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* elf-bfd.h (struct core_elf_obj_tdata): New.
[deliverable/binutils-gdb.git] / bfd / elf32-ppc.c
1 /* PowerPC-specific support for 32-bit ELF
2 Copyright 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
3 2004, 2005, 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 /* PPC ELF linker hash entry. */
3087
3088 struct ppc_elf_link_hash_entry
3089 {
3090 struct elf_link_hash_entry elf;
3091
3092 /* If this symbol is used in the linker created sections, the processor
3093 specific backend uses this field to map the field into the offset
3094 from the beginning of the section. */
3095 elf_linker_section_pointers_t *linker_section_pointer;
3096
3097 /* Track dynamic relocs copied for this symbol. */
3098 struct elf_dyn_relocs *dyn_relocs;
3099
3100 /* Contexts in which symbol is used in the GOT (or TOC).
3101 TLS_GD .. TLS_TLS bits are or'd into the mask as the
3102 corresponding relocs are encountered during check_relocs.
3103 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
3104 indicate the corresponding GOT entry type is not needed. */
3105 #define TLS_GD 1 /* GD reloc. */
3106 #define TLS_LD 2 /* LD reloc. */
3107 #define TLS_TPREL 4 /* TPREL reloc, => IE. */
3108 #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
3109 #define TLS_TLS 16 /* Any TLS reloc. */
3110 #define TLS_TPRELGD 32 /* TPREL reloc resulting from GD->IE. */
3111 #define PLT_IFUNC 64 /* STT_GNU_IFUNC. */
3112 char tls_mask;
3113
3114 /* Nonzero if we have seen a small data relocation referring to this
3115 symbol. */
3116 unsigned char has_sda_refs;
3117 };
3118
3119 #define ppc_elf_hash_entry(ent) ((struct ppc_elf_link_hash_entry *) (ent))
3120
3121 /* PPC ELF linker hash table. */
3122
3123 struct ppc_elf_link_hash_table
3124 {
3125 struct elf_link_hash_table elf;
3126
3127 /* Short-cuts to get to dynamic linker sections. */
3128 asection *got;
3129 asection *relgot;
3130 asection *glink;
3131 asection *plt;
3132 asection *relplt;
3133 asection *iplt;
3134 asection *reliplt;
3135 asection *dynbss;
3136 asection *relbss;
3137 asection *dynsbss;
3138 asection *relsbss;
3139 elf_linker_section_t sdata[2];
3140 asection *sbss;
3141 asection *glink_eh_frame;
3142
3143 /* The (unloaded but important) .rela.plt.unloaded on VxWorks. */
3144 asection *srelplt2;
3145
3146 /* The .got.plt section (VxWorks only)*/
3147 asection *sgotplt;
3148
3149 /* Shortcut to __tls_get_addr. */
3150 struct elf_link_hash_entry *tls_get_addr;
3151
3152 /* The bfd that forced an old-style PLT. */
3153 bfd *old_bfd;
3154
3155 /* TLS local dynamic got entry handling. */
3156 union {
3157 bfd_signed_vma refcount;
3158 bfd_vma offset;
3159 } tlsld_got;
3160
3161 /* Offset of branch table to PltResolve function in glink. */
3162 bfd_vma glink_pltresolve;
3163
3164 /* Size of reserved GOT entries. */
3165 unsigned int got_header_size;
3166 /* Non-zero if allocating the header left a gap. */
3167 unsigned int got_gap;
3168
3169 /* The type of PLT we have chosen to use. */
3170 enum ppc_elf_plt_type plt_type;
3171
3172 /* Set if we should emit symbols for stubs. */
3173 unsigned int emit_stub_syms:1;
3174
3175 /* Set if __tls_get_addr optimization should not be done. */
3176 unsigned int no_tls_get_addr_opt:1;
3177
3178 /* True if the target system is VxWorks. */
3179 unsigned int is_vxworks:1;
3180
3181 /* The size of PLT entries. */
3182 int plt_entry_size;
3183 /* The distance between adjacent PLT slots. */
3184 int plt_slot_size;
3185 /* The size of the first PLT entry. */
3186 int plt_initial_entry_size;
3187
3188 /* Small local sym cache. */
3189 struct sym_cache sym_cache;
3190 };
3191
3192 /* Rename some of the generic section flags to better document how they
3193 are used for ppc32. The flags are only valid for ppc32 elf objects. */
3194
3195 /* Nonzero if this section has TLS related relocations. */
3196 #define has_tls_reloc sec_flg0
3197
3198 /* Nonzero if this section has a call to __tls_get_addr. */
3199 #define has_tls_get_addr_call sec_flg1
3200
3201 /* Get the PPC ELF linker hash table from a link_info structure. */
3202
3203 #define ppc_elf_hash_table(p) \
3204 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
3205 == PPC32_ELF_DATA ? ((struct ppc_elf_link_hash_table *) ((p)->hash)) : NULL)
3206
3207 /* Create an entry in a PPC ELF linker hash table. */
3208
3209 static struct bfd_hash_entry *
3210 ppc_elf_link_hash_newfunc (struct bfd_hash_entry *entry,
3211 struct bfd_hash_table *table,
3212 const char *string)
3213 {
3214 /* Allocate the structure if it has not already been allocated by a
3215 subclass. */
3216 if (entry == NULL)
3217 {
3218 entry = bfd_hash_allocate (table,
3219 sizeof (struct ppc_elf_link_hash_entry));
3220 if (entry == NULL)
3221 return entry;
3222 }
3223
3224 /* Call the allocation method of the superclass. */
3225 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
3226 if (entry != NULL)
3227 {
3228 ppc_elf_hash_entry (entry)->linker_section_pointer = NULL;
3229 ppc_elf_hash_entry (entry)->dyn_relocs = NULL;
3230 ppc_elf_hash_entry (entry)->tls_mask = 0;
3231 ppc_elf_hash_entry (entry)->has_sda_refs = 0;
3232 }
3233
3234 return entry;
3235 }
3236
3237 /* Create a PPC ELF linker hash table. */
3238
3239 static struct bfd_link_hash_table *
3240 ppc_elf_link_hash_table_create (bfd *abfd)
3241 {
3242 struct ppc_elf_link_hash_table *ret;
3243
3244 ret = bfd_zmalloc (sizeof (struct ppc_elf_link_hash_table));
3245 if (ret == NULL)
3246 return NULL;
3247
3248 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd,
3249 ppc_elf_link_hash_newfunc,
3250 sizeof (struct ppc_elf_link_hash_entry),
3251 PPC32_ELF_DATA))
3252 {
3253 free (ret);
3254 return NULL;
3255 }
3256
3257 ret->elf.init_plt_refcount.refcount = 0;
3258 ret->elf.init_plt_refcount.glist = NULL;
3259 ret->elf.init_plt_offset.offset = 0;
3260 ret->elf.init_plt_offset.glist = NULL;
3261
3262 ret->sdata[0].name = ".sdata";
3263 ret->sdata[0].sym_name = "_SDA_BASE_";
3264 ret->sdata[0].bss_name = ".sbss";
3265
3266 ret->sdata[1].name = ".sdata2";
3267 ret->sdata[1].sym_name = "_SDA2_BASE_";
3268 ret->sdata[1].bss_name = ".sbss2";
3269
3270 ret->plt_entry_size = 12;
3271 ret->plt_slot_size = 8;
3272 ret->plt_initial_entry_size = 72;
3273
3274 return &ret->elf.root;
3275 }
3276
3277 /* Create .got and the related sections. */
3278
3279 static bfd_boolean
3280 ppc_elf_create_got (bfd *abfd, struct bfd_link_info *info)
3281 {
3282 struct ppc_elf_link_hash_table *htab;
3283 asection *s;
3284 flagword flags;
3285
3286 if (!_bfd_elf_create_got_section (abfd, info))
3287 return FALSE;
3288
3289 htab = ppc_elf_hash_table (info);
3290 htab->got = s = bfd_get_linker_section (abfd, ".got");
3291 if (s == NULL)
3292 abort ();
3293
3294 if (htab->is_vxworks)
3295 {
3296 htab->sgotplt = bfd_get_linker_section (abfd, ".got.plt");
3297 if (!htab->sgotplt)
3298 abort ();
3299 }
3300 else
3301 {
3302 /* The powerpc .got has a blrl instruction in it. Mark it
3303 executable. */
3304 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS
3305 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3306 if (!bfd_set_section_flags (abfd, s, flags))
3307 return FALSE;
3308 }
3309
3310 htab->relgot = bfd_get_linker_section (abfd, ".rela.got");
3311 if (!htab->relgot)
3312 abort ();
3313
3314 return TRUE;
3315 }
3316
3317 static bfd_boolean
3318 ppc_elf_create_glink (bfd *abfd, struct bfd_link_info *info)
3319 {
3320 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
3321 asection *s;
3322 flagword flags;
3323
3324 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY | SEC_HAS_CONTENTS
3325 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3326 s = bfd_make_section_anyway_with_flags (abfd, ".glink", flags);
3327 htab->glink = s;
3328 if (s == NULL
3329 || !bfd_set_section_alignment (abfd, s, 4))
3330 return FALSE;
3331
3332 if (!info->no_ld_generated_unwind_info)
3333 {
3334 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
3335 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3336 s = bfd_make_section_anyway_with_flags (abfd, ".eh_frame", flags);
3337 htab->glink_eh_frame = s;
3338 if (s == NULL
3339 || !bfd_set_section_alignment (abfd, s, 2))
3340 return FALSE;
3341 }
3342
3343 flags = SEC_ALLOC | SEC_LINKER_CREATED;
3344 s = bfd_make_section_anyway_with_flags (abfd, ".iplt", flags);
3345 htab->iplt = s;
3346 if (s == NULL
3347 || !bfd_set_section_alignment (abfd, s, 4))
3348 return FALSE;
3349
3350 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
3351 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3352 s = bfd_make_section_anyway_with_flags (abfd, ".rela.iplt", flags);
3353 htab->reliplt = s;
3354 if (s == NULL
3355 || ! bfd_set_section_alignment (abfd, s, 2))
3356 return FALSE;
3357 return TRUE;
3358 }
3359
3360 /* We have to create .dynsbss and .rela.sbss here so that they get mapped
3361 to output sections (just like _bfd_elf_create_dynamic_sections has
3362 to create .dynbss and .rela.bss). */
3363
3364 static bfd_boolean
3365 ppc_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
3366 {
3367 struct ppc_elf_link_hash_table *htab;
3368 asection *s;
3369 flagword flags;
3370
3371 htab = ppc_elf_hash_table (info);
3372
3373 if (htab->got == NULL
3374 && !ppc_elf_create_got (abfd, info))
3375 return FALSE;
3376
3377 if (!_bfd_elf_create_dynamic_sections (abfd, info))
3378 return FALSE;
3379
3380 if (htab->glink == NULL
3381 && !ppc_elf_create_glink (abfd, info))
3382 return FALSE;
3383
3384 htab->dynbss = bfd_get_linker_section (abfd, ".dynbss");
3385 s = bfd_make_section_anyway_with_flags (abfd, ".dynsbss",
3386 SEC_ALLOC | SEC_LINKER_CREATED);
3387 htab->dynsbss = s;
3388 if (s == NULL)
3389 return FALSE;
3390
3391 if (! info->shared)
3392 {
3393 htab->relbss = bfd_get_linker_section (abfd, ".rela.bss");
3394 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
3395 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3396 s = bfd_make_section_anyway_with_flags (abfd, ".rela.sbss", flags);
3397 htab->relsbss = s;
3398 if (s == NULL
3399 || ! bfd_set_section_alignment (abfd, s, 2))
3400 return FALSE;
3401 }
3402
3403 if (htab->is_vxworks
3404 && !elf_vxworks_create_dynamic_sections (abfd, info, &htab->srelplt2))
3405 return FALSE;
3406
3407 htab->relplt = bfd_get_linker_section (abfd, ".rela.plt");
3408 htab->plt = s = bfd_get_linker_section (abfd, ".plt");
3409 if (s == NULL)
3410 abort ();
3411
3412 flags = SEC_ALLOC | SEC_CODE | SEC_LINKER_CREATED;
3413 if (htab->plt_type == PLT_VXWORKS)
3414 /* The VxWorks PLT is a loaded section with contents. */
3415 flags |= SEC_HAS_CONTENTS | SEC_LOAD | SEC_READONLY;
3416 return bfd_set_section_flags (abfd, s, flags);
3417 }
3418
3419 /* Copy the extra info we tack onto an elf_link_hash_entry. */
3420
3421 static void
3422 ppc_elf_copy_indirect_symbol (struct bfd_link_info *info,
3423 struct elf_link_hash_entry *dir,
3424 struct elf_link_hash_entry *ind)
3425 {
3426 struct ppc_elf_link_hash_entry *edir, *eind;
3427
3428 edir = (struct ppc_elf_link_hash_entry *) dir;
3429 eind = (struct ppc_elf_link_hash_entry *) ind;
3430
3431 edir->tls_mask |= eind->tls_mask;
3432 edir->has_sda_refs |= eind->has_sda_refs;
3433
3434 /* If called to transfer flags for a weakdef during processing
3435 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
3436 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
3437 if (!(ELIMINATE_COPY_RELOCS
3438 && eind->elf.root.type != bfd_link_hash_indirect
3439 && edir->elf.dynamic_adjusted))
3440 edir->elf.non_got_ref |= eind->elf.non_got_ref;
3441
3442 edir->elf.ref_dynamic |= eind->elf.ref_dynamic;
3443 edir->elf.ref_regular |= eind->elf.ref_regular;
3444 edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak;
3445 edir->elf.needs_plt |= eind->elf.needs_plt;
3446 edir->elf.pointer_equality_needed |= eind->elf.pointer_equality_needed;
3447
3448 if (eind->dyn_relocs != NULL)
3449 {
3450 if (edir->dyn_relocs != NULL)
3451 {
3452 struct elf_dyn_relocs **pp;
3453 struct elf_dyn_relocs *p;
3454
3455 /* Add reloc counts against the indirect sym to the direct sym
3456 list. Merge any entries against the same section. */
3457 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
3458 {
3459 struct elf_dyn_relocs *q;
3460
3461 for (q = edir->dyn_relocs; q != NULL; q = q->next)
3462 if (q->sec == p->sec)
3463 {
3464 q->pc_count += p->pc_count;
3465 q->count += p->count;
3466 *pp = p->next;
3467 break;
3468 }
3469 if (q == NULL)
3470 pp = &p->next;
3471 }
3472 *pp = edir->dyn_relocs;
3473 }
3474
3475 edir->dyn_relocs = eind->dyn_relocs;
3476 eind->dyn_relocs = NULL;
3477 }
3478
3479 /* If we were called to copy over info for a weak sym, that's all.
3480 You might think dyn_relocs need not be copied over; After all,
3481 both syms will be dynamic or both non-dynamic so we're just
3482 moving reloc accounting around. However, ELIMINATE_COPY_RELOCS
3483 code in ppc_elf_adjust_dynamic_symbol needs to check for
3484 dyn_relocs in read-only sections, and it does so on what is the
3485 DIR sym here. */
3486 if (eind->elf.root.type != bfd_link_hash_indirect)
3487 return;
3488
3489 /* Copy over the GOT refcount entries that we may have already seen to
3490 the symbol which just became indirect. */
3491 edir->elf.got.refcount += eind->elf.got.refcount;
3492 eind->elf.got.refcount = 0;
3493
3494 /* And plt entries. */
3495 if (eind->elf.plt.plist != NULL)
3496 {
3497 if (edir->elf.plt.plist != NULL)
3498 {
3499 struct plt_entry **entp;
3500 struct plt_entry *ent;
3501
3502 for (entp = &eind->elf.plt.plist; (ent = *entp) != NULL; )
3503 {
3504 struct plt_entry *dent;
3505
3506 for (dent = edir->elf.plt.plist; dent != NULL; dent = dent->next)
3507 if (dent->sec == ent->sec && dent->addend == ent->addend)
3508 {
3509 dent->plt.refcount += ent->plt.refcount;
3510 *entp = ent->next;
3511 break;
3512 }
3513 if (dent == NULL)
3514 entp = &ent->next;
3515 }
3516 *entp = edir->elf.plt.plist;
3517 }
3518
3519 edir->elf.plt.plist = eind->elf.plt.plist;
3520 eind->elf.plt.plist = NULL;
3521 }
3522
3523 if (eind->elf.dynindx != -1)
3524 {
3525 if (edir->elf.dynindx != -1)
3526 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
3527 edir->elf.dynstr_index);
3528 edir->elf.dynindx = eind->elf.dynindx;
3529 edir->elf.dynstr_index = eind->elf.dynstr_index;
3530 eind->elf.dynindx = -1;
3531 eind->elf.dynstr_index = 0;
3532 }
3533 }
3534
3535 /* Hook called by the linker routine which adds symbols from an object
3536 file. We use it to put .comm items in .sbss, and not .bss. */
3537
3538 static bfd_boolean
3539 ppc_elf_add_symbol_hook (bfd *abfd,
3540 struct bfd_link_info *info,
3541 Elf_Internal_Sym *sym,
3542 const char **namep ATTRIBUTE_UNUSED,
3543 flagword *flagsp ATTRIBUTE_UNUSED,
3544 asection **secp,
3545 bfd_vma *valp)
3546 {
3547 if (sym->st_shndx == SHN_COMMON
3548 && !info->relocatable
3549 && is_ppc_elf (info->output_bfd)
3550 && sym->st_size <= elf_gp_size (abfd))
3551 {
3552 /* Common symbols less than or equal to -G nn bytes are automatically
3553 put into .sbss. */
3554 struct ppc_elf_link_hash_table *htab;
3555
3556 htab = ppc_elf_hash_table (info);
3557 if (htab->sbss == NULL)
3558 {
3559 flagword flags = SEC_IS_COMMON | SEC_LINKER_CREATED;
3560
3561 if (!htab->elf.dynobj)
3562 htab->elf.dynobj = abfd;
3563
3564 htab->sbss = bfd_make_section_anyway_with_flags (htab->elf.dynobj,
3565 ".sbss",
3566 flags);
3567 if (htab->sbss == NULL)
3568 return FALSE;
3569 }
3570
3571 *secp = htab->sbss;
3572 *valp = sym->st_size;
3573 }
3574
3575 if ((abfd->flags & DYNAMIC) == 0
3576 && (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC
3577 || ELF_ST_BIND (sym->st_info) == STB_GNU_UNIQUE))
3578 elf_tdata (info->output_bfd)->has_gnu_symbols = TRUE;
3579
3580 return TRUE;
3581 }
3582 \f
3583 static bfd_boolean
3584 create_sdata_sym (struct bfd_link_info *info, elf_linker_section_t *lsect)
3585 {
3586 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
3587
3588 lsect->sym = elf_link_hash_lookup (&htab->elf, lsect->sym_name,
3589 TRUE, FALSE, TRUE);
3590 if (lsect->sym == NULL)
3591 return FALSE;
3592 if (lsect->sym->root.type == bfd_link_hash_new)
3593 lsect->sym->non_elf = 0;
3594 lsect->sym->ref_regular = 1;
3595 _bfd_elf_link_hash_hide_symbol (info, lsect->sym, TRUE);
3596 return TRUE;
3597 }
3598
3599 /* Create a special linker section. */
3600
3601 static bfd_boolean
3602 ppc_elf_create_linker_section (bfd *abfd,
3603 struct bfd_link_info *info,
3604 flagword flags,
3605 elf_linker_section_t *lsect)
3606 {
3607 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
3608 asection *s;
3609
3610 flags |= (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
3611 | SEC_LINKER_CREATED);
3612
3613 /* Record the first bfd that needs the special sections. */
3614 if (!htab->elf.dynobj)
3615 htab->elf.dynobj = abfd;
3616
3617 s = bfd_make_section_anyway_with_flags (htab->elf.dynobj,
3618 lsect->name,
3619 flags);
3620 if (s == NULL
3621 || !bfd_set_section_alignment (htab->elf.dynobj, s, 2))
3622 return FALSE;
3623 lsect->section = s;
3624
3625 return create_sdata_sym (info, lsect);
3626 }
3627
3628 /* Find a linker generated pointer with a given addend and type. */
3629
3630 static elf_linker_section_pointers_t *
3631 elf_find_pointer_linker_section
3632 (elf_linker_section_pointers_t *linker_pointers,
3633 bfd_vma addend,
3634 elf_linker_section_t *lsect)
3635 {
3636 for ( ; linker_pointers != NULL; linker_pointers = linker_pointers->next)
3637 if (lsect == linker_pointers->lsect && addend == linker_pointers->addend)
3638 return linker_pointers;
3639
3640 return NULL;
3641 }
3642
3643 /* Allocate a pointer to live in a linker created section. */
3644
3645 static bfd_boolean
3646 elf_create_pointer_linker_section (bfd *abfd,
3647 elf_linker_section_t *lsect,
3648 struct elf_link_hash_entry *h,
3649 const Elf_Internal_Rela *rel)
3650 {
3651 elf_linker_section_pointers_t **ptr_linker_section_ptr = NULL;
3652 elf_linker_section_pointers_t *linker_section_ptr;
3653 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
3654 bfd_size_type amt;
3655
3656 BFD_ASSERT (lsect != NULL);
3657
3658 /* Is this a global symbol? */
3659 if (h != NULL)
3660 {
3661 struct ppc_elf_link_hash_entry *eh;
3662
3663 /* Has this symbol already been allocated? If so, our work is done. */
3664 eh = (struct ppc_elf_link_hash_entry *) h;
3665 if (elf_find_pointer_linker_section (eh->linker_section_pointer,
3666 rel->r_addend,
3667 lsect))
3668 return TRUE;
3669
3670 ptr_linker_section_ptr = &eh->linker_section_pointer;
3671 }
3672 else
3673 {
3674 BFD_ASSERT (is_ppc_elf (abfd));
3675
3676 /* Allocation of a pointer to a local symbol. */
3677 elf_linker_section_pointers_t **ptr = elf_local_ptr_offsets (abfd);
3678
3679 /* Allocate a table to hold the local symbols if first time. */
3680 if (!ptr)
3681 {
3682 unsigned int num_symbols = elf_symtab_hdr (abfd).sh_info;
3683
3684 amt = num_symbols;
3685 amt *= sizeof (elf_linker_section_pointers_t *);
3686 ptr = bfd_zalloc (abfd, amt);
3687
3688 if (!ptr)
3689 return FALSE;
3690
3691 elf_local_ptr_offsets (abfd) = ptr;
3692 }
3693
3694 /* Has this symbol already been allocated? If so, our work is done. */
3695 if (elf_find_pointer_linker_section (ptr[r_symndx],
3696 rel->r_addend,
3697 lsect))
3698 return TRUE;
3699
3700 ptr_linker_section_ptr = &ptr[r_symndx];
3701 }
3702
3703 /* Allocate space for a pointer in the linker section, and allocate
3704 a new pointer record from internal memory. */
3705 BFD_ASSERT (ptr_linker_section_ptr != NULL);
3706 amt = sizeof (elf_linker_section_pointers_t);
3707 linker_section_ptr = bfd_alloc (abfd, amt);
3708
3709 if (!linker_section_ptr)
3710 return FALSE;
3711
3712 linker_section_ptr->next = *ptr_linker_section_ptr;
3713 linker_section_ptr->addend = rel->r_addend;
3714 linker_section_ptr->lsect = lsect;
3715 *ptr_linker_section_ptr = linker_section_ptr;
3716
3717 linker_section_ptr->offset = lsect->section->size;
3718 lsect->section->size += 4;
3719
3720 #ifdef DEBUG
3721 fprintf (stderr,
3722 "Create pointer in linker section %s, offset = %ld, section size = %ld\n",
3723 lsect->name, (long) linker_section_ptr->offset,
3724 (long) lsect->section->size);
3725 #endif
3726
3727 return TRUE;
3728 }
3729
3730 static struct plt_entry **
3731 update_local_sym_info (bfd *abfd,
3732 Elf_Internal_Shdr *symtab_hdr,
3733 unsigned long r_symndx,
3734 int tls_type)
3735 {
3736 bfd_signed_vma *local_got_refcounts = elf_local_got_refcounts (abfd);
3737 struct plt_entry **local_plt;
3738 char *local_got_tls_masks;
3739
3740 if (local_got_refcounts == NULL)
3741 {
3742 bfd_size_type size = symtab_hdr->sh_info;
3743
3744 size *= (sizeof (*local_got_refcounts)
3745 + sizeof (*local_plt)
3746 + sizeof (*local_got_tls_masks));
3747 local_got_refcounts = bfd_zalloc (abfd, size);
3748 if (local_got_refcounts == NULL)
3749 return NULL;
3750 elf_local_got_refcounts (abfd) = local_got_refcounts;
3751 }
3752
3753 local_plt = (struct plt_entry **) (local_got_refcounts + symtab_hdr->sh_info);
3754 local_got_tls_masks = (char *) (local_plt + symtab_hdr->sh_info);
3755 local_got_tls_masks[r_symndx] |= tls_type;
3756 if (tls_type != PLT_IFUNC)
3757 local_got_refcounts[r_symndx] += 1;
3758 return local_plt + r_symndx;
3759 }
3760
3761 static bfd_boolean
3762 update_plt_info (bfd *abfd, struct plt_entry **plist,
3763 asection *sec, bfd_vma addend)
3764 {
3765 struct plt_entry *ent;
3766
3767 if (addend < 32768)
3768 sec = NULL;
3769 for (ent = *plist; ent != NULL; ent = ent->next)
3770 if (ent->sec == sec && ent->addend == addend)
3771 break;
3772 if (ent == NULL)
3773 {
3774 bfd_size_type amt = sizeof (*ent);
3775 ent = bfd_alloc (abfd, amt);
3776 if (ent == NULL)
3777 return FALSE;
3778 ent->next = *plist;
3779 ent->sec = sec;
3780 ent->addend = addend;
3781 ent->plt.refcount = 0;
3782 *plist = ent;
3783 }
3784 ent->plt.refcount += 1;
3785 return TRUE;
3786 }
3787
3788 static struct plt_entry *
3789 find_plt_ent (struct plt_entry **plist, asection *sec, bfd_vma addend)
3790 {
3791 struct plt_entry *ent;
3792
3793 if (addend < 32768)
3794 sec = NULL;
3795 for (ent = *plist; ent != NULL; ent = ent->next)
3796 if (ent->sec == sec && ent->addend == addend)
3797 break;
3798 return ent;
3799 }
3800
3801 static bfd_boolean
3802 is_branch_reloc (enum elf_ppc_reloc_type r_type)
3803 {
3804 return (r_type == R_PPC_PLTREL24
3805 || r_type == R_PPC_LOCAL24PC
3806 || r_type == R_PPC_REL24
3807 || r_type == R_PPC_REL14
3808 || r_type == R_PPC_REL14_BRTAKEN
3809 || r_type == R_PPC_REL14_BRNTAKEN
3810 || r_type == R_PPC_ADDR24
3811 || r_type == R_PPC_ADDR14
3812 || r_type == R_PPC_ADDR14_BRTAKEN
3813 || r_type == R_PPC_ADDR14_BRNTAKEN);
3814 }
3815
3816 static void
3817 bad_shared_reloc (bfd *abfd, enum elf_ppc_reloc_type r_type)
3818 {
3819 (*_bfd_error_handler)
3820 (_("%B: relocation %s cannot be used when making a shared object"),
3821 abfd,
3822 ppc_elf_howto_table[r_type]->name);
3823 bfd_set_error (bfd_error_bad_value);
3824 }
3825
3826 /* Look through the relocs for a section during the first phase, and
3827 allocate space in the global offset table or procedure linkage
3828 table. */
3829
3830 static bfd_boolean
3831 ppc_elf_check_relocs (bfd *abfd,
3832 struct bfd_link_info *info,
3833 asection *sec,
3834 const Elf_Internal_Rela *relocs)
3835 {
3836 struct ppc_elf_link_hash_table *htab;
3837 Elf_Internal_Shdr *symtab_hdr;
3838 struct elf_link_hash_entry **sym_hashes;
3839 const Elf_Internal_Rela *rel;
3840 const Elf_Internal_Rela *rel_end;
3841 asection *got2, *sreloc;
3842 struct elf_link_hash_entry *tga;
3843
3844 if (info->relocatable)
3845 return TRUE;
3846
3847 /* Don't do anything special with non-loaded, non-alloced sections.
3848 In particular, any relocs in such sections should not affect GOT
3849 and PLT reference counting (ie. we don't allow them to create GOT
3850 or PLT entries), there's no possibility or desire to optimize TLS
3851 relocs, and there's not much point in propagating relocs to shared
3852 libs that the dynamic linker won't relocate. */
3853 if ((sec->flags & SEC_ALLOC) == 0)
3854 return TRUE;
3855
3856 #ifdef DEBUG
3857 _bfd_error_handler ("ppc_elf_check_relocs called for section %A in %B",
3858 sec, abfd);
3859 #endif
3860
3861 BFD_ASSERT (is_ppc_elf (abfd));
3862
3863 /* Initialize howto table if not already done. */
3864 if (!ppc_elf_howto_table[R_PPC_ADDR32])
3865 ppc_elf_howto_init ();
3866
3867 htab = ppc_elf_hash_table (info);
3868 if (htab->glink == NULL)
3869 {
3870 if (htab->elf.dynobj == NULL)
3871 htab->elf.dynobj = abfd;
3872 if (!ppc_elf_create_glink (htab->elf.dynobj, info))
3873 return FALSE;
3874 }
3875 tga = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
3876 FALSE, FALSE, TRUE);
3877 symtab_hdr = &elf_symtab_hdr (abfd);
3878 sym_hashes = elf_sym_hashes (abfd);
3879 got2 = bfd_get_section_by_name (abfd, ".got2");
3880 sreloc = NULL;
3881
3882 rel_end = relocs + sec->reloc_count;
3883 for (rel = relocs; rel < rel_end; rel++)
3884 {
3885 unsigned long r_symndx;
3886 enum elf_ppc_reloc_type r_type;
3887 struct elf_link_hash_entry *h;
3888 int tls_type;
3889
3890 r_symndx = ELF32_R_SYM (rel->r_info);
3891 if (r_symndx < symtab_hdr->sh_info)
3892 h = NULL;
3893 else
3894 {
3895 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3896 while (h->root.type == bfd_link_hash_indirect
3897 || h->root.type == bfd_link_hash_warning)
3898 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3899 }
3900
3901 /* If a relocation refers to _GLOBAL_OFFSET_TABLE_, create the .got.
3902 This shows up in particular in an R_PPC_ADDR32 in the eabi
3903 startup code. */
3904 if (h != NULL
3905 && htab->got == NULL
3906 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
3907 {
3908 if (htab->elf.dynobj == NULL)
3909 htab->elf.dynobj = abfd;
3910 if (!ppc_elf_create_got (htab->elf.dynobj, info))
3911 return FALSE;
3912 BFD_ASSERT (h == htab->elf.hgot);
3913 }
3914
3915 tls_type = 0;
3916 r_type = ELF32_R_TYPE (rel->r_info);
3917 if (h == NULL && !htab->is_vxworks)
3918 {
3919 Elf_Internal_Sym *isym = bfd_sym_from_r_symndx (&htab->sym_cache,
3920 abfd, r_symndx);
3921 if (isym == NULL)
3922 return FALSE;
3923
3924 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC
3925 && (!info->shared
3926 || is_branch_reloc (r_type)))
3927 {
3928 struct plt_entry **ifunc;
3929 bfd_vma addend;
3930
3931 ifunc = update_local_sym_info (abfd, symtab_hdr, r_symndx,
3932 PLT_IFUNC);
3933 if (ifunc == NULL)
3934 return FALSE;
3935
3936 /* STT_GNU_IFUNC symbols must have a PLT entry;
3937 In a non-pie executable even when there are
3938 no plt calls. */
3939 addend = 0;
3940 if (r_type == R_PPC_PLTREL24)
3941 {
3942 ppc_elf_tdata (abfd)->makes_plt_call = 1;
3943 if (info->shared)
3944 addend = rel->r_addend;
3945 }
3946 if (!update_plt_info (abfd, ifunc, got2, addend))
3947 return FALSE;
3948 }
3949 }
3950
3951 if (!htab->is_vxworks
3952 && is_branch_reloc (r_type)
3953 && h != NULL
3954 && h == tga)
3955 {
3956 if (rel != relocs
3957 && (ELF32_R_TYPE (rel[-1].r_info) == R_PPC_TLSGD
3958 || ELF32_R_TYPE (rel[-1].r_info) == R_PPC_TLSLD))
3959 /* We have a new-style __tls_get_addr call with a marker
3960 reloc. */
3961 ;
3962 else
3963 /* Mark this section as having an old-style call. */
3964 sec->has_tls_get_addr_call = 1;
3965 }
3966
3967 switch (r_type)
3968 {
3969 case R_PPC_TLSGD:
3970 case R_PPC_TLSLD:
3971 /* These special tls relocs tie a call to __tls_get_addr with
3972 its parameter symbol. */
3973 break;
3974
3975 case R_PPC_GOT_TLSLD16:
3976 case R_PPC_GOT_TLSLD16_LO:
3977 case R_PPC_GOT_TLSLD16_HI:
3978 case R_PPC_GOT_TLSLD16_HA:
3979 tls_type = TLS_TLS | TLS_LD;
3980 goto dogottls;
3981
3982 case R_PPC_GOT_TLSGD16:
3983 case R_PPC_GOT_TLSGD16_LO:
3984 case R_PPC_GOT_TLSGD16_HI:
3985 case R_PPC_GOT_TLSGD16_HA:
3986 tls_type = TLS_TLS | TLS_GD;
3987 goto dogottls;
3988
3989 case R_PPC_GOT_TPREL16:
3990 case R_PPC_GOT_TPREL16_LO:
3991 case R_PPC_GOT_TPREL16_HI:
3992 case R_PPC_GOT_TPREL16_HA:
3993 if (!info->executable)
3994 info->flags |= DF_STATIC_TLS;
3995 tls_type = TLS_TLS | TLS_TPREL;
3996 goto dogottls;
3997
3998 case R_PPC_GOT_DTPREL16:
3999 case R_PPC_GOT_DTPREL16_LO:
4000 case R_PPC_GOT_DTPREL16_HI:
4001 case R_PPC_GOT_DTPREL16_HA:
4002 tls_type = TLS_TLS | TLS_DTPREL;
4003 dogottls:
4004 sec->has_tls_reloc = 1;
4005 /* Fall thru */
4006
4007 /* GOT16 relocations */
4008 case R_PPC_GOT16:
4009 case R_PPC_GOT16_LO:
4010 case R_PPC_GOT16_HI:
4011 case R_PPC_GOT16_HA:
4012 /* This symbol requires a global offset table entry. */
4013 if (htab->got == NULL)
4014 {
4015 if (htab->elf.dynobj == NULL)
4016 htab->elf.dynobj = abfd;
4017 if (!ppc_elf_create_got (htab->elf.dynobj, info))
4018 return FALSE;
4019 }
4020 if (h != NULL)
4021 {
4022 h->got.refcount += 1;
4023 ppc_elf_hash_entry (h)->tls_mask |= tls_type;
4024 }
4025 else
4026 /* This is a global offset table entry for a local symbol. */
4027 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, tls_type))
4028 return FALSE;
4029
4030 /* We may also need a plt entry if the symbol turns out to be
4031 an ifunc. */
4032 if (h != NULL && !info->shared)
4033 {
4034 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
4035 return FALSE;
4036 }
4037 break;
4038
4039 /* Indirect .sdata relocation. */
4040 case R_PPC_EMB_SDAI16:
4041 if (info->shared)
4042 {
4043 bad_shared_reloc (abfd, r_type);
4044 return FALSE;
4045 }
4046 if (htab->sdata[0].section == NULL
4047 && !ppc_elf_create_linker_section (abfd, info, 0,
4048 &htab->sdata[0]))
4049 return FALSE;
4050 if (!elf_create_pointer_linker_section (abfd, &htab->sdata[0],
4051 h, rel))
4052 return FALSE;
4053 if (h != NULL)
4054 {
4055 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4056 h->non_got_ref = TRUE;
4057 }
4058 break;
4059
4060 /* Indirect .sdata2 relocation. */
4061 case R_PPC_EMB_SDA2I16:
4062 if (info->shared)
4063 {
4064 bad_shared_reloc (abfd, r_type);
4065 return FALSE;
4066 }
4067 if (htab->sdata[1].section == NULL
4068 && !ppc_elf_create_linker_section (abfd, info, SEC_READONLY,
4069 &htab->sdata[1]))
4070 return FALSE;
4071 if (!elf_create_pointer_linker_section (abfd, &htab->sdata[1],
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 case R_PPC_VLE_SDAREL_LO16A:
4082 case R_PPC_VLE_SDAREL_LO16D:
4083 case R_PPC_VLE_SDAREL_HI16A:
4084 case R_PPC_VLE_SDAREL_HI16D:
4085 case R_PPC_VLE_SDAREL_HA16A:
4086 case R_PPC_VLE_SDAREL_HA16D:
4087 case R_PPC_SDAREL16:
4088 if (htab->sdata[0].sym == NULL
4089 && !create_sdata_sym (info, &htab->sdata[0]))
4090 return FALSE;
4091
4092 if (htab->sdata[1].sym == NULL
4093 && !create_sdata_sym (info, &htab->sdata[1]))
4094 return FALSE;
4095
4096 if (h != NULL)
4097 {
4098 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4099 h->non_got_ref = TRUE;
4100 }
4101 break;
4102
4103 case R_PPC_VLE_REL8:
4104 case R_PPC_VLE_REL15:
4105 case R_PPC_VLE_REL24:
4106 case R_PPC_VLE_LO16A:
4107 case R_PPC_VLE_LO16D:
4108 case R_PPC_VLE_HI16A:
4109 case R_PPC_VLE_HI16D:
4110 case R_PPC_VLE_HA16A:
4111 case R_PPC_VLE_HA16D:
4112 break;
4113
4114 case R_PPC_EMB_SDA2REL:
4115 if (info->shared)
4116 {
4117 bad_shared_reloc (abfd, r_type);
4118 return FALSE;
4119 }
4120 if (htab->sdata[1].sym == NULL
4121 && !create_sdata_sym (info, &htab->sdata[1]))
4122 return FALSE;
4123 if (h != NULL)
4124 {
4125 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4126 h->non_got_ref = TRUE;
4127 }
4128 break;
4129
4130 case R_PPC_VLE_SDA21_LO:
4131 case R_PPC_VLE_SDA21:
4132 case R_PPC_EMB_SDA21:
4133 case R_PPC_EMB_RELSDA:
4134 if (info->shared)
4135 {
4136 bad_shared_reloc (abfd, r_type);
4137 return FALSE;
4138 }
4139 if (htab->sdata[0].sym == NULL
4140 && !create_sdata_sym (info, &htab->sdata[0]))
4141 return FALSE;
4142 if (htab->sdata[1].sym == NULL
4143 && !create_sdata_sym (info, &htab->sdata[1]))
4144 return FALSE;
4145 if (h != NULL)
4146 {
4147 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4148 h->non_got_ref = TRUE;
4149 }
4150 break;
4151
4152 case R_PPC_EMB_NADDR32:
4153 case R_PPC_EMB_NADDR16:
4154 case R_PPC_EMB_NADDR16_LO:
4155 case R_PPC_EMB_NADDR16_HI:
4156 case R_PPC_EMB_NADDR16_HA:
4157 if (info->shared)
4158 {
4159 bad_shared_reloc (abfd, r_type);
4160 return FALSE;
4161 }
4162 if (h != NULL)
4163 h->non_got_ref = TRUE;
4164 break;
4165
4166 case R_PPC_PLTREL24:
4167 if (h == NULL)
4168 break;
4169 /* Fall through */
4170 case R_PPC_PLT32:
4171 case R_PPC_PLTREL32:
4172 case R_PPC_PLT16_LO:
4173 case R_PPC_PLT16_HI:
4174 case R_PPC_PLT16_HA:
4175 #ifdef DEBUG
4176 fprintf (stderr, "Reloc requires a PLT entry\n");
4177 #endif
4178 /* This symbol requires a procedure linkage table entry. We
4179 actually build the entry in finish_dynamic_symbol,
4180 because this might be a case of linking PIC code without
4181 linking in any dynamic objects, in which case we don't
4182 need to generate a procedure linkage table after all. */
4183
4184 if (h == NULL)
4185 {
4186 /* It does not make sense to have a procedure linkage
4187 table entry for a local symbol. */
4188 info->callbacks->einfo (_("%P: %H: %s reloc against local symbol\n"),
4189 abfd, sec, rel->r_offset,
4190 ppc_elf_howto_table[r_type]->name);
4191 bfd_set_error (bfd_error_bad_value);
4192 return FALSE;
4193 }
4194 else
4195 {
4196 bfd_vma addend = 0;
4197
4198 if (r_type == R_PPC_PLTREL24)
4199 {
4200 ppc_elf_tdata (abfd)->makes_plt_call = 1;
4201 if (info->shared)
4202 addend = rel->r_addend;
4203 }
4204 h->needs_plt = 1;
4205 if (!update_plt_info (abfd, &h->plt.plist, got2, addend))
4206 return FALSE;
4207 }
4208 break;
4209
4210 /* The following relocations don't need to propagate the
4211 relocation if linking a shared object since they are
4212 section relative. */
4213 case R_PPC_SECTOFF:
4214 case R_PPC_SECTOFF_LO:
4215 case R_PPC_SECTOFF_HI:
4216 case R_PPC_SECTOFF_HA:
4217 case R_PPC_DTPREL16:
4218 case R_PPC_DTPREL16_LO:
4219 case R_PPC_DTPREL16_HI:
4220 case R_PPC_DTPREL16_HA:
4221 case R_PPC_TOC16:
4222 break;
4223
4224 case R_PPC_REL16:
4225 case R_PPC_REL16_LO:
4226 case R_PPC_REL16_HI:
4227 case R_PPC_REL16_HA:
4228 ppc_elf_tdata (abfd)->has_rel16 = 1;
4229 break;
4230
4231 /* These are just markers. */
4232 case R_PPC_TLS:
4233 case R_PPC_EMB_MRKREF:
4234 case R_PPC_NONE:
4235 case R_PPC_max:
4236 case R_PPC_RELAX:
4237 case R_PPC_RELAX_PLT:
4238 case R_PPC_RELAX_PLTREL24:
4239 break;
4240
4241 /* These should only appear in dynamic objects. */
4242 case R_PPC_COPY:
4243 case R_PPC_GLOB_DAT:
4244 case R_PPC_JMP_SLOT:
4245 case R_PPC_RELATIVE:
4246 case R_PPC_IRELATIVE:
4247 break;
4248
4249 /* These aren't handled yet. We'll report an error later. */
4250 case R_PPC_ADDR30:
4251 case R_PPC_EMB_RELSEC16:
4252 case R_PPC_EMB_RELST_LO:
4253 case R_PPC_EMB_RELST_HI:
4254 case R_PPC_EMB_RELST_HA:
4255 case R_PPC_EMB_BIT_FLD:
4256 break;
4257
4258 /* This refers only to functions defined in the shared library. */
4259 case R_PPC_LOCAL24PC:
4260 if (h != NULL && h == htab->elf.hgot && htab->plt_type == PLT_UNSET)
4261 {
4262 htab->plt_type = PLT_OLD;
4263 htab->old_bfd = abfd;
4264 }
4265 break;
4266
4267 /* This relocation describes the C++ object vtable hierarchy.
4268 Reconstruct it for later use during GC. */
4269 case R_PPC_GNU_VTINHERIT:
4270 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
4271 return FALSE;
4272 break;
4273
4274 /* This relocation describes which C++ vtable entries are actually
4275 used. Record for later use during GC. */
4276 case R_PPC_GNU_VTENTRY:
4277 BFD_ASSERT (h != NULL);
4278 if (h != NULL
4279 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
4280 return FALSE;
4281 break;
4282
4283 /* We shouldn't really be seeing these. */
4284 case R_PPC_TPREL32:
4285 case R_PPC_TPREL16:
4286 case R_PPC_TPREL16_LO:
4287 case R_PPC_TPREL16_HI:
4288 case R_PPC_TPREL16_HA:
4289 if (!info->executable)
4290 info->flags |= DF_STATIC_TLS;
4291 goto dodyn;
4292
4293 /* Nor these. */
4294 case R_PPC_DTPMOD32:
4295 case R_PPC_DTPREL32:
4296 goto dodyn;
4297
4298 case R_PPC_REL32:
4299 if (h == NULL
4300 && got2 != NULL
4301 && (sec->flags & SEC_CODE) != 0
4302 && info->shared
4303 && htab->plt_type == PLT_UNSET)
4304 {
4305 /* Old -fPIC gcc code has .long LCTOC1-LCFx just before
4306 the start of a function, which assembles to a REL32
4307 reference to .got2. If we detect one of these, then
4308 force the old PLT layout because the linker cannot
4309 reliably deduce the GOT pointer value needed for
4310 PLT call stubs. */
4311 asection *s;
4312 Elf_Internal_Sym *isym;
4313
4314 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
4315 abfd, r_symndx);
4316 if (isym == NULL)
4317 return FALSE;
4318
4319 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
4320 if (s == got2)
4321 {
4322 htab->plt_type = PLT_OLD;
4323 htab->old_bfd = abfd;
4324 }
4325 }
4326 if (h == NULL || h == htab->elf.hgot)
4327 break;
4328 /* fall through */
4329
4330 case R_PPC_ADDR32:
4331 case R_PPC_ADDR16:
4332 case R_PPC_ADDR16_LO:
4333 case R_PPC_ADDR16_HI:
4334 case R_PPC_ADDR16_HA:
4335 case R_PPC_UADDR32:
4336 case R_PPC_UADDR16:
4337 if (h != NULL && !info->shared)
4338 {
4339 /* We may need a plt entry if the symbol turns out to be
4340 a function defined in a dynamic object. */
4341 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
4342 return FALSE;
4343
4344 /* We may need a copy reloc too. */
4345 h->non_got_ref = 1;
4346 h->pointer_equality_needed = 1;
4347 }
4348 goto dodyn;
4349
4350 case R_PPC_REL24:
4351 case R_PPC_REL14:
4352 case R_PPC_REL14_BRTAKEN:
4353 case R_PPC_REL14_BRNTAKEN:
4354 if (h == NULL)
4355 break;
4356 if (h == htab->elf.hgot)
4357 {
4358 if (htab->plt_type == PLT_UNSET)
4359 {
4360 htab->plt_type = PLT_OLD;
4361 htab->old_bfd = abfd;
4362 }
4363 break;
4364 }
4365 /* fall through */
4366
4367 case R_PPC_ADDR24:
4368 case R_PPC_ADDR14:
4369 case R_PPC_ADDR14_BRTAKEN:
4370 case R_PPC_ADDR14_BRNTAKEN:
4371 if (h != NULL && !info->shared)
4372 {
4373 /* We may need a plt entry if the symbol turns out to be
4374 a function defined in a dynamic object. */
4375 h->needs_plt = 1;
4376 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
4377 return FALSE;
4378 break;
4379 }
4380
4381 dodyn:
4382 /* If we are creating a shared library, and this is a reloc
4383 against a global symbol, or a non PC relative reloc
4384 against a local symbol, then we need to copy the reloc
4385 into the shared library. However, if we are linking with
4386 -Bsymbolic, we do not need to copy a reloc against a
4387 global symbol which is defined in an object we are
4388 including in the link (i.e., DEF_REGULAR is set). At
4389 this point we have not seen all the input files, so it is
4390 possible that DEF_REGULAR is not set now but will be set
4391 later (it is never cleared). In case of a weak definition,
4392 DEF_REGULAR may be cleared later by a strong definition in
4393 a shared library. We account for that possibility below by
4394 storing information in the dyn_relocs field of the hash
4395 table entry. A similar situation occurs when creating
4396 shared libraries and symbol visibility changes render the
4397 symbol local.
4398
4399 If on the other hand, we are creating an executable, we
4400 may need to keep relocations for symbols satisfied by a
4401 dynamic library if we manage to avoid copy relocs for the
4402 symbol. */
4403 if ((info->shared
4404 && (must_be_dyn_reloc (info, r_type)
4405 || (h != NULL
4406 && (! info->symbolic
4407 || h->root.type == bfd_link_hash_defweak
4408 || !h->def_regular))))
4409 || (ELIMINATE_COPY_RELOCS
4410 && !info->shared
4411 && h != NULL
4412 && (h->root.type == bfd_link_hash_defweak
4413 || !h->def_regular)))
4414 {
4415 struct elf_dyn_relocs *p;
4416 struct elf_dyn_relocs **rel_head;
4417
4418 #ifdef DEBUG
4419 fprintf (stderr,
4420 "ppc_elf_check_relocs needs to "
4421 "create relocation for %s\n",
4422 (h && h->root.root.string
4423 ? h->root.root.string : "<unknown>"));
4424 #endif
4425 if (sreloc == NULL)
4426 {
4427 if (htab->elf.dynobj == NULL)
4428 htab->elf.dynobj = abfd;
4429
4430 sreloc = _bfd_elf_make_dynamic_reloc_section
4431 (sec, htab->elf.dynobj, 2, abfd, /*rela?*/ TRUE);
4432
4433 if (sreloc == NULL)
4434 return FALSE;
4435 }
4436
4437 /* If this is a global symbol, we count the number of
4438 relocations we need for this symbol. */
4439 if (h != NULL)
4440 {
4441 rel_head = &ppc_elf_hash_entry (h)->dyn_relocs;
4442 }
4443 else
4444 {
4445 /* Track dynamic relocs needed for local syms too.
4446 We really need local syms available to do this
4447 easily. Oh well. */
4448 asection *s;
4449 void *vpp;
4450 Elf_Internal_Sym *isym;
4451
4452 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
4453 abfd, r_symndx);
4454 if (isym == NULL)
4455 return FALSE;
4456
4457 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
4458 if (s == NULL)
4459 s = sec;
4460
4461 vpp = &elf_section_data (s)->local_dynrel;
4462 rel_head = (struct elf_dyn_relocs **) vpp;
4463 }
4464
4465 p = *rel_head;
4466 if (p == NULL || p->sec != sec)
4467 {
4468 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
4469 if (p == NULL)
4470 return FALSE;
4471 p->next = *rel_head;
4472 *rel_head = p;
4473 p->sec = sec;
4474 p->count = 0;
4475 p->pc_count = 0;
4476 }
4477
4478 p->count += 1;
4479 if (!must_be_dyn_reloc (info, r_type))
4480 p->pc_count += 1;
4481 }
4482
4483 break;
4484 }
4485 }
4486
4487 return TRUE;
4488 }
4489 \f
4490
4491 /* Merge object attributes from IBFD into OBFD. Raise an error if
4492 there are conflicting attributes. */
4493 static bfd_boolean
4494 ppc_elf_merge_obj_attributes (bfd *ibfd, bfd *obfd)
4495 {
4496 obj_attribute *in_attr, *in_attrs;
4497 obj_attribute *out_attr, *out_attrs;
4498
4499 if (!elf_known_obj_attributes_proc (obfd)[0].i)
4500 {
4501 /* This is the first object. Copy the attributes. */
4502 _bfd_elf_copy_obj_attributes (ibfd, obfd);
4503
4504 /* Use the Tag_null value to indicate the attributes have been
4505 initialized. */
4506 elf_known_obj_attributes_proc (obfd)[0].i = 1;
4507
4508 return TRUE;
4509 }
4510
4511 in_attrs = elf_known_obj_attributes (ibfd)[OBJ_ATTR_GNU];
4512 out_attrs = elf_known_obj_attributes (obfd)[OBJ_ATTR_GNU];
4513
4514 /* Check for conflicting Tag_GNU_Power_ABI_FP attributes and merge
4515 non-conflicting ones. */
4516 in_attr = &in_attrs[Tag_GNU_Power_ABI_FP];
4517 out_attr = &out_attrs[Tag_GNU_Power_ABI_FP];
4518 if (in_attr->i != out_attr->i)
4519 {
4520 out_attr->type = 1;
4521 if (out_attr->i == 0)
4522 out_attr->i = in_attr->i;
4523 else if (in_attr->i == 0)
4524 ;
4525 else if (out_attr->i == 1 && in_attr->i == 2)
4526 _bfd_error_handler
4527 (_("Warning: %B uses hard float, %B uses soft float"), obfd, ibfd);
4528 else if (out_attr->i == 1 && in_attr->i == 3)
4529 _bfd_error_handler
4530 (_("Warning: %B uses double-precision hard float, %B uses single-precision hard float"),
4531 obfd, ibfd);
4532 else if (out_attr->i == 3 && in_attr->i == 1)
4533 _bfd_error_handler
4534 (_("Warning: %B uses double-precision hard float, %B uses single-precision hard float"),
4535 ibfd, obfd);
4536 else if (out_attr->i == 3 && in_attr->i == 2)
4537 _bfd_error_handler
4538 (_("Warning: %B uses soft float, %B uses single-precision hard float"),
4539 ibfd, obfd);
4540 else if (out_attr->i == 2 && (in_attr->i == 1 || in_attr->i == 3))
4541 _bfd_error_handler
4542 (_("Warning: %B uses hard float, %B uses soft float"), ibfd, obfd);
4543 else if (in_attr->i > 3)
4544 _bfd_error_handler
4545 (_("Warning: %B uses unknown floating point ABI %d"), ibfd,
4546 in_attr->i);
4547 else
4548 _bfd_error_handler
4549 (_("Warning: %B uses unknown floating point ABI %d"), obfd,
4550 out_attr->i);
4551 }
4552
4553 /* Check for conflicting Tag_GNU_Power_ABI_Vector attributes and
4554 merge non-conflicting ones. */
4555 in_attr = &in_attrs[Tag_GNU_Power_ABI_Vector];
4556 out_attr = &out_attrs[Tag_GNU_Power_ABI_Vector];
4557 if (in_attr->i != out_attr->i)
4558 {
4559 const char *in_abi = NULL, *out_abi = NULL;
4560
4561 switch (in_attr->i)
4562 {
4563 case 1: in_abi = "generic"; break;
4564 case 2: in_abi = "AltiVec"; break;
4565 case 3: in_abi = "SPE"; break;
4566 }
4567
4568 switch (out_attr->i)
4569 {
4570 case 1: out_abi = "generic"; break;
4571 case 2: out_abi = "AltiVec"; break;
4572 case 3: out_abi = "SPE"; break;
4573 }
4574
4575 out_attr->type = 1;
4576 if (out_attr->i == 0)
4577 out_attr->i = in_attr->i;
4578 else if (in_attr->i == 0)
4579 ;
4580 /* For now, allow generic to transition to AltiVec or SPE
4581 without a warning. If GCC marked files with their stack
4582 alignment and used don't-care markings for files which are
4583 not affected by the vector ABI, we could warn about this
4584 case too. */
4585 else if (out_attr->i == 1)
4586 out_attr->i = in_attr->i;
4587 else if (in_attr->i == 1)
4588 ;
4589 else if (in_abi == NULL)
4590 _bfd_error_handler
4591 (_("Warning: %B uses unknown vector ABI %d"), ibfd,
4592 in_attr->i);
4593 else if (out_abi == NULL)
4594 _bfd_error_handler
4595 (_("Warning: %B uses unknown vector ABI %d"), obfd,
4596 in_attr->i);
4597 else
4598 _bfd_error_handler
4599 (_("Warning: %B uses vector ABI \"%s\", %B uses \"%s\""),
4600 ibfd, obfd, in_abi, out_abi);
4601 }
4602
4603 /* Check for conflicting Tag_GNU_Power_ABI_Struct_Return attributes
4604 and merge non-conflicting ones. */
4605 in_attr = &in_attrs[Tag_GNU_Power_ABI_Struct_Return];
4606 out_attr = &out_attrs[Tag_GNU_Power_ABI_Struct_Return];
4607 if (in_attr->i != out_attr->i)
4608 {
4609 out_attr->type = 1;
4610 if (out_attr->i == 0)
4611 out_attr->i = in_attr->i;
4612 else if (in_attr->i == 0)
4613 ;
4614 else if (out_attr->i == 1 && in_attr->i == 2)
4615 _bfd_error_handler
4616 (_("Warning: %B uses r3/r4 for small structure returns, %B uses memory"), obfd, ibfd);
4617 else if (out_attr->i == 2 && in_attr->i == 1)
4618 _bfd_error_handler
4619 (_("Warning: %B uses r3/r4 for small structure returns, %B uses memory"), ibfd, obfd);
4620 else if (in_attr->i > 2)
4621 _bfd_error_handler
4622 (_("Warning: %B uses unknown small structure return convention %d"), ibfd,
4623 in_attr->i);
4624 else
4625 _bfd_error_handler
4626 (_("Warning: %B uses unknown small structure return convention %d"), obfd,
4627 out_attr->i);
4628 }
4629
4630 /* Merge Tag_compatibility attributes and any common GNU ones. */
4631 _bfd_elf_merge_object_attributes (ibfd, obfd);
4632
4633 return TRUE;
4634 }
4635
4636 /* Merge backend specific data from an object file to the output
4637 object file when linking. */
4638
4639 static bfd_boolean
4640 ppc_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
4641 {
4642 flagword old_flags;
4643 flagword new_flags;
4644 bfd_boolean error;
4645
4646 if (!is_ppc_elf (ibfd) || !is_ppc_elf (obfd))
4647 return TRUE;
4648
4649 /* Check if we have the same endianness. */
4650 if (! _bfd_generic_verify_endian_match (ibfd, obfd))
4651 return FALSE;
4652
4653 if (!ppc_elf_merge_obj_attributes (ibfd, obfd))
4654 return FALSE;
4655
4656 new_flags = elf_elfheader (ibfd)->e_flags;
4657 old_flags = elf_elfheader (obfd)->e_flags;
4658 if (!elf_flags_init (obfd))
4659 {
4660 /* First call, no flags set. */
4661 elf_flags_init (obfd) = TRUE;
4662 elf_elfheader (obfd)->e_flags = new_flags;
4663 }
4664
4665 /* Compatible flags are ok. */
4666 else if (new_flags == old_flags)
4667 ;
4668
4669 /* Incompatible flags. */
4670 else
4671 {
4672 /* Warn about -mrelocatable mismatch. Allow -mrelocatable-lib
4673 to be linked with either. */
4674 error = FALSE;
4675 if ((new_flags & EF_PPC_RELOCATABLE) != 0
4676 && (old_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0)
4677 {
4678 error = TRUE;
4679 (*_bfd_error_handler)
4680 (_("%B: compiled with -mrelocatable and linked with "
4681 "modules compiled normally"), ibfd);
4682 }
4683 else if ((new_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0
4684 && (old_flags & EF_PPC_RELOCATABLE) != 0)
4685 {
4686 error = TRUE;
4687 (*_bfd_error_handler)
4688 (_("%B: compiled normally and linked with "
4689 "modules compiled with -mrelocatable"), ibfd);
4690 }
4691
4692 /* The output is -mrelocatable-lib iff both the input files are. */
4693 if (! (new_flags & EF_PPC_RELOCATABLE_LIB))
4694 elf_elfheader (obfd)->e_flags &= ~EF_PPC_RELOCATABLE_LIB;
4695
4696 /* The output is -mrelocatable iff it can't be -mrelocatable-lib,
4697 but each input file is either -mrelocatable or -mrelocatable-lib. */
4698 if (! (elf_elfheader (obfd)->e_flags & EF_PPC_RELOCATABLE_LIB)
4699 && (new_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE))
4700 && (old_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE)))
4701 elf_elfheader (obfd)->e_flags |= EF_PPC_RELOCATABLE;
4702
4703 /* Do not warn about eabi vs. V.4 mismatch, just or in the bit if
4704 any module uses it. */
4705 elf_elfheader (obfd)->e_flags |= (new_flags & EF_PPC_EMB);
4706
4707 new_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
4708 old_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
4709
4710 /* Warn about any other mismatches. */
4711 if (new_flags != old_flags)
4712 {
4713 error = TRUE;
4714 (*_bfd_error_handler)
4715 (_("%B: uses different e_flags (0x%lx) fields "
4716 "than previous modules (0x%lx)"),
4717 ibfd, (long) new_flags, (long) old_flags);
4718 }
4719
4720 if (error)
4721 {
4722 bfd_set_error (bfd_error_bad_value);
4723 return FALSE;
4724 }
4725 }
4726
4727 return TRUE;
4728 }
4729
4730 static void
4731 ppc_elf_vle_split16 (bfd *output_bfd, bfd_byte *contents,
4732 bfd_vma offset, bfd_vma relocation,
4733 split16_format_type split16_format)
4734
4735 {
4736 bfd_vma insn, top5, bottom11;
4737
4738 insn = bfd_get_32 (output_bfd, contents + offset);
4739 top5 = relocation >> 11;
4740 top5 = top5 << (split16_format == split16a_type ? 20 : 16);
4741 bottom11 = relocation & 0x7ff;
4742 insn |= top5;
4743 insn |= bottom11;
4744 bfd_put_32 (output_bfd, insn, contents + offset);
4745 }
4746
4747 \f
4748 /* Choose which PLT scheme to use, and set .plt flags appropriately.
4749 Returns -1 on error, 0 for old PLT, 1 for new PLT. */
4750 int
4751 ppc_elf_select_plt_layout (bfd *output_bfd ATTRIBUTE_UNUSED,
4752 struct bfd_link_info *info,
4753 enum ppc_elf_plt_type plt_style,
4754 int emit_stub_syms)
4755 {
4756 struct ppc_elf_link_hash_table *htab;
4757 flagword flags;
4758
4759 htab = ppc_elf_hash_table (info);
4760
4761 htab->emit_stub_syms = emit_stub_syms;
4762
4763 if (htab->plt_type == PLT_UNSET)
4764 {
4765 struct elf_link_hash_entry *h;
4766
4767 if (plt_style == PLT_OLD)
4768 htab->plt_type = PLT_OLD;
4769 else if (info->shared
4770 && htab->elf.dynamic_sections_created
4771 && (h = elf_link_hash_lookup (&htab->elf, "_mcount",
4772 FALSE, FALSE, TRUE)) != NULL
4773 && (h->type == STT_FUNC
4774 || h->needs_plt)
4775 && h->ref_regular
4776 && !(SYMBOL_CALLS_LOCAL (info, h)
4777 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
4778 && h->root.type == bfd_link_hash_undefweak)))
4779 {
4780 /* Profiling of shared libs (and pies) is not supported with
4781 secure plt, because ppc32 does profiling before a
4782 function prologue and a secure plt pic call stubs needs
4783 r30 to be set up. */
4784 htab->plt_type = PLT_OLD;
4785 }
4786 else
4787 {
4788 bfd *ibfd;
4789 enum ppc_elf_plt_type plt_type = plt_style;
4790
4791 /* Look through the reloc flags left by ppc_elf_check_relocs.
4792 Use the old style bss plt if a file makes plt calls
4793 without using the new relocs, and if ld isn't given
4794 --secure-plt and we never see REL16 relocs. */
4795 if (plt_type == PLT_UNSET)
4796 plt_type = PLT_OLD;
4797 for (ibfd = info->input_bfds; ibfd; ibfd = ibfd->link_next)
4798 if (is_ppc_elf (ibfd))
4799 {
4800 if (ppc_elf_tdata (ibfd)->has_rel16)
4801 plt_type = PLT_NEW;
4802 else if (ppc_elf_tdata (ibfd)->makes_plt_call)
4803 {
4804 plt_type = PLT_OLD;
4805 htab->old_bfd = ibfd;
4806 break;
4807 }
4808 }
4809 htab->plt_type = plt_type;
4810 }
4811 }
4812 if (htab->plt_type == PLT_OLD && plt_style == PLT_NEW)
4813 {
4814 if (htab->old_bfd != NULL)
4815 info->callbacks->einfo (_("%P: bss-plt forced due to %B\n"),
4816 htab->old_bfd);
4817 else
4818 info->callbacks->einfo (_("%P: bss-plt forced by profiling\n"));
4819 }
4820
4821 BFD_ASSERT (htab->plt_type != PLT_VXWORKS);
4822
4823 if (htab->plt_type == PLT_NEW)
4824 {
4825 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
4826 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4827
4828 /* The new PLT is a loaded section. */
4829 if (htab->plt != NULL
4830 && !bfd_set_section_flags (htab->elf.dynobj, htab->plt, flags))
4831 return -1;
4832
4833 /* The new GOT is not executable. */
4834 if (htab->got != NULL
4835 && !bfd_set_section_flags (htab->elf.dynobj, htab->got, flags))
4836 return -1;
4837 }
4838 else
4839 {
4840 /* Stop an unused .glink section from affecting .text alignment. */
4841 if (htab->glink != NULL
4842 && !bfd_set_section_alignment (htab->elf.dynobj, htab->glink, 0))
4843 return -1;
4844 }
4845 return htab->plt_type == PLT_NEW;
4846 }
4847 \f
4848 /* Return the section that should be marked against GC for a given
4849 relocation. */
4850
4851 static asection *
4852 ppc_elf_gc_mark_hook (asection *sec,
4853 struct bfd_link_info *info,
4854 Elf_Internal_Rela *rel,
4855 struct elf_link_hash_entry *h,
4856 Elf_Internal_Sym *sym)
4857 {
4858 if (h != NULL)
4859 switch (ELF32_R_TYPE (rel->r_info))
4860 {
4861 case R_PPC_GNU_VTINHERIT:
4862 case R_PPC_GNU_VTENTRY:
4863 return NULL;
4864 }
4865
4866 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
4867 }
4868
4869 /* Update the got, plt and dynamic reloc reference counts for the
4870 section being removed. */
4871
4872 static bfd_boolean
4873 ppc_elf_gc_sweep_hook (bfd *abfd,
4874 struct bfd_link_info *info,
4875 asection *sec,
4876 const Elf_Internal_Rela *relocs)
4877 {
4878 struct ppc_elf_link_hash_table *htab;
4879 Elf_Internal_Shdr *symtab_hdr;
4880 struct elf_link_hash_entry **sym_hashes;
4881 bfd_signed_vma *local_got_refcounts;
4882 const Elf_Internal_Rela *rel, *relend;
4883 asection *got2;
4884
4885 if (info->relocatable)
4886 return TRUE;
4887
4888 if ((sec->flags & SEC_ALLOC) == 0)
4889 return TRUE;
4890
4891 elf_section_data (sec)->local_dynrel = NULL;
4892
4893 htab = ppc_elf_hash_table (info);
4894 symtab_hdr = &elf_symtab_hdr (abfd);
4895 sym_hashes = elf_sym_hashes (abfd);
4896 local_got_refcounts = elf_local_got_refcounts (abfd);
4897 got2 = bfd_get_section_by_name (abfd, ".got2");
4898
4899 relend = relocs + sec->reloc_count;
4900 for (rel = relocs; rel < relend; rel++)
4901 {
4902 unsigned long r_symndx;
4903 enum elf_ppc_reloc_type r_type;
4904 struct elf_link_hash_entry *h = NULL;
4905
4906 r_symndx = ELF32_R_SYM (rel->r_info);
4907 if (r_symndx >= symtab_hdr->sh_info)
4908 {
4909 struct elf_dyn_relocs **pp, *p;
4910 struct ppc_elf_link_hash_entry *eh;
4911
4912 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4913 while (h->root.type == bfd_link_hash_indirect
4914 || h->root.type == bfd_link_hash_warning)
4915 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4916 eh = (struct ppc_elf_link_hash_entry *) h;
4917
4918 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
4919 if (p->sec == sec)
4920 {
4921 /* Everything must go for SEC. */
4922 *pp = p->next;
4923 break;
4924 }
4925 }
4926
4927 r_type = ELF32_R_TYPE (rel->r_info);
4928 if (!htab->is_vxworks
4929 && h == NULL
4930 && local_got_refcounts != NULL
4931 && (!info->shared
4932 || is_branch_reloc (r_type)))
4933 {
4934 struct plt_entry **local_plt = (struct plt_entry **)
4935 (local_got_refcounts + symtab_hdr->sh_info);
4936 char *local_got_tls_masks = (char *)
4937 (local_plt + symtab_hdr->sh_info);
4938 if ((local_got_tls_masks[r_symndx] & PLT_IFUNC) != 0)
4939 {
4940 struct plt_entry **ifunc = local_plt + r_symndx;
4941 bfd_vma addend = 0;
4942 struct plt_entry *ent;
4943
4944 if (r_type == R_PPC_PLTREL24 && info->shared)
4945 addend = rel->r_addend;
4946 ent = find_plt_ent (ifunc, got2, addend);
4947 if (ent->plt.refcount > 0)
4948 ent->plt.refcount -= 1;
4949 continue;
4950 }
4951 }
4952
4953 switch (r_type)
4954 {
4955 case R_PPC_GOT_TLSLD16:
4956 case R_PPC_GOT_TLSLD16_LO:
4957 case R_PPC_GOT_TLSLD16_HI:
4958 case R_PPC_GOT_TLSLD16_HA:
4959 case R_PPC_GOT_TLSGD16:
4960 case R_PPC_GOT_TLSGD16_LO:
4961 case R_PPC_GOT_TLSGD16_HI:
4962 case R_PPC_GOT_TLSGD16_HA:
4963 case R_PPC_GOT_TPREL16:
4964 case R_PPC_GOT_TPREL16_LO:
4965 case R_PPC_GOT_TPREL16_HI:
4966 case R_PPC_GOT_TPREL16_HA:
4967 case R_PPC_GOT_DTPREL16:
4968 case R_PPC_GOT_DTPREL16_LO:
4969 case R_PPC_GOT_DTPREL16_HI:
4970 case R_PPC_GOT_DTPREL16_HA:
4971 case R_PPC_GOT16:
4972 case R_PPC_GOT16_LO:
4973 case R_PPC_GOT16_HI:
4974 case R_PPC_GOT16_HA:
4975 if (h != NULL)
4976 {
4977 if (h->got.refcount > 0)
4978 h->got.refcount--;
4979 if (!info->shared)
4980 {
4981 struct plt_entry *ent;
4982
4983 ent = find_plt_ent (&h->plt.plist, NULL, 0);
4984 if (ent != NULL && ent->plt.refcount > 0)
4985 ent->plt.refcount -= 1;
4986 }
4987 }
4988 else if (local_got_refcounts != NULL)
4989 {
4990 if (local_got_refcounts[r_symndx] > 0)
4991 local_got_refcounts[r_symndx]--;
4992 }
4993 break;
4994
4995 case R_PPC_REL24:
4996 case R_PPC_REL14:
4997 case R_PPC_REL14_BRTAKEN:
4998 case R_PPC_REL14_BRNTAKEN:
4999 case R_PPC_REL32:
5000 if (h == NULL || h == htab->elf.hgot)
5001 break;
5002 /* Fall thru */
5003
5004 case R_PPC_ADDR32:
5005 case R_PPC_ADDR24:
5006 case R_PPC_ADDR16:
5007 case R_PPC_ADDR16_LO:
5008 case R_PPC_ADDR16_HI:
5009 case R_PPC_ADDR16_HA:
5010 case R_PPC_ADDR14:
5011 case R_PPC_ADDR14_BRTAKEN:
5012 case R_PPC_ADDR14_BRNTAKEN:
5013 case R_PPC_UADDR32:
5014 case R_PPC_UADDR16:
5015 if (info->shared)
5016 break;
5017
5018 case R_PPC_PLT32:
5019 case R_PPC_PLTREL24:
5020 case R_PPC_PLTREL32:
5021 case R_PPC_PLT16_LO:
5022 case R_PPC_PLT16_HI:
5023 case R_PPC_PLT16_HA:
5024 if (h != NULL)
5025 {
5026 bfd_vma addend = 0;
5027 struct plt_entry *ent;
5028
5029 if (r_type == R_PPC_PLTREL24 && info->shared)
5030 addend = rel->r_addend;
5031 ent = find_plt_ent (&h->plt.plist, got2, addend);
5032 if (ent != NULL && ent->plt.refcount > 0)
5033 ent->plt.refcount -= 1;
5034 }
5035 break;
5036
5037 default:
5038 break;
5039 }
5040 }
5041 return TRUE;
5042 }
5043 \f
5044 /* Set plt output section type, htab->tls_get_addr, and call the
5045 generic ELF tls_setup function. */
5046
5047 asection *
5048 ppc_elf_tls_setup (bfd *obfd,
5049 struct bfd_link_info *info,
5050 int no_tls_get_addr_opt)
5051 {
5052 struct ppc_elf_link_hash_table *htab;
5053
5054 htab = ppc_elf_hash_table (info);
5055 htab->tls_get_addr = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
5056 FALSE, FALSE, TRUE);
5057 if (!no_tls_get_addr_opt)
5058 {
5059 struct elf_link_hash_entry *opt, *tga;
5060 opt = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_opt",
5061 FALSE, FALSE, TRUE);
5062 if (opt != NULL
5063 && (opt->root.type == bfd_link_hash_defined
5064 || opt->root.type == bfd_link_hash_defweak))
5065 {
5066 /* If glibc supports an optimized __tls_get_addr call stub,
5067 signalled by the presence of __tls_get_addr_opt, and we'll
5068 be calling __tls_get_addr via a plt call stub, then
5069 make __tls_get_addr point to __tls_get_addr_opt. */
5070 tga = htab->tls_get_addr;
5071 if (htab->elf.dynamic_sections_created
5072 && tga != NULL
5073 && (tga->type == STT_FUNC
5074 || tga->needs_plt)
5075 && !(SYMBOL_CALLS_LOCAL (info, tga)
5076 || (ELF_ST_VISIBILITY (tga->other) != STV_DEFAULT
5077 && tga->root.type == bfd_link_hash_undefweak)))
5078 {
5079 struct plt_entry *ent;
5080 for (ent = tga->plt.plist; ent != NULL; ent = ent->next)
5081 if (ent->plt.refcount > 0)
5082 break;
5083 if (ent != NULL)
5084 {
5085 tga->root.type = bfd_link_hash_indirect;
5086 tga->root.u.i.link = &opt->root;
5087 ppc_elf_copy_indirect_symbol (info, opt, tga);
5088 if (opt->dynindx != -1)
5089 {
5090 /* Use __tls_get_addr_opt in dynamic relocations. */
5091 opt->dynindx = -1;
5092 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
5093 opt->dynstr_index);
5094 if (!bfd_elf_link_record_dynamic_symbol (info, opt))
5095 return FALSE;
5096 }
5097 htab->tls_get_addr = opt;
5098 }
5099 }
5100 }
5101 else
5102 no_tls_get_addr_opt = TRUE;
5103 }
5104 htab->no_tls_get_addr_opt = no_tls_get_addr_opt;
5105 if (htab->plt_type == PLT_NEW
5106 && htab->plt != NULL
5107 && htab->plt->output_section != NULL)
5108 {
5109 elf_section_type (htab->plt->output_section) = SHT_PROGBITS;
5110 elf_section_flags (htab->plt->output_section) = SHF_ALLOC + SHF_WRITE;
5111 }
5112
5113 return _bfd_elf_tls_setup (obfd, info);
5114 }
5115
5116 /* Return TRUE iff REL is a branch reloc with a global symbol matching
5117 HASH. */
5118
5119 static bfd_boolean
5120 branch_reloc_hash_match (const bfd *ibfd,
5121 const Elf_Internal_Rela *rel,
5122 const struct elf_link_hash_entry *hash)
5123 {
5124 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
5125 enum elf_ppc_reloc_type r_type = ELF32_R_TYPE (rel->r_info);
5126 unsigned int r_symndx = ELF32_R_SYM (rel->r_info);
5127
5128 if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type))
5129 {
5130 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
5131 struct elf_link_hash_entry *h;
5132
5133 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5134 while (h->root.type == bfd_link_hash_indirect
5135 || h->root.type == bfd_link_hash_warning)
5136 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5137 if (h == hash)
5138 return TRUE;
5139 }
5140 return FALSE;
5141 }
5142
5143 /* Run through all the TLS relocs looking for optimization
5144 opportunities. */
5145
5146 bfd_boolean
5147 ppc_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED,
5148 struct bfd_link_info *info)
5149 {
5150 bfd *ibfd;
5151 asection *sec;
5152 struct ppc_elf_link_hash_table *htab;
5153 int pass;
5154
5155 if (info->relocatable || !info->executable)
5156 return TRUE;
5157
5158 htab = ppc_elf_hash_table (info);
5159 if (htab == NULL)
5160 return FALSE;
5161
5162 /* Make two passes through the relocs. First time check that tls
5163 relocs involved in setting up a tls_get_addr call are indeed
5164 followed by such a call. If they are not, don't do any tls
5165 optimization. On the second pass twiddle tls_mask flags to
5166 notify relocate_section that optimization can be done, and
5167 adjust got and plt refcounts. */
5168 for (pass = 0; pass < 2; ++pass)
5169 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
5170 {
5171 Elf_Internal_Sym *locsyms = NULL;
5172 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
5173 asection *got2 = bfd_get_section_by_name (ibfd, ".got2");
5174
5175 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
5176 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
5177 {
5178 Elf_Internal_Rela *relstart, *rel, *relend;
5179 int expecting_tls_get_addr = 0;
5180
5181 /* Read the relocations. */
5182 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
5183 info->keep_memory);
5184 if (relstart == NULL)
5185 return FALSE;
5186
5187 relend = relstart + sec->reloc_count;
5188 for (rel = relstart; rel < relend; rel++)
5189 {
5190 enum elf_ppc_reloc_type r_type;
5191 unsigned long r_symndx;
5192 struct elf_link_hash_entry *h = NULL;
5193 char *tls_mask;
5194 char tls_set, tls_clear;
5195 bfd_boolean is_local;
5196 bfd_signed_vma *got_count;
5197
5198 r_symndx = ELF32_R_SYM (rel->r_info);
5199 if (r_symndx >= symtab_hdr->sh_info)
5200 {
5201 struct elf_link_hash_entry **sym_hashes;
5202
5203 sym_hashes = elf_sym_hashes (ibfd);
5204 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5205 while (h->root.type == bfd_link_hash_indirect
5206 || h->root.type == bfd_link_hash_warning)
5207 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5208 }
5209
5210 is_local = FALSE;
5211 if (h == NULL
5212 || !h->def_dynamic)
5213 is_local = TRUE;
5214
5215 r_type = ELF32_R_TYPE (rel->r_info);
5216 /* If this section has old-style __tls_get_addr calls
5217 without marker relocs, then check that each
5218 __tls_get_addr call reloc is preceded by a reloc
5219 that conceivably belongs to the __tls_get_addr arg
5220 setup insn. If we don't find matching arg setup
5221 relocs, don't do any tls optimization. */
5222 if (pass == 0
5223 && sec->has_tls_get_addr_call
5224 && h != NULL
5225 && h == htab->tls_get_addr
5226 && !expecting_tls_get_addr
5227 && is_branch_reloc (r_type))
5228 {
5229 info->callbacks->minfo ("%H __tls_get_addr lost arg, "
5230 "TLS optimization disabled\n",
5231 ibfd, sec, rel->r_offset);
5232 if (elf_section_data (sec)->relocs != relstart)
5233 free (relstart);
5234 return TRUE;
5235 }
5236
5237 expecting_tls_get_addr = 0;
5238 switch (r_type)
5239 {
5240 case R_PPC_GOT_TLSLD16:
5241 case R_PPC_GOT_TLSLD16_LO:
5242 expecting_tls_get_addr = 1;
5243 /* Fall thru */
5244
5245 case R_PPC_GOT_TLSLD16_HI:
5246 case R_PPC_GOT_TLSLD16_HA:
5247 /* These relocs should never be against a symbol
5248 defined in a shared lib. Leave them alone if
5249 that turns out to be the case. */
5250 if (!is_local)
5251 continue;
5252
5253 /* LD -> LE */
5254 tls_set = 0;
5255 tls_clear = TLS_LD;
5256 break;
5257
5258 case R_PPC_GOT_TLSGD16:
5259 case R_PPC_GOT_TLSGD16_LO:
5260 expecting_tls_get_addr = 1;
5261 /* Fall thru */
5262
5263 case R_PPC_GOT_TLSGD16_HI:
5264 case R_PPC_GOT_TLSGD16_HA:
5265 if (is_local)
5266 /* GD -> LE */
5267 tls_set = 0;
5268 else
5269 /* GD -> IE */
5270 tls_set = TLS_TLS | TLS_TPRELGD;
5271 tls_clear = TLS_GD;
5272 break;
5273
5274 case R_PPC_GOT_TPREL16:
5275 case R_PPC_GOT_TPREL16_LO:
5276 case R_PPC_GOT_TPREL16_HI:
5277 case R_PPC_GOT_TPREL16_HA:
5278 if (is_local)
5279 {
5280 /* IE -> LE */
5281 tls_set = 0;
5282 tls_clear = TLS_TPREL;
5283 break;
5284 }
5285 else
5286 continue;
5287
5288 case R_PPC_TLSGD:
5289 case R_PPC_TLSLD:
5290 expecting_tls_get_addr = 2;
5291 tls_set = 0;
5292 tls_clear = 0;
5293 break;
5294
5295 default:
5296 continue;
5297 }
5298
5299 if (pass == 0)
5300 {
5301 if (!expecting_tls_get_addr
5302 || (expecting_tls_get_addr == 1
5303 && !sec->has_tls_get_addr_call))
5304 continue;
5305
5306 if (rel + 1 < relend
5307 && branch_reloc_hash_match (ibfd, rel + 1,
5308 htab->tls_get_addr))
5309 continue;
5310
5311 /* Uh oh, we didn't find the expected call. We
5312 could just mark this symbol to exclude it
5313 from tls optimization but it's safer to skip
5314 the entire optimization. */
5315 info->callbacks->minfo (_("%H arg lost __tls_get_addr, "
5316 "TLS optimization disabled\n"),
5317 ibfd, sec, rel->r_offset);
5318 if (elf_section_data (sec)->relocs != relstart)
5319 free (relstart);
5320 return TRUE;
5321 }
5322
5323 if (expecting_tls_get_addr)
5324 {
5325 struct plt_entry *ent;
5326 bfd_vma addend = 0;
5327
5328 if (info->shared
5329 && ELF32_R_TYPE (rel[1].r_info) == R_PPC_PLTREL24)
5330 addend = rel[1].r_addend;
5331 ent = find_plt_ent (&htab->tls_get_addr->plt.plist,
5332 got2, addend);
5333 if (ent != NULL && ent->plt.refcount > 0)
5334 ent->plt.refcount -= 1;
5335
5336 if (expecting_tls_get_addr == 2)
5337 continue;
5338 }
5339
5340 if (h != NULL)
5341 {
5342 tls_mask = &ppc_elf_hash_entry (h)->tls_mask;
5343 got_count = &h->got.refcount;
5344 }
5345 else
5346 {
5347 bfd_signed_vma *lgot_refs;
5348 struct plt_entry **local_plt;
5349 char *lgot_masks;
5350
5351 if (locsyms == NULL)
5352 {
5353 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
5354 if (locsyms == NULL)
5355 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
5356 symtab_hdr->sh_info,
5357 0, NULL, NULL, NULL);
5358 if (locsyms == NULL)
5359 {
5360 if (elf_section_data (sec)->relocs != relstart)
5361 free (relstart);
5362 return FALSE;
5363 }
5364 }
5365 lgot_refs = elf_local_got_refcounts (ibfd);
5366 if (lgot_refs == NULL)
5367 abort ();
5368 local_plt = (struct plt_entry **)
5369 (lgot_refs + symtab_hdr->sh_info);
5370 lgot_masks = (char *) (local_plt + symtab_hdr->sh_info);
5371 tls_mask = &lgot_masks[r_symndx];
5372 got_count = &lgot_refs[r_symndx];
5373 }
5374
5375 if (tls_set == 0)
5376 {
5377 /* We managed to get rid of a got entry. */
5378 if (*got_count > 0)
5379 *got_count -= 1;
5380 }
5381
5382 *tls_mask |= tls_set;
5383 *tls_mask &= ~tls_clear;
5384 }
5385
5386 if (elf_section_data (sec)->relocs != relstart)
5387 free (relstart);
5388 }
5389
5390 if (locsyms != NULL
5391 && (symtab_hdr->contents != (unsigned char *) locsyms))
5392 {
5393 if (!info->keep_memory)
5394 free (locsyms);
5395 else
5396 symtab_hdr->contents = (unsigned char *) locsyms;
5397 }
5398 }
5399 return TRUE;
5400 }
5401 \f
5402 /* Return true if we have dynamic relocs that apply to read-only sections. */
5403
5404 static bfd_boolean
5405 readonly_dynrelocs (struct elf_link_hash_entry *h)
5406 {
5407 struct elf_dyn_relocs *p;
5408
5409 for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next)
5410 {
5411 asection *s = p->sec->output_section;
5412
5413 if (s != NULL
5414 && ((s->flags & (SEC_READONLY | SEC_ALLOC))
5415 == (SEC_READONLY | SEC_ALLOC)))
5416 return TRUE;
5417 }
5418 return FALSE;
5419 }
5420
5421 /* Adjust a symbol defined by a dynamic object and referenced by a
5422 regular object. The current definition is in some section of the
5423 dynamic object, but we're not including those sections. We have to
5424 change the definition to something the rest of the link can
5425 understand. */
5426
5427 static bfd_boolean
5428 ppc_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
5429 struct elf_link_hash_entry *h)
5430 {
5431 struct ppc_elf_link_hash_table *htab;
5432 asection *s;
5433
5434 #ifdef DEBUG
5435 fprintf (stderr, "ppc_elf_adjust_dynamic_symbol called for %s\n",
5436 h->root.root.string);
5437 #endif
5438
5439 /* Make sure we know what is going on here. */
5440 htab = ppc_elf_hash_table (info);
5441 BFD_ASSERT (htab->elf.dynobj != NULL
5442 && (h->needs_plt
5443 || h->type == STT_GNU_IFUNC
5444 || h->u.weakdef != NULL
5445 || (h->def_dynamic
5446 && h->ref_regular
5447 && !h->def_regular)));
5448
5449 /* Deal with function syms. */
5450 if (h->type == STT_FUNC
5451 || h->type == STT_GNU_IFUNC
5452 || h->needs_plt)
5453 {
5454 /* Clear procedure linkage table information for any symbol that
5455 won't need a .plt entry. */
5456 struct plt_entry *ent;
5457 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
5458 if (ent->plt.refcount > 0)
5459 break;
5460 if (ent == NULL
5461 || (h->type != STT_GNU_IFUNC
5462 && (SYMBOL_CALLS_LOCAL (info, h)
5463 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
5464 && h->root.type == bfd_link_hash_undefweak))))
5465 {
5466 /* A PLT entry is not required/allowed when:
5467
5468 1. We are not using ld.so; because then the PLT entry
5469 can't be set up, so we can't use one. In this case,
5470 ppc_elf_adjust_dynamic_symbol won't even be called.
5471
5472 2. GC has rendered the entry unused.
5473
5474 3. We know for certain that a call to this symbol
5475 will go to this object, or will remain undefined. */
5476 h->plt.plist = NULL;
5477 h->needs_plt = 0;
5478 }
5479 else
5480 {
5481 /* After adjust_dynamic_symbol, non_got_ref set in the
5482 non-shared case means that we have allocated space in
5483 .dynbss for the symbol and thus dyn_relocs for this
5484 symbol should be discarded.
5485 If we get here we know we are making a PLT entry for this
5486 symbol, and in an executable we'd normally resolve
5487 relocations against this symbol to the PLT entry. Allow
5488 dynamic relocs if the reference is weak, and the dynamic
5489 relocs will not cause text relocation. */
5490 if (!h->ref_regular_nonweak
5491 && h->non_got_ref
5492 && h->type != STT_GNU_IFUNC
5493 && !htab->is_vxworks
5494 && !ppc_elf_hash_entry (h)->has_sda_refs
5495 && !readonly_dynrelocs (h))
5496 h->non_got_ref = 0;
5497 }
5498 return TRUE;
5499 }
5500 else
5501 h->plt.plist = NULL;
5502
5503 /* If this is a weak symbol, and there is a real definition, the
5504 processor independent code will have arranged for us to see the
5505 real definition first, and we can just use the same value. */
5506 if (h->u.weakdef != NULL)
5507 {
5508 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
5509 || h->u.weakdef->root.type == bfd_link_hash_defweak);
5510 h->root.u.def.section = h->u.weakdef->root.u.def.section;
5511 h->root.u.def.value = h->u.weakdef->root.u.def.value;
5512 if (ELIMINATE_COPY_RELOCS)
5513 h->non_got_ref = h->u.weakdef->non_got_ref;
5514 return TRUE;
5515 }
5516
5517 /* This is a reference to a symbol defined by a dynamic object which
5518 is not a function. */
5519
5520 /* If we are creating a shared library, we must presume that the
5521 only references to the symbol are via the global offset table.
5522 For such cases we need not do anything here; the relocations will
5523 be handled correctly by relocate_section. */
5524 if (info->shared)
5525 return TRUE;
5526
5527 /* If there are no references to this symbol that do not use the
5528 GOT, we don't need to generate a copy reloc. */
5529 if (!h->non_got_ref)
5530 return TRUE;
5531
5532 /* If we didn't find any dynamic relocs in read-only sections, then
5533 we'll be keeping the dynamic relocs and avoiding the copy reloc.
5534 We can't do this if there are any small data relocations. This
5535 doesn't work on VxWorks, where we can not have dynamic
5536 relocations (other than copy and jump slot relocations) in an
5537 executable. */
5538 if (ELIMINATE_COPY_RELOCS
5539 && !ppc_elf_hash_entry (h)->has_sda_refs
5540 && !htab->is_vxworks
5541 && !h->def_regular
5542 && !readonly_dynrelocs (h))
5543 {
5544 h->non_got_ref = 0;
5545 return TRUE;
5546 }
5547
5548 /* We must allocate the symbol in our .dynbss section, which will
5549 become part of the .bss section of the executable. There will be
5550 an entry for this symbol in the .dynsym section. The dynamic
5551 object will contain position independent code, so all references
5552 from the dynamic object to this symbol will go through the global
5553 offset table. The dynamic linker will use the .dynsym entry to
5554 determine the address it must put in the global offset table, so
5555 both the dynamic object and the regular object will refer to the
5556 same memory location for the variable.
5557
5558 Of course, if the symbol is referenced using SDAREL relocs, we
5559 must instead allocate it in .sbss. */
5560
5561 if (ppc_elf_hash_entry (h)->has_sda_refs)
5562 s = htab->dynsbss;
5563 else
5564 s = htab->dynbss;
5565 BFD_ASSERT (s != NULL);
5566
5567 /* We must generate a R_PPC_COPY reloc to tell the dynamic linker to
5568 copy the initial value out of the dynamic object and into the
5569 runtime process image. We need to remember the offset into the
5570 .rela.bss section we are going to use. */
5571 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
5572 {
5573 asection *srel;
5574
5575 if (ppc_elf_hash_entry (h)->has_sda_refs)
5576 srel = htab->relsbss;
5577 else
5578 srel = htab->relbss;
5579 BFD_ASSERT (srel != NULL);
5580 srel->size += sizeof (Elf32_External_Rela);
5581 h->needs_copy = 1;
5582 }
5583
5584 return _bfd_elf_adjust_dynamic_copy (h, s);
5585 }
5586 \f
5587 /* Generate a symbol to mark plt call stubs. For non-PIC code the sym is
5588 xxxxxxxx.plt_call32.<callee> where xxxxxxxx is a hex number, usually 0,
5589 specifying the addend on the plt relocation. For -fpic code, the sym
5590 is xxxxxxxx.plt_pic32.<callee>, and for -fPIC
5591 xxxxxxxx.got2.plt_pic32.<callee>. */
5592
5593 static bfd_boolean
5594 add_stub_sym (struct plt_entry *ent,
5595 struct elf_link_hash_entry *h,
5596 struct bfd_link_info *info)
5597 {
5598 struct elf_link_hash_entry *sh;
5599 size_t len1, len2, len3;
5600 char *name;
5601 const char *stub;
5602 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
5603
5604 if (info->shared)
5605 stub = ".plt_pic32.";
5606 else
5607 stub = ".plt_call32.";
5608
5609 len1 = strlen (h->root.root.string);
5610 len2 = strlen (stub);
5611 len3 = 0;
5612 if (ent->sec)
5613 len3 = strlen (ent->sec->name);
5614 name = bfd_malloc (len1 + len2 + len3 + 9);
5615 if (name == NULL)
5616 return FALSE;
5617 sprintf (name, "%08x", (unsigned) ent->addend & 0xffffffff);
5618 if (ent->sec)
5619 memcpy (name + 8, ent->sec->name, len3);
5620 memcpy (name + 8 + len3, stub, len2);
5621 memcpy (name + 8 + len3 + len2, h->root.root.string, len1 + 1);
5622 sh = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
5623 if (sh == NULL)
5624 return FALSE;
5625 if (sh->root.type == bfd_link_hash_new)
5626 {
5627 sh->root.type = bfd_link_hash_defined;
5628 sh->root.u.def.section = htab->glink;
5629 sh->root.u.def.value = ent->glink_offset;
5630 sh->ref_regular = 1;
5631 sh->def_regular = 1;
5632 sh->ref_regular_nonweak = 1;
5633 sh->forced_local = 1;
5634 sh->non_elf = 0;
5635 }
5636 return TRUE;
5637 }
5638
5639 /* Allocate NEED contiguous space in .got, and return the offset.
5640 Handles allocation of the got header when crossing 32k. */
5641
5642 static bfd_vma
5643 allocate_got (struct ppc_elf_link_hash_table *htab, unsigned int need)
5644 {
5645 bfd_vma where;
5646 unsigned int max_before_header;
5647
5648 if (htab->plt_type == PLT_VXWORKS)
5649 {
5650 where = htab->got->size;
5651 htab->got->size += need;
5652 }
5653 else
5654 {
5655 max_before_header = htab->plt_type == PLT_NEW ? 32768 : 32764;
5656 if (need <= htab->got_gap)
5657 {
5658 where = max_before_header - htab->got_gap;
5659 htab->got_gap -= need;
5660 }
5661 else
5662 {
5663 if (htab->got->size + need > max_before_header
5664 && htab->got->size <= max_before_header)
5665 {
5666 htab->got_gap = max_before_header - htab->got->size;
5667 htab->got->size = max_before_header + htab->got_header_size;
5668 }
5669 where = htab->got->size;
5670 htab->got->size += need;
5671 }
5672 }
5673 return where;
5674 }
5675
5676 /* Allocate space in associated reloc sections for dynamic relocs. */
5677
5678 static bfd_boolean
5679 allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
5680 {
5681 struct bfd_link_info *info = inf;
5682 struct ppc_elf_link_hash_entry *eh;
5683 struct ppc_elf_link_hash_table *htab;
5684 struct elf_dyn_relocs *p;
5685
5686 if (h->root.type == bfd_link_hash_indirect)
5687 return TRUE;
5688
5689 htab = ppc_elf_hash_table (info);
5690 if (htab->elf.dynamic_sections_created
5691 || h->type == STT_GNU_IFUNC)
5692 {
5693 struct plt_entry *ent;
5694 bfd_boolean doneone = FALSE;
5695 bfd_vma plt_offset = 0, glink_offset = 0;
5696 bfd_boolean dyn;
5697
5698 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
5699 if (ent->plt.refcount > 0)
5700 {
5701 /* Make sure this symbol is output as a dynamic symbol. */
5702 if (h->dynindx == -1
5703 && !h->forced_local
5704 && !h->def_regular
5705 && htab->elf.dynamic_sections_created)
5706 {
5707 if (! bfd_elf_link_record_dynamic_symbol (info, h))
5708 return FALSE;
5709 }
5710
5711 dyn = htab->elf.dynamic_sections_created;
5712 if (info->shared
5713 || h->type == STT_GNU_IFUNC
5714 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))
5715 {
5716 asection *s = htab->plt;
5717 if (!dyn || h->dynindx == -1)
5718 s = htab->iplt;
5719
5720 if (htab->plt_type == PLT_NEW || !dyn || h->dynindx == -1)
5721 {
5722 if (!doneone)
5723 {
5724 plt_offset = s->size;
5725 s->size += 4;
5726 }
5727 ent->plt.offset = plt_offset;
5728
5729 s = htab->glink;
5730 if (!doneone || info->shared)
5731 {
5732 glink_offset = s->size;
5733 s->size += GLINK_ENTRY_SIZE;
5734 if (h == htab->tls_get_addr
5735 && !htab->no_tls_get_addr_opt)
5736 s->size += TLS_GET_ADDR_GLINK_SIZE - GLINK_ENTRY_SIZE;
5737 }
5738 if (!doneone
5739 && !info->shared
5740 && h->def_dynamic
5741 && !h->def_regular)
5742 {
5743 h->root.u.def.section = s;
5744 h->root.u.def.value = glink_offset;
5745 }
5746 ent->glink_offset = glink_offset;
5747
5748 if (htab->emit_stub_syms
5749 && !add_stub_sym (ent, h, info))
5750 return FALSE;
5751 }
5752 else
5753 {
5754 if (!doneone)
5755 {
5756 /* If this is the first .plt entry, make room
5757 for the special first entry. */
5758 if (s->size == 0)
5759 s->size += htab->plt_initial_entry_size;
5760
5761 /* The PowerPC PLT is actually composed of two
5762 parts, the first part is 2 words (for a load
5763 and a jump), and then there is a remaining
5764 word available at the end. */
5765 plt_offset = (htab->plt_initial_entry_size
5766 + (htab->plt_slot_size
5767 * ((s->size
5768 - htab->plt_initial_entry_size)
5769 / htab->plt_entry_size)));
5770
5771 /* If this symbol is not defined in a regular
5772 file, and we are not generating a shared
5773 library, then set the symbol to this location
5774 in the .plt. This is to avoid text
5775 relocations, and is required to make
5776 function pointers compare as equal between
5777 the normal executable and the shared library. */
5778 if (! info->shared
5779 && h->def_dynamic
5780 && !h->def_regular)
5781 {
5782 h->root.u.def.section = s;
5783 h->root.u.def.value = plt_offset;
5784 }
5785
5786 /* Make room for this entry. */
5787 s->size += htab->plt_entry_size;
5788 /* After the 8192nd entry, room for two entries
5789 is allocated. */
5790 if (htab->plt_type == PLT_OLD
5791 && (s->size - htab->plt_initial_entry_size)
5792 / htab->plt_entry_size
5793 > PLT_NUM_SINGLE_ENTRIES)
5794 s->size += htab->plt_entry_size;
5795 }
5796 ent->plt.offset = plt_offset;
5797 }
5798
5799 /* We also need to make an entry in the .rela.plt section. */
5800 if (!doneone)
5801 {
5802 if (!htab->elf.dynamic_sections_created
5803 || h->dynindx == -1)
5804 htab->reliplt->size += sizeof (Elf32_External_Rela);
5805 else
5806 {
5807 htab->relplt->size += sizeof (Elf32_External_Rela);
5808
5809 if (htab->plt_type == PLT_VXWORKS)
5810 {
5811 /* Allocate space for the unloaded relocations. */
5812 if (!info->shared
5813 && htab->elf.dynamic_sections_created)
5814 {
5815 if (ent->plt.offset
5816 == (bfd_vma) htab->plt_initial_entry_size)
5817 {
5818 htab->srelplt2->size
5819 += (sizeof (Elf32_External_Rela)
5820 * VXWORKS_PLTRESOLVE_RELOCS);
5821 }
5822
5823 htab->srelplt2->size
5824 += (sizeof (Elf32_External_Rela)
5825 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS);
5826 }
5827
5828 /* Every PLT entry has an associated GOT entry in
5829 .got.plt. */
5830 htab->sgotplt->size += 4;
5831 }
5832 }
5833 doneone = TRUE;
5834 }
5835 }
5836 else
5837 ent->plt.offset = (bfd_vma) -1;
5838 }
5839 else
5840 ent->plt.offset = (bfd_vma) -1;
5841
5842 if (!doneone)
5843 {
5844 h->plt.plist = NULL;
5845 h->needs_plt = 0;
5846 }
5847 }
5848 else
5849 {
5850 h->plt.plist = NULL;
5851 h->needs_plt = 0;
5852 }
5853
5854 eh = (struct ppc_elf_link_hash_entry *) h;
5855 if (eh->elf.got.refcount > 0)
5856 {
5857 bfd_boolean dyn;
5858 unsigned int need;
5859
5860 /* Make sure this symbol is output as a dynamic symbol. */
5861 if (eh->elf.dynindx == -1
5862 && !eh->elf.forced_local
5863 && eh->elf.type != STT_GNU_IFUNC
5864 && htab->elf.dynamic_sections_created)
5865 {
5866 if (!bfd_elf_link_record_dynamic_symbol (info, &eh->elf))
5867 return FALSE;
5868 }
5869
5870 need = 0;
5871 if ((eh->tls_mask & TLS_TLS) != 0)
5872 {
5873 if ((eh->tls_mask & TLS_LD) != 0)
5874 {
5875 if (!eh->elf.def_dynamic)
5876 /* We'll just use htab->tlsld_got.offset. This should
5877 always be the case. It's a little odd if we have
5878 a local dynamic reloc against a non-local symbol. */
5879 htab->tlsld_got.refcount += 1;
5880 else
5881 need += 8;
5882 }
5883 if ((eh->tls_mask & TLS_GD) != 0)
5884 need += 8;
5885 if ((eh->tls_mask & (TLS_TPREL | TLS_TPRELGD)) != 0)
5886 need += 4;
5887 if ((eh->tls_mask & TLS_DTPREL) != 0)
5888 need += 4;
5889 }
5890 else
5891 need += 4;
5892 if (need == 0)
5893 eh->elf.got.offset = (bfd_vma) -1;
5894 else
5895 {
5896 eh->elf.got.offset = allocate_got (htab, need);
5897 dyn = htab->elf.dynamic_sections_created;
5898 if ((info->shared
5899 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, &eh->elf))
5900 && (ELF_ST_VISIBILITY (eh->elf.other) == STV_DEFAULT
5901 || eh->elf.root.type != bfd_link_hash_undefweak))
5902 {
5903 asection *rsec = htab->relgot;
5904 /* All the entries we allocated need relocs.
5905 Except LD only needs one. */
5906 if ((eh->tls_mask & TLS_LD) != 0
5907 && eh->elf.def_dynamic)
5908 need -= 4;
5909 rsec->size += need * (sizeof (Elf32_External_Rela) / 4);
5910 }
5911 }
5912 }
5913 else
5914 eh->elf.got.offset = (bfd_vma) -1;
5915
5916 if (eh->dyn_relocs == NULL
5917 || !htab->elf.dynamic_sections_created)
5918 return TRUE;
5919
5920 /* In the shared -Bsymbolic case, discard space allocated for
5921 dynamic pc-relative relocs against symbols which turn out to be
5922 defined in regular objects. For the normal shared case, discard
5923 space for relocs that have become local due to symbol visibility
5924 changes. */
5925
5926 if (info->shared)
5927 {
5928 /* Relocs that use pc_count are those that appear on a call insn,
5929 or certain REL relocs (see must_be_dyn_reloc) that can be
5930 generated via assembly. We want calls to protected symbols to
5931 resolve directly to the function rather than going via the plt.
5932 If people want function pointer comparisons to work as expected
5933 then they should avoid writing weird assembly. */
5934 if (SYMBOL_CALLS_LOCAL (info, h))
5935 {
5936 struct elf_dyn_relocs **pp;
5937
5938 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
5939 {
5940 p->count -= p->pc_count;
5941 p->pc_count = 0;
5942 if (p->count == 0)
5943 *pp = p->next;
5944 else
5945 pp = &p->next;
5946 }
5947 }
5948
5949 if (htab->is_vxworks)
5950 {
5951 struct elf_dyn_relocs **pp;
5952
5953 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
5954 {
5955 if (strcmp (p->sec->output_section->name, ".tls_vars") == 0)
5956 *pp = p->next;
5957 else
5958 pp = &p->next;
5959 }
5960 }
5961
5962 /* Discard relocs on undefined symbols that must be local. */
5963 if (eh->dyn_relocs != NULL
5964 && h->root.type == bfd_link_hash_undefined
5965 && (ELF_ST_VISIBILITY (h->other) == STV_HIDDEN
5966 || ELF_ST_VISIBILITY (h->other) == STV_INTERNAL))
5967 eh->dyn_relocs = NULL;
5968
5969 /* Also discard relocs on undefined weak syms with non-default
5970 visibility. */
5971 if (eh->dyn_relocs != NULL
5972 && h->root.type == bfd_link_hash_undefweak)
5973 {
5974 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
5975 eh->dyn_relocs = NULL;
5976
5977 /* Make sure undefined weak symbols are output as a dynamic
5978 symbol in PIEs. */
5979 else if (h->dynindx == -1
5980 && !h->forced_local
5981 && !h->def_regular)
5982 {
5983 if (! bfd_elf_link_record_dynamic_symbol (info, h))
5984 return FALSE;
5985 }
5986 }
5987 }
5988 else if (ELIMINATE_COPY_RELOCS)
5989 {
5990 /* For the non-shared case, discard space for relocs against
5991 symbols which turn out to need copy relocs or are not
5992 dynamic. */
5993
5994 if (!h->non_got_ref
5995 && !h->def_regular)
5996 {
5997 /* Make sure this symbol is output as a dynamic symbol.
5998 Undefined weak syms won't yet be marked as dynamic. */
5999 if (h->dynindx == -1
6000 && !h->forced_local)
6001 {
6002 if (! bfd_elf_link_record_dynamic_symbol (info, h))
6003 return FALSE;
6004 }
6005
6006 /* If that succeeded, we know we'll be keeping all the
6007 relocs. */
6008 if (h->dynindx != -1)
6009 goto keep;
6010 }
6011
6012 eh->dyn_relocs = NULL;
6013
6014 keep: ;
6015 }
6016
6017 /* Finally, allocate space. */
6018 for (p = eh->dyn_relocs; p != NULL; p = p->next)
6019 {
6020 asection *sreloc = elf_section_data (p->sec)->sreloc;
6021 if (!htab->elf.dynamic_sections_created)
6022 sreloc = htab->reliplt;
6023 sreloc->size += p->count * sizeof (Elf32_External_Rela);
6024 }
6025
6026 return TRUE;
6027 }
6028
6029 /* Set DF_TEXTREL if we find any dynamic relocs that apply to
6030 read-only sections. */
6031
6032 static bfd_boolean
6033 maybe_set_textrel (struct elf_link_hash_entry *h, void *info)
6034 {
6035 if (h->root.type == bfd_link_hash_indirect)
6036 return TRUE;
6037
6038 if (readonly_dynrelocs (h))
6039 {
6040 ((struct bfd_link_info *) info)->flags |= DF_TEXTREL;
6041
6042 /* Not an error, just cut short the traversal. */
6043 return FALSE;
6044 }
6045 return TRUE;
6046 }
6047
6048 static const unsigned char glink_eh_frame_cie[] =
6049 {
6050 0, 0, 0, 16, /* length. */
6051 0, 0, 0, 0, /* id. */
6052 1, /* CIE version. */
6053 'z', 'R', 0, /* Augmentation string. */
6054 4, /* Code alignment. */
6055 0x7c, /* Data alignment. */
6056 65, /* RA reg. */
6057 1, /* Augmentation size. */
6058 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding. */
6059 DW_CFA_def_cfa, 1, 0 /* def_cfa: r1 offset 0. */
6060 };
6061
6062 /* Set the sizes of the dynamic sections. */
6063
6064 static bfd_boolean
6065 ppc_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
6066 struct bfd_link_info *info)
6067 {
6068 struct ppc_elf_link_hash_table *htab;
6069 asection *s;
6070 bfd_boolean relocs;
6071 bfd *ibfd;
6072
6073 #ifdef DEBUG
6074 fprintf (stderr, "ppc_elf_size_dynamic_sections called\n");
6075 #endif
6076
6077 htab = ppc_elf_hash_table (info);
6078 BFD_ASSERT (htab->elf.dynobj != NULL);
6079
6080 if (elf_hash_table (info)->dynamic_sections_created)
6081 {
6082 /* Set the contents of the .interp section to the interpreter. */
6083 if (info->executable)
6084 {
6085 s = bfd_get_linker_section (htab->elf.dynobj, ".interp");
6086 BFD_ASSERT (s != NULL);
6087 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
6088 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
6089 }
6090 }
6091
6092 if (htab->plt_type == PLT_OLD)
6093 htab->got_header_size = 16;
6094 else if (htab->plt_type == PLT_NEW)
6095 htab->got_header_size = 12;
6096
6097 /* Set up .got offsets for local syms, and space for local dynamic
6098 relocs. */
6099 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
6100 {
6101 bfd_signed_vma *local_got;
6102 bfd_signed_vma *end_local_got;
6103 struct plt_entry **local_plt;
6104 struct plt_entry **end_local_plt;
6105 char *lgot_masks;
6106 bfd_size_type locsymcount;
6107 Elf_Internal_Shdr *symtab_hdr;
6108
6109 if (!is_ppc_elf (ibfd))
6110 continue;
6111
6112 for (s = ibfd->sections; s != NULL; s = s->next)
6113 {
6114 struct elf_dyn_relocs *p;
6115
6116 for (p = ((struct elf_dyn_relocs *)
6117 elf_section_data (s)->local_dynrel);
6118 p != NULL;
6119 p = p->next)
6120 {
6121 if (!bfd_is_abs_section (p->sec)
6122 && bfd_is_abs_section (p->sec->output_section))
6123 {
6124 /* Input section has been discarded, either because
6125 it is a copy of a linkonce section or due to
6126 linker script /DISCARD/, so we'll be discarding
6127 the relocs too. */
6128 }
6129 else if (htab->is_vxworks
6130 && strcmp (p->sec->output_section->name,
6131 ".tls_vars") == 0)
6132 {
6133 /* Relocations in vxworks .tls_vars sections are
6134 handled specially by the loader. */
6135 }
6136 else if (p->count != 0)
6137 {
6138 asection *sreloc = elf_section_data (p->sec)->sreloc;
6139 if (!htab->elf.dynamic_sections_created)
6140 sreloc = htab->reliplt;
6141 sreloc->size += p->count * sizeof (Elf32_External_Rela);
6142 if ((p->sec->output_section->flags
6143 & (SEC_READONLY | SEC_ALLOC))
6144 == (SEC_READONLY | SEC_ALLOC))
6145 info->flags |= DF_TEXTREL;
6146 }
6147 }
6148 }
6149
6150 local_got = elf_local_got_refcounts (ibfd);
6151 if (!local_got)
6152 continue;
6153
6154 symtab_hdr = &elf_symtab_hdr (ibfd);
6155 locsymcount = symtab_hdr->sh_info;
6156 end_local_got = local_got + locsymcount;
6157 local_plt = (struct plt_entry **) end_local_got;
6158 end_local_plt = local_plt + locsymcount;
6159 lgot_masks = (char *) end_local_plt;
6160
6161 for (; local_got < end_local_got; ++local_got, ++lgot_masks)
6162 if (*local_got > 0)
6163 {
6164 unsigned int need = 0;
6165 if ((*lgot_masks & TLS_TLS) != 0)
6166 {
6167 if ((*lgot_masks & TLS_GD) != 0)
6168 need += 8;
6169 if ((*lgot_masks & TLS_LD) != 0)
6170 htab->tlsld_got.refcount += 1;
6171 if ((*lgot_masks & (TLS_TPREL | TLS_TPRELGD)) != 0)
6172 need += 4;
6173 if ((*lgot_masks & TLS_DTPREL) != 0)
6174 need += 4;
6175 }
6176 else
6177 need += 4;
6178 if (need == 0)
6179 *local_got = (bfd_vma) -1;
6180 else
6181 {
6182 *local_got = allocate_got (htab, need);
6183 if (info->shared)
6184 htab->relgot->size += (need
6185 * (sizeof (Elf32_External_Rela) / 4));
6186 }
6187 }
6188 else
6189 *local_got = (bfd_vma) -1;
6190
6191 if (htab->is_vxworks)
6192 continue;
6193
6194 /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */
6195 for (; local_plt < end_local_plt; ++local_plt)
6196 {
6197 struct plt_entry *ent;
6198 bfd_boolean doneone = FALSE;
6199 bfd_vma plt_offset = 0, glink_offset = 0;
6200
6201 for (ent = *local_plt; ent != NULL; ent = ent->next)
6202 if (ent->plt.refcount > 0)
6203 {
6204 s = htab->iplt;
6205
6206 if (!doneone)
6207 {
6208 plt_offset = s->size;
6209 s->size += 4;
6210 }
6211 ent->plt.offset = plt_offset;
6212
6213 s = htab->glink;
6214 if (!doneone || info->shared)
6215 {
6216 glink_offset = s->size;
6217 s->size += GLINK_ENTRY_SIZE;
6218 }
6219 ent->glink_offset = glink_offset;
6220
6221 if (!doneone)
6222 {
6223 htab->reliplt->size += sizeof (Elf32_External_Rela);
6224 doneone = TRUE;
6225 }
6226 }
6227 else
6228 ent->plt.offset = (bfd_vma) -1;
6229 }
6230 }
6231
6232 /* Allocate space for global sym dynamic relocs. */
6233 elf_link_hash_traverse (elf_hash_table (info), allocate_dynrelocs, info);
6234
6235 if (htab->tlsld_got.refcount > 0)
6236 {
6237 htab->tlsld_got.offset = allocate_got (htab, 8);
6238 if (info->shared)
6239 htab->relgot->size += sizeof (Elf32_External_Rela);
6240 }
6241 else
6242 htab->tlsld_got.offset = (bfd_vma) -1;
6243
6244 if (htab->got != NULL && htab->plt_type != PLT_VXWORKS)
6245 {
6246 unsigned int g_o_t = 32768;
6247
6248 /* If we haven't allocated the header, do so now. When we get here,
6249 for old plt/got the got size will be 0 to 32764 (not allocated),
6250 or 32780 to 65536 (header allocated). For new plt/got, the
6251 corresponding ranges are 0 to 32768 and 32780 to 65536. */
6252 if (htab->got->size <= 32768)
6253 {
6254 g_o_t = htab->got->size;
6255 if (htab->plt_type == PLT_OLD)
6256 g_o_t += 4;
6257 htab->got->size += htab->got_header_size;
6258 }
6259
6260 htab->elf.hgot->root.u.def.value = g_o_t;
6261 }
6262 if (info->shared)
6263 {
6264 struct elf_link_hash_entry *sda = htab->sdata[0].sym;
6265 if (sda != NULL
6266 && !(sda->root.type == bfd_link_hash_defined
6267 || sda->root.type == bfd_link_hash_defweak))
6268 {
6269 sda->root.type = bfd_link_hash_defined;
6270 sda->root.u.def.section = htab->elf.hgot->root.u.def.section;
6271 sda->root.u.def.value = htab->elf.hgot->root.u.def.value;
6272 }
6273 }
6274
6275 if (htab->glink != NULL
6276 && htab->glink->size != 0
6277 && htab->elf.dynamic_sections_created)
6278 {
6279 htab->glink_pltresolve = htab->glink->size;
6280 /* Space for the branch table. */
6281 htab->glink->size += htab->glink->size / (GLINK_ENTRY_SIZE / 4) - 4;
6282 /* Pad out to align the start of PLTresolve. */
6283 htab->glink->size += -htab->glink->size & 15;
6284 htab->glink->size += GLINK_PLTRESOLVE;
6285
6286 if (htab->emit_stub_syms)
6287 {
6288 struct elf_link_hash_entry *sh;
6289 sh = elf_link_hash_lookup (&htab->elf, "__glink",
6290 TRUE, FALSE, FALSE);
6291 if (sh == NULL)
6292 return FALSE;
6293 if (sh->root.type == bfd_link_hash_new)
6294 {
6295 sh->root.type = bfd_link_hash_defined;
6296 sh->root.u.def.section = htab->glink;
6297 sh->root.u.def.value = htab->glink_pltresolve;
6298 sh->ref_regular = 1;
6299 sh->def_regular = 1;
6300 sh->ref_regular_nonweak = 1;
6301 sh->forced_local = 1;
6302 sh->non_elf = 0;
6303 }
6304 sh = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve",
6305 TRUE, FALSE, FALSE);
6306 if (sh == NULL)
6307 return FALSE;
6308 if (sh->root.type == bfd_link_hash_new)
6309 {
6310 sh->root.type = bfd_link_hash_defined;
6311 sh->root.u.def.section = htab->glink;
6312 sh->root.u.def.value = htab->glink->size - GLINK_PLTRESOLVE;
6313 sh->ref_regular = 1;
6314 sh->def_regular = 1;
6315 sh->ref_regular_nonweak = 1;
6316 sh->forced_local = 1;
6317 sh->non_elf = 0;
6318 }
6319 }
6320 }
6321
6322 if (htab->glink != NULL
6323 && htab->glink->size != 0
6324 && htab->glink_eh_frame != NULL
6325 && !bfd_is_abs_section (htab->glink_eh_frame->output_section)
6326 && _bfd_elf_eh_frame_present (info))
6327 {
6328 s = htab->glink_eh_frame;
6329 s->size = sizeof (glink_eh_frame_cie) + 20;
6330 if (info->shared)
6331 {
6332 s->size += 4;
6333 if (htab->glink->size - GLINK_PLTRESOLVE + 8 >= 256)
6334 s->size += 4;
6335 }
6336 }
6337
6338 /* We've now determined the sizes of the various dynamic sections.
6339 Allocate memory for them. */
6340 relocs = FALSE;
6341 for (s = htab->elf.dynobj->sections; s != NULL; s = s->next)
6342 {
6343 bfd_boolean strip_section = TRUE;
6344
6345 if ((s->flags & SEC_LINKER_CREATED) == 0)
6346 continue;
6347
6348 if (s == htab->plt
6349 || s == htab->got)
6350 {
6351 /* We'd like to strip these sections if they aren't needed, but if
6352 we've exported dynamic symbols from them we must leave them.
6353 It's too late to tell BFD to get rid of the symbols. */
6354 if (htab->elf.hplt != NULL)
6355 strip_section = FALSE;
6356 /* Strip this section if we don't need it; see the
6357 comment below. */
6358 }
6359 else if (s == htab->iplt
6360 || s == htab->glink
6361 || s == htab->glink_eh_frame
6362 || s == htab->sgotplt
6363 || s == htab->sbss
6364 || s == htab->dynbss
6365 || s == htab->dynsbss
6366 || s == htab->sdata[0].section
6367 || s == htab->sdata[1].section)
6368 {
6369 /* Strip these too. */
6370 }
6371 else if (CONST_STRNEQ (bfd_get_section_name (htab->elf.dynobj, s),
6372 ".rela"))
6373 {
6374 if (s->size != 0)
6375 {
6376 /* Remember whether there are any relocation sections. */
6377 relocs = TRUE;
6378
6379 /* We use the reloc_count field as a counter if we need
6380 to copy relocs into the output file. */
6381 s->reloc_count = 0;
6382 }
6383 }
6384 else
6385 {
6386 /* It's not one of our sections, so don't allocate space. */
6387 continue;
6388 }
6389
6390 if (s->size == 0 && strip_section)
6391 {
6392 /* If we don't need this section, strip it from the
6393 output file. This is mostly to handle .rela.bss and
6394 .rela.plt. We must create both sections in
6395 create_dynamic_sections, because they must be created
6396 before the linker maps input sections to output
6397 sections. The linker does that before
6398 adjust_dynamic_symbol is called, and it is that
6399 function which decides whether anything needs to go
6400 into these sections. */
6401 s->flags |= SEC_EXCLUDE;
6402 continue;
6403 }
6404
6405 if ((s->flags & SEC_HAS_CONTENTS) == 0)
6406 continue;
6407
6408 /* Allocate memory for the section contents. */
6409 s->contents = bfd_zalloc (htab->elf.dynobj, s->size);
6410 if (s->contents == NULL)
6411 return FALSE;
6412 }
6413
6414 if (htab->elf.dynamic_sections_created)
6415 {
6416 /* Add some entries to the .dynamic section. We fill in the
6417 values later, in ppc_elf_finish_dynamic_sections, but we
6418 must add the entries now so that we get the correct size for
6419 the .dynamic section. The DT_DEBUG entry is filled in by the
6420 dynamic linker and used by the debugger. */
6421 #define add_dynamic_entry(TAG, VAL) \
6422 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
6423
6424 if (info->executable)
6425 {
6426 if (!add_dynamic_entry (DT_DEBUG, 0))
6427 return FALSE;
6428 }
6429
6430 if (htab->plt != NULL && htab->plt->size != 0)
6431 {
6432 if (!add_dynamic_entry (DT_PLTGOT, 0)
6433 || !add_dynamic_entry (DT_PLTRELSZ, 0)
6434 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
6435 || !add_dynamic_entry (DT_JMPREL, 0))
6436 return FALSE;
6437 }
6438
6439 if (htab->glink != NULL && htab->glink->size != 0)
6440 {
6441 if (!add_dynamic_entry (DT_PPC_GOT, 0))
6442 return FALSE;
6443 if (!htab->no_tls_get_addr_opt
6444 && htab->tls_get_addr != NULL
6445 && htab->tls_get_addr->plt.plist != NULL
6446 && !add_dynamic_entry (DT_PPC_TLSOPT, 0))
6447 return FALSE;
6448 }
6449
6450 if (relocs)
6451 {
6452 if (!add_dynamic_entry (DT_RELA, 0)
6453 || !add_dynamic_entry (DT_RELASZ, 0)
6454 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
6455 return FALSE;
6456 }
6457
6458 /* If any dynamic relocs apply to a read-only section, then we
6459 need a DT_TEXTREL entry. */
6460 if ((info->flags & DF_TEXTREL) == 0)
6461 elf_link_hash_traverse (elf_hash_table (info), maybe_set_textrel,
6462 info);
6463
6464 if ((info->flags & DF_TEXTREL) != 0)
6465 {
6466 if (!add_dynamic_entry (DT_TEXTREL, 0))
6467 return FALSE;
6468 }
6469 if (htab->is_vxworks
6470 && !elf_vxworks_add_dynamic_entries (output_bfd, info))
6471 return FALSE;
6472 }
6473 #undef add_dynamic_entry
6474
6475 if (htab->glink_eh_frame != NULL
6476 && htab->glink_eh_frame->contents != NULL)
6477 {
6478 unsigned char *p = htab->glink_eh_frame->contents;
6479 bfd_vma val;
6480
6481 memcpy (p, glink_eh_frame_cie, sizeof (glink_eh_frame_cie));
6482 /* CIE length (rewrite in case little-endian). */
6483 bfd_put_32 (htab->elf.dynobj, sizeof (glink_eh_frame_cie) - 4, p);
6484 p += sizeof (glink_eh_frame_cie);
6485 /* FDE length. */
6486 val = htab->glink_eh_frame->size - 4 - sizeof (glink_eh_frame_cie);
6487 bfd_put_32 (htab->elf.dynobj, val, p);
6488 p += 4;
6489 /* CIE pointer. */
6490 val = p - htab->glink_eh_frame->contents;
6491 bfd_put_32 (htab->elf.dynobj, val, p);
6492 p += 4;
6493 /* Offset to .glink. Set later. */
6494 p += 4;
6495 /* .glink size. */
6496 bfd_put_32 (htab->elf.dynobj, htab->glink->size, p);
6497 p += 4;
6498 /* Augmentation. */
6499 p += 1;
6500
6501 if (info->shared
6502 && htab->elf.dynamic_sections_created)
6503 {
6504 bfd_vma adv = (htab->glink->size - GLINK_PLTRESOLVE + 8) >> 2;
6505 if (adv < 64)
6506 *p++ = DW_CFA_advance_loc + adv;
6507 else if (adv < 256)
6508 {
6509 *p++ = DW_CFA_advance_loc1;
6510 *p++ = adv;
6511 }
6512 else if (adv < 65536)
6513 {
6514 *p++ = DW_CFA_advance_loc2;
6515 bfd_put_16 (htab->elf.dynobj, adv, p);
6516 p += 2;
6517 }
6518 else
6519 {
6520 *p++ = DW_CFA_advance_loc4;
6521 bfd_put_32 (htab->elf.dynobj, adv, p);
6522 p += 4;
6523 }
6524 *p++ = DW_CFA_register;
6525 *p++ = 65;
6526 p++;
6527 *p++ = DW_CFA_advance_loc + 4;
6528 *p++ = DW_CFA_restore_extended;
6529 *p++ = 65;
6530 }
6531 BFD_ASSERT ((bfd_vma) ((p + 3 - htab->glink_eh_frame->contents) & -4)
6532 == htab->glink_eh_frame->size);
6533 }
6534
6535 return TRUE;
6536 }
6537
6538 /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
6539
6540 static bfd_boolean
6541 ppc_elf_hash_symbol (struct elf_link_hash_entry *h)
6542 {
6543 if (h->plt.plist != NULL
6544 && !h->def_regular
6545 && (!h->pointer_equality_needed
6546 || !h->ref_regular_nonweak))
6547 return FALSE;
6548
6549 return _bfd_elf_hash_symbol (h);
6550 }
6551 \f
6552 #define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0]))
6553
6554 /* Relaxation trampolines. r12 is available for clobbering (r11, is
6555 used for some functions that are allowed to break the ABI). */
6556 static const int shared_stub_entry[] =
6557 {
6558 0x7c0802a6, /* mflr 0 */
6559 0x429f0005, /* bcl 20, 31, .Lxxx */
6560 0x7d8802a6, /* mflr 12 */
6561 0x3d8c0000, /* addis 12, 12, (xxx-.Lxxx)@ha */
6562 0x398c0008, /* addi 12, 12, (xxx-.Lxxx)@l */
6563 0x7c0803a6, /* mtlr 0 */
6564 0x7d8903a6, /* mtctr 12 */
6565 0x4e800420, /* bctr */
6566 };
6567
6568 static const int stub_entry[] =
6569 {
6570 0x3d800000, /* lis 12,xxx@ha */
6571 0x398c0000, /* addi 12,12,xxx@l */
6572 0x7d8903a6, /* mtctr 12 */
6573 0x4e800420, /* bctr */
6574 };
6575
6576 static bfd_boolean
6577 ppc_elf_relax_section (bfd *abfd,
6578 asection *isec,
6579 struct bfd_link_info *link_info,
6580 bfd_boolean *again)
6581 {
6582 struct one_fixup
6583 {
6584 struct one_fixup *next;
6585 asection *tsec;
6586 /* Final link, can use the symbol offset. For a
6587 relocatable link we use the symbol's index. */
6588 bfd_vma toff;
6589 bfd_vma trampoff;
6590 };
6591
6592 Elf_Internal_Shdr *symtab_hdr;
6593 bfd_byte *contents = NULL;
6594 Elf_Internal_Sym *isymbuf = NULL;
6595 Elf_Internal_Rela *internal_relocs = NULL;
6596 Elf_Internal_Rela *irel, *irelend;
6597 struct one_fixup *fixups = NULL;
6598 unsigned changes = 0;
6599 struct ppc_elf_link_hash_table *htab;
6600 bfd_size_type trampoff;
6601 asection *got2;
6602 bfd_boolean maybe_pasted;
6603
6604 *again = FALSE;
6605
6606 /* Nothing to do if there are no relocations, and no need to do
6607 anything with non-alloc or non-code sections. */
6608 if ((isec->flags & SEC_ALLOC) == 0
6609 || (isec->flags & SEC_CODE) == 0
6610 || (isec->flags & SEC_RELOC) == 0
6611 || isec->reloc_count == 0)
6612 return TRUE;
6613
6614 /* We cannot represent the required PIC relocs in the output, so don't
6615 do anything. The linker doesn't support mixing -shared and -r
6616 anyway. */
6617 if (link_info->relocatable && link_info->shared)
6618 return TRUE;
6619
6620 trampoff = (isec->size + 3) & (bfd_vma) -4;
6621 maybe_pasted = (strcmp (isec->output_section->name, ".init") == 0
6622 || strcmp (isec->output_section->name, ".fini") == 0);
6623 /* Space for a branch around any trampolines. */
6624 if (maybe_pasted)
6625 trampoff += 4;
6626
6627 symtab_hdr = &elf_symtab_hdr (abfd);
6628
6629 /* Get a copy of the native relocations. */
6630 internal_relocs = _bfd_elf_link_read_relocs (abfd, isec, NULL, NULL,
6631 link_info->keep_memory);
6632 if (internal_relocs == NULL)
6633 goto error_return;
6634
6635 htab = ppc_elf_hash_table (link_info);
6636 got2 = bfd_get_section_by_name (abfd, ".got2");
6637
6638 irelend = internal_relocs + isec->reloc_count;
6639 for (irel = internal_relocs; irel < irelend; irel++)
6640 {
6641 unsigned long r_type = ELF32_R_TYPE (irel->r_info);
6642 bfd_vma toff, roff;
6643 asection *tsec;
6644 struct one_fixup *f;
6645 size_t insn_offset = 0;
6646 bfd_vma max_branch_offset, val;
6647 bfd_byte *hit_addr;
6648 unsigned long t0;
6649 struct elf_link_hash_entry *h;
6650 struct plt_entry **plist;
6651 unsigned char sym_type;
6652
6653 switch (r_type)
6654 {
6655 case R_PPC_REL24:
6656 case R_PPC_LOCAL24PC:
6657 case R_PPC_PLTREL24:
6658 max_branch_offset = 1 << 25;
6659 break;
6660
6661 case R_PPC_REL14:
6662 case R_PPC_REL14_BRTAKEN:
6663 case R_PPC_REL14_BRNTAKEN:
6664 max_branch_offset = 1 << 15;
6665 break;
6666
6667 default:
6668 continue;
6669 }
6670
6671 /* Get the value of the symbol referred to by the reloc. */
6672 h = NULL;
6673 if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
6674 {
6675 /* A local symbol. */
6676 Elf_Internal_Sym *isym;
6677
6678 /* Read this BFD's local symbols. */
6679 if (isymbuf == NULL)
6680 {
6681 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
6682 if (isymbuf == NULL)
6683 isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
6684 symtab_hdr->sh_info, 0,
6685 NULL, NULL, NULL);
6686 if (isymbuf == 0)
6687 goto error_return;
6688 }
6689 isym = isymbuf + ELF32_R_SYM (irel->r_info);
6690 if (isym->st_shndx == SHN_UNDEF)
6691 tsec = bfd_und_section_ptr;
6692 else if (isym->st_shndx == SHN_ABS)
6693 tsec = bfd_abs_section_ptr;
6694 else if (isym->st_shndx == SHN_COMMON)
6695 tsec = bfd_com_section_ptr;
6696 else
6697 tsec = bfd_section_from_elf_index (abfd, isym->st_shndx);
6698
6699 toff = isym->st_value;
6700 sym_type = ELF_ST_TYPE (isym->st_info);
6701 }
6702 else
6703 {
6704 /* Global symbol handling. */
6705 unsigned long indx;
6706
6707 indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
6708 h = elf_sym_hashes (abfd)[indx];
6709
6710 while (h->root.type == bfd_link_hash_indirect
6711 || h->root.type == bfd_link_hash_warning)
6712 h = (struct elf_link_hash_entry *) h->root.u.i.link;
6713
6714 if (h->root.type == bfd_link_hash_defined
6715 || h->root.type == bfd_link_hash_defweak)
6716 {
6717 tsec = h->root.u.def.section;
6718 toff = h->root.u.def.value;
6719 }
6720 else if (h->root.type == bfd_link_hash_undefined
6721 || h->root.type == bfd_link_hash_undefweak)
6722 {
6723 tsec = bfd_und_section_ptr;
6724 toff = link_info->relocatable ? indx : 0;
6725 }
6726 else
6727 continue;
6728
6729 sym_type = h->type;
6730 }
6731
6732 /* The condition here under which we call find_plt_ent must
6733 match that in relocate_section. If we call find_plt_ent here
6734 but not in relocate_section, or vice versa, then the branch
6735 destination used here may be incorrect. */
6736 plist = NULL;
6737 if (h != NULL)
6738 {
6739 /* We know is_branch_reloc (r_type) is true. */
6740 if (h->type == STT_GNU_IFUNC
6741 || r_type == R_PPC_PLTREL24)
6742 plist = &h->plt.plist;
6743 }
6744 else if (sym_type == STT_GNU_IFUNC
6745 && elf_local_got_offsets (abfd) != NULL)
6746 {
6747 bfd_vma *local_got_offsets = elf_local_got_offsets (abfd);
6748 struct plt_entry **local_plt = (struct plt_entry **)
6749 (local_got_offsets + symtab_hdr->sh_info);
6750 plist = local_plt + ELF32_R_SYM (irel->r_info);
6751 }
6752 if (plist != NULL)
6753 {
6754 bfd_vma addend = 0;
6755 struct plt_entry *ent;
6756
6757 if (r_type == R_PPC_PLTREL24 && link_info->shared)
6758 addend = irel->r_addend;
6759 ent = find_plt_ent (plist, got2, addend);
6760 if (ent != NULL)
6761 {
6762 if (htab->plt_type == PLT_NEW
6763 || h == NULL
6764 || !htab->elf.dynamic_sections_created
6765 || h->dynindx == -1)
6766 {
6767 tsec = htab->glink;
6768 toff = ent->glink_offset;
6769 }
6770 else
6771 {
6772 tsec = htab->plt;
6773 toff = ent->plt.offset;
6774 }
6775 }
6776 }
6777
6778 /* If the branch and target are in the same section, you have
6779 no hope of adding stubs. We'll error out later should the
6780 branch overflow. */
6781 if (tsec == isec)
6782 continue;
6783
6784 /* There probably isn't any reason to handle symbols in
6785 SEC_MERGE sections; SEC_MERGE doesn't seem a likely
6786 attribute for a code section, and we are only looking at
6787 branches. However, implement it correctly here as a
6788 reference for other target relax_section functions. */
6789 if (0 && tsec->sec_info_type == SEC_INFO_TYPE_MERGE)
6790 {
6791 /* At this stage in linking, no SEC_MERGE symbol has been
6792 adjusted, so all references to such symbols need to be
6793 passed through _bfd_merged_section_offset. (Later, in
6794 relocate_section, all SEC_MERGE symbols *except* for
6795 section symbols have been adjusted.)
6796
6797 gas may reduce relocations against symbols in SEC_MERGE
6798 sections to a relocation against the section symbol when
6799 the original addend was zero. When the reloc is against
6800 a section symbol we should include the addend in the
6801 offset passed to _bfd_merged_section_offset, since the
6802 location of interest is the original symbol. On the
6803 other hand, an access to "sym+addend" where "sym" is not
6804 a section symbol should not include the addend; Such an
6805 access is presumed to be an offset from "sym"; The
6806 location of interest is just "sym". */
6807 if (sym_type == STT_SECTION)
6808 toff += irel->r_addend;
6809
6810 toff = _bfd_merged_section_offset (abfd, &tsec,
6811 elf_section_data (tsec)->sec_info,
6812 toff);
6813
6814 if (sym_type != STT_SECTION)
6815 toff += irel->r_addend;
6816 }
6817 /* PLTREL24 addends are special. */
6818 else if (r_type != R_PPC_PLTREL24)
6819 toff += irel->r_addend;
6820
6821 /* Attempted -shared link of non-pic code loses. */
6822 if (tsec->output_section == NULL)
6823 continue;
6824
6825 roff = irel->r_offset;
6826
6827 /* If the branch is in range, no need to do anything. */
6828 if (tsec != bfd_und_section_ptr
6829 && (!link_info->relocatable
6830 /* A relocatable link may have sections moved during
6831 final link, so do not presume they remain in range. */
6832 || tsec->output_section == isec->output_section))
6833 {
6834 bfd_vma symaddr, reladdr;
6835
6836 symaddr = tsec->output_section->vma + tsec->output_offset + toff;
6837 reladdr = isec->output_section->vma + isec->output_offset + roff;
6838 if (symaddr - reladdr + max_branch_offset < 2 * max_branch_offset)
6839 continue;
6840 }
6841
6842 /* Look for an existing fixup to this address. */
6843 for (f = fixups; f ; f = f->next)
6844 if (f->tsec == tsec && f->toff == toff)
6845 break;
6846
6847 if (f == NULL)
6848 {
6849 size_t size;
6850 unsigned long stub_rtype;
6851
6852 val = trampoff - roff;
6853 if (val >= max_branch_offset)
6854 /* Oh dear, we can't reach a trampoline. Don't try to add
6855 one. We'll report an error later. */
6856 continue;
6857
6858 if (link_info->shared)
6859 {
6860 size = 4 * ARRAY_SIZE (shared_stub_entry);
6861 insn_offset = 12;
6862 }
6863 else
6864 {
6865 size = 4 * ARRAY_SIZE (stub_entry);
6866 insn_offset = 0;
6867 }
6868 stub_rtype = R_PPC_RELAX;
6869 if (tsec == htab->plt
6870 || tsec == htab->glink)
6871 {
6872 stub_rtype = R_PPC_RELAX_PLT;
6873 if (r_type == R_PPC_PLTREL24)
6874 stub_rtype = R_PPC_RELAX_PLTREL24;
6875 }
6876
6877 /* Hijack the old relocation. Since we need two
6878 relocations for this use a "composite" reloc. */
6879 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
6880 stub_rtype);
6881 irel->r_offset = trampoff + insn_offset;
6882 if (r_type == R_PPC_PLTREL24
6883 && stub_rtype != R_PPC_RELAX_PLTREL24)
6884 irel->r_addend = 0;
6885
6886 /* Record the fixup so we don't do it again this section. */
6887 f = bfd_malloc (sizeof (*f));
6888 f->next = fixups;
6889 f->tsec = tsec;
6890 f->toff = toff;
6891 f->trampoff = trampoff;
6892 fixups = f;
6893
6894 trampoff += size;
6895 changes++;
6896 }
6897 else
6898 {
6899 val = f->trampoff - roff;
6900 if (val >= max_branch_offset)
6901 continue;
6902
6903 /* Nop out the reloc, since we're finalizing things here. */
6904 irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
6905 }
6906
6907 /* Get the section contents. */
6908 if (contents == NULL)
6909 {
6910 /* Get cached copy if it exists. */
6911 if (elf_section_data (isec)->this_hdr.contents != NULL)
6912 contents = elf_section_data (isec)->this_hdr.contents;
6913 else
6914 {
6915 /* Go get them off disk. */
6916 if (!bfd_malloc_and_get_section (abfd, isec, &contents))
6917 goto error_return;
6918 }
6919 }
6920
6921 /* Fix up the existing branch to hit the trampoline. */
6922 hit_addr = contents + roff;
6923 switch (r_type)
6924 {
6925 case R_PPC_REL24:
6926 case R_PPC_LOCAL24PC:
6927 case R_PPC_PLTREL24:
6928 t0 = bfd_get_32 (abfd, hit_addr);
6929 t0 &= ~0x3fffffc;
6930 t0 |= val & 0x3fffffc;
6931 bfd_put_32 (abfd, t0, hit_addr);
6932 break;
6933
6934 case R_PPC_REL14:
6935 case R_PPC_REL14_BRTAKEN:
6936 case R_PPC_REL14_BRNTAKEN:
6937 t0 = bfd_get_32 (abfd, hit_addr);
6938 t0 &= ~0xfffc;
6939 t0 |= val & 0xfffc;
6940 bfd_put_32 (abfd, t0, hit_addr);
6941 break;
6942 }
6943 }
6944
6945 /* Write out the trampolines. */
6946 if (fixups != NULL)
6947 {
6948 const int *stub;
6949 bfd_byte *dest;
6950 int i, size;
6951
6952 do
6953 {
6954 struct one_fixup *f = fixups;
6955 fixups = fixups->next;
6956 free (f);
6957 }
6958 while (fixups);
6959
6960 contents = bfd_realloc_or_free (contents, trampoff);
6961 if (contents == NULL)
6962 goto error_return;
6963
6964 isec->size = (isec->size + 3) & (bfd_vma) -4;
6965 dest = contents + isec->size;
6966 /* Branch around the trampolines. */
6967 if (maybe_pasted)
6968 {
6969 bfd_vma val = B + trampoff - isec->size;
6970 bfd_put_32 (abfd, val, dest);
6971 dest += 4;
6972 }
6973 isec->size = trampoff;
6974
6975 if (link_info->shared)
6976 {
6977 stub = shared_stub_entry;
6978 size = ARRAY_SIZE (shared_stub_entry);
6979 }
6980 else
6981 {
6982 stub = stub_entry;
6983 size = ARRAY_SIZE (stub_entry);
6984 }
6985
6986 i = 0;
6987 while (dest < contents + trampoff)
6988 {
6989 bfd_put_32 (abfd, stub[i], dest);
6990 i++;
6991 if (i == size)
6992 i = 0;
6993 dest += 4;
6994 }
6995 BFD_ASSERT (i == 0);
6996 }
6997
6998 if (isymbuf != NULL
6999 && symtab_hdr->contents != (unsigned char *) isymbuf)
7000 {
7001 if (! link_info->keep_memory)
7002 free (isymbuf);
7003 else
7004 {
7005 /* Cache the symbols for elf_link_input_bfd. */
7006 symtab_hdr->contents = (unsigned char *) isymbuf;
7007 }
7008 }
7009
7010 if (contents != NULL
7011 && elf_section_data (isec)->this_hdr.contents != contents)
7012 {
7013 if (!changes && !link_info->keep_memory)
7014 free (contents);
7015 else
7016 {
7017 /* Cache the section contents for elf_link_input_bfd. */
7018 elf_section_data (isec)->this_hdr.contents = contents;
7019 }
7020 }
7021
7022 if (changes != 0)
7023 {
7024 /* Append sufficient NOP relocs so we can write out relocation
7025 information for the trampolines. */
7026 Elf_Internal_Shdr *rel_hdr;
7027 Elf_Internal_Rela *new_relocs = bfd_malloc ((changes + isec->reloc_count)
7028 * sizeof (*new_relocs));
7029 unsigned ix;
7030
7031 if (!new_relocs)
7032 goto error_return;
7033 memcpy (new_relocs, internal_relocs,
7034 isec->reloc_count * sizeof (*new_relocs));
7035 for (ix = changes; ix--;)
7036 {
7037 irel = new_relocs + ix + isec->reloc_count;
7038
7039 irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
7040 }
7041 if (internal_relocs != elf_section_data (isec)->relocs)
7042 free (internal_relocs);
7043 elf_section_data (isec)->relocs = new_relocs;
7044 isec->reloc_count += changes;
7045 rel_hdr = _bfd_elf_single_rel_hdr (isec);
7046 rel_hdr->sh_size += changes * rel_hdr->sh_entsize;
7047 }
7048 else if (elf_section_data (isec)->relocs != internal_relocs)
7049 free (internal_relocs);
7050
7051 *again = changes != 0;
7052 if (!*again && link_info->relocatable)
7053 {
7054 /* Convert the internal relax relocs to external form. */
7055 for (irel = internal_relocs; irel < irelend; irel++)
7056 if (ELF32_R_TYPE (irel->r_info) == R_PPC_RELAX)
7057 {
7058 unsigned long r_symndx = ELF32_R_SYM (irel->r_info);
7059
7060 /* Rewrite the reloc and convert one of the trailing nop
7061 relocs to describe this relocation. */
7062 BFD_ASSERT (ELF32_R_TYPE (irelend[-1].r_info) == R_PPC_NONE);
7063 /* The relocs are at the bottom 2 bytes */
7064 irel[0].r_offset += 2;
7065 memmove (irel + 1, irel, (irelend - irel - 1) * sizeof (*irel));
7066 irel[0].r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_HA);
7067 irel[1].r_offset += 4;
7068 irel[1].r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_LO);
7069 irel++;
7070 }
7071 }
7072
7073 return TRUE;
7074
7075 error_return:
7076 if (isymbuf != NULL && (unsigned char *) isymbuf != symtab_hdr->contents)
7077 free (isymbuf);
7078 if (contents != NULL
7079 && elf_section_data (isec)->this_hdr.contents != contents)
7080 free (contents);
7081 if (internal_relocs != NULL
7082 && elf_section_data (isec)->relocs != internal_relocs)
7083 free (internal_relocs);
7084 return FALSE;
7085 }
7086 \f
7087 /* What to do when ld finds relocations against symbols defined in
7088 discarded sections. */
7089
7090 static unsigned int
7091 ppc_elf_action_discarded (asection *sec)
7092 {
7093 if (strcmp (".fixup", sec->name) == 0)
7094 return 0;
7095
7096 if (strcmp (".got2", sec->name) == 0)
7097 return 0;
7098
7099 return _bfd_elf_default_action_discarded (sec);
7100 }
7101 \f
7102 /* Fill in the address for a pointer generated in a linker section. */
7103
7104 static bfd_vma
7105 elf_finish_pointer_linker_section (bfd *input_bfd,
7106 elf_linker_section_t *lsect,
7107 struct elf_link_hash_entry *h,
7108 bfd_vma relocation,
7109 const Elf_Internal_Rela *rel)
7110 {
7111 elf_linker_section_pointers_t *linker_section_ptr;
7112
7113 BFD_ASSERT (lsect != NULL);
7114
7115 if (h != NULL)
7116 {
7117 /* Handle global symbol. */
7118 struct ppc_elf_link_hash_entry *eh;
7119
7120 eh = (struct ppc_elf_link_hash_entry *) h;
7121 BFD_ASSERT (eh->elf.def_regular);
7122 linker_section_ptr = eh->linker_section_pointer;
7123 }
7124 else
7125 {
7126 /* Handle local symbol. */
7127 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
7128
7129 BFD_ASSERT (is_ppc_elf (input_bfd));
7130 BFD_ASSERT (elf_local_ptr_offsets (input_bfd) != NULL);
7131 linker_section_ptr = elf_local_ptr_offsets (input_bfd)[r_symndx];
7132 }
7133
7134 linker_section_ptr = elf_find_pointer_linker_section (linker_section_ptr,
7135 rel->r_addend,
7136 lsect);
7137 BFD_ASSERT (linker_section_ptr != NULL);
7138
7139 /* Offset will always be a multiple of four, so use the bottom bit
7140 as a "written" flag. */
7141 if ((linker_section_ptr->offset & 1) == 0)
7142 {
7143 bfd_put_32 (lsect->section->owner,
7144 relocation + linker_section_ptr->addend,
7145 lsect->section->contents + linker_section_ptr->offset);
7146 linker_section_ptr->offset += 1;
7147 }
7148
7149 relocation = (lsect->section->output_section->vma
7150 + lsect->section->output_offset
7151 + linker_section_ptr->offset - 1
7152 - SYM_VAL (lsect->sym));
7153
7154 #ifdef DEBUG
7155 fprintf (stderr,
7156 "Finish pointer in linker section %s, offset = %ld (0x%lx)\n",
7157 lsect->name, (long) relocation, (long) relocation);
7158 #endif
7159
7160 return relocation;
7161 }
7162
7163 #define PPC_LO(v) ((v) & 0xffff)
7164 #define PPC_HI(v) (((v) >> 16) & 0xffff)
7165 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
7166
7167 static void
7168 write_glink_stub (struct plt_entry *ent, asection *plt_sec, unsigned char *p,
7169 struct bfd_link_info *info)
7170 {
7171 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
7172 bfd *output_bfd = info->output_bfd;
7173 bfd_vma plt;
7174
7175 plt = ((ent->plt.offset & ~1)
7176 + plt_sec->output_section->vma
7177 + plt_sec->output_offset);
7178
7179 if (info->shared)
7180 {
7181 bfd_vma got = 0;
7182
7183 if (ent->addend >= 32768)
7184 got = (ent->addend
7185 + ent->sec->output_section->vma
7186 + ent->sec->output_offset);
7187 else if (htab->elf.hgot != NULL)
7188 got = SYM_VAL (htab->elf.hgot);
7189
7190 plt -= got;
7191
7192 if (plt + 0x8000 < 0x10000)
7193 {
7194 bfd_put_32 (output_bfd, LWZ_11_30 + PPC_LO (plt), p);
7195 p += 4;
7196 bfd_put_32 (output_bfd, MTCTR_11, p);
7197 p += 4;
7198 bfd_put_32 (output_bfd, BCTR, p);
7199 p += 4;
7200 bfd_put_32 (output_bfd, NOP, p);
7201 p += 4;
7202 }
7203 else
7204 {
7205 bfd_put_32 (output_bfd, ADDIS_11_30 + PPC_HA (plt), p);
7206 p += 4;
7207 bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
7208 p += 4;
7209 bfd_put_32 (output_bfd, MTCTR_11, p);
7210 p += 4;
7211 bfd_put_32 (output_bfd, BCTR, p);
7212 p += 4;
7213 }
7214 }
7215 else
7216 {
7217 bfd_put_32 (output_bfd, LIS_11 + PPC_HA (plt), p);
7218 p += 4;
7219 bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
7220 p += 4;
7221 bfd_put_32 (output_bfd, MTCTR_11, p);
7222 p += 4;
7223 bfd_put_32 (output_bfd, BCTR, p);
7224 p += 4;
7225 }
7226 }
7227
7228 /* Return true if symbol is defined statically. */
7229
7230 static bfd_boolean
7231 is_static_defined (struct elf_link_hash_entry *h)
7232 {
7233 return ((h->root.type == bfd_link_hash_defined
7234 || h->root.type == bfd_link_hash_defweak)
7235 && h->root.u.def.section != NULL
7236 && h->root.u.def.section->output_section != NULL);
7237 }
7238
7239 /* If INSN is an opcode that may be used with an @tls operand, return
7240 the transformed insn for TLS optimisation, otherwise return 0. If
7241 REG is non-zero only match an insn with RB or RA equal to REG. */
7242
7243 unsigned int
7244 _bfd_elf_ppc_at_tls_transform (unsigned int insn, unsigned int reg)
7245 {
7246 unsigned int rtra;
7247
7248 if ((insn & (0x3f << 26)) != 31 << 26)
7249 return 0;
7250
7251 if (reg == 0 || ((insn >> 11) & 0x1f) == reg)
7252 rtra = insn & ((1 << 26) - (1 << 16));
7253 else if (((insn >> 16) & 0x1f) == reg)
7254 rtra = (insn & (0x1f << 21)) | ((insn & (0x1f << 11)) << 5);
7255 else
7256 return 0;
7257
7258 if ((insn & (0x3ff << 1)) == 266 << 1)
7259 /* add -> addi. */
7260 insn = 14 << 26;
7261 else if ((insn & (0x1f << 1)) == 23 << 1
7262 && ((insn & (0x1f << 6)) < 14 << 6
7263 || ((insn & (0x1f << 6)) >= 16 << 6
7264 && (insn & (0x1f << 6)) < 24 << 6)))
7265 /* load and store indexed -> dform. */
7266 insn = (32 | ((insn >> 6) & 0x1f)) << 26;
7267 else if ((insn & (((0x1a << 5) | 0x1f) << 1)) == 21 << 1)
7268 /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
7269 insn = ((58 | ((insn >> 6) & 4)) << 26) | ((insn >> 6) & 1);
7270 else if ((insn & (((0x1f << 5) | 0x1f) << 1)) == 341 << 1)
7271 /* lwax -> lwa. */
7272 insn = (58 << 26) | 2;
7273 else
7274 return 0;
7275 insn |= rtra;
7276 return insn;
7277 }
7278
7279 /* If INSN is an opcode that may be used with an @tprel operand, return
7280 the transformed insn for an undefined weak symbol, ie. with the
7281 thread pointer REG operand removed. Otherwise return 0. */
7282
7283 unsigned int
7284 _bfd_elf_ppc_at_tprel_transform (unsigned int insn, unsigned int reg)
7285 {
7286 if ((insn & (0x1f << 16)) == reg << 16
7287 && ((insn & (0x3f << 26)) == 14u << 26 /* addi */
7288 || (insn & (0x3f << 26)) == 15u << 26 /* addis */
7289 || (insn & (0x3f << 26)) == 32u << 26 /* lwz */
7290 || (insn & (0x3f << 26)) == 34u << 26 /* lbz */
7291 || (insn & (0x3f << 26)) == 36u << 26 /* stw */
7292 || (insn & (0x3f << 26)) == 38u << 26 /* stb */
7293 || (insn & (0x3f << 26)) == 40u << 26 /* lhz */
7294 || (insn & (0x3f << 26)) == 42u << 26 /* lha */
7295 || (insn & (0x3f << 26)) == 44u << 26 /* sth */
7296 || (insn & (0x3f << 26)) == 46u << 26 /* lmw */
7297 || (insn & (0x3f << 26)) == 47u << 26 /* stmw */
7298 || (insn & (0x3f << 26)) == 48u << 26 /* lfs */
7299 || (insn & (0x3f << 26)) == 50u << 26 /* lfd */
7300 || (insn & (0x3f << 26)) == 52u << 26 /* stfs */
7301 || (insn & (0x3f << 26)) == 54u << 26 /* stfd */
7302 || ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
7303 && (insn & 3) != 1)
7304 || ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */
7305 && ((insn & 3) == 0 || (insn & 3) == 3))))
7306 {
7307 insn &= ~(0x1f << 16);
7308 }
7309 else if ((insn & (0x1f << 21)) == reg << 21
7310 && ((insn & (0x3e << 26)) == 24u << 26 /* ori, oris */
7311 || (insn & (0x3e << 26)) == 26u << 26 /* xori,xoris */
7312 || (insn & (0x3e << 26)) == 28u << 26 /* andi,andis */))
7313 {
7314 insn &= ~(0x1f << 21);
7315 insn |= (insn & (0x1f << 16)) << 5;
7316 if ((insn & (0x3e << 26)) == 26 << 26 /* xori,xoris */)
7317 insn -= 2 >> 26; /* convert to ori,oris */
7318 }
7319 else
7320 insn = 0;
7321 return insn;
7322 }
7323
7324 static bfd_boolean
7325 is_insn_ds_form (unsigned int insn)
7326 {
7327 return ((insn & (0x3f << 26)) == 58u << 26 /* ld,ldu,lwa */
7328 || (insn & (0x3f << 26)) == 62u << 26 /* std,stdu,stq */
7329 || (insn & (0x3f << 26)) == 57u << 26 /* lfdp */
7330 || (insn & (0x3f << 26)) == 61u << 26 /* stfdp */);
7331 }
7332
7333 static bfd_boolean
7334 is_insn_dq_form (unsigned int insn)
7335 {
7336 return (insn & (0x3f << 26)) == 56u << 26; /* lq */
7337 }
7338
7339 /* The RELOCATE_SECTION function is called by the ELF backend linker
7340 to handle the relocations for a section.
7341
7342 The relocs are always passed as Rela structures; if the section
7343 actually uses Rel structures, the r_addend field will always be
7344 zero.
7345
7346 This function is responsible for adjust the section contents as
7347 necessary, and (if using Rela relocs and generating a
7348 relocatable output file) adjusting the reloc addend as
7349 necessary.
7350
7351 This function does not have to worry about setting the reloc
7352 address or the reloc symbol index.
7353
7354 LOCAL_SYMS is a pointer to the swapped in local symbols.
7355
7356 LOCAL_SECTIONS is an array giving the section in the input file
7357 corresponding to the st_shndx field of each local symbol.
7358
7359 The global hash table entry for the global symbols can be found
7360 via elf_sym_hashes (input_bfd).
7361
7362 When generating relocatable output, this function must handle
7363 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
7364 going to be the section symbol corresponding to the output
7365 section, which means that the addend must be adjusted
7366 accordingly. */
7367
7368 static bfd_boolean
7369 ppc_elf_relocate_section (bfd *output_bfd,
7370 struct bfd_link_info *info,
7371 bfd *input_bfd,
7372 asection *input_section,
7373 bfd_byte *contents,
7374 Elf_Internal_Rela *relocs,
7375 Elf_Internal_Sym *local_syms,
7376 asection **local_sections)
7377 {
7378 Elf_Internal_Shdr *symtab_hdr;
7379 struct elf_link_hash_entry **sym_hashes;
7380 struct ppc_elf_link_hash_table *htab;
7381 Elf_Internal_Rela *rel;
7382 Elf_Internal_Rela *relend;
7383 Elf_Internal_Rela outrel;
7384 asection *got2, *sreloc = NULL;
7385 bfd_vma *local_got_offsets;
7386 bfd_boolean ret = TRUE;
7387 bfd_vma d_offset = (bfd_big_endian (output_bfd) ? 2 : 0);
7388 bfd_boolean is_vxworks_tls;
7389
7390 #ifdef DEBUG
7391 _bfd_error_handler ("ppc_elf_relocate_section called for %B section %A, "
7392 "%ld relocations%s",
7393 input_bfd, input_section,
7394 (long) input_section->reloc_count,
7395 (info->relocatable) ? " (relocatable)" : "");
7396 #endif
7397
7398 got2 = bfd_get_section_by_name (input_bfd, ".got2");
7399
7400 /* Initialize howto table if not already done. */
7401 if (!ppc_elf_howto_table[R_PPC_ADDR32])
7402 ppc_elf_howto_init ();
7403
7404 htab = ppc_elf_hash_table (info);
7405 local_got_offsets = elf_local_got_offsets (input_bfd);
7406 symtab_hdr = &elf_symtab_hdr (input_bfd);
7407 sym_hashes = elf_sym_hashes (input_bfd);
7408 /* We have to handle relocations in vxworks .tls_vars sections
7409 specially, because the dynamic loader is 'weird'. */
7410 is_vxworks_tls = (htab->is_vxworks && info->shared
7411 && !strcmp (input_section->output_section->name,
7412 ".tls_vars"));
7413 rel = relocs;
7414 relend = relocs + input_section->reloc_count;
7415 for (; rel < relend; rel++)
7416 {
7417 enum elf_ppc_reloc_type r_type;
7418 bfd_vma addend;
7419 bfd_reloc_status_type r;
7420 Elf_Internal_Sym *sym;
7421 asection *sec;
7422 struct elf_link_hash_entry *h;
7423 const char *sym_name;
7424 reloc_howto_type *howto;
7425 unsigned long r_symndx;
7426 bfd_vma relocation;
7427 bfd_vma branch_bit, from;
7428 bfd_boolean unresolved_reloc;
7429 bfd_boolean warned;
7430 unsigned int tls_type, tls_mask, tls_gd;
7431 struct plt_entry **ifunc;
7432
7433 r_type = ELF32_R_TYPE (rel->r_info);
7434 sym = NULL;
7435 sec = NULL;
7436 h = NULL;
7437 unresolved_reloc = FALSE;
7438 warned = FALSE;
7439 r_symndx = ELF32_R_SYM (rel->r_info);
7440
7441 if (r_symndx < symtab_hdr->sh_info)
7442 {
7443 sym = local_syms + r_symndx;
7444 sec = local_sections[r_symndx];
7445 sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
7446
7447 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
7448 }
7449 else
7450 {
7451 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
7452 r_symndx, symtab_hdr, sym_hashes,
7453 h, sec, relocation,
7454 unresolved_reloc, warned);
7455
7456 sym_name = h->root.root.string;
7457 }
7458
7459 if (sec != NULL && discarded_section (sec))
7460 {
7461 /* For relocs against symbols from removed linkonce sections,
7462 or sections discarded by a linker script, we just want the
7463 section contents zeroed. Avoid any special processing. */
7464 howto = NULL;
7465 if (r_type < R_PPC_max)
7466 howto = ppc_elf_howto_table[r_type];
7467 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
7468 rel, 1, relend, howto, 0, contents);
7469 }
7470
7471 if (info->relocatable)
7472 {
7473 if (got2 != NULL
7474 && r_type == R_PPC_PLTREL24
7475 && rel->r_addend >= 32768)
7476 {
7477 /* R_PPC_PLTREL24 is rather special. If non-zero, the
7478 addend specifies the GOT pointer offset within .got2. */
7479 rel->r_addend += got2->output_offset;
7480 }
7481 continue;
7482 }
7483
7484 /* TLS optimizations. Replace instruction sequences and relocs
7485 based on information we collected in tls_optimize. We edit
7486 RELOCS so that --emit-relocs will output something sensible
7487 for the final instruction stream. */
7488 tls_mask = 0;
7489 tls_gd = 0;
7490 if (h != NULL)
7491 tls_mask = ((struct ppc_elf_link_hash_entry *) h)->tls_mask;
7492 else if (local_got_offsets != NULL)
7493 {
7494 struct plt_entry **local_plt;
7495 char *lgot_masks;
7496 local_plt
7497 = (struct plt_entry **) (local_got_offsets + symtab_hdr->sh_info);
7498 lgot_masks = (char *) (local_plt + symtab_hdr->sh_info);
7499 tls_mask = lgot_masks[r_symndx];
7500 }
7501
7502 /* Ensure reloc mapping code below stays sane. */
7503 if ((R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TLSGD16 & 3)
7504 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TLSGD16_LO & 3)
7505 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TLSGD16_HI & 3)
7506 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TLSGD16_HA & 3)
7507 || (R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TPREL16 & 3)
7508 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TPREL16_LO & 3)
7509 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TPREL16_HI & 3)
7510 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TPREL16_HA & 3))
7511 abort ();
7512 switch (r_type)
7513 {
7514 default:
7515 break;
7516
7517 case R_PPC_GOT_TPREL16:
7518 case R_PPC_GOT_TPREL16_LO:
7519 if ((tls_mask & TLS_TLS) != 0
7520 && (tls_mask & TLS_TPREL) == 0)
7521 {
7522 bfd_vma insn;
7523
7524 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset);
7525 insn &= 31 << 21;
7526 insn |= 0x3c020000; /* addis 0,2,0 */
7527 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset);
7528 r_type = R_PPC_TPREL16_HA;
7529 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7530 }
7531 break;
7532
7533 case R_PPC_TLS:
7534 if ((tls_mask & TLS_TLS) != 0
7535 && (tls_mask & TLS_TPREL) == 0)
7536 {
7537 bfd_vma insn;
7538
7539 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
7540 insn = _bfd_elf_ppc_at_tls_transform (insn, 2);
7541 if (insn == 0)
7542 abort ();
7543 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
7544 r_type = R_PPC_TPREL16_LO;
7545 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7546
7547 /* Was PPC_TLS which sits on insn boundary, now
7548 PPC_TPREL16_LO which is at low-order half-word. */
7549 rel->r_offset += d_offset;
7550 }
7551 break;
7552
7553 case R_PPC_GOT_TLSGD16_HI:
7554 case R_PPC_GOT_TLSGD16_HA:
7555 tls_gd = TLS_TPRELGD;
7556 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
7557 goto tls_gdld_hi;
7558 break;
7559
7560 case R_PPC_GOT_TLSLD16_HI:
7561 case R_PPC_GOT_TLSLD16_HA:
7562 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
7563 {
7564 tls_gdld_hi:
7565 if ((tls_mask & tls_gd) != 0)
7566 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
7567 + R_PPC_GOT_TPREL16);
7568 else
7569 {
7570 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
7571 rel->r_offset -= d_offset;
7572 r_type = R_PPC_NONE;
7573 }
7574 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7575 }
7576 break;
7577
7578 case R_PPC_GOT_TLSGD16:
7579 case R_PPC_GOT_TLSGD16_LO:
7580 tls_gd = TLS_TPRELGD;
7581 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
7582 goto tls_ldgd_opt;
7583 break;
7584
7585 case R_PPC_GOT_TLSLD16:
7586 case R_PPC_GOT_TLSLD16_LO:
7587 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
7588 {
7589 unsigned int insn1, insn2;
7590 bfd_vma offset;
7591
7592 tls_ldgd_opt:
7593 offset = (bfd_vma) -1;
7594 /* If not using the newer R_PPC_TLSGD/LD to mark
7595 __tls_get_addr calls, we must trust that the call
7596 stays with its arg setup insns, ie. that the next
7597 reloc is the __tls_get_addr call associated with
7598 the current reloc. Edit both insns. */
7599 if (input_section->has_tls_get_addr_call
7600 && rel + 1 < relend
7601 && branch_reloc_hash_match (input_bfd, rel + 1,
7602 htab->tls_get_addr))
7603 offset = rel[1].r_offset;
7604 if ((tls_mask & tls_gd) != 0)
7605 {
7606 /* IE */
7607 insn1 = bfd_get_32 (output_bfd,
7608 contents + rel->r_offset - d_offset);
7609 insn1 &= (1 << 26) - 1;
7610 insn1 |= 32 << 26; /* lwz */
7611 if (offset != (bfd_vma) -1)
7612 {
7613 rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
7614 insn2 = 0x7c631214; /* add 3,3,2 */
7615 bfd_put_32 (output_bfd, insn2, contents + offset);
7616 }
7617 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
7618 + R_PPC_GOT_TPREL16);
7619 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7620 }
7621 else
7622 {
7623 /* LE */
7624 insn1 = 0x3c620000; /* addis 3,2,0 */
7625 if (tls_gd == 0)
7626 {
7627 /* Was an LD reloc. */
7628 for (r_symndx = 0;
7629 r_symndx < symtab_hdr->sh_info;
7630 r_symndx++)
7631 if (local_sections[r_symndx] == sec)
7632 break;
7633 if (r_symndx >= symtab_hdr->sh_info)
7634 r_symndx = STN_UNDEF;
7635 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
7636 if (r_symndx != STN_UNDEF)
7637 rel->r_addend -= (local_syms[r_symndx].st_value
7638 + sec->output_offset
7639 + sec->output_section->vma);
7640 }
7641 r_type = R_PPC_TPREL16_HA;
7642 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7643 if (offset != (bfd_vma) -1)
7644 {
7645 rel[1].r_info = ELF32_R_INFO (r_symndx, R_PPC_TPREL16_LO);
7646 rel[1].r_offset = offset + d_offset;
7647 rel[1].r_addend = rel->r_addend;
7648 insn2 = 0x38630000; /* addi 3,3,0 */
7649 bfd_put_32 (output_bfd, insn2, contents + offset);
7650 }
7651 }
7652 bfd_put_32 (output_bfd, insn1,
7653 contents + rel->r_offset - d_offset);
7654 if (tls_gd == 0)
7655 {
7656 /* We changed the symbol on an LD reloc. Start over
7657 in order to get h, sym, sec etc. right. */
7658 rel--;
7659 continue;
7660 }
7661 }
7662 break;
7663
7664 case R_PPC_TLSGD:
7665 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
7666 {
7667 unsigned int insn2;
7668 bfd_vma offset = rel->r_offset;
7669
7670 if ((tls_mask & TLS_TPRELGD) != 0)
7671 {
7672 /* IE */
7673 r_type = R_PPC_NONE;
7674 insn2 = 0x7c631214; /* add 3,3,2 */
7675 }
7676 else
7677 {
7678 /* LE */
7679 r_type = R_PPC_TPREL16_LO;
7680 rel->r_offset += d_offset;
7681 insn2 = 0x38630000; /* addi 3,3,0 */
7682 }
7683 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7684 bfd_put_32 (output_bfd, insn2, contents + offset);
7685 /* Zap the reloc on the _tls_get_addr call too. */
7686 BFD_ASSERT (offset == rel[1].r_offset);
7687 rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
7688 }
7689 break;
7690
7691 case R_PPC_TLSLD:
7692 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
7693 {
7694 unsigned int insn2;
7695
7696 for (r_symndx = 0;
7697 r_symndx < symtab_hdr->sh_info;
7698 r_symndx++)
7699 if (local_sections[r_symndx] == sec)
7700 break;
7701 if (r_symndx >= symtab_hdr->sh_info)
7702 r_symndx = STN_UNDEF;
7703 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
7704 if (r_symndx != STN_UNDEF)
7705 rel->r_addend -= (local_syms[r_symndx].st_value
7706 + sec->output_offset
7707 + sec->output_section->vma);
7708
7709 rel->r_info = ELF32_R_INFO (r_symndx, R_PPC_TPREL16_LO);
7710 rel->r_offset += d_offset;
7711 insn2 = 0x38630000; /* addi 3,3,0 */
7712 bfd_put_32 (output_bfd, insn2,
7713 contents + rel->r_offset - d_offset);
7714 /* Zap the reloc on the _tls_get_addr call too. */
7715 BFD_ASSERT (rel->r_offset - d_offset == rel[1].r_offset);
7716 rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
7717 rel--;
7718 continue;
7719 }
7720 break;
7721 }
7722
7723 /* Handle other relocations that tweak non-addend part of insn. */
7724 branch_bit = 0;
7725 switch (r_type)
7726 {
7727 default:
7728 break;
7729
7730 /* Branch taken prediction relocations. */
7731 case R_PPC_ADDR14_BRTAKEN:
7732 case R_PPC_REL14_BRTAKEN:
7733 branch_bit = BRANCH_PREDICT_BIT;
7734 /* Fall thru */
7735
7736 /* Branch not taken prediction relocations. */
7737 case R_PPC_ADDR14_BRNTAKEN:
7738 case R_PPC_REL14_BRNTAKEN:
7739 {
7740 bfd_vma insn;
7741
7742 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
7743 insn &= ~BRANCH_PREDICT_BIT;
7744 insn |= branch_bit;
7745
7746 from = (rel->r_offset
7747 + input_section->output_offset
7748 + input_section->output_section->vma);
7749
7750 /* Invert 'y' bit if not the default. */
7751 if ((bfd_signed_vma) (relocation + rel->r_addend - from) < 0)
7752 insn ^= BRANCH_PREDICT_BIT;
7753
7754 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
7755 break;
7756 }
7757 }
7758
7759 ifunc = NULL;
7760 if (!htab->is_vxworks)
7761 {
7762 struct plt_entry *ent;
7763
7764 if (h != NULL)
7765 {
7766 if (h->type == STT_GNU_IFUNC)
7767 ifunc = &h->plt.plist;
7768 }
7769 else if (local_got_offsets != NULL
7770 && ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
7771 {
7772 struct plt_entry **local_plt;
7773
7774 local_plt = (struct plt_entry **) (local_got_offsets
7775 + symtab_hdr->sh_info);
7776 ifunc = local_plt + r_symndx;
7777 }
7778
7779 ent = NULL;
7780 if (ifunc != NULL
7781 && (!info->shared
7782 || is_branch_reloc (r_type)))
7783 {
7784 addend = 0;
7785 if (r_type == R_PPC_PLTREL24 && info->shared)
7786 addend = rel->r_addend;
7787 ent = find_plt_ent (ifunc, got2, addend);
7788 }
7789 if (ent != NULL)
7790 {
7791 if (h == NULL && (ent->plt.offset & 1) == 0)
7792 {
7793 Elf_Internal_Rela rela;
7794 bfd_byte *loc;
7795
7796 rela.r_offset = (htab->iplt->output_section->vma
7797 + htab->iplt->output_offset
7798 + ent->plt.offset);
7799 rela.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
7800 rela.r_addend = relocation;
7801 loc = htab->reliplt->contents;
7802 loc += (htab->reliplt->reloc_count++
7803 * sizeof (Elf32_External_Rela));
7804 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
7805
7806 ent->plt.offset |= 1;
7807 }
7808 if (h == NULL && (ent->glink_offset & 1) == 0)
7809 {
7810 unsigned char *p = ((unsigned char *) htab->glink->contents
7811 + ent->glink_offset);
7812 write_glink_stub (ent, htab->iplt, p, info);
7813 ent->glink_offset |= 1;
7814 }
7815
7816 unresolved_reloc = FALSE;
7817 if (htab->plt_type == PLT_NEW
7818 || !htab->elf.dynamic_sections_created
7819 || h == NULL)
7820 relocation = (htab->glink->output_section->vma
7821 + htab->glink->output_offset
7822 + (ent->glink_offset & ~1));
7823 else
7824 relocation = (htab->plt->output_section->vma
7825 + htab->plt->output_offset
7826 + ent->plt.offset);
7827 }
7828 }
7829
7830 addend = rel->r_addend;
7831 tls_type = 0;
7832 howto = NULL;
7833 if (r_type < R_PPC_max)
7834 howto = ppc_elf_howto_table[r_type];
7835 switch (r_type)
7836 {
7837 default:
7838 info->callbacks->einfo
7839 (_("%P: %B: unknown relocation type %d for symbol %s\n"),
7840 input_bfd, (int) r_type, sym_name);
7841
7842 bfd_set_error (bfd_error_bad_value);
7843 ret = FALSE;
7844 continue;
7845
7846 case R_PPC_NONE:
7847 case R_PPC_TLS:
7848 case R_PPC_TLSGD:
7849 case R_PPC_TLSLD:
7850 case R_PPC_EMB_MRKREF:
7851 case R_PPC_GNU_VTINHERIT:
7852 case R_PPC_GNU_VTENTRY:
7853 continue;
7854
7855 /* GOT16 relocations. Like an ADDR16 using the symbol's
7856 address in the GOT as relocation value instead of the
7857 symbol's value itself. Also, create a GOT entry for the
7858 symbol and put the symbol value there. */
7859 case R_PPC_GOT_TLSGD16:
7860 case R_PPC_GOT_TLSGD16_LO:
7861 case R_PPC_GOT_TLSGD16_HI:
7862 case R_PPC_GOT_TLSGD16_HA:
7863 tls_type = TLS_TLS | TLS_GD;
7864 goto dogot;
7865
7866 case R_PPC_GOT_TLSLD16:
7867 case R_PPC_GOT_TLSLD16_LO:
7868 case R_PPC_GOT_TLSLD16_HI:
7869 case R_PPC_GOT_TLSLD16_HA:
7870 tls_type = TLS_TLS | TLS_LD;
7871 goto dogot;
7872
7873 case R_PPC_GOT_TPREL16:
7874 case R_PPC_GOT_TPREL16_LO:
7875 case R_PPC_GOT_TPREL16_HI:
7876 case R_PPC_GOT_TPREL16_HA:
7877 tls_type = TLS_TLS | TLS_TPREL;
7878 goto dogot;
7879
7880 case R_PPC_GOT_DTPREL16:
7881 case R_PPC_GOT_DTPREL16_LO:
7882 case R_PPC_GOT_DTPREL16_HI:
7883 case R_PPC_GOT_DTPREL16_HA:
7884 tls_type = TLS_TLS | TLS_DTPREL;
7885 goto dogot;
7886
7887 case R_PPC_GOT16:
7888 case R_PPC_GOT16_LO:
7889 case R_PPC_GOT16_HI:
7890 case R_PPC_GOT16_HA:
7891 tls_mask = 0;
7892 dogot:
7893 {
7894 /* Relocation is to the entry for this symbol in the global
7895 offset table. */
7896 bfd_vma off;
7897 bfd_vma *offp;
7898 unsigned long indx;
7899
7900 if (htab->got == NULL)
7901 abort ();
7902
7903 indx = 0;
7904 if (tls_type == (TLS_TLS | TLS_LD)
7905 && (h == NULL
7906 || !h->def_dynamic))
7907 offp = &htab->tlsld_got.offset;
7908 else if (h != NULL)
7909 {
7910 bfd_boolean dyn;
7911 dyn = htab->elf.dynamic_sections_created;
7912 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
7913 || (info->shared
7914 && SYMBOL_REFERENCES_LOCAL (info, h)))
7915 /* This is actually a static link, or it is a
7916 -Bsymbolic link and the symbol is defined
7917 locally, or the symbol was forced to be local
7918 because of a version file. */
7919 ;
7920 else
7921 {
7922 BFD_ASSERT (h->dynindx != -1);
7923 indx = h->dynindx;
7924 unresolved_reloc = FALSE;
7925 }
7926 offp = &h->got.offset;
7927 }
7928 else
7929 {
7930 if (local_got_offsets == NULL)
7931 abort ();
7932 offp = &local_got_offsets[r_symndx];
7933 }
7934
7935 /* The offset must always be a multiple of 4. We use the
7936 least significant bit to record whether we have already
7937 processed this entry. */
7938 off = *offp;
7939 if ((off & 1) != 0)
7940 off &= ~1;
7941 else
7942 {
7943 unsigned int tls_m = (tls_mask
7944 & (TLS_LD | TLS_GD | TLS_DTPREL
7945 | TLS_TPREL | TLS_TPRELGD));
7946
7947 if (offp == &htab->tlsld_got.offset)
7948 tls_m = TLS_LD;
7949 else if (h == NULL
7950 || !h->def_dynamic)
7951 tls_m &= ~TLS_LD;
7952
7953 /* We might have multiple got entries for this sym.
7954 Initialize them all. */
7955 do
7956 {
7957 int tls_ty = 0;
7958
7959 if ((tls_m & TLS_LD) != 0)
7960 {
7961 tls_ty = TLS_TLS | TLS_LD;
7962 tls_m &= ~TLS_LD;
7963 }
7964 else if ((tls_m & TLS_GD) != 0)
7965 {
7966 tls_ty = TLS_TLS | TLS_GD;
7967 tls_m &= ~TLS_GD;
7968 }
7969 else if ((tls_m & TLS_DTPREL) != 0)
7970 {
7971 tls_ty = TLS_TLS | TLS_DTPREL;
7972 tls_m &= ~TLS_DTPREL;
7973 }
7974 else if ((tls_m & (TLS_TPREL | TLS_TPRELGD)) != 0)
7975 {
7976 tls_ty = TLS_TLS | TLS_TPREL;
7977 tls_m = 0;
7978 }
7979
7980 /* Generate relocs for the dynamic linker. */
7981 if ((info->shared || indx != 0)
7982 && (offp == &htab->tlsld_got.offset
7983 || h == NULL
7984 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
7985 || h->root.type != bfd_link_hash_undefweak))
7986 {
7987 asection *rsec = htab->relgot;
7988 bfd_byte * loc;
7989
7990 outrel.r_offset = (htab->got->output_section->vma
7991 + htab->got->output_offset
7992 + off);
7993 outrel.r_addend = 0;
7994 if (tls_ty & (TLS_LD | TLS_GD))
7995 {
7996 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPMOD32);
7997 if (tls_ty == (TLS_TLS | TLS_GD))
7998 {
7999 loc = rsec->contents;
8000 loc += (rsec->reloc_count++
8001 * sizeof (Elf32_External_Rela));
8002 bfd_elf32_swap_reloca_out (output_bfd,
8003 &outrel, loc);
8004 outrel.r_offset += 4;
8005 outrel.r_info
8006 = ELF32_R_INFO (indx, R_PPC_DTPREL32);
8007 }
8008 }
8009 else if (tls_ty == (TLS_TLS | TLS_DTPREL))
8010 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPREL32);
8011 else if (tls_ty == (TLS_TLS | TLS_TPREL))
8012 outrel.r_info = ELF32_R_INFO (indx, R_PPC_TPREL32);
8013 else if (indx != 0)
8014 outrel.r_info = ELF32_R_INFO (indx, R_PPC_GLOB_DAT);
8015 else if (ifunc != NULL)
8016 outrel.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
8017 else
8018 outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
8019 if (indx == 0 && tls_ty != (TLS_TLS | TLS_LD))
8020 {
8021 outrel.r_addend += relocation;
8022 if (tls_ty & (TLS_GD | TLS_DTPREL | TLS_TPREL))
8023 outrel.r_addend -= htab->elf.tls_sec->vma;
8024 }
8025 loc = rsec->contents;
8026 loc += (rsec->reloc_count++
8027 * sizeof (Elf32_External_Rela));
8028 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
8029 }
8030
8031 /* Init the .got section contents if we're not
8032 emitting a reloc. */
8033 else
8034 {
8035 bfd_vma value = relocation;
8036
8037 if (tls_ty == (TLS_TLS | TLS_LD))
8038 value = 1;
8039 else if (tls_ty != 0)
8040 {
8041 value -= htab->elf.tls_sec->vma + DTP_OFFSET;
8042 if (tls_ty == (TLS_TLS | TLS_TPREL))
8043 value += DTP_OFFSET - TP_OFFSET;
8044
8045 if (tls_ty == (TLS_TLS | TLS_GD))
8046 {
8047 bfd_put_32 (output_bfd, value,
8048 htab->got->contents + off + 4);
8049 value = 1;
8050 }
8051 }
8052 bfd_put_32 (output_bfd, value,
8053 htab->got->contents + off);
8054 }
8055
8056 off += 4;
8057 if (tls_ty & (TLS_LD | TLS_GD))
8058 off += 4;
8059 }
8060 while (tls_m != 0);
8061
8062 off = *offp;
8063 *offp = off | 1;
8064 }
8065
8066 if (off >= (bfd_vma) -2)
8067 abort ();
8068
8069 if ((tls_type & TLS_TLS) != 0)
8070 {
8071 if (tls_type != (TLS_TLS | TLS_LD))
8072 {
8073 if ((tls_mask & TLS_LD) != 0
8074 && !(h == NULL
8075 || !h->def_dynamic))
8076 off += 8;
8077 if (tls_type != (TLS_TLS | TLS_GD))
8078 {
8079 if ((tls_mask & TLS_GD) != 0)
8080 off += 8;
8081 if (tls_type != (TLS_TLS | TLS_DTPREL))
8082 {
8083 if ((tls_mask & TLS_DTPREL) != 0)
8084 off += 4;
8085 }
8086 }
8087 }
8088 }
8089
8090 relocation = (htab->got->output_section->vma
8091 + htab->got->output_offset
8092 + off
8093 - SYM_VAL (htab->elf.hgot));
8094
8095 /* Addends on got relocations don't make much sense.
8096 x+off@got is actually x@got+off, and since the got is
8097 generated by a hash table traversal, the value in the
8098 got at entry m+n bears little relation to the entry m. */
8099 if (addend != 0)
8100 info->callbacks->einfo
8101 (_("%P: %H: non-zero addend on %s reloc against `%s'\n"),
8102 input_bfd, input_section, rel->r_offset,
8103 howto->name,
8104 sym_name);
8105 }
8106 break;
8107
8108 /* Relocations that need no special processing. */
8109 case R_PPC_LOCAL24PC:
8110 /* It makes no sense to point a local relocation
8111 at a symbol not in this object. */
8112 if (unresolved_reloc)
8113 {
8114 if (! (*info->callbacks->undefined_symbol) (info,
8115 h->root.root.string,
8116 input_bfd,
8117 input_section,
8118 rel->r_offset,
8119 TRUE))
8120 return FALSE;
8121 continue;
8122 }
8123 break;
8124
8125 case R_PPC_DTPREL16:
8126 case R_PPC_DTPREL16_LO:
8127 case R_PPC_DTPREL16_HI:
8128 case R_PPC_DTPREL16_HA:
8129 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
8130 break;
8131
8132 /* Relocations that may need to be propagated if this is a shared
8133 object. */
8134 case R_PPC_TPREL16:
8135 case R_PPC_TPREL16_LO:
8136 case R_PPC_TPREL16_HI:
8137 case R_PPC_TPREL16_HA:
8138 if (h != NULL
8139 && h->root.type == bfd_link_hash_undefweak
8140 && h->dynindx == -1)
8141 {
8142 /* Make this relocation against an undefined weak symbol
8143 resolve to zero. This is really just a tweak, since
8144 code using weak externs ought to check that they are
8145 defined before using them. */
8146 bfd_byte *p = contents + rel->r_offset - d_offset;
8147 unsigned int insn = bfd_get_32 (output_bfd, p);
8148 insn = _bfd_elf_ppc_at_tprel_transform (insn, 2);
8149 if (insn != 0)
8150 bfd_put_32 (output_bfd, insn, p);
8151 break;
8152 }
8153 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
8154 /* The TPREL16 relocs shouldn't really be used in shared
8155 libs as they will result in DT_TEXTREL being set, but
8156 support them anyway. */
8157 goto dodyn;
8158
8159 case R_PPC_TPREL32:
8160 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
8161 goto dodyn;
8162
8163 case R_PPC_DTPREL32:
8164 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
8165 goto dodyn;
8166
8167 case R_PPC_DTPMOD32:
8168 relocation = 1;
8169 addend = 0;
8170 goto dodyn;
8171
8172 case R_PPC_REL16:
8173 case R_PPC_REL16_LO:
8174 case R_PPC_REL16_HI:
8175 case R_PPC_REL16_HA:
8176 break;
8177
8178 case R_PPC_REL32:
8179 if (h == NULL || h == htab->elf.hgot)
8180 break;
8181 /* fall through */
8182
8183 case R_PPC_ADDR32:
8184 case R_PPC_ADDR16:
8185 case R_PPC_ADDR16_LO:
8186 case R_PPC_ADDR16_HI:
8187 case R_PPC_ADDR16_HA:
8188 case R_PPC_UADDR32:
8189 case R_PPC_UADDR16:
8190 goto dodyn;
8191
8192 case R_PPC_VLE_REL8:
8193 case R_PPC_VLE_REL15:
8194 case R_PPC_VLE_REL24:
8195 case R_PPC_REL24:
8196 case R_PPC_REL14:
8197 case R_PPC_REL14_BRTAKEN:
8198 case R_PPC_REL14_BRNTAKEN:
8199 /* If these relocations are not to a named symbol, they can be
8200 handled right here, no need to bother the dynamic linker. */
8201 if (SYMBOL_CALLS_LOCAL (info, h)
8202 || h == htab->elf.hgot)
8203 break;
8204 /* fall through */
8205
8206 case R_PPC_ADDR24:
8207 case R_PPC_ADDR14:
8208 case R_PPC_ADDR14_BRTAKEN:
8209 case R_PPC_ADDR14_BRNTAKEN:
8210 if (h != NULL && !info->shared)
8211 break;
8212 /* fall through */
8213
8214 dodyn:
8215 if ((input_section->flags & SEC_ALLOC) == 0
8216 || is_vxworks_tls)
8217 break;
8218
8219 if ((info->shared
8220 && !(h != NULL
8221 && ((h->root.type == bfd_link_hash_undefined
8222 && (ELF_ST_VISIBILITY (h->other) == STV_HIDDEN
8223 || ELF_ST_VISIBILITY (h->other) == STV_INTERNAL))
8224 || (h->root.type == bfd_link_hash_undefweak
8225 && ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)))
8226 && (must_be_dyn_reloc (info, r_type)
8227 || !SYMBOL_CALLS_LOCAL (info, h)))
8228 || (ELIMINATE_COPY_RELOCS
8229 && !info->shared
8230 && h != NULL
8231 && h->dynindx != -1
8232 && !h->non_got_ref
8233 && !h->def_regular))
8234 {
8235 int skip;
8236 bfd_byte * loc;
8237 #ifdef DEBUG
8238 fprintf (stderr, "ppc_elf_relocate_section needs to "
8239 "create relocation for %s\n",
8240 (h && h->root.root.string
8241 ? h->root.root.string : "<unknown>"));
8242 #endif
8243
8244 /* When generating a shared object, these relocations
8245 are copied into the output file to be resolved at run
8246 time. */
8247 if (sreloc == NULL)
8248 {
8249 sreloc = elf_section_data (input_section)->sreloc;
8250 if (!htab->elf.dynamic_sections_created)
8251 sreloc = htab->reliplt;
8252 if (sreloc == NULL)
8253 return FALSE;
8254 }
8255
8256 skip = 0;
8257 outrel.r_offset = _bfd_elf_section_offset (output_bfd, info,
8258 input_section,
8259 rel->r_offset);
8260 if (outrel.r_offset == (bfd_vma) -1
8261 || outrel.r_offset == (bfd_vma) -2)
8262 skip = (int) outrel.r_offset;
8263 outrel.r_offset += (input_section->output_section->vma
8264 + input_section->output_offset);
8265
8266 if (skip)
8267 memset (&outrel, 0, sizeof outrel);
8268 else if ((h != NULL
8269 && (h->root.type == bfd_link_hash_undefined
8270 || h->root.type == bfd_link_hash_undefweak))
8271 || !SYMBOL_REFERENCES_LOCAL (info, h))
8272 {
8273 BFD_ASSERT (h->dynindx != -1);
8274 unresolved_reloc = FALSE;
8275 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
8276 outrel.r_addend = rel->r_addend;
8277 }
8278 else
8279 {
8280 outrel.r_addend = relocation + rel->r_addend;
8281
8282 if (r_type != R_PPC_ADDR32)
8283 {
8284 long indx = 0;
8285
8286 if (ifunc != NULL)
8287 {
8288 /* If we get here when building a static
8289 executable, then the libc startup function
8290 responsible for applying indirect function
8291 relocations is going to complain about
8292 the reloc type.
8293 If we get here when building a dynamic
8294 executable, it will be because we have
8295 a text relocation. The dynamic loader
8296 will set the text segment writable and
8297 non-executable to apply text relocations.
8298 So we'll segfault when trying to run the
8299 indirection function to resolve the reloc. */
8300 info->callbacks->einfo
8301 (_("%P: %H: relocation %s for indirect "
8302 "function %s unsupported\n"),
8303 input_bfd, input_section, rel->r_offset,
8304 howto->name,
8305 sym_name);
8306 ret = FALSE;
8307 }
8308 else if (r_symndx == STN_UNDEF || bfd_is_abs_section (sec))
8309 ;
8310 else if (sec == NULL || sec->owner == NULL)
8311 {
8312 bfd_set_error (bfd_error_bad_value);
8313 ret = FALSE;
8314 }
8315 else
8316 {
8317 asection *osec;
8318
8319 /* We are turning this relocation into one
8320 against a section symbol. It would be
8321 proper to subtract the symbol's value,
8322 osec->vma, from the emitted reloc addend,
8323 but ld.so expects buggy relocs.
8324 FIXME: Why not always use a zero index? */
8325 osec = sec->output_section;
8326 indx = elf_section_data (osec)->dynindx;
8327 if (indx == 0)
8328 {
8329 osec = htab->elf.text_index_section;
8330 indx = elf_section_data (osec)->dynindx;
8331 }
8332 BFD_ASSERT (indx != 0);
8333 #ifdef DEBUG
8334 if (indx == 0)
8335 printf ("indx=%ld section=%s flags=%08x name=%s\n",
8336 indx, osec->name, osec->flags,
8337 h->root.root.string);
8338 #endif
8339 }
8340
8341 outrel.r_info = ELF32_R_INFO (indx, r_type);
8342 }
8343 else if (ifunc != NULL)
8344 outrel.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
8345 else
8346 outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
8347 }
8348
8349 loc = sreloc->contents;
8350 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
8351 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
8352
8353 if (skip == -1)
8354 continue;
8355
8356 /* This reloc will be computed at runtime. We clear the memory
8357 so that it contains predictable value. */
8358 if (! skip
8359 && ((input_section->flags & SEC_ALLOC) != 0
8360 || ELF32_R_TYPE (outrel.r_info) != R_PPC_RELATIVE))
8361 {
8362 relocation = howto->pc_relative ? outrel.r_offset : 0;
8363 addend = 0;
8364 break;
8365 }
8366 }
8367 break;
8368
8369 case R_PPC_RELAX_PLT:
8370 case R_PPC_RELAX_PLTREL24:
8371 if (h != NULL)
8372 {
8373 struct plt_entry *ent;
8374 bfd_vma got2_addend = 0;
8375
8376 if (r_type == R_PPC_RELAX_PLTREL24)
8377 {
8378 if (info->shared)
8379 got2_addend = addend;
8380 addend = 0;
8381 }
8382 ent = find_plt_ent (&h->plt.plist, got2, got2_addend);
8383 if (htab->plt_type == PLT_NEW)
8384 relocation = (htab->glink->output_section->vma
8385 + htab->glink->output_offset
8386 + ent->glink_offset);
8387 else
8388 relocation = (htab->plt->output_section->vma
8389 + htab->plt->output_offset
8390 + ent->plt.offset);
8391 }
8392 /* Fall thru */
8393
8394 case R_PPC_RELAX:
8395 if (info->shared)
8396 relocation -= (input_section->output_section->vma
8397 + input_section->output_offset
8398 + rel->r_offset - 4);
8399
8400 {
8401 unsigned long t0;
8402 unsigned long t1;
8403
8404 t0 = bfd_get_32 (output_bfd, contents + rel->r_offset);
8405 t1 = bfd_get_32 (output_bfd, contents + rel->r_offset + 4);
8406
8407 /* We're clearing the bits for R_PPC_ADDR16_HA
8408 and R_PPC_ADDR16_LO here. */
8409 t0 &= ~0xffff;
8410 t1 &= ~0xffff;
8411
8412 /* t0 is HA, t1 is LO */
8413 relocation += addend;
8414 t0 |= ((relocation + 0x8000) >> 16) & 0xffff;
8415 t1 |= relocation & 0xffff;
8416
8417 bfd_put_32 (output_bfd, t0, contents + rel->r_offset);
8418 bfd_put_32 (output_bfd, t1, contents + rel->r_offset + 4);
8419
8420 /* Rewrite the reloc and convert one of the trailing nop
8421 relocs to describe this relocation. */
8422 BFD_ASSERT (ELF32_R_TYPE (relend[-1].r_info) == R_PPC_NONE);
8423 /* The relocs are at the bottom 2 bytes */
8424 rel[0].r_offset += 2;
8425 memmove (rel + 1, rel, (relend - rel - 1) * sizeof (*rel));
8426 rel[0].r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_HA);
8427 rel[1].r_offset += 4;
8428 rel[1].r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_LO);
8429 rel++;
8430 }
8431 continue;
8432
8433 /* Indirect .sdata relocation. */
8434 case R_PPC_EMB_SDAI16:
8435 BFD_ASSERT (htab->sdata[0].section != NULL);
8436 if (!is_static_defined (htab->sdata[0].sym))
8437 {
8438 unresolved_reloc = TRUE;
8439 break;
8440 }
8441 relocation
8442 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[0],
8443 h, relocation, rel);
8444 addend = 0;
8445 break;
8446
8447 /* Indirect .sdata2 relocation. */
8448 case R_PPC_EMB_SDA2I16:
8449 BFD_ASSERT (htab->sdata[1].section != NULL);
8450 if (!is_static_defined (htab->sdata[1].sym))
8451 {
8452 unresolved_reloc = TRUE;
8453 break;
8454 }
8455 relocation
8456 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[1],
8457 h, relocation, rel);
8458 addend = 0;
8459 break;
8460
8461 /* Handle the TOC16 reloc. We want to use the offset within the .got
8462 section, not the actual VMA. This is appropriate when generating
8463 an embedded ELF object, for which the .got section acts like the
8464 AIX .toc section. */
8465 case R_PPC_TOC16: /* phony GOT16 relocations */
8466 if (sec == NULL || sec->output_section == NULL)
8467 {
8468 unresolved_reloc = TRUE;
8469 break;
8470 }
8471 BFD_ASSERT (strcmp (bfd_get_section_name (sec->owner, sec),
8472 ".got") == 0
8473 || strcmp (bfd_get_section_name (sec->owner, sec),
8474 ".cgot") == 0);
8475
8476 addend -= sec->output_section->vma + sec->output_offset + 0x8000;
8477 break;
8478
8479 case R_PPC_PLTREL24:
8480 if (h == NULL || ifunc != NULL)
8481 break;
8482 /* Relocation is to the entry for this symbol in the
8483 procedure linkage table. */
8484 {
8485 struct plt_entry *ent = find_plt_ent (&h->plt.plist, got2,
8486 info->shared ? addend : 0);
8487 addend = 0;
8488 if (ent == NULL
8489 || htab->plt == NULL)
8490 {
8491 /* We didn't make a PLT entry for this symbol. This
8492 happens when statically linking PIC code, or when
8493 using -Bsymbolic. */
8494 break;
8495 }
8496
8497 unresolved_reloc = FALSE;
8498 if (htab->plt_type == PLT_NEW)
8499 relocation = (htab->glink->output_section->vma
8500 + htab->glink->output_offset
8501 + ent->glink_offset);
8502 else
8503 relocation = (htab->plt->output_section->vma
8504 + htab->plt->output_offset
8505 + ent->plt.offset);
8506 }
8507 break;
8508
8509 /* Relocate against _SDA_BASE_. */
8510 case R_PPC_SDAREL16:
8511 {
8512 const char *name;
8513 struct elf_link_hash_entry *sda = htab->sdata[0].sym;
8514
8515 if (sec == NULL
8516 || sec->output_section == NULL
8517 || !is_static_defined (sda))
8518 {
8519 unresolved_reloc = TRUE;
8520 break;
8521 }
8522 addend -= SYM_VAL (sda);
8523
8524 name = bfd_get_section_name (output_bfd, sec->output_section);
8525 if (! ((CONST_STRNEQ (name, ".sdata")
8526 && (name[6] == 0 || name[6] == '.'))
8527 || (CONST_STRNEQ (name, ".sbss")
8528 && (name[5] == 0 || name[5] == '.'))))
8529 {
8530 info->callbacks->einfo
8531 (_("%P: %B: the target (%s) of a %s relocation is "
8532 "in the wrong output section (%s)\n"),
8533 input_bfd,
8534 sym_name,
8535 howto->name,
8536 name);
8537 }
8538 }
8539 break;
8540
8541 /* Relocate against _SDA2_BASE_. */
8542 case R_PPC_EMB_SDA2REL:
8543 {
8544 const char *name;
8545 struct elf_link_hash_entry *sda = htab->sdata[1].sym;
8546
8547 if (sec == NULL
8548 || sec->output_section == NULL
8549 || !is_static_defined (sda))
8550 {
8551 unresolved_reloc = TRUE;
8552 break;
8553 }
8554 addend -= SYM_VAL (sda);
8555
8556 name = bfd_get_section_name (output_bfd, sec->output_section);
8557 if (! (CONST_STRNEQ (name, ".sdata2")
8558 || CONST_STRNEQ (name, ".sbss2")))
8559 {
8560 info->callbacks->einfo
8561 (_("%P: %B: the target (%s) of a %s relocation is "
8562 "in the wrong output section (%s)\n"),
8563 input_bfd,
8564 sym_name,
8565 howto->name,
8566 name);
8567 }
8568 }
8569 break;
8570
8571 case R_PPC_VLE_LO16A:
8572 relocation = (relocation + addend) & 0xffff;
8573 ppc_elf_vle_split16 (output_bfd, contents, rel->r_offset,
8574 relocation, split16a_type);
8575 continue;
8576
8577 case R_PPC_VLE_LO16D:
8578 relocation = (relocation + addend) & 0xffff;
8579 ppc_elf_vle_split16 (output_bfd, contents, rel->r_offset,
8580 relocation, split16d_type);
8581 continue;
8582
8583 case R_PPC_VLE_HI16A:
8584 relocation = ((relocation + addend) >> 16) & 0xffff;
8585 ppc_elf_vle_split16 (output_bfd, contents, rel->r_offset,
8586 relocation, split16a_type);
8587 continue;
8588
8589 case R_PPC_VLE_HI16D:
8590 relocation = ((relocation + addend) >> 16) & 0xffff;
8591 ppc_elf_vle_split16 (output_bfd, contents, rel->r_offset,
8592 relocation, split16d_type);
8593 continue;
8594
8595 case R_PPC_VLE_HA16A:
8596 {
8597 bfd_vma value = relocation + addend;
8598 value = (((value >> 16) + ((value & 0x8000) ? 1 : 0)) & 0xffff);
8599 ppc_elf_vle_split16 (output_bfd, contents, rel->r_offset,
8600 value, split16a_type);
8601 }
8602 continue;
8603
8604 case R_PPC_VLE_HA16D:
8605 {
8606 bfd_vma value = relocation + addend;
8607 value = (((value >> 16) + ((value & 0x8000) ? 1 : 0)) & 0xffff);
8608 ppc_elf_vle_split16 (output_bfd, contents, rel->r_offset,
8609 value, split16d_type);
8610 }
8611 continue;
8612
8613 /* Relocate against either _SDA_BASE_, _SDA2_BASE_, or 0. */
8614 case R_PPC_EMB_SDA21:
8615 case R_PPC_VLE_SDA21:
8616 case R_PPC_EMB_RELSDA:
8617 case R_PPC_VLE_SDA21_LO:
8618 {
8619 const char *name;
8620 int reg;
8621 struct elf_link_hash_entry *sda = NULL;
8622
8623 if (sec == NULL || sec->output_section == NULL)
8624 {
8625 unresolved_reloc = TRUE;
8626 break;
8627 }
8628
8629 name = bfd_get_section_name (output_bfd, sec->output_section);
8630 if (((CONST_STRNEQ (name, ".sdata")
8631 && (name[6] == 0 || name[6] == '.'))
8632 || (CONST_STRNEQ (name, ".sbss")
8633 && (name[5] == 0 || name[5] == '.'))))
8634 {
8635 reg = 13;
8636 sda = htab->sdata[0].sym;
8637 }
8638 else if (CONST_STRNEQ (name, ".sdata2")
8639 || CONST_STRNEQ (name, ".sbss2"))
8640 {
8641 reg = 2;
8642 sda = htab->sdata[1].sym;
8643 }
8644 else if (strcmp (name, ".PPC.EMB.sdata0") == 0
8645 || strcmp (name, ".PPC.EMB.sbss0") == 0)
8646 {
8647 reg = 0;
8648 }
8649 else
8650 {
8651 info->callbacks->einfo
8652 (_("%P: %B: the target (%s) of a %s relocation is "
8653 "in the wrong output section (%s)\n"),
8654 input_bfd,
8655 sym_name,
8656 howto->name,
8657 name);
8658
8659 bfd_set_error (bfd_error_bad_value);
8660 ret = FALSE;
8661 continue;
8662 }
8663
8664 if (sda != NULL)
8665 {
8666 if (!is_static_defined (sda))
8667 {
8668 unresolved_reloc = TRUE;
8669 break;
8670 }
8671 addend -= SYM_VAL (sda);
8672 }
8673
8674 if (reg == 0
8675 && (r_type == R_PPC_VLE_SDA21
8676 || r_type == R_PPC_VLE_SDA21_LO))
8677 {
8678 /* Use the split20 format. */
8679 bfd_vma insn, bits12to15, bits21to31;
8680 bfd_vma value = (relocation + rel->r_offset) & 0xffff;
8681 /* Propagate sign bit, if necessary. */
8682 insn = (value & 0x8000) ? 0x70107800 : 0x70000000;
8683 bits12to15 = value & 0x700;
8684 bits21to31 = value & 0x7ff;
8685 insn |= bits12to15;
8686 insn |= bits21to31;
8687 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
8688 continue;
8689 }
8690 else if (r_type == R_PPC_EMB_SDA21
8691 || r_type == R_PPC_VLE_SDA21
8692 || r_type == R_PPC_VLE_SDA21_LO)
8693 {
8694 bfd_vma insn; /* Fill in register field. */
8695
8696 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
8697 insn = (insn & ~RA_REGISTER_MASK) | (reg << RA_REGISTER_SHIFT);
8698 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
8699 }
8700 }
8701 break;
8702
8703 case R_PPC_VLE_SDAREL_LO16A:
8704 case R_PPC_VLE_SDAREL_LO16D:
8705 case R_PPC_VLE_SDAREL_HI16A:
8706 case R_PPC_VLE_SDAREL_HI16D:
8707 case R_PPC_VLE_SDAREL_HA16A:
8708 case R_PPC_VLE_SDAREL_HA16D:
8709 {
8710 bfd_vma value;
8711 const char *name;
8712 //int reg;
8713 struct elf_link_hash_entry *sda = NULL;
8714
8715 if (sec == NULL || sec->output_section == NULL)
8716 {
8717 unresolved_reloc = TRUE;
8718 break;
8719 }
8720
8721 name = bfd_get_section_name (output_bfd, sec->output_section);
8722 if (((CONST_STRNEQ (name, ".sdata")
8723 && (name[6] == 0 || name[6] == '.'))
8724 || (CONST_STRNEQ (name, ".sbss")
8725 && (name[5] == 0 || name[5] == '.'))))
8726 {
8727 //reg = 13;
8728 sda = htab->sdata[0].sym;
8729 }
8730 else if (CONST_STRNEQ (name, ".sdata2")
8731 || CONST_STRNEQ (name, ".sbss2"))
8732 {
8733 //reg = 2;
8734 sda = htab->sdata[1].sym;
8735 }
8736 else
8737 {
8738 (*_bfd_error_handler)
8739 (_("%B: the target (%s) of a %s relocation is "
8740 "in the wrong output section (%s)"),
8741 input_bfd,
8742 sym_name,
8743 howto->name,
8744 name);
8745
8746 bfd_set_error (bfd_error_bad_value);
8747 ret = FALSE;
8748 continue;
8749 }
8750
8751 if (sda != NULL)
8752 {
8753 if (!is_static_defined (sda))
8754 {
8755 unresolved_reloc = TRUE;
8756 break;
8757 }
8758 }
8759
8760 value = sda->root.u.def.section->output_section->vma
8761 + sda->root.u.def.section->output_offset;
8762
8763 if (r_type == R_PPC_VLE_SDAREL_LO16A)
8764 {
8765 value = (value + addend) & 0xffff;
8766 ppc_elf_vle_split16 (output_bfd, contents, rel->r_offset,
8767 value, split16a_type);
8768 }
8769 else if (r_type == R_PPC_VLE_SDAREL_LO16D)
8770 {
8771 value = (value + addend) & 0xffff;
8772 ppc_elf_vle_split16 (output_bfd, contents, rel->r_offset,
8773 value, split16d_type);
8774 }
8775 else if (r_type == R_PPC_VLE_SDAREL_HI16A)
8776 {
8777 value = ((value + addend) >> 16) & 0xffff;
8778 ppc_elf_vle_split16 (output_bfd, contents, rel->r_offset,
8779 value, split16a_type);
8780 }
8781 else if (r_type == R_PPC_VLE_SDAREL_HI16D)
8782 {
8783 value = ((value + addend) >> 16) & 0xffff;
8784 ppc_elf_vle_split16 (output_bfd, contents, rel->r_offset,
8785 value, split16d_type);
8786 }
8787 else if (r_type == R_PPC_VLE_SDAREL_HA16A)
8788 {
8789 value += addend;
8790 value = (((value >> 16) + ((value & 0x8000) ? 1 : 0)) & 0xffff);
8791 ppc_elf_vle_split16 (output_bfd, contents, rel->r_offset,
8792 value, split16a_type);
8793 }
8794 else if (r_type == R_PPC_VLE_SDAREL_HA16D)
8795 {
8796 value += addend;
8797 value = (((value >> 16) + ((value & 0x8000) ? 1 : 0)) & 0xffff);
8798 ppc_elf_vle_split16 (output_bfd, contents, rel->r_offset,
8799 value, split16d_type);
8800 }
8801 }
8802 continue;
8803
8804 /* Relocate against the beginning of the section. */
8805 case R_PPC_SECTOFF:
8806 case R_PPC_SECTOFF_LO:
8807 case R_PPC_SECTOFF_HI:
8808 case R_PPC_SECTOFF_HA:
8809 if (sec == NULL || sec->output_section == NULL)
8810 {
8811 unresolved_reloc = TRUE;
8812 break;
8813 }
8814 addend -= sec->output_section->vma;
8815 break;
8816
8817 /* Negative relocations. */
8818 case R_PPC_EMB_NADDR32:
8819 case R_PPC_EMB_NADDR16:
8820 case R_PPC_EMB_NADDR16_LO:
8821 case R_PPC_EMB_NADDR16_HI:
8822 case R_PPC_EMB_NADDR16_HA:
8823 addend -= 2 * relocation;
8824 break;
8825
8826 case R_PPC_COPY:
8827 case R_PPC_GLOB_DAT:
8828 case R_PPC_JMP_SLOT:
8829 case R_PPC_RELATIVE:
8830 case R_PPC_IRELATIVE:
8831 case R_PPC_PLT32:
8832 case R_PPC_PLTREL32:
8833 case R_PPC_PLT16_LO:
8834 case R_PPC_PLT16_HI:
8835 case R_PPC_PLT16_HA:
8836 case R_PPC_ADDR30:
8837 case R_PPC_EMB_RELSEC16:
8838 case R_PPC_EMB_RELST_LO:
8839 case R_PPC_EMB_RELST_HI:
8840 case R_PPC_EMB_RELST_HA:
8841 case R_PPC_EMB_BIT_FLD:
8842 info->callbacks->einfo
8843 (_("%P: %B: relocation %s is not yet supported for symbol %s\n"),
8844 input_bfd,
8845 howto->name,
8846 sym_name);
8847
8848 bfd_set_error (bfd_error_invalid_operation);
8849 ret = FALSE;
8850 continue;
8851 }
8852
8853 /* Do any further special processing. */
8854 switch (r_type)
8855 {
8856 default:
8857 break;
8858
8859 case R_PPC_ADDR16_HA:
8860 case R_PPC_REL16_HA:
8861 case R_PPC_SECTOFF_HA:
8862 case R_PPC_TPREL16_HA:
8863 case R_PPC_DTPREL16_HA:
8864 case R_PPC_EMB_NADDR16_HA:
8865 case R_PPC_EMB_RELST_HA:
8866 /* It's just possible that this symbol is a weak symbol
8867 that's not actually defined anywhere. In that case,
8868 'sec' would be NULL, and we should leave the symbol
8869 alone (it will be set to zero elsewhere in the link). */
8870 if (sec == NULL)
8871 break;
8872 /* Fall thru */
8873
8874 case R_PPC_PLT16_HA:
8875 case R_PPC_GOT16_HA:
8876 case R_PPC_GOT_TLSGD16_HA:
8877 case R_PPC_GOT_TLSLD16_HA:
8878 case R_PPC_GOT_TPREL16_HA:
8879 case R_PPC_GOT_DTPREL16_HA:
8880 /* Add 0x10000 if sign bit in 0:15 is set.
8881 Bits 0:15 are not used. */
8882 addend += 0x8000;
8883 break;
8884
8885 case R_PPC_ADDR16:
8886 case R_PPC_ADDR16_LO:
8887 case R_PPC_GOT16:
8888 case R_PPC_GOT16_LO:
8889 case R_PPC_SDAREL16:
8890 case R_PPC_SECTOFF:
8891 case R_PPC_SECTOFF_LO:
8892 case R_PPC_DTPREL16:
8893 case R_PPC_DTPREL16_LO:
8894 case R_PPC_TPREL16:
8895 case R_PPC_TPREL16_LO:
8896 case R_PPC_GOT_TLSGD16:
8897 case R_PPC_GOT_TLSGD16_LO:
8898 case R_PPC_GOT_TLSLD16:
8899 case R_PPC_GOT_TLSLD16_LO:
8900 case R_PPC_GOT_DTPREL16:
8901 case R_PPC_GOT_DTPREL16_LO:
8902 case R_PPC_GOT_TPREL16:
8903 case R_PPC_GOT_TPREL16_LO:
8904 {
8905 /* The 32-bit ABI lacks proper relocations to deal with
8906 certain 64-bit instructions. Prevent damage to bits
8907 that make up part of the insn opcode. */
8908 unsigned int insn, mask, lobit;
8909
8910 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset);
8911 mask = 0;
8912 if (is_insn_ds_form (insn))
8913 mask = 3;
8914 else if (is_insn_dq_form (insn))
8915 mask = 15;
8916 else
8917 break;
8918 lobit = mask & (relocation + addend);
8919 if (lobit != 0)
8920 {
8921 addend -= lobit;
8922 info->callbacks->einfo
8923 (_("%P: %H: error: %s against `%s' not a multiple of %u\n"),
8924 input_bfd, input_section, rel->r_offset,
8925 howto->name, sym_name, mask + 1);
8926 bfd_set_error (bfd_error_bad_value);
8927 ret = FALSE;
8928 }
8929 addend += insn & mask;
8930 }
8931 break;
8932 }
8933
8934 #ifdef DEBUG
8935 fprintf (stderr, "\ttype = %s (%d), name = %s, symbol index = %ld, "
8936 "offset = %ld, addend = %ld\n",
8937 howto->name,
8938 (int) r_type,
8939 sym_name,
8940 r_symndx,
8941 (long) rel->r_offset,
8942 (long) addend);
8943 #endif
8944
8945 if (unresolved_reloc
8946 && !((input_section->flags & SEC_DEBUGGING) != 0
8947 && h->def_dynamic)
8948 && _bfd_elf_section_offset (output_bfd, info, input_section,
8949 rel->r_offset) != (bfd_vma) -1)
8950 {
8951 info->callbacks->einfo
8952 (_("%P: %H: unresolvable %s relocation against symbol `%s'\n"),
8953 input_bfd, input_section, rel->r_offset,
8954 howto->name,
8955 sym_name);
8956 ret = FALSE;
8957 }
8958
8959 r = _bfd_final_link_relocate (howto,
8960 input_bfd,
8961 input_section,
8962 contents,
8963 rel->r_offset,
8964 relocation,
8965 addend);
8966
8967 if (r != bfd_reloc_ok)
8968 {
8969 if (r == bfd_reloc_overflow)
8970 {
8971 if (warned)
8972 continue;
8973 if (h != NULL
8974 && h->root.type == bfd_link_hash_undefweak
8975 && howto->pc_relative)
8976 {
8977 /* Assume this is a call protected by other code that
8978 detect the symbol is undefined. If this is the case,
8979 we can safely ignore the overflow. If not, the
8980 program is hosed anyway, and a little warning isn't
8981 going to help. */
8982
8983 continue;
8984 }
8985
8986 if (! (*info->callbacks->reloc_overflow) (info,
8987 (h ? &h->root : NULL),
8988 sym_name,
8989 howto->name,
8990 rel->r_addend,
8991 input_bfd,
8992 input_section,
8993 rel->r_offset))
8994 return FALSE;
8995 }
8996 else
8997 {
8998 info->callbacks->einfo
8999 (_("%P: %H: %s reloc against `%s': error %d\n"),
9000 input_bfd, input_section, rel->r_offset,
9001 howto->name, sym_name, (int) r);
9002 ret = FALSE;
9003 }
9004 }
9005 }
9006
9007 #ifdef DEBUG
9008 fprintf (stderr, "\n");
9009 #endif
9010
9011 return ret;
9012 }
9013 \f
9014 /* Finish up dynamic symbol handling. We set the contents of various
9015 dynamic sections here. */
9016
9017 static bfd_boolean
9018 ppc_elf_finish_dynamic_symbol (bfd *output_bfd,
9019 struct bfd_link_info *info,
9020 struct elf_link_hash_entry *h,
9021 Elf_Internal_Sym *sym)
9022 {
9023 struct ppc_elf_link_hash_table *htab;
9024 struct plt_entry *ent;
9025 bfd_boolean doneone;
9026
9027 #ifdef DEBUG
9028 fprintf (stderr, "ppc_elf_finish_dynamic_symbol called for %s",
9029 h->root.root.string);
9030 #endif
9031
9032 htab = ppc_elf_hash_table (info);
9033 BFD_ASSERT (htab->elf.dynobj != NULL);
9034
9035 doneone = FALSE;
9036 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
9037 if (ent->plt.offset != (bfd_vma) -1)
9038 {
9039 if (!doneone)
9040 {
9041 Elf_Internal_Rela rela;
9042 bfd_byte *loc;
9043 bfd_vma reloc_index;
9044
9045 if (htab->plt_type == PLT_NEW
9046 || !htab->elf.dynamic_sections_created
9047 || h->dynindx == -1)
9048 reloc_index = ent->plt.offset / 4;
9049 else
9050 {
9051 reloc_index = ((ent->plt.offset - htab->plt_initial_entry_size)
9052 / htab->plt_slot_size);
9053 if (reloc_index > PLT_NUM_SINGLE_ENTRIES
9054 && htab->plt_type == PLT_OLD)
9055 reloc_index -= (reloc_index - PLT_NUM_SINGLE_ENTRIES) / 2;
9056 }
9057
9058 /* This symbol has an entry in the procedure linkage table.
9059 Set it up. */
9060 if (htab->plt_type == PLT_VXWORKS
9061 && htab->elf.dynamic_sections_created
9062 && h->dynindx != -1)
9063 {
9064 bfd_vma got_offset;
9065 const bfd_vma *plt_entry;
9066
9067 /* The first three entries in .got.plt are reserved. */
9068 got_offset = (reloc_index + 3) * 4;
9069
9070 /* Use the right PLT. */
9071 plt_entry = info->shared ? ppc_elf_vxworks_pic_plt_entry
9072 : ppc_elf_vxworks_plt_entry;
9073
9074 /* Fill in the .plt on VxWorks. */
9075 if (info->shared)
9076 {
9077 bfd_put_32 (output_bfd,
9078 plt_entry[0] | PPC_HA (got_offset),
9079 htab->plt->contents + ent->plt.offset + 0);
9080 bfd_put_32 (output_bfd,
9081 plt_entry[1] | PPC_LO (got_offset),
9082 htab->plt->contents + ent->plt.offset + 4);
9083 }
9084 else
9085 {
9086 bfd_vma got_loc = got_offset + SYM_VAL (htab->elf.hgot);
9087
9088 bfd_put_32 (output_bfd,
9089 plt_entry[0] | PPC_HA (got_loc),
9090 htab->plt->contents + ent->plt.offset + 0);
9091 bfd_put_32 (output_bfd,
9092 plt_entry[1] | PPC_LO (got_loc),
9093 htab->plt->contents + ent->plt.offset + 4);
9094 }
9095
9096 bfd_put_32 (output_bfd, plt_entry[2],
9097 htab->plt->contents + ent->plt.offset + 8);
9098 bfd_put_32 (output_bfd, plt_entry[3],
9099 htab->plt->contents + ent->plt.offset + 12);
9100
9101 /* This instruction is an immediate load. The value loaded is
9102 the byte offset of the R_PPC_JMP_SLOT relocation from the
9103 start of the .rela.plt section. The value is stored in the
9104 low-order 16 bits of the load instruction. */
9105 /* NOTE: It appears that this is now an index rather than a
9106 prescaled offset. */
9107 bfd_put_32 (output_bfd,
9108 plt_entry[4] | reloc_index,
9109 htab->plt->contents + ent->plt.offset + 16);
9110 /* This instruction is a PC-relative branch whose target is
9111 the start of the PLT section. The address of this branch
9112 instruction is 20 bytes beyond the start of this PLT entry.
9113 The address is encoded in bits 6-29, inclusive. The value
9114 stored is right-shifted by two bits, permitting a 26-bit
9115 offset. */
9116 bfd_put_32 (output_bfd,
9117 (plt_entry[5]
9118 | (-(ent->plt.offset + 20) & 0x03fffffc)),
9119 htab->plt->contents + ent->plt.offset + 20);
9120 bfd_put_32 (output_bfd, plt_entry[6],
9121 htab->plt->contents + ent->plt.offset + 24);
9122 bfd_put_32 (output_bfd, plt_entry[7],
9123 htab->plt->contents + ent->plt.offset + 28);
9124
9125 /* Fill in the GOT entry corresponding to this PLT slot with
9126 the address immediately after the "bctr" instruction
9127 in this PLT entry. */
9128 bfd_put_32 (output_bfd, (htab->plt->output_section->vma
9129 + htab->plt->output_offset
9130 + ent->plt.offset + 16),
9131 htab->sgotplt->contents + got_offset);
9132
9133 if (!info->shared)
9134 {
9135 /* Fill in a couple of entries in .rela.plt.unloaded. */
9136 loc = htab->srelplt2->contents
9137 + ((VXWORKS_PLTRESOLVE_RELOCS + reloc_index
9138 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS)
9139 * sizeof (Elf32_External_Rela));
9140
9141 /* Provide the @ha relocation for the first instruction. */
9142 rela.r_offset = (htab->plt->output_section->vma
9143 + htab->plt->output_offset
9144 + ent->plt.offset + 2);
9145 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
9146 R_PPC_ADDR16_HA);
9147 rela.r_addend = got_offset;
9148 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
9149 loc += sizeof (Elf32_External_Rela);
9150
9151 /* Provide the @l relocation for the second instruction. */
9152 rela.r_offset = (htab->plt->output_section->vma
9153 + htab->plt->output_offset
9154 + ent->plt.offset + 6);
9155 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
9156 R_PPC_ADDR16_LO);
9157 rela.r_addend = got_offset;
9158 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
9159 loc += sizeof (Elf32_External_Rela);
9160
9161 /* Provide a relocation for the GOT entry corresponding to this
9162 PLT slot. Point it at the middle of the .plt entry. */
9163 rela.r_offset = (htab->sgotplt->output_section->vma
9164 + htab->sgotplt->output_offset
9165 + got_offset);
9166 rela.r_info = ELF32_R_INFO (htab->elf.hplt->indx,
9167 R_PPC_ADDR32);
9168 rela.r_addend = ent->plt.offset + 16;
9169 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
9170 }
9171
9172 /* VxWorks uses non-standard semantics for R_PPC_JMP_SLOT.
9173 In particular, the offset for the relocation is not the
9174 address of the PLT entry for this function, as specified
9175 by the ABI. Instead, the offset is set to the address of
9176 the GOT slot for this function. See EABI 4.4.4.1. */
9177 rela.r_offset = (htab->sgotplt->output_section->vma
9178 + htab->sgotplt->output_offset
9179 + got_offset);
9180
9181 }
9182 else
9183 {
9184 asection *splt = htab->plt;
9185 if (!htab->elf.dynamic_sections_created
9186 || h->dynindx == -1)
9187 splt = htab->iplt;
9188
9189 rela.r_offset = (splt->output_section->vma
9190 + splt->output_offset
9191 + ent->plt.offset);
9192 if (htab->plt_type == PLT_OLD
9193 || !htab->elf.dynamic_sections_created
9194 || h->dynindx == -1)
9195 {
9196 /* We don't need to fill in the .plt. The ppc dynamic
9197 linker will fill it in. */
9198 }
9199 else
9200 {
9201 bfd_vma val = (htab->glink_pltresolve + ent->plt.offset
9202 + htab->glink->output_section->vma
9203 + htab->glink->output_offset);
9204 bfd_put_32 (output_bfd, val,
9205 splt->contents + ent->plt.offset);
9206 }
9207 }
9208
9209 /* Fill in the entry in the .rela.plt section. */
9210 rela.r_addend = 0;
9211 if (!htab->elf.dynamic_sections_created
9212 || h->dynindx == -1)
9213 {
9214 BFD_ASSERT (h->type == STT_GNU_IFUNC
9215 && h->def_regular
9216 && (h->root.type == bfd_link_hash_defined
9217 || h->root.type == bfd_link_hash_defweak));
9218 rela.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
9219 rela.r_addend = SYM_VAL (h);
9220 }
9221 else
9222 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_JMP_SLOT);
9223
9224 if (!htab->elf.dynamic_sections_created
9225 || h->dynindx == -1)
9226 loc = (htab->reliplt->contents
9227 + (htab->reliplt->reloc_count++
9228 * sizeof (Elf32_External_Rela)));
9229 else
9230 loc = (htab->relplt->contents
9231 + reloc_index * sizeof (Elf32_External_Rela));
9232 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
9233
9234 if (!h->def_regular)
9235 {
9236 /* Mark the symbol as undefined, rather than as
9237 defined in the .plt section. Leave the value if
9238 there were any relocations where pointer equality
9239 matters (this is a clue for the dynamic linker, to
9240 make function pointer comparisons work between an
9241 application and shared library), otherwise set it
9242 to zero. */
9243 sym->st_shndx = SHN_UNDEF;
9244 if (!h->pointer_equality_needed)
9245 sym->st_value = 0;
9246 else if (!h->ref_regular_nonweak)
9247 {
9248 /* This breaks function pointer comparisons, but
9249 that is better than breaking tests for a NULL
9250 function pointer. */
9251 sym->st_value = 0;
9252 }
9253 }
9254 else if (h->type == STT_GNU_IFUNC
9255 && !info->shared)
9256 {
9257 /* Set the value of ifunc symbols in a non-pie
9258 executable to the glink entry. This is to avoid
9259 text relocations. We can't do this for ifunc in
9260 allocate_dynrelocs, as we do for normal dynamic
9261 function symbols with plt entries, because we need
9262 to keep the original value around for the ifunc
9263 relocation. */
9264 sym->st_shndx = (_bfd_elf_section_from_bfd_section
9265 (output_bfd, htab->glink->output_section));
9266 sym->st_value = (ent->glink_offset
9267 + htab->glink->output_offset
9268 + htab->glink->output_section->vma);
9269 }
9270 doneone = TRUE;
9271 }
9272
9273 if (htab->plt_type == PLT_NEW
9274 || !htab->elf.dynamic_sections_created
9275 || h->dynindx == -1)
9276 {
9277 unsigned char *p;
9278 asection *splt = htab->plt;
9279 if (!htab->elf.dynamic_sections_created
9280 || h->dynindx == -1)
9281 splt = htab->iplt;
9282
9283 p = (unsigned char *) htab->glink->contents + ent->glink_offset;
9284
9285 if (h == htab->tls_get_addr && !htab->no_tls_get_addr_opt)
9286 {
9287 bfd_put_32 (output_bfd, LWZ_11_3, p);
9288 p += 4;
9289 bfd_put_32 (output_bfd, LWZ_12_3 + 4, p);
9290 p += 4;
9291 bfd_put_32 (output_bfd, MR_0_3, p);
9292 p += 4;
9293 bfd_put_32 (output_bfd, CMPWI_11_0, p);
9294 p += 4;
9295 bfd_put_32 (output_bfd, ADD_3_12_2, p);
9296 p += 4;
9297 bfd_put_32 (output_bfd, BEQLR, p);
9298 p += 4;
9299 bfd_put_32 (output_bfd, MR_3_0, p);
9300 p += 4;
9301 bfd_put_32 (output_bfd, NOP, p);
9302 p += 4;
9303 }
9304
9305 write_glink_stub (ent, splt, p, info);
9306
9307 if (!info->shared)
9308 /* We only need one non-PIC glink stub. */
9309 break;
9310 }
9311 else
9312 break;
9313 }
9314
9315 if (h->needs_copy)
9316 {
9317 asection *s;
9318 Elf_Internal_Rela rela;
9319 bfd_byte *loc;
9320
9321 /* This symbols needs a copy reloc. Set it up. */
9322
9323 #ifdef DEBUG
9324 fprintf (stderr, ", copy");
9325 #endif
9326
9327 BFD_ASSERT (h->dynindx != -1);
9328
9329 if (ppc_elf_hash_entry (h)->has_sda_refs)
9330 s = htab->relsbss;
9331 else
9332 s = htab->relbss;
9333 BFD_ASSERT (s != NULL);
9334
9335 rela.r_offset = SYM_VAL (h);
9336 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_COPY);
9337 rela.r_addend = 0;
9338 loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
9339 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
9340 }
9341
9342 #ifdef DEBUG
9343 fprintf (stderr, "\n");
9344 #endif
9345
9346 return TRUE;
9347 }
9348 \f
9349 static enum elf_reloc_type_class
9350 ppc_elf_reloc_type_class (const Elf_Internal_Rela *rela)
9351 {
9352 switch (ELF32_R_TYPE (rela->r_info))
9353 {
9354 case R_PPC_RELATIVE:
9355 return reloc_class_relative;
9356 case R_PPC_REL24:
9357 case R_PPC_ADDR24:
9358 case R_PPC_JMP_SLOT:
9359 return reloc_class_plt;
9360 case R_PPC_COPY:
9361 return reloc_class_copy;
9362 default:
9363 return reloc_class_normal;
9364 }
9365 }
9366 \f
9367 /* Finish up the dynamic sections. */
9368
9369 static bfd_boolean
9370 ppc_elf_finish_dynamic_sections (bfd *output_bfd,
9371 struct bfd_link_info *info)
9372 {
9373 asection *sdyn;
9374 asection *splt;
9375 struct ppc_elf_link_hash_table *htab;
9376 bfd_vma got;
9377 bfd *dynobj;
9378 bfd_boolean ret = TRUE;
9379
9380 #ifdef DEBUG
9381 fprintf (stderr, "ppc_elf_finish_dynamic_sections called\n");
9382 #endif
9383
9384 htab = ppc_elf_hash_table (info);
9385 dynobj = elf_hash_table (info)->dynobj;
9386 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
9387 if (htab->is_vxworks)
9388 splt = bfd_get_linker_section (dynobj, ".plt");
9389 else
9390 splt = NULL;
9391
9392 got = 0;
9393 if (htab->elf.hgot != NULL)
9394 got = SYM_VAL (htab->elf.hgot);
9395
9396 if (htab->elf.dynamic_sections_created)
9397 {
9398 Elf32_External_Dyn *dyncon, *dynconend;
9399
9400 BFD_ASSERT (htab->plt != NULL && sdyn != NULL);
9401
9402 dyncon = (Elf32_External_Dyn *) sdyn->contents;
9403 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
9404 for (; dyncon < dynconend; dyncon++)
9405 {
9406 Elf_Internal_Dyn dyn;
9407 asection *s;
9408
9409 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
9410
9411 switch (dyn.d_tag)
9412 {
9413 case DT_PLTGOT:
9414 if (htab->is_vxworks)
9415 s = htab->sgotplt;
9416 else
9417 s = htab->plt;
9418 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
9419 break;
9420
9421 case DT_PLTRELSZ:
9422 dyn.d_un.d_val = htab->relplt->size;
9423 break;
9424
9425 case DT_JMPREL:
9426 s = htab->relplt;
9427 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
9428 break;
9429
9430 case DT_PPC_GOT:
9431 dyn.d_un.d_ptr = got;
9432 break;
9433
9434 case DT_RELASZ:
9435 if (htab->is_vxworks)
9436 {
9437 if (htab->relplt)
9438 dyn.d_un.d_ptr -= htab->relplt->size;
9439 break;
9440 }
9441 continue;
9442
9443 default:
9444 if (htab->is_vxworks
9445 && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn))
9446 break;
9447 continue;
9448 }
9449
9450 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
9451 }
9452 }
9453
9454 if (htab->got != NULL)
9455 {
9456 if (htab->elf.hgot->root.u.def.section == htab->got
9457 || htab->elf.hgot->root.u.def.section == htab->sgotplt)
9458 {
9459 unsigned char *p = htab->elf.hgot->root.u.def.section->contents;
9460
9461 p += htab->elf.hgot->root.u.def.value;
9462 if (htab->plt_type == PLT_OLD)
9463 {
9464 /* Add a blrl instruction at _GLOBAL_OFFSET_TABLE_-4
9465 so that a function can easily find the address of
9466 _GLOBAL_OFFSET_TABLE_. */
9467 BFD_ASSERT (htab->elf.hgot->root.u.def.value - 4
9468 < htab->elf.hgot->root.u.def.section->size);
9469 bfd_put_32 (output_bfd, 0x4e800021, p - 4);
9470 }
9471
9472 if (sdyn != NULL)
9473 {
9474 bfd_vma val = sdyn->output_section->vma + sdyn->output_offset;
9475 BFD_ASSERT (htab->elf.hgot->root.u.def.value
9476 < htab->elf.hgot->root.u.def.section->size);
9477 bfd_put_32 (output_bfd, val, p);
9478 }
9479 }
9480 else
9481 {
9482 info->callbacks->einfo (_("%P: %s not defined in linker created %s\n"),
9483 htab->elf.hgot->root.root.string,
9484 (htab->sgotplt != NULL
9485 ? htab->sgotplt->name : htab->got->name));
9486 bfd_set_error (bfd_error_bad_value);
9487 ret = FALSE;
9488 }
9489
9490 elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 4;
9491 }
9492
9493 /* Fill in the first entry in the VxWorks procedure linkage table. */
9494 if (splt && splt->size > 0)
9495 {
9496 /* Use the right PLT. */
9497 const bfd_vma *plt_entry = (info->shared
9498 ? ppc_elf_vxworks_pic_plt0_entry
9499 : ppc_elf_vxworks_plt0_entry);
9500
9501 if (!info->shared)
9502 {
9503 bfd_vma got_value = SYM_VAL (htab->elf.hgot);
9504
9505 bfd_put_32 (output_bfd, plt_entry[0] | PPC_HA (got_value),
9506 splt->contents + 0);
9507 bfd_put_32 (output_bfd, plt_entry[1] | PPC_LO (got_value),
9508 splt->contents + 4);
9509 }
9510 else
9511 {
9512 bfd_put_32 (output_bfd, plt_entry[0], splt->contents + 0);
9513 bfd_put_32 (output_bfd, plt_entry[1], splt->contents + 4);
9514 }
9515 bfd_put_32 (output_bfd, plt_entry[2], splt->contents + 8);
9516 bfd_put_32 (output_bfd, plt_entry[3], splt->contents + 12);
9517 bfd_put_32 (output_bfd, plt_entry[4], splt->contents + 16);
9518 bfd_put_32 (output_bfd, plt_entry[5], splt->contents + 20);
9519 bfd_put_32 (output_bfd, plt_entry[6], splt->contents + 24);
9520 bfd_put_32 (output_bfd, plt_entry[7], splt->contents + 28);
9521
9522 if (! info->shared)
9523 {
9524 Elf_Internal_Rela rela;
9525 bfd_byte *loc;
9526
9527 loc = htab->srelplt2->contents;
9528
9529 /* Output the @ha relocation for the first instruction. */
9530 rela.r_offset = (htab->plt->output_section->vma
9531 + htab->plt->output_offset
9532 + 2);
9533 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
9534 rela.r_addend = 0;
9535 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
9536 loc += sizeof (Elf32_External_Rela);
9537
9538 /* Output the @l relocation for the second instruction. */
9539 rela.r_offset = (htab->plt->output_section->vma
9540 + htab->plt->output_offset
9541 + 6);
9542 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
9543 rela.r_addend = 0;
9544 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
9545 loc += sizeof (Elf32_External_Rela);
9546
9547 /* Fix up the remaining relocations. They may have the wrong
9548 symbol index for _G_O_T_ or _P_L_T_ depending on the order
9549 in which symbols were output. */
9550 while (loc < htab->srelplt2->contents + htab->srelplt2->size)
9551 {
9552 Elf_Internal_Rela rel;
9553
9554 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
9555 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
9556 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
9557 loc += sizeof (Elf32_External_Rela);
9558
9559 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
9560 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
9561 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
9562 loc += sizeof (Elf32_External_Rela);
9563
9564 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
9565 rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_PPC_ADDR32);
9566 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
9567 loc += sizeof (Elf32_External_Rela);
9568 }
9569 }
9570 }
9571
9572 if (htab->glink != NULL
9573 && htab->glink->contents != NULL
9574 && htab->elf.dynamic_sections_created)
9575 {
9576 unsigned char *p;
9577 unsigned char *endp;
9578 bfd_vma res0;
9579 unsigned int i;
9580
9581 /*
9582 * PIC glink code is the following:
9583 *
9584 * # ith PLT code stub.
9585 * addis 11,30,(plt+(i-1)*4-got)@ha
9586 * lwz 11,(plt+(i-1)*4-got)@l(11)
9587 * mtctr 11
9588 * bctr
9589 *
9590 * # A table of branches, one for each plt entry.
9591 * # The idea is that the plt call stub loads ctr and r11 with these
9592 * # addresses, so (r11 - res_0) gives the plt index * 4.
9593 * res_0: b PLTresolve
9594 * res_1: b PLTresolve
9595 * .
9596 * # Some number of entries towards the end can be nops
9597 * res_n_m3: nop
9598 * res_n_m2: nop
9599 * res_n_m1:
9600 *
9601 * PLTresolve:
9602 * addis 11,11,(1f-res_0)@ha
9603 * mflr 0
9604 * bcl 20,31,1f
9605 * 1: addi 11,11,(1b-res_0)@l
9606 * mflr 12
9607 * mtlr 0
9608 * sub 11,11,12 # r11 = index * 4
9609 * addis 12,12,(got+4-1b)@ha
9610 * lwz 0,(got+4-1b)@l(12) # got[1] address of dl_runtime_resolve
9611 * lwz 12,(got+8-1b)@l(12) # got[2] contains the map address
9612 * mtctr 0
9613 * add 0,11,11
9614 * add 11,0,11 # r11 = index * 12 = reloc offset.
9615 * bctr
9616 */
9617 static const unsigned int pic_plt_resolve[] =
9618 {
9619 ADDIS_11_11,
9620 MFLR_0,
9621 BCL_20_31,
9622 ADDI_11_11,
9623 MFLR_12,
9624 MTLR_0,
9625 SUB_11_11_12,
9626 ADDIS_12_12,
9627 LWZ_0_12,
9628 LWZ_12_12,
9629 MTCTR_0,
9630 ADD_0_11_11,
9631 ADD_11_0_11,
9632 BCTR,
9633 NOP,
9634 NOP
9635 };
9636
9637 /*
9638 * Non-PIC glink code is a little simpler.
9639 *
9640 * # ith PLT code stub.
9641 * lis 11,(plt+(i-1)*4)@ha
9642 * lwz 11,(plt+(i-1)*4)@l(11)
9643 * mtctr 11
9644 * bctr
9645 *
9646 * The branch table is the same, then comes
9647 *
9648 * PLTresolve:
9649 * lis 12,(got+4)@ha
9650 * addis 11,11,(-res_0)@ha
9651 * lwz 0,(got+4)@l(12) # got[1] address of dl_runtime_resolve
9652 * addi 11,11,(-res_0)@l # r11 = index * 4
9653 * mtctr 0
9654 * add 0,11,11
9655 * lwz 12,(got+8)@l(12) # got[2] contains the map address
9656 * add 11,0,11 # r11 = index * 12 = reloc offset.
9657 * bctr
9658 */
9659 static const unsigned int plt_resolve[] =
9660 {
9661 LIS_12,
9662 ADDIS_11_11,
9663 LWZ_0_12,
9664 ADDI_11_11,
9665 MTCTR_0,
9666 ADD_0_11_11,
9667 LWZ_12_12,
9668 ADD_11_0_11,
9669 BCTR,
9670 NOP,
9671 NOP,
9672 NOP,
9673 NOP,
9674 NOP,
9675 NOP,
9676 NOP
9677 };
9678
9679 if (ARRAY_SIZE (pic_plt_resolve) != GLINK_PLTRESOLVE / 4)
9680 abort ();
9681 if (ARRAY_SIZE (plt_resolve) != GLINK_PLTRESOLVE / 4)
9682 abort ();
9683
9684 /* Build the branch table, one for each plt entry (less one),
9685 and perhaps some padding. */
9686 p = htab->glink->contents;
9687 p += htab->glink_pltresolve;
9688 endp = htab->glink->contents;
9689 endp += htab->glink->size - GLINK_PLTRESOLVE;
9690 while (p < endp - 8 * 4)
9691 {
9692 bfd_put_32 (output_bfd, B + endp - p, p);
9693 p += 4;
9694 }
9695 while (p < endp)
9696 {
9697 bfd_put_32 (output_bfd, NOP, p);
9698 p += 4;
9699 }
9700
9701 res0 = (htab->glink_pltresolve
9702 + htab->glink->output_section->vma
9703 + htab->glink->output_offset);
9704
9705 /* Last comes the PLTresolve stub. */
9706 if (info->shared)
9707 {
9708 bfd_vma bcl;
9709
9710 for (i = 0; i < ARRAY_SIZE (pic_plt_resolve); i++)
9711 {
9712 bfd_put_32 (output_bfd, pic_plt_resolve[i], p);
9713 p += 4;
9714 }
9715 p -= 4 * ARRAY_SIZE (pic_plt_resolve);
9716
9717 bcl = (htab->glink->size - GLINK_PLTRESOLVE + 3*4
9718 + htab->glink->output_section->vma
9719 + htab->glink->output_offset);
9720
9721 bfd_put_32 (output_bfd,
9722 ADDIS_11_11 + PPC_HA (bcl - res0), p + 0*4);
9723 bfd_put_32 (output_bfd,
9724 ADDI_11_11 + PPC_LO (bcl - res0), p + 3*4);
9725 bfd_put_32 (output_bfd,
9726 ADDIS_12_12 + PPC_HA (got + 4 - bcl), p + 7*4);
9727 if (PPC_HA (got + 4 - bcl) == PPC_HA (got + 8 - bcl))
9728 {
9729 bfd_put_32 (output_bfd,
9730 LWZ_0_12 + PPC_LO (got + 4 - bcl), p + 8*4);
9731 bfd_put_32 (output_bfd,
9732 LWZ_12_12 + PPC_LO (got + 8 - bcl), p + 9*4);
9733 }
9734 else
9735 {
9736 bfd_put_32 (output_bfd,
9737 LWZU_0_12 + PPC_LO (got + 4 - bcl), p + 8*4);
9738 bfd_put_32 (output_bfd,
9739 LWZ_12_12 + 4, p + 9*4);
9740 }
9741 }
9742 else
9743 {
9744 for (i = 0; i < ARRAY_SIZE (plt_resolve); i++)
9745 {
9746 bfd_put_32 (output_bfd, plt_resolve[i], p);
9747 p += 4;
9748 }
9749 p -= 4 * ARRAY_SIZE (plt_resolve);
9750
9751 bfd_put_32 (output_bfd,
9752 LIS_12 + PPC_HA (got + 4), p + 0*4);
9753 bfd_put_32 (output_bfd,
9754 ADDIS_11_11 + PPC_HA (-res0), p + 1*4);
9755 bfd_put_32 (output_bfd,
9756 ADDI_11_11 + PPC_LO (-res0), p + 3*4);
9757 if (PPC_HA (got + 4) == PPC_HA (got + 8))
9758 {
9759 bfd_put_32 (output_bfd,
9760 LWZ_0_12 + PPC_LO (got + 4), p + 2*4);
9761 bfd_put_32 (output_bfd,
9762 LWZ_12_12 + PPC_LO (got + 8), p + 6*4);
9763 }
9764 else
9765 {
9766 bfd_put_32 (output_bfd,
9767 LWZU_0_12 + PPC_LO (got + 4), p + 2*4);
9768 bfd_put_32 (output_bfd,
9769 LWZ_12_12 + 4, p + 6*4);
9770 }
9771 }
9772 }
9773
9774 if (htab->glink_eh_frame != NULL
9775 && htab->glink_eh_frame->contents != NULL)
9776 {
9777 unsigned char *p = htab->glink_eh_frame->contents;
9778 bfd_vma val;
9779
9780 p += sizeof (glink_eh_frame_cie);
9781 /* FDE length. */
9782 p += 4;
9783 /* CIE pointer. */
9784 p += 4;
9785 /* Offset to .glink. */
9786 val = (htab->glink->output_section->vma
9787 + htab->glink->output_offset);
9788 val -= (htab->glink_eh_frame->output_section->vma
9789 + htab->glink_eh_frame->output_offset);
9790 val -= p - htab->glink_eh_frame->contents;
9791 bfd_put_32 (htab->elf.dynobj, val, p);
9792
9793 if (htab->glink_eh_frame->sec_info_type == SEC_INFO_TYPE_EH_FRAME
9794 && !_bfd_elf_write_section_eh_frame (output_bfd, info,
9795 htab->glink_eh_frame,
9796 htab->glink_eh_frame->contents))
9797 return FALSE;
9798 }
9799
9800 return ret;
9801 }
9802 \f
9803 #define TARGET_LITTLE_SYM bfd_elf32_powerpcle_vec
9804 #define TARGET_LITTLE_NAME "elf32-powerpcle"
9805 #define TARGET_BIG_SYM bfd_elf32_powerpc_vec
9806 #define TARGET_BIG_NAME "elf32-powerpc"
9807 #define ELF_ARCH bfd_arch_powerpc
9808 #define ELF_TARGET_ID PPC32_ELF_DATA
9809 #define ELF_MACHINE_CODE EM_PPC
9810 #ifdef __QNXTARGET__
9811 #define ELF_MAXPAGESIZE 0x1000
9812 #else
9813 #define ELF_MAXPAGESIZE 0x10000
9814 #endif
9815 #define ELF_MINPAGESIZE 0x1000
9816 #define ELF_COMMONPAGESIZE 0x1000
9817 #define elf_info_to_howto ppc_elf_info_to_howto
9818
9819 #ifdef EM_CYGNUS_POWERPC
9820 #define ELF_MACHINE_ALT1 EM_CYGNUS_POWERPC
9821 #endif
9822
9823 #ifdef EM_PPC_OLD
9824 #define ELF_MACHINE_ALT2 EM_PPC_OLD
9825 #endif
9826
9827 #define elf_backend_plt_not_loaded 1
9828 #define elf_backend_can_gc_sections 1
9829 #define elf_backend_can_refcount 1
9830 #define elf_backend_rela_normal 1
9831
9832 #define bfd_elf32_mkobject ppc_elf_mkobject
9833 #define bfd_elf32_bfd_merge_private_bfd_data ppc_elf_merge_private_bfd_data
9834 #define bfd_elf32_bfd_relax_section ppc_elf_relax_section
9835 #define bfd_elf32_bfd_reloc_type_lookup ppc_elf_reloc_type_lookup
9836 #define bfd_elf32_bfd_reloc_name_lookup ppc_elf_reloc_name_lookup
9837 #define bfd_elf32_bfd_set_private_flags ppc_elf_set_private_flags
9838 #define bfd_elf32_bfd_link_hash_table_create ppc_elf_link_hash_table_create
9839 #define bfd_elf32_get_synthetic_symtab ppc_elf_get_synthetic_symtab
9840
9841 #define elf_backend_object_p ppc_elf_object_p
9842 #define elf_backend_gc_mark_hook ppc_elf_gc_mark_hook
9843 #define elf_backend_gc_sweep_hook ppc_elf_gc_sweep_hook
9844 #define elf_backend_section_from_shdr ppc_elf_section_from_shdr
9845 #define elf_backend_relocate_section ppc_elf_relocate_section
9846 #define elf_backend_create_dynamic_sections ppc_elf_create_dynamic_sections
9847 #define elf_backend_check_relocs ppc_elf_check_relocs
9848 #define elf_backend_copy_indirect_symbol ppc_elf_copy_indirect_symbol
9849 #define elf_backend_adjust_dynamic_symbol ppc_elf_adjust_dynamic_symbol
9850 #define elf_backend_add_symbol_hook ppc_elf_add_symbol_hook
9851 #define elf_backend_size_dynamic_sections ppc_elf_size_dynamic_sections
9852 #define elf_backend_hash_symbol ppc_elf_hash_symbol
9853 #define elf_backend_finish_dynamic_symbol ppc_elf_finish_dynamic_symbol
9854 #define elf_backend_finish_dynamic_sections ppc_elf_finish_dynamic_sections
9855 #define elf_backend_fake_sections ppc_elf_fake_sections
9856 #define elf_backend_additional_program_headers ppc_elf_additional_program_headers
9857 #define elf_backend_modify_segment_map ppc_elf_modify_segment_map
9858 #define elf_backend_grok_prstatus ppc_elf_grok_prstatus
9859 #define elf_backend_grok_psinfo ppc_elf_grok_psinfo
9860 #define elf_backend_write_core_note ppc_elf_write_core_note
9861 #define elf_backend_reloc_type_class ppc_elf_reloc_type_class
9862 #define elf_backend_begin_write_processing ppc_elf_begin_write_processing
9863 #define elf_backend_final_write_processing ppc_elf_final_write_processing
9864 #define elf_backend_write_section ppc_elf_write_section
9865 #define elf_backend_get_sec_type_attr ppc_elf_get_sec_type_attr
9866 #define elf_backend_plt_sym_val ppc_elf_plt_sym_val
9867 #define elf_backend_action_discarded ppc_elf_action_discarded
9868 #define elf_backend_init_index_section _bfd_elf_init_1_index_section
9869 #define elf_backend_post_process_headers _bfd_elf_set_osabi
9870 #define elf_backend_lookup_section_flags_hook ppc_elf_lookup_section_flags
9871 #define elf_backend_section_processing ppc_elf_section_processing
9872
9873 #include "elf32-target.h"
9874
9875 /* FreeBSD Target */
9876
9877 #undef TARGET_LITTLE_SYM
9878 #undef TARGET_LITTLE_NAME
9879
9880 #undef TARGET_BIG_SYM
9881 #define TARGET_BIG_SYM bfd_elf32_powerpc_freebsd_vec
9882 #undef TARGET_BIG_NAME
9883 #define TARGET_BIG_NAME "elf32-powerpc-freebsd"
9884
9885 #undef ELF_OSABI
9886 #define ELF_OSABI ELFOSABI_FREEBSD
9887
9888 #undef elf32_bed
9889 #define elf32_bed elf32_powerpc_fbsd_bed
9890
9891 #include "elf32-target.h"
9892
9893 /* VxWorks Target */
9894
9895 #undef TARGET_LITTLE_SYM
9896 #undef TARGET_LITTLE_NAME
9897
9898 #undef TARGET_BIG_SYM
9899 #define TARGET_BIG_SYM bfd_elf32_powerpc_vxworks_vec
9900 #undef TARGET_BIG_NAME
9901 #define TARGET_BIG_NAME "elf32-powerpc-vxworks"
9902
9903 #undef ELF_OSABI
9904
9905 /* VxWorks uses the elf default section flags for .plt. */
9906 static const struct bfd_elf_special_section *
9907 ppc_elf_vxworks_get_sec_type_attr (bfd *abfd ATTRIBUTE_UNUSED, asection *sec)
9908 {
9909 if (sec->name == NULL)
9910 return NULL;
9911
9912 if (strcmp (sec->name, ".plt") == 0)
9913 return _bfd_elf_get_sec_type_attr (abfd, sec);
9914
9915 return ppc_elf_get_sec_type_attr (abfd, sec);
9916 }
9917
9918 /* Like ppc_elf_link_hash_table_create, but overrides
9919 appropriately for VxWorks. */
9920 static struct bfd_link_hash_table *
9921 ppc_elf_vxworks_link_hash_table_create (bfd *abfd)
9922 {
9923 struct bfd_link_hash_table *ret;
9924
9925 ret = ppc_elf_link_hash_table_create (abfd);
9926 if (ret)
9927 {
9928 struct ppc_elf_link_hash_table *htab
9929 = (struct ppc_elf_link_hash_table *)ret;
9930 htab->is_vxworks = 1;
9931 htab->plt_type = PLT_VXWORKS;
9932 htab->plt_entry_size = VXWORKS_PLT_ENTRY_SIZE;
9933 htab->plt_slot_size = VXWORKS_PLT_ENTRY_SIZE;
9934 htab->plt_initial_entry_size = VXWORKS_PLT_INITIAL_ENTRY_SIZE;
9935 }
9936 return ret;
9937 }
9938
9939 /* Tweak magic VxWorks symbols as they are loaded. */
9940 static bfd_boolean
9941 ppc_elf_vxworks_add_symbol_hook (bfd *abfd,
9942 struct bfd_link_info *info,
9943 Elf_Internal_Sym *sym,
9944 const char **namep ATTRIBUTE_UNUSED,
9945 flagword *flagsp ATTRIBUTE_UNUSED,
9946 asection **secp,
9947 bfd_vma *valp)
9948 {
9949 if (!elf_vxworks_add_symbol_hook(abfd, info, sym,namep, flagsp, secp,
9950 valp))
9951 return FALSE;
9952
9953 return ppc_elf_add_symbol_hook(abfd, info, sym,namep, flagsp, secp, valp);
9954 }
9955
9956 static void
9957 ppc_elf_vxworks_final_write_processing (bfd *abfd, bfd_boolean linker)
9958 {
9959 ppc_elf_final_write_processing(abfd, linker);
9960 elf_vxworks_final_write_processing(abfd, linker);
9961 }
9962
9963 /* On VxWorks, we emit relocations against _PROCEDURE_LINKAGE_TABLE_, so
9964 define it. */
9965 #undef elf_backend_want_plt_sym
9966 #define elf_backend_want_plt_sym 1
9967 #undef elf_backend_want_got_plt
9968 #define elf_backend_want_got_plt 1
9969 #undef elf_backend_got_symbol_offset
9970 #define elf_backend_got_symbol_offset 0
9971 #undef elf_backend_plt_not_loaded
9972 #define elf_backend_plt_not_loaded 0
9973 #undef elf_backend_plt_readonly
9974 #define elf_backend_plt_readonly 1
9975 #undef elf_backend_got_header_size
9976 #define elf_backend_got_header_size 12
9977
9978 #undef bfd_elf32_get_synthetic_symtab
9979
9980 #undef bfd_elf32_bfd_link_hash_table_create
9981 #define bfd_elf32_bfd_link_hash_table_create \
9982 ppc_elf_vxworks_link_hash_table_create
9983 #undef elf_backend_add_symbol_hook
9984 #define elf_backend_add_symbol_hook \
9985 ppc_elf_vxworks_add_symbol_hook
9986 #undef elf_backend_link_output_symbol_hook
9987 #define elf_backend_link_output_symbol_hook \
9988 elf_vxworks_link_output_symbol_hook
9989 #undef elf_backend_final_write_processing
9990 #define elf_backend_final_write_processing \
9991 ppc_elf_vxworks_final_write_processing
9992 #undef elf_backend_get_sec_type_attr
9993 #define elf_backend_get_sec_type_attr \
9994 ppc_elf_vxworks_get_sec_type_attr
9995 #undef elf_backend_emit_relocs
9996 #define elf_backend_emit_relocs \
9997 elf_vxworks_emit_relocs
9998
9999 #undef elf32_bed
10000 #define elf32_bed ppc_elf_vxworks_bed
10001 #undef elf_backend_post_process_headers
10002
10003 #include "elf32-target.h"
GDB Binutils - Deliverables
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