 }
1997
1998 return ppc_elf_howto_table[r];
1999 };
2000
2001 static reloc_howto_type *
2002 ppc_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
2003 const char *r_name)
2004 {
2005 unsigned int i;
2006
2007 for (i = 0;
2008 i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]);
2009 i++)
2010 if (ppc_elf_howto_raw[i].name != NULL
2011 && strcasecmp (ppc_elf_howto_raw[i].name, r_name) == 0)
2012 return &ppc_elf_howto_raw[i];
2013
2014 return NULL;
2015 }
2016
2017 /* Set the howto pointer for a PowerPC ELF reloc. */
2018
2019 static void
2020 ppc_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED,
2021 arelent *cache_ptr,
2022 Elf_Internal_Rela *dst)
2023 {
2024 /* Initialize howto table if not already done. */
2025 if (!ppc_elf_howto_table[R_PPC_ADDR32])
2026 ppc_elf_howto_init ();
2027
2028 BFD_ASSERT (ELF32_R_TYPE (dst->r_info) < (unsigned int) R_PPC_max);
2029 cache_ptr->howto = ppc_elf_howto_table[ELF32_R_TYPE (dst->r_info)];
2030
2031 /* Just because the above assert didn't trigger doesn't mean that
2032 ELF32_R_TYPE (dst->r_info) is necessarily a valid relocation. */
2033 if (!cache_ptr->howto)
2034 {
2035 (*_bfd_error_handler) (_("%B: invalid relocation type %d"),
2036 abfd, ELF32_R_TYPE (dst->r_info));
2037 bfd_set_error (bfd_error_bad_value);
2038
2039 cache_ptr->howto = ppc_elf_howto_table[R_PPC_NONE];
2040 }
2041 }
2042
2043 /* Handle the R_PPC_ADDR16_HA and R_PPC_REL16_HA relocs. */
2044
2045 static bfd_reloc_status_type
2046 ppc_elf_addr16_ha_reloc (bfd *abfd ATTRIBUTE_UNUSED,
2047 arelent *reloc_entry,
2048 asymbol *symbol,
2049 void *data ATTRIBUTE_UNUSED,
2050 asection *input_section,
2051 bfd *output_bfd,
2052 char **error_message ATTRIBUTE_UNUSED)
2053 {
2054 bfd_vma relocation;
2055
2056 if (output_bfd != NULL)
2057 {
2058 reloc_entry->address += input_section->output_offset;
2059 return bfd_reloc_ok;
2060 }
2061
2062 if (reloc_entry->address > bfd_get_section_limit (abfd, input_section))
2063 return bfd_reloc_outofrange;
2064
2065 if (bfd_is_com_section (symbol->section))
2066 relocation = 0;
2067 else
2068 relocation = symbol->value;
2069
2070 relocation += symbol->section->output_section->vma;
2071 relocation += symbol->section->output_offset;
2072 relocation += reloc_entry->addend;
2073 if (reloc_entry->howto->pc_relative)
2074 relocation -= reloc_entry->address;
2075
2076 reloc_entry->addend += (relocation & 0x8000) << 1;
2077
2078 return bfd_reloc_continue;
2079 }
2080
2081 static bfd_reloc_status_type
2082 ppc_elf_unhandled_reloc (bfd *abfd,
2083 arelent *reloc_entry,
2084 asymbol *symbol,
2085 void *data,
2086 asection *input_section,
2087 bfd *output_bfd,
2088 char **error_message)
2089 {
2090 /* If this is a relocatable link (output_bfd test tells us), just
2091 call the generic function. Any adjustment will be done at final
2092 link time. */
2093 if (output_bfd != NULL)
2094 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2095 input_section, output_bfd, error_message);
2096
2097 if (error_message != NULL)
2098 {
2099 static char buf[60];
2100 sprintf (buf, _("generic linker can't handle %s"),
2101 reloc_entry->howto->name);
2102 *error_message = buf;
2103 }
2104 return bfd_reloc_dangerous;
2105 }
2106 \f
2107 /* Sections created by the linker. */
2108
2109 typedef struct elf_linker_section
2110 {
2111 /* Pointer to the bfd section. */
2112 asection *section;
2113 /* Section name. */
2114 const char *name;
2115 /* Associated bss section name. */
2116 const char *bss_name;
2117 /* Associated symbol name. */
2118 const char *sym_name;
2119 /* Associated symbol. */
2120 struct elf_link_hash_entry *sym;
2121 } elf_linker_section_t;
2122
2123 /* Linked list of allocated pointer entries. This hangs off of the
2124 symbol lists, and provides allows us to return different pointers,
2125 based on different addend's. */
2126
2127 typedef struct elf_linker_section_pointers
2128 {
2129 /* next allocated pointer for this symbol */
2130 struct elf_linker_section_pointers *next;
2131 /* offset of pointer from beginning of section */
2132 bfd_vma offset;
2133 /* addend used */
2134 bfd_vma addend;
2135 /* which linker section this is */
2136 elf_linker_section_t *lsect;
2137 } elf_linker_section_pointers_t;
2138
2139 struct ppc_elf_obj_tdata
2140 {
2141 struct elf_obj_tdata elf;
2142
2143 /* A mapping from local symbols to offsets into the various linker
2144 sections added. This is index by the symbol index. */
2145 elf_linker_section_pointers_t **linker_section_pointers;
2146
2147 /* Flags used to auto-detect plt type. */
2148 unsigned int makes_plt_call : 1;
2149 unsigned int has_rel16 : 1;
2150 };
2151
2152 #define ppc_elf_tdata(bfd) \
2153 ((struct ppc_elf_obj_tdata *) (bfd)->tdata.any)
2154
2155 #define elf_local_ptr_offsets(bfd) \
2156 (ppc_elf_tdata (bfd)->linker_section_pointers)
2157
2158 #define is_ppc_elf(bfd) \
2159 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
2160 && elf_object_id (bfd) == PPC32_ELF_DATA)
2161
2162 /* Override the generic function because we store some extras. */
2163
2164 static bfd_boolean
2165 ppc_elf_mkobject (bfd *abfd)
2166 {
2167 return bfd_elf_allocate_object (abfd, sizeof (struct ppc_elf_obj_tdata),
2168 PPC32_ELF_DATA);
2169 }
2170
2171 /* Fix bad default arch selected for a 32 bit input bfd when the
2172 default is 64 bit. */
2173
2174 static bfd_boolean
2175 ppc_elf_object_p (bfd *abfd)
2176 {
2177 if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 64)
2178 {
2179 Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd);
2180
2181 if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS32)
2182 {
2183 /* Relies on arch after 64 bit default being 32 bit default. */
2184 abfd->arch_info = abfd->arch_info->next;
2185 BFD_ASSERT (abfd->arch_info->bits_per_word == 32);
2186 }
2187 }
2188 return TRUE;
2189 }
2190
2191 /* Function to set whether a module needs the -mrelocatable bit set. */
2192
2193 static bfd_boolean
2194 ppc_elf_set_private_flags (bfd *abfd, flagword flags)
2195 {
2196 BFD_ASSERT (!elf_flags_init (abfd)
2197 || elf_elfheader (abfd)->e_flags == flags);
2198
2199 elf_elfheader (abfd)->e_flags = flags;
2200 elf_flags_init (abfd) = TRUE;
2201 return TRUE;
2202 }
2203
2204 /* Support for core dump NOTE sections. */
2205
2206 static bfd_boolean
2207 ppc_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
2208 {
2209 int offset;
2210 unsigned int size;
2211
2212 switch (note->descsz)
2213 {
2214 default:
2215 return FALSE;
2216
2217 case 268: /* Linux/PPC. */
2218 /* pr_cursig */
2219 elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12);
2220
2221 /* pr_pid */
2222 elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 24);
2223
2224 /* pr_reg */
2225 offset = 72;
2226 size = 192;
2227
2228 break;
2229 }
2230
2231 /* Make a ".reg/999" section. */
2232 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
2233 size, note->descpos + offset);
2234 }
2235
2236 static bfd_boolean
2237 ppc_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
2238 {
2239 switch (note->descsz)
2240 {
2241 default:
2242 return FALSE;
2243
2244 case 128: /* Linux/PPC elf_prpsinfo. */
2245 elf_tdata (abfd)->core->pid
2246 = bfd_get_32 (abfd, note->descdata + 16);
2247 elf_tdata (abfd)->core->program
2248 = _bfd_elfcore_strndup (abfd, note->descdata + 32, 16);
2249 elf_tdata (abfd)->core->command
2250 = _bfd_elfcore_strndup (abfd, note->descdata + 48, 80);
2251 }
2252
2253 /* Note that for some reason, a spurious space is tacked
2254 onto the end of the args in some (at least one anyway)
2255 implementations, so strip it off if it exists. */
2256
2257 {
2258 char *command = elf_tdata (abfd)->core->command;
2259 int n = strlen (command);
2260
2261 if (0 < n && command[n - 1] == ' ')
2262 command[n - 1] = '\0';
2263 }
2264
2265 return TRUE;
2266 }
2267
2268 char *
2269 elfcore_write_ppc_linux_prpsinfo32 (bfd *abfd, char *buf, int *bufsiz,
2270 const struct elf_internal_linux_prpsinfo *prpsinfo)
2271 {
2272 struct elf_external_ppc_linux_prpsinfo32 data;
2273
2274 memset (&data, 0, sizeof (data));
2275 PPC_LINUX_PRPSINFO32_SWAP_FIELDS (abfd, prpsinfo, data);
2276
2277 return elfcore_write_note (abfd, buf, bufsiz,
2278 "CORE", NT_PRPSINFO, &data, sizeof (data));
2279 }
2280
2281 static char *
2282 ppc_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type, ...)
2283 {
2284 switch (note_type)
2285 {
2286 default:
2287 return NULL;
2288
2289 case NT_PRPSINFO:
2290 {
2291 char data[128];
2292 va_list ap;
2293
2294 va_start (ap, note_type);
2295 memset (data, 0, sizeof (data));
2296 strncpy (data + 32, va_arg (ap, const char *), 16);
2297 strncpy (data + 48, va_arg (ap, const char *), 80);
2298 va_end (ap);
2299 return elfcore_write_note (abfd, buf, bufsiz,
2300 "CORE", note_type, data, sizeof (data));
2301 }
2302
2303 case NT_PRSTATUS:
2304 {
2305 char data[268];
2306 va_list ap;
2307 long pid;
2308 int cursig;
2309 const void *greg;
2310
2311 va_start (ap, note_type);
2312 memset (data, 0, 72);
2313 pid = va_arg (ap, long);
2314 bfd_put_32 (abfd, pid, data + 24);
2315 cursig = va_arg (ap, int);
2316 bfd_put_16 (abfd, cursig, data + 12);
2317 greg = va_arg (ap, const void *);
2318 memcpy (data + 72, greg, 192);
2319 memset (data + 264, 0, 4);
2320 va_end (ap);
2321 return elfcore_write_note (abfd, buf, bufsiz,
2322 "CORE", note_type, data, sizeof (data));
2323 }
2324 }
2325 }
2326
2327 static flagword
2328 ppc_elf_lookup_section_flags (char *flag_name)
2329 {
2330
2331 if (!strcmp (flag_name, "SHF_PPC_VLE"))
2332 return SHF_PPC_VLE;
2333
2334 return 0;
2335 }
2336
2337 /* Add the VLE flag if required. */
2338
2339 bfd_boolean
2340 ppc_elf_section_processing (bfd *abfd, Elf_Internal_Shdr *shdr)
2341 {
2342 if (bfd_get_mach (abfd) == bfd_mach_ppc_vle
2343 && (shdr->sh_flags & SHF_EXECINSTR) != 0)
2344 shdr->sh_flags |= SHF_PPC_VLE;
2345
2346 return TRUE;
2347 }
2348
2349 /* Return address for Ith PLT stub in section PLT, for relocation REL
2350 or (bfd_vma) -1 if it should not be included. */
2351
2352 static bfd_vma
2353 ppc_elf_plt_sym_val (bfd_vma i ATTRIBUTE_UNUSED,
2354 const asection *plt ATTRIBUTE_UNUSED,
2355 const arelent *rel)
2356 {
2357 return rel->address;
2358 }
2359
2360 /* Handle a PowerPC specific section when reading an object file. This
2361 is called when bfd_section_from_shdr finds a section with an unknown
2362 type. */
2363
2364 static bfd_boolean
2365 ppc_elf_section_from_shdr (bfd *abfd,
2366 Elf_Internal_Shdr *hdr,
2367 const char *name,
2368 int shindex)
2369 {
2370 asection *newsect;
2371 flagword flags;
2372
2373 if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
2374 return FALSE;
2375
2376 newsect = hdr->bfd_section;
2377 flags = bfd_get_section_flags (abfd, newsect);
2378 if (hdr->sh_flags & SHF_EXCLUDE)
2379 flags |= SEC_EXCLUDE;
2380
2381 if (hdr->sh_type == SHT_ORDERED)
2382 flags |= SEC_SORT_ENTRIES;
2383
2384 bfd_set_section_flags (abfd, newsect, flags);
2385 return TRUE;
2386 }
2387
2388 /* Set up any other section flags and such that may be necessary. */
2389
2390 static bfd_boolean
2391 ppc_elf_fake_sections (bfd *abfd ATTRIBUTE_UNUSED,
2392 Elf_Internal_Shdr *shdr,
2393 asection *asect)
2394 {
2395 if ((asect->flags & SEC_SORT_ENTRIES) != 0)
2396 shdr->sh_type = SHT_ORDERED;
2397
2398 return TRUE;
2399 }
2400
2401 /* If we have .sbss2 or .PPC.EMB.sbss0 output sections, we
2402 need to bump up the number of section headers. */
2403
2404 static int
2405 ppc_elf_additional_program_headers (bfd *abfd,
2406 struct bfd_link_info *info ATTRIBUTE_UNUSED)
2407 {
2408 asection *s;
2409 int ret = 0;
2410
2411 s = bfd_get_section_by_name (abfd, ".sbss2");
2412 if (s != NULL && (s->flags & SEC_ALLOC) != 0)
2413 ++ret;
2414
2415 s = bfd_get_section_by_name (abfd, ".PPC.EMB.sbss0");
2416 if (s != NULL && (s->flags & SEC_ALLOC) != 0)
2417 ++ret;
2418
2419 return ret;
2420 }
2421
2422 /* Modify the segment map for VLE executables. */
2423
2424 bfd_boolean
2425 ppc_elf_modify_segment_map (bfd *abfd,
2426 struct bfd_link_info *info ATTRIBUTE_UNUSED)
2427 {
2428 struct elf_segment_map *m, *n;
2429 bfd_size_type amt;
2430 unsigned int j, k;
2431 bfd_boolean sect0_vle, sectj_vle;
2432
2433 /* At this point in the link, output sections have already been sorted by
2434 LMA and assigned to segments. All that is left to do is to ensure
2435 there is no mixing of VLE & non-VLE sections in a text segment.
2436 If we find that case, we split the segment.
2437 We maintain the original output section order. */
2438
2439 for (m = elf_seg_map (abfd); m != NULL; m = m->next)
2440 {
2441 if (m->count == 0)
2442 continue;
2443
2444 sect0_vle = (elf_section_flags (m->sections[0]) & SHF_PPC_VLE) != 0;
2445 for (j = 1; j < m->count; ++j)
2446 {
2447 sectj_vle = (elf_section_flags (m->sections[j]) & SHF_PPC_VLE) != 0;
2448
2449 if (sectj_vle != sect0_vle)
2450 break;
2451 }
2452 if (j >= m->count)
2453 continue;
2454
2455 /* sections 0..j-1 stay in this (current) segment,
2456 the remainder are put in a new segment.
2457 The scan resumes with the new segment. */
2458
2459 /* Fix the new segment. */
2460 amt = sizeof (struct elf_segment_map);
2461 amt += (m->count - j - 1) * sizeof (asection *);
2462 n = (struct elf_segment_map *) bfd_zalloc (abfd, amt);
2463 if (n == NULL)
2464 return FALSE;
2465
2466 n->p_type = PT_LOAD;
2467 n->p_flags = PF_X | PF_R;
2468 if (sectj_vle)
2469 n->p_flags |= PF_PPC_VLE;
2470 n->count = m->count - j;
2471 for (k = 0; k < n->count; ++k)
2472 {
2473 n->sections[k] = m->sections[j+k];
2474 m->sections[j+k] = NULL;
2475 }
2476 n->next = m->next;
2477 m->next = n;
2478
2479 /* Fix the current segment */
2480 m->count = j;
2481 }
2482
2483 return TRUE;
2484 }
2485
2486 /* Add extra PPC sections -- Note, for now, make .sbss2 and
2487 .PPC.EMB.sbss0 a normal section, and not a bss section so
2488 that the linker doesn't crater when trying to make more than
2489 2 sections. */
2490
2491 static const struct bfd_elf_special_section ppc_elf_special_sections[] =
2492 {
2493 { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, SHF_ALLOC + SHF_EXECINSTR },
2494 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2495 { STRING_COMMA_LEN (".sbss2"), -2, SHT_PROGBITS, SHF_ALLOC },
2496 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2497 { STRING_COMMA_LEN (".sdata2"), -2, SHT_PROGBITS, SHF_ALLOC },
2498 { STRING_COMMA_LEN (".tags"), 0, SHT_ORDERED, SHF_ALLOC },
2499 { STRING_COMMA_LEN (".PPC.EMB.apuinfo"), 0, SHT_NOTE, 0 },
2500 { STRING_COMMA_LEN (".PPC.EMB.sbss0"), 0, SHT_PROGBITS, SHF_ALLOC },
2501 { STRING_COMMA_LEN (".PPC.EMB.sdata0"), 0, SHT_PROGBITS, SHF_ALLOC },
2502 { NULL, 0, 0, 0, 0 }
2503 };
2504
2505 /* This is what we want for new plt/got. */
2506 static struct bfd_elf_special_section ppc_alt_plt =
2507 { STRING_COMMA_LEN (".plt"), 0, SHT_PROGBITS, SHF_ALLOC };
2508
2509 static const struct bfd_elf_special_section *
2510 ppc_elf_get_sec_type_attr (bfd *abfd ATTRIBUTE_UNUSED, asection *sec)
2511 {
2512 const struct bfd_elf_special_section *ssect;
2513
2514 /* See if this is one of the special sections. */
2515 if (sec->name == NULL)
2516 return NULL;
2517
2518 ssect = _bfd_elf_get_special_section (sec->name, ppc_elf_special_sections,
2519 sec->use_rela_p);
2520 if (ssect != NULL)
2521 {
2522 if (ssect == ppc_elf_special_sections && (sec->flags & SEC_LOAD) != 0)
2523 ssect = &ppc_alt_plt;
2524 return ssect;
2525 }
2526
2527 return _bfd_elf_get_sec_type_attr (abfd, sec);
2528 }
2529 \f
2530 /* Very simple linked list structure for recording apuinfo values. */
2531 typedef struct apuinfo_list
2532 {
2533 struct apuinfo_list *next;
2534 unsigned long value;
2535 }
2536 apuinfo_list;
2537
2538 static apuinfo_list *head;
2539 static bfd_boolean apuinfo_set;
2540
2541 static void
2542 apuinfo_list_init (void)
2543 {
2544 head = NULL;
2545 apuinfo_set = FALSE;
2546 }
2547
2548 static void
2549 apuinfo_list_add (unsigned long value)
2550 {
2551 apuinfo_list *entry = head;
2552
2553 while (entry != NULL)
2554 {
2555 if (entry->value == value)
2556 return;
2557 entry = entry->next;
2558 }
2559
2560 entry = bfd_malloc (sizeof (* entry));
2561 if (entry == NULL)
2562 return;
2563
2564 entry->value = value;
2565 entry->next = head;
2566 head = entry;
2567 }
2568
2569 static unsigned
2570 apuinfo_list_length (void)
2571 {
2572 apuinfo_list *entry;
2573 unsigned long count;
2574
2575 for (entry = head, count = 0;
2576 entry;
2577 entry = entry->next)
2578 ++ count;
2579
2580 return count;
2581 }
2582
2583 static inline unsigned long
2584 apuinfo_list_element (unsigned long number)
2585 {
2586 apuinfo_list * entry;
2587
2588 for (entry = head;
2589 entry && number --;
2590 entry = entry->next)
2591 ;
2592
2593 return entry ? entry->value : 0;
2594 }
2595
2596 static void
2597 apuinfo_list_finish (void)
2598 {
2599 apuinfo_list *entry;
2600
2601 for (entry = head; entry;)
2602 {
2603 apuinfo_list *next = entry->next;
2604 free (entry);
2605 entry = next;
2606 }
2607
2608 head = NULL;
2609 }
2610
2611 #define APUINFO_SECTION_NAME ".PPC.EMB.apuinfo"
2612 #define APUINFO_LABEL "APUinfo"
2613
2614 /* Scan the input BFDs and create a linked list of
2615 the APUinfo values that will need to be emitted. */
2616
2617 static void
2618 ppc_elf_begin_write_processing (bfd *abfd, struct bfd_link_info *link_info)
2619 {
2620 bfd *ibfd;
2621 asection *asec;
2622 char *buffer = NULL;
2623 bfd_size_type largest_input_size = 0;
2624 unsigned i;
2625 unsigned long length;
2626 const char *error_message = NULL;
2627
2628 if (link_info == NULL)
2629 return;
2630
2631 apuinfo_list_init ();
2632
2633 /* Read in the input sections contents. */
2634 for (ibfd = link_info->input_bfds; ibfd; ibfd = ibfd->link_next)
2635 {
2636 unsigned long datum;
2637
2638 asec = bfd_get_section_by_name (ibfd, APUINFO_SECTION_NAME);
2639 if (asec == NULL)
2640 continue;
2641
2642 error_message = _("corrupt %s section in %B");
2643 length = asec->size;
2644 if (length < 20)
2645 goto fail;
2646
2647 apuinfo_set = TRUE;
2648 if (largest_input_size < asec->size)
2649 {
2650 if (buffer)
2651 free (buffer);
2652 largest_input_size = asec->size;
2653 buffer = bfd_malloc (largest_input_size);
2654 if (!buffer)
2655 return;
2656 }
2657
2658 if (bfd_seek (ibfd, asec->filepos, SEEK_SET) != 0
2659 || (bfd_bread (buffer, length, ibfd) != length))
2660 {
2661 error_message = _("unable to read in %s section from %B");
2662 goto fail;
2663 }
2664
2665 /* Verify the contents of the header. Note - we have to
2666 extract the values this way in order to allow for a
2667 host whose endian-ness is different from the target. */
2668 datum = bfd_get_32 (ibfd, buffer);
2669 if (datum != sizeof APUINFO_LABEL)
2670 goto fail;
2671
2672 datum = bfd_get_32 (ibfd, buffer + 8);
2673 if (datum != 0x2)
2674 goto fail;
2675
2676 if (strcmp (buffer + 12, APUINFO_LABEL) != 0)
2677 goto fail;
2678
2679 /* Get the number of bytes used for apuinfo entries. */
2680 datum = bfd_get_32 (ibfd, buffer + 4);
2681 if (datum + 20 != length)
2682 goto fail;
2683
2684 /* Scan the apuinfo section, building a list of apuinfo numbers. */
2685 for (i = 0; i < datum; i += 4)
2686 apuinfo_list_add (bfd_get_32 (ibfd, buffer + 20 + i));
2687 }
2688
2689 error_message = NULL;
2690
2691 if (apuinfo_set)
2692 {
2693 /* Compute the size of the output section. */
2694 unsigned num_entries = apuinfo_list_length ();
2695
2696 /* Set the output section size, if it exists. */
2697 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2698
2699 if (asec && ! bfd_set_section_size (abfd, asec, 20 + num_entries * 4))
2700 {
2701 ibfd = abfd;
2702 error_message = _("warning: unable to set size of %s section in %B");
2703 }
2704 }
2705
2706 fail:
2707 if (buffer)
2708 free (buffer);
2709
2710 if (error_message)
2711 (*_bfd_error_handler) (error_message, ibfd, APUINFO_SECTION_NAME);
2712 }
2713
2714 /* Prevent the output section from accumulating the input sections'
2715 contents. We have already stored this in our linked list structure. */
2716
2717 static bfd_boolean
2718 ppc_elf_write_section (bfd *abfd ATTRIBUTE_UNUSED,
2719 struct bfd_link_info *link_info ATTRIBUTE_UNUSED,
2720 asection *asec,
2721 bfd_byte *contents ATTRIBUTE_UNUSED)
2722 {
2723 return apuinfo_set && strcmp (asec->name, APUINFO_SECTION_NAME) == 0;
2724 }
2725
2726 /* Finally we can generate the output section. */
2727
2728 static void
2729 ppc_elf_final_write_processing (bfd *abfd, bfd_boolean linker ATTRIBUTE_UNUSED)
2730 {
2731 bfd_byte *buffer;
2732 asection *asec;
2733 unsigned i;
2734 unsigned num_entries;
2735 bfd_size_type length;
2736
2737 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2738 if (asec == NULL)
2739 return;
2740
2741 if (!apuinfo_set)
2742 return;
2743
2744 length = asec->size;
2745 if (length < 20)
2746 return;
2747
2748 buffer = bfd_malloc (length);
2749 if (buffer == NULL)
2750 {
2751 (*_bfd_error_handler)
2752 (_("failed to allocate space for new APUinfo section."));
2753 return;
2754 }
2755
2756 /* Create the apuinfo header. */
2757 num_entries = apuinfo_list_length ();
2758 bfd_put_32 (abfd, sizeof APUINFO_LABEL, buffer);
2759 bfd_put_32 (abfd, num_entries * 4, buffer + 4);
2760 bfd_put_32 (abfd, 0x2, buffer + 8);
2761 strcpy ((char *) buffer + 12, APUINFO_LABEL);
2762
2763 length = 20;
2764 for (i = 0; i < num_entries; i++)
2765 {
2766 bfd_put_32 (abfd, apuinfo_list_element (i), buffer + length);
2767 length += 4;
2768 }
2769
2770 if (length != asec->size)
2771 (*_bfd_error_handler) (_("failed to compute new APUinfo section."));
2772
2773 if (! bfd_set_section_contents (abfd, asec, buffer, (file_ptr) 0, length))
2774 (*_bfd_error_handler) (_("failed to install new APUinfo section."));
2775
2776 free (buffer);
2777
2778 apuinfo_list_finish ();
2779 }
2780 \f
2781 static bfd_boolean
2782 is_nonpic_glink_stub (bfd *abfd, asection *glink, bfd_vma off)
2783 {
2784 bfd_byte buf[GLINK_ENTRY_SIZE];
2785
2786 if (!bfd_get_section_contents (abfd, glink, buf, off, GLINK_ENTRY_SIZE))
2787 return FALSE;
2788
2789 return ((bfd_get_32 (abfd, buf + 0) & 0xffff0000) == LIS_11
2790 && (bfd_get_32 (abfd, buf + 4) & 0xffff0000) == LWZ_11_11
2791 && bfd_get_32 (abfd, buf + 8) == MTCTR_11
2792 && bfd_get_32 (abfd, buf + 12) == BCTR);
2793 }
2794
2795 static bfd_boolean
2796 section_covers_vma (bfd *abfd ATTRIBUTE_UNUSED, asection *section, void *ptr)
2797 {
2798 bfd_vma vma = *(bfd_vma *) ptr;
2799 return ((section->flags & SEC_ALLOC) != 0
2800 && section->vma <= vma
2801 && vma < section->vma + section->size);
2802 }
2803
2804 static long
2805 ppc_elf_get_synthetic_symtab (bfd *abfd, long symcount, asymbol **syms,
2806 long dynsymcount, asymbol **dynsyms,
2807 asymbol **ret)
2808 {
2809 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
2810 asection *plt, *relplt, *dynamic, *glink;
2811 bfd_vma glink_vma = 0;
2812 bfd_vma resolv_vma = 0;
2813 bfd_vma stub_vma;
2814 asymbol *s;
2815 arelent *p;
2816 long count, i;
2817 size_t size;
2818 char *names;
2819 bfd_byte buf[4];
2820
2821 *ret = NULL;
2822
2823 if ((abfd->flags & (DYNAMIC | EXEC_P)) == 0)
2824 return 0;
2825
2826 if (dynsymcount <= 0)
2827 return 0;
2828
2829 relplt = bfd_get_section_by_name (abfd, ".rela.plt");
2830 if (relplt == NULL)
2831 return 0;
2832
2833 plt = bfd_get_section_by_name (abfd, ".plt");
2834 if (plt == NULL)
2835 return 0;
2836
2837 /* Call common code to handle old-style executable PLTs. */
2838 if (elf_section_flags (plt) & SHF_EXECINSTR)
2839 return _bfd_elf_get_synthetic_symtab (abfd, symcount, syms,
2840 dynsymcount, dynsyms, ret);
2841
2842 /* If this object was prelinked, the prelinker stored the address
2843 of .glink at got[1]. If it wasn't prelinked, got[1] will be zero. */
2844 dynamic = bfd_get_section_by_name (abfd, ".dynamic");
2845 if (dynamic != NULL)
2846 {
2847 bfd_byte *dynbuf, *extdyn, *extdynend;
2848 size_t extdynsize;
2849 void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *);
2850
2851 if (!bfd_malloc_and_get_section (abfd, dynamic, &dynbuf))
2852 return -1;
2853
2854 extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn;
2855 swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in;
2856
2857 extdyn = dynbuf;
2858 extdynend = extdyn + dynamic->size;
2859 for (; extdyn < extdynend; extdyn += extdynsize)
2860 {
2861 Elf_Internal_Dyn dyn;
2862 (*swap_dyn_in) (abfd, extdyn, &dyn);
2863
2864 if (dyn.d_tag == DT_NULL)
2865 break;
2866
2867 if (dyn.d_tag == DT_PPC_GOT)
2868 {
2869 unsigned int g_o_t = dyn.d_un.d_val;
2870 asection *got = bfd_get_section_by_name (abfd, ".got");
2871 if (got != NULL
2872 && bfd_get_section_contents (abfd, got, buf,
2873 g_o_t - got->vma + 4, 4))
2874 glink_vma = bfd_get_32 (abfd, buf);
2875 break;
2876 }
2877 }
2878 free (dynbuf);
2879 }
2880
2881 /* Otherwise we read the first plt entry. */
2882 if (glink_vma == 0)
2883 {
2884 if (bfd_get_section_contents (abfd, plt, buf, 0, 4))
2885 glink_vma = bfd_get_32 (abfd, buf);
2886 }
2887
2888 if (glink_vma == 0)
2889 return 0;
2890
2891 /* The .glink section usually does not survive the final
2892 link; search for the section (usually .text) where the
2893 glink stubs now reside. */
2894 glink = bfd_sections_find_if (abfd, section_covers_vma, &glink_vma);
2895 if (glink == NULL)
2896 return 0;
2897
2898 /* Determine glink PLT resolver by reading the relative branch
2899 from the first glink stub. */
2900 if (bfd_get_section_contents (abfd, glink, buf,
2901 glink_vma - glink->vma, 4))
2902 {
2903 unsigned int insn = bfd_get_32 (abfd, buf);
2904
2905 /* The first glink stub may either branch to the resolver ... */
2906 insn ^= B;
2907 if ((insn & ~0x3fffffc) == 0)
2908 resolv_vma = glink_vma + (insn ^ 0x2000000) - 0x2000000;
2909
2910 /* ... or fall through a bunch of NOPs. */
2911 else if ((insn ^ B ^ NOP) == 0)
2912 for (i = 4;
2913 bfd_get_section_contents (abfd, glink, buf,
2914 glink_vma - glink->vma + i, 4);
2915 i += 4)
2916 if (bfd_get_32 (abfd, buf) != NOP)
2917 {
2918 resolv_vma = glink_vma + i;
2919 break;
2920 }
2921 }
2922
2923 count = relplt->size / sizeof (Elf32_External_Rela);
2924 stub_vma = glink_vma - (bfd_vma) count * 16;
2925 /* If the stubs are those for -shared/-pie then we might have
2926 multiple stubs for each plt entry. If that is the case then
2927 there is no way to associate stubs with their plt entries short
2928 of figuring out the GOT pointer value used in the stub. */
2929 if (!is_nonpic_glink_stub (abfd, glink,
2930 glink_vma - GLINK_ENTRY_SIZE - glink->vma))
2931 return 0;
2932
2933 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
2934 if (! (*slurp_relocs) (abfd, relplt, dynsyms, TRUE))
2935 return -1;
2936
2937 size = count * sizeof (asymbol);
2938 p = relplt->relocation;
2939 for (i = 0; i < count; i++, p++)
2940 {
2941 size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt");
2942 if (p->addend != 0)
2943 size += sizeof ("+0x") - 1 + 8;
2944 }
2945
2946 size += sizeof (asymbol) + sizeof ("__glink");
2947
2948 if (resolv_vma)
2949 size += sizeof (asymbol) + sizeof ("__glink_PLTresolve");
2950
2951 s = *ret = bfd_malloc (size);
2952 if (s == NULL)
2953 return -1;
2954
2955 names = (char *) (s + count + 1 + (resolv_vma != 0));
2956 p = relplt->relocation;
2957 for (i = 0; i < count; i++, p++)
2958 {
2959 size_t len;
2960
2961 *s = **p->sym_ptr_ptr;
2962 /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since
2963 we are defining a symbol, ensure one of them is set. */
2964 if ((s->flags & BSF_LOCAL) == 0)
2965 s->flags |= BSF_GLOBAL;
2966 s->flags |= BSF_SYNTHETIC;
2967 s->section = glink;
2968 s->value = stub_vma - glink->vma;
2969 s->name = names;
2970 s->udata.p = NULL;
2971 len = strlen ((*p->sym_ptr_ptr)->name);
2972 memcpy (names, (*p->sym_ptr_ptr)->name, len);
2973 names += len;
2974 if (p->addend != 0)
2975 {
2976 memcpy (names, "+0x", sizeof ("+0x") - 1);
2977 names += sizeof ("+0x") - 1;
2978 bfd_sprintf_vma (abfd, names, p->addend);
2979 names += strlen (names);
2980 }
2981 memcpy (names, "@plt", sizeof ("@plt"));
2982 names += sizeof ("@plt");
2983 ++s;
2984 stub_vma += 16;
2985 }
2986
2987 /* Add a symbol at the start of the glink branch table. */
2988 memset (s, 0, sizeof *s);
2989 s->the_bfd = abfd;
2990 s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
2991 s->section = glink;
2992 s->value = glink_vma - glink->vma;
2993 s->name = names;
2994 memcpy (names, "__glink", sizeof ("__glink"));
2995 names += sizeof ("__glink");
2996 s++;
2997 count++;
2998
2999 if (resolv_vma)
3000 {
3001 /* Add a symbol for the glink PLT resolver. */
3002 memset (s, 0, sizeof *s);
3003 s->the_bfd = abfd;
3004 s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
3005 s->section = glink;
3006 s->value = resolv_vma - glink->vma;
3007 s->name = names;
3008 memcpy (names, "__glink_PLTresolve", sizeof ("__glink_PLTresolve"));
3009 names += sizeof ("__glink_PLTresolve");
3010 s++;
3011 count++;
3012 }
3013
3014 return count;
3015 }
3016 \f
3017 /* The following functions are specific to the ELF linker, while
3018 functions above are used generally. They appear in this file more
3019 or less in the order in which they are called. eg.
3020 ppc_elf_check_relocs is called early in the link process,
3021 ppc_elf_finish_dynamic_sections is one of the last functions
3022 called. */
3023
3024 /* Track PLT entries needed for a given symbol. We might need more
3025 than one glink entry per symbol when generating a pic binary. */
3026 struct plt_entry
3027 {
3028 struct plt_entry *next;
3029
3030 /* -fPIC uses multiple GOT sections, one per file, called ".got2".
3031 This field stores the offset into .got2 used to initialise the
3032 GOT pointer reg. It will always be at least 32768. (Current
3033 gcc always uses an offset of 32768, but ld -r will pack .got2
3034 sections together resulting in larger offsets). */
3035 bfd_vma addend;
3036
3037 /* The .got2 section. */
3038 asection *sec;
3039
3040 /* PLT refcount or offset. */
3041 union
3042 {
3043 bfd_signed_vma refcount;
3044 bfd_vma offset;
3045 } plt;
3046
3047 /* .glink stub offset. */
3048 bfd_vma glink_offset;
3049 };
3050
3051 /* Of those relocs that might be copied as dynamic relocs, this function
3052 selects those that must be copied when linking a shared library,
3053 even when the symbol is local. */
3054
3055 static int
3056 must_be_dyn_reloc (struct bfd_link_info *info,
3057 enum elf_ppc_reloc_type r_type)
3058 {
3059 switch (r_type)
3060 {
3061 default:
3062 return 1;
3063
3064 case R_PPC_REL24:
3065 case R_PPC_REL14:
3066 case R_PPC_REL14_BRTAKEN:
3067 case R_PPC_REL14_BRNTAKEN:
3068 case R_PPC_REL32:
3069 return 0;
3070
3071 case R_PPC_TPREL32:
3072 case R_PPC_TPREL16:
3073 case R_PPC_TPREL16_LO:
3074 case R_PPC_TPREL16_HI:
3075 case R_PPC_TPREL16_HA:
3076 return !info->executable;
3077 }
3078 }
3079
3080 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
3081 copying dynamic variables from a shared lib into an app's dynbss
3082 section, and instead use a dynamic relocation to point into the
3083 shared lib. */
3084 #define ELIMINATE_COPY_RELOCS 1
3085
3086 /* Used to track dynamic relocations for local symbols. */
3087 struct ppc_dyn_relocs
3088 {
3089 struct ppc_dyn_relocs *next;
3090
3091 /* The input section of the reloc. */
3092 asection *sec;
3093
3094 /* Total number of relocs copied for the input section. */
3095 unsigned int count : 31;
3096
3097 /* Whether this entry is for STT_GNU_IFUNC symbols. */
3098 unsigned int ifunc : 1;
3099 };
3100
3101 /* PPC ELF linker hash entry. */
3102
3103 struct ppc_elf_link_hash_entry
3104 {
3105 struct elf_link_hash_entry elf;
3106
3107 /* If this symbol is used in the linker created sections, the processor
3108 specific backend uses this field to map the field into the offset
3109 from the beginning of the section. */
3110 elf_linker_section_pointers_t *linker_section_pointer;
3111
3112 /* Track dynamic relocs copied for this symbol. */
3113 struct elf_dyn_relocs *dyn_relocs;
3114
3115 /* Contexts in which symbol is used in the GOT (or TOC).
3116 TLS_GD .. TLS_TLS bits are or'd into the mask as the
3117 corresponding relocs are encountered during check_relocs.
3118 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
3119 indicate the corresponding GOT entry type is not needed. */
3120 #define TLS_GD 1 /* GD reloc. */
3121 #define TLS_LD 2 /* LD reloc. */
3122 #define TLS_TPREL 4 /* TPREL reloc, => IE. */
3123 #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
3124 #define TLS_TLS 16 /* Any TLS reloc. */
3125 #define TLS_TPRELGD 32 /* TPREL reloc resulting from GD->IE. */
3126 #define PLT_IFUNC 64 /* STT_GNU_IFUNC. */
3127 char tls_mask;
3128
3129 /* Nonzero if we have seen a small data relocation referring to this
3130 symbol. */
3131 unsigned char has_sda_refs;
3132 };
3133
3134 #define ppc_elf_hash_entry(ent) ((struct ppc_elf_link_hash_entry *) (ent))
3135
3136 /* PPC ELF linker hash table. */
3137
3138 struct ppc_elf_link_hash_table
3139 {
3140 struct elf_link_hash_table elf;
3141
3142 /* Short-cuts to get to dynamic linker sections. */
3143 asection *got;
3144 asection *relgot;
3145 asection *glink;
3146 asection *plt;
3147 asection *relplt;
3148 asection *iplt;
3149 asection *reliplt;
3150 asection *dynbss;
3151 asection *relbss;
3152 asection *dynsbss;
3153 asection *relsbss;
3154 elf_linker_section_t sdata[2];
3155 asection *sbss;
3156 asection *glink_eh_frame;
3157
3158 /* The (unloaded but important) .rela.plt.unloaded on VxWorks. */
3159 asection *srelplt2;
3160
3161 /* The .got.plt section (VxWorks only)*/
3162 asection *sgotplt;
3163
3164 /* Shortcut to __tls_get_addr. */
3165 struct elf_link_hash_entry *tls_get_addr;
3166
3167 /* The bfd that forced an old-style PLT. */
3168 bfd *old_bfd;
3169
3170 /* TLS local dynamic got entry handling. */
3171 union {
3172 bfd_signed_vma refcount;
3173 bfd_vma offset;
3174 } tlsld_got;
3175
3176 /* Offset of branch table to PltResolve function in glink. */
3177 bfd_vma glink_pltresolve;
3178
3179 /* Size of reserved GOT entries. */
3180 unsigned int got_header_size;
3181 /* Non-zero if allocating the header left a gap. */
3182 unsigned int got_gap;
3183
3184 /* The type of PLT we have chosen to use. */
3185 enum ppc_elf_plt_type plt_type;
3186
3187 /* Set if we should emit symbols for stubs. */
3188 unsigned int emit_stub_syms:1;
3189
3190 /* Set if __tls_get_addr optimization should not be done. */
3191 unsigned int no_tls_get_addr_opt:1;
3192
3193 /* True if the target system is VxWorks. */
3194 unsigned int is_vxworks:1;
3195
3196 /* The size of PLT entries. */
3197 int plt_entry_size;
3198 /* The distance between adjacent PLT slots. */
3199 int plt_slot_size;
3200 /* The size of the first PLT entry. */
3201 int plt_initial_entry_size;
3202
3203 /* Small local sym cache. */
3204 struct sym_cache sym_cache;
3205 };
3206
3207 /* Rename some of the generic section flags to better document how they
3208 are used for ppc32. The flags are only valid for ppc32 elf objects. */
3209
3210 /* Nonzero if this section has TLS related relocations. */
3211 #define has_tls_reloc sec_flg0
3212
3213 /* Nonzero if this section has a call to __tls_get_addr. */
3214 #define has_tls_get_addr_call sec_flg1
3215
3216 /* Get the PPC ELF linker hash table from a link_info structure. */
3217
3218 #define ppc_elf_hash_table(p) \
3219 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
3220 == PPC32_ELF_DATA ? ((struct ppc_elf_link_hash_table *) ((p)->hash)) : NULL)
3221
3222 /* Create an entry in a PPC ELF linker hash table. */
3223
3224 static struct bfd_hash_entry *
3225 ppc_elf_link_hash_newfunc (struct bfd_hash_entry *entry,
3226 struct bfd_hash_table *table,
3227 const char *string)
3228 {
3229 /* Allocate the structure if it has not already been allocated by a
3230 subclass. */
3231 if (entry == NULL)
3232 {
3233 entry = bfd_hash_allocate (table,
3234 sizeof (struct ppc_elf_link_hash_entry));
3235 if (entry == NULL)
3236 return entry;
3237 }
3238
3239 /* Call the allocation method of the superclass. */
3240 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
3241 if (entry != NULL)
3242 {
3243 ppc_elf_hash_entry (entry)->linker_section_pointer = NULL;
3244 ppc_elf_hash_entry (entry)->dyn_relocs = NULL;
3245 ppc_elf_hash_entry (entry)->tls_mask = 0;
3246 ppc_elf_hash_entry (entry)->has_sda_refs = 0;
3247 }
3248
3249 return entry;
3250 }
3251
3252 /* Create a PPC ELF linker hash table. */
3253
3254 static struct bfd_link_hash_table *
3255 ppc_elf_link_hash_table_create (bfd *abfd)
3256 {
3257 struct ppc_elf_link_hash_table *ret;
3258
3259 ret = bfd_zmalloc (sizeof (struct ppc_elf_link_hash_table));
3260 if (ret == NULL)
3261 return NULL;
3262
3263 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd,
3264 ppc_elf_link_hash_newfunc,
3265 sizeof (struct ppc_elf_link_hash_entry),
3266 PPC32_ELF_DATA))
3267 {
3268 free (ret);
3269 return NULL;
3270 }
3271
3272 ret->elf.init_plt_refcount.refcount = 0;
3273 ret->elf.init_plt_refcount.glist = NULL;
3274 ret->elf.init_plt_offset.offset = 0;
3275 ret->elf.init_plt_offset.glist = NULL;
3276
3277 ret->sdata[0].name = ".sdata";
3278 ret->sdata[0].sym_name = "_SDA_BASE_";
3279 ret->sdata[0].bss_name = ".sbss";
3280
3281 ret->sdata[1].name = ".sdata2";
3282 ret->sdata[1].sym_name = "_SDA2_BASE_";
3283 ret->sdata[1].bss_name = ".sbss2";
3284
3285 ret->plt_entry_size = 12;
3286 ret->plt_slot_size = 8;
3287 ret->plt_initial_entry_size = 72;
3288
3289 return &ret->elf.root;
3290 }
3291
3292 /* Create .got and the related sections. */
3293
3294 static bfd_boolean
3295 ppc_elf_create_got (bfd *abfd, struct bfd_link_info *info)
3296 {
3297 struct ppc_elf_link_hash_table *htab;
3298 asection *s;
3299 flagword flags;
3300
3301 if (!_bfd_elf_create_got_section (abfd, info))
3302 return FALSE;
3303
3304 htab = ppc_elf_hash_table (info);
3305 htab->got = s = bfd_get_linker_section (abfd, ".got");
3306 if (s == NULL)
3307 abort ();
3308
3309 if (htab->is_vxworks)
3310 {
3311 htab->sgotplt = bfd_get_linker_section (abfd, ".got.plt");
3312 if (!htab->sgotplt)
3313 abort ();
3314 }
3315 else
3316 {
3317 /* The powerpc .got has a blrl instruction in it. Mark it
3318 executable. */
3319 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS
3320 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3321 if (!bfd_set_section_flags (abfd, s, flags))
3322 return FALSE;
3323 }
3324
3325 htab->relgot = bfd_get_linker_section (abfd, ".rela.got");
3326 if (!htab->relgot)
3327 abort ();
3328
3329 return TRUE;
3330 }
3331
3332 static bfd_boolean
3333 ppc_elf_create_glink (bfd *abfd, struct bfd_link_info *info)
3334 {
3335 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
3336 asection *s;
3337 flagword flags;
3338
3339 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY | SEC_HAS_CONTENTS
3340 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3341 s = bfd_make_section_anyway_with_flags (abfd, ".glink", flags);
3342 htab->glink = s;
3343 if (s == NULL
3344 || !bfd_set_section_alignment (abfd, s, 4))
3345 return FALSE;
3346
3347 if (!info->no_ld_generated_unwind_info)
3348 {
3349 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
3350 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3351 s = bfd_make_section_anyway_with_flags (abfd, ".eh_frame", flags);
3352 htab->glink_eh_frame = s;
3353 if (s == NULL
3354 || !bfd_set_section_alignment (abfd, s, 2))
3355 return FALSE;
3356 }
3357
3358 flags = SEC_ALLOC | SEC_LINKER_CREATED;
3359 s = bfd_make_section_anyway_with_flags (abfd, ".iplt", flags);
3360 htab->iplt = s;
3361 if (s == NULL
3362 || !bfd_set_section_alignment (abfd, s, 4))
3363 return FALSE;
3364
3365 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
3366 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3367 s = bfd_make_section_anyway_with_flags (abfd, ".rela.iplt", flags);
3368 htab->reliplt = s;
3369 if (s == NULL
3370 || ! bfd_set_section_alignment (abfd, s, 2))
3371 return FALSE;
3372 return TRUE;
3373 }
3374
3375 /* We have to create .dynsbss and .rela.sbss here so that they get mapped
3376 to output sections (just like _bfd_elf_create_dynamic_sections has
3377 to create .dynbss and .rela.bss). */
3378
3379 static bfd_boolean
3380 ppc_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
3381 {
3382 struct ppc_elf_link_hash_table *htab;
3383 asection *s;
3384 flagword flags;
3385
3386 htab = ppc_elf_hash_table (info);
3387
3388 if (htab->got == NULL
3389 && !ppc_elf_create_got (abfd, info))
3390 return FALSE;
3391
3392 if (!_bfd_elf_create_dynamic_sections (abfd, info))
3393 return FALSE;
3394
3395 if (htab->glink == NULL
3396 && !ppc_elf_create_glink (abfd, info))
3397 return FALSE;
3398
3399 htab->dynbss = bfd_get_linker_section (abfd, ".dynbss");
3400 s = bfd_make_section_anyway_with_flags (abfd, ".dynsbss",
3401 SEC_ALLOC | SEC_LINKER_CREATED);
3402 htab->dynsbss = s;
3403 if (s == NULL)
3404 return FALSE;
3405
3406 if (! info->shared)
3407 {
3408 htab->relbss = bfd_get_linker_section (abfd, ".rela.bss");
3409 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
3410 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3411 s = bfd_make_section_anyway_with_flags (abfd, ".rela.sbss", flags);
3412 htab->relsbss = s;
3413 if (s == NULL
3414 || ! bfd_set_section_alignment (abfd, s, 2))
3415 return FALSE;
3416 }
3417
3418 if (htab->is_vxworks
3419 && !elf_vxworks_create_dynamic_sections (abfd, info, &htab->srelplt2))
3420 return FALSE;
3421
3422 htab->relplt = bfd_get_linker_section (abfd, ".rela.plt");
3423 htab->plt = s = bfd_get_linker_section (abfd, ".plt");
3424 if (s == NULL)
3425 abort ();
3426
3427 flags = SEC_ALLOC | SEC_CODE | SEC_LINKER_CREATED;
3428 if (htab->plt_type == PLT_VXWORKS)
3429 /* The VxWorks PLT is a loaded section with contents. */
3430 flags |= SEC_HAS_CONTENTS | SEC_LOAD | SEC_READONLY;
3431 return bfd_set_section_flags (abfd, s, flags);
3432 }
3433
3434 /* Copy the extra info we tack onto an elf_link_hash_entry. */
3435
3436 static void
3437 ppc_elf_copy_indirect_symbol (struct bfd_link_info *info,
3438 struct elf_link_hash_entry *dir,
3439 struct elf_link_hash_entry *ind)
3440 {
3441 struct ppc_elf_link_hash_entry *edir, *eind;
3442
3443 edir = (struct ppc_elf_link_hash_entry *) dir;
3444 eind = (struct ppc_elf_link_hash_entry *) ind;
3445
3446 edir->tls_mask |= eind->tls_mask;
3447 edir->has_sda_refs |= eind->has_sda_refs;
3448
3449 /* If called to transfer flags for a weakdef during processing
3450 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
3451 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
3452 if (!(ELIMINATE_COPY_RELOCS
3453 && eind->elf.root.type != bfd_link_hash_indirect
3454 && edir->elf.dynamic_adjusted))
3455 edir->elf.non_got_ref |= eind->elf.non_got_ref;
3456
3457 edir->elf.ref_dynamic |= eind->elf.ref_dynamic;
3458 edir->elf.ref_regular |= eind->elf.ref_regular;
3459 edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak;
3460 edir->elf.needs_plt |= eind->elf.needs_plt;
3461 edir->elf.pointer_equality_needed |= eind->elf.pointer_equality_needed;
3462
3463 if (eind->dyn_relocs != NULL)
3464 {
3465 if (edir->dyn_relocs != NULL)
3466 {
3467 struct elf_dyn_relocs **pp;
3468 struct elf_dyn_relocs *p;
3469
3470 /* Add reloc counts against the indirect sym to the direct sym
3471 list. Merge any entries against the same section. */
3472 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
3473 {
3474 struct elf_dyn_relocs *q;
3475
3476 for (q = edir->dyn_relocs; q != NULL; q = q->next)
3477 if (q->sec == p->sec)
3478 {
3479 q->pc_count += p->pc_count;
3480 q->count += p->count;
3481 *pp = p->next;
3482 break;
3483 }
3484 if (q == NULL)
3485 pp = &p->next;
3486 }
3487 *pp = edir->dyn_relocs;
3488 }
3489
3490 edir->dyn_relocs = eind->dyn_relocs;
3491 eind->dyn_relocs = NULL;
3492 }
3493
3494 /* If we were called to copy over info for a weak sym, that's all.
3495 You might think dyn_relocs need not be copied over; After all,
3496 both syms will be dynamic or both non-dynamic so we're just
3497 moving reloc accounting around. However, ELIMINATE_COPY_RELOCS
3498 code in ppc_elf_adjust_dynamic_symbol needs to check for
3499 dyn_relocs in read-only sections, and it does so on what is the
3500 DIR sym here. */
3501 if (eind->elf.root.type != bfd_link_hash_indirect)
3502 return;
3503
3504 /* Copy over the GOT refcount entries that we may have already seen to
3505 the symbol which just became indirect. */
3506 edir->elf.got.refcount += eind->elf.got.refcount;
3507 eind->elf.got.refcount = 0;
3508
3509 /* And plt entries. */
3510 if (eind->elf.plt.plist != NULL)
3511 {
3512 if (edir->elf.plt.plist != NULL)
3513 {
3514 struct plt_entry **entp;
3515 struct plt_entry *ent;
3516
3517 for (entp = &eind->elf.plt.plist; (ent = *entp) != NULL; )
3518 {
3519 struct plt_entry *dent;
3520
3521 for (dent = edir->elf.plt.plist; dent != NULL; dent = dent->next)
3522 if (dent->sec == ent->sec && dent->addend == ent->addend)
3523 {
3524 dent->plt.refcount += ent->plt.refcount;
3525 *entp = ent->next;
3526 break;
3527 }
3528 if (dent == NULL)
3529 entp = &ent->next;
3530 }
3531 *entp = edir->elf.plt.plist;
3532 }
3533
3534 edir->elf.plt.plist = eind->elf.plt.plist;
3535 eind->elf.plt.plist = NULL;
3536 }
3537
3538 if (eind->elf.dynindx != -1)
3539 {
3540 if (edir->elf.dynindx != -1)
3541 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
3542 edir->elf.dynstr_index);
3543 edir->elf.dynindx = eind->elf.dynindx;
3544 edir->elf.dynstr_index = eind->elf.dynstr_index;
3545 eind->elf.dynindx = -1;
3546 eind->elf.dynstr_index = 0;
3547 }
3548 }
3549
3550 /* Hook called by the linker routine which adds symbols from an object
3551 file. We use it to put .comm items in .sbss, and not .bss. */
3552
3553 static bfd_boolean
3554 ppc_elf_add_symbol_hook (bfd *abfd,
3555 struct bfd_link_info *info,
3556 Elf_Internal_Sym *sym,
3557 const char **namep ATTRIBUTE_UNUSED,
3558 flagword *flagsp ATTRIBUTE_UNUSED,
3559 asection **secp,
3560 bfd_vma *valp)
3561 {
3562 if (sym->st_shndx == SHN_COMMON
3563 && !info->relocatable
3564 && is_ppc_elf (info->output_bfd)
3565 && sym->st_size <= elf_gp_size (abfd))
3566 {
3567 /* Common symbols less than or equal to -G nn bytes are automatically
3568 put into .sbss. */
3569 struct ppc_elf_link_hash_table *htab;
3570
3571 htab = ppc_elf_hash_table (info);
3572 if (htab->sbss == NULL)
3573 {
3574 flagword flags = SEC_IS_COMMON | SEC_LINKER_CREATED;
3575
3576 if (!htab->elf.dynobj)
3577 htab->elf.dynobj = abfd;
3578
3579 htab->sbss = bfd_make_section_anyway_with_flags (htab->elf.dynobj,
3580 ".sbss",
3581 flags);
3582 if (htab->sbss == NULL)
3583 return FALSE;
3584 }
3585
3586 *secp = htab->sbss;
3587 *valp = sym->st_size;
3588 }
3589
3590 if ((abfd->flags & DYNAMIC) == 0
3591 && (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC
3592 || ELF_ST_BIND (sym->st_info) == STB_GNU_UNIQUE))
3593 elf_tdata (info->output_bfd)->has_gnu_symbols = TRUE;
3594
3595 return TRUE;
3596 }
3597 \f
3598 static bfd_boolean
3599 create_sdata_sym (struct bfd_link_info *info, elf_linker_section_t *lsect)
3600 {
3601 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
3602
3603 lsect->sym = elf_link_hash_lookup (&htab->elf, lsect->sym_name,
3604 TRUE, FALSE, TRUE);
3605 if (lsect->sym == NULL)
3606 return FALSE;
3607 if (lsect->sym->root.type == bfd_link_hash_new)
3608 lsect->sym->non_elf = 0;
3609 lsect->sym->ref_regular = 1;
3610 _bfd_elf_link_hash_hide_symbol (info, lsect->sym, TRUE);
3611 return TRUE;
3612 }
3613
3614 /* Create a special linker section. */
3615
3616 static bfd_boolean
3617 ppc_elf_create_linker_section (bfd *abfd,
3618 struct bfd_link_info *info,
3619 flagword flags,
3620 elf_linker_section_t *lsect)
3621 {
3622 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
3623 asection *s;
3624
3625 flags |= (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
3626 | SEC_LINKER_CREATED);
3627
3628 /* Record the first bfd that needs the special sections. */
3629 if (!htab->elf.dynobj)
3630 htab->elf.dynobj = abfd;
3631
3632 s = bfd_make_section_anyway_with_flags (htab->elf.dynobj,
3633 lsect->name,
3634 flags);
3635 if (s == NULL
3636 || !bfd_set_section_alignment (htab->elf.dynobj, s, 2))
3637 return FALSE;
3638 lsect->section = s;
3639
3640 return create_sdata_sym (info, lsect);
3641 }
3642
3643 /* Find a linker generated pointer with a given addend and type. */
3644
3645 static elf_linker_section_pointers_t *
3646 elf_find_pointer_linker_section
3647 (elf_linker_section_pointers_t *linker_pointers,
3648 bfd_vma addend,
3649 elf_linker_section_t *lsect)
3650 {
3651 for ( ; linker_pointers != NULL; linker_pointers = linker_pointers->next)
3652 if (lsect == linker_pointers->lsect && addend == linker_pointers->addend)
3653 return linker_pointers;
3654
3655 return NULL;
3656 }
3657
3658 /* Allocate a pointer to live in a linker created section. */
3659
3660 static bfd_boolean
3661 elf_create_pointer_linker_section (bfd *abfd,
3662 elf_linker_section_t *lsect,
3663 struct elf_link_hash_entry *h,
3664 const Elf_Internal_Rela *rel)
3665 {
3666 elf_linker_section_pointers_t **ptr_linker_section_ptr = NULL;
3667 elf_linker_section_pointers_t *linker_section_ptr;
3668 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
3669 bfd_size_type amt;
3670
3671 BFD_ASSERT (lsect != NULL);
3672
3673 /* Is this a global symbol? */
3674 if (h != NULL)
3675 {
3676 struct ppc_elf_link_hash_entry *eh;
3677
3678 /* Has this symbol already been allocated? If so, our work is done. */
3679 eh = (struct ppc_elf_link_hash_entry *) h;
3680 if (elf_find_pointer_linker_section (eh->linker_section_pointer,
3681 rel->r_addend,
3682 lsect))
3683 return TRUE;
3684
3685 ptr_linker_section_ptr = &eh->linker_section_pointer;
3686 }
3687 else
3688 {
3689 BFD_ASSERT (is_ppc_elf (abfd));
3690
3691 /* Allocation of a pointer to a local symbol. */
3692 elf_linker_section_pointers_t **ptr = elf_local_ptr_offsets (abfd);
3693
3694 /* Allocate a table to hold the local symbols if first time. */
3695 if (!ptr)
3696 {
3697 unsigned int num_symbols = elf_symtab_hdr (abfd).sh_info;
3698
3699 amt = num_symbols;
3700 amt *= sizeof (elf_linker_section_pointers_t *);
3701 ptr = bfd_zalloc (abfd, amt);
3702
3703 if (!ptr)
3704 return FALSE;
3705
3706 elf_local_ptr_offsets (abfd) = ptr;
3707 }
3708
3709 /* Has this symbol already been allocated? If so, our work is done. */
3710 if (elf_find_pointer_linker_section (ptr[r_symndx],
3711 rel->r_addend,
3712 lsect))
3713 return TRUE;
3714
3715 ptr_linker_section_ptr = &ptr[r_symndx];
3716 }
3717
3718 /* Allocate space for a pointer in the linker section, and allocate
3719 a new pointer record from internal memory. */
3720 BFD_ASSERT (ptr_linker_section_ptr != NULL);
3721 amt = sizeof (elf_linker_section_pointers_t);
3722 linker_section_ptr = bfd_alloc (abfd, amt);
3723
3724 if (!linker_section_ptr)
3725 return FALSE;
3726
3727 linker_section_ptr->next = *ptr_linker_section_ptr;
3728 linker_section_ptr->addend = rel->r_addend;
3729 linker_section_ptr->lsect = lsect;
3730 *ptr_linker_section_ptr = linker_section_ptr;
3731
3732 linker_section_ptr->offset = lsect->section->size;
3733 lsect->section->size += 4;
3734
3735 #ifdef DEBUG
3736 fprintf (stderr,
3737 "Create pointer in linker section %s, offset = %ld, section size = %ld\n",
3738 lsect->name, (long) linker_section_ptr->offset,
3739 (long) lsect->section->size);
3740 #endif
3741
3742 return TRUE;
3743 }
3744
3745 static struct plt_entry **
3746 update_local_sym_info (bfd *abfd,
3747 Elf_Internal_Shdr *symtab_hdr,
3748 unsigned long r_symndx,
3749 int tls_type)
3750 {
3751 bfd_signed_vma *local_got_refcounts = elf_local_got_refcounts (abfd);
3752 struct plt_entry **local_plt;
3753 char *local_got_tls_masks;
3754
3755 if (local_got_refcounts == NULL)
3756 {
3757 bfd_size_type size = symtab_hdr->sh_info;
3758
3759 size *= (sizeof (*local_got_refcounts)
3760 + sizeof (*local_plt)
3761 + sizeof (*local_got_tls_masks));
3762 local_got_refcounts = bfd_zalloc (abfd, size);
3763 if (local_got_refcounts == NULL)
3764 return NULL;
3765 elf_local_got_refcounts (abfd) = local_got_refcounts;
3766 }
3767
3768 local_plt = (struct plt_entry **) (local_got_refcounts + symtab_hdr->sh_info);
3769 local_got_tls_masks = (char *) (local_plt + symtab_hdr->sh_info);
3770 local_got_tls_masks[r_symndx] |= tls_type;
3771 if (tls_type != PLT_IFUNC)
3772 local_got_refcounts[r_symndx] += 1;
3773 return local_plt + r_symndx;
3774 }
3775
3776 static bfd_boolean
3777 update_plt_info (bfd *abfd, struct plt_entry **plist,
3778 asection *sec, bfd_vma addend)
3779 {
3780 struct plt_entry *ent;
3781
3782 if (addend < 32768)
3783 sec = NULL;
3784 for (ent = *plist; ent != NULL; ent = ent->next)
3785 if (ent->sec == sec && ent->addend == addend)
3786 break;
3787 if (ent == NULL)
3788 {
3789 bfd_size_type amt = sizeof (*ent);
3790 ent = bfd_alloc (abfd, amt);
3791 if (ent == NULL)
3792 return FALSE;
3793 ent->next = *plist;
3794 ent->sec = sec;
3795 ent->addend = addend;
3796 ent->plt.refcount = 0;
3797 *plist = ent;
3798 }
3799 ent->plt.refcount += 1;
3800 return TRUE;
3801 }
3802
3803 static struct plt_entry *
3804 find_plt_ent (struct plt_entry **plist, asection *sec, bfd_vma addend)
3805 {
3806 struct plt_entry *ent;
3807
3808 if (addend < 32768)
3809 sec = NULL;
3810 for (ent = *plist; ent != NULL; ent = ent->next)
3811 if (ent->sec == sec && ent->addend == addend)
3812 break;
3813 return ent;
3814 }
3815
3816 static bfd_boolean
3817 is_branch_reloc (enum elf_ppc_reloc_type r_type)
3818 {
3819 return (r_type == R_PPC_PLTREL24
3820 || r_type == R_PPC_LOCAL24PC
3821 || r_type == R_PPC_REL24
3822 || r_type == R_PPC_REL14
3823 || r_type == R_PPC_REL14_BRTAKEN
3824 || r_type == R_PPC_REL14_BRNTAKEN
3825 || r_type == R_PPC_ADDR24
3826 || r_type == R_PPC_ADDR14
3827 || r_type == R_PPC_ADDR14_BRTAKEN
3828 || r_type == R_PPC_ADDR14_BRNTAKEN);
3829 }
3830
3831 static void
3832 bad_shared_reloc (bfd *abfd, enum elf_ppc_reloc_type r_type)
3833 {
3834 (*_bfd_error_handler)
3835 (_("%B: relocation %s cannot be used when making a shared object"),
3836 abfd,
3837 ppc_elf_howto_table[r_type]->name);
3838 bfd_set_error (bfd_error_bad_value);
3839 }
3840
3841 /* Look through the relocs for a section during the first phase, and
3842 allocate space in the global offset table or procedure linkage
3843 table. */
3844
3845 static bfd_boolean
3846 ppc_elf_check_relocs (bfd *abfd,
3847 struct bfd_link_info *info,
3848 asection *sec,
3849 const Elf_Internal_Rela *relocs)
3850 {
3851 struct ppc_elf_link_hash_table *htab;
3852 Elf_Internal_Shdr *symtab_hdr;
3853 struct elf_link_hash_entry **sym_hashes;
3854 const Elf_Internal_Rela *rel;
3855 const Elf_Internal_Rela *rel_end;
3856 asection *got2, *sreloc;
3857 struct elf_link_hash_entry *tga;
3858
3859 if (info->relocatable)
3860 return TRUE;
3861
3862 /* Don't do anything special with non-loaded, non-alloced sections.
3863 In particular, any relocs in such sections should not affect GOT
3864 and PLT reference counting (ie. we don't allow them to create GOT
3865 or PLT entries), there's no possibility or desire to optimize TLS
3866 relocs, and there's not much point in propagating relocs to shared
3867 libs that the dynamic linker won't relocate. */
3868 if ((sec->flags & SEC_ALLOC) == 0)
3869 return TRUE;
3870
3871 #ifdef DEBUG
3872 _bfd_error_handler ("ppc_elf_check_relocs called for section %A in %B",
3873 sec, abfd);
3874 #endif
3875
3876 BFD_ASSERT (is_ppc_elf (abfd));
3877
3878 /* Initialize howto table if not already done. */
3879 if (!ppc_elf_howto_table[R_PPC_ADDR32])
3880 ppc_elf_howto_init ();
3881
3882 htab = ppc_elf_hash_table (info);
3883 if (htab->glink == NULL)
3884 {
3885 if (htab->elf.dynobj == NULL)
3886 htab->elf.dynobj = abfd;
3887 if (!ppc_elf_create_glink (htab->elf.dynobj, info))
3888 return FALSE;
3889 }
3890 tga = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
3891 FALSE, FALSE, TRUE);
3892 symtab_hdr = &elf_symtab_hdr (abfd);
3893 sym_hashes = elf_sym_hashes (abfd);
3894 got2 = bfd_get_section_by_name (abfd, ".got2");
3895 sreloc = NULL;
3896
3897 rel_end = relocs + sec->reloc_count;
3898 for (rel = relocs; rel < rel_end; rel++)
3899 {
3900 unsigned long r_symndx;
3901 enum elf_ppc_reloc_type r_type;
3902 struct elf_link_hash_entry *h;
3903 int tls_type;
3904
3905 r_symndx = ELF32_R_SYM (rel->r_info);
3906 if (r_symndx < symtab_hdr->sh_info)
3907 h = NULL;
3908 else
3909 {
3910 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3911 while (h->root.type == bfd_link_hash_indirect
3912 || h->root.type == bfd_link_hash_warning)
3913 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3914
3915 /* PR15323, ref flags aren't set for references in the same
3916 object. */
3917 h->root.non_ir_ref = 1;
3918 }
3919
3920 /* If a relocation refers to _GLOBAL_OFFSET_TABLE_, create the .got.
3921 This shows up in particular in an R_PPC_ADDR32 in the eabi
3922 startup code. */
3923 if (h != NULL
3924 && htab->got == NULL
3925 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
3926 {
3927 if (htab->elf.dynobj == NULL)
3928 htab->elf.dynobj = abfd;
3929 if (!ppc_elf_create_got (htab->elf.dynobj, info))
3930 return FALSE;
3931 BFD_ASSERT (h == htab->elf.hgot);
3932 }
3933
3934 tls_type = 0;
3935 r_type = ELF32_R_TYPE (rel->r_info);
3936 if (h == NULL && !htab->is_vxworks)
3937 {
3938 Elf_Internal_Sym *isym = bfd_sym_from_r_symndx (&htab->sym_cache,
3939 abfd, r_symndx);
3940 if (isym == NULL)
3941 return FALSE;
3942
3943 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
3944 {
3945 struct plt_entry **ifunc;
3946
3947 /* Set PLT_IFUNC flag for this sym, no GOT entry yet. */
3948 ifunc = update_local_sym_info (abfd, symtab_hdr, r_symndx,
3949 PLT_IFUNC);
3950 if (ifunc == NULL)
3951 return FALSE;
3952
3953 /* STT_GNU_IFUNC symbols must have a PLT entry;
3954 In a non-pie executable even when there are
3955 no plt calls. */
3956 if (!info->shared
3957 || is_branch_reloc (r_type))
3958 {
3959 bfd_vma addend = 0;
3960 if (r_type == R_PPC_PLTREL24)
3961 {
3962 ppc_elf_tdata (abfd)->makes_plt_call = 1;
3963 if (info->shared)
3964 addend = rel->r_addend;
3965 }
3966 if (!update_plt_info (abfd, ifunc, got2, addend))
3967 return FALSE;
3968 }
3969 }
3970 }
3971
3972 if (!htab->is_vxworks
3973 && is_branch_reloc (r_type)
3974 && h != NULL
3975 && h == tga)
3976 {
3977 if (rel != relocs
3978 && (ELF32_R_TYPE (rel[-1].r_info) == R_PPC_TLSGD
3979 || ELF32_R_TYPE (rel[-1].r_info) == R_PPC_TLSLD))
3980 /* We have a new-style __tls_get_addr call with a marker
3981 reloc. */
3982 ;
3983 else
3984 /* Mark this section as having an old-style call. */
3985 sec->has_tls_get_addr_call = 1;
3986 }
3987
3988 switch (r_type)
3989 {
3990 case R_PPC_TLSGD:
3991 case R_PPC_TLSLD:
3992 /* These special tls relocs tie a call to __tls_get_addr with
3993 its parameter symbol. */
3994 break;
3995
3996 case R_PPC_GOT_TLSLD16:
3997 case R_PPC_GOT_TLSLD16_LO:
3998 case R_PPC_GOT_TLSLD16_HI:
3999 case R_PPC_GOT_TLSLD16_HA:
4000 tls_type = TLS_TLS | TLS_LD;
4001 goto dogottls;
4002
4003 case R_PPC_GOT_TLSGD16:
4004 case R_PPC_GOT_TLSGD16_LO:
4005 case R_PPC_GOT_TLSGD16_HI:
4006 case R_PPC_GOT_TLSGD16_HA:
4007 tls_type = TLS_TLS | TLS_GD;
4008 goto dogottls;
4009
4010 case R_PPC_GOT_TPREL16:
4011 case R_PPC_GOT_TPREL16_LO:
4012 case R_PPC_GOT_TPREL16_HI:
4013 case R_PPC_GOT_TPREL16_HA:
4014 if (!info->executable)
4015 info->flags |= DF_STATIC_TLS;
4016 tls_type = TLS_TLS | TLS_TPREL;
4017 goto dogottls;
4018
4019 case R_PPC_GOT_DTPREL16:
4020 case R_PPC_GOT_DTPREL16_LO:
4021 case R_PPC_GOT_DTPREL16_HI:
4022 case R_PPC_GOT_DTPREL16_HA:
4023 tls_type = TLS_TLS | TLS_DTPREL;
4024 dogottls:
4025 sec->has_tls_reloc = 1;
4026 /* Fall thru */
4027
4028 /* GOT16 relocations */
4029 case R_PPC_GOT16:
4030 case R_PPC_GOT16_LO:
4031 case R_PPC_GOT16_HI:
4032 case R_PPC_GOT16_HA:
4033 /* This symbol requires a global offset table entry. */
4034 if (htab->got == NULL)
4035 {
4036 if (htab->elf.dynobj == NULL)
4037 htab->elf.dynobj = abfd;
4038 if (!ppc_elf_create_got (htab->elf.dynobj, info))
4039 return FALSE;
4040 }
4041 if (h != NULL)
4042 {
4043 h->got.refcount += 1;
4044 ppc_elf_hash_entry (h)->tls_mask |= tls_type;
4045 }
4046 else
4047 /* This is a global offset table entry for a local symbol. */
4048 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, tls_type))
4049 return FALSE;
4050
4051 /* We may also need a plt entry if the symbol turns out to be
4052 an ifunc. */
4053 if (h != NULL && !info->shared)
4054 {
4055 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
4056 return FALSE;
4057 }
4058 break;
4059
4060 /* Indirect .sdata relocation. */
4061 case R_PPC_EMB_SDAI16:
4062 if (info->shared)
4063 {
4064 bad_shared_reloc (abfd, r_type);
4065 return FALSE;
4066 }
4067 if (htab->sdata[0].section == NULL
4068 && !ppc_elf_create_linker_section (abfd, info, 0,
4069 &htab->sdata[0]))
4070 return FALSE;
4071 if (!elf_create_pointer_linker_section (abfd, &htab->sdata[0],
4072 h, rel))
4073 return FALSE;
4074 if (h != NULL)
4075 {
4076 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4077 h->non_got_ref = TRUE;
4078 }
4079 break;
4080
4081 /* Indirect .sdata2 relocation. */
4082 case R_PPC_EMB_SDA2I16:
4083 if (info->shared)
4084 {
4085 bad_shared_reloc (abfd, r_type);
4086 return FALSE;
4087 }
4088 if (htab->sdata[1].section == NULL
4089 && !ppc_elf_create_linker_section (abfd, info, SEC_READONLY,
4090 &htab->sdata[1]))
4091 return FALSE;
4092 if (!elf_create_pointer_linker_section (abfd, &htab->sdata[1],
4093 h, rel))
4094 return FALSE;
4095 if (h != NULL)
4096 {
4097 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4098 h->non_got_ref = TRUE;
4099 }
4100 break;
4101
4102 case R_PPC_VLE_SDAREL_LO16A:
4103 case R_PPC_VLE_SDAREL_LO16D:
4104 case R_PPC_VLE_SDAREL_HI16A:
4105 case R_PPC_VLE_SDAREL_HI16D:
4106 case R_PPC_VLE_SDAREL_HA16A:
4107 case R_PPC_VLE_SDAREL_HA16D:
4108 case R_PPC_SDAREL16:
4109 if (htab->sdata[0].sym == NULL
4110 && !create_sdata_sym (info, &htab->sdata[0]))
4111 return FALSE;
4112
4113 if (htab->sdata[1].sym == NULL
4114 && !create_sdata_sym (info, &htab->sdata[1]))
4115 return FALSE;
4116
4117 if (h != NULL)
4118 {
4119 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4120 h->non_got_ref = TRUE;
4121 }
4122 break;
4123
4124 case R_PPC_VLE_REL8:
4125 case R_PPC_VLE_REL15:
4126 case R_PPC_VLE_REL24:
4127 case R_PPC_VLE_LO16A:
4128 case R_PPC_VLE_LO16D:
4129 case R_PPC_VLE_HI16A:
4130 case R_PPC_VLE_HI16D:
4131 case R_PPC_VLE_HA16A:
4132 case R_PPC_VLE_HA16D:
4133 break;
4134
4135 case R_PPC_EMB_SDA2REL:
4136 if (info->shared)
4137 {
4138 bad_shared_reloc (abfd, r_type);
4139 return FALSE;
4140 }
4141 if (htab->sdata[1].sym == NULL
4142 && !create_sdata_sym (info, &htab->sdata[1]))
4143 return FALSE;
4144 if (h != NULL)
4145 {
4146 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4147 h->non_got_ref = TRUE;
4148 }
4149 break;
4150
4151 case R_PPC_VLE_SDA21_LO:
4152 case R_PPC_VLE_SDA21:
4153 case R_PPC_EMB_SDA21:
4154 case R_PPC_EMB_RELSDA:
4155 if (info->shared)
4156 {
4157 bad_shared_reloc (abfd, r_type);
4158 return FALSE;
4159 }
4160 if (htab->sdata[0].sym == NULL
4161 && !create_sdata_sym (info, &htab->sdata[0]))
4162 return FALSE;
4163 if (htab->sdata[1].sym == NULL
4164 && !create_sdata_sym (info, &htab->sdata[1]))
4165 return FALSE;
4166 if (h != NULL)
4167 {
4168 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4169 h->non_got_ref = TRUE;
4170 }
4171 break;
4172
4173 case R_PPC_EMB_NADDR32:
4174 case R_PPC_EMB_NADDR16:
4175 case R_PPC_EMB_NADDR16_LO:
4176 case R_PPC_EMB_NADDR16_HI:
4177 case R_PPC_EMB_NADDR16_HA:
4178 if (info->shared)
4179 {
4180 bad_shared_reloc (abfd, r_type);
4181 return FALSE;
4182 }
4183 if (h != NULL)
4184 h->non_got_ref = TRUE;
4185 break;
4186
4187 case R_PPC_PLTREL24:
4188 if (h == NULL)
4189 break;
4190 /* Fall through */
4191 case R_PPC_PLT32:
4192 case R_PPC_PLTREL32:
4193 case R_PPC_PLT16_LO:
4194 case R_PPC_PLT16_HI:
4195 case R_PPC_PLT16_HA:
4196 #ifdef DEBUG
4197 fprintf (stderr, "Reloc requires a PLT entry\n");
4198 #endif
4199 /* This symbol requires a procedure linkage table entry. We
4200 actually build the entry in finish_dynamic_symbol,
4201 because this might be a case of linking PIC code without
4202 linking in any dynamic objects, in which case we don't
4203 need to generate a procedure linkage table after all. */
4204
4205 if (h == NULL)
4206 {
4207 /* It does not make sense to have a procedure linkage
4208 table entry for a local symbol. */
4209 info->callbacks->einfo (_("%P: %H: %s reloc against local symbol\n"),
4210 abfd, sec, rel->r_offset,
4211 ppc_elf_howto_table[r_type]->name);
4212 bfd_set_error (bfd_error_bad_value);
4213 return FALSE;
4214 }
4215 else
4216 {
4217 bfd_vma addend = 0;
4218
4219 if (r_type == R_PPC_PLTREL24)
4220 {
4221 ppc_elf_tdata (abfd)->makes_plt_call = 1;
4222 if (info->shared)
4223 addend = rel->r_addend;
4224 }
4225 h->needs_plt = 1;
4226 if (!update_plt_info (abfd, &h->plt.plist, got2, addend))
4227 return FALSE;
4228 }
4229 break;
4230
4231 /* The following relocations don't need to propagate the
4232 relocation if linking a shared object since they are
4233 section relative. */
4234 case R_PPC_SECTOFF:
4235 case R_PPC_SECTOFF_LO:
4236 case R_PPC_SECTOFF_HI:
4237 case R_PPC_SECTOFF_HA:
4238 case R_PPC_DTPREL16:
4239 case R_PPC_DTPREL16_LO:
4240 case R_PPC_DTPREL16_HI:
4241 case R_PPC_DTPREL16_HA:
4242 case R_PPC_TOC16:
4243 break;
4244
4245 case R_PPC_REL16:
4246 case R_PPC_REL16_LO:
4247 case R_PPC_REL16_HI:
4248 case R_PPC_REL16_HA:
4249 ppc_elf_tdata (abfd)->has_rel16 = 1;
4250 break;
4251
4252 /* These are just markers. */
4253 case R_PPC_TLS:
4254 case R_PPC_EMB_MRKREF:
4255 case R_PPC_NONE:
4256 case R_PPC_max:
4257 case R_PPC_RELAX:
4258 case R_PPC_RELAX_PLT:
4259 case R_PPC_RELAX_PLTREL24:
4260 break;
4261
4262 /* These should only appear in dynamic objects. */
4263 case R_PPC_COPY:
4264 case R_PPC_GLOB_DAT:
4265 case R_PPC_JMP_SLOT:
4266 case R_PPC_RELATIVE:
4267 case R_PPC_IRELATIVE:
4268 break;
4269
4270 /* These aren't handled yet. We'll report an error later. */
4271 case R_PPC_ADDR30:
4272 case R_PPC_EMB_RELSEC16:
4273 case R_PPC_EMB_RELST_LO:
4274 case R_PPC_EMB_RELST_HI:
4275 case R_PPC_EMB_RELST_HA:
4276 case R_PPC_EMB_BIT_FLD:
4277 break;
4278
4279 /* This refers only to functions defined in the shared library. */
4280 case R_PPC_LOCAL24PC:
4281 if (h != NULL && h == htab->elf.hgot && htab->plt_type == PLT_UNSET)
4282 {
4283 htab->plt_type = PLT_OLD;
4284 htab->old_bfd = abfd;
4285 }
4286 break;
4287
4288 /* This relocation describes the C++ object vtable hierarchy.
4289 Reconstruct it for later use during GC. */
4290 case R_PPC_GNU_VTINHERIT:
4291 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
4292 return FALSE;
4293 break;
4294
4295 /* This relocation describes which C++ vtable entries are actually
4296 used. Record for later use during GC. */
4297 case R_PPC_GNU_VTENTRY:
4298 BFD_ASSERT (h != NULL);
4299 if (h != NULL
4300 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
4301 return FALSE;
4302 break;
4303
4304 /* We shouldn't really be seeing these. */
4305 case R_PPC_TPREL32:
4306 case R_PPC_TPREL16:
4307 case R_PPC_TPREL16_LO:
4308 case R_PPC_TPREL16_HI:
4309 case R_PPC_TPREL16_HA:
4310 if (!info->executable)
4311 info->flags |= DF_STATIC_TLS;
4312 goto dodyn;
4313
4314 /* Nor these. */
4315 case R_PPC_DTPMOD32:
4316 case R_PPC_DTPREL32:
4317 goto dodyn;
4318
4319 case R_PPC_REL32:
4320 if (h == NULL
4321 && got2 != NULL
4322 && (sec->flags & SEC_CODE) != 0
4323 && info->shared
4324 && htab->plt_type == PLT_UNSET)
4325 {
4326 /* Old -fPIC gcc code has .long LCTOC1-LCFx just before
4327 the start of a function, which assembles to a REL32
4328 reference to .got2. If we detect one of these, then
4329 force the old PLT layout because the linker cannot
4330 reliably deduce the GOT pointer value needed for
4331 PLT call stubs. */
4332 asection *s;
4333 Elf_Internal_Sym *isym;
4334
4335 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
4336 abfd, r_symndx);
4337 if (isym == NULL)
4338 return FALSE;
4339
4340 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
4341 if (s == got2)
4342 {
4343 htab->plt_type = PLT_OLD;
4344 htab->old_bfd = abfd;
4345 }
4346 }
4347 if (h == NULL || h == htab->elf.hgot)
4348 break;
4349 /* fall through */
4350
4351 case R_PPC_ADDR32:
4352 case R_PPC_ADDR16:
4353 case R_PPC_ADDR16_LO:
4354 case R_PPC_ADDR16_HI:
4355 case R_PPC_ADDR16_HA:
4356 case R_PPC_UADDR32:
4357 case R_PPC_UADDR16:
4358 if (h != NULL && !info->shared)
4359 {
4360 /* We may need a plt entry if the symbol turns out to be
4361 a function defined in a dynamic object. */
4362 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
4363 return FALSE;
4364
4365 /* We may need a copy reloc too. */
4366 h->non_got_ref = 1;
4367 h->pointer_equality_needed = 1;
4368 }
4369 goto dodyn;
4370
4371 case R_PPC_REL24:
4372 case R_PPC_REL14:
4373 case R_PPC_REL14_BRTAKEN:
4374 case R_PPC_REL14_BRNTAKEN:
4375 if (h == NULL)
4376 break;
4377 if (h == htab->elf.hgot)
4378 {
4379 if (htab->plt_type == PLT_UNSET)
4380 {
4381 htab->plt_type = PLT_OLD;
4382 htab->old_bfd = abfd;
4383 }
4384 break;
4385 }
4386 /* fall through */
4387
4388 case R_PPC_ADDR24:
4389 case R_PPC_ADDR14:
4390 case R_PPC_ADDR14_BRTAKEN:
4391 case R_PPC_ADDR14_BRNTAKEN:
4392 if (h != NULL && !info->shared)
4393 {
4394 /* We may need a plt entry if the symbol turns out to be
4395 a function defined in a dynamic object. */
4396 h->needs_plt = 1;
4397 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
4398 return FALSE;
4399 break;
4400 }
4401
4402 dodyn:
4403 /* If we are creating a shared library, and this is a reloc
4404 against a global symbol, or a non PC relative reloc
4405 against a local symbol, then we need to copy the reloc
4406 into the shared library. However, if we are linking with
4407 -Bsymbolic, we do not need to copy a reloc against a
4408 global symbol which is defined in an object we are
4409 including in the link (i.e., DEF_REGULAR is set). At
4410 this point we have not seen all the input files, so it is
4411 possible that DEF_REGULAR is not set now but will be set
4412 later (it is never cleared). In case of a weak definition,
4413 DEF_REGULAR may be cleared later by a strong definition in
4414 a shared library. We account for that possibility below by
4415 storing information in the dyn_relocs field of the hash
4416 table entry. A similar situation occurs when creating
4417 shared libraries and symbol visibility changes render the
4418 symbol local.
4419
4420 If on the other hand, we are creating an executable, we
4421 may need to keep relocations for symbols satisfied by a
4422 dynamic library if we manage to avoid copy relocs for the
4423 symbol. */
4424 if ((info->shared
4425 && (must_be_dyn_reloc (info, r_type)
4426 || (h != NULL
4427 && (!SYMBOLIC_BIND (info, h)
4428 || h->root.type == bfd_link_hash_defweak
4429 || !h->def_regular))))
4430 || (ELIMINATE_COPY_RELOCS
4431 && !info->shared
4432 && h != NULL
4433 && (h->root.type == bfd_link_hash_defweak
4434 || !h->def_regular)))
4435 {
4436 #ifdef DEBUG
4437 fprintf (stderr,
4438 "ppc_elf_check_relocs needs to "
4439 "create relocation for %s\n",
4440 (h && h->root.root.string
4441 ? h->root.root.string : "<unknown>"));
4442 #endif
4443 if (sreloc == NULL)
4444 {
4445 if (htab->elf.dynobj == NULL)
4446 htab->elf.dynobj = abfd;
4447
4448 sreloc = _bfd_elf_make_dynamic_reloc_section
4449 (sec, htab->elf.dynobj, 2, abfd, /*rela?*/ TRUE);
4450
4451 if (sreloc == NULL)
4452 return FALSE;
4453 }
4454
4455 /* If this is a global symbol, we count the number of
4456 relocations we need for this symbol. */
4457 if (h != NULL)
4458 {
4459 struct elf_dyn_relocs *p;
4460 struct elf_dyn_relocs **rel_head;
4461
4462 rel_head = &ppc_elf_hash_entry (h)->dyn_relocs;
4463 p = *rel_head;
4464 if (p == NULL || p->sec != sec)
4465 {
4466 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
4467 if (p == NULL)
4468 return FALSE;
4469 p->next = *rel_head;
4470 *rel_head = p;
4471 p->sec = sec;
4472 p->count = 0;
4473 p->pc_count = 0;
4474 }
4475 p->count += 1;
4476 if (!must_be_dyn_reloc (info, r_type))
4477 p->pc_count += 1;
4478 }
4479 else
4480 {
4481 /* Track dynamic relocs needed for local syms too.
4482 We really need local syms available to do this
4483 easily. Oh well. */
4484 struct ppc_dyn_relocs *p;
4485 struct ppc_dyn_relocs **rel_head;
4486 bfd_boolean is_ifunc;
4487 asection *s;
4488 void *vpp;
4489 Elf_Internal_Sym *isym;
4490
4491 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
4492 abfd, r_symndx);
4493 if (isym == NULL)
4494 return FALSE;
4495
4496 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
4497 if (s == NULL)
4498 s = sec;
4499
4500 vpp = &elf_section_data (s)->local_dynrel;
4501 rel_head = (struct ppc_dyn_relocs **) vpp;
4502 is_ifunc = ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC;
4503 p = *rel_head;
4504 if (p != NULL && p->sec == sec && p->ifunc != is_ifunc)
4505 p = p->next;
4506 if (p == NULL || p->sec != sec || p->ifunc != is_ifunc)
4507 {
4508 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
4509 if (p == NULL)
4510 return FALSE;
4511 p->next = *rel_head;
4512 *rel_head = p;
4513 p->sec = sec;
4514 p->ifunc = is_ifunc;
4515 p->count = 0;
4516 }
4517 p->count += 1;
4518 }
4519 }
4520
4521 break;
4522 }
4523 }
4524
4525 return TRUE;
4526 }
4527 \f
4528
4529 /* Merge object attributes from IBFD into OBFD. Raise an error if
4530 there are conflicting attributes. */
4531 static bfd_boolean
4532 ppc_elf_merge_obj_attributes (bfd *ibfd, bfd *obfd)
4533 {
4534 obj_attribute *in_attr, *in_attrs;
4535 obj_attribute *out_attr, *out_attrs;
4536
4537 if (!elf_known_obj_attributes_proc (obfd)[0].i)
4538 {
4539 /* This is the first object. Copy the attributes. */
4540 _bfd_elf_copy_obj_attributes (ibfd, obfd);
4541
4542 /* Use the Tag_null value to indicate the attributes have been
4543 initialized. */
4544 elf_known_obj_attributes_proc (obfd)[0].i = 1;
4545
4546 return TRUE;
4547 }
4548
4549 in_attrs = elf_known_obj_attributes (ibfd)[OBJ_ATTR_GNU];
4550 out_attrs = elf_known_obj_attributes (obfd)[OBJ_ATTR_GNU];
4551
4552 /* Check for conflicting Tag_GNU_Power_ABI_FP attributes and merge
4553 non-conflicting ones. */
4554 in_attr = &in_attrs[Tag_GNU_Power_ABI_FP];
4555 out_attr = &out_attrs[Tag_GNU_Power_ABI_FP];
4556 if (in_attr->i != out_attr->i)
4557 {
4558 out_attr->type = 1;
4559 if (out_attr->i == 0)
4560 out_attr->i = in_attr->i;
4561 else if (in_attr->i == 0)
4562 ;
4563 else if (out_attr->i == 1 && in_attr->i == 2)
4564 _bfd_error_handler
4565 (_("Warning: %B uses hard float, %B uses soft float"), obfd, ibfd);
4566 else if (out_attr->i == 1 && in_attr->i == 3)
4567 _bfd_error_handler
4568 (_("Warning: %B uses double-precision hard float, %B uses single-precision hard float"),
4569 obfd, ibfd);
4570 else if (out_attr->i == 3 && in_attr->i == 1)
4571 _bfd_error_handler
4572 (_("Warning: %B uses double-precision hard float, %B uses single-precision hard float"),
4573 ibfd, obfd);
4574 else if (out_attr->i == 3 && in_attr->i == 2)
4575 _bfd_error_handler
4576 (_("Warning: %B uses soft float, %B uses single-precision hard float"),
4577 ibfd, obfd);
4578 else if (out_attr->i == 2 && (in_attr->i == 1 || in_attr->i == 3))
4579 _bfd_error_handler
4580 (_("Warning: %B uses hard float, %B uses soft float"), ibfd, obfd);
4581 else if (in_attr->i > 3)
4582 _bfd_error_handler
4583 (_("Warning: %B uses unknown floating point ABI %d"), ibfd,
4584 in_attr->i);
4585 else
4586 _bfd_error_handler
4587 (_("Warning: %B uses unknown floating point ABI %d"), obfd,
4588 out_attr->i);
4589 }
4590
4591 /* Check for conflicting Tag_GNU_Power_ABI_Vector attributes and
4592 merge non-conflicting ones. */
4593 in_attr = &in_attrs[Tag_GNU_Power_ABI_Vector];
4594 out_attr = &out_attrs[Tag_GNU_Power_ABI_Vector];
4595 if (in_attr->i != out_attr->i)
4596 {
4597 const char *in_abi = NULL, *out_abi = NULL;
4598
4599 switch (in_attr->i)
4600 {
4601 case 1: in_abi = "generic"; break;
4602 case 2: in_abi = "AltiVec"; break;
4603 case 3: in_abi = "SPE"; break;
4604 }
4605
4606 switch (out_attr->i)
4607 {
4608 case 1: out_abi = "generic"; break;
4609 case 2: out_abi = "AltiVec"; break;
4610 case 3: out_abi = "SPE"; break;
4611 }
4612
4613 out_attr->type = 1;
4614 if (out_attr->i == 0)
4615 out_attr->i = in_attr->i;
4616 else if (in_attr->i == 0)
4617 ;
4618 /* For now, allow generic to transition to AltiVec or SPE
4619 without a warning. If GCC marked files with their stack
4620 alignment and used don't-care markings for files which are
4621 not affected by the vector ABI, we could warn about this
4622 case too. */
4623 else if (out_attr->i == 1)
4624 out_attr->i = in_attr->i;
4625 else if (in_attr->i == 1)
4626 ;
4627 else if (in_abi == NULL)
4628 _bfd_error_handler
4629 (_("Warning: %B uses unknown vector ABI %d"), ibfd,
4630 in_attr->i);
4631 else if (out_abi == NULL)
4632 _bfd_error_handler
4633 (_("Warning: %B uses unknown vector ABI %d"), obfd,
4634 in_attr->i);
4635 else
4636 _bfd_error_handler
4637 (_("Warning: %B uses vector ABI \"%s\", %B uses \"%s\""),
4638 ibfd, obfd, in_abi, out_abi);
4639 }
4640
4641 /* Check for conflicting Tag_GNU_Power_ABI_Struct_Return attributes
4642 and merge non-conflicting ones. */
4643 in_attr = &in_attrs[Tag_GNU_Power_ABI_Struct_Return];
4644 out_attr = &out_attrs[Tag_GNU_Power_ABI_Struct_Return];
4645 if (in_attr->i != out_attr->i)
4646 {
4647 out_attr->type = 1;
4648 if (out_attr->i == 0)
4649 out_attr->i = in_attr->i;
4650 else if (in_attr->i == 0)
4651 ;
4652 else if (out_attr->i == 1 && in_attr->i == 2)
4653 _bfd_error_handler
4654 (_("Warning: %B uses r3/r4 for small structure returns, %B uses memory"), obfd, ibfd);
4655 else if (out_attr->i == 2 && in_attr->i == 1)
4656 _bfd_error_handler
4657 (_("Warning: %B uses r3/r4 for small structure returns, %B uses memory"), ibfd, obfd);
4658 else if (in_attr->i > 2)
4659 _bfd_error_handler
4660 (_("Warning: %B uses unknown small structure return convention %d"), ibfd,
4661 in_attr->i);
4662 else
4663 _bfd_error_handler
4664 (_("Warning: %B uses unknown small structure return convention %d"), obfd,
4665 out_attr->i);
4666 }
4667
4668 /* Merge Tag_compatibility attributes and any common GNU ones. */
4669 _bfd_elf_merge_object_attributes (ibfd, obfd);
4670
4671 return TRUE;
4672 }
4673
4674 /* Merge backend specific data from an object file to the output
4675 object file when linking. */
4676
4677 static bfd_boolean
4678 ppc_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
4679 {
4680 flagword old_flags;
4681 flagword new_flags;
4682 bfd_boolean error;
4683
4684 if (!is_ppc_elf (ibfd) || !is_ppc_elf (obfd))
4685 return TRUE;
4686
4687 /* Check if we have the same endianness. */
4688 if (! _bfd_generic_verify_endian_match (ibfd, obfd))
4689 return FALSE;
4690
4691 if (!ppc_elf_merge_obj_attributes (ibfd, obfd))
4692 return FALSE;
4693
4694 new_flags = elf_elfheader (ibfd)->e_flags;
4695 old_flags = elf_elfheader (obfd)->e_flags;
4696 if (!elf_flags_init (obfd))
4697 {
4698 /* First call, no flags set. */
4699 elf_flags_init (obfd) = TRUE;
4700 elf_elfheader (obfd)->e_flags = new_flags;
4701 }
4702
4703 /* Compatible flags are ok. */
4704 else if (new_flags == old_flags)
4705 ;
4706
4707 /* Incompatible flags. */
4708 else
4709 {
4710 /* Warn about -mrelocatable mismatch. Allow -mrelocatable-lib
4711 to be linked with either. */
4712 error = FALSE;
4713 if ((new_flags & EF_PPC_RELOCATABLE) != 0
4714 && (old_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0)
4715 {
4716 error = TRUE;
4717 (*_bfd_error_handler)
4718 (_("%B: compiled with -mrelocatable and linked with "
4719 "modules compiled normally"), ibfd);
4720 }
4721 else if ((new_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0
4722 && (old_flags & EF_PPC_RELOCATABLE) != 0)
4723 {
4724 error = TRUE;
4725 (*_bfd_error_handler)
4726 (_("%B: compiled normally and linked with "
4727 "modules compiled with -mrelocatable"), ibfd);
4728 }
4729
4730 /* The output is -mrelocatable-lib iff both the input files are. */
4731 if (! (new_flags & EF_PPC_RELOCATABLE_LIB))
4732 elf_elfheader (obfd)->e_flags &= ~EF_PPC_RELOCATABLE_LIB;
4733
4734 /* The output is -mrelocatable iff it can't be -mrelocatable-lib,
4735 but each input file is either -mrelocatable or -mrelocatable-lib. */
4736 if (! (elf_elfheader (obfd)->e_flags & EF_PPC_RELOCATABLE_LIB)
4737 && (new_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE))
4738 && (old_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE)))
4739 elf_elfheader (obfd)->e_flags |= EF_PPC_RELOCATABLE;
4740
4741 /* Do not warn about eabi vs. V.4 mismatch, just or in the bit if
4742 any module uses it. */
4743 elf_elfheader (obfd)->e_flags |= (new_flags & EF_PPC_EMB);
4744
4745 new_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
4746 old_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
4747
4748 /* Warn about any other mismatches. */
4749 if (new_flags != old_flags)
4750 {
4751 error = TRUE;
4752 (*_bfd_error_handler)
4753 (_("%B: uses different e_flags (0x%lx) fields "
4754 "than previous modules (0x%lx)"),
4755 ibfd, (long) new_flags, (long) old_flags);
4756 }
4757
4758 if (error)
4759 {
4760 bfd_set_error (bfd_error_bad_value);
4761 return FALSE;
4762 }
4763 }
4764
4765 return TRUE;
4766 }
4767
4768 static void
4769 ppc_elf_vle_split16 (bfd *output_bfd, bfd_byte *contents,
4770 bfd_vma offset, bfd_vma relocation,
4771 split16_format_type split16_format)
4772
4773 {
4774 bfd_vma insn, top5, bottom11;
4775
4776 insn = bfd_get_32 (output_bfd, contents + offset);
4777 top5 = relocation >> 11;
4778 top5 = top5 << (split16_format == split16a_type ? 20 : 16);
4779 bottom11 = relocation & 0x7ff;
4780 insn |= top5;
4781 insn |= bottom11;
4782 bfd_put_32 (output_bfd, insn, contents + offset);
4783 }
4784
4785 \f
4786 /* Choose which PLT scheme to use, and set .plt flags appropriately.
4787 Returns -1 on error, 0 for old PLT, 1 for new PLT. */
4788 int
4789 ppc_elf_select_plt_layout (bfd *output_bfd ATTRIBUTE_UNUSED,
4790 struct bfd_link_info *info,
4791 enum ppc_elf_plt_type plt_style,
4792 int emit_stub_syms)
4793 {
4794 struct ppc_elf_link_hash_table *htab;
4795 flagword flags;
4796
4797 htab = ppc_elf_hash_table (info);
4798
4799 htab->emit_stub_syms = emit_stub_syms;
4800
4801 if (htab->plt_type == PLT_UNSET)
4802 {
4803 struct elf_link_hash_entry *h;
4804
4805 if (plt_style == PLT_OLD)
4806 htab->plt_type = PLT_OLD;
4807 else if (info->shared
4808 && htab->elf.dynamic_sections_created
4809 && (h = elf_link_hash_lookup (&htab->elf, "_mcount",
4810 FALSE, FALSE, TRUE)) != NULL
4811 && (h->type == STT_FUNC
4812 || h->needs_plt)
4813 && h->ref_regular
4814 && !(SYMBOL_CALLS_LOCAL (info, h)
4815 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
4816 && h->root.type == bfd_link_hash_undefweak)))
4817 {
4818 /* Profiling of shared libs (and pies) is not supported with
4819 secure plt, because ppc32 does profiling before a
4820 function prologue and a secure plt pic call stubs needs
4821 r30 to be set up. */
4822 htab->plt_type = PLT_OLD;
4823 }
4824 else
4825 {
4826 bfd *ibfd;
4827 enum ppc_elf_plt_type plt_type = plt_style;
4828
4829 /* Look through the reloc flags left by ppc_elf_check_relocs.
4830 Use the old style bss plt if a file makes plt calls
4831 without using the new relocs, and if ld isn't given
4832 --secure-plt and we never see REL16 relocs. */
4833 if (plt_type == PLT_UNSET)
4834 plt_type = PLT_OLD;
4835 for (ibfd = info->input_bfds; ibfd; ibfd = ibfd->link_next)
4836 if (is_ppc_elf (ibfd))
4837 {
4838 if (ppc_elf_tdata (ibfd)->has_rel16)
4839 plt_type = PLT_NEW;
4840 else if (ppc_elf_tdata (ibfd)->makes_plt_call)
4841 {
4842 plt_type = PLT_OLD;
4843 htab->old_bfd = ibfd;
4844 break;
4845 }
4846 }
4847 htab->plt_type = plt_type;
4848 }
4849 }
4850 if (htab->plt_type == PLT_OLD && plt_style == PLT_NEW)
4851 {
4852 if (htab->old_bfd != NULL)
4853 info->callbacks->einfo (_("%P: bss-plt forced due to %B\n"),
4854 htab->old_bfd);
4855 else
4856 info->callbacks->einfo (_("%P: bss-plt forced by profiling\n"));
4857 }
4858
4859 BFD_ASSERT (htab->plt_type != PLT_VXWORKS);
4860
4861 if (htab->plt_type == PLT_NEW)
4862 {
4863 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
4864 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4865
4866 /* The new PLT is a loaded section. */
4867 if (htab->plt != NULL
4868 && !bfd_set_section_flags (htab->elf.dynobj, htab->plt, flags))
4869 return -1;
4870
4871 /* The new GOT is not executable. */
4872 if (htab->got != NULL
4873 && !bfd_set_section_flags (htab->elf.dynobj, htab->got, flags))
4874 return -1;
4875 }
4876 else
4877 {
4878 /* Stop an unused .glink section from affecting .text alignment. */
4879 if (htab->glink != NULL
4880 && !bfd_set_section_alignment (htab->elf.dynobj, htab->glink, 0))
4881 return -1;
4882 }
4883 return htab->plt_type == PLT_NEW;
4884 }
4885 \f
4886 /* Return the section that should be marked against GC for a given
4887 relocation. */
4888
4889 static asection *
4890 ppc_elf_gc_mark_hook (asection *sec,
4891 struct bfd_link_info *info,
4892 Elf_Internal_Rela *rel,
4893 struct elf_link_hash_entry *h,
4894 Elf_Internal_Sym *sym)
4895 {
4896 if (h != NULL)
4897 switch (ELF32_R_TYPE (rel->r_info))
4898 {
4899 case R_PPC_GNU_VTINHERIT:
4900 case R_PPC_GNU_VTENTRY:
4901 return NULL;
4902 }
4903
4904 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
4905 }
4906
4907 /* Update the got, plt and dynamic reloc reference counts for the
4908 section being removed. */
4909
4910 static bfd_boolean
4911 ppc_elf_gc_sweep_hook (bfd *abfd,
4912 struct bfd_link_info *info,
4913 asection *sec,
4914 const Elf_Internal_Rela *relocs)
4915 {
4916 struct ppc_elf_link_hash_table *htab;
4917 Elf_Internal_Shdr *symtab_hdr;
4918 struct elf_link_hash_entry **sym_hashes;
4919 bfd_signed_vma *local_got_refcounts;
4920 const Elf_Internal_Rela *rel, *relend;
4921 asection *got2;
4922
4923 if (info->relocatable)
4924 return TRUE;
4925
4926 if ((sec->flags & SEC_ALLOC) == 0)
4927 return TRUE;
4928
4929 elf_section_data (sec)->local_dynrel = NULL;
4930
4931 htab = ppc_elf_hash_table (info);
4932 symtab_hdr = &elf_symtab_hdr (abfd);
4933 sym_hashes = elf_sym_hashes (abfd);
4934 local_got_refcounts = elf_local_got_refcounts (abfd);
4935 got2 = bfd_get_section_by_name (abfd, ".got2");
4936
4937 relend = relocs + sec->reloc_count;
4938 for (rel = relocs; rel < relend; rel++)
4939 {
4940 unsigned long r_symndx;
4941 enum elf_ppc_reloc_type r_type;
4942 struct elf_link_hash_entry *h = NULL;
4943
4944 r_symndx = ELF32_R_SYM (rel->r_info);
4945 if (r_symndx >= symtab_hdr->sh_info)
4946 {
4947 struct elf_dyn_relocs **pp, *p;
4948 struct ppc_elf_link_hash_entry *eh;
4949
4950 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4951 while (h->root.type == bfd_link_hash_indirect
4952 || h->root.type == bfd_link_hash_warning)
4953 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4954 eh = (struct ppc_elf_link_hash_entry *) h;
4955
4956 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
4957 if (p->sec == sec)
4958 {
4959 /* Everything must go for SEC. */
4960 *pp = p->next;
4961 break;
4962 }
4963 }
4964
4965 r_type = ELF32_R_TYPE (rel->r_info);
4966 if (!htab->is_vxworks
4967 && h == NULL
4968 && local_got_refcounts != NULL
4969 && (!info->shared
4970 || is_branch_reloc (r_type)))
4971 {
4972 struct plt_entry **local_plt = (struct plt_entry **)
4973 (local_got_refcounts + symtab_hdr->sh_info);
4974 char *local_got_tls_masks = (char *)
4975 (local_plt + symtab_hdr->sh_info);
4976 if ((local_got_tls_masks[r_symndx] & PLT_IFUNC) != 0)
4977 {
4978 struct plt_entry **ifunc = local_plt + r_symndx;
4979 bfd_vma addend = 0;
4980 struct plt_entry *ent;
4981
4982 if (r_type == R_PPC_PLTREL24 && info->shared)
4983 addend = rel->r_addend;
4984 ent = find_plt_ent (ifunc, got2, addend);
4985 if (ent->plt.refcount > 0)
4986 ent->plt.refcount -= 1;
4987 continue;
4988 }
4989 }
4990
4991 switch (r_type)
4992 {
4993 case R_PPC_GOT_TLSLD16:
4994 case R_PPC_GOT_TLSLD16_LO:
4995 case R_PPC_GOT_TLSLD16_HI:
4996 case R_PPC_GOT_TLSLD16_HA:
4997 case R_PPC_GOT_TLSGD16:
4998 case R_PPC_GOT_TLSGD16_LO:
4999 case R_PPC_GOT_TLSGD16_HI:
5000 case R_PPC_GOT_TLSGD16_HA:
5001 case R_PPC_GOT_TPREL16:
5002 case R_PPC_GOT_TPREL16_LO:
5003 case R_PPC_GOT_TPREL16_HI:
5004 case R_PPC_GOT_TPREL16_HA:
5005 case R_PPC_GOT_DTPREL16:
5006 case R_PPC_GOT_DTPREL16_LO:
5007 case R_PPC_GOT_DTPREL16_HI:
5008 case R_PPC_GOT_DTPREL16_HA:
5009 case R_PPC_GOT16:
5010 case R_PPC_GOT16_LO:
5011 case R_PPC_GOT16_HI:
5012 case R_PPC_GOT16_HA:
5013 if (h != NULL)
5014 {
5015 if (h->got.refcount > 0)
5016 h->got.refcount--;
5017 if (!info->shared)
5018 {
5019 struct plt_entry *ent;
5020
5021 ent = find_plt_ent (&h->plt.plist, NULL, 0);
5022 if (ent != NULL && ent->plt.refcount > 0)
5023 ent->plt.refcount -= 1;
5024 }
5025 }
5026 else if (local_got_refcounts != NULL)
5027 {
5028 if (local_got_refcounts[r_symndx] > 0)
5029 local_got_refcounts[r_symndx]--;
5030 }
5031 break;
5032
5033 case R_PPC_REL24:
5034 case R_PPC_REL14:
5035 case R_PPC_REL14_BRTAKEN:
5036 case R_PPC_REL14_BRNTAKEN:
5037 case R_PPC_REL32:
5038 if (h == NULL || h == htab->elf.hgot)
5039 break;
5040 /* Fall thru */
5041
5042 case R_PPC_ADDR32:
5043 case R_PPC_ADDR24:
5044 case R_PPC_ADDR16:
5045 case R_PPC_ADDR16_LO:
5046 case R_PPC_ADDR16_HI:
5047 case R_PPC_ADDR16_HA:
5048 case R_PPC_ADDR14:
5049 case R_PPC_ADDR14_BRTAKEN:
5050 case R_PPC_ADDR14_BRNTAKEN:
5051 case R_PPC_UADDR32:
5052 case R_PPC_UADDR16:
5053 if (info->shared)
5054 break;
5055
5056 case R_PPC_PLT32:
5057 case R_PPC_PLTREL24:
5058 case R_PPC_PLTREL32:
5059 case R_PPC_PLT16_LO:
5060 case R_PPC_PLT16_HI:
5061 case R_PPC_PLT16_HA:
5062 if (h != NULL)
5063 {
5064 bfd_vma addend = 0;
5065 struct plt_entry *ent;
5066
5067 if (r_type == R_PPC_PLTREL24 && info->shared)
5068 addend = rel->r_addend;
5069 ent = find_plt_ent (&h->plt.plist, got2, addend);
5070 if (ent != NULL && ent->plt.refcount > 0)
5071 ent->plt.refcount -= 1;
5072 }
5073 break;
5074
5075 default:
5076 break;
5077 }
5078 }
5079 return TRUE;
5080 }
5081 \f
5082 /* Set plt output section type, htab->tls_get_addr, and call the
5083 generic ELF tls_setup function. */
5084
5085 asection *
5086 ppc_elf_tls_setup (bfd *obfd,
5087 struct bfd_link_info *info,
5088 int no_tls_get_addr_opt)
5089 {
5090 struct ppc_elf_link_hash_table *htab;
5091
5092 htab = ppc_elf_hash_table (info);
5093 htab->tls_get_addr = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
5094 FALSE, FALSE, TRUE);
5095 if (!no_tls_get_addr_opt)
5096 {
5097 struct elf_link_hash_entry *opt, *tga;
5098 opt = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_opt",
5099 FALSE, FALSE, TRUE);
5100 if (opt != NULL
5101 && (opt->root.type == bfd_link_hash_defined
5102 || opt->root.type == bfd_link_hash_defweak))
5103 {
5104 /* If glibc supports an optimized __tls_get_addr call stub,
5105 signalled by the presence of __tls_get_addr_opt, and we'll
5106 be calling __tls_get_addr via a plt call stub, then
5107 make __tls_get_addr point to __tls_get_addr_opt. */
5108 tga = htab->tls_get_addr;
5109 if (htab->elf.dynamic_sections_created
5110 && tga != NULL
5111 && (tga->type == STT_FUNC
5112 || tga->needs_plt)
5113 && !(SYMBOL_CALLS_LOCAL (info, tga)
5114 || (ELF_ST_VISIBILITY (tga->other) != STV_DEFAULT
5115 && tga->root.type == bfd_link_hash_undefweak)))
5116 {
5117 struct plt_entry *ent;
5118 for (ent = tga->plt.plist; ent != NULL; ent = ent->next)
5119 if (ent->plt.refcount > 0)
5120 break;
5121 if (ent != NULL)
5122 {
5123 tga->root.type = bfd_link_hash_indirect;
5124 tga->root.u.i.link = &opt->root;
5125 ppc_elf_copy_indirect_symbol (info, opt, tga);
5126 if (opt->dynindx != -1)
5127 {
5128 /* Use __tls_get_addr_opt in dynamic relocations. */
5129 opt->dynindx = -1;
5130 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
5131 opt->dynstr_index);
5132 if (!bfd_elf_link_record_dynamic_symbol (info, opt))
5133 return FALSE;
5134 }
5135 htab->tls_get_addr = opt;
5136 }
5137 }
5138 }
5139 else
5140 no_tls_get_addr_opt = TRUE;
5141 }
5142 htab->no_tls_get_addr_opt = no_tls_get_addr_opt;
5143 if (htab->plt_type == PLT_NEW
5144 && htab->plt != NULL
5145 && htab->plt->output_section != NULL)
5146 {
5147 elf_section_type (htab->plt->output_section) = SHT_PROGBITS;
5148 elf_section_flags (htab->plt->output_section) = SHF_ALLOC + SHF_WRITE;
5149 }
5150
5151 return _bfd_elf_tls_setup (obfd, info);
5152 }
5153
5154 /* Return TRUE iff REL is a branch reloc with a global symbol matching
5155 HASH. */
5156
5157 static bfd_boolean
5158 branch_reloc_hash_match (const bfd *ibfd,
5159 const Elf_Internal_Rela *rel,
5160 const struct elf_link_hash_entry *hash)
5161 {
5162 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
5163 enum elf_ppc_reloc_type r_type = ELF32_R_TYPE (rel->r_info);
5164 unsigned int r_symndx = ELF32_R_SYM (rel->r_info);
5165
5166 if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type))
5167 {
5168 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
5169 struct elf_link_hash_entry *h;
5170
5171 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5172 while (h->root.type == bfd_link_hash_indirect
5173 || h->root.type == bfd_link_hash_warning)
5174 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5175 if (h == hash)
5176 return TRUE;
5177 }
5178 return FALSE;
5179 }
5180
5181 /* Run through all the TLS relocs looking for optimization
5182 opportunities. */
5183
5184 bfd_boolean
5185 ppc_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED,
5186 struct bfd_link_info *info)
5187 {
5188 bfd *ibfd;
5189 asection *sec;
5190 struct ppc_elf_link_hash_table *htab;
5191 int pass;
5192
5193 if (info->relocatable || !info->executable)
5194 return TRUE;
5195
5196 htab = ppc_elf_hash_table (info);
5197 if (htab == NULL)
5198 return FALSE;
5199
5200 /* Make two passes through the relocs. First time check that tls
5201 relocs involved in setting up a tls_get_addr call are indeed
5202 followed by such a call. If they are not, don't do any tls
5203 optimization. On the second pass twiddle tls_mask flags to
5204 notify relocate_section that optimization can be done, and
5205 adjust got and plt refcounts. */
5206 for (pass = 0; pass < 2; ++pass)
5207 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
5208 {
5209 Elf_Internal_Sym *locsyms = NULL;
5210 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
5211 asection *got2 = bfd_get_section_by_name (ibfd, ".got2");
5212
5213 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
5214 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
5215 {
5216 Elf_Internal_Rela *relstart, *rel, *relend;
5217 int expecting_tls_get_addr = 0;
5218
5219 /* Read the relocations. */
5220 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
5221 info->keep_memory);
5222 if (relstart == NULL)
5223 return FALSE;
5224
5225 relend = relstart + sec->reloc_count;
5226 for (rel = relstart; rel < relend; rel++)
5227 {
5228 enum elf_ppc_reloc_type r_type;
5229 unsigned long r_symndx;
5230 struct elf_link_hash_entry *h = NULL;
5231 char *tls_mask;
5232 char tls_set, tls_clear;
5233 bfd_boolean is_local;
5234 bfd_signed_vma *got_count;
5235
5236 r_symndx = ELF32_R_SYM (rel->r_info);
5237 if (r_symndx >= symtab_hdr->sh_info)
5238 {
5239 struct elf_link_hash_entry **sym_hashes;
5240
5241 sym_hashes = elf_sym_hashes (ibfd);
5242 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5243 while (h->root.type == bfd_link_hash_indirect
5244 || h->root.type == bfd_link_hash_warning)
5245 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5246 }
5247
5248 is_local = FALSE;
5249 if (h == NULL
5250 || !h->def_dynamic)
5251 is_local = TRUE;
5252
5253 r_type = ELF32_R_TYPE (rel->r_info);
5254 /* If this section has old-style __tls_get_addr calls
5255 without marker relocs, then check that each
5256 __tls_get_addr call reloc is preceded by a reloc
5257 that conceivably belongs to the __tls_get_addr arg
5258 setup insn. If we don't find matching arg setup
5259 relocs, don't do any tls optimization. */
5260 if (pass == 0
5261 && sec->has_tls_get_addr_call
5262 && h != NULL
5263 && h == htab->tls_get_addr
5264 && !expecting_tls_get_addr
5265 && is_branch_reloc (r_type))
5266 {
5267 info->callbacks->minfo ("%H __tls_get_addr lost arg, "
5268 "TLS optimization disabled\n",
5269 ibfd, sec, rel->r_offset);
5270 if (elf_section_data (sec)->relocs != relstart)
5271 free (relstart);
5272 return TRUE;
5273 }
5274
5275 expecting_tls_get_addr = 0;
5276 switch (r_type)
5277 {
5278 case R_PPC_GOT_TLSLD16:
5279 case R_PPC_GOT_TLSLD16_LO:
5280 expecting_tls_get_addr = 1;
5281 /* Fall thru */
5282
5283 case R_PPC_GOT_TLSLD16_HI:
5284 case R_PPC_GOT_TLSLD16_HA:
5285 /* These relocs should never be against a symbol
5286 defined in a shared lib. Leave them alone if
5287 that turns out to be the case. */
5288 if (!is_local)
5289 continue;
5290
5291 /* LD -> LE */
5292 tls_set = 0;
5293 tls_clear = TLS_LD;
5294 break;
5295
5296 case R_PPC_GOT_TLSGD16:
5297 case R_PPC_GOT_TLSGD16_LO:
5298 expecting_tls_get_addr = 1;
5299 /* Fall thru */
5300
5301 case R_PPC_GOT_TLSGD16_HI:
5302 case R_PPC_GOT_TLSGD16_HA:
5303 if (is_local)
5304 /* GD -> LE */
5305 tls_set = 0;
5306 else
5307 /* GD -> IE */
5308 tls_set = TLS_TLS | TLS_TPRELGD;
5309 tls_clear = TLS_GD;
5310 break;
5311
5312 case R_PPC_GOT_TPREL16:
5313 case R_PPC_GOT_TPREL16_LO:
5314 case R_PPC_GOT_TPREL16_HI:
5315 case R_PPC_GOT_TPREL16_HA:
5316 if (is_local)
5317 {
5318 /* IE -> LE */
5319 tls_set = 0;
5320 tls_clear = TLS_TPREL;
5321 break;
5322 }
5323 else
5324 continue;
5325
5326 case R_PPC_TLSGD:
5327 case R_PPC_TLSLD:
5328 expecting_tls_get_addr = 2;
5329 tls_set = 0;
5330 tls_clear = 0;
5331 break;
5332
5333 default:
5334 continue;
5335 }
5336
5337 if (pass == 0)
5338 {
5339 if (!expecting_tls_get_addr
5340 || (expecting_tls_get_addr == 1
5341 && !sec->has_tls_get_addr_call))
5342 continue;
5343
5344 if (rel + 1 < relend
5345 && branch_reloc_hash_match (ibfd, rel + 1,
5346 htab->tls_get_addr))
5347 continue;
5348
5349 /* Uh oh, we didn't find the expected call. We
5350 could just mark this symbol to exclude it
5351 from tls optimization but it's safer to skip
5352 the entire optimization. */
5353 info->callbacks->minfo (_("%H arg lost __tls_get_addr, "
5354 "TLS optimization disabled\n"),
5355 ibfd, sec, rel->r_offset);
5356 if (elf_section_data (sec)->relocs != relstart)
5357 free (relstart);
5358 return TRUE;
5359 }
5360
5361 if (expecting_tls_get_addr)
5362 {
5363 struct plt_entry *ent;
5364 bfd_vma addend = 0;
5365
5366 if (info->shared
5367 && ELF32_R_TYPE (rel[1].r_info) == R_PPC_PLTREL24)
5368 addend = rel[1].r_addend;
5369 ent = find_plt_ent (&htab->tls_get_addr->plt.plist,
5370 got2, addend);
5371 if (ent != NULL && ent->plt.refcount > 0)
5372 ent->plt.refcount -= 1;
5373
5374 if (expecting_tls_get_addr == 2)
5375 continue;
5376 }
5377
5378 if (h != NULL)
5379 {
5380 tls_mask = &ppc_elf_hash_entry (h)->tls_mask;
5381 got_count = &h->got.refcount;
5382 }
5383 else
5384 {
5385 bfd_signed_vma *lgot_refs;
5386 struct plt_entry **local_plt;
5387 char *lgot_masks;
5388
5389 if (locsyms == NULL)
5390 {
5391 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
5392 if (locsyms == NULL)
5393 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
5394 symtab_hdr->sh_info,
5395 0, NULL, NULL, NULL);
5396 if (locsyms == NULL)
5397 {
5398 if (elf_section_data (sec)->relocs != relstart)
5399 free (relstart);
5400 return FALSE;
5401 }
5402 }
5403 lgot_refs = elf_local_got_refcounts (ibfd);
5404 if (lgot_refs == NULL)
5405 abort ();
5406 local_plt = (struct plt_entry **)
5407 (lgot_refs + symtab_hdr->sh_info);
5408 lgot_masks = (char *) (local_plt + symtab_hdr->sh_info);
5409 tls_mask = &lgot_masks[r_symndx];
5410 got_count = &lgot_refs[r_symndx];
5411 }
5412
5413 if (tls_set == 0)
5414 {
5415 /* We managed to get rid of a got entry. */
5416 if (*got_count > 0)
5417 *got_count -= 1;
5418 }
5419
5420 *tls_mask |= tls_set;
5421 *tls_mask &= ~tls_clear;
5422 }
5423
5424 if (elf_section_data (sec)->relocs != relstart)
5425 free (relstart);
5426 }
5427
5428 if (locsyms != NULL
5429 && (symtab_hdr->contents != (unsigned char *) locsyms))
5430 {
5431 if (!info->keep_memory)
5432 free (locsyms);
5433 else
5434 symtab_hdr->contents = (unsigned char *) locsyms;
5435 }
5436 }
5437 return TRUE;
5438 }
5439 \f
5440 /* Return true if we have dynamic relocs that apply to read-only sections. */
5441
5442 static bfd_boolean
5443 readonly_dynrelocs (struct elf_link_hash_entry *h)
5444 {
5445 struct elf_dyn_relocs *p;
5446
5447 for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next)
5448 {
5449 asection *s = p->sec->output_section;
5450
5451 if (s != NULL
5452 && ((s->flags & (SEC_READONLY | SEC_ALLOC))
5453 == (SEC_READONLY | SEC_ALLOC)))
5454 return TRUE;
5455 }
5456 return FALSE;
5457 }
5458
5459 /* Adjust a symbol defined by a dynamic object and referenced by a
5460 regular object. The current definition is in some section of the
5461 dynamic object, but we're not including those sections. We have to
5462 change the definition to something the rest of the link can
5463 understand. */
5464
5465 static bfd_boolean
5466 ppc_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
5467 struct elf_link_hash_entry *h)
5468 {
5469 struct ppc_elf_link_hash_table *htab;
5470 asection *s;
5471
5472 #ifdef DEBUG
5473 fprintf (stderr, "ppc_elf_adjust_dynamic_symbol called for %s\n",
5474 h->root.root.string);
5475 #endif
5476
5477 /* Make sure we know what is going on here. */
5478 htab = ppc_elf_hash_table (info);
5479 BFD_ASSERT (htab->elf.dynobj != NULL
5480 && (h->needs_plt
5481 || h->type == STT_GNU_IFUNC
5482 || h->u.weakdef != NULL
5483 || (h->def_dynamic
5484 && h->ref_regular
5485 && !h->def_regular)));
5486
5487 /* Deal with function syms. */
5488 if (h->type == STT_FUNC
5489 || h->type == STT_GNU_IFUNC
5490 || h->needs_plt)
5491 {
5492 /* Clear procedure linkage table information for any symbol that
5493 won't need a .plt entry. */
5494 struct plt_entry *ent;
5495 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
5496 if (ent->plt.refcount > 0)
5497 break;
5498 if (ent == NULL
5499 || (h->type != STT_GNU_IFUNC
5500 && (SYMBOL_CALLS_LOCAL (info, h)
5501 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
5502 && h->root.type == bfd_link_hash_undefweak))))
5503 {
5504 /* A PLT entry is not required/allowed when:
5505
5506 1. We are not using ld.so; because then the PLT entry
5507 can't be set up, so we can't use one. In this case,
5508 ppc_elf_adjust_dynamic_symbol won't even be called.
5509
5510 2. GC has rendered the entry unused.
5511
5512 3. We know for certain that a call to this symbol
5513 will go to this object, or will remain undefined. */
5514 h->plt.plist = NULL;
5515 h->needs_plt = 0;
5516 }
5517 else
5518 {
5519 /* After adjust_dynamic_symbol, non_got_ref set in the
5520 non-shared case means that we have allocated space in
5521 .dynbss for the symbol and thus dyn_relocs for this
5522 symbol should be discarded.
5523 If we get here we know we are making a PLT entry for this
5524 symbol, and in an executable we'd normally resolve
5525 relocations against this symbol to the PLT entry. Allow
5526 dynamic relocs if the reference is weak, and the dynamic
5527 relocs will not cause text relocation. */
5528 if (!h->ref_regular_nonweak
5529 && h->non_got_ref
5530 && h->type != STT_GNU_IFUNC
5531 && !htab->is_vxworks
5532 && !ppc_elf_hash_entry (h)->has_sda_refs
5533 && !readonly_dynrelocs (h))
5534 h->non_got_ref = 0;
5535 }
5536 return TRUE;
5537 }
5538 else
5539 h->plt.plist = NULL;
5540
5541 /* If this is a weak symbol, and there is a real definition, the
5542 processor independent code will have arranged for us to see the
5543 real definition first, and we can just use the same value. */
5544 if (h->u.weakdef != NULL)
5545 {
5546 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
5547 || h->u.weakdef->root.type == bfd_link_hash_defweak);
5548 h->root.u.def.section = h->u.weakdef->root.u.def.section;
5549 h->root.u.def.value = h->u.weakdef->root.u.def.value;
5550 if (ELIMINATE_COPY_RELOCS)
5551 h->non_got_ref = h->u.weakdef->non_got_ref;
5552 return TRUE;
5553 }
5554
5555 /* This is a reference to a symbol defined by a dynamic object which
5556 is not a function. */
5557
5558 /* If we are creating a shared library, we must presume that the
5559 only references to the symbol are via the global offset table.
5560 For such cases we need not do anything here; the relocations will
5561 be handled correctly by relocate_section. */
5562 if (info->shared)
5563 return TRUE;
5564
5565 /* If there are no references to this symbol that do not use the
5566 GOT, we don't need to generate a copy reloc. */
5567 if (!h->non_got_ref)
5568 return TRUE;
5569
5570 /* If we didn't find any dynamic relocs in read-only sections, then
5571 we'll be keeping the dynamic relocs and avoiding the copy reloc.
5572 We can't do this if there are any small data relocations. This
5573 doesn't work on VxWorks, where we can not have dynamic
5574 relocations (other than copy and jump slot relocations) in an
5575 executable. */
5576 if (ELIMINATE_COPY_RELOCS
5577 && !ppc_elf_hash_entry (h)->has_sda_refs
5578 && !htab->is_vxworks
5579 && !h->def_regular
5580 && !readonly_dynrelocs (h))
5581 {
5582 h->non_got_ref = 0;
5583 return TRUE;
5584 }
5585
5586 /* We must allocate the symbol in our .dynbss section, which will
5587 become part of the .bss section of the executable. There will be
5588 an entry for this symbol in the .dynsym section. The dynamic
5589 object will contain position independent code, so all references
5590 from the dynamic object to this symbol will go through the global
5591 offset table. The dynamic linker will use the .dynsym entry to
5592 determine the address it must put in the global offset table, so
5593 both the dynamic object and the regular object will refer to the
5594 same memory location for the variable.
5595
5596 Of course, if the symbol is referenced using SDAREL relocs, we
5597 must instead allocate it in .sbss. */
5598
5599 if (ppc_elf_hash_entry (h)->has_sda_refs)
5600 s = htab->dynsbss;
5601 else
5602 s = htab->dynbss;
5603 BFD_ASSERT (s != NULL);
5604
5605 /* We must generate a R_PPC_COPY reloc to tell the dynamic linker to
5606 copy the initial value out of the dynamic object and into the
5607 runtime process image. We need to remember the offset into the
5608 .rela.bss section we are going to use. */
5609 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
5610 {
5611 asection *srel;
5612
5613 if (ppc_elf_hash_entry (h)->has_sda_refs)
5614 srel = htab->relsbss;
5615 else
5616 srel = htab->relbss;
5617 BFD_ASSERT (srel != NULL);
5618 srel->size += sizeof (Elf32_External_Rela);
5619 h->needs_copy = 1;
5620 }
5621
5622 return _bfd_elf_adjust_dynamic_copy (h, s);
5623 }
5624 \f
5625 /* Generate a symbol to mark plt call stubs. For non-PIC code the sym is
5626 xxxxxxxx.plt_call32.<callee> where xxxxxxxx is a hex number, usually 0,
5627 specifying the addend on the plt relocation. For -fpic code, the sym
5628 is xxxxxxxx.plt_pic32.<callee>, and for -fPIC
5629 xxxxxxxx.got2.plt_pic32.<callee>. */
5630
5631 static bfd_boolean
5632 add_stub_sym (struct plt_entry *ent,
5633 struct elf_link_hash_entry *h,
5634 struct bfd_link_info *info)
5635 {
5636 struct elf_link_hash_entry *sh;
5637 size_t len1, len2, len3;
5638 char *name;
5639 const char *stub;
5640 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
5641
5642 if (info->shared)
5643 stub = ".plt_pic32.";
5644 else
5645 stub = ".plt_call32.";
5646
5647 len1 = strlen (h->root.root.string);
5648 len2 = strlen (stub);
5649 len3 = 0;
5650 if (ent->sec)
5651 len3 = strlen (ent->sec->name);
5652 name = bfd_malloc (len1 + len2 + len3 + 9);
5653 if (name == NULL)
5654 return FALSE;
5655 sprintf (name, "%08x", (unsigned) ent->addend & 0xffffffff);
5656 if (ent->sec)
5657 memcpy (name + 8, ent->sec->name, len3);
5658 memcpy (name + 8 + len3, stub, len2);
5659 memcpy (name + 8 + len3 + len2, h->root.root.string, len1 + 1);
5660 sh = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
5661 if (sh == NULL)
5662 return FALSE;
5663 if (sh->root.type == bfd_link_hash_new)
5664 {
5665 sh->root.type = bfd_link_hash_defined;
5666 sh->root.u.def.section = htab->glink;
5667 sh->root.u.def.value = ent->glink_offset;
5668 sh->ref_regular = 1;
5669 sh->def_regular = 1;
5670 sh->ref_regular_nonweak = 1;
5671 sh->forced_local = 1;
5672 sh->non_elf = 0;
5673 }
5674 return TRUE;
5675 }
5676
5677 /* Allocate NEED contiguous space in .got, and return the offset.
5678 Handles allocation of the got header when crossing 32k. */
5679
5680 static bfd_vma
5681 allocate_got (struct ppc_elf_link_hash_table *htab, unsigned int need)
5682 {
5683 bfd_vma where;
5684 unsigned int max_before_header;
5685
5686 if (htab->plt_type == PLT_VXWORKS)
5687 {
5688 where = htab->got->size;
5689 htab->got->size += need;
5690 }
5691 else
5692 {
5693 max_before_header = htab->plt_type == PLT_NEW ? 32768 : 32764;
5694 if (need <= htab->got_gap)
5695 {
5696 where = max_before_header - htab->got_gap;
5697 htab->got_gap -= need;
5698 }
5699 else
5700 {
5701 if (htab->got->size + need > max_before_header
5702 && htab->got->size <= max_before_header)
5703 {
5704 htab->got_gap = max_before_header - htab->got->size;
5705 htab->got->size = max_before_header + htab->got_header_size;
5706 }
5707 where = htab->got->size;
5708 htab->got->size += need;
5709 }
5710 }
5711 return where;
5712 }
5713
5714 /* Allocate space in associated reloc sections for dynamic relocs. */
5715
5716 static bfd_boolean
5717 allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
5718 {
5719 struct bfd_link_info *info = inf;
5720 struct ppc_elf_link_hash_entry *eh;
5721 struct ppc_elf_link_hash_table *htab;
5722 struct elf_dyn_relocs *p;
5723
5724 if (h->root.type == bfd_link_hash_indirect)
5725 return TRUE;
5726
5727 htab = ppc_elf_hash_table (info);
5728 if (htab->elf.dynamic_sections_created
5729 || h->type == STT_GNU_IFUNC)
5730 {
5731 struct plt_entry *ent;
5732 bfd_boolean doneone = FALSE;
5733 bfd_vma plt_offset = 0, glink_offset = 0;
5734 bfd_boolean dyn;
5735
5736 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
5737 if (ent->plt.refcount > 0)
5738 {
5739 /* Make sure this symbol is output as a dynamic symbol. */
5740 if (h->dynindx == -1
5741 && !h->forced_local
5742 && !h->def_regular
5743 && htab->elf.dynamic_sections_created)
5744 {
5745 if (! bfd_elf_link_record_dynamic_symbol (info, h))
5746 return FALSE;
5747 }
5748
5749 dyn = htab->elf.dynamic_sections_created;
5750 if (info->shared
5751 || h->type == STT_GNU_IFUNC
5752 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))
5753 {
5754 asection *s = htab->plt;
5755 if (!dyn || h->dynindx == -1)
5756 s = htab->iplt;
5757
5758 if (htab->plt_type == PLT_NEW || !dyn || h->dynindx == -1)
5759 {
5760 if (!doneone)
5761 {
5762 plt_offset = s->size;
5763 s->size += 4;
5764 }
5765 ent->plt.offset = plt_offset;
5766
5767 s = htab->glink;
5768 if (!doneone || info->shared)
5769 {
5770 glink_offset = s->size;
5771 s->size += GLINK_ENTRY_SIZE;
5772 if (h == htab->tls_get_addr
5773 && !htab->no_tls_get_addr_opt)
5774 s->size += TLS_GET_ADDR_GLINK_SIZE - GLINK_ENTRY_SIZE;
5775 }
5776 if (!doneone
5777 && !info->shared
5778 && h->def_dynamic
5779 && !h->def_regular)
5780 {
5781 h->root.u.def.section = s;
5782 h->root.u.def.value = glink_offset;
5783 }
5784 ent->glink_offset = glink_offset;
5785
5786 if (htab->emit_stub_syms
5787 && !add_stub_sym (ent, h, info))
5788 return FALSE;
5789 }
5790 else
5791 {
5792 if (!doneone)
5793 {
5794 /* If this is the first .plt entry, make room
5795 for the special first entry. */
5796 if (s->size == 0)
5797 s->size += htab->plt_initial_entry_size;
5798
5799 /* The PowerPC PLT is actually composed of two
5800 parts, the first part is 2 words (for a load
5801 and a jump), and then there is a remaining
5802 word available at the end. */
5803 plt_offset = (htab->plt_initial_entry_size
5804 + (htab->plt_slot_size
5805 * ((s->size
5806 - htab->plt_initial_entry_size)
5807 / htab->plt_entry_size)));
5808
5809 /* If this symbol is not defined in a regular
5810 file, and we are not generating a shared
5811 library, then set the symbol to this location
5812 in the .plt. This is to avoid text
5813 relocations, and is required to make
5814 function pointers compare as equal between
5815 the normal executable and the shared library. */
5816 if (! info->shared
5817 && h->def_dynamic
5818 && !h->def_regular)
5819 {
5820 h->root.u.def.section = s;
5821 h->root.u.def.value = plt_offset;
5822 }
5823
5824 /* Make room for this entry. */
5825 s->size += htab->plt_entry_size;
5826 /* After the 8192nd entry, room for two entries
5827 is allocated. */
5828 if (htab->plt_type == PLT_OLD
5829 && (s->size - htab->plt_initial_entry_size)
5830 / htab->plt_entry_size
5831 > PLT_NUM_SINGLE_ENTRIES)
5832 s->size += htab->plt_entry_size;
5833 }
5834 ent->plt.offset = plt_offset;
5835 }
5836
5837 /* We also need to make an entry in the .rela.plt section. */
5838 if (!doneone)
5839 {
5840 if (!htab->elf.dynamic_sections_created
5841 || h->dynindx == -1)
5842 htab->reliplt->size += sizeof (Elf32_External_Rela);
5843 else
5844 {
5845 htab->relplt->size += sizeof (Elf32_External_Rela);
5846
5847 if (htab->plt_type == PLT_VXWORKS)
5848 {
5849 /* Allocate space for the unloaded relocations. */
5850 if (!info->shared
5851 && htab->elf.dynamic_sections_created)
5852 {
5853 if (ent->plt.offset
5854 == (bfd_vma) htab->plt_initial_entry_size)
5855 {
5856 htab->srelplt2->size
5857 += (sizeof (Elf32_External_Rela)
5858 * VXWORKS_PLTRESOLVE_RELOCS);
5859 }
5860
5861 htab->srelplt2->size
5862 += (sizeof (Elf32_External_Rela)
5863 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS);
5864 }
5865
5866 /* Every PLT entry has an associated GOT entry in
5867 .got.plt. */
5868 htab->sgotplt->size += 4;
5869 }
5870 }
5871 doneone = TRUE;
5872 }
5873 }
5874 else
5875 ent->plt.offset = (bfd_vma) -1;
5876 }
5877 else
5878 ent->plt.offset = (bfd_vma) -1;
5879
5880 if (!doneone)
5881 {
5882 h->plt.plist = NULL;
5883 h->needs_plt = 0;
5884 }
5885 }
5886 else
5887 {
5888 h->plt.plist = NULL;
5889 h->needs_plt = 0;
5890 }
5891
5892 eh = (struct ppc_elf_link_hash_entry *) h;
5893 if (eh->elf.got.refcount > 0)
5894 {
5895 bfd_boolean dyn;
5896 unsigned int need;
5897
5898 /* Make sure this symbol is output as a dynamic symbol. */
5899 if (eh->elf.dynindx == -1
5900 && !eh->elf.forced_local
5901 && eh->elf.type != STT_GNU_IFUNC
5902 && htab->elf.dynamic_sections_created)
5903 {
5904 if (!bfd_elf_link_record_dynamic_symbol (info, &eh->elf))
5905 return FALSE;
5906 }
5907
5908 need = 0;
5909 if ((eh->tls_mask & TLS_TLS) != 0)
5910 {
5911 if ((eh->tls_mask & TLS_LD) != 0)
5912 {
5913 if (!eh->elf.def_dynamic)
5914 /* We'll just use htab->tlsld_got.offset. This should
5915 always be the case. It's a little odd if we have
5916 a local dynamic reloc against a non-local symbol. */
5917 htab->tlsld_got.refcount += 1;
5918 else
5919 need += 8;
5920 }
5921 if ((eh->tls_mask & TLS_GD) != 0)
5922 need += 8;
5923 if ((eh->tls_mask & (TLS_TPREL | TLS_TPRELGD)) != 0)
5924 need += 4;
5925 if ((eh->tls_mask & TLS_DTPREL) != 0)
5926 need += 4;
5927 }
5928 else
5929 need += 4;
5930 if (need == 0)
5931 eh->elf.got.offset = (bfd_vma) -1;
5932 else
5933 {
5934 eh->elf.got.offset = allocate_got (htab, need);
5935 dyn = htab->elf.dynamic_sections_created;
5936 if ((info->shared
5937 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, &eh->elf))
5938 && (ELF_ST_VISIBILITY (eh->elf.other) == STV_DEFAULT
5939 || eh->elf.root.type != bfd_link_hash_undefweak))
5940 {
5941 asection *rsec = htab->relgot;
5942
5943 if (eh->elf.type == STT_GNU_IFUNC)
5944 rsec = htab->reliplt;
5945 /* All the entries we allocated need relocs.
5946 Except LD only needs one. */
5947 if ((eh->tls_mask & TLS_LD) != 0
5948 && eh->elf.def_dynamic)
5949 need -= 4;
5950 rsec->size += need * (sizeof (Elf32_External_Rela) / 4);
5951 }
5952 }
5953 }
5954 else
5955 eh->elf.got.offset = (bfd_vma) -1;
5956
5957 if (eh->dyn_relocs == NULL
5958 || !htab->elf.dynamic_sections_created)
5959 return TRUE;
5960
5961 /* In the shared -Bsymbolic case, discard space allocated for
5962 dynamic pc-relative relocs against symbols which turn out to be
5963 defined in regular objects. For the normal shared case, discard
5964 space for relocs that have become local due to symbol visibility
5965 changes. */
5966
5967 if (info->shared)
5968 {
5969 /* Relocs that use pc_count are those that appear on a call insn,
5970 or certain REL relocs (see must_be_dyn_reloc) that can be
5971 generated via assembly. We want calls to protected symbols to
5972 resolve directly to the function rather than going via the plt.
5973 If people want function pointer comparisons to work as expected
5974 then they should avoid writing weird assembly. */
5975 if (SYMBOL_CALLS_LOCAL (info, h))
5976 {
5977 struct elf_dyn_relocs **pp;
5978
5979 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
5980 {
5981 p->count -= p->pc_count;
5982 p->pc_count = 0;
5983 if (p->count == 0)
5984 *pp = p->next;
5985 else
5986 pp = &p->next;
5987 }
5988 }
5989
5990 if (htab->is_vxworks)
5991 {
5992 struct elf_dyn_relocs **pp;
5993
5994 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
5995 {
5996 if (strcmp (p->sec->output_section->name, ".tls_vars") == 0)
5997 *pp = p->next;
5998 else
5999 pp = &p->next;
6000 }
6001 }
6002
6003 /* Discard relocs on undefined symbols that must be local. */
6004 if (eh->dyn_relocs != NULL
6005 && h->root.type == bfd_link_hash_undefined
6006 && (ELF_ST_VISIBILITY (h->other) == STV_HIDDEN
6007 || ELF_ST_VISIBILITY (h->other) == STV_INTERNAL))
6008 eh->dyn_relocs = NULL;
6009
6010 /* Also discard relocs on undefined weak syms with non-default
6011 visibility. */
6012 if (eh->dyn_relocs != NULL
6013 && h->root.type == bfd_link_hash_undefweak)
6014 {
6015 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
6016 eh->dyn_relocs = NULL;
6017
6018 /* Make sure undefined weak symbols are output as a dynamic
6019 symbol in PIEs. */
6020 else if (h->dynindx == -1
6021 && !h->forced_local
6022 && !h->def_regular)
6023 {
6024 if (! bfd_elf_link_record_dynamic_symbol (info, h))
6025 return FALSE;
6026 }
6027 }
6028 }
6029 else if (ELIMINATE_COPY_RELOCS)
6030 {
6031 /* For the non-shared case, discard space for relocs against
6032 symbols which turn out to need copy relocs or are not
6033 dynamic. */
6034
6035 if (!h->non_got_ref
6036 && !h->def_regular)
6037 {
6038 /* Make sure this symbol is output as a dynamic symbol.
6039 Undefined weak syms won't yet be marked as dynamic. */
6040 if (h->dynindx == -1
6041 && !h->forced_local)
6042 {
6043 if (! bfd_elf_link_record_dynamic_symbol (info, h))
6044 return FALSE;
6045 }
6046
6047 /* If that succeeded, we know we'll be keeping all the
6048 relocs. */
6049 if (h->dynindx != -1)
6050 goto keep;
6051 }
6052
6053 eh->dyn_relocs = NULL;
6054
6055 keep: ;
6056 }
6057
6058 /* Finally, allocate space. */
6059 for (p = eh->dyn_relocs; p != NULL; p = p->next)
6060 {
6061 asection *sreloc = elf_section_data (p->sec)->sreloc;
6062 if (eh->elf.type == STT_GNU_IFUNC)
6063 sreloc = htab->reliplt;
6064 sreloc->size += p->count * sizeof (Elf32_External_Rela);
6065 }
6066
6067 return TRUE;
6068 }
6069
6070 /* Set DF_TEXTREL if we find any dynamic relocs that apply to
6071 read-only sections. */
6072
6073 static bfd_boolean
6074 maybe_set_textrel (struct elf_link_hash_entry *h, void *info)
6075 {
6076 if (h->root.type == bfd_link_hash_indirect)
6077 return TRUE;
6078
6079 if (readonly_dynrelocs (h))
6080 {
6081 ((struct bfd_link_info *) info)->flags |= DF_TEXTREL;
6082
6083 /* Not an error, just cut short the traversal. */
6084 return FALSE;
6085 }
6086 return TRUE;
6087 }
6088
6089 static const unsigned char glink_eh_frame_cie[] =
6090 {
6091 0, 0, 0, 16, /* length. */
6092 0, 0, 0, 0, /* id. */
6093 1, /* CIE version. */
6094 'z', 'R', 0, /* Augmentation string. */
6095 4, /* Code alignment. */
6096 0x7c, /* Data alignment. */
6097 65, /* RA reg. */
6098 1, /* Augmentation size. */
6099 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding. */
6100 DW_CFA_def_cfa, 1, 0 /* def_cfa: r1 offset 0. */
6101 };
6102
6103 /* Set the sizes of the dynamic sections. */
6104
6105 static bfd_boolean
6106 ppc_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
6107 struct bfd_link_info *info)
6108 {
6109 struct ppc_elf_link_hash_table *htab;
6110 asection *s;
6111 bfd_boolean relocs;
6112 bfd *ibfd;
6113
6114 #ifdef DEBUG
6115 fprintf (stderr, "ppc_elf_size_dynamic_sections called\n");
6116 #endif
6117
6118 htab = ppc_elf_hash_table (info);
6119 BFD_ASSERT (htab->elf.dynobj != NULL);
6120
6121 if (elf_hash_table (info)->dynamic_sections_created)
6122 {
6123 /* Set the contents of the .interp section to the interpreter. */
6124 if (info->executable)
6125 {
6126 s = bfd_get_linker_section (htab->elf.dynobj, ".interp");
6127 BFD_ASSERT (s != NULL);
6128 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
6129 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
6130 }
6131 }
6132
6133 if (htab->plt_type == PLT_OLD)
6134 htab->got_header_size = 16;
6135 else if (htab->plt_type == PLT_NEW)
6136 htab->got_header_size = 12;
6137
6138 /* Set up .got offsets for local syms, and space for local dynamic
6139 relocs. */
6140 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
6141 {
6142 bfd_signed_vma *local_got;
6143 bfd_signed_vma *end_local_got;
6144 struct plt_entry **local_plt;
6145 struct plt_entry **end_local_plt;
6146 char *lgot_masks;
6147 bfd_size_type locsymcount;
6148 Elf_Internal_Shdr *symtab_hdr;
6149
6150 if (!is_ppc_elf (ibfd))
6151 continue;
6152
6153 for (s = ibfd->sections; s != NULL; s = s->next)
6154 {
6155 struct ppc_dyn_relocs *p;
6156
6157 for (p = ((struct ppc_dyn_relocs *)
6158 elf_section_data (s)->local_dynrel);
6159 p != NULL;
6160 p = p->next)
6161 {
6162 if (!bfd_is_abs_section (p->sec)
6163 && bfd_is_abs_section (p->sec->output_section))
6164 {
6165 /* Input section has been discarded, either because
6166 it is a copy of a linkonce section or due to
6167 linker script /DISCARD/, so we'll be discarding
6168 the relocs too. */
6169 }
6170 else if (htab->is_vxworks
6171 && strcmp (p->sec->output_section->name,
6172 ".tls_vars") == 0)
6173 {
6174 /* Relocations in vxworks .tls_vars sections are
6175 handled specially by the loader. */
6176 }
6177 else if (p->count != 0)
6178 {
6179 asection *sreloc = elf_section_data (p->sec)->sreloc;
6180 if (p->ifunc)
6181 sreloc = htab->reliplt;
6182 sreloc->size += p->count * sizeof (Elf32_External_Rela);
6183 if ((p->sec->output_section->flags
6184 & (SEC_READONLY | SEC_ALLOC))
6185 == (SEC_READONLY | SEC_ALLOC))
6186 info->flags |= DF_TEXTREL;
6187 }
6188 }
6189 }
6190
6191 local_got = elf_local_got_refcounts (ibfd);
6192 if (!local_got)
6193 continue;
6194
6195 symtab_hdr = &elf_symtab_hdr (ibfd);
6196 locsymcount = symtab_hdr->sh_info;
6197 end_local_got = local_got + locsymcount;
6198 local_plt = (struct plt_entry **) end_local_got;
6199 end_local_plt = local_plt + locsymcount;
6200 lgot_masks = (char *) end_local_plt;
6201
6202 for (; local_got < end_local_got; ++local_got, ++lgot_masks)
6203 if (*local_got > 0)
6204 {
6205 unsigned int need = 0;
6206 if ((*lgot_masks & TLS_TLS) != 0)
6207 {
6208 if ((*lgot_masks & TLS_GD) != 0)
6209 need += 8;
6210 if ((*lgot_masks & TLS_LD) != 0)
6211 htab->tlsld_got.refcount += 1;
6212 if ((*lgot_masks & (TLS_TPREL | TLS_TPRELGD)) != 0)
6213 need += 4;
6214 if ((*lgot_masks & TLS_DTPREL) != 0)
6215 need += 4;
6216 }
6217 else
6218 need += 4;
6219 if (need == 0)
6220 *local_got = (bfd_vma) -1;
6221 else
6222 {
6223 *local_got = allocate_got (htab, need);
6224 if (info->shared)
6225 {
6226 asection *srel = htab->relgot;
6227 if ((*lgot_masks & PLT_IFUNC) != 0)
6228 srel = htab->reliplt;
6229 srel->size += need * (sizeof (Elf32_External_Rela) / 4);
6230 }
6231 }
6232 }
6233 else
6234 *local_got = (bfd_vma) -1;
6235
6236 if (htab->is_vxworks)
6237 continue;
6238
6239 /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */
6240 for (; local_plt < end_local_plt; ++local_plt)
6241 {
6242 struct plt_entry *ent;
6243 bfd_boolean doneone = FALSE;
6244 bfd_vma plt_offset = 0, glink_offset = 0;
6245
6246 for (ent = *local_plt; ent != NULL; ent = ent->next)
6247 if (ent->plt.refcount > 0)
6248 {
6249 s = htab->iplt;
6250
6251 if (!doneone)
6252 {
6253 plt_offset = s->size;
6254 s->size += 4;
6255 }
6256 ent->plt.offset = plt_offset;
6257
6258 s = htab->glink;
6259 if (!doneone || info->shared)
6260 {
6261 glink_offset = s->size;
6262 s->size += GLINK_ENTRY_SIZE;
6263 }
6264 ent->glink_offset = glink_offset;
6265
6266 if (!doneone)
6267 {
6268 htab->reliplt->size += sizeof (Elf32_External_Rela);
6269 doneone = TRUE;
6270 }
6271 }
6272 else
6273 ent->plt.offset = (bfd_vma) -1;
6274 }
6275 }
6276
6277 /* Allocate space for global sym dynamic relocs. */
6278 elf_link_hash_traverse (elf_hash_table (info), allocate_dynrelocs, info);
6279
6280 if (htab->tlsld_got.refcount > 0)
6281 {
6282 htab->tlsld_got.offset = allocate_got (htab, 8);
6283 if (info->shared)
6284 htab->relgot->size += sizeof (Elf32_External_Rela);
6285 }
6286 else
6287 htab->tlsld_got.offset = (bfd_vma) -1;
6288
6289 if (htab->got != NULL && htab->plt_type != PLT_VXWORKS)
6290 {
6291 unsigned int g_o_t = 32768;
6292
6293 /* If we haven't allocated the header, do so now. When we get here,
6294 for old plt/got the got size will be 0 to 32764 (not allocated),
6295 or 32780 to 65536 (header allocated). For new plt/got, the
6296 corresponding ranges are 0 to 32768 and 32780 to 65536. */
6297 if (htab->got->size <= 32768)
6298 {
6299 g_o_t = htab->got->size;
6300 if (htab->plt_type == PLT_OLD)
6301 g_o_t += 4;
6302 htab->got->size += htab->got_header_size;
6303 }
6304
6305 htab->elf.hgot->root.u.def.value = g_o_t;
6306 }
6307 if (info->shared)
6308 {
6309 struct elf_link_hash_entry *sda = htab->sdata[0].sym;
6310 if (sda != NULL
6311 && !(sda->root.type == bfd_link_hash_defined
6312 || sda->root.type == bfd_link_hash_defweak))
6313 {
6314 sda->root.type = bfd_link_hash_defined;
6315 sda->root.u.def.section = htab->elf.hgot->root.u.def.section;
6316 sda->root.u.def.value = htab->elf.hgot->root.u.def.value;
6317 }
6318 }
6319
6320 if (htab->glink != NULL
6321 && htab->glink->size != 0
6322 && htab->elf.dynamic_sections_created)
6323 {
6324 htab->glink_pltresolve = htab->glink->size;
6325 /* Space for the branch table. */
6326 htab->glink->size += htab->glink->size / (GLINK_ENTRY_SIZE / 4) - 4;
6327 /* Pad out to align the start of PLTresolve. */
6328 htab->glink->size += -htab->glink->size & 15;
6329 htab->glink->size += GLINK_PLTRESOLVE;
6330
6331 if (htab->emit_stub_syms)
6332 {
6333 struct elf_link_hash_entry *sh;
6334 sh = elf_link_hash_lookup (&htab->elf, "__glink",
6335 TRUE, FALSE, FALSE);
6336 if (sh == NULL)
6337 return FALSE;
6338 if (sh->root.type == bfd_link_hash_new)
6339 {
6340 sh->root.type = bfd_link_hash_defined;
6341 sh->root.u.def.section = htab->glink;
6342 sh->root.u.def.value = htab->glink_pltresolve;
6343 sh->ref_regular = 1;
6344 sh->def_regular = 1;
6345 sh->ref_regular_nonweak = 1;
6346 sh->forced_local = 1;
6347 sh->non_elf = 0;
6348 }
6349 sh = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve",
6350 TRUE, FALSE, FALSE);
6351 if (sh == NULL)
6352 return FALSE;
6353 if (sh->root.type == bfd_link_hash_new)
6354 {
6355 sh->root.type = bfd_link_hash_defined;
6356 sh->root.u.def.section = htab->glink;
6357 sh->root.u.def.value = htab->glink->size - GLINK_PLTRESOLVE;
6358 sh->ref_regular = 1;
6359 sh->def_regular = 1;
6360 sh->ref_regular_nonweak = 1;
6361 sh->forced_local = 1;
6362 sh->non_elf = 0;
6363 }
6364 }
6365 }
6366
6367 if (htab->glink != NULL
6368 && htab->glink->size != 0
6369 && htab->glink_eh_frame != NULL
6370 && !bfd_is_abs_section (htab->glink_eh_frame->output_section)
6371 && _bfd_elf_eh_frame_present (info))
6372 {
6373 s = htab->glink_eh_frame;
6374 s->size = sizeof (glink_eh_frame_cie) + 20;
6375 if (info->shared)
6376 {
6377 s->size += 4;
6378 if (htab->glink->size - GLINK_PLTRESOLVE + 8 >= 256)
6379 s->size += 4;
6380 }
6381 }
6382
6383 /* We've now determined the sizes of the various dynamic sections.
6384 Allocate memory for them. */
6385 relocs = FALSE;
6386 for (s = htab->elf.dynobj->sections; s != NULL; s = s->next)
6387 {
6388 bfd_boolean strip_section = TRUE;
6389
6390 if ((s->flags & SEC_LINKER_CREATED) == 0)
6391 continue;
6392
6393 if (s == htab->plt
6394 || s == htab->got)
6395 {
6396 /* We'd like to strip these sections if they aren't needed, but if
6397 we've exported dynamic symbols from them we must leave them.
6398 It's too late to tell BFD to get rid of the symbols. */
6399 if (htab->elf.hplt != NULL)
6400 strip_section = FALSE;
6401 /* Strip this section if we don't need it; see the
6402 comment below. */
6403 }
6404 else if (s == htab->iplt
6405 || s == htab->glink
6406 || s == htab->glink_eh_frame
6407 || s == htab->sgotplt
6408 || s == htab->sbss
6409 || s == htab->dynbss
6410 || s == htab->dynsbss
6411 || s == htab->sdata[0].section
6412 || s == htab->sdata[1].section)
6413 {
6414 /* Strip these too. */
6415 }
6416 else if (CONST_STRNEQ (bfd_get_section_name (htab->elf.dynobj, s),
6417 ".rela"))
6418 {
6419 if (s->size != 0)
6420 {
6421 /* Remember whether there are any relocation sections. */
6422 relocs = TRUE;
6423
6424 /* We use the reloc_count field as a counter if we need
6425 to copy relocs into the output file. */
6426 s->reloc_count = 0;
6427 }
6428 }
6429 else
6430 {
6431 /* It's not one of our sections, so don't allocate space. */
6432 continue;
6433 }
6434
6435 if (s->size == 0 && strip_section)
6436 {
6437 /* If we don't need this section, strip it from the
6438 output file. This is mostly to handle .rela.bss and
6439 .rela.plt. We must create both sections in
6440 create_dynamic_sections, because they must be created
6441 before the linker maps input sections to output
6442 sections. The linker does that before
6443 adjust_dynamic_symbol is called, and it is that
6444 function which decides whether anything needs to go
6445 into these sections. */
6446 s->flags |= SEC_EXCLUDE;
6447 continue;
6448 }
6449
6450 if ((s->flags & SEC_HAS_CONTENTS) == 0)
6451 continue;
6452
6453 /* Allocate memory for the section contents. */
6454 s->contents = bfd_zalloc (htab->elf.dynobj, s->size);
6455 if (s->contents == NULL)
6456 return FALSE;
6457 }
6458
6459 if (htab->elf.dynamic_sections_created)
6460 {
6461 /* Add some entries to the .dynamic section. We fill in the
6462 values later, in ppc_elf_finish_dynamic_sections, but we
6463 must add the entries now so that we get the correct size for
6464 the .dynamic section. The DT_DEBUG entry is filled in by the
6465 dynamic linker and used by the debugger. */
6466 #define add_dynamic_entry(TAG, VAL) \
6467 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
6468
6469 if (info->executable)
6470 {
6471 if (!add_dynamic_entry (DT_DEBUG, 0))
6472 return FALSE;
6473 }
6474
6475 if (htab->plt != NULL && htab->plt->size != 0)
6476 {
6477 if (!add_dynamic_entry (DT_PLTGOT, 0)
6478 || !add_dynamic_entry (DT_PLTRELSZ, 0)
6479 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
6480 || !add_dynamic_entry (DT_JMPREL, 0))
6481 return FALSE;
6482 }
6483
6484 if (htab->glink != NULL && htab->glink->size != 0)
6485 {
6486 if (!add_dynamic_entry (DT_PPC_GOT, 0))
6487 return FALSE;
6488 if (!htab->no_tls_get_addr_opt
6489 && htab->tls_get_addr != NULL
6490 && htab->tls_get_addr->plt.plist != NULL
6491 && !add_dynamic_entry (DT_PPC_OPT, PPC_OPT_TLS))
6492 return FALSE;
6493 }
6494
6495 if (relocs)
6496 {
6497 if (!add_dynamic_entry (DT_RELA, 0)
6498 || !add_dynamic_entry (DT_RELASZ, 0)
6499 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
6500 return FALSE;
6501 }
6502
6503 /* If any dynamic relocs apply to a read-only section, then we
6504 need a DT_TEXTREL entry. */
6505 if ((info->flags & DF_TEXTREL) == 0)
6506 elf_link_hash_traverse (elf_hash_table (info), maybe_set_textrel,
6507 info);
6508
6509 if ((info->flags & DF_TEXTREL) != 0)
6510 {
6511 if (!add_dynamic_entry (DT_TEXTREL, 0))
6512 return FALSE;
6513 }
6514 if (htab->is_vxworks
6515 && !elf_vxworks_add_dynamic_entries (output_bfd, info))
6516 return FALSE;
6517 }
6518 #undef add_dynamic_entry
6519
6520 if (htab->glink_eh_frame != NULL
6521 && htab->glink_eh_frame->contents != NULL)
6522 {
6523 unsigned char *p = htab->glink_eh_frame->contents;
6524 bfd_vma val;
6525
6526 memcpy (p, glink_eh_frame_cie, sizeof (glink_eh_frame_cie));
6527 /* CIE length (rewrite in case little-endian). */
6528 bfd_put_32 (htab->elf.dynobj, sizeof (glink_eh_frame_cie) - 4, p);
6529 p += sizeof (glink_eh_frame_cie);
6530 /* FDE length. */
6531 val = htab->glink_eh_frame->size - 4 - sizeof (glink_eh_frame_cie);
6532 bfd_put_32 (htab->elf.dynobj, val, p);
6533 p += 4;
6534 /* CIE pointer. */
6535 val = p - htab->glink_eh_frame->contents;
6536 bfd_put_32 (htab->elf.dynobj, val, p);
6537 p += 4;
6538 /* Offset to .glink. Set later. */
6539 p += 4;
6540 /* .glink size. */
6541 bfd_put_32 (htab->elf.dynobj, htab->glink->size, p);
6542 p += 4;
6543 /* Augmentation. */
6544 p += 1;
6545
6546 if (info->shared
6547 && htab->elf.dynamic_sections_created)
6548 {
6549 bfd_vma adv = (htab->glink->size - GLINK_PLTRESOLVE + 8) >> 2;
6550 if (adv < 64)
6551 *p++ = DW_CFA_advance_loc + adv;
6552 else if (adv < 256)
6553 {
6554 *p++ = DW_CFA_advance_loc1;
6555 *p++ = adv;
6556 }
6557 else if (adv < 65536)
6558 {
6559 *p++ = DW_CFA_advance_loc2;
6560 bfd_put_16 (htab->elf.dynobj, adv, p);
6561 p += 2;
6562 }
6563 else
6564 {
6565 *p++ = DW_CFA_advance_loc4;
6566 bfd_put_32 (htab->elf.dynobj, adv, p);
6567 p += 4;
6568 }
6569 *p++ = DW_CFA_register;
6570 *p++ = 65;
6571 p++;
6572 *p++ = DW_CFA_advance_loc + 4;
6573 *p++ = DW_CFA_restore_extended;
6574 *p++ = 65;
6575 }
6576 BFD_ASSERT ((bfd_vma) ((p + 3 - htab->glink_eh_frame->contents) & -4)
6577 == htab->glink_eh_frame->size);
6578 }
6579
6580 return TRUE;
6581 }
6582
6583 /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
6584
6585 static bfd_boolean
6586 ppc_elf_hash_symbol (struct elf_link_hash_entry *h)
6587 {
6588 if (h->plt.plist != NULL
6589 && !h->def_regular
6590 && (!h->pointer_equality_needed
6591 || !h->ref_regular_nonweak))
6592 return FALSE;
6593
6594 return _bfd_elf_hash_symbol (h);
6595 }
6596 \f
6597 #define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0]))
6598
6599 /* Relaxation trampolines. r12 is available for clobbering (r11, is
6600 used for some functions that are allowed to break the ABI). */
6601 static const int shared_stub_entry[] =
6602 {
6603 0x7c0802a6, /* mflr 0 */
6604 0x429f0005, /* bcl 20, 31, .Lxxx */
6605 0x7d8802a6, /* mflr 12 */
6606 0x3d8c0000, /* addis 12, 12, (xxx-.Lxxx)@ha */
6607 0x398c0008, /* addi 12, 12, (xxx-.Lxxx)@l */
6608 0x7c0803a6, /* mtlr 0 */
6609 0x7d8903a6, /* mtctr 12 */
6610 0x4e800420, /* bctr */
6611 };
6612
6613 static const int stub_entry[] =
6614 {
6615 0x3d800000, /* lis 12,xxx@ha */
6616 0x398c0000, /* addi 12,12,xxx@l */
6617 0x7d8903a6, /* mtctr 12 */
6618 0x4e800420, /* bctr */
6619 };
6620
6621 static bfd_boolean
6622 ppc_elf_relax_section (bfd *abfd,
6623 asection *isec,
6624 struct bfd_link_info *link_info,
6625 bfd_boolean *again)
6626 {
6627 struct one_fixup
6628 {
6629 struct one_fixup *next;
6630 asection *tsec;
6631 /* Final link, can use the symbol offset. For a
6632 relocatable link we use the symbol's index. */
6633 bfd_vma toff;
6634 bfd_vma trampoff;
6635 };
6636
6637 Elf_Internal_Shdr *symtab_hdr;
6638 bfd_byte *contents = NULL;
6639 Elf_Internal_Sym *isymbuf = NULL;
6640 Elf_Internal_Rela *internal_relocs = NULL;
6641 Elf_Internal_Rela *irel, *irelend;
6642 struct one_fixup *fixups = NULL;
6643 unsigned changes = 0;
6644 struct ppc_elf_link_hash_table *htab;
6645 bfd_size_type trampoff;
6646 asection *got2;
6647 bfd_boolean maybe_pasted;
6648
6649 *again = FALSE;
6650
6651 /* Nothing to do if there are no relocations, and no need to do
6652 anything with non-alloc or non-code sections. */
6653 if ((isec->flags & SEC_ALLOC) == 0
6654 || (isec->flags & SEC_CODE) == 0
6655 || (isec->flags & SEC_RELOC) == 0
6656 || isec->reloc_count == 0)
6657 return TRUE;
6658
6659 /* We cannot represent the required PIC relocs in the output, so don't
6660 do anything. The linker doesn't support mixing -shared and -r
6661 anyway. */
6662 if (link_info->relocatable && link_info->shared)
6663 return TRUE;
6664
6665 trampoff = (isec->size + 3) & (bfd_vma) -4;
6666 maybe_pasted = (strcmp (isec->output_section->name, ".init") == 0
6667 || strcmp (isec->output_section->name, ".fini") == 0);
6668 /* Space for a branch around any trampolines. */
6669 if (maybe_pasted)
6670 trampoff += 4;
6671
6672 symtab_hdr = &elf_symtab_hdr (abfd);
6673
6674 /* Get a copy of the native relocations. */
6675 internal_relocs = _bfd_elf_link_read_relocs (abfd, isec, NULL, NULL,
6676 link_info->keep_memory);
6677 if (internal_relocs == NULL)
6678 goto error_return;
6679
6680 htab = ppc_elf_hash_table (link_info);
6681 got2 = bfd_get_section_by_name (abfd, ".got2");
6682
6683 irelend = internal_relocs + isec->reloc_count;
6684 for (irel = internal_relocs; irel < irelend; irel++)
6685 {
6686 unsigned long r_type = ELF32_R_TYPE (irel->r_info);
6687 bfd_vma toff, roff;
6688 asection *tsec;
6689 struct one_fixup *f;
6690 size_t insn_offset = 0;
6691 bfd_vma max_branch_offset, val;
6692 bfd_byte *hit_addr;
6693 unsigned long t0;
6694 struct elf_link_hash_entry *h;
6695 struct plt_entry **plist;
6696 unsigned char sym_type;
6697
6698 switch (r_type)
6699 {
6700 case R_PPC_REL24:
6701 case R_PPC_LOCAL24PC:
6702 case R_PPC_PLTREL24:
6703 max_branch_offset = 1 << 25;
6704 break;
6705
6706 case R_PPC_REL14:
6707 case R_PPC_REL14_BRTAKEN:
6708 case R_PPC_REL14_BRNTAKEN:
6709 max_branch_offset = 1 << 15;
6710 break;
6711
6712 default:
6713 continue;
6714 }
6715
6716 /* Get the value of the symbol referred to by the reloc. */
6717 h = NULL;
6718 if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
6719 {
6720 /* A local symbol. */
6721 Elf_Internal_Sym *isym;
6722
6723 /* Read this BFD's local symbols. */
6724 if (isymbuf == NULL)
6725 {
6726 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
6727 if (isymbuf == NULL)
6728 isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
6729 symtab_hdr->sh_info, 0,
6730 NULL, NULL, NULL);
6731 if (isymbuf == 0)
6732 goto error_return;
6733 }
6734 isym = isymbuf + ELF32_R_SYM (irel->r_info);
6735 if (isym->st_shndx == SHN_UNDEF)
6736 tsec = bfd_und_section_ptr;
6737 else if (isym->st_shndx == SHN_ABS)
6738 tsec = bfd_abs_section_ptr;
6739 else if (isym->st_shndx == SHN_COMMON)
6740 tsec = bfd_com_section_ptr;
6741 else
6742 tsec = bfd_section_from_elf_index (abfd, isym->st_shndx);
6743
6744 toff = isym->st_value;
6745 sym_type = ELF_ST_TYPE (isym->st_info);
6746 }
6747 else
6748 {
6749 /* Global symbol handling. */
6750 unsigned long indx;
6751
6752 indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
6753 h = elf_sym_hashes (abfd)[indx];
6754
6755 while (h->root.type == bfd_link_hash_indirect
6756 || h->root.type == bfd_link_hash_warning)
6757 h = (struct elf_link_hash_entry *) h->root.u.i.link;
6758
6759 if (h->root.type == bfd_link_hash_defined
6760 || h->root.type == bfd_link_hash_defweak)
6761 {
6762 tsec = h->root.u.def.section;
6763 toff = h->root.u.def.value;
6764 }
6765 else if (h->root.type == bfd_link_hash_undefined
6766 || h->root.type == bfd_link_hash_undefweak)
6767 {
6768 tsec = bfd_und_section_ptr;
6769 toff = link_info->relocatable ? indx : 0;
6770 }
6771 else
6772 continue;
6773
6774 sym_type = h->type;
6775 }
6776
6777 /* The condition here under which we call find_plt_ent must
6778 match that in relocate_section. If we call find_plt_ent here
6779 but not in relocate_section, or vice versa, then the branch
6780 destination used here may be incorrect. */
6781 plist = NULL;
6782 if (h != NULL)
6783 {
6784 /* We know is_branch_reloc (r_type) is true. */
6785 if (h->type == STT_GNU_IFUNC
6786 || r_type == R_PPC_PLTREL24)
6787 plist = &h->plt.plist;
6788 }
6789 else if (sym_type == STT_GNU_IFUNC
6790 && elf_local_got_offsets (abfd) != NULL)
6791 {
6792 bfd_vma *local_got_offsets = elf_local_got_offsets (abfd);
6793 struct plt_entry **local_plt = (struct plt_entry **)
6794 (local_got_offsets + symtab_hdr->sh_info);
6795 plist = local_plt + ELF32_R_SYM (irel->r_info);
6796 }
6797 if (plist != NULL)
6798 {
6799 bfd_vma addend = 0;
6800 struct plt_entry *ent;
6801
6802 if (r_type == R_PPC_PLTREL24 && link_info->shared)
6803 addend = irel->r_addend;
6804 ent = find_plt_ent (plist, got2, addend);
6805 if (ent != NULL)
6806 {
6807 if (htab->plt_type == PLT_NEW
6808 || h == NULL
6809 || !htab->elf.dynamic_sections_created
6810 || h->dynindx == -1)
6811 {
6812 tsec = htab->glink;
6813 toff = ent->glink_offset;
6814 }
6815 else
6816 {
6817 tsec = htab->plt;
6818 toff = ent->plt.offset;
6819 }
6820 }
6821 }
6822
6823 /* If the branch and target are in the same section, you have
6824 no hope of adding stubs. We'll error out later should the
6825 branch overflow. */
6826 if (tsec == isec)
6827 continue;
6828
6829 /* There probably isn't any reason to handle symbols in
6830 SEC_MERGE sections; SEC_MERGE doesn't seem a likely
6831 attribute for a code section, and we are only looking at
6832 branches. However, implement it correctly here as a
6833 reference for other target relax_section functions. */
6834 if (0 && tsec->sec_info_type == SEC_INFO_TYPE_MERGE)
6835 {
6836 /* At this stage in linking, no SEC_MERGE symbol has been
6837 adjusted, so all references to such symbols need to be
6838 passed through _bfd_merged_section_offset. (Later, in
6839 relocate_section, all SEC_MERGE symbols *except* for
6840 section symbols have been adjusted.)
6841
6842 gas may reduce relocations against symbols in SEC_MERGE
6843 sections to a relocation against the section symbol when
6844 the original addend was zero. When the reloc is against
6845 a section symbol we should include the addend in the
6846 offset passed to _bfd_merged_section_offset, since the
6847 location of interest is the original symbol. On the
6848 other hand, an access to "sym+addend" where "sym" is not
6849 a section symbol should not include the addend; Such an
6850 access is presumed to be an offset from "sym"; The
6851 location of interest is just "sym". */
6852 if (sym_type == STT_SECTION)
6853 toff += irel->r_addend;
6854
6855 toff = _bfd_merged_section_offset (abfd, &tsec,
6856 elf_section_data (tsec)->sec_info,
6857 toff);
6858
6859 if (sym_type != STT_SECTION)
6860 toff += irel->r_addend;
6861 }
6862 /* PLTREL24 addends are special. */
6863 else if (r_type != R_PPC_PLTREL24)
6864 toff += irel->r_addend;
6865
6866 /* Attempted -shared link of non-pic code loses. */
6867 if (tsec->output_section == NULL)
6868 continue;
6869
6870 roff = irel->r_offset;
6871
6872 /* If the branch is in range, no need to do anything. */
6873 if (tsec != bfd_und_section_ptr
6874 && (!link_info->relocatable
6875 /* A relocatable link may have sections moved during
6876 final link, so do not presume they remain in range. */
6877 || tsec->output_section == isec->output_section))
6878 {
6879 bfd_vma symaddr, reladdr;
6880
6881 symaddr = tsec->output_section->vma + tsec->output_offset + toff;
6882 reladdr = isec->output_section->vma + isec->output_offset + roff;
6883 if (symaddr - reladdr + max_branch_offset < 2 * max_branch_offset)
6884 continue;
6885 }
6886
6887 /* Look for an existing fixup to this address. */
6888 for (f = fixups; f ; f = f->next)
6889 if (f->tsec == tsec && f->toff == toff)
6890 break;
6891
6892 if (f == NULL)
6893 {
6894 size_t size;
6895 unsigned long stub_rtype;
6896
6897 val = trampoff - roff;
6898 if (val >= max_branch_offset)
6899 /* Oh dear, we can't reach a trampoline. Don't try to add
6900 one. We'll report an error later. */
6901 continue;
6902
6903 if (link_info->shared)
6904 {
6905 size = 4 * ARRAY_SIZE (shared_stub_entry);
6906 insn_offset = 12;
6907 }
6908 else
6909 {
6910 size = 4 * ARRAY_SIZE (stub_entry);
6911 insn_offset = 0;
6912 }
6913 stub_rtype = R_PPC_RELAX;
6914 if (tsec == htab->plt
6915 || tsec == htab->glink)
6916 {
6917 stub_rtype = R_PPC_RELAX_PLT;
6918 if (r_type == R_PPC_PLTREL24)
6919 stub_rtype = R_PPC_RELAX_PLTREL24;
6920 }
6921
6922 /* Hijack the old relocation. Since we need two
6923 relocations for this use a "composite" reloc. */
6924 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
6925 stub_rtype);
6926 irel->r_offset = trampoff + insn_offset;
6927 if (r_type == R_PPC_PLTREL24
6928 && stub_rtype != R_PPC_RELAX_PLTREL24)
6929 irel->r_addend = 0;
6930
6931 /* Record the fixup so we don't do it again this section. */
6932 f = bfd_malloc (sizeof (*f));
6933 f->next = fixups;
6934 f->tsec = tsec;
6935 f->toff = toff;
6936 f->trampoff = trampoff;
6937 fixups = f;
6938
6939 trampoff += size;
6940 changes++;
6941 }
6942 else
6943 {
6944 val = f->trampoff - roff;
6945 if (val >= max_branch_offset)
6946 continue;
6947
6948 /* Nop out the reloc, since we're finalizing things here. */
6949 irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
6950 }
6951
6952 /* Get the section contents. */
6953 if (contents == NULL)
6954 {
6955 /* Get cached copy if it exists. */
6956 if (elf_section_data (isec)->this_hdr.contents != NULL)
6957 contents = elf_section_data (isec)->this_hdr.contents;
6958 else
6959 {
6960 /* Go get them off disk. */
6961 if (!bfd_malloc_and_get_section (abfd, isec, &contents))
6962 goto error_return;
6963 }
6964 }
6965
6966 /* Fix up the existing branch to hit the trampoline. */
6967 hit_addr = contents + roff;
6968 switch (r_type)
6969 {
6970 case R_PPC_REL24:
6971 case R_PPC_LOCAL24PC:
6972 case R_PPC_PLTREL24:
6973 t0 = bfd_get_32 (abfd, hit_addr);
6974 t0 &= ~0x3fffffc;
6975 t0 |= val & 0x3fffffc;
6976 bfd_put_32 (abfd, t0, hit_addr);
6977 break;
6978
6979 case R_PPC_REL14:
6980 case R_PPC_REL14_BRTAKEN:
6981 case R_PPC_REL14_BRNTAKEN:
6982 t0 = bfd_get_32 (abfd, hit_addr);
6983 t0 &= ~0xfffc;
6984 t0 |= val & 0xfffc;
6985 bfd_put_32 (abfd, t0, hit_addr);
6986 break;
6987 }
6988 }
6989
6990 /* Write out the trampolines. */
6991 if (fixups != NULL)
6992 {
6993 const int *stub;
6994 bfd_byte *dest;
6995 int i, size;
6996
6997 do
6998 {
6999 struct one_fixup *f = fixups;
7000 fixups = fixups->next;
7001 free (f);
7002 }
7003 while (fixups);
7004
7005 contents = bfd_realloc_or_free (contents, trampoff);
7006 if (contents == NULL)
7007 goto error_return;
7008
7009 isec->size = (isec->size + 3) & (bfd_vma) -4;
7010 dest = contents + isec->size;
7011 /* Branch around the trampolines. */
7012 if (maybe_pasted)
7013 {
7014 bfd_vma val = B + trampoff - isec->size;
7015 bfd_put_32 (abfd, val, dest);
7016 dest += 4;
7017 }
7018 isec->size = trampoff;
7019
7020 if (link_info->shared)
7021 {
7022 stub = shared_stub_entry;
7023 size = ARRAY_SIZE (shared_stub_entry);
7024 }
7025 else
7026 {
7027 stub = stub_entry;
7028 size = ARRAY_SIZE (stub_entry);
7029 }
7030
7031 i = 0;
7032 while (dest < contents + trampoff)
7033 {
7034 bfd_put_32 (abfd, stub[i], dest);
7035 i++;
7036 if (i == size)
7037 i = 0;
7038 dest += 4;
7039 }
7040 BFD_ASSERT (i == 0);
7041 }
7042
7043 if (isymbuf != NULL
7044 && symtab_hdr->contents != (unsigned char *) isymbuf)
7045 {
7046 if (! link_info->keep_memory)
7047 free (isymbuf);
7048 else
7049 {
7050 /* Cache the symbols for elf_link_input_bfd. */
7051 symtab_hdr->contents = (unsigned char *) isymbuf;
7052 }
7053 }
7054
7055 if (contents != NULL
7056 && elf_section_data (isec)->this_hdr.contents != contents)
7057 {
7058 if (!changes && !link_info->keep_memory)
7059 free (contents);
7060 else
7061 {
7062 /* Cache the section contents for elf_link_input_bfd. */
7063 elf_section_data (isec)->this_hdr.contents = contents;
7064 }
7065 }
7066
7067 if (changes != 0)
7068 {
7069 /* Append sufficient NOP relocs so we can write out relocation
7070 information for the trampolines. */
7071 Elf_Internal_Shdr *rel_hdr;
7072 Elf_Internal_Rela *new_relocs = bfd_malloc ((changes + isec->reloc_count)
7073 * sizeof (*new_relocs));
7074 unsigned ix;
7075
7076 if (!new_relocs)
7077 goto error_return;
7078 memcpy (new_relocs, internal_relocs,
7079 isec->reloc_count * sizeof (*new_relocs));
7080 for (ix = changes; ix--;)
7081 {
7082 irel = new_relocs + ix + isec->reloc_count;
7083
7084 irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
7085 }
7086 if (internal_relocs != elf_section_data (isec)->relocs)
7087 free (internal_relocs);
7088 elf_section_data (isec)->relocs = new_relocs;
7089 isec->reloc_count += changes;
7090 rel_hdr = _bfd_elf_single_rel_hdr (isec);
7091 rel_hdr->sh_size += changes * rel_hdr->sh_entsize;
7092 }
7093 else if (elf_section_data (isec)->relocs != internal_relocs)
7094 free (internal_relocs);
7095
7096 *again = changes != 0;
7097 if (!*again && link_info->relocatable)
7098 {
7099 /* Convert the internal relax relocs to external form. */
7100 for (irel = internal_relocs; irel < irelend; irel++)
7101 if (ELF32_R_TYPE (irel->r_info) == R_PPC_RELAX)
7102 {
7103 unsigned long r_symndx = ELF32_R_SYM (irel->r_info);
7104
7105 /* Rewrite the reloc and convert one of the trailing nop
7106 relocs to describe this relocation. */
7107 BFD_ASSERT (ELF32_R_TYPE (irelend[-1].r_info) == R_PPC_NONE);
7108 /* The relocs are at the bottom 2 bytes */
7109 irel[0].r_offset += 2;
7110 memmove (irel + 1, irel, (irelend - irel - 1) * sizeof (*irel));
7111 irel[0].r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_HA);
7112 irel[1].r_offset += 4;
7113 irel[1].r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_LO);
7114 irel++;
7115 }
7116 }
7117
7118 return TRUE;
7119
7120 error_return:
7121 if (isymbuf != NULL && (unsigned char *) isymbuf != symtab_hdr->contents)
7122 free (isymbuf);
7123 if (contents != NULL
7124 && elf_section_data (isec)->this_hdr.contents != contents)
7125 free (contents);
7126 if (internal_relocs != NULL
7127 && elf_section_data (isec)->relocs != internal_relocs)
7128 free (internal_relocs);
7129 return FALSE;
7130 }
7131 \f
7132 /* What to do when ld finds relocations against symbols defined in
7133 discarded sections. */
7134
7135 static unsigned int
7136 ppc_elf_action_discarded (asection *sec)
7137 {
7138 if (strcmp (".fixup", sec->name) == 0)
7139 return 0;
7140
7141 if (strcmp (".got2", sec->name) == 0)
7142 return 0;
7143
7144 return _bfd_elf_default_action_discarded (sec);
7145 }
7146 \f
7147 /* Fill in the address for a pointer generated in a linker section. */
7148
7149 static bfd_vma
7150 elf_finish_pointer_linker_section (bfd *input_bfd,
7151 elf_linker_section_t *lsect,
7152 struct elf_link_hash_entry *h,
7153 bfd_vma relocation,
7154 const Elf_Internal_Rela *rel)
7155 {
7156 elf_linker_section_pointers_t *linker_section_ptr;
7157
7158 BFD_ASSERT (lsect != NULL);
7159
7160 if (h != NULL)
7161 {
7162 /* Handle global symbol. */
7163 struct ppc_elf_link_hash_entry *eh;
7164
7165 eh = (struct ppc_elf_link_hash_entry *) h;
7166 BFD_ASSERT (eh->elf.def_regular);
7167 linker_section_ptr = eh->linker_section_pointer;
7168 }
7169 else
7170 {
7171 /* Handle local symbol. */
7172 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
7173
7174 BFD_ASSERT (is_ppc_elf (input_bfd));
7175 BFD_ASSERT (elf_local_ptr_offsets (input_bfd) != NULL);
7176 linker_section_ptr = elf_local_ptr_offsets (input_bfd)[r_symndx];
7177 }
7178
7179 linker_section_ptr = elf_find_pointer_linker_section (linker_section_ptr,
7180 rel->r_addend,
7181 lsect);
7182 BFD_ASSERT (linker_section_ptr != NULL);
7183
7184 /* Offset will always be a multiple of four, so use the bottom bit
7185 as a "written" flag. */
7186 if ((linker_section_ptr->offset & 1) == 0)
7187 {
7188 bfd_put_32 (lsect->section->owner,
7189 relocation + linker_section_ptr->addend,
7190 lsect->section->contents + linker_section_ptr->offset);
7191 linker_section_ptr->offset += 1;
7192 }
7193
7194 relocation = (lsect->section->output_section->vma
7195 + lsect->section->output_offset
7196 + linker_section_ptr->offset - 1
7197 - SYM_VAL (lsect->sym));
7198
7199 #ifdef DEBUG
7200 fprintf (stderr,
7201 "Finish pointer in linker section %s, offset = %ld (0x%lx)\n",
7202 lsect->name, (long) relocation, (long) relocation);
7203 #endif
7204
7205 return relocation;
7206 }
7207
7208 #define PPC_LO(v) ((v) & 0xffff)
7209 #define PPC_HI(v) (((v) >> 16) & 0xffff)
7210 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
7211
7212 static void
7213 write_glink_stub (struct plt_entry *ent, asection *plt_sec, unsigned char *p,
7214 struct bfd_link_info *info)
7215 {
7216 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
7217 bfd *output_bfd = info->output_bfd;
7218 bfd_vma plt;
7219
7220 plt = ((ent->plt.offset & ~1)
7221 + plt_sec->output_section->vma
7222 + plt_sec->output_offset);
7223
7224 if (info->shared)
7225 {
7226 bfd_vma got = 0;
7227
7228 if (ent->addend >= 32768)
7229 got = (ent->addend
7230 + ent->sec->output_section->vma
7231 + ent->sec->output_offset);
7232 else if (htab->elf.hgot != NULL)
7233 got = SYM_VAL (htab->elf.hgot);
7234
7235 plt -= got;
7236
7237 if (plt + 0x8000 < 0x10000)
7238 {
7239 bfd_put_32 (output_bfd, LWZ_11_30 + PPC_LO (plt), p);
7240 p += 4;
7241 bfd_put_32 (output_bfd, MTCTR_11, p);
7242 p += 4;
7243 bfd_put_32 (output_bfd, BCTR, p);
7244 p += 4;
7245 bfd_put_32 (output_bfd, NOP, p);
7246 p += 4;
7247 }
7248 else
7249 {
7250 bfd_put_32 (output_bfd, ADDIS_11_30 + PPC_HA (plt), p);
7251 p += 4;
7252 bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
7253 p += 4;
7254 bfd_put_32 (output_bfd, MTCTR_11, p);
7255 p += 4;
7256 bfd_put_32 (output_bfd, BCTR, p);
7257 p += 4;
7258 }
7259 }
7260 else
7261 {
7262 bfd_put_32 (output_bfd, LIS_11 + PPC_HA (plt), p);
7263 p += 4;
7264 bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
7265 p += 4;
7266 bfd_put_32 (output_bfd, MTCTR_11, p);
7267 p += 4;
7268 bfd_put_32 (output_bfd, BCTR, p);
7269 p += 4;
7270 }
7271 }
7272
7273 /* Return true if symbol is defined statically. */
7274
7275 static bfd_boolean
7276 is_static_defined (struct elf_link_hash_entry *h)
7277 {
7278 return ((h->root.type == bfd_link_hash_defined
7279 || h->root.type == bfd_link_hash_defweak)
7280 && h->root.u.def.section != NULL
7281 && h->root.u.def.section->output_section != NULL);
7282 }
7283
7284 /* If INSN is an opcode that may be used with an @tls operand, return
7285 the transformed insn for TLS optimisation, otherwise return 0. If
7286 REG is non-zero only match an insn with RB or RA equal to REG. */
7287
7288 unsigned int
7289 _bfd_elf_ppc_at_tls_transform (unsigned int insn, unsigned int reg)
7290 {
7291 unsigned int rtra;
7292
7293 if ((insn & (0x3f << 26)) != 31 << 26)
7294 return 0;
7295
7296 if (reg == 0 || ((insn >> 11) & 0x1f) == reg)
7297 rtra = insn & ((1 << 26) - (1 << 16));
7298 else if (((insn >> 16) & 0x1f) == reg)
7299 rtra = (insn & (0x1f << 21)) | ((insn & (0x1f << 11)) << 5);
7300 else
7301 return 0;
7302
7303 if ((insn & (0x3ff << 1)) == 266 << 1)
7304 /* add -> addi. */
7305 insn = 14 << 26;
7306 else if ((insn & (0x1f << 1)) == 23 << 1
7307 && ((insn & (0x1f << 6)) < 14 << 6
7308 || ((insn & (0x1f << 6)) >= 16 << 6
7309 && (insn & (0x1f << 6)) < 24 << 6)))
7310 /* load and store indexed -> dform. */
7311 insn = (32 | ((insn >> 6) & 0x1f)) << 26;
7312 else if ((insn & (((0x1a << 5) | 0x1f) << 1)) == 21 << 1)
7313 /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
7314 insn = ((58 | ((insn >> 6) & 4)) << 26) | ((insn >> 6) & 1);
7315 else if ((insn & (((0x1f << 5) | 0x1f) << 1)) == 341 << 1)
7316 /* lwax -> lwa. */
7317 insn = (58 << 26) | 2;
7318 else
7319 return 0;
7320 insn |= rtra;
7321 return insn;
7322 }
7323
7324 /* If INSN is an opcode that may be used with an @tprel operand, return
7325 the transformed insn for an undefined weak symbol, ie. with the
7326 thread pointer REG operand removed. Otherwise return 0. */
7327
7328 unsigned int
7329 _bfd_elf_ppc_at_tprel_transform (unsigned int insn, unsigned int reg)
7330 {
7331 if ((insn & (0x1f << 16)) == reg << 16
7332 && ((insn & (0x3f << 26)) == 14u << 26 /* addi */
7333 || (insn & (0x3f << 26)) == 15u << 26 /* addis */
7334 || (insn & (0x3f << 26)) == 32u << 26 /* lwz */
7335 || (insn & (0x3f << 26)) == 34u << 26 /* lbz */
7336 || (insn & (0x3f << 26)) == 36u << 26 /* stw */
7337 || (insn & (0x3f << 26)) == 38u << 26 /* stb */
7338 || (insn & (0x3f << 26)) == 40u << 26 /* lhz */
7339 || (insn & (0x3f << 26)) == 42u << 26 /* lha */
7340 || (insn & (0x3f << 26)) == 44u << 26 /* sth */
7341 || (insn & (0x3f << 26)) == 46u << 26 /* lmw */
7342 || (insn & (0x3f << 26)) == 47u << 26 /* stmw */
7343 || (insn & (0x3f << 26)) == 48u << 26 /* lfs */
7344 || (insn & (0x3f << 26)) == 50u << 26 /* lfd */
7345 || (insn & (0x3f << 26)) == 52u << 26 /* stfs */
7346 || (insn & (0x3f << 26)) == 54u << 26 /* stfd */
7347 || ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
7348 && (insn & 3) != 1)
7349 || ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */
7350 && ((insn & 3) == 0 || (insn & 3) == 3))))
7351 {
7352 insn &= ~(0x1f << 16);
7353 }
7354 else if ((insn & (0x1f << 21)) == reg << 21
7355 && ((insn & (0x3e << 26)) == 24u << 26 /* ori, oris */
7356 || (insn & (0x3e << 26)) == 26u << 26 /* xori,xoris */
7357 || (insn & (0x3e << 26)) == 28u << 26 /* andi,andis */))
7358 {
7359 insn &= ~(0x1f << 21);
7360 insn |= (insn & (0x1f << 16)) << 5;
7361 if ((insn & (0x3e << 26)) == 26 << 26 /* xori,xoris */)
7362 insn -= 2 >> 26; /* convert to ori,oris */
7363 }
7364 else
7365 insn = 0;
7366 return insn;
7367 }
7368
7369 static bfd_boolean
7370 is_insn_ds_form (unsigned int insn)
7371 {
7372 return ((insn & (0x3f << 26)) == 58u << 26 /* ld,ldu,lwa */
7373 || (insn & (0x3f << 26)) == 62u << 26 /* std,stdu,stq */
7374 || (insn & (0x3f << 26)) == 57u << 26 /* lfdp */
7375 || (insn & (0x3f << 26)) == 61u << 26 /* stfdp */);
7376 }
7377
7378 static bfd_boolean
7379 is_insn_dq_form (unsigned int insn)
7380 {
7381 return (insn & (0x3f << 26)) == 56u << 26; /* lq */
7382 }
7383
7384 /* The RELOCATE_SECTION function is called by the ELF backend linker
7385 to handle the relocations for a section.
7386
7387 The relocs are always passed as Rela structures; if the section
7388 actually uses Rel structures, the r_addend field will always be
7389 zero.
7390
7391 This function is responsible for adjust the section contents as
7392 necessary, and (if using Rela relocs and generating a
7393 relocatable output file) adjusting the reloc addend as
7394 necessary.
7395
7396 This function does not have to worry about setting the reloc
7397 address or the reloc symbol index.
7398
7399 LOCAL_SYMS is a pointer to the swapped in local symbols.
7400
7401 LOCAL_SECTIONS is an array giving the section in the input file
7402 corresponding to the st_shndx field of each local symbol.
7403
7404 The global hash table entry for the global symbols can be found
7405 via elf_sym_hashes (input_bfd).
7406
7407 When generating relocatable output, this function must handle
7408 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
7409 going to be the section symbol corresponding to the output
7410 section, which means that the addend must be adjusted
7411 accordingly. */
7412
7413 static bfd_boolean
7414 ppc_elf_relocate_section (bfd *output_bfd,
7415 struct bfd_link_info *info,
7416 bfd *input_bfd,
7417 asection *input_section,
7418 bfd_byte *contents,
7419 Elf_Internal_Rela *relocs,
7420 Elf_Internal_Sym *local_syms,
7421 asection **local_sections)
7422 {
7423 Elf_Internal_Shdr *symtab_hdr;
7424 struct elf_link_hash_entry **sym_hashes;
7425 struct ppc_elf_link_hash_table *htab;
7426 Elf_Internal_Rela *rel;
7427 Elf_Internal_Rela *relend;
7428 Elf_Internal_Rela outrel;
7429 asection *got2;
7430 bfd_vma *local_got_offsets;
7431 bfd_boolean ret = TRUE;
7432 bfd_vma d_offset = (bfd_big_endian (output_bfd) ? 2 : 0);
7433 bfd_boolean is_vxworks_tls;
7434
7435 #ifdef DEBUG
7436 _bfd_error_handler ("ppc_elf_relocate_section called for %B section %A, "
7437 "%ld relocations%s",
7438 input_bfd, input_section,
7439 (long) input_section->reloc_count,
7440 (info->relocatable) ? " (relocatable)" : "");
7441 #endif
7442
7443 got2 = bfd_get_section_by_name (input_bfd, ".got2");
7444
7445 /* Initialize howto table if not already done. */
7446 if (!ppc_elf_howto_table[R_PPC_ADDR32])
7447 ppc_elf_howto_init ();
7448
7449 htab = ppc_elf_hash_table (info);
7450 local_got_offsets = elf_local_got_offsets (input_bfd);
7451 symtab_hdr = &elf_symtab_hdr (input_bfd);
7452 sym_hashes = elf_sym_hashes (input_bfd);
7453 /* We have to handle relocations in vxworks .tls_vars sections
7454 specially, because the dynamic loader is 'weird'. */
7455 is_vxworks_tls = (htab->is_vxworks && info->shared
7456 && !strcmp (input_section->output_section->name,
7457 ".tls_vars"));
7458 rel = relocs;
7459 relend = relocs + input_section->reloc_count;
7460 for (; rel < relend; rel++)
7461 {
7462 enum elf_ppc_reloc_type r_type;
7463 bfd_vma addend;
7464 bfd_reloc_status_type r;
7465 Elf_Internal_Sym *sym;
7466 asection *sec;
7467 struct elf_link_hash_entry *h;
7468 const char *sym_name;
7469 reloc_howto_type *howto;
7470 unsigned long r_symndx;
7471 bfd_vma relocation;
7472 bfd_vma branch_bit, from;
7473 bfd_boolean unresolved_reloc;
7474 bfd_boolean warned;
7475 unsigned int tls_type, tls_mask, tls_gd;
7476 struct plt_entry **ifunc;
7477
7478 r_type = ELF32_R_TYPE (rel->r_info);
7479 sym = NULL;
7480 sec = NULL;
7481 h = NULL;
7482 unresolved_reloc = FALSE;
7483 warned = FALSE;
7484 r_symndx = ELF32_R_SYM (rel->r_info);
7485
7486 if (r_symndx < symtab_hdr->sh_info)
7487 {
7488 sym = local_syms + r_symndx;
7489 sec = local_sections[r_symndx];
7490 sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
7491
7492 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
7493 }
7494 else
7495 {
7496 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
7497 r_symndx, symtab_hdr, sym_hashes,
7498 h, sec, relocation,
7499 unresolved_reloc, warned);
7500
7501 sym_name = h->root.root.string;
7502 }
7503
7504 if (sec != NULL && discarded_section (sec))
7505 {
7506 /* For relocs against symbols from removed linkonce sections,
7507 or sections discarded by a linker script, we just want the
7508 section contents zeroed. Avoid any special processing. */
7509 howto = NULL;
7510 if (r_type < R_PPC_max)
7511 howto = ppc_elf_howto_table[r_type];
7512 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
7513 rel, 1, relend, howto, 0, contents);
7514 }
7515
7516 if (info->relocatable)
7517 {
7518 if (got2 != NULL
7519 && r_type == R_PPC_PLTREL24
7520 && rel->r_addend != 0)
7521 {
7522 /* R_PPC_PLTREL24 is rather special. If non-zero, the
7523 addend specifies the GOT pointer offset within .got2. */
7524 rel->r_addend += got2->output_offset;
7525 }
7526 continue;
7527 }
7528
7529 /* TLS optimizations. Replace instruction sequences and relocs
7530 based on information we collected in tls_optimize. We edit
7531 RELOCS so that --emit-relocs will output something sensible
7532 for the final instruction stream. */
7533 tls_mask = 0;
7534 tls_gd = 0;
7535 if (h != NULL)
7536 tls_mask = ((struct ppc_elf_link_hash_entry *) h)->tls_mask;
7537 else if (local_got_offsets != NULL)
7538 {
7539 struct plt_entry **local_plt;
7540 char *lgot_masks;
7541 local_plt
7542 = (struct plt_entry **) (local_got_offsets + symtab_hdr->sh_info);
7543 lgot_masks = (char *) (local_plt + symtab_hdr->sh_info);
7544 tls_mask = lgot_masks[r_symndx];
7545 }
7546
7547 /* Ensure reloc mapping code below stays sane. */
7548 if ((R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TLSGD16 & 3)
7549 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TLSGD16_LO & 3)
7550 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TLSGD16_HI & 3)
7551 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TLSGD16_HA & 3)
7552 || (R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TPREL16 & 3)
7553 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TPREL16_LO & 3)
7554 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TPREL16_HI & 3)
7555 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TPREL16_HA & 3))
7556 abort ();
7557 switch (r_type)
7558 {
7559 default:
7560 break;
7561
7562 case R_PPC_GOT_TPREL16:
7563 case R_PPC_GOT_TPREL16_LO:
7564 if ((tls_mask & TLS_TLS) != 0
7565 && (tls_mask & TLS_TPREL) == 0)
7566 {
7567 bfd_vma insn;
7568
7569 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset);
7570 insn &= 31 << 21;
7571 insn |= 0x3c020000; /* addis 0,2,0 */
7572 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset);
7573 r_type = R_PPC_TPREL16_HA;
7574 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7575 }
7576 break;
7577
7578 case R_PPC_TLS:
7579 if ((tls_mask & TLS_TLS) != 0
7580 && (tls_mask & TLS_TPREL) == 0)
7581 {
7582 bfd_vma insn;
7583
7584 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
7585 insn = _bfd_elf_ppc_at_tls_transform (insn, 2);
7586 if (insn == 0)
7587 abort ();
7588 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
7589 r_type = R_PPC_TPREL16_LO;
7590 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7591
7592 /* Was PPC_TLS which sits on insn boundary, now
7593 PPC_TPREL16_LO which is at low-order half-word. */
7594 rel->r_offset += d_offset;
7595 }
7596 break;
7597
7598 case R_PPC_GOT_TLSGD16_HI:
7599 case R_PPC_GOT_TLSGD16_HA:
7600 tls_gd = TLS_TPRELGD;
7601 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
7602 goto tls_gdld_hi;
7603 break;
7604
7605 case R_PPC_GOT_TLSLD16_HI:
7606 case R_PPC_GOT_TLSLD16_HA:
7607 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
7608 {
7609 tls_gdld_hi:
7610 if ((tls_mask & tls_gd) != 0)
7611 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
7612 + R_PPC_GOT_TPREL16);
7613 else
7614 {
7615 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
7616 rel->r_offset -= d_offset;
7617 r_type = R_PPC_NONE;
7618 }
7619 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7620 }
7621 break;
7622
7623 case R_PPC_GOT_TLSGD16:
7624 case R_PPC_GOT_TLSGD16_LO:
7625 tls_gd = TLS_TPRELGD;
7626 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
7627 goto tls_ldgd_opt;
7628 break;
7629
7630 case R_PPC_GOT_TLSLD16:
7631 case R_PPC_GOT_TLSLD16_LO:
7632 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
7633 {
7634 unsigned int insn1, insn2;
7635 bfd_vma offset;
7636
7637 tls_ldgd_opt:
7638 offset = (bfd_vma) -1;
7639 /* If not using the newer R_PPC_TLSGD/LD to mark
7640 __tls_get_addr calls, we must trust that the call
7641 stays with its arg setup insns, ie. that the next
7642 reloc is the __tls_get_addr call associated with
7643 the current reloc. Edit both insns. */
7644 if (input_section->has_tls_get_addr_call
7645 && rel + 1 < relend
7646 && branch_reloc_hash_match (input_bfd, rel + 1,
7647 htab->tls_get_addr))
7648 offset = rel[1].r_offset;
7649 if ((tls_mask & tls_gd) != 0)
7650 {
7651 /* IE */
7652 insn1 = bfd_get_32 (output_bfd,
7653 contents + rel->r_offset - d_offset);
7654 insn1 &= (1 << 26) - 1;
7655 insn1 |= 32 << 26; /* lwz */
7656 if (offset != (bfd_vma) -1)
7657 {
7658 rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
7659 insn2 = 0x7c631214; /* add 3,3,2 */
7660 bfd_put_32 (output_bfd, insn2, contents + offset);
7661 }
7662 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
7663 + R_PPC_GOT_TPREL16);
7664 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7665 }
7666 else
7667 {
7668 /* LE */
7669 insn1 = 0x3c620000; /* addis 3,2,0 */
7670 if (tls_gd == 0)
7671 {
7672 /* Was an LD reloc. */
7673 for (r_symndx = 0;
7674 r_symndx < symtab_hdr->sh_info;
7675 r_symndx++)
7676 if (local_sections[r_symndx] == sec)
7677 break;
7678 if (r_symndx >= symtab_hdr->sh_info)
7679 r_symndx = STN_UNDEF;
7680 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
7681 if (r_symndx != STN_UNDEF)
7682 rel->r_addend -= (local_syms[r_symndx].st_value
7683 + sec->output_offset
7684 + sec->output_section->vma);
7685 }
7686 r_type = R_PPC_TPREL16_HA;
7687 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7688 if (offset != (bfd_vma) -1)
7689 {
7690 rel[1].r_info = ELF32_R_INFO (r_symndx, R_PPC_TPREL16_LO);
7691 rel[1].r_offset = offset + d_offset;
7692 rel[1].r_addend = rel->r_addend;
7693 insn2 = 0x38630000; /* addi 3,3,0 */
7694 bfd_put_32 (output_bfd, insn2, contents + offset);
7695 }
7696 }
7697 bfd_put_32 (output_bfd, insn1,
7698 contents + rel->r_offset - d_offset);
7699 if (tls_gd == 0)
7700 {
7701 /* We changed the symbol on an LD reloc. Start over
7702 in order to get h, sym, sec etc. right. */
7703 rel--;
7704 continue;
7705 }
7706 }
7707 break;
7708
7709 case R_PPC_TLSGD:
7710 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
7711 {
7712 unsigned int insn2;
7713 bfd_vma offset = rel->r_offset;
7714
7715 if ((tls_mask & TLS_TPRELGD) != 0)
7716 {
7717 /* IE */
7718 r_type = R_PPC_NONE;
7719 insn2 = 0x7c631214; /* add 3,3,2 */
7720 }
7721 else
7722 {
7723 /* LE */
7724 r_type = R_PPC_TPREL16_LO;
7725 rel->r_offset += d_offset;
7726 insn2 = 0x38630000; /* addi 3,3,0 */
7727 }
7728 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7729 bfd_put_32 (output_bfd, insn2, contents + offset);
7730 /* Zap the reloc on the _tls_get_addr call too. */
7731 BFD_ASSERT (offset == rel[1].r_offset);
7732 rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
7733 }
7734 break;
7735
7736 case R_PPC_TLSLD:
7737 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
7738 {
7739 unsigned int insn2;
7740
7741 for (r_symndx = 0;
7742 r_symndx < symtab_hdr->sh_info;
7743 r_symndx++)
7744 if (local_sections[r_symndx] == sec)
7745 break;
7746 if (r_symndx >= symtab_hdr->sh_info)
7747 r_symndx = STN_UNDEF;
7748 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
7749 if (r_symndx != STN_UNDEF)
7750 rel->r_addend -= (local_syms[r_symndx].st_value
7751 + sec->output_offset
7752 + sec->output_section->vma);
7753
7754 rel->r_info = ELF32_R_INFO (r_symndx, R_PPC_TPREL16_LO);
7755 rel->r_offset += d_offset;
7756 insn2 = 0x38630000; /* addi 3,3,0 */
7757 bfd_put_32 (output_bfd, insn2,
7758 contents + rel->r_offset - d_offset);
7759 /* Zap the reloc on the _tls_get_addr call too. */
7760 BFD_ASSERT (rel->r_offset - d_offset == rel[1].r_offset);
7761 rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
7762 rel--;
7763 continue;
7764 }
7765 break;
7766 }
7767
7768 /* Handle other relocations that tweak non-addend part of insn. */
7769 branch_bit = 0;
7770 switch (r_type)
7771 {
7772 default:
7773 break;
7774
7775 /* Branch taken prediction relocations. */
7776 case R_PPC_ADDR14_BRTAKEN:
7777 case R_PPC_REL14_BRTAKEN:
7778 branch_bit = BRANCH_PREDICT_BIT;
7779 /* Fall thru */
7780
7781 /* Branch not taken prediction relocations. */
7782 case R_PPC_ADDR14_BRNTAKEN:
7783 case R_PPC_REL14_BRNTAKEN:
7784 {
7785 bfd_vma insn;
7786
7787 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
7788 insn &= ~BRANCH_PREDICT_BIT;
7789 insn |= branch_bit;
7790
7791 from = (rel->r_offset
7792 + input_section->output_offset
7793 + input_section->output_section->vma);
7794
7795 /* Invert 'y' bit if not the default. */
7796 if ((bfd_signed_vma) (relocation + rel->r_addend - from) < 0)
7797 insn ^= BRANCH_PREDICT_BIT;
7798
7799 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
7800 break;
7801 }
7802 }
7803
7804 ifunc = NULL;
7805 if (!htab->is_vxworks)
7806 {
7807 struct plt_entry *ent;
7808
7809 if (h != NULL)
7810 {
7811 if (h->type == STT_GNU_IFUNC)
7812 ifunc = &h->plt.plist;
7813 }
7814 else if (local_got_offsets != NULL
7815 && ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
7816 {
7817 struct plt_entry **local_plt;
7818
7819 local_plt = (struct plt_entry **) (local_got_offsets
7820 + symtab_hdr->sh_info);
7821 ifunc = local_plt + r_symndx;
7822 }
7823
7824 ent = NULL;
7825 if (ifunc != NULL
7826 && (!info->shared
7827 || is_branch_reloc (r_type)))
7828 {
7829 addend = 0;
7830 if (r_type == R_PPC_PLTREL24 && info->shared)
7831 addend = rel->r_addend;
7832 ent = find_plt_ent (ifunc, got2, addend);
7833 }
7834 if (ent != NULL)
7835 {
7836 if (h == NULL && (ent->plt.offset & 1) == 0)
7837 {
7838 Elf_Internal_Rela rela;
7839 bfd_byte *loc;
7840
7841 rela.r_offset = (htab->iplt->output_section->vma
7842 + htab->iplt->output_offset
7843 + ent->plt.offset);
7844 rela.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
7845 rela.r_addend = relocation;
7846 loc = htab->reliplt->contents;
7847 loc += (htab->reliplt->reloc_count++
7848 * sizeof (Elf32_External_Rela));
7849 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
7850
7851 ent->plt.offset |= 1;
7852 }
7853 if (h == NULL && (ent->glink_offset & 1) == 0)
7854 {
7855 unsigned char *p = ((unsigned char *) htab->glink->contents
7856 + ent->glink_offset);
7857 write_glink_stub (ent, htab->iplt, p, info);
7858 ent->glink_offset |= 1;
7859 }
7860
7861 unresolved_reloc = FALSE;
7862 if (htab->plt_type == PLT_NEW
7863 || !htab->elf.dynamic_sections_created
7864 || h == NULL)
7865 relocation = (htab->glink->output_section->vma
7866 + htab->glink->output_offset
7867 + (ent->glink_offset & ~1));
7868 else
7869 relocation = (htab->plt->output_section->vma
7870 + htab->plt->output_offset
7871 + ent->plt.offset);
7872 }
7873 }
7874
7875 addend = rel->r_addend;
7876 tls_type = 0;
7877 howto = NULL;
7878 if (r_type < R_PPC_max)
7879 howto = ppc_elf_howto_table[r_type];
7880 switch (r_type)
7881 {
7882 default:
7883 info->callbacks->einfo
7884 (_("%P: %B: unknown relocation type %d for symbol %s\n"),
7885 input_bfd, (int) r_type, sym_name);
7886
7887 bfd_set_error (bfd_error_bad_value);
7888 ret = FALSE;
7889 continue;
7890
7891 case R_PPC_NONE:
7892 case R_PPC_TLS:
7893 case R_PPC_TLSGD:
7894 case R_PPC_TLSLD:
7895 case R_PPC_EMB_MRKREF:
7896 case R_PPC_GNU_VTINHERIT:
7897 case R_PPC_GNU_VTENTRY:
7898 continue;
7899
7900 /* GOT16 relocations. Like an ADDR16 using the symbol's
7901 address in the GOT as relocation value instead of the
7902 symbol's value itself. Also, create a GOT entry for the
7903 symbol and put the symbol value there. */
7904 case R_PPC_GOT_TLSGD16:
7905 case R_PPC_GOT_TLSGD16_LO:
7906 case R_PPC_GOT_TLSGD16_HI:
7907 case R_PPC_GOT_TLSGD16_HA:
7908 tls_type = TLS_TLS | TLS_GD;
7909 goto dogot;
7910
7911 case R_PPC_GOT_TLSLD16:
7912 case R_PPC_GOT_TLSLD16_LO:
7913 case R_PPC_GOT_TLSLD16_HI:
7914 case R_PPC_GOT_TLSLD16_HA:
7915 tls_type = TLS_TLS | TLS_LD;
7916 goto dogot;
7917
7918 case R_PPC_GOT_TPREL16:
7919 case R_PPC_GOT_TPREL16_LO:
7920 case R_PPC_GOT_TPREL16_HI:
7921 case R_PPC_GOT_TPREL16_HA:
7922 tls_type = TLS_TLS | TLS_TPREL;
7923 goto dogot;
7924
7925 case R_PPC_GOT_DTPREL16:
7926 case R_PPC_GOT_DTPREL16_LO:
7927 case R_PPC_GOT_DTPREL16_HI:
7928 case R_PPC_GOT_DTPREL16_HA:
7929 tls_type = TLS_TLS | TLS_DTPREL;
7930 goto dogot;
7931
7932 case R_PPC_GOT16:
7933 case R_PPC_GOT16_LO:
7934 case R_PPC_GOT16_HI:
7935 case R_PPC_GOT16_HA:
7936 tls_mask = 0;
7937 dogot:
7938 {
7939 /* Relocation is to the entry for this symbol in the global
7940 offset table. */
7941 bfd_vma off;
7942 bfd_vma *offp;
7943 unsigned long indx;
7944
7945 if (htab->got == NULL)
7946 abort ();
7947
7948 indx = 0;
7949 if (tls_type == (TLS_TLS | TLS_LD)
7950 && (h == NULL
7951 || !h->def_dynamic))
7952 offp = &htab->tlsld_got.offset;
7953 else if (h != NULL)
7954 {
7955 bfd_boolean dyn;
7956 dyn = htab->elf.dynamic_sections_created;
7957 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
7958 || (info->shared
7959 && SYMBOL_REFERENCES_LOCAL (info, h)))
7960 /* This is actually a static link, or it is a
7961 -Bsymbolic link and the symbol is defined
7962 locally, or the symbol was forced to be local
7963 because of a version file. */
7964 ;
7965 else
7966 {
7967 BFD_ASSERT (h->dynindx != -1);
7968 indx = h->dynindx;
7969 unresolved_reloc = FALSE;
7970 }
7971 offp = &h->got.offset;
7972 }
7973 else
7974 {
7975 if (local_got_offsets == NULL)
7976 abort ();
7977 offp = &local_got_offsets[r_symndx];
7978 }
7979
7980 /* The offset must always be a multiple of 4. We use the
7981 least significant bit to record whether we have already
7982 processed this entry. */
7983 off = *offp;
7984 if ((off & 1) != 0)
7985 off &= ~1;
7986 else
7987 {
7988 unsigned int tls_m = (tls_mask
7989 & (TLS_LD | TLS_GD | TLS_DTPREL
7990 | TLS_TPREL | TLS_TPRELGD));
7991
7992 if (offp == &htab->tlsld_got.offset)
7993 tls_m = TLS_LD;
7994 else if (h == NULL
7995 || !h->def_dynamic)
7996 tls_m &= ~TLS_LD;
7997
7998 /* We might have multiple got entries for this sym.
7999 Initialize them all. */
8000 do
8001 {
8002 int tls_ty = 0;
8003
8004 if ((tls_m & TLS_LD) != 0)
8005 {
8006 tls_ty = TLS_TLS | TLS_LD;
8007 tls_m &= ~TLS_LD;
8008 }
8009 else if ((tls_m & TLS_GD) != 0)
8010 {
8011 tls_ty = TLS_TLS | TLS_GD;
8012 tls_m &= ~TLS_GD;
8013 }
8014 else if ((tls_m & TLS_DTPREL) != 0)
8015 {
8016 tls_ty = TLS_TLS | TLS_DTPREL;
8017 tls_m &= ~TLS_DTPREL;
8018 }
8019 else if ((tls_m & (TLS_TPREL | TLS_TPRELGD)) != 0)
8020 {
8021 tls_ty = TLS_TLS | TLS_TPREL;
8022 tls_m = 0;
8023 }
8024
8025 /* Generate relocs for the dynamic linker. */
8026 if ((info->shared || indx != 0)
8027 && (offp == &htab->tlsld_got.offset
8028 || h == NULL
8029 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
8030 || h->root.type != bfd_link_hash_undefweak))
8031 {
8032 asection *rsec = htab->relgot;
8033 bfd_byte * loc;
8034
8035 if (ifunc != NULL)
8036 rsec = htab->reliplt;
8037 outrel.r_offset = (htab->got->output_section->vma
8038 + htab->got->output_offset
8039 + off);
8040 outrel.r_addend = 0;
8041 if (tls_ty & (TLS_LD | TLS_GD))
8042 {
8043 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPMOD32);
8044 if (tls_ty == (TLS_TLS | TLS_GD))
8045 {
8046 loc = rsec->contents;
8047 loc += (rsec->reloc_count++
8048 * sizeof (Elf32_External_Rela));
8049 bfd_elf32_swap_reloca_out (output_bfd,
8050 &outrel, loc);
8051 outrel.r_offset += 4;
8052 outrel.r_info
8053 = ELF32_R_INFO (indx, R_PPC_DTPREL32);
8054 }
8055 }
8056 else if (tls_ty == (TLS_TLS | TLS_DTPREL))
8057 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPREL32);
8058 else if (tls_ty == (TLS_TLS | TLS_TPREL))
8059 outrel.r_info = ELF32_R_INFO (indx, R_PPC_TPREL32);
8060 else if (indx != 0)
8061 outrel.r_info = ELF32_R_INFO (indx, R_PPC_GLOB_DAT);
8062 else if (ifunc != NULL)
8063 outrel.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
8064 else
8065 outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
8066 if (indx == 0 && tls_ty != (TLS_TLS | TLS_LD))
8067 {
8068 outrel.r_addend += relocation;
8069 if (tls_ty & (TLS_GD | TLS_DTPREL | TLS_TPREL))
8070 outrel.r_addend -= htab->elf.tls_sec->vma;
8071 }
8072 loc = rsec->contents;
8073 loc += (rsec->reloc_count++
8074 * sizeof (Elf32_External_Rela));
8075 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
8076 }
8077
8078 /* Init the .got section contents if we're not
8079 emitting a reloc. */
8080 else
8081 {
8082 bfd_vma value = relocation;
8083
8084 if (tls_ty == (TLS_TLS | TLS_LD))
8085 value = 1;
8086 else if (tls_ty != 0)
8087 {
8088 value -= htab->elf.tls_sec->vma + DTP_OFFSET;
8089 if (tls_ty == (TLS_TLS | TLS_TPREL))
8090 value += DTP_OFFSET - TP_OFFSET;
8091
8092 if (tls_ty == (TLS_TLS | TLS_GD))
8093 {
8094 bfd_put_32 (output_bfd, value,
8095 htab->got->contents + off + 4);
8096 value = 1;
8097 }
8098 }
8099 bfd_put_32 (output_bfd, value,
8100 htab->got->contents + off);
8101 }
8102
8103 off += 4;
8104 if (tls_ty & (TLS_LD | TLS_GD))
8105 off += 4;
8106 }
8107 while (tls_m != 0);
8108
8109 off = *offp;
8110 *offp = off | 1;
8111 }
8112
8113 if (off >= (bfd_vma) -2)
8114 abort ();
8115
8116 if ((tls_type & TLS_TLS) != 0)
8117 {
8118 if (tls_type != (TLS_TLS | TLS_LD))
8119 {
8120 if ((tls_mask & TLS_LD) != 0
8121 && !(h == NULL
8122 || !h->def_dynamic))
8123 off += 8;
8124 if (tls_type != (TLS_TLS | TLS_GD))
8125 {
8126 if ((tls_mask & TLS_GD) != 0)
8127 off += 8;
8128 if (tls_type != (TLS_TLS | TLS_DTPREL))
8129 {
8130 if ((tls_mask & TLS_DTPREL) != 0)
8131 off += 4;
8132 }
8133 }
8134 }
8135 }
8136
8137 relocation = (htab->got->output_section->vma
8138 + htab->got->output_offset
8139 + off
8140 - SYM_VAL (htab->elf.hgot));
8141
8142 /* Addends on got relocations don't make much sense.
8143 x+off@got is actually x@got+off, and since the got is
8144 generated by a hash table traversal, the value in the
8145 got at entry m+n bears little relation to the entry m. */
8146 if (addend != 0)
8147 info->callbacks->einfo
8148 (_("%P: %H: non-zero addend on %s reloc against `%s'\n"),
8149 input_bfd, input_section, rel->r_offset,
8150 howto->name,
8151 sym_name);
8152 }
8153 break;
8154
8155 /* Relocations that need no special processing. */
8156 case R_PPC_LOCAL24PC:
8157 /* It makes no sense to point a local relocation
8158 at a symbol not in this object. */
8159 if (unresolved_reloc)
8160 {
8161 if (! (*info->callbacks->undefined_symbol) (info,
8162 h->root.root.string,
8163 input_bfd,
8164 input_section,
8165 rel->r_offset,
8166 TRUE))
8167 return FALSE;
8168 continue;
8169 }
8170 break;
8171
8172 case R_PPC_DTPREL16:
8173 case R_PPC_DTPREL16_LO:
8174 case R_PPC_DTPREL16_HI:
8175 case R_PPC_DTPREL16_HA:
8176 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
8177 break;
8178
8179 /* Relocations that may need to be propagated if this is a shared
8180 object. */
8181 case R_PPC_TPREL16:
8182 case R_PPC_TPREL16_LO:
8183 case R_PPC_TPREL16_HI:
8184 case R_PPC_TPREL16_HA:
8185 if (h != NULL
8186 && h->root.type == bfd_link_hash_undefweak
8187 && h->dynindx == -1)
8188 {
8189 /* Make this relocation against an undefined weak symbol
8190 resolve to zero. This is really just a tweak, since
8191 code using weak externs ought to check that they are
8192 defined before using them. */
8193 bfd_byte *p = contents + rel->r_offset - d_offset;
8194 unsigned int insn = bfd_get_32 (output_bfd, p);
8195 insn = _bfd_elf_ppc_at_tprel_transform (insn, 2);
8196 if (insn != 0)
8197 bfd_put_32 (output_bfd, insn, p);
8198 break;
8199 }
8200 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
8201 /* The TPREL16 relocs shouldn't really be used in shared
8202 libs as they will result in DT_TEXTREL being set, but
8203 support them anyway. */
8204 goto dodyn;
8205
8206 case R_PPC_TPREL32:
8207 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
8208 goto dodyn;
8209
8210 case R_PPC_DTPREL32:
8211 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
8212 goto dodyn;
8213
8214 case R_PPC_DTPMOD32:
8215 relocation = 1;
8216 addend = 0;
8217 goto dodyn;
8218
8219 case R_PPC_REL16:
8220 case R_PPC_REL16_LO:
8221 case R_PPC_REL16_HI:
8222 case R_PPC_REL16_HA:
8223 break;
8224
8225 case R_PPC_REL32:
8226 if (h == NULL || h == htab->elf.hgot)
8227 break;
8228 /* fall through */
8229
8230 case R_PPC_ADDR32:
8231 case R_PPC_ADDR16:
8232 case R_PPC_ADDR16_LO:
8233 case R_PPC_ADDR16_HI:
8234 case R_PPC_ADDR16_HA:
8235 case R_PPC_UADDR32:
8236 case R_PPC_UADDR16:
8237 goto dodyn;
8238
8239 case R_PPC_VLE_REL8:
8240 case R_PPC_VLE_REL15:
8241 case R_PPC_VLE_REL24:
8242 case R_PPC_REL24:
8243 case R_PPC_REL14:
8244 case R_PPC_REL14_BRTAKEN:
8245 case R_PPC_REL14_BRNTAKEN:
8246 /* If these relocations are not to a named symbol, they can be
8247 handled right here, no need to bother the dynamic linker. */
8248 if (SYMBOL_CALLS_LOCAL (info, h)
8249 || h == htab->elf.hgot)
8250 break;
8251 /* fall through */
8252
8253 case R_PPC_ADDR24:
8254 case R_PPC_ADDR14:
8255 case R_PPC_ADDR14_BRTAKEN:
8256 case R_PPC_ADDR14_BRNTAKEN:
8257 if (h != NULL && !info->shared)
8258 break;
8259 /* fall through */
8260
8261 dodyn:
8262 if ((input_section->flags & SEC_ALLOC) == 0
8263 || is_vxworks_tls)
8264 break;
8265
8266 if ((info->shared
8267 && !(h != NULL
8268 && ((h->root.type == bfd_link_hash_undefined
8269 && (ELF_ST_VISIBILITY (h->other) == STV_HIDDEN
8270 || ELF_ST_VISIBILITY (h->other) == STV_INTERNAL))
8271 || (h->root.type == bfd_link_hash_undefweak
8272 && ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)))
8273 && (must_be_dyn_reloc (info, r_type)
8274 || !SYMBOL_CALLS_LOCAL (info, h)))
8275 || (ELIMINATE_COPY_RELOCS
8276 && !info->shared
8277 && h != NULL
8278 && h->dynindx != -1
8279 && !h->non_got_ref
8280 && !h->def_regular))
8281 {
8282 int skip;
8283 bfd_byte *loc;
8284 asection *sreloc;
8285 #ifdef DEBUG
8286 fprintf (stderr, "ppc_elf_relocate_section needs to "
8287 "create relocation for %s\n",
8288 (h && h->root.root.string
8289 ? h->root.root.string : "<unknown>"));
8290 #endif
8291
8292 /* When generating a shared object, these relocations
8293 are copied into the output file to be resolved at run
8294 time. */
8295 sreloc = elf_section_data (input_section)->sreloc;
8296 if (ifunc)
8297 sreloc = htab->reliplt;
8298 if (sreloc == NULL)
8299 return FALSE;
8300
8301 skip = 0;
8302 outrel.r_offset = _bfd_elf_section_offset (output_bfd, info,
8303 input_section,
8304 rel->r_offset);
8305 if (outrel.r_offset == (bfd_vma) -1
8306 || outrel.r_offset == (bfd_vma) -2)
8307 skip = (int) outrel.r_offset;
8308 outrel.r_offset += (input_section->output_section->vma
8309 + input_section->output_offset);
8310
8311 if (skip)
8312 memset (&outrel, 0, sizeof outrel);
8313 else if ((h != NULL
8314 && (h->root.type == bfd_link_hash_undefined
8315 || h->root.type == bfd_link_hash_undefweak))
8316 || !SYMBOL_REFERENCES_LOCAL (info, h))
8317 {
8318 BFD_ASSERT (h->dynindx != -1);
8319 unresolved_reloc = FALSE;
8320 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
8321 outrel.r_addend = rel->r_addend;
8322 }
8323 else
8324 {
8325 outrel.r_addend = relocation + rel->r_addend;
8326
8327 if (r_type != R_PPC_ADDR32)
8328 {
8329 long indx = 0;
8330
8331 if (ifunc != NULL)
8332 {
8333 /* If we get here when building a static
8334 executable, then the libc startup function
8335 responsible for applying indirect function
8336 relocations is going to complain about
8337 the reloc type.
8338 If we get here when building a dynamic
8339 executable, it will be because we have
8340 a text relocation. The dynamic loader
8341 will set the text segment writable and
8342 non-executable to apply text relocations.
8343 So we'll segfault when trying to run the
8344 indirection function to resolve the reloc. */
8345 info->callbacks->einfo
8346 (_("%P: %H: relocation %s for indirect "
8347 "function %s unsupported\n"),
8348 input_bfd, input_section, rel->r_offset,
8349 howto->name,
8350 sym_name);
8351 ret = FALSE;
8352 }
8353 else if (r_symndx == STN_UNDEF || bfd_is_abs_section (sec))
8354 ;
8355 else if (sec == NULL || sec->owner == NULL)
8356 {
8357 bfd_set_error (bfd_error_bad_value);
8358 ret = FALSE;
8359 }
8360 else
8361 {
8362 asection *osec;
8363
8364 /* We are turning this relocation into one
8365 against a section symbol. It would be
8366 proper to subtract the symbol's value,
8367 osec->vma, from the emitted reloc addend,
8368 but ld.so expects buggy relocs.
8369 FIXME: Why not always use a zero index? */
8370 osec = sec->output_section;
8371 indx = elf_section_data (osec)->dynindx;
8372 if (indx == 0)
8373 {
8374 osec = htab->elf.text_index_section;
8375 indx = elf_section_data (osec)->dynindx;
8376 }
8377 BFD_ASSERT (indx != 0);
8378 #ifdef DEBUG
8379 if (indx == 0)
8380 printf ("indx=%ld section=%s flags=%08x name=%s\n",
8381 indx, osec->name, osec->flags,
8382 h->root.root.string);
8383 #endif
8384 }
8385
8386 outrel.r_info = ELF32_R_INFO (indx, r_type);
8387 }
8388 else if (ifunc != NULL)
8389 outrel.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
8390 else
8391 outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
8392 }
8393
8394 loc = sreloc->contents;
8395 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
8396 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
8397
8398 if (skip == -1)
8399 continue;
8400
8401 /* This reloc will be computed at runtime. We clear the memory
8402 so that it contains predictable value. */
8403 if (! skip
8404 && ((input_section->flags & SEC_ALLOC) != 0
8405 || ELF32_R_TYPE (outrel.r_info) != R_PPC_RELATIVE))
8406 {
8407 relocation = howto->pc_relative ? outrel.r_offset : 0;
8408 addend = 0;
8409 break;
8410 }
8411 }
8412 break;
8413
8414 case R_PPC_RELAX_PLT:
8415 case R_PPC_RELAX_PLTREL24:
8416 if (h != NULL)
8417 {
8418 struct plt_entry *ent;
8419 bfd_vma got2_addend = 0;
8420
8421 if (r_type == R_PPC_RELAX_PLTREL24)
8422 {
8423 if (info->shared)
8424 got2_addend = addend;
8425 addend = 0;
8426 }
8427 ent = find_plt_ent (&h->plt.plist, got2, got2_addend);
8428 if (htab->plt_type == PLT_NEW)
8429 relocation = (htab->glink->output_section->vma
8430 + htab->glink->output_offset
8431 + ent->glink_offset);
8432 else
8433 relocation = (htab->plt->output_section->vma
8434 + htab->plt->output_offset
8435 + ent->plt.offset);
8436 }
8437 /* Fall thru */
8438
8439 case R_PPC_RELAX:
8440 if (info->shared)
8441 relocation -= (input_section->output_section->vma
8442 + input_section->output_offset
8443 + rel->r_offset - 4);
8444
8445 {
8446 unsigned long t0;
8447 unsigned long t1;
8448
8449 t0 = bfd_get_32 (output_bfd, contents + rel->r_offset);
8450 t1 = bfd_get_32 (output_bfd, contents + rel->r_offset + 4);
8451
8452 /* We're clearing the bits for R_PPC_ADDR16_HA
8453 and R_PPC_ADDR16_LO here. */
8454 t0 &= ~0xffff;
8455 t1 &= ~0xffff;
8456
8457 /* t0 is HA, t1 is LO */
8458 relocation += addend;
8459 t0 |= ((relocation + 0x8000) >> 16) & 0xffff;
8460 t1 |= relocation & 0xffff;
8461
8462 bfd_put_32 (output_bfd, t0, contents + rel->r_offset);
8463 bfd_put_32 (output_bfd, t1, contents + rel->r_offset + 4);
8464
8465 /* Rewrite the reloc and convert one of the trailing nop
8466 relocs to describe this relocation. */
8467 BFD_ASSERT (ELF32_R_TYPE (relend[-1].r_info) == R_PPC_NONE);
8468 /* The relocs are at the bottom 2 bytes */
8469 rel[0].r_offset += 2;
8470 memmove (rel + 1, rel, (relend - rel - 1) * sizeof (*rel));
8471 rel[0].r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_HA);
8472 rel[1].r_offset += 4;
8473 rel[1].r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_LO);
8474 rel++;
8475 }
8476 continue;
8477
8478 /* Indirect .sdata relocation. */
8479 case R_PPC_EMB_SDAI16:
8480 BFD_ASSERT (htab->sdata[0].section != NULL);
8481 if (!is_static_defined (htab->sdata[0].sym))
8482 {
8483 unresolved_reloc = TRUE;
8484 break;
8485 }
8486 relocation
8487 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[0],
8488 h, relocation, rel);
8489 addend = 0;
8490 break;
8491
8492 /* Indirect .sdata2 relocation. */
8493 case R_PPC_EMB_SDA2I16:
8494 BFD_ASSERT (htab->sdata[1].section != NULL);
8495 if (!is_static_defined (htab->sdata[1].sym))
8496 {
8497 unresolved_reloc = TRUE;
8498 break;
8499 }
8500 relocation
8501 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[1],
8502 h, relocation, rel);
8503 addend = 0;
8504 break;
8505
8506 /* Handle the TOC16 reloc. We want to use the offset within the .got
8507 section, not the actual VMA. This is appropriate when generating
8508 an embedded ELF object, for which the .got section acts like the
8509 AIX .toc section. */
8510 case R_PPC_TOC16: /* phony GOT16 relocations */
8511 if (sec == NULL || sec->output_section == NULL)
8512 {
8513 unresolved_reloc = TRUE;
8514 break;
8515 }
8516 BFD_ASSERT (strcmp (bfd_get_section_name (sec->owner, sec),
8517 ".got") == 0
8518 || strcmp (bfd_get_section_name (sec->owner, sec),
8519 ".cgot") == 0);
8520
8521 addend -= sec->output_section->vma + sec->output_offset + 0x8000;
8522 break;
8523
8524 case R_PPC_PLTREL24:
8525 if (h != NULL && ifunc == NULL)
8526 {
8527 struct plt_entry *ent = find_plt_ent (&h->plt.plist, got2,
8528 info->shared ? addend : 0);
8529 if (ent == NULL
8530 || htab->plt == NULL)
8531 {
8532 /* We didn't make a PLT entry for this symbol. This
8533 happens when statically linking PIC code, or when
8534 using -Bsymbolic. */
8535 }
8536 else
8537 {
8538 /* Relocation is to the entry for this symbol in the
8539 procedure linkage table. */
8540 unresolved_reloc = FALSE;
8541 if (htab->plt_type == PLT_NEW)
8542 relocation = (htab->glink->output_section->vma
8543 + htab->glink->output_offset
8544 + ent->glink_offset);
8545 else
8546 relocation = (htab->plt->output_section->vma
8547 + htab->plt->output_offset
8548 + ent->plt.offset);
8549 }
8550 }
8551
8552 /* R_PPC_PLTREL24 is rather special. If non-zero, the
8553 addend specifies the GOT pointer offset within .got2.
8554 Don't apply it to the relocation field. */
8555 addend = 0;
8556 break;
8557
8558 /* Relocate against _SDA_BASE_. */
8559 case R_PPC_SDAREL16:
8560 {
8561 const char *name;
8562 struct elf_link_hash_entry *sda = htab->sdata[0].sym;
8563
8564 if (sec == NULL
8565 || sec->output_section == NULL
8566 || !is_static_defined (sda))
8567 {
8568 unresolved_reloc = TRUE;
8569 break;
8570 }
8571 addend -= SYM_VAL (sda);
8572
8573 name = bfd_get_section_name (output_bfd, sec->output_section);
8574 if (! ((CONST_STRNEQ (name, ".sdata")
8575 && (name[6] == 0 || name[6] == '.'))
8576 || (CONST_STRNEQ (name, ".sbss")
8577 && (name[5] == 0 || name[5] == '.'))))
8578 {
8579 info->callbacks->einfo
8580 (_("%P: %B: the target (%s) of a %s relocation is "
8581 "in the wrong output section (%s)\n"),
8582 input_bfd,
8583 sym_name,
8584 howto->name,
8585 name);
8586 }
8587 }
8588 break;
8589
8590 /* Relocate against _SDA2_BASE_. */
8591 case R_PPC_EMB_SDA2REL:
8592 {
8593 const char *name;
8594 struct elf_link_hash_entry *sda = htab->sdata[1].sym;
8595
8596 if (sec == NULL
8597 || sec->output_section == NULL
8598 || !is_static_defined (sda))
8599 {
8600 unresolved_reloc = TRUE;
8601 break;
8602 }
8603 addend -= SYM_VAL (sda);
8604
8605 name = bfd_get_section_name (output_bfd, sec->output_section);
8606 if (! (CONST_STRNEQ (name, ".sdata2")
8607 || CONST_STRNEQ (name, ".sbss2")))
8608 {
8609 info->callbacks->einfo
8610 (_("%P: %B: the target (%s) of a %s relocation is "
8611 "in the wrong output section (%s)\n"),
8612 input_bfd,
8613 sym_name,
8614 howto->name,
8615 name);
8616 }
8617 }
8618 break;
8619
8620 case R_PPC_VLE_LO16A:
8621 relocation = (relocation + addend) & 0xffff;
8622 ppc_elf_vle_split16 (output_bfd, contents, rel->r_offset,
8623 relocation, split16a_type);
8624 continue;
8625
8626 case R_PPC_VLE_LO16D:
8627 relocation = (relocation + addend) & 0xffff;
8628 ppc_elf_vle_split16 (output_bfd, contents, rel->r_offset,
8629 relocation, split16d_type);
8630 continue;
8631
8632 case R_PPC_VLE_HI16A:
8633 relocation = ((relocation + addend) >> 16) & 0xffff;
8634 ppc_elf_vle_split16 (output_bfd, contents, rel->r_offset,
8635 relocation, split16a_type);
8636 continue;
8637
8638 case R_PPC_VLE_HI16D:
8639 relocation = ((relocation + addend) >> 16) & 0xffff;
8640 ppc_elf_vle_split16 (output_bfd, contents, rel->r_offset,
8641 relocation, split16d_type);
8642 continue;
8643
8644 case R_PPC_VLE_HA16A:
8645 {
8646 bfd_vma value = relocation + addend;
8647 value = (((value >> 16) + ((value & 0x8000) ? 1 : 0)) & 0xffff);
8648 ppc_elf_vle_split16 (output_bfd, contents, rel->r_offset,
8649 value, split16a_type);
8650 }
8651 continue;
8652
8653 case R_PPC_VLE_HA16D:
8654 {
8655 bfd_vma value = relocation + addend;
8656 value = (((value >> 16) + ((value & 0x8000) ? 1 : 0)) & 0xffff);
8657 ppc_elf_vle_split16 (output_bfd, contents, rel->r_offset,
8658 value, split16d_type);
8659 }
8660 continue;
8661
8662 /* Relocate against either _SDA_BASE_, _SDA2_BASE_, or 0. */
8663 case R_PPC_EMB_SDA21:
8664 case R_PPC_VLE_SDA21:
8665 case R_PPC_EMB_RELSDA:
8666 case R_PPC_VLE_SDA21_LO:
8667 {
8668 const char *name;
8669 int reg;
8670 struct elf_link_hash_entry *sda = NULL;
8671
8672 if (sec == NULL || sec->output_section == NULL)
8673 {
8674 unresolved_reloc = TRUE;
8675 break;
8676 }
8677
8678 name = bfd_get_section_name (output_bfd, sec->output_section);
8679 if (((CONST_STRNEQ (name, ".sdata")
8680 && (name[6] == 0 || name[6] == '.'))
8681 || (CONST_STRNEQ (name, ".sbss")
8682 && (name[5] == 0 || name[5] == '.'))))
8683 {
8684 reg = 13;
8685 sda = htab->sdata[0].sym;
8686 }
8687 else if (CONST_STRNEQ (name, ".sdata2")
8688 || CONST_STRNEQ (name, ".sbss2"))
8689 {
8690 reg = 2;
8691 sda = htab->sdata[1].sym;
8692 }
8693 else if (strcmp (name, ".PPC.EMB.sdata0") == 0
8694 || strcmp (name, ".PPC.EMB.sbss0") == 0)
8695 {
8696 reg = 0;
8697 }
8698 else
8699 {
8700 info->callbacks->einfo
8701 (_("%P: %B: the target (%s) of a %s relocation is "
8702 "in the wrong output section (%s)\n"),
8703 input_bfd,
8704 sym_name,
8705 howto->name,
8706 name);
8707
8708 bfd_set_error (bfd_error_bad_value);
8709 ret = FALSE;
8710 continue;
8711 }
8712
8713 if (sda != NULL)
8714 {
8715 if (!is_static_defined (sda))
8716 {
8717 unresolved_reloc = TRUE;
8718 break;
8719 }
8720 addend -= SYM_VAL (sda);
8721 }
8722
8723 if (reg == 0
8724 && (r_type == R_PPC_VLE_SDA21
8725 || r_type == R_PPC_VLE_SDA21_LO))
8726 {
8727 /* Use the split20 format. */
8728 bfd_vma insn, bits12to15, bits21to31;
8729 bfd_vma value = (relocation + rel->r_offset) & 0xffff;
8730 /* Propagate sign bit, if necessary. */
8731 insn = (value & 0x8000) ? 0x70107800 : 0x70000000;
8732 bits12to15 = value & 0x700;
8733 bits21to31 = value & 0x7ff;
8734 insn |= bits12to15;
8735 insn |= bits21to31;
8736 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
8737 continue;
8738 }
8739 else if (r_type == R_PPC_EMB_SDA21
8740 || r_type == R_PPC_VLE_SDA21
8741 || r_type == R_PPC_VLE_SDA21_LO)
8742 {
8743 bfd_vma insn; /* Fill in register field. */
8744
8745 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
8746 insn = (insn & ~RA_REGISTER_MASK) | (reg << RA_REGISTER_SHIFT);
8747 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
8748 }
8749 }
8750 break;
8751
8752 case R_PPC_VLE_SDAREL_LO16A:
8753 case R_PPC_VLE_SDAREL_LO16D:
8754 case R_PPC_VLE_SDAREL_HI16A:
8755 case R_PPC_VLE_SDAREL_HI16D:
8756 case R_PPC_VLE_SDAREL_HA16A:
8757 case R_PPC_VLE_SDAREL_HA16D:
8758 {
8759 bfd_vma value;
8760 const char *name;
8761 //int reg;
8762 struct elf_link_hash_entry *sda = NULL;
8763
8764 if (sec == NULL || sec->output_section == NULL)
8765 {
8766 unresolved_reloc = TRUE;
8767 break;
8768 }
8769
8770 name = bfd_get_section_name (output_bfd, sec->output_section);
8771 if (((CONST_STRNEQ (name, ".sdata")
8772 && (name[6] == 0 || name[6] == '.'))
8773 || (CONST_STRNEQ (name, ".sbss")
8774 && (name[5] == 0 || name[5] == '.'))))
8775 {
8776 //reg = 13;
8777 sda = htab->sdata[0].sym;
8778 }
8779 else if (CONST_STRNEQ (name, ".sdata2")
8780 || CONST_STRNEQ (name, ".sbss2"))
8781 {
8782 //reg = 2;
8783 sda = htab->sdata[1].sym;
8784 }
8785 else
8786 {
8787 (*_bfd_error_handler)
8788 (_("%B: the target (%s) of a %s relocation is "
8789 "in the wrong output section (%s)"),
8790 input_bfd,
8791 sym_name,
8792 howto->name,
8793 name);
8794
8795 bfd_set_error (bfd_error_bad_value);
8796 ret = FALSE;
8797 continue;
8798 }
8799
8800 if (sda != NULL)
8801 {
8802 if (!is_static_defined (sda))
8803 {
8804 unresolved_reloc = TRUE;
8805 break;
8806 }
8807 }
8808
8809 value = sda->root.u.def.section->output_section->vma
8810 + sda->root.u.def.section->output_offset;
8811
8812 if (r_type == R_PPC_VLE_SDAREL_LO16A)
8813 {
8814 value = (value + addend) & 0xffff;
8815 ppc_elf_vle_split16 (output_bfd, contents, rel->r_offset,
8816 value, split16a_type);
8817 }
8818 else if (r_type == R_PPC_VLE_SDAREL_LO16D)
8819 {
8820 value = (value + addend) & 0xffff;
8821 ppc_elf_vle_split16 (output_bfd, contents, rel->r_offset,
8822 value, split16d_type);
8823 }
8824 else if (r_type == R_PPC_VLE_SDAREL_HI16A)
8825 {
8826 value = ((value + addend) >> 16) & 0xffff;
8827 ppc_elf_vle_split16 (output_bfd, contents, rel->r_offset,
8828 value, split16a_type);
8829 }
8830 else if (r_type == R_PPC_VLE_SDAREL_HI16D)
8831 {
8832 value = ((value + addend) >> 16) & 0xffff;
8833 ppc_elf_vle_split16 (output_bfd, contents, rel->r_offset,
8834 value, split16d_type);
8835 }
8836 else if (r_type == R_PPC_VLE_SDAREL_HA16A)
8837 {
8838 value += addend;
8839 value = (((value >> 16) + ((value & 0x8000) ? 1 : 0)) & 0xffff);
8840 ppc_elf_vle_split16 (output_bfd, contents, rel->r_offset,
8841 value, split16a_type);
8842 }
8843 else if (r_type == R_PPC_VLE_SDAREL_HA16D)
8844 {
8845 value += addend;
8846 value = (((value >> 16) + ((value & 0x8000) ? 1 : 0)) & 0xffff);
8847 ppc_elf_vle_split16 (output_bfd, contents, rel->r_offset,
8848 value, split16d_type);
8849 }
8850 }
8851 continue;
8852
8853 /* Relocate against the beginning of the section. */
8854 case R_PPC_SECTOFF:
8855 case R_PPC_SECTOFF_LO:
8856 case R_PPC_SECTOFF_HI:
8857 case R_PPC_SECTOFF_HA:
8858 if (sec == NULL || sec->output_section == NULL)
8859 {
8860 unresolved_reloc = TRUE;
8861 break;
8862 }
8863 addend -= sec->output_section->vma;
8864 break;
8865
8866 /* Negative relocations. */
8867 case R_PPC_EMB_NADDR32:
8868 case R_PPC_EMB_NADDR16:
8869 case R_PPC_EMB_NADDR16_LO:
8870 case R_PPC_EMB_NADDR16_HI:
8871 case R_PPC_EMB_NADDR16_HA:
8872 addend -= 2 * relocation;
8873 break;
8874
8875 case R_PPC_COPY:
8876 case R_PPC_GLOB_DAT:
8877 case R_PPC_JMP_SLOT:
8878 case R_PPC_RELATIVE:
8879 case R_PPC_IRELATIVE:
8880 case R_PPC_PLT32:
8881 case R_PPC_PLTREL32:
8882 case R_PPC_PLT16_LO:
8883 case R_PPC_PLT16_HI:
8884 case R_PPC_PLT16_HA:
8885 case R_PPC_ADDR30:
8886 case R_PPC_EMB_RELSEC16:
8887 case R_PPC_EMB_RELST_LO:
8888 case R_PPC_EMB_RELST_HI:
8889 case R_PPC_EMB_RELST_HA:
8890 case R_PPC_EMB_BIT_FLD:
8891 info->callbacks->einfo
8892 (_("%P: %B: relocation %s is not yet supported for symbol %s\n"),
8893 input_bfd,
8894 howto->name,
8895 sym_name);
8896
8897 bfd_set_error (bfd_error_invalid_operation);
8898 ret = FALSE;
8899 continue;
8900 }
8901
8902 /* Do any further special processing. */
8903 switch (r_type)
8904 {
8905 default:
8906 break;
8907
8908 case R_PPC_ADDR16_HA:
8909 case R_PPC_REL16_HA:
8910 case R_PPC_SECTOFF_HA:
8911 case R_PPC_TPREL16_HA:
8912 case R_PPC_DTPREL16_HA:
8913 case R_PPC_EMB_NADDR16_HA:
8914 case R_PPC_EMB_RELST_HA:
8915 /* It's just possible that this symbol is a weak symbol
8916 that's not actually defined anywhere. In that case,
8917 'sec' would be NULL, and we should leave the symbol
8918 alone (it will be set to zero elsewhere in the link). */
8919 if (sec == NULL)
8920 break;
8921 /* Fall thru */
8922
8923 case R_PPC_PLT16_HA:
8924 case R_PPC_GOT16_HA:
8925 case R_PPC_GOT_TLSGD16_HA:
8926 case R_PPC_GOT_TLSLD16_HA:
8927 case R_PPC_GOT_TPREL16_HA:
8928 case R_PPC_GOT_DTPREL16_HA:
8929 /* Add 0x10000 if sign bit in 0:15 is set.
8930 Bits 0:15 are not used. */
8931 addend += 0x8000;
8932 break;
8933
8934 case R_PPC_ADDR16:
8935 case R_PPC_ADDR16_LO:
8936 case R_PPC_GOT16:
8937 case R_PPC_GOT16_LO:
8938 case R_PPC_SDAREL16:
8939 case R_PPC_SECTOFF:
8940 case R_PPC_SECTOFF_LO:
8941 case R_PPC_DTPREL16:
8942 case R_PPC_DTPREL16_LO:
8943 case R_PPC_TPREL16:
8944 case R_PPC_TPREL16_LO:
8945 case R_PPC_GOT_TLSGD16:
8946 case R_PPC_GOT_TLSGD16_LO:
8947 case R_PPC_GOT_TLSLD16:
8948 case R_PPC_GOT_TLSLD16_LO:
8949 case R_PPC_GOT_DTPREL16:
8950 case R_PPC_GOT_DTPREL16_LO:
8951 case R_PPC_GOT_TPREL16:
8952 case R_PPC_GOT_TPREL16_LO:
8953 {
8954 /* The 32-bit ABI lacks proper relocations to deal with
8955 certain 64-bit instructions. Prevent damage to bits
8956 that make up part of the insn opcode. */
8957 unsigned int insn, mask, lobit;
8958
8959 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset);
8960 mask = 0;
8961 if (is_insn_ds_form (insn))
8962 mask = 3;
8963 else if (is_insn_dq_form (insn))
8964 mask = 15;
8965 else
8966 break;
8967 lobit = mask & (relocation + addend);
8968 if (lobit != 0)
8969 {
8970 addend -= lobit;
8971 info->callbacks->einfo
8972 (_("%P: %H: error: %s against `%s' not a multiple of %u\n"),
8973 input_bfd, input_section, rel->r_offset,
8974 howto->name, sym_name, mask + 1);
8975 bfd_set_error (bfd_error_bad_value);
8976 ret = FALSE;
8977 }
8978 addend += insn & mask;
8979 }
8980 break;
8981 }
8982
8983 #ifdef DEBUG
8984 fprintf (stderr, "\ttype = %s (%d), name = %s, symbol index = %ld, "
8985 "offset = %ld, addend = %ld\n",
8986 howto->name,
8987 (int) r_type,
8988 sym_name,
8989 r_symndx,
8990 (long) rel->r_offset,
8991 (long) addend);
8992 #endif
8993
8994 if (unresolved_reloc
8995 && !((input_section->flags & SEC_DEBUGGING) != 0
8996 && h->def_dynamic)
8997 && _bfd_elf_section_offset (output_bfd, info, input_section,
8998 rel->r_offset) != (bfd_vma) -1)
8999 {
9000 info->callbacks->einfo
9001 (_("%P: %H: unresolvable %s relocation against symbol `%s'\n"),
9002 input_bfd, input_section, rel->r_offset,
9003 howto->name,
9004 sym_name);
9005 ret = FALSE;
9006 }
9007
9008 r = _bfd_final_link_relocate (howto,
9009 input_bfd,
9010 input_section,
9011 contents,
9012 rel->r_offset,
9013 relocation,
9014 addend);
9015
9016 if (r != bfd_reloc_ok)
9017 {
9018 if (r == bfd_reloc_overflow)
9019 {
9020 if (warned)
9021 continue;
9022 if (h != NULL
9023 && h->root.type == bfd_link_hash_undefweak
9024 && howto->pc_relative)
9025 {
9026 /* Assume this is a call protected by other code that
9027 detect the symbol is undefined. If this is the case,
9028 we can safely ignore the overflow. If not, the
9029 program is hosed anyway, and a little warning isn't
9030 going to help. */
9031
9032 continue;
9033 }
9034
9035 if (! (*info->callbacks->reloc_overflow) (info,
9036 (h ? &h->root : NULL),
9037 sym_name,
9038 howto->name,
9039 rel->r_addend,
9040 input_bfd,
9041 input_section,
9042 rel->r_offset))
9043 return FALSE;
9044 }
9045 else
9046 {
9047 info->callbacks->einfo
9048 (_("%P: %H: %s reloc against `%s': error %d\n"),
9049 input_bfd, input_section, rel->r_offset,
9050 howto->name, sym_name, (int) r);
9051 ret = FALSE;
9052 }
9053 }
9054 }
9055
9056 #ifdef DEBUG
9057 fprintf (stderr, "\n");
9058 #endif
9059
9060 return ret;
9061 }
9062 \f
9063 /* Finish up dynamic symbol handling. We set the contents of various
9064 dynamic sections here. */
9065
9066 static bfd_boolean
9067 ppc_elf_finish_dynamic_symbol (bfd *output_bfd,
9068 struct bfd_link_info *info,
9069 struct elf_link_hash_entry *h,
9070 Elf_Internal_Sym *sym)
9071 {
9072 struct ppc_elf_link_hash_table *htab;
9073 struct plt_entry *ent;
9074 bfd_boolean doneone;
9075
9076 #ifdef DEBUG
9077 fprintf (stderr, "ppc_elf_finish_dynamic_symbol called for %s",
9078 h->root.root.string);
9079 #endif
9080
9081 htab = ppc_elf_hash_table (info);
9082 BFD_ASSERT (htab->elf.dynobj != NULL);
9083
9084 doneone = FALSE;
9085 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
9086 if (ent->plt.offset != (bfd_vma) -1)
9087 {
9088 if (!doneone)
9089 {
9090 Elf_Internal_Rela rela;
9091 bfd_byte *loc;
9092 bfd_vma reloc_index;
9093
9094 if (htab->plt_type == PLT_NEW
9095 || !htab->elf.dynamic_sections_created
9096 || h->dynindx == -1)
9097 reloc_index = ent->plt.offset / 4;
9098 else
9099 {
9100 reloc_index = ((ent->plt.offset - htab->plt_initial_entry_size)
9101 / htab->plt_slot_size);
9102 if (reloc_index > PLT_NUM_SINGLE_ENTRIES
9103 && htab->plt_type == PLT_OLD)
9104 reloc_index -= (reloc_index - PLT_NUM_SINGLE_ENTRIES) / 2;
9105 }
9106
9107 /* This symbol has an entry in the procedure linkage table.
9108 Set it up. */
9109 if (htab->plt_type == PLT_VXWORKS
9110 && htab->elf.dynamic_sections_created
9111 && h->dynindx != -1)
9112 {
9113 bfd_vma got_offset;
9114 const bfd_vma *plt_entry;
9115
9116 /* The first three entries in .got.plt are reserved. */
9117 got_offset = (reloc_index + 3) * 4;
9118
9119 /* Use the right PLT. */
9120 plt_entry = info->shared ? ppc_elf_vxworks_pic_plt_entry
9121 : ppc_elf_vxworks_plt_entry;
9122
9123 /* Fill in the .plt on VxWorks. */
9124 if (info->shared)
9125 {
9126 bfd_put_32 (output_bfd,
9127 plt_entry[0] | PPC_HA (got_offset),
9128 htab->plt->contents + ent->plt.offset + 0);
9129 bfd_put_32 (output_bfd,
9130 plt_entry[1] | PPC_LO (got_offset),
9131 htab->plt->contents + ent->plt.offset + 4);
9132 }
9133 else
9134 {
9135 bfd_vma got_loc = got_offset + SYM_VAL (htab->elf.hgot);
9136
9137 bfd_put_32 (output_bfd,
9138 plt_entry[0] | PPC_HA (got_loc),
9139 htab->plt->contents + ent->plt.offset + 0);
9140 bfd_put_32 (output_bfd,
9141 plt_entry[1] | PPC_LO (got_loc),
9142 htab->plt->contents + ent->plt.offset + 4);
9143 }
9144
9145 bfd_put_32 (output_bfd, plt_entry[2],
9146 htab->plt->contents + ent->plt.offset + 8);
9147 bfd_put_32 (output_bfd, plt_entry[3],
9148 htab->plt->contents + ent->plt.offset + 12);
9149
9150 /* This instruction is an immediate load. The value loaded is
9151 the byte offset of the R_PPC_JMP_SLOT relocation from the
9152 start of the .rela.plt section. The value is stored in the
9153 low-order 16 bits of the load instruction. */
9154 /* NOTE: It appears that this is now an index rather than a
9155 prescaled offset. */
9156 bfd_put_32 (output_bfd,
9157 plt_entry[4] | reloc_index,
9158 htab->plt->contents + ent->plt.offset + 16);
9159 /* This instruction is a PC-relative branch whose target is
9160 the start of the PLT section. The address of this branch
9161 instruction is 20 bytes beyond the start of this PLT entry.
9162 The address is encoded in bits 6-29, inclusive. The value
9163 stored is right-shifted by two bits, permitting a 26-bit
9164 offset. */
9165 bfd_put_32 (output_bfd,
9166 (plt_entry[5]
9167 | (-(ent->plt.offset + 20) & 0x03fffffc)),
9168 htab->plt->contents + ent->plt.offset + 20);
9169 bfd_put_32 (output_bfd, plt_entry[6],
9170 htab->plt->contents + ent->plt.offset + 24);
9171 bfd_put_32 (output_bfd, plt_entry[7],
9172 htab->plt->contents + ent->plt.offset + 28);
9173
9174 /* Fill in the GOT entry corresponding to this PLT slot with
9175 the address immediately after the "bctr" instruction
9176 in this PLT entry. */
9177 bfd_put_32 (output_bfd, (htab->plt->output_section->vma
9178 + htab->plt->output_offset
9179 + ent->plt.offset + 16),
9180 htab->sgotplt->contents + got_offset);
9181
9182 if (!info->shared)
9183 {
9184 /* Fill in a couple of entries in .rela.plt.unloaded. */
9185 loc = htab->srelplt2->contents
9186 + ((VXWORKS_PLTRESOLVE_RELOCS + reloc_index
9187 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS)
9188 * sizeof (Elf32_External_Rela));
9189
9190 /* Provide the @ha relocation for the first instruction. */
9191 rela.r_offset = (htab->plt->output_section->vma
9192 + htab->plt->output_offset
9193 + ent->plt.offset + 2);
9194 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
9195 R_PPC_ADDR16_HA);
9196 rela.r_addend = got_offset;
9197 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
9198 loc += sizeof (Elf32_External_Rela);
9199
9200 /* Provide the @l relocation for the second instruction. */
9201 rela.r_offset = (htab->plt->output_section->vma
9202 + htab->plt->output_offset
9203 + ent->plt.offset + 6);
9204 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
9205 R_PPC_ADDR16_LO);
9206 rela.r_addend = got_offset;
9207 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
9208 loc += sizeof (Elf32_External_Rela);
9209
9210 /* Provide a relocation for the GOT entry corresponding to this
9211 PLT slot. Point it at the middle of the .plt entry. */
9212 rela.r_offset = (htab->sgotplt->output_section->vma
9213 + htab->sgotplt->output_offset
9214 + got_offset);
9215 rela.r_info = ELF32_R_INFO (htab->elf.hplt->indx,
9216 R_PPC_ADDR32);
9217 rela.r_addend = ent->plt.offset + 16;
9218 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
9219 }
9220
9221 /* VxWorks uses non-standard semantics for R_PPC_JMP_SLOT.
9222 In particular, the offset for the relocation is not the
9223 address of the PLT entry for this function, as specified
9224 by the ABI. Instead, the offset is set to the address of
9225 the GOT slot for this function. See EABI 4.4.4.1. */
9226 rela.r_offset = (htab->sgotplt->output_section->vma
9227 + htab->sgotplt->output_offset
9228 + got_offset);
9229
9230 }
9231 else
9232 {
9233 asection *splt = htab->plt;
9234 if (!htab->elf.dynamic_sections_created
9235 || h->dynindx == -1)
9236 splt = htab->iplt;
9237
9238 rela.r_offset = (splt->output_section->vma
9239 + splt->output_offset
9240 + ent->plt.offset);
9241 if (htab->plt_type == PLT_OLD
9242 || !htab->elf.dynamic_sections_created
9243 || h->dynindx == -1)
9244 {
9245 /* We don't need to fill in the .plt. The ppc dynamic
9246 linker will fill it in. */
9247 }
9248 else
9249 {
9250 bfd_vma val = (htab->glink_pltresolve + ent->plt.offset
9251 + htab->glink->output_section->vma
9252 + htab->glink->output_offset);
9253 bfd_put_32 (output_bfd, val,
9254 splt->contents + ent->plt.offset);
9255 }
9256 }
9257
9258 /* Fill in the entry in the .rela.plt section. */
9259 rela.r_addend = 0;
9260 if (!htab->elf.dynamic_sections_created
9261 || h->dynindx == -1)
9262 {
9263 BFD_ASSERT (h->type == STT_GNU_IFUNC
9264 && h->def_regular
9265 && (h->root.type == bfd_link_hash_defined
9266 || h->root.type == bfd_link_hash_defweak));
9267 rela.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
9268 rela.r_addend = SYM_VAL (h);
9269 }
9270 else
9271 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_JMP_SLOT);
9272
9273 if (!htab->elf.dynamic_sections_created
9274 || h->dynindx == -1)
9275 loc = (htab->reliplt->contents
9276 + (htab->reliplt->reloc_count++
9277 * sizeof (Elf32_External_Rela)));
9278 else
9279 loc = (htab->relplt->contents
9280 + reloc_index * sizeof (Elf32_External_Rela));
9281 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
9282
9283 if (!h->def_regular)
9284 {
9285 /* Mark the symbol as undefined, rather than as
9286 defined in the .plt section. Leave the value if
9287 there were any relocations where pointer equality
9288 matters (this is a clue for the dynamic linker, to
9289 make function pointer comparisons work between an
9290 application and shared library), otherwise set it
9291 to zero. */
9292 sym->st_shndx = SHN_UNDEF;
9293 if (!h->pointer_equality_needed)
9294 sym->st_value = 0;
9295 else if (!h->ref_regular_nonweak)
9296 {
9297 /* This breaks function pointer comparisons, but
9298 that is better than breaking tests for a NULL
9299 function pointer. */
9300 sym->st_value = 0;
9301 }
9302 }
9303 else if (h->type == STT_GNU_IFUNC
9304 && !info->shared)
9305 {
9306 /* Set the value of ifunc symbols in a non-pie
9307 executable to the glink entry. This is to avoid
9308 text relocations. We can't do this for ifunc in
9309 allocate_dynrelocs, as we do for normal dynamic
9310 function symbols with plt entries, because we need
9311 to keep the original value around for the ifunc
9312 relocation. */
9313 sym->st_shndx = (_bfd_elf_section_from_bfd_section
9314 (output_bfd, htab->glink->output_section));
9315 sym->st_value = (ent->glink_offset
9316 + htab->glink->output_offset
9317 + htab->glink->output_section->vma);
9318 }
9319 doneone = TRUE;
9320 }
9321
9322 if (htab->plt_type == PLT_NEW
9323 || !htab->elf.dynamic_sections_created
9324 || h->dynindx == -1)
9325 {
9326 unsigned char *p;
9327 asection *splt = htab->plt;
9328 if (!htab->elf.dynamic_sections_created
9329 || h->dynindx == -1)
9330 splt = htab->iplt;
9331
9332 p = (unsigned char *) htab->glink->contents + ent->glink_offset;
9333
9334 if (h == htab->tls_get_addr && !htab->no_tls_get_addr_opt)
9335 {
9336 bfd_put_32 (output_bfd, LWZ_11_3, p);
9337 p += 4;
9338 bfd_put_32 (output_bfd, LWZ_12_3 + 4, p);
9339 p += 4;
9340 bfd_put_32 (output_bfd, MR_0_3, p);
9341 p += 4;
9342 bfd_put_32 (output_bfd, CMPWI_11_0, p);
9343 p += 4;
9344 bfd_put_32 (output_bfd, ADD_3_12_2, p);
9345 p += 4;
9346 bfd_put_32 (output_bfd, BEQLR, p);
9347 p += 4;
9348 bfd_put_32 (output_bfd, MR_3_0, p);
9349 p += 4;
9350 bfd_put_32 (output_bfd, NOP, p);
9351 p += 4;
9352 }
9353
9354 write_glink_stub (ent, splt, p, info);
9355
9356 if (!info->shared)
9357 /* We only need one non-PIC glink stub. */
9358 break;
9359 }
9360 else
9361 break;
9362 }
9363
9364 if (h->needs_copy)
9365 {
9366 asection *s;
9367 Elf_Internal_Rela rela;
9368 bfd_byte *loc;
9369
9370 /* This symbols needs a copy reloc. Set it up. */
9371
9372 #ifdef DEBUG
9373 fprintf (stderr, ", copy");
9374 #endif
9375
9376 BFD_ASSERT (h->dynindx != -1);
9377
9378 if (ppc_elf_hash_entry (h)->has_sda_refs)
9379 s = htab->relsbss;
9380 else
9381 s = htab->relbss;
9382 BFD_ASSERT (s != NULL);
9383
9384 rela.r_offset = SYM_VAL (h);
9385 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_COPY);
9386 rela.r_addend = 0;
9387 loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
9388 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
9389 }
9390
9391 #ifdef DEBUG
9392 fprintf (stderr, "\n");
9393 #endif
9394
9395 return TRUE;
9396 }
9397 \f
9398 static enum elf_reloc_type_class
9399 ppc_elf_reloc_type_class (const struct bfd_link_info *info,
9400 const asection *rel_sec,
9401 const Elf_Internal_Rela *rela)
9402 {
9403 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
9404
9405 if (rel_sec == htab->reliplt)
9406 return reloc_class_ifunc;
9407
9408 switch (ELF32_R_TYPE (rela->r_info))
9409 {
9410 case R_PPC_RELATIVE:
9411 return reloc_class_relative;
9412 case R_PPC_JMP_SLOT:
9413 return reloc_class_plt;
9414 case R_PPC_COPY:
9415 return reloc_class_copy;
9416 default:
9417 return reloc_class_normal;
9418 }
9419 }
9420 \f
9421 /* Finish up the dynamic sections. */
9422
9423 static bfd_boolean
9424 ppc_elf_finish_dynamic_sections (bfd *output_bfd,
9425 struct bfd_link_info *info)
9426 {
9427 asection *sdyn;
9428 asection *splt;
9429 struct ppc_elf_link_hash_table *htab;
9430 bfd_vma got;
9431 bfd *dynobj;
9432 bfd_boolean ret = TRUE;
9433
9434 #ifdef DEBUG
9435 fprintf (stderr, "ppc_elf_finish_dynamic_sections called\n");
9436 #endif
9437
9438 htab = ppc_elf_hash_table (info);
9439 dynobj = elf_hash_table (info)->dynobj;
9440 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
9441 if (htab->is_vxworks)
9442 splt = bfd_get_linker_section (dynobj, ".plt");
9443 else
9444 splt = NULL;
9445
9446 got = 0;
9447 if (htab->elf.hgot != NULL)
9448 got = SYM_VAL (htab->elf.hgot);
9449
9450 if (htab->elf.dynamic_sections_created)
9451 {
9452 Elf32_External_Dyn *dyncon, *dynconend;
9453
9454 BFD_ASSERT (htab->plt != NULL && sdyn != NULL);
9455
9456 dyncon = (Elf32_External_Dyn *) sdyn->contents;
9457 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
9458 for (; dyncon < dynconend; dyncon++)
9459 {
9460 Elf_Internal_Dyn dyn;
9461 asection *s;
9462
9463 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
9464
9465 switch (dyn.d_tag)
9466 {
9467 case DT_PLTGOT:
9468 if (htab->is_vxworks)
9469 s = htab->sgotplt;
9470 else
9471 s = htab->plt;
9472 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
9473 break;
9474
9475 case DT_PLTRELSZ:
9476 dyn.d_un.d_val = htab->relplt->size;
9477 break;
9478
9479 case DT_JMPREL:
9480 s = htab->relplt;
9481 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
9482 break;
9483
9484 case DT_PPC_GOT:
9485 dyn.d_un.d_ptr = got;
9486 break;
9487
9488 case DT_RELASZ:
9489 if (htab->is_vxworks)
9490 {
9491 if (htab->relplt)
9492 dyn.d_un.d_ptr -= htab->relplt->size;
9493 break;
9494 }
9495 continue;
9496
9497 default:
9498 if (htab->is_vxworks
9499 && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn))
9500 break;
9501 continue;
9502 }
9503
9504 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
9505 }
9506 }
9507
9508 if (htab->got != NULL)
9509 {
9510 if (htab->elf.hgot->root.u.def.section == htab->got
9511 || htab->elf.hgot->root.u.def.section == htab->sgotplt)
9512 {
9513 unsigned char *p = htab->elf.hgot->root.u.def.section->contents;
9514
9515 p += htab->elf.hgot->root.u.def.value;
9516 if (htab->plt_type == PLT_OLD)
9517 {
9518 /* Add a blrl instruction at _GLOBAL_OFFSET_TABLE_-4
9519 so that a function can easily find the address of
9520 _GLOBAL_OFFSET_TABLE_. */
9521 BFD_ASSERT (htab->elf.hgot->root.u.def.value - 4
9522 < htab->elf.hgot->root.u.def.section->size);
9523 bfd_put_32 (output_bfd, 0x4e800021, p - 4);
9524 }
9525
9526 if (sdyn != NULL)
9527 {
9528 bfd_vma val = sdyn->output_section->vma + sdyn->output_offset;
9529 BFD_ASSERT (htab->elf.hgot->root.u.def.value
9530 < htab->elf.hgot->root.u.def.section->size);
9531 bfd_put_32 (output_bfd, val, p);
9532 }
9533 }
9534 else
9535 {
9536 info->callbacks->einfo (_("%P: %s not defined in linker created %s\n"),
9537 htab->elf.hgot->root.root.string,
9538 (htab->sgotplt != NULL
9539 ? htab->sgotplt->name : htab->got->name));
9540 bfd_set_error (bfd_error_bad_value);
9541 ret = FALSE;
9542 }
9543
9544 elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 4;
9545 }
9546
9547 /* Fill in the first entry in the VxWorks procedure linkage table. */
9548 if (splt && splt->size > 0)
9549 {
9550 /* Use the right PLT. */
9551 const bfd_vma *plt_entry = (info->shared
9552 ? ppc_elf_vxworks_pic_plt0_entry
9553 : ppc_elf_vxworks_plt0_entry);
9554
9555 if (!info->shared)
9556 {
9557 bfd_vma got_value = SYM_VAL (htab->elf.hgot);
9558
9559 bfd_put_32 (output_bfd, plt_entry[0] | PPC_HA (got_value),
9560 splt->contents + 0);
9561 bfd_put_32 (output_bfd, plt_entry[1] | PPC_LO (got_value),
9562 splt->contents + 4);
9563 }
9564 else
9565 {
9566 bfd_put_32 (output_bfd, plt_entry[0], splt->contents + 0);
9567 bfd_put_32 (output_bfd, plt_entry[1], splt->contents + 4);
9568 }
9569 bfd_put_32 (output_bfd, plt_entry[2], splt->contents + 8);
9570 bfd_put_32 (output_bfd, plt_entry[3], splt->contents + 12);
9571 bfd_put_32 (output_bfd, plt_entry[4], splt->contents + 16);
9572 bfd_put_32 (output_bfd, plt_entry[5], splt->contents + 20);
9573 bfd_put_32 (output_bfd, plt_entry[6], splt->contents + 24);
9574 bfd_put_32 (output_bfd, plt_entry[7], splt->contents + 28);
9575
9576 if (! info->shared)
9577 {
9578 Elf_Internal_Rela rela;
9579 bfd_byte *loc;
9580
9581 loc = htab->srelplt2->contents;
9582
9583 /* Output the @ha relocation for the first instruction. */
9584 rela.r_offset = (htab->plt->output_section->vma
9585 + htab->plt->output_offset
9586 + 2);
9587 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
9588 rela.r_addend = 0;
9589 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
9590 loc += sizeof (Elf32_External_Rela);
9591
9592 /* Output the @l relocation for the second instruction. */
9593 rela.r_offset = (htab->plt->output_section->vma
9594 + htab->plt->output_offset
9595 + 6);
9596 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
9597 rela.r_addend = 0;
9598 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
9599 loc += sizeof (Elf32_External_Rela);
9600
9601 /* Fix up the remaining relocations. They may have the wrong
9602 symbol index for _G_O_T_ or _P_L_T_ depending on the order
9603 in which symbols were output. */
9604 while (loc < htab->srelplt2->contents + htab->srelplt2->size)
9605 {
9606 Elf_Internal_Rela rel;
9607
9608 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
9609 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
9610 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
9611 loc += sizeof (Elf32_External_Rela);
9612
9613 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
9614 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
9615 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
9616 loc += sizeof (Elf32_External_Rela);
9617
9618 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
9619 rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_PPC_ADDR32);
9620 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
9621 loc += sizeof (Elf32_External_Rela);
9622 }
9623 }
9624 }
9625
9626 if (htab->glink != NULL
9627 && htab->glink->contents != NULL
9628 && htab->elf.dynamic_sections_created)
9629 {
9630 unsigned char *p;
9631 unsigned char *endp;
9632 bfd_vma res0;
9633 unsigned int i;
9634
9635 /*
9636 * PIC glink code is the following:
9637 *
9638 * # ith PLT code stub.
9639 * addis 11,30,(plt+(i-1)*4-got)@ha
9640 * lwz 11,(plt+(i-1)*4-got)@l(11)
9641 * mtctr 11
9642 * bctr
9643 *
9644 * # A table of branches, one for each plt entry.
9645 * # The idea is that the plt call stub loads ctr and r11 with these
9646 * # addresses, so (r11 - res_0) gives the plt index * 4.
9647 * res_0: b PLTresolve
9648 * res_1: b PLTresolve
9649 * .
9650 * # Some number of entries towards the end can be nops
9651 * res_n_m3: nop
9652 * res_n_m2: nop
9653 * res_n_m1:
9654 *
9655 * PLTresolve:
9656 * addis 11,11,(1f-res_0)@ha
9657 * mflr 0
9658 * bcl 20,31,1f
9659 * 1: addi 11,11,(1b-res_0)@l
9660 * mflr 12
9661 * mtlr 0
9662 * sub 11,11,12 # r11 = index * 4
9663 * addis 12,12,(got+4-1b)@ha
9664 * lwz 0,(got+4-1b)@l(12) # got[1] address of dl_runtime_resolve
9665 * lwz 12,(got+8-1b)@l(12) # got[2] contains the map address
9666 * mtctr 0
9667 * add 0,11,11
9668 * add 11,0,11 # r11 = index * 12 = reloc offset.
9669 * bctr
9670 */
9671 static const unsigned int pic_plt_resolve[] =
9672 {
9673 ADDIS_11_11,
9674 MFLR_0,
9675 BCL_20_31,
9676 ADDI_11_11,
9677 MFLR_12,
9678 MTLR_0,
9679 SUB_11_11_12,
9680 ADDIS_12_12,
9681 LWZ_0_12,
9682 LWZ_12_12,
9683 MTCTR_0,
9684 ADD_0_11_11,
9685 ADD_11_0_11,
9686 BCTR,
9687 NOP,
9688 NOP
9689 };
9690
9691 /*
9692 * Non-PIC glink code is a little simpler.
9693 *
9694 * # ith PLT code stub.
9695 * lis 11,(plt+(i-1)*4)@ha
9696 * lwz 11,(plt+(i-1)*4)@l(11)
9697 * mtctr 11
9698 * bctr
9699 *
9700 * The branch table is the same, then comes
9701 *
9702 * PLTresolve:
9703 * lis 12,(got+4)@ha
9704 * addis 11,11,(-res_0)@ha
9705 * lwz 0,(got+4)@l(12) # got[1] address of dl_runtime_resolve
9706 * addi 11,11,(-res_0)@l # r11 = index * 4
9707 * mtctr 0
9708 * add 0,11,11
9709 * lwz 12,(got+8)@l(12) # got[2] contains the map address
9710 * add 11,0,11 # r11 = index * 12 = reloc offset.
9711 * bctr
9712 */
9713 static const unsigned int plt_resolve[] =
9714 {
9715 LIS_12,
9716 ADDIS_11_11,
9717 LWZ_0_12,
9718 ADDI_11_11,
9719 MTCTR_0,
9720 ADD_0_11_11,
9721 LWZ_12_12,
9722 ADD_11_0_11,
9723 BCTR,
9724 NOP,
9725 NOP,
9726 NOP,
9727 NOP,
9728 NOP,
9729 NOP,
9730 NOP
9731 };
9732
9733 if (ARRAY_SIZE (pic_plt_resolve) != GLINK_PLTRESOLVE / 4)
9734 abort ();
9735 if (ARRAY_SIZE (plt_resolve) != GLINK_PLTRESOLVE / 4)
9736 abort ();
9737
9738 /* Build the branch table, one for each plt entry (less one),
9739 and perhaps some padding. */
9740 p = htab->glink->contents;
9741 p += htab->glink_pltresolve;
9742 endp = htab->glink->contents;
9743 endp += htab->glink->size - GLINK_PLTRESOLVE;
9744 while (p < endp - 8 * 4)
9745 {
9746 bfd_put_32 (output_bfd, B + endp - p, p);
9747 p += 4;
9748 }
9749 while (p < endp)
9750 {
9751 bfd_put_32 (output_bfd, NOP, p);
9752 p += 4;
9753 }
9754
9755 res0 = (htab->glink_pltresolve
9756 + htab->glink->output_section->vma
9757 + htab->glink->output_offset);
9758
9759 /* Last comes the PLTresolve stub. */
9760 if (info->shared)
9761 {
9762 bfd_vma bcl;
9763
9764 for (i = 0; i < ARRAY_SIZE (pic_plt_resolve); i++)
9765 {
9766 bfd_put_32 (output_bfd, pic_plt_resolve[i], p);
9767 p += 4;
9768 }
9769 p -= 4 * ARRAY_SIZE (pic_plt_resolve);
9770
9771 bcl = (htab->glink->size - GLINK_PLTRESOLVE + 3*4
9772 + htab->glink->output_section->vma
9773 + htab->glink->output_offset);
9774
9775 bfd_put_32 (output_bfd,
9776 ADDIS_11_11 + PPC_HA (bcl - res0), p + 0*4);
9777 bfd_put_32 (output_bfd,
9778 ADDI_11_11 + PPC_LO (bcl - res0), p + 3*4);
9779 bfd_put_32 (output_bfd,
9780 ADDIS_12_12 + PPC_HA (got + 4 - bcl), p + 7*4);
9781 if (PPC_HA (got + 4 - bcl) == PPC_HA (got + 8 - bcl))
9782 {
9783 bfd_put_32 (output_bfd,
9784 LWZ_0_12 + PPC_LO (got + 4 - bcl), p + 8*4);
9785 bfd_put_32 (output_bfd,
9786 LWZ_12_12 + PPC_LO (got + 8 - bcl), p + 9*4);
9787 }
9788 else
9789 {
9790 bfd_put_32 (output_bfd,
9791 LWZU_0_12 + PPC_LO (got + 4 - bcl), p + 8*4);
9792 bfd_put_32 (output_bfd,
9793 LWZ_12_12 + 4, p + 9*4);
9794 }
9795 }
9796 else
9797 {
9798 for (i = 0; i < ARRAY_SIZE (plt_resolve); i++)
9799 {
9800 bfd_put_32 (output_bfd, plt_resolve[i], p);
9801 p += 4;
9802 }
9803 p -= 4 * ARRAY_SIZE (plt_resolve);
9804
9805 bfd_put_32 (output_bfd,
9806 LIS_12 + PPC_HA (got + 4), p + 0*4);
9807 bfd_put_32 (output_bfd,
9808 ADDIS_11_11 + PPC_HA (-res0), p + 1*4);
9809 bfd_put_32 (output_bfd,
9810 ADDI_11_11 + PPC_LO (-res0), p + 3*4);
9811 if (PPC_HA (got + 4) == PPC_HA (got + 8))
9812 {
9813 bfd_put_32 (output_bfd,
9814 LWZ_0_12 + PPC_LO (got + 4), p + 2*4);
9815 bfd_put_32 (output_bfd,
9816 LWZ_12_12 + PPC_LO (got + 8), p + 6*4);
9817 }
9818 else
9819 {
9820 bfd_put_32 (output_bfd,
9821 LWZU_0_12 + PPC_LO (got + 4), p + 2*4);
9822 bfd_put_32 (output_bfd,
9823 LWZ_12_12 + 4, p + 6*4);
9824 }
9825 }
9826 }
9827
9828 if (htab->glink_eh_frame != NULL
9829 && htab->glink_eh_frame->contents != NULL)
9830 {
9831 unsigned char *p = htab->glink_eh_frame->contents;
9832 bfd_vma val;
9833
9834 p += sizeof (glink_eh_frame_cie);
9835 /* FDE length. */
9836 p += 4;
9837 /* CIE pointer. */
9838 p += 4;
9839 /* Offset to .glink. */
9840 val = (htab->glink->output_section->vma
9841 + htab->glink->output_offset);
9842 val -= (htab->glink_eh_frame->output_section->vma
9843 + htab->glink_eh_frame->output_offset);
9844 val -= p - htab->glink_eh_frame->contents;
9845 bfd_put_32 (htab->elf.dynobj, val, p);
9846
9847 if (htab->glink_eh_frame->sec_info_type == SEC_INFO_TYPE_EH_FRAME
9848 && !_bfd_elf_write_section_eh_frame (output_bfd, info,
9849 htab->glink_eh_frame,
9850 htab->glink_eh_frame->contents))
9851 return FALSE;
9852 }
9853
9854 return ret;
9855 }
9856 \f
9857 #define TARGET_LITTLE_SYM bfd_elf32_powerpcle_vec
9858 #define TARGET_LITTLE_NAME "elf32-powerpcle"
9859 #define TARGET_BIG_SYM bfd_elf32_powerpc_vec
9860 #define TARGET_BIG_NAME "elf32-powerpc"
9861 #define ELF_ARCH bfd_arch_powerpc
9862 #define ELF_TARGET_ID PPC32_ELF_DATA
9863 #define ELF_MACHINE_CODE EM_PPC
9864 #ifdef __QNXTARGET__
9865 #define ELF_MAXPAGESIZE 0x1000
9866 #else
9867 #define ELF_MAXPAGESIZE 0x10000
9868 #endif
9869 #define ELF_MINPAGESIZE 0x1000
9870 #define ELF_COMMONPAGESIZE 0x1000
9871 #define elf_info_to_howto ppc_elf_info_to_howto
9872
9873 #ifdef EM_CYGNUS_POWERPC
9874 #define ELF_MACHINE_ALT1 EM_CYGNUS_POWERPC
9875 #endif
9876
9877 #ifdef EM_PPC_OLD
9878 #define ELF_MACHINE_ALT2 EM_PPC_OLD
9879 #endif
9880
9881 #define elf_backend_plt_not_loaded 1
9882 #define elf_backend_can_gc_sections 1
9883 #define elf_backend_can_refcount 1
9884 #define elf_backend_rela_normal 1
9885
9886 #define bfd_elf32_mkobject ppc_elf_mkobject
9887 #define bfd_elf32_bfd_merge_private_bfd_data ppc_elf_merge_private_bfd_data
9888 #define bfd_elf32_bfd_relax_section ppc_elf_relax_section
9889 #define bfd_elf32_bfd_reloc_type_lookup ppc_elf_reloc_type_lookup
9890 #define bfd_elf32_bfd_reloc_name_lookup ppc_elf_reloc_name_lookup
9891 #define bfd_elf32_bfd_set_private_flags ppc_elf_set_private_flags
9892 #define bfd_elf32_bfd_link_hash_table_create ppc_elf_link_hash_table_create
9893 #define bfd_elf32_get_synthetic_symtab ppc_elf_get_synthetic_symtab
9894
9895 #define elf_backend_object_p ppc_elf_object_p
9896 #define elf_backend_gc_mark_hook ppc_elf_gc_mark_hook
9897 #define elf_backend_gc_sweep_hook ppc_elf_gc_sweep_hook
9898 #define elf_backend_section_from_shdr ppc_elf_section_from_shdr
9899 #define elf_backend_relocate_section ppc_elf_relocate_section
9900 #define elf_backend_create_dynamic_sections ppc_elf_create_dynamic_sections
9901 #define elf_backend_check_relocs ppc_elf_check_relocs
9902 #define elf_backend_copy_indirect_symbol ppc_elf_copy_indirect_symbol
9903 #define elf_backend_adjust_dynamic_symbol ppc_elf_adjust_dynamic_symbol
9904 #define elf_backend_add_symbol_hook ppc_elf_add_symbol_hook
9905 #define elf_backend_size_dynamic_sections ppc_elf_size_dynamic_sections
9906 #define elf_backend_hash_symbol ppc_elf_hash_symbol
9907 #define elf_backend_finish_dynamic_symbol ppc_elf_finish_dynamic_symbol
9908 #define elf_backend_finish_dynamic_sections ppc_elf_finish_dynamic_sections
9909 #define elf_backend_fake_sections ppc_elf_fake_sections
9910 #define elf_backend_additional_program_headers ppc_elf_additional_program_headers
9911 #define elf_backend_modify_segment_map ppc_elf_modify_segment_map
9912 #define elf_backend_grok_prstatus ppc_elf_grok_prstatus
9913 #define elf_backend_grok_psinfo ppc_elf_grok_psinfo
9914 #define elf_backend_write_core_note ppc_elf_write_core_note
9915 #define elf_backend_reloc_type_class ppc_elf_reloc_type_class
9916 #define elf_backend_begin_write_processing ppc_elf_begin_write_processing
9917 #define elf_backend_final_write_processing ppc_elf_final_write_processing
9918 #define elf_backend_write_section ppc_elf_write_section
9919 #define elf_backend_get_sec_type_attr ppc_elf_get_sec_type_attr
9920 #define elf_backend_plt_sym_val ppc_elf_plt_sym_val
9921 #define elf_backend_action_discarded ppc_elf_action_discarded
9922 #define elf_backend_init_index_section _bfd_elf_init_1_index_section
9923 #define elf_backend_post_process_headers _bfd_elf_set_osabi
9924 #define elf_backend_lookup_section_flags_hook ppc_elf_lookup_section_flags
9925 #define elf_backend_section_processing ppc_elf_section_processing
9926
9927 #include "elf32-target.h"
9928
9929 /* FreeBSD Target */
9930
9931 #undef TARGET_LITTLE_SYM
9932 #undef TARGET_LITTLE_NAME
9933
9934 #undef TARGET_BIG_SYM
9935 #define TARGET_BIG_SYM bfd_elf32_powerpc_freebsd_vec
9936 #undef TARGET_BIG_NAME
9937 #define TARGET_BIG_NAME "elf32-powerpc-freebsd"
9938
9939 #undef ELF_OSABI
9940 #define ELF_OSABI ELFOSABI_FREEBSD
9941
9942 #undef elf32_bed
9943 #define elf32_bed elf32_powerpc_fbsd_bed
9944
9945 #include "elf32-target.h"
9946
9947 /* VxWorks Target */
9948
9949 #undef TARGET_LITTLE_SYM
9950 #undef TARGET_LITTLE_NAME
9951
9952 #undef TARGET_BIG_SYM
9953 #define TARGET_BIG_SYM bfd_elf32_powerpc_vxworks_vec
9954 #undef TARGET_BIG_NAME
9955 #define TARGET_BIG_NAME "elf32-powerpc-vxworks"
9956
9957 #undef ELF_OSABI
9958
9959 /* VxWorks uses the elf default section flags for .plt. */
9960 static const struct bfd_elf_special_section *
9961 ppc_elf_vxworks_get_sec_type_attr (bfd *abfd ATTRIBUTE_UNUSED, asection *sec)
9962 {
9963 if (sec->name == NULL)
9964 return NULL;
9965
9966 if (strcmp (sec->name, ".plt") == 0)
9967 return _bfd_elf_get_sec_type_attr (abfd, sec);
9968
9969 return ppc_elf_get_sec_type_attr (abfd, sec);
9970 }
9971
9972 /* Like ppc_elf_link_hash_table_create, but overrides
9973 appropriately for VxWorks. */
9974 static struct bfd_link_hash_table *
9975 ppc_elf_vxworks_link_hash_table_create (bfd *abfd)
9976 {
9977 struct bfd_link_hash_table *ret;
9978
9979 ret = ppc_elf_link_hash_table_create (abfd);
9980 if (ret)
9981 {
9982 struct ppc_elf_link_hash_table *htab
9983 = (struct ppc_elf_link_hash_table *)ret;
9984 htab->is_vxworks = 1;
9985 htab->plt_type = PLT_VXWORKS;
9986 htab->plt_entry_size = VXWORKS_PLT_ENTRY_SIZE;
9987 htab->plt_slot_size = VXWORKS_PLT_ENTRY_SIZE;
9988 htab->plt_initial_entry_size = VXWORKS_PLT_INITIAL_ENTRY_SIZE;
9989 }
9990 return ret;
9991 }
9992
9993 /* Tweak magic VxWorks symbols as they are loaded. */
9994 static bfd_boolean
9995 ppc_elf_vxworks_add_symbol_hook (bfd *abfd,
9996 struct bfd_link_info *info,
9997 Elf_Internal_Sym *sym,
9998 const char **namep ATTRIBUTE_UNUSED,
9999 flagword *flagsp ATTRIBUTE_UNUSED,
10000 asection **secp,
10001 bfd_vma *valp)
10002 {
10003 if (!elf_vxworks_add_symbol_hook(abfd, info, sym,namep, flagsp, secp,
10004 valp))
10005 return FALSE;
10006
10007 return ppc_elf_add_symbol_hook(abfd, info, sym,namep, flagsp, secp, valp);
10008 }
10009
10010 static void
10011 ppc_elf_vxworks_final_write_processing (bfd *abfd, bfd_boolean linker)
10012 {
10013 ppc_elf_final_write_processing(abfd, linker);
10014 elf_vxworks_final_write_processing(abfd, linker);
10015 }
10016
10017 /* On VxWorks, we emit relocations against _PROCEDURE_LINKAGE_TABLE_, so
10018 define it. */
10019 #undef elf_backend_want_plt_sym
10020 #define elf_backend_want_plt_sym 1
10021 #undef elf_backend_want_got_plt
10022 #define elf_backend_want_got_plt 1
10023 #undef elf_backend_got_symbol_offset
10024 #define elf_backend_got_symbol_offset 0
10025 #undef elf_backend_plt_not_loaded
10026 #define elf_backend_plt_not_loaded 0
10027 #undef elf_backend_plt_readonly
10028 #define elf_backend_plt_readonly 1
10029 #undef elf_backend_got_header_size
10030 #define elf_backend_got_header_size 12
10031
10032 #undef bfd_elf32_get_synthetic_symtab
10033
10034 #undef bfd_elf32_bfd_link_hash_table_create
10035 #define bfd_elf32_bfd_link_hash_table_create \
10036 ppc_elf_vxworks_link_hash_table_create
10037 #undef elf_backend_add_symbol_hook
10038 #define elf_backend_add_symbol_hook \
10039 ppc_elf_vxworks_add_symbol_hook
10040 #undef elf_backend_link_output_symbol_hook
10041 #define elf_backend_link_output_symbol_hook \
10042 elf_vxworks_link_output_symbol_hook
10043 #undef elf_backend_final_write_processing
10044 #define elf_backend_final_write_processing \
10045 ppc_elf_vxworks_final_write_processing
10046 #undef elf_backend_get_sec_type_attr
10047 #define elf_backend_get_sec_type_attr \
10048 ppc_elf_vxworks_get_sec_type_attr
10049 #undef elf_backend_emit_relocs
10050 #define elf_backend_emit_relocs \
10051 elf_vxworks_emit_relocs
10052
10053 #undef elf32_bed
10054 #define elf32_bed ppc_elf_vxworks_bed
10055 #undef elf_backend_post_process_headers
10056
10057 #include "elf32-target.h"
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